/* roulang page: index */
:root {
            --primary: #0b7868;
            --primary-dark: #085c51;
            --primary-light: #e0f2ee;
            --accent: #f5a623;
            --accent-light: #fef3d9;
            --bg: #f7f9f8;
            --bg-white: #ffffff;
            --bg-deep: #0d2b28;
            --text: #1e2a32;
            --text-muted: #64757f;
            --text-light: #93a8b2;
            --border: #dfe8e5;
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 28px;
            --shadow-sm: 0 2px 10px rgba(20, 50, 45, .05);
            --shadow-md: 0 10px 30px rgba(20, 50, 45, .08);
            --shadow-lg: 0 20px 50px rgba(20, 50, 45, .12);
            --space-section: 100px;
            --space-card: 26px;
        }

        *,
        *::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(--text);
            line-height: 1.7;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        a {
            text-decoration: none;
            color: var(--primary);
            transition: color .25s ease;
        }

        a:hover {
            color: var(--primary-dark);
        }

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

        button,
        input,
        textarea {
            font-family: inherit;
        }

        .container {
            max-width: 1180px;
        }

        .section-padding {
            padding: var(--space-section) 0;
        }

        .section-title {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.5px;
            color: var(--text);
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            max-width: 640px;
            margin: 0 auto 48px;
        }

        .section-head {
            text-align: center;
            margin-bottom: 52px;
        }

        .section-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50rem;
            letter-spacing: .5px;
            margin-bottom: 16px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1030;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(223, 232, 229, .7);
        }

        .main-nav {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -.3px;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .brand-badge {
            width: 38px;
            height: 38px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 16px;
            box-shadow: 0 6px 16px rgba(11, 120, 104, .28);
        }

        .navbar .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 18px;
            border-radius: 50rem;
            transition: all .25s ease;
            margin: 0 2px;
        }

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

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

        .navbar-toggler {
            border: none;
            border-radius: 10px;
            padding: 8px 10px;
            background: var(--primary-light);
        }

        .navbar-toggler:focus {
            box-shadow: none;
            outline: 2px solid var(--primary);
        }

        .navbar-toggler-icon {
            background-image: none;
            position: relative;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
            display: block;
            margin: 5px 0;
        }

        .navbar-toggler-icon::before,
        .navbar-toggler-icon::after {
            content: "";
            position: absolute;
            left: 0;
            width: 20px;
            height: 2px;
            background: var(--primary);
            border-radius: 4px;
        }

        .navbar-toggler-icon::before {
            top: -6px;
        }

        .navbar-toggler-icon::after {
            top: 6px;
        }

        .nav-actions {
            gap: 10px;
        }

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

        .nav-search i {
            position: absolute;
            left: 14px;
            color: var(--text-light);
            font-size: 14px;
        }

        .nav-search input {
            border: 1px solid var(--border);
            border-radius: 50rem;
            padding: 8px 16px 8px 38px;
            background: var(--bg);
            font-size: 14px;
            width: 190px;
            transition: all .3s ease;
        }

        .nav-search input:focus {
            outline: none;
            border-color: var(--primary);
            background: #fff;
            box-shadow: 0 0 0 4px rgba(11, 120, 104, .1);
        }

        .btn {
            border-radius: 50rem;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 22px;
            transition: all .3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 4px 14px rgba(11, 120, 104, .22);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(11, 120, 104, .3);
        }

        .btn-outline {
            background: transparent;
            border: 1.5px solid var(--border);
            color: var(--text);
        }

        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: #1e1b10;
        }

        .btn-accent:hover {
            background: #e0910f;
            border-color: #e0910f;
            color: #1e1b10;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(245, 166, 35, .3);
        }

        .btn-guest {
            background: transparent;
            border: 1.5px solid var(--primary);
            color: var(--primary);
        }

        .btn-guest:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== Hero ===== */
        .hero {
            position: relative;
            padding: 130px 0 110px;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            isolation: isolate;
            overflow: hidden;
        }

        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(8, 40, 37, .9) 0%, rgba(8, 40, 37, .72) 45%, rgba(8, 40, 37, .45) 100%);
            z-index: -1;
        }

        .hero-content {
            max-width: 640px;
            color: #fff;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, .12);
            border: 1px solid rgba(255, 255, 255, .2);
            backdrop-filter: blur(8px);
            padding: 8px 18px;
            border-radius: 50rem;
            font-size: 13px;
            font-weight: 500;
            color: #e8fff9;
            margin-bottom: 24px;
            letter-spacing: .4px;
        }

        .hero-title {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            letter-spacing: -1px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, .85);
            margin-bottom: 36px;
        }

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

        .hero-card {
            background: rgba(255, 255, 255, .08);
            border: 1px solid rgba(255, 255, 255, .14);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-md);
            padding: 28px;
            margin-top: 50px;
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .hero-card i {
            font-size: 26px;
            color: var(--accent);
        }

        .hero-card span {
            font-size: 14px;
            color: rgba(255, 255, 255, .7);
        }

        .hero-card strong {
            font-size: 16px;
            color: #fff;
        }

        /* ===== Intro ===== */
        .intro-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }

        .intro-media {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            position: relative;
        }

        .intro-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .intro-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-md);
            padding: 14px 22px;
            display: flex;
            align-items: center;
            gap: 12px;
            box-shadow: var(--shadow-md);
        }

        .intro-badge i {
            font-size: 24px;
            color: var(--primary);
        }

        .intro-badge strong {
            display: block;
            font-size: 15px;
            color: var(--text);
        }

        .intro-badge small {
            font-size: 12px;
            color: var(--text-muted);
        }

        .intro-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
        }

        .intro-list li {
            display: flex;
            gap: 12px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            font-size: 15px;
        }

        .intro-list li:last-child {
            border-bottom: none;
        }

        .intro-list i {
            color: var(--primary);
            font-size: 16px;
            margin-top: 4px;
            flex-shrink: 0;
        }

        /* ===== Category Entry ===== */
        .category-section {
            background: var(--bg);
        }

        .category-card {
            background: linear-gradient(135deg, var(--primary-light), #f0faf7);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            box-shadow: var(--shadow-sm);
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .category-media {
            flex: 1 1 280px;
            position: relative;
            min-height: 240px;
        }

        .category-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            inset: 0;
        }

        .category-content {
            flex: 1 1 360px;
            padding: 44px;
        }

        .category-content h3 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .category-content p {
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.8;
            margin-bottom: 26px;
        }

        .category-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 28px;
        }

        .category-tags .badge {
            background: var(--bg-white);
            border: 1px solid var(--border);
            color: var(--text-muted);
            font-weight: 500;
            font-size: 13px;
            padding: 6px 14px;
            border-radius: 50rem;
        }

        /* ===== News ===== */
        .news-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }

        .news-card {
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            height: 100%;
            transition: transform .3s ease, box-shadow .3s ease;
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
            border-color: rgba(11, 120, 104, .25);
        }

        .news-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }

        .news-tag {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 50rem;
        }

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

        .news-date i {
            margin-right: 4px;
        }

        .news-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 10px;
        }

        .news-title a {
            color: var(--text);
        }

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

        .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 18px;
            flex: 1;
        }

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

        .news-link i {
            transition: transform .2s ease;
        }

        .news-link:hover i {
            transform: translateX(4px);
        }

        .empty-state {
            background: var(--bg);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 48px;
            text-align: center;
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ===== Stats ===== */
        .stats-section {
            background: linear-gradient(135deg, rgba(10, 42, 38, .96), rgba(12, 56, 50, .92)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            color: #fff;
            padding: 90px 0;
            position: relative;
            overflow: hidden;
        }

        .stats-section::after {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: rgba(245, 166, 35, .08);
        }

        .stat-item {
            text-align: center;
            padding: 30px 16px;
        }

        .stat-number {
            font-size: 56px;
            font-weight: 800;
            line-height: 1.1;
            color: #fff;
            letter-spacing: -2px;
        }

        .stat-number span {
            color: var(--accent);
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255, 255, 255, .72);
            margin-top: 10px;
        }

        .stat-divider {
            border-left: 1px solid rgba(255, 255, 255, .12);
        }

        /* ===== Flow ===== */
        .flow-section {
            background: var(--bg);
        }

        .step-item {
            text-align: center;
            padding: 36px 24px;
            background: var(--bg-white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            position: relative;
            transition: transform .3s ease, box-shadow .3s ease;
            height: 100%;
        }

        .step-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .step-num {
            position: absolute;
            top: -20px;
            left: 28px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 50rem;
            box-shadow: 0 4px 14px rgba(11, 120, 104, .3);
        }

        .step-icon {
            width: 56px;
            height: 56px;
            border-radius: 18px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
        }

        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .flow-arrow {
            position: absolute;
            right: -20px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 2;
            color: var(--primary);
            font-size: 20px;
            opacity: .6;
        }

        /* ===== Features ===== */
        .features-section {
            background: var(--bg-white);
            border-bottom: 1px solid var(--border);
        }

        .feature-card {
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--bg-white);
            transition: transform .3s ease, box-shadow .3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }

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

        .feature-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .feature-card:hover .card-img img {
            transform: scale(1.04);
        }

        .feature-card .card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .feature-card .card-body h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .feature-card .card-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            flex: 1;
        }

        .feature-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
        }

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

        .accordion-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }

        .accordion-button {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: var(--bg-white);
            padding: 20px 26px;
            box-shadow: none;
        }

        .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
            box-shadow: none;
        }

        .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(11, 120, 104, .12);
        }

        .accordion-button::after {
            background-size: 16px;
            color: var(--primary);
        }

        .accordion-body {
            padding: 22px 26px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            background: var(--bg-white);
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(8, 60, 55, .95), rgba(10, 80, 72, .9)), url('/assets/images/backpic/back-3.png') center/cover no-repeat;
            color: #fff;
            padding: 90px 0;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 38px;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }

        .cta-section p {
            font-size: 17px;
            color: rgba(255, 255, 255, .85);
            max-width: 620px;
            margin: 0 auto 36px;
        }

        .cta-actions {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        .cta-btn-light {
            background: #fff;
            color: var(--primary);
            border: none;
        }

        .cta-btn-light:hover {
            background: var(--primary-light);
            color: var(--primary);
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--bg-deep);
            color: rgba(255, 255, 255, .7);
            padding: 70px 0 0;
        }

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

        .site-footer p {
            font-size: 14px;
            line-height: 1.8;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 10px;
        }

        .site-footer ul a {
            color: rgba(255, 255, 255, .6);
            font-size: 14px;
            transition: all .2s ease;
        }

        .site-footer ul a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 24px 0;
            margin-top: 50px;
            font-size: 13px;
            color: rgba(255, 255, 255, .4);
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 18px;
        }

        .footer-brand .brand-badge {
            background: rgba(255, 255, 255, .1);
            color: var(--accent);
        }

        .footer-brand span {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero {
                padding: 100px 0 80px;
            }
            .hero-title {
                font-size: 40px;
            }
            .stat-number {
                font-size: 42px;
            }
            .section-title {
                font-size: 30px;
            }
            .section-padding {
                padding: 80px 0;
            }
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: var(--bg-white);
                padding: 20px;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                margin-top: 12px;
                border: 1px solid var(--border);
            }
            .navbar .nav-link {
                padding: 12px 16px;
                margin: 2px 0;
            }
            .nav-actions {
                flex-wrap: wrap;
                padding-top: 14px;
                border-top: 1px solid var(--border);
                margin-top: 12px;
                width: 100%;
            }
            .nav-search {
                flex: 1 1 100%;
                margin-bottom: 10px;
            }
            .nav-search input {
                width: 100%;
            }
            .stat-divider {
                border-left: none;
                border-top: 1px solid rgba(255, 255, 255, .1);
            }
            .flow-arrow {
                display: none;
            }
            .category-content {
                padding: 32px 24px;
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 34px;
            }
            .hero {
                padding: 80px 0 60px;
            }
            .hero-card {
                flex-wrap: wrap;
                padding: 20px;
            }
            .section-title {
                font-size: 27px;
            }
            .cta-section h2 {
                font-size: 30px;
            }
            .intro-media img {
                min-height: 260px;
            }
            .category-card {
                flex-direction: column;
            }
            .category-media {
                flex: auto;
                width: 100%;
                min-height: 200px;
            }
            .category-media img {
                position: static;
                height: 200px;
            }
            .category-content {
                padding: 30px 24px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .hero-badge {
                font-size: 12px;
                padding: 6px 14px;
            }
            .section-padding {
                padding: 60px 0;
            }
            .section-title {
                font-size: 24px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 32px;
            }
            .stat-number {
                font-size: 40px;
            }
            .btn {
                padding: 9px 18px;
                font-size: 13px;
            }
            .feature-card .card-body {
                padding: 22px;
            }
            .accordion-button {
                font-size: 15px;
                padding: 18px 20px;
            }
            .accordion-body {
                padding: 18px 20px;
            }
            .cta-section {
                padding: 60px 0;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .cta-section p {
                font-size: 15px;
            }
            .footer-bottom {
                text-align: center;
            }
        }

/* roulang page: category1 */
/* ===== 设计变量 ===== */
        :root {
            --primary: #0f4c81;
            --primary-dark: #0a3a63;
            --primary-light: #eaf2f9;
            --accent: #00a8a0;
            --accent-dark: #00857f;
            --accent-light: #e2f7f5;
            --brand-gold: #f0b429;
            --bg-body: #f5f8fc;
            --bg-white: #ffffff;
            --bg-deep: #0b2e4d;
            --text-main: #183247;
            --text-muted: #5b7187;
            --text-light: #8ca3b8;
            --border: #dde7f0;
            --border-light: #eaf1f7;
            --radius-lg: 20px;
            --radius-md: 14px;
            --radius-sm: 10px;
            --shadow-sm: 0 2px 10px rgba(15, 76, 129, 0.06);
            --shadow-md: 0 10px 30px rgba(15, 76, 129, 0.10);
            --shadow-lg: 0 24px 56px rgba(15, 76, 129, 0.16);
            --transition: all 0.28s ease;
        }

        /* ===== 基础 Reset ===== */
        *,
        *::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;
            font-size: 1rem;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--bg-body);
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        button,
        input {
            font: inherit;
        }

        section {
            position: relative;
            scroll-margin-top: 90px;
        }

        .container {
            max-width: 1240px;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1080;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-light);
            box-shadow: 0 2px 18px rgba(15, 76, 129, 0.05);
        }

        .main-nav {
            padding-top: 14px;
            padding-bottom: 14px;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.18rem;
            color: var(--primary-dark);
            letter-spacing: 0.3px;
        }

        .navbar-brand:hover {
            color: var(--primary);
        }

        .brand-badge {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--accent));
            display: inline-flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1rem;
            box-shadow: 0 6px 14px rgba(15, 76, 129, 0.24);
            flex-shrink: 0;
        }

        .main-nav .navbar-nav .nav-link {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-main);
            padding: 8px 18px;
            border-radius: 30px;
            margin: 0 2px;
            transition: var(--transition);
        }

        .main-nav .navbar-nav .nav-link:hover,
        .main-nav .navbar-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-actions {
            gap: 10px;
        }

        .nav-search {
            display: flex;
            align-items: center;
            background: var(--bg-body);
            border: 1px solid var(--border-light);
            border-radius: 30px;
            padding: 7px 16px;
            gap: 8px;
            transition: var(--transition);
        }

        .nav-search i {
            color: var(--text-light);
            font-size: 0.85rem;
        }

        .nav-search input {
            border: none;
            outline: none;
            background: transparent;
            width: 150px;
            font-size: 0.9rem;
            color: var(--text-main);
        }

        .nav-search input::placeholder {
            color: var(--text-light);
        }

        .nav-search:focus-within {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(0, 168, 160, 0.12);
        }

        .btn-guest {
            background: var(--bg-white);
            border: 1px solid var(--border);
            color: var(--primary);
            font-weight: 600;
            font-size: 0.88rem;
            border-radius: 30px;
            padding: 7px 18px;
            transition: var(--transition);
        }

        .btn-guest:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: var(--accent-light);
        }

        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 0.88rem;
            border-radius: 30px;
            padding: 8px 20px;
            box-shadow: 0 6px 16px rgba(15, 76, 129, 0.2);
            transition: var(--transition);
        }

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(15, 76, 129, 0.26);
        }

        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            font-weight: 600;
            border-radius: 30px;
            padding: 10px 26px;
            box-shadow: 0 8px 20px rgba(0, 168, 160, 0.22);
            transition: var(--transition);
        }

        .btn-accent:hover {
            background: var(--accent-dark);
            border-color: var(--accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 14px 30px rgba(0, 168, 160, 0.28);
        }

        .navbar-toggler {
            border: none;
            padding: 6px 10px;
            border-radius: 10px;
            background: var(--bg-body);
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.15);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(15, 76, 129, 0.9)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== 页面横幅 Banner ===== */
        .category-hero {
            background: linear-gradient(120deg, rgba(10, 58, 99, 0.92), rgba(15, 76, 129, 0.78)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat fixed;
            padding: 92px 0 64px;
            color: #fff;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .category-hero .breadcrumb {
            background: transparent;
            margin-bottom: 18px;
            padding: 0;
        }

        .category-hero .breadcrumb a {
            color: rgba(255, 255, 255, 0.75);
            font-weight: 500;
        }

        .category-hero .breadcrumb a:hover {
            color: #fff;
        }

        .category-hero .breadcrumb-item + .breadcrumb-item::before {
            color: rgba(255, 255, 255, 0.5);
        }

        .category-hero .breadcrumb-item.active {
            color: #fff;
            font-weight: 600;
        }

        .category-hero .hero-title {
            font-size: 2.85rem;
            font-weight: 800;
            line-height: 1.25;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .category-hero .hero-title .text-accent {
            color: #7ee0da;
        }

        .category-hero .hero-lead {
            font-size: 1.08rem;
            color: rgba(255, 255, 255, 0.88);
            max-width: 720px;
            margin-bottom: 0;
        }

        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 22px;
        }

        .hero-meta .tag-pill {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.14);
            border: 1px solid rgba(255, 255, 255, 0.22);
            backdrop-filter: blur(4px);
            color: #fff;
            padding: 6px 16px;
            border-radius: 30px;
            font-size: 0.85rem;
            font-weight: 500;
        }

        /* ===== KPI 统计区 ===== */
        .stats-section {
            padding: 56px 0 24px;
        }

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

        .stat-card {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 26px 22px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .stat-card::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 20%;
            right: 20%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            border-radius: 3px 3px 0 0;
            opacity: 0;
            transition: var(--transition);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }

        .stat-card:hover::after {
            opacity: 1;
        }

        .stat-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            background: var(--accent-light);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            margin-bottom: 12px;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            line-height: 1.3;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
            font-weight: 500;
            margin-top: 4px;
        }

        /* ===== 板块标题 ===== */
        .section-head {
            text-align: center;
            max-width: 720px;
            margin: 0 auto 48px;
        }

        .section-head .section-tag {
            display: inline-block;
            background: var(--accent-light);
            color: var(--accent-dark);
            border-radius: 30px;
            font-size: 0.82rem;
            font-weight: 700;
            padding: 6px 18px;
            letter-spacing: 0.5px;
            margin-bottom: 14px;
            border: 1px solid rgba(0, 168, 160, 0.16);
        }

        .section-head h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .section-head p {
            font-size: 1.02rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 登录方式卡片 ===== */
        .methods-section {
            padding: 60px 0 30px;
        }

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

        .method-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }

        .method-card .method-media {
            position: relative;
            background: var(--primary-light);
            aspect-ratio: 16 / 10;
            overflow: hidden;
        }

        .method-card .method-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s ease;
        }

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

        .method-badge {
            position: absolute;
            top: 14px;
            right: 14px;
            background: rgba(15, 76, 129, 0.92);
            color: #fff;
            border-radius: 30px;
            font-size: 0.76rem;
            font-weight: 600;
            padding: 4px 14px;
            backdrop-filter: blur(4px);
        }

        .method-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .method-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 10px;
        }

        .method-body p {
            font-size: 0.93rem;
            color: var(--text-muted);
            flex: 1;
            margin-bottom: 16px;
            line-height: 1.7;
        }

        .method-foot {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 14px;
            border-top: 1px solid var(--border-light);
        }

        .method-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
        }

        .method-tags .mini-tag {
            background: var(--bg-body);
            border: 1px solid var(--border-light);
            color: var(--text-muted);
            font-size: 0.76rem;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 30px;
        }

        .method-btn {
            margin-left: auto;
            color: var(--primary);
            font-weight: 700;
            font-size: 0.85rem;
            white-space: nowrap;
        }

        .method-btn i {
            transition: transform 0.28s ease;
        }

        .method-btn:hover i {
            transform: translateX(4px);
        }

        /* ===== 安全设置图文区 ===== */
        .security-section {
            padding: 60px 0;
            background: var(--bg-white);
            border-top: 1px solid var(--border-light);
            border-bottom: 1px solid var(--border-light);
        }

        .security-media {
            background: var(--primary-light);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            height: 100%;
        }

        .security-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }

        .security-content {
            padding: 20px 0 20px 20px;
        }

        .security-content h2 {
            font-size: 1.9rem;
            font-weight: 800;
            color: var(--primary-dark);
            margin-bottom: 16px;
            line-height: 1.35;
        }

        .security-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .security-list li {
            display: flex;
            gap: 14px;
            padding: 14px 0;
            border-bottom: 1px solid var(--border-light);
            align-items: flex-start;
        }

        .security-list li:last-child {
            border-bottom: none;
        }

        .security-list .icon-box {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: var(--accent-light);
            color: var(--accent);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 0.95rem;
        }

        .security-list h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .security-list p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== 登录流程时间线 ===== */
        .steps-section {
            padding: 60px 0 40px;
            background: linear-gradient(180deg, var(--bg-body) 0%, #edf4fa 100%);
        }

        .steps-wrapper {
            max-width: 920px;
            margin: 0 auto;
            position: relative;
            padding-left: 0;
        }

        .steps-wrapper::before {
            content: '';
            position: absolute;
            left: 32px;
            top: 20px;
            bottom: 20px;
            width: 3px;
            background: linear-gradient(180deg, var(--primary), var(--accent), transparent);
            border-radius: 3px;
            opacity: 0.3;
        }

        .step-item {
            position: relative;
            display: flex;
            gap: 22px;
            padding: 0 0 34px 0;
            align-items: flex-start;
        }

        .step-item:last-child {
            padding-bottom: 0;
        }

        .step-number {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--primary);
            flex-shrink: 0;
            position: relative;
            z-index: 1;
            transition: var(--transition);
        }

        .step-item:hover .step-number {
            background: var(--primary);
            color: #fff;
            transform: rotate(-3deg) scale(1.04);
            box-shadow: var(--shadow-md);
        }

        .step-content {
            background: var(--bg-white);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 20px 26px;
            box-shadow: var(--shadow-sm);
            flex: 1;
            transition: var(--transition);
        }

        .step-content:hover {
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }

        .step-content h4 {
            font-size: 1.08rem;
            font-weight: 700;
            color: var(--primary-dark);
            margin-bottom: 6px;
        }

        .step-content p {
            font-size: 0.92rem;
            color: var(--text-muted);
            margin-bottom: 0;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 60px 0 40px;
            background: var(--bg-white);
        }

        .faq-accordion {
            max-width: 860px;
            margin: 0 auto;
        }

        .faq-accordion .accordion-item {
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            background: var(--bg-white);
        }

        .faq-accordion .accordion-button {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-main);
            padding: 18px 24px;
            background: var(--bg-white);
            box-shadow: none;
            transition: var(--transition);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: var(--primary-light);
        }

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(15, 76, 129, 0.12);
        }

        .faq-accordion .accordion-button::after {
            background-size: 1rem;
            filter: hue-rotate(160deg);
        }

        .faq-accordion .accordion-body {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.75;
            padding: 8px 24px 22px;
            border-top: 1px solid var(--border-light);
        }

        /* ===== CTA 区块 ===== */
        .cta-section {
            padding: 72px 0;
            background: linear-gradient(115deg, rgba(11, 46, 77, 0.94), rgba(15, 76, 129, 0.82)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-radius: 0;
            margin: 0;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(0, 168, 160, 0.18);
            filter: blur(50px);
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            text-align: center;
            max-width: 760px;
            margin: 0 auto;
        }

        .cta-inner h2 {
            font-size: 2.1rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .cta-inner p {
            font-size: 1.06rem;
            color: rgba(255, 255, 255, 0.88);
            margin-bottom: 28px;
        }

        .cta-buttons {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-light-custom {
            background: #fff;
            color: var(--primary-dark);
            border: none;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 11px 28px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
            transition: var(--transition);
        }

        .btn-light-custom:hover {
            background: var(--accent-light);
            color: var(--accent-dark);
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.22);
        }

        .btn-outline-light-custom {
            background: transparent;
            color: #fff;
            border: 2px solid rgba(255, 255, 255, 0.6);
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.95rem;
            padding: 10px 28px;
            transition: var(--transition);
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--bg-deep);
            padding: 64px 0 0;
            color: rgba(255, 255, 255, 0.76);
        }

        .site-footer h4 {
            color: #fff;
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 18px;
        }

        .site-footer p {
            font-size: 0.92rem;
            color: rgba(255, 255, 255, 0.68);
            line-height: 1.75;
            margin-top: 16px;
        }

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
            font-size: 1.2rem;
            font-weight: 800;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 0.92rem;
        }

        .site-footer ul li a {
            color: rgba(255, 255, 255, 0.68);
            transition: var(--transition);
        }

        .site-footer ul li a:hover {
            color: #fff;
            padding-left: 4px;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 20px 0;
            margin-top: 44px;
            font-size: 0.88rem;
            color: rgba(255, 255, 255, 0.55);
        }

        .site-footer .footer-bottom a {
            color: rgba(255, 255, 255, 0.72);
        }

        .site-footer .footer-bottom a:hover {
            color: #fff;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .category-hero .hero-title {
                font-size: 2.3rem;
            }

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

            .security-content {
                padding-left: 0;
                padding-top: 30px;
            }

            .security-media {
                margin-bottom: 0;
            }
        }

        @media (max-width: 768px) {
            .site-header .navbar-collapse {
                background: var(--bg-white);
                border-radius: var(--radius-md);
                padding: 18px;
                margin-top: 12px;
                border: 1px solid var(--border-light);
                box-shadow: var(--shadow-md);
            }

            .nav-actions {
                flex-wrap: wrap;
                margin-top: 12px;
            }

            .nav-search {
                width: 100%;
            }

            .nav-search input {
                width: 100%;
            }

            .category-hero {
                padding: 60px 0 48px;
                background-attachment: scroll;
            }

            .category-hero .hero-title {
                font-size: 1.9rem;
            }

            .category-hero .hero-lead {
                font-size: 0.98rem;
            }

            .section-head h2 {
                font-size: 1.65rem;
            }

            .section-head p {
                font-size: 0.95rem;
            }

            .method-body {
                padding: 20px;
            }

            .steps-wrapper::before {
                left: 26px;
            }

            .step-number {
                width: 54px;
                height: 54px;
                font-size: 1rem;
            }

            .step-content {
                padding: 16px 18px;
            }

            .cta-inner h2 {
                font-size: 1.7rem;
            }

            .cta-inner p {
                font-size: 0.96rem;
            }

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

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .stat-card {
                padding: 20px;
            }

            .category-hero .hero-title {
                font-size: 1.6rem;
            }

            .hero-meta {
                gap: 8px;
            }

            .hero-meta .tag-pill {
                font-size: 0.78rem;
                padding: 5px 12px;
            }

            .section-head h2 {
                font-size: 1.4rem;
            }

            .section-head .section-tag {
                font-size: 0.76rem;
                padding: 5px 14px;
            }

            .method-card .method-body h3 {
                font-size: 1.08rem;
            }

            .step-item {
                gap: 14px;
            }

            .step-number {
                width: 48px;
                height: 48px;
                border-radius: 14px;
                font-size: 0.9rem;
            }

            .step-content {
                padding: 14px 16px;
            }

            .step-content h4 {
                font-size: 0.98rem;
            }

            .security-list li {
                gap: 10px;
            }

            .security-list .icon-box {
                width: 34px;
                height: 34px;
                font-size: 0.85rem;
            }

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

            .btn-light-custom,
            .btn-outline-light-custom {
                width: 100%;
                text-align: center;
            }
        }

        /* 焦点可访问性 */
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(0, 168, 160, 0.4);
            outline-offset: 2px;
        }

/* roulang page: article */
:root {
            --primary: #1b4dff;
            --primary-rgb: 27, 77, 255;
            --primary-dark: #0e37cc;
            --primary-light: #eef2ff;
            --accent: #0fc7a8;
            --accent-rgb: 15, 199, 168;
            --bg: #f5f7fb;
            --surface: #ffffff;
            --text: #1e293b;
            --text-light: #64748b;
            --border: #e2e8f0;
            --radius: 14px;
            --radius-lg: 20px;
            --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.05);
            --shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
            --shadow-lg: 0 18px 50px rgba(15, 23, 42, 0.12);
            --transition: all 0.25s ease;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: system-ui, -apple-system, "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Segoe UI", sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a:hover {
            color: var(--primary-dark);
        }

        img {
            max-width: 100%;
        }

        .container {
            max-width: 1200px;
        }

        /* ===== Header / Nav ===== */
        .site-header {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .main-nav {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.2rem;
            color: var(--text);
            letter-spacing: -0.01em;
        }

        .navbar-brand:hover {
            color: var(--text);
        }

        .brand-badge {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            background: linear-gradient(135deg, var(--primary), #06b6d4);
            color: #fff;
            border-radius: 9px;
            font-size: 1rem;
            box-shadow: 0 4px 12px rgba(var(--primary-rgb), 0.28);
            flex-shrink: 0;
        }

        .main-nav .nav-link {
            font-weight: 600;
            color: var(--text-light);
            padding: 8px 16px !important;
            border-radius: 8px;
            transition: var(--transition);
            position: relative;
            font-size: 0.95rem;
        }

        .main-nav .nav-link:hover,
        .main-nav .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
        }

        .main-nav .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 2px;
            left: 50%;
            width: 22px;
            height: 3px;
            border-radius: 3px;
            background: var(--primary);
            transform: translateX(-50%);
        }

        .nav-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg);
            border: 1px solid var(--border);
            padding: 7px 14px;
            border-radius: 24px;
            width: 180px;
            transition: var(--transition);
        }

        .nav-search:focus-within {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.12);
            background: #fff;
        }

        .nav-search input {
            border: 0;
            background: transparent;
            outline: 0;
            width: 100%;
            font-size: 0.85rem;
            color: var(--text);
        }

        .nav-search i {
            color: var(--text-light);
            font-size: 0.85rem;
        }

        .btn-guest {
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-weight: 600;
            border-radius: 24px;
            padding: 8px 18px;
            font-size: 0.88rem;
            transition: var(--transition);
        }

        .btn-guest:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-1px);
        }

        .btn-primary {
            background: var(--primary);
            border: 1px solid var(--primary);
            color: #fff;
            font-weight: 600;
            border-radius: 24px;
            padding: 9px 22px;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(var(--primary-rgb), 0.28);
            transition: var(--transition);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            border-color: var(--primary-dark);
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 6px 18px rgba(var(--primary-rgb), 0.32);
        }

        .btn-outline-guest {
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-weight: 600;
            border-radius: 24px;
            padding: 9px 22px;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .btn-outline-guest:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid var(--border);
            border-radius: 10px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 4px rgba(var(--primary-rgb), 0.15);
            outline: 0;
        }

        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 26px 0 0;
        }

        .breadcrumb {
            background: transparent;
            padding: 0;
            margin: 0;
            font-size: 0.88rem;
        }

        .breadcrumb-item a {
            color: var(--text-light);
        }

        .breadcrumb-item a:hover {
            color: var(--primary);
        }

        .breadcrumb-item.active {
            color: var(--primary);
            font-weight: 600;
        }

        .breadcrumb-item+.breadcrumb-item::before {
            color: #94a3b8;
        }

        /* ===== Article ===== */
        .article-section {
            padding: 30px 0 20px;
        }

        .article-header {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 36px;
            margin: 24px 0 28px;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .article-header::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
        }

        .article-category {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            padding: 5px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .article-title {
            font-size: 2rem;
            font-weight: 800;
            line-height: 1.35;
            margin: 0 0 18px;
            color: var(--text);
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            color: var(--text-light);
            font-size: 0.86rem;
        }

        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .article-cover {
            margin-bottom: 28px;
        }

        .article-cover img {
            width: 100%;
            border-radius: var(--radius);
            object-fit: cover;
            aspect-ratio: 21 / 9;
            box-shadow: var(--shadow);
        }

        .article-main {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            margin-bottom: 40px;
        }

        .article-body {
            font-size: 1.02rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-body p {
            margin: 0 0 1.4em;
        }

        .article-body h2 {
            font-size: 1.45rem;
            font-weight: 800;
            margin: 1.8em 0 0.8em;
            color: var(--text);
        }

        .article-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin: 1.4em 0 0.6em;
            color: var(--text);
        }

        .article-body img {
            max-width: 100%;
            border-radius: var(--radius);
        }

        .article-body ul,
        .article-body ol {
            margin: 0 0 1.4em;
            padding-left: 1.4em;
        }

        .article-body li {
            margin-bottom: 0.5em;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--primary-light);
            padding: 12px 18px;
            border-radius: 0 10px 10px 0;
            margin: 1.4em 0;
            color: var(--text);
        }

        .article-body a {
            color: var(--primary);
            font-weight: 600;
        }

        .article-body a:hover {
            text-decoration: underline;
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 32px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
        }

        .tag {
            display: inline-block;
            background: var(--bg);
            border: 1px solid var(--border);
            color: var(--text-light);
            font-size: 0.85rem;
            padding: 5px 14px;
            border-radius: 16px;
            font-weight: 500;
        }

        .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }

        .article-nav-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-top: 24px;
        }

        /* ===== Not Found ===== */
        .not-found-box {
            padding: 40px 20px;
        }

        .not-found-icon {
            font-size: 3rem;
            color: #f59e0b;
            margin-bottom: 18px;
        }

        .not-found-box h2 {
            font-weight: 800;
            margin-bottom: 10px;
        }

        .not-found-box p {
            color: var(--text-light);
            margin-bottom: 20px;
        }

        /* ===== Section ===== */
        .section-block {
            padding: 56px 0;
        }

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

        .section-title {
            font-size: 1.7rem;
            font-weight: 800;
            margin-bottom: 10px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            color: var(--text-light);
            max-width: 560px;
            margin: 0 auto;
        }

        .badge-soft {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 0.82rem;
            font-weight: 700;
            padding: 5px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
        }

        /* ===== Feature Card ===== */
        .feature-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            height: 100%;
            transition: var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .feature-card:hover {
            box-shadow: var(--shadow);
            transform: translateY(-4px);
            border-color: rgba(var(--primary-rgb), 0.3);
        }

        .feature-icon {
            width: 46px;
            height: 46px;
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            margin-bottom: 16px;
        }

        .bg-soft-primary {
            background: var(--primary-light);
            color: var(--primary);
        }

        .bg-soft-accent {
            background: rgba(var(--accent-rgb), 0.12);
            color: #0d9488;
        }

        .bg-soft-warning {
            background: #fffbeb;
            color: #d97706;
        }

        .feature-card h3 {
            font-size: 1.08rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .feature-card p {
            color: var(--text-light);
            font-size: 0.92rem;
            margin-bottom: 16px;
        }

        .card-link {
            font-weight: 700;
            font-size: 0.88rem;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        /* ===== Guide Banner ===== */
        .guide-banner {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-sm);
            transition: var(--transition);
        }

        .guide-banner:hover {
            box-shadow: var(--shadow);
        }

        .guide-banner img {
            border-radius: var(--radius);
            width: 100%;
            object-fit: cover;
        }

        .guide-list {
            list-style: none;
            padding: 0;
            margin: 0 0 24px;
        }

        .guide-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 6px 0;
            color: var(--text-light);
        }

        .guide-list li i {
            color: var(--accent);
            font-size: 1.05rem;
        }

        /* ===== CTA ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(14, 55, 204, 0.96), rgba(6, 182, 212, 0.92)), url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            color: #fff;
            text-align: center;
            margin: 56px 0;
            box-shadow: var(--shadow-lg);
            position: relative;
            overflow: hidden;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 14px;
        }

        .cta-section p {
            opacity: 0.92;
            max-width: 560px;
            margin: 0 auto 26px;
        }

        .btn-light {
            background: #fff;
            border: 1px solid #fff;
            color: var(--primary);
            font-weight: 700;
            border-radius: 24px;
            padding: 11px 28px;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
        }

        .btn-light:hover {
            background: #f1f5f9;
            border-color: #f1f5f9;
            color: var(--primary-dark);
            transform: translateY(-1px);
        }

        .btn-ghost-light {
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.5);
            color: #fff;
            font-weight: 700;
            border-radius: 24px;
            padding: 11px 28px;
            transition: var(--transition);
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, 0.22);
            color: #fff;
            transform: translateY(-1px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 56px 0 20px;
            margin-top: 60px;
        }

        .site-footer h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 10px;
            font-size: 0.92rem;
        }

        .site-footer a {
            color: #cbd5e1;
            text-decoration: none;
            transition: var(--transition);
        }

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

        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }

        .site-footer p {
            font-size: 0.92rem;
            color: #94a3b8;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 36px;
            padding-top: 20px;
            font-size: 0.85rem;
            color: #94a3b8;
        }

        /* ===== Responsive ===== */
        @media (max-width: 991.98px) {
            .nav-search {
                width: 140px;
            }

            .article-title {
                font-size: 1.7rem;
            }

            .cta-section {
                padding: 44px 28px;
            }
        }

        @media (max-width: 767.98px) {
            .main-nav {
                padding: 12px 0;
            }

            .navbar-collapse {
                padding-top: 14px;
            }

            .nav-actions {
                flex-wrap: wrap;
                width: 100%;
                margin-top: 8px;
            }

            .nav-search {
                width: 100%;
                order: 3;
                margin-top: 8px;
            }

            .article-header {
                padding: 26px 22px;
            }

            .article-title {
                font-size: 1.45rem;
            }

            .article-main {
                padding: 26px 22px;
            }

            .article-cover img {
                aspect-ratio: 16 / 9;
            }

            .section-block {
                padding: 42px 0;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .guide-banner {
                padding: 24px 20px;
            }

            .cta-section {
                padding: 36px 20px;
                margin: 40px 0;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 575.98px) {
            .article-header {
                padding: 20px 16px;
            }

            .article-meta {
                gap: 10px;
            }

            .article-main {
                padding: 20px 16px;
            }

            .article-body {
                font-size: 0.98rem;
            }

            .article-body h2 {
                font-size: 1.25rem;
            }

            .article-nav-buttons .btn {
                width: 100%;
            }

            .section-head {
                margin-bottom: 28px;
            }

            .feature-card {
                padding: 22px;
            }

            .cta-section {
                border-radius: var(--radius);
            }

            .guide-banner img {
                max-height: 220px;
                object-fit: cover;
            }
        }