:root{--bg:#F6FAFF;--card:#FFFFFF;--text:#0B1320;--muted:#5A6B82;--border:rgba(10,30,60,0.12);--shadow:0 10px 30px rgba(10,30,60,0.08);--primary:#0D3B66;--accent:#08A6FF;--success:#1A8F5B;--danger:#C0392B;--warning:#D69E2E;--radius:18px}*{box-sizing:border-box}body,html{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}a{color:inherit;text-decoration:none}.container{max-width:980px;margin:0 auto;padding:16px}.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.row{display:flex;align-items:center;gap:12px}.muted{color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:var(--card);cursor:pointer;font-weight:600}.btn:active{transform:translateY(1px)}.btnPrimary{background:linear-gradient(135deg,var(--primary),#0B2E4F)}.btnAccent,.btnPrimary{color:#fff;border-color:transparent}.btnAccent{background:linear-gradient(135deg,var(--accent),#0077B6)}.btnDanger{background:#fff;color:var(--danger);border-color:rgba(192,57,43,.35)}.input{width:100%;padding:12px 14px;border-radius:14px;border:1px solid var(--border);background:#fff;outline:none;font-size:16px}.input:focus{border-color:rgba(8,166,255,.6);box-shadow:0 0 0 4px rgba(8,166,255,.15)}.grid{display:grid;grid-gap:12px;gap:12px}@media (min-width:760px){.gridCols2{grid-template-columns:1fr 1fr}}.kbd{font-family:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,Liberation Mono,Courier New,monospace;border:1px solid var(--border);background:rgba(255,255,255,.7);padding:2px 6px;border-radius:8px;font-size:12px}hr.sep{border:none;border-top:1px solid var(--border);margin:12px 0}small{color:var(--muted)}