* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #1f2937;
  background: #ffffff;
  line-height: 1.7;
}

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

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  border-bottom: 1px solid #e5e7eb;
  backdrop-filter: blur(8px);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
  gap: 20px;
}

.logo-top {
  font-size: 12px;
  letter-spacing: 0.22em;
  color: #6b7280;
}

.logo-main {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.08em;
  margin-top: 4px;
}

nav {
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
}

nav a {
  font-size: 14px;
  color: #4b5563;
}

nav a:hover {
  color: #111827;
}

.hero {
  padding: 72px 0 56px;
  background: linear-gradient(to bottom, #ffffff, #f8fafc);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 36px;
  align-items: center;
}

.eyebrow,
.section-label {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-size: 12px;
  font-weight: 700;
  color: #6b7280;
}

.section-label.light {
  color: #cbd5e1;
}

h1 {
  font-size: 46px;
  line-height: 1.15;
  margin: 16px 0 18px;
  color: #111827;
}

h2 {
  font-size: 36px;
  line-height: 1.2;
  margin: 12px 0 18px;
  color: #111827;
}

h3 {
  margin-top: 0;
  margin-bottom: 12px;
  color: #111827;
}

.lead,
.wide-text,
.contact-intro {
  font-size: 18px;
  color: #4b5563;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.btn {
  display: inline-block;
  padding: 13px 22px;
  border-radius: 14px;
  font-weight: 700;
  font-size: 14px;
}

.btn-dark {
  background: #111827;
  color: #ffffff;
}

.btn-light {
  border: 1px solid #d1d5db;
  background: #ffffff;
  color: #111827;
}

.hero-card,
.card,
.feature,
.step,
.contact-box,
.note-box {
  border-radius: 24px;
}

.hero-card {
  background: #f3f4f6;
  padding: 18px;
  border: 1px solid #e5e7eb;
}

.image-placeholder,
.card-image {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: #6b7280;
  border: 1px dashed #cbd5e1;
  background: #ffffff;
  border-radius: 20px;
  min-height: 320px;
  padding: 20px;
}

.section {
  padding: 78px 0;
}

.section.alt {
  background: #f8fafc;
}

.section.dark {
  background: #111827;
  color: #f9fafb;
}

.section.dark h2,
.section.dark h3,
.section.dark p {
  color: #f9fafb;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 34px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 28px;
}

.card {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 22px;
}

.card-image {
  min-height: 220px;
  background: #f3f4f6;
  margin-bottom: 18px;
}

.product-list {
  margin-top: 34px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  border-radius: 24px;
  padding: 24px;
}

.product-list ul {
  margin: 0;
  padding-left: 18px;
  columns: 2;
}

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

.feature {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 24px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.step {
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 22px;
}

.step span {
  display: inline-block;
  font-weight: 700;
  color: #6b7280;
  margin-bottom: 10px;
}

.contact-box {
  margin-top: 28px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 20px;
  background: #ffffff;
  border: 1px solid #e5e7eb;
  padding: 24px;
}

.note-box {
  background: #f8fafc;
  border: 1px solid #e5e7eb;
  padding: 20px;
}

.site-footer {
  border-top: 1px solid #e5e7eb;
  padding: 26px 0;
  background: #ffffff;
}

.footer-wrap {
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  color: #6b7280;
  font-size: 14px;
}

@media (max-width: 960px) {
  .hero-grid,
  .two-col,
  .cards,
  .feature-grid,
  .steps,
  .contact-box {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 30px;
  }

  .product-list ul {
    columns: 1;
  }
}

@media (max-width: 720px) {
  .nav {
    flex-direction: column;
    align-items: flex-start;
  }

  nav {
    gap: 14px;
  }

  .hero {
    padding-top: 46px;
  }

  .section {
    padding: 58px 0;
  }

  .lead,
  .wide-text,
  .contact-intro {
    font-size: 16px;
  }

  .image-placeholder,
  .card-image {
    min-height: 220px;
  }
}