/* roulang page: index */
:root {
            --primary: #16336b;
            --primary-light: #2b57a0;
            --primary-dark: #10254d;
            --accent: #d9a441;
            --accent-light: #efc46a;
            --accent-dark: #b8862f;
            --white: #ffffff;
            --bg-light: #f5f7fb;
            --bg-gradient: linear-gradient(135deg, #f6f8fd 0%, #eef1f8 100%);
            --text-main: #1e293b;
            --text-muted: #64748b;
            --border: #e2e8f0;
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-sm: 0 2px 12px rgba(22, 51, 107, .06);
            --shadow-md: 0 10px 30px rgba(22, 51, 107, .08);
            --shadow-lg: 0 20px 50px rgba(22, 51, 107, .14);
            --container: 1200px;
            --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
        }
        *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body {
            font-family: var(--font-main);
            font-size: 16px;
            line-height: 1.75;
            color: var(--text-main);
            background: var(--white);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a { color: inherit; text-decoration: none; }
        img { max-width: 100%; display: block; height: auto; }
        button { font-family: inherit; cursor: pointer; border: none; background: none; }
        input, select, textarea { font-family: inherit; font-size: inherit; }
        ul, ol { list-style: none; }
        .container { max-width: var(--container); margin: 0 auto; padding: 0 24px; }
        h1, h2, h3, h4, h5 { line-height: 1.3; font-weight: 700; color: var(--primary-dark); }
        p { color: var(--text-main); }
        .text-center { text-align: center; }
        .section-padding { padding: 88px 0; }
        @media (max-width: 768px) { .section-padding { padding: 64px 0; } }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 34px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all .25s ease;
            white-space: nowrap;
            border: 2px solid transparent;
            text-align: center;
        }
        .btn i { font-size: 14px; }
        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: #101830;
        }
        .btn-accent:hover {
            background: var(--accent-light);
            border-color: var(--accent-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(217, 164, 65, .28);
        }
        .btn-primary {
            background: var(--primary);
            border-color: var(--primary);
            color: var(--white);
        }
        .btn-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(22, 51, 107, .24);
        }
        .btn-outline {
            background: transparent;
            border-color: rgba(255, 255, 255, .55);
            color: var(--white);
        }
        .btn-outline:hover {
            background: rgba(255, 255, 255, .12);
            border-color: var(--white);
            transform: translateY(-2px);
        }
        .btn-light {
            background: var(--white);
            border-color: var(--white);
            color: var(--primary);
        }
        .btn-light:hover {
            background: #f1f5ff;
            border-color: #f1f5ff;
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, .14);
        }
        .btn:focus-visible, .nav-link:focus-visible, a:focus-visible, summary:focus-visible {
            outline: 3px solid var(--accent-light);
            outline-offset: 2px;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 4px 14px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: .4px;
            background: rgba(217, 164, 65, .12);
            color: #9a6b14;
            border: 1px solid rgba(217, 164, 65, .24);
        }
        .badge-primary {
            background: rgba(22, 51, 107, .08);
            color: var(--primary);
            border-color: rgba(22, 51, 107, .16);
        }

        .section-title {
            font-size: clamp(1.7rem, 3vw, 2.3rem);
            font-weight: 800;
            letter-spacing: -0.5px;
        }
        .section-sub {
            color: var(--text-muted);
            font-size: 16px;
            max-width: 620px;
            margin: 12px auto 0;
            line-height: 1.8;
        }
        .section-head { text-align: center; margin-bottom: 56px; }
        .section-head .section-title { margin-bottom: 8px; }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(255, 255, 255, .96);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(226, 232, 240, .7);
            transition: box-shadow .3s ease, border-color .3s ease;
        }
        .site-header.scrolled {
            box-shadow: var(--shadow-md);
            border-bottom-color: transparent;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 14px;
            padding-bottom: 14px;
            gap: 24px;
        }
        .brand {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .brand-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-light);
            font-size: 18px;
            box-shadow: 0 6px 16px rgba(22, 51, 107, .22);
        }
        .brand-text {
            font-size: 1.3rem;
            font-weight: 800;
            letter-spacing: .5px;
            color: var(--primary);
            white-space: nowrap;
        }
        .brand-text small { font-weight: 600; color: var(--accent-dark); font-size: .8em; }
        .main-nav { display: flex; align-items: center; gap: 8px; }
        .nav-links { display: flex; align-items: center; gap: 8px; }
        .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 20px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            transition: all .22s ease;
            border: 1px solid transparent;
        }
        .nav-link i { font-size: 14px; color: var(--text-muted); transition: color .22s ease; }
        .nav-link:hover {
            color: var(--primary);
            background: rgba(22, 51, 107, .06);
            transform: translateY(-1px);
        }
        .nav-link.active {
            color: var(--primary);
            background: rgba(22, 51, 107, .1);
            border-color: rgba(22, 51, 107, .12);
        }
        .nav-link.active::after { content: ""; width: 0; }
        .header-cta { display: flex; align-items: center; gap: 12px; }
        .header-cta .btn { padding: 10px 24px; font-size: 14px; }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--bg-light);
            border: 1px solid var(--border);
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            transition: all .2s ease;
        }
        .nav-toggle:hover { background: var(--primary); color: var(--white); }
        @media (max-width: 980px) {
            .nav-toggle { display: inline-flex; }
            .main-nav {
                position: fixed;
                top: 70px;
                left: 20px;
                right: 20px;
                background: var(--white);
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-lg);
                padding: 20px;
                flex-direction: column;
                align-items: stretch;
                gap: 6px;
                opacity: 0;
                visibility: hidden;
                transform: translateY(-12px);
                transition: all .3s ease;
                border: 1px solid var(--border);
            }
            .main-nav.active {
                opacity: 1;
                visibility: visible;
                transform: translateY(0);
            }
            .nav-links { flex-direction: column; align-items: stretch; gap: 4px; }
            .nav-link { justify-content: flex-start; padding: 12px 16px; }
            .header-cta { margin-top: 10px; }
            .header-cta .btn { width: 100%; justify-content: center; }
            .header-inner { padding-top: 12px; padding-bottom: 12px; }
        }
        @media (max-width: 520px) {
            .brand-text { font-size: 1.05rem; }
            .brand-icon { width: 36px; height: 36px; font-size: 14px; }
            .header-cta { display: none; }
            .main-nav { top: 62px; }
        }

        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            min-height: 560px;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .hero::before {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(16, 37, 77, .88) 0%, rgba(22, 51, 107, .76) 50%, rgba(16, 37, 77, .64) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 80px 20px;
            max-width: 780px;
            margin: 0 auto;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(217, 164, 65, .18);
            border: 1px solid rgba(217, 164, 65, .45);
            color: var(--accent-light);
            padding: 6px 20px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 24px;
            backdrop-filter: blur(6px);
        }
        .hero h1 {
            color: var(--white);
            font-size: clamp(2.2rem, 5vw, 3.6rem);
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.25;
            margin-bottom: 20px;
            text-shadow: 0 4px 20px rgba(0, 0, 0, .2);
        }
        .hero-sub {
            color: rgba(255, 255, 255, .88);
            font-size: clamp(1rem, 1.6vw, 1.15rem);
            line-height: 1.9;
            margin-bottom: 36px;
            max-width: 620px;
            margin-left: auto;
            margin-right: auto;
        }
        .hero-cta { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center; }
        @media (max-width: 768px) {
            .hero { min-height: 460px; }
            .hero-content { padding: 60px 16px; }
            .hero-cta { flex-direction: column; align-items: center; }
            .hero-cta .btn { width: 100%; max-width: 320px; }
        }

        .features {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
        }
        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
        }
        .feature-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 36px 28px;
            text-align: left;
            transition: all .3s ease;
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }
        .feature-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--accent), var(--accent-light));
            opacity: 0;
            transition: opacity .3s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(22, 51, 107, .16);
        }
        .feature-card:hover::before { opacity: 1; }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: var(--accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
            box-shadow: 0 8px 20px rgba(22, 51, 107, .2);
        }
        .feature-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
        .feature-card p { font-size: 14px; color: var(--text-muted); line-height: 1.8; }
        @media (max-width: 1024px) {
            .features-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 580px) {
            .features-grid { grid-template-columns: 1fr; }
            .feature-card { padding: 26px 20px; }
        }

        .about { background: var(--white); }
        .about-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        .about-image {
            position: relative;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
        }
        .about-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }
        .about-image::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(16, 37, 77, .2), transparent 50%);
        }
        .about-badge {
            position: absolute;
            bottom: 20px;
            left: 20px;
            z-index: 2;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(8px);
            border-radius: var(--radius-sm);
            padding: 12px 18px;
            font-size: 13px;
            font-weight: 700;
            color: var(--primary);
            display: flex;
            align-items: center;
            gap: 8px;
            box-shadow: var(--shadow-sm);
        }
        .about-content .section-title { text-align: left; margin-bottom: 16px; }
        .about-content > p { color: var(--text-muted); line-height: 1.9; margin-bottom: 24px; }
        .about-points { display: flex; flex-direction: column; gap: 14px; margin-bottom: 32px; }
        .about-point {
            display: flex;
            gap: 14px;
            align-items: flex-start;
            padding: 14px 16px;
            background: var(--bg-light);
            border-radius: var(--radius-sm);
            border-left: 3px solid var(--accent);
        }
        .about-point i { color: var(--accent-dark); font-size: 16px; margin-top: 4px; }
        .about-point strong { color: var(--primary-dark); font-size: 15px; }
        .about-point span { font-size: 14px; color: var(--text-muted); }
        @media (max-width: 980px) {
            .about-grid { grid-template-columns: 1fr; gap: 40px; }
            .about-image img { min-height: 280px; }
        }

        .category {
            background: var(--bg-gradient);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .category-card {
            background: var(--white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            transition: all .3s ease;
            display: flex;
            border: 1px solid var(--border);
        }
        .category-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .category-media {
            width: 46%;
            position: relative;
            overflow: hidden;
            min-height: 300px;
        }
        .category-media img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
        .category-card:hover .category-media img { transform: scale(1.04); }
        .category-media::after {
            content: "";
            position: absolute;
            inset: 0;
            background: linear-gradient(to right, transparent, rgba(16, 37, 77, .1));
        }
        .category-body { flex: 1; padding: 44px; display: flex; flex-direction: column; justify-content: center; }
        .category-body .badge { align-self: flex-start; margin-bottom: 16px; }
        .category-body h3 { font-size: 1.6rem; margin-bottom: 14px; }
        .category-body p { color: var(--text-muted); line-height: 1.85; margin-bottom: 22px; }
        .category-points { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 26px; }
        .category-points span {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: 999px;
            padding: 5px 14px;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
        }
        .category-body .btn { align-self: flex-start; }
        @media (max-width: 768px) {
            .category-card { flex-direction: column; }
            .category-media { width: 100%; min-height: 220px; }
            .category-body { padding: 28px 22px; }
        }

        .news { background: var(--white); }
        .news-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .news-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all .3s ease;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-sm);
        }
        .news-item:hover {
            box-shadow: var(--shadow-md);
            border-color: rgba(22, 51, 107, .16);
            transform: translateY(-4px);
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 14px;
        }
        .news-meta time { font-size: 13px; color: var(--text-muted); display: flex; align-items: center; gap: 5px; }
        .news-meta time i { font-size: 12px; }
        .news-title { font-size: 1.2rem; margin-bottom: 10px; }
        .news-title a { color: var(--primary-dark); transition: color .2s ease; }
        .news-title a:hover { color: var(--accent-dark); }
        .news-desc { font-size: 14px; color: var(--text-muted); line-height: 1.8; flex: 1; margin-bottom: 18px; }
        .news-more {
            align-self: flex-start;
            font-size: 14px;
            font-weight: 700;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: gap .2s ease, color .2s ease;
        }
        .news-more:hover { color: var(--accent-dark); gap: 10px; }
        .empty-tip {
            grid-column: 1 / -1;
            text-align: center;
            color: var(--text-muted);
            font-size: 16px;
            background: var(--bg-light);
            border: 1px dashed var(--border);
            border-radius: var(--radius-md);
            padding: 48px 24px;
        }
        @media (max-width: 768px) {
            .news-list { grid-template-columns: 1fr; }
        }

        .process { background: url('/assets/images/backpic/back-2.png') center/cover fixed no-repeat; position: relative; padding: 88px 0; }
        .process::before { content: ""; position: absolute; inset: 0; background: rgba(16, 37, 77, .92); }
        .process .container { position: relative; z-index: 2; }
        .process .section-title { color: var(--white); }
        .process .section-sub { color: rgba(255, 255, 255, .8); }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 32px;
            margin-top: 48px;
        }
        .step-item {
            background: rgba(255, 255, 255, .08);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, .18);
            border-radius: var(--radius-md);
            padding: 40px 28px;
            text-align: center;
            transition: all .3s ease;
            position: relative;
        }
        .step-item:hover {
            background: rgba(255, 255, 255, .14);
            transform: translateY(-6px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, .2);
        }
        .step-number {
            width: 66px;
            height: 66px;
            margin: 0 auto 20px;
            border-radius: 50%;
            background: var(--accent);
            color: #101830;
            font-size: 22px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 0 6px rgba(217, 164, 65, .25);
        }
        .step-item h3 { color: var(--white); font-size: 1.2rem; margin-bottom: 12px; }
        .step-item p { color: rgba(255, 255, 255, .78); font-size: 14px; line-height: 1.8; }
        @media (max-width: 900px) {
            .steps-grid { grid-template-columns: 1fr; gap: 20px; }
        }

        .recommend { background: var(--bg-light); }
        .content-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 26px;
        }
        .content-card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all .3s ease;
            display: block;
            box-shadow: var(--shadow-sm);
        }
        .content-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-md);
            border-color: rgba(22, 51, 107, .16);
        }
        .content-image {
            width: 100%;
            height: 170px;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .content-card-inner { padding: 22px 20px 24px; }
        .content-card-inner h3 { font-size: 1.05rem; color: var(--primary-dark); margin-bottom: 8px; line-height: 1.45; }
        .content-card-inner p { font-size: 13px; color: var(--text-muted); line-height: 1.7; }
        .content-card:hover .content-image { transform: scale(1.04); }
        .content-image-wrap { overflow: hidden; width: 100%; height: 170px; }
        @media (max-width: 1024px) {
            .content-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 580px) {
            .content-grid { grid-template-columns: 1fr; }
            .content-image-wrap, .content-image { height: 200px; }
        }

        .faq { background: var(--white); }
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }
        .faq-item {
            background: var(--bg-light);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all .2s ease;
        }
        .faq-item:hover { border-color: rgba(217, 164, 65, .4); }
        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            cursor: pointer;
            list-style: none;
            font-weight: 700;
            font-size: 15px;
            color: var(--primary-dark);
            line-height: 1.5;
        }
        .faq-item summary::-webkit-details-marker { display: none; }
        .faq-item summary::after {
            content: "\f078";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            font-size: 13px;
            color: var(--accent-dark);
            transition: transform .3s ease;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            justify-content: center;
            width: 30px;
            height: 30px;
            background: rgba(217, 164, 65, .14);
            border-radius: 50%;
        }
        .faq-item[open] summary::after { transform: rotate(180deg); }
        .faq-content {
            padding-top: 14px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.85;
            border-top: 1px dashed var(--border);
            margin-top: 14px;
        }
        @media (max-width: 768px) {
            .faq-grid { grid-template-columns: 1fr; }
        }

        .cta {
            background: linear-gradient(135deg, var(--primary-dark), var(--primary));
            padding: 80px 0;
            position: relative;
            overflow: hidden;
        }
        .cta::before {
            content: "";
            position: absolute;
            right: -100px;
            top: -100px;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(217, 164, 65, .15);
            filter: blur(60px);
        }
        .cta::after {
            content: "";
            position: absolute;
            left: -60px;
            bottom: -60px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(255, 255, 255, .08);
            filter: blur(40px);
        }
        .cta-box { position: relative; z-index: 2; text-align: center; max-width: 720px; margin: 0 auto; }
        .cta-box .section-title { color: var(--white); font-size: clamp(1.6rem, 3vw, 2.4rem); margin-bottom: 16px; }
        .cta-box p { color: rgba(255, 255, 255, .85); font-size: 16px; line-height: 1.85; margin-bottom: 34px; }
        .cta-btn-group { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        @media (max-width: 580px) {
            .cta-btn-group { flex-direction: column; align-items: center; }
            .cta-btn-group .btn { width: 100%; max-width: 320px; }
        }

        .site-footer {
            background: #0c1a33;
            color: rgba(255, 255, 255, .7);
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .08);
        }
        .footer-brand { max-width: 360px; }
        .footer-brand .brand { margin-bottom: 16px; }
        .footer-brand .brand-icon { background: rgba(255, 255, 255, .12); color: var(--accent-light); box-shadow: none; }
        .footer-brand .brand-text { color: var(--white); }
        .footer-brand p { color: rgba(255, 255, 255, .6); line-height: 1.8; font-size: 14px; }
        .footer-col h4 {
            color: var(--white);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-col h4::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 28px;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .footer-col ul { display: flex; flex-direction: column; gap: 10px; }
        .footer-col a {
            color: rgba(255, 255, 255, .6);
            transition: all .2s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .footer-col a:hover { color: var(--accent-light); transform: translateX(4px); }
        .footer-col a i { font-size: 12px; }
        .footer-copy {
            padding: 24px 0;
            text-align: center;
            color: rgba(255, 255, 255, .4);
            font-size: 13px;
            display: flex;
            flex-direction: column;
            gap: 6px;
            align-items: center;
        }
        .footer-copy a { color: rgba(255, 255, 255, .5); }
        .footer-copy a:hover { color: var(--accent-light); }
        @media (max-width: 860px) {
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 36px; }
        }
        @media (max-width: 560px) {
            .footer-grid { grid-template-columns: 1fr; }
        }

/* roulang page: article */
:root {
    --primary: #172a45;
    --primary-dark: #0f1d33;
    --accent: #e8a33d;
    --accent-dark: #d18d2b;
    --bg: #f5f7fb;
    --bg-white: #ffffff;
    --text: #1f2a3d;
    --text-muted: #6b7a90;
    --border: #e3e8f1;
    --shadow-sm: 0 2px 8px rgba(23, 42, 69, 0.06);
    --shadow-md: 0 8px 24px rgba(23, 42, 69, 0.09);
    --shadow-lg: 0 16px 40px rgba(23, 42, 69, 0.12);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --container: 1240px;
    --space-section: 88px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

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

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

button,
input {
    font-family: inherit;
    font-size: inherit;
    border: none;
    outline: none;
    background: none;
    cursor: pointer;
}

ul,
ol {
    list-style: none;
}

h1, h2, h3, h4, h5 {
    line-height: 1.3;
    font-weight: 700;
    color: var(--text);
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 28px;
}

/* ========== 按钮 ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 15px;
    line-height: 1.2;
    transition: var(--transition);
    background: var(--accent);
    color: #fff;
    box-shadow: 0 6px 16px rgba(232, 163, 61, 0.35);
    border: 2px solid transparent;
}

.btn:hover {
    background: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(232, 163, 61, 0.4);
    color: #fff;
}

.btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 10px rgba(232, 163, 61, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
    box-shadow: none;
}

.btn-outline:hover {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 8px 20px rgba(23, 42, 69, 0.2);
}

.btn-light {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.18);
}

.btn-light:hover {
    background: var(--bg);
    color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(0, 0, 0, 0.24);
}

.btn-lg {
    padding: 15px 36px;
    font-size: 17px;
}

/* ========== 徽章 ========== */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 30px;
    background: rgba(232, 163, 61, 0.12);
    color: var(--accent-dark);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.badge-dark {
    background: rgba(23, 42, 69, 0.08);
    color: var(--primary);
}

/* ========== Header ========== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(23, 42, 69, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

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

.brand-icon {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), #2e4b73);
    color: var(--accent);
    border-radius: 12px;
    font-size: 19px;
    box-shadow: 0 6px 16px rgba(23, 42, 69, 0.22);
}

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

.main-nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-link {
    padding: 9px 18px;
    border-radius: 40px;
    font-size: 15px;
    color: var(--text-muted);
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.nav-link i {
    font-size: 14px;
    color: var(--accent);
}

.nav-link:hover {
    background: rgba(23, 42, 69, 0.05);
    color: var(--primary);
}

.nav-link.active {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 6px 16px rgba(23, 42, 69, 0.22);
}

.nav-link.active i {
    color: var(--accent);
}

.header-cta {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-cta .btn {
    padding: 10px 22px;
    font-size: 14px;
}

.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--primary);
    color: #fff;
    font-size: 18px;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: 0 4px 12px rgba(23, 42, 69, 0.2);
}

.nav-toggle:hover {
    background: var(--primary-dark);
    transform: rotate(90deg);
}

/* ========== 页面横幅 ========== */
.page-banner {
    background: linear-gradient(135deg, rgba(23, 42, 69, 0.97), rgba(30, 58, 95, 0.88)), url('/assets/images/backpic/back-2.png') center/cover no-repeat;
    padding: 72px 0 58px;
    position: relative;
}

.page-banner::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(23, 42, 69, 0.5) 100%);
    pointer-events: none;
}

.page-banner .container {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 28px;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.85);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.08);
    transition: var(--transition);
}

.breadcrumb a:hover {
    background: rgba(255, 255, 255, 0.18);
    color: var(--accent);
}

.breadcrumb i {
    font-size: 12px;
    color: var(--accent);
}

.article-head {
    max-width: 860px;
}

.article-head .badge {
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    backdrop-filter: blur(4px);
    padding: 6px 16px;
    font-size: 13px;
    margin-bottom: 18px;
}

.article-head h1 {
    color: #fff;
    font-size: clamp(26px, 4.2vw, 44px);
    font-weight: 800;
    line-height: 1.25;
    letter-spacing: 0.6px;
    margin-bottom: 20px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
}

.article-meta span {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.article-meta i {
    color: var(--accent);
    width: 15px;
    text-align: center;
}

/* ========== 正文区 ========== */
.article-main {
    padding: 72px 0 84px;
    background: var(--bg);
}

.article-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 44px;
    align-items: start;
}

.article-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 44px 48px;
    border: 1px solid rgba(255, 255, 255, 0.6);
}

.not-found {
    text-align: center;
    padding: 60px 20px;
}

.not-found i {
    font-size: 54px;
    color: var(--accent);
    margin-bottom: 18px;
    display: block;
}

.not-found h2 {
    font-size: 28px;
    margin-bottom: 12px;
}

.not-found p {
    color: var(--text-muted);
    margin-bottom: 28px;
}

.article-body {
    font-size: 16px;
    line-height: 1.9;
    color: #334155;
}

.article-body h2 {
    font-size: 26px;
    margin: 38px 0 18px;
    padding-left: 16px;
    border-left: 4px solid var(--accent);
    border-radius: 0 8px 8px 0;
}

.article-body h3 {
    font-size: 20px;
    margin: 30px 0 14px;
    color: var(--primary);
}

.article-body p {
    margin-bottom: 18px;
}

.article-body ul,
.article-body ol {
    margin: 16px 0 22px;
    padding-left: 24px;
}

.article-body ul li,
.article-body ol li {
    margin-bottom: 10px;
    position: relative;
    padding-left: 6px;
}

.article-body ul li::before {
    content: '\f058';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--accent);
    position: absolute;
    left: -18px;
    top: 0;
    font-size: 14px;
}

.article-body img {
    border-radius: var(--radius-md);
    margin: 24px 0;
    box-shadow: var(--shadow-md);
}

.article-body blockquote {
    margin: 28px 0;
    padding: 22px 28px;
    background: rgba(232, 163, 61, 0.08);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--accent);
    color: var(--primary);
    font-style: normal;
}

.article-body a {
    color: var(--accent-dark);
    font-weight: 600;
    border-bottom: 1px dashed var(--accent);
}

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

/* ========== 侧边栏 ========== */
.article-aside {
    display: flex;
    flex-direction: column;
    gap: 26px;
    position: sticky;
    top: 92px;
}

.aside-card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 28px;
    border: 1px solid rgba(232, 163, 61, 0.18);
    transition: var(--transition);
}

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

.aside-card h3 {
    font-size: 17px;
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 9px;
    padding-bottom: 14px;
    border-bottom: 1px dashed var(--border);
}

.aside-card h3 i {
    color: var(--accent);
}

.aside-link-list li {
    margin-bottom: 10px;
}

.aside-link-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-muted);
    font-size: 14px;
    padding: 9px 12px;
    border-radius: 10px;
    transition: var(--transition);
}

.aside-link-list a i {
    color: var(--accent);
    font-size: 13px;
    width: 16px;
    text-align: center;
}

.aside-link-list a:hover {
    background: rgba(232, 163, 61, 0.08);
    color: var(--primary);
    transform: translateX(4px);
}

.aside-cta {
    background: linear-gradient(135deg, var(--primary), #2e4b73);
    color: #fff;
    padding: 30px 26px;
    text-align: center;
    border-radius: var(--radius-lg);
    box-shadow: 0 14px 34px rgba(23, 42, 69, 0.3);
    position: relative;
    overflow: hidden;
}

.aside-cta::before {
    content: '';
    position: absolute;
    top: -50px;
    right: -50px;
    width: 130px;
    height: 130px;
    background: rgba(232, 163, 61, 0.2);
    border-radius: 50%;
}

.aside-cta h3 {
    color: #fff;
    font-size: 20px;
    margin-bottom: 10px;
    position: relative;
    z-index: 1;
}

.aside-cta p {
    color: rgba(255, 255, 255, 0.75);
    font-size: 14px;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
}

/* ========== 最新资讯 ========== */
.block {
    padding: var(--space-section) 0;
}

.block-alt {
    background: var(--bg-white);
}

.section-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 42px;
    flex-wrap: wrap;
}

.section-head h2 {
    font-size: clamp(24px, 3vw, 36px);
    font-weight: 800;
    color: var(--primary);
    position: relative;
    padding-bottom: 14px;
}

.section-head h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 52px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), #f0c173);
    border-radius: 4px;
}

.section-head h2 span {
    color: var(--accent);
}

.section-sub {
    color: var(--text-muted);
    font-size: 15px;
    max-width: 420px;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.news-card {
    background: var(--bg-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(232, 163, 61, 0.4);
}

.news-card .news-thumb {
    height: 190px;
    overflow: hidden;
    position: relative;
}

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

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

.news-card .news-thumb::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(23, 42, 69, 0.65));
}

.news-cat {
    position: absolute;
    top: 14px;
    left: 14px;
    z-index: 2;
    background: rgba(255, 255, 255, 0.92);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 30px;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(4px);
}

.news-body {
    padding: 22px 24px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-body h3 {
    font-size: 16px;
    margin-bottom: 10px;
    line-height: 1.5;
}

.news-body h3 a {
    color: var(--text);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-body h3 a:hover {
    color: var(--accent-dark);
}

.news-body p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
    flex: 1;
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 14px;
    font-size: 12px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    padding-top: 14px;
}

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

/* ========== CTA ========== */
.cta-block {
    position: relative;
    background: linear-gradient(135deg, rgba(23, 42, 69, 0.92), rgba(30, 58, 95, 0.82)), url('/assets/images/backpic/back-1.png') center/cover fixed no-repeat;
    padding: 86px 0;
    text-align: center;
    color: #fff;
}

.cta-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 20% 80%, rgba(232, 163, 61, 0.2), transparent 50%);
}

.cta-block .container {
    position: relative;
    z-index: 2;
}

.cta-block h2 {
    color: #fff;
    font-size: clamp(26px, 3.6vw, 40px);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta-block h2 span {
    color: var(--accent);
}

.cta-block p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 16px;
    max-width: 700px;
    margin: 0 auto 32px;
    line-height: 1.8;
}

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

.cta-card-row {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    margin-top: 48px;
}

.cta-mini-card {
    background: rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: 26px 20px;
    transition: var(--transition);
}

.cta-mini-card:hover {
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-5px);
}

.cta-mini-card i {
    font-size: 26px;
    color: var(--accent);
    margin-bottom: 10px;
}

.cta-mini-card h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 6px;
}

.cta-mini-card p {
    font-size: 13px;
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.7);
}

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

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 22px;
    margin-top: 40px;
}

.faq-item {
    background: var(--bg);
    border-radius: var(--radius-md);
    padding: 28px 30px;
    border: 1px solid var(--border);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.faq-item:hover {
    background: #fff;
    box-shadow: var(--shadow-md);
    border-color: rgba(232, 163, 61, 0.4);
    transform: translateY(-4px);
}

.faq-item h3 {
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding-right: 40px;
    margin-bottom: 8px;
}

.faq-item h3 i {
    color: var(--accent);
    width: 26px;
    height: 26px;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(232, 163, 61, 0.12);
    border-radius: 8px;
    font-size: 13px;
}

.faq-item p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
    padding-left: 38px;
    margin: 0;
}

.faq-item::after {
    content: '\f078';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 30px;
    right: 24px;
    color: var(--accent);
    font-size: 14px;
    transition: var(--transition);
}

.faq-item.open::after {
    transform: rotate(180deg);
}

/* ========== Footer ========== */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 66px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 52px;
    padding-bottom: 44px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

.footer-brand p {
    margin-top: 18px;
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
    max-width: 340px;
}

.footer-col h4 {
    color: #fff;
    font-size: 17px;
    margin-bottom: 22px;
    position: relative;
    padding-bottom: 12px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 3px;
    background: var(--accent);
    border-radius: 3px;
}

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

.footer-col ul a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.footer-col ul a i {
    color: var(--accent);
    font-size: 12px;
}

.footer-col ul a:hover {
    color: #fff;
    transform: translateX(6px);
}

.footer-copy {
    padding: 26px 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    flex-wrap: wrap;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

.footer-copy span:first-child {
    color: rgba(255, 255, 255, 0.6);
    font-weight: 500;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
    :root {
        --space-section: 64px;
    }

    .article-layout {
        grid-template-columns: 1fr;
    }

    .article-aside {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

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

    .cta-card-row {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-grid {
        grid-template-columns: 1.4fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        height: auto;
        min-height: 64px;
        padding-top: 10px;
        padding-bottom: 10px;
        flex-wrap: wrap;
    }

    .main-nav {
        display: none;
        width: 100%;
        flex-direction: column;
        gap: 16px;
        padding: 18px 0 12px;
        border-top: 1px solid var(--border);
        margin-top: 8px;
    }

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

    .nav-links {
        flex-direction: column;
        width: 100%;
        gap: 4px;
    }

    .nav-link {
        width: 100%;
        justify-content: center;
        padding: 12px;
    }

    .header-cta {
        width: 100%;
        justify-content: center;
    }

    .nav-toggle {
        display: inline-flex;
    }

    .page-banner {
        padding: 52px 0 42px;
    }

    .article-card {
        padding: 28px 22px;
    }

    .article-meta {
        gap: 12px;
    }

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

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

    .cta-card-row {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .faq-item p {
        padding-left: 0;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 36px;
    }

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

@media (max-width: 520px) {
    .container {
        padding: 0 18px;
    }

    :root {
        --space-section: 48px;
    }

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

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

    .article-head h1 {
        font-size: 24px;
    }

    .article-meta {
        gap: 10px;
        font-size: 13px;
    }

    .article-aside {
        grid-template-columns: 1fr;
    }

    .section-head {
        flex-direction: column;
        align-items: flex-start;
    }

    .section-head h2 {
        font-size: 24px;
    }

    .cta-block {
        padding: 48px 0;
    }

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

    .cta-mini-card {
        padding: 20px;
    }
}

/* roulang page: category1 */
:root {
    --primary: #1e5eff;
    --primary-dark: #1644c4;
    --primary-light: #e8efff;
    --accent: #f5a623;
    --accent-dark: #d98c0d;
    --bg: #f5f8fc;
    --bg-white: #ffffff;
    --text: #10202e;
    --text-weak: #5a6e7e;
    --border: #e3eaf2;
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 12px 32px rgba(16, 32, 46, 0.08);
    --shadow-lg: 0 20px 48px rgba(16, 32, 46, 0.12);
    --transition: all 0.3s ease;
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --container: 1200px;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--text);
    background: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    display: block;
    border-radius: var(--radius-sm);
}

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

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

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul,
ol {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header / Nav */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.94);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 4px 20px rgba(16, 32, 46, 0.04);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 24px;
}

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

.brand-icon {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    border-radius: 12px;
    font-size: 17px;
    box-shadow: 0 6px 16px rgba(30, 94, 255, 0.25);
}

.brand-text {
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.3px;
    color: var(--text);
    white-space: nowrap;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 4px;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 999px;
    color: var(--text-weak);
    font-weight: 500;
    font-size: 15px;
    white-space: nowrap;
    transition: var(--transition);
}

.nav-link i {
    font-size: 14px;
}

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

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

.header-cta {
    display: flex;
    align-items: center;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 26px;
    border-radius: 999px;
    font-size: 15px;
    font-weight: 600;
    line-height: 1;
    text-decoration: none;
    transition: var(--transition);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-2px);
}

.btn:active {
    transform: translateY(0);
}

.btn:focus-visible {
    outline: 3px solid rgba(30, 94, 255, 0.35);
    outline-offset: 3px;
}

.btn-accent {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 6px 18px rgba(245, 166, 35, 0.3);
}

.btn-accent:hover {
    background: var(--accent-dark);
    border-color: var(--accent-dark);
    color: #fff;
    box-shadow: 0 10px 26px rgba(245, 166, 35, 0.4);
}

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

.btn-outline:hover {
    border-color: #fff;
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.btn-light {
    background: #fff;
    color: var(--primary);
    border-color: #fff;
    box-shadow: 0 6px 18px rgba(16, 32, 46, 0.12);
}

.btn-light:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary-light);
    box-shadow: 0 10px 24px rgba(16, 32, 46, 0.16);
}

.nav-toggle {
    display: none;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--bg);
    color: var(--text);
    font-size: 18px;
    transition: var(--transition);
}

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

.nav-toggle:focus-visible {
    outline: 3px solid rgba(30, 94, 255, 0.35);
    outline-offset: 2px;
}

/* Page Hero */
.page-hero {
    position: relative;
    padding: 110px 0 90px;
    background: linear-gradient(135deg, rgba(10, 22, 42, 0.88), rgba(30, 94, 255, 0.72)), url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    color: #fff;
}

.page-hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 20% 50%, rgba(30, 94, 255, 0.2), transparent 60%);
    pointer-events: none;
}

.page-hero .container {
    position: relative;
    z-index: 2;
}

.hero-breadcrumb {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 22px;
}

.hero-breadcrumb a {
    color: rgba(255, 255, 255, 0.7);
    transition: var(--transition);
}

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

.hero-breadcrumb span {
    color: rgba(255, 255, 255, 0.4);
}

.hero-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.14);
    border: 1px solid rgba(255, 255, 255, 0.22);
    padding: 8px 18px;
    border-radius: 999px;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    backdrop-filter: blur(6px);
    margin-bottom: 18px;
}

.page-hero h1 {
    font-size: 42px;
    line-height: 1.25;
    font-weight: 800;
    letter-spacing: 0.5px;
    margin-bottom: 18px;
    max-width: 760px;
}

.page-hero .hero-desc {
    font-size: 17px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.85);
    max-width: 680px;
    margin-bottom: 32px;
}

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

/* Section */
.section {
    padding: 80px 0;
}

.section-alt {
    background: var(--bg);
}

.section-head {
    text-align: center;
    max-width: 740px;
    margin: 0 auto 48px;
}

.section-head .tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    padding: 6px 16px;
    border-radius: 999px;
    margin-bottom: 14px;
    letter-spacing: 0.3px;
}

.section-head h2 {
    font-size: 32px;
    line-height: 1.3;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 12px;
}

.section-head p {
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-weak);
}

/* Card Grid / Login Methods */
.card-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

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

.login-method-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(30, 94, 255, 0.25);
}

.method-cover {
    height: 200px;
    overflow: hidden;
    position: relative;
}

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

.login-method-card:hover .method-cover img {
    transform: scale(1.06);
}

.method-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(16, 32, 46, 0.15), transparent 60%);
}

.method-body {
    padding: 26px 24px 28px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.method-body h3 {
    font-size: 19px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.method-body h3 i {
    color: var(--primary);
    font-size: 18px;
}

.method-body p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--text-weak);
    margin-bottom: 18px;
    flex: 1;
}

.method-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary);
    transition: var(--transition);
}

.method-link:hover {
    gap: 12px;
    color: var(--primary-dark);
}

.method-link i {
    font-size: 13px;
}

/* Steps */
.steps-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
}

.step-item {
    position: relative;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 36px 26px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.step-item::before {
    counter-increment: step;
    content: "0" counter(step);
    display: block;
    font-size: 40px;
    font-weight: 800;
    line-height: 1;
    color: var(--primary-light);
    margin-bottom: 14px;
    letter-spacing: -1px;
}

.step-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 16px;
    font-size: 22px;
}

.step-item h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 8px;
}

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

/* Scenarios */
.scenario-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.scenario-item {
    display: flex;
    gap: 20px;
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 26px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.scenario-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}

.scenario-icon {
    flex-shrink: 0;
    width: 54px;
    height: 54px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    border-radius: 14px;
    color: #fff;
    font-size: 20px;
    box-shadow: 0 8px 18px rgba(30, 94, 255, 0.28);
}

.scenario-content h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

.scenario-content p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-weak);
    margin-bottom: 10px;
}

.badge {
    display: inline-block;
    padding: 4px 14px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    background: var(--primary-light);
    border-radius: 999px;
    letter-spacing: 0.3px;
}

.badge-secondary {
    background: rgba(245, 166, 35, 0.15);
    color: var(--accent-dark);
}

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

.stat-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.stat-number {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

.stat-label {
    font-size: 14px;
    color: var(--text-weak);
}

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

.safety-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 28px 22px;
    text-align: center;
    transition: var(--transition);
}

.safety-item:hover {
    border-color: rgba(30, 94, 255, 0.3);
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.safety-icon {
    width: 50px;
    height: 50px;
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    font-size: 20px;
}

.safety-item p {
    font-size: 14px;
    line-height: 1.65;
    color: var(--text);
    font-weight: 500;
}

/* FAQ */
.faq-list {
    max-width: 840px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 16px;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 14px rgba(16, 32, 46, 0.04);
}

.faq-item:hover {
    border-color: rgba(30, 94, 255, 0.25);
    box-shadow: var(--shadow);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    width: 100%;
    padding: 22px 26px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    text-align: left;
    transition: var(--transition);
}

.faq-question i {
    font-size: 14px;
    color: var(--text-weak);
    transition: transform 0.35s ease;
    flex-shrink: 0;
}

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

.faq-item.active .faq-question i {
    transform: rotate(180deg);
    color: var(--primary);
}

.faq-answer {
    padding: 0 26px;
    max-height: 0;
    overflow: hidden;
    color: var(--text-weak);
    font-size: 15px;
    line-height: 1.75;
    transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq-item.active .faq-answer {
    max-height: 320px;
    padding-bottom: 22px;
}

/* CTA */
.cta-section {
    background: linear-gradient(135deg, rgba(22, 68, 196, 0.96), rgba(30, 94, 255, 0.9)), url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    color: #fff;
    padding: 90px 0;
    text-align: center;
    position: relative;
}

.cta-section .container {
    position: relative;
    z-index: 2;
}

.cta-section h2 {
    font-size: 34px;
    font-weight: 800;
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.cta-section p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.85);
    max-width: 580px;
    margin: 0 auto 28px;
}

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

/* Footer */
.site-footer {
    background: #0a1526;
    color: rgba(255, 255, 255, 0.75);
    padding: 64px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .brand {
    margin-bottom: 14px;
}

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

.footer-brand .brand-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    box-shadow: 0 6px 18px rgba(245, 166, 35, 0.3);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.5);
    max-width: 360px;
}

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

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

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

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

.footer-col ul li a i.fa-angle-right {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.3);
}

.footer-copy {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 22px 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.35);
}

/* Responsive */
@media (max-width: 1024px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

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

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

    .page-hero h1 {
        font-size: 36px;
    }

    .section-head h2 {
        font-size: 28px;
    }
}

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

    .header-inner {
        height: 64px;
    }

    .nav-toggle {
        display: inline-flex;
        z-index: 105;
    }

    .main-nav {
        position: fixed;
        top: 0;
        right: 0;
        width: 300px;
        height: 100vh;
        background: #fff;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 84px 24px 24px;
        box-shadow: -16px 0 48px rgba(16, 32, 46, 0.15);
        transform: translateX(100%);
        transition: transform 0.35s ease;
        z-index: 104;
        overflow-y: auto;
    }

    .main-nav.open {
        transform: translateX(0);
    }

    .nav-links {
        flex-direction: column;
        align-items: stretch;
        gap: 4px;
        margin-bottom: 20px;
    }

    .nav-link {
        padding: 14px 18px;
        font-size: 16px;
    }

    .header-cta {
        width: 100%;
    }

    .header-cta .btn {
        width: 100%;
        padding: 14px 20px;
    }

    .page-hero {
        padding: 76px 0 64px;
    }

    .page-hero h1 {
        font-size: 30px;
    }

    .page-hero .hero-desc {
        font-size: 15px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .section {
        padding: 60px 0;
    }

    .section-head {
        margin-bottom: 36px;
    }

    .section-head h2 {
        font-size: 24px;
    }

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

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

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

    .scenario-item {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .stat-card {
        padding: 24px 16px;
    }

    .stat-number {
        font-size: 28px;
    }

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

    .cta-section {
        padding: 64px 0;
    }

    .cta-section h2 {
        font-size: 26px;
    }

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

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

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

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

@media (max-width: 520px) {
    .brand-text {
        font-size: 17px;
    }

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

    .page-hero h1 {
        font-size: 26px;
    }

    .hero-tag {
        font-size: 13px;
    }

    .section-head h2 {
        font-size: 22px;
    }

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

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

    .faq-question {
        font-size: 15px;
        padding: 18px 20px;
    }

    .faq-answer {
        padding: 0 20px;
        font-size: 14px;
    }

    .faq-item.active .faq-answer {
        padding-bottom: 18px;
    }

    .footer-copy {
        font-size: 12px;
    }
}