/* China Land Redevelopment Case Library — research-dossier styling */
:root {
  --paper: #f6f4ef;
  --card: #fffdf9;
  --ink: #1d1c1a;
  --ink-2: #4a4843;
  --ink-3: #77746c;
  --rule: #e2ddd2;
  --rule-2: #cfc8b9;
  --accent: #9c3b23;
  --accent-soft: #f3e3dc;
  --ch1: #b4442c; --ch2: #2f6f8f; --ch3: #8a7424; --ch4: #6b4a8a; --ch5: #2f7a55; --ch6: #8a3d5a;
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans: "IBM Plex Sans", -apple-system, "Segoe UI", Roboto, "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, Menlo, Consolas, monospace;
  --cn: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 16px/1.6 var(--sans); }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }
img { max-width: 100%; }
[lang="zh-Hans"] { font-family: var(--cn); }

.wrap { max-width: 1160px; margin: 0 auto; padding: 0 16px; }
.wrap.narrow { max-width: 760px; padding-top: 40px; padding-bottom: 60px; }
@media (min-width: 720px) { .wrap { padding: 0 28px; } }

/* Header */
.site-header { border-bottom: 1px solid var(--rule); background: var(--paper); position: sticky; top: 0; z-index: 1000; }
.header-row { display: flex; align-items: center; gap: 10px; min-height: 56px; flex-wrap: wrap; }
.brand { font: 700 18px/1 var(--serif); color: var(--ink); letter-spacing: -0.01em; }
.brand-sep { color: var(--rule-2); }
.brand-sub { font-size: 14px; color: var(--ink-2); }
.header-nav { margin-left: auto; display: flex; gap: 18px; font-size: 14px; }
.header-nav a { color: var(--ink-2); }
@media (max-width: 680px) { .brand-sub, .brand-sep { display: none; } .header-row { gap: 8px; } .header-nav { gap: 11px; font-size: 12px; } }
@media (max-width: 390px) { .brand { font-size: 16px; } .header-nav { gap: 8px; font-size: 11px; } }

/* Shared type */
.eyebrow { font: 500 12px/1.4 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.page-title { font: 700 clamp(32px, 5vw, 44px)/1.1 var(--serif); margin: 0 0 16px; letter-spacing: -0.015em; }
.page-lead { font: 400 19px/1.55 var(--serif); color: var(--ink-2); margin: 0 0 36px; }
.dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex: none; }
.dot.ch1 { background: var(--ch1); } .dot.ch2 { background: var(--ch2); } .dot.ch3 { background: var(--ch3); }
.dot.ch4 { background: var(--ch4); } .dot.ch5 { background: var(--ch5); } .dot.ch6 { background: var(--ch6); }

/* Hero */
.hero { padding: 56px 0 32px; }
.hero-title { font: 700 clamp(34px, 6vw, 60px)/1.04 var(--serif); letter-spacing: -0.02em; margin: 0 0 20px; max-width: 16ch; }
.hero-lead { font: 400 clamp(17px, 2vw, 20px)/1.55 var(--serif); color: var(--ink-2); max-width: 62ch; margin: 0 0 32px; }
.stats { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0; margin: 0; border-top: 2px solid var(--ink); max-width: 760px; }
.stats > div { padding: 14px 16px 6px 0; border-bottom: 1px solid var(--rule); }
.stats dt { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.stats dd { margin: 2px 0 0; font: 500 32px/1.1 var(--mono); }
.stats dd small { font-size: 15px; color: var(--ink-3); }
@media (min-width: 720px) { .stats { grid-template-columns: repeat(4, minmax(0, 1fr)); } }

/* Map */
.map-section { margin-bottom: 36px; }
.map-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 420px); gap: 32px; align-items: end; margin-bottom: 14px; }
.map-head .eyebrow { margin-bottom: 5px; }
.map-head h2 { font: 700 clamp(22px, 3vw, 30px)/1.2 var(--serif); margin: 0; }
.map-head > p { margin: 0; color: var(--ink-3); font-size: 13px; }
.case-map { position: relative; height: 520px; overflow: hidden; border: 1px solid var(--rule-2); border-radius: 4px; background: #e8e4da; isolation: isolate; }
.case-map.small { height: 250px; margin-top: 24px; }
@media (max-width: 720px) { .map-head { grid-template-columns: 1fr; gap: 8px; } .case-map { height: 340px; } .case-map.small { height: 230px; } }
.map-note { font-size: 13px; color: var(--ink-3); margin: 8px 0 0; }
.boundary-map { display: block; width: 100%; height: 100%; }
.province-boundary { fill: #f5f2e9; stroke: #aaa394; stroke-width: 1.05; vector-effect: non-scaling-stroke; }
.province-boundary:hover { fill: #eee8dc; }
.inset-frame { fill: rgba(255,253,249,.45); stroke: #aaa394; stroke-width: 1; vector-effect: non-scaling-stroke; }
.jurisdiction-boundary { fill: none; stroke: #777064; stroke-width: 1.2; vector-effect: non-scaling-stroke; }
.map-point-link { cursor: pointer; }
.map-point { stroke: #fffdf9; stroke-width: 3; vector-effect: non-scaling-stroke; filter: drop-shadow(0 1px 2px rgba(29,28,26,.42)); transition: r .12s ease; }
.map-point-link:hover .map-point, .map-point-link:focus .map-point { r: 12px; stroke: var(--ink); outline: none; }
.map-status { position: absolute; z-index: 4; left: 14px; bottom: 12px; max-width: min(380px, calc(100% - 28px)); padding: 8px 10px; border-left: 3px solid var(--accent); background: rgba(255,253,249,.94); box-shadow: 0 2px 10px rgba(29,28,26,.1); pointer-events: none; }
.map-status strong, .map-status span { display: block; }
.map-status strong { font: 600 13px/1.35 var(--sans); }
.map-status span { margin-top: 2px; color: var(--ink-3); font-size: 11px; }
.map-status.is-active { background: var(--ink); color: #fff; }
.map-status.is-active span { color: #cec9bf; }
.case-map.small .map-status { max-width: calc(100% - 20px); left: 10px; bottom: 8px; padding: 6px 8px; }
.case-map.small .map-status strong { font-size: 11px; }
.case-map.small .map-status span { font-size: 10px; }
.map-load-error { position: absolute; inset: 0; display: grid; place-items: center; margin: 0; padding: 24px; color: var(--ink-3); text-align: center; }

/* Filters */
.filters { display: grid; grid-template-columns: 1fr; gap: 12px; padding: 16px; background: var(--card); border: 1px solid var(--rule); border-radius: 4px; margin-bottom: 40px; }
.filters label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-3); min-width: 0; }
.filters select { font: 15px var(--sans); color: var(--ink); padding: 9px 10px; border: 1px solid var(--rule-2); border-radius: 3px; background: #fff; width: 100%; text-transform: none; letter-spacing: 0; }
.filter-actions { display: flex; align-items: flex-end; gap: 12px; }
.filters button { font: 600 15px var(--sans); background: var(--ink); color: #fff; border: 0; padding: 10px 20px; border-radius: 3px; cursor: pointer; }
.filters button:hover { background: var(--accent); }
.filters .reset { font-size: 14px; padding-bottom: 10px; }
@media (min-width: 720px) { .filters { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1040px) { .filters { grid-template-columns: repeat(4, minmax(0, 1fr)) auto; } }

/* Chapters and cards */
.chapter { margin-bottom: 56px; }
.chapter-head { border-top: 2px solid var(--ink); padding-top: 16px; margin-bottom: 20px; max-width: 760px; }
.chapter-no { font-size: 12px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin: 0 0 8px; display: flex; align-items: center; gap: 8px; }
.chapter-head h2 { font: 700 clamp(24px, 3vw, 30px)/1.2 var(--serif); margin: 0 0 4px; letter-spacing: -0.01em; }
.chapter-head h2 a { color: var(--ink); }
.chapter-cn { color: var(--ink-3); margin: 0 0 10px; font-size: 15px; }
.chapter-intro { color: var(--ink-2); margin: 0; }
.result-head { border-top: 2px solid var(--ink); padding-top: 16px; margin-bottom: 20px; max-width: 760px; }
.result-head h2 { font: 700 30px/1.2 var(--serif); margin: 0 0 6px; }
.result-head p { margin: 0 0 6px; color: var(--ink-2); }
.result-head .count { font: 14px var(--mono); color: var(--ink-3); }
.empty { color: var(--ink-2); }

.cards { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 720px) { .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (min-width: 1080px) { .cards { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
.card { background: var(--card); border: 1px solid var(--rule); border-radius: 4px; padding: 18px 18px 16px; display: flex; flex-direction: column; min-width: 0; }
.card:hover { border-color: var(--rule-2); box-shadow: 0 1px 0 var(--rule-2); }
.card-meta { font-size: 13px; color: var(--ink-3); margin: 0 0 8px; display: flex; align-items: baseline; gap: 7px; }
.card-meta .dot { position: relative; top: -1px; }
.card-title { font: 600 19px/1.3 var(--serif); margin: 0 0 4px; }
.card-title a { color: var(--ink); }
.card-cn { font-size: 13px; color: var(--ink-3); margin: 0 0 10px; }
.card-sum { font-size: 14.5px; color: var(--ink-2); margin: 0 0 14px; flex: 1; }
.card-metric { margin: 0 0 12px; padding: 10px 0 0; border-top: 1px dashed var(--rule-2); font-size: 13px; }
.card-metric .m-label { display: block; color: var(--ink-3); margin-bottom: 2px; }
.card-metric .m-val { font-family: var(--mono); font-size: 14px; }
.arrow { color: var(--ink-3); }
.m-unit { color: var(--ink-3); font-family: var(--sans); font-size: 12px; }

.chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.chips a { display: inline-block; font-size: 12px; line-height: 1.3; padding: 4px 8px; border-radius: 2px; background: var(--accent-soft); color: var(--accent); }
.chips a:hover { background: var(--accent); color: #fff; text-decoration: none; }
.chips.large a { font-size: 14px; padding: 7px 11px; }
.chips.large a span { font-family: var(--mono); opacity: .7; margin-left: 4px; }
.tool-index { border-top: 2px solid var(--ink); padding-top: 16px; margin: 24px 0 64px; }
.tool-index h2 { font: 700 24px/1.2 var(--serif); margin: 0 0 16px; }

/* Case page */
.case-page { padding-top: 24px; padding-bottom: 64px; }
.crumbs { font-size: 13px; color: var(--ink-3); display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 28px; }
.crumbs a { color: var(--ink-2); }
.case-head { max-width: 860px; margin-bottom: 36px; }
.case-title { font: 700 clamp(30px, 4.6vw, 48px)/1.1 var(--serif); letter-spacing: -0.018em; margin: 0 0 10px; }
.case-cn { font-size: 17px; color: var(--ink-3); margin: 0 0 20px; }
.case-sum { font: 400 clamp(18px, 2vw, 21px)/1.55 var(--serif); color: var(--ink-2); margin: 0; padding-left: 16px; border-left: 3px solid var(--accent); }

.case-grid { display: grid; grid-template-columns: 1fr; gap: 40px; }
@media (min-width: 980px) {
  .case-grid { grid-template-columns: 320px minmax(0, 1fr); gap: 56px; align-items: start; }
  .facts { position: sticky; top: 76px; max-height: calc(100vh - 92px); overflow: auto; padding-right: 4px; }
}
.facts { min-width: 0; }
.fact-list { margin: 0 0 8px; border-top: 2px solid var(--ink); }
.fact-list > div { padding: 10px 0; border-bottom: 1px solid var(--rule); }
.fact-list dt { font-size: 11px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.fact-list dd { margin: 2px 0 0; font-size: 14.5px; }
.src-note { display: block; font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.side-h { font: 600 11px/1.4 var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin: 22px 0 8px; }
.metrics { list-style: none; margin: 0; padding: 0; }
.metrics li { padding: 9px 0; border-bottom: 1px solid var(--rule); }
.metrics .m-label { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 2px; }
.metrics .m-val { font-family: var(--mono); font-size: 15px; }
.metrics .m-before { color: var(--ink-3); }
.metrics strong { font-weight: 500; color: var(--ink); }

.case-body { min-width: 0; max-width: 720px; }
.toc { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13.5px; padding: 0 0 18px; margin-bottom: 8px; border-bottom: 1px solid var(--rule); }
.toc a { color: var(--ink-2); }
.prose { font: 400 18px/1.7 var(--serif); }
.prose h2 { font: 700 24px/1.25 var(--serif); margin: 44px 0 14px; letter-spacing: -0.01em; scroll-margin-top: 80px; }
.prose h2:first-child { margin-top: 28px; }
.prose h3 { font: 600 18px/1.35 var(--sans); margin: 30px 0 10px; color: var(--ink); }
.prose p { margin: 0 0 18px; }
.prose em { font-style: italic; }
.translation-note { margin: 40px 0 16px; padding: 16px 18px; background: var(--card); border: 1px solid var(--rule); border-radius: 4px; font-size: 14px; color: var(--ink-2); }
.translation-note p { margin: 0; }
details.original { border: 1px solid var(--rule); border-radius: 4px; background: var(--card); margin-bottom: 40px; }
details.original summary { cursor: pointer; padding: 14px 18px; font-size: 14.5px; font-weight: 500; }
.original-text { padding: 0 18px 12px; font-size: 15.5px; line-height: 1.85; color: var(--ink-2); }
.original-text h2 { font-size: 18px; margin: 4px 0 12px; color: var(--ink); }
.original-text p { margin: 0 0 12px; }
.related { border-top: 2px solid var(--ink); padding-top: 14px; margin-bottom: 32px; }
.related h2 { font: 700 20px/1.3 var(--serif); margin: 0 0 10px; }
.related ul { margin: 0; padding-left: 18px; }
.related li { margin-bottom: 6px; }
.pager { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; border-top: 1px solid var(--rule); padding-top: 16px; }
.pager a { font: 600 15px/1.35 var(--serif); color: var(--ink); }
.pager a span { display: block; font: 12px var(--sans); text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); margin-bottom: 4px; }
.pager .next { text-align: right; }

/* Glossary */
.glossary { margin: 0; border-top: 2px solid var(--ink); }
.term { padding: 18px 0; border-bottom: 1px solid var(--rule); scroll-margin-top: 80px; }
.term dt { font: 600 19px/1.35 var(--serif); }
.term-cn { font-weight: 400; color: var(--ink-2); margin-left: 6px; font-size: 16px; }
.pinyin { font: italic 400 14px var(--serif); color: var(--ink-3); margin-left: 4px; }
.term dd { margin: 6px 0 0; color: var(--ink-2); }
.term .note { display: block; margin-top: 6px; font-size: 14px; color: var(--ink-3); }

/* Footer */
.site-footer { border-top: 1px solid var(--rule); padding: 32px 0 48px; font-size: 13.5px; color: var(--ink-3); background: #efece5; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 820px) { .footer-grid { grid-template-columns: 2fr 1fr; gap: 48px; } }
.footer-title { font-weight: 600; color: var(--ink-2); margin: 0 0 6px; }
.site-footer p { margin: 0 0 8px; }