:root {
  --bg: #f7fafc;
  --surface: #ffffff;
  --surface-2: #eef6f8;
  --text: #13202b;
  --muted: #5f6f7a;
  --line: #dbe7ec;
  --primary: #0f3d5c;
  --primary-2: #145f7f;
  --accent: #21a6a1;
  --accent-soft: #dff5f3;
  --radius: 22px;
  --shadow: 0 18px 45px rgba(15, 61, 92, 0.08);
  --container: 1160px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

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

p {
  margin: 0 0 16px;
}

ul {
  margin: 0;
  padding-left: 20px;
}

li {
  margin-bottom: 8px;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 250, 252, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(219, 231, 236, 0.8);
}

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

.logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--primary);
  font-size: 20px;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: grid;
  place-items: center;
  color: white;
  font-size: 17px;
  letter-spacing: 0;
}

.nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}

.nav a {
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.nav a:hover,
.nav a.active {
  color: var(--primary);
  border-bottom-color: var(--accent);
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  font-weight: 650;
  font-size: 14px;
  white-space: nowrap;
}

.mobile-toggle {
  display: none;
}

.hero {
  padding: 72px 0 52px;
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  right: -120px;
  top: 40px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(33,166,161,0.18), rgba(33,166,161,0));
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-2);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: .08em;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--accent);
  border-radius: 999px;
}

h1, h2, h3 {
  color: var(--primary);
  line-height: 1.12;
  margin: 0;
}

h1 {
  font-size: clamp(38px, 5vw, 64px);
  letter-spacing: -0.045em;
  max-width: 880px;
}

h2 {
  font-size: clamp(28px, 3.5vw, 42px);
  letter-spacing: -0.035em;
  margin-bottom: 20px;
}

h3 {
  font-size: 20px;
  letter-spacing: -0.02em;
  margin-bottom: 10px;
}

.lead {
  font-size: clamp(18px, 2vw, 22px);
  color: var(--muted);
  margin: 24px 0 30px;
  max-width: 760px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 750;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 14px 30px rgba(33, 166, 161, .22);
}

.btn-primary:hover {
  background: #1b918d;
}

.btn-secondary {
  background: #fff;
  color: var(--primary);
  border-color: var(--line);
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 8px);
  padding: 30px;
  box-shadow: var(--shadow);
  position: relative;
}

.hero-card::before {
  content: "";
  position: absolute;
  inset: 14px;
  border-radius: 24px;
  border: 1px solid rgba(33,166,161,.18);
  pointer-events: none;
}

.stat-list {
  display: grid;
  gap: 18px;
  position: relative;
}

.stat {
  padding: 18px;
  border-radius: 18px;
  background: var(--surface-2);
}

.stat strong {
  display: block;
  color: var(--primary);
  font-size: 28px;
  line-height: 1;
  margin-bottom: 6px;
}

.stat span {
  color: var(--muted);
  font-size: 14px;
}

.section {
  padding: 64px 0;
}

.section.alt {
  background: var(--surface);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 30px;
}

.section-head p {
  color: var(--muted);
  max-width: 650px;
}

.text-block {
  max-width: 900px;
  color: var(--muted);
  font-size: 18px;
}

.text-block strong {
  color: var(--text);
}

.cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 8px 24px rgba(15, 61, 92, 0.04);
}

.alt .card {
  background: var(--bg);
}

.card p {
  color: var(--muted);
}

.icon {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: var(--accent-soft);
  color: var(--primary);
  display: grid;
  place-items: center;
  font-weight: 800;
  margin-bottom: 18px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.product-card {
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background:
    linear-gradient(135deg, rgba(15,61,92,.95), rgba(20,95,127,.9)),
    var(--primary);
  color: #fff;
  border-radius: calc(var(--radius) + 6px);
  padding: 32px;
  overflow: hidden;
  position: relative;
}

.product-card::after {
  content: "";
  position: absolute;
  right: -50px;
  bottom: -60px;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(33,166,161,.28);
}

.product-card h3 {
  color: #fff;
  font-size: 30px;
}

.product-card p {
  color: rgba(255,255,255,.78);
  max-width: 520px;
}

.product-card .btn {
  width: fit-content;
  background: #fff;
  color: var(--primary);
  position: relative;
  z-index: 1;
}

.feature-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.feature-item {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
}

.feature-item strong {
  display: block;
  color: var(--primary);
  margin-bottom: 4px;
}

.feature-item span {
  color: var(--muted);
  font-size: 15px;
}

.spec-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

table {
  border-collapse: collapse;
  width: 100%;
  min-width: 880px;
  font-size: 14px;
}

th, td {
  padding: 15px 16px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

th {
  background: var(--surface-2);
  color: var(--primary);
  font-weight: 750;
}

tr:last-child td {
  border-bottom: 0;
}

.cta {
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: #fff;
  border-radius: calc(var(--radius) + 8px);
  padding: 42px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 28px;
  align-items: center;
}

.cta h2 {
  color: #fff;
  margin-bottom: 12px;
}

.cta p {
  color: rgba(255,255,255,.78);
  max-width: 720px;
}

.cta .btn {
  background: var(--accent);
  color: #fff;
}

.contact-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 24px;
}

.contact-panel,
.form-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
}

.contact-row {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.contact-row:last-child {
  border-bottom: 0;
}

.contact-label {
  color: var(--muted);
  font-size: 14px;
  margin-bottom: 2px;
}

.contact-value {
  color: var(--primary);
  font-weight: 750;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.field {
  display: grid;
  gap: 8px;
}

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

label {
  font-size: 14px;
  color: var(--primary);
  font-weight: 650;
}

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  min-height: 46px;
  padding: 12px 14px;
  font: inherit;
  color: var(--text);
}

textarea {
  min-height: 130px;
  resize: vertical;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 34px 0;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.note {
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 900px) {
  .header-inner {
    align-items: flex-start;
    padding: 18px 0;
    flex-direction: column;
  }

  .nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 6px;
  }

  .header-cta {
    display: none;
  }

  .hero {
    padding-top: 46px;
  }

  .hero-grid,
  .contact-grid,
  .cta {
    grid-template-columns: 1fr;
  }

  .cards,
  .product-grid,
  .feature-list {
    grid-template-columns: 1fr;
  }

  .section-head {
    display: block;
  }

  .hero-card {
    max-width: 540px;
  }

  .cta {
    padding: 30px;
  }
}

@media (max-width: 560px) {
  .container {
    width: min(100% - 28px, var(--container));
  }

  .nav {
    gap: 16px;
    font-size: 14px;
  }

  .hero-card,
  .card,
  .contact-panel,
  .form-panel,
  .product-card {
    padding: 22px;
  }

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

  .footer-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .footer-links {
    flex-wrap: wrap;
  }
}