:root {
  --bg: #f4f7fa;
  --paper: #ffffff;
  --ink: #071d3a;
  --muted: #526477;
  --line: #d9e1e8;
  --navy: #003767;
  --teal: #008e93;
  --shadow: 0 18px 45px rgba(0, 42, 81, 0.14);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: "Segoe UI", system-ui, sans-serif;
  line-height: 1.7;
}

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

.lp-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 76px;
  padding: 14px clamp(22px, 4vw, 64px);
  background: rgba(255, 255, 255, 0.95);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.lp-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--navy);
  font-weight: 850;
}

.lp-mark {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--navy), var(--teal));
}

nav {
  display: flex;
  gap: clamp(18px, 4vw, 56px);
  color: var(--navy);
  font-size: 14px;
  font-weight: 800;
}

.lp-header-cta,
.lp-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  border: 1px solid var(--navy);
  border-radius: 4px;
  font-weight: 800;
}

.lp-header-cta,
.lp-button.primary {
  background: var(--navy);
  color: #fff;
}

.lp-button.secondary {
  background: #fff;
  color: var(--navy);
}

.lp-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(420px, 1.1fr);
  align-items: center;
  gap: clamp(32px, 5vw, 72px);
  min-height: calc(100vh - 76px);
  padding: clamp(54px, 7vw, 96px) clamp(22px, 5vw, 72px) 48px;
  background: linear-gradient(90deg, #fff 0%, #fff 48%, #eef6f7 100%);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 14px;
  font-weight: 850;
}

h1,
h2,
h3,
p {
  letter-spacing: 0;
}

h1 {
  max-width: 760px;
  margin: 0 0 22px;
  color: var(--navy);
  font-size: clamp(38px, 5vw, 66px);
  line-height: 1.12;
}

.lp-hero-copy > p:not(.eyebrow),
.section-title p,
.quality p {
  max-width: 720px;
  color: var(--muted);
  font-size: 18px;
}

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

.lp-preview {
  overflow: hidden;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.lp-preview img {
  display: block;
  width: 100%;
  aspect-ratio: 1.3;
  object-fit: cover;
  object-position: left top;
}

.lp-section {
  padding: 72px clamp(22px, 5vw, 72px);
  background: #fff;
  border-top: 1px solid var(--line);
}

.section-title {
  max-width: 760px;
  margin: 0 auto 32px;
  text-align: center;
}

h2 {
  margin: 0 0 12px;
  color: var(--navy);
  font-size: clamp(30px, 3vw, 42px);
  line-height: 1.2;
}

.architecture-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.architecture-row article {
  min-height: 220px;
  padding: 26px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.architecture-row span {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: #fff;
  background: var(--teal);
  border-radius: 999px;
  font-weight: 850;
}

.architecture-row h3 {
  margin: 18px 0 8px;
  color: var(--navy);
}

.architecture-row p {
  margin: 0;
  color: var(--muted);
}

.quality {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 0.8fr);
  gap: 42px;
  align-items: start;
  background: var(--bg);
}

.quality ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 24px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.quality li {
  color: var(--navy);
  font-weight: 750;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 28px clamp(22px, 5vw, 72px);
  color: var(--muted);
  background: #fff;
  border-top: 1px solid var(--line);
}

footer a {
  color: var(--navy);
  font-weight: 800;
}

@media (max-width: 860px) {
  .lp-header,
  nav,
  .lp-actions,
  footer {
    align-items: flex-start;
  }

  .lp-header {
    position: static;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
  }

  .lp-header-cta {
    width: 100%;
  }

  .lp-hero,
  .architecture-row,
  .quality {
    grid-template-columns: 1fr;
  }

  .lp-hero {
    min-height: auto;
    background: #fff;
  }

  footer {
    flex-direction: column;
  }
}