:root{
    --bg:#F4F5F6; --surface:#FFFFFF; --panel:#FBFBFA;
    --text:#14181D; --muted:#59626C; --faint:#8B939C;
    --border:#E3E6E9; --border-strong:#D3D7DB;
    --accent:#B5760E; --accent-graphic:#E5A94E; --accent-soft:#F6ECD8;
    --ok:#2E7D53;
    --shadow:0 1px 2px rgba(20,24,29,.04),0 8px 30px rgba(20,24,29,.06);
    --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,monospace;
    --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  }
  @media (prefers-color-scheme:dark){
    :root{
      --bg:#0B0D10; --surface:#101318; --panel:#14181E;
      --text:#ECEEF1; --muted:#98A0AA; --faint:#6B747E;
      --border:rgba(255,255,255,.09); --border-strong:rgba(255,255,255,.16);
      --accent:#E7AC53; --accent-graphic:#E7AC53; --accent-soft:rgba(231,172,83,.12);
      --ok:#5FBE8A;
      --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 40px rgba(0,0,0,.36);
    }
  }
  :root[data-theme="light"]{
    --bg:#F4F5F6; --surface:#FFFFFF; --panel:#FBFBFA;
    --text:#14181D; --muted:#59626C; --faint:#8B939C;
    --border:#E3E6E9; --border-strong:#D3D7DB;
    --accent:#B5760E; --accent-graphic:#E5A94E; --accent-soft:#F6ECD8; --ok:#2E7D53;
    --shadow:0 1px 2px rgba(20,24,29,.04),0 8px 30px rgba(20,24,29,.06);
  }
  :root[data-theme="dark"]{
    --bg:#0B0D10; --surface:#101318; --panel:#14181E;
    --text:#ECEEF1; --muted:#98A0AA; --faint:#6B747E;
    --border:rgba(255,255,255,.09); --border-strong:rgba(255,255,255,.16);
    --accent:#E7AC53; --accent-graphic:#E7AC53; --accent-soft:rgba(231,172,83,.12); --ok:#5FBE8A;
    --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 40px rgba(0,0,0,.36);
  }

  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%}
  body{
    margin:0;background:var(--bg);color:var(--text);
    font-family:var(--sans);font-size:16px;line-height:1.55;
    -webkit-font-smoothing:antialiased;overflow-x:hidden;
  }
  a{color:inherit;text-decoration:none}
  .wrap{max-width:1120px;margin:0 auto;padding:0 24px}
  .kick{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:500}
  .btn{
    display:inline-flex;align-items:center;gap:8px;height:42px;padding:0 18px;border-radius:10px;
    font-weight:560;font-size:14.5px;cursor:pointer;border:1px solid transparent;white-space:nowrap;
    transition:transform .12s ease,background .18s ease,border-color .18s ease;
  }
  .btn:active{transform:translateY(1px)}
  .btn-primary{background:var(--text);color:var(--bg)}
  .btn-primary:hover{background:var(--accent);color:#1a1204}
  .btn-ghost{border-color:var(--border-strong);color:var(--text);background:transparent}
  .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

  /* ---- nav ---- */
  header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 82%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
  nav{display:flex;align-items:center;justify-content:space-between;height:64px}
  .brand{display:flex;align-items:center;gap:10px;font-weight:640;letter-spacing:-.01em;font-size:17px}
  .mark{width:26px;height:26px;flex:0 0 auto}
  .nav-links{display:flex;gap:28px;font-size:14.5px;color:var(--muted)}
  .nav-links a:hover{color:var(--text)}
  .nav-right{display:flex;align-items:center;gap:14px}
  .icon-btn{width:38px;height:38px;display:grid;place-items:center;border-radius:9px;border:1px solid var(--border);background:transparent;color:var(--muted);cursor:pointer}
  .icon-btn:hover{color:var(--text);border-color:var(--border-strong)}
  @media(max-width:860px){.nav-links,.nav-right .btn-ghost{display:none}}

  /* ---- hero ---- */
  .hero{position:relative;padding:76px 0 40px}
  .glow{position:absolute;inset:0;overflow:hidden;pointer-events:none;z-index:0}
  .glow::before{content:"";position:absolute;top:-160px;left:12%;width:520px;height:520px;border-radius:50%;
    background:radial-gradient(circle,var(--accent-graphic),transparent 62%);opacity:.16;filter:blur(30px)}
  .hero-grid{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
  h1{font-size:clamp(34px,5vw,54px);line-height:1.04;letter-spacing:-.028em;font-weight:660;margin:18px 0 0;text-wrap:balance}
  .sub{margin:22px 0 0;font-size:18px;color:var(--muted);max-width:34em}
  .cta-row{display:flex;gap:12px;margin-top:30px;flex-wrap:wrap}
  .trust{margin-top:26px;display:flex;align-items:center;gap:10px;font-size:13px;color:var(--faint)}
  .avatars{display:flex}
  .avatars span{width:24px;height:24px;border-radius:50%;border:2px solid var(--bg);margin-left:-7px;background:linear-gradient(135deg,var(--accent-graphic),var(--border-strong))}
  .avatars span:first-child{margin-left:0}
  @media(max-width:860px){.hero-grid{grid-template-columns:1fr;gap:36px}}

  /* ---- chat panel ---- */
  .panel{background:var(--surface);border:1px solid var(--border);border-radius:16px;box-shadow:var(--shadow);overflow:hidden}
  .panel-bar{display:flex;align-items:center;gap:8px;padding:12px 16px;border-bottom:1px solid var(--border);background:var(--panel)}
  .dot{width:9px;height:9px;border-radius:50%;background:var(--border-strong)}
  .panel-bar .title{margin-left:6px;font-family:var(--mono);font-size:12px;color:var(--faint)}
  .chat{padding:20px 18px;display:flex;flex-direction:column;gap:14px}
  .msg{max-width:88%;padding:11px 14px;border-radius:13px;font-size:14.5px;line-height:1.5;opacity:0;animation:rise .5s ease forwards}
  .msg.u{align-self:flex-end;background:var(--accent-soft);color:var(--text);border:1px solid var(--border)}
  .msg.a{align-self:flex-start;background:var(--panel);border:1px solid var(--border)}
  .msg.a b{font-weight:620}
  .msg.a ul{margin:8px 0 2px;padding-left:18px;color:var(--muted)}
  .msg.a li{margin:3px 0}
  .src{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-family:var(--mono);font-size:11.5px;color:var(--accent);background:var(--accent-soft);padding:4px 9px;border-radius:20px}
  .msg:nth-child(1){animation-delay:.15s}
  .msg:nth-child(2){animation-delay:.5s}
  .msg:nth-child(3){animation-delay:1s}
  .typing{align-self:flex-start;display:flex;gap:4px;padding:12px 14px}
  .typing i{width:6px;height:6px;border-radius:50%;background:var(--faint);animation:blink 1.2s infinite}
  .typing i:nth-child(2){animation-delay:.2s}.typing i:nth-child(3){animation-delay:.4s}
  @keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
  @keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}
  @media(prefers-reduced-motion:reduce){.msg{opacity:1;animation:none}.typing i{animation:none}.glow::before{filter:none}}

  /* ---- logos ---- */
  .logos{border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:22px 0;margin-top:48px}
  .logos .wrap{display:flex;align-items:center;gap:30px;flex-wrap:wrap;justify-content:center}
  .logos span{font-weight:600;font-size:15px;color:var(--faint);letter-spacing:-.01em;opacity:.8}
  .logos .lbl{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);width:100%;text-align:center;margin-bottom:2px}

  /* ---- features ---- */
  section.block{padding:84px 0}
  .head{max-width:38em}
  .head h2{font-size:clamp(26px,3.4vw,34px);letter-spacing:-.022em;margin:12px 0 0;font-weight:640;text-wrap:balance}
  .head p{color:var(--muted);font-size:17px;margin:14px 0 0}
  .cards{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}
  @media(max-width:860px){.cards{grid-template-columns:1fr}}
  .card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:24px 22px;transition:border-color .2s ease,transform .2s ease}
  .card:hover{border-color:var(--border-strong);transform:translateY(-2px)}
  .card .ic{width:34px;height:34px;border-radius:9px;display:grid;place-items:center;background:var(--accent-soft);color:var(--accent);margin-bottom:16px}
  .card h3{font-size:17px;margin:0 0 8px;letter-spacing:-.01em;font-weight:600}
  .card p{margin:0;color:var(--muted);font-size:14.5px;line-height:1.55}

  /* ---- stats ---- */
  .stats{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--border);border:1px solid var(--border);border-radius:14px;overflow:hidden}
  @media(max-width:680px){.stats{grid-template-columns:1fr 1fr}}
  .stat{background:var(--surface);padding:28px 22px}
  .stat .n{font-size:30px;font-weight:660;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
  .stat .l{font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--faint);margin-top:6px}

  /* ---- cta band ---- */
  .band{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:52px 44px;text-align:center;box-shadow:var(--shadow)}
  .band h2{font-size:clamp(24px,3.2vw,32px);letter-spacing:-.022em;margin:0;font-weight:640;text-wrap:balance}
  .band p{color:var(--muted);margin:14px auto 0;max-width:30em}
  .form{display:flex;gap:10px;justify-content:center;margin-top:26px;flex-wrap:wrap}
  .form input{height:46px;padding:0 16px;min-width:260px;border-radius:11px;border:1px solid var(--border-strong);background:var(--bg);color:var(--text);font-size:15px;font-family:var(--sans)}
  .form input::placeholder{color:var(--faint)}
  .form .btn{height:46px}

  /* ---- footer ---- */
  footer{border-top:1px solid var(--border);margin-top:90px;padding:56px 0 40px}
  .foot{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:32px}
  @media(max-width:860px){.foot{grid-template-columns:1fr 1fr}}
  .foot h4{font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--faint);margin:0 0 14px;font-weight:500}
  .foot a{display:block;color:var(--muted);font-size:14px;padding:4px 0}
  .foot a:hover{color:var(--text)}
  .foot .about{color:var(--muted);font-size:14px;max-width:26em;margin:14px 0 0}
  .legal{display:flex;justify-content:space-between;align-items:center;margin-top:44px;padding-top:22px;border-top:1px solid var(--border);color:var(--faint);font-size:13px;flex-wrap:wrap;gap:12px}

.block-flush{padding-top:0}
.lead-18{font-size:18px}