/* roulang page: index */
:root {
            --brand: #2B6CB0;
            --brand-dark: #1A4D8C;
            --brand-light: #EAF2FB;
            --accent: #E8823C;
            --accent-light: #FCF0E6;
            --success: #2F9E62;
            --success-light: #E7F6EE;
            --bg: #F7F9FC;
            --white: #FFFFFF;
            --ink: #1E293B;
            --body: #475569;
            --muted: #64748B;
            --border: #E2E8F0;
            --radius-card: 1rem;
            --shadow-sm: 0 1px 2px rgba(15, 23, 42, .04), 0 1px 3px rgba(15, 23, 42, .06);
            --shadow-md: 0 8px 24px rgba(15, 23, 42, .08);
            --font: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: var(--font);
            background: var(--bg);
            color: var(--ink);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
        }
        a:focus-visible,
        button:focus-visible {
            outline: 3px solid rgba(43, 108, 176, .35);
            outline-offset: 2px;
            border-radius: 6px;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .shell {
            width: 100%;
            max-width: 80rem;
            margin-inline: auto;
            padding-inline: 1rem;
        }
        @media (min-width: 640px) {
            .shell {
                padding-inline: 1.5rem;
            }
        }
        @media (min-width: 1024px) {
            .shell {
                padding-inline: 2rem;
            }
        }
        .section {
            padding: 4.5rem 0;
        }
        @media (min-width: 768px) {
            .section {
                padding: 5.5rem 0;
            }
        }
        .section-title {
            font-size: 1.65rem;
            line-height: 1.3;
            font-weight: 800;
            letter-spacing: -.02em;
            color: var(--ink);
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2rem;
            }
        }
        .overline {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            background: var(--brand-light);
            color: var(--brand);
            font-size: .78rem;
            font-weight: 700;
            letter-spacing: .04em;
            padding: .3rem .8rem;
            border-radius: 999px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 2.75rem;
            padding: 0 1.5rem;
            border-radius: .55rem;
            font-weight: 600;
            font-size: .95rem;
            line-height: 1;
            border: 1px solid transparent;
            transition: all .2s ease;
            white-space: nowrap;
            cursor: pointer;
        }
        .btn-brand {
            background: var(--brand);
            color: #fff;
        }
        .btn-brand:hover {
            background: var(--brand-dark);
            box-shadow: 0 6px 16px rgba(43, 108, 176, .2);
        }
        .btn-accent {
            background: var(--accent);
            color: #fff;
        }
        .btn-accent:hover {
            background: #C56A28;
            box-shadow: 0 6px 16px rgba(232, 130, 60, .18);
        }
        .btn-outline {
            background: var(--white);
            border-color: var(--border);
            color: var(--ink);
        }
        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: #fff;
        }
        .btn-ghost {
            background: transparent;
            color: var(--brand);
            border-color: transparent;
        }
        .btn-ghost:hover {
            background: var(--brand-light);
            color: var(--brand-dark);
        }
        @media (max-width: 640px) {
            .btn:active {
                transform: scale(.97);
            }
        }
        .card {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            transition: box-shadow .2s, border-color .2s, transform .2s;
        }
        .card-hover:hover {
            border-color: rgba(43, 108, 176, .4);
            box-shadow: var(--shadow-md);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            font-size: .75rem;
            font-weight: 600;
            padding: .25rem .7rem;
            border-radius: 999px;
            white-space: nowrap;
        }
        .badge-brand {
            background: var(--brand-light);
            color: var(--brand);
        }
        .badge-success {
            background: var(--success-light);
            color: var(--success);
        }
        .badge-accent {
            background: var(--accent-light);
            color: #B85F24;
        }
        .form-label {
            display: block;
            margin-bottom: .45rem;
            font-size: .875rem;
            font-weight: 600;
            color: var(--ink);
        }
        .form-input {
            width: 100%;
            min-height: 3rem;
            padding: .7rem .9rem;
            border: 1px solid var(--border);
            border-radius: .65rem;
            background: var(--white);
            color: var(--ink);
            font-size: .95rem;
            transition: border-color .15s, box-shadow .15s;
        }
        .form-input:focus {
            border-color: var(--brand);
            outline: none;
            box-shadow: 0 0 0 3px rgba(43, 108, 176, .14);
        }
        textarea.form-input {
            min-height: 6.5rem;
            resize: vertical;
        }
        .faq-item {
            background: var(--white);
            border: 1px solid var(--border);
            border-radius: 1rem;
            overflow: hidden;
            margin-bottom: .85rem;
            transition: border-color .2s;
        }
        .faq-item:hover {
            border-color: rgba(43, 108, 176, .3);
        }
        .faq-item[open] {
            border-color: rgba(43, 108, 176, .45);
        }
        .faq-summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            list-style: none;
            cursor: pointer;
            padding: 1.15rem 1.4rem;
            font-weight: 600;
            font-size: 1rem;
            color: var(--ink);
            background: #fff;
        }
        .faq-summary::-webkit-details-marker {
            display: none;
        }
        .faq-summary::marker {
            display: none;
        }
        .faq-plus {
            font-size: 1.5rem;
            line-height: 1;
            color: var(--brand);
            font-weight: 300;
            transform: rotate(0);
            transition: transform .2s;
            flex: none;
        }
        .faq-item[open] .faq-plus {
            transform: rotate(45deg);
        }
        .faq-body {
            padding: 0 1.4rem 1.35rem;
            color: var(--body);
            font-size: .95rem;
            line-height: 1.85;
        }
        .site-footer {
            background: #152A42;
            color: #A7B8CD;
        }
        .footer-title {
            color: #EEF4FA;
            font-weight: 700;
            font-size: .95rem;
            letter-spacing: .02em;
        }
        .footer-link {
            display: inline-block;
            color: #A7B8CD;
            transition: color .2s;
            font-size: .9rem;
        }
        .footer-link:hover {
            color: #fff;
        }
        .table-wrap {
            overflow-x: auto;
            border-radius: 1rem;
            border: 1px solid var(--border);
            background: var(--white);
        }
        .table-compare {
            width: 100%;
            min-width: 760px;
            border-collapse: collapse;
        }
        .table-compare th,
        .table-compare td {
            padding: .95rem 1.1rem;
            border-bottom: 1px solid var(--border);
            font-size: .92rem;
            text-align: left;
            vertical-align: middle;
        }
        .table-compare thead th {
            background: #F8FAFC;
            font-weight: 700;
            color: var(--ink);
        }
        .table-compare tbody tr:last-child td {
            border-bottom: 0;
        }
        .table-compare .compare-label {
            color: var(--muted);
            font-weight: 500;
        }
        .table-compare .hl-col {
            background: rgba(43, 108, 176, .05);
        }

/* roulang page: category1 */
:root {
            --brand: #2B6CB0;
            --brand-dark: #1F4A72;
            --sunset: #E8823C;
            --success: #2F9E62;
            --bg: #F7F9FC;
            --ink: #1E293B;
            --muted: #475569;
            --weak: #64748B;
            --line: #E2E8F0;
            --card: #ffffff;
            --shadow-sm: 0 6px 20px rgba(30, 41, 59, .06);
            --shadow-md: 0 14px 32px rgba(30, 41, 59, .11);
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--bg);
            color: var(--ink);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            line-height: 1.65;
            text-rendering: optimizeLegibility;
        }

        a {
            text-decoration: none;
            color: inherit;
        }

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

        .shell {
            width: 100%;
            max-width: 80rem;
            margin-inline: auto;
            padding-inline: 1rem;
        }

        @media (min-width: 640px) {
            .shell {
                padding-inline: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .shell {
                padding-inline: 2rem;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .94);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 2.75rem;
            padding-inline: 1.5rem;
            border-radius: .6rem;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            border: 1px solid transparent;
            transition: all .2s ease;
        }

        .btn-primary:hover,
        .btn-primary:focus-visible {
            background: #245d99;
            box-shadow: 0 8px 20px rgba(43, 108, 176, .22);
            outline: none;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 2.75rem;
            padding-inline: 1.5rem;
            border-radius: .6rem;
            background: #fff;
            border: 1px solid #CBD5E1;
            color: var(--brand);
            font-weight: 600;
            font-size: .95rem;
            transition: all .2s ease;
        }

        .btn-secondary:hover,
        .btn-secondary:focus-visible {
            border-color: var(--brand);
            background: #F0F6FC;
            color: var(--brand-dark);
            outline: none;
        }

        .btn-white {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 2.75rem;
            padding-inline: 1.5rem;
            border-radius: .6rem;
            background: #fff;
            color: var(--brand-dark);
            font-weight: 700;
            font-size: .95rem;
            transition: all .2s ease;
        }

        .btn-white:hover {
            background: #EFF6FF;
            box-shadow: 0 10px 22px rgba(255, 255, 255, .18);
        }

        .btn-ghost-light {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 2.75rem;
            padding-inline: 1.5rem;
            border-radius: .6rem;
            border: 1px solid rgba(255, 255, 255, .7);
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            transition: all .2s ease;
        }

        .btn-ghost-light:hover {
            background: rgba(255, 255, 255, .14);
            color: #fff;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .5rem;
            font-size: .85rem;
            font-weight: 600;
            color: var(--brand);
        }

        .section-label::before {
            content: "";
            width: 1.25rem;
            height: 2px;
            border-radius: 2px;
            background: var(--brand);
        }

        .card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1rem;
            transition: box-shadow .22s ease, border-color .22s ease;
        }

        .card:hover {
            box-shadow: var(--shadow-sm);
            border-color: #B9D1EC;
        }

        .page-hero-bg {
            background:
                radial-gradient(circle at 86% 14%, rgba(43, 108, 176, .16), transparent 22%),
                radial-gradient(circle at 22% 92%, rgba(232, 165, 83, .14), transparent 18%),
                linear-gradient(112deg, #F1F7FD, #F7F9FC 52%, #F9FBF8);
        }

        .metric-card {
            background: rgba(255, 255, 255, .72);
            border: 1px solid rgba(255, 255, 255, .8);
            border-radius: .9rem;
            box-shadow: var(--shadow-sm);
        }

        .platform-ul li {
            position: relative;
            padding-left: 1.6rem;
            color: var(--muted);
        }

        .platform-ul li::before {
            content: "";
            position: absolute;
            left: .1rem;
            top: .48rem;
            width: .6rem;
            height: .35rem;
            border-left: 2px solid var(--success);
            border-bottom: 2px solid var(--success);
            transform: rotate(-45deg);
        }

        .footer-bg {
            background: #10263F;
        }

        .footer-title {
            font-weight: 700;
            color: #EAF1F8;
            font-size: .95rem;
            margin: 0;
        }

        .footer-link {
            display: inline-block;
            color: #B9CBE0;
            font-size: .9rem;
            line-height: 1.4;
            transition: color .2s ease;
        }

        .footer-link:hover {
            color: #fff;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1rem;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .faq-item.active {
            border-color: #B9D1EC;
            box-shadow: var(--shadow-sm);
        }

        .faq-toggle {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            background: transparent;
            border: 0;
            padding: 1rem 1.15rem;
            cursor: pointer;
            text-align: left;
            color: var(--ink);
            font-size: 1.02rem;
            font-weight: 600;
            border-radius: 1rem;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 999px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: #EEF4FA;
            color: var(--brand);
            font-weight: 700;
            font-size: 1rem;
            transition: transform .28s ease, background .2s ease;
        }

        .faq-item.active .faq-icon {
            background: var(--brand);
            color: #fff;
            transform: rotate(135deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .3s ease;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 400px;
        }

        .tab-panel-link:hover {
            background: #F0F5FB;
        }

        .table-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 1.25rem;
            box-shadow: var(--shadow-sm);
        }

        .compare-table th,
        .compare-table td {
            padding: .85rem 1rem;
            border-bottom: 1px solid #EDF2F7;
            font-size: .94rem;
        }

        .compare-table thead th {
            font-weight: 700;
            color: var(--ink);
            background: #F7FAFD;
        }

        .compare-table td {
            color: var(--muted);
        }

        .compare-table tr:last-child td {
            border-bottom: 0;
        }

        .recommend-column {
            background: rgba(238, 246, 255, .58);
        }

        .form-control {
            width: 100%;
            background: #fff;
            border: 1px solid #CBD5E1;
            border-radius: .65rem;
            padding: .7rem .95rem;
            font-size: .95rem;
            color: var(--ink);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-control:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 3px rgba(43, 108, 176, .12);
            outline: none;
        }

        .form-control::placeholder {
            color: #94A3B8;
        }

        @media (max-width: 640px) {
            .compare-table th,
            .compare-table td {
                padding: .7rem .6rem;
                font-size: .86rem;
            }
        }

/* roulang page: article */
:root {
            --brand: #2B6CB0;
            --brand-dark: #245A96;
            --brand-deep: #1F4A72;
            --accent: #E8823C;
            --success: #2F9E62;
            --page-bg: #F7F9FC;
            --surface: #ffffff;
            --ink: #1E293B;
            --text-sub: #475569;
            --text-soft: #64748B;
            --line: #E2E8F0;
            --shadow-card: 0 1px 2px rgba(15, 23, 42, .04), 0 10px 30px rgba(15, 23, 42, .05);
            --radius-lg: 18px;
            --radius-xl: 28px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            background: var(--page-bg);
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
            color: var(--ink);
            font-size: 16px;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input,
        textarea,
        select {
            font: inherit;
        }

        .shell {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }

        @media (min-width: 640px) {
            .shell {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .shell {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, .92);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--line);
        }

        .site-header .logo-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--brand);
            color: #fff;
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .logo-name {
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: -.02em;
            color: var(--ink);
            white-space: nowrap;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            height: 40px;
            padding: 0 1.2rem;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: .95rem;
            border-radius: 10px;
            transition: background .2s ease, transform .2s ease, box-shadow .2s ease;
            cursor: pointer;
            border: 0;
        }

        .nav-cta:hover {
            background: var(--brand-dark);
            box-shadow: 0 8px 20px rgba(43, 108, 176, .22);
        }

        .mobile-menu {
            background: #fff;
            border-bottom: 1px solid var(--line);
            padding: 1rem 1rem 1.4rem;
            position: absolute;
            left: 0;
            right: 0;
            top: 100%;
            box-shadow: 0 14px 30px rgba(15, 23, 42, .08);
            border-radius: 0 0 20px 20px;
        }

        .mobile-menu a {
            display: block;
            padding: .7rem 0;
            font-weight: 500;
            color: var(--text-sub);
            border-bottom: 1px solid #f1f5f9;
        }

        .article-hero {
            position: relative;
            background:
                linear-gradient(110deg, rgba(247, 249, 252, .94) 0%, rgba(255, 255, 255, .88) 48%, rgba(224, 239, 255, .7) 100%),
                url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
            border-bottom: 1px solid rgba(226, 232, 240, .8);
            overflow: hidden;
        }

        .article-hero::before {
            content: "";
            position: absolute;
            width: 360px;
            height: 360px;
            right: -90px;
            top: -110px;
            background: rgba(43, 108, 176, .08);
            border-radius: 50%;
            filter: blur(30px);
            pointer-events: none;
        }

        .article-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
        }

        .article-cover img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-radius: 16px;
        }

        @media (min-width: 768px) {
            .article-cover img {
                height: 360px;
            }
        }

        .article-content {
            font-size: 1.05rem;
            line-height: 1.9;
            color: #334155;
        }

        .article-content>p {
            margin: 0 0 1.6rem;
        }

        .article-content h2 {
            font-size: 1.45rem;
            font-weight: 700;
            color: #0F172A;
            margin: 2.6rem 0 1.1rem;
            padding-left: .8rem;
            border-left: 4px solid var(--brand);
            line-height: 1.45;
        }

        .article-content h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: #0F172A;
            margin: 2rem 0 .8rem;
        }

        .article-content ul,
        .article-content ol {
            margin: 0 0 1.6rem;
            padding-left: 1.4rem;
        }

        .article-content ul li,
        .article-content ol li {
            margin-bottom: .55rem;
        }

        .article-content ul {
            list-style: disc;
        }

        .article-content ol {
            list-style: decimal;
        }

        .article-content blockquote {
            margin: 2rem 0;
            padding: 1.2rem 1.5rem;
            background: #F8FAFC;
            border-left: 4px solid var(--brand);
            border-radius: 0 12px 12px 0;
            color: var(--text-sub);
        }

        .article-content img {
            border-radius: 14px;
            border: 1px solid var(--line);
            margin: 2rem auto;
        }

        .article-content a {
            color: var(--brand);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-content a:hover {
            color: var(--brand-dark);
        }

        .empty-box {
            border: 1.5px dashed #CBD5E1;
            border-radius: 24px;
            background: #fff;
            text-align: center;
            padding: 5rem 2rem;
            margin-top: 2rem;
        }

        .news-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 18px;
            overflow: hidden;
            transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
        }

        .news-card:hover {
            border-color: #BFDBFE;
            box-shadow: 0 16px 34px rgba(15, 23, 42, .08);
            transform: translateY(-4px);
        }

        .news-card img {
            height: 190px;
            width: 100%;
            object-fit: cover;
        }

        .cta-band {
            background:
                linear-gradient(120deg, rgba(31, 74, 114, .96), rgba(43, 108, 176, .96)),
                url('/assets/images/backpic/back-2.webp') center center / cover no-repeat;
        }

        .footer {
            background: #152E49;
            color: #94A3B8;
            padding-top: 64px;
            padding-bottom: 32px;
        }

        .footer-title {
            color: #E2E8F0;
            font-weight: 600;
            font-size: 1rem;
            letter-spacing: .02em;
        }

        .footer-link {
            color: #94A3B8;
            transition: color .2s ease;
        }

        .footer-link:hover {
            color: #fff;
        }

        .footer-bottom {
            border-top: 1px solid rgba(226, 232, 240, .12);
            margin-top: 44px;
            padding-top: 24px;
            color: #7C8EA5;
            font-size: .9rem;
        }

        .faq-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 14px;
            padding: 1.2rem 1.3rem;
        }

        .faq-card summary {
            list-style: none;
            cursor: pointer;
            font-weight: 600;
            color: var(--ink);
            padding-right: 2rem;
            position: relative;
            line-height: 1.6;
        }

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

        .faq-card summary::after {
            content: "+";
            position: absolute;
            right: .2rem;
            top: 0;
            font-size: 1.5rem;
            font-weight: 400;
            color: var(--brand);
            transition: transform .25s ease;
            line-height: 1;
        }

        .faq-card[open] summary::after {
            transform: rotate(45deg);
        }

        .faq-card .faq-body {
            margin-top: .9rem;
            padding-top: .9rem;
            border-top: 1px solid #F1F5F9;
            color: var(--text-sub);
        }

        .contact-card {
            background: #fff;
            border: 1px solid var(--line);
            border-radius: 24px;
            padding: 2rem;
        }

        .form-input {
            width: 100%;
            border: 1px solid #CBD5E1;
            background: #fff;
            padding: .7rem 1rem;
            border-radius: 10px;
            color: var(--ink);
            outline: none;
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-input:focus {
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(43, 108, 176, .1);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            height: 46px;
            padding: 0 1.4rem;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            border: 0;
            border-radius: 10px;
            cursor: pointer;
            transition: background .2s ease, box-shadow .2s ease;
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: 0 10px 22px rgba(43, 108, 176, .22);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            height: 46px;
            padding: 0 1.4rem;
            background: #fff;
            color: var(--brand);
            font-weight: 600;
            border: 1.5px solid #BFDBFE;
            border-radius: 10px;
            cursor: pointer;
            transition: background .2s ease, border-color .2s ease;
        }

        .btn-outline:hover {
            background: #EFF6FF;
            border-color: var(--brand);
        }

        .btn-accent {
            background: var(--accent);
            color: #fff;
            border: 0;
        }

        .btn-accent:hover {
            background: #D46E2B;
            box-shadow: 0 10px 22px rgba(232, 130, 60, .25);
        }

        .tag-pill {
            display: inline-flex;
            align-items: center;
            background: rgba(43, 108, 176, .1);
            color: var(--brand);
            font-size: .8rem;
            font-weight: 600;
            padding: .3rem .8rem;
            border-radius: 999px;
        }

        .section-badge {
            display: inline-block;
            background: rgba(43, 108, 176, .08);
            color: var(--brand);
            font-size: .8rem;
            font-weight: 600;
            padding: .25rem .85rem;
            border-radius: 999px;
            letter-spacing: .02em;
        }

        .card-strip-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: #EFF6FF;
            color: var(--brand);
            display: inline-flex;
            align-items: center;
            justify-content: center;
        }

        .meta-dot {
            color: #CBD5E1;
        }

        @media (max-width: 640px) {
            .logo-name {
                font-size: 1.05rem;
            }
            .article-content {
                font-size: 1rem;
            }
            .article-content h2 {
                font-size: 1.3rem;
            }
            .contact-card {
                padding: 1.4rem;
            }
            .cta-band .cta-actions {
                margin-top: 1rem;
                flex-direction: column;
                align-items: stretch;
            }
        }

/* roulang page: category2 */
:root {
            --brand: #2B6CB0;
            --brand-dark: #1F4A72;
            --accent: #E8823C;
            --green: #2F9E62;
            --bg: #F7F9FC;
            --card-bg: #FFFFFF;
            --text: #1E293B;
            --text-secondary: #475569;
            --text-muted: #64748B;
            --border: #E2E8F0;
            --radius: 0.75rem;
            --shadow-sm: 0 1px 2px rgba(30, 41, 59, .05);
            --shadow-md: 0 10px 28px rgba(30, 41, 59, .07);
            --font: system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            margin: 0;
            font-family: var(--font);
            background: var(--bg);
            color: var(--text);
            line-height: 1.7;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            color: inherit;
            text-decoration: none;
        }

        button,
        input,
        textarea {
            font: inherit;
        }

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

        .shell {
            width: 100%;
            max-width: 80rem;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        @media (min-width: 640px) {
            .shell {
                padding-left: 1.5rem;
                padding-right: 1.5rem;
            }
        }

        @media (min-width: 1024px) {
            .shell {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }

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

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

        /* 公共按钮 */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            height: 2.75rem;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            border: none;
            border-radius: .5rem;
            background: var(--brand);
            color: #fff;
            font-weight: 600;
            font-size: .9375rem;
            line-height: 1;
            cursor: pointer;
            transition: background .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        .btn-primary:hover {
            background: var(--brand-dark);
            box-shadow: 0 8px 20px rgba(43, 108, 176, .18);
        }

        .btn-primary:active {
            transform: scale(.98);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            height: 2.75rem;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            border: 1px solid #CBD5E1;
            border-radius: .5rem;
            background: #fff;
            color: var(--text);
            font-weight: 600;
            font-size: .9375rem;
            transition: all .2s ease;
        }

        .btn-outline:hover {
            border-color: var(--brand);
            color: var(--brand);
            background: #F0F7FF;
        }

        .btn-accent {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .5rem;
            height: 2.75rem;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
            border: none;
            border-radius: .5rem;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            font-size: .9375rem;
            transition: background .2s ease, box-shadow .2s ease;
        }

        .btn-accent:hover {
            background: #D46727;
            box-shadow: 0 8px 20px rgba(232, 130, 60, .18);
        }

        .pill {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            border-radius: 999px;
            background: rgba(43, 108, 176, .08);
            color: var(--brand);
            font-size: .8125rem;
            font-weight: 600;
            padding: .3rem .8rem;
            letter-spacing: .02em;
        }

        .section-heading h2 {
            font-size: 1.75rem;
            line-height: 1.2;
            font-weight: 700;
            letter-spacing: -0.02em;
        }

        .section-heading .bar {
            height: .25rem;
            width: 2.5rem;
            margin-top: .8rem;
            border-radius: 999px;
            background: var(--brand);
        }

        @media (min-width: 768px) {
            .section-heading h2 {
                font-size: 2rem;
            }
        }

        /* 页头带 */
        .page-hero {
            position: relative;
            overflow: hidden;
            background-color: #EAF3FB;
            border-bottom: 1px solid #E2E8F0;
        }

        .page-hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.png');
            background-position: center;
            background-size: cover;
            background-repeat: no-repeat;
            opacity: .28;
        }

        .page-hero .hero-content {
            position: relative;
            z-index: 2;
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }

        @media (min-width: 768px) {
            .page-hero .hero-content {
                padding-top: 4.5rem;
                padding-bottom: 4.5rem;
            }
        }

        .light-tick {
            display: inline-flex;
            align-items: center;
            gap: .45rem;
            font-size: .875rem;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, .7);
            border: 1px solid rgba(226, 232, 240, .9);
            padding: .3rem .8rem;
            border-radius: 999px;
        }

        /* 通用卡片 */
        .soft-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            padding: 1.5rem;
            transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
        }

        .soft-card:hover {
            border-color: #BBD5F0;
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }

        /* 表单 */
        .form-label {
            display: block;
            font-size: .875rem;
            font-weight: 500;
            color: var(--text-secondary);
            margin-bottom: .4rem;
        }

        .form-input,
        .form-textarea {
            width: 100%;
            border: 1px solid var(--border);
            background: #fff;
            border-radius: .5rem;
            padding: .65rem .9rem;
            font-size: .9375rem;
            color: var(--text);
            transition: border-color .2s ease, box-shadow .2s ease;
        }

        .form-input::placeholder,
        .form-textarea::placeholder {
            color: #94A3B8;
        }

        .form-input:focus,
        .form-textarea:focus {
            outline: none;
            border-color: var(--brand);
            box-shadow: 0 0 0 4px rgba(43, 108, 176, .12);
        }

        /* FAQ */
        .faq-toggle {
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1rem;
            padding: 1rem 1.25rem;
            text-align: left;
        }

        .faq-icon {
            flex: 0 0 auto;
            display: grid;
            place-items: center;
            width: 1.5rem;
            height: 1.5rem;
            border-radius: 999px;
            background: rgba(43, 108, 176, .08);
            color: var(--brand);
            font-size: 1rem;
            font-weight: 500;
            transition: transform .25s ease, background .25s ease;
        }

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

        /* 流程 */
        .step-line {
            position: relative;
            padding-left: 3.2rem;
        }

        .step-line::before {
            content: "";
            position: absolute;
            left: 1rem;
            top: 2.5rem;
            bottom: -1.5rem;
            width: 1px;
            background: linear-gradient(to bottom, #E2E8F0, #E2E8F0);
        }

        .step-item:last-child .step-line::before {
            display: none;
        }

        .step-dot {
            position: absolute;
            left: 0;
            top: .2rem;
            width: 2rem;
            height: 2rem;
            border-radius: 999px;
            background: #fff;
            border: 1px solid #D6E5F5;
            color: var(--brand);
            display: grid;
            place-items: center;
            font-weight: 700;
            font-size: .8125rem;
            box-shadow: 0 4px 10px rgba(43, 108, 176, .06);
        }

        /* 对比表 */
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 1rem;
            overflow: hidden;
        }

        .compare-table th,
        .compare-table td {
            text-align: left;
            padding: .9rem 1rem;
            font-size: .875rem;
            border-bottom: 1px solid #EDF1F5;
            vertical-align: top;
        }

        .compare-table th {
            background: #F8FAFC;
            color: var(--text);
            font-weight: 600;
        }

        .compare-table tr:last-child td {
            border-bottom: none;
        }

        .compare-table .rec-col {
            background: #F0F7FF;
        }

        /* 页脚 */
        .site-footer {
            background: var(--brand-dark);
            color: #BFD0DF;
        }

        .site-footer .footer-title {
            color: #E6EDF5;
            font-size: .85rem;
            font-weight: 600;
            letter-spacing: .04em;
            margin-bottom: .5rem;
        }

        .site-footer .footer-link {
            color: #A9BED2;
            font-size: .875rem;
            transition: color .2s ease;
        }

        .site-footer .footer-link:hover {
            color: #fff;
        }

        /* 表格移动横向滚动 */
        .table-scroll {
            -webkit-overflow-scrolling: touch;
        }

        .table-scroll::-webkit-scrollbar {
            height: 6px;
        }

        .table-scroll::-webkit-scrollbar-thumb {
            background: #CBD5E1;
            border-radius: 999px;
        }