:root {
  --bg: #fafbfc;
  --surface: #ffffff;
  --text: #1a1d21;
  --muted: #5c6570;
  --border: #e8eaed;
  --accent: #2563eb;
  --accent-soft: #eff6ff;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 4px 24px rgba(0, 0, 0, 0.06);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  font-size: 15px;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  max-width: 960px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.hero {
  text-align: center;
  margin-bottom: 2.75rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero .paper-title {
  margin: 0 auto 0.75rem;
  max-width: 40rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
}

.hero .tagline {
  margin: 0 auto 1rem;
  max-width: 36rem;
  color: var(--muted);
  font-size: 1.05rem;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.35rem 1.25rem;
  margin-top: 0.5rem;
}

.hero-links a {
  font-weight: 600;
  font-size: 0.95rem;
}

.hero-links a[hidden] {
  display: none;
}

.panel {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow: hidden;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.tab {
  flex: 1 1 auto;
  min-width: 8rem;
  padding: 0.85rem 1rem;
  border: none;
  background: transparent;
  font: inherit;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.15s, background 0.15s;
}

.tab:hover {
  color: var(--text);
  background: rgba(255, 255, 255, 0.6);
}

.tab[aria-selected="true"] {
  color: var(--accent);
  background: var(--surface);
  border-bottom-color: var(--accent);
}

.tab-panels {
  padding: 1.25rem 1.25rem 1.5rem;
}

.tab-panel[hidden] {
  display: none;
}

.tab-panel h2 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
  font-weight: 600;
}

.tab-panel .hint {
  margin: 0 0 1rem;
  font-size: 0.875rem;
  color: var(--muted);
}

.table-scroll {
  overflow-x: auto;
  margin: 0 -0.25rem;
  padding: 0 0.25rem;
}

table {
  width: 100%;
  min-width: 38rem;
  border-collapse: collapse;
  table-layout: fixed;
  font-size: 0.9375rem;
}

.col-rank {
  width: 3rem;
}

.col-model {
  width: auto;
}

.col-num {
  width: 10.75rem;
}

th,
td {
  padding: 0.65rem 0.85rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

th {
  font-weight: 600;
  color: var(--muted);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

th.num,
td.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

th.sortable.num {
  cursor: pointer;
  user-select: none;
  color: var(--text);
  letter-spacing: normal;
  /* Same padding as td.num so ▼ sits on the same right edge as digits */
  padding: 0.65rem 0.85rem;
}

th.sortable .th-inner {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  line-height: 1.2;
}

th.sortable .th-label {
  flex: 1 1 auto;
  text-align: left;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.25;
}

th.sortable:hover {
  background: var(--accent-soft);
}

th.sortable .indicator {
  flex: 0 0 auto;
  opacity: 0.35;
  font-size: 0.75rem;
  line-height: 1;
}

th.sortable.sorted-asc .indicator,
th.sortable.sorted-desc .indicator {
  opacity: 1;
  color: var(--accent);
}

tr:last-child td {
  border-bottom: none;
}

tbody tr:hover td {
  background: var(--accent-soft);
}

.rank {
  width: 3rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
}

.banner {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  background: #fff8e6;
  border: 1px solid #f5e0a3;
  color: #6b5a1a;
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
}

.banner.error {
  background: #fef2f2;
  border-color: #fecaca;
  color: #991b1b;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  text-align: center;
  font-size: 0.8125rem;
  color: var(--muted);
}

footer p {
  margin: 0.35rem 0;
}