/* =========================================================================
   Frontier Theory Radar — Academic Journal Stylesheet
   Inspired by Nature, Science, arXiv editorial design.
   Flat, hairline-ruled, serif typography.
   ========================================================================= */

:root {
  /* Paper / ink */
  --paper: #fdfcfa;            /* ivory paper */
  --paper-soft: #f7f5f0;       /* slightly deeper paper, for block separation */
  --ink: #1a1a2e;              /* deep ink for body */
  --ink-soft: #4a4a5e;         /* secondary text */
  --ink-muted: #8a8a9a;        /* tertiary / muted text */
  --rule: #d4d0c8;             /* hairline rule */
  --rule-soft: #e8e4dc;        /* secondary rule */

  /* Interaction colors */
  --accent: #1a3a5c;           /* academic deep blue (primary interaction) */
  --accent-soft: #e8f0f7;      /* pale blue background */
  --highlight: #8b6914;        /* bronze (highlight / important mark) */
  --highlight-soft: #f5f0e0;   /* pale bronze background */
  --success: #2d5a3d;          /* deep green (available / recommended) */
  --success-soft: #e8f0eb;
  --danger: #8b2c2c;           /* dark red (unavailable / risk) */
  --danger-soft: #f5e8e8;

  /* Typography */
  --font-serif: Georgia, "Source Serif Pro", "Noto Serif SC", "Times New Roman", serif;
  --font-body: Georgia, "Source Serif Pro", "Noto Serif SC", "Times New Roman", serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  /* Layout */
  --reading-width: 800px;
  --page-width: 1180px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Headings — serif, heavier weight */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.3;
}

p { margin: 0 0 1em; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s ease;
}
a:hover { border-bottom-color: var(--accent); text-decoration: none; }

strong { font-weight: 700; color: var(--ink); }

/* Code / data */
code, pre, .mono, .num, .kpi-number, .daily-row-date, .score {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* =========================================================================
   Navigation — white ground, heavy bottom rule (journal masthead style)
   ========================================================================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #ffffff;
  border-bottom: 2px solid #1a1a2e;
}
.navbar-inner {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
  color: var(--ink);
}
.navbar-brand:hover { border-bottom-color: transparent; }
.brand-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 0;  /* square mark — journal style */
}
.navbar-links {
  display: flex;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.navbar-links a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  transition: color .15s ease, border-color .15s ease;
}
.navbar-links a:hover {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: transparent;
}
.navbar-links a.active {
  color: var(--ink);
  border-bottom-color: var(--ink);
  background: transparent;
}
.navbar-toggle {
  display: none;
  background: none;
  border: 1px solid var(--rule);
  font-size: 20px;
  padding: 4px 10px;
  color: var(--ink);
  cursor: pointer;
}

/* =========================================================================
   Layout containers
   ========================================================================= */
.container {
  max-width: var(--page-width);
  margin: 0 auto;
  padding: 40px 24px 72px;
}

/* Reading-width wrapper for prose-heavy detail pages */
.container > [id$="-root"] {
  max-width: var(--reading-width);
  margin: 0 auto;
}

/* =========================================================================
   Hero — journal title block (flat, ruled, centered)
   ========================================================================= */
.hero {
  background: var(--paper);
  border-top: 3px solid var(--ink);
  border-bottom: 1px solid var(--rule);
  padding: 40px 0 32px;
  margin-bottom: 32px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--ink-muted);
  padding: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--rule);
}
.hero-badge .dot {
  width: 6px;
  height: 6px;
  background: var(--highlight);
  border-radius: 0;
}
.hero h1 {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-size: 38px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
}
.hero p {
  margin: 0;
  max-width: 760px;
  color: var(--ink-soft);
  font-size: 17px;
  font-style: italic;
}
.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

/* =========================================================================
   Buttons — flat, ruled (no shadows)
   ========================================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease;
}
.btn:hover {
  border-bottom-color: var(--rule);
  background: var(--paper-soft);
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
  border-color: var(--accent);
}
.btn-primary:hover {
  background: #142e47;
  border-color: #142e47;
  color: #ffffff;
}
.btn-secondary {
  background: var(--paper);
  color: var(--accent);
  border-color: var(--accent);
}
.btn-secondary:hover {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}
.btn-sm {
  padding: 5px 10px;
  font-size: 12px;
}

/* =========================================================================
   KPI grid — tabular figures, no cards/shadows
   ========================================================================= */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 0;
  margin-bottom: 32px;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
.kpi-card {
  padding: 18px 16px;
  text-align: center;
  border-right: 1px solid var(--rule-soft);
}
.kpi-card:last-child { border-right: none; }
.kpi-number {
  font-size: 28px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 2px;
  letter-spacing: -.01em;
}
.kpi-label {
  font-size: 12px;
  color: var(--ink-muted);
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
}

/* =========================================================================
   Sections
   ========================================================================= */
.section { margin-bottom: 36px; }
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--rule);
}
.section-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  margin: 0;
  color: var(--ink);
}
.section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  font-size: 16px;
  background: transparent;
  border: none;
  border-radius: 0;
}

/* =========================================================================
   Cards / entries — hairline-ruled journal entries (no shadow, no rounding)
   ========================================================================= */
.card,
.kpi-card,
.stat-card,
.source-item,
.empty-state,
.error-state {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 0;
  box-shadow: none;
}
.card {
  padding: 20px 22px;
}
.card-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--ink);
  line-height: 1.35;
}
.card-title a { color: var(--accent); }
.card-meta {
  font-size: 13px;
  color: var(--ink-muted);
  margin-bottom: 10px;
}
.card-desc, .muted { color: var(--ink-soft); }
.card p { font-size: 15px; color: var(--ink-soft); }

/* Grids */
.grid { display: grid; gap: 16px; }
.grid-1 { grid-template-columns: 1fr; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }

/* =========================================================================
   Badges — minimal, ruled, lowercase caps; color via text not fill
   ========================================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  border: 1px solid var(--rule);
  background: var(--paper-soft);
  color: var(--ink-soft);
}
.badge-immediate, .badge-focus, .badge-mainstream {
  color: var(--success);
  border-color: var(--success);
  background: var(--success-soft);
}
.badge-trend, .badge-trial, .badge-rising {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
}
.badge-long-tail, .badge-watch, .badge-emerging {
  color: var(--highlight);
  border-color: var(--highlight);
  background: var(--highlight-soft);
}
.badge-ignore, .badge-noise {
  color: var(--ink-muted);
  border-color: var(--rule);
  background: var(--paper-soft);
}
.badge-overheated {
  color: var(--danger);
  border-color: var(--danger);
  background: var(--danger-soft);
}
.badge-group { display: flex; gap: 6px; flex-wrap: wrap; }

/* Topic chips — journal keyword style */
.topic-chip {
  display: inline-flex;
  padding: 2px 8px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  border-radius: 0;
}
.topic-chip-light {
  background: var(--paper-soft);
  color: var(--ink-soft);
  border-color: var(--rule-soft);
}

/* =========================================================================
   Tables — ruled, journal reference-table style
   ========================================================================= */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  font-family: var(--font-body);
}
th, td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--rule-soft);
  vertical-align: top;
  text-align: left;
}
th {
  background: var(--paper-soft);
  color: var(--ink);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: .02em;
  border-bottom: 2px solid var(--ink);
  position: sticky;
  top: 0;
}
td.num { text-align: right; font-family: var(--font-mono); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover td { background: var(--paper-soft); }

/* Score numbers — tabular, accent-colored */
.score {
  font-weight: 700;
  color: var(--accent);
}

/* =========================================================================
   Filter bar — flat, ruled
   ========================================================================= */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 16px;
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-radius: 0;
  box-shadow: none;
  margin-bottom: 14px;
}
.filter-bar select,
.filter-bar input {
  padding: 6px 10px;
  border: 1px solid var(--rule);
  border-radius: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  min-height: 32px;
}
.filter-bar select:focus,
.filter-bar input:focus {
  outline: none;
  border-color: var(--accent);
}
.filter-bar label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  min-width: 140px;
}
.filter-summary { margin: 6px 0 16px; }

/* =========================================================================
   Paper links — compact inline links
   ========================================================================= */
.link-row { display: flex; flex-wrap: wrap; gap: 4px 8px; }
.paper-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  border: 1px solid var(--rule);
  background: var(--paper);
  color: var(--ink-soft);
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  border-radius: 2px;
  text-decoration: none;
  white-space: nowrap;
  transition: background 0.12s ease, border-color 0.12s ease, color 0.12s ease;
}
.paper-link:hover { background: var(--paper-soft); border-color: var(--ink-soft); color: var(--ink); text-decoration: none; }
.paper-link.disabled { color: var(--rule); background: transparent; }

/* Link cluster — primary link + "More ▾" popover, single row, never wraps */
.link-cluster {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
}
.paper-link-primary {
  background: var(--ink);
  border-color: var(--ink);
  color: var(--paper);
  font-weight: 500;
}
.paper-link-primary:hover { background: #000; border-color: #000; color: var(--paper); }
.paper-link-more {
  cursor: pointer;
  font: inherit;
  background: var(--paper);
  color: var(--ink-soft);
}
.paper-link-more .caret { font-size: 10px; transition: transform 0.15s ease; display: inline-block; }
.paper-link-more[aria-expanded="true"] .caret { transform: rotate(180deg); }
.paper-link-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  z-index: 30;
  min-width: 160px;
  padding: 4px;
  background: var(--paper);
  border: 1px solid var(--ink);
  border-radius: 2px;
  box-shadow: 0 8px 24px rgba(20, 20, 30, 0.12);
  display: none;
  flex-direction: column;
  gap: 2px;
}
.paper-link-menu.open { display: flex; }
.paper-link-menu-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 6px 10px;
  font-size: 13px;
  border: none;
  background: transparent;
  color: var(--ink);
  border-radius: 0;
  text-align: left;
}
.paper-link-menu-item:hover { background: var(--paper-soft); color: var(--accent); border-color: transparent; }

/* =========================================================================
   Table column hover — academic journal style
   ========================================================================= */
.table-wrapper {
  position: relative;
  overflow-x: auto;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 0;
  box-shadow: none;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--ink-soft) var(--paper-soft);
}
.table-wrapper::-webkit-scrollbar { height: 8px; }
.table-wrapper::-webkit-scrollbar-track { background: var(--paper-soft); }
.table-wrapper::-webkit-scrollbar-thumb { background: var(--ink-soft); border-radius: 0; }

/* Right-edge fade — tells the user the table scrolls horizontally */
.table-wrapper.has-overflow::after {
  content: '';
  position: sticky;
  right: 0;
  top: 0;
  bottom: 0;
  width: 32px;
  background: linear-gradient(to right, transparent, var(--paper));
  pointer-events: none;
}

/* Column hover — highlight the whole column on cell hover (thead + tbody in same col) */
.table-wrapper table { border-collapse: separate; border-spacing: 0; }
.table-wrapper tbody td { transition: background 0.12s ease; }
.table-wrapper tbody tr:hover td { background: var(--paper-soft); }
.table-wrapper tbody td:hover { background: var(--accent-soft) !important; }
.table-wrapper th.col-hover, .table-wrapper td.col-hover { background: rgba(26, 58, 92, 0.06); }

/* Cell sub-line (paper brief under title) */
.cell-sub {
  margin-top: 4px;
  font-size: 12px;
  line-height: 1.5;
  color: var(--ink-muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Long cell — 2-line clamp by default, expand on click */
.long-cell { position: relative; }
.long-cell-text {
  font-size: 13px;
  line-height: 1.55;
  color: var(--ink-soft);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  word-break: break-word;
}
.long-cell.expanded .long-cell-text {
  display: block;
  -webkit-line-clamp: unset;
  overflow: visible;
}
.long-cell-toggle {
  margin-top: 4px;
  background: transparent;
  border: none;
  padding: 0;
  font: inherit;
  font-size: 12px;
  color: var(--accent);
  cursor: pointer;
  letter-spacing: .02em;
}
.long-cell-toggle:hover { text-decoration: underline; }
.long-cell-toggle::before { content: '⋯ '; color: var(--ink-muted); }

/* Long-tail page — 7 columns with text-heavy cells, table-layout fixed for stable widths. */
body[data-page="long-tail"] .table-wrapper table {
  table-layout: fixed;
  min-width: 1100px;
  width: 100%;
}
body[data-page="long-tail"] .table-wrapper th:nth-child(1),
body[data-page="long-tail"] .table-wrapper td:nth-child(1) { width: 18%; }  /* 标题 */
body[data-page="long-tail"] .table-wrapper th:nth-child(2),
body[data-page="long-tail"] .table-wrapper td:nth-child(2) { width: 9%; }   /* 方向 */
body[data-page="long-tail"] .table-wrapper th:nth-child(3),
body[data-page="long-tail"] .table-wrapper td:nth-child(3) { width: 11%; }  /* 长尾价值类型 */
body[data-page="long-tail"] .table-wrapper th:nth-child(4),
body[data-page="long-tail"] .table-wrapper td:nth-child(4) { width: 22%; }  /* 为什么保存 */
body[data-page="long-tail"] .table-wrapper th:nth-child(5),
body[data-page="long-tail"] .table-wrapper td:nth-child(5) { width: 20%; }  /* 未来触发条件 */
body[data-page="long-tail"] .table-wrapper th:nth-child(6),
body[data-page="long-tail"] .table-wrapper td:nth-child(6) { width: 14%; }  /* 可沉淀资产 */
body[data-page="long-tail"] .table-wrapper th:nth-child(7),
body[data-page="long-tail"] .table-wrapper td:nth-child(7) { width: 6%; text-align: right; }  /* 复盘时间 */
body[data-page="long-tail"] .table-wrapper th,
body[data-page="long-tail"] .table-wrapper td { white-space: nowrap; vertical-align: top; padding-top: 14px; padding-bottom: 14px; }
body[data-page="long-tail"] .table-wrapper td:nth-child(1),
body[data-page="long-tail"] .table-wrapper td:nth-child(4),
body[data-page="long-tail"] .table-wrapper td:nth-child(5),
body[data-page="long-tail"] .table-wrapper td:nth-child(6) { white-space: normal; }
  line-height: 1.5;
  white-space: nowrap;
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* =========================================================================
   Daily / highlight / callout blocks — ruled, flat
   ========================================================================= */
.daily-card-insight,
.highlight-box,
.callout {
  background: var(--paper-soft);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 0;
  box-shadow: none;
  padding: 14px 16px;
}
.highlight-box { border-left-color: var(--highlight); }
.callout { border-left-color: var(--highlight); }

.mermaid-shell {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 0;
  box-shadow: none;
  padding: 16px;
  text-align: center;
}
.mermaid-shell pre {
  margin: 12px 0 0;
  white-space: pre-wrap;
  font-size: 12px;
  color: var(--ink-muted);
  text-align: left;
}

/* Daily summary row */
.daily-row-list { gap: 14px; }
.daily-row-main { min-width: 0; }
.daily-row-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 220px;
  gap: 18px;
  align-items: start;
}
.daily-row-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.daily-row-date {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--highlight);
  text-transform: uppercase;
}
.daily-row-title { margin-bottom: 6px; }
.daily-row-meta { font-size: 13px; margin-bottom: 10px; }
.daily-row-insight { padding: 12px 14px; }
.daily-row-side {
  display: grid;
  gap: 8px;
  padding-left: 4px;
  border-left: 1px solid var(--rule-soft);
  padding-left: 14px;
}
.daily-row-action-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-muted);
}
.daily-row-action {
  font-size: 14px;
  color: var(--ink);
}

/* List stack */
.list-stack { display: grid; gap: 12px; }
.item-row {
  padding: 12px 0;
  border-bottom: 1px solid var(--rule-soft);
}
.item-row:last-child { border-bottom: none; }

/* Source items */
.source-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
}

/* Homepage row card */
.homepage-row-card { padding-bottom: 18px; }

/* =========================================================================
   Page header
   ========================================================================= */
.page-header {
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--ink);
}
.page-header h1 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ink);
}
.page-header p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 15px;
}

/* =========================================================================
   Notes / lists
   ========================================================================= */
.note-list {
  margin: 8px 0 0;
  padding-left: 20px;
}
.note-list li {
  margin: 6px 0;
  line-height: 1.6;
  color: var(--ink-soft);
}
.note-list li strong { color: var(--ink); }

/* Detail-page two-column layout */
.columns-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  align-items: start;
}

/* =========================================================================
   States: loading / empty / error
   ========================================================================= */
.loading, .empty-state, .error-state {
  padding: 32px 28px;
  text-align: center;
  color: var(--ink-muted);
  font-style: italic;
}
.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--rule);
  border-top-color: var(--accent);
  border-radius: 50%;
  display: inline-block;
  animation: spin 1s linear infinite;
  margin-bottom: 8px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* =========================================================================
   Footer — masthead bottom rule
   ========================================================================= */
.footer {
  text-align: center;
  padding: 28px 0;
  border-top: 2px solid var(--ink);
  color: var(--ink-muted);
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: .02em;
}

/* =========================================================================
   Prose rendered from markdown (detail pages)
   ========================================================================= */
.raw-markdown, .raw-markdown_html { color: var(--ink-soft); }
h2, h3, h4 { margin-top: 1.4em; }

/* Selection */
::selection {
  background: var(--accent-soft);
  color: var(--accent);
}

/* =========================================================================
   Responsive
   ========================================================================= */
@media (max-width: 900px) {
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .kpi-card:nth-child(2) { border-right: none; }
  .kpi-card:nth-child(-n+2) { border-bottom: 1px solid var(--rule-soft); }
  .grid-2, .grid-3, .grid-4, .columns-2, .daily-row-card { grid-template-columns: 1fr; }
  .daily-row-side { border-left: none; padding-left: 0; border-top: 1px solid var(--rule-soft); padding-top: 12px; }
  .hero h1 { font-size: 28px; }
  .navbar-toggle { display: block; }
  .navbar-links {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    background: #ffffff;
    border-bottom: 2px solid var(--ink);
    padding: 12px 24px;
    flex-direction: column;
  }
  .navbar-links.open { display: flex; }
  .navbar-links a { border-bottom: 1px solid var(--rule-soft) !important; }
}

/* Papers page table — widths sized for 8 columns to fit standard laptop viewports.
   table-layout: fixed ensures the layout doesn't crush narrow columns when one cell has long text. */
body[data-page="papers"] .table-wrapper table {
  table-layout: fixed;
  min-width: 1200px;
  width: 100%;
}
body[data-page="papers"] .table-wrapper col,
body[data-page="papers"] .table-wrapper thead th { /* column widths by % */ }
body[data-page="papers"] .table-wrapper th:nth-child(1),
body[data-page="papers"] .table-wrapper td:nth-child(1) { width: 26%; }  /* 论文标题 */
body[data-page="papers"] .table-wrapper th:nth-child(2),
body[data-page="papers"] .table-wrapper td:nth-child(2) { width: 9%; }   /* 日期 */
body[data-page="papers"] .table-wrapper th:nth-child(3),
body[data-page="papers"] .table-wrapper td:nth-child(3) { width: 9%; }   /* 来源 */
body[data-page="papers"] .table-wrapper th:nth-child(4),
body[data-page="papers"] .table-wrapper td:nth-child(4) { width: 16%; }  /* 方向 */
body[data-page="papers"] .table-wrapper th:nth-child(5),
body[data-page="papers"] .table-wrapper td:nth-child(5) { width: 10%; }  /* 价值类型 */
body[data-page="papers"] .table-wrapper th:nth-child(6),
body[data-page="papers"] .table-wrapper td:nth-child(6) { width: 6%; text-align: right; }  /* 分数 */
body[data-page="papers"] .table-wrapper th:nth-child(7),
body[data-page="papers"] .table-wrapper td:nth-child(7) { width: 8%; }   /* 判断 */
body[data-page="papers"] .table-wrapper th:nth-child(8),
body[data-page="papers"] .table-wrapper td:nth-child(8) { width: 16%; }  /* 链接 */
body[data-page="papers"] .table-wrapper th,
body[data-page="papers"] .table-wrapper td { white-space: nowrap; }
body[data-page="papers"] .table-wrapper td:nth-child(1) { white-space: normal; }  /* 论文标题列允许换行（带子说明） */
body[data-page="papers"] .table-wrapper td:nth-child(4) { white-space: normal; }   /* 方向列允许换行 */
body[data-page="papers"] .table-wrapper td .cell-sub { white-space: normal; }