* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #1f2933;
  background: #f5f7fa;
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(10px);
  background: rgba(255, 255, 255, 0.9);
  border-bottom: 1px solid rgba(15, 23, 42, 0.06);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
}

.nav a {
  margin-left: 16px;
  text-decoration: none;
  color: #4b5563;
  font-size: 0.95rem;
}

.nav a:hover {
  color: #111827;
}

.hero {
  padding: 80px 0 72px;
  background: radial-gradient(circle at top left, #e0f2fe, transparent 60%),
    radial-gradient(circle at bottom right, #e5e7eb, transparent 55%);
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 300px;
}

.hero-text {
  max-width: 640px;
  text-align: center;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin-bottom: 16px;
  color: #111827;
}

.hero p {
  font-size: 1rem;
  color: #4b5563;
  margin-bottom: 24px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.18s ease;
}

.btn.primary {
  background: #2563eb;
  color: #ffffff;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.25);
}

.btn.primary:hover {
  background: #1d4ed8;
  transform: translateY(-1px);
  box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
}

.btn.secondary {
  background: #ffffff;
  color: #111827;
  border-color: #e5e7eb;
}

.btn.secondary:hover {
  background: #f9fafb;
}

.section {
  padding: 56px 0;
}

.section-alt {
  background: #ffffff;
}

.section h2 {
  font-size: 1.6rem;
  margin-bottom: 24px;
  text-align: center;
  color: #111827;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

.card {
  background: #ffffff;
  border-radius: 16px;
  padding: 20px;
  box-shadow: 0 14px 30px rgba(15, 23, 42, 0.04);
  border: 1px solid rgba(148, 163, 184, 0.25);
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.card p {
  font-size: 0.95rem;
  color: #4b5563;
}

.steps {
  list-style: decimal;
  padding-left: 20px;
  max-width: 720px;
  margin: 0 auto;
}

.steps li {
  margin-bottom: 10px;
  color: #4b5563;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  background: #f9fafb;
  color: #6b7280;
}

.footer-inner {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
}

@media (max-width: 768px) {
  .header-inner {
    justify-content: space-between;
  }

  .nav a {
    margin-left: 8px;
    font-size: 0.85rem;
  }

  .hero {
    padding: 64px 0 56px;
  }

  .grid {
    grid-template-columns: 1fr;
  }
}