:root {
  --bg: #f6f8fb;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --accent: #0f766e;
  --accent-dark: #115e59;
  --border: #e5e7eb;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

header {
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  color: white;
  padding: 56px 20px;
  text-align: center;
}

header h1 {
  margin: 0 0 12px;
  font-size: 2.3rem;
}

header p {
  margin: 0 auto;
  max-width: 760px;
  font-size: 1.05rem;
  opacity: 0.95;
}

nav {
  background: white;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

nav .wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 14px 20px;
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}

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

nav a:hover {
  color: var(--accent);
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 28px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.04);
}

.card h3 {
  margin-top: 0;
  margin-bottom: 10px;
}

section {
  margin-top: 28px;
}

section h2 {
  margin-bottom: 12px;
  font-size: 1.6rem;
}

.notice {
  background: #ecfeff;
  border: 1px solid #bae6fd;
  border-radius: 12px;
  padding: 18px;
  color: #164e63;
}

.steps {
  padding-left: 20px;
}

.steps li {
  margin-bottom: 10px;
}

.cta {
  margin-top: 30px;
  text-align: center;
  background: white;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 28px;
}

.cta a {
  display: inline-block;
  margin-top: 12px;
  background: var(--accent);
  color: white;
  text-decoration: none;
  padding: 12px 20px;
  border-radius: 10px;
  font-weight: bold;
}

.cta a:hover {
  background: var(--accent-dark);
}

footer {
  background: #111827;
  color: #d1d5db;
  text-align: center;
  padding: 24px 20px;
  font-size: 0.95rem;
}

.muted {
  color: var(--muted);
}