/* ===================================================================
   肥猫云 FeiMaoYun - 全息投影 · 光场幻影 · 投影科技 原生样式表
   配色：主背景 #0A0E27 | 主色 #06B6D4 (全息青) | 次色 #A855F7 (光场紫)
   文字：#FFFFFF / rgba(255, 255, 255, 0.6)
   字体：大标题 Space Grotesk 700 | 正文 Inter / 思源黑体
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Space+Grotesk:wght@700&display=swap');

:root {
  --bg-main: #0A0E27;
  --bg-card: rgba(16, 23, 56, 0.65);
  --bg-card-hover: rgba(23, 33, 76, 0.85);
  --bg-accent-subtle: rgba(6, 182, 212, 0.08);
  --border-color: rgba(6, 182, 212, 0.18);
  --border-glow: rgba(168, 85, 247, 0.4);
  
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.72);
  --text-muted: rgba(255, 255, 255, 0.48);
  
  /* 全息科技主题色 */
  --holo-cyan: #06B6D4;
  --holo-purple: #A855F7;
  --primary-gradient: linear-gradient(135deg, #06B6D4 0%, #A855F7 100%);
  --glow-cyan: rgba(6, 182, 212, 0.5);
  --glow-purple: rgba(168, 85, 247, 0.6);

  --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  
  --container-max-width: 1240px;
  --radius-btn: 12px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

body {
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  position: relative;
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(circle at 18% 22%, rgba(6, 182, 212, 0.16) 0%, transparent 45%),
    radial-gradient(circle at 82% 48%, rgba(168, 85, 247, 0.18) 0%, transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(6, 182, 212, 0.1) 0%, transparent 40%);
}

a {
  color: inherit;
  text-decoration: none;
}

img, svg {
  display: block;
}

/* ===================================================================
   背景动效层 (全息光线、扫描线纹理、漂移粒子、渐隐细网格)
   =================================================================== */

/* 1. 扫描线纹理叠加 */
.holo-scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.18) 0px,
    rgba(0, 0, 0, 0.18) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0.75;
}

/* 2. 细网格边缘渐隐 */
.holo-mesh-grid {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-size: 44px 44px;
  background-image: 
    linear-gradient(to right, rgba(6, 182, 212, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(6, 182, 212, 0.05) 1px, transparent 1px);
  mask-image: radial-gradient(ellipse 75% 65% at 50% 50%, #000 35%, transparent 85%);
  -webkit-mask-image: radial-gradient(ellipse 75% 65% at 50% 50%, #000 35%, transparent 85%);
}

/* 3. 全息光线 SVG (对角流动 3秒一周期) */
.holo-rays-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.holo-ray-line {
  stroke-dasharray: 120 180;
  animation: holoRayFlow 3s linear infinite;
}

.holo-ray-1 {
  stroke: url(#cyan-ray-grad);
  stroke-width: 2.2;
}

.holo-ray-2 {
  stroke: url(#purple-ray-grad);
  stroke-width: 2.8;
  animation-duration: 2.8s;
  animation-delay: -0.8s;
}

.holo-ray-3 {
  stroke: url(#mix-ray-grad);
  stroke-width: 1.8;
  animation-duration: 3.2s;
  animation-delay: -1.6s;
}

@keyframes holoRayFlow {
  0% {
    stroke-dashoffset: 600;
  }
  100% {
    stroke-dashoffset: 0;
  }
}

/* 4. 四个上升带横向漂移的青/紫粒子 */
.holo-particles-container {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 2;
  overflow: hidden;
}

.holo-particle {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  animation: particleRiseDrift 10s ease-in-out infinite;
}

.holo-particle-1 {
  width: 8px;
  height: 8px;
  left: 15%;
  bottom: -20px;
  background: var(--holo-cyan);
  box-shadow: 0 0 14px var(--holo-cyan);
  animation-duration: 9s;
  animation-delay: 0s;
}

.holo-particle-2 {
  width: 10px;
  height: 10px;
  left: 45%;
  bottom: -20px;
  background: var(--holo-purple);
  box-shadow: 0 0 18px var(--holo-purple);
  animation-duration: 11s;
  animation-delay: 2.5s;
}

.holo-particle-3 {
  width: 6px;
  height: 6px;
  left: 72%;
  bottom: -20px;
  background: var(--holo-cyan);
  box-shadow: 0 0 12px var(--holo-cyan);
  animation-duration: 8.5s;
  animation-delay: 4.8s;
}

.holo-particle-4 {
  width: 9px;
  height: 9px;
  left: 88%;
  bottom: -20px;
  background: var(--holo-purple);
  box-shadow: 0 0 16px var(--holo-purple);
  animation-duration: 12s;
  animation-delay: 1.2s;
}

@keyframes particleRiseDrift {
  0% {
    transform: translateY(0) translateX(0);
    opacity: 0;
  }
  15% {
    opacity: 0.9;
  }
  50% {
    transform: translateY(-50vh) translateX(35px);
    opacity: 0.7;
  }
  85% {
    opacity: 0.8;
  }
  100% {
    transform: translateY(-110vh) translateX(-25px);
    opacity: 0;
  }
}

/* 页面主体容器 */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
  z-index: 3;
}

/* ===================================================================
   顶部导航栏 (页眉导航目录)
   =================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background-color: rgba(10, 14, 39, 0.82);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  height: 74px;
  display: flex;
  align-items: center;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  color: #fff;
}

.logo-cat-icon {
  color: var(--holo-cyan);
  filter: drop-shadow(0 0 10px rgba(6, 182, 212, 0.7));
}

.logo-badge {
  background: var(--primary-gradient);
  color: #fff;
  padding: 2px 8px;
  font-size: 0.7rem;
  border-radius: var(--radius-pill);
  font-weight: 700;
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.5);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  padding: 6px 6px;
  position: relative;
}

.nav-links a:hover {
  color: var(--holo-cyan);
  text-shadow: 0 0 8px rgba(6, 182, 212, 0.6);
}

.nav-highlight-link {
  color: #fff !important;
  font-weight: 600 !important;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(168, 85, 247, 0.15);
  padding: 6px 14px !important;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(168, 85, 247, 0.45);
  box-shadow: 0 0 14px rgba(168, 85, 247, 0.3);
}

.nav-highlight-link:hover {
  background: rgba(168, 85, 247, 0.3);
  border-color: var(--holo-purple);
  box-shadow: 0 0 20px rgba(168, 85, 247, 0.6);
}

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

/* ===================================================================
   CTA 按钮规范 (青到紫渐变，圆角12px，带30px青色辉光，hover变紫)
   =================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.96rem;
  padding: 12px 24px;
  border-radius: var(--radius-btn);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: 1px solid transparent;
  min-height: 46px;
  text-align: center;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-gradient);
  color: #ffffff;
  border-radius: 12px;
  box-shadow: 0 0 30px var(--glow-cyan);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px var(--glow-purple);
  filter: brightness(1.1);
}

.btn-secondary {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background-color: rgba(6, 182, 212, 0.12);
  border-color: var(--holo-cyan);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.4);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 34px;
  font-size: 1.08rem;
  min-height: 52px;
}

.btn-full {
  width: 100%;
}

/* ===================================================================
   大标题布局 (左侧 Space Grotesk 700 + 渐变与双层阴影；右侧 280×280 全息装置)
   =================================================================== */
.hero-section {
  padding: 60px 0 60px;
  position: relative;
}

.hero-grid-layout {
  display: grid;
  grid-template-columns: 1.22fr 0.98fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 48px;
}

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

.hero-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.35);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  color: var(--holo-cyan);
  margin-bottom: 20px;
  font-weight: 500;
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
}

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

.hero-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 3.5rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
  background: linear-gradient(135deg, #06B6D4 0%, #A855F7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 20px rgba(6, 182, 212, 0.6), 0 0 40px rgba(168, 85, 247, 0.4);
}

.hero-title-sub {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  color: #FFFFFF;
  margin-top: 6px;
  letter-spacing: -0.01em;
  -webkit-text-fill-color: initial;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.hero-intro-box {
  background: rgba(16, 23, 56, 0.6);
  border: 1px solid rgba(6, 182, 212, 0.25);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  margin-bottom: 28px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(12px);
  position: relative;
  overflow: hidden;
}

.hero-intro-box::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary-gradient);
  box-shadow: 0 0 10px var(--holo-cyan);
}

.hero-intro-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.hero-intro-badge {
  background: rgba(6, 182, 212, 0.2);
  color: var(--holo-cyan);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(6, 182, 212, 0.4);
}

.hero-intro-title {
  font-size: 1.08rem;
  font-weight: 700;
  color: #ffffff;
}

.hero-intro-text {
  font-size: 0.94rem;
  color: var(--text-secondary);
  line-height: 1.75;
}

.hero-intro-text strong {
  color: #fff;
}

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

/* ===================================================================
   右侧 280×280px 全息投影底座与 3D 地球仪动画系统
   =================================================================== */
.hero-right-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.holo-projector-stage {
  width: 280px;
  height: 280px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.holo-base-emitter {
  position: absolute;
  bottom: 0px;
  width: 280px;
  height: 80px;
  border-radius: 50%;
  background: radial-gradient(ellipse at center, rgba(6, 182, 212, 0.7) 0%, rgba(168, 85, 247, 0.35) 45%, transparent 75%);
  filter: blur(14px);
  animation: holoBasePulse 4s ease-in-out infinite;
  pointer-events: none;
}

@keyframes holoBasePulse {
  0%, 100% {
    transform: scale(0.95);
    opacity: 0.65;
    filter: blur(14px);
  }
  50% {
    transform: scale(1.18);
    opacity: 1;
    filter: blur(20px);
  }
}

.holo-vertical-beam {
  position: absolute;
  bottom: 30px;
  left: calc(50% - 2px);
  width: 4px;
  height: 200px;
  background: linear-gradient(to top, rgba(6, 182, 212, 0.95) 0%, rgba(168, 85, 247, 0.5) 60%, transparent 100%);
  box-shadow: 0 0 16px var(--holo-cyan), 0 0 28px rgba(6, 182, 212, 0.6);
  transform-origin: bottom center;
  animation: beamScanSwing 6s ease-in-out infinite;
  pointer-events: none;
}

@keyframes beamScanSwing {
  0%, 100% {
    transform: rotate(-10deg);
  }
  50% {
    transform: rotate(10deg);
  }
}

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

.holo-orbit-1 {
  width: 250px;
  height: 250px;
  border: 1.5px dashed rgba(6, 182, 212, 0.55);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.25);
  animation: orbitRotateCW 18s linear infinite;
}

.holo-orbit-2 {
  width: 220px;
  height: 220px;
  border: 1.5px dashed rgba(168, 85, 247, 0.5);
  box-shadow: 0 0 12px rgba(168, 85, 247, 0.25);
  transform: rotateX(65deg);
  animation: orbitRotateCCW 12s linear infinite;
}

@keyframes orbitRotateCW {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes orbitRotateCCW {
  0% { transform: rotateX(65deg) rotate(360deg); }
  100% { transform: rotateX(65deg) rotate(0deg); }
}

.holo-globe-container {
  width: 200px;
  height: 200px;
  position: absolute;
  top: 15px;
  perspective: 800px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.holo-globe-svg {
  width: 200px;
  height: 200px;
  transform-style: preserve-3d;
  animation: globeRotateY 16s linear infinite;
  filter: drop-shadow(0 0 14px rgba(6, 182, 212, 0.7));
}

@keyframes globeRotateY {
  0% {
    transform: rotateY(0deg);
  }
  100% {
    transform: rotateY(360deg);
  }
}

.holo-data-dot {
  animation: dataDotPulse 2s ease-in-out infinite alternate;
}

.holo-data-dot-2 {
  animation-delay: 0.7s;
}

.holo-data-dot-3 {
  animation-delay: 1.4s;
}

@keyframes dataDotPulse {
  0% {
    r: 3.5px;
    opacity: 0.6;
  }
  100% {
    r: 5.5px;
    opacity: 1;
    filter: drop-shadow(0 0 8px #fff);
  }
}

.holo-scanner-line {
  position: absolute;
  top: 0;
  width: 240px;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, #06B6D4 50%, transparent 100%);
  box-shadow: 0 0 12px #06B6D4, 0 0 20px #06B6D4;
  animation: scannerLineSweep 3s ease-in-out infinite;
  pointer-events: none;
}

@keyframes scannerLineSweep {
  0% {
    top: 5px;
    opacity: 0.1;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    top: 225px;
    opacity: 0.1;
  }
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  padding: 24px 30px;
  background: rgba(16, 23, 56, 0.7);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.metric-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.02em;
}

.metric-value .accent {
  color: var(--holo-cyan);
  text-shadow: 0 0 10px rgba(6, 182, 212, 0.6);
}

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

/* ===================================================================
   分区通用排版与卡片样式
   =================================================================== */
.section {
  padding: 85px 0;
  position: relative;
}

.section-alt {
  background-color: rgba(12, 17, 43, 0.5);
  border-top: 1px solid rgba(6, 182, 212, 0.08);
  border-bottom: 1px solid rgba(6, 182, 212, 0.08);
}

.section-header {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--holo-cyan);
  margin-bottom: 12px;
  text-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
  color: #fff;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
}

/* 核心优势卡片 (3 Cards) */
.advantages-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 30px;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

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

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5), 0 0 25px rgba(6, 182, 212, 0.18);
}

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

.feature-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--holo-cyan);
  box-shadow: 0 0 15px rgba(6, 182, 212, 0.2);
}

.feature-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 14px;
  color: #ffffff;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.feature-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 18px;
}

.feature-points li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-primary);
}

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

/* 流媒体与 AI 支持图卡 */
.support-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
}

.support-category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 38px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.support-category-card.streaming {
  background: linear-gradient(180deg, rgba(20, 28, 68, 0.8) 0%, rgba(13, 17, 46, 0.95) 100%);
  border-color: rgba(6, 182, 212, 0.25);
}

.support-category-card.ai {
  background: linear-gradient(180deg, rgba(32, 22, 70, 0.8) 0%, rgba(13, 17, 46, 0.95) 100%);
  border-color: rgba(168, 85, 247, 0.3);
}

.support-badge {
  display: inline-block;
  padding: 4px 12px;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.support-badge.streaming {
  background: rgba(6, 182, 212, 0.15);
  color: var(--holo-cyan);
  border: 1px solid rgba(6, 182, 212, 0.35);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
}

.support-badge.ai {
  background: rgba(168, 85, 247, 0.18);
  color: #c084fc;
  border: 1px solid rgba(168, 85, 247, 0.4);
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.2);
}

.support-cat-title {
  font-family: var(--font-heading);
  font-size: 1.55rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: #ffffff;
}

.support-cat-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 26px;
  line-height: 1.6;
}

.app-chips-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 12px;
}

.app-chip {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.app-chip:hover {
  background: rgba(6, 182, 212, 0.15);
  border-color: var(--holo-cyan);
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.3);
  transform: translateY(-2px);
}

.chip-status {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--holo-cyan);
  box-shadow: 0 0 6px var(--holo-cyan);
}

/* ===================================================================
   价格套餐对比表
   =================================================================== */
.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: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}

.pricing-card:hover {
  transform: translateY(-6px);
  border-color: rgba(6, 182, 212, 0.5);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 25px rgba(6, 182, 212, 0.2);
}

.pricing-card.featured {
  background: linear-gradient(180deg, rgba(28, 22, 65, 0.9) 0%, rgba(16, 23, 56, 0.95) 100%);
  border: 2px solid var(--holo-purple);
  box-shadow: 0 10px 35px rgba(168, 85, 247, 0.35);
  transform: scale(1.03);
  z-index: 2;
}

.pricing-card.featured:hover {
  transform: scale(1.03) translateY(-6px);
  box-shadow: 0 20px 45px rgba(168, 85, 247, 0.45);
}

.popular-ribbon {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-gradient);
  color: #ffffff;
  padding: 4px 18px;
  font-size: 0.8rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.6);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.plan-header {
  margin-bottom: 20px;
}

.plan-name {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
}

.plan-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.plan-price-box {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 10px;
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--holo-cyan);
}

.price-amount {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 700;
  line-height: 1;
  color: #ffffff;
}

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

.plan-annual-tip {
  font-size: 0.82rem;
  color: var(--holo-cyan);
  background: rgba(6, 182, 212, 0.1);
  padding: 4px 10px;
  border-radius: 6px;
  display: inline-block;
  margin-bottom: 22px;
  border: 1px solid rgba(6, 182, 212, 0.3);
}

.plan-features-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 13px;
  margin-bottom: 32px;
  flex-grow: 1;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 20px;
}

.plan-features-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

.plan-features-list li.highlight-feat {
  color: var(--text-primary);
  font-weight: 600;
}

.plan-features-list svg {
  color: var(--holo-cyan);
  flex-shrink: 0;
  margin-top: 2px;
}

/* ===================================================================
   用户评价 (Testimonials)
   =================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--transition-normal);
  backdrop-filter: blur(8px);
}

.review-card:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: rgba(6, 182, 212, 0.4);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.stars-row {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 18px;
  filter: drop-shadow(0 0 6px rgba(251, 191, 36, 0.5));
}

.review-quote {
  font-size: 0.98rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--primary-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 0 12px rgba(6, 182, 212, 0.4);
}

.author-meta {
  display: flex;
  flex-direction: column;
}

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

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

/* ===================================================================
   常见问题 (FAQ)
   =================================================================== */
.faq-container {
  max-width: 840px;
  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-md);
  overflow: hidden;
  transition: all var(--transition-fast);
  backdrop-filter: blur(8px);
}

.faq-item[open] {
  border-color: rgba(6, 182, 212, 0.45);
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}

.faq-summary {
  list-style: none;
  padding: 22px 26px;
  font-size: 1.08rem;
  font-weight: 600;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  transition: background-color var(--transition-fast);
}

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

.faq-summary:hover {
  background-color: rgba(6, 182, 212, 0.05);
}

.faq-icon-chevron {
  width: 20px;
  height: 20px;
  color: var(--holo-cyan);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

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

.faq-answer {
  padding: 0 26px 22px 26px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 16px;
}

/* 底部行动号召横幅 */
.bottom-cta-banner {
  margin-top: 40px;
  padding: 60px 40px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(20, 28, 68, 0.9) 0%, rgba(13, 17, 46, 0.98) 100%);
  border: 1px solid rgba(6, 182, 212, 0.35);
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 35px rgba(6, 182, 212, 0.2);
}

.bottom-cta-title {
  font-family: var(--font-heading);
  font-size: 2.3rem;
  font-weight: 700;
  margin-bottom: 14px;
}

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

/* ===================================================================
   页脚规范 (只保留4个标题)
   =================================================================== */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background-color: #07091B;
  padding: 44px 0 36px;
  position: relative;
  z-index: 3;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 24px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 36px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-nav li a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  font-weight: 500;
  transition: all var(--transition-fast);
  padding: 6px 10px;
}

.footer-nav li a:hover {
  color: var(--holo-cyan);
  text-shadow: 0 0 8px rgba(6, 182, 212, 0.6);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

/* ===================================================================
   独立子页面排版 (关于我们、服务条款、隐私政策、网站地图)
   =================================================================== */
.subpage-hero {
  padding: 60px 0 30px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 50px;
}

.subpage-title {
  font-family: var(--font-heading);
  font-size: 2.7rem;
  font-weight: 700;
  margin-bottom: 14px;
  background: var(--primary-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 25px rgba(6, 182, 212, 0.4);
}

.subpage-subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
  max-width: 760px;
  margin: 0 auto;
}

.subpage-content {
  max-width: 900px;
  margin: 0 auto 80px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 48px;
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
}

.legal-section {
  margin-bottom: 40px;
}

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

.legal-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.legal-text {
  font-size: 0.98rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

.legal-list {
  padding-left: 20px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.98rem;
}

.legal-list li {
  margin-bottom: 8px;
}

.alert-box {
  padding: 18px 22px;
  border-radius: 10px;
  margin: 20px 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.alert-warning {
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.35);
  color: #fca5a5;
}

.alert-info {
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: #67e8f9;
}

.alert-success {
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.35);
  color: #6ee7b7;
}

.sitemap-group {
  margin-bottom: 32px;
}

.sitemap-group-title {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  border-left: 3px solid var(--holo-cyan);
  padding-left: 12px;
}

.sitemap-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 14px;
}

.sitemap-link-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  padding: 14px 18px;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: all var(--transition-fast);
}

.sitemap-link-item:hover {
  background: rgba(6, 182, 212, 0.1);
  border-color: var(--holo-cyan);
  box-shadow: 0 0 14px rgba(6, 182, 212, 0.25);
  transform: translateY(-2px);
}

.sitemap-link-item strong {
  font-size: 0.95rem;
  color: #ffffff;
}

.sitemap-link-item span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ===================================================================
   知识科普 9 篇 SEO 深度文章专用样式表 (SEO-Optimized Article Styles)
   =================================================================== */

/* 文章速览索引卡片盒 */
.wiki-articles-toc-box {
  background: rgba(16, 23, 56, 0.7);
  border: 1px solid rgba(6, 182, 212, 0.3);
  border-radius: var(--radius-lg);
  padding: 30px;
  margin-bottom: 50px;
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.toc-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  flex-wrap: wrap;
  gap: 10px;
}

.toc-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 10px;
}

.toc-badge {
  background: rgba(168, 85, 247, 0.2);
  border: 1px solid rgba(168, 85, 247, 0.5);
  color: #c084fc;
  font-size: 0.8rem;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
}

.toc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}

.toc-card-link {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(6, 182, 212, 0.15);
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all var(--transition-fast);
}

.toc-card-link:hover {
  background: rgba(6, 182, 212, 0.12);
  border-color: var(--holo-cyan);
  box-shadow: 0 0 16px rgba(6, 182, 212, 0.3);
  transform: translateY(-2px);
}

.toc-card-num {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--holo-cyan);
  letter-spacing: 0.05em;
}

.toc-card-title {
  font-size: 0.93rem;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
}

.toc-card-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 单篇文章卡片容器 */
.seo-article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px;
  margin-bottom: 50px;
  backdrop-filter: blur(12px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast);
}

.seo-article-card:hover {
  border-color: rgba(6, 182, 212, 0.45);
}

.seo-article-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--primary-gradient);
  opacity: 0.8;
}

.article-header {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.article-badge-category {
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: var(--holo-cyan);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
}

.article-meta-item {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 4px;
}

.article-main-title {
  font-family: var(--font-heading);
  font-size: 1.85rem;
  font-weight: 700;
  line-height: 1.35;
  color: #ffffff;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.article-lead {
  font-size: 1.02rem;
  color: var(--text-secondary);
  line-height: 1.7;
  background: rgba(255, 255, 255, 0.02);
  border-left: 3px solid var(--holo-purple);
  padding: 12px 18px;
  border-radius: 0 8px 8px 0;
  margin-bottom: 24px;
}

.article-body h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin: 28px 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-body h3::before {
  content: "✦";
  color: var(--holo-cyan);
  font-size: 0.9em;
}

.article-body p {
  font-size: 0.97rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.article-body ul, .article-body ol {
  padding-left: 22px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 0.96rem;
  margin-bottom: 20px;
}

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

.article-body strong {
  color: #ffffff;
}

/* SEO 内链高亮跳转卡片 */
.internal-seo-callout {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.12) 0%, rgba(168, 85, 247, 0.12) 100%);
  border: 1px solid rgba(6, 182, 212, 0.4);
  border-radius: 12px;
  padding: 20px 24px;
  margin: 26px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.15);
}

.internal-seo-callout-text h4 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 4px;
}

.internal-seo-callout-text p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0;
}

.inline-link-glow {
  color: var(--holo-cyan);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: all var(--transition-fast);
}

.inline-link-glow:hover {
  color: #fff;
  text-shadow: 0 0 8px var(--holo-cyan);
}

/* ===================================================================
   响应式媒体查询 (@media)
   =================================================================== */

@media (max-width: 1024px) {
  .hero-grid-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-left-content {
    text-align: center;
  }
  .hero-title {
    font-size: 2.9rem;
  }
  .hero-actions {
    justify-content: center;
  }
  .advantages-grid,
  .pricing-grid,
  .reviews-grid,
  .toc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-6px);
  }
  .support-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .site-header {
    height: auto;
    padding: 12px 0;
  }
  .header-inner {
    flex-wrap: wrap;
    gap: 12px;
  }
  .nav-links {
    width: 100%;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 6px;
    gap: 14px;
    -webkit-overflow-scrolling: touch;
  }
  .nav-links::-webkit-scrollbar {
    display: none;
  }
  .header-cta-group {
    margin-left: auto;
  }

  .hero-section {
    padding: 36px 0 30px;
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .hero-title-sub {
    font-size: 1.35rem;
  }
  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 20px;
  }
  .hero-intro-box {
    padding: 18px 16px;
    text-align: left;
  }
  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  .hero-actions .btn {
    width: 100%;
  }

  .hero-projector-stage {
    transform: scale(0.9);
  }

  .hero-metrics {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    padding: 18px 16px;
  }
  .metric-value {
    font-size: 1.45rem;
  }

  .section {
    padding: 60px 0;
  }
  .section-title {
    font-size: 1.75rem;
  }
  .advantages-grid,
  .pricing-grid,
  .reviews-grid,
  .toc-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .subpage-content,
  .seo-article-card {
    padding: 24px 18px;
  }
  .subpage-title {
    font-size: 2rem;
  }
  .article-main-title {
    font-size: 1.45rem;
  }

  .bottom-cta-banner {
    padding: 36px 20px;
  }
  .bottom-cta-title {
    font-size: 1.6rem;
  }

  .footer-nav {
    flex-direction: column;
    gap: 14px;
  }
}


/* ===================================================================
   无障碍增强：键盘跳转主要内容 (Skip Link)
   =================================================================== */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--primary-cyan);
  color: #0A0E27;
  padding: 12px 20px;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-btn);
  z-index: 9999;
  text-decoration: none;
  box-shadow: 0 0 20px rgba(6, 182, 212, 0.6);
  transition: top 0.2s ease;
}
.skip-link:focus,
.skip-link:focus-visible {
  top: 16px;
  outline: 2px solid #FFFFFF;
  outline-offset: 2px;
}

/* ===================================================================
   键盘焦点规范 (:focus / :focus-visible)
   =================================================================== */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--primary-cyan);
  outline-offset: 3px;
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.4);
}

/* ===================================================================
   固定页眉防遮挡 (scroll-margin-top)
   =================================================================== */
.section,
section[id],
article[id],
h1[id],
h2[id],
h3[id],
.hero-section {
  scroll-margin-top: calc(var(--header-height) + 24px);
}

/* ===================================================================
   移动端触控友好尺寸 (Touch Target >= 44x44px)
   =================================================================== */
.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.footer-nav a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.faq-summary {
  min-height: 48px;
}

/* ===================================================================
   减少动画与前庭友好 (prefers-reduced-motion)
   =================================================================== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .holo-scanlines,
  .holo-rays-canvas,
  .holo-particles-container,
  .holo-vertical-beam,
  .holo-scan-line,
  .holo-orbit {
    display: none !important;
  }
  .holo-globe-svg {
    animation: none !important;
  }
}

/* ===================================================================
   套餐表格语义化容器 (仅在需要时横向滚动，支持无障碍屏幕阅读器)
   =================================================================== */
.pricing-table-accessible-wrapper {
  margin-top: 36px;
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-card);
  padding: 24px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.pricing-semantic-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  min-width: 580px;
}
.pricing-semantic-table caption {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-align: left;
}
.pricing-semantic-table th,
.pricing-semantic-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.95rem;
  color: var(--text-secondary);
}
.pricing-semantic-table th {
  color: var(--primary-cyan);
  font-weight: 600;
  background: rgba(6, 182, 212, 0.05);
}
.pricing-semantic-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}