:root {
  --bg: #0f0f14;
  --text: #f4f6fa;
  --muted: #a7b0be;
  --primary: #ff7ab6;
  --primary-2: #7c8cff;
  --card: #161823;
  --border: #252a3a;
  --accent: #ffd36a;
}
* { box-sizing: border-box }
html { scroll-behavior: smooth }
body {
  margin: 0;
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%, rgba(255,122,182,0.16), transparent 60%),
              radial-gradient(900px 500px at 90% 10%, rgba(124,140,255,0.18), transparent 60%),
              var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Heiti SC", Arial, sans-serif;
  line-height: 1.6;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px }
.site-header {
  position: sticky; top: 0;
  backdrop-filter: saturate(140%) blur(10px);
  background: rgba(15,15,20,0.7);
  border-bottom: 1px solid var(--border);
  z-index: 20;
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 64px }
.brand { font-weight: 700; font-size: 18px; letter-spacing: 0.2px }
.nav { display: flex; gap: 18px }
.nav a { color: var(--text); text-decoration: none; padding: 8px 10px; border-radius: 8px }
.nav a:hover { background: rgba(255,255,255,0.06) }
.nav a.highlight { color: var(--bg); background: linear-gradient(135deg, var(--primary), var(--primary-2)) }
.nav-toggle {
  display: none; color: var(--text); background: none;
  border: 1px solid var(--border); border-radius: 8px; height: 36px; padding: 0 12px
}
.hero { padding: 72px 0 48px }
.hero-inner { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 24px; align-items: center }
.hero-text h1 { margin: 0 0 12px; font-size: 36px }
.hero-text p { color: var(--muted); margin: 0 0 18px }
.sub-note { margin-top: 8px; color: var(--muted); font-size: 14px }
.btn {
  display: inline-block; border: 1px solid var(--border); color: var(--text);
  background: rgba(255,255,255,0.04); padding: 10px 14px; border-radius: 10px;
  text-decoration: none; margin-right: 10px
}
.btn.primary { border: none; color: var(--bg); background: linear-gradient(135deg, var(--primary), var(--primary-2)) }
.btn:hover { filter: brightness(1.08) }
.hero-visual { display: grid; place-items: center }
.badge-spark {
  width: 280px; height: 280px; border-radius: 24px;
  background:
    radial-gradient(circle at 30% 40%, rgba(255,211,106,0.24) 0, rgba(255,211,106,0.1) 35%, transparent 60%),
    radial-gradient(circle at 70% 60%, rgba(124,140,255,0.24) 0, rgba(124,140,255,0.12) 35%, transparent 60%),
    linear-gradient(135deg, rgba(255,122,182,0.28), rgba(124,140,255,0.28));
  box-shadow: inset 0 0 24px rgba(255,211,106,0.18), 0 20px 60px rgba(0,0,0,0.35);
}
.section { padding: 54px 0 }
.section.alt { background: rgba(255,255,255,0.03); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border) }
.section h2 { margin: 0 0 8px; font-size: 28px }
.section-desc { color: var(--muted); margin: 0 0 22px }
.cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px }
.card h3 { margin: 0 0 6px; font-size: 18px }
.card p { margin: 0; color: var(--muted) }
.grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px }
.grid-item { background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 18px }
.badges { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px }
.badge { background: linear-gradient(135deg, rgba(255,122,182,0.16), rgba(124,140,255,0.16)); border: 1px solid var(--border); border-radius: 14px; padding: 16px }
.badge-title { font-weight: 600; margin-bottom: 6px }
.badge-desc { color: var(--muted) }
.contact { background: rgba(255,255,255,0.03); border-top: 1px solid var(--border) }
.contact-inner { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 16px; align-items: center }
.contact-info .tel { color: var(--accent); text-decoration: none }
.site-footer { border-top: 1px solid var(--border); padding: 22px 0 }
.footer-inner { display: flex; align-items: center; justify-content: space-between; color: var(--muted) }
.footer-inner a { color: var(--muted); text-decoration: none }
.footer-inner a:hover { text-decoration: underline }
.contact-bar {
  position: fixed; bottom: 14px; right: 14px;
  background: linear-gradient(135deg, var(--primary), var(--primary-2));
  color: var(--bg); padding: 10px 14px; border-radius: 999px;
  box-shadow: 0 12px 24px rgba(0,0,0,0.25); z-index: 30
}
.contact-bar a { color: var(--bg); text-decoration: none; font-weight: 600 }
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr }
  .cards, .grid, .badges { grid-template-columns: 1fr 1fr }
  .contact-inner { grid-template-columns: 1fr }
}
@media (max-width: 640px) {
  .nav-toggle { display: inline-block }
  .nav { display: none }
  .nav.open {
    display: grid; position: absolute; top: 64px; right: 20px;
    background: rgba(22,24,35,0.95); border: 1px solid var(--border);
    border-radius: 12px; padding: 10px
  }
  .cards, .grid, .badges { grid-template-columns: 1fr }
  .badge-spark { width: 220px; height: 220px }
  .hero-text h1 { font-size: 28px }
}