/* ==========================================================================
   WuXXNet 网络 (wuxxnet.mom) - 全局高性能极简样式表
   零外部依赖 · 纯原生 CSS · GPU 硬件加速动画 · 秒级首屏渲染
   ========================================================================== */

:root {
  --bg-dark: #070b14;
  --bg-card: rgba(14, 23, 38, 0.72);
  --bg-card-hover: rgba(22, 35, 58, 0.85);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(6, 182, 212, 0.4);
  --primary-cyan: #06b6d4;
  --primary-emerald: #10b981;
  --accent-purple: #8b5cf6;
  --accent-amber: #f59e0b;
  --accent-ice-orange: #ff7828;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --gradient-brand: linear-gradient(135deg, #10b981 0%, #00d2d3 36%, #ff9f43 68%, #ff6b22 100%);
  --gradient-glow: linear-gradient(135deg, rgba(16, 185, 129, 0.15), rgba(6, 182, 212, 0.15));
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "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-full: 9999px;
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(6, 182, 212, 0.25);
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  color-scheme: dark;
}

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

/* ==========================================================================
   动态背景系统 (GPU硬件加速光斑 + 科技网格 + 粒子Canvas)
   ========================================================================== */
.dynamic-background {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background: radial-gradient(circle at 50% 0%, #0c162d 0%, #070b14 65%, #04060a 100%);
}

.dynamic-background::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 50px 50px;
  mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 80%);
  -webkit-mask-image: radial-gradient(circle at 50% 30%, black 40%, transparent 80%);
}

.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.35;
  animation: orbDrift 20s infinite alternate ease-in-out;
  transform: translateZ(0);
}

.glow-orb-1 {
  width: 500px;
  height: 500px;
  top: -100px;
  left: 10%;
  background: radial-gradient(circle, #06b6d4, transparent 70%);
  animation-duration: 18s;
}

.glow-orb-2 {
  width: 600px;
  height: 600px;
  top: 35%;
  right: -100px;
  background: radial-gradient(circle, #8b5cf6, transparent 70%);
  animation-duration: 24s;
  animation-delay: -5s;
}

.glow-orb-3 {
  width: 550px;
  height: 550px;
  bottom: 5%;
  left: -50px;
  background: radial-gradient(circle, #10b981, transparent 70%);
  animation-duration: 22s;
  animation-delay: -10s;
}

@keyframes orbDrift {
  0% { transform: translate3d(0, 0, 0) scale(1); }
  50% { transform: translate3d(60px, 40px, 0) scale(1.15); }
  100% { transform: translate3d(-40px, -60px, 0) scale(0.9); }
}

#particleCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}

/* 鸭子巡游距离变量 (随屏幕断点自动适配) */
:root {
  --duck-swim-dist: calc(-100vw + 550px);
}
@media (max-width: 1200px) {
  :root { --duck-swim-dist: calc(-100vw + 470px); }
}
@media (max-width: 900px) {
  :root { --duck-swim-dist: calc(-100vw + 380px); }
}
@media (max-width: 600px) {
  :root { --duck-swim-dist: calc(-100vw + 300px); }
}

/* ==========================================================================
   动态背景：双鸭自由游弋戏水动效系统 (Two Ducks Swimming Back and Forth)
   ========================================================================== */
.bg-ducks-pond {
  position: absolute;
  bottom: 20px;
  right: 25px;
  width: 500px;
  height: 270px;
  z-index: 2;
  pointer-events: none;
  filter: drop-shadow(0 14px 35px rgba(0, 0, 0, 0.7));
  animation: ducksSwimAcross 28s ease-in-out infinite;
  transform-origin: center center;
}

.bg-ducks-svg {
  width: 100%;
  height: 100%;
  display: block;
}

/* 全屏横跨游来游去动效 (从右游到左，欢快嬉水后平滑转身游回) */
@keyframes ducksSwimAcross {
  0% {
    transform: translate3d(0, 0, 0) scaleX(1);
  }
  3% {
    transform: translate3d(0, -5px, 0) scaleX(1);
  }
  14% {
    transform: translate3d(calc(var(--duck-swim-dist) * 0.25), -14px, 0) scaleX(1);
  }
  25% {
    transform: translate3d(calc(var(--duck-swim-dist) * 0.5), 8px, 0) scaleX(1);
  }
  36% {
    transform: translate3d(calc(var(--duck-swim-dist) * 0.78), -10px, 0) scaleX(1);
  }
  44% {
    transform: translate3d(var(--duck-swim-dist), 0px, 0) scaleX(1);
  }
  46% {
    transform: translate3d(var(--duck-swim-dist), -6px, 0) scaleX(1);
  }
  48% {
    transform: translate3d(var(--duck-swim-dist), -2px, 0) scaleX(0.08); /* 平滑3D转身过渡 */
  }
  50% {
    transform: translate3d(var(--duck-swim-dist), 0px, 0) scaleX(-1); /* 完成向右转身 */
  }
  62% {
    transform: translate3d(calc(var(--duck-swim-dist) * 0.75), -12px, 0) scaleX(-1);
  }
  73% {
    transform: translate3d(calc(var(--duck-swim-dist) * 0.5), 10px, 0) scaleX(-1);
  }
  84% {
    transform: translate3d(calc(var(--duck-swim-dist) * 0.22), -8px, 0) scaleX(-1);
  }
  94% {
    transform: translate3d(0, 0px, 0) scaleX(-1);
  }
  96% {
    transform: translate3d(0, -6px, 0) scaleX(-1);
  }
  98% {
    transform: translate3d(0, -2px, 0) scaleX(-0.08); /* 平滑3D转身过渡 */
  }
  100% {
    transform: translate3d(0, 0, 0) scaleX(1);
  }
}

/* 鸭子 1 (元气大黄鸭) 柔和浮水与划水游动 */
.duck-1 {
  transform-origin: 155px 210px;
  animation: duckBob1 3.4s ease-in-out infinite;
}

@keyframes duckBob1 {
  0%, 100% { transform: translate3d(0, 0px, 0) rotate(0deg); }
  25% { transform: translate3d(10px, -10px, 0) rotate(-2.8deg); }
  50% { transform: translate3d(18px, -4px, 0) rotate(-3.5deg); }
  75% { transform: translate3d(8px, -9px, 0) rotate(-1.5deg); }
}

/* 鸭子 2 (戏水小萌鸭) 欢跃戏水追逐对望动效 */
.duck-2 {
  transform-origin: 370px 210px;
  animation: duckBob2 2.8s ease-in-out infinite;
}

@keyframes duckBob2 {
  0%, 100% { transform: translate3d(0, -3px, 0) rotate(2.2deg); }
  30% { transform: translate3d(-18px, 8px, 0) rotate(-3.2deg); }
  60% { transform: translate3d(-8px, 2px, 0) rotate(1.5deg); }
  85% { transform: translate3d(-14px, 9px, 0) rotate(-2deg); }
}

/* 鸭子 1 翅膀拍水 */
.wing-1 {
  transform-origin: 145px 188px;
  animation: wingPaddle1 1.1s ease-in-out infinite;
}

@keyframes wingPaddle1 {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(-16deg); }
}

/* 鸭子 2 翅膀拍水 */
.wing-2 {
  transform-origin: 375px 192px;
  animation: wingPaddle2 0.9s ease-in-out infinite;
}

@keyframes wingPaddle2 {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(18deg); }
}

/* 萌萌翘尾巴摇摆动效 */
.duck-tail {
  transform-origin: center;
  animation: tailWiggle 1.8s ease-in-out infinite;
}

@keyframes tailWiggle {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(5deg); }
}

/* 萌眼灵动眨眼动效 */
.duck-eye {
  transform-origin: center;
  animation: duckEyeBlink 3.6s ease-in-out infinite;
}

@keyframes duckEyeBlink {
  0%, 93%, 100% { transform: scaleY(1); }
  96% { transform: scaleY(0.1); }
}

/* 水波涟漪同心圆扩散 */
.ripple-1, .ripple-3 {
  transform-origin: center;
  animation: ripplePulse 2.4s ease-out infinite;
}

.ripple-2, .ripple-4 {
  transform-origin: center;
  animation: ripplePulse 2.4s ease-out infinite 1.2s;
}

@keyframes ripplePulse {
  0% { transform: scale(0.7); opacity: 0.95; }
  100% { transform: scale(1.4); opacity: 0; }
}

/* 爱心戏水水花漂浮 */
.splash-heart {
  animation: heartSplash 2.2s ease-out infinite;
}

@keyframes heartSplash {
  0% { transform: translateY(0) scale(0.5); opacity: 0; }
  35% { opacity: 0.9; }
  100% { transform: translateY(-26px) scale(1.15); opacity: 0; }
}

/* 晶亮水滴飞溅 */
.splash-1 { animation: waterSplash 1.6s ease-out infinite 0.1s; }
.splash-2 { animation: waterSplash 1.6s ease-out infinite 0.35s; }
.splash-3 { animation: waterSplash 1.6s ease-out infinite 0.65s; }
.splash-4 { animation: waterSplash 1.6s ease-out infinite 0.2s; }
.splash-5 { animation: waterSplash 1.6s ease-out infinite 0.85s; }
.splash-6 { animation: waterSplash 1.6s ease-out infinite 0.5s; }
.splash-7 { animation: waterSplash 1.6s ease-out infinite 1.05s; }

@keyframes waterSplash {
  0% { transform: translateY(0) scale(0.3); opacity: 0; }
  30% { opacity: 1; }
  100% { transform: translateY(-22px) scale(1.1); opacity: 0; }
}

/* 水花闪耀星芒闪烁 */
.splash-sparkle {
  animation: sparkleBlink 1.8s ease-in-out infinite;
}

@keyframes sparkleBlink {
  0%, 100% { opacity: 0; transform: scale(0.5) rotate(0deg); }
  50% { opacity: 1; transform: scale(1.2) rotate(45deg); }
}

/* 琉璃水面微波荡漾 */
.water-waves-back {
  animation: waveMotion 4.2s ease-in-out infinite alternate;
}

.water-waves-front {
  animation: waveMotion 3.4s ease-in-out infinite alternate-reverse;
}

@keyframes waveMotion {
  0% { transform: translateX(0); }
  100% { transform: translateX(-15px); }
}

/* 梦幻气泡轻缓上浮 */
.bubble-1 { animation: bubbleUp 3.2s ease-in infinite 0.2s; }
.bubble-2 { animation: bubbleUp 2.7s ease-in infinite 1.1s; }
.bubble-3 { animation: bubbleUp 3.6s ease-in infinite 1.9s; }

@keyframes bubbleUp {
  0% { transform: translateY(0); opacity: 0; }
  30% { opacity: 0.85; }
  100% { transform: translateY(-34px); opacity: 0; }
}

/* 响应式断点适配 */
@media (max-width: 1200px) {
  .bg-ducks-pond {
    width: 420px;
    height: 226px;
    right: 20px;
    bottom: 16px;
  }
}

@media (max-width: 900px) {
  .bg-ducks-pond {
    width: 330px;
    height: 178px;
    right: 15px;
    bottom: 12px;
    opacity: 0.92;
  }
}

@media (max-width: 600px) {
  .bg-ducks-pond {
    width: 260px;
    height: 140px;
    right: 10px;
    bottom: 8px;
    opacity: 0.85;
  }
}

/* ==========================================================================
   排版与通用组件
   ========================================================================== */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: 20px;
}

.container-wide {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: 20px;
}

.text-gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 50px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-brand {
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.3);
  color: var(--primary-cyan);
}

.badge-emerald {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  color: var(--primary-emerald);
}

.badge-purple {
  background: rgba(139, 92, 246, 0.12);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: var(--accent-purple);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 12px 0 16px;
  line-height: 1.25;
}

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

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(6, 182, 212, 0.2), 0 4px 20px rgba(255, 107, 34, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(6, 182, 212, 0.28), 0 8px 30px rgba(255, 107, 34, 0.55);
  filter: brightness(1.08);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   顶部导航栏 (带左侧 Logo + 导航链接 + 立即注册按钮)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 11, 20, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  transition: background var(--transition-fast);
}

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

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

.brand-logo-img {
  height: 44px;
  width: auto;
  max-width: 250px;
  object-fit: contain;
  filter: drop-shadow(0 2px 8px rgba(6, 182, 212, 0.3));
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary-cyan);
}

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

.menu-toggle-btn {
  display: none;
  background: transparent;
  border: 1px solid var(--border-subtle);
  color: var(--text-main);
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

/* ==========================================================================
   Hero 主屏横幅
   ========================================================================== */
.hero-section {
  padding: 70px 0 60px;
  position: relative;
  text-align: center;
}

.hero-notice-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-notice-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary-emerald);
  box-shadow: 0 0 10px var(--primary-emerald);
}

.hero-title {
  font-size: clamp(1.85rem, 2.65vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.025em;
  line-height: 1.28;
  max-width: 1240px;
  margin: 0 auto 24px;
}

.hero-subline {
  display: inline-block;
  white-space: nowrap;
}

.nowrap-phrase {
  white-space: nowrap;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-trust-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
  font-size: 0.86rem;
  color: var(--text-dim);
  border-top: 1px solid var(--border-subtle);
  padding-top: 28px;
  max-width: 850px;
  margin: 0 auto;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.trust-item svg {
  color: var(--primary-emerald);
}

/* ==========================================================================
   核心特色矩阵 (Features)
   ========================================================================== */
.features-section {
  padding: 70px 0;
}

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

.feature-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-focus);
  box-shadow: var(--shadow-glow);
  background: var(--bg-card-hover);
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-cyan);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

/* ==========================================================================
   所有价格同排展示区 (Pricing - 核心要求：所有价格同排)
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
  position: relative;
}

/* 同排横向网格：桌面端 6 列同排横跨 */
.pricing-horizontal-wrapper {
  width: 100%;
  overflow-x: auto;
  padding-bottom: 20px;
  scrollbar-width: thin;
  scrollbar-color: var(--primary-cyan) rgba(255, 255, 255, 0.05);
}

.pricing-horizontal-wrapper::-webkit-scrollbar {
  height: 6px;
}

.pricing-horizontal-wrapper::-webkit-scrollbar-thumb {
  background: var(--primary-cyan);
  border-radius: 4px;
}

.pricing-horizontal-row {
  display: grid;
  grid-template-columns: repeat(6, minmax(200px, 1fr));
  gap: 16px;
  min-width: 1180px; /* 保证即便窗口缩小时也维持横排，可横向平滑滚动查看 */
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  transition: all var(--transition-fast);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45), 0 0 20px rgba(6, 182, 212, 0.2);
}

.pricing-card.featured {
  border: 2px solid var(--primary-cyan);
  background: linear-gradient(180deg, rgba(6, 182, 212, 0.12) 0%, rgba(14, 23, 38, 0.85) 100%);
  box-shadow: 0 0 25px rgba(6, 182, 212, 0.28);
}

.pricing-card.featured::after {
  content: "最具性价比";
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #ffffff;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 12px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.card-top-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--primary-cyan);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.plan-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 4px;
}

.plan-subtext {
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 16px;
  min-height: 34px;
  line-height: 1.35;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  gap: 3px;
  margin-bottom: 8px;
}

.price-currency {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--primary-cyan);
}

.price-number {
  font-size: 2.3rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1;
}

.price-unit {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.plan-traffic-badge {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
  font-size: 0.82rem;
  color: var(--primary-emerald);
  font-weight: 700;
  text-align: center;
  margin-bottom: 18px;
}

.plan-per-month-hint {
  font-size: 0.74rem;
  color: var(--accent-amber);
  margin-top: 4px;
  display: block;
}

.plan-specs-list {
  list-style: none;
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
  flex-grow: 1;
}

.plan-specs-list li {
  display: flex;
  align-items: flex-start;
  gap: 7px;
  line-height: 1.4;
}

.plan-specs-list li svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--primary-emerald);
}

.pricing-notes {
  margin-top: 24px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

/* ==========================================================================
   测速与节点分布展示 (Speed & Nodes)
   ========================================================================== */
.speed-section {
  padding: 60px 0;
}

.nodes-monitor-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(12px);
}

.monitor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 18px;
  margin-bottom: 20px;
}

.monitor-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
}

.pulse-indicator {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--primary-emerald);
  box-shadow: 0 0 10px var(--primary-emerald);
  animation: pulseLight 1.8s infinite;
}

@keyframes pulseLight {
  0% { transform: scale(0.95); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.95); opacity: 0.8; }
}

.nodes-table-responsive {
  overflow-x: auto;
}

.nodes-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.nodes-table th {
  color: var(--text-dim);
  font-weight: 600;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
}

.nodes-table td {
  padding: 14px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  color: var(--text-muted);
}

.node-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-main);
  font-weight: 600;
}

.flag-icon {
  font-size: 1.15rem;
}

.speed-tag {
  color: var(--primary-emerald);
  font-weight: 700;
  font-family: var(--font-mono);
}

.loss-zero {
  color: var(--primary-cyan);
  font-weight: 700;
  font-family: var(--font-mono);
}

/* ==========================================================================
   精选文章推荐 (Internal Linking & SEO)
   ========================================================================== */
.articles-section {
  padding: 70px 0;
}

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

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

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-cyan);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.4);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.78rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}

.article-card h3 {
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.45;
  margin-bottom: 10px;
}

.article-excerpt {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
}

.article-link-action {
  font-size: 0.84rem;
  color: var(--primary-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* ==========================================================================
   用户真实评价 (Reviews)
   ========================================================================== */
.reviews-section {
  padding: 70px 0;
}

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

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  backdrop-filter: blur(12px);
}

.review-stars {
  color: var(--accent-amber);
  font-size: 1.1rem;
  margin-bottom: 14px;
  letter-spacing: 2px;
}

.review-text {
  font-size: 0.94rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 12px;
}

.avatar-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.2), rgba(139, 92, 246, 0.2));
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary-cyan);
  font-size: 0.9rem;
}

.reviewer-name {
  font-weight: 700;
  font-size: 0.92rem;
}

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

/* ==========================================================================
   常见问题 FAQ (Accordion)
   ========================================================================== */
.faq-section {
  padding: 70px 0 90px;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

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

.faq-item.active {
  border-color: rgba(6, 182, 212, 0.4);
}

.faq-question-btn {
  width: 100%;
  padding: 20px 24px;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.02rem;
  font-weight: 700;
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
  font-family: inherit;
}

.faq-question-btn svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.active .faq-question-btn svg {
  transform: rotate(180deg);
  color: var(--primary-cyan);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out, padding 0.3s ease-out;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 22px;
}

/* ==========================================================================
   CTA 横幅 (Call to Action)
   ========================================================================== */
.cta-banner-section {
  padding: 50px 0 80px;
}

.cta-banner-box {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.15) 0%, rgba(139, 92, 246, 0.15) 100%);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-lg);
  padding: 50px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.cta-banner-box h2 {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-banner-box p {
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto 30px;
  font-size: 1.05rem;
}

/* ==========================================================================
   页脚与权威外链 (Footer & Authority Links)
   ========================================================================== */
.site-footer {
  background: #04070d;
  border-top: 1px solid var(--border-subtle);
  padding: 60px 0 30px;
  font-size: 0.88rem;
  color: var(--text-dim);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  margin-top: 16px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-heading {
  color: var(--text-main);
  font-size: 0.96rem;
  font-weight: 700;
  margin-bottom: 18px;
}

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

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

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

.footer-bottom-bar {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 25px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

/* ==========================================================================
   响应式断点适配
   ========================================================================== */
@media (max-width: 1024px) {
  .features-grid,
  .articles-grid,
  .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 992px) {
  .hero-subline {
    white-space: normal;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: 1.85rem;
    line-height: 1.35;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .nav-links {
    display: none;
  }
  .nav-links.mobile-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #070b14;
    padding: 24px;
    border-bottom: 1px solid var(--border-subtle);
    gap: 18px;
  }
  .menu-toggle-btn {
    display: block;
  }
  .features-grid,
  .articles-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom-bar {
    flex-direction: column;
    text-align: center;
  }
}