@charset "UTF-8";

:root {
  --bg-color: #030712;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-hover: #0284c7;
  --glass-bg: transparent; /* 大部分背景透明 */
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* 光影透射效果 (Light Projection) */
body::before, body::after {
  content: '';
  position: absolute;
  width: 700px;
  height: 700px;
  filter: blur(150px);
  z-index: -1;
  pointer-events: none;
  border-radius: 50%;
}

body::before {
  top: -10%;
  left: -20%;
  background: rgba(2, 132, 199, 0.2);
  animation: floatGlow 15s ease-in-out infinite alternate;
}

body::after {
  top: 40%;
  right: -20%;
  background: rgba(56, 189, 248, 0.15);
  animation: floatGlow 18s ease-in-out infinite alternate-reverse;
}

@keyframes floatGlow {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(100px, 100px) scale(1.1); }
}

/* 品牌相关动效：雪橇滑动与浮动 */
@keyframes sledFloat {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(2deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes cloudDrift {
  0% { transform: translateX(-5px); opacity: 0.5; }
  50% { transform: translateX(10px); opacity: 0.8; }
  100% { transform: translateX(-5px); opacity: 0.5; }
}

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

a:hover {
  color: var(--text-main);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Typography */
h1, h2, h3 {
  font-weight: 700;
  line-height: 1.2;
}

.title-gradient {
  background: linear-gradient(135deg, #fff 0%, #38bdf8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Header & Nav */
header {
  padding: 30px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: 1px;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent) 0%, #818cf8 100%);
  border-radius: 8px;
  display: inline-block;
  position: relative;
  overflow: hidden;
}

.logo-icon::after {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 50%; height: 100%;
  background: linear-gradient(to right, transparent, rgba(255,255,255,0.8), transparent);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% { left: -100%; }
  20% { left: 200%; }
  100% { left: 200%; }
}

nav ul {
  display: flex;
  gap: 30px;
  list-style: none;
}

nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 16px;
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--accent-hover);
}

.header-actions {
  display: flex;
  gap: 15px;
  align-items: center;
}

/* Hero Section (Left-Right Layout) */
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 50px;
  padding: 100px 0 80px;
  position: relative;
}

.hero-content {
  flex: 1;
}

.hero-content h1 {
  font-size: 56px;
  margin-bottom: 24px;
}

.hero-content p {
  font-size: 20px;
  color: var(--text-muted);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

/* Dynamic Visual Card (Right Side) */
.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.dynamic-card {
  width: 100%;
  max-width: 450px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 30px;
  padding: 40px;
  box-shadow: 0 0 50px rgba(2, 132, 199, 0.2);
  animation: sledFloat 6s ease-in-out infinite;
  position: relative;
  overflow: hidden;
}

.dynamic-card::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: conic-gradient(from 0deg, transparent, rgba(56, 189, 248, 0.2), transparent 30%);
  animation: rotateGlow 8s linear infinite;
  z-index: -1;
}

@keyframes rotateGlow {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.card-brand-element {
  text-align: center;
}

.card-brand-element .icon {
  font-size: 60px;
  margin-bottom: 20px;
  display: inline-block;
  animation: cloudDrift 4s ease-in-out infinite alternate;
}

.card-brand-element h3 {
  font-size: 28px;
  color: #fff;
  margin-bottom: 10px;
}

.card-brand-element p {
  color: var(--text-muted);
  font-size: 16px;
}


.btn {
  display: inline-block;
  padding: 16px 40px;
  font-size: 18px;
  font-weight: 600;
  border-radius: 50px;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  color: #fff !important;
  box-shadow: 0 4px 20px rgba(2, 132, 199, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(2, 132, 199, 0.6);
  color: #fff !important;
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
}
.btn-outline:hover {
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent) !important;
}

/* Sections */
section {
  padding: 80px 0;
}

.section-title {
  text-align: center;
  font-size: 36px;
  margin-bottom: 50px;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.card {
  background: var(--glass-bg); /* 透明 */
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 20px;
  padding: 40px 30px;
  text-align: center;
  transition: transform 0.3s ease, background 0.3s ease, border-color 0.3s ease;
  position: relative;
}

.card:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(56, 189, 248, 0.5);
  box-shadow: 0 10px 30px rgba(2, 132, 199, 0.15);
}

.card-icon {
  font-size: 48px;
  margin-bottom: 20px;
}

.card h3 {
  font-size: 24px;
  margin-bottom: 15px;
}

.card p {
  color: var(--text-muted);
  font-size: 16px;
}

/* Streaming & AI Support */
.ai-streaming-card {
  background: var(--glass-bg); /* 透明 */
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 60px;
  display: flex;
  align-items: center;
  gap: 50px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.ai-streaming-content {
  flex: 1;
}

.ai-streaming-content h3 {
  font-size: 32px;
  margin-bottom: 20px;
}

.ai-streaming-content p {
  color: var(--text-muted);
  font-size: 18px;
  margin-bottom: 30px;
}

.ai-streaming-visual {
  flex: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: center;
}

.logo-badge {
  background: transparent;
  backdrop-filter: blur(5px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 15px 25px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 18px;
  color: #fff;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.logo-badge:hover { 
  transform: scale(1.05); 
  box-shadow: 0 0 20px rgba(255,255,255,0.1);
}

.badge-chatgpt { color: #10a37f; border-color: rgba(16, 163, 127, 0.4); }
.badge-netflix { color: #e50914; border-color: rgba(229, 9, 20, 0.4); }
.badge-disney { color: #113ccf; border-color: rgba(17, 60, 207, 0.4); }
.badge-youtube { color: #ff0000; border-color: rgba(255, 0, 0, 0.4); }

/* Pricing */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  align-items: center;
}

.pricing-card {
  background: var(--glass-bg); /* 透明 */
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: 20px;
  padding: 40px 30px;
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card.popular {
  background: rgba(56, 189, 248, 0.03);
  border-color: rgba(56, 189, 248, 0.4);
  transform: scale(1.05);
  box-shadow: 0 10px 50px rgba(2, 132, 199, 0.25);
}

.popular-badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #38bdf8 0%, #0284c7 100%);
  color: #fff;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(2, 132, 199, 0.4);
}

.pricing-card h3 {
  font-size: 24px;
  margin-bottom: 10px;
}

.price {
  font-size: 48px;
  font-weight: 700;
  margin-bottom: 20px;
  color: #fff;
}

.price span {
  font-size: 16px;
  color: var(--text-muted);
  font-weight: 400;
}

.pricing-features {
  list-style: none;
  margin-bottom: 30px;
  text-align: left;
}

.pricing-features li {
  margin-bottom: 15px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 10px;
}

.pricing-features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: bold;
}

.pricing-card .btn {
  display: block;
  width: 100%;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--glass-bg); /* 透明 */
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 12px;
  padding: 25px;
  margin-bottom: 20px;
}

.faq-item h4 {
  font-size: 20px;
  margin-bottom: 10px;
  color: #fff;
}

.faq-item p {
  color: var(--text-muted);
}

/* Reviews */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.review-card {
  background: var(--glass-bg); /* 透明 */
  backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: 16px;
  padding: 30px;
}

.review-text {
  font-style: italic;
  color: var(--text-main);
  margin-bottom: 20px;
  font-size: 16px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 15px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  color: #fff;
}

.author-info h5 {
  color: #fff;
  font-size: 16px;
}

.author-info span {
  color: var(--text-muted);
  font-size: 14px;
}

/* Footer */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
  margin-top: 60px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 16px;
}
.footer-links a:hover {
  color: var(--accent);
}

.copyright {
  color: var(--text-muted);
  font-size: 14px;
}

/* Subpages Container */
.page-content {
  padding: 60px 0;
  max-width: 800px;
  margin: 0 auto;
}

.page-content h1 {
  font-size: 40px;
  margin-bottom: 40px;
  text-align: center;
}

.page-content h2 {
  font-size: 24px;
  margin-top: 40px;
  margin-bottom: 20px;
  color: var(--accent);
}

.page-content p {
  color: var(--text-muted);
  margin-bottom: 20px;
  font-size: 16px;
}

.page-content ul {
  color: var(--text-muted);
  margin-bottom: 20px;
  padding-left: 20px;
}

.page-content li {
  margin-bottom: 10px;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    gap: 40px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-content h1 { font-size: 48px; }
  
  nav { display: none; } /* Hide nav on tablet/mobile for simplicity, or use a hamburger. For now hiding. */
  
  .features-grid, .pricing-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ai-streaming-card {
    flex-direction: column;
    text-align: center;
    padding: 40px 20px;
  }
  .pricing-card.popular {
    transform: none;
  }
}

@media (max-width: 768px) {
  .hero-content h1 { font-size: 36px; }
  .hero-content p { font-size: 16px; padding: 0 10px; }
  .btn { width: 100%; max-width: 300px; padding: 18px 20px; } 
  
  .features-grid, .pricing-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  
  header { padding: 20px 0; flex-direction: column; gap: 20px; }
  .header-actions { flex-direction: column; width: 100%; }
  .header-actions .btn { max-width: 100%; }
  
  .section-title { font-size: 28px; margin-bottom: 30px; }
  
  .footer-links {
    flex-direction: column;
    gap: 15px;
  }
}