:root {
  color-scheme: light;
  --bg: #f6fbf8;
  --surface: #ffffff;
  --text: #172b24;
  --muted: #5d7168;
  --line: #d7eadf;
  --accent: #198754;
  --accent-soft: #e7f6ee;
  --shadow: 0 18px 60px rgba(24, 89, 58, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(231, 246, 238, 0.72), rgba(255, 255, 255, 0) 360px),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
  text-underline-offset: 4px;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(246, 251, 248, 0.88);
  backdrop-filter: blur(14px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(960px, calc(100% - 36px));
  margin: 0 auto;
  padding: 18px 0;
}

.brand {
  color: var(--text);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 0;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.nav-links a {
  color: #37584a;
  font-size: 14px;
  font-weight: 600;
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
}

.content {
  width: min(840px, calc(100% - 36px));
  margin: 0 auto;
  padding: 56px 0 88px;
}

.content-header {
  margin-bottom: 24px;
}

h1 {
  margin: 0;
  color: #102920;
  font-size: 48px;
  line-height: 1.08;
  letter-spacing: 0;
}

h2 {
  margin: 34px 0 10px;
  color: #17332a;
  font-size: 21px;
  line-height: 1.25;
  letter-spacing: 0;
}

h2:first-child {
  margin-top: 0;
}

p,
li {
  color: var(--muted);
}

ul {
  padding-left: 22px;
}

.meta {
  margin: 12px 0 0;
  color: #6b7d75;
  font-size: 14px;
}

.panel {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: clamp(24px, 4vw, 42px);
}

.site-footer {
  border-top: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.78);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: min(960px, calc(100% - 36px));
  margin: 0 auto;
  padding: 22px 0;
  color: var(--muted);
  font-size: 14px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (max-width: 640px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  h1 {
    font-size: 36px;
  }
}