/* roulang page: index */
:root {
            --color-primary: #13504F;
            --color-primary-dark: #0E3E3D;
            --color-primary-deep: #0B2D2C;
            --color-accent: #E8613C;
            --color-accent-dark: #D04B2A;
            --color-gold: #E5A83D;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-text-title: #1A1F1E;
            --color-text-body: #3D4543;
            --color-text-muted: #6E7875;
            --color-border: #DDE3E0;
            --color-success: #2F9E74;
            --color-error: #C6453A;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-img: 8px;
            --shadow-card: 0 2px 8px rgba(19, 80, 79, .06);
            --shadow-hover: 0 10px 28px rgba(19, 80, 79, .12);
        }

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

        html,
        body {
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text-body);
            font-size: 16px;
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        ul,
        ol {
            margin: 0;
            padding: 0;
            list-style: none;
        }

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

        .grid-container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 68px;
            display: flex;
            align-items: center;
            background: transparent;
            border-bottom: 1px solid transparent;
            transition: background .35s ease, box-shadow .35s ease, border-color .35s ease;
        }

        .site-header.is-scrolled {
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 14px rgba(19, 80, 79, .06);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
            gap: 32px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 1px;
            color: #fff;
            white-space: nowrap;
            transition: color .3s ease;
        }

        .site-header.is-scrolled .brand {
            color: var(--color-primary);
        }

        .brand-dot {
            position: relative;
            width: 22px;
            height: 22px;
            border-radius: 7px;
            background: var(--color-primary);
            border: 2px solid rgba(255, 255, 255, .4);
            flex: 0 0 auto;
            transition: border-color .3s ease;
        }

        .brand-dot::after {
            content: '';
            position: absolute;
            left: 5px;
            top: 5px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-gold);
        }

        .site-header.is-scrolled .brand-dot {
            border-color: rgba(19, 80, 79, .2);
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .nav-list {
            display: flex;
            align-items: center;
            gap: 28px;
            margin: 0;
        }

        .nav-link {
            position: relative;
            display: inline-block;
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            opacity: .92;
            padding: 6px 0;
            transition: color .3s ease;
        }

        .site-header.is-scrolled .nav-link {
            color: var(--color-text-title);
        }

        .nav-link:hover {
            color: var(--color-accent);
            opacity: 1;
        }

        .site-header.is-scrolled .nav-link:hover {
            color: var(--color-primary);
        }

        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -4px;
            width: 0;
            height: 2px;
            background: var(--color-accent);
            border-radius: 2px;
            transition: width .3s ease;
        }

        .site-header.is-scrolled .nav-link::after {
            background: var(--color-primary);
        }

        .nav-link:hover::after {
            width: 100%;
        }

        .nav-link.is-active {
            color: #fff;
            font-weight: 600;
            opacity: 1;
        }

        .site-header.is-scrolled .nav-link.is-active {
            color: var(--color-primary);
        }

        .nav-link.is-active::after {
            left: 50%;
            bottom: -8px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: currentColor;
            transform: translateX(-50%);
        }

        .nav-link.is-active:hover::after {
            width: 6px;
        }

        .nav-side {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-left: 8px;
        }

        .nav-login {
            font-size: 14px;
            font-weight: 500;
            color: #fff;
            transition: color .3s ease;
        }

        .site-header.is-scrolled .nav-login {
            color: var(--color-text-title);
        }

        .nav-login:hover {
            color: var(--color-accent);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1;
            padding: 10px 24px;
            border-radius: var(--radius-btn);
            border: 1px solid transparent;
            transition: background .3s ease, border-color .3s ease, color .3s ease, transform .25s ease, box-shadow .3s ease;
            text-decoration: none;
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 3px solid rgba(19, 80, 79, .25);
            outline-offset: 2px;
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 15px;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(19, 80, 79, .18);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: var(--color-accent-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(232, 97, 60, .22);
        }

        .btn-outline-light {
            background: transparent;
            border-color: rgba(255, 255, 255, .7);
            color: #fff;
        }

        .btn-outline-light:hover {
            background: rgba(255, 255, 255, .12);
            border-color: #fff;
            color: #fff;
            transform: translateY(-2px);
        }

        .btn-light {
            background: #fff;
            color: var(--color-primary);
        }

        .btn-light:hover {
            background: #F2B84B;
            color: var(--color-primary-deep);
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(0, 0, 0, .12);
        }

        .btn-outline-dark {
            background: transparent;
            border-color: var(--color-primary);
            color: var(--color-primary);
        }

        .btn-outline-dark:hover {
            background: rgba(19, 80, 79, .08);
            color: var(--color-primary-dark);
            transform: translateY(-2px);
        }

        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            background: transparent;
            border: 0;
            border-radius: 8px;
            padding: 8px;
            align-items: center;
        }

        .menu-toggle-line {
            display: block;
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: transform .3s ease, opacity .3s ease, background .3s ease;
        }

        .site-header.is-scrolled .menu-toggle-line {
            background: var(--color-primary);
        }

        .menu-toggle.is-active .menu-toggle-line:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .menu-toggle.is-active .menu-toggle-line:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.is-active .menu-toggle-line:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .hero {
            position: relative;
            min-height: 540px;
            display: flex;
            align-items: center;
            overflow: hidden;
            color: #fff;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(11, 45, 44, .88) 0%, rgba(11, 45, 44, .62) 55%, rgba(11, 45, 44, .3) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
            padding-top: 68px;
            padding-bottom: 96px;
        }

        .hero-title {
            font-size: 44px;
            font-weight: 700;
            line-height: 1.3;
            color: #fff;
            margin: 0 0 18px;
            letter-spacing: 1px;
        }

        .hero-em {
            color: var(--color-accent);
        }

        .hero-sub {
            font-size: 17px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .86);
            max-width: 540px;
            margin-bottom: 34px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .hero-decor {
            position: absolute;
            z-index: 1;
            right: 3%;
            bottom: 60px;
            width: 340px;
            height: 340px;
            pointer-events: none;
        }

        .decor-ring {
            position: absolute;
            border-radius: 50%;
            border: 2px solid rgba(255, 255, 255, .18);
        }

        .decor-ring-1 {
            width: 200px;
            height: 200px;
            right: 0;
            bottom: 0;
        }

        .decor-ring-2 {
            width: 300px;
            height: 300px;
            right: 20px;
            bottom: 10px;
            border-color: rgba(255, 255, 255, .1);
        }

        .decor-ring-3 {
            width: 120px;
            height: 120px;
            right: 40px;
            bottom: 30px;
            border-color: rgba(229, 168, 61, .35);
        }

        .decor-ring-4 {
            width: 70px;
            height: 70px;
            right: 90px;
            bottom: 180px;
            border-color: rgba(255, 255, 255, .28);
        }

        .scroll-down {
            position: absolute;
            bottom: 26px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 3;
            color: rgba(255, 255, 255, .4);
            transition: color .3s ease, transform .3s ease;
            line-height: 0;
        }

        .scroll-down:hover {
            color: #fff;
            transform: translateX(-50%) translateY(4px);
        }

        .stats-section {
            background: var(--color-card);
            border-bottom: 1px solid var(--color-border);
            padding: 36px 0;
        }

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

        .stat-item {
            text-align: center;
            padding: 8px 0;
        }

        .stat-num {
            display: block;
            font-size: 28px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.2;
            font-variant-numeric: tabular-nums;
        }

        .stat-label {
            display: block;
            font-size: 13px;
            color: var(--color-text-muted);
            margin-top: 8px;
        }

        .section {
            padding: 80px 0;
        }

        .section--tinted {
            background: #F0F3F1;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 24px;
            margin-bottom: 44px;
        }

        .section-eyebrow {
            display: block;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 3px;
            color: var(--color-accent);
            margin-bottom: 10px;
        }

        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-title);
            line-height: 1.3;
            margin: 0;
        }

        .section-head p {
            color: var(--color-text-muted);
            font-size: 15px;
            margin: 10px 0 0;
            max-width: 560px;
        }

        .section-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            white-space: nowrap;
        }

        .section-more:hover {
            color: var(--color-accent);
        }

        .features-wrap {
            display: flex;
            gap: 64px;
            align-items: flex-start;
        }

        .features-intro {
            flex: 0 0 34%;
            position: sticky;
            top: 96px;
            align-self: flex-start;
        }

        .features-intro .section-eyebrow {
            margin-bottom: 12px;
        }

        .features-intro h2 {
            font-size: 30px;
            line-height: 1.35;
            color: var(--color-text-title);
            margin: 0 0 18px;
        }

        .features-intro p {
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 22px;
        }

        .features-grid {
            flex: 1;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-card {
            position: relative;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 26px 24px;
            box-shadow: var(--shadow-card);
            transition: transform .3s ease, box-shadow .3s ease;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: var(--color-primary);
            border-radius: var(--radius-card) var(--radius-card) 0 0;
            transform: scaleX(0);
            transform-origin: left;
            transition: transform .35s ease;
        }

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

        .feature-card:hover::before {
            transform: scaleX(1);
        }

        .feature-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(19, 80, 79, .08);
            border-radius: 10px;
            color: var(--color-primary);
            margin-bottom: 18px;
        }

        .feature-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-title);
            margin: 0 0 8px;
        }

        .feature-card p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin: 0;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .scene-item {
            display: grid;
            grid-template-columns: 1.05fr 1fr;
            gap: 64px;
            align-items: center;
            margin-bottom: 80px;
        }

        .scene-item:last-child {
            margin-bottom: 0;
        }

        .scene-item--reverse .scene-media {
            order: 2;
        }

        .scene-media {
            position: relative;
            border-radius: var(--radius-img);
            overflow: hidden;
            box-shadow: 0 10px 28px rgba(19, 80, 79, .1);
        }

        .scene-media img {
            width: 100%;
            height: 400px;
            object-fit: cover;
            transition: transform .5s ease;
        }

        .scene-media:hover img {
            transform: scale(1.02);
        }

        .scene-label {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 2px;
            color: var(--color-accent);
            margin-bottom: 10px;
            display: block;
        }

        .scene-content h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text-title);
            margin: 0 0 12px;
            line-height: 1.4;
        }

        .scene-content p {
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.75;
            margin-bottom: 18px;
        }

        .scene-points li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 9px;
            font-size: 14px;
            color: var(--color-text-body);
        }

        .scene-points li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 9px;
            width: 6px;
            height: 6px;
            background: var(--color-primary);
            border-radius: 50%;
        }

        .news-item {
            display: grid;
            grid-template-columns: 120px 1fr;
            gap: 22px;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 16px;
            margin-bottom: 18px;
            transition: box-shadow .3s ease, transform .3s ease, border-color .3s ease;
        }

        .news-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: transparent;
        }

        .news-thumb {
            width: 120px;
            height: 90px;
            border-radius: var(--radius-img);
            overflow: hidden;
            flex: 0 0 120px;
        }

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

        .news-item:hover .news-thumb img {
            transform: scale(1.03);
        }

        .news-body {
            min-width: 0;
        }

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-title);
            margin: 0 0 6px;
            line-height: 1.45;
        }

        .news-body h3 a {
            color: inherit;
        }

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

        .news-body p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.6;
            margin: 0 0 10px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 10px 14px;
            font-size: 13px;
            color: var(--color-text-muted);
        }

        .badge-soft {
            display: inline-block;
            background: #E0EDEB;
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 999px;
        }

        .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .25s ease;
        }

        .read-more:hover {
            color: var(--color-accent);
            gap: 8px;
        }

        .empty-state {
            background: #F0F3F1;
            border-radius: var(--radius-card);
            padding: 56px 24px;
            text-align: center;
            color: var(--color-text-muted);
            font-size: 15px;
        }

        .empty-state svg {
            width: 40px;
            height: 40px;
            margin: 0 auto 16px;
            color: var(--color-primary);
            opacity: .5;
            display: block;
        }

        .case-list {
            border-top: 1px solid var(--color-border);
        }

        .case-row {
            display: grid;
            grid-template-columns: 72px 1fr auto;
            gap: 28px;
            align-items: center;
            padding: 40px 0;
            border-bottom: 1px solid var(--color-border);
            transition: background .3s ease;
        }

        .case-row:hover {
            background: rgba(19, 80, 79, .02);
        }

        .case-num {
            font-size: 46px;
            font-weight: 600;
            color: var(--color-gold);
            line-height: 1;
            font-variant-numeric: tabular-nums;
        }

        .case-info h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--color-text-title);
            margin: 0 0 8px;
        }

        .case-info p {
            color: var(--color-text-muted);
            font-size: 15px;
            line-height: 1.65;
            margin: 0 0 8px;
        }

        .case-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: gap .25s ease;
        }

        .case-link:hover {
            color: var(--color-accent);
            gap: 8px;
        }

        .case-metric {
            font-size: 22px;
            font-weight: 700;
            color: var(--color-primary);
            white-space: nowrap;
            text-align: right;
            font-variant-numeric: tabular-nums;
        }

        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
            align-items: stretch;
        }

        .price-card {
            position: relative;
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            padding: 38px 30px 32px;
            display: flex;
            flex-direction: column;
            box-shadow: var(--shadow-card);
            transition: transform .3s ease, box-shadow .3s ease;
        }

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

        .price-card--featured {
            border: 2px solid var(--color-accent);
            box-shadow: 0 10px 28px rgba(232, 97, 60, .12);
        }

        .badge-recommend {
            position: absolute;
            top: -13px;
            right: 26px;
            background: var(--color-gold);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 14px;
            border-radius: 999px;
            letter-spacing: 1px;
            box-shadow: 0 4px 10px rgba(229, 168, 61, .3);
        }

        .price-name {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-title);
            margin-bottom: 10px;
        }

        .price-tag {
            font-size: 34px;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1.15;
            margin-bottom: 4px;
            font-variant-numeric: tabular-nums;
        }

        .price-tag small {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-muted);
            margin-left: 2px;
        }

        .price-desc {
            font-size: 13px;
            color: var(--color-text-muted);
            margin-bottom: 26px;
            padding-bottom: 22px;
            border-bottom: 1px solid var(--color-border);
        }

        .price-features {
            margin-bottom: 30px;
            flex: 1;
        }

        .price-features li {
            position: relative;
            padding-left: 28px;
            font-size: 14px;
            color: var(--color-text-body);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .price-features li::before {
            content: '';
            position: absolute;
            left: 2px;
            top: 5px;
            width: 14px;
            height: 7px;
            border-left: 2px solid var(--color-primary);
            border-bottom: 2px solid var(--color-primary);
            transform: rotate(-45deg);
        }

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

        .faq-accordion .accordion-item {
            background: var(--color-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow .3s ease;
        }

        .faq-accordion .accordion-item:hover {
            box-shadow: var(--shadow-card);
        }

        .faq-accordion .accordion-title {
            position: relative;
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 20px 24px 20px 20px;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-title);
            background: transparent;
            border: 0;
            transition: color .3s ease, background .3s ease;
            line-height: 1.5;
        }

        .faq-accordion .accordion-title::before {
            content: '+';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: rgba(19, 80, 79, .08);
            color: var(--color-primary);
            font-size: 16px;
            font-weight: 600;
            flex: 0 0 24px;
            transition: background .3s ease, color .3s ease;
            margin-right: 4px;
        }

        .faq-accordion .accordion-title::after {
            display: none;
        }

        .faq-accordion .accordion-title:hover {
            background: rgba(19, 80, 79, .04);
            color: var(--color-primary);
        }

        .faq-accordion .accordion-item.is-active {
            box-shadow: var(--shadow-card);
            border-left: 4px solid var(--color-accent);
        }

        .faq-accordion .accordion-item.is-active .accordion-title {
            color: var(--color-primary);
        }

        .faq-accordion .accordion-item.is-active .accordion-title::before {
            content: '−';
            background: var(--color-accent);
            color: #fff;
        }

        .faq-accordion .accordion-content {
            padding: 0 24px 22px 58px;
            border: 0;
            background: transparent;
            color: var(--color-text-muted);
            font-size: 14px;
            line-height: 1.75;
        }

        .faq-accordion .accordion-content p {
            margin: 0;
        }

        .cta-band {
            background: var(--color-primary-deep);
            text-align: center;
            padding: 80px 24px;
            border-top: 1px solid var(--color-gold);
            margin-top: 56px;
        }

        .cta-band h2 {
            color: #fff;
            font-size: 26px;
            font-weight: 700;
            margin: 0 0 14px;
            line-height: 1.4;
        }

        .cta-band p {
            color: #B8C9C7;
            font-size: 16px;
            margin: 0 0 30px;
        }

        .site-footer {
            background: var(--color-primary-deep);
            padding: 64px 0 24px;
            color: #B8C9C7;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 48px;
            padding-bottom: 48px;
            border-bottom: 1px solid rgba(255, 255, 255, .12);
        }

        .footer-brand-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 14px;
            letter-spacing: 1px;
        }

        .footer-brand-dot {
            display: inline-block;
            width: 10px;
            height: 10px;
            border-radius: 3px;
            background: var(--color-accent);
            margin-right: 8px;
            vertical-align: 2px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #93A5A2;
            margin: 0;
            max-width: 260px;
        }

        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }

        .footer-links a {
            display: block;
            padding: 6px 0;
            font-size: 14px;
            color: #B8C9C7;
            text-decoration: none;
            transition: color .2s ease, padding-left .2s ease;
        }

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

        .footer-contact p {
            font-size: 14px;
            margin: 0 0 10px;
            color: #B8C9C7;
            display: flex;
            align-items: flex-start;
            gap: 8px;
        }

        .footer-contact p svg {
            width: 16px;
            height: 16px;
            flex: 0 0 16px;
            margin-top: 4px;
            color: var(--color-gold);
        }

        .footer-bottom {
            padding-top: 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 14px;
            color: rgba(255, 255, 255, .5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, .6);
        }

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

        @media (max-width: 1024px) {
            .features-wrap {
                gap: 40px;
            }

            .features-grid {
                gap: 18px;
            }

            .scene-item {
                gap: 40px;
            }

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

        @media (max-width: 900px) {
            .menu-toggle {
                display: flex;
            }

            .site-nav {
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                align-items: flex-start;
                gap: 0;
                padding: 20px 24px 24px;
                display: none;
                box-shadow: 0 18px 36px rgba(0, 0, 0, .12);
                border-bottom: 1px solid var(--color-border);
            }

            .site-nav.is-open {
                display: flex;
            }

            .nav-list {
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                width: 100%;
            }

            .nav-list li {
                width: 100%;
            }

            .nav-link {
                display: block;
                padding: 14px 0;
                color: var(--color-text-title) !important;
                border-bottom: 1px solid var(--color-border);
                font-size: 16px;
            }

            .nav-link.is-active {
                color: var(--color-primary) !important;
            }

            .nav-link.is-active::after {
                display: none;
            }

            .nav-link::after {
                display: none;
            }

            .nav-side {
                width: 100%;
                margin: 18px 0 0;
                padding-top: 16px;
                border-top: 1px solid var(--color-border);
                gap: 12px;
            }

            .nav-login {
                color: var(--color-text-title);
                padding: 8px 12px;
            }

            .nav-side .btn {
                flex: 1;
            }

            .hero-title {
                font-size: 34px;
            }

            .hero-sub {
                font-size: 16px;
            }

            .features-wrap {
                flex-direction: column;
            }

            .features-intro {
                position: static;
                flex: 1 1 auto;
            }

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

            .scene-item {
                grid-template-columns: 1fr;
            }

            .scene-item--reverse .scene-media {
                order: 0;
            }

            .scene-media img {
                height: 280px;
            }

            .pricing-grid {
                grid-template-columns: 1fr;
                max-width: 480px;
                margin: 0 auto;
            }
        }

        @media (max-width: 640px) {
            .section {
                padding: 56px 0;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                margin-bottom: 32px;
            }

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

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

            .stat-num {
                font-size: 24px;
            }

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

            .news-item {
                grid-template-columns: 96px 1fr;
                gap: 14px;
                padding: 12px;
            }

            .news-thumb {
                width: 96px;
                height: 78px;
                flex-basis: 96px;
            }

            .news-body h3 {
                font-size: 15px;
            }

            .news-body p {
                -webkit-line-clamp: 2;
            }

            .case-row {
                grid-template-columns: 40px 1fr;
                gap: 16px;
                padding: 30px 0;
            }

            .case-num {
                font-size: 32px;
            }

            .case-metric {
                grid-column: 2;
                text-align: left;
                font-size: 18px;
            }

            .price-card {
                padding: 30px 22px 24px;
            }

            .cta-band {
                padding: 56px 20px;
            }

            .cta-band h2 {
                font-size: 22px;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .hero-decor {
                display: none;
            }
        }

/* roulang page: article */
:root {
            --color-primary: #13504F;
            --color-primary-dark: #0E3E3D;
            --color-primary-deep: #0B2D2C;
            --color-accent: #E8613C;
            --color-accent-dark: #D04B2A;
            --color-gold: #E5A83D;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-text-title: #1A1F1E;
            --color-text-body: #3D4543;
            --color-text-muted: #6E7875;
            --color-border: #DDE3E0;
            --color-success: #2F9E74;
            --color-error: #C6453A;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-default: 0 2px 8px rgba(19, 80, 79, 0.06);
            --shadow-hover: 0 10px 28px rgba(19, 80, 79, 0.12);
        }
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            font-variant-numeric: tabular-nums;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        button {
            font-family: inherit;
            cursor: pointer;
        }
        ul, ol {
            list-style: none;
        }
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }
        /* ===== Header & Nav ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            height: 68px;
            background: rgba(255, 255, 255, 0.92);
            -webkit-backdrop-filter: blur(12px);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--color-border);
            transition: box-shadow .3s ease;
        }
        .site-header.scrolled {
            box-shadow: 0 4px 20px rgba(19, 80, 79, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .brand {
            font-size: 16px;
            font-weight: 600;
            letter-spacing: 1px;
            color: var(--color-primary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .brand::before {
            content: '';
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
            flex-shrink: 0;
        }
        .site-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .nav-link {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-body);
            position: relative;
            padding: 6px 0;
            transition: color .3s ease;
            white-space: nowrap;
        }
        .nav-link::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: width .3s ease;
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.is-active::after {
            width: 100%;
        }
        .nav-link.is-active::before {
            content: '';
            position: absolute;
            left: 50%;
            bottom: -6px;
            transform: translateX(-50%);
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
        }
        .nav-side {
            display: flex;
            align-items: center;
            gap: 16px;
        }
        .nav-login {
            font-size: 14px;
            color: var(--color-text-body);
            transition: color .3s;
            white-space: nowrap;
        }
        .nav-login:hover {
            color: var(--color-primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            transition: all .3s ease;
            line-height: 1.2;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #FFFFFF;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(19, 80, 79, 0.2);
        }
        .btn-primary:focus-visible {
            outline: 3px solid rgba(19, 80, 79, 0.3);
            outline-offset: 2px;
        }
        .btn-sm {
            padding: 8px 20px;
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #FFFFFF;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.1);
            color: #FFFFFF;
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            width: 36px;
            height: 36px;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            border-radius: 6px;
            transition: background .3s;
        }
        .nav-toggle:hover {
            background: rgba(19, 80, 79, 0.06);
        }
        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all .3s;
        }
        .mobile-menu {
            display: none;
            background: #FFFFFF;
            padding: 8px 24px 20px;
            border-bottom: 1px solid var(--color-border);
            box-shadow: 0 12px 24px rgba(19, 80, 79, 0.06);
        }
        .mobile-menu > a {
            display: block;
            padding: 13px 0;
            font-size: 15px;
            color: var(--color-text-body);
            border-bottom: 1px solid #F0F3F1;
            transition: color .3s, padding-left .3s;
        }
        .mobile-menu > a:hover {
            color: var(--color-primary);
            padding-left: 6px;
        }
        .mobile-menu > a.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-actions {
            display: flex;
            align-items: center;
            gap: 16px;
            padding-top: 16px;
        }
        .mobile-actions .nav-login {
            font-size: 15px;
        }
        /* ===== Breadcrumb ===== */
        .breadcrumb-wrap {
            padding: 24px 0 0;
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .breadcrumb a {
            color: var(--color-text-muted);
            transition: color .3s;
        }
        .breadcrumb a:hover {
            color: var(--color-primary);
        }
        .breadcrumb .current {
            color: var(--color-text-title);
            font-weight: 500;
            max-width: 360px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .breadcrumb-sep {
            color: #C0C9C6;
            font-size: 13px;
        }
        /* ===== Article Header ===== */
        .article-header {
            padding: 32px 0 16px;
        }
        .article-category {
            display: inline-block;
            background: #E0EDEB;
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 500;
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .article-title {
            font-size: 36px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--color-text-title);
            max-width: 860px;
            margin-bottom: 20px;
        }
        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 8px;
            color: var(--color-text-muted);
            font-size: 14px;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta span + span::before {
            content: '';
            display: inline-block;
            width: 1px;
            height: 12px;
            background: var(--color-border);
            margin-right: 8px;
        }
        .article-meta svg {
            width: 15px;
            height: 15px;
            stroke: var(--color-primary);
            flex-shrink: 0;
        }
        /* ===== Article Layout ===== */
        .article-section {
            padding: 24px 0 64px;
        }
        .article-layout {
            display: flex;
            align-items: flex-start;
            gap: 48px;
        }
        .article-main {
            flex: 0 0 76%;
            min-width: 0;
        }
        .article-aside {
            flex: 0 0 24%;
            min-width: 0;
            position: sticky;
            top: 88px;
            align-self: flex-start;
            max-height: calc(100vh - 110px);
            overflow-y: auto;
            scrollbar-width: thin;
        }
        /* ===== Article Body ===== */
        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--color-text-body);
            background: var(--color-card);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-default);
            padding: 40px 44px;
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body h2 {
            font-size: 28px;
            font-weight: 700;
            color: var(--color-text-title);
            margin: 36px 0 18px;
            padding-left: 16px;
            border-left: 4px solid var(--color-primary);
            line-height: 1.3;
        }
        .article-body h3 {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text-title);
            margin: 32px 0 14px;
            line-height: 1.35;
        }
        .article-body h4 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-title);
            margin: 24px 0 12px;
        }
        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: 8px;
            margin: 28px auto;
            box-shadow: 0 4px 16px rgba(19, 80, 79, 0.08);
        }
        .article-body figcaption {
            font-size: 13px;
            color: var(--color-text-muted);
            text-align: center;
            margin-top: -18px;
            margin-bottom: 28px;
        }
        .article-body blockquote {
            border-left: 4px solid var(--color-primary);
            background: #F0F3F1;
            padding: 20px 24px;
            margin: 28px 0;
            border-radius: 0 8px 8px 0;
            color: var(--color-text-body);
            font-style: normal;
        }
        .article-body blockquote p:last-child {
            margin-bottom: 0;
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 28px 0;
            font-size: 14px;
        }
        .article-body th,
        .article-body td {
            padding: 12px 14px;
            border-bottom: 1px solid var(--color-border);
            text-align: left;
            vertical-align: top;
        }
        .article-body th {
            border-top: 2px solid var(--color-primary);
            font-weight: 600;
            color: var(--color-text-title);
            background: #F8FAF9;
        }
        .article-body tr:hover td {
            background: #F0F6F5;
        }
        .article-body ul {
            margin: 16px 0 16px 4px;
            list-style: none;
        }
        .article-body ul li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 8px;
        }
        .article-body ul li::before {
            content: '';
            position: absolute;
            left: 4px;
            top: 12px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-accent);
        }
        .article-body ol {
            margin: 16px 0 16px 4px;
            list-style: none;
            counter-reset: article-list;
        }
        .article-body ol li {
            position: relative;
            padding-left: 32px;
            margin-bottom: 8px;
            counter-increment: article-list;
        }
        .article-body ol li::before {
            content: counter(article-list) ".";
            position: absolute;
            left: 0;
            top: 0;
            color: var(--color-primary);
            font-weight: 600;
            font-size: 15px;
        }
        .article-body a {
            color: var(--color-primary);
            text-decoration: underline;
            text-underline-offset: 4px;
            text-decoration-color: rgba(19, 80, 79, 0.25);
            transition: color .3s, text-decoration-color .3s;
        }
        .article-body a:hover {
            color: var(--color-accent);
            text-decoration-color: var(--color-accent);
        }
        .article-body code {
            background: #F0F3F1;
            border-radius: 4px;
            padding: 2px 8px;
            font-size: 14px;
            color: var(--color-primary-dark);
        }
        .article-body hr {
            border: none;
            border-top: 1px solid var(--color-border);
            margin: 36px 0;
        }
        .article-feature-image {
            margin-bottom: 32px;
        }
        .article-feature-image img {
            width: 100%;
            max-height: 440px;
            object-fit: cover;
            border-radius: 12px;
            margin: 0;
            box-shadow: var(--shadow-default);
        }
        /* ===== Aside ===== */
        .aside-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-title);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--color-primary);
            position: relative;
        }
        .aside-card {
            display: block;
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            margin-bottom: 16px;
            transition: box-shadow .3s, transform .3s;
        }
        .aside-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .aside-card img {
            width: 100%;
            height: auto;
            aspect-ratio: 16 / 9;
            object-fit: cover;
        }
        .aside-card-body {
            padding: 12px 14px;
        }
        .aside-card-title {
            font-size: 14px;
            line-height: 1.5;
            font-weight: 500;
            color: var(--color-text-title);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: color .3s;
        }
        .aside-card:hover .aside-card-title {
            color: var(--color-primary);
        }
        /* ===== Recommend ===== */
        .recommend-section {
            padding: 48px 0 24px;
            border-top: 1px solid var(--color-border);
            background: linear-gradient(to bottom, rgba(255, 255, 255, 0.4), transparent);
        }
        .recommend-title {
            font-size: 26px;
            font-weight: 700;
            color: var(--color-text-title);
            margin-bottom: 28px;
            position: relative;
            padding-bottom: 14px;
        }
        .recommend-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 48px;
            height: 3px;
            background: var(--color-accent);
            border-radius: 3px;
        }
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .recommend-card {
            display: block;
            background: var(--color-card);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
            transition: box-shadow .3s, transform .3s;
        }
        .recommend-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }
        .recommend-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            transition: transform .5s ease;
        }
        .recommend-card:hover img {
            transform: scale(1.04);
        }
        .recommend-card-body {
            padding: 20px 22px 22px;
        }
        .recommend-card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--color-text-title);
            margin-bottom: 8px;
            line-height: 1.4;
            transition: color .3s;
        }
        .recommend-card:hover .recommend-card-title {
            color: var(--color-primary);
        }
        .recommend-card-desc {
            font-size: 14px;
            color: var(--color-text-muted);
            margin-bottom: 14px;
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .recommend-card-meta {
            font-size: 13px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .recommend-card-meta .tag {
            display: inline-block;
            background: #E0EDEB;
            color: var(--color-primary);
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
        }
        .article-back {
            padding: 32px 0 8px;
        }
        .article-back a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--color-primary);
            font-weight: 500;
            font-size: 14px;
            transition: gap .3s, color .3s;
        }
        .article-back a:hover {
            gap: 14px;
            color: var(--color-accent);
        }
        .article-back svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
        }
        /* ===== Not Found ===== */
        .article-not-found {
            padding: 120px 0 140px;
            text-align: center;
        }
        .article-not-found p {
            font-size: 22px;
            font-weight: 600;
            color: var(--color-text-title);
            margin-bottom: 24px;
        }
        .article-not-found a.btn {
            text-decoration: none;
        }
        /* ===== CTA Band (用于文章页底部微弱氛围) ===== */
        .article-cta-band {
            background: var(--color-primary-deep);
            border-top: 1px solid var(--color-gold);
            padding: 56px 0;
            margin-top: 16px;
        }
        .article-cta-inner {
            text-align: center;
            max-width: 640px;
            margin: 0 auto;
        }
        .article-cta-inner h2 {
            color: #FFFFFF;
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .article-cta-inner p {
            color: rgba(255, 255, 255, 0.7);
            font-size: 15px;
            margin-bottom: 24px;
        }
        /* ===== Footer ===== */
        .site-footer {
            background: var(--color-primary-deep);
            color: #B8C9C7;
            padding: 64px 0 0;
            margin-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1.3fr;
            gap: 48px;
            padding-bottom: 48px;
        }
        .footer-brand-title {
            font-size: 18px;
            font-weight: 600;
            color: #FFFFFF;
            display: flex;
            align-items: center;
            gap: 10px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }
        .footer-brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: #8FA5A3;
            max-width: 280px;
        }
        .footer-heading {
            font-size: 14px;
            font-weight: 600;
            color: #FFFFFF;
            margin-bottom: 18px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }
        .footer-links a {
            font-size: 14px;
            color: #B8C9C7;
            transition: color .3s;
            position: relative;
        }
        .footer-links a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -2px;
            width: 0;
            height: 1px;
            background: #FFFFFF;
            transition: width .3s;
        }
        .footer-links a:hover {
            color: #FFFFFF;
        }
        .footer-links a:hover::after {
            width: 100%;
        }
        .footer-contact p {
            font-size: 14px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            color: #B8C9C7;
            word-break: break-all;
        }
        .footer-contact svg {
            width: 16px;
            height: 16px;
            color: var(--color-accent);
            flex-shrink: 0;
            margin-top: 5px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.45);
        }
        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .article-layout {
                flex-direction: column;
                gap: 40px;
            }
            .article-main {
                flex: 1 1 100%;
            }
            .article-aside {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 36px;
            }
            .recommend-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .site-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .article-body {
                padding: 28px 24px;
            }
            .article-title {
                font-size: 30px;
            }
        }
        @media (max-width: 640px) {
            .grid-container {
                padding: 0 18px;
            }
            .article-title {
                font-size: 26px;
            }
            .article-header {
                padding: 24px 0 12px;
            }
            .article-body {
                padding: 22px 18px;
                border-radius: 10px;
            }
            .article-body h2 {
                font-size: 22px;
                margin: 28px 0 14px;
            }
            .article-body h3 {
                font-size: 19px;
                margin: 24px 0 12px;
            }
            .article-meta span + span::before {
                display: none;
            }
            .article-meta {
                gap: 14px;
                flex-direction: column;
                align-items: flex-start;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .recommend-card img {
                height: 160px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                font-size: 13px;
            }
            .article-not-found {
                padding: 80px 0 100px;
            }
            .article-section {
                padding-bottom: 40px;
            }
        }
        @media (max-width: 520px) {
            .article-title {
                font-size: 24px;
            }
            .recommend-section {
                padding: 32px 0 16px;
            }
            .article-back {
                padding: 20px 0 4px;
            }
        }

/* roulang page: category1 */
:root {
  --color-primary: #13504F;
  --color-primary-dark: #0E3E3D;
  --color-primary-deep: #0B2D2C;
  --color-accent: #E8613C;
  --color-accent-dark: #D04B2A;
  --color-gold: #E5A83D;
  --color-bg: #F7F4EE;
  --color-card: #FFFFFF;
  --color-text-title: #1A1F1E;
  --color-text-body: #3D4543;
  --color-text-muted: #6E7875;
  --color-border: #DDE3E0;
  --color-success: #2F9E74;
  --color-error: #C6453A;
  --shadow-default: 0 2px 8px rgba(19, 80, 79, 0.06);
  --shadow-hover: 0 10px 28px rgba(19, 80, 79, 0.12);
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-img: 8px;
  --transition: 0.3s ease;
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
}

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

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

body {
  font-family: var(--font-stack);
  background: var(--color-bg);
  color: var(--color-text-body);
  font-size: 16px;
  line-height: 1.75;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

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

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

.grid-container {
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: #EFF2EF;
}

.section-eyebrow {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 12px;
  background: rgba(232, 97, 60, 0.08);
  padding: 4px 12px;
  border-radius: 999px;
}

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

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

.section-title-wrap h2 {
  font-size: 32px;
  line-height: 1.3;
  color: var(--color-text-title);
  font-weight: 700;
  margin-bottom: 12px;
}

.section-title-wrap p {
  font-size: 16px;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: var(--radius-btn);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.2;
  padding: 12px 24px;
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition), color var(--transition), border-color var(--transition);
  text-align: center;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(19, 80, 79, 0.18);
}

.btn-primary:focus-visible {
  outline: 3px solid rgba(19, 80, 79, 0.3);
  outline-offset: 2px;
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
}

.btn-accent:hover {
  background: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(232, 97, 60, 0.22);
}

.btn-outline {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: transparent;
}

.btn-outline:hover {
  background: rgba(19, 80, 79, 0.08);
  color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}

.btn-ghost-light {
  border-color: rgba(255,255,255,0.8);
  color: #fff;
  background: transparent;
}

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

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-sm {
  padding: 6px 16px;
  font-size: 13px;
}

.btn-block {
  width: 100%;
  justify-content: center;
}

.badge {
  display: inline-block;
  background: #E0EDEB;
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  line-height: 1.4;
}

.badge-hot {
  background: rgba(232, 97, 60, 0.1);
  color: var(--color-accent);
}

.badge-gold {
  background: rgba(229, 168, 61, 0.16);
  color: #A9771A;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  height: 68px;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  height: 68px;
}

.site-brand {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-text-title);
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

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

.site-brand::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex: 1;
  gap: 24px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-body);
  position: relative;
  padding: 6px 0;
  white-space: nowrap;
}

.nav-link::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--color-primary);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

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

.nav-link:hover::before {
  transform: scaleX(1);
}

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

.nav-link.is-active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}

.nav-link.is-active::before {
  transform: scaleX(0);
}

.nav-side {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-login {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text-body);
  padding: 6px 4px;
}

.nav-login:hover {
  color: var(--color-primary);
}

.nav-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  transition: background var(--transition);
}

.nav-burger span {
  width: 20px;
  height: 2px;
  background: var(--color-text-title);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-burger:hover {
  background: rgba(19, 80, 79, 0.06);
}

.nav-burger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-burger.active span:nth-child(2) {
  opacity: 0;
}

.nav-burger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.cat-hero {
  position: relative;
  height: 260px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-primary-deep);
}

.cat-hero-bg {
  position: absolute;
  inset: 0;
  background-image: url('/assets/images/backpic/back-1.webp');
  background-size: cover;
  background-position: center;
  opacity: 0.45;
}

.cat-hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, var(--color-primary-deep) 0%, rgba(11, 45, 44, 0.85) 45%, rgba(11, 45, 44, 0.45) 100%);
  z-index: 1;
}

.cat-hero-index {
  position: absolute;
  top: 8px;
  right: 40px;
  font-size: 110px;
  font-weight: 800;
  line-height: 1;
  color: rgba(229, 168, 61, 0.18);
  z-index: 2;
  letter-spacing: -4px;
  user-select: none;
}

.cat-hero-inner {
  position: relative;
  z-index: 3;
  width: 100%;
}

.cat-hero-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

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

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

.cat-hero-breadcrumb .sep {
  opacity: 0.5;
}

.cat-hero-breadcrumb .current {
  color: rgba(255, 255, 255, 0.9);
}

.cat-hero h1 {
  font-size: 34px;
  line-height: 1.2;
  font-weight: 700;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.cat-hero p {
  font-size: 15px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  max-width: 680px;
}

.cat-intro {
  background: var(--color-bg);
}

.cat-intro-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 56px;
  align-items: start;
}

.cat-intro-left {
  position: sticky;
  top: 100px;
}

.cat-intro-left h2 {
  font-size: 32px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--color-text-title);
  margin: 12px 0 16px;
}

.cat-intro-left p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

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

.link-arrow i {
  transition: transform var(--transition);
}

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

.value-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-default);
  transition: box-shadow var(--transition), transform var(--transition);
  position: relative;
  overflow: hidden;
}

.value-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--color-primary);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition);
}

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

.value-card:hover::before {
  transform: scaleY(1);
}

.value-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  background: rgba(19, 80, 79, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-primary);
  margin-bottom: 18px;
}

.value-card h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

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

.value-card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

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

.topic-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

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

.topic-card-media {
  position: relative;
  height: 140px;
  overflow: hidden;
}

.topic-card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

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

.topic-card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 45, 44, 0) 55%, rgba(11, 45, 44, 0.45) 100%);
}

.topic-card-tag {
  position: absolute;
  left: 12px;
  bottom: 10px;
  z-index: 2;
  background: rgba(255, 255, 255, 0.92);
  color: var(--color-primary);
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.topic-card-body {
  padding: 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.topic-card-body h3 {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

.topic-card-body p {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 14px;
  flex: 1;
}

.topic-card-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.topic-card-more i {
  transition: transform var(--transition);
}

.topic-card:hover .topic-card-more i {
  transform: translateX(4px);
}

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

.news-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 24px;
  box-shadow: var(--shadow-default);
  transition: box-shadow var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.news-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

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

.news-card-title {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text-title);
  margin-bottom: 10px;
}

.news-card-title a {
  color: inherit;
}

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

.news-card-excerpt {
  font-size: 14px;
  line-height: 1.7;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  flex: 1;
}

.news-card-more {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: auto;
}

.news-card-more i {
  transition: transform var(--transition);
}

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

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

.process-step {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 28px 24px;
  box-shadow: var(--shadow-default);
  position: relative;
  transition: box-shadow var(--transition), transform var(--transition);
}

.process-step:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.process-step-num {
  font-size: 32px;
  font-weight: 800;
  color: rgba(19, 80, 79, 0.2);
  line-height: 1;
  margin-bottom: 16px;
  font-variant-numeric: tabular-nums;
}

.process-step h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-title);
  margin-bottom: 8px;
}

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

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

.faq-accordion .accordion-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: 12px;
  box-shadow: var(--shadow-default);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
  position: relative;
}

.faq-accordion .accordion-item.is-active {
  border-left: 4px solid var(--color-accent);
  box-shadow: var(--shadow-hover);
}

.faq-accordion .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-title);
  padding: 18px 22px;
  position: relative;
  transition: color var(--transition);
}

.faq-accordion .accordion-title:hover {
  color: var(--color-primary);
}

.faq-accordion .accordion-title::before,
.faq-accordion .accordion-title::after {
  content: none;
}

.faq-accordion .accordion-title .faq-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  border-radius: 50%;
  background: rgba(19, 80, 79, 0.08);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: var(--color-primary);
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

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

.faq-accordion .accordion-content {
  padding: 0 22px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--color-text-muted);
  border-top: 1px dashed var(--color-border);
}

.faq-accordion .accordion-content p {
  padding-top: 14px;
}

.cat-cta {
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.cat-cta-inner {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: 20px;
  padding: 56px 48px;
  text-align: center;
  box-shadow: var(--shadow-default);
  position: relative;
  overflow: hidden;
}

.cat-cta-inner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 3px;
  background: var(--color-gold);
  border-radius: 3px;
}

.cat-cta-inner h2 {
  font-size: 26px;
  font-weight: 700;
  color: var(--color-text-title);
  margin-bottom: 10px;
}

.cat-cta-inner p {
  font-size: 15px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

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

.site-footer {
  background: var(--color-primary-deep);
  color: #B8C9C7;
  padding: 64px 0 28px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand-title {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  letter-spacing: 1px;
}

.footer-brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  display: inline-block;
  flex-shrink: 0;
}

.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  color: #9DB3B1;
  max-width: 260px;
}

.footer-heading {
  font-size: 14px;
  font-weight: 600;
  color: #fff;
  letter-spacing: 1px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 24px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  font-size: 14px;
  color: #B8C9C7;
  padding: 3px 0;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-links a:hover {
  color: #fff;
  padding-left: 6px;
}

.footer-contact p {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14px;
  color: #B8C9C7;
  line-height: 1.6;
  margin-bottom: 12px;
}

.footer-contact svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--color-gold);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(184, 201, 199, 0.75);
}

.footer-bottom span:last-child {
  color: rgba(184, 201, 199, 0.55);
}

@media (max-width: 1024px) {
  .cat-intro-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .cat-intro-left {
    position: static;
  }
  .topics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .process-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
  }
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .section {
    padding: 56px 0;
  }
  .section-title-wrap h2 {
    font-size: 26px;
  }
  .header-inner {
    position: relative;
  }
  .site-nav {
    position: absolute;
    top: 68px;
    left: -24px;
    right: -24px;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 12px 28px rgba(0,0,0,0.1);
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 20px;
    gap: 12px;
    z-index: 99;
  }
  .site-nav.is-open {
    display: flex;
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    width: 100%;
  }
  .nav-list li {
    width: 100%;
  }
  .nav-link {
    display: block;
    padding: 10px 0;
    font-size: 16px;
    border-bottom: 1px solid rgba(221, 227, 224, 0.6);
  }
  .nav-link.is-active::after {
    left: 0;
    transform: none;
    width: 16px;
    height: 3px;
    border-radius: 3px;
    bottom: 2px;
  }
  .nav-side {
    width: 100%;
    justify-content: flex-start;
    gap: 12px;
    margin-top: 8px;
  }
  .nav-burger {
    display: flex;
  }
  .cat-hero {
    height: auto;
    min-height: 240px;
    padding: 48px 0;
  }
  .cat-hero h1 {
    font-size: 28px;
  }
  .cat-hero p {
    font-size: 14px;
  }
  .cat-hero-index {
    font-size: 72px;
    right: 16px;
  }
  .topics-grid {
    grid-template-columns: 1fr;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
  .process-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .cat-cta-inner {
    padding: 40px 24px;
  }
  .cat-cta-inner h2 {
    font-size: 22px;
  }
  .cta-actions {
    flex-direction: column;
    width: 100%;
  }
  .cta-actions .btn {
    width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 520px) {
  .grid-container {
    padding-left: 18px;
    padding-right: 18px;
  }
  .brand-pill {
    font-size: 13px;
  }
}

/* roulang page: category2 */
:root {
  --color-primary: #13504F;
  --color-primary-dark: #0E3E3D;
  --color-primary-deep: #0B2D2C;
  --color-accent: #E8613C;
  --color-accent-dark: #D04B2A;
  --color-gold: #E5A83D;
  --color-bg: #F7F4EE;
  --color-card: #FFFFFF;
  --color-text-title: #1A1F1E;
  --color-text-body: #3D4543;
  --color-text-muted: #6E7875;
  --color-border: #DDE3E0;
  --color-success: #2F9E74;
  --color-error: #C6453A;
  --radius-card: 12px;
  --radius-btn: 8px;
  --radius-img: 8px;
  --shadow-default: 0 2px 8px rgba(19, 80, 79, 0.06);
  --shadow-hover: 0 10px 28px rgba(19, 80, 79, 0.12);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
  --space-section: 80px;
  --space-section-md: 56px;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text-body);
  background: var(--color-bg);
  font-variant-numeric: tabular-nums;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; height: auto; }
a { color: inherit; text-decoration: none; transition: color 0.25s ease; }
a:focus-visible, button:focus-visible {
  outline: 3px solid rgba(19, 80, 79, 0.25);
  outline-offset: 2px;
  border-radius: 4px;
}
ul, ol { list-style: none; }
h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  color: var(--color-text-title);
  font-weight: 700;
}
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 15px;
  padding: 10px 24px;
  border-radius: var(--radius-btn);
  transition: all 0.3s ease;
  text-decoration: none;
  line-height: 1.4;
}
.btn:active { transform: translateY(0); }
.btn-sm { padding: 6px 16px; font-size: 14px; }
.btn-primary { background: var(--color-primary); color: #fff; box-shadow: 0 2px 6px rgba(19,80,79,0.18); }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-accent { background: var(--color-accent); color: #fff; box-shadow: 0 2px 6px rgba(232,97,60,0.18); }
.btn-accent:hover { background: var(--color-accent-dark); transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn-outline { background: transparent; border: 1px solid var(--color-primary); color: var(--color-primary); }
.btn-outline:hover { background: rgba(19,80,79,0.08); }
.btn-light { background: #fff; color: var(--color-primary); }
.btn-light:hover { background: #F2B84B; color: var(--color-primary-deep); transform: translateY(-2px); }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 68px;
  background: transparent;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
}
.site-nav.is-scrolled {
  background: rgba(255,255,255,0.92);
  border-bottom-color: var(--color-border);
  box-shadow: 0 2px 12px rgba(19,80,79,0.06);
}
.site-nav .nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.brand-logo { font-size: 18px; font-weight: 700; letter-spacing: 0.5px; color: var(--color-text-title); display: flex; align-items: center; gap: 8px; }
.brand-logo .logo-icon { width: 28px; height: 28px; border-radius: 8px; background: var(--color-primary); display: inline-flex; align-items: center; justify-content: center; color: #fff; font-size: 14px; }
.site-nav .nav-list { display: flex; gap: 32px; align-items: center; }
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-text-body);
  position: relative;
  padding: 6px 0;
  transition: color 0.3s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width 0.3s ease;
}
.nav-link:hover { color: var(--color-primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.is-active { color: var(--color-primary-dark); font-weight: 600; }
.nav-link.is-active::after { display: none; }
.nav-link.is-active::before {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -4px;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
}
.nav-side { display: flex; align-items: center; gap: 16px; }
.nav-login { font-size: 14px; color: var(--color-text-body); font-weight: 500; }
.nav-login:hover { color: var(--color-primary); }
.nav-burger { display: none; width: 40px; height: 40px; background: transparent; border: 1px solid var(--color-border); border-radius: 8px; cursor: pointer; align-items: center; justify-content: center; }
.nav-burger i { font-size: 18px; color: var(--color-primary); }

.hero-band {
  background: var(--color-primary-deep) url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
  position: relative;
  min-height: 220px;
  display: flex;
  align-items: center;
}
.hero-band::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, rgba(11,45,44,0.92) 0%, rgba(11,45,44,0.7) 45%, rgba(11,45,44,0.35) 100%);
}
.hero-band .hero-num {
  position: absolute;
  top: 20px;
  right: 40px;
  font-size: 120px;
  font-weight: 800;
  color: rgba(229,168,61,0.28);
  line-height: 1;
  user-select: none;
  pointer-events: none;
  font-family: var(--font-sans);
}
.hero-band .inner { position: relative; z-index: 2; width: 100%; }
.hero-band h1 { color: #fff; font-size: 32px; margin-bottom: 8px; }
.hero-band p { color: rgba(255,255,255,0.8); font-size: 15px; max-width: 560px; }

.section { padding: var(--space-section) 0; }
.section-md { padding: 56px 0; }
.section-alt { background: #EDF1EE; }

.section-head { margin-bottom: 44px; }
.section-label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; letter-spacing: 1px; color: var(--color-accent); text-transform: uppercase; margin-bottom: 12px; }
.section-label::before { content: ""; width: 24px; height: 2px; background: var(--color-accent); border-radius: 2px; }
.section-head h2 { font-size: 32px; margin-bottom: 16px; }
.section-head p { font-size: 16px; color: var(--color-text-muted); max-width: 640px; }

.step-card { display: flex; gap: 28px; align-items: center; margin-bottom: 80px; }
.step-card:last-child { margin-bottom: 0; }
.step-card.reverse { flex-direction: row-reverse; }
.step-media { flex: 0 0 52%; }
.step-media img { width: 100%; height: 320px; object-fit: cover; border-radius: var(--radius-img); box-shadow: var(--shadow-default); transition: transform 0.4s ease, box-shadow 0.4s ease; }
.step-media:hover img { transform: scale(1.02); box-shadow: var(--shadow-hover); }
.step-content { flex: 1; }
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-primary);
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 18px;
}
.step-title { font-size: 20px; margin-bottom: 12px; color: var(--color-text-title); }
.step-text { font-size: 15px; color: var(--color-text-muted); margin-bottom: 20px; }
.step-list li { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 10px; font-size: 14px; color: var(--color-text-body); }
.step-list li::before { content: ""; flex: 0 0 6px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); margin-top: 8px; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.article-card {
  background: var(--color-card);
  border-radius: var(--radius-card);
  border: 1px solid var(--color-border);
  overflow: hidden;
  box-shadow: var(--shadow-default);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.article-card .card-media { height: 180px; overflow: hidden; }
.article-card .card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.4s ease; }
.article-card:hover .card-media img { transform: scale(1.04); }
.article-card .card-body { padding: 22px; }
.article-card .card-tag {
  display: inline-block;
  font-size: 12px;
  color: var(--color-primary);
  background: #E0EDEB;
  border-radius: 999px;
  padding: 2px 12px;
  margin-bottom: 10px;
  font-weight: 600;
}
.article-card h3 { font-size: 18px; margin-bottom: 8px; font-weight: 600; }
.article-card h3 a { color: var(--color-text-title); }
.article-card h3 a:hover { color: var(--color-primary); }
.article-card p { font-size: 14px; color: var(--color-text-muted); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-card .card-meta { display: flex; align-items: center; justify-content: space-between; margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--color-border); font-size: 13px; color: var(--color-text-muted); }
.article-card .card-meta i { font-size: 12px; color: var(--color-accent); }

.update-band { background: var(--color-card); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 36px 40px; display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; }
.update-item { text-align: center; }
.update-item .num { font-size: 32px; font-weight: 800; color: var(--color-primary); line-height: 1.2; }
.update-item .label { font-size: 13px; color: var(--color-text-muted); margin-top: 6px; }
.update-item .lbl { display: inline-block; background: #FFF3E0; color: var(--color-accent-dark); font-size: 12px; font-weight: 600; padding: 3px 12px; border-radius: 999px; margin-bottom: 8px; }

.faq-band .accordion { background: transparent; }
.faq-band .accordion-item {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-card);
  margin-bottom: 16px;
  overflow: hidden;
  transition: box-shadow 0.3s ease;
}
.faq-band .accordion-item.is-active { box-shadow: var(--shadow-hover); border-left: 4px solid var(--color-accent); }
.faq-band .accordion-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-text-title);
  cursor: pointer;
  transition: color 0.3s ease;
}
.faq-band .accordion-title:hover { color: var(--color-primary); }
.faq-band .accordion-title .fa { font-size: 18px; color: var(--color-accent); transition: transform 0.3s ease; }
.faq-band .accordion-item.is-active .accordion-title .fa { transform: rotate(45deg); }
.faq-band .accordion-content { padding: 0 24px 20px; font-size: 14px; color: var(--color-text-muted); line-height: 1.7; }

.cta-strip { background: linear-gradient(120deg, #FDF8F0, #FCF1E6); border: 1px solid var(--color-border); border-radius: var(--radius-card); padding: 56px 40px; text-align: center; margin-bottom: 80px; }
.cta-strip h2 { font-size: 26px; color: var(--color-text-title); margin-bottom: 8px; }
.cta-strip p { font-size: 15px; color: var(--color-text-muted); margin-bottom: 24px; }
.cta-strip .cta-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.site-footer { background: var(--color-primary-deep); padding: 60px 0 0; color: #B8C9C7; }
.site-footer .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.6fr; gap: 40px; padding-bottom: 44px; }
.site-footer .footer-brand-title { display: flex; align-items: center; gap: 8px; color: #fff; font-size: 18px; user-select: none; margin-bottom: 14px; }
.site-footer .footer-brand-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--color-accent); display: inline-block; }
.site-footer .footer-brand p { font-size: 14px; line-height: 1.6; color: rgba(184,201,199,0.8); }
.site-footer .footer-heading { font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 16px; letter-spacing: 0.5px; }
.site-footer .footer-links { display: flex; flex-direction: column; gap: 10px; }
.site-footer .footer-links a { font-size: 14px; color: #B8C9C7; transition: color 0.3s ease, padding-left 0.3s ease; }
.site-footer .footer-links a:hover { color: #fff; padding-left: 6px; text-decoration: underline; text-underline-offset: 4px; }
.site-footer .footer-contact p { display: flex; align-items: center; gap: 10px; font-size: 14px; margin-bottom: 10px; }
.site-footer .footer-contact svg { width: 18px; height: 18px; flex: 0 0 auto; stroke: var(--color-accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: rgba(184,201,199,0.7); }

@media (max-width: 1024px) {
  .site-nav .nav-list { gap: 20px; }
  .step-card, .step-card.reverse { flex-direction: column; gap: 24px; }
  .step-media { flex: auto; width: 100%; }
  .step-media img { height: 260px; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .update-band { grid-template-columns: 1fr 1fr; gap: 24px; }
  .site-footer .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  :root { --space-section: 56px; }
  .container { padding: 0 16px; }
  .site-nav { height: 60px; }
  .site-nav .nav-wrap { height: 60px; }
  .site-nav .nav-list { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--color-border); padding: 16px 20px; gap: 14px; }
  .site-nav .nav-list.is-open { display: flex; }
  .site-nav .nav-side { display: none; }
  .nav-burger { display: inline-flex; }
  .hero-band { min-height: 190px; }
  .hero-band h1 { font-size: 26px; }
  .hero-band .hero-num { font-size: 80px; right: 16px; }
  .section-head h2 { font-size: 26px; }
  .section-head p { font-size: 15px; }
  .card-grid { grid-template-columns: 1fr; }
  .step-media img { height: 200px; }
  .update-band { padding: 24px 20px; grid-template-columns: 1fr 1fr; }
  .update-item .num { font-size: 24px; }
  .faq-band .accordion-title { padding: 16px 18px; font-size: 14px; }
  .faq-band .accordion-content { padding: 0 18px 16px; }
  .cta-strip { padding: 40px 20px; margin-bottom: 56px; }
  .cta-strip h2 { font-size: 22px; }
  .cta-actions { flex-direction: column; align-items: center; }
  .btn { width: 100%; justify-content: center; }
  .site-footer .footer-grid { grid-template-columns: 1fr; gap: 30px; }
  .footer-bottom { flex-direction: column; gap: 6px; text-align: center; }
}

/* roulang page: category3 */
/* ===== 设计变量 ===== */
        :root {
            --color-primary: #13504F;
            --color-primary-dark: #0E3E3D;
            --color-primary-deep: #0B2D2C;
            --color-accent: #E8613C;
            --color-accent-dark: #D04B2A;
            --color-gold: #E5A83D;
            --color-bg: #F7F4EE;
            --color-card: #FFFFFF;
            --color-text-title: #1A1F1E;
            --color-text-body: #3D4543;
            --color-text-muted: #6E7875;
            --color-border: #DDE3E0;
            --color-success: #2F9E74;
            --color-error: #C6453A;
            --radius-card: 12px;
            --radius-btn: 8px;
            --shadow-default: 0 2px 8px rgba(19,80,79,0.06);
            --shadow-hover: 0 10px 28px rgba(19,80,79,0.12);
            --transition: 0.3s ease;
        }

        /* ===== 基础 reset ===== */
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            background: var(--color-bg);
            color: var(--color-text-body);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul,
        ol {
            list-style: none;
        }
        button,
        input,
        select,
        textarea {
            font-family: inherit;
        }
        :focus-visible {
            outline: 3px solid rgba(19, 80, 79, 0.3);
            outline-offset: 2px;
        }

        /* ===== 通用布局 ===== */
        .grid-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .section-pad {
            padding: 80px 0;
        }

        /* ===== 按钮体系 ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 24px;
            border: none;
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            cursor: pointer;
            transition: all var(--transition);
            text-align: center;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-primary:focus {
            box-shadow: 0 0 0 3px rgba(19, 80, 79, 0.18);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: var(--color-accent-dark);
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            border: 1px solid var(--color-primary);
            color: var(--color-primary);
        }
        .btn-outline:hover {
            background: rgba(19, 80, 79, 0.08);
            transform: translateY(-1px);
        }
        .btn-outline-light {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.7);
            color: #fff;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
        }
        .btn-sm {
            padding: 7px 18px;
            font-size: 13px;
        }
        .btn-lg {
            padding: 14px 34px;
            font-size: 16px;
        }
        .btn-block {
            width: 100%;
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid transparent;
            transition: all var(--transition);
        }
        .site-header.is-scrolled {
            border-bottom-color: var(--color-border);
            box-shadow: 0 2px 12px rgba(19, 80, 79, 0.05);
        }
        .site-nav {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 32px;
            height: 68px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        .nav-brand {
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 1px;
            color: var(--color-primary);
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .nav-brand .brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
        }
        .nav-list {
            display: flex;
            align-items: center;
            gap: 32px;
            margin: 0;
            padding: 0;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            position: relative;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-body);
            padding: 8px 2px;
            transition: color var(--transition), transform var(--transition);
        }
        .nav-link::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 0;
            width: 0;
            height: 2px;
            background: var(--color-primary);
            transition: width var(--transition);
        }
        .nav-link:hover {
            color: var(--color-primary);
        }
        .nav-link:hover::after {
            width: 100%;
        }
        .nav-link.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .nav-link.is-active::after {
            width: 100%;
        }
        .nav-link.is-active::before {
            content: "";
            position: absolute;
            left: calc(50% - 3px);
            bottom: -4px;
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--color-primary);
        }
        .nav-side {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-shrink: 0;
        }
        .nav-login {
            font-size: 14px;
            font-weight: 500;
            color: var(--color-text-body);
            transition: color var(--transition);
        }
        .nav-login:hover {
            color: var(--color-primary);
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
        }
        .menu-toggle span {
            width: 22px;
            height: 2px;
            background: var(--color-primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-top: 1px solid var(--color-border);
            padding: 16px 24px 24px;
            flex-direction: column;
            gap: 4px;
        }
        .mobile-menu.is-open {
            display: flex;
        }
        .mobile-link {
            display: block;
            padding: 12px 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--color-text-body);
            border-bottom: 1px solid #F0F3F1;
        }
        .mobile-link:last-child {
            border-bottom: none;
        }
        .mobile-link.is-active {
            color: var(--color-primary);
            font-weight: 600;
        }
        .mobile-actions {
            display: flex;
            gap: 12px;
            margin-top: 16px;
        }
        .mobile-actions .btn {
            flex: 1;
        }
        .mobile-login {
            display: flex;
            align-items: center;
            justify-content: center;
            flex: 1;
            padding: 10px 24px;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-btn);
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
        }

        /* ===== 面包屑 ===== */
        .breadcrumb-wrap {
            background: var(--color-bg);
            border-bottom: 1px solid var(--color-border);
            padding: 14px 0;
        }
        .breadcrumb {
            font-size: 14px;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--color-primary);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            text-decoration: underline;
        }
        .breadcrumb .sep {
            color: #B4BEBB;
            font-size: 12px;
        }
        .breadcrumb .current {
            color: var(--color-text-title);
            font-weight: 500;
        }

        /* ===== 分类 Hero ===== */
        .category-hero {
            position: relative;
            min-height: 220px;
            background:
                linear-gradient(90deg, rgba(11, 45, 44, 0.94) 0%, rgba(11, 45, 44, 0.68) 50%, rgba(11, 45, 44, 0.32) 100%),
                url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
            display: flex;
            align-items: center;
            padding: 56px 0;
            overflow: hidden;
            color: #fff;
        }
        .category-hero .hero-inner {
            position: relative;
            z-index: 2;
        }
        .category-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 10px;
            line-height: 1.25;
            letter-spacing: 1px;
        }
        .category-hero .hero-sub {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.82);
            max-width: 520px;
            line-height: 1.7;
        }
        .category-hero .hero-num {
            position: absolute;
            right: 64px;
            top: 16px;
            font-size: 128px;
            font-weight: 700;
            line-height: 1;
            color: rgba(229, 168, 61, 0.28);
            font-variant-numeric: tabular-nums;
            z-index: 1;
            pointer-events: none;
            letter-spacing: -4px;
        }

        /* ===== 板块通用标题 ===== */
        .section-head {
            margin-bottom: 40px;
        }
        .section-head .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-primary);
            background: #E0EDEB;
            border-radius: 999px;
            padding: 3px 14px;
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            color: var(--color-text-title);
            line-height: 1.3;
            margin-bottom: 10px;
        }
        .section-head p {
            font-size: 15px;
            color: var(--color-text-muted);
            max-width: 640px;
            line-height: 1.7;
        }
        .section-head.center {
            text-align: center;
        }
        .section-head.center p {
            margin-left: auto;
            margin-right: auto;
        }

        /* ===== 热门下载表格 ===== */
        .download-section {
            padding: 80px 0 40px;
        }
        .download-toolbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 20px;
        }
        .download-toolbar .toolbar-info {
            font-size: 14px;
            color: var(--color-text-muted);
        }
        .download-toolbar .toolbar-info strong {
            color: var(--color-primary);
            font-weight: 600;
        }
        .download-toolbar .toolbar-update {
            font-size: 13px;
            color: var(--color-text-muted);
            background: #F0F3F1;
            border-radius: 999px;
            padding: 4px 14px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .download-table-wrap {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
        }
        .download-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 15px;
        }
        .download-table thead {
            background: var(--color-primary);
        }
        .download-table thead th {
            color: #fff;
            font-weight: 500;
            padding: 15px 22px;
            text-align: left;
            font-size: 14px;
            letter-spacing: 0.5px;
        }
        .download-table tbody td {
            padding: 17px 22px;
            border-bottom: 1px solid #EDF1EF;
            color: var(--color-text-body);
            vertical-align: middle;
        }
        .download-table tbody tr:last-child td {
            border-bottom: none;
        }
        .download-table tbody tr {
            transition: background var(--transition);
        }
        .download-table tbody tr:hover {
            background: #F0F5F3;
        }
        .download-table .soft-name {
            display: flex;
            align-items: center;
            gap: 14px;
            font-weight: 600;
            color: var(--color-text-title);
        }
        .download-table .soft-icon {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: #E0EDEB;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            flex-shrink: 0;
        }
        .version-tag {
            display: inline-block;
            background: #E0EDEB;
            color: var(--color-primary);
            font-size: 13px;
            padding: 3px 12px;
            border-radius: 999px;
            font-variant-numeric: tabular-nums;
            font-weight: 500;
        }
        .size-text {
            font-variant-numeric: tabular-nums;
            color: var(--color-text-muted);
            font-size: 14px;
        }
        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 20px;
            border: 1px solid var(--color-primary);
            border-radius: var(--radius-btn);
            color: var(--color-primary);
            font-size: 14px;
            font-weight: 500;
            background: transparent;
            cursor: pointer;
            transition: all var(--transition);
        }
        .btn-download:hover {
            background: rgba(19, 80, 79, 0.08);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(19, 80, 79, 0.1);
        }
        .btn-download svg {
            width: 15px;
            height: 15px;
        }

        /* ===== 下载流程 ===== */
        .steps-section {
            padding: 60px 0 80px;
        }
        .steps-grid {
            position: relative;
            margin-top: 20px;
        }
        .steps-grid::before {
            content: "";
            position: absolute;
            top: 38px;
            left: 10%;
            right: 10%;
            height: 1px;
            background: var(--color-border);
            z-index: 0;
        }
        .step-item {
            position: relative;
            z-index: 1;
            text-align: center;
            padding: 0 10px;
        }
        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: #fff;
            border: 2px solid var(--color-primary);
            color: var(--color-primary);
            font-size: 17px;
            font-weight: 700;
            font-variant-numeric: tabular-nums;
            margin-bottom: 18px;
            transition: all var(--transition);
        }
        .step-item:hover .step-num {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.06);
        }
        .step-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--color-text-title);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 220px;
            margin: 0 auto;
        }

        /* ===== 安全下载 ===== */
        .safe-section {
            padding: 80px 0;
            background: #EDF1EF;
        }
        .safe-grid {
            display: flex;
            align-items: center;
            gap: 60px;
            flex-wrap: wrap;
        }
        .safe-media {
            flex: 1 1 46%;
            min-width: 300px;
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-default);
        }
        .safe-media img {
            width: 100%;
            height: 340px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .safe-media:hover img {
            transform: scale(1.03);
        }
        .safe-content {
            flex: 1 1 44%;
            min-width: 300px;
        }
        .safe-content .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--color-accent);
            background: rgba(232, 97, 60, 0.1);
            border-radius: 999px;
            padding: 3px 14px;
            margin-bottom: 12px;
        }
        .safe-content h2 {
            font-size: 30px;
            font-weight: 700;
            color: var(--color-text-title);
            line-height: 1.3;
            margin-bottom: 14px;
        }
        .safe-content .lead {
            font-size: 15px;
            color: var(--color-text-body);
            line-height: 1.75;
            margin-bottom: 24px;
        }
        .safe-list {
            display: grid;
            gap: 16px;
        }
        .safe-list li {
            display: flex;
            gap: 12px;
            align-items: flex-start;
            font-size: 15px;
            color: var(--color-text-body);
            line-height: 1.6;
        }
        .safe-list li::before {
            content: "";
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--color-primary);
            flex-shrink: 0;
            margin-top: 10px;
        }
        .safe-list strong {
            color: var(--color-text-title);
            font-weight: 600;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: 80px 0;
        }
        .faq-wrap {
            max-width: 860px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-card);
            margin-bottom: 14px;
            overflow: hidden;
            transition: box-shadow var(--transition), border-color var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-default);
        }
        .faq-item.is-open {
            border-left: 4px solid var(--color-accent);
            box-shadow: var(--shadow-hover);
        }
        .faq-question {
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 20px 24px;
            background: none;
            border: none;
            cursor: pointer;
            text-align: left;
            font-size: 15px;
            font-weight: 600;
            color: var(--color-text-title);
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--color-primary);
        }
        .faq-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            border: 1.5px solid var(--color-primary);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 400;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .faq-item.is-open .faq-icon {
            background: var(--color-primary);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--color-text-muted);
            line-height: 1.8;
            border-top: 1px solid #F0F3F1;
            margin-top: 0;
            padding-top: 16px;
        }

        /* ===== 底部 CTA ===== */
        .cat-cta {
            padding: 60px 0;
            background: #F0E8DC;
            border-top: 1px solid var(--color-border);
        }
        .cat-cta .cta-box {
            text-align: center;
        }
        .cat-cta .cta-box p {
            font-size: 17px;
            color: var(--color-text-title);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }
        .cta-actions {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
        }
        .link-arrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 500;
            color: var(--color-primary);
            border-bottom: 1px solid transparent;
            transition: border-color var(--transition), color var(--transition);
        }
        .link-arrow:hover {
            color: var(--color-primary-dark);
            border-bottom-color: var(--color-primary);
        }
        .link-arrow svg {
            width: 15px;
            height: 15px;
        }

        /* ===== 页脚 ===== */
        .site-footer {
            background: var(--color-primary-deep);
            color: #B8C9C7;
            padding: 64px 0 0;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 48px;
        }
        .footer-brand-title {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--color-accent);
            display: inline-block;
        }
        .footer-brand p {
            color: #B8C9C7;
            line-height: 1.8;
            max-width: 260px;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: #B8C9C7;
            transition: color var(--transition), padding-left var(--transition);
        }
        .footer-links a:hover {
            color: #fff;
            padding-left: 4px;
        }
        .footer-contact p {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #B8C9C7;
            margin-bottom: 12px;
            line-height: 1.6;
        }
        .footer-contact svg {
            width: 16px;
            height: 16px;
            color: var(--color-gold);
            flex-shrink: 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 22px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 13px;
            color: rgba(184, 201, 199, 0.6);
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
            .steps-grid::before {
                display: none;
            }
            .step-item {
                margin-bottom: 32px;
            }
        }

        @media (max-width: 768px) {
            .section-pad {
                padding: 56px 0;
            }
            .site-nav {
                padding: 0 20px;
                height: 62px;
            }
            .nav-list {
                display: none;
            }
            .nav-side .nav-login {
                display: none;
            }
            .nav-side .btn-primary {
                display: none;
            }
            .menu-toggle {
                display: flex;
            }
            .mobile-menu.is-open {
                display: flex;
            }
            .category-hero {
                min-height: 190px;
                padding: 40px 0;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero .hero-sub {
                font-size: 14px;
            }
            .category-hero .hero-num {
                font-size: 80px;
                right: 20px;
                top: 10px;
            }
            .download-section,
            .steps-section,
            .safe-section,
            .faq-section {
                padding: 56px 0;
            }
            .section-head h2 {
                font-size: 26px;
            }
            .safe-grid {
                gap: 32px;
            }
            .safe-media img {
                height: 240px;
            }
            .download-table thead {
                display: none;
            }
            .download-table,
            .download-table tbody,
            .download-table td {
                display: block;
                width: 100%;
            }
            .download-table tbody td {
                padding: 12px 18px;
                border-bottom: 1px solid #EDF1EF;
            }
            .download-table tbody tr {
                display: block;
                padding: 8px 0;
                border-bottom: 1px solid var(--color-border);
            }
            .download-table tbody tr:last-child {
                border-bottom: none;
            }
            .download-table td::before {
                content: attr(data-label);
                display: block;
                font-size: 12px;
                color: var(--color-text-muted);
                margin-bottom: 4px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
                padding-bottom: 32px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .grid-container {
                padding: 0 16px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-hero .hero-sub {
                font-size: 13px;
            }
            .category-hero .hero-num {
                display: none;
            }
            .download-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                flex-direction: column;
                gap: 14px;
            }
        }