:root{color-scheme:light;--ink: #172126;--muted: #5a6870;--paper: #f7f4ed;--surface: #fffdf8;--line: #d8d0c2;--accent: #006d77;--accent-strong: #004b54;--warm: #c95d31;--gold: #e1a92f;--shadow: 0 24px 70px rgba(23, 33, 38, .14);--content-column: 1040px;--edge-padding: clamp(18px, 4vw, 56px)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;line-height:1.6}a{color:inherit}.site-header{position:sticky;top:0;z-index:20;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:16px max(var(--edge-padding),calc((100% - var(--content-column)) / 2));border-bottom:1px solid rgba(216,208,194,.78);background:#f7f4edeb;backdrop-filter:blur(16px)}.brand{display:flex;align-items:center;gap:12px;text-decoration:none}.brand-mark{display:grid;width:42px;height:42px;place-items:center;border:2px solid var(--ink);background:var(--gold);color:var(--ink);font-weight:800}.brand strong,.brand small{display:block}.brand small{color:var(--muted);font-size:.78rem}.nav-links{display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end}.nav-links a{min-height:38px;padding:8px 12px;border-radius:6px;color:var(--muted);font-weight:700;text-decoration:none}.nav-links a:hover,.nav-links a:focus-visible{background:#006d7717;color:var(--accent-strong)}h1,h2,h3,p{margin-top:0}h1{margin-bottom:22px;font-size:clamp(3rem,7vw,6.8rem);line-height:.95;letter-spacing:0}h2{margin-bottom:12px;font-size:clamp(2rem,4vw,3.3rem);line-height:1;letter-spacing:0}.eyebrow{margin:0 0 12px;color:var(--warm);font-size:.78rem;font-weight:800;letter-spacing:0;text-transform:uppercase}.section{padding:clamp(34px,5vw,72px) clamp(18px,4vw,56px)}.articles-home{min-height:calc(100vh - 75px)}.article-index-hero{max-width:calc(var(--content-column) + 2 * var(--edge-padding));margin-inline:auto;padding:clamp(54px,8vw,110px) var(--edge-padding) clamp(18px,3vw,34px)}.article-index-hero h1{margin-bottom:18px;font-size:clamp(3.25rem,9vw,7.2rem)}.article-index-hero p:last-child{max-width:720px;color:var(--muted);font-size:clamp(1.05rem,1.8vw,1.3rem)}.article-index-section,.feed-section{padding-top:18px}.home-columns{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,4vw,56px);max-width:1040px;margin-inline:auto}.home-column{display:flex;flex-direction:column}.home-column .section-label{flex-shrink:0;margin-inline:0}.home-column .section-label h2{font-size:clamp(1.5rem,3vw,2.2rem)}.home-column .feed-list{flex-grow:1;align-content:start;margin-inline:0}.home-column .feed-more-link{flex-shrink:0;margin-inline:0}.home-column .article-preview h2,.home-column .feed-link-post h2{max-width:620px;margin-bottom:10px;font-size:clamp(1.35rem,2.2vw,1.9rem)}.home-column .article-preview p{max-width:620px}.article-list,.feed-list{display:grid;max-width:1040px;margin-inline:auto;border-top:1px solid var(--line)}.article-preview,.feed-item{padding:clamp(24px,4vw,42px) 0;border-bottom:1px solid var(--line)}.article-preview-meta{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px;color:var(--muted);font-size:.82rem;font-weight:800;text-transform:uppercase}.article-preview h2,.feed-link-post h2{max-width:820px;margin-bottom:12px;font-size:clamp(1.8rem,4vw,3.1rem);line-height:1.12}.article-preview h2 a,.feed-link-post h2 a{color:var(--ink);text-decoration:none}.article-preview h2 a:hover,.article-preview h2 a:focus-visible,.feed-link-post h2 a:hover,.feed-link-post h2 a:focus-visible{color:var(--accent-strong)}.article-preview p{max-width:780px;color:var(--muted);font-size:clamp(1rem,1.5vw,1.14rem)}.article-preview a{color:var(--accent-strong);font-weight:800;text-decoration-thickness:2px}.article-preview a:hover,.article-preview a:focus-visible{color:var(--accent-strong)}.side-projects-section{padding-top:12px}.demo-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:1040px;margin-inline:auto}.demo-card{padding:clamp(20px,3vw,30px);border:1px solid var(--line);border-radius:8px;background:var(--surface)}.demo-card time{display:block;margin-bottom:10px;color:var(--muted);font-size:.82rem;font-weight:800;text-transform:uppercase}.demo-card h3{margin-bottom:10px;font-size:clamp(1.45rem,3vw,2.2rem);line-height:1.1}.demo-card h3 a{color:var(--ink);text-decoration:none}.demo-card p{color:var(--muted)}.demo-card div{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.demo-card a{display:inline-flex;align-items:center;min-height:38px;padding:8px 11px;border:1px solid var(--line);border-radius:6px;color:var(--accent-strong);font-weight:800;text-decoration:none}.demo-card a:hover,.demo-card a:focus-visible{border-color:var(--accent);color:var(--ink)}.demo-card h3 a{display:inline;min-height:0;padding:0;border:0;border-radius:0;color:var(--ink);font-weight:inherit;text-decoration:none}.demo-card h3 a:hover,.demo-card h3 a:focus-visible{color:var(--accent-strong)}.regular-reading-section{padding-top:12px}.regular-reading-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(24px,5vw,64px);max-width:1040px;margin-inline:auto;border-top:1px solid var(--line);padding-top:clamp(20px,3vw,30px)}.regular-reading-list h3{margin-bottom:14px;color:var(--muted);font-size:.82rem;font-weight:800;text-transform:uppercase}.regular-reading-list ul{display:grid;gap:10px;margin:0;padding:0;list-style:none}.regular-reading-list a{color:var(--accent-strong);font-weight:800;text-decoration-thickness:2px}.links-section{padding-top:12px}.section-label{max-width:1040px;margin-inline:auto;margin-bottom:18px}.section-label h2{font-size:clamp(1.8rem,4vw,3rem)}.section-label h2 a{color:var(--ink);text-decoration:none}.section-label h2 a:hover,.section-label h2 a:focus-visible{color:var(--accent-strong)}.link-post{padding:clamp(20px,3vw,30px);border:1px solid var(--line);border-radius:8px;background:var(--surface)}.feed-link-post{padding:clamp(24px,4vw,42px) 0;border-top:0;border-right:0;border-left:0;border-radius:0;background:transparent}.feed-link-post .daily-link-list{margin-top:20px}.feed-item-hidden{display:none}.feed-more-link{max-width:1040px;margin-inline:auto;margin-top:22px}.feed-more-link a{color:var(--accent-strong);font-weight:800;text-decoration-thickness:2px}.link-post h3{margin-bottom:10px;font-size:clamp(1.45rem,3vw,2.2rem);line-height:1.1}.link-post p{max-width:760px;color:var(--muted)}.link-post-items{margin-top:20px;padding-left:22px}.link-post-items li+li{margin-top:12px}.link-post-items a{color:var(--accent-strong);font-weight:800}.link-post-items p{margin:4px 0 0;color:var(--muted)}.link-post-items a:hover,.link-post-items a:focus-visible{color:var(--ink)}.continue-link{display:inline-flex;margin-top:18px;color:var(--accent-strong);font-weight:800;text-decoration-thickness:2px}.link-page-shell{padding:clamp(36px,6vw,74px) clamp(18px,4vw,56px)}.link-page-content{max-width:920px;margin:0 auto;padding:clamp(24px,5vw,54px);border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.link-page-content .back-link{display:inline-flex;margin-bottom:26px;color:var(--accent-strong);font-weight:800}.link-page-content h1{margin-bottom:30px;font-size:clamp(2.4rem,6vw,4.6rem)}.daily-link-list{display:grid;gap:18px;margin:0;padding-left:22px}.daily-link-list li{padding-bottom:18px;border-bottom:1px solid var(--line)}.daily-link-list li:last-child{border-bottom:0}.daily-link-list a{color:var(--accent-strong);font-weight:800}.daily-link-group{display:grid;gap:6px}.daily-link-entry{display:block}.daily-link-prefix{color:var(--muted);font-weight:600;margin-right:.25rem}.daily-link-note{margin:8px 0 0;color:var(--muted)}.daily-link-note>:first-child{margin-top:0}.daily-link-note>:last-child{margin-bottom:0}.daily-link-note p{margin:0 0 1em}.load-sentinel{min-height:1px}.site-footer{display:flex;gap:16px;align-items:center;justify-content:space-between;padding:28px max(var(--edge-padding),calc((100% - var(--content-column)) / 2));background:var(--ink);color:#fffdf8}.site-footer div{display:flex;flex-wrap:wrap;gap:14px}.site-footer a{color:#fffdf8c7}.about-shell{padding:clamp(44px,7vw,92px) clamp(18px,4vw,56px)}.about-hero{max-width:1120px;margin-inline:auto;margin-bottom:clamp(34px,5vw,62px)}.about-hero h1{margin-bottom:20px;font-size:clamp(3rem,8vw,6.6rem)}.about-hero p{max-width:780px;color:var(--muted);font-size:clamp(1.05rem,1.8vw,1.3rem)}.about-links{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}.about-links a{display:inline-flex;align-items:center;min-height:40px;padding:9px 12px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--accent-strong);font-weight:800;text-decoration:none}.about-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;max-width:1120px;margin-inline:auto}.about-grid article{padding:clamp(20px,3vw,30px);border:1px solid var(--line);border-radius:8px;background:var(--surface)}.about-grid h2{font-size:clamp(1.45rem,2.5vw,2.15rem)}.about-grid p,.about-grid li{color:var(--muted)}.about-grid ul{margin:0;padding-left:20px}.about-grid li+li{margin-top:12px}.article-shell{padding:clamp(36px,6vw,74px) clamp(18px,4vw,56px)}.article-layout{display:grid;grid-template-columns:minmax(0,820px) minmax(220px,300px);gap:clamp(22px,4vw,44px);align-items:start;justify-content:center}.article-content{max-width:820px;margin:0;padding:clamp(24px,5vw,54px);border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow)}.article-content .back-link{display:inline-flex;margin-bottom:26px;color:var(--accent-strong);font-weight:800}.article-content h1{margin-bottom:22px;font-size:clamp(2.4rem,6vw,4.6rem);line-height:.98}.article-content h2{margin-top:42px;font-size:clamp(1.55rem,3vw,2.25rem)}.article-content p,.article-content li{color:var(--muted);font-size:1.04rem}.article-content a{color:var(--accent-strong);font-weight:700}.article-content code{font-family:JetBrains Mono,monospace;font-size:.94em}.article-content p code,.article-content li code{padding:2px 5px;border-radius:4px;background:#006d7717;color:var(--ink)}.article-content pre{overflow-x:auto;padding:18px;border-radius:8px;background:#172126;color:#f8d36f}.article-content pre code{color:inherit;white-space:pre}.article-content figure{margin:34px 0}.article-content img{display:block;max-width:100%;height:auto;border:1px solid var(--line);border-radius:8px}.article-content .narrow-figure img{max-width:320px;margin:0 auto}.article-content details{margin:28px 0;padding:18px;border:1px solid var(--line);border-radius:8px;background:#f7f4ed}.article-content summary{color:var(--ink);font-weight:800;cursor:pointer}.inline-footnote-marker{display:inline;margin:0;padding:0 2px;border:0;background:transparent;color:var(--accent-strong);font:inherit;font-weight:800;text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:2px;cursor:pointer}.inline-footnote-marker:hover,.inline-footnote-marker:focus-visible{color:var(--ink)}.inline-footnote-popover{position:absolute;z-index:50;width:min(560px,calc(100vw - 24px));padding:16px 38px 16px 16px;border:1px solid var(--line);border-radius:8px;background:var(--surface);box-shadow:var(--shadow);color:var(--muted);font-size:.95rem;line-height:1.45}.inline-footnote-popover a{color:var(--accent-strong);font-weight:700}.inline-footnote-popover p{margin:0 0 .75em}.inline-footnote-popover p:last-child{margin-bottom:0}.inline-footnote-close{position:absolute;top:8px;right:8px;display:grid;width:26px;height:26px;place-items:center;border:1px solid var(--line);border-radius:6px;background:#f7f4ed;color:var(--ink);font:inherit;font-size:.82rem;font-weight:800;line-height:1;cursor:pointer}.inline-footnote-close:hover,.inline-footnote-close:focus-visible{border-color:var(--accent);color:var(--accent-strong)}.return-widget{margin-top:24px;padding:clamp(18px,3vw,24px);border:1px solid var(--line);border-radius:8px;background:var(--surface)}.return-widget-header{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.7fr);gap:18px;align-items:start;margin-bottom:20px}.return-widget-header h2{margin:0;font-size:clamp(1.35rem,2.8vw,2rem)}.return-widget-header p:last-child{margin:0}.return-widget-grid{display:grid;grid-template-columns:minmax(0,1fr) 210px;gap:20px}.return-chart{display:grid;gap:14px;align-content:center}.return-bar{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:8px 12px;align-items:center}.return-bar span{grid-column:1 / -1;display:block;width:0;height:16px;border-radius:999px;background:var(--accent);transition:width .16s ease}.return-bar:nth-child(2) span{background:var(--warm)}.return-bar:nth-child(3) span{background:var(--gold)}.return-bar strong{color:var(--ink)}.return-bar output{color:var(--accent-strong);font-family:JetBrains Mono,monospace;font-weight:800}.return-controls{display:grid;gap:10px}.return-controls label{display:grid;grid-template-columns:1fr auto;gap:5px;color:var(--muted);font-size:.82rem;font-weight:800}.return-controls input{grid-column:1 / -1;width:100%;accent-color:var(--accent)}.return-controls output{color:var(--ink);font-family:JetBrains Mono,monospace;font-weight:800}.return-widget-note{margin:18px 0 0;padding-top:14px;border-top:1px solid var(--line)}.return-widget-note strong{color:var(--accent-strong);font-family:JetBrains Mono,monospace}.subscription-widget{margin-top:24px;padding:clamp(18px,3vw,24px);border:1px solid var(--line);border-radius:8px;background:var(--surface)}.subscription-widget-header{margin-bottom:20px}.subscription-widget-header h2{margin:0;font-size:clamp(1.35rem,2.8vw,2rem)}.subscription-summary{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-bottom:20px}.subscription-summary div{min-width:0;padding:14px;border:1px solid var(--line);border-radius:8px;background:#f7f4ed}.subscription-summary span,.subscription-summary strong{display:block}.subscription-summary span{color:var(--muted);font-size:.76rem;font-weight:800;text-transform:uppercase}.subscription-summary strong{margin-top:4px;color:var(--accent-strong);font-family:JetBrains Mono,monospace;font-size:clamp(1.05rem,2.5vw,1.35rem);line-height:1.2}.subscription-widget-grid{display:grid;grid-template-columns:minmax(0,1fr) 230px;gap:20px;align-items:start}.subscription-chart-wrap{min-width:0}.subscription-chart{display:block;width:100%;height:auto;min-height:260px;border:1px solid var(--line);border-radius:8px;background:#fffdf8}.subscription-chart [data-chart=grid] line{stroke:#d8d0c2e6;stroke-width:1}.subscription-chart [data-chart=grid] .subscription-chart-year{stroke:#c95d3142}.subscription-chart [data-chart=grid] text,.subscription-chart [data-chart=labels] text{fill:var(--muted);font-family:JetBrains Mono,monospace;font-size:13px;font-weight:700}.subscription-chart-area{fill:#006d771f}.subscription-chart-line{fill:none;stroke:var(--accent);stroke-linecap:round;stroke-linejoin:round;stroke-width:4}.subscription-chart-steady{stroke:var(--warm);stroke-dasharray:8 8;stroke-linecap:round;stroke-width:3}.subscription-chart-point{fill:var(--surface);stroke:var(--accent-strong);stroke-width:3}.subscription-controls{display:grid;gap:10px}.subscription-controls label{display:grid;grid-template-columns:1fr auto;gap:5px;color:var(--muted);font-size:.82rem;font-weight:800}.subscription-controls input{grid-column:1 / -1;width:100%;accent-color:var(--accent)}.subscription-controls output{color:var(--ink);font-family:JetBrains Mono,monospace;font-weight:800}.subscription-widget-note{margin:18px 0 0;padding-top:14px;border-top:1px solid var(--line)}.walk-widget{margin-top:24px;padding:clamp(18px,3vw,24px);border:1px solid var(--line);border-radius:8px;background:var(--surface)}.walk-widget-header{margin-bottom:20px}.walk-widget-header h2{margin:0;font-size:clamp(1.35rem,2.8vw,2rem)}.walk-sim-wrap{overflow:hidden;border:1px solid var(--line);border-radius:8px;background:#fffdf8}.walk-sim-toolbar{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:10px 14px;border-bottom:1px solid var(--line)}.walk-sim-toolbar strong{color:var(--accent-strong);font-family:JetBrains Mono,monospace}.walk-sim-toolbar span{color:var(--muted);font-size:.75rem;font-weight:700}.walk-sim{display:block;width:100%;height:auto}.walk-sim-sky{fill:#f7f4ed}.walk-building rect,.walk-building path:first-of-type{fill:var(--ink)}.walk-building .walk-building-door{fill:var(--warm)}.walk-building .walk-building-windows{fill:var(--gold)}.walk-sidewalk{fill:none;stroke:#5a687047;stroke-linecap:round;stroke-linejoin:round;stroke-width:20}.walk-person-path{fill:none;stroke:transparent}.walk-subway-line{fill:none;stroke:var(--warm);stroke-linecap:round;stroke-width:10}.walk-station circle:first-child{fill:var(--surface);stroke:var(--ink);stroke-width:4}.walk-station circle:last-child{fill:var(--warm)}.walk-scene-label{fill:var(--muted);font-family:JetBrains Mono,monospace;font-size:12px;font-weight:700}.walk-block-markers rect{fill:var(--surface);stroke:var(--line);stroke-width:1.5}.walk-block-markers path{fill:none;stroke:var(--muted);stroke-linecap:round;stroke-width:1.4}.walk-sim-train{will-change:transform}.walk-sim-train-body{fill:var(--ink);stroke:var(--ink);stroke-width:3}.walk-sim-train-interior{fill:#fffdf8;stroke:var(--ink);stroke-width:1.5}.walk-sim-train-slots{fill:none;stroke:var(--line);stroke-width:1}.walk-sim-train-stripe{fill:none;stroke:var(--accent);stroke-linecap:round;stroke-width:2.5}.walk-sim-coupler{fill:none;stroke:var(--ink);stroke-width:3}.walk-sim-engine-nose{fill:var(--ink);stroke:var(--ink);stroke-linejoin:round;stroke-width:2}.walk-sim-headlight{fill:var(--gold);stroke:var(--surface);stroke-width:1}.walk-sim-passenger{stroke:none}.walk-sim-passenger.is-user{fill:var(--accent)}.walk-sim-passenger.is-average{fill:var(--warm)}.walk-sim-passenger.is-neutral{fill:var(--gold)}.walk-sim-wheel{fill:var(--ink);stroke:var(--ink);stroke-width:1}.walk-resident{fill:none;stroke:var(--accent);stroke-linecap:round;stroke-linejoin:round;stroke-width:3}.walk-resident circle{fill:var(--surface)}.walk-resident.is-average{stroke:var(--warm)}.walk-resident-label rect{fill:var(--accent-strong);stroke:none}.walk-resident.is-average .walk-resident-label rect{fill:var(--warm)}.walk-resident-label text{fill:var(--surface);stroke:none;font-family:JetBrains Mono,monospace;font-size:10px;font-weight:800}.walk-resident-label{transition:opacity .1s linear}.walk-miss-effect{color:var(--accent-strong);font-family:JetBrains Mono,monospace}.walk-miss-effect.is-average{color:var(--warm)}.walk-miss-effect rect,.walk-miss-effect path{fill:currentColor}.walk-miss-effect text{fill:var(--surface);font-size:14px;font-weight:900}.walk-mornings{border:1px solid var(--line);border-radius:8px;background:#fffdf8;margin-top:14px}.walk-mornings{padding:14px}.walk-mornings-heading{display:flex;justify-content:space-between;gap:12px;margin-bottom:12px}.walk-mornings-heading strong,.walk-mornings-heading span{display:block}.walk-mornings-heading 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var(--line);border-radius:8px;background:#f7f4ed}.walk-baseline:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.walk-baseline span{color:var(--muted);font-size:.82rem;font-weight:800}.walk-baseline strong{font-family:JetBrains Mono,monospace}.walk-baseline small{grid-column:1 / -1;color:var(--muted)}.walk-info-icon{display:inline-grid;width:16px;height:16px;margin-left:3px;place-items:center;border:1px solid currentColor;border-radius:50%;font-family:Georgia,serif;font-size:.7rem;font-style:normal;font-weight:800;line-height:1;vertical-align:1px}.walk-baseline .walk-baseline-tooltip{position:absolute;z-index:4;top:calc(100% + 8px);right:0;left:0;padding:9px 11px;border-radius:6px;background:var(--ink);box-shadow:var(--shadow);color:var(--surface);font-size:.75rem;font-weight:700;line-height:1.4;opacity:0;pointer-events:none;transform:translateY(-4px);transition:opacity .12s ease,transform .12s ease}.walk-baseline:hover .walk-baseline-tooltip,.walk-baseline:focus 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strong{color:var(--accent-strong)}@media(max-width:1100px){.home-columns{gap:clamp(20px,4vw,32px)}.article-layout{grid-template-columns:minmax(0,820px)}.article-sidebar{position:static}.return-widget-header,.return-widget-grid,.subscription-widget-header,.subscription-widget-grid,.walk-widget-header{grid-template-columns:1fr}}@media(max-width:680px){.site-header{position:static;align-items:flex-start;flex-direction:column}.home-columns{grid-template-columns:minmax(0,1fr);gap:22px}.nav-links{justify-content:flex-start}h1{font-size:3rem}.site-footer{align-items:flex-start;flex-direction:column}.about-grid,.demo-list,.subscription-summary,.walk-controls{grid-template-columns:1fr}.walk-mornings-heading,.walk-sim-toolbar{align-items:flex-start;flex-direction:column}.walk-train-grid{gap:3px}}