*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --brand: #019444;
  --brand-dark: #006c32;
  --accent: #e17125;
  --text: #212121;
  --text-muted: #555555;
  --border: #e0e0e0;
  --bg: #f9f9f9;
}

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────── */
header {
  background: #fff;
  border-bottom: 3px solid var(--brand);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

header img {
  height: 56px;
  width: auto;
}

header span {
  color: var(--text-muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-left: 1px solid var(--border);
  padding-left: 1.5rem;
}

/* ── Layout ──────────────────────────────────────────────── */
.page-wrap {
  max-width: 800px;
  margin: 2rem auto 4rem;
  padding: 0 1rem;
}

nav {
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
}

nav a {
  color: var(--brand);
  text-decoration: none;
}
nav a:hover {
  text-decoration: underline;
}

main {
  background: #fff;
  border: 1px solid var(--border);
  border-top: 3px solid var(--brand);
  border-radius: 0 0 8px 8px;
  padding: 2.5rem 3rem;
}

/* ── Typography ──────────────────────────────────────────── */
h1 {
  font-size: 1.75rem;
  color: var(--brand-dark);
  margin-bottom: 0.25rem;
}
h2 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--brand-dark);
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.25rem;
}
h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-top: 1.25rem;
  margin-bottom: 0.25rem;
  color: #333;
}

p {
  margin-top: 0.75rem;
}
ul,
ol {
  margin-top: 0.75rem;
  padding-left: 1.5rem;
}
li {
  margin-top: 0.25rem;
}

a {
  color: var(--brand);
}
a:hover {
  color: var(--brand-dark);
  text-decoration: underline;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Meta bar ────────────────────────────────────────────── */
.meta {
  display: flex;
  gap: 1.25rem;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.meta span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}
.meta span:not(:first-child)::before {
  content: "·";
  color: var(--border);
}

.version {
  background: var(--brand);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  letter-spacing: 0.03em;
}

/* ── Index link list ─────────────────────────────────────── */
.link-list {
  list-style: none;
  padding: 0;
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.link-list li a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  border-left: 3px solid var(--brand);
  border-radius: 0 6px 6px 0;
  font-weight: 500;
  text-decoration: none;
  color: var(--text);
  transition:
    border-color 0.15s,
    background 0.15s;
}

.link-list li a:hover {
  background: #f0faf4;
  border-left-color: var(--brand-dark);
  color: var(--brand-dark);
}

.link-list li a::after {
  content: "→";
  margin-left: auto;
  color: var(--brand);
}