/* ============================================
   精工制造 - 传统 HTML+CSS 样式表
   原项目: React + Tailwind CSS
   ============================================ */

/* ---- CSS 变量定义 ---- */
:root {
  --primary: #E31629;
  --primary-hover: #b91222;
  --bg-dark: #0B0E14;
  --bg-darker: #0A0D14;
  --bg-card: #12151B;
  --bg-light: #F8F9FA;
  --bg-white: #ffffff;
  --text-white: #ffffff;
  --text-gray-100: #f3f4f6;
  --text-gray-300: #d1d5db;
  --text-gray-400: #9ca3af;
  --text-gray-500: #6b7280;
  --text-gray-600: #4b5563;
  --text-gray-900: #111827;
  --border-light: rgba(255,255,255,0.05);
  --border-white-10: rgba(255,255,255,0.10);
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --container-max: 1280px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--text-gray-900);
  background-color: var(--bg-dark);
  line-height: 1.6;
  overflow-x: hidden;
}

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

img {
  max-width: 100%;
  display: block;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul, ol {
  list-style: none;
}

input, textarea, select {
  font-family: inherit;
  outline: none;
}

/* ---- Font Awesome 图标适配 ---- */
.fas, .fab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* 确保Font Awesome图标继承父元素颜色 */
.header i,
.footer i,
.page-banner i,
.hero i,
.mobile-drawer i {
  color: inherit;
}

/* 下拉箭头尺寸 */
.dropdown-toggle i,
.mobile-submenu-toggle i {
  font-size: 12px;
  transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle i {
  transform: rotate(180deg);
}

/* 头部电话图标 */
.header-phone i {
  font-size: 20px;
  color: var(--text-gray-300);
}

/* 移动端菜单按钮 */
.mobile-menu-btn i {
  font-size: 24px;
}

/* 社交链接图标 */
.social-links i {
  font-size: 16px;
}

/* Footer联系图标 */
.footer-contact i {
  font-size: 16px;
  color: var(--text-gray-500);
  flex-shrink: 0;
}

/* Hero特性图标 */
.hero-feature i {
  font-size: 24px;
  color: var(--text-white);
}

/* 滚动指示器 */
.scroll-indicator i {
  font-size: 20px;
  animation: bounce 2s infinite;
}

/* 优势图标 */
.advantage-icon-inner i {
  font-size: 32px;
  color: #4A5568;
  transition: color 0.3s ease;
}

.advantage-item:hover .advantage-icon-inner i {
  color: var(--text-white);
}

/* 解决方案图标 */
.solution-item i {
  font-size: 32px;
  color: var(--text-white);
  stroke-width: 1.5;
  flex-shrink: 0;
  transition: color var(--transition-base);
}

.solution-item:hover i {
  color: var(--primary);
}

/* 产品导航按钮 */
.product-nav-btn i {
  font-size: 16px;
}

/* 新闻导航 */
.news-nav i,
.pagination i {
  font-size: 14px;
}

/* 新闻卡片元信息 */
.news-card-meta i {
  font-size: 16px;
  color: var(--text-gray-300);
  transition: all var(--transition-fast);
}

.news-card:hover .news-card-meta i {
  color: var(--primary);
  transform: translateX(4px);
}

/* 产品卡片链接 */
.product-card-link i,
.solution-card-link i,
.news-list-link i {
  font-size: 16px;
  margin-left: 8px;
  transition: transform var(--transition-fast);
}

.product-card:hover .product-card-link i,
.solution-card:hover .solution-card-link i,
.news-list-item:hover .news-list-link i {
  transform: translateX(4px);
}

/* 返回链接 */
.back-link i {
  font-size: 16px;
  margin-right: 8px;
}

/* 详情特性图标 */
.detail-feature-icon i {
  font-size: 24px;
}

/* 解决方案勾选列表 */
.solution-checklist i {
  font-size: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

/* 时间线 */
.timeline-dot i {
  font-size: 16px;
  color: var(--text-white);
}

/* 新闻详情元信息 */
.news-detail-meta i {
  font-size: 16px;
}

/* 文章底部导航 */
.article-footer-nav i {
  font-size: 16px;
}

/* 联系卡片图标 */
.contact-card-icon i {
  font-size: 20px;
}

/* 地图占位 */
.map-placeholder-content i {
  font-size: 32px;
  color: var(--primary);
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
}

/* 按钮内图标 */
.btn i {
  font-size: 14px;
}

/* 播放按钮 */
.play-btn i {
  font-size: 24px;
  margin-left: 4px;
}

/* ---- 容器 ---- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 768px) {
  .container {
    padding: 0 20px;
  }
}

/* ---- 通用工具类 ---- */
.text-primary { color: var(--primary); }
.bg-primary { background-color: var(--primary); }
.bg-dark { background-color: var(--bg-dark); }
.bg-light { background-color: var(--bg-light); }
.bg-white { background-color: var(--bg-white); }

.font-mono { font-family: var(--font-mono); }
.tracking-wider { letter-spacing: 0.05em; }
.tracking-widest { letter-spacing: 0.1em; }

/* ---- 按钮样式 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 32px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--text-white);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-outline {
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text-white);
}
.btn-outline:hover {
  border-color: var(--text-white);
}

.btn-outline-dark {
  border: 1px solid #e5e7eb;
  color: var(--text-gray-900);
}
.btn-outline-dark:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* ---- Header 导航栏 ---- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  transition: all 0.3s ease;
  border-bottom: 1px solid var(--border-white-10);
  padding: 24px 0;
  background: transparent;
}

.header.scrolled,
.header.not-home {
  background-color: var(--bg-dark);
  border-bottom-color: var(--border-light);
  padding: 16px 0;
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3);
}

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

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

.logo-icon {
  width: 40px;
  height: 40px;
  background-color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-white);
  font-size: 20px;
  font-weight: 700;
}

.logo-text h1 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-white);
  letter-spacing: 0.05em;
}

.logo-text p {
  font-size: 10px;
  color: var(--text-gray-400);
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

/* 桌面导航 */
.desktop-nav {
  display: none;
  align-items: center;
  gap: 40px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-white);
}

@media (min-width: 1024px) {
  .desktop-nav {
    display: flex;
  }
}

.nav-link {
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-base);
}

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

.nav-link.active {
  border-bottom-color: var(--primary);
}

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

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}

.dropdown-toggle:hover,
.dropdown-toggle.active {
  color: var(--primary);
}

.dropdown-toggle.active {
  border-bottom-color: var(--primary);
}

.dropdown-toggle svg {
  width: 12px;
  height: 12px;
  transition: transform 0.3s ease;
}

.dropdown:hover .dropdown-toggle svg {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: 120%;
  left: 50%;
  transform: translateX(-50%);
  width: 192px;
  background: var(--bg-white);
  color: var(--text-gray-900);
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.2);
  border-radius: 2px;
  overflow: hidden;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 50;
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  top: 100%;
}

.dropdown-menu .menu-accent {
  height: 4px;
  width: 100%;
  background-color: var(--primary);
}

.dropdown-menu a {
  display: block;
  padding: 12px 24px;
  font-size: 14px;
  border-bottom: 1px solid #f3f4f6;
  transition: all var(--transition-fast);
}

.dropdown-menu a:last-child {
  border-bottom: none;
}

.dropdown-menu a:hover {
  background-color: #f9fafb;
  color: var(--primary);
}

/* 联系电话 */
.header-phone {
  display: none;
  align-items: center;
  gap: 12px;
}

@media (min-width: 1024px) {
  .header-phone {
    display: flex;
  }
}

.header-phone svg {
  width: 20px;
  height: 20px;
  color: var(--text-gray-300);
}

.header-phone .phone-number {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-white);
}

.header-phone .phone-label {
  font-size: 10px;
  color: var(--text-gray-400);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: block;
  color: var(--text-white);
  z-index: 50;
}

@media (min-width: 1024px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

/* 移动端菜单抽屉 */
.mobile-drawer {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-dark);
  overflow-y: auto;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  opacity: 0;
  visibility: hidden;
  z-index: 40;
  pointer-events: none;
}

.mobile-drawer.active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  color: var(--text-white);
  padding: 24px;
}

.mobile-drawer-nav a,
.mobile-submenu-toggle {
  padding: 16px 0;
  border-bottom: 1px solid var(--border-white-10);
  font-size: 18px;
}

.mobile-submenu-toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  color: var(--text-white);
}

.mobile-submenu-toggle svg {
  width: 20px;
  height: 20px;
  transition: transform 0.3s ease;
}

.mobile-submenu-toggle.open svg {
  transform: rotate(180deg);
  color: var(--primary);
}

.mobile-submenu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.mobile-submenu.open {
  max-height: 240px;
}

.mobile-submenu a {
  display: block;
  padding: 8px 0 8px 16px;
  color: var(--text-gray-400);
  font-size: 16px;
  border-bottom: none;
}

.mobile-submenu a:hover {
  color: var(--primary);
}

.mobile-phone {
  margin-top: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: rgba(255,255,255,0.05);
  padding: 24px;
  border-radius: 2px;
}

.mobile-phone svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.mobile-phone .phone-number {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-white);
}

.mobile-phone .phone-label {
  font-size: 12px;
  color: var(--text-gray-400);
}

/* ---- Footer ---- */
.footer {
  background-color: var(--bg-dark);
  padding-top: 80px;
  padding-bottom: 32px;
  color: var(--text-gray-400);
  border-top: 1px solid var(--border-light);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  margin-bottom: 64px;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
  }
}

.footer-brand {
  padding-right: 32px;
}

.footer-brand .logo {
  margin-bottom: 24px;
}

.footer-brand .logo-icon {
  width: 32px;
  height: 32px;
  font-size: 14px;
}

.footer-brand .logo-text h2 {
  font-size: 18px;
  color: var(--text-white);
  letter-spacing: 0.1em;
}

.footer-brand .logo-text div {
  font-size: 9px;
  letter-spacing: 0.2em;
  color: var(--text-gray-500);
  text-transform: uppercase;
}

.footer-brand p {
  font-size: 12px;
  line-height: 2;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

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

.social-links a {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.social-links a:hover {
  background-color: var(--primary);
  color: var(--text-white);
}

.social-links svg {
  width: 16px;
  height: 16px;
}

.footer-column h4 {
  color: var(--text-white);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.footer-column ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-column li a {
  font-size: 12px;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.footer-column li a:hover {
  color: var(--text-white);
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 12px;
  letter-spacing: 0.05em;
}

.footer-contact svg {
  width: 16px;
  height: 16px;
  color: var(--text-gray-500);
  flex-shrink: 0;
}

.footer-contact .contact-value {
  color: var(--text-white);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  font-size: 10px;
  letter-spacing: 0.1em;
  color: var(--text-gray-600);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
  }
}

.footer-bottom a:hover {
  color: var(--text-gray-400);
}

/* ---- Page Banner ---- */
.page-banner {
  position: relative;
  padding-top: 128px;
  padding-bottom: 80px;
  background-color: var(--bg-dark);
  overflow: hidden;
}

@media (min-width: 1024px) {
  .page-banner {
    padding-top: 192px;
    padding-bottom: 128px;
  }
}

.page-banner-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
}

.page-banner-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 17, 24, 0.8);
  mix-blend-mode: multiply;
}

.page-banner-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 13, 20, 0.7);
}

.page-banner-content {
  position: relative;
  z-index: 10;
  text-align: center;
}

.page-banner-content h1 {
  font-size: 30px;
  color: var(--text-white);
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
}

@media (min-width: 768px) {
  .page-banner-content h1 {
    font-size: 48px;
  }
}

.page-banner-content .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
  margin: 0 auto 24px;
}

.page-banner-content p {
  color: var(--text-gray-400);
  letter-spacing: 0.1em;
  font-size: 14px;
  text-transform: uppercase;
}

/* ============================================
   首页各 Section
   ============================================ */

/* ---- Hero Section ---- */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  background-color: var(--bg-dark);
  overflow: hidden;
  display: flex;
  align-items: center;
}

/* Hero幻灯片 */
.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s ease;
  z-index: 1;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, var(--bg-dark), rgba(11,14,20,0.8), transparent);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.4);
}

.hero-content {
  position: relative;
  z-index: 10;
  width: 100%;
  padding-top: 80px;
}

.hero-content h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.hero-content h2 span {
  margin: 0 16px;
  color: var(--text-gray-500);
  font-weight: 300;
}

@media (min-width: 768px) {
  .hero-content h2 {
    font-size: 60px;
  }
}

@media (min-width: 1024px) {
  .hero-content h2 {
    font-size: 72px;
  }
}

.hero-subtitle {
  font-size: 20px;
  color: var(--text-gray-300);
  margin-bottom: 32px;
  letter-spacing: 0.1em;
  font-weight: 300;
}

@media (min-width: 768px) {
  .hero-subtitle {
    font-size: 24px;
  }
}

.hero-desc {
  color: var(--text-gray-400);
  max-width: 512px;
  margin-bottom: 40px;
  line-height: 1.6;
  font-size: 14px;
}

/* Hero 右侧分页 */
.hero-pagination {
  position: absolute;
  right: 40px;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  gap: 24px;
  font-size: 12px;
  font-family: var(--font-mono);
}

.hero-pagination .page-item {
  display: flex;
  align-items: center;
  gap: 16px;
  color: var(--text-gray-500);
  cursor: pointer;
  opacity: 0.5;
  transition: all var(--transition-base);
}

.hero-pagination .page-item:hover {
  color: var(--text-white);
  opacity: 1;
}

.hero-pagination .page-item.active {
  color: var(--primary);
  opacity: 1;
}

.hero-pagination .page-item .line {
  height: 2px;
  background-color: currentColor;
  transition: width var(--transition-base);
}

.hero-pagination .page-item.active .line {
  width: 32px;
}

.hero-pagination .page-item:not(.active) .line {
  width: 16px;
}

/* Hero 底部特性栏 */
.hero-features {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 10;
  border-top: 1px solid var(--border-white-10);
  background: rgba(11, 14, 20, 0.8);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
}

.hero-features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  padding: 24px 0;
}

@media (min-width: 768px) {
  .hero-features-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.hero-feature {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.hero-feature svg {
  width: 24px;
  height: 24px;
  color: var(--text-white);
  stroke-width: 1.5;
  flex-shrink: 0;
}

.hero-feature h4 {
  color: var(--text-white);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 4px;
  letter-spacing: 0.05em;
}

.hero-feature p {
  color: var(--text-gray-500);
  font-size: 10px;
  letter-spacing: 0.05em;
}

/* 滚动提示 */
.scroll-indicator {
  position: absolute;
  bottom: 112px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-gray-500);
  cursor: pointer;
  transition: color var(--transition-base);
}

.scroll-indicator:hover {
  color: var(--text-white);
}

.scroll-indicator svg {
  width: 20px;
  height: 20px;
  stroke-width: 1.5;
  animation: bounce 2s infinite;
}

.scroll-indicator span {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

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

/* ---- Product Center Section ---- */
.section-product {
  padding: 96px 0;
  background-color: var(--bg-white);
}

.product-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: 4fr 8fr;
  }
}

.product-intro h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.product-intro .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
  margin-bottom: 24px;
}

.product-intro p {
  color: var(--text-gray-500);
  font-size: 14px;
  margin-bottom: 48px;
  letter-spacing: 0.05em;
  line-height: 1.6;
}

.product-showcase {
  background-color: var(--bg-light);
  border-radius: 2px;
  padding: 48px;
  display: flex;
  align-items: center;
  position: relative;
}

@media (max-width: 768px) {
  .product-showcase {
    flex-direction: column;
    padding: 24px;
  }
}

/* 产品展示项 - 每个产品一个完整的可点击卡片 */
.product-showcase-item {
  width: 100%;
}

/* 产品主内容区：图片+文字 */
.product-showcase-main {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

@media (max-width: 768px) {
  .product-showcase-main {
    flex-direction: column;
  }
}

.product-showcase-main > .product-showcase-image {
  width: 50%;
  padding-right: 32px;
  position: relative;
  z-index: 10;
  flex-shrink: 0;
}

.product-showcase-main > .product-showcase-body {
  width: 50%;
  padding-left: 32px;
  display: block;
}

@media (max-width: 768px) {
  .product-showcase-main > .product-showcase-image,
  .product-showcase-main > .product-showcase-body {
    width: 100%;
    padding-left: 0;
    padding-right: 0;
  }
  .product-showcase-main > .product-showcase-image {
    margin-bottom: 24px;
  }
}

.product-showcase-image img {
  width: 100%;
  height: auto;
  min-height: 200px;
  object-fit: cover;
  display: block;
  filter: drop-shadow(0 25px 25px rgba(0,0,0,0.3));
  mix-blend-mode: multiply;
  transition: opacity 0.3s ease;
  background-color: var(--bg-light);
}

.product-showcase-body h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.product-showcase-body p {
  color: var(--text-gray-500);
  font-size: 14px;
  line-height: 2;
  margin-bottom: 0;
}

/* 产品操作栏：了解更多 + 切换按钮 同一行 */
.product-showcase-actions {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  margin-top: 24px;
  padding-left: calc(50% + 32px);
}

@media (max-width: 768px) {
  .product-showcase-actions {
    padding-left: 0;
    justify-content: center;
  }
}

.product-showcase-actions .btn {
  border-radius: 24px;
  flex-shrink: 0;
}

/* 产品导航按钮 */
.product-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.product-nav-buttons {
  display: flex;
  gap: 8px;
}

.product-nav-btn {
  width: 40px;
  height: 40px;
  border: 1px solid #d1d5db;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray-400);
  transition: all var(--transition-fast);
}

.product-nav-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.product-nav-btn.primary {
  border-color: var(--primary);
  background-color: var(--primary);
  color: var(--text-white);
}

.product-nav-btn.primary:hover {
  background-color: var(--primary-hover);
}

.product-nav-counter {
  display: flex;
  align-items: center;
  font-size: 14px;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  position: absolute;
  bottom: 48px;
  right: 48px;
  gap: 4px;
}

@media (max-width: 768px) {
  .product-nav-counter {
    position: static;
    margin-top: 16px;
    justify-content: center;
  }
}

.product-nav-counter .current {
  color: var(--primary);
  font-weight: 700;
}

.product-nav-counter .sep {
  margin: 0 8px;
  color: var(--text-gray-400);
}

.product-nav-counter .total {
  color: var(--text-gray-400);
}

/* ---- Solutions Section ---- */
.section-solutions {
  padding: 128px 0;
  position: relative;
  overflow: hidden;
  background-color: var(--bg-darker);
}

.section-solutions-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  background-size: cover;
  background-position: center;
  filter: grayscale(100%);
}

.section-solutions-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 13, 20, 0.8);
}

.section-solutions .container {
  position: relative;
  z-index: 10;
}

.section-solutions h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.section-solutions .section-desc {
  color: var(--text-gray-400);
  font-size: 14px;
  letter-spacing: 0.05em;
  margin-bottom: 96px;
}

.solutions-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

@media (min-width: 768px) {
  .solutions-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .solutions-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

.solution-item {
  display: flex;
  align-items: center;
  gap: 16px;
  cursor: pointer;
  position: relative;
}

.solution-item:not(:first-child)::before {
  content: '';
  position: absolute;
  left: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 48px;
  background: rgba(255,255,255,0.05);
  display: none;
}

@media (min-width: 1024px) {
  .solution-item:not(:first-child)::before {
    display: block;
  }
}

.solution-item svg {
  width: 32px;
  height: 32px;
  color: var(--text-white);
  stroke-width: 1.5;
  flex-shrink: 0;
  transition: color var(--transition-base);
}

.solution-item:hover svg {
  color: var(--primary);
}

.solution-item h3 {
  color: var(--text-white);
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  transition: color var(--transition-base);
}

.solution-item:hover h3 {
  color: var(--primary);
}

.solution-item p {
  color: var(--text-gray-400);
  font-size: 12px;
  letter-spacing: 0.05em;
}

.solutions-more {
  margin-top: 96px;
  display: flex;
  justify-content: flex-start;
}

.solutions-more .btn-outline {
  border-radius: 2px;
}

/* ---- Advantages Section ---- */
.section-advantages {
  padding: 96px 0;
  background-color: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 80px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-header h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.section-header .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
}

.advantages-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  position: relative;
}

@media (min-width: 768px) {
  .advantages-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .advantages-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.advantages-grid::before {
  content: '';
  position: absolute;
  top: 44px;
  left: 10%;
  right: 10%;
  height: 1px;
  background-color: #e5e7eb;
  display: none;
  z-index: 0;
}

@media (min-width: 1024px) {
  .advantages-grid::before {
    display: block;
  }
}

.advantage-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 10;
  cursor: default;
}

.advantage-icon-wrap {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--bg-white);
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 32px;
  border: 1px solid #f3f4f6;
  transition: transform 0.3s ease;
}

.advantage-item:hover .advantage-icon-wrap {
  transform: translateY(-8px);
}

.advantage-icon-inner {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background-color: #F3F5F7;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease;
}

.advantage-item:hover .advantage-icon-inner {
  background-color: var(--primary);
}

.advantage-icon-inner svg {
  width: 32px;
  height: 32px;
  color: #4A5568;
  stroke-width: 1.5;
  transition: color 0.3s ease;
}

.advantage-item:hover .advantage-icon-inner svg {
  color: var(--text-white);
}

.advantage-item h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.advantage-item p {
  color: var(--text-gray-500);
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: 0.05em;
  white-space: pre-line;
}

/* ---- About Section ---- */
.section-about {
  background-color: #1A1F29;
  display: flex;
  flex-direction: column;
}

@media (min-width: 1024px) {
  .section-about {
    flex-direction: row;
  }
}

.about-media {
  position: relative;
  min-height: 400px;
}

@media (min-width: 1024px) {
  .about-media {
    width: 50%;
    min-height: 600px;
  }
}

.about-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.6;
  filter: grayscale(100%);
}

.about-media .play-btn {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.about-media .play-btn button {
  width: 80px;
  height: 80px;
  background: rgba(255,255,255,0.1);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.2);
  transition: all var(--transition-base);
}

.about-media .play-btn button:hover {
  background-color: var(--primary);
  border-color: var(--primary);
}

.about-media .play-btn svg {
  width: 24px;
  height: 24px;
  color: var(--text-white);
  margin-left: 4px;
  transition: transform var(--transition-base);
}

.about-media .play-btn button:hover svg {
  transform: scale(1.1);
}

.about-content {
  background-color: var(--bg-card);
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: var(--text-white);
}

@media (min-width: 1024px) {
  .about-content {
    width: 50%;
    padding: 96px;
  }
}

.about-content h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.about-content .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
  margin-bottom: 32px;
}

.about-content p {
  color: var(--text-gray-400);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
  max-width: 512px;
}

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 64px;
}

@media (min-width: 768px) {
  .about-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

.about-stats .stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-white);
  margin-bottom: 8px;
  font-family: var(--font-mono);
}

.about-stats .stat-label {
  color: var(--text-gray-500);
  font-size: 12px;
  letter-spacing: 0.05em;
}

/* ---- News Section ---- */
.section-news {
  padding: 96px 0;
  background-color: var(--bg-white);
}

.news-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 64px;
}

.news-header h2 {
  font-size: 30px;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.news-header .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
}

.news-nav {
  display: flex;
  gap: 8px;
}

.news-nav button {
  width: 40px;
  height: 40px;
  border: 1px solid #e5e7eb;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-gray-400);
  transition: all var(--transition-fast);
}

.news-nav button:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.news-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .news-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.news-card {
  cursor: pointer;
}

.news-card-image {
  overflow: hidden;
  margin-bottom: 24px;
  border-radius: 2px;
  background-color: var(--bg-light);
  aspect-ratio: 4/3;
}

.news-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.news-card h3 {
  font-size: 16px;
  font-weight: 500;
  color: var(--text-gray-900);
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.news-card:hover h3 {
  color: var(--primary);
}

.news-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #f3f4f6;
  padding-top: 16px;
}

.news-card-meta .date {
  color: var(--text-gray-400);
  font-size: 12px;
  font-family: var(--font-mono);
}

.news-card-meta svg {
  width: 16px;
  height: 16px;
  color: var(--text-gray-300);
  transition: all var(--transition-fast);
}

.news-card:hover .news-card-meta svg {
  color: var(--primary);
  transform: translateX(4px);
}

/* ============================================
   产品中心页
   ============================================ */

/* 分类筛选 */
.category-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
}

.category-filter a {
  padding: 8px 24px;
  font-size: 14px;
  transition: all var(--transition-fast);
}

.category-filter a.active {
  background-color: var(--primary);
  color: var(--text-white);
}

.category-filter a:not(.active) {
  background-color: var(--bg-white);
  color: var(--text-gray-600);
  border: 1px solid #e5e7eb;
}

.category-filter a:not(.active):hover {
  color: var(--primary);
}

/* 产品网格 */
.products-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .products-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.product-card {
  background-color: var(--bg-white);
  padding: 24px;
  border: 1px solid #f3f4f6;
  cursor: pointer;
  transition: box-shadow var(--transition-base);
}

.product-card:hover {
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.product-card-image {
  aspect-ratio: 4/3;
  background-color: var(--bg-light);
  overflow: hidden;
  margin-bottom: 24px;
  position: relative;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
  transition: transform 0.5s ease;
}

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

.product-card-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: var(--primary);
  color: var(--text-white);
  font-size: 10px;
  padding: 4px 8px;
  letter-spacing: 0.05em;
}

.product-card h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.product-card:hover h3 {
  color: var(--primary);
}

.product-card p {
  font-size: 14px;
  color: var(--text-gray-500);
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-link {
  display: flex;
  align-items: center;
  color: var(--primary);
  font-size: 14px;
  font-weight: 500;
}

.product-card-link svg {
  width: 16px;
  height: 16px;
  margin-left: 8px;
  transition: transform var(--transition-fast);
}

.product-card:hover .product-card-link svg {
  transform: translateX(4px);
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 64px;
}

.pagination a,
.pagination span {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-family: var(--font-mono);
}

.pagination a.active {
  background-color: var(--primary);
  color: var(--text-white);
}

.pagination a:not(.active) {
  background-color: var(--bg-white);
  border: 1px solid #e5e7eb;
  color: var(--text-gray-600);
  transition: all var(--transition-fast);
}

.pagination a:not(.active):hover {
  color: var(--primary);
  border-color: var(--primary);
}

.pagination span {
  color: var(--text-gray-400);
}

/* ============================================
   产品详情页
   ============================================ */
.product-detail-top {
  padding-top: 128px;
  padding-bottom: 40px;
  background-color: var(--bg-dark);
  color: var(--text-white);
}

.back-link {
  display: inline-flex;
  align-items: center;
  color: var(--text-gray-400);
  font-size: 14px;
  margin-bottom: 32px;
  transition: color var(--transition-fast);
}

.back-link:hover {
  color: var(--text-white);
}

.back-link svg {
  width: 16px;
  height: 16px;
  margin-right: 8px;
}

.product-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
}

@media (min-width: 1024px) {
  .product-detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.product-detail-image {
  aspect-ratio: 4/3;
  border-radius: 2px;
  overflow: hidden;
}

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

.product-detail-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.product-detail-tag {
  background-color: var(--primary);
  color: var(--text-white);
  font-size: 12px;
  padding: 4px 12px;
  width: fit-content;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
}

.product-detail-info h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.product-detail-info > p {
  color: var(--text-gray-400);
  line-height: 1.6;
  margin-bottom: 32px;
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.product-spec {
  border-left: 2px solid var(--primary);
  padding-left: 16px;
}

.product-spec .spec-value {
  font-size: 24px;
  font-weight: 700;
  font-family: var(--font-mono);
}

.product-spec .spec-label {
  font-size: 12px;
  color: var(--text-gray-500);
  margin-top: 4px;
}

.product-detail-actions {
  display: flex;
  gap: 16px;
}

/* 详情 Tab */
.detail-tabs {
  display: flex;
  gap: 32px;
  border-bottom: 1px solid #e5e7eb;
  margin-bottom: 48px;
}

.detail-tab {
  padding-bottom: 16px;
  font-size: 16px;
  font-weight: 500;
  color: var(--text-gray-500);
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.detail-tab:hover {
  color: var(--text-gray-900);
}

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

.detail-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 768px) {
  .detail-features {
    grid-template-columns: repeat(3, 1fr);
  }
}

.detail-feature {
  display: flex;
  gap: 16px;
}

.detail-feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: #fce8ea;
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.detail-feature h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.detail-feature p {
  color: var(--text-gray-600);
  font-size: 14px;
  line-height: 1.6;
}

/* ============================================
   解决方案页
   ============================================ */
.solutions-page-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
}

@media (min-width: 768px) {
  .solutions-page-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.solution-card {
  display: flex;
  flex-direction: column;
  background-color: var(--bg-white);
  border: 1px solid #f3f4f6;
  border-radius: 2px;
  overflow: hidden;
  transition: box-shadow var(--transition-base);
}

.solution-card:hover {
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.solution-card-image {
  height: 256px;
  overflow: hidden;
  position: relative;
  background-color: var(--bg-light);
}

.solution-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.7s ease;
}

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

.solution-card-icon {
  position: absolute;
  bottom: 24px;
  left: 24px;
  width: 48px;
  height: 48px;
  background-color: var(--primary);
  color: var(--text-white);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.2);
}

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

.solution-card-content {
  padding: 32px;
  padding-bottom: 40px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.solution-card-content h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

.solution-card:hover .solution-card-content h3 {
  color: var(--primary);
}

.solution-card-content p {
  color: var(--text-gray-500);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 32px;
  flex-grow: 1;
}

.solution-card-link {
  display: flex;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  border-top: 1px solid #f3f4f6;
  padding-top: 24px;
  color: var(--text-gray-400);
  transition: color var(--transition-fast);
}

.solution-card:hover .solution-card-link {
  color: var(--primary);
}

.solution-card-link svg {
  width: 16px;
  height: 16px;
  margin-left: 8px;
  transition: transform var(--transition-fast);
}

.solution-card:hover .solution-card-link svg {
  transform: translateX(8px);
}

/* ============================================
   解决方案详情页
   ============================================ */
.solution-detail-content {
  color: var(--text-gray-900);
}

.solution-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
  margin-bottom: 80px;
}

@media (min-width: 1024px) {
  .solution-detail-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.solution-detail-text h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.solution-detail-text .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
  margin-bottom: 32px;
}

.solution-detail-text p {
  color: var(--text-gray-600);
  line-height: 1.6;
  margin-bottom: 24px;
}

.solution-checklist {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.solution-checklist li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  font-weight: 500;
}

.solution-checklist svg {
  width: 20px;
  height: 20px;
  color: var(--primary);
  flex-shrink: 0;
}

.solution-detail-media {
  position: relative;
}

.solution-detail-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 25px 50px -12px rgba(0,0,0,0.3);
}

.solution-stat-card {
  position: absolute;
  bottom: -32px;
  left: -32px;
  background-color: var(--bg-dark);
  color: var(--text-white);
  padding: 32px;
  border-radius: 2px;
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.3);
  display: none;
}

@media (min-width: 768px) {
  .solution-stat-card {
    display: block;
  }
}

.solution-stat-card .stat-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.solution-stat-card .stat-value span {
  font-size: 20px;
}

.solution-stat-card .stat-label {
  font-size: 14px;
  letter-spacing: 0.05em;
}

/* 推荐设备 */
.recommended-devices h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}

.devices-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

@media (min-width: 768px) {
  .devices-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.device-card {
  border: 1px solid #f3f4f6;
  padding: 24px;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.device-card:hover {
  border-color: var(--primary);
}

.device-card-image {
  height: 192px;
  background-color: var(--bg-light);
  margin-bottom: 24px;
  overflow: hidden;
}

.device-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: multiply;
  opacity: 0.8;
  transition: transform var(--transition-base);
}

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

.device-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

.device-card:hover h4 {
  color: var(--primary);
}

.device-card p {
  font-size: 12px;
  color: var(--text-gray-500);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ============================================
   关于我们页
   ============================================ */
.about-page-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
  margin-bottom: 96px;
}

@media (min-width: 1024px) {
  .about-page-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-page-image {
  aspect-ratio: 1;
  background-color: var(--bg-light);
  position: relative;
}

@media (min-width: 1024px) {
  .about-page-image {
    aspect-ratio: auto;
  }
}

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

.about-page-image::after {
  content: '';
  position: absolute;
  inset: 0;
  background-color: var(--primary);
  mix-blend-mode: overlay;
  opacity: 0.2;
}

.about-page-text {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.about-page-text h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.about-page-text .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
  margin-bottom: 32px;
}

.about-page-text p {
  color: var(--text-gray-600);
  line-height: 1.6;
  margin-bottom: 24px;
}

.about-page-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  border-top: 1px solid #f3f4f6;
  padding-top: 40px;
}

.about-page-stats .stat-value {
  font-size: 30px;
  font-weight: 700;
  color: var(--primary);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.about-page-stats .stat-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray-900);
}

/* 发展历程时间线 */
.timeline-section {
  background-color: var(--bg-light);
  padding: 48px;
  border-radius: 2px;
  border: 1px solid #f3f4f6;
}

.timeline-section h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 40px;
  letter-spacing: 0.05em;
  text-align: center;
}

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.timeline::before {
  content: '';
  position: absolute;
  right: 11px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: linear-gradient(to bottom, transparent, #d1d5db, transparent);
}

@media (min-width: 768px) {
  .timeline::before {
    left: 50%;
    right: auto;
    top: 0;
    bottom: 0;
    transform: translateX(-50%);
  }
}

.timeline-item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

/* 移动端：内容在左，圆点在右 */
.timeline-content {
  flex: 1;
  padding: 16px;
  background: var(--bg-white);
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  border: 1px solid #f3f4f6;
  order: 1;
}

.timeline-dot {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 3px solid var(--bg-white);
  background-color: #d1d5db;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  flex-shrink: 0;
  margin-top: 12px;
  z-index: 10;
  order: 2;
  transition: background-color var(--transition-fast);
}

.timeline-item:hover .timeline-dot {
  background-color: var(--primary);
}

.timeline-dot.active {
  background-color: var(--primary);
}

/* 桌面端：时间轴居中，内容左右分布 */
@media (min-width: 768px) {
  .timeline-item {
    align-items: center;
    justify-content: flex-start;
  }

  .timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
  }

  .timeline-item:nth-child(even) {
    flex-direction: row;
  }

  .timeline-content {
    width: calc(50% - 60px);
    flex: none;
    order: 0;
  }

  .timeline-item:nth-child(odd) .timeline-content {
    margin-left: 60px;
  }

  .timeline-item:nth-child(even) .timeline-content {
    margin-right: 60px;
  }

  .timeline-dot {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border-width: 4px;
    margin: 0;
    order: 0;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
  }
}

.timeline-content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.timeline-content-header .year {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-gray-900);
}

.timeline-badge {
  font-size: 12px;
  font-weight: 500;
  color: var(--primary);
  background-color: #fef2f2;
  padding: 4px 8px;
  border-radius: 4px;
}

.timeline-content p {
  font-size: 14px;
  color: var(--text-gray-600);
}

/* ============================================
   新闻资讯页
   ============================================ */
.news-list {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.news-list-item {
  background-color: var(--bg-white);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  border: 1px solid #f3f4f6;
  transition: box-shadow var(--transition-base);
}

@media (min-width: 768px) {
  .news-list-item {
    flex-direction: row;
    padding: 32px;
  }
}

.news-list-item:hover {
  box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
}

.news-list-image {
  width: 100%;
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: var(--bg-light);
  flex-shrink: 0;
}

@media (min-width: 768px) {
  .news-list-image {
    width: 33.333%;
    aspect-ratio: auto;
  }
}

.news-list-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.news-list-item:hover .news-list-image img {
  transform: scale(1.05);
}

.news-list-content {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-list-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 16px;
}

.news-date-block {
  background-color: #F3F5F7;
  color: var(--primary);
  text-align: center;
  padding: 8px 16px;
  border-left: 4px solid var(--primary);
  flex-shrink: 0;
}

.news-date-block .day {
  font-size: 20px;
  font-weight: 700;
  font-family: var(--font-mono);
  line-height: 1;
}

.news-date-block .month {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.news-list-content h3 {
  font-size: 20px;
  font-weight: 700;
  transition: color var(--transition-fast);
}

.news-list-item:hover .news-list-content h3 {
  color: var(--primary);
}

.news-list-content p {
  color: var(--text-gray-500);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 24px;
}

.news-list-link {
  display: flex;
  align-items: center;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray-400);
  margin-top: auto;
  transition: color var(--transition-fast);
}

.news-list-item:hover .news-list-link {
  color: var(--primary);
}

.news-list-link svg {
  width: 16px;
  height: 16px;
  margin-left: 8px;
  transition: transform var(--transition-fast);
}

.news-list-item:hover .news-list-link svg {
  transform: translateX(4px);
}

/* ============================================
   新闻详情页
   ============================================ */
.news-detail-page {
  background-color: var(--bg-white);
  min-height: 100vh;
  padding-top: 128px;
  padding-bottom: 96px;
  color: var(--text-gray-900);
}

.news-detail-container {
  max-width: 896px;
  margin: 0 auto;
  padding: 0 40px;
}

@media (max-width: 768px) {
  .news-detail-container {
    padding: 0 20px;
  }
}

.news-detail-header {
  margin-bottom: 48px;
  border-bottom: 1px solid #f3f4f6;
  padding-bottom: 32px;
  text-align: center;
}

@media (min-width: 768px) {
  .news-detail-header {
    text-align: left;
  }
}

.news-detail-header h1 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 24px;
  line-height: 1.2;
}

@media (min-width: 768px) {
  .news-detail-header h1 {
    font-size: 36px;
  }
}

.news-detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 24px;
  font-size: 14px;
  color: var(--text-gray-500);
}

@media (min-width: 768px) {
  .news-detail-meta {
    justify-content: flex-start;
  }
}

.news-detail-meta span,
.news-detail-meta button {
  display: flex;
  align-items: center;
  gap: 8px;
}

.news-detail-meta svg {
  width: 16px;
  height: 16px;
}

.news-detail-meta button:hover {
  color: var(--primary);
}

/* 文章正文 */
.article-content {
  font-size: 16px;
  line-height: 1.8;
}

.article-content .lead {
  font-size: 20px;
  color: var(--text-gray-600);
  margin-bottom: 32px;
  border-left: 4px solid var(--primary);
  padding-left: 16px;
}

.article-content img {
  width: 100%;
  margin-bottom: 32px;
  border-radius: 2px;
}

.article-content h3 {
  font-size: 24px;
  font-weight: 700;
  margin-top: 40px;
  margin-bottom: 16px;
}

.article-content p {
  color: var(--text-gray-600);
  margin-bottom: 24px;
  line-height: 1.6;
}

.article-content blockquote {
  background-color: var(--bg-light);
  padding: 32px;
  border: 1px solid #f3f4f6;
  margin: 40px 0;
  font-style: italic;
  color: var(--text-gray-600);
  text-align: center;
}

.article-content blockquote cite {
  display: block;
  font-style: normal;
  font-weight: 700;
  color: var(--text-gray-900);
  margin-top: 16px;
  font-size: 14px;
}

/* 文章底部导航 */
.article-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #f3f4f6;
  padding-top: 32px;
  margin-top: 64px;
}

.article-footer-nav a {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-gray-500);
  display: flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.article-footer-nav a:hover {
  color: var(--primary);
}

.article-footer-nav a.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.article-footer-nav svg {
  width: 16px;
  height: 16px;
}

/* ============================================
   联系我们页
   ============================================ */
.contact-page {
  background-color: var(--bg-white);
  min-height: 100vh;
  padding-bottom: 96px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 64px;
}

@media (min-width: 1024px) {
  .contact-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.contact-info h2 {
  font-size: 30px;
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: 0.05em;
}

.contact-info .accent-line {
  width: 40px;
  height: 4px;
  background-color: var(--primary);
  margin-bottom: 32px;
}

.contact-info > p {
  color: var(--text-gray-600);
  line-height: 1.6;
  margin-bottom: 48px;
}

.contact-cards {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.contact-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background-color: var(--bg-light);
  border-radius: 2px;
  transition: box-shadow var(--transition-base);
}

.contact-card:hover {
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
}

.contact-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--bg-white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  border: 1px solid #f3f4f6;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.contact-card:hover .contact-card-icon {
  border-color: var(--primary);
  color: var(--primary);
}

.contact-card-icon svg {
  width: 20px;
  height: 20px;
}

.contact-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-card .phone-big {
  font-size: 24px;
  font-family: var(--font-mono);
  color: var(--primary);
  font-weight: 700;
}

.contact-card p {
  color: var(--text-gray-600);
  font-family: var(--font-mono);
}

/* 联系表单 */
.contact-form-section {
  display: flex;
  flex-direction: column;
  gap: 40px;
}

.contact-form {
  background-color: var(--bg-dark);
  color: var(--text-white);
  padding: 40px;
  border-radius: 2px;
  box-shadow: 0 20px 25px -5px rgba(0,0,0,0.2);
}

.contact-form h3 {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 32px;
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

@media (min-width: 768px) {
  .form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--text-gray-400);
  font-weight: 500;
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 12px;
  color: var(--text-white);
  border-radius: 2px;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--primary);
}

.form-group select {
  appearance: none;
  -webkit-appearance: none;
}

.form-group select option {
  background-color: var(--bg-dark);
}

.form-group textarea {
  resize: none;
}

.form-submit {
  display: flex;
  justify-content: flex-end;
}

/* 地图占位 */
.map-placeholder {
  background-color: #e5e7eb;
  height: 256px;
  border-radius: 2px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-placeholder img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  mix-blend-mode: luminosity;
  opacity: 0.5;
}

.map-placeholder-content {
  position: relative;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.map-placeholder-content svg {
  width: 32px;
  height: 32px;
  color: var(--primary);
  filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
}

.map-placeholder-content .map-label {
  background: var(--bg-white);
  padding: 4px 12px;
  font-weight: 700;
  font-size: 14px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  margin-top: 8px;
  border-radius: 2px;
}

/* ============================================
   页面内容区通用
   ============================================ */
.page-content {
  background-color: var(--bg-light);
  min-height: 100vh;
  padding-bottom: 96px;
}

.page-content-white {
  background-color: var(--bg-white);
  min-height: 100vh;
  padding-bottom: 96px;
}

.content-section {
  padding-top: 80px;
}

/* ============================================
   入场动画系统 (参考 hruis 项目)
   ============================================ */

/* 动画关键帧 */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(40px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

/* 初始状态：隐藏，准备动画 */
[data-animate] {
  opacity: 0;
  will-change: opacity, transform;
}

/* 动画触发状态 */
[data-animate="fade-up"].animate-in {
  animation: fadeInUp 0.6s ease-out forwards;
}

[data-animate="fade-left"].animate-in {
  animation: fadeInLeft 0.7s ease-out forwards;
}

[data-animate="fade-right"].animate-in {
  animation: fadeInRight 0.7s ease-out forwards;
}

[data-animate="fade-down"].animate-in {
  animation: fadeInDown 0.5s ease-out forwards;
}

[data-animate="scale-in"].animate-in {
  animation: scaleIn 0.5s ease-out forwards;
}

/* Header 入场动画 */
[data-header-animate].animate-in {
  animation: fadeInUp 0.5s ease-out forwards;
}

.header .logo[data-header-animate].animate-in {
  animation-name: fadeInLeft;
}

.header .desktop-nav[data-header-animate].animate-in {
  animation-name: fadeInDown;
}

.header .header-phone[data-header-animate].animate-in {
  animation-name: fadeInRight;
}

/* 页面横幅动画 */
.page-banner-content[data-animate="fade-up"].animate-in h1 {
  animation: fadeInUp 0.5s ease-out forwards;
}

.page-banner-content[data-animate="fade-up"].animate-in p {
  animation: fadeInUp 0.5s ease-out 0.1s forwards;
  opacity: 0;
}

/* 数字计数动画 */
@keyframes countUp {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.stat-value[data-count].animate-in {
  animation: countUp 0.5s ease-out forwards;
}