:root{--bg:#07090b;--panel:#0d1114;--ink:#e8e2d3;--muted:#929a98;--orange:#e36f35;--cyan:#70c7c4;--line:#293034;--yellow:#e2c75d}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;line-height:1.55}.top{position:sticky;top:0;z-index:10;background:rgba(7,9,11,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;padding:14px max(18px,4vw)}a{color:inherit}.brand{text-decoration:none;display:flex;gap:12px;align-items:baseline}.brand span{font-weight:900;letter-spacing:.06em}.brand small,.kicker{color:var(--orange);letter-spacing:.12em;font-size:11px}.top nav{display:flex;gap:20px;font-size:11px}.top nav a{text-decoration:none;color:var(--muted)}.top nav a:hover,.top nav .active{color:var(--ink)}main{max-width:1180px;margin:auto}.hero{padding:12vh 5vw 10vh;max-width:960px}.hero h1{font-family:Georgia,serif;font-weight:400;font-size:clamp(48px,9vw,110px);line-height:.88;letter-spacing:-.05em;margin:.25em 0}.lede{font-size:clamp(18px,2.1vw,26px);max-width:850px;color:#d5d0c5}.hero p:not(.lede){max-width:760px;color:var(--muted)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}.button{display:inline-block;border:1px solid var(--orange);background:var(--orange);color:#100b08;padding:12px 15px;text-decoration:none;font-weight:800;font-size:12px}.button.ghost{background:transparent;color:var(--ink);border-color:var(--line)}.note{margin:0 5vw 8vh;padding:18px;border-left:3px solid var(--yellow);background:#11130f;color:#bfc1b6;font-size:13px}.note strong{color:var(--yellow)}.chapter{display:grid;grid-template-columns:110px 1fr;gap:30px;padding:9vh 5vw;border-top:1px solid var(--line)}.chapter.dark{background:var(--panel)}.num{font-size:54px;color:#32383b;font-weight:900;line-height:1}.chapter h2,.museum h2,.lab h2{font-family:Georgia,serif;font-weight:400;font-size:clamp(34px,5vw,65px);line-height:1;margin:.18em 0 .45em}.chapter p{max-width:760px;color:#b8bfbd}.chapter blockquote{margin:35px 0;padding-left:20px;border-left:2px solid var(--orange);font-family:Georgia,serif;font-size:clamp(24px,3.5vw,42px);line-height:1.15;max-width:850px}.chapter code{color:var(--cyan)}.museum,.lab{padding:10vh 5vw;border-top:1px solid var(--line)}.museum>p,.lab>p{color:var(--muted);max-width:720px}.builds{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);margin-top:35px}.build{background:#0b0e10;padding:22px;min-height:220px;display:flex;flex-direction:column}.build .v{color:var(--orange);font-size:11px}.build h3{font-size:18px;margin:10px 0}.build p{font-size:12px;color:var(--muted);flex:1}.build a{text-decoration:none;color:var(--cyan);font-size:12px;font-weight:bold}.build a:hover{color:white}.lab{background:#0b0d0e}.lablinks{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));border-top:1px solid var(--line);margin-top:35px}.lablinks a{padding:14px 0;border-bottom:1px solid var(--line);color:#b8bfbd;text-decoration:none;font-size:12px}.lablinks a:hover{color:var(--orange)}.final{background:#11100d}footer{border-top:1px solid var(--line);padding:25px max(18px,4vw);display:flex;justify-content:space-between;color:#697273;font-size:11px}footer a{color:var(--orange);text-decoration:none}@media(max-width:700px){.top{position:relative;align-items:flex-start}.top nav{display:grid;grid-template-columns:1fr 1fr;gap:7px 14px}.brand small{display:none}.chapter{grid-template-columns:1fr;gap:10px}.num{font-size:26px}.hero{padding-top:9vh}.top nav a{font-size:9px}footer{gap:15px;flex-direction:column}}

.conversation{margin-top:34px;border:1px solid var(--line);background:#080b0d}.conversation summary{cursor:pointer;padding:14px 16px;color:var(--cyan);font-size:11px;font-weight:800;letter-spacing:.08em;list-style:none;display:flex;justify-content:space-between}.conversation summary::-webkit-details-marker{display:none}.conversation summary span{color:#657072;font-weight:400}.conversation[open] summary{border-bottom:1px solid var(--line)}.conversation-body{max-height:72vh;overflow:auto;padding:10px}.transcript{padding:0 5vw 12vh}.turn{display:grid;grid-template-columns:110px minmax(0,800px);gap:20px;padding:28px 0;border-top:1px solid var(--line)}.turn.compact{grid-template-columns:80px minmax(0,720px);padding:18px 8px}.turn.user .who{color:var(--orange)}.turn.assistant .who{color:var(--cyan)}.who{font-size:10px;font-weight:900;letter-spacing:.1em;padding-top:5px}.turnbody p{margin:0 0 1em;color:#c0c5c1}.turnbody h4{font-family:Georgia,serif;font-size:22px;margin:1.1em 0 .5em}.turnbody pre{overflow:auto;background:#030405;border:1px solid var(--line);padding:12px;color:#bdc7c3}.turnbody blockquote{font-family:inherit;font-size:13px;margin:14px 0;border-left:2px solid #394247;padding-left:12px;color:#aeb7b4}.turnbody .bullet{margin:.25em 0}.attachment{color:var(--yellow)!important}.transcript-hero{padding-bottom:6vh}.closing{font-weight:900;color:var(--ink)!important;letter-spacing:.06em;margin-top:45px}.quiet{font-family:Georgia,serif;font-style:italic}.note code{color:var(--cyan)}@media(max-width:700px){.turn,.turn.compact{grid-template-columns:1fr;gap:5px}.conversation-body{max-height:68vh}.who{padding-top:0}.top nav{grid-template-columns:1fr 1fr}}