/* ============================================
   ReeseAI - Tech Design System (Light Theme)
   北京青木睿思智能科技有限公司
   ============================================ */

/* 强制显示滚动条，防止页面跳转时因滚动条出现/消失导致页面右闪 */
html { overflow-y: scroll; }

:root {
  --bg-primary: #f4f7fb;
  --bg-secondary: #eaeef5;
  --bg-card: rgba(255, 255, 255, 0.75);
  --bg-glass: rgba(255, 255, 255, 0.5);
  --border-glow: rgba(0, 110, 180, 0.14);
  --border-hover: rgba(0, 110, 180, 0.35);

  --accent-cyan: #0084c8;
  --accent-blue: #0058cc;
  --accent-purple: #6d28d9;
  --accent-green: #059669;
  --accent-orange: #d97706;

  --text-primary: #1a2332;
  --text-secondary: #5a6578;
  --text-muted: #8a95a8;

  --gradient-cyan: linear-gradient(135deg, #0084c8, #0058cc);
  --gradient-tech: linear-gradient(135deg, #0084c8 0%, #6d28d9 100%);
  --gradient-dark: linear-gradient(180deg, #f4f7fb 0%, #eaeef5 100%);

  --shadow-glow: 0 0 30px rgba(0, 132, 200, 0.12);
  --shadow-card: 0 4px 24px rgba(20, 40, 80, 0.06);
  --shadow-hover: 0 12px 40px rgba(0, 132, 200, 0.15);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  /* 等宽栈末位用全站无衬线兜底：等宽字体均无中文字形，避免中文落成宋体；
     Consolas/Cascadia 优先于 Courier New，数字观感更现代 */
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', Consolas, 'Courier New', var(--font-sans);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scrollbar-gutter: stable;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: var(--transition); }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* === Animated Background === */
.tech-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  background: var(--bg-primary);
}

.tech-bg::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-image:
    linear-gradient(rgba(0, 110, 180, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 110, 180, 0.04) 1px, transparent 1px);
  background-size: 50px 50px;
  animation: gridMove 20s linear infinite;
}

.tech-bg::after {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at 30% 40%, rgba(0, 132, 200, 0.06) 0%, transparent 50%),
              radial-gradient(ellipse at 70% 60%, rgba(109, 40, 217, 0.04) 0%, transparent 50%);
  animation: blobMove 15s ease-in-out infinite alternate;
}

@keyframes gridMove {
  0% { transform: translate(0, 0); }
  100% { transform: translate(50px, 50px); }
}

@keyframes blobMove {
  0% { transform: translate(0, 0) rotate(0deg); }
  100% { transform: translate(-30px, 20px) rotate(60deg); }
}

/* === Navigation === */
.navbar {
  position: fixed;
  top: 0; left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  background: rgba(244, 247, 251, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-glow);
  /* 移除 transition: var(--transition); - 它会导致初次加载时从默认样式动画 */
  contain: layout style;  /* 隔离 navbar 布局，防止外部因素引起重排 */
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 2px 16px rgba(20, 40, 80, 0.06);
  transition: padding 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.nav-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--gradient-cyan);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  box-shadow: 0 0 20px rgba(0, 132, 200, 0.4);
}

.nav-logo .logo-text span {
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-menu a {
  font-size: 15px;
  color: var(--text-secondary);
  font-weight: 500;
  position: relative;
  padding: 4px 0;
  transition: none;  /* 禁用链接过渡，避免初次加载时 navbar 抖动 */
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient-cyan);
  /* transition: var(--transition); -- 禁用下划线动画 */
}

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

.nav-menu a:hover::after,
.nav-menu a.active::after {
  width: 100%;
}

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

.nav-cta {
  padding: 10px 24px;
  background: var(--gradient-cyan);
  color: #fff;
  font-weight: 600;
  border-radius: var(--radius-sm);
  font-size: 14px;
  transition: var(--transition);
  box-shadow: 0 0 20px rgba(0, 132, 200, 0.25);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0, 132, 200, 0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  width: 24px; height: 2px;
  background: var(--accent-cyan);
  transition: var(--transition);
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  border: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--gradient-cyan);
  color: #fff;
  box-shadow: 0 0 30px rgba(0, 132, 200, 0.2);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(0, 132, 200, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--accent-cyan);
  border: 1px solid var(--border-hover);
}

.btn-outline:hover {
  background: rgba(0, 132, 200, 0.1);
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-glow);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid rgba(139, 149, 167, 0.3);
}

.btn-ghost:hover {
  color: var(--accent-cyan);
  border-color: var(--border-hover);
}

/* === Sections === */
section { position: relative; z-index: 1; }

.section-padding { padding: 100px 0; }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
}

.section-header {
  text-align: center;
  margin-bottom: 40px;
}



.section-title {
  font-size: 42px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #1a2332 0%, #5a6578 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

/* === Glass Card === */
.glass-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
  opacity: 0;
  transition: var(--transition);
}

.glass-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

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

/* === Hero === */
.hero {
  /* 自适应内容：原设计稿写 min-height:100vh，但页面顶部已有全屏轮播，
     叠加后会留下一整屏空白；改为 max 限制，最小高度仅保证可读性 */
  min-height: 560px;
  display: flex;
  align-items: center;
  position: relative;
  padding: 80px 0 60px;
}

.hero-content {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 32px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-text h1 {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-text h1 .gradient-text {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text .hero-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 540px;
}

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

.hero-stats {
  display: flex;
  gap: 40px;
  margin-top: 48px;
}

.hero-stat .stat-num {
  font-size: 32px;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

.hero-stat .stat-label {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* === Hero Visual === */
.hero-visual {
  position: relative;
  height: 480px;
  display: flex;
  align-items: center;
  justify-content: center;
}

#heroCanvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero-orb {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 132, 200, 0.15) 0%, transparent 70%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: orbPulse 4s ease-in-out infinite;
  will-change: transform;
  z-index: 1;
}

.hero-orb::before,
.hero-orb::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border-glow);
  will-change: transform;
}

.hero-orb::before {
  width: 260px; height: 260px;
  animation: spinSlow 12s linear infinite;
  border-color: rgba(0, 132, 200, 0.2);
  border-top-color: var(--accent-cyan);
}

.hero-orb::after {
  width: 360px; height: 360px;
  animation: spinSlow 20s linear infinite reverse;
  border-color: rgba(109, 40, 217, 0.1);
  border-bottom-color: var(--accent-purple);
}

.hero-orb-core {
  width: 120px; height: 120px;
  background: var(--gradient-cyan);
  border-radius: 50%;
  box-shadow: 0 0 60px rgba(0, 132, 200, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: #fff;
  font-weight: 700;
  position: relative;
  z-index: 2;
}

@keyframes orbPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

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

/* === Product Grid === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.product-card .card-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 24px;
  background: rgba(0, 132, 200, 0.08);
  border: 1px solid var(--border-glow);
}

.product-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.product-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 20px;
}

.product-card .card-link {
  font-size: 14px;
  color: var(--accent-cyan);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: var(--transition);
}

.product-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-6px);
}

.product-card:hover .card-link {
  gap: 12px;
}

.product-card .card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 6px 12px;
  font-size: 11px;
  font-weight: 700;
  border-radius: 14px;
  z-index: 3;
  letter-spacing: 0.02em;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.product-card .card-badge::before {
  font-size: 12px;
  filter: drop-shadow(0 1px 1px rgba(0, 0, 0, 0.2));
}

/* === 热门徽章 — 红橙渐变 + 火焰图标 === */
.product-card .card-badge.hot {
  background: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
  color: #fff;
  border: 1px solid rgba(255, 107, 53, 0.5);
  animation: hotPulse 2s ease-in-out infinite;
}

.product-card .card-badge.hot::before {
  content: '🔥';
  animation: flameShake 1.5s ease-in-out infinite;
}

@keyframes hotPulse {
  0%, 100% { box-shadow: 0 4px 12px rgba(255, 107, 53, 0.3), 0 0 0 0 rgba(255, 107, 53, 0.4); }
  50% { box-shadow: 0 4px 16px rgba(255, 107, 53, 0.5), 0 0 0 6px rgba(255, 107, 53, 0); }
}

@keyframes flameShake {
  0%, 100% { transform: scale(1) rotate(0); }
  25% { transform: scale(1.15) rotate(-5deg); }
  50% { transform: scale(0.95) rotate(0); }
  75% { transform: scale(1.1) rotate(5deg); }
}

/* === 新品徽章 — 青蓝渐变 + 闪光图标 === */
.product-card .card-badge.new {
  background: linear-gradient(135deg, #0084c8 0%, #0058cc 100%);
  color: #fff;
  border: 1px solid rgba(0, 132, 200, 0.5);
  position: relative;
}

.product-card .card-badge.new::before {
  content: '✨';
  animation: sparkleRotate 2.5s ease-in-out infinite;
}

.product-card .card-badge.new::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  animation: shine 3s ease-in-out infinite;
}

@keyframes sparkleRotate {
  0%, 100% { transform: scale(1) rotate(0); }
  50% { transform: scale(1.2) rotate(180deg); }
}

@keyframes shine {
  0% { left: -100%; }
  50%, 100% { left: 100%; }
}

/* === 定制徽章 — 紫绿渐变 + 工具图标 === */
.product-card .card-badge.custom {
  background: linear-gradient(135deg, #6d28d9 0%, #059669 100%);
  color: #fff;
  border: 1px solid rgba(109, 40, 217, 0.5);
}

.product-card .card-badge.custom::before {
  content: '⚙️';
  animation: gearSpin 4s linear infinite;
}

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

/* === Solutions Section === */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.solution-card .sol-icon {
  width: 64px; height: 64px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  flex-shrink: 0;
}

.solution-card .sol-content h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 10px;
}

.solution-card .sol-content p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.solution-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* === News Section === */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.news-card {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.news-card .news-img {
  width: 100%; height: 180px;
  background: linear-gradient(135deg, #e8edf5, #dde6f0);
  position: relative;
  overflow: hidden;
}

.news-card .news-img::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.1), rgba(109, 40, 217, 0.1));
}

.news-card .news-body {
  padding: 24px;
}

.news-card .news-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(0, 132, 200, 0.1);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  font-size: 11px;
  color: var(--accent-cyan);
  margin-bottom: 12px;
}

.news-card h3 {
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-card .news-date {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.news-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

/* === Stats Bar === */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding: 60px 0;
}

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

.stat-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -16px; top: 50%;
  transform: translateY(-50%);
  width: 1px; height: 40px;
  background: var(--border-glow);
}

.stat-item .stat-value {
  font-size: 42px;
  font-weight: 800;
  font-family: var(--font-mono);
  background: var(--gradient-cyan);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.stat-item .stat-name {
  font-size: 14px;
  color: var(--text-secondary);
}

/* === CTA Section === */
.cta-section {
  text-align: center;
  padding: 80px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%;
  width: 200%; height: 200%;
  background: radial-gradient(ellipse at center, rgba(0, 132, 200, 0.05) 0%, transparent 60%);
  animation: blobMove 10s ease-in-out infinite alternate;
}

.cta-section h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 16px;
  position: relative;
}

.cta-section p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 32px;
  position: relative;
}

.cta-section .hero-buttons {
  justify-content: center;
  position: relative;
}

/* === Footer === */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-glow);
  padding: 60px 0 30px;
  position: relative;
  z-index: 1;
}

.footer-content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}

.footer-brand .footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  font-size: 14px;
  color: var(--text-secondary);
}

.footer-col ul li a:hover {
  color: var(--accent-cyan);
}

.footer-bottom {
  border-top: 1px solid var(--border-glow);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-bottom p {
  font-size: 13px;
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  width: 36px; height: 36px;
  border-radius: 8px;
  background: rgba(0, 132, 200, 0.05);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  color: var(--text-secondary);
}

.footer-social a:hover {
  color: var(--accent-cyan);
  border-color: var(--border-hover);
}

/* === Page Header === */
.page-header {
  padding: 160px 0 60px;
  text-align: center;
  position: relative;
}

.page-header h1 {
  font-size: 48px;
  font-weight: 800;
  margin-bottom: 16px;
}

.page-header p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* === Contact Form === */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
}

.contact-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.contact-info-item {
  display: flex;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-info-item .info-icon {
  width: 44px; height: 44px;
  border-radius: var(--radius-sm);
  background: rgba(0, 132, 200, 0.1);
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-info-item .info-text h5 {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-info-item .info-text p {
  font-size: 15px;
  color: var(--text-primary);
}

.contact-form-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
  font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  background: rgba(240, 244, 250, 0.5);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 15px;
  font-family: var(--font-sans);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 132, 200, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* === About Section === */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-text h2 {
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 24px;
}

.about-text p {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
}

.about-feature {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.about-feature .feature-icon {
  color: var(--accent-cyan);
  font-size: 20px;
  flex-shrink: 0;
}

.about-feature .feature-text h5 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.about-feature .feature-text p {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0;
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero-content { grid-template-columns: 1fr; }
  .hero-visual { display: none; }
  .product-grid { grid-template-columns: repeat(2, 1fr); }
  .solutions-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-content { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2)::after { display: none; }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: fixed;
    top: 64px; left: 0;
    width: 100%;
    background: rgba(240, 244, 250, 0.95);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border-glow);
  }

  .nav-menu.open { display: flex; }
  .nav-toggle { display: flex; }

  .hero-text h1 { font-size: 36px; }
  .section-title { font-size: 30px; }
  .product-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .footer-content { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .stat-item::after { display: none !important; }
  .form-row { grid-template-columns: 1fr; }
  .section-padding { padding: 60px 0; }
  .container { padding: 0 20px; }

  /* 轮播图：缩小标题与按钮，避免与底部指示器重叠 */
  .banner-content { padding: 24px 16px; }
  .banner-title { font-size: 32px !important; line-height: 1.2; }
  .banner-desc { font-size: 14px !important; margin: 12px 0 !important; }
  .banner-actions { gap: 8px; }
  .banner-actions .btn { padding: 10px 16px; font-size: 13px; }
  .banner-arrow { width: 40px; height: 40px; }
  .banner-indicators { padding: 0 12px 12px; gap: 4px; }
  .indicator-label { display: none; }
  .banner-indicator { flex: 1; }
  .banner-indicator .indicator-progress { display: block; }

  /* Hero 统计卡：窄屏换行，防止单项挤压竖排 */
  .hero-stats { flex-wrap: wrap; gap: 20px 24px; }
  .hero-stat { min-width: 40%; }
}

@media (max-width: 480px) {
  /* 极窄屏：紧凑容器、统计卡单列 */
  .container { padding: 0 16px; }
  .hero { padding: 56px 0 40px; min-height: 0; }
  .hero-text h1 { font-size: 28px; }
  .hero-text .hero-desc { font-size: 14px; line-height: 1.7; }
  .stats-bar { grid-template-columns: 1fr 1fr; gap: 12px; }
  .stat-item { padding: 16px 8px; }
  .stat-value { font-size: 28px !important; }
  .banner-track { aspect-ratio: 16 / 18; }
  .banner-title { font-size: 26px !important; }
  .banner-actions .btn { width: 100%; }
  .product-thumbnails { gap: 6px; }
  .product-thumbnails .thumb { width: 60px; height: 60px; }
  .filter-btn { padding: 8px 12px; font-size: 13px; }
}

@media (max-width: 360px) {
  .nav-logo .logo-text { font-size: 14px; }
  .section-title { font-size: 24px; }
}

/* === Scroll Reveal === */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* === Scrollbar === */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: rgba(0, 132, 200, 0.2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0, 132, 200, 0.4); }

/* ============================================
   VFX LAYER — Overdrive Effects
   ============================================ */

/* === Custom Easing Variables === */
:root {
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.4, 0.64, 1);
}

/* === 1. Scroll Progress Bar === */
.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  width: 0%;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-cyan));
  background-size: 200% 100%;
  z-index: 9999;
  box-shadow: 0 0 12px rgba(0, 132, 200, 0.6);
  transition: width 0.1s linear;
  animation: progressShimmer 3s linear infinite;
}

@keyframes progressShimmer {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* === 2. Typewriter Effect === */
.typewriter {
  display: inline-block;
  border-right: 3px solid var(--accent-cyan);
  animation: blinkCursor 0.8s step-end infinite;
}

.typewriter.done {
  border-right: none;
  animation: none;
}

@keyframes blinkCursor {
  0%, 100% { border-right-color: var(--accent-cyan); }
  50% { border-right-color: transparent; }
}

/* === 3. 3D Card Tilt === */
.tilt-card {
  transform-style: preserve-3d;
  transition: transform 0.4s var(--ease-out-quart);
  will-change: transform;
}

.tilt-card .tilt-inner {
  transform: translateZ(30px);
  transform-style: preserve-3d;
}

.tilt-card .tilt-shine {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    circle at var(--shine-x, 50%) var(--shine-y, 50%),
    rgba(255, 255, 255, 0.08) 0%,
    transparent 50%
  );
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  z-index: 2;
}

.tilt-card:hover .tilt-shine {
  opacity: 1;
}

/* === 4. Enhanced Counter === */
.counter-glow {
  text-shadow: 0 0 20px rgba(0, 132, 200, 0.3);
  transition: text-shadow 0.3s;
}

.counter-glow.counting {
  text-shadow: 0 0 30px rgba(0, 132, 200, 0.6), 0 0 60px rgba(0, 132, 200, 0.3);
}

/* === 5. Page Transition === */
.page-transition {
  position: fixed;
  inset: 0;
  z-index: 10000;
  pointer-events: none;
  opacity: 0;
  background: radial-gradient(circle at center, rgba(0, 132, 200, 0.1) 0%, transparent 70%);
}

.page-transition.active {
  animation: pageFlash 0.6s var(--ease-out-expo);
}

@keyframes pageFlash {
  0% { opacity: 0; transform: scale(0.8); }
  30% { opacity: 1; transform: scale(1); }
  100% { opacity: 0; transform: scale(1.2); }
}

/* === 6. Cursor Trail === */
.cursor-trail {
  position: fixed;
  width: 20px; height: 20px;
  border: 2px solid var(--accent-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  transition: transform 0.15s var(--ease-out-quart), opacity 0.3s, width 0.2s, height 0.2s;
  opacity: 0;
  mix-blend-mode: screen;
}

.cursor-trail.visible {
  opacity: 0.6;
}

.cursor-trail.hover {
  width: 40px; height: 40px;
  border-color: var(--accent-purple);
  opacity: 0.8;
}

.cursor-dot {
  position: fixed;
  width: 6px; height: 6px;
  background: var(--accent-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 9998;
  transform: translate(-50%, -50%);
  box-shadow: 0 0 12px var(--accent-cyan);
  opacity: 0;
  transition: opacity 0.3s;
}

.cursor-dot.visible {
  opacity: 1;
}

/* === 7. Fullscreen Particle Canvas === */
#globalParticles {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* === 8. Reveal Variations === */
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: all 0.8s var(--ease-out-expo);
}

.reveal-left.active,
.reveal-right.active,
.reveal-scale.active {
  opacity: 1;
  transform: translate(0, 0) scale(1);
}

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s var(--ease-out-expo);
}

.stagger.active > * {
  opacity: 1;
  transform: translateY(0);
}

.stagger.active > *:nth-child(1) { transition-delay: 0ms; }
.stagger.active > *:nth-child(2) { transition-delay: 100ms; }
.stagger.active > *:nth-child(3) { transition-delay: 200ms; }
.stagger.active > *:nth-child(4) { transition-delay: 300ms; }
.stagger.active > *:nth-child(5) { transition-delay: 400ms; }
.stagger.active > *:nth-child(6) { transition-delay: 500ms; }

/* === 9. Glow Pulse for CTA === */
.glow-pulse {
  animation: glowPulse 2.5s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { box-shadow: 0 0 20px rgba(0, 132, 200, 0.2); }
  50% { box-shadow: 0 0 40px rgba(0, 132, 200, 0.5), 0 0 80px rgba(0, 132, 200, 0.2); }
}

/* === 10. Gradient Text Shimmer === */
.shimmer-text {
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple), var(--accent-cyan));
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmerMove 4s linear infinite;
}

@keyframes shimmerMove {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

/* === 11. Magnetic Button === */
.magnetic {
  transition: transform 0.3s var(--ease-out-quart);
  will-change: transform;
}

/* === Banner Carousel — 沉浸式全屏轮播 === */
.banner-carousel {
  position: relative;
  width: calc(100% - 48px);
  max-width: 1440px;
  margin: 92px auto 0;
  height: 560px;
  overflow: hidden;
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(20, 40, 80, 0.12), 0 0 0 1px var(--border-glow);
  isolation: isolate;
}

/* === 大屏适配：2K/4K 下 banner 全屏铺满，内容区放宽，消除两边留白 === */
@media (min-width: 1536px) {
  .banner-carousel {
    width: 100%;
    max-width: none;
    border-radius: 0;
    height: 620px;
  }
}

@media (min-width: 1920px) {
  .banner-carousel { height: 680px; }
  .container,
  .hero-content { max-width: 1560px; }
}

@media (min-width: 2560px) {
  .banner-carousel { height: 760px; }
  .container,
  .hero-content { max-width: 1720px; }
  .section-padding { padding: 100px 0; }
}

.banner-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
  --accent-glow: rgba(0, 132, 200, 0.4);
}

.banner-slide.active {
  opacity: 1;
  pointer-events: auto;
  z-index: 2;
}

/* === Banner Background with Ken Burns === */
.banner-bg {
  position: absolute;
  inset: 0;
  overflow: hidden;
}

.banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.0);
  transition: transform 6s cubic-bezier(0.4, 0, 0.2, 1);
}

.banner-slide.active .banner-bg img {
  transform: scale(1.08);
}

/* === Banner Overlay — 渐变遮罩提升文字可读性 === */
.banner-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  background:
    linear-gradient(90deg,
      rgba(10, 20, 35, 0.78) 0%,
      rgba(10, 20, 35, 0.55) 40%,
      rgba(10, 20, 35, 0.15) 75%,
      rgba(10, 20, 35, 0.05) 100%
    ),
    radial-gradient(ellipse at 30% 50%, var(--accent-glow) 0%, transparent 55%);
}

.banner-content {
  max-width: 640px;
  color: #fff;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.9s ease-out 0.3s, transform 0.9s ease-out 0.3s;
}

.banner-slide.active .banner-content {
  opacity: 1;
  transform: translateY(0);
}

.banner-title {
  font-size: 56px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #fff;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.banner-highlight {
  background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.75) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  display: inline-block;
}

.banner-highlight::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #fff 0%, rgba(255, 255, 255, 0.4) 100%);
  border-radius: 2px;
}

.banner-desc {
  font-size: 18px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 32px;
  max-width: 520px;
}

.banner-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-outline-light {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
  background: rgba(255, 255, 255, 0.18);
  border-color: rgba(255, 255, 255, 0.7);
  transform: translateY(-2px);
}

/* === Banner Arrows — 左右切换 === */
.banner-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.25);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  transition: var(--transition);
}

.banner-carousel:hover .banner-arrow {
  opacity: 1;
}

.banner-arrow:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-50%) scale(1.08);
}

.banner-arrow-prev { left: 24px; }
.banner-arrow-next { right: 24px; }

/* === Banner Indicators — 底部进度条 === */
.banner-indicators {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
  padding: 6px;
  background: rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 32px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.banner-indicator {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  border-radius: 20px;
  transition: var(--transition);
  overflow: hidden;
  font-family: var(--font-sans);
}

.banner-indicator .indicator-label {
  position: relative;
  z-index: 2;
}

.banner-indicator .indicator-progress {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.12);
  transform: translateX(-100%);
  transition: none;
}

.banner-indicator.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.2);
}

.banner-indicator.active .indicator-progress {
  background: linear-gradient(90deg, rgba(0, 132, 200, 0.6), rgba(0, 132, 200, 0.3));
  transform: translateX(0);
  animation: indicatorProgress 5s linear forwards;
}

@keyframes indicatorProgress {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(0); }
}

.banner-indicator:hover:not(.active) {
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.08);
}

/* === Banner Responsive === */
@media (max-width: 1024px) {
  .banner-carousel { height: 480px; }
  .banner-title { font-size: 42px; }
  .banner-desc { font-size: 16px; }
}

@media (max-width: 768px) {
  .banner-carousel {
    width: calc(100% - 24px);
    height: 420px;
    margin-top: 80px;
    border-radius: var(--radius-lg);
  }
  .banner-title { font-size: 32px; }
  .banner-desc { font-size: 14px; margin-bottom: 24px; }
  .banner-overlay {
    background: linear-gradient(180deg, rgba(10, 20, 35, 0.55) 0%, rgba(10, 20, 35, 0.85) 100%);
  }
  .banner-arrow { display: none; }
  .banner-indicator .indicator-label { display: none; }
  .banner-indicator { padding: 8px 14px; }
  .banner-content { max-width: 100%; }
}

@media (max-width: 480px) {
  .banner-carousel { height: 380px; }
  .banner-title { font-size: 26px; }
  .banner-actions { gap: 8px; }
  .banner-actions .btn,
  .banner-actions .btn-outline-light { padding: 10px 18px; font-size: 13px; }
}

/* === Card Image === */
.card-img {
  width: 100%;
  height: 180px;
  margin-bottom: 16px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.product-card:hover .card-img img {
  transform: scale(1.08);
}

.sol-img {
  width: 100%;
  height: 200px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
}

.sol-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.solution-card:hover .sol-img img {
  transform: scale(1.05);
}

.news-card .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.news-card:hover .news-img img {
  transform: scale(1.05);
}

/* === Technology Showcase === */
.tech-showcase-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.tech-showcase-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.tech-showcase-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-cyan);
  opacity: 0.6;
}

.tech-showcase-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.tech-showcase-card .tech-num {
  position: absolute;
  top: 20px; right: 28px;
  font-size: 48px;
  font-weight: 800;
  font-family: var(--font-mono);
  color: rgba(0, 132, 200, 0.08);
}

.tech-showcase-card .tech-icon {
  width: 56px; height: 56px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.1), rgba(109, 40, 217, 0.1));
  border: 1px solid var(--border-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.tech-showcase-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 8px;
}

.tech-showcase-card .tech-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
}

.tech-showcase-card .tech-features {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tech-showcase-card .tech-feature {
  padding: 4px 12px;
  background: rgba(0, 132, 200, 0.06);
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  font-size: 12px;
  color: var(--accent-cyan);
}

/* === Certification Grid === */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 28px 20px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.cert-card::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--gradient-cyan);
  opacity: 0;
  transition: var(--transition);
}

.cert-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.cert-card:hover::after {
  opacity: 1;
}

.cert-card .cert-icon {
  width: 48px; height: 48px;
  margin: 0 auto 14px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.1), rgba(109, 40, 217, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}

.cert-card .cert-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.5;
  margin-bottom: 6px;
}

.cert-card .cert-version {
  font-size: 12px;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
}

/* === Partner Grid === */
.partner-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.partner-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 28px 12px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.partner-item:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

/* === Application Systems Grid === */
.app-systems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.app-system-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.app-system-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: var(--gradient-cyan);
  opacity: 0.6;
  transition: var(--transition);
}

.app-system-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.app-system-card:hover::before {
  width: 100%;
  opacity: 0.03;
}

.app-system-card .app-num {
  font-size: 13px;
  font-family: var(--font-mono);
  color: var(--accent-cyan);
  margin-bottom: 8px;
}

.app-system-card .app-icon {
  font-size: 32px;
  margin-bottom: 16px;
}

.app-system-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.app-system-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.app-system-card .app-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.app-system-card .app-tag {
  padding: 3px 10px;
  background: rgba(0, 132, 200, 0.06);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  font-size: 11px;
  color: var(--text-secondary);
}

/* === Direction Cards (About page) === */
.direction-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 36px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.direction-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-cyan);
}

.direction-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.direction-card .dir-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.1), rgba(109, 40, 217, 0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
}

.direction-card h3 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}

.direction-card p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* === Products Page — 大幅Banner头部 === */
.page-header-banner {
  position: relative;
  min-height: 420px;
  display: flex;
  align-items: center;
  margin-top: 70px;
  padding: 80px 0;
  overflow: hidden;
}

.page-header-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.page-header-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: blur(2px) brightness(0.85);
}

.page-header-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(244, 247, 251, 0.92) 0%, rgba(234, 238, 245, 0.85) 50%, rgba(0, 132, 200, 0.15) 100%),
    radial-gradient(ellipse at top right, rgba(0, 132, 200, 0.15), transparent 60%);
}

.page-header-banner h1 {
  font-size: 52px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  background: linear-gradient(135deg, #1a2332 0%, #0058cc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.page-header-banner p {
  font-size: 17px;
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.product-quick-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 720px;
}

.quick-stat {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 20px 16px;
  text-align: center;
  transition: var(--transition);
}

.quick-stat:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.quick-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.quick-stat-label {
  font-size: 12px;
  color: var(--text-secondary);
}

/* === 产品筛选条 === */
.product-filter-section {
  padding: 24px 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-glow);
  position: sticky;
  top: 70px;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.product-filter {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: 24px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}

.filter-btn:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: var(--gradient-cyan);
  color: #fff;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 20px rgba(0, 132, 200, 0.3);
}

/* === 明星产品 — 顶部指标卡 === */
.featured-metrics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 48px;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-tech);
}

.metric-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.metric-icon {
  font-size: 28px;
  margin-bottom: 12px;
}

.metric-value {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 8px;
}

.metric-unit {
  font-size: 18px;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-left: 4px;
}

.metric-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* === 明星产品 — 主展示区 === */
.featured-product-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 32px;
}

.featured-product-main {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
  position: relative;
  overflow: hidden;
}

.featured-product-main::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--gradient-cyan);
}

.featured-product-image {
  position: relative;
  width: 100%;
  height: 320px;
  margin-bottom: 28px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.04), rgba(109, 40, 217, 0.04));
  display: flex;
  align-items: center;
  justify-content: center;
}

.featured-product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 24px;
  transition: transform 0.6s ease;
}

.featured-product-main:hover .featured-product-image img {
  transform: scale(1.05);
}

.featured-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 6px 14px;
  background: var(--gradient-cyan);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  border-radius: 20px;
  box-shadow: 0 4px 12px rgba(0, 132, 200, 0.3);
}

.featured-product-info h3 {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 8px;
}

.featured-product-tagline {
  font-size: 14px;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 16px;
}

.featured-product-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.featured-key-points {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.key-point {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-secondary);
}

.key-point .check {
  width: 20px;
  height: 20px;
  background: rgba(5, 150, 105, 0.1);
  color: var(--accent-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

/* === 明星产品 — 规格侧栏 === */
.featured-product-specs {
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
}

.featured-product-specs h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--accent-cyan);
}

.specs-list {
  display: flex;
  flex-direction: column;
  margin-bottom: 24px;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-glow);
}

.spec-row-last {
  border-bottom: none;
}

.spec-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.spec-value {
  font-size: 14px;
  font-weight: 600;
  color: var(--accent-cyan);
  /* 等宽字体不含中文字形，末位回退到全站无衬线，避免中文落成宋体 */
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', var(--font-sans);
}

.specs-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 16px;
  border-top: 1px solid var(--border-glow);
}

.specs-footer-tag {
  padding: 6px 12px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-glow);
  border-radius: 16px;
  font-size: 12px;
  color: var(--text-secondary);
}

/* === 全部产品 — 美化卡片 === */
.product-grid-beautified {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.product-grid-beautified .product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.product-grid-beautified .product-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

/* 分类徽章 — 品牌蓝渐变+玻璃质感，与右侧热门徽章呼应 */
.card-badge-top {
  position: absolute;
  top: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.94) 0%, rgba(0, 88, 204, 0.94) 100%);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 14px;
  font-size: 11px;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.02em;
  z-index: 2;
  box-shadow: 0 4px 14px rgba(0, 132, 200, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.22);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: var(--transition);
}

.product-card:hover .card-badge-top {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0, 132, 200, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.product-grid-beautified .card-img {
  margin: 0 0 16px 0;
  height: 200px;
  border-radius: 0;
}

.product-grid-beautified .card-body {
  padding: 0 24px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-grid-beautified .card-body h3 {
  font-size: 18px;
  margin-bottom: 10px;
}

.card-summary {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
  flex: 1;
}

.card-specs-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 16px;
}

.spec-tag {
  padding: 3px 10px;
  background: rgba(0, 132, 200, 0.06);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  font-size: 11px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.product-grid-beautified .product-card:hover .spec-tag {
  background: rgba(0, 132, 200, 0.12);
  color: var(--accent-cyan);
}

/* === LLM 大模型区 === */
.llm-featured {
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.04), rgba(109, 40, 217, 0.04));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin-bottom: 60px;
  position: relative;
  overflow: hidden;
}

.llm-featured::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--gradient-tech);
}

.llm-badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.llm-badge {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-glow);
  border-radius: 18px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  backdrop-filter: blur(8px);
}

.llm-header h3 {
  font-size: 32px;
  font-weight: 800;
  margin-bottom: 8px;
  background: linear-gradient(135deg, #1a2332, #0058cc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.llm-tagline {
  font-size: 16px;
  color: var(--accent-cyan);
  font-weight: 500;
  margin-bottom: 16px;
}

.llm-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  max-width: 720px;
  margin-bottom: 40px;
}

/* === Timeline 时间线 === */

/* === 发展历程（关于我们页，年份+里程碑竖向时间轴） === */
.dev-timeline {
  position: relative;
  max-width: 760px;
  margin: 0 auto;
}

.dev-year {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 32px;
  padding-bottom: 40px;
}

.dev-year:last-child {
  padding-bottom: 0;
}

/* 连接各年份的竖向渐变线 */
.dev-year::before {
  content: '';
  position: absolute;
  left: 69px;
  top: 52px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(180deg, rgba(0, 132, 200, 0.4), rgba(109, 40, 217, 0.15));
}

.dev-year:last-child::before {
  display: none;
}

.dev-year-badge {
  flex-shrink: 0;
  min-width: 140px;
  text-align: center;
  padding: 10px 18px;
  border-radius: 999px;
  background: var(--gradient-cyan);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 1px;
  box-shadow: 0 6px 16px rgba(0, 132, 200, 0.25);
  position: relative;
  z-index: 2;
}

.dev-milestones {
  list-style: none;
  padding: 8px 0 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dev-milestone {
  position: relative;
  padding-left: 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.dev-milestone::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--accent-cyan);
}

.dev-milestone-date {
  font-size: 12px;
  color: var(--accent-cyan);
  font-weight: 600;
  margin-right: 10px;
  font-family: var(--font-mono);
}

@media (max-width: 640px) {
  .dev-year {
    flex-direction: column;
    gap: 14px;
  }
  .dev-year::before {
    left: 24px;
    top: 54px;
  }
  .dev-year-badge {
    min-width: 0;
    align-self: flex-start;
    padding: 8px 16px;
    font-size: 17px;
  }
  .dev-milestones {
    padding-left: 4px;
  }
}

.timeline-wrap {
  margin-bottom: 40px;
}

.timeline-track {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  position: relative;
}

.timeline-progress {
  position: absolute;
  top: 20px;
  left: 8%;
  right: 8%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  opacity: 0.3;
}

.timeline-step {
  position: relative;
  text-align: center;
  z-index: 2;
}

.timeline-circle {
  width: 40px;
  height: 40px;
  margin: 0 auto 16px;
  background: var(--gradient-cyan);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  box-shadow: 0 0 0 6px rgba(0, 132, 200, 0.15), 0 0 0 12px rgba(0, 132, 200, 0.05);
  transition: var(--transition);
}

.timeline-step:hover .timeline-circle {
  transform: scale(1.15);
  box-shadow: 0 0 0 8px rgba(0, 132, 200, 0.25);
}

.timeline-content {
  padding: 0 8px;
}

.timeline-content h5 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.timeline-content p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* === LLM Outputs 核心能力 === */
.llm-outputs h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.outputs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.output-card {
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 24px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.output-card:hover {
  background: rgba(255, 255, 255, 0.8);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.output-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-cyan);
  margin-bottom: 8px;
  font-weight: 600;
}

.output-card h5 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.output-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === App Num Badge 美化 === */
.app-num {
  display: inline-flex;
  align-items: center;
  margin-bottom: 12px;
}

.app-num-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 32px;
  height: 24px;
  padding: 0 10px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
  color: #fff;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  border-radius: 12px;
  letter-spacing: 0.05em;
}

/* === Products Page Responsive === */
@media (max-width: 1024px) {
  .featured-product-grid { grid-template-columns: 1fr; }
  .product-grid-beautified { grid-template-columns: repeat(2, 1fr); }
  .timeline-track { grid-template-columns: repeat(3, 1fr); row-gap: 32px; }
  .timeline-progress { display: none; }
}

@media (max-width: 768px) {
  .page-header-banner { min-height: 320px; padding: 60px 0; }
  .page-header-banner h1 { font-size: 36px; }
  .product-quick-stats { grid-template-columns: repeat(2, 1fr); }
  .featured-metrics { grid-template-columns: repeat(2, 1fr); }
  .featured-product-main, .featured-product-specs { padding: 28px; }
  .featured-product-image { height: 240px; }
  .featured-key-points { grid-template-columns: 1fr; }
  .product-grid-beautified { grid-template-columns: 1fr; }
  .outputs-grid { grid-template-columns: 1fr; }
  .timeline-track { grid-template-columns: 1fr; row-gap: 28px; }
  .llm-featured { padding: 28px; }
  .llm-header h3 { font-size: 24px; }
  .product-filter { justify-content: flex-start; overflow-x: auto; padding-bottom: 8px; flex-wrap: nowrap; }
  .filter-btn { flex-shrink: 0; }
}

/* === Responsive for new sections === */
@media (max-width: 768px) {
  .tech-showcase-grid { grid-template-columns: 1fr; }
  .cert-grid { grid-template-columns: repeat(2, 1fr); }
  .partner-grid { grid-template-columns: repeat(3, 1fr); }
  .app-systems-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .cert-grid { grid-template-columns: 1fr; }
  .partner-grid { grid-template-columns: repeat(2, 1fr); }
}

/* === Reduced Motion — Non-negotiable === */
@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;
  }

  .reveal, .reveal-left, .reveal-right, .reveal-scale, .stagger > * {
    opacity: 1 !important;
    transform: none !important;
  }

  .scroll-progress { display: none; }
  .cursor-trail, .cursor-dot { display: none; }
  #globalParticles { display: none; }
  .typewriter { border-right: none; }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Breadcrumb === */
.breadcrumb-bar {
  margin-top: 70px;
  padding: 16px 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-glow);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

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

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

.breadcrumb-sep {
  color: var(--text-muted);
  font-size: 12px;
}

.breadcrumb-current {
  color: var(--text-primary);
  font-weight: 500;
}

/* === Product Hero === */
.product-hero {
  padding: 60px 0;
  background: var(--bg-primary);
}

.product-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

.product-hero-visual {
  position: sticky;
  top: 100px;
}

.product-hero-image {
  position: relative;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.04), rgba(109, 40, 217, 0.04));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-xl);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 480px;
  overflow: hidden;
  margin-bottom: 20px;
}

.product-hero-image img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transition: transform 0.6s ease;
}

.product-hero-image:hover img {
  transform: scale(1.05);
}

.hero-product-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  padding: 8px 14px;
  font-size: 13px;
  font-weight: 600;
  border-radius: 16px;
  color: #fff;
  background: linear-gradient(135deg, #ff6b35, #f7931e);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.thumb {
  background: var(--bg-card);
  border: 2px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 12px;
  cursor: pointer;
  transition: var(--transition);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.thumb img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.thumb:hover {
  border-color: var(--border-hover);
}

.thumb.active {
  border-color: var(--accent-cyan);
  background: rgba(0, 132, 200, 0.05);
}

.product-hero-info {
  position: relative;
}

.product-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

.badge-tag {
  padding: 4px 12px;
  background: rgba(0, 132, 200, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
}

.badge-tag.hot {
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.15), rgba(247, 147, 30, 0.15));
  border-color: rgba(255, 107, 53, 0.4);
  color: #d97706;
}

.badge-tag.new {
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.15), rgba(0, 88, 204, 0.15));
  border-color: rgba(0, 132, 200, 0.4);
  color: var(--accent-cyan);
}

.product-hero-info h1 {
  font-size: 38px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.model-highlight {
  background: var(--gradient-tech);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-family: var(--font-mono);
}

.product-hero-tagline {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.6;
}

.product-hero-rating {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.rating-stars {
  color: #f59e0b;
  font-size: 18px;
  letter-spacing: 2px;
}

.rating-text {
  font-size: 13px;
  color: var(--text-secondary);
}

.product-hero-price {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 32px;
  padding: 20px 24px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.08), rgba(247, 147, 30, 0.08));
  border: 1px solid rgba(255, 107, 53, 0.2);
  border-radius: var(--radius-md);
}

.price-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-right: 8px;
}

.price-currency {
  font-size: 22px;
  color: #d97706;
  font-weight: 600;
}

.price-value {
  font-size: 42px;
  font-weight: 800;
  color: #d97706;
  font-family: var(--font-mono);
}

.price-unit {
  font-size: 14px;
  color: var(--text-secondary);
  margin-right: auto;
}

.price-batch {
  padding: 4px 10px;
  background: rgba(217, 119, 6, 0.15);
  color: #d97706;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}

.product-hero-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-feature {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.hero-feature:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
}

.feature-icon-big {
  font-size: 28px;
  flex-shrink: 0;
}

.feature-title {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 2px;
}

.feature-desc {
  font-size: 12px;
  color: var(--text-secondary);
}

.product-hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.btn-large {
  padding: 14px 32px;
  font-size: 16px;
}

.btn-icon-large {
  padding: 14px 18px;
  font-size: 18px;
  min-width: 52px;
}

.product-hero-promise {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  padding-top: 20px;
  border-top: 1px solid var(--border-glow);
}

.product-hero-promise span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* === Detail Tabs === */
.detail-tabs-section {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-glow);
  position: sticky;
  top: 70px;
  z-index: 50;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.detail-tabs {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  scrollbar-width: none;
}

.detail-tabs::-webkit-scrollbar {
  display: none;
}

.detail-tab {
  padding: 16px 20px;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: var(--transition);
}

.detail-tab:hover {
  color: var(--text-primary);
}

.detail-tab.active {
  color: var(--accent-cyan);
  border-bottom-color: var(--accent-cyan);
}

/* 手机端：标签均分一排显示，无需左右滑动 */
@media (max-width: 640px) {
  .detail-tabs {
    gap: 0;
  }
  .detail-tab {
    flex: 1 1 0;
    min-width: 0;
    text-align: center;
    padding: 14px 2px;
    font-size: 12px;
  }
}

/* === Detail Sections === */
.detail-section {
  scroll-margin-top: 130px;
  padding: 60px 0;
}
@media (max-width: 768px) {
  .detail-section { padding: 40px 0; }
}

/* === Overview === */
.overview-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: center;
}

.overview-content p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.overview-highlights {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 32px;
}

.highlight-item {
  text-align: center;
  padding: 20px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
}

.highlight-num {
  display: block;
  font-size: 24px;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.highlight-label {
  font-size: 12px;
  color: var(--text-secondary);
}

.overview-image img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
}

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

.feature-card-large {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card-large::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 3px;
  background: var(--gradient-cyan);
  opacity: 0.6;
  transition: opacity 0.3s;
}

.feature-card-large:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

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

.feature-card-icon {
  font-size: 40px;
  margin-bottom: 16px;
}

.feature-card-large h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.feature-card-large > p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  font-size: 13px;
  color: var(--text-secondary);
  padding: 4px 0;
}

/* === Specs Table === */
.specs-table-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.specs-table {
  width: 100%;
  border-collapse: collapse;
}

.specs-table thead .spec-group {
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  padding: 16px 24px;
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
  text-align: left;
  border-top: 1px solid var(--border-glow);
}

.specs-table tbody tr {
  transition: var(--transition);
}

.specs-table tbody tr:hover {
  background: rgba(0, 132, 200, 0.03);
}

.spec-name {
  padding: 16px 24px;
  color: var(--text-secondary);
  font-size: 14px;
  width: 40%;
  border-bottom: 1px solid var(--border-glow);
}

.spec-value {
  padding: 16px 24px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid var(--border-glow);
}

/* === Scenarios === */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

/* 仅当恰好 2 个场景卡时改为两列占满，避免固定三列时留出一整块空白 */
.scenarios-grid:has(.scenario-card:first-child:nth-last-child(2)) {
  grid-template-columns: repeat(2, 1fr);
}

.scenario-card {
  position: relative;
  background: linear-gradient(180deg, rgba(0, 132, 200, 0.035), rgba(0, 132, 200, 0) 42%), var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px 24px 28px;
  text-align: center;
  overflow: hidden;
  transition: var(--transition);
}

/* 顶部渐变亮线：悬停时浮现 */
.scenario-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 24px;
  right: 24px;
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: linear-gradient(90deg, var(--accent-cyan), var(--accent-purple));
  opacity: 0;
  transition: var(--transition);
}

.scenario-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

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

.scenario-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.1), rgba(109, 40, 217, 0.08));
  border: 1px solid rgba(0, 132, 200, 0.12);
  transition: var(--transition);
}

.scenario-card:hover .scenario-icon {
  transform: scale(1.06);
  box-shadow: 0 6px 16px rgba(0, 132, 200, 0.18);
}

.scenario-card h4 {
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 8px;
}

.scenario-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Download === */
.download-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.download-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.download-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.download-icon {
  font-size: 32px;
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 132, 200, 0.08);
  border-radius: var(--radius-md);
}

.download-info {
  flex: 1;
}

.download-info h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 4px;
}

.download-info > p {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.download-meta {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* === Reviews === */
.review-summary {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  margin-bottom: 32px;
}

.review-score {
  text-align: center;
  padding-right: 32px;
  border-right: 1px solid var(--border-glow);
}

.big-score {
  font-size: 72px;
  font-weight: 800;
  color: var(--accent-orange);
  font-family: var(--font-mono);
  line-height: 1;
}

.score-stars {
  color: #f59e0b;
  font-size: 20px;
  margin: 8px 0;
}

.score-text {
  font-size: 13px;
  color: var(--text-secondary);
}

.review-bars {
  display: flex;
  flex-direction: column;
  gap: 16px;
  justify-content: center;
}

.bar-row {
  display: grid;
  grid-template-columns: 100px 1fr 60px;
  align-items: center;
  gap: 16px;
}

.bar-label {
  font-size: 13px;
  color: var(--text-secondary);
}

.bar-track {
  height: 8px;
  background: var(--border-glow);
  border-radius: 4px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-orange), #f59e0b);
  border-radius: 4px;
  transition: width 1s ease;
}

.bar-score {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent-orange);
  text-align: right;
  font-family: var(--font-mono);
}

.reviews-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.review-item {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: var(--transition);
}

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

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.reviewer-avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-cyan);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 16px;
  flex-shrink: 0;
}

.reviewer-info {
  flex: 1;
}

.reviewer-name {
  font-size: 14px;
  font-weight: 600;
}

.reviewer-meta {
  font-size: 12px;
  color: var(--text-secondary);
}

.review-stars {
  color: #f59e0b;
  font-size: 16px;
}

.review-text {
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.review-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.review-tag {
  padding: 3px 10px;
  background: rgba(0, 132, 200, 0.06);
  border-radius: 12px;
  font-size: 11px;
  color: var(--accent-cyan);
}

/* === FAQ === */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.faq-item[open] {
  border-color: var(--border-hover);
}

.faq-question {
  padding: 20px 24px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  list-style: none;
}

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

.faq-toggle {
  width: 28px;
  height: 28px;
  background: rgba(0, 132, 200, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  font-weight: 300;
  color: var(--accent-cyan);
  transition: transform 0.3s;
  flex-shrink: 0;
}

.faq-item[open] .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-secondary);
}

/* === Related Products === */
.related-products {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.related-product-card {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 20px;
  text-align: center;
  transition: var(--transition);
  color: var(--text-primary);
}

.related-product-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.related-img {
  height: 140px;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.04), rgba(109, 40, 217, 0.04));
  border-radius: var(--radius-md);
  overflow: hidden;
}

.related-img img {
  max-width: 80%;
  max-height: 80%;
  object-fit: contain;
}

.related-product-card h4 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 4px;
}

.related-product-card > p {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.related-price {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent-orange);
  font-family: var(--font-mono);
}

/* === Footer Links === */
.footer-links {
  display: flex;
  gap: 20px;
  font-size: 13px;
}

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

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

/* === Product Detail Responsive === */
@media (max-width: 1024px) {
  .product-hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .product-hero-visual { position: static; }
  .overview-grid { grid-template-columns: 1fr; }
  .features-grid, .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .download-grid { grid-template-columns: 1fr; }
  .review-summary { grid-template-columns: 1fr; }
  .review-score { border-right: none; border-bottom: 1px solid var(--border-glow); padding-right: 0; padding-bottom: 24px; }
  .related-products { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .product-hero-info h1 { font-size: 28px; }
  .product-hero-features { grid-template-columns: 1fr; }
  .features-grid, .scenarios-grid { grid-template-columns: 1fr; }
  .overview-highlights { grid-template-columns: repeat(2, 1fr); }
  .price-value { font-size: 32px; }
  .product-hero-image { padding: 28px; min-height: 320px; }
}

/* === Solution Hero === */
.solution-hero {
  position: relative;
  min-height: 480px;
  display: flex;
  align-items: center;
  margin-top: 0;
  padding: 80px 0;
  overflow: hidden;
  margin-top: 70px;
}

.solution-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.solution-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.6);
}

.solution-hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(10, 20, 35, 0.85) 0%, rgba(0, 132, 200, 0.4) 100%);
}

.solution-hero-content {
  position: relative;
  z-index: 2;
  color: #fff;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.solution-hero-icon {
  font-size: 64px;
  margin-bottom: 20px;
  filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.3));
}

.solution-hero-content h1 {
  font-size: 48px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 16px;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.solution-hero-tagline {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.7;
  margin-bottom: 32px;
}

.solution-hero-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  margin-bottom: 32px;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.85);
}

.solution-hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* === Architecture Layers === */
.architecture-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
}

.architecture-layer {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.architecture-layer:hover {
  border-color: var(--accent-cyan);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.layer-num {
  position: absolute;
  top: 12px;
  right: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 700;
}

.layer-icon {
  font-size: 36px;
  margin-bottom: 12px;
}

.architecture-layer h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.architecture-layer p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 16px;
}

.layer-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  justify-content: center;
}

.tech-chip {
  padding: 3px 10px;
  background: rgba(0, 132, 200, 0.08);
  border-radius: 10px;
  font-size: 11px;
  color: var(--accent-cyan);
}

/* === Case Items === */
.cases-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.case-item {
  display: flex;
  gap: 24px;
  padding: 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.case-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
}

.case-icon {
  font-size: 48px;
  flex-shrink: 0;
  width: 80px;
  height: 80px;
  background: rgba(0, 132, 200, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-info {
  flex: 1;
}

.case-info h4 {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 4px;
}

.case-tagline {
  font-size: 14px;
  color: var(--accent-cyan);
  margin-bottom: 12px;
  font-weight: 500;
}

.case-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.case-results {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.case-result {
  padding: 12px 20px;
  background: linear-gradient(135deg, rgba(5, 150, 105, 0.06), rgba(0, 132, 200, 0.06));
  border-radius: var(--radius-md);
  text-align: center;
}

.case-result strong {
  display: block;
  font-size: 22px;
  color: var(--accent-green);
  font-family: var(--font-mono);
  font-weight: 800;
}

.case-result span {
  font-size: 12px;
  color: var(--text-secondary);
}

/* === Article Layout === */
.article-page {
  padding: 40px 0;
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 48px;
}

.article-main {
  min-width: 0;
}

.article-header {
  margin-bottom: 32px;
}

.article-meta-top {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  align-items: center;
}

.article-tag-badge {
  padding: 4px 12px;
  background: rgba(0, 132, 200, 0.1);
  color: var(--accent-cyan);
  border-radius: 12px;
  font-weight: 600;
  font-size: 12px;
}

.article-header h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
}

.article-summary {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 24px;
}

.article-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
}

.author-avatar {
  width: 44px;
  height: 44px;
  background: var(--gradient-cyan);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
}

.author-info {
  flex: 1;
}

.author-name {
  font-size: 14px;
  font-weight: 600;
}

.author-role {
  font-size: 12px;
  color: var(--text-secondary);
}

.article-share {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-secondary);
}

.share-icon {
  width: 28px;
  height: 28px;
  background: rgba(0, 132, 200, 0.08);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--accent-cyan);
  transition: var(--transition);
}

.share-icon:hover {
  background: var(--accent-cyan);
  color: #fff;
}

/* === Article Cover === */
.article-cover {
  margin-bottom: 32px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-glow);
}

.article-cover img {
  width: 100%;
  height: auto;
  display: block;
}

/* === Article Body === */
.article-body {
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-primary);
}

.article-lead {
  font-size: 18px;
  line-height: 1.8;
  color: var(--text-primary);
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  border-left: 4px solid var(--accent-cyan);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 32px;
}

.article-body h2 {
  font-size: 26px;
  font-weight: 700;
  margin: 40px 0 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-glow);
}

.article-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--accent-cyan);
}

.article-body p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.article-body ul {
  margin: 16px 0 24px 20px;
}

.article-body li {
  margin-bottom: 8px;
  color: var(--text-secondary);
}

.article-body strong {
  color: var(--text-primary);
}

.article-quote {
  margin: 32px 0;
  padding: 24px 32px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  border-left: 4px solid var(--accent-purple);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  font-size: 17px;
  color: var(--text-primary);
  line-height: 1.8;
}

.article-grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 24px 0;
}

.article-grid-item {
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  font-size: 14px;
}

.article-grid-item strong {
  display: block;
  font-size: 16px;
  margin-bottom: 8px;
  color: var(--accent-cyan);
}

.article-grid-item p {
  margin-bottom: 0;
  font-size: 13px;
}

/* === Article Tags === */
.article-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 24px 0;
  border-top: 1px solid var(--border-glow);
  border-bottom: 1px solid var(--border-glow);
  margin: 32px 0;
}

.article-tags-label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.article-tag {
  padding: 4px 12px;
  background: rgba(0, 132, 200, 0.06);
  border: 1px solid var(--border-glow);
  border-radius: 12px;
  font-size: 12px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.article-tag:hover {
  background: rgba(0, 132, 200, 0.15);
  color: var(--accent-cyan);
}

/* === Article Nav === */
.article-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 40px;
}

.article-nav-item {
  display: block;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.article-nav-item:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.article-nav-next {
  text-align: right;
}

.nav-direction {
  display: block;
  font-size: 12px;
  color: var(--accent-cyan);
  margin-bottom: 6px;
}

.nav-title {
  font-size: 14px;
  color: var(--text-primary);
  font-weight: 500;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* === Article Comments === */
.article-comments {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.article-comments h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 20px;
}

.comment-form {
  margin-bottom: 24px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-glow);
}

.comment-form textarea {
  width: 100%;
  padding: 14px;
  background: rgba(240, 244, 250, 0.5);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-primary);
  resize: vertical;
  outline: none;
  transition: var(--transition);
  margin-bottom: 12px;
}

.comment-form textarea:focus {
  border-color: var(--accent-cyan);
}

.comment-form-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.comment-tip {
  font-size: 12px;
  color: var(--text-muted);
}

.comments-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.comment-item {
  display: flex;
  gap: 12px;
}

.comment-avatar {
  width: 40px;
  height: 40px;
  background: var(--gradient-cyan);
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.comment-content {
  flex: 1;
}

.comment-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.comment-name {
  font-size: 14px;
  font-weight: 600;
}

.comment-time {
  font-size: 12px;
  color: var(--text-muted);
}

.comment-text {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Article Sidebar === */
.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.sidebar-block {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 24px;
}

/* 仅文章目录固定跟随滚动；相关推荐/热门标签不固定，否则滚动时会遮挡目录 */
.sidebar-block.sidebar-toc-block {
  position: sticky;
  top: 130px;
}

.sidebar-block h4 {
  font-size: 15px;
  font-weight: 700;
  margin-bottom: 16px;
}

.sidebar-related {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sidebar-related-item {
  display: flex;
  gap: 12px;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}

.sidebar-related-item:hover {
  background: rgba(0, 132, 200, 0.05);
}

.sidebar-related-item img {
  width: 64px;
  height: 64px;
  object-fit: cover;
  border-radius: var(--radius-sm);
  flex-shrink: 0;
}

.sidebar-related-item h5 {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 6px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.related-date {
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.sidebar-toc {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sidebar-toc li {
  border-left: 2px solid transparent;
  padding-left: 12px;
  transition: var(--transition);
}

.sidebar-toc li:hover {
  border-left-color: var(--accent-cyan);
}

.sidebar-toc a {
  font-size: 13px;
  color: var(--text-secondary);
}

.sidebar-toc a:hover {
  color: var(--accent-cyan);
}

/* 目录跳转后标题不被顶部导航遮挡 */
.article-body h2[id] {
  scroll-margin-top: 90px;
}

/* 轻量提示条（分享复制等操作反馈） */
.site-toast {
  position: fixed;
  left: 50%;
  bottom: 80px;
  transform: translateX(-50%) translateY(20px);
  padding: 10px 20px;
  background: rgba(20, 28, 40, 0.92);
  color: #fff;
  font-size: 13px;
  border-radius: 24px;
  border: 1px solid var(--border-glow);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  z-index: 9999;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.site-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sidebar-tag {
  padding: 4px 10px;
  background: rgba(0, 132, 200, 0.06);
  border-radius: 12px;
  font-size: 11px;
  color: var(--text-secondary);
  transition: var(--transition);
}

.sidebar-tag:hover {
  background: rgba(0, 132, 200, 0.15);
  color: var(--accent-cyan);
}

/* === Article & Solution Responsive === */
@media (max-width: 1024px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { order: -1; }
  .sidebar-block { position: static; }
  /* 单列布局下目录也取消固定，避免遮挡正文 */
  .sidebar-block.sidebar-toc-block { position: static; }
  .architecture-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .article-header h1 { font-size: 26px; }
  .article-grid-2 { grid-template-columns: 1fr; }
  .article-nav { grid-template-columns: 1fr; }
  .article-nav-next { text-align: left; }
  .case-item { flex-direction: column; }
  .architecture-grid { grid-template-columns: 1fr; }
  .solution-hero-content h1 { font-size: 32px; }
  .solution-hero-tagline { font-size: 16px; }
  .solution-hero-meta { font-size: 13px; }
  .breadcrumb { font-size: 13px; }
}

/* === Legal Page Hero === */
.legal-hero {
  padding: 80px 0;
  margin-top: 70px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  border-bottom: 1px solid var(--border-glow);
}

.legal-hero-content {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.legal-icon {
  font-size: 56px;
  margin-bottom: 16px;
  display: inline-block;
  padding: 16px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 24px;
  border: 1px solid var(--border-glow);
}

.legal-hero h1 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #1a2332, #0058cc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.legal-hero p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}

.legal-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-secondary);
}

/* === Legal Layout === */
.legal-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
}

.legal-main {
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-lg);
  padding: 48px;
}

.legal-toc {
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.04), rgba(109, 40, 217, 0.04));
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 32px;
}

.legal-toc h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--accent-cyan);
}

.legal-toc ol {
  margin-left: 20px;
  counter-reset: list;
}

.legal-toc li {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  list-style: decimal;
}

.legal-toc a {
  color: var(--text-secondary);
  transition: var(--transition);
}

.legal-toc a:hover {
  color: var(--accent-cyan);
}

.legal-article {
  scroll-margin-top: 130px;
  margin-bottom: 32px;
}

.legal-article h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-glow);
  color: var(--text-primary);
}

.legal-article h3 {
  font-size: 17px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--accent-cyan);
}

.legal-article p {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.legal-article ul {
  margin: 12px 0 16px 20px;
}

.legal-article li {
  font-size: 14px;
  line-height: 1.9;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.legal-article strong {
  color: var(--text-primary);
}

.legal-article a {
  color: var(--accent-cyan);
}

.legal-contact-box {
  margin-top: 32px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.06), rgba(109, 40, 217, 0.06));
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-cyan);
}

.legal-contact-box h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--accent-cyan);
}

.legal-contact-box ul {
  margin-left: 20px;
  margin-bottom: 0;
}

.legal-acknowledgment {
  margin-top: 32px;
  padding: 16px 24px;
  background: rgba(5, 150, 105, 0.08);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent-green);
  font-size: 14px;
  color: var(--accent-green);
}

.legal-sidebar {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* === Sitemap Hero === */
.sitemap-hero {
  padding: 80px 0;
  margin-top: 70px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  border-bottom: 1px solid var(--border-glow);
}

.sitemap-hero-content {
  text-align: center;
}

.sitemap-icon {
  font-size: 56px;
  margin-bottom: 16px;
  display: inline-block;
  padding: 16px;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 24px;
  border: 1px solid var(--border-glow);
}

.sitemap-hero h1 {
  font-size: 44px;
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, #1a2332, #0058cc);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.sitemap-hero p {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.sitemap-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  max-width: 720px;
  margin: 0 auto;
}

.sitemap-stat {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  padding: 20px;
  backdrop-filter: blur(8px);
}

.sitemap-stat-num {
  font-size: 28px;
  font-weight: 800;
  color: var(--accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: 4px;
}

.sitemap-stat-label {
  font-size: 13px;
  color: var(--text-secondary);
}

/* === Sitemap Groups === */
.sitemap-section {
  padding: 60px 0;
}

.sitemap-group {
  margin-bottom: 48px;
}

.sitemap-group-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border-glow);
}

.sitemap-group-icon {
  font-size: 28px;
  width: 48px;
  height: 48px;
  background: rgba(0, 132, 200, 0.08);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.sitemap-group-header h2 {
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  flex: 1;
}

.sitemap-group-count {
  padding: 4px 12px;
  background: rgba(0, 132, 200, 0.1);
  color: var(--accent-cyan);
  border-radius: 12px;
  font-size: 13px;
  font-weight: 600;
}

.sitemap-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  align-items: stretch;
}

.sitemap-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  min-height: 96px;
  background: var(--bg-card);
  border: 1px solid var(--border-glow);
  border-radius: var(--radius-md);
  transition: var(--transition);
  color: var(--text-primary);
}

.sitemap-item:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-card);
  transform: translateY(-2px);
}

.sitemap-item.active {
  border-color: var(--accent-cyan);
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.06), rgba(109, 40, 217, 0.06));
}

.sitemap-item-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  background: rgba(0, 132, 200, 0.08);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}

.sitemap-item-content {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.sitemap-item-content h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex-wrap: wrap;
}

.sitemap-item-content h4 {
  overflow: hidden;
}

.sitemap-item-content h4 > :first-child {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 100%;
  display: inline-block;
  vertical-align: middle;
}

.you-are-here {
  font-size: 11px;
  padding: 2px 8px;
  background: rgba(5, 150, 105, 0.15);
  color: var(--accent-green);
  border-radius: 8px;
  font-weight: 500;
}

.sitemap-item-content p {
  font-size: 12px;
  color: var(--text-secondary);
  line-height: 1.5;
}

.sitemap-item-arrow {
  color: var(--accent-cyan);
  font-size: 18px;
  font-weight: 700;
  flex-shrink: 0;
  min-width: 20px;
  text-align: center;
}

/* === Sitemap Help === */
.sitemap-help {
  margin-top: 48px;
  padding: 32px;
  background: linear-gradient(135deg, rgba(0, 132, 200, 0.05), rgba(109, 40, 217, 0.05));
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-glow);
}

.sitemap-help h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 12px;
}

.sitemap-help p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

.sitemap-help ul {
  margin-left: 20px;
}

.sitemap-help li {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.sitemap-help a {
  color: var(--accent-cyan);
  font-weight: 500;
}

/* === Legal & Sitemap Responsive === */
@media (max-width: 1024px) {
  .legal-layout { grid-template-columns: 1fr; }
  .sitemap-list { grid-template-columns: 1fr; }
  .sitemap-stats { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .legal-hero h1, .sitemap-hero h1 { font-size: 32px; }
  .legal-main { padding: 28px; }
  .legal-meta { flex-direction: column; gap: 8px; }
  .sitemap-stats { grid-template-columns: 1fr 1fr; }
}

/* === 全局搜索（导航栏） === */
.nav-search {
  position: relative;
  display: flex;
  align-items: center;
  margin-left: 12px;
}

.gs-btn {
  width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border-glow);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.7);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
}

.gs-btn:hover, .gs-btn.active {
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 4px rgba(0, 132, 200, 0.1);
}

.gs-panel {
  display: none;
  position: absolute;
  top: calc(100% + 14px);
  right: 0;
  width: min(420px, calc(100vw - 32px));
  background: #fff;
  border-radius: 16px;
  border: 1px solid var(--border-glow);
  box-shadow: 0 24px 64px rgba(20, 40, 80, 0.16);
  padding: 16px;
  z-index: 1100;
}

.gs-panel.open { display: block; animation: gsIn 0.18s ease-out; }

@keyframes gsIn {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.gs-input-wrap {
  display: flex; align-items: center; gap: 8px;
  padding: 0 12px;
  border: 1px solid var(--border-glow);
  border-radius: 10px;
  background: var(--bg-secondary);
  color: var(--text-muted);
}

.gs-input-wrap:focus-within {
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 132, 200, 0.12);
}

.gs-input {
  flex: 1;
  border: none; outline: none; background: transparent;
  padding: 11px 0;
  font-size: 14px;
  color: var(--text-primary);
  font-family: inherit;
}

.gs-results { margin-top: 10px; max-height: 420px; overflow-y: auto; }

.gs-hint {
  padding: 22px 8px;
  text-align: center;
  font-size: 13px;
  color: var(--text-muted);
}

.gs-count {
  font-size: 12px;
  color: var(--text-muted);
  padding: 4px 6px 8px;
}

.gs-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 10px;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.15s ease;
}

.gs-item:hover { background: rgba(0, 132, 200, 0.07); }
.gs-item + .gs-item { margin-top: 2px; }

.gs-badge {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 999px;
  margin-top: 2px;
}

.gs-badge.is-product { background: rgba(0, 132, 200, 0.12); color: #0069a8; }
.gs-badge.is-solution { background: rgba(109, 40, 217, 0.12); color: #6d28d9; }
.gs-badge.is-news { background: rgba(217, 119, 6, 0.14); color: #b45309; }
.gs-badge.is-about { background: rgba(5, 150, 105, 0.14); color: #047857; }

.gs-item-body { display: flex; flex-direction: column; gap: 3px; min-width: 0; }
.gs-item-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.gs-item-desc {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

/* 移动端：面板全宽 */
@media (max-width: 768px) {
  .nav-search { margin-left: auto; margin-right: 14px; }
  .gs-panel { position: fixed; top: 70px; left: 12px; right: 12px; width: auto; }
}

/* === 产品列表卡：缩略图条 === */
.card-thumbs {
  display: flex;
  gap: 6px;
  padding: 8px 12px 0;
  flex-wrap: wrap;
}
.card-thumb {
  width: 46px;
  height: 46px;
  border-radius: 8px;
  object-fit: cover;
  cursor: pointer;
  border: 2px solid transparent;
  transition: border-color 0.15s ease, transform 0.15s ease;
  background: var(--bg-secondary);
}
.card-thumb:hover { transform: translateY(-2px); }
.card-thumb.is-active { border-color: var(--accent-cyan); }

/* === 详情页：查看全部按钮（与缩略图区同行右侧） === */
.gallery-see-all {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 8px 0 0;
  padding: 8px 16px;
  font-size: 13px;
  border-radius: 999px;
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
  background: rgba(0, 132, 200, 0.06);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}
.gallery-see-all:hover { background: rgba(0, 132, 200, 0.14); transform: translateY(-1px); }

/* === 全屏画廊模态 === */
.gallery-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 40px 80px;
}
.gallery-modal.open { display: flex; animation: gmIn 0.2s ease-out; }
@keyframes gmIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.gallery-modal-figure {
  max-width: min(1100px, 90vw);
  max-height: 80vh;
  margin: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.gallery-modal-figure img {
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}
.gallery-modal-caption {
  margin-top: 18px;
  color: #cbd5e1;
  text-align: center;
  font-size: 14px;
  display: flex;
  gap: 16px;
  justify-content: center;
}
.gallery-modal-caption .gm-index {
  background: rgba(255,255,255,0.15);
  padding: 4px 12px;
  border-radius: 999px;
  font-variant-numeric: tabular-nums;
}
.gallery-modal-close,
.gallery-modal-prev,
.gallery-modal-next {
  position: absolute;
  background: rgba(255,255,255,0.15);
  color: #fff;
  border: none;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  font-size: 28px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease, transform 0.15s ease;
}
.gallery-modal-close:hover,
.gallery-modal-prev:hover,
.gallery-modal-next:hover { background: rgba(255,255,255,0.3); }
.gallery-modal-close { top: 24px; right: 24px; font-size: 24px; }
.gallery-modal-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.gallery-modal-next { right: 24px; top: 50%; transform: translateY(-50%); }
.gallery-modal-prev:hover { transform: translateY(-50%) scale(1.05); }
.gallery-modal-next:hover { transform: translateY(-50%) scale(1.05); }

/* === 应用系统卡片：作为 <a> 标签的样式适配 === */
a.app-system-card {
  display: block;
  position: relative;
  text-decoration: none;
  color: inherit;
  cursor: pointer;
}
a.app-system-card:hover {
  border-color: var(--accent-cyan);
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 132, 200, 0.12);
}
.app-see-more {
  display: inline-block;
  margin-top: 12px;
  font-size: 13px;
  color: var(--accent-cyan);
  font-weight: 500;
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
a.app-system-card:hover .app-see-more {
  opacity: 1;
  transform: translateX(0);
}

/* === 合作伙伴 logo 图片 === */
.partner-item img {
  max-width: 100%;
  max-height: 56px;
  width: auto;
  height: auto;
  object-fit: contain;
  transition: transform 0.3s ease;
}
.partner-item:hover img {
  transform: scale(1.04);
}

/* === 回到顶部按钮 === */
.qm-back-to-top {
  position: fixed;
  right: 28px;
  bottom: 28px;
  width: 64px;
  height: 64px;
  border: none;
  background: transparent;
  cursor: pointer;
  z-index: 90;
  padding: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.85);
  transition: opacity 0.3s ease, transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), visibility 0.3s;
}
.qm-back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}
.qm-back-to-top:hover { transform: translateY(-4px) scale(1.05); }
.qm-back-to-top:active { transform: translateY(0) scale(0.95); }

.qm-btt-ring {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: rotate(-90deg);
  filter: drop-shadow(0 0 6px rgba(0, 132, 200, 0.35));
}
.qm-btt-track,
.qm-btt-progress {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
}
.qm-btt-track {
  stroke: rgba(0, 132, 200, 0.12);
}
.qm-btt-progress {
  stroke: url(#qm-btt-grad);
  transition: stroke-dashoffset 0.12s ease-out;
}

.qm-back-to-top {
  /* 引入渐变（写在按钮里） */
}
.qm-back-to-top::before {
  content: "";
  position: absolute;
  inset: 6px;
  border-radius: 50%;
  background:
    radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.95), rgba(255, 255, 255, 0.85) 40%, rgba(220, 235, 250, 0.7) 100%);
  box-shadow:
    inset 0 0 12px rgba(0, 132, 200, 0.18),
    0 6px 22px rgba(0, 132, 200, 0.22),
    0 0 0 1px rgba(0, 132, 200, 0.18);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 0;
}
.qm-back-to-top::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, rgba(0, 132, 200, 0) 0%, rgba(0, 132, 200, 0.5) 50%, rgba(109, 40, 217, 0.4) 100%);
  filter: blur(8px);
  opacity: 0.55;
  z-index: -1;
  animation: qmBttGlow 4s linear infinite;
}
@keyframes qmBttGlow {
  to { transform: rotate(360deg); }
}
.qm-back-to-top:hover::after { opacity: 0.9; }

.qm-btt-core {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-cyan);
  z-index: 1;
}
.qm-back-to-top:hover .qm-btt-core {
  color: var(--accent-purple, #6d28d9);
  animation: qmBttArrow 0.6s ease-out;
}
@keyframes qmBttArrow {
  0%   { transform: translateY(2px); }
  60%  { transform: translateY(-4px); }
  100% { transform: translateY(0); }
}

.qm-btt-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 2;
}
.qm-btt-particles i {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-cyan);
  opacity: 0;
  pointer-events: none;
}
.qm-back-to-top:hover .qm-btt-particles i {
  animation: qmBttBurst 0.8s ease-out forwards;
}
.qm-btt-particles i:nth-child(1) { transform: translate(-50%, -50%) translate(-22px, -14px); }
.qm-btt-particles i:nth-child(2) { transform: translate(-50%, -50%) translate(22px, -14px); animation-delay: 0.06s !important; }
.qm-btt-particles i:nth-child(3) { transform: translate(-50%, -50%) translate(-22px, 14px); animation-delay: 0.12s !important; }
.qm-btt-particles i:nth-child(4) { transform: translate(-50%, -50%) translate(22px, 14px); animation-delay: 0.18s !important; }
@keyframes qmBttBurst {
  0%   { opacity: 0; transform: translate(-50%, -50%) scale(0.4); }
  40%  { opacity: 1; }
  100% { opacity: 0; transform: var(--qm-end) scale(1.1); }
}
.qm-btt-particles i:nth-child(1) { --qm-end: translate(-44px, -28px); }
.qm-btt-particles i:nth-child(2) { --qm-end: translate(44px, -28px); }
.qm-btt-particles i:nth-child(3) { --qm-end: translate(-44px, 28px); }
.qm-btt-particles i:nth-child(4) { --qm-end: translate(44px, 28px); }

@media (max-width: 768px) {
  .qm-back-to-top { width: 56px; height: 56px; right: 16px; bottom: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .qm-back-to-top::after { animation: none; }
  .qm-back-to-top:hover .qm-btt-core { animation: none; }
  .qm-back-to-top:hover .qm-btt-particles i { animation: none; opacity: 0; }
}