:root {
  --ink: #1c241e;
  --muted: #5c675f;
  --paper: #f7f4ee;
  --card: #fffdf8;
  --line: #e4ddd2;
  --accent: #2f6a4a;
  --accent-dark: #214a34;
  --max: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 18px/1.6 "Source Sans 3", "Segoe UI", sans-serif;
}

a { color: var(--accent-dark); }
img { max-width: 100%; }

.wrap {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.logo {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 22px;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.nav {
  display: flex;
  gap: 22px;
}
.nav a {
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
}
.nav a:hover,
.nav a[aria-current="page"] {
  color: var(--accent);
}
.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--card);
  padding: 8px 12px;
  font: inherit;
  font-size: 14px;
  font-weight: 600;
}

.hero {
  padding: 72px 0 48px;
  border-bottom: 1px solid var(--line);
}
.kicker {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 12px;
}
.hero h1,
.page-title {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(36px, 6vw, 56px);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin: 0 0 16px;
  max-width: 16ch;
}
.lede {
  max-width: 42em;
  color: var(--muted);
  font-size: 20px;
  margin: 0 0 28px;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}
.btn {
  display: inline-block;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-size: 15px;
  font-weight: 700;
}
.btn:hover { background: var(--accent-dark); }
.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
}

.section { padding: 56px 0; }
.section h2 {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 32px;
  margin: 0 0 8px;
}
.section-intro {
  color: var(--muted);
  margin: 0 0 28px;
  max-width: 40em;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  padding: 22px;
  display: flex;
  flex-direction: column;
  min-height: 280px;
}
.card .meta {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 10px;
}
.card h3 {
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 22px;
  line-height: 1.3;
  margin: 0 0 10px;
}
.card h3 a {
  color: inherit;
  text-decoration: none;
}
.card h3 a:hover { color: var(--accent); }
.card p {
  color: var(--muted);
  font-size: 16px;
  margin: 0 0 16px;
  flex: 1;
}
.card .more {
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
}

.notice {
  border: 1px solid var(--line);
  background: #efe8dc;
  padding: 20px 22px;
  font-size: 15px;
  color: var(--muted);
}
.notice strong { color: var(--ink); }

.split {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: start;
}
.prose h1,
.prose h2 {
  font-family: "Source Serif 4", Georgia, serif;
}
.prose h1 { font-size: 42px; line-height: 1.15; margin: 0 0 12px; }
.prose h2 { font-size: 26px; margin: 32px 0 10px; }
.prose p { margin: 0 0 16px; }
.prose ul { padding-left: 20px; color: var(--muted); }
.article-meta {
  color: var(--muted);
  font-size: 15px;
  margin-bottom: 28px;
}

.form {
  display: grid;
  gap: 14px;
  max-width: 520px;
}
.form label {
  display: grid;
  gap: 6px;
  font-size: 14px;
  font-weight: 700;
}
.form input,
.form textarea,
.form select {
  font: inherit;
  padding: 10px 12px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
}
.form button {
  justify-self: start;
  border: 0;
  cursor: pointer;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 36px 0 48px;
  font-size: 14px;
  color: var(--muted);
}
.site-footer .wrap {
  display: grid;
  gap: 16px;
}
.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-nav a {
  color: var(--muted);
  text-decoration: none;
}
.footer-nav a:hover { color: var(--ink); }

@media (max-width: 860px) {
  .grid, .split { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .nav-toggle { display: inline-block; }
  .nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--card);
    border-bottom: 1px solid var(--line);
    padding: 12px 20px 20px;
    flex-direction: column;
    gap: 12px;
  }
  .nav.open { display: flex; }
  .site-header { position: relative; }
}