:root{--bg:#0b0d12;--bg-soft:#12151c;--fg:#f2f4f8;--muted:#9aa3b2;--brand:#6c5ce7;--brand-hover:#5a4bd4;--border:#242a36;--radius:12px}*{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--fg);-webkit-font-smoothing:antialiased;font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}a{color:inherit;text-decoration:none}.hero{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:28px;min-height:100dvh;padding:48px 20px;display:flex}.brand{letter-spacing:-.02em;font-size:20px;font-weight:700}.brand span{color:var(--brand)}.hero h1{letter-spacing:-.03em;max-width:18ch;margin:0;font-size:clamp(28px,5vw,48px);line-height:1.1}.hero p.sub{color:var(--muted);max-width:52ch;margin:0;font-size:clamp(15px,2.2vw,19px)}.video{aspect-ratio:16/9;border-radius:var(--radius);border:1px solid var(--border);background:linear-gradient(180deg, var(--bg-soft), #0d1017);width:min(760px,92vw);color:var(--muted);justify-content:center;align-items:center;font-size:14px;display:flex}.buttons{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.btn{border:1px solid var(--border);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;padding:12px 20px;font-size:15px;font-weight:600;transition:background .15s,border-color .15s,transform 50ms;display:inline-flex}.btn:active{transform:translateY(1px)}.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-hover);border-color:var(--brand-hover)}.btn-ghost:hover{background:var(--bg-soft)}.footnote{color:var(--muted);font-size:13px}.shell{max-width:880px;margin:0 auto;padding:40px 20px}.card{border:1px solid var(--border);background:var(--bg-soft);border-radius:var(--radius);padding:24px}.divider{color:var(--muted);align-items:center;gap:12px;margin:16px 0;font-size:13px;display:flex}.divider:before,.divider:after{content:"";background:var(--border);flex:1;height:1px}