:root {
  --bg: #0b1220;
  --panel: #121a2b;
  --line: #243049;
  --text: #e8eefc;
  --muted: #9aa8c7;
  --accent: #5b8cff;
  --accent2: #3dd6c6;
  --warn: #f0b429;
  --radius: 14px;
  --font: "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 600px at 10% -10%, #1a2744, transparent),
              radial-gradient(900px 500px at 90% 0%, #12333a, transparent),
              var(--bg);
  color: var(--text);
  line-height: 1.6;
}
a { color: var(--accent2); text-decoration: none; }
a:hover { text-decoration: underline; }
.top {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 14px 22px;
  backdrop-filter: blur(12px);
  background: rgba(11, 18, 32, 0.82);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .mark {
  width: 12px; height: 12px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 16px rgba(91, 140, 255, 0.7);
}
.brand .sub { display: block; font-size: 12px; color: var(--muted); font-weight: 400; }
nav { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
nav a { color: var(--muted); font-size: 14px; }
nav a.cta {
  color: #061018; background: var(--accent2); padding: 6px 12px;
  border-radius: 999px; font-weight: 600; text-decoration: none;
}
main { max-width: 960px; margin: 0 auto; padding: 28px 20px 64px; }
.hero h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); line-height: 1.25; margin: 8px 0 14px; }
.hero h1 em { font-style: normal; color: var(--accent2); }
.eyebrow { color: var(--accent); letter-spacing: 0.06em; text-transform: uppercase; font-size: 12px; margin: 0; }
.lead { color: var(--muted); max-width: 42rem; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 20px 0 14px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 10px 16px; border-radius: 10px; border: 1px solid var(--line);
  font-weight: 600; cursor: pointer; text-decoration: none; color: var(--text);
  background: transparent;
}
.btn.primary { background: linear-gradient(135deg, var(--accent), #3a6df0); border: none; color: #fff; }
.btn.ghost { background: rgba(255,255,255,0.04); }
.pills { display: flex; gap: 8px; flex-wrap: wrap; padding: 0; list-style: none; margin: 0; }
.pills li {
  font-size: 12px; color: var(--muted); border: 1px solid var(--line);
  padding: 4px 10px; border-radius: 999px; background: rgba(255,255,255,0.03);
}
.panel {
  margin-top: 36px; padding: 22px;
  background: rgba(18, 26, 43, 0.85);
  border: 1px solid var(--line); border-radius: var(--radius);
}
.panel h2 { margin-top: 0; }
.grid3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.grid3 article, .price-grid article {
  background: rgba(255,255,255,0.03); border: 1px solid var(--line);
  border-radius: 12px; padding: 14px 16px;
}
.muted { color: var(--muted); font-size: 14px; }
.sample-card {
  border: 1px solid var(--line); border-radius: 12px; padding: 16px 18px;
  background: linear-gradient(180deg, rgba(91,140,255,0.08), transparent);
}
.sample-card header {
  display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap;
  font-size: 12px; color: var(--muted); margin-bottom: 8px;
}
.sample-card .score { color: var(--warn); }
.price-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.price-grid .featured { border-color: rgba(61, 214, 198, 0.5); box-shadow: 0 0 0 1px rgba(61,214,198,0.2); }
.price { font-size: 1.6rem; font-weight: 700; margin: 6px 0 10px; }
.price span { font-size: 0.85rem; color: var(--muted); font-weight: 500; }
.waitlist fieldset {
  border: 1px solid var(--line); border-radius: 12px; padding: 16px;
  margin: 0 0 18px; display: grid; gap: 10px;
}
.waitlist label { display: grid; gap: 4px; font-size: 13px; color: var(--muted); }
.waitlist input, .waitlist select, .waitlist textarea {
  width: 100%; padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: #0a101c; color: var(--text);
  font: inherit;
}
.status {
  margin-top: 8px; padding: 10px 12px; border-radius: 8px;
  background: rgba(61, 214, 198, 0.12); border: 1px solid rgba(61, 214, 198, 0.35);
  color: var(--accent2); font-size: 14px;
}
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 24px; }
code { font-size: 0.9em; background: rgba(255,255,255,0.06); padding: 1px 6px; border-radius: 4px; }
@media (max-width: 640px) {
  .top { flex-direction: column; align-items: flex-start; }
}

.status.ok {
  background: rgba(61, 214, 198, 0.12); border-color: rgba(61, 214, 198, 0.45); color: var(--accent2);
}
.status.err {
  background: rgba(240, 100, 100, 0.12); border-color: rgba(240, 100, 100, 0.45); color: #ffb4b4;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }