:root {
  color-scheme: light dark;
  --bg: #f7f5f0;
  --panel: #ffffff;
  --ink: #20242a;
  --muted: #667085;
  --line: #d9d4c8;
  --accent: #2f6f5e;
  --accent-2: #8b5e34;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111315;
    --panel: #181b1f;
    --ink: #ebedf0;
    --muted: #a7adb5;
    --line: #30353b;
    --accent: #8bd3b5;
    --accent-2: #d3ad7d;
  }
}
* { box-sizing: border-box; }
html { min-height: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  font: 16px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}
a { color: var(--accent); text-underline-offset: 4px; }
.site-header,
.site-main,
.site-footer {
  width: min(960px, calc(100vw - 40px));
  margin: 0 auto;
}
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 28px 0 18px;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 650;
}
.mark {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--accent-2);
  font-size: 18px;
}
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 14px;
}
.nav a { color: var(--muted); text-decoration: none; }
.nav a:hover { color: var(--accent); }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(260px, 0.7fr);
  gap: 48px;
  align-items: center;
  padding: 72px 0 44px;
}
h1 {
  margin: 0 0 18px;
  font-size: clamp(38px, 6vw, 68px);
  line-height: 1.02;
  font-weight: 680;
  letter-spacing: 0;
}
.lede {
  margin: 0;
  max-width: 680px;
  color: var(--muted);
  font-size: 19px;
}
.hexagram-panel {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 22px;
}
.hex-lines {
  display: grid;
  gap: 12px;
  margin: 0 0 20px;
}
.hex-line {
  height: 10px;
  border-radius: 999px;
  background: var(--ink);
  opacity: 0.86;
}
.hex-line.broken {
  background: linear-gradient(90deg, var(--ink) 0 42%, transparent 42% 58%, var(--ink) 58% 100%);
}
.panel-label { color: var(--muted); font-size: 14px; }
.sections {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  padding: 18px 0 64px;
}
.section {
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.section h2 {
  margin: 0 0 8px;
  font-size: 18px;
  line-height: 1.3;
}
.section p { margin: 0; color: var(--muted); }
.content {
  max-width: 740px;
  padding: 54px 0 80px;
}
.content h1 { font-size: clamp(34px, 5vw, 54px); }
.content p, .content li { color: var(--muted); }
.site-footer {
  padding: 28px 0 42px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
}
@media (max-width: 760px) {
  .site-header { align-items: flex-start; flex-direction: column; }
  .hero { grid-template-columns: 1fr; padding-top: 48px; }
  .sections { grid-template-columns: 1fr; }
}