:root {
  --bg: #f6f4f1;
  --surface: #ffffff;
  --ink: #1a1a1a;
  --muted: #5c5c5c;
  --line: #e4e0da;
  --accent: #1f5c45;
  --accent-hover: #174833;
  --max: 42rem;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Manrope, "Segoe UI", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(31, 92, 69, 0.08), transparent),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(31, 92, 69, 0.05), transparent),
    var(--bg);
  line-height: 1.65;
  min-height: 100vh;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

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

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(246, 244, 241, 0.9);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header__inner,
.site-footer__inner,
.page,
.hero {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.brand {
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.05rem;
}

.nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

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

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

.hero {
  padding: 2.5rem 0 1.5rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.meta {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.page {
  padding-bottom: 3rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.5rem 1.35rem;
}

@media (min-width: 640px) {
  .card {
    padding: 2rem;
  }
}

.card h2 {
  margin: 2rem 0 0.75rem;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

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

.card p,
.card li {
  color: var(--ink);
}

.card ul {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.card li + li {
  margin-top: 0.4rem;
}

.card ol {
  margin: 0.5rem 0 0;
  padding-left: 1.2rem;
}

.card ol li + li {
  margin-top: 0.55rem;
}

.note {
  margin-top: 1.5rem;
  padding: 1rem 1.1rem;
  background: rgba(31, 92, 69, 0.06);
  border-radius: 8px;
  border: 1px solid rgba(31, 92, 69, 0.15);
}

.note p {
  margin: 0;
}

.home-links {
  display: grid;
  gap: 1rem;
  margin-top: 1.5rem;
}

.home-link {
  display: block;
  padding: 1.25rem 1.35rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.home-link:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
  color: inherit;
}

.home-link strong {
  display: block;
  color: var(--accent);
  margin-bottom: 0.25rem;
}

.home-link span {
  color: var(--muted);
  font-size: 0.95rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2rem;
  color: var(--muted);
  font-size: 0.9rem;
}

.site-footer p {
  margin: 0;
}