/* =========================================
   斯曼股份官网 - 主样式表 v4.0
   设计语言：清朗深海蓝 · 明亮钢蓝 · 暖金点睛 · 大气稳重
   ========================================= */

/* ── 设计令牌（CSS 变量）──────────────────────────────────── */
:root {
  /* 主色：清朗深海蓝（有力度但不压抑，类 ABB/西门子品牌蓝）*/
  --color-primary:        #0d3b72;   /* 深海蓝，导航/底部用 */
  --color-primary-light:  #1550a0;   /* 明亮钢蓝，hover/激活 */
  --color-primary-mid:    #2468c8;   /* 更亮的蓝，高亮装饰 */
  --color-primary-soft:   #deeaf8;   /* 极浅蓝背景 */
  --color-primary-pale:   #f0f5fc;   /* 最浅蓝底 */

  /* 强调色：暖亮金（更鲜亮，有对比有活力）*/
  --color-gold:           #e8a430;   /* 主金色，更亮更暖 */
  --color-gold-light:     #f5c04a;   /* 高亮金 */
  --color-gold-dark:      #b8801a;   /* 深金 */
  --color-gold-pale:      #fef9ec;   /* 极浅金底 */
  --color-gold-subtle:    rgba(232,164,48,0.14);

  /* 辅助色 */
  --color-accent:         #0e7dd4;   /* 天蓝色强调 */
  --color-success:        #1d9c6e;
  --color-warning:        #e08c10;
  --color-error:          #c0392b;

  /* 中性色阶（干净明快）*/
  --color-white:          #ffffff;
  --color-bg:             #f4f7fb;   /* 页面底色：轻微蓝调白 */
  --color-bg-alt:         #ebf0f8;
  --color-surface:        #fafcfe;
  --color-border:         #d4dce9;
  --color-border-light:   #e3eaf4;
  --color-border-dark:    #b8c5d6;
  --color-text:           #15253e;   /* 主文字：深蓝黑 */
  --color-text-secondary: #38537a;   /* 次文字 */
  --color-text-muted:     #6b85a6;
  --color-text-light:     #9fb3cc;
  --color-divider:        rgba(13,59,114,0.08);

  /* 字体 */
  --font-primary: "PingFang SC", "Microsoft YaHei", "微软雅黑", "Noto Sans SC", Arial, sans-serif;
  --font-mono:    "JetBrains Mono", "Courier New", monospace;

  /* 字号比例 */
  --text-xs:   11px;
  --text-sm:   13px;
  --text-base: 14px;
  --text-md:   16px;
  --text-lg:   19px;
  --text-xl:   23px;
  --text-2xl:  28px;
  --text-3xl:  36px;
  --text-4xl:  46px;

  /* 间距（8pt 网格） */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* 圆角 */
  --radius-sm:   2px;
  --radius-md:   5px;
  --radius-lg:   10px;
  --radius-xl:   14px;
  --radius-full: 999px;

  /* 阴影（带蓝调，更通透）*/
  --shadow-xs:   0 1px 3px rgba(13,59,114,0.07);
  --shadow-sm:   0 2px 8px rgba(13,59,114,0.08), 0 1px 2px rgba(13,59,114,0.05);
  --shadow-md:   0 4px 16px rgba(13,59,114,0.10), 0 2px 4px rgba(13,59,114,0.06);
  --shadow-lg:   0 8px 32px rgba(13,59,114,0.13), 0 4px 8px rgba(13,59,114,0.07);
  --shadow-xl:   0 16px 52px rgba(13,59,114,0.17), 0 6px 14px rgba(13,59,114,0.09);
  --shadow-gold: 0 6px 24px rgba(232,164,48,0.22);

  /* 过渡 */
  --transition-fast:   160ms cubic-bezier(0.25,0.46,0.45,0.94);
  --transition-normal: 320ms cubic-bezier(0.25,0.46,0.45,0.94);
  --transition-slow:   520ms cubic-bezier(0.25,0.46,0.45,0.94);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
}

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

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

ul, ol { list-style: none; }

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

/* ── 通用容器 ──────────────────────────────────────────────── */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* =========================================
   头部导航
   ========================================= */
.header {
  background: linear-gradient(135deg, var(--color-primary) 0%, #0e4488 100%);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 24px rgba(13,59,114,0.35);
  /* overflow: hidden 会裁剪绝对定位的子菜单，改为 visible */
  overflow: visible;
}

/* 导航栏井字格背景纹理 */
.header::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
  z-index: 0;
}

.header .container {
  position: relative;
  z-index: 1;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

/* ── Logo 区域 ─────────────────────────────────────────── */
.logo {
  display: flex;
  align-items: center;
  gap: 0;               /* 竖线两侧各用 margin 精控间距 */
  text-decoration: none;
  flex-shrink: 0;
  padding: 4px 0;
  transition: opacity var(--transition-fast);
}

.logo:hover {
  opacity: 0.90;
}

/* Logo 图片 */
.logo-img {
  width: 62px;
  height: 62px;
  object-fit: cover;
  flex-shrink: 0;
  display: block;
  border-radius: 8px;
  margin-right: 14px;   /* 图片右侧到竖线的距离 */
  transition: transform var(--transition-normal);
}

.logo:hover .logo-img {
  transform: scale(1.04);
}

/* ── 金色渐隐竖线分隔 ──────────────────────────── */
.logo-divider {
  width: 1px;
  height: 30px;
  flex-shrink: 0;
  background: linear-gradient(
    to bottom,
    transparent          0%,
    rgba(232,164,48,0.20) 15%,
    rgba(232,164,48,0.55) 50%,
    rgba(232,164,48,0.20) 85%,
    transparent          100%
  );
  margin-right: 14px;   /* 竖线右侧到文字的距离 */
  transition: opacity var(--transition-normal);
}

.logo:hover .logo-divider {
  opacity: 0.75;
}

/* 文字区域 */
.logo-text {
  display: flex;
  flex-direction: column;
  gap: 5px;
  line-height: 1;
}

/* 英文品牌名 SMILE */
.logo-name-en {
  font-size: 22px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: 5px;
  text-transform: uppercase;
  line-height: 1;
  display: block;
}

/* 中文副标题 */
.logo-name-cn {
  font-size: 11.5px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.70);
  letter-spacing: 1px;
  line-height: 1;
  display: flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

/* 副标题中的股票代码数字高亮（金色）*/
.logo-name-cn .stock-code {
  color: rgba(232, 164, 48, 0.85);
  font-weight: 600;
  letter-spacing: 1.5px;
  font-size: 11.5px;
}

/* 兼容旧类名（如有其他地方引用）*/
.logo-text .en  { font-size: 22px; font-weight: 800; color: #fff; letter-spacing: 5px; }
.logo-text .cn  { font-size: 11px; color: rgba(255,255,255,0.50); letter-spacing: 3px; }

/* 导航菜单 */
.nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.nav-item {
  position: relative;
}

.nav-item > a {
  display: block;
  padding: 0 18px;
  line-height: 76px;
  font-size: 13.5px;
  color: rgba(255,255,255,0.75);
  font-weight: 400;
  letter-spacing: 0.8px;
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.nav-item > a:hover {
  color: #fff;
  background: rgba(255,255,255,0.08);
}

.nav-item.active > a {
  color: var(--color-gold-light);
}

/* 活跃状态底部金线 */
.nav-item.active > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 18px;
  right: 18px;
  height: 2px;
  background: var(--color-gold);
  border-radius: 1px 1px 0 0;
}

/* 下拉子菜单 */
.submenu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #0d3b72;
  min-width: 152px;
  box-shadow: 0 8px 28px rgba(13,59,114,0.4);
  border-top: 2px solid var(--color-gold);
  z-index: 999;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  overflow: hidden;
}

.nav-item:hover .submenu {
  display: block;
  animation: menuFadeIn 0.16s ease;
}

@keyframes menuFadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

.submenu li a {
  display: block;
  padding: 10px 20px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.62);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  transition: all var(--transition-fast);
  letter-spacing: 0.5px;
}

.submenu li:last-child a { border-bottom: none; }

.submenu li a:hover {
  background: rgba(232,164,48,0.12);
  color: var(--color-gold-light);
  padding-left: 26px;
}

/* =========================================
   首屏包裹层（banner + 数字条）
   ========================================= */
.hero-wrapper {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 76px); /* 减去sticky导航栏高度 */
  min-height: 500px;
}

/* =========================================
   轮播 Banner
   ========================================= */
.banner {
  position: relative;
  width: 100%;
  overflow: hidden;
  background-color: var(--color-primary);
  flex: 1; /* 自动填满hero-wrapper剩余高度 */
  min-height: 0; /* flex子项需要设置，否则min-height:auto会撑开 */
}

.banner-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease;
  z-index: 1;
}

.banner-slide.active {
  opacity: 1;
  z-index: 2;
}

.banner-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.72) saturate(0.95);
  transform: scale(1.10);
  transition: transform 8s ease;
}

.banner-slide.active img {
  transform: scale(1.0);
}

/* 懒加载图片占位样式 */
img[data-src] {
  background-color: var(--color-bg-alt);
  min-height: 120px;
}

/* Banner 多层遮罩（蓝调，不那么黑压压）*/
.banner-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to right, rgba(13,59,114,0.52) 0%, rgba(13,59,114,0.08) 60%, transparent 100%),
    linear-gradient(to top, rgba(13,59,114,0.38) 0%, transparent 50%);
}

.banner-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  z-index: 2;
  padding: 0 8%;
  max-width: 820px;
}

/* 装饰短横线 */
.banner-content::before {
  content: '';
  display: block;
  width: 40px;
  height: 2px;
  background: var(--color-gold);
  margin-bottom: var(--space-5);
  border-radius: 1px;
  box-shadow: 0 0 8px rgba(232,164,48,0.5);
}

.banner-content h2 {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: #fff;
  margin-bottom: var(--space-5);
  letter-spacing: 4px;
  line-height: 1.4;
  text-shadow: 0 2px 24px rgba(13,59,114,0.5);
}

.banner-content p {
  font-size: 15px;
  color: rgba(255,255,255,0.75);
  letter-spacing: 2px;
  line-height: 1.8;
  font-weight: 300;
}

.banner-dots {
  position: absolute;
  bottom: var(--space-8);
  left: 8%;
  display: flex;
  gap: var(--space-2);
  z-index: 3;
}

.dot {
  width: 20px;
  height: 2px;
  border-radius: 1px;
  background: rgba(232,164,48,0.35);  /* 金色半透明 */
  cursor: pointer;
  transition: all var(--transition-normal);
}

.dot.active {
  background: var(--color-gold);
  width: 36px;
  box-shadow: 0 0 8px rgba(232,164,48,0.7);
}

.dot:hover:not(.active) {
  background: rgba(232,164,48,0.6);
}

/* =========================================
   主内容区
   ========================================= */
.main-content {
  padding: var(--space-12) 0 var(--space-8);
}

/* 通用 section */
.section {
  margin-bottom: var(--space-16);
}

/* section 标题头 */
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: var(--space-8);
  padding-bottom: var(--space-4);
  position: relative;
}

/* 分隔线：左蓝右浅 */
.section-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(to right, var(--color-primary-light) 0%, var(--color-primary-light) 56px, var(--color-border) 56px, var(--color-border) 100%);
}

.section-title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
  letter-spacing: 1.5px;
  line-height: 1.3;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* 标题左侧竖线（金色点缀）*/
.section-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 20px;
  background: linear-gradient(to bottom, var(--color-gold-light), var(--color-gold));
  border-radius: 2px;
  flex-shrink: 0;
}

/* 英文副标题 */
.section-sub {
  display: block;
  font-size: var(--text-xs);
  font-weight: 400;
  color: var(--color-text-muted);
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-top: 2px;
  margin-left: 18px;
}

.more-link {
  font-size: 12px;
  color: var(--color-primary-light);
  border: 1px solid var(--color-primary-soft);
  padding: 5px 16px;
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  letter-spacing: 0.5px;
  white-space: nowrap;
  flex-shrink: 0;
  font-weight: 500;
}

.more-link:hover {
  background: var(--color-primary-light);
  border-color: var(--color-primary-light);
  color: #fff;
}

/* =========================================
   新闻 + 介绍双栏区
   ========================================= */
.news-section {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: var(--space-6);
  margin-bottom: var(--space-16);
}

.news-block {
  background: var(--color-white);
  padding: var(--space-8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

/* 新闻列表条目 */
.news-list { margin-top: var(--space-2); }

.news-item {
  display: flex;
  gap: var(--space-5);
  padding: var(--space-5) 0;
  border-bottom: 1px solid var(--color-border-light);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
}

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

.news-item:hover { transform: translateX(4px); }
.news-item:hover .news-info h4 { color: var(--color-primary-light); }

.news-thumb { flex-shrink: 0; }

.news-thumb img {
  width: 108px;
  height: 72px;
  object-fit: cover;
  border-radius: var(--radius-md);
  display: block;
  transition: transform var(--transition-normal);
}

.news-item:hover .news-thumb img {
  transform: scale(1.03);
}

.news-info {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-info h4 {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition-fast);
}

.news-info p {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-date {
  flex-shrink: 0;
  text-align: center;
  width: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.news-date .day {
  font-size: 24px;
  font-weight: 300;
  color: var(--color-primary-light);
  line-height: 1;
  display: block;
  letter-spacing: -1px;
}

.news-date .month {
  font-size: 10px;
  color: var(--color-text-light);
  margin-top: 5px;
  display: block;
  letter-spacing: 0.3px;
}

/* 公司介绍预览 */
.about-preview { margin-top: var(--space-4); }

.about-preview .image { margin-bottom: var(--space-5); overflow: hidden; border-radius: var(--radius-md); }

.about-preview .image img {
  width: 100%;
  height: 172px;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-preview:hover .image img {
  transform: scale(1.03);
}

.about-preview .text p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: var(--space-3);
  text-indent: 2em;
}

/* =========================================
   产品中心网格
   ========================================= */
.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-4);
}

.product-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-5) var(--space-8);
  text-align: center;
  text-decoration: none;
  color: var(--color-text);
  transition: all var(--transition-normal);
  display: block;
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-lg);
  transform: translateY(-6px);
  color: var(--color-primary);
}

.product-icon {
  width: 68px;
  height: 68px;
  border-radius: var(--radius-lg);
  background: var(--color-primary-pale);
  border: 1px solid var(--color-primary-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-5);
  transition: all var(--transition-normal);
  position: relative;
}

/* 用SVG路径图标替代文字符号 */
.product-icon::after {
  content: '';
  width: 28px;
  height: 28px;
  display: block;
  background: var(--color-primary);
  mask-size: contain;
  mask-repeat: no-repeat;
  mask-position: center;
  -webkit-mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  -webkit-mask-position: center;
  transition: background var(--transition-normal);
}

.product-icon[data-icon="◆"]::after {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 2L22 12L12 22L2 12Z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 2L22 12L12 22L2 12Z'/%3E%3C/svg%3E");
}

.product-icon[data-icon="◇"]::after {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 3L21 12L12 21L3 12Z' fill='none' stroke='%23000' stroke-width='1.5'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 3L21 12L12 21L3 12Z' fill='none' stroke='%23000' stroke-width='1.5'/%3E%3C/svg%3E");
}

.product-icon[data-icon="○"]::after {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='12' cy='12' r='9' fill='none' stroke='%23000' stroke-width='1.5'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Ccircle cx='12' cy='12' r='9' fill='none' stroke='%23000' stroke-width='1.5'/%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3C/svg%3E");
}

.product-icon[data-icon="●"]::after {
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 2C8 2 5 5 5 9c0 5 7 13 7 13s7-8 7-13c0-4-3-7-7-7z'/%3E%3C/svg%3E");
  mask-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M12 2C8 2 5 5 5 9c0 5 7 13 7 13s7-8 7-13c0-4-3-7-7-7z'/%3E%3C/svg%3E");
}

.product-card:hover .product-icon {
  background: var(--color-primary-light);
  border-color: transparent;
  box-shadow: 0 4px 16px rgba(21,80,160,0.25);
}

.product-card:hover .product-icon::after {
  background: var(--color-gold-light);
}

.product-card h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-primary);
  letter-spacing: 0.8px;
}

.product-card p {
  font-size: 10.5px;
  color: var(--color-text-muted);
  letter-spacing: 1.2px;
  text-transform: uppercase;
  line-height: 1.4;
}

/* =========================================
   技术研发区块
   ========================================= */
.tech-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
}

.tech-block {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
  transition: all var(--transition-normal);
  position: relative;
}

.tech-block:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.tech-block .image { position: relative; overflow: hidden; }

.tech-block .image img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
  filter: brightness(0.92) saturate(0.95);
}

.tech-block:hover .image img {
  transform: scale(1.04);
  filter: brightness(1) saturate(1);
}

/* 图片底部渐变 */
.tech-block .image::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 80px;
  background: linear-gradient(transparent, rgba(13,59,114,0.25));
}

.tech-block .content {
  padding: var(--space-6) var(--space-7);
  border-top: 1px solid var(--color-border-light);
  position: relative;
}

/* 蓝色左边框装饰 */
.tech-block .content::before {
  content: '';
  position: absolute;
  left: 0;
  top: var(--space-6);
  bottom: var(--space-6);
  width: 3px;
  background: linear-gradient(to bottom, var(--color-primary-light), var(--color-primary-mid));
  border-radius: 0 2px 2px 0;
}

.tech-block .content h4 {
  font-size: var(--text-md);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  letter-spacing: 0.5px;
}

.tech-block .content p {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.95;
}

/* 左右布局变体（中心简介） */
.tech-block-horizontal {
  display: flex;
  flex-direction: row;
  align-items: center;
  padding: var(--space-8);
  background: linear-gradient(135deg, #ffffff 0%, #f8fbff 100%);
  border: 1px solid var(--color-border-light);
}

.tech-block-horizontal .image {
  flex-shrink: 0;
  width: 280px;
  height: 200px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 16px rgba(13,59,114,0.12);
  border: 2px solid var(--color-primary-soft);
}

.tech-block-horizontal .image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-normal);
}

.tech-block-horizontal:hover .image img {
  transform: scale(1.05);
}

.tech-block-horizontal:hover .image {
  box-shadow: 0 8px 24px rgba(13,59,114,0.18);
}

.tech-block-horizontal .content {
  flex: 1;
  padding: 0 0 0 var(--space-8);
  border: none;
}

.tech-block-horizontal .content::before {
  display: none;
}

.tech-block-horizontal .content h4 {
  font-size: 14px;
  margin-bottom: var(--space-4);
  color: var(--color-primary);
  position: relative;
  padding-left: var(--space-5);
  font-weight: 600;
  letter-spacing: 0.8px;
}

.tech-block-horizontal .content h4::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 24px;
  background: linear-gradient(to bottom, var(--color-gold-light), var(--color-gold));
  border-radius: 2px;
}

.tech-block-horizontal .content p {
  font-size: 13px;
  line-height: 1.95;
  color: var(--color-text-secondary);
}

/* =========================================
   底部 Footer — 全新四栏布局
   ========================================= */
.footer {
  background: linear-gradient(160deg, #0a2d5e 0%, var(--color-primary) 45%, #0e4488 100%);
  color: rgba(255,255,255,0.62);
  padding: 0;
  position: relative;
  overflow: hidden;
}

/* 顶部金色装饰线 */
.footer-top-line {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--color-gold-dark) 20%, var(--color-gold-light) 50%, var(--color-gold-dark) 80%, transparent 100%);
  position: relative;
  z-index: 2;
}

/* 井字格背景纹理 */
.footer-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 52px 52px;
  pointer-events: none;
  z-index: 0;
}

/* 大背景光晕（左下） */
.footer::before {
  content: '';
  position: absolute;
  bottom: -60px;
  left: -80px;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(21,80,160,0.18) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.footer-main {
  padding: 40px 0 0;
  position: relative;
  z-index: 1;
}

/* ── 四栏网格 ── */
.footer-columns {
  display: grid;
  grid-template-columns: 1.6fr 1.2fr 2.2fr 1fr;
  gap: 0;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(255,255,255,0.07);
}

/* 每栏内边距 + 右侧分隔线 */
.footer-col {
  padding: 0 32px 0 0;
  margin-right: 32px;
  border-right: 1px solid rgba(255,255,255,0.07);
}
.footer-col:first-child { padding-left: 0; }
.footer-col:last-child {
  padding-right: 0;
  margin-right: 0;
  border-right: none;
}

/* 栏标题通用 */
.footer-col-title {
  font-size: 12px;
  font-weight: 600;
  color: rgba(255,255,255,0.55);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}

.footer-col-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 1px;
  background: var(--color-gold);
  border-radius: 1px;
}

/* ── 第一栏：品牌区 ── */
.footer-logo-wrap {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo-img {
  width: 46px;
  height: 46px;
  object-fit: cover;
  border-radius: 8px;
  flex-shrink: 0;
  opacity: 0.92;
  filter: brightness(1.05);
}

.footer-logo-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-logo-en {
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: 5px;
  line-height: 1;
}

.footer-logo-cn {
  font-size: 10.5px;
  color: rgba(255,255,255,0.45);
  letter-spacing: 0.5px;
  line-height: 1;
  white-space: nowrap;
}

.footer-brand-desc {
  font-size: 12px;
  color: rgba(255,255,255,0.42);
  line-height: 1.85;
  margin-bottom: 18px;
}

.footer-social {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-social-label {
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.footer-social-icons {
  display: flex;
  gap: 6px;
}

.footer-social-icon {
  width: 32px;
  height: 32px;
  border-radius: 7px;
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  color: inherit;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.footer-social-icon:hover {
  background: rgba(255,255,255,0.10);
  border-color: var(--color-gold);
  box-shadow: 0 0 0 1px var(--color-gold);
}

.footer-social-icon img {
  transition: transform var(--transition-fast);
}

.footer-social-icon:hover img {
  transform: scale(1.1);
}

/* ── 第二栏：导航（两列布局） ── */
.footer-nav-two-col {
  display: flex;
  gap: 16px;
}

.footer-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex: 1;
}

.footer-nav-list-item {
  display: block;
}

.footer-nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: rgba(255,255,255,0.52);
  padding: 5px 0;
  text-decoration: none;
  transition: all var(--transition-fast);
  letter-spacing: 0.3px;
}

.footer-nav-link:hover {
  color: var(--color-gold-light);
  transform: translateX(3px);
}

.footer-nav-arrow {
  font-size: 14px;
  color: rgba(232,164,48,0.5);
  line-height: 1;
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.footer-nav-link:hover .footer-nav-arrow {
  color: var(--color-gold-light);
}

/* ── 第三栏：联系方式 ── */
.footer-contact-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-contact-row {
  display: flex;
  align-items: flex-start;
  gap: 9px;
}

.footer-contact-icon {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 5px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.09);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(232,164,48,0.75);
  margin-top: 1px;
}

.footer-contact-text {
  font-size: 12px;
  color: rgba(255,255,255,0.58);
  line-height: 1.65;
  flex: 1;
}

.footer-contact-sep {
  margin: 0 6px;
  opacity: 0.25;
}

.footer-contact-sublabel {
  font-size: 11px;
  opacity: 0.6;
  margin-right: 3px;
}

/* ── 第四栏：二维码 ── */
.footer-qr-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.footer-qr-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.footer-qr-frame {
  padding: 5px;
  background: rgba(255,255,255,0.95);
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

.footer-qr-frame:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  border-color: var(--color-gold);
}

.footer-qr-frame img {
  width: 88px;
  height: 88px;
  display: block;
  border-radius: 4px;
}

.footer-qr-label {
  font-size: 11px;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.5px;
  text-align: center;
}

/* ── 版权栏 ── */
.footer-bottom {
  padding: 14px 0;
  position: relative;
  z-index: 1;
}

.footer-bottom-inner {
  display: flex;
  align-items: center;
  justify-content: center;
}

.footer-copyright {
  font-size: 11.5px;
  color: rgba(255,255,255,0.28);
  letter-spacing: 0.3px;
  line-height: 1;
  margin: 0;
}

.footer-bottom-sep {
  margin: 0 10px;
  opacity: 0.3;
}

/* 底部金色光晕收尾 */
.footer-bottom-glow {
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, rgba(232,164,48,0.4) 50%, transparent 100%);
  position: relative;
  z-index: 2;
}

/* 兼容旧类名（防止其他地方引用出错）*/
.footer-content { display: none; }
.footer-content-2col { display: none; }
.footer-content-3col { display: none; }

/* =========================================
   内页布局
   ========================================= */
.content-wrapper { width: 100%; }
.content-main { width: 100%; }

.content-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-5) 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 0;
}

.content-header h2 {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-primary);
}

/* 横向 Tab 导航 */
.page-tabs {
  display: flex;
  align-items: center;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
  background: var(--color-white);
  padding: 0 var(--space-2);
  flex-wrap: wrap;
}

.page-tab {
  display: inline-block;
  padding: var(--space-4) var(--space-6);
  font-size: 13.5px;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition-fast);
  white-space: nowrap;
  font-weight: 400;
  letter-spacing: 0.5px;
}

.page-tab:hover { color: var(--color-gold-light); }

.page-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-gold-light);
  font-weight: 600;
}

/* 内页内容区 */
.page-content-area {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-10) var(--space-10);
  box-shadow: var(--shadow-xs);
  min-height: 300px;
  border: 1px solid var(--color-border-light);
  overflow-x: auto;
  max-width: 100%;
}

.page-content-area p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: var(--space-4);
  text-indent: 2em;
}

.page-content-area h3 {
  font-size: var(--text-md);
  color: var(--color-primary);
  font-weight: 700;
  margin: var(--space-8) 0 var(--space-4);
  padding-left: var(--space-4);
  border-left: 3px solid var(--color-primary-light);
}

/* 防止内容区子元素撑大容器导致页面缩小 */
.page-content-area img,
.page-content-area video,
.page-content-area iframe,
.page-content-area embed,
.page-content-area object {
  max-width: 100%;
  height: auto;
}

.page-content-area table {
  max-width: 100%;
  overflow-x: auto;
  display: block;
}

.page-content-area pre,
.page-content-area code {
  max-width: 100%;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* 时间轴 */
.timeline {
  margin-top: var(--space-3);
  padding-left: var(--space-3);
  border-left: 1px solid var(--color-border);
}

.timeline-item {
  position: relative;
  padding: 0 0 var(--space-6) var(--space-8);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 7px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--color-primary-light);
  border: 2px solid var(--color-white);
  box-shadow: 0 0 0 1px var(--color-primary-light);
}

.timeline-date {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-primary-light);
  margin-bottom: var(--space-1);
}

.timeline-content {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* 公司介绍图片 */
.about-image {
  margin-bottom: var(--space-6);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-image img {
  width: 100%;
  height: 340px;
  object-fit: cover;
  display: block;
}

/* =========================================
   面包屑
   ========================================= */
.breadcrumb-bar {
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border-light);
  padding: var(--space-3) 0;
}

.breadcrumb {
  font-size: 12.5px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

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

.breadcrumb a:hover { color: var(--color-primary-light); }
.breadcrumb .sep { color: var(--color-border-dark); opacity: 0.6; }
.breadcrumb .current { color: var(--color-text); }

/* =========================================
   内页 Banner（子页面顶部）
   ========================================= */
.page-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1550a0 100%);
  color: #fff;
  padding: var(--space-12) 0;
  text-align: center;
  position: relative;
  overflow: hidden;
  height: 220px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 极细网格背景 */
.page-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* 底部金色装饰线 */
.page-banner-bottom-line {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent 0%, var(--color-gold) 50%, transparent 100%);
  z-index: 2;
}

.page-banner .page-title {
  position: relative;
  z-index: 1;
}

.page-banner h1 {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: 5px;
  margin-bottom: var(--space-3);
  position: relative;
  color: rgba(255,255,255,0.95);
  text-shadow: 0 2px 12px rgba(0,0,0,0.15);
}

.page-banner p {
  font-size: 13px;
  opacity: 0.7;
  letter-spacing: 3px;
  position: relative;
  font-weight: 400;
  color: rgba(255,255,255,0.8);
}

/* 装饰性光晕效果 */
.page-banner .glow-effect {
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232,164,48,0.08) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}

/* =========================================
   关于我们页面
   ========================================= */
.about-content {
  padding: var(--space-12) 0;
  background: var(--color-white);
}

.about-intro {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
  margin-bottom: var(--space-12);
}

.about-intro-text h2 {
  font-size: var(--text-xl);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  font-weight: 700;
  letter-spacing: 1px;
}

.about-intro-text p {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 2;
  margin-bottom: var(--space-4);
  text-indent: 2em;
}

.about-intro-img img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
}

/* 数据统计条 */
.stats-bar {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  padding: var(--space-12) 0;
  position: relative;
}

.stats-bar::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  text-align: center;
}

.stat-item {
  padding: var(--space-5) var(--space-4);
  border-right: 1px solid rgba(255,255,255,0.10);
}

.stat-item:last-child { border-right: none; }

.stat-item .num {
  font-size: 42px;
  font-weight: 300;
  display: block;
  line-height: 1;
  margin-bottom: var(--space-3);
  color: var(--color-gold-light);
  letter-spacing: -1px;
}

.stat-item .label {
  font-size: 12px;
  opacity: 0.65;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

/* =========================================
   新闻列表页
   ========================================= */
.news-page-list { padding: var(--space-10) 0; }

.news-page-item {
  display: flex;
  gap: var(--space-6);
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--color-border-light);
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
}

.news-page-item:hover { transform: translateX(4px); }
.news-page-item:hover .news-page-title { color: var(--color-primary-light); }

.news-page-thumb { flex-shrink: 0; }

.news-page-thumb img {
  width: 200px;
  height: 130px;
  object-fit: cover;
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal);
}

.news-page-item:hover .news-page-thumb img {
  transform: scale(1.03);
}

.news-page-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.news-page-title {
  font-size: var(--text-md);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
  line-height: 1.55;
  transition: color var(--transition-fast);
}

.news-page-summary {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.85;
  margin-bottom: var(--space-3);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.news-page-meta {
  font-size: 12px;
  color: var(--color-text-light);
  letter-spacing: 0.3px;
}

/* 分类选项卡 */
.cat-tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--space-8);
}

.cat-tab {
  padding: var(--space-3) var(--space-6);
  font-size: 13.5px;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: block;
  letter-spacing: 0.5px;
}

.cat-tab:hover { color: var(--color-gold-light); }

.cat-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-gold-light);
  font-weight: 600;
}

/* 分页 */
.pagination {
  display: flex;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-10) 0 var(--space-5);
}

.page-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 13.5px;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
  min-width: 34px;
  text-align: center;
}

.page-btn:hover {
  background: var(--color-primary-pale);
  border-color: var(--color-primary-soft);
  color: var(--color-primary-light);
}

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

/* =========================================
   产品列表页
   ========================================= */
.products-page { padding: var(--space-10) 0; }

.products-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-5);
}

.product-page-card {
  background: var(--color-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: all var(--transition-normal);
  display: block;
}

.product-page-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
  border-color: rgba(21,80,160,0.2);
}

.product-page-card-img {
  width: 100%;
  height: 210px;
  object-fit: cover;
  display: block;
  transition: transform var(--transition-slow);
}

.product-page-card:hover .product-page-card-img {
  transform: scale(1.04);
}

.product-page-card-info {
  padding: var(--space-5) var(--space-6);
  border-top: 1px solid var(--color-border-light);
  position: relative;
}

/* 顶部蓝线 */
.product-page-card-info::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-light) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.product-page-card:hover .product-page-card-info::before { opacity: 1; }

.product-page-card-info h3 {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
  letter-spacing: 0.3px;
}

.product-page-card-info p {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.75;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* =========================================
   联系我们
   ========================================= */
.contact-page {
  padding: var(--space-10) 0;
  background: var(--color-white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-16);
  align-items: start;
}

.contact-info-block h3 {
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
  font-weight: 700;
  letter-spacing: 0.5px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact-info-list-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.contact-info-list-item .icon {
  width: 36px;
  height: 36px;
  background: var(--color-primary-pale);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary-light);
  font-size: 15px;
  border: 1px solid var(--color-primary-soft);
}

.contact-info-list-item .text strong {
  font-size: 13px;
  color: var(--color-text);
  display: block;
  margin-bottom: 2px;
  font-weight: 600;
}

.contact-info-list-item .text span {
  font-size: 13px;
  color: var(--color-text-secondary);
}

/* =========================================
   通用工具类
   ========================================= */
.text-center { text-align: center; }
.text-gold    { color: var(--color-gold); }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }

.block-white {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border-light);
}

/* =========================================
   响应式布局
   ========================================= */
@media (max-width: 1024px) {
  .products-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-columns { grid-template-columns: 1fr 1fr; gap: 0; }
  .footer-col { padding: 0 20px 24px 0; margin-right: 20px; }
  .footer-col:nth-child(2) { border-right: none; padding-right: 0; margin-right: 0; }
  .footer-col:nth-child(3) { border-right: 1px solid rgba(255,255,255,0.07); margin-right: 20px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.07); }
  .footer-col:nth-child(4) { border-right: none; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.07); }
}

@media (max-width: 768px) {
  .header-content {
    height: auto;
    padding: 12px 0;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  .nav { flex-wrap: wrap; }

  .nav-item > a {
    line-height: 40px;
    padding: 0 var(--space-3);
    font-size: 13px;
  }

  .hero-wrapper {
    height: calc(100vh - 56px); /* 移动端导航栏更矮 */
    min-height: 420px;
  }

  .banner {
    min-height: 0;
  }

  .banner-content {
    padding: 0 var(--space-6);
    align-items: center;
    text-align: center;
  }

  .banner-content::before { margin: 0 auto var(--space-4); }
  .banner-content h2 { font-size: var(--text-xl); letter-spacing: 2px; }
  .banner-content p { font-size: 13px; }
  .banner-dots { left: 50%; transform: translateX(-50%); }

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

  /* 移动端：左右布局恢复为纵向 */
  .tech-block-horizontal {
    flex-direction: column;
    padding: var(--space-6);
  }

  .tech-block-horizontal .image {
    width: 100%;
    height: 180px;
  }

  .tech-block-horizontal .content {
    padding: var(--space-5) 0 0 0;
  }

  .tech-block-horizontal .content h4 {
    font-size: 18px;
  }

  .tech-block-horizontal .content h4::before {
    display: none;
  }

  .tech-block-horizontal .content h4 {
    padding-left: 0;
  }

  .tech-block-horizontal .content p {
    font-size: 13px;
  }

  /* 响应式：page-banner和footer高度调整 */
  .page-banner {
    height: 180px;
    min-height: 180px;
    padding: var(--space-8) 0;
  }
  
  .page-banner h1 {
    font-size: var(--text-xl);
    letter-spacing: 3px;
  }
  
  .page-banner p {
    font-size: 12px;
    letter-spacing: 2px;
  }

  .footer-columns { grid-template-columns: 1fr; }
  .footer-col {
    padding: 0 0 20px 0;
    margin-right: 0;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    padding-bottom: 20px;
  }
  .footer-col:last-child { border-bottom: none; }
  .footer-col:nth-child(3),
  .footer-col:nth-child(4) { border-top: none; padding-top: 0; margin-top: 0; border-right: none; }
  .footer-main { padding: 28px 0 0; }
  .footer-qr-item { flex-direction: row; align-items: center; gap: 14px; }
  .footer-qr-frame img { width: 72px; height: 72px; }

  .about-intro { grid-template-columns: 1fr; gap: var(--space-8); }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .products-page-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .container { padding: 0 var(--space-4); }
  .products-grid { grid-template-columns: 1fr; }
  .products-page-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stat-item .num { font-size: 32px; }
  .news-page-item { flex-direction: column; }
  .news-page-thumb img { width: 100%; height: 200px; }
  .footer-copyright { font-size: 11px; }
  .page-content-area { padding: var(--space-6); }
}