/* roulang page: index */
:root {
            --primary: #2566f0;
            --primary-600: #174fc2;
            --primary-100: #e8f0fe;
            --accent: #0fb5a2;
            --accent-600: #0a8a7d;
            --dark: #081a2e;
            --dark-800: #0f2440;
            --surface: #ffffff;
            --surface-2: #f4f7fb;
            --text-strong: #0b1b2e;
            --text-body: #33475b;
            --text-weak: #7a8ba0;
            --border: #e3e9f1;
            --radius-lg: 22px;
            --radius: 14px;
            --radius-sm: 8px;
            --shadow-sm: 0 2px 10px rgba(8, 26, 46, .05);
            --shadow: 0 8px 30px rgba(8, 26, 46, .07);
            --shadow-lg: 0 24px 60px rgba(8, 26, 46, .14);
            --shadow-blue: 0 12px 30px rgba(37, 102, 240, .25);
            --gradient: linear-gradient(135deg, #2566f0, #0fb5a2);
            --transition: all .25s ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            background: var(--surface-2);
            color: var(--text-body);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            border: none;
            cursor: pointer;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }
        .container-cust {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 90px 0;
        }
        .brand-text {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: .5px;
        }
        .text-gradient {
            background: var(--gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .btn-main {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            background: var(--gradient);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            border: none;
            transition: var(--transition);
            box-shadow: var(--shadow-blue);
        }
        .btn-main:hover {
            transform: translateY(-2px);
            box-shadow: 0 18px 36px rgba(37, 102, 240, .32);
            color: #fff;
        }
        .btn-outline-light {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 50px;
            border: 1.5px solid rgba(255, 255, 255, .6);
            color: #fff;
            font-weight: 600;
            font-size: 15px;
            background: transparent;
            transition: var(--transition);
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }
        .badge-soft {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            background: var(--primary-100);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .5px;
        }
        .badge-soft-green {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            background: rgba(15, 181, 162, .1);
            color: var(--accent-600);
            font-size: 12px;
            font-weight: 600;
        }
        .badge-soft-dark {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 40px;
            background: rgba(255, 255, 255, .14);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 54px;
        }
        .section-head .subtitle {
            color: var(--primary);
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 3px;
            text-transform: uppercase;
            margin-bottom: 10px;
            display: inline-block;
        }
        .section-head h2 {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-strong);
            line-height: 1.35;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }
        .section-head p {
            color: var(--text-weak);
            font-size: 16px;
            line-height: 1.7;
        }
        .section-head .divider {
            width: 48px;
            height: 4px;
            border-radius: 4px;
            background: var(--gradient);
            margin: 18px auto 0;
        }

        /* ===== 导航 ===== */
        .custom-navbar {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 2px 20px rgba(8, 26, 46, .04);
            padding: 0;
            min-height: 72px;
        }
        .custom-navbar .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 0;
            margin: 0;
            font-weight: 700;
            font-size: 19px;
            color: var(--text-strong);
        }
        .custom-navbar .navbar-brand .brand-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 18px;
            box-shadow: var(--shadow-blue);
        }
        .custom-navbar .navbar-nav {
            gap: 4px;
            margin-left: auto;
            margin-right: auto;
        }
        .custom-navbar .nav-link {
            padding: 10px 18px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-body);
            border-radius: 50px;
            transition: var(--transition);
            position: relative;
        }
        .custom-navbar .nav-link:hover {
            color: var(--primary);
            background: var(--primary-100);
        }
        .custom-navbar .nav-link.active {
            color: var(--primary);
            background: var(--primary-100);
            font-weight: 600;
        }
        .custom-navbar .nav-actions {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .nav-search {
            position: relative;
            width: 210px;
        }
        .nav-search input {
            width: 100%;
            padding: 8px 38px 8px 16px;
            border: 1px solid var(--border);
            border-radius: 40px;
            background: var(--surface-2);
            font-size: 14px;
            color: var(--text-strong);
            transition: var(--transition);
        }
        .nav-search input:focus {
            border-color: var(--primary);
            background: var(--surface);
            box-shadow: 0 0 0 3px rgba(37, 102, 240, .12);
        }
        .nav-search .bi-search {
            position: absolute;
            right: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-weak);
            font-size: 14px;
            pointer-events: none;
        }
        .btn-nav-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 9px 22px;
            border-radius: 40px;
            background: var(--gradient);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: var(--shadow-blue);
            border: none;
        }
        .btn-nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(37, 102, 240, .3);
            color: #fff;
        }
        .navbar-toggler {
            border: none;
            padding: 4px 10px;
            background: transparent;
        }
        .navbar-toggler:focus {
            box-shadow: none;
        }
        .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 24px;
            height: 2px;
            background: var(--text-strong);
            border-radius: 2px;
        }
        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: '';
            position: absolute;
            left: 0;
            width: 24px;
            height: 2px;
            background: var(--text-strong);
            border-radius: 2px;
        }
        .navbar-toggler-icon::before {
            top: -7px;
        }
        .navbar-toggler-icon::after {
            top: 7px;
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 130px 0 110px;
            background: linear-gradient(135deg, rgba(6, 18, 35, .92), rgba(15, 42, 72, .78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            color: #fff;
            overflow: hidden;
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -180px;
            right: -100px;
            width: 480px;
            height: 480px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(37, 102, 240, .28), transparent 70%);
            pointer-events: none;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            left: -80px;
            width: 360px;
            height: 360px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(15, 181, 162, .2), transparent 70%);
            pointer-events: none;
        }
        .hero .container-cust {
            position: relative;
            z-index: 2;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 20px;
            border-radius: 40px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .18);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            backdrop-filter: blur(6px);
            margin-bottom: 26px;
        }
        .hero-badge .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: #22e6c4;
            box-shadow: 0 0 0 3px rgba(34, 230, 196, .3);
        }
        .hero h1 {
            font-size: 54px;
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -1px;
            margin-bottom: 20px;
            color: #fff;
        }
        .hero h1 .text-gradient {
            background: linear-gradient(120deg, #5ea2ff, #22e6c4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-desc {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            line-height: 1.8;
            max-width: 620px;
            margin-bottom: 36px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 56px;
        }
        .hero-stats {
            display: flex;
            gap: 36px;
            flex-wrap: wrap;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, .16);
        }
        .hero-stat-item .num {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            line-height: 1.2;
        }
        .hero-stat-item .num small {
            font-size: 17px;
            font-weight: 600;
            color: #22e6c4;
        }
        .hero-stat-item .label {
            font-size: 13px;
            color: rgba(255, 255, 255, .65);
            margin-top: 4px;
        }

        /* ===== 平台数据 ===== */
        .stats-section {
            padding: 80px 0 40px;
            background: var(--surface-2);
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 30px 26px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .stat-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--gradient);
            opacity: 0;
            transition: var(--transition);
        }
        .stat-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow);
        }
        .stat-card:hover::before {
            opacity: 1;
        }
        .stat-icon {
            width: 54px;
            height: 54px;
            margin: 0 auto 18px;
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: var(--primary);
            background: var(--primary-100);
        }
        .stat-card .number {
            font-size: 36px;
            font-weight: 800;
            color: var(--text-strong);
            line-height: 1.2;
            margin-bottom: 4px;
        }
        .stat-card .label {
            font-size: 14px;
            color: var(--text-weak);
        }

        /* ===== 核心功能 ===== */
        .features-section {
            padding: 70px 0;
            background: var(--surface);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            padding: 38px 32px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }
        .feature-card::after {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -60px;
            width: 130px;
            height: 130px;
            border-radius: 50%;
            background: var(--primary-100);
            opacity: .5;
            transition: var(--transition);
        }
        .feature-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow);
            border-color: rgba(37, 102, 240, .18);
        }
        .feature-card:hover::after {
            transform: scale(1.6);
        }
        .feature-icon {
            width: 62px;
            height: 62px;
            border-radius: 18px;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: #fff;
            margin-bottom: 22px;
            box-shadow: var(--shadow-blue);
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 12px;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-weak);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* ===== 分类入口 ===== */
        .category-section {
            padding: 90px 0;
            background: var(--surface-2);
        }
        .category-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }
        .category-card {
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--surface);
            border: 1px solid var(--border);
            transition: var(--transition);
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--shadow-lg);
        }
        .category-cover {
            height: 230px;
            overflow: hidden;
            position: relative;
        }
        .category-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .6s ease;
        }
        .category-card:hover .category-cover img {
            transform: scale(1.05);
        }
        .category-cover .cover-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(8, 26, 46, .45), transparent 60%);
        }
        .category-cover .cat-tag {
            position: absolute;
            top: 18px;
            left: 18px;
            padding: 5px 14px;
            border-radius: 30px;
            background: rgba(255, 255, 255, .9);
            color: var(--primary);
            font-size: 12px;
            font-weight: 700;
            backdrop-filter: blur(4px);
        }
        .category-info {
            padding: 28px 30px 30px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .category-info h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
        }
        .category-info p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 20px;
            flex: 1;
        }
        .category-info .cat-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-weight: 600;
            font-size: 14px;
            transition: var(--transition);
        }
        .category-info .cat-link:hover {
            gap: 12px;
            color: var(--primary-600);
        }

        /* ===== 最新资讯 ===== */
        .news-section {
            padding: 90px 0;
            background: var(--surface);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .news-item {
            background: var(--surface-2);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 30px;
            transition: var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-item:hover {
            background: var(--surface);
            border-color: rgba(37, 102, 240, .2);
            box-shadow: var(--shadow);
            transform: translateY(-4px);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .news-time {
            font-size: 13px;
            color: var(--text-weak);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-title {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
            line-height: 1.5;
        }
        .news-title a {
            color: inherit;
        }
        .news-title a:hover {
            color: var(--primary);
        }
        .news-desc {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .news-more {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .news-more:hover {
            gap: 8px;
            color: var(--primary-600);
        }
        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px;
            color: var(--text-weak);
            background: var(--surface-2);
            border-radius: var(--radius);
            border: 1px dashed var(--border);
            font-size: 15px;
        }

        /* ===== 平台特色 ===== */
        .advantage-section {
            padding: 90px 0;
            background: var(--dark);
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .advantage-section::before {
            content: '';
            position: absolute;
            top: -100px;
            right: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(37, 102, 240, .3), transparent 70%);
        }
        .advantage-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            position: relative;
            z-index: 2;
        }
        .advantage-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: 0 30px 60px rgba(0, 0, 0, .3);
        }
        .advantage-img img {
            width: 100%;
            height: 420px;
            object-fit: cover;
        }
        .advantage-content .section-head {
            text-align: left;
            margin-bottom: 32px;
            max-width: none;
        }
        .advantage-content .section-head h2 {
            color: #fff;
        }
        .advantage-content .section-head p {
            color: rgba(255, 255, 255, .7);
        }
        .advantage-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .advantage-item {
            display: flex;
            gap: 16px;
        }
        .advantage-item .adv-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(255, 255, 255, .1);
            border: 1px solid rgba(255, 255, 255, .14);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #5ea2ff;
            font-size: 18px;
            flex-shrink: 0;
        }
        .advantage-item h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }
        .advantage-item p {
            font-size: 14px;
            color: rgba(255, 255, 255, .65);
            line-height: 1.6;
            margin: 0;
        }

        /* ===== 使用流程 ===== */
        .process-section {
            padding: 90px 0;
            background: var(--surface-2);
        }
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            position: relative;
        }
        .process-grid::before {
            content: '';
            position: absolute;
            top: 48px;
            left: 12%;
            right: 12%;
            height: 2px;
            background: linear-gradient(to right, var(--primary), var(--accent));
            opacity: .25;
            z-index: 0;
        }
        .process-step {
            text-align: center;
            position: relative;
            z-index: 1;
            background: var(--surface-2);
            border-radius: var(--radius-lg);
            padding: 30px 20px;
            transition: var(--transition);
        }
        .process-step:hover {
            background: var(--surface);
            box-shadow: var(--shadow);
            transform: translateY(-6px);
        }
        .step-num {
            width: 96px;
            height: 96px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 28px;
            font-weight: 800;
            box-shadow: var(--shadow-blue);
            border: 5px solid var(--surface-2);
        }
        .process-step h3 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-strong);
            margin-bottom: 10px;
        }
        .process-step p {
            font-size: 14px;
            color: var(--text-weak);
            line-height: 1.65;
            margin: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 90px 0;
            background: var(--surface);
        }
        .faq-wrap {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius);
            background: var(--surface);
            overflow: hidden;
            transition: var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(37, 102, 240, .2);
            box-shadow: var(--shadow-sm);
        }
        .faq-q {
            width: 100%;
            text-align: left;
            padding: 20px 24px;
            background: transparent;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-strong);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            transition: var(--transition);
        }
        .faq-q .bi {
            color: var(--primary);
            font-size: 18px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .faq-q[aria-expanded="true"] .bi {
            transform: rotate(45deg);
        }
        .faq-q:hover {
            color: var(--primary);
        }
        .faq-a {
            padding: 0 24px 22px;
            font-size: 15px;
            color: var(--text-body);
            line-height: 1.75;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: 90px 0;
            background: var(--surface-2);
        }
        .cta-box {
            border-radius: 28px;
            padding: 70px 50px;
            background: linear-gradient(135deg, rgba(8, 26, 46, .94), rgba(15, 42, 72, .85)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            top: -80px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(37, 102, 240, .35), transparent 70%);
        }
        .cta-box h2 {
            font-size: 34px;
            font-weight: 800;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, .8);
            margin-bottom: 32px;
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            position: relative;
            z-index: 1;
        }
        .cta-box .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ===== Footer ===== */
        .footer {
            background: var(--dark);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 0;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 50px;
            padding-bottom: 50px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand .footer-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .footer-logo .brand-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: var(--gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .55);
            max-width: 320px;
            margin: 0;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links li a {
            font-size: 14px;
            color: rgba(255, 255, 255, .55);
            transition: var(--transition);
        }
        .footer-links li a:hover {
            color: #5ea2ff;
            padding-left: 4px;
        }
        .footer-contact li {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, .55);
            margin-bottom: 12px;
        }
        .footer-contact .bi {
            color: var(--accent);
        }
        .footer-bottom {
            padding: 24px 0;
            border-top: 1px solid rgba(255, 255, 255, .06);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .hero h1 {
                font-size: 44px;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .features-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid::before {
                display: none;
            }
            .footer-top {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .custom-navbar {
                min-height: 64px;
            }
            .custom-navbar .navbar-collapse {
                background: #fff;
                border-radius: 16px;
                padding: 16px;
                margin-top: 12px;
                box-shadow: var(--shadow);
                border: 1px solid var(--border);
            }
            .custom-navbar .navbar-nav {
                margin: 0 0 12px;
                gap: 2px;
            }
            .custom-navbar .nav-link {
                border-radius: 10px;
                padding: 10px 16px;
            }
            .custom-navbar .nav-actions {
                flex-wrap: wrap;
                width: 100%;
            }
            .nav-search {
                width: 100%;
            }
            .btn-nav-cta {
                width: 100%;
                justify-content: center;
            }
            .section-pad {
                padding: 70px 0;
            }
            .section-head h2 {
                font-size: 28px;
            }
            .hero {
                padding: 100px 0 80px;
            }
            .hero h1 {
                font-size: 34px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .hero-stats {
                gap: 20px;
            }
            .hero-stat-item .num {
                font-size: 24px;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .advantage-wrapper {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .advantage-img img {
                height: 280px;
            }
            .cta-box {
                padding: 50px 30px;
            }
            .cta-box h2 {
                font-size: 28px;
            }
            .footer-top {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }
        @media (max-width: 520px) {
            .container-cust {
                padding: 0 18px;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-card .number {
                font-size: 26px;
            }
            .features-grid {
                grid-template-columns: 1fr;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .news-item {
                padding: 22px 20px;
            }
            .hero h1 {
                font-size: 28px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-main,
            .hero-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
            .cta-actions {
                flex-direction: column;
            }
            .cta-actions .btn-main,
            .cta-actions .btn-outline-light {
                width: 100%;
                justify-content: center;
            }
        }
        @media (max-width: 360px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #1a4d8f;
    --primary-light: #2563eb;
    --secondary: #10b981;
    --dark: #0f172a;
    --text: #1e293b;
    --text-muted: #64748b;
    --bg: #f6f8fb;
    --bg-white: #ffffff;
    --border: #e2e8f0;
    --radius: 14px;
    --radius-lg: 20px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.10);
    --transition: all 0.3s ease;
}
* {
    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;
    background: var(--bg);
    color: var(--text);
    line-height: 1.75;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}
button,
input {
    font-family: inherit;
}
.container-cust {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}
/* ===== 导航 ===== */
.custom-navbar {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 16px rgba(15, 23, 42, 0.04);
    padding: 12px 0;
    position: sticky;
    top: 0;
    z-index: 1050;
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-right: 0;
}
.brand-icon {
    width: 42px;
    height: 42px;
    background: linear-gradient(135deg, #1a4d8f, #2563eb);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}
.brand-text {
    font-size: 22px;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: 0.5px;
    line-height: 1.2;
}
.navbar-nav {
    gap: 8px;
    margin: 0 auto;
}
.navbar-nav .nav-item {
    position: relative;
}
.navbar-nav .nav-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    padding: 8px 16px !important;
    border-radius: 8px;
    transition: var(--transition);
}
.navbar-nav .nav-link:hover {
    color: var(--primary);
    background: rgba(26, 77, 143, 0.06);
}
.navbar-nav .nav-link.active {
    color: var(--primary) !important;
    background: rgba(26, 77, 143, 0.08);
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 14px;
}
.nav-search {
    position: relative;
}
.nav-search input {
    width: 200px;
    padding: 9px 38px 9px 16px;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 14px;
    background: var(--bg);
    transition: var(--transition);
}
.nav-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(26, 77, 143, 0.12);
    background: #fff;
}
.nav-search i {
    position: absolute;
    right: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 14px;
    pointer-events: none;
}
.btn-nav-cta {
    background: linear-gradient(135deg, #1a4d8f, #2563eb);
    color: #fff !important;
    padding: 10px 22px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 14px;
    white-space: nowrap;
    box-shadow: 0 4px 14px rgba(26, 77, 143, 0.25);
    transition: var(--transition);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.btn-nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(26, 77, 143, 0.35);
    color: #fff;
}
.navbar-toggler {
    border: none;
    padding: 6px 8px;
    border-radius: 8px;
}
.navbar-toggler:focus {
    box-shadow: none;
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}
@media (min-width: 992px) {
    .navbar-collapse {
        display: flex;
        align-items: center;
        flex: 1;
        justify-content: space-between;
    }
    .navbar-nav {
        margin: 0 auto;
    }
}
@media (max-width: 991.98px) {
    .navbar-collapse {
        padding: 16px 0 8px;
        border-top: 1px solid var(--border);
        margin-top: 12px;
    }
    .navbar-nav {
        gap: 4px;
        margin-bottom: 16px;
    }
    .nav-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }
    .nav-search input {
        width: 100%;
    }
    .btn-nav-cta {
        text-align: center;
        justify-content: center;
    }
}
/* ===== Hero ===== */
.hero-section {
    position: relative;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(26, 77, 143, 0.78)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
    padding: 110px 0 96px;
    text-align: center;
    overflow: hidden;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    border-radius: 50px;
    padding: 6px 18px;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    margin-bottom: 24px;
    backdrop-filter: blur(6px);
}
.hero-badge i {
    color: #10b981;
}
.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
    margin-bottom: 18px;
    letter-spacing: 1px;
}
.hero-title span {
    color: #7dd3fc;
}
.hero-subtitle {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 680px;
    margin: 0 auto 32px;
    line-height: 1.8;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn-primary-cust {
    background: linear-gradient(135deg, #10b981, #0ea371);
    color: #fff !important;
    border: none;
    padding: 13px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 6px 18px rgba(16, 185, 129, 0.3);
    transition: var(--transition);
}
.btn-primary-cust:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.4);
    color: #fff;
}
.btn-outline-cust {
    background: transparent;
    color: #fff !important;
    border: 1.5px solid rgba(255, 255, 255, 0.6);
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}
.btn-outline-cust:hover {
    border-color: #fff;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}
.hero-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 56px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}
.stat-item {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 24px 16px;
    text-align: center;
    transition: var(--transition);
}
.stat-item:hover {
    background: rgba(255, 255, 255, 0.18);
    transform: translateY(-4px);
}
.stat-num {
    font-size: 40px;
    font-weight: 800;
    color: #fff;
    line-height: 1.2;
}
.stat-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    margin-top: 4px;
}
@media (max-width: 767.98px) {
    .hero-section {
        padding: 70px 0 60px;
    }
    .hero-title {
        font-size: 32px;
    }
    .hero-subtitle {
        font-size: 15px;
    }
    .hero-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
        margin-top: 36px;
    }
    .stat-num {
        font-size: 30px;
    }
}
/* ===== 通用板块 ===== */
.section {
    padding: 80px 0;
}
.section-alt {
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-tag {
    display: inline-block;
    padding: 5px 16px;
    border-radius: 50px;
    background: rgba(16, 185, 129, 0.12);
    color: #0f766e;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 12px;
}
.section-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.3;
    margin-bottom: 12px;
}
.section-desc {
    font-size: 15px;
    color: var(--text-muted);
    max-width: 640px;
    margin: 0 auto;
    line-height: 1.8;
}
@media (max-width: 767.98px) {
    .section {
        padding: 56px 0;
    }
    .section-title {
        font-size: 26px;
    }
}
/* ===== 步骤流程 ===== */
.step-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 28px;
    text-align: center;
    height: 100%;
    position: relative;
    transition: var(--transition);
}
.step-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
    border-color: rgba(26, 77, 143, 0.2);
}
.step-num {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #1a4d8f, #2563eb);
    border-radius: 14px;
    color: #fff;
    font-size: 22px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    box-shadow: 0 6px 16px rgba(26, 77, 143, 0.25);
}
.step-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}
.step-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 0;
}
/* ===== 推荐游戏卡片 ===== */
.category-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.category-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
    border-color: rgba(26, 77, 143, 0.15);
}
.category-card .card-img-wrap {
    overflow: hidden;
    position: relative;
    height: 220px;
}
.category-card .card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.category-card:hover .card-img-wrap img {
    transform: scale(1.05);
}
.category-card .card-img-wrap::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(15, 23, 42, 0.3));
}
.category-body {
    padding: 26px 24px;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.category-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 14px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
    background: rgba(16, 185, 129, 0.12);
    color: #0f766e;
    margin-bottom: 12px;
    width: fit-content;
}
.category-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}
.category-desc {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 16px;
    flex: 1;
}
.category-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
}
.category-link i {
    transition: transform 0.3s;
}
.category-link:hover i {
    transform: translateX(4px);
}
/* ===== 数据看板 ===== */
.dashboard-section {
    background: linear-gradient(135deg, #0f172a, #1a4d8f);
    color: #fff;
    padding: 80px 0;
}
.dashboard-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    height: 100%;
    transition: var(--transition);
}
.dashboard-card:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-4px);
}
.dash-icon {
    font-size: 32px;
    color: #34d399;
    margin-bottom: 14px;
}
.dash-num {
    font-size: 42px;
    font-weight: 800;
    line-height: 1.2;
}
.dash-label {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    margin-top: 6px;
}
.dash-tip {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 4px;
}
@media (max-width: 767.98px) {
    .dashboard-section {
        padding: 56px 0;
    }
    .dash-num {
        font-size: 30px;
    }
}
/* ===== 安全与会员 ===== */
.feature-panel {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 40px;
    height: 100%;
    box-shadow: var(--shadow);
    transition: var(--transition);
}
.feature-panel:hover {
    box-shadow: var(--shadow-lg);
}
.feature-panel h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.feature-panel h3 i {
    color: var(--primary);
    font-size: 28px;
}
.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px dashed var(--border);
    font-size: 15px;
    line-height: 1.6;
}
.feature-list li:last-child {
    border-bottom: none;
}
.feature-list li i {
    color: #10b981;
    font-size: 18px;
    margin-top: 2px;
    flex-shrink: 0;
}
/* ===== FAQ ===== */
.faq-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px;
    margin-bottom: 16px;
    transition: var(--transition);
}
.faq-card:hover {
    box-shadow: var(--shadow);
    border-color: rgba(26, 77, 143, 0.2);
}
.faq-q {
    font-weight: 700;
    font-size: 17px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}
.faq-q .faq-icon {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: rgba(26, 77, 143, 0.1);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}
.faq-a {
    font-size: 15px;
    color: var(--text);
    line-height: 1.8;
    padding-left: 46px;
}
/* ===== CTA ===== */
.cta-section {
    position: relative;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.88), rgba(26, 77, 143, 0.8)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 90px 0;
    text-align: center;
    color: #fff;
}
.cta-title {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 14px;
}
.cta-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 580px;
    margin: 0 auto 32px;
    line-height: 1.8;
}
.btn-cta-green {
    background: linear-gradient(135deg, #10b981, #0ea371);
    color: #fff !important;
    border: none;
    padding: 15px 40px;
    border-radius: 50px;
    font-weight: 700;
    font-size: 16px;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.35);
    transition: var(--transition);
}
.btn-cta-green:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 32px rgba(16, 185, 129, 0.45);
    color: #fff;
}
@media (max-width: 767.98px) {
    .cta-section {
        padding: 60px 0;
    }
    .cta-title {
        font-size: 26px;
    }
}
/* ===== 页脚 ===== */
.footer {
    background: #0f172a;
    color: rgba(255, 255, 255, 0.7);
    padding: 72px 0 0;
}
.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1.2fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.6);
    max-width: 420px;
}
.footer h4 {
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 20px;
}
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links li {
    margin-bottom: 12px;
    font-size: 14px;
    display: flex;
    align-items: flex-start;
    gap: 8px;
}
.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}
.footer-links a:hover {
    color: #10b981;
    padding-left: 4px;
}
.footer-links i {
    color: #10b981;
}
.footer-contact li {
    color: rgba(255, 255, 255, 0.7);
}
.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.5);
}
@media (max-width: 991.98px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }
}
@media (max-width: 575.98px) {
    .footer-top {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}
/* ===== 通用工具 ===== */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.text-center { text-align: center; }

/* roulang page: article */
:root {
    --primary: #0b6e72;
    --primary-dark: #09565a;
    --primary-light: #e6f2f2;
    --accent: #1d8cf0;
    --accent-light: #eaf3fc;
    --bg: #f6f9fb;
    --bg-soft: #f0f5f8;
    --text-main: #1c2b3a;
    --text-muted: #5f7184;
    --border: #dee8f0;
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --shadow-sm: 0 2px 8px rgba(12, 40, 55, 0.06);
    --shadow-md: 0 8px 24px rgba(12, 40, 55, 0.08);
    --shadow-lg: 0 16px 40px rgba(12, 40, 55, 0.12);
    --transition: all 0.25s ease;
    --font-main: "Inter", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.75;
    color: var(--text-main);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
.container-cust {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* 按钮 */
.btn-main,
.btn-outline,
.btn-light-solid {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    line-height: 1.4;
    transition: var(--transition);
    border: 2px solid transparent;
    cursor: pointer;
    white-space: nowrap;
}
.btn-main {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 18px rgba(11, 110, 114, 0.24);
}
.btn-main:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(11, 110, 114, 0.3);
}
.btn-main:active { transform: translateY(0); }
.btn-outline {
    border-color: var(--primary);
    color: var(--primary);
    background: transparent;
}
.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(11, 110, 114, 0.2);
}
.btn-light-solid {
    background: #fff;
    color: var(--primary-dark);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}
.btn-light-solid:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.12);
}
.btn-nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 20px;
    border-radius: 50px;
    background: var(--primary);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(11, 110, 114, 0.2);
    white-space: nowrap;
}
.btn-nav-cta:hover {
    background: var(--primary-dark);
    color: #fff;
    box-shadow: 0 8px 18px rgba(11, 110, 114, 0.28);
    transform: translateY(-1px);
}
.btn-nav-cta:focus-visible,
.btn-main:focus-visible,
.btn-outline:focus-visible,
.btn-light-solid:focus-visible,
.accordion-button:focus-visible {
    outline: 3px solid rgba(29, 140, 240, 0.45);
    outline-offset: 2px;
}

/* 导航 */
.custom-navbar {
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(222, 232, 240, 0.8);
    box-shadow: 0 2px 12px rgba(12, 40, 55, 0.04);
    padding: 14px 0;
    position: sticky;
    top: 0;
    z-index: 1050;
}
.custom-navbar .navbar-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 0;
    margin: 0;
}
.brand-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), #159a93);
    color: #fff;
    font-size: 19px;
    box-shadow: 0 4px 12px rgba(11, 110, 114, 0.3);
}
.brand-text {
    font-size: 21px;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: 0.5px;
}
.custom-navbar .navbar-nav {
    gap: 4px;
    margin-left: 32px;
}
.custom-navbar .nav-link {
    padding: 9px 18px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    transition: var(--transition);
    position: relative;
}
.custom-navbar .nav-link:hover {
    color: var(--primary);
    background: var(--primary-light);
}
.custom-navbar .nav-link.active {
    color: var(--primary-dark);
    background: var(--primary-light);
    font-weight: 700;
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-left: auto;
}
.nav-search {
    position: relative;
    display: flex;
    align-items: center;
}
.nav-search input {
    width: 220px;
    padding: 9px 14px 9px 40px;
    border: 1px solid var(--border);
    border-radius: 50px;
    background: var(--bg-soft);
    font-size: 14px;
    color: var(--text-main);
    transition: var(--transition);
}
.nav-search input::placeholder { color: #9aabb8; }
.nav-search input:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(11, 110, 114, 0.1);
}
.nav-search i {
    position: absolute;
    left: 15px;
    color: var(--text-muted);
    font-size: 14px;
    pointer-events: none;
}

/* 文章首屏 */
.article-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover;
    background-position: center;
    padding: 76px 0 68px;
    color: #fff;
}
.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(100deg, rgba(7, 43, 52, 0.92) 0%, rgba(8, 58, 66, 0.78) 46%, rgba(11, 110, 114, 0.5) 100%);
}
.article-hero .container-cust { position: relative; z-index: 2; }
.breadcrumb-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 22px;
}
.breadcrumb-nav a { color: rgba(255, 255, 255, 0.82); transition: var(--transition); }
.breadcrumb-nav a:hover { color: #fff; }
.breadcrumb-nav i { font-size: 11px; color: rgba(255, 255, 255, 0.5); }
.breadcrumb-nav span { color: #fff; font-weight: 600; }
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 16px;
    border-radius: 50px;
    background: rgba(255, 255, 255, 0.16);
    border: 1px solid rgba(255, 255, 255, 0.25);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.4px;
    backdrop-filter: blur(6px);
    margin-bottom: 18px;
}
.article-hero h1 {
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 800;
    line-height: 1.28;
    margin: 0 0 14px;
    max-width: 860px;
    letter-spacing: 0.3px;
}
.hero-lead {
    font-size: 16px;
    line-height: 1.85;
    color: rgba(255, 255, 255, 0.88);
    max-width: 780px;
    margin: 0 0 22px;
}
.hero-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
}
.hero-meta span { display: inline-flex; align-items: center; gap: 6px; }
.hero-meta i { color: rgba(255, 255, 255, 0.7); }

/* 文章主体 */
.article-section { padding: 56px 0 64px; }
.article-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 40px 40px 32px;
    transition: var(--transition);
}
.article-card:hover { box-shadow: var(--shadow-md); }
.article-body {
    font-size: 16px;
    line-height: 1.95;
    color: #2e4152;
}
.article-body p { margin-bottom: 1.3em; }
.article-body h2 {
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 1.6em 0 0.8em;
    padding-left: 14px;
    border-left: 4px solid var(--primary);
    line-height: 1.4;
}
.article-body h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 1.4em 0 0.7em;
}
.article-body img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    margin: 1.4em 0;
    width: 100%;
    object-fit: cover;
}
.article-body ul {
    list-style: disc;
    padding-left: 1.5em;
    margin-bottom: 1.3em;
}
.article-body ol {
    list-style: decimal;
    padding-left: 1.5em;
    margin-bottom: 1.3em;
}
.article-body li { margin-bottom: 0.5em; }
.article-body blockquote {
    background: var(--primary-light);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 16px 22px;
    margin: 1.4em 0;
    color: var(--primary-dark);
    font-weight: 500;
}
.article-body a { color: var(--accent); font-weight: 500; }
.article-body a:hover { color: var(--primary); text-decoration: underline; }
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding-top: 24px;
    margin-top: 28px;
    border-top: 1px solid var(--border);
}
.tag-item {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 6px 16px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 13px;
    color: var(--text-muted);
    transition: var(--transition);
}
.tag-item:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
}
.tag-item i { font-size: 12px; }
.article-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    padding-top: 24px;
    margin-top: 20px;
    border-top: 1px solid var(--border);
}
.not-found-panel {
    text-align: center;
    padding: 60px 30px;
}
.not-found-panel .icon-big {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 84px;
    height: 84px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 38px;
    margin-bottom: 20px;
}
.not-found-panel h3 {
    font-size: 26px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 10px;
}
.not-found-panel p {
    color: var(--text-muted);
    margin-bottom: 26px;
    font-size: 16px;
}

/* 侧边栏 */
.sidebar-sticky {
    position: sticky;
    top: 110px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.sidebar-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 26px;
    transition: var(--transition);
}
.sidebar-card:hover { box-shadow: var(--shadow-md); }
.sidebar-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 2px solid var(--primary-light);
}
.sidebar-title i {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: var(--primary-light);
    color: var(--primary);
    font-size: 16px;
}
.sidebar-text { font-size: 14px; color: var(--text-muted); line-height: 1.85; margin-bottom: 16px; }
.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 0;
    font-size: 14px;
    color: var(--text-main);
    border-bottom: 1px dashed var(--border);
}
.feature-list li:last-child { border-bottom: none; }
.feature-list li i { color: var(--primary); margin-top: 3px; }
.side-cat-list li { margin-bottom: 10px; }
.side-cat-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: var(--bg-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-main);
    transition: var(--transition);
}
.side-cat-list a:hover {
    background: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
    transform: translateX(4px);
}
.side-cat-list a i { color: var(--primary); font-size: 16px; }
.side-cat-list a span { margin-left: auto; font-size: 12px; color: var(--text-muted); }
.sidebar-banner {
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    background-image: url('/assets/images/backpic/back-3.png');
    background-size: cover;
    background-position: center;
    padding: 28px 24px;
    color: #fff;
    min-height: 180px;
    box-shadow: var(--shadow-md);
}
.sidebar-banner::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(7, 43, 52, 0.88), rgba(11, 110, 114, 0.6));
    border-radius: var(--radius-lg);
}
.sidebar-banner > * { position: relative; z-index: 1; }
.sidebar-banner h4 { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.sidebar-banner p { font-size: 13px; color: rgba(255, 255, 255, 0.88); margin-bottom: 16px; }

/* 相关推荐 */
.related-section {
    background: var(--bg-white);
    padding: 64px 0;
    border-top: 1px solid var(--border);
}
.section-head { text-align: center; margin-bottom: 42px; }
.section-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 18px;
    background: var(--primary-light);
    color: var(--primary-dark);
    border-radius: 50px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 14px;
}
.section-head h2 {
    font-size: clamp(24px, 3vw, 34px);
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 10px;
    letter-spacing: 0.3px;
}
.section-head p {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 640px;
    margin: 0 auto;
}
.related-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.related-card .thumb {
    position: relative;
    overflow: hidden;
    aspect-ratio: 16 / 10;
}
.related-card .thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}
.related-card:hover .thumb img { transform: scale(1.06); }
.related-card .thumb-badge {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    padding: 5px 14px;
    background: rgba(11, 110, 114, 0.92);
    color: #fff;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    backdrop-filter: blur(4px);
}
.related-card .card-content {
    padding: 22px 22px 24px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}
.related-card h3 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    color: var(--text-main);
    margin: 0;
    transition: var(--transition);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.related-card h3 a:hover { color: var(--primary); }
.related-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    margin: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.card-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 13px;
    color: var(--text-muted);
    margin-top: auto;
    padding-top: 12px;
    border-top: 1px dashed var(--border);
}
.card-meta span { display: inline-flex; align-items: center; gap: 5px; }
.card-meta i { color: var(--primary); font-size: 12px; }
.card-link-more {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
    transition: var(--transition);
}
.card-link-more:hover { color: var(--primary-dark); gap: 10px; }

/* FAQ */
.faq-section {
    padding: 64px 0 60px;
    background: var(--bg);
}
.faq-wrap { max-width: 860px; margin: 0 auto; }
.accordion-item {
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 14px;
    overflow: hidden;
    background: #fff;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}
.accordion-item:hover { box-shadow: var(--shadow-md); }
.accordion-button {
    font-size: 15px !important;
    font-weight: 600 !important;
    color: var(--text-main) !important;
    padding: 18px 22px !important;
    background: #fff !important;
}
.accordion-button:not(.collapsed) {
    background: var(--primary-light) !important;
    color: var(--primary-dark) !important;
    box-shadow: none !important;
}
.accordion-button::after {
    background-image: none !important;
    content: "\F64D";
    font-family: "bootstrap-icons";
    font-size: 16px;
    color: var(--primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease;
}
.accordion-button:not(.collapsed)::after { transform: rotate(180deg); }
.accordion-body {
    padding: 16px 22px 20px !important;
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.85;
    background: #fff;
}

/* CTA */
.cta-section {
    position: relative;
    padding: 72px 0;
    background-image: url('/assets/images/backpic/back-1.png');
    background-size: cover;
    background-position: center;
    color: #fff;
    text-align: center;
}
.cta-section::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(120deg, rgba(7, 43, 52, 0.94), rgba(11, 110, 114, 0.82));
}
.cta-section .container-cust { position: relative; z-index: 2; }
.cta-section h2 {
    font-size: clamp(24px, 3.4vw, 36px);
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}
.cta-section p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 660px;
    margin: 0 auto 32px;
    line-height: 1.85;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
}

/* 页脚 */
.footer {
    background: #0a2530;
    color: rgba(255, 255, 255, 0.78);
    padding: 56px 0 30px;
    font-size: 14px;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 36px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 20px;
    font-weight: 800;
    color: #fff;
    margin-bottom: 14px;
}
.footer-brand p {
    color: rgba(255, 255, 255, 0.62);
    line-height: 1.85;
    margin: 0;
    max-width: 420px;
}
.footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
    color: rgba(255, 255, 255, 0.66);
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.footer-links a:hover { color: #fff; padding-left: 4px; }
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.66);
    margin-bottom: 10px;
}
.footer-contact i { color: var(--primary); font-size: 15px; }
.footer-bottom {
    text-align: center;
    padding-top: 28px;
    color: rgba(255, 255, 255, 0.45);
    font-size: 13px;
}

/* 响应式 */
@media (max-width: 1199.98px) {
    .custom-navbar .navbar-nav { margin-left: 12px; }
    .nav-search input { width: 170px; }
}
@media (max-width: 991.98px) {
    .custom-navbar { padding: 12px 0; }
    .custom-navbar .navbar-nav {
        margin-left: 0;
        margin-top: 14px;
        gap: 4px;
    }
    .custom-navbar .nav-link { padding: 10px 14px; }
    .nav-actions {
        margin-left: 0;
        margin-top: 12px;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding-top: 12px;
        border-top: 1px solid var(--border);
    }
    .nav-search input { width: 100%; }
    .btn-nav-cta { justify-content: center; }
    .article-card { padding: 28px 24px 24px; }
    .sidebar-sticky { position: static; margin-top: 30px; }
    .footer-top { grid-template-columns: 1fr; gap: 28px; }
}
@media (max-width: 767.98px) {
    .article-hero { padding: 52px 0 46px; }
    .hero-meta { gap: 12px; }
    .article-section { padding: 40px 0 48px; }
    .card-meta { flex-wrap: wrap; gap: 8px 14px; }
    .cta-buttons .btn-main,
    .cta-buttons .btn-light-solid { width: 100%; }
}
@media (max-width: 575.98px) {
    .container-cust { padding-left: 16px; padding-right: 16px; }
    .brand-text { font-size: 18px; }
    .brand-icon { width: 36px; height: 36px; font-size: 16px; }
    .article-card { padding: 22px 16px 20px; border-radius: var(--radius-md); }
    .article-body { font-size: 15px; line-height: 1.9; }
    .article-body h2 { font-size: 1.3rem; }
    .article-actions { flex-direction: column; }
    .article-actions .btn-main,
    .article-actions .btn-outline { width: 100%; }
    .related-card .card-content { padding: 18px 16px 20px; }
    .related-card h3 { font-size: 16px; }
    .sidebar-card { padding: 20px 16px; }
    .breadcrumb-nav { font-size: 12px; }
}

/* 统一点击态 */
a:active, button:active { transform: scale(0.98); }
.related-card a:active, .side-cat-list a:active, .accordion-button:active { transform: none; }

/* roulang page: category2 */
:root {
  --primary: #1e5eff;
  --primary-dark: #0d3fd6;
  --primary-soft: #eaf1ff;
  --accent: #0ea5a0;
  --accent-soft: #e6faf8;
  --ink: #10213a;
  --ink-soft: #5a6b84;
  --bg: #f6f8fc;
  --card: #ffffff;
  --line: #e6ebf2;
  --dark-bg: #0e1b2e;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 2px 10px rgba(16, 33, 58, 0.04);
  --shadow-md: 0 10px 30px rgba(16, 33, 58, 0.07);
  --shadow-lg: 0 20px 50px rgba(16, 33, 58, 0.10);
}

*, *::before, *::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  display: block;
}
button, input {
  font-family: inherit;
}
.container-cust {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header / Nav ---------- */
.custom-navbar {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 1080;
  box-shadow: 0 1px 8px rgba(16, 33, 58, 0.04);
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0;
  margin: 0;
}
.brand-icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
  border-radius: 12px;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 6px 16px rgba(30, 94, 255, 0.28);
}
.brand-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.navbar-toggler {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 6px 10px;
}
.navbar-toggler:focus {
  box-shadow: none;
  border-color: var(--primary);
}
.navbar-nav {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0 auto;
}
.navbar-nav .nav-link {
  font-weight: 600;
  color: var(--ink-soft);
  padding: 10px 18px;
  border-radius: 10px;
  transition: all 0.25s ease;
  font-size: 15px;
  white-space: nowrap;
}
.navbar-nav .nav-link:hover {
  color: var(--primary);
  background: var(--primary-soft);
}
.navbar-nav .nav-link.active {
  color: var(--primary);
  background: var(--primary-soft);
  font-weight: 700;
}
.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}
.nav-search {
  position: relative;
}
.nav-search input {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 50px;
  height: 40px;
  width: 220px;
  padding: 0 42px 0 16px;
  font-size: 14px;
  outline: none;
  transition: all 0.25s;
  color: var(--ink);
}
.nav-search input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(30, 94, 255, 0.12);
  background: #fff;
}
.nav-search i {
  position: absolute;
  right: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-soft);
  pointer-events: none;
}
.btn-nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--primary);
  color: #fff !important;
  font-weight: 600;
  font-size: 14px;
  border-radius: 50px;
  padding: 10px 20px;
  transition: all 0.25s ease;
  box-shadow: 0 6px 16px rgba(30, 94, 255, 0.25);
  white-space: nowrap;
}
.btn-nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px rgba(30, 94, 255, 0.32);
  color: #fff !important;
}

/* ---------- Page Banner ---------- */
.page-banner {
  position: relative;
  padding: 90px 0 80px;
  color: #fff;
  overflow: hidden;
  background-color: var(--dark-bg);
  border-bottom: 4px solid rgba(30, 94, 255, 0.25);
}
.page-banner-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}
.page-banner-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(10, 20, 40, 0.88) 0%, rgba(16, 33, 58, 0.72) 55%, rgba(20, 91, 164, 0.45) 100%);
}
.banner-content {
  position: relative;
  z-index: 2;
}
.banner-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1px;
  color: #d9e6ff;
}
.banner-content h1 {
  font-size: 42px;
  font-weight: 800;
  margin: 20px 0 14px;
  letter-spacing: 1px;
  line-height: 1.2;
}
.banner-content p {
  font-size: 17px;
  opacity: 0.85;
  max-width: 660px;
  line-height: 1.75;
  margin-bottom: 0;
}
.banner-stats {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 32px;
}
.banner-stat {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 14px;
  padding: 14px 22px;
  min-width: 120px;
}
.banner-stat .num {
  font-size: 26px;
  font-weight: 800;
  color: #fff;
  display: block;
  line-height: 1.2;
}
.banner-stat .label {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.75);
}

/* ---------- Channel Intro ---------- */
.channel-intro {
  padding: 40px 0 20px;
}
.intro-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  box-shadow: var(--shadow-sm);
}
.intro-text h2 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--ink);
}
.intro-text p {
  color: var(--ink-soft);
  font-size: 15px;
  line-height: 1.75;
  margin: 0;
  max-width: 640px;
}
.intro-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.intro-tags span {
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 600;
  font-size: 13px;
  padding: 8px 16px;
  border-radius: 50px;
  border: 1px solid rgba(30, 94, 255, 0.1);
  white-space: nowrap;
}

/* ---------- Section Head ---------- */
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 16px;
}
.section-kicker {
  display: block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--primary);
  text-transform: uppercase;
  margin-bottom: 6px;
}
.section-head h2 {
  font-size: 30px;
  font-weight: 800;
  color: var(--ink);
  margin: 0;
  line-height: 1.2;
}
.section-link {
  color: var(--ink-soft);
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-bottom: 2px solid transparent;
  padding-bottom: 4px;
  transition: all 0.25s;
  font-size: 14px;
  white-space: nowrap;
}
.section-link:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ---------- News Section ---------- */
.news-section {
  padding: 30px 0 60px;
}
.news-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  height: 100%;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: #dbe4f0;
}
.news-card-img {
  position: relative;
  height: 190px;
  overflow: hidden;
}
.news-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.news-card:hover .news-card-img img {
  transform: scale(1.05);
}
.news-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  background: rgba(16, 33, 58, 0.82);
  backdrop-filter: blur(6px);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 50px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}
.news-card-body {
  padding: 22px 22px 20px;
}
.news-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--ink-soft);
  margin-bottom: 10px;
}
.news-meta i {
  margin-right: 4px;
}
.news-card-body h3 {
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.45;
  margin-bottom: 10px;
}
.news-card-body h3 a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s;
}
.news-card-body h3 a:hover {
  color: var(--primary);
}
.news-card-body p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ---------- Hot Section ---------- */
.hot-section {
  padding: 50px 0 60px;
  background: linear-gradient(180deg, var(--bg) 0%, #eef2f9 100%);
}
.data-panel {
  background: linear-gradient(145deg, #0b1a33 0%, #14294d 100%);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  color: #fff;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
  box-shadow: var(--shadow-lg);
}
.data-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 18px;
}
.data-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}
.data-item > i {
  font-size: 26px;
  color: rgba(255, 255, 255, 0.4);
}
.data-num {
  font-size: 34px;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
}
.data-num small {
  font-size: 16px;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.7);
}
.data-label {
  color: rgba(255, 255, 255, 0.8);
  font-size: 14px;
  margin-top: 2px;
}
.hot-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}
.hot-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}
.hot-card-img {
  height: 240px;
  overflow: hidden;
  position: relative;
}
.hot-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.hot-card:hover .hot-card-img img {
  transform: scale(1.04);
}
.hot-card-body {
  padding: 28px;
  flex: 1;
}
.hot-badge {
  display: inline-block;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 700;
  font-size: 12px;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.hot-card-body h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
  margin-bottom: 12px;
  line-height: 1.4;
}
.hot-card-body p {
  color: var(--ink-soft);
  line-height: 1.75;
  font-size: 15px;
  margin-bottom: 0;
}
.hot-meta {
  display: flex;
  gap: 18px;
  margin-top: 20px;
  font-size: 14px;
  color: var(--ink-soft);
}
.hot-meta i {
  margin-right: 5px;
  color: var(--primary);
}

/* ---------- Announce ---------- */
.announce-section {
  padding: 70px 0;
}
.announce-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}
.announce-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 30px;
  border-bottom: 1px solid var(--line);
  transition: background 0.25s;
  text-decoration: none;
}
.announce-item:last-child {
  border-bottom: 0;
}
.announce-item:hover {
  background: #f8faff;
}
.announce-date {
  background: var(--primary-soft);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  border-radius: 50px;
  white-space: nowrap;
  font-family: "SF Mono", "Consolas", monospace;
}
.announce-title {
  color: var(--ink);
  font-weight: 600;
  font-size: 15px;
  flex: 1;
}
.announce-arrow {
  color: var(--ink-soft);
  transition: all 0.25s;
}
.announce-item:hover .announce-arrow {
  color: var(--primary);
  transform: translateX(4px);
}

/* ---------- Feature ---------- */
.feature-section {
  padding: 0 0 70px;
}
.feature-main {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  height: 380px;
  display: block;
  color: #fff;
  text-decoration: none;
  box-shadow: var(--shadow-md);
}
.feature-main img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.feature-main:hover img {
  transform: scale(1.04);
}
.feature-mask {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(6, 16, 32, 0.88) 0%, rgba(6, 16, 32, 0.1) 65%);
}
.feature-text {
  position: absolute;
  left: 28px;
  right: 28px;
  bottom: 24px;
}
.feature-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.18);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 12px;
}
.feature-text h3 {
  font-size: 22px;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.4;
}
.feature-text p {
  font-size: 14px;
  opacity: 0.85;
  margin-bottom: 0;
  max-width: 480px;
}
.feature-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 12px;
  text-decoration: none;
  transition: all 0.3s;
  flex: 1;
  box-shadow: var(--shadow-sm);
}
.feature-card:hover {
  border-color: #d0dcf2;
  box-shadow: var(--shadow-md);
  transform: translateX(4px);
}
.feature-card img {
  width: 90px;
  height: 74px;
  border-radius: 12px;
  object-fit: cover;
  flex-shrink: 0;
}
.feature-card-body h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
  line-height: 1.3;
}
.feature-card-body p {
  font-size: 13px;
  color: var(--ink-soft);
  margin: 0;
}

/* ---------- FAQ ---------- */
.faq-section {
  padding: 70px 0;
  background: var(--bg);
}
.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}
.faq-item {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  transition: all 0.3s;
  box-shadow: var(--shadow-sm);
}
.faq-item:hover {
  border-color: #d0dcf0;
  box-shadow: var(--shadow-md);
}
.faq-item h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-item h3 i {
  color: var(--primary);
  font-size: 18px;
}
.faq-item p {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.75;
  margin: 0;
}

/* ---------- CTA ---------- */
.cta-section {
  padding: 60px 0 90px;
}
.cta-box {
  background: linear-gradient(120deg, #13294d 0%, #1d4ed8 100%);
  border-radius: var(--radius-xl);
  padding: 56px 48px;
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-box::before {
  content: "";
  position: absolute;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.06);
  top: -120px;
  right: -80px;
}
.cta-box::after {
  content: "";
  position: absolute;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  bottom: -70px;
  left: -40px;
}
.cta-box h2 {
  font-size: 28px;
  font-weight: 800;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.cta-box p {
  opacity: 0.85;
  max-width: 620px;
  margin: 0 auto 28px;
  font-size: 16px;
  position: relative;
  z-index: 1;
}
.cta-btns {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.btn-cta-light {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
  border-radius: 50px;
  padding: 13px 32px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s;
  font-size: 15px;
  border: none;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}
.btn-cta-light:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.2);
  color: var(--primary);
}
.btn-cta-ghost {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: #fff;
  font-weight: 600;
  border-radius: 50px;
  padding: 13px 32px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.25s;
  font-size: 15px;
}
.btn-cta-ghost:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.5);
  color: #fff;
}

/* ---------- Footer ---------- */
.footer {
  background: #0e1b2e;
  color: #9fb0c5;
  padding: 60px 0 0;
}
.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}
.footer-logo .brand-icon {
  width: 38px;
  height: 38px;
  font-size: 18px;
}
.footer-logo span:last-child {
  font-size: 18px;
  font-weight: 700;
  color: #fff;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #9fb0c5;
  margin: 0;
  max-width: 360px;
}
.footer h4 {
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
}
.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}
.footer-links li {
  margin-bottom: 10px;
}
.footer-links a {
  color: #9fb0c5;
  font-size: 14px;
  text-decoration: none;
  transition: color 0.25s;
}
.footer-links a:hover {
  color: var(--primary);
}
.footer-contact li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #9fb0c5;
}
.footer-contact i {
  color: var(--primary);
}
.footer-bottom {
  text-align: center;
  padding: 22px 0;
  font-size: 13px;
  color: #7b8ca3;
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .nav-search input {
    width: 180px;
  }
  .banner-content h1 {
    font-size: 36px;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 991.98px) {
  .container-cust {
    padding: 0 20px;
  }
  .custom-navbar {
    padding: 12px 0;
  }
  .navbar-collapse {
    margin-top: 14px;
    padding-top: 16px;
    border-top: 1px solid var(--line);
  }
  .navbar-nav {
    flex-direction: column;
    align-items: stretch;
    margin: 0 0 16px;
    gap: 4px;
  }
  .navbar-nav .nav-link {
    padding: 12px 14px;
    border-radius: 10px;
  }
  .nav-actions {
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
  }
  .nav-search {
    width: 100%;
  }
  .nav-search input {
    width: 100%;
  }
  .btn-nav-cta {
    justify-content: center;
  }
  .page-banner {
    padding: 60px 0 56px;
  }
  .banner-content h1 {
    font-size: 32px;
  }
  .intro-card {
    padding: 28px;
  }
  .section-head h2 {
    font-size: 26px;
  }
  .faq-grid {
    grid-template-columns: 1fr;
  }
  .feature-main {
    height: 300px;
  }
}
@media (max-width: 768px) {
  .container-cust {
    padding: 0 16px;
  }
  .banner-content h1 {
    font-size: 28px;
  }
  .banner-content p {
    font-size: 15px;
  }
  .banner-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    width: 100%;
  }
  .banner-stat {
    min-width: 0;
    text-align: center;
    padding: 14px 12px;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    margin-bottom: 24px;
  }
  .news-card-img {
    height: 170px;
  }
  .hot-card-img {
    height: 190px;
  }
  .data-panel {
    padding: 24px 20px;
  }
  .data-num {
    font-size: 28px;
  }
  .cta-box {
    padding: 40px 24px;
  }
  .cta-box h2 {
    font-size: 24px;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .intro-card {
    flex-direction: column;
    align-items: flex-start;
  }
}
@media (max-width: 520px) {
  .container-cust {
    padding: 0 14px;
  }
  .brand-text {
    font-size: 16px;
  }
  .brand-icon {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }
  .page-banner {
    padding: 48px 0 44px;
  }
  .banner-content h1 {
    font-size: 24px;
  }
  .banner-tag {
    font-size: 12px;
    padding: 6px 14px;
  }
  .banner-stat .num {
    font-size: 22px;
  }
  .section-head h2 {
    font-size: 22px;
  }
  .news-card-img {
    height: 150px;
  }
  .hot-card-body {
    padding: 20px;
  }
  .hot-card-body h3 {
    font-size: 18px;
  }
  .announce-item {
    padding: 16px 18px;
    flex-wrap: wrap;
    gap: 10px;
  }
  .announce-title {
    width: 100%;
    order: 2;
  }
  .announce-arrow {
    display: none;
  }
  .feature-card {
    flex-direction: column;
    align-items: flex-start;
  }
  .feature-card img {
    width: 100%;
    height: 130px;
  }
  .feature-text h3 {
    font-size: 18px;
  }
  .cta-btns {
    flex-direction: column;
    align-items: stretch;
  }
  .btn-cta-light,
  .btn-cta-ghost {
    justify-content: center;
  }
  .faq-item {
    padding: 20px;
  }
  .footer-bottom {
    font-size: 12px;
  }
}