:root{--bg: #020617;--surface: #0f172a;--card: #0f172a;--border: #1e293b;--border-hi: #334155;--text: #f8fafc;--text-2: #cbd5e1;--text-3: #94a3b8;--accent: #22d3ee;--cool: #67e8f9;--heat: #f97316;--ok: #34d399;--bad: #f87171;--r: 10px;--r-lg: 14px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--fs-eyebrow: .72rem;--fs-body: .95rem;--fs-h2: 1.15rem;--fs-hero: 1.95rem;--elev-3: 0 20px 40px rgba(0,0,0,.35)}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif;min-height:100vh}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}button{font:inherit;cursor:pointer}.app{max-width:62rem;margin:0 auto;padding:2rem 1.2rem 3rem}.hero{font-size:var(--fs-hero);font-weight:600;letter-spacing:-.03em;margin:0 0 .3rem}.hero-sub{color:var(--text-2);font-size:1rem;margin:0 0 1.5rem}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-lg);padding:1.2rem 1.3rem;margin:1rem 0}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.7rem 1.4rem;border-radius:var(--r);border:1px solid var(--border-hi);background:transparent;color:var(--text);font-size:1rem;font-weight:500;transition:background .12s,border-color .12s}.btn:hover{border-color:var(--accent)}.btn.primary{background:var(--accent);border-color:var(--accent);color:#041216}.btn.primary:hover{filter:brightness(1.1)}.section-eyebrow{font-size:var(--fs-eyebrow);color:var(--text-3);letter-spacing:.06em;text-transform:uppercase;font-weight:500;margin:1.4rem 0 .4rem}.brand-mark{display:inline-flex;align-items:center;gap:.55rem;font-weight:600;font-size:1.05rem;color:var(--text);margin-bottom:1.8rem}.brand-mark .dot{width:10px;height:10px;border-radius:50%;background:var(--accent)}.stack{display:flex;flex-direction:column;gap:1rem}.row{display:flex;align-items:center;gap:1rem;justify-content:space-between}@media(max-width:500px){.app{padding:1.3rem 1rem 2rem}.hero{font-size:1.6rem}}