:root {
  --color-bg: #fdfaf6;
  --color-surface: #ffffff;
  --color-text: #1f2933;
  --color-muted: #5f6b7a;
  --color-accent: #2f6b8f;
  --color-accent-dark: #1f4d6b;
  --color-border: #e6dfd4;
  --max-width: 880px;
  --radius: 10px;
  --shadow: 0 6px 24px rgba(31, 41, 51, 0.08);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover,
a:focus {
  color: var(--color-accent-dark);
  text-decoration: underline;
}

/* Header / nav */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

.site-nav {
  display: flex;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--color-muted);
  font-weight: 500;
  font-size: 0.95rem;
}

.site-nav a.is-active {
  color: var(--color-text);
  border-bottom: 2px solid var(--color-accent);
  padding-bottom: 2px;
}

/* Layout */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

h1 {
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  line-height: 1.2;
  margin: 0.25rem 0 1.25rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.4rem;
  margin: 2rem 0 0.5rem;
  font-weight: 600;
}

h3 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.25rem;
  font-weight: 600;
}

p {
  margin: 0.5rem 0 1rem;
}

/* Hero image */
.hero-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.75rem;
  display: block;
  background: #d6dde4;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

/* Group cards */
.group-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0;
  display: grid;
  gap: 1rem;
}

.group-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow);
}

.group-card h3 {
  margin-top: 0;
}

.group-card .email {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.95rem;
  display: inline-block;
  margin-bottom: 0.5rem;
}

.group-card .group-link {
  display: inline-block;
  font-size: 0.9rem;
  margin-left: 0.75rem;
  margin-bottom: 0.5rem;
}

.group-card .group-link::before {
  content: "·";
  color: var(--color-muted);
  margin-right: 0.75rem;
  text-decoration: none;
  display: inline-block;
}

.group-card dl {
  margin: 0.75rem 0 0;
}

.group-card dt {
  font-weight: 600;
  margin-top: 0.6rem;
  color: var(--color-text);
}

.group-card dd {
  margin: 0.15rem 0 0;
  color: var(--color-muted);
}

/* Numbered steps (getting started) */
.steps {
  padding-left: 1.4rem;
  margin: 1rem 0 1.5rem;
}

.steps > li {
  margin-bottom: 1rem;
}

.steps > li > p {
  color: var(--color-muted);
  margin: 0.25rem 0 0.25rem;
}

.steps ul {
  margin: 0.25rem 0 0.25rem;
  color: var(--color-muted);
}

.step-image {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 0.75rem 0 0.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.snags {
  padding-left: 1.25rem;
  margin: 0.5rem 0 1.5rem;
}

.snags li {
  margin-bottom: 0.75rem;
}

code {
  background: #f1ece3;
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

/* Inline group bullet list (home) */
.group-summary {
  padding-left: 1.25rem;
  margin: 0.5rem 0 1.5rem;
}

.group-summary li {
  margin-bottom: 0.5rem;
}

/* CTA */
.cta {
  display: block;
  width: 100%;
  text-align: center;
  background: #1f2933;
  color: #fff;
  padding: 0.95rem 1.25rem;
  border-radius: var(--radius);
  font-weight: 600;
  margin: 2rem 0 0;
  letter-spacing: 0.01em;
}

.cta:hover,
.cta:focus {
  background: #000;
  color: #fff;
  text-decoration: none;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 1.25rem 2rem;
  color: var(--color-muted);
  font-size: 0.85rem;
  text-align: center;
}

.site-footer a {
  color: var(--color-muted);
}

@media (max-width: 480px) {
  .site-header__inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}