:root {
  color-scheme: dark;
  --bg: #050914;
  --bg-soft: #0b1220;
  --surface: rgba(17, 24, 39, .78);
  --surface-strong: #111827;
  --text: #f8fafc;
  --muted: #a7b1c2;
  --line: rgba(148, 163, 184, .18);
  --blue: #3b82f6;
  --cyan: #38bdf8;
  --green: #22c55e;
  --danger: #ef4444;
  --radius: 22px;
  --shadow: 0 22px 70px rgba(0, 0, 0, .36);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 15% 5%, rgba(56, 189, 248, .13), transparent 30rem),
    radial-gradient(circle at 90% 10%, rgba(37, 99, 235, .16), transparent 32rem),
    var(--bg);
  color: var(--text);
  line-height: 1.65;
}
a { color: var(--cyan); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.container { width: min(1120px, calc(100% - 36px)); margin-inline: auto; }

.skip-link { position: fixed; left: 12px; top: -60px; z-index: 100; background: white; color: #111; padding: 10px 14px; border-radius: 10px; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky; top: 0; z-index: 20;
  backdrop-filter: blur(18px);
  background: rgba(5, 9, 20, .78);
  border-bottom: 1px solid var(--line);
}
.nav { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--text); font-weight: 800; letter-spacing: -.02em; }
.brand:hover { text-decoration: none; }
.brand img { width: 42px; height: 42px; border-radius: 11px; box-shadow: 0 0 28px rgba(56, 189, 248, .2); }
.brand span span { color: var(--cyan); }
.nav-links { display: flex; flex-wrap: wrap; align-items: center; justify-content: flex-end; gap: 7px; }
.nav-links a { color: #dbe4f1; padding: 9px 11px; border-radius: 10px; font-size: .94rem; }
.nav-links a:hover, .nav-links a[aria-current="page"] { background: rgba(59, 130, 246, .13); text-decoration: none; color: white; }
.menu-button { display: none; border: 1px solid var(--line); background: var(--surface); color: white; border-radius: 12px; padding: 10px 12px; font: inherit; }

.hero { padding: 92px 0 66px; }
.hero-grid { display: grid; grid-template-columns: 1.2fr .8fr; align-items: center; gap: 56px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; margin-bottom: 18px; color: #c8e9ff; font-weight: 700; font-size: .9rem; letter-spacing: .08em; text-transform: uppercase; }
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--green); box-shadow: 0 0 16px rgba(34, 197, 94, .8); }
h1 { font-size: clamp(2.55rem, 6vw, 5rem); line-height: 1.02; letter-spacing: -.055em; margin: 0 0 22px; }
.gradient-text { background: linear-gradient(90deg, #f8fafc 5%, #7dd3fc 55%, #3b82f6 100%); color: transparent; background-clip: text; -webkit-background-clip: text; }
.lead { max-width: 720px; color: #bac4d4; font-size: clamp(1.08rem, 2vw, 1.28rem); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 8px; padding: 13px 18px; min-height: 48px; border-radius: 13px; font-weight: 750; border: 1px solid transparent; transition: .2s ease; }
.button:hover { transform: translateY(-1px); text-decoration: none; }
.button-primary { color: white; background: linear-gradient(135deg, var(--cyan), var(--blue)); box-shadow: 0 14px 36px rgba(37, 99, 235, .28); }
.button-secondary { color: #e6edf8; background: rgba(17, 24, 39, .8); border-color: var(--line); }
.button-danger { color: white; background: linear-gradient(135deg, #ef4444, #b91c1c); }
.hero-card { position: relative; padding: 34px; border: 1px solid var(--line); border-radius: 34px; background: linear-gradient(145deg, rgba(17, 24, 39, .92), rgba(7, 13, 25, .78)); box-shadow: var(--shadow); overflow: hidden; }
.hero-card::before { content: ""; position: absolute; inset: -40% 10% 50% -10%; background: radial-gradient(circle, rgba(56, 189, 248, .28), transparent 60%); }
.hero-logo { display: block; width: min(280px, 80%); margin: 0 auto 25px; position: relative; filter: drop-shadow(0 22px 35px rgba(0,0,0,.35)); }
.mini-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; position: relative; }
.mini-stat { padding: 13px 10px; text-align: center; border-radius: 15px; background: rgba(255,255,255,.035); border: 1px solid var(--line); }
.mini-stat strong { display: block; font-size: 1.15rem; }
.mini-stat span { color: var(--muted); font-size: .76rem; }

.section { padding: 74px 0; }
.section-tight { padding: 44px 0; }
.section-head { max-width: 760px; margin-bottom: 32px; }
.section h2, .page-hero h1 { font-size: clamp(2rem, 4vw, 3.3rem); line-height: 1.12; letter-spacing: -.04em; margin: 0 0 14px; }
.section-head p, .page-hero p { color: var(--muted); font-size: 1.06rem; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card { padding: 25px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); box-shadow: 0 16px 42px rgba(0,0,0,.15); }
.card h3 { margin: 12px 0 8px; font-size: 1.12rem; }
.card p { margin: 0; color: var(--muted); }
.icon { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; color: #dff6ff; background: linear-gradient(135deg, rgba(56,189,248,.22), rgba(37,99,235,.22)); border: 1px solid rgba(56,189,248,.22); font-size: 1.25rem; }
.banner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 24px; padding: 30px; border-radius: 26px; border: 1px solid rgba(56,189,248,.24); background: linear-gradient(110deg, rgba(14,165,233,.12), rgba(37,99,235,.13)); }
.banner h2 { margin: 0 0 8px; font-size: clamp(1.55rem, 3vw, 2.25rem); }
.banner p { margin: 0; color: var(--muted); }

.page-hero { padding: 70px 0 34px; }
.breadcrumbs { color: var(--muted); font-size: .9rem; margin-bottom: 16px; }
.content-layout { display: grid; grid-template-columns: minmax(0, 1fr) 270px; gap: 36px; align-items: start; padding-bottom: 80px; }
.prose { min-width: 0; }
.prose h2 { margin: 42px 0 12px; font-size: 1.55rem; letter-spacing: -.025em; }
.prose h3 { margin: 26px 0 10px; font-size: 1.18rem; }
.prose p, .prose li { color: #c3ccda; }
.prose ul, .prose ol { padding-left: 1.35rem; }
.prose strong { color: #f3f6fb; }
.prose .note { padding: 18px 20px; border-left: 4px solid var(--cyan); border-radius: 12px; background: rgba(56,189,248,.08); color: #d7effd; }
.prose .warning { padding: 18px 20px; border-left: 4px solid #f59e0b; border-radius: 12px; background: rgba(245,158,11,.08); color: #f8e6be; }
.prose .danger-box { padding: 22px; border: 1px solid rgba(239,68,68,.35); border-radius: 18px; background: rgba(127,29,29,.18); }
.sidebar { position: sticky; top: 98px; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: rgba(17,24,39,.62); }
.sidebar strong { display: block; margin-bottom: 10px; }
.sidebar a { display: block; color: #cbd5e1; padding: 7px 5px; font-size: .92rem; }
.metadata { display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--muted); font-size: .9rem; margin-top: 18px; }
.faq { display: grid; gap: 12px; }
details { border: 1px solid var(--line); border-radius: 16px; background: var(--surface); padding: 18px 20px; }
summary { cursor: pointer; font-weight: 750; }
details p { color: var(--muted); }
.contact-card { display: grid; grid-template-columns: 1fr auto; gap: 20px; align-items: center; padding: 26px; border-radius: 22px; border: 1px solid var(--line); background: var(--surface); }
code { color: #bae6fd; background: rgba(56,189,248,.08); padding: .12em .35em; border-radius: 6px; }

.site-footer { border-top: 1px solid var(--line); padding: 34px 0; color: var(--muted); }
.footer-grid { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; }
.footer-links { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 14px; }
.footer-links a { color: #bac4d4; }
.small { font-size: .88rem; }

@media (max-width: 900px) {
  .hero-grid, .content-layout { grid-template-columns: 1fr; }
  .hero { padding-top: 64px; }
  .hero-card { max-width: 560px; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .sidebar { position: static; order: -1; }
}
@media (max-width: 720px) {
  .menu-button { display: inline-flex; }
  .nav-links { display: none; position: absolute; top: 74px; left: 18px; right: 18px; padding: 12px; border: 1px solid var(--line); border-radius: 16px; background: #0a1020; box-shadow: var(--shadow); }
  .nav-links.open { display: grid; }
  .nav-links a { padding: 12px; }
  .grid-3, .banner, .contact-card, .footer-grid { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
  h1 { font-size: clamp(2.5rem, 14vw, 4.1rem); }
}
@media (max-width: 450px) {
  .container { width: min(100% - 24px, 1120px); }
  .hero-card, .card, .banner { border-radius: 19px; }
  .mini-stats { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}