/* roulang page: index */
:root{
      --bg:#f7f1e8;
      --bg-soft:#f2e7db;
      --panel:#fffaf4;
      --panel-strong:#f8efe4;
      --text:#241917;
      --muted:#6f5e54;
      --line:#e6d7c8;
      --brand:#6d3f33;
      --brand-2:#9a6652;
      --accent:#c89a74;
      --accent-soft:#ead1be;
      --warn:#9b7445;
      --shadow:0 12px 32px rgba(51, 29, 24, .08);
      --shadow-strong:0 18px 44px rgba(51, 29, 24, .12);
      --radius-xl:32px;
      --radius-lg:24px;
      --radius-md:16px;
      --radius-sm:12px;
      --radius-pill:999px;
      --header-h:74px;
      --container:1240px;
      --max-hero:1320px;
      --gap:24px;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--text);
      background:
        radial-gradient(circle at top left, rgba(201,154,116,.18), transparent 26%),
        radial-gradient(circle at top right, rgba(109,63,51,.10), transparent 24%),
        linear-gradient(180deg, #f8f2eb 0%, #f4ede4 100%);
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", "Hiragino Sans GB", "Helvetica Neue", Arial, sans-serif;
      line-height:1.7;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
      overflow-x:hidden;
    }
    ::selection{background:rgba(109,63,51,.18); color:var(--text)}
    a{color:inherit; text-decoration:none; transition:color .2s ease, background-color .2s ease, border-color .2s ease, transform .2s ease, opacity .2s ease}
    img{max-width:100%; height:auto}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    .skip-link{
      position:absolute; left:-9999px; top:8px; z-index:9999;
      background:var(--brand); color:#fffaf4; padding:10px 14px; border-radius:999px;
    }
    .skip-link:focus{left:12px}
    :focus-visible{outline:3px solid rgba(201,154,116,.45); outline-offset:3px}

    .site-header{
      position:sticky; top:0; z-index:200;
      background:rgba(247,241,232,.72);
      backdrop-filter:saturate(120%) blur(16px);
      border-bottom:1px solid rgba(230,215,200,.78);
      transition:background .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .site-header.is-scrolled{
      background:rgba(252,248,242,.94);
      box-shadow:0 10px 26px rgba(51,29,24,.06);
      border-bottom-color:rgba(230,215,200,.95);
    }
    .header-inner{
      min-height:var(--header-h);
      display:flex;
      align-items:center;
      gap:18px;
      max-width:var(--container);
      margin:0 auto;
      padding:0 18px;
    }
    .logo{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:800;
      letter-spacing:.02em;
      color:var(--text);
    }
    .logo-mark{
      width:38px; height:38px;
      border-radius:14px;
      display:grid; place-items:center;
      color:#fffaf4;
      background:linear-gradient(145deg, var(--brand), #8b5848);
      box-shadow:0 10px 18px rgba(109,63,51,.18);
      font-size:18px;
      line-height:1;
    }
    .logo-text{
      font-size:18px;
      line-height:1.1;
    }
    .logo-sub{
      display:block;
      font-size:12px;
      letter-spacing:.18em;
      color:var(--muted);
      font-weight:600;
      margin-top:2px;
    }

    .nav-wrap{
      flex:1;
      display:flex;
      align-items:center;
      justify-content:center;
      min-width:0;
    }
    .nav-links{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      margin:0;
      list-style:none;
      border:1px solid rgba(230,215,200,.95);
      background:rgba(255,250,244,.72);
      border-radius:999px;
      box-shadow:0 6px 20px rgba(51,29,24,.04);
      overflow:auto;
      scrollbar-width:none;
    }
    .nav-links::-webkit-scrollbar{display:none}
    .nav-links a{
      display:inline-flex;
      align-items:center;
      gap:8px;
      height:42px;
      padding:0 18px;
      border-radius:999px;
      color:var(--text);
      font-size:14px;
      font-weight:600;
      white-space:nowrap;
    }
    .nav-links a:hover{
      background:rgba(201,154,116,.13);
      color:var(--brand);
    }
    .nav-links a.active{
      background:var(--brand);
      color:#fffaf4;
      box-shadow:0 8px 18px rgba(109,63,51,.18);
    }
    .nav-links a.active:hover{background:var(--brand)}
    .header-actions{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
    }
    .age-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:10px 14px;
      border-radius:999px;
      border:1px solid rgba(201,154,116,.48);
      background:rgba(255,250,244,.84);
      color:var(--warn);
      font-size:13px;
      font-weight:700;
      white-space:nowrap;
    }
    .age-dot{
      width:9px; height:9px; border-radius:50%;
      background:var(--warn);
      box-shadow:0 0 0 4px rgba(155,116,69,.12);
    }

    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:44px;
      padding:0 18px;
      border-radius:999px;
      background:var(--brand);
      color:#fffaf4;
      border:1px solid transparent;
      box-shadow:0 12px 20px rgba(109,63,51,.14);
      font-weight:700;
      font-size:14px;
    }
    .nav-cta:hover{transform:translateY(-1px); background:#7a4739}
    .nav-cta:active{transform:translateY(0)}
    .nav-cta.secondary{
      background:transparent;
      border-color:rgba(109,63,51,.2);
      color:var(--brand);
      box-shadow:none;
    }
    .nav-cta.secondary:hover{background:rgba(109,63,51,.06)}

    .nav-toggle{
      display:none;
      width:46px; height:46px;
      border-radius:14px;
      border:1px solid rgba(230,215,200,.95);
      background:rgba(255,250,244,.9);
      padding:0;
      align-items:center;
      justify-content:center;
      gap:4px;
      flex-direction:column;
    }
    .nav-toggle span{
      display:block;
      width:18px;
      height:2px;
      border-radius:2px;
      background:var(--brand);
      transition:transform .2s ease, opacity .2s ease;
    }
    .nav-toggle.is-open span:nth-child(1){transform:translateY(6px) rotate(45deg)}
    .nav-toggle.is-open span:nth-child(2){opacity:0}
    .nav-toggle.is-open span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

    .mobile-drawer{
      position:fixed;
      inset:var(--header-h) 0 auto 0;
      z-index:190;
      display:none;
      padding:14px 14px 18px;
      background:rgba(248,242,235,.98);
      border-bottom:1px solid rgba(230,215,200,.95);
      box-shadow:0 24px 42px rgba(51,29,24,.12);
    }
    .mobile-drawer.open{display:block}
    .drawer-panel{
      max-width:var(--container);
      margin:0 auto;
      border:1px solid rgba(230,215,200,.95);
      background:linear-gradient(180deg, rgba(255,250,244,.98), rgba(248,239,228,.96));
      border-radius:24px;
      padding:18px;
    }
    .drawer-main{
      display:grid;
      gap:10px;
      margin-bottom:16px;
    }
    .drawer-main a{
      display:flex;
      justify-content:space-between;
      align-items:center;
      padding:14px 16px;
      border-radius:16px;
      background:rgba(255,255,255,.62);
      border:1px solid rgba(230,215,200,.95);
      font-weight:700;
    }
    .drawer-main a.active{
      background:rgba(109,63,51,.09);
      border-color:rgba(109,63,51,.22);
      color:var(--brand);
    }
    .drawer-util{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      border-top:1px dashed rgba(230,215,200,.95);
      padding-top:14px;
    }
    .drawer-util a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:0 14px;
      border-radius:999px;
      border:1px solid rgba(201,154,116,.4);
      background:#fffaf4;
      color:var(--brand);
      font-size:13px;
      font-weight:700;
    }

    .page-shell{
      position:relative;
    }
    .section{
      padding:112px 0;
      position:relative;
    }
    .section.tight{padding:88px 0}
    .section-title{
      display:flex;
      flex-direction:column;
      gap:12px;
      margin-bottom:28px;
    }
    .section-title .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-weight:800;
      font-size:13px;
      letter-spacing:.12em;
      text-transform:uppercase;
    }
    .section-title h2{
      margin:0;
      font-size:clamp(28px, 3vw, 42px);
      line-height:1.12;
      letter-spacing:-.03em;
    }
    .section-title p{
      margin:0;
      max-width:760px;
      color:var(--muted);
      font-size:16px;
    }

    .hero{
      padding:38px 0 94px;
    }
    .hero-wrap{
      position:relative;
      max-width:var(--max-hero);
      margin:0 auto;
      padding:0 18px;
    }
    .hero-panel{
      position:relative;
      overflow:hidden;
      border:1px solid rgba(230,215,200,.98);
      border-radius:34px;
      background:
        linear-gradient(180deg, rgba(255,250,244,.96), rgba(248,239,228,.92)),
        radial-gradient(circle at right top, rgba(201,154,116,.22), transparent 28%),
        radial-gradient(circle at left bottom, rgba(109,63,51,.08), transparent 32%);
      box-shadow:var(--shadow);
      padding:28px;
    }
    .hero-panel::before,
    .hero-panel::after{
      content:"";
      position:absolute;
      border-radius:50%;
      pointer-events:none;
      filter:blur(2px);
    }
    .hero-panel::before{
      width:360px; height:360px;
      right:-110px; top:-120px;
      background:radial-gradient(circle, rgba(201,154,116,.17), rgba(201,154,116,0) 68%);
    }
    .hero-panel::after{
      width:300px; height:300px;
      left:-120px; bottom:-120px;
      background:radial-gradient(circle, rgba(109,63,51,.11), rgba(109,63,51,0) 70%);
    }
    .hero-copy{
      position:relative;
      z-index:2;
    }
    .hero-brand{
      display:inline-flex;
      align-items:center;
      gap:10px;
      margin-bottom:16px;
      padding:9px 14px;
      border-radius:999px;
      border:1px solid rgba(201,154,116,.42);
      background:rgba(255,250,244,.82);
      color:var(--brand);
      font-size:13px;
      font-weight:800;
      letter-spacing:.14em;
      text-transform:uppercase;
    }
    .brand-dot{
      width:8px; height:8px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 0 4px rgba(109,63,51,.12);
    }
    .hero h1{
      margin:0;
      max-width:10.5ch;
      font-size:clamp(36px, 5.3vw, 68px);
      line-height:1.06;
      letter-spacing:-.05em;
    }
    .hero h1 .accent{
      color:var(--brand);
    }
    .hero-lead{
      max-width:760px;
      margin:22px 0 0;
      color:var(--muted);
      font-size:clamp(16px, 1.6vw, 18px);
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:28px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:48px;
      padding:0 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-size:15px;
      font-weight:800;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, opacity .2s ease;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{
      background:var(--brand);
      color:#fffaf4;
      box-shadow:0 14px 24px rgba(109,63,51,.16);
    }
    .btn-primary:hover{background:#7b4739}
    .btn-secondary{
      background:rgba(255,255,255,.76);
      border-color:rgba(109,63,51,.18);
      color:var(--brand);
    }
    .btn-secondary:hover{
      background:rgba(109,63,51,.06);
      border-color:rgba(109,63,51,.28);
    }
    .hero-chips{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:22px;
    }
    .chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      border:1px solid rgba(230,215,200,.95);
      background:rgba(255,250,244,.8);
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .chip strong{color:var(--brand)}
    .hero-aside{
      position:relative;
      z-index:2;
      height:100%;
    }
    .hero-card{
      height:100%;
      border-radius:28px;
      border:1px solid rgba(230,215,200,.98);
      background:linear-gradient(180deg, rgba(255,250,244,.96), rgba(248,239,228,.95));
      padding:22px;
      box-shadow:var(--shadow);
    }
    .hero-preview{
      display:grid;
      gap:14px;
    }
    .preview-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
    }
    .preview-title{
      font-size:18px;
      font-weight:800;
      letter-spacing:-.02em;
      margin:0;
    }
    .preview-tag{
      display:inline-flex;
      align-items:center;
      padding:7px 12px;
      border-radius:999px;
      background:rgba(155,116,69,.12);
      color:var(--warn);
      font-size:12px;
      font-weight:800;
    }
    .preview-stack{
      display:grid;
      gap:12px;
    }
    .preview-line{
      display:flex;
      align-items:center;
      gap:12px;
      padding:14px 16px;
      border-radius:18px;
      background:rgba(255,255,255,.76);
      border:1px solid rgba(230,215,200,.95);
    }
    .preview-flag{
      width:40px; height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:rgba(109,63,51,.10);
      color:var(--brand);
      font-weight:900;
      flex:0 0 auto;
    }
    .preview-line h3{
      margin:0;
      font-size:15px;
      line-height:1.25;
    }
    .preview-line p{
      margin:2px 0 0;
      font-size:13px;
      color:var(--muted);
    }
    .preview-footer{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:auto;
      padding-top:6px;
    }
    .mini-stat{
      flex:1 1 120px;
      min-width:120px;
      padding:14px;
      border-radius:18px;
      background:rgba(109,63,51,.06);
      border:1px solid rgba(109,63,51,.12);
    }
    .mini-stat strong{
      display:block;
      color:var(--brand);
      font-size:20px;
      line-height:1.1;
    }
    .mini-stat span{
      color:var(--muted);
      font-size:12px;
      font-weight:700;
    }

    .age-strip{
      margin-top:18px;
      border:1px solid rgba(201,154,116,.36);
      background:linear-gradient(180deg, rgba(255,250,244,.9), rgba(248,239,228,.88));
      border-radius:24px;
      box-shadow:var(--shadow);
      padding:16px 18px;
    }
    .age-strip-inner{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .age-strip-text{
      display:flex;
      flex-direction:column;
      gap:4px;
    }
    .age-strip-text strong{
      font-size:15px;
      color:var(--brand);
      letter-spacing:.02em;
    }
    .age-strip-text span{
      color:var(--muted);
      font-size:14px;
    }
    .age-strip-actions{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }

    .soft-band{
      border-top:1px solid rgba(230,215,200,.9);
      border-bottom:1px solid rgba(230,215,200,.9);
      background:rgba(255,250,244,.55);
    }

    .section-alt{
      background:linear-gradient(180deg, rgba(248,239,228,.45), rgba(255,250,244,.8));
    }

    .intro-layout{
      display:grid;
      grid-template-columns:minmax(0, 1.15fr) minmax(0, .85fr);
      gap:26px;
      align-items:start;
    }
    .intro-copy{
      position:sticky;
      top:108px;
    }
    .intro-copy .lead{
      margin:0 0 20px;
      max-width:660px;
      color:var(--muted);
      font-size:16px;
    }
    .timeline{
      display:grid;
      gap:14px;
      padding-left:18px;
      border-left:2px solid rgba(201,154,116,.28);
    }
    .timeline-item{
      position:relative;
      padding:16px 16px 16px 20px;
      border-radius:18px;
      background:rgba(255,250,244,.82);
      border:1px solid rgba(230,215,200,.98);
      box-shadow:0 8px 20px rgba(51,29,24,.04);
    }
    .timeline-item::before{
      content:"";
      position:absolute;
      left:-29px;
      top:22px;
      width:12px;
      height:12px;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 0 6px rgba(109,63,51,.10);
    }
    .timeline-item .kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      color:var(--brand);
      font-size:12px;
      font-weight:800;
      letter-spacing:.14em;
      text-transform:uppercase;
      margin-bottom:8px;
    }
    .timeline-item h3{
      margin:0 0 6px;
      font-size:18px;
      line-height:1.25;
    }
    .timeline-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }

    .feature-grid{
      display:grid;
      gap:16px;
    }
    .feature-card{
      padding:20px;
      border-radius:24px;
      border:1px solid rgba(230,215,200,.98);
      background:linear-gradient(180deg, rgba(255,250,244,.96), rgba(248,239,228,.92));
      box-shadow:0 8px 24px rgba(51,29,24,.05);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .feature-card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-strong);
      border-color:rgba(201,154,116,.48);
    }
    .feature-head{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:10px;
    }
    .feature-num{
      width:38px;
      height:38px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:rgba(109,63,51,.10);
      color:var(--brand);
      font-size:13px;
      font-weight:900;
      flex:0 0 auto;
    }
    .feature-tag{
      display:inline-flex;
      align-items:center;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(201,154,116,.14);
      color:var(--warn);
      font-size:12px;
      font-weight:800;
      white-space:nowrap;
    }
    .feature-card h3{
      margin:0 0 6px;
      font-size:17px;
      line-height:1.28;
    }
    .feature-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }

    .topic-grid{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:18px;
    }
    .topic-card{
      position:relative;
      overflow:hidden;
      padding:24px;
      border-radius:28px;
      border:1px solid rgba(230,215,200,.98);
      background:
        linear-gradient(180deg, rgba(255,250,244,.98), rgba(248,239,228,.92));
      box-shadow:var(--shadow);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .topic-card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow-strong);
      border-color:rgba(201,154,116,.5);
    }
    .topic-card::after{
      content:"";
      position:absolute;
      right:-24px;
      top:-24px;
      width:140px;
      height:140px;
      border-radius:50%;
      background:radial-gradient(circle, rgba(201,154,116,.18), rgba(201,154,116,0) 68%);
    }
    .topic-meta{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      margin-bottom:16px;
    }
    .topic-title{
      margin:0 0 12px;
      font-size:24px;
      line-height:1.18;
      letter-spacing:-.03em;
    }
    .topic-desc{
      margin:0 0 18px;
      color:var(--muted);
      font-size:15px;
      max-width:46ch;
    }
    .topic-list{
      display:grid;
      gap:10px;
      margin:0 0 18px;
      padding:0;
      list-style:none;
    }
    .topic-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--text);
      font-size:14px;
    }
    .topic-list li::before{
      content:"";
      width:8px;
      height:8px;
      margin-top:.55em;
      border-radius:50%;
      background:var(--brand);
      box-shadow:0 0 0 4px rgba(109,63,51,.08);
      flex:0 0 auto;
    }
    .topic-foot{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      flex-wrap:wrap;
    }

    .demo-layout{
      display:grid;
      grid-template-columns:minmax(0, .92fr) minmax(0, 1.08fr);
      gap:26px;
      align-items:center;
    }
    .step-list{
      display:grid;
      gap:14px;
      margin:0;
      padding:0;
      list-style:none;
    }
    .step-item{
      display:flex;
      gap:14px;
      padding:16px;
      border-radius:20px;
      border:1px solid rgba(230,215,200,.98);
      background:rgba(255,250,244,.88);
      box-shadow:0 8px 20px rgba(51,29,24,.04);
    }
    .step-index{
      width:40px;
      height:40px;
      border-radius:14px;
      display:grid;
      place-items:center;
      background:rgba(109,63,51,.10);
      color:var(--brand);
      font-weight:900;
      flex:0 0 auto;
    }
    .step-item h3{
      margin:0 0 4px;
      font-size:17px;
      line-height:1.25;
    }
    .step-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }

    .mock-browser{
      border-radius:28px;
      border:1px solid rgba(230,215,200,.98);
      background:linear-gradient(180deg, rgba(255,250,244,.98), rgba(247,241,232,.95));
      box-shadow:var(--shadow);
      overflow:hidden;
    }
    .mock-topbar{
      display:flex;
      align-items:center;
      gap:8px;
      padding:14px 16px;
      border-bottom:1px solid rgba(230,215,200,.95);
      background:rgba(248,239,228,.92);
    }
    .mock-dot{width:10px; height:10px; border-radius:50%}
    .mock-dot.red{background:#d76e5b}
    .mock-dot.yellow{background:#d5a24c}
    .mock-dot.green{background:#72a06c}
    .mock-url{
      margin-left:8px;
      flex:1;
      height:30px;
      border-radius:999px;
      background:#fffaf4;
      border:1px solid rgba(230,215,200,.95);
    }
    .mock-content{
      padding:18px;
      display:grid;
      gap:14px;
    }
    .mock-shelf{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
    }
    .filter-chip{
      display:inline-flex;
      align-items:center;
      padding:7px 12px;
      border-radius:999px;
      border:1px solid rgba(230,215,200,.95);
      background:#fffaf4;
      font-size:12px;
      font-weight:800;
      color:var(--muted);
    }
    .filter-chip.active{
      background:rgba(109,63,51,.1);
      border-color:rgba(109,63,51,.22);
      color:var(--brand);
    }
    .mock-card{
      display:grid;
      grid-template-columns:84px minmax(0,1fr);
      gap:14px;
      align-items:center;
      padding:14px;
      border-radius:20px;
      border:1px solid rgba(230,215,200,.95);
      background:rgba(255,250,244,.9);
    }
    .mock-thumb{
      height:84px;
      border-radius:16px;
      background:
        linear-gradient(145deg, rgba(109,63,51,.10), rgba(201,154,116,.22)),
        repeating-linear-gradient(45deg, rgba(255,255,255,.24) 0 10px, rgba(255,255,255,0) 10px 20px);
      border:1px solid rgba(201,154,116,.28);
    }
    .mock-card h3{
      margin:0 0 6px;
      font-size:16px;
      line-height:1.22;
    }
    .mock-card p{
      margin:0;
      color:var(--muted);
      font-size:13px;
    }
    .mock-meta{
      display:flex;
      gap:10px;
      flex-wrap:wrap;
      margin-top:8px;
    }

    .evidence-grid{
      display:grid;
      grid-template-columns:repeat(4, minmax(0, 1fr));
      gap:16px;
      margin-bottom:22px;
    }
    .metric{
      padding:18px;
      border-radius:22px;
      background:rgba(255,250,244,.92);
      border:1px solid rgba(230,215,200,.98);
      box-shadow:0 8px 20px rgba(51,29,24,.04);
    }
    .metric strong{
      display:block;
      font-size:30px;
      line-height:1;
      color:var(--brand);
      letter-spacing:-.04em;
      margin-bottom:8px;
    }
    .metric span{
      color:var(--muted);
      font-size:13px;
      font-weight:700;
    }
    .evidence-grid .metric:nth-child(2) strong{color:#7f503f}
    .evidence-grid .metric:nth-child(3) strong{color:#8b6a45}
    .evidence-grid .metric:nth-child(4) strong{color:#9a6652}

    .proof-layout{
      display:grid;
      grid-template-columns:minmax(0, .96fr) minmax(0, 1.04fr);
      gap:22px;
    }
    .proof-card{
      padding:22px;
      border-radius:26px;
      border:1px solid rgba(230,215,200,.98);
      background:linear-gradient(180deg, rgba(255,250,244,.96), rgba(248,239,228,.92));
      box-shadow:var(--shadow);
    }
    .proof-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:12px;
    }
    .proof-list li{
      display:flex;
      gap:12px;
      align-items:flex-start;
      padding:14px 16px;
      border-radius:18px;
      background:rgba(255,255,255,.7);
      border:1px solid rgba(230,215,200,.95);
    }
    .proof-bullet{
      width:18px; height:18px;
      border-radius:50%;
      margin-top:.15em;
      background:var(--brand);
      box-shadow:0 0 0 5px rgba(109,63,51,.1);
      flex:0 0 auto;
    }
    .proof-list h3{
      margin:0 0 4px;
      font-size:16px;
      line-height:1.25;
    }
    .proof-list p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .rule-bars{
      display:grid;
      gap:14px;
    }
    .rule-bar{
      padding:18px;
      border-radius:20px;
      background:rgba(255,250,244,.88);
      border:1px solid rgba(230,215,200,.98);
    }
    .rule-bar-head{
      display:flex;
      justify-content:space-between;
      gap:12px;
      align-items:center;
      margin-bottom:10px;
      font-weight:800;
    }
    .bar{
      height:10px;
      border-radius:999px;
      background:rgba(201,154,116,.16);
      overflow:hidden;
    }
    .bar > span{
      display:block;
      height:100%;
      border-radius:999px;
      background:linear-gradient(90deg, var(--brand), var(--accent));
    }
    .rule-bar small{
      display:block;
      margin-top:10px;
      color:var(--muted);
      font-size:13px;
    }

    .plans-grid{
      display:grid;
      grid-template-columns:repeat(3, minmax(0, 1fr));
      gap:18px;
    }
    .plan{
      position:relative;
      padding:24px;
      border-radius:28px;
      border:1px solid rgba(230,215,200,.98);
      background:
        linear-gradient(180deg, rgba(255,250,244,.98), rgba(248,239,228,.94));
      box-shadow:var(--shadow);
      transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
    }
    .plan:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-strong);
      border-color:rgba(201,154,116,.5);
    }
    .plan.featured{
      border-color:rgba(109,63,51,.28);
      background:
        linear-gradient(180deg, rgba(255,250,244,.98), rgba(243,232,219,.98));
    }
    .plan .badge{
      display:inline-flex;
      align-items:center;
      padding:7px 11px;
      border-radius:999px;
      background:rgba(109,63,51,.1);
      color:var(--brand);
      font-size:12px;
      font-weight:800;
      margin-bottom:14px;
    }
    .plan h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.2;
    }
    .plan p{
      margin:0 0 16px;
      color:var(--muted);
      font-size:14px;
    }
    .plan ul{
      margin:0 0 18px;
      padding:0;
      list-style:none;
      display:grid;
      gap:10px;
    }
    .plan li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:var(--text);
      font-size:14px;
    }
    .plan li::before{
      content:"✓";
      color:var(--brand);
      font-weight:900;
      flex:0 0 auto;
    }
    .plan .btn{
      width:100%;
    }

    .accordion{
      border:none;
      background:transparent;
      margin:0;
    }
    .accordion-item{
      margin-bottom:12px;
      border:1px solid rgba(230,215,200,.98);
      border-radius:22px;
      overflow:hidden;
      background:rgba(255,250,244,.92);
      box-shadow:0 8px 20px rgba(51,29,24,.04);
    }
    .accordion-title{
      position:relative;
      padding:18px 20px;
      color:var(--text);
      font-weight:800;
      font-size:16px;
      line-height:1.35;
      border:none;
      background:transparent;
    }
    .accordion-title::before{
      right:20px;
      color:var(--brand);
      font-size:26px;
      margin-top:-14px;
    }
    .accordion-content{
      border:none;
      padding:0 20px 18px 20px;
      color:var(--muted);
      font-size:14px;
      line-height:1.8;
    }
    .accordion-content p{margin:0}
    .accordion-item.is-active > .accordion-title{
      background:rgba(109,63,51,.06);
      color:var(--brand);
    }

    .cta-band{
      background:linear-gradient(145deg, #37221c 0%, #553127 100%);
      color:#fffaf4;
    }
    .cta-panel{
      border-radius:32px;
      background:
        radial-gradient(circle at right top, rgba(201,154,116,.22), transparent 24%),
        radial-gradient(circle at left bottom, rgba(255,250,244,.08), transparent 28%),
        linear-gradient(145deg, rgba(55,34,28,.98), rgba(85,49,39,.98));
      padding:28px;
      box-shadow:0 22px 50px rgba(40,22,18,.26);
      border:1px solid rgba(255,255,255,.08);
    }
    .cta-panel h2{
      margin:0 0 10px;
      font-size:clamp(28px, 4vw, 42px);
      line-height:1.1;
      letter-spacing:-.04em;
      color:#fffaf4;
    }
    .cta-panel p{
      margin:0;
      max-width:760px;
      color:rgba(255,250,244,.82);
      font-size:16px;
    }
    .cta-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:20px;
    }
    .btn-light{
      background:#fffaf4;
      color:var(--brand);
      border-color:transparent;
    }
    .btn-light:hover{background:#fff2e6}
    .btn-dark{
      background:transparent;
      color:#fffaf4;
      border-color:rgba(255,250,244,.22);
    }
    .btn-dark:hover{background:rgba(255,250,244,.08)}

    .faq-layout{
      display:grid;
      grid-template-columns:minmax(0, .92fr) minmax(0, 1.08fr);
      gap:24px;
      align-items:start;
    }
    .faq-note{
      position:sticky;
      top:108px;
      padding:22px;
      border-radius:26px;
      background:rgba(255,250,244,.92);
      border:1px solid rgba(230,215,200,.98);
      box-shadow:var(--shadow);
    }
    .faq-note h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.18;
    }
    .faq-note p{
      margin:0 0 14px;
      color:var(--muted);
      font-size:14px;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-tile{
      padding:16px 18px;
      border-radius:18px;
      background:rgba(109,63,51,.05);
      border:1px solid rgba(109,63,51,.10);
      color:var(--text);
      font-size:14px;
      font-weight:700;
    }

    .footer{
      background:linear-gradient(180deg, #30211c 0%, #241917 100%);
      color:rgba(255,250,244,.86);
      padding:38px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:minmax(0, .9fr) minmax(0, .75fr) minmax(0, 1fr);
      gap:24px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fffaf4;
      margin-bottom:12px;
      font-weight:800;
      font-size:18px;
    }
    .footer-brand .logo-mark{box-shadow:none}
    .footer-note{
      color:rgba(255,250,244,.72);
      font-size:14px;
      max-width:42ch;
      margin:0 0 16px;
    }
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:rgba(255,250,244,.88);
      padding:2px 0;
    }
    .footer-links a:hover{color:var(--accent)}
    .footer-title{
      font-size:13px;
      letter-spacing:.14em;
      text-transform:uppercase;
      color:rgba(255,250,244,.58);
      margin:0 0 12px;
      font-weight:800;
    }
    .legal-box{
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.05);
      border:1px solid rgba(255,255,255,.08);
    }
    .legal-box p{
      margin:0;
      color:rgba(255,250,244,.78);
      font-size:14px;
      line-height:1.8;
    }
    .copyright{
      margin-top:22px;
      padding-top:18px;
      border-top:1px solid rgba(255,255,255,.08);
      color:rgba(255,250,244,.62);
      font-size:13px;
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      justify-content:space-between;
    }

    .feedback-form{
      display:grid;
      gap:12px;
      margin-top:14px;
    }
    .field-row{
      display:grid;
      grid-template-columns:repeat(2, minmax(0, 1fr));
      gap:10px;
    }
    .field{
      display:grid;
      gap:6px;
    }
    .field label{
      font-size:13px;
      color:rgba(255,250,244,.82);
      font-weight:700;
    }
    .field input,
    .field select,
    .field textarea{
      width:100%;
      border-radius:14px;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,250,244,.08);
      color:#fffaf4;
      padding:12px 14px;
      min-height:46px;
      outline:none;
      transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }
    .field textarea{
      min-height:110px;
      resize:vertical;
    }
    .field input::placeholder,
    .field textarea::placeholder{color:rgba(255,250,244,.5)}
    .field input:focus,
    .field select:focus,
    .field textarea:focus{
      border-color:rgba(201,154,116,.68);
      box-shadow:0 0 0 4px rgba(201,154,116,.16);
      background:rgba(255,250,244,.12);
    }
    .form-note{
      color:rgba(255,250,244,.6);
      font-size:12px;
      line-height:1.6;
    }
    .form-status{
      display:none;
      margin-top:10px;
      padding:12px 14px;
      border-radius:14px;
      background:rgba(201,154,116,.14);
      color:#fffaf4;
      border:1px solid rgba(201,154,116,.26);
      font-size:13px;
      font-weight:700;
    }
    .form-status.show{display:block}

    .floating-cta{
      position:fixed;
      right:18px;
      bottom:18px;
      z-index:180;
      width:min(320px, calc(100vw - 36px));
      border-radius:26px;
      border:1px solid rgba(230,215,200,.98);
      background:rgba(255,250,244,.95);
      box-shadow:0 18px 40px rgba(51,29,24,.14);
      overflow:hidden;
      transition:transform .2s ease, opacity .2s ease, visibility .2s ease;
    }
    .floating-cta.is-muted{
      opacity:.45;
      transform:translateY(8px);
    }
    .floating-head{
      display:flex;
      justify-content:space-between;
      align-items:center;
      gap:12px;
      padding:14px 16px 0;
    }
    .floating-head strong{
      color:var(--brand);
      font-size:14px;
      letter-spacing:.06em;
    }
    .floating-close{
      width:32px; height:32px;
      border-radius:10px;
      border:1px solid rgba(230,215,200,.95);
      background:#fffaf4;
      color:var(--muted);
      font-size:18px;
      line-height:1;
      padding:0;
    }
    .floating-body{
      padding:10px 16px 16px;
      display:grid;
      gap:12px;
    }
    .floating-mini{
      display:flex;
      flex-wrap:wrap;
      gap:8px;
    }
    .floating-mini .chip{
      padding:7px 10px;
      font-size:12px;
    }
    .floating-actions{
      display:grid;
      gap:10px;
    }
    .floating-actions .btn{
      width:100%;
      min-height:46px;
    }
    .floating-foot{
      padding:0 16px 16px;
      color:var(--muted);
      font-size:12px;
      line-height:1.6;
    }

    .section-anchor{
      position:relative;
      top:-88px;
    }

    @media (max-width: 63.9375em){
      .nav-wrap{display:none}
      .nav-toggle{display:inline-flex}
      .header-actions .age-pill{display:none}
      .hero{padding-top:28px}
      .hero-panel{padding:22px}
      .hero h1{max-width:100%}
      .intro-layout,
      .demo-layout,
      .proof-layout,
      .faq-layout,
      .footer-grid{
        grid-template-columns:1fr;
      }
      .intro-copy,
      .faq-note{
        position:relative;
        top:auto;
      }
      .evidence-grid,
      .plans-grid{
        grid-template-columns:repeat(2, minmax(0, 1fr));
      }
      .topic-grid{
        grid-template-columns:1fr;
      }
      .footer-grid{
        gap:18px;
      }
    }
    @media (max-width: 39.9375em){
      .header-inner{padding:0 14px}
      .logo-text{font-size:16px}
      .logo-sub{letter-spacing:.1em}
      .nav-cta{display:none}
      .hero{padding:18px 0 70px}
      .hero-panel{padding:18px; border-radius:28px}
      .hero h1{font-size:clamp(34px, 10vw, 42px)}
      .hero-actions .btn,
      .age-strip-actions .btn,
      .cta-actions .btn{
        width:100%;
      }
      .age-strip-inner,
      .topic-foot{
        align-items:flex-start;
      }
      .evidence-grid,
      .plans-grid,
      .field-row{
        grid-template-columns:1fr;
      }
      .section{
        padding:78px 0;
      }
      .section.tight{padding:64px 0}
      .mock-card{
        grid-template-columns:1fr;
      }
      .mock-thumb{height:120px}
      .floating-cta{
        left:12px;
        right:12px;
        bottom:12px;
        width:auto;
      }
      .copyright{
        flex-direction:column;
      }
    }

    @media (prefers-reduced-motion: reduce){
      html{scroll-behavior:auto}
      *, *::before, *::after{
        animation-duration:.01ms !important;
        animation-iteration-count:1 !important;
        transition-duration:.01ms !important;
        scroll-behavior:auto !important;
      }
    }

/* roulang page: category1 */
:root{
      --color-bg:#f7f0e8;
      --color-bg-soft:#fbf7f1;
      --color-panel:#fffaf3;
      --color-panel-2:#f1e2da;
      --color-text:#241b19;
      --color-muted:#746964;
      --color-faint:#9a8b82;
      --color-primary:#6f2f3b;
      --color-primary-dark:#51232d;
      --color-accent:#b77a55;
      --color-accent-soft:#ead2c3;
      --color-warning:#8a6532;
      --color-warning-bg:#f4e7cd;
      --color-border:#e3d5cc;
      --color-line:#d8c7bd;
      --color-dark:#211817;
      --color-dark-2:#2e2422;
      --shadow-soft:0 18px 50px rgba(72,45,36,.10);
      --shadow-card:0 12px 32px rgba(55,34,28,.08);
      --radius-lg:32px;
      --radius-md:22px;
      --radius-sm:14px;
      --radius-pill:999px;
      --container:1200px;
      --nav-h:72px;
      --transition:180ms ease;
    }

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

    html{
      scroll-behavior:smooth;
      overflow-x:hidden;
    }

    body{
      margin:0;
      color:var(--color-text);
      background:
        radial-gradient(circle at 15% 5%, rgba(183,122,85,.18), transparent 30%),
        radial-gradient(circle at 85% 12%, rgba(111,47,59,.12), transparent 32%),
        linear-gradient(180deg,var(--color-bg) 0%,#fbf4ee 38%,#f4ebe3 100%);
      font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",Arial,sans-serif;
      line-height:1.72;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
      min-width:320px;
    }

    body.menu-open{
      overflow:hidden;
    }

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

    a{
      color:inherit;
      text-decoration:none;
      transition:color var(--transition), background-color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    }

    a:hover,
    a:focus{
      color:var(--color-primary);
      outline:none;
    }

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

    button{
      cursor:pointer;
    }

    ::selection{
      background:var(--color-primary);
      color:#fffaf3;
    }

    .grid-container{
      max-width:var(--container);
      padding-left:24px;
      padding-right:24px;
    }

    .section{
      padding:96px 0;
      position:relative;
    }

    .section-tight{
      padding:70px 0;
    }

    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 13px;
      border-radius:var(--radius-pill);
      background:rgba(111,47,59,.08);
      color:var(--color-primary-dark);
      border:1px solid rgba(111,47,59,.13);
      font-size:13px;
      font-weight:700;
      letter-spacing:.02em;
    }

    .eyebrow::before{
      content:"";
      width:7px;
      height:7px;
      border-radius:50%;
      background:var(--color-accent);
      box-shadow:0 0 0 5px rgba(183,122,85,.16);
    }

    h1,h2,h3,h4,p{
      margin-top:0;
    }

    h1,h2,h3{
      letter-spacing:-.035em;
      color:var(--color-text);
      font-weight:850;
    }

    h1{
      font-size:clamp(36px,5vw,62px);
      line-height:1.08;
      margin:20px 0 20px;
      max-width:980px;
      word-break:keep-all;
      overflow-wrap:anywhere;
    }

    h2{
      font-size:clamp(28px,3vw,42px);
      line-height:1.18;
      margin-bottom:16px;
    }

    h3{
      font-size:clamp(20px,2vw,26px);
      line-height:1.25;
      margin-bottom:10px;
    }

    p{
      color:var(--color-muted);
      font-size:16px;
    }

    .lead{
      font-size:18px;
      max-width:760px;
      color:#5f514d;
      line-height:1.85;
    }

    .site-header{
      position:sticky;
      top:0;
      z-index:1000;
      height:var(--nav-h);
      display:flex;
      align-items:center;
      background:rgba(251,247,241,.84);
      backdrop-filter:blur(18px);
      -webkit-backdrop-filter:blur(18px);
      border-bottom:1px solid rgba(216,199,189,.75);
      transition:box-shadow 220ms ease, background-color 220ms ease, border-color 220ms ease;
    }

    .site-header.is-scrolled{
      background:rgba(255,250,243,.96);
      box-shadow:0 12px 30px rgba(54,34,28,.08);
      border-color:rgba(211,190,178,.92);
    }

    .nav-wrap{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:20px;
    }

    .brand{
      display:inline-flex;
      align-items:center;
      gap:11px;
      min-width:max-content;
      font-weight:850;
      color:var(--color-text);
      letter-spacing:-.03em;
    }

    .logo-mark{
      width:40px;
      height:40px;
      border-radius:15px;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:#fff7ec;
      background:
        linear-gradient(145deg,var(--color-primary),var(--color-primary-dark));
      box-shadow:0 10px 24px rgba(111,47,59,.22);
      font-size:17px;
      font-weight:900;
      letter-spacing:-.04em;
    }

    .brand span:last-child{
      font-size:18px;
      white-space:nowrap;
    }

    .site-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      flex:1;
    }

    .nav-links{
      list-style:none;
      display:flex;
      align-items:center;
      gap:6px;
      margin:0;
      padding:7px;
      border:1px solid rgba(216,199,189,.78);
      border-radius:var(--radius-pill);
      background:rgba(255,250,243,.68);
    }

    .nav-links a{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:0 15px;
      border-radius:var(--radius-pill);
      color:#4a3c38;
      font-size:14px;
      font-weight:700;
      white-space:nowrap;
    }

    .nav-links a:hover{
      color:var(--color-primary);
      background:rgba(111,47,59,.07);
    }

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

    .nav-links a.active::before{
      content:"";
      width:6px;
      height:6px;
      border-radius:50%;
      margin-right:7px;
      background:var(--color-primary);
    }

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

    .age-pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      min-height:36px;
      padding:0 12px;
      border-radius:var(--radius-pill);
      background:var(--color-warning-bg);
      color:#684922;
      border:1px solid rgba(138,101,50,.24);
      font-size:13px;
      font-weight:800;
      white-space:nowrap;
    }

    .age-pill::before{
      content:"18+";
      display:inline-flex;
      align-items:center;
      justify-content:center;
      height:22px;
      min-width:32px;
      padding:0 7px;
      border-radius:var(--radius-pill);
      background:#fff6e2;
      color:#6e4b1d;
      font-size:12px;
      font-weight:900;
    }

    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:46px;
      padding:0 20px;
      border-radius:var(--radius-pill);
      border:1px solid transparent;
      font-size:15px;
      font-weight:800;
      line-height:1;
      text-align:center;
      transition:transform var(--transition), box-shadow var(--transition), background-color var(--transition), color var(--transition), border-color var(--transition);
      user-select:none;
    }

    .btn:hover{
      transform:translateY(-2px);
    }

    .btn:active{
      transform:translateY(0);
    }

    .btn:focus-visible{
      outline:3px solid rgba(183,122,85,.35);
      outline-offset:3px;
    }

    .btn-primary{
      color:#fff8ef;
      background:var(--color-primary);
      border-color:var(--color-primary);
      box-shadow:0 14px 28px rgba(111,47,59,.20);
    }

    .btn-primary:hover,
    .btn-primary:focus{
      color:#fff8ef;
      background:var(--color-primary-dark);
      border-color:var(--color-primary-dark);
      box-shadow:0 18px 36px rgba(111,47,59,.26);
    }

    .btn-secondary{
      color:var(--color-primary-dark);
      background:rgba(255,250,243,.78);
      border-color:var(--color-line);
    }

    .btn-secondary:hover,
    .btn-secondary:focus{
      color:var(--color-primary);
      background:#fffaf3;
      border-color:rgba(111,47,59,.34);
      box-shadow:var(--shadow-card);
    }

    .menu-toggle{
      display:none;
      width:46px;
      height:46px;
      border:1px solid var(--color-border);
      border-radius:16px;
      background:#fffaf3;
      color:var(--color-text);
      align-items:center;
      justify-content:center;
      flex-direction:column;
      gap:5px;
      transition:background-color var(--transition), border-color var(--transition);
    }

    .menu-toggle span{
      width:20px;
      height:2px;
      border-radius:2px;
      background:var(--color-primary-dark);
      transition:transform var(--transition), opacity var(--transition);
    }

    .menu-toggle.is-open span:nth-child(1){
      transform:translateY(7px) rotate(45deg);
    }

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

    .menu-toggle.is-open span:nth-child(3){
      transform:translateY(-7px) rotate(-45deg);
    }

    .category-hero{
      padding:62px 0 76px;
      position:relative;
      overflow:hidden;
    }

    .category-hero::before{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(115deg, rgba(255,250,243,.88), rgba(241,226,218,.72)),
        radial-gradient(circle at 78% 12%, rgba(111,47,59,.18), transparent 34%);
      z-index:-2;
    }

    .category-hero::after{
      content:"";
      position:absolute;
      width:520px;
      height:520px;
      right:-180px;
      top:-210px;
      border-radius:50%;
      border:1px solid rgba(111,47,59,.10);
      background:repeating-linear-gradient(135deg, rgba(111,47,59,.05) 0 8px, transparent 8px 18px);
      z-index:-1;
      opacity:.78;
    }

    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin:0 0 18px;
      padding:0;
      list-style:none;
      color:var(--color-faint);
      font-size:14px;
      font-weight:700;
    }

    .breadcrumb li{
      display:inline-flex;
      align-items:center;
      gap:8px;
    }

    .breadcrumb li:not(:last-child)::after{
      content:"/";
      color:#b9a79d;
    }

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

    .hero-panel{
      background:rgba(255,250,243,.72);
      border:1px solid rgba(216,199,189,.82);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-soft);
      padding:36px;
      position:relative;
      overflow:hidden;
    }

    .hero-panel::after{
      content:"";
      position:absolute;
      right:24px;
      bottom:22px;
      width:120px;
      height:120px;
      border-radius:28px;
      background:
        linear-gradient(145deg,rgba(111,47,59,.12),rgba(183,122,85,.12));
      transform:rotate(10deg);
      z-index:0;
    }

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

    .tag-cloud{
      display:flex;
      align-items:center;
      flex-wrap:wrap;
      gap:10px;
      margin-top:24px;
    }

    .tag,
    .badge{
      display:inline-flex;
      align-items:center;
      gap:6px;
      min-height:30px;
      padding:6px 12px;
      border-radius:var(--radius-pill);
      font-size:13px;
      font-weight:800;
      color:#65473c;
      background:#fff7ee;
      border:1px solid rgba(216,199,189,.92);
      white-space:nowrap;
    }

    .tag:hover{
      color:var(--color-primary);
      border-color:rgba(111,47,59,.28);
      background:#fffaf3;
      transform:translateY(-1px);
    }

    .badge-warn{
      background:var(--color-warning-bg);
      color:#6c4c21;
      border-color:rgba(138,101,50,.22);
    }

    .hero-meta{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      margin-top:26px;
    }

    .meta-item{
      padding:17px;
      border-radius:20px;
      background:rgba(255,250,243,.82);
      border:1px solid rgba(216,199,189,.78);
    }

    .meta-item strong{
      display:block;
      font-size:22px;
      line-height:1.1;
      color:var(--color-primary-dark);
      margin-bottom:5px;
      letter-spacing:-.03em;
    }

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

    .notice-strip{
      display:flex;
      align-items:flex-start;
      gap:14px;
      padding:18px 20px;
      border-radius:24px;
      background:var(--color-warning-bg);
      border:1px solid rgba(138,101,50,.22);
      color:#6c4c21;
      margin-top:26px;
    }

    .notice-strip .notice-icon{
      flex:0 0 auto;
      width:36px;
      height:36px;
      border-radius:14px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:#fff8e5;
      font-weight:900;
      color:#76521e;
    }

    .notice-strip p{
      margin:0;
      color:#6c4c21;
      font-size:14px;
      line-height:1.75;
    }

    .index-layout{
      display:grid;
      grid-template-columns:292px minmax(0,1fr);
      gap:28px;
      align-items:start;
    }

    .filter-panel{
      position:sticky;
      top:96px;
      background:rgba(255,250,243,.78);
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      box-shadow:var(--shadow-card);
      padding:22px;
    }

    .filter-title{
      font-size:15px;
      font-weight:900;
      color:var(--color-text);
      margin-bottom:14px;
      display:flex;
      align-items:center;
      justify-content:space-between;
    }

    .filter-title span{
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--color-accent);
      box-shadow:0 0 0 6px rgba(183,122,85,.14);
    }

    .filter-group{
      padding:18px 0;
      border-top:1px solid rgba(216,199,189,.72);
    }

    .filter-group:first-of-type{
      border-top:0;
      padding-top:0;
    }

    .filter-group h3{
      font-size:14px;
      letter-spacing:0;
      margin-bottom:12px;
    }

    .filter-list{
      display:flex;
      flex-direction:column;
      gap:9px;
      margin:0;
      padding:0;
      list-style:none;
    }

    .filter-list a{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:10px;
      padding:11px 12px;
      border-radius:16px;
      color:#544743;
      background:rgba(247,240,232,.55);
      border:1px solid transparent;
      font-size:14px;
      font-weight:750;
    }

    .filter-list a:hover,
    .filter-list a.is-selected{
      color:var(--color-primary-dark);
      background:#fff7ee;
      border-color:rgba(111,47,59,.24);
    }

    .filter-list small{
      color:var(--color-faint);
      font-weight:800;
    }

    .content-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:20px;
      margin-bottom:20px;
    }

    .content-head p{
      max-width:620px;
      margin-bottom:0;
    }

    .sort-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      flex:0 0 auto;
      padding:11px 14px;
      border-radius:var(--radius-pill);
      background:#fffaf3;
      border:1px solid var(--color-border);
      color:var(--color-muted);
      font-size:13px;
      font-weight:800;
    }

    .index-list{
      display:flex;
      flex-direction:column;
      gap:16px;
    }

    .index-card{
      position:relative;
      display:grid;
      grid-template-columns:minmax(0,1fr) auto;
      gap:20px;
      align-items:center;
      padding:26px;
      border-radius:28px;
      background:rgba(255,250,243,.82);
      border:1px solid var(--color-border);
      box-shadow:0 8px 22px rgba(55,34,28,.045);
      overflow:hidden;
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
    }

    .index-card::before{
      content:"";
      position:absolute;
      left:0;
      top:20px;
      bottom:20px;
      width:4px;
      border-radius:0 999px 999px 0;
      background:var(--color-accent);
      opacity:.56;
      transition:opacity var(--transition), background-color var(--transition);
    }

    .index-card:hover{
      transform:translateY(-3px);
      border-color:rgba(111,47,59,.26);
      box-shadow:var(--shadow-card);
      background:#fffaf3;
    }

    .index-card:hover::before{
      opacity:1;
      background:var(--color-primary);
    }

    .card-topline{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:9px;
      margin-bottom:12px;
    }

    .label{
      display:inline-flex;
      align-items:center;
      min-height:27px;
      padding:5px 10px;
      border-radius:var(--radius-pill);
      background:rgba(111,47,59,.08);
      color:var(--color-primary-dark);
      border:1px solid rgba(111,47,59,.12);
      font-size:12px;
      font-weight:900;
    }

    .label.soft{
      background:rgba(183,122,85,.12);
      color:#7b523a;
      border-color:rgba(183,122,85,.18);
    }

    .card-meta{
      color:var(--color-faint);
      font-size:13px;
      font-weight:750;
    }

    .index-card h3{
      font-size:22px;
      margin-bottom:8px;
      letter-spacing:-.025em;
    }

    .index-card p{
      margin:0;
      max-width:730px;
      font-size:15px;
    }

    .enter-btn{
      min-width:112px;
      height:44px;
      padding:0 16px;
      border-radius:var(--radius-pill);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      color:var(--color-primary-dark);
      border:1px solid rgba(111,47,59,.18);
      background:#fff7ee;
      font-size:14px;
      font-weight:900;
    }

    .enter-btn:hover{
      color:#fff8ef;
      background:var(--color-primary);
      border-color:var(--color-primary);
      transform:translateX(2px);
    }

    .boundary-card{
      border-radius:var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(111,47,59,.92), rgba(81,35,45,.96));
      color:#fff7ed;
      padding:34px;
      box-shadow:0 20px 50px rgba(81,35,45,.18);
      overflow:hidden;
      position:relative;
    }

    .boundary-card::after{
      content:"";
      position:absolute;
      width:240px;
      height:240px;
      right:-70px;
      bottom:-90px;
      border-radius:50%;
      border:1px solid rgba(255,248,239,.18);
      background:radial-gradient(circle, rgba(255,248,239,.13), transparent 62%);
    }

    .boundary-card h2,
    .boundary-card p{
      color:#fff7ed;
      position:relative;
      z-index:1;
    }

    .boundary-card p{
      opacity:.82;
      max-width:740px;
    }

    .rules-row{
      position:relative;
      z-index:1;
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:12px;
      margin-top:24px;
    }

    .rule-mini{
      padding:17px;
      border-radius:20px;
      background:rgba(255,250,243,.10);
      border:1px solid rgba(255,250,243,.18);
    }

    .rule-mini strong{
      display:block;
      color:#fff8ef;
      margin-bottom:6px;
      font-size:15px;
    }

    .rule-mini span{
      display:block;
      color:rgba(255,248,239,.72);
      font-size:13px;
      line-height:1.65;
    }

    .related-strip{
      overflow:hidden;
    }

    .related-row{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:16px;
      margin-top:28px;
    }

    .related-card{
      min-height:178px;
      padding:22px;
      border-radius:26px;
      background:rgba(255,250,243,.76);
      border:1px solid var(--color-border);
      box-shadow:0 8px 20px rgba(55,34,28,.045);
      transition:transform var(--transition), border-color var(--transition), box-shadow var(--transition);
    }

    .related-card:hover{
      transform:translateY(-3px);
      border-color:rgba(111,47,59,.25);
      box-shadow:var(--shadow-card);
    }

    .related-card .num{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:34px;
      height:34px;
      border-radius:14px;
      background:var(--color-accent-soft);
      color:var(--color-primary-dark);
      font-weight:900;
      margin-bottom:18px;
    }

    .related-card h3{
      font-size:19px;
      margin-bottom:7px;
    }

    .related-card p{
      margin:0;
      font-size:14px;
      line-height:1.65;
    }

    .process-band{
      display:grid;
      grid-template-columns:.82fr 1.18fr;
      gap:34px;
      align-items:center;
      background:rgba(255,250,243,.68);
      border:1px solid var(--color-border);
      border-radius:var(--radius-lg);
      padding:36px;
      box-shadow:var(--shadow-card);
    }

    .step-list{
      margin:0;
      padding:0;
      list-style:none;
      display:grid;
      gap:13px;
    }

    .step-list li{
      display:grid;
      grid-template-columns:42px minmax(0,1fr);
      gap:14px;
      align-items:start;
      padding:16px;
      border-radius:22px;
      background:rgba(247,240,232,.66);
      border:1px solid rgba(216,199,189,.72);
    }

    .step-no{
      width:42px;
      height:42px;
      border-radius:16px;
      display:flex;
      align-items:center;
      justify-content:center;
      background:var(--color-primary);
      color:#fff8ef;
      font-weight:900;
    }

    .step-list strong{
      display:block;
      color:var(--color-text);
      margin-bottom:4px;
    }

    .step-list span{
      display:block;
      color:var(--color-muted);
      font-size:14px;
      line-height:1.65;
    }

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

    .accordion{
      background:transparent;
      margin-top:28px;
    }

    .accordion-item{
      margin-bottom:14px;
      border-radius:22px;
      overflow:hidden;
      background:rgba(255,250,243,.82);
      border:1px solid var(--color-border);
      box-shadow:0 8px 20px rgba(55,34,28,.04);
    }

    .accordion-title{
      color:var(--color-text);
      font-size:17px;
      font-weight:850;
      padding:20px 56px 20px 22px;
      border:0;
      background:transparent;
    }

    .accordion-title:hover,
    .accordion-title:focus{
      background:#fff7ee;
      color:var(--color-primary-dark);
    }

    .accordion-title::before{
      right:22px;
      margin-top:-9px;
      font-size:24px;
      color:var(--color-primary);
    }

    .accordion-content{
      border:0;
      background:#fffaf3;
      color:var(--color-muted);
      padding:0 22px 22px;
      font-size:15px;
      line-height:1.8;
    }

    .cta-panel{
      border-radius:34px;
      padding:42px;
      background:
        linear-gradient(145deg, rgba(255,250,243,.84), rgba(241,226,218,.78));
      border:1px solid var(--color-border);
      box-shadow:var(--shadow-soft);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:28px;
    }

    .cta-panel p{
      max-width:650px;
      margin-bottom:0;
    }

    .cta-actions{
      display:flex;
      align-items:center;
      gap:12px;
      flex-wrap:wrap;
      flex:0 0 auto;
    }

    .floating-cta{
      position:fixed;
      right:22px;
      bottom:22px;
      z-index:990;
      display:flex;
      align-items:center;
      gap:12px;
      padding:10px 10px 10px 16px;
      border-radius:var(--radius-pill);
      background:rgba(255,250,243,.94);
      border:1px solid rgba(216,199,189,.9);
      box-shadow:0 18px 44px rgba(55,34,28,.14);
      backdrop-filter:blur(14px);
      -webkit-backdrop-filter:blur(14px);
      transition:opacity var(--transition), transform var(--transition);
    }

    .floating-cta.is-hidden{
      opacity:0;
      pointer-events:none;
      transform:translateY(12px);
    }

    .floating-cta small{
      color:var(--color-muted);
      font-weight:800;
      line-height:1.3;
      white-space:nowrap;
    }

    .float-close{
      width:34px;
      height:34px;
      border-radius:50%;
      border:1px solid var(--color-border);
      background:#fff7ee;
      color:var(--color-muted);
      font-size:18px;
      line-height:1;
    }

    .float-close:hover{
      color:var(--color-primary);
      border-color:rgba(111,47,59,.25);
    }

    .footer{
      background:var(--color-dark);
      color:#f8efe7;
      padding:74px 0 34px;
      margin-top:40px;
    }

    .footer-grid{
      display:grid;
      grid-template-columns:1fr .9fr 1.25fr;
      gap:34px;
      align-items:start;
    }

    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:900;
      font-size:20px;
      letter-spacing:-.03em;
      margin-bottom:16px;
    }

    .footer .logo-mark{
      width:40px;
      height:40px;
      box-shadow:none;
      background:linear-gradient(145deg,#9a5360,#6f2f3b);
    }

    .footer-note{
      color:#cbbdb5;
      margin-bottom:20px;
      max-width:390px;
      font-size:14px;
    }

    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }

    .footer-links a{
      display:inline-flex;
      align-items:center;
      min-height:34px;
      padding:0 12px;
      border-radius:var(--radius-pill);
      color:#eadbd2;
      border:1px solid rgba(234,219,210,.15);
      background:rgba(255,255,255,.04);
      font-size:13px;
      font-weight:800;
    }

    .footer-links a:hover{
      color:#ffd9bd;
      border-color:rgba(255,217,189,.35);
      background:rgba(255,255,255,.07);
    }

    .footer-title{
      color:#fff8ef;
      font-weight:900;
      margin-bottom:14px;
      letter-spacing:-.02em;
    }

    .legal-box{
      padding:18px;
      border-radius:22px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(255,255,255,.09);
    }

    .legal-box p{
      color:#cbbdb5;
      margin:0;
      font-size:14px;
      line-height:1.78;
    }

    .feedback-form{
      display:grid;
      gap:12px;
    }

    .field-row{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }

    .field{
      display:flex;
      flex-direction:column;
      gap:7px;
    }

    .field label{
      color:#eadbd2;
      font-size:13px;
      font-weight:800;
    }

    .field input,
    .field textarea,
    .field select{
      width:100%;
      border-radius:15px;
      border:1px solid rgba(234,219,210,.16);
      background:rgba(255,255,255,.07);
      color:#fff8ef;
      min-height:44px;
      padding:10px 12px;
      box-shadow:none;
      transition:border-color var(--transition), box-shadow var(--transition), background-color var(--transition);
    }

    .field select option{
      color:#241b19;
    }

    .field textarea{
      min-height:96px;
      resize:vertical;
    }

    .field input::placeholder,
    .field textarea::placeholder{
      color:rgba(234,219,210,.48);
    }

    .field input:focus,
    .field textarea:focus,
    .field select:focus{
      outline:none;
      border-color:rgba(255,217,189,.62);
      background:rgba(255,255,255,.10);
      box-shadow:0 0 0 4px rgba(183,122,85,.16);
    }

    .form-note{
      color:#bcaea6;
      font-size:12px;
      line-height:1.6;
    }

    .form-status{
      display:none;
      padding:10px 12px;
      border-radius:14px;
      background:rgba(183,122,85,.16);
      color:#ffd9bd;
      border:1px solid rgba(183,122,85,.22);
      font-size:13px;
      font-weight:800;
    }

    .form-status.is-visible{
      display:block;
    }

    .copyright{
      margin-top:42px;
      padding-top:24px;
      border-top:1px solid rgba(255,255,255,.09);
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
      color:#9f928d;
      font-size:13px;
    }

    @media (max-width:1024px){
      .grid-container{
        padding-left:20px;
        padding-right:20px;
      }

      .nav-actions .age-pill{
        display:none;
      }

      .index-layout{
        grid-template-columns:1fr;
      }

      .filter-panel{
        position:relative;
        top:auto;
        padding:18px;
      }

      .filter-list{
        flex-direction:row;
        overflow-x:auto;
        padding-bottom:4px;
        scrollbar-width:none;
      }

      .filter-list::-webkit-scrollbar{
        display:none;
      }

      .filter-list a{
        min-width:max-content;
      }

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

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

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

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

    @media (max-width:780px){
      :root{
        --nav-h:68px;
      }

      .site-nav{
        position:fixed;
        inset:var(--nav-h) 12px auto 12px;
        display:block;
        padding:14px;
        border-radius:26px;
        background:rgba(255,250,243,.98);
        border:1px solid var(--color-border);
        box-shadow:0 24px 70px rgba(55,34,28,.18);
        transform:translateY(-14px);
        opacity:0;
        visibility:hidden;
        pointer-events:none;
        transition:opacity var(--transition), transform var(--transition), visibility var(--transition);
      }

      .site-nav.is-open{
        opacity:1;
        visibility:visible;
        pointer-events:auto;
        transform:translateY(0);
      }

      .nav-links{
        display:flex;
        flex-direction:column;
        align-items:stretch;
        border:0;
        background:transparent;
        padding:0;
        gap:8px;
      }

      .nav-links a{
        justify-content:flex-start;
        min-height:48px;
        padding:0 16px;
        background:rgba(247,240,232,.65);
      }

      .menu-toggle{
        display:flex;
      }

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

      .category-hero{
        padding:42px 0 60px;
      }

      .hero-panel{
        padding:26px;
        border-radius:28px;
      }

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

      .section{
        padding:72px 0;
      }

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

      .content-head{
        align-items:flex-start;
        flex-direction:column;
      }

      .index-card{
        grid-template-columns:1fr;
        padding:22px;
      }

      .enter-btn{
        width:100%;
      }

      .boundary-card,
      .process-band,
      .cta-panel{
        padding:26px;
        border-radius:28px;
      }

      .cta-panel{
        flex-direction:column;
        align-items:flex-start;
      }

      .cta-actions{
        width:100%;
      }

      .cta-actions .btn{
        flex:1 1 160px;
      }

      .floating-cta{
        left:12px;
        right:12px;
        bottom:12px;
        justify-content:space-between;
        border-radius:22px;
      }

      .floating-cta .btn{
        min-height:42px;
        padding:0 14px;
      }

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

    @media (max-width:520px){
      .grid-container{
        padding-left:16px;
        padding-right:16px;
      }

      .brand span:last-child{
        font-size:16px;
        max-width:180px;
        overflow:hidden;
        text-overflow:ellipsis;
      }

      .logo-mark{
        width:38px;
        height:38px;
        border-radius:14px;
      }

      h1{
        font-size:clamp(34px,10vw,42px);
      }

      .lead{
        font-size:16px;
      }

      .tag-cloud{
        align-items:flex-start;
        overflow-x:auto;
        flex-wrap:nowrap;
        padding-bottom:4px;
        scrollbar-width:none;
      }

      .tag-cloud::-webkit-scrollbar{
        display:none;
      }

      .tag,
      .badge{
        flex:0 0 auto;
      }

      .rules-row,
      .related-row{
        grid-template-columns:1fr;
      }

      .notice-strip{
        padding:16px;
        border-radius:20px;
      }

      .footer{
        padding-bottom:96px;
      }

      .copyright{
        flex-direction:column;
      }
    }

    @media (prefers-reduced-motion:reduce){
      *,
      *::before,
      *::after{
        animation-duration:.01ms !important;
        animation-iteration-count:1 !important;
        scroll-behavior:auto !important;
        transition-duration:.01ms !important;
      }
    }

/* roulang page: category2 */
:root {
      --color-bg: #fbf4ea;
      --color-bg-soft: #f4e7de;
      --color-panel: #fffaf3;
      --color-panel-strong: #f0ddd4;
      --color-text: #231918;
      --color-muted: #746762;
      --color-subtle: #9b8a82;
      --color-primary: #67333e;
      --color-primary-dark: #47242d;
      --color-primary-soft: #efe0df;
      --color-accent: #b88358;
      --color-accent-soft: #f3dfc7;
      --color-line: rgba(78, 49, 45, 0.16);
      --color-warning: #8a6235;
      --color-footer: #211716;
      --shadow-sm: 0 10px 28px rgba(69, 40, 36, 0.08);
      --shadow-md: 0 18px 52px rgba(69, 40, 36, 0.13);
      --radius-sm: 14px;
      --radius-md: 22px;
      --radius-lg: 32px;
      --radius-pill: 999px;
      --container: 1200px;
      --nav-height: 72px;
      --ease: 200ms ease;
    }

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

    html {
      scroll-behavior: smooth;
      overflow-x: hidden;
    }

    body {
      margin: 0;
      min-height: 100vh;
      font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", Arial, sans-serif;
      font-size: 16px;
      line-height: 1.75;
      color: var(--color-text);
      background:
        radial-gradient(circle at 12% 0%, rgba(184, 131, 88, 0.18), transparent 30%),
        radial-gradient(circle at 82% 10%, rgba(103, 51, 62, 0.10), transparent 34%),
        linear-gradient(180deg, var(--color-bg) 0%, #fff8f0 42%, #f7ece4 100%);
      overflow-x: hidden;
      text-rendering: optimizeLegibility;
    }

    a {
      color: inherit;
      text-decoration: none;
      transition: color var(--ease), background-color var(--ease), border-color var(--ease), transform var(--ease), box-shadow var(--ease);
    }

    a:hover,
    a:focus {
      color: var(--color-primary);
    }

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

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

    button {
      cursor: pointer;
    }

    ::selection {
      color: #fffaf3;
      background: var(--color-primary);
    }

    .grid-container {
      max-width: var(--container);
      padding-left: 20px;
      padding-right: 20px;
    }

    .site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      min-height: var(--nav-height);
      background: rgba(255, 250, 243, 0.84);
      border-bottom: 1px solid rgba(78, 49, 45, 0.10);
      backdrop-filter: blur(18px);
      transition: background-color var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .site-header.is-scrolled {
      background: rgba(255, 250, 243, 0.96);
      box-shadow: 0 8px 28px rgba(61, 35, 32, 0.08);
      border-bottom-color: rgba(78, 49, 45, 0.16);
    }

    .nav-shell {
      min-height: var(--nav-height);
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 22px;
    }

    .brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      min-width: 0;
      color: var(--color-text);
      font-weight: 800;
      letter-spacing: -0.02em;
    }

    .logo-mark {
      width: 42px;
      height: 42px;
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 15px;
      color: #fff8ef;
      background:
        linear-gradient(135deg, var(--color-primary) 0%, #7d4a42 58%, var(--color-accent) 100%);
      box-shadow: 0 12px 24px rgba(103, 51, 62, 0.22);
      font-size: 16px;
      font-weight: 900;
      line-height: 1;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
      line-height: 1.12;
    }

    .brand-name {
      max-width: 240px;
      font-size: 18px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .brand-sub {
      margin-top: 3px;
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 600;
      letter-spacing: 0.04em;
    }

    .nav-area {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 16px;
      flex: 1 1 auto;
    }

    nav .nav-links {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      margin: 0;
      padding: 6px;
      list-style: none;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-pill);
      background: rgba(255, 250, 243, 0.72);
    }

    .nav-links a {
      position: relative;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 38px;
      padding: 0 16px;
      border-radius: var(--radius-pill);
      color: #3a2a28;
      font-size: 14px;
      font-weight: 700;
      white-space: nowrap;
    }

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

    .nav-links a.active,
    .nav-links a[aria-current="page"] {
      color: #fff8ef;
      background: var(--color-primary);
      box-shadow: 0 8px 20px rgba(103, 51, 62, 0.18);
    }

    .age-chip {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      height: 38px;
      padding: 0 13px;
      border: 1px solid rgba(138, 98, 53, 0.22);
      border-radius: var(--radius-pill);
      color: var(--color-warning);
      background: rgba(243, 223, 199, 0.68);
      font-size: 13px;
      font-weight: 800;
      white-space: nowrap;
    }

    .nav-cta {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      height: 40px;
      padding: 0 18px;
      border-radius: var(--radius-pill);
      color: #fff8ef;
      background: var(--color-primary);
      font-size: 14px;
      font-weight: 800;
      box-shadow: 0 12px 26px rgba(103, 51, 62, 0.20);
    }

    .nav-cta:hover,
    .nav-cta:focus {
      color: #fff8ef;
      background: var(--color-primary-dark);
      transform: translateY(-2px);
    }

    .menu-toggle {
      display: none;
      width: 44px;
      height: 44px;
      align-items: center;
      justify-content: center;
      border: 1px solid var(--color-line);
      border-radius: 16px;
      color: var(--color-text);
      background: rgba(255, 250, 243, 0.86);
    }

    .menu-toggle span,
    .menu-toggle span::before,
    .menu-toggle span::after {
      display: block;
      width: 18px;
      height: 2px;
      border-radius: 99px;
      background: currentColor;
      transition: transform var(--ease), opacity var(--ease);
      content: "";
    }

    .menu-toggle span::before {
      transform: translateY(-6px);
    }

    .menu-toggle span::after {
      transform: translateY(4px);
    }

    .menu-toggle.is-open span {
      transform: rotate(45deg);
    }

    .menu-toggle.is-open span::before {
      transform: translateY(0) rotate(90deg);
    }

    .menu-toggle.is-open span::after {
      opacity: 0;
    }

    .btn {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 48px;
      padding: 0 22px;
      border: 1px solid transparent;
      border-radius: var(--radius-pill);
      font-weight: 850;
      letter-spacing: -0.01em;
      line-height: 1;
      transition: transform var(--ease), box-shadow var(--ease), background-color var(--ease), color var(--ease), border-color var(--ease);
    }

    .btn-primary {
      color: #fffaf3;
      background: var(--color-primary);
      box-shadow: 0 14px 30px rgba(103, 51, 62, 0.20);
    }

    .btn-primary:hover,
    .btn-primary:focus {
      color: #fffaf3;
      background: var(--color-primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 18px 38px rgba(103, 51, 62, 0.25);
    }

    .btn-secondary {
      color: var(--color-primary);
      background: rgba(255, 250, 243, 0.72);
      border-color: rgba(103, 51, 62, 0.22);
    }

    .btn-secondary:hover,
    .btn-secondary:focus {
      color: var(--color-primary-dark);
      background: var(--color-primary-soft);
      border-color: rgba(103, 51, 62, 0.34);
      transform: translateY(-2px);
    }

    .btn:focus-visible,
    .nav-links a:focus-visible,
    .brand:focus-visible,
    .menu-toggle:focus-visible,
    input:focus-visible,
    select:focus-visible,
    textarea:focus-visible,
    summary:focus-visible {
      outline: 3px solid rgba(184, 131, 88, 0.36);
      outline-offset: 3px;
    }

    .btn:active,
    .nav-cta:active,
    .card:active {
      transform: translateY(0);
    }

    .hero-guide {
      position: relative;
      padding: 72px 0 52px;
      overflow: hidden;
    }

    .hero-guide::before {
      position: absolute;
      inset: 0;
      z-index: -2;
      content: "";
      background:
        linear-gradient(180deg, rgba(255, 250, 243, 0.45), rgba(255, 250, 243, 0)),
        radial-gradient(circle at 70% 12%, rgba(103, 51, 62, 0.10), transparent 35%);
    }

    .hero-guide::after {
      position: absolute;
      right: -140px;
      top: 18px;
      z-index: -1;
      width: 410px;
      height: 410px;
      border: 1px solid rgba(103, 51, 62, 0.12);
      border-radius: 50%;
      background: radial-gradient(circle, rgba(184, 131, 88, 0.10), transparent 65%);
      content: "";
    }

    .breadcrumb {
      display: inline-flex;
      flex-wrap: wrap;
      align-items: center;
      gap: 8px;
      margin: 0 auto 18px;
      padding: 8px 14px;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-pill);
      color: var(--color-muted);
      background: rgba(255, 250, 243, 0.76);
      font-size: 13px;
      font-weight: 700;
    }

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

    .hero-center {
      max-width: 860px;
      margin: 0 auto;
      text-align: center;
    }

    .eyebrow {
      display: inline-flex;
      align-items: center;
      gap: 9px;
      margin-bottom: 20px;
      padding: 9px 14px;
      border: 1px solid rgba(138, 98, 53, 0.22);
      border-radius: var(--radius-pill);
      color: var(--color-warning);
      background: rgba(243, 223, 199, 0.72);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: 0.02em;
    }

    .eyebrow::before {
      width: 8px;
      height: 8px;
      border-radius: 50%;
      background: var(--color-accent);
      content: "";
    }

    h1,
    h2,
    h3,
    p {
      margin-top: 0;
    }

    h1 {
      margin-bottom: 22px;
      font-size: clamp(2.2rem, 6vw, 4.25rem);
      line-height: 1.08;
      letter-spacing: -0.07em;
      color: var(--color-text);
    }

    h1 .highlight {
      color: var(--color-primary);
      text-decoration: underline;
      text-decoration-color: rgba(184, 131, 88, 0.38);
      text-decoration-thickness: 10px;
      text-underline-offset: -5px;
    }

    .hero-lead {
      max-width: 730px;
      margin: 0 auto 28px;
      color: var(--color-muted);
      font-size: clamp(1rem, 2.2vw, 1.18rem);
      line-height: 1.9;
    }

    .hero-actions {
      display: flex;
      flex-wrap: wrap;
      align-items: center;
      justify-content: center;
      gap: 12px;
      margin-bottom: 30px;
    }

    .mini-toc {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 12px;
      max-width: 960px;
      margin: 0 auto;
      padding: 14px;
      border: 1px solid var(--color-line);
      border-radius: 26px;
      background: rgba(255, 250, 243, 0.68);
      box-shadow: var(--shadow-sm);
    }

    .mini-toc a {
      min-height: 54px;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 10px;
      border-radius: 18px;
      color: #453230;
      background: rgba(244, 231, 222, 0.55);
      font-size: 14px;
      font-weight: 850;
      text-align: center;
    }

    .mini-toc a:hover {
      color: #fffaf3;
      background: var(--color-primary);
      transform: translateY(-2px);
    }

    .section {
      padding: 86px 0;
    }

    .section-tight {
      padding-top: 54px;
    }

    .section-head {
      max-width: 760px;
      margin-bottom: 34px;
    }

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

    .section-kicker {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      margin-bottom: 12px;
      color: var(--color-primary);
      font-size: 13px;
      font-weight: 900;
      letter-spacing: 0.08em;
    }

    .section-kicker::before {
      width: 26px;
      height: 1px;
      background: var(--color-accent);
      content: "";
    }

    h2 {
      margin-bottom: 14px;
      color: var(--color-text);
      font-size: clamp(1.75rem, 3.4vw, 2.65rem);
      line-height: 1.16;
      letter-spacing: -0.045em;
    }

    h3 {
      margin-bottom: 10px;
      color: var(--color-text);
      font-size: 1.22rem;
      line-height: 1.35;
      letter-spacing: -0.02em;
    }

    .section-desc {
      margin-bottom: 0;
      color: var(--color-muted);
      font-size: 17px;
      line-height: 1.9;
    }

    .notice-strip {
      display: grid;
      grid-template-columns: auto 1fr auto;
      align-items: center;
      gap: 18px;
      padding: 22px 24px;
      border: 1px solid rgba(138, 98, 53, 0.24);
      border-radius: var(--radius-lg);
      background:
        linear-gradient(135deg, rgba(243, 223, 199, 0.92), rgba(255, 250, 243, 0.76));
      box-shadow: var(--shadow-sm);
    }

    .notice-icon {
      width: 58px;
      height: 58px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 22px;
      color: #fff8ef;
      background: var(--color-warning);
      font-size: 18px;
      font-weight: 950;
    }

    .notice-strip strong {
      display: block;
      margin-bottom: 4px;
      font-size: 18px;
      color: #3b2824;
    }

    .notice-strip p {
      margin-bottom: 0;
      color: var(--color-muted);
      line-height: 1.75;
    }

    .layout-doc {
      align-items: flex-start;
    }

    .chapter-nav {
      position: sticky;
      top: 94px;
      padding: 20px;
      border: 1px solid var(--color-line);
      border-radius: 26px;
      background: rgba(255, 250, 243, 0.78);
      box-shadow: var(--shadow-sm);
    }

    .chapter-nav .title {
      margin-bottom: 14px;
      color: var(--color-text);
      font-size: 14px;
      font-weight: 900;
    }

    .chapter-nav a {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 11px 12px;
      border-radius: 15px;
      color: var(--color-muted);
      font-size: 14px;
      font-weight: 760;
    }

    .chapter-nav a::before {
      width: 6px;
      height: 6px;
      border-radius: 99px;
      background: rgba(103, 51, 62, 0.28);
      content: "";
    }

    .chapter-nav a:hover {
      color: var(--color-primary);
      background: var(--color-primary-soft);
    }

    .doc-stack {
      display: grid;
      gap: 20px;
    }

    .card {
      position: relative;
      padding: 30px;
      border: 1px solid var(--color-line);
      border-radius: var(--radius-lg);
      background: rgba(255, 250, 243, 0.84);
      box-shadow: var(--shadow-sm);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease), background-color var(--ease);
    }

    .card:hover {
      transform: translateY(-3px);
      border-color: rgba(103, 51, 62, 0.28);
      box-shadow: var(--shadow-md);
    }

    .chapter-card {
      overflow: hidden;
    }

    .chapter-card::after {
      position: absolute;
      right: -42px;
      top: -42px;
      width: 130px;
      height: 130px;
      border-radius: 50%;
      background: radial-gradient(circle, rgba(184, 131, 88, 0.16), transparent 70%);
      content: "";
    }

    .chapter-top {
      display: flex;
      align-items: flex-start;
      gap: 18px;
      margin-bottom: 16px;
    }

    .chapter-no {
      width: 46px;
      height: 46px;
      flex: 0 0 auto;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border-radius: 17px;
      color: var(--color-primary);
      background: var(--color-primary-soft);
      font-weight: 950;
    }

    .chapter-card p {
      max-width: 740px;
      color: var(--color-muted);
    }

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

    .rule-list li {
      position: relative;
      padding: 13px 15px 13px 38px;
      border: 1px solid rgba(78, 49, 45, 0.10);
      border-radius: 17px;
      color: #4e3a36;
      background: rgba(244, 231, 222, 0.46);
      font-weight: 650;
    }

    .rule-list li::before {
      position: absolute;
      left: 15px;
      top: 19px;
      width: 9px;
      height: 9px;
      border-radius: 50%;
      background: var(--color-accent);
      content: "";
    }

    .tag-row {
      display: flex;
      flex-wrap: wrap;
      gap: 8px;
      margin-top: 18px;
    }

    .badge,
    .tag {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-height: 28px;
      padding: 5px 11px;
      border-radius: var(--radius-pill);
      font-size: 12px;
      font-weight: 900;
      line-height: 1;
    }

    .badge {
      color: var(--color-warning);
      background: rgba(243, 223, 199, 0.86);
      border: 1px solid rgba(138, 98, 53, 0.18);
    }

    .tag {
      color: var(--color-primary);
      background: rgba(103, 51, 62, 0.08);
      border: 1px solid rgba(103, 51, 62, 0.13);
    }

    .flow-panel {
      padding: 34px;
      border: 1px solid rgba(103, 51, 62, 0.15);
      border-radius: 34px;
      background:
        linear-gradient(135deg, rgba(103, 51, 62, 0.94), rgba(65, 34, 39, 0.96)),
        radial-gradient(circle at 90% 20%, rgba(184, 131, 88, 0.24), transparent 34%);
      color: #fff8ef;
      box-shadow: var(--shadow-md);
    }

    .flow-panel h2,
    .flow-panel h3 {
      color: #fff8ef;
    }

    .flow-panel .section-desc {
      color: rgba(255, 250, 243, 0.74);
    }

    .flow-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 14px;
      margin-top: 26px;
    }

    .flow-step {
      padding: 20px;
      border: 1px solid rgba(255, 250, 243, 0.16);
      border-radius: 24px;
      background: rgba(255, 250, 243, 0.08);
    }

    .flow-step .num {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      margin-bottom: 14px;
      border-radius: 12px;
      color: #2b1a18;
      background: var(--color-accent-soft);
      font-weight: 950;
    }

    .flow-step p {
      margin-bottom: 0;
      color: rgba(255, 250, 243, 0.72);
      font-size: 14px;
      line-height: 1.7;
    }

    .level-grid {
      display: grid;
      grid-template-columns: repeat(3, minmax(0, 1fr));
      gap: 16px;
    }

    .level-card {
      min-height: 100%;
      padding: 24px;
      border: 1px solid var(--color-line);
      border-radius: 28px;
      background: rgba(255, 250, 243, 0.80);
      transition: transform var(--ease), box-shadow var(--ease), border-color var(--ease);
    }

    .level-card:hover {
      transform: translateY(-3px);
      border-color: rgba(103, 51, 62, 0.26);
      box-shadow: var(--shadow-sm);
    }

    .level-card .badge {
      margin-bottom: 14px;
    }

    .level-card p {
      margin-bottom: 0;
      color: var(--color-muted);
      font-size: 15px;
      line-height: 1.8;
    }

    .accordion {
      margin: 0;
      background: transparent;
    }

    .accordion-item {
      margin-bottom: 12px;
      border: 1px solid var(--color-line);
      border-radius: 22px;
      overflow: hidden;
      background: rgba(255, 250, 243, 0.82);
      box-shadow: var(--shadow-sm);
    }

    .accordion-title {
      display: flex;
      align-items: center;
      min-height: 64px;
      padding: 18px 54px 18px 22px;
      border: 0;
      color: var(--color-text);
      font-size: 17px;
      font-weight: 850;
      line-height: 1.45;
      background: transparent;
    }

    .accordion-title:hover,
    .accordion-title:focus {
      color: var(--color-primary);
      background: var(--color-primary-soft);
    }

    .accordion-title::before {
      right: 22px;
      margin-top: -12px;
      color: var(--color-primary);
      font-size: 24px;
      font-weight: 400;
    }

    .accordion-content {
      padding: 0 22px 22px;
      border: 0;
      color: var(--color-muted);
      background: transparent;
      line-height: 1.85;
    }

    .accordion-content p {
      margin-bottom: 0;
    }

    .cta-panel {
      position: relative;
      overflow: hidden;
      padding: 44px;
      border-radius: 36px;
      background:
        linear-gradient(135deg, rgba(255, 250, 243, 0.92), rgba(244, 231, 222, 0.88)),
        radial-gradient(circle at 86% 18%, rgba(184, 131, 88, 0.22), transparent 35%);
      border: 1px solid var(--color-line);
      box-shadow: var(--shadow-md);
    }

    .cta-panel::after {
      position: absolute;
      right: 34px;
      bottom: -54px;
      width: 180px;
      height: 180px;
      border: 1px solid rgba(103, 51, 62, 0.12);
      border-radius: 50%;
      content: "";
    }

    .cta-panel p {
      max-width: 700px;
      color: var(--color-muted);
      font-size: 17px;
    }

    .cta-actions {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 24px;
    }

    .footer {
      padding: 72px 0 28px;
      color: rgba(255, 250, 243, 0.76);
      background:
        radial-gradient(circle at 12% 12%, rgba(184, 131, 88, 0.18), transparent 30%),
        linear-gradient(180deg, #2a1c1a 0%, var(--color-footer) 100%);
    }

    .footer-grid {
      display: grid;
      grid-template-columns: 0.95fr 0.9fr 1.35fr;
      gap: 30px;
      align-items: start;
    }

    .footer-brand {
      display: inline-flex;
      align-items: center;
      gap: 12px;
      margin-bottom: 16px;
      color: #fff8ef;
      font-size: 18px;
      font-weight: 900;
      letter-spacing: -0.02em;
    }

    .footer-note {
      max-width: 360px;
      color: rgba(255, 250, 243, 0.66);
      font-size: 14px;
      line-height: 1.85;
    }

    .footer-links {
      display: flex;
      flex-wrap: wrap;
      gap: 10px;
      margin-top: 18px;
    }

    .footer-links a {
      display: inline-flex;
      align-items: center;
      min-height: 34px;
      padding: 0 12px;
      border: 1px solid rgba(255, 250, 243, 0.12);
      border-radius: var(--radius-pill);
      color: rgba(255, 250, 243, 0.74);
      font-size: 13px;
      font-weight: 800;
    }

    .footer-links a:hover {
      color: #fff8ef;
      border-color: rgba(184, 131, 88, 0.46);
      background: rgba(184, 131, 88, 0.16);
    }

    .footer-title {
      margin-bottom: 14px;
      color: #fff8ef;
      font-size: 14px;
      font-weight: 950;
      letter-spacing: 0.06em;
    }

    .legal-box {
      padding: 18px;
      border: 1px solid rgba(255, 250, 243, 0.12);
      border-radius: 22px;
      background: rgba(255, 250, 243, 0.06);
    }

    .legal-box p {
      margin-bottom: 0;
      color: rgba(255, 250, 243, 0.68);
      font-size: 14px;
      line-height: 1.85;
    }

    .feedback-form {
      display: grid;
      gap: 12px;
    }

    .field-row {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 12px;
    }

    .field label {
      display: block;
      margin-bottom: 6px;
      color: rgba(255, 250, 243, 0.78);
      font-size: 12px;
      font-weight: 850;
    }

    .field input,
    .field select,
    .field textarea {
      width: 100%;
      min-height: 44px;
      margin: 0;
      padding: 10px 12px;
      border: 1px solid rgba(255, 250, 243, 0.14);
      border-radius: 15px;
      color: #fff8ef;
      background: rgba(255, 250, 243, 0.07);
      box-shadow: none;
      transition: border-color var(--ease), box-shadow var(--ease), background-color var(--ease);
    }

    .field select {
      appearance: none;
      background-image: linear-gradient(45deg, transparent 50%, rgba(255,250,243,.7) 50%), linear-gradient(135deg, rgba(255,250,243,.7) 50%, transparent 50%);
      background-position: calc(100% - 18px) 19px, calc(100% - 12px) 19px;
      background-size: 6px 6px, 6px 6px;
      background-repeat: no-repeat;
    }

    .field input::placeholder,
    .field textarea::placeholder {
      color: rgba(255, 250, 243, 0.40);
    }

    .field textarea {
      min-height: 96px;
      resize: vertical;
    }

    .field input:focus,
    .field select:focus,
    .field textarea:focus {
      border-color: rgba(184, 131, 88, 0.74);
      background: rgba(255, 250, 243, 0.10);
      box-shadow: 0 0 0 4px rgba(184, 131, 88, 0.12);
    }

    .form-note {
      color: rgba(255, 250, 243, 0.52);
      font-size: 12px;
      line-height: 1.6;
    }

    .form-status {
      display: none;
      padding: 10px 12px;
      border: 1px solid rgba(184, 131, 88, 0.34);
      border-radius: 14px;
      color: #ffe8c8;
      background: rgba(184, 131, 88, 0.13);
      font-size: 13px;
      font-weight: 760;
    }

    .footer-bottom {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      margin-top: 40px;
      padding-top: 22px;
      border-top: 1px solid rgba(255, 250, 243, 0.10);
      color: rgba(255, 250, 243, 0.48);
      font-size: 13px;
    }

    .floating-cta {
      position: fixed;
      right: 22px;
      bottom: 22px;
      z-index: 900;
      display: flex;
      align-items: center;
      gap: 10px;
      max-width: 330px;
      padding: 10px;
      border: 1px solid rgba(103, 51, 62, 0.16);
      border-radius: 24px;
      background: rgba(255, 250, 243, 0.92);
      box-shadow: 0 16px 46px rgba(69, 40, 36, 0.18);
      backdrop-filter: blur(16px);
      transition: transform var(--ease), opacity var(--ease);
    }

    .floating-cta.is-hidden {
      opacity: 0;
      pointer-events: none;
      transform: translateY(16px);
    }

    .floating-cta .small-text {
      color: var(--color-muted);
      font-size: 12px;
      font-weight: 750;
      line-height: 1.35;
    }

    .floating-cta .btn {
      min-height: 40px;
      padding: 0 15px;
      font-size: 13px;
      white-space: nowrap;
    }

    .float-close {
      width: 30px;
      height: 30px;
      display: inline-flex;
      align-items: center;
      justify-content: center;
      border: 0;
      border-radius: 50%;
      color: var(--color-muted);
      background: var(--color-primary-soft);
      font-size: 18px;
      line-height: 1;
    }

    .float-close:hover {
      color: #fffaf3;
      background: var(--color-primary);
    }

    @media (max-width: 1024px) {
      .brand-name {
        max-width: 190px;
      }

      .nav-area {
        gap: 10px;
      }

      .age-chip,
      .nav-cta {
        display: none;
      }

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

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

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

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

      .footer-note {
        max-width: 640px;
      }
    }

    @media (max-width: 760px) {
      :root {
        --nav-height: 66px;
      }

      .grid-container {
        padding-left: 16px;
        padding-right: 16px;
      }

      .brand-name {
        max-width: 170px;
        font-size: 16px;
      }

      .brand-sub {
        display: none;
      }

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

      .nav-area {
        position: fixed;
        left: 12px;
        right: 12px;
        top: calc(var(--nav-height) + 10px);
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 14px;
        border: 1px solid var(--color-line);
        border-radius: 26px;
        background: rgba(255, 250, 243, 0.98);
        box-shadow: var(--shadow-md);
      }

      .nav-area.is-open {
        display: flex;
      }

      nav .nav-links {
        display: grid;
        grid-template-columns: 1fr;
        width: 100%;
        border-radius: 20px;
        background: rgba(244, 231, 222, 0.55);
      }

      .nav-links a {
        width: 100%;
        min-height: 44px;
      }

      .nav-area .age-chip,
      .nav-area .nav-cta {
        display: inline-flex;
        width: 100%;
        justify-content: center;
      }

      .hero-guide {
        padding: 50px 0 36px;
      }

      .hero-actions {
        align-items: stretch;
        flex-direction: column;
      }

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

      .mini-toc {
        grid-template-columns: 1fr;
        border-radius: 22px;
      }

      .section {
        padding: 64px 0;
      }

      .section-tight {
        padding-top: 40px;
      }

      .notice-strip {
        grid-template-columns: 1fr;
        padding: 20px;
      }

      .notice-strip .btn {
        width: 100%;
      }

      .chapter-nav {
        position: static;
        margin-bottom: 22px;
      }

      .chapter-nav .links {
        display: flex;
        gap: 8px;
        overflow-x: auto;
        padding-bottom: 6px;
      }

      .chapter-nav a {
        flex: 0 0 auto;
        white-space: nowrap;
      }

      .card,
      .flow-panel,
      .cta-panel {
        padding: 22px;
        border-radius: 26px;
      }

      .chapter-top {
        flex-direction: column;
        gap: 12px;
      }

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

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

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

      .floating-cta {
        right: 12px;
        bottom: 12px;
        left: 12px;
        max-width: none;
        justify-content: space-between;
        border-radius: 22px;
      }

      .floating-cta .small-text {
        display: none;
      }

      .floating-cta .btn {
        flex: 1;
      }
    }

    @media (max-width: 520px) {
      h1 {
        letter-spacing: -0.055em;
      }

      .breadcrumb {
        justify-content: center;
        border-radius: 18px;
      }

      .section-desc,
      .hero-lead {
        font-size: 15.5px;
      }

      .footer-links {
        flex-direction: column;
      }

      .footer-links a {
        justify-content: center;
      }
    }

    @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.001ms !important;
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
      }
    }