:root {
  --bg: #f6f4ef;
  --paper: #ffffff;
  --ink: #1a1a1a;
  --muted: #5c5c5c;
  --line: #e4e0d8;
  --accent: #0f6b4c;
  --accent-soft: #e8f4ef;
  --header: #0b3d2e;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #dceee6 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #f0e6d8 0%, transparent 50%),
    var(--bg);
  line-height: 1.65;
}

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

a:hover {
  text-decoration: underline;
}

.topbar {
  background: var(--header);
  color: #fff;
  padding: 14px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand {
  font-weight: 700;
  letter-spacing: 0.02em;
  font-size: 1.05rem;
}

.brand span {
  opacity: 0.75;
  font-weight: 500;
  margin-left: 8px;
}

.nav {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.nav a {
  color: #fff;
  opacity: 0.9;
}

.wrap {
  max-width: 880px;
  margin: 28px auto 64px;
  padding: 0 18px;
}

.card {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 36px 40px 48px;
  box-shadow: 0 12px 40px rgba(17, 40, 30, 0.06);
}

h1 {
  margin: 0 0 8px;
  font-size: 2rem;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--muted);
  margin: 0 0 8px;
  font-size: 1.05rem;
}

.meta {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

h2 {
  margin: 32px 0 12px;
  font-size: 1.25rem;
  color: var(--header);
}

h3 {
  margin: 22px 0 8px;
  font-size: 1.05rem;
}

p,
li {
  color: #222;
}

ul {
  padding-left: 1.2rem;
}

li {
  margin: 6px 0;
}

.note {
  background: var(--accent-soft);
  border-left: 4px solid var(--accent);
  padding: 12px 14px;
  border-radius: 8px;
  margin: 16px 0;
}

.contact-box {
  margin-top: 28px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #faf9f6;
}

.footer {
  max-width: 880px;
  margin: 0 auto 40px;
  padding: 0 18px;
  color: var(--muted);
  font-size: 0.9rem;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 720px) {
  .card {
    padding: 24px 18px 32px;
  }

  h1 {
    font-size: 1.6rem;
  }

  .topbar {
    flex-direction: column;
    align-items: flex-start;
  }
}