/* ==========================================================================
   狗狗加速 GouGouJiaSu - 极简极速原生样式表
   0外部依赖 · 纯原生现代CSS · 全平台响应式 · 秒开加载
   ========================================================================== */

:root {
  --bg-primary: #0B0F0C;
  --bg-secondary: #121A14;
  --bg-card: rgba(18, 26, 20, 0.78);
  --bg-card-hover: rgba(28, 42, 31, 0.9);
  --border-color: rgba(200, 255, 61, 0.15);
  --border-focus: rgba(200, 255, 61, 0.55);
  
  --text-main: #FFFFFF;
  --text-muted: #A3B1A6;
  --text-dim: #5C6B5F;
  
  --accent-cyan: #C8FF3D;
  --accent-blue: #C8FF3D;
  --accent-purple: #A3E635;
  --accent-gradient: linear-gradient(135deg, #C8FF3D 0%, #A3E635 100%);
  --accent-glow: 0 0 28px rgba(200, 255, 61, 0.55), 0 0 50px rgba(200, 255, 61, 0.25);
  
  --price-highlight: #C8FF3D;
  --success-color: #C8FF3D;
  --badge-bg: rgba(200, 255, 61, 0.08);
  --badge-border: rgba(200, 255, 61, 0.28);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --container-max: 1320px;
  --transition-fast: 0.25s ease;
  
  --font-num: 'Space Grotesk', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-sc: 'Noto Sans SC', system-ui, -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

/* 基础重置与排版防撑破 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-sc);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  background-color: #0B0F0C;
  background-image: 
    linear-gradient(rgba(200, 255, 61, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 255, 61, 0.05) 1px, transparent 1px);
  background-size: 72px 72px;
  background-attachment: fixed;
  position: relative;
  overflow-wrap: break-word;
  word-break: break-word;
}

p, h1, h2, h3, h4, .feature-text, .faq-answer, .article-body {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* 无障碍：跳过导航入口 (Skip Link) */
.skip-link {
  position: absolute;
  top: -120px;
  left: 20px;
  background: var(--accent-cyan);
  color: #0B0F0C;
  padding: 12px 24px;
  font-weight: 800;
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(200, 255, 61, 0.6);
  transition: top 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* 无障碍：全局键盘焦点清晰轮廓 */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent-cyan) !important;
  outline-offset: 3px !important;
  box-shadow: 0 0 14px rgba(200, 255, 61, 0.65) !important;
}

/* 锚点跳转防吸顶页眉遮挡 (页眉高度 76px) */
section[id],
article[id],
div[id],
.hero-section,
.features-section,
.media-ai-section,
.pricing-section,
.testimonials-section,
.faq-section,
.subpage-card {
  scroll-margin-top: 88px;
}

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

img, svg {
  vertical-align: middle;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 全屏 Canvas 速度线背景 (fixed 定位，60fps requestAnimationFrame) */
#speedCanvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
  pointer-events: none;
}

/* 导航栏 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: rgba(11, 15, 12, 0.88);
  border-bottom: 1px solid rgba(200, 255, 61, 0.15);
}

.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.brand-icon {
  width: 38px;
  height: 38px;
  background: var(--accent-cyan);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #0B0F0C;
  box-shadow: 0 0 16px rgba(200, 255, 61, 0.5);
}

.brand-icon svg {
  fill: #0B0F0C;
  stroke: #0B0F0C;
}

.brand-name {
  color: #FFFFFF;
  font-weight: 900;
  font-size: 1.25rem;
}

.brand-sub {
  font-family: var(--font-num);
  font-size: 0.75rem;
  color: #0B0F0C;
  background: var(--accent-cyan);
  margin-left: 6px;
  font-weight: 800;
  padding: 2px 7px;
  border-radius: 4px;
  letter-spacing: 0.08em;
}

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

.nav-link {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 6px 0;
  position: relative;
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-cyan);
  text-shadow: 0 0 10px rgba(200, 255, 61, 0.4);
}

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

/* 按钮通用规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 10px 22px;
  min-height: 44px;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  white-space: nowrap;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent-cyan);
  color: #0B0F0C;
  border-color: var(--accent-cyan);
  box-shadow: 0 4px 20px rgba(200, 255, 61, 0.4);
}

.btn-primary:hover {
  transform: translateY(-3px);
  background: #d6ff5c;
  border-color: #d6ff5c;
  box-shadow: 0 0 32px rgba(200, 255, 61, 0.75), 0 0 60px rgba(200, 255, 61, 0.35);
  color: #0B0F0C;
}

.btn-secondary {
  background: transparent;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

.btn-secondary:hover {
  background: rgba(200, 255, 61, 0.12);
  border-color: #FFFFFF;
  color: #FFFFFF;
  box-shadow: 0 0 24px rgba(200, 255, 61, 0.45);
  transform: translateY(-3px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.1rem;
  min-height: 52px;
}

.btn-block {
  width: 100%;
}

/* 胶囊按钮标准样式 */
.btn-capsule-solid {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 36px;
  font-family: var(--font-sc);
  font-weight: 900;
  font-size: 1.1rem;
  background-color: var(--accent-cyan);
  color: #0B0F0C;
  border: 2px solid var(--accent-cyan);
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(200, 255, 61, 0.4);
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.btn-capsule-solid:hover {
  transform: translateY(-4px);
  box-shadow: 0 0 32px rgba(200, 255, 61, 0.75), 0 0 60px rgba(200, 255, 61, 0.35);
  background-color: #d6ff5c;
  color: #0B0F0C;
}

.btn-capsule-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px 34px;
  font-family: var(--font-sc);
  font-weight: 700;
  font-size: 1.05rem;
  background: transparent;
  color: var(--accent-cyan);
  border: 1.5px solid var(--accent-cyan);
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-capsule-outline:hover {
  transform: translateY(-4px);
  background: rgba(200, 255, 61, 0.12);
  box-shadow: 0 0 24px rgba(200, 255, 61, 0.45);
  color: #FFFFFF;
  border-color: #FFFFFF;
}

/* ==========================================================================
   【风格 01 · 电光疾速】首屏固定左右两栏（移动端折叠单栏）
   ========================================================================== */
.hero-section {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  padding: 60px 0 70px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  align-items: center;
  gap: 50px;
}

/* 左栏布局自上而下 */
.hero-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

/* 1. eyebrow 小字与闪烁小方块 */
.eyebrow-wrapper {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(200, 255, 61, 0.08);
  border: 1px solid rgba(200, 255, 61, 0.28);
  margin-bottom: 24px;
}

.blink-cube {
  width: 8px;
  height: 8px;
  background-color: var(--accent-cyan);
  box-shadow: 0 0 10px var(--accent-cyan);
  animation: blinkCube 1s infinite steps(2, start);
}

@keyframes blinkCube {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.15; transform: scale(0.7); }
}

.eyebrow-text {
  font-family: var(--font-num);
  font-weight: 700;
  font-size: 0.85rem;
  color: var(--accent-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* 2. 超大标题「全网加速，快过闪电」+ 内联动效徽章 */
.hero-headline {
  font-family: var(--font-sc);
  font-weight: 900;
  font-size: clamp(2.3rem, 4.8vw, 4.2rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  margin-bottom: 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
}

.highlight-neon {
  color: var(--accent-cyan);
  text-shadow: 0 0 28px rgba(200, 255, 61, 0.45);
}

/* 标题行内右侧内联一枚动效徽章：荧光绿虚线圆环匀速旋转，中心一颗脉冲缩放的闪电 */
.headline-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  position: relative;
  vertical-align: middle;
  flex-shrink: 0;
}

.badge-ring {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px dashed var(--accent-cyan);
  box-shadow: 0 0 14px rgba(200, 255, 61, 0.35);
  animation: ringRotate 8s linear infinite;
}

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

.badge-lightning {
  position: relative;
  z-index: 2;
  width: 22px;
  height: 22px;
  fill: var(--accent-cyan);
  filter: drop-shadow(0 0 10px var(--accent-cyan));
  animation: lightningPulse 1.2s ease-in-out infinite alternate;
}

@keyframes lightningPulse {
  0% { transform: scale(0.85); opacity: 0.8; }
  100% { transform: scale(1.22); opacity: 1; filter: drop-shadow(0 0 18px var(--accent-cyan)); }
}

/* 3. 副标题与简介 */
.hero-subhead {
  font-size: clamp(1.02rem, 1.5vw, 1.18rem);
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 620px;
  margin-bottom: 28px;
  font-weight: 400;
}

.hero-intro-card {
  max-width: 620px;
  margin-bottom: 32px;
  background: rgba(18, 26, 20, 0.75);
  border: 1px solid rgba(200, 255, 61, 0.2);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  backdrop-filter: blur(8px);
}

.hero-intro-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-cyan);
  margin-bottom: 6px;
  letter-spacing: 0.05em;
}

.hero-subtitle {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin: 0;
}

/* 4. 按钮两枚 */
.hero-btn-group {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

/* 5. 下方三列数据 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  width: 100%;
  max-width: 620px;
  padding-top: 30px;
  border-top: 1px solid rgba(200, 255, 61, 0.15);
}

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

.stat-number {
  font-family: var(--font-num);
  font-weight: 900;
  font-size: clamp(1.8rem, 2.6vw, 2.3rem);
  line-height: 1;
  color: var(--accent-cyan);
  text-shadow: 0 0 20px rgba(200, 255, 61, 0.35);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* ==========================================================================
   右栏：赛博机械柴犬 SVG 主视觉及常驻动画
   ========================================================================== */
.hero-right {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.mecha-dog-container {
  position: relative;
  width: 100%;
  max-width: 560px;
  height: 560px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ⑥ 犬身背后一圈光晕 2.6s 呼吸缩放 */
.dog-aura-glow {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(200, 255, 61, 0.28) 0%, rgba(200, 255, 61, 0.08) 50%, transparent 70%);
  filter: blur(28px);
  z-index: 1;
  animation: auraBreath 2.6s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes auraBreath {
  0% { transform: scale(0.85); opacity: 0.4; }
  100% { transform: scale(1.18); opacity: 0.85; filter: blur(34px); }
}

/* 柴犬 SVG 核心画板 */
.mecha-svg {
  position: relative;
  z-index: 3;
  width: 100%;
  height: 100%;
  overflow: visible;
}

/* ① 两圈虚线能量环以 9s / 13s 反向匀速旋转，环上各带一颗信号点 */
.energy-ring-outer {
  transform-origin: 280px 280px;
  animation: ringSpinCW 9s linear infinite;
}

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

.energy-ring-inner {
  transform-origin: 280px 280px;
  animation: ringSpinCCW 13s linear infinite;
}

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

/* ③ 整个犬身每 3.8s 向前冲刺 16px 并回弹 */
.dog-body-lunge {
  transform-origin: 280px 280px;
  animation: dogLunge 3.8s cubic-bezier(0.22, 1, 0.36, 1) infinite;
}

@keyframes dogLunge {
  0% { transform: translateX(0); }
  10% { transform: translateX(16px); }
  20% { transform: translateX(-3px); }
  30% { transform: translateX(1px); }
  40%, 100% { transform: translateX(0); }
}

/* ② 护目镜内一条荧光扫描光带 1.4s 上下往复 */
.visor-scanline {
  animation: visorScan 1.4s ease-in-out infinite alternate;
}

@keyframes visorScan {
  0% { transform: translateY(-16px); opacity: 0.3; }
  50% { opacity: 1; }
  100% { transform: translateY(18px); opacity: 0.3; }
}

/* ② 左右镜片指示灯交替闪烁 */
.led-indicator-left {
  animation: ledBlinkL 1.2s infinite steps(2, start);
}
.led-indicator-right {
  animation: ledBlinkR 1.2s infinite steps(2, start);
}

@keyframes ledBlinkL {
  0%, 49% { fill: #C8FF3D; filter: drop-shadow(0 0 6px #C8FF3D); opacity: 1; }
  50%, 100% { fill: #1B331A; opacity: 0.3; }
}

@keyframes ledBlinkR {
  0%, 49% { fill: #1B331A; opacity: 0.3; }
  50%, 100% { fill: #C8FF3D; filter: drop-shadow(0 0 6px #C8FF3D); opacity: 1; }
}

/* ④ 脚下两束喷焰以 0.2s 周期快速伸缩闪烁 */
.thruster-flame {
  transform-origin: center top;
  animation: flameFlicker 0.2s infinite ease-in-out alternate;
}

@keyframes flameFlicker {
  0% { transform: scaleY(0.72) scaleX(0.85); opacity: 0.65; }
  100% { transform: scaleY(1.35) scaleX(1.15); opacity: 1; filter: drop-shadow(0 0 16px #C8FF3D); }
}

/* ⑤ 身后 4-5 条速度流线以约 1s 周期循环流动 */
.back-streamline {
  animation: streamFlow 1s linear infinite;
}

@keyframes streamFlow {
  0% { stroke-dashoffset: 80; opacity: 0.1; }
  50% { opacity: 0.95; }
  100% { stroke-dashoffset: -80; opacity: 0.1; }
}

/* ⑦ 两只小闪电在犬身周围缓慢上下漂浮 */
.float-bolt-1 {
  animation: floatBoltOne 2.6s ease-in-out infinite alternate;
}
.float-bolt-2 {
  animation: floatBoltTwo 3.2s ease-in-out infinite alternate;
}

@keyframes floatBoltOne {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-8px, -18px) rotate(-6deg); }
}

@keyframes floatBoltTwo {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(10px, 16px) rotate(8deg); }
}

/* 兼容性辅助类 */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--accent-cyan);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.2rem, 5.5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.03em;
  margin-bottom: 22px;
  color: #ffffff;
}

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

.plan-original-price {
  font-size: 0.9rem;
  color: var(--text-dim);
  text-decoration: line-through;
  margin-right: 6px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 35px;
}

.hero-trust-badges {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 28px;
  flex-wrap: wrap;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  width: 100%;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.trust-item svg {
  color: var(--accent-cyan);
}

/* 核心板块通用头部 */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 52px;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.8vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 14px;
  color: #ffffff;
  letter-spacing: -0.02em;
}

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

/* 产品核心优势 (3个图文卡片) */
.features-section {
  padding: 70px 0;
}

.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: 38px 30px;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
}

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

.feature-icon-box {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  margin-bottom: 24px;
}

.feature-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.feature-text {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.feature-list {
  list-style: none;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: 8px;
}

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

/* 流媒体与 AI 支持矩阵 */
.media-ai-section {
  padding: 70px 0;
}

.media-ai-container {
  background: linear-gradient(180deg, rgba(17, 24, 39, 0.85) 0%, rgba(15, 23, 42, 0.6) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px 36px;
}

.matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 36px;
}

.matrix-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 22px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: all var(--transition-fast);
}

.matrix-card:hover {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(6, 182, 212, 0.4);
  transform: translateY(-3px);
}

.matrix-logo {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.matrix-logo.openai { background: #10a37f; color: #fff; }
.matrix-logo.claude { background: #d97706; color: #fff; }
.matrix-logo.youtube { background: #ef4444; color: #fff; }
.matrix-logo.netflix { background: #e50914; color: #fff; }
.matrix-logo.disney { background: #113ccf; color: #fff; }
.matrix-logo.tiktok { background: #000000; color: #00f2fe; border: 1px solid #333; }
.matrix-logo.midjourney { background: #2563eb; color: #fff; }
.matrix-logo.games { background: #7c3aed; color: #fff; }

.matrix-info h4 {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 4px;
}

.matrix-info p {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 价格对比表 */
.pricing-section {
  padding: 80px 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 34px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-fast);
}

.pricing-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-6px);
}

.pricing-card.popular {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.9) 0%, rgba(15, 23, 42, 0.9) 100%);
  border: 2px solid var(--accent-cyan);
  box-shadow: 0 10px 30px rgba(6, 182, 212, 0.2);
  transform: scale(1.03);
}

.pricing-card.popular:hover {
  transform: scale(1.05) translateY(-4px);
  box-shadow: 0 16px 40px rgba(6, 182, 212, 0.35);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-gradient);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.plan-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  min-height: 38px;
  margin-bottom: 20px;
}

.plan-price-box {
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

.plan-price {
  font-size: 2.3rem;
  font-weight: 800;
  color: #fff;
  line-height: 1;
}

.plan-currency {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent-cyan);
  margin-right: 2px;
}

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

.plan-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 30px;
  flex-grow: 1;
}

.plan-features li {
  display: flex;
  align-items: center;
  gap: 10px;
}

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

/* 用户评价 */
.testimonials-section {
  padding: 70px 0;
}

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

.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;
}

.rating-stars {
  display: flex;
  gap: 4px;
  color: #fbbf24;
  margin-bottom: 16px;
}

.testimonial-text {
  font-size: 0.95rem;
  color: var(--text-main);
  line-height: 1.7;
  margin-bottom: 22px;
}

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

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
}

.user-meta h5 {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
}

.user-meta span {
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* 6个常见问题解答 (FAQ) */
.faq-section {
  padding: 70px 0 90px;
}

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

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

.faq-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255, 255, 255, 0.15);
}

details.faq-card {
  cursor: pointer;
}

details.faq-card summary {
  list-style: none;
  outline: none;
  user-select: none;
}

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

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

.faq-question {
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.faq-q-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: var(--radius-full);
  background: rgba(200, 255, 61, 0.15);
  color: var(--accent-cyan);
  font-size: 0.8rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.faq-answer {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* 底部 CTA 条 */
.bottom-cta-banner {
  background: linear-gradient(135deg, rgba(200, 255, 61, 0.12) 0%, rgba(18, 26, 20, 0.88) 50%, rgba(200, 255, 61, 0.08) 100%);
  border: 1px solid rgba(200, 255, 61, 0.3);
  border-radius: var(--radius-lg);
  padding: 48px 30px;
  text-align: center;
  margin-bottom: 70px;
}

.bottom-cta-banner h2,
.bottom-cta-banner h3 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.bottom-cta-banner p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto 28px;
}

/* 页脚 (只保留四个指定标题，新标签打开) */
.site-footer {
  background: #070a10;
  border-top: 1px solid var(--border-color);
  padding: 48px 0 36px;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
  text-align: center;
}

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

.footer-nav-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: #d1d5db;
  padding: 8px 12px;
  position: relative;
  transition: all var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--accent-cyan);
}

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

/* 子页面独立版式通用类 (About, Terms, Privacy, Sitemap) */
.subpage-hero {
  padding: 60px 0 40px;
  text-align: center;
  border-bottom: 1px solid var(--border-color);
  background: rgba(17, 24, 39, 0.4);
}

.subpage-content {
  padding: 50px 0 80px;
}

.subpage-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-bottom: 30px;
}

.subpage-card h2 {
  font-size: 1.6rem;
  color: #fff;
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.subpage-card p {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.subpage-card ul, .subpage-card ol {
  color: var(--text-muted);
  padding-left: 24px;
  margin-bottom: 20px;
  line-height: 1.8;
}

.subpage-card li {
  margin-bottom: 8px;
}

.highlight-box {
  background: rgba(6, 182, 212, 0.08);
  border-left: 4px solid var(--accent-cyan);
  padding: 18px 22px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 20px 0;
  color: #e2e8f0;
}

/* ==========================================================================
   知识科普 3x3 板块网格与阅读全文模态框专属样式
   ========================================================================== */

.wiki-grid-3x3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.wiki-block-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-fast);
  cursor: pointer;
  box-shadow: 0 4px 18px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(10px);
  text-decoration: none;
  color: inherit;
}

.wiki-block-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.wiki-block-card:hover {
  transform: translateY(-6px);
  background: var(--bg-card-hover);
  border-color: var(--border-focus);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.45), var(--accent-glow);
}

.wiki-block-card:hover::before {
  opacity: 1;
}

.block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
}

.block-num {
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.15);
  border: 1px solid rgba(6, 182, 212, 0.35);
  color: var(--accent-cyan);
}

.block-wordcount {
  font-size: 0.8rem;
  color: #fbbf24;
  font-weight: 600;
}

.block-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.45;
  margin-bottom: 14px;
  transition: color var(--transition-fast);
}

.wiki-block-card:hover .block-title {
  color: #38bdf8;
}

.block-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 22px;
  flex-grow: 1;
}

.block-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--accent-cyan);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-fast);
}

.wiki-block-card:hover .block-btn {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
  box-shadow: 0 4px 14px rgba(6, 182, 212, 0.35);
}

/* 点击进去才可以看见全文的模态阅读器 (纯CSS :target 秒开无刷新) */
.article-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(7, 10, 16, 0.9);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 9999;
  overflow-y: auto;
  padding: 30px 16px 60px;
}

.article-modal-overlay:target {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  animation: modalPopIn 0.25s ease-out;
}

@keyframes modalPopIn {
  from { opacity: 0; transform: scale(0.97); }
  to { opacity: 1; transform: scale(1); }
}

.modal-backdrop-close {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.modal-content-card {
  position: relative;
  z-index: 2;
  background: #111827;
  border: 1px solid rgba(6, 182, 212, 0.35);
  border-radius: var(--radius-lg);
  max-width: 860px;
  width: 100%;
  padding: 40px 36px;
  box-shadow: 0 25px 70px rgba(0, 0, 0, 0.7);
  margin-top: 20px;
}

.modal-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-color);
}

.modal-back-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--accent-cyan);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.1);
  border: 1px solid rgba(6, 182, 212, 0.3);
  transition: all var(--transition-fast);
}

.modal-back-btn:hover {
  background: rgba(6, 182, 212, 0.2);
  color: #fff;
  transform: translateX(-3px);
}

.modal-close-icon {
  font-size: 1.5rem;
  color: var(--text-dim);
  padding: 4px 10px;
  line-height: 1;
  transition: color var(--transition-fast);
}

.modal-close-icon:hover {
  color: #fff;
}

.modal-bottom-bar {
  margin-top: 36px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: center;
}

.article-title {
  font-size: clamp(1.4rem, 2.8vw, 1.85rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.35;
  margin-bottom: 14px;
}

.article-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.meta-tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.12);
  border: 1px solid rgba(6, 182, 212, 0.25);
  color: var(--accent-cyan);
  font-weight: 600;
}

.meta-wordcount {
  color: #fbbf24;
  font-weight: 600;
}

.article-body h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: #f1f5f9;
  margin: 26px 0 12px;
  padding-left: 12px;
  border-left: 3px solid var(--accent-cyan);
}

.article-body p {
  color: #d1d5db;
  font-size: 0.98rem;
  line-height: 1.85;
  margin-bottom: 16px;
  text-align: justify;
}

.article-body strong {
  color: #ffffff;
  font-weight: 700;
}

.article-internal-link {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
  font-weight: 600;
}

.article-internal-link:hover {
  color: #38bdf8;
  text-shadow: 0 0 8px rgba(56, 189, 248, 0.4);
}

.article-cta-box {
  margin-top: 26px;
  padding: 18px 24px;
  background: rgba(6, 182, 212, 0.06);
  border: 1px dashed rgba(6, 182, 212, 0.35);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.article-cta-text {
  font-size: 0.95rem;
  color: #e2e8f0;
  font-weight: 600;
}

/* 文章专属 FAQ 问答排版样式 */
.article-faq-section {
  margin-top: 32px;
  padding: 22px 24px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.article-faq-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-faq-item {
  margin-bottom: 18px;
  padding-bottom: 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.article-faq-item:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.article-faq-q {
  font-size: 1rem;
  font-weight: 700;
  color: #f3f4f6;
  margin-bottom: 8px;
  display: flex;
  align-items: flex-start;
  gap: 8px;
}

.faq-q-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  background: rgba(6, 182, 212, 0.18);
  color: var(--accent-cyan);
  font-size: 0.78rem;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
}

.article-faq-a {
  font-size: 0.92rem;
  color: var(--text-muted);
  line-height: 1.7;
  padding-left: 30px;
}

/* 深度相关推荐与交叉内链盒 */
.article-related-links {
  margin-top: 26px;
  padding: 16px 20px;
  background: rgba(6, 182, 212, 0.04);
  border-left: 3px solid var(--accent-cyan);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.article-related-title {
  font-size: 0.92rem;
  font-weight: 700;
  color: #e2e8f0;
  margin-bottom: 10px;
}

.article-related-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 20px;
  font-size: 0.88rem;
  padding-left: 0 !important;
  margin-bottom: 0 !important;
}

.article-related-list a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  font-weight: 500;
}

.article-related-list a:hover {
  color: #38bdf8;
}

/* ==========================================================================
   响应式设计与媒体查询 (@media)
   确保移动端手指点击友好、单列自适应排版
   ========================================================================== */

@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }
  
  .hero-left {
    align-items: center;
  }
  
  .hero-headline {
    justify-content: center;
  }
  
  .hero-subhead {
    margin-left: auto;
    margin-right: auto;
  }
  
  .hero-btn-group {
    justify-content: center;
  }
  
  .hero-stats {
    margin-left: auto;
    margin-right: auto;
  }
  
  .mecha-dog-container {
    max-width: 440px;
    height: 440px;
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pricing-card.popular {
    transform: none;
  }
  
  .pricing-card.popular:hover {
    transform: translateY(-6px);
  }

  .wiki-grid-3x3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .testimonials-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .faq-grid {
    grid-template-columns: 1fr;
  }
  
  .main-nav {
    display: none; /* 移动端精简化，聚焦CTA转化与秒开体验 */
  }
}

@media (max-width: 640px) {
  .nav-wrapper {
    height: 64px;
  }
  
  .brand-logo {
    font-size: 1.1rem;
  }
  
  .hero-section {
    padding: 30px 0 50px;
  }

  .hero-headline {
    font-size: 2.2rem;
  }

  .headline-badge {
    width: 44px;
    height: 44px;
  }

  .badge-lightning {
    width: 18px;
    height: 18px;
  }
  
  .hero-btn-group {
    flex-direction: column;
    width: 100%;
    gap: 14px;
  }
  
  .hero-btn-group a {
    width: 100%;
    min-height: 50px;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 18px;
    text-align: center;
  }

  .mecha-dog-container {
    max-width: 320px;
    height: 320px;
  }
  
  .hero-trust-badges {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
    padding-left: 10px;
  }
  
  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  
  .matrix-grid {
    grid-template-columns: 1fr;
  }

  .wiki-grid-3x3 {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .modal-content-card {
    padding: 24px 18px;
    margin-top: 10px;
  }
  
  .media-ai-container {
    padding: 24px 18px;
  }
  
  .subpage-card {
    padding: 24px 18px;
  }
  
  .footer-nav-list {
    flex-direction: column;
    gap: 16px;
  }
  
  /* 移动端加大手指点触热区 */
  .btn {
    min-height: 48px;
    font-size: 1rem;
  }
  
  .footer-nav-link {
    font-size: 1rem;
    padding: 8px 16px;
  }
}

/* ==========================================================================
   文章独立页面专属排版与面包屑导航
   ========================================================================== */
.breadcrumbs-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-dim);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.breadcrumbs-bar a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.breadcrumbs-bar a:hover {
  color: var(--accent-cyan);
}

.breadcrumbs-separator {
  color: var(--text-dim);
}

.article-page-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 44px 38px;
  margin-bottom: 40px;
}

@media (max-width: 640px) {
  .article-page-card {
    padding: 24px 18px;
  }
}

/* 文章专属 details / summary FAQ 重置 */
details.article-faq-item summary {
  list-style: none;
  outline: none;
  cursor: pointer;
  user-select: none;
}

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

/* ==========================================================================
   无障碍：减弱动画媒体查询 (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;
  }

  .blink-cube,
  .badge-ring,
  .badge-lightning,
  .dog-aura-glow,
  .energy-ring-outer,
  .energy-ring-inner,
  .dog-body-lunge,
  .visor-scanline,
  .led-indicator-left,
  .led-indicator-right,
  .thruster-flame,
  .back-streamline,
  .float-bolt-1,
  .float-bolt-2 {
    animation: none !important;
    transform: none !important;
  }

  #speedCanvas {
    display: none !important;
  }
}