:root {
  color-scheme: dark;
  --bg: #081019;
  --bg-deep: #050b12;
  --surface: #111b27;
  --surface-2: #162231;
  --line: #283546;
  --text: #f1f4f8;
  --muted: #a7b0be;
  --purple: #6d2df5;
  --purple-bright: #7c3cff;
  --mint: #68e7c7;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: radial-gradient(circle at 72% 14%, rgba(45, 78, 112, .18), transparent 34%), var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
.site-header {
  width: min(var(--max), calc(100% - 48px));
  height: 82px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255,255,255,.07);
}
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; font-size: 21px; font-weight: 760; letter-spacing: -.02em; }
.brand img { border-radius: 10px; box-shadow: 0 10px 28px rgba(0,0,0,.35); }
.header-link { color: var(--muted); text-decoration: none; font-weight: 620; }
.header-link:hover { color: var(--text); }
main { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; }
.hero { min-height: 650px; display: grid; grid-template-columns: .88fr 1.12fr; gap: 64px; align-items: center; padding: 72px 0 86px; }
.hero h1 { margin: 0 0 24px; max-width: 600px; font-size: clamp(48px, 5.2vw, 74px); line-height: .98; letter-spacing: -.055em; }
.hero p { max-width: 600px; margin: 7px 0; color: var(--muted); font-size: 18px; }
.hero .hero-cn { color: #c9d0da; }
.actions { display: flex; align-items: center; gap: 12px; margin-top: 32px; flex-wrap: wrap; }
.button { min-height: 52px; display: inline-flex; align-items: center; justify-content: center; gap: 10px; padding: 0 22px; border-radius: 10px; text-decoration: none; font-weight: 720; transition: transform .18s ease, background .18s ease; }
.button:hover { transform: translateY(-2px); }
.button svg { width: 21px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.primary { background: var(--purple); box-shadow: 0 16px 38px rgba(109,45,245,.25); }
.primary:hover { background: var(--purple-bright); }
.secondary { color: #d9dee7; background: rgba(255,255,255,.045); }
.secondary:hover { background: rgba(255,255,255,.085); }
.proof { display: flex; gap: 27px; padding: 0; margin: 32px 0 0; list-style: none; color: var(--muted); font-size: 14px; }
.proof li:not(:first-child)::before { content: "·"; margin-right: 27px; color: #667282; }
.product-shot { margin: 0; overflow: hidden; border: 1px solid #344255; border-radius: 17px; background: #0c141e; box-shadow: 0 38px 90px rgba(0,0,0,.42); }
.product-shot img { width: 100%; height: auto; display: block; }
.features { padding: 90px 0; border-top: 1px solid rgba(255,255,255,.07); }
.showcase { padding: 90px 0; border-top: 1px solid rgba(255,255,255,.07); }
.showcase-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.showcase figure { margin: 0; overflow: hidden; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); }
.showcase img { width: 100%; height: auto; display: block; }
.showcase figcaption { padding: 14px 18px; color: var(--muted); font-size: 14px; }
.section-heading { text-align: center; margin-bottom: 42px; }
h2 { margin: 0; font-size: clamp(31px, 3.2vw, 46px); letter-spacing: -.035em; line-height: 1.08; }
.section-heading p, .download > p { color: var(--muted); font-size: 17px; }
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.feature-grid article { padding: 26px; min-height: 245px; border: 1px solid var(--line); border-radius: 15px; background: linear-gradient(145deg, rgba(24,37,53,.94), rgba(13,23,34,.94)); }
.feature-icon { width: 48px; height: 48px; display: grid; place-items: center; border-radius: 11px; background: rgba(109,45,245,.24); color: #b995ff; font-size: 18px; font-weight: 830; }
.feature-grid h3 { margin: 22px 0 8px; font-size: 20px; }
.feature-grid p { margin: 0; color: var(--muted); }
.languages { margin: 10px 0 78px; padding: 34px 40px; display: grid; grid-template-columns: 72px 1fr; gap: 25px; align-items: center; border: 1px solid var(--line); border-radius: 15px; background: var(--surface); }
.languages .globe { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 50%; background: rgba(109,45,245,.3); color: #b995ff; font-size: 42px; font-weight: 250; }
.languages h2 { font-size: 27px; }
.languages p { margin: 7px 0 0; color: var(--muted); }
.download { margin-bottom: 48px; padding: 58px 24px; text-align: center; border: 1px solid var(--line); border-radius: 17px; background: var(--surface); }
.centered { justify-content: center; }
footer { width: min(var(--max), calc(100% - 48px)); margin: 0 auto; padding: 0 0 42px; text-align: center; color: var(--muted); font-size: 13px; }
footer a { color: #dfe5ed; }
.disclaimer { max-width: 780px; margin: 18px auto 0; font-size: 11px; color: #717d8d; }

@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; gap: 44px; padding-top: 54px; }
  .hero-copy { text-align: center; }
  .hero h1, .hero p { margin-left: auto; margin-right: auto; }
  .actions, .proof { justify-content: center; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .showcase-grid { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  .site-header, main, footer { width: min(100% - 28px, var(--max)); }
  .site-header { height: 68px; }
  .brand { font-size: 18px; }
  .brand img { width: 36px; height: 36px; }
  .header-link { font-size: 13px; }
  .hero { min-height: auto; padding: 46px 0 64px; }
  .hero h1 { font-size: 44px; }
  .hero p { font-size: 16px; }
  .button { width: 100%; }
  .proof { gap: 10px; font-size: 12px; }
  .proof li:not(:first-child)::before { margin-right: 10px; }
  .feature-grid { grid-template-columns: 1fr; }
  .feature-grid article { min-height: 0; }
  .languages { grid-template-columns: 1fr; padding: 28px; }
  .languages .globe { width: 54px; height: 54px; font-size: 34px; }
  .download { padding: 44px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .button { transition: none; }
}