/* roulang page: index */
:root {
            --primary: #1F6FEB;
            --primary-hover: #1A56D4;
            --secondary: #E8F1FD;
            --accent: #F59E0B;
            --text: #0F172A;
            --text-secondary: #64748B;
            --text-muted: #94A3B8;
            --border: #E2E8F0;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --footer-bg: #0B1220;
            --footer-text: #CBD5E1;
            --radius-card: 1rem;
            --radius-btn: .5rem;
            --shadow-card: 0 4px 16px rgba(2, 12, 27, .06);
            --shadow-card-hover: 0 12px 32px rgba(2, 12, 27, .10)
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box
        }
        html {
            scroll-behavior: smooth
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased
        }
        img {
            max-width: 100%;
            display: block
        }
        a {
            text-decoration: none;
            color: inherit
        }
        ul,
        ol {
            list-style: none
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            transition: all .25s ease;
            cursor: pointer;
            border: none
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(31, 111, 235, .18)
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(31, 111, 235, .25)
        }
        .btn-primary:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(31, 111, 235, .25)
        }
        .btn-outline {
            background: transparent;
            color: var(--text);
            border: 1.5px solid #CBD5E1
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: rgba(31, 111, 235, .04)
        }
        .btn-outline:focus-visible {
            outline: none;
            box-shadow: 0 0 0 4px rgba(31, 111, 235, .2)
        }
        .nav-chips {
            background: #F1F5F9;
            border-radius: 9999px;
            padding: 4px;
            display: inline-flex;
            align-items: center;
            gap: 2px
        }
        .nav-chips .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 500;
            color: #475569;
            transition: all .2s ease;
            white-space: nowrap;
            cursor: pointer
        }
        .nav-chips .chip:hover {
            background: var(--secondary);
            color: var(--primary)
        }
        .nav-chips .chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            box-shadow: 0 2px 8px rgba(31, 111, 235, .3)
        }
        .mobile-chip {
            display: block;
            padding: 14px 20px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 500;
            color: #334155;
            background: #F1F5F9;
            text-align: center;
            transition: all .2s ease
        }
        .mobile-chip:hover {
            background: var(--secondary);
            color: var(--primary)
        }
        .mobile-chip.active {
            background: var(--primary);
            color: #fff;
            font-weight: 600
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px
        }
        .section-head h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.3;
            letter-spacing: -0.01em;
            color: var(--text)
        }
        .section-head p {
            margin-top: 14px;
            color: var(--text-secondary);
            font-size: 16px;
            line-height: 1.7
        }
        .section-head .accent-line {
            width: 32px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
            margin: 16px auto 0
        }
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-card);
            transition: all .3s ease
        }
        .service-card {
            padding: 8px 28px
        }
        .service-row {
            display: flex;
            gap: 24px;
            padding: 28px 0;
            align-items: flex-start
        }
        .service-num {
            font-size: 36px;
            font-weight: 800;
            color: var(--primary);
            line-height: 1;
            font-variant-numeric: tabular-nums;
            min-width: 64px
        }
        .service-body h3 {
            font-size: 20px;
            font-weight: 700;
            line-height: 1.4
        }
        .service-body p {
            margin-top: 8px;
            color: var(--text-secondary);
            font-size: 15px
        }
        .service-link {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-top: 14px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            transition: gap .2s ease
        }
        .service-link:hover {
            gap: 10px;
            color: var(--primary-hover)
        }
        .divider {
            height: 1px;
            background: var(--border)
        }
        .stat {
            text-align: center;
            padding: 20px 8px
        }
        .stat-num {
            font-size: 48px;
            font-weight: 800;
            color: var(--primary);
            font-variant-numeric: tabular-nums;
            line-height: 1.1;
            letter-spacing: -0.02em
        }
        .stat-line {
            width: 16px;
            height: 3px;
            background: var(--primary);
            border-radius: 999px;
            margin: 14px auto
        }
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            font-weight: 500
        }
        .cases-wrap {
            overflow-x: auto;
            padding: 8px 20px 20px;
            scrollbar-width: thin;
            scrollbar-color: #CBD5E1 transparent
        }
        .cases-wrap::-webkit-scrollbar {
            height: 6px
        }
        .cases-wrap::-webkit-scrollbar-track {
            background: transparent
        }
        .cases-wrap::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 999px
        }
        .cases-track {
            display: flex;
            gap: 24px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 0 8px
        }
        .case-card {
            flex-shrink: 0;
            width: 340px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow-card);
            transition: all .25s ease;
            scroll-snap-align: start
        }
        .case-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: #BFDBFE
        }
        .case-img-wrap {
            position: relative;
            overflow: hidden
        }
        .case-img-wrap img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            transition: transform .4s ease
        }
        .case-card:hover .case-img-wrap img {
            transform: scale(1.04)
        }
        .badge-float {
            position: absolute;
            top: 12px;
            left: 12px;
            background: #fff;
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, .1)
        }
        .case-body {
            padding: 20px
        }
        .case-body h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text)
        }
        .case-body p {
            margin-top: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden
        }
        .case-meta {
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid #F1F5F9;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-muted)
        }
        .case-meta .arrow {
            color: var(--primary);
            font-weight: 700;
            font-size: 18px;
            transition: transform .2s ease
        }
        .case-card:hover .case-meta .arrow {
            transform: translateX(4px)
        }
        .solution-card {
            padding: 36px 32px;
            border: 1px solid #D2E3FB;
            border-radius: var(--radius-card);
            background: #fff;
            box-shadow: var(--shadow-card);
            transition: all .3s ease
        }
        .solution-card:hover {
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-2px)
        }
        .solution-card h3 {
            font-size: 22px;
            font-weight: 700;
            color: var(--text)
        }
        .solution-card .solution-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--secondary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            margin-bottom: 16px
        }
        .solution-list {
            margin-top: 20px
        }
        .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 9px 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.6
        }
        .solution-list li i {
            color: var(--primary);
            margin-top: 5px;
            font-size: 16px
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            margin-bottom: 12px;
            overflow: hidden;
            transition: box-shadow .2s ease
        }
        .faq-item[open] {
            box-shadow: var(--shadow-card);
            border-color: #BFDBFE
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            cursor: pointer;
            list-style: none;
            transition: background .2s ease
        }
        .faq-item summary:hover {
            background: #F8FAFC
        }
        .faq-item summary::-webkit-details-marker {
            display: none
        }
        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 999px;
            background: var(--secondary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            transition: transform .2s ease
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg)
        }
        .faq-answer {
            padding: 14px 20px 18px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
            background: var(--bg);
            border-top: 1px dashed var(--border)
        }
        .form-card {
            padding: 36px
        }
        .form-card h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 8px
        }
        .form-card p {
            color: var(--text-secondary);
            font-size: 14px;
            margin-bottom: 24px
        }
        .form-group {
            margin-bottom: 16px
        }
        .form-input {
            width: 100%;
            border: 1px solid #CBD5E1;
            border-radius: 8px;
            padding: 12px 16px;
            font-size: 15px;
            color: var(--text);
            background: #fff;
            transition: all .2s ease;
            font-family: inherit
        }
        .form-input:focus {
            outline: none;
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(31, 111, 235, .12)
        }
        .form-input::placeholder {
            color: var(--text-muted)
        }
        textarea.form-input {
            min-height: 120px;
            resize: vertical
        }
        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 20px 0;
            border-bottom: 1px solid var(--border)
        }
        .contact-item:last-child {
            border-bottom: none
        }
        .contact-item .contact-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--secondary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px
        }
        .contact-item strong {
            display: block;
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-top: 2px
        }
        .contact-item span {
            font-size: 13px;
            color: var(--text-muted)
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 960px;
            margin: 0 auto
        }
        .news-row {
            display: flex;
            align-items: center;
            gap: 20px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            padding: 18px 24px;
            transition: all .25s ease
        }
        .news-row:hover {
            transform: translateX(4px);
            box-shadow: var(--shadow-card);
            border-color: #BFDBFE
        }
        .badge {
            flex-shrink: 0;
            background: var(--secondary);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: 999px;
            white-space: nowrap
        }
        .news-title {
            flex-shrink: 0;
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
            min-width: 200px;
            line-height: 1.4
        }
        .news-summary {
            flex: 1;
            color: var(--text-secondary);
            font-size: 14px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            line-height: 1.6
        }
        .news-time {
            flex-shrink: 0;
            font-size: 13px;
            color: var(--text-muted);
            white-space: nowrap
        }
        .news-arrow {
            flex-shrink: 0;
            color: var(--primary);
            font-size: 18px;
            font-weight: 700;
            transition: transform .2s ease
        }
        .news-row:hover .news-arrow {
            transform: translateX(4px)
        }
        .empty-state {
            background: #F1F5F9;
            border: 1px dashed var(--border);
            border-radius: 16px;
            padding: 56px 24px;
            text-align: center;
            color: var(--text-muted)
        }
        .empty-state i {
            font-size: 40px;
            margin-bottom: 14px;
            display: block;
            color: #CBD5E1
        }
        .empty-state p {
            font-size: 15px;
            font-weight: 500
        }
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text)
        }
        .site-footer a {
            color: var(--footer-text);
            transition: color .2s ease
        }
        .site-footer a:hover {
            color: #fff
        }
        .footer-brand {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            display: flex;
            align-items: center;
            gap: 8px
        }
        .footer-brand .footer-badge {
            font-size: 11px;
            background: rgba(255, 255, 255, .12);
            color: #93C5FD;
            border-radius: 999px;
            padding: 3px 10px;
            font-weight: 500
        }
        .footer-heading {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 18px
        }
        .footer-list li {
            margin-bottom: 12px;
            font-size: 14px
        }
        .footer-list li i {
            margin-right: 8px;
            font-size: 13px;
            color: #64748B
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .08);
            padding: 24px 0;
            text-align: center;
            font-size: 13px;
            color: #64748B
        }
        .hero {
            background: #F0F5FC;
            position: relative;
            overflow: hidden
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 46%;
            height: 78%;
            background-image: url('/assets/images/backpic/back-1.webp');
            background-size: cover;
            background-position: center;
            opacity: .22;
            border-radius: 0 0 0 48px
        }
        .hero::after {
            content: '';
            position: absolute;
            bottom: -80px;
            left: -80px;
            width: 260px;
            height: 260px;
            border-radius: 50%;
            background: #D2E3FB;
            opacity: .35
        }
        .hero .container {
            position: relative;
            z-index: 2
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: #fff;
            border: 1px solid #D2E3FB;
            border-radius: 999px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(0, 0, 0, .04)
        }
        .hero-badge .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent)
        }
        .hero-intro {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 24px
        }
        .hero-intro span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary)
        }
        .hero-intro i {
            color: var(--primary);
            font-size: 15px
        }
        .cta-band {
            background: var(--primary);
            border-radius: 24px;
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden
        }
        .cta-band h2 {
            color: #fff;
            font-size: 28px;
            font-weight: 700
        }
        .cta-band p {
            color: rgba(255, 255, 255, .85);
            margin-top: 12px;
            font-size: 16px
        }
        .cta-band .cta-btns {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-top: 28px;
            flex-wrap: wrap
        }
        .cta-band .btn-white {
            background: #fff;
            color: var(--primary);
            font-weight: 600
        }
        .cta-band .btn-white:hover {
            background: #E8F1FD;
            transform: translateY(-2px)
        }
        .cta-band .btn-ghost {
            background: transparent;
            color: #fff;
            border: 1.5px solid rgba(255, 255, 255, .6)
        }
        .cta-band .btn-ghost:hover {
            border-color: #fff;
            background: rgba(255, 255, 255, .1)
        }
        @media(max-width:1023px) {
            .hero::before {
                width: 100%;
                height: 40%;
                border-radius: 0 0 0 0;
                opacity: .15
            }
            .case-card {
                width: 300px
            }
            .news-row {
                flex-wrap: wrap;
                gap: 8px 12px
            }
            .news-title {
                min-width: 0;
                flex-basis: calc(100% - 100px)
            }
            .news-summary {
                flex-basis: 100%;
                white-space: normal;
                display: -webkit-box;
                -webkit-line-clamp: 2;
                -webkit-box-orient: vertical;
                overflow: hidden
            }
            .news-time {
                margin-left: auto
            }
        }
        @media(max-width:767px) {
            .section-head h2 {
                font-size: 26px
            }
            .stat-num {
                font-size: 36px
            }
            .service-num {
                font-size: 30px;
                min-width: 48px
            }
            .service-row {
                gap: 16px
            }
            .service-card {
                padding: 4px 20px
            }
            .form-card {
                padding: 24px
            }
            .cta-band {
                padding: 36px 24px
            }
            .cta-band h2 {
                font-size: 22px
            }
            .case-card {
                width: 280px
            }
        }
        @media(max-width:520px) {
            .news-row {
                flex-direction: column;
                align-items: flex-start;
                padding: 16px
            }
            .news-title {
                flex-basis: auto;
                width: 100%
            }
            .news-summary {
                width: 100%
            }
            .news-time {
                margin-left: 0
            }
            .news-arrow {
                display: none
            }
            .badge {
                font-size: 12px;
                padding: 3px 10px
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1F6FEB;
            --primary-hover: #1A56D4;
            --secondary: #E8F1FD;
            --accent: #F59E0B;
            --text-main: #0F172A;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --bg: #F8FAFC;
            --card: #FFFFFF;
            --footer-bg: #0B1220;
            --footer-text: #CBD5E1;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --shadow: 0 4px 16px rgba(2, 12, 27, 0.06);
            --shadow-hover: 0 12px 32px rgba(2, 12, 27, 0.10);
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            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", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        button {
            font-family: inherit;
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            background: #F1F5F9;
            color: var(--text-main);
            font-size: 14px;
            font-weight: 500;
            transition: all var(--transition);
            border: 1px solid transparent;
            white-space: nowrap;
        }
        .chip:hover {
            background: var(--secondary);
            color: var(--primary);
        }
        .chip.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-chip {
            display: block;
            padding: 12px 16px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 500;
            text-align: center;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text-main);
            transition: all var(--transition);
        }
        .mobile-chip.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            border: 1px solid transparent;
            line-height: 1.4;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(31, 111, 235, 0.25);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(31, 111, 235, 0.30);
        }
        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(31, 111, 235, 0.20);
        }
        .btn-outline {
            background: transparent;
            border-color: var(--border);
            color: var(--text-main);
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
        }
        .category-hero {
            position: relative;
            background: linear-gradient(135deg, #EEF4FC 0%, #F8FAFC 100%);
            padding: 72px 0;
            border-bottom: 1px solid var(--border);
        }
        .category-hero::before {
            content: "";
            position: absolute;
            right: -80px;
            top: -80px;
            width: 280px;
            height: 280px;
            background: var(--secondary);
            border-radius: 40px;
            transform: rotate(8deg);
        }
        .hero-inner {
            display: flex;
            gap: 32px;
            position: relative;
            z-index: 1;
        }
        .hero-line {
            width: 4px;
            background: var(--primary);
            border-radius: 2px;
            flex-shrink: 0;
            margin-top: 8px;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--text-light);
            margin-bottom: 16px;
            display: flex;
            gap: 6px;
            align-items: center;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .category-hero h1 {
            font-size: 40px;
            line-height: 1.2;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }
        .category-hero .hero-desc {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.75;
            max-width: 640px;
        }
        .hero-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 28px;
        }
        .hero-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-main);
            background: #fff;
            padding: 8px 14px;
            border-radius: 999px;
            box-shadow: var(--shadow);
            font-weight: 500;
        }
        .hero-meta i {
            color: var(--primary);
        }
        .section {
            padding: 72px 0;
        }
        .section-alt {
            background: #fff;
        }
        .section-head {
            text-align: center;
            max-width: 680px;
            margin: 0 auto 48px;
        }
        .section-tag {
            display: inline-block;
            background: var(--secondary);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }
        .section-head h2 {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.75;
        }
        .coverage-card {
            background: var(--card);
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .coverage-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(31, 111, 235, 0.30);
        }
        .card-img {
            position: relative;
            overflow: hidden;
        }
        .card-img img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-radius: 0;
        }
        .card-img .badge {
            position: absolute;
            top: 12px;
            left: 12px;
            margin: 0;
            background: rgba(255, 255, 255, 0.92);
            color: var(--primary);
            box-shadow: 0 2px 8px rgba(2, 12, 27, 0.08);
            backdrop-filter: none;
        }
        .badge {
            display: inline-flex;
            align-items: center;
            align-self: flex-start;
            background: var(--secondary);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .coverage-card .card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .coverage-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: 10px;
            line-height: 1.4;
        }
        .coverage-card .card-desc {
            color: var(--text-muted);
            font-size: 14px;
            line-height: 1.7;
            flex: 1;
        }
        .card-link {
            margin-top: 16px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            transition: color 0.2s;
        }
        .card-link i {
            transition: transform 0.2s;
        }
        .card-link:hover {
            color: var(--primary-hover);
        }
        .card-link:hover i {
            transform: translateX(4px);
        }
        .features-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }
        .features-visual {
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
            border: 1px solid var(--border);
        }
        .features-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            min-height: 360px;
        }
        .features-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .feature-item {
            display: flex;
            gap: 16px;
            padding: 20px;
            background: #fff;
            border-radius: 12px;
            border: 1px solid var(--border);
            transition: all var(--transition);
            align-items: flex-start;
        }
        .feature-item:hover {
            border-color: rgba(31, 111, 235, 0.30);
            box-shadow: var(--shadow-hover);
        }
        .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }
        .feature-item h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .feature-item p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .audience-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .audience-card {
            background: #fff;
            border-radius: 16px;
            padding: 28px 24px;
            text-align: center;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all var(--transition);
        }
        .audience-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(31, 111, 235, 0.30);
        }
        .audience-card .icon {
            width: 56px;
            height: 56px;
            margin: 0 auto 16px;
            border-radius: 50%;
            background: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
        }
        .audience-card h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .audience-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .faq-wrap {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: rgba(31, 111, 235, 0.30);
        }
        .faq-item summary {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 600;
            font-size: 16px;
            list-style: none;
            line-height: 1.5;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--secondary);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: transform 0.25s;
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 24px 22px;
            color: var(--text-muted);
            font-size: 15px;
            line-height: 1.75;
        }
        .cta-banner {
            background: var(--secondary);
            padding: 64px 0;
            text-align: center;
        }
        .cta-banner h2 {
            font-size: 30px;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }
        .cta-banner p {
            color: var(--text-muted);
            font-size: 16px;
            margin-bottom: 32px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.75;
        }
        .cta-banner .btn {
            margin: 0 8px;
        }
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
        }
        .site-footer .container {
            max-width: 1200px;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 8px;
            line-height: 1.4;
        }
        .footer-badge {
            font-size: 11px;
            background: rgba(31, 111, 235, 0.3);
            color: #93C5FD;
            padding: 2px 8px;
            border-radius: 999px;
            font-weight: 600;
            white-space: nowrap;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-list li {
            margin-bottom: 10px;
            font-size: 14px;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .footer-list a {
            color: var(--footer-text);
            transition: color 0.2s;
        }
        .footer-list a:hover {
            color: #fff;
        }
        .footer-list i {
            width: 18px;
            color: #64748B;
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            color: #64748B;
            text-align: center;
        }
        .footer-bottom p {
            margin: 0;
        }
        @media (max-width: 1024px) {
            .features-wrap {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .features-visual img {
                min-height: 280px;
            }
            .audience-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: 48px 0;
            }
            .section-head h2 {
                font-size: 24px;
            }
            .section-head p {
                font-size: 15px;
            }
            .hero-inner {
                flex-direction: column;
                gap: 16px;
            }
            .hero-line {
                width: 48px;
                height: 4px;
                margin-top: 0;
            }
            .category-hero {
                padding: 48px 0;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .category-hero .hero-desc {
                font-size: 15px;
            }
            .hero-meta {
                gap: 10px;
            }
            .hero-meta span {
                font-size: 13px;
                padding: 6px 12px;
            }
            .cta-banner {
                padding: 48px 0;
            }
            .cta-banner h2 {
                font-size: 24px;
            }
        }
        @media (max-width: 520px) {
            .audience-grid {
                grid-template-columns: 1fr;
            }
            .cta-banner .btn {
                display: block;
                width: 100%;
                margin-bottom: 12px;
            }
            .cta-banner .btn:last-child {
                margin-bottom: 0;
            }
            .coverage-card .card-body {
                padding: 20px;
            }
            .faq-item summary {
                padding: 16px 18px;
                font-size: 15px;
            }
            .faq-item .faq-answer {
                padding: 0 18px 16px;
                font-size: 14px;
            }
        }

/* roulang page: article */
:root {
  --primary: #1F6FEB;
  --primary-hover: #1A56D4;
  --secondary: #E8F1FD;
  --accent: #F59E0B;
  --text-strong: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-faint: #94A3B8;
  --border: #E2E8F0;
  --bg-page: #F8FAFC;
  --bg-card: #FFFFFF;
  --footer-bg: #0B1220;
  --footer-text: #CBD5E1;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --shadow-card: 0 4px 16px rgba(2, 12, 27, 0.06);
  --shadow-hover: 0 12px 32px rgba(2, 12, 27, 0.10);
  --container-max: 1200px;
  --transition: all 0.2s ease;
}
* { 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", "Helvetica Neue", Arial, sans-serif;
  background: var(--bg-page);
  color: var(--text-body);
  line-height: 1.75;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font-family: inherit; }
.container { max-width: var(--container-max); margin: 0 auto; padding: 0 20px; }

.nav-chips { gap: 8px; }
.chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 20px;
  border-radius: 9999px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #334155;
  background: #F1F5F9;
  border: 1px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}
.chip:hover { background: var(--secondary); color: var(--primary); }
.chip.active { background: var(--primary); color: #fff; box-shadow: 0 4px 14px rgba(31, 111, 235, 0.25); }

.mobile-chip {
  display: block;
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-lg);
  background: var(--bg-page);
  border: 1px solid var(--border);
  font-weight: 600;
  color: var(--text-strong);
  text-align: left;
  transition: var(--transition);
  font-size: 1rem;
}
.mobile-chip:hover { background: var(--secondary); color: var(--primary); }
.mobile-chip.active { background: var(--primary); color: #fff; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1rem;
  line-height: 1;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}
.btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(31, 111, 235, 0.22); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 10px 24px rgba(31, 111, 235, 0.28); }
.btn-primary:focus-visible, .btn-outline:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--secondary); }
.btn-outline { background: transparent; color: var(--text-strong); border-color: var(--border); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }

.breadcrumb-area { background: var(--secondary); border-bottom: 1px solid var(--border); }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-size: 0.875rem;
  color: var(--text-faint);
}
.breadcrumb a { color: var(--text-muted); transition: var(--transition); display: inline-flex; align-items: center; gap: 6px; }
.breadcrumb a:hover { color: var(--primary); }
.breadcrumb .current { color: var(--text-strong); font-weight: 600; }

.article-header { padding: 48px 0 32px; }
.article-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--secondary);
  color: var(--primary);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 9999px;
}
.article-title { font-size: 2.25rem; line-height: 1.25; font-weight: 800; color: var(--text-strong); letter-spacing: -0.02em; }
.article-description { font-size: 1.125rem; color: var(--text-muted); max-width: 760px; }
.article-meta { display: flex; flex-wrap: wrap; gap: 16px; color: var(--text-faint); font-size: 0.875rem; }
.article-meta span { display: inline-flex; align-items: center; gap: 6px; }

.article-body-wrap { max-width: 768px; margin: 0 auto; padding: 0 20px; }
.article-body {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-body);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  padding: 48px 48px 56px;
  box-shadow: var(--shadow-card);
}
.article-body h2 { font-size: 1.5rem; font-weight: 700; color: var(--text-strong); margin: 40px 0 16px; padding-top: 8px; }
.article-body h3 { font-size: 1.25rem; font-weight: 700; color: var(--text-strong); margin: 32px 0 12px; }
.article-body p { margin-bottom: 20px; }
.article-body ul, .article-body ol { margin: 0 0 20px; padding-left: 1.4rem; }
.article-body li { margin-bottom: 8px; }
.article-body blockquote { border-left: 4px solid var(--primary); background: var(--secondary); padding: 16px 20px; border-radius: 0 var(--radius-lg) var(--radius-lg) 0; margin: 24px 0; color: var(--text-muted); }
.article-body img { border-radius: var(--radius-xl); margin: 24px 0; }
.article-body a { color: var(--primary); text-decoration: underline; text-underline-offset: 3px; }
.article-body a:hover { color: var(--primary-hover); }
.article-body code { background: #F1F5F9; border: 1px solid var(--border); border-radius: 6px; padding: 2px 8px; font-size: 0.9em; color: var(--primary); }
.article-body pre { background: var(--footer-bg); color: #E2E8F0; padding: 20px; border-radius: var(--radius-lg); overflow-x: auto; margin: 24px 0; }
.article-body pre code { background: transparent; border: none; padding: 0; color: inherit; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-body th, .article-body td { border: 1px solid var(--border); padding: 12px 14px; text-align: left; }
.article-body th { background: var(--secondary); font-weight: 600; }

.not-found { text-align: center; padding: 48px 24px; }
.not-found i { font-size: 3rem; color: var(--text-faint); margin-bottom: 16px; }
.not-found h2 { font-size: 1.5rem; color: var(--text-strong); margin-bottom: 8px; }
.not-found p { color: var(--text-muted); margin-bottom: 24px; }

.article-tags {
  max-width: 768px;
  margin: 32px auto 0;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.article-tag {
  display: inline-block;
  background: var(--secondary);
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 9999px;
}

.post-nav {
  max-width: 768px;
  margin: 32px auto 0;
  padding: 0 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.post-nav-link {
  flex: 1;
  min-width: 220px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-body);
  transition: var(--transition);
}
.post-nav-link:hover { border-color: var(--primary); color: var(--primary); box-shadow: var(--shadow-card); }

.related-section { padding: 64px 0 32px; }
.section-heading { font-size: 1.75rem; font-weight: 800; color: var(--text-strong); margin-bottom: 8px; letter-spacing: -0.01em; }
.section-sub { color: var(--text-muted); margin-bottom: 32px; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.recommend-card {
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-2xl);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.recommend-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.recommend-cover { position: relative; aspect-ratio: 16 / 9; overflow: hidden; }
.recommend-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.recommend-card:hover .recommend-cover img { transform: scale(1.04); }
.card-badge {
  position: absolute;
  top: 12px;
  left: 12px;
  background: #fff;
  color: var(--primary);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: 9999px;
  box-shadow: 0 2px 8px rgba(2, 12, 27, 0.08);
}
.recommend-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.recommend-body h3 { font-size: 1.15rem; line-height: 1.4; font-weight: 700; color: var(--text-strong); margin-bottom: 8px; }
.recommend-body p { font-size: 0.925rem; color: var(--text-muted); flex: 1; margin-bottom: 16px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.recommend-meta { display: flex; justify-content: space-between; align-items: center; font-size: 0.875rem; color: var(--text-faint); }
.recommend-meta .arrow { color: var(--primary); transition: transform 0.2s ease; }
.recommend-card:hover .arrow { transform: translateX(4px); }

.cta-band { background: var(--secondary); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 56px 0; margin-top: 48px; }
.cta-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px; }
.cta-inner h2 { margin-bottom: 8px; }
.cta-inner p { color: var(--text-muted); max-width: 560px; }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.site-footer { background: var(--footer-bg); color: var(--footer-text); }
.footer-brand { font-size: 1.25rem; font-weight: 800; color: #fff; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.footer-badge { background: rgba(255, 255, 255, 0.12); color: #F8FAFC; font-size: 0.75rem; padding: 4px 10px; border-radius: 9999px; font-weight: 600; }
.footer-heading { color: #fff; font-size: 1rem; font-weight: 700; margin-bottom: 16px; }
.footer-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-list li { display: flex; align-items: center; gap: 10px; font-size: 0.925rem; }
.footer-list a { transition: var(--transition); color: var(--footer-text); }
.footer-list a:hover { color: #fff; padding-left: 4px; }
.footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding: 20px 0; font-size: 0.875rem; color: var(--text-faint); }

@media (max-width: 1024px) {
  .related-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .article-title { font-size: 1.75rem; }
  .article-body { padding: 32px 20px; }
  .related-grid { grid-template-columns: 1fr; }
  .cta-inner { flex-direction: column; align-items: flex-start; }
  .cta-actions { width: 100%; }
  .cta-actions .btn { flex: 1; }
}
@media (max-width: 520px) {
  .container { padding: 0 16px; }
  .article-body-wrap { padding: 0 16px; }
  .post-nav { flex-direction: column; }
  .post-nav-link { min-width: 0; }
}

/* roulang page: category2 */
:root {
            --primary: #1F6FEB;
            --primary-hover: #1A56D4;
            --primary-light: #E8F1FD;
            --accent: #F59E0B;
            --text: #0F172A;
            --text-muted: #64748B;
            --text-light: #94A3B8;
            --border: #E2E8F0;
            --bg: #F8FAFC;
            --radius: 20px;
            --shadow: 0 4px 16px rgba(2, 12, 27, 0.06);
            --shadow-hover: 0 12px 32px rgba(2, 12, 27, 0.10);
        }

        * {
            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", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
        }
        img {
            display: block;
            max-width: 100%;
        }
        button {
            cursor: pointer;
            font-family: inherit;
        }
        ul,
        ol {
            list-style: none;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* ===== Header & Nav ===== */
        header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: #fff;
            border-bottom: 1px solid #E2E8F0;
            box-shadow: 0 1px 4px rgba(2, 12, 27, 0.04);
        }
        .nav-chips {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .chip {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 18px;
            border-radius: 9999px;
            font-size: 14px;
            font-weight: 500;
            color: #1E293B;
            background: #F1F5F9;
            border: 1px solid transparent;
            transition: background 0.2s, color 0.2s, box-shadow 0.2s;
            white-space: nowrap;
        }
        .chip:hover {
            background: #E8F1FD;
            color: #1F6FEB;
        }
        .chip.active {
            background: #1F6FEB;
            color: #fff;
            box-shadow: 0 2px 10px rgba(31, 111, 235, 0.3);
        }
        .mobile-chip {
            display: block;
            width: 100%;
            padding: 14px 20px;
            border-radius: 14px;
            font-size: 16px;
            font-weight: 500;
            color: #0F172A;
            background: #F1F5F9;
            border: 1px solid transparent;
            transition: background 0.2s, color 0.2s;
        }
        .mobile-chip.active {
            background: #1F6FEB;
            color: #fff;
        }
        .mobile-chip:hover {
            background: #E8F1FD;
            color: #1F6FEB;
        }

        /* ===== Buttons ===== */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            line-height: 1.2;
            border: 1px solid transparent;
            transition: background 0.25s, color 0.25s, transform 0.25s, box-shadow 0.25s, border-color 0.25s;
            cursor: pointer;
        }
        .btn-primary {
            background: #1F6FEB;
            color: #fff;
            box-shadow: 0 4px 14px rgba(31, 111, 235, 0.25);
        }
        .btn-primary:hover {
            background: #1A56D4;
            transform: translateY(-2px);
            box-shadow: 0 8px 22px rgba(31, 111, 235, 0.30);
        }
        .btn-primary:focus,
        .btn-outline:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(31, 111, 235, 0.20);
        }
        .btn-outline {
            background: #fff;
            color: #1F6FEB;
            border-color: #1F6FEB;
        }
        .btn-outline:hover {
            background: #E8F1FD;
            border-color: #1A56D4;
            color: #1A56D4;
        }

        /* ===== Category Hero ===== */
        .category-hero {
            background: linear-gradient(to bottom, #EFF6FF, #F8FAFC);
            padding: 64px 0 56px;
            border-bottom: 1px solid #E2E8F0;
        }
        .banner-wrap {
            display: flex;
            gap: 24px;
            align-items: stretch;
        }
        .banner-line {
            width: 4px;
            flex-shrink: 0;
            background: #1F6FEB;
            border-radius: 4px;
        }
        .hero-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.12em;
            color: #1F6FEB;
            background: rgba(31, 111, 235, 0.10);
            padding: 4px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .category-hero h1 {
            font-size: 2.75rem;
            font-weight: 700;
            line-height: 1.2;
            color: #0F172A;
            letter-spacing: -0.02em;
            margin-bottom: 14px;
        }
        .category-hero p {
            font-size: 1.05rem;
            color: #64748B;
            max-width: 640px;
            line-height: 1.75;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: #94A3B8;
            margin-bottom: 18px;
        }
        .breadcrumb a {
            color: #64748B;
            transition: color 0.2s;
        }
        .breadcrumb a:hover {
            color: #1F6FEB;
        }
        .breadcrumb .sep {
            color: #CBD5E1;
        }
        .breadcrumb .current {
            color: #0F172A;
            font-weight: 500;
        }

        /* ===== Section ===== */
        .section-block {
            padding: 72px 0;
        }
        .section-head {
            max-width: 640px;
            margin-bottom: 44px;
        }
        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.1em;
            color: #1F6FEB;
            background: #E8F1FD;
            padding: 5px 16px;
            border-radius: 999px;
            margin-bottom: 12px;
        }
        .section-head h2 {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            color: #0F172A;
            margin-bottom: 14px;
        }
        .section-head p {
            font-size: 16px;
            color: #64748B;
            line-height: 1.8;
        }

        /* ===== Service Card Grid ===== */
        .service-card-grid {
            display: grid;
            grid-template-columns: repeat(1, 1fr);
            gap: 28px;
        }
        .service-card {
            background: #fff;
            border-radius: 24px;
            overflow: hidden;
            border: 1px solid #E2E8F0;
            box-shadow: var(--shadow);
            transition: transform 0.3s, box-shadow 0.3s, border-color 0.3s;
            display: flex;
            flex-direction: column;
        }
        .service-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-hover);
            border-color: #BFDBFE;
        }
        .service-card .card-link {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .card-media {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16 / 9;
            background: #F1F5F9;
        }
        .card-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.45s;
        }
        .service-card:hover .card-media img {
            transform: scale(1.04);
        }
        .card-body {
            display: flex;
            flex-direction: column;
            flex: 1;
            padding: 26px 28px 24px;
        }
        .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 14px;
        }
        .card-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: #1F6FEB;
            background: #EFF6FF;
            padding: 5px 14px;
            border-radius: 999px;
        }
        .card-badge::before {
            content: '';
            width: 6px;
            height: 6px;
            background: #1F6FEB;
            border-radius: 50%;
        }
        .card-date {
            font-size: 13px;
            color: #94A3B8;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-title {
            font-size: 1.25rem;
            font-weight: 700;
            line-height: 1.4;
            color: #0F172A;
            margin-bottom: 12px;
            transition: color 0.2s;
        }
        .service-card:hover .card-title {
            color: #1F6FEB;
        }
        .card-desc {
            font-size: 15px;
            color: #64748B;
            line-height: 1.75;
            flex: 1;
            margin-bottom: 20px;
        }
        .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 16px;
            border-top: 1px solid #F1F5F9;
            font-size: 14px;
            font-weight: 500;
            color: #1F6FEB;
        }
        .card-footer i {
            transition: transform 0.2s;
        }
        .service-card:hover .card-footer i {
            transform: translateX(4px);
        }

        /* ===== CTA Band ===== */
        .cta-band {
            background: #E8F1FD;
            border-top: 1px solid #DBEAFE;
            padding: 64px 0;
        }
        .cta-wrap {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 40px;
            flex-wrap: wrap;
            background: #fff;
            border-radius: 24px;
            padding: 40px 44px;
            box-shadow: var(--shadow);
            border: 1px solid #E2E8F0;
        }
        .cta-info {
            flex: 1 1 380px;
        }
        .cta-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: #1F6FEB;
            background: #EFF6FF;
            padding: 6px 14px;
            border-radius: 999px;
            margin-bottom: 14px;
        }
        .cta-info h2 {
            font-size: 1.75rem;
            font-weight: 700;
            line-height: 1.3;
            color: #0F172A;
            margin-bottom: 12px;
        }
        .cta-info p {
            font-size: 15px;
            color: #64748B;
            line-height: 1.75;
            margin-bottom: 18px;
        }
        .cta-meta {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            font-size: 14px;
            color: #475569;
        }
        .cta-meta i {
            color: #1F6FEB;
            margin-right: 6px;
        }
        .cta-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            flex-shrink: 0;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: #0B1220;
            color: #CBD5E1;
        }
        .footer-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: #fff;
        }
        .footer-badge {
            background: rgba(255, 255, 255, 0.12);
            color: #94A3B8;
            font-size: 12px;
            padding: 4px 10px;
            border-radius: 999px;
            font-weight: 500;
        }
        .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            font-size: 14px;
        }
        .footer-list a {
            color: #CBD5E1;
            transition: color 0.2s;
        }
        .footer-list a:hover {
            color: #fff;
        }
        .footer-list i {
            width: 20px;
            color: #1F6FEB;
            margin-right: 6px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            font-size: 13px;
            color: #64748B;
        }

        /* ===== Responsive ===== */
        @media (min-width: 768px) {
            .service-card-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 1024px) {
            .category-hero h1 {
                font-size: 2.25rem;
            }
            .cta-wrap {
                padding: 32px 28px;
            }
        }
        @media (max-width: 640px) {
            .category-hero {
                padding: 48px 0 40px;
            }
            .category-hero h1 {
                font-size: 1.85rem;
            }
            .banner-wrap {
                gap: 14px;
            }
            .card-body {
                padding: 20px;
            }
            .section-head h2 {
                font-size: 1.5rem;
            }
            .cta-wrap {
                padding: 28px 20px;
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-actions {
                width: 100%;
            }
            .cta-actions .btn {
                flex: 1;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1F6FEB;
            --primary-hover: #1A56D4;
            --secondary: #E8F1FD;
            --accent: #F59E0B;
            --text: #0F172A;
            --text-muted: #64748B;
            --text-weak: #94A3B8;
            --border: #E2E8F0;
            --bg: #F8FAFC;
            --card-bg: #FFFFFF;
            --footer-bg: #0B1220;
            --footer-text: #CBD5E1;
            --radius: 16px;
            --radius-lg: 12px;
            --shadow-card: 0 4px 16px rgba(2, 12, 27, 0.06);
            --shadow-hover: 0 12px 32px rgba(2, 12, 27, 0.10);
            --shadow-btn: 0 8px 24px rgba(31, 111, 235, 0.25);
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
            background: var(--bg);
            color: var(--text);
            line-height: 1.75;
            -webkit-font-smoothing: antialiased;
            margin: 0;
        }
        img {
            max-width: 100%;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color .2s ease;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: var(--radius-lg);
            font-weight: 600;
            font-size: 15px;
            line-height: 1.2;
            text-decoration: none;
            transition: all .2s ease;
            gap: 8px;
            border: 1px solid transparent;
            cursor: pointer;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            transform: translateY(-2px);
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(31, 111, 235, 0.2);
        }
        .btn-outline {
            background: #fff;
            color: var(--text);
            border-color: #CBD5E1;
        }
        .btn-outline:hover {
            border-color: var(--primary);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .btn-white {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-white:hover {
            background: #F1F5F9;
            transform: translateY(-2px);
            box-shadow: 0 12px 28px rgba(2, 12, 27, 0.12);
        }

        /* 导航 chips */
        .chip {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 500;
            color: #334155;
            background: #F1F5F9;
            text-decoration: none;
            transition: all .2s;
            white-space: nowrap;
        }
        .chip:hover {
            background: var(--secondary);
            color: var(--primary);
        }
        .chip.active {
            background: var(--primary);
            color: #fff;
        }
        .mobile-chip {
            display: block;
            padding: 14px 20px;
            border-radius: var(--radius-lg);
            font-size: 16px;
            font-weight: 500;
            color: var(--text);
            background: #F8FAFC;
            text-decoration: none;
            text-align: center;
            transition: all .2s;
        }
        .mobile-chip.active {
            background: var(--primary);
            color: #fff;
        }

        /* 卡片 */
        .card {
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: all .25s;
            display: block;
            height: 100%;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            border-color: #BFDBFE;
        }

        /* 徽章 */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--secondary);
            border-radius: 999px;
            padding: 4px 12px;
            line-height: 1.4;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-weak);
        }
        .breadcrumb a {
            color: var(--text-muted);
            transition: color .2s;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            font-size: 11px;
            color: #CBD5E1;
        }

        /* 区块标题 */
        .section-head {
            max-width: 640px;
        }
        .section-head .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--secondary);
            border-radius: 999px;
            padding: 6px 16px;
            letter-spacing: .02em;
        }
        .section-head h2 {
            font-size: 28px;
            line-height: 1.3;
            font-weight: 700;
            color: var(--text);
            margin: 18px 0 10px;
        }
        .section-head p {
            color: var(--text-muted);
            font-size: 16px;
            line-height: 1.75;
            margin: 0;
        }

        /* 页脚 */
        .site-footer {
            background: var(--footer-bg);
            color: var(--footer-text);
        }
        .site-footer .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .site-footer .footer-badge {
            font-size: 11px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.1);
            color: #94A3B8;
            border-radius: 999px;
            padding: 3px 10px;
            line-height: 1.4;
        }
        .site-footer .footer-heading {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin: 0 0 16px;
        }
        .site-footer .footer-list {
            list-style: none;
            margin: 0;
            padding: 0;
            display: grid;
            gap: 10px;
        }
        .site-footer .footer-list li {
            font-size: 14px;
            color: var(--footer-text);
            display: flex;
            align-items: center;
            gap: 10px;
            line-height: 1.5;
        }
        .site-footer .footer-list a {
            color: var(--footer-text);
            text-decoration: none;
            transition: color .2s;
        }
        .site-footer .footer-list a:hover {
            color: #fff;
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 20px 0;
            text-align: center;
        }
        .site-footer .footer-bottom p {
            margin: 0;
            font-size: 13px;
            color: #64748B;
        }

        /* CTA 盒 */
        .cta-box {
            background: var(--secondary);
            border-radius: 24px;
            position: relative;
            overflow: hidden;
            padding: 56px 32px;
        }
        @media (min-width: 768px) {
            .cta-box {
                padding: 64px 64px;
            }
        }
        .cta-box .decor {
            position: absolute;
            right: -40px;
            top: -40px;
            width: 160px;
            height: 160px;
            background: rgba(31, 111, 235, 0.08);
            border-radius: 50%;
        }
        .cta-box .decor2 {
            position: absolute;
            left: 30%;
            bottom: -60px;
            width: 120px;
            height: 120px;
            background: rgba(245, 158, 11, 0.06);
            border-radius: 50%;
        }

        /* 行截断 */
        .line-clamp-2 {
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .line-clamp-3 {
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        /* 导航栏滚动阴影增强 */
        .nav-scrolled {
            box-shadow: 0 2px 20px rgba(2, 12, 27, 0.08);
        }

        /* 焦点可见性 */
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            border-radius: 6px;
        }