:root {
  color-scheme: light;
  --background: #f7f8f5;
  --surface: #ffffff;
  --text: #142326;
  --muted: #5c6b70;
  --line: #d9e0df;
  --accent: #0f5b5b;
  --accent-soft: #dbecea;
  --warning: #8a5a00;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--background);
}

body {
  margin: 0;
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.page {
  width: min(840px, calc(100% - 32px));
  margin: 0 auto;
  padding: 44px 0 56px;
}

header {
  padding: 20px 0 28px;
  border-bottom: 1px solid var(--line);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0;
  text-decoration: none;
}

.mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(145deg, #0f5b5b, #166a7c);
  position: relative;
  box-shadow: inset 0 0 0 1px rgb(255 255 255 / 22%);
}

.mark::after {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  width: 12px;
  height: 12px;
  border-radius: 3px;
  background: #f2c65a;
}

nav {
  display: flex;
  gap: 16px;
  margin-top: 18px;
  flex-wrap: wrap;
}

nav a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

main {
  padding-top: 34px;
}

h1 {
  margin: 0 0 10px;
  font-size: clamp(2rem, 6vw, 3.3rem);
  line-height: 1.05;
  letter-spacing: 0;
}

h2 {
  margin: 36px 0 10px;
  font-size: 1.25rem;
  letter-spacing: 0;
}

h3 {
  margin: 24px 0 8px;
  font-size: 1rem;
  letter-spacing: 0;
}

p {
  margin: 10px 0;
}

ul,
ol {
  padding-left: 1.4rem;
}

li {
  margin: 6px 0;
}

.lede {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 680px;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
}

.panel {
  margin-top: 24px;
  padding: 18px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
}

.links {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 24px;
}

.link-card {
  display: block;
  padding: 18px;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  text-decoration: none;
}

.link-card strong {
  display: block;
  color: var(--accent);
  margin-bottom: 4px;
}

.notice {
  color: var(--warning);
  background: #fff7df;
  border: 1px solid #ecd28d;
  border-radius: 10px;
  padding: 14px 16px;
}

code {
  padding: 2px 5px;
  background: var(--accent-soft);
  border-radius: 5px;
}

footer {
  margin-top: 44px;
  padding-top: 22px;
  color: var(--muted);
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
}

@media (max-width: 560px) {
  .page {
    width: min(100% - 24px, 840px);
    padding-top: 24px;
  }

  header {
    padding-top: 12px;
  }
}