:root {
  --bg: #07090d;
  --bg-soft: #0d1119;
  --card: #111622;
  --card-2: #151c2a;
  --line: rgba(255, 255, 255, .09);
  --text: #eef2ff;
  --muted: #9aa7bd;
  --dim: #6e7c93;
  --accent: #8b5cf6;
  --accent-2: #22d3ee;
  --green: #3ddc97;
  --radius: 20px;
  --max: 1160px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 700px at 75% -10%, rgba(139, 92, 246, .18), transparent 60%),
    radial-gradient(900px 600px at 5% 15%, rgba(34, 211, 238, .08), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: "Microsoft YaHei UI", "Microsoft YaHei", "PingFang SC", "Noto Sans CJK SC", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
code { background: rgba(255,255,255,.07); padding: 1px 6px; border-radius: 6px; font-size: .92em; }

.top-notice {
  padding: 9px max(20px, calc((100% - var(--max)) / 2));
  background: linear-gradient(90deg, rgba(139,92,246,.2), rgba(34,211,238,.1));
  border-bottom: 1px solid var(--line); color: #d9e1f2; font-size: 12px;
  text-align: center;
}
.top-notice b { color: #fff; }
.top-notice .pin {
  display: inline-block; padding: 1px 7px; margin-right: 8px; border-radius: 5px;
  background: var(--accent); color: #fff; font-size: 10px; font-weight: 800;
}
.topbar {
  position: sticky; top: 0; z-index: 20;
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  max-width: 100%; padding: 14px max(20px, calc((100% - var(--max)) / 2));
  background: rgba(7, 9, 13, .82);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: 2px; }
.brand small { color: var(--dim); font-weight: 400; letter-spacing: 0; font-size: 11px; }
.brand-mark {
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: linear-gradient(135deg, var(--accent), #5b21b6);
  box-shadow: 0 8px 24px rgba(139, 92, 246, .35);
  font-weight: 900; letter-spacing: 0;
}
.topbar nav { display: flex; align-items: center; gap: 20px; font-size: 13px; color: var(--muted); }
.topbar nav a:hover { color: var(--text); }
.nav-download {
  padding: 7px 16px; border-radius: 9px; color: white !important;
  background: linear-gradient(135deg, var(--accent), #6d28d9);
  font-weight: 600;
}

main { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.hero {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 48px; align-items: center;
  padding: 84px 0 56px;
}
.eyebrow { color: var(--accent-2); font-size: 11px; letter-spacing: 3px; font-weight: 700; margin-bottom: 14px; }
h1 { font-size: clamp(36px, 5vw, 64px); line-height: 1.12; margin: 0 0 22px; letter-spacing: -1px; }
h1 .accent { background: linear-gradient(100deg, #c4b5fd, #8b5cf6 45%, #22d3ee); -webkit-background-clip: text; background-clip: text; color: transparent; }
h2 { font-size: clamp(26px, 3.2vw, 40px); line-height: 1.2; margin: 0 0 10px; letter-spacing: -.5px; }
h3 { margin: 0 0 8px; font-size: 16px; }
p { margin: 0 0 12px; }
.lead { color: var(--muted); font-size: 16px; max-width: 560px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 26px 0 22px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 46px; padding: 0 24px; border-radius: 12px; font-weight: 700; font-size: 14px;
  border: 1px solid transparent; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn.primary { background: linear-gradient(135deg, var(--accent), #6d28d9); box-shadow: 0 10px 30px rgba(139, 92, 246, .35); }
.btn.ghost { border-color: var(--line); background: rgba(255,255,255,.04); color: var(--text); }
.hero-points { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 8px 18px; color: var(--dim); font-size: 12px; }
.hero-points li::before { content: "✓"; color: var(--green); margin-right: 6px; }
.hero-shot { position: relative; }
.hero-shot img {
  border-radius: var(--radius); border: 1px solid var(--line);
  box-shadow: 0 30px 80px rgba(0,0,0,.55);
  position: relative; z-index: 2;
}
.hero-shot .glow {
  position: absolute; inset: 10% -8% -6% 8%; z-index: 1;
  background: linear-gradient(135deg, rgba(139,92,246,.45), rgba(34,211,238,.18));
  filter: blur(60px); border-radius: 50%;
}

.strip {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
  padding: 18px; border: 1px solid var(--line); border-radius: 16px;
  background: rgba(255,255,255,.025);
}
.strip div { text-align: center; }
.strip strong { display: block; font-size: 20px; }
.strip span { color: var(--dim); font-size: 11px; }

.section { padding: 76px 0 8px; }
.section-head { max-width: 720px; margin-bottom: 28px; }
.section-head p { color: var(--muted); }
.grid { display: grid; gap: 14px; }
.features { grid-template-columns: repeat(3, 1fr); }
.card {
  background: linear-gradient(160deg, var(--card), var(--bg-soft));
  border: 1px solid var(--line); border-radius: 16px; padding: 22px;
  transition: transform .16s ease, border-color .16s ease;
}
.card:hover { transform: translateY(-3px); border-color: rgba(139,92,246,.45); }
.card p { color: var(--muted); font-size: 13px; margin: 0; }
.icon {
  width: 42px; height: 42px; border-radius: 12px; display: grid; place-items: center;
  background: rgba(139,92,246,.14); border: 1px solid rgba(139,92,246,.32);
  color: #c4b5fd; font-weight: 800; font-size: 12px; margin-bottom: 14px;
}
.shots { grid-template-columns: repeat(2, 1fr); }
.shots figure { margin: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden; background: var(--card); }
.shots img { width: 100%; }
.shots figcaption { padding: 10px 14px; color: var(--dim); font-size: 12px; border-top: 1px solid var(--line); }

.steps { counter-reset: step; list-style: none; padding: 0; display: grid; gap: 12px; }
.steps li {
  counter-increment: step; position: relative; padding: 18px 20px 18px 64px;
  border: 1px solid var(--line); border-radius: 14px; background: rgba(255,255,255,.025);
}
.steps li::before {
  content: counter(step); position: absolute; left: 18px; top: 16px;
  width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center;
  background: rgba(34,211,238,.12); color: var(--accent-2); font-weight: 800;
}
.steps b { display: block; margin-bottom: 2px; }
.steps p { color: var(--muted); margin: 0; font-size: 13px; }
.callout {
  margin-top: 18px; padding: 16px 18px; border-radius: 12px;
  border: 1px solid rgba(221, 214, 254, .18); background: rgba(139,92,246,.08);
}
.callout strong { color: #ddd6fe; }
.callout p { color: var(--muted); margin: 4px 0 0; font-size: 13px; }

.split { display: grid; grid-template-columns: 1fr 1.05fr; gap: 36px; align-items: start; }
.split.reverse .section-head { order: 2; }
.panel { border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.025); padding: 22px; }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.checks li { color: var(--muted); font-size: 13px; padding-left: 20px; position: relative; }
.checks li::before { content: "✓"; color: var(--green); position: absolute; left: 0; }
.checks b { color: var(--text); }

details {
  border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px;
  background: rgba(255,255,255,.02); margin-bottom: 10px;
}
summary { cursor: pointer; font-weight: 600; }
details p { color: var(--muted); font-size: 13px; margin: 10px 0 0; }

.download {
  display: grid; grid-template-columns: 1.2fr .8fr; gap: 36px;
  padding: 70px 0; margin-top: 40px; border-top: 1px solid var(--line);
}
.legal p { color: var(--muted); font-size: 12px; }
.platforms {
  display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 18px 0 10px;
}
.platform {
  display: flex; flex-direction: column; gap: 4px; align-items: flex-start;
  padding: 14px; border: 1px solid var(--line); border-radius: 12px;
  background: rgba(255,255,255,.025);
}
.platform b { font-size: 14px; }
.platform span { color: var(--dim); font-size: 11px; margin-bottom: 8px; }
.platform .btn { height: 34px; padding: 0 14px; font-size: 12px; }
.platform.ready { border-color: rgba(139,92,246,.45); }
.platform.soon { opacity: .72; }
.small { color: var(--dim); font-size: 11px; }
footer {
  border-top: 1px solid var(--line); padding: 28px 20px 40px; text-align: center;
  color: var(--dim); font-size: 12px;
}
footer .brand { justify-content: center; margin-bottom: 8px; }

@media (max-width: 900px) {
  .hero, .split, .download { grid-template-columns: 1fr; }
  .features { grid-template-columns: repeat(2, 1fr); }
  .split.reverse .section-head { order: 0; }
  .topbar { flex-direction: column; align-items: flex-start; gap: 8px; }
  .topbar nav { width: 100%; overflow-x: auto; padding-bottom: 4px; gap: 14px; white-space: nowrap; }
}
@media (max-width: 600px) {
  .features, .shots, .strip { grid-template-columns: 1fr; }
  .hero { padding-top: 48px; }
  .section { padding-top: 52px; }
  .btn { width: 100%; }
}