:root {
  --bg: #fbfaf8;
  --panel: #ffffff;
  --ink: #1a1a1a;
  --muted: #6b6b6b;
  --line: #e6e3dd;
  --gold: #b8860b;
  --gold-soft: #d9a520;
  --silver: #5a7a8c;
  --silver-soft: #86a5b6;
  --up: #12805c;
  --down: #c0392b;
  --warn-bg: #fdf6e8;
  --fail-bg: #fdecea;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14140f;
    --panel: #1d1d1a;
    --ink: #ececea;
    --muted: #9a9a93;
    --line: #33332d;
    --gold: #e0b13c;
    --gold-soft: #f0c760;
    --silver: #8fb3c7;
    --silver-soft: #a8c6d6;
    --up: #3fbb8c;
    --down: #e8705f;
    --warn-bg: #26210f;
    --fail-bg: #2e1512;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
        "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 940px; margin: 0 auto; padding: 0 20px; }

.head { padding: 48px 0 28px; border-bottom: 1px solid var(--line); }
h1 { margin: 0; font-size: 30px; letter-spacing: -0.02em; }
.tagline { margin: 8px 0 0; color: var(--muted); font-size: 15px; }
.meta { margin: 14px 0 0; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }

a { color: inherit; text-underline-offset: 2px; }

.banner {
  margin: 24px 0 0; padding: 12px 16px; border-radius: 10px;
  background: var(--warn-bg); border: 1px solid var(--line);
  font-size: 14px; color: var(--ink);
}
.banner.fail {
  background: var(--fail-bg); border-color: var(--down);
  border-left-width: 4px; line-height: 1.6;
}

.gatemark {
  margin: 10px 0 0; font-size: 12.5px; color: var(--down);
}
.nominal { font-weight: 400; opacity: .75; }

/* cards */
.cards { display: grid; gap: 20px; margin: 28px 0; }
@media (min-width: 760px) { .cards { grid-template-columns: 1fr 1fr; } }

.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 20px;
}
.card h2 { margin: 0; font-size: 19px; display: flex; align-items: baseline; gap: 8px; }
.card h2 code { font-size: 12px; color: var(--muted); font-weight: 400; }

.price {
  margin: 10px 0 2px; font-size: 32px; font-weight: 600;
  letter-spacing: -0.02em; font-variant-numeric: tabular-nums;
}
.price .unit { font-size: 13px; font-weight: 400; color: var(--muted); margin-left: 6px; }
.chg { font-size: 14px; font-variant-numeric: tabular-nums; }
.chg.up { color: var(--up); } .chg.down { color: var(--down); }

.tabs { display: flex; gap: 6px; margin: 16px 0 10px; }
.tabs button {
  font: inherit; font-size: 13px; padding: 5px 12px; cursor: pointer;
  background: transparent; color: var(--muted);
  border: 1px solid var(--line); border-radius: 999px;
}
.tabs button[aria-selected="true"] {
  background: var(--ink); color: var(--bg); border-color: var(--ink);
}

svg.chart { width: 100%; height: auto; display: block; }

.stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px;
  margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--line);
}
.stats div { min-width: 0; }
.stats dt { font-size: 12px; color: var(--muted); margin-bottom: 3px; }
.stats dd {
  margin: 0; font-size: 16px; font-weight: 600;
  font-variant-numeric: tabular-nums; white-space: nowrap;
}

/* Three columns cannot hold a price range like "3,999.3 - 4,423.4" on a
   narrow phone, so stack into label-left / value-right rows instead. */
@media (max-width: 430px) {
  .stats { grid-template-columns: 1fr; gap: 7px; }
  .stats div { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
  .stats dt { margin-bottom: 0; }
}

/* panels */
.panel {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: 14px; padding: 20px 22px; margin: 20px 0;
}
.panel.warn { background: var(--warn-bg); }
.panel h2 { margin: 0 0 10px; font-size: 17px; }
.note { color: var(--muted); font-size: 13px; margin: 0 0 14px; }

.tablewrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td {
  text-align: right; padding: 8px 10px; border-bottom: 1px solid var(--line);
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
th:first-child, td:first-child { text-align: left; }
thead th { color: var(--muted); font-weight: 500; font-size: 12px; }
td.good { color: var(--up); } td.bad { color: var(--down); }

.method { margin: 0; padding-left: 20px; font-size: 14px; }
.method li { margin-bottom: 7px; }
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.9em; background: rgba(128,128,128,.12);
  padding: 1px 5px; border-radius: 4px;
}

.foot {
  padding: 24px 20px 48px; color: var(--muted);
  font-size: 13px; border-top: 1px solid var(--line); margin-top: 8px;
}
.foot p { margin: 4px 0; }
.tiny { font-size: 12px; opacity: .7; }