/* ========================================
   TopEmby - Clean Dark Theme CSS
   ======================================== */

/* CSS Variables */
:root {
  --bg-primary: #050505;
  --bg-secondary: #0f0f0f;
  --bg-elevated: #1a1a1a;
  --bg-glass: rgba(15, 15, 15, 0.9);
  --bg-card: rgba(20, 20, 20, 0.6);
  --brand-red: #E50914;
  --brand-red-hover: #f40612;
  --brand-red-glow: rgba(229, 9, 20, 0.5);
  --brand-red-subtle: rgba(229, 9, 20, 0.15);
  --text-primary: #ffffff;
  --text-secondary: #a3a3a3;
  --text-muted: #6b6b6b;
  --accent-gold: #fbbf24;
  --success-green: #22c55e;
  --gradient-hero: linear-gradient(180deg, #0a0a0c 0%, #121218 50%, #050505 100%);
  --gradient-card: linear-gradient(145deg, rgba(30,30,30,0.8) 0%, rgba(15,15,15,0.9) 100%);
  --gradient-red: linear-gradient(135deg, #e62e4c 0%, #b80810 100%);
  --glow-red: 0 0 60px var(--brand-red-glow);
  --glow-card: 0 20px 50px rgba(0, 0, 0, 0.5);
  --glass-border: 1px solid rgba(255, 255, 255, 0.08);
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --font-sans: "Noto Sans SC", -apple-system, sans-serif;
  --font-serif: "Noto Serif SC", serif;
  --container-max: 1200px;
  --container-padding: 24px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-smooth: 0.5s ease;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
}

/* Reset */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body { font-family: var(--font-sans); background-color: var(--bg-primary); color: var(--text-primary); line-height: 1.6; -webkit-font-smoothing: antialiased; overflow-x: hidden; }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 700; line-height: 1.2; color: var(--text-primary); }
h1 { font-size: 3.5rem; } h2 { font-size: 2.5rem; } h3 { font-size: 1.75rem; } h4 { font-size: 1.25rem; }
p { color: var(--text-secondary); line-height: 1.7; }
a { color: inherit; text-decoration: none; }
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--container-padding); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-sm); padding: 14px 32px; font-family: var(--font-sans); font-size: 1rem; font-weight: 600; border-radius: var(--radius-md); border: none; cursor: pointer; transition: all var(--transition-normal); text-decoration: none; }
.btn-primary { background: var(--brand-red); color: var(--text-primary); box-shadow: 0 4px 20px rgba(229, 9, 20, 0.3); }
.btn-primary:hover { background: var(--brand-red-hover); transform: translateY(-3px); box-shadow: 0 0 40px rgba(229, 9, 20, 0.6), 0 10px 30px rgba(229, 9, 20, 0.3); }
.btn-secondary { background: transparent; color: var(--text-primary); border: 1px solid rgba(255, 255, 255, 0.2); }
.btn-secondary:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.4); }

/* Navigation */
.nav { position: fixed; top: 0; left: 0; right: 0; height: 72px; background: linear-gradient(180deg, rgba(5,5,5,0.95) 0%, rgba(5,5,5,0.8) 60%, transparent 100%); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); z-index: 1000; display: flex; align-items: center; justify-content: space-between; padding: 0 var(--space-xl); transition: all var(--transition-normal); }
.nav.scrolled { background: var(--bg-glass); border-bottom: 1px solid rgba(229, 9, 20, 0.2); height: 64px; box-shadow: 0 4px 30px rgba(229, 9, 20, 0.1); }
.nav-logo { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 700; color: var(--text-primary); letter-spacing: 2px; }
.nav-menu { display: flex; align-items: center; gap: 40px; }
.nav-link { color: rgba(255,255,255,0.7); font-size: 0.95rem; font-weight: 500; transition: all var(--transition-fast); padding: 8px 0; position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: 0; left: 50%; transform: translateX(-50%); width: 0; height: 2px; background: var(--gradient-red); transition: width var(--transition-normal); }
.nav-link:hover, .nav-link.active { color: var(--text-primary); }
.nav-link:hover::after, .nav-link.active::after { width: 100%; }
.nav-hamburger { display: none; flex-direction: column; justify-content: center; align-items: center; gap: 6px; width: 44px; height: 44px; background: transparent; border: none; cursor: pointer; padding: 10px; }
.nav-hamburger span { display: block; width: 24px; height: 2px; background: var(--text-primary); transition: all 0.3s ease; }
.nav-hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 6px); }
.nav-hamburger.active span:nth-child(2) { opacity: 0; }
.nav-hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -6px); }

/* Hero Section */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 120px var(--space-lg) var(--space-3xl); overflow: hidden; }
.hero-bg { position: absolute; inset: 0; background: var(--gradient-hero); z-index: 0; }
.hero-bg::before { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(229, 9, 20, 0.25) 0%, transparent 60%), radial-gradient(ellipse 60% 40% at 80% 60%, rgba(229, 9, 20, 0.15) 0%, transparent 50%), radial-gradient(circle at 20% 80%, rgba(229, 9, 20, 0.1) 0%, transparent 40%); }
.hero-bg::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 300px; background: linear-gradient(to top, var(--bg-primary) 0%, transparent 100%); }
.hero-particles { position: absolute; inset: 0; overflow: hidden; z-index: 1; pointer-events: none; }
.particle { position: absolute; width: 4px; height: 4px; background: rgba(229, 9, 20, 0.6); border-radius: 50%; animation: float-particle 15s infinite; }
.particle:nth-child(1) { left: 10%; animation-delay: 0s; animation-duration: 12s; }
.particle:nth-child(2) { left: 20%; animation-delay: 2s; animation-duration: 18s; width: 6px; height: 6px; }
.particle:nth-child(3) { left: 30%; animation-delay: 4s; animation-duration: 14s; }
.particle:nth-child(4) { left: 40%; animation-delay: 1s; animation-duration: 16s; width: 3px; height: 3px; }
.particle:nth-child(5) { left: 50%; animation-delay: 3s; animation-duration: 20s; width: 5px; height: 5px; }
.particle:nth-child(6) { left: 60%; animation-delay: 5s; animation-duration: 13s; }
.particle:nth-child(7) { left: 70%; animation-delay: 2.5s; animation-duration: 17s; }
.particle:nth-child(8) { left: 80%; animation-delay: 4.5s; animation-duration: 15s; }
.particle:nth-child(9) { left: 90%; animation-delay: 1.5s; animation-duration: 19s; width: 3px; height: 3px; }
.particle:nth-child(10) { left: 15%; animation-delay: 6s; animation-duration: 14s; background: rgba(255,255,255,0.3); }
.particle:nth-child(11) { left: 35%; animation-delay: 7s; animation-duration: 16s; background: rgba(255,255,255,0.2); width: 2px; height: 2px; }
.particle:nth-child(12) { left: 55%; animation-delay: 8s; animation-duration: 12s; background: rgba(255,255,255,0.25); }
@keyframes float-particle { 0% { transform: translateY(100vh) scale(0); opacity: 0; } 10% { opacity: 1; transform: translateY(80vh) scale(1); } 100% { transform: translateY(-10vh) scale(0.5); opacity: 0; } }
.hero-grid { position: absolute; inset: 0; background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px); background-size: 60px 60px; animation: gridMove 20s linear infinite; opacity: 0.5; }
@keyframes gridMove { 0% { transform: translate(0, 0); } 100% { transform: translate(60px, 60px); } }
.hero-content { position: relative; z-index: 1; text-align: center; max-width: 800px; padding: var(--space-xl); }
.hero-slogan { display: inline-block; font-size: 1rem; color: var(--brand-red); font-weight: 700; letter-spacing: 4px; text-transform: uppercase; margin-bottom: var(--space-xl); padding: 10px 24px; background: linear-gradient(135deg, rgba(229,9,20,0.3) 0%, rgba(229,9,20,0.1) 100%); border-radius: var(--radius-full); border: 1px solid rgba(229, 9, 20, 0.5); box-shadow: 0 0 30px rgba(229, 9, 20, 0.3); animation: pulse-slogan 2s ease-in-out infinite; }
@keyframes pulse-slogan { 0%, 100% { box-shadow: 0 0 30px rgba(229, 9, 20, 0.3); } 50% { box-shadow: 0 0 50px rgba(229, 9, 20, 0.5); } }
.hero-title { font-size: 3.5rem; margin-bottom: var(--space-lg); background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 50%, #ffffff 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; filter: drop-shadow(0 0 20px rgba(229, 9, 20, 0.3)); animation: titleShine 3s ease-in-out infinite; }
@keyframes titleShine { 0%, 100% { filter: drop-shadow(0 0 20px rgba(229, 9, 20, 0.3)); } 50% { filter: drop-shadow(0 0 40px rgba(229, 9, 20, 0.6)); } }
.hero-title span { background: linear-gradient(135deg, #ff6b6b 0%, #e62e4c 50%, #b80810 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; font-weight: 700; animation: spanGlow 2s ease-in-out infinite; }
@keyframes spanGlow { 0%, 100% { filter: drop-shadow(0 0 10px rgba(229, 9, 20, 0.5)); } 50% { filter: drop-shadow(0 0 30px rgba(229, 9, 20, 0.8)); } }
.hero-subtitle { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: var(--space-xl); font-weight: 500; letter-spacing: 2px; }
.hero-slogan { display: inline-block; font-size: 0.875rem; color: var(--brand-red); font-weight: 600; letter-spacing: 4px; text-transform: uppercase; margin-bottom: var(--space-xl); padding: 8px 20px; background: var(--brand-red-subtle); border-radius: var(--radius-full); border: 1px solid rgba(229, 9, 20, 0.3); }
.hero-title { font-size: 3.5rem; margin-bottom: var(--space-lg); text-shadow: 0 0 40px rgba(229, 9, 20, 0.3), 0 0 80px rgba(229, 9, 20, 0.15); }
.hero-title span { color: var(--brand-red); text-shadow: 0 0 30px var(--brand-red-glow); }
.hero-title span { color: var(--brand-red); }
.hero-subtitle { font-size: 1.5rem; color: var(--text-secondary); margin-bottom: var(--space-xl); }
.hero-devices { display: flex; justify-content: center; gap: var(--space-lg); flex-wrap: wrap; margin-bottom: var(--space-xl); }
.hero-devices span { display: flex; align-items: center; gap: 8px; font-size: 1rem; color: var(--text-secondary); }
.hero-devices span::before { content: '✦'; color: var(--brand-red); font-size: 0.75rem; }
.hero-cta { margin-top: var(--space-xl); }
.hero-cta .btn { padding: 18px 48px; font-size: 1.125rem; }

/* Video Demo Section */
.video-section { padding: var(--space-4xl) 0; background: var(--bg-primary); position: relative; }
.video-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent 0%, rgba(229, 9, 20, 0.3) 50%, transparent 100%); }
.section-title { font-size: 2.5rem; text-align: center; margin-bottom: var(--space-3xl); position: relative; text-shadow: 0 0 30px rgba(229, 9, 20, 0.2); }
.section-title::after { content: ''; display: block; width: 60px; height: 3px; background: var(--gradient-red); margin: var(--space-md) auto 0; border-radius: var(--radius-full); }
.video-section p { text-align: center; margin-bottom: var(--space-2xl); }
/* 统计数据区域 - 高级横向排版 */
.stats-container {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 0;
  margin-bottom: var(--space-2xl);
  background: rgba(20, 20, 20, 0.6);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(10px);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.stat-item {
  flex: 1;
  text-align: center;
  padding: var(--space-lg) var(--space-xl);
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 60%;
  width: 1px;
  background: linear-gradient(to bottom, transparent, rgba(255,255,255,0.1), transparent);
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-value.movies { background: linear-gradient(135deg, #ff6b6b 0%, #e62e4c 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-value.tv { background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
.stat-value.episodes { background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.stat-label { color: var(--text-muted); font-size: 0.875rem; text-transform: uppercase; letter-spacing: 2px; margin-top: var(--space-sm); }

/* 响应式 */
@media (max-width: 768px) {
  .stats-container { flex-direction: column; gap: var(--space-md); }
  .stat-item:not(:last-child)::after { display: none; }
  .stat-item { padding: var(--space-md); }
  .stat-value { font-size: 2rem; }
}

.video-container { max-width: 900px; margin: 0 auto; background: var(--bg-secondary); border-radius: var(--radius-xl); padding: 8px; border: 1px solid rgba(229, 9, 20, 0.2); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(229, 9, 20, 0.1); }

/* 响应式 */
@media (max-width: 768px) {
  .stats-container { flex-direction: column; gap: var(--space-md); }
  .stat-item:not(:last-child)::after { display: none; }
  .stat-item { padding: var(--space-md); }
  .stat-value { font-size: 2rem; }
}
.video-container { max-width: 900px; margin: 0 auto; background: var(--bg-secondary); border-radius: var(--radius-xl); padding: 8px; border: 1px solid rgba(229, 9, 20, 0.2); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(229, 9, 20, 0.1); }
.video-container video { width: 100%; border-radius: var(--radius-lg); display: block; }

/* Pain Points Section */
.pain-section { padding: var(--space-4xl) 0; background: var(--bg-secondary); position: relative; }
.pain-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent 0%, rgba(229, 9, 20, 0.2) 50%, transparent 100%); }
.pain-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.card-pain { background: var(--gradient-card); border-radius: var(--radius-xl); padding: var(--space-2xl); text-align: center; border: var(--glass-border); transition: all var(--transition-smooth); position: relative; overflow: hidden; }
.card-pain::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: var(--gradient-red); transform: scaleX(0); transform-origin: left; transition: transform var(--transition-smooth); }
.card-pain:hover { transform: translateY(-8px); border-color: rgba(229, 9, 20, 0.5); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 40px rgba(229, 9, 20, 0.25); }
.card-pain:hover::before { transform: scaleX(1); }
.card-pain-icon { width: 80px; height: 80px; margin: 0 auto var(--space-lg); background: var(--brand-red-subtle); border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 2.5rem; color: var(--brand-red); transition: all var(--transition-normal); }
.card-pain:hover .card-pain-icon { background: rgba(229, 9, 20, 0.25); transform: scale(1.1); box-shadow: 0 0 30px rgba(229, 9, 20, 0.4); }
.card-pain h3 { font-family: var(--font-serif); font-size: 1.375rem; margin-bottom: var(--space-md); }
.card-pain p { font-size: 1rem; line-height: 1.8; }

/* Service Plans Section */
.plans-section { padding: var(--space-4xl) 0; background: var(--bg-primary); }
.plan-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); max-width: 900px; margin: 0 auto; }
.card-plan { background: var(--gradient-card); border-radius: var(--radius-xl); padding: var(--space-2xl); border: var(--glass-border); transition: all var(--transition-smooth); position: relative; }
.card-plan:hover { transform: translateY(-8px); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5), 0 0 30px rgba(229, 9, 20, 0.15); }
.card-plan.featured { border: 2px solid var(--brand-red); background: linear-gradient(145deg, rgba(30,30,30,0.9) 0%, rgba(15,15,15,0.95) 100%); }
.card-plan.featured::before { content: '推荐'; position: absolute; top: 20px; right: -35px; background: var(--brand-red); color: white; padding: 6px 40px; font-size: 0.75rem; font-weight: 700; transform: rotate(45deg); letter-spacing: 1px; }
.plan-header { text-align: center; padding-bottom: var(--space-xl); border-bottom: 1px solid rgba(255, 255, 255, 0.1); margin-bottom: var(--space-xl); }
.plan-name { font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: var(--space-md); }
.plan-price { font-size: 3rem; font-weight: 700; color: var(--text-primary); }
.plan-price span { font-size: 1rem; color: var(--text-muted); font-weight: 400; }
.plan-features { list-style: none; margin-bottom: var(--space-xl); }
.plan-features li { padding: 12px 0; color: var(--text-secondary); display: flex; align-items: center; gap: 12px; font-size: 1rem; }
.plan-features li::before { content: '✓'; color: var(--success-green); font-weight: bold; }
.plan-warning { background: rgba(255, 68, 68, 0.1); border: 1px solid rgba(255, 68, 68, 0.3); border-radius: var(--radius-md); padding: var(--space-md); margin-bottom: var(--space-xl); font-size: 0.875rem; color: var(--text-secondary); }
.plan-warning.success { background: rgba(34, 197, 94, 0.1); border-color: rgba(34, 197, 94, 0.3); }
.plan-cta { text-align: center; }
.plan-cta .btn { width: 100%; padding: 16px; }

/* Comparison Table */
.comparison-table { width: 100%; max-width: 800px; margin: var(--space-3xl) auto 0; border-collapse: separate; border-spacing: 0; background: var(--bg-secondary); border-radius: var(--radius-xl); overflow: hidden; border: var(--glass-border); }
.comparison-table th, .comparison-table td { padding: var(--space-lg); text-align: left; border-bottom: 1px solid rgba(255, 255, 255, 0.06); }
.comparison-table th { background: var(--bg-elevated); font-weight: 600; font-size: 1rem; }
.comparison-table th:nth-child(2) { background: linear-gradient(135deg, var(--brand-red) 0%, #b80810 100%); color: white; text-align: center; position: relative; }
.comparison-table th:nth-child(2)::after { content: '推荐'; position: absolute; top: 6px; right: 12px; font-size: 0.625rem; font-weight: 700; background: rgba(255,255,255,0.2); padding: 2px 8px; border-radius: var(--radius-sm); }
.comparison-table th:nth-child(3) { text-align: center; }
.comparison-table td { color: var(--text-secondary); font-size: 0.9375rem; }
.comparison-table td:nth-child(2), .comparison-table td:nth-child(3) { text-align: center; font-weight: 500; color: var(--text-primary); }
.comparison-table tr:last-child td { border-bottom: none; }
.comparison-table tr:hover td { background: rgba(255,255,255,0.02); }
.highlight-cell { color: var(--brand-red) !important; font-weight: 600 !important; }

/* Core Features Section */
.features-section { padding: var(--space-4xl) 0; background: var(--bg-secondary); position: relative; }
.features-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent 0%, rgba(229, 9, 20, 0.2) 50%, transparent 100%); }
.features-section .section-title + p { text-align: center; margin-bottom: var(--space-2xl); font-size: 1.125rem; }
.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.feature-item { background: var(--gradient-card); border-radius: var(--radius-xl); padding: var(--space-2xl); text-align: center; border: var(--glass-border); transition: all var(--transition-smooth); }
.feature-item:hover { transform: translateY(-8px) scale(1.02); border-color: rgba(229, 9, 20, 0.3); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5); }
.feature-icon { font-size: 3.5rem; display: block; color: var(--brand-red); margin-bottom: var(--space-md); }
.feature-title { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 600; margin-bottom: var(--space-md); }
.feature-desc { color: var(--text-secondary); font-size: 1rem; line-height: 1.8; }
.advantages-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); }
.advantage-item { background: var(--gradient-card); border-radius: var(--radius-lg); padding: var(--space-xl); text-align: center; border: var(--glass-border); transition: all var(--transition-normal); }
.advantage-item:hover { transform: translateY(-4px); border-color: rgba(229, 9, 20, 0.2); }
.advantage-item .feature-icon { font-size: 2rem; margin-bottom: var(--space-sm); }
.advantage-item .feature-title { font-size: 1.125rem; margin-bottom: var(--space-xs); }
.advantage-item .feature-desc { font-size: 0.875rem; }

/* Guide Section */
.guide-section { padding: var(--space-4xl) 0; background: var(--bg-primary); }
.guide-steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); position: relative; }
.guide-steps::before { content: ''; position: absolute; top: 48px; left: 12.5%; right: 12.5%; height: 2px; background: linear-gradient(90deg, var(--brand-red), rgba(229, 9, 20, 0.3)); z-index: 0; }
.guide-step { background: var(--gradient-card); border-radius: var(--radius-xl); padding: var(--space-xl); text-align: center; border: var(--glass-border); position: relative; z-index: 1; transition: all var(--transition-normal); }
.guide-step:hover { transform: translateY(-4px); }
.guide-step-number { width: 56px; height: 56px; background: var(--gradient-red); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto var(--space-lg); font-size: 1.5rem; font-weight: 700; color: white; box-shadow: 0 4px 20px rgba(229, 9, 20, 0.4); }
.guide-step-icon { font-size: 2.5rem; display: block; color: var(--brand-red); margin-bottom: var(--space-sm); }
.guide-step-title { font-family: var(--font-serif); font-size: 1.125rem; font-weight: 600; margin-bottom: var(--space-sm); }
.guide-step-desc { font-size: 0.875rem; color: var(--text-secondary); line-height: 1.6; }

/* FAQ Section */
.faq-section { padding: var(--space-4xl) 0; background: var(--bg-secondary); }
.faq-section .container { max-width: 800px; }
.faq-list { margin-top: var(--space-2xl); }
.faq-item { background: var(--bg-secondary); border-radius: var(--radius-lg); margin-bottom: var(--space-md); border: var(--glass-border); overflow: hidden; transition: all var(--transition-normal); }
.faq-item:hover { border-color: rgba(255, 255, 255, 0.12); }
.faq-item.active { border-color: rgba(229, 9, 20, 0.3); }
.faq-question { width: 100%; background: transparent; border: none; padding: var(--space-lg) var(--space-xl); display: flex; align-items: center; justify-content: space-between; cursor: pointer; text-align: left; color: var(--text-primary); font-size: 1.0625rem; font-weight: 500; transition: color var(--transition-fast); }
.faq-question:hover { color: var(--brand-red); }
.faq-icon { width: 28px; height: 28px; display: flex; align-items: center; justify-content: center; color: var(--text-muted); font-size: 1.5rem; transition: transform var(--transition-normal); flex-shrink: 0; }
.faq-item.active .faq-icon { transform: rotate(45deg); color: var(--brand-red); }
.faq-answer { max-height: 0; overflow: hidden; transition: max-height var(--transition-normal); }
.faq-item.active .faq-answer { max-height: 300px; }
.faq-answer-inner { padding: 0 var(--space-xl) var(--space-lg); color: var(--text-secondary); font-size: 1rem; line-height: 1.8; }

/* Reviews Section */
.reviews-section { padding: var(--space-4xl) 0; background: var(--bg-primary); position: relative; }
.reviews-section::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent 0%, rgba(229, 9, 20, 0.2) 50%, transparent 100%); }
.reviews-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.review-card { background: var(--gradient-card); border-radius: var(--radius-xl); padding: var(--space-xl); border: var(--glass-border); transition: all var(--transition-smooth); }
.review-card:hover { transform: translateY(-6px); border-color: rgba(229, 9, 20, 0.2); box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5); }
.review-header { display: flex; align-items: center; gap: var(--space-md); margin-bottom: var(--space-lg); }
.review-avatar { width: 52px; height: 52px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 1.25rem; font-weight: 600; color: white; flex-shrink: 0; }
.review-avatar.blue { background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 100%); }
.review-avatar.pink { background: linear-gradient(135deg, #f472b6 0%, #ec4899 100%); }
.review-avatar.purple { background: linear-gradient(135deg, #a78bfa 0%, #8b5cf6 100%); }
.review-avatar.green { background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%); }
.review-avatar.orange { background: linear-gradient(135deg, #fb923c 0%, #f97316 100%); }
.review-avatar.teal { background: linear-gradient(135deg, #2dd4bf 0%, #14b8a6 100%); }
.review-name { font-weight: 600; font-size: 1rem; margin-bottom: 4px; }
.review-stars { color: var(--accent-gold); font-size: 0.875rem; letter-spacing: 3px; }
.review-content { color: var(--text-secondary); font-size: 0.9375rem; line-height: 1.7; }

/* Footer */
.footer { background: var(--bg-secondary); padding: var(--space-3xl) var(--space-lg); text-align: center; border-top: var(--glass-border); position: relative; }
.footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 1px; background: linear-gradient(90deg, transparent 0%, rgba(229, 9, 20, 0.3) 50%, transparent 100%); }
.footer-brand { font-family: var(--font-serif); font-size: 1.5rem; font-weight: 700; margin-bottom: var(--space-sm); letter-spacing: 2px; }
.footer-slogan { color: var(--text-muted); font-size: 0.9375rem; margin-bottom: var(--space-lg); }
.footer-copy { color: var(--text-muted); font-size: 0.8125rem; }

/* Floating Button */
.floating-cs-btn { position: fixed; bottom: 32px; right: 32px; width: 60px; height: 60px; background: var(--gradient-red); border-radius: 50%; display: flex; align-items: center; justify-content: center; box-shadow: 0 6px 30px rgba(229, 9, 20, 0.5); z-index: 9999; transition: all var(--transition-normal); animation: float 3s ease-in-out infinite; border: 1px solid rgba(255,255,255,0.2); }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.floating-cs-btn:hover { transform: scale(1.1); box-shadow: 0 8px 40px rgba(229, 9, 20, 0.7); }
.floating-cs-btn svg { width: 28px; height: 28px; fill: white; }

/* Lightbox */
.lightbox { display: none; position: fixed; inset: 0; background: rgba(0, 0, 0, 0.95); z-index: 9999; align-items: center; justify-content: center; cursor: pointer; }
.lightbox.active { display: flex; }
.lightbox img { max-width: 90%; max-height: 90%; border-radius: var(--radius-md); }

/* Animations */
@keyframes fadeInUp { from { opacity: 0; transform: translateY(40px); } to { opacity: 1; transform: translateY(0); } }
.animate-entry { animation: fadeInUp 0.8s ease forwards; opacity: 0; }
.delay-1 { animation-delay: 0.1s; } .delay-2 { animation-delay: 0.2s; } .delay-3 { animation-delay: 0.3s; } .delay-4 { animation-delay: 0.4s; } .delay-5 { animation-delay: 0.5s; } .delay-6 { animation-delay: 0.6s; } .delay-7 { animation-delay: 0.7s; } .delay-8 { animation-delay: 0.8s; }

/* Tablet Responsive */
@media (max-width: 1024px) {
  :root { --container-padding: 20px; }
  h1 { font-size: 2.5rem; } h2 { font-size: 2rem; }
  .hero-title { font-size: 3rem; } .hero-subtitle { font-size: 1.25rem; }
  .pain-grid, .feature-grid, .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-steps { grid-template-columns: repeat(2, 1fr); }
  .guide-steps::before { display: none; }
  .reviews-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile Responsive */
@media (max-width: 640px) {
  :root { --container-padding: 16px; }
  h1 { font-size: 2rem; } h2 { font-size: 1.75rem; } h3 { font-size: 1.25rem; }
  .nav { padding: 0 var(--space-md); height: 60px; }
  .nav-logo { font-size: 1.25rem; }
  .nav-hamburger { display: flex; }
  .nav-menu { display: none; position: absolute; top: 60px; left: 0; right: 0; background: var(--bg-glass); backdrop-filter: blur(20px); flex-direction: column; padding: var(--space-md); gap: 0; border-bottom: var(--glass-border); }
  .nav-menu.active { display: flex; }
  .nav-menu .nav-link { padding: var(--space-md); width: 100%; text-align: left; border-bottom: 1px solid rgba(255,255,255,0.05); }
  .nav-menu .nav-link::after { display: none; }
  .hero { padding: 100px var(--space-md) var(--space-2xl); min-height: auto; }
  .hero-title { font-size: 2rem; line-height: 1.2; }
  .hero-subtitle { font-size: 1rem; }
  .hero-slogan { font-size: 0.75rem; letter-spacing: 2px; padding: 6px 16px; }
  .hero-devices { flex-direction: column; gap: var(--space-sm); }
  .hero-devices span { font-size: 0.875rem; }
  .hero-cta .btn { width: 100%; padding: 16px 24px; }
  .stats-container { gap: var(--space-xl); }
  .stat-value { font-size: 2.5rem; }
  .stat-label { font-size: 0.8125rem; }
  .section-title { font-size: 1.75rem; margin-bottom: var(--space-2xl); }
  .pain-grid, .plan-grid, .feature-grid, .advantages-grid, .guide-steps, .reviews-grid { grid-template-columns: 1fr; gap: var(--space-lg); }
  .card-pain, .card-plan, .feature-item, .guide-step, .review-card { padding: var(--space-lg); }
  .plan-price { font-size: 2.5rem; }
  .comparison-table { font-size: 0.8125rem; display: block; overflow-x: auto; }
  .comparison-table th, .comparison-table td { padding: var(--space-sm) var(--space-md); min-width: 80px; }
  .faq-question { font-size: 0.9375rem; padding: var(--space-md); }
  .faq-answer-inner { padding: 0 var(--space-md) var(--space-md); font-size: 0.9375rem; }
  .floating-cs-btn { bottom: 20px; right: 20px; width: 54px; height: 54px; }
  .floating-cs-btn svg { width: 24px; height: 24px; }
  .video-container { border-radius: var(--radius-md); padding: 4px; }
  .footer { padding: var(--space-2xl) var(--space-md); }
  .footer-brand { font-size: 1.25rem; }
}

/* Desktop 1920px+ Responsive */
@media (min-width: 1920px) {
  :root { --container-max: 1400px; --container-padding: 48px; }
  h1 { font-size: 4.5rem; } h2 { font-size: 3rem; } h3 { font-size: 2rem; }
  .hero { padding: 160px var(--space-3xl) var(--space-4xl); }
  .hero-title { font-size: 5rem; }
  .hero-subtitle { font-size: 1.75rem; }
  .hero-slogan { font-size: 1rem; margin-bottom: var(--space-2xl); }
  .hero-devices { gap: var(--space-xl); margin-bottom: var(--space-2xl); }
  .hero-devices span { font-size: 1.125rem; }
  .hero-cta .btn { padding: 20px 56px; font-size: 1.25rem; }
  .section-title { font-size: 3rem; margin-bottom: var(--space-4xl); }
  .stats-container { gap: 80px; margin-bottom: var(--space-3xl); }
  .stat-value { font-size: 4.5rem; }
  .stat-label { font-size: 1.125rem; }
  .video-container { max-width: 1100px; }
  .pain-grid, .feature-grid { gap: var(--space-2xl); }
  .card-pain, .feature-item { padding: var(--space-3xl); }
  .plan-grid { gap: var(--space-2xl); max-width: 1100px; }
  .card-plan { padding: var(--space-3xl); }
  .plan-price { font-size: 3.5rem; }
  .comparison-table { max-width: 1000px; }
  .advantages-grid { grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); }
  .guide-steps { gap: var(--space-2xl); }
  .faq-section .container { max-width: 1000px; }
  .reviews-grid { gap: var(--space-2xl); }
  .review-card { padding: var(--space-2xl); }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
  .animate-entry { opacity: 1; transform: none; }
  .floating-cs-btn { animation: none; }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-red { color: var(--brand-red); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
::selection { background: rgba(229, 9, 20, 0.3); color: var(--text-primary); }

/* Phase 4 B1: legacy page chrome mapped to the TopEmby semantic components. */
.nav.te-header,
.page-header.te-header {
  height: 64px;
  padding-inline: clamp(16px, 3vw, 42px);
  background: var(--surface);
  border-bottom: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
}

.nav.te-header.scrolled {
  height: 64px;
  background: var(--surface-strong);
  border-bottom-color: var(--border-strong);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

.nav.te-header .nav-logo,
.page-header.te-header .page-logo {
  font-family: "Inter", "Noto Sans SC", sans-serif;
  font-size: 1rem;
  letter-spacing: .08em;
}

.nav.te-header .nav-link {
  color: var(--text-secondary);
}

.nav.te-header .nav-link::after {
  background: var(--brand-red);
}

.nav.te-header .nav-link:hover,
.nav.te-header .nav-link.active {
  color: var(--text-primary);
}

.nav.te-header .te-button-secondary {
  min-height: 40px;
  padding: .5rem .875rem;
}

.page-header.te-header + .main-content {
  padding-top: calc(64px + var(--space-2xl));
}

.nav.te-header + main {
  padding-top: 64px;
}

.footer.te-footer {
  display: grid;
  justify-items: center;
  gap: .5rem;
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1rem, 3vw, 2.5rem) 2rem;
  background: var(--surface-strong);
  border-top: 1px solid var(--border-subtle);
}

.footer.te-footer::before {
  background: linear-gradient(90deg, transparent, var(--brand-glow), transparent);
}

.footer.te-footer .footer-brand {
  margin: 0;
  color: var(--text-primary);
  font-family: "Inter", "Noto Sans SC", sans-serif;
  font-size: 1rem;
  letter-spacing: .1em;
}

.footer.te-footer .footer-slogan {
  margin: 0;
  color: var(--text-secondary);
}

.footer.te-footer .footer-copy {
  margin-top: .5rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .nav.te-header,
  .page-header.te-header {
    height: 58px;
    padding-inline: 16px;
  }

  .nav.te-header .te-button-secondary {
    min-height: 38px;
    padding-inline: .75rem;
    font-size: .8125rem;
  }

  .page-header.te-header + .main-content {
    padding-top: calc(58px + var(--space-2xl));
  }

  .nav.te-header + main {
    padding-top: 58px;
  }

  .floating-cs-btn {
    right: max(20px, env(safe-area-inset-right));
    bottom: max(20px, env(safe-area-inset-bottom));
  }

  body:has(.floating-cs-btn) .footer.te-footer {
    padding-bottom: calc(2rem + 74px + env(safe-area-inset-bottom));
  }
}