:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #172033;
  --muted: #5b6475;
  --primary: #0d3b66;
  --primary-dark: #082b49;
  --border: #dde3ee;
  --danger: #b00020;
  --success: #0a6b3f;
  --shadow: 0 18px 44px rgba(23, 32, 51, 0.12);
}

* { box-sizing: border-box; }

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

a { color: inherit; text-decoration: none; }

.container {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  background: rgba(255,255,255,0.94);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  min-height: 72px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--primary);
  letter-spacing: -0.04em;
}

nav {
  display: flex;
  gap: 18px;
  color: var(--muted);
  font-weight: 700;
}

.hero {
  padding: 80px 0;
  background: radial-gradient(circle at top right, rgba(13,59,102,0.15), transparent 34%),
              linear-gradient(180deg, #ffffff, var(--bg));
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 38px;
  align-items: center;
}

.eyebrow {
  color: var(--primary);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: .78rem;
  margin: 0 0 12px;
}

h1, h2 {
  line-height: 1.1;
  margin: 0 0 16px;
  letter-spacing: -0.05em;
}

h1 { font-size: clamp(2.3rem, 6vw, 4.4rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); }

.lead, .section-intro {
  color: var(--muted);
  font-size: 1.1rem;
  max-width: 700px;
}

.card, .form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 24px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.flow-list {
  padding-left: 22px;
  margin-bottom: 0;
}

.flow-list li { margin: 10px 0; }

.section { padding: 72px 0; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 13px;
  padding: 14px 20px;
  font-weight: 800;
  cursor: pointer;
  font-size: 1rem;
}

.button.primary { background: var(--primary); color: #ffffff; }
.button.primary:hover { background: var(--primary-dark); }
.button.secondary { background: #ffffff; border: 1px solid var(--border); }
.button.full { width: 100%; }
.button:disabled { opacity: 0.7; cursor: not-allowed; }

.form-card { margin-top: 26px; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

label {
  display: block;
  font-weight: 800;
  margin-bottom: 18px;
}

input, select {
  width: 100%;
  display: block;
  margin-top: 8px;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 13px 14px;
  font: inherit;
  background: #ffffff;
}

.plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 10px 0 18px;
}

.plan-card {
  margin: 0;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  display: flex;
  gap: 12px;
  cursor: pointer;
  background: #f9fbff;
}

.plan-card input {
  width: auto;
  margin-top: 4px;
}

.plan-card strong, .plan-card em, .plan-card b { display: block; }

.plan-card em {
  color: var(--muted);
  font-style: normal;
  font-weight: 400;
  margin: 6px 0;
}

.plan-card b {
  color: var(--primary);
  font-size: 1.3rem;
}

.price-preview {
  background: #eef4fb;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  margin: 18px 0;
  color: var(--text);
  font-weight: 700;
}

.checkbox-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.checkbox-row input {
  width: auto;
  margin-top: 6px;
}

.form-message {
  min-height: 24px;
  color: var(--muted);
  font-weight: 700;
}

.form-message.error { color: var(--danger); }
.form-message.success { color: var(--success); }

.site-footer {
  border-top: 1px solid var(--border);
  background: #ffffff;
  padding: 24px 0;
}

.footer-grid {
  display: flex;
  justify-content: space-between;
  gap: 18px;
}

.center-page {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.center-card, .text-card {
  width: min(720px, 100%);
}

.wide-card {
  width: min(1000px, 100%);
}

.summary-box {
  text-align: left;
  background: #f9fbff;
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 18px;
  margin: 24px 0;
}

.itinerary-output {
  white-space: pre-wrap;
  font-family: Arial, Helvetica, sans-serif;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 18px;
  overflow-x: auto;
}

.small {
  color: var(--muted);
  font-size: .94rem;
}

@media (max-width: 820px) {
  .hero-grid, .two-col, .plans {
    grid-template-columns: 1fr;
  }

  .nav {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px 0;
  }
}