@font-face{font-family:'Fraunces';font-style:italic;font-weight:300 900;font-display:swap;src:url(fonts/fraunces-italic-latin-ext.woff2?v=2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, 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:'Fraunces';font-style:italic;font-weight:300 900;font-display:swap;src:url(fonts/fraunces-italic-latin.woff2?v=2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Fraunces';font-style:normal;font-weight:300 900;font-display:swap;src:url(fonts/fraunces-normal-latin-ext.woff2?v=2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, 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:'Fraunces';font-style:normal;font-weight:300 900;font-display:swap;src:url(fonts/fraunces-normal-latin.woff2?v=2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Source Serif 4';font-style:italic;font-weight:300 700;font-display:swap;src:url(fonts/source-serif-4-italic-latin-ext.woff2?v=2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, 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:'Source Serif 4';font-style:italic;font-weight:300 700;font-display:swap;src:url(fonts/source-serif-4-italic-latin.woff2?v=2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
@font-face{font-family:'Source Serif 4';font-style:normal;font-weight:300 700;font-display:swap;src:url(fonts/source-serif-4-normal-latin-ext.woff2?v=2) format('woff2');unicode-range:U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, 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:'Source Serif 4';font-style:normal;font-weight:300 700;font-display:swap;src:url(fonts/source-serif-4-normal-latin.woff2?v=2) format('woff2');unicode-range:U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD}
/* ---------- tokens ---------- */
:root {
  color-scheme: light;
  --paper: #f5efe3;
  --paper-deep: #ece3d2;
  --surface: #fcf8f0;
  --ink: #1a1712;
  --ink-soft: #3b352c;
  --ink-muted: #4a4237;
  --rule: #d9cdb6;
  --rule-strong: #b6a88c;
  --accent: #1c4a7e;
  --accent-text: #164070;
  --on-accent: #fdf8ee;
  --gold: #74490c;
  --sky: #d3dee0;
  --sky-1: #4f8ec2;
  --sky-2: #9dc1de;
  --sky-3: #d8e4e9;
  --sky-4: #f3e3cb;
  --sun-core: #fff4d9;
  --sun-halo: #fff4d973;
  --cloud-far: #ffffffb8;
  --cloud-near: #ffffffd9;
  --ghost: #1c4a7e59;
  --ghost-ink: #27436b;
  --drop: #1c4a7eb3;
  --route: #1c4a7e;
  --route-dim: #1c4a7e40;
  --shadow: 0 1px 2px #1c181414, 0 8px 24px #1c181412;
  --display: "Fraunces", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --serif: "Source Serif 4", "Iowan Old Style", Georgia, serif;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --gutter: clamp(1rem, 4vw, 2.5rem);
  --bar: 2.75rem;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --paper: #11130f;
    --paper-deep: #1a1c16;
    --surface: #1d201a;
    --ink: #f0ebde;
    --ink-soft: #dcd5c6;
    --ink-muted: #c0b8a6;
    --rule: #343a2e;
    --rule-strong: #545b49;
    --accent: #e2aa5c;
    --accent-text: #f0bd75;
    --on-accent: #15130d;
    --gold: #e2c36a;
    --sky: #0f1618;
    --sky-1: #070f1e;
    --sky-2: #12233c;
    --sky-3: #24344c;
    --sky-4: #232a33;
    --sun-core: #ece5d3;
    --sun-halo: #ece5d329;
    --cloud-far: #d7e0ec1f;
    --cloud-near: #d7e0ec2e;
    --ghost: #f0bd7580;
    --ghost-ink: #e8d9bd;
    --drop: #f0a64fb3;
    --route: #f0a64f;
    --route-dim: #f0a64f38;
    --shadow: 0 1px 2px #0006, 0 8px 24px #0005;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #11130f;
  --paper-deep: #1a1c16;
  --surface: #1d201a;
  --ink: #f0ebde;
  --ink-soft: #dcd5c6;
  --ink-muted: #c0b8a6;
  --rule: #343a2e;
  --rule-strong: #545b49;
  --accent: #e2aa5c;
  --accent-text: #f0bd75;
  --on-accent: #15130d;
  --gold: #e2c36a;
  --sky: #0f1618;
  --sky-1: #070f1e;
  --sky-2: #12233c;
  --sky-3: #24344c;
  --sky-4: #232a33;
  --sun-core: #ece5d3;
  --sun-halo: #ece5d329;
  --cloud-far: #d7e0ec1f;
  --cloud-near: #d7e0ec2e;
  --ghost: #f0bd7580;
  --ghost-ink: #e8d9bd;
  --drop: #f0a64fb3;
  --route: #f0a64f;
  --route-dim: #f0a64f38;
  --shadow: 0 1px 2px #0006, 0 8px 24px #0005;
}

/* ---------- base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
html, body { overflow-x: clip; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 1.125rem; line-height: 1.62;
  font-optical-sizing: auto; text-rendering: optimizeLegibility;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-text); text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 3px; }
h1, h2, h3 { font-family: var(--display); font-weight: 600; color: var(--ink); text-wrap: balance; }
section { scroll-margin-top: calc(var(--bar) + .5rem); }
section[tabindex="-1"]:focus-visible { outline: none; }
[hidden] { display: none !important; }
.visually-hidden { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.wrap { max-width: 72rem; margin: 0 auto; padding-inline: var(--gutter); }
.skip { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--ink); color: var(--paper); padding: .5rem .8rem; border-radius: 4px; }
.skip:focus { left: .8rem; top: .8rem; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: .55rem;
  min-height: var(--bar); padding: .3rem var(--gutter);
  padding-top: calc(.3rem + env(safe-area-inset-top, 0px));
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  backdrop-filter: saturate(1.3) blur(10px); -webkit-backdrop-filter: saturate(1.3) blur(10px);
  border-bottom: 1px solid var(--rule); font-family: var(--sans); font-size: .78rem;
}
.topbar .home { font-weight: 650; color: var(--ink-soft); text-decoration: none; flex: none; padding-block: .35rem; }
.topbar .spacer { flex: 1; }
.topnav {
  display: flex; gap: .1rem; overflow-x: auto; scrollbar-width: none; min-width: 6rem; flex: 1 1 auto; align-self: stretch; margin-left: .25rem;
  mask-image: linear-gradient(to right, #000 0, #000 calc(100% - 1.6rem), transparent 100%);
}
.topnav::-webkit-scrollbar { display: none; }
.topnav a { display: flex; align-items: center; padding: .25rem .55rem; border-radius: 999px; text-decoration: none; color: var(--ink-muted); white-space: nowrap; }
.topnav a:hover { color: var(--accent-text); background: var(--paper-deep); }
.topnav a[aria-current="true"] { color: var(--ink); background: var(--paper-deep); font-weight: 650; }
.chip {
  display: inline-flex; align-items: center; padding: .22rem .6rem; border-radius: 999px; flex: none; position: relative;
  border: 1px solid var(--ink-muted); color: var(--ink-soft); text-decoration: none; background: var(--surface);
}
.chip:hover { border-color: var(--accent); color: var(--accent-text); }
.chip::before, .icon-btn::before { content: ""; position: absolute; inset: 50% auto auto 50%; width: 2.75rem; height: 2.75rem; transform: translate(-50%, -50%); }
.icon-btn {
  display: inline-flex; align-items: center; justify-content: center; flex: none; position: relative;
  width: 1.95rem; height: 1.95rem; padding: 0; border-radius: 999px; cursor: pointer;
  color: var(--ink-muted); background: var(--surface); border: 1px solid var(--ink-muted);
}
.icon-btn:hover { color: var(--accent-text); border-color: var(--accent); }
.icon-btn svg { display: block; }
.icon-btn svg[hidden] { display: none; }
@media (max-width: 34rem) {
  .topbar { gap: .35rem; }
  .topbar .home { max-width: 5.6rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
  .topnav a { padding: .25rem .4rem; }
}

/* ---------- reading rail ---------- */
.rail { display: none; position: fixed; top: 50%; right: 1.1rem; transform: translateY(-50%); flex-direction: column; align-items: flex-end; gap: .5rem; z-index: 30; }
@media (min-width: 88rem) { .rail { display: flex; } }
.rail-dot { position: relative; display: flex; align-items: center; justify-content: flex-end; width: 14px; padding: .15rem 0; text-decoration: none; }
.rail-dot .dot { display: block; width: 7px; height: 7px; border-radius: 50%; background: var(--ink-muted); transition: background-color .15s, transform .15s; }
.rail-dot:hover .dot, .rail-dot:focus-visible .dot { background: var(--ink-soft); }
.rail-dot.active .dot { background: var(--accent); transform: scale(1.5); }
.rail-label {
  position: absolute; right: 100%; top: 50%; margin-top: -.85rem; margin-right: .5rem;
  font-family: var(--sans); font-size: .75rem; line-height: 1.2; color: var(--ink-soft); white-space: nowrap;
  background: var(--surface); border: 1px solid var(--rule); border-radius: 4px; padding: .25rem .55rem; box-shadow: var(--shadow);
  opacity: 0; transform: translateX(6px); pointer-events: none; transition: opacity .12s, transform .12s;
}
.rail-dot:hover .rail-label, .rail-dot:focus-visible .rail-label { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rail-dot .dot, .rail-label, .card, .rung { transition: none; } }
@media print { .rail, .topbar { display: none; } }

/* ---------- chapter badges ---------- */
.badge {
  display: inline-grid; place-items: center; flex: none;
  width: 1.55rem; height: 1.55rem; font-family: var(--display); font-weight: 700; font-size: .72rem;
  color: var(--on-accent); background: var(--accent); letter-spacing: .02em; line-height: 1;
  clip-path: polygon(50% 0, 85% 15%, 100% 50%, 85% 85%, 50% 100%, 15% 85%, 0 50%, 15% 15%);
}
.badge-lg { width: 2.6rem; height: 2.6rem; font-size: 1.1rem; }

/* ---------- hero: the fall ---------- */
.hero {
  position: relative; isolation: isolate; overflow: clip;
  min-height: calc(100svh - var(--bar));
  display: grid; align-items: end;
  --drop: 0; --sy: 0;
}
.sky {
  position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(180deg, var(--sky-1) 0%, var(--sky-2) 38%, var(--sky-3) 62%, var(--sky-4) 82%, var(--paper) 100%);
}
.sky-svg { position: absolute; inset: 0; width: 100%; height: 100%; }
.sun { fill: var(--sun-halo); }
.sun-core { fill: var(--sun-core); }
.clouds { fill: var(--cloud-far); --depth: .1; will-change: transform; transform: translate3d(0, calc(var(--sy) * var(--depth) * 1px), 0); }
.clouds.near { fill: var(--cloud-near); --depth: .22; }
.plane { fill: var(--ink); opacity: .8; }
.plane .trail { fill: none; stroke: var(--ink); stroke-width: 2; stroke-dasharray: 2 7; stroke-linecap: round; opacity: .55; }
.sky-ghost {
  position: absolute; margin: 0; z-index: 0;
  transform: translate3d(0, calc(var(--sy) * .05 * 1px), 0);
  top: clamp(.8rem, 4vh, 2.2rem); left: 0; right: 0; text-align: center;
}
.sky-ghost span { display: block; }
.ghost-num {
  font-family: var(--display); font-weight: 700; letter-spacing: -.02em; line-height: .95;
  font-size: clamp(4.2rem, 17vw, 9rem); font-variant-numeric: tabular-nums lining-nums;
  color: transparent; -webkit-text-stroke: 2px var(--ghost);
}
@supports not (-webkit-text-stroke: 1px black) { .ghost-num { color: var(--ghost); } }
.ghost-unit, .ghost-place {
  font-family: var(--sans); font-size: .72rem; font-weight: 700; letter-spacing: .22em;
  color: var(--ghost-ink); margin-top: .45rem;
}
.ghost-place { letter-spacing: .14em; font-weight: 600; margin-top: .3rem; text-transform: uppercase; }
.dropline {
  position: absolute; width: 0; border-left: 2px dashed var(--drop);
  top: 5%; right: 9%; height: 30svh;
}
.dunit {
  position: absolute; top: -1.5rem; left: 0; transform: translateX(-50%);
  font-family: var(--sans); font-size: .7rem; font-weight: 700; color: var(--ghost-ink);
}
.dtick { position: absolute; left: 0; }
.dtick-1 { top: 0; } .dtick-2 { top: 5.3%; } .dtick-3 { top: 18%; } .dtick-4 { top: 72.7%; } .dtick-5 { top: 91.8%; }
.dtick-dot {
  position: absolute; left: 0; top: 0; width: 9px; height: 9px; border-radius: 50%;
  transform: translate(-50%, -50%); background: var(--paper); border: 2px solid var(--drop);
}
.dtick-label {
  display: none; position: absolute; right: 12px; top: 0; transform: translateY(-50%);
  font-family: var(--sans); font-size: .68rem; font-weight: 700; white-space: nowrap;
  color: var(--ghost-ink); font-variant-numeric: tabular-nums;
}
.chute {
  position: absolute; left: 0; top: calc(var(--drop) * 100%); width: 2.4rem;
  transform: translate(-50%, -50%);
  animation: sway 6s ease-in-out infinite;
  filter: drop-shadow(0 2px 6px #00000040);
}
.chute svg { display: block; width: 100%; height: auto; }
.chute-canopy { fill: var(--accent); }
.chute-lines { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; }
.chute-body { fill: var(--accent); }
.chute-tag {
  position: absolute; left: calc(100% + .35rem); top: 0;
  font-family: var(--sans); font-size: .68rem; font-weight: 700; white-space: nowrap;
  font-variant-numeric: tabular-nums; color: var(--ink);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  border: 1px solid var(--rule-strong); border-radius: 999px; padding: .1rem .5rem;
}
@keyframes sway {
  0%, 100% { transform: translate(-50%, -50%) rotate(-5deg); }
  50% { transform: translate(-50%, -50%) rotate(5deg); }
}
.hero-inner {
  width: min(100%, 72rem); margin-inline: auto; padding-inline: var(--gutter);
  padding-top: 38svh; padding-bottom: clamp(1.5rem, 4vh, 2.5rem);
  display: grid; gap: 1.5rem; align-items: start;
}
.hero-panel {
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--rule); border-radius: 1.2rem; box-shadow: var(--shadow);
  padding: clamp(1.2rem, 3vw, 2rem);
}
.kicker { font-family: var(--sans); font-size: .76rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); margin: 0 0 .9rem; }
.hero-panel h1 { font-size: clamp(2rem, 9vw, 2.7rem); line-height: 1.04; letter-spacing: -.02em; margin: 0 0 1rem; font-weight: 640; }
.deck { font-size: 1.05rem; line-height: 1.5; color: var(--ink-soft); margin: 0 0 1.1rem; }
.cta-row { margin: 0 0 1rem; }
.btn.solid { background: var(--accent); border-color: var(--accent); color: var(--on-accent); display: inline-block; flex: none; padding-inline: 1.4rem; }
.btn.solid:hover { color: var(--on-accent); filter: brightness(1.08); }
.btn.solid::after { content: " \2193"; }
.byline { font-family: var(--sans); font-size: .82rem; color: var(--ink-muted); margin: 0; }
.stats {
  list-style: none; margin: 1.2rem 0 0; padding: 1rem 0 0;
  border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem;
}
.stats li { display: grid; gap: .15rem; align-content: start; }
.stat-val { font-family: var(--display); font-weight: 700; font-size: clamp(1.05rem, 4.6vw, 1.4rem); color: var(--accent-text); font-variant-numeric: tabular-nums; line-height: 1.1; }
.stat-label { font-family: var(--sans); font-size: .74rem; line-height: 1.35; color: var(--ink-muted); }
.archive-card {
  position: relative; margin: 0; max-width: 21rem; width: 100%; justify-self: center;
  background: var(--surface); border: 1px solid var(--rule); border-radius: .6rem;
  box-shadow: var(--shadow); padding: .7rem .7rem .9rem;
}
.archive-card img { width: 100%; height: auto; border-radius: .3rem; background: var(--paper-deep); }
.archive-card figcaption { font-family: var(--sans); font-size: .78rem; line-height: 1.45; color: var(--ink-muted); margin-top: .6rem; }
.stamp {
  position: absolute; top: -2.1rem; right: -1rem; width: 6.4rem; height: 6.4rem;
  transform: rotate(-8deg); filter: drop-shadow(0 2px 4px #00000030);
}
.stamp-outer { fill: color-mix(in srgb, var(--paper) 82%, transparent); stroke: var(--accent); stroke-width: 2.5; }
.stamp-inner { fill: none; stroke: var(--accent); stroke-width: 1; }
.stamp-text { font-family: var(--sans); font-size: 10.5px; font-weight: 700; letter-spacing: 1.6px; fill: var(--accent-text); }
.stamp-num { font-family: var(--display); font-weight: 700; font-size: 17px; text-anchor: middle; fill: var(--accent-text); font-variant-numeric: tabular-nums; }
.stamp-ft { font-family: var(--sans); font-weight: 700; font-size: 10px; letter-spacing: 3px; text-anchor: middle; fill: var(--accent-text); }
@media (min-width: 40rem) and (max-width: 63.99rem) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 15rem); align-items: end; padding-top: 34svh; }
  .archive-card { justify-self: end; }
}
@media (min-width: 64rem) {
  .hero-inner { grid-template-columns: minmax(0, 1fr) minmax(15rem, 21rem); gap: 2.5rem; align-items: center; padding-top: clamp(9rem, 24vh, 13rem); }
  .hero-panel { border-radius: 1.4rem; }
  .hero-panel h1 { font-size: clamp(2.6rem, 4.6vw, 3.9rem); }
  .deck { font-size: clamp(1.1rem, 1.5vw, 1.25rem); max-width: 34rem; }
  .sky-ghost { text-align: left; left: var(--gutter); right: auto; }
  .ghost-num { font-size: clamp(5rem, 9vw, 8rem); }
  .dropline { top: 9%; bottom: 7%; height: auto; left: 61%; right: auto; }
  .dtick-label { display: block; }
  .archive-card { justify-self: end; }
}
@media (min-width: 75rem) {
  .dtick-label { font-size: .74rem; }
}
@media (max-width: 63.99rem) {
  .sun, .sun-core { display: none; }
  .dropline { top: 9%; }
  .chute-tag { left: auto; right: calc(100% + .35rem); }
  .sky-ghost { text-align: left; left: var(--gutter); right: 5.5rem; }
  .ghost-num { font-size: clamp(3.6rem, 18vw, 5rem); }
  .ghost-unit, .ghost-place { letter-spacing: .12em; font-size: .66rem; }
}
@media (prefers-reduced-motion: reduce) {
  .clouds, .sky-ghost { transform: none; }
  .chute { animation: none; }
}
@media print {
  .sky { display: none; }
  .hero { min-height: 0; }
  .hero-inner { padding-top: 1rem; }
}

/* ---------- section headings ---------- */
.ladder, .story, .figures, .game, .sources { padding: 4rem 0 3rem; border-top: 1px solid var(--rule); }
.ladder h2, .story h2, .figures h2, .game h2, .sources h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); line-height: 1.1; letter-spacing: -.015em; margin: 0 0 1rem; }
.section-intro { max-width: 40rem; color: var(--ink-soft); margin: 0 0 1.8rem; }

/* ---------- ladder ---------- */
.ladder { background: var(--paper-deep); }
.ladder-grid { display: grid; gap: 2rem; }
@media (min-width: 64rem) { .ladder-grid { grid-template-columns: minmax(0, 21rem) minmax(0, 1fr); align-items: start; } }
.ladder-left { display: grid; gap: 1rem; justify-items: center; }
@media (min-width: 64rem) { .ladder-left { position: sticky; top: calc(var(--bar) + 1rem); } }
.ladder-svg { width: min(100%, 15rem); height: auto; display: block; }
.lrail { stroke: var(--rule-strong); stroke-width: 3; stroke-linecap: round; }
.lrail-done { stroke: var(--route); stroke-width: 3; stroke-linecap: round; }
.lgrid { stroke: var(--rule); stroke-width: 1; stroke-dasharray: 3 4; }
.lgrid-label { font-family: var(--sans); font-size: 10px; fill: var(--ink-muted); font-variant-numeric: tabular-nums; }
.lrung-tick { stroke: var(--ink-muted); stroke-width: 2; stroke-linecap: round; }
.lrung-dot { fill: var(--paper); stroke: var(--ink-muted); stroke-width: 2; }
.lrung-label { font-family: var(--sans); font-size: 12.5px; font-weight: 700; fill: var(--ink-soft); font-variant-numeric: tabular-nums; }
.lrung.past .lrung-tick { stroke: var(--route); }
.lrung.past .lrung-dot { fill: var(--route); stroke: var(--route); }
.lrung.now .lrung-tick { stroke: var(--route); stroke-width: 3; }
.lrung.now .lrung-dot { fill: var(--route); stroke: var(--route); }
.lrung.now .lrung-label { fill: var(--accent-text); }
.lmarker-halo { fill: var(--route); opacity: .2; }
.lmarker-dot { fill: var(--route); stroke: var(--paper); stroke-width: 2; }
.lmarker-chute { fill: var(--route); opacity: .85; }
.ladder-panel { text-align: center; }
.ladder-counter { margin: 0; font-family: var(--display); font-weight: 700; font-size: clamp(2.4rem, 6vw, 3.2rem); line-height: 1; font-variant-numeric: tabular-nums lining-nums; color: var(--accent-text); }
.ladder-unit { font-size: 1.1rem; font-weight: 600; }
.ladder-step { margin: .3rem 0 .8rem; font-family: var(--sans); font-size: .85rem; font-weight: 650; color: var(--ink-muted); min-height: 1.4em; }
.ladder-buttons { margin: 0; display: flex; gap: .5rem; justify-content: center; flex-wrap: wrap; }
.ladder-buttons .btn { flex: 0 1 auto; }
.rungs { list-style: none; margin: 0; padding: 0; display: grid; gap: 1rem; align-content: start; }
.rung {
  padding: 1.1rem 1.2rem; border-radius: 10px; background: var(--surface);
  border: 1px solid var(--rule); box-shadow: var(--shadow);
  transition: border-color .2s, opacity .2s;
}
.ladder.ready .rung { cursor: pointer; }
.ladder.ready .rung.now { border-color: var(--accent); border-width: 2px; }
.ladder.ready .rung.past .rung-num { background: var(--route); }
.rung h3 { margin: 0 0 .2rem; font-size: 1.3rem; display: flex; align-items: center; gap: .6rem; }
.rung-num {
  display: inline-grid; place-items: center; flex: none; width: 1.6rem; height: 1.6rem;
  font-family: var(--display); font-weight: 700; font-size: .8rem; color: var(--on-accent);
  background: var(--ink-muted); border-radius: 50%;
}
.rung.now .rung-num { background: var(--accent); }
.rung-meta { margin: 0 0 .5rem; font-family: var(--sans); font-size: .82rem; font-weight: 650; color: var(--accent-text); font-variant-numeric: tabular-nums; }
.rung p:last-child { margin: 0; font-size: 1.02rem; color: var(--ink-soft); }

/* ---------- story ---------- */
.chapter { padding: 3rem 0 2.5rem; border-top: 1px solid var(--rule); max-width: 46rem; }
.chapter:first-of-type { border-top: 0; padding-top: 1rem; }
.ch-head { display: grid; grid-template-columns: auto 1fr; column-gap: 1rem; align-items: center; margin-bottom: 1.2rem; }
.ch-num { grid-column: 1 / -1; margin: 0 0 .3rem; font-family: var(--display); font-weight: 700; font-size: .9rem; letter-spacing: .2em; color: var(--accent-text); }
.ch-head .badge { grid-row: 2; }
.ch-head h3 { margin: 0; font-size: clamp(1.7rem, 4vw, 2.4rem); line-height: 1.05; letter-spacing: -.02em; }
.chapter p { margin: 0 0 1.1rem; }

.figure { margin: 1.8rem 0; }
.figure img { width: 100%; height: auto; border-radius: 6px; background: var(--paper-deep); box-shadow: var(--shadow); }
.figure.portrait img { max-height: 34rem; width: auto; max-width: 100%; margin-inline: auto; }
figcaption { font-family: var(--sans); font-size: .82rem; line-height: 1.45; color: var(--ink-muted); margin-top: .6rem; }
.credit { display: block; margin-top: .15rem; }
.credit a { color: var(--ink-muted); }
.pull { margin: 2rem 0 0; padding: 1.1rem 0 0; border-top: 2px solid var(--accent); }
.pull-label { margin: 0 0 .5rem; font-family: var(--sans); font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-text); }
.pull blockquote { margin: 0; }
.pull blockquote p { margin: 0; font-family: var(--display); font-size: clamp(1.15rem, 2.4vw, 1.45rem); line-height: 1.35; color: var(--ink); }
.pull .aside-text { margin: 0; font-size: 1rem; line-height: 1.6; color: var(--ink-soft); }
.pull figcaption { margin-top: .6rem; }

/* ---------- figures table ---------- */
.table-scroll { overflow-x: auto; }
.figures table { width: 100%; border-collapse: collapse; font-family: var(--sans); font-size: .92rem; }
.figures th, .figures td { text-align: left; padding: .7rem .6rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.figures thead th { font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-muted); font-weight: 700; }
.figures tbody th { font-family: var(--display); font-size: 1.02rem; font-weight: 600; }
.figures td.val { font-weight: 700; color: var(--accent-text); white-space: nowrap; font-variant-numeric: tabular-nums; }
.figures-note { max-width: 46rem; color: var(--ink-soft); }
@media (max-width: 63.99rem) {
  .figures table, .figures tbody, .figures tr { display: block; }
  .figures thead { display: none; }
  .figures tr { padding: .7rem 0; border-bottom: 1px solid var(--rule); }
  .figures td, .figures th { display: block; border: 0; padding: .1rem 0; }
  .figures td.val { font-size: 1.05rem; }
}

/* ---------- game ---------- */
.game { background: var(--paper-deep); }
.cards { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 19rem), 1fr)); gap: 1rem; }
.card {
  position: relative; display: flex; flex-direction: column; padding: 1.1rem 1.1rem 1rem; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--rule); box-shadow: var(--shadow);
  transition: transform .25s, border-color .25s;
}
.card-num { position: absolute; right: .9rem; top: .7rem; margin: 0; font-family: var(--display); font-weight: 700; font-size: 1.6rem; color: var(--ink-muted); line-height: 1; }
.card-place { margin: 0 2rem .5rem 0; font-size: 1.25rem; line-height: 1.2; }
.card-q { margin: 0 0 .9rem; font-size: 1rem; font-weight: 600; }
.card-buttons { display: flex; gap: .5rem; margin-top: auto; flex-wrap: wrap; }
.card-buttons button, .btn {
  flex: 1; font: 650 .92rem var(--sans); padding: .6rem .8rem; border-radius: 999px; cursor: pointer; text-decoration: none; text-align: center;
  color: var(--ink); background: var(--paper); border: 1.5px solid var(--ink-muted); min-height: 2.75rem;
  transition: background-color .15s, border-color .15s, color .15s, transform .1s;
}
.card-buttons button:hover, .btn:hover { border-color: var(--accent); color: var(--accent-text); }
.card-buttons button:active, .btn:active { transform: scale(.97); }
.card-buttons button.chosen { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.card-buttons button:disabled { cursor: default; }
.card-buttons button:disabled:not(.chosen) { opacity: .62; }
.btn:disabled { opacity: .45; cursor: default; }
.card-verdict { margin: .6rem 0 0; font: 700 .8rem var(--sans); letter-spacing: .12em; text-transform: uppercase; min-height: 0; }
.card-verdict:empty { display: none; }
.card.right { border-color: var(--gold); }
.card.right .card-verdict { color: var(--gold); }
.card.wrong .card-verdict { color: var(--accent-text); }
.card.answered { transform: translateY(-2px); }
.card-answer { margin-top: .6rem; font-size: .98rem; }
.card-answer summary { font: 600 .82rem var(--sans); color: var(--ink-muted); cursor: pointer; }
.card-answer p { margin: .4rem 0 .5rem; }
.game.ready .card-answer summary { display: none; }
.card-verdict:focus { outline: none; }
.card-verdict:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.game.ready .card:not(.answered) .card-answer { display: none; }
@keyframes pop { 0% { transform: scale(.96); } 60% { transform: scale(1.02); } 100% { transform: scale(1) translateY(-2px); } }
.game.ready .card.answered { animation: pop .4s ease-out; }
@media (prefers-reduced-motion: reduce) { .game.ready .card.answered { animation: none; } }
.scoreboard { margin-top: 1.6rem; padding: 1.2rem; border-radius: 10px; background: var(--surface); border: 1px solid var(--rule); display: grid; gap: .6rem; }
.score { margin: 0; font-family: var(--display); font-weight: 650; font-size: 1.35rem; }
.score-done { margin: 0; color: var(--ink-soft); min-height: 1.5em; }
.score-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; }
.share-status { font: 600 .85rem var(--sans); color: var(--accent-text); }
.score-actions .btn { flex: 0 1 auto; }
.btn.share { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.share:hover { color: var(--on-accent); filter: brightness(1.08); }
.btn.ghost { background: transparent; }

/* ---------- share line ---------- */
.share-line { margin: 0.6rem 0 0; font-size: 0.86rem; color: var(--ink-muted); display: flex; gap: 0.6rem; align-items: center; flex-wrap: wrap; }
.share-btn { font: inherit; color: var(--accent-text); background: none; border: 0; padding: 0.3rem 0; min-height: 2.75rem; cursor: pointer; text-decoration: underline; text-underline-offset: 0.18em; }
.share-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.share-note { min-height: 1em; }

/* ---------- sources ---------- */
.sources { font-size: 1rem; }
.sources > .wrap > p { max-width: 46rem; color: var(--ink-soft); }
.src-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr)); gap: 1.2rem 2rem; margin-top: 2rem; }
.src-group h3, .img-heading { font-family: var(--sans); font-size: .76rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-muted); margin: 0 0 .4rem; }
.img-heading { margin-top: 2.2rem; }
.src-group ul, .img-credits { margin: 0; padding-left: 1.1rem; font-family: var(--sans); font-size: .86rem; line-height: 1.5; }
.src-group li, .img-credits li { margin-bottom: .35rem; overflow-wrap: anywhere; }
.img-credits { color: var(--ink-soft); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--rule); padding: 2rem var(--gutter) calc(2.5rem + env(safe-area-inset-bottom, 0px)); text-align: center; font-family: var(--sans); font-size: .88rem; color: var(--ink-muted); }
.site-footer p { margin: 0; }

/* ---------- 404 ---------- */
.nf-main { padding-block: 5rem; max-width: 40rem; }
.nf-main .btn { display: inline-block; }