:root{--bg:#eef3f7;--surface:#fff;--text:#1d2a36;--muted:#667788;--primary:#123d63;--primary2:#1d5d8f;--border:#d5e0e8;--ok:#1d7a46;--bad:#a52b2b;--warn:#9a6700}
*{box-sizing:border-box}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--text);line-height:1.5}
.wrap{max-width:1100px;margin:auto;padding:0 20px}.topbar{background:linear-gradient(135deg,#102f4b,#1b5d87);color:#fff}
.topbar-inner{min-height:72px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{color:#fff;text-decoration:none;font-size:1.35rem;font-weight:900}
nav{display:flex;gap:16px;flex-wrap:wrap}nav a{color:#fff;text-decoration:none;font-weight:750}.notice{margin:24px 0;background:#fff5d8;border-left:5px solid #d4a017;padding:15px;border-radius:10px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:24px;margin:20px 0;box-shadow:0 14px 38px rgba(20,50,75,.09)}
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.tile{display:block;text-decoration:none;color:inherit;background:#f7fafc;border:1px solid var(--border);border-radius:14px;padding:20px}.tile:hover{border-color:#8ca9bd;transform:translateY(-1px)}
label{display:grid;gap:7px;font-weight:750;margin-bottom:14px}input,select,textarea{width:100%;padding:12px;border:1px solid var(--border);border-radius:9px;font:inherit}
.btn{display:inline-block;border:0;border-radius:9px;padding:11px 16px;font-weight:800;cursor:pointer;text-decoration:none}.btn-primary{background:var(--primary);color:#fff}.btn-secondary{background:#dce9f3;color:var(--primary)}.btn-danger{background:#f7dede;color:#7f1d1d}
.badge{display:inline-block;border-radius:999px;padding:5px 10px;background:#e7eef4;color:#294a65;font-weight:800;font-size:.85rem}.muted{color:var(--muted)}
table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:11px;border-bottom:1px solid var(--border);vertical-align:top}
.answer{display:flex;gap:12px;border:2px solid var(--border);padding:14px;border-radius:11px;margin:10px 0;background:#fff}.answer input{width:auto;margin-top:5px}
.answer.correct{border-color:var(--ok);background:#eaf7ef}.answer.wrong{border-color:var(--bad);background:#fdeeee}.answer.missed{border-color:#c28a00;background:#fff6dc}
.feedback{padding:15px;border-radius:10px;margin-top:18px}.feedback.ok{background:#eaf7ef;border-left:5px solid var(--ok)}.feedback.bad{background:#fdeeee;border-left:5px solid var(--bad)}
.footer{text-align:center;color:var(--muted);padding:30px}.error{background:#fdeeee;color:#7f1d1d;padding:12px;border-radius:9px}.success{background:#eaf7ef;color:#14532d;padding:12px;border-radius:9px}
@media(max-width:760px){.topbar-inner{align-items:flex-start;flex-direction:column;padding-top:16px;padding-bottom:16px}.grid,.grid-2{grid-template-columns:1fr}table{display:block;overflow:auto}}