:root {
  --bg: #ffffff;
  --bg-alt: #f5f7fb;
  --text: #141a26;
  --muted: #5a6475;
  --line: #e3e7ef;
  --accent: #1f4fd1;
  --accent-soft: #e8eefc;
  --card: #ffffff;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e121a;
    --bg-alt: #141a25;
    --text: #e8ecf3;
    --muted: #9aa4b5;
    --line: #252d3b;
    --accent: #7d9bff;
    --accent-soft: #1b2440;
    --card: #171e2b;
  }
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

header {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 20px; color: var(--text); letter-spacing: -0.01em; }
.brand:hover { text-decoration: none; }
.mark { width: 30px; height: 30px; border-radius: 8px; background: var(--accent); display: grid; place-items: center; }
.mark svg { width: 18px; height: 18px; }
nav a { color: var(--muted); margin-left: 24px; font-size: 15px; }
nav a:hover { color: var(--text); text-decoration: none; }

.hero { padding-top: 104px; padding-bottom: 88px; }
.eyebrow { display: inline-block; font-size: 13px; font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--accent); background: var(--accent-soft); padding: 6px 12px; border-radius: 999px; }
h1 { font-size: clamp(36px, 6vw, 56px); line-height: 1.1; letter-spacing: -0.025em; margin: 20px 0 20px; max-width: 760px; }
.lead { font-size: 20px; color: var(--muted); max-width: 640px; margin: 0 0 36px; }
.btn { display: inline-block; background: var(--accent); color: #fff; font-weight: 600; padding: 13px 24px; border-radius: 10px; }
.btn:hover { text-decoration: none; filter: brightness(1.08); }
@media (prefers-color-scheme: dark) { .btn { color: #0e121a; } }

section { padding: 80px 0; }
.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: 32px; letter-spacing: -0.02em; margin: 0 0 12px; }
.section-lead { color: var(--muted); margin: 0 0 40px; max-width: 620px; }

.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
@media (max-width: 960px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 26px; }
.card h3 { margin: 14px 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); font-size: 16px; }
.icon { width: 42px; height: 42px; border-radius: 10px; background: var(--accent-soft); display: grid; place-items: center; color: var(--accent); }
.icon svg { width: 22px; height: 22px; }

.about { display: grid; grid-template-columns: 1.2fr 1fr; gap: 56px; align-items: start; }
.about p { color: var(--muted); margin: 0 0 16px; }
.founders { display: grid; gap: 16px; }
.person { display: flex; align-items: center; gap: 16px; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; }
.avatar { width: 52px; height: 52px; border-radius: 50%; background: var(--accent-soft); color: var(--accent); display: grid; place-items: center; font-weight: 700; font-size: 18px; flex-shrink: 0; }
.person strong { display: block; font-size: 17px; }
.person span { color: var(--muted); font-size: 15px; }

.contact { text-align: center; }
.contact .section-lead { margin-left: auto; margin-right: auto; }

footer { border-top: 1px solid var(--line); padding: 28px 0; color: var(--muted); font-size: 14px; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px; }

@media (max-width: 760px) {
  .hero { padding-top: 64px; padding-bottom: 56px; }
  section { padding: 56px 0; }
  .about { grid-template-columns: 1fr; gap: 32px; }
  nav a:not(:last-child) { display: none; }
}

footer nav a { margin-left: 0; color: var(--muted); }
footer nav a:hover { color: var(--text); }

.policy { padding-top: 72px; padding-bottom: 88px; max-width: 760px; }
.policy h1 { font-size: clamp(32px, 5vw, 44px); margin: 0 0 8px; }
.policy .updated { color: var(--muted); margin: 0 0 40px; }
.policy h2 { font-size: 22px; margin: 40px 0 10px; }
.policy p, .policy li { color: var(--muted); }
.policy strong { color: var(--text); }
.policy ul { padding-left: 22px; }
.policy li { margin-bottom: 6px; }