/* ============================================================
   上海欧力雅实业有限公司 - 企业官网样式
   主色：红色 #c0392b / 白色 #ffffff / 深灰 #2c3e50
   ============================================================ */

/* ---- CSS 自定义变量（可由主题面板动态修改） ---- */
:root {
  /* 深灰商务默认主题 */
  --primary: #2c3e50;
  --primary-rgb: 44, 62, 80;
  --primary-dark: #1a252f;
  --primary-light: #34495e;
  --secondary: #34495e;
  --accent: #e67e22;
  --white: #ffffff;
  --bg: #ffffff;
  --bg-light: #f8f9fa;
  --bg-dark: #1a252f;
  --text-dark: #1a1a2e;
  --text-mid: #555;
  --text-light: #888;
  --border: #e0e0e0;
  --shadow: 0 4px 20px rgba(0,0,0,0.10);
  --shadow-lg: 0 8px 40px rgba(0,0,0,0.15);
  --radius: 8px;
  --radius-lg: 16px;
  --font-size: 16px;
  --transition: all 0.3s ease;
  /* === 头部可调参数（由管理后台控制）== */
  --header-bg: #2c3e50;
  --header-bg-rgb: 44, 62, 80;
  /* 导航栏使用与顶栏一致的背景（统一颜色） */
  --nav-bg: var(--header-bg);
  --nav-bg-rgb: var(--header-bg-rgb);
  --nav-bg-opacity: var(--header-opacity);
  --header-opacity: 0.97;
  --header-text: #ffffff;
  --header-topbar-h: 38px;
  --header-navrow-h: 70px;
  --header-font-size: 0.82rem;
  --header-nav-size: 0.92rem;
  --logo-size: 48px;
  /* === 蒙板可调参数 == */
  --overlay-bg: #2c3e50;
  --overlay-bg-rgb: 44, 62, 80;
  --overlay-opacity: 0.72;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: var(--font-size); }
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background: var(--bg);
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; transition: var(--transition); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; }

/* ============================================================
   头部（合并顶栏 + 导航栏）
   ============================================================ */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  /* 统一背景层（颜色和透明度可调） */
  background: rgba(var(--header-bg-rgb), var(--header-opacity));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 20px rgba(0,0,0,0.10);
  transition: var(--transition);
}
.header.scrolled { box-shadow: 0 4px 30px rgba(0,0,0,0.15); }

/* 第一行：顶栏（联系信息 + 语言切换）- 透明背景 */
.header-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-topbar-h);
  font-size: var(--header-font-size);
  color: var(--header-text);
  padding: 0 24px;
  /* 透明背景，继承header的背景 */
}
.header-contact { display: flex; gap: 24px; align-items: flex-start; padding-top: 3px; }
.contact-item {
  display: flex; align-items: center; gap: 6px;
  opacity: 0.9;
  line-height: 1;
  margin-top: 16px;
}
.header-actions { display: flex; align-items: center; gap: 12px; }

/* 第二行：Logo + 导航 - 透明背景 */
.header-navrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-navrow-h);
  padding: 0 24px;
  /* 透明背景，继承header的背景 */
}

/* Logo */
.logo a { display: flex; align-items: center; gap: 10px; }
.logo img { height: var(--logo-size); width: auto; object-fit: contain; }
.logo-text { display: flex; flex-direction: column; }
.logo-name { font-size: 1.1rem; font-weight: 700; color: var(--header-text); }
.logo-sub { font-size: 0.72rem; color: rgba(255,255,255,0.7); }

/* 导航链接 */
.nav {
  display: flex;
  gap: 4px;
  background: inherit;
  padding: 0 8px;
  margin: 0 -8px;
}
.nav-link {
  padding: 8px 16px;
  font-size: var(--header-nav-size);
  font-weight: 500;
  color: var(--header-text);
  border-radius: var(--radius);
  position: relative;
  transition: var(--transition);
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 4px; left: 50%;
  width: 0; height: 2px;
  background: var(--header-text);
  transform: translateX(-50%);
  transition: width 0.3s;
  border-radius: 2px;
}
.nav-link:hover::after, .nav-link.active::after { width: 60%; }
.nav-link:hover, .nav-link.active { opacity: 0.7; }

.nav-actions { display: flex; align-items: center; gap: 8px; }
.search-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  color: var(--header-text);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.25);
}
.search-btn:hover { background: rgba(255,255,255,0.3); }
.hamburger {
  display: none;
  width: 38px; height: 38px;
  border-radius: 6px;
  background: rgba(255,255,255,0.15);
  color: var(--header-text);
  align-items: center; justify-content: center;
  font-size: 1.1rem;
  border: 1px solid rgba(255,255,255,0.25);
}

/* 语言切换 */
.lang-switch { display: flex; gap: 4px; }
.lang-btn {
  background: rgba(255,255,255,0.15);
  color: var(--header-text);
  padding: 3px 10px;
  border-radius: 4px;
  font-size: 0.78rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex; align-items: center; gap: 4px;
  border: 1px solid rgba(255,255,255,0.2);
}
.lang-btn:hover, .lang-btn.active {
  background: rgba(255,255,255,0.30);
  border-color: rgba(255,255,255,0.5);
}
.lang-btn img { width: 16px; height: 11px; border-radius: 2px; }

/* 主题按钮 */
.theme-toggle-btn {
  background: rgba(255,255,255,0.15);
  color: var(--header-text);
  width: 28px; height: 28px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.2);
}
.theme-toggle-btn:hover { background: rgba(255,255,255,0.3); transform: rotate(20deg); }

/* 搜索栏 */
.search-bar {
  display: none;
  padding: 12px 0;
  background: white;
  border-top: 1px solid var(--border);
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  position: relative;
}
.search-bar.open { display: block; }
.search-bar .container { display: flex; gap: 8px; align-items: center; }
#searchInput {
  flex: 1;
  padding: 10px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition);
}
#searchInput:focus { border-color: var(--primary); }
#searchSubmit, #searchClose {
  padding: 10px 18px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  transition: var(--transition);
}
#searchSubmit { background: var(--primary); color: white; }
#searchSubmit:hover { background: var(--primary-dark); }
#searchClose { background: var(--bg-light); color: var(--text-mid); }
.search-results {
  max-height: 300px;
  overflow-y: auto;
  padding: 0 0 8px;
}
.search-result-item {
  padding: 10px 16px;
  cursor: pointer;
  display: flex; align-items: center; gap: 10px;
  transition: var(--transition);
}
.search-result-item:hover { background: var(--bg-light); }
.search-result-item i { color: var(--primary); }

/* ============================================================
   进度条
   ============================================================ */
.progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  width: 0%;
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ============================================================
   快速导航
   ============================================================ */
.quick-nav {
  position: fixed;
  right: 24px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 800;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.quick-nav.visible { opacity: 1; pointer-events: all; }
.qn-btn {
  position: relative;
  width: 48px; height: 52px;
  border-radius: 10px;
  background: white;
  color: var(--text-mid);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.12);
  font-size: 0.85rem;
  transition: var(--transition);
  border: 2px solid transparent;
}
.qn-btn .fas { font-size: 1rem; }
.qn-text {
  font-size: 0.65rem;
  font-weight: 500;
  line-height: 1;
}
.qn-btn:hover, .qn-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: scale(1.08);
}
#backToTop {
  background: var(--primary);
  color: white;
}
#backToTop:hover {
  background: var(--primary-dark);
}

/* ============================================================
   主题面板
   ============================================================ */
.theme-panel {
  position: fixed;
  right: -320px;
  top: 50%;
  transform: translateY(-50%);
  width: 280px;
  background: white;
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  z-index: 1200;
  transition: right 0.4s ease;
}
.theme-panel.open { right: 0; }
.theme-panel h3 {
  font-size: 1rem; color: var(--primary);
  margin-bottom: 20px; display: flex; align-items: center; gap: 8px;
}
.theme-item {
  margin-bottom: 16px;
  display: flex; align-items: center; gap: 12px;
  flex-wrap: wrap;
}
.theme-item label { font-size: 0.85rem; color: var(--text-mid); min-width: 80px; }
.theme-item input[type=color] {
  width: 36px; height: 36px; border: 2px solid var(--border);
  border-radius: 6px; cursor: pointer; padding: 2px;
}
.theme-item input[type=range] { flex: 1; accent-color: var(--primary); }
.theme-item span { font-size: 0.8rem; color: var(--text-mid); min-width: 36px; }
.theme-actions { display: flex; gap: 10px; margin-top: 20px; }
.theme-actions button {
  flex: 1; padding: 10px; border-radius: var(--radius);
  font-size: 0.85rem; font-weight: 600; transition: var(--transition);
}
#resetTheme { background: var(--bg-light); color: var(--text-mid); }
#resetTheme:hover { background: var(--border); }
#saveTheme { background: var(--primary); color: white; }
#saveTheme:hover { background: var(--primary-dark); }

/* ============================================================
   通用容器与Section
   ============================================================ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.section { padding: 80px 0; }
.section-header {
  text-align: center;
  margin-bottom: 56px;
}
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--primary);
  background: rgba(192,57,43,0.08);
  padding: 4px 14px;
  border-radius: 30px;
  margin-bottom: 12px;
  text-transform: uppercase;
}
.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 14px;
  line-height: 1.2;
}
.section-title::after {
  content: '';
  display: block;
  width: 56px; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  margin: 14px auto 0;
}
.section-desc { font-size: 1rem; color: var(--text-mid); max-width: 560px; margin: 0 auto; }

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 30px;
  border-radius: 30px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(192,57,43,0.35);
}
.btn-outline {
  background: transparent;
  color: white;
  border-color: rgba(255,255,255,0.7);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.15);
  border-color: white;
  transform: translateY(-2px);
}

/* ============================================================
   英雄区 Hero
   ============================================================ */
.hero-section { padding: 0; position: relative; overflow: hidden; height: 100vh; min-height: 600px; }
.hero-slider { position: relative; width: 100%; height: 100%; }
.hero-slide {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.hero-slide.active { opacity: 1; z-index: 2; }
.hero-video, .hero-img {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero-overlay {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(var(--overlay-bg-rgb), var(--overlay-opacity));
  z-index: 1;
}
.hero-content {
  position: relative; z-index: 3;
  height: 100%;
  display: flex; flex-direction: column;
  align-items: flex-start; justify-content: center;
  padding: 0 min(24px, calc((100vw - 1200px) / 2 + 24px));
  padding-top: 40px;
  color: white;
  width: min(800px, 100%);
  max-width: 100%;
}
.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.4);
  padding: 6px 18px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-bottom: 20px;
  backdrop-filter: blur(4px);
}
.hero-title {
  font-size: 3rem;
  font-weight: 900;
  line-height: 1.15;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
  white-space: nowrap;
}
.hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.92;
  margin-bottom: 32px;
  font-weight: 400;
}
.hero-stats {
  display: flex; gap: 36px;
  margin-bottom: 36px;
}
.stat-item {
  display: flex; flex-direction: column;
  align-items: center;
}
.stat-num {
  font-size: 2.4rem;
  font-weight: 900;
  color: white;
  line-height: 1;
}
.stat-label {
  font-size: 0.82rem;
  opacity: 0.85;
  margin-top: 4px;
}
.hero-btns { display: flex; gap: 16px; flex-wrap: wrap; }

/* 幻灯片控制 */
.slider-controls {
  position: absolute; bottom: 36px; left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex; align-items: center; gap: 20px;
}
.slider-prev, .slider-next {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: rgba(255,255,255,0.25);
  color: white;
  border: 2px solid rgba(255,255,255,0.5);
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
  backdrop-filter: blur(4px);
}
.slider-prev:hover, .slider-next:hover {
  background: var(--primary); border-color: var(--primary);
  transform: scale(1.08);
}
.slider-dots { display: flex; gap: 8px; }
.dot {
  width: 10px; height: 10px;
  border-radius: 5px;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: all 0.3s;
}
.dot.active { background: white; width: 28px; }

/* ============================================================
   亮点条
   ============================================================ */
.highlights-bar {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  padding: 22px 0;
}
.highlights-bar .container {
  display: flex; justify-content: space-around; flex-wrap: wrap; gap: 16px;
}
.highlight-item {
  display: flex; align-items: center; gap: 14px;
  color: white;
  padding: 8px 20px;
}
.highlight-item i {
  font-size: 1.6rem; opacity: 0.9;
}
.highlight-item div {
  display: flex; flex-direction: column;
}
.highlight-item strong {
  font-size: 0.95rem; font-weight: 700;
}
.highlight-item span { font-size: 0.78rem; opacity: 0.82; }

/* ============================================================
   产品中心
   ============================================================ */
.products-section { background: var(--bg-light); }

.product-filter {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 10px;
  margin-bottom: 40px;
}
.filter-btn {
  padding: 9px 24px;
  border-radius: 30px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-mid);
  background: white;
  border: 2px solid var(--border);
  transition: var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(192,57,43,0.3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}
.product-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}
.product-card.hidden { display: none; }
.product-img-wrap {
  position: relative;
  overflow: hidden;
  height: 200px;
  background: #f5f5f5;
  cursor: pointer;
}
.product-img-wrap img {
  width: 100%;
  height: 100%;
  /* 填充容器并保持比例，超出部分裁剪 */
  object-fit: cover;
  object-position: center;
  transition: transform 0.3s ease;
  background: #f5f5f5;
}
.product-card:hover .product-img-wrap img { 
  transform: scale(1.05);
}
.product-overlay {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(192,57,43,0.7);
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transition: var(--transition);
}
.product-card:hover .product-overlay { opacity: 1; }
.product-img-wrap .zoom-hint {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.6);
  color: white;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 11px;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.product-img-wrap:hover .zoom-hint { opacity: 1; }

/* 产品详情弹窗图片 */
.product-modal-img-wrap {
  position: relative;
  cursor: zoom-in;
  overflow: hidden;
  border-radius: 8px 8px 0 0;
  background: #f5f5f5;
}
.product-modal-img-wrap img {
  display: block;
  transition: transform 0.3s;
}
.product-modal-img-wrap:hover img {
  transform: scale(1.02);
}
.zoom-overlay-hint {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.5));
  color: white;
  padding: 30px 16px 12px;
  font-size: 13px;
  text-align: center;
  opacity: 0;
  transition: opacity 0.3s;
}
.product-modal-img-wrap:hover .zoom-overlay-hint { opacity: 1; }
.btn-view {
  padding: 10px 24px;
  border-radius: 30px;
  background: white;
  color: var(--primary);
  font-size: 0.88rem;
  font-weight: 700;
  border: 2px solid white;
  transition: var(--transition);
}
.btn-view:hover { background: var(--primary); color: white; }
.product-info { padding: 18px; }
.product-info h3 { font-size: 1rem; font-weight: 700; margin-bottom: 8px; color: var(--text-dark); }
.product-info p { font-size: 0.85rem; color: var(--text-mid); margin-bottom: 12px; }
.product-tags { display: flex; gap: 6px; flex-wrap: wrap; }
.product-tags span {
  font-size: 0.73rem;
  padding: 3px 10px;
  border-radius: 30px;
  background: rgba(192,57,43,0.08);
  color: var(--primary);
  font-weight: 600;
}

/* ============================================================
   生产工艺
   ============================================================ */
.process-section { background: white; }

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.adv-card {
  text-align: center;
  padding: 36px 24px;
  background: var(--bg-light);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  border: 2px solid transparent;
  position: relative;
  overflow: hidden;
}
.adv-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 100%; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s;
}
.adv-card:hover::before { transform: scaleX(1); }
.adv-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(192,57,43,0.15);
}
.adv-icon {
  width: 64px; height: 64px;
  margin: 0 auto 20px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: 1.6rem;
  box-shadow: 0 6px 20px rgba(192,57,43,0.35);
}
.adv-card h3 { font-size: 1.2rem; font-weight: 800; color: var(--primary); margin-bottom: 12px; }
.adv-card p { font-size: 0.87rem; color: var(--text-mid); }

/* 时间轴 */
.timeline-title {
  font-size: 1.4rem; font-weight: 800;
  color: var(--text-dark);
  margin-bottom: 40px;
  text-align: center;
}
.timeline {
  position: relative;
  padding-left: 48px;
}
.timeline::before {
  content: '';
  position: absolute; left: 20px; top: 0; bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary), var(--primary-light), var(--accent));
  border-radius: 3px;
}
.timeline-item {
  position: relative;
  margin-bottom: 40px;
}
.timeline-icon {
  position: absolute;
  left: -40px;
  width: 40px; height: 40px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white;
  font-size: 0.9rem;
  box-shadow: 0 4px 12px rgba(192,57,43,0.3);
  flex-shrink: 0;
}
/* 文字+媒体横向排列容器 */
.timeline-body {
  display: flex;
  gap: 24px;
  align-items: flex-start;
  background: var(--bg-light);
  border-radius: var(--radius);
  padding: 20px 24px;
  transition: var(--transition);
}
.timeline-body:hover {
  box-shadow: var(--shadow);
  transform: translateX(4px);
}
.timeline-content {
  flex: 1;
  min-width: 0;
}
.timeline-content h4 { font-size: 1.05rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
.timeline-content p { font-size: 0.87rem; color: var(--text-mid); line-height: 1.6; }
.timeline-media { flex-shrink: 0; width: 320px; height: 180px; border-radius: var(--radius); overflow: hidden; }
.timeline-media img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); display: block; }
.timeline-media video { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius); display: block; }

@media (max-width: 900px) {
  .timeline-body { flex-direction: column; }
  .timeline-media { width: 100%; }
  .timeline-media img { height: 200px; }
}

/* 视频展示 */
.video-gallery { margin-top: 60px; }
.video-gallery h3 {
  font-size: 1.4rem; font-weight: 800;
  color: var(--text-dark); margin-bottom: 28px; text-align: center;
}
.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.video-item {
  position: relative; border-radius: var(--radius); overflow: hidden;
  background: var(--bg-dark);
}
.video-item video {
  width: 100%; height: 240px; object-fit: cover; display: block;
}
.video-item span {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,0.7));
  color: white; padding: 12px 16px;
  font-size: 0.88rem; font-weight: 600;
}

/* ============================================================
   关于我们
   ============================================================ */
.about-section { background: var(--bg-light); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  margin-bottom: 64px;
}
.about-text h3 {
  font-size: 1.6rem; font-weight: 800;
  color: var(--primary);
  margin-bottom: 18px;
}
.about-text p {
  font-size: 0.93rem; color: var(--text-mid);
  margin-bottom: 16px; line-height: 1.8;
}
.about-values {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px;
  margin: 24px 0;
}
.value-item {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 16px;
  background: white;
  border-radius: var(--radius);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
  font-size: 0.9rem; font-weight: 600; color: var(--text-dark);
  transition: var(--transition);
}
.value-item:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.value-item i { color: var(--primary); font-size: 1rem; }
.erp-badge {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 20px;
  background: linear-gradient(135deg, rgba(192,57,43,0.08), rgba(231,76,60,0.06));
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.88rem; color: var(--text-dark); font-weight: 500;
  margin-top: 16px;
}
.erp-badge i { color: var(--primary); font-size: 1.1rem; }

.about-imgs { display: flex; flex-direction: column; gap: 12px; }
.about-img-main { border-radius: var(--radius-lg); overflow: hidden; height: 280px; }
.about-img-main img { width: 100%; height: 100%; object-fit: cover; }
.about-img-small { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.about-img-small img { border-radius: var(--radius); height: 140px; width: 100%; object-fit: cover; }

/* 荣誉资质 */
.honors-section { padding-top: 40px; border-top: 2px dashed var(--border); }
.honors-section h3 {
  font-size: 1.5rem; font-weight: 800;
  color: var(--text-dark); margin-bottom: 10px; text-align: center;
}
.honors-desc {
  text-align: center; color: var(--text-mid);
  font-size: 0.92rem; margin-bottom: 32px;
}
.honors-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}
.honor-card {
  text-align: center;
  padding: 24px 12px;
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.honor-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-top: 3px solid var(--primary);
}
.honor-icon {
  width: 52px; height: 52px; margin: 0 auto 12px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1.2rem;
}
.honor-card h4 { font-size: 0.82rem; font-weight: 700; color: var(--text-dark); }

.honor-videos {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px;
}
.honor-video-item {
  border-radius: var(--radius); overflow: hidden;
  background: var(--bg-dark); position: relative;
}
.honor-video-item video { width: 100%; height: 200px; object-fit: cover; }
.honor-video-item span {
  display: block; background: rgba(0,0,0,0.6);
  color: white; padding: 8px 14px;
  font-size: 0.85rem; font-weight: 600;
}

/* ============================================================
   应用场景
   ============================================================ */
.applications-section { background: var(--bg-dark); color: white; }
.applications-section .section-title { color: white; }
.applications-section .section-title::after {
  background: linear-gradient(90deg, var(--accent), var(--primary));
}
.applications-section .section-desc { color: rgba(255,255,255,0.75); }
.applications-section .section-tag {
  color: var(--accent);
  background: rgba(243,156,18,0.15);
}
.app-video-wrap {
  border-radius: var(--radius-lg); overflow: hidden;
  margin-bottom: 40px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.app-video { width: 100%; height: 400px; object-fit: cover; display: block; }
.app-icons {
  display: flex; justify-content: center; flex-wrap: wrap; gap: 20px;
}
.app-icon-item {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  padding: 20px 28px;
  background: rgba(255,255,255,0.08);
  border-radius: var(--radius);
  border: 1px solid rgba(255,255,255,0.12);
  transition: var(--transition);
  min-width: 110px;
}
.app-icon-item:hover {
  background: rgba(192,57,43,0.3);
  border-color: rgba(192,57,43,0.5);
  transform: translateY(-4px);
}
.app-icon-item i { font-size: 1.8rem; color: var(--accent); }
.app-icon-item span { font-size: 0.88rem; color: rgba(255,255,255,0.9); font-weight: 500; }

/* ============================================================
   新闻动态
   ============================================================ */
.news-section { background: white; }
.news-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 24px;
}
.news-card {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  background: white;
  transition: var(--transition);
  display: flex; flex-direction: column;
}
.news-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.news-img { position: relative; overflow: hidden; height: 200px; }
.news-card.featured .news-img { height: 260px; }
.news-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s; }
.news-card:hover .news-img img { transform: scale(1.05); }
.news-badge {
  position: absolute; top: 14px; left: 14px;
  background: var(--primary); color: white;
  padding: 4px 12px; border-radius: 30px;
  font-size: 0.75rem; font-weight: 700;
}
.news-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.news-date { font-size: 0.78rem; color: var(--text-light); margin-bottom: 10px; display: block; }
.news-body h3 { font-size: 1rem; font-weight: 700; color: var(--text-dark); margin-bottom: 10px; line-height: 1.5; }
.news-body p { font-size: 0.85rem; color: var(--text-mid); line-height: 1.7; flex: 1; margin-bottom: 16px; }
.news-more {
  display: inline-flex; align-items: center;
  color: var(--primary); font-size: 0.88rem; font-weight: 700;
  transition: var(--transition);
}
.news-more:hover { color: var(--primary-dark); letter-spacing: 0.02em; }

/* ============================================================
   联系我们
   ============================================================ */
.contact-section { background: var(--bg-light); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 40px;
}
.contact-item {
  display: flex; gap: 16px; align-items: flex-start;
  margin-bottom: 24px;
}
.contact-icon {
  width: 46px; height: 46px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 1rem;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(192,57,43,0.25);
}
.contact-item h4 { font-size: 0.88rem; font-weight: 700; color: var(--text-mid); margin-bottom: 4px; }
.contact-item p { font-size: 0.9rem; color: var(--text-dark); }
.contact-item a { color: var(--primary); }
.contact-item a:hover { text-decoration: underline; }

/* 表单 */
.contact-form { background: white; padding: 36px; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.contact-form h3 { font-size: 1.3rem; font-weight: 800; color: var(--text-dark); margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block; font-size: 0.85rem; font-weight: 600;
  color: var(--text-mid); margin-bottom: 6px;
}
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  padding: 11px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--text-dark);
  background: var(--bg-light);
  transition: var(--transition);
  outline: none;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--primary);
  background: white;
  box-shadow: 0 0 0 3px rgba(192,57,43,0.08);
}
.btn-submit { width: 100%; justify-content: center; border-radius: var(--radius); font-size: 1rem; }
.form-success {
  display: none;
  text-align: center; padding: 24px;
  color: #27ae60; font-size: 1rem; font-weight: 600;
}
.form-success i { font-size: 2rem; display: block; margin-bottom: 10px; }

/* 地图 */
.map-container {
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow);
  border: 3px solid white;
}

/* ============================================================
   页脚
   ============================================================ */
.footer { background: var(--bg-dark); color: rgba(255,255,255,0.8); }
.footer-top { padding: 56px 0 40px; }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
}
.footer-brand {}
.footer-logo { height: 52px; width: auto; margin-bottom: 14px; filter: brightness(0) invert(1); }
.footer-brand p { font-size: 0.88rem; opacity: 0.75; margin-bottom: 20px; }
.footer-social { display: flex; gap: 12px; }
.footer-social a {
  width: 38px; height: 38px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.7);
  font-size: 1rem;
  transition: var(--transition);
  border: 1px solid rgba(255,255,255,0.15);
}
.footer-social a:hover { background: var(--primary); color: white; border-color: var(--primary); transform: translateY(-2px); }
.footer-col h4 {
  font-size: 0.95rem; font-weight: 700;
  color: white; margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary);
  display: inline-block;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a {
  font-size: 0.87rem; color: rgba(255,255,255,0.65);
  transition: var(--transition);
  display: flex; align-items: center; gap: 6px;
}
.footer-col ul a:hover { color: white; padding-left: 4px; }
.footer-col p {
  display: flex; align-items: flex-start; gap: 10px;
  font-size: 0.87rem; color: rgba(255,255,255,0.65);
  margin-bottom: 10px;
}
.footer-col p i { color: var(--primary); margin-top: 2px; flex-shrink: 0; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 18px 0;
  text-align: center;
}
.footer-bottom p { font-size: 0.82rem; opacity: 0.55; }

/* ============================================================
   弹窗
   ============================================================ */
.modal {
  display: none;
  position: fixed; top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 2000;
  align-items: center; justify-content: center;
}
.modal.open { display: flex; }
.modal-overlay {
  position: absolute; top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
}
.modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-lg);
  max-width: 680px; width: 92%;
  max-height: 85vh;
  overflow-y: auto;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(0,0,0,0.25);
  animation: modalIn 0.35s ease;
}
@keyframes modalIn {
  from { opacity: 0; transform: scale(0.92) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px;
  background: var(--bg-light); border-radius: 50%;
  color: var(--text-mid); font-size: 0.9rem;
  display: flex; align-items: center; justify-content: center;
  z-index: 2; transition: var(--transition);
}
.modal-close:hover { background: var(--primary); color: white; }
.modal-body { padding: 32px; }

/* ============================================================
   Cookie 提示
   ============================================================ */
.cookie-bar {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--bg-dark);
  color: rgba(255,255,255,0.85);
  padding: 14px 24px;
  display: flex; align-items: center; justify-content: center; gap: 20px;
  z-index: 1500;
  font-size: 0.85rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  transform: translateY(100%);
  transition: transform 0.4s;
}
.cookie-bar.show { transform: translateY(0); }
#acceptCookie {
  background: var(--primary); color: white;
  padding: 8px 22px; border-radius: 30px;
  font-size: 0.85rem; font-weight: 700;
  transition: var(--transition);
}
#acceptCookie:hover { background: var(--primary-dark); }

/* ============================================================
   统计面板
   ============================================================ */
.stats-panel {
  position: fixed;
  bottom: 24px; left: 50%;
  transform: translateX(-50%);
  background: white;
  border-radius: var(--radius-lg);
  padding: 24px 32px;
  box-shadow: var(--shadow-lg);
  z-index: 1800;
  min-width: 480px;
  border-top: 4px solid var(--primary);
}
.stats-panel h3 {
  font-size: 1rem; font-weight: 700; color: var(--primary);
  margin-bottom: 16px; display: flex; align-items: center; gap: 8px;
}
.stats-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px;
}
.stat-box { text-align: center; }
.stat-box .stat-label { display: block; font-size: 0.78rem; color: var(--text-mid); margin-bottom: 6px; }
.stat-box .stat-value { display: block; font-size: 1.8rem; font-weight: 800; color: var(--primary); }
#closeStats {
  position: absolute; top: 12px; right: 12px;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--bg-light); color: var(--text-mid);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem; transition: var(--transition);
}
#closeStats:hover { background: var(--primary); color: white; }

/* ============================================================
   动画
   ============================================================ */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-left {
  opacity: 0; transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-left.visible { opacity: 1; transform: translateX(0); }
.fade-right {
  opacity: 0; transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-right.visible { opacity: 1; transform: translateX(0); }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .advantages-grid { grid-template-columns: repeat(2, 1fr); }
  .honors-grid { grid-template-columns: repeat(3, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* 桌面端语言栏 */
.desktop-lang-switch { display: flex; }

/* 移动端语言栏（默认隐藏） */
.mobile-lang-bar {
  display: none;
  background: rgba(var(--header-bg-rgb), 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 8px 0;
}
.mobile-lang-switch {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}
.mobile-lang-switch .lang-btn {
  padding: 4px 10px;
  font-size: 0.75rem;
}
.mobile-lang-switch .lang-btn img {
  width: 16px;
  height: auto;
}

@media (max-width: 900px) {
  .header-topbar { display: none; }
  .desktop-lang-switch { display: none; }
  .mobile-lang-bar { display: block; }
  .header-navrow { height: 60px; }
  .nav { display: none; flex-direction: column; position: absolute; top: 120px; left: 0; right: 0; background: rgba(var(--header-bg-rgb), var(--header-opacity)); backdrop-filter: blur(10px); padding: 16px; box-shadow: var(--shadow); }
  .nav.mobile-open { display: flex; }
  .nav-link { padding: 14px 20px; border-radius: var(--radius); border-bottom: 1px solid rgba(255,255,255,0.15); }
  .hamburger { display: flex; }
  .hero-title { font-size: 2rem; }
  .hero-content { padding: 0 24px; }
  .about-grid { grid-template-columns: 1fr; }
  .news-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .advantages-grid { grid-template-columns: repeat(2,1fr); }
  .honor-videos { grid-template-columns: 1fr; }
  .video-grid { grid-template-columns: 1fr; }
  .stats-panel { min-width: auto; width: 90%; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 640px) {
  .header-contact { display: none; }
  .hero-section { height: 100svh; }
  .hero-title { font-size: 1.6rem; white-space: normal; }
  .hero-stats { gap: 20px; }
  .stat-num { font-size: 1.8rem; }
  .section { padding: 52px 0; }
  .section-title { font-size: 1.6rem; }
  .advantages-grid { grid-template-columns: 1fr; }
  .honors-grid { grid-template-columns: repeat(2,1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .products-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .quick-nav { right: 12px; }
  .qn-btn { width: 38px; height: 38px; }
  .about-img-small { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .products-grid { grid-template-columns: 1fr; }
  .hero-btns { flex-direction: column; }
}

/* ============================================================
   大图查看器（带水印）
   ============================================================ */
.image-viewer-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.92);
  z-index: 3000;
  display: none;
  flex-direction: column;
}
.image-viewer-overlay.active { display: flex; }

.image-viewer-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 20px;
  background: rgba(0,0,0,0.5);
  color: white;
}
.image-viewer-title {
  font-size: 14px;
  font-weight: 600;
}
.image-viewer-controls {
  display: flex;
  gap: 8px;
  align-items: center;
}
.image-viewer-controls button {
  background: rgba(255,255,255,0.15);
  border: none;
  color: white;
  width: 36px; height: 36px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
  transition: background 0.2s;
}
.image-viewer-controls button:hover { background: rgba(255,255,255,0.3); }
.zoom-level {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  min-width: 50px;
  text-align: center;
}

.image-viewer-container {
  flex: 1;
  overflow: hidden;
  position: relative;
  cursor: grab;
}
.image-viewer-container:active { cursor: grabbing; }

.image-viewer-wrapper {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.image-viewer-content {
  position: relative;
  transform-origin: center center;
  transition: transform 0.1s ease-out;
}
.image-viewer-content img {
  display: block;
  max-width: none;
  user-select: none;
  -webkit-user-drag: none;
}

/* 水印样式 */
.watermark-container {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  pointer-events: none;
  overflow: hidden;
}
.watermark-text {
  position: absolute;
  font-size: 14px;
  font-weight: bold;
  color: rgba(192,57,43,0.15);
  transform: rotate(-30deg);
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
}
.watermark-logo {
  position: absolute;
  opacity: 0.12;
  pointer-events: none;
}

.image-viewer-footer {
  padding: 10px 20px;
  background: rgba(0,0,0,0.5);
  color: rgba(255,255,255,0.6);
  font-size: 12px;
  text-align: center;
}

/* 缩放动画 */
@keyframes zoomPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.02); }
}