:root {
  --bg: #070a12;
  --bg-2: #0c111d;
  --surface: rgba(20, 27, 45, 0.66);
  --border: rgba(120, 160, 255, 0.16);
  --border-strong: rgba(120, 200, 255, 0.36);
  --text: #e8eefc;
  --muted: #8fa0c4;
  --cyan: #35e6ff;
  --violet: #8b7bff;
  --accent: #4d7cff;
  --radius: 16px;
  --maxw: 1160px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font); color: var(--text); background: var(--bg);
  line-height: 1.65; overflow-x: hidden; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(rgba(90, 130, 220, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 130, 220, 0.07) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, #000 30%, transparent 78%);
  pointer-events: none; z-index: 0;
}
.bg-glow {
  position: fixed; inset: 0;
  background:
    radial-gradient(600px 380px at 12% -5%, rgba(53, 230, 255, 0.16), transparent 70%),
    radial-gradient(560px 420px at 88% 4%, rgba(139, 123, 255, 0.18), transparent 72%);
  pointer-events: none; z-index: 0;
}
main, .nav, .footer { position: relative; z-index: 1; }

.nav {
  position: sticky; top: 0; z-index: 50; backdrop-filter: blur(14px);
  background: rgba(7, 10, 18, 0.72); border-bottom: 1px solid var(--border);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; letter-spacing: 0.3px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 18px rgba(53, 230, 255, 0.55);
}
.brand-text { font-size: 1.05rem; }
.brand-text .dot { color: var(--cyan); }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 0.94rem; color: var(--muted); }
.nav-links a { transition: color 0.2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  padding: 8px 18px; border-radius: 999px; color: var(--text) !important;
  border: 1px solid var(--border-strong); background: rgba(53, 230, 255, 0.08);
}
.nav-cta:hover { background: rgba(53, 230, 255, 0.18); }
.nav-toggle { display: none; background: none; border: 0; color: var(--text); font-size: 1.4rem; cursor: pointer; }

.hero { padding: 84px 0 64px; }
.hero-inner { display: grid; grid-template-columns: 1.25fr 0.85fr; gap: 48px; align-items: center; }
.pill {
  display: inline-block; padding: 6px 14px; border-radius: 999px; font-size: 0.8rem;
  letter-spacing: 0.4px; color: var(--cyan); border: 1px solid var(--border-strong);
  background: rgba(53, 230, 255, 0.08); margin-bottom: 22px;
}
.pill-accent { color: var(--violet); border-color: rgba(139, 123, 255, 0.45); background: rgba(139, 123, 255, 0.1); }
.hero h1 { font-size: clamp(2rem, 4.4vw, 3.35rem); line-height: 1.18; font-weight: 800; letter-spacing: -0.5px; }
.grad {
  background: linear-gradient(100deg, var(--cyan), var(--violet) 70%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.lead { margin-top: 22px; color: var(--muted); font-size: 1.06rem; max-width: 34em; }
.hero-actions { display: flex; gap: 14px; margin-top: 32px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 12px 24px; border-radius: 12px; font-weight: 600; font-size: 0.95rem;
  cursor: pointer; border: 1px solid transparent; transition: transform 0.15s, box-shadow 0.2s, background 0.2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: linear-gradient(120deg, var(--cyan), var(--accent));
  color: #05101f; box-shadow: 0 10px 30px rgba(53, 230, 255, 0.28);
}
.btn-primary:hover { box-shadow: 0 14px 38px rgba(53, 230, 255, 0.42); }
.btn-ghost { border-color: var(--border-strong); color: var(--text); background: rgba(255, 255, 255, 0.03); }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.08); }

.hero-stats { display: flex; gap: 38px; margin-top: 44px; }
.hero-stats strong { display: block; font-size: 1.7rem; color: var(--text); }
.hero-stats span { font-size: 0.85rem; color: var(--muted); }

.hero-card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; backdrop-filter: blur(10px); box-shadow: 0 30px 60px rgba(0, 0, 0, 0.45);
}
.card-head { display: flex; align-items: center; gap: 10px; font-weight: 600; margin-bottom: 18px; }
.live-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cyan); box-shadow: 0 0 12px var(--cyan); animation: pulse 1.6s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.35; } }
.toc { list-style: none; display: grid; gap: 14px; }
.toc li { display: flex; gap: 12px; font-size: 0.95rem; color: var(--muted); padding-bottom: 14px; border-bottom: 1px solid rgba(255,255,255,0.06); }
.toc li span { color: var(--cyan); font-weight: 700; font-family: ui-monospace, monospace; }
.toc li:last-child { border-bottom: 0; padding-bottom: 0; }
.card-foot { display: flex; align-items: center; gap: 12px; margin-top: 22px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,0.06); }
.card-foot img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; border: 1px solid var(--border-strong); }
.card-foot strong { display: block; font-size: 0.92rem; }
.card-foot em { font-style: normal; font-size: 0.78rem; color: var(--muted); }

.band { margin-top: 20px; border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: linear-gradient(180deg, rgba(53,230,255,0.05), transparent); }
.band-inner { display: flex; align-items: center; gap: 32px; padding: 34px 24px; flex-wrap: wrap; }
.band-copy { flex: 1 1 380px; }
.band-copy h2 { font-size: 1.35rem; margin-bottom: 8px; }
.band-copy p { color: var(--muted); font-size: 0.94rem; }
.countdown { display: flex; gap: 12px; }
.cd-item { min-width: 66px; text-align: center; padding: 12px 8px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); }
.cd-item strong { display: block; font-size: 1.5rem; font-family: ui-monospace, monospace; color: var(--cyan); }
.cd-item span { font-size: 0.72rem; color: var(--muted); }

.section { padding: 76px 0; }
.section-alt { background: rgba(255, 255, 255, 0.015); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; margin-bottom: 34px; flex-wrap: wrap; }
.section-head h2 { font-size: 1.75rem; }
.section-head p { color: var(--muted); margin-top: 6px; font-size: 0.95rem; }
.link-more { color: var(--cyan); font-size: 0.92rem; }
.link-more:hover { text-decoration: underline; }

.feature {
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 0;
  border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  background: var(--surface); margin-bottom: 30px;
}
.feature-media { min-height: 300px; }
.feature-media img { width: 100%; height: 100%; object-fit: cover; }
.feature-body { padding: 34px; display: flex; flex-direction: column; align-items: flex-start; }
.feature-body h3 { font-size: 1.5rem; margin: 12px 0 12px; }
.feature-body p { color: var(--muted); font-size: 0.96rem; }
.feature .btn-ghost { margin-top: 22px; }
.tag {
  display: inline-block; font-size: 0.76rem; letter-spacing: 0.4px; color: var(--violet);
  border: 1px solid rgba(139, 123, 255, 0.4); background: rgba(139, 123, 255, 0.1);
  padding: 4px 11px; border-radius: 999px;
}
.meta { color: var(--muted); font-size: 0.82rem; margin-top: 14px; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; padding-bottom: 22px; transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
}
.card:hover { transform: translateY(-5px); border-color: var(--border-strong); box-shadow: 0 22px 44px rgba(0,0,0,0.5); }
.card img { width: 100%; height: 176px; object-fit: cover; margin-bottom: 18px; }
.card .tag, .card h3, .card p, .card .meta { margin-left: 22px; margin-right: 22px; }
.card h3 { font-size: 1.12rem; margin-top: 12px; margin-bottom: 8px; }
.card p { color: var(--muted); font-size: 0.9rem; }

.chips { display: flex; flex-wrap: wrap; gap: 14px; }
.chip { display: inline-flex; align-items: center; gap: 9px; padding: 12px 20px; border-radius: 999px; border: 1px solid var(--border); background: var(--surface); font-size: 0.95rem; transition: all 0.2s; }
.chip:hover { border-color: var(--border-strong); background: rgba(53,230,255,0.1); transform: translateY(-2px); }
.chip em { font-style: normal; color: var(--muted); font-size: 0.8rem; }

.subscribe {
  display: flex; align-items: center; gap: 44px; flex-wrap: wrap;
  border: 1px solid var(--border-strong); border-radius: 22px; padding: 44px;
  background: linear-gradient(130deg, rgba(53,230,255,0.1), rgba(139,123,255,0.1));
}
.subscribe-copy { flex: 1 1 340px; }
.subscribe-copy h2 { font-size: 1.7rem; margin-bottom: 10px; }
.subscribe-copy p { color: var(--muted); }
.subscribe-form { flex: 1 1 380px; display: flex; gap: 12px; flex-wrap: wrap; }
.subscribe-form input {
  flex: 1 1 220px; padding: 13px 18px; border-radius: 12px;
  border: 1px solid var(--border-strong); background: rgba(4, 8, 16, 0.7);
  color: var(--text); font-size: 0.95rem; font-family: var(--font); outline: none;
}
.subscribe-form input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(53,230,255,0.15); }
.form-msg { flex-basis: 100%; font-size: 0.88rem; min-height: 1.2em; color: var(--cyan); }

.footer { border-top: 1px solid var(--border); padding: 40px 0; margin-top: 20px; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer p { color: var(--muted); font-size: 0.86rem; }
.footer-links { display: flex; gap: 22px; font-size: 0.9rem; color: var(--muted); }
.footer-links a:hover { color: var(--text); }

.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 940px) {
  .hero-inner { grid-template-columns: 1fr; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .feature { grid-template-columns: 1fr; }
  .feature-media { min-height: 220px; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .nav-links.open { display: flex; flex-direction: column; position: absolute; top: 68px; left: 0; right: 0; background: rgba(7,10,18,0.97); padding: 20px 24px; gap: 16px; border-bottom: 1px solid var(--border); }
  .nav-toggle { display: block; }
  .grid { grid-template-columns: 1fr; }
  .band-inner { flex-direction: column; align-items: flex-start; }
  .subscribe { padding: 30px 24px; gap: 24px; }
  .hero { padding-top: 56px; }
}