/* roulang page: index */
:root {
            --c7-primary: #1b1f2f;
            --c7-primary-light: #252b3d;
            --c7-accent: #d4a853;
            --c7-accent-hover: #c4963d;
            --c7-accent-light: #f5e6c8;
            --c7-blue: #3b6df0;
            --c7-blue-hover: #2b54d4;
            --c7-text: #1a1a1a;
            --c7-text-soft: #5a5f6b;
            --c7-text-light: #8890a0;
            --c7-bg: #f8f9fb;
            --c7-bg-white: #ffffff;
            --c7-bg-dark: #111620;
            --c7-bg-section: #f0f2f7;
            --c7-border: #e2e5ec;
            --c7-border-light: #eef0f4;
            --c7-radius-sm: 8px;
            --c7-radius: 12px;
            --c7-radius-lg: 16px;
            --c7-radius-xl: 20px;
            --c7-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --c7-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --c7-shadow-md: 0 8px 28px rgba(0, 0, 0, 0.10);
            --c7-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
            --c7-shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.15);
            --c7-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --c7-nav-height: 68px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: var(--c7-nav-height);
        }

        body {
            font-family: var(--c7-font);
            color: var(--c7-text);
            background-color: var(--c7-bg);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--c7-nav-height);
        }

        a {
            color: var(--c7-blue);
            text-decoration: none;
            transition: color var(--c7-transition);
        }
        a:hover {
            color: var(--c7-blue-hover);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--c7-blue);
            outline-offset: 3px;
            border-radius: 4px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--c7-blue);
            outline-offset: 2px;
        }

        .container-c7 {
            width: 100%;
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        @media (min-width: 1400px) {
            .container-c7 {
                max-width: 1320px;
            }
        }

        /* ========== NAVBAR ========== */
        .c7-navbar {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(27, 31, 47, 0.97);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            height: var(--c7-nav-height);
            transition: box-shadow var(--c7-transition), background var(--c7-transition);
        }
        .c7-navbar.scrolled {
            box-shadow: var(--c7-shadow-lg);
            background: rgba(27, 31, 47, 0.99);
        }
        .c7-nav-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--c7-nav-height);
            gap: 16px;
        }
        .c7-logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: #ffffff;
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: opacity var(--c7-transition);
        }
        .c7-logo:hover {
            color: var(--c7-accent);
            opacity: 1;
        }
        .c7-logo-icon {
            width: 36px;
            height: 36px;
            background: var(--c7-accent);
            border-radius: var(--c7-radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--c7-primary);
            flex-shrink: 0;
        }
        .c7-nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: nowrap;
        }
        .c7-nav-links li a {
            display: block;
            padding: 8px 14px;
            border-radius: 6px;
            font-size: 0.93rem;
            font-weight: 500;
            color: rgba(255, 255, 255, 0.82);
            transition: all var(--c7-transition);
            white-space: nowrap;
            position: relative;
        }
        .c7-nav-links li a:hover {
            color: #ffffff;
            background: rgba(255, 255, 255, 0.08);
        }
        .c7-nav-links li a.active {
            color: var(--c7-accent);
            background: rgba(212, 168, 83, 0.1);
            font-weight: 600;
        }
        .c7-nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--c7-accent);
            border-radius: 3px;
        }
        .c7-nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 24px;
            padding: 7px 16px;
            transition: all var(--c7-transition);
            min-width: 180px;
        }
        .c7-nav-search:focus-within {
            border-color: var(--c7-accent);
            background: rgba(255, 255, 255, 0.1);
            box-shadow: 0 0 0 3px rgba(212, 168, 83, 0.12);
        }
        .c7-nav-search input {
            border: none;
            background: transparent;
            color: #fff;
            font-size: 0.88rem;
            outline: none;
            width: 100%;
            font-family: var(--c7-font);
        }
        .c7-nav-search input::placeholder {
            color: rgba(255, 255, 255, 0.45);
        }
        .c7-nav-search .fa-search {
            color: rgba(255, 255, 255, 0.55);
            font-size: 0.85rem;
        }
        .c7-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--c7-accent);
            color: var(--c7-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 9px 20px;
            border-radius: 24px;
            border: none;
            cursor: pointer;
            white-space: nowrap;
            transition: all var(--c7-transition);
            font-family: var(--c7-font);
        }
        .c7-nav-cta:hover {
            background: var(--c7-accent-hover);
            color: var(--c7-primary);
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(212, 168, 83, 0.35);
        }
        .c7-nav-toggler {
            display: none;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 1.3rem;
            padding: 6px 12px;
            border-radius: 6px;
            cursor: pointer;
            transition: all var(--c7-transition);
        }
        .c7-nav-toggler:hover {
            background: rgba(255, 255, 255, 0.18);
        }

        @media (max-width: 1024px) {
            .c7-nav-links {
                gap: 0;
            }
            .c7-nav-links li a {
                padding: 6px 9px;
                font-size: 0.82rem;
            }
            .c7-nav-search {
                min-width: 140px;
                padding: 6px 12px;
            }
            .c7-nav-search input {
                font-size: 0.8rem;
            }
            .c7-nav-cta {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .c7-logo {
                font-size: 1.25rem;
            }
        }
        @media (max-width: 768px) {
            .c7-nav-links,
            .c7-nav-search,
            .c7-nav-cta {
                display: none;
            }
            .c7-nav-toggler {
                display: block;
            }
            .c7-nav-inner {
                gap: 10px;
            }
            .c7-mobile-menu {
                display: none;
                position: fixed;
                top: var(--c7-nav-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(17, 22, 32, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                z-index: 1049;
                flex-direction: column;
                padding: 20px;
                gap: 6px;
                overflow-y: auto;
            }
            .c7-mobile-menu.open {
                display: flex;
            }
            .c7-mobile-menu a {
                display: block;
                padding: 14px 18px;
                color: rgba(255, 255, 255, 0.85);
                font-size: 1rem;
                font-weight: 500;
                border-radius: 10px;
                transition: all var(--c7-transition);
            }
            .c7-mobile-menu a:hover,
            .c7-mobile-menu a.active {
                background: rgba(255, 255, 255, 0.08);
                color: #fff;
            }
            .c7-mobile-menu a.active {
                color: var(--c7-accent);
                font-weight: 600;
            }
            .c7-mobile-search {
                display: flex;
                align-items: center;
                gap: 8px;
                background: rgba(255, 255, 255, 0.06);
                border: 1px solid rgba(255, 255, 255, 0.15);
                border-radius: 24px;
                padding: 10px 16px;
                margin-bottom: 8px;
            }
            .c7-mobile-search input {
                border: none;
                background: transparent;
                color: #fff;
                font-size: 0.9rem;
                outline: none;
                width: 100%;
                font-family: var(--c7-font);
            }
            .c7-mobile-search input::placeholder {
                color: rgba(255, 255, 255, 0.4);
            }
            .c7-mobile-cta {
                display: block;
                text-align: center;
                background: var(--c7-accent);
                color: var(--c7-primary);
                font-weight: 600;
                font-size: 1rem;
                padding: 14px 20px;
                border-radius: 24px;
                margin-top: 8px;
                transition: all var(--c7-transition);
            }
            .c7-mobile-cta:hover {
                background: var(--c7-accent-hover);
                color: var(--c7-primary);
            }
        }

        /* ========== HERO ========== */
        .c7-hero {
            position: relative;
            background: var(--c7-primary);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .c7-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(17, 22, 32, 0.88) 0%, rgba(27, 31, 47, 0.72) 40%, rgba(17, 22, 32, 0.82) 100%);
            z-index: 1;
        }
        .c7-hero .container-c7 {
            position: relative;
            z-index: 2;
            width: 100%;
        }
        .c7-hero-content {
            max-width: 700px;
            padding: 60px 0;
        }
        .c7-hero-badge {
            display: inline-block;
            background: rgba(212, 168, 83, 0.18);
            color: var(--c7-accent);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 6px 16px;
            border-radius: 20px;
            border: 1px solid rgba(212, 168, 83, 0.3);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }
        .c7-hero h1 {
            font-size: 3.2rem;
            font-weight: 800;
            color: #ffffff;
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }
        .c7-hero h1 .accent {
            color: var(--c7-accent);
        }
        .c7-hero-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.78);
            line-height: 1.75;
            margin-bottom: 32px;
            max-width: 560px;
        }
        .c7-hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }
        .c7-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 13px 28px;
            border-radius: 28px;
            border: none;
            cursor: pointer;
            transition: all var(--c7-transition);
            font-family: var(--c7-font);
            letter-spacing: 0.3px;
            text-decoration: none;
        }
        .c7-btn-primary {
            background: var(--c7-accent);
            color: var(--c7-primary);
            box-shadow: 0 4px 18px rgba(212, 168, 83, 0.3);
        }
        .c7-btn-primary:hover {
            background: var(--c7-accent-hover);
            color: var(--c7-primary);
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(212, 168, 83, 0.4);
        }
        .c7-btn-outline {
            background: transparent;
            color: #ffffff;
            border: 2px solid rgba(255, 255, 255, 0.4);
        }
        .c7-btn-outline:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.7);
            color: #ffffff;
            transform: translateY(-2px);
        }
        .c7-btn-sm {
            padding: 9px 20px;
            font-size: 0.85rem;
            border-radius: 22px;
        }
        @media (max-width: 768px) {
            .c7-hero {
                min-height: 500px;
            }
            .c7-hero h1 {
                font-size: 2rem;
            }
            .c7-hero-desc {
                font-size: 1rem;
            }
            .c7-hero-content {
                padding: 40px 0;
            }
            .c7-btn {
                padding: 11px 22px;
                font-size: 0.88rem;
            }
        }
        @media (max-width: 520px) {
            .c7-hero {
                min-height: 440px;
            }
            .c7-hero h1 {
                font-size: 1.6rem;
            }
            .c7-hero-desc {
                font-size: 0.9rem;
            }
            .c7-hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .c7-btn {
                width: 100%;
                justify-content: center;
            }
        }

        /* ========== SECTIONS ========== */
        .c7-section {
            padding: 70px 0;
        }
        .c7-section-sm {
            padding: 50px 0;
        }
        .c7-section-title {
            text-align: center;
            margin-bottom: 48px;
        }
        .c7-section-title h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin-bottom: 10px;
            letter-spacing: -0.3px;
        }
        .c7-section-title p {
            color: var(--c7-text-soft);
            font-size: 1.05rem;
            max-width: 600px;
            margin: 0 auto;
        }
        .c7-section-title .c7-divider {
            width: 50px;
            height: 4px;
            background: var(--c7-accent);
            border-radius: 4px;
            margin: 14px auto 0;
        }
        @media (max-width: 768px) {
            .c7-section {
                padding: 48px 0;
            }
            .c7-section-title h2 {
                font-size: 1.55rem;
            }
            .c7-section-title p {
                font-size: 0.95rem;
            }
        }

        /* ========== STATS CARDS ========== */
        .c7-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .c7-stat-card {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
        }
        .c7-stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--c7-shadow-md);
        }
        .c7-stat-icon {
            font-size: 2.2rem;
            color: var(--c7-accent);
            margin-bottom: 12px;
        }
        .c7-stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--c7-primary);
            line-height: 1;
            margin-bottom: 6px;
            letter-spacing: -1px;
        }
        .c7-stat-label {
            font-size: 0.9rem;
            color: var(--c7-text-soft);
            font-weight: 500;
        }
        @media (max-width: 1024px) {
            .c7-stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .c7-stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .c7-stat-card {
                padding: 20px 16px;
            }
            .c7-stat-number {
                font-size: 1.8rem;
            }
            .c7-stat-icon {
                font-size: 1.6rem;
            }
        }

        /* ========== ADVANTAGE CARDS ========== */
        .c7-adv-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .c7-adv-card {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius-lg);
            padding: 30px 24px;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            text-align: center;
        }
        .c7-adv-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--c7-shadow-md);
            border-color: var(--c7-accent);
        }
        .c7-adv-icon-wrap {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--c7-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.5rem;
            color: var(--c7-accent);
        }
        .c7-adv-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin-bottom: 8px;
        }
        .c7-adv-card p {
            font-size: 0.9rem;
            color: var(--c7-text-soft);
            margin: 0;
            line-height: 1.6;
        }
        @media (max-width: 1024px) {
            .c7-adv-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 520px) {
            .c7-adv-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .c7-adv-card {
                padding: 24px 18px;
            }
        }

        /* ========== BRAND INTRO ========== */
        .c7-brand-intro {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius-xl);
            padding: 44px 40px;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            max-width: 900px;
            margin: 0 auto;
        }
        .c7-brand-intro h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin-bottom: 16px;
            text-align: center;
        }
        .c7-brand-intro p {
            font-size: 1rem;
            color: var(--c7-text-soft);
            line-height: 1.85;
            text-align: justify;
        }
        @media (max-width: 768px) {
            .c7-brand-intro {
                padding: 28px 20px;
                border-radius: var(--c7-radius-lg);
            }
            .c7-brand-intro p {
                font-size: 0.93rem;
                text-align: left;
            }
        }

        /* ========== BRAND STORY ========== */
        .c7-story-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
        }
        .c7-story-img {
            border-radius: var(--c7-radius-xl);
            overflow: hidden;
            box-shadow: var(--c7-shadow-lg);
        }
        .c7-story-img img {
            width: 100%;
            height: auto;
            object-fit: cover;
            aspect-ratio: 4/3;
            transition: transform 0.5s ease;
        }
        .c7-story-img:hover img {
            transform: scale(1.04);
        }
        .c7-story-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin-bottom: 14px;
        }
        .c7-story-text p {
            color: var(--c7-text-soft);
            line-height: 1.8;
            margin-bottom: 12px;
            font-size: 0.98rem;
        }
        @media (max-width: 768px) {
            .c7-story-wrap {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .c7-story-img {
                order: -1;
                border-radius: var(--c7-radius-lg);
            }
            .c7-story-img img {
                aspect-ratio: 16/9;
            }
        }

        /* ========== EVENT CARDS ========== */
        .c7-event-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .c7-event-card {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
        }
        .c7-event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--c7-shadow-lg);
        }
        .c7-event-img {
            aspect-ratio: 16/10;
            overflow: hidden;
            position: relative;
        }
        .c7-event-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .c7-event-card:hover .c7-event-img img {
            transform: scale(1.06);
        }
        .c7-event-tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--c7-accent);
            color: var(--c7-primary);
            font-weight: 700;
            font-size: 0.78rem;
            padding: 4px 12px;
            border-radius: 14px;
            z-index: 1;
        }
        .c7-event-body {
            padding: 20px 18px;
        }
        .c7-event-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .c7-event-body p {
            font-size: 0.88rem;
            color: var(--c7-text-soft);
            margin-bottom: 12px;
            line-height: 1.55;
        }
        .c7-event-meta {
            font-size: 0.8rem;
            color: var(--c7-text-light);
            display: flex;
            gap: 14px;
        }
        @media (max-width: 1024px) {
            .c7-event-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
        }
        @media (max-width: 600px) {
            .c7-event-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
        }

        /* ========== PARTNERS ========== */
        .c7-partners-row {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            gap: 28px 40px;
        }
        .c7-partner-item {
            font-size: 1rem;
            font-weight: 600;
            color: var(--c7-text-soft);
            padding: 14px 22px;
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius);
            box-shadow: var(--c7-shadow-sm);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            white-space: nowrap;
        }
        .c7-partner-item:hover {
            color: var(--c7-accent);
            border-color: var(--c7-accent);
            box-shadow: var(--c7-shadow);
            transform: translateY(-2px);
        }
        @media (max-width: 768px) {
            .c7-partners-row {
                gap: 16px 20px;
            }
            .c7-partner-item {
                font-size: 0.85rem;
                padding: 10px 16px;
            }
        }

        /* ========== TESTIMONIALS ========== */
        .c7-testi-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .c7-testi-card {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius-lg);
            padding: 28px 24px;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
        }
        .c7-testi-card:hover {
            box-shadow: var(--c7-shadow-md);
            transform: translateY(-3px);
        }
        .c7-testi-stars {
            color: var(--c7-accent);
            margin-bottom: 12px;
            font-size: 0.95rem;
        }
        .c7-testi-text {
            font-size: 0.93rem;
            color: var(--c7-text-soft);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }
        .c7-testi-author {
            font-weight: 700;
            color: var(--c7-primary);
            font-size: 0.9rem;
        }
        .c7-testi-role {
            font-size: 0.8rem;
            color: var(--c7-text-light);
        }
        @media (max-width: 1024px) {
            .c7-testi-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .c7-testi-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FAQ ========== */
        .c7-faq-wrap {
            max-width: 800px;
            margin: 0 auto;
        }
        .c7-faq-item {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius);
            margin-bottom: 12px;
            border: 1px solid var(--c7-border-light);
            overflow: hidden;
            transition: all var(--c7-transition);
        }
        .c7-faq-item:hover {
            box-shadow: var(--c7-shadow-sm);
        }
        .c7-faq-q {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--c7-primary);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-family: var(--c7-font);
            transition: color var(--c7-transition);
        }
        .c7-faq-q:hover {
            color: var(--c7-accent);
        }
        .c7-faq-q .fa-chevron-down {
            transition: transform 0.3s ease;
            font-size: 0.8rem;
            color: var(--c7-text-light);
            flex-shrink: 0;
        }
        .c7-faq-item.open .c7-faq-q .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--c7-accent);
        }
        .c7-faq-a {
            display: none;
            padding: 0 22px 20px;
            font-size: 0.93rem;
            color: var(--c7-text-soft);
            line-height: 1.75;
        }
        .c7-faq-item.open .c7-faq-a {
            display: block;
        }
        .c7-faq-item.open {
            border-color: var(--c7-accent);
            box-shadow: var(--c7-shadow);
        }

        /* ========== NEWS ========== */
        .c7-news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .c7-news-card {
            background: var(--c7-bg-white);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            display: flex;
            flex-direction: column;
        }
        .c7-news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--c7-shadow-md);
        }
        .c7-news-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }
        .c7-news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .c7-news-card:hover .c7-news-img img {
            transform: scale(1.05);
        }
        .c7-news-body {
            padding: 18px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .c7-news-date {
            font-size: 0.8rem;
            color: var(--c7-text-light);
            margin-bottom: 6px;
        }
        .c7-news-body h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .c7-news-body p {
            font-size: 0.88rem;
            color: var(--c7-text-soft);
            line-height: 1.55;
            flex: 1;
            margin-bottom: 12px;
        }
        .c7-news-body .c7-btn-sm {
            align-self: flex-start;
        }
        @media (max-width: 768px) {
            .c7-news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
        }

        /* ========== CTA ========== */
        .c7-cta-section {
            background: var(--c7-primary);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 70px 0;
            text-align: center;
        }
        .c7-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(17, 22, 32, 0.85);
            z-index: 1;
        }
        .c7-cta-section .container-c7 {
            position: relative;
            z-index: 2;
        }
        .c7-cta-section h2 {
            font-size: 2rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 12px;
        }
        .c7-cta-section p {
            color: rgba(255, 255, 255, 0.75);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        @media (max-width: 768px) {
            .c7-cta-section {
                padding: 50px 0;
            }
            .c7-cta-section h2 {
                font-size: 1.5rem;
            }
        }

        /* ========== FOOTER ========== */
        .c7-footer {
            background: var(--c7-bg-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 50px 0 30px;
        }
        .c7-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .c7-footer h4 {
            color: #ffffff;
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
        }
        .c7-footer a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 0.9rem;
            transition: color var(--c7-transition);
            display: block;
            margin-bottom: 8px;
        }
        .c7-footer a:hover {
            color: var(--c7-accent);
        }
        .c7-footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }
        .c7-footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.5);
        }
        .c7-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
        }
        @media (max-width: 520px) {
            .c7-footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
        }

        /* ========== BACK TO TOP ========== */
        .c7-back-top {
            position: fixed;
            bottom: 30px;
            right: 24px;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--c7-accent);
            color: var(--c7-primary);
            border: none;
            cursor: pointer;
            font-size: 1.1rem;
            z-index: 1040;
            box-shadow: var(--c7-shadow-md);
            transition: all var(--c7-transition);
            display: flex;
            align-items: center;
            justify-content: center;
            opacity: 0;
            visibility: hidden;
            transform: translateY(12px);
        }
        .c7-back-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .c7-back-top:hover {
            background: var(--c7-accent-hover);
            transform: translateY(-3px);
            box-shadow: var(--c7-shadow-lg);
        }

        /* Utility */
        .bg-light-c7 {
            background-color: var(--c7-bg-section);
        }
        .text-accent {
            color: var(--c7-accent);
        }

/* roulang page: category4 */
:root {
            --primary: #0a0e27;
            --primary-light: #151a3a;
            --accent: #e7b443;
            --accent-hover: #d19d2c;
            --text-dark: #1a1a2e;
            --text-light: #f0f0f0;
            --text-muted: #8892b0;
            --bg-light: #f8f9fc;
            --bg-white: #ffffff;
            --border: #e2e8f0;
            --radius: 12px;
            --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.12);
            --transition: all 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            color: var(--text-dark);
            background: var(--bg-light);
            line-height: 1.6;
            margin: 0;
            padding: 0;
        }

        a {
            text-decoration: none;
            transition: var(--transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        .container-c7 {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }

        /* 导航区域 */
        .c7-header {
            background: var(--primary);
            padding: 12px 0;
            box-shadow: 0 2px 10px rgba(0,0,0,0.3);
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .c7-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 2px;
        }

        .c7-logo:hover {
            color: var(--accent-hover);
        }

        .c7-nav-links {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 1.5rem;
            margin: 0;
            padding: 0;
        }

        .c7-nav-links a {
            color: #cbd5e1;
            font-weight: 500;
            padding: 6px 14px;
            border-radius: 6px;
            transition: var(--transition);
        }

        .c7-nav-links a:hover,
        .c7-nav-links a.active {
            color: #fff;
            background: rgba(255,255,255,0.15);
        }

        .c7-nav-links a.active {
            background: var(--accent);
            color: #000;
            font-weight: 700;
        }

        .c7-toggler {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.4);
            color: #fff;
            padding: 6px 12px;
            border-radius: 6px;
            font-size: 1.2rem;
            transition: var(--transition);
        }

        .c7-toggler:hover {
            background: rgba(255,255,255,0.2);
        }

        @media (max-width: 991.98px) {
            .c7-nav-links {
                flex-direction: column;
                gap: 0.5rem;
                padding: 1rem 0;
            }
            .c7-main-nav {
                background: var(--primary-light);
                border-radius: var(--radius);
                margin-top: 10px;
            }
        }

        /* 攻略Hero区域 */
        .hero-banner {
            background: url('assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 120px 0 80px;
            position: relative;
            color: #fff;
        }

        .hero-banner::before {
            content: '';
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: rgba(10,14,39,0.75);
        }

        .hero-banner .container-c7 {
            position: relative;
            z-index: 1;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 800;
            letter-spacing: 2px;
        }

        .hero-sub {
            font-size: 1.2rem;
            max-width: 600px;
            color: rgba(255,255,255,0.9);
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .hero-banner {
                padding: 80px 0 60px;
            }
        }

        /* 章节标题 */
        .section-title {
            font-weight: 700;
            color: var(--primary);
            position: relative;
            padding-left: 16px;
            margin-bottom: 1.5rem;
        }

        .section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 4px;
            height: 28px;
            width: 4px;
            background: var(--accent);
            border-radius: 2px;
        }

        /* 攻略卡片 */
        .guide-card {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .guide-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
        }

        .guide-img {
            height: 200px;
            width: 100%;
            object-fit: cover;
        }

        .guide-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .guide-tag {
            background: var(--accent);
            color: #000;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 2px 12px;
            border-radius: 20px;
            display: inline-block;
            width: fit-content;
            margin-bottom: 10px;
        }

        .guide-date {
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-left: 8px;
        }

        .guide-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-dark);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .guide-excerpt {
            color: #555;
            font-size: 0.95rem;
            flex: 1;
        }

        /* 按钮 */
        .btn-accent {
            background-color: var(--accent);
            border-color: var(--accent);
            color: #000;
            font-weight: 600;
            transition: var(--transition);
            border-radius: 8px;
        }

        .btn-accent:hover {
            background-color: var(--accent-hover);
            border-color: var(--accent-hover);
            color: #000;
        }

        .btn-outline-custom {
            border: 2px solid var(--primary);
            color: var(--primary);
            background: transparent;
            font-weight: 500;
            transition: var(--transition);
        }

        .btn-outline-custom:hover,
        .btn-outline-custom.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .filter-btns .btn {
            margin-right: 5px;
            margin-bottom: 5px;
        }

        /* 侧边栏 */
        .sidebar-widget {
            background: var(--bg-white);
            border-radius: var(--radius);
            box-shadow: var(--shadow-sm);
            padding: 24px;
            margin-bottom: 24px;
        }

        .sidebar-widget h4 {
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--primary);
            font-size: 1.2rem;
        }

        .tag-cloud .tag-item {
            display: inline-block;
            background: #edf2f7;
            color: var(--text-dark);
            padding: 4px 14px;
            border-radius: 20px;
            margin: 4px;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .tag-item:hover {
            background: var(--accent);
            color: #000;
        }

        .sidebar-list li {
            border-bottom: 1px solid var(--border);
            padding: 8px 0;
        }

        .sidebar-list a {
            color: var(--text-dark);
            font-weight: 500;
        }

        .sidebar-list a:hover {
            color: var(--accent);
        }

        /* FAQ区域 */
        .faq-section {
            background: var(--bg-white);
        }

        .accordion-button:not(.collapsed) {
            background-color: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent);
        }

        .accordion-button {
            font-weight: 600;
            background: #f1f5f9;
        }

        .accordion-body {
            color: var(--text-dark);
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, #1e2a5a 100%);
            color: #fff;
        }

        /* 页脚 */
        .c7-footer {
            background: var(--primary);
            color: #cbd5e1;
            padding: 50px 0 20px;
        }

        .c7-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2rem;
        }

        .c7-footer-logo {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 12px;
        }

        .c7-footer-desc {
            color: #94a3b8;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .c7-footer h4 {
            color: #fff;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .c7-footer a {
            color: #94a3b8;
            display: block;
            padding: 4px 0;
            transition: var(--transition);
        }

        .c7-footer a:hover {
            color: var(--accent);
            text-decoration: underline;
        }

        .c7-footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            margin-top: 30px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.9rem;
            color: #64748b;
        }

        @media (max-width: 992px) {
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 576px) {
            .c7-footer-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 其他 */
        .loading-btn {
            min-width: 180px;
        }

/* roulang page: category2 */
:root {
            --c7-primary: #1a1a2e;
            --c7-primary-light: #252547;
            --c7-accent: #f0a500;
            --c7-accent-hover: #d49200;
            --c7-accent-light: #fff3d6;
            --c7-surface: #ffffff;
            --c7-bg: #f5f6fa;
            --c7-bg-alt: #eef0f7;
            --c7-text: #1e1e2f;
            --c7-text-secondary: #5a5a72;
            --c7-text-muted: #8a8aa0;
            --c7-border: #e2e4ed;
            --c7-border-light: #f0f1f6;
            --c7-radius: 12px;
            --c7-radius-sm: 8px;
            --c7-radius-lg: 16px;
            --c7-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --c7-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --c7-shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --c7-shadow-xl: 0 20px 50px rgba(0, 0, 0, 0.13), 0 6px 18px rgba(0, 0, 0, 0.06);
            --c7-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-font: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --c7-container-max: 1200px;
            --c7-nav-height: 68px;
            --c7-section-gap: 72px;
            --c7-section-gap-sm: 48px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--c7-font);
            font-size: 16px;
            line-height: 1.7;
            color: var(--c7-text);
            background-color: var(--c7-bg);
            margin: 0;
            padding: 0;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--c7-transition-fast);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        input {
            font-family: inherit;
        }

        .container-c7 {
            width: 100%;
            max-width: var(--c7-container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== HEADER & NAV ========== */
        .c7-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--c7-surface);
            border-bottom: 1px solid var(--c7-border);
            box-shadow: var(--c7-shadow-sm);
            transition: box-shadow var(--c7-transition);
        }

        .c7-header.scrolled {
            box-shadow: var(--c7-shadow-lg);
        }

        .c7-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--c7-nav-height);
            gap: 24px;
        }

        .c7-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--c7-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: color var(--c7-transition-fast);
        }

        .c7-logo:hover {
            color: var(--c7-accent);
        }

        .c7-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--c7-radius-sm);
            background: linear-gradient(135deg, var(--c7-primary) 0%, var(--c7-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c7-accent);
            font-size: 1.2rem;
            font-weight: 900;
            flex-shrink: 0;
        }

        .c7-nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            flex-wrap: nowrap;
        }

        .c7-nav-links li {
            margin: 0;
            padding: 0;
        }

        .c7-nav-links a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--c7-text-secondary);
            transition: all var(--c7-transition-fast);
            white-space: nowrap;
            letter-spacing: 0.01em;
            position: relative;
        }

        .c7-nav-links a:hover {
            color: var(--c7-primary);
            background: var(--c7-bg-alt);
        }

        .c7-nav-links a.active {
            color: var(--c7-accent);
            background: var(--c7-accent-light);
            font-weight: 600;
        }

        .c7-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 3px;
            background: var(--c7-accent);
        }

        .c7-nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }

        .c7-search-input {
            width: 180px;
            padding: 8px 14px;
            border: 1.5px solid var(--c7-border);
            border-radius: 24px;
            font-size: 0.88rem;
            color: var(--c7-text);
            background: var(--c7-bg);
            transition: all var(--c7-transition-fast);
            outline: none;
        }

        .c7-search-input:focus {
            border-color: var(--c7-accent);
            box-shadow: 0 0 0 3px rgba(240, 165, 0, 0.1);
            background: var(--c7-surface);
            width: 210px;
        }

        .c7-search-input::placeholder {
            color: var(--c7-text-muted);
        }

        .c7-btn-search {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: var(--c7-accent);
            color: #fff;
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all var(--c7-transition-fast);
            flex-shrink: 0;
        }

        .c7-btn-search:hover {
            background: var(--c7-accent-hover);
            transform: scale(1.05);
        }

        .c7-mobile-toggle {
            display: none;
            width: 40px;
            height: 40px;
            border-radius: var(--c7-radius-sm);
            border: 1.5px solid var(--c7-border);
            background: var(--c7-surface);
            color: var(--c7-text);
            font-size: 1.2rem;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--c7-transition-fast);
            flex-shrink: 0;
        }

        .c7-mobile-toggle:hover {
            background: var(--c7-bg-alt);
            border-color: var(--c7-accent);
        }

        /* ========== HERO BANNER ========== */
        .c7-page-hero {
            position: relative;
            padding: 80px 0 70px;
            background: linear-gradient(135deg, var(--c7-primary) 0%, #1e2050 40%, #1a1a2e 100%);
            overflow: hidden;
            min-height: 380px;
            display: flex;
            align-items: center;
        }

        .c7-page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.22;
            z-index: 0;
            pointer-events: none;
        }

        .c7-page-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 80px;
            background: linear-gradient(to top, var(--c7-bg) 0%, transparent 100%);
            z-index: 1;
            pointer-events: none;
        }

        .c7-page-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
        }

        .c7-page-hero-badge {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 24px;
            background: rgba(240, 165, 0, 0.18);
            color: var(--c7-accent);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 18px;
            border: 1px solid rgba(240, 165, 0, 0.3);
        }

        .c7-page-hero h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: #ffffff;
            margin: 0 0 16px;
            letter-spacing: 0.02em;
            line-height: 1.25;
        }

        .c7-page-hero h1 span {
            color: var(--c7-accent);
        }

        .c7-page-hero-desc {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 680px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }

        .c7-page-hero-stats {
            display: flex;
            justify-content: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .c7-hero-stat {
            text-align: center;
        }

        .c7-hero-stat-num {
            font-size: 2rem;
            font-weight: 800;
            color: var(--c7-accent);
            line-height: 1;
        }

        .c7-hero-stat-label {
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        /* ========== SECTION COMMON ========== */
        .c7-section {
            padding: var(--c7-section-gap) 0;
        }

        .c7-section-sm {
            padding: var(--c7-section-gap-sm) 0;
        }

        .c7-section-header {
            text-align: center;
            margin-bottom: 44px;
        }

        .c7-section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin: 0 0 10px;
            letter-spacing: 0.01em;
        }

        .c7-section-header p {
            font-size: 1.02rem;
            color: var(--c7-text-secondary);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.65;
        }

        .c7-section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            color: var(--c7-accent);
            margin-bottom: 8px;
        }

        /* ========== RANKING SECTION ========== */
        .c7-rank-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .c7-rank-item {
            display: flex;
            align-items: center;
            gap: 16px;
            background: var(--c7-surface);
            border-radius: var(--c7-radius);
            padding: 16px 20px;
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            box-shadow: var(--c7-shadow-sm);
        }

        .c7-rank-item:hover {
            box-shadow: var(--c7-shadow-lg);
            transform: translateY(-2px);
            border-color: var(--c7-accent);
        }

        .c7-rank-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
            color: #fff;
        }

        .c7-rank-num.top1 {
            background: linear-gradient(135deg, #f0a500, #e09600);
        }
        .c7-rank-num.top2 {
            background: linear-gradient(135deg, #8899aa, #6b7d8e);
        }
        .c7-rank-num.top3 {
            background: linear-gradient(135deg, #b87351, #a0603f);
        }
        .c7-rank-num.normal {
            background: var(--c7-bg-alt);
            color: var(--c7-text-secondary);
        }

        .c7-rank-info {
            flex: 1;
            min-width: 0;
        }

        .c7-rank-info h4 {
            margin: 0 0 3px;
            font-size: 1rem;
            font-weight: 600;
            color: var(--c7-primary);
        }

        .c7-rank-info span {
            font-size: 0.82rem;
            color: var(--c7-text-muted);
        }

        .c7-rank-badge {
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.78rem;
            font-weight: 600;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .c7-rank-badge.hot {
            background: #fff0f0;
            color: #e94560;
        }
        .c7-rank-badge.trending {
            background: #fff8e7;
            color: #f0a500;
        }
        .c7-rank-badge.new {
            background: #e8f5e9;
            color: #2e7d32;
        }

        /* ========== GAME CARDS GRID ========== */
        .c7-game-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .c7-game-card {
            background: var(--c7-surface);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            border: 1px solid var(--c7-border-light);
            box-shadow: var(--c7-shadow-sm);
            transition: all var(--c7-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .c7-game-card:hover {
            box-shadow: var(--c7-shadow-xl);
            transform: translateY(-4px);
            border-color: var(--c7-accent);
        }

        .c7-game-card-img {
            width: 100%;
            aspect-ratio: 16 / 10;
            object-fit: cover;
            display: block;
        }

        .c7-game-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .c7-game-card-tags {
            display: flex;
            gap: 6px;
            flex-wrap: wrap;
            margin-bottom: 10px;
        }

        .c7-game-tag {
            padding: 3px 10px;
            border-radius: 12px;
            font-size: 0.74rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .c7-game-tag.moba {
            background: #eef2ff;
            color: #4f46e5;
        }
        .c7-game-tag.fps {
            background: #fef2f2;
            color: #dc2626;
        }
        .c7-game-tag.rpg {
            background: #fdf4ff;
            color: #a21caf;
        }
        .c7-game-tag.strategy {
            background: #ecfdf5;
            color: #059669;
        }
        .c7-game-tag.casual {
            background: #fff7ed;
            color: #ea580c;
        }

        .c7-game-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin: 0 0 8px;
            line-height: 1.3;
        }

        .c7-game-card p {
            font-size: 0.88rem;
            color: var(--c7-text-secondary);
            margin: 0 0 14px;
            line-height: 1.6;
            flex: 1;
        }

        .c7-game-card-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.8rem;
            color: var(--c7-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--c7-border-light);
        }

        .c7-game-card-meta i {
            margin-right: 4px;
        }

        .c7-game-card-rating {
            color: var(--c7-accent);
            font-weight: 700;
        }

        /* ========== FEATURED GAME ========== */
        .c7-featured-game {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            background: var(--c7-surface);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            border: 1px solid var(--c7-border-light);
            box-shadow: var(--c7-shadow);
        }

        .c7-featured-game-img-wrap {
            position: relative;
            aspect-ratio: 4 / 3;
            overflow: hidden;
        }

        .c7-featured-game-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .c7-featured-game-img-badge {
            position: absolute;
            top: 16px;
            left: 16px;
            padding: 6px 14px;
            border-radius: 20px;
            background: var(--c7-accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }

        .c7-featured-game-body {
            padding: 32px 32px 32px 0;
        }

        .c7-featured-game-body h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin: 0 0 8px;
        }

        .c7-featured-game-body .c7-featured-subtitle {
            font-size: 0.88rem;
            color: var(--c7-accent);
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 14px;
        }

        .c7-featured-game-body p {
            font-size: 0.95rem;
            color: var(--c7-text-secondary);
            line-height: 1.7;
            margin: 0 0 18px;
        }

        .c7-featured-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .c7-featured-stat {
            text-align: center;
        }

        .c7-featured-stat strong {
            display: block;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--c7-primary);
        }

        .c7-featured-stat span {
            font-size: 0.78rem;
            color: var(--c7-text-muted);
        }

        /* ========== BUTTONS ========== */
        .c7-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 11px 26px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.92rem;
            letter-spacing: 0.01em;
            transition: all var(--c7-transition);
            border: 2px solid transparent;
            cursor: pointer;
            text-decoration: none;
            white-space: nowrap;
        }

        .c7-btn-primary {
            background: var(--c7-accent);
            color: #fff;
            border-color: var(--c7-accent);
        }
        .c7-btn-primary:hover {
            background: var(--c7-accent-hover);
            border-color: var(--c7-accent-hover);
            color: #fff;
            box-shadow: 0 6px 20px rgba(240, 165, 0, 0.35);
            transform: translateY(-1px);
        }

        .c7-btn-outline {
            background: transparent;
            color: var(--c7-primary);
            border-color: var(--c7-border);
        }
        .c7-btn-outline:hover {
            border-color: var(--c7-accent);
            color: var(--c7-accent);
            background: var(--c7-accent-light);
            box-shadow: var(--c7-shadow-sm);
        }

        .c7-btn-lg {
            padding: 14px 34px;
            font-size: 1rem;
            border-radius: 28px;
        }

        .c7-btn-sm {
            padding: 7px 16px;
            font-size: 0.8rem;
            border-radius: 18px;
        }

        /* ========== STATS BANNER ========== */
        .c7-stats-banner {
            background: var(--c7-primary);
            border-radius: var(--c7-radius-lg);
            padding: 44px 40px;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
            box-shadow: var(--c7-shadow-lg);
        }

        .c7-stats-banner-item h3 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--c7-accent);
            margin: 0 0 4px;
            line-height: 1;
        }

        .c7-stats-banner-item p {
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
            margin: 0;
        }

        /* ========== FAQ ========== */
        .c7-faq-list {
            max-width: 780px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .c7-faq-item {
            background: var(--c7-surface);
            border-radius: var(--c7-radius);
            border: 1px solid var(--c7-border-light);
            overflow: hidden;
            transition: all var(--c7-transition);
            box-shadow: var(--c7-shadow-sm);
        }

        .c7-faq-item:hover {
            border-color: var(--c7-accent);
            box-shadow: var(--c7-shadow);
        }

        .c7-faq-question {
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--c7-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color var(--c7-transition-fast);
            gap: 12px;
            font-family: inherit;
        }

        .c7-faq-question:hover {
            color: var(--c7-accent);
        }

        .c7-faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--c7-bg-alt);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.75rem;
            transition: all var(--c7-transition);
            color: var(--c7-text-secondary);
        }

        .c7-faq-item.open .c7-faq-icon {
            background: var(--c7-accent);
            color: #fff;
            transform: rotate(45deg);
        }

        .c7-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 22px;
        }

        .c7-faq-item.open .c7-faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        .c7-faq-answer p {
            margin: 0;
            font-size: 0.9rem;
            color: var(--c7-text-secondary);
            line-height: 1.7;
        }

        /* ========== CTA SECTION ========== */
        .c7-cta-section {
            background: linear-gradient(135deg, var(--c7-primary) 0%, #1e2050 100%);
            border-radius: var(--c7-radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: var(--c7-shadow-xl);
        }

        .c7-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
            pointer-events: none;
        }

        .c7-cta-section>* {
            position: relative;
            z-index: 1;
        }

        .c7-cta-section h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
        }

        .c7-cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.75);
            max-width: 550px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }

        /* ========== FOOTER ========== */
        .c7-footer {
            background: var(--c7-primary);
            color: rgba(255, 255, 255, 0.8);
            padding: 52px 0 0;
            margin-top: var(--c7-section-gap);
        }

        .c7-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .c7-footer-logo {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }

        .c7-footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin: 0;
        }

        .c7-footer-grid h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
        }

        .c7-footer-grid a {
            display: block;
            font-size: 0.85rem;
            color: rgba(255, 255, 255, 0.6);
            padding: 4px 0;
            transition: color var(--c7-transition-fast);
        }

        .c7-footer-grid a:hover {
            color: var(--c7-accent);
        }

        .c7-footer-bottom {
            text-align: center;
            padding: 20px 0;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.45);
        }

        .c7-footer-bottom p {
            margin: 0;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .c7-game-cards-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 18px;
            }
            .c7-featured-game {
                grid-template-columns: 1fr;
                gap: 0;
            }
            .c7-featured-game-body {
                padding: 24px;
            }
            .c7-stats-banner {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
                padding: 32px 24px;
            }
            .c7-page-hero h1 {
                font-size: 2rem;
            }
            .c7-page-hero-stats {
                gap: 28px;
            }
            .c7-nav-links a {
                padding: 6px 10px;
                font-size: 0.82rem;
            }
            .c7-search-input {
                width: 130px;
            }
            .c7-search-input:focus {
                width: 150px;
            }
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --c7-nav-height: 60px;
                --c7-section-gap: 48px;
                --c7-section-gap-sm: 32px;
            }

            .c7-nav-links {
                display: none;
                position: absolute;
                top: var(--c7-nav-height);
                left: 0;
                right: 0;
                background: var(--c7-surface);
                flex-direction: column;
                padding: 12px 16px;
                border-bottom: 2px solid var(--c7-border);
                box-shadow: var(--c7-shadow-lg);
                gap: 2px;
                z-index: 1049;
            }
            .c7-nav-links.open {
                display: flex;
            }
            .c7-nav-links a {
                width: 100%;
                border-radius: var(--c7-radius-sm);
                padding: 10px 16px;
                font-size: 0.9rem;
            }
            .c7-mobile-toggle {
                display: flex;
            }
            .c7-search-input {
                width: 100px;
                font-size: 0.8rem;
            }
            .c7-search-input:focus {
                width: 120px;
            }
            .c7-page-hero {
                padding: 50px 0 44px;
                min-height: auto;
            }
            .c7-page-hero h1 {
                font-size: 1.65rem;
            }
            .c7-page-hero-desc {
                font-size: 0.9rem;
            }
            .c7-page-hero-stats {
                gap: 18px;
            }
            .c7-hero-stat-num {
                font-size: 1.4rem;
            }
            .c7-game-cards-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .c7-stats-banner {
                grid-template-columns: repeat(2, 1fr);
                gap: 14px;
                padding: 24px 16px;
            }
            .c7-stats-banner-item h3 {
                font-size: 1.6rem;
            }
            .c7-rank-item {
                flex-wrap: wrap;
                gap: 10px;
                padding: 14px 16px;
            }
            .c7-rank-num {
                width: 32px;
                height: 32px;
                font-size: 0.9rem;
            }
            .c7-featured-stats-row {
                gap: 16px;
            }
            .c7-cta-section {
                padding: 36px 20px;
            }
            .c7-cta-section h2 {
                font-size: 1.4rem;
            }
            .c7-section-header h2 {
                font-size: 1.5rem;
            }
            .c7-footer-grid {
                grid-template-columns: 1fr;
                gap: 22px;
                text-align: center;
            }
            .c7-footer-grid a {
                padding: 3px 0;
            }
            .c7-footer-desc {
                max-width: 400px;
                margin: 0 auto;
            }
        }

        @media (max-width: 520px) {
            .c7-page-hero h1 {
                font-size: 1.35rem;
            }
            .c7-page-hero-desc {
                font-size: 0.82rem;
            }
            .c7-page-hero-stats {
                gap: 12px;
                flex-direction: column;
                align-items: center;
            }
            .c7-stats-banner {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
                padding: 18px 12px;
            }
            .c7-stats-banner-item h3 {
                font-size: 1.3rem;
            }
            .c7-stats-banner-item p {
                font-size: 0.75rem;
            }
            .c7-faq-question {
                font-size: 0.9rem;
                padding: 14px 16px;
            }
            .c7-cta-section h2 {
                font-size: 1.2rem;
            }
            .c7-btn-lg {
                padding: 10px 22px;
                font-size: 0.88rem;
            }
            .c7-section-header h2 {
                font-size: 1.3rem;
            }
            .c7-search-input {
                width: 80px;
                padding: 6px 10px;
                font-size: 0.75rem;
            }
            .container-c7 {
                padding-left: 12px;
                padding-right: 12px;
            }
        }

/* roulang page: category3 */
/* ============ 设计变量 ============ */
        :root {
            --c7-primary: #5B1FAE;
            --c7-primary-light: #7B3FD4;
            --c7-primary-dark: #3E1078;
            --c7-accent: #F0A500;
            --c7-accent-light: #FFC940;
            --c7-accent-dark: #C88700;
            --c7-danger: #E63946;
            --c7-dark: #0F0F1A;
            --c7-dark-secondary: #1A1A2E;
            --c7-dark-card: #1E1E35;
            --c7-white: #FFFFFF;
            --c7-light-bg: #F7F6FB;
            --c7-gray-50: #F9FAFB;
            --c7-gray-100: #F3F4F6;
            --c7-gray-200: #E5E7EB;
            --c7-gray-300: #D1D5DB;
            --c7-gray-400: #9CA3AF;
            --c7-gray-500: #6B7280;
            --c7-gray-600: #4B5563;
            --c7-gray-700: #374151;
            --c7-gray-800: #1F2937;
            --c7-gray-900: #111827;
            --c7-text-primary: #1A1A2E;
            --c7-text-secondary: #4B5563;
            --c7-text-light: #9CA3AF;
            --c7-text-on-dark: #E5E7EB;
            --c7-border: #E5E7EB;
            --c7-border-light: #F3F4F6;
            --c7-radius-sm: 8px;
            --c7-radius: 12px;
            --c7-radius-lg: 16px;
            --c7-radius-xl: 20px;
            --c7-radius-full: 50px;
            --c7-shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
            --c7-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --c7-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --c7-shadow-md: 0 8px 28px rgba(0, 0, 0, 0.10);
            --c7-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
            --c7-shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.18);
            --c7-shadow-glow: 0 0 32px rgba(91, 31, 174, 0.25);
            --c7-transition-fast: 0.18s ease;
            --c7-transition: 0.28s ease;
            --c7-transition-slow: 0.4s ease;
            --c7-font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --c7-container-max: 1240px;
            --c7-header-height: 72px;
        }

        /* ============ 基础 Reset/Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--c7-font-sans);
            font-weight: 400;
            line-height: 1.7;
            color: var(--c7-text-primary);
            background-color: var(--c7-light-bg);
            overflow-x: hidden;
            min-height: 100vh;
            padding-top: var(--c7-header-height);
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--c7-transition-fast);
        }
        a:hover {
            color: var(--c7-primary);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            font-family: inherit;
            border: none;
            outline: none;
        }
        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--c7-primary-light);
            outline-offset: 3px;
            border-radius: 4px;
        }
        input {
            font-family: inherit;
        }
        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        /* ============ 容器 ============ */
        .container-c7 {
            max-width: var(--c7-container-max);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        /* ============ Header / 导航 ============ */
        .c7-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--c7-header-height);
            background: var(--c7-white);
            border-bottom: 1px solid var(--c7-border-light);
            display: flex;
            align-items: center;
            transition: box-shadow var(--c7-transition), background var(--c7-transition);
        }
        .c7-header.scrolled {
            box-shadow: var(--c7-shadow-md);
            background: rgba(255, 255, 255, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }
        .c7-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--c7-container-max);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
        }
        .c7-logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--c7-primary);
            letter-spacing: -0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
            transition: color var(--c7-transition-fast);
        }
        .c7-logo:hover {
            color: var(--c7-primary-dark);
        }
        .c7-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--c7-radius-sm);
            background: linear-gradient(135deg, var(--c7-primary) 0%, var(--c7-primary-light) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c7-white);
            font-size: 1.2rem;
            font-weight: 900;
            flex-shrink: 0;
        }
        .c7-nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .c7-nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .c7-nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: var(--c7-radius-full);
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--c7-text-secondary);
            transition: all var(--c7-transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .c7-nav-links li a:hover {
            color: var(--c7-primary);
            background: rgba(91, 31, 174, 0.06);
        }
        .c7-nav-links li a.active {
            color: var(--c7-white);
            background: var(--c7-primary);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(91, 31, 174, 0.3);
        }
        .c7-nav-links li a.active:hover {
            background: var(--c7-primary-dark);
            color: var(--c7-white);
        }

        /* 移动端导航 */
        .c7-nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: var(--c7-radius-sm);
            align-items: center;
            justify-content: center;
            color: var(--c7-text-primary);
            font-size: 1.4rem;
            transition: background var(--c7-transition-fast);
        }
        .c7-nav-toggle:hover {
            background: var(--c7-gray-100);
        }
        .c7-mobile-nav {
            display: none;
            position: fixed;
            top: var(--c7-header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--c7-white);
            z-index: 1040;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 6px;
        }
        .c7-mobile-nav.open {
            display: flex;
        }
        .c7-mobile-nav a {
            display: block;
            padding: 14px 18px;
            border-radius: var(--c7-radius);
            font-size: 1.05rem;
            font-weight: 500;
            color: var(--c7-text-primary);
            transition: all var(--c7-transition-fast);
            border: 1px solid transparent;
        }
        .c7-mobile-nav a:hover {
            background: var(--c7-gray-50);
            border-color: var(--c7-border);
        }
        .c7-mobile-nav a.active {
            color: var(--c7-white);
            background: var(--c7-primary);
            border-color: var(--c7-primary);
            font-weight: 600;
        }
        .c7-nav-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1035;
        }
        .c7-nav-overlay.open {
            display: block;
        }

        /* 搜索入口 */
        .c7-header-search {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .c7-search-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--c7-gray-100);
            border: none;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--c7-text-secondary);
            font-size: 1rem;
            transition: all var(--c7-transition-fast);
        }
        .c7-search-btn:hover {
            background: var(--c7-gray-200);
            color: var(--c7-primary);
        }

        /* ============ 页面 Banner ============ */
        .c7-page-banner {
            position: relative;
            background: var(--c7-dark-secondary);
            min-height: 340px;
            display: flex;
            align-items: center;
            overflow: hidden;
            isolation: isolate;
        }
        .c7-page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 15, 26, 0.88) 0%, rgba(26, 26, 46, 0.78) 40%, rgba(91, 31, 174, 0.55) 100%);
            z-index: 1;
        }
        .c7-page-banner .c7-banner-bg {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 0;
            filter: brightness(0.5) saturate(0.7);
        }
        .c7-banner-content {
            position: relative;
            z-index: 2;
            padding: 60px 0;
            width: 100%;
        }
        .c7-banner-tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(240, 165, 0, 0.2);
            color: var(--c7-accent-light);
            border-radius: var(--c7-radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.04em;
            margin-bottom: 16px;
            border: 1px solid rgba(240, 165, 0, 0.3);
        }
        .c7-banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--c7-white);
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }
        .c7-banner-content p {
            font-size: 1.15rem;
            color: var(--c7-text-on-dark);
            max-width: 640px;
            line-height: 1.8;
            opacity: 0.9;
        }
        .c7-banner-stats {
            display: flex;
            gap: 36px;
            margin-top: 24px;
            flex-wrap: wrap;
        }
        .c7-banner-stat {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--c7-white);
        }
        .c7-banner-stat .c7-stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--c7-accent-light);
            line-height: 1;
        }
        .c7-banner-stat .c7-stat-label {
            font-size: 0.9rem;
            color: var(--c7-text-on-dark);
            opacity: 0.8;
        }

        /* ============ 板块通用 ============ */
        .c7-section {
            padding: 56px 0;
        }
        .c7-section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .c7-section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--c7-text-primary);
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }
        .c7-section-header p {
            color: var(--c7-text-secondary);
            font-size: 1rem;
            max-width: 560px;
            margin: 0 auto;
        }
        .c7-section-label {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(91, 31, 174, 0.08);
            color: var(--c7-primary);
            border-radius: var(--c7-radius-full);
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            margin-bottom: 10px;
        }

        /* ============ 资讯分类标签 ============ */
        .c7-tag-filters {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            padding: 0 0 16px;
        }
        .c7-tag-filter {
            padding: 9px 20px;
            border-radius: var(--c7-radius-full);
            font-size: 0.9rem;
            font-weight: 500;
            border: 1.5px solid var(--c7-border);
            background: var(--c7-white);
            color: var(--c7-text-secondary);
            cursor: pointer;
            transition: all var(--c7-transition-fast);
            white-space: nowrap;
        }
        .c7-tag-filter:hover {
            border-color: var(--c7-primary-light);
            color: var(--c7-primary);
            background: rgba(91, 31, 174, 0.03);
        }
        .c7-tag-filter.active {
            background: var(--c7-primary);
            color: var(--c7-white);
            border-color: var(--c7-primary);
            font-weight: 600;
            box-shadow: 0 3px 12px rgba(91, 31, 174, 0.28);
        }

        /* ============ 资讯卡片 ============ */
        .c7-news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .c7-news-card {
            background: var(--c7-white);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .c7-news-card:hover {
            box-shadow: var(--c7-shadow-md);
            transform: translateY(-3px);
            border-color: var(--c7-border);
        }
        .c7-news-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--c7-gray-100);
        }
        .c7-news-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--c7-transition-slow);
        }
        .c7-news-card:hover .c7-news-card-img-wrap img {
            transform: scale(1.06);
        }
        .c7-news-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 5px 12px;
            border-radius: var(--c7-radius-full);
            font-size: 0.78rem;
            font-weight: 600;
            background: var(--c7-primary);
            color: var(--c7-white);
            z-index: 1;
            letter-spacing: 0.02em;
        }
        .c7-news-card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .c7-news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--c7-text-light);
        }
        .c7-news-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .c7-news-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--c7-text-primary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color var(--c7-transition-fast);
        }
        .c7-news-card:hover .c7-news-card-title {
            color: var(--c7-primary);
        }
        .c7-news-card-excerpt {
            font-size: 0.9rem;
            color: var(--c7-text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .c7-news-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 8px;
            border-top: 1px solid var(--c7-border-light);
            margin-top: auto;
        }
        .c7-read-more {
            font-size: 0.88rem;
            font-weight: 600;
            color: var(--c7-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: all var(--c7-transition-fast);
        }
        .c7-read-more:hover {
            color: var(--c7-primary-dark);
            gap: 8px;
        }
        .c7-read-more i {
            font-size: 0.7rem;
            transition: transform var(--c7-transition-fast);
        }
        .c7-read-more:hover i {
            transform: translateX(3px);
        }

        /* 大卡片（头条） */
        .c7-news-card.featured {
            grid-column: 1 / -1;
            flex-direction: row;
        }
        .c7-news-card.featured .c7-news-card-img-wrap {
            width: 48%;
            aspect-ratio: 16 / 9;
            flex-shrink: 0;
        }
        .c7-news-card.featured .c7-news-card-body {
            padding: 28px 28px;
            justify-content: center;
        }
        .c7-news-card.featured .c7-news-card-title {
            font-size: 1.4rem;
            -webkit-line-clamp: 3;
        }
        .c7-news-card.featured .c7-news-card-excerpt {
            -webkit-line-clamp: 4;
            font-size: 0.95rem;
        }

        /* ============ 热门推荐横卡 ============ */
        .c7-hot-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .c7-hot-card {
            background: var(--c7-white);
            border-radius: var(--c7-radius);
            overflow: hidden;
            border: 1px solid var(--c7-border-light);
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px;
            transition: all var(--c7-transition);
            cursor: pointer;
        }
        .c7-hot-card:hover {
            box-shadow: var(--c7-shadow);
            border-color: var(--c7-border);
            transform: translateY(-2px);
        }
        .c7-hot-card-img {
            width: 90px;
            height: 70px;
            border-radius: var(--c7-radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--c7-gray-100);
        }
        .c7-hot-card-info {
            flex: 1;
            min-width: 0;
        }
        .c7-hot-card-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--c7-primary);
            opacity: 0.3;
            line-height: 1;
            flex-shrink: 0;
            width: 36px;
            text-align: center;
        }
        .c7-hot-card-title {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--c7-text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .c7-hot-card-meta {
            font-size: 0.78rem;
            color: var(--c7-text-light);
            margin-top: 4px;
        }

        /* ============ 订阅 CTA ============ */
        .c7-cta-section {
            background: linear-gradient(135deg, var(--c7-dark-secondary) 0%, var(--c7-dark) 100%);
            border-radius: var(--c7-radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: var(--c7-white);
            position: relative;
            overflow: hidden;
            isolation: isolate;
        }
        .c7-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(91, 31, 174, 0.35) 0%, transparent 60%);
            z-index: 0;
        }
        .c7-cta-section>* {
            position: relative;
            z-index: 1;
        }
        .c7-cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .c7-cta-section p {
            color: var(--c7-text-on-dark);
            opacity: 0.85;
            margin-bottom: 24px;
            font-size: 1rem;
        }
        .c7-cta-form {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .c7-cta-form input {
            flex: 1;
            min-width: 220px;
            padding: 13px 18px;
            border-radius: var(--c7-radius-full);
            border: 2px solid rgba(255, 255, 255, 0.25);
            background: rgba(255, 255, 255, 0.1);
            color: var(--c7-white);
            font-size: 0.95rem;
            transition: all var(--c7-transition-fast);
        }
        .c7-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }
        .c7-cta-form input:focus {
            border-color: var(--c7-accent);
            background: rgba(255, 255, 255, 0.16);
            outline: none;
            box-shadow: 0 0 0 4px rgba(240, 165, 0, 0.15);
        }
        .c7-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--c7-radius-full);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--c7-transition);
            white-space: nowrap;
            cursor: pointer;
            border: none;
        }
        .c7-btn-primary {
            background: var(--c7-primary);
            color: var(--c7-white);
            box-shadow: 0 4px 16px rgba(91, 31, 174, 0.35);
        }
        .c7-btn-primary:hover {
            background: var(--c7-primary-dark);
            box-shadow: 0 6px 22px rgba(91, 31, 174, 0.45);
            transform: translateY(-1px);
            color: var(--c7-white);
        }
        .c7-btn-accent {
            background: var(--c7-accent);
            color: var(--c7-dark);
            box-shadow: 0 4px 16px rgba(240, 165, 0, 0.35);
        }
        .c7-btn-accent:hover {
            background: var(--c7-accent-light);
            box-shadow: 0 6px 22px rgba(240, 165, 0, 0.45);
            transform: translateY(-1px);
            color: var(--c7-dark);
        }
        .c7-btn-outline {
            background: transparent;
            border: 2px solid var(--c7-primary);
            color: var(--c7-primary);
        }
        .c7-btn-outline:hover {
            background: var(--c7-primary);
            color: var(--c7-white);
        }
        .c7-btn-sm {
            padding: 7px 16px;
            font-size: 0.82rem;
            border-radius: var(--c7-radius-full);
        }
        .c7-btn-xs {
            padding: 5px 12px;
            font-size: 0.78rem;
            border-radius: var(--c7-radius-full);
        }

        /* ============ FAQ ============ */
        .c7-faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .c7-faq-item {
            background: var(--c7-white);
            border-radius: var(--c7-radius);
            border: 1px solid var(--c7-border-light);
            overflow: hidden;
            transition: all var(--c7-transition-fast);
        }
        .c7-faq-item:hover {
            border-color: var(--c7-border);
            box-shadow: var(--c7-shadow-xs);
        }
        .c7-faq-question {
            width: 100%;
            padding: 18px 22px;
            background: none;
            border: none;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--c7-text-primary);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            transition: color var(--c7-transition-fast);
            line-height: 1.5;
        }
        .c7-faq-question:hover {
            color: var(--c7-primary);
        }
        .c7-faq-question i {
            font-size: 0.8rem;
            color: var(--c7-text-light);
            transition: all var(--c7-transition);
            flex-shrink: 0;
        }
        .c7-faq-item.open .c7-faq-question i {
            transform: rotate(180deg);
            color: var(--c7-primary);
        }
        .c7-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--c7-transition-slow), padding var(--c7-transition);
        }
        .c7-faq-item.open .c7-faq-answer {
            max-height: 400px;
        }
        .c7-faq-answer-inner {
            padding: 0 22px 18px;
            color: var(--c7-text-secondary);
            font-size: 0.93rem;
            line-height: 1.75;
        }

        /* ============ 分页 ============ */
        .c7-pagination {
            display: flex;
            justify-content: center;
            gap: 6px;
            margin-top: 36px;
            flex-wrap: wrap;
        }
        .c7-pagination a,
        .c7-pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--c7-radius-sm);
            font-weight: 500;
            font-size: 0.9rem;
            transition: all var(--c7-transition-fast);
            border: 1px solid var(--c7-border);
            background: var(--c7-white);
            color: var(--c7-text-secondary);
        }
        .c7-pagination a:hover {
            background: var(--c7-gray-50);
            border-color: var(--c7-primary-light);
            color: var(--c7-primary);
        }
        .c7-pagination .active {
            background: var(--c7-primary);
            color: var(--c7-white);
            border-color: var(--c7-primary);
            font-weight: 700;
            box-shadow: 0 3px 10px rgba(91, 31, 174, 0.3);
        }

        /* ============ Footer ============ */
        .c7-footer {
            background: var(--c7-dark);
            color: var(--c7-text-on-dark);
            padding: 50px 0 0;
            margin-top: 20px;
        }
        .c7-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
        }
        .c7-footer-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--c7-white);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .c7-footer-desc {
            font-size: 0.9rem;
            line-height: 1.7;
            opacity: 0.75;
            max-width: 280px;
        }
        .c7-footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--c7-white);
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .c7-footer a {
            display: block;
            padding: 5px 0;
            font-size: 0.88rem;
            color: var(--c7-text-on-dark);
            opacity: 0.7;
            transition: all var(--c7-transition-fast);
        }
        .c7-footer a:hover {
            opacity: 1;
            color: var(--c7-accent-light);
            padding-left: 4px;
        }
        .c7-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 18px 0;
            text-align: center;
            font-size: 0.82rem;
            opacity: 0.6;
        }

        /* ============ 背景色板块变体 ============ */
        .c7-bg-white {
            background: var(--c7-white);
        }
        .c7-bg-light {
            background: var(--c7-light-bg);
        }
        .c7-bg-dark-section {
            background: var(--c7-dark-secondary);
            color: var(--c7-white);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .c7-news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .c7-news-card.featured {
                flex-direction: column;
            }
            .c7-news-card.featured .c7-news-card-img-wrap {
                width: 100%;
                aspect-ratio: 16 / 9;
            }
            .c7-hot-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .c7-banner-content h1 {
                font-size: 2.2rem;
            }
            .c7-section {
                padding: 40px 0;
            }
        }

        @media (max-width: 768px) {
            :root {
                --c7-header-height: 64px;
            }
            .c7-nav-desktop {
                display: none;
            }
            .c7-nav-toggle {
                display: flex;
            }
            .c7-news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .c7-news-card.featured .c7-news-card-body {
                padding: 18px;
            }
            .c7-news-card.featured .c7-news-card-title {
                font-size: 1.15rem;
            }
            .c7-hot-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .c7-banner-content h1 {
                font-size: 1.7rem;
            }
            .c7-banner-content p {
                font-size: 0.95rem;
            }
            .c7-banner-stats {
                gap: 20px;
            }
            .c7-banner-stat .c7-stat-num {
                font-size: 1.3rem;
            }
            .c7-page-banner {
                min-height: 260px;
            }
            .c7-cta-section {
                padding: 32px 20px;
                border-radius: var(--c7-radius);
            }
            .c7-cta-section h3 {
                font-size: 1.3rem;
            }
            .c7-cta-form {
                flex-direction: column;
                align-items: stretch;
            }
            .c7-cta-form input {
                min-width: auto;
            }
            .c7-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .c7-section-header h2 {
                font-size: 1.5rem;
            }
            .c7-section {
                padding: 32px 0;
            }
            .c7-tag-filters {
                gap: 6px;
            }
            .c7-tag-filter {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            .c7-faq-question {
                font-size: 0.93rem;
                padding: 15px 16px;
            }
            .c7-faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .container-c7 {
                padding-left: 14px;
                padding-right: 14px;
            }
            .c7-logo {
                font-size: 1.3rem;
            }
            .c7-logo-icon {
                width: 30px;
                height: 30px;
                font-size: 1rem;
            }
            .c7-banner-content {
                padding: 36px 0;
            }
            .c7-banner-content h1 {
                font-size: 1.4rem;
            }
            .c7-banner-stats {
                gap: 14px;
                flex-direction: column;
            }
            .c7-news-card-body {
                padding: 14px;
            }
            .c7-news-card-title {
                font-size: 0.98rem;
            }
            .c7-hot-card {
                padding: 12px;
                gap: 10px;
            }
            .c7-hot-card-img {
                width: 64px;
                height: 50px;
            }
            .c7-hot-card-title {
                font-size: 0.85rem;
            }
            .c7-pagination a,
            .c7-pagination span {
                width: 34px;
                height: 34px;
                font-size: 0.8rem;
            }
        }

/* roulang page: category1 */
:root {
            --c7-primary: #1e3a5f;
            --c7-primary-dark: #152a45;
            --c7-accent: #e8590c;
            --c7-accent-hover: #c94a0a;
            --c7-gold: #f0c040;
            --c7-gold-dark: #d4a832;
            --c7-bg: #f5f6f8;
            --c7-surface: #ffffff;
            --c7-surface-alt: #eef1f5;
            --c7-text: #1a1d23;
            --c7-text-secondary: #5c6370;
            --c7-text-muted: #8a909c;
            --c7-border: #dde1e7;
            --c7-border-light: #e8ebf0;
            --c7-radius-sm: 8px;
            --c7-radius: 12px;
            --c7-radius-lg: 16px;
            --c7-radius-xl: 20px;
            --c7-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
            --c7-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            --c7-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
            --c7-shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.16);
            --c7-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-font-heading: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            --c7-font-body: 'PingFang SC', 'Microsoft YaHei', 'Segoe UI', system-ui, sans-serif;
            --c7-container-max: 1260px;
            --c7-nav-height: 68px;
            --c7-section-gap: 64px;
            --c7-card-gap: 24px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--c7-font-body);
            font-size: 16px;
            line-height: 1.7;
            color: var(--c7-text);
            background-color: var(--c7-bg);
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--c7-transition);
        }
        a:hover {
            color: var(--c7-accent);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            font-family: inherit;
            transition: all var(--c7-transition);
        }
        input {
            font-family: inherit;
            outline: none;
        }

        .container-c7 {
            max-width: var(--c7-container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ========== HEADER & NAV ========== */
        .c7-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--c7-surface);
            border-bottom: 1px solid var(--c7-border);
            box-shadow: var(--c7-shadow-sm);
            height: var(--c7-nav-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--c7-transition);
        }
        .c7-header.scrolled {
            box-shadow: var(--c7-shadow);
        }
        .c7-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--c7-container-max);
            margin: 0 auto;
            padding: 0 20px;
            height: 100%;
        }
        .c7-logo {
            font-family: var(--c7-font-heading);
            font-size: 1.55rem;
            font-weight: 700;
            color: var(--c7-primary);
            letter-spacing: 0.5px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .c7-logo i {
            color: var(--c7-accent);
            font-size: 1.65rem;
        }
        .c7-logo:hover {
            color: var(--c7-primary-dark);
        }
        .c7-nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
            justify-content: center;
        }
        .c7-nav-links li {
            margin: 0;
        }
        .c7-nav-links a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: var(--c7-radius-sm);
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--c7-text-secondary);
            white-space: nowrap;
            position: relative;
            transition: all var(--c7-transition);
            letter-spacing: 0.2px;
        }
        .c7-nav-links a:hover {
            color: var(--c7-accent);
            background: rgba(232, 89, 12, 0.05);
        }
        .c7-nav-links a.active {
            color: var(--c7-accent);
            font-weight: 600;
            background: rgba(232, 89, 12, 0.08);
        }
        .c7-nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 3px;
            background: var(--c7-accent);
            border-radius: 3px;
        }
        .c7-nav-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .c7-nav-search {
            position: relative;
            display: flex;
            align-items: center;
        }
        .c7-nav-search input {
            padding: 8px 14px 8px 36px;
            border: 1px solid var(--c7-border);
            border-radius: 24px;
            font-size: 0.9rem;
            width: 200px;
            background: var(--c7-bg);
            color: var(--c7-text);
            transition: all var(--c7-transition);
        }
        .c7-nav-search input:focus {
            border-color: var(--c7-accent);
            box-shadow: 0 0 0 3px rgba(232, 89, 12, 0.1);
            width: 240px;
        }
        .c7-nav-search i {
            position: absolute;
            left: 14px;
            color: var(--c7-text-muted);
            font-size: 0.85rem;
            pointer-events: none;
        }
        .c7-nav-toggler {
            display: none;
            background: none;
            border: 1px solid var(--c7-border);
            border-radius: var(--c7-radius-sm);
            padding: 8px 12px;
            font-size: 1.3rem;
            color: var(--c7-text);
            transition: all var(--c7-transition);
        }
        .c7-nav-toggler:hover {
            background: var(--c7-bg);
            color: var(--c7-accent);
        }
        @media (max-width: 1024px) {
            .c7-nav-links a {
                padding: 6px 10px;
                font-size: 0.85rem;
            }
            .c7-nav-search input {
                width: 150px;
            }
            .c7-nav-search input:focus {
                width: 180px;
            }
        }
        @media (max-width: 768px) {
            .c7-nav-toggler {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .c7-nav-links {
                display: none;
                position: absolute;
                top: var(--c7-nav-height);
                left: 0;
                right: 0;
                background: var(--c7-surface);
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                padding: 8px 16px;
                border-bottom: 2px solid var(--c7-border);
                box-shadow: var(--c7-shadow-lg);
                z-index: 1040;
            }
            .c7-nav-links.show {
                display: flex;
            }
            .c7-nav-links a {
                display: block;
                padding: 12px 16px;
                border-radius: var(--c7-radius-sm);
                text-align: left;
                font-size: 0.95rem;
            }
            .c7-nav-links a.active::after {
                display: none;
            }
            .c7-nav-search {
                display: none;
            }
            .c7-nav-right {
                gap: 8px;
            }
        }
        @media (max-width: 520px) {
            .c7-logo {
                font-size: 1.25rem;
            }
            .c7-logo i {
                font-size: 1.35rem;
            }
            .c7-header-inner {
                padding: 0 12px;
            }
        }

        /* ========== PAGE BANNER ========== */
        .c7-page-banner {
            position: relative;
            background: linear-gradient(135deg, #0f1923 0%, #1a2d3d 40%, #1e3a5f 100%);
            background-image: url('assets/images/backpic/back-2.webp');
            background-size: cover;
            background-position: center 30%;
            background-blend-mode: overlay;
            padding: 70px 0 60px;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .c7-page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 25, 35, 0.75) 0%, rgba(30, 58, 95, 0.85) 100%);
            z-index: 1;
        }
        .c7-page-banner .container-c7 {
            position: relative;
            z-index: 2;
        }
        .c7-page-banner .c7-badge-row {
            display: flex;
            justify-content: center;
            gap: 10px;
            flex-wrap: wrap;
            margin-bottom: 18px;
        }
        .c7-page-banner .c7-badge-tag {
            display: inline-block;
            padding: 5px 14px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.25);
            border-radius: 20px;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.9);
            letter-spacing: 0.3px;
            backdrop-filter: blur(4px);
        }
        .c7-page-banner h1 {
            font-family: var(--c7-font-heading);
            font-size: 2.6rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
            color: #fff;
        }
        .c7-page-banner h1 span {
            color: var(--c7-gold);
        }
        .c7-page-banner .c7-banner-sub {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.8);
            max-width: 650px;
            margin: 0 auto 24px;
            line-height: 1.6;
        }
        .c7-breadcrumb-row {
            display: flex;
            justify-content: center;
            gap: 6px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.7);
            align-items: center;
            flex-wrap: wrap;
        }
        .c7-breadcrumb-row a {
            color: rgba(255, 255, 255, 0.85);
        }
        .c7-breadcrumb-row a:hover {
            color: var(--c7-gold);
        }
        .c7-breadcrumb-row .separator {
            color: rgba(255, 255, 255, 0.4);
        }
        @media (max-width: 768px) {
            .c7-page-banner {
                padding: 48px 0 40px;
            }
            .c7-page-banner h1 {
                font-size: 2rem;
            }
            .c7-page-banner .c7-banner-sub {
                font-size: 0.95rem;
            }
        }
        @media (max-width: 520px) {
            .c7-page-banner h1 {
                font-size: 1.6rem;
            }
            .c7-page-banner .c7-banner-sub {
                font-size: 0.88rem;
            }
        }

        /* ========== STATS STRIP ========== */
        .c7-stats-strip {
            background: var(--c7-surface);
            border-bottom: 1px solid var(--c7-border-light);
            padding: 28px 0;
        }
        .c7-stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .c7-stat-item .c7-stat-num {
            font-family: var(--c7-font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--c7-accent);
            line-height: 1.2;
        }
        .c7-stat-item .c7-stat-label {
            font-size: 0.9rem;
            color: var(--c7-text-secondary);
            margin-top: 4px;
        }
        @media (max-width: 768px) {
            .c7-stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .c7-stat-item .c7-stat-num {
                font-size: 1.6rem;
            }
        }
        @media (max-width: 520px) {
            .c7-stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
        }

        /* ========== MAIN CONTENT LAYOUT ========== */
        .c7-main-section {
            padding: var(--c7-section-gap) 0;
        }
        .c7-main-section--alt {
            background: var(--c7-surface);
        }
        .c7-section-header {
            margin-bottom: 36px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .c7-section-title {
            font-family: var(--c7-font-heading);
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--c7-text);
            position: relative;
            padding-left: 16px;
            margin: 0;
        }
        .c7-section-title::before {
            content: '';
            position: absolute;
            left: 0;
            top: 6px;
            bottom: 6px;
            width: 4px;
            background: var(--c7-accent);
            border-radius: 2px;
        }
        .c7-section-title span {
            color: var(--c7-accent);
        }
        .c7-filter-row {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }
        .c7-filter-btn {
            padding: 7px 18px;
            border-radius: 22px;
            font-size: 0.88rem;
            font-weight: 500;
            background: var(--c7-surface);
            border: 1px solid var(--c7-border);
            color: var(--c7-text-secondary);
            transition: all var(--c7-transition);
            white-space: nowrap;
        }
        .c7-filter-btn:hover {
            border-color: var(--c7-accent);
            color: var(--c7-accent);
            background: rgba(232, 89, 12, 0.04);
        }
        .c7-filter-btn.active {
            background: var(--c7-accent);
            color: #fff;
            border-color: var(--c7-accent);
            font-weight: 600;
        }

        /* ========== NEWS CARD ========== */
        .c7-news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--c7-card-gap);
        }
        .c7-news-card {
            background: var(--c7-surface);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            display: flex;
            flex-direction: column;
            height: 100%;
            box-shadow: var(--c7-shadow-sm);
        }
        .c7-news-card:hover {
            box-shadow: var(--c7-shadow-lg);
            transform: translateY(-3px);
            border-color: var(--c7-border);
        }
        .c7-news-card-img {
            position: relative;
            aspect-ratio: 16 / 10;
            overflow: hidden;
            background: #e9ecef;
        }
        .c7-news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .c7-news-card:hover .c7-news-card-img img {
            transform: scale(1.06);
        }
        .c7-news-card-img .c7-card-category {
            position: absolute;
            top: 12px;
            left: 12px;
            padding: 4px 12px;
            background: var(--c7-accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            border-radius: 14px;
            letter-spacing: 0.3px;
            z-index: 2;
        }
        .c7-news-card-body {
            padding: 18px 20px 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .c7-news-card-body h3 {
            font-family: var(--c7-font-heading);
            font-size: 1.08rem;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
            color: var(--c7-text);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .c7-news-card-body h3 a {
            color: inherit;
        }
        .c7-news-card-body h3 a:hover {
            color: var(--c7-accent);
        }
        .c7-news-card-body .c7-card-excerpt {
            font-size: 0.9rem;
            color: var(--c7-text-secondary);
            line-height: 1.6;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .c7-news-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 0.82rem;
            color: var(--c7-text-muted);
            padding-top: 12px;
            border-top: 1px solid var(--c7-border-light);
        }
        .c7-news-card-meta .c7-meta-date i {
            margin-right: 4px;
        }
        .c7-read-more {
            font-weight: 600;
            color: var(--c7-accent);
            font-size: 0.85rem;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap var(--c7-transition);
        }
        .c7-read-more:hover {
            gap: 8px;
            color: var(--c7-accent-hover);
        }
        @media (max-width: 1024px) {
            .c7-news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 600px) {
            .c7-news-grid {
                grid-template-columns: 1fr;
            }
        }

        /* ========== FEATURED SECTION ========== */
        .c7-featured-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: var(--c7-card-gap);
        }
        .c7-featured-main {
            background: var(--c7-surface);
            border-radius: var(--c7-radius-lg);
            overflow: hidden;
            border: 1px solid var(--c7-border-light);
            box-shadow: var(--c7-shadow);
            transition: all var(--c7-transition);
            display: flex;
            flex-direction: column;
        }
        .c7-featured-main:hover {
            box-shadow: var(--c7-shadow-lg);
            transform: translateY(-2px);
        }
        .c7-featured-main-img {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: #e9ecef;
        }
        .c7-featured-main-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .c7-featured-main:hover .c7-featured-main-img img {
            transform: scale(1.05);
        }
        .c7-featured-main-body {
            padding: 24px 28px 28px;
            flex: 1;
        }
        .c7-featured-main-body .c7-featured-label {
            display: inline-block;
            padding: 4px 14px;
            background: var(--c7-accent);
            color: #fff;
            font-size: 0.8rem;
            font-weight: 600;
            border-radius: 14px;
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }
        .c7-featured-main-body h3 {
            font-family: var(--c7-font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.5;
            color: var(--c7-text);
        }
        .c7-featured-main-body p {
            color: var(--c7-text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .c7-featured-side {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .c7-featured-side-item {
            background: var(--c7-surface);
            border-radius: var(--c7-radius);
            padding: 18px 20px;
            border: 1px solid var(--c7-border-light);
            display: flex;
            gap: 14px;
            align-items: flex-start;
            transition: all var(--c7-transition);
            box-shadow: var(--c7-shadow-sm);
            cursor: pointer;
        }
        .c7-featured-side-item:hover {
            box-shadow: var(--c7-shadow);
            border-color: var(--c7-border);
            transform: translateX(3px);
        }
        .c7-featured-side-num {
            font-family: var(--c7-font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--c7-accent);
            flex-shrink: 0;
            min-width: 36px;
            text-align: center;
        }
        .c7-featured-side-info h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--c7-text);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .c7-featured-side-info .c7-side-date {
            font-size: 0.8rem;
            color: var(--c7-text-muted);
        }
        @media (max-width: 768px) {
            .c7-featured-grid {
                grid-template-columns: 1fr;
            }
            .c7-featured-side {
                flex-direction: row;
                flex-wrap: wrap;
            }
            .c7-featured-side-item {
                flex: 1 1 calc(50% - 8px);
                min-width: 200px;
            }
        }
        @media (max-width: 520px) {
            .c7-featured-side-item {
                flex: 1 1 100%;
            }
            .c7-featured-main-body {
                padding: 16px 18px 20px;
            }
            .c7-featured-main-body h3 {
                font-size: 1.15rem;
            }
        }

        /* ========== PAGINATION ========== */
        .c7-pagination-row {
            display: flex;
            justify-content: center;
            margin-top: 40px;
        }
        .c7-pagination {
            display: flex;
            gap: 6px;
            list-style: none;
            padding: 0;
            margin: 0;
            flex-wrap: wrap;
            justify-content: center;
        }
        .c7-pagination li a,
        .c7-pagination li span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 10px;
            border-radius: var(--c7-radius-sm);
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid var(--c7-border);
            background: var(--c7-surface);
            color: var(--c7-text-secondary);
            transition: all var(--c7-transition);
        }
        .c7-pagination li a:hover {
            background: rgba(232, 89, 12, 0.06);
            border-color: var(--c7-accent);
            color: var(--c7-accent);
        }
        .c7-pagination li.active span {
            background: var(--c7-accent);
            color: #fff;
            border-color: var(--c7-accent);
            font-weight: 600;
        }
        .c7-pagination li.disabled span {
            color: var(--c7-text-muted);
            background: var(--c7-bg);
            cursor: not-allowed;
            border-color: var(--c7-border-light);
        }

        /* ========== CTA SECTION ========== */
        .c7-cta-section {
            background: linear-gradient(135deg, #1e3a5f 0%, #152a45 100%);
            padding: 56px 0;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .c7-cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -80px;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(240, 192, 64, 0.08);
            pointer-events: none;
        }
        .c7-cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(232, 89, 12, 0.1);
            pointer-events: none;
        }
        .c7-cta-section .container-c7 {
            position: relative;
            z-index: 2;
        }
        .c7-cta-section h2 {
            font-family: var(--c7-font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .c7-cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 28px;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }
        .c7-cta-form {
            display: flex;
            gap: 10px;
            max-width: 500px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .c7-cta-form input {
            flex: 1;
            min-width: 240px;
            padding: 13px 18px;
            border-radius: 28px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            font-size: 0.95rem;
            transition: all var(--c7-transition);
            backdrop-filter: blur(4px);
        }
        .c7-cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.55);
        }
        .c7-cta-form input:focus {
            border-color: var(--c7-gold);
            background: rgba(255, 255, 255, 0.16);
            box-shadow: 0 0 0 4px rgba(240, 192, 64, 0.15);
        }
        .c7-btn-cta {
            padding: 13px 28px;
            border-radius: 28px;
            background: var(--c7-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.3px;
            white-space: nowrap;
            transition: all var(--c7-transition);
        }
        .c7-btn-cta:hover {
            background: var(--c7-accent-hover);
            box-shadow: 0 6px 20px rgba(232, 89, 12, 0.4);
            transform: translateY(-2px);
            color: #fff;
        }
        @media (max-width: 520px) {
            .c7-cta-section h2 {
                font-size: 1.4rem;
            }
            .c7-cta-form input {
                min-width: 100%;
            }
            .c7-btn-cta {
                width: 100%;
            }
        }

        /* ========== FAQ ========== */
        .c7-faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .c7-faq-item {
            background: var(--c7-surface);
            border: 1px solid var(--c7-border-light);
            border-radius: var(--c7-radius);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--c7-transition);
            box-shadow: var(--c7-shadow-sm);
        }
        .c7-faq-item:hover {
            border-color: var(--c7-border);
        }
        .c7-faq-question {
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--c7-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            user-select: none;
            transition: background var(--c7-transition);
        }
        .c7-faq-question:hover {
            background: var(--c7-bg);
        }
        .c7-faq-question .c7-faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--c7-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8rem;
            color: var(--c7-accent);
            transition: all var(--c7-transition);
        }
        .c7-faq-item.open .c7-faq-icon {
            transform: rotate(45deg);
            background: var(--c7-accent);
            color: #fff;
        }
        .c7-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            font-size: 0.93rem;
            color: var(--c7-text-secondary);
            line-height: 1.7;
        }
        .c7-faq-item.open .c7-faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }
        @media (max-width: 520px) {
            .c7-faq-question {
                padding: 14px 16px;
                font-size: 0.93rem;
            }
            .c7-faq-answer {
                padding: 0 16px;
                font-size: 0.88rem;
            }
            .c7-faq-item.open .c7-faq-answer {
                padding: 0 16px 14px;
            }
        }

        /* ========== FOOTER ========== */
        .c7-footer {
            background: #141a22;
            color: #c5c9d0;
            padding: 52px 0 24px;
            font-size: 0.9rem;
        }
        .c7-footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .c7-footer-logo {
            font-family: var(--c7-font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .c7-footer-desc {
            color: #9ca3af;
            line-height: 1.7;
            font-size: 0.88rem;
        }
        .c7-footer h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: #e0e3e8;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .c7-footer a {
            display: block;
            color: #9ca3af;
            padding: 4px 0;
            font-size: 0.88rem;
            transition: color var(--c7-transition);
        }
        .c7-footer a:hover {
            color: var(--c7-gold);
        }
        .c7-footer a i {
            margin-right: 6px;
            font-size: 0.8rem;
        }
        .c7-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            text-align: center;
            color: #8a909c;
            font-size: 0.84rem;
        }
        @media (max-width: 768px) {
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 520px) {
            .c7-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        /* ========== UTILITY ========== */
        .c7-btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            border-radius: 24px;
            border: 2px solid var(--c7-accent);
            color: var(--c7-accent);
            font-weight: 600;
            font-size: 0.9rem;
            background: transparent;
            transition: all var(--c7-transition);
            letter-spacing: 0.3px;
        }
        .c7-btn-outline:hover {
            background: var(--c7-accent);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 89, 12, 0.3);
        }
        .c7-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 24px;
            background: var(--c7-accent);
            color: #fff;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--c7-transition);
            letter-spacing: 0.3px;
        }
        .c7-btn-primary:hover {
            background: var(--c7-accent-hover);
            color: #fff;
            box-shadow: 0 4px 16px rgba(232, 89, 12, 0.35);
            transform: translateY(-1px);
        }
        .c7-text-accent {
            color: var(--c7-accent);
        }
        .c7-mb-0 {
            margin-bottom: 0;
        }

/* roulang page: category6 */
:root {
            --c7-primary: #1a1f36;
            --c7-primary-light: #242b45;
            --c7-accent: #f0a830;
            --c7-accent-hover: #d49520;
            --c7-accent-light: #fff3dc;
            --c7-surface: #ffffff;
            --c7-surface-alt: #f7f8fb;
            --c7-text: #1e2233;
            --c7-text-secondary: #5a6072;
            --c7-text-weak: #8b90a1;
            --c7-border: #e4e7ef;
            --c7-border-light: #f0f2f7;
            --c7-radius-sm: 8px;
            --c7-radius: 14px;
            --c7-radius-lg: 20px;
            --c7-radius-xl: 26px;
            --c7-shadow-sm: 0 1px 3px rgba(26, 31, 54, 0.06);
            --c7-shadow: 0 4px 16px rgba(26, 31, 54, 0.08);
            --c7-shadow-md: 0 8px 28px rgba(26, 31, 54, 0.10);
            --c7-shadow-lg: 0 14px 40px rgba(26, 31, 54, 0.13);
            --c7-shadow-xl: 0 20px 56px rgba(26, 31, 54, 0.16);
            --c7-transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
            --c7-container-max: 1200px;
            --c7-header-height: 72px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        body {
            font-family: var(--c7-font-sans);
            margin: 0;
            padding: 0;
            background-color: var(--c7-surface-alt);
            color: var(--c7-text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--c7-transition);
        }

        a:hover {
            color: var(--c7-accent);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        .container-c7 {
            max-width: var(--c7-container-max);
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ========== HEADER ========== */
        .c7-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: var(--c7-surface);
            border-bottom: 1px solid var(--c7-border-light);
            box-shadow: var(--c7-shadow-sm);
            height: var(--c7-header-height);
            display: flex;
            align-items: center;
            transition: box-shadow var(--c7-transition);
        }

        .c7-header.scrolled {
            box-shadow: var(--c7-shadow-md);
        }

        .c7-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            max-width: var(--c7-container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        .c7-logo {
            font-size: 1.45rem;
            font-weight: 700;
            color: var(--c7-primary);
            letter-spacing: 0.02em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .c7-logo-icon {
            width: 38px;
            height: 38px;
            border-radius: var(--c7-radius-sm);
            background: linear-gradient(135deg, var(--c7-accent) 0%, #e89918 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .c7-nav-links {
            display: flex;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
            flex-wrap: wrap;
            align-items: center;
        }

        .c7-nav-links li a {
            display: inline-block;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.92rem;
            font-weight: 500;
            color: var(--c7-text-secondary);
            transition: all var(--c7-transition);
            white-space: nowrap;
            position: relative;
        }

        .c7-nav-links li a:hover {
            color: var(--c7-accent);
            background-color: var(--c7-accent-light);
        }

        .c7-nav-links li a.active {
            color: #fff;
            background-color: var(--c7-accent);
            font-weight: 600;
            box-shadow: 0 2px 10px rgba(240, 168, 48, 0.35);
        }

        .c7-nav-links li a.active:hover {
            background-color: var(--c7-accent-hover);
            color: #fff;
        }

        .c7-mobile-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--c7-text);
            padding: 6px;
            border-radius: var(--c7-radius-sm);
            transition: background var(--c7-transition);
        }

        .c7-mobile-toggle:hover {
            background: var(--c7-surface-alt);
        }

        /* ========== PAGE BANNER ========== */
        .c7-page-banner {
            position: relative;
            background-image: url('assets/images/backpic/back-3.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 70px 0;
            overflow: hidden;
        }

        .c7-page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(26, 31, 54, 0.82) 0%, rgba(26, 31, 54, 0.55) 60%, rgba(240, 168, 48, 0.25) 100%);
            z-index: 1;
        }

        .c7-page-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            color: #fff;
        }

        .c7-page-banner-badge {
            display: inline-block;
            background: rgba(240, 168, 48, 0.9);
            color: #fff;
            font-weight: 600;
            font-size: 0.88rem;
            padding: 6px 18px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.04em;
        }

        .c7-page-banner h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin: 0 0 14px;
            letter-spacing: 0.03em;
            line-height: 1.25;
        }

        .c7-page-banner p {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            max-width: 600px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ========== SECTION TITLES ========== */
        .c7-section-title {
            text-align: center;
            margin-bottom: 40px;
        }

        .c7-section-title h2 {
            font-size: 1.9rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin: 0 0 10px;
            letter-spacing: 0.02em;
        }

        .c7-section-title .c7-section-subtitle {
            font-size: 0.95rem;
            color: var(--c7-text-weak);
            max-width: 500px;
            margin: 0 auto;
        }

        .c7-section-divider {
            width: 50px;
            height: 3px;
            background: var(--c7-accent);
            border-radius: 6px;
            margin: 12px auto 0;
        }

        /* ========== CARDS ========== */
        .c7-card {
            background: var(--c7-surface);
            border-radius: var(--c7-radius-lg);
            box-shadow: var(--c7-shadow);
            overflow: hidden;
            transition: all var(--c7-transition);
            border: 1px solid transparent;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .c7-card:hover {
            box-shadow: var(--c7-shadow-lg);
            transform: translateY(-3px);
            border-color: var(--c7-border);
        }

        .c7-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--c7-surface-alt);
        }

        .c7-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .c7-card:hover .c7-card-img-wrap img {
            transform: scale(1.06);
        }

        .c7-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--c7-accent);
            color: #fff;
            font-size: 0.78rem;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 14px;
            z-index: 2;
            letter-spacing: 0.03em;
        }

        .c7-card-badge-hot {
            background: #e74c3c;
        }

        .c7-card-badge-new {
            background: #2ecc71;
        }

        .c7-card-badge-limited {
            background: #8e44ad;
        }

        .c7-card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .c7-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin: 0 0 8px;
            color: var(--c7-primary);
            line-height: 1.4;
        }

        .c7-card-body p {
            font-size: 0.9rem;
            color: var(--c7-text-secondary);
            margin: 0 0 14px;
            line-height: 1.6;
            flex: 1;
        }

        .c7-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 0.82rem;
            color: var(--c7-text-weak);
            margin-bottom: 14px;
        }

        .c7-card-meta span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .c7-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 7px;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.92rem;
            letter-spacing: 0.02em;
            transition: all var(--c7-transition);
            border: none;
            cursor: pointer;
            text-align: center;
            white-space: nowrap;
        }

        .c7-btn-primary {
            background: var(--c7-accent);
            color: #fff;
            box-shadow: 0 4px 14px rgba(240, 168, 48, 0.3);
        }

        .c7-btn-primary:hover {
            background: var(--c7-accent-hover);
            box-shadow: 0 6px 20px rgba(240, 168, 48, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        .c7-btn-outline {
            background: transparent;
            color: var(--c7-accent);
            border: 2px solid var(--c7-accent);
        }

        .c7-btn-outline:hover {
            background: var(--c7-accent);
            color: #fff;
            border-color: var(--c7-accent);
        }

        .c7-btn-sm {
            padding: 6px 16px;
            font-size: 0.82rem;
            border-radius: 18px;
        }

        .c7-btn-lg {
            padding: 13px 30px;
            font-size: 1rem;
            border-radius: 28px;
        }

        /* ========== HIGHLIGHT BANNER ========== */
        .c7-highlight-banner {
            background: linear-gradient(135deg, var(--c7-primary) 0%, var(--c7-primary-light) 60%, #2a3050 100%);
            border-radius: var(--c7-radius-xl);
            padding: 36px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
            margin-top: 20px;
        }

        .c7-highlight-banner::after {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 160px;
            height: 160px;
            border-radius: 50%;
            background: rgba(240, 168, 48, 0.18);
            pointer-events: none;
        }

        .c7-highlight-banner-inner {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 30px;
            flex-wrap: wrap;
        }

        .c7-highlight-banner-icon {
            font-size: 3rem;
            color: var(--c7-accent);
            flex-shrink: 0;
        }

        .c7-highlight-banner-text h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin: 0 0 6px;
        }

        .c7-highlight-banner-text p {
            font-size: 0.95rem;
            color: rgba(255, 255, 255, 0.8);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== TIMELINE ========== */
        .c7-timeline {
            position: relative;
            padding-left: 30px;
            border-left: 2px dashed var(--c7-border);
        }

        .c7-timeline-item {
            position: relative;
            margin-bottom: 28px;
            padding-left: 20px;
        }

        .c7-timeline-item::before {
            content: '';
            position: absolute;
            left: -37px;
            top: 6px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--c7-accent);
            border: 3px solid #fff;
            box-shadow: var(--c7-shadow-sm);
            z-index: 1;
        }

        .c7-timeline-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--c7-primary);
            margin: 0 0 4px;
        }

        .c7-timeline-item .c7-timeline-date {
            font-size: 0.8rem;
            color: var(--c7-accent);
            font-weight: 600;
            margin-bottom: 4px;
        }

        .c7-timeline-item p {
            font-size: 0.88rem;
            color: var(--c7-text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* ========== STATS ROW ========== */
        .c7-stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .c7-stat-card {
            background: var(--c7-surface);
            border-radius: var(--c7-radius-lg);
            padding: 28px 22px;
            text-align: center;
            box-shadow: var(--c7-shadow);
            transition: all var(--c7-transition);
            border: 1px solid transparent;
        }

        .c7-stat-card:hover {
            box-shadow: var(--c7-shadow-md);
            transform: translateY(-3px);
            border-color: var(--c7-border);
        }

        .c7-stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--c7-accent);
            letter-spacing: 0.03em;
            margin-bottom: 4px;
            line-height: 1;
        }

        .c7-stat-label {
            font-size: 0.88rem;
            color: var(--c7-text-weak);
            font-weight: 500;
        }

        /* ========== FAQ ========== */
        .c7-faq-item {
            background: var(--c7-surface);
            border-radius: var(--c7-radius);
            margin-bottom: 12px;
            box-shadow: var(--c7-shadow-sm);
            border: 1px solid var(--c7-border-light);
            overflow: hidden;
            transition: all var(--c7-transition);
        }

        .c7-faq-item:hover {
            box-shadow: var(--c7-shadow);
        }

        .c7-faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 22px;
            text-align: left;
            font-size: 1rem;
            font-weight: 600;
            color: var(--c7-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: color var(--c7-transition);
            gap: 14px;
        }

        .c7-faq-question:hover {
            color: var(--c7-accent);
        }

        .c7-faq-icon {
            font-size: 0.85rem;
            color: var(--c7-accent);
            transition: transform var(--c7-transition);
            flex-shrink: 0;
        }

        .c7-faq-item.open .c7-faq-icon {
            transform: rotate(45deg);
        }

        .c7-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .c7-faq-item.open .c7-faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        .c7-faq-answer p {
            font-size: 0.9rem;
            color: var(--c7-text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* ========== CTA ========== */
        .c7-cta-section {
            background: linear-gradient(135deg, var(--c7-primary) 0%, #1e2545 100%);
            border-radius: var(--c7-radius-xl);
            padding: 50px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .c7-cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            left: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(240, 168, 48, 0.12);
            pointer-events: none;
        }

        .c7-cta-section::after {
            content: '';
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(240, 168, 48, 0.1);
            pointer-events: none;
        }

        .c7-cta-section>* {
            position: relative;
            z-index: 1;
        }

        .c7-cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 12px;
        }

        .c7-cta-section p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.85);
            margin: 0 auto 24px;
            max-width: 550px;
            line-height: 1.6;
        }

        /* ========== FOOTER ========== */
        .c7-footer {
            background: var(--c7-primary);
            color: #c5c9d6;
            padding: 50px 0 24px;
            margin-top: 60px;
        }

        .c7-footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1.2fr;
            gap: 30px;
            margin-bottom: 32px;
        }

        .c7-footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .c7-footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: #a8adbb;
            margin: 0;
        }

        .c7-footer-grid h4 {
            font-size: 1rem;
            font-weight: 600;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 0.02em;
        }

        .c7-footer-grid a {
            display: block;
            font-size: 0.88rem;
            color: #b0b6c4;
            padding: 4px 0;
            transition: color var(--c7-transition);
        }

        .c7-footer-grid a:hover {
            color: var(--c7-accent);
        }

        .c7-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
            text-align: center;
            font-size: 0.82rem;
            color: #8b90a1;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .c7-stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .c7-page-banner h1 {
                font-size: 2.1rem;
            }
        }

        @media (max-width: 768px) {
            .c7-nav-links {
                display: none;
                position: absolute;
                top: var(--c7-header-height);
                left: 0;
                right: 0;
                background: var(--c7-surface);
                flex-direction: column;
                padding: 12px 16px;
                box-shadow: var(--c7-shadow-lg);
                border-bottom: 2px solid var(--c7-border);
                gap: 2px;
                z-index: 1049;
            }
            .c7-nav-links.show {
                display: flex;
            }
            .c7-nav-links li a {
                display: block;
                border-radius: var(--c7-radius-sm);
                padding: 10px 16px;
                font-size: 0.95rem;
            }
            .c7-mobile-toggle {
                display: block;
            }
            .c7-page-banner {
                padding: 44px 0;
            }
            .c7-page-banner h1 {
                font-size: 1.7rem;
            }
            .c7-page-banner p {
                font-size: 0.95rem;
            }
            .c7-stats-row {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .c7-stat-number {
                font-size: 1.6rem;
            }
            .c7-highlight-banner {
                padding: 24px 20px;
            }
            .c7-highlight-banner-inner {
                gap: 16px;
            }
            .c7-cta-section {
                padding: 32px 20px;
            }
            .c7-cta-section h2 {
                font-size: 1.4rem;
            }
            .c7-footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .c7-section-title h2 {
                font-size: 1.5rem;
            }
            .c7-card-body {
                padding: 16px;
            }
            .c7-card-body h3 {
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .c7-stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .c7-stat-card {
                padding: 18px 12px;
            }
            .c7-stat-number {
                font-size: 1.35rem;
            }
            .c7-stat-label {
                font-size: 0.78rem;
            }
            .c7-page-banner h1 {
                font-size: 1.4rem;
            }
            .c7-page-banner {
                padding: 30px 0;
            }
            .c7-timeline {
                padding-left: 20px;
            }
            .c7-timeline-item {
                padding-left: 12px;
            }
            .c7-timeline-item::before {
                left: -26px;
                width: 10px;
                height: 10px;
            }
            .c7-btn-lg {
                padding: 10px 22px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category5 */
/* ============ 设计变量体系 ============ */
        :root {
            --c7-primary: #6c3ce0;
            --c7-primary-dark: #5529b5;
            --c7-primary-light: #8b5cf6;
            --c7-accent: #f59e0b;
            --c7-accent-hover: #e08f00;
            --c7-dark: #0f0f1a;
            --c7-dark-secondary: #1a1a2e;
            --c7-text: #1e1e2e;
            --c7-text-secondary: #4a4a5e;
            --c7-muted: #6b7280;
            --c7-bg: #f8f9fc;
            --c7-bg-alt: #f0f2f8;
            --c7-card: #ffffff;
            --c7-border: #e5e7eb;
            --c7-border-light: #f0f0f5;
            --c7-radius-sm: 8px;
            --c7-radius: 14px;
            --c7-radius-lg: 20px;
            --c7-radius-xl: 24px;
            --c7-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.06);
            --c7-shadow: 0 4px 16px rgba(0, 0, 0, 0.06), 0 2px 6px rgba(0, 0, 0, 0.04);
            --c7-shadow-md: 0 8px 28px rgba(0, 0, 0, 0.08), 0 4px 10px rgba(0, 0, 0, 0.05);
            --c7-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.10), 0 6px 16px rgba(0, 0, 0, 0.06);
            --c7-shadow-xl: 0 24px 64px rgba(0, 0, 0, 0.14), 0 8px 24px rgba(0, 0, 0, 0.08);
            --c7-transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
            --c7-section-gap: 80px;
            --c7-section-gap-sm: 48px;
            --c7-container-max: 1200px;
            --c7-nav-height: 72px;
            --c7-font-sans: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', system-ui, -apple-system, sans-serif;
        }

        /* ============ 基础 Reset & Base ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--c7-font-sans);
            font-size: 1rem;
            line-height: 1.7;
            color: var(--c7-text);
            background-color: var(--c7-bg);
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            min-height: 100vh;
        }

        a {
            color: var(--c7-primary);
            text-decoration: none;
            transition: color var(--c7-transition-fast);
        }
        a:hover {
            color: var(--c7-primary-dark);
            text-decoration: none;
        }
        a:focus-visible {
            outline: 2px solid var(--c7-primary-light);
            outline-offset: 3px;
            border-radius: 4px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
            font-size: inherit;
        }
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--c7-primary-light);
            outline-offset: 2px;
        }

        /* ============ 容器 ============ */
        .container-c7 {
            max-width: var(--c7-container-max);
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
            width: 100%;
        }

        /* ============ Header & Navigation ============ */
        .c7-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, 0.94);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--c7-border-light);
            box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
            transition: box-shadow var(--c7-transition);
        }
        .c7-header.scrolled {
            box-shadow: var(--c7-shadow-md);
        }
        .c7-header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--c7-nav-height);
            gap: 24px;
        }
        .c7-logo-link {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
            color: var(--c7-dark) !important;
            text-decoration: none !important;
            font-weight: 700;
            font-size: 1.35rem;
            letter-spacing: -0.3px;
            transition: opacity var(--c7-transition-fast);
        }
        .c7-logo-link:hover {
            opacity: 0.85;
            color: var(--c7-dark) !important;
        }
        .c7-logo-icon {
            width: 42px;
            height: 42px;
            background: linear-gradient(135deg, var(--c7-primary) 0%, var(--c7-primary-light) 100%);
            border-radius: var(--c7-radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            flex-shrink: 0;
            box-shadow: 0 2px 8px rgba(108, 60, 224, 0.3);
        }
        .c7-logo-text {
            white-space: nowrap;
        }
        .c7-nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .c7-nav-links li a {
            display: inline-flex;
            align-items: center;
            padding: 10px 16px;
            border-radius: 10px;
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--c7-text-secondary);
            text-decoration: none !important;
            transition: all var(--c7-transition-fast);
            white-space: nowrap;
            position: relative;
        }
        .c7-nav-links li a:hover {
            color: var(--c7-primary);
            background: rgba(108, 60, 224, 0.06);
        }
        .c7-nav-links li a.active {
            color: var(--c7-primary);
            background: rgba(108, 60, 224, 0.1);
            font-weight: 600;
        }
        .c7-nav-links li a.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 3px;
            background: var(--c7-primary);
            border-radius: 3px;
        }
        .c7-nav-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .c7-btn-nav {
            padding: 10px 20px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 0.9rem;
            border: none;
            cursor: pointer;
            transition: all var(--c7-transition-fast);
            white-space: nowrap;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .c7-btn-nav-primary {
            background: var(--c7-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(108, 60, 224, 0.3);
        }
        .c7-btn-nav-primary:hover {
            background: var(--c7-primary-dark);
            color: #fff;
            box-shadow: 0 4px 16px rgba(108, 60, 224, 0.4);
            transform: translateY(-1px);
        }
        .c7-nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.5rem;
            color: var(--c7-text);
            cursor: pointer;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--c7-transition-fast);
        }
        .c7-nav-toggle:hover {
            background: var(--c7-bg-alt);
        }

        /* 移动端导航 */
        .c7-mobile-menu {
            display: none;
            position: fixed;
            top: var(--c7-nav-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: #fff;
            z-index: 1040;
            padding: 20px;
            overflow-y: auto;
            flex-direction: column;
            gap: 6px;
        }
        .c7-mobile-menu.open {
            display: flex;
        }
        .c7-mobile-menu a {
            display: block;
            padding: 14px 18px;
            border-radius: 12px;
            font-weight: 500;
            font-size: 1.05rem;
            color: var(--c7-text-secondary);
            text-decoration: none !important;
            transition: all var(--c7-transition-fast);
        }
        .c7-mobile-menu a:hover,
        .c7-mobile-menu a.active {
            color: var(--c7-primary);
            background: rgba(108, 60, 224, 0.08);
            font-weight: 600;
        }

        /* ============ 页面Banner ============ */
        .c7-page-banner {
            position: relative;
            padding: 80px 0;
            background: linear-gradient(135deg, var(--c7-dark-secondary) 0%, #1a1040 40%, #1a1a2e 100%);
            background-image: url('assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            background-blend-mode: overlay;
            color: #fff;
            text-align: center;
            overflow: hidden;
        }
        .c7-page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(108, 60, 224, 0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 50%, rgba(245, 158, 11, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }
        .c7-page-banner .container-c7 {
            position: relative;
            z-index: 2;
        }
        .c7-banner-subtitle {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(6px);
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            color: rgba(255, 255, 255, 0.9);
        }
        .c7-page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin-bottom: 14px;
            line-height: 1.25;
        }
        .c7-page-banner .c7-banner-desc {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.78);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }

        /* ============ 板块通用 ============ */
        .c7-section {
            padding: var(--c7-section-gap) 0;
        }
        .c7-section-sm {
            padding: var(--c7-section-gap-sm) 0;
        }
        .c7-section-alt {
            background: var(--c7-bg-alt);
        }
        .c7-section-dark {
            background: var(--c7-dark-secondary);
            color: #fff;
        }
        .c7-section-header {
            text-align: center;
            margin-bottom: 48px;
        }
        .c7-section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.4px;
            margin-bottom: 10px;
            color: inherit;
        }
        .c7-section-header p {
            font-size: 1.05rem;
            color: var(--c7-muted);
            max-width: 560px;
            margin: 0 auto;
        }
        .c7-section-dark .c7-section-header p {
            color: rgba(255, 255, 255, 0.65);
        }

        /* ============ 卡片组件 ============ */
        .c7-card {
            background: var(--c7-card);
            border-radius: var(--c7-radius);
            box-shadow: var(--c7-shadow);
            overflow: hidden;
            transition: all var(--c7-transition);
            border: 1px solid var(--c7-border-light);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .c7-card:hover {
            box-shadow: var(--c7-shadow-lg);
            transform: translateY(-4px);
            border-color: transparent;
        }
        .c7-card-img-wrap {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 10;
            background: var(--c7-bg-alt);
        }
        .c7-card-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .c7-card:hover .c7-card-img-wrap img {
            transform: scale(1.06);
        }
        .c7-card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--c7-accent);
            color: #1a1a1a;
            font-weight: 700;
            font-size: 0.78rem;
            padding: 5px 12px;
            border-radius: 16px;
            z-index: 2;
            letter-spacing: 0.3px;
        }
        .c7-card-body {
            padding: 20px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .c7-card-body h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: var(--c7-text);
        }
        .c7-card-body p {
            font-size: 0.92rem;
            color: var(--c7-muted);
            margin-bottom: 14px;
            flex: 1;
            line-height: 1.6;
        }
        .c7-card-meta {
            font-size: 0.82rem;
            color: var(--c7-muted);
            display: flex;
            gap: 14px;
            align-items: center;
            flex-wrap: wrap;
        }
        .c7-card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .c7-card-link {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--c7-primary);
            display: inline-flex;
            align-items: center;
            gap: 5px;
            transition: gap var(--c7-transition-fast);
            margin-top: auto;
        }
        .c7-card-link:hover {
            gap: 9px;
            color: var(--c7-primary-dark);
        }

        /* ============ 按钮体系 ============ */
        .c7-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 12px;
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: all var(--c7-transition);
            border: none;
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .c7-btn-primary {
            background: var(--c7-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 60, 224, 0.35);
        }
        .c7-btn-primary:hover {
            background: var(--c7-primary-dark);
            color: #fff;
            box-shadow: 0 6px 22px rgba(108, 60, 224, 0.45);
            transform: translateY(-2px);
        }
        .c7-btn-outline {
            background: transparent;
            color: var(--c7-primary);
            border: 2px solid var(--c7-primary);
        }
        .c7-btn-outline:hover {
            background: var(--c7-primary);
            color: #fff;
            transform: translateY(-2px);
        }
        .c7-btn-accent {
            background: var(--c7-accent);
            color: #1a1a1a;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
        }
        .c7-btn-accent:hover {
            background: var(--c7-accent-hover);
            color: #1a1a1a;
            box-shadow: 0 6px 22px rgba(245, 158, 11, 0.45);
            transform: translateY(-2px);
        }
        .c7-btn-lg {
            padding: 16px 36px;
            font-size: 1.05rem;
            border-radius: 14px;
        }
        .c7-btn-sm {
            padding: 9px 18px;
            font-size: 0.85rem;
            border-radius: 8px;
        }
        .c7-btn:focus-visible {
            outline: 3px solid var(--c7-primary-light);
            outline-offset: 3px;
        }

        /* ============ 标签/徽章 ============ */
        .c7-tag {
            display: inline-flex;
            align-items: center;
            padding: 5px 14px;
            border-radius: 16px;
            font-size: 0.82rem;
            font-weight: 500;
            letter-spacing: 0.2px;
            transition: all var(--c7-transition-fast);
        }
        .c7-tag-primary {
            background: rgba(108, 60, 224, 0.1);
            color: var(--c7-primary);
        }
        .c7-tag-accent {
            background: rgba(245, 158, 11, 0.12);
            color: #b87300;
        }
        .c7-tag-outline {
            border: 1px solid var(--c7-border);
            color: var(--c7-text-secondary);
            background: transparent;
        }
        .c7-tag:hover {
            transform: translateY(-1px);
            box-shadow: var(--c7-shadow-sm);
        }

        /* ============ 社区达人卡片 ============ */
        .c7-user-card {
            background: var(--c7-card);
            border-radius: var(--c7-radius);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--c7-shadow);
            border: 1px solid var(--c7-border-light);
            transition: all var(--c7-transition);
            height: 100%;
        }
        .c7-user-card:hover {
            box-shadow: var(--c7-shadow-md);
            transform: translateY(-3px);
        }
        .c7-user-avatar {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--c7-primary-light), var(--c7-primary));
            margin: 0 auto 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            color: #fff;
            font-weight: 700;
            box-shadow: 0 4px 14px rgba(108, 60, 224, 0.3);
        }
        .c7-user-card h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 4px;
            color: var(--c7-text);
        }
        .c7-user-card .c7-user-role {
            font-size: 0.85rem;
            color: var(--c7-primary);
            font-weight: 600;
            margin-bottom: 8px;
        }
        .c7-user-card .c7-user-stats {
            font-size: 0.8rem;
            color: var(--c7-muted);
            display: flex;
            justify-content: center;
            gap: 16px;
        }

        /* ============ 规则列表 ============ */
        .c7-rule-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .c7-rule-list li {
            padding: 16px 20px;
            border-radius: var(--c7-radius-sm);
            margin-bottom: 10px;
            background: var(--c7-card);
            border: 1px solid var(--c7-border-light);
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--c7-transition-fast);
        }
        .c7-rule-list li:hover {
            box-shadow: var(--c7-shadow);
            border-color: transparent;
        }
        .c7-rule-icon {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            background: rgba(108, 60, 224, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--c7-primary);
            font-size: 1.1rem;
        }
        .c7-rule-list li h5 {
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 3px;
            color: var(--c7-text);
        }
        .c7-rule-list li p {
            font-size: 0.85rem;
            color: var(--c7-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* ============ FAQ ============ */
        .c7-faq-item {
            background: var(--c7-card);
            border-radius: var(--c7-radius);
            border: 1px solid var(--c7-border-light);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--c7-transition-fast);
        }
        .c7-faq-item:hover {
            box-shadow: var(--c7-shadow);
        }
        .c7-faq-question {
            width: 100%;
            background: none;
            border: none;
            text-align: left;
            padding: 18px 22px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--c7-text);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            transition: color var(--c7-transition-fast);
            letter-spacing: 0.1px;
        }
        .c7-faq-question:hover {
            color: var(--c7-primary);
        }
        .c7-faq-arrow {
            flex-shrink: 0;
            transition: transform var(--c7-transition);
            color: var(--c7-muted);
            font-size: 0.85rem;
        }
        .c7-faq-item.open .c7-faq-arrow {
            transform: rotate(180deg);
            color: var(--c7-primary);
        }
        .c7-faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 22px;
            color: var(--c7-text-secondary);
            font-size: 0.92rem;
            line-height: 1.7;
        }
        .c7-faq-item.open .c7-faq-answer {
            max-height: 400px;
            padding: 0 22px 18px;
        }

        /* ============ CTA板块 ============ */
        .c7-cta-section {
            background: linear-gradient(135deg, var(--c7-primary) 0%, #5529b5 50%, #3d1a8e 100%);
            color: #fff;
            text-align: center;
            padding: 64px 0;
            border-radius: var(--c7-radius-xl);
            margin: var(--c7-section-gap) 0;
            position: relative;
            overflow: hidden;
        }
        .c7-cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 80%, rgba(245, 158, 11, 0.2) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
            pointer-events: none;
        }
        .c7-cta-section .container-c7 {
            position: relative;
            z-index: 2;
        }
        .c7-cta-section h2 {
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .c7-cta-section p {
            font-size: 1.05rem;
            opacity: 0.85;
            max-width: 500px;
            margin: 0 auto 24px;
        }

        /* ============ Footer ============ */
        .c7-footer {
            background: var(--c7-dark);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
            font-size: 0.9rem;
        }
        .c7-footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .c7-footer-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }
        .c7-footer-desc {
            font-size: 0.88rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            margin: 0;
        }
        .c7-footer h4 {
            color: #fff;
            font-weight: 700;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.2px;
        }
        .c7-footer a {
            display: block;
            color: rgba(255, 255, 255, 0.6);
            text-decoration: none;
            padding: 5px 0;
            transition: color var(--c7-transition-fast);
            font-size: 0.88rem;
        }
        .c7-footer a:hover {
            color: #fff;
        }
        .c7-footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 0.82rem;
            color: rgba(255, 255, 255, 0.4);
        }
        .c7-footer-bottom p {
            margin: 0;
        }

        /* ============ 响应式断点 ============ */
        @media (max-width: 1024px) {
            :root {
                --c7-section-gap: 56px;
                --c7-section-gap-sm: 36px;
            }
            .c7-page-banner h1 {
                font-size: 2.2rem;
            }
            .c7-footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .c7-nav-links li a {
                padding: 8px 11px;
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            :root {
                --c7-nav-height: 62px;
                --c7-section-gap: 44px;
                --c7-section-gap-sm: 28px;
            }
            .c7-nav-links {
                display: none;
            }
            .c7-nav-actions .c7-btn-nav {
                display: none;
            }
            .c7-nav-toggle {
                display: block;
            }
            .c7-page-banner {
                padding: 52px 0;
            }
            .c7-page-banner h1 {
                font-size: 1.7rem;
            }
            .c7-page-banner .c7-banner-desc {
                font-size: 0.95rem;
            }
            .c7-section-header h2 {
                font-size: 1.5rem;
            }
            .c7-footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .c7-cta-section {
                border-radius: var(--c7-radius-lg);
                padding: 44px 20px;
                margin: 40px 0;
            }
            .c7-cta-section h2 {
                font-size: 1.5rem;
            }
            .c7-card-body {
                padding: 16px;
            }
        }

        @media (max-width: 520px) {
            .c7-page-banner h1 {
                font-size: 1.4rem;
            }
            .c7-section-header h2 {
                font-size: 1.3rem;
            }
            .c7-btn {
                padding: 11px 20px;
                font-size: 0.88rem;
            }
            .c7-btn-lg {
                padding: 13px 26px;
                font-size: 0.95rem;
            }
            .c7-user-card {
                padding: 18px 14px;
            }
            .c7-rule-list li {
                flex-direction: column;
                gap: 8px;
            }
        }