:root {
  --bg: #0b0d10;
  --bg-elev: #141820;
  --bg-card: #171c24;
  --border: #242b36;
  --text: #e6e9ef;
  --text-muted: #8a94a5;
  --text-dim: #5a6373;
  --accent: #7aa2ff;
  --accent-hover: #95b5ff;
  --radius: 10px;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC",
    "Microsoft YaHei", sans-serif;
}

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

.muted {
  color: var(--text-muted);
}
.small {
  font-size: 12px;
}
.label {
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* topbar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elev);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.02em;
}
.nav a {
  color: var(--text-muted);
  margin-left: 20px;
}
.nav a:hover {
  color: var(--text);
  text-decoration: none;
}

/* layout */
.container {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 28px 80px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}
.card h2 {
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 600;
}

/* hero */
.hero-head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}
.hero-kicker {
  color: var(--text-muted);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.hero-title {
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.version {
  font-size: 28px;
  font-weight: 600;
  font-family: var(--mono);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 24px;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-elev);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  transition: background 120ms, border-color 120ms;
}
.btn:hover {
  background: #1d2330;
  border-color: #2f3746;
  text-decoration: none;
}
.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #0b0d10;
  font-weight: 500;
}
.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  color: #0b0d10;
}
.btn .size {
  color: var(--text-muted);
  font-size: 12px;
  font-family: var(--mono);
}
.btn-primary .size {
  color: #0b0d10;
  opacity: 0.7;
}

.notes {
  border-top: 1px solid var(--border);
  padding-top: 20px;
}
.markdown {
  color: var(--text);
}
.markdown h1,
.markdown h2,
.markdown h3 {
  font-size: 14px;
  font-weight: 600;
  margin: 16px 0 8px;
}
.markdown h1:first-child,
.markdown h2:first-child {
  margin-top: 0;
}
.markdown ul {
  margin: 8px 0;
  padding-left: 20px;
}
.markdown li {
  margin: 4px 0;
}
.markdown p {
  margin: 8px 0;
}

/* tables */
.versions {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.versions th,
.versions td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.versions th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.versions tr:last-child td {
  border-bottom: none;
}
.versions td.version-cell {
  font-family: var(--mono);
  font-weight: 500;
}
.versions td.date-cell {
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.versions td.link-cell a {
  font-family: var(--mono);
  font-size: 12px;
}
.versions td.link-cell .size {
  color: var(--text-dim);
  margin-left: 6px;
}

/* footer */
.footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 24px 28px 40px;
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--border);
}
.footer a {
  font-family: var(--mono);
  color: var(--text-dim);
}
.footer a:hover {
  color: var(--text-muted);
  text-decoration: none;
}

/* loading/error states */
.error {
  color: #ff6b6b;
  padding: 12px;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.2);
  border-radius: 6px;
}