/* roulang page: index */
:root {
            --primary: #00B884;
            --primary-dark: #00996F;
            --primary-soft: #E6F8F2;
            --accent: #FF8A2A;
            --accent-soft: #FFF1E6;
            --ink: #111827;
            --text: #374151;
            --muted: #6B7280;
            --line: #E5E7EB;
            --line-strong: #D1D5DB;
            --bg: #F5F7FA;
            --white: #FFFFFF;
            --dark: #071C18;
            --dark-2: #0B2A24;
            --radius-sm: 10px;
            --radius-md: 14px;
            --radius-lg: 18px;
            --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
            --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.12);
            --container: 1220px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.75;
            overflow-x: hidden;
        }

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

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

        button,
        input {
            font: inherit;
        }

        button {
            cursor: pointer;
            border: 0;
            background: transparent;
        }

        :focus-visible {
            outline: 3px solid rgba(0, 184, 132, 0.28);
            outline-offset: 3px;
        }

        .container {
            width: min(var(--container), calc(100% - 64px));
            margin: 0 auto;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.94);
            border-bottom: 1px solid var(--line);
            backdrop-filter: blur(14px);
        }

        .nav-wrap {
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }

        .brand {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-weight: 800;
            color: var(--ink);
            white-space: nowrap;
        }

        .brand-mark {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--dark);
            position: relative;
            box-shadow: inset 0 0 0 2px rgba(0, 184, 132, 0.35);
        }

        .brand-mark::before {
            content: "";
            position: absolute;
            inset: 10px 9px 10px 13px;
            background: var(--primary);
            clip-path: polygon(0 0, 100% 50%, 0 100%);
        }

        .brand-mark::after {
            content: "";
            position: absolute;
            width: 18px;
            height: 18px;
            right: -5px;
            bottom: -5px;
            border-radius: 50%;
            background: var(--accent);
            border: 4px solid var(--white);
        }

        .brand-text {
            font-size: 18px;
            letter-spacing: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-links a {
            position: relative;
            padding: 10px 12px;
            border-radius: 999px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            transition: color .2s ease, background .2s ease;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--primary-dark);
            background: var(--primary-soft);
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .menu-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border: 1px solid var(--line);
            border-radius: 12px;
            background: var(--white);
        }

        .menu-toggle span {
            display: block;
            width: 18px;
            height: 2px;
            margin: 4px auto;
            background: var(--ink);
            border-radius: 2px;
            transition: transform .2s ease, opacity .2s ease;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 44px;
            padding: 0 18px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            border: 1px solid transparent;
            transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
            white-space: nowrap;
        }

        .btn-primary {
            color: var(--white);
            background: var(--primary);
            box-shadow: 0 10px 22px rgba(0, 184, 132, 0.22);
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 14px 28px rgba(0, 184, 132, 0.28);
        }

        .btn-secondary {
            color: var(--ink);
            background: var(--white);
            border-color: var(--line-strong);
        }

        .btn-secondary:hover {
            color: var(--primary-dark);
            border-color: rgba(0, 184, 132, 0.55);
            transform: translateY(-1px);
        }

        .btn-dark {
            color: var(--white);
            background: var(--dark);
        }

        .btn-dark:hover {
            background: var(--dark-2);
            transform: translateY(-1px);
        }

        .hero {
            position: relative;
            padding: 58px 0 34px;
            background:
                linear-gradient(135deg, rgba(0, 184, 132, 0.09), rgba(255, 138, 42, 0.07)),
                radial-gradient(circle at 15% 20%, rgba(0, 184, 132, 0.18), transparent 34%),
                var(--bg);
            border-bottom: 1px solid var(--line);
        }

        .hero-layout {
            display: grid;
            grid-template-columns: minmax(0, 6fr) minmax(360px, 5fr);
            gap: 34px;
            align-items: center;
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 7px 12px;
            border-radius: 999px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 800;
            margin-bottom: 18px;
        }

        .eyebrow::before {
            content: "";
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--primary);
            box-shadow: 0 0 0 5px rgba(0, 184, 132, 0.14);
        }

        h1 {
            max-width: 760px;
            font-size: clamp(30px, 4vw, 50px);
            line-height: 1.18;
            color: var(--ink);
            font-weight: 800;
            letter-spacing: 0;
        }

        .hero-lead {
            margin-top: 18px;
            max-width: 680px;
            font-size: 18px;
            color: var(--text);
        }

        .hero-points {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin: 22px 0 28px;
        }

        .point-pill {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 8px 12px;
            border-radius: 999px;
            background: var(--white);
            border: 1px solid var(--line);
            color: var(--text);
            font-size: 14px;
            font-weight: 650;
            box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
        }

        .point-pill i {
            width: 9px;
            height: 9px;
            border-radius: 50%;
            background: var(--accent);
        }

        .hero-cta {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .hero-panel {
            background: var(--dark);
            border-radius: 24px;
            padding: 22px;
            color: var(--white);
            box-shadow: 0 22px 50px rgba(7, 28, 24, 0.22);
            overflow: hidden;
            position: relative;
        }

        .hero-panel::before {
            content: "";
            position: absolute;
            inset: 0;
            background:
                linear-gradient(90deg, rgba(255, 255, 255, 0.07) 1px, transparent 1px),
                linear-gradient(0deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
            background-size: 38px 38px;
            opacity: .45;
        }

        .panel-inner {
            position: relative;
            z-index: 1;
        }

        .panel-top {
            display: flex;
            justify-content: space-between;
            gap: 16px;
            align-items: flex-start;
            margin-bottom: 18px;
        }

        .panel-title {
            font-size: 20px;
            font-weight: 800;
        }

        .status-badge {
            display: inline-flex;
            padding: 6px 10px;
            border-radius: 999px;
            color: #05352B;
            background: var(--primary);
            font-size: 13px;
            font-weight: 800;
            white-space: nowrap;
        }

        .entry-box {
            border-radius: 18px;
            padding: 18px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.16);
            margin-bottom: 14px;
        }

        .entry-row {
            display: flex;
            justify-content: space-between;
            gap: 18px;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .entry-row:last-child {
            border-bottom: 0;
        }

        .entry-label {
            color: rgba(255, 255, 255, 0.68);
            font-size: 14px;
        }

        .entry-value {
            font-weight: 800;
            text-align: right;
        }

        .mini-news {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .mini-card {
            padding: 14px;
            border-radius: 16px;
            background: var(--white);
            color: var(--ink);
        }

        .mini-card strong {
            display: block;
            font-size: 15px;
            margin-bottom: 4px;
        }

        .mini-card span {
            display: block;
            color: var(--muted);
            font-size: 13px;
            line-height: 1.55;
        }

        main {
            background: var(--bg);
        }

        .section {
            padding: 82px 0;
        }

        .section.tight {
            padding-top: 56px;
        }

        .section-white {
            background: var(--white);
        }

        .section-head {
            display: flex;
            justify-content: space-between;
            gap: 24px;
            align-items: flex-end;
            margin-bottom: 28px;
        }

        .section-kicker {
            color: var(--primary-dark);
            font-size: 14px;
            font-weight: 800;
            margin-bottom: 6px;
        }

        h2 {
            font-size: clamp(24px, 3vw, 34px);
            line-height: 1.28;
            color: var(--ink);
            font-weight: 800;
            letter-spacing: 0;
        }

        .section-desc {
            max-width: 560px;
            color: var(--muted);
            font-size: 15px;
        }

        .quick-grid {
            display: grid;
            grid-template-columns: 1.2fr .9fr .9fr;
            gap: 18px;
        }

        .quick-card {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow);
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }

        .quick-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 184, 132, 0.38);
        }

        .quick-card.featured {
            background: linear-gradient(135deg, var(--dark), #113A32);
            color: var(--white);
            border-color: transparent;
        }

        .quick-card.featured h3,
        .quick-card.featured p {
            color: var(--white);
        }

        .badge,
        .tag {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 26px;
            padding: 0 10px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 800;
            color: var(--primary-dark);
            background: var(--primary-soft);
        }

        .tag.orange {
            color: #A14B08;
            background: var(--accent-soft);
        }

        .tag.dark {
            color: var(--white);
            background: rgba(255, 255, 255, 0.16);
        }

        .quick-card h3 {
            margin-top: 14px;
            font-size: 21px;
            line-height: 1.35;
            color: var(--ink);
        }

        .quick-card p {
            margin-top: 10px;
            font-size: 15px;
            color: var(--muted);
        }

        .news-layout {
            display: grid;
            grid-template-columns: minmax(0, 5fr) minmax(0, 4fr);
            gap: 22px;
            align-items: stretch;
        }

        .news-feature {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: 22px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }

        .news-visual {
            min-height: 220px;
            padding: 26px;
            background:
                linear-gradient(135deg, rgba(0, 184, 132, 0.86), rgba(7, 28, 24, 0.96)),
                repeating-linear-gradient(90deg, transparent 0 28px, rgba(255, 255, 255, 0.12) 28px 29px);
            color: var(--white);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .visual-score {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 10px;
            margin-top: 26px;
        }

        .visual-score span {
            display: block;
            padding: 12px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.13);
            font-weight: 800;
            text-align: center;
        }

        .news-feature-body {
            padding: 24px;
        }

        .news-feature h3 {
            font-size: 24px;
            line-height: 1.35;
            color: var(--ink);
            margin: 12px 0 10px;
        }

        .news-feature p,
        .news-item p {
            color: var(--muted);
            font-size: 15px;
        }

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

        .news-list {
            display: grid;
            gap: 14px;
        }

        .news-item {
            display: grid;
            grid-template-columns: 112px 1fr;
            gap: 16px;
            align-items: start;
            padding: 18px;
            border-radius: var(--radius-lg);
            background: var(--white);
            border: 1px solid var(--line);
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
        }

        .news-item:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow);
            border-color: rgba(0, 184, 132, 0.42);
        }

        .date-block {
            min-height: 92px;
            border-radius: 16px;
            background: var(--bg);
            border: 1px solid var(--line);
            display: flex;
            flex-direction: column;
            justify-content: center;
            text-align: center;
            color: var(--ink);
            font-weight: 800;
        }

        .date-block span {
            color: var(--muted);
            font-size: 13px;
            font-weight: 700;
        }

        .news-item h3 {
            font-size: 18px;
            line-height: 1.45;
            color: var(--ink);
            margin: 8px 0 6px;
        }

        .download-panel {
            display: grid;
            grid-template-columns: minmax(0, 7fr) minmax(280px, 3fr);
            gap: 22px;
            align-items: stretch;
            padding: 28px;
            border-radius: 26px;
            background: var(--dark);
            color: var(--white);
            box-shadow: 0 22px 46px rgba(7, 28, 24, 0.18);
        }

        .download-main h2 {
            color: var(--white);
            margin-top: 10px;
        }

        .download-main p {
            max-width: 720px;
            color: rgba(255, 255, 255, 0.76);
            margin-top: 12px;
        }

        .segment {
            display: inline-flex;
            flex-wrap: wrap;
            gap: 8px;
            padding: 6px;
            border-radius: 14px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
            margin-top: 22px;
        }

        .segment button {
            min-height: 38px;
            padding: 0 14px;
            border-radius: 10px;
            color: rgba(255, 255, 255, 0.78);
            font-weight: 800;
            transition: background .2s ease, color .2s ease;
        }

        .segment button.active,
        .segment button:hover {
            color: #06352B;
            background: var(--primary);
        }

        .version-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            margin: 22px 0;
        }

        .version-card {
            padding: 16px;
            border-radius: 16px;
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.14);
        }

        .version-card span {
            color: rgba(255, 255, 255, 0.62);
            font-size: 13px;
        }

        .version-card strong {
            display: block;
            margin-top: 4px;
            font-size: 18px;
            color: var(--white);
        }

        .install-list {
            display: grid;
            gap: 10px;
            margin-top: 18px;
            list-style: none;
        }

        .install-list li {
            display: flex;
            gap: 10px;
            color: rgba(255, 255, 255, 0.76);
            font-size: 15px;
        }

        .install-list li::before {
            content: "";
            width: 8px;
            height: 8px;
            margin-top: 10px;
            border-radius: 50%;
            background: var(--accent);
            flex: 0 0 auto;
        }

        .qr-card {
            background: var(--white);
            color: var(--ink);
            border-radius: 22px;
            padding: 22px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            gap: 18px;
        }

        .qr-box {
            width: 100%;
            aspect-ratio: 1 / 1;
            border-radius: 18px;
            background:
                linear-gradient(90deg, var(--line) 12px, transparent 12px) 0 0 / 32px 32px,
                linear-gradient(var(--line) 12px, transparent 12px) 0 0 / 32px 32px,
                var(--bg);
            border: 1px solid var(--line);
            position: relative;
        }

        .qr-box::after {
            content: "扫码下载";
            position: absolute;
            inset: 50% auto auto 50%;
            transform: translate(-50%, -50%);
            width: 92px;
            height: 92px;
            border-radius: 16px;
            display: grid;
            place-items: center;
            color: var(--primary-dark);
            font-weight: 800;
            background: var(--white);
            box-shadow: var(--shadow);
        }

        .qr-card p {
            color: var(--muted);
            font-size: 14px;
        }

        .steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            counter-reset: step;
        }

        .step-card {
            position: relative;
            padding: 24px;
            border-radius: var(--radius-lg);
            background: var(--white);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            counter-increment: step;
        }

        .step-card::before {
            content: counter(step);
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: grid;
            place-items: center;
            background: var(--primary);
            color: var(--white);
            font-weight: 900;
            margin-bottom: 14px;
        }

        .step-card h3 {
            color: var(--ink);
            font-size: 19px;
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--muted);
            font-size: 15px;
        }

        .topic-grid {
            display: grid;
            grid-template-columns: 1.15fr .85fr;
            gap: 18px;
        }

        .topic-card {
            min-height: 210px;
            padding: 24px;
            border-radius: 22px;
            background: var(--white);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
            transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .topic-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
            border-color: rgba(0, 184, 132, 0.45);
        }

        .topic-card h3 {
            color: var(--ink);
            font-size: 22px;
            line-height: 1.35;
            margin: 14px 0 8px;
        }

        .topic-card p {
            color: var(--muted);
            font-size: 15px;
        }

        .topic-card.large {
            grid-row: span 2;
            background:
                linear-gradient(135deg, rgba(0, 184, 132, 0.12), rgba(255, 255, 255, 0.94)),
                var(--white);
        }

        .topic-foot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            margin-top: 18px;
            font-size: 14px;
            color: var(--muted);
        }

        .arrow {
            width: 36px;
            height: 36px;
            border-radius: 12px;
            display: grid;
            place-items: center;
            background: var(--primary-soft);
            color: var(--primary-dark);
            font-weight: 900;
        }

        .update-timeline {
            background: var(--white);
            border: 1px solid var(--line);
            border-radius: 22px;
            padding: 12px;
            box-shadow: var(--shadow);
        }

        .update-row {
            display: grid;
            grid-template-columns: 150px 1fr;
            gap: 20px;
            padding: 20px;
            border-bottom: 1px solid var(--line);
        }

        .update-row:last-child {
            border-bottom: 0;
        }

        .update-date {
            color: var(--primary-dark);
            font-weight: 900;
        }

        .update-row h3 {
            color: var(--ink);
            font-size: 19px;
            margin-bottom: 6px;
        }

        .update-row p {
            color: var(--muted);
            font-size: 15px;
        }

        .proof-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 18px;
        }

        .proof-card {
            padding: 24px;
            border-radius: var(--radius-lg);
            background: var(--white);
            border: 1px solid var(--line);
            box-shadow: var(--shadow);
        }

        .proof-card strong {
            display: block;
            color: var(--ink);
            font-size: 30px;
            line-height: 1.2;
            margin-bottom: 8px;
        }

        .proof-card p {
            color: var(--muted);
            font-size: 15px;
        }

        .faq-list {
            display: grid;
            gap: 14px;
        }

        .faq-item {
            border: 1px solid var(--line);
            border-radius: var(--radius-lg);
            background: var(--white);
            overflow: hidden;
            box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
        }

        .faq-question {
            width: 100%;
            min-height: 62px;
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            color: var(--ink);
            font-size: 17px;
            font-weight: 800;
            text-align: left;
        }

        .faq-question span {
            flex: 1;
        }

        .faq-icon {
            width: 28px;
            height: 28px;
            border-radius: 9px;
            background: var(--primary-soft);
            color: var(--primary-dark);
            display: grid;
            place-items: center;
            font-weight: 900;
            transition: transform .2s ease;
            flex: 0 0 auto;
        }

        .faq-answer {
            display: none;
            padding: 0 22px 20px;
            color: var(--muted);
            font-size: 15px;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }

        .cta-band {
            padding: 44px;
            border-radius: 28px;
            color: var(--white);
            background:
                linear-gradient(135deg, rgba(0, 184, 132, 0.88), rgba(7, 28, 24, 0.96)),
                var(--dark);
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 24px;
            align-items: center;
            box-shadow: 0 22px 48px rgba(7, 28, 24, 0.18);
        }

        .cta-band h2 {
            color: var(--white);
        }

        .cta-band p {
            margin-top: 8px;
            color: rgba(255, 255, 255, 0.78);
            max-width: 720px;
        }

        .cta-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .site-footer {
            background: #0B1614;
            color: rgba(255, 255, 255, 0.72);
            padding: 48px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 30px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.12);
        }

        .footer-brand {
            color: var(--white);
            font-size: 20px;
            font-weight: 900;
            margin-bottom: 12px;
        }

        .footer-grid p {
            max-width: 460px;
            font-size: 14px;
            color: rgba(255, 255, 255, 0.66);
        }

        .footer-title {
            color: var(--white);
            font-weight: 800;
            margin-bottom: 12px;
        }

        .footer-links {
            display: grid;
            gap: 8px;
        }

        .footer-links a {
            font-size: 14px;
            transition: color .2s ease;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .copyright {
            margin-top: 22px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.56);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
        }

        .mobile-download {
            display: none;
            position: fixed;
            left: 16px;
            right: 16px;
            bottom: 14px;
            z-index: 45;
            box-shadow: 0 16px 32px rgba(0, 184, 132, 0.28);
        }

        @media (max-width: 1024px) {
            .container {
                width: min(var(--container), calc(100% - 48px));
            }

            .hero-layout,
            .news-layout,
            .download-panel,
            .topic-grid {
                grid-template-columns: 1fr;
            }

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

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

            .topic-card.large {
                grid-row: auto;
            }

            .nav-links {
                gap: 2px;
            }

            .nav-links a {
                padding: 9px 9px;
                font-size: 14px;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-bottom: 74px;
            }

            .container {
                width: calc(100% - 32px);
            }

            .nav-wrap {
                height: 62px;
            }

            .brand-text {
                font-size: 16px;
            }

            .brand-mark {
                width: 36px;
                height: 36px;
            }

            .menu-toggle {
                display: block;
            }

            .menu-toggle.active span:nth-child(1) {
                transform: translateY(6px) rotate(45deg);
            }

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

            .menu-toggle.active span:nth-child(3) {
                transform: translateY(-6px) rotate(-45deg);
            }

            .nav-links {
                position: absolute;
                left: 16px;
                right: 16px;
                top: 70px;
                display: none;
                flex-direction: column;
                align-items: stretch;
                padding: 12px;
                background: var(--white);
                border: 1px solid var(--line);
                border-radius: 18px;
                box-shadow: var(--shadow-hover);
            }

            .nav-links.open {
                display: flex;
            }

            .nav-links a {
                padding: 13px 14px;
            }

            .nav-actions .btn {
                display: none;
            }

            .hero {
                padding: 42px 0 28px;
            }

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

            .hero-cta .btn,
            .download-main .btn,
            .cta-actions .btn {
                width: 100%;
            }

            .mini-news,
            .version-grid,
            .quick-grid,
            .proof-grid {
                grid-template-columns: 1fr;
            }

            .section {
                padding: 54px 0;
            }

            .section-head {
                display: block;
            }

            .section-desc {
                margin-top: 8px;
            }

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

            .date-block {
                min-height: auto;
                padding: 10px;
                flex-direction: row;
                justify-content: flex-start;
                gap: 8px;
            }

            .download-panel {
                padding: 22px;
                border-radius: 22px;
            }

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

            .update-row {
                grid-template-columns: 1fr;
                gap: 8px;
                padding: 18px;
            }

            .cta-band {
                grid-template-columns: 1fr;
                padding: 26px;
                border-radius: 22px;
            }

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

            .mobile-download {
                display: inline-flex;
            }
        }

        @media (max-width: 520px) {
            .container {
                width: calc(100% - 28px);
            }

            h1 {
                font-size: 31px;
            }

            .hero-panel {
                padding: 16px;
                border-radius: 20px;
            }

            .panel-top {
                display: block;
            }

            .status-badge {
                margin-top: 10px;
            }

            .entry-row {
                display: block;
            }

            .entry-value {
                text-align: left;
                margin-top: 3px;
            }

            .section {
                padding: 46px 0;
            }

            .quick-card,
            .step-card,
            .topic-card,
            .proof-card {
                padding: 20px;
            }

            .visual-score {
                grid-template-columns: 1fr;
            }

            .segment {
                width: 100%;
            }

            .segment button {
                flex: 1 1 30%;
                padding: 0 10px;
            }

            .faq-question {
                padding: 16px 18px;
                font-size: 16px;
            }

            .faq-answer {
                padding: 0 18px 18px;
            }

            .copyright {
                display: block;
            }

            .copyright span {
                display: block;
                margin-top: 8px;
            }
        }

/* roulang page: category1 */
:root {
      --primary: #00B884;
      --primary-dark: #00996F;
      --primary-soft: #E6F8F2;
      --accent: #FF8A2A;
      --accent-soft: #FFF1E6;
      --ink: #111827;
      --text: #374151;
      --muted: #6B7280;
      --line: #E5E7EB;
      --line-strong: #D1D5DB;
      --bg: #F5F7FA;
      --white: #FFFFFF;
      --dark: #071C18;
      --dark-2: #0B2A24;
      --radius-sm: 10px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.12);
      --container: 1220px;
    }
    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.75;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button,
    input {
      font: inherit;
    }
    button {
      cursor: pointer;
      border: 0;
      background: transparent;
    }
    p,
    h1,
    h2,
    h3,
    h4 {
      margin-top: 0;
    }
    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }
    .nav-wrap {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--ink);
      white-space: nowrap;
    }
    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--dark);
      position: relative;
      box-shadow: inset 0 0 0 2px rgba(0, 184, 132, 0.35);
      flex: 0 0 auto;
    }
    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px 9px 10px 13px;
      background: var(--primary);
      clip-path: polygon(0 0, 100% 50%, 0 100%);
    }
    .brand-mark::after {
      content: "";
      position: absolute;
      width: 18px;
      height: 18px;
      right: -5px;
      bottom: -5px;
      border-radius: 50%;
      background: var(--accent);
      border: 4px solid var(--white);
    }
    .brand-text {
      font-size: 18px;
      letter-spacing: 0;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .nav-links a {
      position: relative;
      padding: 10px 12px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      transition: color .2s ease, background .2s ease;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: var(--white);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 4px auto;
      background: var(--ink);
      border-radius: 2px;
      transition: transform .2s ease, opacity .2s ease;
    }
    .menu-toggle.is-open span:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }
    .menu-toggle.is-open span:nth-child(2) {
      opacity: 0;
    }
    .menu-toggle.is-open span:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      white-space: nowrap;
    }
    .btn:focus-visible,
    .nav-links a:focus-visible,
    .menu-toggle:focus-visible,
    input:focus-visible {
      outline: 3px solid rgba(0, 184, 132, 0.22);
      outline-offset: 3px;
    }
    .btn-primary {
      color: var(--white);
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(0, 184, 132, 0.22);
    }
    .btn-primary:hover {
      color: var(--white);
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 14px 28px rgba(0, 184, 132, 0.28);
    }
    .btn-secondary {
      color: var(--ink);
      background: var(--white);
      border-color: var(--line-strong);
    }
    .btn-secondary:hover {
      color: var(--primary-dark);
      border-color: rgba(0, 184, 132, 0.55);
      transform: translateY(-1px);
    }
    .btn-dark {
      color: var(--white);
      background: var(--dark);
    }
    .btn-dark:hover {
      color: var(--white);
      background: var(--dark-2);
      transform: translateY(-1px);
    }
    .section {
      padding: 82px 0;
    }
    .section-tight {
      padding: 64px 0;
    }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 28px;
    }
    .section-kicker {
      display: inline-flex;
      align-items: center;
      padding: 6px 12px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .section-title {
      color: var(--ink);
      font-size: 32px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .section-desc {
      max-width: 720px;
      color: var(--muted);
      font-size: 16px;
      margin-bottom: 0;
    }
    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 6px 10px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      line-height: 1;
    }
    .badge-green {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }
    .badge-orange {
      color: #B95808;
      background: var(--accent-soft);
    }
    .badge-dark {
      color: var(--white);
      background: var(--dark);
    }
    .page-hero {
      position: relative;
      padding: 46px 0 54px;
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.11), rgba(255, 138, 42, 0.07)),
        linear-gradient(180deg, var(--white), var(--bg));
      border-bottom: 1px solid var(--line);
      overflow: hidden;
    }
    .page-hero::before {
      content: "";
      position: absolute;
      left: 0;
      right: 0;
      top: 0;
      height: 100%;
      background-image:
        linear-gradient(rgba(17, 24, 39, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 24, 39, 0.04) 1px, transparent 1px);
      background-size: 34px 34px;
      pointer-events: none;
    }
    .page-hero-inner {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 7fr) minmax(320px, 4fr);
      gap: 34px;
      align-items: center;
    }
    .breadcrumb {
      display: flex;
      gap: 8px;
      align-items: center;
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 14px;
    }
    .breadcrumb a {
      color: var(--primary-dark);
      font-weight: 700;
    }
    .breadcrumb span {
      color: var(--muted);
    }
    .page-hero h1 {
      color: var(--ink);
      font-size: 46px;
      line-height: 1.18;
      font-weight: 800;
      margin-bottom: 16px;
      letter-spacing: 0;
    }
    .page-hero p {
      max-width: 760px;
      color: var(--text);
      font-size: 17px;
      margin-bottom: 24px;
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
    }
    .notice-panel {
      background: var(--dark);
      color: var(--white);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow);
      position: relative;
      overflow: hidden;
    }
    .notice-panel::after {
      content: "";
      position: absolute;
      width: 140px;
      height: 140px;
      right: -50px;
      top: -60px;
      border: 26px solid rgba(0, 184, 132, 0.18);
      border-radius: 50%;
    }
    .notice-panel h2 {
      position: relative;
      font-size: 22px;
      line-height: 1.35;
      font-weight: 800;
      margin-bottom: 18px;
    }
    .status-list {
      position: relative;
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .status-list li {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding: 13px 0;
      border-bottom: 1px solid rgba(255, 255, 255, 0.13);
      color: rgba(255, 255, 255, 0.82);
      font-size: 14px;
    }
    .status-list li:last-child {
      border-bottom: 0;
    }
    .status-list strong {
      color: var(--white);
      font-weight: 800;
      white-space: nowrap;
    }
    .main-grid {
      display: grid;
      grid-template-columns: minmax(0, 8fr) minmax(310px, 3fr);
      gap: 28px;
      align-items: start;
    }
    .timeline {
      position: relative;
      display: grid;
      gap: 18px;
    }
    .news-item {
      display: grid;
      grid-template-columns: 118px minmax(0, 1fr);
      gap: 22px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .news-item:hover {
      transform: translateY(-2px);
      border-color: rgba(0, 184, 132, 0.4);
      box-shadow: var(--shadow-hover);
    }
    .date-card {
      min-height: 104px;
      border-radius: var(--radius-md);
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      font-weight: 800;
    }
    .date-card .day {
      color: var(--ink);
      font-size: 30px;
      line-height: 1;
      margin-bottom: 8px;
    }
    .date-card .month {
      font-size: 14px;
    }
    .news-meta {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 10px;
      margin-bottom: 10px;
    }
    .news-item h2,
    .news-item h3 {
      color: var(--ink);
      font-size: 22px;
      line-height: 1.4;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .news-item p {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
      margin-bottom: 16px;
    }
    .news-detail-list {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 10px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .news-detail-list li {
      position: relative;
      padding-left: 18px;
      color: var(--text);
      font-size: 14px;
    }
    .news-detail-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 11px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
    }
    .side-stack {
      display: grid;
      gap: 18px;
      position: sticky;
      top: 92px;
    }
    .side-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 22px;
      box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
    }
    .side-card h2,
    .side-card h3 {
      color: var(--ink);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .download-mini {
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.12), rgba(255, 138, 42, 0.08)),
        var(--white);
    }
    .version-row {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 10px 0;
      border-bottom: 1px solid var(--line);
      color: var(--muted);
      font-size: 14px;
    }
    .version-row strong {
      color: var(--ink);
    }
    .mini-actions {
      display: grid;
      gap: 10px;
      margin-top: 16px;
    }
    .popular-list {
      display: grid;
      gap: 14px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .popular-list a {
      display: block;
      padding: 12px 0;
      border-bottom: 1px solid var(--line);
      transition: color .2s ease;
    }
    .popular-list a:hover {
      color: var(--primary-dark);
    }
    .popular-list li:last-child a {
      border-bottom: 0;
      padding-bottom: 0;
    }
    .popular-title {
      color: var(--ink);
      font-size: 15px;
      font-weight: 800;
      line-height: 1.55;
      margin-bottom: 4px;
    }
    .popular-note {
      color: var(--muted);
      font-size: 13px;
    }
    .search-box {
      display: flex;
      gap: 8px;
      margin-top: 14px;
    }
    .search-box input {
      width: 100%;
      height: 46px;
      border-radius: 12px;
      border: 1px solid var(--line-strong);
      padding: 0 14px;
      color: var(--ink);
      background: var(--white);
      transition: border-color .2s ease, box-shadow .2s ease;
    }
    .search-box input:focus {
      border-color: var(--primary);
      box-shadow: 0 0 0 4px rgba(0, 184, 132, 0.12);
      outline: 0;
    }
    .highlight-band {
      background: var(--white);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .update-cards {
      display: grid;
      grid-template-columns: 1.1fr 1fr 1fr;
      gap: 18px;
    }
    .update-card {
      min-height: 210px;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 24px;
      background: var(--white);
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .update-card.featured {
      background: var(--dark);
      color: rgba(255, 255, 255, 0.82);
      border-color: var(--dark);
    }
    .update-card:hover {
      transform: translateY(-2px);
      border-color: rgba(0, 184, 132, 0.42);
      box-shadow: var(--shadow-hover);
    }
    .update-card h3 {
      color: var(--ink);
      font-size: 22px;
      font-weight: 800;
      line-height: 1.35;
      margin: 14px 0 10px;
    }
    .update-card.featured h3 {
      color: var(--white);
    }
    .update-card p {
      color: var(--muted);
      font-size: 15px;
      margin-bottom: 0;
    }
    .update-card.featured p {
      color: rgba(255, 255, 255, 0.74);
    }
    .process-wrap {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }
    .process-item {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 22px;
      position: relative;
      overflow: hidden;
      transition: transform .2s ease, box-shadow .2s ease;
    }
    .process-item:hover {
      transform: translateY(-2px);
      box-shadow: var(--shadow);
    }
    .process-num {
      width: 38px;
      height: 38px;
      border-radius: 12px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary);
      color: var(--white);
      font-weight: 800;
      margin-bottom: 16px;
    }
    .process-item h3 {
      color: var(--ink);
      font-size: 19px;
      line-height: 1.35;
      font-weight: 800;
      margin-bottom: 8px;
    }
    .process-item p {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
      margin-bottom: 0;
    }
    .faq-grid {
      display: grid;
      grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
      gap: 30px;
      align-items: start;
    }
    .faq-list {
      display: grid;
      gap: 14px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      overflow: hidden;
      box-shadow: 0 6px 18px rgba(15, 23, 42, 0.04);
    }
    .faq-question {
      width: 100%;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      padding: 18px 20px;
      color: var(--ink);
      font-size: 16px;
      font-weight: 800;
      text-align: left;
    }
    .faq-question::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 50%;
      background: var(--primary-soft);
      color: var(--primary-dark);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      flex: 0 0 auto;
      font-weight: 800;
    }
    .faq-item.is-open .faq-question::after {
      content: "−";
    }
    .faq-answer {
      display: none;
      padding: 0 20px 18px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.75;
      border-left: 4px solid var(--primary);
      margin-left: 20px;
    }
    .faq-item.is-open .faq-answer {
      display: block;
    }
    .cta-band {
      padding: 76px 0;
      background:
        linear-gradient(135deg, rgba(7, 28, 24, 0.96), rgba(11, 42, 36, 0.96)),
        var(--dark);
      color: var(--white);
    }
    .cta-box {
      display: grid;
      grid-template-columns: minmax(0, 7fr) auto;
      align-items: center;
      gap: 24px;
    }
    .cta-box h2 {
      font-size: 32px;
      line-height: 1.25;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .cta-box p {
      color: rgba(255, 255, 255, 0.76);
      margin-bottom: 0;
      max-width: 740px;
    }
    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .pager {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin-top: 28px;
    }
    .pager a,
    .pager span {
      min-width: 40px;
      height: 40px;
      padding: 0 12px;
      border-radius: 10px;
      border: 1px solid var(--line);
      background: var(--white);
      color: var(--text);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 700;
      transition: background .2s ease, color .2s ease, border-color .2s ease;
    }
    .pager a:hover,
    .pager .current {
      background: var(--primary);
      border-color: var(--primary);
      color: var(--white);
    }
    .site-footer {
      background: #071C18;
      color: rgba(255, 255, 255, 0.72);
      padding: 54px 0 28px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.5fr 1fr 1.2fr;
      gap: 32px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }
    .footer-brand {
      color: var(--white);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-title {
      color: var(--white);
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-links {
      display: grid;
      gap: 8px;
    }
    .footer-links a {
      color: rgba(255, 255, 255, 0.72);
      transition: color .2s ease;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .site-footer p {
      margin-bottom: 0;
      font-size: 14px;
      line-height: 1.8;
    }
    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding-top: 22px;
      color: rgba(255, 255, 255, 0.56);
      font-size: 13px;
    }
    @media (max-width: 1024px) {
      .container {
        width: min(var(--container), calc(100% - 48px));
      }
      .nav-actions .btn {
        display: none;
      }
      .page-hero-inner,
      .main-grid,
      .faq-grid,
      .cta-box {
        grid-template-columns: 1fr;
      }
      .side-stack {
        position: static;
      }
      .update-cards {
        grid-template-columns: 1fr 1fr;
      }
      .process-wrap {
        grid-template-columns: 1fr 1fr;
      }
      .cta-actions {
        justify-content: flex-start;
      }
    }
    @media (max-width: 768px) {
      .container {
        width: calc(100% - 32px);
      }
      .nav-wrap {
        height: 64px;
      }
      .brand-text {
        font-size: 16px;
      }
      .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 11px;
      }
      .menu-toggle {
        display: inline-block;
      }
      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 72px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        border: 1px solid var(--line);
        border-radius: 16px;
        background: var(--white);
        box-shadow: var(--shadow);
      }
      .nav-links.is-open {
        display: flex;
      }
      .nav-links a {
        width: 100%;
        padding: 12px 14px;
      }
      .page-hero {
        padding: 34px 0 42px;
      }
      .page-hero h1 {
        font-size: 34px;
      }
      .page-hero p {
        font-size: 16px;
      }
      .hero-actions,
      .mini-actions {
        width: 100%;
      }
      .hero-actions .btn,
      .mini-actions .btn,
      .cta-actions .btn {
        width: 100%;
      }
      .section,
      .section-tight {
        padding: 54px 0;
      }
      .section-head {
        display: block;
      }
      .section-title,
      .cta-box h2 {
        font-size: 26px;
      }
      .news-item {
        grid-template-columns: 1fr;
        padding: 20px;
      }
      .date-card {
        min-height: auto;
        padding: 14px;
        flex-direction: row;
        justify-content: flex-start;
        gap: 8px;
      }
      .date-card .day {
        font-size: 22px;
        margin-bottom: 0;
      }
      .news-detail-list,
      .update-cards,
      .process-wrap,
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .copyright {
        flex-direction: column;
      }
    }
    @media (max-width: 520px) {
      .container {
        width: calc(100% - 28px);
      }
      .page-hero h1 {
        font-size: 30px;
      }
      .notice-panel,
      .side-card,
      .update-card,
      .process-item {
        padding: 18px;
      }
      .search-box {
        flex-direction: column;
      }
      .search-box .btn {
        width: 100%;
      }
      .pager {
        flex-wrap: wrap;
      }
    }

/* roulang page: category2 */
:root {
      --primary: #00B884;
      --primary-dark: #00996F;
      --primary-soft: #E6F8F2;
      --accent: #FF8A2A;
      --accent-soft: #FFF1E6;
      --ink: #111827;
      --text: #374151;
      --muted: #6B7280;
      --line: #E5E7EB;
      --line-strong: #D1D5DB;
      --bg: #F5F7FA;
      --white: #FFFFFF;
      --dark: #071C18;
      --dark-2: #0B2A24;
      --radius-sm: 10px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.12);
      --container: 1220px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: transparent;
    }

    input:focus,
    button:focus-visible,
    a:focus-visible {
      outline: 3px solid rgba(0, 184, 132, 0.22);
      outline-offset: 3px;
    }

    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }

    .nav-wrap {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--ink);
      white-space: nowrap;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--dark);
      position: relative;
      box-shadow: inset 0 0 0 2px rgba(0, 184, 132, 0.35);
      flex: 0 0 auto;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px 9px 10px 13px;
      background: var(--primary);
      clip-path: polygon(0 0, 100% 50%, 0 100%);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      width: 18px;
      height: 18px;
      right: -5px;
      bottom: -5px;
      border-radius: 50%;
      background: var(--accent);
      border: 4px solid var(--white);
    }

    .brand-text {
      font-size: 18px;
      letter-spacing: 0;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-links a {
      position: relative;
      padding: 10px 12px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      transition: color .2s ease, background .2s ease;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: var(--white);
    }

    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 4px auto;
      background: var(--ink);
      border-radius: 2px;
      transition: transform .2s ease, opacity .2s ease;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      white-space: nowrap;
    }

    .btn-primary {
      color: var(--white);
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(0, 184, 132, 0.22);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 14px 28px rgba(0, 184, 132, 0.28);
    }

    .btn-secondary {
      color: var(--ink);
      background: var(--white);
      border-color: var(--line-strong);
    }

    .btn-secondary:hover {
      color: var(--primary-dark);
      border-color: rgba(0, 184, 132, 0.55);
      transform: translateY(-1px);
    }

    .btn-dark {
      color: var(--white);
      background: var(--dark);
    }

    .btn-dark:hover {
      background: var(--dark-2);
      transform: translateY(-1px);
    }

    .page-hero {
      position: relative;
      padding: 42px 0 64px;
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.10), rgba(255, 138, 42, 0.08)),
        radial-gradient(circle at 80% 12%, rgba(0, 184, 132, 0.18), transparent 30%),
        var(--bg);
      border-bottom: 1px solid var(--line);
    }

    .breadcrumb {
      display: flex;
      align-items: center;
      flex-wrap: wrap;
      gap: 8px;
      margin: 0 0 18px;
      color: var(--muted);
      font-size: 14px;
    }

    .breadcrumb a {
      color: var(--primary-dark);
      font-weight: 700;
    }

    .breadcrumb span {
      color: var(--muted);
    }

    .download-hero-grid {
      display: grid;
      grid-template-columns: minmax(0, 5.6fr) minmax(360px, 4.4fr);
      gap: 34px;
      align-items: stretch;
    }

    .hero-copy {
      padding-top: 8px;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .eyebrow::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
      box-shadow: 0 0 0 4px rgba(0, 184, 132, 0.16);
    }

    h1,
    h2,
    h3 {
      color: var(--ink);
      line-height: 1.2;
      letter-spacing: 0;
      margin: 0;
    }

    h1 {
      max-width: 760px;
      font-size: clamp(30px, 4vw, 48px);
      font-weight: 800;
    }

    .hero-lead {
      max-width: 760px;
      margin: 18px 0 0;
      font-size: 17px;
      color: var(--text);
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .quick-points {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 12px;
      margin-top: 30px;
    }

    .quick-point {
      padding: 15px;
      border: 1px solid rgba(0, 184, 132, 0.18);
      background: rgba(255, 255, 255, 0.72);
      border-radius: var(--radius-md);
    }

    .quick-point strong {
      display: block;
      color: var(--ink);
      font-size: 15px;
      margin-bottom: 4px;
    }

    .quick-point span {
      display: block;
      color: var(--muted);
      font-size: 13px;
      line-height: 1.6;
    }

    .download-panel {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      padding: 24px;
      align-self: stretch;
    }

    .panel-head {
      display: flex;
      align-items: flex-start;
      justify-content: space-between;
      gap: 16px;
      padding-bottom: 18px;
      border-bottom: 1px solid var(--line);
    }

    .panel-title {
      font-size: 22px;
      font-weight: 800;
      color: var(--ink);
    }

    .status-badge {
      display: inline-flex;
      align-items: center;
      height: 30px;
      padding: 0 10px;
      border-radius: 999px;
      background: var(--accent-soft);
      color: #A34F00;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .version-box {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
      margin: 18px 0;
    }

    .version-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      padding: 14px;
      background: #FAFBFC;
    }

    .version-item span {
      display: block;
      color: var(--muted);
      font-size: 13px;
    }

    .version-item strong {
      display: block;
      color: var(--ink);
      font-size: 18px;
      margin-top: 3px;
    }

    .system-tabs {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
      padding: 6px;
      border: 1px solid var(--line);
      border-radius: 14px;
      background: #F8FAFC;
      margin-bottom: 18px;
    }

    .system-tab {
      min-height: 40px;
      border-radius: 10px;
      color: var(--text);
      font-size: 14px;
      font-weight: 800;
      transition: background .2s ease, color .2s ease, box-shadow .2s ease;
    }

    .system-tab.active,
    .system-tab:hover {
      background: var(--primary);
      color: var(--white);
      box-shadow: 0 8px 18px rgba(0, 184, 132, 0.18);
    }

    .panel-buttons {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 12px;
      margin-bottom: 18px;
    }

    .qr-row {
      display: grid;
      grid-template-columns: 112px 1fr;
      gap: 16px;
      align-items: center;
      padding: 16px;
      background: var(--primary-soft);
      border-radius: var(--radius-md);
      border: 1px dashed rgba(0, 184, 132, 0.38);
    }

    .qr-box {
      width: 112px;
      aspect-ratio: 1;
      border-radius: 12px;
      background:
        linear-gradient(90deg, rgba(0, 184, 132, 0.22) 12px, transparent 12px) 0 0 / 28px 28px,
        linear-gradient(rgba(7, 28, 24, 0.12) 12px, transparent 12px) 0 0 / 28px 28px,
        var(--white);
      border: 8px solid var(--white);
      box-shadow: inset 0 0 0 1px rgba(0, 184, 132, 0.22);
    }

    .qr-row strong {
      display: block;
      color: var(--ink);
      margin-bottom: 4px;
    }

    .qr-row p {
      margin: 0;
      color: var(--muted);
      font-size: 14px;
      line-height: 1.65;
    }

    main {
      padding: 74px 0 0;
    }

    .section {
      margin-bottom: 82px;
    }

    .section-head {
      display: flex;
      align-items: flex-end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 26px;
    }

    .section-kicker {
      color: var(--primary-dark);
      font-weight: 800;
      font-size: 14px;
      margin-bottom: 8px;
    }

    .section h2 {
      font-size: clamp(24px, 3vw, 34px);
      font-weight: 800;
    }

    .section-desc {
      max-width: 620px;
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 16px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      height: 28px;
      padding: 0 10px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
    }

    .badge-green {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }

    .badge-orange {
      color: #A34F00;
      background: var(--accent-soft);
    }

    .card-lite {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .card-lite:hover {
      transform: translateY(-2px);
      border-color: rgba(0, 184, 132, 0.35);
      box-shadow: var(--shadow-hover);
    }

    .install-grid {
      display: grid;
      grid-template-columns: minmax(0, 7fr) minmax(300px, 3fr);
      gap: 24px;
    }

    .steps {
      counter-reset: install;
      display: grid;
      gap: 14px;
    }

    .step-item {
      counter-increment: install;
      display: grid;
      grid-template-columns: 48px 1fr;
      gap: 16px;
      padding: 20px;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
    }

    .step-item::before {
      content: counter(install);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 48px;
      height: 48px;
      border-radius: 14px;
      background: var(--dark);
      color: var(--primary);
      font-weight: 900;
      font-size: 20px;
    }

    .step-item h3 {
      font-size: 20px;
      margin-bottom: 6px;
    }

    .step-item p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .notice-card {
      padding: 24px;
      background: var(--dark);
      color: rgba(255, 255, 255, 0.78);
      border-radius: var(--radius-lg);
      position: sticky;
      top: 96px;
    }

    .notice-card h3 {
      color: var(--white);
      font-size: 22px;
      margin-bottom: 12px;
    }

    .notice-card ul {
      padding: 0;
      margin: 18px 0 0;
      list-style: none;
      display: grid;
      gap: 12px;
    }

    .notice-card li {
      position: relative;
      padding-left: 22px;
      font-size: 14px;
      line-height: 1.7;
    }

    .notice-card li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 10px;
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    .compat-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 18px;
    }

    .compat-card {
      padding: 24px;
    }

    .compat-icon {
      width: 46px;
      height: 46px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 16px;
    }

    .compat-card h3 {
      font-size: 20px;
      margin-bottom: 8px;
    }

    .compat-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .version-list {
      overflow: hidden;
      border-radius: var(--radius-lg);
      border: 1px solid var(--line);
      background: var(--white);
      box-shadow: var(--shadow);
    }

    .version-row {
      display: grid;
      grid-template-columns: 150px 1fr 140px;
      gap: 18px;
      align-items: center;
      padding: 20px 24px;
      border-bottom: 1px solid var(--line);
    }

    .version-row:last-child {
      border-bottom: 0;
    }

    .version-row time {
      color: var(--muted);
      font-size: 14px;
      font-weight: 700;
    }

    .version-row strong {
      color: var(--ink);
      font-size: 17px;
    }

    .version-row p {
      margin: 3px 0 0;
      color: var(--muted);
      font-size: 14px;
    }

    .check-card {
      padding: 26px;
    }

    .check-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 18px;
    }

    .check-card h3 {
      font-size: 20px;
      margin-bottom: 12px;
    }

    .check-list {
      list-style: none;
      padding: 0;
      margin: 0;
      display: grid;
      gap: 10px;
    }

    .check-list li {
      display: flex;
      gap: 10px;
      color: var(--muted);
      font-size: 15px;
    }

    .check-list li::before {
      content: "✓";
      color: var(--primary-dark);
      font-weight: 900;
      flex: 0 0 auto;
    }

    .faq-wrap {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
    }

    .faq-question {
      width: 100%;
      min-height: 62px;
      padding: 18px 22px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      color: var(--ink);
      font-size: 17px;
      font-weight: 800;
      text-align: left;
    }

    .faq-question::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-weight: 900;
      flex: 0 0 auto;
    }

    .faq-item.active .faq-question::after {
      content: "−";
      background: var(--primary);
      color: var(--white);
    }

    .faq-answer {
      display: none;
      padding: 0 22px 20px;
      color: var(--muted);
      font-size: 15px;
    }

    .faq-answer p {
      margin: 0;
      padding-left: 14px;
      border-left: 3px solid var(--primary);
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .cta-band {
      margin-bottom: 0;
      padding: 44px 0 76px;
    }

    .cta-box {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      padding: 34px;
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.22), rgba(255, 138, 42, 0.12)),
        var(--dark);
      color: rgba(255, 255, 255, 0.78);
      overflow: hidden;
      position: relative;
    }

    .cta-box::after {
      content: "";
      position: absolute;
      right: 34px;
      top: 22px;
      width: 160px;
      height: 90px;
      border: 1px solid rgba(255, 255, 255, 0.14);
      border-radius: 18px;
      transform: rotate(-8deg);
      pointer-events: none;
    }

    .cta-box h2 {
      color: var(--white);
      font-size: clamp(24px, 3vw, 32px);
      margin-bottom: 10px;
    }

    .cta-box p {
      margin: 0;
      max-width: 680px;
    }

    .cta-actions {
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      position: relative;
      z-index: 1;
    }

    .site-footer {
      background: #0B1614;
      color: rgba(255, 255, 255, 0.72);
      padding: 48px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: minmax(0, 1.25fr) minmax(180px, 0.7fr) minmax(0, 1fr);
      gap: 34px;
      padding-bottom: 32px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.10);
    }

    .footer-brand {
      color: var(--white);
      font-size: 22px;
      font-weight: 900;
      margin-bottom: 10px;
    }

    .footer-title {
      color: var(--white);
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.72);
      transition: color .2s ease;
    }

    .footer-links a:hover {
      color: var(--primary);
    }

    .site-footer p {
      margin: 0;
      font-size: 14px;
      line-height: 1.8;
    }

    .copyright {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      padding-top: 20px;
      color: rgba(255, 255, 255, 0.58);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(var(--container), calc(100% - 48px));
      }

      .nav-actions .btn {
        display: none;
      }

      .download-hero-grid,
      .install-grid {
        grid-template-columns: 1fr;
      }

      .notice-card {
        position: static;
      }

      .quick-points,
      .compat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .version-row {
        grid-template-columns: 130px 1fr;
      }

      .version-row .badge {
        grid-column: 2;
        width: fit-content;
      }

      .cta-box {
        grid-template-columns: 1fr;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: min(var(--container), calc(100% - 32px));
      }

      .nav-wrap {
        height: 62px;
      }

      .brand-text {
        font-size: 16px;
      }

      .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 11px;
      }

      .menu-toggle {
        display: inline-block;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 68px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 6px;
        padding: 14px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: var(--white);
        box-shadow: var(--shadow-hover);
      }

      .site-header.menu-open .nav-links {
        display: flex;
      }

      .nav-links a {
        padding: 12px 14px;
      }

      .site-header.menu-open .menu-toggle span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
      }

      .site-header.menu-open .menu-toggle span:nth-child(2) {
        opacity: 0;
      }

      .site-header.menu-open .menu-toggle span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
      }

      .page-hero {
        padding: 28px 0 44px;
      }

      h1 {
        font-size: 32px;
      }

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

      .hero-actions,
      .panel-buttons {
        flex-direction: column;
        display: grid;
        grid-template-columns: 1fr;
      }

      .btn {
        width: 100%;
        min-width: 0;
        white-space: normal;
        text-align: center;
      }

      .quick-points,
      .compat-grid,
      .check-grid {
        grid-template-columns: 1fr;
      }

      .download-panel {
        padding: 18px;
      }

      .panel-head {
        flex-direction: column;
      }

      .qr-row {
        grid-template-columns: 1fr;
      }

      .qr-box {
        margin: 0 auto;
      }

      main {
        padding-top: 52px;
      }

      .section {
        margin-bottom: 56px;
      }

      .section-head {
        display: block;
      }

      .version-row {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 18px;
      }

      .version-row .badge {
        grid-column: auto;
      }

      .cta-box {
        padding: 24px;
      }

      .footer-grid,
      .copyright {
        grid-template-columns: 1fr;
        display: grid;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: calc(100% - 32px);
      }

      .brand {
        gap: 9px;
      }

      .brand-text {
        max-width: 190px;
        overflow: hidden;
        text-overflow: ellipsis;
      }

      .system-tabs {
        grid-template-columns: 1fr;
      }

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

      .step-item::before {
        width: 42px;
        height: 42px;
      }

      .faq-question {
        align-items: flex-start;
        font-size: 16px;
      }
    }

/* roulang page: category3 */
:root {
      --primary: #00B884;
      --primary-dark: #00996F;
      --primary-soft: #E6F8F2;
      --accent: #FF8A2A;
      --accent-soft: #FFF1E6;
      --ink: #111827;
      --text: #374151;
      --muted: #6B7280;
      --line: #E5E7EB;
      --line-strong: #D1D5DB;
      --bg: #F5F7FA;
      --white: #FFFFFF;
      --dark: #071C18;
      --dark-2: #0B2A24;
      --radius-sm: 10px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.12);
      --container: 1220px;
    }

    * {
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.75;
      overflow-x: hidden;
    }

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

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

    button,
    input {
      font: inherit;
    }

    button {
      cursor: pointer;
      border: 0;
      background: transparent;
    }

    :focus-visible {
      outline: 3px solid rgba(0, 184, 132, 0.28);
      outline-offset: 3px;
    }

    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }

    .nav-wrap {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--ink);
      white-space: nowrap;
    }

    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--dark);
      position: relative;
      box-shadow: inset 0 0 0 2px rgba(0, 184, 132, 0.35);
      flex: 0 0 auto;
    }

    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px 9px 10px 13px;
      background: var(--primary);
      clip-path: polygon(0 0, 100% 50%, 0 100%);
    }

    .brand-mark::after {
      content: "";
      position: absolute;
      width: 18px;
      height: 18px;
      right: -5px;
      bottom: -5px;
      border-radius: 50%;
      background: var(--accent);
      border: 4px solid var(--white);
    }

    .brand-text {
      font-size: 18px;
      letter-spacing: 0;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }

    .nav-links a {
      position: relative;
      padding: 10px 12px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      transition: color .2s ease, background .2s ease;
    }

    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }

    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }

    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: var(--white);
    }

    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 4px auto;
      background: var(--ink);
      border-radius: 2px;
      transition: transform .2s ease, opacity .2s ease;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      white-space: nowrap;
    }

    .btn-primary {
      color: var(--white);
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(0, 184, 132, 0.22);
    }

    .btn-primary:hover {
      color: var(--white);
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 14px 28px rgba(0, 184, 132, 0.28);
    }

    .btn-secondary {
      color: var(--ink);
      background: var(--white);
      border-color: var(--line-strong);
    }

    .btn-secondary:hover {
      color: var(--primary-dark);
      border-color: rgba(0, 184, 132, 0.55);
      transform: translateY(-1px);
    }

    .btn-dark {
      color: var(--white);
      background: var(--dark);
    }

    .btn-dark:hover {
      color: var(--white);
      background: var(--dark-2);
      transform: translateY(-1px);
    }

    main {
      display: block;
    }

    .section {
      padding: 78px 0;
    }

    .section-tight {
      padding: 58px 0;
    }

    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 24px;
      margin-bottom: 28px;
    }

    .section-title {
      margin: 0;
      color: var(--ink);
      font-size: 32px;
      line-height: 1.25;
      font-weight: 800;
    }

    .section-desc {
      margin: 10px 0 0;
      max-width: 720px;
      color: var(--muted);
      font-size: 16px;
    }

    .badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 7px 11px;
      border-radius: 999px;
      font-size: 13px;
      font-weight: 800;
      line-height: 1;
      border: 1px solid transparent;
    }

    .badge-primary {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }

    .badge-accent {
      color: #B45309;
      background: var(--accent-soft);
    }

    .card {
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow);
      overflow: hidden;
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }

    .card:hover {
      transform: translateY(-2px);
      border-color: rgba(0, 184, 132, 0.35);
      box-shadow: var(--shadow-hover);
    }

    .page-hero {
      position: relative;
      padding: 46px 0 54px;
      overflow: hidden;
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.10), rgba(255, 138, 42, 0.08)),
        linear-gradient(180deg, #FFFFFF 0%, var(--bg) 100%);
      border-bottom: 1px solid var(--line);
    }

    .page-hero::after {
      content: "";
      position: absolute;
      inset: auto -90px -120px auto;
      width: 360px;
      height: 360px;
      border-radius: 50%;
      border: 52px solid rgba(0, 184, 132, 0.08);
      pointer-events: none;
    }

    .breadcrumb {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      align-items: center;
      margin: 0 0 16px;
      color: var(--muted);
      font-size: 14px;
    }

    .breadcrumb a {
      color: var(--text);
      font-weight: 700;
    }

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

    .hero-panel {
      position: relative;
      z-index: 1;
      display: grid;
      grid-template-columns: minmax(0, 5.2fr) minmax(320px, 4.8fr);
      gap: 34px;
      align-items: center;
    }

    .page-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      padding: 7px 12px;
      border-radius: 999px;
      background: var(--primary-soft);
      color: var(--primary-dark);
      font-size: 14px;
      font-weight: 800;
      margin-bottom: 18px;
    }

    .page-kicker::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    h1 {
      margin: 0;
      max-width: 760px;
      color: var(--ink);
      font-size: 46px;
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: 0;
    }

    .hero-copy {
      margin: 18px 0 0;
      max-width: 720px;
      color: var(--text);
      font-size: 17px;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }

    .entry-console {
      background: var(--dark);
      color: var(--white);
      border-radius: 22px;
      padding: 24px;
      box-shadow: 0 22px 46px rgba(7, 28, 24, 0.22);
    }

    .console-top {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      align-items: center;
      padding-bottom: 16px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    }

    .console-title {
      font-size: 18px;
      font-weight: 800;
    }

    .status-dot {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(0, 184, 132, 0.16);
      color: #A7F3D0;
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .status-dot::before {
      content: "";
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--primary);
    }

    .console-steps {
      display: grid;
      gap: 12px;
      margin-top: 18px;
    }

    .console-step {
      display: grid;
      grid-template-columns: 36px minmax(0, 1fr);
      gap: 12px;
      align-items: start;
      padding: 14px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.07);
      border: 1px solid rgba(255, 255, 255, 0.10);
    }

    .console-num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 36px;
      height: 36px;
      border-radius: 12px;
      background: var(--primary);
      color: var(--white);
      font-weight: 900;
    }

    .console-step strong {
      display: block;
      color: var(--white);
      line-height: 1.4;
    }

    .console-step span {
      display: block;
      color: rgba(255, 255, 255, 0.70);
      font-size: 14px;
      line-height: 1.6;
      margin-top: 2px;
    }

    .process-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 16px;
    }

    .process-card {
      position: relative;
      padding: 24px;
      min-height: 214px;
    }

    .process-card::after {
      content: "";
      position: absolute;
      top: 33px;
      right: -18px;
      width: 22px;
      height: 2px;
      background: var(--line-strong);
    }

    .process-card:last-child::after {
      display: none;
    }

    .process-index {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 42px;
      height: 42px;
      border-radius: 14px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-weight: 900;
      margin-bottom: 16px;
    }

    .process-card h2,
    .process-card h3 {
      margin: 0 0 8px;
      color: var(--ink);
      font-size: 20px;
      font-weight: 800;
      line-height: 1.35;
    }

    .process-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
    }

    .feature-layout {
      display: grid;
      grid-template-columns: minmax(0, 4.6fr) minmax(0, 5.4fr);
      gap: 24px;
      align-items: stretch;
    }

    .feature-cover {
      padding: 28px;
      color: var(--white);
      background:
        linear-gradient(145deg, rgba(0, 184, 132, 0.20), rgba(255, 138, 42, 0.16)),
        var(--dark);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      min-height: 100%;
    }

    .feature-cover h2 {
      margin: 18px 0 10px;
      color: var(--white);
      font-size: 30px;
      line-height: 1.28;
      font-weight: 800;
    }

    .feature-cover p {
      margin: 0;
      color: rgba(255, 255, 255, 0.76);
    }

    .browser-strip {
      margin-top: 28px;
      display: grid;
      gap: 10px;
    }

    .browser-line {
      display: flex;
      justify-content: space-between;
      gap: 14px;
      padding: 13px 14px;
      border-radius: 14px;
      background: rgba(255, 255, 255, 0.08);
      border: 1px solid rgba(255, 255, 255, 0.10);
      font-size: 14px;
    }

    .browser-line span:first-child {
      color: rgba(255, 255, 255, 0.72);
    }

    .browser-line span:last-child {
      color: #A7F3D0;
      font-weight: 800;
      text-align: right;
    }

    .feature-list {
      display: grid;
      gap: 14px;
    }

    .feature-item {
      display: grid;
      grid-template-columns: 44px minmax(0, 1fr);
      gap: 14px;
      padding: 20px;
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }

    .feature-item:hover {
      transform: translateY(-1px);
      border-color: rgba(0, 184, 132, 0.38);
      box-shadow: var(--shadow);
    }

    .feature-icon {
      width: 44px;
      height: 44px;
      border-radius: 14px;
      background: var(--accent-soft);
      color: #C05621;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }

    .feature-item h3 {
      margin: 0 0 4px;
      color: var(--ink);
      font-size: 19px;
      line-height: 1.35;
      font-weight: 800;
    }

    .feature-item p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .trouble-section {
      background: var(--white);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }

    .trouble-grid {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
      gap: 18px;
    }

    .solution-card {
      padding: 24px;
    }

    .solution-card h3 {
      margin: 12px 0 10px;
      color: var(--ink);
      font-size: 21px;
      line-height: 1.35;
      font-weight: 800;
    }

    .solution-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
    }

    .solution-list {
      margin: 18px 0 0;
      padding: 0;
      list-style: none;
      display: grid;
      gap: 10px;
    }

    .solution-list li {
      position: relative;
      padding-left: 20px;
      color: var(--text);
      font-size: 15px;
    }

    .solution-list li::before {
      content: "";
      position: absolute;
      left: 0;
      top: 12px;
      width: 7px;
      height: 7px;
      border-radius: 50%;
      background: var(--primary);
    }

    .compat-board {
      display: grid;
      grid-template-columns: 1.05fr 1fr 1fr;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      background: var(--white);
      box-shadow: var(--shadow);
    }

    .compat-cell {
      padding: 18px 20px;
      border-right: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
      min-height: 74px;
    }

    .compat-cell:nth-child(3n) {
      border-right: 0;
    }

    .compat-cell:nth-last-child(-n+3) {
      border-bottom: 0;
    }

    .compat-head {
      background: var(--dark);
      color: var(--white);
      font-weight: 800;
    }

    .compat-cell strong {
      color: var(--ink);
      display: block;
      margin-bottom: 2px;
    }

    .compat-cell span {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.6;
    }

    .download-callout {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 260px;
      gap: 24px;
      align-items: center;
      padding: 30px;
      border-radius: 22px;
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.12), rgba(255, 138, 42, 0.10)),
        var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
    }

    .download-callout h2 {
      margin: 0 0 10px;
      color: var(--ink);
      font-size: 28px;
      line-height: 1.3;
      font-weight: 800;
    }

    .download-callout p {
      margin: 0;
      color: var(--muted);
    }

    .download-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .qr-box {
      width: 100%;
      aspect-ratio: 1;
      border-radius: 18px;
      background:
        linear-gradient(90deg, rgba(17, 24, 39, 0.06) 1px, transparent 1px),
        linear-gradient(rgba(17, 24, 39, 0.06) 1px, transparent 1px),
        var(--white);
      background-size: 18px 18px;
      border: 1px dashed var(--line-strong);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--muted);
      font-weight: 800;
      text-align: center;
      padding: 18px;
    }

    .faq-list {
      display: grid;
      gap: 14px;
    }

    .faq-item {
      border: 1px solid var(--line);
      border-radius: var(--radius-md);
      background: var(--white);
      overflow: hidden;
      box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
    }

    .faq-question {
      width: 100%;
      display: flex;
      justify-content: space-between;
      gap: 18px;
      align-items: center;
      padding: 18px 20px;
      color: var(--ink);
      font-size: 17px;
      font-weight: 800;
      text-align: left;
    }

    .faq-question::after {
      content: "+";
      width: 26px;
      height: 26px;
      border-radius: 50%;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      background: var(--primary-soft);
      flex: 0 0 auto;
      transition: transform .2s ease;
    }

    .faq-item.active .faq-question::after {
      content: "−";
      transform: rotate(180deg);
    }

    .faq-answer {
      display: none;
      padding: 0 20px 20px;
      color: var(--muted);
      font-size: 15px;
      border-left: 3px solid var(--primary);
      margin-left: 20px;
      margin-bottom: 18px;
      background: linear-gradient(90deg, rgba(0, 184, 132, 0.05), transparent);
    }

    .faq-item.active .faq-answer {
      display: block;
    }

    .cta-band {
      padding: 56px 0 78px;
    }

    .cta-box {
      display: grid;
      grid-template-columns: minmax(0, 1fr) auto;
      gap: 24px;
      align-items: center;
      padding: 34px;
      border-radius: 24px;
      color: var(--white);
      background:
        linear-gradient(135deg, rgba(0, 184, 132, 0.22), rgba(255, 138, 42, 0.14)),
        var(--dark);
      box-shadow: 0 22px 46px rgba(7, 28, 24, 0.20);
    }

    .cta-box h2 {
      margin: 0 0 8px;
      color: var(--white);
      font-size: 30px;
      line-height: 1.3;
      font-weight: 800;
    }

    .cta-box p {
      margin: 0;
      color: rgba(255, 255, 255, 0.74);
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }

    .site-footer {
      background: var(--dark);
      color: rgba(255, 255, 255, 0.72);
      padding: 52px 0 24px;
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 1.4fr 1fr 1.2fr;
      gap: 36px;
      padding-bottom: 34px;
      border-bottom: 1px solid rgba(255, 255, 255, 0.12);
    }

    .footer-brand {
      color: var(--white);
      font-size: 20px;
      font-weight: 900;
      margin-bottom: 12px;
    }

    .footer-title {
      color: var(--white);
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 12px;
    }

    .footer-links {
      display: grid;
      gap: 8px;
    }

    .footer-links a {
      color: rgba(255, 255, 255, 0.72);
      transition: color .2s ease, transform .2s ease;
    }

    .footer-links a:hover {
      color: #A7F3D0;
      transform: translateX(2px);
    }

    .site-footer p {
      margin: 0;
      font-size: 14px;
      line-height: 1.8;
    }

    .copyright {
      display: flex;
      justify-content: space-between;
      gap: 18px;
      padding-top: 22px;
      color: rgba(255, 255, 255, 0.58);
      font-size: 13px;
    }

    @media (max-width: 1024px) {
      .container {
        width: min(var(--container), calc(100% - 48px));
      }

      .nav-links {
        gap: 2px;
      }

      .nav-links a {
        padding: 9px 9px;
      }

      .hero-panel,
      .feature-layout {
        grid-template-columns: 1fr;
      }

      .process-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }

      .process-card::after {
        display: none;
      }

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

      .footer-grid > div:first-child {
        grid-column: 1 / -1;
      }
    }

    @media (max-width: 768px) {
      .container {
        width: calc(100% - 32px);
      }

      .nav-wrap {
        height: 62px;
      }

      .brand-text {
        font-size: 16px;
      }

      .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 11px;
      }

      .menu-toggle {
        display: inline-block;
      }

      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 70px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        border: 1px solid var(--line);
        border-radius: 18px;
        background: var(--white);
        box-shadow: var(--shadow-hover);
      }

      .nav-links.open {
        display: flex;
      }

      .nav-links a {
        padding: 12px 14px;
      }

      .nav-actions .btn {
        display: none;
      }

      .page-hero {
        padding: 34px 0 42px;
      }

      h1 {
        font-size: 34px;
      }

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

      .hero-actions .btn,
      .cta-actions .btn {
        width: 100%;
      }

      .entry-console {
        padding: 18px;
        border-radius: 18px;
      }

      .section {
        padding: 52px 0;
      }

      .section-tight {
        padding: 44px 0;
      }

      .section-head {
        display: block;
      }

      .section-title {
        font-size: 26px;
      }

      .process-grid,
      .trouble-grid {
        grid-template-columns: 1fr;
      }

      .download-callout,
      .cta-box {
        grid-template-columns: 1fr;
        padding: 24px;
      }

      .cta-actions {
        justify-content: stretch;
      }

      .compat-board {
        grid-template-columns: 1fr;
      }

      .compat-cell,
      .compat-cell:nth-child(3n),
      .compat-cell:nth-last-child(-n+3) {
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }

      .compat-cell:last-child {
        border-bottom: 0;
      }

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

      .copyright {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .container {
        width: calc(100% - 28px);
      }

      .brand-text {
        max-width: 190px;
        white-space: normal;
        line-height: 1.2;
      }

      h1 {
        font-size: 30px;
      }

      .page-kicker,
      .breadcrumb {
        font-size: 13px;
      }

      .console-top {
        align-items: flex-start;
        flex-direction: column;
      }

      .console-step,
      .feature-item {
        grid-template-columns: 1fr;
      }

      .process-card,
      .solution-card {
        padding: 20px;
      }

      .download-callout h2,
      .cta-box h2 {
        font-size: 24px;
      }

      .qr-box {
        max-width: 220px;
        margin: 0 auto;
      }
    }

/* roulang page: category4 */
:root {
      --primary: #00B884;
      --primary-dark: #00996F;
      --primary-soft: #E6F8F2;
      --accent: #FF8A2A;
      --accent-soft: #FFF1E6;
      --ink: #111827;
      --text: #374151;
      --muted: #6B7280;
      --line: #E5E7EB;
      --line-strong: #D1D5DB;
      --bg: #F5F7FA;
      --white: #FFFFFF;
      --dark: #071C18;
      --dark-2: #0B2A24;
      --radius-sm: 10px;
      --radius-md: 14px;
      --radius-lg: 18px;
      --shadow: 0 10px 30px rgba(15, 23, 42, 0.08);
      --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.12);
      --container: 1220px;
    }
    * {
      box-sizing: border-box;
    }
    html {
      scroll-behavior: smooth;
    }
    body {
      margin: 0;
      font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      color: var(--text);
      background: var(--bg);
      line-height: 1.75;
      overflow-x: hidden;
    }
    a {
      color: inherit;
      text-decoration: none;
    }
    img {
      max-width: 100%;
      display: block;
    }
    button,
    input {
      font: inherit;
    }
    button {
      cursor: pointer;
      border: 0;
      background: transparent;
    }
    :focus-visible {
      outline: 3px solid rgba(0, 184, 132, 0.32);
      outline-offset: 3px;
    }
    .container {
      width: min(var(--container), calc(100% - 64px));
      margin: 0 auto;
    }
    .site-header {
      position: sticky;
      top: 0;
      z-index: 50;
      background: rgba(255, 255, 255, 0.94);
      border-bottom: 1px solid var(--line);
      backdrop-filter: blur(14px);
    }
    .nav-wrap {
      height: 72px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 24px;
    }
    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      font-weight: 800;
      color: var(--ink);
      white-space: nowrap;
    }
    .brand-mark {
      width: 40px;
      height: 40px;
      border-radius: 12px;
      background: var(--dark);
      position: relative;
      box-shadow: inset 0 0 0 2px rgba(0, 184, 132, 0.35);
      flex: 0 0 auto;
    }
    .brand-mark::before {
      content: "";
      position: absolute;
      inset: 10px 9px 10px 13px;
      background: var(--primary);
      clip-path: polygon(0 0, 100% 50%, 0 100%);
    }
    .brand-mark::after {
      content: "";
      position: absolute;
      width: 18px;
      height: 18px;
      right: -5px;
      bottom: -5px;
      border-radius: 50%;
      background: var(--accent);
      border: 4px solid var(--white);
    }
    .brand-text {
      font-size: 18px;
      letter-spacing: 0;
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .nav-links a {
      position: relative;
      padding: 10px 12px;
      border-radius: 999px;
      font-size: 15px;
      font-weight: 600;
      color: var(--text);
      transition: color .2s ease, background .2s ease;
    }
    .nav-links a:hover,
    .nav-links a.active {
      color: var(--primary-dark);
      background: var(--primary-soft);
    }
    .nav-actions {
      display: flex;
      align-items: center;
      gap: 12px;
    }
    .menu-toggle {
      display: none;
      width: 42px;
      height: 42px;
      border: 1px solid var(--line);
      border-radius: 12px;
      background: var(--white);
    }
    .menu-toggle span {
      display: block;
      width: 18px;
      height: 2px;
      margin: 4px auto;
      background: var(--ink);
      border-radius: 2px;
      transition: transform .2s ease, opacity .2s ease;
    }
    .menu-toggle.is-open span:nth-child(1) {
      transform: translateY(6px) rotate(45deg);
    }
    .menu-toggle.is-open span:nth-child(2) {
      opacity: 0;
    }
    .menu-toggle.is-open span:nth-child(3) {
      transform: translateY(-6px) rotate(-45deg);
    }
    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 44px;
      padding: 0 18px;
      border-radius: 12px;
      font-size: 15px;
      font-weight: 700;
      border: 1px solid transparent;
      transition: transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      white-space: nowrap;
    }
    .btn-primary {
      color: var(--white);
      background: var(--primary);
      box-shadow: 0 10px 22px rgba(0, 184, 132, 0.22);
    }
    .btn-primary:hover {
      color: var(--white);
      background: var(--primary-dark);
      transform: translateY(-1px);
      box-shadow: 0 14px 28px rgba(0, 184, 132, 0.28);
    }
    .btn-secondary {
      color: var(--ink);
      background: var(--white);
      border-color: var(--line-strong);
    }
    .btn-secondary:hover {
      color: var(--primary-dark);
      border-color: rgba(0, 184, 132, 0.55);
      transform: translateY(-1px);
    }
    .btn-dark {
      color: var(--white);
      background: var(--dark);
    }
    .btn-dark:hover {
      color: var(--white);
      background: var(--dark-2);
      transform: translateY(-1px);
    }
    .section {
      padding: 78px 0;
    }
    .section-tight {
      padding: 56px 0;
    }
    .section-head {
      display: flex;
      align-items: end;
      justify-content: space-between;
      gap: 28px;
      margin-bottom: 28px;
    }
    .section-kicker {
      display: inline-flex;
      padding: 5px 10px;
      border-radius: 999px;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-size: 13px;
      font-weight: 800;
      margin-bottom: 10px;
    }
    .section-title {
      margin: 0;
      color: var(--ink);
      font-size: 32px;
      line-height: 1.25;
      font-weight: 800;
      letter-spacing: 0;
    }
    .section-desc {
      max-width: 680px;
      margin: 10px 0 0;
      color: var(--muted);
      font-size: 16px;
    }
    .badge,
    .tag {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      border-radius: 999px;
      font-weight: 800;
      line-height: 1;
    }
    .tag {
      padding: 7px 10px;
      font-size: 13px;
      color: var(--primary-dark);
      background: var(--primary-soft);
    }
    .tag.hot {
      color: #BC5B00;
      background: var(--accent-soft);
    }
    .crumbs {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      color: var(--muted);
      font-size: 14px;
      margin-bottom: 16px;
    }
    .crumbs a {
      color: var(--primary-dark);
      font-weight: 700;
    }
    .crumbs span {
      color: var(--muted);
    }
    .page-hero {
      position: relative;
      padding: 54px 0 44px;
      border-bottom: 1px solid var(--line);
      background:
        linear-gradient(120deg, rgba(0, 184, 132, 0.10), rgba(255, 138, 42, 0.08)),
        linear-gradient(0deg, var(--bg), var(--bg));
      overflow: hidden;
    }
    .page-hero::before {
      content: "";
      position: absolute;
      inset: 0;
      background-image:
        linear-gradient(rgba(17, 24, 39, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(17, 24, 39, 0.05) 1px, transparent 1px);
      background-size: 34px 34px;
      mask-image: linear-gradient(90deg, rgba(0,0,0,.28), transparent 76%);
      pointer-events: none;
    }
    .guide-hero-grid {
      position: relative;
      display: grid;
      grid-template-columns: minmax(0, 6.5fr) minmax(320px, 4.5fr);
      gap: 34px;
      align-items: stretch;
    }
    .hero-copy h1 {
      margin: 0;
      color: var(--ink);
      font-size: 46px;
      line-height: 1.18;
      font-weight: 800;
      letter-spacing: 0;
    }
    .hero-copy p {
      margin: 18px 0 0;
      max-width: 760px;
      font-size: 17px;
      color: var(--text);
    }
    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 26px;
    }
    .quick-panel {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      box-shadow: var(--shadow);
      padding: 24px;
      align-self: stretch;
    }
    .quick-panel-title {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 14px;
      margin-bottom: 18px;
    }
    .quick-panel-title strong {
      color: var(--ink);
      font-size: 19px;
    }
    .progress-list {
      display: grid;
      gap: 12px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .progress-list li {
      display: flex;
      align-items: center;
      gap: 12px;
      padding: 12px;
      border-radius: var(--radius-md);
      background: #FAFBFC;
      border: 1px solid var(--line);
    }
    .progress-num {
      width: 30px;
      height: 30px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      background: var(--dark);
      font-weight: 800;
      flex: 0 0 auto;
    }
    .progress-list b {
      display: block;
      color: var(--ink);
      line-height: 1.35;
    }
    .progress-list small {
      display: block;
      color: var(--muted);
      line-height: 1.45;
      margin-top: 2px;
    }
    .guide-map {
      display: grid;
      grid-template-columns: 1.15fr .85fr;
      gap: 22px;
      align-items: stretch;
    }
    .featured-guide {
      background: var(--dark);
      color: var(--white);
      border-radius: var(--radius-lg);
      padding: 28px;
      min-height: 330px;
      display: flex;
      flex-direction: column;
      justify-content: space-between;
      position: relative;
      overflow: hidden;
      box-shadow: var(--shadow);
    }
    .featured-guide::after {
      content: "";
      position: absolute;
      right: -70px;
      bottom: -88px;
      width: 220px;
      height: 220px;
      border: 36px solid rgba(0, 184, 132, 0.26);
      border-radius: 50%;
    }
    .featured-guide h2 {
      position: relative;
      margin: 16px 0 12px;
      max-width: 650px;
      font-size: 30px;
      line-height: 1.28;
      font-weight: 800;
      color: var(--white);
    }
    .featured-guide p {
      position: relative;
      margin: 0;
      max-width: 680px;
      color: rgba(255,255,255,.78);
    }
    .guide-stats {
      position: relative;
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-top: 26px;
    }
    .stat-item {
      padding: 15px;
      border-radius: var(--radius-md);
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.12);
    }
    .stat-item b {
      display: block;
      color: var(--primary);
      font-size: 24px;
      line-height: 1;
    }
    .stat-item span {
      display: block;
      margin-top: 8px;
      color: rgba(255,255,255,.72);
      font-size: 13px;
      line-height: 1.45;
    }
    .guide-list {
      display: grid;
      gap: 14px;
    }
    .guide-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 20px;
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .guide-card:hover {
      transform: translateY(-2px);
      border-color: rgba(0, 184, 132, 0.45);
      box-shadow: var(--shadow-hover);
    }
    .guide-card h3 {
      margin: 12px 0 8px;
      color: var(--ink);
      font-size: 20px;
      line-height: 1.35;
      font-weight: 800;
    }
    .guide-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.65;
    }
    .step-flow {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 16px;
    }
    .step-card {
      position: relative;
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 22px;
      box-shadow: var(--shadow);
      min-height: 210px;
      transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease;
    }
    .step-card:hover {
      transform: translateY(-2px);
      border-color: rgba(0, 184, 132, 0.5);
      box-shadow: var(--shadow-hover);
    }
    .step-index {
      width: 42px;
      height: 42px;
      border-radius: 14px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--white);
      background: var(--primary);
      font-weight: 800;
      margin-bottom: 16px;
      box-shadow: 0 10px 22px rgba(0, 184, 132, 0.22);
    }
    .step-card h3 {
      margin: 0 0 10px;
      color: var(--ink);
      font-size: 20px;
      font-weight: 800;
      line-height: 1.35;
    }
    .step-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.65;
    }
    .tips-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 18px;
    }
    .tip-card {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      padding: 24px;
      box-shadow: var(--shadow);
      transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .tip-card:hover {
      transform: translateY(-2px);
      border-color: rgba(255, 138, 42, 0.45);
      box-shadow: var(--shadow-hover);
    }
    .tip-icon {
      width: 46px;
      height: 46px;
      border-radius: 15px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      color: var(--primary-dark);
      background: var(--primary-soft);
      font-size: 22px;
      font-weight: 800;
      margin-bottom: 14px;
    }
    .tip-card:nth-child(2n) .tip-icon {
      color: #BC5B00;
      background: var(--accent-soft);
    }
    .tip-card h3 {
      margin: 0 0 10px;
      color: var(--ink);
      font-size: 20px;
      font-weight: 800;
      line-height: 1.35;
    }
    .tip-card p {
      margin: 0;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.68;
    }
    .scenario-band {
      background: var(--white);
      border-top: 1px solid var(--line);
      border-bottom: 1px solid var(--line);
    }
    .scenario-layout {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 28px;
      align-items: start;
    }
    .scenario-note {
      position: sticky;
      top: 94px;
      padding: 26px;
      border-radius: var(--radius-lg);
      background: var(--primary-soft);
      border: 1px solid rgba(0, 184, 132, 0.22);
    }
    .scenario-note h2 {
      margin: 0 0 12px;
      color: var(--ink);
      font-size: 28px;
      font-weight: 800;
      line-height: 1.25;
    }
    .scenario-note p {
      margin: 0;
      color: var(--text);
    }
    .check-list {
      display: grid;
      gap: 14px;
      margin: 0;
      padding: 0;
      list-style: none;
    }
    .check-list li {
      display: grid;
      grid-template-columns: 34px 1fr;
      gap: 14px;
      padding: 18px;
      border-radius: var(--radius-lg);
      background: #FAFBFC;
      border: 1px solid var(--line);
    }
    .check-mark {
      width: 34px;
      height: 34px;
      border-radius: 12px;
      background: var(--dark);
      color: var(--primary);
      display: inline-flex;
      align-items: center;
      justify-content: center;
      font-weight: 900;
    }
    .check-list b {
      display: block;
      color: var(--ink);
      font-size: 17px;
      line-height: 1.35;
      margin-bottom: 5px;
    }
    .check-list span {
      color: var(--muted);
      font-size: 15px;
      line-height: 1.65;
    }
    .problem-table {
      overflow: hidden;
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      background: var(--white);
      box-shadow: var(--shadow);
    }
    .problem-row {
      display: grid;
      grid-template-columns: .8fr 1.2fr;
      gap: 0;
      border-bottom: 1px solid var(--line);
    }
    .problem-row:last-child {
      border-bottom: 0;
    }
    .problem-cell {
      padding: 20px 22px;
    }
    .problem-cell:first-child {
      background: #FAFBFC;
      border-right: 1px solid var(--line);
      color: var(--ink);
      font-weight: 800;
    }
    .problem-cell:last-child {
      color: var(--text);
    }
    .download-strip {
      background:
        linear-gradient(135deg, rgba(7, 28, 24, 0.98), rgba(11, 42, 36, 0.96));
      color: var(--white);
      border-radius: var(--radius-lg);
      padding: 30px;
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 22px;
      align-items: center;
      box-shadow: var(--shadow);
      overflow: hidden;
      position: relative;
    }
    .download-strip::after {
      content: "";
      position: absolute;
      right: 30px;
      top: 22px;
      width: 160px;
      height: 88px;
      border: 1px solid rgba(255,255,255,.11);
      border-radius: 18px;
      transform: rotate(-8deg);
      pointer-events: none;
    }
    .download-strip h2 {
      position: relative;
      margin: 0 0 8px;
      color: var(--white);
      font-size: 28px;
      font-weight: 800;
      line-height: 1.28;
    }
    .download-strip p {
      position: relative;
      margin: 0;
      max-width: 720px;
      color: rgba(255,255,255,.75);
    }
    .download-meta {
      position: relative;
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }
    .download-meta span {
      padding: 7px 10px;
      border-radius: 999px;
      background: rgba(255,255,255,.08);
      border: 1px solid rgba(255,255,255,.12);
      color: rgba(255,255,255,.82);
      font-size: 13px;
      font-weight: 700;
    }
    .download-actions {
      position: relative;
      display: flex;
      gap: 12px;
      flex-wrap: wrap;
      justify-content: flex-end;
    }
    .faq-wrap {
      display: grid;
      grid-template-columns: .85fr 1.15fr;
      gap: 30px;
      align-items: start;
    }
    .faq-list {
      display: grid;
      gap: 14px;
    }
    .faq-item {
      background: var(--white);
      border: 1px solid var(--line);
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: 0 8px 22px rgba(15, 23, 42, 0.05);
    }
    .faq-question {
      width: 100%;
      min-height: 58px;
      padding: 18px 20px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 18px;
      color: var(--ink);
      font-size: 17px;
      font-weight: 800;
      text-align: left;
    }
    .faq-question::after {
      content: "+";
      width: 28px;
      height: 28px;
      border-radius: 10px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      background: var(--primary-soft);
      color: var(--primary-dark);
      flex: 0 0 auto;
      transition: transform .2s ease;
    }
    .faq-item.active .faq-question::after {
      content: "−";
      transform: rotate(180deg);
    }
    .faq-answer {
      display: none;
      padding: 0 20px 20px;
      color: var(--muted);
      font-size: 15px;
      line-height: 1.7;
    }
    .faq-item.active .faq-answer {
      display: block;
    }
    .cta-panel {
      padding: 34px;
      border-radius: var(--radius-lg);
      background: var(--white);
      border: 1px solid var(--line);
      box-shadow: var(--shadow);
      display: grid;
      grid-template-columns: 1fr auto;
      gap: 24px;
      align-items: center;
    }
    .cta-panel h2 {
      margin: 0 0 8px;
      color: var(--ink);
      font-size: 30px;
      font-weight: 800;
      line-height: 1.28;
    }
    .cta-panel p {
      margin: 0;
      color: var(--muted);
      max-width: 760px;
    }
    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      justify-content: flex-end;
    }
    .site-footer {
      background: var(--dark);
      color: rgba(255,255,255,.74);
      padding: 54px 0 26px;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 1.2fr .8fr 1fr;
      gap: 34px;
      align-items: start;
    }
    .footer-brand {
      color: var(--white);
      font-size: 20px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-title {
      color: var(--white);
      font-size: 16px;
      font-weight: 800;
      margin-bottom: 12px;
    }
    .footer-grid p {
      margin: 0;
      font-size: 14px;
      line-height: 1.75;
    }
    .footer-links {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 8px 14px;
    }
    .footer-links a {
      color: rgba(255,255,255,.72);
      font-size: 14px;
      transition: color .2s ease;
    }
    .footer-links a:hover {
      color: var(--primary);
    }
    .copyright {
      margin-top: 34px;
      padding-top: 20px;
      border-top: 1px solid rgba(255,255,255,.1);
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      color: rgba(255,255,255,.58);
      font-size: 13px;
    }
    @media (max-width: 1024px) {
      .container {
        width: min(var(--container), calc(100% - 48px));
      }
      .nav-links {
        gap: 4px;
      }
      .nav-links a {
        padding: 9px 9px;
        font-size: 14px;
      }
      .guide-hero-grid,
      .guide-map,
      .scenario-layout,
      .faq-wrap {
        grid-template-columns: 1fr;
      }
      .quick-panel,
      .scenario-note {
        position: static;
      }
      .step-flow {
        grid-template-columns: repeat(2, 1fr);
      }
      .tips-grid {
        grid-template-columns: repeat(2, 1fr);
      }
      .footer-grid {
        grid-template-columns: 1fr 1fr;
      }
    }
    @media (max-width: 768px) {
      .container {
        width: min(var(--container), calc(100% - 32px));
      }
      .nav-wrap {
        height: 62px;
      }
      .brand-text {
        font-size: 16px;
      }
      .brand-mark {
        width: 36px;
        height: 36px;
        border-radius: 11px;
      }
      .menu-toggle {
        display: inline-block;
      }
      .nav-actions .btn {
        display: none;
      }
      .nav-links {
        position: absolute;
        left: 16px;
        right: 16px;
        top: 70px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
        padding: 14px;
        background: var(--white);
        border: 1px solid var(--line);
        border-radius: var(--radius-lg);
        box-shadow: var(--shadow-hover);
      }
      .nav-links.is-open {
        display: flex;
      }
      .nav-links a {
        padding: 12px 14px;
        border-radius: 12px;
      }
      .page-hero {
        padding: 38px 0 34px;
      }
      .hero-copy h1 {
        font-size: 34px;
      }
      .hero-copy p {
        font-size: 16px;
      }
      .hero-actions,
      .download-actions,
      .cta-actions {
        width: 100%;
      }
      .hero-actions .btn,
      .download-actions .btn,
      .cta-actions .btn {
        width: 100%;
      }
      .section {
        padding: 54px 0;
      }
      .section-tight {
        padding: 42px 0;
      }
      .section-head {
        display: block;
      }
      .section-title {
        font-size: 26px;
      }
      .guide-stats,
      .tips-grid {
        grid-template-columns: 1fr;
      }
      .featured-guide {
        min-height: auto;
      }
      .featured-guide h2,
      .download-strip h2,
      .cta-panel h2 {
        font-size: 24px;
      }
      .step-flow {
        grid-template-columns: 1fr;
      }
      .problem-row {
        grid-template-columns: 1fr;
      }
      .problem-cell:first-child {
        border-right: 0;
        border-bottom: 1px solid var(--line);
      }
      .download-strip,
      .cta-panel {
        grid-template-columns: 1fr;
        padding: 24px;
      }
      .download-actions {
        justify-content: stretch;
      }
      .footer-grid {
        grid-template-columns: 1fr;
      }
      .copyright {
        display: grid;
      }
    }
    @media (max-width: 520px) {
      .container {
        width: min(var(--container), calc(100% - 32px));
      }
      .brand-text {
        max-width: 180px;
        white-space: normal;
        line-height: 1.2;
      }
      .hero-copy h1 {
        font-size: 30px;
      }
      .quick-panel,
      .guide-card,
      .tip-card,
      .step-card {
        padding: 18px;
      }
      .featured-guide {
        padding: 22px;
      }
      .footer-links {
        grid-template-columns: 1fr;
      }
    }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}