:root {
  --bg: #f6f8fb;
  --surface: #ffffff;
  --ink: #162033;
  --muted: #5f6c80;
  --line: #dce4ef;
  --primary: #1258dc;
  --primary-dark: #0d3d98;
  --accent: #16a3b8;
  --soft: #eaf2ff;
  --shadow: 0 18px 50px rgba(22, 32, 51, 0.11);
  --radius: 22px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(246, 248, 251, 0.9);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(220, 228, 239, 0.75);
}

.nav {
  max-width: 1180px;
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  gap: 24px;
}

.brand,
.nav-links {
  display: flex;
  align-items: center;
}

.brand {
  gap: 12px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 14px;
  font-size: 0.85rem;
  box-shadow: 0 10px 24px rgba(18, 88, 220, 0.25);
}

.nav-links {
  gap: 22px;
  color: var(--muted);
  font-size: 0.95rem;
}

.nav-links a {
  text-decoration: none;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  padding: 9px 14px;
  color: var(--ink);
}

.section {
  max-width: 1180px;
  margin: 0 auto;
  padding: 82px 24px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
  gap: 42px;
  align-items: center;
  min-height: calc(100vh - 76px);
}

.eyebrow,
.card-label,
.tag {
  color: var(--primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 790px;
  font-size: clamp(2.65rem, 7vw, 5.7rem);
  line-height: 0.95;
  letter-spacing: -0.07em;
  margin-bottom: 26px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1.05;
  letter-spacing: -0.05em;
  margin-bottom: 18px;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.lead {
  max-width: 720px;
  color: var(--muted);
  font-size: 1.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin: 34px 0 22px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  padding: 0 22px;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease, background 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-1px);
}

.button.primary {
  color: #fff;
  background: var(--primary);
  box-shadow: 0 12px 24px rgba(18, 88, 220, 0.23);
}

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

.button.secondary {
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
}

.note,
.small {
  color: var(--muted);
  font-size: 0.92rem;
}

.hero-card,
.product-card,
.why-list > div,
.rfq-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  padding: 34px;
}

.hero-card h2 {
  font-size: 2rem;
  margin-top: 12px;
}

.hero-card ul {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.hero-card li {
  padding: 14px 0 14px 30px;
  border-top: 1px solid var(--line);
  position: relative;
}

.hero-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent);
}

.intro,
.why,
.contact {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 44px;
  align-items: start;
}

.intro p:last-child,
.why-copy p,
.contact-copy p {
  color: var(--muted);
  font-size: 1.06rem;
}

.products,
.process {
  padding-top: 58px;
}

.product-grid,
.steps,
.why-list {
  display: grid;
  gap: 18px;
}

.product-grid {
  grid-template-columns: 1.15fr 0.925fr 0.925fr;
  margin-top: 28px;
}

.product-card {
  padding: 28px;
}

.product-card.featured {
  background: linear-gradient(180deg, #ffffff, var(--soft));
  border-color: #bfd3f6;
}

.tag {
  display: inline-block;
  margin-bottom: 18px;
}

.steps {
  grid-template-columns: repeat(3, 1fr);
  margin-top: 26px;
}

.steps > div {
  padding: 24px;
  background: var(--soft);
  border-radius: 18px;
}

.steps p,
.why-list p {
  color: var(--muted);
  margin-bottom: 0;
}

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

.why-list > div {
  padding: 24px;
  box-shadow: none;
}

.contact {
  align-items: start;
}

.contact-email a {
  color: var(--primary);
  font-weight: 800;
}

.rfq-form {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  padding: 28px;
}

.rfq-form label {
  display: grid;
  gap: 7px;
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 800;
}

.rfq-form input,
.rfq-form select,
.rfq-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 13px 14px;
  color: var(--ink);
  font: inherit;
  background: #fbfdff;
}

.rfq-form input:focus,
.rfq-form select:focus,
.rfq-form textarea:focus {
  outline: 3px solid rgba(18, 88, 220, 0.16);
  border-color: var(--primary);
}

.full {
  grid-column: 1 / -1;
}

.form-status {
  grid-column: 1 / -1;
  min-height: 1.4em;
  color: var(--muted);
  margin: 0;
}

.site-footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px 54px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer p {
  margin-bottom: 8px;
}

@media (max-width: 840px) {
  .nav {
    flex-wrap: wrap;
    padding-top: 16px;
    padding-bottom: 16px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    flex-basis: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    padding: 8px 0;
  }

  .nav-links.is-open {
    display: flex;
  }

  .hero,
  .intro,
  .why,
  .contact,
  .product-grid,
  .steps,
  .rfq-form {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .section {
    padding: 58px 20px;
  }
}