/* ==========================================================================
   CEA 中欧档案 — 共享样式
   设计方向：研究档案 / 编辑排版，非通用仪表盘
   ========================================================================== */

:root {
  --paper: oklch(1 0 0);
  --paper-rgb: 255, 255, 255;
  --surface: oklch(1 0 0);
  --surface-2: oklch(0.956 0.006 246);
  --ink: oklch(0.285 0.008 260);
  --ink-rgb: 39, 41, 46;
  --muted: oklch(0.52 0.015 258);
  --faint: oklch(0.62 0.012 258);
  --line: oklch(0.90 0.006 245);
  --line-strong: oklch(0.78 0.01 250);
  --accent: oklch(0.60 0.13 252);
  --accent-strong: oklch(0.46 0.15 257);
  --accent-soft: oklch(0.94 0.02 252);
  --eu: oklch(0.55 0.115 252);
  --eu-soft: oklch(0.93 0.025 252);
  --cn: oklch(0.44 0.018 262);
  --cn-soft: oklch(0.93 0.008 262);
  --header-h: 72px;
  --ease: cubic-bezier(.23, .34, .18, 1);

  --serif: "Iowan Old Style", "Palatino Linotype", "Noto Serif SC", "Songti SC", "STSong", serif;
  --sans: "Aptos", "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", "Roboto Mono", "Noto Sans Mono CJK SC", monospace;

  --radius: 2px;
  --pad-page: clamp(16px, 4vw, 56px);
  --content-max: 1320px;
}

html.dark {
  --paper: oklch(0.235 0.008 260);
  --paper-rgb: 40, 42, 47;
  --surface: oklch(0.26 0.008 260);
  --surface-2: oklch(0.31 0.01 260);
  --ink: oklch(0.95 0.005 250);
  --ink-rgb: 242, 243, 245;
  --muted: oklch(0.76 0.012 258);
  --faint: oklch(0.60 0.012 258);
  --line: oklch(0.38 0.01 260);
  --line-strong: oklch(0.48 0.012 260);
  --accent: oklch(0.74 0.12 252);
  --accent-strong: oklch(0.80 0.11 252);
  --accent-soft: oklch(0.36 0.04 258);
  --eu: oklch(0.72 0.12 252);
  --eu-soft: oklch(0.36 0.05 255);
  --cn: oklch(0.80 0.012 260);
  --cn-soft: oklch(0.36 0.03 260);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; overflow-x: clip; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.65;
  overflow-x: clip;
}
h1, h2, h3, h4 { font-family: var(--serif); font-weight: 700; line-height: 1.25; margin: 0; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent-strong); }
html.dark a:hover { color: var(--accent); }
button { font: inherit; color: inherit; background: none; border: none; padding: 0; cursor: pointer; }
input, select { font: inherit; color: inherit; }
img, svg, iframe { display: block; max-width: 100%; }
ul, ol { margin: 0; padding: 0; list-style: none; }
:focus-visible {
  outline: 2px solid var(--accent-strong);
  outline-offset: 2px;
}
html.dark :focus-visible { outline-color: var(--accent); }

::selection { background: var(--accent-soft); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- 跳至主要内容 ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -48px;
  z-index: 200;
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  font-family: var(--mono);
  font-size: 13px;
  border-radius: var(--radius);
  transition: top 180ms var(--ease);
}
.skip-link:focus { top: 12px; color: var(--paper); }

/* ---------- 页头 ---------- */
.site-header {
  height: var(--header-h);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  position: relative;
  z-index: 60;
}
.header-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  height: 100%;
  padding: 0 var(--pad-page);
  display: flex;
  align-items: center;
  gap: clamp(16px, 3vw, 40px);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--ink);
}
.brand-mark { width: 52px; height: 52px; flex-shrink: 0; object-fit: contain; border-radius: 50%; }
html.dark .brand-mark { filter: none; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-name {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.06em;
}
.brand-sub {
  font-size: 12px;
  color: var(--faint);
  letter-spacing: 0.14em;
  font-family: var(--mono);
}
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; align-items: center; gap: clamp(4px, 1.4vw, 22px); }
.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 4px;
  font-size: 14px;
  color: var(--muted);
  position: relative;
  transition: color 180ms var(--ease);
  white-space: nowrap;
}
.nav-link > span { white-space: nowrap; }
.nav-link:hover { color: var(--ink); }
.nav-link[aria-current="page"] { color: var(--ink); font-weight: 600; }
.nav-link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--accent);
}
.header-actions { display: flex; align-items: center; gap: 6px; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px; height: 40px;
  color: var(--muted);
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}
.icon-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.icon-btn svg { width: 20px; height: 20px; }

.menu-btn { display: none; }

/* 移动端全屏菜单 */
.mobile-menu {
  position: fixed;
  top: var(--header-h);
  left: 0; right: 0; bottom: 0;
  background: var(--paper);
  z-index: 55;
  padding: 24px var(--pad-page) 48px;
  display: none;
  flex-direction: column;
  gap: 4px;
  overflow-y: auto;
}
.mobile-menu.open { display: flex; }
.mobile-menu .nav-link {
  font-family: var(--serif);
  font-size: 26px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}
.mobile-menu .nav-link[aria-current="page"]::after { display: none; }
.mobile-menu .nav-link[aria-current="page"] { color: var(--accent-strong); }
html.dark .mobile-menu .nav-link[aria-current="page"] { color: var(--accent); }
.mobile-menu-foot {
  margin-top: auto;
  padding-top: 24px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}
body.menu-open { overflow: hidden; }

/* ---------- 页脚 ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  background: var(--surface);
  margin-top: 0;
}
.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 40px var(--pad-page) 48px;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
}
.footer-brand .brand { margin-bottom: 14px; }
.footer-note { color: var(--muted); font-size: 13px; max-width: 46ch; }
.footer-meta {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  margin-top: 14px;
}
.footer-nav { display: flex; flex-direction: column; gap: 8px; align-items: flex-start; }
.footer-nav .nav-link { font-size: 14px; color: var(--muted); padding: 2px 0; }
.footer-nav .nav-link:hover { color: var(--ink); }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  font-size: 13.5px;
  font-weight: 600;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink);
  transition: border-color 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease);
  min-height: 40px;
}
.btn:hover { border-color: var(--ink); }
.btn-primary {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}
.btn-primary:hover { color: var(--paper); background: var(--accent-strong); border-color: var(--accent-strong); }
html.dark .btn-primary:hover { background: var(--accent); border-color: var(--accent); color: var(--paper); }
.btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.btn-ghost { border-color: transparent; background: transparent; color: var(--muted); }
.btn-ghost:hover { color: var(--ink); border-color: var(--line-strong); background: var(--surface); }

/* ---------- 徽标 / 标签 ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  white-space: nowrap;
}
.badge-eu { color: var(--eu); border-color: var(--eu); background: var(--eu-soft); }
.badge-cn { color: var(--cn); border-color: var(--cn); background: var(--cn-soft); }
.badge-src { color: var(--muted); border-color: var(--line-strong); background: transparent; }
.badge-fmt { color: var(--faint); border-color: var(--line); background: transparent; }
.tag-chip {
  display: inline-flex;
  align-items: center;
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 3px 9px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--muted);
  background: transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
  min-height: 28px;
}
a.tag-chip:hover, button.tag-chip:hover { color: var(--accent-strong); border-color: var(--accent); }
html.dark a.tag-chip:hover, html.dark button.tag-chip:hover { color: var(--accent); }

/* ---------- Toast ---------- */
.toast-region {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 300;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  pointer-events: none;
}
.toast {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--mono);
  font-size: 12.5px;
  padding: 10px 18px;
  border-radius: var(--radius);
  box-shadow: 0 4px 18px rgb(var(--ink-rgb) / 0.18);
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 220ms var(--ease), transform 220ms var(--ease);
  max-width: min(80vw, 480px);
  text-align: center;
}
.toast.show { opacity: 1; transform: translateY(0); }

/* ==========================================================================
   应用页（政策库 / 文献库）—— 主从式工作台
   ========================================================================== */
.app {
  height: calc(100dvh - var(--header-h));
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.app-head {
  padding: 14px var(--pad-page) 10px;
  border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.app-head-row {
  max-width: var(--content-max);
  margin: 0 auto;
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
}
.app-title { font-size: 20px; }
.app-desc { font-size: 12.5px; color: var(--faint); font-family: var(--mono); }

/* 筛选区 */
.filter-bar {
  position: relative;
  z-index: 20;
  padding: 10px var(--pad-page);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  display: grid;
  grid-template-columns: minmax(200px, 1.4fr) auto auto auto auto;
  gap: 10px;
  align-items: center;
}
.filter-bar-library {
  grid-template-columns: minmax(160px, 1fr) auto repeat(4, auto);
}
.filter-bar-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
  display: contents;
}
.search-control {
  position: relative;
  display: flex;
  align-items: center;
}
.search-control svg {
  position: absolute;
  left: 10px;
  width: 16px; height: 16px;
  color: var(--faint);
  pointer-events: none;
}
.search-control input {
  width: 100%;
  min-width: 0;
  padding: 9px 30px 9px 34px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 13.5px;
  min-height: 40px;
}
.search-control input::placeholder { color: var(--faint); }
.search-control kbd {
  position: absolute;
  right: 9px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1px 6px;
  background: var(--paper);
  pointer-events: none;
}
.segmented {
  display: inline-flex;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 40px;
}
.segmented button {
  padding: 0 14px;
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
  border-left: 1px solid var(--line);
  transition: background 180ms var(--ease), color 180ms var(--ease);
  min-height: 40px;
}
.segmented button:first-child { border-left: none; }
.segmented button:hover { color: var(--ink); }
.segmented button[aria-pressed="true"] {
  background: var(--ink);
  color: var(--paper);
}
.select-control { position: relative; display: flex; align-items: center; }
.select-control select {
  appearance: none;
  -webkit-appearance: none;
  padding: 9px 28px 9px 12px;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  font-size: 13px;
  min-height: 40px;
  cursor: pointer;
}
.select-control::after {
  content: "";
  position: absolute;
  right: 11px;
  width: 7px; height: 7px;
  border-right: 1.5px solid var(--faint);
  border-bottom: 1.5px solid var(--faint);
  transform: rotate(45deg) translateY(-2px);
  pointer-events: none;
}
.filter-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px var(--pad-page) 0;
}
.filter-actions-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.result-count {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--muted);
  white-space: nowrap;
}
.chip-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; flex: 1; min-width: 0; }
.filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  padding: 4px 8px;
  border: 1px solid var(--accent);
  color: var(--accent-strong);
  border-radius: var(--radius);
  background: var(--accent-soft);
  min-height: 30px;
}
html.dark .filter-chip { color: var(--accent); }
.filter-chip button {
  display: inline-flex;
  color: inherit;
  font-size: 13px;
  line-height: 1;
  padding: 2px;
}
.action-spacer { flex: 1; }

/* 主从布局 */
.app-body {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: 43fr 57fr;
  max-width: none;
}
.results-pane {
  border-right: 1px solid var(--line);
  overflow-y: auto;
  min-height: 0;
  background: var(--surface);
  overscroll-behavior: contain;
}
.results-list { display: flex; flex-direction: column; }
.result-row {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 10px;
  padding: 13px 16px 13px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
  position: relative;
  text-align: left;
  width: 100%;
  transition: background 160ms var(--ease);
}
.result-row:hover { background: var(--paper); }
.result-row[aria-selected="true"] {
  background: var(--paper);
}
.result-row[aria-selected="true"]::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
  background: var(--accent);
}
.row-num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  text-align: right;
  padding-top: 3px;
}
.row-main { min-width: 0; display: flex; flex-direction: column; gap: 5px; }
.row-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.row-date { font-family: var(--mono); font-size: 11.5px; color: var(--faint); }
.row-title-zh {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 14.5px;
  line-height: 1.4;
}
.row-title-en {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.row-tags { display: flex; gap: 5px; flex-wrap: wrap; }
.empty-state {
  padding: 56px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}
.empty-state p { color: var(--muted); font-size: 13.5px; }

/* 详情阅读器 */
.detail-backdrop {
  display: none;
}
.detail-pane {
  overflow-y: auto;
  min-height: 0;
  background: var(--paper);
  overscroll-behavior: contain;
}
.detail-inner { max-width: 860px; padding: 26px clamp(20px, 3.5vw, 48px) 64px; }
.detail-top {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}
.detail-close { display: none; }
.detail-title-zh { font-size: clamp(21px, 2.4vw, 28px); margin-bottom: 8px; }
.detail-title-en { font-size: 14.5px; color: var(--muted); font-style: italic; margin-bottom: 6px; }
.detail-cn-label { font-size: 13.5px; color: var(--muted); margin-bottom: 18px; }
.detail-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  margin-bottom: 22px;
}
.detail-actions .btn { min-height: 38px; padding: 7px 13px; font-size: 12.5px; }

/* 标签页 */
.tablist {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--line-strong);
  margin-bottom: 24px;
}
.tablist [role="tab"] {
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
  min-height: 44px;
}
.tablist [role="tab"]:hover { color: var(--ink); }
.tablist [role="tab"][aria-selected="true"] {
  color: var(--ink);
  border-bottom-color: var(--accent);
}
.detail-section { margin-bottom: 26px; }
.detail-section h3 {
  font-size: 12px;
  font-family: var(--mono);
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--faint);
  text-transform: uppercase;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.detail-section h3::after { content: ""; flex: 1; height: 1px; background: var(--line); }
.detail-bilingual { display: grid; gap: 12px; }
.detail-zh { font-size: 14.5px; line-height: 1.8; }
.detail-en { font-size: 13px; color: var(--muted); line-height: 1.7; border-left: 2px solid var(--line); padding-left: 14px; }
.detail-tags-block { display: flex; flex-direction: column; gap: 10px; }
.detail-tags-row { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.detail-tags-label { font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: 0.1em; }
.detail-meta-grid {
  display: flex;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
  margin-bottom: 24px;
}
.detail-meta-cell {
  flex: 1 1 180px;
  min-width: 0;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--paper);
  padding: 10px 14px;
}
.detail-meta-cell dt {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--faint);
  text-transform: uppercase;
  margin-bottom: 4px;
}
.detail-meta-cell dd { margin: 0; font-size: 13px; font-family: var(--mono); overflow-wrap: anywhere; }

/* 原始文件 iframe */
.original-frame-wrap {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.original-frame-wrap iframe {
  width: 100%;
  height: min(72vh, 780px);
  border: none;
  background: #fff;
}
.original-frame-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--faint);
  flex-wrap: wrap;
}
.original-missing { padding: 32px 20px; text-align: center; color: var(--muted); font-size: 13.5px; }

/* ==========================================================================
   首页
   ========================================================================== */
.hero {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: clamp(40px, 7vh, 88px) var(--pad-page) 40px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(28px, 5vw, 72px);
  align-items: start;
}
.kicker {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.22em;
  color: var(--accent-strong);
  text-transform: uppercase;
  margin-bottom: 18px;
}
html.dark .kicker { color: var(--accent); }
.hero h1 {
  font-size: clamp(34px, 4.6vw, 58px);
  margin-bottom: 20px;
  letter-spacing: 0.01em;
}
.hero h1 em { font-style: normal; color: var(--accent-strong); }
html.dark .hero h1 em { color: var(--accent); }
.hero-lede {
  font-size: 15.5px;
  color: var(--muted);
  max-width: 52ch;
  margin-bottom: 28px;
}
.hero-search { max-width: 520px; margin-bottom: 22px; }
.hero-search .search-control input {
  min-height: 48px;
  font-size: 14.5px;
  padding-left: 38px;
}
.hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }

.hero-index {
  border: 1px solid var(--line);
  background: var(--surface);
  border-radius: var(--radius);
  padding: clamp(18px, 2.4vw, 28px);
}
.hero-index-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 18px;
}
.hero-index-head h2 { font-size: 17px; }
.hero-index-head span { font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: 0.12em; }
.index-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  margin-bottom: 20px;
}
.index-stat { background: var(--surface); padding: 14px 16px; }
.index-stat .num {
  font-family: var(--serif);
  font-size: clamp(26px, 2.6vw, 34px);
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.index-stat .num.eu { color: var(--eu); }
.index-stat .num.cn { color: var(--cn); }
.index-stat .lbl {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
  letter-spacing: 0.1em;
  margin-top: 4px;
}
.hero-chart-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--faint);
  text-transform: uppercase;
  margin-bottom: 8px;
}
.legend { display: flex; gap: 16px; margin-bottom: 6px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.legend-swatch { width: 14px; height: 3px; display: inline-block; }
.legend-swatch.eu { background: var(--eu); }
.legend-swatch.cn { background: var(--cn); }

.section {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 44px var(--pad-page);
}
.section + .section { border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: baseline; gap: 14px; margin-bottom: 26px; flex-wrap: wrap; }
.section-head h2 { font-size: clamp(22px, 2.6vw, 30px); }
.section-head .en {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--faint);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.section-head .more {
  margin-left: auto;
  font-size: 13px;
  color: var(--accent-strong);
  font-weight: 600;
  white-space: nowrap;
}
html.dark .section-head .more { color: var(--accent); }

.metric-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.metric-cell { background: var(--paper); padding: 22px clamp(14px, 2vw, 26px); }
.metric-cell .num {
  font-family: var(--serif);
  font-size: clamp(32px, 3.6vw, 46px);
  font-weight: 700;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}
.metric-cell .lbl {
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--faint);
  letter-spacing: 0.1em;
  margin-top: 6px;
}

/* 年度图表（首页） */
.yearly-chart { display: flex; flex-direction: column; gap: 7px; }
.yearly-row {
  display: grid;
  grid-template-columns: 52px 1fr;
  gap: 12px;
  align-items: center;
}
.yearly-row .y-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  text-align: right;
  transition: color 160ms var(--ease);
}
.yearly-bars { display: flex; flex-direction: column; gap: 3px; }
.yearly-bar-link { display: block; position: relative; }
.yearly-bar {
  height: 11px;
  background: var(--eu);
  min-width: 2px;
  transition: opacity 160ms var(--ease);
  width: var(--w, 0%);
}
.yearly-bar.cn { background: var(--cn); }
.yearly-bar-link:hover .yearly-bar { opacity: 0.72; }
.yearly-bar-link:hover .y-label { color: var(--accent-strong); }
.yearly-bar-link:focus-visible { outline-offset: 1px; }

.latest-list { display: flex; flex-direction: column; }
.latest-item {
  display: grid;
  grid-template-columns: 86px 40px 1fr;
  gap: 14px;
  align-items: baseline;
  padding: 15px 4px;
  border-bottom: 1px solid var(--line);
  transition: background 160ms var(--ease);
}
.latest-item:hover { background: var(--surface); }
.latest-item .li-date { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.latest-item .li-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 15.5px;
  line-height: 1.45;
}
.latest-item .li-sub { font-size: 12.5px; color: var(--muted); margin-top: 3px; }

.coll-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.coll-cell {
  background: var(--paper);
  padding: 26px clamp(16px, 2vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: background 200ms var(--ease);
}
.coll-cell:hover { background: var(--surface); }
.coll-cell .coll-no { font-family: var(--mono); font-size: 12px; color: var(--accent-strong); letter-spacing: 0.18em; }
html.dark .coll-cell .coll-no { color: var(--accent); }
.coll-cell h3 { font-size: 20px; }
.coll-cell .coll-count { font-family: var(--mono); font-size: 12px; color: var(--faint); }
.coll-cell .coll-arrow { margin-top: auto; color: var(--faint); font-family: var(--mono); font-size: 12px; }

/* ==========================================================================
   数据总览
   ========================================================================== */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.stats-asof {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
  margin: -14px 0 30px;
}
.charts-2col { display: grid; grid-template-columns: 1.35fr 0.65fr; gap: clamp(20px, 3vw, 44px); align-items: start; }
.panel { margin-bottom: 40px; }
.panel-title {
  font-size: 18px;
  margin-bottom: 4px;
}
.panel-sub { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-bottom: 18px; }

/* 双向条形图 */
.diverging-row {
  display: grid;
  grid-template-columns: 52px 1fr 1fr 40px;
  gap: 8px;
  align-items: center;
  margin-bottom: 6px;
}
.diverging-row .y-label { font-family: var(--mono); font-size: 11.5px; color: var(--muted); text-align: center; }
.dv-track { position: relative; height: 13px; }
.dv-track.cn { direction: rtl; }
.dv-bar { display: block; height: 100%; background: var(--eu); min-width: 2px; transition: opacity 160ms var(--ease); }
.dv-bar.cn { background: var(--cn); }
.dv-link { display: block; height: 100%; }
.dv-link:hover .dv-bar { opacity: 0.72; }
.dv-count { font-family: var(--mono); font-size: 11px; color: var(--faint); }
.diverging-axis {
  display: grid;
  grid-template-columns: 52px 1fr 1fr 40px;
  gap: 8px;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--faint);
}
.diverging-axis .axis-mid { grid-column: 2 / 4; text-align: center; border-top: 1px solid var(--line-strong); padding-top: 4px; }

/* 排行条形图 */
.rank-list { display: flex; flex-direction: column; gap: 5px; }
.rank-row {
  display: grid;
  grid-template-columns: minmax(120px, 220px) 1fr 34px;
  gap: 10px;
  align-items: center;
  padding: 4px 0;
}
.rank-row .rank-label {
  font-size: 12.5px;
  color: var(--ink);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.rank-row .rank-bar-track { height: 12px; background: var(--surface-2); position: relative; }
.rank-row .rank-bar { display: block; height: 100%; background: var(--eu); min-width: 2px; transition: opacity 160ms var(--ease); }
.rank-row.cn .rank-bar { background: var(--cn); }
.rank-row.neutral .rank-bar { background: var(--accent); }
.rank-row:hover .rank-bar { opacity: 0.72; }
.rank-row .rank-count { font-family: var(--mono); font-size: 11.5px; color: var(--faint); text-align: right; }

/* 环图 */
.donut-wrap { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.donut-svg { width: 168px; height: 168px; flex-shrink: 0; }
.donut-legend { display: flex; flex-direction: column; gap: 10px; }
.donut-legend a { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink); }
.donut-legend .dot { width: 10px; height: 10px; border-radius: 50%; }
.donut-legend .dot.eu { background: var(--eu); }
.donut-legend .dot.cn { background: var(--cn); }
.donut-legend .cnt { font-family: var(--mono); font-size: 11.5px; color: var(--faint); margin-left: auto; padding-left: 14px; }

/* 最新政策（stats） */
.compact-list { display: flex; flex-direction: column; }
.compact-item {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 4px;
  border-bottom: 1px solid var(--line);
}
.compact-item .ci-date { font-family: var(--mono); font-size: 11.5px; color: var(--faint); white-space: nowrap; }
.compact-item .ci-title { font-size: 13.5px; font-family: var(--serif); font-weight: 700; color: var(--ink); }

/* ---------- 界面精修 ---------- */
html { -webkit-tap-highlight-color: transparent; }
button, a, [role="button"], .result-row { touch-action: manipulation; }
button, [role="button"], .btn, .icon-btn, .tag-chip, .result-row { user-select: none; -webkit-user-select: none; }
.btn { transition: border-color 180ms var(--ease), background 180ms var(--ease), color 180ms var(--ease), transform 120ms ease-out; }
.btn:active, .icon-btn:active, .tag-chip:active { transform: scale(0.97); }
.index-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}
.index-actions a { font-size: 13px; font-weight: 600; color: var(--accent-strong); }
html.dark .index-actions a { color: var(--accent); }
.result-row[aria-selected="true"] { background: var(--accent-soft); }
.row-title-zh { font-family: var(--sans); font-weight: 600; font-size: 14.5px; line-height: 1.45; }
.badge-fmt { color: var(--muted); border-color: transparent; background: var(--surface-2); }
.detail-quick-links { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.detail-quick-links .tag-chip { min-height: 34px; }

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width: 1080px) {
  .app-body { grid-template-columns: 45fr 55fr; }
}

@media (max-width: 900px) {
  :root { --header-h: 64px; }
  .main-nav { display: none; }
  .menu-btn { display: inline-flex; }
  .header-actions { margin-left: auto; }

  .hero { grid-template-columns: 1fr; padding-top: 36px; }
  .metric-band { grid-template-columns: repeat(2, 1fr); }
  .charts-2col { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .coll-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }

  .app { height: auto; min-height: calc(100dvh - var(--header-h)); }
  .app-head { position: static; }
  .filter-bar {
    position: sticky;
    top: 0;
    z-index: 30;
    background: var(--paper);
  }
  .filter-actions { padding-bottom: 8px; }
  .app-body { display: block; }
  .results-pane { border-right: none; overflow: visible; }
  .result-row { padding-left: 8px; }

  /* 移动详情：右侧滑入全屏阅读器 */
  .detail-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgb(var(--ink-rgb) / 0.42);
    opacity: 0;
    pointer-events: none;
    transition: opacity 240ms var(--ease);
    z-index: 70;
  }
  .detail-backdrop.show { opacity: 1; pointer-events: auto; }
  .detail-pane {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    width: min(100%, 560px);
    transform: translateX(102%);
    transition: transform 260ms var(--ease);
    z-index: 80;
    box-shadow: -12px 0 40px rgb(var(--ink-rgb) / 0.18);
    overscroll-behavior: contain;
  }
  .detail-pane.open { transform: translateX(0); }
  .detail-close {
    display: inline-flex;
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 5;
  }
  body.detail-open { overflow: hidden; }
  .original-frame-wrap iframe { height: 70vh; }
  .tablist [role="tab"], .btn, .segmented button, .select-control select, .filter-chip { min-height: 44px; }
  .tag-chip { min-height: 34px; }
}

@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .filter-bar {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
  }
  .search-control, .segmented { grid-column: 1 / -1; }
  .segmented { display: grid; grid-template-columns: repeat(3, 1fr); }
  .segmented.seg-4 { grid-template-columns: repeat(4, 1fr); }
  .segmented button { padding: 0 6px; font-size: 12.5px; }
  .filter-bar-library { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .select-control select { width: 100%; min-width: 0; font-size: 16px; }
  .search-control input { font-size: 16px; }
  .latest-item { grid-template-columns: 1fr; gap: 6px; }
  .latest-item .row-badge-slot { display: none; }
  .latest-item .li-side { display: none; }
  .rank-row { grid-template-columns: minmax(84px, 130px) 1fr 30px; }
  .rank-row .rank-label { font-size: 11.5px; }
  .diverging-row { grid-template-columns: 44px 1fr 1fr 30px; }
  .diverging-axis { grid-template-columns: 44px 1fr 1fr 30px; }
  .detail-bilingual { display: flex; flex-direction: column; }
  .detail-en { border-left: none; border-top: 1px solid var(--line); padding-left: 0; padding-top: 10px; }
  .yearly-row { grid-template-columns: 40px 1fr; }
  .detail-meta-cell { flex-basis: 45%; }
  .app-title { font-size: 17px; }
}

/* ==========================================================================
   打印
   ========================================================================== */
@media print {
  .site-header, .site-footer, .app-head, .filter-bar, .filter-actions,
  .results-pane, .detail-backdrop, .toast-region, .mobile-menu,
  .detail-actions, .tablist, .detail-close, .skip-link { display: none !important; }
  body { background: #fff; color: #000; }
  .app { height: auto; }
  .app-body { display: block; }
  .detail-pane { position: static !important; transform: none !important; overflow: visible; box-shadow: none; width: auto; }
  .detail-inner { max-width: none; padding: 0; }
  .detail-section { break-inside: avoid; }
  a { color: #000; }
}
 a { color: #000; }
}