:root{--bg:#0f1419;--panel:#1a222c;--text:#e8eef4;--muted:#9aa8b5;--accent:#3d9cf0;--accent-2:#5ecf9a;--danger:#e85d5d;--border:#2a3542;--font:"Segoe UI",system-ui,sans-serif}*{box-sizing:border-box}body,html{margin:0;min-height:100%;background:radial-gradient(1200px 600px at 10% -10%,#1c3a5a 0,transparent 55%),radial-gradient(900px 500px at 100% 0,#1a3d32 0,transparent 50%),var(--bg);color:var(--text);font-family:var(--font)}a{color:var(--accent);text-decoration:none}main{max-width:960px;margin:0 auto;padding:1.5rem}.panel{background:color-mix(in srgb,var(--panel) 92%,transparent);border:1px solid var(--border);border-radius:14px;padding:1.25rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;border:0;border-radius:10px;padding:.7rem 1rem;background:var(--accent);color:#061018;font-weight:650;cursor:pointer}.btn.secondary{background:transparent;color:var(--text);border:1px solid var(--border)}.btn:disabled{opacity:.55;cursor:not-allowed}input,select,textarea{width:100%;border-radius:10px;border:1px solid var(--border);background:#0c1117;color:var(--text);padding:.7rem .8rem}label{display:block;margin:.75rem 0 .35rem;color:var(--muted);font-size:.9rem}.nav{display:flex;flex-wrap:wrap;gap:.75rem;align-items:center;margin-bottom:1.5rem}.nav .brand{font-weight:750;letter-spacing:.02em;color:var(--text);margin-right:auto}.muted{color:var(--muted)}.stack{display:grid;grid-gap:1rem;gap:1rem}.hero-title{font-size:clamp(1.8rem,4vw,2.6rem);margin:0 0 .5rem}.error{color:var(--danger)}