/* Night archive: stone paper, night-blue ink, vermilion and teal accents; grotesk headlines, serif reading text. */
:root {
  --paper: #f1eee6;
  --wash: #e7e1d4;
  --ink: #16181d;
  --muted: #5f5b54;
  --line: #cdc5b6;
  --night: #1e2b47;
  --vermilion: #b33a27;
  --teal: #2b6659;
  --vermilion-tint: #f0dcd2;
  --sans: 'Space Grotesk', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans SC', system-ui, sans-serif;
  --serif: 'Source Serif 4', 'Noto Serif SC', 'Songti SC', Georgia, serif;
  --rule: 1px solid var(--line);
  --radius: 6px;
}
* { box-sizing: border-box; }
html { scroll-padding-top: 16px; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 15px/1.6 var(--sans); -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, ol, ul { margin: 0; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--vermilion); outline-offset: 3px; }
.skip { position: absolute; left: -999px; top: 8px; background: var(--night); color: var(--paper); padding: 8px 12px; z-index: 10; }
.skip:focus { left: 16px; }
.wrap { width: min(1220px, calc(100% - 64px)); margin-inline: auto; }
.micro { font-size: 12px; color: var(--muted); line-height: 1.7; }

/* Header */
.site-header { border-bottom: 1px solid var(--ink); }
.header-top { padding: 18px 32px 6px; }
.logo { display: inline-flex; align-items: center; gap: 12px; }
.logo-text { display: flex; gap: .2em; font: 700 19px/1.2 var(--sans); letter-spacing: -.01em; }
.header-bar { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 6px 32px 14px; font-size: 14px; }
.bar-left { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.bar-left > span { display: none; }
.bar-left a { padding: 4px 0; border-bottom: 2px solid transparent; }
.bar-left a[aria-current="page"] { border-bottom-color: var(--vermilion); }
.bar-left a:hover, .text-button:hover { color: var(--vermilion); }
.bar-right { display: flex; align-items: center; gap: 10px; }
.lang-picker { position: relative; display: flex; align-items: center; border: 1px solid var(--ink); border-radius: 999px; padding: 5px 14px; font-size: 13px; cursor: pointer; }
.lang-label::after { content: ' ▾'; }
.lang-picker:hover { background: var(--wash); }
.lang-picker:focus-within { outline: 2px solid var(--vermilion); outline-offset: 2px; }
.lang-picker select { position: absolute; inset: 0; width: 100%; opacity: 0; cursor: pointer; border: 0; }
.bar-cta { background: var(--night); color: var(--paper); padding: 6px 16px; border-radius: 999px; font-size: 13px; }
.bar-cta:hover { background: var(--vermilion); }

/* Chips and buttons */
.chip-row { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.chip { display: inline-flex; align-items: center; border: 1px solid currentColor; border-radius: 999px; padding: 1px 11px; font: 500 12px/1.6 var(--sans); letter-spacing: .02em; }
.chip.solid { background: var(--night); border-color: var(--night); color: var(--paper); }
button.chip, a.chip { background: transparent; }
button.chip:hover, a.chip:hover { background: var(--wash); }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; border: 1px solid var(--ink); border-radius: 999px; background: transparent; padding: 9px 18px; font: 500 13px/1.4 var(--sans); }
.btn:hover { background: var(--wash); }
.btn.solid { background: var(--night); border-color: var(--night); color: var(--paper); }
.btn.solid:hover { background: var(--vermilion); border-color: var(--vermilion); }
.text-button { background: none; border: 0; padding: 4px 0; font: 500 13px var(--sans); }
.section-title { font: 700 12px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); border-bottom: var(--rule); padding-bottom: 8px; margin-bottom: 18px; }

/* Spotlight: text block beside or below an illustration */
.spotlight { display: grid; border-radius: var(--radius); overflow: hidden; }
.spotlight .art svg { display: block; width: 100%; height: 100%; }
.spotlight-card { padding: 26px 28px 22px; }
.tone-hero { background: transparent; padding-left: 0; }
.tone-steady { background: var(--night); color: var(--paper); }
.tone-extinct { background: var(--vermilion); color: var(--paper); }
.tone-changing { background: var(--teal); color: var(--paper); }
.tone-neutral { background: var(--wash); }
.card-kicker { font: 500 13px var(--sans); margin-bottom: 10px; opacity: .85; }
.card-title { font: 700 clamp(28px, 3vw, 40px)/1.15 var(--sans); letter-spacing: -.02em; margin-bottom: 16px; }
.card-row { border-top: 1px solid color-mix(in srgb, currentColor 30%, transparent); padding: 10px 0; font-size: 13px; }
.card-dek { font: 400 18px/1.55 var(--serif); }
.card-ask { font: italic 400 17px/1.5 var(--serif); }
.card-link { display: block; font-weight: 500; }
a.spotlight:hover .card-link, .card-link:hover { text-decoration: underline; text-underline-offset: 4px; }
.hero { grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); gap: 48px; align-items: center; margin-top: 48px; overflow: visible; border-radius: 0; }
.hero-art { order: 2; min-height: 460px; border-radius: var(--radius); overflow: hidden; }
.hero-art .art { height: 100%; }
.hero .card-title { font-size: clamp(36px, 4.4vw, 60px); line-height: 1.08; }
.hero .card-kicker { color: var(--vermilion); opacity: 1; }
.vision-lead { font: 400 18px/1.6 var(--serif); }
.vision-lead .chip { margin-right: 10px; vertical-align: 2px; }
.vision-points { list-style: none; padding: 0; margin: 10px 0 2px; display: grid; gap: 4px; }
.vision-points li { position: relative; padding-left: 18px; font-size: 14px; }
.vision-points li::before { content: ''; position: absolute; left: 0; top: .62em; width: 8px; height: 8px; border-radius: 50%; background: var(--teal); }

/* Home: branch sections */
.issue-bar { margin-top: 72px; border-top: 1px solid var(--ink); font-size: 14px; }
.issue-bar .wrap { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; padding: 12px 0; }
.issue-bar .wrap > span[aria-hidden] { color: var(--line); }
.branch { padding: 36px 0 8px; }
.branch + .branch { border-top: var(--rule); }
.branch-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 28px; align-items: start; }
.tile .art { aspect-ratio: 600 / 360; }
.tile .card-title { font-size: 34px; }
.cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card { display: flex; flex-direction: column; border: var(--rule); border-top: 3px solid var(--tone, var(--night)); border-radius: var(--radius); background: #f7f5ef; min-height: 220px; transition: border-color .15s; }
.card:hover { border-color: var(--ink); border-top-color: var(--tone, var(--night)); }
.card:hover .card-read { color: var(--vermilion); }
.card-heading { font: 700 22px/1.25 var(--sans); letter-spacing: -.01em; padding: 16px 18px 2px; }
.card-by { font-size: 12px; color: var(--muted); padding: 0 18px 12px; }
.card-by b { font-weight: 500; color: var(--ink); }
.card-text { flex: 1; margin: 0 18px; font: 400 15px/1.6 var(--serif); }
.card-kids { font-size: 12px; color: var(--muted); padding: 10px 18px 0; }
.card-read { font-size: 12px; font-weight: 500; padding: 12px 18px 4px; }
.card-tag { font-size: 11px; letter-spacing: .06em; color: var(--muted); padding: 0 18px 12px; }
.branch:nth-child(1) .card { --tone: var(--night); }
.branch:nth-child(2) .card { --tone: var(--vermilion); }
.branch:nth-child(3) .card { --tone: var(--teal); }
.how { display: grid; grid-template-columns: 1fr 2fr; gap: 32px; padding: 64px 0; border-top: 1px solid var(--ink); margin-top: 56px; }
.how-title { font: 700 34px/1.2 var(--sans); letter-spacing: -.02em; }
.how-steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.how-steps li { border-top: 3px solid var(--night); padding-top: 14px; }
.how-steps li:nth-child(2) { border-top-color: var(--vermilion); }
.how-steps li:nth-child(3) { border-top-color: var(--teal); }
.how-steps h3 { font: 700 20px/1.3 var(--sans); margin: 12px 0 8px; }
.how-steps p { font: 400 15px/1.6 var(--serif); }
.editor-note { grid-column: 1 / -1; font-size: 13px; color: var(--muted); display: flex; gap: 14px; align-items: baseline; border-top: var(--rule); padding-top: 16px; }

/* Pages */
.page-head { padding: 44px 0 28px; border-bottom: var(--rule); margin-bottom: 32px; }
.page-head h1, .node-head h1, .question h1, .result-head h1, .rules-title h1 { font: 700 clamp(34px, 4.4vw, 56px)/1.1 var(--sans); letter-spacing: -.025em; }
.page-dek { font: 400 19px/1.55 var(--serif); max-width: 720px; margin-top: 14px; }
.tree-panel { border: var(--rule); border-radius: var(--radius); padding: 28px 32px; background: #f7f5ef; }
.tree-cta { margin: 28px 0 64px; }

/* Tree */
.tree ul { list-style: none; margin: 0; padding: 0; }
.tree-root ul { padding-left: 12px; }
.tree-root ul > li { position: relative; padding: 5px 0 5px 22px; }
.tree-root ul > li::before { content: ''; position: absolute; left: 0; top: 0; height: 19px; width: 16px; border-left: 1px solid #a9a090; border-bottom: 1px solid #a9a090; }
.tree-root ul > li::after { content: ''; position: absolute; left: 0; top: 19px; bottom: 0; border-left: 1px solid #a9a090; }
.tree-root ul > li:last-child::after { display: none; }
.tree-node { display: inline-block; border: 1px solid #a9a090; border-radius: 4px; padding: 2px 10px; font: 500 14px/1.5 var(--sans); background: #f7f5ef; }
a.tree-node:hover { border-color: var(--ink); background: var(--wash); }
.tree-root > li > .tree-node { background: var(--ink); border-color: var(--ink); color: var(--paper); }
.tree-node.is-chosen { background: var(--night); border-color: var(--night); color: var(--paper); }
.tree-node.is-open { background: #f7f5ef; }
.tree-node.is-dim { color: #aaa293; border-color: #ddd6c9; background: transparent; }
.tree-node.is-proposal { border: 1px dashed var(--vermilion); background: var(--vermilion-tint); }
.tree-node.is-community { border: 1px dotted var(--teal); color: var(--teal); background: transparent; }
.tree-by { font-size: 12px; color: var(--muted); margin-left: 8px; }
.node-by { font-size: 13px; color: var(--muted); margin-top: 10px; }
.community-path { border-top: var(--rule); padding: 12px 0; }
.community-path h3 { font: 700 18px/1.3 var(--sans); }
.community-note { font: 400 16px/1.6 var(--serif); margin-top: 6px; }
.tree-node.is-focus { background: var(--vermilion); border-color: var(--vermilion); color: var(--paper); }
.tree-quote { font: italic 400 15px var(--serif); margin-left: 10px; color: var(--teal); }
.tree-note { font-size: 12px; color: var(--muted); }
.tree-note.is-dim { color: #bdb5a8; }
.tree.compact .tree-node { font-size: 13px; padding: 1px 8px; }
.tree.compact .tree-root ul { padding-left: 8px; }
.tree.compact .tree-root ul > li { padding: 3px 0 3px 16px; }
.tree.compact .tree-root ul > li::before { height: 15px; width: 11px; }
.tree.compact .tree-root ul > li::after { top: 15px; }
.tree-legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 12px; margin-top: 16px; }
.tree-legend span { display: inline-flex; align-items: center; gap: 6px; }
.tree-legend i { width: 18px; height: 12px; padding: 0; }

/* Journey */
.journey { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 48px; padding: 44px 0 72px; }
.question h1 { margin-bottom: 14px; }
.question-help { font: 400 19px/1.55 var(--serif); max-width: 640px; color: var(--muted); }
.options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 28px; }
.option { position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 8px; text-align: left; border: 1px solid var(--ink); border-radius: var(--radius); background: #f7f5ef; padding: 20px 46px 20px 20px; min-height: 96px; transition: background .15s, color .15s; }
.option:hover { background: var(--night); border-color: var(--night); color: var(--paper); }
.option-label { font: 700 23px/1.2 var(--sans); letter-spacing: -.01em; }
.option-hint { font-size: 12px; border: 1px solid currentColor; border-radius: 999px; padding: 0 9px; opacity: .8; }
.option-arrow { position: absolute; right: 18px; top: 20px; font-size: 18px; }
.other-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.question > .micro { margin-top: 10px; }
.step-nav { display: flex; gap: 22px; margin-top: 28px; border-top: var(--rule); padding-top: 12px; }
.proposal { border: 1px solid var(--ink); border-radius: var(--radius); background: #f7f5ef; padding: 20px; margin-top: 20px; display: grid; gap: 14px; max-width: 640px; }
.proposal h2 { font: 700 21px/1.3 var(--sans); }
.proposal label { display: grid; gap: 6px; font-size: 13px; }
.proposal input, .proposal textarea { border: 1px solid #a9a090; background: var(--paper); padding: 10px 12px; border-radius: 4px; font: 400 16px/1.5 var(--serif); width: 100%; }
.form-error { color: var(--vermilion); font-size: 13px; min-height: 1em; }
.form-error:empty { display: none; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.journey-side { border-left: var(--rule); padding-left: 32px; align-self: start; position: sticky; top: 16px; }
.side-title { font: 700 12px var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; }
.trail { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-bottom: 18px; font-size: 12px; }
.trail-label { margin-right: 4px; color: var(--muted); }
.trail-empty { color: var(--muted); }
.trail-arrow { color: var(--muted); }

/* Result */
.result { padding: 44px 0 72px; }
.result-head { margin-bottom: 28px; }
.result-spotlight { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); min-height: 380px; }
.result-spotlight .art { order: 2; }
.result-grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 48px; margin-top: 48px; }
.answers { margin-bottom: 32px; }
.answer-row { display: grid; grid-template-columns: 1fr auto; gap: 2px 16px; border-bottom: var(--rule); padding: 10px 0; }
.answer-q { grid-column: 1 / -1; font-size: 12px; color: var(--muted); }
.answer-a { font: 700 18px/1.3 var(--sans); }
.community { border: var(--rule); border-radius: var(--radius); background: #f7f5ef; padding: 16px; margin-bottom: 20px; }
.community .section-title { border-bottom: 0; margin-bottom: 6px; }
.community-empty { font: 400 17px var(--serif); margin-bottom: 6px; }
.result-side > .micro { margin-top: 12px; }
.submit { border: var(--rule); border-radius: var(--radius); background: #f7f5ef; padding: 16px; margin-bottom: 20px; }
.submit .section-title { border-bottom: 0; margin-bottom: 6px; }
.contact { display: grid; gap: 12px; margin-top: 12px; }
.contact label { display: grid; gap: 6px; font-size: 13px; }
.contact input { border: 1px solid #a9a090; background: var(--paper); padding: 9px 12px; border-radius: 4px; font: 400 15px var(--sans); width: 100%; }
.contact .btn { justify-self: start; }
.submit-status { font-size: 13px; color: var(--teal); }
.submit-status:empty { display: none; }
.count-row { display: grid; grid-template-columns: 1fr auto; gap: 2px 12px; padding: 6px 0; font-size: 13px; }
.count-bar { grid-column: 1 / -1; height: 6px; border-radius: 3px; background: linear-gradient(90deg, var(--night) var(--share), var(--wash) var(--share)); }

/* Node page */
.node-head { padding: 36px 0 28px; border-bottom: var(--rule); }
.crumbs { display: flex; flex-wrap: wrap; gap: 8px; font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.crumbs a:hover { color: var(--vermilion); }
.crumb-here { color: var(--ink); }
.node-summary { font: 400 clamp(19px, 2vw, 24px)/1.55 var(--serif); max-width: 820px; margin-top: 16px; }
.node-body { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr); gap: 48px; padding: 32px 0 24px; }
.node-main > section { margin-bottom: 36px; }
.ask p { font: italic 400 24px/1.45 var(--serif); border-left: 3px solid var(--vermilion); padding-left: 18px; }
.note { font-size: 13px; border: 1px dashed var(--muted); border-radius: 4px; padding: 8px 12px; margin-bottom: 32px; display: inline-block; }
.in-flow p { font: 400 17px/1.6 var(--serif); margin-bottom: 16px; }
.node-aside { border-left: var(--rule); padding-left: 28px; align-self: start; }
.node-siblings { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; border-top: var(--rule); padding: 14px 0 64px; font-size: 13px; }

/* Rules */
.rules { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 48px; padding: 44px 0 72px; }
.rules-title { align-self: start; position: sticky; top: 16px; }
.rules-title p { margin-top: 14px; font-size: 13px; color: var(--muted); }
.rules-body section { border-top: var(--rule); padding: 18px 0 32px; }
.rules-body h2 { font: 700 26px/1.25 var(--sans); letter-spacing: -.015em; margin: 14px 0 12px; }
.rules-body p { font: 400 17px/1.65 var(--serif); margin-bottom: 12px; }
.rules-body .micro { font: 400 12px/1.7 var(--sans); }
.three-questions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 6px 0 16px; }
.three-questions p { border: var(--rule); border-radius: var(--radius); background: #f7f5ef; padding: 12px; font-size: 15px; display: grid; gap: 4px; margin: 0; }
.three-questions b { font-family: var(--sans); }
.governance-flow { list-style: none; padding: 0; margin: 4px 0 14px; counter-reset: step; }
.governance-flow li { display: grid; gap: 2px; border-bottom: var(--rule); padding: 10px 0 10px 36px; position: relative; counter-increment: step; }
.governance-flow li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 11px; font: 700 12px var(--sans); color: var(--vermilion); }
.governance-flow b { font: 700 16px var(--sans); }
.governance-flow span { font: 400 15px/1.6 var(--serif); }

/* First-visit question popup */
.intro { width: min(720px, calc(100% - 32px)); max-height: calc(100dvh - 32px); overflow: hidden auto; border: 0; border-radius: 10px; border-top: 4px solid var(--vermilion); background: var(--paper); color: var(--ink); padding: 30px 30px 22px; box-shadow: 0 24px 60px rgba(14, 20, 34, .35); }
.intro::backdrop { background: rgba(14, 20, 34, .55); }
.intro-question { font: 700 clamp(28px, 4vw, 42px)/1.12 var(--sans); letter-spacing: -.02em; margin-bottom: 12px; }
.intro-later { display: block; margin-top: 18px; color: var(--muted); }
.intro-lang { display: flex; justify-content: flex-end; gap: 6px; margin-bottom: 6px; }

/* Footer and toast */
.site-footer { border-top: 1px solid var(--ink); padding: 24px 0 40px; font-size: 13px; }
.footer-inner { display: flex; justify-content: space-between; align-items: center; gap: 24px; flex-wrap: wrap; }
.footer-inner .logo-text { font-size: 16px; }
.footer-inner p { font: italic 400 16px var(--serif); color: var(--muted); }
.footer-inner > a:last-child:hover { color: var(--vermilion); }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--night); color: var(--paper); border-radius: 999px; padding: 10px 18px; font-size: 13px; z-index: 20; max-width: calc(100% - 32px); }

/* Narrow screens */
@media (max-width: 960px) {
  .branch-grid, .journey, .result-grid, .node-body, .rules, .how, .hero { grid-template-columns: minmax(0, 1fr); }
  .journey-side, .node-aside { border-left: 0; border-top: var(--rule); padding: 20px 0 0; position: static; }
  .rules-title { position: static; }
  .how-steps { grid-template-columns: minmax(0, 1fr); }
  .hero { gap: 24px; }
  .hero-art { min-height: 300px; }
}
@media (max-width: 680px) {
  .wrap { width: calc(100% - 32px); }
  .header-top { padding: 14px 16px 4px; }
  .header-bar { padding: 6px 16px 12px; flex-wrap: wrap; }
  .intro { padding: 22px 18px 16px; }
  .hero { margin-top: 24px; }
  .hero-art { min-height: 220px; }
  .result-spotlight { grid-template-columns: minmax(0, 1fr); min-height: 0; }
  .result-spotlight .art { height: 180px; }
  .cards, .options, .three-questions { grid-template-columns: minmax(0, 1fr); }
  .card { min-height: 0; }
  .tree-panel { padding: 18px 12px; overflow-x: auto; }
  .tree-root ul { padding-left: 6px; }
  .tree-root ul > li { padding-left: 14px; }
  .tree-root ul > li::before { width: 10px; }
  .editor-note { flex-direction: column; gap: 8px; }
}