/* roulang page: index */
:root {
            --brand-100: #E1ECFA;
            --brand-200: #C2D8F3;
            --brand-500: #3E7BE6;
            --brand-600: #2A63C7;
            --brand-700: #1D4D9E;
            --accent: #E89433;
            --ink-900: #1B2735;
            --ink-600: #45536B;
            --ink-400: #8592A8;
            --line: #E3EAF3;
            --bg-page: #FAFCFF;
            --bg-soft: #F1F6FC;
            --footer-bg: #101D33;
            --shadow-card: 0 12px 32px rgba(31, 68, 135, 0.10);
            --shadow-card-hover: 0 18px 42px rgba(31, 68, 135, 0.18);
            --radius: 14px;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-page);
            color: var(--ink-900);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        img {
            max-width: 100%;
            display: block;
        }
        h1,
        h2,
        h3,
        h4 {
            margin: 0;
            line-height: 1.3;
            font-weight: 700;
        }
        p {
            margin: 0;
        }
        .container {
            max-width: 1260px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        .section {
            padding: 64px 0;
        }
        @media (min-width: 1024px) {
            .section {
                padding: 96px 0;
            }
        }
        .section-eyebrow {
            display: inline-block;
            font-size: 14px;
            font-weight: 600;
            letter-spacing: 0.08em;
            color: var(--brand-500);
            background: var(--brand-100);
            padding: 4px 14px;
            border-radius: 999px;
        }
        .section-head {
            margin-bottom: 48px;
        }
        .section-head h2 {
            font-size: 28px;
            font-weight: 700;
            margin-top: 14px;
        }
        .section-head p {
            font-size: 16px;
            color: var(--ink-600);
            margin-top: 12px;
            max-width: 640px;
        }
        @media (min-width: 1024px) {
            .section-head h2 {
                font-size: 32px;
            }
        }
        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: 9px;
            font-size: 15px;
            font-weight: 600;
            border: 1px solid transparent;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
            line-height: 1.2;
        }
        .btn-lg {
            padding: 15px 36px;
            font-size: 16px;
        }
        .btn-primary {
            background: var(--brand-500);
            color: #fff;
            border-color: var(--brand-500);
        }
        .btn-primary:hover {
            background: var(--brand-600);
            border-color: var(--brand-600);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card-hover);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline {
            background: #fff;
            border-color: var(--brand-500);
            color: var(--brand-500);
        }
        .btn-outline:hover {
            background: var(--brand-100);
            transform: translateY(-2px);
        }
        .btn-outline:active {
            transform: translateY(0);
        }
        .btn:focus-visible {
            outline: 3px solid rgba(62, 123, 230, 0.35);
            outline-offset: 2px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #fff;
            border-bottom: 1px solid var(--line);
            transition: box-shadow 0.25s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 6px 24px rgba(31, 68, 135, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }
        .brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            flex-shrink: 0;
        }
        .brand-main {
            font-size: 22px;
            font-weight: 800;
            color: var(--brand-700);
            letter-spacing: -0.02em;
        }
        .brand-sub {
            font-size: 12px;
            font-weight: 600;
            color: var(--ink-400);
            background: var(--bg-soft);
            border: 1px solid var(--line);
            padding: 2px 8px;
            border-radius: 999px;
        }
        .brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            display: inline-block;
        }
        .nav-menu {
            display: none;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            position: relative;
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-600);
            padding: 8px 4px;
            transition: color 0.2s;
        }
        .nav-link:hover {
            color: var(--brand-500);
        }
        .nav-link.active {
            color: var(--brand-700);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 100%;
            height: 3px;
            border-radius: 99px;
            background: var(--brand-500);
        }
        .header-cta {
            display: none;
            align-items: center;
            gap: 12px;
        }
        .hamburger {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 44px;
            height: 44px;
            border: 1px solid var(--line);
            background: #fff;
            border-radius: 10px;
            cursor: pointer;
            font-size: 20px;
            color: var(--ink-900);
            transition: background 0.2s;
        }
        .hamburger:hover {
            background: var(--bg-soft);
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--line);
            padding: 16px 20px 24px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 14px 12px;
            border-radius: 10px;
            font-size: 16px;
        }
        .mobile-menu .nav-link.active {
            background: var(--brand-100);
            color: var(--brand-700);
        }
        .mobile-menu .nav-link.active::after {
            display: none;
        }
        .mobile-cta {
            margin-top: 12px;
        }
        @media (min-width: 1024px) {
            .nav-menu {
                display: flex;
            }
            .header-cta {
                display: flex;
            }
            .hamburger {
                display: none;
            }
            .mobile-menu {
                display: none !important;
            }
        }
        /* Hero */
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.png') no-repeat center center;
            background-size: cover;
            min-height: 70vh;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(100deg, rgba(255, 255, 255, 0.92) 30%, rgba(225, 236, 250, 0.75) 70%, rgba(225, 236, 250, 0.55));
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0 96px;
            max-width: 680px;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: none;
            border: 1px solid var(--line);
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--brand-700);
            margin-bottom: 28px;
            box-shadow: 0 2px 12px rgba(31, 68, 135, 0.06);
        }
        .hero h1 {
            font-size: 30px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink-900);
            letter-spacing: -0.02em;
        }
        .hero h1 .accent-line {
            color: var(--brand-500);
        }
        .hero-sub {
            font-size: 17px;
            line-height: 1.8;
            color: var(--ink-600);
            margin-top: 20px;
            max-width: 560px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 32px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 48px;
            padding-top: 32px;
            border-top: 1px solid rgba(195, 208, 230, 0.6);
        }
        .hero-stats .stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stats .stat strong {
            font-size: 26px;
            font-weight: 800;
            color: var(--brand-700);
            line-height: 1.2;
        }
        .hero-stats .stat span {
            font-size: 14px;
            color: var(--ink-400);
            margin-top: 4px;
        }
        @media (min-width: 1024px) {
            .hero {
                min-height: 82vh;
            }
            .hero h1 {
                font-size: 42px;
            }
        }
        @media (max-width: 640px) {
            .hero-content {
                padding: 56px 0 72px;
            }
            .hero-stats {
                gap: 18px;
            }
            .hero-stats .stat strong {
                font-size: 22px;
            }
        }
        /* Value section */
        .value-section {
            background: var(--bg-page);
        }
        .value-lead {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--ink-900);
            max-width: 720px;
            margin: 24px 0 44px;
        }
        .value-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .value-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            padding: 30px;
            transition: box-shadow 0.25s ease, transform 0.25s ease;
        }
        .value-item:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .value-num {
            font-size: 13px;
            font-weight: 700;
            color: var(--brand-500);
            background: var(--brand-100);
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            letter-spacing: 0.06em;
        }
        .value-item h3 {
            font-size: 19px;
            margin: 18px 0 10px;
        }
        .value-item p {
            font-size: 15px;
            color: var(--ink-600);
            line-height: 1.8;
        }
        @media (min-width: 768px) {
            .value-grid {
                grid-template-columns: 1fr 1fr 1fr;
                gap: 24px;
            }
            .value-lead {
                font-size: 26px;
            }
        }
        /* Features */
        .features-section {
            background: var(--bg-soft);
        }
        .feature-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 36px;
            align-items: center;
            margin-bottom: 56px;
        }
        .feature-row:last-child {
            margin-bottom: 0;
        }
        .feature-img {
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .feature-img img {
            width: 100%;
            height: 260px;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .feature-row:hover .feature-img img {
            transform: scale(1.02);
        }
        .feature-text .feature-tag {
            font-size: 13px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(232, 148, 51, 0.1);
            padding: 4px 12px;
            border-radius: 999px;
        }
        .feature-text h3 {
            font-size: 24px;
            margin: 16px 0 12px;
        }
        .feature-text p {
            font-size: 15px;
            line-height: 1.85;
            color: var(--ink-600);
            max-width: 480px;
        }
        .feature-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--brand-500);
            margin-top: 20px;
            transition: color 0.2s, gap 0.2s;
        }
        .feature-link:hover {
            color: var(--brand-600);
            gap: 10px;
        }
        @media (min-width: 1024px) {
            .feature-row {
                grid-template-columns: 1fr 1fr;
                gap: 80px;
            }
            .feature-row.reverse .feature-img {
                order: 2;
            }
            .feature-row.reverse .feature-text {
                order: 1;
            }
            .feature-img img {
                height: 320px;
            }
        }
        /* Scenes */
        .scenes-section {
            background: var(--bg-page);
        }
        .scene-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .scene-card {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            min-height: 360px;
            display: flex;
            align-items: flex-end;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }
        .scene-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .scene-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .scene-card:hover img {
            transform: scale(1.03);
        }
        .scene-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(16, 29, 51, 0) 40%, rgba(16, 29, 51, 0.75) 100%);
        }
        .scene-body {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 28px;
        }
        .scene-body .scene-label {
            font-size: 13px;
            font-weight: 500;
            opacity: 0.85;
            display: block;
            margin-bottom: 6px;
        }
        .scene-body h3 {
            font-size: 22px;
            font-weight: 700;
        }
        .scene-body p {
            font-size: 14px;
            line-height: 1.7;
            opacity: 0.9;
            margin-top: 8px;
        }
        @media (min-width: 768px) {
            .scene-grid {
                grid-template-columns: 1fr 1fr;
            }
            .scene-card:nth-child(3) {
                grid-column: span 2;
                min-height: 300px;
            }
        }
        @media (min-width: 1024px) {
            .scene-grid {
                grid-template-columns: 1fr 1fr 1fr;
            }
            .scene-card:nth-child(3) {
                grid-column: auto;
                min-height: 360px;
            }
        }
        /* Cases */
        .cases-section {
            background: var(--bg-soft);
        }
        .case-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 28px;
        }
        .case-main {
            display: grid;
            grid-template-columns: 1fr;
            background: #fff;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
        }
        .case-main img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }
        .case-main .case-content {
            padding: 28px;
        }
        .case-main .case-tag {
            font-size: 13px;
            font-weight: 600;
            color: var(--brand-500);
        }
        .case-main h3 {
            font-size: 22px;
            margin: 10px 0 12px;
        }
        .case-main p {
            font-size: 15px;
            color: var(--ink-600);
            line-height: 1.8;
        }
        .case-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--line);
        }
        .case-stats .stat {
            font-size: 14px;
            color: var(--ink-600);
        }
        .case-stats .stat strong {
            font-size: 20px;
            color: var(--brand-700);
            margin-right: 4px;
        }
        .case-side-cards {
            display: grid;
            grid-template-columns: 1fr;
            gap: 20px;
        }
        .case-side {
            display: flex;
            gap: 16px;
            background: #fff;
            border-radius: 14px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            padding: 16px;
            align-items: center;
            transition: transform 0.25s, box-shadow 0.25s;
        }
        .case-side:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }
        .case-side img {
            width: 90px;
            height: 90px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
        }
        .case-side h4 {
            font-size: 16px;
            margin-bottom: 6px;
        }
        .case-side p {
            font-size: 13px;
            color: var(--ink-400);
            line-height: 1.5;
        }
        @media (min-width: 768px) {
            .case-main {
                grid-template-columns: 1fr 1fr;
            }
            .case-main img {
                height: 100%;
            }
            .case-side-cards {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (min-width: 1024px) {
            .case-grid {
                grid-template-columns: 7fr 5fr;
            }
            .case-side-cards {
                grid-template-columns: 1fr;
            }
        }
        /* Pricing */
        .pricing-section {
            background: var(--bg-page);
        }
        .pricing-grid {
            display: flex;
            flex-direction: column;
            gap: 24px;
            align-items: stretch;
        }
        .pricing-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 16px;
            padding: 32px;
            display: flex;
            flex-direction: column;
            transition: box-shadow 0.25s, transform 0.25s;
            position: relative;
        }
        .pricing-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .pricing-card .plan-name {
            font-size: 18px;
            font-weight: 700;
            color: var(--ink-900);
        }
        .pricing-card .plan-desc {
            font-size: 14px;
            color: var(--ink-400);
            margin-top: 6px;
        }
        .pricing-card .plan-price {
            font-size: 34px;
            font-weight: 800;
            color: var(--brand-700);
            margin: 20px 0 4px;
            line-height: 1.2;
        }
        .pricing-card .plan-price small {
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-400);
        }
        .pricing-card ul {
            list-style: none;
            padding: 0;
            margin: 24px 0 0;
            flex: 1;
        }
        .pricing-card ul li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--ink-600);
            line-height: 1.6;
            padding: 7px 0;
        }
        .pricing-card ul li::before {
            content: '✓';
            flex-shrink: 0;
            color: var(--brand-500);
            font-weight: 700;
            font-size: 15px;
        }
        .pricing-card .btn {
            margin-top: 28px;
        }
        .pricing-card.featured {
            border: 2px solid var(--brand-500);
            box-shadow: 0 16px 40px rgba(62, 123, 230, 0.14);
        }
        .pricing-card.featured .badge-rec {
            position: absolute;
            top: -12px;
            right: 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 700;
            padding: 4px 16px;
            border-radius: 999px;
            letter-spacing: 0.04em;
            box-shadow: 0 4px 14px rgba(232, 148, 51, 0.3);
        }
        .pricing-note {
            text-align: center;
            font-size: 14px;
            color: var(--ink-400);
            margin-top: 24px;
        }
        @media (min-width: 992px) {
            .pricing-grid {
                flex-direction: row;
                align-items: stretch;
            }
            .pricing-card {
                flex: 1;
            }
            .pricing-card.featured {
                flex: 1.2;
            }
        }
        /* FAQ */
        .faq-section {
            background: var(--bg-soft);
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow 0.2s;
        }
        .faq-item[open] {
            box-shadow: var(--shadow-card);
        }
        .faq-item summary {
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--ink-900);
            cursor: pointer;
            position: relative;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--brand-100);
            color: var(--brand-500);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            transition: transform 0.25s, background 0.25s;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
            background: var(--brand-500);
            color: #fff;
        }
        .faq-item .faq-answer {
            padding: 0 22px 20px;
            font-size: 15px;
            color: var(--ink-600);
            line-height: 1.8;
        }
        .faq-item[open] {
            border-color: var(--brand-200);
            background: var(--bg-page);
        }
        .faq-item[open] summary {
            padding-bottom: 10px;
        }
        /* News */
        .news-section {
            background: var(--bg-page);
        }
        .news-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 24px;
        }
        .news-card {
            display: flex;
            flex-direction: column;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.25s, transform 0.25s;
        }
        .news-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .news-thumb {
            overflow: hidden;
        }
        .news-thumb img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform 0.35s ease;
        }
        .news-card:hover .news-thumb img {
            transform: scale(1.04);
        }
        .news-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--ink-400);
            margin-bottom: 10px;
        }
        .news-cat {
            background: var(--brand-100);
            color: var(--brand-700);
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
        }
        .news-body h3 {
            font-size: 17px;
            line-height: 1.4;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-body p {
            font-size: 14px;
            color: var(--ink-600);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 12px;
        }
        .news-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--brand-500);
            margin-top: auto;
        }
        .news-empty {
            border: 2px dashed var(--line);
            border-radius: var(--radius);
            background: var(--bg-soft);
            text-align: center;
            padding: 56px 24px;
            color: var(--ink-400);
        }
        .news-empty .empty-icon {
            font-size: 40px;
            margin-bottom: 14px;
        }
        .news-empty p {
            font-size: 15px;
            margin-bottom: 20px;
        }
        @media (min-width: 768px) {
            .news-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        /* CTA */
        .cta-section {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') no-repeat center center;
            background-size: cover;
            padding: 72px 0;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(250, 252, 255, 0.96) 20%, rgba(225, 236, 250, 0.85) 90%);
        }
        .cta-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }
        .cta-content h2 {
            font-size: 28px;
            line-height: 1.35;
        }
        .cta-content p {
            margin-top: 16px;
            font-size: 16px;
            color: var(--ink-600);
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }
        .cta-note {
            font-size: 14px;
            color: var(--ink-400);
            margin-top: 20px;
        }
        @media (min-width: 1024px) {
            .cta-section {
                padding: 96px 0;
            }
            .cta-content h2 {
                font-size: 32px;
            }
        }
        /* Footer */
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.75);
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            padding: 64px 0 48px;
        }
        .footer-brand {
            max-width: 320px;
        }
        .footer-brand .brand {
            color: #fff;
        }
        .footer-brand .brand-main {
            color: #fff;
        }
        .footer-brand .brand-sub {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.2);
            color: rgba(255, 255, 255, 0.7);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            margin-top: 18px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 18px;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .footer-col .contact-line {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
        }
        @media (min-width: 768px) {
            .footer-top {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        /* Misc */
        .text-brand {
            color: var(--brand-500);
        }
        .bg-soft-blue {
            background: var(--bg-soft);
        }
        .section-divider {
            border: none;
            border-top: 1px solid var(--line);
            margin: 0;
        }
        @media (max-width: 520px) {
            .btn-lg {
                padding: 13px 24px;
                width: 100%;
            }
            .hero-actions {
                flex-direction: column;
            }
            .pricing-card {
                padding: 24px;
            }
            .case-side {
                flex-direction: column;
                text-align: center;
            }
            .case-side img {
                width: 100%;
                height: 140px;
            }
        }

/* roulang page: category1 */
:root {
    --brand-100: #E1ECFA;
    --brand-200: #C2D8F3;
    --brand-500: #3E7BE6;
    --brand-600: #2A63C7;
    --brand-700: #1D4D9E;
    --accent: #E89433;
    --ink-900: #1B2735;
    --ink-600: #45536B;
    --ink-400: #8592A8;
    --line: #E3EAF3;
    --bg-page: #FAFCFF;
    --bg-soft: #F1F6FC;
    --footer-bg: #101D33;
    --shadow-card: 0 12px 32px rgba(31,68,135,0.10);
    --shadow-card-hover: 0 18px 42px rgba(31,68,135,0.18);
    --radius-card: 14px;
    --radius-btn: 9px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink-900);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s ease;
}

button {
    font-family: inherit;
    cursor: pointer;
}

.container-page {
    max-width: 1240px;
    margin: 0 auto;
    padding-left: 24px;
    padding-right: 24px;
}

@media (min-width: 768px) {
    .container-page {
        padding-left: 32px;
        padding-right: 32px;
    }
}

/* ===== Header & Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.97);
    border-bottom: 1px solid var(--line);
    box-shadow: 0 1px 12px rgba(31,68,135,0.04);
}

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

.brand {
    display: flex;
    align-items: baseline;
    gap: 8px;
    flex-shrink: 0;
}

.brand-main {
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-700);
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.brand-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--accent);
    margin-left: 3px;
    vertical-align: middle;
}

.brand-sub {
    font-size: 12px;
    font-weight: 600;
    color: var(--ink-400);
    letter-spacing: 2px;
    white-space: nowrap;
}

.nav-menu {
    display: none;
    align-items: center;
    gap: 36px;
}

@media (min-width: 768px) {
    .nav-menu {
        display: flex;
    }
}

.nav-link {
    position: relative;
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-600);
    padding: 10px 2px;
    transition: color .2s ease;
}

.nav-link:hover {
    color: var(--brand-500);
}

.nav-link.active {
    color: var(--brand-700);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    bottom: 2px;
    height: 2px;
    border-radius: 2px;
    background: var(--brand-500);
}

.nav-cta {
    display: none;
    margin-left: 8px;
}

@media (min-width: 768px) {
    .nav-cta {
        display: inline-flex;
    }
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    padding: 10px;
    border-radius: 8px;
}

@media (min-width: 768px) {
    .menu-toggle {
        display: none;
    }
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink-900);
    border-radius: 2px;
    transition: transform .3s ease, opacity .3s ease;
}

.mobile-menu {
    display: none;
    padding: 12px 24px 24px;
    background: #fff;
    border-top: 1px solid var(--line);
}

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

.mobile-link {
    display: block;
    padding: 14px 0;
    font-size: 16px;
    font-weight: 500;
    color: var(--ink-900);
    border-bottom: 1px solid var(--line);
}

.mobile-link:last-of-type {
    border-bottom: none;
}

.mobile-link.active {
    color: var(--brand-500);
    font-weight: 600;
}

.mobile-menu .btn {
    margin-top: 16px;
    width: 100%;
}

/* ===== Button ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    font-size: 15px;
    font-weight: 600;
    line-height: 1.4;
    transition: all .25s ease;
    cursor: pointer;
    border: 1px solid transparent;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid rgba(62,123,230,0.35);
    outline-offset: 2px;
}

.btn-primary {
    background: var(--brand-500);
    color: #fff;
    box-shadow: 0 6px 18px rgba(62,123,230,0.22);
}

.btn-primary:hover {
    background: var(--brand-600);
    transform: translateY(-2px);
    box-shadow: 0 10px 26px rgba(62,123,230,0.32);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(62,123,230,0.2);
}

.btn-secondary {
    background: #fff;
    color: var(--brand-500);
    border-color: var(--brand-500);
}

.btn-secondary:hover {
    background: var(--brand-100);
    transform: translateY(-2px);
}

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

@media (max-width: 520px) {
    .btn {
        width: 100%;
        padding-top: 14px;
        padding-bottom: 14px;
    }
}

/* ===== Hero ===== */
.page-hero {
    background: linear-gradient(180deg, rgba(255,255,255,0.88) 0%, rgba(250,252,255,0.96) 100%), url('/assets/images/backpic/back-1.png') center / cover no-repeat;
    padding: 96px 0 88px;
    border-bottom: 1px solid var(--line);
}

@media (max-width: 768px) {
    .page-hero {
        padding: 64px 0 56px;
    }
}

.hero-kicker {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--brand-500);
    background: var(--brand-100);
    border-radius: 999px;
    padding: 6px 18px;
    margin-bottom: 18px;
}

.page-hero h1 {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.25;
    color: var(--ink-900);
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    .page-hero h1 {
        font-size: 32px;
    }
}

.hero-subtitle {
    margin-top: 18px;
    font-size: 17px;
    line-height: 1.9;
    color: var(--ink-600);
    max-width: 560px;
}

.hero-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    padding: 8px 32px;
    min-width: 280px;
}

.hero-stat {
    padding: 22px 0;
    border-bottom: 1px solid var(--line);
    text-align: left;
}

.hero-stat:last-child {
    border-bottom: none;
}

.stat-num {
    font-size: 34px;
    font-weight: 800;
    color: var(--brand-700);
    line-height: 1.2;
}

.stat-label {
    margin-top: 4px;
    font-size: 14px;
    color: var(--ink-400);
}

/* ===== Section ===== */
.section {
    padding: 96px 0;
}

@media (max-width: 768px) {
    .section {
        padding: 64px 0;
    }
}

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

.section-head {
    max-width: 720px;
    margin-bottom: 48px;
}

.section-head.text-center {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--brand-500);
    margin-bottom: 10px;
}

.section-title {
    font-size: 32px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--ink-900);
    letter-spacing: 0.5px;
}

@media (max-width: 768px) {
    .section-title {
        font-size: 24px;
    }
}

.section-desc {
    margin-top: 12px;
    font-size: 15px;
    color: var(--ink-600);
    line-height: 1.8;
}

/* ===== Activity Card ===== */
.activity-card {
    background: #fff;
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-card);
    transition: transform .3s ease, box-shadow .3s ease;
}

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

.activity-media {
    height: 300px;
    overflow: hidden;
}

@media (min-width: 1024px) {
    .activity-media {
        height: 420px;
    }
}

.activity-card img {
    transition: transform .45s ease;
}

.activity-card:hover img {
    transform: scale(1.03);
}

.activity-body {
    padding: 28px;
}

.activity-body h3 {
    font-size: 21px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 10px;
}

.activity-body p {
    font-size: 15px;
    line-height: 1.8;
    color: var(--ink-600);
}

.text-link {
    display: inline-block;
    margin-top: 14px;
    font-size: 14px;
    font-weight: 600;
    color: var(--brand-500);
}

.text-link:hover {
    color: var(--brand-600);
}

/* ===== Badge ===== */
.badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 999px;
    background: var(--brand-100);
    color: var(--brand-700);
    font-size: 13px;
    font-weight: 500;
    line-height: 1.5;
}

/* ===== Step Card ===== */
.step-card {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    transition: box-shadow .3s ease, border-color .3s ease, transform .3s ease;
}

.step-card:hover {
    border-color: var(--brand-200);
    box-shadow: var(--shadow-card);
    transform: translateY(-4px);
}

.step-num {
    font-size: 42px;
    font-weight: 800;
    color: var(--brand-100);
    line-height: 1;
    margin-bottom: 14px;
}

.step-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 8px;
}

.step-card p {
    font-size: 14px;
    line-height: 1.7;
    color: var(--ink-600);
}

/* ===== Feature Strip ===== */
.feature-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    background: var(--bg-soft);
    border: 1px solid var(--line);
    border-radius: 16px;
    overflow: hidden;
}

@media (min-width: 768px) {
    .feature-strip {
        grid-template-columns: repeat(4, 1fr);
    }
}

.feature-item {
    padding: 36px 24px;
    text-align: center;
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    transition: background .3s ease;
}

.feature-item:hover {
    background: #fff;
}

.feature-item:nth-child(2n) {
    border-right: none;
}

@media (min-width: 768px) {
    .feature-item:nth-child(2n) {
        border-right: 1px solid var(--line);
    }
    .feature-item:last-child {
        border-right: none;
    }
}

@media (max-width: 767px) {
    .feature-item:nth-child(2n) {
        border-right: none;
    }
    .feature-item:last-child {
        border-bottom: none;
    }
    .feature-item:nth-child(3) {
        border-bottom: none;
    }
}

.feature-icon {
    font-size: 38px;
    line-height: 1;
    margin-bottom: 14px;
}

.feature-item h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--ink-900);
    margin-bottom: 6px;
}

.feature-item p {
    font-size: 14px;
    color: var(--ink-600);
    line-height: 1.6;
}

/* ===== FAQ ===== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 12px;
    margin-bottom: 12px;
    overflow: hidden;
    transition: border-color .3s ease, box-shadow .3s ease;
}

.faq-item.active {
    border-color: var(--brand-200);
    box-shadow: 0 4px 16px rgba(31,68,135,0.06);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--ink-900);
    cursor: pointer;
    user-select: none;
}

.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--brand-100);
    color: var(--brand-500);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 500;
    transition: transform .3s ease, background .3s ease, color .3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--brand-500);
    color: #fff;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    padding: 0 24px;
    font-size: 15px;
    line-height: 1.85;
    color: var(--ink-600);
    transition: max-height .35s ease, padding .35s ease;
}

.faq-item.active .faq-answer {
    max-height: 320px;
    padding-bottom: 20px;
}

/* ===== CTA ===== */
.cta-section {
    background: linear-gradient(180deg, rgba(255,255,255,0.9) 0%, rgba(241,246,252,0.95) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
    padding: 96px 0;
    border-top: 1px solid var(--line);
}

@media (max-width: 768px) {
    .cta-section {
        padding: 64px 0;
    }
}

.cta-section h2 {
    font-size: 32px;
    font-weight: 800;
    color: var(--ink-900);
    letter-spacing: 1px;
}

@media (max-width: 768px) {
    .cta-section h2 {
        font-size: 26px;
    }
}

.cta-section p {
    margin-top: 14px;
    font-size: 16px;
    color: var(--ink-600);
    max-width: 640px;
    margin-left: auto;
    margin-right: auto;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
}

@media (max-width: 520px) {
    .cta-buttons .btn {
        width: 100%;
    }
}

/* ===== Footer ===== */
.site-footer {
    background: var(--footer-bg);
    color: rgba(255,255,255,0.7);
    padding: 72px 0 0;
}

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

@media (min-width: 768px) {
    .footer-top {
        grid-template-columns: 2fr 1fr 1fr 1.2fr;
        gap: 32px;
    }
}

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

.footer-brand .brand-main {
    color: #fff;
    font-size: 24px;
}

.footer-brand .brand-sub {
    color: rgba(255,255,255,0.5);
}

.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255,255,255,0.55);
    max-width: 260px;
}

.footer-col h4 {
    font-size: 15px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: 0.5px;
}

.footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    padding: 6px 0;
    transition: color .2s ease;
}

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

.contact-line {
    font-size: 14px;
    color: rgba(255,255,255,0.55);
    padding: 6px 0;
    line-height: 1.6;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding: 24px 0;
    font-size: 13px;
    text-align: center;
    color: rgba(255,255,255,0.4);
}

/* ===== Misc ===== */
.text-center {
    text-align: center;
}

.mt-12 {
    margin-top: 48px;
}

/* 响应式细节补充 */
@media (max-width: 640px) {
    .feature-strip {
        grid-template-columns: 1fr 1fr;
    }
    .feature-item {
        padding: 28px 16px;
    }
    .feature-item:nth-child(2) {
        border-right: none;
    }
    .feature-item:nth-child(-n+2) {
        border-bottom: 1px solid var(--line);
    }
    .feature-item:nth-child(3) {
        border-bottom: none;
    }
    .activity-body {
        padding: 20px;
    }
    .activity-body h3 {
        font-size: 18px;
    }
    .faq-question {
        padding: 16px 18px;
        font-size: 15px;
    }
    .faq-answer {
        padding: 0 18px;
        font-size: 14px;
    }
    .faq-item.active .faq-answer {
        padding-bottom: 16px;
    }
}

@media (min-width: 641px) and (max-width: 767px) {
    .feature-strip {
        grid-template-columns: 1fr 1fr;
    }
    .feature-item:nth-child(2) {
        border-right: none;
    }
    .feature-item:nth-child(-n+2) {
        border-bottom: 1px solid var(--line);
    }
    .feature-item:nth-child(3) {
        border-bottom: none;
    }
    .feature-item:last-child {
        border-bottom: none;
    }
}

/* roulang page: article */
:root {
    --brand-100: #E1ECFA;
    --brand-200: #C2D8F3;
    --brand-500: #3E7BE6;
    --brand-600: #2A63C7;
    --brand-700: #1D4D9E;
    --accent: #E89433;
    --ink-900: #1B2735;
    --ink-600: #45536B;
    --ink-400: #8592A8;
    --line: #E3EAF3;
    --bg-page: #FAFCFF;
    --bg-soft: #F1F6FC;
    --footer-bg: #101D33;
    --shadow-card: 0 12px 32px rgba(31,68,135,0.10);
    --shadow-card-hover: 0 18px 42px rgba(31,68,135,0.18);
}

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
    font-size: 16px;
    line-height: 1.75;
    color: var(--ink-900);
    background: var(--bg-page);
    -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--brand-500); }
button { font-family: inherit; }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 32px;
}
@media (max-width: 640px) {
    .container { padding: 0 20px; }
}

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--brand-500);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ===== Header / Nav ===== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: #FFFFFF;
    border-bottom: 1px solid var(--line);
}
.nav-wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}
.brand {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    text-decoration: none;
    flex-shrink: 0;
}
.brand-main {
    font-size: 22px;
    font-weight: 800;
    color: var(--brand-700);
    letter-spacing: -0.02em;
}
.brand-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    margin-left: 2px;
    vertical-align: middle;
}
.brand-sub {
    font-size: 13px;
    color: var(--ink-400);
    font-weight: 500;
}
.nav-menu {
    display: flex;
    align-items: center;
    gap: 36px;
}
.nav-link {
    font-size: 15px;
    font-weight: 500;
    color: var(--ink-600);
    text-decoration: none;
    transition: color 0.2s ease;
    position: relative;
    padding: 8px 0;
}
.nav-link:hover { color: var(--brand-500); }
.nav-link.active {
    color: var(--brand-500);
    font-weight: 600;
}
.nav-link.active::after {
    content: '';
    position: absolute;
    left: 0; right: 0; bottom: -2px;
    height: 2px;
    border-radius: 2px;
    background: var(--brand-500);
}
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.nav-cta {
    font-size: 14px;
    padding: 10px 24px;
}
.nav-toggle {
    display: none;
    width: 44px;
    height: 44px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    border-radius: 8px;
}
.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--ink-900);
    border-radius: 2px;
    transition: all 0.25s ease;
}
.nav-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 768px) {
    .nav-toggle { display: flex; }
    .nav-menu {
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: #FFFFFF;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 12px 24px 20px;
        border-bottom: 1px solid var(--line);
        box-shadow: 0 16px 32px rgba(31,68,135,0.08);
        display: none;
    }
    .nav-menu.open { display: flex; }
    .nav-menu .nav-link {
        padding: 14px 0;
        border-bottom: 1px solid var(--line);
        font-size: 16px;
    }
    .nav-menu .nav-link:last-child { border-bottom: none; }
    .nav-menu .nav-link.active::after { display: none; }
    .nav-actions .btn { display: none; }
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
    border-radius: 9px;
    padding: 12px 28px;
    text-decoration: none;
    transition: all 0.25s ease;
    border: 1px solid transparent;
    cursor: pointer;
    line-height: 1.4;
}
.btn-primary {
    background: var(--brand-500);
    color: #FFFFFF;
}
.btn-primary:hover {
    background: var(--brand-600);
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(62, 123, 230, 0.32);
}
.btn-primary:active {
    transform: translateY(0);
    box-shadow: none;
}
.btn-outline {
    background: transparent;
    border-color: var(--brand-500);
    color: var(--brand-500);
}
.btn-outline:hover {
    background: var(--brand-100);
    color: var(--brand-600);
}

/* ===== Article Hero ===== */
.article-hero {
    position: relative;
    padding: 88px 0 64px;
    background-position: center;
    background-size: cover;
    background-repeat: no-repeat;
    border-bottom: 1px solid var(--line);
}
.article-hero::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(120deg, rgba(250,252,255,0.97) 0%, rgba(250,252,255,0.86) 48%, rgba(225,236,250,0.78) 100%);
}
.article-hero .container {
    position: relative;
    z-index: 2;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--ink-400);
    margin-bottom: 24px;
}
.breadcrumb a {
    color: var(--ink-600);
    text-decoration: none;
    transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--brand-500); }
.breadcrumb .sep { color: var(--ink-400); opacity: 0.6; }
.breadcrumb .current {
    color: var(--ink-900);
    font-weight: 500;
    max-width: 300px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.article-title {
    font-size: 40px;
    font-weight: 800;
    line-height: 1.3;
    color: var(--ink-900);
    margin-bottom: 22px;
    letter-spacing: -0.02em;
    max-width: 900px;
}
@media (max-width: 640px) {
    .article-title { font-size: 30px; }
}

.article-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    font-size: 14px;
    color: var(--ink-600);
    margin-bottom: 8px;
}
.meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* ===== Article Body ===== */
.article-section {
    padding: 56px 0 96px;
    background: var(--bg-page);
}
.article-main {
    max-width: 760px;
    margin: 0 auto;
}

.article-cover {
    margin-bottom: 40px;
}
.article-cover img {
    width: 100%;
    border-radius: 16px;
    box-shadow: var(--shadow-card);
    aspect-ratio: 16 / 7;
    object-fit: cover;
}
@media (max-width: 768px) {
    .article-cover img { aspect-ratio: 16 / 9; }
}

.article-content {
    font-size: 17px;
    line-height: 2;
    color: var(--ink-900);
    word-break: break-word;
}
.article-content h2 {
    font-size: 26px;
    font-weight: 700;
    margin: 48px 0 20px;
    padding-left: 14px;
    border-left: 4px solid var(--brand-500);
    color: var(--ink-900);
    line-height: 1.4;
}
.article-content h3 {
    font-size: 21px;
    font-weight: 600;
    margin: 36px 0 14px;
    color: var(--ink-900);
}
.article-content p {
    margin-bottom: 1.25em;
}
.article-content img {
    max-width: 100%;
    border-radius: 12px;
    margin: 28px auto;
}
.article-content blockquote {
    border-left: 4px solid var(--brand-500);
    background: var(--brand-100);
    border-radius: 0 12px 12px 0;
    padding: 20px 24px;
    margin: 28px 0;
    color: var(--ink-600);
}
.article-content ul,
.article-content ol {
    margin: 16px 0 24px;
    padding-left: 26px;
}
.article-content li {
    margin-bottom: 8px;
    line-height: 1.9;
}
.article-content a {
    color: var(--brand-500);
    text-decoration: underline;
    text-underline-offset: 3px;
}
.article-content a:hover { color: var(--brand-600); }
.article-content hr {
    border: none;
    border-top: 1px solid var(--line);
    margin: 40px 0;
}
.article-content strong {
    font-weight: 700;
    color: var(--ink-900);
}
.article-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 28px 0;
    font-size: 15px;
}
.article-content th,
.article-content td {
    border: 1px solid var(--line);
    padding: 10px 14px;
    text-align: left;
}
.article-content th {
    background: var(--bg-soft);
    font-weight: 600;
}

/* ===== Empty State ===== */
.article-empty {
    text-align: center;
    padding: 100px 24px;
    border: 2px dashed var(--line);
    border-radius: 16px;
    background: var(--bg-soft);
}
.empty-icon {
    font-size: 42px;
    color: var(--ink-400);
    margin-bottom: 14px;
    line-height: 1;
}
.article-empty p {
    font-size: 18px;
    color: var(--ink-600);
    margin-bottom: 24px;
}

/* ===== Tags ===== */
.article-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 48px;
    padding-top: 28px;
    border-top: 1px solid var(--line);
}
.tag {
    display: inline-flex;
    align-items: center;
    padding: 6px 16px;
    background: var(--bg-soft);
    color: var(--ink-600);
    font-size: 13px;
    font-weight: 500;
    border-radius: 999px;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}
.tag:hover {
    background: var(--brand-100);
    color: var(--brand-700);
    border-color: var(--brand-200);
}

/* ===== Footer Nav ===== */
.article-footer-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 32px;
}
.back-link,
.more-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--brand-500);
    font-size: 15px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s ease;
}
.back-link:hover,
.more-link:hover {
    color: var(--brand-600);
}

/* ===== Footer ===== */
.site-footer {
    background: var(--footer-bg);
    color: rgba(255, 255, 255, 0.8);
    padding: 72px 0 28px;
}
.footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.footer-brand .brand {
    margin-bottom: 8px;
}
.footer-brand .brand-main {
    color: #FFFFFF;
    font-size: 24px;
}
.footer-brand .brand-sub {
    color: rgba(255, 255, 255, 0.6);
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.55);
    margin-top: 12px;
    max-width: 300px;
}
.footer-col {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.footer-col h4 {
    font-size: 16px;
    font-weight: 600;
    color: #FFFFFF;
    margin-bottom: 12px;
}
.footer-col a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.2s;
    line-height: 1.8;
}
.footer-col a:hover { color: #FFFFFF; }
.contact-line {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}
.footer-bottom {
    text-align: center;
    padding-top: 28px;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}

@media (max-width: 1024px) {
    .footer-top { grid-template-columns: 1fr 1fr; gap: 36px; }
}
@media (max-width: 560px) {
    .footer-top { grid-template-columns: 1fr; }
}

/* roulang page: category2 */
:root {
            --brand-100: #E1ECFA;
            --brand-200: #C2D8F3;
            --brand-500: #3E7BE6;
            --brand-600: #2A63C7;
            --brand-700: #1D4D9E;
            --accent: #E89433;
            --ink-900: #1B2735;
            --ink-600: #45536B;
            --ink-400: #8592A8;
            --line: #E3EAF3;
            --bg-page: #FAFCFF;
            --bg-soft: #F1F6FC;
            --footer-bg: #101D33;
            --shadow-card: 0 12px 32px rgba(31, 68, 135, 0.10);
            --shadow-card-hover: 0 18px 42px rgba(31, 68, 135, 0.18);
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            margin: 0;
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", system-ui, sans-serif;
            background: var(--bg-page);
            color: var(--ink-900);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
        }
        .container {
            width: 100%;
            max-width: 1240px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        @media (min-width: 768px) {
            .container {
                padding-left: 32px;
                padding-right: 32px;
            }
        }
        .section {
            padding-top: 64px;
            padding-bottom: 64px;
        }
        @media (min-width: 768px) {
            .section {
                padding-top: 96px;
                padding-bottom: 96px;
            }
        }
        .section-header {
            max-width: 720px;
            margin-bottom: 40px;
        }
        .section-header .eyebrow {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 700;
            color: var(--brand-500);
            margin-bottom: 10px;
            letter-spacing: 0.2px;
        }
        .section-header .eyebrow::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent);
            display: inline-block;
            border-radius: 2px;
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--ink-900);
            line-height: 1.3;
            margin: 0 0 14px 0;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 30px;
            }
        }
        .section-desc {
            font-size: 16px;
            color: var(--ink-600);
            line-height: 1.8;
            margin: 0;
        }
        .btn {
            display: inline-block;
            border-radius: 9px;
            padding: 12px 28px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1;
            text-align: center;
            transition: all 0.2s ease;
            cursor: pointer;
            text-decoration: none;
            border: 1px solid transparent;
            background: transparent;
            min-height: 44px;
        }
        .btn-primary {
            background: var(--brand-500);
            color: #fff;
            box-shadow: 0 8px 18px rgba(62, 123, 230, 0.18);
        }
        .btn-primary:hover {
            background: var(--brand-600);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(62, 123, 230, 0.26);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 6px 12px rgba(62, 123, 230, 0.16);
        }
        .btn-outline {
            background: #fff;
            color: var(--brand-500);
            border-color: var(--brand-500);
        }
        .btn-outline:hover {
            background: var(--brand-100);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }
        .btn-accent {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            filter: brightness(0.96);
            transform: translateY(-2px);
            box-shadow: 0 12px 24px rgba(232, 148, 51, 0.25);
        }
        .btn-sm {
            padding: 9px 20px;
            font-size: 14px;
            min-height: 40px;
        }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.95);
            border-bottom: 1px solid var(--line);
            box-shadow: 0 1px 8px rgba(16, 29, 51, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 24px;
        }
        .brand {
            display: inline-flex;
            align-items: baseline;
            gap: 6px;
            flex-shrink: 0;
        }
        .brand-main {
            font-size: 21px;
            font-weight: 800;
            color: var(--ink-900);
            letter-spacing: 0.5px;
        }
        .brand-dot {
            display: inline-block;
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 999px;
            margin-left: -2px;
            vertical-align: middle;
        }
        .brand-sub {
            font-size: 12px;
            color: var(--ink-400);
            font-weight: 600;
        }
        .nav-menu {
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--ink-600);
            position: relative;
            padding: 10px 2px;
            text-decoration: none;
            transition: color 0.2s ease;
            border-radius: 6px;
        }
        .nav-link:hover {
            color: var(--brand-500);
        }
        .nav-link.active {
            color: var(--brand-500);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: 4px;
            height: 2px;
            background: var(--brand-500);
            border-radius: 4px;
        }
        .nav-cta {
            flex-shrink: 0;
        }
        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 8px;
            border: 1px solid var(--line);
            background: #fff;
            cursor: pointer;
            position: relative;
            outline: none;
        }
        .nav-toggle:focus-visible {
            outline: 2px solid var(--brand-500);
            outline-offset: 2px;
        }
        .nav-toggle span {
            position: absolute;
            left: 12px;
            right: 12px;
            height: 2px;
            background: var(--ink-600);
            border-radius: 2px;
            transition: all 0.3s ease;
        }
        .nav-toggle span:nth-child(1) {
            top: 16px;
        }
        .nav-toggle span:nth-child(2) {
            top: 22px;
        }
        .nav-toggle span:nth-child(3) {
            top: 28px;
        }
        .nav-toggle.open span:nth-child(1) {
            top: 21px;
            transform: rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            top: 21px;
            transform: rotate(-45deg);
        }
        @media (max-width: 1023px) {
            .nav-toggle {
                display: block;
            }
            .nav-menu {
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: #fff;
                border-bottom: 1px solid var(--line);
                box-shadow: 0 16px 30px rgba(16, 29, 51, 0.08);
                padding: 16px 24px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                display: none;
            }
            .nav-menu.open {
                display: flex;
            }
            .nav-link {
                padding: 14px 12px;
                font-size: 16px;
                border-bottom: 1px solid var(--line);
            }
            .nav-link:last-child {
                border-bottom: 0;
            }
            .nav-link.active {
                background: var(--bg-soft);
                color: var(--brand-500);
                border-radius: 8px;
            }
            .nav-link.active::after {
                display: none;
            }
            .nav-cta {
                display: none;
            }
        }
        .page-hero {
            position: relative;
            background: url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
            padding: 88px 0 72px;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(120deg, rgba(255, 255, 255, 0.94) 0%, rgba(250, 252, 255, 0.82) 55%, rgba(225, 236, 250, 0.65) 100%);
        }
        .page-hero .container {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.25;
            color: var(--ink-900);
            margin: 0 0 16px 0;
        }
        @media (min-width: 768px) {
            .hero-title {
                font-size: 42px;
            }
        }
        .hero-lead {
            font-size: 16px;
            line-height: 1.9;
            color: var(--ink-600);
            max-width: 640px;
            margin: 0;
        }
        @media (min-width: 768px) {
            .hero-lead {
                font-size: 17px;
            }
        }
        .course-list {
            border-radius: 16px;
            overflow: hidden;
            background: #fff;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--line);
        }
        .course-row {
            display: flex;
            align-items: center;
            gap: 18px;
            padding: 24px 20px;
            border-bottom: 1px solid var(--line);
            transition: background 0.2s ease;
            text-decoration: none;
            position: relative;
        }
        .course-row:last-child {
            border-bottom: 0;
        }
        .course-row:hover {
            background: var(--bg-soft);
        }
        .course-row:hover .course-arrow {
            transform: translateX(4px);
            color: var(--brand-500);
        }
        .course-index {
            font-size: 14px;
            font-weight: 800;
            color: var(--brand-200);
            width: 30px;
            flex-shrink: 0;
            font-variant-numeric: tabular-nums;
        }
        .course-body {
            flex: 1;
            min-width: 0;
        }
        .course-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink-900);
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px;
        }
        @media (min-width: 768px) {
            .course-title {
                font-size: 19px;
            }
        }
        .course-badge {
            font-size: 12px;
            font-weight: 600;
            background: var(--brand-100);
            color: var(--brand-700);
            border-radius: 999px;
            padding: 4px 12px;
            white-space: nowrap;
        }
        .course-desc {
            font-size: 14px;
            color: var(--ink-600);
            line-height: 1.7;
            margin: 0;
        }
        .course-meta {
            font-size: 13px;
            color: var(--ink-400);
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 6px;
            flex-shrink: 0;
        }
        .course-arrow {
            color: var(--ink-400);
            font-size: 18px;
            transition: all 0.2s ease;
            flex-shrink: 0;
        }
        @media (max-width: 767px) {
            .course-row {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
                padding: 20px;
            }
            .course-meta {
                white-space: normal;
            }
        }
        .feature-split {
            display: grid;
            grid-template-columns: 1fr;
            gap: 40px;
            align-items: center;
        }
        @media (min-width: 1024px) {
            .feature-split {
                grid-template-columns: 1fr 1fr;
                gap: 64px;
            }
        }
        .feature-media {
            position: relative;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            background: var(--bg-soft);
        }
        .feature-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 24px 0 0 0;
            display: grid;
            gap: 14px;
        }
        .feature-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            color: var(--ink-600);
            font-size: 15px;
            line-height: 1.7;
        }
        .feature-list i {
            flex: none;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: var(--brand-100);
            color: var(--brand-500);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-style: normal;
            font-weight: 800;
            margin-top: 2px;
        }
        .format-list {
            display: grid;
            gap: 16px;
        }
        .format-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 24px 20px;
            box-shadow: var(--shadow-card);
            transition: box-shadow 0.2s ease, transform 0.2s ease;
        }
        @media (min-width: 768px) {
            .format-row {
                gap: 28px;
                padding: 28px 32px;
            }
        }
        .format-row:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px);
        }
        .format-icon {
            flex: none;
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--brand-100);
            color: var(--brand-500);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
        }
        @media (min-width: 768px) {
            .format-icon {
                width: 56px;
                height: 56px;
            }
        }
        .format-body {
            flex: 1;
        }
        .format-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--ink-900);
            margin-bottom: 4px;
        }
        @media (min-width: 768px) {
            .format-title {
                font-size: 18px;
            }
        }
        .format-desc {
            font-size: 14px;
            color: var(--ink-600);
            line-height: 1.7;
            margin: 0;
        }
        @media (min-width: 768px) {
            .format-desc {
                font-size: 15px;
            }
        }
        .format-tag {
            flex-shrink: 0;
            font-size: 13px;
            color: var(--brand-700);
            background: var(--brand-100);
            border-radius: 999px;
            padding: 6px 14px;
            font-weight: 600;
            white-space: nowrap;
        }
        @media (max-width: 640px) {
            .format-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .format-tag {
                align-self: flex-start;
            }
        }
        .faq-list {
            max-width: 840px;
            margin: 0 auto;
            display: grid;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 12px;
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }
        .faq-item.open {
            box-shadow: var(--shadow-card);
            border-color: var(--brand-200);
        }
        .faq-q {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--ink-900);
            gap: 20px;
        }
        @media (min-width: 768px) {
            .faq-q {
                padding: 22px 28px;
                font-size: 16px;
            }
        }
        .faq-icon {
            flex: none;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--brand-100);
            color: var(--brand-500);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-a {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
            padding: 0 24px;
        }
        @media (min-width: 768px) {
            .faq-a {
                padding: 0 28px;
            }
        }
        .faq-item.open .faq-a {
            max-height: 400px;
            padding-bottom: 22px;
        }
        .faq-a p {
            font-size: 15px;
            color: var(--ink-600);
            line-height: 1.8;
            margin: 0;
        }
        .cta-section {
            padding: 64px 0;
            background: var(--bg-soft);
            border-top: 1px solid var(--line);
        }
        @media (min-width: 768px) {
            .cta-section {
                padding: 80px 0;
            }
        }
        .cta-box {
            background: linear-gradient(120deg, var(--brand-100) 0%, #ffffff 60%, var(--bg-soft) 100%);
            border: 1px solid var(--brand-200);
            border-radius: 24px;
            padding: 44px 28px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }
        @media (min-width: 768px) {
            .cta-box {
                padding: 64px;
            }
        }
        .cta-box h2 {
            font-size: 26px;
            font-weight: 800;
            color: var(--ink-900);
            margin: 0 0 14px 0;
        }
        @media (min-width: 768px) {
            .cta-box h2 {
                font-size: 30px;
            }
        }
        .cta-box p {
            font-size: 15px;
            color: var(--ink-600);
            margin: 0 auto 32px auto;
            max-width: 520px;
            line-height: 1.8;
        }
        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 14px;
        }
        .site-footer {
            background: var(--footer-bg);
            color: rgba(255, 255, 255, 0.78);
            padding: 64px 0 28px;
        }
        .footer-top {
            display: grid;
            grid-template-columns: 1fr;
            gap: 32px;
            margin-bottom: 40px;
        }
        @media (min-width: 768px) {
            .footer-top {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }
        .footer-brand a.brand {
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 320px;
            margin: 16px 0 0 0;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 15px;
            font-weight: 700;
            margin: 0 0 12px 0;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
            transition: color 0.2s ease;
        }
        .footer-col a:hover {
            color: #fff;
        }
        .contact-line {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            padding: 5px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 24px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.4);
            text-align: center;
        }
        .footer-brand .brand-main {
            color: #fff;
        }
        .footer-brand .brand-sub {
            color: rgba(255, 255, 255, 0.5);
        }
        @media (max-width: 767px) {
            .footer-top {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }