:root {
  --bg: #ffffff;
  --text: #0f172a;
  --muted: #64748b;
  --border: #e5e7eb;
  --accent: #2563eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, Ubuntu, Cantarell;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

/* Layout */

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Header */

.site-header {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.2rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.brand-mark {
  font-size: 1.2rem;
}

.site-nav a {
  margin-left: 1.5rem;
  text-decoration: none;
  color: var(--muted);
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--text);
}

/* Hero */

.hero {
  max-width: 720px;
  margin: 4rem auto 5rem;
  padding: 0 1rem;
}

.hero h1 {
  font-size: 2.3rem;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.05rem;
  color: var(--muted);
}

.hero-actions {
  margin-top: 2rem;
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  margin-right: 1rem;
  padding: 0.6rem 1.1rem;
  border-radius: 6px;
  font-size: 0.95rem;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
}

.btn-secondary {
  border: 1px solid var(--border);
  color: var(--text);
}

/* Sections */

section {
  margin-bottom: 5rem;
}

h2 {
  font-size: 1.4rem;
  margin-bottom: 1.2rem;
}

/* Lists */

.item-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.item-list li {
  border-top: 1px solid var(--border);
}

.item-list a,
.item-list div {
  display: block;
  padding: 1.2rem 0;
  text-decoration: none;
  color: inherit;
}

.item-list strong {
  display: block;
}

.item-list span {
  font-size: 0.9rem;
  color: var(--muted);
}

/* Footer */

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

.site-footer a {
  color: inherit;
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}