@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/46a9e2f250689b4a-s.0-dom-5bn10r2.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/76b70a1dbe058eb5-s.1y4-pdgsjb-pw.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/2fb76073e23fd9e4-s.3lvt2whj97whp.woff2)format("woff2");unicode-range:U+1F??}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/6131cbbf5549afa2-s.2uwcyprjm3xu3.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/45462fd7b7c12654-s.0k62hbripvv8p.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/ba63f6a0e436df8e-s.3-6t-g6q0vh0a.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Inter;font-style:normal;font-weight:100 900;font-display:swap;src:url(../media/07c7676b89ed2778-s.p.2bn3s6zvc0dyp.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Inter Fallback;src:local(Arial);ascent-override:90.44%;descent-override:22.52%;line-gap-override:0.0%;size-adjust:107.12%}.f4k-Ea_className{font-family:Inter,Inter Fallback;font-style:normal}.f4k-Ea_variable{--font-sans:"Inter", "Inter Fallback"}
@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/258bd0ab5fdd762a-s.2f7nqdagzwx2-.woff2)format("woff2");unicode-range:U+460-52F,U+1C80-1C8A,U+20B4,U+2DE0-2DFF,U+A640-A69F,U+FE2E-FE2F}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/99a2019bdfa8519b-s.176arc174-8zp.woff2)format("woff2");unicode-range:U+301,U+400-45F,U+490-491,U+4B0-4B1,U+2116}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/44e0cb21b0d052b7-s.0bp8oijd_gu96.woff2)format("woff2");unicode-range:U+370-377,U+37A-37F,U+384-38A,U+38C,U+38E-3A1,U+3A3-3FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/f9cd5a77d065db98-s.1fby2rem9ngyr.woff2)format("woff2");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/954d21e04331b2ae-s.0vfdmo25voy_0.woff2)format("woff2");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C4,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:JetBrains Mono;font-style:normal;font-weight:100 800;font-display:swap;src:url(../media/53897e768d329f66-s.p.3t6q91iet4nsy.woff2)format("woff2");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:JetBrains Mono Fallback;src:local(Arial);ascent-override:75.79%;descent-override:22.29%;line-gap-override:0.0%;size-adjust:134.59%}.CxiPNW_className{font-family:JetBrains Mono,JetBrains Mono Fallback;font-style:normal}.CxiPNW_variable{--font-mono:"JetBrains Mono", "JetBrains Mono Fallback"}
:root{--bg:#0a0c16;--bg-elev:#12152a;--bg-sunk:#191d36;--bg-glass:#12152ab8;--text:#f2f4fc;--text-muted:#9ea6c6;--border:#262b4a;--accent:#a6ff4d;--accent-strong:#c2ff86;--accent-soft:#a6ff4d1f;--accent-text:#0a0c16;--link:#7dd8ff;--violet:#b693ff;--pink:#ff7ac6;--success:#5ef08a;--success-soft:#5ef08a21;--danger:#ff7b7b;--danger-soft:#ff7b7b21;--warn:#ffd166;--warn-soft:#ffd16621;--code-bg:#0d1022;--code-text:#e6e8f5;--radius:16px;--grad:linear-gradient(95deg, #a6ff4d 0%, #4de8ff 50%, #b693ff 100%);--shadow:0 1px 0 #ffffff0a inset, 0 10px 30px #00000059;--accent-ink:#a6ff4d;--cyan:#4de8ff;--on-violet:#120d24;--header-bg:#0a0c16c7;--heat-1:#a6ff4d4d;--heat-2:#a6ff4d8c;--heat-3:#a6ff4dcc;--heat-4:#a6ff4d;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}@media (prefers-color-scheme:light){:root:not([data-theme=dark]){--bg:#f6f7fb;--bg-elev:#fff;--bg-sunk:#eef0f7;--bg-glass:#ffffffbf;--text:#12142a;--text-muted:#525a78;--border:#dde1ee;--accent:#9be82f;--accent-strong:#b3f25a;--accent-soft:#4696001a;--accent-ink:#3a7d00;--accent-text:#0a0c16;--link:#0a66c2;--violet:#6c3ce0;--on-violet:#fff;--pink:#c21a7a;--cyan:#0891b2;--success:#15803d;--success-soft:#15803d1a;--danger:#c0262d;--danger-soft:#c0262d14;--warn:#9a6700;--warn-soft:#d4a01724;--header-bg:#f6f7fbd1;--heat-1:#3a7d0038;--heat-2:#3a7d006b;--heat-3:#3a7d00a8;--heat-4:#3a7d00;--grad:linear-gradient(95deg, #3a9a00 0%, #0891b2 50%, #6c3ce0 100%);--shadow:0 1px 2px #1018280d, 0 8px 24px #10182812;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}}:root[data-theme=light]{--bg:#f6f7fb;--bg-elev:#fff;--bg-sunk:#eef0f7;--bg-glass:#ffffffbf;--text:#12142a;--text-muted:#525a78;--border:#dde1ee;--accent:#9be82f;--accent-strong:#b3f25a;--accent-soft:#4696001a;--accent-ink:#3a7d00;--accent-text:#0a0c16;--link:#0a66c2;--violet:#6c3ce0;--on-violet:#fff;--pink:#c21a7a;--cyan:#0891b2;--success:#15803d;--success-soft:#15803d1a;--danger:#c0262d;--danger-soft:#c0262d14;--warn:#9a6700;--warn-soft:#d4a01724;--header-bg:#f6f7fbd1;--heat-1:#3a7d0038;--heat-2:#3a7d006b;--heat-3:#3a7d00a8;--heat-4:#3a7d00;--grad:linear-gradient(95deg, #3a9a00 0%, #0891b2 50%, #6c3ce0 100%);--shadow:0 1px 2px #1018280d, 0 8px 24px #10182812;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box}html,body{margin:0;padding:0}html{scroll-behavior:smooth;overflow-x:clip}body{background:var(--bg);color:var(--text);font-family:var(--font-sans), system-ui, -apple-system, Segoe UI, sans-serif;-webkit-font-smoothing:antialiased;font-size:16px;line-height:1.65;overflow-x:hidden}a{color:var(--link);text-decoration:none}a:hover{text-decoration:underline}img,video,iframe{max-width:100%}code,pre{font-family:var(--font-mono), ui-monospace, Menlo, monospace}h1,h2,h3{letter-spacing:-.025em;margin:0 0 .5em;font-weight:800;line-height:1.12}h1{font-size:clamp(2.3rem,6vw,4.2rem)}h2{font-size:clamp(1.6rem,3.6vw,2.5rem)}h3{letter-spacing:-.01em;font-size:1.18rem}p{margin:0 0 1em}::selection{background:var(--accent);color:var(--accent-text)}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.skip{position:absolute;left:-999px}.skip:focus{background:var(--bg-elev);z-index:100;border-radius:8px;padding:8px 12px;top:8px;left:16px}.container{width:100%;max-width:1180px;margin:0 auto;padding:0 16px}.narrow{max-width:780px}.section{padding:88px 0}.section-tight{padding:32px 0}.muted{color:var(--text-muted)}.small{font-size:.875rem}.center{text-align:center}.row{display:flex}.wrap{flex-wrap:wrap}.gap-sm{gap:8px}.gap{gap:16px}.center-y{align-items:center}.between{justify-content:space-between}.stack>*+*{margin-top:16px}.eyebrow{text-transform:uppercase;letter-spacing:.12em;color:var(--accent-ink);font-size:.78rem;font-weight:800;font-family:var(--font-mono);margin-bottom:12px}.grad{background:var(--grad);color:#0000;-webkit-background-clip:text;background-clip:text}.lead{color:var(--text-muted);font-size:clamp(1.05rem,2vw,1.25rem)}.section-head{text-align:center;max-width:720px;margin:0 auto 48px}.site-header{z-index:30;background:var(--header-bg);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--border);position:sticky;top:0}.header-inner{align-items:center;gap:28px;height:68px;display:flex}.logo{color:var(--text);white-space:nowrap;letter-spacing:-.02em;align-items:center;gap:10px;font-size:1.2rem;font-weight:900;display:flex}.logo:hover{text-decoration:none}.logo-mark{background:var(--accent);color:var(--accent-text);font-family:var(--font-mono);border-radius:9px;padding:3px 7px;font-size:.82rem;font-weight:800}.logo b{color:var(--accent-ink)}.nav{scrollbar-width:none;flex:1;gap:22px;display:flex;overflow-x:auto}.nav a{color:var(--text-muted);white-space:nowrap;font-size:.95rem;font-weight:600}.nav a:hover{color:var(--text);text-decoration:none}.header-auth{align-items:center;gap:8px;display:flex}.header-auth form{margin:0}.chip-stat{background:var(--bg-sunk);border:1px solid var(--border);color:var(--text);white-space:nowrap;border-radius:999px;align-items:center;gap:6px;padding:5px 10px;font-size:.85rem;font-weight:700;display:inline-flex}.theme-toggle{border:1px solid var(--border);background:var(--bg-elev);cursor:pointer;border-radius:10px;place-items:center;width:36px;height:36px;padding:0;font-size:1rem;display:grid}.theme-toggle:hover{border-color:var(--accent-ink)}.chip-stat:hover{border-color:var(--accent-ink);text-decoration:none}@media (max-width:820px){.header-inner{flex-wrap:wrap;gap:10px;height:auto;padding-top:10px;padding-bottom:10px}.nav{flex-basis:100%;order:3;gap:18px}.header-auth{margin-left:auto}.hide-sm{display:none}}.btn{font:inherit;cursor:pointer;white-space:nowrap;border:1px solid #0000;border-radius:12px;justify-content:center;align-items:center;gap:8px;padding:11px 20px;font-weight:700;line-height:1.2;text-decoration:none;transition:background .15s,border-color .15s,transform .1s,box-shadow .2s;display:inline-flex}.btn:hover{text-decoration:none}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:var(--accent-text);box-shadow:0 0 #a6ff4d00}.btn-primary:hover:not(:disabled){background:var(--accent-strong);box-shadow:0 8px 30px #a6ff4d47}.btn-ghost{background:var(--bg-elev);color:var(--text);border-color:var(--border)}.btn-ghost:hover:not(:disabled){border-color:var(--text-muted)}.btn-link{color:var(--text-muted);background:0 0;padding-left:8px;padding-right:8px}.btn-link:hover{color:var(--text)}.btn-sm{border-radius:10px;padding:7px 13px;font-size:.9rem}.btn-lg{border-radius:14px;padding:16px 28px;font-size:1.08rem}.btn-block{width:100%}@media (max-width:480px){.btn{white-space:normal;text-align:center}.btn-lg{padding:14px 20px}}.btn-oauth{color:#1f2333;border-color:var(--border);background:#fff}.btn-oauth:hover{background:#eef0f7}.btn-github{color:#fff;background:#24292f;border-color:#3b424c}.btn-github:hover{background:#2f363d}.card{background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:24px}.card-link{color:inherit;transition:border-color .15s,transform .15s;display:block}.card-link:hover{border-color:var(--accent-ink);text-decoration:none;transform:translateY(-2px)}.badge{background:var(--bg-sunk);color:var(--text-muted);white-space:nowrap;border:1px solid var(--border);border-radius:999px;align-items:center;gap:4px;padding:3px 10px;font-size:.76rem;font-weight:700;display:inline-flex}.badge-success{background:var(--success-soft);color:var(--success);border-color:#0000}.badge-accent{background:var(--accent-soft);color:var(--accent-ink);border-color:#0000}.badge-soon{color:var(--text-muted);background:0 0;border-style:dashed}.badge-Easy{background:var(--success-soft);color:var(--success);border-color:#0000}.badge-Medium{background:var(--warn-soft);color:var(--warn);border-color:#0000}.badge-Hard{background:var(--danger-soft);color:var(--danger);border-color:#0000}.grid{gap:20px;display:grid}.grid-2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}.hero{padding:72px 0 64px;position:relative;overflow-x:clip}.hero-grid{grid-template-columns:1.1fr .9fr;align-items:center;gap:48px;display:grid}@media (max-width:960px){.hero-grid{grid-template-columns:1fr}}.hero h1{margin-bottom:20px}.hero .lead{max-width:580px;margin-bottom:30px}.hero-cta{flex-wrap:wrap;gap:12px;display:flex}.trust{color:var(--text-muted);flex-wrap:wrap;gap:8px 20px;margin-top:22px;font-size:.9rem;display:flex}.trust span:before{content:"✓ ";color:var(--accent-ink);font-weight:800}.glow{pointer-events:none;z-index:-1;background:radial-gradient(600px 300px at 20% 30%,#a6ff4d21,#0000 70%),radial-gradient(500px 300px at 80% 20%,#4de8ff1f,#0000 70%),radial-gradient(500px 280px at 60% 70%,#b693ff1f,#0000 70%);height:640px;position:absolute;inset:-20% -10% auto}.terminal{background:var(--code-bg);border:1px solid var(--border);border-radius:18px;position:relative;overflow:hidden;box-shadow:0 30px 80px #00000080,0 0 0 1px #a6ff4d0f}.terminal-bar{border-bottom:1px solid var(--border);background:#151935;align-items:center;gap:7px;padding:12px 14px;display:flex}.terminal-bar i{border-radius:50%;width:11px;height:11px;display:block}.terminal-bar i:first-child{background:#ff6b6b}.terminal-bar i:nth-child(2){background:#ffd166}.terminal-bar i:nth-child(3){background:#5ef08a}.terminal-bar span{font-family:var(--font-mono);color:var(--text-muted);margin-left:8px;font-size:.78rem}.terminal pre{color:var(--code-text);white-space:pre-wrap;min-height:300px;margin:0;padding:20px;font-size:.92rem;line-height:1.75}.t-dim{color:#6b7399}.t-acc{color:#a6ff4d}.t-cy{color:#4de8ff}.t-vi{color:#b693ff}.t-pk{color:#ff7ac6}.cursor{background:var(--accent);vertical-align:text-bottom;width:9px;height:1.1em;animation:1s step-end infinite blink;display:inline-block}@keyframes blink{50%{opacity:0}}.float{font-family:var(--font-mono);opacity:.9;pointer-events:none;-webkit-user-select:none;user-select:none;font-weight:800;animation:6s ease-in-out infinite float;position:absolute}@keyframes float{0%,to{transform:translateY(0) rotate(var(--r,0deg))}50%{transform:translateY(-14px) rotate(var(--r,0deg))}}@media (prefers-reduced-motion:reduce){.float,.cursor{animation:none}html{scroll-behavior:auto}}.feature-icon{margin-bottom:10px;font-size:1.8rem;line-height:1}.audience{grid-template-columns:repeat(auto-fit,minmax(min(100%,250px),1fr));gap:14px;display:grid}.audience .card{padding:20px}.steps{counter-reset:s}.step-card{padding-top:52px;position:relative}.step-card:before{counter-increment:s;content:"0" counter(s);font-family:var(--font-mono);color:var(--accent-ink);font-size:.9rem;font-weight:800;position:absolute;top:18px;left:24px}.tree{gap:28px;display:grid}.phase{padding-left:34px;position:relative}.phase:before{content:"";background:linear-gradient(var(--border), var(--border));width:2px;position:absolute;top:30px;bottom:-28px;left:11px}.phase:last-child:before{display:none}.phase-dot{background:var(--bg-sunk);border:2px solid var(--accent);width:24px;height:24px;box-shadow:0 0 0 5px var(--accent-soft);border-radius:50%;position:absolute;top:4px;left:0}.phase h3{font-size:1.05rem;font-family:var(--font-mono);color:var(--accent-ink);letter-spacing:0;margin:0 0 14px}.nodes{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));gap:12px;display:grid}.node{background:var(--bg-elev);border:1px solid var(--border);color:var(--text);border-radius:14px;align-items:center;gap:14px;padding:14px 16px;transition:border-color .15s,transform .15s;display:flex}.node:hover{border-color:var(--accent-ink);text-decoration:none;transform:translateY(-2px)}.node .ring{--p:0;width:46px;height:46px;font-size:.75rem;font-weight:800;font-family:var(--font-mono);background:radial-gradient(closest-side, var(--bg-elev) 76%, transparent 78% 100%), conic-gradient(var(--accent) calc(var(--p) * 1%), var(--bg-sunk) 0);border-radius:50%;flex-shrink:0;place-items:center;display:grid}.node .ring.empty{color:var(--text-muted)}.node strong{font-size:.97rem;line-height:1.3;display:block}.node .meta{color:var(--text-muted);font-size:.8rem}.price-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,280px),1fr));align-items:stretch;gap:18px;max-width:1040px;margin:0 auto;display:grid}.price-card{flex-direction:column;gap:12px;display:flex;position:relative}.price-card.featured{border:2px solid var(--accent);box-shadow:0 20px 60px #a6ff4d1f}.price{letter-spacing:-.03em;font-size:2.7rem;font-weight:900;line-height:1}.price span{color:var(--text-muted);letter-spacing:0;font-size:1rem;font-weight:600}.price-note{color:var(--accent-ink);min-height:1.4em;font-size:.9rem;font-weight:700}.checklist{margin:0 0 8px;padding:0;list-style:none}.checklist li{padding:5px 0 5px 28px;position:relative}.checklist li:before{content:"✓";color:var(--accent-ink);font-weight:900;position:absolute;left:2px}.ribbon{background:var(--accent);color:var(--accent-text);white-space:nowrap;border-radius:999px;padding:4px 12px;font-size:.75rem;font-weight:800;position:absolute;top:-13px;left:50%;transform:translate(-50%)}.guarantee{border:1px dashed var(--border);max-width:640px;color:var(--text-muted);border-radius:14px;justify-content:center;align-items:center;gap:14px;margin:28px auto 0;padding:16px 20px;font-size:.95rem;display:flex}.guarantee strong{color:var(--text)}details.faq{border-bottom:1px solid var(--border);padding:18px 0}details.faq summary{cursor:pointer;justify-content:space-between;gap:12px;font-size:1.05rem;font-weight:700;list-style:none;display:flex}details.faq summary:after{content:"+";color:var(--accent-ink);font-weight:800}details.faq[open] summary:after{content:"−"}details.faq p{color:var(--text-muted);margin:12px 0 0}.cta-banner{text-align:center;border:1px solid var(--border);background:radial-gradient(500px 220px at 50% 0%, #a6ff4d29, transparent 70%), var(--bg-elev);border-radius:24px;padding:56px 24px}.lesson-list{margin:0;padding:0;list-style:none}.lesson-list li a,.lesson-list li>div{color:var(--text);border-radius:10px;align-items:center;gap:12px;padding:12px 14px;display:flex}.lesson-list li a:hover{background:var(--bg-sunk);text-decoration:none}.lesson-list .num{background:var(--bg-sunk);width:28px;height:28px;font-size:.8rem;font-weight:800;font-family:var(--font-mono);border-radius:50%;flex-shrink:0;place-items:center;display:grid}.lesson-list .num.done{background:var(--accent);color:var(--accent-text)}.lesson-list .title{flex:1}.lesson-list .current{background:var(--accent-soft)}.lesson-list .planned{color:var(--text-muted)}.progress{background:var(--bg-sunk);border-radius:99px;height:8px;overflow:hidden}.progress>div{background:var(--grad);border-radius:99px;height:100%;transition:width .4s}.lesson-layout{grid-template-columns:290px minmax(0,1fr);gap:32px;padding:32px 0 64px;display:grid}.lesson-side{align-self:start;max-height:calc(100vh - 116px);position:sticky;top:92px;overflow:auto}.lesson-main{flex-direction:column;gap:28px;min-width:0;display:flex}@media (max-width:960px){.lesson-layout{grid-template-columns:1fr}.lesson-side{order:2;max-height:none;position:static}}.lesson-nav{flex-wrap:wrap;justify-content:space-between;gap:12px;display:flex}.lesson-nav .btn{white-space:normal;text-align:left}.video{aspect-ratio:16/9;border-radius:var(--radius);background:var(--code-bg);border:1px solid var(--border);position:relative;overflow:hidden}.video iframe,.video video{border:0;width:100%;height:100%;position:absolute;inset:0}.video-placeholder{text-align:center;color:var(--text-muted);place-items:center;padding:16px;display:grid;position:absolute;inset:0}.prose{font-size:1.05rem}.prose h2{margin-top:1.7em;font-size:clamp(1.35rem,3vw,1.7rem)}.prose h3{margin-top:1.4em}.prose ul,.prose ol{padding-left:1.4em}.prose li{margin:.3em 0}.prose code{background:var(--bg-sunk);color:var(--text);border-radius:6px;padding:.12em .42em;font-size:.9em}.prose pre,.code-block{background:var(--code-bg);color:var(--code-text);border:1px solid var(--border);border-radius:12px;margin:0 0 1em;padding:16px;font-size:.9rem;line-height:1.6;overflow-x:auto}.prose pre code,.code-block code{color:inherit;font-size:inherit;background:0 0;padding:0}.prose blockquote{border-left:4px solid var(--accent);background:var(--accent-soft);border-radius:0 10px 10px 0;margin:0 0 1em;padding:10px 18px}.prose blockquote p:last-child{margin:0}.prose table{border-collapse:collapse;width:100%;margin-bottom:1em;display:block;overflow-x:auto}.prose th,.prose td{border:1px solid var(--border);text-align:left;padding:8px 12px}.prose th{background:var(--bg-sunk)}.exercise,.quiz{flex-direction:column;gap:16px;display:flex}.exercise-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.exercise-head h2{margin:0;font-size:1.3rem}.workbench{grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:12px;display:grid}@media (max-width:900px){.workbench{grid-template-columns:1fr}}.wb-pane{border:1px solid var(--border);background:#282c34;border-radius:12px;flex-direction:column;min-width:0;display:flex;overflow:hidden}.wb-toolbar{background:#1c1f38;justify-content:space-between;align-items:center;gap:8px;padding:8px;display:flex}.wb-lang{color:#c9cbe0;font-size:.85rem;font-weight:700;font-family:var(--font-mono);padding-left:6px}.wb-actions{gap:6px;display:flex}.wb-toolbar .btn-ghost{color:#d7d9ea;background:0 0;border-color:#3b3e5a}.tabs{gap:4px;display:flex}.tab{color:#9ea1b8;font:inherit;cursor:pointer;font-size:.82rem;font-weight:800;font-family:var(--font-mono);background:0 0;border:0;border-radius:6px;padding:6px 10px}.tab.active{color:#fff;background:#383b5f}.editor{flex:1;min-height:260px;font-size:14px}.editor .cm-editor{height:100%}.editor-loading{color:#8f92a8;font-family:var(--font-mono);padding:16px}.wb-output{background:var(--code-bg)}.preview{border:0;border-bottom:1px solid var(--border);background:#fff;width:100%;min-height:240px}.console{font-family:var(--font-mono);flex:1;min-height:80px;max-height:360px;padding:12px;font-size:.86rem;overflow:auto}.console .muted{font-family:var(--font-sans)}.log{white-space:pre-wrap;word-break:break-word;margin:0;padding:2px 0}.log-error{color:var(--danger);background:var(--danger-soft);border-radius:8px;margin-top:6px;padding:8px 10px}.explain{background:var(--warn-soft);color:var(--text);font-family:var(--font-sans);border-radius:10px;margin:8px 0 0;padding:10px 12px;font-size:.9rem;line-height:1.5}.explain code,.nudge code{background:#7f7f7f33;border-radius:5px;padding:.05em .35em}.nudge{color:var(--text-muted);margin:4px 0 8px;font-size:.88rem}.tests{border-top:1px solid var(--border);padding:12px;font-size:.9rem}.tests-head{margin-bottom:6px;font-weight:800}.tests-pass .tests-head{color:var(--success)}.tests ul{margin:0;padding:0;list-style:none}.tests li{padding:3px 0}.tests li.pass span{color:var(--success)}.tests li.fail span{color:var(--danger)}.test-msg{color:var(--text-muted);font-family:var(--font-mono);margin-left:18px;font-size:.8rem}.table-wrap{overflow-x:auto}.result-table{border-collapse:collapse;font-size:.82rem}.result-table th,.result-table td{border:1px solid var(--border);text-align:left;padding:5px 10px}.result-table th{background:var(--bg-sunk)}.hint{background:var(--warn-soft);border-radius:10px;margin:0 0 8px;padding:10px 14px}.solution{margin-top:12px}.notice{background:var(--accent-soft);border-radius:10px;margin:0;padding:10px 14px}.exercise-help{flex-direction:column;gap:8px;display:flex}.celebrate{background:var(--success-soft);color:var(--text);border:1px solid #5ef08a59;border-radius:12px;padding:14px 16px;font-weight:700;animation:.35s ease-out pop}@keyframes pop{0%{opacity:0;transform:scale(.96)}to{opacity:1;transform:scale(1)}}.quiz-list{flex-direction:column;gap:18px;margin:0;padding-left:1.2em;display:flex}.quiz-prompt{margin-bottom:8px;font-weight:700}.quiz-options{gap:8px;display:grid}.quiz-opt{text-align:left;background:var(--bg-sunk);border:1px solid var(--border);font:inherit;color:var(--text);cursor:pointer;border-radius:12px;padding:11px 14px}.quiz-opt:hover:not(:disabled){border-color:var(--accent-ink)}.quiz-opt.chosen{border-color:var(--accent-ink);background:var(--accent-soft)}.quiz-opt.right{border-color:var(--success);background:var(--success-soft)}.quiz-opt.wrong{border-color:var(--danger);background:var(--danger-soft)}.quiz-opt:disabled{cursor:default}.quiz-explain{color:var(--text-muted);margin:8px 0 0;font-size:.92rem}.tutor{border:1px solid var(--border);background:var(--bg-sunk);border-radius:12px}.tutor-toggle{text-align:left;width:100%;font:inherit;color:var(--violet);cursor:pointer;background:0 0;border:0;padding:13px 16px;font-weight:800}.tutor-body{flex-direction:column;gap:10px;padding:0 16px 16px;display:flex}.tutor-msgs{flex-direction:column;gap:10px;max-height:380px;display:flex;overflow-y:auto}.msg{white-space:pre-wrap;word-break:break-word;border-radius:12px;max-width:92%;padding:10px 14px;font-size:.95rem}.msg-user{background:var(--violet);color:var(--on-violet);align-self:flex-end}.msg-assistant{background:var(--bg-elev);border:1px solid var(--border);align-self:flex-start}.msg .code-block{white-space:pre;margin:8px 0}.msg code{background:#7f7f7f33;border-radius:5px;padding:.1em .35em;font-size:.88em}.typing{color:var(--text-muted)}.chips{flex-wrap:wrap;gap:6px;display:flex}.chip{background:var(--bg-elev);border:1px solid var(--border);font:inherit;cursor:pointer;color:var(--text);border-radius:999px;padding:5px 12px;font-size:.82rem}.chip:hover:not(:disabled){border-color:var(--violet);color:var(--violet)}.tutor-form{align-items:flex-end;gap:8px;display:flex}.tutor-form textarea{resize:vertical;flex:1}.form{flex-direction:column;gap:14px;display:flex}label{flex-direction:column;gap:6px;font-size:.92rem;font-weight:700;display:flex}input,textarea,select{font:inherit;border:1px solid var(--border);background:var(--bg-sunk);color:var(--text);border-radius:12px;width:100%;padding:11px 13px;font-weight:400}input:focus,textarea:focus,select:focus{outline:2px solid var(--accent);outline-offset:1px;border-color:#0000}.form-error{background:var(--danger-soft);color:var(--danger);border-radius:10px;margin:0;padding:10px 14px}.auth-wrap{max-width:440px;margin:56px auto}.divider{color:var(--text-muted);align-items:center;gap:12px;margin:6px 0;font-size:.85rem;display:flex}.divider:before,.divider:after{content:"";background:var(--border);flex:1;height:1px}.filters{flex-wrap:wrap;gap:8px;display:flex}.filters a{border:1px solid var(--border);color:var(--text);background:var(--bg-elev);border-radius:999px;padding:6px 14px;font-size:.9rem}.filters a.active{background:var(--accent);color:var(--accent-text);border-color:var(--accent-ink);font-weight:700}.filters a:hover{border-color:var(--accent-ink);text-decoration:none}.q-row{border-bottom:1px solid var(--border);color:var(--text);flex-wrap:wrap;align-items:center;gap:8px 12px;padding:14px 16px;display:flex}.q-row:hover{background:var(--bg-sunk);text-decoration:none}.q-row .title{flex:200px;min-width:0;font-weight:600}.paywall{text-align:center;padding:48px 24px}.paywall .lock{font-size:2.4rem}.level-card{grid-template-columns:auto 1fr;align-items:center;gap:18px;display:grid}.level-emoji{background:var(--accent-soft);border-radius:20px;place-items:center;width:72px;height:72px;font-size:2.6rem;display:grid}.levels{flex-wrap:wrap;gap:6px;margin-top:10px;display:flex}.levels span{border:1px solid var(--border);color:var(--text-muted);border-radius:999px;padding:2px 8px;font-size:.75rem}.levels span.on{border-color:var(--accent-ink);color:var(--accent-ink)}.heat{grid-template-rows:repeat(7,11px);grid-auto-flow:column;gap:3px;padding-bottom:4px;display:grid;overflow-x:auto}.heat i{background:var(--bg-sunk);border-radius:3px;width:11px;height:11px;display:block}.heat i[data-l="1"]{background:var(--heat-1)}.heat i[data-l="2"]{background:var(--heat-2)}.heat i[data-l="3"]{background:var(--heat-3)}.heat i[data-l="4"]{background:var(--heat-4)}.big-stat{letter-spacing:-.02em;margin:4px 0 6px;font-size:2rem;font-weight:900}.site-footer{border-top:1px solid var(--border);margin-top:48px;padding:44px 0 28px}.footer-inner{flex-wrap:wrap;justify-content:space-between;gap:24px;margin-bottom:16px;display:flex}.footer-links{flex-wrap:wrap;gap:18px;display:flex}.footer-links a{color:var(--text-muted)}.pg-tabs{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.pg-tabs button{border:1px solid var(--border);background:var(--bg-elev);color:var(--text);font:inherit;cursor:pointer;border-radius:999px;padding:8px 16px;font-weight:700}.pg-tabs button.active{background:var(--accent);color:var(--accent-text);border-color:var(--accent-ink)}.playground .editor{min-height:420px}.playground .console{max-height:520px}.lesson-body>div>:last-child{margin-bottom:1em}.runner{border:1px solid var(--border);background:#282c34;border-radius:12px;margin:0 0 1.4em;font-size:.95rem;overflow:hidden}.runner .editor{min-height:0}.runner-out{background:var(--code-bg);color:var(--code-text);font-family:var(--font-mono);border-top:1px solid #2c3150;padding:10px 12px;font-size:.86rem}.runner-out .muted{font-family:var(--font-sans)}.runner .stepper.embedded{border-top:1px solid var(--border);border-radius:0;margin:0}.video-optional{margin:0}.video-optional summary{cursor:pointer;color:var(--text-muted);margin-bottom:10px;font-weight:700}.practice{flex-direction:column;gap:16px;display:flex}.step-dots{flex-wrap:wrap;gap:8px;display:flex}.step-dot{border:2px solid var(--border);background:var(--bg-sunk);width:36px;height:36px;color:var(--text);font:inherit;cursor:pointer;border-radius:50%;font-weight:800}.step-dot.on{border-color:var(--accent-ink)}.step-dot.done{background:var(--accent);color:var(--accent-text);border-color:var(--accent)}.step-dot:disabled{opacity:.4;cursor:not-allowed}.step{flex-direction:column;gap:14px;display:flex}.viz-wrap{margin:0 0 1.4em}.viz-wrap figcaption{margin-top:6px}.viz{border:1px solid var(--border);background:var(--bg-elev);border-radius:14px;flex-direction:column;gap:12px;padding:16px;font-size:.95rem;display:flex}.viz-title{font-weight:800}.viz-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:.72rem;font-weight:800;font-family:var(--font-mono);margin:6px 0 4px}.viz-readout{margin:0}.viz-controls{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.viz-controls input,.viz-controls select{width:auto;padding:6px 10px}.viz-log{background:var(--code-bg);color:var(--code-text);white-space:pre-wrap;border-radius:10px;margin:0;padding:10px 12px;font-size:.82rem}.viz-choices{grid-template-columns:repeat(auto-fit,minmax(min(100%,180px),1fr));gap:10px;display:grid}.viz-choice{gap:4px;font-size:.82rem;font-weight:600}.viz-choice select,.viz-choice input[type=range]{padding:6px 8px}.bits{flex-wrap:wrap;gap:6px;display:flex}.bit{border:2px solid var(--border);background:var(--bg-sunk);width:46px;color:var(--text);cursor:pointer;font:inherit;border-radius:10px;flex-direction:column;align-items:center;padding:8px 0 4px;display:flex}.bit span{font-family:var(--font-mono);font-size:1.3rem;font-weight:800}.bit small{color:var(--text-muted);font-size:.7rem}.bit.on{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.bit.on small{color:var(--accent-text)}.cells,.stack,.queue{flex-wrap:wrap;align-items:flex-end;gap:6px;display:flex}.stack{flex-direction:column;align-items:flex-start}.cell{border:2px solid var(--border);background:var(--bg-sunk);border-radius:10px;flex-direction:column;align-items:center;min-width:52px;padding:8px 10px 4px;transition:transform .2s,border-color .2s,opacity .2s;display:flex}.cell-val{font-family:var(--font-mono);font-size:1.05rem;font-weight:800}.cell-idx{font-family:var(--font-mono);color:var(--text-muted);font-size:.7rem}.cell.flash{border-color:var(--accent-ink);transform:translateY(-3px)}.cell.found{border-color:var(--success);background:var(--success-soft)}.cell.out{opacity:.3}.bars{background:var(--bg-sunk);border-radius:10px;align-items:flex-end;gap:4px;height:170px;padding:6px;display:flex}.bar{background:var(--link);border-radius:6px 6px 2px 2px;flex:1;min-height:18px;transition:height .25s,background .2s;position:relative}.bar span{text-align:center;color:#fff;font-size:.7rem;font-weight:800;position:absolute;bottom:2px;left:0;right:0}.bar.compare{background:var(--warn)}.bar.swap{background:var(--pink)}.bar.done{background:var(--success)}.buckets{gap:6px;display:grid}.bucket{background:var(--bg-sunk);border:1px solid #0000;border-radius:8px;flex-wrap:wrap;align-items:center;gap:8px;min-height:36px;padding:6px 8px;display:flex}.bucket.target{border-color:var(--accent-ink)}.bucket-idx{font-family:var(--font-mono);color:var(--text-muted);width:20px;font-weight:800}.pair{font-family:var(--font-mono);background:var(--bg-elev);border:1px solid var(--border);border-radius:999px;padding:2px 8px;font-size:.85rem}.pair.flash{border-color:var(--accent-ink)}.bigo{color:var(--text-muted);grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:center;gap:14px;display:grid}@media (max-width:640px){.bigo{grid-template-columns:1fr}}.flex-stage{background:var(--bg-sunk);border:2px dashed var(--border);border-radius:10px;min-height:170px;padding:10px}.flex-item{background:var(--violet);color:var(--on-violet);border-radius:8px;place-items:center;padding:6px;font-weight:800;display:grid}.box-stage{padding:4px 0;overflow-x:auto}.bm-margin{background:#ffd16640;border-radius:4px;display:inline-block;position:relative}.bm-border{border-style:solid;border-color:var(--pink);background:#5ef08a38;position:relative}.bm-content{text-align:center;background:#4da8ff59;padding:14px 6px;font-size:.85rem;font-weight:700}.bm-tag{font-size:.62rem;font-family:var(--font-mono);color:var(--text-muted);position:absolute;top:1px;left:4px}.join-grid{grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));gap:12px;display:grid}.result-table tr.match td{background:var(--success-soft)}.result-table tr.nomatch td{opacity:.45}.result-table tr.nullrow td{background:var(--warn-soft)}.stepper.embedded{border:0;border-radius:0}.stepper-grid{grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:12px;display:grid}@media (max-width:760px){.stepper-grid{grid-template-columns:1fr}}.stepper-code{background:var(--code-bg);color:var(--code-text);font-family:var(--font-mono);border-radius:10px;margin:0;padding:8px 0;font-size:.85rem;list-style:none;overflow-x:auto}.stepper-code li{white-space:pre;border-left:3px solid #0000;gap:10px;padding:1px 10px;display:flex}.stepper-code .ln{color:#5d6488;text-align:right;-webkit-user-select:none;user-select:none;min-width:1.6em}.stepper-code li.now{background:#a6ff4d29;border-left-color:#a6ff4d}.stepper-code li.ret{background:#b693ff2e;border-left-color:#b693ff}.stepper-code li.was{background:#ffffff0a;border-left-color:#5d6488}.stepper-side{min-width:0}.frames{flex-wrap:wrap;gap:6px;display:flex}.frames span{font-family:var(--font-mono);background:var(--bg-sunk);border:1px solid var(--border);border-radius:6px;padding:2px 8px;font-size:.8rem}.frames span.on{border-color:var(--accent-ink);color:var(--accent-ink);font-weight:700}.vars{border-collapse:collapse;width:100%;font-family:var(--font-mono);font-size:.82rem}.vars th,.vars td{text-align:left;border-bottom:1px solid var(--border);vertical-align:top;padding:4px 8px}.vars th{color:var(--text-muted);white-space:nowrap;width:1%;font-weight:600}.vars td{word-break:break-word}.vars tr.changed td{background:var(--accent-soft);color:var(--accent-ink);font-weight:700;transition:background .3s}.stepper-out{background:var(--code-bg);color:var(--code-text);white-space:pre-wrap;border-radius:8px;min-height:2.2em;margin:0;padding:8px 10px;font-size:.82rem}.stepper-controls{flex-wrap:wrap;align-items:center;gap:8px;display:flex}.stepper-note{background:var(--accent-soft);border-radius:10px;margin:0;padding:10px 12px}.key.now{color:#7ed321}.key.was{color:#5d6488}.wb-output,.runner-out{color:var(--code-text)}.wb-output .muted,.runner-out .muted,.wb-output .test-msg{color:#9aa3c2}.wb-output .tests{border-top-color:#2c3150}.wb-output .nudge{color:#b7bfdc}.wb-output .explain,.runner-out .explain{color:var(--code-text);background:#ffd16624}.prose .runner pre.log,.prose .runner-out pre{color:inherit;background:0 0;border:0;border-radius:0;margin:0;padding:2px 0}.prose .runner pre.log-error{color:#ff9b9b;background:#ff7b7b24;border-radius:8px;margin-top:6px;padding:8px 10px}.wb-output .log-error,.runner-out .log-error{color:#ff9b9b;background:#ff7b7b24}.wb-output .tests li.pass span,.wb-output .tests-pass .tests-head{color:#5ef08a}.wb-output .tests li.fail span{color:#ff8a8a}.wb-output .result-table th{background:#1a1f38}.wb-output .result-table th,.wb-output .result-table td{border-color:#2c3150}.runner-out .result-table th{background:#1a1f38}.runner-out .result-table th,.runner-out .result-table td{border-color:#2c3150}.stepper-code code{color:inherit;font-size:inherit;background:0 0;border-radius:0;padding:0}code,pre,.cm-editor,.cm-content,.terminal,.stepper-code{font-variant-ligatures:none;font-feature-settings:"liga" 0, "calt" 0}