:root {
  --bg: #f6f4f0;
  --paper: #fffdf8;
  --ink: #1c1916;
  --muted: #5c564e;
  --line: #e4ded4;
  --accent: #6b4f9a;
  --accent-soft: #efe8f8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  font-family: "Noto Sans SC", "SF Pro Text", "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.7;
}

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

.wrap {
  width: min(860px, calc(100% - 40px));
  margin: 0 auto;
  padding: 32px 0 72px;
}

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

.site-header {
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.brand {
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: inherit;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 14px;
}

.hero {
  margin: 36px 0 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0 0 12px;
  font-size: 36px;
  line-height: 1.25;
}

.lead {
  margin: 0;
  color: var(--muted);
}

.card-grid {
  display: grid;
  gap: 16px;
}

.card,
.paper {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.card {
  padding: 20px 22px;
}

.paper {
  padding: 28px 28px 36px;
}

.card h2,
.paper h2 {
  margin: 28px 0 10px;
  font-size: 22px;
}

.card h2:first-child,
.paper h2:first-child,
.paper > h1 {
  margin-top: 0;
}

.meta {
  color: var(--muted);
  font-size: 14px;
}

.link-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.link-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.link-list code {
  overflow-wrap: anywhere;
  color: var(--muted);
}

.chip {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
}

.site-footer {
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  h1 {
    font-size: 28px;
  }

  .site-header,
  .site-footer,
  .link-list li {
    flex-direction: column;
  }
}