:root {
  --bg: #eaf4ff;
  --surface: #ffffff;
  --text: #111827;
  --muted: #4b5563;
  --primary: #1d4ed8;
  --primary-dark: #1e40af;
  --border: #d7e4f7;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "Hiragino Kaku Gothic ProN", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
}

.container {
  width: min(1080px, 92%);
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  background: rgba(234, 244, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

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

.brand {
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
  font-size: 1.2rem;
}

.site-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
}

.site-nav a:hover {
  color: var(--text);
}

.menu-toggle {
  display: none;
  border: 0;
  background: transparent;
  font-size: 1.4rem;
}

.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 2rem;
  align-items: center;
}

.badge {
  display: inline-block;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  background: #dbeafe;
  color: var(--primary-dark);
  font-size: 0.85rem;
}

h1 {
  font-size: clamp(2rem, 6vw, 3.5rem);
  line-height: 1.15;
  margin: 0.8rem 0;
}

.lead {
  color: var(--muted);
  max-width: 40ch;
}

.cta-row {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.button {
  display: inline-block;
  border: 1px solid var(--primary);
  background: var(--primary);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  cursor: pointer;
}

.button:hover {
  background: var(--primary-dark);
}

.button.ghost {
  background: transparent;
  color: var(--primary);
  border-color: #93c5fd;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.2rem;
  box-shadow: 0 8px 30px rgba(15, 25, 45, 0.06);
}

.hero-card h2 {
  margin-top: 0;
}

.hero-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-card li {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border);
  padding: 0.6rem 0;
}

.streak {
  margin: 0.8rem 0 0;
}

.section {
  padding: 3.4rem 0;
}

.section.alt {
  background: #dbeafe;
}

h2 {
  font-size: clamp(1.6rem, 4.5vw, 2.2rem);
  margin-top: 0;
}

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

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.1rem;
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.8rem;
}

.steps li {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

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

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.price-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
}

.price-card.featured {
  border: 2px solid var(--primary);
}

.tag {
  margin: 0;
  color: var(--primary-dark);
  font-size: 0.85rem;
}

.price {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0.3rem 0 1rem;
}

.price span {
  font-size: 1rem;
  color: var(--muted);
}

details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.8rem 1rem;
  margin-bottom: 0.8rem;
}

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

.contact-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.5rem;
}

.contact-form {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.contact-form input {
  flex: 1;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem;
  font-size: 1rem;
}

#form-message {
  margin: 0.75rem 0 0;
  color: var(--primary-dark);
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1rem 0;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-wrap a {
  margin-left: 1rem;
  color: var(--muted);
  text-decoration: none;
}

@media (max-width: 900px) {
  .hero-grid,
  .cards,
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 72px;
    right: 4%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.8rem;
    flex-direction: column;
    align-items: flex-start;
  }

  .site-nav.open {
    display: flex;
  }

  .menu-toggle {
    display: block;
  }

  .contact-form {
    flex-direction: column;
  }

  .footer-wrap {
    flex-direction: column;
    gap: 0.6rem;
  }
}