:root{color-scheme:light;--paper:#f6f3eb;--ink:#173d2c;--muted:#596a60;--line:#cbd4c8}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 system-ui,sans-serif}a{color:inherit;text-underline-offset:4px}a:hover{color:#456a38}button,a,summary{touch-action:manipulation}a:focus-visible,button:focus-visible,summary:focus-visible,video:focus-visible{outline:3px solid #568b39;outline-offset:4px}.skip{position:absolute;top:-100px;left:20px;padding:10px;background:white}.skip:focus{top:10px;z-index:5}header,main,footer{max-width:1320px;margin:auto;padding:24px 40px}header{display:flex;justify-content:space-between;gap:20px;align-items:center;border-bottom:1px solid var(--line)}.brand{font-size:23px;text-decoration:none;font-weight:650}.brand span{font-size:10px;letter-spacing:.16em;display:block}.intro{max-width:920px;padding:30px 0}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.18em}h1{font:clamp(36px,4.8vw,66px)/1.08 Georgia,serif;letter-spacing:-.035em;margin:20px 0}.lead{font-size:20px;max-width:740px}.notice{border-left:3px solid #97af6a;padding:14px 20px;background:#ebeede;color:#354f3d}.layout{display:grid;grid-template-columns:minmax(0,1fr) 250px;gap:28px;align-items:start}video{width:100%;display:block;background:#173d2c;border-radius:10px;border:1px solid var(--line)}#playback-status{font-size:13px;color:var(--muted)}aside nav{display:grid;gap:8px}button{font:inherit;display:flex;gap:12px;text-align:left;padding:12px;border:1px solid var(--line);border-radius:7px;background:#fffdf7;color:var(--ink);cursor:pointer}button:hover{background:#e8eddf}button span{font-variant-numeric:tabular-nums;font-size:12px;color:var(--muted)}.boundary{max-width:900px;padding:24px 0}h2{font:32px/1.2 Georgia,serif}details{border-top:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:650}ol{padding:0;list-style:none;max-width:850px}li{display:flex;gap:20px;border-bottom:1px solid var(--line);padding:12px 0}li p{margin:0}time{color:var(--muted);font-variant-numeric:tabular-nums}footer{border-top:1px solid var(--line);font-size:12px;color:var(--muted)}@media(max-width:900px){.layout{grid-template-columns:1fr}aside nav{grid-template-columns:repeat(2,minmax(0,1fr))}header,main,footer{padding:20px}.intro{padding-top:10px}}@media(max-width:520px){aside nav{grid-template-columns:1fr}.lead{font-size:18px}header>a:last-child{font-size:12px}h1{font-size:39px}.notice{padding:12px 14px}}