:root {
  --bg: #F3F2EE;
  --surface: #EAE8E3;
  --ink: #1A1A1A;
  --muted: #62615D;
  --rule: #D6D4CE;
  --blue: #2130FF;
  --navy: #070B1F;
  --gutter: clamp(16px, 4vw, 56px);
  --max: 1200px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Helvetica Neue", Helvetica, Arial, system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }

/* Header */
header { position: sticky; top: 0; z-index: 10; background: var(--bg); }
.bar {
  display: flex; align-items: center; justify-content: space-between;
  height: 76px; border-bottom: 1px solid var(--rule);
}
.logo { display: flex; align-items: center; gap: 16px; text-decoration: none; flex: none; }
.logo svg { width: 36px; height: 36px; display: block; }
.logo span { font-weight: 700; letter-spacing: .22em; font-size: 15px; }
nav { display: flex; gap: 32px; }
nav a {
  text-decoration: none; font-size: 13px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted);
}
nav a:hover { color: var(--ink); }

/* Language switch */
.lang { margin-left: 8px; padding-left: 24px; border-left: 1px solid var(--rule); color: var(--ink); }

/* Shared */
section { padding: clamp(72px, 10vw, 128px) 0; }
.eyebrow {
  display: flex; align-items: center; gap: 14px; margin: 0 0 28px;
  font-size: 13px; font-weight: 700; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted);
}
.eyebrow::before { content: ""; width: 10px; height: 10px; background: var(--blue); flex: none; }
h1, h2 { font-weight: 400; letter-spacing: -.02em; margin: 0; }
h1 { font-size: clamp(48px, 8vw, 104px); line-height: 1.02; }
h2 { font-size: clamp(36px, 5.2vw, 64px); line-height: 1.08; }
.lead { font-size: clamp(19px, 2vw, 24px); line-height: 1.45; margin: 0; }
.num { color: var(--blue); font-size: 26px; line-height: 1; }

/* Hero */
.hero { padding: 0; }
.hero-copy { padding: clamp(56px, 8vw, 96px) 0 clamp(72px, 10vw, 128px); }
.hero-grid { display: grid; grid-template-columns: 1fr 300px; gap: 64px; align-items: stretch; }
.accent-line { width: 230px; height: 12px; background: var(--blue); margin: 56px 0 36px; }
.button {
  display: inline-flex; align-items: center; gap: 14px; margin-top: 44px;
  background: var(--blue); color: #fff; text-decoration: none;
  padding: 20px 32px; font-size: 15px; font-weight: 700;
  letter-spacing: .1em; text-transform: uppercase;
  transition: background .15s;
}
.button:hover { background: #1220D8; }
.panel {
  background: var(--blue); color: #fff; display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 48px; padding: 48px 32px;
}
.panel svg { width: 60%; max-width: 150px; height: auto; display: block; }
.panel span { font-size: 38px; letter-spacing: .02em; }

/* About */
.about { border-top: 1px solid var(--rule); }
.about-grid {
  display: grid; grid-template-columns: 5fr 7fr; gap: 64px;
  margin-top: 56px; padding-top: 48px; border-top: 1px solid var(--ink);
}
.about-grid p { margin: 0; }
.about-grid .body { color: var(--muted); font-size: 19px; }
.about-grid .body p + p { margin-top: 20px; }

/* Principles */
.principles { background: var(--surface); }
.grid-3 {
  display: grid; grid-template-columns: repeat(3, 1fr);
  column-gap: 48px; row-gap: 56px; margin-top: 64px;
}
.item { border-top: 1px solid var(--ink); padding-top: 28px; display: grid; grid-template-columns: 56px 1fr; }
.item h3 { font-size: 22px; font-weight: 700; margin: 0 0 12px; letter-spacing: -.01em; }
.item p { margin: 0; color: var(--muted); font-size: 16px; }

/* Technology */
.tech .lead { color: var(--muted); max-width: 820px; margin-top: 28px; }
.rows { margin-top: 64px; border-top: 1px solid var(--rule); }
.row {
  display: grid; grid-template-columns: 96px 240px 1fr; align-items: baseline;
  padding: 30px 0; border-bottom: 1px solid var(--rule);
}
.row .num { font-size: 30px; }
.row h3 { margin: 0; font-size: 21px; font-weight: 700; letter-spacing: .04em; }
.row p { margin: 0; color: var(--muted); font-size: 18px; }
.note { margin-top: 24px; font-size: 13px; color: var(--muted); }

/* Contact */
.contact {
  background:
    radial-gradient(ellipse at 85% 30%, rgba(33, 48, 255, .45), transparent 55%),
    radial-gradient(ellipse at 10% 110%, rgba(33, 48, 255, .25), transparent 50%),
    var(--navy);
  color: #fff;
}
.contact .eyebrow { color: #fff; }
.contact .lead { margin-top: 32px; max-width: 640px; color: rgba(255,255,255,.88); }
.contact .button { padding: 26px 40px; }
.mail { display: block; margin-top: 36px; font-size: 22px; text-decoration: none; }
.mail:hover { text-decoration: underline; text-underline-offset: 4px; }

/* Footer */
footer { background: var(--navy); color: rgba(255,255,255,.55); font-size: 13px; }
footer .wrap {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 24px; padding-bottom: 24px; border-top: 1px solid rgba(255,255,255,.14);
}

/* Responsive */
@media (max-width: 880px) {
  nav a:not(.lang) { display: none; }
  .lang { border-left: 0; padding-left: 0; margin-left: 0; }
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; }
  .panel { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 28px; }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .row { grid-template-columns: 64px 1fr; row-gap: 8px; }
  .row p { grid-column: 2; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .bar { height: 64px; }
  .grid-3 { grid-template-columns: 1fr; row-gap: 36px; }
  .accent-line { width: 140px; height: 10px; margin: 40px 0 28px; }
  .button { width: 100%; justify-content: center; padding: 20px 16px; }
  .mail { font-size: 19px; }
  .lead br { display: none; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }