:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1d2229;
  --muted: #5d6673;
  --border: #dde1e7;
  --accent: #1f6fe5;
  --b20: #cc1111;
  --b15: #0e9f6e;
  --b10: #7e4fc9;
  --t30: #7b3fa0;
  --t25: #1f6fe5;
  --t20: #2ca043;
  --t16: #d4a020;
  --warn-bg: #fff6e0;
  --warn-border: #e0b24a;
  --img-bg: #ffffff;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14171c;
    --surface: #1c2027;
    --text: #e6e9ee;
    --muted: #9aa3b0;
    --border: #2e343e;
    --accent: #5b9bff;
    --b20: #ff5d5d;
    --b15: #34c992;
    --b10: #a983f0;
    --warn-bg: #2d2615;
    --warn-border: #8a6a22;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}

header .wrap { padding-top: 32px; padding-bottom: 24px; }

h1 { margin: 0 0 6px; font-size: 2rem; letter-spacing: -0.01em; }
h2 { margin: 0 0 14px; font-size: 1.4rem; }
h3 { margin: 22px 0 8px; font-size: 1.1rem; }

.lead { margin: 0; color: var(--muted); font-size: 1.05rem; }

.muted { color: var(--muted); font-size: 0.92rem; }

nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

nav .wrap {
  display: flex;
  gap: 4px 18px;
  flex-wrap: wrap;
  padding-top: 10px;
  padding-bottom: 10px;
}

nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
nav a:hover { color: var(--accent); }

section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
  margin: 22px 0;
}

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

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

.stat {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
}

.stat .v { font-size: 1.35rem; font-weight: 700; }
.stat .k { color: var(--muted); font-size: 0.85rem; }

.table-scroll { overflow-x: auto; }

table {
  border-collapse: collapse;
  width: 100%;
  font-variant-numeric: tabular-nums;
  font-size: 0.95rem;
}

th, td {
  text-align: left;
  padding: 7px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }
td.num, th.num { text-align: right; }

.band { font-weight: 700; }
.b20 { color: var(--b20); }
.b15 { color: var(--b15); }
.b10 { color: var(--b10); }

.tube {
  display: inline-block;
  width: 26px;
  height: 8px;
  border-radius: 4px;
  margin-right: 6px;
  vertical-align: middle;
}
.t30 { background: var(--t30); }
.t25 { background: var(--t25); }
.t20 { background: var(--t20); }
.t16 { background: var(--t16); }

figure { margin: 16px 0; }

figure img {
  display: block;
  max-width: 100%;
  height: auto;
  background: var(--img-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
}

figcaption { color: var(--muted); font-size: 0.9rem; margin-top: 6px; }

.grid2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
}

.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
  margin: 18px 0;
}

.gallery figure { margin: 0; }

.gallery a {
  display: block;
  line-height: 0;
  border-radius: 6px;
  overflow: hidden;
}

.gallery img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: transform .25s ease;
}

.gallery a:hover img { transform: scale(1.03); }

.gallery figcaption { line-height: 1.45; }

figure.hero { margin: 18px 0; }
figure.hero img { width: 100%; }


.note {
  background: var(--warn-bg);
  border: 1px solid var(--warn-border);
  border-radius: 8px;
  padding: 10px 14px;
  margin: 14px 0;
}

ul.files { list-style: none; padding: 0; margin: 0; }
ul.files li { padding: 8px 0; border-bottom: 1px solid var(--border); }
ul.files li:last-child { border-bottom: 0; }
ul.files .desc { color: var(--muted); font-size: 0.9rem; }

footer { color: var(--muted); font-size: 0.9rem; padding: 10px 0 40px; }