/* ===================================================================
   龙猫云 LongMaoYun - 神经元突触 · 意识云锦 · 神经科技视觉规范
   配色:
     主背景: #0A0E27 深蓝黑
     主色:   #10B981 神经绿
     次色:   #F59E0B 突触橙
     文字:   #FFFFFF / rgba(255,255,255,0.78)
   字体:
     大标题 & CTA: JetBrains Mono (700字重 / 等宽)
     正文: 思源黑体 / Inter / 优雅无衬线 (纯系统无外部字体依赖)
=================================================================== */

:root {
  --bg-primary: #0A0E27;
  --bg-secondary: #0D1333;
  --bg-card: rgba(13, 19, 51, 0.72);
  --bg-card-hover: rgba(18, 26, 66, 0.88);
  --text-primary: #FFFFFF;
  --text-secondary: rgba(255, 255, 255, 0.78);
  --text-muted: rgba(255, 255, 255, 0.65); /* 满足 WCAG AA 4.5:1 对比度要求 */
  
  /* 品牌神经科技专属色 */
  --accent-green: #10B981;
  --accent-orange: #F59E0B;
  --accent-cyan: #10B981; /* 统一主视觉为神经绿 */
  --accent-glow-green: 0 0 25px rgba(16, 185, 129, 0.45);
  --accent-glow-orange: 0 0 25px rgba(245, 158, 11, 0.45);
  --accent-gradient: linear-gradient(135deg, #10B981 0%, #06b6d4 40%, #F59E0B 100%);
  
  --border-color: rgba(16, 185, 129, 0.16);
  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-highlight: rgba(16, 185, 129, 0.55);
  --border-orange: rgba(245, 158, 11, 0.45);
  
  --radius-xs: 4px; /* 规范要求的 4px 倒角 */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  
  --shadow-card: 0 14px 35px -10px rgba(0, 0, 0, 0.6);
  --font-mono: "JetBrains Mono", Consolas, "Courier New", monospace;
  --font-sans: "Inter", "Noto Sans SC", "Source Han Sans CN", "PingFang SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --transition: all 0.25s 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;
  scroll-padding-top: 84px; /* 固定页眉锚点滚动补偿 */
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* 锚点标题滚动补偿 */
[id] {
  scroll-margin-top: 84px;
}

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

/* 无障碍键盘访问跳过导航链接 */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent-green);
  color: #0A0E27;
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: var(--radius-xs);
  z-index: 10000;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.4);
  transition: top 0.2s ease;
}

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

/* 无障碍高对比度键盘聚焦指示器 */
:focus-visible {
  outline: 2px solid var(--accent-green);
  outline-offset: 3px;
}

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

img, svg {
  display: block;
}

/* ===================================================================
   背景动效：全屏神经元突触网络 + 细网格 + 双色呼吸引力场
=================================================================== */
.synapse-bg-layer {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

/* 细网格线 (带 radial mask 边缘渐隐) */
.synapse-grid-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(to right, rgba(16, 185, 129, 0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(16, 185, 129, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 40%, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0) 75%);
  -webkit-mask-image: radial-gradient(circle at 50% 40%, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0) 75%);
}

/* 2 个大型 blur 光晕缓慢呼吸缩放 (绿/橙) */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.28;
  mix-blend-mode: screen;
}

.orb-green {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #10B981 0%, rgba(16, 185, 129, 0) 70%);
  top: -100px;
  left: -100px;
  animation: orbBreathe 10s ease-in-out infinite alternate;
}

.orb-orange {
  width: 550px;
  height: 550px;
  background: radial-gradient(circle, #F59E0B 0%, rgba(245, 158, 11, 0) 70%);
  top: 250px;
  right: -120px;
  animation: orbBreathe 12s ease-in-out infinite alternate-reverse;
}

@keyframes orbBreathe {
  0% {
    transform: scale(0.85) translate(0, 0);
    opacity: 0.2;
  }
  50% {
    opacity: 0.35;
  }
  100% {
    transform: scale(1.15) translate(30px, 40px);
    opacity: 0.28;
  }
}

/* 全屏横向神经突触多段贝塞尔曲线与节点 */
.synapse-network-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.bg-synapse-wire {
  fill: none;
  stroke-linecap: round;
  stroke-dasharray: 12 18;
  animation: bgWireFlow 3.5s linear infinite;
}

.wire-g {
  stroke: rgba(16, 185, 129, 0.35);
  filter: drop-shadow(0 0 6px rgba(16, 185, 129, 0.5));
}

.wire-o {
  stroke: rgba(245, 158, 11, 0.32);
  filter: drop-shadow(0 0 6px rgba(245, 158, 11, 0.45));
}

@keyframes bgWireFlow {
  from {
    stroke-dashoffset: 60;
  }
  to {
    stroke-dashoffset: 0;
  }
}

.bg-synapse-node {
  animation: nodePulse 3s ease-in-out infinite alternate;
}

.bg-node-g {
  fill: #10B981;
  filter: drop-shadow(0 0 8px #10B981);
}

.bg-node-o {
  fill: #F59E0B;
  filter: drop-shadow(0 0 8px #F59E0B);
  animation-delay: 1.5s;
}

@keyframes nodePulse {
  0% {
    r: 3px;
    opacity: 0.6;
  }
  50% {
    r: 5px;
    opacity: 1;
  }
  100% {
    r: 3.5px;
    opacity: 0.75;
  }
}

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

/* 导航栏 */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 14, 39, 0.88);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.logo-badge {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--border-highlight);
  color: var(--accent-green);
  font-weight: 600;
}

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

.nav-links a {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--accent-green);
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
}

/* ===================================================================
   CTA 按钮规范：
   绿色描边按钮（无填充），hover 时填充绿色 + 文字变黑，圆角 4px，等宽字体
=================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-xs); /* 严格 4px 圆角 */
  cursor: pointer;
  white-space: nowrap;
  background: transparent;
  border: 1.5px solid var(--accent-green);
  color: var(--accent-green);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: var(--transition);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.15);
}

.btn:hover, 
.btn-primary:hover,
.btn-secondary:hover {
  background: var(--accent-green);
  color: #0A0E27; /* 文字变黑/深底 */
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.65);
  transform: translateY(-2px);
}

.btn:active,
.btn-primary:active {
  transform: translateY(0);
}

.btn-primary {
  background: transparent;
  border-color: var(--accent-green);
  color: var(--accent-green);
}

.btn-secondary {
  background: transparent;
  border: 1.5px solid var(--border-subtle);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  border-color: var(--accent-green);
  background: var(--accent-green);
  color: #0A0E27;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-block {
  width: 100%;
}

/* ===================================================================
   主视觉区 Hero
=================================================================== */
.hero {
  padding: 70px 0 60px;
  position: relative;
  z-index: 1;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  border-radius: var(--radius-xs);
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid var(--border-highlight);
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 600;
  margin-bottom: 28px;
}

.hero-tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 10px var(--accent-green);
}

/* 左右分栏网格 (组件位置不变，左文右动效) */
.hero-grid-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
  margin-bottom: 40px;
}

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

/* 大标题左侧：H1「龙猫云」使用 JetBrains Mono 等宽字体，文字带绿色发光阴影 */
.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(2.3rem, 4.8vw, 3.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -1px;
  margin-bottom: 18px;
}

.hero-title .brand-synapse {
  color: #ffffff;
  display: inline-block;
  text-shadow: 0 0 25px rgba(16, 185, 129, 0.7), 0 0 50px rgba(16, 185, 129, 0.35);
  margin-right: 12px;
}

.hero-title .brand-sub-en {
  color: var(--accent-orange);
  font-size: clamp(1.4rem, 2.5vw, 2.1rem);
  font-weight: 600;
  display: inline-block;
  text-shadow: 0 0 20px rgba(245, 158, 11, 0.5);
}

.hero-title .gradient-tagline {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(1.2rem, 2.2vw, 1.8rem);
  font-weight: 700;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 10px;
  letter-spacing: 0;
}

/* 主视觉区简介 */
.hero-intro-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin: 0 0 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.hero-intro-box p {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 10px;
}

.hero-intro-box p:last-child {
  margin-bottom: 0;
}

.hero-intro-highlights {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border-subtle);
}

.hero-intro-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-green);
  font-weight: 600;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-guarantee {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.84rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-wrap: wrap;
}

.hero-guarantee-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-guarantee-item svg {
  color: var(--accent-green);
}

/* ===================================================================
   右侧动画：340×340px 神经元核心
   - 4层菱形/8字形神经连线 (dashoffset流动)
   - 10个发光神经节点 (节奏脉冲)
   - 2层虚线圆轨道 (绿/橙反向旋转)
   - 中心 100×62px 龙猫剪影 SVG (绿到橙渐变 + 上下浮动 + 缩放2秒一周期 + 双层drop-shadow)
   - 4个角落等宽数据标签 [SYN_01] [SYN_30] [FIRE_OK] [LIVE]
=================================================================== */
.hero-col-right {
  display: flex;
  justify-content: center;
  align-items: center;
}

.neuron-core-card {
  width: 340px;
  height: 340px;
  position: relative;
  background: radial-gradient(circle at center, rgba(16, 185, 129, 0.08) 0%, rgba(10, 14, 39, 0.95) 75%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 35px rgba(0, 0, 0, 0.7), inset 0 0 25px rgba(16, 185, 129, 0.06);
  overflow: hidden;
}

/* 4个角落等宽字体数据标签 */
.corner-tag {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 6px;
  border-radius: var(--radius-xs);
  z-index: 10;
  user-select: none;
}

.tag-tl {
  top: 10px;
  left: 10px;
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.1);
}

.tag-tr {
  top: 10px;
  right: 10px;
  color: var(--accent-orange);
  border: 1px solid rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.1);
}

.tag-bl {
  bottom: 10px;
  left: 10px;
  color: var(--accent-orange);
  border: 1px solid rgba(245, 158, 11, 0.3);
  background: rgba(245, 158, 11, 0.1);
}

.tag-br {
  bottom: 10px;
  right: 10px;
  color: var(--accent-green);
  border: 1px solid rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.1);
}

/* 神经元核心底层 SVG 画布 */
.neuron-svg-canvas {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
}

/* 2层虚线圆轨道 (反向旋转) */
.orbit-ring {
  fill: none;
  stroke-width: 1.2;
}

.orbit-cw {
  stroke: rgba(16, 185, 129, 0.4);
  stroke-dasharray: 6 8;
  transform-origin: 170px 170px;
  animation: rotateCW 18s linear infinite;
}

.orbit-ccw {
  stroke: rgba(245, 158, 11, 0.4);
  stroke-dasharray: 4 6;
  transform-origin: 170px 170px;
  animation: rotateCCW 14s linear infinite;
}

@keyframes rotateCW {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotateCCW {
  from { transform: rotate(360deg); }
  to { transform: rotate(0deg); }
}

/* 4层菱形/8字形神经连线 (dashoffset 流动突触放电) */
.synapse-wire {
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-dasharray: 8 6;
  animation: wireDischarge 3.5s linear infinite;
}

.wire-green {
  stroke: #10B981;
  filter: drop-shadow(0 0 4px #10B981);
}

.wire-orange {
  stroke: #F59E0B;
  filter: drop-shadow(0 0 4px #F59E0B);
  animation-duration: 3s;
}

@keyframes wireDischarge {
  from {
    stroke-dashoffset: 56;
  }
  to {
    stroke-dashoffset: 0;
  }
}

/* 10个发光神经节点 (按节奏脉冲发光) */
.syn-node {
  transform-box: fill-box;
  transform-origin: center;
}

.node-g {
  fill: #10B981;
  filter: drop-shadow(0 0 6px #10B981);
}

.node-o {
  fill: #F59E0B;
  filter: drop-shadow(0 0 6px #F59E0B);
}

.node-p1 { animation: synNodePulse 2s ease-in-out infinite alternate; }
.node-p2 { animation: synNodePulse 2s ease-in-out infinite alternate 0.5s; }
.node-p3 { animation: synNodePulse 2s ease-in-out infinite alternate 1.0s; }
.node-p4 { animation: synNodePulse 2s ease-in-out infinite alternate 1.5s; }

@keyframes synNodePulse {
  0% {
    r: 3px;
    opacity: 0.6;
  }
  50% {
    r: 5px;
    opacity: 1;
  }
  100% {
    r: 3px;
    opacity: 0.6;
  }
}

/* 中心 100×62px 龙猫剪影包装层 */
.totoro-avatar-wrap {
  width: 100px;
  height: 62px;
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  /* 突触放电动画：上下浮动 + 缩放 2 秒一周期 */
  animation: totoroDischarge 2s ease-in-out infinite alternate;
  /* 双层 drop-shadow 辉光 (绿/橙双色) */
  filter: 
    drop-shadow(0 0 14px rgba(16, 185, 129, 0.85))
    drop-shadow(0 0 28px rgba(245, 158, 11, 0.55));
}

@keyframes totoroDischarge {
  0% {
    transform: translateY(-6px) scale(0.96);
  }
  50% {
    transform: translateY(0px) scale(1.04);
  }
  100% {
    transform: translateY(6px) scale(0.98);
  }
}

.totoro-svg {
  width: 100px;
  height: 62px;
  overflow: visible;
}

/* ===================================================================
   核心指标条 Stats bar
=================================================================== */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  padding: 22px 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

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

.stat-val {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-green);
  text-shadow: 0 0 15px rgba(16, 185, 129, 0.4);
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 4px;
}

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

.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 50px;
}

.section-tag {
  font-family: var(--font-mono);
  color: var(--accent-green);
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 10px;
  display: inline-block;
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.4);
}

.section-title {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.5px;
  margin-bottom: 14px;
}

.section-desc {
  color: var(--text-muted);
  font-size: 0.98rem;
  line-height: 1.7;
}

/* ===================================================================
   产品核心优势 3 卡片
=================================================================== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #10B981, #F59E0B);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  background: var(--bg-card-hover);
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.2);
}

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

.feature-icon-wrap {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-xs);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--border-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  color: var(--accent-green);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.25);
}

.feature-card:nth-child(2) .feature-icon-wrap {
  background: rgba(245, 158, 11, 0.12);
  border-color: var(--border-orange);
  color: var(--accent-orange);
  box-shadow: 0 0 15px rgba(245, 158, 11, 0.25);
}

.feature-card:nth-child(3) .feature-icon-wrap {
  background: rgba(16, 185, 129, 0.12);
  border-color: var(--border-highlight);
  color: var(--accent-green);
}

.feature-card h3 {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

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

.feature-bullets li {
  font-size: 0.86rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.feature-bullets li svg {
  color: var(--accent-green);
  flex-shrink: 0;
}

/* ===================================================================
   流媒体与 AI 支持图卡
=================================================================== */
.unlock-wrapper {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 38px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.unlock-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
}

.unlock-column h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 1.22rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.unlock-column p.sub-desc {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 22px;
}

.service-pill-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.service-pill {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  transition: var(--transition);
}

.service-pill:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-highlight);
  transform: translateX(4px);
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.15);
}

.service-badge-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 800;
  font-size: 0.88rem;
  flex-shrink: 0;
}

.pill-netflix { background: #e50914; color: #fff; }
.pill-youtube { background: #ff0000; color: #fff; }
.pill-disney  { background: #113ccf; color: #fff; }
.pill-hbo     { background: #4c1d95; color: #fff; }
.pill-chatgpt { background: #10a37f; color: #fff; }
.pill-claude  { background: #d97706; color: #fff; }
.pill-midj    { background: #0284c7; color: #fff; }
.pill-gemini  { background: #4f46e5; color: #fff; }

.service-info .name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.service-info .status {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent-green);
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 8px var(--accent-green);
}

/* ===================================================================
   价格套餐对比表
=================================================================== */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.pricing-card.featured {
  border-color: var(--accent-green);
  background: linear-gradient(180deg, rgba(16, 185, 129, 0.08) 0%, rgba(13, 19, 51, 0.95) 100%);
  box-shadow: 0 0 35px rgba(16, 185, 129, 0.2);
  transform: scale(1.02);
}

.pricing-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.25);
}

.pricing-card.featured:hover {
  transform: scale(1.02) translateY(-5px);
}

.pricing-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-green);
  color: #0A0E27;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 800;
  padding: 3px 14px;
  border-radius: var(--radius-xs);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  box-shadow: 0 0 15px rgba(16, 185, 129, 0.6);
}

.pricing-header {
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 22px;
  margin-bottom: 22px;
}

.plan-name {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 6px;
}

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

.price-wrap {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 16px 0 4px;
}

.price-currency {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent-green);
}

.price-number {
  font-family: var(--font-mono);
  font-size: 2.8rem;
  font-weight: 800;
  letter-spacing: -1px;
}

.price-period {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.pricing-features {
  list-style: none;
  flex-grow: 1;
  margin-bottom: 28px;
}

.pricing-features li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.pricing-features li svg {
  color: var(--accent-green);
  flex-shrink: 0;
}

.pricing-features li.disabled {
  color: var(--text-muted);
  text-decoration: line-through;
}

.pricing-features li.disabled svg {
  color: var(--text-muted);
}

/* ===================================================================
   用户评价
=================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-card:hover {
  border-color: var(--border-highlight);
  transform: translateY(-4px);
  box-shadow: 0 0 20px rgba(16, 185, 129, 0.15);
}

.review-stars {
  color: var(--accent-orange);
  display: flex;
  gap: 4px;
  margin-bottom: 14px;
  font-size: 0.9rem;
}

.review-text {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.65;
  margin-bottom: 20px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--border-subtle);
  padding-top: 16px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-xs);
  background: linear-gradient(135deg, #10B981, #F59E0B);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #0A0E27;
  font-size: 0.9rem;
}

.author-meta .author-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-primary);
}

.author-meta .author-title {
  font-size: 0.76rem;
  color: var(--text-muted);
}

/* ===================================================================
   常见问题 FAQ
=================================================================== */
.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-color);
  border-radius: var(--radius-xs);
  overflow: hidden;
  transition: var(--transition);
}

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

.faq-item summary {
  padding: 18px 22px;
  font-size: 1.02rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

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

.faq-icon {
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
  color: var(--accent-green);
  flex-shrink: 0;
}

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

.faq-content {
  padding: 0 22px 20px;
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.7;
  border-top: 1px solid var(--border-subtle);
  padding-top: 14px;
}

/* ===================================================================
   底部行动呼唤 CTA Banner
=================================================================== */
.cta-banner {
  margin: 50px 0;
  padding: 55px 36px;
  background: radial-gradient(circle at center, rgba(16, 185, 129, 0.15) 0%, rgba(13, 19, 51, 0.95) 75%);
  border: 1px solid var(--border-highlight);
  border-radius: var(--radius-md);
  text-align: center;
  box-shadow: 0 0 35px rgba(16, 185, 129, 0.18);
}

.cta-banner h2 {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.2vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 14px;
}

.cta-banner p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 600px;
  margin: 0 auto 28px;
}

/* ===================================================================
   页脚 (严格只保留四个标题)
=================================================================== */
.footer {
  border-top: 1px solid var(--border-color);
  background: #080B1F;
  padding: 44px 0 28px;
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 36px;
  list-style: none;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  padding: 5px 8px;
  border-radius: var(--radius-xs);
}

.footer-nav a:hover {
  color: var(--accent-green);
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.6);
}

.footer-copyright {
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.8rem;
  font-family: var(--font-mono);
}

/* ===================================================================
   独立子页面样式 (关于我们 / 服务条款 / 隐私政策 / 网站地图 / 知识科普)
=================================================================== */
.page-header {
  padding: 60px 0 36px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: rgba(13, 19, 51, 0.4);
  position: relative;
  z-index: 1;
}

.page-header h1 {
  font-family: var(--font-mono);
  font-size: 2.2rem;
  font-weight: 700;
  margin-bottom: 10px;
  text-shadow: 0 0 20px rgba(16, 185, 129, 0.5);
}

.page-header p {
  color: var(--text-muted);
  font-size: 0.96rem;
}

.page-content {
  padding: 50px 0;
  max-width: 900px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.content-block {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 32px 28px;
  margin-bottom: 26px;
  line-height: 1.8;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.content-block h2 {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.content-block h3 {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 18px 0 8px;
}

.content-block p {
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.content-block ul, .content-block ol {
  color: var(--text-secondary);
  padding-left: 22px;
  margin-bottom: 16px;
}

.content-block li {
  margin-bottom: 6px;
}

.alert-box {
  padding: 16px 18px;
  border-radius: var(--radius-xs);
  margin: 18px 0;
  font-size: 0.9rem;
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-left: 3px solid var(--accent-orange);
  color: #fed7aa;
}

.alert-info {
  background: rgba(16, 185, 129, 0.1);
  border-left: 3px solid var(--accent-green);
  color: #a7f3d0;
}

/* 网站地图卡片 */
.sitemap-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.sitemap-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
}

.sitemap-card h3 {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.sitemap-card ul {
  list-style: none;
}

.sitemap-card li {
  margin-bottom: 10px;
}

.sitemap-card a {
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.92rem;
}

.sitemap-card a:hover {
  color: var(--accent-green);
  transform: translateX(4px);
}

/* ===================================================================
   响应式媒体查询
=================================================================== */
@media (max-width: 992px) {
  .hero-grid-split {
    grid-template-columns: 1fr;
    gap: 36px;
    text-align: center;
  }

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

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

  .hero-cta-group {
    justify-content: center;
  }

  .hero-guarantee {
    justify-content: center;
  }

  .features-grid,
  .pricing-grid,
  .reviews-grid {
    grid-template-columns: 1fr;
    max-width: 580px;
    margin-left: auto;
    margin-right: auto;
  }

  .pricing-card.featured {
    transform: none;
  }
  .pricing-card.featured:hover {
    transform: translateY(-5px);
  }

  .unlock-grid {
    grid-template-columns: 1fr;
    gap: 26px;
  }

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

  .sitemap-grid {
    grid-template-columns: 1fr;
  }
}

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

  .hero {
    padding: 50px 0 36px;
  }

  .hero-title {
    font-size: 2.1rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
    min-height: 48px;
  }

  .hero-guarantee {
    flex-direction: column;
    gap: 8px;
  }

  .neuron-core-card {
    width: 300px;
    height: 300px;
  }

  .stats-bar {
    grid-template-columns: 1fr;
    gap: 14px;
    padding: 16px;
  }

  .unlock-wrapper {
    padding: 22px 16px;
  }

  .service-pill-grid {
    grid-template-columns: 1fr;
  }

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

  .content-block {
    padding: 22px 16px;
  }
}

/* ===================================================================
   SEO 文章页面专用样式 (面包屑 / 文章主体 / 侧边栏 / 标签)
=================================================================== */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

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

.breadcrumb a:hover {
  color: var(--accent-green);
}

.breadcrumb-separator {
  color: var(--border-highlight);
}

.article-header-wrap {
  margin-bottom: 30px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.article-category-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-xs);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid var(--border-highlight);
  color: var(--accent-green);
  margin-bottom: 14px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.article-title {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 16px;
  color: #ffffff;
  text-shadow: 0 0 20px rgba(16, 185, 129, 0.3);
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-body {
  font-size: 1.02rem;
  line-height: 1.85;
  color: var(--text-secondary);
}

.article-body h2 {
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  margin: 36px 0 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
}

.article-body h2::before {
  content: "§";
  color: var(--accent-green);
  font-size: 1.2rem;
}

.article-body h3 {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-orange);
  margin: 24px 0 12px;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  padding-left: 24px;
  margin-bottom: 20px;
}

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

.article-body strong {
  color: #ffffff;
  font-weight: 600;
}

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

.article-body a:hover {
  color: #34d399;
  text-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.article-body blockquote {
  background: rgba(16, 185, 129, 0.06);
  border-left: 4px solid var(--accent-green);
  padding: 18px 22px;
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  margin: 24px 0;
  font-size: 0.96rem;
  color: #e2e8f0;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(245, 158, 11, 0.1) 100%);
  border: 1.5px solid var(--border-highlight);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0 20px;
  box-shadow: 0 0 30px rgba(16, 185, 129, 0.15);
}

.article-cta-box h3 {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  color: #ffffff;
  margin-bottom: 10px;
}

.article-cta-box p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto 20px;
}

/* 知识库首页文章卡片列表 */
.articles-catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 30px;
}

.article-catalog-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.article-catalog-card:hover {
  transform: translateY(-5px);
  border-color: var(--border-highlight);
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.2);
}

.article-card-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent-green);
  background: rgba(16, 185, 129, 0.1);
  padding: 2px 8px;
  border-radius: var(--radius-xs);
  display: inline-block;
  margin-bottom: 12px;
  width: fit-content;
}

.article-card-title {
  font-family: var(--font-mono);
  font-size: 1.12rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
  color: #ffffff;
}

.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;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 12px;
}

.article-card-footer a {
  color: var(--accent-green);
  font-weight: 600;
}

.article-card-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 992px) {
  .articles-catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .articles-catalog-grid {
    grid-template-columns: 1fr;
  }
}

/* ===================================================================
   无障碍：系统减弱动态效果 (prefers-reduced-motion)
   保障前庭功能障碍与动效敏感用户的舒适阅读体验
=================================================================== */
@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;
  }
  .bg-synapse-wire,
  .bg-synapse-node,
  .glow-orb,
  .totoro-discharge,
  .synapse-rotate,
  .synapse-rotate-rev,
  .core-pulse-node,
  .pulse-glow {
    animation: none !important;
  }
}