:root{--bg:#f4f6f9;--card:#fff;--text:#1c2733;--muted:#6b7a8c;--primary:#0b6e4f;--primary-dark:#07523b;--accent:#d8b324;--correct:#d8f3dc;--correct-text:#1b6b3a;--wrong:#fde2e2;--wrong-text:#a13030;--border:#e1e6ec}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Segoe UI,system-ui,-apple-system,sans-serif}.container{max-width:1240px;margin:0 auto;padding:0 16px}.main{padding-top:24px;padding-bottom:60px}.topbar{background:var(--primary);color:#fff}.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:56px}.brand{color:#fff;text-decoration:none;font-weight:700;font-size:1.1rem}.nav{display:flex;gap:4px}.nav a{color:#d6e9e1;text-decoration:none;padding:8px 14px;border-radius:6px;font-weight:500}.nav a.router-link-active,.nav a:hover{background:var(--primary-dark);color:#fff}.card{background:var(--card);border:1px solid var(--border);border-radius:10px;padding:20px}h1{font-size:1.5rem;margin:0 0 16px}h2{font-size:1.15rem;margin:24px 0 10px}table{border-collapse:collapse;width:100%}td,th{padding:8px 10px;text-align:left;border-bottom:1px solid var(--border)}th{color:var(--muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.04em}.btn{display:inline-block;background:var(--primary);color:#fff;border:none;border-radius:6px;padding:8px 16px;font-size:.95rem;font-weight:600;cursor:pointer}.btn:hover{background:var(--primary-dark)}.btn:disabled{opacity:.6;cursor:wait}.btn-secondary{background:#fff;color:var(--primary);border:1px solid var(--primary)}.btn-secondary:hover{background:#eef6f2}.muted{color:var(--muted)}