:root{--bg:#f7f6f2;--ink:#1a1a1a;--muted:#5a5a5a;--line:#e0ddd5;--accent:#1f4f8b;--accent-soft:#e9eef6;--good:#2d6a4f;--bad:#b23a3a}*{box-sizing:border-box;margin:0;padding:0}body,html{background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Inter,system-ui,sans-serif;font-size:17px;line-height:1.6;-webkit-font-smoothing:antialiased}main{max-width:720px;margin:0 auto;padding:48px 24px 96px}header.brand{border-bottom:1px solid var(--line);padding:20px 24px;background:#fff}header.brand .inner{max-width:720px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;font-size:14px}header.brand strong{font-weight:600;letter-spacing:.02em}header.brand span{color:var(--muted)}h1{font-size:32px;letter-spacing:-.01em;line-height:1.2;margin-bottom:16px}h1,h2{font-weight:600}h2{font-size:22px;margin:40px 0 12px;letter-spacing:-.005em}h3{font-size:17px;font-weight:600;margin:24px 0 8px}p{margin-bottom:14px}ol,ul{margin:12px 0 16px 24px}li{margin-bottom:6px}a{color:var(--accent);text-decoration:underline;text-underline-offset:2px}.lede{font-size:18px;color:var(--muted);margin-bottom:32px}.section{border-top:1px solid var(--line);padding-top:32px;margin-top:40px}.section .module-tag{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);font-weight:600;margin-bottom:8px}.callout{background:var(--accent-soft);border-left:3px solid var(--accent);padding:16px 20px;margin:20px 0;font-size:15px}.callout strong{display:block;margin-bottom:4px;color:var(--accent)}.field{margin-bottom:18px}.field label{display:block;font-size:14px;font-weight:500;margin-bottom:6px}.field input[type=email],.field input[type=text]{width:100%;min-height:44px;padding:10px 12px;border:1px solid var(--line);border-radius:4px;font-size:16px;font-family:inherit;background:#fff}.field input:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:var(--accent)}.checkbox-row{display:flex;align-items:flex-start;gap:10px;padding:12px 0}.checkbox-row input[type=checkbox]{width:20px;height:20px;margin-top:2px;accent-color:var(--accent);flex-shrink:0;cursor:pointer}.checkbox-row label{font-size:15px;cursor:pointer}button.primary{background:var(--accent);color:#fff;border:none;padding:14px 24px;font-size:16px;font-weight:500;border-radius:4px;cursor:pointer;min-height:44px;font-family:inherit;transition:background .15s}button.primary:hover{background:#163a68}button.primary:disabled{background:#aab2bd;cursor:not-allowed}.quiz-q{border-top:1px solid var(--line);padding:20px 0}.quiz-q .q-text{font-weight:500;margin-bottom:12px}.quiz-q .options label{display:flex;gap:10px;align-items:flex-start;padding:8px 10px;border-radius:4px;cursor:pointer;font-size:15px}.quiz-q .options label:hover{background:#efece5}.quiz-q .options input{margin-top:4px;accent-color:var(--accent)}.cert{background:#fff;border:1px solid var(--line);padding:40px;margin-top:24px;text-align:center}.cert .seal{font-size:12px;text-transform:uppercase;letter-spacing:.1em;color:var(--accent);font-weight:600}.cert h2{font-size:24px;margin:12px 0 24px;border:none;padding:0}.cert .name{font-size:28px;font-weight:600;margin:8px 0}.cert .meta{color:var(--muted);font-size:14px;margin-top:24px;font-family:ui-monospace,SF Mono,Menlo,monospace}.error{color:var(--bad);font-size:14px;margin-top:8px}.progress-bar{position:-webkit-sticky;position:sticky;top:0;height:3px;background:var(--line);z-index:10}.progress-bar>div{height:100%;background:var(--accent);transition:width .2s}footer.foot{border-top:1px solid var(--line);margin-top:64px;padding:32px 24px;text-align:center;font-size:13px}footer.foot,footer.foot a{color:var(--muted)}@media (max-width:600px){main{padding:32px 20px 80px}h1{font-size:26px}h2{font-size:20px}}