/* ===== 全局重置 & 变量 ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
}
body {
  background-color: #f8fbf8;
  color: #1e2f24;
}
:root {
  --primary-green: #3EB134;
  --light-green: #e8f5e6;
  --dark-green: #1f5a1a;
  --gray-bg: #e2e8e2;
  --white: #ffffff;
  --shadow: 0 8px 30px rgba(62, 177, 52, 0.10);
  --font-base: 16px;
  --font-sm: 0.875rem;
  --font-md: 1rem;
  --font-lg: 1.125rem;
  --font-xl: 1.25rem;
  --font-2xl: 1.5rem;
  --font-3xl: 2rem;
  --font-4xl: 2.5rem;
  --font-5xl: 3rem;
}
html {
  font-size: var(--font-base);
}
body {
  font-size: var(--font-md);
  line-height: 1.6;
}
h1 { font-size: var(--font-5xl); font-weight: 700; line-height: 1.2; }
h2 { font-size: var(--font-4xl); font-weight: 600; line-height: 1.25; }
h3 { font-size: var(--font-3xl); font-weight: 600; line-height: 1.3; }
h4 { font-size: var(--font-2xl); font-weight: 600; line-height: 1.35; }
h5 { font-size: var(--font-xl); font-weight: 600; line-height: 1.4; }
h6 { font-size: var(--font-lg); font-weight: 600; line-height: 1.45; }
p { font-size: var(--font-sm); line-height: 1.7; color: #2d4a37; }
small { font-size: var(--font-sm); }

.container {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   导航栏（全站统一）
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background-color: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
  padding: 18px 0 12px;
}
.navbar.scrolled {
  background-color: rgba(255,255,255,0.92);
  backdrop-filter: blur(6px);
  box-shadow: 0 4px 20px rgba(0,20,0,0.06);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  position: relative;
}
.navbar-left {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo {
  font-size: 1.5rem;
  font-weight: 600;
  color: white;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.logo img {
  height: 40px;
  width: auto;
  display: block;
}
.logo i {
  font-size: 1.8rem;
  color: var(--primary-green);
}
.navbar.scrolled .logo {
  color: var(--dark-green);
}
.navbar.scrolled .logo i {
  color: var(--primary-green);
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.nav-menu > li {
  list-style: none;
  position: relative;
}
.nav-menu > li > a {
  text-decoration: none;
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  padding: 6px 16px;
  font-size: var(--font-md);
  transition: 0.2s;
  border-radius: 0;
  background: transparent;
  letter-spacing: 0.3px;
  border-bottom: 2px solid transparent;
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.navbar.scrolled .nav-menu > li > a {
  color: #1e3a2f;
}
.nav-menu > li > a:hover {
  color: white;
  border-bottom-color: var(--primary-green);
}
.navbar.scrolled .nav-menu > li > a:hover {
  color: var(--primary-green);
  border-bottom-color: var(--primary-green);
}
.nav-menu > li > a.active {
  color: white;
  border-bottom-color: var(--primary-green);
}
.navbar.scrolled .nav-menu > li > a.active {
  color: var(--primary-green);
  border-bottom-color: var(--primary-green);
}
.dropdown-content {
  position: absolute;
  top: 130%;
  left: 0;
  min-width: 220px;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.06);
  border-radius: 16px;
  padding: 8px 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all 0.2s ease;
  border: 1px solid #e4f0e2;
  z-index: 100;
}
.nav-menu > li:hover .dropdown-content {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.dropdown-content li {
  list-style: none;
}
.dropdown-content li a {
  display: block;
  padding: 8px 20px;
  color: #1e3a2f;
  text-decoration: none;
  font-size: var(--font-sm);
  transition: 0.1s;
  border-left: 3px solid transparent;
}
.dropdown-content li a:hover {
  background: var(--light-green);
  border-left-color: var(--primary-green);
  color: var(--dark-green);
}
.dropdown-content li a.active {
  background: var(--light-green);
  border-left-color: var(--primary-green);
  color: var(--dark-green);
}
/* ============================================================
   导航 - 产品中心二级子菜单（仅桌面端）
   ============================================================ */
.dropdown-content > li.has-submenu-item {
  position: relative;
}
.dropdown-content > li.has-submenu-item > a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-right: 16px;
}
.dropdown-content > li.has-submenu-item > a .submenu-arrow {
  font-size: 0.6rem;
  color: var(--primary-green);
  opacity: 0.5;
  transition: transform 0.2s, opacity 0.2s;
  margin-left: 8px;
}
.dropdown-content > li.has-submenu-item:hover > a {
  background: var(--light-green);
  border-left-color: var(--primary-green);
  color: var(--dark-green);
}
.dropdown-content > li.has-submenu-item:hover > a .submenu-arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* 二级菜单容器 */
.submenu-content {
  position: absolute;
  top: 0;
  left: 100%;
  min-width: 200px;
  background: rgba(255,255,255,0.98);
  backdrop-filter: blur(4px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.08);
  border-radius: 12px;
  padding: 8px 0;
  list-style: none;
  opacity: 0;
  visibility: hidden;
  transform: translateX(6px);
  transition: all 0.22s ease;
  border: 1px solid #e4f0e2;
  z-index: 110;
}
.dropdown-content > li.has-submenu-item:hover > .submenu-content {
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}
.submenu-content li {
  list-style: none;
}
.submenu-content li a {
  display: block;
  padding: 7px 18px;
  color: #1e3a2f;
  text-decoration: none;
  font-size: var(--font-sm);
  transition: 0.15s;
  border-left: 3px solid transparent;
  white-space: nowrap;
}
.submenu-content li a:hover {
  background: var(--light-green);
  border-left-color: var(--primary-green);
  color: var(--dark-green);
}

/* ===== 搜索框 ===== */
.search-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  margin: 0 6px;
  z-index: 5;
}
.search-wrapper input {
  border: 1px solid rgba(255,255,255,0.2);
  background: rgba(255,255,255,0.08);
  backdrop-filter: blur(2px);
  border-radius: 40px;
  padding: 6px 14px 6px 36px;
  font-size: var(--font-sm);
  color: white;
  width: 150px;
  transition: 0.3s;
  outline: none;
  font-weight: 400;
}
.search-wrapper input::placeholder {
  color: rgba(255,255,255,0.6);
  font-weight: 300;
}
.search-wrapper input:focus {
  width: 200px;
  background: rgba(255,255,255,0.15);
  border-color: var(--primary-green);
}
.navbar.scrolled .search-wrapper input {
  border-color: #b8d9c4;
  background: rgba(255,255,255,0.6);
  color: #1e3a2f;
}
.navbar.scrolled .search-wrapper input::placeholder {
  color: #3f604a;
}
.navbar.scrolled .search-wrapper input:focus {
  background: white;
  border-color: var(--primary-green);
}
.search-wrapper i {
  position: absolute;
  left: 12px;
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  pointer-events: none;
  padding-top:8px;
}
.navbar.scrolled .search-wrapper i {
  color: #3f604a;
}

/* ===== 语言切换（桌面版） ===== */
.lang-switch {
  position: relative;
  cursor: pointer;
  color: rgba(255,255,255,0.8);
  font-size: var(--font-sm);
  padding: 4px 12px 4px 16px;
  border-radius: 30px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(2px);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 4px;
  z-index: 20;
  flex-shrink: 0;
}
.navbar.scrolled .lang-switch {
  color: #1e3a2f;
  background: var(--light-green);
  border-color: #b8d9c4;
}
.lang-switch i {
  font-size: 0.7rem;
  margin-left: 4px;
}
.lang-dropdown {
  position: absolute;
  top: 120%;
  right: 0;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  padding: 6px 0;
  min-width: 100px;
  opacity: 0;
  visibility: hidden;
  transition: 0.15s;
  border: 1px solid #e0eee4;
  z-index: 30;
}
.lang-switch:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
}
.lang-dropdown a {
  display: block;
  padding: 6px 20px;
  color: #1e3a2f;
  text-decoration: none;
  font-size: var(--font-sm);
}
.lang-dropdown a:hover {
  background: var(--light-green);
}

/* ===== 语言切换（手机版） ===== */
.lang-switch-mobile {
  display: none;
  position: relative;
  cursor: pointer;
  color: rgba(255,255,255,0.8);
  font-size: var(--font-sm);
  padding: 4px 12px 4px 16px;
  border-radius: 30px;
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(2px);
  border: 1px solid rgba(255,255,255,0.1);
  align-items: center;
  gap: 4px;
  z-index: 20;
  flex-shrink: 0;
  margin-left: 0;
}
.navbar.scrolled .lang-switch-mobile {
  color: #1e3a2f;
  background: var(--light-green);
  border-color: #b8d9c4;
}
.lang-switch-mobile i {
  font-size: 0.7rem;
  margin-left: 4px;
}
.lang-switch-mobile .lang-dropdown {
  position: absolute;
  top: 120%;
  right: 0;
  background: white;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  padding: 6px 0;
  min-width: 100px;
  opacity: 0;
  visibility: hidden;
  transition: 0.15s;
  border: 1px solid #e0eee4;
  z-index: 30;
}
.lang-switch-mobile:hover .lang-dropdown {
  opacity: 1;
  visibility: visible;
}
.lang-switch-mobile .lang-dropdown a {
  display: block;
  padding: 6px 20px;
  color: #1e3a2f;
  text-decoration: none;
  font-size: var(--font-sm);
}
.lang-switch-mobile .lang-dropdown a:hover {
  background: var(--light-green);
}

.mobile-toggle {
  display: none;
  font-size: 1.8rem;
  color: white;
  background: transparent;
  border: none;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: 0;
}
.navbar.scrolled .mobile-toggle {
  color: var(--dark-green);
}
.navbar-right-mobile {
  display: none;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

/* ============================================================
   BANNER（全站统一，高度400px）
   ============================================================ */
.page-banner {
  width: 100%;
  height: 400px;
  min-height: 400px;
  max-height: 400px;
  position: relative;
  overflow: hidden;
  background: #0d3d1a;
  margin-top: 0;
}
.page-banner .banner-bg {
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background-color: #0a3a1a;
}

/* 蒙板层 */
.page-banner .banner-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0.3) 100%);
  z-index: 1;
}

/* 文字内容要浮在蒙板上面 */
.page-banner .banner-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: white;
  padding: 20px 30px;
}
.page-banner .banner-content h1 {
  font-size: var(--font-4xl);
  font-weight: 700;
  letter-spacing: 4px;
  margin-bottom: 8px;
  text-shadow: 0 2px 20px rgba(0,0,0,0.3);
}
.page-banner .banner-content p {
  font-size: var(--font-lg);
  color: rgba(255,255,255,0.85);
  letter-spacing: 2px;
  font-weight: 300;
  text-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

/* ============================================================
   首页 - 轮播图
   ============================================================ */
.hero-carousel {
      width: 100%;
      height: 600px;
      min-height: 600px;
      max-height: 600px;
      position: relative;
      overflow: hidden;
      background: #0d3d1a;
    }
    .carousel-track {
      display: flex;
      width: 100%;
      height: 100%;
      transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    }
    .carousel-slide {
      position: relative;
      min-width: 100%;
      height: 100%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
      font-size: var(--font-4xl);
      font-weight: 300;
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
    }
    .carousel-slide::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: linear-gradient(180deg, rgba(0,0,0,0.15) 0%, rgba(0,0,0,0.35) 100%);
      z-index: 1;
    }
    /* PC端轮播背景图 */
    .carousel-slide:nth-child(1) {
      background-image: url('/images/banner1.jpg');
    }
    .carousel-slide:nth-child(2) {
      background-image: url('/images/banner2.jpg');
    }
    .carousel-slide:nth-child(3) {
      background-image: url('/images/banner3.jpg');
    }
    /* 降级方案：图片加载失败时显示渐变背景 */
    .carousel-slide:nth-child(1) {
      background-color: #0a3a1a;
      background-image: url('/images/banner1.jpg'), linear-gradient(145deg, #0a3a1a, #1b6b2e);
    }
    .carousel-slide:nth-child(2) {
      background-color: #0f4a22;
      background-image: url('/images/banner2.jpg'), linear-gradient(145deg, #0f4a22, #1f7a3a);
    }
    .carousel-slide:nth-child(3) {
      background-color: #0c3d1e;
      background-image: url('/images/banner3.jpg'), linear-gradient(145deg, #0c3d1e, #2a7a42);
    }
    .carousel-slide h2 {
      position: relative;
      z-index: 2;
      padding: 20px 48px;
      border-radius: 20px;
      font-weight: 400;
      letter-spacing: 6px;
      font-size: var(--font-4xl);
      text-align: center;
    }
    .carousel-indicators {
      position: absolute;
      bottom: 30px;
      left: 50%;
      transform: translateX(-50%);
      display: flex;
      gap: 14px;
      z-index: 10;
    }
    .carousel-indicators span {
      width: 14px;
      height: 14px;
      border-radius: 50%;
      background: rgba(255,255,255,0.3);
      cursor: pointer;
      transition: 0.3s;
      border: 1px solid rgba(255,255,255,0.1);
    }
    .carousel-indicators span.active {
      background: var(--primary-green);
      transform: scale(1.2);
      border-color: white;
    }

/* ============================================================
   首页 - 各版块通用
   ============================================================ */
.section-title {
  text-align: center;
  margin-bottom: 40px;
}
.section-title h2 {
  font-size: var(--font-3xl);
  font-weight: 600;
  color: var(--dark-green);
  letter-spacing: 2px;
}
.section-title p {
  font-size: var(--font-lg);
  color: #3f604a;
  margin-top: 6px;
}

.block-bg-white {
  background: white;
  padding: 60px 0;
}
.block-bg-gray {
  background: var(--gray-bg);
  padding: 60px 0;
}
.block-bg-light {
  background: #f6faf6;
  padding: 60px 0;
}

/* ============================================================
   首页 - 产品展示
   ============================================================ */
.grid-product {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.prod-card {
  background: white;
  border-radius: 10px;
  padding: 18px 16px 22px;
  border: 1px solid #e2eee4;
  box-shadow: 0 4px 12px rgba(0,30,10,0.02);
  transition: 0.25s;
  text-align: center;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}
.prod-card:hover {
  transform: scale(1.02) translateY(-6px);
  box-shadow: 0 20px 30px rgba(62, 177, 52, 0.12);
  border-color: var(--primary-green);
}
.prod-img {
  height: 300px;
  border-radius: 10px;
  margin-bottom: 14px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f0f5f0;
}
.prod-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.prod-img .placeholder-icon {
  font-size: 3rem;
  color: var(--dark-green);
  opacity: 0.3;
}
.prod-card h4 {
  font-weight: 600;
  color: var(--dark-green);
  font-size: var(--font-lg);
}
.prod-card p {
  font-size: var(--font-sm);
  color: #696b69;
  margin-top: 10px;
}

/* ============================================================
   首页 - 关于我们
   ============================================================ */
    /* ===== 关于我们 - 背景图固定 ===== */
    .block-bg-about {
      padding: 120px 0;
      background-image: url('/images/about-bg.jpg');
      background-size: cover;
      background-position: center;
      background-repeat: no-repeat;
      background-attachment: fixed;
      position: relative;
    }
.about-wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 40px;
  background: rgba(255, 255, 255, 0.78);
  backdrop-filter: blur(4px);
  border-radius: 18px;
  padding: 40px 44px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  border: 1px solid rgba(255,255,255,0.4);
}
.about-text {
  flex: 1 1 45%;
}
.about-text h3 {
  font-size: var(--font-3xl);
  color: var(--dark-green);
  display: flex;
  align-items: center;
  gap: 10px;
}
.about-text h3 i {
  color: var(--primary-green);
}
.about-text p {
  font-size: var(--font-sm);
  margin: 16px 0;
  line-height: 1.8;
  color: #1a3e2b;
}
.about-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 24px 40px;
  margin: 20px 0 10px;
}
.about-stats .item {
  font-size: var(--font-md);
}
.about-stats .num {
  font-size: var(--font-3xl);
  font-weight: 700;
  color: var(--primary-green);
}
.btn-about {
  display: inline-block;
  margin-top: 20px;
  background: var(--primary-green);
  color: white;
  padding: 12px 36px;
  border-radius: 40px;
  font-weight: 600;
  font-size: var(--font-sm);
  text-decoration: none;
  transition: 0.25s;
  border: none;
  cursor: pointer;
}
.btn-about:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(62,177,52,0.25);
}
.about-video {
  flex: 1 1 30%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.about-video .slogan {
  font-size: var(--font-2xl);
  font-weight: 700;
  color: var(--primary-green);
  text-align: center;
  line-height: 1.3;
  letter-spacing: 1px;
}
.about-video .video-wrapper {
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  background: #0a2f1b;
  box-shadow: 0 8px 24px rgba(0,0,0,0.06);
  border: 2px solid #c6e0ce;
}
.about-video .video-wrapper video {
  width: 100%;
  display: block;
}

/* ============================================================
   首页 - 解决方案（也用于 solutions.html 列表页）
   ============================================================ */
.solution-list-section {
      padding: 60px 0;
      background: #f6faf6;
    }
.grid-solution{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.grid-solution-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.sol-card {
  background: white;
  border-radius: 10px;
  padding: 18px 16px 22px;
  text-align: center;
  box-shadow: 0 6px 18px rgba(62, 177, 52, 0.08);
  transition: all 0.25s ease;
  border: 1px solid #eaf3e8;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  overflow: hidden;
}
.sol-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 16px 32px rgba(62, 177, 52, 0.15);
  border-color: var(--primary-green);
}
.sol-card .sol-img {
  width: 100%;
  height: 250px;
  border-radius: 8px;
  overflow: hidden;
  margin-bottom: 14px;
  background: #f0f5f0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.sol-card .sol-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.sol-card .sol-img .placeholder-icon {
  font-size: 3rem;
  color: var(--dark-green);
  opacity: 0.25;
}
.sol-card h4 {
  font-size: var(--font-lg);
  font-weight: 600;
  margin: 6px 0 4px;
  color: var(--dark-green);
}
.sol-card p {
  font-size: var(--font-sm);
  color: #696b69;
  line-height: 1.5;
  margin-top: 10px;
}

/* ============================================================
   首页 - 新闻资讯（也用于 news.html 列表页）
   ============================================================ */
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin: 20px 0 30px;
}
.news-item {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,0.04);
  transition: 0.3s;
  border: 1px solid #eaf0e8;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  height: 100%;
}
.news-item:hover {
  box-shadow: 0 12px 30px rgba(62,177,52,0.10);
  transform: translateY(-4px);
}
.news-img {
  height: 260px;
  flex-shrink: 0;
  overflow: hidden;
  background: #dce8de;
  display: flex;
  align-items: center;
  justify-content: center;
}
.news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.news-body {
  padding: 20px 22px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.news-body h4 {
  font-size: var(--font-md);
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--dark-green);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body .news-meta {
  color: #487a58;
  font-size: var(--font-sm);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.news-body .news-meta i {
  font-size: 0.75rem;
}
.news-body p {
  font-size: var(--font-sm);
  color: #3f604a;
  line-height: 1.7;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-body .news-readmore {
  margin-top: 14px;
  color: var(--primary-green);
  font-weight: 600;
  font-size: var(--font-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: 0.2s;
}
.news-body .news-readmore i {
  transition: 0.2s;
}
.news-item:hover .news-readmore i {
  transform: translateX(4px);
}

/* ============================================================
   首页 - 采购通栏
   ============================================================ */
.block-bg-cta {
  padding: 60px 0;
  background-size: cover;
  background-image: url('/images/cta-bg.jpg');
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
  position: relative;
}
.cta-wrap {
  max-width: 600px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.28);
  backdrop-filter: blur(4px);
  border-radius: 18px;
  padding: 40px 44px;
  box-shadow: 0 12px 40px rgba(0,0,0,0.08);
  border: 1px solid rgba(255,255,255,0.4);
  text-align: center;
  color: #1a3e2b;
}
.cta-wrap h2 {
  font-size: var(--font-3xl);
  font-weight: 600;
  color: var(--dark-green);
}
.cta-wrap h2 i {
  color: var(--primary-green);
  margin-right: 10px;
}
.cta-wrap p {
  font-size: var(--font-lg);
  margin: 16px 0 24px;
  color: #2d4a37;
}
.cta-wrap a {
  display: inline-block;
  background: var(--primary-green);
  color: white;
  padding: 14px 44px;
  border-radius: 60px;
  font-weight: 600;
  font-size: var(--font-md);
  text-decoration: none;
  transition: 0.25s;
  border: none;
  cursor: pointer;
}
.cta-wrap a:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(62,177,52,0.25);
}

/* ============================================================
   关于我们页 - 二级导航
   ============================================================ */
.subnav-section {
  background: white;
  border-bottom: 2px solid #eaf3e8;
  position: sticky;
  top: 76px;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(0,0,0,0.03);
}
.subnav-section .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 0 24px;
}
.subnav-item {
  display: inline-block;
  padding: 16px 28px;
  font-size: var(--font-md);
  font-weight: 500;
  color: #3f604a;
  text-decoration: none;
  border-bottom: 3px solid transparent;
  transition: 0.25s ease;
  cursor: pointer;
  position: relative;
  background: transparent;
  border-top: none;
  border-left: none;
  border-right: none;
  font-family: inherit;
}
.subnav-item:hover {
  color: var(--dark-green);
  background: var(--light-green);
}
.subnav-item.active {
  color: var(--primary-green);
  border-bottom-color: var(--primary-green);
  font-weight: 600;
}
.subnav-item i {
  margin-right: 8px;
  font-size: 0.9rem;
}

/* ============================================================
   关于我们页 - 内容面板
   ============================================================ */
.about-content-section {
  padding: 60px 0;
  background: #f8fbf8;
}
.about-content-section .content-panel {
  display: none;
  animation: fadeInUp 0.5s ease;
}
.about-content-section .content-panel.active {
  display: block;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.company-intro {
  display: flex;
  flex-wrap: wrap;
  gap: 50px;
  align-items: flex-start;
}
.company-intro .intro-text {
  flex: 1 1 55%;
}
.company-intro .intro-text h3 {
  color: var(--dark-green);
  margin-bottom: 16px;
  font-size: var(--font-2xl);
}
.company-intro .intro-text h3 i {
  color: var(--primary-green);
  margin-right: 10px;
}
.company-intro .intro-text p {
  font-size: var(--font-md);
  line-height: 1.9;
  color: #2d4a37;
  margin-bottom: 16px;
}
.company-intro .intro-image {
  flex: 1 1 35%;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.08);
  border-radius: 10px;
  margin-top:50px;
}
.company-intro .intro-image img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  display: block;
  margin-top: 10px;
  border-radius: 10px;
}

.qualification-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.qual-card {
  background: white;
  border-radius: 12px;
  padding: 24px 20px;
  text-align: center;
  border: 1px solid #eaf3e8;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.qual-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(62,177,52,0.10);
  border-color: var(--primary-green);
}
.qual-card .qual-icon {
  font-size: 2.8rem;
  color: var(--primary-green);
  margin-bottom: 12px;
}
.qual-card .qual-icon img{
  width:100%;
}
.qual-card h5 {
  color: var(--dark-green);
  font-size: var(--font-md);
}
.qual-card p {
  font-size: var(--font-sm);
  color: #696b69;
  margin-top: 6px;
}

.honor-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 30px;
}
.honor-card {
  background: white;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #eaf3e8;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.honor-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(62,177,52,0.10);
  border-color: var(--primary-green);
}
.honor-card .honor-img {
  overflow: hidden;
  background: #f0f5f0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.honor-card .honor-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.honor-card .honor-body {
  padding: 18px 20px 22px;
}
.honor-card .honor-body h5 {
  color: var(--dark-green);
  font-size: var(--font-sm);
  margin-bottom: 4px;
}
.honor-card .honor-body p {
  font-size: var(--font-sm);
  color: #696b69;
}

.patent-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.patent-card {
  background: white;
  border-radius: 12px;
  padding: 20px;
  text-align: center;
  border: 1px solid #eaf3e8;
  transition: 0.3s;
}
.patent-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(62,177,52,0.08);
  border-color: var(--primary-green);
}
.patent-card .patent-icon {
  font-size: 2.4rem;
  color: var(--primary-green);
  margin-bottom: 8px;
}
.patent-card .patent-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.patent-card h5 {
  color: var(--dark-green);
  font-size: var(--font-sm);
}
.patent-card p {
  font-size: var(--font-sm);
  color: #696b69;
  margin-top: 4px;
}

/* ============================================================
   关于我们页 - 设计标准
   ============================================================ */
.standard-list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px 24px;
  align-items: start;
}
.standard-item {
  background: white;
  border-radius: 10px;
  border: 1px solid #eaf3e8;
  transition: border-color 0.2s, box-shadow 0.2s;
  overflow: hidden;
  box-shadow: 0 2px 6px rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
  height: auto;
  align-self: start;
}
.standard-item:hover {
  border-color: var(--primary-green);
  box-shadow: 0 4px 12px rgba(62,177,52,0.06);
}
.standard-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  cursor: pointer;
  user-select: none;
  background: white;
  transition: background 0.15s;
  flex: 0 0 auto;
  border-bottom: 1px solid transparent;
}
.standard-header:hover {
  background: #f5faf5;
}
.standard-header i:first-child {
  color: var(--primary-green);
  font-size: 1.1rem;
  flex-shrink: 0;
}
.standard-header .std-title {
  flex: 1;
  font-size: var(--font-sm);
  color: #1e3a2f;
  font-weight: 500;
}
.standard-header .std-toggle {
  color: var(--primary-green);
  font-size: 0.85rem;
  transition: transform 0.25s;
  flex-shrink: 0;
}
.standard-header .std-toggle.open {
  transform: rotate(180deg);
}
.standard-detail {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.3s ease;
  padding: 0 18px;
  background: #fafff9;
  border-top: 1px solid transparent;
}
.standard-detail.open {
  max-height: none;          /* 关键：取消最大高度限制 */
  height: auto;
  min-height: 0;             /* 取消原来的 500px 最小高度 */
  padding: 16px 18px 20px;
  border-top-color: #eaf3e8;
  overflow: visible;         /* 图片过高时也不裁剪 */
}
.standard-detail img,
.standard-detail p img {
  width: 100%;
  height: auto;
  display: block;
  object-fit: contain;       /* 保证完整显示，不裁切 */
}
.standard-detail p {
  font-size: var(--font-sm);
  color: #2d4a37;
  line-height: 1.8;
  margin: 0 0 6px 0;
}
.standard-detail ul {
  margin: 0 0 0 18px;
  color: #2d4a37;
  font-size: var(--font-sm);
}
.standard-detail ul li {
  margin: 4px 0;
}

/* ============================================================
   产品展示页（products.html）
   ============================================================ */
.product-list-section {
  padding: 60px 0;
  background: white;
}
.product-list-section .section-title {
  text-align: center;
  margin-bottom: 40px;
}
.product-list-section .section-title h2 {
  font-size: var(--font-3xl);
  font-weight: 600;
  color: var(--dark-green);
  letter-spacing: 2px;
}
.product-list-section .section-title p {
  font-size: var(--font-lg);
  color: #3f604a;
  margin-top: 6px;
}
.grid-product-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.grid-product-list .prod-card p {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}



/* ============================================================
   产品/方案/新闻 详细页（左右两栏布局）
   ============================================================ */
.detail-main {
  padding: 50px 0 60px;
  background: white;
}
.detail-main .back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--primary-green);
  text-decoration: none;
  font-weight: 500;
  font-size: var(--font-sm);
  margin-bottom: 24px;
  transition: 0.2s;
}
.detail-main .back-link:hover {
  color: var(--dark-green);
  transform: translateX(-4px);
}
.detail-two-col {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
}
.detail-left {
  flex: 1 1 62%;
  min-width: 0;
}
.detail-right {
  flex: 1 1 28%;
  min-width: 220px;
  background: #f6faf6;
  border-radius: 16px;
  padding: 28px 24px;
  border: 1px solid #eaf3e8;
  position: sticky;
  top: 100px;
}
.detail-right .right-title {
  font-size: var(--font-md);
  font-weight: 600;
  color: var(--dark-green);
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--light-green);
  display: flex;
  align-items: center;
  gap: 8px;
}
.detail-right .right-title i {
  color: var(--primary-green);
}

/* ----- 产品/方案 详情 ----- */
.detail-left .detail-header {
  display: flex;
  flex-wrap: wrap;
  gap: 28px;
  margin-bottom: 32px;
  align-items: flex-start;
}
.detail-left .detail-header .detail-image {
  flex: 1 1 40%;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 30px rgba(0,0,0,0.06);
  background: #f0f5f0;
}
.detail-left .detail-header .detail-image img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  display: block;
}
.detail-left .detail-header .detail-info {
  flex: 1 1 50%;
}
.detail-left .detail-header .detail-info .detail-tag {
  display: inline-block;
  background: var(--light-green);
  color: var(--primary-green);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: var(--font-sm);
  font-weight: 500;
  margin-bottom: 12px;
}
.detail-left .detail-header .detail-info h2 {
  font-size: var(--font-2xl);
  color: var(--dark-green);
  margin-bottom: 10px;
}
.detail-left .detail-header .detail-info p {
  font-size: var(--font-md);
  line-height: 1.8;
  color: #2d4a37;
}
.detail-left .detail-body {
  border-top: 1px solid #eaf3e8;
  padding-top: 28px;
}
.detail-left .detail-body h3 {
  font-size: var(--font-lg);
  color: var(--dark-green);
  margin: 20px 0 10px;
}
.detail-left .detail-body h3:first-of-type {
  margin-top: 0;
}
.detail-left .detail-body ul {
  margin: 6px 0 14px 22px;
  color: #2d4a37;
  font-size: var(--font-md);
}
.detail-left .detail-body ul li {
  margin: 5px 0;
  line-height: 1.8;
}
.detail-left .detail-body img{max-width: 100%;}
.detail-left .detail-body .highlight-box {
  background: var(--light-green);
  padding: 16px 22px;
  border-radius: 12px;
  border-left: 4px solid var(--primary-green);
  margin: 16px 0;
}
.detail-left .detail-body .highlight-box p {
  margin-bottom: 0;
  font-size: var(--font-sm);
}
.detail-left .detail-body .btn-inquiry {
  display: inline-block;
  margin-top: 16px;
  padding: 10px 36px;
  background: var(--primary-green);
  color: white;
  border-radius: 40px;
  font-weight: 600;
  font-size: var(--font-sm);
  text-decoration: none;
  transition: 0.25s;
  border: none;
  cursor: pointer;
}
.detail-left .detail-body .btn-inquiry:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(62,177,52,0.25);
}

/* ----- 右侧列表项（产品/方案/新闻） ----- */
.right-prod-item,
.right-sol-item,
.right-news-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid #eaf3e8;
  text-decoration: none;
  color: inherit;
  transition: 0.2s;
  cursor: pointer;
}
.right-prod-item:last-child,
.right-sol-item:last-child,
.right-news-item:last-child {
  border-bottom: none;
}
.right-prod-item:hover,
.right-sol-item:hover,
.right-news-item:hover {
  padding-left: 6px;
  background: rgba(62,177,52,0.04);
  border-radius: 8px;
  margin-left: -6px;
  padding-right: 6px;
}
.right-prod-item .right-prod-img,
.right-sol-item .right-sol-img,
.right-news-item .right-news-img {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  border-radius: 8px;
  overflow: hidden;
  background: #e8eee8;
  display: flex;
  align-items: center;
  justify-content: center;
}
.right-prod-item .right-prod-img img,
.right-sol-item .right-sol-img img,
.right-news-item .right-news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.right-prod-item .right-prod-img .placeholder-icon,
.right-sol-item .right-sol-img .placeholder-icon,
.right-news-item .right-news-img .placeholder-icon {
  font-size: 1.4rem;
  color: var(--dark-green);
  opacity: 0.25;
}
.right-prod-item .right-prod-info,
.right-sol-item .right-sol-info,
.right-news-item .right-news-info {
  flex: 1;
  min-width: 0;
}
.right-prod-item .right-prod-info .prod-name,
.right-sol-item .right-sol-info .sol-name,
.right-news-item .right-news-info .news-title {
  font-size: var(--font-sm);
  font-weight: 600;
  color: var(--dark-green);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.3;
}
.right-prod-item .right-prod-info .prod-tag,
.right-sol-item .right-sol-info .sol-tag {
  font-size: 0.7rem;
  color: #838482;
 
  padding: 1px 0px;
  border-radius: 20px;
  display: inline-block;
  margin-top: 8px;
}
.right-news-item .right-news-info .news-date {
  font-size: 0.7rem;
  color: #8aae99;
  display: block;
  margin-top: 2px;
}
.right-prod-item .right-prod-arrow,
.right-sol-item .right-sol-arrow,
.right-news-item .right-news-arrow {
  color: var(--primary-green);
  font-size: 0.7rem;
  opacity: 0.4;
  transition: 0.2s;
  flex-shrink: 0;
}
.right-prod-item:hover .right-prod-arrow,
.right-sol-item:hover .right-sol-arrow,
.right-news-item:hover .right-news-arrow {
  opacity: 1;
  transform: translateX(3px);
}

/* ----- 新闻详情特殊样式 ----- */
.detail-left .detail-header .detail-image {
  width: 100%;
  margin-bottom: 20px;
}
.detail-left .detail-header .detail-image img {
  
}
.detail-left .detail-header .detail-meta {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: var(--font-sm);
  color: #8aae99;
  margin-bottom: 10px;
  flex-wrap: wrap;
}
.detail-left .detail-header .detail-meta i {
  color: var(--primary-green);
  margin-right: 4px;
}
.detail-left .detail-header .detail-meta .news-category {
  background: var(--light-green);
  color: var(--primary-green);
  padding: 2px 14px;
  border-radius: 20px;
  font-size: 0.7rem;
  font-weight: 500;
}
.detail-left .detail-header h2 {
  font-size: var(--font-2xl);
  color: var(--dark-green);
  line-height: 1.3;
  margin-bottom: 6px;
}

/* ============================================================
   客户服务页（service.html）
   ============================================================ */
.service-content-section {
  padding: 60px 0;
  background: #f8fbf8;
}
.service-content-section .content-panel {
  display: none;
  animation: fadeInUp 0.5s ease;
}
.service-content-section .content-panel.active {
  display: block;
}

/* ----- 采购表单 ----- */
.purchase-form-wrapper {
  max-width: 960px;
  margin: 0 auto;
  background: white;
  border-radius: 20px;
  padding: 40px 48px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.04);
  border: 1px solid #eaf3e8;
}
.purchase-form-wrapper h3 {
    color: var(--dark-green);
    font-size: var(--font-2xl);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.purchase-form-wrapper h3 i {
  color: var(--primary-green);
}
.purchase-form-wrapper .form-title {
  font-size: var(--font-lg);
  font-weight: 600;
  color: var(--dark-green);
  margin: 24px 0 12px 0;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--light-green);
  display: flex;
  align-items: center;
  gap: 8px;
}
.purchase-form-wrapper .form-title:first-of-type {
  margin-top: 0;
}
.purchase-form-wrapper .form-title i {
  color: var(--primary-green);
}
.form-group {
  margin-bottom: 14px;
}
.form-group .form-control {
  width: 100%;
  padding: 10px 16px;
  border: 1px solid #dce6dc;
  border-radius: 10px;
  font-size: var(--font-sm);
  transition: 0.25s;
  background: #fafcfa;
  color: #1e3a2f;
  outline: none;
}
.form-group .form-control:focus {
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(62,177,52,0.12);
  background: white;
}
.form-group textarea.form-control {
  resize: vertical;
  min-height: 80px;
}
.form-group .radio-group {
  display: flex;
  align-items: center;
  gap: 20px;
  flex-wrap: wrap;
  padding: 6px 0;
}
.form-group .radio-group label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-sm);
  color: #1e3a2f;
  cursor: pointer;
}
.form-group .radio-group input[type="radio"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary-green);
  cursor: pointer;
}
.form-group .privacy-text {
  font-size: var(--font-sm);
  color: #2d4a37;
  line-height: 1.8;
  padding: 4px 0;
}
.form-group .privacy-text a {
  color: var(--primary-green);
  text-decoration: none;
  font-weight: 500;
}
.form-group .privacy-text a:hover {
  text-decoration: underline;
}
.form-group .btn-submit {
  padding: 12px 48px;
  background: var(--primary-green);
  color: white;
  border: none;
  border-radius: 40px;
  font-size: var(--font-md);
  font-weight: 600;
  cursor: pointer;
  transition: 0.25s;
  width: 100%;
}
.form-group .btn-submit:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(62,177,52,0.25);
}

/* ----- 文章内容（客户服务各栏目） ----- */
.article-content {
  max-width: 960px;
  margin: 0 auto;
  background: white;
  border-radius: 20px;
  padding: 40px 48px;
  box-shadow: 0 8px 30px rgba(0,0,0,0.04);
  border: 1px solid #eaf3e8;
}
.article-content h3 {
  color: var(--dark-green);
  font-size: var(--font-2xl);
 margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eaf3e8;
  display: flex;
  align-items: center;
  gap: 12px;
}
.article-content h3 i {
  color: var(--primary-green);
}
.article-content .article-meta {
  font-size: var(--font-sm);
  color: #8aae99;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid #eaf3e8;
}
.article-content p {
  font-size: var(--font-md);
  line-height: 1.9;
  color: #2d4a37;
  margin-bottom: 16px;
}
.article-content ul {
  margin: 12px 0 16px 24px;
  color: #2d4a37;
  font-size: var(--font-md);
}
.article-content ul li {
  margin: 6px 0;
  line-height: 1.8;
}
.article-content .article-highlight {
  background: var(--light-green);
  padding: 18px 24px;
  border-radius: 12px;
  border-left: 4px solid var(--primary-green);
  margin: 20px 0;
}
.article-content .article-highlight p {
  margin-bottom: 0;
  font-size: var(--font-sm);
}
.btn-service {
  display: inline-block;
  padding: 10px 32px;
  background: var(--primary-green);
  color: white;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-sm);
  transition: 0.25s;
  border: none;
  cursor: pointer;
}
.btn-service:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(62,177,52,0.25);
}

/* ----- 各地办事处 ----- */
.office-list {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 20px;
  margin-top: 20px;
}
.office-item {
  background: #fafff9;
  border-radius: 12px;
  padding: 18px 20px;
  border: 1px solid #eaf3e8;
  transition: 0.2s;
}
.office-item:hover {
  border-color: var(--primary-green);
  box-shadow: 0 4px 12px rgba(62,177,52,0.06);
}
.office-item h5 {
  color: var(--dark-green);
  font-size: var(--font-md);
  margin-bottom: 4px;
}
.office-item p {
  font-size: var(--font-sm);
  color: #696b69;
  margin-bottom: 2px;
  line-height: 1.6;
}
.office-item .office-phone {
  color: var(--primary-green);
  font-weight: 500;
}

/* ============================================================
   技术支持页（support.html）
   ============================================================ */
.support-content-section {
  padding: 60px 0;
  background: #f8fbf8;
}
.support-content-section .content-panel {
  display: none;
  animation: fadeInUp 0.5s ease;
}
.support-content-section .content-panel.active {
  display: block;
}
.jobContent h5{
  font-size: var(--font-lg);
    font-weight: 600;
    color: var(--dark-green);
    margin: 24px 0 12px 0;
    padding-bottom: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
}
/* ----- FAQ ----- */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.faq-item {
  background: white;
  border-radius: 12px;
  border: 1px solid #eaf3e8;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
  transition: 0.2s;
}
.faq-item:hover {
  border-color: var(--primary-green);
  box-shadow: 0 4px 16px rgba(62,177,52,0.06);
}
.faq-question {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 24px;
  cursor: pointer;
  user-select: none;
  background: white;
  transition: background 0.15s;
}
.faq-question:hover {
  background: #f6fbf6;
}
.faq-question .q-icon {
  color: var(--primary-green);
  font-weight: 700;
  font-size: var(--font-md);
  flex-shrink: 0;
}
.faq-question .q-text {
  flex: 1;
  font-size: var(--font-md);
  font-weight: 500;
  color: #1e3a2f;
}
.faq-question .q-toggle {
  color: var(--primary-green);
  font-size: 0.85rem;
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-question .q-toggle.open {
  transform: rotate(180deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s ease;
  padding: 0 24px;
  background: #fafff9;
  border-top: 1px solid transparent;
}
.faq-answer.open {
  max-height: none;      /* 关键：取消 300px 限制 */
  height: auto;
  padding: 16px 24px 22px;
  border-top-color: #eaf3e8;
  overflow: visible;     /* 内容超高时不裁剪 */
}
.faq-answer p {
  font-size: var(--font-sm);
  color: #2d4a37;
  line-height: 1.8;
  margin: 0;
}

/* ----- 在线咨询 ----- */
.consult-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin: 0 auto;
  max-width: 960px;
}
.consult-card {
  background: white;
  border-radius: 16px;
  padding: 32px 28px;
  border: 1px solid #eaf3e8;
  text-align: center;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.consult-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 30px rgba(62,177,52,0.08);
  border-color: var(--primary-green);
}
.consult-card .consult-icon {
  font-size: 3rem;
  color: var(--primary-green);
  margin-bottom: 16px;
}
.consult-card h4 {
  color: var(--dark-green);
  font-size: var(--font-xl);
  margin-bottom: 8px;
}
.consult-card p {
  font-size: var(--font-sm);
  color: #696b69;
  margin-bottom: 16px;
}
.consult-card .btn-consult {
  display: inline-block;
  padding: 10px 32px;
  background: var(--primary-green);
  color: white;
  border-radius: 40px;
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-sm);
  transition: 0.25s;
  border: none;
  cursor: pointer;
}
.consult-card .btn-consult:hover {
  background: var(--dark-green);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(62,177,52,0.25);
}

/* ----- 电子文档 ----- */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.doc-card {
  background: white;
  border-radius: 12px;
  padding: 24px 18px;
  text-align: center;
  border: 1px solid #eaf3e8;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
}
.doc-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(62,177,52,0.08);
  border-color: var(--primary-green);
}
.doc-card .doc-icon {
  font-size: 2.8rem;
  color: var(--primary-green);
  margin-bottom: 12px;
}
.doc-card h5 {
  color: var(--dark-green);
  font-size: var(--font-md);
  margin-bottom: 4px;
}
.doc-card p {
  font-size: var(--font-sm);
  color: #696b69;
  margin-bottom: 12px;
}
.doc-card .btn-download {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid var(--primary-green);
  color: var(--primary-green);
  border-radius: 30px;
  text-decoration: none;
  font-size: var(--font-sm);
  font-weight: 500;
  transition: 0.2s;
}
.doc-card .btn-download:hover {
  background: var(--primary-green);
  color: white;
}

/* ----- 行业报告 ----- */
.report-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 960px;
  margin: 0 auto;
}
.report-item {
  background: white;
  border-radius: 12px;
  padding: 18px 24px;
  border: 1px solid #eaf3e8;
  display: flex;
  align-items: center;
  gap: 20px;
  transition: 0.2s;
  box-shadow: 0 2px 6px rgba(0,0,0,0.01);
}
.report-item:hover {
  border-color: var(--primary-green);
  box-shadow: 0 4px 16px rgba(62,177,52,0.06);
  transform: translateX(4px);
}
.report-item .report-icon {
  font-size: 2rem;
  color: var(--primary-green);
  flex-shrink: 0;
}
.report-item .report-info {
  flex: 1;
}
.report-item .report-info h5 {
  font-size: var(--font-md);
  color: var(--dark-green);
  margin-bottom: 2px;
}
.report-item .report-info p {
  font-size: var(--font-sm);
  color: #696b69;
}
.report-item .report-date {
  font-size: var(--font-sm);
  color: #8aae99;
  white-space: nowrap;
}
.report-item .btn-report {
  padding: 6px 18px;
  border: 1px solid var(--primary-green);
  color: var(--primary-green);
  border-radius: 30px;
  text-decoration: none;
  font-size: var(--font-sm);
  font-weight: 500;
  transition: 0.2s;
  white-space: nowrap;
}
.report-item .btn-report:hover {
  background: var(--primary-green);
  color: white;
}

    /* ============================================================ */
    /* ===== 新闻列表页 - 适合SEO的图文列表布局 ===== */
    /* ============================================================ */
    .news-list-section {
      padding: 60px 0;
      background: white;
    }
    .news-list-section .section-title {
      text-align: center;
      margin-bottom: 40px;
    }
    .news-list-section .section-title h2 {
      font-size: var(--font-3xl);
      font-weight: 600;
      color: var(--dark-green);
      letter-spacing: 2px;
    }
    .news-list-section .section-title p {
      font-size: var(--font-lg);
      color: #3f604a;
      margin-top: 6px;
    }

    /* SEO友好的新闻列表 - 每条新闻占据一行，左图右文 */
    .news-list {
      display: flex;
      flex-direction: column;
      gap: 32px;
      max-width: 1100px;
      margin: 0 auto;
    }
    .news-item {
      display: flex;
      flex-wrap: wrap;
      gap: 28px;
      background: white;
      border-radius: 14px;
      overflow: hidden;
      border: 1px solid #eaf0e8;
      transition: 0.3s;
      box-shadow: 0 2px 12px rgba(0,0,0,0.03);
      text-decoration: none;
      color: inherit;
    }
    .news-item:hover {
      box-shadow: 0 12px 36px rgba(62,177,52,0.10);
      transform: translateY(-3px);
      border-color: var(--primary-green);
    }
    .news-item .news-img {
      flex: 0 0 280px;
      height: 200px;
      overflow: hidden;
      background: #dce8de;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .news-item .news-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
      transition: 0.4s;
    }
    .news-item:hover .news-img img {
      transform: scale(1.05);
    }
    .news-item .news-body {
      flex: 1;
      padding: 18px 24px 18px 24px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      min-width: 200px;
    }
    .news-item .news-body .news-meta {
      display: flex;
      align-items: center;
      gap: 16px;
      font-size: var(--font-sm);
      color: #8aae99;
      margin-bottom: 8px;
    }
    .news-item .news-body .news-meta i {
      margin-right: 4px;
      color: var(--primary-green);
    }
    .news-item .news-body .news-meta .news-category {
      background: var(--light-green);
      color: var(--primary-green);
      padding: 2px 14px;
      border-radius: 20px;
      font-size: 0.7rem;
      font-weight: 500;
    }
    .news-item .news-body h3 {
      font-size: var(--font-xl);
      font-weight: 600;
      color: var(--dark-green);
      line-height: 1.4;
      margin-bottom: 8px;
    }
    .news-item .news-body h3:hover {
      color: var(--primary-green);
    }
    .news-item .news-body p {
      font-size: var(--font-sm);
      color: #3f604a;
      line-height: 1.7;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      margin-bottom: 12px;
    }
    .news-item .news-body .news-readmore {
      color: var(--primary-green);
      font-weight: 600;
      font-size: var(--font-sm);
      display: inline-flex;
      align-items: center;
      gap: 6px;
      transition: 0.2s;
      align-self: flex-start;
    }
    .news-item .news-body .news-readmore i {
      transition: 0.2s;
    }
    .news-item:hover .news-body .news-readmore i {
      transform: translateX(4px);
    }

    /* ===== 分页 ===== */
    .news-pagination {
      display: flex;
      justify-content: center;
      gap: 8px;
      margin-top: 40px;
    }
    .news-pagination a {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      min-width: 40px;
      height: 40px;
      padding: 0 14px;
      border-radius: 8px;
      border: 1px solid #e0eee4;
      color: #3f604a;
      text-decoration: none;
      font-size: var(--font-sm);
      transition: 0.2s;
    }
    .news-pagination a:hover,
    .news-pagination a.active {
      background: var(--primary-green);
      color: white;
      border-color: var(--primary-green);
    }
    .news-pagination a.disabled {
      opacity: 0.4;
      pointer-events: none;
    }

/* ============================================================
   页脚（全站统一）
   ============================================================ */
.footer {
  background: #1a2f22;
  color: #c8dccf;
  padding: 50px 0 20px;
  margin-top: 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 30px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.footer-col h5 {
  color: #ffffff;
  font-size: var(--font-md);
  font-weight: 600;
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}
.footer-col h5::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-green);
  border-radius: 2px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin: 8px 0;
}
.footer-col ul li a {
  color: #b0cdbc;
  text-decoration: none;
  font-size: var(--font-sm);
  transition: 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.footer-col ul li a:hover,.footer-col p a:hover {
  color: var(--primary-green);
  transform: translateX(4px);
}
.footer-col ul li a i {
  font-size: 0.7rem;
  color: var(--primary-green);
  opacity: 0.6;
}
.footer-col p,.footer-col p a{
  color: #b0cdbc;
  font-size: var(--font-sm);
  line-height: 1.8;
  margin: 6px 0;text-decoration: none;
}
.footer-col p i {
  color: var(--primary-green);
  margin-right: 8px;
  width: 18px;
}
.footer-col .social-links {
  display: flex;
  gap: 12px;
  margin-top: 14px;
}
.footer-col .social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(255,255,255,0.06);
  color: #b0cdbc;
  font-size: 1rem;
  transition: 0.25s;
  text-decoration: none;
}
.footer-col .social-links a:hover {
  background: var(--primary-green);
  color: white;
  transform: translateY(-2px);
}
.footer-bottom {
  text-align: center;
  font-size: var(--font-sm);
  color: #8aae99;
  padding-top: 20px;
}
.footer-bottom a {
  color: #8aae99;
  text-decoration: none;
}
.footer-bottom a:hover {
  color: var(--primary-green);
}

/* ============================================================
   响应式（全站统一）
   ============================================================ */
@media (max-width: 1200px) {
  .grid-product,
  .grid-product-list,
  .grid-solution,
  .grid-solution-list {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-solution-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 992px) {
  .grid-product,
  .grid-product-list,
  .grid-solution,
  .grid-solution-list,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 30px 20px;
  }
  .qualification-grid,
  .patent-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .honor-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .doc-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .consult-grid {
    grid-template-columns: 1fr 1fr;
  }
  .office-list {
    grid-template-columns: 1fr 1fr;
  }
  .about-wrap {
    flex-direction: column;
    padding: 30px;
  }
  .about-text {
    flex: 1 1 100%;
  }
  .about-video {
    flex: 1 1 100%;
    width: 100%;
  }
  .cta-wrap {
    padding: 30px;
  }
  .company-intro {
    flex-direction: column;
  }
  .company-intro .intro-image {
    flex: 1 1 100%;
    width: 100%;
  }
  .company-intro .intro-image img {
    min-height: 200px;
  }
  .detail-two-col {
    flex-direction: column;
  }
  .detail-left {
    flex: 1 1 100%;
  }
  .detail-right {
    flex: 1 1 100%;
    position: static;
    padding: 24px 20px;
  }
  .detail-right .right-prod-list,
  .detail-right .right-sol-list,
  .detail-right .right-news-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .right-prod-item,
  .right-sol-item,
  .right-news-item {
    border-bottom: none;
    padding: 10px 12px;
    background: white;
    border-radius: 10px;
    border: 1px solid #eaf3e8;
  }
  .right-prod-item:hover,
  .right-sol-item:hover,
  .right-news-item:hover {
    margin-left: 0;
    padding-left: 12px;
    padding-right: 12px;
  }
  .page-banner {
    height: 400px;
    min-height: 400px;
    max-height: 400px;
  }
  .page-banner .banner-content h1 {
    font-size: var(--font-3xl);
  }
  .detail-left .detail-header .detail-image img {
    width: 100%;
  }
  .hero-carousel {
    height: 400px;
    min-height: 400px;
    max-height: 400px;
  }
  .carousel-slide h2 {
    font-size: var(--font-3xl);
  }
}

@media (max-width: 768px) {
  html { font-size: 15px; }

  /* 导航栏手机版 */
  .navbar .container { flex-wrap: wrap; position: relative; }
  .navbar-left { display: flex; align-items: center; gap: 10px; }
  .navbar-right-mobile { display: flex; align-items: center; gap: 2px; margin-left: auto; }
  .lang-switch-mobile {
    display: flex;
    padding: 2px 10px 2px 12px;
    font-size: 0.75rem;
    border-radius: 20px;
    background: rgba(255,255,255,0.1);
    border-color: rgba(255,255,255,0.15);
    margin-left: 0;
    position: relative;
  }
  .navbar.scrolled .lang-switch-mobile { background: var(--light-green); border-color: #b8d9c4; color: #1e3a2f; }
  .lang-switch-mobile .lang-dropdown { right: 0; left: auto; min-width: 80px; top: 130%; }
  .navbar > .container > .lang-switch { display: none; }
  .mobile-toggle { display: block; z-index: 5; margin-left: 0; font-size: 1.6rem; padding: 0 4px; }

  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    background: white;
    padding: 18px 12px;
    border-radius: 30px;
    margin-top: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.04);
    order: 10;
  }
  .nav-menu.open { display: flex; }
  .nav-menu > li > a {
    color: var(--dark-green) !important;
    background: transparent;
    width: 100%;
    border-bottom: none;
    font-size: var(--font-md);
    padding: 10px 16px;
    border-radius: 8px;
    transition: background 0.2s;
  }
  .nav-menu > li > a:hover { background: var(--light-green); color: var(--dark-green) !important; }
  .nav-menu > li > a .dropdown-arrow { margin-left: auto; transition: transform 0.25s; font-size: 0.6rem; }
  .nav-menu > li > a .dropdown-arrow.rotated { transform: rotate(180deg); }
  .nav-menu > li > a.active { color: var(--primary-green) !important; background: var(--light-green); }
  .dropdown-content {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    background: #f3f9f5;
    margin: 0 0 8px 10px;
    border-radius: 20px;
    padding: 6px 0;
    display: none;
    width: calc(100% - 10px);
    border: none;
  }
  .dropdown-content.open { display: block; }

  /* 手机端：隐藏产品中心的二级子菜单，保持原样 */
  .submenu-content {
    display: none !important;
  }
  .dropdown-content > li.has-submenu-item > a .submenu-arrow {
    display: none;
  }

  .dropdown-content li a { padding: 8px 20px; font-size: var(--font-sm); }
  .nav-menu > li:hover .dropdown-content { opacity: 1; visibility: visible; transform: none; }

  .search-wrapper {
    order: 11;
    flex: 0 0 100%;      /* 关键：flex 布局下强制占满整行 */
    width: 100%;
    max-width: 100%;
    margin: 10px 0 0;
    z-index: 5;
  }
  .search-wrapper form {
    width: 100%;
    display: block;
  }
  .search-wrapper input {
    width: 100%;
    color: #1e3a2f;
    background: rgba(255,255,255,0.08);
    border-color: #6ca280;
    padding: 8px 14px 8px 38px;
  }
  .search-wrapper input:focus { width: 100%; }
  .navbar.scrolled .search-wrapper input { background: white; }
  .search-wrapper i { color: #3f604a; }

  /* 轮播图 */
  .hero-carousel {
    height: 460px;
    min-height: 400px;
    max-height: 460px;
  }
  .carousel-slide h2 {
    font-size: var(--font-2xl);
    padding: 20px 28px;
    margin-top: 40px;
  }

  /* 统计数字 */
  .about-stats {
    gap: 8px 16px;
    justify-content: flex-start;
    flex-wrap: nowrap;
  }
  .about-stats .item {
    font-size: 0.7rem;
    white-space: nowrap;
  }
  .about-stats .num {
    font-size: 1.5rem;
  }

  /* 网格 */
  .grid-product,
  .grid-product-list,
  .grid-solution,
  .grid-solution-list,
  .news-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .qualification-grid,
  .patent-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .honor-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .doc-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  .consult-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .office-list {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
  .standard-list {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 16px;
  }
  .about-wrap { padding: 24px; }
  .cta-wrap { padding: 24px; }
  .cta-wrap h2 { font-size: var(--font-2xl); }
  .cta-wrap p { font-size: var(--font-md); }
  .about-video .slogan { font-size: var(--font-xl); }
  .news-img { height: 160px; }

  .page-banner { height: 400px; min-height: 400px; max-height: 400px; margin-top: 0; }
  .page-banner .banner-content h1 { font-size: var(--font-2xl); letter-spacing: 2px; }
  .page-banner .banner-content p { font-size: var(--font-sm); }

  .subnav-section { top: 68px; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
  .subnav-section .container { justify-content: flex-start; padding: 0 16px; flex-wrap: nowrap; gap: 0; }
  .subnav-item { padding: 12px 16px; font-size: var(--font-sm); flex-shrink: 0; }
  .subnav-item i { margin-right: 4px; font-size: 0.8rem; }

  .about-content-section,
  .service-content-section,
  .support-content-section,
  .solution-list-section,
  .product-list-section,
  .news-list-section {
    padding: 40px 0;
  }

  .company-intro .intro-text h3 { font-size: var(--font-xl); }
  .company-intro .intro-text p { font-size: var(--font-sm); }
  .company-intro .intro-image img { min-height: 160px; }

  .purchase-form-wrapper { padding: 28px 20px; }
  .article-content { padding: 28px 20px; }

  .detail-main { padding: 30px 0 40px; }
  .detail-left .detail-header { flex-direction: column; gap: 16px; }
  .detail-left .detail-header .detail-image { flex: 1 1 100%; }
  .detail-left .detail-header .detail-image img { height: 180px; }
  .detail-left .detail-header .detail-info { flex: 1 1 100%; }
  .detail-right .right-prod-list,
  .detail-right .right-sol-list,
  .detail-right .right-news-list {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }
  .right-prod-item,
  .right-sol-item,
  .right-news-item {
    padding: 10px 12px;
  }
  .right-prod-item .right-prod-img,
  .right-sol-item .right-sol-img,
  .right-news-item .right-news-img {
    width: 50px;
    height: 50px;
  }

  /* 新闻列表特殊 */
  .news-list .news-item {
    flex-direction: column;
    gap: 0;
    border-radius: 12px;
  }
  .news-list .news-item .news-img {
    flex: 0 0 auto;
    width: 100%;
    height: 200px;
  }
  .news-list .news-item .news-body {
    padding: 18px 20px 22px;
  }
  .news-list .news-item .news-body h3 {
    font-size: var(--font-lg);
  }
  .news-pagination { gap: 6px; }
  .news-pagination a { min-width: 34px; height: 34px; font-size: 0.8rem; padding: 0 10px; }

  .report-item {
    flex-wrap: wrap;
    gap: 12px;
  }
  .report-item .report-date {
    white-space: normal;
  }

  .block-bg-about,
  .block-bg-cta {
    background-attachment: scroll;
  }
  .block-bg-about { padding: 60px 0; }
}

@media (max-width: 480px) {
  html { font-size: 14px; }

  .page-banner { height: 300px; min-height: 300px; max-height: 300px; margin-top: 0; }
  .page-banner .banner-content h1 { font-size: var(--font-xl); }
  .page-banner .banner-content p { font-size: 0.75rem; }

  .hero-carousel {
    height: 300px;
    min-height: 260px;
    max-height: 300px;
  }
  .carousel-slide h2 {
    font-size: var(--font-xl);
    padding: 14px 20px;
    letter-spacing: 3px;
    margin-top: 30px;
  }

  .about-stats { gap: 6px 12px; }
  .about-stats .item { font-size: 0.65rem; }
  .about-stats .num { font-size: 1.3rem; }

  .grid-product,
  .grid-product-list,
  .grid-solution,
  .grid-solution-list,
  .news-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .qualification-grid,
  .patent-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .honor-grid {
    grid-template-columns: 1fr;
    gap: 14px;
  }
  .doc-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .consult-grid {
    grid-template-columns: 1fr;
  }
  .office-list {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 16px 12px; }
  .logo { font-size: 1.2rem; }
  .logo img { height: 32px; }
  .lang-switch-mobile { font-size: 0.65rem; padding: 1px 8px 1px 10px; }
  .mobile-toggle { font-size: 1.4rem; padding: 0 2px; }

  .subnav-section { top: 60px; }
  .subnav-item { padding: 10px 12px; font-size: 0.75rem; }

  .purchase-form-wrapper { padding: 20px 16px; }
  .article-content { padding: 20px 16px; }

  .detail-left .detail-header .detail-image img { height: 140px; }
  .detail-right .right-prod-list,
  .detail-right .right-sol-list,
  .detail-right .right-news-list {
    grid-template-columns: 1fr;
  }

  .news-list .news-item .news-img { height: 160px; }
  .news-list .news-item .news-body h3 { font-size: var(--font-md); }

  .about-wrap { padding: 16px; }
  .cta-wrap { padding: 16px; }
  .about-video .slogan { font-size: var(--font-lg); }
  .news-img { height: 140px; }
  .news-body h4 { font-size: var(--font-sm); }

  .prod-card .prod-img { height: 250px; }
}

@media (max-width: 380px) {
  .honor-grid {
    grid-template-columns: 1fr;
  }
  .qualification-grid {
    grid-template-columns: 1fr;
  }
  .patent-grid {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1600px) {
  .carousel-slide {
    background-size: cover;
  }
}

 /* ===== 返回顶部按钮 ===== */
  .back-to-top {
    position: fixed;
    right: 28px;
    bottom: 40px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary-green, #3EB134);
    color: #fff;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    box-shadow: 0 8px 24px rgba(62, 177, 52, 0.35);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s, background 0.25s;
    z-index: 999;
  }
  .back-to-top:hover {
    background: var(--dark-green, #1f5a1a);
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 12px 28px rgba(62, 177, 52, 0.45);
  }
  .back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  @media (max-width: 768px) {
    .back-to-top {
      right: 16px;
      bottom: 24px;
      width: 42px;
      height: 42px;
      font-size: 1rem;
    }
  }