:root {
  --navy: #061d3b;
  --blue: #1376c8;
  --cyan: #18a4e0;
  --ink: #10213e;
  --muted: #64748b;
  --light: #f6f9fc;
  --white: #ffffff;
  --line: #dbe6f1;
  --shadow: 0 18px 60px rgba(6, 29, 59, 0.14);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px 5vw;
  background: rgba(255,255,255,0.93);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 800;
  color: var(--navy);
  letter-spacing: .02em;
}
.brand img { height: 48px; width: auto; object-fit: contain; }
nav { display: flex; gap: 18px; align-items: center; font-size: 14px; }
nav a { text-decoration: none; color: var(--ink); font-weight: 700; }
.nav-cta { color: var(--blue); }
.hero {
  min-height: 78vh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(300px, .95fr);
  gap: 48px;
  align-items: center;
  padding: 80px 5vw 56px;
  background:
    radial-gradient(circle at 80% 10%, rgba(19,118,200,.17), transparent 32%),
    linear-gradient(135deg, #ffffff 0%, #f3f8fd 100%);
}
.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: .12em;
  font-size: 13px;
  font-weight: 900;
  color: var(--blue);
}
h1, h2, h3 { color: var(--navy); line-height: 1.12; }
h1 { font-size: clamp(40px, 6vw, 72px); margin: 0 0 22px; letter-spacing: -.04em; }
h2 { font-size: clamp(30px, 4vw, 48px); margin: 0 0 22px; letter-spacing: -.03em; }
h3 { font-size: 20px; margin: 0 0 12px; }
.lead { font-size: 20px; color: #2e405e; max-width: 740px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 30px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  font-weight: 800;
  text-decoration: none;
  border: 1px solid var(--blue);
}
.button.primary { background: var(--blue); color: white; }
.button.secondary { color: var(--blue); background: white; }
.hero-card {
  background: rgba(255,255,255,.88);
  border: 1px solid var(--line);
  border-radius: 28px;
  padding: 34px;
  box-shadow: var(--shadow);
  text-align: center;
}
.hero-card img { width: min(100%, 440px); border-radius: 18px; }
.hero-card .url { color: var(--blue); font-weight: 800; }
.visual-section { padding: 42px 5vw; background: white; }
.visual-section img {
  display: block;
  width: 100%;
  max-width: 1420px;
  margin: 0 auto;
  border-radius: 26px;
  box-shadow: var(--shadow);
}
.section { padding: 86px 5vw; }
.split {
  display: grid;
  grid-template-columns: .8fr 1.2fr;
  gap: 60px;
  align-items: start;
}
.split p, .section-intro { font-size: 18px; color: #31445f; }
.muted { background: var(--light); }
.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}
.cards article {
  background: white;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 26px;
  box-shadow: 0 12px 36px rgba(6, 29, 59, .08);
}
.dark {
  background: linear-gradient(135deg, #03152f 0%, #062a53 100%);
  color: white;
}
.dark h2, .dark .eyebrow { color: white; }
.dark .section-intro { color: #d9e8f8; max-width: 980px; }
.stack-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 14px;
  margin-top: 36px;
}
.stack-grid div {
  padding: 22px;
  border-radius: 18px;
  background: rgba(255,255,255,.08);
  border: 1px solid rgba(255,255,255,.16);
}
.stack-grid span { color: var(--cyan); font-weight: 900; }
.stack-grid strong { display: block; margin: 8px 0; font-size: 17px; }
.stack-grid p { margin: 0; color: #d9e8f8; font-size: 14px; }
.pill-list { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.pill-list span {
  display: inline-flex;
  padding: 12px 18px;
  border-radius: 999px;
  background: #edf6ff;
  color: var(--navy);
  font-weight: 800;
}
.contact {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 36px;
  align-items: center;
  background: linear-gradient(135deg, #f8fbff 0%, #eef6ff 100%);
}
.contact-card {
  background: white;
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 28px;
  box-shadow: var(--shadow);
}
.contact-card a { color: var(--blue); font-weight: 800; }
footer {
  padding: 26px 5vw;
  background: var(--navy);
  color: white;
  text-align: center;
}
@media (max-width: 980px) {
  .hero, .split, .contact { grid-template-columns: 1fr; }
  .cards { grid-template-columns: repeat(2, 1fr); }
  .stack-grid { grid-template-columns: repeat(2, 1fr); }
  nav { display: none; }
}
@media (max-width: 640px) {
  .cards, .stack-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 54px; }
  .brand span { display: none; }
}