/* ========================================
   0043 - HOLOGRAPHIC 全息幻彩风
   ======================================== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700;900&family=Poppins:wght@300;400;600;700&display=swap');

:root {
  --pearl: #faf8f5;
  --holo-pink: #ff6b9d;
  --holo-purple: #c44dff;
  --holo-blue: #4dc9f6;
  --holo-cyan: #00f5d4;
  --text-dark: #2d2d2d;
  --text-mid: #5a5a5a;
  --card-bg: rgba(255,255,255,0.85);
  --holographic: linear-gradient(135deg, #ff6b9d, #c44dff, #4dc9f6, #00f5d4, #ff6b9d);
  --holo-sheen: linear-gradient(135deg, rgba(255,107,157,0.15), rgba(196,77,255,0.15), rgba(77,201,246,0.15), rgba(0,245,212,0.15));
}

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

body {
  font-family: 'Noto Sans SC', 'Poppins', sans-serif;
  background: var(--pearl);
  color: var(--text-dark);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Holographic animated gradient border */
@keyframes hologram-spin {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes prism-float {
  0%, 100% { transform: translateY(0) rotate(0deg); opacity: 0.6; }
  50% { transform: translateY(-20px) rotate(5deg); opacity: 1; }
}

@keyframes sheen-shift {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes rainbow-text {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}
.navbar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--holographic);
  background-size: 300% 300%;
  animation: hologram-spin 4s ease infinite;
}
.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 1.5rem;
  font-weight: 900;
  background: var(--holographic);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: rainbow-text 3s linear infinite;
}
.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  text-decoration: none;
  color: var(--text-mid);
  font-weight: 500;
  font-size: 0.95rem;
  transition: all 0.3s;
  position: relative;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--holo-purple);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--holographic);
  background-size: 200% 200%;
  transition: width 0.3s;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-dark);
}
.mobile-menu {
  display: none;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
}
.mobile-menu.open {
  max-height: 400px;
}
.mobile-menu a {
  display: block;
  padding: 12px 24px;
  text-decoration: none;
  color: var(--text-mid);
  font-weight: 500;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

/* Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #faf8f5 0%, #f0ecf8 50%, #e8f4f8 100%);
  position: relative;
  overflow: hidden;
  padding-top: 72px;
}
.hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(196,77,255,0.08) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  animation: prism-float 8s ease-in-out infinite;
}
.hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,245,212,0.08) 0%, transparent 70%);
  bottom: -50px;
  left: -50px;
  animation: prism-float 8s ease-in-out infinite reverse;
}
.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: 0 24px;
}
.hero-badge {
  display: inline-block;
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  color: var(--holo-purple);
  background: rgba(196,77,255,0.08);
  border: 1px solid rgba(196,77,255,0.2);
  margin-bottom: 24px;
}
.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 24px;
  background: var(--holographic);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: rainbow-text 4s linear infinite;
}
.hero p {
  font-size: 1.15rem;
  color: var(--text-mid);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.8;
}
.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}
.btn-primary {
  padding: 14px 36px;
  border: none;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--holographic);
  background-size: 300% 300%;
  animation: hologram-spin 4s ease infinite;
  color: #fff;
  transition: all 0.3s;
  box-shadow: 0 4px 20px rgba(196,77,255,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(196,77,255,0.5);
}
.btn-outline {
  padding: 14px 36px;
  border-radius: 50px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: transparent;
  color: var(--text-dark);
  border: 2px solid transparent;
  background-image: linear-gradient(white, white), var(--holographic);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  transition: all 0.3s;
}
.btn-outline:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(77,201,246,0.2);
}

/* Section common */
.section {
  padding: 100px 24px;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  margin-bottom: 12px;
}
.section-header .subtitle {
  color: var(--text-mid);
  font-size: 1.05rem;
}
.container {
  max-width: 1200px;
  margin: 0 auto;
}

/* Features */
.features {
  background: #fff;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.feature-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 40px 28px;
  text-align: center;
  position: relative;
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.4s;
  overflow: hidden;
}
.feature-card::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: 18px;
  padding: 2px;
  background: var(--holographic);
  background-size: 300% 300%;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s;
  animation: hologram-spin 4s ease infinite;
}
.feature-card:hover::before {
  opacity: 1;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(196,77,255,0.12);
}
.feature-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  font-size: 1.8rem;
  background: var(--holo-sheen);
  background-size: 200% 200%;
  animation: sheen-shift 3s ease-in-out infinite;
  color: var(--holo-purple);
}
.feature-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 12px;
}
.feature-card p {
  color: var(--text-mid);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* Stats */
.stats {
  background: linear-gradient(135deg, #f8f6fa 0%, #f0f8fa 50%, #faf5f8 100%);
  position: relative;
  overflow: hidden;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}
.stat-item {
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  border-radius: 16px;
  padding: 36px 20px;
  border: 1px solid rgba(196,77,255,0.1);
  transition: all 0.3s;
}
.stat-item:hover {
  transform: translateY(-4px);
  border-color: rgba(196,77,255,0.3);
  box-shadow: 0 10px 30px rgba(196,77,255,0.1);
}
.stat-number {
  font-size: 3rem;
  font-weight: 900;
  background: var(--holographic);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label {
  color: var(--text-mid);
  font-size: 0.9rem;
  margin-top: 8px;
  font-weight: 500;
}

/* Testimonials */
.testimonials {
  background: #fff;
}
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.testimonial-card {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 36px 28px;
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}
.testimonial-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--holographic);
  background-size: 300% 300%;
  animation: hologram-spin 4s ease infinite;
  opacity: 0;
  transition: opacity 0.4s;
}
.testimonial-card:hover::after {
  opacity: 1;
}
.testimonial-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 40px rgba(196,77,255,0.08);
}
.testimonial-user {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}
.testimonial-user img {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid transparent;
  background-image: var(--holographic);
  background-size: 200%;
  background-origin: border-box;
  box-shadow: 0 0 0 2px var(--holographic);
  background-clip: padding-box;
}
.testimonial-user .name {
  font-weight: 700;
  font-size: 1rem;
}
.testimonial-user .role {
  color: var(--text-mid);
  font-size: 0.85rem;
}
.testimonial-stars {
  color: #f59e0b;
  margin-bottom: 12px;
  font-size: 0.9rem;
}
.testimonial-card p {
  color: var(--text-mid);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* FAQ */
.faq {
  background: linear-gradient(180deg, #faf8f5 0%, #f5f0fa 100%);
}
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}
.faq-item {
  background: rgba(255,255,255,0.8);
  border-radius: 12px;
  margin-bottom: 12px;
  border: 1px solid rgba(0,0,0,0.06);
  transition: all 0.3s;
  overflow: hidden;
}
.faq-item:hover {
  border-color: rgba(196,77,255,0.2);
}
.faq-question {
  padding: 20px 24px;
  font-weight: 700;
  font-size: 1.05rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}
.faq-question i {
  transition: transform 0.3s;
  color: var(--holo-purple);
}
.faq-item.open .faq-question i {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
  padding: 0 24px;
  color: var(--text-mid);
  line-height: 1.8;
  font-size: 0.95rem;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 24px 20px;
}

/* CTA */
.cta {
  background: linear-gradient(135deg, #2d1b4e 0%, #1a2a4a 50%, #0d2a2a 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255,107,157,0.15) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: prism-float 6s ease-in-out infinite;
}
.cta h2 {
  color: #fff;
  position: relative;
  z-index: 1;
}
.cta p {
  color: rgba(255,255,255,0.7);
  position: relative;
  z-index: 1;
}

/* Footer */
.footer {
  background: #1a1a2e;
  color: #fff;
  padding: 48px 24px 24px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-logo {
  font-size: 1.3rem;
  font-weight: 900;
  background: var(--holographic);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}
.footer-links a {
  color: rgba(255,255,255,0.6);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.3s;
}
.footer-links a:hover {
  color: var(--holo-purple);
}
.footer-social {
  display: flex;
  gap: 16px;
}
.footer-social a {
  color: rgba(255,255,255,0.5);
  font-size: 1.3rem;
  transition: color 0.3s;
}
.footer-social a:hover {
  color: var(--holo-pink);
}
.footer-bottom {
  text-align: center;
  color: rgba(255,255,255,0.3);
  font-size: 0.8rem;
  margin-top: 32px;
  padding-top: 20px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

/* About page */
.about-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #faf8f5 0%, #f0ecf8 100%);
  padding-top: 72px;
}
.about-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 900;
  text-align: center;
}
.about-content {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 24px;
}
.about-content h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin: 40px 0 16px;
}
.about-content p {
  color: var(--text-mid);
  line-height: 1.9;
  font-size: 1.05rem;
  margin-bottom: 16px;
}

/* Contact page */
.contact-hero {
  min-height: 50vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(180deg, #faf8f5 0%, #f0ecf8 100%);
  padding-top: 72px;
}
.contact-form-section {
  max-width: 700px;
  margin: 0 auto;
  padding: 60px 24px 100px;
}
.contact-form {
  background: #fff;
  border-radius: 20px;
  padding: 48px;
  border: 1px solid rgba(0,0,0,0.06);
  box-shadow: 0 10px 40px rgba(0,0,0,0.04);
}
.form-group {
  margin-bottom: 24px;
}
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.95rem;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 14px 18px;
  border: 2px solid #e8e5ef;
  border-radius: 12px;
  font-size: 1rem;
  font-family: inherit;
  transition: all 0.3s;
  outline: none;
  background: #faf9fc;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--holo-purple);
  box-shadow: 0 0 0 4px rgba(196,77,255,0.08);
  background: #fff;
}
.form-group textarea {
  min-height: 140px;
  resize: vertical;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .menu-btn { display: block; }
  .mobile-menu { display: block; }
  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
  .section { padding: 60px 16px; }
  .contact-form { padding: 28px; }
  .footer-inner { flex-direction: column; text-align: center; }
}