:root{color-scheme:light;--ink:#183f33;--muted:#52675b;--paper:#f4f6f0;--line:#d7dfd3}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:17px/1.6 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-underline-offset:.2em}header,main,footer{width:min(1200px,calc(100% - 40px));margin:auto}header{padding:28px 0;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:9px;font-size:27px;font-weight:750;text-decoration:none}.brand img{width:35px;height:35px}header>a:last-child{font-size:14px}.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:750;color:var(--muted);margin:20px 0 9px}h1{font-size:clamp(30px,5vw,50px);line-height:1.1;letter-spacing:-.045em;margin:0 0 18px}h2{font-size:23px;margin:0 0 12px}.intro{max-width:860px;color:var(--muted);margin-bottom:24px}.player{background:#102e26;border:1px solid var(--line);border-radius:17px;overflow:hidden}video{display:block;width:100%;aspect-ratio:16/9}.links{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 30px}.links a{border:1px solid var(--line);padding:9px 16px;border-radius:8px;background:white;text-decoration:none;font-size:14px;font-weight:650}.notes{background:#e8efdf;border-radius:12px;padding:20px 24px;margin:25px 0}.notes p{margin:0}.chapters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;list-style:none;padding:0}.chapters button{display:flex;gap:13px;align-items:baseline;text-align:left;width:100%;padding:12px 14px;background:white;border:1px solid var(--line);border-radius:8px;color:var(--ink);font:inherit;font-size:14px;cursor:pointer}.chapters button:hover{background:#edf3e7}.chapters time{font-variant-numeric:tabular-nums;color:var(--muted);font-size:13px;min-width:42px}details{border-top:1px solid var(--line);margin:32px 0;padding-top:20px}summary{cursor:pointer;font-size:20px;font-weight:650}.transcript{max-width:870px}.transcript h3{font-size:17px;margin:25px 0 5px}.transcript p{margin:0;color:var(--muted)}footer{border-top:1px solid var(--line);padding:25px 0 35px;color:var(--muted);font-size:13px}footer a{margin-right:16px}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #78a355;outline-offset:4px}@media(max-width:650px){header,main,footer{width:calc(100% - 28px)}header{padding:20px 0}.chapters{grid-template-columns:1fr}.notes{padding:17px}.links a{flex:1;text-align:center}.intro{font-size:15px}}

.testing-guide{background:white;border:1px solid var(--line);border-radius:12px;padding:22px 24px;margin:28px 0}.testing-guide p{color:var(--muted)}.testing-guide li{margin:10px 0}.mapping-guide{overflow-x:auto}.mapping-guide table{border-collapse:collapse;width:100%;max-width:760px;font-size:15px}.mapping-guide caption{text-align:left;font-weight:650;margin:10px 0}.mapping-guide th,.mapping-guide td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--line)}@media(max-width:650px){.testing-guide{padding:17px}.testing-guide ol{padding-left:22px}}