@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;          /* cinnabar, marks and fills */
  --accent-text: #164070;     /* cinnabar for small text on paper */
  --on-accent: #fdf8ee;
  --gold: #74490c;
  --clay: #b4642e;
  --loam: #4a3a28;
  --sand: #e9d3a4;
  --sea: #d3dee0;
  --land: #f6eedd;
  --desert: #e6d3a4;
  --stipple: #bb9f66;
  --mount: #d8c9ac;
  --hatch: #a89574;
  --coast: #8d8069;
  --river: #7fa0aa;
  --grat: #c6cfcd;
  --route: #1c4a7e;
  --route-dim: #1c4a7e40;
  --route-ghost: #6d6250;
  --label: #231f18;
  --label-halo: #f3e9d6;
  --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;
  --arabic: "Amiri", "Geeza Pro", "Noto Naskh Arabic", 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;
    --clay: #c97e3f;
    --loam: #0d0b08;
    --sand: #3a3120;
    --sea: #0f1618;
    --land: #221f18;
    --desert: #3a3120;
    --stipple: #6f5f38;
    --mount: #2f2c22;
    --hatch: #5c5340;
    --coast: #5f5847;
    --river: #3f5f68;
    --grat: #1d2628;
    --route: #f0a64f;
    --route-dim: #f0a64f38;
    --route-ghost: #9a9681;
    --label: #eee7d7;
    --label-halo: #221f18;
    --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;
  --clay: #c97e3f;
  --loam: #0d0b08;
  --sand: #3a3120;
  --sea: #0f1618;
  --land: #221f18;
  --desert: #3a3120;
  --stipple: #6f5f38;
  --mount: #2f2c22;
  --hatch: #5c5340;
  --coast: #5f5847;
  --river: #3f5f68;
  --grat: #1d2628;
  --route: #f0a64f;
  --route-dim: #f0a64f38;
  --route-ghost: #9a9681;
  --label: #eee7d7;
  --label-halo: #221f18;
  --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; } }
/* clip, not hidden: hidden turns body into a scroll container and every sticky element stops sticking */
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; }
em { font-style: italic; }
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 { transition: none; } }
@media print { .rail, .topbar { display: none; } }

/* ---------- hero: the pit at dusk ---------- */
.hero {
  position: relative; display: flex; flex-direction: column;
  min-height: calc(100svh - var(--bar)); overflow: clip; isolation: isolate;
  padding: 0 var(--gutter) 2.5rem; max-width: 96rem; margin: 0 auto;
}
.scene { position: absolute; inset: 0; z-index: -1; }
.soil {
  position: absolute; inset: 0;
  background:
    radial-gradient(90% 46% at 82% 6%, color-mix(in srgb, var(--sand) 60%, transparent), transparent 62%),
    linear-gradient(180deg, transparent 0 34%, color-mix(in srgb, var(--clay) 13%, transparent) 58%, color-mix(in srgb, var(--clay) 30%, var(--paper-deep)) 100%);
}
.soil::after {
  content: ""; position: absolute; inset: 0;
  background: repeating-linear-gradient(180deg, transparent 0 30px, color-mix(in srgb, var(--loam) 14%, transparent) 30px 32px);
  mask-image: linear-gradient(180deg, transparent 52%, #000 78%);
  -webkit-mask-image: linear-gradient(180deg, transparent 52%, #000 78%);
}
.scene-tablets { position: absolute; inset: 0; }
.st-rect { position: absolute; opacity: .42; }
.st-rect svg { width: 100%; height: auto; display: block; filter: drop-shadow(0 14px 18px color-mix(in srgb, var(--loam) 28%, transparent)); }
.st-r1 { width: clamp(11rem, 24vw, 21rem); right: -1.5rem; top: 4%; transform: rotate(7deg); }
.st-r2 { width: clamp(8rem, 17vw, 15rem); left: -1rem; bottom: 4%; transform: rotate(-9deg); opacity: .3; }
.motes i { position: absolute; width: 5px; height: 5px; border-radius: 50%; background: color-mix(in srgb, var(--clay) 65%, transparent); opacity: 0; animation: drift 9s ease-in-out infinite; }
.motes i:nth-child(1) { left: 12%; top: 64%; animation-delay: 0s; }
.motes i:nth-child(2) { left: 24%; top: 78%; animation-delay: 1.4s; }
.motes i:nth-child(3) { left: 46%; top: 58%; animation-delay: 2.6s; }
.motes i:nth-child(4) { left: 58%; top: 72%; animation-delay: .8s; }
.motes i:nth-child(5) { left: 70%; top: 60%; animation-delay: 3.8s; }
.motes i:nth-child(6) { left: 82%; top: 76%; animation-delay: 2s; }
.motes i:nth-child(7) { left: 36%; top: 84%; animation-delay: 4.6s; }
.motes i:nth-child(8) { left: 90%; top: 52%; animation-delay: 5.6s; }
@keyframes drift { 0%, 100% { transform: translate3d(0, 0, 0); opacity: 0; } 30% { opacity: .85; } 55% { transform: translate3d(1.1rem, -2.6rem, 0); opacity: .55; } 80% { opacity: .7; } }
.hero-visual { order: -1; display: grid; justify-items: center; text-align: center; padding-top: clamp(.8rem, 3vh, 1.6rem); }
.medallion { width: min(62vw, 19rem); }
.medallion svg { width: 100%; height: auto; display: block; filter: drop-shadow(0 20px 28px color-mix(in srgb, var(--loam) 32%, transparent)); animation: float 7s ease-in-out infinite; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-10px); } }
.hero-gap { margin: .7rem 0 0; display: grid; justify-items: center; }
.hero-gap strong { font-family: var(--display); font-weight: 700; font-size: clamp(3.6rem, 17vw, 5.2rem); line-height: .95; letter-spacing: -.03em; font-variant-numeric: tabular-nums lining-nums; }
.gap-label { font-family: var(--sans); font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); margin-top: .4rem; }
.gap-sub { font-family: var(--sans); font-size: .85rem; color: var(--ink-muted); margin-top: .2rem; font-variant-numeric: tabular-nums; }
.hero-note { font-family: var(--sans); font-size: .74rem; color: var(--ink-muted); margin: .55rem 0 0; }
.hero-copy { width: 100%; max-width: 46rem; margin: 0 auto; padding-top: 1.2rem; }
.hero-copy .panel { background: color-mix(in srgb, var(--surface) 87%, transparent); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border: 1px solid var(--rule); border-radius: 1.2rem; padding: clamp(1.2rem, 3vw, 2rem); box-shadow: var(--shadow); }
.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 h1 { font-size: clamp(2rem, 8.6vw, 2.7rem); line-height: 1.02; letter-spacing: -.02em; margin: 0 0 1rem; font-weight: 640; font-variation-settings: "SOFT" 30, "WONK" 0; }
.deck { font-size: clamp(1.02rem, 1.8vw, 1.22rem); line-height: 1.5; color: var(--ink-soft); margin: 0 0 1rem; }
.byline { font-family: var(--sans); font-size: .82rem; color: var(--ink-muted); margin: 0; }
.hero-facts { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; margin: 1.2rem 0 0; padding: 0; list-style: none; background: var(--rule); border: 1px solid var(--rule); border-radius: 8px; overflow: hidden; }
.hero-facts > li { display: flex; flex-direction: column; background: var(--surface); padding: .55rem .6rem; text-align: center; }
.hero-facts span { font-family: var(--sans); font-size: .68rem; font-weight: 400; color: var(--ink-muted); order: 2; }
.hero-facts strong { margin: 0; font-family: var(--display); font-weight: 700; font-size: 1.25rem; font-variant-numeric: tabular-nums; order: 1; }
.cta-row { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1.2rem 0 0; }
.cta-row .btn { flex: 1 1 11rem; display: inline-flex; align-items: center; justify-content: center; }
.btn.solid { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.btn.solid:hover { color: var(--on-accent); filter: brightness(1.08); }
.btn.ghost { background: transparent; }
@media (max-width: 34rem) { .hero-facts { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 64rem) {
  .hero { display: grid; grid-template-columns: minmax(0, 35rem) minmax(0, 1fr); gap: 2rem; align-items: center; align-content: center; }
  .hero-copy { grid-column: 1; grid-row: 1; max-width: none; padding-top: 0; }
  .hero-visual { order: 0; grid-column: 2; grid-row: 1; padding-top: 0; }
  .medallion { width: min(100%, 25rem); }
  .hero h1 { font-size: clamp(2.7rem, 4.4vw, 4rem); }
  .hero-gap strong { font-size: clamp(4rem, 6.5vw, 6.2rem); }
  .st-r1 { right: 2%; top: 6%; }
  .st-r2 { left: 30%; }
}
@media (prefers-reduced-motion: reduce) { .medallion svg, .motes i { animation: none; } .motes i { opacity: .5; } }

/* ---------- gap visual: 1,900 years on one scale ---------- */
.gapviz-wrap { margin: 0 0 2.2rem; border: 1px solid var(--rule); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); padding: 1rem 1rem .4rem; }
.gapviz svg { width: 100%; height: auto; display: block; }
.gapviz text { font-family: var(--sans); fill: var(--ink-muted); }
.gapviz .axis { stroke: var(--rule-strong); stroke-width: 2; }
.gapviz .tick line { stroke: var(--rule-strong); stroke-width: 1.5; }
.gapviz .tick text { font-size: 12px; font-variant-numeric: tabular-nums; }
.gapviz .axis-unit { font-size: 12px; font-style: italic; }
.gapviz .bulk { fill: color-mix(in srgb, var(--clay) 32%, transparent); }
.gapviz .gap-line line { stroke: var(--accent); stroke-width: 3; stroke-linecap: round; }
.gapviz .gap-line path { stroke: var(--accent); stroke-width: 3; stroke-linecap: round; fill: none; }
.gapviz .gap-label { font-family: var(--display); font-size: 19px; font-weight: 700; fill: var(--ink); text-anchor: middle; text-transform: none; letter-spacing: .02em; }
.gapviz .marker line { stroke: var(--ink-soft); stroke-width: 2; }
.gapviz .marker circle { fill: var(--accent); }
.gapviz .mark-d circle { fill: var(--gold); }
.gapviz .marker text { font-size: 14px; font-weight: 600; fill: var(--ink-soft); }
.gapviz.armed .gap-line, .gapviz.armed .gap-label, .gapviz.armed .marker { opacity: 0; }
.gapviz.armed .gap-line { transform: scaleX(0); transform-box: fill-box; transform-origin: left center; }
.gapviz.in .gap-line { animation: gapgrow .9s cubic-bezier(.2, .8, .2, 1) forwards; }
.gapviz.in .gap-label { animation: fadein .6s ease-out .5s both; }
.gapviz.in .mark-t { animation: fadein .5s ease-out .15s both; }
.gapviz.in .mark-u { animation: fadein .5s ease-out .8s both; }
.gapviz.in .mark-d { animation: fadein .5s ease-out 1.1s both; }
@keyframes gapgrow { from { transform: scaleX(0); opacity: 0; } to { transform: scaleX(1); opacity: 1; } }
@keyframes fadein { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) {
  .gapviz.armed .gap-line, .gapviz.armed .gap-label, .gapviz.armed .marker { opacity: 1; transform: none; animation: none; }
}

/* ---------- verdict stamp ---------- */
.verdict { position: relative; }
.stamp { display: inline-block; margin: 0 0 .7rem; transform: rotate(-2deg); font-family: var(--sans); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); border: 2px solid var(--accent-text); border-radius: 6px; padding: .25rem .65rem; background: var(--surface); box-shadow: var(--shadow); }
@media (min-width: 48rem) { .stamp { position: absolute; right: .2rem; top: -1.15rem; margin: 0; transform: rotate(5deg); } }

/* ---------- discovery ---------- */
.discovery, .plates-sec, .timeline-sec, .debate, .meanings { padding: 3.5rem 0 2.5rem; border-top: 1px solid var(--rule); }
.discovery h2, .plates-sec h2, .timeline-sec h2, .debate h2, .meanings 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; }
.disc-grid { display: grid; gap: 2rem; }
@media (min-width: 64rem) { .disc-grid { grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr); align-items: start; } }
.disc-text p { color: var(--ink-soft); }
.disc-figs .figure { margin: 0 0 1.6rem; }
.figure { margin: 1.8rem 0; }
.figure img { width: 100%; height: auto; border-radius: 6px; background: var(--paper-deep); box-shadow: var(--shadow); }
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); }

/* ---------- plates ---------- */
.plate { margin: 2.2rem 0 0; padding: 1.4rem 1.2rem; border: 1px solid var(--rule); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow); scroll-margin-top: calc(var(--bar) + .5rem); }
@media (min-width: 64rem) {
  .plate { display: grid; grid-template-columns: minmax(0, 24rem) minmax(0, 1fr); gap: 1.5rem; align-items: start; }
  .plate .all-readings { grid-column: 1 / -1; }
}
.plate-fig { margin: 0; }
.plate-fig figcaption { margin-top: .7rem; }
.plate-svg { width: 100%; height: auto; display: block; }
.tablet-body { fill: var(--land); stroke: var(--coast); stroke-width: 1.6; }
.tablet-hole { fill: var(--paper-deep); stroke: var(--coast); stroke-width: 1.4; }
.st { fill: none; stroke: var(--ink-soft); stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round; }
.st.dim { stroke: var(--rule-strong); stroke-width: 1.6; }
circle.st { fill: none; }
.sign .hit { fill: transparent; }
.sign { cursor: pointer; }
.sign:hover .st, .sign:focus-visible .st { stroke: var(--accent); }
.sign:focus { outline: none; }
.sign:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
.sign.active .st { stroke: var(--accent); stroke-width: 3; }
.sign-static .st { stroke: var(--ink-soft); }
.reading { border-left: 3px solid var(--accent); padding-left: 1rem; min-height: 8rem; }
.reading-hint { font-family: var(--sans); font-size: .9rem; color: var(--ink-muted); margin: 0; }
.reading-sign { font-size: 1.3rem; margin: 0 0 .6rem; }
.lens { margin: 0 0 .9rem; }
.lens h5 { font-family: var(--sans); font-size: .7rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--accent-text); margin: 0 0 .15rem; }
.lens-who { font-family: var(--display); font-weight: 650; font-size: 1.02rem; margin: 0; }
.lens-text { margin: .1rem 0 0; font-size: 1rem; color: var(--ink-soft); }
.all-readings { margin-top: 1.1rem; font-size: .95rem; }
.all-readings summary { font: 600 .85rem var(--sans); color: var(--ink-muted); cursor: pointer; }
.all-readings dl { margin: .7rem 0 0; display: grid; gap: .6rem; }
.all-readings dl > div { display: grid; gap: .15rem; }
.all-readings dt { font-family: var(--display); font-weight: 650; }
.all-readings dd { margin: 0; color: var(--ink-soft); }
.plates-sec.ready .all-readings { display: none; }

/* ---------- timeline ---------- */
.tl-grid { display: grid; gap: 2rem; }
@media (min-width: 64rem) { .tl-grid { grid-template-columns: 1fr 1fr; align-items: start; } }
.tl-h { font-family: var(--sans); font-size: .78rem; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent-text); margin: 1.2rem 0 .8rem; }
.timeline { list-style: none; margin: 0; padding: 0; border-left: 2px solid var(--rule); }
.timeline li { position: relative; padding: 0 0 1.4rem 1.4rem; }
.timeline li::before { content: ""; position: absolute; left: -7px; top: .45em; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); }
.timeline li[data-year="5300"]::before, .timeline li[data-year="1961"]::before { box-shadow: 0 0 0 4px var(--paper), 0 0 0 5.5px var(--accent); }
.t-when { margin: 0; font-family: var(--sans); font-size: .8rem; font-weight: 700; color: var(--accent-text); font-variant-numeric: tabular-nums; }
.timeline h3 { margin: .1rem 0 .25rem; font-size: 1.15rem; }
.timeline p:last-child { margin: 0; color: var(--ink-soft); font-size: 1.02rem; }

/* ---------- debate ---------- */
.camps { display: grid; gap: 1.2rem; margin-top: 1.4rem; }
@media (min-width: 64rem) { .camps { grid-template-columns: 1fr 1fr; } }
.camp { border: 1px solid var(--rule); border-radius: 10px; background: var(--surface); padding: 1.1rem 1.2rem; }
.camp-h { font-size: 1.3rem; margin: 0 0 .2rem; }
.camp-intro { font-size: .95rem; color: var(--ink-muted); margin: 0 0 .8rem; }
.camp-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .8rem; }
.camp-list h3 { font-family: var(--sans); font-size: .85rem; font-weight: 700; margin: 0; }
.camp-list p { margin: .1rem 0 0; font-size: .98rem; color: var(--ink-soft); }
.assumptions { margin-top: 1.6rem; padding: 1rem 1.2rem; border-radius: 10px; background: var(--paper-deep); }
.assumptions h3 { margin: 0 0 .2rem; font-size: 1.15rem; }
.assumptions p { margin: 0 0 .5rem; color: var(--ink-soft); }
.assumptions ol { margin: 0; padding-left: 1.2rem; color: var(--ink-soft); display: grid; gap: .3rem; }
.terms { margin-top: 1.4rem; padding: 1rem 1.2rem; border-radius: 10px; background: var(--paper-deep); }
.terms h3 { margin: 0 0 .5rem; font-size: 1.15rem; }
.term-list { margin: 0; display: grid; gap: .5rem; }
.term-list > div { display: grid; gap: .1rem; }
.term-list dt { font-family: var(--sans); font-size: .85rem; font-weight: 700; }
.term-list dd { margin: 0; color: var(--ink-soft); font-size: .98rem; }
.question-list { list-style: none; margin: 1.4rem 0 0; padding: 0; display: grid; gap: 1rem; counter-reset: q; }
.question-list > li { border: 1px solid var(--rule); border-radius: 10px; background: var(--surface); padding: 1rem 1.2rem; }
.question-list h3 { margin: 0; font-size: 1.25rem; }
.q-status { font-family: var(--sans); font-size: .8rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-text); margin: .3rem 0 .4rem; }
.question-list p:last-child { margin: 0; color: var(--ink-soft); }
.gapviz .range { fill: var(--accent); opacity: .55; }
.gapviz .gap-line.cond line, .gapviz .gap-line.cond path { stroke-dasharray: 7 5; }
.gapviz .marker circle.hollow { fill: var(--surface); stroke: var(--gold); stroke-width: 2.5; }
.gapviz .mark-d circle.hollow { fill: var(--surface); }
.verdict { margin-top: 1.6rem; border-top: 2px solid var(--accent); padding-top: 1rem; }
.verdict h3 { margin: 0 0 .4rem; font-size: 1.15rem; }
.verdict p { margin: 0; color: var(--ink-soft); max-width: 46rem; }

/* ---------- meanings ---------- */
.meanings .figure { max-width: 30rem; }

/* ---------- game ---------- */
.game, .sources { padding: 4.5rem 0 3.5rem; border-top: 1px solid var(--rule); }
.game { background: var(--paper-deep); }
.section-intro { max-width: 40rem; color: var(--ink-soft); margin: 0 0 1.8rem; }
.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-chinese { margin: 0 0 .4rem; font-size: 1rem; color: var(--ink-soft); }
.card-q { margin: 0 0 .9rem; font-size: 1rem; font-weight: 600; }
.card-buttons { display: flex; gap: .5rem; margin-top: auto; }
.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; }
.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; }
.card-line { width: 100%; height: 1.4rem; display: block; overflow: visible; }
.card-line .axis { stroke: var(--rule-strong); stroke-width: 1; vector-effect: non-scaling-stroke; }
.card-line .gap { stroke: var(--accent); stroke-width: 3; vector-effect: non-scaling-stroke; }
.card-line .dot-cn { fill: var(--accent); }
.card-line .dot-eu { fill: var(--ink); }
.game-legend { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; margin: -1rem 0 1.4rem; font: 600 .8rem var(--sans); }
.card-years { display: flex; justify-content: space-between; margin: .1rem 0 0 !important; font: 600 .74rem var(--sans); font-variant-numeric: tabular-nums; }
.y-cn { color: var(--accent-text); }
.y-cn::before { content: "● "; }
.y-eu { color: var(--ink); }
.y-eu::before { content: "● "; }
.game.ready .card.answered .card-line .gap { animation: grow .7s cubic-bezier(.2,.8,.2,1) both; transform-box: fill-box; transform-origin: left center; }
@keyframes grow { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@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, .game.ready .card.answered .card-line .gap { 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); }

/* ---------- 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; }

/* ---------- myths ---------- */
.myth-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 19rem), 1fr)); gap: 1.4rem; counter-reset: myth; }
.myth-list li { counter-increment: myth; border-top: 3px solid var(--ink); padding-top: .9rem; }
.myth-list h3 { font-size: 1.3rem; line-height: 1.2; margin: 0 0 .5rem; }
.myth-list h3::before { content: counter(myth, upper-roman) " "; color: var(--accent-text); }
.myth-list p { margin: 0; color: var(--ink-soft); font-size: 1.02rem; }

/* ---------- 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; }
.defs { position: absolute; width: 0; height: 0; overflow: hidden; }

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