/* roulang page: index */
:root { --primary: #D9FF3F; --dark: #0B0F0E; --light: #F6F7F2; --signal: #F0A35E; --text: #0B0F0E; --muted: rgba(11,15,14,.62); --line: rgba(11,15,14,.09); --line-dark: rgba(255,255,255,.12); --radius: 2px; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        html { scroll-behavior: smooth; }
        body { font-family: 'PingFang SC','HarmonyOS Sans SC','MiSans','Microsoft YaHei',system-ui,-apple-system,sans-serif; background: var(--light); color: var(--text); line-height: 1.85; -webkit-font-smoothing: antialiased; }
        img { max-width: 100%; height: auto; display: block; }
        a { color: inherit; text-decoration: none; }
        button { font-family: inherit; cursor: pointer; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
        .h1, .h2 { line-height: 1.2; font-weight: 700; }
        .label-en { font-size: .75rem; letter-spacing: .18em; text-transform: uppercase; }
        .hairline { border: 0; border-top: 1px solid var(--line); }
        /* header */
        .site-header { position: sticky; top: 0; z-index: 50; background: rgba(246,247,242,.88); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--line); height: 72px; transition: box-shadow .3s ease; }
        .site-header.scrolled { box-shadow: 0 8px 30px rgba(0,0,0,.04); }
        .nav-wrap { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .brand { font-size: 1.25rem; font-weight: 700; display: inline-flex; align-items: center; gap: 6px; text-decoration: none; color: var(--text); }
        .brand .dot { width: 6px; height: 6px; background: var(--primary); border-radius: 50%; display: inline-block; }
        .nav-links { display: flex; align-items: center; gap: 36px; list-style: none; }
        .nav-links a { font-size: .95rem; position: relative; padding: 6px 0; color: var(--text); text-decoration: none; transition: opacity .25s; opacity: .78; }
        .nav-links a:hover { opacity: 1; }
        .nav-links a.active::after { content: ''; position: absolute; left: 0; bottom: -2px; width: 22px; height: 2px; background: var(--primary); }
        .nav-cta { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0 28px; border: 1px solid rgba(11,15,14,.2); border-radius: var(--radius); font-size: .9rem; font-weight: 600; transition: all .25s ease; background: transparent; color: var(--text); text-decoration: none; }
        .nav-cta:hover { border-color: var(--dark); background: var(--dark); color: var(--light); }
        .nav-toggle { display: none; background: none; border: 0; font-size: 1.6rem; line-height: 1; color: var(--text); }
        /* hero */
        .hero { position: relative; background: var(--light); padding: 80px 0 96px; overflow: hidden; border-bottom: 1px solid var(--line); }
        .hero-bgword { position: absolute; top: -20px; right: -10px; font-size: 18vw; line-height: 1; font-weight: 800; letter-spacing: -.06em; color: var(--text); opacity: .04; pointer-events: none; user-select: none; }
        .hero-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 56px; align-items: center; position: relative; z-index: 2; }
        .hero .hero-content { animation: rise .7s ease both; }
        .hero h1 { font-size: clamp(2.6rem, 5.2vw, 4.4rem); line-height: 1.12; font-weight: 800; letter-spacing: -0.02em; margin: 18px 0 20px; }
        .hero .subtitle { font-size: 1.125rem; line-height: 1.85; color: var(--muted); max-width: 520px; margin-bottom: 36px; animation: rise .7s .15s ease both; }
        .hero-actions { display: flex; gap: 18px; align-items: center; animation: rise .7s .28s ease both; }
        .btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 0 28px; border-radius: 2px; font-size: .95rem; font-weight: 600; transition: all .25s ease; border: 1px solid transparent; }
        .btn .arrow { transition: transform .25s ease; }
        .btn:hover .arrow, .btn:focus-visible .arrow { transform: translateX(4px); }
        .btn-dark { background: var(--dark); color: #fff; }
        .btn-dark:hover { background: var(--primary); color: var(--dark); border-color: var(--primary); }
        .btn-outline { background: transparent; border-color: rgba(11,15,14,.25); color: var(--text); }
        .btn-outline:hover { border-color: var(--dark); background: transparent; color: var(--dark); }
        .hero-meta { display: flex; gap: 34px; margin-top: 46px; padding-top: 28px; border-top: 1px solid rgba(11,15,14,.08); animation: rise .7s .4s ease both; }
        .hero-meta .m-item .num { font-family: ui-monospace, Menlo, monospace; font-size: .8rem; font-weight: 600; color: var(--dark); opacity: .5; margin-right: 6px; }
        .hero-meta .m-item span { font-size: .9rem; color: var(--dark); opacity: .8; }
        @keyframes rise { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: translateY(0); } }
        /* sections */
        .section { padding: 112px 0; }
        .section-head { margin-bottom: 64px; }
        .sec-tag { display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .06em; padding: 5px 14px; background: rgba(217,255,63,.25); color: var(--dark); border-radius: 4px; margin-bottom: 18px; }
        .section-head h2 { font-size: clamp(1.65rem, 3vw, 2.6rem); line-height: 1.25; letter-spacing: -0.01em; font-weight: 800; }
        .section-head .desc { margin-top: 14px; color: var(--muted); font-size: 1.05rem; max-width: 680px; }
        /* features */
        .feature-list { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
        .feature-row { display: grid; grid-template-columns: 120px 1fr 2fr; gap: 28px; align-items: center; padding: 36px 0; border-bottom: 1px solid var(--line); transition: background .25s ease; }
        .feature-row:last-child { border-bottom: 0; }
        .feature-row .f-num { font-size: .85rem; font-weight: 600; font-family: ui-monospace, Menlo, monospace; color: var(--dark); opacity: .45; }
        .feature-row .f-title { font-size: clamp(1.15rem, 1.6vw, 1.4rem); font-weight: 700; }
        .feature-row .f-desc { font-size: .98rem; line-height: 1.75; color: var(--muted); }
        /* cover wall */
        .cover-grid { display: grid; grid-template-columns: repeat(12, 1fr); grid-auto-rows: 260px; gap: 12px; }
        .cover-col { position: relative; border-radius: 0; overflow: hidden; border: 1px solid rgba(11,15,14,.08); background: #e8eadf; }
        .cover-col img { width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease-out; }
        .cover-col:hover img { transform: scale(1.03); }
        .cover-col-lg { grid-column: span 7; }
        .cover-col-sm1 { grid-column: span 5; }
        .cover-col-sm2 { grid-column: span 5; }
        .cover-col .tag-overlay { position: absolute; left: 14px; bottom: 14px; background: rgba(11,15,14,.65); color: #fff; font-size: .78rem; padding: 6px 14px; border-radius: 3px; letter-spacing: .5px; line-height: 1.4; }
        /* CTA */
        .cta-section { background: var(--dark); color: #fff; padding: 100px 0; position: relative; overflow: hidden; }
        .cta-section::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 1px; background: rgba(255,255,255,.08); }
        .cta-grid { display: grid; grid-template-columns: 7fr 5fr; gap: 80px; align-items: center; }
        .cta-section h2 { font-size: clamp(1.6rem, 2.8vw, 2.4rem); font-weight: 700; line-height: 1.35; }
        .cta-section .desc { margin-top: 16px; color: rgba(255,255,255,.62); font-size: .98rem; line-height: 1.8; max-width: 480px; }
        .btn-primary-light { background: var(--primary); color: var(--dark); display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 30px; font-weight: 600; border-radius: 2px; border: 1px solid var(--primary); transition: all .25s ease; }
        .btn-primary-light:hover { background: var(--dark); color: var(--primary); border-color: var(--primary); }
        .cta-form { display: flex; flex-direction: column; gap: 12px; }
        .input-field { width: 100%; height: 48px; background: rgba(255,255,255,.05); border: 1px solid rgba(255,255,255,.16); border-radius: 2px; padding: 0 15px; font-size: .9rem; color: #fff; transition: border .2s ease, box-shadow .2s; }
        .input-field:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 2px rgba(217,255,63,.12); }
        .input-field::placeholder { color: rgba(255,255,255,.4); }
        .cta-note { font-size: .78rem; color: rgba(255,255,255,.32); margin-top: 4px; }
        /* FAQ */
        .faq-list { border-bottom: 1px solid var(--line); }
        .faq-item { border-top: 1px solid var(--line); }
        .faq-q { display: flex; justify-content: space-between; align-items: center; padding: 22px 8px; cursor: pointer; font-weight: 600; font-size: 1rem; background: transparent; border: 0; width: 100%; text-align: left; gap: 24px; }
        .faq-q:hover { color: var(--dark); }
        .faq-q::after { content: '+'; font-size: 1.5rem; font-weight: 400; color: var(--muted); transition: transform .25s ease; flex-shrink: 0; }
        .faq-item.open .faq-q::after { transform: rotate(45deg); }
        .faq-a { max-height: 0; overflow: hidden; transition: max-height .35s ease, padding .2s ease; padding-left: 8px; padding-right: 8px; }
        .faq-item.open .faq-a { max-height: 240px; overflow-y: auto; }
        .faq-a p { font-size: .94rem; color: var(--muted); line-height: 1.75; padding-bottom: 18px; }
        /* cms */
        .news-section { background: #fff; }
        .news-item { border-top: 1px solid var(--line); display: flex; align-items: baseline; justify-content: space-between; gap: 16px; padding: 20px 4px; transition: .2s; }
        .news-item:last-child { border-bottom: 1px solid var(--line); }
        .news-item:hover .news-title { color: var(--dark); }
        .news-title { font-weight: 600; transition: .2s; font-size: 1rem; }
        .news-meta { color: var(--muted); font-size: .82rem; flex-shrink: 0; }
        /* footer */
        .footer { background: var(--dark); color: rgba(255,255,255,.7); padding: 80px 0 32px; }
        .footer-brand { color: #fff; font-size: 1.25rem; font-weight: 700; display: flex; align-items: center; gap: 8px; }
        .footer-brand .ft-status-dot { display: inline-block; width: 6px; height: 6px; background: var(--primary); border-radius: 99px; }
        .footer .ft-content { display: flex; justify-content: space-between; gap: 80px; flex-wrap: wrap; padding-bottom: 44px; border-bottom: 1px solid rgba(255,255,255,.06); margin-bottom: 22px; }
        .footer .ft-desc { color: rgba(255,255,255,.5); font-size: .88rem; max-width: 300px; margin-top: 14px; line-height: 1.8; }
        .footer .ft-links { display: flex; gap: 60px; flex-wrap: wrap; }
        .footer .ft-links .link-group-title { color: rgba(255,255,255,.9); font-size: .92rem; margin-bottom: 12px; }
        .footer .ft-links ul { list-style: none; }
        .footer .ft-links li { margin-bottom: 6px; }
        .footer .ft-links a { color: rgba(255,255,255,.55); transition: .2s; font-size: .9rem; }
        .footer .ft-links a:hover { color: var(--primary); }
        .footer-bottom { display: flex; align-items: center; justify-content: space-between; font-size: .85rem; color: rgba(255,255,255,.4); flex-wrap: wrap; gap: 8px; }
        /* masonry / shared banner */
        .empty-news .empty-mark { padding: 44px 20px; text-align: center; border: 1px solid rgba(11,15,14,.08); }
        /* countdown */
        .countdown-bar { background: var(--dark); color: #fff; padding: 12px 0; min-height: 56px; font-size: .9rem; position: relative; }
        .countdown-bar .cd-flex { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
        .countdown-bar .dot-pulse { display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--primary); margin-right: 8px; animation: pulse 2.2s infinite; vertical-align: middle; }
        @keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: .2; } }
        .cd-block { display: inline-flex; align-items: baseline; gap: 2px; flex-wrap: wrap; }
        .cd-num { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 1rem; font-weight: 600; color: var(--primary); }
        .cd-sep { color: rgba(255,255,255,.55); font-weight: 300; }
        .cd-label { color: rgba(255,255,255,.5); font-size: .72rem; margin-left: 7px; margin-right: 4px; }
        /* utilities */
        .bg-white { background-color: #fff; }
        .text-ink { color: var(--dark); }
        .text-muted { color: var(--muted); }
        .mt-1 { margin-top: 8px; }
        .mt-4 { margin-top: 32px; }
        .w-full { width: 100%; }
        @media (max-width: 1023.98px) {
            .nav-links { display: none; }
            .nav-toggle { display: block; }
            .nav-cta { display: none; }
            .nav-links.open { display: flex; position: absolute; top: 72px; left: 0; right: 0; background: #fff; border-bottom: 1px solid var(--line); flex-direction: column; padding: 14px 24px; gap: 6px; align-items: stretch; box-shadow: 0 20px 40px rgba(0,0,0,.05); z-index: 99; }
            .nav-links.open a { padding: 13px 12px; display: block; border-bottom: 1px solid rgba(11,15,14,.06); }
            .hero-grid { grid-template-columns: 1fr; gap: 30px; }
            .cta-grid { grid-template-columns: 1fr; gap: 40px; }
            .feature-row { grid-template-columns: 1fr; gap: 6px; padding: 24px 0; }
        }
        @media (max-width: 767.98px) {
            .section { padding: 70px 0; }
            .hero { padding: 50px 0 60px; }
            .cover-grid { grid-template-columns: 1fr; grid-auto-rows: 200px; }
            .cover-col-lg, .cover-col-sm1 { grid-column: span 1; }
            .cover-col-sm2 { grid-column: span 1; }
            .filter-none { }
            .hero-actions { flex-direction: row; flex-wrap: wrap; gap: 12px; }
            .btn-outline, .btn-dark { flex: 1; min-width: 130px; }
            .hero-meta { flex-direction: column; gap: 10px; }
            .cd-flex { flex-direction: column; justify-content: center; gap: 4px; }
        }
        /* focus */
        a:focus-visible, .faq-q:focus-visible, button:focus-visible, .btn:focus-visible {
            outline: 2px solid var(--primary); outline-offset: 3px;
        }
        @media (prefers-reduced-motion: reduce) {
            *, *::before, *::after { animation-duration: 0s !important; transition-duration: 0s !important; }
            html { scroll-behavior: auto; }
            .hero-bgword, .countdown-bar .dot-pulse { animation: none !important; }
        }

/* roulang page: article */
:root {
        --bg: #F6F7F2;
        --surface: #FFFFFF;
        --ink: #0B0F0E;
        --muted: rgba(11, 15, 14, 0.62);
        --line: rgba(11, 15, 14, 0.12);
        --line-white: rgba(255, 255, 255, 0.14);
        --lime: #D9FF3F;
        --ember: #F0A35E;
        --container: 1200px;
        --radius: 2px;
        --shadow-soft: 0 18px 50px rgba(11, 15, 14, 0.08);
    }

    html {
        scroll-behavior: smooth;
    }

    body {
        margin: 0;
        background: var(--bg);
        color: var(--ink);
        font-family: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
        line-height: 1.85;
        font-size: 16px;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }

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

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

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

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

    ul,
    ol {
        margin: 0;
        padding: 0;
    }

    ::selection {
        background: var(--lime);
        color: var(--ink);
    }

    .container {
        width: 100%;
        max-width: var(--container);
        margin: 0 auto;
        padding-left: 20px;
        padding-right: 20px;
    }

    section,
    footer,
    header {
        scroll-margin-top: 80px;
    }

    .site-header {
        position: sticky;
        top: 0;
        z-index: 80;
        background: rgba(246, 247, 242, 0.88);
        -webkit-backdrop-filter: blur(14px);
        backdrop-filter: blur(14px);
        border-bottom: 1px solid rgba(11, 15, 14, 0.08);
        transition: box-shadow .3s ease, border-color .3s ease, background .3s ease;
    }

    .site-header.is-scrolled {
        background: rgba(246, 247, 242, 0.94);
        box-shadow: 0 10px 36px rgba(11, 15, 14, 0.06);
    }

    .nav-wrap {
        height: 72px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 22px;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 7px;
        font-size: 1.2rem;
        font-weight: 700;
        letter-spacing: -0.01em;
        line-height: 1.2;
        white-space: nowrap;
    }

    .brand .dot {
        width: 6px;
        height: 6px;
        border-radius: 999px;
        background: var(--lime);
        box-shadow: 0 0 0 3px rgba(217, 255, 63, 0.22);
        flex: none;
    }

    .nav-links {
        display: flex;
        align-items: center;
        justify-content: flex-end;
        gap: 30px;
        margin-right: 4px;
        margin-left: auto;
    }

    .nav-links a {
        position: relative;
        display: inline-block;
        padding: 6px 0 4px;
        font-size: 0.93rem;
        color: var(--ink);
        letter-spacing: 0.02em;
        transition: color .2s ease;
        outline: none;
    }

    .nav-links a:hover {
        color: var(--ink);
        opacity: 0.7;
    }

    .nav-links a:focus-visible {
        outline: 2px solid var(--lime);
        outline-offset: 6px;
    }

    .nav-links a.active::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 0;
        width: 20px;
        height: 2px;
        background: var(--lime);
    }

    .nav-cta {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 42px;
        padding: 0 18px;
        border: 1px solid rgba(11, 15, 14, 0.24);
        border-radius: var(--radius);
        font-size: 0.9rem;
        font-weight: 600;
        white-space: nowrap;
        color: var(--ink);
        transition: border-color .2s ease, background .2s ease, color .2s ease;
    }

    .nav-cta:hover,
    .nav-cta:focus-visible {
        border-color: var(--ink);
        background: var(--ink);
        color: #fff;
    }

    .nav-toggle {
        display: none;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        background: transparent;
        border: 0;
        padding: 0;
        font-size: 1.3rem;
        border-radius: var(--radius);
        cursor: pointer;
        color: var(--ink);
        transition: background .2s ease;
    }

    .nav-toggle:hover {
        background: rgba(11, 15, 14, 0.06);
    }

    .nav-toggle:focus-visible {
        outline: 2px solid var(--lime);
        outline-offset: 2px;
    }

    .page-breadcrumb {
        padding-top: 42px;
        color: var(--muted);
        font-size: 0.86rem;
    }

    .breadcrumb-list {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 10px;
        list-style: none;
    }

    .breadcrumb-list li {
        display: inline-flex;
        align-items: center;
        gap: 10px;
    }

    .breadcrumb-list li + li::before {
        content: "/";
        color: rgba(11, 15, 14, 0.3);
    }

    .breadcrumb-list a {
        color: var(--ink);
        opacity: 0.72;
        transition: opacity .2s ease, color .2s ease;
    }

    .breadcrumb-list a:hover {
        opacity: 1;
        color: var(--ink);
    }

    .breadcrumb-list li:last-child {
        color: var(--ink);
        font-weight: 500;
        opacity: 1;
        max-width: 76ch;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .article-layout {
        display: block;
        padding-top: 26px;
        padding-bottom: 80px;
    }

    .article-header {
        margin-bottom: 48px;
        animation: articleFadeUp .6s ease both;
    }

    .article-kicker {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        margin-bottom: 18px;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.2em;
        text-transform: uppercase;
        color: var(--muted);
    }

    .article-kicker::before {
        content: "";
        width: 26px;
        height: 1px;
        background: var(--lime);
    }

    .article-header h1 {
        max-width: 16em;
        margin: 0 0 20px;
        font-size: clamp(2rem, 4.4vw, 3.5rem);
        line-height: 1.16;
        font-weight: 700;
        letter-spacing: -0.025em;
        word-break: break-word;
    }

    .article-meta-row {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 14px 22px;
        color: var(--muted);
        font-size: 0.88rem;
    }

    .article-meta-row span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .meta-sep {
        width: 3px;
        height: 3px;
        border-radius: 999px;
        background: rgba(11, 15, 14, 0.35);
    }

    .post-tag {
        display: inline-flex;
        align-items: center;
        min-height: 26px;
        padding: 0 10px;
        border: 1px solid rgba(11, 15, 14, 0.18);
        border-radius: 999px;
        font-size: 0.76rem;
        letter-spacing: 0.06em;
        color: var(--ink);
        background: #fff;
    }

    .article-lead {
        position: relative;
        max-width: 860px;
        margin: 0 0 56px;
        padding: 18px 22px;
        background: rgba(11, 15, 14, 0.035);
        border-left: 2px solid var(--lime);
        color: rgba(11, 15, 14, 0.78);
        font-size: 1rem;
        line-height: 1.9;
        border-radius: 0 2px 2px 0;
    }

    .article-width {
        max-width: 860px;
        margin-left: auto;
        margin-right: auto;
    }

    .article-body {
        font-size: 1.04rem;
        line-height: 2;
        color: #1F241F;
        overflow-wrap: break-word;
        animation: articleFadeUp .6s ease .08s both;
    }

    .article-body p {
        margin: 0 0 1.6em;
        letter-spacing: 0.01em;
    }

    .article-body h2,
    .article-body h3 {
        color: var(--ink);
        font-weight: 700;
        letter-spacing: -0.01em;
        scroll-margin-top: 96px;
    }

    .article-body h2 {
        margin: 2.7em 0 1em;
        font-size: 1.65rem;
        line-height: 1.4;
        padding-top: 0.3em;
        border-top: 1px solid var(--line);
    }

    .article-body h3 {
        margin: 2.2em 0 0.8em;
        font-size: 1.28rem;
        line-height: 1.5;
    }

    .article-body ul,
    .article-body ol {
        margin: 0 0 1.7em;
        padding-left: 1.4em;
        color: #232923;
    }

    .article-body li {
        margin-bottom: 0.55em;
        padding-left: 0.4em;
    }

    .article-body blockquote {
        margin: 2em 0;
        padding: 4px 0 4px 22px;
        border-left: 2px solid var(--lime);
        color: rgba(11, 15, 14, 0.72);
        font-size: 1rem;
        background: transparent;
    }

    .article-body a {
        color: var(--ink);
        border-bottom: 1px solid rgba(11, 15, 14, 0.32);
        transition: border-color .2s ease, color .2s ease;
    }

    .article-body a:hover {
        border-bottom-color: var(--lime);
        color: var(--ink);
    }

    .article-body img {
        margin: 2.2em 0 0.6em;
        width: auto;
        max-width: 100%;
        border: 1px solid var(--line);
        border-radius: 0;
    }

    .article-body figcaption {
        margin-bottom: 1.5em;
        font-size: 0.84rem;
        color: var(--muted);
    }

    .article-body hr {
        border: 0;
        border-top: 1px solid var(--line);
        margin: 3em 0;
    }

    .empty-article {
        min-height: 200px;
        padding: 60px 24px;
        text-align: center;
        background: var(--surface);
        border: 1px solid var(--line);
        margin: 20px 0 56px;
    }

    .empty-article p {
        margin: 0 0 22px;
        font-size: 1.05rem;
    }

    .button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 8px;
        min-height: 48px;
        padding: 0 24px;
        border-radius: var(--radius);
        border: 1px solid transparent;
        font-weight: 600;
        line-height: 1.2;
        font-size: 0.94rem;
        cursor: pointer;
        transition: transform .2s ease, border-color .25s ease, background .25s ease, color .25s ease, opacity .25s ease;
        white-space: nowrap;
    }

    .button:focus-visible {
        outline: 2px solid var(--lime);
        outline-offset: 3px;
    }

    .button-ink {
        background: var(--ink);
        border-color: var(--ink);
        color: #fff;
    }

    .button-ink:hover {
        background: transparent;
        border-color: var(--ink);
        color: var(--ink);
    }

    .button-lime {
        background: var(--lime);
        border-color: var(--lime);
        color: var(--ink);
    }

    .button-lime:hover {
        background: transparent;
        border-color: var(--lime);
        color: var(--lime);
    }

    .button-outline {
        background: transparent;
        border-color: rgba(11, 15, 14, 0.28);
        color: var(--ink);
    }

    .button-outline:hover {
        border-color: var(--ink);
        background: var(--ink);
        color: #fff;
    }

    .button-arrow {
        transition: transform .2s ease;
    }

    .button:hover .button-arrow,
    .button:focus-visible .button-arrow {
        transform: translateX(4px);
    }

    .article-pager {
        display: grid;
        grid-template-columns: 1fr;
        gap: 1px;
        margin: 70px 0 56px;
        background: var(--line);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
    }

    .pager-card {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 20px;
        min-height: 78px;
        padding: 18px 22px;
        background: var(--surface);
        color: var(--ink);
        transition: background .22s ease, color .22s ease;
    }

    .pager-card:hover,
    .pager-card:focus-visible {
        background: var(--ink);
        color: #fff;
    }

    .pager-card small {
        display: block;
        color: var(--muted);
        font-size: 0.82rem;
        margin-bottom: 2px;
        transition: color .22s ease;
    }

    .pager-card:hover small {
        color: rgba(255, 255, 255, 0.55);
    }

    .pager-card span {
        font-weight: 600;
    }

    .pager-more {
        font-size: 1.3rem;
        line-height: 1;
    }

    .cta-strip {
        position: relative;
        background: var(--ink);
        color: #fff;
    }

    .cta-strip::before {
        content: "";
        position: absolute;
        inset: 0;
        pointer-events: none;
        opacity: 0.15;
        background-image: url('/assets/images/backpic/back-2.webp');
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }

    .cta-wrap {
        position: relative;
        z-index: 1;
        display: grid;
        grid-template-columns: 1fr;
        gap: 32px;
        align-items: center;
        padding-top: 72px;
        padding-bottom: 72px;
    }

    .cta-title {
        margin: 0 0 12px;
        font-size: clamp(1.6rem, 3vw, 2.6rem);
        line-height: 1.25;
        font-weight: 700;
        letter-spacing: -0.02em;
    }

    .cta-desc {
        margin: 0;
        max-width: 40em;
        color: rgba(255, 255, 255, 0.65);
        font-size: 0.97rem;
        line-height: 1.9;
    }

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

    .cta-note {
        margin-top: 18px;
        font-size: 0.8rem;
        color: rgba(255, 255, 255, 0.42);
    }

    .content-section {
        padding: 88px 0;
    }

    .section-head {
        margin-bottom: 48px;
    }

    .section-eyebrow {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 0.75rem;
        font-weight: 600;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--muted);
        margin-bottom: 12px;
    }

    .section-eyebrow span {
        display: inline-block;
        width: 42px;
        height: 1px;
        background: var(--lime);
    }

    .section-title {
        margin: 0;
        font-size: clamp(1.5rem, 2.8vw, 2.2rem);
        line-height: 1.3;
        letter-spacing: -0.02em;
    }

    .related-list {
        list-style: none;
        margin: 0;
        padding: 0;
        border-top: 1px solid var(--line);
    }

    .related-list li {
        border-bottom: 1px solid var(--line);
    }

    .related-list li + li {
        margin-top: 0;
        padding: 0;
    }

    .related-link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 22px;
        padding: 20px 4px 18px 0;
        transition: background .2s ease, padding .2s ease;
    }

    .related-link:hover {
        padding-left: 8px;
    }

    .related-info {
        display: flex;
        flex-direction: column;
        gap: 5px;
        min-width: 0;
    }

    .related-info strong {
        font-size: 1.05rem;
        font-weight: 600;
        line-height: 1.55;
        color: var(--ink);
        transition: color .2s ease;
    }

    .related-meta {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 12px;
        font-size: 0.82rem;
        color: var(--muted);
    }

    .related-meta span {
        display: inline-flex;
        align-items: center;
        gap: 6px;
    }

    .related-arrow {
        font-size: 1.3rem;
        color: var(--ink);
        transform: translateX(0);
        transition: transform .2s ease;
        flex: none;
    }

    .related-link:hover .related-arrow {
        transform: translateX(6px);
    }

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

    .faq-list {
        max-width: 900px;
        margin: 0 auto;
    }

    .faq-item {
        border-bottom: 1px solid var(--line);
    }

    .faq-item summary {
        list-style: none;
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        padding: 24px 4px;
        cursor: pointer;
        user-select: none;
        transition: color .2s ease;
    }

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

    .faq-item summary:hover {
        color: var(--ink);
    }

    .faq-item summary:hover .faq-question-arrow {
        background: var(--ink);
        color: var(--lime);
    }

    .faq-item summary:focus-visible {
        outline: 2px solid var(--lime);
        outline-offset: 4px;
    }

    .faq-question {
        font-weight: 600;
        font-size: 1.06rem;
        line-height: 1.6;
        flex: 1;
    }

    .faq-question-arrow {
        position: relative;
        width: 36px;
        height: 36px;
        flex: none;
        border: 1px solid rgba(11, 15, 14, 0.16);
        border-radius: 999px;
        color: var(--ink);
        display: inline-flex;
        align-items: center;
        justify-content: center;
        transition: background .2s ease, color .2s ease, transform .25s ease, border-color .2s ease;
    }

    .faq-question-arrow::after {
        content: "+";
        font-size: 1.3rem;
        line-height: 1;
        transition: transform .25s ease;
    }

    .faq-item[open] .faq-question-arrow {
        background: var(--lime);
        border-color: var(--lime);
        color: var(--ink);
        transform: rotate(45deg);
    }

    .faq-answer {
        padding: 0 0 26px;
        color: rgba(11, 15, 14, 0.68);
        font-size: 0.97rem;
        line-height: 1.9;
        max-width: 760px;
    }

    .faq-answer p {
        margin: 0 0 12px;
    }

    .faq-answer p:last-child {
        margin-bottom: 0;
    }

    .footer {
        background: var(--ink);
        color: rgba(255, 255, 255, 0.78);
    }

    .footer a {
        color: rgba(255, 255, 255, 0.68);
        transition: color .2s ease, opacity .2s ease;
    }

    .footer a:hover,
    .footer a:focus-visible {
        color: var(--lime);
        outline: none;
    }

    .footer a:focus-visible {
        outline: 2px solid var(--lime);
        outline-offset: 4px;
    }

    .ft-content {
        display: grid;
        grid-template-columns: 1fr;
        gap: 42px;
        padding: 70px 0 44px;
    }

    .footer-brand {
        display: inline-flex;
        align-items: center;
        gap: 9px;
        color: #fff;
        font-size: 1.35rem;
        font-weight: 700;
        letter-spacing: -0.01em;
        line-height: 1.3;
    }

    .ft-status-dot {
        width: 7px;
        height: 7px;
        border-radius: 999px;
        background: var(--lime);
        box-shadow: 0 0 0 4px rgba(217, 255, 63, 0.12);
    }

    .ft-desc {
        max-width: 34em;
        margin: 18px 0 0;
        color: rgba(255, 255, 255, 0.5);
        font-size: 0.95rem;
        line-height: 1.9;
    }

    .ft-links {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 30px;
    }

    .link-group-title {
        margin-bottom: 14px;
        color: rgba(255, 255, 255, 0.34);
        font-size: 0.78rem;
        font-weight: 600;
        letter-spacing: 0.14em;
        text-transform: uppercase;
    }

    .ft-links ul {
        list-style: none;
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin: 0;
    }

    .ft-links li {
        margin: 0;
        padding: 0;
    }

    .ft-links a {
        display: inline-block;
        padding: 2px 0;
        font-size: 0.92rem;
    }

    .footer-bottom {
        display: flex;
        flex-wrap: wrap;
        gap: 12px 30px;
        justify-content: space-between;
        padding: 26px 0 34px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        color: rgba(255, 255, 255, 0.42);
        font-size: 0.82rem;
    }

    @media (min-width: 640px) {
        .article-layout {
            padding-bottom: 104px;
        }

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

        .cta-wrap {
            grid-template-columns: 1fr 1fr;
            gap: 48px;
        }

        .footer-bottom {
            align-items: center;
        }
    }

    @media (min-width: 768px) {
        .nav-wrap {
            height: 72px;
        }

        .ft-content {
            grid-template-columns: 1.15fr 1fr;
            gap: 80px;
        }
    }

    @media (max-width: 767px) and (min-width: 641px) {
        .nav-links {
            gap: 22px;
        }
    }

    @media (max-width: 767px) {
        .site-header {
            border-bottom-color: rgba(11, 15, 14, 0.08);
        }

        .nav-wrap {
            height: 60px;
        }

        .nav-toggle {
            display: inline-flex;
            order: 3;
        }

        .nav-links {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            flex-direction: column;
            align-items: stretch;
            justify-content: center;
            gap: 2px;
            max-height: 0;
            overflow: hidden;
            background: rgba(246, 247, 242, 0.98);
            border-bottom: 1px solid transparent;
            box-shadow: var(--shadow-soft);
            transition: max-height .3s ease, padding .3s ease;
            -webkit-backdrop-filter: blur(18px);
            backdrop-filter: blur(18px);
        }

        .site-header.is-open .nav-links {
            max-height: 480px;
            padding: 16px 20px 20px;
            border-bottom-color: rgba(11, 15, 14, 0.08);
        }

        .nav-links a {
            display: block;
            padding: 14px 4px;
            font-size: 1rem;
            border-bottom: 1px solid rgba(11, 15, 14, 0.06);
        }

        .nav-links a.active::after {
            display: none;
        }

        .nav-links a.active {
            color: var(--ink);
            font-weight: 600;
        }

        .nav-cta {
            order: 2;
            min-height: 38px;
            padding: 0 14px;
            font-size: 0.84rem;
        }
    }

    @media (min-width: 1024px) {
        .cta-wrap {
            padding-top: 96px;
            padding-bottom: 96px;
        }

        .content-section {
            padding: 112px 0;
        }

        .article-layout {
            padding-top: 44px;
            padding-bottom: 120px;
        }
    }

    @media (max-width: 520px) {
        .page-breadcrumb {
            padding-top: 28px;
        }

        .article-header h1 {
            font-size: 1.75rem;
        }

        .article-lead {
            padding: 16px 16px;
        }

        .pager-card {
            flex-direction: column;
            align-items: flex-start;
            gap: 4px;
            padding: 18px 18px;
        }

        .pager-more {
            display: none;
        }

        .cta-actions {
            width: 100%;
        }

        .cta-actions .button {
            width: 100%;
        }

        .ft-content {
            padding-top: 52px;
            gap: 36px;
        }

        .ft-links {
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

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

    @keyframes articleFadeUp {
        0% {
            opacity: 0;
            transform: translateY(14px);
        }
        100% {
            opacity: 1;
            transform: translateY(0);
        }
    }

    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }

        *,
        *::before,
        *::after {
            animation: none !important;
            transition: none !important;
        }

        .cta-strip::before {
            background-attachment: scroll;
        }
    }

/* roulang page: category1 */
:root {
            --lp-bg: #F6F7F2;
            --lp-panel: #FFFFFF;
            --lp-dark: #0B0F0E;
            --lp-accent: #D9FF3F;
            --lp-orange: #F0A35E;
            --lp-text: rgba(11, 15, 14, .88);
            --lp-muted: rgba(11, 15, 14, .62);
            --lp-faint: rgba(11, 15, 14, .4);
            --lp-line: rgba(11, 15, 14, .1);
            --lp-line-dark: rgba(255, 255, 255, .14);
            --lp-white: #FFFFFF;
            --shadow-soft: 0 18px 40px rgba(11, 15, 14, .05);
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            scroll-padding-top: 96px;
            -webkit-text-size-adjust: 100%;
        }

        body {
            margin: 0;
            background: var(--lp-bg);
            color: var(--lp-text);
            font-family: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei",
                -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            line-height: 1.85;
            font-size: 1rem;
        }

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

        figure {
            margin: 0;
        }

        p {
            margin: 0;
        }

        h1,
        h2,
        h3 {
            margin: 0;
            line-height: 1.2;
            text-wrap: balance;
        }

        ul,
        ol,
        dl,
        dd {
            margin: 0;
            padding: 0;
        }

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

        button {
            font: inherit;
            border: 0;
            background: none;
            cursor: pointer;
        }

        a:focus-visible,
        button:focus-visible,
        summary:focus-visible {
            outline: 2px solid var(--lp-accent);
            outline-offset: 3px;
            border-radius: 2px;
        }

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

        @media (min-width: 768px) {
            .container {
                padding-inline: 40px;
            }
        }

        /* ------------------------------------------------------------
        Header
        ------------------------------------------------------------ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            height: 72px;
            background: rgba(246, 247, 242, .86);
            -webkit-backdrop-filter: blur(14px);
            backdrop-filter: blur(14px);
            border-bottom: 1px solid transparent;
            transition: border-color .25s, box-shadow .25s;
        }

        .site-header.is-scrolled {
            border-bottom-color: var(--lp-line);
            box-shadow: 0 6px 24px rgba(11, 15, 14, .04);
        }

        .nav-wrap {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .brand {
            display: inline-flex;
            align-items: baseline;
            gap: 7px;
            font-size: 1.15rem;
            font-weight: 700;
            letter-spacing: -0.02em;
            color: var(--lp-dark);
            white-space: nowrap;
        }

        .brand .dot {
            width: 6px;
            height: 6px;
            border-radius: 999px;
            background: var(--lp-accent);
            box-shadow: 0 0 0 3px rgba(217, 255, 63, .25);
            display: inline-block;
            transform: translateY(-1px);
        }

        .nav-links {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            gap: 34px;
            margin-left: auto;
            margin-right: 28px;
        }

        .nav-links a {
            position: relative;
            display: inline-flex;
            align-items: center;
            min-height: 44px;
            font-size: .96rem;
            color: rgba(11, 15, 14, .66);
            transition: color .2s;
        }

        .nav-links a:hover {
            color: var(--lp-dark);
        }

        .nav-links a.active {
            color: var(--lp-dark);
            font-weight: 600;
        }

        .nav-links a.active::after {
            content: "";
            position: absolute;
            left: 0;
            bottom: 2px;
            width: 22px;
            height: 3px;
            background: var(--lp-accent);
            border-radius: 0;
        }

        .nav-cta {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 42px;
            padding: 0 20px;
            border: 1px solid rgba(11, 15, 14, .18);
            border-radius: 2px;
            font-size: .9rem;
            font-weight: 600;
            color: var(--lp-dark);
            white-space: nowrap;
            transition: background .2s, color .2s, border-color .2s;
        }

        .nav-cta:hover {
            background: var(--lp-dark);
            border-color: var(--lp-dark);
            color: var(--lp-white);
        }

        .nav-toggle {
            display: none;
            width: 44px;
            height: 44px;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--lp-dark);
            border-radius: 2px;
        }

        @media (max-width: 1023px) {
            .site-header {
                height: 60px;
            }

            .nav-toggle {
                display: inline-flex;
            }

            .nav-links {
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                display: none;
                flex-direction: column;
                align-items: stretch;
                gap: 0;
                margin: 0;
                padding: 6px 20px 14px;
                background: var(--lp-panel);
                border-bottom: 1px solid var(--lp-line);
                box-shadow: var(--shadow-soft);
            }

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

            .nav-links a {
                width: 100%;
                padding: 13px 0;
                justify-content: flex-start;
                border-bottom: 1px solid var(--lp-line);
                font-size: 1rem;
            }

            .nav-links a.active::after {
                left: 0;
                bottom: 6px;
            }
        }

        @media (max-width: 520px) {
            .nav-cta {
                display: none;
            }
        }

        /* ------------------------------------------------------------
        Shared sections
        ------------------------------------------------------------ */
        .pad-block {
            padding: 96px 0;
        }

        .bg-white {
            background: var(--lp-panel);
        }

        .hairline-top {
            border-top: 1px solid var(--lp-line);
        }

        .hairline-bottom {
            border-bottom: 1px solid var(--lp-line);
        }

        .eyebrow {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .18em;
            text-transform: uppercase;
            color: var(--lp-muted);
        }

        .eyebrow::before {
            content: "";
            width: 26px;
            height: 1px;
            background: var(--lp-dark);
        }

        .on-dark .eyebrow {
            color: rgba(255, 255, 255, .58);
        }

        .on-dark .eyebrow::before {
            background: rgba(255, 255, 255, .7);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-height: 48px;
            padding: 0 30px;
            border-radius: 2px;
            font-weight: 600;
            font-size: .98rem;
            border: 1px solid transparent;
            white-space: nowrap;
            transition: background .2s, color .2s, border-color .2s;
        }

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

        .btn-dark:hover {
            background: var(--lp-accent);
            border-color: var(--lp-accent);
            color: var(--lp-dark);
        }

        .btn-outline {
            background: transparent;
            color: var(--lp-dark);
            border-color: rgba(11, 15, 14, .22);
        }

        .btn-outline:hover {
            background: var(--lp-dark);
            border-color: var(--lp-dark);
            color: var(--lp-white);
        }

        .btn-accent {
            background: var(--lp-accent);
            border-color: var(--lp-accent);
            color: var(--lp-dark);
        }

        .btn-accent:hover {
            background: var(--lp-dark);
            border-color: var(--lp-dark);
            color: var(--lp-accent);
        }

        .btn-ghost-light {
            background: transparent;
            color: rgba(255, 255, 255, .88);
            border-color: rgba(255, 255, 255, .28);
        }

        .btn-ghost-light:hover {
            border-color: var(--lp-accent);
            color: var(--lp-accent);
        }

        .arrow-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--lp-dark);
            transition: gap .2s;
        }

        .arrow-link:hover {
            gap: 12px;
        }

        /* ------------------------------------------------------------
        Hero
        ------------------------------------------------------------ */
        .hero {
            position: relative;
            overflow: hidden;
            background: var(--lp-bg);
            border-bottom: 1px solid var(--lp-line);
        }

        .hero-watermark {
            position: absolute;
            top: 10px;
            right: -10px;
            font-size: clamp(10rem, 18vw, 19rem);
            font-weight: 800;
            line-height: 1;
            color: rgba(11, 15, 14, .04);
            letter-spacing: -.08em;
            pointer-events: none;
            user-select: none;
        }

        .hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr;
            gap: 56px;
            align-items: center;
            padding-top: 72px;
            padding-bottom: 80px;
        }

        .hero h1 {
            margin-top: 24px;
            font-size: clamp(2.6rem, 5.5vw, 4.6rem);
            line-height: 1.08;
            font-weight: 700;
            letter-spacing: -.04em;
            color: var(--lp-dark);
        }

        .hero-lead {
            max-width: 58ch;
            margin-top: 26px;
            color: var(--lp-muted);
            font-size: 1.02rem;
            line-height: 1.9;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 36px;
        }

        .hero-mini {
            margin-top: 48px;
            border-top: 1px solid var(--lp-line);
        }

        .hero-mini>div {
            display: grid;
            grid-template-columns: 44px 1fr;
            column-gap: 14px;
            align-items: center;
            padding: 18px 0;
            border-bottom: 1px solid var(--lp-line);
        }

        .hero-mini span {
            grid-row: 1 / 3;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
            font-size: .82rem;
            color: var(--lp-faint);
        }

        .hero-mini b {
            font-size: 1rem;
            font-weight: 600;
            color: var(--lp-dark);
        }

        .hero-mini em {
            font-style: normal;
            font-size: .875rem;
            color: var(--lp-muted);
        }

        .hero-media {
            position: relative;
        }

        .hero-media-frame {
            position: relative;
            aspect-ratio: 1 / 1.02;
            overflow: hidden;
            border: 1px solid var(--lp-line);
            background: #eef0e8;
        }

        .hero-media-frame img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .5s ease-out;
        }

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

        .media-label {
            position: absolute;
            left: 14px;
            bottom: 14px;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 11px 15px;
            background: rgba(11, 15, 14, .8);
            color: var(--lp-white);
            font-size: .8rem;
            letter-spacing: .04em;
        }

        .media-label::before {
            content: "";
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--lp-accent);
        }

        .hero-media figcaption {
            max-width: 46ch;
            margin-top: 14px;
            font-size: .875rem;
            color: var(--lp-muted);
            line-height: 1.7;
        }

        @media (min-width: 1024px) {
            .hero-inner {
                grid-template-columns: minmax(0, 1.28fr) minmax(0, .9fr);
                gap: 78px;
                padding-top: 100px;
                padding-bottom: 112px;
            }

            .hero-mini {
                margin-top: 60px;
            }
        }

        /* ------------------------------------------------------------
        Guide section
        ------------------------------------------------------------ */
        .guide-section {
            background: var(--lp-panel);
            border-top: 1px solid var(--lp-line);
            padding: 104px 0 88px;
        }

        .guide-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 52px;
        }

        .guide-aside {
            align-self: start;
        }

        .aside-sticky {
            position: sticky;
            top: 104px;
        }

        .aside-desc {
            margin-top: 14px;
            color: var(--lp-muted);
            max-width: 32ch;
            font-size: .95rem;
        }

        .anchor-list {
            margin-top: 30px;
            border-top: 1px solid var(--lp-line);
        }

        .anchor-list a {
            display: flex;
            align-items: baseline;
            gap: 12px;
            padding: 14px 0;
            border-bottom: 1px solid var(--lp-line);
            color: var(--lp-text);
            font-size: .95rem;
            font-weight: 500;
            transition: padding-left .2s, background .2s;
        }

        .anchor-list a span {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
            font-size: .8rem;
            color: var(--lp-faint);
        }

        .anchor-list a:hover {
            padding-left: 4px;
            color: var(--lp-dark);
            background: rgba(11, 15, 14, .02);
        }

        .move-link {
            display: inline-flex;
            gap: 6px;
            margin-top: 28px;
            color: var(--lp-dark);
            font-size: .92rem;
            font-weight: 600;
            border-bottom: 1px solid rgba(11, 15, 14, .25);
            padding-bottom: 3px;
            transition: gap .2s, border-color .2s;
        }

        .move-link:hover {
            gap: 10px;
            border-color: var(--lp-accent);
        }

        .guide-main {
            min-width: 0;
        }

        .guide-main-title {
            margin-bottom: 16px;
        }

        .step-block {
            padding-bottom: 56px;
            margin-bottom: 56px;
            border-bottom: 1px solid var(--lp-line);
        }

        .step-block:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: 0;
        }

        .step-head {
            display: flex;
            align-items: baseline;
            gap: 18px;
        }

        .step-no {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
            font-size: .9rem;
            font-weight: 600;
            color: var(--lp-dark);
            letter-spacing: .08em;
        }

        .step-head h3 {
            font-size: clamp(1.45rem, 2.4vw, 2rem);
            font-weight: 700;
            letter-spacing: -.02em;
        }

        .step-lead {
            margin-top: 16px;
            color: var(--lp-muted);
            max-width: 78ch;
        }

        .guide-ol {
            counter-reset: stepList;
            margin-top: 26px;
            margin-bottom: 26px;
        }

        .guide-ol li {
            position: relative;
            counter-increment: stepList;
            list-style: none;
            padding: 14px 0 14px 36px;
            border-bottom: 1px solid var(--lp-line);
            color: var(--lp-text);
            line-height: 1.8;
        }

        .guide-ol li::before {
            content: counter(stepList, decimal-leading-zero);
            position: absolute;
            left: 0;
            top: 16px;
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
            font-size: .82rem;
            color: var(--lp-faint);
        }

        .note-line {
            display: flex;
            gap: 14px;
            margin-top: 28px;
            padding: 16px 18px;
            background: rgba(11, 15, 14, .03);
            border-left: 2px solid var(--lp-accent);
            color: var(--lp-text);
            font-size: .95rem;
        }

        .side-figure {
            margin: 26px 0 4px;
            border: 1px solid var(--lp-line);
            background: #eef0e8;
            overflow: hidden;
        }

        .side-figure img {
            width: 100%;
            aspect-ratio: 16 / 9;
            object-fit: cover;
            transition: transform .5s ease-out;
        }

        .side-figure:hover img {
            transform: scale(1.015);
        }

        .side-figure figcaption {
            padding: 12px 14px;
            font-size: .86rem;
            color: var(--lp-muted);
            background: rgba(255, 255, 255, .7);
            border-top: 1px solid var(--lp-line);
            line-height: 1.7;
        }

        .code-list {
            margin-top: 26px;
            border-top: 1px solid var(--lp-line);
        }

        .code-item {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 4px;
            padding: 20px 0;
            border-bottom: 1px solid var(--lp-line);
        }

        .code-item dt {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
            font-size: .95rem;
            font-weight: 600;
            color: var(--lp-dark);
        }

        .code-item dd {
            color: var(--lp-muted);
            line-height: 1.8;
            font-size: .95rem;
        }

        @media (min-width: 640px) {
            .code-item {
                grid-template-columns: minmax(0, 30%) 1fr;
                gap: 28px;
                align-items: baseline;
            }
        }

        @media (min-width: 1024px) {
            .guide-grid {
                grid-template-columns: minmax(0, 300px) minmax(0, 1fr);
                gap: 80px;
            }

            .guide-main {
                max-width: 780px;
            }
        }

        /* ------------------------------------------------------------
        Cross band
        ------------------------------------------------------------ */
        .cross-band {
            background: var(--lp-bg);
            border-bottom: 1px solid var(--lp-line);
        }

        .cross-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 28px;
            align-items: center;
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .cross-band h2 {
            margin-top: 18px;
            max-width: 16ch;
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            letter-spacing: -.02em;
        }

        .cross-band p {
            margin-top: 14px;
            max-width: 52ch;
            color: var(--lp-muted);
        }

        .cross-link {
            justify-self: start;
        }

        @media (min-width: 1024px) {
            .cross-grid {
                grid-template-columns: minmax(0, 1fr) auto;
                padding-top: 44px;
                padding-bottom: 44px;
            }
        }

        /* ------------------------------------------------------------
        FAQ
        ------------------------------------------------------------ */
        .faq-section {
            background: var(--lp-panel);
            padding: 104px 0;
        }

        .faq-wrap {
            max-width: 900px;
            margin-inline: auto;
        }

        .faq-wrap h2 {
            margin-top: 18px;
            margin-bottom: 48px;
            font-size: clamp(1.6rem, 3vw, 2.4rem);
            font-weight: 700;
            letter-spacing: -.02em;
        }

        .faq-item {
            border-bottom: 1px solid var(--lp-line);
        }

        .faq-q {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            width: 100%;
            min-height: 72px;
            padding: 20px 0;
            list-style: none;
            font-size: 1.04rem;
            font-weight: 600;
            color: var(--lp-dark);
            text-align: left;
            transition: color .2s;
        }

        .faq-q:hover {
            color: var(--lp-dark);
        }

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

        .faq-icon {
            position: relative;
            flex: 0 0 18px;
            width: 18px;
            height: 18px;
            transition: transform .25s;
        }

        .faq-icon::before,
        .faq-icon::after {
            content: "";
            position: absolute;
            top: 50%;
            left: 50%;
            background: currentColor;
            transform: translate(-50%, -50%);
        }

        .faq-icon::before {
            width: 18px;
            height: 2px;
        }

        .faq-icon::after {
            width: 2px;
            height: 18px;
        }

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

        .faq-a {
            display: none;
            padding: 2px 40px 24px 0;
            color: var(--lp-muted);
            max-width: 72ch;
            line-height: 1.9;
        }

        .faq-item[open] .faq-a {
            display: block;
            animation: faqIn .25s ease-out;
        }

        @keyframes faqIn {
            from {
                opacity: 0;
                transform: translateY(-4px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ------------------------------------------------------------
        CTA dark
        ------------------------------------------------------------ */
        .cta-dark {
            background: var(--lp-dark);
            color: rgba(255, 255, 255, .88);
            padding: 108px 0;
        }

        .cta-grid {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 64px;
            align-items: center;
        }

        .cta-grid h2 {
            margin-top: 22px;
            max-width: 14ch;
            font-size: clamp(2rem, 3.6vw, 3.2rem);
            line-height: 1.15;
            letter-spacing: -.03em;
            color: var(--lp-white);
        }

        .cta-grid .cta-desc {
            margin-top: 22px;
            max-width: 52ch;
            color: rgba(255, 255, 255, .58);
        }

        .cta-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-top: 34px;
        }

        .cta-steps {
            border-top: 1px solid var(--lp-line-dark);
        }

        .cta-steps>div {
            display: grid;
            grid-template-columns: 54px 1fr;
            gap: 12px;
            align-items: baseline;
            padding: 18px 0;
            border-bottom: 1px solid var(--lp-line-dark);
            color: rgba(255, 255, 255, .78);
        }

        .cta-steps span {
            font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, monospace;
            color: var(--lp-accent);
            font-size: .9rem;
        }

        @media (min-width: 1024px) {
            .cta-grid {
                grid-template-columns: minmax(0, 1.05fr) minmax(0, .9fr);
            }
        }

        /* ------------------------------------------------------------
        Status mini
        ------------------------------------------------------------ */
        .status-mini {
            background: var(--lp-bg);
            border-bottom: 1px solid var(--lp-line);
        }

        .status-mini-inner {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding-top: 40px;
            padding-bottom: 40px;
            color: var(--lp-muted);
        }

        .status-dot {
            flex: 0 0 9px;
            width: 9px;
            height: 9px;
            margin-top: 12px;
            border-radius: 99px;
            background: var(--lp-accent);
        }

        .status-mini a {
            font-weight: 600;
            color: var(--lp-dark);
            border-bottom: 1px solid rgba(11, 15, 14, .25);
            transition: border-color .2s;
        }

        .status-mini a:hover {
            border-color: var(--lp-accent);
        }

        /* ------------------------------------------------------------
        Footer
        ------------------------------------------------------------ */
        .footer {
            background: var(--lp-dark);
            color: rgba(255, 255, 255, .78);
            padding: 76px 0 28px;
        }

        .ft-content {
            display: grid;
            grid-template-columns: minmax(0, 1fr);
            gap: 52px;
            padding-bottom: 40px;
            border-bottom: 1px solid var(--lp-line-dark);
        }

        .footer-brand {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--lp-white);
        }

        .ft-status-dot {
            width: 7px;
            height: 7px;
            border-radius: 99px;
            background: var(--lp-accent);
            box-shadow: 0 0 0 3px rgba(217, 255, 63, .16);
        }

        .ft-desc {
            max-width: 340px;
            margin-top: 18px;
            color: rgba(255, 255, 255, .5);
            font-size: .95rem;
            line-height: 1.8;
        }

        .ft-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .link-group-title {
            font-size: .78rem;
            font-weight: 600;
            letter-spacing: .15em;
            text-transform: uppercase;
            color: rgba(255, 255, 255, .4);
            margin-bottom: 14px;
        }

        .ft-links ul {
            list-style: none;
            display: grid;
            gap: 10px;
        }

        .ft-links a {
            display: inline-flex;
            min-height: 36px;
            align-items: center;
            color: rgba(255, 255, 255, .72);
            font-size: .95rem;
            transition: color .2s;
        }

        .ft-links a:hover {
            color: var(--lp-accent);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 10px 24px;
            padding-top: 24px;
            color: rgba(255, 255, 255, .42);
            font-size: .8rem;
        }

        @media (min-width: 768px) {
            .ft-content {
                grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
                gap: 80px;
            }

            .ft-links {
                justify-content: flex-end;
            }
        }

        /* ------------------------------------------------------------
        Responsive spacing & reduced motion
        ------------------------------------------------------------ */
        @media (max-width: 768px) {
            .pad-block {
                padding: 72px 0;
            }

            .guide-section,
            .faq-section,
            .cta-dark {
                padding-top: 72px;
                padding-bottom: 72px;
            }

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

        @media (prefers-reduced-motion: reduce) {
            html {
                scroll-behavior: auto;
            }

            *,
            *::before,
            *::after {
                animation-duration: .01ms !important;
                animation-iteration-count: 1 !important;
                transition-duration: .01ms !important;
            }

            .hero-media-frame:hover img,
            .side-figure:hover img {
                transform: none;
            }
        }

/* roulang page: category2 */
:root {
        --paper: #F6F7F2;
        --white: #FFFFFF;
        --ink: #0B0F0E;
        --acid: #D9FF3F;
        --orange: #F0A35E;
        --line: rgba(11, 15, 14, .1);
        --line-dark: rgba(255, 255, 255, .14);
        --muted: rgba(11, 15, 14, .62);
        --muted-dark: rgba(255, 255, 255, .68);
        --font-cn: "PingFang SC", "HarmonyOS Sans SC", "MiSans", "Microsoft YaHei", system-ui, sans-serif;
        --font-mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, monospace;
    }

    * {
        box-sizing: border-box;
    }

    html {
        scroll-behavior: smooth;
        scroll-padding-top: 100px;
    }

    body {
        margin: 0;
        background: var(--paper);
        color: var(--ink);
        font-family: var(--font-cn);
        line-height: 1.85;
        -webkit-font-smoothing: antialiased;
        text-rendering: optimizeLegibility;
    }

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

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

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

    figure {
        margin: 0;
    }

    ::selection {
        background: var(--acid);
        color: var(--ink);
    }

    :focus-visible {
        outline: 2px solid var(--acid);
        outline-offset: 3px;
    }

    .container {
        width: 100%;
        max-width: 1200px;
        margin: 0 auto;
        padding-left: 32px;
        padding-right: 32px;
    }

    .section {
        padding-top: 112px;
        padding-bottom: 112px;
    }

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

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

    .section-dark {
        background: var(--ink);
        color: #fff;
    }

    /* ====== 导航 ====== */
    .site-header {
        background: rgba(246, 247, 242, .94);
        border-bottom: 1px solid var(--line);
        position: sticky;
        top: 0;
        z-index: 60;
        transition: background .25s ease, box-shadow .25s ease;
    }

    .site-header.scrolled {
        background: rgba(246, 247, 242, .96);
        box-shadow: 0 12px 32px rgba(11, 15, 14, .05);
    }

    .nav-wrap {
        display: flex;
        align-items: center;
        height: 72px;
        gap: 28px;
    }

    .brand {
        display: inline-flex;
        align-items: center;
        gap: 9px;
        font-weight: 700;
        font-size: 1.38rem;
        letter-spacing: -.01em;
        white-space: nowrap;
        color: var(--ink);
    }

    .brand .dot {
        width: 6px;
        height: 6px;
        border-radius: 999px;
        background: var(--acid);
        box-shadow: 0 0 0 3px rgba(217, 255, 63, .28);
    }

    .nav-links {
        display: flex;
        align-items: center;
        gap: 28px;
        margin-left: auto;
    }

    .nav-links a {
        color: rgba(11, 15, 14, .62);
        font-size: .95rem;
        font-weight: 500;
        padding: 10px 0 8px;
        position: relative;
        display: inline-flex;
        transition: color .2s ease;
    }

    .nav-links a:hover {
        color: var(--ink);
    }

    .nav-links a.active {
        color: var(--ink);
    }

    .nav-links a.active::after {
        content: "";
        position: absolute;
        left: 0;
        bottom: 2px;
        width: 22px;
        height: 2px;
        background: var(--acid);
    }

    .nav-cta {
        font-size: .88rem;
        font-weight: 600;
        border: 1px solid rgba(11, 15, 14, .22);
        border-radius: 2px;
        padding: 9px 16px;
        white-space: nowrap;
        transition: border-color .2s ease, background .2s ease, color .2s ease;
    }

    .nav-cta:hover {
        border-color: var(--ink);
        background: var(--ink);
        color: var(--acid);
    }

    .nav-toggle {
        display: none;
        width: 44px;
        height: 44px;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--line);
        border-radius: 2px;
        font-size: 1.2rem;
        background: transparent;
        cursor: pointer;
        color: var(--ink);
    }

    /* ====== Hero ====== */
    .hero-section {
        background: var(--ink) url("/assets/images/backpic/back-1.png") center/cover no-repeat;
        position: relative;
        color: #fff;
        overflow: hidden;
    }

    .hero-section::before {
        content: "";
        position: absolute;
        inset: 0;
        background: linear-gradient(100deg, rgba(11, 15, 14, .94) 0%, rgba(11, 15, 14, .76) 58%, rgba(11, 15, 14, .58) 100%);
        pointer-events: none;
    }

    .hero-section>* {
        position: relative;
        z-index: 1;
    }

    .hero-inner {
        display: grid;
        grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
        gap: 68px;
        align-items: center;
        padding: 116px 0 96px;
    }

    .hero-kicker {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-family: var(--font-mono);
        font-size: .74rem;
        letter-spacing: .2em;
        text-transform: uppercase;
        color: var(--muted-dark);
    }

    .hero-kicker::before {
        content: "";
        width: 26px;
        height: 1px;
        background: var(--acid);
    }

    .hero-title {
        margin: 22px 0 20px;
        font-size: clamp(2.5rem, 5vw, 4.4rem);
        font-weight: 700;
        line-height: 1.08;
        color: #fff;
        letter-spacing: -.02em;
        max-width: 12em;
    }

    .hero-sub {
        margin: 0 0 34px;
        color: var(--muted-dark);
        font-size: 1.06rem;
        line-height: 1.9;
        max-width: 55ch;
    }

    .hero-actions {
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: 14px;
    }

    .btn {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        min-height: 48px;
        padding: 0 24px;
        border-radius: 2px;
        border: 1px solid transparent;
        font-size: .95rem;
        font-weight: 600;
        cursor: pointer;
        transition: background .2s ease, color .2s ease, border-color .2s ease;
    }

    .btn-acid {
        background: var(--acid);
        color: var(--ink);
        border-color: var(--acid);
    }

    .btn-acid:hover {
        background: transparent;
        color: var(--acid);
    }

    .btn-ghost-light {
        background: transparent;
        color: #fff;
        border-color: rgba(255, 255, 255, .35);
    }

    .btn-ghost-light:hover {
        border-color: var(--acid);
        color: var(--acid);
    }

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

    .btn-ink:hover {
        background: var(--acid);
        color: var(--ink);
        border-color: var(--acid);
    }

    .hero-media {
        max-width: 470px;
        margin-left: auto;
        width: 100%;
    }

    .phone-shell {
        background: #000;
        border: 1px solid rgba(255, 255, 255, .22);
        border-radius: 28px;
        padding: 10px;
        box-shadow: 0 30px 70px rgba(0, 0, 0, .3);
    }

    .phone-screen {
        aspect-ratio: 4 / 5;
        background: #fff;
        border-radius: 18px;
        overflow: hidden;
        position: relative;
    }

    .phone-screen img {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }

    .phone-caption {
        color: rgba(255, 255, 255, .55);
        font-size: .75rem;
        text-align: center;
        padding: 14px 8px 6px;
        letter-spacing: .06em;
    }

    .hero-meta-line {
        border-top: 1px solid var(--line-dark);
        background: rgba(11, 15, 14, .3);
    }

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

    .hero-meta-item {
        padding: 28px 18px 30px;
        border-left: 1px solid var(--line-dark);
    }

    .hero-meta-item:first-child {
        border-left: 0;
        padding-left: 0;
    }

    .meta-index {
        font-family: var(--font-mono);
        font-size: .8rem;
        color: var(--orange);
    }

    .meta-label {
        display: block;
        margin-top: 10px;
        color: rgba(255, 255, 255, .78);
        font-weight: 600;
        font-size: .95rem;
    }

    .meta-copy {
        display: block;
        margin-top: 4px;
        color: rgba(255, 255, 255, .5);
        font-size: .85rem;
        line-height: 1.7;
    }

    /* ====== 板块标题 ====== */
    .section-head {
        max-width: 720px;
        margin-bottom: 52px;
    }

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

    .section-kicker {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        font-family: var(--font-mono);
        font-size: .73rem;
        letter-spacing: .18em;
        text-transform: uppercase;
        color: var(--orange);
        margin-bottom: 16px;
    }

    .section-kicker::before {
        content: "";
        width: 8px;
        height: 8px;
        border-radius: 999px;
        background: var(--orange);
    }

    .section-title {
        margin: 0;
        font-size: clamp(1.7rem, 3vw, 2.6rem);
        line-height: 1.22;
        letter-spacing: -.02em;
        font-weight: 700;
    }

    .section-intro {
        margin: 18px 0 0;
        color: var(--muted);
        font-size: 1rem;
        line-height: 1.85;
    }

    .section-white .section-intro,
    .section-paper .section-intro {
        color: var(--muted);
    }

    .section-dark .section-intro {
        color: var(--muted-dark);
    }

    .env-grid {
        display: grid;
        grid-template-columns: repeat(12, minmax(0, 1fr));
        gap: 1px;
        background: rgba(11, 15, 14, .08);
        border: 1px solid rgba(11, 15, 14, .08);
    }

    .env-cell {
        background: #fff;
        padding: 38px 34px;
        min-height: 260px;
    }

    .env-cell:nth-child(1) {
        grid-column: span 7;
    }

    .env-cell:nth-child(2) {
        grid-column: span 5;
    }

    .env-cell:nth-child(3) {
        grid-column: span 5;
    }

    .env-cell:nth-child(4) {
        grid-column: span 7;
    }

    .env-top {
        display: flex;
        align-items: center;
        gap: 12px;
        margin-bottom: 24px;
    }

    .env-index {
        font-family: var(--font-mono);
        font-size: .86rem;
        color: var(--orange);
    }

    .chip {
        display: inline-flex;
        align-items: center;
        min-height: 24px;
        border-radius: 999px;
        padding: 0 11px;
        font-size: .76rem;
        font-weight: 600;
        letter-spacing: .04em;
        background: var(--paper);
        border: 1px solid rgba(11, 15, 14, .1);
        color: var(--ink);
        white-space: nowrap;
    }

    .env-cell h3 {
        font-size: 1.3rem;
        line-height: 1.35;
        margin: 0 0 12px;
        font-weight: 600;
        letter-spacing: -.01em;
    }

    .env-cell p {
        font-size: .95rem;
        line-height: 1.85;
        color: rgba(11, 15, 14, .68);
        margin: 0;
    }

    /* ====== 适配检查流程 ====== */
    .guide-grid {
        display: grid;
        grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr);
        gap: 64px;
        align-items: start;
    }

    .guide-lead p {
        margin: 22px 0 28px;
        color: var(--muted);
        font-size: .98rem;
    }

    .shot-frame {
        border: 1px solid rgba(11, 15, 14, .1);
        background: var(--paper);
        margin-top: 26px;
    }

    .shot-frame img {
        width: 100%;
        aspect-ratio: 4 / 3;
        object-fit: cover;
    }

    .shot-caption {
        padding: 12px 14px;
        font-size: .76rem;
        color: rgba(11, 15, 14, .52);
        border-top: 1px solid rgba(11, 15, 14, .08);
        letter-spacing: .02em;
    }

    .step-list {
        margin-top: 0;
    }

    .step-item {
        display: grid;
        grid-template-columns: 76px minmax(0, 1fr);
        gap: 22px;
        padding: 28px 0 30px;
        border-bottom: 1px solid rgba(11, 15, 14, .1);
    }

    .step-item:first-child {
        border-top: 1px solid rgba(11, 15, 14, .1);
    }

    .step-num {
        font-family: var(--font-mono);
        font-size: 1.15rem;
        font-weight: 700;
        color: var(--ink);
        padding-top: 4px;
    }

    .step-num em {
        color: var(--orange);
        font-style: normal;
    }

    .step-body h3 {
        margin: 0 0 10px;
        font-size: 1.18rem;
        font-weight: 600;
        line-height: 1.4;
    }

    .step-body p {
        margin: 0;
        color: rgba(11, 15, 14, .64);
        font-size: .95rem;
        line-height: 1.85;
    }

    /* ====== 状态说明条 ====== */
    .status-slim {
        background: var(--white);
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
        padding-top: 30px;
        padding-bottom: 30px;
    }

    .status-slim .status-inner {
        display: flex;
        align-items: center;
        gap: 16px;
        justify-content: center;
        flex-wrap: wrap;
        color: var(--muted);
        font-size: .92rem;
    }

    .dot-green {
        width: 8px;
        height: 8px;
        border-radius: 999px;
        background: var(--acid);
        box-shadow: 0 0 0 4px rgba(217, 255, 63, .22);
    }

    .status-slim strong {
        color: var(--ink);
        font-weight: 600;
    }

    .status-slim .green-txt {
        color: #394924;
        font-weight: 500;
        border-left: 1px solid rgba(11, 15, 14, .1);
        padding-left: 16px;
    }

    /* ====== FAQ ====== */
    .faq-section {
        background: var(--paper);
    }

    .faq-list {
        max-width: 880px;
    }

    .faq-item {
        border-bottom: 1px solid rgba(11, 15, 14, .1);
    }

    .faq-item summary {
        display: flex;
        align-items: center;
        justify-content: space-between;
        gap: 24px;
        cursor: pointer;
        min-height: 66px;
        padding: 18px 0;
        list-style: none;
        font-size: 1rem;
        font-weight: 600;
        color: var(--ink);
        transition: color .2s ease;
    }

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

    .faq-item summary:hover {
        color: #283011;
    }

    .faq-item summary::after {
        content: "+";
        display: inline-flex;
        align-items: center;
        justify-content: center;
        flex: 0 0 30px;
        width: 30px;
        height: 30px;
        border-radius: 999px;
        border: 1px solid rgba(11, 15, 14, .18);
        font-size: 1.2rem;
        font-weight: 400;
        transition: transform .25s ease, border-color .2s ease;
    }

    .faq-item[open] summary::after {
        transform: rotate(45deg);
        border-color: var(--ink);
        background: var(--ink);
        color: var(--acid);
    }

    .faq-answer {
        padding: 0 48px 26px 0;
        color: rgba(11, 15, 14, .66);
        line-height: 1.9;
        font-size: .95rem;
    }

    .faq-answer p {
        margin: 0;
    }

    /* ====== CTA ====== */
    .cta-band {
        background: var(--ink);
        color: #fff;
        position: relative;
        overflow: hidden;
    }

    .cta-band::before {
        content: "";
        position: absolute;
        right: -18vw;
        top: -50%;
        width: 50vw;
        height: 140%;
        background: radial-gradient(circle, rgba(217, 255, 63, .08) 0%, transparent 70%);
        pointer-events: none;
    }

    .cta-grid {
        display: grid;
        grid-template-columns: minmax(0, 1.35fr) minmax(0, .65fr);
        gap: 56px;
        align-items: center;
        padding: 100px 0 104px;
    }

    .cta-title {
        margin: 0;
        font-size: clamp(1.8rem, 3vw, 2.8rem);
        line-height: 1.2;
        font-weight: 700;
        letter-spacing: -.02em;
    }

    .cta-copy {
        margin: 20px 0 30px;
        color: var(--muted-dark);
        max-width: 52ch;
        font-size: .98rem;
        line-height: 1.9;
    }

    .cta-actions {
        display: flex;
        flex-wrap: wrap;
        gap: 14px;
    }

    .cta-aside {
        border-left: 1px solid rgba(255, 255, 255, .18);
        padding: 26px 0 26px 32px;
    }

    .cta-aside .kicker-text {
        color: var(--orange);
        font-family: var(--font-mono);
        font-size: .76rem;
        letter-spacing: .16em;
        text-transform: uppercase;
    }

    .cta-aside p {
        margin: 12px 0 22px;
        color: rgba(255, 255, 255, .62);
        font-size: .92rem;
        line-height: 1.75;
    }

    /* ====== Footer ====== */
    .footer {
        background: var(--ink);
        color: rgba(255, 255, 255, .7);
    }

    .ft-content {
        display: grid;
        grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
        gap: 60px;
        padding: 76px 0 56px;
    }

    .footer-brand {
        display: inline-flex;
        align-items: center;
        gap: 10px;
        color: #fff;
        font-size: 1.3rem;
        font-weight: 700;
        letter-spacing: -.01em;
    }

    .ft-status-dot {
        width: 7px;
        height: 7px;
        border-radius: 999px;
        background: var(--acid);
        box-shadow: 0 0 0 4px rgba(217, 255, 63, .18);
    }

    .ft-desc {
        max-width: 380px;
        margin: 18px 0 0;
        color: rgba(255, 255, 255, .48);
        font-size: .88rem;
        line-height: 1.75;
    }

    .ft-links {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 32px;
    }

    .link-group-title {
        color: rgba(255, 255, 255, .86);
        font-size: .9rem;
        font-weight: 600;
        margin-bottom: 14px;
    }

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

    .ft-links a {
        color: rgba(255, 255, 255, .52);
        font-size: .88rem;
        transition: color .2s ease;
    }

    .ft-links a:hover {
        color: var(--acid);
    }

    .footer-bottom {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 16px;
        padding: 20px 0 24px;
        border-top: 1px solid rgba(255, 255, 255, .12);
        color: rgba(255, 255, 255, .36);
        font-size: .78rem;
        flex-wrap: wrap;
    }

    /* ====== 响应式布局 ====== */
    @media (max-width: 1024px) {
        .section {
            padding-top: 88px;
            padding-bottom: 88px;
        }

        .hero-inner {
            grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
            gap: 36px;
        }

        .hero-media {
            max-width: 400px;
        }

        .env-cell:nth-child(1),
        .env-cell:nth-child(2),
        .env-cell:nth-child(3),
        .env-cell:nth-child(4) {
            grid-column: span 6;
        }

        .guide-grid {
            grid-template-columns: 1fr;
            gap: 42px;
        }

        .shot-frame img {
            max-height: 420px;
        }

        .cta-grid {
            grid-template-columns: 1fr;
            gap: 40px;
        }

        .cta-aside {
            border-left: 0;
            border-top: 1px solid rgba(255, 255, 255, .16);
            padding: 24px 0 0;
        }
    }

    @media (max-width: 768px) {
        .container {
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding-top: 64px;
            padding-bottom: 64px;
        }

        .nav-wrap {
            height: 60px;
        }

        .nav-links {
            display: none;
            flex-direction: column;
            align-items: stretch;
            gap: 2px;
            background: rgba(246, 247, 242, .98);
            position: absolute;
            top: 60px;
            left: 0;
            right: 0;
            padding: 18px 24px 24px;
            border-bottom: 1px solid rgba(11, 15, 14, .1);
        }

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

        .nav-links a {
            min-height: 46px;
            align-items: center;
            padding: 0;
            font-size: .98rem;
        }

        .nav-links a.active::after {
            bottom: 0;
        }

        .nav-cta {
            display: none;
        }

        .nav-toggle {
            display: inline-flex;
            margin-left: auto;
        }

        .hero-inner {
            grid-template-columns: 1fr;
            padding: 68px 0 72px;
            gap: 46px;
        }

        .hero-media {
            max-width: 360px;
            margin: 0 auto;
        }

        .hero-meta {
            display: grid;
            grid-template-columns: 1fr;
        }

        .hero-meta-item {
            border-left: 0;
            border-top: 1px solid var(--line-dark);
            padding: 22px 0;
        }

        .hero-meta-item:first-child {
            border-top: 0;
            padding-top: 10px;
        }

        .env-cell,
        .env-cell:nth-child(n) {
            grid-column: span 12;
        }

        .env-cell {
            padding: 30px 24px;
            min-height: 0;
        }

        .step-item {
            grid-template-columns: 54px minmax(0, 1fr);
            gap: 14px;
            padding: 24px 0;
        }

        .ft-content {
            grid-template-columns: 1fr;
            gap: 48px;
            padding-top: 60px;
            padding-bottom: 44px;
        }

        .cta-grid {
            padding: 56px 0 60px;
        }

        .status-slim .status-inner {
            justify-content: flex-start;
            align-items: flex-start;
            flex-direction: column;
            gap: 10px;
        }

        .status-slim .green-txt {
            border-left: 0;
            padding-left: 0;
        }

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

    @media (max-width: 520px) {
        .hero-actions {
            align-items: stretch;
            width: 100%;
        }

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

        .faq-answer {
            padding-right: 0;
        }

        .cta-actions {
            flex-direction: column;
            width: 100%;
        }

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

        .ft-links {
            grid-template-columns: 1fr;
            gap: 24px;
        }
    }

    @media (prefers-reduced-motion: reduce) {
        html {
            scroll-behavior: auto;
        }

        *,
        *::before,
        *::after {
            transition: none !important;
            animation: none !important;
        }
    }