:root {
  --color-bg: #faf7f2;
  --color-surface: #ffffff;
  --color-border: #e5ddd0;
  --color-text: #2c2520;
  --color-text-muted: #746b60;
  --color-primary: #8a3b2e;
  --color-primary-soft: #f2e2dc;
  --color-accent: #2e6b8a;
  --color-accent-soft: #dcecf2;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", "Meiryo", system-ui, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
}

a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.site-header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}
.brand { font-weight: 700; font-size: 1.1rem; color: var(--color-text); }
.main-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.main-nav a { color: var(--color-text-muted); font-weight: 600; padding: 4px 2px; border-bottom: 2px solid transparent; }
.main-nav a.active, .main-nav a:hover { color: var(--color-primary); border-bottom-color: var(--color-primary); text-decoration: none; }

.site-main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.site-footer {
  max-width: 1080px;
  margin: 0 auto;
  padding: 20px;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}
.site-footer__nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  margin-top: 10px;
}
.site-footer__nav a {
  color: var(--color-text-muted);
}

h1 { font-size: 1.5rem; margin: 0 0 8px; }
h2 { font-size: 1.2rem; margin: 32px 0 12px; }
h3 { font-size: 1.05rem; margin: 20px 0 8px; }
.lead { color: var(--color-text-muted); margin: 0 0 20px; }

.card-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 720px) { .grid-2 { grid-template-columns: 1fr; } }

.purpose-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.purpose-list li { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 14px 16px; }
.purpose-list a { font-weight: 700; }
.purpose-list p { margin: 4px 0 0; color: var(--color-text-muted); font-size: 0.9rem; }

.section-label { font-size: 0.8rem; font-weight: 700; color: var(--color-text-muted); margin: 4px 0 6px; }

.tabs { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 16px; }
.tabs a { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); font-size: 0.9rem; }
.tabs a.active { background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.tabs a:hover { text-decoration: none; border-color: var(--color-primary); }

.table-scroll-hint { display: none; font-size: 0.78rem; color: var(--color-text-muted); margin-bottom: 6px; }

table { border-collapse: collapse; width: 100%; font-size: 0.92rem; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--color-border); text-align: left; }
th { color: var(--color-text-muted); font-weight: 600; white-space: nowrap; }
tr:hover td { background: #fbf5ee; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.rank-1 td { background: #fbeee0; font-weight: 700; }
.rank-badge { display: inline-block; min-width: 1.6em; text-align: center; }

@media (max-width: 720px) {
  .table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 0 -20px; padding: 0 20px 4px; }
  .table-scroll table { width: max-content; min-width: 100%; }
  .table-scroll-hint { display: block; }
}

.bar-row { display: flex; align-items: center; gap: 10px; margin: 4px 0; }
.bar-label { width: 6.5em; flex-shrink: 0; font-size: 0.85rem; color: var(--color-text-muted); }
.bar-track { flex: 1; background: #f1ebe1; border-radius: 4px; height: 14px; overflow: hidden; }
.bar-fill { display: block; background: var(--color-primary); height: 100%; }
.bar-fill.accent { background: var(--color-accent); }
.bar-value { width: 5.5em; flex-shrink: 0; text-align: right; font-size: 0.85rem; font-variant-numeric: tabular-nums; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 12px; margin: 16px 0; }
.stat-tile { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 12px 14px; }
.stat-tile .value { font-size: 1.4rem; font-weight: 700; color: var(--color-primary); }
.stat-tile .label { font-size: 0.8rem; color: var(--color-text-muted); }
.rank-note { font-size: 0.75rem; color: var(--color-accent); margin-top: 4px; }

.highlight-list { list-style: none; margin: 0; padding: 0; }
.highlight-list li { padding: 6px 0; border-bottom: 1px dashed var(--color-border); font-size: 0.92rem; }
.highlight-list li:last-child { border-bottom: none; }
.highlight-list .diff-plus { color: var(--color-primary); font-weight: 700; }
.highlight-list .diff-minus { color: var(--color-accent); font-weight: 700; }

.digit-pills { display: flex; gap: 6px; flex-wrap: wrap; margin: 8px 0; }
.digit-pill { display: inline-flex; align-items: center; justify-content: center; width: 2em; height: 2em; border-radius: 50%; background: var(--color-primary-soft); color: var(--color-primary); font-weight: 700; }

.card-chip-list { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0; }
.card-chip { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 6px; padding: 4px 8px; font-size: 0.85rem; }
.card-chip .no { color: var(--color-text-muted); margin-right: 4px; }
.card-chip.tomofuda { border-color: var(--color-accent); background: var(--color-accent-soft); }

form.digit-picker fieldset { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 12px; }
form.digit-picker legend { font-weight: 700; padding: 0 6px; }
.digit-checks { display: flex; flex-wrap: wrap; gap: 10px; }
.digit-checks label { display: inline-flex; align-items: center; gap: 4px; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: 6px; padding: 4px 10px; }
button, .btn { display: inline-block; background: var(--color-primary); color: #fff; border: none; border-radius: 8px; padding: 12px 20px; font-size: 1rem; font-weight: 700; cursor: pointer; box-shadow: 0 2px 6px rgba(138, 59, 46, 0.28); transition: transform 0.1s ease, box-shadow 0.1s ease; }
button:hover, .btn:hover { opacity: 0.92; text-decoration: none; box-shadow: 0 3px 10px rgba(138, 59, 46, 0.32); }
button:active, .btn:active { transform: translateY(1px); box-shadow: 0 1px 4px rgba(138, 59, 46, 0.28); }

.hero-actions { display: grid; gap: 14px; margin: 20px 0 32px; }
.hero-action { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 18px 20px; }
.hero-action .btn { width: 100%; text-align: center; font-size: 1.1rem; padding: 14px 20px; }
.hero-action p { margin: 10px 0 0; color: var(--color-text-muted); font-size: 0.9rem; }
@media (min-width: 640px) { .hero-action .btn { width: auto; min-width: 280px; } }

.compare-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 720px) { .compare-cols { grid-template-columns: 1fr; } }

.cmp-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 4px 24px; align-items: start; }
.cmp-item { padding: 8px 0; border-bottom: 1px dashed var(--color-border); }
.cmp-item-label { font-weight: 700; font-size: 0.9rem; margin-bottom: 4px; }
.cmp-item .bar-row { margin: 2px 0; }
.side-label { display: inline-block; padding: 2px 10px; border-radius: 999px; font-weight: 700; font-size: 0.8rem; }
.side-a { background: var(--color-primary-soft); color: var(--color-primary); }
.side-b { background: var(--color-accent-soft); color: var(--color-accent); }

.notice { background: var(--color-primary-soft); border: 1px solid var(--color-primary); border-radius: var(--radius); padding: 12px 16px; margin-bottom: 16px; }
.order-toggle { margin: 4px 0 16px; font-size: 0.9rem; }
.order-toggle a { margin-right: 12px; }
.order-toggle a.active { font-weight: 700; text-decoration: underline; }

.pager { display: flex; align-items: center; justify-content: center; gap: 4px; flex-wrap: wrap; margin: 16px 0; }
.pager a { padding: 6px 14px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-surface); color: var(--color-text); font-size: 0.9rem; }
.pager a:hover { text-decoration: none; border-color: var(--color-primary); color: var(--color-primary); }
.pager-status { font-size: 0.9rem; color: var(--color-text-muted); padding: 0 8px; }