/* ============================================
   0031 - GLASSMORPHISM 玻璃拟态未来风
   ============================================ */

:root {
  --glass-bg: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.25);
  --glass-shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
  --glass-blur: blur(16px);
  --gradient-1: #a855f7;
  --gradient-2: #6366f1;
  --gradient-3: #06b6d4;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: linear-gradient(135deg, #2e1065 0%, #1e1b4b 25%, #0f172a 50%, #042f2e 75%, #020617 100%);
  color: #e2e8f0;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Ambient background orbs */
body::before {
  content: '';
  position: fixed;
  top: -50%;
  left: -30%;
  width: 160%;
  height: 160%;
  background: radial-gradient(circle at 30% 20%, rgba(168,85,247,0.15) 0%, transparent 50%),
              radial-gradient(circle at 70% 60%, rgba(6,182,212,0.12) 0%, transparent 50%),
              radial-gradient(circle at 50% 80%, rgba(99,102,241,0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* ============ NAVBAR ============ */
.glass-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  padding: 0;
}

.glass-nav .container {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1.5rem; max-width: 1280px; margin: 0 auto;
}

.nav-logo {
  font-size: 1.5rem; font-weight: 800;
  background: linear-gradient(135deg, #c084fc, #22d3ee);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: 1px;
}

.nav-links { display: flex; gap: 2rem; list-style: none; align-items: center; }
.nav-links a {
  color: #cbd5e1; text-decoration: none; font-size: 0.95rem;
  font-weight: 500; transition: color 0.3s; position: relative;
}
.nav-links a::after {
  content: ''; position: absolute; bottom: -4px; left: 0; width: 0; height: 2px;
  background: linear-gradient(90deg, #c084fc, #22d3ee); transition: width 0.3s;
}
.nav-links a:hover { color: #fff; }
.nav-links a:hover::after { width: 100%; }

.nav-cta {
  background: rgba(255,255,255,0.15); border: 1px solid rgba(255,255,255,0.25);
  color: #fff; padding: 0.5rem 1.5rem; border-radius: 9999px;
  font-weight: 600; cursor: pointer; transition: all 0.3s; text-decoration: none; font-size: 0.9rem;
}
.nav-cta:hover { background: rgba(255,255,255,0.25); }

/* Hamburger */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; background: none; border: none; padding: 8px; }
.hamburger span { width: 24px; height: 2px; background: #e2e8f0; border-radius: 2px; transition: all 0.3s; }

/* ============ GLASS CARD ============ */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: 1.5rem;
  box-shadow: var(--glass-shadow);
  transition: all 0.4s ease;
}
.glass-card:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.4);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(31,38,135,0.25);
}

/* ============ HERO ============ */
.hero-section {
  position: relative; z-index: 1; padding: 8rem 1.5rem 5rem;
  text-align: center; min-height: 90vh; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
}
.hero-badge {
  display: inline-block; padding: 0.4rem 1.5rem;
  background: rgba(168,85,247,0.2); border: 1px solid rgba(168,85,247,0.4);
  border-radius: 9999px; font-size: 0.85rem; color: #c084fc;
  margin-bottom: 1.5rem; letter-spacing: 2px;
}
.hero-title {
  font-size: clamp(2.2rem, 6vw, 4rem); font-weight: 900;
  background: linear-gradient(135deg, #e9d5ff, #67e8f9, #c4b5fd);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text; line-height: 1.2; margin-bottom: 1.5rem; max-width: 800px;
}
.hero-subtitle {
  font-size: 1.15rem; color: #94a3b8; max-width: 650px; line-height: 1.8;
  margin-bottom: 2.5rem;
}
.hero-buttons { display: flex; gap: 1rem; flex-wrap: wrap; justify-content: center; }
.btn-glass-primary {
  padding: 0.85rem 2.5rem; border-radius: 9999px;
  background: linear-gradient(135deg, #a855f7, #6366f1);
  color: #fff; font-weight: 700; font-size: 1rem; border: none;
  cursor: pointer; text-decoration: none;
  box-shadow: 0 4px 20px rgba(168,85,247,0.4);
  transition: all 0.3s;
}
.btn-glass-primary:hover { box-shadow: 0 6px 30px rgba(168,85,247,0.6); transform: translateY(-2px); }
.btn-glass-outline {
  padding: 0.85rem 2.5rem; border-radius: 9999px;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.3);
  color: #e2e8f0; font-weight: 600; font-size: 1rem; cursor: pointer;
  text-decoration: none; transition: all 0.3s;
}
.btn-glass-outline:hover { background: rgba(255,255,255,0.18); }

/* Floating glass cards */
.hero-float-cards { display: flex; gap: 1rem; margin-top: 3rem; flex-wrap: wrap; justify-content: center; }
.hero-float-card {
  background: rgba(255,255,255,0.08); backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15); border-radius: 1rem;
  padding: 1rem 1.5rem; font-size: 0.85rem; color: #cbd5e1;
  animation: float 4s ease-in-out infinite; min-width: 130px; text-align: center;
}
.hero-float-card:nth-child(2) { animation-delay: 0.5s; }
.hero-float-card:nth-child(3) { animation-delay: 1s; }
.hero-float-card:nth-child(4) { animation-delay: 1.5s; }
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ============ FEATURES ============ */
.features-section { position: relative; z-index: 1; padding: 5rem 1.5rem; max-width: 1280px; margin: 0 auto; }
.section-label {
  text-align: center; font-size: 0.85rem; letter-spacing: 3px; color: #a78bfa;
  text-transform: uppercase; margin-bottom: 0.5rem;
}
.section-title {
  text-align: center; font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 800;
  margin-bottom: 3rem; color: #f1f5f9;
}
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.feature-card {
  background: rgba(255,255,255,0.06); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 1.5rem; padding: 2rem; text-align: center;
  transition: all 0.4s ease; position: relative; overflow: hidden;
}
.feature-card:nth-child(1) { border-top: 3px solid rgba(168,85,247,0.6); }
.feature-card:nth-child(2) { border-top: 3px solid rgba(6,182,212,0.6); }
.feature-card:nth-child(3) { border-top: 3px solid rgba(236,72,153,0.6); }
.feature-card:hover { border-color: rgba(255,255,255,0.4); background: rgba(255,255,255,0.14); transform: translateY(-6px); }
.feature-icon {
  font-size: 2.5rem; margin-bottom: 1rem; display: block;
}
.feature-card:nth-child(1) .feature-icon { color: #c084fc; }
.feature-card:nth-child(2) .feature-icon { color: #22d3ee; }
.feature-card:nth-child(3) .feature-icon { color: #f472b6; }
.feature-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: 0.75rem; color: #f1f5f9; }
.feature-card p { font-size: 0.9rem; color: #94a3b8; line-height: 1.7; }

/* ============ STATS ============ */
.stats-section { position: relative; z-index: 1; padding: 4rem 1.5rem; max-width: 1100px; margin: 0 auto; }
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.5rem;
}
.stat-item {
  background: rgba(255,255,255,0.06); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12); border-radius: 1.25rem;
  padding: 2rem 1rem; text-align: center; transition: all 0.3s;
}
.stat-item:hover { background: rgba(255,255,255,0.14); transform: translateY(-3px); }
.stat-number {
  font-size: 2.5rem; font-weight: 900;
  background: linear-gradient(135deg, #c084fc, #22d3ee);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.9rem; color: #94a3b8; margin-top: 0.5rem; }

/* ============ TESTIMONIALS ============ */
.testimonials-section { position: relative; z-index: 1; padding: 5rem 1.5rem; max-width: 1280px; margin: 0 auto; }
.testimonials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.testimonial-card {
  background: rgba(255,255,255,0.06); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12); border-radius: 1.5rem;
  padding: 2rem; transition: all 0.3s;
}
.testimonial-card:hover { background: rgba(255,255,255,0.14); border-color: rgba(255,255,255,0.3); }
.testimonial-stars { color: #fbbf24; margin-bottom: 1rem; font-size: 0.9rem; }
.testimonial-text { font-size: 0.95rem; color: #cbd5e1; line-height: 1.7; margin-bottom: 1.5rem; font-style: italic; }
.testimonial-author { display: flex; align-items: center; gap: 0.75rem; }
.testimonial-avatar { width: 44px; height: 44px; border-radius: 50%; object-fit: cover; border: 2px solid rgba(255,255,255,0.3); }
.testimonial-name { font-weight: 700; color: #f1f5f9; font-size: 0.95rem; }
.testimonial-role { font-size: 0.8rem; color: #94a3b8; }

/* ============ FAQ ============ */
.faq-section { position: relative; z-index: 1; padding: 5rem 1.5rem; max-width: 800px; margin: 0 auto; }
.faq-item {
  background: rgba(255,255,255,0.05); backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.1); border-radius: 1rem;
  margin-bottom: 0.75rem; overflow: hidden; transition: all 0.3s;
}
.faq-item:hover { border-color: rgba(255,255,255,0.25); }
.faq-question {
  padding: 1.25rem 1.5rem; cursor: pointer; display: flex;
  justify-content: space-between; align-items: center; font-weight: 600;
  color: #f1f5f9; font-size: 1rem; user-select: none;
}
.faq-question i { transition: transform 0.3s; color: #a78bfa; }
.faq-answer {
  max-height: 0; overflow: hidden; transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 1.5rem; font-size: 0.9rem; color: #94a3b8; line-height: 1.7;
}
.faq-item.open .faq-answer { max-height: 300px; padding: 0 1.5rem 1.25rem; }
.faq-item.open .faq-question i { transform: rotate(180deg); }

/* ============ CTA ============ */
.cta-section {
  position: relative; z-index: 1; text-align: center; padding: 5rem 1.5rem;
}
.cta-glass {
  display: inline-block; background: rgba(255,255,255,0.08);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.2); border-radius: 2rem;
  padding: 3rem 3rem; max-width: 700px;
}
.cta-title { font-size: 2rem; font-weight: 800; color: #f1f5f9; margin-bottom: 1rem; }
.cta-text { font-size: 1rem; color: #94a3b8; margin-bottom: 2rem; line-height: 1.7; }

/* ============ FOOTER ============ */
.glass-footer {
  position: relative; z-index: 1;
  background: rgba(15,23,42,0.5); backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(255,255,255,0.08); padding: 3rem 1.5rem 1.5rem;
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2rem; max-width: 1280px; margin: 0 auto; }
.footer-col h4 { color: #f1f5f9; font-weight: 700; margin-bottom: 1rem; font-size: 1rem; }
.footer-col p, .footer-col a { color: #94a3b8; font-size: 0.85rem; line-height: 1.8; text-decoration: none; display: block; }
.footer-col a:hover { color: #c084fc; }
.footer-bottom { text-align: center; color: #64748b; font-size: 0.8rem; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.06); max-width: 1280px; margin-left: auto; margin-right: auto; }

/* ============ ABOUT PAGE ============ */
.about-hero { position: relative; z-index: 1; padding: 8rem 1.5rem 4rem; text-align: center; }
.about-content { position: relative; z-index: 1; padding: 2rem 1.5rem 5rem; max-width: 900px; margin: 0 auto; }
.about-card {
  background: rgba(255,255,255,0.06); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12); border-radius: 1.5rem;
  padding: 2.5rem; margin-bottom: 2rem;
}
.about-card h2 { color: #f1f5f9; font-size: 1.5rem; font-weight: 700; margin-bottom: 1rem; }
.about-card p { color: #94a3b8; line-height: 1.8; font-size: 0.95rem; }
.about-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 2rem; }

/* ============ CONTACT PAGE ============ */
.contact-hero { position: relative; z-index: 1; padding: 8rem 1.5rem 3rem; text-align: center; }
.contact-content { position: relative; z-index: 1; padding: 2rem 1.5rem 5rem; max-width: 700px; margin: 0 auto; }
.contact-form-card {
  background: rgba(255,255,255,0.06); backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.12); border-radius: 1.5rem; padding: 2.5rem;
}
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; color: #cbd5e1; font-weight: 600; margin-bottom: 0.5rem; font-size: 0.9rem; }
.form-group input, .form-group textarea {
  width: 100%; padding: 0.85rem 1.2rem; border-radius: 0.75rem;
  background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.15);
  color: #f1f5f9; font-size: 0.95rem; outline: none; transition: border-color 0.3s;
}
.form-group input:focus, .form-group textarea:focus { border-color: #a78bfa; }
.form-group textarea { resize: vertical; min-height: 120px; }
.contact-info { display: grid; grid-template-columns: repeat(3,1fr); gap: 1.5rem; margin-top: 2.5rem; }
.contact-info-item {
  text-align: center; padding: 1.5rem;
  background: rgba(255,255,255,0.05); border-radius: 1rem;
  border: 1px solid rgba(255,255,255,0.1);
}
.contact-info-item i { font-size: 1.5rem; color: #a78bfa; margin-bottom: 0.5rem; }
.contact-info-item h4 { color: #f1f5f9; font-size: 0.9rem; font-weight: 600; }
.contact-info-item p { color: #94a3b8; font-size: 0.8rem; margin-top: 0.25rem; }

/* ============ RESPONSIVE ============ */
@media (max-width: 768px) {
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(15,23,42,0.95); backdrop-filter: blur(20px);
    flex-direction: column; padding: 1.5rem; gap: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
  }
  .nav-links.active { display: flex; }
  .hamburger { display: flex; }
  .features-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-info { grid-template-columns: 1fr; }
  .hero-float-cards { gap: 0.5rem; }
  .hero-float-card { min-width: 100px; padding: 0.75rem 1rem; font-size: 0.75rem; }
}

@media (max-width: 480px) {
  .hero-title { font-size: 1.8rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .cta-glass { padding: 2rem 1.5rem; }
}