:root {
  --text: #202124;
  --muted: #5f6368;
  --accent: #1a73e8;
  --border: #e2e2e2;
  --max-width: 720px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0 1.5rem;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  line-height: 1.6;
  background: #fff;
}

header.site-header {
  max-width: 960px;
  margin: 0 auto;
  padding: 1.5rem 0 1rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

header.site-header .brand {
  display: flex;
  align-items: center;
  gap: 0.9rem;
}

header.site-header .logo {
  height: 40px;
  width: auto;
}

header.site-header .name {
  font-size: 1.15rem;
  font-weight: bold;
}

nav.site-nav ul {
  list-style: none;
  display: flex;
  gap: 1.5rem;
  padding: 0;
  margin: 0;
  font-size: 0.95rem;
}

nav.site-nav a {
  color: var(--text);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  padding-bottom: 0.2rem;
}

nav.site-nav a:hover,
nav.site-nav a.active {
  border-bottom-color: var(--accent);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 3rem 0 4rem;
  text-align: center;
}

main .subtitle-lines p {
  margin: 0.2rem 0;
  color: var(--muted);
  font-size: 1.05rem;
}

main .subtitle-lines p:first-child {
  font-size: 1.2rem;
  color: var(--text);
}

main h2 {
  font-size: 1.3rem;
  margin-top: 2.5rem;
}

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

.embed {
  width: 100%;
  height: 80vh;
  border: 1px solid var(--border);
  margin-top: 1rem;
}

.notice {
  font-size: 0.95rem;
  color: var(--muted);
  background: #f7f7f7;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  margin-top: 1rem;
}

footer.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding-bottom: 3rem;
  color: var(--muted);
  font-size: 0.85rem;
  text-align: center;
}