:root {
  --bg: #f6f1e8;
  --card: #ffffff;
  --text: #1e2a32;
  --muted: #66737c;
  --primary: #1f7a5a;
  --primary-dark: #15583f;
  --accent: #d99a3a;
  --line: #e4dacb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(217,154,58,0.18), transparent 32rem),
    radial-gradient(circle at bottom right, rgba(31,122,90,0.16), transparent 28rem),
    var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a {
  color: var(--primary);
}

.header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--line);
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
}

.nav {
  max-width: 960px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.brand {
  font-weight: 800;
  letter-spacing: 0.2px;
  text-decoration: none;
  color: var(--text);
  font-size: 1.2rem;
}

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

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

.main {
  max-width: 960px;
  margin: 0 auto;
  padding: 56px 24px;
}

.hero {
  display: grid;
  gap: 24px;
  align-items: center;
}

.badge {
  display: inline-flex;
  width: fit-content;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(31,122,90,0.12);
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.9rem;
}

h1 {
  font-size: clamp(2.3rem, 7vw, 4.8rem);
  line-height: 1.02;
  margin: 12px 0;
}

h2 {
  margin-top: 0;
  font-size: 1.6rem;
}

.lead {
  font-size: 1.18rem;
  color: var(--muted);
  max-width: 720px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 12px 18px;
  border-radius: 14px;
  text-decoration: none;
  font-weight: 800;
  border: 1px solid transparent;
}

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

.button.primary:hover {
  background: var(--primary-dark);
}

.button.secondary {
  background: #fff;
  color: var(--text);
  border-color: var(--line);
}

.grid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin-top: 36px;
}

.card {
  background: rgba(255,255,255,0.84);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px;
  box-shadow: 0 12px 34px rgba(30,42,50,0.08);
}

.card strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.05rem;
}

.footer {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 24px 42px;
  color: var(--muted);
  font-size: 0.92rem;
  border-top: 1px solid var(--line);
}

.notice {
  background: rgba(217,154,58,0.15);
  border: 1px solid rgba(217,154,58,0.35);
  padding: 16px;
  border-radius: 18px;
  margin: 22px 0;
}

.code-box {
  word-break: break-word;
  font-family: Consolas, Monaco, monospace;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
}

@media (max-width: 620px) {
  .nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .main {
    padding-top: 36px;
  }
}