*,*:before,*:after{box-sizing:border-box}html,body{margin:0;height:100%}body{background:var(--bg);color:var(--ink);font-family:var(--font-body);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}#app{height:100%}a{color:inherit;text-decoration:none}kbd{font-family:var(--font-code);font-size:.78em;padding:.1em .4em;border-radius:4px;background:var(--panel-2);border:1px solid var(--line)}:root,[data-theme=boot]{--bg: #efe9d8;--panel: #f7f2e4;--panel-2: #e7e0cc;--ink: #20201a;--ink-soft: #4d4a3d;--muted: #8a8470;--line: #d8d0b8;--accent: #1094de;--accent-2: #f77321;--accent-ink: #f7fff7;--font-display: "Press Start 2P", monospace;--font-body: "Fira Code", monospace;--font-code: "Fira Code", monospace;--display-weight: 400;--display-tracking: .01em;--radius: 4px;--radius-lg: 6px}.app{height:100%;display:grid;grid-template-columns:var(--sidebar-w, 282px) 1fr;grid-template-rows:auto 1fr;grid-template-areas:"topbar topbar" "sidebar stage"}.topbar{grid-area:topbar;display:flex;align-items:center;gap:22px;padding:0 22px;height:58px;background:var(--topbar-bg, var(--panel));border-bottom:1px solid var(--line);z-index:5}.brand{display:inline-flex;align-items:center}.brand__logo{display:block;height:22px;width:auto;image-rendering:pixelated;transition:filter .15s ease}.brand:hover .brand__logo{filter:drop-shadow(0 0 4px var(--vfd-faint, transparent))}[data-mode=dark] .brand__logo--light,[data-mode=light] .brand__logo--dark{display:none}.topbar__page,.pg-title{font-family:var(--font-display);font-weight:400;font-size:12px;color:var(--ink)}@view-transition{navigation:auto}.home-nav>.brand,.topbar>.brand,.pg-nav>.brand{view-transition-name:brand}.vt-page{view-transition-name:page-label}::view-transition-group(brand),::view-transition-group(page-label){animation-duration:.42s;animation-timing-function:cubic-bezier(.4,.8,.3,1)}@media(prefers-reduced-motion:reduce){::view-transition-group(*),::view-transition-old(*),::view-transition-new(*){animation:none!important}}.progress{flex:1;display:flex;gap:3px;height:15px;padding:2px 5px;background:var(--vfd-bg, var(--panel-2));border:1px solid var(--line);border-radius:3px;box-shadow:inset 0 1px 3px var(--progress-groove, rgba(0, 0, 0, .12))}.progress__seg{flex:1 1 0;min-width:0;border-radius:2px;transform:skew(-11deg);background:var(--seg-off, var(--line));transition:background .12s ease,box-shadow .12s ease}.progress__seg.is-on{background:var(--seg-on, var(--accent));box-shadow:var(--seg-on-glow, none)}.progress__seg.pulse-on{animation:seg-on .3s ease-out}.progress__seg.pulse-off{animation:seg-off .34s ease-in}@keyframes seg-on{0%{background:var(--seg-flash, #fff);box-shadow:var(--seg-flash-glow, none)}to{background:var(--seg-on, var(--accent));box-shadow:var(--seg-on-glow, none)}}@keyframes seg-off{0%{background:var(--seg-flash, #fff);box-shadow:var(--seg-flash-glow, none)}35%{background:var(--seg-on, var(--accent));box-shadow:var(--seg-on-glow, none)}to{background:var(--seg-off, var(--line));box-shadow:none}}.counter{font-family:var(--font-code);font-size:12px;color:var(--muted);letter-spacing:.5px}.mode{position:relative;isolation:isolate;display:flex;align-items:center;justify-content:center;width:33px;height:26px;padding:0;border:none;background:transparent;color:var(--muted);cursor:pointer;transition:color .14s ease}.mode:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;transform:skew(-10deg);border-radius:2px;border:1px solid var(--line);background:var(--panel)}.mode:hover{color:var(--accent)}.mode:hover:before{border-color:var(--accent);box-shadow:var(--vfd-glow, none)}.mode svg{width:16px;height:16px}[data-mode=dark] .mode .i-sun,[data-mode=light] .mode .i-moon{display:none}.sidebar{grid-area:sidebar;position:relative;overflow-y:auto;padding:18px 12px 60px;background:var(--sidebar-bg, var(--panel));border-right:1px solid var(--line)}.nav-cursor{position:absolute;z-index:0;left:12px;right:12px;top:0;height:0;opacity:0;background:var(--panel-2);border-radius:var(--radius);box-shadow:var(--sel-glow, none);pointer-events:none;transition:transform .26s cubic-bezier(.34,.9,.3,1),height .26s cubic-bezier(.34,.9,.3,1),opacity .15s ease}.nav-cursor:before,.nav-cursor:after{content:"";position:absolute;top:6px;bottom:6px;width:6px;border:2px solid var(--accent)}.nav-cursor:before{left:5px;border-right:0}.nav-cursor:after{right:5px;border-left:0}.nav__chapter{margin-bottom:20px}.nav__heading{margin:0 0 6px;padding:0 10px;font-family:var(--font-code);font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--muted)}.nav__item{position:relative;z-index:1;display:flex;align-items:center;gap:10px;padding:6px 17px;border-radius:var(--radius);color:var(--ink-soft);transition:color .12s ease}.nav__item:hover,.nav__item.is-current{color:var(--ink)}.nav__item.is-current .nav__title{font-weight:700}.nav__num{font-family:var(--font-code);font-size:11px;color:var(--muted);min-width:18px}.nav__title{font-size:13.5px;font-weight:500;flex:1}.nav__live{font-size:8px;color:var(--live, var(--accent))}.stage{grid-area:stage;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.04fr);overflow:hidden}.lesson{overflow-y:auto;padding:clamp(28px,4.6vw,60px);display:flex;flex-direction:column}.lesson__eyebrow{display:flex;align-items:center;gap:12px;font-family:var(--font-code);font-size:11px;text-transform:uppercase;letter-spacing:2px;color:var(--muted);margin-bottom:16px}.lesson__title{font-family:var(--font-display);font-weight:var(--display-weight, 700);font-size:clamp(18px,2.6vw,30px);line-height:1.25;letter-spacing:var(--display-tracking, -.01em);margin:0 0 22px;color:var(--ink)}.lesson__body{font-size:16px;line-height:1.72;color:var(--ink-soft, var(--ink));max-width:46ch}.lesson__body p{margin:0 0 16px}.lesson__body code{font-family:var(--font-code);font-size:.85em;padding:.1em .4em;border-radius:4px;background:var(--code-chip);color:var(--accent-ink-on-chip, var(--ink))}.lesson__body strong{color:var(--ink);font-weight:700}.lesson__nav{display:flex;justify-content:space-between;gap:12px;margin-top:34px}.ghost,.cta{font-family:var(--font-body);font-size:13.5px;font-weight:600;padding:10px 18px;color:var(--muted);cursor:pointer;transition:color .14s ease}.ghost:before{border:1px solid var(--line);background:var(--panel)}.ghost:hover{color:var(--ink)}.ghost:hover:before{border-color:var(--ink-soft, var(--ink))}.cta{color:var(--accent-ink)}.cta:before{background:var(--accent);box-shadow:var(--vfd-glow, none)}.cta:hover:before{filter:brightness(1.08)}.badge{font-family:var(--font-code);font-size:10px;letter-spacing:1.5px;padding:4px 9px}.badge--live{color:var(--accent-ink)}.badge--live:before{background:var(--live, var(--accent));box-shadow:var(--vfd-glow-live, none)}.badge--preview{color:var(--muted)}.badge--preview:before{border:1px solid var(--line)}.ghost,.cta,.badge{position:relative;isolation:isolate;border:none;background:transparent}.ghost:before,.cta:before,.badge:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;z-index:-1;transform:skew(-10deg);border-radius:2px}.workbench{min-height:0;background:var(--screen-frame, var(--bg));border-left:1px solid var(--line);padding:var(--screen-pad, 0)}.screen{height:100%;min-height:0;display:flex;flex-direction:column;background:var(--editor-bg);border:1px solid var(--screen-border, transparent);border-radius:var(--screen-radius, 0);overflow:hidden}.editor{flex:1;min-height:0;overflow:hidden}.cm-editor{height:100%}.statusbar{display:flex;align-items:center;justify-content:space-between;height:24px;padding:0 12px;font-family:var(--font-code);font-size:11px;letter-spacing:.4px;color:var(--status-fg, var(--muted));background:var(--status-bg, var(--tab-bar-bg));border-top:1px solid var(--screen-border, var(--line))}.statusbar__dot{width:7px;height:7px;border-radius:50%;background:var(--status-fg, var(--muted));transition:background .15s ease}.statusbar__dot[data-state=run]{background:#f7a518}.statusbar__dot[data-state=ok]{background:var(--ok)}.statusbar__dot[data-state=err]{background:var(--err)}.statusbar__dot[data-state=preview]{background:var(--out-preview)}.output{flex:none;min-height:86px;max-height:32%;overflow-y:auto;padding:12px 16px;font-family:var(--font-code);background:var(--output-bg, var(--editor-bg));border-top:1px solid var(--screen-border, var(--line))}.output.is-empty{display:flex;align-items:center}.output__hint{font-size:12.5px;color:var(--status-fg, var(--muted))}.output__tag{display:inline-block;font-size:10px;text-transform:uppercase;letter-spacing:1.5px;color:var(--status-fg, var(--muted));margin-bottom:7px}.output pre{margin:0;font-size:13.5px;line-height:1.6;white-space:pre-wrap;color:var(--out-ok, var(--ok))}.output--err pre{color:var(--out-err, var(--err))}.output--preview pre{color:var(--out-preview, var(--c6))}.reveal{opacity:0;transform:translateY(8px);animation:reveal .45s cubic-bezier(.2,.8,.2,1) forwards}@keyframes reveal{to{opacity:1;transform:none}}.sidebar::-webkit-scrollbar,.lesson::-webkit-scrollbar,.output::-webkit-scrollbar,.cm-scroller::-webkit-scrollbar{width:10px;height:10px}.sidebar::-webkit-scrollbar-thumb,.lesson::-webkit-scrollbar-thumb{background:var(--line);border-radius:999px;border:3px solid transparent;background-clip:content-box}.output::-webkit-scrollbar-thumb,.cm-scroller::-webkit-scrollbar-thumb{background:var(--screen-border, var(--line));border-radius:999px;border:3px solid transparent;background-clip:content-box}@media(max-width:940px){.app{grid-template-columns:1fr;grid-template-areas:"topbar" "stage"}.sidebar{display:none}.stage{grid-template-columns:1fr;grid-template-rows:auto 1fr;overflow-y:auto}.workbench{border-left:none;border-top:1px solid var(--line);min-height:72vh}}[data-theme=pocket]{--bg: #efe9d8;--panel: #f7f2e4;--panel-2: #e7e0cc;--ink: #20201a;--ink-soft: #4d4a3d;--muted: #8a8470;--line: #d8d0b8;--accent: #1094de;--accent-2: #f77321;--accent-ink: #f7fff7;--live: #219439;--code-chip: #e7e0cc;--accent-ink-on-chip: #146aa6;--font-display: "Press Start 2P", monospace;--font-body: "Fira Code", monospace;--font-code: "Fira Code", monospace;--display-weight: 400;--display-tracking: .01em;--radius: 4px;--radius-lg: 6px;--code-size: 13.5px;--topbar-bg: #efe9d8;--sidebar-bg: #ece5d2;--vfd-bg: #e3dcc6;--seg-off: #cfc7ad;--seg-on: #1094de;--seg-on-glow: 0 0 2px rgba(16, 148, 222, .22);--seg-flash: #d8ecff;--seg-flash-glow: 0 0 4px rgba(16, 148, 222, .4);--progress-groove: rgba(32, 32, 16, .14);--vfd-glow: 0 0 2px rgba(16, 148, 222, .2);--vfd-glow-live: 0 0 2px rgba(33, 148, 57, .22);--vfd-faint: rgba(16, 148, 222, .06);--sel-glow: none;--screen-frame: #e7e0cc;--screen-pad: 10px;--screen-border: #d8d0b8;--screen-radius: 7px;--editor-bg: #f6f1e3;--tab-bar-bg: #ece5d2;--status-bg: #ece5d2;--status-fg: #8a8470;--output-bg: #eef0e0;--out-ok: #219439;--out-err: #e71839;--out-preview: #8a8470;--ok: #219439;--err: #e71839;--editor-caret: #1094de;--editor-gutter-bg: #efe9d8;--editor-gutter-fg: #b8b095;--editor-gutter-line: #e3dcc6;--editor-selection: rgba(16, 148, 222, .16);--editor-active-line: rgba(32, 32, 16, .04);--tok-keyword: #942963;--tok-atom: #b56b42;--tok-number: #de8442;--tok-string: #105239;--tok-comment: #9a9079;--tok-operator: #6b4a6b;--tok-builtin: #184a9c;--tok-ident: #20201a}[data-theme=pocket] body{background-color:var(--bg);background-image:radial-gradient(rgba(32,32,16,.06) 1px,transparent 1px);background-size:7px 7px}[data-theme=pocket][data-mode=dark]{--bg: #080810;--panel: #12121d;--panel-2: #1c1c2b;--ink: #eef2f0;--ink-soft: #c6cede;--muted: #6b7488;--line: #232333;--accent: #1094de;--accent-2: #f77321;--accent-ink: #f7fff7;--live: #52c64a;--code-chip: #1b1b29;--accent-ink-on-chip: #6fc0f0;--topbar-bg: #0c0c16;--sidebar-bg: #0a0a13;--vfd-bg: #08131a;--seg-off: #15333a;--seg-on: #52e7e7;--seg-on-glow: 0 0 3px rgba(82, 231, 231, .4);--seg-flash: #d6ffff;--seg-flash-glow: 0 0 6px rgba(82, 231, 231, .7);--progress-groove: rgba(0, 0, 0, .5);--vfd-glow: 0 0 3px rgba(16, 148, 222, .4);--vfd-glow-live: 0 0 3px rgba(82, 198, 74, .4);--vfd-faint: rgba(16, 148, 222, .1);--sel-glow: 0 0 8px rgba(16, 148, 222, .1);--screen-frame: #080810;--screen-border: #06181f;--editor-bg: #102931;--tab-bar-bg: #0b1f26;--status-bg: #0b1f26;--status-fg: #636b7b;--output-bg: #0b1f26;--out-ok: #84ef39;--out-err: #f74a6b;--out-preview: #8c9cb5;--ok: #84ef39;--err: #f74a6b;--editor-caret: #52e7e7;--editor-gutter-bg: #0d242c;--editor-gutter-fg: #44525c;--editor-gutter-line: #0a2027;--editor-selection: rgba(82, 231, 231, .17);--editor-active-line: rgba(199, 206, 222, .045);--tok-keyword: #f74a6b;--tok-atom: #f7a518;--tok-number: #52c64a;--tok-string: #f7ef5a;--tok-comment: #636b7b;--tok-operator: #52e7e7;--tok-builtin: #1094de;--tok-ident: #c6cede}[data-theme=pocket][data-mode=dark] body{background-color:var(--bg);background-image:radial-gradient(rgba(199,206,222,.04) 1px,transparent 1px);background-size:7px 7px}[data-theme=pocket] .cm-scroller{scrollbar-width:thin}.home{min-height:100%;max-width:1180px;margin:0 auto;padding:0 clamp(20px,4vw,48px) 80px}.home-nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:72px}.home-nav__links{display:flex;align-items:center;gap:clamp(10px,2vw,22px)}.home-link{font-family:var(--font-code);font-size:13px;color:var(--ink-soft);transition:color .15s ease}.home-link:hover{color:var(--accent)}.home-nav__cta{font-size:12.5px;padding:8px 14px}.hero{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,1fr);gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(32px,7vw,84px) 0 clamp(28px,5vw,56px)}.hero__eyebrow{font-family:var(--font-code);font-size:12px;text-transform:uppercase;letter-spacing:3px;color:var(--accent);margin:0 0 18px}.hero__title{font-family:var(--font-display);font-weight:400;font-size:clamp(24px,4vw,48px);line-height:1.05;letter-spacing:.01em;margin:0 0 24px;color:var(--ink);text-shadow:3px 3px 0 var(--vfd-faint, transparent)}.hero__lede{font-size:clamp(16px,1.5vw,18px);line-height:1.65;color:var(--ink-soft);max-width:46ch;margin:0 0 30px}.hero__lede code,.feature__body code{font-family:var(--font-code);font-size:.86em;padding:.08em .4em;border-radius:3px;background:var(--code-chip);color:var(--accent-ink-on-chip, var(--accent))}.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:16px}.hero__note{font-family:var(--font-code);font-size:12px;color:var(--muted);margin:0}.cta--lg,.ghost--lg{font-size:15px;padding:13px 24px}.hero__demo{background:var(--screen-frame, var(--panel-2));padding:var(--screen-pad, 10px);border:1px solid var(--line);border-radius:calc(var(--screen-radius, 7px) + 3px);box-shadow:0 20px 50px #0000002e}.hero__demo .screen{height:clamp(300px,44vh,384px)}.hero__demo .output{max-height:40%}.palette{height:12px;border-radius:3px;overflow:hidden;border:1px solid var(--line);margin:16px 0}.palette__track{display:flex;width:max-content;height:100%;animation:palette-scroll 46s linear infinite}.palette--rev .palette__track{animation-direction:reverse}.palette__track span{flex:0 0 64px;height:100%}.palette:hover .palette__track{animation-play-state:paused}@keyframes palette-scroll{to{transform:translate(-50%)}}@media(prefers-reduced-motion:reduce){.palette__track{animation:none}}.features{padding-top:clamp(32px,5vw,56px)}.section-title{font-family:var(--font-display);font-weight:400;font-size:clamp(15px,2.2vw,24px);line-height:1.5;color:var(--ink);margin:0 0 28px}.features__grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px}.feature{position:relative;padding:22px 22px 24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .18s ease,border-color .18s ease}.feature:before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent);box-shadow:var(--vfd-glow, none);opacity:0;transition:opacity .18s ease}.feature:hover{transform:translateY(-3px);border-color:var(--accent)}.feature:hover:before{opacity:1}.feature__glyph{display:inline-block;font-size:20px;color:var(--accent);margin-bottom:12px}.feature__title{font-family:var(--font-display);font-weight:400;font-size:12px;line-height:1.5;color:var(--ink);margin:0 0 8px}.feature__body{font-size:14px;line-height:1.6;color:var(--ink-soft);margin:0}.finale{text-align:center;padding:clamp(56px,9vw,100px) 0 clamp(32px,5vw,56px)}.finale__title{font-family:var(--font-display);font-weight:400;font-size:clamp(18px,3vw,32px);line-height:1.4;color:var(--ink);margin:0 0 14px;text-shadow:3px 3px 0 var(--vfd-faint, transparent)}.finale__sub{font-size:16px;color:var(--ink-soft);max-width:50ch;margin:0 auto 30px;line-height:1.6}.finale__actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}.home-foot{display:flex;align-items:center;justify-content:center;gap:12px;padding-top:40px;border-top:1px solid var(--line);font-family:var(--font-code);font-size:12px;color:var(--muted)}.home-foot__brand .brand__logo{height:15px}.boot{opacity:0;transform:translateY(12px);animation:boot .6s cubic-bezier(.2,.8,.2,1) forwards}@keyframes boot{to{opacity:1;transform:none}}@media(prefers-reduced-motion:reduce){.boot{opacity:1;transform:none;animation:none}}@media(max-width:880px){.hero{grid-template-columns:1fr;text-align:left}.hero__demo{order:2}.home-nav__links .home-link{display:none}}.pg{height:100%;display:flex;flex-direction:column}.pg-nav{flex:none;display:flex;align-items:center;gap:16px;height:58px;padding:0 clamp(16px,3vw,28px);border-bottom:1px solid var(--line);background:var(--topbar-bg, var(--panel))}.pg-title{font-family:var(--font-display);font-weight:600;font-size:17px;color:var(--ink)}.pg-nav__links{display:flex;align-items:center;gap:clamp(12px,2vw,20px);margin-left:auto}.pg-main{flex:1;min-height:0;display:flex;padding:clamp(14px,2.5vw,26px) clamp(16px,3vw,28px) clamp(16px,3vw,26px)}.pg-screen-wrap{flex:1;min-height:0;background:#0a1822;padding:var(--screen-pad, 10px);border:1px solid var(--line);border-radius:calc(var(--screen-radius, 7px) + 3px)}.term{height:100%;overflow-y:auto;padding:16px 18px 20px;background:#07131b;border:1px solid #06181f;border-radius:var(--screen-radius, 7px);font-family:var(--font-code);font-size:14px;line-height:21px;color:#c6cede;cursor:text}.term__boot{display:block;margin:0 0 8px;image-rendering:pixelated}.term__version{min-height:21px;margin:0}.term__log{margin:0}.term__line{white-space:pre-wrap;word-break:break-word}.term__echo{color:#aab6cf}.term__out{color:#84ef39}.term__err{color:#f74a6b}.term__hint{color:#4d6068}.term__inputline{display:flex;align-items:flex-start;gap:8px}.term__prompt{color:#52e7e7}.term__input{flex:1;min-width:0;background:transparent;border:none;outline:none;font:inherit;line-height:inherit;color:#eaf3f1;caret-color:#52e7e7;padding:0;margin:0;resize:none;overflow:hidden;white-space:pre-wrap;word-break:break-word}.term::-webkit-scrollbar{width:10px}.term::-webkit-scrollbar-thumb{background:#14303a;border-radius:999px;border:3px solid transparent;background-clip:content-box}@media(max-width:720px){.pg-title{display:none}}