@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&display=swap');

:root {
  --primary: #1f6d5a;
  --primary-dark: #0f2b23;
  --primary-soft: #e8f5f1;
  --accent: #c4e93a;
  --text-main: #0f172a;
  --text-muted: #475569;
  --bg-page: #f8fafc;
  --surface: #ffffff;
  --border: #e2e8f0;
  --radius: 16px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

/* HEADER */
.header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand span {
  font-size: 11px;
  background: var(--primary-soft);
  color: var(--primary);
  padding: 3px 8px;
  border-radius: 99px;
  font-weight: 700;
  text-transform: uppercase;
}

.nav {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.nav a {
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 8px;
  transition: all 0.15s ease;
}

.nav a:hover, .nav a.active {
  color: var(--primary);
  background: var(--primary-soft);
}

/* HERO */
.hero {
  background: linear-gradient(135deg, #184e41 0%, #0d2821 100%);
  color: #ffffff;
  padding: 48px 20px;
  text-align: center;
}

.hero-tag {
  display: inline-block;
  background: rgba(196, 233, 58, 0.18);
  color: var(--accent);
  border: 1px solid rgba(196, 233, 58, 0.35);
  font-size: 11.5px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 14px;
}

.hero h1 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 12px;
  color: #ffffff;
  line-height: 1.25;
}

.hero p {
  max-width: 720px;
  margin: 0 auto 16px;
  font-size: 15.5px;
  color: #d1fae5;
  line-height: 1.5;
}

.meta {
  font-size: 12.5px;
  color: #94a3b8;
  font-weight: 600;
}

/* CONTAINER */
.container {
  max-width: 960px;
  margin: -24px auto 60px;
  padding: 0 16px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 36px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
}

.section {
  margin-bottom: 34px;
  padding-bottom: 28px;
  border-bottom: 1px solid #f1f5f9;
}

.section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.section h2 {
  font-size: 20px;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.section h3 {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin: 18px 0 8px;
}

.section p {
  margin-bottom: 14px;
  color: #334155;
}

.section ul, .section ol {
  margin: 10px 0 16px 24px;
  color: #334155;
}

.section li {
  margin-bottom: 8px;
}

.alert-box {
  background: #f0fdf4;
  border-left: 4px solid #16a34a;
  border-radius: 8px;
  padding: 16px;
  margin: 18px 0;
  font-size: 14px;
  color: #166534;
}

.alert-box-warning {
  background: #fffbeb;
  border-left: 4px solid #d97706;
  color: #92400e;
}

.highlight-badge {
  display: inline-block;
  background: #f1f5f9;
  border: 1px solid #cbd5e1;
  padding: 2px 8px;
  border-radius: 6px;
  font-family: monospace;
  font-size: 13px;
  font-weight: 700;
  color: #0f172a;
}

/* FOOTER */
.footer {
  text-align: center;
  padding: 30px 20px;
  font-size: 13px;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  background: var(--surface);
}

.footer strong { color: var(--primary); }

@media (max-width: 768px) {
  .card { padding: 24px 18px; }
  .hero h1 { font-size: 24px; }
  .hero { padding: 36px 16px; }
}