:root {
  color-scheme: light;
  --color-bg: #f5f7fb;
  --color-surface: #ffffff;
  --color-ink: #0e1b2b;
  --color-ink-soft: #415466;
  --color-primary: #1c4f86;
  --color-primary-dark: #12365e;
  --color-accent: #2e7db6;
  --color-border: rgba(14, 27, 43, 0.12);
  --color-muted: #e9eef5;
  --color-success: #2f8f5b;
  --color-warning: #c58b1f;
  --color-info: #2a6fb3;

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 22px;

  --shadow-sm: 0 10px 24px rgba(14, 27, 43, 0.08);
  --shadow-lg: 0 22px 48px rgba(14, 27, 43, 0.12);

  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4rem;

  --container: 1120px;
  --font-base: clamp(0.95rem, 0.9rem + 0.35vw, 1.1rem);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "IBM Plex Sans", "Segoe UI", sans-serif;
  font-size: var(--font-base);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
}

body.nav-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid rgba(46, 125, 182, 0.6);
  outline-offset: 2px;
}

.container {
  width: min(100% - 2rem, var(--container));
  margin: 0 auto;
}

.section {
  padding: var(--space-6) 0;
}

.section.alt {
  background: var(--color-muted);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

.stack {
  display: grid;
  gap: var(--space-3);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.7rem 1.7rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  min-height: 44px;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn--primary,
.btn-primary,
a.btn.btn-primary {
  background: var(--color-primary);
  color: var(--color-surface);
  box-shadow: 0 12px 24px rgba(28, 79, 134, 0.25);
}

.btn--outline,
.btn-ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-ink-soft);
}

.btn:hover {
  transform: translateY(-1px);
}

.badge,
.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: rgba(28, 79, 134, 0.12);
  color: var(--color-primary-dark);
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(14, 27, 43, 0.06);
}

.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 247, 251, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(14, 27, 43, 0.08);
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
}

.logo {
  font-family: "Source Serif 4", serif;
  font-size: 1.35rem;
  color: var(--color-primary-dark);
  font-weight: 600;
  letter-spacing: 0.4px;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.6rem;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.9rem;
}

.nav-links {
  display: none;
  flex-direction: column;
  gap: var(--space-3);
  position: fixed;
  top: 72px;
  left: 1rem;
  right: 1rem;
  background: var(--color-surface);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transform: translateY(-16px);
  opacity: 0;
  pointer-events: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-links a {
  padding: 0.5rem 0.2rem;
  font-weight: 500;
  color: var(--color-ink-soft);
}

.nav-links a:hover,
.nav-links a:focus {
  color: var(--color-ink);
}

.nav-actions,
.nav-cta {
  display: grid;
  gap: var(--space-2);
  align-items: center;
}

.lang-switch {
  font-size: 0.85rem;
  color: var(--color-ink-soft);
}

.lang-switch a {
  font-weight: 600;
  color: var(--color-primary-dark);
}

.nav-backdrop {
  display: none;
}

body.nav-open .nav-links {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  display: flex;
}

body.nav-open .nav-backdrop {
  display: block;
  position: fixed;
  inset: 0;
  background: rgba(14, 27, 43, 0.35);
  z-index: 90;
}

.hero {
  padding: var(--space-7) 0 var(--space-6);
  background: radial-gradient(circle at top left, #ffffff 0%, #eef3f9 45%, #e6edf7 100%);
}

.hero-grid {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.hero h1 {
  font-family: "Source Serif 4", serif;
  font-size: clamp(2.1rem, 1.6rem + 2.6vw, 3.4rem);
  margin-bottom: var(--space-3);
  color: var(--color-primary-dark);
}

.hero p {
  color: var(--color-ink-soft);
}

.hero-card {
  background: var(--color-surface);
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.section h2 {
  font-family: "Source Serif 4", serif;
  font-size: clamp(1.6rem, 1.2rem + 1.4vw, 2.3rem);
  margin-bottom: var(--space-3);
  color: var(--color-primary-dark);
}

.lead {
  color: var(--color-ink-soft);
  max-width: 720px;
}

.grid-3 {
  display: grid;
  gap: var(--space-4);
}

.card.badge-basic {
  border-top: 3px solid var(--color-success);
}

.card.badge-mid {
  border-top: 3px solid var(--color-warning);
}

.card.badge-pro {
  border-top: 3px solid var(--color-info);
}

.list {
  padding-left: 1.1rem;
  color: var(--color-ink-soft);
}

.split {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

.highlight {
  background: var(--color-surface);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
}

.reviews {
  display: grid;
  gap: var(--space-4);
}

.review {
  background: var(--color-surface);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-style: italic;
  color: var(--color-ink-soft);
}

.notice {
  border-left: 3px solid #d9a441;
  padding-left: var(--space-3);
  color: var(--color-ink-soft);
  background: rgba(217, 164, 65, 0.08);
  border-radius: var(--radius-sm);
}

.form {
  display: grid;
  gap: var(--space-3);
}

.form input,
.form select,
.form textarea {
  width: 100%;
  padding: 0.85rem 0.9rem;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  font-family: inherit;
  font-size: 1rem;
  background: var(--color-surface);
  min-height: 44px;
}

.form textarea {
  min-height: 140px;
  resize: vertical;
}

.form input:invalid,
.form textarea:invalid,
.form select:invalid {
  border-color: rgba(197, 139, 31, 0.5);
}

.form button {
  justify-self: start;
}

.map-placeholder {
  background: linear-gradient(135deg, rgba(28, 79, 134, 0.14), rgba(28, 79, 134, 0.02));
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
  color: var(--color-ink-soft);
  border: 1px dashed rgba(14, 27, 43, 0.18);
}

.footer {
  background: #0f2438;
  color: #dbe5f0;
  padding: var(--space-6) 0;
}

.footer-grid {
  display: grid;
  gap: var(--space-4);
}

.footer a {
  color: #dbe5f0;
}

.footer h4 {
  margin-top: 0;
  font-family: "Source Serif 4", serif;
  color: #ffffff;
}

details {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  background: var(--color-surface);
  box-shadow: var(--shadow-sm);
}

details summary {
  cursor: pointer;
  font-weight: 600;
}

@media (min-width: 640px) {
  .hero-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .nav-toggle {
    display: none;
  }

  .nav-links {
    position: static;
    transform: none;
    opacity: 1;
    pointer-events: auto;
    display: flex;
    flex-direction: row;
    gap: var(--space-3);
    background: transparent;
    padding: 0;
    box-shadow: none;
    align-items: center;
  }

  .nav-actions,
  .nav-cta {
    display: inline-flex;
    margin-left: var(--space-3);
  }

  .grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .reviews {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
    animation: none !important;
  }
}