/**
 * 官网布局样式（参考 sziitc.com 视觉效果）
 */
@charset "utf-8";

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}
body {
  font-family: var(--font-family);
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  overflow-x: hidden;
  background: #fff;
}
.jz_root {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========== 头部 ========== */
.site-header {
  background: var(--header-bg);
  box-shadow: 0 2px 12px rgba(0,0,0,0.08);
  padding: 14px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: nowrap;
  gap: 16px;
  position: relative;
  width: 100%;
}
.site-logo {
  flex-shrink: 0;
}
.site-logo a {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: #212121;
}
.site-logo img { height: 56px; display: block; }
.site-title { margin-left: 10px; }
.site-title h1 { margin: 0; font-size: 20px; font-weight: bold; color: #212121; line-height: 1.3; letter-spacing: 0.5px; }
.site-title .en { font-size: 14px; color: var(--text-muted); font-weight: normal; display: block; margin-top: 2px; }

/* 语言切换器 */
.lang-switcher {
  position: relative;
  margin-left: 0;
  margin-right: 0;
  z-index: 102;
  flex-shrink: 0;
}
.lang-current {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px;
  background: #f5f5f5;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  font-size: 14px;
  color: #333;
  user-select: none;
}
.lang-current:hover {
  background: #e8e8e8;
}
.lang-flag {
  font-size: 18px;
  line-height: 1;
}
.lang-text {
  font-weight: 500;
}
.lang-dropdown {
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 8px;
  background: #fff;
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  min-width: 140px;
  display: none;
  overflow: hidden;
  z-index: 103;
}
.lang-switcher:hover .lang-dropdown,
.lang-switcher.active .lang-dropdown {
  display: block;
}
.lang-option {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  color: #333;
  text-decoration: none;
  transition: background 0.2s;
  font-size: 14px;
}
.lang-option:hover {
  background: #f5f5f5;
  color: var(--theme-color);
}
.lang-option.active {
  background: rgba(var(--theme-color-rgb), 0.1);
  color: var(--theme-color);
  font-weight: 600;
}

/* 移动端菜单按钮 */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: 8px;
  cursor: pointer;
  z-index: 101;
  position: relative;
  width: 40px;
  height: 40px;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}
.nav-toggle-icon {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  position: relative;
}
.nav-toggle-icon span {
  display: block;
  height: 3px;
  width: 100%;
  background: #333;
  border-radius: 2px;
  transition: all 0.3s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3) {
  transform: rotate(-45deg) translate(8px, -8px);
}

/* 导航 - 参考站风格 */
.site-nav {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  min-width: 0;
  margin: 0 20px;
}
.site-nav ul { 
  list-style: none; 
  margin: 0; 
  padding: 0; 
  display: flex; 
  align-items: center; 
  flex-wrap: nowrap; 
  gap: 0; 
}
.site-nav li { margin: 0; }
.site-nav li.sep {
  width: 1px;
  height: 18px;
  background: #e0e0e0;
  margin: 0 4px;
  list-style: none;
  flex-shrink: 0;
}
.site-nav > ul > li > a,
.site-nav a {
  display: block;
  padding: 10px 16px;
  color: #353535;
  text-decoration: none;
  font-size: 15px;
  font-weight: bold;
  border-radius: 4px;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--theme-color); }
.site-nav .nav-sub {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  min-width: 160px;
  padding: 10px 0;
  display: none;
  z-index: 10;
  border-radius: 4px;
  border: 1px solid var(--border-light);
}
.site-nav li.has-sub:hover .nav-sub { display: block; }
.site-nav .nav-sub a { font-weight: normal; font-size: 14px; padding: 10px 20px; color: #212121; }
.site-nav .nav-sub a:hover { background: rgba(var(--theme-color-rgb), 0.08); color: var(--theme-color); }
.site-nav .nav-item-wrap { position: relative; }

/* PC端导航菜单确保显示 */
@media (min-width: 992px) {
  .site-nav {
    display: flex !important;
    position: static !important;
    width: auto !important;
    height: auto !important;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 !important;
    overflow: visible !important;
    margin: 0 20px !important;
  }
  .site-nav ul {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    padding: 0 !important;
  }
  .site-nav li.sep {
    display: block !important;
  }
  .site-nav > ul > li {
    width: auto !important;
    border-bottom: none !important;
  }
  .site-nav > ul > li > a {
    padding: 10px 16px !important;
    border-radius: 4px !important;
  }
  /* PC端子菜单只在hover时显示 */
  .site-nav .nav-sub {
    display: none !important;
  }
  .site-nav li.has-sub:hover .nav-sub {
    display: block !important;
  }
  .site-nav .nav-item-wrap.active .nav-sub {
    display: none !important;
  }
  .nav-toggle {
    display: none !important;
  }
  .nav-overlay {
    display: none !important;
  }
}

/* 移动端导航样式 */
@media (max-width: 991px) {
  .lang-switcher {
    margin-right: 8px;
  }
  .lang-current {
    padding: 6px 10px;
    font-size: 13px;
  }
  .lang-flag {
    font-size: 16px;
  }
  .lang-dropdown {
    min-width: 120px;
  }
  .nav-toggle {
    display: flex;
  }
  .site-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: #fff;
    box-shadow: -2px 0 12px rgba(0,0,0,0.15);
    transition: right 0.3s ease;
    z-index: 1001;
    overflow-y: auto;
    padding-top: 70px;
  }
  .site-nav.open {
    right: 0;
  }
  .site-nav ul {
    flex-direction: column;
    align-items: stretch;
    padding: 0 20px;
  }
  .site-nav li.sep {
    display: none;
  }
  .site-nav > ul > li {
    width: 100%;
    border-bottom: 1px solid #f0f0f0;
  }
  .site-nav > ul > li > a {
    padding: 16px 12px;
    font-size: 16px;
    border-radius: 0;
  }
  .site-nav .nav-item-wrap.has-sub > a::after {
    content: '▼';
    float: right;
    font-size: 12px;
    transition: transform 0.3s;
  }
  .site-nav .nav-item-wrap.has-sub.active > a::after {
    transform: rotate(180deg);
  }
  .site-nav .nav-sub {
    position: static;
    display: none;
    box-shadow: none;
    border: none;
    background: #f8f9fa;
    margin: 0;
    padding: 0;
    border-radius: 0;
  }
  .site-nav .nav-item-wrap.active .nav-sub {
    display: block;
  }
  .site-nav .nav-sub li {
    border-bottom: 1px solid #e9ecef;
  }
  .site-nav .nav-sub a {
    padding: 12px 24px;
    font-size: 15px;
  }
  /* 移动端遮罩层 - 使用独立元素 */
  .nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
    z-index: 1000;
    pointer-events: none;
  }
  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
  }
}

/* ========== Banner 轮播 - 固定 16:9 宽高比，铺满无留白 ========== */
.section-banner {
  position: relative;
  width: calc(100% - 4px);
  margin: 0 2px;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #1a3658;
}
.section-banner .banner-slides { position: relative; width: 100%; height: 100%; }
.section-banner .banner-slide {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 0.8s ease;
}
.section-banner .banner-slide.active { z-index: 2; opacity: 1; }
.section-banner .banner-slide.banner-slide-single {
  position: relative;
  opacity: 1;
  height: 100%;
  background-size: cover;
  background-position: center;
}
.section-banner .banner-link { display: block; width: 100%; height: 100%; }
/* 全屏轮播上的标语蒙层 */
.banner-caption {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0.15) 40%, rgba(0,0,0,0.35) 100%);
}
.banner-caption .banner-caption-en {
  font-size: clamp(18px, 4vw, 28px);
  color: rgba(255,255,255,0.95);
  letter-spacing: 4px;
  margin: 0 0 16px 0;
  font-weight: 600;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.banner-caption .banner-caption-title {
  font-size: clamp(28px, 5.5vw, 52px);
  color: #fff;
  font-weight: bold;
  margin: 0 0 12px 0;
  letter-spacing: 2px;
  text-align: center;
  line-height: 1.3;
  text-shadow: 0 2px 20px rgba(0,0,0,0.5);
}
.banner-caption .banner-caption-sub {
  font-size: clamp(20px, 3.5vw, 32px);
  color: rgba(255,255,255,0.98);
  margin: 0;
  letter-spacing: 1px;
  text-shadow: 0 2px 16px rgba(0,0,0,0.45);
}

/* ========== 内容区通用 + 入场动效 ========== */
.jz_web_content { 
  padding-bottom: 0; 
  flex: 1;
  width: 100%;
  overflow-x: hidden;
}
@keyframes sectionFadeIn {
  from { opacity: 0; transform: translateY(28px); }
  to { opacity: 1; transform: translateY(0); }
}
.section {
  max-width: 1600px;
  margin: 0 auto;
  padding: 96px 48px;
  animation: sectionFadeIn 0.7s ease-out both;
}
/* 首个 section 为 banner，内容区从 2 开始；错峰入场 */
.jz_web_content > .section:nth-of-type(2) { animation-delay: 0.08s; }
.jz_web_content > .section:nth-of-type(3) { animation-delay: 0.16s; }
.jz_web_content > .section:nth-of-type(4) { animation-delay: 0.24s; }
.jz_web_content > .section:nth-of-type(5) { animation-delay: 0.32s; }
.jz_web_content > .section:nth-of-type(6) { animation-delay: 0.4s; }
.jz_web_content > .section:nth-of-type(7) { animation-delay: 0.48s; }
.jz_web_content > .section:nth-of-type(8) { animation-delay: 0.56s; }
.jz_web_content > .section:nth-of-type(9) { animation-delay: 0.64s; }
.section-title {
  text-align: center;
  margin-bottom: 56px;
}
.section-title h2 {
  font-size: 32px;
  font-weight: bold;
  color: #1f2937;
  margin: 0 0 12px 0;
  letter-spacing: 1px;
}
.section-title .en {
  font-size: 14px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* 我们的优势 - 四列卡片风格 */
.advantage-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  margin: 0 -12px;
}
.advantage-item {
  flex: 1;
  min-width: 280px;
  max-width: 360px;
  padding: 40px 32px;
  text-align: center;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s, border-color 0.3s, transform 0.2s;
}
.advantage-item:hover {
  box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  border-color: rgba(var(--theme-color-rgb), 0.3);
  transform: translateY(-2px);
}
/* 优势图标：橙色圆 + 白色 SVG（参考站效果，图标不爬取用自绘） */
.advantage-item .advantage-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 22px;
  background: linear-gradient(145deg, #f59e0b 0%, #ea580c 100%);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(234, 88, 12, 0.35);
}
.advantage-item .advantage-icon .adv-icon-svg {
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
}
.advantage-item .advantage-icon .adv-icon-svg svg {
  width: 36px;
  height: 36px;
  stroke: currentColor;
}
.advantage-item .item-title {
  font-size: 18px;
  font-weight: bold;
  margin-bottom: 14px;
  color: #212121;
}
.advantage-item .item-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 关于我们 - 左右布局，浅底 */
/* 关于我们 - 大气版：浅底 + 留白 + 楼宇图 */
.about-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 64px;
  background: linear-gradient(180deg, #fefefe 0%, #f8f9fa 50%, #f5f6f7 100%);
  padding: 96px 48px;
  margin: 0;
  max-width: 100%;
  box-sizing: border-box;
}
.about-row .section-title { margin-bottom: 32px; }
.about-text {
  flex: 1;
  min-width: 360px;
  max-width: 720px;
}
.about-text h2 {
  font-size: 28px;
  font-weight: bold;
  margin: 0 0 10px 0;
  color: #1f2937;
  letter-spacing: 0.5px;
}
.about-text .en {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
  letter-spacing: 2px;
  text-transform: uppercase;
}
.about-text p {
  font-size: 17px;
  color: var(--text-secondary);
  text-align: justify;
  line-height: 2.1;
  margin-bottom: 32px;
}
/* MORE + 参考站风格：白底蓝边蓝字，确保可见（覆盖全局 btn-theme 白字） */
.about-text .btn-theme {
  background: #fff !important;
  color: var(--theme-color) !important;
  border: 2px solid var(--theme-color);
  padding: 14px 36px;
  font-size: 15px;
  font-weight: 600;
  border-radius: 6px;
  transition: background 0.25s, color 0.25s, border-color 0.25s;
  text-decoration: none;
  display: inline-block;
}
.about-text .btn-theme:hover {
  background: var(--theme-color) !important;
  color: #fff !important;
  border-color: var(--theme-color);
}
.about-img {
  flex: 0 0 580px;
  max-width: 100%;
  min-height: 340px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.12), 0 2px 8px rgba(0,0,0,0.06);
  background: linear-gradient(135deg, #e5e7eb 0%, #d1d5db 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-img img {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: top;
  min-height: 340px;
  object-fit: cover;
}
.about-img .about-img-placeholder { display: none; color: #9ca3af; font-size: 15px; padding: 24px; text-align: center; }

/* 流程 - 参考原站 2×3 网格 + 蓝紫渐变图标 */
.process-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 52px 48px;
  max-width: 1120px;
  margin: 0 auto;
}
.process-card {
  text-align: center;
  padding: 0 8px;
}
.process-icon-wrap {
  margin-bottom: 24px;
  display: flex;
  justify-content: center;
  align-items: center;
}
.process-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
}
.process-icon svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 12px rgba(37, 99, 235, 0.25));
}
.process-card .process-title {
  font-size: 18px;
  font-weight: bold;
  color: #1f2937;
  margin: 0 0 12px 0;
  line-height: 1.3;
}
.process-card .process-desc {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}
@media (max-width: 900px) {
  .process-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 28px; }
}
@media (max-width: 520px) {
  .process-grid { grid-template-columns: 1fr; gap: 36px; }
}

/* 核心产品 - 参考原站：2行×4列网格 + 白底大卡片 + 左右半透明箭头贴边 */
.product-section { overflow: hidden; }
.product-section .section-title { margin-bottom: 48px; }
.product-showcase {
  position: relative;
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 64px 40px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.product-showcase .product-track { width: 100%; }
/* 原站风格：大箭头贴最左/最右，半透明灰 */
.product-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 1px solid rgba(0,0,0,0.08);
  background: rgba(255,255,255,0.92);
  color: #6b7280;
  font-size: 26px;
  line-height: 1;
  cursor: pointer;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: background 0.2s, color 0.2s, box-shadow 0.2s;
}
.product-arrow:hover {
  background: rgba(255,255,255,0.98);
  color: var(--theme-color);
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.product-arrow-prev { left: 12px; }
.product-arrow-next { right: 12px; }
@media (max-width: 900px) {
  .product-showcase { padding-left: 48px; padding-right: 48px; }
  .product-arrow-prev { left: 8px; }
  .product-arrow-next { right: 8px; }
}
.product-track {
  overflow-x: auto;
  overflow-y: hidden;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  display: flex;
  justify-content: center;
}
.product-track::-webkit-scrollbar { display: none; }
/* 参考原站：2 行 × 4 列网格，横向可滚动多页；内容居中 */
.product-grid.product-grid--ref {
  display: grid;
  grid-template-rows: 1fr 1fr;
  grid-auto-flow: column;
  grid-auto-columns: minmax(280px, 1fr);
  gap: 24px;
  width: max-content;
  max-width: 100%;
  min-height: 420px;
  padding: 4px 0;
  flex-shrink: 0;
  margin: 0 auto;
}
@media (max-width: 1200px) {
  .product-grid.product-grid--ref { grid-auto-columns: minmax(240px, 1fr); }
}
@media (max-width: 768px) {
  .product-grid.product-grid--ref {
    grid-template-rows: auto;
    grid-auto-flow: row;
    grid-auto-columns: 1fr;
    grid-template-columns: 1fr;
    width: 100%;
    min-height: 0;
  }
  .product-section .product-arrow { display: none; }
  .product-showcase { padding-left: 24px; padding-right: 24px; }
}
/* 白底大卡片：图 + 右下角 logo + 标题居中 */
.product-card {
  background: #fff;
  border: 1px solid #eee;
  border-radius: 6px;
  overflow: hidden;
  text-align: center;
  box-shadow: 0 1px 8px rgba(0,0,0,0.04);
  transition: box-shadow 0.25s, border-color 0.25s;
}
.product-card:hover {
  box-shadow: 0 6px 24px rgba(0,0,0,0.08);
  border-color: #e0e0e0;
}
.product-card a { text-decoration: none; color: inherit; display: block; }
.product-card a:hover .name { color: var(--theme-color); }
.product-card .pic {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  background: #f5f5f5;
  overflow: hidden;
}
.product-card .pic img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}
.product-card:hover .pic img { transform: scale(1.03); }
.product-card-logo {
  position: absolute;
  right: 10px;
  bottom: 10px;
  font-size: 11px;
  color: #333;
  background: linear-gradient(135deg, #fff8e6 0%, #ffe4b5 100%);
  padding: 4px 10px;
  border-radius: 4px;
  font-weight: 600;
  letter-spacing: 0.5px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
.product-card-info {
  padding: 20px 16px;
}
.product-card .name {
  display: block;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.4;
  color: #333;
  margin: 0;
  transition: color 0.2s;
}
.product-more-wrap { text-align: center; margin-top: 40px; }
/* 产品列表页等仍用普通网格 */
.product-grid:not(.product-grid--ref) {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 28px;
}
.product-more-wrap .btn-theme--outline {
  background: #fff !important;
  color: var(--theme-color) !important;
  border: 2px solid var(--theme-color);
  padding: 14px 40px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
}
.product-more-wrap .btn-theme--outline:hover {
  background: var(--theme-color) !important;
  color: #fff !important;
}

/* 数据块 - 全宽蓝底 */
.data-row {
  display: flex;
  justify-content: center;
  gap: 80px;
  flex-wrap: wrap;
  padding: 56px 24px;
  background: var(--theme-color);
  color: #fff;
  margin: 0;
  max-width: 100%;
}
.data-item { text-align: center; }
.data-item .number { font-size: 42px; font-weight: bold; letter-spacing: 1px; }
.data-item .unit { font-size: 22px; margin-left: 4px; font-weight: normal; opacity: 0.95; }
.data-item .label { font-size: 15px; margin-top: 10px; opacity: 0.95; }

/* 新闻列表 - 卡片式 */
.news-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}
.news-item {
  display: flex;
  gap: 18px;
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 8px;
  overflow: hidden;
  padding: 0;
  box-shadow: 0 2px 12px rgba(0,0,0,0.06);
  transition: box-shadow 0.3s, border-color 0.3s;
}
.news-item:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  border-color: rgba(var(--theme-color-rgb), 0.3);
}
.news-item a { text-decoration: none; color: inherit; display: flex; gap: 18px; flex: 1; min-width: 0; }
.news-item a:hover { color: var(--theme-color); }
.news-item .thumb {
  width: 140px;
  min-width: 140px;
  height: 105px;
  background: #f0f0f0;
  overflow: hidden;
}
.news-item .thumb img { width: 100%; height: 100%; object-fit: cover; }
.news-item .title { font-size: 16px; font-weight: 600; margin-bottom: 8px; line-height: 1.4; }
.news-item .date { font-size: 13px; color: var(--text-muted); margin-bottom: 6px; }
.news-item .summary {
  font-size: 14px;
  color: var(--text-secondary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.5;
}
.news-item > a > div:last-child { padding: 16px 16px 16px 0; flex: 1; min-width: 0; }

/* ========== 联系我们 + 留言（参考深色风格：左侧信息 + 右侧表单 + 侧边竖条 + 从下往上渐入） ========== */
.contact-section {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  justify-content: center;
  align-items: flex-start;
  background: #2C3041;
  color: #F0F0F0;
  padding: 56px 24px 48px;
  margin: 0;
  max-width: 100%;
}

/* 左侧竖条「在线留言」 */
.contact-side-tab {
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  padding: 20px 8px;
  background: var(--theme-color);
  color: #fff;
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  writing-mode: vertical-rl;
  letter-spacing: 4px;
  border-radius: 0 8px 8px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}
.contact-side-tab:hover { background: var(--theme-color-dark); color: #fff; }

.contact-section-inner {
  flex: 1 1 100%;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  gap: 48px;
  justify-content: space-between;
  align-items: flex-start;
}

/* 左侧：Logo + 联系方式（滚动渐入） */
.contact-info {
  flex: 1;
  min-width: 260px;
  max-width: 420px;
  font-size: 15px;
  line-height: 2;
}
.contact-info.contact-animate {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.contact-info.contact-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.contact-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}
.contact-logo-img { width: 48px; height: 48px; object-fit: contain; }
.contact-logo-text {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  line-height: 1.4;
  letter-spacing: 0.5px;
}
.contact-line { margin: 12px 0; color: #E8E8E8; }

/* 右侧：留言表单（深色输入框 + 蓝色提交，滚动渐入） */
.contact-form-wrap {
  flex: 1;
  min-width: 320px;
  max-width: 460px;
  color: #F0F0F0;
}
.contact-form-wrap.contact-animate {
  opacity: 0;
  transform: translateY(36px);
  transition: opacity 0.6s ease-out 0.15s, transform 0.6s ease-out 0.15s;
}
.contact-form-wrap.contact-animate.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.contact-form-title {
  margin: 0 0 24px 0;
  font-size: 20px;
  color: #fff;
  font-weight: 600;
}
.contact-section .form_item { margin-bottom: 20px; }
.contact-section .form_item label {
  display: block;
  margin-bottom: 8px;
  font-size: 14px;
  color: #F0F0F0;
  font-weight: 500;
}
.contact-section .form_item label .req { color: #e74c3c; }
.contact-section .form_item input,
.contact-section .form_item textarea {
  width: 100%;
  padding: 12px 14px;
  border: none;
  border-radius: 4px;
  font-size: 15px;
  font-family: inherit;
  background: #4C4F5D;
  color: #fff;
  transition: background 0.2s;
  box-sizing: border-box;
}
.contact-section .form_item input::placeholder,
.contact-section .form_item textarea::placeholder { color: #aaa; }
.contact-section .form_item input:focus,
.contact-section .form_item textarea:focus {
  background: #5a5d6e;
  outline: none;
}
.contact-section .form_item textarea { min-height: 120px; resize: vertical; }
.contact-submit {
  width: 100%;
  padding: 14px;
  font-size: 16px;
  border-radius: 4px;
  cursor: pointer;
  border: none;
  background: var(--theme-color);
  color: #fff;
  transition: background 0.2s;
}
.contact-submit:hover { background: var(--theme-color-dark); }

/* 通用表单项（其他页面沿用） */
.form_item { margin-bottom: 18px; }
.form_item label { display: block; margin-bottom: 8px; font-size: 14px; color: var(--text-secondary); font-weight: 500; }
.form_item input,
.form_item textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 15px;
  font-family: inherit;
  transition: border-color 0.2s;
}
.form_item input:focus,
.form_item textarea:focus {
  border-color: var(--theme-color);
  outline: none;
}
.form_item textarea { min-height: 110px; resize: vertical; }

/* ========== 页脚（底部分割条） ========== */
.site-footer {
  background: #333;
  color: var(--text-muted);
  padding: 20px 24px;
  text-align: center;
}
.site-footer p { margin: 10px 0; font-size: 14px; }
.site-footer a { color: var(--text-muted); text-decoration: none; transition: color 0.2s; }
.site-footer a:hover { color: var(--theme-color); }

/* ========== 返回顶部（圆形蓝钮 + 箭头） ========== */
.back-top-btn {
  display: none;
  position: fixed;
  right: 24px;
  bottom: 48px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--theme-color);
  color: #fff;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.25);
  transition: background 0.2s, transform 0.2s;
  z-index: 999;
}
.back-top-btn:hover { background: var(--theme-color-dark); transform: translateY(-2px); }
.back-top-btn.is-visible { display: flex; }
.back-top-btn svg { display: block; }

/* ========== 移动端响应式样式 ========== */
@media (max-width: 991px) {
  /* 头部调整 */
  .header-inner {
    padding: 0 16px;
  }
  .site-logo img {
    height: 48px;
  }
  .site-title h1 {
    font-size: 18px;
  }
  .site-title .en {
    font-size: 12px;
  }
  
  /* Banner 调整 */
  .section-banner {
    width: 100%;
    margin: 0;
    aspect-ratio: 16 / 9;
  }
  .banner-caption {
    padding: 16px;
  }
  
  /* Section 间距调整 */
  .section {
    padding: 48px 24px;
  }
  .section-title {
    margin-bottom: 36px;
  }
  .section-title h2 {
    font-size: 24px;
  }
  
  /* 优势列表 - 移动端单列 */
  .advantage-list {
    flex-direction: column;
    margin: 0;
    gap: 20px;
  }
  .advantage-item {
    min-width: 100%;
    max-width: 100%;
    padding: 32px 24px;
  }
  
  /* 关于我们 - 移动端垂直布局 */
  .about-row {
    flex-direction: column;
    gap: 32px;
    padding: 48px 24px;
  }
  .about-text {
    min-width: 100%;
    max-width: 100%;
  }
  .about-text h2 {
    font-size: 24px;
  }
  .about-text p {
    font-size: 15px;
    line-height: 1.8;
  }
  .about-img {
    flex: 1 1 100%;
    min-height: 240px;
  }
  .about-img img {
    min-height: 240px;
  }
  
  /* 流程网格 - 移动端单列 */
  .process-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  
  /* 产品展示 - 移动端优化 */
  .product-showcase {
    padding: 0 16px 32px;
  }
  .product-arrow {
    display: none;
  }
  
  /* 数据块 - 移动端调整 */
  .data-row {
    gap: 40px;
    padding: 40px 16px;
  }
  .data-item .number {
    font-size: 36px;
  }
  .data-item .unit {
    font-size: 20px;
  }
  
  /* 新闻列表 - 移动端单列 */
  .news-list {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .news-item {
    flex-direction: column;
  }
  .news-item a {
    flex-direction: column;
  }
  .news-item .thumb {
    width: 100%;
    min-width: 100%;
    height: 200px;
  }
  .news-item > a > div:last-child {
    padding: 16px;
  }
  
  /* 联系我们 - 移动端垂直布局 */
  .contact-section {
    padding: 40px 16px;
    gap: 32px;
  }
  .contact-section-inner {
    flex-direction: column;
    gap: 32px;
  }
  .contact-info,
  .contact-form-wrap {
    min-width: 100%;
    max-width: 100%;
  }
  .contact-side-tab {
    display: none;
  }
  .contact-info.contact-animate,
  .contact-form-wrap.contact-animate {
    opacity: 1;
    transform: none;
  }
  .contact-info.contact-animate.is-visible,
  .contact-form-wrap.contact-animate.is-visible {
    opacity: 1;
    transform: none;
  }
  
  /* 返回顶部按钮 - 移动端调整 */
  .back-top-btn {
    right: 16px;
    bottom: 32px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 576px) {
  /* 超小屏幕进一步优化 */
  .header-inner {
    padding: 12px 16px;
  }
  .site-logo img {
    height: 40px;
  }
  .site-title h1 {
    font-size: 16px;
  }
  .site-title .en {
    font-size: 11px;
  }
  
  .section {
    padding: 32px 16px;
  }
  .section-title h2 {
    font-size: 22px;
  }
  
  .advantage-item {
    padding: 24px 20px;
  }
  .advantage-item .advantage-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 18px;
  }
  .advantage-item .advantage-icon .adv-icon-svg svg {
    width: 30px;
    height: 30px;
  }
  .advantage-item .item-title {
    font-size: 16px;
  }
  .advantage-item .item-desc {
    font-size: 14px;
  }
  
  .about-row {
    padding: 32px 16px;
  }
  .about-text h2 {
    font-size: 22px;
  }
  .about-text p {
    font-size: 14px;
  }
  
  .process-grid {
    gap: 28px;
  }
  .process-icon {
    width: 64px;
    height: 64px;
  }
  .process-card .process-title {
    font-size: 16px;
  }
  .process-card .process-desc {
    font-size: 13px;
  }
  
  .product-showcase {
    padding: 0 12px 24px;
  }
  
  .data-row {
    gap: 32px;
    padding: 32px 12px;
  }
  .data-item .number {
    font-size: 32px;
  }
  .data-item .label {
    font-size: 14px;
  }
  
  .contact-section {
    padding: 32px 12px;
  }
  .contact-form-title {
    font-size: 18px;
  }
  
  .btn-theme {
    padding: 10px 24px;
    font-size: 14px;
  }
  
  .back-top-btn {
    width: 40px;
    height: 40px;
    right: 12px;
    bottom: 24px;
  }
}

/* 首页「MORE+」等按钮居中 */
.section .btn-theme { margin-top: 8px; }

/* ========== 详情页样式 ========== */
/* 产品详情页 */
.product-detail-title {
  font-size: 32px;
  font-weight: bold;
  color: #1f2937;
  margin: 0 0 24px 0;
  line-height: 1.3;
}
.product-detail-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-top: 32px;
}
.product-detail-images {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.product-main-image {
  width: 100%;
}
.product-thumbnails {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.thumbnail-item {
  cursor: pointer;
  transition: transform 0.2s;
}
.thumbnail-item:hover {
  transform: scale(1.05);
}
.thumbnail-item img:hover {
  border-color: var(--theme-color) !important;
}
.product-detail-info h3 {
  font-size: 20px;
  font-weight: bold;
  color: #1f2937;
  margin: 0 0 16px 0;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--theme-color);
}
.product-summary,
.product-content {
  margin-bottom: 32px;
}
.product-summary p {
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-secondary);
}
.product-content {
  font-size: 16px;
  line-height: 2;
  color: var(--text-primary);
}
.product-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 16px 0;
}
.product-video {
  margin-top: 32px;
}

/* 文章详情页 */
.article-detail-title {
  font-size: 32px;
  font-weight: bold;
  color: #1f2937;
  margin: 0 0 16px 0;
  line-height: 1.4;
}
.article-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-muted);
}
.article-content {
  font-size: 16px;
  line-height: 2;
  color: var(--text-primary);
}
.article-content img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  margin: 16px 0;
}
.article-content p {
  margin-bottom: 16px;
}
.article-content h2,
.article-content h3 {
  margin-top: 32px;
  margin-bottom: 16px;
  color: #1f2937;
}

/* 面包屑导航 */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumb-item {
  display: flex;
  align-items: center;
}
.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  padding: 0 8px;
  color: var(--text-muted);
}
.breadcrumb-item a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb-item a:hover {
  color: var(--theme-color);
}
.breadcrumb-item.active {
  color: var(--text-primary);
}

/* 详情页移动端响应式 */
@media (max-width: 991px) {
  .product-detail-content {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .product-thumbnails {
    grid-template-columns: repeat(3, 1fr);
  }
  .product-detail-title,
  .article-detail-title {
    font-size: 24px;
  }
  .product-detail-info h3 {
    font-size: 18px;
  }
}