:root{--primary:#143b63;--primary-2:#1d5f8f;--accent:#19a7a8;--bg:#f4f7fb;--surface:#fff;--text:#172231;--muted:#667085;--border:#dfe5ec;--danger:#c62828;--success:#067647;--shadow:0 10px 30px rgba(16,24,40,.07);--radius:16px}
*{box-sizing:border-box}html{font-size:16px}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;line-height:1.55}a{color:var(--primary-2)}.top{min-height:68px;background:#fff;border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 clamp(16px,4vw,56px);position:sticky;top:0;z-index:100}.brand{font-size:24px;font-weight:850;color:var(--primary);text-decoration:none}.top nav{display:flex;gap:6px;align-items:center;flex-wrap:wrap}.top nav a{color:#344054;text-decoration:none;padding:9px 10px;border-radius:8px;font-weight:600}.top nav a:hover{background:#f2f4f7}.container{width:min(1160px,calc(100% - 32px));margin:34px auto}.hero{background:linear-gradient(135deg,var(--primary),#0c7180);color:#fff;border-radius:24px;padding:clamp(28px,5vw,58px);box-shadow:var(--shadow);margin-bottom:24px}.hero h1{margin:0 0 12px;font-size:clamp(32px,5vw,48px);line-height:1.08}.hero p{color:#ffffffdf}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:clamp(18px,3vw,28px);box-shadow:var(--shadow);margin-bottom:20px}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px}.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}h1,h2,h3{color:var(--primary);letter-spacing:-.015em}.muted{color:var(--muted)}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:44px;padding:10px 16px;border:0;border-radius:10px;background:var(--primary)!important;color:#fff!important;font-weight:750;cursor:pointer;text-decoration:none;box-shadow:0 1px 2px #00000010}.btn:hover{filter:brightness(.96);text-decoration:none}.btn.secondary{background:#eef3f8!important;color:var(--primary)!important}.btn.danger{background:var(--danger)!important}.actions{display:flex;flex-wrap:wrap;gap:7px;align-items:center}.form-card{max-width:960px}.field{margin-bottom:16px}.card>form label,.field label{display:block;font-weight:700;color:#344054;margin:0 0 6px}input,select,textarea,.input{width:100%;min-height:44px;padding:11px 13px;border:1px solid #cfd7e2;border-radius:10px;background:#fff;color:var(--text);font:inherit;outline:none}textarea{min-height:130px;resize:vertical}input:focus,select:focus,textarea:focus{border-color:var(--accent);box-shadow:0 0 0 3px #19a7a824}.alert{padding:13px 15px;border-radius:10px;margin-bottom:18px}.alert.error{background:#fff1f1;color:#9b1c1c;border:1px solid #fecaca}.alert.success{background:#ecfdf3;color:#05603a;border:1px solid #b7ebcf}.tablewrap{overflow-x:auto;border:1px solid var(--border);border-radius:12px}.table{width:100%;min-width:780px;border-collapse:collapse}.table th{background:#f8fafc;color:#475467;font-size:13px;text-transform:uppercase;letter-spacing:.04em}.table th,.table td{padding:13px 14px;border-bottom:1px solid #edf0f3;text-align:left;vertical-align:top}.table tr:last-child td{border-bottom:0}.table tr:hover td{background:#fcfdff}.pill{display:inline-flex;padding:5px 9px;border-radius:999px;background:#eef3f8;color:var(--primary);font-weight:700;font-size:13px}.stat{font-size:32px;font-weight:850}.question{font-size:20px;font-weight:750}.option{display:flex;gap:10px;align-items:flex-start;padding:13px;border:1px solid #d7dee7;border-radius:10px;margin:10px 0;cursor:pointer;background:#fff}.option:hover{border-color:var(--accent);background:#eefafa}.timer{font-weight:850;color:var(--danger);font-variant-numeric:tabular-nums}.testbar{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 20px;background:#fff;border-bottom:1px solid var(--border);position:sticky;top:68px;z-index:90}.passage{background:#fafbfd;border:1px solid var(--border);border-radius:12px;padding:18px;line-height:1.75}.two{display:grid;grid-template-columns:2fr 1fr;gap:20px}footer{text-align:center;color:var(--muted);padding:44px 18px}@media(max-width:860px){.grid-2,.two{grid-template-columns:1fr}.container{width:min(100% - 24px,1160px);margin:24px auto}}@media(max-width:640px){.top{min-height:60px;padding:0 12px}.brand{font-size:20px}.top nav a{padding:7px 6px;font-size:13px}.hero{border-radius:16px;padding:28px 20px}.card{border-radius:14px;padding:17px}.actions{display:grid;grid-template-columns:1fr}.actions .btn,.actions form,.actions form .btn{width:100%}.btn{min-height:46px}.testbar{top:60px;padding:10px 12px}.question{font-size:18px}}

.btn:disabled{opacity:.45;cursor:not-allowed;transform:none!important;filter:none!important}

.choice-row{grid-template-columns:36px minmax(0,1fr) 120px;background:#f8fafc;border:1px solid #e4e9ef;border-radius:12px;padding:10px;margin:9px 0}.choice-number{font-weight:800;color:#143b63;text-align:center}.correct-toggle{display:flex;align-items:center;gap:7px;font-weight:650;white-space:nowrap}.correct-toggle input{accent-color:#19a7a8}.media-help{padding:16px;border:1px solid #dfe5ec;background:#f8fafc;border-radius:12px;margin:16px 0}.page-head{display:flex;justify-content:space-between;gap:18px;align-items:flex-start}
@media(max-width:700px){.choice-row{grid-template-columns:30px minmax(0,1fr)}.correct-toggle{grid-column:2}.page-head{flex-direction:column}.page-head .btn{width:100%}}

.test-actions .btn{min-width:150px}.resume .btn{min-width:150px}