/* ============================================================
   康澈净水官网 v1.3 主样式表
   纯净、专业、工业感
   主色：#c00000（特定标题红） 辅色：#0d47a1（导航蓝）
   ============================================================ */

/* === CSS 变量 === */
:root {
  --red: #c00000;
  --red-dark: #a00000;
  --blue: #0d47a1;
  --blue-light: #1565c0;
  --navy: #0d2137;
  --bg-light: #f8f9fa;
  --bg-blue-light: #eef5fc;
  --border: #e0e0e0;
  --text: #333;
  --text-light: #666;
  --text-lighter: #999;
}

/* === Reset === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text);
  background: #f5f5f5;
}

a {
  color: var(--blue);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--red);
}

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

ul {
  list-style: none;
}

/* === 布局 === */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.text-center {
  text-align: center;
}

.mt-30 {
  margin-top: 30px;
}

.mt-20 {
  margin-top: 20px;
}

/* === 板块 === */
.section {
  padding: 50px 0;
}

.bg-white {
  background: #fff;
}

.bg-blue-light {
  background: var(--bg-blue-light);
}

.section-title {
  text-align: center;
  margin-bottom: 35px;
}

.section-title h2 {
  font-size: 28px;
  color: var(--navy);
  font-weight: 700;
  margin-bottom: 8px;
}

.section-title p {
  font-size: 15px;
  color: var(--text-light);
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.7;
}

.section-title .divider {
  display: none;
}

/* === 按钮 === */
.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 6px;
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

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

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

.btn-outline {
  background: #fff;
  color: var(--red);
  border: 2px solid var(--red);
}

.btn-outline:hover {
  background: var(--red);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--blue);
  border: 2px solid #ddd;
}

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

.btn-lg {
  padding: 14px 32px;
  font-size: 16px;
}

/* === 面包屑 === */
.breadcrumb {
  font-size: 14px;
  color: var(--text-lighter);
  padding: 12px 0;
}

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

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

.breadcrumb span {
  color: var(--text-lighter);
  margin: 0 4px;
}

/* ====== M1 顶部状态栏 ====== */
.top-bar {
  background: #f5f5f5;
  border-bottom: 1px solid #e8e8e8;
  padding: 6px 0;
  font-size: 13px;
  color: var(--text-light);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.top-welcome,
.top-left span {
  color: var(--text-light);
}

.top-hotline strong,
.top-right strong {
  color: var(--red);
  font-size: 14px;
}

.top-hotwords a {
  color: var(--text-light);
  margin-left: 8px;
}

.top-hotwords a:hover {
  color: var(--red);
}

.top-right a {
  color: var(--text-light);
  margin-left: 12px;
}

/* === 热门关键词栏 === */
.hot-keywords-bar {
  background: #fff;
  border-bottom: 1px solid #eee;
  padding: 6px 0;
  font-size: 13px;
}

.hot-keywords-bar .container {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.hot-keywords-bar span {
  color: var(--text-lighter);
}

.hot-keywords-bar a {
  color: var(--text-light);
  padding: 2px 8px;
  border-radius: 3px;
}

.hot-keywords-bar a:hover {
  background: #fff3e0;
  color: var(--red);
}

/* ====== 顶部品牌栏 ====== */
.site-header {
  background: #fff;
  padding: 14px 0;
  border-bottom: 2px solid #e0e0e0;
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  max-width: 1200px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.logo-brand img {
  height: 56px;
  width: auto;
}

.logo-brand-text {
  line-height: 1.4;
}

.logo-company {
  font-size: 20px;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: 1px;
}

.logo-slogan {
  font-size: 12px;
  color: var(--text-light);
}

.logo-slogan span {
  display: block;
}

.header-contact {
  display: flex;
  align-items: center;
}

.header-tel {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-tel-icon {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
  flex-shrink: 0;
  border: none;
}

.header-tel-text {
  line-height: 1.3;
}

.header-tel-text span {
  font-size: 12px;
  color: var(--text-light);
  display: block;
}

.header-tel-text strong {
  font-size: 22px;
  color: var(--red);
}

/* ====== M2 主导航 ====== */
.main-nav {
  background: #fff;
  border-bottom: 3px solid var(--red);
  position: relative;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.main-nav-blue {
  background: #fff;
}

.main-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  padding-left: 10px;
  padding-right: 10px;
}

.main-nav .logo {
  display: none;
}

.main-nav .logo .logo-text {
  font-size: 22px;
  font-weight: 700;
  color: #fff;
  letter-spacing: 2px;
}

.main-nav .logo .logo-text span {
  color: #4fc3f7;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: #333;
  font-size: 24px;
  cursor: pointer;
  padding: 8px;
}

.nav-links {
  display: flex;
  list-style: none;
  flex-wrap: nowrap;
  width: 100%;
  justify-content: space-between;
}

.nav-links>li {
  position: relative;
  flex: 1;
  text-align: center;
}

.nav-links>li>a {
  display: block;
  padding: 14px 4px;
  color: #222;
  font-size: 16px;
  font-weight: 600;
  font-family: "SimHei", "黑体", "Microsoft YaHei", sans-serif;
  text-decoration: none;
  transition: color 0.2s, background 0.2s;
  white-space: nowrap;
}

.nav-links>li>a:hover,
.nav-links>li.active>a {
  color: var(--red);
  background: rgba(192, 0, 0, 0.06);
}

/* 下拉菜单 */
.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 180px;
  background: #fff;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  border-radius: 0 0 6px 6px;
  z-index: 200;
}

.nav-links>li:hover .dropdown {
  display: block;
}

.dropdown li a {
  display: block;
  padding: 10px 18px;
  color: var(--text);
  font-size: 14px;
  border-bottom: 1px solid #f0f0f0;
  transition: all 0.2s;
}

.dropdown li a:hover {
  background: var(--bg-blue-light);
  color: var(--blue);
  padding-left: 22px;
}

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

.nav-cta {
  display: flex;
  align-items: center;
}

.nav-tel {
  color: #fff;
  font-size: 18px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-tel-icon {
  font-size: 20px;
}

/* ====== Banner / Hero ====== */
.hero {
  background: #fff;
  padding: 0;
  overflow: hidden;
}

.hero .container {
  padding: 0;
  max-width: 1200px;
}

.hero-slides {
  position: relative;
  overflow: hidden;
}

.hero-slide {
  display: none;
  flex-direction: column;
  align-items: stretch;
}

.hero-slide.active {
  display: flex;
}

/* 文字区域（上方） */
.hero-content {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 30px 20px 16px;
}

.hero-content h1 {
  font-size: 36px;
  color: var(--navy);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 10px;
}

.hero-content h1 .highlight {
  color: var(--red);
}

.hero-content .slide-sub {
  font-size: 16px;
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 14px;
}

.hero-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* 图片占位区域（下方） */
.hero-image-area {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px 20px;
}

.hero-image-placeholder {
  width: 100%;
  height: 320px;
  background: linear-gradient(135deg, #f0f4f8, #e8edf2);
  border: 2px dashed #c0c8d0;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  font-size: 16px;
  text-align: center;
}

.hero-image-placeholder .placeholder-text {
  line-height: 2;
}

.hero-image-placeholder .placeholder-icon {
  font-size: 48px;
  display: block;
  margin-bottom: 8px;
}

.hero-stats {
  display: flex;
  gap: 30px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.hero-stat .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--red);
}

.hero-stat .label {
  font-size: 13px;
  color: var(--text-light);
}

/* 页面Banner（非首页） */
.page-banner {
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  padding: 40px 0;
  text-align: center;
}

.page-banner h1 {
  font-size: 30px;
  color: #fff;
  margin-bottom: 10px;
}

.page-banner p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.85);
  max-width: 800px;
  margin: 0 auto;
}

/* ====== 数据背书条 ====== */
.trust-bar {
  background: #f5f5f5;
  border-top: 1px solid #e8e8e8;
  border-bottom: 1px solid #e8e8e8;
  padding: 16px 0;
}

.trust-bar .container {
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  gap: 12px;
}

.trust-item {
  color: #333;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  position: relative;
}

.trust-item:not(:last-child)::after {
  content: '';
  position: absolute;
  right: -20px;
  top: 50%;
  transform: translateY(-50%);
  width: 1px;
  height: 20px;
  background: #ccc;
}

/* ====== 产品中心网格 ====== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s, box-shadow 0.2s;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.product-card .card-img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  background: #f0f0f0;
}

.product-card .card-icon {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
  background: linear-gradient(135deg, #e3f2fd, #f5f5f5);
}

.product-card h3 {
  font-size: 16px;
  color: var(--navy);
  padding: 12px 14px 4px;
  font-weight: 700;
}

.product-card .card-desc {
  font-size: 13px;
  color: var(--text-light);
  padding: 0 14px 10px;
  line-height: 1.6;
  flex: 1;
}

.product-card .card-tags {
  padding: 0 14px 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.card-tags .tag {
  font-size: 11px;
  color: var(--blue);
  background: #e3f2fd;
  padding: 2px 8px;
  border-radius: 10px;
}

/* ====== 设备细节卡 ====== */
.detail-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.detail-card {
  background: #fff;
  border-radius: 8px;
  padding: 24px 20px;
  text-align: center;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.detail-icon {
  font-size: 40px;
  margin-bottom: 12px;
}

.detail-card h3 {
  font-size: 16px;
  color: var(--navy);
  margin-bottom: 8px;
}

.detail-card p {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

/* ====== 案例网格 ====== */
.case-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.case-card {
  background: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.case-card .case-img {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: #f0f0f0;
}

.case-card .case-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-info {
  padding: 16px;
}

.case-info h4 {
  font-size: 15px;
  color: var(--navy);
  margin-bottom: 8px;
}

.case-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.case-meta span {
  font-size: 12px;
  color: var(--text-light);
  background: #f5f5f5;
  padding: 2px 8px;
  border-radius: 3px;
}

/* 案例banner */
.case-banner {
  width: 100%;
  max-height: 400px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
}

.case-main-image {
  width: 100%;
  border-radius: 8px;
  margin: 15px 0;
}

/* ====== 合作客户 ====== */
.client-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 14px;
}

.client-item {
  background: #fff;
  border-radius: 8px;
  padding: 16px 12px;
  text-align: center;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s;
}

.client-item:hover {
  transform: translateY(-2px);
}

.client-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--navy);
}

.client-desc {
  font-size: 12px;
  color: var(--text-lighter);
  margin-top: 4px;
}

/* 客户LOGO占位 */
.client-logo-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
}

.client-logo-box {
  background: #fafafa;
  border: 2px dashed #d0d0d0;
  border-radius: 8px;
  /* height: 100px; */
  display: flex;
  align-items: center;
  justify-content: center;
  color: #bbb;
  font-size: 13px;
  text-align: center;
  transition: border-color 0.2s;
}

.client-logo-box:hover {
  border-color: var(--red);
}

.client-logo-box .logo-placeholder-icon {
  font-size: 32px;
  display: block;
  margin-bottom: 4px;
}

.client-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  align-items: center;
}

.client-logo-item {
  background: #fff;
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-light);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

/* ====== 资质荣誉 ====== */
.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cert-card {
  background: #fff;
  border-radius: 8px;
  padding: 20px 16px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.cert-icon {
  font-size: 36px;
  margin-bottom: 8px;
}

.cert-card h4 {
  font-size: 15px;
  color: var(--navy);
  margin-bottom: 4px;
}

.cert-card p {
  font-size: 12px;
  color: var(--text-light);
}

.cert-inline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
}

.cert-tag {
  background: #e3f2fd;
  color: var(--blue);
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 13px;
  font-weight: 600;
}

/* ====== 资讯双栏 ====== */
.news-dual {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.news-col {
  background: #fff;
  border-radius: 8px;
  padding: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.news-col h3 {
  font-size: 18px;
  color: var(--navy);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

.news-col ul {
  list-style: none;
}

.news-col ul li {
  padding: 8px 0;
  border-bottom: 1px dashed #eee;
}

.news-col ul li:last-child {
  border-bottom: none;
}

.news-col ul li a {
  color: var(--text);
  font-size: 14px;
  display: block;
  transition: color 0.2s;
}

.news-col ul li a:hover {
  color: var(--red);
}

/* ====== 关于康澈简介块 ====== */
.about-brief {
  background: #fff;
  padding: 50px 0;
}

.about-brief-content {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 40px;
  align-items: center;
}

.about-brief-text h2 {
  font-size: 26px;
  color: var(--navy);
  margin-bottom: 16px;
}

.about-brief-text p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 12px;
}

.about-brief-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 20px;
}

.about-brief-stat {
  text-align: center;
}

.about-brief-stat .num {
  font-size: 26px;
  font-weight: 700;
  color: var(--red);
}

.about-brief-stat .label {
  font-size: 13px;
  color: var(--text-light);
}

.about-brief-img img {
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

/* ====== CTA 转化块 ====== */
/* ====== CTA表单区域（白底） ====== */
.cta-form-section {
  background: #fff;
  padding: 40px 0;
  border-top: 1px solid #e8e8e8;
}

.cta-form-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 20px;
}

.cta-form-wrapper h2 {
  background: #c00000;
  color: #fff;
  text-align: center;
  padding: 14px 20px;
  font-size: 22px;
  border-radius: 6px 6px 0 0;
  margin: 0;
  border-left: none;
}

.cta-form-subtitle {
  text-align: center;
  font-size: 14px;
  color: #777;
  margin: 16px 0 20px;
}

.cta-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.cta-form .form-row {
  display: flex;
  gap: 16px;
}

.cta-form .form-group {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.cta-form .form-group label {
  font-size: 14px;
  color: #333;
  margin-bottom: 6px;
  font-weight: 500;
}

.cta-form .form-group label .required {
  color: #c00000;
}

.cta-form .form-group input,
.cta-form .form-group textarea,
.cta-form .form-group select {
  padding: 10px 14px;
  border: 1px solid #d0d0d0;
  border-radius: 6px;
  font-size: 14px;
  color: #333;
  font-family: inherit;
  transition: border-color 0.2s;
}

.cta-form .form-group input:focus,
.cta-form .form-group textarea:focus,
.cta-form .form-group select:focus {
  outline: none;
  border-color: #c00000;
  box-shadow: 0 0 0 3px rgba(192, 0, 0, 0.08);
}

.cta-form .form-group textarea {
  resize: vertical;
  min-height: 80px;
}

.cta-form button {
  background: #c00000;
  color: #fff;
  border: none;
  padding: 14px 30px;
  font-size: 16px;
  font-weight: bold;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.2s;
  margin-top: 4px;
}

.cta-form button:hover {
  background: #a00000;
}

.cta-form-promise {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 24px;
  font-size: 13px;
  color: #888;
}

.cta-form-promise span {
  white-space: nowrap;
}

/* 响应式：移动端表单列堆叠 */
@media (max-width: 768px) {
  .cta-form .form-row {
    flex-direction: column;
    gap: 12px;
  }

  .cta-form-wrapper h2 {
    font-size: 18px;
    padding: 12px 16px;
  }
}

/* ====== 页脚 ====== */
.site-footer {
  background: #2a2a2a;
  color: rgba(255, 255, 255, 0.7);
  padding: 40px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 30px;
  padding-bottom: 30px;
}

.footer-about p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.8;
  margin-bottom: 10px;
}

.footer-grid h4 {
  color: #fff;
  font-size: 15px;
  margin-bottom: 12px;
}

.footer-grid ul {
  list-style: none;
}

.footer-grid ul li {
  margin-bottom: 0;
}

.footer-grid ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 13px;
  transition: color 0.2s;
}

.footer-grid ul li a:hover {
  color: #4fc3f7;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 16px 0;
  text-align: center;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.4);
}

.footer-bottom p {
  margin-bottom: 4px;
}

/* 底部联系方式 - 微信二维码 */
.footer-qr {
  margin-top: 14px;
  display: inline-block;
}
.footer-qr img {
  width: 110px;
  height: 110px;
  border-radius: 6px;
  background: #fff;
  padding: 5px;
  display: block;
}
.footer-qr p {
  margin-top: 6px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
}
@media (max-width: 768px) {
  .footer-qr img {
    width: 120px;
    height: 120px;
  }
}

/* ====== 转化浮窗 ====== */
.float-widget {
  position: fixed;
  right: 20px;
  bottom: 100px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.float-btn {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  text-decoration: none;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.2);
  transition: transform 0.2s;
}

.float-btn:hover {
  transform: scale(1.1);
  color: #fff;
}

.float-tel {
  background: var(--red);
}

.float-wechat {
  background: #07c160;
}

.float-top {
  background: var(--blue);
  cursor: pointer;
}

/* ====== 产品页专用（被产品页style引用的公共部分） ====== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
  margin-top: 15px;
}

.why-item {
  background: #fff;
  padding: 15px;
  border-radius: 6px;
  border-left: 3px solid var(--red);
}

.why-item h4 {
  font-size: 15px;
  color: var(--text);
  margin-bottom: 6px;
}

.why-item p {
  font-size: 13px;
  color: var(--text-light);
  margin: 0;
}

.related-products {
  margin-top: 30px;
  padding: 20px;
  background: var(--bg-light);
  border-radius: 8px;
}

.related-products h2 {
  margin-top: 0;
}

.related-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 15px;
}

.related-links a {
  display: inline-block;
  padding: 8px 18px;
  background: #fff;
  color: var(--red);
  text-decoration: none;
  border: 1px solid var(--red);
  border-radius: 20px;
  font-size: 14px;
  transition: all 0.2s;
}

.related-links a:hover {
  background: var(--red);
  color: #fff;
}

.custom-service {
  margin-top: 30px;
  padding: 25px 30px;
  background: #fff;
  border-radius: 8px;
  border-top: 4px solid var(--red);
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  color: var(--text);
}

.custom-service h2 {
  color: var(--navy);
  border-left: none;
  padding-left: 0;
  margin-top: 0;
}

.custom-service p {
  color: var(--text-light);
  margin-bottom: 10px;
}

.custom-service .service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
  margin: 20px 0;
}

.custom-service .service-item {
  background: var(--bg-light);
  padding: 15px;
  border-radius: 6px;
  text-align: center;
}

.custom-service .service-item .num {
  font-size: 28px;
  font-weight: 700;
  color: var(--red);
}

.custom-service .service-item .label {
  font-size: 14px;
  margin-top: 5px;
}

.custom-service .contact-box {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin-top: 15px;
}

/* ====== 解决方案页 ====== */
.solution-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 30px;
}

.solution-card {
  background: #fff;
  border-radius: 8px;
  padding: 24px 20px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border-top: 4px solid var(--blue);
  transition: transform 0.2s, box-shadow 0.2s;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.solution-card .sol-industry {
  font-size: 18px;
  font-weight: 700;
  color: var(--navy);
}

.solution-card .sol-section {
  font-size: 13px;
  color: var(--text-lighter);
}

.solution-card .sol-label {
  font-weight: 700;
  color: var(--red);
  font-size: 14px;
}

.solution-card .sol-text {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

.solution-card .sol-links {
  font-size: 13px;
  margin-top: auto;
}

.solution-card .sol-links a {
  display: inline-block;
  margin-right: 10px;
  margin-bottom: 4px;
  color: var(--blue);
  text-decoration: underline;
}

.solution-card .sol-links a:hover {
  color: var(--red);
}

.solution-banner,
.solution-main-image {
  width: 100%;
  border-radius: 8px;
  margin: 15px 0;
}

.sol-table-wrap {
  overflow-x: auto;
  margin: 15px 0;
}

.sol-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.sol-table th {
  background: #f0f0f0;
  padding: 10px 12px;
  border: 1px solid #ddd;
  text-align: left;
  font-weight: 700;
}

.sol-table td {
  padding: 10px 12px;
  border: 1px solid #ddd;
}

.sol-table tr:nth-child(even) td {
  background: #fafafa;
}

.sol-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.sol-card {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.sol-card h4 {
  font-size: 16px;
  color: var(--navy);
  margin-bottom: 8px;
}

.sol-card p {
  font-size: 13px;
  color: var(--text-light);
}

/* 流程步骤 */
.flow-steps,
.steps-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 24px;
}

.step-card {
  background: #fff;
  border-radius: 8px;
  padding: 20px;
  min-width: 200px;
  max-width: 250px;
  text-align: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  position: relative;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
}

.step-card h4 {
  font-size: 15px;
  color: var(--navy);
  margin-bottom: 6px;
}

.step-text {
  font-size: 13px;
  color: var(--text-light);
}

.process-arrow {
  font-size: 24px;
  color: var(--text-lighter);
  align-self: center;
}

/* 工艺流程 */
.principle-flow,
.process-flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 20px 0;
  padding: 20px;
  background: #fff;
  border-radius: 8px;
}

.principle-step,
.process-step {
  background: var(--bg-blue-light);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 14px;
  color: var(--blue);
  font-weight: 600;
}

.principle-arrow {
  color: var(--text-lighter);
  font-size: 18px;
}

/* 信号/优势网格 */
.signal-grid,
.sub-card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.signal-card,
.sub-card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.signal-card h4,
.sub-card h4 {
  font-size: 15px;
  color: var(--navy);
  margin-bottom: 8px;
}

.signal-card p,
.sub-card p {
  font-size: 13px;
  color: var(--text-light);
}

/* 痛点卡 */
.poison-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin: 20px 0;
}

.poison-card {
  background: #fff;
  padding: 20px;
  border-radius: 8px;
  border-left: 4px solid #ff9800;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.poison-card h4 {
  font-size: 15px;
  color: #e65100;
  margin-bottom: 8px;
}

.poison-card p {
  font-size: 13px;
  color: var(--text-light);
}

/* 对比表 */
.compare-table {
  width: 100%;
  border-collapse: collapse;
  margin: 15px 0;
  font-size: 14px;
}

.compare-table th {
  background: var(--blue);
  color: #fff;
  padding: 10px 12px;
  border: 1px solid #ddd;
}

.compare-table td {
  padding: 10px 12px;
  border: 1px solid #ddd;
}

.compare-table tr:nth-child(even) td {
  background: #fafafa;
}

/* 信任徽章 */
.trust-badges,
.trust-badge-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  justify-content: center;
  margin: 20px 0;
}

.trust-badges .badge,
.trust-badge-bar .badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 13px;
  color: var(--text);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

/* 关于页 */
.about-block {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  margin-bottom: 24px;
  border-left: 4px solid var(--blue);
}

.about-block h2 {
  font-size: 20px;
  color: var(--navy);
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--border);
}

.about-block p {
  font-size: 15px;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 10px;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}

.about-highlight {
  text-align: center;
  padding: 16px 12px;
  background: #e3f2fd;
  border-radius: 8px;
}

.about-highlight .hl-num {
  font-size: 24px;
  font-weight: 800;
  color: var(--red);
}

.about-highlight .hl-label {
  font-size: 13px;
  color: var(--text-light);
  margin-top: 4px;
}

/* 服务承诺 */
.promise-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 12px;
}

.promise-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-light);
  padding: 10px 14px;
  background: var(--bg-light);
  border-radius: 6px;
}

.promise-card {
  background: #e3f2fd;
  border-radius: 8px;
  padding: 24px;
  margin-top: 20px;
}

.promise-card h3 {
  color: var(--navy);
  margin-bottom: 10px;
}

.promise-card p {
  color: var(--text-light);
  font-size: 14px;
}

/* 联系页 */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.contact-info-card {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  margin-bottom: 20px;
}

.contact-info-card h2 {
  font-size: 20px;
  color: var(--navy);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--border);
}

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

.contact-info-item .ci-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  flex-shrink: 0;
}

.ci-icon-phone {
  background: linear-gradient(135deg, var(--red), #e53935);
}

.ci-icon-wechat {
  background: #07c160;
}

.ci-icon-email {
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
}

.ci-icon-web {
  background: linear-gradient(135deg, #6a1b9a, #8e24aa);
}

.ci-icon-addr {
  background: linear-gradient(135deg, #ef6c00, #fb8c00);
}

.ci-icon-mobile {
  background: linear-gradient(135deg, #00897b, #26a69a);
}

.contact-info-item .ci-text strong {
  display: block;
  font-size: 15px;
  color: var(--navy);
  margin-bottom: 2px;
}

.contact-info-item .ci-text span {
  font-size: 14px;
  color: var(--text-light);
}

/* 联系表单 */
.contact-form-box {
  background: #fff;
  border-radius: 8px;
  padding: 30px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.contact-form-box h2 {
  font-size: 20px;
  color: var(--navy);
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 14px;
  color: var(--navy);
  margin-bottom: 6px;
  font-weight: 600;
}

.form-group label .required {
  color: var(--red);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid #ddd;
  border-radius: 6px;
  font-size: 14px;
  font-family: inherit;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--blue);
  outline: none;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.closing-tip {
  text-align: center;
  margin-top: 20px;
  padding: 15px;
  background: #e3f2fd;
  border-radius: 6px;
  font-size: 14px;
  color: var(--blue);
}

/* 案例全宽卡 */
.case-card-full {
  background: #fff;
  border-radius: 8px;
  padding: 28px 24px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
  border-left: 4px solid var(--red);
  margin-bottom: 20px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.case-card-full:hover {
  transform: translateX(4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.case-card-full .case-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
}

.case-card-full .case-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue), var(--blue-light));
  color: #fff;
  font-weight: 700;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.case-card-full .case-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--navy);
}

.case-card-full .case-detail {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 12px;
}

.case-card-full .case-detail-item {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.6;
}

.case-card-full .case-detail-item strong {
  color: var(--red);
  display: block;
  font-size: 12px;
  margin-bottom: 2px;
}

.case-card-full .case-links {
  font-size: 13px;
  padding-top: 8px;
  border-top: 1px dashed var(--border);
}

.case-card-full .case-links a {
  color: var(--blue);
  text-decoration: underline;
  margin-right: 12px;
}

.case-card-full .case-desc {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
  margin-top: 10px;
}

/* 内容区域（通用文章/产品页） */
.content-area {
  background: #fff;
  border-radius: 8px;
  padding: 30px 40px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.content-area h1 {
  font-size: 24px;
  color: var(--text);
  border-bottom: 3px solid var(--red);
  padding-bottom: 12px;
  margin-bottom: 20px;
}

.content-area h2 {
  font-size: 20px;
  color: var(--red);
  border-left: 4px solid var(--red);
  padding-left: 12px;
  margin: 30px 0 15px;
}

.content-area h3 {
  font-size: 16px;
  color: #444;
  margin: 20px 0 10px;
}

.content-area p {
  margin-bottom: 14px;
  line-height: 1.8;
}

.content-area strong {
  color: #1a1a1a;
  font-weight: 700;
}

.content-area table {
  width: 100%;
  border-collapse: collapse;
  margin: 15px 0;
  font-size: 14px;
}

.content-area th {
  background: #f0f0f0;
  padding: 10px 12px;
  border: 1px solid #ddd;
  text-align: left;
  font-weight: 700;
  color: var(--text);
}

.content-area td {
  padding: 10px 12px;
  border: 1px solid #ddd;
  color: var(--text);
}

.content-area tr:nth-child(even) td {
  background: #fafafa;
}

.content-area ul {
  padding-left: 0;
  margin: 0;
}

.content-area ul li {
  margin-bottom: 0;
}

/* 产品页图片 */
.product-image-area {
  margin: 20px 0;
  text-align: center;
}

.product-image-placeholder {
  width: 100%;
  max-width: 600px;
  height: 360px;
  margin: 0 auto;
  background: #f0f0f0;
  border: 2px dashed #ccc;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-lighter);
}

.product-main-image {
  max-width: 100%;
  border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.process-flow-img {
  max-width: 100%;
  border: 1px solid #ddd;
  border-radius: 6px;
  margin: 15px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* 产品页hero参数 */
.product-hero-subtitle {
  font-size: 16px;
  color: #555;
  margin: -10px 0 20px;
}

.product-hero-params {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin: 20px 0;
  padding: 15px 20px;
  background: var(--bg-light);
  border-radius: 6px;
}

.product-param {
  text-align: center;
  flex: 1;
  min-width: 140px;
}

.product-param .param-label {
  font-size: 13px;
  color: var(--text-lighter);
}

.product-param .param-value {
  font-size: 18px;
  font-weight: 700;
  color: var(--red);
}

.product-hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  margin: 20px 0 25px;
}

/* 产品页案例卡 */
.case-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  margin: 20px 0;
  box-shadow: 0 1px 6px rgba(0, 0, 0, 0.06);
}

.case-card-header {
  background: var(--red);
  color: #fff;
  padding: 12px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 15px;
}

.case-card-header .case-tag {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  padding: 3px 12px;
  border-radius: 4px;
  font-size: 14px;
}

.case-card-header .case-title {
  font-size: 17px;
  font-weight: 700;
}

.case-card-body {
  padding: 20px;
}

.case-info {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 15px;
  padding-bottom: 15px;
  border-bottom: 1px solid #eee;
}

.case-info-item {
  display: flex;
  align-items: center;
}

.case-info-item .label {
  color: var(--text-lighter);
  font-size: 13px;
  margin-right: 6px;
}

.case-info-item .value {
  color: var(--text);
  font-size: 15px;
  font-weight: 700;
}

.case-desc {
  margin-top: 12px;
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.7;
}

/* why-konche 产品页用 */
.why-konche {
  margin-top: 30px;
  padding: 20px;
  background: var(--bg-light);
  border-radius: 8px;
}

.why-konche h2 {
  margin-top: 0;
}

/* ====== 响应式 ====== */
@media (max-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

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

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

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .about-brief-content {
    grid-template-columns: 1fr;
  }

  .contact-layout {
    grid-template-columns: 1fr;
  }

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

  .signal-grid,
  .sub-card-grid,
  .poison-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

@media (max-width: 768px) {
  .container {
    padding: 0 12px;
  }

  /* 导航 */
  .menu-toggle {
    display: block;
    color: #333;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #fff;
    border-top: 1px solid #eee;
    flex-direction: column;
    padding: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .nav-links.show {
    display: flex;
  }

  .nav-links>li {
    width: 100%;
    text-align: left;
  }

  .nav-links>li>a {
    padding: 12px 20px;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
  }

  .nav-links>li>a:hover,
  .nav-links>li.active>a {
    background: #fafafa;
    color: var(--red);
  }

  .dropdown {
    position: static;
    display: block;
    background: #f9f9f9;
    box-shadow: none;
    border-radius: 0;
  }

  .dropdown li a {
    padding: 10px 30px;
  }

  .nav-cta {
    display: none;
  }

  /* 顶部栏 */
  .top-bar .container {
    flex-direction: column;
    gap: 4px;
    text-align: center;
  }

  /* Header */
  .site-header .container {
    flex-direction: column;
    text-align: center;
  }

  .logo-brand {
    flex-direction: column;
  }

  /* Hero */
  .hero-content {
    padding: 20px 15px 10px;
  }

  .hero-content h1 {
    font-size: 24px;
  }

  .hero-content .slide-sub {
    font-size: 14px;
  }

  .hero-image-area {
    padding: 0 15px 15px;
  }

  .hero-image-placeholder {
    height: 200px;
  }

  /* 产品网格 */
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .detail-grid {
    grid-template-columns: 1fr;
  }

  .case-grid {
    grid-template-columns: 1fr;
  }

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

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

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

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .news-dual {
    grid-template-columns: 1fr;
  }

  .about-brief-stats {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .promise-list {
    grid-template-columns: 1fr;
  }

  .solution-card-grid {
    grid-template-columns: 1fr;
  }

  .signal-grid,
  .sub-card-grid,
  .poison-grid {
    grid-template-columns: 1fr;
  }

  .sol-grid {
    grid-template-columns: 1fr;
  }

  .case-card-full .case-detail {
    grid-template-columns: 1fr;
  }

  /* 产品页 */
  .content-area {
    padding: 20px 15px;
  }

  .content-area h1 {
    font-size: 20px;
  }

  .content-area h2 {
    font-size: 18px;
  }

  .content-area table {
    font-size: 13px;
  }

  .content-area th,
  .content-area td {
    padding: 8px 6px;
  }

  .product-hero-params {
    flex-direction: column;
    gap: 10px;
  }

  .product-hero-btns {
    flex-direction: column;
  }

  .why-grid {
    grid-template-columns: 1fr;
  }

  .related-links {
    flex-direction: column;
  }

  .related-links a {
    width: 100%;
    text-align: center;
  }

  .custom-service .service-grid {
    grid-template-columns: 1fr;
  }

  .case-card-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }

  .case-info {
    flex-direction: column;
    gap: 8px;
  }

  /* CTA */
  .cta-btns {
    flex-direction: column;
    align-items: center;
  }

  .cta-promise {
    flex-direction: column;
    gap: 8px;
  }

  /* Section */
  .section {
    padding: 30px 0;
  }

  .section-title h2 {
    font-size: 22px;
  }

  /* 表格滚动 */
  .sol-table-wrap {
    overflow-x: auto;
  }
}

@media (max-width: 480px) {
  .product-grid {
    grid-template-columns: 1fr;
  }

  .client-grid {
    grid-template-columns: 1fr;
  }

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

  .cert-grid {
    grid-template-columns: 1fr;
  }

  .hero-content h1 {
    font-size: 18px;
  }

  .float-widget {
    right: 10px;
    bottom: 60px;
  }

  .float-btn {
    width: 40px;
    height: 40px;
    font-size: 18px;
  }
}

.product-overview {
  max-width: 1000px;
  margin: 0 auto;
}

.zx7-product-sidebar {
  width: 260px;
  background: #fff;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
  font-family: Arial, "Microsoft YaHei", sans-serif;
}

.zx7-product-sidebar-title {
  padding: 22px 24px;
  background: linear-gradient(135deg, #0b63ce, #063f8f);
  color: #fff;
  font-size: 22px;
  font-weight: bold;
  letter-spacing: 1px;
  position: relative;
}

.zx7-product-sidebar-title::after {
  content: "";
  position: absolute;
  left: 24px;
  bottom: 14px;
  width: 42px;
  height: 3px;
  background: #fff;
  border-radius: 3px;
}

.zx7-product-category-list {
  list-style: none;
  margin: 0;
  padding: 12px 0;
}

.zx7-product-category-item {
  margin: 0;
  padding: 0;
}

.zx7-product-category-item a {
  position: relative;
  display: block;
  padding: 15px 34px 15px 18px;
  color: #333;
  text-decoration: none;
  font-size: 15px;
  border-radius: 8px;
  transition: all .3s ease;
}

.zx7-product-category-item a::after {
  /* content: ""; */
  position: absolute;
  right: 18px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-top: 2px solid #aaa;
  border-right: 2px solid #aaa;
  transform: translateY(-50%) rotate(45deg);
  transition: all .3s ease;
}

.zx7-product-category-item a:hover {
  background: #f0f6ff;
  color: #0b63ce;
  padding-left: 24px;
}

.zx7-product-category-item a:hover::after {
  border-color: #0b63ce;
  right: 14px;
}

.zx7-product-category-item.active a {
  background: linear-gradient(135deg, #0b63ce, #0753b3);
  color: #fff;
  font-weight: bold;
}

.zx7-product-category-item.active a::after {
  border-color: #fff;
}

/* 手机端适配 */
@media (max-width: 768px) {
  .zx7-product-sidebar {
    width: 100%;
    border-radius: 10px;
  }

  .zx7-product-sidebar-title {
    font-size: 20px;
    padding: 18px 20px;
  }

  .zx7-product-sidebar-title::after {
    left: 20px;
    bottom: 10px;
  }

  .zx7-product-category-item {
    padding: 0 10px;
  }

  .zx7-product-category-item a {
    padding: 13px 32px 13px 16px;
    font-size: 14px;
  }
}

.qzx-sidebox-731 {
  width: 280px;
  background: #fff;
  border: 1px solid #e5e8ef;
  border-radius: 10px;
  overflow: hidden;
}

.qzx-menu-731,
.qzx-submenu-731 {
  list-style: none;
  margin: 0;
  padding: 0;
}

.qzx-menu-item-731 {
  border-bottom: 1px solid #edf0f5;
}

.qzx-menu-item-731:last-child {
  border-bottom: none;
}

.qzx-menu-title-731 {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 18px;
  font-size: 16px;
  color: #222;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.qzx-menu-title-731>a {
  color: #222;
}

.qzx-menu-title-731:hover {
  background: #f5f8ff;
  color: #0b72e7;
}

/* 右侧箭头 */
.qzx-menu-title-731 i {
  width: 8px;
  height: 8px;
  border-right: 2px solid #999;
  border-bottom: 2px solid #999;
  transform: rotate(45deg);
  transition: all 0.3s ease;
}

/* 展开时箭头旋转 */
.qzx-menu-item-731.qzx-active-731 .qzx-menu-title-731 i {
  transform: rotate(-135deg);
  border-color: #0b72e7;
}

.qzx-submenu-731 {
  display: none;
  background: #fafbfe;
}

.qzx-submenu-731 li a {
  display: block;
  padding: 12px 18px 12px 34px;
  font-size: 14px;
  color: #555;
  text-decoration: none;
  transition: all 0.3s ease;
}

.qzx-submenu-731 li a:hover {
  color: #0b72e7;
  background: #eef5ff;
  padding-left: 40px;
}

.qzx-menu-item-731.qzx-active-731 .qzx-submenu-731 {
  display: block;
}

/* 手机端 */
@media (max-width: 768px) {
  .qzx-sidebox-731 {
    width: 100%;
  }

  .qzx-menu-title-731 {
    font-size: 15px;
    padding: 14px 16px;
  }

  .qzx-submenu-731 li a {
    padding: 11px 16px 11px 30px;
  }
}