:root{color-scheme:dark;--bg:#0b0b0f;--card:#16161d;--border:#2a2a35;--text:#ececf1;--muted:#9a9aa5;--accent:#d92b2b;--accent-dark:#a71f1f;--ok:#8fdc8f;--err:#ff7b7b}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:15px/1.5 system-ui,-apple-system,Segoe UI,sans-serif}a{color:#7fb2ff;text-decoration:none}a:hover{text-decoration:underline}main{padding:16px}main,nav.topbar{max-width:860px;margin:0 auto}nav.topbar{display:flex;align-items:center;gap:18px;padding:12px 16px;border-bottom:1px solid var(--border)}nav.topbar .brand{font-weight:800;font-size:18px;color:var(--text)}nav.topbar .spacer{flex:1 1}.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px;margin:14px 0}h1{font-size:24px;margin:16px 0 4px}h2{font-size:18px;margin:0 0 10px}.muted{color:var(--muted);font-size:13px}.err{color:var(--err)}.err,.ok{font-size:14px}.ok{color:var(--ok)}label{display:block;font-size:12px;color:var(--muted);margin:10px 0 4px}input,select,textarea{width:100%;padding:10px;border-radius:8px;border:1px solid #34343f;background:#0f0f14;color:var(--text);font-size:15px}textarea{font-family:ui-monospace,monospace;font-size:13px}button{border:0;border-radius:10px;padding:12px 18px;font-size:15px;font-weight:700;color:#fff;background:var(--accent);cursor:pointer;margin-top:12px}button:active{background:var(--accent-dark)}button:disabled{opacity:.5;cursor:default}button.secondary{background:#2a4a72}button.ghost{background:transparent;border:1px solid var(--border)}table{width:100%;border-collapse:collapse;margin-top:8px}td,th{text-align:left;padding:8px 10px;border-bottom:1px solid var(--border);font-size:14px}th{color:var(--muted);font-weight:600;font-size:12px}code{background:#0f0f14;padding:2px 6px;border-radius:6px;color:#ffd479}.row{display:flex;gap:12px;flex-wrap:wrap;align-items:end}.row>div{flex:1 1 140px}.iv-grid{display:grid;grid-template-columns:repeat(4,1fr);grid-gap:8px;gap:8px;margin-top:12px}.iv-grid button{margin:0;padding:14px 8px}.iv-hold{background:#8a6d1a}.iv-stop{background:#7a2020}.iv-blackout{background:#222;border:1px solid #555}.iv-skip{background:#2a4a72}