/* ============================================
   NōKON 企业官网样式表
   主色调：医疗健康浅蓝+白色 | 安全舒适、干净柔和
   ============================================ */

/* CSS 变量定义 */
:root {
  /* 主色调 - 医疗健康浅蓝色系 */
  --primary-900: #1e3a5f;
  --primary-800: #2a4d73;
  --primary-700: #366089;
  --primary-600: #4a7fa8;
  --primary-500: #5a93bf;
  --primary-400: #7eb3d4;
  --primary-300: #a8cde5;
  --primary-200: #c8e0ed;
  --primary-100: #e4f1f8;
  --primary-50: #f0f7fb;

  /* 辅助色 - 柔和蓝灰 */
  --secondary-900: #2c3e50;
  --secondary-800: #34495e;
  --secondary-700: #4a6572;
  --secondary-600: #5d7a8a;
  --secondary-500: #7a9aa8;
  --secondary-400: #9bb8c6;
  --secondary-300: #b8d1db;
  --secondary-200: #d4e5ec;
  --secondary-100: #eaf3f6;
  --secondary-50: #f5fafc;

  /* 强调色 - 柔和蓝绿（信任与健康） */
  --accent-900: #1a5f5f;
  --accent-800: #247272;
  --accent-700: #2e8888;
  --accent-600: #3da3a3;
  --accent-500: #52bfbf;
  --accent-400: #7dd4d4;
  --accent-300: #a8e5e5;
  --accent-200: #c9f0f0;
  --accent-100: #e5f7f7;

  /* 中性色阶梯（12级） */
  --neutral-50: #f8fbfc;
  --neutral-100: #f0f5f7;
  --neutral-200: #e1eaef;
  --neutral-300: #c5d6de;
  --neutral-400: #9db5c3;
  --neutral-500: #7a96a6;
  --neutral-600: #5a7a8a;
  --neutral-700: #455d6d;
  --neutral-800: #334450;
  --neutral-900: #252e38;
  --neutral-950: #1a2128;
  --neutral-1000: #0f151a;

  /* 功能色 */
  --success: #5a9e6f;
  --warning: #d4a84b;
  --error: #c76b6b;
  --info: #5a8fb8;

  /* 渐变色 */
  --gradient-primary: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-400) 100%);
  --gradient-secondary: linear-gradient(135deg, var(--primary-700) 0%, var(--secondary-600) 100%);
  --gradient-hero: linear-gradient(
    180deg,
    #e8f4f8 0%,
    #d4eaf3 20%,
    #c8e3ef 35%,
    #dceef7 50%,
    #e8f4f8 65%,
    #f0f7fb 80%,
    #ffffff 100%
  );
  --gradient-card: linear-gradient(135deg, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0.9) 100%);

  /* 字体 */
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-serif: 'Noto Serif SC', Georgia, serif;

  /* 字号 */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;

  /* 间距 */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;

  /* 圆角 */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.15);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.2);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.35);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 60px rgba(184, 69, 69, 0.3);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--neutral-700);
  background: radial-gradient(
    ellipse 100% 60% at 50% 0%,
    rgba(200, 224, 237, 0.4) 0%,
    rgba(240, 247, 251, 0.2) 40%,
    #ffffff 100%
  );
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   容器
   ============================================ */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: sticky;
  top: 0;
  width: 100%;
  height: 70px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
  box-shadow: 0 1px 3px rgba(30, 58, 95, 0.08);
  z-index: var(--z-fixed);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  height: 60px;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 8px rgba(30, 58, 95, 0.12);
}

.navbar-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  text-decoration: none;
  transition: transform var(--transition-base);
}

.navbar-brand:hover {
  transform: scale(1.02);
}

.brand-text {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-700);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  letter-spacing: 0.05em;
}

.navbar-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.navbar-link {
  position: relative;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--neutral-600);
  text-decoration: none;
  padding: var(--spacing-sm) 0;
  transition: color var(--transition-base);
}

.navbar-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-base);
}

.navbar-link:hover,
.navbar-link.active {
  color: var(--primary-600);
}

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

.navbar-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--primary-700);
  transition: all var(--transition-base);
}

/* ============================================
   品牌沉浸式 KV 首屏
   ============================================ */
.hero-section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* 主渐变背景 - 柔和冰蓝上下弥散渐变 */
.hero-gradient {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    ellipse 100% 80% at 50% 0%,
    rgba(200, 224, 237, 0.6) 0%,
    rgba(168, 205, 229, 0.3) 30%,
    rgba(232, 244, 250, 0.15) 60%,
    rgba(255, 255, 255, 0.8) 100%
  );
}

/* 网格纹理 - 极淡朦胧肌理 */
.hero-mesh {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(rgba(90, 147, 191, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 147, 191, 0.015) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.8;
}

/* 中心光晕效果 - 极淡柔焦 */
.hero-glow {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 1200px;
  height: 1200px;
  background: radial-gradient(
    ellipse at center,
    rgba(90, 147, 191, 0.08) 0%,
    rgba(126, 179, 212, 0.05) 25%,
    rgba(200, 224, 237, 0.03) 45%,
    transparent 65%
  );
}

/* 光束效果 - 淡蓝调 */
.hero-light-beam {
  display: none;
}

/* 粒子层 */
.hero-particles {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

/* 装饰线条 */
.hero-lines {
  display: none;
}

/* 边缘暗角 - 去除 */
.hero-vignette {
  display: none;
}

/* 内容区域 */
.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: var(--spacing-3xl);
  max-width: 1000px;
  animation: fadeInUp 1.2s ease-out;
}

/* 品牌标识：商标图居中 */
.hero-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
  animation: fadeInUp 1s ease-out;
}

.brand-logo {
  max-width: 200px;
  height: auto;
  filter: drop-shadow(0 4px 15px rgba(30, 58, 95, 0.12));
}

/* 分割线 */
.hero-divider {
  width: 120px;
  height: 1px;
  margin: var(--spacing-xl) auto var(--spacing-2xl);
  background: linear-gradient(
    90deg,
    transparent,
    rgba(90, 147, 191, 0.5),
    transparent
  );
  position: relative;
  animation: fadeInUp 1.2s ease-out 0.2s both;
}

.hero-divider::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 8px;
  height: 8px;
  background: var(--primary-500);
  border-radius: 50%;
  box-shadow: 0 0 15px rgba(90, 147, 191, 0.6);
}

/* 主标语 */
.hero-slogan {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  font-weight: 400;
  color: var(--primary-800);
  margin-bottom: var(--spacing-lg);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  letter-spacing: 0.15em;
  animation: fadeInUp 1.2s ease-out 0.3s both;
}

/* 描述文字 */
.hero-description {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--neutral-600);
  margin-bottom: var(--spacing-3xl);
  font-weight: 400;
  letter-spacing: 0.05em;
  line-height: 1.8;
  animation: fadeInUp 1.2s ease-out 0.5s both;
}

/* 功能特性区 */
.hero-features {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2xl);
  animation: fadeInUp 1.2s ease-out 0.7s both;
}

.feature-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(90, 147, 191, 0.15);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  min-width: 140px;
  box-shadow: 0 2px 12px rgba(90, 147, 191, 0.08);
}

.feature-item:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(90, 147, 191, 0.3);
  transform: translateY(-5px);
  box-shadow: 0 8px 24px rgba(90, 147, 191, 0.12);
}

.feature-icon {
  width: 40px;
  height: 40px;
  color: var(--primary-500);
}

.feature-icon svg {
  width: 100%;
  height: 100%;
  stroke-width: 1.5;
}

.feature-item span {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--primary-700);
  letter-spacing: 0.08em;
}

.feature-divider {
  width: 1px;
  height: 40px;
  background: linear-gradient(
    to bottom,
    transparent,
    rgba(90, 147, 191, 0.3),
    transparent
  );
}

/* 响应式调整 */
@media (max-width: 768px) {
  .hero-brand {
    flex-wrap: wrap;
    gap: var(--spacing-md);
  }
  
  .brand-symbol {
    width: 50px;
    height: 50px;
  }
  
  .brand-name {
    font-size: 1.75rem;
  }
  
  .brand-name-en {
    font-size: 1rem;
  }
  
  .hero-features {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .feature-divider {
    width: 60px;
    height: 1px;
    background: linear-gradient(
      to right,
      transparent,
      rgba(90, 147, 191, 0.4),
      transparent
    );
  }
}

/* ============================================
   通用区域样式
   ============================================ */
section {
  padding: var(--spacing-5xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-title {
  font-size: var(--text-4xl);
  font-weight: 600;
  color: var(--primary-900);
  margin-bottom: var(--spacing-xl);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  letter-spacing: 0.12em;
  line-height: 1.3;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--neutral-500);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   关于诺康
   ============================================ */
.about-section {
  background: linear-gradient(180deg, #ffffff 0%, var(--primary-50) 100%);
}

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
}

.about-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 4px 20px rgba(30, 58, 95, 0.06);
  border: 1px solid rgba(90, 147, 191, 0.08);
  text-align: center;
  transition: all var(--transition-base);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.about-card:hover {
  transform: translateY(-8px) rotateX(2deg);
  box-shadow: 0 12px 40px rgba(30, 58, 95, 0.1);
  background: rgba(255, 255, 255, 0.85);
  border-color: rgba(90, 147, 191, 0.15);
}

.about-icon {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
  box-shadow: 0 4px 15px rgba(30, 58, 95, 0.15);
}

.about-icon svg {
  width: 40px;
  height: 40px;
  stroke-width: 1.5;
}

.about-card-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-md);
}

.about-card-text {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: 1.8;
}

/* ============================================
   品牌理念
   ============================================ */
.philosophy-section {
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    var(--primary-50) 50%,
    #ffffff 100%
  );
  color: var(--neutral-700);
}

.philosophy-section .section-title {
  color: var(--primary-800);
}

.philosophy-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.philosophy-text {
  padding-right: var(--spacing-2xl);
}

.philosophy-main {
  margin-top: var(--spacing-2xl);
}

.philosophy-quote {
  font-size: var(--text-4xl);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  font-weight: 600;
  color: var(--primary-600);
  margin-bottom: var(--spacing-lg);
  line-height: 1.4;
}

.philosophy-description {
  font-size: var(--text-lg);
  color: var(--neutral-600);
  line-height: 2;
}

.philosophy-values {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.value-item {
  padding: var(--spacing-xl);
  background: white;
  border-radius: var(--radius-lg);
  border-left: 4px solid var(--primary-400);
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.value-item:hover {
  background: var(--primary-50);
  transform: translateX(8px);
}

.value-number {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary-500);
  margin-bottom: var(--spacing-sm);
}

.value-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-xs);
}

.value-text {
  font-size: var(--text-sm);
  color: var(--neutral-600);
}

/* ============================================
   技术路线
   ============================================ */
.technology-section {
  background: linear-gradient(180deg, #ffffff 0%, var(--primary-50) 50%, #ffffff 100%);
}

.tech-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-4xl);
}

.tech-card {
  background: white;
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.tech-card:hover {
  transform: translateY(-8px) rotateY(2deg);
  box-shadow: var(--shadow-2xl);
}

.tech-card-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}

.tech-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  background: var(--gradient-primary);
  color: white;
  flex-shrink: 0;
}

.tech-icon svg {
  width: 32px;
  height: 32px;
}

.tech-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-xs);
}

.tech-subtitle {
  font-size: var(--text-sm);
  color: var(--neutral-400);
  font-style: italic;
}

.tech-description {
  font-size: var(--text-base);
  color: var(--neutral-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.tech-features {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.tech-features li {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) 0;
  font-size: var(--text-sm);
  color: var(--neutral-700);
}

.check-icon {
  color: var(--secondary-500);
  font-weight: 700;
}

.tech-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--neutral-200);
}

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

.metric-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary-700);
  margin-bottom: var(--spacing-xs);
}

.metric-label {
  font-size: var(--text-xs);
  color: var(--neutral-500);
}

/* 技术历程 */
.tech-roadmap {
  background: white;
  padding: var(--spacing-3xl);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.roadmap-title {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-2xl);
  text-align: center;
}

.roadmap-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
  position: relative;
}

.roadmap-timeline::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  right: 10%;
  height: 2px;
  background: var(--neutral-200);
}

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

.timeline-year {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: var(--gradient-primary);
  color: white;
  font-size: var(--text-lg);
  font-weight: 700;
  position: relative;
  z-index: 1;
  transition: all var(--transition-base);
}

.timeline-item.active .timeline-year {
  background: var(--secondary-500);
  transform: scale(1.1);
  box-shadow: 0 0 20px rgba(59, 184, 96, 0.4);
}

.timeline-content h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-700);
  margin-bottom: var(--spacing-sm);
}

.timeline-content p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: 1.6;
}

/* ============================================
   产品中心
   ============================================ */
.products-section {
  background: linear-gradient(180deg, #ffffff 0%, var(--primary-50) 100%);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-4xl);
}

.product-card {
  position: relative;
  background: var(--neutral-50);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  transform-style: preserve-3d;
  perspective: 1000px;
}

.product-card:hover {
  transform: translateY(-12px) rotateX(3deg);
  box-shadow: var(--shadow-2xl);
}

.product-badge {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--secondary-500);
  color: white;
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  z-index: 1;
}

.product-image {
  width: 100%;
  height: 200px;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
}

.placeholder-cn {
  font-size: 2.5rem;
  font-weight: 600;
  color: white;
  letter-spacing: 0.15em;
}

.placeholder-en {
  font-size: var(--text-sm);
  font-weight: 400;
  color: rgba(255, 255, 255, 0.8);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.product-content {
  padding: var(--spacing-xl);
}

.product-category {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: var(--primary-100);
  color: var(--primary-700);
  font-size: var(--text-xs);
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.product-name {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-xs);
  text-align: center;
}

.product-name-en {
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--primary-500);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: var(--spacing-md);
}

.product-description {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.product-highlights {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.product-highlights li {
  position: relative;
  padding-left: var(--spacing-lg);
  font-size: var(--text-sm);
  color: var(--neutral-700);
  margin-bottom: var(--spacing-xs);
}

.product-highlights li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--secondary-500);
  font-weight: 700;
}

.product-tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.tech-tag {
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--primary-50);
  color: var(--primary-600);
  font-size: var(--text-xs);
  border-radius: var(--radius-sm);
}

/* 新品资讯 */
.news-section {
  background: var(--primary-50);
  padding: var(--spacing-2xl);
  border-radius: var(--radius-xl);
}

.news-section-title {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-xl);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.news-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: white;
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.news-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateX(8px);
}

.news-date {
  flex-shrink: 0;
  width: 80px;
  text-align: center;
  padding: var(--spacing-md);
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
}

.news-content h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-xs);
}

.news-content p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
}

/* ============================================
   联系我们
   ============================================ */
.contact-section {
  background: linear-gradient(180deg, var(--primary-50) 0%, #ffffff 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.contact-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.contact-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-primary);
  color: white;
  border-radius: var(--radius-lg);
  flex-shrink: 0;
}

.contact-icon svg {
  width: 24px;
  height: 24px;
}

.contact-info h4 {
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-xs);
}

.contact-info p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
}

.qrcode-placeholder {
  width: 120px;
  height: 120px;
  background: var(--primary-50);
  border: 2px dashed var(--primary-300);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  color: var(--primary-500);
  text-align: center;
  padding: var(--spacing-sm);
}

.qrcode-image {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(30, 58, 95, 0.1);
}

.qrcode-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.contact-email {
  font-size: var(--text-sm);
  color: var(--primary-600);
  font-weight: 500;
  word-break: break-all;
}

.contact-info p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
}

/* ============================================
   页脚
   ============================================ */
.footer {
  background: linear-gradient(
    180deg,
    #ffffff 0%,
    var(--primary-50) 100%
  );
  color: var(--neutral-600);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
  border-top: 1px solid rgba(90, 147, 191, 0.1);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid rgba(90, 147, 191, 0.1);
  margin-bottom: var(--spacing-xl);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.footer-logo-icon {
  width: 40px;
  height: 40px;
  color: var(--primary-600);
}

.footer-logo-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-logo-text .logo-chinese {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary-700);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  letter-spacing: 0.1em;
}

.footer-logo-text .logo-english {
  font-size: var(--text-xs);
  color: var(--primary-400);
  letter-spacing: 0.2em;
}

.footer-logo .logo-slogan {
  font-size: var(--text-sm);
  color: var(--neutral-500);
  margin-left: var(--spacing-md);
  padding-left: var(--spacing-md);
  border-left: 1px solid rgba(90, 147, 191, 0.2);
}

.footer-links {
  display: flex;
  gap: var(--spacing-2xl);
}

.footer-links a {
  color: var(--neutral-500);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--transition-base);
}

.footer-links a:hover {
  color: var(--primary-600);
}

.footer-bottom {
  text-align: center;
}

.copyright {
  font-size: var(--text-sm);
  color: var(--neutral-500);
  margin-bottom: var(--spacing-xs);
}

.icp-info {
  font-size: var(--text-xs);
  color: var(--neutral-400);
}

.icp-info a {
  color: var(--neutral-400);
  text-decoration: none;
  transition: color var(--transition-base);
}

.icp-info a:hover {
  color: var(--primary-500);
}

/* ============================================
   动画类
   ============================================ */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.animate-on-scroll.animated {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画 */
[data-delay="100"] { transition-delay: 0.1s; }
[data-delay="200"] { transition-delay: 0.2s; }
[data-delay="300"] { transition-delay: 0.3s; }
[data-delay="400"] { transition-delay: 0.4s; }
[data-delay="500"] { transition-delay: 0.5s; }

/* ============================================
   后台管理面板
   ============================================ */
.admin-panel {
  position: fixed;
  bottom: var(--spacing-xl);
  right: var(--spacing-xl);
  z-index: var(--z-modal);
}

.admin-toggle {
  width: 56px;
  height: 56px;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.admin-toggle:hover {
  transform: scale(1.1);
  box-shadow: var(--shadow-xl);
}

.admin-toggle svg {
  width: 24px;
  height: 24px;
  color: white;
}

.admin-content {
  position: absolute;
  bottom: 70px;
  right: 0;
  width: 300px;
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: none;
}

.admin-panel.open .admin-content {
  display: block;
}

.admin-content h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary-800);
  margin-bottom: var(--spacing-md);
}

.admin-content p {
  font-size: var(--text-sm);
  color: var(--neutral-600);
  margin-bottom: var(--spacing-lg);
}

.admin-btn {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--primary-700);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-base);
}

.admin-btn:hover {
  background: var(--primary-600);
}

/* 内容编辑器 */
.content-editor {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal);
}

.editor-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.editor-modal {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 90%;
  max-width: 800px;
  max-height: 90vh;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-2xl);
  overflow: hidden;
}

.editor-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xl);
  border-bottom: 1px solid var(--neutral-200);
}

.editor-header h3 {
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--primary-800);
}

.editor-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  font-size: var(--text-2xl);
  color: var(--neutral-500);
  cursor: pointer;
  transition: color var(--transition-base);
}

.editor-close:hover {
  color: var(--neutral-800);
}

.editor-body {
  padding: var(--spacing-xl);
  max-height: 60vh;
  overflow-y: auto;
}

.editor-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.tab-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--neutral-100);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--neutral-600);
  cursor: pointer;
  transition: all var(--transition-base);
}

.tab-btn:hover {
  background: var(--primary-100);
  color: var(--primary-700);
}

.tab-btn.active {
  background: var(--primary-700);
  color: white;
}

.editor-footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  padding: var(--spacing-xl);
  border-top: 1px solid var(--neutral-200);
}

/* ============================================
   响应式设计
   ============================================ */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .tech-cards {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 768px) {
  :root {
    --text-5xl: 2.25rem;
    --text-4xl: 1.875rem;
    --text-3xl: 1.5rem;
  }

  .navbar-menu {
    position: fixed;
    top: 70px;
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    padding: var(--spacing-xl);
    gap: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-base);
  }

  .navbar-menu.open {
    transform: translateY(0);
    opacity: 1;
  }

  .navbar-toggle {
    display: flex;
  }

  .about-grid,
  .products-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .philosophy-content {
    grid-template-columns: 1fr;
  }

  .philosophy-text {
    padding-right: 0;
    margin-bottom: var(--spacing-2xl);
  }

  .roadmap-timeline {
    grid-template-columns: 1fr;
  }

  .roadmap-timeline::before {
    top: 0;
    bottom: 0;
    left: 40px;
    right: auto;
    width: 2px;
    height: auto;
  }

  .timeline-item {
    text-align: left;
    padding-left: 100px;
  }

  .timeline-year {
    position: absolute;
    left: 0;
    margin: 0;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--spacing-xl);
  }

  .footer-links {
    flex-wrap: wrap;
    justify-content: center;
  }

  .hero-actions {
    flex-direction: column;
  }

  .admin-panel {
    bottom: var(--spacing-md);
    right: var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  section {
    padding: var(--spacing-3xl) 0;
  }

  .product-image {
    height: 150px;
  }
}

/* ============================================
   打印样式
   ============================================ */
@media print {
  .news-ticker,
  .navbar,
  .hero-scroll-indicator,
  .admin-panel {
    display: none !important;
  }

  section {
    page-break-inside: avoid;
  }
}

/* ============================================
   辅助功能
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .news-ticker-track {
    animation: none;
  }
}

/* 焦点样式 */
:focus-visible {
  outline: 2px solid var(--primary-500);
  outline-offset: 2px;
}

/* 选择文本样式 */
::selection {
  background: var(--primary-200);
  color: var(--primary-900);
}

/* ============================================
   彻底隐藏外部平台添加的悬浮标识
   ============================================ */

/* 隐藏 coze 相关元素 */
[class*="coze"],
[id*="coze"],
[data-coze] {
  display: none !important;
  visibility: hidden !important;
  opacity: 0 !important;
  pointer-events: none !important;
  height: 0 !important;
  width: 0 !important;
  overflow: hidden !important;
  position: absolute !important;
  clip: rect(0, 0, 0, 0) !important;
}

/* 隐藏 扣子编程 相关元素 */
[class*="扣子"],
[id*="扣子"],
[class*="编程"],
[id*="编程"] {
  display: none !important;
  visibility: hidden !important;
}

/* 隐藏平台添加的悬浮标识容器 */
.floating,
.fixed-bottom,
.fixed-right,
.float-btn,
.platform-footer,
.system-footer,
.powered-by {
  display: none !important;
}

/* 隐藏外部链接（特定平台域名） */
a[href*="coze.cn"]:not([href^="/"]),
a[href*="coze.com"]:not([href^="/"]) {
  display: none !important;
}

/* 通用：任何包含特定关键词的块级元素 */
div:has(> a[href*="coze"]),
section:has(> a[href*="coze"]),
footer:has(> a[href*="coze"]) {
  display: none !important;
}