/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #0a0a0f;
  color: #e0e0e0;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }

/* ===== Nav ===== */
.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 0 64px; height: 72px;
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(20px);
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.logo { display: flex; align-items: center; gap: 10px; font-size: 20px; font-weight: 700; color: #fff; }
.logo-icon { font-size: 24px; color: #6c5ce7; }
.nav-links { display: flex; gap: 40px; font-size: 15px; color: #999; }
.nav-links a:hover { color: #fff; }

/* ===== Hero ===== */
.hero {
  position: relative; min-height: 100vh;
  display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 120px 24px 80px;
}
.hero-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 30%, rgba(108,92,231,0.12) 0%, transparent 60%),
              radial-gradient(ellipse 60% 50% at 80% 70%, rgba(0,206,201,0.08) 0%, transparent 50%);
}
.hero-content { position: relative; z-index: 1; max-width: 780px; }
.hero-tag { font-size: 14px; letter-spacing: 4px; color: #6c5ce7; text-transform: uppercase; margin-bottom: 20px; }
.hero h1 { font-size: 56px; font-weight: 800; color: #fff; line-height: 1.2; margin-bottom: 24px; }
.hero-desc { font-size: 18px; color: #888; line-height: 1.8; margin-bottom: 48px; }
.hero-cta { display: flex; gap: 16px; justify-content: center; }
.btn-primary, .btn-outline {
  padding: 14px 36px; border-radius: 8px; font-size: 16px; font-weight: 600;
  transition: all 0.25s;
}
.btn-primary { background: #6c5ce7; color: #fff; }
.btn-primary:hover { background: #5a4bd1; transform: translateY(-1px); box-shadow: 0 8px 32px rgba(108,92,231,0.35); }
.btn-outline { border: 1px solid rgba(255,255,255,0.2); color: #ccc; }
.btn-outline:hover { border-color: #6c5ce7; color: #fff; background: rgba(108,92,231,0.08); }

/* ===== Sections ===== */
.section { padding: 100px 64px; max-width: 1200px; margin: 0 auto; }
.section-header { text-align: center; margin-bottom: 64px; }
.section-header h2 { font-size: 36px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.section-header p { font-size: 16px; color: #777; }

/* ===== Products ===== */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.product-card {
  background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06);
  border-radius: 16px; padding: 40px 32px;
  transition: all 0.3s; display: block;
}
.product-card:hover { border-color: rgba(108,92,231,0.4); background: rgba(108,92,231,0.05); transform: translateY(-4px); }
.product-card.coming-soon { opacity: 0.6; }
.product-card.coming-soon:hover { opacity: 0.8; }
.card-icon { font-size: 40px; margin-bottom: 20px; }
.product-card h3 { font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 12px; }
.product-card p { font-size: 14px; color: #888; line-height: 1.7; margin-bottom: 20px; }
.card-link { font-size: 14px; color: #6c5ce7; font-weight: 600; }
.card-badge { font-size: 13px; color: #6c5ce7; border: 1px solid rgba(108,92,231,0.3); padding: 4px 12px; border-radius: 20px; }

/* ===== Tech ===== */
.tech { background: rgba(255,255,255,0.01); max-width: 100%; }
.tech-grid { max-width: 1200px; margin: 0 auto; display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; }
.tech-item { padding: 12px 0; }
.tech-num { font-size: 14px; color: #6c5ce7; font-weight: 700; margin-bottom: 12px; }
.tech-item h4 { font-size: 18px; font-weight: 600; color: #fff; margin-bottom: 8px; }
.tech-item p { font-size: 14px; color: #888; line-height: 1.6; }

/* ===== About ===== */
.about-content { display: grid; grid-template-columns: 1fr 280px; gap: 64px; align-items: start; }
.about-text p { font-size: 15px; color: #999; margin-bottom: 16px; line-height: 1.8; }
.about-stats { display: flex; flex-direction: column; gap: 24px; }
.stat { text-align: center; padding: 24px; background: rgba(255,255,255,0.03); border-radius: 12px; border: 1px solid rgba(255,255,255,0.06); }
.stat-num { display: block; font-size: 28px; font-weight: 800; color: #6c5ce7; margin-bottom: 4px; }
.stat-label { font-size: 13px; color: #777; }

/* ===== Contact ===== */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-item { text-align: center; padding: 36px 24px; background: rgba(255,255,255,0.03); border-radius: 12px; border: 1px solid rgba(255,255,255,0.06); }
.contact-icon { font-size: 28px; display: block; margin-bottom: 12px; }
.contact-item h4 { font-size: 16px; color: #fff; margin-bottom: 8px; }
.contact-item p { font-size: 14px; color: #888; }

/* ===== Footer ===== */
footer { border-top: 1px solid rgba(255,255,255,0.06); padding: 48px 64px 24px; }
.footer-content { max-width: 1200px; margin: 0 auto; display: flex; justify-content: space-between; align-items: flex-start; gap: 48px; margin-bottom: 32px; }
.footer-logo { font-size: 16px; font-weight: 700; color: #fff; display: block; margin-bottom: 8px; }
.footer-info { flex-shrink: 0; }
.footer-info p { font-size: 13px; color: #777; }
.footer-friends { display: flex; gap: 32px; flex-wrap: wrap; }
.friend-group { min-width: 120px; }
.friend-label { display: block; font-size: 12px; font-weight: 600; color: #555; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.friend-group a { display: inline-block; font-size: 13px; color: #888; margin-right: 10px; margin-bottom: 4px; line-height: 1.6; }
.friend-group a:hover { color: #a29bfe; }
.footer-nav { display: flex; flex-direction: column; gap: 8px; flex-shrink: 0; }
.footer-nav a { font-size: 14px; color: #888; }
.footer-nav a:hover { color: #fff; }
.footer-bottom { max-width: 1200px; margin: 0 auto; text-align: center; padding-top: 16px; border-top: 1px solid rgba(255,255,255,0.04); }
.footer-bottom p { font-size: 12px; color: #666; }
.footer-bottom a { color: #555; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav { padding: 0 24px; }
  .nav-links { display: none; }
  .section { padding: 64px 24px; }
  .hero h1 { font-size: 36px; }
  .hero-desc { font-size: 15px; }
  .product-grid, .tech-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-content { grid-template-columns: 1fr; }
  .footer-content { flex-direction: column; gap: 24px; }
}