:root {
  --paper: #f7f2e7;
  --card: #fdfaf3;
  --ink: #232019;
  --muted: #8a8272;
  --accent: #2e6e4e;
  --bad: #b03a2e;
  --rule: #d9d0bc;
  --serif: "Source Serif 4", Georgia, "Times New Roman", "Noto Serif CJK SC", serif;
  --sans: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "Noto Sans CJK SC", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.55;
}

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 20px; }

a { color: var(--ink); }

h1, h2, h3, .brand-title, .score { font-family: var(--serif); }

/* header */
.site-header { border-bottom: 2px solid var(--ink); background: var(--paper); }
.header-row { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; padding: 14px 20px; }
.brand { text-decoration: none; }
.brand-title { font-size: 1.45rem; font-weight: 700; }
.brand-tagline { display: block; font-size: 0.78rem; color: var(--muted); }
.site-nav { display: flex; gap: 16px; align-items: baseline; font-size: 0.9rem; }
.site-nav a { text-decoration: none; border-bottom: 1px solid transparent; }
.site-nav a:hover { border-bottom-color: var(--ink); }
.lang-switcher { color: var(--muted); font-size: 0.85rem; }
.lang-link { color: var(--muted); }
.lang-current { font-weight: 700; }

/* headline */
.headline { margin: 28px 0 8px; padding: 22px 24px; border: 1.5px solid var(--ink); background: var(--card); }
.headline h1 { margin: 0 0 6px; font-size: 1.7rem; line-height: 1.25; }
.headline.anomaly h1 { color: var(--bad); }
.participation { color: var(--muted); font-size: 0.92rem; margin: 4px 0 0; }
.participation strong { color: var(--ink); font-size: 1.05rem; }

/* live update indicator */
.live-line { display: flex; align-items: center; gap: 7px; margin: 10px 0 0; font-size: 0.8rem; color: var(--muted); }
.live-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); animation: live-pulse 2s ease-in-out infinite; }
@keyframes live-pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(46, 110, 78, 0.4); }
  50% { opacity: 0.55; box-shadow: 0 0 0 5px rgba(46, 110, 78, 0); }
}

/* rating bands (Steam-style qualitative labels) */
.band { font-size: 0.8rem; font-weight: 700; padding: 2px 9px; border-radius: 3px; white-space: nowrap; }
/* 5-level gradation: solid chips at both extremes, tints in between */
.band-sharper { color: #f5f0e6; background: #1e5c3f; }
.band-better { color: #1e5c3f; background: rgba(46, 110, 78, 0.14); }
.band-usual { color: var(--muted); background: rgba(138, 130, 114, 0.14); }
.band-worse { color: #8f3a2a; background: rgba(176, 58, 46, 0.13); }
.band-dumber { color: #f5f0e6; background: var(--bad); }
.card-score-side { display: flex; flex-direction: column; align-items: flex-start; gap: 3px; }

/* vibe widget */
.vibe-widget { margin: 20px 0; padding: 18px 22px; border: 1px dashed var(--muted); background: var(--card); }
.vibe-widget h2 { margin: 0 0 2px; font-size: 1.15rem; }
.vibe-subtitle { margin: 0 0 12px; color: var(--muted); font-size: 0.88rem; }
.vibe-form { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.vibe-label { font-size: 0.85rem; color: var(--muted); }
.vibe-model { font-size: 0.95rem; padding: 6px 8px; background: var(--paper); border: 1px solid var(--rule); }
.vibe-moods, .vibe-tags { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.vibe-tags[hidden] { display: none; }
.mood, .tag {
  font-size: 0.92rem; padding: 7px 14px; cursor: pointer;
  background: var(--paper); border: 1px solid var(--rule); border-radius: 999px;
}
.mood.selected, .tag.selected { border-color: var(--ink); background: var(--ink); color: var(--paper); }
.vibe-submit {
  font-size: 0.95rem; padding: 8px 22px; cursor: pointer; font-weight: 600;
  background: var(--accent); color: #fff; border: none; border-radius: 3px;
}
.vibe-submit:disabled { background: var(--muted); cursor: not-allowed; opacity: 0.6; }
.vibe-result { width: 100%; margin: 4px 0 0; font-size: 0.92rem; font-weight: 600; }
.vibe-result.error { color: var(--bad); }

/* boards */
.boards-section { margin: 30px 0; }
.board-tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--ink); }
.board-tabs label {
  padding: 8px 18px; cursor: pointer; font-size: 0.92rem; font-weight: 600;
  border: 1px solid var(--rule); border-bottom: none; background: var(--paper);
  color: var(--muted);
}
.board { display: none; padding-top: 12px; }
.board-hint { margin: 8px 0 0; font-size: 0.78rem; color: var(--muted); }
#board-open:checked ~ .board-tabs label[for="board-open"],
#board-hosted:checked ~ .board-tabs label[for="board-hosted"] {
  background: var(--ink); color: var(--paper); border-color: var(--ink);
}
#board-open:checked ~ .boards .board[data-board="open"],
#board-hosted:checked ~ .boards .board[data-board="hosted"] { display: block; }

.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.card {
  display: block; padding: 16px 18px; text-decoration: none;
  background: var(--card); border: 1px solid var(--rule);
  transition: border-color 0.15s;
}
.card:hover { border-color: var(--ink); }
.card-top { display: flex; justify-content: space-between; align-items: baseline; }
.card h3 { margin: 0; font-size: 1.15rem; }
.card-score { margin: 6px 0 2px; display: flex; align-items: baseline; gap: 8px; }
.score { font-size: 2rem; font-weight: 700; }
.score.big { font-size: 2.8rem; }
.score.insufficient { font-size: 1rem; color: var(--muted); font-style: italic; }
.score-label { font-size: 0.75rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.04em; }
.delta { font-size: 0.88rem; font-weight: 700; }
.delta.up { color: var(--accent); }
.delta.down { color: var(--bad); }
.delta.flat { color: var(--muted); }
.card-meta { display: flex; flex-wrap: wrap; gap: 6px 12px; margin-top: 8px; font-size: 0.78rem; color: var(--muted); }
.chip { border: 1px solid var(--rule); border-radius: 999px; padding: 1px 8px; }
.variant-callout.up { color: var(--accent); border-color: rgba(46, 110, 78, 0.45); }
.variant-callout.down { color: var(--bad); border-color: rgba(176, 58, 46, 0.45); }
.source-split { white-space: nowrap; }
.sparkline { display: block; margin-top: 4px; }

/* model page */
.model-header { margin: 28px 0 10px; padding-bottom: 14px; border-bottom: 2px solid var(--ink); }
.model-header h1 { margin: 0 0 4px; font-size: 2.2rem; }
.model-score-row { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.model-vibe { font-size: 0.95rem; }
.model-chart, .model-variants, .model-categories, .model-drivers, .model-evidence { margin: 26px 0; }
.model-chart h2, .model-variants h2, .model-categories h2, .model-drivers h2, .model-evidence h2 { font-size: 1.15rem; border-bottom: 1px solid var(--rule); padding-bottom: 4px; }
.line-chart { width: 100%; height: auto; background: var(--card); border: 1px solid var(--rule); }
.chart-tick { font-size: 10px; fill: var(--muted); font-family: var(--sans); }
.chart-empty { color: var(--muted); font-style: italic; }
.cat-table { border-collapse: collapse; width: 100%; max-width: 560px; }
.cat-table th { text-align: left; font-weight: 400; padding: 5px 12px 5px 0; font-size: 0.92rem; white-space: nowrap; }
.cat-table td { padding: 5px 10px 5px 0; }
.cat-score { font-weight: 700; font-family: var(--serif); }
.cat-score.insufficient { color: var(--muted); font-weight: 400; font-style: italic; font-size: 0.85rem; }
.cat-n { color: var(--muted); font-size: 0.78rem; white-space: nowrap; }
.variant-hint, .variant-generic-note { color: var(--muted); font-size: 0.82rem; }
.variant-table-wrap { overflow-x: auto; }
.variant-table { border-collapse: collapse; width: 100%; min-width: 680px; }
.variant-table tr { border-bottom: 1px dotted var(--rule); }
.variant-table th { text-align: left; font-weight: 600; padding: 7px 18px 7px 0; white-space: nowrap; }
.variant-table td { padding: 7px 18px 7px 0; vertical-align: middle; }
.variant-table .sparkline { margin-top: 0; }
.variant-score-cell { display: flex; align-items: baseline; gap: 7px; white-space: nowrap; }
.variant-score { font-family: var(--serif); font-weight: 700; }
.variant-score.insufficient { color: var(--muted); font-family: var(--sans); font-size: 0.8rem; font-style: italic; font-weight: 400; }
.variant-n { color: var(--muted); font-size: 0.78rem; white-space: nowrap; }
.model-drivers { display: flex; gap: 40px; flex-wrap: wrap; }
.driver-col { flex: 1 1 260px; }
.drivers { list-style: none; padding: 0; margin: 8px 0; }
.drivers li { padding: 4px 0; border-bottom: 1px dotted var(--rule); font-size: 0.95rem; text-transform: capitalize; }
.driver-count { color: var(--muted); font-size: 0.82rem; }
.driver-aspect { color: var(--muted); font-size: 0.78rem; text-transform: none; }
.driver-aspect::before { content: "· "; }
.evidence { margin: 14px 0; padding: 10px 16px; border-left: 3px solid var(--rule); background: var(--card); }
.evidence p { margin: 0 0 4px; font-size: 0.98rem; }
.evidence cite { font-style: normal; color: var(--muted); font-size: 0.8rem; }

/* methodology / misc */
.methodology h1 { font-size: 1.9rem; margin-top: 30px; }
.methodology section { max-width: 720px; }
.positioning { color: var(--muted); font-style: italic; }
.not-found { text-align: center; margin: 80px 0; }
.board-empty { color: var(--muted); font-style: italic; }

.site-footer { margin-top: 48px; border-top: 2px solid var(--ink); padding: 18px 0 30px; font-size: 0.85rem; color: var(--muted); }
.footer-meta { font-size: 0.78rem; }

@media (max-width: 640px) {
  .headline h1 { font-size: 1.3rem; }
  .board-tabs label { padding: 8px 10px; font-size: 0.8rem; }
  .model-drivers { gap: 16px; }
}