:root{color-scheme:dark;--bg:#101715;--surface:#18231e;--line:#2c3c32;--text:#f5f5ed;--muted:#a6b6ac;--gold:#f1ce66;--green:#8de0af;--ink:#101715;font:16px/1.6 Arial,Helvetica,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text)}[hidden]{display:none!important}button,input{font:inherit}button,a,input{outline-offset:5px}button{cursor:pointer}a{color:inherit}button:disabled{cursor:wait;opacity:.55}button{border:0}button:focus-visible,a:focus-visible,input:focus-visible{outline:2px solid var(--gold)}.brand{text-decoration:none;font-size:32px;letter-spacing:-1.5px;font-weight:900;line-height:1}.brand span{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);margin-top:11px;font-weight:500}.eyebrow{font-size:11px;font-weight:700;letter-spacing:2px;color:var(--gold)}.login-page{min-height:100vh;display:grid;grid-template-columns:1.15fr 1fr}.welcome{padding:45px 64px 20px;background:#132019;display:flex;flex-direction:column;overflow:hidden}.welcome-copy{margin:74px 0 35px}.welcome h1{font-size:clamp(36px,4vw,62px);line-height:1.1;letter-spacing:-2px;margin:20px 0}.welcome-copy p{color:var(--muted);font-size:17px;max-width:440px}.cover{width:100%;max-width:620px;display:block;border:1px solid #554d2b}.art-credit{font-size:10px;color:#819588;margin:10px 0}.login-side{display:flex;flex-direction:column;justify-content:center;align-items:center;padding:54px 60px 28px}.login-box{width:100%;max-width:390px;margin:auto 0}.login-box h2{font-size:32px;letter-spacing:-1px;line-height:1.25;margin:18px 0 10px}.login-box>p{color:var(--muted)}form{margin-top:35px}label{display:block;font-size:13px;margin:16px 0 7px;color:var(--muted)}input{width:100%;background:#17201b;border:1px solid #35453a;border-radius:6px;padding:13px 15px;color:var(--text)}input:focus{border-color:var(--gold)}.primary{background:var(--gold);color:var(--ink);padding:14px 24px;font-weight:700;border-radius:6px;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:20px}.primary:hover{background:#ffe291}form .primary{width:100%;justify-content:space-between}.text-button{background:none;color:var(--muted);padding:0;font-size:13px;text-align:left;text-decoration:underline;text-underline-offset:4px}.text-button:hover{color:var(--gold)}#toggle-activation{margin:24px 0 6px}.session-note{font-size:12px;line-height:1.65;border-top:1px solid var(--line);padding-top:22px;margin-top:30px!important}.login-side small{color:#6e8476;margin-top:48px;font-size:11px}.error{color:#ffbcb4;font-size:13px;min-height:20px;margin:12px 0}.hint{font-size:12px;color:var(--muted)}#sidebar{position:fixed;left:0;top:0;bottom:0;width:295px;border-right:1px solid var(--line);padding:30px 24px 0;display:flex;flex-direction:column;background:#101a14;z-index:10}.overview{margin:33px 0 18px;padding:11px 14px;text-align:left;border:1px solid var(--line);background:transparent;color:var(--text);border-radius:6px}.search-label{font-size:9px;letter-spacing:1.4px;margin:2px 0 8px}#search{font-size:12px;padding:11px}#modules{overflow-y:auto;margin:20px -9px 0;padding:0 9px 24px;flex:1;scrollbar-width:thin;scrollbar-color:#3a4c3d transparent}.module-group{margin:4px 0}.module-group summary{display:flex;gap:11px;align-items:center;cursor:pointer;list-style:none;font-size:12px;padding:12px 5px;color:#cbd4cd}.module-group summary::-webkit-details-marker{display:none}.module-number{color:#688773;font-size:10px;font-variant-numeric:tabular-nums}.module-group[open] summary{color:var(--gold)}.lesson-link{display:block;width:100%;padding:9px 10px 9px 30px;text-align:left;font-size:12px;background:transparent;color:var(--muted);line-height:1.5;border-left:1px solid #304436}.lesson-link:hover,.lesson-link.active{color:var(--text);background:#1c2e21}.lesson-link.active{border-left:2px solid var(--gold)}.lesson-link.done::after{content:' ✓';color:var(--green)}.side-footer{padding:18px 0;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:12px}.workspace{margin-left:295px;min-height:100vh}.topbar{height:85px;padding:0 48px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:10px;letter-spacing:1px;color:var(--muted)}.topbar b{margin-left:12px;color:var(--text)}#menu{display:none;color:var(--text);background:none;font-size:22px}#main-content{max-width:1380px;margin:auto;padding:42px 48px 70px}.home-title{font-size:clamp(36px,4vw,58px);letter-spacing:-2px;line-height:1.12;margin:18px 0}.home-sub{max-width:550px;color:var(--muted);font-size:15px}.home-hero{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:center;padding-bottom:38px}.home-hero img{width:100%;border-radius:3px}.home-actions{margin-top:25px}.section-heading{font-size:22px;margin:36px 0 18px;letter-spacing:-.4px}.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px;border-top:1px solid var(--line)}.module-card{display:grid;grid-template-columns:36px 1fr 22px;gap:12px;align-items:center;padding:23px 0;text-align:left;background:none;color:var(--text);border-bottom:1px solid var(--line)}.module-card>span:first-child{font-size:12px;color:var(--gold)}.module-card strong{display:block;font-size:16px;font-weight:500}.module-card small{display:block;font-size:11px;color:var(--muted);margin-top:3px}.module-card:hover strong{color:var(--gold)}.version-note{font-size:11px;color:var(--muted);margin-top:35px;max-width:830px}.lesson-heading{display:flex;justify-content:space-between;align-items:center;gap:15px;color:var(--muted);font-size:12px;margin-bottom:30px}.lesson-heading button{background:transparent;color:var(--muted);border:1px solid var(--line);padding:7px 12px;border-radius:4px;font-size:11px}.lesson{min-height:440px}.lesson h1{font-size:clamp(34px,4.5vw,60px);line-height:1.14;letter-spacing:-1px;color:var(--gold);margin:0 0 34px;overflow-wrap:anywhere}.lesson.move h1{font-family:Consolas,ui-monospace,monospace;letter-spacing:0}.frame-data{display:flex;flex-wrap:wrap;gap:12px 28px;margin:0 0 42px;padding-bottom:24px;border-bottom:1px solid var(--line);font:clamp(16px,1.8vw,24px)/1.5 Consolas,monospace;color:var(--green)}.lesson p{font-size:clamp(16px,1.6vw,21px);line-height:1.65;margin:0 0 25px;max-width:1050px}.combo-route{white-space:pre-wrap;overflow-wrap:anywhere;color:var(--green);font:700 clamp(17px,2.1vw,29px)/1.8 Consolas,monospace;padding:25px 0 36px;margin:0}.table-scroll{overflow-x:auto;margin:15px 0 28px}table{width:100%;border-collapse:collapse;font-size:clamp(13px,1.4vw,18px)}th{text-align:left;color:var(--gold);font-size:12px;letter-spacing:.5px;background:#1b2a20}td,th{padding:16px;border-bottom:1px solid var(--line);vertical-align:top}td:first-child{color:var(--green);white-space:nowrap;font-family:Consolas,monospace}tbody tr:hover{background:#17251c}.caption{color:var(--muted);font-size:14px!important}.resource{display:block;color:var(--green);padding:10px 0}.lesson-image{width:min(100%,720px);margin:10px 0 25px}.lesson-footer{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-top:50px;border-top:1px solid var(--line);padding-top:24px}.lesson-footer .source-link{color:var(--muted);font-size:11px}.navigation{display:flex;justify-content:space-between;gap:15px;margin-top:26px}.secondary{padding:12px 18px;background:transparent;border:1px solid var(--line);color:var(--text);border-radius:5px}.secondary:disabled{cursor:default;opacity:.35}.completion{padding:12px 18px;background:#1e3827;border:1px solid #456442;color:var(--green);border-radius:5px}.completion.is-done{color:var(--gold);border-color:#948041}.loading{position:fixed;inset:0;background:var(--bg);display:grid;place-items:center;color:var(--gold);z-index:99}#toast{position:fixed;right:24px;bottom:24px;background:#233c2b;color:var(--text);border:1px solid #476348;padding:12px 20px;border-radius:6px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s}#toast.visible{opacity:1}.presenting #sidebar,.presenting .topbar{display:none}.presenting .workspace{margin-left:0}.presenting #main-content{max-width:1400px;padding:35px 80px}.presenting .lesson{min-height:50vh}.presenting .lesson p{font-size:clamp(18px,2vw,29px)}.presenting .lesson h1{font-size:clamp(38px,5vw,68px)}.empty-search{font-size:12px;color:var(--muted);padding:15px}.offline{color:#ffbcb4!important}
@media(min-width:1600px){.welcome{padding-left:100px;padding-right:100px}.login-box{max-width:420px}.welcome-copy{margin-top:100px}}
@media(max-width:1000px){.welcome{padding:35px}.welcome-copy{margin:60px 0 30px}.login-side{padding:35px}#sidebar{width:260px;padding:25px 18px 0}.workspace{margin-left:260px}.topbar{padding:0 28px}#main-content{padding:32px 28px}.home-hero{grid-template-columns:1fr}.home-hero img{max-width:550px}.module-grid{grid-template-columns:1fr}.lesson-footer{flex-wrap:wrap}.presenting #main-content{padding:30px}}
@media(max-width:700px){.login-page{grid-template-columns:1fr}.welcome{padding:28px 25px 20px}.welcome .brand{font-size:26px}.welcome-copy{margin:34px 0 12px}.welcome h1{font-size:38px}.welcome-copy p{font-size:14px}.welcome .cover,.welcome .art-credit{display:none}.login-side{padding:35px 25px 22px}.login-box{max-width:none}.login-box h2{font-size:27px}.login-side small{margin-top:30px}#sidebar{transform:translateX(-100%);width:min(86vw,300px);transition:transform .2s;box-shadow:0 0 0 100vw #0008}.workspace{margin-left:0}body:not(.menu-open) #sidebar{box-shadow:none}.menu-open #sidebar{transform:none}.topbar{padding:0 20px;height:67px;gap:15px}#menu{display:block}.topbar b{display:block;margin-left:0;font-size:11px}#progress-label{font-size:9px;text-align:right}#main-content{padding:28px 22px 45px}.home-title{font-size:39px}.home-hero{gap:25px}.home-hero img{display:none}.lesson-heading{font-size:11px;margin-bottom:22px}.lesson h1{font-size:36px;margin-bottom:24px}.lesson{min-height:0}.lesson p{font-size:17px}.frame-data{font-size:17px;gap:10px 20px}.lesson-footer{margin-top:28px}.lesson-footer .completion{width:100%}.navigation button{font-size:13px}.presenting #main-content{padding:20px}.version-note{font-size:10px}td,th{padding:12px}.combo-route{font-size:19px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}