:root {
  --bg: #070910;
  --text: #f4f6fb;
  --muted: #9aa3b8;
  --line: rgba(255, 255, 255, 0.1);
  --card: rgba(255, 255, 255, 0.04);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", "Segoe UI", sans-serif;
  line-height: 1.7;
  background:
    radial-gradient(920px 480px at 8% -8%, rgba(124, 106, 247, 0.32), transparent 58%),
    radial-gradient(720px 420px at 96% 0%, rgba(62, 224, 197, 0.14), transparent 54%),
    var(--bg);
}
a { color: inherit; text-decoration: none; }
.wrap { width: min(1120px, calc(100% - 40px)); margin: 0 auto; }
nav {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 22px;
  padding: 16px 0;
  background: rgba(7, 9, 16, 0.72);
  backdrop-filter: blur(16px);
}
.logo { display: inline-flex; align-items: center; gap: 10px; margin-right: auto; font-weight: 700; letter-spacing: -0.03em; }
.mark {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  background: linear-gradient(135deg, #8d7cff, #3ee0c5);
  box-shadow: 0 0 18px rgba(124, 106, 247, 0.45);
}
nav a.quiet { color: var(--muted); font-size: 14px; }
nav a.quiet:hover { color: var(--text); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  padding: 11px 18px;
  font-weight: 650;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.04);
}
.btn.primary {
  border-color: transparent;
  background: linear-gradient(135deg, #8d7cff, #6a56f0);
  color: white;
  box-shadow: 0 10px 28px rgba(124, 106, 247, 0.32);
}
.hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 48px;
  align-items: center;
  padding: 64px 0 28px;
}
.eyebrow {
  display: inline-block;
  margin: 0;
  border: 1px solid rgba(141, 124, 255, 0.45);
  background: rgba(124, 106, 247, 0.16);
  border-radius: 999px;
  padding: 3px 10px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: #ddd7ff;
}
h1 {
  margin: 16px 0 0;
  font-size: clamp(44px, 6vw, 72px);
  line-height: 1.02;
  letter-spacing: -0.045em;
}
h1 span {
  display: block;
  background: linear-gradient(90deg, #d8ccff, #7ef0dc);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.lede { max-width: 520px; margin: 16px 0 0; color: var(--muted); font-size: 17px; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.points { display: flex; gap: 18px; flex-wrap: wrap; margin: 22px 0 0; padding: 0; list-style: none; color: var(--muted); font-size: 13px; }
.points li::before { content: ""; display: inline-block; width: 6px; height: 6px; margin-right: 8px; border-radius: 99px; background: #3ee0c5; vertical-align: 1px; }
.stage {
  border: 1px solid rgba(141, 124, 255, 0.35);
  border-radius: 24px;
  background:
    radial-gradient(280px 140px at 100% 0%, rgba(62, 224, 197, 0.16), transparent 60%),
    linear-gradient(160deg, rgba(124, 106, 247, 0.18), rgba(255, 255, 255, 0.03));
  padding: 14px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.28);
}
.stage-bar { display: flex; align-items: center; gap: 6px; padding: 4px 6px 12px; color: var(--muted); font-size: 12px; }
.stage-bar i { width: 8px; height: 8px; border-radius: 99px; background: rgba(255, 255, 255, 0.18); }
.stage-bar i:first-child { background: #8d7cff; }
.stage-bar span { margin-left: 6px; }
.stage img { display: block; width: 100%; border-radius: 16px; }
.prompt {
  margin: 0 0 12px;
  border-radius: 14px;
  background: rgba(7, 9, 16, 0.45);
  padding: 12px 14px;
  font-size: 14px;
}
.prompt.follow { margin: 12px 0 0; color: #d5deee; }
section { padding: 28px 0 8px; }
.section-head { max-width: 640px; margin-bottom: 18px; }
.section-head h2 { margin: 10px 0 0; font-size: clamp(28px, 3vw, 40px); letter-spacing: -0.03em; line-height: 1.2; }
.gallery, .features, .steps, .price-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery article, .features article, .steps article, .price-card {
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--card);
  padding: 14px;
}
.gallery img { display: block; width: 100%; border-radius: 14px; }
.gallery h3, .features h3, .steps h3, .price-card h3 { margin: 12px 4px 8px; font-size: 16px; }
.features article, .steps article { padding: 22px 20px; }
.features span, .steps span {
  display: block;
  margin-bottom: 18px;
  color: #b7adff;
  font-size: 13px;
  letter-spacing: 0.14em;
}
.features p, .steps p, .price-card p, .faq p { color: var(--muted); margin: 0; }
.steps { margin-bottom: 12px; }
.price-grid { margin-bottom: 20px; }
.price-card { display: flex; min-height: 180px; flex-direction: column; padding: 22px 20px; }
.price-card p { flex: 1; }
.price-num { margin-top: 18px; color: var(--text); font-size: 32px; font-weight: 680; letter-spacing: -0.04em; }
.price-num small { margin-right: 2px; font-size: 0.55em; }
.price-num span { color: var(--muted); font-size: 14px; font-weight: 500; letter-spacing: 0; }
.waiting { color: var(--muted); }
.faq { max-width: 760px; margin-bottom: 12px; }
.faq details { border-top: 1px solid var(--line); padding: 4px 0; }
.faq summary { cursor: pointer; padding: 14px 0; font-weight: 650; }
.faq details p { padding-bottom: 12px; }
.close {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin: 28px 0 8px;
  border: 1px solid rgba(141, 124, 255, 0.35);
  border-radius: 24px;
  background:
    radial-gradient(420px 160px at 100% 0%, rgba(62, 224, 197, 0.14), transparent 60%),
    linear-gradient(135deg, rgba(124, 106, 247, 0.22), rgba(255, 255, 255, 0.03));
  padding: 28px;
}
.close h2 { margin: 0; font-size: clamp(26px, 3vw, 36px); letter-spacing: -0.03em; }
footer { border-top: 1px solid var(--line); color: var(--muted); padding: 22px 0 48px; font-size: 13px; }
@media (max-width: 860px) {
  nav .quiet { display: none; }
  .hero, .gallery, .features, .steps, .price-grid { grid-template-columns: 1fr; }
  .hero { padding-top: 36px; gap: 28px; }
  .close { flex-direction: column; align-items: flex-start; }
}