@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2190-2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"EB Garamond";font-style:normal;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-latin-ext.woff2") format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"EB Garamond";font-style:italic;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-italic-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2190-2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"EB Garamond";font-style:italic;font-weight:400 800;font-display:swap;src:url("fonts/ebgaramond-italic-latin-ext.woff2") format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300 700;font-display:swap;src:url("fonts/IBMPlexSans-latin.woff2") format("woff2");unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+2000-206F,U+2074,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"IBM Plex Sans";font-style:normal;font-weight:300 700;font-display:swap;src:url("fonts/IBMPlexSans-latin-ext.woff2") format("woff2");unicode-range:U+0100-02AF,U+0304,U+0308,U+0329,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}

/* Paper by day, the street always at night. --w-* are the window colours (validated together on --night). */
:root{
  color-scheme:light;
  --bg:#f3eee4;--surface:#fbf8f2;--surface-2:#ebe4d6;
  --ink:#1b1a17;--ink-2:#3a372f;--muted:#5b5649;--line:#cfc6b3;--line-soft:#e0d9c9;
  --accent:#9c3d12;--accent-ink:#fff;
  --night:#10151f;--night-2:#18233a;--night-ink:#ece7da;--night-muted:#a9b0bf;--night-line:#2a3346;
  --serif:"EB Garamond","Iowan Old Style",Georgia,serif;--sans:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
  --topbar:50px;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark;
  --bg:#0f1218;--surface:#161a22;--surface-2:#1f2430;
  --ink:#f1ece2;--ink-2:#d8d2c5;--muted:#aaa497;--line:#323846;--line-soft:#232834;
  --accent:#f0a06e;--accent-ink:#1a0d05;
}}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0f1218;--surface:#161a22;--surface-2:#1f2430;
  --ink:#f1ece2;--ink-2:#d8d2c5;--muted:#aaa497;--line:#323846;--line-soft:#232834;
  --accent:#f0a06e;--accent-ink:#1a0d05;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%;scroll-padding-top:calc(var(--topbar) + 14px)}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.58;-webkit-font-smoothing:antialiased;overflow-x:clip}
a{color:inherit;text-decoration-color:var(--accent);text-underline-offset:.18em;text-decoration-thickness:1.5px}
a:hover{color:var(--accent)}
:focus-visible{outline:2.5px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip-link{position:absolute;left:12px;top:-60px;z-index:100;background:var(--ink);color:var(--bg);padding:10px 14px;border-radius:8px;font-weight:600}
.skip-link:focus{top:10px}
.num{font-variant-numeric:tabular-nums lining-nums;white-space:nowrap}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
h1,h2,h3{font-family:var(--serif);font-weight:600;text-wrap:balance;line-height:1.12}
.anchor{opacity:0;margin-left:.3em;text-decoration:none;color:var(--muted);font-family:var(--sans);font-size:.6em;vertical-align:middle;display:inline-block;min-width:1.4em}
h2:hover .anchor,h3:hover .anchor,.anchor:focus-visible{opacity:1}
@media (pointer:coarse){.anchor{opacity:.55}}

/* ---------- top bar */
.topbar{position:fixed;inset:0 0 auto 0;height:var(--topbar);z-index:40;display:flex;align-items:center;gap:6px;padding:0 max(14px,env(safe-area-inset-right)) 0 max(14px,env(safe-area-inset-left));background:var(--bg);border-bottom:1px solid var(--line-soft);font-size:14px}
.brand{display:flex;align-items:center;gap:9px;font-weight:600;text-decoration:none;white-space:nowrap;min-width:0}
.brand span:last-child{overflow:hidden;text-overflow:ellipsis}
/* the home glyph: four lit windows, one per colour of the street */
.brand-mark{width:20px;height:20px;flex:none;display:grid;grid-template-columns:1fr 1fr;gap:2px;padding:3px;border-radius:4px;background:#18233a}
.brand-mark i{border-radius:1px}
.brand-mark i:nth-child(1){background:#d95926}.brand-mark i:nth-child(2){background:#199e70}.brand-mark i:nth-child(3){background:#3987e5}.brand-mark i:nth-child(4){background:#e6dfcc}
.topnav{display:none;gap:1px;margin-left:12px;overflow:hidden}
.topnav a{padding:6px 9px;border-radius:999px;text-decoration:none;color:var(--ink-2);white-space:nowrap}
.topnav a:hover,.topnav a[aria-current="true"]{color:var(--ink);background:var(--surface-2)}
@media (min-width:1100px){.topnav{display:flex}}
.spacer{flex:1}
.chip{padding:5px 10px;border-radius:999px;text-decoration:none;font-weight:600;font-size:13px;border:1px solid var(--line);color:var(--ink-2)}
.chip[aria-current="page"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.icon-btn{width:36px;height:36px;flex:none;display:grid;place-items:center;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.icon-btn:hover{background:var(--surface-2)}
.i-moon{display:none}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .i-sun{display:none}:root:not([data-theme="light"]) .i-moon{display:block}}
:root[data-theme="dark"] .i-sun{display:none}:root[data-theme="dark"] .i-moon{display:block}
/* progress: a row of windows lighting up along the hairline */
.progress{position:fixed;left:0;right:0;top:var(--topbar);height:3px;z-index:41;pointer-events:none}
.progress i{display:block;height:100%;width:100%;transform-origin:0 50%;transform:scaleX(0);background:repeating-linear-gradient(90deg,#d95926 0 10px,transparent 10px 13px,#199e70 13px 23px,transparent 23px 26px,#3987e5 26px 36px,transparent 36px 39px,#e6dfcc 39px 49px,transparent 49px 52px)}

/* ---------- reading rail */
.rail{display:none}
@media (min-width:1280px){
.rail{display:flex;flex-direction:column;position:fixed;right:8px;top:50%;transform:translateY(-50%);z-index:30;padding:6px 3px;border-radius:14px;background:color-mix(in srgb,var(--bg) 88%,transparent)}
.rail-dot{position:relative;display:flex;align-items:center;justify-content:center;width:24px;height:22px;text-decoration:none}
.rail-dot .dot{width:7px;height:7px;border-radius:50%;background:var(--muted);transition:transform .2s,background .2s}
.rail-dot:hover .dot,.rail-dot:focus-visible .dot{background:var(--accent);transform:scale(1.3)}
.rail-dot[aria-current="true"] .dot{background:var(--accent);transform:scale(1.5);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 30%,transparent)}
.rail-label{position:absolute;right:calc(100% + 6px);top:50%;transform:translate(6px,-50%);padding:3px 10px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);font-size:13px;font-weight:600;white-space:nowrap;opacity:0;pointer-events:none;transition:opacity .15s,transform .15s}
.rail-dot:hover .rail-label,.rail-dot:focus-visible .rail-label{opacity:1;transform:translate(0,-50%)}
}

/* ---------- story: steps on the left, the street pinned on the right */
main{padding-top:var(--topbar)}
.story{display:grid;grid-template-columns:minmax(330px,36%) 1fr;gap:0 28px;padding:0 max(18px,env(safe-area-inset-left)) 0 max(18px,env(safe-area-inset-right))}
@media (min-width:1280px){.story{padding-right:48px}}
.stage{grid-column:2;grid-row:1;position:sticky;top:calc(var(--topbar) + 12px);height:calc(100svh - var(--topbar) - 24px);display:flex;flex-direction:column;background:linear-gradient(#0d1320,#18233a);color:var(--night-ink);border-radius:18px;overflow:hidden;margin-top:12px}
.steps{grid-column:1;grid-row:1;list-style:none;margin:0;padding:0}
.stage-head{display:flex;align-items:center;gap:14px;padding:14px 18px 0;flex-wrap:wrap}
.hud-year{margin:0;font-family:var(--serif);font-size:44px;line-height:1;font-weight:600;letter-spacing:.01em;color:#fff}
.qbtns{display:flex;gap:6px;flex-wrap:wrap;margin-left:auto}
.qbtn{font:600 14px var(--sans);color:var(--night-ink);background:transparent;border:1px solid var(--night-line);border-radius:999px;padding:8px 14px;cursor:pointer;min-height:40px}
.qbtn:hover{border-color:#5b6680}
.qbtn[aria-pressed="true"]{background:var(--night-ink);color:#10151f;border-color:var(--night-ink)}
.street{position:absolute;inset:0}
.stage-head,.legend{position:relative;z-index:2}
.note{position:absolute;left:0;right:0;bottom:0;z-index:2}
.street canvas,.street .still{position:absolute;inset:0;width:100%;height:100%;display:block}
.street .still{object-fit:cover;object-position:50% 100%}
.live .street .still{display:none}
.street canvas{cursor:pointer;touch-action:pan-y}
.legend,.stage-head{pointer-events:none}.legend>*,.stage-head>*{pointer-events:auto}
.win-tip{position:absolute;z-index:3;width:240px;margin:0;padding:9px 12px;border-radius:10px;background:#f6f1e6;color:#1b1a17;font-size:13.5px;line-height:1.4;box-shadow:0 8px 24px rgba(0,0,0,.45);transform:translateY(-100%);pointer-events:none}
.win-tip.below{transform:translateY(24px)}
.pan-hint{position:absolute;left:50%;bottom:36px;transform:translateX(-50%);margin:0;padding:4px 10px;border-radius:999px;background:rgba(16,21,31,.8);font-size:12.5px;color:var(--night-muted);white-space:nowrap}
.legend{display:flex;flex-wrap:wrap;gap:6px;padding:10px 16px 4px}
.lg{display:inline-flex;align-items:center;gap:7px;font:500 13.5px var(--sans);color:var(--night-ink);background:transparent;border:1px solid var(--night-line);border-radius:999px;padding:5px 11px 5px 8px;cursor:pointer;min-height:34px}
.lg:hover{border-color:#5b6680}
.lg[aria-pressed="true"]{background:#253049;border-color:#8a93a8}
.lg.all{padding-left:11px}
.lg:disabled{cursor:default;opacity:.65}
.lg-val{color:var(--night-muted);font-size:12.5px}
.sw{display:inline-block;width:10px;height:13px;border-radius:2px;background:var(--c);flex:none;box-shadow:0 0 6px color-mix(in srgb,var(--c) 60%,transparent)}
.note{margin:0;padding:4px 18px 8px;font-size:13px;color:var(--night-muted);min-height:1.4em;background:linear-gradient(transparent,rgba(10,13,20,.85) 40%)}

.step{min-height:88vh;display:flex;align-items:center;padding:6vh 0}
.step:last-of-type{min-height:70vh}
.step-card{background:var(--surface);border:1px solid var(--line-soft);border-radius:16px;padding:22px 24px;box-shadow:0 1px 0 var(--line-soft)}
.step-card h2{font-size:30px;margin:2px 0 12px}
.step-card p{margin:0 0 12px}
.step-card p:last-child{margin-bottom:0}
.when{font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.hero{min-height:calc(100svh - var(--topbar));align-items:flex-start;padding-top:9vh}
.hero-card .kicker{font-size:13px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin:0 0 12px}
.hero-card h1{font-size:clamp(34px,4.2vw,56px);margin:0 0 18px}
.deck{font-size:19px;color:var(--ink-2);margin:0 0 20px}
.scroll-cue{font-size:14px;color:var(--muted);margin:0}
.scroll-cue::after{content:" ↓"}
.explorer{padding:6vh 0 12vh;min-height:90vh}
.ex-card h2{font-size:30px;margin:0 0 10px}
.yearbar{margin:16px 0 4px}
.yearbar input{width:100%;margin:14px 0 4px;accent-color:var(--accent)}
.yearticks{display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}
.yearticks span{cursor:pointer;padding:2px 0;writing-mode:vertical-rl;transform:rotate(180deg)}
.yearticks span.on{color:var(--ink);font-weight:700}
.yearticks span.na{opacity:.4}
.btn{font:600 15px var(--sans);border-radius:999px;padding:9px 16px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer;min-height:42px}
.btn.primary{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.btn.primary[data-on="1"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.mine{margin-top:18px;border-top:1px solid var(--line-soft);padding-top:12px}
.mine summary{font-weight:600;cursor:pointer;font-family:var(--serif);font-size:21px}
.mine .hint{font-size:14px;color:var(--muted)}
.mine-grid{display:grid;gap:10px}
.mine-q{display:grid;gap:4px;font-size:14px}
.mine-q select{font:15px var(--sans);padding:8px 10px;border-radius:10px;border:1px solid var(--line);background:var(--bg);color:var(--ink);min-height:42px}
.mine-out{font-size:15px;margin:12px 0}

/* ---------- after the story */
.after{border-top:1px solid var(--line-soft);margin-top:6vh}
.prose{max-width:1060px;margin:0 auto;padding:30px max(18px,env(safe-area-inset-left)) 20px}
.block{max-width:720px;margin:0 auto 46px}
.block:has(.tablewrap){max-width:1060px}
.block>p{max-width:720px}
.block h2{font-size:32px;margin:0 0 14px}
.block h3{font-size:22px;margin:26px 0 8px}
.tablewrap{overflow-x:auto;margin:14px 0 18px;border:1px solid var(--line);border-radius:12px;background:var(--surface)}
table{border-collapse:collapse;width:100%;font-size:14.5px}
caption{text-align:left;padding:12px 14px 4px;font-size:13.5px;color:var(--muted)}
th,td{padding:7px 12px;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}
thead th{font-size:13px;color:var(--muted);font-weight:600;white-space:nowrap}
td.num{text-align:right}
td small{color:var(--muted);font-size:12px;margin-left:3px}
td.muted{color:var(--muted);font-size:12.5px;font-style:italic}
th .sw{margin-right:6px;vertical-align:-1px}
.sources{padding-left:20px;font-size:15px}
.sources li{margin-bottom:8px}
.related{font-size:15px;color:var(--ink-2)}
.share{max-width:720px;margin:14px auto}
.share-row{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.share-label{font-size:14px;color:var(--muted);margin-right:4px}
.ic{width:40px;height:40px;display:inline-grid;place-items:center;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);cursor:pointer}
.ic:hover,.ic:focus-visible{color:var(--accent);border-color:var(--accent)}
@media (pointer:coarse){.ic{width:44px;height:44px}}
.share-msg{font-size:13.5px;color:var(--muted);margin:6px 0 0;min-height:1.2em}
.site-footer{display:flex;flex-wrap:wrap;gap:8px 22px;justify-content:center;padding:26px 18px calc(34px + env(safe-area-inset-bottom));border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
.back-top{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:calc(16px + env(safe-area-inset-bottom));z-index:45;min-width:48px;height:48px;padding:0 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);font:600 14px var(--sans);display:flex;align-items:center;gap:6px;cursor:pointer;box-shadow:0 6px 18px rgba(0,0,0,.2)}
@media (min-width:1280px){.back-top{right:48px}}

/* ---------- phone and narrow tablet: the street on top (at most 40% of the screen), text below */
@media (max-width:899px){
  .story{display:block;padding:0}
  .stage{position:sticky;top:var(--topbar);height:min(40svh,360px);min-height:250px;border-radius:0;margin:0;z-index:5}
  .stage-head{padding:8px 12px 0;gap:8px}
  .hud-year{font-size:28px}
  .qbtn{font-size:13px;padding:6px 11px;min-height:36px}
  .legend{flex-wrap:nowrap;overflow-x:auto;padding:6px 12px 2px;scrollbar-width:none}
  .lg{flex:none;min-height:32px;font-size:12.5px}
  .note{padding:2px 12px 8px;font-size:12px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .steps{padding:0 14px}
  .step{min-height:72svh;padding:4svh 0;align-items:flex-start}
  .hero{min-height:auto;padding-top:22px}
  .hero-card h1{font-size:32px}
  .deck{font-size:17px}
  .step-card{padding:18px}
  .step-card h2,.ex-card h2{font-size:25px}
  .explorer{min-height:auto;padding-bottom:40px}
  .back-top{min-width:44px;width:44px;height:44px;padding:0;justify-content:center;right:8px;bottom:calc(8px + env(safe-area-inset-bottom));opacity:.94}
  .back-top span{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
}
@media (max-width:420px){.qbtn span{font-size:12.5px}.hud-year{font-size:24px}}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media print{.topbar,.rail,.stage,.back-top,.progress,.explorer{display:none}.story{display:block}.step{min-height:0;padding:8px 0}}