/* ===================================================================
   Mitce 加速器 - Official Stylesheet (Pure Native CSS3)
   Theme: Titanium Dark Minimalist (Charcoal #0D1117, Clean Silver, Electric Blue)
   Optimized for Sub-Second Loading, Ultra-Responsive UX & Maximum SEO
   =================================================================== */

:root {
  /* Titanium Dark Palette */
  --bg-dark: #0d1117;
  --bg-surface: #11151e;
  --bg-card: #161b26;
  --bg-card-hover: #1c2230;
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(59, 130, 246, 0.4);

  /* Electric Blue Accents */
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-glow: rgba(37, 99, 235, 0.28);
  --blue-glow-strong: rgba(59, 130, 246, 0.45);

  /* Titanium & Clean Silver Typography */
  --text-white: #ffffff;
  --text-silver: #f0f6fc;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Accent Highlight: Amber & Emerald */
  --amber-400: #fbbf24;
  --amber-500: #f59e0b;
  --amber-glow: rgba(245, 158, 11, 0.25);
  --emerald-400: #34d399;
  --emerald-500: #10b981;

  /* Typography & Sizing */
  --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Reset & Smooth Scrolling */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  font-family: var(--font-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  min-height: 100vh;
  line-height: 1.65;
  background-color: var(--bg-dark);
  color: var(--text-primary);
  overflow-x: hidden;
  position: relative;
}

/* Ambient Titanium Grid Background */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(37, 99, 235, 0.08) 0%, transparent 60%),
    radial-gradient(circle at 80% 30%, rgba(96, 165, 250, 0.05) 0%, transparent 50%),
    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: 100% 100%, 100% 100%, 48px 48px, 48px 48px;
  pointer-events: none;
  z-index: 0;
}

.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

/* Common Section Layout */
section {
  padding: 84px 0;
  position: relative;
  z-index: 1;
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 52px auto;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.28);
  border-radius: var(--radius-full);
  color: var(--blue-400);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-white);
  letter-spacing: -0.5px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Gradient Text Effect */
.gradient-text {
  background: linear-gradient(135deg, #ffffff 10%, #e2e8f0 45%, #60a5fa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.gradient-blue {
  background: linear-gradient(135deg, #60a5fa 0%, #2563eb 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ===================================================================
   Buttons (Highly Distinct, Tactile 3D Affordance & Clear Hover Glow)
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: inherit;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  min-height: 46px;
  letter-spacing: 0.3px;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 18px rgba(37, 99, 235, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(37, 99, 235, 0.65), inset 0 1px 0 rgba(255, 255, 255, 0.4);
  color: #ffffff;
}

.btn-primary:active {
  transform: translateY(1px);
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.4);
}

.btn-secondary {
  background: linear-gradient(180deg, #1c2333 0%, #131926 100%);
  color: #f0f6fc;
  border: 1px solid rgba(255, 255, 255, 0.16);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
  background: linear-gradient(180deg, #242d42 0%, #182030 100%);
  border-color: rgba(96, 165, 250, 0.45);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.45), 0 0 12px rgba(59, 130, 246, 0.25);
}

.btn-secondary:active {
  transform: translateY(1px);
}

.btn-outline-blue {
  background: rgba(37, 99, 235, 0.12);
  color: #60a5fa;
  border: 1.5px solid rgba(59, 130, 246, 0.45);
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.2);
}

.btn-outline-blue:hover {
  background: rgba(37, 99, 235, 0.25);
  border-color: #60a5fa;
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.35);
}

.btn-sm {
  padding: 8px 20px;
  font-size: 0.875rem;
  min-height: 40px;
}

.btn-md {
  padding: 12px 28px;
  font-size: 0.9375rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.0625rem;
  font-weight: 700;
}

/* ===================================================================
   Header & Navbar (Sticky, Distinct Crisp Border Separation)
   =================================================================== */
.navbar {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background: rgba(13, 17, 23, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1.5px solid rgba(59, 130, 246, 0.3);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.55), 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: var(--transition);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-white);
  letter-spacing: -0.3px;
}

.brand-logo-img {
  width: 36px;
  height: 36px;
  display: block;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover {
  color: var(--text-white);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--blue-500);
  transition: width 0.2s ease;
}

.nav-link:hover::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Mobile Hamburger Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  padding: 8px;
  cursor: pointer;
  min-height: 40px;
  min-width: 40px;
  align-items: center;
  justify-content: center;
}

.mobile-drawer {
  display: none;
  background: rgba(13, 17, 23, 0.98);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 24px;
  flex-direction: column;
  gap: 16px;
}

.mobile-drawer.active {
  display: flex;
}

/* ===================================================================
   Hero Section (2-Column Grid)
   =================================================================== */
.hero-section {
  padding: 68px 0 90px 0;
  position: relative;
  overflow: hidden;
}

.hero-glow-1 {
  position: absolute;
  top: 10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}

.hero-glow-2 {
  position: absolute;
  top: 25%;
  right: -8%;
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.12) 0%, transparent 70%);
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 48px;
}

.hero-text-col {
  position: relative;
  z-index: 2;
}

.discount-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 18px;
  background: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.35);
  border-radius: var(--radius-full);
  color: var(--amber-400);
  font-size: 0.9375rem;
  font-weight: 700;
  margin-bottom: 24px;
  box-shadow: 0 4px 16px var(--amber-glow);
}

.hero-title {
  font-size: 3.125rem;
  font-weight: 900;
  line-height: 1.18;
  margin-bottom: 22px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 34px;
  max-width: 620px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}

.hero-stats-row {
  display: flex;
  align-items: center;
  gap: 36px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.stat-item h4,
.stat-item .stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-white);
  line-height: 1.2;
}

.stat-item p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Hero Vector Illustration Art (Transparent Background, Fully Animated) */
.hero-art-col {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-vector-card {
  width: 100%;
  max-width: 500px;
  background: transparent;
  border: none;
  padding: 10px;
  box-shadow: none;
  filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.4));
}

.vector-art-svg {
  width: 100%;
  height: auto;
  display: block;
  overflow: visible;
}

/* Vector Art SVG Keyframe Animations */
.anim-core {
  transform-origin: 210px 110px;
  animation: pulseCore 3.5s ease-in-out infinite;
}

.anim-orbit {
  animation: pulseGlow 4s ease-in-out infinite;
}

.anim-laser {
  stroke-dasharray: 6 5;
  animation: laserDash 1.4s linear infinite;
}

.anim-node-hk {
  animation: floatNode1 4s ease-in-out infinite;
}

.anim-node-jp {
  animation: floatNode2 4.5s ease-in-out infinite 0.6s;
}

.anim-node-us {
  animation: floatNode3 5s ease-in-out infinite 1.2s;
}

.anim-node-sg {
  animation: floatNode4 4.3s ease-in-out infinite 1.8s;
}

@keyframes pulseCore {
  0%, 100% {
    transform: scale(1);
    filter: drop-shadow(0 0 10px rgba(37, 99, 235, 0.6));
  }
  50% {
    transform: scale(1.04);
    filter: drop-shadow(0 0 24px rgba(96, 165, 250, 0.95));
  }
}

@keyframes pulseGlow {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.75; }
}

@keyframes laserDash {
  to { stroke-dashoffset: -22; }
}

@keyframes floatNode1 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-9px); }
}

@keyframes floatNode2 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-11px); }
}

@keyframes floatNode3 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes floatNode4 {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Page & Section Fade In Transitions */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(22px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-text-col {
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.hero-art-col {
  animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.15s both;
}

/* ===================================================================
   Cards (Core Advantages & Streaming/AI)
   =================================================================== */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-bottom: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--blue-500), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-focus);
  background: var(--bg-card-hover);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 22px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* Streaming & AI Wide Showcase Card */
.media-ai-card {
  background: linear-gradient(135deg, rgba(22, 27, 36, 0.95), rgba(17, 21, 30, 0.9));
  border: 1px solid rgba(59, 130, 246, 0.25);
  border-radius: var(--radius-lg);
  padding: 38px 36px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 36px;
}

.media-ai-badge {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--blue-400);
  background: rgba(37, 99, 235, 0.15);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.media-ai-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 12px;
  line-height: 1.3;
}

.media-ai-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.app-logos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}

.app-logo-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 12px;
  padding: 14px 10px;
  text-align: center;
  transition: var(--transition);
}

.app-logo-item:hover {
  background: rgba(37, 99, 235, 0.1);
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
}

.app-logo-icon {
  font-size: 1.6rem;
  margin-bottom: 6px;
  display: block;
}

.app-logo-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-silver);
}

/* ===================================================================
   Pricing Section (3-Column Grid)
   =================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 38px 30px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
}

/* Highlight Recommended Tier */
.pricing-card.featured {
  border-color: var(--blue-500);
  background: linear-gradient(180deg, rgba(37, 99, 235, 0.1) 0%, var(--bg-card) 45%);
  box-shadow: 0 10px 40px rgba(37, 99, 235, 0.18);
  transform: scale(1.02);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-6px);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  letter-spacing: 0.5px;
  box-shadow: 0 4px 14px var(--blue-glow);
}

.pricing-tier-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.pricing-tier-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  min-height: 42px;
  margin-bottom: 20px;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-subtle);
}

.price-currency {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
}

.price-amount {
  font-size: 3rem;
  font-weight: 900;
  color: var(--text-white);
  line-height: 1;
}

.price-period {
  font-size: 0.9375rem;
  color: var(--text-secondary);
}

.pricing-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.pricing-check-icon {
  width: 18px;
  height: 18px;
  color: var(--emerald-400);
  flex-shrink: 0;
}

.pricing-cta {
  width: 100%;
}

/* ===================================================================
   Supported Platforms & Download Section (4 Columns)
   =================================================================== */
.platforms-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.platform-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition);
}

.platform-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-focus);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.platform-icon {
  font-size: 2.75rem;
  margin-bottom: 16px;
  display: block;
}

.platform-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
}

.platform-clients {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  min-height: 48px;
  line-height: 1.5;
}

.platform-download-btn {
  width: 100%;
}

/* ===================================================================
   Why Choose Section (SEO/GEO/SERP Focused, Engaging Cards)
   =================================================================== */
.why-choose-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  transition: var(--transition);
}

.why-card:hover {
  border-color: rgba(59, 130, 246, 0.35);
  transform: translateY(-4px);
}

.why-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.why-emoji {
  font-size: 1.75rem;
}

.why-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-white);
}

.why-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* ===================================================================
   Testimonials Marquee Section (Auto-Scrolling, 5-Star Reviews)
   =================================================================== */
.marquee-container {
  position: relative;
  overflow: hidden;
  padding: 24px 0;
  mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: scrollMarquee 45s linear infinite;
}

.marquee-container:hover .marquee-track {
  animation-play-state: paused;
}

@keyframes scrollMarquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 26px 24px;
  width: 360px;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.testimonial-stars {
  color: var(--amber-400);
  font-size: 1.1rem;
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.testimonial-quote {
  font-size: 0.9375rem;
  color: var(--text-primary);
  line-height: 1.65;
  margin-bottom: 16px;
  font-style: italic;
}

.testimonial-user {
  display: flex;
  align-items: center;
  gap: 12px;
}

.user-avatar-circle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  color: #ffffff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9375rem;
  flex-shrink: 0;
}

.user-meta h4,
.user-meta .user-name {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-white);
}

.user-meta p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===================================================================
   FAQ Section (Native HTML5 Details & Summary Accordion)
   =================================================================== */
.faq-accordion-group {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

details.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  transition: var(--transition);
}

details.faq-item:hover {
  border-color: rgba(59, 130, 246, 0.3);
}

details.faq-item[open] {
  border-color: rgba(59, 130, 246, 0.4);
  background: var(--bg-card-hover);
}

summary.faq-question {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-white);
  gap: 16px;
}

summary.faq-question::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  width: 20px;
  height: 20px;
  color: var(--blue-400);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

details[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-answer {
  padding-top: 16px;
  margin-top: 14px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===================================================================
   Secondary CTA Section (Bottom Intercept)
   =================================================================== */
.secondary-cta-section {
  padding: 70px 0 90px 0;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.18) 0%, rgba(22, 27, 36, 0.95) 100%);
  border: 1px solid rgba(59, 130, 246, 0.35);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

.cta-banner h2 {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 16px;
}

.cta-banner p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* ===================================================================
   Footer (4 Titles Only, Opens in New Page)
   =================================================================== */
.footer {
  background: #090d13;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 48px 0 36px 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
}

.footer-link:hover {
  color: var(--blue-400);
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ===================================================================
   Responsive Mobile Media Queries (@media)
   =================================================================== */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }

  .hero-text-col {
    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .hero-stats-row {
    justify-content: center;
  }

  .cards-grid-3,
  .pricing-grid,
  .why-choose-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .media-ai-card {
    grid-template-columns: 1fr;
  }

  .pricing-card.featured {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .cards-grid-3,
  .pricing-grid,
  .why-choose-grid,
  .platforms-grid {
    grid-template-columns: 1fr;
  }

  .app-logos-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero-stats-row {
    flex-direction: column;
    gap: 16px;
  }

  .footer-nav {
    gap: 20px;
  }
}


/* ===================================================================
   Article Hub & Article Pages Styling
   =================================================================== */
.articles-hub-hero {
  padding: 60px 0 40px 0;
  text-align: center;
}

.articles-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  margin-top: 36px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-focus);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

.article-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--blue-400);
  background: rgba(37, 99, 235, 0.12);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
  align-self: flex-start;
}

.article-card-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-white);
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

/* Breadcrumbs */
.breadcrumb-nav {
  padding: 24px 0 12px 0;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.breadcrumb-item a {
  color: var(--text-secondary);
}

.breadcrumb-item a:hover {
  color: var(--blue-400);
}

.breadcrumb-separator {
  color: var(--text-muted);
}

.breadcrumb-item.active {
  color: var(--text-primary);
  font-weight: 600;
}

/* Article Detail Page Layout */
.article-detail-section {
  padding: 20px 0 80px 0;
}

.article-layout {
  max-width: 860px;
  margin: 0 auto;
}

.article-header {
  margin-bottom: 36px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border-subtle);
}

.article-main-title {
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-white);
  margin-bottom: 18px;
}

.article-info-bar {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-body {
  color: var(--text-primary);
  font-size: 1.0625rem;
  line-height: 1.85;
}

.article-body h2 {
  font-size: 1.625rem;
  font-weight: 800;
  color: var(--text-white);
  margin: 44px 0 18px 0;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-silver);
  margin: 28px 0 14px 0;
}

.article-body p {
  margin-bottom: 20px;
  color: #cbd5e1;
}

.article-body ul, .article-body ol {
  margin: 0 0 24px 24px;
  color: #cbd5e1;
}

.article-body li {
  margin-bottom: 10px;
}

.article-body blockquote {
  background: rgba(37, 99, 235, 0.08);
  border-left: 4px solid var(--blue-500);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 16px 20px;
  margin: 24px 0;
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.7;
}

.article-body strong {
  color: var(--text-white);
}

.article-body a {
  color: var(--blue-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover {
  color: #93c5fd;
}

.article-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 0.9375rem;
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.article-body th, .article-body td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

.article-body th {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-white);
  font-weight: 700;
}

.article-body tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

/* Standalone Info Pages (About, Terms, Privacy, Sitemap) */
.page-hero {
  padding: 50px 0 30px 0;
  text-align: center;
}

.page-title {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--text-white);
  margin-bottom: 14px;
}

.page-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.info-content-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 44px 38px;
  margin: 30px auto 60px auto;
  max-width: 900px;
}

.info-section {
  margin-bottom: 36px;
}

.info-section:last-child {
  margin-bottom: 0;
}

.info-section h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-section p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 14px;
}

.info-section ul {
  margin-left: 20px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
}

.info-section li {
  margin-bottom: 8px;
}

/* Sitemap List Layout */
.sitemap-category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.sitemap-cat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px;
}

.sitemap-cat-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.sitemap-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sitemap-links-list a {
  color: var(--text-primary);
  font-size: 0.9375rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.sitemap-links-list a:hover {
  color: var(--blue-400);
  transform: translateX(4px);
}

@media (max-width: 768px) {
  .articles-grid-3,
  .sitemap-category-grid {
    grid-template-columns: 1fr;
  }

  .info-content-card {
    padding: 28px 20px;
  }

  .article-main-title {
    font-size: 1.75rem;
  }
}