/* ============================================
   恒锐智造 - 企业官网设计系统
   现代简约风格 | 制造业/工业
   ============================================ */

/* === 设计令牌 === */
:root {
  /* 主色系 - 深蓝传达工业可靠感 */
  --color-primary: #1a365d;
  --color-primary-light: #2a4a7f;
  --color-primary-dark: #0f2440;
  
  /* 点缀色 - 工业橙传递活力与精密感 */
  --color-accent: #e67e22;
  --color-accent-light: #f39c4a;
  --color-accent-dark: #c0660f;
  
  /* 中性色 */
  --color-text: #1a1a2e;
  --color-text-light: #555;
  --color-text-muted: #888;
  --color-bg: #ffffff;
  --color-bg-alt: #f5f7fa;
  --color-bg-dark: #0f2440;
  --color-border: #e0e5ec;
  
  /* 功能色 */
  --color-success: #27ae60;
  --color-warning: #f39c12;
  --color-error: #e74c3c;
  
  /* 排版 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;
  
  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.12);
  --shadow-xl: 0 24px 48px rgba(0,0,0,0.16);
  
  /* 过渡 */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
  
  /* 布局 */
  --container-max: 1200px;
  --header-height: 72px;
  
  /* 渐变 */
  --gradient-primary: linear-gradient(135deg, #1a365d 0%, #2a4a7f 100%);
  --gradient-accent: linear-gradient(135deg, #e67e22 0%, #f39c4a 100%);
  --gradient-dark: linear-gradient(135deg, #0f2440 0%, #1a365d 100%);
  --gradient-hero: linear-gradient(135deg, #0f2440 0%, #1a365d 40%, #2a4a7f 100%);
}

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

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

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === 容器 === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* === 排版 === */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; }

p {
  color: var(--color-text-light);
  line-height: 1.8;
}

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

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

ul {
  list-style: none;
}

/* === 区块 === */
.section {
  padding: var(--space-2xl) 0;
}

.section--alt {
  background: var(--color-bg-alt);
}

.section--dark {
  background: var(--color-bg-alt);
  color: var(--color-text);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--color-text);
}

.section--dark p {
  color: var(--color-text-light);
}

/* === 章节标题 === */
.section-header {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-xl);
}

.section-header__eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.section-header__title {
  margin-bottom: var(--space-sm);
}

.section-header__desc {
  font-size: 1.0625rem;
  color: var(--color-text-light);
}

.section--dark .section-header__desc {
  color: rgba(255,255,255,0.7);
}

/* === 按钮 === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.btn--secondary {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn--secondary:hover {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.btn--ghost {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-primary);
  background: var(--color-primary);
  color: #fff;
}

.btn--lg {
  padding: 1rem 2.5rem;
  font-size: 1rem;
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.8125rem;
}

/* === 导航栏 === */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 1000;
  transition: var(--transition);
}

.header--scrolled {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-primary);
}

.logo__icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.125rem;
}

.logo__image {
  height: 40px;
  width: auto;
  display: block;
  border-radius: var(--radius-sm);
}

.logo__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.logo__sub {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  position: relative;
}

.nav__link:hover {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

.nav__link--active {
  color: var(--color-primary);
}

.nav__link--active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 24px;
  height: 3px;
  background: var(--color-accent);
  border-radius: var(--radius-full);
}

.nav__cta {
  margin-left: 0.5rem;
}

/* 语言切换器（右上角） */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 0.75rem;
  font-size: 0.8125rem;
  font-weight: 600;
  white-space: nowrap;
}
.lang-switch__item {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.2rem 0.35rem;
  border-radius: 6px;
  transition: var(--transition);
}
.lang-switch__item:hover {
  color: var(--color-text);
  background: var(--color-bg-alt);
}
.lang-switch__item.is-active {
  color: #fff;
  background: var(--color-primary);
}
.lang-switch__sep {
  color: var(--color-border);
}
.lang-switch--mobile {
  margin: 0.75rem 0 0;
  justify-content: center;
}

/* 移动端菜单按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
  background: none;
  border: none;
  cursor: pointer;
}

.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

.menu-toggle--open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle--open span:nth-child(2) {
  opacity: 0;
}

.menu-toggle--open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* === Hero区 === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #eef2f8 0%, #f6f9fc 55%, #ffffff 100%);
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.15;
  background-image: 
    repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(26,54,93,0.04) 40px, rgba(26,54,93,0.04) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(26,54,93,0.04) 40px, rgba(26,54,93,0.04) 41px);
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 360px;
  padding: var(--space-2xl) 0;
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  background: rgba(230, 126, 34, 0.15);
  border: 1px solid rgba(230, 126, 34, 0.3);
  border-radius: var(--radius-full);
  color: var(--color-accent-dark);
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.hero__badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero__title {
  color: var(--color-text);
  font-size: 3.5rem;
  line-height: 1.15;
  margin-bottom: var(--space-md);
  font-weight: 800;
}

.hero__title--accent {
  color: var(--color-accent);
}

.hero__desc {
  color: var(--color-text-light);
  font-size: 1.125rem;
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}

.hero__actions {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.hero__stats {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  border-top: 1px solid var(--color-border);
  background: rgba(26,54,93,0.04);
}

.hero__stats-inner {
  display: flex;
  align-items: center;
  justify-content: space-around;
  padding: var(--space-md) 0;
}

.hero__stat {
  text-align: center;
}

.hero__stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.hero__stat-num span {
  color: var(--color-accent);
  font-size: 1.5rem;
}

.hero__stat-label {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* === 卡片 === */
.card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.card--hover:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}

.card__body {
  padding: var(--space-lg);
}

/* === 服务/业务卡片 === */
.service-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: var(--transition);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.service-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}

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

.service-card__icon {
  width: 56px;
  height: 56px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: var(--space-md);
  transition: var(--transition);
}

.service-card:hover .service-card__icon {
  background: var(--gradient-primary);
}

.service-card__title {
  font-size: 1.25rem;
  margin-bottom: var(--space-xs);
}

.service-card__desc {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.service-card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: var(--transition-fast);
}

.service-card__link:hover {
  gap: 0.5rem;
  color: var(--color-accent-dark);
}

/* === 网格 === */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* === 数据亮点 === */
.stat-block {
  text-align: center;
  padding: var(--space-lg);
}

.stat-block__num {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
}

.stat-block__num span {
  color: var(--color-accent);
  font-size: 1.75rem;
}

.stat-block__label {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin-top: 0.5rem;
}

/* === 页面Banner === */
.page-banner {
  background: linear-gradient(135deg, #eef2f8 0%, #f6f9fc 100%);
  color: var(--color-text);
  padding: calc(var(--header-height) + var(--space-2xl)) 0 var(--space-xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-banner__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.08;
  background-image: 
    repeating-linear-gradient(0deg, transparent, transparent 40px, rgba(26,54,93,0.04) 40px, rgba(26,54,93,0.04) 41px),
    repeating-linear-gradient(90deg, transparent, transparent 40px, rgba(26,54,93,0.04) 40px, rgba(26,54,93,0.04) 41px);
}

.page-banner__content {
  position: relative;
  z-index: 2;
}

.page-banner__title {
  color: var(--color-text);
  font-size: 2.75rem;
  margin-bottom: var(--space-sm);
}

.page-banner__desc {
  color: var(--color-text-light);
  font-size: 1.0625rem;
  max-width: 600px;
  margin: 0 auto;
}

/* 面包屑 */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  justify-content: center;
  margin-top: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.breadcrumb a {
  color: var(--color-text-muted);
}

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

.breadcrumb__sep {
  color: var(--color-border);
}

/* === 时间线 === */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: var(--space-xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.timeline__item {
  position: relative;
  padding-bottom: var(--space-xl);
}

.timeline__item:last-child {
  padding-bottom: 0;
}

.timeline__dot {
  position: absolute;
  left: -28px;
  top: 4px;
  width: 24px;
  height: 24px;
  background: var(--color-bg);
  border: 3px solid var(--color-accent);
  border-radius: 50%;
  z-index: 2;
}

.timeline__year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.timeline__title {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.timeline__desc {
  font-size: 0.9375rem;
}

/* === 价值卡片 === */
.value-card {
  text-align: center;
  padding: var(--space-lg);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.value-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.value-card__icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-md);
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  color: #fff;
}

.value-card__title {
  margin-bottom: var(--space-xs);
}

/* === 产品卡片 === */
.product-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.product-card__image {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 3rem;
  position: relative;
  overflow: hidden;
}

.product-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-dark);
  opacity: 0;
  transition: var(--transition);
}

.product-card:hover .product-card__image::after {
  opacity: 0.3;
}

.product-card__tag {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  z-index: 2;
  padding: 0.25rem 0.75rem;
  background: rgba(230, 126, 34, 0.9);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.product-card__body {
  padding: var(--space-md);
}

.product-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.product-card__desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-sm);
}

.product-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--color-border);
}

/* === 产品筛选 === */
.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
  margin-bottom: var(--space-xl);
}

.filter-btn {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-light);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.filter-btn--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* === 新闻卡片 === */
.news-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.news-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.news-card__image {
  width: 100%;
  aspect-ratio: 16/9;
  background: var(--color-bg-alt);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 3rem;
  position: relative;
}

.news-card__category {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  padding: 0.25rem 0.75rem;
  background: rgba(255,255,255,0.95);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.news-card__body {
  padding: var(--space-md);
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card__date {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-xs);
}

.news-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
  line-height: 1.4;
  transition: var(--transition-fast);
}

.news-card:hover .news-card__title {
  color: var(--color-accent);
}

.news-card__excerpt {
  font-size: 0.875rem;
  color: var(--color-text-light);
  flex: 1;
  margin-bottom: var(--space-sm);
}

.news-card__link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

/* === 新闻侧边栏 === */
.news-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-lg);
}

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

.sidebar-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}

.sidebar-card__title {
  font-size: 1.125rem;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.popular-item {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--color-border);
}

.popular-item:last-child {
  border-bottom: none;
}

.popular-item__num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-border);
  line-height: 1;
  min-width: 24px;
}

.popular-item__title {
  font-size: 0.875rem;
  line-height: 1.4;
  transition: var(--transition-fast);
}

.popular-item:hover .popular-item__title {
  color: var(--color-accent);
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.tag {
  padding: 0.25rem 0.875rem;
  font-size: 0.8125rem;
  color: var(--color-text-light);
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
  cursor: pointer;
}

.tag:hover {
  background: var(--color-primary);
  color: #fff;
}

/* === 联系表单 === */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact-info-card {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  color: var(--color-text);
}

.contact-info-card h3 {
  color: var(--color-text);
  margin-bottom: var(--space-lg);
}

.contact-info-item {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  align-items: flex-start;
}

.contact-info-item__icon {
  width: 40px;
  height: 40px;
  background: rgba(26,54,93,0.06);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.contact-info-item__label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.contact-info-item__value {
  font-size: 0.9375rem;
  color: var(--color-text);
}

/* 表单 */
.form-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-group__label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.form-group__label--required::after {
  content: ' *';
  color: var(--color-error);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  outline: none;
}

.form-control:focus {
  border-color: var(--color-primary);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

/* === 地图 === */
.map-placeholder {
  width: 100%;
  height: 400px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 1rem;
  position: relative;
  overflow: hidden;
}

.map-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    repeating-linear-gradient(0deg, transparent, transparent 30px, rgba(26,54,93,0.03) 30px, rgba(26,54,93,0.03) 31px),
    repeating-linear-gradient(90deg, transparent, transparent 30px, rgba(26,54,93,0.03) 30px, rgba(26,54,93,0.03) 31px);
}

/* === 合作伙伴 === */
.partner-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-lg);
}

.partner-logo {
  width: 160px;
  height: 80px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-weight: 700;
  font-size: 1.125rem;
  transition: var(--transition);
  opacity: 0.6;
}

.partner-logo:hover {
  opacity: 1;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* === CTA区块 === */
.cta-banner {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  color: var(--color-text);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: rgba(230, 126, 34, 0.1);
  border-radius: 50%;
}

.cta-banner__title {
  color: var(--color-text);
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  position: relative;
}

.cta-banner__desc {
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  position: relative;
}

.cta-banner__actions {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  position: relative;
}

/* === 分页 === */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.25rem;
  margin-top: var(--space-xl);
}

.pagination__btn {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-light);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.pagination__btn--active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

/* === 页脚 === */
.footer {
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0 var(--space-md);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.footer__brand {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.footer__desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 280px;
}

.footer__social {
  display: flex;
  gap: var(--space-xs);
}

.footer__social a {
  width: 36px;
  height: 36px;
  background: rgba(26,54,93,0.06);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--color-text-light);
  transition: var(--transition-fast);
}

.footer__social a:hover {
  background: var(--color-accent);
  color: #fff;
}

.footer__col-title {
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--color-text-light);
  transition: var(--transition-fast);
}

.footer__links a:hover {
  color: var(--color-accent-dark);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

.footer__bottom a {
  color: var(--color-text-muted);
}

.footer__bottom a:hover {
  color: var(--color-text);
}

/* === 回到顶部 === */
.back-to-top {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

.back-to-top--visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
}

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

.fade-in-up--visible {
  opacity: 1;
  transform: translateY(0);
}

/* === 响应式 === */
@media (max-width: 968px) {
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .news-layout { grid-template-columns: 1fr; }
  .contact-layout { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
  .hero__title { font-size: 2.5rem; }
  .hero__stats-inner { flex-wrap: wrap; gap: var(--space-md); }
  .hero__stat { flex: 1; min-width: 100px; }
}

@media (max-width: 768px) {
  :root {
    --space-2xl: 4rem;
    --space-xl: 2.5rem;
  }
  
  .nav, .nav__cta { display: none; }
  
  .menu-toggle { display: flex; }
  
  .nav--mobile {
    display: flex;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-md);
    gap: 0;
    box-shadow: var(--shadow-lg);
    border-top: 1px solid var(--color-border);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav--mobile--open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav--mobile .nav__link {
    padding: 0.875rem 1rem;
    border-radius: 0;
    border-bottom: 1px solid var(--color-border);
  }
  
  .nav--mobile .nav__link--active::after {
    display: none;
  }
  
  .grid--2, .grid--3, .grid--4 {
    grid-template-columns: 1fr;
  }
  
  .hero__title { font-size: 2rem; }
  .hero__desc { font-size: 1rem; }
  
  .section-header__title { font-size: 1.75rem; }
  
  .form-row { grid-template-columns: 1fr; }
  
  .footer__grid { grid-template-columns: 1fr; }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }
  
  .page-banner__title { font-size: 2rem; }
  
  .timeline { padding-left: var(--space-lg); }
  
  .contact-info-card,
  .form-card { padding: var(--space-md); }
}

/* === 微信二维码网格 === */
.wechat-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-lg);
}

.wechat-card {
  width: 200px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  text-align: center;
  transition: var(--transition);
}

.wechat-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.wechat-card__qr {
  width: 140px;
  height: 140px;
  margin: 0 auto var(--space-sm);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  overflow: hidden;
}

.wechat-card__name {
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
}

.wechat-card__desc {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* === 产品目录树 === */
.catalog-nav {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  position: sticky;
  top: calc(var(--header-height) + 1rem);
}

.catalog-nav__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--color-accent);
  display: inline-block;
}

.catalog-tree {
  list-style: none;
}

.catalog-tree ul {
  list-style: none;
  padding-left: var(--space-md);
  border-left: 1px solid var(--color-border);
  margin-left: 0.25rem;
}

.catalog-tree a {
  display: block;
  padding: 0.4rem 0.5rem;
  font-size: 0.875rem;
  color: var(--color-text-light);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
}

.catalog-tree a:hover {
  background: var(--color-bg-alt);
  color: var(--color-primary);
}

.catalog-tree a--active {
  background: var(--color-primary);
  color: #fff;
}

/* 产品详情 */
.product-detail__hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
  margin-bottom: var(--space-lg);
}

.product-detail__main-img {
  width: 100%;
  aspect-ratio: 4/3;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: 4rem;
  overflow: hidden;
}

.product-detail__photos {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-sm);
}

.product-detail__photo {
  aspect-ratio: 1;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
}

.spec-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: var(--space-sm);
}

.spec-table th,
.spec-table td {
  padding: 0.875rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.9375rem;
}

.spec-table th {
  background: var(--color-bg-alt);
  color: var(--color-text);
  font-weight: 600;
  width: 40%;
}

.product-children-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
}

/* === 后台管理样式 === */
.admin-layout {
  display: flex;
  align-items: flex-start;
  min-height: 100vh;
}

.admin-sidebar {
  background: var(--color-bg-dark);
  color: #fff;
  padding: var(--space-md) 0;
  position: sticky;
  top: 0;
  flex: 0 0 240px;
  width: 240px;
  height: 100vh;
  overflow-y: auto;
}

.admin-sidebar__brand {
  padding: 0 var(--space-md) var(--space-md);
  font-weight: 800;
  font-size: 1.125rem;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  margin-bottom: var(--space-sm);
}

.admin-sidebar__brand span { color: var(--color-accent-light); }

.admin-nav a {
  display: block;
  padding: 0.75rem var(--space-md);
  color: rgba(255,255,255,0.6);
  font-size: 0.9375rem;
  transition: var(--transition-fast);
  border-left: 3px solid transparent;
}

.admin-nav a:hover,
.admin-nav a.is-active {
  background: rgba(255,255,255,0.06);
  color: #fff;
  border-left-color: var(--color-accent);
}

.admin-content {
  flex: 1 1 auto;
  min-width: 0;
  padding: var(--space-lg);
  background: var(--color-bg-alt);
  min-height: 100vh;
}

.admin-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-md);
  max-width: 1100px;
}

.admin-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-md);
}

.admin-card--full {
  max-width: 1100px;
}

.admin-card__title {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.admin-field {
  margin-bottom: var(--space-sm);
}

.admin-field label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--color-text);
}

.admin-input,
.admin-textarea,
.admin-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  background: #fff;
}

.admin-input:focus,
.admin-textarea:focus,
.admin-select:focus {
  border-color: var(--color-primary);
  outline: none;
}

.admin-textarea {
  min-height: 90px;
  resize: vertical;
}

.admin-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.admin-thumb {
  width: 120px;
  height: 120px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
  font-size: 0.75rem;
  position: relative;
}

.admin-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.admin-tree-node {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-sm);
  padding: var(--space-sm);
  background: #fff;
}

.admin-tree-node__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.admin-tree-node__children {
  margin-top: var(--space-sm);
  padding-left: var(--space-md);
  border-left: 2px solid var(--color-border);
}

.admin-tree-node__name {
  flex: 1 1 auto;
  min-width: 80px;
  max-width: 360px;
  font-weight: 600;
  padding: 0.4rem 0.6rem;
}

.admin-tree-toggle {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--color-primary);
  font-size: 0.875rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.admin-tree-toggle:hover { background: var(--color-bg-alt); }

.admin-badge {
  font-size: 0.6875rem;
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-bg-alt);
  color: var(--color-text-muted);
}

.admin-badge--cat { background: var(--color-primary); color: #fff; }
.admin-badge--sub { background: var(--color-accent); color: #fff; }
.admin-badge--prod { background: var(--color-success); color: #fff; }

.admin-toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--color-success);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(20px);
  transition: var(--transition);
  z-index: 9999;
  font-size: 0.9375rem;
}

.admin-toast--show {
  opacity: 1;
  transform: translateY(0);
}

.admin-login {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-dark);
}

.admin-login__box {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  width: 360px;
  max-width: 90vw;
  box-shadow: var(--shadow-xl);
}

.admin-login__title {
  text-align: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.admin-error {
  background: #fdecea;
  color: var(--color-error);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .admin-layout { flex-direction: column; }
  .admin-sidebar { position: relative; flex: none; width: 100%; height: auto; }
  .admin-content { width: 100%; }
  .admin-row { grid-template-columns: 1fr; }
  .admin-cards { grid-template-columns: 1fr; }
  .product-detail__hero { grid-template-columns: 1fr; }
  .product-detail__photos { grid-template-columns: repeat(3, 1fr); }
}