/* roulang page: index */
*,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', system-ui, sans-serif;
            background: #f6f8fc;
            color: #4a5468;
            line-height: 1.75;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        input,
        textarea {
            font-family: inherit;
            outline: none;
        }

        .container-x {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 96px 0;
        }

        /* ---------- Header/Nav ---------- */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(15, 30, 61, 0.06);
            transition: box-shadow .3s ease;
        }
        .site-header .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 76px;
        }
        .brand-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 22px;
            font-weight: 800;
            color: #0f1e3d;
            letter-spacing: 0.5px;
            transition: opacity .2s;
        }
        .brand-logo:hover {
            opacity: 0.85;
        }
        .brand-logo .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: linear-gradient(135deg, #0f1e3d 0%, #1a2f54 60%, #d9a33d 100%);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-links>li {
            list-style: none;
            position: relative;
        }
        .nav-links>li>a {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: #4a5468;
            transition: all .2s ease;
        }
        .nav-links>li>a:hover {
            background: rgba(15, 30, 61, 0.05);
            color: #0f1e3d;
        }
        .nav-links>li>a.active {
            background: rgba(15, 30, 61, 0.08);
            color: #0f1e3d;
            font-weight: 600;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 14px;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 12px;
            background: linear-gradient(135deg, #0f1e3d, #1a2f54);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            transition: all .3s cubic-bezier(.4, 0, .2, 1);
            box-shadow: 0 4px 14px rgba(15, 30, 61, 0.15);
            border: none;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(15, 30, 61, 0.22);
        }
        .btn-primary:active {
            transform: translateY(0px) scale(0.98);
        }
        .btn-gold {
            background: linear-gradient(135deg, #d9a33d, #f0c460);
            color: #0f1e3d;
            box-shadow: 0 4px 14px rgba(217, 163, 61, 0.28);
        }
        .btn-gold:hover {
            box-shadow: 0 8px 24px rgba(217, 163, 61, 0.4);
        }
        .btn-outline {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 12px;
            border: 2px solid rgba(255, 255, 255, 0.4);
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            transition: all .3s ease;
            background: transparent;
        }
        .btn-outline:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, 0.1);
        }
        .mobile-menu-btn {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            border: 1px solid rgba(0, 0, 0, 0.08);
            background: #fff;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #0f1e3d;
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid rgba(0, 0, 0, 0.06);
            padding: 16px 24px 20px;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        }
        .mobile-menu a {
            display: block;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: #1a2233;
            transition: background .2s;
        }
        .mobile-menu a:hover {
            background: #f0f2f7;
        }
        .mobile-menu a.active {
            background: rgba(15, 30, 61, 0.08);
            color: #0f1e3d;
            font-weight: 600;
        }

        /* ---------- Hero ---------- */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding: 140px 0 80px;
            background: url('/assets/images/backpic/back-1.png') center center/cover no-repeat;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(15, 30, 61, 0.95) 0%, rgba(15, 30, 61, 0.75) 45%, rgba(26, 47, 84, 0.55) 100%);
        }
        .hero-shadow {
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(217, 163, 61, 0.18), transparent 50%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 64px;
            align-items: center;
        }
        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 16px;
            border-radius: 100px;
            background: rgba(255, 255, 255, 0.12);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #f0c460;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(4px);
        }
        .hero-title {
            font-size: 48px;
            line-height: 1.2;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
            margin: 24px 0 20px;
        }
        .hero-title span {
            color: #f0c460;
        }
        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.78);
            max-width: 540px;
            margin-bottom: 36px;
        }
        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 48px;
        }
        .hero-stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            max-width: 460px;
            padding-top: 32px;
            border-top: 1px solid rgba(255, 255, 255, 0.15);
        }
        .hero-stat {
            text-align: left;
        }
        .hero-stat .num {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
        }
        .hero-stat .label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: 4px;
        }
        .hero-card-panel {
            position: relative;
            z-index: 2;
        }
        .glass-card {
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 24px;
            padding: 32px;
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.2);
        }
        .glass-card .status-row {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 20px;
        }
        .status-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #34d399;
            box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.2);
        }
        .glass-card .status-label {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
        }
        .glass-card .service-items {
            display: grid;
            gap: 12px;
        }
        .service-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 14px 16px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s, transform .3s;
        }
        .service-item:hover {
            background: rgba(255, 255, 255, 0.14);
            transform: translateX(4px);
        }
        .service-item i {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 17px;
            background: rgba(217, 163, 61, 0.16);
            color: #f0c460;
        }
        .service-item .svc-info {
            flex: 1;
        }
        .service-item .svc-name {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
        }
        .service-item .svc-desc {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            margin-top: 2px;
        }
        .service-item .svc-status {
            font-size: 12px;
            font-weight: 600;
            color: #34d399;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* ---------- Section Common ---------- */
        .section-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            border-radius: 100px;
            background: rgba(217, 163, 61, 0.12);
            color: #b07d2b;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 1px;
        }
        .section-title {
            font-size: 36px;
            font-weight: 800;
            color: #0f1e3d;
            line-height: 1.25;
            margin-top: 16px;
        }
        .section-desc {
            font-size: 16px;
            line-height: 1.8;
            color: #4a5468;
            max-width: 600px;
            margin-top: 12px;
        }
        .section-head-center {
            text-align: center;
            max-width: 700px;
            margin: 0 auto 56px;
        }
        .section-head-left {
            max-width: 700px;
            margin-bottom: 48px;
        }

        /* ---------- Feature Cards ---------- */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border-radius: 20px;
            padding: 32px 28px;
            border: 1px solid rgba(15, 30, 61, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .feature-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 36px rgba(15, 30, 61, 0.1);
        }
        .feature-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: 20px;
        }
        .feature-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #0f1e3d;
            margin-bottom: 10px;
        }
        .feature-card p {
            font-size: 14px;
            line-height: 1.7;
            color: #4a5468;
        }

        /* ---------- Category Cards ---------- */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .category-card {
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid rgba(15, 30, 61, 0.05);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
            transition: transform .35s ease, box-shadow .35s ease;
        }
        .category-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 20px 44px rgba(15, 30, 61, 0.1);
        }
        .category-card .cover {
            position: relative;
            height: 200px;
            overflow: hidden;
        }
        .category-card .cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .category-card:hover .cover img {
            transform: scale(1.05);
        }
        .category-card .cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(to top, rgba(15, 30, 61, 0.2), transparent 50%);
        }
        .category-card .cover .badge {
            position: absolute;
            top: 16px;
            left: 16px;
            z-index: 2;
            padding: 6px 14px;
            border-radius: 100px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(4px);
            font-size: 12px;
            font-weight: 600;
            color: #0f1e3d;
        }
        .category-card .body {
            padding: 24px 24px 28px;
        }
        .category-card .body h3 {
            font-size: 19px;
            font-weight: 700;
            color: #0f1e3d;
            margin-bottom: 8px;
        }
        .category-card .body p {
            font-size: 14px;
            line-height: 1.6;
            color: #4a5468;
            margin-bottom: 16px;
        }
        .category-card .body .more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: #d9a33d;
            transition: gap .3s;
        }
        .category-card .body .more-link:hover {
            gap: 12px;
        }

        /* ---------- News List ---------- */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .news-card {
            display: flex;
            gap: 24px;
            padding: 24px;
            background: #fff;
            border-radius: 18px;
            border: 1px solid rgba(15, 30, 61, 0.04);
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.03);
            transition: box-shadow .3s, transform .3s;
            align-items: flex-start;
        }
        .news-card:hover {
            box-shadow: 0 12px 30px rgba(15, 30, 61, 0.08);
            transform: translateY(-3px);
        }
        .news-card .news-cover {
            width: 180px;
            height: 120px;
            border-radius: 14px;
            object-fit: cover;
            flex-shrink: 0;
        }
        .news-card .news-content {
            flex: 1;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #8a94a6;
            margin-bottom: 10px;
        }
        .news-card .news-meta .cat {
            padding: 4px 10px;
            border-radius: 6px;
            background: rgba(217, 163, 61, 0.12);
            color: #b07d2b;
            font-weight: 600;
            font-size: 12px;
        }
        .news-card h3 {
            font-size: 18px;
            font-weight: 700;
            color: #0f1e3d;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-card p {
            font-size: 14px;
            color: #4a5468;
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* ---------- Stats Band ---------- */
        .stats-band {
            background: url('/assets/images/backpic/back-2.png') center center/cover no-repeat;
            position: relative;
            border-radius: 32px;
            overflow: hidden;
            padding: 64px 48px;
        }
        .stats-band::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 30, 61, 0.92);
        }
        .stats-band .stats-grid {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }
        .stats-band .stat-item {
            padding: 20px;
            border-radius: 20px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.08);
            transition: background .3s;
        }
        .stats-band .stat-item:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        .stats-band .stat-item .s-num {
            font-size: 40px;
            font-weight: 800;
            color: #f0c460;
            line-height: 1.2;
        }
        .stats-band .stat-item .s-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-top: 8px;
        }

        /* ---------- Process ---------- */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 28px;
            counter-reset: step;
        }
        .process-step {
            position: relative;
            padding: 36px 28px 32px;
            background: #fff;
            border-radius: 20px;
            border: 1px solid rgba(15, 30, 61, 0.04);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.03);
            transition: transform .3s ease, box-shadow .3s ease;
        }
        .process-step:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 36px rgba(15, 30, 61, 0.1);
        }
        .process-step::before {
            content: counter(step);
            counter-increment: step;
            position: absolute;
            top: -16px;
            left: 28px;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, #d9a33d, #f0c460);
            color: #0f1e3d;
            font-size: 16px;
            font-weight: 800;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(217, 163, 61, 0.4);
        }
        .process-step .step-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            background: rgba(15, 30, 61, 0.06);
            color: #0f1e3d;
            margin-bottom: 18px;
        }
        .process-step h3 {
            font-size: 17px;
            font-weight: 700;
            color: #0f1e3d;
            margin-bottom: 8px;
        }
        .process-step p {
            font-size: 14px;
            color: #4a5468;
            line-height: 1.6;
        }

        /* ---------- FAQ ---------- */
        .faq-wrap {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: 16px;
            border: 1px solid rgba(15, 30, 61, 0.06);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s;
        }
        .faq-item:hover {
            box-shadow: 0 8px 24px rgba(15, 30, 61, 0.08);
        }
        .faq-item.open {
            border-color: rgba(217, 163, 61, 0.3);
        }
        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: #0f1e3d;
        }
        .faq-q .faq-icon {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: rgba(15, 30, 61, 0.05);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            transition: transform .3s;
            flex-shrink: 0;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(217, 163, 61, 0.15);
            color: #b07d2b;
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease;
            padding: 0 24px;
            font-size: 15px;
            line-height: 1.75;
            color: #4a5468;
        }
        .faq-item.open .faq-a {
            max-height: 300px;
            padding: 0 24px 20px;
        }

        /* ---------- CTA ---------- */
        .cta-section {
            position: relative;
            overflow: hidden;
        }
        .cta-card {
            background: linear-gradient(135deg, #0f1e3d 0%, #1a2f54 100%);
            border-radius: 32px;
            padding: 64px 56px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-card::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(217, 163, 61, 0.2);
            filter: blur(60px);
        }
        .cta-card::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(240, 196, 96, 0.12);
            filter: blur(50px);
        }
        .cta-card h2 {
            position: relative;
            z-index: 1;
            font-size: 34px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 16px;
        }
        .cta-card p {
            position: relative;
            z-index: 1;
            font-size: 16px;
            color: rgba(255, 255, 255, 0.8);
            max-width: 480px;
            margin: 0 auto 32px;
        }
        .cta-btn-wrap {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }

        /* ---------- Footer ---------- */
        .site-footer {
            background: #0c1830;
            color: rgba(255, 255, 255, 0.7);
            padding-top: 64px;
            padding-bottom: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-grid .f-brand {
            font-size: 22px;
            font-weight: 800;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 16px;
        }
        .footer-grid .f-brand .logo-mark {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, #d9a33d, #f0c460);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            color: #0f1e3d;
        }
        .footer-grid .f-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.55);
            max-width: 300px;
        }
        .footer-grid h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 20px;
        }
        .footer-grid .f-links {
            display: grid;
            gap: 10px;
        }
        .footer-grid .f-links a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color .2s;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .footer-grid .f-links a:hover {
            color: #f0c460;
        }
        .footer-grid .f-contact {
            display: grid;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-grid .f-contact i {
            width: 32px;
            text-align: center;
            color: #d9a33d;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }

        /* ---------- Back to top ---------- */
        .backtop {
            position: fixed;
            bottom: 32px;
            right: 32px;
            width: 46px;
            height: 46px;
            border-radius: 14px;
            background: #0f1e3d;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            z-index: 99;
            transition: transform .3s, opacity .3s;
            opacity: 0;
            pointer-events: none;
        }
        .backtop.show {
            opacity: 1;
            pointer-events: auto;
        }
        .backtop:hover {
            transform: translateY(-4px);
        }

        /* ---------- Responsive ---------- */
        @media (max-width: 1024px) {
            .nav-links,
            .nav-cta {
                display: none;
            }
            .mobile-menu-btn {
                display: flex;
            }
            .mobile-menu.open {
                display: block;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-card-panel {
                max-width: 520px;
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .process-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-band .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section-pad {
                padding: 64px 0;
            }
            .hero-section {
                padding: 120px 0 60px;
            }
            .hero-title {
                font-size: 32px;
            }
            .hero-subtitle {
                font-size: 15px;
            }
            .container-x {
                padding: 0 20px;
            }
            .section-title {
                font-size: 28px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .category-grid {
                grid-template-columns: 1fr;
            }
            .news-card {
                flex-direction: column;
            }
            .news-card .news-cover {
                width: 100%;
                height: 160px;
            }
            .process-grid {
                grid-template-columns: 1fr;
            }
            .stats-band {
                padding: 40px 24px;
            }
            .stats-band .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 16px;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .cta-card h2 {
                font-size: 26px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-stats {
                grid-template-columns: repeat(3, 1fr);
                gap: 12px;
            }
            .hero-stat .num {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .hero-title {
                font-size: 26px;
            }
            .hero-btns {
                flex-direction: column;
                align-items: stretch;
            }
            .hero-btns .btn-primary,
            .hero-btns .btn-outline {
                width: 100%;
            }
            .hero-stats {
                grid-template-columns: 1fr;
            }
            .stats-band .stats-grid {
                grid-template-columns: 1fr;
            }
            .news-card .news-cover {
                height: 130px;
            }
            .cta-card h2 {
                font-size: 22px;
            }
            .cta-btn-wrap {
                flex-direction: column;
                align-items: stretch;
            }
            .cta-btn-wrap .btn-primary {
                width: 100%;
            }
            .backtop {
                bottom: 20px;
                right: 20px;
            }
        }

        /* focus accessible */
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(217, 163, 61, 0.5);
            outline-offset: 2px;
        }

/* roulang page: category1 */
:root {
        --primary: #0f1a2d;
        --primary-light: #1e2e4a;
        --accent: #d4a853;
        --accent-hover: #c0933c;
        --bg-light: #f4f5fa;
        --text-dark: #1a2333;
        --text-muted: #64748b;
        --border: #e2e8f0;
        --radius-sm: 8px;
        --radius-md: 16px;
        --radius-lg: 28px;
        --shadow-sm: 0 2px 10px rgba(15, 26, 45, .06);
        --shadow-md: 0 10px 30px rgba(15, 26, 45, .08);
        --shadow-lg: 0 20px 50px rgba(15, 26, 45, .14);
    }

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

    html {
        scroll-behavior: smooth;
    }

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

    .container-x {
        max-width: 1280px;
        margin: 0 auto;
        padding: 0 24px;
    }

    a {
        text-decoration: none;
        color: inherit;
        transition: color .3s ease;
    }

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

    /* ===== Header & Nav ===== */
    .site-header {
        position: sticky;
        top: 0;
        z-index: 100;
        background: rgba(15, 26, 45, .96);
        backdrop-filter: blur(12px);
        border-bottom: 1px solid rgba(255, 255, 255, .06);
        box-shadow: 0 4px 24px rgba(0, 0, 0, .18);
    }

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

    .brand-logo {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.25rem;
        font-weight: 700;
        color: #fff;
        letter-spacing: .5px;
        white-space: nowrap;
    }

    .logo-mark {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        border-radius: 10px;
        background: linear-gradient(135deg, var(--accent), #e8c67a);
        color: var(--primary);
        font-size: 1rem;
        box-shadow: 0 4px 12px rgba(212, 168, 83, .35);
        flex-shrink: 0;
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 8px;
        list-style: none;
        margin: 0;
    }

    .nav-links a {
        display: inline-flex;
        align-items: center;
        padding: 9px 20px;
        border-radius: 999px;
        font-size: .95rem;
        font-weight: 500;
        color: rgba(255, 255, 255, .78);
        transition: all .3s ease;
        white-space: nowrap;
    }

    .nav-links a:hover {
        color: #fff;
        background: rgba(255, 255, 255, .08);
    }

    .nav-links a.active {
        color: #fff;
        background: rgba(212, 168, 83, .18);
        box-shadow: inset 0 0 0 1px rgba(212, 168, 83, .35);
    }

    .nav-cta {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .btn-primary {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 999px;
        font-size: .9rem;
        font-weight: 600;
        cursor: pointer;
        border: none;
        transition: all .3s ease;
        white-space: nowrap;
    }

    .btn-gold {
        background: linear-gradient(135deg, #dcb56a, var(--accent));
        color: var(--primary);
        box-shadow: 0 4px 16px rgba(212, 168, 83, .3);
    }

    .btn-gold:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 24px rgba(212, 168, 83, .45);
        color: var(--primary);
        filter: brightness(1.05);
    }

    .btn-gold:active {
        transform: translateY(0);
        box-shadow: 0 2px 8px rgba(212, 168, 83, .3);
    }

    .btn-outline {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        padding: 10px 24px;
        border-radius: 999px;
        font-size: .9rem;
        font-weight: 600;
        cursor: pointer;
        border: 2px solid rgba(212, 168, 83, .5);
        background: transparent;
        color: var(--accent);
        transition: all .3s ease;
        white-space: nowrap;
    }

    .btn-outline:hover {
        border-color: var(--accent);
        background: rgba(212, 168, 83, .08);
        color: var(--accent-hover);
        transform: translateY(-2px);
    }

    .mobile-menu-btn {
        display: none;
        background: none;
        border: none;
        color: #fff;
        font-size: 1.5rem;
        cursor: pointer;
        padding: 8px;
        border-radius: 8px;
        transition: background .2s;
    }

    .mobile-menu-btn:hover {
        background: rgba(255, 255, 255, .1);
    }

    .mobile-menu {
        display: none;
        flex-direction: column;
        gap: 4px;
        padding: 16px 24px 20px;
        background: var(--primary);
        border-top: 1px solid rgba(255, 255, 255, .06);
    }

    .mobile-menu a {
        display: flex;
        align-items: center;
        gap: 10px;
        padding: 12px 16px;
        border-radius: 10px;
        color: rgba(255, 255, 255, .85);
        font-size: 1rem;
        font-weight: 500;
        transition: all .2s;
    }

    .mobile-menu a:hover {
        background: rgba(255, 255, 255, .08);
        color: #fff;
    }

    .mobile-menu a.active {
        background: rgba(212, 168, 83, .15);
        color: var(--accent);
        box-shadow: inset 0 0 0 1px rgba(212, 168, 83, .3);
    }

    .mobile-menu.open {
        display: flex;
    }

    /* ===== Hero (Category Banner) ===== */
    .category-hero {
        position: relative;
        padding: 96px 0 80px;
        background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
        color: #fff;
        overflow: hidden;
    }

    .category-hero::before {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(120deg, rgba(10, 18, 31, .94), rgba(15, 26, 45, .82), rgba(30, 46, 74, .72));
        z-index: 1;
    }

    .category-hero::after {
        content: '';
        position: absolute;
        top: 0;
        right: 0;
        width: 500px;
        height: 500px;
        background: radial-gradient(circle, rgba(212, 168, 83, .2), transparent 70%);
        z-index: 1;
    }

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

    .hero-breadcrumb {
        display: flex;
        align-items: center;
        gap: 8px;
        font-size: .85rem;
        color: rgba(255, 255, 255, .65);
        margin-bottom: 24px;
    }

    .hero-breadcrumb a {
        color: rgba(255, 255, 255, .65);
        transition: color .3s;
    }

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

    .hero-breadcrumb i {
        font-size: .7rem;
    }

    .category-hero h1 {
        font-size: clamp(2rem, 5vw, 3.2rem);
        font-weight: 800;
        line-height: 1.2;
        margin-bottom: 18px;
        letter-spacing: 1px;
    }

    .category-hero h1 .text-gold {
        color: var(--accent);
    }

    .category-hero .hero-desc {
        max-width: 680px;
        font-size: 1.1rem;
        line-height: 1.8;
        color: rgba(255, 255, 255, .82);
        margin-bottom: 36px;
    }

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

    .hero-stat-row {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
        max-width: 520px;
        margin-top: 48px;
        padding-top: 32px;
        border-top: 1px solid rgba(255, 255, 255, .12);
    }

    .hero-stat {
        text-align: left;
    }

    .hero-stat .num {
        font-size: 1.5rem;
        font-weight: 700;
        color: var(--accent);
    }

    .hero-stat .label {
        font-size: .8rem;
        color: rgba(255, 255, 255, .6);
        margin-top: 2px;
    }

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

    .section-alt {
        background: #fff;
    }

    .section-header {
        text-align: center;
        max-width: 700px;
        margin: 0 auto 56px;
    }

    .section-tag {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        background: rgba(212, 168, 83, .12);
        color: var(--accent-hover);
        font-size: .8rem;
        font-weight: 600;
        padding: 6px 18px;
        border-radius: 999px;
        margin-bottom: 14px;
        letter-spacing: 1px;
        text-transform: uppercase;
    }

    .section-header h2 {
        font-size: clamp(1.6rem, 3vw, 2.3rem);
        font-weight: 800;
        color: var(--text-dark);
        line-height: 1.3;
        margin-bottom: 12px;
    }

    .section-header p {
        color: var(--text-muted);
        font-size: 1.05rem;
        line-height: 1.7;
    }

    /* ===== Overview Cards ===== */
    .overview-grid {
        display: grid;
        grid-template-columns: repeat(4, 1fr);
        gap: 24px;
    }

    .overview-card {
        background: #fff;
        border-radius: var(--radius-md);
        padding: 32px 24px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: all .35s ease;
        position: relative;
        overflow: hidden;
    }

    .overview-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 3px;
        background: linear-gradient(90deg, var(--accent), #e8c67a);
        opacity: 0;
        transition: opacity .3s;
    }

    .overview-card:hover {
        transform: translateY(-6px);
        box-shadow: var(--shadow-md);
        border-color: rgba(212, 168, 83, .3);
    }

    .overview-card:hover::before {
        opacity: 1;
    }

    .overview-card .icon-wrap {
        width: 54px;
        height: 54px;
        border-radius: 14px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.3rem;
        margin-bottom: 18px;
        background: linear-gradient(135deg, rgba(212, 168, 83, .12), rgba(212, 168, 83, .04));
        color: var(--accent);
        border: 1px solid rgba(212, 168, 83, .2);
    }

    .overview-card h3 {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 8px;
        color: var(--text-dark);
    }

    .overview-card p {
        font-size: .88rem;
        color: var(--text-muted);
        line-height: 1.65;
    }

    /* ===== Steps ===== */
    .steps-section {
        background: linear-gradient(160deg, #0f1a2d, #16283f);
        color: #fff;
        padding: 90px 0;
    }

    .steps-section .section-header h2 {
        color: #fff;
    }

    .steps-section .section-header p {
        color: rgba(255, 255, 255, .7);
    }

    .steps-section .section-tag {
        background: rgba(212, 168, 83, .15);
        color: var(--accent);
    }

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

    .steps-grid::before {
        content: '';
        position: absolute;
        top: 44px;
        left: 10%;
        right: 10%;
        height: 2px;
        background: linear-gradient(90deg, rgba(212, 168, 83, .1), rgba(212, 168, 83, .5), rgba(212, 168, 83, .1));
        border-radius: 2px;
    }

    .step-card {
        position: relative;
        text-align: center;
        padding: 0 16px;
    }

    .step-num {
        width: 88px;
        height: 88px;
        margin: 0 auto 20px;
        border-radius: 50%;
        background: linear-gradient(135deg, rgba(212, 168, 83, .9), rgba(230, 197, 113, .7));
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.8rem;
        font-weight: 800;
        color: var(--primary);
        box-shadow: 0 8px 30px rgba(212, 168, 83, .3);
        position: relative;
        z-index: 2;
        border: 4px solid rgba(15, 26, 45, .4);
    }

    .step-card h3 {
        font-size: 1.05rem;
        font-weight: 700;
        margin-bottom: 8px;
        color: #fff;
    }

    .step-card p {
        font-size: .86rem;
        color: rgba(255, 255, 255, .65);
        line-height: 1.6;
    }

    /* ===== Article Cards ===== */
    .article-grid {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 28px;
    }

    .article-card {
        background: #fff;
        border-radius: var(--radius-md);
        overflow: hidden;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        transition: all .35s ease;
        display: flex;
        flex-direction: column;
    }

    .article-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow-lg);
        border-color: rgba(212, 168, 83, .35);
    }

    .article-card .thumb {
        position: relative;
        height: 200px;
        overflow: hidden;
    }

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

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

    .article-card .thumb::after {
        content: '';
        position: absolute;
        inset: 0;
        background: linear-gradient(to top, rgba(15, 26, 45, .5), transparent 60%);
        opacity: 0;
        transition: opacity .3s;
    }

    .article-card:hover .thumb::after {
        opacity: 1;
    }

    .article-card .tag-badge {
        position: absolute;
        bottom: 14px;
        left: 14px;
        z-index: 2;
        background: rgba(212, 168, 83, .95);
        color: var(--primary);
        font-size: .72rem;
        font-weight: 600;
        padding: 4px 14px;
        border-radius: 999px;
        letter-spacing: .5px;
    }

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

    .article-card .meta {
        display: flex;
        align-items: center;
        gap: 14px;
        font-size: .78rem;
        color: var(--text-muted);
        margin-bottom: 10px;
    }

    .article-card .meta i {
        font-size: .72rem;
        color: var(--accent);
    }

    .article-card h3 {
        font-size: 1.1rem;
        font-weight: 700;
        color: var(--text-dark);
        line-height: 1.45;
        margin-bottom: 10px;
        transition: color .2s;
    }

    .article-card h3 a:hover {
        color: var(--accent-hover);
    }

    .article-card p {
        font-size: .88rem;
        color: var(--text-muted);
        line-height: 1.7;
        flex: 1;
    }

    .article-card .read-link {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        margin-top: 16px;
        font-size: .88rem;
        font-weight: 600;
        color: var(--accent-hover);
        transition: gap .3s;
    }

    .article-card .read-link:hover {
        gap: 10px;
        color: var(--accent);
    }

    /* ===== Tips Cards ===== */
    .tips-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 22px;
    }

    .tip-card {
        background: #fff;
        border-radius: var(--radius-md);
        padding: 28px;
        border: 1px solid var(--border);
        box-shadow: var(--shadow-sm);
        display: flex;
        gap: 18px;
        transition: all .3s ease;
    }

    .tip-card:hover {
        box-shadow: var(--shadow-md);
        border-color: rgba(212, 168, 83, .3);
        transform: translateY(-3px);
    }

    .tip-card .tip-icon {
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: rgba(212, 168, 83, .1);
        color: var(--accent-hover);
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.1rem;
        flex-shrink: 0;
        border: 1px solid rgba(212, 168, 83, .2);
    }

    .tip-card h3 {
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 6px;
        color: var(--text-dark);
    }

    .tip-card p {
        font-size: .86rem;
        color: var(--text-muted);
        line-height: 1.65;
    }

    /* ===== FAQ ===== */
    .faq-section {
        background: #fff;
        padding: 80px 0;
    }

    .faq-list {
        max-width: 860px;
        margin: 0 auto;
        display: flex;
        flex-direction: column;
        gap: 14px;
    }

    .faq-item {
        border: 1px solid var(--border);
        border-radius: var(--radius-md);
        overflow: hidden;
        transition: all .3s ease;
        background: #fff;
    }

    .faq-item:hover {
        border-color: rgba(212, 168, 83, .35);
        box-shadow: var(--shadow-sm);
    }

    .faq-item summary {
        padding: 22px 26px;
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        cursor: pointer;
        list-style: none;
        font-size: 1rem;
        font-weight: 600;
        color: var(--text-dark);
        transition: background .3s;
    }

    .faq-item summary::-webkit-details-marker {
        display: none;
    }

    .faq-item summary:hover {
        background: rgba(212, 168, 83, .04);
    }

    .faq-item summary i {
        color: var(--accent);
        transition: transform .3s;
        flex-shrink: 0;
        font-size: .85rem;
    }

    .faq-item[open] summary i {
        transform: rotate(90deg);
    }

    .faq-item .answer {
        padding: 0 26px 22px;
        color: var(--text-muted);
        font-size: .92rem;
        line-height: 1.8;
        border-top: 1px dashed var(--border);
        margin: 0 26px;
        padding: 18px 0 24px;
    }

    .faq-item .answer a {
        color: var(--accent-hover);
        font-weight: 600;
    }

    /* ===== CTA ===== */
    .cta-section {
        background: linear-gradient(135deg, #0f1a2d 0%, #1a2a45 50%, #0f1a2d 100%);
        padding: 72px 0;
        position: relative;
        overflow: hidden;
    }

    .cta-section::before {
        content: '';
        position: absolute;
        top: -200px;
        right: -200px;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(212, 168, 83, .15), transparent 70%);
    }

    .cta-inner {
        text-align: center;
        position: relative;
        z-index: 2;
    }

    .cta-inner h2 {
        color: #fff;
        font-size: clamp(1.6rem, 3vw, 2.4rem);
        font-weight: 800;
        margin-bottom: 14px;
    }

    .cta-inner p {
        color: rgba(255, 255, 255, .7);
        max-width: 560px;
        margin: 0 auto 30px;
        font-size: 1rem;
        line-height: 1.7;
    }

    /* ===== Footer ===== */
    .site-footer {
        background: #0a121f;
        color: rgba(255, 255, 255, .6);
        padding-top: 64px;
    }

    .footer-grid {
        display: grid;
        grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
        gap: 40px;
        padding-bottom: 48px;
    }

    .f-brand {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 1.2rem;
        font-weight: 700;
        color: #fff;
        margin-bottom: 14px;
    }

    .f-desc {
        font-size: .88rem;
        line-height: 1.7;
        color: rgba(255, 255, 255, .5);
        max-width: 320px;
    }

    .site-footer h4 {
        color: #fff;
        font-size: 1rem;
        font-weight: 700;
        margin-bottom: 18px;
        position: relative;
        padding-bottom: 10px;
    }

    .site-footer h4::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 28px;
        height: 2px;
        background: var(--accent);
        border-radius: 2px;
    }

    .f-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .f-links a {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        font-size: .87rem;
        color: rgba(255, 255, 255, .55);
        transition: all .25s;
    }

    .f-links a i {
        font-size: .7rem;
        color: var(--accent);
        transition: transform .2s;
    }

    .f-links a:hover {
        color: #fff;
        transform: translateX(4px);
    }

    .f-links a:hover i {
        transform: translateX(2px);
    }

    .f-contact {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }

    .f-contact span {
        font-size: .85rem;
        display: flex;
        align-items: center;
        gap: 10px;
        color: rgba(255, 255, 255, .55);
    }

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

    .footer-bottom {
        border-top: 1px solid rgba(255, 255, 255, .08);
        padding: 24px 0;
        text-align: center;
    }

    .footer-bottom p {
        font-size: .82rem;
        color: rgba(255, 255, 255, .4);
    }

    /* ===== Scrollbar & Focus ===== */
    ::selection {
        background: rgba(212, 168, 83, .3);
    }

    a:focus-visible,
    button:focus-visible {
        outline: 2px solid var(--accent);
        outline-offset: 2px;
    }

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

        .steps-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 40px 20px;
        }

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

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

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

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

        .site-header {
            padding: 0;
        }

        .header-inner {
            height: 64px;
        }

        .nav-links,
        .nav-cta {
            display: none;
        }

        .mobile-menu-btn {
            display: block;
        }

        .category-hero {
            padding: 72px 0 56px;
        }

        .category-hero h1 {
            font-size: 1.8rem;
        }

        .category-hero .hero-desc {
            font-size: .95rem;
        }

        .hero-stat-row {
            grid-template-columns: repeat(3, 1fr);
            margin-top: 32px;
            padding-top: 24px;
        }

        .hero-stat .num {
            font-size: 1.2rem;
        }

        .hero-stat .label {
            font-size: .7rem;
        }

        .section {
            padding: 60px 0;
        }

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

        .overview-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .overview-card {
            padding: 24px 18px;
        }

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

        .step-card {
            display: flex;
            align-items: center;
            gap: 20px;
            text-align: left;
            padding: 0;
        }

        .step-num {
            width: 60px;
            height: 60px;
            font-size: 1.3rem;
            margin: 0;
            flex-shrink: 0;
        }

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

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

        .tip-card {
            padding: 22px;
        }

        .faq-item summary {
            padding: 18px 18px;
            font-size: .92rem;
        }

        .faq-item .answer {
            margin: 0 18px;
            padding: 14px 0 18px;
            font-size: .88rem;
        }

        .footer-grid {
            grid-template-columns: 1fr;
            gap: 28px;
            padding-bottom: 32px;
        }

        .f-desc {
            max-width: 100%;
        }

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

        .hero-actions .btn-primary,
        .hero-actions .btn-outline {
            justify-content: center;
            width: 100%;
        }
    }

    @media (max-width: 520px) {
        .brand-logo span:last-child {
            font-size: 1.05rem;
        }

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

        .hero-stat-row {
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .hero-stat:nth-child(3) {
            grid-column: span 2;
        }

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

        .step-card {
            flex-direction: column;
            text-align: center;
            gap: 12px;
        }

        .step-num {
            width: 56px;
            height: 56px;
            font-size: 1.1rem;
        }
    }

/* roulang page: article */
:root {
    --primary: #0b1a33;
    --primary-light: #14294d;
    --primary-extra: #1e3768;
    --accent: #c9a55c;
    --accent-dark: #a8853f;
    --accent-light: #f8f1e5;
    --bg-page: #f5f7fb;
    --bg-white: #ffffff;
    --text-main: #1e293b;
    --text-muted: #5b6b81;
    --text-weak: #94a3b8;
    --border: #e3e8f0;
    --radius: 16px;
    --radius-sm: 10px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(11, 26, 51, 0.06);
    --shadow-md: 0 8px 24px rgba(11, 26, 51, 0.10);
    --shadow-lg: 0 18px 44px rgba(11, 26, 51, 0.14);
    --font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    --transition: all 0.3s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-family);
    background: var(--bg-page);
    color: var(--text-main);
    line-height: 1.75;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
ul, ol { list-style: none; }
button, input, select, textarea { font-family: inherit; font-size: inherit; }
:focus-visible {
    outline: 3px solid rgba(201, 165, 92, 0.5);
    outline-offset: 2px;
    border-radius: 4px;
}
.container-x {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

/* ===== Header ===== */
.site-header {
    background: rgba(255, 255, 255, 0.93);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(227, 232, 240, 0.8);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 14px rgba(11, 26, 51, 0.06);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    height: 74px;
}
.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 19px;
    color: var(--primary);
    letter-spacing: 0.5px;
    white-space: nowrap;
}
.logo-mark {
    width: 38px;
    height: 38px;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--primary), var(--primary-extra));
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    font-size: 17px;
    box-shadow: 0 4px 12px rgba(11, 26, 51, 0.22);
    flex-shrink: 0;
}
.nav-links { display: flex; gap: 34px; }
.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    padding: 6px 2px;
    position: relative;
    white-space: nowrap;
    transition: color 0.25s;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a.active { color: var(--primary); font-weight: 600; }
.nav-links a.active::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2.5px;
    border-radius: 3px;
    background: linear-gradient(90deg, var(--accent), var(--accent-dark));
}
.nav-cta { display: flex; align-items: center; gap: 12px; }
.mobile-menu-btn {
    display: none;
    background: none;
    border: 0;
    font-size: 22px;
    color: var(--primary);
    padding: 6px 10px;
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
}
.mobile-menu-btn:hover { background: var(--bg-page); }
.mobile-menu {
    display: none;
    background: #fff;
    border-top: 1px solid var(--border);
    padding: 12px 24px 18px;
}
.mobile-menu.open { display: block; }
.mobile-menu a {
    display: block;
    padding: 12px 4px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-main);
    border-bottom: 1px solid #f1f4f8;
}
.mobile-menu a:last-child { border-bottom: none; }
.mobile-menu a.active { color: var(--accent-dark); }
.mobile-menu a:hover { padding-left: 10px; color: var(--primary); }

/* ===== Buttons ===== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    background: var(--primary);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1;
}
.btn-primary:hover {
    background: var(--primary-extra);
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(11, 26, 51, 0.2);
}
.btn-primary:active { transform: translateY(0); }
.btn-gold {
    background: linear-gradient(135deg, #d4af5e, #b8913e);
    color: #0b1a33;
    border-color: transparent;
    box-shadow: 0 4px 14px rgba(201, 165, 92, 0.35);
}
.btn-gold:hover {
    background: linear-gradient(135deg, #dfbc73, #c49c49);
    box-shadow: 0 8px 22px rgba(201, 165, 92, 0.45);
    transform: translateY(-2px);
    color: #0b1a33;
}
.btn-outline {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 11px 22px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--border);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
    line-height: 1;
}
.btn-outline:hover {
    border-color: var(--primary);
    background: rgba(11, 26, 51, 0.04);
    transform: translateY(-1px);
}
.btn-outline-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 26px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    background: transparent;
    color: #fff;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}
.btn-outline-light:hover { background: rgba(255, 255, 255, 0.15); border-color: #fff; transform: translateY(-2px); }
.btn-lg { padding: 14px 32px; font-size: 16px; border-radius: 12px; }
.btn-sm { padding: 9px 16px; font-size: 13px; border-radius: 8px; }
.btn-block { width: 100%; display: flex; }

/* ===== Page Banner ===== */
.page-banner {
    position: relative;
    color: #fff;
    padding: 76px 0 68px;
    text-align: center;
    background: linear-gradient(130deg, #0b1a33 0%, #14294d 55%, #1c3460 100%);
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    opacity: 0.3;
    mix-blend-mode: overlay;
}
.page-banner::after {
    content: '';
    position: absolute;
    width: 460px;
    height: 460px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 165, 92, 0.22), transparent 70%);
    top: -140px;
    right: -100px;
    pointer-events: none;
}
.page-banner .container-x { position: relative; z-index: 2; }
.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.65);
    margin-bottom: 18px;
    flex-wrap: wrap;
}
.breadcrumb a { color: rgba(255, 255, 255, 0.85); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb i { font-size: 12px; }
.breadcrumb .current { color: var(--accent); }
.banner-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(201, 165, 92, 0.18);
    border: 1px solid rgba(201, 165, 92, 0.4);
    color: var(--accent);
    font-size: 13px;
    font-weight: 600;
    padding: 7px 16px;
    border-radius: 30px;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}
.page-banner h1 {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.3;
    max-width: 820px;
    margin: 0 auto 16px;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}
.banner-meta {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 22px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}
.banner-meta span { display: inline-flex; align-items: center; gap: 6px; }
.banner-meta i { color: var(--accent); }

/* ===== Content Layout ===== */
.content-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 40px;
    padding-top: 56px;
    padding-bottom: 64px;
}
.card {
    background: var(--bg-white);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}
.article-main { padding: 44px; min-width: 0; }
.article-body { font-size: 16px; line-height: 1.9; color: #334155; }
.article-body p:first-of-type { font-size: 17px; color: #3d4c63; }
.article-body h2 {
    font-size: 25px;
    font-weight: 700;
    color: var(--primary);
    margin: 36px 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border);
    line-height: 1.4;
}
.article-body h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin: 28px 0 12px;
    line-height: 1.4;
}
.article-body h4 {
    font-size: 17px;
    font-weight: 600;
    color: var(--primary);
    margin: 22px 0 10px;
}
.article-body p { margin-bottom: 18px; }
.article-body ul { margin-bottom: 18px; padding-left: 4px; list-style-type: none; }
.article-body ul li { position: relative; padding-left: 24px; margin-bottom: 9px; }
.article-body ul li::before {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    left: 0;
    top: 2px;
    color: var(--accent);
    font-size: 14px;
}
.article-body ol { margin-bottom: 18px; padding-left: 24px; list-style-type: decimal; }
.article-body ol li { margin-bottom: 9px; }
.article-body a { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary); }
.article-body blockquote {
    border-left: 4px solid var(--accent);
    background: var(--accent-light);
    padding: 18px 22px;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    margin: 24px 0;
    color: #6b5e48;
}
.article-body blockquote p:last-child { margin-bottom: 0; }
.article-body img {
    border-radius: 14px;
    box-shadow: var(--shadow-md);
    margin: 24px 0;
    height: auto;
}
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; font-size: 15px; }
.article-body th { background: #f1f5f9; font-weight: 600; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 16px; text-align: left; }
.article-body code {
    background: #f1f5f9;
    border: 1px solid var(--border);
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 14px;
    color: #c026d3;
}
.article-divider { height: 1px; background: var(--border); margin: 36px 0 24px; }
.article-footer-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

/* ===== Sidebar ===== */
.article-sidebar { display: flex; flex-direction: column; gap: 24px; }
.sidebar-card { padding: 26px; position: relative; overflow: hidden; }
.sidebar-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 9px;
}
.sidebar-card h3 i { color: var(--accent); }
.sidebar-card p { font-size: 14px; color: var(--text-muted); margin-bottom: 16px; line-height: 1.7; }
.sidebar-card .btn-block { margin-top: 4px; }
.tip-list { display: flex; flex-direction: column; gap: 10px; }
.tip-list li { display: flex; align-items: flex-start; gap: 9px; font-size: 14px; color: var(--text-muted); }
.tip-list li i { color: var(--accent); margin-top: 4px; }
.sidebar-help {
    background: linear-gradient(160deg, var(--primary), var(--primary-extra));
    border-color: transparent;
}
.sidebar-help h3 { color: #fff; }
.sidebar-help h3 i { color: var(--accent); }
.sidebar-help p { color: rgba(255, 255, 255, 0.75); }
.sidebar-help .btn-outline {
    border-color: rgba(255, 255, 255, 0.4);
    color: #fff;
}
.sidebar-help .btn-outline:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: #fff;
}

/* ===== Article Empty ===== */
.article-empty { text-align: center; padding: 52px 20px; }
.empty-icon {
    width: 74px;
    height: 74px;
    border-radius: 50%;
    background: var(--accent-light);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    color: var(--accent);
    margin-bottom: 20px;
}
.article-empty h2 { font-size: 26px; color: var(--primary); margin-bottom: 10px; }
.article-empty p { color: var(--text-muted); font-size: 15px; max-width: 440px; margin: 0 auto 24px; }
.empty-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ===== Related Section ===== */
.related-section { padding: 64px 0 72px; background: var(--bg-white); border-top: 1px solid var(--border); }
.section-head { max-width: 720px; margin-bottom: 38px; }
.section-head h2 { font-size: 30px; font-weight: 800; color: var(--primary); letter-spacing: -0.5px; margin-bottom: 8px; }
.section-head p { color: var(--text-muted); font-size: 15px; }
.section-badge {
    display: inline-block;
    background: var(--accent-light);
    border: 1px solid rgba(201, 165, 92, 0.35);
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 700;
    padding: 5px 14px;
    border-radius: 30px;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 12px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}
.related-card {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
    display: block;
    box-shadow: var(--shadow-sm);
}
.related-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: #d8d0bf;
}
.related-card img { width: 100%; height: 190px; object-fit: cover; }
.related-body { padding: 22px 22px 24px; }
.related-body .badge {
    display: inline-block;
    background: var(--accent-light);
    color: var(--accent-dark);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: 10px;
}
.related-body h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.5;
    margin-bottom: 8px;
    transition: var(--transition);
}
.related-card:hover .related-body h3 { color: var(--accent-dark); }
.related-body p { font-size: 14px; color: var(--text-muted); line-height: 1.7; }

/* ===== FAQ ===== */
.faq-section { padding: 72px 0 20px; }
.faq-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 12px; }
.faq-item {
    background: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
    transition: var(--transition);
}
.faq-item:hover { border-color: #d4cbb8; box-shadow: var(--shadow-sm); }
.faq-item summary {
    cursor: pointer;
    list-style: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 18px 20px;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary);
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    color: var(--accent);
    font-size: 17px;
    transition: transform 0.3s ease;
    flex-shrink: 0;
}
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item > div { padding: 0 20px 18px; }
.faq-item > div p { font-size: 14px; color: var(--text-muted); line-height: 1.75; }
.faq-item[open] { border-color: #d4cbb8; box-shadow: 0 6px 18px rgba(11, 26, 51, 0.06); }

/* ===== CTA ===== */
.cta-section { padding: 60px 0 72px; }
.cta-inner {
    position: relative;
    background: linear-gradient(130deg, #0b1a33, #1c3460);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    overflow: hidden;
    color: #fff;
    box-shadow: var(--shadow-lg);
}
.cta-inner::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    opacity: 0.25;
    mix-blend-mode: overlay;
}
.cta-inner::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(201, 165, 92, 0.25), transparent 70%);
    bottom: -120px;
    left: -60px;
    pointer-events: none;
}
.cta-inner h2 { position: relative; z-index: 1; font-size: 30px; font-weight: 800; margin-bottom: 10px; }
.cta-inner p { position: relative; z-index: 1; color: rgba(255, 255, 255, 0.8); font-size: 16px; margin-bottom: 26px; }
.cta-actions { position: relative; z-index: 1; display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }

/* ===== Footer ===== */
.site-footer { background: #0a1526; color: rgba(255, 255, 255, 0.65); border-top: 3px solid var(--accent); }
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: 42px;
    padding: 56px 0 44px;
}
.f-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 18px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 12px;
}
.f-desc { font-size: 14px; line-height: 1.8; color: rgba(255, 255, 255, 0.55); max-width: 300px; }
.site-footer h4 {
    color: #fff;
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 8px;
}
.site-footer h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 24px;
    height: 2px;
    border-radius: 2px;
    background: var(--accent);
}
.f-links { display: flex; flex-direction: column; gap: 10px; }
.f-links a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.55);
    transition: var(--transition);
}
.f-links a:hover { color: var(--accent); padding-left: 4px; }
.f-links a i { font-size: 12px; color: var(--accent); }
.f-contact { display: flex; flex-direction: column; gap: 10px; }
.f-contact span { display: flex; align-items: center; gap: 9px; font-size: 14px; }
.f-contact i { color: var(--accent); width: 16px; text-align: center; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 18px 0;
    text-align: center;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}
.footer-bottom .container-x { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 8px; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .content-wrap { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
    .header-inner { height: 64px; }
    .nav-links { display: none; }
    .nav-cta { display: none; }
    .mobile-menu-btn { display: block; }
    .page-banner { padding: 54px 0 46px; }
    .page-banner h1 { font-size: 28px; }
    .article-main { padding: 26px 20px; }
    .related-grid { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; }
    .cta-inner { padding: 36px 22px; }
    .cta-inner h2 { font-size: 24px; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 40px 0 30px; }
}
@media (max-width: 520px) {
    .container-x { padding-left: 16px; padding-right: 16px; }
    .page-banner h1 { font-size: 23px; }
    .banner-meta { gap: 10px; flex-direction: column; }
    .related-grid { gap: 16px; }
    .related-body { padding: 18px 16px 20px; }
    .article-footer-nav { flex-direction: column; align-items: stretch; }
    .article-footer-nav .btn-primary,
    .article-footer-nav .btn-outline { width: 100%; }
    .cta-actions { flex-direction: column; align-items: stretch; }
    .btn-lg { width: 100%; }
    .content-wrap { padding-top: 36px; padding-bottom: 44px; }
    .related-section { padding: 48px 0 56px; }
    .faq-section { padding: 52px 0 12px; }
}