/* roulang page: index */
:root{
      --ink:#2B2038;
      --plum:#3A2A4D;
      --violet:#5B3F7A;
      --rose:#B77A8B;
      --blush:#F2D8D8;
      --paper:#FAF7F4;
      --warm:#F7F2EF;
      --amber:#D9853B;
      --coral:#C96B5A;
      --text:#342B3D;
      --muted:#746B7C;
      --line:rgba(58,42,77,.13);
      --card:#ffffff;
      --shadow:0 18px 48px rgba(43,32,56,.10);
      --shadowLift:0 24px 70px rgba(43,32,56,.16);
      --radius:28px;
      --radiusSmall:18px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,system-ui,sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 15% 5%, rgba(242,216,216,.85), transparent 30%),
        radial-gradient(circle at 85% 12%, rgba(91,63,122,.14), transparent 28%),
        linear-gradient(180deg, #FAF7F4 0%, #F8F2EF 46%, #FAF7F4 100%);
      line-height:1.78;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img,svg{max-width:100%;display:block}
    button,input{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(183,122,139,.28);color:var(--ink)}
    .site-container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .skip-link{position:absolute;left:-999px;top:12px;background:#fff;color:var(--ink);padding:10px 14px;border-radius:999px;z-index:999}
    .skip-link:focus{left:16px;outline:3px solid rgba(217,133,59,.45)}
    .site-header{
      position:sticky;top:0;z-index:80;
      background:rgba(250,247,244,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--line);
    }
    .nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand-mark{
      width:42px;height:42px;border-radius:16px;
      background:linear-gradient(135deg,var(--plum),var(--rose));
      box-shadow:0 12px 28px rgba(58,42,77,.22);
      display:grid;place-items:center;color:#fff;font-weight:800;letter-spacing:.5px;
      flex:0 0 auto;
    }
    .brand-text{font-weight:800;color:var(--ink);font-size:18px;line-height:1.25;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:330px}
    .age-chip{display:inline-flex;align-items:center;gap:5px;padding:4px 9px;border-radius:999px;background:rgba(217,133,59,.12);color:#8a4b1e;font-size:12px;font-weight:700;margin-left:2px}
    .desktop-nav{display:flex;align-items:center;gap:8px}
    .nav-link{
      position:relative;
      padding:10px 15px;border-radius:999px;
      color:#5f5667;font-size:15px;font-weight:650;
      transition:color .2s ease, background .2s ease, transform .2s ease;
    }
    .nav-link:hover{background:rgba(91,63,122,.08);color:var(--ink);transform:translateY(-1px)}
    .nav-link.active{background:#fff;color:var(--plum);box-shadow:0 8px 22px rgba(43,32,56,.08)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:46px;padding:12px 20px;border-radius:999px;
      border:1px solid transparent;font-weight:760;line-height:1.2;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      user-select:none;
    }
    .btn:focus-visible,.nav-link:focus-visible,.menu-toggle:focus-visible,.carousel-btn:focus-visible,summary:focus-visible{
      outline:3px solid rgba(217,133,59,.42);
      outline-offset:3px;
    }
    .btn-primary{background:linear-gradient(135deg,var(--amber),var(--coral));color:#fff;box-shadow:0 14px 30px rgba(201,107,90,.24)}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px rgba(201,107,90,.32);filter:saturate(1.05)}
    .btn-secondary{background:#fff;color:var(--ink);border-color:var(--line);box-shadow:0 10px 26px rgba(43,32,56,.06)}
    .btn-secondary:hover{background:rgba(242,216,216,.34);transform:translateY(-2px);border-color:rgba(183,122,139,.30)}
    .btn-ghost{background:rgba(91,63,122,.08);color:var(--plum);border-color:rgba(91,63,122,.09)}
    .btn-ghost:hover{background:rgba(91,63,122,.13);transform:translateY(-2px)}
    .menu-toggle{display:none;width:46px;height:46px;border:1px solid var(--line);border-radius:16px;background:#fff;color:var(--ink);align-items:center;justify-content:center}
    .mobile-panel{display:none;border-top:1px solid var(--line);padding:14px 0 18px;background:rgba(250,247,244,.96)}
    .mobile-panel.open{display:block;animation:drop .2s ease}
    @keyframes drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
    .mobile-panel .nav-link{display:flex;margin:6px 0;border-radius:16px}
    main{overflow:hidden}
    .section{padding:92px 0}
    .section-sm{padding:68px 0}
    .hero{position:relative;padding:78px 0 64px}
    .hero:before{
      content:"";position:absolute;inset:0;
      background:
        radial-gradient(circle at 75% 30%, rgba(183,122,139,.22), transparent 28%),
        radial-gradient(circle at 25% 78%, rgba(91,63,122,.10), transparent 30%);
      pointer-events:none;
    }
    .hero-grid{position:relative;display:grid;grid-template-columns:1.03fr .97fr;gap:56px;align-items:center}
    .eyebrow{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px}
    .badge{
      display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:999px;
      background:#fff;border:1px solid var(--line);color:var(--plum);font-size:13px;font-weight:760;
      box-shadow:0 8px 22px rgba(43,32,56,.05);
    }
    .badge.warn{background:rgba(217,133,59,.12);color:#8a4b1e;border-color:rgba(217,133,59,.18)}
    h1{
      margin:0;color:var(--ink);font-size:clamp(38px, 5.3vw, 64px);
      line-height:1.13;letter-spacing:-1.2px;font-weight:850;
    }
    .hero-lead{margin:22px 0 0;color:#62596b;font-size:18px;line-height:1.88;max-width:690px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
    .meta-strip{
      margin-top:24px;display:grid;grid-template-columns:repeat(4, minmax(0,1fr));gap:10px;
      max-width:680px;
    }
    .meta-item{
      background:rgba(255,255,255,.74);border:1px solid var(--line);border-radius:18px;
      padding:12px 14px;box-shadow:0 8px 24px rgba(43,32,56,.05);
    }
    .meta-item span{display:block;color:var(--muted);font-size:12px;line-height:1.3}
    .meta-item strong{display:block;color:var(--ink);font-size:15px;margin-top:4px;line-height:1.25}
    .device-card{
      position:relative;border-radius:36px;padding:18px;
      background:linear-gradient(145deg, rgba(255,255,255,.92), rgba(247,242,239,.72));
      border:1px solid rgba(58,42,77,.12);box-shadow:var(--shadowLift);
    }
    .device-card:before{content:"";position:absolute;inset:-28px;border-radius:48px;background:radial-gradient(circle, rgba(183,122,139,.18), transparent 62%);z-index:-1}
    .mock-window{
      border-radius:28px;background:#fff;border:1px solid var(--line);overflow:hidden;
      min-height:520px;position:relative;
    }
    .mock-top{height:54px;background:linear-gradient(90deg,#fff,#F7F2EF);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 18px}
    .dots{display:flex;gap:7px}.dots i{width:10px;height:10px;border-radius:50%;background:var(--blush)}.dots i:nth-child(2){background:rgba(217,133,59,.45)}.dots i:nth-child(3){background:rgba(91,63,122,.35)}
    .mock-body{padding:20px}
    .screen-hero{border-radius:24px;background:linear-gradient(135deg,#3A2A4D,#B77A8B);padding:20px;color:#fff;min-height:152px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
    .screen-hero:after{content:"";position:absolute;width:180px;height:180px;border-radius:50%;background:rgba(255,255,255,.15);right:-62px;top:-74px}
    .progress{height:10px;background:rgba(255,255,255,.25);border-radius:999px;overflow:hidden;margin-top:16px}
    .progress span{display:block;height:100%;width:72%;background:#fff;border-radius:999px}
    .mock-list{display:grid;gap:12px;margin-top:18px}
    .mock-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px;border:1px solid var(--line);border-radius:18px;background:#fff}
    .mock-icon{width:42px;height:42px;border-radius:14px;background:rgba(242,216,216,.55);display:grid;place-items:center;color:var(--plum);font-weight:800}
    .mock-row small{color:var(--muted);display:block;margin-top:2px}
    .switch{width:50px;height:28px;border-radius:999px;background:rgba(91,63,122,.14);position:relative;flex:0 0 auto}
    .switch:after{content:"";position:absolute;width:22px;height:22px;border-radius:50%;background:var(--violet);right:3px;top:3px;box-shadow:0 4px 10px rgba(43,32,56,.2)}
    .trust-bar{position:relative;margin-top:36px}
    .trust-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
    .trust-item{background:#fff;border:1px solid var(--line);border-radius:20px;padding:16px;display:flex;align-items:center;gap:10px;color:var(--ink);font-weight:760;box-shadow:0 10px 26px rgba(43,32,56,.05)}
    .trust-item span{width:30px;height:30px;border-radius:11px;background:rgba(91,63,122,.09);display:grid;place-items:center;color:var(--violet)}
    .section-title{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}
    .section-title h2{margin:0;color:var(--ink);font-size:clamp(28px,3.5vw,42px);line-height:1.22;font-weight:850;letter-spacing:-.4px}
    .section-title p{margin:10px 0 0;color:var(--muted);font-size:17px;max-width:680px}
    .value-layout{display:grid;grid-template-columns:.82fr 1.18fr;gap:26px;align-items:stretch}
    .intro-card{border-radius:var(--radius);background:linear-gradient(145deg,#fff,rgba(242,216,216,.35));border:1px solid var(--line);padding:30px;box-shadow:var(--shadow)}
    .intro-card h3{margin:0 0 12px;color:var(--ink);font-size:24px;font-weight:820}
    .intro-card p{color:var(--muted);margin:0}
    .mini-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px}
    .mini-stat{border-radius:20px;background:rgba(255,255,255,.72);border:1px solid var(--line);padding:16px}
    .mini-stat b{display:block;color:var(--ink);font-size:24px;line-height:1}
    .mini-stat span{display:block;margin-top:7px;color:var(--muted);font-size:13px}
    .feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
    .feature-card{border-radius:24px;background:#fff;border:1px solid var(--line);padding:22px;box-shadow:0 12px 30px rgba(43,32,56,.06);transition:.22s ease}
    .feature-card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:rgba(183,122,139,.28)}
    .feature-card .icon{width:44px;height:44px;border-radius:16px;background:rgba(183,122,139,.13);display:grid;place-items:center;color:var(--plum);font-weight:850;margin-bottom:14px}
    .feature-card h3{margin:0 0 8px;color:var(--ink);font-size:20px;font-weight:820}
    .feature-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.75}
    .screens-section{background:rgba(255,255,255,.50);border-top:1px solid rgba(58,42,77,.06);border-bottom:1px solid rgba(58,42,77,.06)}
    .carousel-shell{position:relative}
    .carousel-track{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .shot-card{min-height:310px;border-radius:28px;border:1px solid var(--line);background:#fff;box-shadow:var(--shadow);padding:18px;transition:.22s ease;overflow:hidden}
    .shot-card:hover{transform:translateY(-3px)}
    .shot-ui{height:100%;border-radius:22px;background:linear-gradient(180deg,#FAF7F4,#fff);border:1px solid rgba(58,42,77,.10);padding:16px;position:relative}
    .shot-ui:before{content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 0%, rgba(183,122,139,.18), transparent 35%);pointer-events:none}
    .shot-title{position:relative;font-weight:820;color:var(--ink);font-size:18px;margin-bottom:12px}
    .blur-line{height:14px;border-radius:999px;background:rgba(91,63,122,.12);margin:10px 0}
    .blur-line.short{width:58%}.blur-line.mid{width:78%}
    .panel-stack{position:relative;display:grid;gap:10px;margin-top:20px}
    .panel{border-radius:18px;background:#fff;border:1px solid var(--line);padding:14px;display:flex;justify-content:space-between;align-items:center;color:var(--muted)}
    .carousel-controls{display:flex;align-items:center;justify-content:center;gap:10px;margin-top:22px}
    .carousel-btn{width:44px;height:44px;border-radius:999px;border:1px solid var(--line);background:#fff;color:var(--ink);display:grid;place-items:center;transition:.2s ease}
    .carousel-btn:hover{transform:translateY(-2px);background:rgba(242,216,216,.38)}
    .dot{width:9px;height:9px;border-radius:999px;background:rgba(91,63,122,.22)}.dot.active{width:28px;background:var(--violet)}
    .requirements{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
    .req-card{border-radius:var(--radius);background:#fff;border:1px solid var(--line);padding:24px;box-shadow:0 12px 34px rgba(43,32,56,.06)}
    .req-card h3{margin:0 0 16px;color:var(--ink);font-size:21px;font-weight:850}
    .req-list{display:grid;gap:10px}
    .req-list li{list-style:none;display:flex;justify-content:space-between;gap:18px;padding:12px 0;border-top:1px solid rgba(58,42,77,.08);font-size:14px;color:var(--muted)}
    .req-list li strong{color:var(--text);font-weight:760;text-align:right}
    .download-panel{
      border-radius:34px;background:linear-gradient(135deg,var(--plum),#4B3763 62%,#6C506F);
      color:#fff;padding:34px;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center;box-shadow:var(--shadowLift);position:relative;overflow:hidden
    }
    .download-panel:after{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(242,216,216,.13);right:-90px;top:-110px}
    .download-panel h2{margin:0;font-size:clamp(27px,3vw,38px);font-weight:850;line-height:1.25;position:relative}
    .download-panel p{margin:12px 0 0;color:rgba(255,255,255,.78);position:relative;max-width:720px}
    .download-actions{display:flex;gap:12px;flex-wrap:wrap;position:relative;justify-content:flex-end}
    .download-actions .btn-secondary{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.28);box-shadow:none}
    .download-actions .btn-secondary:hover{background:rgba(255,255,255,.18)}
    .notice-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;position:relative}
    .notice-row span{display:inline-flex;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.16);font-size:13px;color:rgba(255,255,255,.86)}
    .reviews{columns:3 280px;column-gap:18px}
    .review-card{break-inside:avoid;margin:0 0 18px;border-radius:24px;background:#fff;border:1px solid var(--line);padding:20px;box-shadow:0 12px 30px rgba(43,32,56,.06)}
    .review-head{display:flex;align-items:center;gap:12px;margin-bottom:10px}
    .avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--rose),var(--violet));display:grid;place-items:center;color:#fff;font-weight:850}
    .review-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.78}
    .review-head b{color:var(--ink)}.review-head small{display:block;color:var(--muted)}
    .faq-wrap{display:grid;grid-template-columns:.72fr 1.28fr;gap:28px;align-items:start}
    .faq-intro{position:sticky;top:96px}
    .faq-intro h2{font-size:clamp(28px,3.2vw,40px);line-height:1.25;margin:0 0 12px;color:var(--ink);font-weight:850}
    .faq-intro p{color:var(--muted);margin:0}
    .faq-list{display:grid;gap:12px}
    details{border:1px solid var(--line);border-radius:22px;background:#fff;box-shadow:0 10px 28px rgba(43,32,56,.05);overflow:hidden}
    summary{list-style:none;min-height:58px;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--ink);font-weight:800;cursor:pointer}
    summary::-webkit-details-marker{display:none}
    summary:after{content:"+";width:28px;height:28px;border-radius:50%;background:rgba(91,63,122,.08);display:grid;place-items:center;flex:0 0 auto;color:var(--violet)}
    details[open] summary:after{content:"−";background:rgba(217,133,59,.14);color:#8a4b1e}
    details p{margin:0;padding:0 22px 20px;color:var(--muted);font-size:15.5px;line-height:1.85}
    .final-cta{border-radius:36px;background:linear-gradient(145deg,#fff,rgba(242,216,216,.45));border:1px solid var(--line);padding:46px;text-align:center;box-shadow:var(--shadow)}
    .final-cta h2{margin:0;color:var(--ink);font-size:clamp(28px,3.6vw,42px);font-weight:850;line-height:1.22}
    .final-cta p{margin:14px auto 0;color:var(--muted);max-width:720px}
    .final-cta .hero-actions{justify-content:center}
    .site-footer{background:var(--ink);color:#F8F2EF;padding:56px 0 24px}
    .footer-grid{display:grid;grid-template-columns:1.35fr repeat(3,.7fr);gap:28px}
    .footer-brand{font-size:20px;font-weight:850;margin-bottom:12px}
    .footer-text{color:rgba(248,242,239,.70);max-width:430px;font-size:14px}
    .footer-col h3{font-size:15px;margin:0 0 12px;color:#fff}
    .footer-col a{display:block;color:rgba(248,242,239,.70);font-size:14px;padding:5px 0;transition:.2s ease}
    .footer-col a:hover{color:#fff;transform:translateX(2px)}
    .footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:34px;padding-top:18px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:rgba(248,242,239,.62);font-size:13px}
    @media (max-width:1024px){
      .desktop-nav,.nav-actions{display:none}.menu-toggle{display:flex}
      .hero-grid,.value-layout,.faq-wrap{grid-template-columns:1fr}
      .trust-grid{grid-template-columns:repeat(3,1fr)}
      .requirements{grid-template-columns:1fr}
      .download-panel{grid-template-columns:1fr}.download-actions{justify-content:flex-start}
      .faq-intro{position:static}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .section{padding:66px 0}.section-sm{padding:52px 0}.hero{padding:52px 0}
      .site-container{width:min(100% - 32px,var(--container))}
      .brand-text{max-width:230px;font-size:16px}
      .meta-strip,.feature-grid{grid-template-columns:1fr 1fr}
      .trust-grid{grid-template-columns:1fr 1fr}
      .carousel-track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:8px}
      .shot-card{min-width:84%;scroll-snap-align:center}
      .download-panel,.final-cta{padding:28px}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .hero-actions,.download-actions{flex-direction:column}.btn{width:100%}
      .meta-strip,.feature-grid,.mini-stats,.trust-grid{grid-template-columns:1fr}
      h1{letter-spacing:-.6px}
      .mock-window{min-height:470px}
      .section-title{display:block}
      .shot-card{min-width:92%}
      .footer-bottom{display:block}
    }

/* roulang page: category1 */
:root{
      --color-ink:#2B2038;
      --color-plum:#3A2A4D;
      --color-orchid:#5B3F7A;
      --color-rose:#B77A8B;
      --color-blush:#F2D8D8;
      --color-paper:#FAF7F4;
      --color-mist:#F7F2EF;
      --color-amber:#D9823B;
      --color-text:#342B3F;
      --color-muted:#716779;
      --color-line:rgba(58,42,77,.13);
      --shadow-soft:0 18px 60px rgba(43,32,56,.10);
      --shadow-lift:0 22px 70px rgba(43,32,56,.16);
      --radius-lg:28px;
      --radius-md:20px;
      --radius-sm:14px;
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,system-ui,sans-serif;
      color:var(--color-text);
      background:
        radial-gradient(circle at 8% 0%, rgba(242,216,216,.72), transparent 32%),
        radial-gradient(circle at 88% 8%, rgba(91,63,122,.13), transparent 34%),
        linear-gradient(180deg,#FAF7F4 0%,#fff 45%,#F7F2EF 100%);
      line-height:1.78;
      text-rendering:optimizeLegibility;
      -webkit-font-smoothing:antialiased;
    }
    a{color:inherit;text-decoration:none}
    img,svg{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(183,122,139,.28);color:var(--color-ink)}
    :focus-visible{outline:3px solid rgba(217,130,59,.35);outline-offset:3px;border-radius:12px}
    .site-container{width:min(var(--container),calc(100% - 40px));margin-inline:auto}
    .site-header{
      position:sticky;top:0;z-index:50;
      background:rgba(250,247,244,.86);
      backdrop-filter:saturate(150%) blur(18px);
      border-bottom:1px solid var(--color-line);
    }
    .nav-wrap{height:72px;display:flex;align-items:center;justify-content:space-between;gap:22px}
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand-mark{
      width:42px;height:42px;border-radius:16px;
      display:grid;place-items:center;
      color:#fff;font-weight:800;letter-spacing:-.04em;
      background:linear-gradient(135deg,var(--color-ink),var(--color-orchid));
      box-shadow:0 12px 28px rgba(43,32,56,.18);
      flex:0 0 auto;
    }
    .brand-text{font-weight:800;color:var(--color-ink);letter-spacing:-.02em;white-space:nowrap}
    .age-chip{
      display:inline-flex;align-items:center;justify-content:center;
      margin-left:6px;padding:2px 8px;border-radius:999px;
      font-size:12px;line-height:1.4;color:var(--color-amber);
      background:rgba(217,130,59,.12);border:1px solid rgba(217,130,59,.24);
      vertical-align:middle;
    }
    .desktop-nav{display:flex;align-items:center;gap:6px;padding:6px;background:rgba(255,255,255,.58);border:1px solid var(--color-line);border-radius:999px}
    .nav-link{
      position:relative;display:inline-flex;align-items:center;justify-content:center;
      min-height:40px;padding:0 16px;border-radius:999px;
      color:var(--color-muted);font-size:15px;font-weight:650;
      transition:background .22s ease,color .22s ease,transform .22s ease;
    }
    .nav-link:hover{color:var(--color-ink);background:rgba(91,63,122,.08)}
    .nav-link.active{color:var(--color-ink);background:#fff;box-shadow:0 8px 22px rgba(43,32,56,.08)}
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      min-height:44px;padding:0 18px;border-radius:999px;border:1px solid transparent;
      font-size:15px;font-weight:750;line-height:1;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,color .22s ease;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{background:linear-gradient(135deg,var(--color-amber),#C76F31);color:#fff;box-shadow:0 14px 28px rgba(217,130,59,.24)}
    .btn-primary:hover{box-shadow:0 18px 34px rgba(217,130,59,.32);background:linear-gradient(135deg,#E08E47,#B9632B)}
    .btn-ghost{background:rgba(255,255,255,.72);border-color:var(--color-line);color:var(--color-ink)}
    .btn-ghost:hover{background:#fff;border-color:rgba(91,63,122,.24);box-shadow:0 12px 28px rgba(43,32,56,.08)}
    .btn-soft{background:rgba(91,63,122,.09);color:var(--color-plum);border-color:rgba(91,63,122,.12)}
    .btn-soft:hover{background:rgba(91,63,122,.14)}
    .menu-toggle{
      display:none;width:44px;height:44px;border:1px solid var(--color-line);border-radius:16px;
      background:#fff;color:var(--color-ink);align-items:center;justify-content:center;
      transition:background .22s ease,transform .22s ease;
    }
    .menu-toggle:hover{background:var(--color-mist);transform:translateY(-1px)}
    .mobile-panel{
      display:none;overflow:hidden;max-height:0;transition:max-height .28s ease;
      border-top:1px solid transparent;
    }
    .mobile-panel.open{max-height:340px;border-top-color:var(--color-line)}
    .mobile-panel nav{padding:14px 0 20px;display:grid;gap:8px}
    .mobile-panel .nav-link{justify-content:flex-start;border-radius:16px;background:rgba(255,255,255,.55)}
    main{overflow:hidden}
    .section{padding:92px 0}
    .section-tight{padding:70px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 12px;border:1px solid rgba(183,122,139,.24);border-radius:999px;
      background:rgba(242,216,216,.38);color:var(--color-plum);
      font-size:13px;font-weight:750;line-height:1.3;
    }
    .badge{
      display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;
      background:rgba(91,63,122,.08);color:var(--color-plum);
      border:1px solid rgba(91,63,122,.12);font-size:13px;font-weight:750;
    }
    .badge.hot{background:rgba(217,130,59,.13);color:#A95622;border-color:rgba(217,130,59,.22)}
    .page-hero{position:relative;padding:76px 0 86px}
    .page-hero:before{
      content:"";position:absolute;inset:0;pointer-events:none;
      background:
        radial-gradient(circle at 78% 28%, rgba(183,122,139,.20), transparent 28%),
        radial-gradient(circle at 20% 48%, rgba(91,63,122,.10), transparent 32%);
    }
    .breadcrumb{
      display:flex;align-items:center;gap:8px;flex-wrap:wrap;
      color:var(--color-muted);font-size:14px;margin-bottom:22px;
    }
    .breadcrumb a:hover{color:var(--color-ink)}
    .hero-grid{position:relative;display:grid;grid-template-columns:minmax(0,1.05fr) minmax(340px,.95fr);gap:46px;align-items:center}
    h1{
      margin:0;color:var(--color-ink);
      font-size:clamp(2.35rem,5vw,4rem);
      line-height:1.14;letter-spacing:-.055em;font-weight:850;
    }
    .hero-lead{margin:22px 0 0;color:var(--color-muted);font-size:18px;line-height:1.86;max-width:720px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
    .quick-meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
    .version-preview{
      position:relative;border-radius:34px;padding:18px;
      background:linear-gradient(145deg,rgba(255,255,255,.92),rgba(247,242,239,.76));
      border:1px solid rgba(58,42,77,.12);
      box-shadow:var(--shadow-soft);
    }
    .version-preview:after{
      content:"";position:absolute;right:-28px;bottom:-28px;width:160px;height:160px;border-radius:50%;
      background:radial-gradient(circle,rgba(217,130,59,.18),transparent 68%);z-index:-1;
    }
    .preview-window{
      border-radius:26px;overflow:hidden;background:#fff;border:1px solid var(--color-line);
      box-shadow:inset 0 1px 0 rgba(255,255,255,.8);
    }
    .window-top{height:48px;display:flex;align-items:center;justify-content:space-between;padding:0 18px;background:linear-gradient(90deg,#fff,#F7F2EF);border-bottom:1px solid var(--color-line)}
    .dots{display:flex;gap:7px}
    .dot{width:10px;height:10px;border-radius:50%;background:rgba(91,63,122,.22)}
    .window-title{font-size:13px;color:var(--color-muted);font-weight:700}
    .preview-body{padding:22px;display:grid;gap:14px}
    .download-bar{
      border-radius:20px;padding:18px;background:linear-gradient(135deg,rgba(43,32,56,.96),rgba(91,63,122,.92));color:#fff;
    }
    .download-bar .line{height:8px;border-radius:999px;background:rgba(255,255,255,.18);overflow:hidden;margin-top:14px}
    .download-bar .line span{display:block;height:100%;width:76%;border-radius:999px;background:linear-gradient(90deg,#F2D8D8,#D9823B)}
    .mini-row{display:grid;grid-template-columns:1fr auto;gap:12px;align-items:center;border:1px solid var(--color-line);border-radius:18px;padding:14px;background:rgba(250,247,244,.72)}
    .mini-row strong{color:var(--color-ink)}
    .mini-row small{display:block;color:var(--color-muted);margin-top:2px}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:34px}
    .section-title{margin:0;color:var(--color-ink);font-size:clamp(1.8rem,3vw,2.65rem);line-height:1.22;letter-spacing:-.04em;font-weight:840}
    .section-desc{margin:12px 0 0;color:var(--color-muted);font-size:16px;max-width:680px}
    .card{
      background:rgba(255,255,255,.82);border:1px solid var(--color-line);
      border-radius:var(--radius-lg);box-shadow:0 10px 36px rgba(43,32,56,.06);
      transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
    }
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-soft);border-color:rgba(91,63,122,.22)}
    .version-list{display:grid;gap:18px}
    .version-card{
      display:grid;grid-template-columns:190px 1fr auto;gap:26px;align-items:center;
      padding:24px;
    }
    .version-no{font-size:30px;line-height:1;color:var(--color-ink);font-weight:850;letter-spacing:-.04em}
    .version-date{margin-top:8px;color:var(--color-muted);font-size:14px}
    .version-card h3{margin:0;color:var(--color-ink);font-size:21px;font-weight:820}
    .version-card p{margin:8px 0 0;color:var(--color-muted);line-height:1.75}
    .spec-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
    .timeline{position:relative;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step-card{position:relative;padding:24px;min-height:230px}
    .step-num{
      width:42px;height:42px;border-radius:16px;display:grid;place-items:center;
      background:linear-gradient(135deg,var(--color-plum),var(--color-orchid));
      color:#fff;font-weight:850;margin-bottom:18px;box-shadow:0 12px 24px rgba(43,32,56,.14);
    }
    .step-card h3{margin:0;color:var(--color-ink);font-size:20px;font-weight:820}
    .step-card p{margin:10px 0 0;color:var(--color-muted)}
    .requirements-wrap{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
    .req-card{padding:24px}
    .req-card h3{margin:0 0 16px;color:var(--color-ink);font-size:21px;font-weight:830}
    .req-list{display:grid;gap:12px;margin:0;padding:0;list-style:none}
    .req-list li{display:flex;justify-content:space-between;gap:16px;padding-bottom:12px;border-bottom:1px dashed rgba(58,42,77,.14)}
    .req-list li:last-child{padding-bottom:0;border-bottom:0}
    .req-list span:first-child{color:var(--color-muted)}
    .req-list span:last-child{color:var(--color-ink);font-weight:750;text-align:right}
    .verify-grid{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1.1fr);gap:22px;align-items:stretch}
    .verify-panel{padding:28px;background:linear-gradient(135deg,var(--color-ink),var(--color-plum));color:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-soft)}
    .verify-panel h2{margin:0;font-size:30px;line-height:1.25;font-weight:850;letter-spacing:-.035em}
    .verify-panel p{margin:14px 0 0;color:rgba(255,255,255,.76)}
    .hash-box{
      margin-top:22px;padding:16px;border-radius:18px;
      background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.14);
      font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;
      color:#FFE2C7;font-size:13px;word-break:break-all;line-height:1.65;
    }
    .check-list{display:grid;gap:14px}
    .check-item{display:flex;gap:14px;padding:18px;border-radius:22px;background:#fff;border:1px solid var(--color-line)}
    .check-icon{
      width:36px;height:36px;border-radius:14px;display:grid;place-items:center;flex:0 0 auto;
      background:rgba(217,130,59,.12);color:var(--color-amber);font-weight:900;
    }
    .check-item strong{display:block;color:var(--color-ink);margin-bottom:2px}
    .check-item span{color:var(--color-muted);font-size:15px}
    .download-cta{
      position:relative;border-radius:34px;padding:38px;
      background:
        radial-gradient(circle at 88% 24%,rgba(217,130,59,.18),transparent 30%),
        linear-gradient(135deg,#fff,rgba(242,216,216,.42));
      border:1px solid rgba(58,42,77,.12);
      box-shadow:var(--shadow-soft);
      overflow:hidden;
    }
    .download-cta:before{
      content:"";position:absolute;left:-80px;bottom:-90px;width:230px;height:230px;border-radius:50%;
      background:rgba(91,63,122,.08);
    }
    .download-cta-inner{position:relative;display:grid;grid-template-columns:1fr auto;gap:28px;align-items:center}
    .download-cta h2{margin:0;color:var(--color-ink);font-size:clamp(1.75rem,3vw,2.55rem);line-height:1.22;font-weight:850;letter-spacing:-.04em}
    .download-cta p{margin:12px 0 0;color:var(--color-muted);max-width:680px}
    .cta-buttons{display:flex;gap:12px;flex-wrap:wrap;justify-content:flex-end}
    .notice-strip{
      margin-top:20px;display:flex;flex-wrap:wrap;gap:10px;color:var(--color-muted);font-size:14px;
    }
    .faq-list{display:grid;gap:12px}
    details.faq-item{border:1px solid var(--color-line);border-radius:22px;background:rgba(255,255,255,.82);box-shadow:0 8px 24px rgba(43,32,56,.05);overflow:hidden}
    details.faq-item[open]{background:#fff;border-color:rgba(91,63,122,.20)}
    .faq-item summary{
      min-height:62px;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;gap:16px;
      cursor:pointer;color:var(--color-ink);font-weight:800;list-style:none;
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";width:30px;height:30px;border-radius:999px;display:grid;place-items:center;
      background:rgba(91,63,122,.08);color:var(--color-plum);font-size:20px;line-height:1;flex:0 0 auto;
      transition:transform .22s ease,background .22s ease;
    }
    .faq-item[open] summary:after{content:"−";background:rgba(217,130,59,.14);color:var(--color-amber)}
    .faq-body{padding:0 22px 20px;color:var(--color-muted);font-size:15.5px}
    .site-footer{background:linear-gradient(135deg,var(--color-ink),#21182D);color:#fff;padding:58px 0 26px}
    .footer-grid{display:grid;grid-template-columns:1.35fr .7fr .7fr .7fr;gap:34px}
    .footer-brand{font-size:22px;font-weight:850;letter-spacing:-.03em}
    .footer-text{margin:14px 0 0;color:rgba(255,255,255,.70);max-width:440px;font-size:15px}
    .footer-col h3{margin:0 0 14px;color:#fff;font-size:15px;font-weight:850}
    .footer-col a{display:block;color:rgba(255,255,255,.68);font-size:14px;margin:9px 0;transition:color .22s ease,transform .22s ease}
    .footer-col a:hover{color:#fff;transform:translateX(2px)}
    .footer-bottom{margin-top:38px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;color:rgba(255,255,255,.58);font-size:13px}
    @media (max-width:1024px){
      .desktop-nav,.nav-actions{display:none}
      .menu-toggle{display:flex}
      .mobile-panel{display:block}
      .hero-grid,.verify-grid,.download-cta-inner{grid-template-columns:1fr}
      .version-preview{max-width:640px}
      .timeline,.requirements-wrap{grid-template-columns:repeat(2,minmax(0,1fr))}
      .version-card{grid-template-columns:1fr;gap:16px}
      .version-card .btn{width:max-content}
      .cta-buttons{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,var(--container))}
      .nav-wrap{height:66px}
      .brand-text{font-size:15px;white-space:normal;line-height:1.25}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .page-hero{padding:48px 0 62px}
      .section{padding:64px 0}
      .section-tight{padding:54px 0}
      .section-head{display:block}
      .timeline,.requirements-wrap{grid-template-columns:1fr}
      .hero-actions .btn,.cta-buttons .btn{width:100%}
      .version-card{padding:20px;border-radius:24px}
      .download-cta{padding:26px;border-radius:28px}
      .preview-body{padding:16px}
      .footer-grid{grid-template-columns:1fr;gap:26px}
      .footer-bottom{display:grid;gap:8px}
    }
    @media (max-width:520px){
      h1{font-size:2.25rem}
      .hero-lead{font-size:16px}
      .quick-meta{display:grid;grid-template-columns:1fr}
      .badge{width:100%;justify-content:center}
      .req-list li{display:grid;gap:3px}
      .req-list span:last-child{text-align:left}
      .check-item{padding:16px}
    }

/* roulang page: category2 */
:root{
      --color-ink:#2B2038;
      --color-plum:#3A2A4D;
      --color-muted:#776D7E;
      --color-line:rgba(58,42,77,.13);
      --color-bg:#FAF7F4;
      --color-card:#FFFFFF;
      --color-mist:#F7F2EF;
      --color-blush:#F2D8D8;
      --color-rose:#B77A8B;
      --color-amber:#D9823B;
      --radius-card:28px;
      --radius-small:18px;
      --shadow-soft:0 18px 60px rgba(43,32,56,.10);
      --shadow-hover:0 24px 80px rgba(43,32,56,.16);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:PingFang SC,Microsoft YaHei,Noto Sans SC,system-ui,sans-serif;
      color:var(--color-ink);
      background:
        radial-gradient(circle at 10% 0%, rgba(242,216,216,.72), transparent 34%),
        radial-gradient(circle at 92% 10%, rgba(183,122,139,.18), transparent 32%),
        linear-gradient(180deg,#FAF7F4 0%,#FFF 45%,#FAF7F4 100%);
      line-height:1.78;
      -webkit-font-smoothing:antialiased;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none}
    img,svg{display:block;max-width:100%}
    button,input{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(217,130,59,.22)}
    :focus-visible{outline:3px solid rgba(217,130,59,.38);outline-offset:3px;border-radius:12px}
    .site-container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .site-header{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(250,247,244,.88);
      backdrop-filter:blur(18px);
      border-bottom:1px solid var(--color-line);
    }
    .nav-wrap{
      min-height:72px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:24px;
    }
    .brand{
      display:inline-flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:800;
      letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      display:grid;
      place-items:center;
      color:#fff;
      font-weight:900;
      background:linear-gradient(135deg,var(--color-plum),#5B3F7A 62%,var(--color-rose));
      box-shadow:0 12px 28px rgba(58,42,77,.18);
      flex:0 0 auto;
    }
    .brand-text{
      display:inline-flex;
      align-items:center;
      gap:8px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:360px;
    }
    .age-chip,.badge{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      border-radius:999px;
      padding:4px 9px;
      font-size:12px;
      line-height:1;
      font-weight:800;
      color:var(--color-plum);
      background:rgba(242,216,216,.78);
      border:1px solid rgba(183,122,139,.22);
      white-space:nowrap;
    }
    .desktop-nav{
      display:flex;
      align-items:center;
      justify-content:center;
      gap:6px;
      padding:5px;
      border:1px solid rgba(58,42,77,.08);
      border-radius:999px;
      background:rgba(255,255,255,.66);
    }
    .nav-link{
      position:relative;
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:8px 15px;
      border-radius:999px;
      color:#5f5566;
      font-weight:700;
      font-size:14px;
      transition:color .2s ease, background .2s ease, transform .2s ease;
    }
    .nav-link:hover{color:var(--color-ink);background:rgba(242,216,216,.45)}
    .nav-link.active{
      color:var(--color-plum);
      background:#fff;
      box-shadow:0 8px 24px rgba(43,32,56,.08);
    }
    .nav-actions{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:44px;
      padding:12px 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:800;
      line-height:1.15;
      transition:transform .2s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease, color .2s ease;
      white-space:nowrap;
    }
    .btn:hover{transform:translateY(-2px)}
    .btn:active{transform:translateY(0)}
    .btn-primary{
      background:linear-gradient(135deg,var(--color-amber),#C96F32);
      color:#fff;
      box-shadow:0 14px 34px rgba(217,130,59,.26);
    }
    .btn-primary:hover{box-shadow:0 18px 42px rgba(217,130,59,.34);background:linear-gradient(135deg,#E1914F,#BC642D)}
    .btn-ghost{
      color:var(--color-plum);
      background:rgba(255,255,255,.72);
      border-color:rgba(58,42,77,.13);
    }
    .btn-ghost:hover{background:rgba(242,216,216,.52);border-color:rgba(183,122,139,.26)}
    .btn-dark{
      color:#fff;
      background:var(--color-plum);
      box-shadow:0 16px 34px rgba(58,42,77,.20);
    }
    .btn-dark:hover{background:#2B2038;box-shadow:0 20px 46px rgba(43,32,56,.25)}
    .menu-toggle{
      display:none;
      width:44px;
      height:44px;
      border:1px solid var(--color-line);
      border-radius:16px;
      color:var(--color-plum);
      background:#fff;
      align-items:center;
      justify-content:center;
      transition:background .2s ease, transform .2s ease;
    }
    .menu-toggle:hover{background:rgba(242,216,216,.45);transform:translateY(-1px)}
    .mobile-panel{
      display:none;
      padding:0 0 16px;
    }
    .mobile-panel nav{
      display:grid;
      gap:8px;
      padding:14px;
      border-radius:24px;
      background:rgba(255,255,255,.84);
      border:1px solid var(--color-line);
      box-shadow:var(--shadow-soft);
    }
    .section{padding:88px 0}
    .section-tight{padding:64px 0}
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      color:var(--color-plum);
      background:rgba(242,216,216,.55);
      border:1px solid rgba(183,122,139,.22);
      font-size:13px;
      font-weight:800;
      line-height:1.2;
    }
    .hero{
      position:relative;
      overflow:hidden;
      padding:72px 0 56px;
    }
    .hero:before{
      content:"";
      position:absolute;
      inset:24px auto auto -120px;
      width:330px;
      height:330px;
      border-radius:999px;
      background:rgba(183,122,139,.13);
      filter:blur(26px);
      pointer-events:none;
    }
    .breadcrumb{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:8px;
      margin-bottom:24px;
      color:var(--color-muted);
      font-size:14px;
      font-weight:650;
    }
    .breadcrumb a:hover{color:var(--color-plum)}
    .hero-grid{
      display:grid;
      grid-template-columns:minmax(0,1.02fr) minmax(360px,.82fr);
      gap:52px;
      align-items:center;
    }
    h1{
      margin:18px 0 20px;
      max-width:780px;
      font-size:clamp(36px,5vw,60px);
      line-height:1.12;
      letter-spacing:-.045em;
      font-weight:900;
      color:var(--color-ink);
    }
    .lead{
      max-width:740px;
      color:#62596a;
      font-size:18px;
      line-height:1.9;
    }
    .hero-actions{
      display:flex;
      flex-wrap:wrap;
      align-items:center;
      gap:14px;
      margin-top:30px;
    }
    .hero-meta{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:24px;
    }
    .meta-pill{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:9px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.74);
      border:1px solid rgba(58,42,77,.10);
      color:#655b6d;
      font-size:13px;
      font-weight:700;
    }
    .preview-shell{
      position:relative;
      padding:18px;
      border-radius:34px;
      background:linear-gradient(145deg,rgba(255,255,255,.92),rgba(247,242,239,.78));
      border:1px solid rgba(58,42,77,.10);
      box-shadow:var(--shadow-soft);
    }
    .preview-shell:after{
      content:"";
      position:absolute;
      right:-24px;
      bottom:-28px;
      width:138px;
      height:138px;
      border-radius:42px;
      background:linear-gradient(135deg,rgba(217,130,59,.20),rgba(183,122,139,.18));
      z-index:-1;
      transform:rotate(12deg);
    }
    .mock-window{
      overflow:hidden;
      border-radius:24px;
      background:#fff;
      border:1px solid rgba(58,42,77,.12);
    }
    .mock-top{
      display:flex;
      align-items:center;
      justify-content:space-between;
      padding:14px 16px;
      border-bottom:1px solid rgba(58,42,77,.09);
      background:rgba(247,242,239,.72);
    }
    .dot-group{display:flex;gap:7px}
    .dot{width:10px;height:10px;border-radius:99px;background:#D9C8C8}
    .dot:nth-child(2){background:#C6B4C9}.dot:nth-child(3){background:#D9823B}
    .mock-body{padding:18px;display:grid;gap:14px}
    .device-card{
      border-radius:20px;
      border:1px solid rgba(58,42,77,.09);
      background:linear-gradient(135deg,#fff,rgba(242,216,216,.30));
      padding:16px;
      transition:transform .2s ease, box-shadow .2s ease;
    }
    .device-card:hover{transform:translateY(-3px);box-shadow:0 14px 32px rgba(43,32,56,.10)}
    .blur-line{
      height:12px;
      border-radius:99px;
      background:linear-gradient(90deg,rgba(58,42,77,.18),rgba(183,122,139,.12),rgba(217,130,59,.14));
      margin-top:10px;
    }
    .blur-line.short{width:58%}
    .toggle-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-top:14px;
      color:#5d5365;
      font-size:13px;
      font-weight:800;
    }
    .switch{
      width:48px;
      height:26px;
      padding:3px;
      border-radius:999px;
      background:rgba(58,42,77,.13);
    }
    .switch span{
      width:20px;
      height:20px;
      border-radius:999px;
      display:block;
      margin-left:auto;
      background:var(--color-amber);
      box-shadow:0 6px 14px rgba(217,130,59,.28);
    }
    .section-head{
      display:flex;
      align-items:end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:34px;
    }
    .section-title{
      margin:12px 0 0;
      font-size:clamp(28px,3.6vw,42px);
      line-height:1.22;
      letter-spacing:-.03em;
      font-weight:900;
    }
    .section-desc{
      max-width:620px;
      color:#6B6172;
      font-size:16px;
      line-height:1.85;
      margin:10px 0 0;
    }
    .card{
      border-radius:var(--radius-card);
      background:rgba(255,255,255,.82);
      border:1px solid rgba(58,42,77,.10);
      box-shadow:0 12px 34px rgba(43,32,56,.06);
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    }
    .card:hover{
      transform:translateY(-3px);
      box-shadow:var(--shadow-hover);
      border-color:rgba(183,122,139,.26);
    }
    .gallery-grid{
      display:grid;
      grid-template-columns:1.25fr .75fr;
      gap:18px;
    }
    .gallery-side{
      display:grid;
      gap:18px;
    }
    .shot{
      position:relative;
      overflow:hidden;
      min-height:260px;
      padding:22px;
      border-radius:30px;
      background:linear-gradient(145deg,#fff,rgba(247,242,239,.82));
      border:1px solid rgba(58,42,77,.10);
      box-shadow:0 14px 42px rgba(43,32,56,.07);
      transition:transform .25s ease, box-shadow .25s ease;
    }
    .shot.large{min-height:540px}
    .shot:hover{transform:scale(1.012);box-shadow:var(--shadow-hover)}
    .shot:before{
      content:"";
      position:absolute;
      inset:auto -20% -35% auto;
      width:260px;
      height:260px;
      border-radius:999px;
      background:radial-gradient(circle,rgba(183,122,139,.24),transparent 68%);
      pointer-events:none;
    }
    .shot-title{
      position:relative;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:12px;
      margin-bottom:18px;
      font-size:18px;
      font-weight:900;
    }
    .ui-panel{
      position:relative;
      display:grid;
      gap:12px;
      z-index:1;
    }
    .ui-row{
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:13px 14px;
      border-radius:18px;
      background:rgba(255,255,255,.70);
      border:1px solid rgba(58,42,77,.08);
    }
    .ui-row strong{font-size:14px}
    .ui-row span{font-size:12px;color:var(--color-muted);font-weight:700}
    .progress{
      height:10px;
      width:100%;
      border-radius:99px;
      background:rgba(58,42,77,.10);
      overflow:hidden;
    }
    .progress i{
      display:block;
      height:100%;
      width:68%;
      border-radius:99px;
      background:linear-gradient(90deg,var(--color-amber),var(--color-rose));
    }
    .mini-phone{
      width:min(300px,100%);
      margin:20px auto 0;
      padding:12px;
      border-radius:34px;
      background:var(--color-plum);
      box-shadow:0 22px 54px rgba(58,42,77,.18);
    }
    .phone-screen{
      min-height:330px;
      padding:18px;
      border-radius:24px;
      background:linear-gradient(180deg,#fff,#F7F2EF);
      display:grid;
      gap:12px;
      align-content:start;
    }
    .feature-list{
      display:grid;
      gap:26px;
    }
    .feature-item{
      display:grid;
      grid-template-columns:.92fr 1.08fr;
      gap:28px;
      align-items:center;
      padding:26px;
      border-radius:32px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(58,42,77,.10);
      box-shadow:0 12px 36px rgba(43,32,56,.06);
    }
    .feature-item:nth-child(even){grid-template-columns:1.08fr .92fr}
    .feature-item:nth-child(even) .feature-copy{order:2}
    .feature-item h3{
      margin:10px 0 10px;
      font-size:25px;
      line-height:1.25;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .feature-item p{margin:0;color:#675D6E;line-height:1.85}
    .feature-mock{
      overflow:hidden;
      min-height:260px;
      border-radius:26px;
      background:linear-gradient(145deg,rgba(242,216,216,.45),rgba(247,242,239,.85));
      border:1px solid rgba(58,42,77,.09);
      padding:18px;
    }
    .flow{
      display:grid;
      grid-template-columns:repeat(5,1fr);
      gap:14px;
      counter-reset:step;
    }
    .flow-step{
      position:relative;
      min-height:176px;
      padding:22px 18px;
      border-radius:26px;
      background:#fff;
      border:1px solid rgba(58,42,77,.10);
      box-shadow:0 12px 32px rgba(43,32,56,.06);
    }
    .flow-step:before{
      counter-increment:step;
      content:"0" counter(step);
      display:inline-flex;
      align-items:center;
      justify-content:center;
      width:44px;
      height:44px;
      margin-bottom:18px;
      border-radius:16px;
      color:#fff;
      font-weight:900;
      background:linear-gradient(135deg,var(--color-plum),#5B3F7A);
    }
    .flow-step h3{font-size:17px;font-weight:900;margin:0 0 8px}
    .flow-step p{font-size:14px;color:#6B6172;margin:0;line-height:1.7}
    .security-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
      align-items:stretch;
    }
    .security-card{
      padding:28px;
      border-radius:30px;
      background:#fff;
      border:1px solid rgba(58,42,77,.10);
      box-shadow:0 12px 34px rgba(43,32,56,.06);
    }
    .security-card h3{font-size:22px;font-weight:900;margin:0 0 12px}
    .security-card p{color:#665D6D;margin:0;line-height:1.86}
    .check-list{
      display:grid;
      gap:12px;
      margin-top:20px;
      padding:0;
      list-style:none;
    }
    .check-list li{
      display:flex;
      gap:10px;
      align-items:flex-start;
      color:#5f5566;
      font-weight:700;
      line-height:1.65;
    }
    .check-list li:before{
      content:"";
      width:18px;
      height:18px;
      margin-top:4px;
      border-radius:999px;
      background:linear-gradient(135deg,var(--color-amber),var(--color-rose));
      box-shadow:0 6px 14px rgba(217,130,59,.18);
      flex:0 0 auto;
    }
    .requirements-strip{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
    }
    .req-card{
      padding:24px;
      border-radius:26px;
      background:rgba(255,255,255,.78);
      border:1px solid rgba(58,42,77,.10);
    }
    .req-card h3{font-size:19px;font-weight:900;margin:0 0 12px}
    .req-card p{margin:0;color:#6A6070;font-size:15px;line-height:1.8}
    .download-box{
      position:relative;
      overflow:hidden;
      display:grid;
      grid-template-columns:1fr auto;
      align-items:center;
      gap:28px;
      padding:34px;
      border-radius:34px;
      color:#fff;
      background:
        radial-gradient(circle at 86% 10%,rgba(217,130,59,.30),transparent 28%),
        linear-gradient(135deg,#2B2038,#3A2A4D 56%,#5B3F7A);
      box-shadow:0 24px 80px rgba(43,32,56,.20);
    }
    .download-box h2{margin:0 0 10px;font-size:clamp(26px,3.2vw,38px);font-weight:900;letter-spacing:-.03em;line-height:1.22}
    .download-box p{margin:0;color:rgba(255,255,255,.78);line-height:1.85}
    .download-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:flex-end}
    .download-actions .btn-ghost{background:rgba(255,255,255,.10);color:#fff;border-color:rgba(255,255,255,.25)}
    .download-actions .btn-ghost:hover{background:rgba(255,255,255,.18)}
    .faq-list{
      display:grid;
      gap:14px;
      max-width:900px;
      margin:0 auto;
    }
    details.faq-item{
      border-radius:22px;
      background:#fff;
      border:1px solid rgba(58,42,77,.10);
      box-shadow:0 10px 28px rgba(43,32,56,.05);
      overflow:hidden;
      transition:box-shadow .2s ease,border-color .2s ease;
    }
    details.faq-item[open]{box-shadow:0 18px 50px rgba(43,32,56,.09);border-color:rgba(183,122,139,.24)}
    .faq-item summary{
      min-height:58px;
      padding:18px 22px;
      list-style:none;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
      cursor:pointer;
      font-weight:900;
      color:var(--color-ink);
    }
    .faq-item summary::-webkit-details-marker{display:none}
    .faq-item summary:after{
      content:"+";
      width:30px;
      height:30px;
      display:grid;
      place-items:center;
      flex:0 0 auto;
      border-radius:999px;
      color:var(--color-plum);
      background:rgba(242,216,216,.55);
      font-weight:900;
      transition:transform .2s ease;
    }
    .faq-item[open] summary:after{content:"−";transform:rotate(180deg)}
    .faq-body{
      padding:0 22px 22px;
      color:#675D6E;
      line-height:1.86;
    }
    .site-footer{
      padding:64px 0 28px;
      color:rgba(255,255,255,.82);
      background:
        radial-gradient(circle at 18% 0%,rgba(183,122,139,.22),transparent 32%),
        linear-gradient(135deg,#21182B,#2B2038 55%,#3A2A4D);
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.6fr repeat(3,1fr);
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.12);
    }
    .footer-brand{
      color:#fff;
      font-size:22px;
      font-weight:900;
      margin-bottom:12px;
    }
    .footer-text{
      max-width:430px;
      margin:0;
      color:rgba(255,255,255,.70);
      line-height:1.85;
    }
    .footer-col h3{
      color:#fff;
      margin:0 0 14px;
      font-size:15px;
      font-weight:900;
    }
    .footer-col a{
      display:block;
      color:rgba(255,255,255,.68);
      padding:5px 0;
      transition:color .2s ease, transform .2s ease;
    }
    .footer-col a:hover{color:#fff;transform:translateX(3px)}
    .footer-bottom{
      display:flex;
      justify-content:space-between;
      gap:18px;
      flex-wrap:wrap;
      padding-top:22px;
      color:rgba(255,255,255,.62);
      font-size:14px;
    }
    @media (max-width:1024px){
      .desktop-nav,.nav-actions{display:none}
      .menu-toggle{display:inline-flex}
      .mobile-panel.open{display:block;animation:drop .18s ease-out}
      @keyframes drop{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}
      .hero-grid{grid-template-columns:1fr;gap:34px}
      .gallery-grid{grid-template-columns:1fr}
      .shot.large{min-height:430px}
      .flow{grid-template-columns:repeat(3,1fr)}
      .download-box{grid-template-columns:1fr}
      .download-actions{justify-content:flex-start}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .site-container{width:min(100% - 32px,var(--container))}
      .brand-text{max-width:230px;font-size:14px}
      .section{padding:64px 0}
      .section-tight{padding:48px 0}
      .hero{padding:50px 0 36px}
      .hero-actions .btn{width:100%}
      .section-head{display:block}
      .feature-item,.feature-item:nth-child(even){grid-template-columns:1fr;padding:20px}
      .feature-item:nth-child(even) .feature-copy{order:0}
      .flow{grid-template-columns:1fr 1fr}
      .security-grid,.requirements-strip{grid-template-columns:1fr}
      .download-box{padding:26px}
      .download-actions .btn{width:100%}
      .footer-grid{grid-template-columns:1fr}
    }
    @media (max-width:520px){
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .age-chip{display:none}
      h1{font-size:35px}
      .lead{font-size:16px}
      .preview-shell{padding:12px;border-radius:26px}
      .shot{min-height:230px;padding:18px;border-radius:24px}
      .shot.large{min-height:380px}
      .flow{grid-template-columns:1fr}
      .meta-pill{width:100%;justify-content:center}
      .footer-bottom{display:grid}
    }