/*
 * AccountingBench — AI Accounting Intelligence Benchmark
 * Stylesheet — cleaned & consolidated
 *
 * Sections:
 *   1. Design tokens
 *   2. Reset & base
 *   3. Layout chrome  (nav, page-tabs, page-view, footer)
 *   4. Home           (ticker, hero, overview strip)
 *   5. Leaderboard    (table, mobile cards, heatmap, breakdown charts)
 *   6. Dashboard      (KPI cards, charts, scatter, calibration)
 *   7. Methodology    (hero, tabs, panels, pipeline, reference box)
 *   8. About          (person cards, affiliation box)
 *   9. Shared UI      (buttons, section headers, animations, canvas)
 *  10. Mobile system  (bottom tab bar, mobile cards, responsive overrides)
 */


/* ─────────────────────────────────────────────
   1. DESIGN TOKENS
   ───────────────────────────────────────────── */
:root {
  --wu-blue:    #003c78;
  --wu-blue2:   #0059b3;
  --wu-light:   #e8f0fb;
  --bg:         #f7f8fa;
  --surface:    #ffffff;
  --surface2:   #f0f2f6;
  --border:     #d6dce8;
  --border2:    #b8c4d8;
  --text:       #1a1f2e;
  --text-muted: #5a6478;
  --text-dim:   #8693a8;
  --green:      #0d7a4e;
  --green-bg:   #d1fae5;
  --red:        #b91c1c;
  --red-bg:     #fee2e2;
  --amber:      #92400e;
  --amber-bg:   #fef3c7;
  --gold:       #b45309;
  --silver:     #475569;
  --bronze:     #7c4a1e;
}


/* ─────────────────────────────────────────────
   2. RESET & BASE
   ───────────────────────────────────────────── */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
}

canvas { display: block; }


/* ─────────────────────────────────────────────
   3. LAYOUT CHROME
   ───────────────────────────────────────────── */

/* Nav */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 200;
  background: var(--surface);
  border-bottom: 3px solid var(--wu-blue);
  padding: 0 40px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  height: 68px;
  box-shadow: 0 2px 12px rgba(0,60,120,0.08);
}
.nav-left         { display: flex; align-items: center; gap: 18px; min-width: 0; flex: 1 1 auto; }
.nav-partners     { display: flex; align-items: center; gap: 14px; padding-right: 18px; margin-right: 2px; border-right: 1px solid var(--border); flex-shrink: 0; }
.nav-partner-link { display: flex; align-items: center; opacity: 0.9; transition: opacity 0.2s; }
.nav-partner-link:hover { opacity: 1; }
.nav-partner-logo-wu  { height: 42px; width: auto; display: block; }
.nav-partner-logo-bsc { height: 38px; width: auto; display: block; }
.nav-logo-wrap { display: flex; align-items: center; gap: 14px; text-decoration: none; flex-shrink: 0; }
.nav-logo-bar  { width: 4px; height: 34px; background: var(--wu-blue); }
.nav-logo      { font-weight: 700; font-size: 19px; letter-spacing: -0.3px; color: var(--wu-blue); white-space: nowrap; }
.nav-logo span { font-weight: 300; color: var(--wu-blue2); }
.nav-links     { display: flex; align-items: stretch; list-style: none; flex-shrink: 0; }
.nav-links li  { display: flex; align-items: stretch; }
.nav-links a {
  display: flex; align-items: center; padding: 0 16px;
  color: var(--text-muted); text-decoration: none;
  font-size: 11px; font-weight: 500; letter-spacing: 0.07em; text-transform: uppercase;
  border-bottom: 3px solid transparent; margin-bottom: -3px; transition: all 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--wu-blue); border-bottom-color: var(--wu-blue); }

/* Page tabs (desktop) */
.page-tabs {
  position: fixed; top: 68px; left: 0; right: 0; z-index: 190;
  background: var(--wu-blue);
  display: flex; padding: 0 40px;
  height: 44px; align-items: stretch;
  box-shadow: 0 2px 8px rgba(0,60,120,0.15);
}
.page-tab {
  display: flex; align-items: center; padding: 0 22px;
  color: rgba(255,255,255,0.55); text-decoration: none;
  font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  border-bottom: 3px solid transparent; transition: all 0.2s; cursor: pointer;
  background: none; border-left: none; border-right: none; border-top: none;
  font-family: 'IBM Plex Sans', sans-serif;
}
.page-tab:hover  { color: rgba(255,255,255,0.85); }
.page-tab.active { color: #fff; border-bottom: 3px solid rgba(255,255,255,0.7); pointer-events: none; cursor: default; }

/* Page views */
.page-view        { display: none; padding-top: 112px; }
.page-view.active { display: block; }

/* Footer */
footer { background: var(--wu-blue); color: rgba(255,255,255,0.85); padding: 44px 40px 32px; }
.footer-top {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 28px; padding-bottom: 28px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  gap: 36px; flex-wrap: wrap;
}
.footer-logo         { font-weight: 700; font-size: 19px; letter-spacing: -0.3px; color: #fff; }
.footer-logo span    { font-weight: 300; color: rgba(255,255,255,0.65); }
.footer-tagline      { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 13px; color: rgba(255,255,255,0.45); margin-top: 5px; }
.footer-col-label    { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.4); font-weight: 500; margin-bottom: 9px; }
.footer-col-content  { font-size: 12px; color: rgba(255,255,255,0.65); line-height: 1.9; font-family: 'IBM Plex Mono', monospace; }
.footer-bottom       { display: flex; justify-content: space-between; align-items: center; font-size: 11px; color: rgba(255,255,255,0.3); flex-wrap: wrap; gap: 8px; }
.footer-wu-link      { color: rgba(255,255,255,0.45); text-decoration: none; display: flex; align-items: center; gap: 5px; transition: color 0.2s; }
.footer-wu-link:hover { color: rgba(255,255,255,0.8); }


/* ─────────────────────────────────────────────
   4. HOME PAGE — ticker, hero, overview strip
   ───────────────────────────────────────────── */

/* Ticker */
.ticker-bar   { background: var(--surface); border-bottom: 1px solid var(--border); padding: 9px 0; overflow: hidden; white-space: nowrap; }
.ticker-inner { display: inline-flex; gap: 52px; animation: tickerScroll 35s linear infinite; }
.ticker-item  { display: flex; align-items: center; gap: 8px; font-size: 11px; }
.ticker-dot   { width: 5px; height: 5px; border-radius: 50%; background: var(--wu-blue); opacity: 0.4; }
.ticker-model { color: var(--text-muted); }
.ticker-score { font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 12px; color: var(--wu-blue); }
.ticker-cat   { color: var(--text-dim); font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; }
@keyframes tickerScroll { 0% { transform: translateX(0); } 100% { transform: translateX(-50%); } }

/* Hero */
.hero {
  min-height: auto;
  display: flex; flex-direction: column; justify-content: flex-start;
  position: relative; overflow: hidden; background: var(--surface);
}
.hero-bg-stripe {
  position: absolute; top: 0; right: 0; width: 40%; bottom: 0;
  background: var(--wu-light);
  clip-path: polygon(7% 0, 100% 0, 100% 100%, 0% 100%);
}
.hero-bg-dots {
  position: absolute; top: 0; right: 0; width: 40%; bottom: 0;
  background-image: radial-gradient(circle, rgba(0,60,120,0.11) 1px, transparent 1px);
  background-size: 26px 26px;
  clip-path: polygon(7% 0, 100% 0, 100% 100%, 0% 100%);
}
.hero-content { position: relative; z-index: 2; padding: 52px 40px 64px; max-width: 860px; }

.version-badge {
  display: inline-flex; align-items: center; gap: 7px;
  background: var(--wu-light); border: 1px solid rgba(0,60,120,0.2);
  padding: 7px 18px; font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--wu-blue); font-weight: 600; margin-bottom: 22px;
  opacity: 0; animation: fadeUp 0.7s ease forwards 0.05s;
}
.version-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--wu-blue); animation: pulse 2.5s ease-in-out infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.35; transform: scale(0.7); } }

.hero-affil      { display: flex; align-items: center; gap: 11px; margin-bottom: 28px; opacity: 0; animation: fadeUp 0.7s ease forwards 0.1s; }
.hero-affil-line { width: 28px; height: 2px; background: var(--wu-blue); }
.hero-affil-text { font-size: 11px; letter-spacing: 0.13em; text-transform: uppercase; color: var(--wu-blue); font-weight: 600; }
.hero-tag        { font-family: 'Source Serif 4', serif; font-size: 15px; color: var(--text-muted); font-style: italic; margin-bottom: 16px; opacity: 0; animation: fadeUp 0.7s ease forwards 0.15s; }

.hero h1 {
  font-weight: 700; font-size: clamp(40px, 6vw, 80px); line-height: 1.0;
  letter-spacing: -2px; color: var(--wu-blue); margin-bottom: 10px;
  opacity: 0; animation: fadeUp 0.7s ease forwards 0.25s;
}
.hero h1 .line2 { display: block; font-weight: 300; color: var(--text); letter-spacing: -1px; }

.hero-meta      { display: flex; align-items: center; gap: 36px; margin-top: 36px; opacity: 0; animation: fadeUp 0.7s ease forwards 0.4s; flex-wrap: wrap; }
.hero-stat      { display: flex; flex-direction: column; gap: 3px; }
.hero-stat-num  { font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 28px; color: var(--wu-blue); letter-spacing: -1px; }
.hero-stat-label { font-size: 10px; letter-spacing: 0.13em; text-transform: uppercase; color: var(--text-muted); font-weight: 500; }
.hero-divider   { width: 1px; height: 40px; background: var(--border); }
.hero-desc      { max-width: 400px; font-family: 'Source Serif 4', serif; font-size: 15px; line-height: 1.75; color: var(--text-muted); }
.hero-cta       { margin-top: 40px; opacity: 0; animation: fadeUp 0.7s ease forwards 0.55s; display: flex; gap: 12px; align-items: center; }

@keyframes fadeUp { from { opacity: 0; transform: translateY(18px); } to { opacity: 1; transform: translateY(0); } }

/* Overview strip */
.overview-strip {
  background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue);
  padding: 18px 32px; margin-bottom: 28px;
  display: grid; grid-template-columns: 1fr 1fr 1fr 1fr; gap: 24px;
  position: relative;
}
.ov-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--text-muted); margin-bottom: 7px; font-weight: 500; }
.ov-val   { font-weight: 700; font-size: 21px; letter-spacing: -0.4px; color: var(--wu-blue); }
.ov-sub   { font-size: 11px; color: var(--text-muted); margin-top: 3px; font-family: 'Source Serif 4', serif; font-style: italic; }


/* ─────────────────────────────────────────────
   5. LEADERBOARD
   ───────────────────────────────────────────── */

/* Main table */
.leaderboard-container { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); overflow: hidden; box-shadow: 0 2px 16px rgba(0,60,120,0.06); }
.leaderboard-header    { display: grid; grid-template-columns: 56px 200px 110px 1fr 1fr 1fr 80px; padding: 11px 20px; background: var(--wu-blue); gap: 6px; }
.lh-cell { font-size: 10px; letter-spacing: 0.13em; text-transform: uppercase; color: rgba(255,255,255,0.65); text-align: right; font-weight: 500; }
.lh-cell:nth-child(1), .lh-cell:nth-child(2) { text-align: left; color: rgba(255,255,255,0.9); }
.lh-cell:nth-child(3) { text-align: right; }
.lh-cell:nth-child(4), .lh-cell:nth-child(5), .lh-cell:nth-child(6), .lh-cell:nth-child(7) { text-align: center; }

.leaderboard-row {
  display: grid; grid-template-columns: 56px 200px 110px 1fr 1fr 1fr 80px;
  padding: 15px 20px; gap: 6px; align-items: center;
  border-bottom: 1px solid var(--border); transition: background 0.15s;
  cursor: default; position: relative;
}
.leaderboard-row::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: transparent; transition: background 0.2s; }
.leaderboard-row:hover           { background: var(--wu-light); }
.leaderboard-row:hover::before   { background: var(--wu-blue); }
.leaderboard-row:last-child      { border-bottom: none; }
.leaderboard-row.rank-1          { background: rgba(180,83,9,0.04); }
.leaderboard-row.rank-1::before  { background: var(--gold); }
.leaderboard-row.rank-2          { background: rgba(71,85,105,0.03); }
.leaderboard-row.rank-2::before  { background: var(--silver); }
.leaderboard-row.rank-3          { background: rgba(124,74,30,0.03); }
.leaderboard-row.rank-3::before  { background: var(--bronze); }

.rank-badge { font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 14px; color: var(--text-muted); width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; }
.rank-1 .rank-badge { color: var(--gold); }
.rank-2 .rank-badge { color: var(--silver); }
.rank-3 .rank-badge { color: var(--bronze); }

.model-info { display: flex; flex-direction: column; gap: 2px; }
.model-name { font-weight: 600; font-size: 14px; color: var(--text); letter-spacing: -0.2px; display: flex; align-items: center; gap: 7px; }
.model-org  { font-size: 10px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text-dim); }
.score-cell { text-align: right; }
.score-main { font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 18px; letter-spacing: -0.5px; }
.score-bar-wrapper { margin-top: 5px; height: 2px; background: var(--border); overflow: hidden; }
.score-bar-fill    { height: 100%; transition: width 1s ease; }
.score-cat  { text-align: center; font-family: 'IBM Plex Mono', monospace; font-weight: 400; font-size: 12px; color: var(--text-muted); }
.winner-chip { background: rgba(180,83,9,0.1); border: 1px solid rgba(180,83,9,0.2); color: var(--gold); font-size: 9px; letter-spacing: 0.07em; text-transform: uppercase; padding: 2px 6px; font-family: 'IBM Plex Sans', sans-serif; font-weight: 600; }

/* Full leaderboard page — 8-column grid */
#full-leaderboard .leaderboard-header,
#leaderboard-rows .leaderboard-row {
  grid-template-columns: 44px minmax(160px, 260px) 130px 88px 88px 88px 88px 60px;
  gap: 0;
}
#full-leaderboard .lh-cell               { text-align: center; color: rgba(255,255,255,0.7); padding: 11px 8px; }
#full-leaderboard .lh-cell:nth-child(1)  { text-align: left; padding-left: 20px; }
#full-leaderboard .lh-cell:nth-child(2)  { text-align: left; color: rgba(255,255,255,0.9); }
#full-leaderboard .lh-cell:nth-child(3)  { text-align: right; padding-right: 12px; }
#full-leaderboard .lh-cell.lh-cell-active { color: #fff; font-weight: 700; }
#leaderboard-rows .rank-badge            { justify-self: center; }
#leaderboard-rows .score-cell            { text-align: right; }
#leaderboard-rows .score-cat             { text-align: center; font-size: 13px; }

/* Score breakdown bar charts */
.bd-card       { background: var(--surface); border: 1px solid var(--border); border-top: 2px solid var(--wu-blue); padding: 20px 24px 16px; }
.bd-card-head  { margin-bottom: 16px; }
.bd-card-title { font-weight: 700; font-size: 15px; color: var(--wu-blue); letter-spacing: -0.2px; }
.bd-card-sub   { font-size: 11.5px; color: var(--text-dim); font-family: 'Source Serif 4', serif; font-style: italic; margin-top: 3px; }
.bd-row {
  display: grid; grid-template-columns: 150px 1fr 58px;
  align-items: center; gap: 14px; padding: 6px 0;
  border-bottom: 1px solid var(--border);
}
.bd-row-last { border-bottom: none; }
.bd-label    { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--text-muted); text-align: right; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.bd-bar-wrap { height: 26px; background: var(--surface2); border-radius: 2px; overflow: hidden; }
.bd-bar-fill { height: 100%; border-radius: 2px; width: 0%; transition: width 0.9s cubic-bezier(0.4,0,0.2,1) var(--delay, 0s); }
.bd-val      { font-family: 'IBM Plex Mono', monospace; font-size: 13px; font-weight: 700; text-align: right; }

/* Heatmap */
.heatmap-wrap { border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); overflow-x: auto; overflow-y: visible; -webkit-overflow-scrolling: touch; box-shadow: 0 2px 16px rgba(0,60,120,0.05); }
.heatmap-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 12px; }
.heatmap-table th { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; background: var(--wu-blue); color: rgba(255,255,255,0.8); padding: 10px 14px; text-align: left; font-weight: 500; }
.heatmap-table th:not(:first-child) { text-align: center; }
.heatmap-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); background: var(--surface); }
.heatmap-table tbody tr:last-child td { border-bottom: none; }
.heatmap-table tr:hover td { background: var(--wu-light); }
.hm-model { font-weight: 600; font-size: 13px; color: var(--text); }

/* Sticky first column */
.heatmap-table thead tr:first-child th:first-child {
  position: sticky; left: 0; z-index: 3;
  background: var(--wu-blue);
  border-right: 2px solid rgba(255,255,255,0.25);
}
.heatmap-table tbody tr td:first-child {
  position: sticky; left: 0; z-index: 2;
  width: 140px; min-width: 140px; max-width: 140px;
  background: var(--surface);
  border-right: 2px solid var(--border);
  box-shadow: 2px 0 8px -2px rgba(0,60,120,0.12);
}
.heatmap-table tbody tr:hover td:first-child { background: var(--wu-light); }

/* Sticky score legend bar */
.heatmap-legend-foot { display: none; } /* hidden on desktop; tfoot replaced by sticky bar */
.heatmap-section-wrap { position: relative; }
.heatmap-legend-sticky {
  display: flex; align-items: center; gap: 14px; padding: 10px 16px;
  background: var(--surface2); border: 1px solid var(--border); border-top: 2px solid var(--border);
  position: sticky; bottom: 0; z-index: 10;
  box-shadow: 0 -2px 12px rgba(0,60,120,0.08);
}
.heatmap-legend-sticky-label { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); font-weight: 600; white-space: nowrap; flex-shrink: 0; }
.heatmap-legend-sticky-pills { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.heatmap-legend-sticky-pills .score-pill { font-size: 10px; }

/* Column section dividers */
.heatmap-table tbody tr td:nth-child(2),
.heatmap-table tbody tr td:nth-child(5),
.heatmap-table tbody tr td:nth-child(8),
.heatmap-table tbody tr td:nth-child(12),
.heatmap-table tbody tr td:nth-child(16) { border-right: 3px solid #7a90aa; }

.heatmap-table thead tr:first-child th:nth-child(2),
.heatmap-table thead tr:first-child th:nth-child(3),
.heatmap-table thead tr:first-child th:nth-child(4),
.heatmap-table thead tr:first-child th:nth-child(5),
.heatmap-table thead tr:first-child th:nth-child(6) { border-right: 3px solid #4a6a8a; }

.heatmap-table thead tr:last-child th:nth-child(1),
.heatmap-table thead tr:last-child th:nth-child(4),
.heatmap-table thead tr:last-child th:nth-child(7),
.heatmap-table thead tr:last-child th:nth-child(11),
.heatmap-table thead tr:last-child th:nth-child(15) { border-right: 3px solid #4a6a8a; }

/* Heatmap grouped header rows */
.hm-th-group { text-align: center; background: #1a4f8a; }
.hm-th-sub   { background: #1a4f8a; font-size: 9px; font-weight: 400; }

/* Calc tooltip on heatmap header cells */
.hm-calc-tip { cursor: help; position: relative; }
.hm-calc-tip::after { content: 'ⓘ'; font-size: 8px; opacity: 0.6; margin-left: 3px; vertical-align: super; }
.hm-calc-tip:hover  { background: #2a6496 !important; color: #fff; }
.hm-calc-popup {
  display: none; position: absolute; top: calc(100% + 6px); left: 50%; transform: translateX(-50%);
  width: 300px; background: #1a1f2e; color: rgba(255,255,255,0.88);
  font-family: 'Source Serif 4', serif; font-size: 11.5px; font-weight: 400; line-height: 1.65;
  padding: 11px 14px; border-radius: 4px; box-shadow: 0 6px 24px rgba(0,0,0,0.35);
  z-index: 999; text-transform: none; letter-spacing: normal; text-align: left; pointer-events: none;
}
.hm-calc-popup code { font-family: 'IBM Plex Mono', monospace; font-size: 10.5px; background: rgba(255,255,255,0.12); padding: 1px 4px; border-radius: 2px; color: #93c5fd; }
.hm-calc-tip:hover .hm-calc-popup { display: block; }

/* Score pills */
.hm-cell    { text-align: center; }
.score-pill { display: inline-block; padding: 3px 9px; min-width: 54px; text-align: center; font-family: 'IBM Plex Mono', monospace; font-weight: 500; font-size: 11px; }
.s-90plus  { background: #d1fae5; color: #065f46; }
.s-75plus  { background: #dbeafe; color: #1e40af; }
.s-60plus  { background: #ede9fe; color: #4c1d95; }
.s-50plus  { background: #fef3c7; color: #78350f; }
.s-below50 { background: #fee2e2; color: #991b1b; }

/* Interactive chart / radar */
.compare-bar       { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; padding: 14px 20px; background: var(--surface2); border-bottom: 1px solid var(--border); }
.compare-bar-label { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); font-weight: 600; flex-shrink: 0; }
.model-checkbox    { display: flex; align-items: center; gap: 6px; cursor: pointer; user-select: none; }
.model-checkbox input { display: none; }
.model-checkbox-dot {
  width: 12px; height: 12px; border-radius: 2px; border: 1.5px solid var(--border2);
  display: flex; align-items: center; justify-content: center; transition: all 0.15s; flex-shrink: 0;
}
.model-checkbox input:checked + .model-checkbox-dot            { border-color: currentColor; }
.model-checkbox input:checked + .model-checkbox-dot::after     { content: '✓'; font-size: 8px; font-weight: 700; }
.model-checkbox span       { font-size: 11px; color: var(--text-muted); font-family: 'IBM Plex Mono', monospace; }
.model-checkbox:hover span { color: var(--text); }

.radar-wrap      { display: flex; gap: 40px; align-items: flex-start; flex-wrap: wrap; }
.radar-svg-wrap  { flex-shrink: 0; }
.radar-legend    { display: flex; flex-direction: column; gap: 10px; padding-top: 16px; }
.legend-item     { display: flex; align-items: center; gap: 9px; cursor: pointer; padding: 4px 0; }
.legend-dot      { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }
.legend-name     { font-size: 12px; color: var(--text-muted); font-family: 'IBM Plex Mono', monospace; }
.legend-score    { font-family: 'IBM Plex Mono', monospace; font-weight: 600; font-size: 13px; margin-left: auto; padding-left: 16px; }


/* ─────────────────────────────────────────────
   6. DASHBOARD
   ───────────────────────────────────────────── */

/* KPI cards */
.dashboard-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 28px; }
.kpi-card       { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); padding: 20px 22px; transition: box-shadow 0.2s; }
.kpi-card:hover { box-shadow: 0 4px 16px rgba(0,60,120,0.1); }
.kpi-label      { font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-muted); font-weight: 600; margin-bottom: 8px; }
.kpi-value      { font-family: 'IBM Plex Mono', monospace; font-size: 28px; font-weight: 700; color: var(--wu-blue); letter-spacing: -1px; line-height: 1.1; }
.kpi-sub        { font-size: 11px; color: var(--text-muted); margin-top: 4px; font-family: 'Source Serif 4', serif; font-style: italic; }
.kpi-delta      { display: inline-flex; align-items: center; gap: 4px; font-size: 11px; font-weight: 600; padding: 2px 7px; margin-top: 6px; }
.kpi-up         { background: #d1fae5; color: #065f46; }
.kpi-down       { background: #fee2e2; color: #991b1b; }
.kpi-card-v2    { display: flex; flex-direction: column; }
.kpi-gauge-wrap { height: 4px; background: var(--border); border-radius: 2px; overflow: hidden; margin: 8px 0 6px; }
.kpi-gauge-fill { height: 100%; border-radius: 2px; width: 0%; transition: width 1.2s cubic-bezier(0.4,0,0.2,1) 0.3s; }
.kpi-badge      { display: inline-block; font-size: 9px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 2px 8px; margin-top: 6px; align-self: flex-start; }

/* Layout grids */
.dashboard-2col      { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 28px; }
.dashboard-3col      { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 28px; }
.dashboard-3col-single { grid-template-columns: minmax(0, 480px); justify-content: center; }
.dash-card           { background: var(--surface); border: 1px solid var(--border); border-top: 2px solid var(--wu-blue); padding: 22px; }
.dash-card-last      { margin-bottom: 28px; }
.dash-card-title     { font-weight: 600; font-size: 13px; color: var(--wu-blue); margin-bottom: 3px; }
.dash-card-sub       { font-size: 11px; color: var(--text-muted); margin-bottom: 18px; font-family: 'Source Serif 4', serif; font-style: italic; }
.dash-card-question-distribution { width: 100%; }

/* Holistic matrix caption */
#hm-caption { font-size: 11px; color: var(--text-muted); font-style: italic; font-family: 'Source Serif 4', serif; margin-bottom: 10px; padding: 0 4px; }

/* Full-width lim-item spanning both columns (e.g. item 07) */
.lim-item-full { grid-column: 1 / -1; border-right: none !important; padding-left: 0 !important; }

/* Token bar fills */
.tok-bar-fill { height: 100%; transition: width 0.9s cubic-bezier(0.4,0,0.2,1) var(--tok-delay, 0s); }

/* Heatmap filter bar */
.hm-filter-bar        { display: flex; align-items: center; gap: 8px; padding: 14px 0 10px; flex-wrap: wrap; margin-top: 28px; }

/* Null pill for missing education/category combinations */
.score-pill.hm-null   { background: var(--surface2); color: var(--text-dim); font-size: 10px; }

/* Dashboard spacing helpers */
.dash-section-mt    { margin-top: 48px; }
.dashboard-2col-mb  { margin-bottom: 20px; }
.dashboard-full     { margin-bottom: 28px; } /* full-width chart card wrapper */
.dash-section       { padding: 72px 40px; max-width: 1400px; margin: 0 auto; box-sizing: border-box; display: block; }

/* Ensure dashboard section matches all other sections exactly */
#page-dashboard > section { padding: 72px 40px; max-width: 1400px; margin: 0 auto; box-sizing: border-box; }

.placeholder-card  { background: var(--surface); border: 1.5px dashed var(--border2); padding: 28px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; min-height: 180px; gap: 12px; }
.placeholder-icon  { font-size: 28px; opacity: 0.4; }
.placeholder-label { font-size: 12px; color: var(--text-dim); font-style: italic; font-family: 'Source Serif 4', serif; }
.placeholder-hint  { font-size: 10px; color: var(--text-dim); letter-spacing: 0.08em; text-transform: uppercase; }

/* Mini table */
.mini-table    { width: 100%; border-collapse: collapse; font-size: 12px; }
.mini-table th { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-muted); padding: 7px 10px; border-bottom: 2px solid var(--border); text-align: left; font-weight: 500; }
.mini-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); }
.mini-table tr:last-child td  { border-bottom: none; }
.mini-table tr:hover td       { background: var(--wu-light); }
.difficulty-bar { display: flex; gap: 8px; margin-top: 12px; }
.diff-seg       { flex: 1; height: 6px; border-radius: 2px; }

/* Framework bar chart */
.fw-chart { position: relative; margin-top: 16px; padding-bottom: 24px; }
.fw-row   { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; position: relative; z-index: 1; }
.fw-label { width: 100px; flex-shrink: 0; font-size: 10.5px; font-family: 'IBM Plex Mono', monospace; color: var(--text-muted); text-align: right; line-height: 1.3; }
.fw-track { flex: 1; height: 28px; background: var(--surface2); position: relative; overflow: hidden; }
.fw-fill  { height: 100%; width: var(--fw-w, 0%); display: flex; align-items: center; padding-right: 8px; justify-content: flex-end; font-family: 'IBM Plex Mono', monospace; font-weight: 700; font-size: 11px; transition: width 1.1s cubic-bezier(0.4,0,0.2,1) 0.1s; }
.fw-gridlines         { position: absolute; inset: 0; pointer-events: none; }
.fw-gridlines > div   { position: absolute; top: 0; bottom: 24px; width: 1px; background: var(--border); transform: translateX(-50%); }
.fw-gridlines > div span { position: absolute; bottom: -20px; left: 50%; transform: translateX(-50%); font-size: 9px; font-family: 'IBM Plex Mono', monospace; color: var(--text-dim); white-space: nowrap; }

/* Token dual bar chart */
.token-chart       { margin-top: 12px; display: flex; flex-direction: column; gap: 11px; }
.token-legend      { display: flex; gap: 16px; margin-bottom: 4px; }
.token-legend-item { display: flex; align-items: center; gap: 5px; font-size: 10px; color: var(--text-muted); letter-spacing: 0.06em; text-transform: uppercase; font-weight: 600; }
.token-legend-dot  { width: 10px; height: 10px; border-radius: 2px; flex-shrink: 0; }
.token-row         { display: flex; align-items: center; gap: 10px; }
.token-label       { width: 95px; flex-shrink: 0; font-size: 11px; font-family: 'IBM Plex Mono', monospace; color: var(--text-muted); text-align: right; }
.token-bars        { flex: 1; display: flex; flex-direction: column; gap: 2px; }
.token-bar-in      { height: 5px; border-radius: 1px; background: var(--border2); width: var(--tw, 0%); transition: width 1s cubic-bezier(0.4,0,0.2,1) 0.1s; }
.token-bar-out     { height: 24px; border-radius: 1px; background: linear-gradient(90deg, var(--wu-blue), var(--wu-blue2)); width: var(--tw, 0%); display: flex; align-items: center; justify-content: flex-end; padding-right: 5px; transition: width 1s cubic-bezier(0.4,0,0.2,1) 0.25s; }
.token-bar-out span { font-family: 'IBM Plex Mono', monospace; font-size: 9px; font-weight: 700; color: #fff; white-space: nowrap; }

/* Scatter chart sizing */
#costScatterWrap, #speedScatterWrap { height: 420px; }

.chart-tip {
  position: absolute;
  pointer-events: none;
  display: none;
  background: #1a1f2e;
  color: #fff;
  border-radius: 4px;
  padding: 10px 14px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 12px;
  line-height: 1.6;
  min-width: 180px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
  z-index: 100;
  border-top: 3px solid #fff;
}
.calib-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 4px 10px;
  border-radius: 3px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s;
}
.calib-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Donut chart legend abbreviation */
.dist-name-abbr { display: none; }
.dist-name-full { display: inline; }


/* ─────────────────────────────────────────────
   7. METHODOLOGY
   ───────────────────────────────────────────── */
.meth-hero    { background: var(--wu-blue); padding: 52px 40px; margin-bottom: 0; }
.meth-hero h2 { font-size: 32px; font-weight: 700; color: #fff; letter-spacing: -1px; margin-bottom: 10px; }
.meth-hero p  { font-family: 'Source Serif 4', serif; font-size: 15px; color: rgba(255,255,255,0.7); max-width: 600px; line-height: 1.7; }

.mobile-page-hero    { display: none; background: var(--wu-blue); padding: 52px 40px; margin-bottom: 0; }
.mobile-page-hero h2 { font-size: 32px; font-weight: 700; color: #fff; letter-spacing: -1px; margin-bottom: 10px; }

.meth-nav { display: flex; background: var(--surface); border-bottom: 1px solid var(--border); padding: 0 40px; overflow-x: auto; }
.meth-nav-tab {
  padding: 14px 22px; font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--text-muted); cursor: pointer; border-bottom: 2px solid transparent;
  margin-bottom: -1px; transition: all 0.2s; white-space: nowrap;
  background: none; border-left: none; border-right: none; border-top: none;
  font-family: 'IBM Plex Sans', sans-serif; font-weight: 500;
}
.meth-nav-tab:hover  { color: var(--text); }
.meth-nav-tab.active { color: var(--wu-blue); border-bottom-color: var(--wu-blue); }
.meth-panel        { display: none; }
.meth-panel.active { display: block; }
.meth-section  { max-width: 1400px; margin: 0 auto; padding: 52px 40px; }
.meth-two-col  { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin-top: 28px; }
.meth-card     { background: var(--surface); border: 1px solid var(--border); padding: 28px; }
.meth-card-icon  { font-size: 22px; margin-bottom: 14px; }
.meth-card-title { font-weight: 600; font-size: 14px; color: var(--wu-blue); margin-bottom: 9px; }
.meth-card-body  { font-family: 'Source Serif 4', serif; font-size: 13px; color: var(--text-muted); line-height: 1.78; }

.meth-step     { display: flex; gap: 20px; margin-bottom: 28px; }
.meth-step-num { width: 36px; height: 36px; background: var(--wu-blue); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 14px; flex-shrink: 0; font-family: 'IBM Plex Mono', monospace; }
.meth-step-body h4 { font-weight: 600; font-size: 14px; color: var(--wu-blue); margin-bottom: 6px; }
.meth-step-body p  { font-family: 'Source Serif 4', serif; font-size: 13px; color: var(--text-muted); line-height: 1.75; }

.meth-table    { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 20px; }
.meth-table th { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; background: var(--wu-blue); color: rgba(255,255,255,0.8); padding: 10px 16px; text-align: left; font-weight: 500; }
.meth-table td { padding: 11px 16px; border-bottom: 1px solid var(--border); }
.meth-table tr:last-child td { border-bottom: none; }
.meth-table tr:hover td      { background: var(--wu-light); }
.meth-table td:first-child   { font-weight: 500; color: var(--wu-blue); }
.meth-table.data-table { table-layout: fixed; }
.meth-table.data-table th:nth-child(2),
.meth-table.data-table th:nth-child(3) { text-align: right; width: 72px; }
.meth-table.data-table td:nth-child(2),
.meth-table.data-table td:nth-child(3) { text-align: right; font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-muted); font-weight: 500; }

.meth-tag   { display: inline-block; padding: 2px 8px; font-size: 10px; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; font-family: 'IBM Plex Sans', sans-serif; }
.tag-green  { background: #d1fae5; color: #065f46; }
.tag-blue   { background: #dbeafe; color: #1e40af; }
.tag-amber  { background: #fef3c7; color: #78350f; }
.tag-red    { background: #fee2e2; color: #991b1b; }
.meth-callout { background: var(--wu-light); border-left: 4px solid var(--wu-blue); padding: 18px 22px; margin: 20px 0; font-family: 'Source Serif 4', serif; font-size: 14px; color: var(--text); line-height: 1.7; }
.formula-block { background: var(--surface2); border: 1px solid var(--border); padding: 18px 22px; font-family: 'IBM Plex Mono', monospace; font-size: 13px; color: var(--wu-blue); margin: 16px 0; line-height: 1.9; white-space: pre; overflow-x: auto; }

/* Pipeline diagram */
.pipeline-diagram { display: flex; align-items: stretch; gap: 0; margin: 28px 0 8px; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.pl-arrow { display: flex; align-items: center; justify-content: center; font-size: 20px; color: var(--border2); padding: 0 4px; flex-shrink: 0; align-self: center; }
.pl-layer { flex: 1; min-width: 140px; display: flex; flex-direction: column; border-radius: 0; overflow: hidden; border: 1.5px solid transparent; position: relative; }
.pl-layer-blue   { background: #e8f0fb; border-color: #003c78; }
.pl-layer-gray   { background: #f0f2f6; border-color: #8693a8; }
.pl-layer-purple { background: #ede9fe; border-color: #6d28d9; }
.pl-layer-orange { background: #fef3c7; border-color: #166534; }
.pl-layer-green  { background: #d1fae5; border-color: #065f46; }
.pl-layer::before { content: ''; display: block; height: 4px; width: 100%; }
.pl-layer-blue::before   { background: #003c78; }
.pl-layer-gray::before   { background: #8693a8; }
.pl-layer-purple::before { background: #6d28d9; }
.pl-layer-orange::before { background: #166534; }
.pl-layer-green::before  { background: #065f46; }
.pl-num        { font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 700; letter-spacing: 0.15em; padding: 10px 14px 3px; opacity: 0.5; }
.pl-icon       { font-size: 24px; padding: 0 14px 8px; line-height: 1; }
.pl-title      { font-weight: 700; font-size: 14px; letter-spacing: -0.2px; color: var(--text); padding: 0 14px 10px; line-height: 1.3; }
.pl-items      { display: flex; flex-direction: column; gap: 5px; padding: 0 14px 16px; flex: 1; }
.pl-item       { font-size: 12px; color: var(--text-muted); font-family: 'Source Serif 4', serif; line-height: 1.5; padding: 4px 8px; background: rgba(255,255,255,0.55); border-radius: 2px; }
.pl-item-sc    { border-left: 2px solid #003c78; }
.pl-item-ot    { border-left: 2px solid #6d28d9; }
.pl-item-num   { border-left: 2px solid #166534; }
.pl-badge      { margin: 0 14px 14px; padding: 4px 9px; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; background: rgba(109,40,217,0.12); color: #5b21b6; align-self: flex-start; border-radius: 2px; }
.pl-loop-label { font-size: 12px; color: var(--text-dim); font-family: 'IBM Plex Mono', monospace; letter-spacing: 0.04em; text-align: center; padding: 10px 0 32px; border-top: 1px dashed var(--border); margin-top: 0; }

/* Limitations grid */
.lim-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0; border-top: 1px solid var(--border); }
.lim-item { display: flex; gap: 20px; padding: 24px 28px 24px 0; border-bottom: 1px solid var(--border); border-right: 1px solid var(--border); }
.lim-item:nth-child(even) { border-right: none; padding-left: 28px; padding-right: 0; }
.lim-num   { font-family: 'IBM Plex Mono', monospace; font-size: 11px; font-weight: 600; color: var(--wu-blue); opacity: 0.45; letter-spacing: 0.1em; flex-shrink: 0; padding-top: 2px; min-width: 24px; }
.lim-body  { flex: 1; }
.lim-title { font-weight: 700; font-size: 14px; color: var(--wu-blue); margin-bottom: 8px; letter-spacing: -0.2px; }
.lim-text  { font-family: 'Source Serif 4', serif; font-size: 13px; color: var(--text-muted); line-height: 1.75; }

/* Reference / citation box */
.reference-box {
  margin-top: 40px; max-width: 860px; width: 100%;
  background: rgba(248,250,252,0.98);
  border: 1px solid rgba(0,60,120,0.18); border-radius: 16px;
  box-shadow: 0 10px 26px rgba(0,60,120,0.08); overflow: hidden;
}
.reference-box-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: 12px; padding: 12px 16px 8px;
  border-bottom: 1px solid rgba(0,60,120,0.08);
}
.reference-box-kicker { font-size: 9px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-muted); font-weight: 600; margin-bottom: 4px; }
.reference-box-title  { font-weight: 600; font-size: 13px; color: var(--wu-blue); letter-spacing: -0.1px; margin-bottom: 2px; }
.reference-box-sub    { font-family: 'Source Serif 4', serif; font-size: 11.5px; color: var(--text-muted); line-height: 1.55; max-width: 640px; }
.reference-box-body   { padding: 12px 16px 14px; display: grid; grid-template-columns: minmax(0, 1fr) minmax(280px, 380px); gap: 12px; }
.reference-card    { background: rgba(248,250,252,0.78); border: 1px solid rgba(0,60,120,0.08); padding: 11px 12px; }
.reference-label   { font-size: 9px; letter-spacing: 0.10em; text-transform: uppercase; color: var(--text-muted); font-weight: 600; margin-bottom: 6px; }
.reference-citation { font-family: 'Source Serif 4', serif; font-size: 12.5px; line-height: 1.65; color: var(--text); }
.reference-note    { margin-top: 8px; font-size: 10.5px; color: var(--text-muted); line-height: 1.55; }
.reference-bibtex {
  display: block; margin: 0; padding: 20px 24px;
  background: #f8fafc; color: #203248;
  font-family: 'IBM Plex Mono', monospace; font-size: 12.2px; line-height: 1.65; font-weight: 500;
  white-space: pre-wrap; word-break: break-word; overflow-wrap: anywhere; overflow-x: auto; tab-size: 2; border: 0;
}


/* ─────────────────────────────────────────────
   8. ABOUT
   ───────────────────────────────────────────── */

/* Person cards */
.about-team-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--wu-blue);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.team-grid { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; margin-bottom: 48px; }
.person-photo { overflow: hidden; aspect-ratio: 3/4; background: #e8edf4; }
.person-photo img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: top;
  display: block; filter: grayscale(100%); transition: filter 0.3s;
}
.person-photo img:hover { filter: grayscale(0%); }
.about-team-info { padding: 24px 22px 28px; min-height: 246px; }
.about-person-role {
  font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--wu-blue); font-weight: 600; margin-bottom: 7px;
}
.desktop-role-placeholder { visibility: hidden; }
.about-person-name {
  font-family: 'IBM Plex Sans', sans-serif; font-weight: 700; font-size: 16px;
  color: var(--text); letter-spacing: -0.3px; margin-bottom: 10px; line-height: 1.3; margin-top: 2px;
}
.about-person-bio { font-family: 'Source Serif 4', serif; font-size: 13px; color: var(--text-muted); line-height: 1.75; }
.about-team-divider { border: none; }
#page-about section { padding-top: 52px; }
.person-info  { display: flex; flex-direction: column; flex: 1; }
.linkedin-btn {
  display: inline-flex; align-items: center; justify-content: center;
  margin-top: auto; padding: 7px; width: 32px; height: 32px;
  background: #0a66c2; color: #fff; text-decoration: none;
  border-radius: 3px; transition: background 0.15s, transform 0.1s;
  align-self: flex-start;
}
.linkedin-btn:hover  { background: #004182; }
.linkedin-btn:active { transform: scale(0.97); }
.linkedin-btn svg    { flex-shrink: 0; width: 16px; height: 16px; }

/* Desktop card alignment — consolidated from v21–v25 */
@media (min-width: 981px) {
  .team-grid,
  .about-grid {
    align-items: stretch;
  }
  .team-grid > .about-team-card {
    display: flex;
    flex-direction: column;
    min-height: 100%;
  }
  .team-grid > .about-team-card .about-team-info {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
    min-height: 260px;
  }
  .team-grid > .about-team-card .about-team-divider {
    margin-top: auto;
    margin-bottom: 18px;
  }
  /* .person-card variant (used in about-grid) */
  #page-about .team-grid .person-card {
    display: flex;
    flex-direction: column;
  }
  #page-about .team-grid .person-info {
    position: relative;
    display: block;
    padding-bottom: 92px;
    min-height: 270px;
  }
  #page-about .team-grid .person-info hr {
    position: absolute;
    left: 24px; right: 24px; bottom: 58px;
    margin: 0; border: none;
    border-top: 1px solid var(--border);
  }
  #page-about .team-grid .person-info .linkedin-btn {
    position: absolute;
    left: 24px; bottom: 18px;
    margin: 0;
  }
}

/* Mobile card layout: horizontal strip */
@media (max-width: 980px) {
  #page-about .desktop-name-spacer,
  #page-about .desktop-role-placeholder { display: none; height: 0; }
  #page-about .person-info.about-team-info { min-height: 0; }
  #page-about .person-info.about-team-info hr { margin-top: 18px; }
}

/* Affiliation link */
.affiliation-title-link {
  color: #0a4a8a;
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  display: inline-flex; align-items: center; gap: 6px;
}
.affiliation-title-link:hover,
.affiliation-title-link:focus { color: #083b6f; }
.affiliation-link-arrow { font-size: .95em; line-height: 1; font-weight: 700; }

/* Affiliation box */
#page-about .affiliation-box {
  background: var(--wu-light);
  border: 1px solid rgba(0,60,120,0.15);
  border-left: 4px solid var(--wu-blue);
  padding: 24px 28px;
  display: flex; flex-direction: column; gap: 18px; align-items: stretch;
}
#page-about .affiliation-box-label { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--wu-blue); font-weight: 600; }
#page-about .affiliation-entry     { display: grid; grid-template-columns: 152px minmax(0, 1fr); align-items: center; column-gap: 22px; }
#page-about .affiliation-logo-wrap {
  width: 152px; min-width: 152px; min-height: 62px;
  display: flex; align-items: center; justify-content: center;
  background: transparent; border: none; border-radius: 0; padding: 4px 0; box-shadow: none;
}
#page-about .affiliation-logo-wrap-wu  { height: 62px; }
#page-about .affiliation-logo-wrap-bsc { height: 62px; }
#page-about .affiliation-logo {
  display: block; width: auto; max-width: 128px; max-height: 40px;
  object-fit: contain; object-position: center; background: transparent; box-shadow: none;
}
#page-about .affiliation-logo-wu  { max-width: 124px; max-height: 34px; }
#page-about .affiliation-logo-bsc { max-width: 122px; max-height: 38px; }
#page-about .affiliation-content  { min-width: 0; }
#page-about .affiliation-address  { margin-top: 7px; font-size: 12px; line-height: 1.65; color: var(--text-muted); font-family: 'IBM Plex Mono', monospace; }
#page-about .affiliation-divider  { height: 1px; background: rgba(0,60,120,0.12); width: 100%; }
#page-about .affiliation-inst     { margin-top: 3px; font-size: 12.5px; font-family: 'Source Serif 4', serif; font-style: italic; color: var(--text-muted); line-height: 1.5; }

/* Old affil panel (still used on some pages) */
.affil-panel    { background: var(--wu-light); border: 1px solid rgba(0,60,120,0.15); border-left: 4px solid var(--wu-blue); padding: 26px 30px; display: flex; align-items: flex-start; gap: 24px; margin-top: 36px; }
.affil-wu-logo  { flex-shrink: 0; width: 52px; height: 52px; background: var(--wu-blue); display: flex; align-items: center; justify-content: center; color: #fff; font-weight: 700; font-size: 15px; }
.affil-label    { font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: var(--wu-blue); font-weight: 600; margin-bottom: 5px; }
.affil-name     { font-weight: 600; font-size: 15px; color: var(--text); margin-bottom: 2px; }
.affil-dept     { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 13px; color: var(--text-muted); margin-bottom: 7px; line-height: 1.5; }
.affil-addr     { font-size: 12px; color: var(--text-muted); line-height: 1.7; font-family: 'IBM Plex Mono', monospace; }
.affil-link     { display: inline-flex; align-items: center; gap: 5px; margin-top: 10px; color: var(--wu-blue); text-decoration: none; font-size: 12px; font-weight: 500; border-bottom: 1px solid transparent; transition: border-color 0.2s; }
.affil-link:hover { border-bottom-color: var(--wu-blue); }


/* ─────────────────────────────────────────────
   9. SHARED UI
   ───────────────────────────────────────────── */

/* Buttons */
.btn-primary { background: var(--wu-blue); color: #fff; border: none; padding: 11px 22px; font-family: 'IBM Plex Sans', sans-serif; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer; text-decoration: none; display: inline-block; transition: background 0.2s; }
.btn-primary:hover   { background: var(--wu-blue2); }
.btn-secondary { color: var(--wu-blue); border: 1.5px solid var(--wu-blue); padding: 10px 20px; font-family: 'IBM Plex Sans', sans-serif; font-size: 11px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer; text-decoration: none; display: inline-block; transition: all 0.2s; background: transparent; }
.btn-secondary:hover { background: var(--wu-light); }

/* Chart control bar */
.chart-controls { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; padding: 14px 0; margin-bottom: 20px; }
.ctrl-label { font-size: 10px; letter-spacing: 0.13em; text-transform: uppercase; color: var(--text-muted); font-weight: 600; }
.ctrl-btn   { padding: 6px 14px; background: transparent; border: 1.5px solid var(--border); font-size: 11px; color: var(--text-muted); cursor: pointer; font-family: 'IBM Plex Sans', sans-serif; font-weight: 500; transition: all 0.15s; letter-spacing: 0.04em; }
.ctrl-btn:hover  { border-color: var(--wu-blue); color: var(--wu-blue); }
.ctrl-btn.active { background: var(--wu-blue); color: #fff; border-color: var(--wu-blue); }

/* Sections */
section        { padding: 72px 40px; max-width: 1400px; margin: 0 auto; box-sizing: border-box; }
.full-sep      { border: none; border-top: 1px solid var(--border); margin: 0; }
.section-header { display: flex; align-items: baseline; gap: 14px; margin-bottom: 40px; padding-bottom: 16px; border-bottom: 2px solid var(--wu-blue); }
.section-num   { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--wu-blue); letter-spacing: 0.15em; opacity: 0.45; }
.section-title { font-weight: 700; font-size: 26px; letter-spacing: -0.7px; color: var(--wu-blue); }

/* Charts grid */
.charts-grid   { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.chart-card    { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); padding: 24px; }
.chart-title   { font-weight: 700; font-size: 14px; color: var(--wu-blue); margin-bottom: 3px; letter-spacing: -0.2px; }
.chart-subtitle { font-size: 11px; color: var(--text-muted); margin-bottom: 20px; font-family: 'Source Serif 4', serif; font-style: italic; line-height: 1.5; }
.bar-chart { display: flex; flex-direction: column; gap: 10px; }
.bar-row   { display: flex; align-items: center; gap: 10px; }
.bar-label { width: 135px; font-size: 11px; color: var(--text-muted); text-align: right; flex-shrink: 0; font-family: 'IBM Plex Mono', monospace; }
.bar-track { flex: 1; height: 22px; background: var(--surface2); border: 1px solid var(--border); position: relative; overflow: hidden; }
.bar-track::after { content: ''; position: absolute; left: 50%; top: 0; bottom: 0; width: 1px; background: rgba(0,60,120,0.12); pointer-events: none; }
.bar-fill  { position: absolute; left: 0; top: 0; bottom: 0; display: flex; align-items: center; padding-right: 8px; justify-content: flex-end; font-family: 'IBM Plex Mono', monospace; font-weight: 600; font-size: 11px; transition: width 1.2s cubic-bezier(0.4,0,0.2,1); }

/* Donut distribution chart */
.donut-row         { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; margin-top: 8px; }
.dist-legend-item  { display: flex; flex-direction: column; gap: 4px; }
.dist-legend-bar   { height: 3px; border-radius: 2px; transition: width 1.2s cubic-bezier(0.4,0,0.2,1) 0.2s; max-width: 100%; }
.dist-legend-row   { display: flex; align-items: center; gap: 7px; }
.dist-legend-dot   { width: 9px; height: 9px; border-radius: 2px; flex-shrink: 0; }
.dist-legend-name  { font-size: 12px; font-weight: 500; color: var(--text); flex: 1; }
.dist-legend-count { font-family: 'IBM Plex Mono', monospace; font-size: 13px; font-weight: 700; color: var(--text); margin-left: auto; }
.dist-legend-pct   { font-family: 'IBM Plex Mono', monospace; font-size: 10px; font-weight: 600; padding-left: 16px; letter-spacing: 0.03em; }
.donut-seg-hidden  { stroke-dasharray: 0 550 !important; }

/* Scroll animations */
.animate-on-scroll         { opacity: 0; transform: translateY(14px); transition: opacity 0.5s ease, transform 0.5s ease; }
.animate-on-scroll.visible { opacity: 1; transform: translateY(0); }

/* Model color utility classes */
.mc-gpt52    { color: #166534; }
.mc-sonnet   { color: #3b82f6; }
.mc-gpt5mini { color: #15803d; }
.mc-mistral  { color: #c2410c; }
.mc-gpt41mini { color: #4338ca; }
.mc-deepseek { color: #7c3aed; }
.mc-opus     { color: #1e40af; }


/* ─────────────────────────────────────────────
   10. MOBILE SYSTEM
   ───────────────────────────────────────────── */

/* Hide legacy sidebar elements */
.mobile-menu-btn,
.mobile-sidebar-overlay,
.mobile-sidebar { display: none !important; }

/* Mobile page label — desktop hidden */
.m-page-label { display: none; }

/* Bottom tab bar (mobile only) */
.m-tabs {
  display: none;
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 500;
  background: #fff;
  border-top: 2px solid var(--wu-blue);
  box-shadow: 0 -2px 16px rgba(0,60,120,0.10);
  min-height: 60px;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  align-items: stretch;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  will-change: transform;
}
.m-tab {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 3px; background: none; border: none; border-top: 3px solid transparent; margin-top: -2px;
  padding: 6px 2px 8px; font-family: 'IBM Plex Sans', sans-serif;
  font-size: 9px; font-weight: 600; letter-spacing: 0.05em; text-transform: uppercase;
  color: var(--text-dim); cursor: pointer;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
  -webkit-tap-highlight-color: transparent;
}
.m-tab:active { background: var(--wu-light); }
.m-tab.active { color: var(--wu-blue); border-top-color: var(--wu-blue); background: rgba(0,60,120,0.03); pointer-events: none; cursor: default; }
.m-tab svg    { width: 20px; height: 20px; flex-shrink: 0; }

/* Mobile leaderboard cards (hidden on desktop) */
#mLbCards,
#mLbCardsLeaderboard { display: none; }

.m-lb-card { background: var(--surface); border: 1px solid var(--border); border-left: 4px solid var(--border2); overflow: hidden; cursor: pointer; transition: background 0.15s; -webkit-tap-highlight-color: transparent; }
.m-lb-card.rank-1 { border-left-color: var(--gold); }
.m-lb-card.rank-2 { border-left-color: var(--silver); }
.m-lb-card.rank-3 { border-left-color: var(--bronze); }
.m-lb-card-summary { display: flex; align-items: center; padding: 14px; gap: 12px; }
.m-lb-rank         { font-family: 'IBM Plex Mono', monospace; font-size: 15px; font-weight: 600; width: 28px; flex-shrink: 0; color: var(--text-dim); }
.m-lb-rank.gold    { color: var(--gold); }
.m-lb-rank.silver  { color: var(--silver); }
.m-lb-rank.bronze  { color: var(--bronze); }
.m-lb-info         { flex: 1; min-width: 0; }
.m-lb-name         { font-weight: 700; font-size: 13px; color: var(--text); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.m-lb-org          { font-size: 10px; color: var(--text-dim); letter-spacing: 0.07em; text-transform: uppercase; margin-top: 1px; }
.m-lb-score-wrap   { text-align: right; flex-shrink: 0; }
.m-lb-score        { font-family: 'IBM Plex Mono', monospace; font-weight: 700; font-size: 22px; letter-spacing: -1px; line-height: 1; }
.m-lb-score-bar    { height: 3px; background: var(--border); margin-top: 4px; width: 64px; }
.m-lb-score-bar-fill { height: 100%; background: var(--wu-blue); transition: width 1s ease; }
.m-lb-chevron      { flex-shrink: 0; width: 18px; height: 18px; color: var(--text-dim); transition: transform 0.25s ease; }
.m-lb-card.expanded .m-lb-chevron { transform: rotate(180deg); }
.m-lb-detail       { display: none; padding: 0 14px 14px; border-top: 1px solid var(--border); background: var(--surface2); }
.m-lb-card.expanded .m-lb-detail { display: block; }
.m-lb-detail-grid  { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 8px; padding-top: 12px; }
.m-lb-detail-item  { background: var(--surface); border: 1px solid var(--border); padding: 10px 8px; text-align: center; }
.m-lb-detail-label { font-size: 8px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-dim); font-weight: 600; margin-bottom: 4px; }
.m-lb-detail-val   { font-family: 'IBM Plex Mono', monospace; font-weight: 700; font-size: 15px; }
.m-lb-note         { font-size: 11px; color: var(--text-muted); font-style: italic; font-family: 'Source Serif 4', serif; margin-top: 10px; padding: 8px 10px; background: var(--amber-bg); border-left: 3px solid var(--amber); line-height: 1.5; }

/* Mobile overview stat grid */
.m-overview-grid { display: none; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 0; }
.m-ov-card   { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); padding: 14px 12px 12px; }
.m-ov-label  { font-size: 9px; letter-spacing: 0.13em; text-transform: uppercase; color: var(--text-dim); font-weight: 600; margin-bottom: 5px; }
.m-ov-val    { font-weight: 700; font-size: 20px; letter-spacing: -0.5px; }
.m-ov-sub    { font-size: 10px; color: var(--text-muted); margin-top: 3px; line-height: 1.4; }


/* ── Breakpoint ≤ 768px ── */
@media (max-width: 768px) {
  .m-tabs    { display: flex; }
  .page-view { padding-top: 52px; padding-bottom: calc(76px + env(safe-area-inset-bottom, 0px)); }
  .page-tabs { display: none !important; }

  /* Nav */
  nav { padding: 0 12px; height: 58px; border-bottom: 2px solid var(--wu-blue); gap: 10px; }
  .nav-left { gap: 10px; min-width: 0; }
  .nav-partners { gap: 8px; padding-right: 10px; margin-right: 0; flex-shrink: 1; min-width: 0; }
  .nav-partner-logo-wu  { height: 26px; }
  .nav-partner-logo-bsc { height: 24px; }
  .nav-logo-wrap { gap: 8px; min-width: 0; }
  .nav-logo-bar  { height: 24px; }
  .nav-logo      { font-size: 13px; }
  .nav-links     { display: none !important; }
  .m-page-label  { display: none !important; }

  /* Ticker */
  .ticker-bar   { padding: 7px 0; }
  .ticker-item  { font-size: 10px; gap: 6px; }
  .ticker-score { font-size: 11px; }
  .ticker-model { max-width: 110px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

  /* Sections */
  section         { padding: 28px 16px 36px; }
  .overview-section { padding: 20px 16px 0 !important; }
  .section-header { margin-bottom: 22px; padding-bottom: 12px; flex-wrap: wrap; gap: 8px; }
  .section-title  { font-size: 20px; letter-spacing: -0.4px; }
  .section-num    { font-size: 10px; }

  /* Hero */
  .hero { background: var(--wu-blue); }
  .hero-bg-stripe, .hero-bg-dots { display: none; }
  .hero-content { padding: 24px 16px 0; max-width: 100%; background: transparent; }
  .version-badge  { font-size: 10px; padding: 5px 12px; margin-bottom: 14px; background: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.28); color: #fff; }
  .version-dot    { background: rgba(255,255,255,0.8); }
  .hero-affil     { margin-bottom: 14px; gap: 8px; }
  .hero-affil-line { width: 20px; background: rgba(255,255,255,0.7); }
  .hero-affil-text { font-size: 9px; letter-spacing: 0.1em; color: rgba(255,255,255,0.7); }
  .hero-tag       { font-size: 13px; line-height: 1.6; margin-bottom: 14px; color: rgba(255,255,255,0.78); }
  .hero h1        { font-size: clamp(26px, 8.5vw, 46px); letter-spacing: -1px; margin-bottom: 4px; color: #fff; }
  .hero h1 .line2 { font-size: clamp(22px, 7vw, 38px); letter-spacing: -0.5px; color: rgba(255,255,255,0.85); font-weight: 300; }
  .hero-meta {
    display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 18px;
    background: var(--bg); padding: 16px 16px 0; margin-left: -16px; margin-right: -16px; align-items: stretch;
  }
  .hero-divider   { display: none; }
  .hero-stat      { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); padding: 14px; display: flex; flex-direction: column; gap: 4px; min-height: max(80px, 22vw); }
  .hero-stat-num  { font-size: 26px; letter-spacing: -1px; }
  .hero-stat-label { font-size: clamp(7.5px, 2.1vw, 9px); letter-spacing: 0.08em; line-height: 1.3; }
  .hero-desc      { grid-column: 1 / -1; font-size: 13px; line-height: 1.6; max-width: 100%; padding: 14px; background: var(--surface2); border-left: 3px solid var(--border2); color: var(--text-muted); }
  .hero-cta       { margin-top: 0; gap: 10px; flex-wrap: wrap; background: var(--bg); padding: 16px 16px 32px; margin-left: -16px; margin-right: -16px; }
  .btn-primary    { padding: 14px 24px; font-size: 11px; }
  .btn-secondary  { padding: 13px 20px; font-size: 11px; }

  /* Overview */
  .overview-strip  { display: none !important; }
  .m-overview-grid { display: grid !important; }

  /* Leaderboard */
  .leaderboard-container { display: none; }
  #mLbCards              { display: flex !important; flex-direction: column; gap: 8px; margin-top: 4px; }
  #mLbCardsLeaderboard   { display: flex !important; flex-direction: column; gap: 8px; margin-top: 4px; }
  #full-leaderboard      { display: none !important; }
  #page-leaderboard .chart-controls { display: none; }

  /* Charts */
  .charts-grid   { grid-template-columns: 1fr; gap: 12px; }
  .chart-card    { padding: 18px 14px; }
  .chart-title   { font-size: 13px; }
  .chart-subtitle { font-size: 10px; margin-bottom: 16px; }
  .bar-chart { gap: 7px; }
  .bar-row   { gap: 8px; }
  .bar-label { width: 100px; font-size: 10px; line-height: 1.3; white-space: normal; }
  .bar-track { height: 20px; }
  canvas     { max-width: 100%; }

  /* Dashboard */
  .dashboard-grid { grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
  .dashboard-2col { grid-template-columns: 1fr; gap: 10px; margin-bottom: 16px; }
  .dashboard-3col { grid-template-columns: 1fr; gap: 10px; margin-bottom: 16px; }
  .dash-card-question-distribution .donut-row { flex-direction: column; align-items: center; }
  .dist-legend-item  { gap: 3px; }
  .dist-legend-bar   { height: 5px; }
  .dist-legend-name  { font-size: 11px; }
  .dist-legend-count { font-size: 11px; }
  .dist-legend-pct   { font-size: 9px; }
  .kpi-card    { padding: 16px 14px; }
  .kpi-label   { font-size: 9px; margin-bottom: 6px; }
  .kpi-value   { font-size: 26px; letter-spacing: -1px; }
  .kpi-sub     { font-size: 10px; margin-top: 3px; }
  .kpi-delta   { font-size: 10px; }
  .dash-card   { padding: 16px 14px; }
  .dash-card-title { font-size: 12px; }
  .dash-card-sub   { font-size: 10px; margin-bottom: 14px; }

  /* Heatmap */
  .heatmap-table th, .heatmap-table td { padding: 8px 10px; font-size: 11px; }
  .heatmap-table tbody tr td:first-child         { width: 100px !important; min-width: 100px !important; max-width: 100px !important; font-size: 11px; }
  .heatmap-table thead tr:first-child th:first-child { width: 100px !important; min-width: 100px !important; }
  .heatmap-legend-sticky { bottom: calc(60px + env(safe-area-inset-bottom, 0px)); padding: 8px 14px; gap: 10px; }
  .heatmap-legend-sticky-label { font-size: 9px; }
  .heatmap-legend-sticky-pills { gap: 6px; }
  .heatmap-legend-sticky-pills .score-pill { font-size: 9px; padding: 2px 7px; }

  /* Radar / compare */
  .radar-wrap      { flex-direction: column; gap: 20px; }
  .radar-svg-wrap  { width: 100%; }
  .radar-svg-wrap canvas { width: 100% !important; height: auto !important; max-height: 300px; }
  .radar-legend    { flex-direction: row; flex-wrap: wrap; gap: 8px 14px; padding-top: 4px; }
  .legend-item     { gap: 7px; }
  .legend-name     { font-size: 11px; }
  .legend-score    { font-size: 12px; padding-left: 8px; }
  .compare-bar     { padding: 12px 14px; gap: 8px 14px; }
  .compare-bar-label { width: 100%; font-size: 9px; margin-bottom: 2px; }
  .model-checkbox span { font-size: 11px; }
  .model-checkbox-dot  { width: 14px; height: 14px; }
  .chart-controls  { gap: 6px; padding: 10px 0; margin-bottom: 12px; }
  .ctrl-label { font-size: 9px; width: 100%; }
  .ctrl-btn   { padding: 9px 14px; font-size: 10px; }

  /* Score breakdown charts */
  .bd-row        { grid-template-columns: 110px 1fr 50px; gap: 8px; }
  .bd-label      { font-size: 10px; }
  .bd-val        { font-size: 12px; }
  .bd-bar-wrap   { height: 22px; }
  .bd-card       { padding: 16px 14px 12px; }
  .bd-card-title { font-size: 14px; }

  /* Methodology */
  .meth-hero    { padding: 28px 16px 32px; }
  .meth-hero h2 { font-size: 22px; letter-spacing: -0.5px; }
  .meth-hero p  { font-size: 13px; line-height: 1.65; }
  .mobile-page-hero    { display: block; padding: 28px 16px 32px; }
  .mobile-page-hero h2 { font-size: 22px; letter-spacing: -0.5px; }
  #page-leaderboard > section:first-of-type .section-header,
  #page-dashboard > section:first-of-type .section-header { display: none; }
  .meth-nav { padding: 0; overflow-x: auto; -webkit-overflow-scrolling: touch; position: sticky; bottom: calc(60px + env(safe-area-inset-bottom, 0px)); z-index: 120; background: #fff; border-top: 1px solid var(--border); box-shadow: 0 -2px 12px rgba(0,60,120,0.08); }
  .meth-nav-tab { padding: 13px 16px; font-size: 9.5px; white-space: nowrap; }
  .meth-section { padding: 28px 16px; }
  .meth-two-col { grid-template-columns: 1fr; gap: 14px; margin-top: 20px; }
  .meth-card    { padding: 20px 16px; }
  .meth-card-body { font-size: 13px; }
  .lim-grid  { grid-template-columns: 1fr; }
  .lim-item  { padding: 20px 0; border-right: none !important; padding-left: 0 !important; padding-right: 0 !important; }
  .lim-item:nth-child(even) { padding-left: 0; }
  .lim-num   { min-width: 28px; font-size: 10px; }
  .lim-title { font-size: 13px; }
  .lim-text  { font-size: 12px; }
  .meth-step      { gap: 14px; margin-bottom: 22px; }
  .meth-step-num  { width: 32px; height: 32px; font-size: 13px; }
  .meth-step-body h4 { font-size: 13px; }
  .meth-step-body p  { font-size: 13px; }
  .meth-table th  { font-size: 10px; padding: 9px 12px; }
  .meth-table td  { padding: 10px 12px; font-size: 12px; }
  .meth-table.data-table th:nth-child(2),
  .meth-table.data-table th:nth-child(3) { width: 58px; }
  .meth-table.data-table td:nth-child(2),
  .meth-table.data-table td:nth-child(3) { font-size: 11px; }
  .meth-callout  { padding: 14px 16px; font-size: 13px; }
  .formula-block { padding: 14px 16px; font-size: 11px; overflow-x: auto; line-height: 1.8; }
  #page-methodology .meth-two-col > div { min-width: 0; }

  /* Pipeline */
  .pipeline-diagram { flex-direction: column; gap: 0; overflow-x: visible; width: 100%; min-width: 0; }
  .pl-arrow         { transform: rotate(90deg); padding: 2px 0; font-size: 18px; align-self: flex-start; margin-left: 20px; }
  .pl-layer         { min-width: 0; width: 100%; }
  .pl-title, .pl-item { overflow-wrap: anywhere; word-break: break-word; }
  .pl-items         { flex-direction: column; flex-wrap: nowrap; gap: 5px; padding: 0 12px 14px; }
  .pl-item          { font-size: 11.5px; width: 100%; }
  .pl-loop-label    { font-size: 11px; padding: 8px 0 24px; }

  /* Reference box */
  .reference-box    { margin-top: 28px !important; border-radius: 14px !important; }
  .reference-bibtex { padding: 16px !important; font-size: 10.2px !important; line-height: 1.58 !important; }
  .reference-box-head { padding: 11px 12px 7px; }
  .reference-box-title { font-size: 12.5px; }
  .reference-box-sub, .reference-citation { font-size: 11.5px; }
  .reference-box-body { grid-template-columns: 1fr; padding: 10px 12px 12px; gap: 10px; }
  .reference-card { padding: 10px; }

  /* About */
  .affil-panel  { flex-direction: column; gap: 14px; padding: 18px 16px; }
  .affil-wu-logo { width: 44px; height: 44px; font-size: 13px; }
  .affil-name   { font-size: 14px; }
  .affil-dept   { font-size: 12px; }
  .affil-addr   { font-size: 11px; }
  #page-about > div:first-child { padding: 28px 16px 24px !important; }
  #page-about > div:first-child h2 { font-size: 22px !important; letter-spacing: -0.5px !important; }
  #page-about > div:first-child p  { font-size: 11.2px !important; }
  #page-about section { padding-top: 24px !important; }
  #page-about .team-grid { grid-template-columns: 1fr !important; gap: 14px !important; margin-bottom: 24px !important; }
  #page-about .person-card { display: flex !important; flex-direction: row !important; align-items: flex-start !important; gap: 0 !important; }
  #page-about .person-card .person-photo { width: 80px !important; flex-shrink: 0 !important; aspect-ratio: auto !important; height: 96px !important; }
  #page-about .person-card .person-info  { padding: 14px !important; flex: 1 !important; }
  #page-about .affil-inline { flex-direction: column !important; gap: 12px !important; padding: 18px 16px !important; }
  #page-dashboard > section,
  #page-dashboard .dash-section { padding-top: 24px !important; }
  #page-home > section:nth-of-type(2) { padding: 24px 16px 28px !important; }
  section[style*="padding-top:36px"],
  section[style*="padding-top: 36px"],
  section[style*="padding-top:52px"],
  section[style*="padding-top: 52px"] { padding-top: 24px !important; padding-left: 16px !important; padding-right: 16px !important; }

  /* Footer */
  footer         { padding: 28px 16px 24px; }
  .footer-top    { flex-direction: column; gap: 18px; margin-bottom: 20px; padding-bottom: 20px; }
  .footer-logo   { font-size: 16px; }
  .footer-tagline { font-size: 12px; }
  .footer-col-label   { font-size: 9px; }
  .footer-col-content { font-size: 11px; }
  .footer-bottom { flex-direction: column; align-items: flex-start; gap: 6px; font-size: 10px; }
}

/* ── Breakpoint ≤ 480px ── */
@media (max-width: 480px) {
  .dist-name-full { display: none; }
  .dist-name-abbr { display: inline; }
  .bd-row   { grid-template-columns: 90px 1fr 46px; gap: 6px; }
  .bd-label { font-size: 9.5px; }
}

/* ── Breakpoint ≤ 380px ── */
@media (max-width: 380px) {
  .hero h1       { font-size: 24px; }
  .hero h1 .line2 { font-size: 20px; }
  .hero-stat-num { font-size: 22px; }
  .kpi-value     { font-size: 22px; }
  .dashboard-grid   { grid-template-columns: 1fr; }
  .m-overview-grid  { grid-template-columns: 1fr; }
  .m-lb-detail-grid { grid-template-columns: 1fr 1fr; }
  .meth-nav-tab     { padding: 12px; font-size: 9px; }
  section           { padding: 24px 14px 32px; }
}

/* ── Scatter chart responsive heights ── */
@media (max-width: 900px) { #costScatterWrap, #speedScatterWrap { height: 380px; } }
@media (max-width: 600px) { #costScatterWrap, #speedScatterWrap { height: 300px; } }

/* ── Reference box at mid breakpoints ── */
@media (max-width: 900px) {
  .reference-box    { max-width: 100% !important; margin-top: 34px !important; border-radius: 15px !important; }
  .reference-bibtex { padding: 18px 20px !important; font-size: 11.2px !important; line-height: 1.62 !important; }
}

/* ── Affiliation box mobile ── */
@media (max-width: 640px) {
  #page-about .affiliation-box  { padding: 18px 16px; gap: 16px; }
  #page-about .affiliation-entry { grid-template-columns: 1fr; row-gap: 12px; align-items: start; }
  #page-about .affiliation-logo-wrap,
  #page-about .affiliation-logo-wrap-wu,
  #page-about .affiliation-logo-wrap-bsc { width: 132px; min-width: 132px; min-height: 56px; height: auto; padding: 8px 10px; }
  #page-about .affiliation-logo    { max-width: 110px; height: auto; }
  #page-about .affiliation-logo-wu  { max-width: 106px; max-height: 28px; }
  #page-about .affiliation-logo-bsc { max-width: 106px; max-height: 34px; }
  #page-about .affil-inline .affil-row { gap: 14px !important; }
  #page-about .affil-inline .affil-logo-slot { flex: 0 0 96px !important; width: 96px !important; height: 36px !important; }
  #page-about .affil-inline .affil-logo-slot img { width: 96px !important; max-width: 96px !important; height: 36px !important; max-height: 36px !important; }
}


/* ─────────────────────────────────────────────
   AUTH PAGES  (sign-in, register, landing, upload)
   Shared styles for all pages in auth-pages/
   ───────────────────────────────────────────── */

/* ── Shared layout ── */
.auth-wrapper {
  min-height: 100vh;
  padding-top: 140px;
  padding-bottom: 60px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.private-page {
  padding-top: 140px;
  min-height: 100vh;
  background: var(--bg);
}

/* ── Auth card (sign-in / register) ── */
.auth-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--wu-blue);
  padding: 40px 44px 48px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 4px 24px rgba(0,60,120,0.07);
}

.auth-eyebrow {
  font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--wu-blue); font-weight: 600; margin-bottom: 10px;
  font-family: 'IBM Plex Mono', monospace;
}

.auth-title {
  font-size: 26px; font-weight: 700; color: var(--wu-blue);
  letter-spacing: -0.5px; margin-bottom: 6px;
}

.auth-subtitle {
  font-family: 'Source Serif 4', serif; font-style: italic;
  font-size: 14px; color: var(--text-muted); margin-bottom: 32px; line-height: 1.6;
}

.auth-domain-note {
  background: var(--wu-light); border-left: 4px solid var(--wu-blue);
  padding: 11px 14px; font-size: 12px; color: var(--text-muted);
  margin-bottom: 24px; line-height: 1.6;
}
.auth-domain-note strong { color: var(--wu-blue); font-weight: 600; }

/* ── Message banners ── */
.auth-msg {
  display: none; padding: 11px 14px; font-size: 13px;
  margin-bottom: 18px; line-height: 1.5;
}
#authError   { background: var(--red-bg);   border-left: 4px solid var(--red);   color: var(--red);   }
#authSuccess { background: var(--green-bg); border-left: 4px solid var(--green); color: var(--green); }
#codeInfoMsg,
#verifyInfoMsg {
  background: var(--wu-light); border-left: 4px solid var(--wu-blue);
  color: var(--text-muted); font-family: 'Source Serif 4', serif;
  font-style: italic; display: block;
}
.form-error {
  display: none; background: var(--red-bg); border-left: 4px solid var(--red);
  color: var(--red); padding: 12px 16px; font-size: 13px;
  margin-bottom: 20px; line-height: 1.5;
}

/* ── Step switcher ── */
.auth-step        { display: none; }
.auth-step.active { display: block; }

/* ── Auth submit button ── */
.auth-submit {
  width: 100%; background: var(--wu-blue); color: #fff; border: none;
  padding: 12px 22px; font-family: 'IBM Plex Sans', sans-serif;
  font-size: 11px; font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; cursor: pointer; transition: background 0.2s; margin-top: 8px;
}
.auth-submit:hover    { background: var(--wu-blue2); }
.auth-submit:disabled { background: var(--border2); cursor: not-allowed; }

/* ── Verification code input ── */
.code-input {
  letter-spacing: 0.25em !important;
  font-family: 'IBM Plex Mono', monospace !important;
  font-size: 22px !important;
  text-align: center;
}

/* ── Resend / go back links ── */
.auth-resend { margin-top: 12px; font-size: 12px; color: var(--text-dim); text-align: center; }
.auth-resend a { color: var(--wu-blue); text-decoration: none; font-weight: 500; cursor: pointer; }
.auth-resend a:hover { text-decoration: underline; }

/* ── Footer note ── */
.auth-footer-note { margin-top: 24px; font-size: 12px; color: var(--text-dim); text-align: center; line-height: 1.8; }
.auth-footer-note a { color: var(--wu-blue); text-decoration: none; font-weight: 500; }
.auth-footer-note a:hover { text-decoration: underline; }

/* ── Button loading spinner ── */
.btn-spinner {
  display: inline-block; width: 12px; height: 12px;
  border: 2px solid rgba(255,255,255,0.4); border-top-color: #fff;
  border-radius: 50%; animation: btnSpin 0.7s linear infinite;
  margin-right: 8px; vertical-align: middle;
}
@keyframes btnSpin { to { transform: rotate(360deg); } }

/* ── Sign-out button ── */
.btn-sign-out {
  background: transparent; border: 1.5px solid rgba(255,255,255,0.3);
  color: rgba(255,255,255,0.7); padding: 9px 18px;
  font-family: 'IBM Plex Sans', sans-serif; font-size: 11px;
  font-weight: 500; letter-spacing: 0.06em; text-transform: uppercase;
  cursor: pointer; transition: all 0.2s;
}
.btn-sign-out:hover { border-color: rgba(255,255,255,0.6); color: #fff; }

/* ── Landing page hero ── */
.landing-hero { background: var(--wu-blue); padding: 44px 40px 48px; }
.landing-hero-eyebrow { font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 10px; }
.landing-hero-title { font-size: clamp(24px,4vw,36px); font-weight: 700; color: #fff; letter-spacing: -0.8px; margin-bottom: 8px; }
.landing-hero-title span { font-weight: 300; color: rgba(255,255,255,0.75); }
.landing-hero-sub { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 15px; color: rgba(255,255,255,0.6); max-width: 520px; line-height: 1.7; margin-bottom: 28px; }
.landing-hero-actions { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.landing-content { max-width: 1100px; margin: 0 auto; padding: 52px 40px; }

/* ── Submissions grid ── */
.submissions-header { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 28px; padding-bottom: 16px; border-bottom: 2px solid var(--wu-blue); flex-wrap: wrap; }
.submissions-header-left { display: flex; align-items: baseline; gap: 14px; }
.submissions-count { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--wu-blue); letter-spacing: 0.15em; opacity: 0.45; }
.submissions-title { font-weight: 700; font-size: 22px; letter-spacing: -0.5px; color: var(--wu-blue); }
.submissions-grid { display: grid; grid-template-columns: repeat(auto-fill,minmax(320px,1fr)); gap: 16px; }

/* ── Submission cards ── */
.submission-card { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); padding: 20px 22px; transition: box-shadow 0.2s; }
.submission-card:hover { box-shadow: 0 4px 16px rgba(0,60,120,0.1); }
.submission-card-meta { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; gap: 10px; }
.submission-date { font-family: 'IBM Plex Mono', monospace; font-size: 10px; color: var(--text-dim); }
.submission-status { font-size: 9px; font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase; padding: 3px 9px; }
.status-done       { background: var(--green-bg); color: var(--green); }
.status-processing { background: var(--amber-bg); color: var(--amber); }
.status-pending    { background: var(--surface2);  color: var(--text-dim); }
.status-error      { background: var(--red-bg);    color: var(--red); }
.status-rejected   { background: var(--red-bg);    color: var(--red); }
.submission-category { font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-dim); font-family: 'IBM Plex Mono', monospace; margin-bottom: 8px; }
.submission-prompt { font-family: 'Source Serif 4', serif; font-size: 13px; color: var(--text); line-height: 1.6; margin-bottom: 14px; }

/* ── Empty state ── */
.submissions-empty { background: var(--surface); border: 1.5px dashed var(--border2); padding: 52px 28px; text-align: center; grid-column: 1 / -1; }
.submissions-empty-icon { font-size: 32px; opacity: 0.3; margin-bottom: 14px; }
.submissions-empty-title { font-weight: 700; font-size: 16px; color: var(--wu-blue); margin-bottom: 8px; }
.submissions-empty-text { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 14px; color: var(--text-muted); margin-bottom: 24px; line-height: 1.6; }

/* ── Skeleton loading ── */
.skeleton { background: linear-gradient(90deg,var(--surface2) 25%,var(--border) 50%,var(--surface2) 75%); background-size: 200% 100%; animation: shimmer 1.4s infinite; border-radius: 2px; }
@keyframes shimmer { 0%{background-position:200% 0} 100%{background-position:-200% 0} }
.skeleton-card { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--border); padding: 20px 22px; }
.skeleton-line { height: 12px; margin-bottom: 10px; }

/* ── Upload page hero ── */
.upload-hero { background: var(--wu-blue); padding: 36px 40px 40px; }
.upload-hero-eyebrow { font-family: 'IBM Plex Mono', monospace; font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase; color: rgba(255,255,255,0.5); margin-bottom: 10px; }
.upload-hero-title { font-size: clamp(22px,3.5vw,32px); font-weight: 700; color: #fff; letter-spacing: -0.6px; margin-bottom: 8px; }
.upload-hero-sub { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 14px; color: rgba(255,255,255,0.6); max-width: 560px; line-height: 1.7; }
.upload-content { max-width: 900px; margin: 0 auto; padding: 52px 40px 80px; }

/* ── Upload form cards and fields ── */
.form-card { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); padding: 36px 40px 44px; margin-bottom: 28px; }
.form-card-title { font-weight: 700; font-size: 16px; color: var(--wu-blue); letter-spacing: -0.2px; margin-bottom: 6px; }
.form-card-sub { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 13px; color: var(--text-muted); margin-bottom: 28px; line-height: 1.6; }
.form-row      { margin-bottom: 22px; }
.form-row-2col { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 22px; }
.field-hint    { font-size: 11px; color: var(--text-dim); margin-top: 5px; font-family: 'Source Serif 4', serif; font-style: italic; line-height: 1.5; }
.required      { color: var(--wu-blue); margin-left: 2px; }
.optional      { font-weight: 400; text-transform: none; letter-spacing: 0; color: var(--text-dim); font-size: 10px; margin-left: 4px; }
.conditional-field         { display: none; }
.conditional-field.visible { display: block; }


/* Upload form — input, select, textarea base styles */
.form-card input[type="text"],
.form-card input[type="number"],
.form-card select,
.form-card textarea {
  width: 100%;
  background: var(--surface);
  border: 1.5px solid var(--border);
  padding: 10px 14px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 13px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
  border-radius: 0;
  appearance: none;
  -webkit-appearance: none;
  box-sizing: border-box;
}

.form-card input[type="text"]:focus,
.form-card input[type="number"]:focus,
.form-card select:focus,
.form-card textarea:focus {
  border-color: var(--wu-blue);
  box-shadow: 0 0 0 3px rgba(0,60,120,0.07);
}

.form-card select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a6478' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

.form-card textarea {
  min-height: 100px;
  resize: vertical;
  line-height: 1.6;
}

.form-card textarea.tall { min-height: 140px; }

/* Auth card form fields (sign-in / register) */
.auth-card input[type="email"],
.auth-card input[type="password"],
.auth-card input[type="text"] {
  width: 100%;
  background: var(--surface);
  border: 1.5px solid var(--border);
  padding: 10px 14px;
  font-family: 'IBM Plex Sans', sans-serif;
  font-size: 14px;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
  box-sizing: border-box;
}

.auth-card input:focus {
  border-color: var(--wu-blue);
  box-shadow: 0 0 0 3px rgba(0,60,120,0.07);
}

/* Label styling inside form groups */
.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 7px;
}


/* ── File upload area ── */
.file-upload-area { border: 1.5px dashed var(--border2); padding: 20px; text-align: center; cursor: pointer; transition: all 0.2s; background: var(--surface); position: relative; }
.file-upload-area:hover,
.file-upload-area.dragover { border-color: var(--wu-blue); background: var(--wu-light); }
.file-upload-area input[type="file"] { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; height: 100%; }
.file-upload-icon  { font-size: 22px; opacity: 0.4; margin-bottom: 6px; }
.file-upload-label { font-size: 12px; color: var(--text-muted); line-height: 1.6; }
.file-upload-label strong { color: var(--wu-blue); font-weight: 600; }
.file-name { font-family: 'IBM Plex Mono', monospace; font-size: 11px; color: var(--wu-blue); margin-top: 7px; word-break: break-all; }

/* ── Form submit area ── */
.form-submit-area { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; margin-top: 36px; padding-top: 24px; border-top: 1px solid var(--border); }
.form-submit-note { font-size: 12px; color: var(--text-dim); font-family: 'Source Serif 4', serif; font-style: italic; max-width: 380px; line-height: 1.5; }

/* ── Processing view ── */
#processingView { display: none; background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--amber); padding: 52px 40px; text-align: center; }
.processing-icon { width: 52px; height: 52px; border: 3px solid var(--wu-light); border-top-color: var(--wu-blue); border-radius: 50%; animation: processSpin 1s linear infinite; margin: 0 auto 20px; }
@keyframes processSpin { to { transform: rotate(360deg); } }
.processing-title  { font-weight: 700; font-size: 18px; color: var(--wu-blue); margin-bottom: 8px; letter-spacing: -0.3px; }
.processing-sub    { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 14px; color: var(--text-muted); margin-bottom: 24px; line-height: 1.6; max-width: 400px; margin-left: auto; margin-right: auto; }
.processing-status { font-family: 'IBM Plex Mono', monospace; font-size: 12px; color: var(--text-dim); letter-spacing: 0.04em; }

/* ── Result view ── */
#resultView { display: none; }
.result-header { background: var(--green-bg); border: 1px solid rgba(13,122,78,0.2); border-left: 4px solid var(--green); padding: 20px 24px; margin-bottom: 24px; display: flex; align-items: center; gap: 14px; }
.result-header-icon { font-size: 22px; }
.result-header-text h3 { font-weight: 700; font-size: 15px; color: var(--green); margin-bottom: 3px; }
.result-header-text p  { font-family: 'Source Serif 4', serif; font-style: italic; font-size: 13px; color: var(--text-muted); line-height: 1.5; }
.results-table-wrap    { background: var(--surface); border: 1px solid var(--border); border-top: 3px solid var(--wu-blue); overflow: hidden; }
.results-table-header  { display: grid; grid-template-columns: 1fr 120px 160px; padding: 10px 20px; background: var(--wu-blue); gap: 12px; }
.rth-cell              { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: rgba(255,255,255,0.7); font-weight: 500; }
.rth-cell:not(:first-child) { text-align: right; }
.result-row            { display: grid; grid-template-columns: 1fr 120px 160px; padding: 13px 20px; gap: 12px; align-items: center; border-bottom: 1px solid var(--border); transition: background 0.15s; }
.result-row:last-child { border-bottom: none; }
.result-row:hover      { background: var(--wu-light); }
.result-model-name     { font-family: 'IBM Plex Mono', monospace; font-size: 13px; font-weight: 500; color: var(--text); }
.result-score          { font-family: 'IBM Plex Mono', monospace; font-size: 16px; font-weight: 600; text-align: right; letter-spacing: -0.3px; }
.result-method         { text-align: right; font-size: 10px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--text-dim); font-family: 'IBM Plex Mono', monospace; }
.result-actions        { display: flex; gap: 12px; margin-top: 24px; flex-wrap: wrap; }
.score-high { color: var(--green); } .score-mid { color: var(--wu-blue); }
.score-low  { color: var(--amber); } .score-poor { color: var(--red); }
.result-error    { background: var(--red-bg); border: 1px solid rgba(185,28,28,0.2); border-left: 4px solid var(--red); padding: 20px 24px; }
.result-error h3 { font-weight: 700; font-size: 15px; color: var(--red); margin-bottom: 6px; }
.result-error p  { font-size: 13px; color: var(--text-muted); line-height: 1.5; }

/* ── Auth pages — responsive ── */
@media (max-width: 768px) {
  .landing-hero    { padding: 32px 16px 36px; }
  .landing-content { padding: 28px 16px; }
  .submissions-grid { grid-template-columns: 1fr; }
  .upload-hero     { padding: 28px 16px 32px; }
  .upload-content  { padding: 28px 16px 60px; }
  .form-card       { padding: 24px 18px 32px; }
  .form-row-2col   { grid-template-columns: 1fr; }
  .results-table-header,
  .result-row      { grid-template-columns: 1fr 90px 90px; }
  .form-submit-area { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 500px) {
  .auth-card  { padding: 28px 20px 36px; }
  .auth-title { font-size: 22px; }
}