:root {
  color-scheme: dark;
  --bg: #050d20;
  --bg-soft: #081230;
  --surface: #0f1a3a;
  --text: #ffffff;
  --text-soft: rgba(255, 255, 255, 0.78);
  --text-muted: rgba(255, 255, 255, 0.52);
  --border: rgba(255, 255, 255, 0.10);
  --border-soft: rgba(255, 255, 255, 0.06);
  --accent: #5d9eff;
  --accent-2: #8c66f2;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 72px; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", system-ui, "Segoe UI", sans-serif;
  font-feature-settings: "ss01", "kern";
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: #7eb3ff; text-decoration: underline; }
img { max-width: 100%; display: block; }

/* NAV */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: saturate(180%) blur(20px);
  background: rgba(5, 13, 32, 0.78);
  border-bottom: 1px solid var(--border-soft);
}
.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 14px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: var(--text);
  font-size: 15px;
}
.nav-brand img {
  height: 22px;
  width: auto;
  max-width: 40px;
  object-fit: contain;
  border-radius: 6px;
}
.nav-spacer { flex: 1; }
.nav a { color: var(--text-soft); font-weight: 400; }
.nav a:hover { color: var(--text); text-decoration: none; }

/* DOC HERO */
.doc-hero {
  position: relative;
  overflow: hidden;
  padding: 72px 24px 36px;
  background:
    radial-gradient(60% 50% at 50% 0%, rgba(140, 102, 242, 0.18) 0%, transparent 70%),
    linear-gradient(180deg, #050d20 0%, #0a1430 100%);
  border-bottom: 1px solid var(--border-soft);
}
.doc-hero-inner {
  max-width: 760px;
  margin: 0 auto;
}
.doc-crumbs {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 14px;
  letter-spacing: 0.02em;
}
.doc-crumbs a { color: var(--text-muted); }
.doc-crumbs a:hover { color: var(--text-soft); text-decoration: none; }
.doc-crumbs .sep { margin: 0 8px; opacity: 0.6; }
.doc-title {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin: 0 0 12px;
}
.doc-title .grad {
  background: linear-gradient(135deg, #ffffff 0%, #b9c4ff 60%, #c8a6ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.doc-sub {
  font-size: 16px;
  color: var(--text-muted);
  margin: 0;
}

/* DOC BODY */
.doc {
  max-width: 760px;
  margin: 0 auto;
  padding: 56px 24px 80px;
  font-size: 16px;
  color: var(--text-soft);
}
.doc h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  margin: 48px 0 14px;
  line-height: 1.25;
}
.doc h2:first-of-type { margin-top: 0; }
.doc h3 {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  margin: 32px 0 10px;
}
.doc p { margin: 0 0 14px; }
.doc ul {
  padding-left: 0;
  list-style: none;
  margin: 0 0 16px;
}
.doc ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 8px;
}
.doc ul li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 11px;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.7;
}
.doc strong { color: var(--text); font-weight: 600; }
.doc code {
  font-family: "SF Mono", ui-monospace, Menlo, monospace;
  font-size: 14px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-soft);
  padding: 2px 6px;
  border-radius: 6px;
  color: var(--text);
}

.doc-callout {
  background: linear-gradient(135deg, rgba(115, 217, 166, 0.10) 0%, rgba(93, 158, 255, 0.08) 100%);
  border: 1px solid rgba(115, 217, 166, 0.20);
  border-radius: 18px;
  padding: 18px 22px;
  margin: 28px 0;
  color: var(--text-soft);
  font-size: 15px;
}
.doc-callout strong { color: var(--text); }

/* SUPPORT FAQ */
.faq {
  margin: 0;
  padding: 0;
}
.faq details {
  border-top: 1px solid var(--border-soft);
  padding: 18px 0;
}
.faq details:last-child { border-bottom: 1px solid var(--border-soft); }
.faq summary {
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-weight: 300;
  font-size: 22px;
  color: var(--text-muted);
  transition: transform 0.2s ease;
  line-height: 1;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .answer {
  padding-top: 12px;
  color: var(--text-soft);
  font-size: 15.5px;
}
.faq .answer p { margin: 0 0 10px; }
.faq .answer p:last-child { margin-bottom: 0; }

/* CONTACT CARD */
.contact-card {
  background: linear-gradient(160deg, rgba(255,255,255,0.045) 0%, rgba(255,255,255,0.015) 100%);
  border: 1px solid var(--border-soft);
  border-radius: 22px;
  padding: 26px 28px;
  margin-top: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  flex-wrap: wrap;
}
.contact-card-text { font-size: 15px; color: var(--text-soft); }
.contact-card-text strong { color: var(--text); display: block; margin-bottom: 4px; font-size: 16px; }
.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 22px;
  font-size: 14.5px;
  font-weight: 500;
  border-radius: 980px;
  text-decoration: none;
  transition: all 0.15s ease;
}
.btn-primary {
  background: linear-gradient(135deg, #4d8bff 0%, #8c66f2 100%);
  color: #fff;
}
.btn-primary:hover { filter: brightness(1.1); text-decoration: none; }

/* FOOTER */
.footer {
  background: #02060f;
  color: rgba(255, 255, 255, 0.5);
  padding: 30px 24px 50px;
  font-size: 12px;
  text-align: center;
  border-top: 1px solid var(--border-soft);
}
.footer a { color: rgba(255, 255, 255, 0.6); }
.footer-nav {
  margin-bottom: 14px;
  display: flex;
  gap: 18px;
  justify-content: center;
  flex-wrap: wrap;
  font-size: 13px;
}
.footer-nav a { color: rgba(255, 255, 255, 0.7); }

@media (max-width: 600px) {
  .nav-inner { gap: 14px; padding: 12px 18px; font-size: 13px; }
  .doc-hero { padding: 48px 20px 28px; }
  .doc { padding: 40px 20px 64px; }
  .contact-card { flex-direction: column; align-items: flex-start; }
}