:root { --bg:#0b0f14; --fg:#e6edf3; --muted:#9aa4af; --card:#11171f; --accent:#4ea1ff; --border:#1b232e; }
*{box-sizing:border-box} html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.container{max-width:980px;margin:32px auto;padding:0 16px}
h1{margin:0 0 8px;font-size:28px} h3{margin:0 0 10px}
.muted{color:var(--muted);font-size:14px}
form{margin:16px 0;display:flex;gap:12px;align-items:center}
input[type="file"]{background:var(--card);border:1px solid var(--border);padding:10px;border-radius:8px;color:var(--fg)}
button{background:var(--accent);color:#00152b;border:0;padding:10px 14px;border-radius:8px;cursor:pointer;font-weight:600}
hr{border:0;border-top:1px solid var(--border);margin:24px 0}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px;margin:12px 0 20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:14px}
.kv{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px dashed var(--border)}
.kv:last-child{border-bottom:0}
.score{font-size:36px;font-weight:700}
table{width:100%;border-collapse:collapse} th,td{padding:8px 6px;border-bottom:1px solid var(--border);text-align:left}
.back{text-decoration:none;color:var(--accent);display:inline-block;margin-bottom:8px}
.hint{color:var(--muted);font-size:12px}