* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, sans-serif;
  color: #111827;
  background: #f8fafc;
  line-height: 1.65;
}

.container {
  width: min(1200px, calc(100% - 48px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #e5e7eb;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
  gap: 24px;
}

.brand {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  display: inline-block;
  background: linear-gradient(90deg, #0f3f97 0%, #174aa4 42%, #20b8cf 76%, #49d7de 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  flex-wrap: wrap;
}

.site-nav a {
  color: #374151;
  text-decoration: none;
  font-size: 1rem;
}

.site-nav a:hover {
  text-decoration: underline;
}

.hero {
  background: #ffffff;
  padding: 72px 0 72px;
}

.eyebrow {
  margin: 0 0 14px;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2563eb;
}

h1 {
  margin: 0 0 24px;
  max-width: 900px;
  font-size: clamp(2.2rem, 5vw, 4rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  color: #111827;
}

.hero-text {
  margin: 0 0 18px;
  max-width: 860px;
  font-size: 1.12rem;
  color: #4b5563;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.button {
  display: inline-block;
  padding: 13px 20px;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
}

.button.primary {
  background: #111827;
  color: #ffffff;
}

.button.secondary {
  background: #ffffff;
  color: #111827;
  border: 1px solid #d1d5db;
}

.section {
  padding: 84px 0;
  border-top: 1px solid #e5e7eb;
}

h2 {
  margin: 0 0 16px;
  font-size: 2.2rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: #111827;
}

.section p {
  margin: 0;
  max-width: 900px;
  font-size: 1.08rem;
  color: #4b5563;
}

@media (max-width: 900px) {
  .site-header .container {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 16px 0;
  }

  .site-nav {
    gap: 18px;
  }

  .hero {
    padding: 80px 0 64px;
  }

  .section {
    padding: 64px 0;
  }

  h2 {
    font-size: 1.9rem;
  }
}

@media (max-width: 640px) {
  .container {
    width: min(100% - 32px, 1200px);
  }

  .brand {
    font-size: 1.5rem;
  }

  .site-nav {
    gap: 14px;
  }

  .site-nav a {
    font-size: 0.95rem;
  }

  .hero-text,
  .section p {
    font-size: 1rem;
  }

  .button {
    width: 100%;
    text-align: center;
  }
}