:root {
  --bg: #0b0d1d;
  --surface: #15182d;
  --surface-2: #1d2240;
  --text: #f7f7ff;
  --muted: #c3c6df;
  --blue: #73a7ff;
  --violet: #a98bff;
  --mint: #71e4c5;
  --line: rgba(169, 139, 255, .22);
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 90% 0%, rgba(115,167,255,.16), transparent 30rem),
    radial-gradient(circle at 0% 35%, rgba(169,139,255,.11), transparent 28rem),
    var(--bg);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.66;
}
a { color: inherit; }
img { max-width: 100%; height: auto; }
.skip-link { position: absolute; top: -5rem; left: 1rem; z-index: 30; padding: .7rem 1rem; background: var(--mint); color: #07120f; border-radius: 8px; font-weight: 900; }
.skip-link:focus { top: 1rem; }

.site-header { position: sticky; top: 0; z-index: 20; background: rgba(11,13,29,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.nav-wrap { width: min(var(--max), calc(100% - 2rem)); min-height: 74px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; font-weight: 950; }
.brand img { width: 44px; height: 44px; object-fit: contain; }
.nav-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .3rem; }
.nav-links a { padding: .58rem .75rem; color: var(--muted); text-decoration: none; border-radius: 10px; }
.nav-links a:hover, .nav-links a:focus-visible, .nav-links a[aria-current="page"] { color: var(--text); background: rgba(169,139,255,.15); }

.hero { width: min(var(--max), calc(100% - 2rem)); margin: auto; padding: 5rem 0 3.5rem; display: grid; grid-template-columns: 1.1fr .9fr; gap: 3.2rem; align-items: center; }
.label { color: var(--mint); font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .14em; }
h1, h2, h3 { line-height: 1.16; letter-spacing: -.025em; }
h1 { margin: .6rem 0 1rem; font-size: clamp(2.4rem, 6vw, 4.75rem); }
h2 { margin: 0 0 1rem; font-size: clamp(1.75rem, 4vw, 2.65rem); }
h3 { margin: 0 0 .55rem; font-size: 1.17rem; }
.lead { color: var(--muted); font-size: 1.08rem; max-width: 67ch; }
.device-frame { padding: 1rem; border: 1px solid var(--line); border-radius: 32px; background: linear-gradient(160deg, rgba(169,139,255,.18), rgba(21,24,45,.96)); box-shadow: 0 26px 70px rgba(0,0,0,.38); }
.device-frame img { display: block; border-radius: 24px; }

.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 1.45rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 46px; padding: .75rem 1.05rem; border: 1px solid var(--line); border-radius: 11px; text-decoration: none; font-weight: 900; }
.button.primary { color: #0b0d1d; background: linear-gradient(135deg, var(--mint), #9cf3dc); border-color: transparent; }
.button.secondary { background: rgba(255,255,255,.035); }
.note { margin-top: 1.2rem; padding: .9rem 1rem; color: #e5dcff; background: rgba(169,139,255,.08); border-left: 3px solid var(--violet); border-radius: 8px; font-size: .92rem; }

.section { width: min(var(--max), calc(100% - 2rem)); margin: auto; padding: 3.8rem 0; }
.section.alt { width: 100%; padding-inline: max(1rem, calc((100% - var(--max))/2)); background: rgba(255,255,255,.025); border-block: 1px solid rgba(255,255,255,.05); }
.section-head { max-width: 780px; margin-bottom: 1.5rem; }
.section-head p, .muted { color: var(--muted); }
.grid-2, .grid-3 { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.guide-card { padding: 1.35rem; background: linear-gradient(150deg, rgba(29,34,64,.96), rgba(21,24,45,.96)); border: 1px solid var(--line); border-radius: 16px; }
.guide-card p { color: var(--muted); }
.guide-card a { color: var(--mint); font-weight: 900; }
.icon-num { width: 2.25rem; height: 2.25rem; display: grid; place-items: center; margin-bottom: .8rem; color: #0b0d1d; background: var(--mint); border-radius: 10px; font-weight: 950; }

.menu-map { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: .8rem; }
.menu-item { padding: 1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; }
.menu-item strong { display: block; color: #d8cbff; }
.menu-item span { color: var(--muted); font-size: .9rem; }
.checklist { padding-left: 1.25rem; }
.checklist li { margin: .65rem 0; }
.info-table { width: 100%; border-collapse: collapse; }
.info-table th, .info-table td { padding: .85rem; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.info-table th { width: 30%; color: #d8cbff; }

.breadcrumbs { width: min(var(--max), calc(100% - 2rem)); margin: 1.35rem auto 0; color: var(--muted); font-size: .9rem; }
.breadcrumbs a { color: var(--mint); }
.article { width: min(880px, calc(100% - 2rem)); margin: auto; padding: 3rem 0 4rem; }
.article > section { margin-top: 2.8rem; }
.flow { display: grid; gap: 1rem; }
.flow article { position: relative; padding: 1.2rem 1.2rem 1.2rem 4.2rem; background: var(--surface); border: 1px solid var(--line); border-radius: 15px; }
.flow article b { position: absolute; left: 1.15rem; top: 1.1rem; width: 2.2rem; height: 2.2rem; display: grid; place-items: center; color: #0b0d1d; background: var(--blue); border-radius: 10px; }
.flow article p { margin-bottom: 0; color: var(--muted); }
details { margin: .75rem 0; padding: 1rem 1.1rem; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; }
summary { cursor: pointer; font-weight: 900; }
details p { color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); background: #080918; }
.footer-wrap { width: min(var(--max), calc(100% - 2rem)); margin: auto; padding: 2rem 0; display: flex; justify-content: space-between; gap: 1rem; color: var(--muted); font-size: .9rem; }
.footer-wrap p { margin: 0; }
.footer-wrap a { color: var(--mint); }

@media (max-width: 840px) {
  .nav-wrap { flex-direction: column; align-items: flex-start; padding: .85rem 0; }
  .nav-links { justify-content: flex-start; }
  .hero { grid-template-columns: 1fr; padding-top: 3.5rem; }
  .device-frame { max-width: 580px; }
  .grid-3, .menu-map { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 580px) {
  .grid-2, .grid-3, .menu-map { grid-template-columns: 1fr; }
  .actions .button { width: 100%; }
  .info-table th, .info-table td { display: block; width: 100%; }
  .info-table th { padding-bottom: .15rem; border-bottom: 0; }
  .footer-wrap { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }