:root {
  color-scheme: light;
  --ink: #112018;
  --muted: #4c5a52;
  --soft: #f3f5f2;
  --paper: #fbfcfa;
  --accent: #1e6d4c;
  --accent-2: #b17c2f;
  --accent-soft: rgba(30, 109, 76, 0.12);
  --border: #dfe5df;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --shadow: 0 16px 40px rgba(15, 23, 18, 0.08);
  --shadow-soft: 0 10px 24px rgba(15, 23, 18, 0.06);
  --max-width: 1160px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "DM Sans", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top, rgba(30, 109, 76, 0.06), transparent 45%), var(--paper);
  line-height: 1.7;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.container {
  width: min(var(--max-width), 92%);
  margin: 0 auto;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 10px;
  background: #fff;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  color: var(--accent);
  z-index: 999;
}

.skip-link:focus {
  left: 1rem;
}

.top-bar {
  background: #0f2a1c;
  color: #e6f2ea;
  font-size: 0.9rem;
}

.top-bar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 0;
  gap: 1rem;
  flex-wrap: wrap;
}

.top-bar a {
  color: #e6f2ea;
  font-weight: 600;
}

.header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(251, 252, 250, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 0;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.brand span {
  font-family: "Source Serif 4", "Georgia", serif;
  font-size: 1.3rem;
  letter-spacing: 0.02em;
  font-weight: 600;
}

.brand small {
  color: var(--muted);
  font-size: 0.85rem;
}

.nav-links {
  display: flex;
  gap: 1.4rem;
  align-items: center;
  font-weight: 600;
}

.nav-links a {
  color: var(--muted);
}

.nav-links a.active {
  color: var(--accent);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  background: transparent;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
}

.hero {
  padding: 4rem 0 2.5rem;
}

.hero-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: center;
}

.hero h1 {
  font-family: "Source Serif 4", "Georgia", serif;
  font-size: clamp(2rem, 3vw + 1rem, 3.2rem);
  margin: 0 0 1rem;
  line-height: 1.1;
}

.hero p {
  color: var(--muted);
  margin: 0 0 1.5rem;
  font-size: 1.05rem;
}

.hero-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.hero-card h3 {
  margin-top: 0;
  font-size: 1.1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.3rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
}

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

.btn-secondary {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}

.section {
  padding: 2.5rem 0;
}

.section-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.section-heading h2 {
  font-family: "Source Serif 4", "Georgia", serif;
  font-size: 2rem;
  margin: 0;
}

.section-heading p {
  color: var(--muted);
  margin: 0;
}

.grid {
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.4rem;
  box-shadow: var(--shadow-soft);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card small {
  color: var(--muted);
}

.card h3 {
  margin: 0;
  font-size: 1.2rem;
}

.card a {
  color: var(--accent);
  font-weight: 600;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--accent);
}

.callout {
  background: #fffaf2;
  border: 1px solid #f1d9b5;
  border-radius: var(--radius-md);
  padding: 1.2rem 1.4rem;
  display: grid;
  gap: 0.5rem;
}

.callout strong {
  color: #7a4d16;
}

.article-hero {
  padding: 3rem 0 2rem;
}

.article-hero h1 {
  font-family: "Source Serif 4", "Georgia", serif;
  margin-bottom: 0.6rem;
}

.breadcrumbs {
  font-size: 0.9rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.article-body {
  display: grid;
  gap: 2rem;
  grid-template-columns: minmax(0, 1fr);
}

.article-body h2,
.article-body h3 {
  font-family: "Source Serif 4", "Georgia", serif;
}

.article-body ul {
  padding-left: 1.1rem;
}

.article-body .note {
  border-left: 3px solid var(--accent);
  padding-left: 1rem;
  color: var(--muted);
}

.toc {
  background: var(--soft);
  padding: 1rem 1.2rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
}

.toc ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.4rem;
}

.newsletter {
  background: #0f2a1c;
  color: #e6f2ea;
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: grid;
  gap: 1rem;
}

.newsletter input {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

.footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  background: #f6f8f5;
}

.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

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

.footer .brand {
  gap: 0.4rem;
}

.meta-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.9rem;
}

.badge {
  background: #e9f0ea;
  color: var(--accent);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.article-aside {
  display: grid;
  gap: 1rem;
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    inset: 0 0 auto 0;
    background: #fbfcfa;
    padding: 1.2rem;
    flex-direction: column;
    align-items: flex-start;
    transform: translateY(-120%);
    transition: transform 0.25s ease;
    border-bottom: 1px solid var(--border);
  }

  .nav-links.open {
    transform: translateY(0);
  }

  .nav-toggle {
    display: inline-flex;
  }
}