:root {
  --bg: #fbfbfa;
  --panel: #ffffff;
  --text: #1c1b19;
  --dim: #6f6c66;
  --line: #e6e4df;
  --accent: #b45309;
  --good: #0f766e;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN",
    "Microsoft YaHei", "Noto Sans JP", sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.wrap { max-width: 900px; margin: 0 auto; padding: 0 20px; }

/* header */
.top { border-bottom: 1px solid var(--line); background: var(--panel); }
.top .wrap { display: flex; align-items: center; gap: 18px; height: 58px; }
.brand { font-weight: 600; letter-spacing: -0.01em; color: var(--text); white-space: nowrap; }
.mainnav { display: flex; gap: 16px; flex: 1; }
.mainnav a { color: var(--dim); font-size: 14px; }
.mainnav a.on, .mainnav a:hover { color: var(--text); }

.langs { position: relative; }
.langs summary {
  list-style: none; cursor: pointer; font-size: 13px; color: var(--dim);
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px;
}
.langs summary::-webkit-details-marker { display: none; }
.langs ul {
  position: absolute; right: 0; top: 34px; z-index: 10;
  background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 6px; margin: 0; list-style: none; min-width: 180px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
}
.langs li a { display: block; padding: 5px 10px; border-radius: 6px; font-size: 13px; color: var(--text); }
.langs li a.on { background: #f3f1ec; font-weight: 600; }

/* hero */
.hero { padding: 44px 0 20px; }
.hero.small { padding: 28px 0 12px; }
.hero h1 { font-size: 27px; margin: 0 0 8px; letter-spacing: -0.02em; }
.lead { margin: 0 0 18px; color: var(--dim); }
.hint { font-size: 12px; color: var(--dim); margin: 8px 0 0; }

.searchbar { display: flex; gap: 8px; max-width: 560px; }
.searchbar input {
  flex: 1; font: inherit; padding: 9px 12px; border: 1px solid var(--line);
  border-radius: var(--radius); background: var(--panel);
}
.searchbar input:focus { outline: 2px solid #f0c98a; outline-offset: -1px; }
.searchbar button {
  font: inherit; font-weight: 500; padding: 9px 18px; border-radius: var(--radius);
  border: 1px solid var(--accent); background: var(--accent); color: #fff; cursor: pointer;
}
.searchbar button:hover { background: #96460a; }

/* stats */
.stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  margin: 22px 0 30px; padding: 16px; background: var(--panel);
  border: 1px solid var(--line); border-radius: var(--radius);
}
.stats .n { display: block; font-size: 17px; font-weight: 600; }
.stats .k { display: block; font-size: 12px; color: var(--dim); }

/* lists */
.block { margin: 28px 0; }
.block h2 { font-size: 16px; margin: 0 0 12px; }
.worklist { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.worklist li {
  display: flex; align-items: baseline; gap: 10px;
  padding: 10px 2px; border-bottom: 1px solid var(--line);
}
.worklist li a { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.worklist .meta { font-size: 12px; color: var(--dim); white-space: nowrap; }
.worklist .price { font-variant-numeric: tabular-nums; font-weight: 500; white-space: nowrap; }

/* work page */
.workhead { padding: 26px 0 6px; }
.crumb { font-size: 12px; color: var(--dim); margin: 0 0 6px; }
.workhead h1 { font-size: 22px; margin: 0 0 6px; letter-spacing: -0.01em; }
.meta { color: var(--dim); font-size: 13px; margin: 0; }

.pricetable {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; margin: 18px 0;
}
.pricetable > div { background: var(--panel); padding: 12px 14px; }
.pricetable dt { font-size: 12px; color: var(--dim); margin: 0 0 2px; }
.pricetable dd { margin: 0; font-size: 15px; font-variant-numeric: tabular-nums; }
.pricetable dd.big { font-size: 22px; font-weight: 600; }
.pricetable dd.good { color: var(--good); }

.price-chart { width: 100%; height: auto; display: block; margin-top: 4px; }
.price-chart .grid { stroke: #eceae5; stroke-width: 1; }
.price-chart .tick { font-size: 11px; fill: var(--dim); }
.price-chart .line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.price-chart .area { fill: rgba(180, 83, 9, 0.08); }
.price-chart .dot { fill: var(--accent); }

.note {
  font-size: 13px; color: var(--dim); background: #f6f4ef;
  border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px;
}
.position { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 0 0 16px; }
.badge {
  display: inline-block; font-size: 12px; font-weight: 600; padding: 3px 9px;
  border-radius: 999px; background: #f1efe9; color: #4a4a44; border: 1px solid var(--line);
}
.badge.low { background: #e6f4ef; color: var(--good); border-color: #bfe3d8; }
.button {
  display: inline-block; padding: 8px 16px; border-radius: var(--radius);
  background: var(--panel); border: 1px solid var(--line); color: var(--text); font-size: 14px;
}
.button:hover { border-color: var(--accent); text-decoration: none; }

/* table */
.ranktable { width: 100%; border-collapse: collapse; font-size: 14px; }
.ranktable th, .ranktable td { text-align: left; padding: 9px 6px; border-bottom: 1px solid var(--line); }
.ranktable th { font-size: 12px; color: var(--dim); font-weight: 500; }
.ranktable .num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
.ranktable .good { color: var(--good); white-space: nowrap; }
.ranktable .meta { display: block; font-size: 12px; }

/* misc */
.prose p { margin: 0 0 14px; }
.prose h2 { font-size: 14px; margin: 22px 0 8px; color: var(--dim); font-weight: 600; }
.dim { color: var(--dim); font-size: 13px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--dim); }

.bottom { border-top: 1px solid var(--line); margin-top: 56px; padding: 22px 0 34px; }
.bottom p { margin: 0 0 6px; font-size: 12px; color: var(--dim); }
.bottom a { color: var(--dim); }

@media (max-width: 640px) {
  .top .wrap { height: auto; flex-wrap: wrap; padding: 10px 16px; gap: 10px; }
  .mainnav { order: 3; width: 100%; gap: 14px; overflow-x: auto; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .pricetable { grid-template-columns: 1fr; }
  .worklist .meta { display: none; }
  .hero { padding: 26px 0 12px; }
  .hero h1 { font-size: 22px; }
}