:root{color-scheme:light dark;--ink:light-dark(#16211d,#f2f2f2);--muted:light-dark(#52645c,#b9c0c7);--paper:light-dark(#f7f4ec,#2b2b2b);--paper-deep:light-dark(#eee8dc,#202124);--paper-middle:light-dark(#fbfaf6,#252629);--surface:light-dark(#ffffffad,#343638e0);--surface-raised:light-dark(#ffffffbf,#3c3f41);--control-surface:light-dark(#ffffffc7,#343638);--line:light-dark(#16211d2e,#f2f2f238);--accent:light-dark(#0f766e,#6fcfc5);--accent-ink:light-dark(#075a54,#8bd5ca);--accent-fill:light-dark(#075a54,#00645e);--accent-fill-hover:light-dark(#0f766e,#00756d);--on-accent:#fff;--accent-soft:light-dark(#0f766e14,#8bd5ca1f);--accent-soft-hover:light-dark(#0f766e1f,#8bd5ca2e);--warm:light-dark(#d97745,#ffad7a);--focus:light-dark(#1d4ed8,#8ab4f8);--inline-code-surface:light-dark(#16211d14,#ffffff1a);--dialog-backdrop:light-dark(#16211da8,#000000c7);--warm-glow:light-dark(#d977451f,#ffad7a1a);--accent-glow:light-dark(#0f766e21,#6fcfc51a);--diagram-frame-surface:light-dark(#ffffffbd,#303236);--diagram-panel-surface:light-dark(#fbfaf6,#2f3135);--diagram-raised-surface:light-dark(#fdfcf9,#3a3d42);--diagram-shadow-color:light-dark(#16211d17,#00000061);--shadow-color:light-dark(#26302a1f,#0000006b);--diagram-shadow:0 1rem 2.5rem var(--diagram-shadow-color);--shadow:0 22px 60px var(--shadow-color);font-synthesis:none;text-rendering:optimizelegibility;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}:root[data-theme=light]{color-scheme:light}:root[data-theme=dark]{color-scheme:dark}*{box-sizing:border-box}html{background:var(--paper);min-width:20rem;color:var(--ink)}body{background:radial-gradient(circle at 15% 8%, var(--warm-glow), transparent 28rem), radial-gradient(circle at 88% 22%, var(--accent-glow), transparent 31rem), linear-gradient(180deg, var(--paper), var(--paper-middle) 54%, var(--paper-deep));min-height:100vh;margin:0;line-height:1.6}a{color:inherit}a:focus-visible{outline:.2rem solid var(--focus);outline-offset:.25rem;border-radius:.2rem}.skip-link{z-index:10;top:.75rem;background:var(--ink);color:var(--paper);border-radius:999px;padding:.6rem .9rem;position:fixed;inset-inline-start:.75rem;transform:translateY(-200%)}.skip-link:focus{transform:translateY(0)}.site-header,.site-footer,.shell-container{width:min(70rem,100% - 2rem);margin-inline:auto}.site-header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:1rem;padding-block:1.35rem;display:flex}.site-header__controls{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:.75rem 1rem;min-width:0;display:flex}.wordmark{letter-spacing:-.02em;align-items:center;gap:.65rem;font-weight:750;text-decoration:none;display:inline-flex}.wordmark-mark{background:var(--ink);width:2rem;height:2rem;color:var(--paper);border-radius:.65rem;place-items:center;font-family:Georgia,serif;font-size:1.25rem;display:grid}.locale-switch{min-width:0;color:var(--muted);text-transform:uppercase;letter-spacing:.1em;flex-wrap:wrap;align-items:baseline;gap:.7rem;font-size:.82rem;display:flex}.locale-switch a{color:var(--ink);letter-spacing:normal;text-transform:none;text-underline-offset:.25rem;font-weight:750}.hero{padding-block:clamp(4.5rem,11vw,8.5rem) clamp(3rem,8vw,5rem)}.eyebrow{color:var(--accent-ink);letter-spacing:.16em;text-transform:uppercase;margin:0 0 1rem;font-size:.78rem;font-weight:800}.hero h1,.language-picker h1{letter-spacing:-.06em;max-width:12ch;margin:0;font-family:Georgia,Times New Roman,serif;font-size:clamp(3.1rem,9vw,7rem);font-weight:500;line-height:.94}.hero-intro{max-width:46rem;color:var(--muted);margin:2rem 0 0;font-size:clamp(1.05rem,2vw,1.35rem)}.feature-grid{grid-template-columns:repeat(3,1fr);gap:1rem;display:grid}.feature-card{border:1px solid var(--line);background:var(--surface);min-height:18rem;box-shadow:var(--shadow);backdrop-filter:blur(.7rem);border-radius:1.25rem;padding:1.35rem}.feature-number{color:var(--warm);direction:ltr;unicode-bidi:isolate;margin-bottom:5rem;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.8rem;font-weight:800;display:block}.feature-card h2{margin:0;font-family:Georgia,Times New Roman,serif;font-size:1.65rem;font-weight:500;line-height:1.1}.feature-card p{color:var(--muted);margin:.85rem 0 0}.course-note{border-inline-start:.25rem solid var(--accent);background:var(--accent-soft);align-items:center;gap:1rem;margin-block:2rem 6rem;padding:1.2rem 1.35rem;display:flex}.course-note>span{color:var(--accent-ink);font-size:2rem}.course-note-content{gap:.75rem;min-width:0;display:grid}.course-note p{margin:0}.course-actions{flex-wrap:wrap;align-items:center;gap:.65rem;min-width:0;display:flex}.course-cta,.repository-cta{overflow-wrap:anywhere;border:1px solid #0000;border-radius:.7rem;justify-content:center;align-items:center;gap:.35rem;width:fit-content;max-width:100%;padding:.65rem .9rem;font-weight:750;line-height:1.2;text-decoration:none;transition:background-color .15s,color .15s;display:inline-flex}.course-cta{background:var(--accent-fill);color:var(--on-accent)}.course-cta:hover{background:var(--accent-fill-hover)}.repository-cta{border-color:var(--accent-ink);color:var(--accent-ink)}.repository-cta:hover{background:var(--accent-soft-hover)}.site-footer{border-top:1px solid var(--line);color:var(--muted);padding-block:1.5rem 2.5rem;font-size:.9rem}.site-footer p{margin:0}.language-page{place-items:center;min-height:100vh;padding:1rem;display:grid}.language-picker{border:1px solid var(--line);background:var(--surface);width:min(62rem,100%);box-shadow:var(--shadow);backdrop-filter:blur(.8rem);border-radius:2rem;padding:clamp(2rem,6vw,5rem)}.language-picker-mark{background:var(--ink);width:3rem;height:3rem;color:var(--paper);border-radius:.85rem;place-items:center;margin-bottom:3rem;font-family:Georgia,serif;font-size:1.8rem;display:grid}.language-picker h1{max-width:15ch;font-size:clamp(2.75rem,7vw,5.8rem)}.language-picker h1 span{color:var(--accent-ink);display:block}.language-picker h1 span:first-child{color:inherit}.language-picker h1 span[dir=rtl],.language-picker .eyebrow span[dir=rtl]{letter-spacing:normal;text-transform:none}.language-intro{max-width:42rem;color:var(--muted);margin:2rem 0;font-size:1.08rem}.language-intro span{display:block}.language-options{grid-template-columns:repeat(auto-fit,minmax(min(100%,15rem),1fr));gap:.75rem;display:grid}.language-options a{border:1px solid var(--line);background:var(--surface-raised);border-radius:.85rem;justify-content:space-between;align-items:center;padding:1rem 1.1rem;font-weight:750;text-decoration:none;transition:border-color .15s,transform .15s;display:flex}.language-options a:hover{border-color:var(--accent);transform:translateY(-.12rem)}.language-options a span:last-child{color:var(--accent-ink);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:.78rem}html[dir=rtl] .wordmark,html[dir=rtl] .eyebrow,html[dir=rtl] .locale-switch,html[dir=rtl] .hero h1{letter-spacing:normal}html[dir=rtl] .eyebrow,html[dir=rtl] .locale-switch{text-transform:none}@media (width<=48rem){.site-header{flex-direction:column;align-items:flex-start}.site-header__controls{justify-content:space-between;width:100%}.feature-grid,.language-options{grid-template-columns:1fr}.feature-card{min-height:auto}.feature-number{margin-bottom:2.5rem}.course-note{align-items:flex-start}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important}}