:root{color-scheme:light;--navy:#112b49;--ink:#192d43;--muted:#5e6d7b;--paper:#f3f0e8;--line:#d8dfe4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:'Noto Sans Thai',Tahoma,sans-serif;font-size:16px;line-height:1.7}header{background:#0b1e34;color:#edf1f5;padding:18px max(20px,calc((100vw - 1080px)/2));display:flex;align-items:center;justify-content:space-between;gap:12px}header a{color:inherit;text-decoration:none;font-weight:700;white-space:nowrap}header a span{font-size:12px;margin-left:16px;font-weight:400;color:#c1cfdf}.pill{font-size:12px;border:1px solid #8297ae;padding:4px 12px;border-radius:20px;white-space:nowrap}main{max-width:1080px;margin:auto;padding:28px 24px}.banner{overflow:hidden;border-radius:10px;box-shadow:0 12px 30px #152c4818}.banner img{width:100%;display:block}.intro{padding:36px 0 24px}.eyebrow,.section-label{font-size:12px;color:#5e7590;letter-spacing:1.5px;font-weight:700}h1{font-size:clamp(28px,4vw,42px);line-height:1.5;margin:10px 0 16px}h1 em{font-style:normal;color:#476482}h2{font-size:26px;line-height:1.5;margin:8px 0 10px}p{margin:8px 0}.notice{padding:16px 20px;background:#e5ebf1;border:1px solid #cbd6e1;border-left:4px solid #577494;border-radius:6px;font-size:14px}.notice p{margin-bottom:0}.steps{list-style:none;display:flex;padding:24px 0;margin:0;gap:16px;border-bottom:1px solid var(--line)}.steps li{flex:1;color:#718297;font-weight:600;display:flex;gap:10px}.steps li[aria-current=step]{color:var(--navy)}.card{margin:28px 0;background:#fff;padding:32px;border:1px solid var(--line);border-radius:12px;box-shadow:0 10px 32px #142b4210}.muted,small{color:var(--muted);font-size:14px}small{display:block;margin-top:4px}.grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}form{margin-top:24px}label{display:block;font-weight:600;font-size:15px;margin-bottom:18px}input:not([type=checkbox]):not([type=radio]),textarea{width:100%;display:block;border:1px solid #bdc9d4;border-radius:7px;background:#fbfcfd;padding:12px;font:inherit;color:var(--ink);margin-top:8px;min-width:0}textarea{resize:vertical}input:focus,textarea:focus,button:focus-visible,a:focus-visible{outline:3px solid #8caac8;outline-offset:3px}.checks{padding:18px 0;border-top:1px solid var(--line);margin-top:24px}.checks label{display:flex;align-items:flex-start;gap:10px;font-weight:400}.checks input{margin:6px 0 0;width:18px;height:18px;accent-color:var(--navy);flex:none}button{font:inherit;cursor:pointer;border:0}.primary{background:var(--navy);color:white;padding:14px 24px;border-radius:7px;font-weight:600;min-height:48px}.primary:hover{background:#234768}.primary:disabled{opacity:.5;cursor:not-allowed}.exam-top{display:flex;justify-content:space-between;align-items:center;gap:16px}progress{width:100%;height:8px;accent-color:var(--navy)}fieldset{border:0;padding:24px 0;margin:0;border-bottom:1px solid var(--line)}legend{float:left;width:100%;font-weight:600;font-size:17px;padding:0 0 12px}.answers{clear:both;display:grid;gap:9px}.answer{display:flex;align-items:flex-start;gap:12px;border:1px solid var(--line);border-radius:8px;padding:12px 14px;margin:0;font-weight:400;cursor:pointer}.answer:has(input:checked){border-color:#456687;background:#eaf0f6}.answer input{flex:none;margin:6px 0 0;accent-color:var(--navy)}#submit-exam{margin-top:28px}.score{font-size:54px;color:var(--navy);font-weight:700;line-height:1.4}.topic{display:flex;justify-content:space-between;border-bottom:1px solid var(--line);padding:12px 0;gap:16px}#topics{margin:22px 0}#result-panel .notice{margin-bottom:24px}#error{background:#fff0eb;color:#85351c;border:1px solid #d6aaa0;padding:14px;border-radius:6px}footer{text-align:center;font-size:12px;color:var(--muted);padding:24px 0}[hidden]{display:none!important}@media(max-width:600px){header{padding:14px 16px}header a span{display:none}main{padding:18px 16px}.intro{padding-top:26px}.card{padding:22px 18px}.grid{grid-template-columns:1fr;gap:0}.steps{gap:8px}.steps li{font-size:12px;display:block}.steps li span{display:block}.primary{width:100%}.notice{padding:14px}.exam-top{align-items:flex-start}.exam-top p{white-space:nowrap}legend{font-size:16px}.topic{font-size:14px}h2{font-size:23px}}