* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  font-family: "Segoe UI", "Helvetica Neue", Arial, "Microsoft YaHei", "PingFang SC", sans-serif;
  color: #333;
  background: #fff;
  line-height: 1.6;
}
a {
  text-decoration: none;
  color: inherit;
}
ul {
  list-style: none;
}
.container {
  width: 1200px;
  max-width: 92%;
  margin: 0 auto; 
}

/* ===== Top Bar ===== */
.top-bar {
  background: #0d47a1;
  color: #fff;
  font-size: 13px;
  padding: 6px 0;
}
.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.top-bar .slogan {
  letter-spacing: .5px;
}
.top-bar .links a {
  margin-left: 18px;
  opacity: .85;
  transition: opacity .3s;
}
.top-bar .links a:hover {
  opacity: 1;
}

/* ===== Header / Nav ===== */
.header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .06);
  position: sticky;
  top: 0;
  z-index: 100;
}
.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 78px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo .logo-icon {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: linear-gradient(135deg, #1e88e5, #0d47a1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 24px;
  font-weight: 700;
  box-shadow: 0 4px 10px rgba(30, 136, 229, .35);
}
.logo .logo-text {
  line-height: 1.2;
}
.logo .logo-text .cn {
  font-size: 20px;
  font-weight: 700;
  color: #0d47a1;
}
.logo .logo-text .en {
  font-size: 11px;
  color: #888;
  letter-spacing: 1px;
}
.nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.nav a {
  padding: 8px 16px;
  font-size: 15px;
  color: #444;
  border-radius: 6px;
  transition: all .3s;
  position: relative;
}
.nav a:hover,
.nav a.active {
  color: #1e88e5;
  background: #e3f2fd;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: #0d47a1;
  border-radius: 2px;
  transition: .3s;
}
.lang-switch {
  padding: 8px 16px;
  font-size: 14px;
  color: #444;
  border-radius: 6px;
  transition: all .3s;
  font-weight: 600;
  border: 1px solid #ddd;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  margin-left: 4px;
}
.lang-switch:hover {
  color: #1e88e5;
  background: #e3f2fd;
  border-color: #1e88e5;
}

/* ===== Banner Slider ===== */
.banner {
  position: relative;
  height: 560px;
  overflow: hidden;
  background: #0d47a1;
}
.banner .slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 1s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
}
.banner .slide.active {
  opacity: 1;
}
.banner .slide.bg1 { background: linear-gradient(120deg, #0d47a1 0%, #1e88e5 100%); }
.banner .slide.bg2 { background: linear-gradient(120deg, #0b3d91 0%, #26a69a 100%); }
.banner .slide.bg3 { background: linear-gradient(120deg, #0d47a1 0%, #43a047 100%); }
.banner .slide.bg4 { background: linear-gradient(120deg, #1a237e 0%, #1e88e5 100%); }
.banner .slide.bg5 { background: linear-gradient(120deg, #01579b 0%, #00897b 100%); }
.banner .slide.bg6 { background: linear-gradient(120deg, #0d47a1 0%, #5e35b1 100%); }
.banner .slide-inner {
  max-width: 860px;
  padding: 0 30px;
  transform: translateY(20px);
  transition: transform .8s ease .2s;
}
.banner .slide.active .slide-inner {
  transform: translateY(0);
}
.banner h2 {
  font-size: 46px;
  font-weight: 700;
  margin-bottom: 18px;
  letter-spacing: 1px;
  text-shadow: 0 2px 12px rgba(0, 0, 0, .25);
}
.banner p {
  font-size: 17px;
  opacity: .92;
  line-height: 1.9;
  max-width: 640px;
  margin: 0 auto 30px;
}
.banner .btn {
  display: inline-block;
  background: #fff;
  color: #0d47a1;
  font-weight: 600;
  padding: 12px 36px;
  border-radius: 40px;
  font-size: 15px;
  transition: all .3s;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .2);
}
.banner .btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, .3);
}
.banner .arrows button {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 46px;
  height: 46px;
  border: 1px solid rgba(255, 255, 255, .5);
  border-radius: 50%;
  background: rgba(255, 255, 255, .15);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  z-index: 10;
  transition: all .3s;
}
.banner .arrows button:hover {
  background: #fff;
  color: #0d47a1;
}
.banner .prev { left: 30px; }
.banner .next { right: 30px; }
.banner .dots {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}
.banner .dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .45);
  cursor: pointer;
  transition: all .3s;
}
.banner .dots span.active {
  background: #fff;
  width: 28px;
  border-radius: 6px;
}

/* ===== Section Titles ===== */
.section {
  padding: 78px 0;
}
.section-title {
  text-align: center;
  margin-bottom: 14px;
}
.section-title h3 {
  font-size: 32px;
  color: #0d47a1;
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding-bottom: 16px;
}
.section-title h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 46px;
  height: 3px;
  border-radius: 2px;
  background: #1e88e5;
}
.section-title p {
  color: #888;
  font-size: 14px;
  margin-top: 10px;
  letter-spacing: 1px;
}
.section.bg-gray {
  background: #f5f7fa;
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 26px;
  margin-top: 46px;
}
.stat-item {
  background: #fff;
  border-radius: 12px;
  padding: 34px 20px;
  text-align: center;
  box-shadow: 0 4px 18px rgba(13, 71, 161, .08);
  transition: all .3s;
  border-top: 3px solid transparent;
}
.stat-item:hover {
  transform: translateY(-6px);
  border-top-color: #1e88e5;
  box-shadow: 0 10px 28px rgba(13, 71, 161, .15);
}
.stat-item .icon {
  font-size: 40px;
  margin-bottom: 14px;
}
.stat-item .num {
  font-size: 40px;
  font-weight: 700;
  color: #0d47a1;
  line-height: 1.1;
}
.stat-item .num em {
  font-size: 20px;
  font-style: normal;
  font-weight: 600;
}
.stat-item .label {
  color: #666;
  font-size: 14px;
  margin-top: 8px;
}

/* ===== Feature Cards ===== */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 46px;
}
.feature-card {
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .06);
  transition: all .35s;
  border: 1px solid #eef1f5;
}
.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 14px 34px rgba(13, 71, 161, .14);
  border-color: #bbdefb;
}
.feature-card .thumb {
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 60px;
  position: relative;
  overflow: hidden;
}
.feature-card .thumb::after {
  content: "";
  position: absolute;
  top: -40%;
  right: -20%;
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: rgba(255, 255, 255, .12);
}
.t-blue { background: linear-gradient(135deg, #1e88e5, #0d47a1); }
.t-cyan { background: linear-gradient(135deg, #26a69a, #00695c); }
.t-green { background: linear-gradient(135deg, #43a047, #1b5e20); }
.t-purple { background: linear-gradient(135deg, #7e57c2, #4527a0); }
.t-orange { background: linear-gradient(135deg, #fb8c00, #e65100); }
.t-teal { background: linear-gradient(135deg, #00bcd4, #006064); }
.feature-card .body {
  padding: 22px 22px 26px;
}
.feature-card .body h4 {
  font-size: 18px;
  color: #0d47a1;
  margin-bottom: 10px;
}
.feature-card .body p {
  font-size: 14px;
  color: #666;
  line-height: 1.8;
  min-height: 76px;
}
.feature-card .more {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  color: #1e88e5;
  font-weight: 500;
  transition: letter-spacing .3s;
}
.feature-card .more:hover {
  letter-spacing: 1px;
}

/* ===== CTA ===== */
.cta {
  background: linear-gradient(135deg, #0d47a1, #1e88e5);
  color: #fff;
  padding: 70px 0 78px;
  text-align: center;
}
.cta h3 {
  font-size: 34px;
  letter-spacing: 2px;
  margin-bottom: 10px;
}
.cta p {
  opacity: .9;
  font-size: 16px;
  margin-bottom: 34px;
}

/* ===== News ===== */
.section-title-left {
  margin-bottom: 34px;
}
.section-title-left h3 {
  font-size: 28px;
  color: #0d47a1;
  font-weight: 700;
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}
.section-title-left h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 46px;
  height: 3px;
  border-radius: 2px;
  background: #1e88e5;
}
.news-slider {
  position: relative;
  overflow: hidden;
}
.news-track {
  display: flex;
  transition: transform .5s ease;
  gap: 24px;
}
.news-card {
  flex: 0 0 calc(33.333% - 16px);
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 18px rgba(0, 0, 0, .06);
  border: 1px solid #eef1f5;
  transition: all .35s;
  position: relative;
}
.news-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 34px rgba(13, 71, 161, .14);
  border-color: #bbdefb;
}
.news-card .news-img {
  position: relative;
  height: 280px;
  overflow: hidden;
  background: #e3f2fd;
}
.news-card .news-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s ease;
}
.news-card:hover .news-img img {
  transform: scale(1.05);
}
.news-card .news-caption {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  background: #fff;
  border-radius: 8px;
  padding: 16px 18px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, .08);
}
.news-card .news-date {
  font-size: 12px;
  color: #888;
  margin-bottom: 6px;
  letter-spacing: .5px;
}
.news-card h5 {
  font-size: 16px;
  color: #333;
  line-height: 1.5;
  font-weight: 600;
  transition: color .3s;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.news-card:hover h5 {
  color: #1e88e5;
}
.news-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 28px;
}
.news-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #cfd8dc;
  cursor: pointer;
  transition: all .3s;
}
.news-dots span.active {
  background: #1e88e5;
  width: 28px;
  border-radius: 6px;
}

/* ===== Footer ===== */
.footer {
  background: #0a2e5c;
  color: #b0c4de;
  padding: 52px 0 0;
  font-size: 14px;
}
.footer .cols {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
  padding-bottom: 40px;
}
.footer h5 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 18px;
  position: relative;
  padding-bottom: 10px;
}
.footer h5::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 28px;
  height: 2px;
  background: #1e88e5;
}
.footer .about p {
  line-height: 1.9;
  margin-top: 12px;
}
.footer ul li {
  padding: 5px 0;
}
.footer ul li a {
  opacity: .85;
  transition: all .3s;
}
.footer ul li a:hover {
  opacity: 1;
  color: #90caf9;
  padding-left: 4px;
}
.footer .contact li {
  display: flex;
  gap: 8px;
  align-items: flex-start;
}
.footer .copyright {
  border-top: 1px solid rgba(255, 255, 255, .12);
  padding: 20px 0;
  text-align: center;
  font-size: 13px;
}
.footer .copyright a {
  color: #90caf9;
}
.footer .friend-links {
  margin-top: 6px;
  opacity: .75;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .stats { grid-template-columns: repeat(2, 1fr); }
  .features { grid-template-columns: repeat(2, 1fr); }
  .news-list { grid-template-columns: 1fr; }
  .news-card { flex: 0 0 calc(33.333% - 16px); }
  .news-card .news-img { height: 200px; }
  .news-card .news-caption { padding: 12px 14px; }
  .news-card h5 { font-size: 15px; }
  .footer .cols { grid-template-columns: 1fr 1fr; }
  .banner { height: 440px; }
  .banner h2 { font-size: 34px; }
}
@media (max-width: 640px) {
  .top-bar .links { display: none; }
  .nav {
    position: fixed;
    top: 0;
    right: -260px;
    width: 260px;
    height: 100vh;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 70px 30px;
    gap: 18px;
    box-shadow: -4px 0 20px rgba(0,0,0,.12);
    transition: right .35s ease;
  }
  .nav.open { right: 0; }
  .nav-toggle { display: flex; }
  .stats { grid-template-columns: 1fr; }
  .features { grid-template-columns: 1fr; }
  .news-track { gap: 16px; }
  .news-card { flex: 0 0 calc(100% - 0px); }
  .news-card .news-img { height: 220px; }
  .news-card .news-caption { left: 12px; right: 12px; bottom: 12px; padding: 14px; }
  .news-card h5 { font-size: 15px; }
  .footer .cols { grid-template-columns: 1fr; }
  .banner { height: 380px; }
  .banner h2 { font-size: 26px; }
  .banner p { font-size: 15px; }
  .section-title h3 { font-size: 25px; }
  .section-title-left h3 { font-size: 24px; }
  .cta h3 { font-size: 24px; }
  .lang-switch {
    padding: 6px 12px;
    font-size: 13px;
    margin-left: 0;
  }
}

/* ===== CTA 联系区优化 ===== */
/* 电话：纯文字居中展示，无背景板 */
.cta .cta-phone {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0 auto 42px;
}
.cta .cta-phone-icon {
  font-size: 26px;
  line-height: 1;
}
.cta .cta-phone-label {
  font-size: 16px;
  color: rgba(255, 255, 255, .85);
  letter-spacing: .5px;
}
.cta .cta-phone-num {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #fff;
  transition: color .3s;
}
.cta .cta-phone-num:hover {
  color: #bbdefb;
}

/* 二维码卡片：统一结构 */
.cta .contact-row {
  display: flex;
  justify-content: center;
  align-items: stretch;
  gap: 48px;
  flex-wrap: wrap;
}

.cta .contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  min-width: 220px;
  background: rgba(255, 255, 255, .08);
  border: 1px solid rgba(255, 255, 255, .18);
  border-radius: 20px;
  padding: 28px 32px 24px;
  transition: all .35s;
}
.cta .contact-card:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, .14);
  border-color: rgba(255, 255, 255, .35);
  box-shadow: 0 14px 32px rgba(0, 0, 0, .22);
}

.cta .contact-card-title {
  font-size: 18px;
  font-weight: 600;
  color: #fff;
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: 1px;
}

.cta .contact-icon {
  font-size: 22px;
  line-height: 1;
}

.cta .qr {
  background: #fff;
  padding: 12px;
  border-radius: 14px;
  box-shadow: 0 6px 20px rgba(0, 0, 0, .22);
  transition: transform .3s;
}
.cta .qr:hover {
  transform: scale(1.05);
}

.cta .qr-box {
  width: 130px;
  height: 130px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  font-weight: 700;
  text-align: center;
  line-height: 1.6;
  color: #fff;
}
.cta .qr-box .qr-brand {
  font-size: 18px;
  letter-spacing: 1px;
}

.cta .qr-box.qr-whatsapp {
  background: linear-gradient(135deg, #25D366, #128C7E);
}

.cta .qr-box.qr-wechat {
  background: linear-gradient(135deg, #07C160, #06AD56);
}

.cta .qr-text {
  text-align: center;
  font-size: 13px;
  color: #0d47a1;
  font-weight: 600;
  margin-top: 10px;
  letter-spacing: .5px;
}

@media (max-width: 640px) {
  .cta .cta-phone {
    gap: 8px;
    margin-bottom: 36px;
  }
  .cta .cta-phone-num {
    font-size: 24px;
  }
  .cta .cta-phone-label {
    font-size: 14px;
  }
  .cta .contact-row {
    gap: 26px;
  }
  .cta .contact-card {
    min-width: 160px;
    padding: 20px 20px 18px;
  }
  .cta .qr-box {
    width: 100px;
    height: 100px;
    font-size: 13px;
  }
  .cta .qr-box .qr-brand {
    font-size: 15px;
  }
  .cta .contact-card-title {
    font-size: 16px;
  }
}

/* ===== 公司简介 - 背景图版 ===== */
#strength {
  padding: 78px 0;
  background: url('../images/gsjj.jpg') center/cover no-repeat;
  background-attachment: scroll;  /* 或者直接删掉这行 */
  position: relative;
}
#strength .mask {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.1);
}
#strength .container {
  position: relative;
  z-index: 1;
}
#strength .section-title h3 {
  color: #0a2e5c;
}
#strength .intro-text {
  max-width: 820px;
  margin: 0 auto;
  font-size: 16px;
  line-height: 1.9;
  color: #1e2a41;
  text-align: center;
  background: rgba(255, 255, 255, 0.78);
  padding: 36px 42px;
  border-radius: 16px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(2px);
}
#strength .intro-text p {
  margin-bottom: 16px;
}
#strength .intro-text p:last-child {
  margin-bottom: 0;
}
/* ===== 服务支持 - 颜色过白 ===== */
#service {
  background: #f5f7fa;  /* 浅灰蓝，柔和一些 */
}

/* ===== 产品详情页（病毒采样等系列） ===== */
.breadcrumb {
  background: #f0f4f8;
  border-bottom: 1px solid #e6ebf1;
  padding: 14px 0;
  font-size: 14px;
  color: #888;
}
.breadcrumb .container {
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumb a {
  color: #1e88e5;
  transition: color .3s;
}
.breadcrumb a:hover {
  color: #0d47a1;
}

.product-banner,
.page-banner {
  width: 100%;
  height: 320px;
  overflow: hidden;
}
.product-banner img,
.page-banner img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

.product-intro {
  margin-bottom: 36px;
  text-align: center;
}

@media (max-width: 992px) {
  .product-banner,
  .page-banner {
    height: 260px;
  }
}
@media (max-width: 640px) {
  .product-banner,
  .page-banner {
    height: 180px;
  }
}

/* ===== 新闻详情页 ===== */
.news-detail {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 14px;
  padding: 44px 52px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .05);
  margin-top: -60px;
  position: relative;
  z-index: 2;
  margin-bottom: 48px;
}
.news-detail h1 {
  font-size: 26px;
  color: #0d47a1;
  line-height: 1.5;
  margin-bottom: 18px;
}
.news-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  padding-bottom: 20px;
  margin-bottom: 26px;
  border-bottom: 1px solid #eef1f5;
  font-size: 13px;
  color: #888;
}
.news-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.news-meta i {
  color: #1e88e5;
}
.news-content {
  font-size: 15px;
  line-height: 2;
  color: #555;
}
.news-content p {
  margin-bottom: 18px;
}
.news-content h2 {
  font-size: 19px;
  color: #0d47a1;
  margin: 30px 0 14px;
  padding-left: 14px;
  border-left: 4px solid #1e88e5;
}
.news-content ol,
.news-content ul {
  margin: 0 0 18px;
  padding-left: 26px;
}
.news-content li {
  margin-bottom: 10px;
}
.news-content strong {
  color: #333;
}
.news-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid #eef1f5;
}
.news-tags a {
  display: inline-block;
  padding: 6px 16px;
  font-size: 13px;
  color: #1e88e5;
  background: #f0f7ff;
  border: 1px solid #d7e9fb;
  border-radius: 20px;
  transition: all .3s;
}
.news-tags a:hover {
  color: #fff;
  background: #1e88e5;
  border-color: #1e88e5;
}

.related-news h3 {
  font-size: 22px;
  color: #0d47a1;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 10px;
}
.related-news h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 42px;
  height: 3px;
  border-radius: 2px;
  background: #1e88e5;
}
.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.news-grid .news-card {
  flex: none;
}

@media (max-width: 992px) {
  .news-detail {
    margin-top: -40px;
    padding: 34px 30px;
  }
  .news-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .news-detail {
    margin-top: -30px;
    padding: 26px 20px;
  }
  .news-detail h1 {
    font-size: 21px;
  }
  .news-meta {
    gap: 12px;
  }
  .news-content {
    font-size: 14px;
    line-height: 1.9;
  }
}
.product-intro h2 {
  font-size: 32px;
  color: #0d47a1;
  margin-bottom: 10px;
}
.product-intro .intro-sub {
  font-size: 16px;
  color: #1e88e5;
  margin-bottom: 18px;
  letter-spacing: .5px;
}
.product-intro p:not(.intro-sub) {
  max-width: 900px;
  margin: 0 auto;
  font-size: 15px;
  line-height: 1.9;
  color: #666;
}

/* 顶部产品分类标签 */
.product-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 38px;
}
.product-tabs a {
  display: inline-block;
  padding: 12px 28px;
  font-size: 14px;
  color: #555;
  background: #fff;
  border: 1px solid #dfe6ee;
  border-radius: 6px;
  transition: all .3s;
  text-align: center;
}
.product-tabs a:hover {
  color: #1e88e5;
  border-color: #1e88e5;
}
.product-tabs a.active {
  color: #fff;
  background: linear-gradient(135deg, #1e88e5, #0d47a1);
  border-color: #0d47a1;
  box-shadow: 0 4px 14px rgba(13, 71, 161, .2);
}

.product-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  margin-bottom: 56px;
}
.product-item {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 12px;
  overflow: hidden;
  text-align: center;
  padding-bottom: 0;
  transition: all .35s;
}
.product-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 14px 34px rgba(13, 71, 161, .12);
  border-color: #bbdefb;
}
.product-item .product-img {
  position: relative;
  background: #f7fafd;
  padding: 18px;
  aspect-ratio: 1 / 1;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-item .product-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 8px;
  transition: transform .5s ease;
}
.product-item:hover .product-img img {
  transform: scale(1.05);
}
.product-tag {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: .5px;
  z-index: 2;
}
.product-tag.new {
  background: #43a047;
}
.product-tag.hot {
  background: #e53935;
}
.product-item h4 {
  font-size: 15px;
  color: #333;
  padding: 16px 16px 6px;
  line-height: 1.45;
  min-height: 44px;
}
.product-item p {
  font-size: 13px;
  color: #888;
  line-height: 1.7;
  padding: 0 16px 14px;
  min-height: 68px;
}
.product-inquire {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 16px 16px;
  padding: 10px 16px;
  font-size: 14px;
  color: #555;
  background: #f0f4f8;
  border: 1px solid #dfe6ee;
  border-radius: 6px;
  transition: all .3s;
}
.product-inquire span {
  flex: 1;
  text-align: center;
}
.product-inquire:hover {
  color: #fff;
  background: linear-gradient(135deg, #1e88e5, #0d47a1);
  border-color: #0d47a1;
}

.inquiry {
  background: #fff;
  border: 1px solid #eef1f5;
  border-radius: 14px;
  padding: 36px 40px;
  box-shadow: 0 6px 24px rgba(0, 0, 0, .05);
}
.inquiry h3 {
  font-size: 22px;
  color: #0d47a1;
  margin-bottom: 8px;
}
.inquiry > p {
  font-size: 14px;
  color: #888;
  margin-bottom: 26px;
}
.inquiry-form .form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.inquiry-form input,
.inquiry-form textarea {
  width: 100%;
  border: 1px solid #dfe6ee;
  border-radius: 8px;
  padding: 12px 14px;
  font-size: 14px;
  font-family: inherit;
  color: #333;
  background: #fafbfd;
  transition: all .3s;
  box-sizing: border-box;
}
.inquiry-form input:focus,
.inquiry-form textarea:focus {
  outline: none;
  border-color: #1e88e5;
  background: #fff;
  box-shadow: 0 0 0 3px rgba(30, 136, 229, .12);
}
.inquiry-form textarea {
  resize: vertical;
  margin-bottom: 16px;
}
.inquiry-form .btn {
  display: inline-block;
  background: linear-gradient(135deg, #1e88e5, #0d47a1);
  color: #fff;
  font-size: 15px;
  padding: 12px 44px;
  border-radius: 24px;
  border: none;
  cursor: pointer;
  transition: all .3s;
  box-shadow: 0 4px 12px rgba(30, 136, 229, .3);
}
.inquiry-form .btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30, 136, 229, .4);
}

@media (max-width: 1100px) {
  .product-list {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .breadcrumb {
    font-size: 13px;
  }
  .product-tabs {
    gap: 8px;
  }
  .product-tabs a {
    padding: 10px 18px;
    font-size: 13px;
  }
  .product-list {
    grid-template-columns: 1fr;
  }
  .product-intro h2 {
    font-size: 24px;
  }
  .inquiry {
    padding: 26px 20px;
  }
  .inquiry-form .form-row {
    grid-template-columns: 1fr;
  }
}

/* ===== 服务支持详情页（ODM / OEM / 售后保障） ===== */
.service-detail {
  max-width: 900px;
  margin: 0 auto;
}
.service-detail > p {
  font-size: 16px;
  line-height: 2;
  color: #4a5568;
  margin-bottom: 16px;
}
.service-detail h4 {
  font-size: 19px;
  color: #0d47a1;
  margin: 34px 0 16px;
  padding-left: 12px;
  border-left: 4px solid #1e88e5;
  line-height: 1.3;
}
.service-detail ul li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 12px;
  font-size: 15px;
  line-height: 1.9;
  color: #4a5568;
}
.service-detail ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #1e88e5;
}
.service-cta {
  margin-top: 44px;
  text-align: center;
  background: #f5f7fa;
  border: 1px solid #e6ebf1;
  border-radius: 12px;
  padding: 32px 24px;
}
.service-cta p {
  font-size: 16px;
  line-height: 1.9;
  color: #33475b;
  margin-bottom: 20px;
}
.service-btn {
  display: inline-block;
  background: linear-gradient(135deg, #1e88e5, #0d47a1);
  color: #fff;
  font-size: 15px;
  padding: 12px 40px;
  border-radius: 24px;
  transition: all .3s;
}
.service-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(13, 71, 161, .28);
  color: #fff;
}

@media (max-width: 640px) {
  .service-detail > p,
  .service-detail ul li {
    font-size: 14px;
  }
  .service-cta {
    padding: 24px 18px;
  }
}