/* NimbleMap website and help (WP6.10). Plain CSS, no web fonts: every face below is a font the
   reader's system already has, so pages load fast from any host, mainland China included. */

:root {
  --paper: #f6f3ec;
  --paper-2: #ede8dc;
  --card: #fffdf8;
  --ink: #1d232b;
  --ink-2: #4a525c;
  --ink-3: #7a828c;
  --rule: #d9d2c3;
  --accent: #2563eb;          /* the app's accent */
  --accent-ink: #1d4fc4;
  --seal: #b83a26;            /* vermilion, used sparingly */
  --contour: rgba(29, 35, 43, 0.07);
  --shadow: 0 1px 2px rgba(40, 30, 10, .06), 0 8px 28px rgba(40, 30, 10, .08);
  --radius: 14px;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", "Songti SC", "STSong", "Noto Serif CJK SC", "Source Han Serif SC", "SimSun", Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #0f141c;
    --paper-2: #151c27;
    --card: #18202c;
    --ink: #e8e4da;
    --ink-2: #b4b0a6;
    --ink-3: #868a90;
    --rule: #2a3442;
    --accent: #6f9cf2;
    --accent-ink: #8fb2f5;
    --seal: #e0745f;
    --contour: rgba(232, 228, 218, 0.06);
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #0f141c;
  --paper-2: #151c27;
  --card: #18202c;
  --ink: #e8e4da;
  --ink-2: #b4b0a6;
  --ink-3: #868a90;
  --rule: #2a3442;
  --accent: #6f9cf2;
  --accent-ink: #8fb2f5;
  --seal: #e0745f;
  --contour: rgba(232, 228, 218, 0.06);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 10px 30px rgba(0, 0, 0, .35);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 80px; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.65 var(--sans);
  overflow-x: hidden;
}
:lang(zh) body, body:lang(zh) { line-height: 1.8; letter-spacing: .01em; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent-ink); text-underline-offset: 3px; text-decoration-thickness: 1px; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 32px); margin-inline: auto; }

/* Contour lines: a quiet topographic texture behind the hero and section heads. */
.contours {
  background-image:
    repeating-radial-gradient(ellipse 120% 80% at 82% 18%, transparent 0 22px, var(--contour) 22px 23px),
    repeating-radial-gradient(ellipse 90% 70% at 8% 110%, transparent 0 26px, var(--contour) 26px 27px);
}

/* ---- Header ---- */
.site-head {
  position: sticky; top: 0; z-index: 10;
  background: var(--paper);
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-head .wrap { display: flex; align-items: center; gap: 20px; min-height: 60px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); text-decoration: none; font-weight: 650; letter-spacing: -.01em; }
.brand img { width: 30px; height: 30px; }
/* Chinese pages: 凌波微图 with NimbleMap beside it, so the bilingual pun shows. */
.brand-en { font-weight: 500; color: var(--ink-2); margin-left: 2px; }
@media (max-width: 420px) { .brand-en { display: none; } }
.nav { display: flex; gap: 4px; margin-left: auto; align-items: center; flex-wrap: wrap; }
.nav a, .nav button {
  color: var(--ink-2); text-decoration: none; font: inherit; font-size: 15px;
  padding: 6px 10px; border-radius: 8px; background: none; border: 0; cursor: pointer;
}
.nav a:hover, .nav button:hover { background: var(--paper-2); color: var(--ink); }
.nav a[aria-current="page"] { color: var(--ink); background: var(--paper-2); }
.nav .lang { border: 1px solid var(--rule); }
.theme-btn svg { width: 18px; height: 18px; vertical-align: -3px; }
@media (max-width: 640px) {
  .site-head .wrap { gap: 6px; padding-block: 8px; }
  .nav { margin-left: 0; width: 100%; justify-content: space-between; }
  .nav a, .nav button { padding: 6px 7px; font-size: 14px; }
}

/* ---- Type ---- */
h1, h2, h3 { font-family: var(--serif); font-weight: 600; letter-spacing: -.012em; line-height: 1.18; }
:lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: .02em; line-height: 1.35; }
h1 { font-size: clamp(2.3rem, 5.4vw, 4.1rem); margin: 0 0 .4em; }
/* Chinese headings are wider per character: the hero's two lines (8 characters each) must fit its column. */
:lang(zh) .hero h1 { font-size: clamp(2rem, 4.2vw, 3.3rem); }
h2 { font-size: clamp(1.6rem, 3.2vw, 2.3rem); margin: 0 0 .5em; }
h3 { font-size: 1.3rem; margin: 1.6em 0 .4em; }
.eyebrow {
  font: 600 12.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase;
  color: var(--seal); margin: 0 0 14px; display: flex; align-items: center; gap: 10px;
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: currentColor; }
.lede { font-size: 1.2rem; color: var(--ink-2); max-width: 36em; }
.coords { font: 12px/1 var(--mono); color: var(--ink-3); letter-spacing: .04em; }
kbd {
  font: 600 .82em var(--mono); padding: 1px 6px; border-radius: 5px;
  border: 1px solid var(--rule); border-bottom-width: 2px; background: var(--card);
}
.ui {  /* a label exactly as the app shows it */
  font-weight: 600; color: var(--ink); background: var(--paper-2);
  padding: 1px 7px; border-radius: 6px; font-size: .94em;
  -webkit-box-decoration-break: clone; box-decoration-break: clone; overflow-wrap: anywhere;
}
.ui-zh { color: var(--ink-3); font-weight: 400; font-size: .9em; }

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 10px;
  font-weight: 600; text-decoration: none; border: 1px solid transparent; font-size: 16px;
}
.btn-primary { background: var(--accent); color: #fff; }
:root[data-theme="dark"] .btn-primary { color: #0b1220; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .btn-primary { color: #0b1220; } }
.btn-primary:hover { filter: brightness(1.08); }
.btn-quiet { border-color: var(--rule); color: var(--ink); background: var(--card); }
.btn-quiet:hover { border-color: var(--ink-3); }

/* ---- Hero ---- */
.hero { padding: 72px 0 110px; border-bottom: 1px solid var(--rule); }
.hero-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 48px; align-items: center; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 26px; }
.hero-shot { position: relative; }
.hero-shot .frame { transform: rotate(.6deg); }
.hero-shot .frame + .frame {
  position: absolute; width: 50%; left: -2%; bottom: -26%; transform: rotate(-2.2deg);
}
@media (max-width: 900px) {
  .hero { padding-top: 40px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero { padding-bottom: 48px; }
  .hero-shot .frame + .frame { position: static; width: 70%; margin: -14% 0 0 -2%; }
}

.frame {
  margin: 0; background: var(--card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow); border: 1px solid var(--rule);
}
.frame img { width: 100%; }
figure.shot { margin: 22px 0; }
figure.shot figcaption, .frame figcaption { font-size: 14px; color: var(--ink-3); padding: 10px 14px; border-top: 1px solid var(--rule); }

/* ---- Sections ---- */
section { padding: 72px 0; }
section + section { border-top: 1px solid var(--rule); }
.section-head { max-width: 40em; margin-bottom: 34px; }

.examples { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr)); gap: 28px; }
.example h3 { margin: 16px 0 4px; }
.example p { margin: 0; color: var(--ink-2); }
.example .coords { margin-top: 10px; display: block; }

/* Strata: three stacked bands that explain "layers" at a glance. */
.strata { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; counter-reset: s; }
.strata > div { padding: 22px 22px 20px; background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); position: relative; }
.strata > div::before {
  counter-increment: s; content: "0" counter(s);
  font: 600 12px/1 var(--mono); color: var(--seal); letter-spacing: .1em;
}
.strata h3 { margin: 10px 0 6px; font-size: 1.2rem; }
.strata p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
@media (max-width: 760px) { .strata { grid-template-columns: 1fr; } }
/* Step cards: a screenshot across the top, the step number as a badge on it. */
.strata > div:has(.step-shot) { overflow: hidden; }
.strata > div:has(.step-shot)::before {
  position: absolute; top: 12px; left: 12px; z-index: 1;
  background: var(--card); border: 1px solid var(--rule); border-radius: 6px; padding: 5px 7px;
}
.step-shot {
  display: block; width: calc(100% + 44px); max-width: none; margin: -22px -22px 16px;
  aspect-ratio: 16 / 10; object-fit: cover; object-position: center;
  border-bottom: 1px solid var(--rule); background: var(--paper-2);
}
.strata .step-shot + h3 { margin-top: 0; }

/* Text beside an illustration (#why, #what). */
.why-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 40px; align-items: center; margin-bottom: 34px; }
.why-grid .section-head { margin-bottom: 0; }
@media (max-width: 900px) { .why-grid { grid-template-columns: 1fr; gap: 24px; } }
.sketch, .layer-art { margin: 0; }
.sketch svg, .layer-art svg { display: block; width: 100%; height: auto; }
.sketch figcaption { font-size: 13px; color: var(--ink-3); text-align: center; margin-top: 6px; }
.layer-art { width: 100%; max-width: 500px; justify-self: center; }

/* The sketch's shapes: theme colours only, so dark mode follows. */
.sk-win { fill: var(--card); stroke: var(--rule); stroke-width: 1.2; }
.sk-bar { fill: var(--paper); }
.sk-dot { fill: var(--rule); }
.sk-tool { fill: var(--paper-2); stroke: var(--rule); stroke-width: .7; }
.sk-sep { stroke: var(--rule); stroke-width: 1; fill: none; }
.sk-panel, .sk-status { fill: var(--paper); }
.sk-panel { stroke: var(--rule); stroke-width: .7; }
.sk-check { fill: var(--card); stroke: var(--ink-3); stroke-width: .7; }
.sk-empty { fill: var(--paper); stroke: var(--rule); stroke-width: .8; stroke-dasharray: 3 3; }
.sk-dialog { fill: var(--card); stroke: var(--ink-3); stroke-width: .8; }
.sk-dialog-g { filter: drop-shadow(0 6px 10px rgba(0,0,0,.14)); }
.sk-field { fill: var(--paper); stroke: var(--rule); stroke-width: .7; }
.sk-row { fill: transparent; }
.sk-row-sel { fill: color-mix(in srgb, var(--accent) 18%, transparent); }
.sk-x { fill: none; stroke: var(--ink-3); stroke-width: 1; stroke-linecap: round; stroke-linejoin: round; }
.sk-line { fill: var(--rule); }
.sk-line-strong { fill: var(--ink-3); }
.sk-btn { fill: var(--accent); }
.sk-logo { fill: color-mix(in srgb, var(--accent) 70%, var(--card)); }
.sk-search { fill: var(--paper); }
.sk-ic { fill: none; stroke: var(--ink-3); stroke-width: .9; }
.sk-water { fill: color-mix(in srgb, var(--accent) 10%, var(--card)); }
.sk-grid { stroke: color-mix(in srgb, var(--accent) 12%, transparent); stroke-width: .6; }
.sk-land { fill: var(--paper-2); }
.sk-coast { fill: none; stroke: color-mix(in srgb, var(--ink-3) 55%, transparent); stroke-width: .8; }
.sk-border { fill: none; stroke: var(--rule); stroke-width: .8; stroke-dasharray: 2.5 2; }
.sk-v { stroke: var(--card); stroke-width: .6; }
.sk-v1 { fill: color-mix(in srgb, var(--seal) 45%, var(--card)); }
.sk-v2 { fill: color-mix(in srgb, var(--seal) 75%, var(--card)); }
.sk-v3 { fill: var(--seal); }
.sk-halo { fill: none; stroke: var(--accent); stroke-width: 2; }
.sk-halo2 { fill: color-mix(in srgb, var(--accent) 10%, transparent); stroke: color-mix(in srgb, var(--accent) 35%, transparent); stroke-width: 1; }
.sk-chip { fill: var(--card); stroke: var(--rule); stroke-width: .7; }
.sk-ramp { fill: url(#sk-ramp); }
.sk-r0 { stop-color: color-mix(in srgb, var(--seal) 30%, var(--card)); }
.sk-r1 { stop-color: var(--seal); }
.sk-scale { fill: none; stroke: var(--ink-3); stroke-width: 1; }
.sk-card { fill: var(--card); stroke: var(--rule); stroke-width: 1; filter: drop-shadow(0 6px 12px rgba(0,0,0,.12)); }
.sk-tick { stroke: var(--ink-3); stroke-width: .7; opacity: .6; }
.sk-mark { fill: var(--accent); stroke: var(--card); stroke-width: 1; }
.sk-act { fill: var(--paper); }
.sk-acti { fill: color-mix(in srgb, var(--accent) 25%, transparent); stroke: var(--accent); stroke-width: .8; }
.sk-acti-l { stroke: var(--accent); stroke-width: 1.2; stroke-dasharray: 1.5 1.5; }
.sk-link { fill: color-mix(in srgb, var(--accent) 60%, transparent); }
.sk-label { font: 600 12px var(--sans); fill: var(--ink-2); text-anchor: middle; }

/* The tracing-paper layers. */
.ly-shadow { fill: var(--ink); opacity: .06; }
.ly-sheet { fill: var(--card); fill-opacity: .86; }
.ly-edge { fill: none; stroke: var(--ink-3); stroke-width: .7; }
.ly-water { fill: color-mix(in srgb, var(--accent) 12%, var(--card)); }
.ly-land { fill: var(--paper-2); stroke: color-mix(in srgb, var(--ink-3) 45%, transparent); stroke-width: .6; }
.ly-river { fill: none; stroke: color-mix(in srgb, var(--accent) 55%, transparent); stroke-width: 1; stroke-linecap: round; }
.ly-grid { stroke: color-mix(in srgb, var(--accent) 16%, transparent); stroke-width: .5; }
.ly-pin { fill: var(--accent); }
.ly-a { stroke: var(--card); stroke-width: 1.1; stroke-linejoin: round; }
.ly-a1 { fill: color-mix(in srgb, var(--accent) 16%, var(--card)); }
.ly-a2 { fill: color-mix(in srgb, var(--accent) 30%, var(--card)); }
.ly-a3 { fill: color-mix(in srgb, var(--accent) 48%, var(--card)); }
.ly-a4 { fill: color-mix(in srgb, var(--accent) 66%, var(--card)); }
.ly-hl { fill: none; stroke: var(--ink); stroke-width: 1.4; stroke-linejoin: round; }
.ly-l { fill: none; stroke: var(--seal); stroke-linecap: round; }
.ly-l1 { stroke-width: 2; }
.ly-l2 { stroke-width: 1.3; opacity: .5; }
.ly-l3 { stroke-width: 1.1; opacity: .32; }
.ly-fix { fill: var(--card); stroke: var(--seal); stroke-width: 1; }
.ly-pt { stroke: var(--card); stroke-width: .8; }
.ly-pt1 { fill: color-mix(in srgb, var(--ink) 40%, var(--card)); }
.ly-pt2 { fill: color-mix(in srgb, var(--ink) 70%, var(--card)); }
.ly-pt3 { fill: var(--ink); }
.ly-halo { fill: color-mix(in srgb, var(--accent) 12%, transparent); stroke: var(--accent); stroke-width: 1.6; }
.ly-guide { stroke: var(--accent); stroke-width: 1; stroke-dasharray: 3 3; opacity: .7; }
.ly-lead { stroke: var(--ink-3); stroke-width: .8; }
.ly-ic { fill: none; stroke: var(--ink-2); stroke-width: 1.2; stroke-linecap: round; stroke-linejoin: round; }
.ly-label { font: 600 13px var(--sans); fill: var(--ink-2); }

/* Principle icons. */
.p-icon { width: 30px; height: 30px; margin: 0 0 10px; fill: none; stroke: var(--seal); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; display: block; }
.p-icon .dot { fill: var(--seal); stroke: none; }

/* Principles: the design philosophy, as plain cards (not numbered: they aren't steps). */
.principles { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; }
.principles > div { padding: 18px 0 0; border-top: 2px solid var(--ink); }
.principles h3 { margin: 0 0 6px; font-size: 1.2rem; }
.principles p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.aside-note { margin: 26px 0 0; color: var(--ink-3); font-size: 13.5px; }
@media (max-width: 760px) { .principles { grid-template-columns: 1fr; } }

/* Free vs Pro: a map legend rather than a pricing grid. */
.tiers { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; background: var(--card); }
.tier { padding: 30px 30px 26px; }
.tier + .tier { border-left: 1px solid var(--rule); background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 7%, var(--card)), var(--card) 60%); }
.tier h3 { margin: 0 0 4px; font-size: 1.6rem; display: flex; align-items: baseline; gap: 10px; }
.tier .tag { font: 600 11px/1 var(--mono); letter-spacing: .12em; padding: 4px 7px; border-radius: 5px; background: var(--accent); color: #fff; }
.tier .sub { color: var(--ink-3); margin: 0 0 18px; font-size: 15px; }
.tier ul { list-style: none; padding: 0; margin: 0; }
.tier li { padding: 9px 0 9px 28px; border-top: 1px dashed var(--rule); position: relative; font-size: 15.5px; }
.tier li::before { content: ""; position: absolute; left: 4px; top: 16px; width: 11px; height: 11px; border-radius: 3px; background: var(--ink-3); opacity: .55; }
.tier + .tier li::before { background: var(--accent); opacity: 1; border-radius: 50%; }
@media (max-width: 760px) { .tiers { grid-template-columns: 1fr; } .tier + .tier { border-left: 0; border-top: 1px solid var(--rule); } }
.ask-sample {
  margin-top: 18px; padding: 12px 14px; border-radius: 12px; border: 1px solid var(--rule);
  background: var(--paper); font-size: 15px; color: var(--ink-2); display: flex; gap: 10px; align-items: center;
}
.ask-sample::before { content: "✦"; color: var(--accent); }

/* Download */
.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr)); gap: 16px; }
.dl { padding: 20px; border: 1px solid var(--rule); border-radius: var(--radius); background: var(--card); }
.dl h3 { margin: 0 0 4px; font-size: 1.15rem; }
.dl p { margin: 0 0 14px; color: var(--ink-3); font-size: 14.5px; }
.todo {
  display: inline-block; font: 600 11.5px/1.4 var(--mono); letter-spacing: .06em; color: var(--seal);
  border: 1px dashed var(--seal); border-radius: 6px; padding: 2px 7px;
}
a.disabled { pointer-events: none; opacity: .55; }

/* ---- Help pages ---- */
.page-head { padding: 52px 0 30px; border-bottom: 1px solid var(--rule); }
.page-head h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 22px; }
.card {
  display: block; text-decoration: none; color: inherit; background: var(--card);
  border: 1px solid var(--rule); border-radius: var(--radius); overflow: hidden; transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.card .body { padding: 16px 18px 18px; }
.card h3 { margin: 0 0 6px; }
.card p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.card .meta { display: block; margin-top: 10px; font: 12px/1 var(--mono); color: var(--ink-3); letter-spacing: .05em; }
@media (prefers-reduced-motion: reduce) { .card, .card:hover { transition: none; transform: none; } }

/* Workflow steps */
.toc { font-size: 15px; color: var(--ink-2); padding: 14px 18px; border: 1px solid var(--rule); border-radius: 12px; background: var(--card); }
.toc ol { margin: 6px 0 0; padding-left: 22px; }
ol.steps { list-style: none; padding: 0; margin: 30px 0; counter-reset: step; }
ol.steps > li { counter-increment: step; position: relative; padding: 0 0 34px 58px; }
ol.steps > li::before {
  content: counter(step); position: absolute; left: 0; top: -2px; width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center; font: 600 16px/1 var(--serif); color: var(--ink);
  background: var(--card); border: 1px solid var(--rule);
}
ol.steps > li::after { content: ""; position: absolute; left: 19px; top: 42px; bottom: 6px; width: 1px; background: var(--rule); }
ol.steps > li:last-child::after { display: none; }
ol.steps h3 { margin: 4px 0 6px; font-size: 1.22rem; }
ol.steps p { margin: .4em 0; }
@media (max-width: 560px) { ol.steps > li { padding-left: 48px; } ol.steps > li::before { width: 32px; height: 32px; font-size: 14px; } ol.steps > li::after { left: 16px; top: 36px; } }
.note, .pro-note {
  margin: 14px 0; padding: 12px 16px; border-radius: 10px; font-size: 15.5px;
  border-left: 3px solid var(--ink-3); background: var(--paper-2);
}
.pro-note { border-left-color: var(--accent); background: var(--paper-2); background: color-mix(in srgb, var(--accent) 8%, var(--paper)); }
.pro-note strong:first-child { color: var(--accent-ink); }
.term { text-decoration: underline dotted; text-underline-offset: 3px; color: inherit; }

/* Glossary */
.search {
  position: sticky; top: 61px; z-index: 5; background: var(--paper); padding: 14px 0; border-bottom: 1px solid var(--rule);
}
.search input {
  width: 100%; font: inherit; font-size: 18px; padding: 12px 16px 12px 44px; border-radius: 12px;
  border: 1px solid var(--rule); background: var(--card) no-repeat 14px 50%; color: var(--ink);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%237a828c' stroke-width='2' stroke-linecap='round'%3E%3Ccircle cx='8' cy='8' r='6'/%3E%3Cpath d='m13 13 4 4'/%3E%3C/svg%3E");
}
.search input:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.search .count { font-size: 13.5px; color: var(--ink-3); margin-top: 8px; }
.letters { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 10px; }
.letters a { font: 600 13px/1 var(--mono); padding: 5px 7px; border-radius: 6px; color: var(--ink-2); text-decoration: none; }
.letters a:hover { background: var(--paper-2); }
dl.glossary { margin: 24px 0 60px; }
.entry { padding: 22px 0; border-bottom: 1px solid var(--rule); scroll-margin-top: 170px; }
.entry:target { background: linear-gradient(90deg, color-mix(in srgb, var(--accent) 9%, transparent), transparent 70%); }
.entry dt { font: 600 1.35rem/1.25 var(--serif); display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.entry dt .alt { font: 400 15px var(--sans); color: var(--ink-3); }
.entry dt a.anchor { font: 14px var(--mono); color: var(--ink-3); text-decoration: none; opacity: 0; }
.entry:hover dt a.anchor, .entry dt a.anchor:focus { opacity: 1; }
.entry dd { margin: 8px 0 0; max-width: 44em; }
.entry .where { font-size: 14.5px; color: var(--ink-2); margin-top: 10px; display: flex; gap: 8px; flex-wrap: wrap; align-items: baseline; }
.entry .where b { font: 600 11.5px/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--seal); }
mark { background: #f5e3a3; background: color-mix(in srgb, #f5c542 45%, transparent); color: inherit; border-radius: 3px; padding: 0 1px; }
.empty { padding: 40px 0; color: var(--ink-3); }

/* ---- Footer ---- */
.site-foot { border-top: 1px solid var(--rule); padding: 36px 0 48px; font-size: 14px; color: var(--ink-3); }
.site-foot .wrap { display: flex; gap: 24px; justify-content: space-between; flex-wrap: wrap; }
.site-foot a { color: var(--ink-2); }
.site-foot p { margin: 0 0 6px; max-width: 46em; }
@media (max-width: 640px) { .search { position: static; } .entry { scroll-margin-top: 20px; } }

/* ---- Download page ---- */
.claims, .formats { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); gap: 18px; }
.claims > div, .formats > div { padding: 22px 22px 20px; background: var(--card); border: 1px solid var(--rule); border-radius: var(--radius); }
.claims h3, .formats h3 { margin: 0 0 6px; font-size: 1.2rem; }
.claims p, .formats p { margin: 0; color: var(--ink-2); font-size: 15.5px; }
.formats > div { scroll-margin-top: 80px; }
code { font: .88em var(--mono); background: var(--paper-2); padding: 1px 5px; border-radius: 5px; }
.compare .tier h3 { font-size: 1.25rem; margin-bottom: 14px; }
.faq h3 { font-size: 1.2rem; margin: 1.8em 0 .4em; }
.faq h3:first-child { margin-top: 0; }
.faq p { margin: 0; color: var(--ink-2); }
.cta-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---- Hero showcase: one large shot per kind of map data, rotating ---- */
.showcase .frame { transform: none; }
.showcase .stage { position: relative; aspect-ratio: 1600 / 996; }
.showcase .slide { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; opacity: 0; transition: opacity .6s ease; }
.showcase .slide.is-on { opacity: 1; }
.showcase .kinds { display: none; gap: 6px; margin-top: 14px; flex-wrap: wrap; align-items: center; }
.js .showcase .kinds { display: flex; }
.showcase .kind {
  font: 600 14px/1 var(--sans); color: var(--ink-2); background: var(--card); cursor: pointer;
  border: 1px solid var(--rule); border-radius: 999px; padding: 8px 14px; min-height: 34px;
}
.showcase .kind:hover { border-color: var(--ink-3); color: var(--ink); }
.showcase .kind[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: #fff; }
:root[data-theme="dark"] .showcase .kind[aria-pressed="true"] { color: #0b1220; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .showcase .kind[aria-pressed="true"] { color: #0b1220; } }
.showcase .pause {
  margin-left: auto; width: 34px; height: 34px; display: grid; place-items: center; cursor: pointer;
  border: 1px solid var(--rule); border-radius: 50%; background: var(--card); color: var(--ink-2);
}
.showcase .pause svg { width: 14px; height: 14px; fill: currentColor; }
.showcase .pause .play, .showcase .pause[aria-pressed="true"] .bars { display: none; }
.showcase .pause[aria-pressed="true"] .play { display: inline; }
.showcase .kind-caption { margin: 8px 2px 0; font-size: 14px; color: var(--ink-3); min-height: 1.5em; }
@media (prefers-reduced-motion: reduce) { .showcase .slide { transition: none; } }