:root {
  --ink: #14161c;
  --soft: #5b606b;
  --line: #e3e1db;
  --paper: #f5f4f0;
  --card: #ffffff;
  --accent: #1747d6;
  --accent-soft: #e6ecfc;
  --orange: #f57319;
  --red: #cc1f29;
  --yellow: #facc29;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f1f2f4;
    --soft: #a2a7b1;
    --line: #262a33;
    --paper: #0f1218;
    --card: #171b23;
    --accent: #6f95ff;
    --accent-soft: #18233f;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 17px/1.6 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
}
.stripes { display: flex; height: 6px; }
.stripes span { flex: 1; }
.stripes span:nth-child(1) { background: var(--orange); }
.stripes span:nth-child(2) { background: #1747d6; }
.stripes span:nth-child(3) { background: var(--red); }
.stripes span:nth-child(4) { background: var(--yellow); }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 20px 72px; }
header { display: flex; align-items: center; gap: 16px; padding: 36px 0 8px; }
header a.brand { display: flex; align-items: center; gap: 16px; color: inherit; text-decoration: none; }
header img { width: 64px; height: 64px; border-radius: 15px; box-shadow: 0 6px 20px rgba(23, 71, 214, .25); }
header .name { font-weight: 700; font-size: 20px; letter-spacing: -.01em; }
header .by { color: var(--soft); font-size: 14px; }
nav.lang { margin-left: auto; font-size: 14px; white-space: nowrap; }
nav.lang a { color: var(--soft); text-decoration: none; padding: 6px 10px; border-radius: 999px; }
nav.lang a:hover, nav.lang a:focus-visible { background: var(--card); color: var(--ink); }
h1 { font-size: clamp(32px, 6vw, 46px); line-height: 1.08; letter-spacing: -.025em; margin: 40px 0 12px; }
.lead { font-size: 19px; color: var(--soft); margin: 0 0 32px; max-width: 34em; }
.meta { font-size: 14px; color: var(--soft); margin-bottom: 28px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 26px 26px 10px; margin: 18px 0; }
.card.key { border-color: transparent; background: var(--accent-soft); }
h2 { font-size: 21px; letter-spacing: -.01em; margin: 0 0 10px; }
p, li { margin: 0 0 16px; }
ul { padding-left: 1.2em; margin: 0 0 16px; }
a { color: var(--accent); }
.pill { display: inline-block; font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); margin-bottom: 8px; }
details { border-top: 1px solid var(--line); padding: 14px 0; }
details:first-of-type { border-top: 0; }
summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--accent); font-weight: 700; font-size: 20px; line-height: 1; }
details[open] summary::after { content: "–"; }
details p { margin: 10px 0 4px; color: var(--soft); }
.contact { display: flex; flex-wrap: wrap; gap: 12px; margin: 8px 0 18px; }
.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px; border-radius: 999px; font-weight: 600; text-decoration: none; background: var(--accent); color: #fff; transition: transform .15s cubic-bezier(.2,.7,.3,1); }
.btn:hover { transform: translateY(-1px); }
.btn.ghost { background: transparent; color: var(--accent); border: 1.5px solid var(--accent); }
.divider { margin: 64px 0 0; border: 0; border-top: 1px solid var(--line); }
footer { color: var(--soft); font-size: 14px; margin-top: 48px; }
footer a { color: var(--soft); }
@media (max-width: 520px) {
  header { flex-wrap: wrap; }
  nav.lang { margin-left: 0; width: 100%; }
  .card { padding: 22px 20px 6px; border-radius: 18px; }
}
@media (prefers-reduced-motion: reduce) { .btn { transition: none; } }