/* roulang page: index */
:root{
      --bg:#06101f;
      --bg-2:#091a33;
      --panel:rgba(13,34,65,.64);
      --panel-strong:rgba(17,45,88,.82);
      --text:#eef7ff;
      --muted:#a7bbd5;
      --weak:#7488a5;
      --line:rgba(159,207,255,.18);
      --line-strong:rgba(71,231,255,.35);
      --primary:#47e7ff;
      --primary-2:#7c3aed;
      --accent:#22c55e;
      --warn:#fbbf24;
      --danger:#fb7185;
      --radius-sm:12px;
      --radius:20px;
      --radius-lg:30px;
      --shadow:0 24px 80px rgba(0,0,0,.34);
      --shadow-soft:0 14px 38px rgba(9,22,45,.28);
      --glow:0 0 24px rgba(71,231,255,.34),0 0 64px rgba(124,58,237,.18);
      --container:1180px;
      --header-h:76px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      min-height:100vh;
      background:
        radial-gradient(circle at 12% 8%, rgba(71,231,255,.18), transparent 28%),
        radial-gradient(circle at 84% 12%, rgba(124,58,237,.22), transparent 30%),
        linear-gradient(180deg,#06101f 0%,#071529 42%,#05101f 100%);
      color:var(--text);
      font-family:Inter,"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
      line-height:1.65;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img,svg,video{max-width:100%;display:block}
    button,input,textarea,select{font:inherit}
    button{cursor:pointer}
    ::selection{background:rgba(71,231,255,.32);color:#fff}
    .container{
      width:min(var(--container), calc(100% - 40px));
      margin-inline:auto;
    }
    .site-header{
      position:fixed;
      inset:0 0 auto 0;
      z-index:60;
      height:var(--header-h);
      border-bottom:1px solid rgba(159,207,255,.12);
      background:rgba(5,16,31,.68);
      backdrop-filter:blur(18px);
      transition:background .25s ease, box-shadow .25s ease, border-color .25s ease;
    }
    .site-header.is-scrolled{
      background:rgba(5,16,31,.92);
      border-color:rgba(159,207,255,.2);
      box-shadow:0 16px 42px rgba(0,0,0,.28);
    }
    .nav-wrap{
      height:var(--header-h);
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:18px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      min-width:0;
      font-weight:900;
      letter-spacing:-.02em;
    }
    .brand-mark{
      width:42px;
      height:42px;
      border-radius:16px;
      background:
        radial-gradient(circle at 35% 25%, #fff 0 8%, transparent 9%),
        linear-gradient(135deg, rgba(71,231,255,.95), rgba(124,58,237,.95));
      box-shadow:var(--glow);
      position:relative;
      flex:0 0 auto;
    }
    .brand-mark:after{
      content:"";
      position:absolute;
      inset:10px;
      border:1px solid rgba(255,255,255,.72);
      border-radius:12px;
    }
    .brand-text{
      font-size:18px;
      white-space:nowrap;
      overflow:hidden;
      text-overflow:ellipsis;
      max-width:430px;
    }
    .main-nav{
      display:flex;
      align-items:center;
      gap:8px;
      padding:6px;
      border:1px solid rgba(159,207,255,.14);
      background:rgba(255,255,255,.04);
      border-radius:999px;
    }
    .main-nav a{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      min-height:38px;
      padding:0 18px;
      border-radius:999px;
      color:var(--muted);
      font-weight:700;
      transition:color .2s ease, background .2s ease, transform .2s ease;
    }
    .main-nav a:hover,
    .main-nav a:focus-visible{
      color:#fff;
      background:rgba(71,231,255,.1);
      outline:none;
      transform:translateY(-1px);
    }
    .main-nav a.active{
      color:#06101f;
      background:linear-gradient(135deg, var(--primary), #b5f7ff);
      box-shadow:0 10px 28px rgba(71,231,255,.24);
    }
    .nav-actions{
      display:flex;
      align-items:center;
      gap:10px;
    }
    .location-pill{
      display:flex;
      align-items:center;
      gap:8px;
      min-height:40px;
      padding:0 14px;
      border-radius:999px;
      border:1px solid rgba(159,207,255,.16);
      background:rgba(255,255,255,.05);
      color:var(--muted);
      font-size:14px;
      white-space:nowrap;
    }
    .location-dot{
      width:9px;
      height:9px;
      border-radius:50%;
      background:var(--accent);
      box-shadow:0 0 16px rgba(34,197,94,.75);
    }
    .menu-btn{
      display:none;
      width:44px;
      height:44px;
      border:none;
      border-radius:15px;
      color:#fff;
      background:rgba(255,255,255,.08);
      border:1px solid rgba(159,207,255,.14);
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      min-height:46px;
      padding:0 20px;
      border-radius:999px;
      border:1px solid transparent;
      font-weight:850;
      letter-spacing:.01em;
      transition:transform .22s ease, box-shadow .22s ease, background .22s ease, border-color .22s ease, color .22s ease;
      user-select:none;
    }
    .btn:focus-visible,
    .field:focus-visible,
    .select-field:focus-visible,
    textarea:focus-visible{
      outline:3px solid rgba(71,231,255,.32);
      outline-offset:3px;
    }
    .btn-primary{
      color:#041121;
      background:linear-gradient(135deg, #47e7ff 0%, #a7f3ff 54%, #8b5cf6 120%);
      box-shadow:var(--glow);
    }
    .btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 30px rgba(71,231,255,.45),0 16px 44px rgba(0,0,0,.25)}
    .btn-secondary{
      color:#fff;
      background:rgba(255,255,255,.07);
      border-color:rgba(159,207,255,.2);
    }
    .btn-secondary:hover{background:rgba(71,231,255,.1);border-color:rgba(71,231,255,.35);transform:translateY(-2px)}
    .btn-ghost{
      color:var(--primary);
      background:rgba(71,231,255,.08);
      border-color:rgba(71,231,255,.18);
    }
    .btn-ghost:hover{background:rgba(71,231,255,.14);transform:translateY(-2px)}
    .hero{
      min-height:760px;
      position:relative;
      display:flex;
      align-items:center;
      padding:calc(var(--header-h) + 72px) 0 92px;
      overflow:hidden;
      border-bottom:1px solid rgba(159,207,255,.12);
    }
    .hero-video-bg{
      position:absolute;
      inset:0;
      overflow:hidden;
      z-index:0;
    }
    .hero-video-bg video{
      width:100%;
      height:100%;
      object-fit:cover;
      opacity:.42;
      filter:saturate(1.18) contrast(1.08);
      background:
        linear-gradient(120deg, rgba(8,28,57,.8), rgba(7,21,41,.2)),
        repeating-linear-gradient(90deg, rgba(71,231,255,.08) 0 1px, transparent 1px 90px);
    }
    .video-fallback{
      position:absolute;
      inset:0;
      background:
        linear-gradient(115deg, rgba(5,16,31,.92), rgba(6,28,55,.66) 42%, rgba(13,29,73,.72)),
        radial-gradient(circle at 52% 38%, rgba(71,231,255,.22), transparent 22%),
        linear-gradient(90deg, rgba(71,231,255,.05) 1px, transparent 1px),
        linear-gradient(0deg, rgba(71,231,255,.04) 1px, transparent 1px);
      background-size:auto, auto, 74px 74px, 74px 74px;
    }
    .hero:after{
      content:"";
      position:absolute;
      inset:0;
      background:
        linear-gradient(180deg, rgba(6,16,31,.18), rgba(6,16,31,.92)),
        radial-gradient(circle at 50% 85%, rgba(71,231,255,.12), transparent 30%);
      z-index:1;
    }
    .hero-content{
      position:relative;
      z-index:2;
      width:100%;
    }
    .hero-panel{
      max-width:980px;
      margin-inline:auto;
      text-align:center;
      padding:38px;
      border:1px solid rgba(159,207,255,.18);
      background:linear-gradient(180deg, rgba(13,34,65,.58), rgba(5,16,31,.42));
      box-shadow:var(--shadow);
      border-radius:var(--radius-lg);
      backdrop-filter:blur(18px);
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:9px;
      padding:8px 13px;
      border-radius:999px;
      color:#c9f8ff;
      background:rgba(71,231,255,.1);
      border:1px solid rgba(71,231,255,.24);
      font-weight:800;
      font-size:14px;
      margin-bottom:18px;
    }
    .eyebrow:before{
      content:"";
      width:8px;
      height:8px;
      border-radius:50%;
      background:var(--primary);
      box-shadow:0 0 18px rgba(71,231,255,.9);
    }
    h1{
      margin:0;
      font-size:clamp(38px, 6vw, 76px);
      line-height:1.04;
      letter-spacing:-.055em;
      font-weight:950;
    }
    .hero-lead{
      max-width:820px;
      margin:22px auto 0;
      color:#c9d9ee;
      font-size:clamp(17px, 2vw, 21px);
    }
    .hero-actions{
      display:flex;
      align-items:center;
      justify-content:center;
      flex-wrap:wrap;
      gap:14px;
      margin-top:32px;
    }
    .play-button{
      width:72px;
      height:72px;
      margin:26px auto 0;
      display:grid;
      place-items:center;
      border-radius:50%;
      border:1px solid rgba(255,255,255,.22);
      background:rgba(255,255,255,.1);
      box-shadow:0 0 38px rgba(71,231,255,.34);
      backdrop-filter:blur(14px);
      transition:transform .22s ease, background .22s ease, box-shadow .22s ease;
    }
    .play-button:hover{transform:scale(1.06);background:rgba(71,231,255,.16);box-shadow:0 0 54px rgba(71,231,255,.48)}
    .play-triangle{
      width:0;
      height:0;
      border-top:13px solid transparent;
      border-bottom:13px solid transparent;
      border-left:20px solid #fff;
      margin-left:5px;
    }
    .hero-metrics{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:12px;
      max-width:800px;
      margin:32px auto 0;
    }
    .metric-mini{
      padding:16px;
      border-radius:18px;
      border:1px solid rgba(159,207,255,.16);
      background:rgba(255,255,255,.055);
    }
    .metric-mini strong{
      display:block;
      color:#fff;
      font-size:25px;
      line-height:1.15;
    }
    .metric-mini span{
      display:block;
      color:var(--muted);
      font-size:13px;
      margin-top:3px;
    }
    .section{
      padding:92px 0;
      position:relative;
    }
    .section-tight{padding:70px 0}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .section-kicker{
      color:var(--primary);
      font-weight:900;
      letter-spacing:.08em;
      font-size:13px;
      text-transform:uppercase;
      margin-bottom:8px;
    }
    .section-title{
      margin:0;
      font-size:clamp(28px, 3.6vw, 46px);
      line-height:1.12;
      letter-spacing:-.035em;
      font-weight:950;
    }
    .section-desc{
      max-width:660px;
      color:var(--muted);
      margin:12px 0 0;
      font-size:16px;
    }
    .glass-card{
      border:1px solid var(--line);
      background:linear-gradient(180deg, rgba(255,255,255,.075), rgba(255,255,255,.035));
      border-radius:var(--radius);
      box-shadow:var(--shadow-soft);
      backdrop-filter:blur(16px);
      transition:transform .24s ease, border-color .24s ease, box-shadow .24s ease, background .24s ease;
    }
    .glass-card:hover{
      transform:translateY(-5px);
      border-color:rgba(71,231,255,.34);
      box-shadow:0 22px 62px rgba(0,0,0,.32), 0 0 34px rgba(71,231,255,.1);
      background:linear-gradient(180deg, rgba(255,255,255,.1), rgba(255,255,255,.045));
    }
    .channel-layout{
      display:grid;
      grid-template-columns:1.05fr .95fr;
      gap:22px;
      align-items:stretch;
    }
    .feature-large{
      padding:28px;
      min-height:420px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
      overflow:hidden;
      position:relative;
    }
    .feature-large:before{
      content:"";
      position:absolute;
      width:360px;
      height:360px;
      border-radius:999px;
      background:radial-gradient(circle, rgba(71,231,255,.24), transparent 64%);
      right:-120px;
      bottom:-160px;
      pointer-events:none;
    }
    .badge-row{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
    }
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      padding:8px 12px;
      border-radius:999px;
      color:#dff9ff;
      border:1px solid rgba(71,231,255,.2);
      background:rgba(71,231,255,.08);
      font-weight:800;
      font-size:13px;
    }
    .badge.gold{
      color:#fff2c2;
      border-color:rgba(251,191,36,.22);
      background:rgba(251,191,36,.08);
    }
    .feature-title{
      margin:24px 0 10px;
      font-size:30px;
      line-height:1.18;
      letter-spacing:-.02em;
      font-weight:950;
    }
    .feature-text{color:var(--muted);margin:0;max-width:560px}
    .signal-board{
      margin-top:28px;
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:12px;
      position:relative;
      z-index:1;
    }
    .signal-item{
      padding:16px;
      border-radius:18px;
      background:rgba(5,16,31,.46);
      border:1px solid rgba(159,207,255,.13);
    }
    .signal-item b{display:block;font-size:22px;color:#fff}
    .signal-item small{display:block;color:var(--weak);margin-top:4px}
    .feature-grid{
      display:grid;
      grid-template-columns:repeat(2,1fr);
      gap:18px;
    }
    .feature-card{
      padding:22px;
      min-height:201px;
    }
    .icon-box{
      width:46px;
      height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      margin-bottom:16px;
      color:#071529;
      background:linear-gradient(135deg, #47e7ff, #d5fbff);
      box-shadow:0 12px 28px rgba(71,231,255,.16);
      font-weight:950;
    }
    .feature-card h3,
    .case-card h3,
    .price-card h3{
      margin:0 0 8px;
      font-size:19px;
      font-weight:900;
    }
    .feature-card p,
    .case-card p,
    .price-card p{
      margin:0;
      color:var(--muted);
      font-size:14.8px;
    }
    .data-strip{
      padding:34px;
      border-radius:var(--radius-lg);
      border:1px solid rgba(71,231,255,.22);
      background:
        linear-gradient(90deg, rgba(71,231,255,.12), rgba(124,58,237,.1)),
        rgba(255,255,255,.04);
      box-shadow:var(--glow);
    }
    .data-grid{
      display:grid;
      grid-template-columns:repeat(4,1fr);
      gap:18px;
    }
    .data-item{
      padding:18px;
      border-radius:20px;
      background:rgba(5,16,31,.42);
      border:1px solid rgba(255,255,255,.09);
    }
    .data-item strong{
      display:block;
      font-size:36px;
      line-height:1;
      letter-spacing:-.03em;
      color:#fff;
    }
    .data-item span{
      display:block;
      margin-top:10px;
      color:var(--muted);
      font-size:14px;
    }
    .lead-shell{
      display:grid;
      grid-template-columns:.95fr 1.05fr;
      gap:22px;
      align-items:stretch;
    }
    .lead-copy{
      padding:30px;
      display:flex;
      flex-direction:column;
      justify-content:space-between;
    }
    .step-list{
      display:grid;
      gap:14px;
      margin-top:28px;
    }
    .step-item{
      display:grid;
      grid-template-columns:46px 1fr;
      gap:14px;
      align-items:start;
      padding:15px;
      border-radius:18px;
      background:rgba(255,255,255,.045);
      border:1px solid rgba(159,207,255,.12);
    }
    .step-no{
      width:46px;
      height:46px;
      border-radius:16px;
      display:grid;
      place-items:center;
      font-weight:950;
      color:#071529;
      background:linear-gradient(135deg,#47e7ff,#bdf7ff);
    }
    .step-item b{display:block;color:#fff}
    .step-item span{display:block;color:var(--muted);font-size:14px;margin-top:3px}
    .lead-form{
      padding:26px;
    }
    .form-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:14px;
    }
    .field-group{display:flex;flex-direction:column;gap:7px}
    .field-group.full{grid-column:1 / -1}
    label{
      color:#d9e9fb;
      font-weight:800;
      font-size:14px;
    }
    .field,
    .select-field,
    textarea{
      width:100%;
      min-height:48px;
      border-radius:15px;
      border:1px solid rgba(159,207,255,.16);
      color:#fff;
      background:rgba(5,16,31,.58);
      padding:0 14px;
      transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
    }
    textarea{
      min-height:112px;
      padding:13px 14px;
      resize:vertical;
    }
    .field::placeholder,
    textarea::placeholder{color:#7186a1}
    .field:hover,
    .select-field:hover,
    textarea:hover{border-color:rgba(71,231,255,.3);background:rgba(5,16,31,.72)}
    .form-note{
      color:var(--weak);
      font-size:13px;
      margin:13px 0 0;
    }
    .form-success{
      display:none;
      margin-top:14px;
      padding:12px 14px;
      border-radius:15px;
      color:#d8ffe7;
      background:rgba(34,197,94,.1);
      border:1px solid rgba(34,197,94,.22);
    }
    .news-layout{
      display:grid;
      grid-template-columns:1.35fr .65fr;
      gap:22px;
    }
    .news-list{
      padding:10px;
    }
    .news-link{
      display:grid;
      grid-template-columns:130px 1fr auto;
      gap:18px;
      align-items:center;
      padding:20px;
      border-radius:19px;
      transition:background .2s ease, transform .2s ease, border-color .2s ease;
      border:1px solid transparent;
    }
    .news-link:hover{
      background:rgba(255,255,255,.055);
      transform:translateX(4px);
      border-color:rgba(71,231,255,.18);
    }
    .news-date{
      color:var(--primary);
      font-weight:900;
      font-size:14px;
    }
    .news-title{
      margin:0;
      color:#fff;
      font-weight:900;
      font-size:18px;
    }
    .news-summary{
      margin:4px 0 0;
      color:var(--muted);
      font-size:14px;
    }
    .arrow{
      color:var(--primary);
      font-size:22px;
    }
    .recommend-box{
      padding:24px;
      position:sticky;
      top:98px;
    }
    .tag-cloud{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:18px;
    }
    .tag{
      padding:9px 12px;
      border-radius:999px;
      background:rgba(255,255,255,.055);
      border:1px solid rgba(159,207,255,.14);
      color:#dcecff;
      font-weight:750;
      font-size:13px;
      transition:background .2s ease, border-color .2s ease, transform .2s ease;
    }
    .tag:hover{background:rgba(71,231,255,.1);border-color:rgba(71,231,255,.28);transform:translateY(-2px)}
    .privacy-wrap{
      display:grid;
      grid-template-columns:.8fr 1.2fr;
      gap:22px;
      align-items:stretch;
    }
    .privacy-card{
      padding:28px;
    }
    .check-list{
      display:grid;
      gap:13px;
      margin:22px 0 0;
      padding:0;
      list-style:none;
    }
    .check-list li{
      position:relative;
      padding-left:30px;
      color:var(--muted);
    }
    .check-list li:before{
      content:"✓";
      position:absolute;
      left:0;
      top:0;
      width:21px;
      height:21px;
      display:grid;
      place-items:center;
      border-radius:50%;
      color:#06101f;
      background:var(--primary);
      font-weight:950;
      font-size:13px;
    }
    .faq-list{
      display:grid;
      gap:12px;
    }
    .faq-item{
      border:1px solid rgba(159,207,255,.14);
      border-radius:18px;
      background:rgba(255,255,255,.045);
      overflow:hidden;
    }
    .faq-q{
      width:100%;
      min-height:60px;
      border:0;
      color:#fff;
      background:transparent;
      padding:18px 20px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:16px;
      text-align:left;
      font-weight:900;
    }
    .faq-q span:last-child{
      width:28px;
      height:28px;
      border-radius:50%;
      display:grid;
      place-items:center;
      background:rgba(71,231,255,.1);
      color:var(--primary);
      flex:0 0 auto;
      transition:transform .2s ease;
    }
    .faq-a{
      max-height:0;
      overflow:hidden;
      transition:max-height .25s ease;
    }
    .faq-a p{
      margin:0;
      padding:0 20px 18px;
      color:var(--muted);
      font-size:15px;
    }
    .faq-item.open .faq-a{max-height:220px}
    .faq-item.open .faq-q span:last-child{transform:rotate(45deg)}
    .cta-section{
      padding:78px 0 96px;
    }
    .cta-box{
      padding:38px;
      border-radius:34px;
      border:1px solid rgba(71,231,255,.24);
      background:
        radial-gradient(circle at 16% 18%, rgba(71,231,255,.22), transparent 32%),
        radial-gradient(circle at 88% 70%, rgba(124,58,237,.22), transparent 30%),
        linear-gradient(135deg, rgba(255,255,255,.09), rgba(255,255,255,.035));
      box-shadow:var(--glow);
      display:grid;
      grid-template-columns:1fr auto;
      gap:24px;
      align-items:center;
    }
    .cta-box h2{
      margin:0;
      font-size:clamp(28px,3.4vw,44px);
      line-height:1.12;
      letter-spacing:-.03em;
      font-weight:950;
    }
    .cta-box p{
      margin:12px 0 0;
      color:var(--muted);
      max-width:720px;
    }
    .site-footer{
      border-top:1px solid rgba(159,207,255,.13);
      background:rgba(3,10,22,.72);
      padding:48px 0 28px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:28px;
      align-items:start;
    }
    .footer-brand{
      display:flex;
      align-items:center;
      gap:12px;
      font-weight:950;
      font-size:18px;
    }
    .footer-text{
      color:var(--muted);
      margin:16px 0 0;
      max-width:650px;
    }
    .footer-panel{
      padding:20px;
      border-radius:20px;
      border:1px solid rgba(159,207,255,.13);
      background:rgba(255,255,255,.04);
    }
    .footer-panel b{display:block;color:#fff;margin-bottom:10px}
    .footer-links{
      display:flex;
      flex-wrap:wrap;
      gap:10px;
      margin-top:14px;
    }
    .footer-links a{
      color:var(--muted);
      padding:7px 10px;
      border-radius:999px;
      background:rgba(255,255,255,.04);
      transition:color .2s ease, background .2s ease;
    }
    .footer-links a:hover{color:#fff;background:rgba(71,231,255,.1)}
    .copyright{
      margin-top:34px;
      padding-top:22px;
      border-top:1px solid rgba(159,207,255,.1);
      color:var(--weak);
      display:flex;
      flex-wrap:wrap;
      gap:10px 18px;
      justify-content:space-between;
      font-size:13px;
    }
    .mobile-panel{
      display:none;
      position:fixed;
      top:var(--header-h);
      left:18px;
      right:18px;
      z-index:59;
      border-radius:22px;
      border:1px solid rgba(159,207,255,.18);
      background:rgba(5,16,31,.96);
      box-shadow:var(--shadow);
      padding:14px;
    }
    .mobile-panel.open{display:block}
    .mobile-panel a{
      display:flex;
      min-height:48px;
      align-items:center;
      padding:0 14px;
      border-radius:14px;
      font-weight:850;
      color:#fff;
      background:rgba(71,231,255,.1);
    }
    @media (max-width:1024px){
      :root{--header-h:70px}
      .brand-text{max-width:300px}
      .location-pill{display:none}
      .hero{min-height:710px}
      .channel-layout,
      .lead-shell,
      .privacy-wrap,
      .news-layout{grid-template-columns:1fr}
      .recommend-box{position:relative;top:auto}
      .data-grid{grid-template-columns:repeat(2,1fr)}
      .cta-box{grid-template-columns:1fr}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px, var(--container))}
      .main-nav{display:none}
      .menu-btn{display:grid;place-items:center}
      .brand-text{max-width:calc(100vw - 150px);font-size:15px}
      .hero{min-height:760px;padding:calc(var(--header-h) + 42px) 0 62px}
      .hero-panel{padding:26px 18px;border-radius:26px}
      .hero-actions{align-items:stretch}
      .hero-actions .btn{width:100%}
      .hero-metrics{grid-template-columns:1fr}
      .section{padding:68px 0}
      .section-head{display:block}
      .section-desc{font-size:15px}
      .feature-grid,
      .signal-board,
      .form-grid{grid-template-columns:1fr}
      .data-grid{grid-template-columns:1fr}
      .news-link{grid-template-columns:1fr;gap:8px}
      .arrow{display:none}
      .footer-grid{grid-template-columns:1fr}
      .copyright{display:block}
      .copyright span{display:block;margin-top:8px}
    }
    @media (max-width:520px){
      h1{font-size:36px}
      .brand-mark{width:38px;height:38px;border-radius:14px}
      .nav-wrap{gap:10px}
      .hero-panel{padding:22px 14px}
      .play-button{width:62px;height:62px}
      .feature-large,
      .lead-copy,
      .lead-form,
      .privacy-card,
      .cta-box{padding:22px}
      .data-strip{padding:22px}
      .metric-mini strong,.data-item strong{font-size:28px}
    }