/* roulang page: index */
:root {
            --bg: #07111f;
            --bg-soft: #0d1b2d;
            --panel: rgba(18, 37, 59, .78);
            --panel-solid: #10243a;
            --line: rgba(143, 190, 226, .18);
            --text: #eef7ff;
            --muted: #9bb2c8;
            --blue: #42b9ff;
            --cyan: #62f0db;
            --gold: #f1c978;
            --danger: #ff8f8f;
            --radius: 18px;
            --shadow: 0 18px 55px rgba(0, 0, 0, .28);
        }

        * { box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            margin: 0;
            color: var(--text);
            background: var(--bg);
            font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
            line-height: 1.75;
            letter-spacing: 0;
        }
        a { color: inherit; text-decoration: none; transition: .25s ease; }
        a:hover { color: var(--cyan); }
        img { max-width: 100%; display: block; }
        button, input { font: inherit; }
        button:focus, a:focus, input:focus { outline: 3px solid rgba(98, 240, 219, .35); outline-offset: 3px; }
        .container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
        .section { padding: 92px 0; position: relative; }
        .section-alt { background: #091827; border-top: 1px solid rgba(143, 190, 226, .08); border-bottom: 1px solid rgba(143, 190, 226, .08); }
        .section-head { max-width: 700px; margin-bottom: 42px; }
        .eyebrow {
            color: var(--cyan);
            font-size: 12px;
            font-weight: 700;
            letter-spacing: .18em;
            text-transform: uppercase;
            margin-bottom: 12px;
        }
        h1, h2, h3 { margin: 0; line-height: 1.25; letter-spacing: 0; }
        h1 { font-size: clamp(34px, 5vw, 62px); max-width: 720px; }
        h2 { font-size: clamp(26px, 3vw, 40px); }
        h3 { font-size: 19px; }
        .section-head p, .hero-copy p { color: var(--muted); margin: 18px 0 0; font-size: 16px; }
        .site-header {
            position: sticky;
            top: 0;
            z-index: 20;
            background: rgba(7, 17, 31, .86);
            backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--line);
        }
        .topbar { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
        .brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; font-size: 17px; }
        .brand-mark {
            width: 38px; height: 38px; border-radius: 12px;
            display: grid; place-items: center;
            color: var(--bg); background: linear-gradient(135deg, var(--cyan), var(--blue));
            box-shadow: 0 0 24px rgba(66, 185, 255, .3);
            font-weight: 900;
        }
        .header-actions { display: flex; align-items: center; gap: 12px; }
        .menu-trigger, .button {
            border: 1px solid var(--line);
            border-radius: 10px;
            color: var(--text);
            background: rgba(255,255,255,.04);
            padding: 11px 17px;
            cursor: pointer;
            transition: .25s ease;
        }
        .menu-trigger:hover, .button:hover { transform: translateY(-2px); border-color: rgba(98,240,219,.6); }
        .button-primary {
            color: #061522;
            border: 0;
            background: linear-gradient(100deg, var(--cyan), var(--blue));
            box-shadow: 0 8px 25px rgba(66,185,255,.22);
            font-weight: 800;
        }
        .drawer {
            position: fixed; inset: 0; z-index: 30; visibility: hidden; opacity: 0;
            background: rgba(2, 8, 15, .72); transition: .25s ease;
        }
        .drawer.open { visibility: visible; opacity: 1; }
        .drawer-panel {
            width: min(420px, 88vw); height: 100%; padding: 30px;
            background: #0b1b2d; border-right: 1px solid var(--line);
            transform: translateX(-100%); transition: .3s ease;
        }
        .drawer.open .drawer-panel { transform: translateX(0); }
        .drawer-close { float: right; background: transparent; border: 0; color: var(--muted); font-size: 26px; cursor: pointer; }
        .drawer h2 { clear: both; padding-top: 45px; font-size: 28px; }
        .drawer-nav { margin-top: 28px; display: grid; gap: 8px; }
        .drawer-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
        .drawer-nav a.active, .drawer-nav a:hover { color: var(--cyan); }
        .hero {
            min-height: 680px;
            display: flex;
            align-items: center;
            background:
                linear-gradient(90deg, rgba(7,17,31,.98) 0%, rgba(7,17,31,.86) 48%, rgba(7,17,31,.45) 100%),
                url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1800&q=85") center/cover;
            border-bottom: 1px solid var(--line);
        }
        .hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; align-items: center; gap: 70px; }
        .hero-copy { padding: 55px 0; }
        .hero-copy p { max-width: 690px; font-size: 17px; }
        .hero-actions { display: flex; flex-wrap: wrap; gap: 13px; margin-top: 30px; }
        .hero-note { margin-top: 18px; color: var(--muted); font-size: 13px; }
        .entry-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
        .entry-card, .glass-card, .case-card, .quote, .resource-card {
            background: var(--panel);
            border: 1px solid var(--line);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            backdrop-filter: blur(14px);
        }
        .entry-card { min-height: 150px; padding: 24px; display: flex; flex-direction: column; justify-content: space-between; }
        .entry-card:hover, .case-card:hover, .resource-card:hover { transform: translateY(-5px); border-color: rgba(98,240,219,.5); }
        .entry-card strong { font-size: 19px; }
        .entry-card span { color: var(--muted); font-size: 13px; }
        .icon-box { width: 35px; height: 35px; display: grid; place-items: center; border-radius: 10px; background: rgba(98,240,219,.12); color: var(--cyan); margin-bottom: 16px; }
        .case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .case-card { overflow: hidden; transition: .25s ease; }
        .case-cover { height: 170px; position: relative; overflow: hidden; }
        .case-cover img { width: 100%; height: 100%; object-fit: cover; transition: .5s ease; }
        .case-card:hover img { transform: scale(1.06); }
        .case-cover:after { content: ""; position: absolute; inset: 0; background: linear-gradient(transparent 40%, rgba(4,12,22,.75)); }
        .badge { display: inline-flex; padding: 5px 10px; border-radius: 20px; font-size: 12px; color: var(--cyan); background: rgba(98,240,219,.1); border: 1px solid rgba(98,240,219,.22); }
        .case-info { padding: 20px; }
        .case-info p, .resource-card p, .quote p { color: var(--muted); font-size: 14px; margin: 10px 0 0; }
        .metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; border: 1px solid var(--line); background: var(--line); border-radius: var(--radius); overflow: hidden; }
        .metric { background: var(--panel-solid); padding: 28px 22px; }
        .metric strong { display: block; color: var(--cyan); font-size: 34px; line-height: 1; margin-bottom: 10px; }
        .metric span { color: var(--muted); font-size: 13px; }
        .compare { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
        .compare-box { padding: 30px; border-radius: var(--radius); border: 1px solid var(--line); }
        .compare-box.old { background: rgba(255,143,143,.05); }
        .compare-box.new { background: rgba(98,240,219,.08); border-color: rgba(98,240,219,.32); }
        .compare-box h3 { margin-bottom: 18px; }
        .compare-box ul, .method-list { list-style: none; padding: 0; margin: 0; }
        .compare-box li, .method-list li { padding: 12px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
        .compare-box li:last-child, .method-list li:last-child { border-bottom: 0; }
        .compare-box li:before { content: "•"; color: var(--cyan); margin-right: 10px; }
        .method-grid { display: grid; grid-template-columns: .8fr 1.2fr; gap: 30px; align-items: stretch; }
        .glass-card { padding: 30px; }
        .method-list { counter-reset: method; }
        .method-list li { counter-increment: method; display: flex; gap: 15px; }
        .method-list li:before { content: counter(method, decimal-leading-zero); color: var(--gold); font-weight: 800; }
        .resource-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .resource-card { padding: 24px; transition: .25s ease; }
        .resource-card .date { color: var(--cyan); font-size: 12px; margin-bottom: 18px; }
        .quote-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
        .quote { padding: 24px; }
        .quote strong { display: block; margin-top: 18px; color: var(--gold); font-size: 14px; }
        .notice { display: flex; justify-content: space-between; align-items: center; gap: 25px; padding: 24px 28px; border: 1px solid rgba(241,201,120,.3); border-radius: var(--radius); background: rgba(241,201,120,.07); }
        .notice p { margin: 0; color: var(--muted); font-size: 14px; }
        .faq { display: grid; grid-template-columns: repeat(2, 1fr); gap: 15px; }
        .faq details { border-bottom: 1px solid var(--line); padding: 17px 0; }
        .faq summary { cursor: pointer; font-weight: 700; }
        .faq p { color: var(--muted); font-size: 14px; margin: 12px 0 0; }
        .final-cta { background: linear-gradient(115deg, #0d2a42, #0a1b2b); border-top: 1px solid rgba(98,240,219,.2); border-bottom: 1px solid rgba(98,240,219,.2); }
        .cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; }
        .cta-inner p { color: var(--muted); max-width: 620px; margin: 12px 0 0; }
        footer { padding: 48px 0 26px; background: #050d17; }
        .footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr; gap: 35px; }
        footer p, footer a { color: var(--muted); font-size: 14px; }
        .footer-links { display: grid; gap: 8px; }
        .copyright { padding-top: 28px; margin-top: 30px; border-top: 1px solid var(--line); color: #6f879c; font-size: 12px; }
        @media (max-width: 1024px) {
            .hero-grid { gap: 35px; }
            .metrics { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .container { width: min(100% - 30px, 620px); }
            .section { padding: 65px 0; }
            .hero { min-height: auto; }
            .hero-grid, .method-grid, .compare { grid-template-columns: 1fr; }
            .hero-copy { padding: 75px 0 35px; }
            .entry-grid { margin-bottom: 70px; }
            .case-grid, .resource-grid, .quote-grid { grid-template-columns: 1fr 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
            .cta-inner { align-items: flex-start; flex-direction: column; }
        }
        @media (max-width: 520px) {
            .topbar { min-height: 68px; }
            .brand { font-size: 14px; }
            .brand-mark { width: 33px; height: 33px; }
            .header-actions .button { display: none; }
            h1 { font-size: 35px; }
            .entry-grid, .case-grid, .resource-grid, .quote-grid, .faq, .footer-grid { grid-template-columns: 1fr; }
            .metrics { grid-template-columns: 1fr 1fr; }
            .metric strong { font-size: 27px; }
            .notice { align-items: flex-start; flex-direction: column; }
            .hero-actions .button { width: 100%; text-align: center; }
        }

/* roulang page: category1 */
:root {
      --bg: #07111f;
      --bg-soft: #0d1b2d;
      --panel: rgba(18, 37, 59, .78);
      --panel-solid: #10243a;
      --line: rgba(143, 190, 226, .18);
      --text: #eef7ff;
      --muted: #9bb2c8;
      --blue: #42b9ff;
      --cyan: #62f0db;
      --gold: #f1c978;
      --danger: #ff8f8f;
      --radius: 18px;
      --shadow: 0 18px 55px rgba(0, 0, 0, .28);
    }
    * { box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      margin: 0;
      color: var(--text);
      background: var(--bg);
      font-family: "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
      line-height: 1.75;
      letter-spacing: 0;
    }
    a { color: inherit; text-decoration: none; transition: .25s ease; }
    a:hover { color: var(--cyan); }
    img { max-width: 100%; display: block; }
    button, input { font: inherit; }
    button:focus, a:focus, input:focus { outline: 3px solid rgba(98, 240, 219, .35); outline-offset: 3px; }
    h1, h2, h3, p { margin-top: 0; }
    h1, h2, h3 { line-height: 1.25; }
    .container { width: min(1160px, calc(100% - 40px)); margin: 0 auto; }
    .section { padding: 76px 0; position: relative; }
    .section-alt { background: #091827; border-top: 1px solid rgba(143, 190, 226, .08); border-bottom: 1px solid rgba(143, 190, 226, .08); }
    .section-head { max-width: 720px; margin-bottom: 34px; }
    .section-head p { color: var(--muted); margin: 14px 0 0; font-size: 15px; }
    .eyebrow { color: var(--cyan); font-size: 12px; font-weight: 700; margin-bottom: 12px; }
    .site-header { position: sticky; top: 0; z-index: 20; background: rgba(7, 17, 31, .9); backdrop-filter: blur(18px); border-bottom: 1px solid var(--line); }
    .topbar { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
    .brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; font-size: 17px; }
    .brand-mark { width: 38px; height: 38px; border-radius: 12px; display: grid; place-items: center; color: var(--bg); background: linear-gradient(135deg, var(--cyan), var(--blue)); box-shadow: 0 0 24px rgba(66, 185, 255, .3); font-weight: 900; flex: 0 0 auto; }
    .header-actions { display: flex; align-items: center; gap: 12px; }
    .menu-trigger, .button { display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--line); border-radius: 10px; color: var(--text); background: rgba(255,255,255,.04); padding: 10px 16px; cursor: pointer; transition: .25s ease; }
    .menu-trigger:hover, .button:hover { transform: translateY(-2px); border-color: rgba(98,240,219,.6); color: var(--text); }
    .button-primary { color: #061522; border: 0; background: linear-gradient(100deg, var(--cyan), var(--blue)); box-shadow: 0 8px 25px rgba(66,185,255,.22); font-weight: 800; }
    .button-primary:hover { color: #061522; box-shadow: 0 10px 32px rgba(66,185,255,.35); }
    .drawer { position: fixed; inset: 0; z-index: 30; visibility: hidden; opacity: 0; background: rgba(2, 8, 15, .76); transition: .25s ease; }
    .drawer.open { visibility: visible; opacity: 1; }
    .drawer-panel { width: min(420px, 88vw); height: 100%; padding: 30px; background: #0b1b2d; border-right: 1px solid var(--line); transform: translateX(-100%); transition: .3s ease; }
    .drawer.open .drawer-panel { transform: translateX(0); }
    .drawer-close { float: right; background: transparent; border: 0; color: var(--muted); font-size: 26px; cursor: pointer; }
    .drawer h2 { clear: both; padding-top: 45px; font-size: 25px; }
    .drawer-nav { margin-top: 28px; display: grid; gap: 8px; }
    .drawer-nav a { padding: 14px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
    .drawer-nav a.active, .drawer-nav a:hover { color: var(--cyan); }
    .hero { padding: 58px 0 48px; background: linear-gradient(120deg, #0a1c2d, #10263a 62%, #102f3a); border-bottom: 1px solid var(--line); }
    .crumb { color: var(--muted); font-size: 13px; margin-bottom: 28px; }
    .crumb a { color: var(--cyan); }
    .hero-grid { display: grid; grid-template-columns: 1fr .8fr; align-items: center; gap: 48px; }
    .hero h1 { max-width: 700px; font-size: clamp(34px, 4vw, 54px); margin-bottom: 18px; }
    .hero-copy p { max-width: 690px; color: var(--muted); font-size: 16px; margin-bottom: 24px; }
    .hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }
    .hero-visual { min-height: 280px; border-radius: var(--radius); border: 1px solid rgba(98,240,219,.22); overflow: hidden; position: relative; background: linear-gradient(145deg, rgba(10,31,48,.24), rgba(7,17,31,.9)), url("https://images.unsplash.com/photo-1516321318423-f06f85e504b3?auto=format&fit=crop&w=1000&q=80") center/cover; box-shadow: var(--shadow); }
    .visual-note { position: absolute; left: 22px; right: 22px; bottom: 20px; padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: rgba(7,17,31,.78); backdrop-filter: blur(12px); }
    .visual-note strong { display: block; font-size: 18px; }
    .visual-note span { color: var(--muted); font-size: 13px; }
    .badge { display: inline-flex; padding: 5px 10px; border-radius: 20px; font-size: 12px; color: var(--cyan); background: rgba(98,240,219,.1); border: 1px solid rgba(98,240,219,.22); }
    .topic-layout { display: grid; grid-template-columns: 1.1fr .9fr; gap: 28px; align-items: stretch; }
    .feature-panel, .glass-card, .topic-card, .update-item, .trust-panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); backdrop-filter: blur(14px); }
    .feature-panel { min-height: 330px; padding: 32px; display: flex; flex-direction: column; justify-content: space-between; background: linear-gradient(130deg, rgba(66,185,255,.12), rgba(18,37,59,.82) 55%), var(--panel-solid); }
    .feature-panel h2 { font-size: 27px; max-width: 520px; }
    .feature-panel p { color: var(--muted); max-width: 560px; }
    .feature-meta { display: flex; flex-wrap: wrap; gap: 9px; }
    .topic-stack { display: grid; gap: 14px; }
    .topic-card { padding: 20px 22px; transition: .25s ease; }
    .topic-card:hover { transform: translateY(-3px); border-color: rgba(98,240,219,.45); }
    .topic-card h3 { font-size: 18px; margin: 10px 0 7px; }
    .topic-card p { color: var(--muted); font-size: 14px; margin: 0; }
    .two-col { display: grid; grid-template-columns: .85fr 1.15fr; gap: 32px; align-items: start; }
    .glass-card { padding: 28px; }
    .detail-list { list-style: none; margin: 0; padding: 0; }
    .detail-list li { display: flex; gap: 14px; padding: 15px 0; border-bottom: 1px solid var(--line); color: var(--muted); }
    .detail-list li:last-child { border-bottom: 0; }
    .list-index { color: var(--cyan); font-weight: 800; min-width: 30px; }
    .stats-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
    .stat { padding: 21px; border-left: 2px solid var(--cyan); background: rgba(255,255,255,.035); }
    .stat strong { display: block; font-size: 23px; color: var(--text); }
    .stat span { color: var(--muted); font-size: 13px; }
    .updates { display: grid; gap: 12px; }
    .update-item { display: grid; grid-template-columns: 120px 1fr auto; gap: 20px; align-items: center; padding: 18px 22px; transition: .2s ease; }
    .update-item:hover { border-color: rgba(98,240,219,.42); background: rgba(18,37,59,.95); }
    .update-date { color: var(--gold); font-size: 13px; }
    .update-item strong { font-size: 16px; }
    .update-item p { color: var(--muted); font-size: 13px; margin: 4px 0 0; }
    .update-arrow { color: var(--cyan); font-size: 21px; }
    .trust-panel { padding: 30px; display: grid; grid-template-columns: 1fr 1fr; gap: 25px; align-items: center; }
    .trust-panel p { color: var(--muted); margin: 10px 0 0; }
    .notice { border-left: 3px solid var(--gold); padding: 14px 16px; background: rgba(241,201,120,.07); color: #d8cba9; font-size: 13px; }
    .cta-band { padding: 44px 0; background: #0d2032; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
    .cta-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
    .cta-inner p { color: var(--muted); margin: 8px 0 0; }
    footer { padding: 54px 0 22px; background: #050d17; border-top: 1px solid var(--line); }
    .footer-grid { display: grid; grid-template-columns: 1.3fr .8fr .8fr; gap: 35px; padding-bottom: 34px; }
    footer p { max-width: 390px; margin: 16px 0 0; color: var(--muted); font-size: 14px; }
    footer h3 { font-size: 15px; margin-bottom: 14px; }
    .footer-links { display: grid; gap: 9px; color: var(--muted); font-size: 14px; }
    .footer-links a:hover { color: var(--cyan); }
    .copyright { border-top: 1px solid var(--line); padding-top: 19px; color: #72869b; font-size: 12px; }
    @media (max-width: 1024px) {
      .hero-grid { gap: 30px; }
      .topic-layout, .two-col { grid-template-columns: 1fr 1fr; }
      .section { padding: 64px 0; }
    }
    @media (max-width: 768px) {
      .hero-grid, .topic-layout, .two-col { grid-template-columns: 1fr; }
      .hero { padding-top: 36px; }
      .hero-visual { min-height: 240px; }
      .trust-panel { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .footer-grid > div:first-child { grid-column: 1 / -1; }
      .cta-inner { align-items: flex-start; flex-direction: column; }
    }
    @media (max-width: 520px) {
      .container { width: min(100% - 28px, 1160px); }
      .topbar { min-height: 68px; }
      .brand { font-size: 14px; gap: 8px; }
      .brand-mark { width: 34px; height: 34px; }
      .header-actions .button { display: none; }
      .menu-trigger { padding: 9px 12px; }
      .section { padding: 52px 0; }
      .hero h1 { font-size: 34px; }
      .hero-copy p { font-size: 15px; }
      .feature-panel { min-height: 300px; padding: 23px; }
      .stats-row { grid-template-columns: 1fr; }
      .update-item { grid-template-columns: 1fr auto; gap: 5px 12px; padding: 16px; }
      .update-date { grid-column: 1 / -1; }
      .update-item p { max-width: 100%; }
      .footer-grid { grid-template-columns: 1fr; }
      .footer-grid > div:first-child { grid-column: auto; }
    }
    @media (prefers-reduced-motion: reduce) {
      *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; }
    }