/* ==========================================================================
   闪电机场 ShanDianJiChang - 赛博朋克光纤隧道原生样式表
   风格：光纤隧道 + 数据穿越 + 赛博科技
   配色：#0F0820 (暗紫黑) | #EC4899 (光纤粉) | #22D3EE (数据青)
   字体：Space Grotesk (大标题 700) | Inter / 思源黑体 (正文)
   ========================================================================== */

:root {
  --bg-primary: #0F0820;
  --bg-secondary: #160D2E;
  --bg-card: rgba(26, 16, 48, 0.72);
  --bg-card-hover: rgba(36, 22, 66, 0.88);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-pink: rgba(236, 72, 153, 0.35);
  --border-cyan: rgba(34, 211, 238, 0.35);
  
  --color-pink: #EC4899;
  --color-cyan: #22D3EE;
  --text-main: #FFFFFF;
  --text-muted: rgba(255, 255, 255, 0.8);
  --text-dim: rgba(255, 255, 255, 0.65);
  
  --gradient-cyber: linear-gradient(135deg, #EC4899 0%, #22D3EE 100%);
  --gradient-card: linear-gradient(180deg, rgba(236, 72, 153, 0.08) 0%, rgba(34, 211, 238, 0.04) 100%);
  
  --btn-glow-pink: 0 0 30px rgba(236, 72, 153, 0.6);
  --btn-glow-cyan: 0 0 30px rgba(34, 211, 238, 0.85);
  
  --radius-btn: 12px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition: all 0.28s cubic-bezier(0.4, 0, 0.2, 1);
  --container-max: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Source Han Sans SC", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: var(--bg-primary);
  position: relative;
}

/* ================= 背景动效：网格 + 2个呼吸光晕 + 20条光纤线条 ================= */
.cyber-bg-layer {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* 细网格线 + Radial Mask 让边缘渐隐 */
.cyber-grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(to right, rgba(34, 211, 238, 0.06) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(236, 72, 153, 0.06) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse 80% 65% at 50% 50%, #000 35%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 65% at 50% 50%, #000 35%, transparent 100%);
}

/* 2 个粉/青大型 blur 光晕缓慢呼吸缩放 */
.glow-orb-pink {
  position: absolute;
  top: -100px;
  left: 5%;
  width: 580px;
  height: 580px;
  background: radial-gradient(circle, rgba(236, 72, 153, 0.22) 0%, transparent 68%);
  filter: blur(90px);
  border-radius: 50%;
  animation: orbPulsePink 9s ease-in-out infinite alternate;
}

.glow-orb-cyan {
  position: absolute;
  top: 45%;
  right: -80px;
  width: 620px;
  height: 620px;
  background: radial-gradient(circle, rgba(34, 211, 238, 0.18) 0%, transparent 70%);
  filter: blur(100px);
  border-radius: 50%;
  animation: orbPulseCyan 11s ease-in-out infinite alternate;
}

@keyframes orbPulsePink {
  0% { transform: scale(0.9) translate(0, 0); opacity: 0.7; }
  100% { transform: scale(1.22) translate(30px, 40px); opacity: 1; }
}

@keyframes orbPulseCyan {
  0% { transform: scale(1.15) translate(0, 0); opacity: 0.65; }
  100% { transform: scale(0.88) translate(-40px, -30px); opacity: 0.95; }
}

/* 20 条粉/青色光纤线条：斜向下穿过屏幕到底部（1~2.5秒一周期，角度各异 ±30°，带辉光阴影） */
.fiber-lines-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.fiber-line {
  position: absolute;
  top: -150px;
  width: 2px;
  height: 140px;
  border-radius: 999px;
  opacity: 0;
  animation: fiberShoot var(--dur) linear infinite;
  animation-delay: var(--delay);
  transform-origin: center top;
}

@keyframes fiberShoot {
  0% {
    transform: translateY(0) rotate(var(--angle));
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 0.9;
  }
  100% {
    transform: translateY(115vh) rotate(var(--angle));
    opacity: 0;
  }
}

/* 20 条线条个性化配置：粉/青交替、1~2.5s周期、角度各异 ±30°、强辉光阴影 */
.fiber-line:nth-child(1)  { left: 3%;  --angle: 18deg;  --dur: 1.2s; --delay: 0.1s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(2)  { left: 9%;  --angle: -22deg; --dur: 2.1s; --delay: 0.8s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(3)  { left: 14%; --angle: 12deg;  --dur: 1.6s; --delay: 0.3s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(4)  { left: 19%; --angle: -28deg; --dur: 2.4s; --delay: 1.2s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(5)  { left: 25%; --angle: 25deg;  --dur: 1.4s; --delay: 0.5s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(6)  { left: 31%; --angle: -15deg; --dur: 1.9s; --delay: 1.5s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(7)  { left: 37%; --angle: 8deg;   --dur: 2.2s; --delay: 0.2s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(8)  { left: 42%; --angle: -24deg; --dur: 1.3s; --delay: 0.9s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(9)  { left: 48%; --angle: 20deg;  --dur: 1.7s; --delay: 0.4s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(10) { left: 54%; --angle: -10deg; --dur: 2.5s; --delay: 1.4s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(11) { left: 59%; --angle: 27deg;  --dur: 1.5s; --delay: 0.7s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(12) { left: 65%; --angle: -18deg; --dur: 2.0s; --delay: 1.1s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(13) { left: 71%; --angle: 14deg;  --dur: 1.1s; --delay: 0.3s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(14) { left: 76%; --angle: -26deg; --dur: 1.8s; --delay: 1.6s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(15) { left: 81%; --angle: 22deg;  --dur: 2.3s; --delay: 0.6s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(16) { left: 86%; --angle: -12deg; --dur: 1.4s; --delay: 0.2s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(17) { left: 91%; --angle: 29deg;  --dur: 2.1s; --delay: 1.3s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(18) { left: 95%; --angle: -20deg; --dur: 1.6s; --delay: 0.9s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }
.fiber-line:nth-child(19) { left: 6%;  --angle: 16deg;  --dur: 1.8s; --delay: 1.7s; background: linear-gradient(to bottom, transparent, #EC4899); box-shadow: 0 0 14px #EC4899, 0 0 28px #EC4899; }
.fiber-line:nth-child(20) { left: 88%; --angle: -16deg; --dur: 2.0s; --delay: 0.4s; background: linear-gradient(to bottom, transparent, #22D3EE); box-shadow: 0 0 14px #22D3EE, 0 0 28px #22D3EE; }

/* ================= 容器与版心 ================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

/* ================= 导航条 ================= */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(15, 8, 32, 0.85);
  border-bottom: 1px solid rgba(236, 72, 153, 0.2);
}

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

.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(236, 72, 153, 0.15);
  border: 1px solid var(--color-pink);
  border-radius: var(--radius-btn);
  color: var(--color-pink);
  box-shadow: 0 0 15px rgba(236, 72, 153, 0.4);
}

.brand-en {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.95rem;
  color: var(--color-cyan);
  font-weight: 700;
  margin-left: 4px;
}

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

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-cyan);
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
}

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

/* ================= CTA 按钮规范：粉到青渐变，圆角12px，带30px粉色辉光，hover变青 ================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 24px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-btn); /* 严格圆角 12px */
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  min-height: 44px;
}

.btn-primary {
  background: var(--gradient-cyber);
  color: #FFFFFF;
  box-shadow: var(--btn-glow-pink); /* 严格带 30px 粉色辉光 */
}

.btn-primary:hover {
  box-shadow: var(--btn-glow-cyan); /* hover 时辉光变青 */
  transform: translateY(-2px);
  filter: brightness(1.15);
}

.btn-outline {
  background: rgba(34, 211, 238, 0.06);
  color: var(--text-main);
  border: 1px solid var(--border-cyan);
  border-radius: var(--radius-btn);
}

.btn-outline:hover {
  background: rgba(34, 211, 238, 0.15);
  border-color: var(--color-cyan);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.4);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.05rem;
  min-height: 52px;
}

/* ================= 主视觉区 (Hero Section) ================= */
.hero-section {
  padding: 60px 0 50px;
}

/* 大标题布局：左侧 H1 及文本，右侧 3D 光纤隧道动画 */
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 40px;
  margin-bottom: 50px;
}

.hero-left {
  text-align: left;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(236, 72, 153, 0.12);
  border: 1px solid var(--border-pink);
  border-radius: var(--radius-full);
  color: var(--color-pink);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
  box-shadow: 0 0 15px rgba(236, 72, 153, 0.25);
}

/* 大标题：Space Grotesk, 700字重，粉到青渐变 + 双层文字阴影 */
.hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: clamp(2.4rem, 4.2vw, 3.8rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 14px;
}

.cyber-title {
  background: var(--gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  /* 双层文字辉光阴影 */
  filter: drop-shadow(0 0 15px rgba(236, 72, 153, 0.55)) drop-shadow(0 0 35px rgba(34, 211, 238, 0.45));
}

.hero-tagline {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-cyan);
  margin-bottom: 20px;
  letter-spacing: 0.02em;
  text-shadow: 0 0 12px rgba(34, 211, 238, 0.5);
}

/* 主视觉区详细平台简介 */
.hero-intro-box {
  margin-bottom: 30px;
  padding: 20px 24px;
  background: rgba(22, 13, 46, 0.7);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--color-pink);
  border-radius: var(--radius-btn);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35);
}

.intro-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-pink);
  background: rgba(236, 72, 153, 0.12);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  margin-bottom: 10px;
}

.hero-subtitle {
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--text-muted);
}

.hero-subtitle strong {
  color: #FFFFFF;
}

.hero-buttons {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* ================= 右侧 3D 光纤隧道透视动效 =================
   5 层不同大小不同 Z 轴深度的圆环（粉/青交替，每个带辉光阴影），整体在 Y 轴 360° 旋转（12 秒一周期）
   3 个粉/青发光数据流粒子（2 秒一周期缩放飞逝）
   中心 60×100px 闪电符号 SVG，2 秒触发放电动画
============================================================= */
.hero-right {
  display: flex;
  align-items: center;
  justify-content: center;
}

.fiber-tunnel-wrapper {
  position: relative;
  width: 360px;
  max-width: 100%;
  height: 360px;
  display: flex;
  align-items: center;
  justify-content: center;
  perspective: 900px; /* 3D 透视视距 */
}

.tunnel-stage {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-style: preserve-3d;
}

/* 5 层圆环容器：在 Y 轴 360° 旋转（12 秒一周期） */
.tunnel-rings {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-style: preserve-3d;
  animation: tunnelRotateY 12s linear infinite;
}

@keyframes tunnelRotateY {
  0% {
    transform: rotateY(0deg) rotateX(15deg);
  }
  100% {
    transform: rotateY(360deg) rotateX(15deg);
  }
}

.ring {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
}

/* 5 层不同大小不同 Z 轴深度圆环，粉/青交替，带辉光阴影 */
.ring-1 {
  width: 300px;
  height: 300px;
  border: 2px solid var(--color-pink);
  box-shadow: 0 0 25px var(--color-pink), inset 0 0 15px var(--color-pink);
  transform: translateZ(90px);
}

.ring-2 {
  width: 240px;
  height: 240px;
  border: 2px solid var(--color-cyan);
  box-shadow: 0 0 25px var(--color-cyan), inset 0 0 15px var(--color-cyan);
  transform: translateZ(45px);
}

.ring-3 {
  width: 180px;
  height: 180px;
  border: 2px solid var(--color-pink);
  box-shadow: 0 0 20px var(--color-pink), inset 0 0 12px var(--color-pink);
  transform: translateZ(0px);
}

.ring-4 {
  width: 125px;
  height: 125px;
  border: 2px solid var(--color-cyan);
  box-shadow: 0 0 18px var(--color-cyan), inset 0 0 10px var(--color-cyan);
  transform: translateZ(-45px);
}

.ring-5 {
  width: 75px;
  height: 75px;
  border: 2px solid var(--color-pink);
  box-shadow: 0 0 15px var(--color-pink), inset 0 0 8px var(--color-pink);
  transform: translateZ(-90px);
}

/* 隧道中 3 个粉/青发光数据流粒子（2 秒一周期，缩放变化模拟透视远近穿梭） */
.tunnel-particles {
  position: absolute;
  inset: 0;
  transform-style: preserve-3d;
  pointer-events: none;
}

.particle {
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 50%;
}

/* 粒子 1：粉色，从远端飞向近端 */
.particle-1 {
  width: 14px;
  height: 14px;
  background: var(--color-pink);
  box-shadow: 0 0 20px var(--color-pink), 0 0 40px var(--color-pink);
  animation: particleFlyForward 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
}

/* 粒子 2：青色，从近端飞向远端 */
.particle-2 {
  width: 12px;
  height: 12px;
  background: var(--color-cyan);
  box-shadow: 0 0 20px var(--color-cyan), 0 0 40px var(--color-cyan);
  animation: particleFlyBackward 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  animation-delay: 0.7s;
}

/* 粒子 3：粉青辉光，从远端飞向近端 */
.particle-3 {
  width: 16px;
  height: 16px;
  background: #FFFFFF;
  box-shadow: 0 0 25px var(--color-cyan), 0 0 45px var(--color-pink);
  animation: particleFlyForward 2s cubic-bezier(0.4, 0, 0.2, 1) infinite;
  animation-delay: 1.35s;
}

@keyframes particleFlyForward {
  0% {
    transform: translate(-50%, -50%) translateZ(-160px) scale(0.25);
    opacity: 0;
  }
  30% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) translateZ(160px) scale(1.6);
    opacity: 0;
  }
}

@keyframes particleFlyBackward {
  0% {
    transform: translate(-50%, -50%) translateZ(150px) scale(1.5);
    opacity: 0;
  }
  25% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translate(-50%, -50%) translateZ(-160px) scale(0.2);
    opacity: 0;
  }
}

/* 隧道中心：60×100px 闪电符号 SVG，粉到青渐变 + 白色描边 + 双层辉光，每 2 秒触发放电动画 */
.tunnel-lightning {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: lightningDischarge 2s ease-in-out infinite;
}

@keyframes lightningDischarge {
  0%, 100% {
    transform: translate(-50%, -50%) scale(1);
    opacity: 0.88;
    filter: drop-shadow(0 0 10px var(--color-pink)) drop-shadow(0 0 20px var(--color-cyan));
  }
  50% {
    transform: translate(-50%, -50%) scale(1.22);
    opacity: 1;
    filter: drop-shadow(0 0 25px var(--color-pink)) drop-shadow(0 0 45px var(--color-cyan)) brightness(1.4);
  }
  55% {
    transform: translate(-50%, -50%) scale(0.95);
    opacity: 0.7;
  }
  60% {
    transform: translate(-50%, -50%) scale(1.15);
    opacity: 1;
  }
}

/* ================= 核心指标统计 ================= */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-pink);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.9rem;
  font-weight: 700;
  color: var(--color-cyan);
  text-shadow: 0 0 15px rgba(34, 211, 238, 0.6);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ================= 通用区块头部 ================= */
.section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
}

.section-alt {
  background: rgba(22, 13, 46, 0.55);
  border-top: 1px solid rgba(236, 72, 153, 0.15);
  border-bottom: 1px solid rgba(34, 211, 238, 0.15);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 50px;
}

.section-tag {
  display: inline-block;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-cyan);
  letter-spacing: 0.12em;
  margin-bottom: 10px;
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.5);
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ================= 核心优势 (3个图文卡片) ================= */
.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: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-cyber);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--color-cyan);
  background: var(--bg-card-hover);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(34, 211, 238, 0.2);
}

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

.feature-icon-wrapper {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-btn);
  background: rgba(34, 211, 238, 0.1);
  border: 1px solid var(--border-cyan);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan);
  margin-bottom: 24px;
  box-shadow: 0 0 15px rgba(34, 211, 238, 0.3);
}

.feature-card:nth-child(1) .feature-icon-wrapper {
  background: rgba(236, 72, 153, 0.12);
  border-color: var(--border-pink);
  color: var(--color-pink);
  box-shadow: 0 0 15px rgba(236, 72, 153, 0.35);
}

.feature-card:nth-child(3) .feature-icon-wrapper {
  background: rgba(236, 72, 153, 0.12);
  border-color: var(--border-pink);
  color: var(--color-pink);
  box-shadow: 0 0 15px rgba(236, 72, 153, 0.35);
}

.feature-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.feature-highlights {
  list-style: none;
  border-top: 1px solid var(--border-color);
  padding-top: 16px;
}

.feature-highlights li {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.feature-highlights li svg {
  color: var(--color-cyan);
  flex-shrink: 0;
}

/* ================= 流媒体与 AI 支持图卡 ================= */
.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.support-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
}

.support-card:hover {
  border-color: var(--border-cyan);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(34, 211, 238, 0.15);
}

.support-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.support-header-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-btn);
  display: flex;
  align-items: center;
  justify-content: center;
}

.support-header-text h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
}

.support-header-text p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.support-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.app-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-main);
  transition: var(--transition);
}

.app-pill:hover {
  background: rgba(34, 211, 238, 0.08);
  border-color: var(--color-cyan);
  box-shadow: 0 0 10px rgba(34, 211, 238, 0.3);
}

.app-pill span.dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-cyan);
  box-shadow: 0 0 8px var(--color-cyan);
}

.support-desc {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ================= 套餐价格对比表 ================= */
.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-color);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-cyan);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 25px rgba(34, 211, 238, 0.15);
}

.pricing-card.featured {
  border: 2px solid var(--color-pink);
  background: linear-gradient(180deg, rgba(236, 72, 153, 0.12) 0%, rgba(22, 13, 46, 0.9) 100%);
  box-shadow: 0 0 35px rgba(236, 72, 153, 0.35);
}

.featured-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-cyber);
  color: #FFFFFF;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 18px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap;
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.6);
}

.plan-name {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.plan-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 28px;
}

.currency {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-pink);
}

.amount {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
  color: #FFFFFF;
}

.period {
  font-size: 0.9rem;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin-bottom: 32px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.plan-features li.active {
  color: var(--text-main);
}

.plan-features li svg {
  color: var(--color-cyan);
  flex-shrink: 0;
}

.plan-btn {
  width: 100%;
}

/* ================= 用户评价 ================= */
.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;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-rating {
  color: var(--color-pink);
  text-shadow: 0 0 10px rgba(236, 72, 153, 0.5);
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.testimonial-content {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.65;
  margin-bottom: 20px;
}

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

.avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: rgba(236, 72, 153, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-cyan);
  border: 1px solid var(--border-cyan);
}

.author-info h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 0.92rem;
  font-weight: 700;
}

.author-info p {
  font-size: 0.78rem;
  color: var(--text-dim);
}

/* ================= 常见问题 (FAQ - 原生纯 CSS Details) ================= */
.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.faq-item:hover {
  border-color: var(--border-cyan);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
}

.faq-summary {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  list-style: none;
  user-select: none;
}

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

.faq-arrow {
  color: var(--color-cyan);
  transition: transform 0.3s ease;
}

details[open] .faq-arrow {
  transform: rotate(180deg);
  color: var(--color-pink);
}

details[open] {
  border-color: var(--border-pink);
  box-shadow: 0 0 25px rgba(236, 72, 153, 0.2);
}

.faq-answer {
  padding: 0 24px 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 16px;
}

/* ================= 呼吁转化 CTA 横幅 ================= */
.cta-banner {
  background: linear-gradient(135deg, rgba(36, 22, 66, 0.85) 0%, rgba(15, 8, 32, 0.95) 100%);
  border: 1px solid var(--border-pink);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  box-shadow: 0 0 40px rgba(236, 72, 153, 0.3);
  margin-top: 40px;
}

.cta-banner h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-banner p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 30px;
}

/* ================= 页脚 (严格规范：只保留四个标题) ================= */
.footer {
  margin-top: auto;
  background: #0B0517;
  border-top: 1px solid rgba(236, 72, 153, 0.2);
  padding: 40px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.footer-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: var(--transition);
  padding: 6px 0;
}

.footer-nav a:hover {
  color: var(--color-cyan);
  text-shadow: 0 0 10px rgba(34, 211, 238, 0.6);
}

/* ================= 子页面专用排版 ================= */
.page-container {
  max-width: 860px;
  margin: 40px auto 80px;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.page-header {
  margin-bottom: 40px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 24px;
}

.page-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2.3rem;
  font-weight: 700;
  margin-bottom: 12px;
  background: var(--gradient-cyber);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 15px rgba(236, 72, 153, 0.4));
}

.page-meta {
  color: var(--text-dim);
  font-size: 0.88rem;
}

.page-body {
  color: #e2e8f0;
  line-height: 1.8;
  font-size: 1rem;
}

.page-body h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  color: #fff;
  margin: 36px 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.page-body h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 18px;
  background: var(--color-pink);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--color-pink);
}

.page-body p {
  margin-bottom: 16px;
}

.page-body ul {
  padding-left: 20px;
  margin-bottom: 20px;
}

.page-body li {
  margin-bottom: 8px;
}

.page-callout {
  background: rgba(236, 72, 153, 0.1);
  border-left: 4px solid var(--color-pink);
  padding: 16px 20px;
  border-radius: 0 var(--radius-btn) var(--radius-btn) 0;
  margin: 24px 0;
  color: #fce7f3;
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.15);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-cyan);
  text-decoration: none;
  font-size: 0.95rem;
  margin-bottom: 24px;
  transition: var(--transition);
}

.back-link:hover {
  color: #fff;
  text-shadow: 0 0 10px var(--color-cyan);
  transform: translateX(-4px);
}

/* ================= 9篇 SEO 专栏文章卡片 3x3 网格排版 ================= */
.page-container.wiki-container {
  max-width: var(--container-max); /* 1200px 宽屏完美容纳 3x3 九宫格 */
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 严格 3x3 九宫格排版 */
  gap: 24px;
  margin: 32px 0 45px;
}

.article-card {
  background: rgba(22, 13, 46, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-cyan);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4), 0 0 18px rgba(34, 211, 238, 0.2);
}

.article-tag {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-pink);
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.article-card-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.08rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
}

.article-card-title a {
  color: #FFFFFF;
  text-decoration: none;
  transition: var(--transition);
}

.article-card-title a:hover {
  color: var(--color-cyan);
  text-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
}

.article-card-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.article-read-link {
  color: var(--color-cyan);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.article-read-link:hover {
  color: #FFFFFF;
  text-shadow: 0 0 8px var(--color-cyan);
}

/* ================= 文章内专属 FAQ 常见问题模块 ================= */
.article-faq {
  margin: 36px 0 24px;
  border-top: 1px solid var(--border-color);
  padding-top: 28px;
}

.article-faq-item {
  background: rgba(22, 13, 46, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  margin-bottom: 14px;
  overflow: hidden;
  transition: var(--transition);
}

.article-faq-item:hover {
  border-color: var(--border-cyan);
}

.article-faq-item summary {
  padding: 16px 20px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  list-style: none;
  color: #FFFFFF;
  user-select: none;
}

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

.article-faq-item summary span.faq-q-icon {
  color: var(--color-pink);
  margin-right: 8px;
  font-weight: 700;
}

.article-faq-item[open] {
  border-color: var(--color-cyan);
  box-shadow: 0 0 18px rgba(34, 211, 238, 0.15);
}

.article-faq-content {
  padding: 0 20px 18px;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 4px;
  padding-top: 14px;
}

/* ================= 深度内链：相关文章与推荐专题 ================= */
.article-related-box {
  margin: 36px 0 28px;
  padding: 24px;
  background: rgba(22, 13, 46, 0.7);
  border: 1px solid var(--border-pink);
  border-radius: var(--radius-btn);
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.15);
}

.article-related-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-cyan);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-related-links {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 12px;
  padding-left: 0;
}

.article-related-links li {
  margin-bottom: 0;
}

.article-related-links a {
  color: #FFFFFF;
  text-decoration: none;
  font-size: 0.92rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
  padding: 6px 10px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  width: 100%;
}

.article-related-links a:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
  background: rgba(34, 211, 238, 0.08);
  transform: translateX(3px);
}

/* ================= 响应式媒体查询 (Mobile Adaptive) ================= */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-left {
    text-align: center;
  }
  
  .hero-intro-box {
    text-align: left;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .features-grid,
  .pricing-grid,
  .testimonials-grid,
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-card.featured {
    order: -1;
    grid-column: span 2;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-container {
    height: auto;
    flex-wrap: wrap;
    padding: 10px 0;
    gap: 10px;
  }
  
  .nav-menu {
    display: flex;
    order: 3;
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    gap: 10px;
    padding: 4px 0 2px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }
  
  .nav-menu::-webkit-scrollbar {
    display: none;
  }
  
  .nav-link {
    font-size: 0.84rem;
    padding: 4px 10px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-btn);
  }
  
  .hero-section {
    padding: 40px 0 30px;
  }
  
  .fiber-tunnel-wrapper {
    width: 290px;
    height: 290px;
    margin: 0 auto;
  }
  
  .tunnel-stage {
    transform: scale(0.85);
  }
  
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .features-grid,
  .support-grid,
  .pricing-grid,
  .testimonials-grid,
  .articles-grid {
    grid-template-columns: 1fr;
  }
  
  .pricing-card.featured {
    grid-column: span 1;
    order: 0;
  }
  
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    padding: 16px;
    gap: 16px;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .cta-banner {
    padding: 40px 20px;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
    gap: 20px;
  }
  
  .footer-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }
  
  .btn-lg {
    padding: 12px 24px;
    font-size: 1rem;
  }
  
  .fiber-tunnel-wrapper {
    width: 260px;
    height: 260px;
  }
  
  .tunnel-stage {
    transform: scale(0.75);
  }
}

/* ==========================================================================
   无障碍 (a11y) 与增强代码质量规范
   ========================================================================== */

/* 1. 键盘跳过导航入口 (Skip-link) */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-cyan);
  color: #0F0820;
  padding: 12px 20px;
  border-radius: var(--radius-btn);
  font-weight: 700;
  font-size: 0.95rem;
  z-index: 999999;
  text-decoration: none;
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.6);
  transition: top 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 16px;
  outline: 3px solid #FFFFFF;
  outline-offset: 2px;
}

/* 2. 键盘可见焦点轮廓 (:focus-visible) */
:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 3px;
}

a:focus:not(:focus-visible),
button:focus:not(:focus-visible) {
  outline: none;
}

/* 3. 避免固定页眉遮挡锚点标题 (scroll-margin-top) */
section[id],
.section[id],
#features,
#streaming-ai,
#pricing,
#reviews,
#faq {
  scroll-margin-top: 88px;
}

/* 4. 正文与标题防撑破换行处理 */
body, p, h1, h2, h3, h4, li, a, td, th {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 5. 移动端可点击区域满足至少 44×44 CSS 像素 */
@media (max-width: 768px) {
  .nav-link {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 12px;
  }
  
  .footer-nav a {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 12px;
  }
  
  .btn {
    min-height: 44px;
    min-width: 44px;
  }
}

/* 6. 套餐语义化对比表与横向防撑破容器 (光纤赛博风 + 首列固定 + 霓虹滑动条) */
.pricing-table-wrap {
  margin-top: 48px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  scrollbar-width: thin;
  scrollbar-color: var(--color-cyan) rgba(15, 8, 32, 0.85);
}

/* 赛博细滑动条 */
.pricing-table-wrap::-webkit-scrollbar {
  height: 6px;
}

.pricing-table-wrap::-webkit-scrollbar-track {
  background: rgba(15, 8, 32, 0.9);
  border-radius: 4px;
}

.pricing-table-wrap::-webkit-scrollbar-thumb {
  background: linear-gradient(90deg, var(--color-pink), var(--color-cyan));
  border-radius: 4px;
  box-shadow: 0 0 8px rgba(34, 211, 238, 0.5);
}

.pricing-table-wrap::-webkit-scrollbar-thumb:hover {
  background: var(--color-cyan);
}

.pricing-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  text-align: left;
  min-width: 600px;
}

.pricing-table caption {
  padding: 16px 20px;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-cyan);
  text-align: left;
  caption-side: top;
  background: rgba(34, 211, 238, 0.05);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.caption-title {
  display: inline-flex;
  align-items: center;
}

.table-scroll-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-cyan);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
  padding: 4px 12px;
  border-radius: 20px;
}

.pricing-table th,
.pricing-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.92rem;
  color: var(--text-main);
  white-space: nowrap;
  word-break: normal;
  overflow-wrap: normal;
}

/* 首列固定与背景防透视 (Sticky First Column for Mobile) */
.pricing-table .col-sticky {
  position: sticky;
  left: 0;
  background: #140826;
  z-index: 2;
  box-shadow: 3px 0 10px rgba(0, 0, 0, 0.45);
  border-right: 1px solid var(--border-color);
  min-width: 120px;
  text-align: left;
}

.pricing-table thead th.col-sticky {
  z-index: 3;
  background: #180a30;
  color: var(--color-pink);
}

.pricing-table thead th {
  background: rgba(255, 255, 255, 0.04);
  color: var(--color-pink);
  font-weight: 700;
  text-align: center;
}

.pricing-table thead th.col-featured {
  color: #fff;
  background: rgba(236, 72, 153, 0.15);
  border-left: 1px solid rgba(236, 72, 153, 0.3);
  border-right: 1px solid rgba(236, 72, 153, 0.3);
}

.pricing-table tbody td.col-featured {
  background: rgba(236, 72, 153, 0.04);
  border-left: 1px solid rgba(236, 72, 153, 0.2);
  border-right: 1px solid rgba(236, 72, 153, 0.2);
  color: #fff;
  font-weight: 600;
}

.pricing-table tbody th {
  color: var(--text-main);
  font-weight: 600;
}

.pricing-table tbody td {
  text-align: center;
}

.pricing-table tbody tr:hover td {
  background: rgba(255, 255, 255, 0.03);
}

.pricing-table tbody tr:hover td.col-featured {
  background: rgba(236, 72, 153, 0.08);
}

.pricing-table tbody tr:last-child th,
.pricing-table tbody tr:last-child td {
  border-bottom: none;
}

.table-btn {
  min-height: 40px;
  min-width: 96px;
  padding: 6px 16px;
  font-size: 0.85rem;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .pricing-table th,
  .pricing-table td {
    padding: 12px 14px;
    font-size: 0.85rem;
  }

  .table-btn {
    min-height: 44px; /* 满足触摸热区规范 */
    min-width: 90px;
    padding: 8px 14px;
    font-size: 0.85rem;
  }
}

/* 7. 前庭减动偏好支持 (prefers-reduced-motion) */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .cyber-bg-layer,
  .fiber-line,
  .glow-orb-pink,
  .glow-orb-cyan,
  .tunnel-assembly,
  .stream-particle,
  .tunnel-lightning {
    animation: none !important;
    transform: none !important;
  }
}

/* ================= 网站地图 (Sitemap) 页面卡片与内链列表排版 ================= */
.sitemap-container {
  max-width: 1040px;
}

.sitemap-section {
  margin-bottom: 44px;
}

.sitemap-section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.35rem;
  color: #fff;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.sitemap-section-title::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--color-cyan);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--color-cyan);
}

.sitemap-cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.sitemap-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 24px;
  transition: var(--transition);
}

.sitemap-box:hover {
  border-color: var(--color-cyan);
  box-shadow: 0 0 20px rgba(34, 211, 238, 0.15);
  transform: translateY(-2px);
}

.sitemap-box.featured-box {
  border-color: rgba(236, 72, 153, 0.35);
  background: rgba(236, 72, 153, 0.04);
}

.sitemap-box.featured-box:hover {
  border-color: var(--color-pink);
  box-shadow: 0 0 25px rgba(236, 72, 153, 0.2);
}

.sitemap-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.sitemap-box-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 0;
}

.sitemap-box-title a {
  color: #fff;
  text-decoration: none;
  transition: var(--transition);
}

.sitemap-box-title a:hover {
  color: var(--color-cyan);
}

.sitemap-box.featured-box .sitemap-box-title a:hover {
  color: var(--color-pink);
}

.sitemap-box-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.sitemap-sublinks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  list-style: none;
  padding: 0;
  margin: 0;
  border-top: 1px solid var(--border-color);
  padding-top: 12px;
}

.sitemap-sublinks li a {
  font-size: 0.84rem;
  color: var(--color-cyan);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.sitemap-sublinks li a:hover {
  color: #fff;
  text-shadow: 0 0 8px var(--color-cyan);
}

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

.sitemap-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-btn);
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: var(--transition);
}

.sitemap-article-card:hover {
  border-color: var(--color-pink);
  box-shadow: 0 0 20px rgba(236, 72, 153, 0.15);
  transform: translateX(4px);
}

.sitemap-article-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

.sitemap-article-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.5;
}

.sitemap-article-title a {
  color: #fff;
  text-decoration: none;
  transition: var(--transition);
}

.sitemap-article-title a:hover {
  color: var(--color-pink);
}

.sitemap-article-meta {
  font-size: 0.8rem;
  color: var(--text-dim);
  white-space: nowrap;
}

.sitemap-article-summary {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.sitemap-tags-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.sitemap-tag-pill {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-cyan);
  background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.2);
  padding: 2px 8px;
  border-radius: 4px;
}

@media (max-width: 768px) {
  .sitemap-cards-grid {
    grid-template-columns: 1fr;
  }
  
  .sitemap-article-card {
    padding: 16px 18px;
  }
}