/* ==========================================================================
   WgetCloud Official Landing Page Stylesheet
   Pure Native CSS - Ultra Fast Sub-Second Loading (wget-yun.mom)
   Zero Heavy External JS/CSS Frameworks - Maximum Performance & SEO Score
   ========================================================================== */

:root {
  --bg-dark: #070a14;
  --bg-surface: #0b1120;
  --bg-card: rgba(15, 23, 42, 0.75);
  --bg-card-hover: rgba(22, 33, 62, 0.88);
  --bg-card-featured: rgba(18, 30, 68, 0.95);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.14);
  --border-highlight: rgba(0, 242, 254, 0.5);
  
  --primary: #00f2fe;
  --primary-rgb: 0, 242, 254;
  --primary-dark: #0284c7;
  --secondary: #3b82f6;
  --accent-purple: #8b5cf6;
  --accent-pink: #ec4899;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 35px rgba(0, 242, 254, 0.28);
  --shadow-glow-purple: 0 0 35px rgba(139, 92, 246, 0.25);
  --transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-family: var(--font-sans);
  background-color: var(--bg-dark);
  color: var(--text-main);
  scroll-behavior: smooth;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* ==========================================================================
   DYNAMIC BACKGROUND (动态背景体系: 光流 + 数据流线条 / Pure Native CSS 60FPS)
   ========================================================================== */
.bg-dynamic-wrap {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(circle at 50% 10%, #0a1128 0%, #070a14 65%, #04060d 100%);
}

/* 1. Luminous Ambient Aurora Blobs (深层极光扩散) */
.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  opacity: 0.35;
  will-change: transform;
}

.bg-orb-1 {
  top: -12%;
  left: 12%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.42) 0%, rgba(59, 130, 246, 0.18) 60%, transparent 100%);
  animation: floatOrb1 20s infinite alternate ease-in-out;
}

.bg-orb-2 {
  top: 35%;
  right: -8%;
  width: 650px;
  height: 650px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.36) 0%, rgba(236, 72, 153, 0.12) 65%, transparent 100%);
  animation: floatOrb2 25s infinite alternate ease-in-out;
}

.bg-orb-3 {
  bottom: -15%;
  left: 25%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(2, 132, 199, 0.32) 0%, rgba(16, 185, 129, 0.1) 60%, transparent 100%);
  animation: floatOrb3 22s infinite alternate ease-in-out;
}

/* 2. Cyber Matrix Grid Overlay (数字矩阵网格) */
.bg-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(0, 242, 254, 0.035) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 50%, transparent 92%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 50%, transparent 92%);
}

/* 3. Luminous Flow Waves (流动光流薄雾层) */
.light-flow-wave {
  position: absolute;
  inset: -20%;
  pointer-events: none;
  filter: blur(45px);
  opacity: 0.55;
  mix-blend-mode: screen;
}

.light-flow-1 {
  background: radial-gradient(ellipse 70% 35% at 40% 30%, rgba(0, 242, 254, 0.22) 0%, rgba(59, 130, 246, 0.08) 50%, transparent 80%);
  animation: waveMotion1 14s infinite alternate ease-in-out;
}

.light-flow-2 {
  background: radial-gradient(ellipse 65% 30% at 65% 70%, rgba(139, 92, 246, 0.2) 0%, rgba(0, 242, 254, 0.06) 55%, transparent 80%);
  animation: waveMotion2 18s infinite alternate ease-in-out;
}

/* 4. Diagonal Laser Light Stream (斜向高能穿透光流) */
.light-flow-beam-diagonal {
  position: absolute;
  top: -40%;
  left: -20%;
  width: 160%;
  height: 200%;
  pointer-events: none;
  overflow: hidden;
  transform: rotate(-32deg);
}

.light-flow-beam-diagonal::before,
.light-flow-beam-diagonal::after {
  content: "";
  position: absolute;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(0, 242, 254, 0.1) 20%, rgba(0, 242, 254, 0.95) 50%, #ffffff 52%, rgba(0, 242, 254, 0.95) 54%, rgba(59, 130, 246, 0.2) 75%, transparent 100%);
  filter: drop-shadow(0 0 10px #00f2fe) drop-shadow(0 0 22px rgba(0, 242, 254, 0.8));
  opacity: 0;
  will-change: transform, opacity;
}

.light-flow-beam-diagonal::before {
  top: 35%;
  animation: laserSweep1 7s infinite cubic-bezier(0.25, 1, 0.5, 1);
}

.light-flow-beam-diagonal::after {
  top: 68%;
  background: linear-gradient(90deg, transparent 0%, rgba(139, 92, 246, 0.1) 20%, rgba(139, 92, 246, 0.95) 50%, #ffffff 52%, rgba(0, 242, 254, 0.9) 55%, transparent 100%);
  filter: drop-shadow(0 0 10px #8b5cf6) drop-shadow(0 0 24px rgba(139, 92, 246, 0.8));
  animation: laserSweep2 9.5s infinite cubic-bezier(0.25, 1, 0.5, 1) 3s;
}

/* 5. Fiber Optic Data Streams (数据流线条体系) */
.data-streams-track {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.stream-line {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, 
    rgba(255, 255, 255, 0) 0%, 
    rgba(0, 242, 254, 0.05) 20%, 
    rgba(0, 242, 254, 0.08) 50%, 
    rgba(0, 242, 254, 0.05) 80%, 
    rgba(255, 255, 255, 0) 100%);
}

/* High-speed glowing data packet (数据流光脉冲实体) */
.stream-line::after {
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  width: 2px;
  height: 120px;
  transform: translateX(-50%) translate3d(0, -150px, 0);
  background: linear-gradient(180deg, 
    transparent 0%, 
    rgba(0, 242, 254, 0.15) 30%, 
    rgba(0, 242, 254, 0.6) 70%, 
    #00f2fe 92%, 
    #ffffff 100%);
  border-radius: 0 0 2px 2px;
  box-shadow: 
    0 0 8px #ffffff,
    0 0 16px #00f2fe,
    0 0 32px rgba(0, 242, 254, 0.85);
  opacity: 0;
  will-change: transform, opacity;
  animation: streamFlowDown 3.2s infinite cubic-bezier(0.4, 0, 0.2, 1);
}

/* Individual Data Stream Line Coordinates, Delays & Speeds */
.stream-line.s-1 { left: 4%; }
.stream-line.s-1::after { animation-duration: 2.8s; animation-delay: 0.2s; height: 90px; }

.stream-line.s-2 { left: 11%; }
.stream-line.s-2::after { 
  animation-duration: 3.6s; 
  animation-delay: 1.4s; 
  height: 140px; 
  background: linear-gradient(180deg, transparent 0%, rgba(139, 92, 246, 0.2) 30%, #8b5cf6 90%, #ffffff 100%);
  box-shadow: 0 0 8px #ffffff, 0 0 16px #8b5cf6, 0 0 30px rgba(139, 92, 246, 0.85);
}

.stream-line.s-3 { left: 18%; }
.stream-line.s-3::after { animation-duration: 2.3s; animation-delay: 0.7s; height: 110px; }

.stream-line.s-4 { left: 26%; }
.stream-line.s-4::after { animation-duration: 4.1s; animation-delay: 2.1s; height: 160px; }

.stream-line.s-5 { left: 34%; }
.stream-line.s-5::after { 
  animation-duration: 2.5s; 
  animation-delay: 0.9s; 
  height: 100px;
  background: linear-gradient(180deg, transparent 0%, rgba(59, 130, 246, 0.2) 30%, #3b82f6 90%, #ffffff 100%);
  box-shadow: 0 0 8px #ffffff, 0 0 16px #3b82f6, 0 0 28px rgba(59, 130, 246, 0.85);
}

.stream-line.s-6 { left: 42%; }
.stream-line.s-6::after { animation-duration: 3.8s; animation-delay: 1.8s; height: 130px; }

.stream-line.s-7 { left: 50%; }
.stream-line.s-7::after { animation-duration: 2.2s; animation-delay: 0.1s; height: 150px; width: 3px; }

.stream-line.s-8 { left: 58%; }
.stream-line.s-8::after { animation-duration: 3.4s; animation-delay: 1.2s; height: 115px; }

.stream-line.s-9 { left: 66%; }
.stream-line.s-9::after { 
  animation-duration: 2.7s; 
  animation-delay: 0.5s; 
  height: 145px;
  background: linear-gradient(180deg, transparent 0%, rgba(139, 92, 246, 0.2) 30%, #8b5cf6 90%, #ffffff 100%);
  box-shadow: 0 0 8px #ffffff, 0 0 16px #8b5cf6, 0 0 30px rgba(139, 92, 246, 0.85);
}

.stream-line.s-10 { left: 74%; }
.stream-line.s-10::after { animation-duration: 4.3s; animation-delay: 2.4s; height: 125px; }

.stream-line.s-11 { left: 81%; }
.stream-line.s-11::after { animation-duration: 2.4s; animation-delay: 0.8s; height: 95px; }

.stream-line.s-12 { left: 88%; }
.stream-line.s-12::after { animation-duration: 3.1s; animation-delay: 1.6s; height: 150px; }

.stream-line.s-13 { left: 94%; }
.stream-line.s-13::after { animation-duration: 2.9s; animation-delay: 0.3s; height: 105px; }

.stream-line.s-14 { left: 98%; }
.stream-line.s-14::after { animation-duration: 3.7s; animation-delay: 2.0s; height: 135px; }

/* ==========================================================================
   KEYFRAME ANIMATIONS (GPU Accelerated Transform Only - 60 FPS)
   ========================================================================== */
@keyframes streamFlowDown {
  0% {
    transform: translateX(-50%) translate3d(0, -160px, 0);
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateX(-50%) translate3d(0, 105vh, 0);
    opacity: 0;
  }
}

@keyframes laserSweep1 {
  0% {
    transform: translate3d(-100%, 0, 0);
    opacity: 0;
  }
  10% {
    opacity: 0.9;
  }
  50% {
    opacity: 1;
  }
  90% {
    opacity: 0.9;
  }
  100% {
    transform: translate3d(100%, 0, 0);
    opacity: 0;
  }
}

@keyframes laserSweep2 {
  0% {
    transform: translate3d(-100%, 0, 0);
    opacity: 0;
  }
  15% {
    opacity: 0.85;
  }
  85% {
    opacity: 0.85;
  }
  100% {
    transform: translate3d(100%, 0, 0);
    opacity: 0;
  }
}

@keyframes waveMotion1 {
  0% { transform: scale(1) translate3d(0, 0, 0); }
  50% { transform: scale(1.12) translate3d(40px, 25px, 0); }
  100% { transform: scale(0.95) translate3d(-30px, 45px, 0); }
}

@keyframes waveMotion2 {
  0% { transform: scale(1) translate3d(0, 0, 0); }
  50% { transform: scale(1.15) translate3d(-50px, -30px, 0); }
  100% { transform: scale(1.05) translate3d(25px, 35px, 0); }
}

@keyframes floatOrb1 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(80px, 60px, 0) scale(1.12); }
  100% { transform: translate3d(-40px, 90px, 0) scale(0.95); }
}

@keyframes floatOrb2 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(-90px, -50px, 0) scale(1.15); }
  100% { transform: translate3d(-30px, 70px, 0) scale(0.92); }
}

@keyframes floatOrb3 {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(60px, -80px, 0) scale(1.08); }
  100% { transform: translate3d(-70px, -30px, 0) scale(1.14); }
}

/* Foreground content wrapper */
.page-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography Helpers */
.text-gradient {
  background: linear-gradient(135deg, #00f2fe 0%, #3b82f6 50%, #a855f7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.text-gradient-gold {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 50%, #d97706 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* ==========================================================================
   HEADER & NAVBAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(7, 10, 20, 0.78);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition);
}

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

.brand-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  gap: 12px;
}

.brand-logo-img {
  height: 38px;
  width: auto;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 24px;
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
  border-radius: 2px;
}

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

.nav-badge {
  display: inline-block;
  font-size: 0.68rem;
  background: rgba(0, 242, 254, 0.15);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.35);
  padding: 1px 6px;
  border-radius: var(--radius-full);
  margin-left: 4px;
  vertical-align: middle;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-full);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  line-height: 1;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, #00f2fe 0%, #2563eb 100%);
  color: #050814;
  font-weight: 700;
  box-shadow: 0 4px 18px rgba(0, 242, 254, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 242, 254, 0.55);
  color: #000000;
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-light);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
}

.btn-outline-primary {
  background: transparent;
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.45);
}

.btn-outline-primary:hover {
  background: rgba(0, 242, 254, 0.12);
  border-color: var(--primary);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.85rem;
}

/* Mobile Menu Toggle */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 6px;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  text-align: center;
  position: relative;
}

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(0, 242, 254, 0.08);
  border: 1px solid rgba(0, 242, 254, 0.25);
  border-radius: var(--radius-full);
  padding: 6px 16px;
  font-size: 0.86rem;
  color: var(--primary);
  margin-bottom: 24px;
  animation: pulsePill 3s infinite alternate;
}

.hero-pill-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 10px #10b981;
}

@keyframes pulsePill {
  0% { border-color: rgba(0, 242, 254, 0.25); box-shadow: 0 0 0 rgba(0, 242, 254, 0); }
  100% { border-color: rgba(0, 242, 254, 0.6); box-shadow: 0 0 18px rgba(0, 242, 254, 0.2); }
}

.hero-title {
  font-size: clamp(2.4rem, 5.2vw, 4.2rem);
  font-weight: 900;
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
  max-width: 980px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
  font-weight: 400;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 50px;
}

/* Hero Stats Counter Grid */
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1040px;
  margin: 0 auto;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 16px;
  text-align: center;
  backdrop-filter: blur(12px);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 242, 254, 0.35);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.stat-value {
  font-size: 2.1rem;
  font-weight: 800;
  color: #ffffff;
  font-family: var(--font-mono);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.stat-label {
  font-size: 0.86rem;
  color: var(--text-muted);
}

/* ==========================================================================
   LIVE REAL-TIME NETWORK LATENCY TICKER
   ========================================================================== */
.latency-ticker-section {
  padding: 20px 0 50px;
}

.latency-ticker-card {
  background: rgba(11, 17, 32, 0.85);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  backdrop-filter: blur(14px);
}

.ticker-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.ticker-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.ticker-status-live {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: var(--success);
  background: rgba(16, 185, 129, 0.1);
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.ticker-nodes-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 12px;
}

.node-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.node-item:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(0, 242, 254, 0.3);
}

.node-name {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
}

.node-ping {
  font-size: 0.82rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--success);
}

/* ==========================================================================
   FEATURE & ADVANTAGE SECTION
   ========================================================================== */
.section-common {
  padding: 80px 0;
  position: relative;
}

.section-head {
  text-align: center;
  margin-bottom: 50px;
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

.section-badge {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  background: rgba(0, 242, 254, 0.1);
  border: 1px solid rgba(0, 242, 254, 0.25);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 14px;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  backdrop-filter: blur(14px);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(0, 242, 254, 0.6), transparent);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 242, 254, 0.35);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
}

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

.feature-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.15) 0%, rgba(59, 130, 246, 0.15) 100%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.6rem;
  color: var(--primary);
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.68;
}

/* ==========================================================================
   STREAMING & AI UNLOCK SHOWCASE
   ========================================================================== */
.unlock-section {
  padding: 40px 0 80px;
}

.unlock-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.unlock-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: var(--transition);
}

.unlock-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 255, 255, 0.2);
  background: var(--bg-card-hover);
}

.unlock-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.unlock-info h4 {
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.unlock-info p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ==========================================================================
   PRICING COMPARISON TABLE ("所有价格要同排" - Side by Side Grid)
   ========================================================================== */
.pricing-section {
  padding: 80px 0 90px;
  position: relative;
}

.pricing-notice {
  text-align: center;
  margin-bottom: 36px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.pricing-notice-highlight {
  color: var(--primary);
  font-weight: 600;
}

/* 3-Column Equal Row Layout for Desktop */
.pricing-row-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-color);
  border-radius: var(--radius-xl);
  padding: 38px 30px;
  backdrop-filter: blur(16px);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  box-shadow: var(--shadow-md);
}

.pricing-card:hover {
  transform: translateY(-8px);
  border-color: rgba(0, 242, 254, 0.4);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6), 0 0 30px rgba(0, 242, 254, 0.2);
}

/* Featured / Most Popular Highlight Card */
.pricing-card.featured {
  background: var(--bg-card-featured);
  border: 2px solid rgba(0, 242, 254, 0.65);
  box-shadow: 0 15px 45px rgba(0, 0, 0, 0.5), 0 0 35px rgba(0, 242, 254, 0.22);
}

.pricing-card.featured:hover {
  border-color: #00f2fe;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7), 0 0 45px rgba(0, 242, 254, 0.35);
}

.pricing-badge-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #00f2fe 0%, #3b82f6 100%);
  color: #050814;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 4px 14px rgba(0, 242, 254, 0.45);
}

.pricing-card-header {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.pricing-tier-name {
  font-size: 1.45rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: #ffffff;
}

.pricing-tier-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  min-height: 40px;
}

.pricing-price-box {
  margin: 20px 0;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.pricing-currency {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary);
}

.pricing-amount {
  font-size: 3.4rem;
  font-weight: 900;
  line-height: 1;
  color: #ffffff;
  font-family: var(--font-mono);
}

.pricing-period {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-billing-alt {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.pricing-billing-alt span {
  display: flex;
  justify-content: space-between;
}

.pricing-billing-alt b {
  color: #ffffff;
}

/* Feature list within card */
.pricing-features {
  list-style: none;
  margin-bottom: 32px;
  display: flex;
  flex-direction: column;
  gap: 13px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #e2e8f0;
}

.pricing-feature-item.highlight {
  font-weight: 600;
  color: var(--primary);
}

.check-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(16, 185, 129, 0.18);
  color: #10b981;
  font-size: 0.75rem;
  font-weight: 800;
  flex-shrink: 0;
}

.pricing-cta-wrap {
  margin-top: auto;
}

.pricing-cta-btn {
  width: 100%;
  padding: 14px 20px;
  font-size: 1rem;
}

/* ==========================================================================
   CLIENT & PLATFORM SUPPORT MATRIX
   ========================================================================== */
.clients-section {
  padding: 60px 0 80px;
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 18px;
}

.client-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px 18px;
  text-align: center;
  transition: var(--transition);
}

.client-card:hover {
  transform: translateY(-4px);
  border-color: rgba(0, 242, 254, 0.3);
  background: var(--bg-card-hover);
}

.client-logo-icon {
  font-size: 2.2rem;
  margin-bottom: 12px;
  display: block;
}

.client-name {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.client-platform {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ==========================================================================
   ARTICLES & SEO KNOWLEDGE HUB (5-8 Articles Preview)
   ========================================================================== */
.articles-hub-section {
  padding: 80px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 26px 24px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.article-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 242, 254, 0.4);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
}

.article-tag-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.article-tag {
  font-size: 0.76rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(0, 242, 254, 0.1);
  color: var(--primary);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.article-tag.alt {
  background: rgba(139, 92, 246, 0.1);
  color: #a78bfa;
  border-color: rgba(139, 92, 246, 0.2);
}

.article-card-title {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: #ffffff;
  transition: var(--transition);
}

.article-card:hover .article-card-title {
  color: var(--primary);
}

.article-card-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.62;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-dim);
}

.article-read-link {
  color: var(--primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   USER REVIEWS / TESTIMONIALS (用户真实评价)
   ========================================================================== */
.testimonials-section {
  padding: 80px 0;
  background: rgba(11, 17, 32, 0.45);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: rgba(255, 255, 255, 0.18);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
}

.review-stars {
  color: #f59e0b;
  font-size: 1rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.93rem;
  color: #e2e8f0;
  line-height: 1.7;
  margin-bottom: 20px;
}

.reviewer-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--border-color);
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(0, 242, 254, 0.2), rgba(139, 92, 246, 0.3));
  border: 1px solid rgba(0, 242, 254, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
  color: #ffffff;
}

.reviewer-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

.reviewer-role {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ==========================================================================
   FAQ ACCORDION SECTION (常见问题解答)
   ========================================================================== */
.faq-section {
  padding: 80px 0;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(255, 255, 255, 0.16);
}

.faq-question {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 22px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.05rem;
  font-weight: 700;
  color: #ffffff;
  cursor: pointer;
  outline: none;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon-arrow {
  font-size: 1.2rem;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  color: var(--text-dim);
}

.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 22px;
}

/* ==========================================================================
   CALL TO ACTION BANNER (BOTTOM)
   ========================================================================== */
.cta-banner-section {
  padding: 60px 0 90px;
}

.cta-banner {
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.95) 0%, rgba(30, 41, 75, 0.95) 100%);
  border: 1px solid rgba(0, 242, 254, 0.4);
  border-radius: var(--radius-xl);
  padding: 60px 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(0, 242, 254, 0.15);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: -50%;
  left: 30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.cta-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 32px;
  position: relative;
  z-index: 1;
}

.cta-btns {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}

/* ==========================================================================
   FRIENDLY EXTERNAL LINKS (外链推荐)
   ========================================================================== */
.friend-links-section {
  padding: 30px 0 50px;
  border-top: 1px solid var(--border-color);
}

.friend-links-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
}

.friend-links-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.friend-link-tag {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.86rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.friend-link-tag:hover {
  color: var(--primary);
  border-color: rgba(0, 242, 254, 0.4);
  background: rgba(0, 242, 254, 0.06);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background: #05070f;
  border-top: 1px solid var(--border-color);
  padding: 60px 0 30px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand-desc {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-dim);
  margin-top: 14px;
  max-width: 340px;
}

.footer-col-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 18px;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-nav-list a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-nav-list a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.84rem;
  color: var(--text-dim);
}

.footer-disclaimer {
  max-width: 800px;
  line-height: 1.6;
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-row-grid {
    grid-template-columns: 1fr;
    max-width: 520px;
    margin: 0 auto;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .unlock-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 600px;
    margin: 0 auto;
  }
  .ticker-nodes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(7, 10, 20, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 24px;
    flex-direction: column;
    align-items: flex-start;
    display: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
  }
  
  .main-nav.show {
    display: flex;
  }
  
  .nav-links {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 16px;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .header-actions {
    display: none;
  }
  
  .hero-section {
    padding: 40px 0;
  }
  
  .hero-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .ticker-nodes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .unlock-grid {
    grid-template-columns: 1fr;
  }
  
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  
  .cta-banner {
    padding: 40px 20px;
  }
}