*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial}
:root{ --bg:#fff; --ink:#111827; --sub:#6b7280; --brand:#0f2f5f; --card:#f7f8fa; --accent:#2563eb; --ok:#1a7f37; --bad:#b00020; --radius:16px; }
body{background:var(--bg);color:var(--ink)}
.container{padding:16px 16px 84px}
.topbar{position:sticky;top:0;background:var(--brand);color:#fff;display:flex;justify-content:space-between;align-items:center;padding:14px 16px}
.topbar__title{font-weight:700}
.card{background:var(--card);border-radius:var(--radius);padding:14px;margin:10px 0;border:1px solid #e5e7eb}
.row{display:flex;gap:10px;flex-wrap:wrap}
.btn{display:inline-block;border:1px solid #111;border-radius:999px;background:#fff;padding:10px 14px;text-decoration:none;color:var(--ink);cursor:pointer}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}
.badge{display:inline-flex;align-items:center;gap:6px;border:1px solid #111;border-radius:999px;padding:6px 10px;background:#fff}
.kpi{font-size:34px;font-weight:800}
.banner{background:#dbeafe;border:1px solid #bfdbfe;border-radius:var(--radius);padding:12px}
.tabbar{position:fixed;left:0;right:0;bottom:0;background:#fff;border-top:1px solid #e5e7eb;display:flex;justify-content:space-around;padding:8px 0}
.tablink{color:var(--ink);text-decoration:none;padding:8px 10px;border-radius:12px}
.label{display:inline-block;background:#eef2f7;border:1px solid #e5e7eb;border-radius:999px;padding:6px 10px;margin:4px 6px 0 0}
.input,select,textarea{width:100%;padding:10px;border:1px solid #d1d5db;border-radius:12px}
.option{border:1px solid #d1d5db;border-radius:12px;padding:10px;margin:8px 0;cursor:pointer;background:#fff}
.option.correct{border-color:var(--ok);background:#e8f5ec}
.option.wrong{border-color:var(--bad);background:#fde8eb}
.table{width:100%;border-collapse:collapse}
.table th,.table td{padding:10px;border-bottom:1px solid #e5e7eb;text-align:left}
.toast{position:fixed;bottom:72px;left:50%;transform:translateX(-50%);background:#111;color:#fff;padding:10px 14px;border-radius:999px}
@media(min-width:720px){ .container{padding:24px 24px 84px} }