@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Outfit:wght@600;700;800&display=swap');

:root {
  /* Morandi Slate Blue Theme */
  --bg-color: #5c6e7a;
  --bg-darker: #4a5a66;
  --text-main: #fcfdfe;
  --text-muted: #c8d6e5;
  --primary: #94b2c8;
  --secondary: #eef5f9; /* 微光色块 (bright glow) */
  --accent: #a3c2d1;
  
  --glass-bg: rgba(220, 235, 245, 0.15);
  --glass-hover: rgba(220, 235, 245, 0.25);
  --glass-border: 1px solid rgba(255, 255, 255, 0.2);
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  /* Soft gradient background */
  background: radial-gradient(circle at 50% 0%, var(--bg-darker) 0%, var(--bg-color) 100%);
  background-attachment: fixed;
  scroll-behavior: smooth;
}

#rippleCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -2;
  pointer-events: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  line-height: 1.2;
}

a {
  color: var(--secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #fff;
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 10;
}

section {
  padding: 100px 0;
  position: relative;
}

/* Glassmorphism utility */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--glass-border);
  border-radius: 30px; 
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), background 0.3s;
}

.glass:hover {
  background: var(--glass-hover);
  transform: scale(1.02);
}

/* Liquid Container for Metaballs effect */
.liquid-container {
  filter: url('#goo');
  -webkit-filter: url('#goo');
  position: relative;
}

/* Gradient Text */
.text-gradient {
  background: linear-gradient(135deg, var(--secondary), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 16px 36px;
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  text-align: center;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.btn-primary {
  background: var(--secondary);
  color: var(--bg-darker);
  border: none;
  box-shadow: 0 4px 20px rgba(238, 245, 249, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 8px 25px rgba(238, 245, 249, 0.6);
}

/* Navbar */
header {
  padding: 20px 0;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 100;
  background: rgba(92, 110, 122, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255,255,255,0.05);
}
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  font-family: 'Outfit', sans-serif;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-main);
  position: relative;
  z-index: 10;
}
.logo span {
  color: var(--accent);
}
.nav-links {
  display: flex;
  gap: 30px;
  align-items: center;
}
.nav-links a {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
}
.nav-links a:hover {
  color: var(--text-main);
}

/* Hero Section - 2 Columns */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: 80px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
}

/* Background floating liquid blobs */
.liquid-blob {
  position: absolute;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.4;
  z-index: -1;
  animation: float-blob 10s ease-in-out infinite alternate;
}
.blob-1 { width: 300px; height: 300px; top: 20%; left: 10%; animation-delay: 0s; }
.blob-2 { width: 400px; height: 400px; top: 30%; right: 10%; animation-delay: -3s; background: var(--accent); }
.blob-3 { width: 250px; height: 250px; bottom: 10%; left: 40%; animation-delay: -6s; }

@keyframes float-blob {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(50px, -50px) scale(1.1); }
  100% { transform: translate(-30px, 30px) scale(0.9); }
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 24px;
}
.hero p {
  font-size: 1.3rem;
  color: var(--text-muted);
  margin-bottom: 40px;
}
.hero-btns {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* Hero Right Side Dynamic Card */
.hero-visual {
  position: relative;
  width: 100%;
  height: 450px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.dynamic-card {
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 40px;
  backdrop-filter: blur(20px);
  box-shadow: 0 30px 60px rgba(0,0,0,0.2);
  position: relative;
  overflow: hidden;
  animation: float-card 6s ease-in-out infinite;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
@keyframes float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-20px); }
}
.card-blob {
  position: absolute;
  background: var(--secondary);
  border-radius: 50%;
  filter: blur(30px);
  opacity: 0.5;
  animation: orbit 8s linear infinite;
}
.cb-1 { width: 150px; height: 150px; top: 10%; left: 10%; transform-origin: 150px 150px; }
.cb-2 { width: 200px; height: 200px; bottom: -20%; right: -20%; transform-origin: -100px -100px; background: var(--primary); animation-duration: 12s; }

@keyframes orbit {
  100% { transform: rotate(360deg); }
}

.dynamic-card-content {
  position: relative;
  z-index: 2;
  text-align: center;
}
.dynamic-card-content h3 {
  font-size: 2.5rem;
  margin-bottom: 10px;
}
.dynamic-card-content p {
  font-size: 1.1rem;
  color: var(--text-muted);
}
.status-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 20px;
  background: rgba(0,0,0,0.2);
  padding: 8px 20px;
  border-radius: 50px;
}
.status-dot {
  width: 10px;
  height: 10px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 10px #10b981;
  animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* Features (Advantages) */
.section-title {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: 16px;
  color: var(--secondary);
}
.section-subtitle {
  text-align: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 60px;
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

/* Liquid navigation cards */
.feature-card {
  padding: 40px 30px;
  text-align: center;
  background: var(--glass-bg);
  border-radius: 40%; /* Liquid ball shape */
  aspect-ratio: 1; /* Make it a circle/blob */
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.05);
  animation: morphing 8s ease-in-out infinite;
  transition: all 0.4s ease;
  border: 1px solid rgba(255,255,255,0.1);
}

.feature-card:nth-child(1) { animation-delay: 0s; }
.feature-card:nth-child(2) { animation-delay: -2s; }
.feature-card:nth-child(3) { animation-delay: -4s; }

.feature-card:hover {
  transform: scale(1.05);
  background: rgba(255,255,255,0.15);
  border-radius: 30px;
}

@keyframes morphing {
  0% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
  34% { border-radius: 70% 30% 50% 50% / 30% 30% 70% 70%; }
  67% { border-radius: 100% 60% 60% 100% / 100% 100% 60% 60%; }
  100% { border-radius: 40% 60% 70% 30% / 40% 50% 60% 50%; }
}

.feature-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 16px auto;
  color: var(--secondary);
}
.feature-icon svg {
  width: 100%;
  height: 100%;
}
.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
  color: var(--text-main);
}
.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Streaming & AI Support */
.support-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.support-card {
  display: flex;
  align-items: center;
  padding: 40px;
  gap: 30px;
  border-radius: 30px;
}
.support-content h3 {
  font-size: 1.8rem;
  margin-bottom: 12px;
}
.support-content p {
  color: var(--text-muted);
  margin-bottom: 20px;
}
.tag-list {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.tag {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all 0.3s;
}
.tag:hover {
  background: var(--secondary);
  color: var(--bg-darker);
}

.support-visual {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: morphing 6s infinite alternate;
}
.support-visual svg {
  width: 60px;
  height: 60px;
  color: var(--secondary);
}

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: center;
}
.pricing-card {
  padding: 50px 30px;
  text-align: center;
  position: relative;
}
.pricing-card.popular {
  border-color: rgba(255, 255, 255, 0.4);
  transform: scale(1.05);
  box-shadow: 0 0 40px rgba(255, 255, 255, 0.1);
  background: rgba(220, 235, 245, 0.2);
}
.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--secondary);
  color: var(--bg-darker);
  padding: 6px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
}
.pricing-title {
  font-size: 1.4rem;
  margin-bottom: 20px;
}
.price {
  font-size: 3rem;
  font-family: 'Outfit', sans-serif;
  font-weight: 800;
  margin-bottom: 30px;
  display: flex;
  justify-content: center;
  align-items: baseline;
  color: var(--secondary);
}
.price span {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-left: 5px;
}
.pricing-features {
  list-style: none;
  margin-bottom: 40px;
}
.pricing-features li {
  margin-bottom: 16px;
  color: var(--text-muted);
}
.pricing-card .btn {
  width: 100%;
}
.pricing-card:not(.popular) .btn {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: none;
}
.pricing-card:not(.popular) .btn:hover {
  background: rgba(255, 255, 255, 0.2);
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}
.review-card {
  padding: 30px;
  border-radius: 20px;
}
.stars {
  color: #fbbf24;
  margin-bottom: 16px;
  font-size: 1.2rem;
}
.review-text {
  font-size: 1rem;
  margin-bottom: 24px;
  font-style: italic;
  color: var(--text-muted);
}
.user-info {
  display: flex;
  align-items: center;
  gap: 12px;
}
.avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}
.user-details h4 {
  font-size: 1rem;
  margin-bottom: 2px;
}
.user-details p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  margin-bottom: 20px;
  padding: 24px;
  border-radius: 20px;
}
.faq-item h4 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--secondary);
}
.faq-item p {
  color: var(--text-muted);
}

/* Footer */
footer {
  border-top: var(--glass-border);
  padding: 60px 0 30px 0;
  text-align: center;
  background: rgba(0, 0, 0, 0.1);
}
.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 40px;
}
.footer-links a {
  color: var(--text-muted);
  font-weight: 500;
}
.footer-links a:hover {
  color: var(--secondary);
}
.copyright {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.9rem;
}

/* Auxiliary Pages Content */
.page-header {
  padding: 150px 0 80px;
  text-align: center;
}
.page-header h1 {
  font-size: 3.5rem;
  margin-bottom: 16px;
}
.content-section {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 0;
}
.content-section h2 {
  font-size: 2rem;
  margin: 40px 0 20px;
  color: var(--secondary);
}
.content-section p, .content-section ul {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 1.1rem;
}
.content-section ul {
  padding-left: 20px;
}
.content-section li {
  margin-bottom: 10px;
}

/* Responsive Media Queries (Mobile First approach for overrides) */
@media (max-width: 992px) {
  .hero h1 { font-size: 3.5rem; }
  .features-grid, .reviews-grid, .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.popular { transform: scale(1); }
  .support-grid { grid-template-columns: 1fr; }
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-btns { justify-content: center; }
  .nav-links { display: none; /* Hide standard nav links on mobile for simplicity, or keep small */ }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 2.8rem; }
  .hero p { font-size: 1.1rem; }
  .features-grid, .reviews-grid, .pricing-grid { grid-template-columns: 1fr; }
  .feature-card { aspect-ratio: auto; padding: 40px 20px; border-radius: 30px; animation: none; }
  
  .support-card { flex-direction: column; text-align: center; }
  .tag-list { justify-content: center; }
  .footer-links { flex-direction: column; gap: 15px; }
  
  /* Touch friendly buttons */
  .btn {
    padding: 18px 40px;
    width: 100%;
    display: block;
    margin: 10px 0;
    font-size: 1.2rem;
  }
  
  .navbar { flex-direction: column; gap: 15px; }
  .nav-links { display: flex; flex-wrap: wrap; justify-content: center; gap: 15px; }
  .pricing-card.popular { transform: scale(1); }
  
  section { padding: 60px 0; }
  .section-title { font-size: 2.2rem; }
  .page-header h1 { font-size: 2.5rem; }
}