:root {
  --bg: #f5f1ea;
  --bg-accent: #e8efe8;
  --card: rgba(255, 255, 255, 0.8);
  --text: #1f2933;
  --muted: #5b6670;
  --line: rgba(31, 41, 51, 0.12);
  --primary: #264653;
  --primary-strong: #1e3a46;
  --shadow: 0 20px 50px rgba(31, 41, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(38, 70, 83, 0.14), transparent 28%),
    radial-gradient(circle at top right, rgba(151, 191, 160, 0.28), transparent 24%),
    linear-gradient(180deg, var(--bg), var(--bg-accent));
}

a {
  color: inherit;
}

.page-shell {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 32px;
}

.page-shell.narrow {
  width: min(880px, calc(100% - 32px));
}

.hero,
.card,
.page-header,
.article {
  backdrop-filter: blur(10px);
}

.hero {
  padding: 72px 56px;
  border: 1px solid var(--line);
  border-radius: 32px;
  background: var(--card);
  box-shadow: var(--shadow);
}

.eyebrow {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(38, 70, 83, 0.18);
  background: rgba(38, 70, 83, 0.08);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 18px 0 12px;
  font-size: clamp(2.5rem, 6vw, 4.6rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
}

.lead {
  max-width: 64ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 18px;
  border-radius: 999px;
  text-decoration: none;
  border: 1px solid transparent;
  font-weight: 700;
}

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

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

.button.secondary {
  border-color: rgba(31, 41, 51, 0.14);
  background: rgba(255, 255, 255, 0.72);
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 18px;
}

.card,
.page-header,
.article {
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.74);
  box-shadow: var(--shadow);
}

.card {
  padding: 28px;
}

.card h2,
.article h2 {
  margin-top: 0;
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.card p,
.article p,
.article li {
  color: var(--muted);
  line-height: 1.7;
}

.footer {
  display: flex;
  gap: 12px;
  justify-content: space-between;
  flex-wrap: wrap;
  padding: 18px 6px 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.page-header,
.article {
  padding: 32px;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 3.2rem);
  margin-bottom: 6px;
}

.updated {
  margin: 0;
  color: var(--muted);
}

.back-link {
  display: inline-block;
  margin-bottom: 18px;
  color: var(--primary);
  text-decoration: none;
  font-weight: 700;
}

.article h2 {
  margin-top: 28px;
}

@media (max-width: 900px) {
  .hero {
    padding: 44px 28px;
  }

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

@media (max-width: 640px) {
  .page-shell,
  .page-shell.narrow {
    width: min(100% - 20px, 100%);
  }

  .hero,
  .card,
  .page-header,
  .article {
    border-radius: 20px;
  }

  .page-header,
  .article {
    padding: 24px;
  }
}