:root {
  color-scheme: dark;
  --bg: #080b18;
  --panel: rgba(18, 24, 48, .68);
  --panel-strong: rgba(21, 28, 55, .92);
  --line: rgba(255, 255, 255, .12);
  --text: #f5f7ff;
  --muted: #b8c0dc;
  --cyan: #62e6ff;
  --violet: #a78bfa;
  --pink: #ff7ac6;
  --green: #64f4ac;
  --shadow: 0 24px 70px rgba(0, 0, 0, .35);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 10% 0%, rgba(54, 107, 255, .18), transparent 34rem),
    radial-gradient(circle at 90% 18%, rgba(244, 92, 190, .14), transparent 30rem),
    var(--bg);
  font-family: system-ui, -apple-system, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}
body::before, body::after {
  content: "";
  position: fixed;
  z-index: -1;
  width: 28rem;
  height: 28rem;
  border-radius: 50%;
  filter: blur(80px);
  opacity: .24;
  pointer-events: none;
  animation: drift 12s ease-in-out infinite alternate;
}
body::before { top: 12%; left: -10rem; background: #445dff; }
body::after { right: -10rem; bottom: 4%; background: #ff4da6; animation-delay: -4s; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
.skip-link { position: fixed; top: -80px; left: 16px; z-index: 99; padding: 10px 16px; color: #07101b; background: var(--cyan); border-radius: 10px; }
.skip-link:focus { top: 16px; }
.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(8, 11, 24, .78);
  backdrop-filter: blur(18px);
}
.nav { min-height: 76px; display: flex; align-items: center; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; font-weight: 800; letter-spacing: -.02em; }
.brand img { width: 42px; height: 42px; border-radius: 12px; }
.nav-links { display: flex; align-items: center; gap: 22px; }
.nav-links a { color: var(--muted); font-size: .95rem; font-weight: 650; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--text); }
.nav-toggle { display: none; color: var(--text); background: transparent; border: 1px solid var(--line); border-radius: 10px; padding: 8px 11px; font-size: 1.2rem; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid rgba(255, 255, 255, .16);
  border-radius: 14px;
  font-weight: 750;
  background: rgba(255, 255, 255, .07);
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); border-color: rgba(255, 255, 255, .32); background: rgba(255, 255, 255, .11); }
.button.primary { color: #06101c; border: 0; background: linear-gradient(120deg, var(--cyan), #8affd0); box-shadow: 0 10px 30px rgba(98, 230, 255, .18); }
.hero { min-height: 680px; display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; padding: 84px 0 70px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; padding: 7px 12px; border: 1px solid rgba(98, 230, 255, .24); border-radius: 999px; color: var(--cyan); background: rgba(98, 230, 255, .07); font-size: .85rem; font-weight: 750; }
h1, h2, h3 { margin: 0; line-height: 1.15; letter-spacing: -.035em; }
h1 { margin-top: 20px; font-size: clamp(2.65rem, 7vw, 5.7rem); }
h2 { font-size: clamp(2rem, 4.2vw, 3.4rem); }
h3 { font-size: 1.25rem; }
.gradient-text { color: transparent; background: linear-gradient(110deg, #fff 5%, var(--cyan) 40%, var(--violet) 68%, var(--pink)); background-clip: text; -webkit-background-clip: text; }
.lead { max-width: 680px; margin: 24px 0 30px; color: var(--muted); font-size: 1.12rem; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero-art { position: relative; padding: 18px; border: 1px solid var(--line); border-radius: 32px; background: linear-gradient(145deg, rgba(255,255,255,.10), rgba(255,255,255,.03)); box-shadow: var(--shadow); }
.hero-art::before { content: ""; position: absolute; inset: -2px; z-index: -1; border-radius: inherit; background: linear-gradient(135deg, rgba(98,230,255,.6), transparent 35%, rgba(255,122,198,.45)); filter: blur(14px); opacity: .52; }
.hero-art img { width: 880px; height: auto; aspect-ratio: 88 / 70; object-fit: cover; border-radius: 20px; }
.trust-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 26px; }
.trust-item { padding: 14px; border: 1px solid var(--line); border-radius: 14px; color: var(--muted); background: rgba(255,255,255,.04); text-align: center; }
.trust-item strong { display: block; color: var(--text); font-size: 1.05rem; }
section { padding: 90px 0; scroll-margin-top: 90px; }
.section-head { max-width: 720px; margin-bottom: 36px; }
.section-head p { color: var(--muted); }
.grid { display: grid; gap: 20px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.grid.four { grid-template-columns: repeat(4, 1fr); }
.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px;
  background: var(--panel);
  backdrop-filter: blur(18px);
  box-shadow: 0 14px 42px rgba(0, 0, 0, .16);
  transition: transform .25s ease, border-color .25s ease;
}
.card:hover { transform: translateY(-4px); border-color: rgba(98, 230, 255, .34); }
.card p, .muted { color: var(--muted); }
.icon { width: 46px; height: 46px; display: grid; place-items: center; margin-bottom: 20px; border: 1px solid rgba(255,255,255,.12); border-radius: 14px; background: linear-gradient(135deg, rgba(98,230,255,.15), rgba(167,139,250,.15)); font-size: 1.25rem; }
.detail { display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: center; }
.detail-logo { width: min(300px, 72vw); height: auto; aspect-ratio: 1; border-radius: 30%; box-shadow: 0 26px 80px rgba(98, 230, 255, .2); }
.check-list { list-style: none; padding: 0; margin: 26px 0 0; }
.check-list li { position: relative; padding: 10px 0 10px 34px; border-bottom: 1px solid var(--line); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--green); font-weight: 900; }
.platform { text-align: center; }
.platform .icon { margin-inline: auto; }
.seo-links a { display: block; height: 100%; }
.faq details { border: 1px solid var(--line); border-radius: 16px; margin-bottom: 12px; padding: 18px 22px; background: var(--panel); }
.faq summary { cursor: pointer; font-weight: 750; }
.faq details p { color: var(--muted); }
.page-hero { padding: 105px 0 58px; text-align: center; }
.page-hero h1 { max-width: 920px; margin-inline: auto; font-size: clamp(2.5rem, 6vw, 4.8rem); }
.page-hero .lead { margin-inline: auto; }
.steps { counter-reset: step; }
.step { position: relative; padding-left: 82px; }
.step::before { counter-increment: step; content: counter(step, decimal-leading-zero); position: absolute; left: 26px; top: 24px; color: var(--cyan); font-size: 1.25rem; font-weight: 850; }
.notice { border-left: 4px solid var(--cyan); padding: 20px 24px; border-radius: 0 14px 14px 0; color: var(--muted); background: rgba(98, 230, 255, .07); }
.cta { padding: 45px; text-align: center; background: linear-gradient(145deg, rgba(98,230,255,.12), rgba(167,139,250,.10), rgba(255,122,198,.10)); }
.cta p { max-width: 680px; margin: 14px auto 24px; }
.site-footer { margin-top: 80px; padding: 58px 0 24px; border-top: 1px solid var(--line); background: rgba(4, 7, 17, .54); }
.footer-grid { display: grid; grid-template-columns: 1.8fr repeat(3, 1fr); gap: 36px; }
.footer-title { margin-bottom: 14px; font-weight: 800; }
.footer-links { display: grid; gap: 8px; }
.footer-links a, .site-footer p { color: var(--muted); }
.footer-links a:hover { color: var(--cyan); }
.legal { display: flex; justify-content: space-between; gap: 20px; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); color: var(--muted); font-size: .86rem; }
@keyframes drift { to { transform: translate3d(40px, -30px, 0) scale(1.08); } }
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; position: absolute; top: 68px; left: 20px; right: 20px; flex-direction: column; align-items: stretch; padding: 18px; border: 1px solid var(--line); border-radius: 18px; background: var(--panel-strong); box-shadow: var(--shadow); }
  .nav-links.open { display: flex; }
  .hero { grid-template-columns: 1fr; }
  .hero-art { max-width: 650px; }
  .grid.four, .grid.three { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 620px) {
  .container { width: min(100% - 28px, 1160px); }
  section { padding: 68px 0; }
  .hero { min-height: auto; padding-top: 62px; gap: 42px; }
  h1 { font-size: clamp(2.45rem, 15vw, 4rem); }
  .trust-row, .grid.two, .grid.three, .grid.four, .detail, .footer-grid { grid-template-columns: 1fr; }
  .detail { text-align: left; }
  .detail-logo { margin-inline: auto; }
  .card { padding: 23px; }
  .legal { flex-direction: column; }
  .actions .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation: none !important; transition: none !important; }
}