/* roulang page: index */
:root{
      --brand:#2f78ff;
      --brand-2:#7c3aed;
      --brand-3:#05c7b8;
      --ink:#0e1726;
      --muted:#637083;
      --soft:#f6f8fc;
      --panel:#ffffff;
      --line:#dfe7f2;
      --line-strong:#c7d4e5;
      --dark:#08111f;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow-sm:0 10px 30px rgba(15, 23, 42, .07);
      --shadow:0 24px 70px rgba(15, 23, 42, .12);
      --shadow-brand:0 24px 70px rgba(47, 120, 255, .22);
      --container:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      color:var(--ink);
      background:
        radial-gradient(circle at 16% 0%, rgba(47,120,255,.14), transparent 32%),
        radial-gradient(circle at 88% 7%, rgba(124,58,237,.12), transparent 34%),
        linear-gradient(180deg,#f9fbff 0%,#ffffff 42%,#f7f9fe 100%);
      font-family:Inter,"PingFang SC","Microsoft YaHei",Arial,sans-serif;
      line-height:1.65;
      overflow-x:hidden;
      padding-bottom:84px;
    }
    a{color:inherit;text-decoration:none}
    img{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(47,120,255,.18);color:#0a1d3c}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin:0 auto;
    }
    .skip-link{
      position:absolute;
      left:-999px;
      top:12px;
      padding:10px 14px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:12px;
      z-index:1000;
    }
    .skip-link:focus{left:16px;outline:3px solid rgba(47,120,255,.28)}
    .site-header{
      position:sticky;
      top:0;
      z-index:60;
      backdrop-filter:blur(18px);
      background:rgba(250,252,255,.78);
      border-bottom:1px solid rgba(223,231,242,.76);
      box-shadow:0 10px 30px rgba(15,23,42,.04);
    }
    .toolbar{
      min-height:74px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
    }
    .brand-logo{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:max-content;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:15px;
      background:linear-gradient(135deg,var(--brand),var(--brand-2) 58%,var(--brand-3));
      box-shadow:0 16px 30px rgba(47,120,255,.25);
      display:grid;
      place-items:center;
      color:#fff;
      position:relative;
      overflow:hidden;
    }
    .brand-mark:after{
      content:"";
      width:22px;
      height:22px;
      border-radius:999px;
      border:4px solid rgba(255,255,255,.82);
      border-left-color:transparent;
      transform:rotate(-20deg);
    }
    .brand-text{
      display:flex;
      flex-direction:column;
      line-height:1.1;
    }
    .brand-text strong{font-size:16px}
    .brand-text span{font-size:12px;color:var(--muted);font-weight:700;margin-top:4px}
    .nav-shell{
      flex:1;
      display:flex;
      align-items:center;
      justify-content:center;
      gap:12px;
      min-width:0;
    }
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
      padding:7px;
      border:1px solid rgba(223,231,242,.82);
      background:rgba(255,255,255,.72);
      border-radius:999px;
      box-shadow:0 10px 26px rgba(15,23,42,.04);
    }
    .nav-link{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:38px;
      padding:0 16px;
      border-radius:999px;
      color:#334155;
      font-size:14px;
      font-weight:800;
      transition:.22s ease;
    }
    .nav-link:hover{
      color:var(--brand-700);
      background:rgba(47,120,255,.08);
    }
    .nav-link.active{
      color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:0 12px 26px rgba(47,120,255,.25);
    }
    .header-search{
      width:min(300px, 24vw);
      display:flex;
      align-items:center;
      gap:8px;
      background:#fff;
      border:1px solid var(--line);
      border-radius:999px;
      padding:8px 12px;
      box-shadow:0 10px 24px rgba(15,23,42,.04);
    }
    .header-search input{
      width:100%;
      border:0;
      outline:0;
      background:transparent;
      color:var(--ink);
      font-size:13px;
    }
    .header-actions{
      display:flex;
      align-items:center;
      justify-content:flex-end;
      gap:10px;
      min-width:max-content;
    }
    .status-pill{
      display:inline-flex;
      align-items:center;
      gap:8px;
      height:40px;
      padding:0 13px;
      border-radius:999px;
      background:#fff;
      border:1px solid var(--line);
      color:#334155;
      font-size:13px;
      font-weight:800;
      box-shadow:0 10px 24px rgba(15,23,42,.04);
    }
    .status-dot{
      width:9px;
      height:9px;
      border-radius:999px;
      background:#16a34a;
      box-shadow:0 0 0 6px rgba(22,163,74,.12);
    }
    .icon-btn{
      width:40px;
      height:40px;
      border:1px solid var(--line);
      background:#fff;
      color:#334155;
      border-radius:14px;
      display:grid;
      place-items:center;
      transition:.22s ease;
      box-shadow:0 10px 24px rgba(15,23,42,.04);
    }
    .icon-btn:hover,.icon-btn:focus{
      transform:translateY(-1px);
      border-color:rgba(47,120,255,.35);
      color:var(--brand-700);
      outline:none;
    }
    .menu-toggle{display:none}
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 18px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:900;
      letter-spacing:.01em;
      transition:.24s ease;
      white-space:nowrap;
    }
    .btn-primary{
      color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--brand-2));
      box-shadow:var(--shadow-brand);
    }
    .btn-primary:hover{transform:translateY(-2px);filter:saturate(1.08)}
    .btn-secondary{
      color:#12345f;
      background:#fff;
      border-color:var(--line);
      box-shadow:var(--shadow-sm);
    }
    .btn-secondary:hover{
      transform:translateY(-2px);
      border-color:rgba(47,120,255,.36);
      color:var(--brand-700);
    }
    .btn-ghost{
      color:#dbeafe;
      background:rgba(255,255,255,.10);
      border-color:rgba(255,255,255,.18);
    }
    .btn-ghost:hover{background:rgba(255,255,255,.16)}
    .btn:focus,.search-box input:focus,.form-control:focus{
      outline:3px solid rgba(47,120,255,.22);
      outline-offset:2px;
    }
    .section{
      padding:86px 0;
      position:relative;
    }
    .section-tight{padding:58px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:24px;
      margin-bottom:28px;
    }
    .section-kicker{
      display:inline-flex;
      align-items:center;
      gap:8px;
      font-size:13px;
      font-weight:900;
      color:var(--brand-700);
      background:rgba(47,120,255,.08);
      border:1px solid rgba(47,120,255,.14);
      border-radius:999px;
      padding:7px 12px;
      margin-bottom:12px;
    }
    .section-title{
      margin:0;
      font-size:clamp(26px,3.5vw,42px);
      line-height:1.18;
      letter-spacing:-.04em;
      color:#0f172a;
      font-weight:950;
    }
    .section-desc{
      margin:12px 0 0;
      color:var(--muted);
      max-width:720px;
      font-size:16px;
    }
    .hero{
      padding:52px 0 72px;
    }
    .hero-card{
      overflow:hidden;
      border-radius:36px;
      background:
        linear-gradient(135deg,rgba(9,21,44,.94),rgba(18,45,95,.92) 44%,rgba(84,41,158,.88)),
        radial-gradient(circle at 50% 0%,rgba(5,199,184,.34),transparent 40%);
      box-shadow:0 34px 110px rgba(15,23,42,.25);
      border:1px solid rgba(255,255,255,.12);
      position:relative;
      min-height:560px;
    }
    .hero-card:before{
      content:"";
      position:absolute;
      inset:-1px;
      background:
        radial-gradient(circle at 16% 28%,rgba(47,120,255,.42),transparent 25%),
        radial-gradient(circle at 86% 18%,rgba(5,199,184,.32),transparent 28%),
        linear-gradient(90deg,transparent,rgba(255,255,255,.10),transparent);
      pointer-events:none;
    }
    .hero-grid{
      position:relative;
      z-index:1;
      padding:56px 42px 42px;
      display:grid;
      grid-template-columns:1fr;
      justify-items:center;
      text-align:center;
      gap:24px;
    }
    .hero-badge{
      display:inline-flex;
      align-items:center;
      gap:10px;
      padding:9px 14px;
      border-radius:999px;
      color:#e0f2fe;
      background:rgba(255,255,255,.11);
      border:1px solid rgba(255,255,255,.18);
      font-weight:900;
      font-size:13px;
    }
    .hero-badge em{
      font-style:normal;
      color:#fff;
      background:linear-gradient(135deg,#22d3ee,#a78bfa);
      padding:2px 9px;
      border-radius:999px;
    }
    .hero h1{
      margin:0;
      max-width:940px;
      color:#fff;
      font-size:clamp(34px,6vw,68px);
      line-height:1.04;
      letter-spacing:-.06em;
      font-weight:1000;
    }
    .hero-lead{
      margin:0;
      max-width:780px;
      color:#dbeafe;
      font-size:clamp(16px,2vw,20px);
      line-height:1.8;
    }
    .hero-search-panel{
      width:min(850px,100%);
      margin-top:8px;
      padding:10px;
      border-radius:26px;
      background:rgba(255,255,255,.16);
      border:1px solid rgba(255,255,255,.18);
      backdrop-filter:blur(16px);
      box-shadow:0 24px 60px rgba(0,0,0,.18);
    }
    .search-box{
      min-height:66px;
      display:flex;
      align-items:center;
      gap:12px;
      background:#fff;
      border-radius:20px;
      padding:8px 9px 8px 18px;
    }
    .search-icon{
      width:42px;
      height:42px;
      display:grid;
      place-items:center;
      border-radius:15px;
      background:rgba(47,120,255,.09);
      color:var(--brand);
      flex:0 0 auto;
    }
    .search-box input{
      flex:1;
      min-width:0;
      border:0;
      outline:0;
      color:var(--ink);
      font-size:16px;
    }
    .hero-quick{
      display:flex;
      flex-wrap:wrap;
      justify-content:center;
      gap:10px;
      margin-top:6px;
    }
    .quick-chip{
      display:inline-flex;
      align-items:center;
      gap:8px;
      min-height:38px;
      padding:0 13px;
      border-radius:999px;
      color:#e8f1ff;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.16);
      font-size:13px;
      font-weight:800;
      transition:.22s ease;
    }
    .quick-chip:hover{
      transform:translateY(-2px);
      background:rgba(255,255,255,.16);
    }
    .hero-metrics{
      width:min(920px,100%);
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:14px;
      margin-top:6px;
    }
    .metric-card{
      border-radius:22px;
      padding:18px;
      text-align:left;
      color:#fff;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.16);
      backdrop-filter:blur(12px);
    }
    .metric-card strong{
      display:block;
      font-size:26px;
      line-height:1;
      letter-spacing:-.04em;
      margin-bottom:8px;
    }
    .metric-card span{
      color:#dbeafe;
      font-size:13px;
      font-weight:700;
    }
    .promo-ribbon{
      position:absolute;
      top:30px;
      right:-58px;
      z-index:2;
      width:240px;
      text-align:center;
      transform:rotate(35deg);
      background:linear-gradient(135deg,#f59e0b,#ef4444);
      color:#fff;
      padding:10px 0;
      font-weight:1000;
      box-shadow:0 16px 40px rgba(239,68,68,.22);
      letter-spacing:.08em;
      font-size:13px;
    }
    .card{
      border:1px solid var(--line);
      background:rgba(255,255,255,.86);
      border-radius:var(--radius);
      box-shadow:var(--shadow-sm);
      transition:.24s ease;
    }
    .card:hover{
      transform:translateY(-4px);
      box-shadow:var(--shadow);
      border-color:rgba(47,120,255,.22);
    }
    .latest-layout{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:22px;
      align-items:stretch;
    }
    .promo-panel{
      padding:28px;
      border-radius:30px;
      color:#fff;
      background:
        linear-gradient(135deg,#1156d8,#7c3aed 62%,#0f766e);
      overflow:hidden;
      position:relative;
      min-height:320px;
      box-shadow:var(--shadow-brand);
    }
    .promo-panel:after{
      content:"";
      position:absolute;
      width:260px;
      height:260px;
      right:-80px;
      bottom:-90px;
      border-radius:50%;
      background:rgba(255,255,255,.14);
    }
    .promo-tag{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:8px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.15);
      border:1px solid rgba(255,255,255,.18);
      color:#fff;
      font-weight:900;
      font-size:13px;
    }
    .promo-panel h2{
      margin:22px 0 12px;
      font-size:clamp(28px,4vw,46px);
      line-height:1.12;
      letter-spacing:-.05em;
      font-weight:1000;
      max-width:590px;
    }
    .promo-panel p{
      margin:0;
      color:#e0f2fe;
      max-width:600px;
      font-size:16px;
    }
    .promo-actions{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      margin-top:24px;
      position:relative;
      z-index:1;
    }
    .update-list{
      display:grid;
      gap:12px;
    }
    .update-item{
      padding:20px;
      display:grid;
      grid-template-columns:auto 1fr;
      gap:14px;
      align-items:start;
    }
    .date-badge{
      width:64px;
      border-radius:18px;
      text-align:center;
      background:linear-gradient(180deg,#eef7ff,#fff);
      border:1px solid var(--line);
      color:var(--brand-700);
      padding:10px 6px;
      font-weight:950;
      line-height:1.1;
    }
    .date-badge span{
      display:block;
      color:#64748b;
      font-size:12px;
      font-weight:800;
      margin-top:4px;
    }
    .update-item h3{
      margin:0 0 6px;
      font-size:17px;
      font-weight:950;
      color:#0f172a;
    }
    .update-item p{
      margin:0;
      color:var(--muted);
      font-size:14px;
      line-height:1.65;
    }
    .triple-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:18px;
      margin-top:24px;
    }
    .feature-card{
      padding:22px;
      min-height:190px;
      position:relative;
      overflow:hidden;
    }
    .feature-icon{
      width:48px;
      height:48px;
      display:grid;
      place-items:center;
      border-radius:18px;
      background:linear-gradient(135deg,rgba(47,120,255,.12),rgba(124,58,237,.12));
      color:var(--brand-700);
      margin-bottom:16px;
      font-weight:1000;
    }
    .feature-card h3{
      margin:0 0 8px;
      font-size:19px;
      font-weight:950;
      letter-spacing:-.02em;
    }
    .feature-card p{
      margin:0;
      color:var(--muted);
      font-size:14px;
    }
    .answers-wrap{
      display:grid;
      grid-template-columns:.78fr 1.22fr;
      gap:22px;
      align-items:start;
    }
    .answer-side{
      padding:28px;
      border-radius:30px;
      background:#0d1728;
      color:#fff;
      position:sticky;
      top:96px;
      overflow:hidden;
    }
    .answer-side:after{
      content:"";
      position:absolute;
      inset:auto -70px -80px auto;
      width:220px;
      height:220px;
      border-radius:50%;
      background:rgba(47,120,255,.34);
      filter:blur(4px);
    }
    .answer-side h2{
      margin:0 0 12px;
      font-size:32px;
      line-height:1.14;
      letter-spacing:-.04em;
      font-weight:1000;
    }
    .answer-side p{margin:0;color:#cbd5e1}
    .answer-tags{
      margin-top:22px;
      display:flex;
      flex-wrap:wrap;
      gap:8px;
      position:relative;
      z-index:1;
    }
    .answer-tags span{
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.10);
      border:1px solid rgba(255,255,255,.14);
      color:#e0f2fe;
      font-size:12px;
      font-weight:800;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border:1px solid var(--line);
      border-radius:20px;
      background:#fff;
      overflow:hidden;
      box-shadow:0 12px 34px rgba(15,23,42,.05);
    }
    .faq-question{
      width:100%;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
      padding:19px 20px;
      border:0;
      background:#fff;
      color:#0f172a;
      font-weight:950;
      text-align:left;
      transition:.22s ease;
    }
    .faq-question:hover{background:#f8fbff;color:var(--brand-700)}
    .faq-question .plus{
      width:30px;
      height:30px;
      flex:0 0 auto;
      border-radius:10px;
      display:grid;
      place-items:center;
      color:var(--brand-700);
      background:rgba(47,120,255,.09);
      transition:.22s ease;
    }
    .faq-item.open .plus{transform:rotate(45deg);background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#fff}
    .faq-answer{
      max-height:0;
      overflow:hidden;
      transition:max-height .28s ease;
    }
    .faq-answer p{
      margin:0;
      padding:0 20px 20px;
      color:var(--muted);
      font-size:15px;
    }
    .content-board{
      display:grid;
      grid-template-columns:1.4fr .8fr;
      gap:22px;
      align-items:start;
    }
    .news-list{
      padding:10px;
      border-radius:28px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .news-link{
      display:grid;
      grid-template-columns:auto 1fr auto;
      gap:14px;
      align-items:center;
      padding:17px 16px;
      border-radius:18px;
      transition:.22s ease;
    }
    .news-link + .news-link{border-top:1px solid #eef2f7}
    .news-link:hover{
      background:#f7fbff;
      transform:translateX(3px);
    }
    .news-index{
      width:34px;
      height:34px;
      border-radius:12px;
      display:grid;
      place-items:center;
      background:rgba(47,120,255,.09);
      color:var(--brand-700);
      font-weight:950;
      font-size:13px;
    }
    .news-link h3{
      margin:0 0 3px;
      color:#0f172a;
      font-size:16px;
      font-weight:950;
    }
    .news-link p{
      margin:0;
      color:var(--muted);
      font-size:13px;
    }
    .news-arrow{
      color:#94a3b8;
      font-weight:1000;
    }
    .recommend-box{
      display:grid;
      gap:16px;
    }
    .gradient-card{
      padding:24px;
      border-radius:28px;
      color:#fff;
      background:linear-gradient(135deg,#0f172a,#1d4ed8 55%,#7c3aed);
      box-shadow:var(--shadow);
      position:relative;
      overflow:hidden;
    }
    .gradient-card:before{
      content:"";
      position:absolute;
      width:190px;
      height:190px;
      border-radius:50%;
      right:-65px;
      top:-65px;
      background:rgba(255,255,255,.14);
    }
    .gradient-card h3{
      position:relative;
      margin:0 0 10px;
      font-size:24px;
      font-weight:1000;
      letter-spacing:-.03em;
    }
    .gradient-card p{
      position:relative;
      margin:0 0 18px;
      color:#dbeafe;
      font-size:14px;
    }
    .mini-stat-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:10px;
      position:relative;
    }
    .mini-stat{
      border-radius:18px;
      padding:14px;
      background:rgba(255,255,255,.12);
      border:1px solid rgba(255,255,255,.16);
    }
    .mini-stat strong{display:block;font-size:22px;line-height:1}
    .mini-stat span{font-size:12px;color:#e0f2fe}
    .tier-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:16px;
      margin-top:20px;
    }
    .tier-card{
      padding:22px;
      position:relative;
    }
    .tier-card.highlight{
      border-color:rgba(47,120,255,.36);
      box-shadow:var(--shadow-brand);
      transform:translateY(-4px);
    }
    .tier-label{
      display:inline-flex;
      padding:6px 10px;
      border-radius:999px;
      background:rgba(47,120,255,.09);
      color:var(--brand-700);
      font-size:12px;
      font-weight:950;
    }
    .tier-card h3{margin:14px 0 6px;font-size:22px;font-weight:1000}
    .tier-card .price{
      font-size:34px;
      font-weight:1000;
      letter-spacing:-.05em;
      color:#0f172a;
      margin:10px 0;
    }
    .tier-card .price small{
      font-size:13px;
      color:var(--muted);
      letter-spacing:0;
      font-weight:800;
    }
    .check-list{
      display:grid;
      gap:9px;
      padding:0;
      margin:16px 0 0;
      list-style:none;
    }
    .check-list li{
      display:flex;
      gap:10px;
      color:#475569;
      font-size:14px;
      align-items:flex-start;
    }
    .check-list li:before{
      content:"✓";
      width:20px;
      height:20px;
      flex:0 0 auto;
      display:grid;
      place-items:center;
      border-radius:999px;
      color:#fff;
      background:linear-gradient(135deg,var(--brand),var(--brand-3));
      font-size:12px;
      font-weight:1000;
      margin-top:2px;
    }
    .timeline{
      margin-top:22px;
      padding:26px;
      border-radius:30px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .timeline-item{
      display:grid;
      grid-template-columns:120px 1fr;
      gap:22px;
      position:relative;
      padding:0 0 22px;
    }
    .timeline-item:not(:last-child):after{
      content:"";
      position:absolute;
      left:119px;
      top:34px;
      bottom:0;
      width:1px;
      background:var(--line);
    }
    .time-pill{
      position:relative;
      z-index:1;
      display:inline-flex;
      justify-content:center;
      align-items:center;
      height:36px;
      border-radius:999px;
      background:#eef7ff;
      color:var(--brand-700);
      font-weight:950;
      font-size:13px;
      border:1px solid rgba(47,120,255,.14);
    }
    .timeline-item h3{margin:0 0 5px;font-size:18px;font-weight:950}
    .timeline-item p{margin:0;color:var(--muted);font-size:14px}
    .security-band{
      border-radius:34px;
      background:
        linear-gradient(135deg,#08111f,#12233e 54%,#132f4a),
        radial-gradient(circle at 80% 10%,rgba(5,199,184,.28),transparent 30%);
      padding:34px;
      color:#fff;
      overflow:hidden;
      position:relative;
      box-shadow:0 30px 90px rgba(8,17,31,.22);
    }
    .security-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
      margin-top:24px;
    }
    .security-card{
      border-radius:24px;
      padding:22px;
      background:rgba(255,255,255,.09);
      border:1px solid rgba(255,255,255,.14);
      backdrop-filter:blur(10px);
    }
    .security-card h3{margin:0 0 8px;font-size:19px;font-weight:1000}
    .security-card p{margin:0;color:#cbd5e1;font-size:14px}
    .proof-row{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:12px;
      margin-top:18px;
    }
    .proof-item{
      border-radius:20px;
      padding:16px;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(255,255,255,.12);
    }
    .proof-item strong{display:block;font-size:24px;line-height:1;color:#fff}
    .proof-item span{font-size:12px;color:#cbd5e1}
    .app-layout{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:22px;
      align-items:stretch;
    }
    .app-panel{
      padding:32px;
      border-radius:34px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .device-stack{
      min-height:390px;
      border-radius:34px;
      padding:28px;
      background:
        radial-gradient(circle at 40% 0%,rgba(47,120,255,.22),transparent 32%),
        linear-gradient(135deg,#eef7ff,#ffffff);
      border:1px solid var(--line);
      display:grid;
      align-content:center;
      gap:16px;
      overflow:hidden;
      position:relative;
    }
    .device-card{
      border-radius:24px;
      padding:18px;
      background:rgba(255,255,255,.86);
      border:1px solid rgba(223,231,242,.9);
      box-shadow:var(--shadow-sm);
    }
    .device-card:nth-child(2){margin-left:48px}
    .device-card:nth-child(3){margin-right:44px}
    .device-card h3{margin:0 0 6px;font-size:17px;font-weight:950}
    .device-card p{margin:0;color:var(--muted);font-size:13px}
    .form-grid{
      display:grid;
      gap:12px;
      margin-top:18px;
    }
    .form-row{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:12px;
    }
    .form-control{
      width:100%;
      border:1px solid var(--line);
      background:#f9fbff;
      border-radius:16px;
      padding:13px 14px;
      outline:none;
      color:var(--ink);
      transition:.22s ease;
    }
    .form-control:hover{border-color:var(--line-strong);background:#fff}
    textarea.form-control{min-height:112px;resize:vertical}
    .form-hint{
      color:var(--muted);
      font-size:13px;
      margin:8px 0 0;
    }
    .footer{
      color:#cbd5e1;
      background:#07101d;
      padding:58px 0 96px;
      position:relative;
      overflow:hidden;
    }
    .footer:before{
      content:"";
      position:absolute;
      width:360px;
      height:360px;
      border-radius:50%;
      background:rgba(47,120,255,.14);
      top:-180px;
      right:8%;
      filter:blur(2px);
    }
    .footer-grid{
      position:relative;
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:28px;
      align-items:start;
    }
    .footer h2,.footer h3{
      margin:0 0 12px;
      color:#fff;
      font-weight:1000;
      letter-spacing:-.03em;
    }
    .footer p{margin:0;color:#94a3b8}
    .footer-links{
      display:grid;
      gap:10px;
    }
    .footer-links a{
      color:#cbd5e1;
      font-weight:800;
      transition:.2s ease;
    }
    .footer-links a:hover{color:#fff;transform:translateX(2px)}
    .copyright{
      position:relative;
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid rgba(255,255,255,.10);
      color:#94a3b8;
      font-size:13px;
      display:flex;
      justify-content:space-between;
      gap:16px;
      flex-wrap:wrap;
    }
    .fixed-cta{
      position:fixed;
      left:50%;
      bottom:18px;
      transform:translateX(-50%);
      width:min(960px, calc(100% - 28px));
      z-index:80;
      border-radius:999px;
      padding:10px 12px 10px 18px;
      background:rgba(8,17,31,.88);
      color:#fff;
      border:1px solid rgba(255,255,255,.14);
      box-shadow:0 24px 70px rgba(0,0,0,.28);
      backdrop-filter:blur(18px);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:14px;
    }
    .fixed-cta strong{font-weight:1000}
    .fixed-cta span{color:#cbd5e1;font-size:13px}
    .fixed-cta .btn{min-height:42px;padding:0 16px}
    .toast{
      position:fixed;
      right:18px;
      bottom:96px;
      z-index:90;
      max-width:320px;
      padding:14px 16px;
      border-radius:18px;
      background:#fff;
      border:1px solid var(--line);
      color:#0f172a;
      box-shadow:var(--shadow);
      transform:translateY(20px);
      opacity:0;
      pointer-events:none;
      transition:.25s ease;
      font-weight:800;
    }
    .toast.show{transform:translateY(0);opacity:1}
    @media (max-width:1024px){
      .header-search{display:none}
      .latest-layout,.answers-wrap,.content-board,.app-layout{grid-template-columns:1fr}
      .answer-side{position:relative;top:auto}
      .triple-grid,.tier-grid{grid-template-columns:1fr 1fr}
      .proof-row{grid-template-columns:1fr 1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      body{padding-bottom:120px}
      .container{width:min(100% - 28px,var(--container))}
      .toolbar{min-height:66px}
      .brand-text strong{font-size:14px}
      .brand-text span{display:none}
      .menu-toggle{display:grid}
      .nav-shell{
        position:fixed;
        left:14px;
        right:14px;
        top:74px;
        display:none;
        justify-content:flex-start;
        background:rgba(255,255,255,.96);
        border:1px solid var(--line);
        border-radius:24px;
        padding:14px;
        box-shadow:var(--shadow);
      }
      .nav-shell.open{display:flex}
      .nav-menu{width:100%;border-radius:18px;justify-content:flex-start}
      .nav-link{width:100%}
      .status-pill{display:none}
      .hero{padding:34px 0 54px}
      .hero-card{border-radius:28px;min-height:auto}
      .hero-grid{padding:42px 18px 28px}
      .promo-ribbon{top:18px;right:-72px}
      .search-box{
        flex-direction:column;
        align-items:stretch;
        border-radius:22px;
        padding:14px;
      }
      .search-icon{display:none}
      .search-box .btn{width:100%}
      .hero-metrics{grid-template-columns:1fr}
      .section{padding:62px 0}
      .section-head{display:block}
      .triple-grid,.tier-grid,.security-grid,.proof-row,.footer-grid{grid-template-columns:1fr}
      .timeline-item{grid-template-columns:1fr;gap:10px}
      .timeline-item:not(:last-child):after{left:18px;top:46px}
      .form-row{grid-template-columns:1fr}
      .fixed-cta{
        border-radius:24px;
        align-items:flex-start;
        flex-direction:column;
      }
      .fixed-cta .btn{width:100%}
      .copyright{display:block}
    }
    @media (max-width:520px){
      .header-actions .btn-primary{display:none}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .hero h1{font-size:34px}
      .hero-lead{font-size:15px}
      .promo-panel,.security-band,.app-panel{padding:22px;border-radius:26px}
      .news-link{grid-template-columns:auto 1fr;padding:15px 12px}
      .news-arrow{display:none}
      .device-card:nth-child(2),.device-card:nth-child(3){margin:0}
    }