/* ===================================
   摩托云 - 科技感主样式 v2.0
   支持白天/黑夜双主题
   =================================== */

/* ===== 黑夜模式（默认）===== */
:root,
[data-theme="dark"] {
  --primary: #00d4ff;
  --secondary: #7b2ff7;
  --accent: #ff6b35;
  --accent2: #00ff88;
  --bg-dark: #03080f;
  --bg-body: #03080f;
  --bg-nav: rgba(3, 8, 15, 0.88);
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.07);
  --bg-input: rgba(0, 0, 0, 0.4);
  --border: rgba(0, 212, 255, 0.12);
  --border-hover: rgba(0, 212, 255, 0.45);
  --text-primary: #eef4ff;
  --text-secondary: #7a94b0;
  --text-muted: #3d556a;
  --grad-main: linear-gradient(135deg, #00d4ff 0%, #7b2ff7 100%);
  --grad-main-r: linear-gradient(135deg, #7b2ff7 0%, #00d4ff 100%);
  --grad-card: linear-gradient(135deg, rgba(0,212,255,0.07), rgba(123,47,247,0.07));
  --grad-hero: radial-gradient(ellipse 120% 80% at 60% 40%, rgba(0,212,255,0.07) 0%, transparent 60%),
               radial-gradient(ellipse 80% 60% at 10% 80%, rgba(123,47,247,0.08) 0%, transparent 55%);
  --nav-height: 76px;
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.18);
  --shadow-card: 0 20px 60px rgba(0, 0, 0, 0.5);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --footer-bg: rgba(0,0,0,0.4);
  --logo-filter: brightness(0) invert(1);
  --logo-filter-footer: brightness(0) invert(1) opacity(0.8);
  --grid-color: rgba(0,212,255,0.035);
}

/* ===== 白天模式 ===== */
[data-theme="light"] {
  --primary: #0066cc;
  --secondary: #5b1fd4;
  --accent: #e85d2f;
  --accent2: #00a86b;
  --bg-dark: #f0f4f8;
  --bg-body: #f5f8fc;
  --bg-nav: rgba(255, 255, 255, 0.92);
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(255, 255, 255, 0.98);
  --bg-input: rgba(255, 255, 255, 0.9);
  --border: rgba(0, 102, 204, 0.15);
  --border-hover: rgba(0, 102, 204, 0.45);
  --text-primary: #0d1b2a;
  --text-secondary: #3d5a7a;
  --text-muted: #7a95ae;
  --grad-main: linear-gradient(135deg, #0066cc 0%, #5b1fd4 100%);
  --grad-main-r: linear-gradient(135deg, #5b1fd4 0%, #0066cc 100%);
  --grad-card: linear-gradient(135deg, rgba(0,102,204,0.06), rgba(91,31,212,0.06));
  --grad-hero: radial-gradient(ellipse 120% 80% at 60% 40%, rgba(0,102,204,0.06) 0%, transparent 60%),
               radial-gradient(ellipse 80% 60% at 10% 80%, rgba(91,31,212,0.06) 0%, transparent 55%);
  --nav-height: 76px;
  --shadow-glow: 0 0 40px rgba(0, 102, 204, 0.15);
  --shadow-card: 0 8px 40px rgba(0, 40, 100, 0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --footer-bg: rgba(13, 27, 42, 0.95);
  --logo-filter: none;
  --logo-filter-footer: brightness(0) invert(1) opacity(0.9);
  --grid-color: rgba(0,102,204,0.04);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg-body);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Noto Sans SC', 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  transition: background 0.4s ease, color 0.4s ease;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; }

/* ===== 网格背景 ===== */
#particles-bg {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 80px 80px;
}

#particles-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
}

#particles-canvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
  opacity: 0.5;
}

main, nav, footer, section { position: relative; z-index: 1; }

/* ===== 导航栏 ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: var(--bg-nav);
  backdrop-filter: blur(24px) saturate(180%);
  -webkit-backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 4px 40px rgba(0,0,0,0.2);
  border-bottom-color: var(--border-hover);
}

[data-theme="light"] .navbar.scrolled {
  box-shadow: 0 4px 40px rgba(0,40,100,0.12);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 32px;
}

/* Logo图片 */
.nav-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.logo-img {
  height: 44px;
  width: auto;
  object-fit: contain;
  filter: var(--logo-filter);
  transition: filter 0.4s ease, opacity 0.3s;
}

.logo-img:hover { opacity: 0.85; }

[data-theme="light"] .logo-img {
  filter: none;
}

.footer-logo-img {
  height: 38px;
  width: auto;
  object-fit: contain;
  filter: var(--logo-filter-footer);
  margin-bottom: 16px;
  display: block;
}

/* 导航链接 */
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 2px;
  margin-left: auto;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 18px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
  white-space: nowrap;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary);
  background: rgba(0,212,255,0.08);
}

[data-theme="light"] .nav-link:hover,
[data-theme="light"] .nav-link.active {
  background: rgba(0,102,204,0.08);
}

/* 下拉菜单 */
.nav-dropdown { position: relative; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 12px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  min-width: 240px;
  background: var(--bg-nav);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 8px;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  backdrop-filter: blur(24px);
  box-shadow: 0 24px 64px rgba(0,0,0,0.35), 0 0 0 1px var(--border);
}

[data-theme="light"] .dropdown-menu {
  box-shadow: 0 16px 48px rgba(0,40,120,0.15);
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.dropdown-menu li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 8px;
  transition: var(--transition);
}

.dropdown-menu li a i { width: 16px; color: var(--primary); }
.dropdown-menu li a:hover { color: var(--primary); background: rgba(0,212,255,0.07); }
[data-theme="light"] .dropdown-menu li a:hover { background: rgba(0,102,204,0.07); }

/* 右侧工具栏 */
.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

/* ===== 主题切换按钮 ===== */
.theme-toggle {
  position: relative;
  width: 56px;
  height: 28px;
  background: none;
  border: 1.5px solid var(--border);
  border-radius: 14px;
  cursor: pointer;
  padding: 0;
  transition: var(--transition);
  overflow: visible;
  flex-shrink: 0;
}

.theme-toggle:hover {
  border-color: var(--primary);
  box-shadow: 0 0 12px rgba(0,212,255,0.25);
}

.theme-track {
  position: absolute;
  top: 3px; left: 3px;
  width: 20px; height: 20px;
  background: var(--grad-main);
  border-radius: 50%;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

[data-theme="light"] .theme-track {
  transform: translateX(28px);
}

.theme-icon {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 11px;
  color: var(--text-muted);
  transition: opacity 0.3s;
  pointer-events: none;
}

.dark-icon { right: 6px; }
.light-icon { left: 6px; }

[data-theme="dark"] .light-icon { opacity: 0.3; }
[data-theme="dark"] .dark-icon { opacity: 1; color: var(--primary); }
[data-theme="light"] .dark-icon { opacity: 0.3; }
[data-theme="light"] .light-icon { opacity: 1; color: var(--accent); }

/* CTA按钮 */
.nav-cta {
  padding: 9px 22px;
  background: var(--grad-main);
  color: white !important;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  transition: var(--transition);
  flex-shrink: 0;
  letter-spacing: 0.3px;
}

.nav-cta:hover {
  opacity: 0.9;
  box-shadow: 0 0 24px rgba(0,212,255,0.4);
  transform: translateY(-1px);
}

/* 汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== 通用按钮 ===== */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px;
  background: var(--grad-main);
  color: white; border-radius: 10px;
  font-size: 15px; font-weight: 600;
  transition: var(--transition);
  border: none; cursor: pointer; white-space: nowrap;
  letter-spacing: 0.3px;
}
.btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 0 36px rgba(0,212,255,0.45);
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 32px;
  border: 1.5px solid var(--border-hover);
  color: var(--primary); border-radius: 10px;
  font-size: 15px; font-weight: 500;
  transition: var(--transition); white-space: nowrap;
}
.btn-outline:hover {
  background: rgba(0,212,255,0.08);
  border-color: var(--primary);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 32px;
  color: var(--text-secondary); border-radius: 10px;
  font-size: 15px; font-weight: 500;
  transition: var(--transition);
  border: 1.5px solid var(--border);
  white-space: nowrap;
}
.btn-ghost:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

.btn-lg { padding: 18px 48px; font-size: 16px; }
.btn-full { width: 100%; justify-content: center; }

/* ===== 通用样式 ===== */
.gradient-text {
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header { text-align: center; margin-bottom: 72px; }

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px; font-weight: 700;
  letter-spacing: 4px;
  color: var(--primary);
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
}
.section-tag::before {
  content: '';
  width: 5px; height: 5px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

[data-theme="light"] .section-tag {
  background: rgba(0,102,204,0.08);
  border-color: rgba(0,102,204,0.2);
}

.section-title {
  font-size: clamp(30px, 4vw, 48px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-height) + 60px) 80px 80px;
  max-width: 1400px;
  margin: 0 auto;
  gap: 72px;
  position: relative;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--primary);
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.2);
  padding: 7px 18px;
  border-radius: 24px;
  margin-bottom: 28px;
  letter-spacing: 0.5px;
}

[data-theme="light"] .hero-badge {
  background: rgba(0,102,204,0.07);
  border-color: rgba(0,102,204,0.2);
}

.badge-dot {
  width: 7px; height: 7px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
  box-shadow: 0 0 8px var(--primary);
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); box-shadow: 0 0 8px var(--primary); }
  50% { opacity: 0.7; transform: scale(1.3); box-shadow: 0 0 16px var(--primary); }
}

.hero-eyebrow {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 5px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.hero-title {
  font-size: clamp(42px, 5.5vw, 72px);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 28px;
  letter-spacing: -1px;
}

.hero-title .line-block {
  display: block;
}

.hero-desc {
  font-size: 17px;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 44px;
  max-width: 580px;
}

.hero-desc strong { color: var(--primary); font-weight: 600; }

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

/* 统计数字 */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, auto);
  gap: 0;
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  max-width: 520px;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 20px 24px;
  gap: 4px;
  border-right: 1px solid var(--border);
  position: relative;
}
.stat-item:last-child { border-right: none; }

.stat-item::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-main);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}
.stat-item:hover::before { transform: scaleX(1); }

.stat-num {
  font-size: 28px;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 11px;
  color: var(--text-muted);
  white-space: nowrap;
  letter-spacing: 0.5px;
}

/* Hero视觉区域 */
.hero-visual {
  flex: 0 0 560px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 36px 40px;
}

/* 3D科技感展示板 */
.hero-tech-board {
  width: 100%;
  max-width: 540px;
  position: relative;
}

.tech-board-inner {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 32px;
  backdrop-filter: blur(16px);
  position: relative;
  overflow: hidden;
}

.tech-board-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  pointer-events: none;
}

.tech-board-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.tb-dots {
  display: flex;
  gap: 6px;
}
.tb-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
}
.tb-dot:nth-child(1) { background: #ff5f57; }
.tb-dot:nth-child(2) { background: #febc2e; }
.tb-dot:nth-child(3) { background: #28c840; }

.tb-title {
  font-size: 13px;
  color: var(--text-muted);
  font-family: 'SF Mono', 'Consolas', monospace;
  letter-spacing: 1px;
  flex: 1;
  text-align: center;
}

.tb-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: #00ff88;
  font-weight: 600;
}
.tb-status::before {
  content: '';
  width: 6px; height: 6px;
  background: #00ff88;
  border-radius: 50%;
  animation: pulse 2s infinite;
  box-shadow: 0 0 8px #00ff88;
}

/* AI模型指标 */
.ai-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 20px;
}

.ai-metric-card {
  background: rgba(0,212,255,0.04);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.ai-metric-card:hover {
  border-color: var(--border-hover);
  background: rgba(0,212,255,0.07);
}

.ai-metric-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--grad-main);
  opacity: 0.6;
}

.amc-label {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
  font-family: monospace;
}

.amc-value {
  font-size: 22px;
  font-weight: 800;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 4px;
}

.amc-bar {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  margin-top: 8px;
  overflow: hidden;
}

.amc-bar-fill {
  height: 100%;
  background: var(--grad-main);
  border-radius: 2px;
  animation: bar-fill 2s ease-out forwards;
}

@keyframes bar-fill {
  from { width: 0; }
}

/* 能力流 */
.cap-flow {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.cap-flow-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: var(--transition);
  animation: slide-in 0.5s ease backwards;
}

.cap-flow-item:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
  background: var(--bg-card-hover);
}

@keyframes slide-in {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

.cfi-icon {
  width: 32px; height: 32px;
  background: rgba(0,212,255,0.1);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 13px;
  flex-shrink: 0;
}

.cfi-name { flex: 1; font-weight: 500; }

.cfi-status {
  font-size: 10px;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
}

.status-active {
  background: rgba(0,255,136,0.12);
  color: #00ff88;
  border: 1px solid rgba(0,255,136,0.2);
}

.status-ai {
  background: rgba(0,212,255,0.1);
  color: var(--primary);
  border: 1px solid rgba(0,212,255,0.2);
}

/* 浮动装饰卡片 */
.hero-float-card {
  position: absolute;
  background: var(--bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-hover);
  border-radius: 14px;
  padding: 12px 18px;
  white-space: nowrap;
  font-size: 13px;
  box-shadow: var(--shadow-card), 0 0 24px rgba(0,212,255,0.1);
  animation: float-card 4s ease-in-out infinite;
  z-index: 10;
}

.hero-float-card.card-tl {
  top: 4px; left: 8px;
  animation-delay: -1s;
}
.hero-float-card.card-br {
  bottom: 4px; right: 8px;
  animation-delay: -2.5s;
}

@keyframes float-card {
  0%, 100% { transform: translateY(0) rotate(-1deg); }
  50% { transform: translateY(-8px) rotate(1deg); }
}

.fc-label {
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  margin-bottom: 4px;
  text-transform: uppercase;
  font-family: monospace;
}
.fc-value {
  font-weight: 700;
  color: var(--primary);
  font-size: 13px;
}

/* ===== 滚动指示器 ===== */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
}

.scroll-indicator {
  width: 24px; height: 40px;
  border: 1.5px solid var(--border);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding: 6px 0;
}

.scroll-dot {
  width: 4px; height: 8px;
  background: var(--primary);
  border-radius: 2px;
  animation: scroll-anim 2s ease-in-out infinite;
}

@keyframes scroll-anim {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(16px); opacity: 0; }
}

/* ===== 技术标语带 ===== */
.tech-band {
  overflow: hidden;
  padding: 0;
  position: relative;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.tech-band::before,
.tech-band::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.tech-band::before {
  left: 0;
  background: linear-gradient(to right, var(--bg-body) 0%, transparent 100%);
}
.tech-band::after {
  right: 0;
  background: linear-gradient(to left, var(--bg-body) 0%, transparent 100%);
}

.tech-band-track {
  display: flex;
  align-items: center;
  gap: 0;
  padding: 14px 0;
  background: linear-gradient(
    135deg,
    rgba(0,212,255,0.03) 0%,
    rgba(123,47,247,0.03) 50%,
    rgba(0,212,255,0.03) 100%
  );
}

[data-theme="light"] .tech-band-track {
  background: linear-gradient(
    135deg,
    rgba(0,102,204,0.03) 0%,
    rgba(91,31,212,0.03) 50%,
    rgba(0,102,204,0.03) 100%
  );
}

.tech-band-inner {
  display: flex;
  align-items: center;
  gap: 0;
  animation: slide 40s linear infinite;
  white-space: nowrap;
  flex-shrink: 0;
}

.tech-band-inner span {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.8px;
  padding: 5px 20px;
  white-space: nowrap;
  transition: color 0.3s;
}

.tech-band-inner span:hover {
  color: var(--primary);
}

.tech-band-inner .sep {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4px;
  height: 4px;
  background: var(--primary);
  border-radius: 50%;
  opacity: 0.35;
  flex-shrink: 0;
  margin: 0 2px;
  font-size: 0;
}

@keyframes slide {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* ===== 核心能力区域 ===== */
.capabilities {
  padding: 100px 80px;
  max-width: 1400px;
  margin: 0 auto;
}

.capabilities-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.cap-card {
  position: relative;
  border-radius: 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  overflow: hidden;
  transition: var(--transition);
  display: block;
}

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

.cap-card:hover .cap-glow { opacity: 1; }
.cap-card:hover .cap-arrow { opacity: 1; transform: translateX(0); }

.cap-card-inner {
  padding: 32px 28px;
  position: relative;
  z-index: 1;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.cap-number {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.5;
  font-family: monospace;
}

.cap-icon-wrap {
  width: 52px; height: 52px;
  filter: drop-shadow(0 0 14px rgba(0,212,255,0.4));
  margin: 4px 0;
}

.cap-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.cap-subtitle {
  font-size: 12px;
  color: var(--primary);
  font-weight: 600;
  letter-spacing: 0.5px;
}

.cap-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.75;
  flex: 1;
}

.cap-features-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: auto;
}

.feat-tag {
  font-size: 11px;
  padding: 3px 9px;
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 4px;
  color: var(--text-muted);
  font-weight: 500;
}

[data-theme="light"] .feat-tag {
  background: rgba(0,102,204,0.07);
  border-color: rgba(0,102,204,0.15);
}

.cap-arrow {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  color: var(--primary);
  opacity: 0;
  transform: translateX(-8px);
  transition: var(--transition);
  margin-top: 4px;
  font-size: 14px;
}

.cap-glow {
  position: absolute;
  inset: 0;
  background: var(--grad-card);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 0;
  border-radius: 18px;
}

/* ===== 数据展示区 ===== */
.data-showcase {
  padding: 100px 0;
}

.data-showcase-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 80px;
}

[data-theme="dark"] .data-showcase {
  background: linear-gradient(180deg, transparent, rgba(0,212,255,0.025) 50%, transparent);
}
[data-theme="light"] .data-showcase {
  background: linear-gradient(180deg, transparent, rgba(0,102,204,0.04) 50%, transparent);
}

.data-showcase .section-header { margin-bottom: 56px; }

.data-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 20px;
}

.data-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 32px 20px;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.data-card::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-main);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.data-card:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow);
}

.data-card:hover::before { transform: scaleX(1); }

.data-icon {
  font-size: 26px;
  color: var(--primary);
  margin-bottom: 14px;
  opacity: 0.85;
}

.data-num {
  font-size: 30px;
  font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: 10px;
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 2px;
}

.data-num span:last-child { font-size: 14px; font-weight: 600; }

.data-label {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.5;
  font-weight: 500;
}

/* ===== 技术架构 ===== */
.tech-arch {
  padding: 100px 80px;
  max-width: 1400px;
  margin: 0 auto;
}

.arch-diagram {
  display: flex;
  flex-direction: column;
  gap: 0;
  max-width: 100%;
  margin: 0 auto;
}

.arch-layer {
  display: flex;
  align-items: center;
  gap: 28px;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 32px;
  background: var(--bg-card);
  transition: var(--transition);
}

.arch-layer:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  box-shadow: 0 0 24px rgba(0,212,255,0.1);
}

.layer-app { border-color: rgba(0,212,255,0.2); }
.layer-platform { border-color: rgba(123,47,247,0.22); }
.layer-ai { border-color: rgba(0,212,255,0.16); }
.layer-data { border-color: rgba(123,47,247,0.16); }
.layer-device { border-color: rgba(0,212,255,0.12); }

.layer-label {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 700;
  color: var(--primary);
  width: 56px;
  text-align: center;
  letter-spacing: 1px;
}

.layer-items {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
}

.layer-items span {
  font-size: 13px;
  padding: 5px 14px;
  background: rgba(0,212,255,0.05);
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: 6px;
  color: var(--text-secondary);
  font-weight: 500;
  transition: var(--transition);
}

.layer-items span:hover {
  background: rgba(0,212,255,0.1);
  border-color: rgba(0,212,255,0.25);
  color: var(--text-primary);
}

[data-theme="light"] .layer-items span {
  background: rgba(0,102,204,0.05);
  border-color: rgba(0,102,204,0.1);
}
[data-theme="light"] .layer-items span:hover {
  background: rgba(0,102,204,0.1);
  border-color: rgba(0,102,204,0.25);
}

.arch-arrow {
  text-align: center;
  color: var(--primary);
  padding: 10px 0;
  opacity: 0.35;
  font-size: 11px;
}

/* ===== 案例区 ===== */
.cases-section {
  padding: 100px 80px;
  max-width: 1400px;
  margin: 0 auto;
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.case-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 36px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.case-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-main);
  transform: scaleX(0);
  transition: transform 0.4s ease;
}

.case-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow), var(--shadow-card);
}
.case-card:hover::before { transform: scaleX(1); }

.case-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  color: var(--primary);
  margin-bottom: 24px;
}
.case-logo span { font-size: 20px; font-weight: 800; color: var(--text-primary); }

.case-metrics { display: flex; gap: 28px; margin-bottom: 18px; }
.metric { display: flex; flex-direction: column; gap: 2px; }

.metric-val {
  font-size: 26px; font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.metric-key { font-size: 12px; color: var(--text-muted); }

.case-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.8; margin-bottom: 18px; }

.case-tag {
  display: inline-block;
  font-size: 11px; padding: 4px 12px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.2);
  border-radius: 4px; color: var(--primary);
  font-weight: 600;
}

/* ===== CTA区域 ===== */
.cta-section {
  padding: 100px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.cta-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 70% at 50% 50%, rgba(0,212,255,0.05) 0%, transparent 70%);
  pointer-events: none;
}

[data-theme="light"] .cta-bg {
  background: radial-gradient(ellipse 80% 70% at 50% 50%, rgba(0,102,204,0.05) 0%, transparent 70%);
}

.cta-content { position: relative; z-index: 1; max-width: 680px; margin: 0 auto; }

.cta-content h2 {
  font-size: clamp(30px, 4vw, 50px);
  font-weight: 800; margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.cta-content p { color: var(--text-secondary); margin-bottom: 44px; font-size: 17px; }

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

/* ===== 页脚 ===== */
.footer {
  padding: 80px 32px 32px;
  border-top: 1px solid var(--border);
  background: var(--footer-bg);
}

[data-theme="light"] .footer {
  color: rgba(255,255,255,0.9);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 56px;
  max-width: 1400px;
  margin: 0 auto 56px;
}

.footer-desc {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  line-height: 1.85;
  margin-bottom: 24px;
}

.footer-social { display: flex; gap: 12px; }

.social-link {
  width: 38px; height: 38px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5);
  font-size: 15px;
  transition: var(--transition);
}
.social-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: rgba(0,212,255,0.08);
}

.footer-col h4 {
  font-size: 13px; font-weight: 700;
  margin-bottom: 18px;
  color: rgba(255,255,255,0.9);
  letter-spacing: 1px;
  text-transform: uppercase;
}

.footer-col ul {
  list-style: none;
  display: flex; flex-direction: column; gap: 12px;
}

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255,255,255,0.45);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--primary); }

.contact-list li {
  display: flex; align-items: flex-start;
  gap: 10px; font-size: 13px;
  color: rgba(255,255,255,0.45);
}
.contact-list li i { color: var(--primary); margin-top: 3px; width: 14px; flex-shrink: 0; }

.footer-bottom {
  max-width: 1400px; margin: 0 auto;
  padding-top: 28px;
  border-top: 1px solid rgba(255,255,255,0.06);
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; font-size: 12px;
  color: rgba(255,255,255,0.25);
  flex-wrap: wrap;
}
.footer-bottom p, .footer-bottom a {
  color: rgba(255,255,255,0.25);
  text-decoration: none;
  transition: color 0.2s;
}
.footer-bottom a:hover { color: var(--primary); }
.footer-beian {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.footer-gongan {
  display: flex; align-items: center; gap: 5px;
}
.footer-gongan img,
.footer-gongan .gongan-icon {
  width: 14px; height: 14px; object-fit: contain;
  flex-shrink: 0; vertical-align: middle;
}

/* ═══════════════════════════════════════════════
   详情页 v3 — 沉浸式 AI 科技风
   ═══════════════════════════════════════════════ */

/* ── 公共容器 ── */
.dp-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 80px;
}

/* ── 公共按钮 ── */
.dp-btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 10px;
  background: var(--grad-main);
  color: #fff; font-weight: 700; font-size: 15px;
  transition: var(--transition);
  box-shadow: 0 0 28px rgba(0,212,255,0.25);
}
.dp-btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 0 48px rgba(0,212,255,0.4);
}
.dp-btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 10px;
  border: 1.5px solid var(--border-hover);
  color: var(--primary); font-weight: 600; font-size: 15px;
  transition: var(--transition);
}
.dp-btn-outline:hover {
  background: rgba(0,212,255,0.07); transform: translateY(-3px);
}
.dp-btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 28px; border-radius: 10px;
  border: 1.5px solid rgba(255,255,255,0.2);
  color: rgba(255,255,255,0.8); font-weight: 600; font-size: 15px;
  transition: var(--transition);
}
.dp-btn-ghost:hover { border-color: rgba(255,255,255,0.5); color: #fff; }
.dp-btn-lg { padding: 16px 40px; font-size: 16px; }

/* ── 渐变文字 ── */
.dp-grad-text {
  background: var(--grad-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── Section 通用标题 ── */
.dp-section-tag {
  display: flex; align-items: center; gap: 12px;
  font-size: 11px; letter-spacing: 5px; font-weight: 700;
  color: var(--primary); text-transform: uppercase;
  margin-bottom: 16px;
}
.dp-tag-line {
  display: inline-block; width: 32px; height: 1px;
  background: var(--grad-main);
}
.dp-section-h2 {
  font-size: clamp(30px, 4vw, 48px); font-weight: 900;
  line-height: 1.15; margin-bottom: 16px;
}
.dp-section-sub {
  font-size: 15px; color: var(--text-secondary);
}
.dp-section-header {
  text-align: center; margin-bottom: 64px;
}

/* ═══════════ HERO ═══════════ */
.dp-hero {
  min-height: 100vh;
  padding: calc(var(--nav-height) + 60px) 0 80px;
  position: relative; overflow: hidden;
  display: flex; flex-direction: column;
}

/* 背景层 */
.dp-hero-bg { position: absolute; inset: 0; pointer-events: none; }

.dp-bg-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 100% 100% at 50% 0%, black 0%, transparent 75%);
}

.dp-bg-orb {
  position: absolute; border-radius: 50%;
  filter: blur(80px); pointer-events: none;
}
.dp-orb-1 {
  width: 600px; height: 600px;
  background: rgba(0,212,255,0.06);
  top: -100px; right: -100px;
}
.dp-orb-2 {
  width: 400px; height: 400px;
  background: rgba(123,47,247,0.08);
  bottom: 0; left: 10%;
}
.dp-orb-3 {
  width: 300px; height: 300px;
  background: rgba(0,255,136,0.04);
  top: 40%; left: 40%;
}

/* 扫描线 */
.dp-scan-line {
  position: absolute; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.6), transparent);
  animation: dp-scan 8s linear infinite;
  top: 0;
}
@keyframes dp-scan {
  0%   { top: 0; opacity: 0; }
  5%   { opacity: 1; }
  95%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* 数据流粒子 */
.dp-data-stream {
  position: absolute; inset: 0; overflow: hidden;
}
.dp-data-stream span {
  position: absolute; display: block;
  width: 1px; background: linear-gradient(to bottom, transparent, rgba(0,212,255,0.5), transparent);
  animation: dp-stream linear infinite;
}
.dp-data-stream span:nth-child(1)  { left: 10%; height: 80px; animation-duration: 4s; animation-delay: 0s; }
.dp-data-stream span:nth-child(2)  { left: 25%; height: 120px; animation-duration: 6s; animation-delay: 1s; }
.dp-data-stream span:nth-child(3)  { left: 40%; height: 60px; animation-duration: 5s; animation-delay: 2s; }
.dp-data-stream span:nth-child(4)  { left: 55%; height: 100px; animation-duration: 7s; animation-delay: 0.5s; }
.dp-data-stream span:nth-child(5)  { left: 70%; height: 90px; animation-duration: 4.5s; animation-delay: 1.5s; }
.dp-data-stream span:nth-child(6)  { left: 80%; height: 70px; animation-duration: 5.5s; animation-delay: 3s; }
.dp-data-stream span:nth-child(7)  { left: 15%; height: 50px; animation-duration: 3.5s; animation-delay: 2.5s; }
.dp-data-stream span:nth-child(8)  { left: 35%; height: 110px; animation-duration: 6.5s; animation-delay: 0.8s; }
.dp-data-stream span:nth-child(9)  { left: 60%; height: 75px; animation-duration: 4.2s; animation-delay: 1.8s; }
.dp-data-stream span:nth-child(10) { left: 90%; height: 95px; animation-duration: 5.8s; animation-delay: 3.5s; }
@keyframes dp-stream {
  0%   { top: -120px; opacity: 0; }
  10%  { opacity: 1; }
  90%  { opacity: 1; }
  100% { top: 110%; opacity: 0; }
}

/* Hero 内容 */
.dp-hero-inner {
  position: relative; z-index: 2;
  max-width: 1400px; margin: 0 auto; padding: 0 80px;
  flex: 1;
}

/* 面包屑 */
.dp-breadcrumb {
  display: flex; align-items: center; gap: 8px;
  font-size: 13px; color: var(--text-muted);
  margin-bottom: 60px;
}
.dp-breadcrumb a { transition: color 0.2s; }
.dp-breadcrumb a:hover { color: var(--primary); }
.dp-breadcrumb i { font-size: 9px; }

/* 主体双栏 */
.dp-hero-body {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
  min-height: 560px;
}

/* 左侧文字 */
.dp-hero-text { display: flex; flex-direction: column; gap: 0; }

.dp-hero-label {
  display: flex; align-items: center; gap: 10px;
  font-size: 11px; letter-spacing: 4px;
  color: var(--primary); font-weight: 700;
  margin-bottom: 20px;
}
.dp-label-dot {
  width: 4px; height: 4px; border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 6px var(--primary);
}

.dp-hero-title {
  font-size: clamp(40px, 5vw, 72px);
  font-weight: 900; line-height: 1.1;
  margin-bottom: 22px;
  letter-spacing: -1px;
}
.dp-title-line {
  display: block;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dp-hero-sub {
  font-size: 17px; color: var(--text-secondary);
  line-height: 1.7; margin-bottom: 32px;
  max-width: 520px;
}

/* 核心价值条 */
.dp-core-value-strip {
  display: flex; align-items: flex-start; gap: 14px;
  background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(123,47,247,0.05));
  border: 1px solid rgba(0,212,255,0.15);
  border-left: 3px solid var(--primary);
  border-radius: 0 10px 10px 0;
  padding: 16px 20px;
  margin-bottom: 36px;
}
.dp-cv-icon {
  color: var(--primary); font-size: 16px; margin-top: 2px; flex-shrink: 0;
}
.dp-core-value-strip p {
  font-size: 14px; color: var(--text-secondary); line-height: 1.7;
}

.dp-hero-actions {
  display: flex; gap: 14px; flex-wrap: wrap;
  margin-bottom: 36px;
}

/* 状态栏 */
.dp-status-bar {
  display: flex; gap: 20px; flex-wrap: wrap;
}
.dp-status-item {
  display: flex; align-items: center; gap: 6px;
  font-size: 12px; color: var(--text-muted); font-weight: 500;
}
.dp-status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--text-muted);
}
.dp-status-active .dp-status-dot {
  background: #00ff88;
  box-shadow: 0 0 8px #00ff88;
  animation: dp-blink 2s ease-in-out infinite;
}
.dp-status-active { color: #00ff88; }
@keyframes dp-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* 右侧视觉 */
.dp-hero-visual {
  position: relative; display: flex;
  align-items: center; justify-content: center;
}

/* 图标舞台 */
.dp-icon-stage {
  position: relative; width: 380px; height: 380px;
  display: flex; align-items: center; justify-content: center;
}

/* 光晕环 */
.dp-icon-halo {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.15);
  animation: dp-halo-pulse 4s ease-in-out infinite;
}
.dp-halo-outer  { inset: 0;     animation-delay: 0s; }
.dp-halo-mid    { inset: 40px;  animation-delay: 0.6s; }
.dp-halo-inner  { inset: 80px;  animation-delay: 1.2s; }
@keyframes dp-halo-pulse {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 0.9; transform: scale(1.02); }
}

/* 轨道 */
.dp-orbit {
  position: absolute; border-radius: 50%;
  border: 1px dashed rgba(0,212,255,0.12);
}
.dp-orbit-1 { inset: 20px; animation: dp-orbit-spin 12s linear infinite; }
.dp-orbit-2 { inset: 60px; animation: dp-orbit-spin 18s linear infinite reverse; }
.dp-orbit-3 { inset: 100px; animation: dp-orbit-spin 8s linear infinite; }
@keyframes dp-orbit-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}

.dp-orbit-node {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid rgba(0,212,255,0.3);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 11px;
}

/* 核心图标 */
.dp-icon-core {
  width: 120px; height: 120px;
  position: relative; z-index: 2;
  filter: drop-shadow(0 0 40px rgba(0,212,255,0.6));
  animation: dp-float 4s ease-in-out infinite;
}
.dp-icon-core svg { width: 100%; height: 100%; }
@keyframes dp-float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-14px); }
}

/* 浮动数据卡 */
.dp-float-card {
  position: absolute;
  background: rgba(3,8,15,0.85);
  border: 1px solid rgba(0,212,255,0.25);
  border-radius: 10px; padding: 10px 16px;
  backdrop-filter: blur(12px);
  animation: dp-float-card 5s ease-in-out infinite;
}
.dp-fc-tl { top: 20px; left: -20px; animation-delay: 0s; }
.dp-fc-br { bottom: 30px; right: -20px; animation-delay: 2.5s; }
@keyframes dp-float-card {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.dp-fc-label { font-size: 9px; letter-spacing: 2px; color: var(--text-muted); font-weight: 600; }
.dp-fc-val {
  font-size: 18px; font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.dp-fc-val span { font-size: 13px; opacity: 0.6; }
.dp-fc-online {
  font-size: 13px; font-weight: 700; color: #00ff88;
  -webkit-text-fill-color: #00ff88;
}

/* Hero 底部渐变 */
.dp-hero-fade {
  position: absolute; bottom: 0; left: 0; right: 0;
  height: 120px;
  background: linear-gradient(to bottom, transparent, var(--bg-body));
  pointer-events: none;
}

[data-theme="light"] .dp-float-card {
  background: rgba(255,255,255,0.9);
  border-color: rgba(0,102,204,0.2);
}

/* ═══════════ OVERVIEW ═══════════ */
.dp-overview {
  padding: 120px 0 100px;
  position: relative;
}
.dp-overview-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
}

.dp-ov-text .dp-section-tag { justify-content: flex-start; }
.dp-ov-text .dp-section-h2 { margin-bottom: 24px; }

.dp-desc-block {
  border-left: 2px solid rgba(0,212,255,0.3);
  padding-left: 20px;
  margin-bottom: 40px;
}
.dp-desc-block p {
  font-size: 15px; color: var(--text-secondary); line-height: 1.85;
}

/* KPI 行 */
.dp-kpi-row {
  display: flex; align-items: center; gap: 0;
  background: var(--bg-card);
  border: 1px solid var(--border); border-radius: 14px;
  overflow: hidden;
}
.dp-kpi-item {
  flex: 1; padding: 22px 24px; text-align: center;
}
.dp-kpi-val {
  font-size: 24px; font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 4px;
}
.dp-kpi-label { font-size: 12px; color: var(--text-muted); }
.dp-kpi-divider { width: 1px; height: 48px; background: var(--border); flex-shrink: 0; }

/* 右侧可视化卡 */
.dp-vis-card {
  background: rgba(3,8,15,0.7);
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: 18px; overflow: hidden;
  backdrop-filter: blur(16px);
  box-shadow: 0 32px 80px rgba(0,0,0,0.5), 0 0 0 1px rgba(0,212,255,0.08);
}
[data-theme="light"] .dp-vis-card {
  background: rgba(240,244,248,0.9);
  border-color: rgba(0,102,204,0.18);
  box-shadow: 0 20px 60px rgba(0,40,120,0.12);
}
.dp-vis-header {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  background: rgba(0,212,255,0.04);
  border-bottom: 1px solid rgba(0,212,255,0.1);
}
.dp-vis-dots { display: flex; gap: 6px; }
.dp-vis-dots span {
  width: 10px; height: 10px; border-radius: 50%;
}
.dp-vis-dots span:nth-child(1) { background: #ff5f57; }
.dp-vis-dots span:nth-child(2) { background: #febc2e; }
.dp-vis-dots span:nth-child(3) { background: #28c840; }
.dp-vis-title {
  font-size: 11px; letter-spacing: 2px;
  color: var(--text-muted); font-weight: 600;
}
.dp-vis-body {
  padding: 40px; position: relative;
  display: flex; flex-direction: column; align-items: center; gap: 30px;
}
.dp-vis-center-icon {
  width: 80px; height: 80px;
  filter: drop-shadow(0 0 24px rgba(0,212,255,0.5));
  animation: dp-float 4s ease-in-out infinite;
}
.dp-vis-center-icon svg { width: 100%; height: 100%; }
.dp-vis-rings { position: absolute; inset: 40px; pointer-events: none; }
.dp-vring {
  position: absolute; border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.12);
  animation: dp-halo-pulse 3s ease-in-out infinite;
}
.dp-vr1 { inset: 0; }
.dp-vis-pulse {
  position: absolute; inset: 20px; border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.08);
  animation: dp-halo-pulse 3s ease-in-out infinite 1.5s;
}

/* 日志条 */
.dp-log-lines {
  width: 100%;
  background: rgba(0,0,0,0.3);
  border: 1px solid rgba(0,212,255,0.1);
  border-radius: 8px; padding: 16px 18px;
  display: flex; flex-direction: column; gap: 8px;
}
[data-theme="light"] .dp-log-lines {
  background: rgba(0,40,80,0.06);
  border-color: rgba(0,102,204,0.12);
}
.dp-log-line { font-size: 12px; font-family: 'Menlo', 'Consolas', monospace; color: var(--text-muted); }
.dp-log-tag {
  display: inline-block; padding: 1px 5px; border-radius: 3px;
  font-weight: 700; margin-right: 6px; font-size: 11px;
}
.log-ok   { background: rgba(0,255,136,0.15); color: #00ff88; }
.log-info { background: rgba(0,212,255,0.15); color: var(--primary); }
.log-data { background: rgba(123,47,247,0.18); color: #a06cff; }
.log-ai   { background: rgba(255,107,53,0.15); color: #ff9966; }
.dp-log-blink { color: var(--text-secondary); }

/* ═══════════ FEATURES ═══════════ */
.dp-features {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(0,212,255,0.02) 50%, transparent);
  position: relative;
}

.dp-features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.dp-feat-card {
  position: relative; overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 32px 32px;
  transition: var(--transition);
  cursor: default;
  animation: dp-fadein-up 0.6s ease both;
  animation-delay: calc(var(--delay) * 100ms);
}
.dp-feat-card:hover {
  border-color: rgba(0,212,255,0.4);
  transform: translateY(-8px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4), 0 0 0 1px rgba(0,212,255,0.12);
}

/* 顶部渐变横条 */
.dp-feat-top-bar {
  position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--grad-main); opacity: 0;
  transition: opacity 0.3s ease;
}
.dp-feat-card:hover .dp-feat-top-bar { opacity: 1; }

.dp-feat-head {
  display: flex; align-items: flex-start; justify-content: space-between;
  margin-bottom: 20px;
}
.dp-feat-num {
  font-size: 52px; font-weight: 900; line-height: 1;
  background: var(--grad-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
  opacity: 0.1;
}
.dp-feat-icon-wrap {
  width: 46px; height: 46px; border-radius: 12px;
  background: rgba(0,212,255,0.08);
  border: 1px solid rgba(0,212,255,0.15);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 20px;
  transition: var(--transition);
}
.dp-feat-card:hover .dp-feat-icon-wrap {
  background: rgba(0,212,255,0.15);
  box-shadow: 0 0 20px rgba(0,212,255,0.2);
}

.dp-feat-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.dp-feat-desc { font-size: 14px; color: var(--text-secondary); line-height: 1.75; margin-bottom: 20px; }

/* AI 标签 */
.dp-feat-badge {
  display: inline-flex; align-items: center;
  font-size: 10px; letter-spacing: 2px; font-weight: 700;
  padding: 4px 10px; border-radius: 4px;
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.15);
  color: var(--primary);
  opacity: 0; transform: translateY(4px);
  transition: all 0.3s ease;
}
.dp-feat-card:hover .dp-feat-badge { opacity: 1; transform: translateY(0); }

/* 底部光条 */
.dp-feat-glow-line {
  position: absolute; bottom: 0; left: 0; right: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.4), transparent);
  opacity: 0; transition: opacity 0.3s ease;
}
.dp-feat-card:hover .dp-feat-glow-line { opacity: 1; }

/* ═══════════ PRODUCTS ═══════════ */
.dp-products {
  padding: 100px 0;
  position: relative;
}

.dp-products-track {
  position: relative;
  max-width: 900px; margin: 0 auto;
  display: flex; flex-direction: column; gap: 0;
}

/* 中轴线 */
.dp-track-axis {
  position: absolute; left: 50%; top: 0; bottom: 0;
  width: 2px; transform: translateX(-50%);
  z-index: 0;
}
.dp-track-line {
  position: absolute; inset: 0;
  background: linear-gradient(to bottom, rgba(0,212,255,0.0), rgba(0,212,255,0.3), rgba(123,47,247,0.3), rgba(0,212,255,0.0));
}
.dp-track-flow {
  position: absolute; inset: 0; overflow: hidden;
}
.dp-track-flow::after {
  content: '';
  position: absolute; left: 0; right: 0; height: 80px;
  background: linear-gradient(to bottom, transparent, rgba(0,212,255,0.8), transparent);
  animation: dp-flow-down 3s linear infinite;
}
@keyframes dp-flow-down {
  from { top: -80px; }
  to   { top: 100%; }
}

.dp-prod-item {
  position: relative; z-index: 1;
  display: grid; grid-template-columns: 1fr 40px 1fr;
  gap: 0; align-items: center; padding: 20px 0;
  animation: dp-fadein-up 0.6s ease both;
  animation-delay: calc(var(--delay) * 150ms);
}
.dp-prod-item.dp-prod-even { direction: rtl; }
.dp-prod-item.dp-prod-even > * { direction: ltr; }

.dp-prod-dot-wrap {
  display: flex; align-items: center; justify-content: center;
}
.dp-prod-dot {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--bg-body);
  border: 2px solid rgba(0,212,255,0.5);
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 16px rgba(0,212,255,0.3);
}
.dp-prod-dot-inner {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--grad-main);
}

.dp-prod-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 14px; padding: 28px 32px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.dp-prod-item.dp-prod-even .dp-prod-card { margin-right: 20px; }
.dp-prod-item:not(.dp-prod-even) .dp-prod-card { margin-left: 20px; }
.dp-prod-card:hover { border-color: var(--border-hover); }

.dp-prod-card-top {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 12px;
}
.dp-prod-level { font-size: 16px; font-weight: 800; color: var(--primary); }
.dp-prod-badge {
  font-size: 10px; letter-spacing: 2px; font-weight: 700;
  padding: 3px 8px; border-radius: 4px;
  background: rgba(123,47,247,0.12);
  border: 1px solid rgba(123,47,247,0.25);
  color: #a06cff;
}
.dp-prod-card p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }
.dp-prod-bottom-line {
  position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
  background: var(--grad-main); opacity: 0; transition: opacity 0.3s;
}
.dp-prod-card:hover .dp-prod-bottom-line { opacity: 1; }

/* ═══════════ CASES ═══════════ */
.dp-cases {
  padding: 100px 0;
  background: linear-gradient(180deg, transparent, rgba(123,47,247,0.02) 50%, transparent);
}

.dp-cases-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.dp-case-card {
  position: relative; overflow: hidden;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px; padding: 0;
  transition: var(--transition);
  animation: dp-fadein-up 0.6s ease both;
  animation-delay: calc(var(--delay) * 100ms);
}
.dp-case-card:hover {
  border-color: rgba(0,212,255,0.3);
  transform: translateY(-6px);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
}

/* 案例头部 */
.dp-case-header {
  padding: 24px 28px 20px;
  background: linear-gradient(135deg, rgba(0,212,255,0.05), rgba(123,47,247,0.05));
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.dp-case-logo-wrap { display: flex; align-items: center; gap: 12px; }
.dp-case-logo-icon {
  width: 42px; height: 42px; border-radius: 10px;
  background: rgba(0,212,255,0.1);
  border: 1px solid rgba(0,212,255,0.2);
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 17px;
}
.dp-case-client { font-size: 15px; font-weight: 700; }
.dp-case-badge {
  font-size: 9px; letter-spacing: 2px; font-weight: 700;
  padding: 4px 9px; border-radius: 4px;
  background: rgba(0,255,136,0.1);
  border: 1px solid rgba(0,255,136,0.2);
  color: #00ff88;
}

.dp-case-desc {
  padding: 22px 28px;
  font-size: 14px; color: var(--text-secondary); line-height: 1.75;
}

/* 指标区 */
.dp-case-metrics {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(90px, 1fr));
  gap: 1px;
  background: var(--border);
  border-top: 1px solid var(--border);
}
.dp-metric {
  background: var(--bg-card);
  padding: 18px 16px; text-align: center;
}
.dp-metric-val {
  font-size: 20px; font-weight: 900;
  background: var(--grad-main);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.dp-metric-key { font-size: 11px; color: var(--text-muted); margin-top: 3px; }

/* 扫光效果 */
.dp-case-scan {
  position: absolute; top: 0; left: -100%;
  width: 60%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.04), transparent);
  transition: left 0.5s ease;
  pointer-events: none;
}
.dp-case-card:hover .dp-case-scan { left: 150%; }

/* ═══════════ RELATED ═══════════ */
.dp-related { padding: 100px 0; }

.dp-related-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 14px;
}

.dp-related-card {
  position: relative; overflow: hidden;
  display: flex; flex-direction: column; align-items: center;
  gap: 10px; padding: 28px 12px 22px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 16px; text-align: center;
  transition: var(--transition);
  color: var(--text-secondary); font-weight: 500;
}
.dp-related-card:hover {
  border-color: rgba(0,212,255,0.4); color: var(--primary);
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.3);
}
.dp-related-icon { width: 40px; height: 40px; }
.dp-related-icon svg { width: 100%; height: 100%; }
.dp-related-name { font-size: 12px; line-height: 1.4; }
.dp-related-arrow {
  font-size: 11px; color: var(--primary); opacity: 0;
  transform: translateX(-4px); transition: var(--transition);
}
.dp-related-card:hover .dp-related-arrow { opacity: 1; transform: translateX(0); }
.dp-related-glow {
  position: absolute; inset: 0; border-radius: 16px;
  background: radial-gradient(circle at 50% 50%, rgba(0,212,255,0.08), transparent 70%);
  opacity: 0; transition: opacity 0.3s;
}
.dp-related-card:hover .dp-related-glow { opacity: 1; }

/* ═══════════ CTA ═══════════ */
.dp-cta {
  padding: 140px 0;
  position: relative; overflow: hidden;
  text-align: center;
}

.dp-cta-bg { position: absolute; inset: 0; pointer-events: none; }
.dp-cta-orb {
  position: absolute; border-radius: 50%; filter: blur(80px);
}
.dp-cta-orb-l {
  width: 500px; height: 500px;
  background: rgba(0,212,255,0.06);
  left: -100px; top: 50%; transform: translateY(-50%);
}
.dp-cta-orb-r {
  width: 500px; height: 500px;
  background: rgba(123,47,247,0.08);
  right: -100px; top: 50%; transform: translateY(-50%);
}
.dp-cta-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--grid-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-color) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 70% at 50% 50%, black, transparent);
}

/* 装饰环 */
.dp-cta-ring {
  position: absolute; top: 50%; left: 50%;
  border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.08);
  transform: translate(-50%, -50%);
  animation: dp-cta-ring 8s ease-in-out infinite;
}
.dp-cta-ring-1 { width: 400px; height: 400px; animation-delay: 0s; }
.dp-cta-ring-2 { width: 600px; height: 600px; animation-delay: 1.5s; opacity: 0.7; }
.dp-cta-ring-3 { width: 800px; height: 800px; animation-delay: 3s; opacity: 0.4; }
@keyframes dp-cta-ring {
  0%, 100% { opacity: 0.3; transform: translate(-50%, -50%) scale(1); }
  50% { opacity: 0.8; transform: translate(-50%, -50%) scale(1.04); }
}

.dp-cta-content {
  position: relative; z-index: 1;
  max-width: 700px; margin: 0 auto; padding: 0 32px;
}
.dp-cta-tag {
  font-size: 11px; letter-spacing: 5px; font-weight: 700;
  color: var(--primary); margin-bottom: 20px;
}
.dp-cta h2 {
  font-size: clamp(32px, 5vw, 56px); font-weight: 900;
  margin-bottom: 18px;
}
.dp-cta p {
  font-size: 16px; color: var(--text-secondary); margin-bottom: 44px;
}
.dp-cta-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ═══════════ 入场动画 ═══════════ */
@keyframes dp-fadein-up {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* 详情案例区（兼容旧引用） */
.detail-cases { padding: 80px 32px; max-width: 1400px; margin: 0 auto; }

/* ===== 页面Hero（通用）===== */
.page-hero {
  padding: calc(var(--nav-height) + 80px) 32px 80px;
  text-align: center;
  background: radial-gradient(ellipse 60% 50% at 50% 50%, rgba(123,47,247,0.05) 0%, transparent 70%);
}
.page-hero-content { max-width: 700px; margin: 0 auto; }
.page-hero h1 { font-size: clamp(36px, 5vw, 56px); font-weight: 900; margin: 16px 0; }
.page-hero p { font-size: 16px; color: var(--text-secondary); }

/* ===== 关于我们 ===== */
.about-intro { padding: 80px 32px; max-width: 1400px; margin: 0 auto; }

.about-container {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 80px; align-items: center;
}

.about-text h2 { font-size: 38px; font-weight: 800; margin-bottom: 22px; }
.about-text p { font-size: 15px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 16px; }

.about-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 24px; }
.about-tags span {
  padding: 6px 16px;
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 20px; font-size: 13px;
  color: var(--primary); font-weight: 500;
}

[data-theme="light"] .about-tags span {
  background: rgba(0,102,204,0.07);
  border-color: rgba(0,102,204,0.15);
}

.company-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 22px; padding: 40px;
  display: flex; flex-direction: column; gap: 24px;
}

.company-info-item {
  display: flex; align-items: center;
  gap: 16px; color: var(--primary); font-size: 22px;
}
.company-info-item div { display: flex; flex-direction: column; gap: 2px; }
.company-info-item strong { font-size: 12px; color: var(--text-muted); font-weight: 400; letter-spacing: 0.5px; }
.company-info-item span { font-size: 15px; color: var(--text-primary); font-weight: 600; }

.about-values { padding: 80px 32px; max-width: 1400px; margin: 0 auto; }

.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

.value-item {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 18px; padding: 40px 30px;
  text-align: center; transition: var(--transition);
}
.value-item:hover { border-color: var(--border-hover); transform: translateY(-6px); }
.value-icon { font-size: 34px; color: var(--primary); margin-bottom: 18px; }
.value-item h3 { font-size: 18px; font-weight: 700; margin-bottom: 12px; }
.value-item p { font-size: 14px; color: var(--text-secondary); line-height: 1.75; }

/* ===== 联系我们 ===== */
.contact-section { padding: 80px 32px; max-width: 1400px; margin: 0 auto; }

.contact-container {
  display: grid; grid-template-columns: 1fr 1.3fr;
  gap: 80px; align-items: start;
}

.contact-info h2 { font-size: 34px; font-weight: 800; margin-bottom: 18px; }
.contact-info > p { font-size: 15px; color: var(--text-secondary); line-height: 1.85; margin-bottom: 36px; }

.contact-items { display: flex; flex-direction: column; gap: 22px; margin-bottom: 32px; }

.contact-item { display: flex; align-items: center; gap: 18px; }

.contact-icon {
  width: 46px; height: 46px;
  background: rgba(0,212,255,0.07);
  border: 1px solid rgba(0,212,255,0.18);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary); font-size: 17px; flex-shrink: 0;
}
[data-theme="light"] .contact-icon { background: rgba(0,102,204,0.07); border-color: rgba(0,102,204,0.18); }

.contact-item div { display: flex; flex-direction: column; gap: 2px; }
.contact-item strong { font-size: 12px; color: var(--text-muted); font-weight: 400; }
.contact-item span { font-size: 15px; color: var(--text-primary); font-weight: 500; }

.service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.service-tags span {
  font-size: 11px; padding: 4px 12px;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.12);
  border-radius: 4px; color: var(--text-muted); font-weight: 500;
}

/* 表单 */
.contact-form-wrap {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 22px; padding: 44px;
}
.contact-form { display: flex; flex-direction: column; gap: 22px; }

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

.form-group { display: flex; flex-direction: column; gap: 8px; }
.form-group label { font-size: 13px; color: var(--text-secondary); font-weight: 500; }
.required { color: #ff4444; }

.form-group input,
.form-group textarea {
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 10px; padding: 13px 16px;
  font-size: 14px; color: var(--text-primary);
  transition: var(--transition);
  width: 100%; font-family: inherit;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0,212,255,0.1);
}

[data-theme="light"] .form-group input:focus,
[data-theme="light"] .form-group textarea:focus {
  box-shadow: 0 0 0 3px rgba(0,102,204,0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--text-muted); }

.form-message {
  padding: 13px 16px; border-radius: 9px;
  font-size: 14px; text-align: center;
}
.form-message.success {
  background: rgba(0,255,100,0.08);
  border: 1px solid rgba(0,255,100,0.18);
  color: #00d46a;
}
.form-message.error {
  background: rgba(255,50,50,0.08);
  border: 1px solid rgba(255,50,50,0.18);
  color: #ff4444;
}

/* ===== 详情案例区 ===== */
.detail-cases { padding: 80px 32px; max-width: 1400px; margin: 0 auto; }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
  .capabilities-grid { grid-template-columns: repeat(2, 1fr); }
  .data-grid { grid-template-columns: repeat(3, 1fr); }
  .related-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .hero-visual { flex: 0 0 460px; }
  .hero { padding-left: 48px; padding-right: 48px; gap: 56px; }
  .capabilities, .data-showcase-inner, .tech-arch, .cases-section, .cta-section {
    padding-left: 48px; padding-right: 48px;
  }
}

@media (max-width: 992px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding-top: calc(var(--nav-height) + 40px);
    padding-left: 32px; padding-right: 32px;
    gap: 48px;
  }
  .hero-visual { flex: 0 0 auto; width: 100%; max-width: 480px; order: -1; padding: 32px 20px; }
  .hero-stats { max-width: 100%; }
  .hero-actions, .hero-stats { justify-content: center; }
  .hero-desc { margin-left: auto; margin-right: auto; }
  .hero-float-card.card-tl { top: 4px; left: 4px; }
  .hero-float-card.card-br { bottom: 4px; right: 4px; }

  .capabilities, .data-showcase-inner, .tech-arch, .cases-section, .cta-section {
    padding-left: 32px; padding-right: 32px;
  }

  .detail-container { grid-template-columns: 1fr; gap: 40px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .about-container { grid-template-columns: 1fr; gap: 40px; }
  .contact-container { grid-template-columns: 1fr; }

  /* 详情页响应式 */
  .dp-container { padding: 0 32px; }
  .dp-hero-inner { padding: 0 32px; }
  .dp-hero-body { grid-template-columns: 1fr; gap: 60px; }
  .dp-hero-visual { order: -1; }
  .dp-icon-stage { width: 280px; height: 280px; }
  .dp-icon-core { width: 90px; height: 90px; }
  .dp-overview-grid { grid-template-columns: 1fr; gap: 48px; }
  .dp-features-grid { grid-template-columns: repeat(2, 1fr); }
  .dp-cases-grid { grid-template-columns: repeat(2, 1fr); }
  .dp-related-grid { grid-template-columns: repeat(4, 1fr); }
  .dp-prod-item { grid-template-columns: 1fr; }
  .dp-prod-item.dp-prod-even { direction: ltr; }
  .dp-track-axis { display: none; }
  .dp-prod-dot-wrap { justify-content: flex-start; margin-bottom: 8px; }
  .dp-prod-item.dp-prod-even .dp-prod-card,
  .dp-prod-item:not(.dp-prod-even) .dp-prod-card { margin: 0; }
}

@media (max-width: 768px) {
  .nav-links, .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.open {
    display: flex; flex-direction: column;
    position: fixed;
    top: var(--nav-height); left: 0; right: 0;
    background: var(--bg-nav);
    border-bottom: 1px solid var(--border);
    padding: 16px; gap: 4px;
    backdrop-filter: blur(24px);
  }

  .nav-dropdown .dropdown-menu {
    position: static; transform: none;
    opacity: 1; visibility: visible;
    box-shadow: none; background: rgba(0,0,0,0.15);
    border: none; padding: 4px 0 4px 16px; display: none;
  }

  .capabilities-grid { grid-template-columns: 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(3, 1fr); }
  .features-grid { grid-template-columns: 1fr; }
  .values-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .footer-beian { flex-direction: column; align-items: center; gap: 8px; }
  .contact-form-wrap { padding: 24px; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .arch-layer { flex-direction: column; align-items: flex-start; }
  .layer-label { width: auto; }
  .ai-metrics { grid-template-columns: 1fr 1fr; }
  .hero-float-card { display: none; }

  /* 详情页 768 */
  .dp-features-grid { grid-template-columns: 1fr; }
  .dp-cases-grid { grid-template-columns: 1fr; }
  .dp-related-grid { grid-template-columns: repeat(3, 1fr); }
  .dp-hero-actions { flex-direction: column; }
  .dp-cta-actions { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
  .data-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-actions { flex-direction: column; align-items: center; }
  .cta-actions { flex-direction: column; align-items: center; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
}

/* ===== 自定义滚动条 ===== */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,212,255,0.25); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,212,255,0.45); }

/* ===== 选中文字 ===== */
::selection { background: rgba(0,212,255,0.25); color: white; }

/* ===== 主题切换过渡 ===== */
*, *::before, *::after {
  transition-property: background-color, border-color, color, box-shadow;
  transition-duration: 0.3s;
  transition-timing-function: ease;
}
/* 排除动画属性 */
.badge-dot, .scroll-dot, .cap-arrow, .cap-glow,
.feat-line, .case-card::before, .data-card::before,
.cap-card, .data-card, .case-card, .feature-card, .value-item, .related-card,
.orbit-node, .theme-track, .hero-float-card {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================
   AI科技感增强元素 v3.0
   ============================================================ */

/* ── Hero 扫描光束 ── */
.hero-scan-line {
  position: absolute;
  top: 0; left: -100%;
  width: 60%; height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(0,212,255,0.03) 40%,
    rgba(0,212,255,0.07) 50%,
    rgba(0,212,255,0.03) 60%,
    transparent 100%
  );
  animation: hero-scan 8s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}
@keyframes hero-scan {
  0%   { left: -60%; }
  50%  { left: 100%; }
  100% { left: -60%; }
}

/* ── Hero 角落装饰 ── */
.hero-corner {
  position: absolute;
  width: 56px; height: 56px;
  pointer-events: none;
  z-index: 0;
}
.hero-corner-tl {
  top: calc(var(--nav-height) + 20px);
  left: 60px;
  border-top: 1.5px solid var(--primary);
  border-left: 1.5px solid var(--primary);
  opacity: 0.3;
  border-radius: 4px 0 0 0;
}
.hero-corner-br {
  bottom: 60px; right: 60px;
  border-bottom: 1.5px solid var(--primary);
  border-right: 1.5px solid var(--primary);
  opacity: 0.3;
  border-radius: 0 0 4px 0;
}

/* ── 打字机行 ── */
.hero-typewriter {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  font-size: 13px;
  font-family: 'SF Mono', 'Consolas', monospace;
}
.tw-prefix {
  color: var(--text-muted);
  letter-spacing: 0.5px;
}
.tw-text {
  color: var(--primary);
  font-weight: 600;
  min-width: 2px;
}
.tw-cursor {
  color: var(--primary);
  animation: tw-blink 1s step-end infinite;
  font-weight: 300;
  font-size: 16px;
  line-height: 1;
}
@keyframes tw-blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

/* ── tech-board 扫光 ── */
.tb-scan {
  position: absolute;
  top: 0; left: -100%;
  width: 50%; height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0,212,255,0.04),
    transparent
  );
  animation: tb-scan 5s ease-in-out infinite;
  pointer-events: none;
  z-index: 2;
  border-radius: 24px;
}
@keyframes tb-scan {
  0%   { left: -50%; }
  100% { left: 110%; }
}

/* ── 浮动卡片升级 ── */
.hero-float-card {
  display: flex;
  align-items: center;
  gap: 10px;
}
.fc-icon {
  width: 34px; height: 34px;
  background: rgba(0,212,255,0.12);
  border: 1px solid rgba(0,212,255,0.25);
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  color: var(--primary);
  font-size: 13px;
  flex-shrink: 0;
}
.fc-body { display: flex; flex-direction: column; gap: 2px; }
.fc-pulse {
  position: absolute;
  top: 10px; right: 10px;
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  animation: pulse 2s infinite;
  box-shadow: 0 0 8px var(--primary);
}

/* ── AI数字流背景 ── */
.ai-number-stream {
  position: relative;
  height: 2px;
  overflow: hidden;
  background: transparent;
}
.ai-number-stream::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  animation: stream-line 3s ease-in-out infinite;
}
@keyframes stream-line {
  0%   { transform: translateX(-100%); opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { transform: translateX(100%); opacity: 0; }
}

/* ── capabilities 背景光斑 ── */
.section-glow {
  position: absolute;
  width: 500px; height: 500px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(100px);
}
.section-glow-l {
  top: 0; left: -150px;
  background: radial-gradient(circle, rgba(0,212,255,0.045) 0%, transparent 70%);
}
.section-glow-r {
  bottom: 0; right: -150px;
  background: radial-gradient(circle, rgba(123,47,247,0.05) 0%, transparent 70%);
}
[data-theme="light"] .section-glow-l {
  background: radial-gradient(circle, rgba(0,102,204,0.04) 0%, transparent 70%);
}
[data-theme="light"] .section-glow-r {
  background: radial-gradient(circle, rgba(91,31,212,0.04) 0%, transparent 70%);
}

/* ── cap-card 顶部光条 ── */
.cap-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: var(--grad-main);
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: 2;
}
.cap-card:hover::after { opacity: 1; }

/* ── section-header 装饰线 ── */
.section-header {
  position: relative;
}
.section-header::after {
  content: '';
  display: block;
  width: 48px; height: 2px;
  background: var(--grad-main);
  margin: 20px auto 0;
  border-radius: 2px;
  opacity: 0.6;
}

/* ── data-card 极光边框 ── */
.data-card {
  position: relative;
}
.data-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 18px;
  padding: 1px;
  background: var(--grad-main);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.data-card:hover::after { opacity: 0.5; }

/* ── arch-connector 脉冲连接线 ── */
.arch-connector {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 36px;
}
.arch-connector-line {
  position: absolute;
  left: 50%; top: 0; bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
  opacity: 0.2;
  transform: translateX(-50%);
}
.arch-connector-pulse {
  position: absolute;
  left: 50%;
  top: 0;
  width: 4px; height: 14px;
  background: var(--primary);
  border-radius: 2px;
  transform: translateX(-50%);
  box-shadow: 0 0 8px var(--primary);
  animation: pulse-down 2s ease-in-out infinite;
}
.arch-connector-arrow {
  position: relative;
  z-index: 1;
  color: var(--primary);
  font-size: 11px;
  opacity: 0.5;
  background: var(--bg-body);
  padding: 2px 6px;
  border-radius: 4px;
}
@keyframes pulse-down {
  0%   { top: 0%; opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* ── case-card 顶部彩条 ── */
.case-card-top-bar {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--grad-main);
  border-radius: 18px 18px 0 0;
  opacity: 0;
  transition: opacity 0.4s ease;
}
.case-card:hover .case-card-top-bar { opacity: 1; }

/* ── CTA 装饰环 ── */
.cta-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0,212,255,0.08);
  pointer-events: none;
  animation: ring-expand 6s ease-in-out infinite;
}
.cta-ring-1 {
  width: 320px; height: 320px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: 0s;
}
.cta-ring-2 {
  width: 520px; height: 520px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -2s;
}
.cta-ring-3 {
  width: 720px; height: 720px;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  animation-delay: -4s;
}
@keyframes ring-expand {
  0%, 100% { opacity: 0.4; transform: translate(-50%, -50%) scale(0.95); }
  50%       { opacity: 0.9; transform: translate(-50%, -50%) scale(1.05); }
}

/* ── arch-layer 左侧彩色指示条 ── */
.arch-layer {
  position: relative;
}
.arch-layer::before {
  content: '';
  position: absolute;
  left: 0; top: 8px; bottom: 8px;
  width: 2px;
  background: var(--grad-main);
  border-radius: 2px;
  opacity: 0.4;
  transition: opacity 0.3s;
}
.arch-layer:hover::before { opacity: 1; }

/* ── layer-label 升级 ── */
.layer-label {
  flex-shrink: 0;
  font-size: 11px;
  font-weight: 700;
  color: var(--primary);
  width: 64px;
  text-align: center;
  letter-spacing: 1px;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.15);
  border-radius: 6px;
  padding: 6px 4px;
  font-family: monospace;
}
[data-theme="light"] .layer-label {
  background: rgba(0,102,204,0.06);
  border-color: rgba(0,102,204,0.15);
}

/* ── section 之间的分隔光线 ── */
.capabilities::before,
.cases-section::before {
  content: '';
  display: block;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin-bottom: 0;
}

/* ── hero-stats 升级 ── */
.stat-item {
  position: relative;
  overflow: hidden;
}
.stat-item::after {
  content: '';
  position: absolute;
  top: 0; left: -100%; right: 0;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(0,212,255,0.04), transparent);
  animation: stat-shine 4s ease-in-out infinite;
}
@keyframes stat-shine {
  0%   { left: -100%; }
  50%  { left: 100%; }
  100% { left: 100%; }
}

/* ── data-card icon 升级 ── */
.data-icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: rgba(0,212,255,0.06);
  border: 1px solid rgba(0,212,255,0.12);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 14px;
  transition: var(--transition);
}
.data-card:hover .data-icon {
  background: rgba(0,212,255,0.12);
  border-color: rgba(0,212,255,0.3);
  box-shadow: 0 0 20px rgba(0,212,255,0.15);
}
[data-theme="light"] .data-icon {
  background: rgba(0,102,204,0.06);
  border-color: rgba(0,102,204,0.12);
}
[data-theme="light"] .data-card:hover .data-icon {
  background: rgba(0,102,204,0.12);
  border-color: rgba(0,102,204,0.3);
}

/* ── ai-metric-card 升级 ── */
.ai-metric-card {
  position: relative;
  overflow: hidden;
}
.ai-metric-card::before {
  content: '';
  position: absolute;
  top: -1px; left: 0; right: 0;
  height: 1px;
  background: var(--grad-main);
  opacity: 0.5;
}

/* ── cap-flow-item 左侧指示点 ── */
.cap-flow-item::before {
  display: none;
}
.cfi-icon {
  position: relative;
}
.cfi-icon::after {
  content: '';
  position: absolute;
  top: -2px; right: -2px;
  width: 6px; height: 6px;
  background: var(--primary);
  border-radius: 50%;
  box-shadow: 0 0 6px var(--primary);
  animation: pulse 3s infinite;
}

/* ── tech-band 升级：双轨道 ── */
.tech-band {
  position: relative;
}
.tech-band-track:first-child .tech-band-inner {
  animation-direction: normal;
}

/* ── hero-title 每行入场 ── */
.hero-title .line-block {
  display: block;
  animation: line-in 0.7s cubic-bezier(0.2, 0, 0, 1) backwards;
}
.hero-title .line-block:nth-child(1) { animation-delay: 0.1s; }
.hero-title .line-block:nth-child(2) { animation-delay: 0.25s; }
.hero-title .line-block:nth-child(3) { animation-delay: 0.4s; }
@keyframes line-in {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── hero-badge 入场 ── */
.hero-badge {
  animation: fade-up 0.6s ease backwards;
  animation-delay: 0s;
}
.hero-typewriter {
  animation: fade-up 0.6s ease backwards;
  animation-delay: 0.6s;
}
.hero-desc {
  animation: fade-up 0.6s ease backwards;
  animation-delay: 0.7s;
}
.hero-actions {
  animation: fade-up 0.6s ease backwards;
  animation-delay: 0.85s;
}
.hero-stats {
  animation: fade-up 0.6s ease backwards;
  animation-delay: 1s;
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── hero-visual 入场 ── */
.hero-visual {
  animation: fade-in-right 0.9s cubic-bezier(0.2, 0, 0, 1) 0.3s backwards;
}
@keyframes fade-in-right {
  from { opacity: 0; transform: translateX(40px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* 响应式：小屏隐藏装饰 */
@media (max-width: 768px) {
  .section-glow { display: none; }
  .hero-corner { display: none; }
  .cta-ring-3 { display: none; }
  .hero-scan-line { display: none; }
}