/* roulang page: index */
:root {
            --brand: #123F35;
            --brand-dark: #0E2A22;
            --brand-light: #3DD68C;
            --lime: #B7F34A;
            --orange: #FF8A3D;
            --bg: #F7F6F2;
            --text: #16211C;
            --muted: #5A6B63;
            --border: #DFE8E1;
            --radius-card: 16px;
            --radius-btn: 11px;
            --shadow-sm: 0 1px 2px rgba(18, 63, 53, .06);
            --shadow-md: 0 4px 12px rgba(18, 63, 53, .08);
            --shadow-hover: 0 8px 24px rgba(18, 63, 53, .12);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'Roboto Mono', 'SF Mono', monospace;
        }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
        }
        a { text-decoration: none; color: inherit; transition: color .2s ease; }
        img { max-width: 100%; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }
        .container-slim { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1rem; padding-right: 1rem; }
        @media (min-width: 1024px) { .container-slim { padding-left: 2rem; padding-right: 2rem; } }
        @media (min-width: 1280px) { .container-slim { padding-left: 3rem; padding-right: 3rem; } }

        .section-space { padding-top: 3.5rem; padding-bottom: 3.5rem; }
        @media (min-width: 768px) { .section-space { padding-top: 4rem; padding-bottom: 4rem; } }
        @media (min-width: 1024px) { .section-space { padding-top: 5rem; padding-bottom: 5rem; } }

        .section-label {
            display: inline-flex; align-items: center; gap: .4rem;
            font-size: .8rem; font-weight: 600; letter-spacing: .08em;
            color: var(--brand); text-transform: uppercase;
            background: rgba(18, 63, 53, .06);
            padding: .35rem .8rem; border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-label .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }
        .section-title { font-size: 1.7rem; font-weight: 700; color: var(--brand-dark); line-height: 1.3; letter-spacing: -.01em; }
        @media (min-width: 768px) { .section-title { font-size: 2.1rem; } }
        @media (min-width: 1024px) { .section-title { font-size: 2.3rem; } }
        .section-subtitle { font-size: 1rem; color: var(--muted); max-width: 680px; margin-top: .6rem; }

        .btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: .7rem 1.3rem; border-radius: var(--radius-btn); font-weight: 600; font-size: .95rem; cursor: pointer; border: none; transition: background .25s ease, color .25s ease, transform .15s ease, box-shadow .25s ease, border-color .25s ease; }
        .btn:focus-visible { outline: 3px solid rgba(183, 243, 74, .6); outline-offset: 2px; }
        .btn:active { transform: translateY(1px); }
        .btn-primary { background: var(--brand); color: #fff; }
        .btn-primary:hover { background: var(--orange); color: #fff; box-shadow: var(--shadow-hover); }
        .btn-secondary { background: transparent; color: var(--brand); border: 1.5px solid var(--brand); }
        .btn-secondary:hover { background: rgba(18, 63, 53, .06); border-color: var(--orange); color: var(--orange); }
        .btn-lime { background: var(--lime); color: var(--brand-dark); }
        .btn-lime:hover { background: var(--orange); color: #fff; }

        .card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: var(--shadow-sm); transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease; }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(18, 63, 53, .25); }

        .badge { display: inline-flex; align-items: center; gap: .3rem; padding: .3rem .7rem; border-radius: 999px; font-size: .75rem; font-weight: 600; letter-spacing: .02em; }
        .badge-lime { background: rgba(183, 243, 74, .22); color: var(--brand-dark); }
        .badge-orange { background: rgba(255, 138, 61, .18); color: #b85c1f; }
        .badge-green { background: rgba(61, 214, 140, .15); color: var(--brand); }

        .header-nav { position: sticky; top: 0; z-index: 50; background: rgba(247, 246, 242, .96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
        .nav-link { position: relative; font-size: .95rem; font-weight: 500; color: var(--text); padding: .5rem .7rem; transition: color .2s ease; }
        .nav-link:hover { color: var(--orange); }
        .nav-link.active { color: var(--brand); font-weight: 700; }
        .nav-link.active::after { content: ''; position: absolute; left: .7rem; right: .7rem; bottom: 4px; height: 3px; background: var(--brand); border-radius: 3px; }

        .mega-panel { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); width: 760px; max-width: 92vw; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: 0 12px 40px rgba(18, 63, 53, .14); padding: 1.5rem; opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s ease; }
        .mega-trigger:hover .mega-panel, .mega-trigger:focus-within .mega-panel { opacity: 1; visibility: visible; }
        .mega-card { display: flex; align-items: center; gap: .8rem; background: var(--bg); border-radius: 12px; padding: .8rem 1rem; transition: background .2s ease; }
        .mega-card:hover { background: #fff; box-shadow: var(--shadow-sm); }

        .ticker-scroll { overflow-x: auto; scrollbar-width: thin; scrollbar-color: var(--brand) var(--bg); }
        .ticker-scroll::-webkit-scrollbar { height: 4px; }
        .ticker-scroll::-webkit-scrollbar-track { background: var(--bg); }
        .ticker-scroll::-webkit-scrollbar-thumb { background: var(--brand); border-radius: 20px; }

        .faq-item { border-bottom: 1px solid var(--border); }
        .faq-question { cursor: pointer; padding: 1.1rem .5rem; font-weight: 600; color: var(--brand-dark); display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease, padding .3s ease; color: var(--muted); padding: 0 .5rem; }
        .faq-item.open .faq-answer { max-height: 300px; padding-bottom: 1.2rem; }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .faq-icon { transition: transform .3s ease; font-size: 1.4rem; color: var(--brand); }

        .table-wrapper { overflow-x: auto; border-radius: var(--radius-card); border: 1px solid var(--border); }
        .data-table { width: 100%; border-collapse: collapse; min-width: 720px; font-size: .9rem; }
        .data-table th { background: var(--brand-dark); color: #fff; font-weight: 600; padding: .9rem 1rem; text-align: left; white-space: nowrap; }
        .data-table td { padding: .9rem 1rem; border-top: 1px solid var(--border); }
        .data-table tr:nth-child(even) { background: rgba(247, 246, 242, .7); }
        .data-table tr:hover td { background: rgba(183, 243, 74, .07); }

        .stat-number { font-family: var(--font-num); font-variant-numeric: tabular-nums; }
        .hero-bg-image { background-image: url('/assets/images/ca7a98a0fcc11273.webp'); background-size: cover; background-position: center; }
        .hero-overlay { background: linear-gradient(120deg, rgba(14, 42, 34, .93) 0%, rgba(18, 63, 53, .88) 45%, rgba(18, 63, 53, .68) 100%); }
        .mobile-menu { display: none; }
        .mobile-menu.open { display: block; }
        .news-meta { font-size: .8rem; color: var(--muted); display: flex; align-items: center; gap: .5rem; }
        .news-item { border-left: 3px solid var(--border); padding-left: 1rem; transition: border-color .3s ease; }
        .news-item:hover { border-left-color: var(--orange); }
        .price-card.featured { border-color: var(--brand); box-shadow: 0 8px 30px rgba(18, 63, 53, .14); position: relative; }
        .price-card.featured::before { content: '主推方案'; position: absolute; top: -14px; right: -8px; background: var(--orange); color: #fff; padding: .3rem .9rem; border-radius: 999px; font-size: .75rem; font-weight: 600; }
        .star { color: var(--orange); font-size: 1.1rem; }
        .footer-link { color: #c5d6ce; font-size: .9rem; transition: color .2s ease; }
        .footer-link:hover { color: var(--lime); }

        @media (max-width: 1023px) {
            .nav-desktop { display: none; }
            .hamburger { display: flex; }
            .mega-panel { display: none; }
        }
        @media (min-width: 1024px) {
            .hamburger { display: none; }
            .nav-desktop { display: flex; }
        }

/* roulang page: category1 */
:root {
            --brand: #123F35;
            --brand-dark: #0E2A22;
            --brand-light: #3DD68C;
            --lime: #B7F34A;
            --orange: #FF8A3D;
            --bg: #F7F6F2;
            --text: #16211C;
            --muted: #5A6B63;
            --border: #DFE8E1;
            --radius-card: 16px;
            --radius-btn: 11px;
            --shadow-sm: 0 1px 2px rgba(18, 63, 53, .06);
            --shadow-md: 0 4px 12px rgba(18, 63, 53, .08);
            --shadow-hover: 0 8px 24px rgba(18, 63, 53, .12);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'Roboto Mono', 'SF Mono', monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button,
        input,
        textarea,
        select {
            font-family: inherit;
            font-size: inherit;
        }
        .container-slim {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 768px) {
            .container-slim {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container-slim {
                padding-left: 3rem;
                padding-right: 3rem;
            }
        }
        .section-space {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-space {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
        }
        @media (min-width: 1024px) {
            .section-space {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand);
            text-transform: uppercase;
            background: rgba(18, 63, 53, .06);
            padding: .35rem .8rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-label .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--orange);
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.3;
            letter-spacing: -.01em;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.1rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.3rem;
            }
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--muted);
            max-width: 680px;
            margin-top: .6rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            padding: .7rem 1.3rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            border: none;
            transition: background .25s ease, color .25s ease, transform .15s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(183, 243, 74, .6);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--orange);
            color: #fff;
            box-shadow: var(--shadow-hover);
        }
        .btn-secondary {
            background: transparent;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background: rgba(18, 63, 53, .06);
            border-color: var(--orange);
            color: var(--orange);
        }
        .btn-lime {
            background: var(--lime);
            color: var(--brand-dark);
        }
        .btn-lime:hover {
            background: var(--orange);
            color: #fff;
        }
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(18, 63, 53, .25);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            padding: .3rem .7rem;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .badge-lime {
            background: rgba(183, 243, 74, .22);
            color: var(--brand-dark);
        }
        .badge-orange {
            background: rgba(255, 138, 61, .18);
            color: #b85c1f;
        }
        .badge-green {
            background: rgba(61, 214, 140, .15);
            color: var(--brand);
        }
        .header-nav {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(247, 246, 242, .96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
        }
        .nav-link {
            position: relative;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text);
            padding: .5rem .7rem;
            transition: color .2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--orange);
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: .7rem;
            right: .7rem;
            bottom: 4px;
            height: 3px;
            background: var(--brand);
            border-radius: 3px;
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            width: 720px;
            max-width: 92vw;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: 0 12px 40px rgba(18, 63, 53, .14);
            padding: 1.5rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
            z-index: 60;
        }
        .mega-trigger:hover .mega-panel,
        .mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
        }
        .mega-card {
            display: flex;
            align-items: center;
            gap: .8rem;
            background: var(--bg);
            border-radius: 12px;
            padding: .8rem 1rem;
            transition: background .2s ease;
        }
        .mega-card:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .nav-desktop {
            display: none;
        }
        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
                align-items: center;
                gap: .25rem;
            }
        }
        .hamburger {
            display: inline-flex;
        }
        @media (min-width: 1024px) {
            .hamburger {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-question {
            cursor: pointer;
            padding: 1.1rem .5rem;
            font-weight: 600;
            color: var(--brand-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            color: var(--muted);
            padding: 0 .5rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon {
            transition: transform .3s ease;
            font-size: 1.4rem;
            color: var(--brand);
            font-weight: 400;
        }
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 860px;
            font-size: .9rem;
        }
        .data-table th {
            background: var(--brand-dark);
            color: #fff;
            font-weight: 600;
            padding: .95rem 1rem;
            text-align: left;
            white-space: nowrap;
            letter-spacing: .02em;
        }
        .data-table td {
            padding: .95rem 1rem;
            border-top: 1px solid var(--border);
            color: var(--text);
            vertical-align: middle;
        }
        .data-table tbody tr {
            transition: background .2s ease;
        }
        .data-table tbody tr:hover {
            background: rgba(183, 243, 74, .08);
        }
        .data-table .num-cell {
            font-family: var(--font-num);
            font-weight: 600;
            color: var(--brand);
        }
        .data-table .result-cell {
            font-family: var(--font-num);
            letter-spacing: .05em;
            font-weight: 600;
            color: var(--brand-dark);
        }
        .footer-link {
            color: rgba(255, 255, 255, .7);
            transition: color .2s ease;
            font-size: .9rem;
        }
        .footer-link:hover {
            color: var(--lime);
        }
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: .8rem;
            align-items: center;
        }
        .filter-select,
        .filter-input {
            padding: .55rem .9rem;
            border-radius: 10px;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--text);
            font-size: .9rem;
            min-width: 140px;
            transition: border-color .2s ease, box-shadow .2s ease;
        }
        .filter-select:focus,
        .filter-input:focus {
            outline: none;
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(183, 243, 74, .25);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .85rem;
            color: var(--muted);
            margin-bottom: .8rem;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--muted);
            transition: color .2s ease;
        }
        .breadcrumb a:hover {
            color: var(--brand);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--brand-dark);
            font-weight: 600;
        }
        .stat-mini-card {
            padding: 1rem 1.2rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 12px;
            display: flex;
            flex-direction: column;
            gap: .25rem;
        }
        .stat-mini-card .stat-num {
            font-family: var(--font-num);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--brand);
            line-height: 1.2;
        }
        .stat-mini-card .stat-label {
            font-size: .8rem;
            color: var(--muted);
        }
        .tool-card-link {
            display: block;
            transition: transform .25s ease;
        }
        .tool-card-link:hover {
            transform: translateY(-2px);
        }
        .tool-card-link:hover .card {
            box-shadow: var(--shadow-hover);
            border-color: rgba(18, 63, 53, .25);
        }

/* roulang page: category3 */
/* roulang page: wanfa-guize */
        :root {
            --brand: #123F35;
            --brand-dark: #0E2A22;
            --brand-light: #3DD68C;
            --lime: #B7F34A;
            --orange: #FF8A3D;
            --bg: #F7F6F2;
            --text: #16211C;
            --muted: #5A6B63;
            --border: #DFE8E1;
            --radius-card: 16px;
            --radius-btn: 11px;
            --shadow-sm: 0 1px 2px rgba(18, 63, 53, .06);
            --shadow-md: 0 4px 12px rgba(18, 63, 53, .08);
            --shadow-hover: 0 8px 24px rgba(18, 63, 53, .12);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'Roboto Mono', 'SF Mono', monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            margin: 0;
            padding: 0;
        }
        * {
            box-sizing: border-box;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
        }
        .container-slim {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container-slim {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container-slim {
                padding-left: 3rem;
                padding-right: 3rem;
            }
        }
        .section-space {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-space {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
        }
        @media (min-width: 1024px) {
            .section-space {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand);
            text-transform: uppercase;
            background: rgba(18, 63, 53, .06);
            padding: .35rem .8rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-label .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--orange);
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.3;
            letter-spacing: -.01em;
            margin: 0;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.1rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.3rem;
            }
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--muted);
            max-width: 680px;
            margin-top: .6rem;
            margin-bottom: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            padding: .7rem 1.3rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            border: none;
            transition: background .25s ease, color .25s ease, transform .15s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(183, 243, 74, .6);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--orange);
            color: #fff;
            box-shadow: var(--shadow-hover);
        }
        .btn-secondary {
            background: transparent;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background: rgba(18, 63, 53, .06);
            border-color: var(--orange);
            color: var(--orange);
        }
        .btn-lime {
            background: var(--lime);
            color: var(--brand-dark);
        }
        .btn-lime:hover {
            background: var(--orange);
            color: #fff;
        }
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(18, 63, 53, .25);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            padding: .3rem .7rem;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .badge-lime {
            background: rgba(183, 243, 74, .22);
            color: var(--brand-dark);
        }
        .badge-orange {
            background: rgba(255, 138, 61, .18);
            color: #b85c1f;
        }
        .badge-green {
            background: rgba(61, 214, 140, .15);
            color: var(--brand);
        }
        .header-nav {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(247, 246, 242, .96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
        }
        .nav-link {
            position: relative;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text);
            padding: .5rem .7rem;
            transition: color .2s ease;
            display: inline-block;
        }
        .nav-link:hover {
            color: var(--orange);
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: .7rem;
            right: .7rem;
            bottom: 4px;
            height: 3px;
            background: var(--brand);
            border-radius: 3px;
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            width: 760px;
            max-width: 92vw;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: 0 12px 40px rgba(18, 63, 53, .14);
            padding: 1.5rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
        }
        .mega-trigger:hover .mega-panel,
        .mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
        }
        .mega-trigger {
            position: relative;
            display: inline-block;
        }
        .mega-card {
            display: flex;
            align-items: center;
            gap: .8rem;
            background: var(--bg);
            border-radius: 12px;
            padding: .8rem 1rem;
            transition: background .2s ease;
        }
        .mega-card:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-question {
            cursor: pointer;
            padding: 1.1rem .5rem;
            font-weight: 600;
            color: var(--brand-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            color: var(--muted);
            padding: 0 .5rem;
            font-size: .95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon {
            transition: transform .3s ease;
            font-size: 1.4rem;
            color: var(--brand);
            flex-shrink: 0;
        }
        .table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid var(--border);
            background: #fff;
        }
        .data-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
            font-size: .9rem;
        }
        .data-table th {
            background: var(--brand-dark);
            color: #fff;
            font-weight: 600;
            padding: .9rem 1rem;
            text-align: left;
            white-space: nowrap;
        }
        .data-table td {
            padding: .9rem 1rem;
            border-top: 1px solid var(--border);
            color: var(--text);
        }
        .data-table tbody tr:hover td {
            background: rgba(183, 243, 74, .06);
        }
        .footer-link {
            color: rgba(255, 255, 255, .65);
            font-size: .9rem;
            transition: color .2s ease;
        }
        .footer-link:hover {
            color: var(--orange);
        }
        .mobile-menu {
            display: none;
            transition: all .3s ease;
        }
        .mobile-menu.open {
            display: block;
        }
        .hamburger {
            display: none;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .nav-desktop {
            display: none;
        }
        @media (min-width: 768px) {
            .nav-desktop {
                display: flex;
                align-items: center;
            }
            .hamburger {
                display: none;
            }
        }
        @media (max-width: 767px) {
            .hamburger {
                display: inline-flex;
            }
        }
        .rule-card {
            display: flex;
            gap: 1rem;
            padding: 1.25rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease;
        }
        .rule-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(18, 63, 53, .25);
        }
        .rule-number {
            flex-shrink: 0;
            width: 2.5rem;
            height: 2.5rem;
            border-radius: 50%;
            background: var(--brand);
            color: #fff;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1rem;
            font-family: var(--font-num);
        }
        .rule-number.alt {
            background: var(--orange);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .85rem;
            color: var(--muted);
            flex-wrap: wrap;
            margin-bottom: .8rem;
        }
        .breadcrumb a {
            color: var(--brand);
            font-weight: 500;
        }
        .breadcrumb a:hover {
            color: var(--orange);
        }
        .breadcrumb .sep {
            color: var(--border);
            user-select: none;
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: .45rem 1rem;
            border-radius: 999px;
            font-size: .85rem;
            font-weight: 500;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text);
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .filter-chip:hover,
        .filter-chip.active {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        .stat-num {
            font-family: var(--font-num);
            font-variant-numeric: tabular-nums;
            font-weight: 700;
            color: var(--brand);
            font-size: 1.6rem;
        }
        .data-highlight {
            background: rgba(183, 243, 74, .12);
            border: 1px solid rgba(183, 243, 74, .3);
            border-radius: 10px;
            padding: .75rem 1rem;
            font-size: .9rem;
            color: var(--brand-dark);
        }
        .divider-custom {
            height: 1px;
            background: var(--border);
            border: none;
            margin: 0;
        }
        @media (max-width: 767px) {
            .section-title {
                font-size: 1.4rem;
            }
            .section-space {
                padding-top: 2.5rem;
                padding-bottom: 2.5rem;
            }
            .rule-card {
                flex-direction: column;
                gap: .8rem;
            }
            .grid-cols-3-mobile {
                grid-template-columns: 1fr;
            }
        }
        .icon-box {
            width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .icon-box-green {
            background: rgba(61, 214, 140, .15);
            color: var(--brand);
        }
        .icon-box-orange {
            background: rgba(255, 138, 61, .15);
            color: #b85c1f;
        }
        .icon-box-lime {
            background: rgba(183, 243, 74, .2);
            color: var(--brand-dark);
        }

/* roulang page: category2 */
:root {
            --brand: #123F35;
            --brand-dark: #0E2A22;
            --brand-light: #3DD68C;
            --lime: #B7F34A;
            --orange: #FF8A3D;
            --bg: #F7F6F2;
            --text: #16211C;
            --muted: #5A6B63;
            --border: #DFE8E1;
            --radius-card: 16px;
            --radius-btn: 11px;
            --shadow-sm: 0 1px 2px rgba(18, 63, 53, .06);
            --shadow-md: 0 4px 12px rgba(18, 63, 53, .08);
            --shadow-hover: 0 8px 24px rgba(18, 63, 53, .12);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'Roboto Mono', 'SF Mono', monospace;
        }
        html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            margin: 0;
        }
        a { text-decoration: none; color: inherit; transition: color .2s ease; }
        img { max-width: 100%; display: block; }
        button, input, textarea, select { font-family: inherit; font-size: inherit; }

        .container-slim { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1rem; padding-right: 1rem; }
        @media (min-width: 640px) { .container-slim { padding-left: 1.5rem; padding-right: 1.5rem; } }
        @media (min-width: 1024px) { .container-slim { padding-left: 2rem; padding-right: 2rem; } }

        .section-space { padding-top: 3.5rem; padding-bottom: 3.5rem; }
        @media (min-width: 768px) { .section-space { padding-top: 4.5rem; padding-bottom: 4.5rem; } }
        @media (min-width: 1280px) { .section-space { padding-top: 5rem; padding-bottom: 5rem; } }

        .section-label {
            display: inline-flex; align-items: center; gap: .4rem;
            font-size: .8rem; font-weight: 600; letter-spacing: .08em;
            color: var(--brand); text-transform: uppercase;
            background: rgba(18, 63, 53, .06);
            padding: .35rem .8rem; border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-label .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }

        .section-title { font-size: 1.7rem; font-weight: 700; color: var(--brand-dark); line-height: 1.3; letter-spacing: -.01em; }
        @media (min-width: 768px) { .section-title { font-size: 2.1rem; } }
        @media (min-width: 1280px) { .section-title { font-size: 2.3rem; } }

        .section-subtitle { font-size: 1rem; color: var(--muted); max-width: 680px; margin-top: .6rem; }

        .btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: .7rem 1.3rem; border-radius: var(--radius-btn); font-weight: 600; font-size: .95rem; cursor: pointer; border: none; transition: background .25s ease, color .25s ease, transform .15s ease, box-shadow .25s ease, border-color .25s ease; }
        .btn:focus-visible { outline: 3px solid rgba(183, 243, 74, .6); outline-offset: 2px; }
        .btn:active { transform: translateY(1px); }
        .btn-primary { background: var(--brand); color: #fff; }
        .btn-primary:hover { background: var(--orange); color: #fff; box-shadow: var(--shadow-hover); }
        .btn-secondary { background: transparent; color: var(--brand); border: 1.5px solid var(--brand); }
        .btn-secondary:hover { background: rgba(18, 63, 53, .06); border-color: var(--orange); color: var(--orange); }
        .btn-lime { background: var(--lime); color: var(--brand-dark); }
        .btn-lime:hover { background: var(--orange); color: #fff; }

        .card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: var(--shadow-sm); transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease; }
        .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(18, 63, 53, .25); }

        .badge { display: inline-flex; align-items: center; gap: .3rem; padding: .3rem .7rem; border-radius: 999px; font-size: .75rem; font-weight: 600; letter-spacing: .02em; }
        .badge-lime { background: rgba(183, 243, 74, .22); color: var(--brand-dark); }
        .badge-orange { background: rgba(255, 138, 61, .18); color: #b85c1f; }
        .badge-green { background: rgba(61, 214, 140, .15); color: var(--brand); }
        .badge-gray { background: rgba(90, 107, 99, .1); color: var(--muted); }

        .header-nav { position: sticky; top: 0; z-index: 50; background: rgba(247, 246, 242, .96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
        .nav-link { position: relative; font-size: .95rem; font-weight: 500; color: var(--text); padding: .5rem .7rem; transition: color .2s ease; }
        .nav-link:hover { color: var(--orange); }
        .nav-link.active { color: var(--brand); font-weight: 700; }
        .nav-link.active::after { content: ''; position: absolute; left: .7rem; right: .7rem; bottom: 4px; height: 3px; background: var(--brand); border-radius: 3px; }

        .mega-panel { position: absolute; top: 100%; left: 50%; transform: translateX(-50%); width: 760px; max-width: 92vw; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: 0 12px 40px rgba(18, 63, 53, .14); padding: 1.5rem; opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s ease; }
        .mega-trigger:hover .mega-panel, .mega-trigger:focus-within .mega-panel { opacity: 1; visibility: visible; }
        .mega-card { display: flex; align-items: center; gap: .8rem; background: var(--bg); border-radius: 12px; padding: .8rem 1rem; transition: background .2s ease; }
        .mega-card:hover { background: #fff; box-shadow: var(--shadow-sm); }

        .mobile-menu { display: none; }
        .mobile-menu.open { display: block; }
        @media (min-width: 768px) {
            .mobile-menu { display: none !important; }
            .hamburger { display: none !important; }
        }
        @media (max-width: 767px) {
            .nav-desktop { display: none !important; }
            .hamburger { display: flex !important; }
        }

        .footer-link { font-size: .85rem; color: rgba(255,255,255,.65); transition: color .2s ease; }
        .footer-link:hover { color: var(--lime); }

        .faq-item { border-bottom: 1px solid var(--border); }
        .faq-question { cursor: pointer; padding: 1.1rem .5rem; font-weight: 600; color: var(--brand-dark); display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
        .faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease, padding .3s ease; color: var(--muted); padding: 0 .5rem; }
        .faq-item.open .faq-answer { max-height: 350px; padding-bottom: 1.2rem; }
        .faq-item.open .faq-icon { transform: rotate(45deg); }
        .faq-icon { transition: transform .3s ease; font-size: 1.4rem; color: var(--brand); }

        .table-wrapper { overflow-x: auto; border-radius: var(--radius-card); border: 1px solid var(--border); box-shadow: var(--shadow-sm); }
        .data-table { width: 100%; border-collapse: collapse; min-width: 720px; font-size: .875rem; }
        .data-table th { background: var(--brand-dark); color: #fff; font-weight: 600; padding: .9rem 1rem; text-align: left; white-space: nowrap; }
        .data-table td { padding: .9rem 1rem; border-top: 1px solid var(--border); white-space: nowrap; }
        .data-table tbody tr:hover { background: rgba(18, 63, 53, .03); }
        .data-table .score-highlight { font-family: var(--font-num); font-weight: 700; color: var(--brand); font-size: 1.05rem; }

        .filter-chip { display: inline-flex; align-items: center; gap: .35rem; padding: .45rem 1rem; border-radius: 999px; font-size: .82rem; font-weight: 500; cursor: pointer; border: 1px solid var(--border); background: #fff; color: var(--text); transition: all .2s ease; }
        .filter-chip:hover { border-color: var(--brand); color: var(--brand); }
        .filter-chip.active { background: var(--brand); color: #fff; border-color: var(--brand); }

        .breadcrumb { font-size: .82rem; color: var(--muted); display: flex; align-items: center; gap: .4rem; flex-wrap: wrap; }
        .breadcrumb a { color: var(--muted); transition: color .2s ease; }
        .breadcrumb a:hover { color: var(--orange); }
        .breadcrumb .sep { color: var(--border); }

        .stat-num { font-family: var(--font-num); font-weight: 700; font-size: 2rem; color: var(--brand-dark); line-height: 1; }
        @media (min-width: 768px) { .stat-num { font-size: 2.5rem; } }

        .trend-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); padding: 1.4rem 1.5rem; box-shadow: var(--shadow-sm); }
        .trend-bar { height: 6px; border-radius: 3px; background: rgba(18, 63, 53, .08); overflow: hidden; }
        .trend-bar-fill { height: 100%; border-radius: 3px; background: var(--brand-light); }

        .focus-card {
            position: relative;
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
            min-height: 280px;
        }
        .focus-card .focus-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(14,42,34,.1) 0%, rgba(14,42,34,.82) 72%);
            z-index: 1;
        }
        .focus-card .focus-content {
            position: relative;
            z-index: 2;
            color: #fff;
            padding: 1.5rem;
            display: flex;
            flex-direction: column;
            justify-content: flex-end;
            min-height: 280px;
        }
        .focus-card .focus-tag {
            position: absolute;
            top: 1rem;
            left: 1rem;
            z-index: 3;
        }

        .match-mini-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1.1rem 1.2rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease;
        }
        .match-mini-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(18,63,53,.22); }
        .team-name { font-weight: 600; color: var(--brand-dark); font-size: .95rem; }
        .match-score { font-family: var(--font-num); font-weight: 700; font-size: 1.5rem; color: var(--brand); }
        .match-status { font-size: .72rem; font-weight: 600; padding: .25rem .55rem; border-radius: 999px; }

        .tool-link-card {
            display: flex;
            align-items: center;
            gap: .9rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1rem 1.2rem;
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, border-color .25s ease;
        }
        .tool-link-card:hover { box-shadow: var(--shadow-hover); border-color: rgba(18,63,53,.25); }
        .tool-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: rgba(18, 63, 53, .07);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--brand);
        }

        .cta-panel {
            background: var(--brand-dark);
            border-radius: var(--radius-card);
            padding: 2.5rem 2rem;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        @media (min-width: 768px) { .cta-panel { padding: 3.5rem 3rem; } }
        .cta-panel::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -5%;
            width: 280px;
            height: 280px;
            border-radius: 50%;
            background: rgba(183, 243, 74, .08);
            pointer-events: none;
        }

        .guarantee-item {
            display: flex;
            align-items: flex-start;
            gap: .8rem;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 14px;
            padding: 1rem 1.2rem;
            box-shadow: var(--shadow-sm);
        }
        .guarantee-icon {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            background: rgba(61, 214, 140, .12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            color: var(--brand);
        }

        input[type="text"], input[type="email"] {
            border: 1px solid var(--border);
            border-radius: 10px;
            padding: .65rem 1rem;
            font-size: .9rem;
            color: var(--text);
            background: #fff;
            transition: border-color .2s ease, box-shadow .2s ease;
            outline: none;
        }
        input[type="text"]:focus, input[type="email"]:focus {
            border-color: var(--brand-light);
            box-shadow: 0 0 0 3px rgba(183, 243, 74, .35);
        }

/* roulang page: category5 */
:root {
            --brand: #123F35;
            --brand-dark: #0E2A22;
            --brand-light: #3DD68C;
            --lime: #B7F34A;
            --orange: #FF8A3D;
            --bg: #F7F6F2;
            --text: #16211C;
            --muted: #5A6B63;
            --border: #DFE8E1;
            --radius-card: 16px;
            --radius-btn: 11px;
            --shadow-sm: 0 1px 2px rgba(18, 63, 53, .06);
            --shadow-md: 0 4px 12px rgba(18, 63, 53, .08);
            --shadow-hover: 0 8px 24px rgba(18, 63, 53, .12);
            --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
            --font-num: 'Inter', 'Roboto Mono', 'SF Mono', monospace;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-cn);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            margin: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color .2s ease;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, textarea, select {
            font-family: inherit;
            font-size: inherit;
        }
        .container-slim {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1rem;
            padding-right: 1rem;
        }
        @media (min-width: 640px) {
            .container-slim {
                padding-left: 2rem;
                padding-right: 2rem;
            }
        }
        @media (min-width: 1024px) {
            .container-slim {
                padding-left: 3rem;
                padding-right: 3rem;
            }
        }
        .section-space {
            padding-top: 3.5rem;
            padding-bottom: 3.5rem;
        }
        @media (min-width: 768px) {
            .section-space {
                padding-top: 4rem;
                padding-bottom: 4rem;
            }
        }
        @media (min-width: 1024px) {
            .section-space {
                padding-top: 5rem;
                padding-bottom: 5rem;
            }
        }
        .section-label {
            display: inline-flex;
            align-items: center;
            gap: .4rem;
            font-size: .8rem;
            font-weight: 600;
            letter-spacing: .08em;
            color: var(--brand);
            text-transform: uppercase;
            background: rgba(18, 63, 53, .06);
            padding: .35rem .8rem;
            border-radius: 999px;
            margin-bottom: 1rem;
        }
        .section-label .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--orange);
        }
        .section-title {
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--brand-dark);
            line-height: 1.3;
            letter-spacing: -.01em;
        }
        @media (min-width: 768px) {
            .section-title {
                font-size: 2.1rem;
            }
        }
        @media (min-width: 1024px) {
            .section-title {
                font-size: 2.3rem;
            }
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--muted);
            max-width: 680px;
            margin-top: .6rem;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: .4rem;
            padding: .7rem 1.3rem;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: .95rem;
            cursor: pointer;
            border: none;
            transition: background .25s ease, color .25s ease, transform .15s ease, box-shadow .25s ease, border-color .25s ease;
        }
        .btn:focus-visible {
            outline: 3px solid rgba(183, 243, 74, .6);
            outline-offset: 2px;
        }
        .btn:active {
            transform: translateY(1px);
        }
        .btn-primary {
            background: var(--brand);
            color: #fff;
        }
        .btn-primary:hover {
            background: var(--orange);
            color: #fff;
            box-shadow: var(--shadow-hover);
        }
        .btn-secondary {
            background: transparent;
            color: var(--brand);
            border: 1.5px solid var(--brand);
        }
        .btn-secondary:hover {
            background: rgba(18, 63, 53, .06);
            border-color: var(--orange);
            color: var(--orange);
        }
        .btn-lime {
            background: var(--lime);
            color: var(--brand-dark);
        }
        .btn-lime:hover {
            background: var(--orange);
            color: #fff;
        }
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(18, 63, 53, .25);
        }
        .badge {
            display: inline-flex;
            align-items: center;
            gap: .3rem;
            padding: .3rem .7rem;
            border-radius: 999px;
            font-size: .75rem;
            font-weight: 600;
            letter-spacing: .02em;
        }
        .badge-lime {
            background: rgba(183, 243, 74, .22);
            color: var(--brand-dark);
        }
        .badge-orange {
            background: rgba(255, 138, 61, .18);
            color: #b85c1f;
        }
        .badge-green {
            background: rgba(61, 214, 140, .15);
            color: var(--brand);
        }
        .badge-gray {
            background: rgba(90, 107, 99, .12);
            color: var(--muted);
        }
        .header-nav {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(247, 246, 242, .96);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
        }
        .nav-desktop {
            display: none;
            align-items: center;
            gap: 1px;
        }
        @media (min-width: 1024px) {
            .nav-desktop {
                display: flex;
            }
        }
        .nav-link {
            position: relative;
            font-size: .95rem;
            font-weight: 500;
            color: var(--text);
            padding: .5rem .7rem;
            transition: color .2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--orange);
        }
        .nav-link.active {
            color: var(--brand);
            font-weight: 700;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            left: .7rem;
            right: .7rem;
            bottom: 4px;
            height: 3px;
            background: var(--brand);
            border-radius: 3px;
        }
        .hamburger {
            display: flex;
        }
        @media (min-width: 1024px) {
            .hamburger {
                display: none;
            }
        }
        .mobile-menu {
            display: none;
        }
        .mobile-menu.open {
            display: block;
        }
        .mega-panel {
            position: absolute;
            top: 100%;
            left: 50%;
            transform: translateX(-50%);
            width: 760px;
            max-width: 92vw;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: 0 12px 40px rgba(18, 63, 53, .14);
            padding: 1.5rem;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
            z-index: 55;
        }
        .mega-trigger {
            position: relative;
        }
        .mega-trigger:hover .mega-panel,
        .mega-trigger:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
        }
        .mega-card {
            display: flex;
            align-items: center;
            gap: .8rem;
            background: var(--bg);
            border-radius: 12px;
            padding: .8rem 1rem;
            transition: background .2s ease;
            cursor: pointer;
        }
        .mega-card:hover {
            background: #fff;
            box-shadow: var(--shadow-sm);
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-question {
            cursor: pointer;
            padding: 1.1rem .5rem;
            font-weight: 600;
            color: var(--brand-dark);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            background: transparent;
            border: none;
            width: 100%;
            text-align: left;
            font-size: 1rem;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height .4s ease, padding .3s ease;
            color: var(--muted);
            padding: 0 .5rem;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-bottom: 1.2rem;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-icon {
            transition: transform .3s ease;
            font-size: 1.4rem;
            color: var(--brand);
            flex-shrink: 0;
        }
        .footer-link {
            color: rgba(255, 255, 255, .65);
            font-size: .9rem;
            transition: color .2s ease;
        }
        .footer-link:hover {
            color: #FF8A3D;
        }
        .timeline-item {
            position: relative;
            padding-left: 2rem;
            padding-bottom: 2rem;
            border-left: 2px solid var(--border);
        }
        .timeline-item:last-child {
            border-left-color: transparent;
            padding-bottom: 0;
        }
        .timeline-dot {
            position: absolute;
            left: -8px;
            top: 6px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--brand);
            border: 2px solid #fff;
            box-shadow: 0 0 0 2px var(--border);
        }
        .timeline-dot.hot {
            background: var(--orange);
            box-shadow: 0 0 0 2px rgba(255, 138, 61, .25);
        }
        .timeline-dot.lime {
            background: var(--lime);
            box-shadow: 0 0 0 2px rgba(183, 243, 74, .3);
        }
        .filter-chip {
            display: inline-flex;
            align-items: center;
            padding: .4rem .9rem;
            border-radius: 999px;
            font-size: .85rem;
            font-weight: 500;
            border: 1px solid var(--border);
            background: #fff;
            color: var(--muted);
            cursor: pointer;
            transition: all .2s ease;
            white-space: nowrap;
        }
        .filter-chip:hover,
        .filter-chip.active {
            background: var(--brand);
            color: #fff;
            border-color: var(--brand);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: .5rem;
            font-size: .85rem;
            color: var(--muted);
            flex-wrap: wrap;
        }
        .breadcrumb a:hover {
            color: var(--orange);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .notice-card {
            border-left: 4px solid var(--orange);
            background: #fff;
            border-radius: 0 var(--radius-card) var(--radius-card) 0;
            box-shadow: var(--shadow-sm);
            padding: 1.2rem 1.5rem;
        }
        .stat-num {
            font-family: var(--font-num);
            font-variant-numeric: tabular-nums;
            font-weight: 700;
            color: var(--brand-dark);
        }

/* roulang page: category4 */
:root {
      --brand: #123F35;
      --brand-dark: #0E2A22;
      --brand-light: #3DD68C;
      --lime: #B7F34A;
      --orange: #FF8A3D;
      --bg: #F7F6F2;
      --text: #16211C;
      --muted: #5A6B63;
      --border: #DFE8E1;
      --radius-card: 16px;
      --radius-btn: 11px;
      --shadow-sm: 0 1px 2px rgba(18, 63, 53, .06);
      --shadow-md: 0 4px 12px rgba(18, 63, 53, .08);
      --shadow-hover: 0 8px 24px rgba(18, 63, 53, .12);
      --font-cn: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', system-ui, -apple-system, sans-serif;
      --font-num: 'Inter', 'Roboto Mono', 'SF Mono', monospace;
    }
    html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
    body {
      font-family: var(--font-cn);
      background: var(--bg);
      color: var(--text);
      line-height: 1.6;
      font-size: 16px;
      margin: 0;
    }
    a { text-decoration: none; color: inherit; transition: color .2s ease; }
    img { max-width: 100%; display: block; }
    button, input, textarea, select { font-family: inherit; font-size: inherit; }
    .container-slim { max-width: 1280px; margin-left: auto; margin-right: auto; padding-left: 1rem; padding-right: 1rem; }
    @media (min-width: 640px) { .container-slim { padding-left: 2rem; padding-right: 2rem; } }
    @media (min-width: 1024px) { .container-slim { padding-left: 3rem; padding-right: 3rem; } }
    .section-space { padding-top: 3.5rem; padding-bottom: 3.5rem; }
    @media (min-width: 768px) { .section-space { padding-top: 4.5rem; padding-bottom: 4.5rem; } }
    @media (min-width: 1024px) { .section-space { padding-top: 5rem; padding-bottom: 5rem; } }
    .section-label {
      display: inline-flex; align-items: center; gap: .4rem;
      font-size: .8rem; font-weight: 600; letter-spacing: .08em;
      color: var(--brand); text-transform: uppercase;
      background: rgba(18, 63, 53, .06);
      padding: .35rem .8rem; border-radius: 999px;
      margin-bottom: 1rem;
    }
    .section-label .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--orange); }
    .section-title { font-size: 1.7rem; font-weight: 700; color: var(--brand-dark); line-height: 1.3; letter-spacing: -.01em; }
    @media (min-width: 768px) { .section-title { font-size: 2.1rem; } }
    @media (min-width: 1024px) { .section-title { font-size: 2.3rem; } }
    .section-subtitle { font-size: 1rem; color: var(--muted); max-width: 680px; margin-top: .6rem; }
    .btn { display: inline-flex; align-items: center; justify-content: center; gap: .4rem; padding: .7rem 1.3rem; border-radius: var(--radius-btn); font-weight: 600; font-size: .95rem; cursor: pointer; border: none; transition: background .25s ease, color .25s ease, transform .15s ease, box-shadow .25s ease, border-color .25s ease; }
    .btn:focus-visible { outline: 3px solid rgba(183, 243, 74, .6); outline-offset: 2px; }
    .btn:active { transform: translateY(1px); }
    .btn-primary { background: var(--brand); color: #fff; }
    .btn-primary:hover { background: var(--orange); color: #fff; box-shadow: var(--shadow-hover); }
    .btn-secondary { background: transparent; color: var(--brand); border: 1.5px solid var(--brand); }
    .btn-secondary:hover { background: rgba(18, 63, 53, .06); border-color: var(--orange); color: var(--orange); }
    .btn-lime { background: var(--lime); color: var(--brand-dark); }
    .btn-lime:hover { background: var(--orange); color: #fff; }
    .card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: var(--shadow-sm); transition: box-shadow .3s ease, transform .25s ease, border-color .25s ease; }
    .card:hover { box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: rgba(18, 63, 53, .25); }
    .badge { display: inline-flex; align-items: center; gap: .3rem; padding: .3rem .7rem; border-radius: 999px; font-size: .75rem; font-weight: 600; letter-spacing: .02em; }
    .badge-lime { background: rgba(183, 243, 74, .22); color: var(--brand-dark); }
    .badge-orange { background: rgba(255, 138, 61, .18); color: #b85c1f; }
    .badge-green { background: rgba(61, 214, 140, .15); color: var(--brand); }
    .header-nav { position: sticky; top: 0; z-index: 50; background: rgba(247, 246, 242, .96); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); }
    .nav-desktop { display: none; align-items: center; gap: .25rem; }
    @media (min-width: 768px) { .nav-desktop { display: flex; } .hamburger { display: none !important; } }
    .hamburger { display: inline-flex; }
    .nav-link { position: relative; font-size: .95rem; font-weight: 500; color: var(--text); padding: .5rem .7rem; transition: color .2s ease; }
    .nav-link:hover { color: var(--orange); }
    .nav-link.active { color: var(--brand); font-weight: 700; }
    .nav-link.active::after { content: ''; position: absolute; left: .7rem; right: .7rem; bottom: 4px; height: 3px; background: var(--brand); border-radius: 3px; }
    .mega-trigger { position: relative; }
    .mega-panel { position: absolute; top: 100%; left: 50%; transform: translateX(-50%) translateY(8px); width: 760px; max-width: 92vw; background: #fff; border: 1px solid var(--border); border-radius: var(--radius-card); box-shadow: 0 12px 40px rgba(18, 63, 53, .14); padding: 1.5rem; opacity: 0; visibility: hidden; transition: opacity .3s ease, visibility .3s ease, transform .3s ease; }
    .mega-trigger:hover .mega-panel, .mega-trigger:focus-within .mega-panel { opacity: 1; visibility: visible; transform: translateX(-50%) translateY(0); }
    .mega-card { display: flex; align-items: center; gap: .8rem; background: var(--bg); border-radius: 12px; padding: .8rem 1rem; transition: background .2s ease; }
    .mega-card:hover { background: #fff; box-shadow: var(--shadow-sm); }
    .mobile-menu { display: none; }
    .mobile-menu.open { display: block; }
    .faq-item { border-bottom: 1px solid var(--border); }
    .faq-question { cursor: pointer; padding: 1.1rem .5rem; font-weight: 600; color: var(--brand-dark); display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
    .faq-answer { max-height: 0; overflow: hidden; transition: max-height .4s ease, padding .3s ease; color: var(--muted); padding: 0 .5rem; }
    .faq-item.open .faq-answer { max-height: 300px; padding-bottom: 1.2rem; }
    .faq-item.open .faq-icon { transform: rotate(45deg); }
    .faq-icon { transition: transform .3s ease; font-size: 1.4rem; color: var(--brand); }
    .table-wrapper { overflow-x: auto; border-radius: var(--radius-card); border: 1px solid var(--border); background: #fff; }
    .data-table { width: 100%; border-collapse: collapse; min-width: 720px; font-size: .9rem; }
    .data-table th { background: var(--brand-dark); color: #fff; font-weight: 600; padding: .9rem 1rem; text-align: left; white-space: nowrap; }
    .data-table td { padding: .9rem 1rem; border-top: 1px solid var(--border); color: var(--text); }
    .data-table tr:hover td { background: rgba(18, 63, 53, .03); }
    .filter-btn { padding: .55rem 1rem; border-radius: 999px; border: 1px solid var(--border); background: #fff; font-weight: 500; color: var(--muted); transition: background .2s ease, color .2s ease, border-color .2s ease; cursor: pointer; }
    .filter-btn:hover { border-color: var(--brand); color: var(--brand); }
    .filter-btn.active { background: var(--brand); color: #fff; border-color: var(--brand); }
    .tool-card { transition: opacity .25s ease, transform .25s ease; }
    .tool-card.hide { display: none; }
    .footer-link { color: rgba(255,255,255,.72); transition: color .2s ease; }
    .footer-link:hover { color: var(--orange); }
    input, textarea, select { border: 1px solid var(--border); border-radius: 10px; padding: .65rem .9rem; background: #fff; color: var(--text); }
    input:focus, textarea:focus, select:focus { outline: none; border-color: var(--brand-light); box-shadow: 0 0 0 3px rgba(183, 243, 74, .4); }