:root{color-scheme:light;--paper:#f8f7f3;--ink:#20302e;--muted:#60716b;--line:#dce2da;--accent:#166354;--soft:#eaf2e9;--nav:#18352e;--footer:160px}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,select{font:inherit}button,summary,select,input[type=checkbox],input[type=range]{cursor:pointer}button:disabled{opacity:.35;cursor:default}button:focus-visible,a:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #df9b42;outline-offset:4px}a{color:var(--accent)}button{border:1px solid var(--line);border-radius:9px;padding:8px 13px;color:var(--ink);background:white}button:hover:not(:disabled){background:var(--soft)}.sidebar{position:fixed;inset:0 auto var(--footer) 0;width:290px;padding:30px 25px;background:var(--nav);color:#edf3eb;overflow:auto}.brand{display:flex;gap:11px;align-items:center;font-weight:650;letter-spacing:.02em}.brand-icon{font-size:30px;color:#b7d1a3}.sidebar-label{font-size:10px;letter-spacing:.18em;font-weight:700;color:#acbeb1;margin-top:35px}.sidebar h1{font-family:Georgia,serif;font-size:28px;font-weight:500;line-height:1.25;margin:14px 0}.sidebar p{font-size:13px;color:#bdcdc1}.chapter-label{display:flex;justify-content:space-between;margin-bottom:12px}#chapters{display:grid;gap:9px}.chapter-button{display:flex;gap:12px;text-align:left;padding:14px 11px;border:1px solid transparent;background:transparent;color:#dae6dc;width:100%;line-height:1.4}.chapter-button:hover:not(:disabled){background:#28483d}.chapter-button[aria-current=true]{background:#e6efdd;color:#193a2f;border-color:#b7d1a3}.chapter-number{font-size:12px;opacity:.7;padding-top:3px}.chapter-button strong{font-size:14px;font-weight:600;display:block}.chapter-button small{display:block;font-size:11px;opacity:.75;margin-top:6px}.session-progress{margin-top:30px}.session-progress>div{display:flex;justify-content:space-between;font-size:11px;color:#c5d6c8}.session-progress p{font-size:11px;margin-top:7px}progress{display:block;width:100%;height:5px;margin-top:12px;accent-color:#b7d1a3;border:0;border-radius:10px}progress::-webkit-progress-bar{background:#436052;border-radius:10px}progress::-webkit-progress-value{background:#b7d1a3;border-radius:10px}.session-note{font-size:12px;border-top:1px solid #456053;padding-top:15px;margin-top:25px}.session-note summary{color:#c5d6c8}.session-note p{font-size:12px}main{margin-left:290px;padding:42px clamp(26px,5vw,85px) calc(var( -  - footer)+40px);max-width:1350px}.eyebrow{font-size:11px;letter-spacing:.14em;font-weight:750;color:var(--accent)}.chapter-meta{float:right;color:var(--muted);font-size:12px}.chapter-heading h2{font-family:Georgia,serif;font-size:clamp(30px,3.4vw,46px);font-weight:500;line-height:1.15;letter-spacing:-.025em;margin:18px 0}.chapter-heading>p{font-size:17px;color:var(--muted);max-width:800px}.takeaway{background:var(--soft);border-left:3px solid var(--accent);padding:20px 25px;border-radius:0 12px 12px 0;margin:28px 0}.takeaway p{margin:7px 0 0;font-size:19px;line-height:1.5}.visual{margin:28px 0}.visual h3,.reading h3,.sources h3{font-size:16px;font-weight:650;margin:0 0 13px}.steps{display:grid;gap:12px;list-style:none;padding:0;counter-reset:step}.step{display:grid;grid-template-columns:32px 1fr;gap:14px;background:white;border:1px solid var(--line);border-radius:12px;padding:16px 20px}.step:before{counter-increment:step;content:counter(step);width:28px;height:28px;display:grid;place-items:center;border-radius:50%;background:var(--soft);font-size:12px;color:var(--accent);font-weight:700}.step strong,.column strong{font-size:14px}.step p,.column p{font-size:14px;line-height:1.55;margin:4px 0 0;color:var(--muted)}.columns{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:15px}.column{border:1px solid var(--line);border-top:3px solid var(--accent);border-radius:10px;background:white;padding:22px}.column:nth-child(even){border-top-color:#bc7c36}.column p{white-space:pre-line}.table-wrap{overflow:auto;border:1px solid var(--line);border-radius:12px}table{border-collapse:collapse;width:100%;background:white;font-size:14px}th,td{padding:15px 20px;text-align:left;border-bottom:1px solid var(--line)}th{background:var(--soft);font-size:12px}tr:last-child td{border-bottom:0}td:last-child{color:var(--accent);font-weight:650}.reading{margin-top:32px}.reading details{border-bottom:1px solid var(--line);padding:12px 0}.reading summary{font-size:14px;font-weight:600}.reading details p{font-size:14px;color:var(--muted);white-space:pre-line}.transcript{margin-top:27px;border:1px solid var(--line);border-radius:12px;padding:18px 22px;background:#fff}.transcript summary{font-size:14px;font-weight:600}.transcript summary span{display:block;margin-left:16px;color:var(--muted);font-size:11px;font-weight:400}#transcript{font-family:Georgia,serif;font-size:18px;line-height:1.8;max-width:75ch}.sources{margin-top:30px}.sources>p,.shortcut-note{font-size:12px;color:var(--muted)}#sources{display:flex;flex-wrap:wrap;gap:8px}#sources a{display:inline-block;border:1px solid var(--line);background:white;border-radius:7px;padding:7px 11px;font-size:12px;text-decoration:none}#sources a:hover{text-decoration:underline}.shortcut-note{margin-top:30px}.player{position:fixed;inset:auto 0 0;background:#fffefb;border-top:1px solid var(--line);padding:16px 30px 18px;box-shadow:0 -6px 24px #18352e08;z-index:3;min-height:150px}.player-top{display:flex;align-items:center;gap:18px;font-size:12px}#play-state{color:var(--accent);font-weight:650;min-width:130px}#now-playing{flex:1;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#chapter-time{font-variant-numeric:tabular-nums}#seek{width:100%;height:18px;margin:10px 0 12px;accent-color:var(--accent);display:block}.transport,.buttons,.settings{display:flex;align-items:center;gap:10px}.transport{justify-content:space-between;flex-wrap:wrap}.primary{background:var(--accent);color:white;border-color:var(--accent);min-width:90px;font-weight:650}.primary:hover:not(:disabled){background:#0d493e}.settings{gap:22px;font-size:12px;color:var(--muted)}.settings label{display:flex;align-items:center;gap:6px}.settings select{border:1px solid var(--line);background:white;border-radius:6px;padding:5px}.settings input{accent-color:var(--accent)}#error{color:#9b3225;background:#fff0ea;border-radius:8px;margin:10px 0 0;padding:8px;font-size:13px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.skip-link{position:fixed;top:-100px;left:10px;z-index:5;background:white;padding:10px}.skip-link:focus{top:10px}@media(max-width:1000px){.sidebar{width:240px;padding:25px 18px}main{margin-left:240px;padding-left:28px;padding-right:28px}.settings{gap:12px}.player{padding:14px 20px}}@media(max-width:720px){.sidebar{position:relative;width:auto;inset:auto;padding:22px}.sidebar-label,.session-progress,.session-note,.sidebar #subtitle{display:none}.sidebar h1{font-size:23px}.sidebar .brand{font-size:13px}#chapters{display:flex;overflow:auto}.chapter-button{min-width:175px;width:175px}.chapter-button strong{font-size:12px}main{margin-left:0;padding:26px 20px calc(var( -  - footer)+30px)}.chapter-meta{float:none;margin-top:8px}.player-top{gap:8px}#play-state{min-width:0}#now-playing{display:none}#chapter-time{margin-left:auto}.transport{justify-content:center}.settings{width:100%;justify-content:center}.player{padding:12px 14px}.buttons{gap:6px}.buttons button{padding:7px 11px}}@media(min-width:1640px){body{max-width:1640px;margin-inline:auto}.sidebar{left:calc((100% - 1640px) / 2)}.player{left:calc((100% - 1640px) / 2);right:calc((100% - 1640px) / 2)}.skip-link{left:calc((100% - 1640px) / 2+10px)}}@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}