:root {
  color-scheme: dark;
  --bg: #0b1020;
  --panel: #111a2d;
  --panel-strong: #151f35;
  --text: #edf3ff;
  --muted: #aab8d2;
  --line: rgba(177, 199, 239, .16);
  --blue: #71d6ff;
  --violet: #b7a2ff;
  --green: #9ce8cb;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(ellipse at 15% 0%, rgba(83, 104, 230, .20), transparent 37rem),
    radial-gradient(ellipse at 100% 32%, rgba(40, 178, 203, .10), transparent 34rem),
    var(--bg);
  color: var(--text);
  font: 16px/1.7 Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", "Noto Sans", sans-serif;
}
a { color: var(--blue); text-decoration: none; }
a:hover { color: #c0f1ff; text-decoration: underline; text-underline-offset: .22em; }
a:focus-visible, summary:focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; border-radius: 4px; }
.shell { width: min(var(--max), calc(100% - 40px)); margin-inline: auto; }
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  min-height: 76px; border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 11px; color: var(--text); font-weight: 720; letter-spacing: .015em; }
.brand:hover { text-decoration: none; color: white; }
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 11px;
  color: #0a1322; font-size: 17px; font-weight: 900;
  background: linear-gradient(135deg, var(--blue), var(--violet));
  box-shadow: 0 0 28px rgba(113, 214, 255, .28);
}
.nav { display: flex; align-items: center; flex-wrap: wrap; gap: 22px; font-size: 14px; }
.nav a { color: var(--muted); }
.nav a:hover { color: var(--text); }
.language { border: 1px solid var(--line); padding: 5px 10px; border-radius: 999px; }
main { padding-bottom: 72px; }
.hero { padding: clamp(58px, 9vw, 112px) 0 52px; max-width: 850px; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px;
  color: var(--green); font-size: 12px; font-weight: 760; letter-spacing: .15em; text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 21px; height: 1px; background: currentColor; }
h1, h2, h3 { line-height: 1.18; letter-spacing: -.035em; }
h1 { margin: 0; max-width: 900px; font-size: clamp(38px, 6.7vw, 72px); font-weight: 760; }
.gradient-text {
  color: transparent;
  background: linear-gradient(100deg, #a8ebff 4%, #b9a7ff 59%, #f4c9ff 100%);
  background-clip: text; -webkit-background-clip: text;
}
.lead { max-width: 740px; margin: 24px 0 0; color: var(--muted); font-size: clamp(17px, 2vw, 20px); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button {
  display: inline-flex; justify-content: center; align-items: center; gap: 9px;
  min-height: 46px; padding: 0 18px; border: 1px solid transparent; border-radius: 12px;
  background: linear-gradient(110deg, #8fe3ff, #b5a7ff); color: #111729; font-weight: 750;
}
.button:hover { color: #08101b; text-decoration: none; filter: brightness(1.08); }
.button.secondary { border-color: var(--line); background: rgba(255,255,255,.035); color: var(--text); }
.button.secondary:hover { border-color: rgba(177,199,239,.38); }
.section { margin-top: 58px; }
.section-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 20px; }
.section-head h2 { margin: 0; font-size: clamp(25px, 4vw, 38px); }
.section-head p { max-width: 570px; margin: 0; color: var(--muted); }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.card {
  min-width: 0; padding: 25px; border: 1px solid var(--line); border-radius: 18px;
  background: linear-gradient(145deg, rgba(21,31,53,.92), rgba(13,20,36,.88));
  box-shadow: 0 18px 60px rgba(0,0,0,.16);
}
.card .tag {
  display: inline-block; margin-bottom: 13px; color: var(--green);
  font-size: 11px; font-weight: 760; letter-spacing: .12em; text-transform: uppercase;
}
.card h2, .card h3 { margin: 0 0 11px; font-size: 23px; }
.card p { margin: 0; color: var(--muted); }
.card .more { display: inline-flex; margin-top: 20px; font-weight: 690; }
.wide { grid-column: 1 / -1; }
.notice {
  padding: 22px 24px; border: 1px solid rgba(156,232,203,.28); border-radius: 16px;
  background: linear-gradient(110deg, rgba(156,232,203,.08), rgba(113,214,255,.04));
}
.notice strong { color: #d3ffec; }
.notice p { margin: 6px 0 0; color: var(--muted); }
.prose { max-width: 800px; }
.prose h2 { margin: 52px 0 14px; font-size: clamp(25px, 3.6vw, 34px); }
.prose h3 { margin: 30px 0 9px; font-size: 20px; }
.prose p, .prose li { color: var(--muted); }
.prose ul, .prose ol { padding-left: 1.25rem; }
.prose li + li { margin-top: 7px; }
.step {
  display: grid; grid-template-columns: 42px minmax(0, 1fr); gap: 15px;
  margin: 13px 0; padding: 18px; border: 1px solid var(--line); border-radius: 14px;
  background: rgba(255,255,255,.025);
}
.step-no { display: grid; place-items: center; width: 36px; height: 36px; border-radius: 12px; color: #08101b; font-weight: 800; background: linear-gradient(135deg,var(--blue),var(--violet)); }
.step h3 { margin: 2px 0 6px; }
.step p { margin: 0; }
.code-label { margin: 20px 0 8px; color: var(--muted); font-size: 13px; font-weight: 660; }
pre {
  overflow-x: auto; margin: 0; padding: 20px; border: 1px solid rgba(177,199,239,.18);
  border-radius: 14px; background: #070b14; color: #dce9ff;
  font: 13px/1.75 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  tab-size: 2;
}
code { font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; }
:not(pre) > code { padding: .12em .38em; border: 1px solid var(--line); border-radius: 5px; color: #d8caff; background: rgba(183,162,255,.07); font-size: .91em; }
.crumbs { margin: 25px 0 0; color: var(--muted); font-size: 13px; }
.crumbs a { color: var(--muted); }
.faq details { padding: 16px 0; border-bottom: 1px solid var(--line); }
.faq summary { color: var(--text); cursor: pointer; font-weight: 680; }
.faq p { margin: 9px 0 0; color: var(--muted); }
.footer { padding: 27px 0 40px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.footer-inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px; }
.footer-links { display: flex; flex-wrap: wrap; gap: 18px; }
.small { color: var(--muted); font-size: 13px; }
@media (max-width: 720px) {
  .shell { width: min(var(--max), calc(100% - 28px)); }
  .topbar { align-items: flex-start; padding: 17px 0; }
  .nav { justify-content: flex-end; gap: 12px; }
  .grid { grid-template-columns: 1fr; }
  .wide { grid-column: auto; }
  .section-head { display: block; }
  .section-head p { margin-top: 9px; }
  .card { padding: 21px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}