:root{--bg: #f3f4f7;--surface: #e7e9ef;--surface-2: #dcdfe8;--ink: #14171f;--muted: #2f3647;--done: #1db954;--swap: #ff3d6e;--write: #ff7a1a;--m: clamp(16px, 3vw, 40px);--gap: clamp(8px, 1vw, 14px);--step-small: clamp(.9375rem, .9rem + .1vw, 1rem);--step-body: clamp(1.0625rem, 1rem + .25vw, 1.1875rem);--step-lead: clamp(1.25rem, 1.1rem + .7vw, 1.625rem);--step-fig: clamp(1.5rem, 1rem + 1.8vw, 2.6rem);--step-head: clamp(2.5rem, 1.2rem + 5vw, 5.5rem);--font: "Chivo", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--g: #2b59ff;--g-ink: #ffffff;--cmp: #ffd426;color-scheme:light}@media(prefers-color-scheme:dark){:root:not([data-theme=light]){--bg: #0e1116;--surface: #171b22;--surface-2: #212733;--ink: #f3f4f7;--muted: #c3cad6;color-scheme:dark}}:root[data-theme=dark]{--bg: #0e1116;--surface: #171b22;--surface-2: #212733;--ink: #f3f4f7;--muted: #c3cad6;color-scheme:dark}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font:400 var(--step-body) / 1.4 var(--font);letter-spacing:-.01em;font-variant-numeric:tabular-nums}a{color:inherit}p{margin:0 0 .8em;max-width:62ch}.muted{color:var(--muted)}.small{font-size:var(--step-small)}h1,h2,h3,h4{font-family:var(--font);margin:0;text-wrap:balance}h1,h2{font-weight:900;text-transform:uppercase;letter-spacing:-.05em;line-height:.9}h1{font-size:var(--step-head)}h2{font-size:var(--step-fig);margin-bottom:.5em}h3{font-size:var(--step-lead);font-weight:900;line-height:1.05;letter-spacing:-.03em}h4{font-size:var(--step-body);font-weight:700;margin-bottom:.5em}.lead{font-size:var(--step-lead);line-height:1.25;font-weight:400;max-width:34ch}:focus-visible{outline:3px solid var(--ink);outline-offset:3px}.field :focus-visible{outline-color:var(--g-ink)}.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px var(--m);background:var(--bg);position:sticky;top:0;z-index:20}.brand{font-weight:900;text-transform:uppercase;letter-spacing:-.04em;font-size:1.25rem;text-decoration:none}.topbar-actions{display:flex;gap:8px}.btn{font:700 var(--step-body) / 1 var(--font);letter-spacing:-.01em;min-height:44px;padding:0 20px;border:0;border-radius:0;background:var(--surface-2);color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;text-decoration:none;transition:transform .12s ease-out,background .12s}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(1px)}.btn.primary{background:var(--ink);color:var(--bg)}.btn.solid{background:var(--g-ink);color:var(--g)}.btn.small{min-height:36px;padding:0 14px;font-size:var(--step-small)}.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}.field{background:var(--g);color:var(--g-ink);padding:clamp(40px,6vw,88px) var(--m)}.field.plain{background:var(--bg);color:var(--ink);padding-top:var(--m)}.field.head{display:grid;gap:18px;padding-bottom:clamp(36px,5vw,72px)}.field.head .lead{max-width:40ch}.back{font-weight:700;text-decoration:none;width:fit-content;opacity:.9}.back:hover{text-decoration:underline;text-underline-offset:4px}.head-side{display:flex;flex-wrap:wrap;gap:16px;align-items:center}.block{padding:clamp(40px,6vw,88px) var(--m)}.block.deep{background:var(--surface)}.block[hidden]{display:none}main{min-height:70vh}.masked{display:block}.mask{display:block;overflow:hidden;padding-bottom:.08em;margin-bottom:-.08em}.rise{display:block;animation:rise .9s cubic-bezier(.16,1,.3,1) both;animation-delay:calc(var(--i) * .11s)}@keyframes rise{0%{transform:translateY(105%)}to{transform:none}}.rise-in{animation:fade-up .7s ease-out .25s both}@keyframes fade-up{0%{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}.hero{display:grid}.mosaic{display:grid;grid-template-columns:repeat(6,1fr);grid-template-rows:repeat(2,minmax(110px,19vh))}.tile-big{grid-column:span 2;grid-row:span 2;background:var(--g);color:var(--g-ink);padding:var(--m);display:flex;flex-direction:column;justify-content:space-between;gap:12px}.tile-big .stage{flex:1;background:transparent;padding:0}.tile-cap{margin:0;font-weight:700}.tile-fig{background:var(--g);color:var(--g-ink);padding:16px 18px;display:flex;flex-direction:column;justify-content:space-between;text-decoration:none;transition:transform .15s ease-out}.tile-fig:hover{transform:translateY(-4px)}.tile-fig b{font-size:var(--step-fig);font-weight:900;letter-spacing:-.05em;line-height:.95}.tile-fig span{font-weight:700;font-size:var(--step-body);line-height:1.15}.hero-copy{display:grid;gap:clamp(20px,3vw,40px);padding:clamp(32px,5vw,72px) var(--m)}.hero-copy h1{font-size:clamp(2.5rem,1rem + 7vw,7.5rem)}.hero-side{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:20px var(--m)}.hero-side .actions{margin:0}.how{display:flex;align-items:flex-end;gap:var(--gap);padding:0 var(--m)}.how-tile{background:var(--g);color:var(--g-ink);padding:22px;flex:1 1 0}.how-tile h3{font-size:var(--step-fig);text-transform:uppercase;letter-spacing:-.05em;margin-bottom:.4em}.how-tile p{margin:0}.how-tile.tile-s{min-height:200px}.how-tile.tile-m{min-height:280px}.how-tile.tile-l{min-height:360px}.section-title{padding:clamp(56px,8vw,120px) var(--m) var(--m);margin:0}.chapter{min-height:70svh;display:grid;align-content:space-between;gap:40px}.chapter-head{display:grid;gap:20px}.chapter-head h2{font-size:var(--step-head);margin:0}.chapter-head h2 a{text-decoration:none}.chapter-side{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:end;gap:16px var(--m)}.tiles{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:var(--gap)}.tile{display:grid;gap:8px;align-content:space-between;min-height:170px;padding:18px;text-decoration:none;background:color-mix(in srgb,var(--g-ink) 12%,transparent);transition:transform .15s ease-out,background .15s}.tile:hover{background:color-mix(in srgb,var(--g-ink) 22%,transparent);transform:translateY(-4px)}.tile:active{transform:translateY(0)}.tile b{font-size:var(--step-lead);font-weight:900;letter-spacing:-.04em;line-height:1}.tile-sum{font-size:var(--step-body);line-height:1.3}.tile-cx{font-weight:700;display:flex;align-items:center;gap:8px}em.live{font-style:normal;font-weight:700;padding:3px 10px;background:var(--g-ink);color:var(--g)}.tiles.big{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}.tile.fill{background:var(--g);color:var(--g-ink);min-height:220px}.tile.fill:hover{background:var(--g);filter:brightness(1.06)}.cx-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:var(--gap);margin-top:18px}.cx{display:grid;gap:4px;background:color-mix(in srgb,var(--g-ink) 12%,transparent);padding:16px 18px}.cx small{font-size:var(--step-small);font-weight:700}.cx b{font-size:var(--step-fig);font-weight:900;letter-spacing:-.05em;line-height:1;overflow-wrap:anywhere}.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--gap) var(--m);margin-top:8px}.facts p b{display:block;font-size:var(--step-small);margin-bottom:2px}.visualizer,.race{--bar: var(--g)}.vis-controls{display:flex;flex-wrap:wrap;gap:12px 18px;align-items:end;margin-bottom:16px}.vis-controls label{display:grid;font-size:var(--step-small);font-weight:700;gap:4px}select,input[type=number]{font:400 var(--step-body) var(--font);min-height:44px;padding:0 12px;border:0;border-radius:0;background:var(--surface-2);color:var(--ink)}input[type=range]{accent-color:var(--g);height:44px}input.target{width:96px}.stage{height:clamp(220px,34vh,340px);display:flex;align-items:flex-end;gap:3px;padding:14px;background:var(--surface)}.stage .cell{flex:1;min-width:2px;background:var(--g);display:flex;justify-content:center;align-items:flex-start;transition:background .08s}.stage .cell span{font-size:var(--step-small);font-weight:700;margin-top:-1.4em;color:var(--ink)}.stage.live .cell{background:var(--g-ink)}.stage.live .cell.cmp,.stage.live .cell.write,.stage.live .cell.swap{background:var(--cmp)}.stage.live .cell.done{background:var(--g-ink);opacity:.7}.stage.cells{height:auto;min-height:120px;flex-wrap:wrap;align-items:stretch;align-content:center;gap:6px}.stage.cells .cell{flex:none;width:56px;padding:8px 0;text-align:center;background:var(--surface-2);flex-direction:column;align-items:center}.stage.cells .cell b{font-size:var(--step-lead);font-weight:900;letter-spacing:-.04em}.stage.cells .cell small{font-size:var(--step-small);color:var(--muted)}.cell.dim{opacity:.25}.cell.done{background:var(--done)!important}.cell.pivot{background:var(--ink)!important}.cell.cmp{background:var(--cmp)!important;color:#14171f}.cell.write{background:var(--write)!important}.cell.swap{background:var(--swap)!important}.cell.found{background:var(--done)!important;color:#06210f}.cell.found small{color:#06210f}.legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:12px}.legend-item{display:inline-flex;align-items:center;gap:8px;font-size:var(--step-small);font-weight:700}.legend-item i{width:14px;height:14px;background:var(--g);display:inline-block}.sw.cmp{background:var(--cmp)!important}.sw.swap{background:var(--swap)!important}.sw.write{background:var(--write)!important}.sw.pivot{background:var(--ink)!important}.sw.done,.sw.found{background:var(--done)!important}.vis-msg{min-height:1.6em;margin:14px 0 6px;font-weight:700;font-size:var(--step-lead);letter-spacing:-.02em}.vis-transport{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.vis-transport input[type=range]{flex:1;min-width:140px}.vis-stats{display:flex;flex-wrap:wrap;gap:6px 28px;margin-top:10px;font-weight:700}.vis-stats b{font-size:var(--step-lead);font-weight:900;letter-spacing:-.04em}.race-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:var(--gap)}.race-tile{background:var(--surface);display:grid;grid-template-rows:auto 1fr auto;transition:transform .2s}.race-tile header{background:var(--r);color:var(--ri);padding:10px 14px;display:flex;justify-content:space-between;gap:8px;font-weight:900;letter-spacing:-.03em}.race-tile header a{text-decoration:none}.race-badge{font-weight:900}.race-tile .stage.mini{height:150px;padding:8px;gap:1px;background:transparent}.race-tile .stage.mini .cell{background:var(--r)}.race-tile footer{padding:10px 14px;display:flex;align-items:baseline;gap:8px;font-weight:700}.race-steps{font-size:var(--step-fig);font-weight:900;letter-spacing:-.05em;line-height:1}.race-tile.winner{transform:translateY(-6px)}.race-tile.winner header{background:var(--done)}.race-tile.finished{opacity:.8}.race-verdict{min-height:1.5em;margin-top:14px;font-size:var(--step-lead);font-weight:900;letter-spacing:-.03em;max-width:none}.tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.tabs button{font:700 var(--step-body) var(--font);min-height:44px;padding:0 18px;border:0;background:var(--surface-2);color:var(--ink);cursor:pointer;transition:transform .12s}.tabs button:hover{transform:translateY(-2px)}.tabs button[aria-selected=true]{background:var(--g);color:var(--g-ink)}.tabs button.missing{opacity:.45}.code-body{position:relative}.code-body pre,pre.theory{margin:0;padding:18px;background:var(--bg);overflow:auto;max-height:560px;font:.875rem/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}pre.theory{white-space:pre-wrap;max-height:none;font-family:var(--font);font-size:var(--step-body);background:var(--surface)}.code-body .copy{position:absolute;top:8px;right:8px;z-index:1}.hljs-keyword,.hljs-built_in{color:#c43b73;font-weight:700}.hljs-string{color:#138a45}.hljs-comment{color:var(--muted)}.hljs-number,.hljs-literal{color:#d2600c}.hljs-title,.hljs-function{color:#2b59ff}.hljs-type,.hljs-class{color:#0a8f8a}@media(prefers-color-scheme:dark){:root:not([data-theme=light]) .hljs-keyword,:root:not([data-theme=light]) .hljs-built_in{color:#ff8fb8}:root:not([data-theme=light]) .hljs-string{color:#6fe0a0}:root:not([data-theme=light]) .hljs-number,:root:not([data-theme=light]) .hljs-literal{color:#ffb070}:root:not([data-theme=light]) .hljs-title,:root:not([data-theme=light]) .hljs-function{color:#9db9ff}:root:not([data-theme=light]) .hljs-type,:root:not([data-theme=light]) .hljs-class{color:#5fe0d8}}:root[data-theme=dark] .hljs-keyword,:root[data-theme=dark] .hljs-built_in{color:#ff8fb8}:root[data-theme=dark] .hljs-string{color:#6fe0a0}:root[data-theme=dark] .hljs-number,:root[data-theme=dark] .hljs-literal{color:#ffb070}:root[data-theme=dark] .hljs-title,:root[data-theme=dark] .hljs-function{color:#9db9ff}:root[data-theme=dark] .hljs-type,:root[data-theme=dark] .hljs-class{color:#5fe0d8}.chips{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:10px 16px;background:var(--surface-2);text-decoration:none;font-weight:700;transition:transform .12s}.chip:hover{transform:translateY(-2px)}.chip.accent{background:var(--g);color:var(--g-ink)}.table-wrap{overflow-x:auto}.cmp-table{border-collapse:collapse;width:100%;font-size:var(--step-body)}.cmp-table th,.cmp-table td{text-align:left;padding:12px 14px;vertical-align:top}.cmp-table th{font-size:var(--step-small);font-weight:700;color:var(--muted);white-space:nowrap}.cmp-table tbody tr:nth-child(odd){background:var(--surface)}.cmp-table td:nth-child(n+3):nth-child(-n+6){font-weight:700;white-space:nowrap}.cmp-table td.when{min-width:220px;color:var(--muted)}.cmp-table a{font-weight:900;text-decoration:none;letter-spacing:-.02em}.dot{width:12px;height:12px;display:inline-block;margin-right:10px}.chart-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:28px var(--m);margin-bottom:28px}.bar-row{display:grid;grid-template-columns:minmax(96px,150px) 1fr 56px;gap:10px;align-items:center;margin:6px 0;font-size:var(--step-small);font-weight:700}.bar-track{background:var(--surface);height:22px}.bar-fill{display:block;height:100%}.bar-value{text-align:right}.line-chart{width:100%;height:auto;max-width:760px}.line-chart .grid{stroke:var(--surface-2);stroke-width:1}.line-chart .tick,.line-chart .axis{fill:var(--muted);font-size:11px;font-family:var(--font)}.callout{margin-top:24px;padding:18px 20px;background:var(--g);color:var(--g-ink);font-size:var(--step-lead);line-height:1.25;max-width:70ch}.bench-out h4{margin-top:8px}.footer{padding:clamp(48px,7vw,100px) var(--m) var(--m);background:var(--surface)}.mark{display:flex;align-items:flex-end;gap:4px;height:clamp(120px,28vw,340px)}.mark span{flex:1;display:flex;align-items:flex-start;justify-content:center;font-weight:900;font-size:clamp(2rem,1rem + 10vw,10rem);line-height:.9;letter-spacing:-.05em;padding-top:.04em;overflow:hidden}.footer-cols{display:grid;grid-template-columns:8fr 4fr;gap:var(--m);margin-top:48px}.footer-links{display:grid;grid-template-columns:repeat(4,1fr);gap:10px var(--gap);font-size:var(--step-small);font-weight:700}.footer-links a{text-decoration:none}.footer-links a:hover{text-decoration:underline;text-underline-offset:4px}.footer-cols p{color:var(--muted);font-size:var(--step-small);margin:0}@media(max-width:860px){.mosaic{grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(3,minmax(120px,18vh))}.tile-big{grid-column:span 3;grid-row:span 1}.footer-cols{grid-template-columns:1fr}.how{flex-direction:column;align-items:stretch}.how-tile.tile-s,.how-tile.tile-m,.how-tile.tile-l{min-height:0}.footer-links{grid-template-columns:repeat(2,1fr)}.chapter{min-height:0}}@media(max-width:560px){.stage .cell span{display:none}.stage{height:200px}.stage.cells .cell{width:44px}.topbar{padding-block:8px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}.tile-pic{margin:0;grid-row:span 2;display:grid;grid-template-rows:1fr auto;background:color-mix(in srgb,var(--g-ink) 12%,transparent);min-height:340px}.tile-pic img{width:100%;height:100%;object-fit:cover;display:block;min-height:0}.tile-pic figcaption,.stats-pic figcaption{padding:12px 16px;font-weight:700;font-size:var(--step-small);line-height:1.25}.stats{display:grid;grid-template-columns:2fr 1fr;margin-top:clamp(40px,6vw,96px)}.stats-pic{margin:0;display:grid;grid-template-rows:1fr auto;background:var(--surface);min-height:420px}.stats-pic img{width:100%;height:100%;object-fit:cover;display:block;min-height:0}.stats-col{display:grid;grid-template-rows:1fr 1fr}.stat-tile{background:var(--g);color:var(--g-ink);padding:28px;display:flex;flex-direction:column;gap:8px}.stat-tile b{font-size:clamp(3.5rem,2rem + 5.6vw,6rem);font-weight:900;letter-spacing:-.06em;line-height:.9}.stat-tile p{font-size:var(--step-lead);line-height:1.2;max-width:18ch;margin:0}.credits{margin:28px 0 0;color:var(--muted);font-size:var(--step-small)}@media(max-width:860px){.stats{grid-template-columns:1fr}.stats-col{grid-template-columns:1fr 1fr;grid-template-rows:auto}}.rv{opacity:0;transform:translateY(24px);transition:opacity .6s ease-out var(--d, 0ms),transform .6s cubic-bezier(.16,1,.3,1) var(--d, 0ms)}.rv.in{opacity:1;transform:none}.tile.rv.in:hover{transform:translateY(-4px);transition-delay:0ms}.credits{display:grid;gap:6px}.credits ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:4px var(--m)}.credits b{color:var(--ink)}@media(max-width:860px){.mosaic{grid-template-rows:minmax(96px,14vh) repeat(2,minmax(100px,14vh))}.tile-fig:nth-child(n+8){display:none}.hero-copy{order:-1}.tile-fig b{font-size:var(--step-lead)}.hero-copy{padding-block:56px 32px}}@media(prefers-reduced-motion:reduce){.rv{opacity:1;transform:none}}.head-split{display:grid;grid-template-columns:1fr 1fr;gap:var(--m);align-items:start}.notice{font-size:var(--step-lead);line-height:1.25;max-width:44ch;margin:0}.notice b{margin-right:.5em}@media(max-width:860px){.head-split{grid-template-columns:1fr}}.langs{display:inline-flex;gap:4px}.lang{font:700 var(--step-small) / 1 var(--font);min-height:36px;padding:0 12px;display:inline-flex;align-items:center;gap:8px;border:0;border-radius:0;background:var(--surface-2);color:var(--ink);cursor:pointer;opacity:.7;transition:transform .12s,opacity .12s}.lang:hover{opacity:1;transform:translateY(-2px)}.lang[aria-pressed=true]{background:var(--ink);color:var(--bg);opacity:1}.flag{display:block;width:24px;height:16px}.footer-cols p a{text-decoration:underline;text-underline-offset:3px}@media(max-width:560px){.topbar-actions{gap:4px}.topbar-actions .btn.small{padding:0 8px}.lang{padding:0 8px;gap:6px}}@media(max-width:560px){.topbar .repo{display:none}.brand{font-size:1.05rem}}.btn{white-space:nowrap}
