:root {
  --bg: #fff;
  --surface: #fff;
  --surface-muted: #f6f7f9;
  --ink: #16181d;
  --muted: #6f747e;
  --faint: #a8adb7;
  --line: #e8eaf0;
  --line-strong: #d8dbe3;
  --accent: #625df5;
  --accent-dark: #4e49dc;
  --accent-soft: #eeedff;
  --fictional: #ef6b9a;
  --person: #536df1;
  --good: #2ea47b;
  --shadow-xs: 0 1px 2px rgba(18, 22, 33, .04);
  --shadow-sm: 0 8px 24px rgba(18, 22, 33, .07);
  --shadow-lg: 0 24px 70px rgba(18, 22, 33, .14);
  --spring: cubic-bezier(.2, .9, .25, 1.15);
  --smooth: cubic-bezier(.22, 1, .36, 1);
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); scroll-behavior: smooth; }
body {
  min-height: 100vh; margin: 0; color: var(--ink); background: var(--bg);
  font: 15px/1.55 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont,
        "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei",
        "Noto Sans CJK SC", sans-serif;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
button, input, textarea { font: inherit; }
button { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
[hidden] { display: none !important; }
.icon-sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
button > svg { display: block; flex: 0 0 auto; }

/* Header */
.site-header {
  height: 74px; padding: 0 clamp(22px, 4vw, 64px); display: flex; align-items: center;
  justify-content: space-between; position: relative; z-index: 40; width: 100%; max-width: 100vw;
}
.brand {
  display: inline-flex; align-items: center; gap: 11px; color: var(--ink);
  text-decoration: none; font-size: 14px; font-weight: 720; letter-spacing: -.01em;
}
.brand-mark { width: 25px; height: 20px; position: relative; display: inline-block; }
.brand-mark::before, .brand-mark::after {
  content: ""; position: absolute; height: 1.5px; width: 12px; top: 9px;
  background: var(--line-strong); transform-origin: center;
}
.brand-mark::before { left: 3px; transform: rotate(30deg); }
.brand-mark::after { right: 3px; transform: rotate(-30deg); }
.brand-mark i { position: absolute; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); z-index: 1; }
.brand-mark i:nth-child(1) { left: 0; top: 7px; }
.brand-mark i:nth-child(2) { left: 9px; top: 0; }
.brand-mark i:nth-child(3) { right: 0; top: 11px; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.quiet-button {
  border: 0; background: transparent; padding: 7px 8px; display: flex; align-items: center;
  gap: 6px; color: var(--muted); font-size: 13px; cursor: pointer; border-radius: 10px;
  transition: color .22s ease, background .22s ease, transform .22s var(--spring);
}
.quiet-button svg { width: 17px; }
.quiet-button:hover { color: var(--ink); background: var(--surface-muted); transform: translateY(-1px); }
.language-switcher {
  position: relative; display: grid; grid-template-columns: repeat(3, 34px); padding: 3px;
  background: var(--surface-muted); border-radius: 11px; isolation: isolate;
}
.language-switcher button {
  height: 28px; border: 0; padding: 0; background: transparent; color: var(--muted);
  font-size: 11px; font-weight: 700; cursor: pointer; z-index: 1; transition: color .25s ease;
}
.language-switcher button.active { color: var(--ink); }
.language-indicator {
  position: absolute; width: 34px; height: 28px; left: 3px; top: 3px; border-radius: 8px;
  background: #fff; box-shadow: var(--shadow-xs), 0 2px 8px rgba(18,22,33,.06);
  transition: transform .38s var(--spring);
}

/* Search landing */
main { width: 100%; }
.hero {
  min-height: calc(100vh - 130px); padding: clamp(72px, 12vh, 142px) 22px 80px;
  display: flex; flex-direction: column; align-items: center;
  transition: min-height .65s var(--smooth), padding .65s var(--smooth), opacity .35s ease;
}
.hero-copy { width: min(760px, 100%); min-width: 0; text-align: center; animation: rise-in .8s var(--smooth) both; }
.eyebrow {
  margin: 0 0 13px; color: var(--accent); text-transform: uppercase; letter-spacing: .14em;
  font-size: 11px; font-weight: 760;
}
h1 { margin: 0 auto; max-width: 100%; font-size: clamp(40px, 6.2vw, 72px); line-height: 1.08; letter-spacing: -.052em; font-weight: 760; }
h1 span { display: inline; }
.hero-subtitle { margin: 20px auto 0; color: var(--muted); font-size: clamp(15px, 1.7vw, 18px); }
.search-card {
  width: min(960px, 100%); margin-top: 48px; padding: 14px; display: grid;
  position: relative; z-index: 20;
  grid-template-columns: minmax(0, 1fr) 38px minmax(0, 1fr) auto; gap: 8px;
  align-items: end; background: #fff; border: 1px solid var(--line); border-radius: 20px;
  box-shadow: 0 18px 55px rgba(25, 31, 44, .09), var(--shadow-xs);
  animation: rise-in .8s .08s var(--smooth) both;
  transition: box-shadow .3s ease, border-color .3s ease, transform .3s ease;
}
.search-card:focus-within { border-color: #d8d6ff; box-shadow: 0 22px 65px rgba(38, 41, 84, .13); transform: translateY(-2px); }
.picker { position: relative; min-width: 0; }
.picker label { display: block; margin: 0 12px 6px; font-size: 11px; font-weight: 700; color: var(--muted); }
.input-wrap {
  height: 54px; display: flex; align-items: center; border-radius: 13px;
  background: var(--surface-muted); position: relative; overflow: hidden;
  transition: background .22s ease, box-shadow .22s ease;
}
.input-wrap:focus-within { background: #f2f3f7; box-shadow: inset 0 0 0 1.5px var(--accent); }
.picker input {
  width: 100%; height: 100%; min-width: 0; border: 0; outline: 0; background: transparent;
  padding: 0 40px 0 14px; color: var(--ink); font-size: 16px; font-weight: 580;
}
.picker input::placeholder { color: var(--faint); font-weight: 450; }
.picker input::-webkit-search-cancel-button { appearance: none; }
.picker.selected input { padding-left: 48px; }
.selected-avatar {
  width: 30px; height: 30px; border-radius: 10px; position: absolute; left: 10px;
  display: grid; place-items: center; color: #fff; background: var(--person);
  font-size: 11px; font-weight: 780; opacity: 0; transform: scale(.65) rotate(-8deg);
  transition: opacity .28s ease, transform .36s var(--spring);
}
.picker.selected .selected-avatar { opacity: 1; transform: scale(1) rotate(0); }
.picker.selected.fictional .selected-avatar { background: var(--fictional); }
.clear-picker {
  position: absolute; right: 8px; width: 30px; height: 30px; border: 0; border-radius: 9px;
  background: transparent; color: var(--faint); display: grid; place-items: center; cursor: pointer;
  opacity: 0; transform: scale(.7); pointer-events: none;
  transition: opacity .2s ease, transform .25s var(--spring), background .2s, color .2s;
}
.clear-picker svg { width: 15px; }
.picker.selected .clear-picker, .picker input:not(:placeholder-shown) + .clear-picker { opacity: 1; transform: scale(1); pointer-events: auto; }
.clear-picker:hover { background: #e8e9ee; color: var(--ink); }
.swap-button {
  width: 38px; height: 54px; border: 0; background: transparent; color: var(--faint);
  border-radius: 12px; cursor: pointer; display: grid; place-items: center;
  transition: color .22s, transform .38s var(--spring), background .22s;
}
.swap-button:hover { color: var(--accent); background: var(--accent-soft); transform: rotate(180deg); }
.search-button {
  height: 54px; padding: 0 22px; border: 0; border-radius: 13px; display: flex;
  align-items: center; justify-content: center; gap: 11px; background: var(--ink); color: #fff;
  white-space: nowrap; font-size: 14px; font-weight: 700; cursor: pointer;
  box-shadow: 0 8px 20px rgba(17,19,25,.15);
  transition: background .22s, transform .28s var(--spring), box-shadow .22s, opacity .2s;
}
.search-button svg { width: 18px; transition: transform .28s var(--spring); }
.search-button:hover:not(:disabled) { background: var(--accent); transform: translateY(-2px); box-shadow: 0 11px 25px rgba(98,93,245,.28); }
.search-button:hover:not(:disabled) svg { transform: translateX(3px); }
.search-button:active:not(:disabled) { transform: translateY(0) scale(.98); }
.search-button:disabled { opacity: .28; cursor: not-allowed; box-shadow: none; }
.suggestions {
  position: absolute; z-index: 60; left: -2px; right: -2px; top: calc(100% + 9px);
  padding: 7px; max-height: min(390px, 50vh); overflow: auto; background: rgba(255,255,255,.98);
  border: 1px solid var(--line); border-radius: 15px; box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-9px) scale(.985); transform-origin: top;
  transition: opacity .2s ease, visibility .2s, transform .32s var(--spring);
}
.suggestions.open { opacity: 1; visibility: visible; transform: translateY(0) scale(1); }
.suggestion {
  width: 100%; border: 0; background: transparent; padding: 10px; border-radius: 11px;
  display: grid; grid-template-columns: 38px 1fr auto; align-items: center; gap: 10px;
  text-align: left; cursor: pointer; opacity: 0; transform: translateY(-5px);
  animation: suggestion-in .35s var(--smooth) forwards;
  transition: background .18s ease, transform .18s ease;
}
.suggestion:hover, .suggestion.active { background: var(--surface-muted); transform: translateX(2px); }
.suggestion-avatar { width: 38px; height: 38px; display: grid; place-items: center; border-radius: 12px; background: #e9edff; color: var(--person); font-weight: 800; }
.suggestion.fictional .suggestion-avatar { background: #fff0f5; color: var(--fictional); }
.suggestion-copy { min-width: 0; }
.suggestion-name { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 670; }
.suggestion-meta { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--muted); font-size: 12px; margin-top: 1px; }
.suggestion-kind { padding: 3px 7px; border-radius: 99px; background: #fff; border: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.suggest-loading,.suggest-error { min-height: 68px; display: flex; align-items: center; justify-content: center; gap: 10px; padding: 14px; color: var(--muted); font-size: 12px; }
.suggest-loading i { width: 17px; height: 17px; flex: 0 0 auto; border: 2px solid var(--line-strong); border-top-color: var(--accent); border-radius: 50%; animation: orbit .72s linear infinite; }
.suggest-error i { width: 22px; height: 22px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 8px; background: #fff1f1; color: #a33c45; font-style: normal; font-weight: 760; }
.suggest-empty { display: grid; justify-items: center; gap: 9px; padding: 19px 14px; color: var(--muted); text-align: center; font-size: 13px; }
.suggest-contribute { border: 0; border-radius: 9px; padding: 6px 10px; background: var(--accent-soft); color: var(--accent); font-size: 11px; cursor: pointer; }
.examples {
  margin-top: 22px; display: flex; align-items: center; justify-content: center; flex-wrap: wrap;
  gap: 7px; color: var(--faint); font-size: 12px; animation: rise-in .8s .16s var(--smooth) both;
}
.examples button {
  border: 0; padding: 5px 9px; border-radius: 99px; background: transparent; color: var(--muted);
  cursor: pointer; transition: color .2s, background .2s, transform .25s var(--spring);
}
.examples button:hover { background: var(--accent-soft); color: var(--accent); transform: translateY(-1px); }

/* Results */
.result-workspace { padding: 22px clamp(18px, 4vw, 64px) 54px; animation: workspace-in .7s var(--smooth) both; }
.result-heading { display: flex; justify-content: space-between; align-items: end; gap: 28px; max-width: 1500px; margin: 0 auto 18px; }
.back-link { border: 0; padding: 4px 0; background: transparent; color: var(--muted); font-size: 12px; cursor: pointer; }
.back-link span:first-child { display: inline-block; margin-right: 4px; transition: transform .24s var(--spring); }
.back-link:hover { color: var(--accent); }
.back-link:hover span:first-child { transform: translateX(-4px); }
.route-title { margin-top: 8px; display: flex; align-items: center; gap: 12px; font-size: clamp(21px, 3vw, 34px); font-weight: 740; letter-spacing: -.035em; }
.route-title i { color: var(--line-strong); font-style: normal; font-weight: 400; }
.result-summary { text-align: right; color: var(--muted); font-size: 12px; }
.result-summary strong { display: block; color: var(--ink); font-size: 28px; line-height: 1.1; letter-spacing: -.035em; }
.path-switcher { max-width: 1500px; min-height: 35px; margin: 0 auto 12px; display: flex; gap: 7px; overflow-x: auto; scrollbar-width: none; }
.path-switcher::-webkit-scrollbar { display: none; }
.path-tab {
  flex: none; min-width: 80px; border: 1px solid var(--line); background: #fff; padding: 7px 11px;
  border-radius: 10px; color: var(--muted); cursor: pointer; font-size: 11px; text-align: left;
  transition: border-color .2s, background .2s, color .2s, transform .25s var(--spring), box-shadow .2s;
}
.path-tab b { display: block; color: var(--ink); font-size: 12px; }
.path-tab:hover { border-color: #c8c5ff; transform: translateY(-1px); }
.path-tab.active { color: var(--accent); background: var(--accent-soft); border-color: transparent; box-shadow: inset 0 0 0 1px rgba(98,93,245,.08); }
.path-tab.active b { color: var(--accent-dark); }
.map-card {
  max-width: 1500px; height: min(690px, calc(100vh - 250px)); min-height: 440px; margin: 0 auto;
  border: 1px solid var(--line); border-radius: 23px; position: relative; overflow: hidden;
  background: #fbfbfd; box-shadow: var(--shadow-xs);
}
.map-card::before {
  content: ""; position: absolute; inset: 0; pointer-events: none; opacity: .48;
  background-image: radial-gradient(#d7d9e0 .7px, transparent .7px); background-size: 22px 22px;
  mask-image: radial-gradient(ellipse at center, black 8%, transparent 73%);
}
.map-toolbar {
  height: 52px; position: absolute; left: 12px; right: 12px; top: 10px; z-index: 12;
  display: flex; align-items: center; justify-content: space-between; pointer-events: none;
}
.map-note {
  max-width: calc(100% - 160px); padding: 8px 11px; border: 1px solid rgba(232,234,240,.9);
  border-radius: 10px; background: rgba(255,255,255,.85); backdrop-filter: blur(12px);
  color: var(--muted); font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  pointer-events: auto; box-shadow: var(--shadow-xs);
}
.map-actions { display: flex; gap: 5px; padding: 4px; border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.9); backdrop-filter: blur(12px); pointer-events: auto; box-shadow: var(--shadow-xs); }
.map-actions button { width: 32px; height: 32px; padding: 0; line-height: 0; border: 0; border-radius: 8px; background: transparent; color: var(--muted); cursor: pointer; display: grid; place-items: center; transition: background .2s, color .2s, transform .25s var(--spring); }
.map-actions button svg { width: 17px; height: 17px; margin: 0; }
.map-actions button:hover { background: var(--surface-muted); color: var(--accent); transform: translateY(-1px); }
.relation-map { width: 100%; height: 100%; position: relative; overflow: hidden; isolation: isolate; contain: paint; background: #fff; }
.relation-map > svg {
  width: 100%; height: 100%; display: block; touch-action: none; cursor: grab;
  overflow: hidden; background: #fff; backface-visibility: hidden;
  /* The generic icon rule adds a stroke to SVGs.  The graph supplies strokes
     per shape, so clear inheritance here or every label becomes outlined. */
  stroke: none;
}
.relation-map > svg.dragging { cursor: grabbing; }
.relation-map > svg.dragging .relation-line { animation: none; transition: none; }
.relation-map > svg.dragging .map-node-card { filter: none; transition: none; }
.map-loading { position: absolute; inset: 0; z-index: 20; padding: 24px; background: rgba(255,255,255,.94); backdrop-filter: blur(10px); display: grid; place-items: center; animation: fade-in .3s ease both; }
.query-flow { width: min(540px,100%); display: grid; gap: 18px; }
.query-stages { width: 100%; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4,1fr); list-style: none; }
.query-stages li { min-width: 0; position: relative; display: grid; justify-items: center; gap: 7px; color: var(--faint); font-size: 10px; font-weight: 680; transition: color .35s ease; }
.query-stages li:not(:last-child)::after { content:""; position:absolute; z-index:0; left:calc(50% + 15px); top:12px; width:calc(100% - 30px); height:1px; background:var(--line-strong); transition:background .45s ease; }
.query-stages li i { width: 25px; height: 25px; z-index: 1; display: grid; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; background: #fff; color: var(--faint); font-style: normal; font-size: 9px; font-variant-numeric: tabular-nums; transition: .4s var(--smooth); }
.query-stages li.active { color: var(--ink); }
.query-stages li.active i { border-color: var(--accent); background: var(--accent); color: #fff; box-shadow: 0 0 0 6px var(--accent-soft); transform: scale(1.04); }
.query-stages li.done { color: var(--accent); }
.query-stages li.done i { border-color: #c9c6ff; background: var(--accent-soft); color: var(--accent); }
.query-stages li.done:not(:last-child)::after { background: #c9c6ff; }
.query-state-card { min-height: 82px; display: flex; align-items: center; gap: 15px; padding: 17px 18px; border: 1px solid var(--line); border-radius: 17px; background: #fff; box-shadow: var(--shadow-sm); }
.query-state-card > div { min-width: 0; }
.query-state-card strong,.query-state-card span { display: block; }
.query-state-card strong { font-size: 16px; }
.query-state-card > div > span { margin-top: 3px; color: var(--muted); font-size: 11px; line-height: 1.55; }
.query-state-mark { width: 48px; height: 48px; flex: 0 0 auto; display: flex !important; align-items: center; justify-content: center; gap: 4px; border-radius: 15px; background: var(--accent-soft); }
.query-state-mark i { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: query-dot 1.1s ease-in-out infinite; }
.query-state-mark i:nth-child(2) { animation-delay: .14s; }.query-state-mark i:nth-child(3) { animation-delay: .28s; }
.map-loading[data-phase="queued"] .query-state-mark { background: #f3f4f7; }
.map-loading[data-phase="queued"] .query-state-mark i { animation: query-pulse 1.7s ease-in-out infinite; }
.map-loading[data-phase="running"] .query-state-mark { background: #fff0f5; }
.map-loading[data-phase="running"] .query-state-mark i { background: var(--fictional); }
.map-loading[data-phase="done"] .query-state-mark i { animation: none; background: var(--good); }
.query-queue { padding: 15px 17px; border: 1px solid var(--line); border-radius: 16px; background: #fafafd; animation: rise-in .4s var(--smooth) both; }
.query-position { margin-bottom: 12px; color: var(--accent); font-size: 12px; font-weight: 730; text-align: center; }
.query-counts { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.query-counts > div { padding: 12px 14px; border-radius: 12px; background: #fff; text-align: center; }
.query-counts span { display: block; color: var(--muted); font-size: 10px; }
.query-counts p { margin: 2px 0 0; line-height: 1; }
.query-counts b { color: var(--ink); font-size: 25px; font-variant-numeric: tabular-nums; letter-spacing: -.04em; }
.query-counts small { margin-left: 4px; color: var(--muted); font-size: 10px; }
.query-meter { position: relative; height: 3px; overflow: hidden; border-radius: 99px; background: var(--line); }
.query-meter i {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  contain: paint;
  clip-path: inset(0 82% 0 0 round 99px);
  border-radius: inherit;
  background-color: var(--accent);
  transition: clip-path .65s var(--smooth), background-color .35s;
}
.query-meter i::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    90deg,
    transparent 0 68px,
    rgba(255,255,255,.82) 112px,
    transparent 156px 240px
  );
  animation: meter-glint 3600s linear infinite;
}
.map-loading[data-phase="queued"] .query-meter i { clip-path: inset(0 52% 0 0 round 99px); }
.map-loading[data-phase="running"] .query-meter i { clip-path: inset(0 18% 0 0 round 99px); background-color: var(--fictional); }
.map-loading[data-phase="done"] .query-meter i { clip-path: inset(0 0 0 0 round 99px); background-color: var(--good); }
.map-loading .cancel-query { justify-self: center; margin-top: -3px; }

/* SVG map */
.map-viewport { transform-origin: 0 0; }
.relation-line { fill: none; stroke: #cfd2dc; stroke-width: 2.2; vector-effect: non-scaling-stroke; transition: stroke .22s, stroke-width .22s, opacity .22s; animation: draw-line .8s var(--smooth) both; }
.relation-hit { fill: none; stroke: transparent; stroke-width: 22; pointer-events: stroke; cursor: pointer; }
.map-edge { cursor: pointer; outline: 0; }
.map-edge:hover .relation-line, .map-edge:focus .relation-line { stroke: var(--accent); stroke-width: 3.2; }
.edge-label-bg { fill: rgba(255,255,255,.96); stroke: var(--line); stroke-width: 1; vector-effect: non-scaling-stroke; transition: fill .2s, stroke .2s; }
.edge-label-text { fill: var(--muted); font-size: 11px; font-weight: 620; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.map-edge:hover .edge-label-bg, .map-edge:focus .edge-label-bg { fill: var(--accent-soft); stroke: #c8c5ff; }
.map-edge:hover .edge-label-text, .map-edge:focus .edge-label-text { fill: var(--accent-dark); }
.map-node { cursor: pointer; outline: 0; transform-box: fill-box; transform-origin: center; }
.map-node.is-dragging { cursor: grabbing; }
.map-node.is-dragging .map-node-card { transition: none; }
.map-node-card { fill: #fff; stroke: var(--line); stroke-width: 1.2; vector-effect: non-scaling-stroke; filter: drop-shadow(0 7px 12px rgba(24,29,40,.06)); transition: stroke .25s, filter .25s; }
.map-node:hover .map-node-card, .map-node:focus .map-node-card { stroke: #b9b5ff; filter: drop-shadow(0 10px 17px rgba(64,60,150,.13)); }
.map-avatar { fill: #e9edff; }
.map-node.fictional .map-avatar { fill: #fff0f5; }
.map-initial { fill: var(--person); font-size: 14px; font-weight: 800; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.map-node.fictional .map-initial { fill: var(--fictional); }
.map-name { fill: var(--ink); font-size: 12px; font-weight: 700; text-anchor: middle; pointer-events: none; }
.map-kind { fill: var(--muted); font-size: 9px; font-weight: 520; text-anchor: middle; pointer-events: none; }
.map-node.enter { animation: node-pop .55s var(--spring) both; animation-delay: var(--delay); }
.map-node.endpoint .map-node-card { stroke: var(--accent); stroke-width: 1.8; }
.map-node.endpoint:last-of-type .map-node-card { stroke: var(--fictional); }

.path-steps-float {
  position: fixed; z-index: 32; left: 50%; bottom: 22px; transform: translateX(-50%);
  width: min(680px, calc(100vw - 28px)); max-height: min(470px, 62vh); overflow: auto;
  padding: 8px; border: 1px solid var(--line); border-radius: 17px; background: rgba(255,255,255,.96);
  backdrop-filter: blur(18px); box-shadow: var(--shadow-lg); animation: float-in .42s var(--spring) both;
}
.step-row { display: grid; grid-template-columns: 36px 1fr; gap: 10px; padding: 9px; border-radius: 11px; }
.step-row:hover { background: var(--surface-muted); }
.step-index { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 9px; color: var(--accent); background: var(--accent-soft); font-size: 11px; font-weight: 800; }
.step-row b { display: block; font-size: 13px; }
.step-row span { color: var(--muted); font-size: 11px; }

/* Floating information */
.hover-card {
  position: fixed; z-index: 80; width: min(280px, calc(100vw - 24px)); padding: 11px 12px;
  border: 1px solid var(--line); border-radius: 12px; background: rgba(255,255,255,.96);
  backdrop-filter: blur(14px); box-shadow: var(--shadow-sm); pointer-events: none;
  animation: hover-in .2s var(--smooth) both;
}
.hover-card b { display: block; font-size: 12px; }
.hover-card span { display: block; color: var(--muted); font-size: 11px; margin-top: 2px; }
.toast {
  position: fixed; z-index: 100; left: 50%; bottom: 28px; transform: translateX(-50%);
  max-width: min(520px, calc(100vw - 28px)); padding: 11px 15px; border-radius: 12px;
  background: #1b1d23; color: #fff; box-shadow: var(--shadow-lg); font-size: 12px;
  animation: toast-in .4s var(--spring) both;
}
.cancel-query{margin-top:12px;border:1px solid var(--line);border-radius:10px;padding:8px 13px;background:#fff;color:var(--muted);font-size:11px;cursor:pointer;transition:.2s}.cancel-query:hover{border-color:#f0b7bd;color:#b84450;transform:translateY(-1px)}
.job-notice{position:fixed;z-index:85;right:18px;bottom:18px;width:min(520px,calc(100vw - 28px));display:grid;grid-template-columns:minmax(0,1fr) auto auto;align-items:center;gap:9px;padding:13px 14px;border:1px solid var(--line);border-radius:15px;background:rgba(255,255,255,.96);backdrop-filter:blur(16px);box-shadow:var(--shadow-lg);animation:notice-in .4s var(--spring) both}.job-notice b,.job-notice span{display:block}.job-notice b{font-size:12px}.job-notice span{margin-top:2px;color:var(--muted);font-size:10px}.job-notice button{border:1px solid var(--line);border-radius:9px;padding:7px 10px;background:#fff;font-size:10px;cursor:pointer}.job-notice>button:not(.job-notice-cancel){border-color:transparent;background:var(--ink);color:#fff}.job-notice-cancel{color:var(--muted)}
.history-modal{width:min(680px,calc(100vw - 24px));max-height:min(720px,calc(100vh - 36px));max-height:min(720px,calc(100dvh - 36px));display:flex;flex-direction:column;overflow:hidden}.history-modal>.eyebrow,.history-modal>h2,.history-note{flex:0 0 auto}.history-note{margin-top:-4px;color:var(--muted)}.history-list{min-height:0;display:grid;gap:7px;margin-top:20px;padding:0 4px 2px 0;overflow-y:auto;overscroll-behavior:contain;scrollbar-gutter:stable;-webkit-overflow-scrolling:touch;touch-action:pan-y}.history-entry{width:100%;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:12px;border:1px solid var(--line);border-radius:13px;padding:12px 13px;background:#fff;text-align:left;cursor:pointer;transition:.22s}.history-entry:hover{border-color:#d4d1ff;background:#fbfaff;transform:translateY(-1px)}.history-entry b,.history-entry span{display:block}.history-entry b{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.history-entry span{margin-top:3px;color:var(--muted);font-size:10px}.history-entry i{font-style:normal;color:var(--accent);font-size:10px}.history-empty{padding:35px 10px;border:1px dashed var(--line);border-radius:13px;color:var(--muted);text-align:center;font-size:11px}
.overlay { position: fixed; inset: 0; z-index: 90; background: rgba(22,24,29,.2); backdrop-filter: blur(4px); animation: fade-in .25s ease both; }
.overlay-dismiss { position: absolute; inset: 0; width: 100%; border: 0; background: transparent; cursor: default; }
.drawer {
  position: absolute; top: 10px; right: 10px; bottom: 10px; width: min(470px, calc(100vw - 20px));
  overflow: auto; padding: 30px; background: #fff; border: 1px solid rgba(255,255,255,.6);
  border-radius: 20px; box-shadow: var(--shadow-lg); animation: drawer-in .5s var(--smooth) both;
}
.drawer-close { position: absolute; right: 15px; top: 15px; width: 34px; height: 34px; padding: 0; line-height: 0; border: 0; border-radius: 10px; background: var(--surface-muted); color: var(--muted); cursor: pointer; display: grid; place-items: center; transition: color .2s, transform .3s var(--spring); }
.drawer-close:hover { color: var(--ink); transform: rotate(5deg) scale(1.05); }
.drawer-close svg { width: 16px; height: 16px; margin: 0; }
.drawer-head { padding-right: 35px; }
.drawer-head .kind-pill { display: inline-block; padding: 4px 8px; border-radius: 99px; background: var(--accent-soft); color: var(--accent); font-size: 10px; font-weight: 760; }
.drawer h2 { margin: 12px 0 4px; font-size: 27px; line-height: 1.15; letter-spacing: -.035em; }
.drawer-description { margin: 8px 0 0; color: var(--muted); }
.drawer-meta { display: flex; gap: 12px; flex-wrap: wrap; margin: 16px 0; color: var(--muted); font-size: 11px; }
.drawer-actions { display: flex; gap: 8px; margin: 18px 0 24px; }
.drawer-actions button, .drawer-actions a { flex: 1; padding: 9px 11px; border: 1px solid var(--line); border-radius: 10px; background: #fff; color: var(--ink); text-decoration: none; text-align: center; cursor: pointer; font-size: 12px; transition: border-color .2s, color .2s, transform .25s var(--spring); }
.drawer-actions button:hover, .drawer-actions a:hover { border-color: #bdb9ff; color: var(--accent); transform: translateY(-1px); }
.drawer-section { margin-top: 24px; }
.drawer-section h3 { margin: 0 0 9px; color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .1em; }
.edge-story { margin: 20px 0 8px; padding: 16px; border-radius: 14px; background: var(--surface-muted); }
.edge-story .people-line { font-weight: 700; }
.edge-story .edge-verb { color: var(--accent); margin: 5px 0; font-size: 13px; }
.evidence-list { list-style: none; padding: 0; margin: 0; }
.evidence-list li { padding: 11px 0; border-top: 1px solid var(--line); font-size: 12px; }
.evidence-list a { color: var(--accent); text-decoration: none; }
.evidence-list small { display: block; color: var(--muted); margin-top: 3px; overflow-wrap: anywhere; }
.connection-list { list-style: none; padding: 0; margin: 0; }
.connection-list button { width: 100%; border: 0; border-top: 1px solid var(--line); padding: 10px 2px; background: transparent; text-align: left; cursor: pointer; }
.connection-list button b { display: block; font-size: 12px; }
.connection-list button span { color: var(--muted); font-size: 10px; }
.connection-list button:hover b { color: var(--accent); }
.drawer-skeleton i { display: block; height: 13px; margin: 10px 0; border-radius: 8px; background: linear-gradient(90deg,#f1f2f5,#fafafd,#f1f2f5); background-size: 200%; animation: shimmer 1.4s infinite; }
.drawer-skeleton i:nth-child(1) { width: 42%; height: 28px; }
.drawer-skeleton i:nth-child(2) { width: 90%; }
.drawer-skeleton i:nth-child(3) { width: 70%; }

.modal-overlay { display: grid; place-items: center; padding: 18px; }
.modal { width: min(620px, 100%); padding: clamp(28px, 5vw, 48px); position: relative; border-radius: 22px; background: #fff; box-shadow: var(--shadow-lg); animation: modal-in .5s var(--spring) both; }
.modal h2 { margin: 0; font-size: clamp(25px, 4vw, 36px); line-height: 1.17; letter-spacing: -.04em; }
.modal > p:not(.eyebrow) { color: var(--muted); margin: 16px 0 0; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 28px; }
.about-modal { max-height: calc(100vh - 36px); max-height: calc(100dvh - 36px); overflow-y: auto; overscroll-behavior: contain; -webkit-overflow-scrolling: touch; }
.about-grid div { padding: 14px; border-radius: 13px; background: var(--surface-muted); }
.about-grid b { display: block; font-size: 12px; margin-bottom: 4px; }
.about-grid span { display: block; color: var(--muted); font-size: 11px; }
.about-author { margin-top: 25px; padding-top: 20px; border-top: 1px solid var(--line); }
.about-author-label { display: block; margin-bottom: 9px; color: var(--faint); font-size: 10px; font-weight: 720; letter-spacing: .08em; text-transform: uppercase; }
.about-links { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.about-links > button,.about-links > a { min-width: 0; height: 58px; padding: 9px 11px; display: grid; grid-template-columns: 34px minmax(0,1fr) 17px; align-items: center; gap: 10px; border: 1px solid var(--line); border-radius: 13px; background: #fff; color: var(--ink); text-align: left; text-decoration: none; cursor: pointer; transition: border-color .22s, background .22s, transform .28s var(--spring), box-shadow .22s; }
.about-links > button:hover,.about-links > a:hover { border-color: #cfccff; background: #fbfaff; box-shadow: var(--shadow-xs); transform: translateY(-1px); }
.about-link-icon { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; color: var(--accent); background: var(--accent-soft); }
.about-link-icon.is-dark { color: #fff; background: var(--ink); }
.about-link-icon svg { width: 17px; height: 17px; }
.about-links b,.about-links small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.about-links b { font-size: 12px; }.about-links small { margin-top: 1px; color: var(--muted); font-size: 10px; }
.about-link-arrow { width: 15px; height: 15px; color: var(--faint); transition: color .2s, transform .25s var(--spring); }
.about-links > button:hover .about-link-arrow,.about-links > a:hover .about-link-arrow { color: var(--accent); transform: translate(1px,-1px); }

.contribute-modal { width: min(660px, 100%); }
.contribute-modal form { margin-top: 26px; }
.contribute-modal label { display: block; margin-bottom: 8px; color: var(--muted); font-size: 11px; font-weight: 720; }
.contribute-modal textarea {
  width: 100%; min-height: 170px; resize: vertical; border: 1px solid var(--line);
  border-radius: 14px; outline: 0; padding: 14px 15px; color: var(--ink); background: var(--surface-muted);
  line-height: 1.65; transition: border-color .22s, background .22s, box-shadow .22s;
}
.contribute-modal textarea:focus { border-color: #bbb8ff; background: #fff; box-shadow: 0 0 0 4px var(--accent-soft); }
.contribute-modal textarea::placeholder { color: var(--faint); }
.contribute-meta { display: flex; justify-content: flex-end; gap: 18px; margin-top: 7px; color: var(--faint); font-size: 10px; }
.contribute-meta output.near-limit { color: #d17c28; }
.modal-primary {
  width: 100%; height: 48px; margin-top: 20px; border: 0; border-radius: 12px;
  background: var(--ink); color: #fff; cursor: pointer; font-size: 13px; font-weight: 720;
  transition: background .22s, transform .28s var(--spring), opacity .2s;
}
.modal-primary:hover:not(:disabled) { background: var(--accent); transform: translateY(-1px); }
.modal-primary:disabled { opacity: .38; cursor: wait; }
.submission-result { margin-top: 12px; padding: 11px 13px; border-radius: 11px; background: #eff9f5; color: #23765a; font-size: 12px; animation: rise-in .35s var(--smooth) both; }
.submission-result.error { background: #fff1f1; color: #a33c45; }
.auth-overlay { z-index: 120; background: rgba(255,255,255,.82); backdrop-filter: blur(13px); }
.auth-modal { width: min(570px,100%); text-align: center; }
.auth-modal > p:not(.eyebrow) { max-width: 470px; margin-left: auto; margin-right: auto; }
.auth-mark { width: 66px; height: 44px; margin: 0 auto 23px; position: relative; }
.auth-mark::before,.auth-mark::after { content:""; position:absolute; top:21px; width:30px; height:1px; background:var(--line-strong); }
.auth-mark::before { left:8px; transform:rotate(-27deg); }.auth-mark::after { right:8px; transform:rotate(27deg); }
.auth-mark span { position:absolute; width:13px; height:13px; border-radius:50%; z-index:1; background:var(--accent); box-shadow:0 0 0 6px var(--accent-soft); }
.auth-mark span:nth-child(1){left:0;top:20px}.auth-mark span:nth-child(2){left:27px;top:2px}.auth-mark span:nth-child(3){right:0;top:20px;background:var(--fictional);box-shadow:0 0 0 6px #fff0f5}
.auth-button { margin-top: 25px; }
.auth-progress { margin-top:18px; display:flex; align-items:center; justify-content:center; gap:9px; color:var(--muted); font-size:11px; }
.auth-progress i { width:13px; height:13px; border:2px solid var(--line-strong); border-top-color:var(--accent); border-radius:50%; animation:orbit .75s linear infinite; }
.auth-note { display:block; max-width:440px; margin:18px auto 0; color:var(--faint); font-size:10px; }
.auth-modal .submission-result { margin-top:15px; text-align:left; }

/* The free-use notice is deliberately shown before account verification. */
.support-overlay {
  z-index: 130; overflow: auto; background:
    radial-gradient(circle at 16% 12%, rgba(98,93,245,.12), transparent 30%),
    radial-gradient(circle at 87% 88%, rgba(239,107,154,.11), transparent 31%),
    rgba(251,251,254,.94); backdrop-filter: blur(18px);
}
.support-modal { width: min(610px,100%); overflow: hidden; padding: clamp(30px,5vw,50px); }
.support-modal::before {
  content: ""; position: absolute; width: 210px; height: 210px; right: -108px; top: -118px;
  border-radius: 50%; border: 1px solid rgba(98,93,245,.11); box-shadow: 0 0 0 28px rgba(98,93,245,.035);
}
.support-close {
  position: absolute; z-index: 3; right: 16px; top: 16px; width: 36px; height: 36px;
  padding: 0; line-height: 0; display: grid; place-items: center; border: 0; border-radius: 11px;
  color: var(--muted); background: var(--surface-muted); opacity: 0; visibility: hidden;
  transform: scale(.82) rotate(-8deg); pointer-events: none;
  transition: opacity 5s linear, transform 5s var(--smooth), color .2s, background .2s;
}
.support-close svg { width: 16px; height: 16px; margin: 0; }
.support-close.is-revealing { visibility: visible; opacity: 1; transform: scale(1) rotate(0); }
.support-close.is-ready { pointer-events: auto; cursor: pointer; }
.support-close.is-ready:hover { color: var(--ink); background: #eff0f4; }
.support-orbit { width: 74px; height: 66px; position: relative; margin: -2px 0 24px; }
.support-orbit::before,.support-orbit::after { content:""; position:absolute; height:1px; width:31px; left:20px; top:29px; background:var(--line-strong); transform-origin:left center; }
.support-orbit::before { transform:rotate(-32deg); }.support-orbit::after { transform:rotate(32deg); }
.support-orbit i { position:absolute; width:14px; height:14px; border-radius:50%; z-index:1; background:var(--accent); box-shadow:0 0 0 7px var(--accent-soft); }
.support-orbit i:nth-child(1){left:0;top:23px}.support-orbit i:nth-child(2){left:30px;top:0}.support-orbit i:nth-child(3){left:30px;bottom:0;background:var(--fictional);box-shadow:0 0 0 7px #fff0f5}.support-orbit i:nth-child(4){right:0;top:23px}
.support-lead { max-width: 510px; font-size: 14px; line-height: 1.75; }
.support-reasons { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 27px; }
.support-reasons > div { min-width: 0; display: flex; align-items: flex-start; gap: 12px; padding: 15px; border: 1px solid var(--line); border-radius: 15px; background: #fafafd; }
.support-icon { width: 35px; height: 35px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 11px; color: var(--accent); background: var(--accent-soft); }
.support-icon.is-pink { color: var(--fictional); background: #fff0f5; }
.support-icon svg { width: 18px; height: 18px; }
.support-reasons p { min-width: 0; margin: 0; }
.support-reasons b,.support-reasons small { display: block; }
.support-reasons b { font-size: 12px; }
.support-reasons small { margin-top: 4px; color: var(--muted); font-size: 10px; line-height: 1.55; }
.support-follow { display: flex; align-items: center; justify-content: center; gap: 8px; }
.support-follow svg { width: 18px; height: 18px; }
.support-note { display: block; margin-top: 11px; color: var(--faint); text-align: center; font-size: 10px; }

/* Empty/error results */
.result-message { height: 100%; display: grid; place-items: center; padding: 30px; text-align: center; position: relative; z-index: 2; }
.result-message div { max-width: 430px; }
.result-message i { width: 54px; height: 54px; margin: 0 auto 18px; display: grid; place-items: center; border-radius: 18px; background: var(--accent-soft); color: var(--accent); font-style: normal; font-size: 23px; }
.result-message h2 { margin: 0; font-size: 22px; }
.result-message p { color: var(--muted); font-size: 13px; }
.empty-contribute { margin-top: 9px; border: 0; border-radius: 11px; padding: 10px 14px; background: var(--ink); color: #fff; font-size: 12px; font-weight: 700; cursor: pointer; transition: transform .25s var(--spring), background .2s; }
.empty-contribute:hover { transform: translateY(-1px); background: var(--accent); }

footer { min-height: 56px; padding: 0 clamp(22px,4vw,64px) 22px; display: flex; justify-content: center; align-items: center; color: var(--faint); font-size: 10px; }
.live-dot { display: inline-block; width: 6px; height: 6px; margin-right: 6px; border-radius: 50%; background: var(--good); box-shadow: 0 0 0 3px rgba(46,164,123,.1); }

@keyframes rise-in { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: none; } }
@keyframes workspace-in { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
@keyframes suggestion-in { to { opacity: 1; transform: none; } }
@keyframes fade-in { from { opacity: 0; } }
@keyframes drawer-in { from { opacity: 0; transform: translateX(45px) scale(.985); } to { opacity: 1; transform: none; } }
@keyframes modal-in { from { opacity: 0; transform: translateY(14px) scale(.97); } to { opacity: 1; transform: none; } }
@keyframes float-in { from { opacity: 0; transform: translate(-50%,16px) scale(.97); } to { opacity: 1; transform: translate(-50%,0) scale(1); } }
@keyframes hover-in { from { opacity: 0; transform: translateY(5px) scale(.97); } }
@keyframes toast-in { from { opacity: 0; transform: translate(-50%,10px) scale(.95); } }
@keyframes notice-in { from { opacity: 0; transform: translateY(12px) scale(.97); } }
@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes query-dot { 0%,100% { transform:translateY(0); opacity:.35; } 50% { transform:translateY(-4px); opacity:1; } }
@keyframes query-pulse { 0%,100% { transform:scale(.72); opacity:.3; } 50% { transform:scale(1); opacity:1; } }
/* The texture repeats every 240px and moves 576000px per hour (160px/s).
   Its visible pattern loops every 1.5s without restarting the CSS animation,
   avoiding the compositor-layer rewind seen in some mobile WebViews. */
@keyframes meter-glint {
  from { background-position: -576000px 0; }
  to { background-position: 0 0; }
}
@keyframes draw-line { from { stroke-dasharray: 12 8; stroke-dashoffset: 80; opacity: 0; } to { stroke-dashoffset: 0; opacity: 1; } }
/* Never animate CSS transform on an SVG node group: it would override the
   group's positioning transform attribute and collapse every node at 0,0. */
@keyframes node-pop { from { opacity: 0; } to { opacity: 1; } }
@keyframes shimmer { to { background-position: -200% 0; } }

@media (max-width: 800px) {
  .site-header { height: 66px; padding: 0 18px; }
  .quiet-button span { display: none; }
  .header-actions { gap: 8px; }
  .hero { padding: 58px 15px 62px; min-height: calc(100vh - 110px); }
  .search-card { margin-top: 34px; grid-template-columns: minmax(0,1fr) 38px minmax(0,1fr); padding: 10px; }
  .search-button { grid-column: 1 / -1; margin-top: 2px; }
  .route-title { flex-wrap: wrap; }
  .result-heading { align-items: start; }
  .result-summary { flex: none; }
  .map-card { height: calc(100vh - 260px); min-height: 430px; }
}

@media (max-width: 560px) {
  .brand span:last-child { display: none; }
  .hero-copy { padding: 0 6px; }
  h1 { font-size: clamp(36px, 10.2vw, 42px); line-height: 1.12; letter-spacing: -.045em; }
  h1 span { display: block; }
  .search-card { display: flex; flex-direction: column; gap: 8px; border-radius: 18px; }
  .picker { width: 100%; }
  .swap-button { height: 32px; align-self: center; transform: rotate(90deg); }
  .swap-button:hover { transform: rotate(270deg); }
  .search-button { width: 100%; }
  .examples span, .examples button:nth-of-type(n+3) { display: none; }
  .result-workspace { padding: 12px 10px 40px; }
  .result-heading { margin: 0 5px 12px; }
  .result-summary strong { font-size: 22px; }
  .result-summary span { display: none; }
  .route-title { font-size: 20px; gap: 7px; }
  .path-switcher { margin-left: 4px; }
  .map-card { height: calc(100vh - 220px); min-height: 440px; border-radius: 18px; }
  .map-note { display: none; }
  .map-toolbar { justify-content: flex-end; }
  .map-loading { padding: 14px; }
  .query-flow { gap: 14px; }
  .query-stages li { gap: 5px; font-size: 9px; }
  .query-state-card { min-height: 74px; gap: 12px; padding: 14px; }
  .query-state-mark { width: 42px; height: 42px; border-radius: 13px; }
  .query-state-card strong { font-size: 15px; }
  .query-queue { padding: 12px; }
  .query-counts > div { padding: 10px; }
  .drawer { padding: 25px 20px; }
  .drawer-close { right: 12px; top: 12px; }
  .about-grid { grid-template-columns: 1fr; }
  .about-links { grid-template-columns: 1fr; }
  .support-overlay { padding: 10px; align-items: center; }
  .support-modal { padding: 32px 22px 25px; border-radius: 19px; }
  .support-orbit { margin-bottom: 20px; transform: scale(.88); transform-origin: left center; }
  .support-modal h2 { padding-right: 8px; font-size: 27px; }
  .support-lead { margin-top: 13px !important; font-size: 13px; }
  .support-reasons { grid-template-columns: 1fr; margin-top: 20px; gap: 8px; }
  .support-reasons > div { padding: 12px 13px; }
  .support-follow { margin-top: 16px; }
  .job-notice{right:14px;bottom:14px;grid-template-columns:minmax(0,1fr) auto}.job-notice-cancel{grid-column:2}.history-modal{max-height:calc(100vh - 20px);max-height:calc(100dvh - 20px);padding:26px 14px 18px 18px}.history-list{margin-top:15px;padding-right:4px}
}

/* Chromium WebView can retain old non-scaling SVG strokes while a touch
   transform is changing. Mobile uses ordinary strokes and no SVG filters so
   every pinch frame can be invalidated as one clean paint. */
@media (hover: none), (pointer: coarse) {
  .relation-line, .edge-label-bg, .map-node-card { vector-effect: none; }
  .map-node-card, .map-node:hover .map-node-card, .map-node:focus .map-node-card { filter: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}