:root {
  --bg: #f5f7f4;
  --paper: #ffffff;
  --ink: #1b2320;
  --muted: #4a5a53;
  --brand: #0f766e;
  --brand-2: #134e4a;
  --line: #d6dfda;
  --warm: #f1efe7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 8% 8%, #f9f2db 0, transparent 34%),
    radial-gradient(circle at 90% 22%, #d9efe7 0, transparent 30%),
    var(--bg);
}

a {
  color: var(--brand-2);
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.93);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 2;
}

.wrap {
  width: min(1080px, 94vw);
  margin: 0 auto;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  text-decoration: none;
  font-weight: 800;
  letter-spacing: 0.3px;
  color: var(--ink);
}

.nav-links {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-weight: 600;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--brand-2);
}

.hero {
  display: grid;
  gap: 1.2rem;
  padding: 4.2rem 0 2rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.08;
}

.hero p {
  margin: 0;
  color: var(--muted);
  max-width: 70ch;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
}

.btn {
  display: inline-block;
  border-radius: 999px;
  text-decoration: none;
  padding: 0.62rem 1rem;
  font-weight: 700;
}

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

.btn-secondary {
  border: 1px solid var(--line);
  color: var(--ink);
  background: #fff;
}

.grid {
  display: grid;
  gap: 1rem;
}

.cards-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1rem;
}

.card h3 {
  margin: 0 0 0.4rem;
}

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

.section {
  padding: 1rem 0 2rem;
}

.section h2 {
  margin-top: 0;
}

.split {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1rem;
}

.note {
  background: var(--warm);
  border: 1px solid #dfd7c1;
  border-radius: 10px;
  padding: 0.85rem;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 10px;
}

th,
td {
  text-align: left;
  padding: 0.75rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  vertical-align: top;
}

th {
  color: var(--ink);
  background: #f9fbf9;
}

.list {
  margin: 0;
  padding-left: 1.15rem;
}

.footer {
  border-top: 1px solid var(--line);
  color: var(--muted);
  padding: 1.2rem 0 2rem;
  margin-top: 1.5rem;
}

.page h1 {
  margin: 2rem 0 0.5rem;
}

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

.page .card {
  margin: 1rem 0;
}

@media (max-width: 840px) {
  .cards-3 {
    grid-template-columns: 1fr;
  }

  .split {
    grid-template-columns: 1fr;
  }
}