:root {
  --bg: #0b0d10;
  --bg-2: #14171c;
  --card: #1a1e25;
  --line: #262b34;
  --text: #e8eaed;
  --muted: #9aa3af;
  --orange: #f7931a;
  --orange-2: #ffb14d;
  --green: #3ddc84;
  --red: #ff6b6b;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 920px; margin: 0 auto; padding: 0 20px; }

.hero {
  background:
    radial-gradient(900px 400px at 80% -10%, rgba(247,147,26,0.18), transparent 60%),
    radial-gradient(700px 300px at 10% 0%, rgba(247,147,26,0.08), transparent 60%),
    var(--bg);
  border-bottom: 1px solid var(--line);
  padding: 56px 0 40px;
  text-align: center;
}
.logo {
  width: 72px; height: 72px; line-height: 72px;
  margin: 0 auto 14px;
  background: var(--orange);
  color: white;
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 44px;
  font-weight: 700;
  box-shadow: 0 8px 30px rgba(247,147,26,0.35);
}
.hero h1 {
  font-size: 56px;
  margin: 0 0 10px;
  letter-spacing: -1px;
  background: linear-gradient(180deg, #fff, #ffd9a8);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.tagline { color: var(--muted); max-width: 560px; margin: 0 auto 28px; font-size: 17px; }

.price-card {
  display: inline-block;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px 24px;
  min-width: 280px;
  text-align: left;
  box-shadow: 0 10px 30px rgba(0,0,0,0.35);
}
.price-label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }
.price-value { font-size: 38px; font-weight: 700; margin: 4px 0 6px; font-variant-numeric: tabular-nums; }
.price-meta { color: var(--muted); font-size: 13px; }
.price-meta strong { color: var(--text); font-weight: 600; }
.price-meta .sep { margin: 0 8px; opacity: 0.5; }
.price-source { color: #6c7480; font-size: 11px; margin-top: 8px; }
.change.up { color: var(--green); }
.change.down { color: var(--red); }

main section { padding: 40px 0; border-bottom: 1px solid var(--line); }
main section:last-of-type { border-bottom: none; }
h2 { font-size: 24px; margin: 0 0 14px; color: var(--orange-2); }
p { color: #d4d8de; }

.facts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-top: 14px;
}
.fact {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
}
.fact .k { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
.fact .v { font-size: 20px; font-weight: 700; margin-top: 4px; }

.how-list { padding-left: 20px; }
.how-list li { margin-bottom: 10px; }
.how-list li strong { color: var(--orange-2); }

table.halvings {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
  font-size: 14px;
}
table.halvings th, table.halvings td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
table.halvings th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.5px; }
table.halvings tbody tr:hover { background: rgba(247,147,26,0.05); }

.timeline { list-style: none; padding: 0; margin: 14px 0 0; }
.timeline li {
  position: relative;
  padding: 10px 0 10px 28px;
  border-left: 2px solid var(--line);
  margin-left: 8px;
}
.timeline li::before {
  content: "";
  position: absolute;
  left: -7px; top: 18px;
  width: 12px; height: 12px;
  background: var(--orange);
  border-radius: 50%;
  box-shadow: 0 0 0 3px var(--bg);
}
.timeline .year { color: var(--orange-2); font-weight: 700; margin-right: 8px; }

.links { padding-left: 20px; }
.links a { color: var(--orange-2); text-decoration: none; }
.links a:hover { text-decoration: underline; }

footer { padding: 24px 0 40px; color: var(--muted); font-size: 13px; text-align: center; }

@media (max-width: 600px) {
  .hero { padding: 40px 0 28px; }
  .hero h1 { font-size: 40px; }
  .price-value { font-size: 30px; }
}