/* roulang page: index */
/* ============ 设计变量 ============ */
        :root {
            --primary: #4f46e5;
            --primary-dark: #3730a3;
            --primary-light: #818cf8;
            --accent: #f59e0b;
            --accent-light: #fbbf24;
            --dark: #0b1021;
            --dark-2: #111a34;
            --dark-3: #1c2750;
            --light: #f4f6fb;
            --white: #ffffff;
            --text: #1e293b;
            --text-weak: #6b7a99;
            --border: #e2e8f0;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 12px rgba(15, 23, 42, .06);
            --shadow-md: 0 8px 30px rgba(15, 23, 42, .09);
            --shadow-lg: 0 24px 60px rgba(79, 70, 229, .18);
            --shadow-gold: 0 10px 36px rgba(245, 158, 11, .22);
            --transition: all .3s cubic-bezier(.4, 0, .2, 1);
        }

        /* ============ 基础 Reset ============ */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--light);
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input {
            font-family: inherit;
            border: none;
            outline: none;
        }
        ul,
        ol {
            list-style: none;
        }
        h1,
        h2,
        h3,
        h4,
        h5 {
            line-height: 1.3;
            font-weight: 700;
            color: var(--dark);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ============ 导航区 ============ */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
            box-shadow: 0 2px 20px rgba(15, 23, 42, .06);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            border-radius: 12px;
            color: #fff;
            font-size: 19px;
            box-shadow: 0 6px 16px rgba(79, 70, 229, .3);
        }
        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--dark);
            letter-spacing: .5px;
            white-space: nowrap;
        }
        .brand-name span {
            color: var(--primary);
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            margin: 0 auto;
        }
        .nav-link {
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-weak);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(79, 70, 229, .07);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(79, 70, 229, .1);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 18px;
            height: 3px;
            border-radius: 4px;
            background: var(--primary);
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }
        .search-box {
            display: flex;
            align-items: center;
            background: var(--light);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 4px 6px 4px 18px;
            transition: var(--transition);
        }
        .search-box:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(79, 70, 229, .12);
        }
        .search-box input {
            border: none;
            background: transparent;
            font-size: 14px;
            width: 150px;
            color: var(--text);
        }
        .search-box input::placeholder {
            color: var(--text-weak);
        }
        .search-box button {
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
        }
        .search-box button:hover {
            background: var(--primary-dark);
            transform: scale(1.05);
        }
        .btn-login {
            padding: 9px 22px;
            border-radius: 999px;
            background: transparent;
            border: 2px solid var(--primary);
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .btn-login:hover {
            background: rgba(79, 70, 229, .08);
            transform: translateY(-2px);
        }
        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: var(--light);
            color: var(--dark);
            font-size: 18px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            border: 1px solid var(--border);
        }

        /* 移动端抽屉菜单 */
        .mobile-drawer {
            position: fixed;
            top: 0;
            right: -300px;
            width: 300px;
            height: 100vh;
            background: var(--white);
            z-index: 1200;
            box-shadow: -8px 0 40px rgba(15, 23, 42, .18);
            transition: right .35s cubic-bezier(.4, 0, .2, 1);
            padding: 80px 24px 32px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .drawer-overlay {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, .5);
            backdrop-filter: blur(4px);
            z-index: 1100;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }
        .drawer-overlay.open {
            opacity: 1;
            visibility: visible;
        }
        .drawer-close {
            position: absolute;
            top: 18px;
            right: 18px;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--light);
            color: var(--dark);
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            border: none;
        }
        .mobile-drawer .drawer-nav {
            display: flex;
            flex-direction: column;
            gap: 6px;
            margin-top: 20px;
        }
        .mobile-drawer .drawer-nav a {
            padding: 14px 20px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: var(--light);
            display: flex;
            align-items: center;
            gap: 12px;
            transition: var(--transition);
        }
        .mobile-drawer .drawer-nav a:hover,
        .mobile-drawer .drawer-nav a.active {
            background: rgba(79, 70, 229, .1);
            color: var(--primary);
        }
        .mobile-drawer .drawer-nav a i {
            width: 20px;
            text-align: center;
            color: var(--primary);
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            padding: 160px 0 120px;
            background: var(--dark);
            overflow: hidden;
            background-image: url('/assets/images/backpic/back-1.png');
            background-size: cover;
            background-position: center;
            isolation: isolate;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(11, 16, 33, .94), rgba(17, 26, 52, .82));
            z-index: -1;
        }
        .hero::after {
            content: '';
            position: absolute;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(79, 70, 229, .3), transparent 70%);
            top: -100px;
            right: -100px;
            z-index: -1;
            pointer-events: none;
        }
        .hero-content {
            max-width: 780px;
            position: relative;
            z-index: 2;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(8px);
            padding: 7px 18px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            color: var(--accent-light);
            letter-spacing: .5px;
            margin-bottom: 24px;
            animation: fadeInDown .8s ease-out;
        }
        .hero-tag i {
            color: var(--accent);
        }
        .hero h1 {
            font-size: clamp(40px, 6vw, 68px);
            font-weight: 900;
            color: #fff;
            line-height: 1.12;
            letter-spacing: -1px;
            margin-bottom: 18px;
            animation: fadeInDown .8s ease-out .1s both;
        }
        .hero h1 span {
            background: linear-gradient(90deg, var(--accent-light), var(--accent), #ffb700);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, .8);
            max-width: 560px;
            margin-bottom: 40px;
            line-height: 1.8;
            animation: fadeInDown .8s ease-out .2s both;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            animation: fadeInDown .8s ease-out .3s both;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            border-radius: 999px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            font-weight: 700;
            font-size: 15px;
            box-shadow: var(--shadow-lg);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 48px rgba(79, 70, 229, .35);
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 30px;
            border-radius: 999px;
            background: rgba(255, 255, 255, .08);
            border: 1.5px solid rgba(255, 255, 255, .35);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            backdrop-filter: blur(8px);
            cursor: pointer;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .16);
            border-color: #fff;
            transform: translateY(-3px);
        }
        .countdown-box {
            margin-top: 46px;
            padding: 24px 30px;
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(12px);
            display: inline-flex;
            align-items: center;
            gap: 24px;
            animation: fadeInDown .8s ease-out .4s both;
        }
        .countdown-label {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            font-weight: 600;
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .countdown-label small {
            font-size: 12px;
            color: rgba(255, 255, 255, .4);
        }
        .countdown-items {
            display: flex;
            gap: 10px;
        }
        .countdown-item {
            text-align: center;
            min-width: 64px;
        }
        .countdown-num {
            font-size: 34px;
            font-weight: 900;
            color: #fff;
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
            background: rgba(255, 255, 255, .12);
            border-radius: var(--radius-md);
            padding: 6px 10px;
            min-width: 58px;
            display: inline-block;
        }
        .countdown-unit {
            font-size: 12px;
            color: rgba(255, 255, 255, .55);
            margin-top: 4px;
            font-weight: 600;
        }
        @keyframes fadeInDown {
            from {
                opacity: 0;
                transform: translateY(24px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ============ 统计 ============ */
        .stats-section {
            position: relative;
            padding: 70px 0;
            background: var(--white);
            border-bottom: 1px solid var(--border);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 36px 20px;
            background: var(--light);
            border-radius: var(--radius-lg);
            border: 1px solid transparent;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }
        .stat-card:hover {
            border-color: var(--border);
            box-shadow: var(--shadow-md);
            transform: translateY(-6px);
        }
        .stat-card:hover::before {
            opacity: 1;
        }
        .stat-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            font-size: 22px;
            color: var(--primary);
            background: rgba(79, 70, 229, .1);
        }
        .stat-num {
            font-size: 38px;
            font-weight: 900;
            color: var(--dark);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }
        .stat-num span {
            font-size: 20px;
            color: var(--primary);
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-weak);
            margin-top: 6px;
            font-weight: 500;
        }

        /* ============ 分类板块 ============ */
        .categories-section {
            padding: 90px 0;
            background: var(--light);
        }
        .section-header {
            text-align: center;
            max-width: 640px;
            margin: 0 auto 50px;
        }
        .section-tag {
            display: inline-block;
            padding: 5px 18px;
            border-radius: 999px;
            background: rgba(79, 70, 229, .08);
            color: var(--primary);
            font-size: 13px;
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 14px;
        }
        .section-header h2 {
            font-size: clamp(28px, 4vw, 38px);
            font-weight: 800;
            margin-bottom: 14px;
            color: var(--dark);
        }
        .section-header p {
            color: var(--text-weak);
            font-size: 16px;
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-md);
            border-color: rgba(79, 70, 229, .3);
        }
        .category-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .category-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .category-card:hover .category-cover img {
            transform: scale(1.06);
        }
        .category-cover .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 16, 33, .05), rgba(11, 16, 33, .55));
        }
        .category-icon {
            position: absolute;
            bottom: 16px;
            left: 20px;
            z-index: 2;
        }
        .category-icon i {
            width: 46px;
            height: 46px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, .92);
            border-radius: 14px;
            font-size: 20px;
            color: var(--primary);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .18);
        }
        .category-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-body h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }
        .category-body p {
            font-size: 14.5px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }
        .category-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 700;
            font-size: 14px;
            color: var(--primary);
        }
        .category-link i {
            transition: transform .3s;
        }
        .category-link:hover i {
            transform: translateX(5px);
        }

        /* ============ 特色 ============ */
        .features-section {
            padding: 90px 0;
            background: var(--white);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }
        .feature-item {
            text-align: center;
            padding: 38px 24px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: var(--white);
            transition: var(--transition);
        }
        .feature-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(79, 70, 229, .25);
            transform: translateY(-5px);
        }
        .feature-item .feat-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 18px;
            font-size: 26px;
            background: linear-gradient(135deg, rgba(79, 70, 229, .1), rgba(245, 158, 11, .08));
            color: var(--primary);
        }
        .feature-item h3 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--dark);
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
        }

        /* ============ 最新资讯(CMS) ============ */
        .latest-section {
            padding: 90px 0;
            background: var(--light);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 28px;
            display: flex;
            gap: 20px;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
            border-color: rgba(79, 70, 229, .2);
        }
        .news-thumb {
            width: 96px;
            height: 96px;
            border-radius: var(--radius-md);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--light);
        }
        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-content {
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .news-badge {
            padding: 3px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            background: rgba(79, 70, 229, .09);
            color: var(--primary);
        }
        .news-date {
            font-size: 13px;
            color: var(--text-weak);
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .news-content h3 {
            font-size: 16px;
            font-weight: 700;
            line-height: 1.5;
            margin-bottom: 6px;
        }
        .news-content h3 a {
            color: var(--dark);
        }
        .news-content h3 a:hover {
            color: var(--primary);
        }
        .news-content p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 50px;
            background: var(--white);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            color: var(--text-weak);
        }

        /* ============ 时间线 ============ */
        .timeline-section {
            padding: 90px 0;
            background: var(--dark);
            position: relative;
            overflow: hidden;
        }
        .timeline-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(79, 70, 229, .25), transparent 70%);
            bottom: -100px;
            left: -100px;
            pointer-events: none;
        }
        .timeline-section .section-header h2 {
            color: #fff;
        }
        .timeline-section .section-header p {
            color: rgba(255, 255, 255, .6);
        }
        .timeline-section .section-tag {
            background: rgba(255, 255, 255, .1);
            color: var(--accent-light);
        }
        .timeline {
            position: relative;
            max-width: 900px;
            margin: 0 auto;
            padding-left: 0;
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--primary), var(--accent));
            border-radius: 4px;
        }
        .timeline-item {
            position: relative;
            width: 50%;
            padding: 0 40px 48px;
        }
        .timeline-item:nth-child(odd) {
            left: 0;
            text-align: right;
        }
        .timeline-item:nth-child(even) {
            left: 50%;
            text-align: left;
        }
        .timeline-dot {
            position: absolute;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent);
            border: 3px solid #fff;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, .3);
            z-index: 2;
        }
        .timeline-item:nth-child(odd) .timeline-dot {
            right: -8px;
        }
        .timeline-item:nth-child(even) .timeline-dot {
            left: -6px;
        }
        .timeline-card {
            background: rgba(255, 255, 255, .07);
            border: 1px solid rgba(255, 255, 255, .12);
            border-radius: var(--radius-lg);
            padding: 24px;
            backdrop-filter: blur(8px);
            transition: var(--transition);
        }
        .timeline-card:hover {
            background: rgba(255, 255, 255, .12);
            transform: translateY(-4px);
        }
        .timeline-phase {
            display: inline-block;
            padding: 3px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 700;
            letter-spacing: 1px;
            background: rgba(245, 158, 11, .2);
            color: var(--accent-light);
            margin-bottom: 10px;
        }
        .timeline-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .timeline-card p {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            line-height: 1.7;
        }

        /* ============ FAQ ============ */
        .faq-section {
            padding: 90px 0;
            background: var(--white);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            background: var(--white);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(79, 70, 229, .25);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            padding: 20px 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            cursor: pointer;
            font-weight: 700;
            font-size: 16px;
            color: var(--dark);
            background: var(--white);
            border: none;
            width: 100%;
            text-align: left;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question i {
            color: var(--primary);
            transition: transform .3s;
            font-size: 14px;
        }
        .faq-item.open .faq-question i {
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 26px;
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .4s ease;
        }
        .faq-item.open .faq-answer {
            padding: 0 26px 20px;
            max-height: 300px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.8;
        }

        /* ============ CTA ============ */
        .cta-section {
            padding: 90px 0;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            position: relative;
            overflow: hidden;
            text-align: center;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            top: -100px;
            right: -100px;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(245, 158, 11, .15);
            bottom: -80px;
            left: -80px;
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 640px;
            margin: 0 auto;
        }
        .cta-content h2 {
            font-size: clamp(30px, 4vw, 42px);
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 34px;
            line-height: 1.7;
        }
        .cta-btns {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 34px;
            border-radius: 999px;
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            font-size: 15px;
            box-shadow: 0 8px 30px rgba(0, 0, 0, .2);
            transition: var(--transition);
        }
        .btn-white:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 0, 0, .28);
        }
        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 32px;
            border-radius: 999px;
            background: transparent;
            border: 2px solid rgba(255, 255, 255, .5);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            transition: var(--transition);
        }
        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            transform: translateY(-3px);
        }

        /* ============ 页脚 ============ */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .65);
            padding: 70px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-brand .brand {
            margin-bottom: 18px;
        }
        .footer-brand .brand-name {
            color: #fff;
            font-size: 22px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 280px;
            color: rgba(255, 255, 255, .5);
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 18px;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, .6);
            transition: var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent-light);
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
        }
        .footer-contact li i {
            color: var(--primary-light);
            width: 20px;
            text-align: center;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .1);
            padding-top: 26px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }
        .footer-bottom .footer-domain {
            color: rgba(255, 255, 255, .3);
        }

        /* ============ 响应式 ============ */
        @media (max-width: 1024px) {
            .main-nav {
                display: none;
            }
            .menu-toggle {
                display: inline-flex;
            }
            .search-box input {
                width: 110px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .site-header .header-inner {
                height: 64px;
            }
            .hero {
                padding: 130px 0 80px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .countdown-box {
                padding: 18px 20px;
                gap: 16px;
                flex-wrap: wrap;
            }
            .countdown-item {
                min-width: 50px;
            }
            .countdown-num {
                font-size: 24px;
                min-width: 44px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .timeline::before {
                left: 12px;
                transform: none;
            }
            .timeline-item,
            .timeline-item:nth-child(odd),
            .timeline-item:nth-child(even) {
                width: 100%;
                left: 0;
                padding: 0 0 34px 44px;
                text-align: left;
            }
            .timeline-item:nth-child(odd) .timeline-dot,
            .timeline-item:nth-child(even) .timeline-dot {
                left: 5px;
                right: auto;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .search-box {
                display: none;
            }
            .btn-login {
                padding: 8px 16px;
                font-size: 13px;
            }
            .brand-name {
                font-size: 17px;
            }
            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
                border-radius: 10px;
            }
        }
        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .hero-btns {
                flex-direction: column;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-outline-light {
                justify-content: center;
            }
            .countdown-box {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-btns {
                flex-direction: column;
            }
            .cta-btns .btn-white,
            .cta-btns .btn-ghost-light {
                justify-content: center;
            }
            .news-card {
                flex-direction: column;
                padding: 20px;
            }
            .news-thumb {
                width: 100%;
                height: 140px;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --primary-light: #8B7FF0;
    --primary-soft: #EEECFC;
    --accent: #F5A623;
    --accent-light: #FFD58A;
    --accent-soft: #FFF4E0;
    --bg-light: #F8F7FE;
    --bg-white: #FFFFFF;
    --bg-dark: #151033;
    --bg-dark-2: #1E1745;
    --text-primary: #2D2A3A;
    --text-secondary: #6E6A7E;
    --text-muted: #9A96AD;
    --text-light: #FFFFFF;
    --border: #EAE8F2;
    --border-dark: rgba(255,255,255,0.12);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --radius-pill: 50px;
    --shadow-sm: 0 2px 10px rgba(45, 40, 80, 0.06);
    --shadow-md: 0 8px 30px rgba(45, 40, 80, 0.08);
    --shadow-lg: 0 16px 48px rgba(45, 40, 80, 0.14);
    --shadow-primary: 0 8px 30px rgba(108, 92, 231, 0.35);
    --section-padding: 90px;
    --container-w: 1200px;
    --nav-h: 76px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.25s ease;
}

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

ul,
ol {
    list-style: none;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
}

.container {
    max-width: var(--container-w);
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== Header ==================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    height: var(--nav-h);
}

.header-inner {
    display: flex;
    align-items: center;
    gap: 28px;
    height: var(--nav-h);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 18px;
    box-shadow: var(--shadow-primary);
}

.brand-name {
    font-size: 20px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.5px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    justify-content: center;
}

.nav-link {
    padding: 8px 18px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--primary-soft);
}

.nav-link.active {
    color: var(--primary);
    background: var(--primary-soft);
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.header-search {
    position: relative;
    display: flex;
    align-items: center;
}

.header-search input {
    width: 180px;
    height: 38px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 0 38px 0 16px;
    font-size: 13px;
    background: var(--bg-light);
    transition: border-color 0.25s, width 0.3s;
}

.header-search input:focus {
    border-color: var(--primary);
    width: 220px;
    background: #fff;
}

.header-search button {
    position: absolute;
    right: 4px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s;
}

.header-search button:hover {
    color: var(--primary);
}

.header-login {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    font-size: 14px;
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s;
}

.header-login:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    font-size: 14px;
    padding: 10px 22px;
    border-radius: var(--radius-pill);
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-primary);
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 36px rgba(90, 75, 209, 0.4);
    color: #fff;
}

.mobile-toggle {
    display: none;
    width: 40px;
    height: 40px;
    background: var(--primary-soft);
    border-radius: 10px;
    color: var(--primary);
    font-size: 18px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    line-height: 1.4;
}

.btn-lg {
    padding: 15px 36px;
    font-size: 16px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(90, 75, 209, 0.45);
    color: #fff;
}

.btn-outline {
    background: transparent;
    border: 2px solid rgba(255, 255, 255, 0.5);
    color: #fff;
}

.btn-outline:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.12);
    transform: translateY(-3px);
}

.btn-accent {
    background: linear-gradient(135deg, var(--accent), #E8961E);
    color: #fff;
    box-shadow: 0 8px 28px rgba(245, 166, 35, 0.35);
}

.btn-accent:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 40px rgba(245, 166, 35, 0.45);
    color: #fff;
}

/* ==================== Hero ==================== */
.page-hero {
    position: relative;
    padding: 90px 0 80px;
    background: linear-gradient(135deg, rgba(21, 16, 51, 0.95), rgba(30, 23, 69, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    overflow: hidden;
    text-align: center;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.4), transparent 70%);
}

.page-hero::after {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -60px;
    width: 260px;
    height: 260px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(245, 166, 35, 0.25), transparent 70%);
}

.hero-breadcrumb {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 24px;
    position: relative;
    z-index: 2;
}

.hero-breadcrumb a {
    color: rgba(255, 255, 255, 0.75);
}

.hero-breadcrumb a:hover {
    color: var(--accent-light);
}

.hero-breadcrumb .sep {
    color: rgba(255, 255, 255, 0.35);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(108, 92, 231, 0.2);
    border: 1px solid rgba(108, 92, 231, 0.3);
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-size: 13px;
    font-weight: 600;
    color: var(--accent-light);
    margin-bottom: 28px;
    position: relative;
    z-index: 2;
}

.hero-title {
    position: relative;
    z-index: 2;
    font-size: 48px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    letter-spacing: -1px;
    margin-bottom: 20px;
}

.hero-title span {
    background: linear-gradient(120deg, var(--accent-light), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    position: relative;
    z-index: 2;
    font-size: 17px;
    color: rgba(255, 255, 255, 0.75);
    max-width: 660px;
    margin: 0 auto 38px;
    line-height: 1.8;
}

.hero-cta {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-stats {
    position: relative;
    z-index: 2;
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 60px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius-md);
    padding: 20px 32px;
    backdrop-filter: blur(10px);
    min-width: 140px;
    transition: transform 0.3s, background 0.3s;
}

.stat-item:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.12);
}

.stat-value {
    font-size: 32px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.stat-value em {
    font-style: normal;
    font-size: 18px;
    color: var(--accent-light);
    margin-left: 2px;
}

.stat-label {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 5px;
}

/* ==================== Section common ==================== */
.section {
    padding: var(--section-padding) 0;
}

.section-dark {
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.section-dark::before {
    content: '';
    position: absolute;
    top: -120px;
    left: 10%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(108, 92, 231, 0.2), transparent 70%);
}

.section-head {
    text-align: center;
    max-width: 680px;
    margin: 0 auto 56px;
}

.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-soft);
    padding: 6px 18px;
    border-radius: var(--radius-pill);
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    line-height: 1.3;
    letter-spacing: -0.5px;
    margin-bottom: 14px;
}

.section-subtitle {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.section-dark .section-title {
    color: #fff;
}

.section-dark .section-subtitle {
    color: rgba(255, 255, 255, 0.65);
}

.section-dark .section-tag {
    background: rgba(108, 92, 231, 0.2);
    color: var(--accent-light);
}

/* ==================== Steps ==================== */
.steps-section {
    background: var(--bg-white);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    position: relative;
}

.steps-grid::before {
    content: '';
    position: absolute;
    top: 56px;
    left: 12%;
    right: 12%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-soft), var(--primary-light), var(--primary-soft));
    opacity: 0.4;
    z-index: 0;
}

.step-card {
    position: relative;
    z-index: 1;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all 0.35s;
    box-shadow: var(--shadow-sm);
}

.step-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.step-num {
    position: absolute;
    top: 16px;
    right: 20px;
    font-size: 46px;
    font-weight: 800;
    color: var(--primary-soft);
    line-height: 1;
}

.step-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 20px;
    background: linear-gradient(135deg, var(--primary-soft), #dfdcf9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--primary);
    position: relative;
    transition: all 0.3s;
}

.step-card:hover .step-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.step-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.step-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.step-card::after {
    content: '\f061';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 50%;
    right: -28px;
    transform: translateY(-50%);
    color: var(--primary-light);
    font-size: 18px;
    z-index: 2;
}

.step-card:last-child::after {
    display: none;
}

/* ==================== Platform ==================== */
.platform-section {
    background: var(--bg-light);
}

.platform-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.platform-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: all 0.35s;
    box-shadow: var(--shadow-sm);
}

.platform-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.platform-thumb {
    position: relative;
    height: 180px;
    overflow: hidden;
}

.platform-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.platform-card:hover .platform-thumb img {
    transform: scale(1.08);
}

.platform-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(21, 16, 51, 0.5), transparent 60%);
}

.platform-icon {
    position: absolute;
    bottom: 16px;
    left: 20px;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    box-shadow: var(--shadow-primary);
    z-index: 1;
}

.platform-info {
    padding: 22px 24px 26px;
}

.platform-name {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.platform-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 16px;
}

.platform-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.platform-tag {
    display: inline-block;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    background: var(--primary-soft);
    color: var(--primary);
}

.platform-tag.gold {
    background: var(--accent-soft);
    color: #C77B12;
}

.platform-link {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    margin-top: 6px;
    transition: gap 0.25s;
}

.platform-link:hover {
    gap: 10px;
}

/* ==================== Security ==================== */
.security-section {
    background: var(--bg-dark);
}

.security-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
    position: relative;
    z-index: 1;
}

.security-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-dark);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: all 0.35s;
}

.security-item:hover {
    background: rgba(255, 255, 255, 0.09);
    transform: translateY(-6px);
    border-color: rgba(108, 92, 231, 0.5);
}

.security-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 22px;
    border-radius: 18px;
    background: rgba(108, 92, 231, 0.2);
    border: 1px solid rgba(108, 92, 231, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: var(--accent-light);
    transition: all 0.3s;
}

.security-item:hover .security-icon {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: var(--shadow-primary);
}

.security-title {
    font-size: 17px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.security-desc {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.7;
}

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

.faq-wrap {
    max-width: 820px;
    margin: 0 auto;
}

.faq-list {
    border: none;
}

.faq-item {
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: 16px;
    overflow: hidden;
    transition: all 0.3s;
}

.faq-item:hover {
    border-color: var(--primary-light);
}

.faq-item.is-active {
    border-color: var(--primary);
    box-shadow: var(--shadow-md);
}

.faq-question {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    background: transparent;
    line-height: 1.5;
    border-bottom: 1px solid transparent;
}

.faq-question i.fa-circle-question {
    color: var(--primary);
    font-size: 18px;
    flex-shrink: 0;
}

.faq-question .faq-arrow {
    margin-left: auto;
    color: var(--text-muted);
    font-size: 14px;
    transition: transform 0.3s;
    flex-shrink: 0;
}

.faq-item.is-active .faq-arrow {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 4px 24px 22px 56px;
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.8;
    background: transparent;
}

/* ==================== CTA ==================== */
.cta-section {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--primary-dark), var(--bg-dark-2));
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -60px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: rgba(245, 166, 35, 0.12);
}

.cta-box {
    position: relative;
    z-index: 1;
    text-align: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    backdrop-filter: blur(8px);
}

.cta-box h2 {
    font-size: 28px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}

.cta-box p {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 30px;
}

.cta-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ==================== Footer ==================== */
.site-footer {
    background: var(--bg-dark);
    padding: 70px 0 0;
    color: rgba(255, 255, 255, 0.65);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.4fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border-dark);
}

.footer-brand .brand {
    margin-bottom: 16px;
}

.footer-brand .brand-name {
    color: #fff;
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 320px;
}

.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.25s, padding-left 0.25s;
}

.footer-col ul a:hover {
    color: var(--accent-light);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 14px;
}

.footer-contact li i {
    color: var(--accent-light);
    width: 18px;
    text-align: center;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 0;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-bottom p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.45);
}

.footer-domain {
    color: rgba(255, 255, 255, 0.65);
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    :root {
        --section-padding: 70px;
    }

    .header-actions .header-search {
        display: none;
    }

    .main-nav {
        gap: 2px;
    }

    .nav-link {
        padding: 8px 12px;
        font-size: 14px;
    }

    .steps-grid {
        gap: 20px;
    }

    .platform-grid {
        gap: 20px;
    }

    .security-grid {
        gap: 20px;
    }

    .step-card {
        padding: 28px 20px;
    }

    .step-icon {
        width: 60px;
        height: 60px;
        font-size: 22px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 56px;
    }

    .site-header {
        height: 64px;
    }

    .header-inner {
        height: 64px;
        gap: 12px;
    }

    .brand-icon {
        width: 36px;
        height: 36px;
        font-size: 15px;
    }

    .brand-name {
        font-size: 17px;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 24px 24px;
        box-shadow: var(--shadow-lg);
        border-bottom: 1px solid var(--border);
        gap: 6px;
    }

    .main-nav.open {
        display: flex;
    }

    .nav-link {
        display: block;
        width: 100%;
        padding: 12px 16px;
        font-size: 15px;
    }

    .header-actions {
        margin-left: auto;
    }

    .header-login {
        display: none;
    }

    .header-actions .btn-primary {
        padding: 8px 16px;
        font-size: 13px;
    }

    .mobile-toggle {
        display: flex;
    }

    .page-hero {
        padding: 60px 0 60px;
    }

    .hero-title {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 15px;
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: 12px;
    }

    .stat-item {
        padding: 14px 22px;
        min-width: 100px;
    }

    .stat-value {
        font-size: 24px;
    }

    .steps-grid {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
    }

    .steps-grid::before {
        display: none;
    }

    .step-card::after {
        display: none;
    }

    .platform-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .security-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .section-title {
        font-size: 28px;
    }
}

@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }

    .page-hero {
        padding: 48px 0 48px;
    }

    .hero-title {
        font-size: 26px;
    }

    .hero-badge {
        font-size: 12px;
        padding: 6px 14px;
    }

    .hero-cta .btn {
        padding: 10px 20px;
        font-size: 14px;
    }

    .hero-stats {
        gap: 8px;
        margin-top: 40px;
    }

    .stat-item {
        padding: 12px 14px;
        min-width: 80px;
        flex: 1;
    }

    .stat-value {
        font-size: 20px;
    }

    .stat-label {
        font-size: 11px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
    }

    .platform-grid {
        grid-template-columns: 1fr;
    }

    .security-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }

    .section-head {
        margin-bottom: 40px;
    }

    .cta-box {
        padding: 36px 24px;
    }

    .cta-box h2 {
        font-size: 22px;
    }

    .cta-actions {
        flex-direction: column;
        align-items: center;
    }

    .btn-lg {
        width: 100%;
        justify-content: center;
    }

    .header-actions .btn-primary {
        display: none;
    }

    .header-search {
        display: none;
    }
}

/* roulang page: article */
:root {
  --primary: #0f2b4c;
  --primary-light: #1d3f6e;
  --accent: #ff7a1a;
  --accent-hover: #e56b0c;
  --bg: #f6f8fb;
  --white: #ffffff;
  --text: #1a1a2e;
  --text-weak: #6b7280;
  --border: #e5e7eb;
  --radius: 14px;
  --radius-sm: 8px;
  --shadow: 0 2px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 32px rgba(0,0,0,0.12);
  --space-section: 76px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  transition: all .25s ease;
  border: 2px solid transparent;
  white-space: nowrap;
}
.btn i { font-size: 14px; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255,122,26,0.35);
}
.btn-primary:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--primary);
  border-color: var(--primary);
}
.btn-outline:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}
.btn-light {
  background: #fff;
  color: var(--primary);
  border-color: #fff;
}
.btn-light:hover {
  background: rgba(255,255,255,0.9);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(0,0,0,0.2);
}
.btn-ghost {
  background: rgba(255,255,255,0.14);
  color: #fff;
  border-color: rgba(255,255,255,0.55);
}
.btn-ghost:hover {
  background: rgba(255,255,255,0.26);
  border-color: #fff;
  transform: translateY(-2px);
}
.btn-lg { padding: 16px 38px; font-size: 16px; }
.btn-sm { padding: 8px 18px; font-size: 14px; }
.btn-block { width: 100%; }

/* ===== 徽章 ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-radius: 24px;
  font-size: 13px;
  font-weight: 600;
  line-height: 1;
}
.badge-accent {
  background: rgba(255,122,26,0.18);
  color: #ff8a3d;
  border: 1px solid rgba(255,122,26,0.3);
}
.badge-primary {
  background: var(--primary);
  color: #fff;
}
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: 20px;
  background: var(--bg);
  border: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-weak);
}

/* ===== Header ===== */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 10px rgba(0,0,0,0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
  gap: 28px;
  position: relative;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--accent), #ff9a4d);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 18px;
  box-shadow: 0 4px 14px rgba(255,122,26,0.3);
}
.brand-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.02em;
}
.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  flex: 1;
}
.nav-link {
  padding: 10px 18px;
  border-radius: 10px;
  color: var(--text);
  font-weight: 500;
  font-size: 15px;
  transition: all .25s ease;
  position: relative;
}
.nav-link:hover {
  background: var(--bg);
  color: var(--primary);
}
.nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(15,43,76,0.2);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--primary);
  background: var(--bg);
  transition: background .2s;
}
.menu-toggle:hover { background: #e8ecf1; }

/* ===== 文章 Hero ===== */
.article-hero {
  background-image: linear-gradient(135deg, rgba(15,43,76,0.93), rgba(29,63,110,0.88)), url('/assets/images/backpic/back-2.png');
  background-size: cover;
  background-position: center 30%;
  padding: 88px 0 72px;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.article-hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -120px;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(255,122,26,0.18), transparent 70%);
  border-radius: 50%;
}
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  margin-bottom: 24px;
  color: rgba(255,255,255,0.6);
}
.breadcrumb a { color: rgba(255,255,255,0.78); transition: color .2s; }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb .sep { color: rgba(255,255,255,0.38); }
.article-hero-content { position: relative; z-index: 2; max-width: 780px; }
.article-hero-content h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.01em;
  margin: 18px 0 14px;
}
.article-hero-content p.lead {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.78);
  max-width: 640px;
}
.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 22px;
  margin-top: 20px;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
}
.article-meta span { display: inline-flex; align-items: center; gap: 7px; }
.article-meta i { color: rgba(255,122,26,0.9); }

/* ===== 文章主体 ===== */
.article-section {
  padding: 56px 0 70px;
}
.article-card {
  background: var(--white);
  border-radius: 18px;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow .3s;
}
.article-card:hover { box-shadow: var(--shadow-lg); }
.article-cover img {
  width: 100%;
  height: 320px;
  object-fit: cover;
}
.article-content {
  padding: 42px 46px 34px;
  line-height: 2;
  color: #3d4a5c;
  font-size: 15.5px;
}
.article-content p { margin-bottom: 18px; }
.article-content h2, .article-content h3, .article-content h4 {
  color: var(--primary);
  margin: 32px 0 14px;
  font-weight: 700;
  line-height: 1.5;
}
.article-content h2 { font-size: 24px; }
.article-content h3 { font-size: 20px; }
.article-content h4 { font-size: 17px; }
.article-content ul {
  padding-left: 22px;
  margin-bottom: 18px;
  list-style: disc;
}
.article-content ol {
  padding-left: 22px;
  margin-bottom: 18px;
  list-style: decimal;
}
.article-content li { margin-bottom: 6px; }
.article-content blockquote {
  border-left: 4px solid var(--accent);
  background: #fff8f2;
  padding: 16px 20px;
  border-radius: 0 10px 10px 0;
  margin-bottom: 18px;
  color: #6b5b4e;
  font-size: 15px;
}
.article-content img {
  border-radius: 12px;
  margin: 20px 0;
}
.article-content a { color: var(--accent); text-decoration: underline; }
.article-tags {
  padding: 0 46px 26px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.article-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 22px 46px 36px;
  border-top: 1px solid #f0f0f0;
  margin-top: 6px;
  flex-wrap: wrap;
}

/* ===== 404 / not found ===== */
.not-found-card {
  background: var(--white);
  border-radius: 18px;
  box-shadow: var(--shadow);
  padding: 64px 40px;
  text-align: center;
}
.not-found-icon {
  width: 84px;
  height: 84px;
  margin: 0 auto 24px;
  border-radius: 24px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  color: var(--text-weak);
}
.not-found-card h2 { font-size: 26px; color: var(--primary); margin-bottom: 10px; }
.not-found-card p { color: var(--text-weak); margin-bottom: 26px; }

/* ===== 侧栏 ===== */
.sidebar-card {
  background: var(--white);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 26px 26px 22px;
  margin-bottom: 24px;
  transition: box-shadow .3s;
}
.sidebar-card:hover { box-shadow: var(--shadow-lg); }
.sidebar-card h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--bg);
  display: flex;
  align-items: center;
  gap: 10px;
}
.sidebar-card h3 i { color: var(--accent); font-size: 15px; }
.info-list li {
  display: flex;
  justify-content: space-between;
  padding: 9px 0;
  border-bottom: 1px solid #f5f5f5;
  font-size: 14px;
}
.info-list li:last-child { border-bottom: none; }
.info-list span { color: var(--text-weak); }
.info-list strong { color: var(--primary); font-weight: 600; }

.post-list li {
  padding: 14px 0;
  border-bottom: 1px solid #f0f0f0;
}
.post-list li:last-child { border-bottom: none; }
.post-list a {
  display: flex;
  flex-direction: column;
  gap: 5px;
  transition: color .2s;
}
.post-list a:hover .post-title { color: var(--accent); }
.post-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  line-height: 1.5;
  transition: color .2s;
}
.post-date {
  font-size: 12px;
  color: var(--text-weak);
  display: flex;
  align-items: center;
  gap: 5px;
}
.post-date i { font-size: 11px; }

.sidebar-help {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border: none;
}
.sidebar-help h3 { color: #fff; border-bottom-color: rgba(255,255,255,0.2); }
.sidebar-help h3 i { color: var(--accent); }
.sidebar-help p {
  font-size: 13.5px;
  line-height: 1.8;
  color: rgba(255,255,255,0.8);
  margin-bottom: 18px;
}
.sidebar-help .btn-outline {
  border-color: rgba(255,255,255,0.7);
  color: #fff;
}
.sidebar-help .btn-outline:hover {
  background: #fff;
  color: var(--primary);
}
.empty-text { color: var(--text-weak); font-size: 14px; }

/* ===== 探索更多 ===== */
.explore-section {
  padding: var(--space-section) 0;
  background: var(--white);
}
.section-head {
  text-align: center;
  margin-bottom: 42px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 0.01em;
}
.section-head p {
  color: var(--text-weak);
  font-size: 15px;
  margin-top: 10px;
}
.explore-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.explore-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 34px 30px;
  transition: transform .3s, box-shadow .3s, border-color .3s;
}
.explore-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(255,122,26,0.3);
}
.explore-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: linear-gradient(135deg, var(--accent), #ff9a4d);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 22px;
  margin-bottom: 20px;
  box-shadow: 0 6px 18px rgba(255,122,26,0.3);
}
.explore-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}
.explore-card p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.8;
  margin-bottom: 16px;
}
.explore-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--accent);
  transition: gap .2s;
}
.explore-link:hover { gap: 13px; }

/* ===== CTA ===== */
.cta-section {
  padding: 70px 0;
  background-image: linear-gradient(rgba(15,43,76,0.92), rgba(15,43,76,0.92)), url('/assets/images/backpic/back-1.png');
  background-size: cover;
  background-position: center;
  color: #fff;
  text-align: center;
}
.cta-box h2 {
  font-size: 32px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.cta-box p {
  margin-top: 10px;
  font-size: 16px;
  color: rgba(255,255,255,0.78);
}
.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 30px;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary);
  color: rgba(255,255,255,0.8);
  padding: 60px 0 0;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 42px;
  padding-bottom: 42px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
}
.footer-brand .brand {
  margin-bottom: 14px;
}
.footer-brand .brand-name {
  color: #fff;
  font-size: 1.15rem;
}
.footer-brand p {
  font-size: 13px;
  line-height: 1.9;
  color: rgba(255,255,255,0.6);
  max-width: 320px;
}
.footer-col h4 {
  color: #fff;
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-col ul li {
  margin-bottom: 10px;
}
.footer-col ul li a {
  color: rgba(255,255,255,0.6);
  transition: color .2s, padding-left .2s;
}
.footer-col ul li a:hover {
  color: var(--accent);
  padding-left: 4px;
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255,255,255,0.6);
}
.footer-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 20px 0;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.footer-domain { color: rgba(255,255,255,0.6); }

/* ===== 焦点状态 ===== */
a:focus-visible, button:focus-visible, .btn:focus-visible {
  outline: 3px solid rgba(255,122,26,0.45);
  outline-offset: 2px;
}

/* ===== 响应式 ===== */
@media (max-width: 1024px) {
  .article-hero-content h1 { font-size: 32px; }
  .article-content { padding: 36px 32px 28px; }
  .article-tags { padding: 0 32px 20px; }
  .article-actions { padding: 20px 32px 30px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
}

@media (max-width: 768px) {
  :root { --space-section: 52px; }
  .header-inner { height: 68px; gap: 14px; }
  .menu-toggle { display: flex; }
  .main-nav {
    position: absolute;
    top: 68px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px 20px;
    box-shadow: 0 12px 32px rgba(0,0,0,0.1);
    display: none;
    border-top: 1px solid var(--border);
  }
  .main-nav.open {
    display: flex;
  }
  .nav-link { padding: 12px 16px; font-size: 15px; }
  .article-hero { padding: 60px 0 48px; }
  .article-hero-content h1 { font-size: 27px; }
  .article-meta { gap: 14px; flex-wrap: wrap; }
  .article-cover img { height: 220px; }
  .article-content { font-size: 15px; padding: 28px 22px 22px; }
  .article-tags { padding: 0 22px 16px; }
  .article-actions { padding: 18px 22px 26px; flex-direction: column; align-items: stretch; }
  .article-actions .btn { width: 100%; }
  .explore-grid { grid-template-columns: 1fr; }
  .cta-box h2 { font-size: 26px; }
  .cta-actions .btn { width: 100%; max-width: 340px; margin: 0 auto; }
  .footer-grid { grid-template-columns: 1fr; gap: 24px; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 520px) {
  .container { padding: 0 18px; }
  .brand-name { font-size: 1rem; }
  .brand-icon { width: 36px; height: 36px; font-size: 16px; border-radius: 10px; }
  .header-actions .btn { padding: 8px 14px; font-size: 13px; }
  .article-hero { padding: 48px 0 40px; }
  .article-hero-content h1 { font-size: 22px; }
  .article-hero-content p.lead { font-size: 14px; }
  .section-head h2 { font-size: 24px; }
  .sidebar-card { padding: 20px; }
  .not-found-card { padding: 40px 20px; }
  .cta-box h2 { font-size: 22px; }
  .footer-bottom { font-size: 12px; }
}

/* roulang page: category2 */
:root {
    --primary: #6d5efc;
    --primary-600: #5846e8;
    --primary-soft: #efedff;
    --accent: #ff8a3d;
    --accent-soft: #fff1e8;
    --gold: #f5b940;
    --dark: #0e1220;
    --dark-2: #161d31;
    --dark-3: #1e2740;
    --bg: #f6f7fb;
    --white: #ffffff;
    --text: #1c2333;
    --muted: #67718c;
    --border: #e6e8f0;
    --radius-lg: 22px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --shadow-sm: 0 2px 12px rgba(15, 23, 42, .06);
    --shadow-md: 0 10px 32px rgba(15, 23, 42, .08);
    --shadow-lg: 0 20px 55px rgba(109, 94, 252, .18);
    --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.7; -webkit-font-smoothing: antialiased; }
a { text-decoration: none; color: inherit; transition: color .25s ease; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button, input { font-family: inherit; font-size: inherit; border: none; outline: none; background: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== Header ===== */
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255, 255, 255, .92); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; gap: 28px; height: 74px; }
.brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-icon { width: 40px; height: 40px; border-radius: 12px; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; box-shadow: 0 6px 18px rgba(109, 94, 252, .35); }
.brand-name { font-size: 20px; font-weight: 800; letter-spacing: .5px; background: linear-gradient(135deg, var(--primary), var(--accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.main-nav { display: flex; align-items: center; gap: 6px; flex: 1; justify-content: center; }
.nav-link { padding: 9px 18px; border-radius: 999px; font-size: 15px; font-weight: 600; color: var(--muted); transition: all .25s ease; position: relative; }
.nav-link:hover { color: var(--primary); background: var(--primary-soft); }
.nav-link.active { color: var(--primary); background: var(--primary-soft); }
.nav-link.active::after { content: ""; position: absolute; bottom: 2px; left: 50%; transform: translateX(-50%); width: 18px; height: 3px; border-radius: 3px; background: var(--primary); }
.header-actions { display: flex; align-items: center; gap: 12px; flex-shrink: 0; }
.search-box { display: flex; align-items: center; gap: 8px; background: var(--bg); border: 1px solid var(--border); border-radius: 999px; padding: 8px 16px; width: 180px; transition: all .25s ease; }
.search-box:focus-within { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(109, 94, 252, .12); background: #fff; }
.search-box i { color: var(--muted); font-size: 14px; }
.search-box input { width: 100%; font-size: 14px; color: var(--text); }
.search-box input::placeholder { color: #a0a8b8; }
.btn-login { font-size: 14px; font-weight: 600; color: var(--text); padding: 8px 16px; border-radius: 999px; transition: all .25s ease; border: 1px solid transparent; }
.btn-login:hover { color: var(--primary); background: var(--primary-soft); }
.btn-primary { display: inline-flex; align-items: center; gap: 8px; background: linear-gradient(135deg, var(--primary), var(--primary-600)); color: #fff; font-weight: 700; padding: 11px 26px; border-radius: 999px; font-size: 15px; box-shadow: 0 8px 24px rgba(109, 94, 252, .35); transition: all .3s ease; border: none; cursor: pointer; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px rgba(109, 94, 252, .42); color: #fff; }
.btn-primary:active { transform: translateY(0); }
.btn-primary:focus-visible, .nav-link:focus-visible, .btn-login:focus-visible { outline: 3px solid rgba(109, 94, 252, .4); outline-offset: 2px; }
.nav-toggle { display: none; width: 42px; height: 42px; border-radius: 10px; background: var(--bg); color: var(--text); font-size: 18px; align-items: center; justify-content: center; cursor: pointer; }

/* ===== Page Banner ===== */
.page-banner { position: relative; background-size: cover; background-position: center; padding: 96px 0 80px; color: #fff; overflow: hidden; }
.page-banner::before { content: ""; position: absolute; inset: 0; background: linear-gradient(100deg, rgba(14, 18, 32, .92) 0%, rgba(14, 18, 32, .72) 50%, rgba(14, 18, 32, .45) 100%); }
.banner-content { position: relative; z-index: 2; }
.breadcrumb { display: flex; align-items: center; gap: 10px; font-size: 14px; color: rgba(255, 255, 255, .8); margin-bottom: 22px; }
.breadcrumb a { color: rgba(255, 255, 255, .7); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .sep { font-size: 12px; color: rgba(255, 255, 255, .5); }
.page-banner h1 { font-size: 44px; font-weight: 900; line-height: 1.2; margin-bottom: 18px; letter-spacing: 1px; }
.page-banner h1 span { background: linear-gradient(135deg, var(--gold), var(--accent)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.banner-desc { font-size: 17px; color: rgba(255, 255, 255, .85); max-width: 700px; line-height: 1.8; margin-bottom: 40px; }
.banner-stats { display: flex; gap: 16px; flex-wrap: wrap; }
.stat-item { background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .16); backdrop-filter: blur(8px); border-radius: var(--radius-md); padding: 20px 28px; min-width: 140px; text-align: center; transition: all .3s ease; }
.stat-item:hover { background: rgba(255, 255, 255, .18); transform: translateY(-4px); }
.stat-item strong { display: block; font-size: 26px; font-weight: 800; background: linear-gradient(135deg, #fff, var(--gold)); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.stat-item span { font-size: 13px; color: rgba(255, 255, 255, .8); margin-top: 2px; display: block; }

/* ===== Section base ===== */
.section { padding: 90px 0; }
.section-alt { background: var(--white); }
.section-head { text-align: center; max-width: 680px; margin: 0 auto 54px; }
.section-tag { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 700; color: var(--primary); background: var(--primary-soft); padding: 7px 20px; border-radius: 999px; margin-bottom: 16px; letter-spacing: 2px; }
.section-tag::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); }
.section-head h2 { font-size: 34px; font-weight: 900; line-height: 1.3; margin-bottom: 14px; letter-spacing: .5px; }
.section-head p { font-size: 16px; color: var(--muted); line-height: 1.8; }

/* ===== Featured guides ===== */
.featured-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.feature-card { background: var(--white); border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); box-shadow: var(--shadow-sm); transition: all .35s ease; display: flex; flex-direction: column; }
.feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: transparent; }
.feature-media { position: relative; overflow: hidden; aspect-ratio: 16/10; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
.feature-card:hover .feature-media img { transform: scale(1.05); }
.feature-media .badge { position: absolute; top: 16px; left: 16px; background: rgba(255, 255, 255, .92); backdrop-filter: blur(4px); color: var(--primary); font-size: 13px; font-weight: 700; padding: 6px 14px; border-radius: 999px; box-shadow: var(--shadow-sm); }
.feature-body { padding: 24px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.feature-meta { display: flex; align-items: center; gap: 16px; font-size: 13px; color: var(--muted); margin-bottom: 12px; }
.feature-meta span { display: flex; align-items: center; gap: 6px; }
.feature-body h3 { font-size: 19px; font-weight: 800; line-height: 1.5; margin-bottom: 10px; color: var(--text); transition: color .25s; }
.feature-card:hover .feature-body h3 { color: var(--primary); }
.feature-body p { font-size: 14px; color: var(--muted); line-height: 1.7; margin-bottom: 18px; flex: 1; }
.feature-footer { display: flex; align-items: center; justify-content: space-between; border-top: 1px solid var(--border); padding-top: 16px; }
.feature-footer .tag { font-size: 13px; color: var(--accent); background: var(--accent-soft); padding: 4px 12px; border-radius: 999px; font-weight: 600; }
.read-more { font-size: 14px; font-weight: 700; color: var(--primary); display: flex; align-items: center; gap: 6px; }
.read-more i { transition: transform .25s; }
.read-more:hover i { transform: translateX(4px); }

/* ===== Category cards (dark) ===== */
.cat-section { background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%); position: relative; overflow: hidden; }
.cat-section::before { content: ""; position: absolute; width: 500px; height: 500px; border-radius: 50%; background: rgba(109, 94, 252, .15); filter: blur(100px); top: -150px; right: -100px; }
.cat-section .section-head h2 { color: #fff; }
.cat-section .section-head p { color: rgba(255, 255, 255, .6); }
.cat-section .section-tag { background: rgba(109, 94, 252, .2); color: #b7aaff; }
.cat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; position: relative; z-index: 2; }
.cat-card { background: rgba(255, 255, 255, .06); border: 1px solid rgba(255, 255, 255, .1); border-radius: var(--radius-lg); padding: 30px 26px; backdrop-filter: blur(6px); transition: all .35s ease; display: flex; flex-direction: column; }
.cat-card:hover { background: rgba(255, 255, 255, .1); border-color: rgba(109, 94, 252, .5); transform: translateY(-6px); box-shadow: 0 20px 40px rgba(0, 0, 0, .25); }
.cat-icon { width: 54px; height: 54px; border-radius: 16px; background: linear-gradient(135deg, rgba(109, 94, 252, .3), rgba(255, 138, 61, .25)); display: flex; align-items: center; justify-content: center; font-size: 22px; color: #b7aaff; margin-bottom: 20px; transition: all .35s; }
.cat-card:hover .cat-icon { background: linear-gradient(135deg, var(--primary), var(--accent)); color: #fff; transform: rotate(-6deg) scale(1.08); }
.cat-card h3 { color: #fff; font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.cat-card p { color: rgba(255, 255, 255, .6); font-size: 14px; line-height: 1.7; margin-bottom: 18px; flex: 1; }
.cat-card .cat-link { display: inline-flex; align-items: center; gap: 8px; color: #b7aaff; font-size: 14px; font-weight: 700; }
.cat-card .cat-link i { transition: transform .25s; }
.cat-card:hover .cat-link i { transform: translateX(4px); }

/* ===== Ranking ===== */
.rank-wrap { max-width: 980px; margin: 0 auto; }
.rank-list { display: flex; flex-direction: column; gap: 14px; }
.rank-item { display: flex; align-items: center; gap: 22px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 20px 26px; box-shadow: var(--shadow-sm); transition: all .3s ease; }
.rank-item:hover { transform: translateX(6px); box-shadow: var(--shadow-md); border-color: rgba(109, 94, 252, .35); }
.rank-num { width: 46px; height: 46px; border-radius: 14px; background: var(--bg); display: flex; align-items: center; justify-content: center; font-size: 18px; font-weight: 900; color: var(--muted); flex-shrink: 0; }
.rank-item:nth-child(1) .rank-num { background: linear-gradient(135deg, var(--gold), #ff9a3d); color: #fff; box-shadow: 0 6px 16px rgba(245, 185, 64, .4); }
.rank-item:nth-child(2) .rank-num { background: linear-gradient(135deg, #a8b0bf, #6b7280); color: #fff; box-shadow: 0 6px 16px rgba(107, 114, 128, .3); }
.rank-item:nth-child(3) .rank-num { background: linear-gradient(135deg, #c9804a, #a05a28); color: #fff; box-shadow: 0 6px 16px rgba(192, 128, 74, .3); }
.rank-info { flex: 1; min-width: 0; }
.rank-info .rank-tag { display: inline-block; font-size: 12px; font-weight: 700; color: var(--primary); background: var(--primary-soft); padding: 3px 10px; border-radius: 999px; margin-bottom: 6px; }
.rank-info h3 { font-size: 16px; font-weight: 700; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-stats { display: flex; align-items: center; gap: 22px; flex-shrink: 0; }
.rank-views { font-size: 14px; color: var(--muted); display: flex; align-items: center; gap: 6px; }
.rank-rate { font-size: 14px; color: var(--gold); display: flex; align-items: center; gap: 6px; font-weight: 700; }

/* ===== Process ===== */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.process-card { position: relative; text-align: center; padding: 0 10px; }
.process-num { width: 64px; height: 64px; margin: 0 auto 22px; border-radius: 50%; background: linear-gradient(135deg, var(--primary), var(--accent)); display: flex; align-items: center; justify-content: center; font-size: 22px; font-weight: 900; color: #fff; box-shadow: 0 12px 30px rgba(109, 94, 252, .32); position: relative; z-index: 2; }
.process-card::after { content: ""; position: absolute; top: 32px; right: -12%; width: 24%; height: 2px; background: repeating-linear-gradient(90deg, var(--border) 0 8px, transparent 8px 14px); }
.process-card:last-child::after { display: none; }
.process-card h3 { font-size: 17px; font-weight: 800; margin-bottom: 10px; }
.process-card p { font-size: 14px; color: var(--muted); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-wrap { max-width: 800px; margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.faq-item { background: var(--white); border: 1px solid var(--border); border-radius: var(--radius-md); overflow: hidden; box-shadow: var(--shadow-sm); transition: all .3s ease; }
.faq-item:hover { border-color: rgba(109, 94, 252, .3); }
.faq-item.open { box-shadow: var(--shadow-md); border-color: rgba(109, 94, 252, .45); }
.faq-q { width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 22px 26px; cursor: pointer; font-size: 16px; font-weight: 700; color: var(--text); text-align: left; transition: color .25s; }
.faq-q:hover { color: var(--primary); }
.faq-q i { font-size: 15px; color: var(--primary); transition: transform .35s ease; flex-shrink: 0; }
.faq-item.open .faq-q i { transform: rotate(180deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; }
.faq-a-inner { padding: 0 26px 22px; font-size: 15px; color: var(--muted); line-height: 1.9; border-top: 1px solid var(--border); padding-top: 16px; }

/* ===== CTA ===== */
.cta-section { position: relative; background-size: cover; background-position: center; padding: 110px 0; text-align: center; color: #fff; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; inset: 0; background: linear-gradient(135deg, rgba(14, 18, 32, .94), rgba(88, 70, 232, .82)); }
.cta-content { position: relative; z-index: 2; max-width: 720px; margin: 0 auto; }
.cta-content .section-tag { background: rgba(255, 255, 255, .16); color: #fff; }
.cta-content h2 { font-size: 38px; font-weight: 900; line-height: 1.3; margin-bottom: 16px; }
.cta-content p { font-size: 17px; color: rgba(255, 255, 255, .8); line-height: 1.8; margin-bottom: 34px; }
.cta-btns { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.btn-light { display: inline-flex; align-items: center; gap: 8px; background: #fff; color: var(--primary); font-weight: 800; padding: 14px 34px; border-radius: 999px; font-size: 16px; box-shadow: 0 12px 40px rgba(0, 0, 0, .2); transition: all .3s ease; }
.btn-light:hover { transform: translateY(-3px); box-shadow: 0 16px 50px rgba(0, 0, 0, .3); color: var(--primary); }
.btn-outline-light { display: inline-flex; align-items: center; gap: 8px; border: 2px solid rgba(255, 255, 255, .8); color: #fff; font-weight: 700; padding: 12px 32px; border-radius: 999px; font-size: 16px; transition: all .3s ease; }
.btn-outline-light:hover { background: rgba(255, 255, 255, .12); border-color: #fff; color: #fff; transform: translateY(-3px); }

/* ===== Footer ===== */
.site-footer { background: var(--dark); color: rgba(255, 255, 255, .75); padding: 80px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 44px; padding-bottom: 54px; }
.footer-brand .brand { margin-bottom: 18px; }
.footer-brand .brand-icon { background: linear-gradient(135deg, var(--primary), var(--accent)); }
.footer-brand .brand-name { color: #fff; -webkit-text-fill-color: initial; font-weight: 800; font-size: 22px; }
.footer-brand p { font-size: 14px; line-height: 1.9; color: rgba(255, 255, 255, .55); max-width: 340px; }
.footer-col h4 { color: #fff; font-size: 16px; font-weight: 800; margin-bottom: 20px; letter-spacing: 1px; }
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul a { color: rgba(255, 255, 255, .6); font-size: 14px; transition: all .25s; display: inline-flex; align-items: center; gap: 6px; }
.footer-col ul a:hover { color: #fff; padding-left: 6px; }
.footer-contact li { font-size: 14px; color: rgba(255, 255, 255, .6); display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.footer-contact i { color: var(--accent); width: 18px; text-align: center; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, .1); padding: 24px 0; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; font-size: 13px; color: rgba(255, 255, 255, .45); }
.footer-domain { color: rgba(255, 255, 255, .6); }

/* ===== Mobile responsive ===== */
@media (max-width: 1024px) {
    .header-inner { gap: 16px; }
    .search-box { width: 140px; }
    .featured-grid, .cat-grid { grid-template-columns: repeat(2, 1fr); }
    .process-grid { grid-template-columns: repeat(2, 1fr); row-gap: 40px; }
    .process-card::after { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .main-nav { position: fixed; top: 74px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 16px 24px; border-bottom: 1px solid var(--border); box-shadow: var(--shadow-md); transform: translateY(-120%); transition: transform .35s ease; z-index: 99; }
    .main-nav.open { transform: translateY(0); }
    .nav-link { padding: 14px 16px; border-radius: 10px; font-size: 16px; }
    .nav-link.active::after { display: none; }
    .nav-link.active { background: var(--primary-soft); }
    .header-actions { gap: 8px; }
    .search-box { display: none; }
    .btn-login { padding: 8px 10px; font-size: 13px; }
    .btn-primary { padding: 9px 16px; font-size: 13px; }
    .header-actions .btn-primary { display: none; }
    .header-actions, .main-nav.open + .header-actions { }
    .page-banner { padding: 68px 0 56px; }
    .page-banner h1 { font-size: 30px; }
    .banner-desc { font-size: 15px; }
    .stat-item { min-width: 110px; padding: 14px 18px; }
    .stat-item strong { font-size: 20px; }
    .section { padding: 64px 0; }
    .section-head h2 { font-size: 26px; }
    .featured-grid, .cat-grid { grid-template-columns: 1fr; }
    .rank-item { flex-wrap: wrap; gap: 12px; padding: 16px; }
    .rank-stats { width: 100%; padding-left: 68px; gap: 16px; }
    .rank-info h3 { white-space: normal; }
    .process-grid { grid-template-columns: 1fr; }
    .cta-section { padding: 76px 0; }
    .cta-content h2 { font-size: 28px; }
    .footer-grid { grid-template-columns: 1fr; gap: 34px; }
    .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 520px) {
    .container { padding: 0 18px; }
    .header-inner { height: 64px; }
    .brand-icon { width: 34px; height: 34px; font-size: 15px; }
    .brand-name { font-size: 17px; }
    .btn-login { display: none; }
    .main-nav { top: 64px; }
    .banner-stats { gap: 10px; }
    .stat-item { min-width: calc(50% - 10px); }
    .page-banner h1 { font-size: 26px; }
    .rank-item { flex-direction: column; align-items: flex-start; }
    .rank-stats { padding-left: 0; }
}

/* roulang page: category3 */
:root {
            --primary: #6C5CE7;
            --primary-dark: #5A4BD1;
            --primary-light: #8F7FF8;
            --secondary: #00C9A7;
            --secondary-dark: #00A98D;
            --accent: #FFB830;
            --accent-dark: #F39A12;
            --dark: #0B1020;
            --dark-2: #121A30;
            --dark-3: #1B2540;
            --body-bg: #F5F7FB;
            --text: #1E293B;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --white: #FFFFFF;
            --radius: 16px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.12);
            --transition: 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background: var(--body-bg);
            -webkit-font-smoothing: antialiased;
        }

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

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

        ul,
        ol {
            list-style: none;
        }

        button,
        input {
            font: inherit;
            border: none;
            outline: none;
            background: none;
        }

        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 32px;
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }
        }

        /* ===== Header ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
            box-shadow: 0 1px 12px rgba(0, 0, 0, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
            gap: 20px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.35);
        }

        .brand-name {
            font-size: 20px;
            font-weight: 800;
            color: var(--text);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex: 1;
            justify-content: center;
        }

        .nav-link {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            border-radius: 10px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-link:hover {
            color: var(--primary);
            background: rgba(108, 92, 231, 0.08);
        }

        .nav-link.active {
            color: var(--primary);
            font-weight: 700;
            background: rgba(108, 92, 231, 0.1);
        }

        .nav-link.active::after {
            content: "";
            display: block;
            height: 3px;
            width: 24px;
            border-radius: 99px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            margin: 4px auto 0;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-search {
            position: relative;
            display: flex;
            align-items: center;
        }

        .header-search i {
            position: absolute;
            left: 14px;
            color: var(--text-muted);
            font-size: 14px;
            pointer-events: none;
        }

        .header-search input {
            width: 180px;
            padding: 9px 14px 9px 38px;
            border-radius: 20px;
            border: 1px solid var(--border);
            background: var(--body-bg);
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
        }

        .header-search input:focus {
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.12);
            width: 200px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: #fff;
            box-shadow: 0 4px 14px rgba(108, 92, 231, 0.3);
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(108, 92, 231, 0.45);
            color: #fff;
        }

        .btn-ghost {
            background: transparent;
            color: var(--text);
            border: 1px solid var(--border);
        }

        .btn-ghost:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(108, 92, 231, 0.05);
        }

        .btn-light {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 16px rgba(255, 255, 255, 0.2);
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 255, 255, 0.25);
            color: var(--primary-dark);
        }

        .btn-outline-light {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
        }

        .btn-outline-light:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 7px 16px;
            font-size: 13px;
            border-radius: 8px;
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            cursor: pointer;
            background: transparent;
        }

        .nav-toggle span {
            display: block;
            width: 22px;
            height: 2px;
            background: var(--text);
            border-radius: 2px;
            transition: all 0.3s ease;
        }

        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }

        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        /* ===== Hero ===== */
        .community-hero {
            position: relative;
            background: linear-gradient(135deg, rgba(11, 16, 32, 0.92), rgba(30, 27, 75, 0.85)),
                url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            padding: 100px 0 90px;
            color: #fff;
            overflow: hidden;
        }

        .community-hero::before {
            content: "";
            position: absolute;
            top: -120px;
            right: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 92, 231, 0.3), transparent 70%);
            pointer-events: none;
        }

        .community-hero::after {
            content: "";
            position: absolute;
            bottom: -80px;
            left: 20%;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(0, 201, 167, 0.2), transparent 70%);
            pointer-events: none;
        }

        .hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 60px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 18px;
            border-radius: 20px;
            background: rgba(255, 184, 48, 0.18);
            border: 1px solid rgba(255, 184, 48, 0.4);
            color: var(--accent);
            font-size: 13px;
            font-weight: 600;
            margin-bottom: 22px;
        }

        .hero-badge i {
            font-size: 12px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 18px;
            color: #fff;
        }

        .hero-title span {
            background: linear-gradient(90deg, var(--accent), #FF6B6B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            max-width: 520px;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 68px;
            margin-bottom: 32px;
            padding: 20px 0;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
        }

        .hero-meta-item {
            text-align: left;
        }

        .hero-meta-num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }

        .hero-meta-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 2px;
        }

        .hero-buttons {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .countdown-card {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.14);
            border-radius: 20px;
            padding: 32px 36px;
            backdrop-filter: blur(16px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
        }

        .countdown-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .countdown-title {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
        }

        .countdown-title i {
            color: var(--accent);
            margin-right: 8px;
        }

        .countdown-tag {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(255, 184, 48, 0.25);
            color: var(--accent);
        }

        .countdown-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 12px;
            margin-bottom: 20px;
        }

        .countdown-item {
            background: rgba(255, 255, 255, 0.1);
            border-radius: 14px;
            padding: 16px 8px;
            text-align: center;
        }

        .countdown-num {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            font-variant-numeric: tabular-nums;
            line-height: 1.2;
        }

        .countdown-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-top: 4px;
        }

        .countdown-note {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
            margin-top: 14px;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .countdown-note i {
            color: var(--accent);
            margin-right: 4px;
        }

        /* ===== Section common ===== */
        .section {
            padding: 76px 0;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(108, 92, 231, 0.1);
            padding: 6px 18px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: 34px;
            font-weight: 800;
            color: var(--text);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto;
            line-height: 1.7;
        }

        /* ===== Events ===== */
        .events-section {
            background: #fff;
            border: 1px solid transparent;
            border-radius: 0;
            padding: 76px 0;
        }

        .events-section .section-header {
            text-align: left;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
        }

        .events-section .section-desc {
            max-width: 480px;
            margin: 0;
            text-align: left;
        }

        .events-scroll {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            padding: 8px 4px 20px;
            scroll-snap-type: x mandatory;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) transparent;
        }

        .events-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .events-scroll::-webkit-scrollbar-track {
            background: transparent;
        }

        .events-scroll::-webkit-scrollbar-thumb {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 99px;
        }

        .event-card {
            flex: 0 0 320px;
            scroll-snap-align: start;
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

        .event-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(108, 92, 231, 0.3);
        }

        .event-card-img {
            position: relative;
            height: 180px;
            overflow: hidden;
        }

        .event-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .event-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.35), transparent 60%);
        }

        .event-card-tag {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            background: rgba(255, 184, 48, 0.9);
            color: #1a1a1a;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
        }

        .event-card-tag.hot {
            background: rgba(255, 107, 107, 0.9);
            color: #fff;
        }

        .event-card-body {
            padding: 20px;
        }

        .event-card-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 6px;
        }

        .event-card-info {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .event-card-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
        }

        .event-card-btn:hover {
            color: var(--primary-dark);
            gap: 10px;
        }

        .event-card-btn i {
            font-size: 12px;
            transition: transform var(--transition);
        }

        /* ===== Leaderboard & Stages ===== */
        .ls-section {
            background: var(--body-bg);
        }

        .ls-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .ls-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            padding: 32px;
            transition: box-shadow var(--transition);
        }

        .ls-card:hover {
            box-shadow: var(--shadow-md);
        }

        .ls-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 24px;
        }

        .ls-card-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
        }

        .ls-card-title i {
            color: var(--primary);
            margin-right: 8px;
        }

        .ls-more {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
        }

        .ls-more:hover {
            color: var(--primary-dark);
        }

        .rank-list {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .rank-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 12px 14px;
            border-radius: 12px;
            transition: background var(--transition);
        }

        .rank-item:hover {
            background: var(--body-bg);
        }

        .rank-item:nth-child(1) .rank-badge {
            background: linear-gradient(135deg, #FFB830, #F39A12);
            color: #fff;
            box-shadow: 0 3px 10px rgba(255, 184, 48, 0.4);
        }

        .rank-item:nth-child(2) .rank-badge {
            background: linear-gradient(135deg, #8FA6B4, #708090);
            color: #fff;
        }

        .rank-item:nth-child(3) .rank-badge {
            background: linear-gradient(135deg, #CD8032, #A0652F);
            color: #fff;
        }

        .rank-badge {
            width: 32px;
            height: 32px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 800;
            background: var(--body-bg);
            color: var(--text-muted);
            flex-shrink: 0;
        }

        .rank-avatar {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 15px;
            flex-shrink: 0;
        }

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

        .rank-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .rank-sub {
            font-size: 13px;
            color: var(--text-muted);
        }

        .rank-points {
            font-size: 15px;
            font-weight: 700;
            color: var(--primary);
            white-space: nowrap;
        }

        .stages-wrap {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .stage-card {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 18px;
            border-radius: 14px;
            border: 1px solid var(--border);
            background: var(--body-bg);
            transition: all var(--transition);
        }

        .stage-card:hover {
            border-color: var(--primary);
            background: rgba(108, 92, 231, 0.04);
            transform: translateX(4px);
        }

        .stage-card.active {
            border-color: var(--primary);
            background: rgba(108, 92, 231, 0.06);
            box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.15);
        }

        .stage-icon {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: #fff;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
        }

        .stage-card.active .stage-icon {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .stage-info {
            flex: 1;
        }

        .stage-name {
            font-size: 15px;
            font-weight: 700;
            color: var(--text);
        }

        .stage-date {
            font-size: 13px;
            color: var(--text-muted);
        }

        .stage-status {
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .stage-status.done {
            background: rgba(0, 201, 167, 0.1);
            color: var(--secondary-dark);
        }

        .stage-status.live {
            background: rgba(255, 184, 48, 0.2);
            color: var(--accent-dark);
        }

        .stage-status.upcoming {
            background: var(--border);
            color: var(--text-muted);
        }

        /* ===== Featured Posts ===== */
        .posts-section {
            background: #fff;
        }

        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .post-card {
            border-radius: var(--radius);
            border: 1px solid var(--border);
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }

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

        .post-card-img {
            height: 200px;
            overflow: hidden;
            position: relative;
        }

        .post-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .post-card:hover .post-card-img img {
            transform: scale(1.05);
        }

        .post-card-img::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(0, 0, 0, 0.25), transparent 55%);
        }

        .post-cat {
            position: absolute;
            top: 14px;
            left: 14px;
            z-index: 2;
            font-size: 12px;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 20px;
            background: rgba(108, 92, 231, 0.95);
            color: #fff;
        }

        .post-body {
            padding: 22px;
        }

        .post-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

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

        .post-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-title:hover {
            color: var(--primary);
        }

        .post-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .post-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--border);
        }

        .post-author {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
        }

        .post-author-avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--secondary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 12px;
        }

        .post-stats {
            display: flex;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .post-stats span {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ===== Rules ===== */
        .rules-section {
            background: var(--body-bg);
        }

        .rules-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .rule-card {
            background: #fff;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .rule-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(108, 92, 231, 0.25);
        }

        .rule-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            margin: 0 auto 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
        }

        .rule-icon.teal {
            background: linear-gradient(135deg, var(--secondary), #5CE5C0);
        }

        .rule-icon.amber {
            background: linear-gradient(135deg, var(--accent), #FFD76E);
        }

        .rule-icon.red {
            background: linear-gradient(135deg, #FF6B6B, #FF9F9F);
        }

        .rule-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 8px;
        }

        .rule-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
        }

        /* ===== FAQ ===== */
        .faq-section {
            background: #fff;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            border: 1px solid var(--border);
            border-radius: 14px;
            background: var(--body-bg);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item.open {
            border-color: rgba(108, 92, 231, 0.45);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: color var(--transition);
        }

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

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(108, 92, 231, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: all var(--transition);
        }

        .faq-item.open .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }

        .faq-icon i {
            font-size: 12px;
        }

        .faq-answer {
            display: none;
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(11, 16, 32, 0.94), rgba(30, 27, 75, 0.88)),
                url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            text-align: center;
        }

        .cta-inner {
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-icon {
            width: 68px;
            height: 68px;
            border-radius: 20px;
            margin: 0 auto 24px;
            background: linear-gradient(135deg, var(--accent), #FF6B6B);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            color: #fff;
            box-shadow: 0 8px 28px rgba(255, 184, 48, 0.4);
        }

        .cta-title {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 14px;
            color: #fff;
        }

        .cta-desc {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.7;
            margin-bottom: 30px;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr 0.8fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .brand {
            margin-bottom: 16px;
        }

        .footer-brand .brand-icon {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
        }

        .footer-brand .brand-name {
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: all var(--transition);
        }

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 4px;
        }

        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
        }

        .footer-contact i {
            color: var(--accent);
            width: 16px;
            text-align: center;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 10px;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        .footer-domain {
            letter-spacing: 0.5px;
        }

        /* ===== Focus states ===== */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(108, 92, 231, 0.4);
            outline-offset: 2px;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .header-inner {
                padding: 0 20px;
            }

            .header-search {
                display: none;
            }

            .hero-inner {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-title {
                font-size: 36px;
            }

            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .rules-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: 76px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: stretch;
                padding: 12px 20px 20px;
                box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
                display: none;
                z-index: 99;
                gap: 2px;
            }

            .main-nav.open {
                display: flex;
            }

            .nav-link {
                padding: 12px 18px;
                border-radius: 10px;
            }

            .nav-link.active::after {
                width: 18px;
                margin: 4px 0 0;
            }

            .nav-toggle {
                display: flex;
            }

            .header-actions {
                margin-right: 4px;
            }

            .header-actions .btn-ghost {
                display: none;
            }

            .header-actions .btn-primary {
                padding: 9px 16px;
                font-size: 13px;
            }

            .community-hero {
                padding: 60px 0;
            }

            .hero-title {
                font-size: 30px;
            }

            .hero-meta {
                gap: 30px;
            }

            .hero-meta-num {
                font-size: 22px;
            }

            .ls-grid {
                grid-template-columns: 1fr;
            }

            .posts-grid {
                grid-template-columns: 1fr;
            }

            .events-scroll {
                padding-bottom: 12px;
            }

            .event-card {
                flex: 0 0 280px;
            }

            .section-title {
                font-size: 26px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .cta-title {
                font-size: 28px;
            }

            .countdown-card {
                padding: 24px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                height: 64px;
            }

            .main-nav {
                top: 64px;
            }

            .brand-name {
                font-size: 16px;
            }

            .brand-icon {
                width: 36px;
                height: 36px;
                font-size: 16px;
            }

            .header-actions .btn-primary {
                padding: 8px 14px;
                font-size: 12px;
            }

            .hero-title {
                font-size: 26px;
            }

            .hero-meta {
                gap: 20px;
                padding: 16px 0;
            }

            .hero-meta-num {
                font-size: 20px;
            }

            .hero-meta-label {
                font-size: 12px;
            }

            .countdown-grid {
                gap: 8px;
            }

            .countdown-item {
                padding: 12px 4px;
            }

            .countdown-num {
                font-size: 24px;
            }

            .rules-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 56px 0;
            }

            .events-section .section-header {
                flex-direction: column;
                align-items: flex-start;
                text-align: left;
                margin-bottom: 28px;
            }

            .event-card {
                flex: 0 0 250px;
            }

            .faq-question {
                font-size: 14px;
                padding: 16px 18px;
            }

            .faq-answer {
                font-size: 14px;
                padding: 0 18px 18px;
            }

            .cta-buttons .btn {
                width: 100%;
            }

            .footer-grid {
                gap: 24px;
            }
        }

        /* ===== Advanced visual ===== */
        .scroll-hint {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .scroll-hint i {
            animation: scroll-hint 1.8s ease infinite;
        }

        @keyframes scroll-hint {
            0%,
            100% {
                transform: translateX(0);
            }
            50% {
                transform: translateX(4px);
            }
        }

        @media (max-width: 520px) {
            .scroll-hint {
                display: none;
            }
        }