:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --text: #10213d;
  --muted: #51617d;
  --primary: #1e6fff;
  --primary-700: #1556cc;
  --warning: #fff8e8;
  --warning-border: #ffd98b;
  --radius: 16px;
  --shadow: 0 10px 28px rgba(16, 33, 61, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: "Agenda", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.container {
  width: min(1100px, 92vw);
  margin: 0 auto;
}

.hero {
  background: linear-gradient(135deg, #0f2f63, #1e6fff);
  color: #fff;
  padding: 5rem 0 4rem;
}

.hero__content {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 0.6rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 700;
  font-size: 0.82rem;
  opacity: 0.85;
}

h1 {
  margin: 0;
  font-size: clamp(1.9rem, 4vw, 3rem);
  line-height: 1.1;
}

.lead {
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.92);
  line-height: 1.7;
  font-size: 1.04rem;
}

.btn {
  display: inline-block;
  margin-top: 1.4rem;
  background: #fff;
  color: #0f2f63;
  font-weight: 700;
  text-decoration: none;
  padding: 0.85rem 1.2rem;
  border-radius: 999px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(0, 0, 0, 0.16);
}

.section {
  padding: 2rem 0 3rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.35rem 1.25rem;
  margin-bottom: 1rem;
  border: 1px solid #e9eef6;
}

.card h2 {
  margin: 0;
  font-size: clamp(1.14rem, 2.3vw, 1.45rem);
}

.card p {
  margin-top: 0.6rem;
  color: var(--muted);
  line-height: 1.65;
}

ul {
  margin: 0.8rem 0 0;
  padding-left: 1.15rem;
}

li {
  margin-bottom: 0.7rem;
  line-height: 1.6;
  color: #1f2f4d;
}

.warning {
  background: var(--warning);
  border-color: var(--warning-border);
}

.tag {
  display: inline-block;
  margin-left: 0.45rem;
  font-size: 0.75rem;
  padding: 0.22rem 0.5rem;
  border-radius: 999px;
  background: #ffe2a9;
  color: #704800;
  vertical-align: middle;
}

.checklist .checks {
  margin-top: 0.9rem;
  display: grid;
  gap: 0.6rem;
}

.checklist label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.68rem 0.76rem;
  border-radius: 10px;
  background: #f7faff;
  border: 1px solid #dce7fb;
}

input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary);
}

.note {
  margin-top: 1.2rem;
  background: #eaf2ff;
  color: #1d3361;
  padding: 1rem 1.1rem;
  border-radius: 12px;
  border: 1px solid #cfe0ff;
}

.note p {
  margin: 0;
  line-height: 1.6;
}

.footer {
  padding: 1.2rem 0 2rem;
}

.footer__content {
  text-align: center;
  color: #5e6e8f;
  font-size: 0.92rem;
}

@media (min-width: 860px) {
  .section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: start;
  }

  .section .card:nth-child(1),
  .section .card:nth-child(2),
  .section .card:nth-child(3),
  .section .card:nth-child(4),
  .section .card:nth-child(5),
  .section .note {
    grid-column: span 1;
  }

  .section .card:nth-child(3) {
    grid-column: 1 / -1;
  }

  .section .card:nth-child(5) {
    grid-column: 1 / -1;
  }

  .section .note {
    grid-column: 1 / -1;
  }
}

@media (max-width: 540px) {
  .hero {
    padding-top: 4.2rem;
  }

  .card {
    padding: 1.1rem;
  }
}