:root {
  color-scheme: light;
  --paper: #fbf7ef;
  --surface: #fffdf8;
  --ink: #2f2a24;
  --muted: #6f675d;
  --line: #e6dccd;
  --accent: #8a6f4d;
  --accent-soft: #efe4d3;
  --shadow: rgba(91, 72, 50, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", sans-serif;
  background: var(--paper);
  color: var(--ink);
}

body {
  margin: 0;
  line-height: 1.75;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.2em;
}

.site-header,
.site-footer {
  max-width: 880px;
  margin: 0 auto;
  padding: 28px 22px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
}

.brand {
  margin: 0;
  font-size: 1.08rem;
  letter-spacing: 0;
}

.nav {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.page {
  max-width: 880px;
  margin: 0 auto;
  padding: 34px 22px 52px;
}

.hero {
  padding: 34px 0 28px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.92rem;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.12;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 10px;
  font-size: 1.35rem;
  line-height: 1.3;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 6px;
  font-size: 1.05rem;
  line-height: 1.35;
  letter-spacing: 0;
}

p {
  margin: 0 0 14px;
}

ul {
  margin: 0;
  padding-left: 1.25rem;
}

.summary {
  max-width: 680px;
  margin-top: 18px;
  color: var(--muted);
  font-size: 1.06rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 12px 30px var(--shadow);
  padding: 22px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 16px;
  margin-top: 20px;
}

.link-card {
  display: block;
  color: inherit;
  text-decoration: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
}

.link-card strong {
  display: block;
  margin-bottom: 6px;
}

.link-card span {
  color: var(--muted);
}

.notice {
  background: var(--accent-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  color: var(--ink);
}

.meta {
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

@media (max-width: 640px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .page {
    padding-top: 24px;
  }
}