:root {
  --fg: #1a1a1a;
  --fg-muted: #5a5a5a;
  --bg: #fafaf7;
  --accent: #c0392b;
  --line: #d8d4cb;
  --code-bg: #f0ede4;
  --link: #1d4d8f;
  --link-hover: #c0392b;
  --max: 740px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter",
               "Helvetica Neue", Arial, "PingFang SC", "Noto Sans CJK SC",
               sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 22px;
}

header {
  border-bottom: 1px solid var(--line);
  padding: 14px 0;
  background: var(--bg);
}

header .wrap {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-family: "JetBrains Mono", "SF Mono", "Menlo", monospace;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}
.brand .dot { color: var(--accent); }

nav a {
  font-size: 14px;
  color: var(--fg-muted);
  text-decoration: none;
  margin-left: 18px;
}
nav a:hover { color: var(--accent); }

main { padding: 36px 0 80px; }

a {
  color: var(--link);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}
a:hover { color: var(--link-hover); }

h1 {
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.015em;
  margin: 0 0 16px;
}

h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 56px 0 14px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin: 22px 0 6px;
}

p { margin: 0 0 14px; }

.lede {
  font-size: 18px;
  color: var(--fg);
  margin-bottom: 22px;
}

.status {
  font-size: 14px;
  color: var(--fg-muted);
  border-left: 3px solid var(--accent);
  padding: 8px 12px;
  background: rgba(192, 57, 43, 0.04);
}

.badge {
  display: inline-block;
  background: var(--accent);
  color: white;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 3px;
  margin-right: 8px;
  vertical-align: middle;
}

.stat {
  display: flex;
  align-items: flex-start;
  gap: 22px;
  margin: 18px 0;
  padding: 16px 18px;
  background: white;
  border: 1px solid var(--line);
  border-radius: 4px;
}

.stat .big {
  font-family: "JetBrains Mono", "SF Mono", "Menlo", monospace;
  font-size: 36px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.02em;
  flex-shrink: 0;
  min-width: 110px;
}

.stat .legend {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.5;
}

.methods {
  list-style: none;
  padding: 0;
  counter-reset: m;
}

.methods li {
  counter-increment: m;
  position: relative;
  padding: 10px 0 6px 36px;
  margin-bottom: 12px;
}

.methods li::before {
  content: counter(m);
  position: absolute;
  left: 0;
  top: 10px;
  width: 24px;
  height: 24px;
  background: var(--accent);
  color: white;
  border-radius: 50%;
  text-align: center;
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 600;
  line-height: 24px;
}

.methods h3 { margin-top: 0; }
.methods p { font-size: 15px; color: var(--fg-muted); margin-bottom: 0; }

.rules ul {
  padding-left: 22px;
  margin: 0;
}

.rules li {
  margin-bottom: 10px;
  font-size: 15px;
  color: var(--fg-muted);
}

.rules li em {
  font-style: normal;
  font-weight: 600;
  color: var(--fg);
  font-family: "JetBrains Mono", "SF Mono", "Menlo", monospace;
  font-size: 14px;
  background: var(--code-bg);
  padding: 1px 5px;
  border-radius: 3px;
}

.roadmap {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin: 12px 0;
}

.roadmap th, .roadmap td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}

.roadmap th {
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-muted);
  font-weight: 600;
}

.roadmap td:first-child {
  font-family: "JetBrains Mono", monospace;
  font-weight: 600;
  width: 70px;
}

.roadmap td:last-child { width: 100px; }

.roadmap em {
  font-style: normal;
  font-weight: 600;
  color: var(--accent);
}

footer {
  border-top: 1px solid var(--line);
  padding: 22px 0 40px;
  font-size: 13px;
  color: var(--fg-muted);
}

footer a { color: var(--fg-muted); }

@media (max-width: 540px) {
  body { font-size: 16px; }
  h1 { font-size: 26px; }
  .stat { flex-direction: column; gap: 8px; }
  .stat .big { font-size: 30px; min-width: 0; }
  nav a { margin-left: 12px; }
}