/* 导入 Google 科技与现代无衬线字体 */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* ==========================================================================
   1. 设计系统变量 (Design System Variables)
   ========================================================================== */
:root {
  /* 配色方案 (Color Palette - Premium Light Mode) */
  --bg-primary: #ffffff;
  --bg-secondary: #f4f7fc;         /* 淡雅科技蓝灰底 */
  --bg-tertiary: #eaf0fa;          /* 略深的浅蓝灰，用于激活/边框 */
  --border-color: rgba(0, 82, 255, 0.08); /* 融入主色调的轻量级蓝色边框 */
  
  --accent-primary: #0052ff;       /* 电光蓝 (高对比皇家蓝) */
  --accent-secondary: #0ea5e9;     /* 天空蓝 (比霓虹青更柔和协调) */
  --accent-purple: #6366f1;        /* 智控紫罗兰 (靛蓝色，更具现代感) */
  
  --accent-gradient: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
  --purple-gradient: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-primary) 100%);
  --dark-gradient: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  
  --text-primary: #0f172a;         /* 极客深蓝墨色 */
  --text-secondary: #334155;       /* 灰蓝色中间态 (适度调深以增强可读性) */
  --text-muted: #64748b;           /* 弱文本灰色 */
  
  /* 状态颜色 */
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* 玻璃拟态 (Glassmorphism - Premium Light) */
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-bg-hover: rgba(255, 255, 255, 0.9);
  --glass-border: rgba(0, 82, 255, 0.08);
  --glass-border-hover: rgba(0, 82, 255, 0.2);
  --glass-shadow: 0 20px 40px -15px rgba(0, 82, 255, 0.05);
  --glass-shadow-hover: 0 20px 50px -10px rgba(0, 82, 255, 0.12);
  
  /* 排版系统 */
  --font-primary: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-heading: 'Outfit', sans-serif;
  
  /* 过渡效果 */
  --transition-fast: all 0.2s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-bounce: all 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  
  /* 布局间距 */
  --container-max-width: 1200px;
}

/* ==========================================================================
   2. 样式重置与基础样式 (CSS Reset & Base)
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* 自定义滚动条 */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border: 2px solid var(--bg-primary);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--accent-primary);
}

/* 排版元素 */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

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

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font-family: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

ul, ol {
  list-style: none;
}

/* ==========================================================================
   3. 通用布局与组件样式
   ========================================================================== */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 8rem 0;
  position: relative;
}

/* 轮替背景色以增加空间层次感 */
.solutions, .hardware, .contact {
  background-color: var(--bg-secondary);
}
.hero, .app-preview, .about {
  background-color: var(--bg-primary);
}

/* 霓虹文字效果 */
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

/* 板块标题 */
.section-header {
  text-align: center;
  margin-bottom: 5rem;
}

.section-tag {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-secondary);
  display: inline-block;
  margin-bottom: 0.75rem;
  padding: 0.25rem 1rem;
  background: rgba(0, 82, 255, 0.06);
  border: 1px solid rgba(0, 82, 255, 0.12);
  border-radius: 100px;
}

.section-title {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.section-desc {
  color: var(--text-secondary);
  font-size: 1.15rem;
  max-width: 600px;
  margin: 0 auto;
}

/* 按钮设计系统 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 2rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 12px;
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent-gradient);
  color: #000000;
  box-shadow: 0 8px 30px rgba(0, 242, 254, 0.25);
  font-weight: 700;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(0, 242, 254, 0.4);
  color: #000000;
}

.btn-secondary {
  background: rgba(0, 82, 255, 0.04);
  border: 1px solid rgba(0, 82, 255, 0.08);
  color: var(--accent-primary);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(0, 82, 255, 0.08);
  border-color: rgba(0, 82, 255, 0.2);
  transform: translateY(-3px);
}

.btn-icon {
  font-size: 1.2rem;
}

/* 毛玻璃卡片样式 */
.glass-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: 24px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  transform: translateY(-8px);
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow-hover);
}

/* ==========================================================================
   4. 背景动态网格与光晕效果
   ========================================================================== */
.glowing-bg {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 82, 255, 0.15) 0%, rgba(0, 242, 254, 0) 70%);
  filter: blur(80px);
  pointer-events: none;
  z-index: -1;
}

/* ==========================================================================
   5. 核心过渡动画类
   ========================================================================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ==========================================================================
   6. Header / Navigation 样式
   ========================================================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.25rem 0;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition-smooth);
}

.header.scrolled {
  padding: 0.8rem 0;
  background: rgba(255, 255, 255, 0.85);
  box-shadow: 0 10px 30px rgba(0, 82, 255, 0.04);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
}

.logo-sub {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--accent-secondary);
  margin-top: -2px;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gradient);
  transition: var(--transition-smooth);
  border-radius: 100px;
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.hamburger-menu {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  z-index: 1001;
}

.hamburger-menu .bar {
  height: 2.5px;
  width: 100%;
  background-color: var(--text-primary);
  border-radius: 10px;
  transition: var(--transition-smooth);
}

/* ==========================================================================
   7. Hero Section 样式
   ========================================================================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 8rem;
  padding-bottom: 4rem;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 4rem;
}

.hero-tag {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  color: var(--accent-secondary);
  text-transform: uppercase;
  margin-bottom: 1.5rem;
  display: inline-block;
}

.hero-title {
  font-size: 3.8rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  max-width: 550px;
}

.hero-actions {
  display: flex;
  gap: 1.25rem;
  margin-bottom: 4rem;
}

.hero-stats {
  display: flex;
  gap: 3.5rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
}

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

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

/* --- 3D手机智控App展示区 --- */
.phone-showcase-container {
  width: 100%;
  max-width: 420px;
  height: 640px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 1rem;
}

/* 手机背部/底部的 3D 旋转科技发光平台 */
.glowing-platform-base {
  position: absolute;
  bottom: 0px;
  left: 50%;
  transform: translateX(-50%) rotateX(65deg);
  width: 460px;
  height: 460px;
  perspective: 1000px;
  transform-style: preserve-3d;
  z-index: 1;
  pointer-events: none;
}

.glow-line-ring {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  border: 1.5px solid rgba(0, 242, 254, 0.3);
  box-shadow: 0 0 15px rgba(0, 242, 254, 0.2), inset 0 0 15px rgba(0, 242, 254, 0.2);
  opacity: 0;
  animation: orbitPulse 5s infinite linear;
}

.ring-lg { width: 420px; height: 420px; animation-delay: 0s; }
.ring-md { width: 300px; height: 300px; animation-delay: 1.6s; }
.ring-sm { width: 180px; height: 180px; animation-delay: 3.2s; }

@keyframes orbitPulse {
  0% { transform: translate(-50%, -50%) scale(0.6); opacity: 0; }
  25% { opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(1.15); opacity: 0; }
}

/* 真实比例的智能手机外框 */
.hero-phone-mockup {
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --bg-secondary: #0f111a;
  --bg-tertiary: #171926;
  --border-color: rgba(255, 255, 255, 0.08);
  width: 290px;
  height: 590px;
  border-radius: 40px;
  background: #0b0c10;
  border: 8px solid #1f2235;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.3),
    inset 0 0 10px rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  z-index: 2;
  transform: translateY(-20px);
}

.phone-notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 110px;
  height: 18px;
  background: #1f2235;
  border-bottom-left-radius: 12px;
  border-bottom-right-radius: 12px;
  z-index: 10;
}

.phone-screen-content {
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, #171822 0%, #0a0b10 100%);
  padding: 24px 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

/* 顶层状态栏 */
.status-bar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.7);
  font-weight: 500;
  margin-bottom: 0.6rem;
  padding: 0 4px;
}

.status-right-icons {
  display: flex;
  align-items: center;
  gap: 5px;
}

.signal-kb {
  font-size: 0.55rem;
  opacity: 0.7;
}

.status-signal, .status-wifi {
  width: 10px;
  height: 10px;
  fill: currentColor;
}

.status-battery-text {
  font-size: 0.6rem;
  font-weight: 600;
}

/* App 标题区 */
.app-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
  padding: 0 4px;
}

.app-dropdown-car {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-primary);
  cursor: pointer;
}

.app-current-model {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.bluetooth-connection-widget {
  display: flex;
  align-items: center;
  gap: 5px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 3px 8px;
  border-radius: 100px;
  color: var(--accent-secondary);
}

.bluetooth-connection-widget svg {
  width: 10px;
  height: 10px;
}

.widget-divider {
  font-size: 8px;
  color: rgba(255, 255, 255, 0.25);
}

/* 电压显示 */
.app-voltage-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 0.4rem;
  padding: 0 4px;
}

.voltage-text-wrap {
  display: flex;
  align-items: baseline;
}

.voltage-val {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--text-primary);
  line-height: 1;
}

.voltage-unit {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-left: 2px;
}

.voltage-settings {
  font-size: 0.6rem;
  color: var(--text-muted);
  margin-left: 6px;
}

.voltage-bars {
  display: flex;
  gap: 3px;
  margin-top: 2px;
}

.v-bar {
  width: 12px;
  height: 3px;
  border-radius: 1px;
  background: rgba(255, 255, 255, 0.1);
}

.v-bar.active {
  background: var(--accent-secondary);
  box-shadow: 0 0 6px var(--accent-secondary);
}

/* 屏幕中央的汽车 */
.app-car-render-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 140px;
  position: relative;
}

.app-screen-car-img {
  max-width: 85%;
  height: auto;
  filter: drop-shadow(0 8px 15px rgba(0, 0, 0, 0.5));
  animation: floatCar 3.5s infinite ease-in-out;
  mix-blend-mode: screen;
}

@keyframes floatCar {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-4px); }
}

/* 车辆关机状态闪烁 */
.app-car-status-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.65rem;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.app-car-status-indicator .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--danger);
  box-shadow: 0 0 8px var(--danger);
  animation: blinkRed 1.5s infinite;
}

@keyframes blinkRed {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

/* 底部控制面板网格 */
.app-control-panel-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 20px;
  padding: 0.85rem;
  backdrop-filter: blur(10px);
}

.control-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.app-btn-round {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.app-btn-round svg {
  width: 32px;
  height: 32px;
  padding: 7px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  transition: var(--transition-smooth);
}

.app-btn-round:hover svg {
  background: var(--accent-gradient);
  color: #000000;
  box-shadow: 0 4px 12px rgba(0, 242, 254, 0.3);
}

.btn-arm svg {
  color: #ffffff;
  background: var(--danger);
  border-color: transparent;
}

.btn-arm:hover svg {
  background: #ff5e5e;
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.4);
}

/* 右滑开机滑动条 */
.app-slide-switch {
  flex: 1;
  margin: 0 10px;
  height: 32px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 100px;
  display: flex;
  align-items: center;
  padding: 2px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.slide-handle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--danger);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
  z-index: 2;
  animation: pulseRed 2s infinite;
}

.slide-text {
  position: absolute;
  width: 100%;
  text-align: center;
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-secondary);
  z-index: 1;
  padding-left: 12px;
}

.app-btn-square {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}

.btn-square-icon-wrap {
  width: 32px;
  height: 32px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.app-btn-square:hover .btn-square-icon-wrap {
  background: rgba(0, 242, 254, 0.15);
  color: var(--accent-secondary);
  border: 1px solid rgba(0, 242, 254, 0.2);
}

.app-btn-square.btn-inductive .btn-square-icon-wrap {
  background: rgba(0, 82, 255, 0.2);
  color: #00f2fe;
  border: 1px solid rgba(0, 242, 254, 0.3);
  box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.btn-text {
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* --- 溢出屏幕的三维车辆底座组合 --- */
.breakout-3d-car-platform {
  position: absolute;
  bottom: -40px;
  width: 100%;
  height: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 3;
  pointer-events: none;
}

.glow-light-ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(0, 82, 255, 0.6);
  box-shadow: 0 0 25px rgba(0, 82, 255, 0.35), inset 0 0 25px rgba(0, 82, 255, 0.35);
  transform: rotateX(72deg);
}

.ring-platform {
  width: 440px;
  height: 440px;
  bottom: -130px;
  animation: platformSpin 18s infinite linear;
}

.ring-platform-inner {
  width: 380px;
  height: 380px;
  bottom: -100px;
  opacity: 0.6;
  border-style: dashed;
  animation: platformSpin 24s infinite linear reverse;
}

@keyframes platformSpin {
  0% { transform: rotateX(72deg) rotate(0deg); }
  100% { transform: rotateX(72deg) rotate(360deg); }
}

.foreground-3d-car-wrap {
  position: absolute;
  bottom: -35px;
  width: 440px;
  height: auto;
  z-index: 4;
  animation: floatPlatformCar 4.5s infinite ease-in-out;
}

.foreground-3d-car {
  width: 100%;
  height: auto;
  display: block;
}

@keyframes floatPlatformCar {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-7px) scale(1.01); }
}

/* 车辆物理触地阴影与悬浮缩放动画 */
.car-shadow-ellipse {
  position: absolute;
  bottom: -15px;
  left: 50%;
  transform: translateX(-50%) rotateX(72deg);
  width: 280px;
  height: 50px;
  background: rgba(0, 50, 150, 0.12);
  filter: blur(15px);
  border-radius: 50%;
  z-index: 2;
  pointer-events: none;
  animation: shadowPulse 4.5s infinite ease-in-out;
}

@keyframes shadowPulse {
  0%, 100% { transform: translateX(-50%) rotateX(72deg) scale(1); opacity: 0.95; }
  50% { transform: translateX(-50%) rotateX(72deg) scale(0.88); opacity: 0.7; }
}

.app-car-shadow-ellipse {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%) rotateX(72deg);
  width: 130px;
  height: 25px;
  background: rgba(0, 0, 0, 0.85);
  filter: blur(8px);
  border-radius: 50%;
  z-index: 1;
  pointer-events: none;
  animation: appShadowPulse 3.5s infinite ease-in-out;
}

@keyframes appShadowPulse {
  0%, 100% { transform: translateX(-50%) rotateX(72deg) scale(1); opacity: 0.85; }
  50% { transform: translateX(-50%) rotateX(72deg) scale(0.9); opacity: 0.6; }
}

/* ==========================================================================
   8. Solutions (解决方案)
   ========================================================================== */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.solution-card {
  padding: 3rem;
  position: relative;
  overflow: hidden;
}

.solution-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(800px circle at var(--x, 0) var(--y, 0), rgba(0, 82, 255, 0.04), transparent 40%);
  z-index: 1;
  pointer-events: none;
}

.sol-icon-box {
  width: 60px;
  height: 60px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(0, 82, 255, 0.1) 0%, rgba(14, 165, 233, 0.04) 100%);
  border: 1px solid rgba(0, 82, 255, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  color: var(--accent-primary);
  transition: var(--transition-smooth);
}

.sol-icon {
  width: 28px;
  height: 28px;
}

.solution-card:hover .sol-icon-box {
  transform: scale(1.1) rotate(5deg);
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 8px 20px rgba(0, 82, 255, 0.25);
}

.sol-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.sol-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ==========================================================================
   9. App Interactive Preview (手机智控模拟器)
   ========================================================================== */
.app-interactive-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  align-items: center;
}

.app-controls {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.app-control-tab {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  text-align: left;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.tab-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  flex-shrink: 0;
}

.tab-info h4 {
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.tab-info p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
}

/* Tab 悬浮与激活 */
.app-control-tab:hover {
  background: var(--bg-tertiary);
  border-color: rgba(0, 82, 255, 0.15);
}

.app-control-tab.active {
  background: #ffffff;
  border-color: var(--accent-primary);
  box-shadow: 0 10px 30px -10px rgba(0, 82, 255, 0.08);
}

.app-control-tab.active .tab-icon-wrap {
  background: var(--accent-gradient);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(0, 82, 255, 0.2);
}

.app-control-tab.active .tab-info h4 {
  color: var(--accent-primary);
}

/* 下载组件样式 */
.app-download-badges {
  margin-top: 1rem;
}

.qr-container {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.25rem;
  max-width: 320px;
}

.qr-placeholder {
  width: 80px;
  height: 80px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  overflow: hidden;
}

.qr-content {
  width: 60px;
  height: 60px;
}

.qr-scan-line {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: var(--accent-secondary);
  box-shadow: 0 0 10px var(--accent-secondary);
  animation: scanQR 2.5s infinite ease-in-out;
}

.qr-corner {
  position: absolute;
  width: 8px;
  height: 8px;
  border: 2px solid var(--accent-secondary);
}
.qr-top-left { top: 4px; left: 4px; border-right: none; border-bottom: none; }
.qr-top-right { top: 4px; right: 4px; border-left: none; border-bottom: none; }
.qr-bottom-left { bottom: 4px; left: 4px; border-right: none; border-top: none; }
.qr-bottom-right { bottom: 4px; right: 4px; border-left: none; border-top: none; }

.qr-label {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* 手机 Mockup 外框布局 */
.app-mockup-wrap {
  display: flex;
  justify-content: center;
  perspective: 1000px;
}

.phone-frame {
  --text-primary: #ffffff;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --bg-secondary: #0f111a;
  --bg-tertiary: #171926;
  --border-color: rgba(255, 255, 255, 0.08);
  width: 300px;
  height: 610px;
  border-radius: 44px;
  background: #0f111a;
  border: 10px solid #1a1d2e;
  box-shadow: 
    0 25px 50px -12px rgba(0, 0, 0, 0.3),
    inset 0 0 4px 2px rgba(255, 255, 255, 0.08);
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.phone-notch {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 22px;
  background: #1a1d2e;
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
  z-index: 100;
}

.phone-home-indicator {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 110px;
  height: 4px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.25);
  z-index: 100;
}

.phone-screen {
  flex: 1;
  background: #080911;
  position: relative;
  padding: 30px 18px 24px; /* 顶部预留刘海高度 */
  overflow: hidden;
}

/* 屏幕切换效果 */
.screen-content {
  position: absolute;
  top: 30px;
  left: 18px;
  right: 18px;
  bottom: 24px;
  opacity: 0;
  pointer-events: none;
  transform: scale(0.95);
  transition: opacity 0.5s cubic-bezier(0.16, 1, 0.3, 1), transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.screen-content.active {
  opacity: 1;
  pointer-events: auto;
  transform: scale(1);
}

/* App 顶栏 */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.app-user-info {
  display: flex;
  flex-direction: column;
}

.user-welcome {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.scooter-name {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.bluetooth-status {
  font-size: 0.6rem;
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.05);
}

.bluetooth-status.active {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.screen-title-app {
  font-size: 0.95rem;
  font-weight: 700;
}

.status-badge {
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  border-radius: 100px;
  font-weight: 600;
}

.status-badge.green {
  background: rgba(16, 185, 129, 0.15);
  color: var(--success);
}

/* 屏幕 1: 一键锁车组件 */
.unlock-dial-area {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 160px;
  margin-top: 1.5rem;
}

.radial-ring {
  position: absolute;
  width: 140px;
  height: 140px;
  border: 2px dashed rgba(0, 242, 254, 0.2);
  border-radius: 50%;
  animation: rotateDial 20s infinite linear;
}

.lock-control-btn {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--bg-tertiary) 0%, var(--bg-secondary) 100%);
  border: 2px solid rgba(255, 255, 255, 0.05);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  z-index: 10;
  transition: var(--transition-smooth);
}

.lock-svg {
  width: 24px;
  height: 24px;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.lock-text {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-secondary);
}

/* 解锁与未解锁控制状态 */
.lock-control-btn.unlocked {
  border-color: var(--accent-secondary);
  box-shadow: 0 0 25px rgba(0, 242, 254, 0.3);
}

.lock-control-btn.unlocked .lock-svg {
  color: var(--accent-secondary);
}

.lock-control-btn.unlocked .lock-shackle {
  transform: translateY(-2px) rotate(-15deg);
  transform-origin: left bottom;
}

.lock-control-btn:active {
  transform: scale(0.95);
}

.car-diagram {
  margin: 1rem 0;
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0.8;
}

.scooter-svg-body {
  width: 140px;
  height: 85px;
}

.app-quick-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  padding: 0.75rem 0.5rem;
}

.quick-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.q-val {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
}

.q-lbl {
  font-size: 0.6rem;
  color: var(--text-muted);
}

/* 屏幕 2: 状态监控组件 */
.battery-section {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 1.5rem 0;
}

.battery-gauge {
  width: 140px;
  height: 140px;
  position: relative;
}

.gauge-ring {
  transform: rotate(-90deg);
}

.battery-progress-ring {
  transition: stroke-dashoffset 1s ease;
  filter: drop-shadow(0 0 6px var(--accent-secondary));
}

.gauge-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.gauge-percent {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
}

.gauge-lbl {
  font-size: 0.65rem;
  color: var(--text-muted);
}

.diagnosis-list {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.diag-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.65rem 0.85rem;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.diag-name {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.diag-status {
  font-size: 0.65rem;
  font-weight: 600;
}

.diag-status.ok {
  color: var(--success);
}

/* 屏幕 3: 定位防盗寻车组件 */
.gps-status {
  font-size: 0.6rem;
  color: var(--accent-secondary);
  background: rgba(0, 242, 254, 0.08);
  padding: 0.15rem 0.5rem;
  border-radius: 100px;
}

.map-view-placeholder {
  height: 220px;
  background: #0b0d16;
  border-radius: 16px;
  margin: 1rem 0;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.virtual-map {
  width: 100%;
  height: 100%;
  opacity: 0.7;
}

/* 地图上的波纹呼吸圈与声波 */
.pulse-ring {
  transform-origin: 50px 100px;
  animation: mapPulse 2s infinite ease-out;
}
.sound-wave-circle {
  transform-origin: 50px 100px;
  opacity: 0;
}
.sound-wave-circle.trigger {
  animation: beepWave 0.8s ease-out;
}

.map-overlay-card {
  position: absolute;
  bottom: 10px;
  left: 10px;
  right: 10px;
  background: rgba(15, 17, 26, 0.9);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
}

.map-overlay-card h5 {
  font-size: 0.7rem;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.map-overlay-card p {
  font-size: 0.6rem;
  color: var(--text-muted);
}

.find-actions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.find-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  padding: 0.65rem 0;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 10px;
  font-size: 0.7rem;
  font-weight: 600;
  transition: var(--transition-smooth);
}

.find-btn:hover {
  background: rgba(0, 242, 254, 0.08);
  border-color: var(--accent-secondary);
}

.find-btn:active {
  transform: scale(0.95);
}

.action-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
}

.action-icon svg {
  width: 100%;
  height: 100%;
}

.find-btn:hover .action-icon {
  color: var(--accent-secondary);
  filter: drop-shadow(0 0 4px rgba(0, 242, 254, 0.6));
}

/* 屏幕 4: 钥匙共享组件 */
.add-auth-btn {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 0.85rem;
}

.active-keys-section h6 {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.6rem;
}

.keys-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  height: 190px;
  overflow-y: auto;
}

.key-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.5rem;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
}

.key-avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: bold;
  color: #000000;
}

.key-detail {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.k-name {
  font-size: 0.7rem;
  font-weight: 600;
}

.k-limit {
  font-size: 0.55rem;
  color: var(--text-muted);
}

.key-status {
  font-size: 0.55rem;
  padding: 0.1rem 0.4rem;
  border-radius: 100px;
  font-weight: bold;
}

.key-status.active {
  background: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.key-status.revoked {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.key-item.expired {
  opacity: 0.5;
}

.share-actions {
  margin-top: 1rem;
}

.share-key-big-btn {
  width: 100%;
  padding: 0.75rem 0;
  border-radius: 10px;
  background: var(--accent-gradient);
  color: #000000;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 5px 15px rgba(0, 242, 254, 0.2);
}

/* ==========================================================================
   10. Hardware Section (芯片模块)
   ========================================================================== */
.hardware-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 5rem;
  align-items: center;
}

.hardware-specs-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.spec-card {
  padding: 2.25rem;
}

.spec-title-wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.spec-num {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-secondary);
  opacity: 0.6;
}

.spec-card h3 {
  font-size: 1.3rem;
}

.spec-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.hardware-visual-card {
  padding: 3.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2.5rem;
}

.chip-graphic-wrap {
  position: relative;
  width: 200px;
  height: 200px;
}

.ble-chip-svg {
  filter: drop-shadow(0 10px 25px rgba(0, 0, 0, 0.6));
}

.chip-waves {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.c-wave {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border: 1px solid rgba(0, 242, 254, 0.3);
  border-radius: 50%;
  opacity: 0;
}

.c-wave.w1 {
  width: 220px;
  height: 220px;
  animation: rippleChip 3s infinite ease-out;
}

.c-wave.w2 {
  width: 220px;
  height: 220px;
  animation: rippleChip 3s infinite ease-out 1.5s;
}

.hardware-features-inline {
  display: flex;
  gap: 3rem;
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  width: 100%;
  justify-content: center;
}

.h-feature {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.h-feature strong {
  font-size: 0.95rem;
  color: var(--text-primary);
}

.h-feature span {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   11. About Us Section (关于我们)
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  gap: 5rem;
  align-items: center;
}

.about-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

/* --- 关于我们高品质企业图集叠放墙 --- */
.about-image-collage {
  position: relative;
  width: 100%;
  max-width: 440px;
  height: 400px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.collage-glow-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(0, 242, 254, 0.12) 0%, transparent 60%);
  filter: blur(15px);
  z-index: 1;
  pointer-events: none;
}

.collage-img-card {
  position: absolute;
  border-radius: 20px;
  border: 2px solid var(--border-color);
  box-shadow: 
    0 20px 40px rgba(0, 82, 255, 0.05),
    inset 0 0 10px rgba(255, 255, 255, 0.2);
  overflow: hidden;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s ease;
  background: var(--bg-secondary);
}

.collage-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.6s ease;
}

.card-label {
  position: absolute;
  bottom: 12px;
  left: 16px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.7rem;
  font-weight: 600;
  color: #ffffff;
}

/* 研发中心大图 */
.card-rd {
  width: 320px;
  height: 220px;
  top: 10px;
  left: 0;
  transform: rotate(-3deg);
  z-index: 2;
}

/* 贴片车间大图 */
.card-factory {
  width: 290px;
  height: 200px;
  bottom: 10px;
  right: 0;
  transform: rotate(3deg);
  z-index: 3;
}

/* 浮动玻璃态勋章 */
.collage-glass-badge {
  position: absolute;
  bottom: 80px;
  left: 20px;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0, 82, 255, 0.1);
  border-radius: 16px;
  padding: 10px 16px;
  box-shadow: 
    0 15px 30px rgba(0, 82, 255, 0.06),
    inset 0 0 8px rgba(255, 255, 255, 0.5);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 12px;
  animation: floatCollageBadge 4s infinite ease-in-out;
}

.badge-icon-box {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--accent-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000000;
}

.badge-icon-box svg {
  width: 18px;
  height: 18px;
}

.badge-info h5 {
  font-size: 0.8rem;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.badge-info p {
  font-size: 0.65rem;
  color: var(--text-muted);
}

@keyframes floatCollageBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* 悬停互动：卡片自动回正、深浅浮动与图片微放大 */
.about-image-collage:hover .card-rd {
  transform: rotate(-1deg) translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7);
  z-index: 3;
}

.about-image-collage:hover .card-factory {
  transform: rotate(1deg) translateY(-5px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.7);
  z-index: 2;
}

.about-image-collage:hover .collage-img {
  transform: scale(1.04);
}

.about-text-lead {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.about-text-body {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
}

.values-row {
  display: flex;
  gap: 2rem;
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  margin-top: 2rem;
}

.value-item h5 {
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  color: var(--accent-secondary);
}

.value-item p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ==========================================================================
   12. Contact Us Section (联系我们)
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 4rem;
}

.info-card {
  padding: 3rem;
  height: 100%;
}

.info-card h3 {
  font-size: 1.6rem;
  margin-bottom: 1.25rem;
}

.info-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 3rem;
}

.info-items {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.info-item-row {
  display: flex;
  gap: 1.25rem;
}

.info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  color: var(--accent-secondary);
  flex-shrink: 0;
  margin-top: 2px;
}

.info-icon svg {
  width: 100%;
  height: 100%;
}

.info-details {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.info-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.info-val {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.info-val:hover {
  color: var(--accent-secondary);
}

.contact-form {
  padding: 3rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input, .form-group textarea {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.85rem 1.2rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: var(--transition-fast);
}

.form-group input:focus, .form-group textarea:focus {
  background: var(--bg-primary);
  border-color: var(--accent-primary);
  box-shadow: 0 0 15px rgba(0, 82, 255, 0.08);
}

.form-feedback-msg {
  font-size: 0.85rem;
  font-weight: 600;
  min-height: 20px;
}
.form-feedback-msg.success { color: var(--success); }
.form-feedback-msg.error { color: var(--danger); }

.btn-submit-form {
  width: 100%;
}

/* ==========================================================================
   13. Footer Section
   ========================================================================== */
.footer {
  background: #0b0f19;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 5rem 0 2rem;
  color: #94a3b8;
}

.footer .logo-text {
  color: #ffffff;
}

.footer .logo-sub {
  color: #38bdf8;
}

.footer .logo-icon {
  background: rgba(255, 255, 255, 0.95);
  padding: 4px;
  border-radius: 8px;
  box-shadow: 0 0 12px rgba(56, 189, 248, 0.25);
}

.footer-container {
  display: flex;
  justify-content: space-between;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-brand {
  max-width: 280px;
}

.footer-about-text {
  color: #64748b;
  font-size: 0.85rem;
  margin-top: 1rem;
}

.footer-links-group {
  display: flex;
  gap: 5rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  color: #ffffff;
  margin-bottom: 1.5rem;
  font-weight: 600;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-col a {
  font-size: 0.85rem;
  color: #94a3b8;
}

.footer-col a:hover {
  color: #38bdf8;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  font-size: 0.8rem;
  color: #64748b;
}

.footer-legal {
  display: flex;
  gap: 2rem;
}

.footer-legal a:hover {
  color: #ffffff;
}

/* ==========================================================================
   14. 核心关键帧动画 (Keyframe Animations)
   ========================================================================== */
@keyframes pulseGlow {
  0% { transform: translate(-50%, -50%) scale(0.9); opacity: 0.5; }
  100% { transform: translate(-50%, -50%) scale(1.1); opacity: 0.9; }
}

@keyframes scanQR {
  0% { top: 0%; }
  50% { top: 100%; }
  100% { top: 0%; }
}

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

@keyframes rippleChip {
  0% { width: 200px; height: 200px; opacity: 0.8; }
  100% { width: 340px; height: 340px; opacity: 0; }
}

@keyframes mapPulse {
  0% { r: 6; opacity: 0.8; }
  100% { r: 24; opacity: 0; }
}

@keyframes beepWave {
  0% { r: 6; opacity: 1; stroke-width: 2; }
  100% { r: 75; opacity: 0; stroke-width: 0.5; }
}

/* ==========================================================================
   15. 极致移动端自适应 (Responsive Adjustments)
   ========================================================================== */
@media (max-width: 1024px) {
  .hero-container, .solutions-grid, .app-interactive-container, .hardware-container, .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .hero-visual, .app-mockup-wrap, .about-visual {
    order: -1; /* 将图表移至移动端顶部 */
  }
  .hero {
    min-height: auto;
    padding-top: 7rem;
  }
  .hero-title {
    font-size: 3rem;
  }
  .footer-container {
    flex-direction: column;
    gap: 3rem;
  }
}

@media (max-width: 768px) {
  .header-actions .btn {
    display: none; /* 在极窄屏隐藏导航栏按钮 */
  }
  .hamburger-menu {
    display: flex;
  }
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(15, 17, 26, 0.98);
    border-left: 1px solid var(--border-color);
    padding: 6rem 2.5rem;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.8);
    transition: var(--transition-smooth);
    z-index: 1000;
  }
  .nav.open {
    right: 0;
  }
  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }
  .nav-link {
    font-size: 1.15rem;
  }
  .hamburger-menu.open .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger-menu.open .bar:nth-child(2) {
    opacity: 0;
  }
  .hamburger-menu.open .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
  .footer-legal {
    justify-content: center;
  }
}