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

body {
  font-family: "Microsoft YaHei", "PingFang SC", -apple-system, BlinkMacSystemFont, sans-serif;
  color: #333;
  background: #fff;
  line-height: 1.6;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s;
}

a:hover {
  color: #1890ff;
}

ul, li {
  list-style: none;
}

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

.container-custom {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.btn {
  display: inline-block;
  padding: 10px 24px;
  border-radius: 4px;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
  text-align: center;
  font-weight: 500;
}

.btn-sm {
  padding: 6px 16px;
  font-size: 13px;
}

.btn-primary {
  background: linear-gradient(90deg, #1890ff, #096dd9);
  color: #fff;
}

.btn-primary:hover {
  opacity: 0.9;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(24, 144, 255, 0.3);
  color: #fff;
}

.btn-outline {
  border: 1px solid #1890ff;
  color: #1890ff;
  background: transparent;
}

.btn-outline:hover {
  background: #1890ff;
  color: #fff;
}

.btn-orange {
  background: linear-gradient(90deg, #ff7a45, #fa541c);
  color: #fff;
}

.btn-orange:hover {
  opacity: 0.9;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(250, 84, 28, 0.3);
}

.btn-white {
  background: #fff;
  color: #1890ff;
}

.btn-white:hover {
  background: #f0f0f0;
  color: #1890ff;
}

.btn-white-outline {
  border: 1px solid #fff;
  color: #fff;
  background: transparent;
}

.btn-white-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.btn-outline-white {
  border: 1px solid rgba(255, 255, 255, 0.5);
  color: #fff;
  background: transparent;
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.1);
  color: #fff;
}

.sjiyun-nav {
  background: #fff;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
  position: sticky;
  top: 0;
  z-index: 1000;
}

#header {
  position: fixed !important;
  top: 0 !important;
  left: 0 !important;
  right: 0 !important;
  z-index: 9999 !important;
  background: #fff;
  transition: all 0.3s ease;
  will-change: transform;
}

body {
  padding-top: 72px;
}

@media (max-width: 991px) {
  body {
    padding-top: 60px;
  }
}

#header.nav-fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

#header.nav-scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.12) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.promise-box .promise-text {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.promise-box .promise-title {
  font-size: 16px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.9);
}

.promise-box .promise-desc {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}

.sjiyun-nav .container-custom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 70px;
}

.nav-left {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav-logo a {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: bold;
  color: #1890ff;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #1890ff, #096dd9);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
}

.logo-img {
  height: 40px;
  width: auto;
}

.nav-menu {
  display: flex;
  gap: 5px;
}

.nav-item {
  position: relative;
  padding: 0 16px;
  height: 70px;
  line-height: 70px;
  cursor: pointer;
  font-size: 15px;
  color: #333;
  transition: color 0.3s;
}

.nav-item:hover,
.nav-item.active {
  color: #1890ff;
}

.nav-item.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 30px;
  height: 3px;
  background: #1890ff;
  border-radius: 2px;
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  padding: 15px 0;
  min-width: 200px;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 1001;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  transition: background 0.3s;
}

.dropdown-item:hover {
  background: #f5f7fa;
}

.dropdown-item img {
  width: 36px;
  height: 36px;
  border-radius: 6px;
}

.dropdown-info .dropdown-title {
  font-size: 14px;
  color: #333;
  font-weight: 500;
}

.dropdown-info .dropdown-desc {
  font-size: 12px;
  color: #999;
  margin-top: 2px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.nav-link {
  font-size: 14px;
  color: #666;
}

.nav-link:hover {
  color: #1890ff;
}

.nav-btns {
  display: flex;
  gap: 10px;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 5px;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: #333;
  transition: all 0.3s;
}

.mobile-menu {
  position: fixed;
  top: 0;
  left: -100%;
  width: 280px;
  max-width: 80%;
  height: 100vh;
  background: #fff;
  z-index: 2000;
  transition: left 0.3s;
  overflow-y: auto;
  overflow-x: hidden;
}

.mobile-menu::-webkit-scrollbar {
  display: none;
}

.mobile-menu {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.mobile-menu.active {
  left: 0;
}

.mobile-menu-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px;
  border-bottom: 1px solid #f0f0f0;
  font-size: 16px;
  font-weight: 500;
  overflow: hidden;
  position: relative;
  z-index: 10;
  background: #fff;
}

.mobile-menu-header * {
  position: relative;
  z-index: 1;
}

.mobile-menu-close {
  font-size: 24px;
  cursor: pointer;
  color: #999;
}

.mobile-menu-list {
  padding: 10px 0;
}

.mobile-menu-item {
  border-bottom: 1px solid #f5f5f5;
}

.mobile-menu-item > a,
.mobile-menu-item > span {
  display: block;
  padding: 15px 20px;
  font-size: 15px;
  color: #333;
}

.mobile-submenu {
  background: #fafafa;
  padding: 5px 0;
}

.mobile-submenu a {
  display: block;
  padding: 12px 30px;
  font-size: 14px;
  color: #666;
}

.mobile-menu-mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
}

.mobile-menu-mask.active {
  opacity: 1;
  visibility: visible;
}

.sjiyun-banner {
  position: relative;
  overflow: hidden;
}

.banner-swiper {
  position: relative;
}

/* 轮播图左侧标题导航 */
.banner-with-nav {
  position: relative;
  height: var(--banner-height, 420px);
}

.banner-nav-left {
  position: absolute;
  left: calc(50% - 600px);
  top: 50%;
  transform: translateY(-50%);
  z-index: 15;
  width: 200px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  background: transparent;
  padding: 0;
}

.banner-nav-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  cursor: pointer;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.7);
  transition: all 0.3s ease;
  position: relative;
}

.banner-nav-item:hover {
  color: #fff;
}

.banner-nav-item.active {
  color: #fff;
  font-weight: 600;
}

.banner-nav-item.active::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  width: 30px;
  height: 2px;
  background: #2b6fff;
}

.banner-nav-text {
  flex: 1;
  text-align: right;
  white-space: normal;
  word-break: break-all;
}

.banner-nav-arrow {
  display: none;
}

.banner-swiper-with-nav {
  width: 100%;
  height: 100%;
}

.banner-swiper-with-nav .banner-slide {
  padding-left: 230px;
}

.banner-slide-bg {
  background-color: #0f172a;
  background-image: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.banner-slide-bg::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%231890ff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  z-index: 1;
}

.banner-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.85) 0%, rgba(15, 23, 42, 0.5) 50%, rgba(15, 23, 42, 0.2) 100%);
  z-index: 2;
}

.banner-slide {
  height: var(--banner-height, 420px);
  display: flex;
  align-items: flex-end;
  padding-bottom: 60px;
  position: relative;
  z-index: 3;
}

.banner-content {
  color: #fff;
  flex: 1;
  max-width: 600px;
  position: relative;
  z-index: 2;
}

.banner-top-label {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.banner-label-text {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.95);
}

.banner-badge {
  display: inline-block;
  padding: 2px 10px;
  background: #e74c3c;
  color: #fff;
  font-size: 13px;
  font-weight: bold;
  border-radius: 4px;
}

.banner-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 20px;
  font-size: 13px;
  margin-bottom: 20px;
  color: #ffd700;
}

.banner-title {
  font-size: 42px;
  font-weight: bold;
  margin-bottom: 16px;
  line-height: 1.3;
}

.banner-desc {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 30px;
  line-height: 1.8;
}

.banner-btns {
  display: flex;
  gap: 15px;
}

.banner-img {
  display: none;
}

.banner-img-icon {
  font-size: 120px;
  opacity: 0.8;
}

.swiper-pagination-bullet-active {
  background: #1890ff;
}

.quick-actions {
  background: #fff;
  margin-top: 0;
  position: relative;
  z-index: 10;
  border-radius: 12px;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.quick-actions-inner {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.quick-item {
  padding: 28px 30px;
  border-right: 1px solid #f0f0f0;
  transition: all 0.3s;
  display: block;
}

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

.quick-item:hover {
  background: #f8fafc;
}

.quick-item h5 {
  font-size: 18px;
  margin-bottom: 8px;
  color: #1a1a2e;
}

.quick-item p {
  font-size: 13px;
  color: #666;
  margin-bottom: 12px;
}

.quick-tag {
  display: inline-block;
  padding: 4px 12px;
  background: #fff2e8;
  color: #fa541c;
  font-size: 12px;
  border-radius: 3px;
}

.section {
  padding: 70px 0;
}

.section-title {
  text-align: center;
  margin-bottom: 50px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: bold;
  color: #1a1a2e;
  margin-bottom: 12px;
}

.section-title p {
  font-size: 15px;
  color: #666;
}

.sjiyun-product {
  background: #fff;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.product-card {
  background: #fff;
  border: 1px solid #e8e8e8;
  border-radius: 10px;
  padding: 28px;
  transition: all 0.3s;
  position: relative;
  overflow: hidden;
}

.product-card:hover {
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
  transform: translateY(-5px);
  border-color: #1890ff;
}

.product-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  padding: 4px 12px;
  font-size: 12px;
  border-radius: 4px;
  font-weight: 500;
}

.badge-hot {
  background: #fff2e8;
  color: #fa541c;
}

.badge-new {
  background: #f6ffed;
  color: #52c41a;
}

.badge-recommend {
  background: #e6f7ff;
  color: #1890ff;
}

.product-icon {
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, #e6f7ff, #bae7ff);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin-bottom: 20px;
}

.product-icon img {
  width: 100%;
  height: 100%;
  border-radius: 10px;
  object-fit: cover;
}

.product-name {
  font-size: 18px;
  font-weight: bold;
  color: #1a1a2e;
  margin-bottom: 10px;
}

.product-desc {
  font-size: 13px;
  color: #666;
  line-height: 1.6;
  margin-bottom: 20px;
  min-height: 42px;
}

.product-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 15px;
  border-top: 1px dashed #e8e8e8;
}

.product-price {
  color: #fa541c;
}

.product-price .symbol {
  font-size: 14px;
}

.product-price .num {
  font-size: 28px;
  font-weight: bold;
}

.product-price .unit {
  font-size: 12px;
  color: #999;
}

.sjiyun-solution {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  color: #fff;
}

.sjiyun-solution .section-title h2 {
  color: #fff;
}

.sjiyun-solution .section-title p {
  color: rgba(255, 255, 255, 0.7);
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.solution-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  padding: 30px 24px;
  text-align: center;
  transition: all 0.3s;
}

.solution-item:hover {
  background: rgba(24, 144, 255, 0.1);
  border-color: rgba(24, 144, 255, 0.3);
  transform: translateY(-5px);
}

.solution-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.solution-item h4 {
  font-size: 18px;
  margin-bottom: 10px;
  color: #fff;
}

.solution-item p {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  line-height: 1.6;
}

.sjiyun-infra {
  background: #f8fafc;
}

.infra-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.infra-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.infra-stat {
  text-align: center;
  padding: 35px 20px;
  background: #fff;
  border-radius: 12px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
  transition: all 0.3s;
}

.infra-stat:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

.infra-stat .num {
  font-size: 42px;
  font-weight: bold;
  background: linear-gradient(90deg, #1890ff, #096dd9);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}

.infra-stat .label {
  font-size: 14px;
  color: #666;
}

.infra-map {
  height: 350px;
  background: linear-gradient(135deg, #e6f7ff, #f0f5ff);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.infra-map-icon {
  font-size: 180px;
  opacity: 0.6;
}

.sjiyun-cert {
  padding: 50px 0;
  background: #fff;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
}

.cert-item {
  text-align: center;
  padding: 30px 20px;
  background: #f8fafc;
  border-radius: 10px;
  transition: all 0.3s;
}

.cert-item:hover {
  background: #e6f7ff;
  transform: translateY(-3px);
}

.cert-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 15px;
  background: linear-gradient(135deg, #1890ff, #096dd9);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
}

.cert-icon img {
  width: 100%;
  height: 100%;
  border-radius: 12px;
  object-fit: contain;
}

.cert-item h5 {
  font-size: 15px;
  color: #333;
}

.sjiyun-news {
  background: #f8fafc;
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.news-column {
  background: #fff;
  border-radius: 10px;
  padding: 24px;
}

.news-column-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid #1890ff;
}

.news-column-head h4 {
  font-size: 18px;
  color: #1a1a2e;
}

.news-column-head a {
  font-size: 13px;
  color: #1890ff;
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.news-item {
  display: flex;
  gap: 10px;
  font-size: 13px;
  line-height: 1.5;
}

.news-item .dot {
  width: 6px;
  height: 6px;
  background: #1890ff;
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.news-item a {
  color: #333;
  transition: color 0.3s;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-item a:hover {
  color: #1890ff;
}

.news-item .date {
  color: #999;
  font-size: 12px;
  flex-shrink: 0;
}

.sjiyun-cta {
  background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
  padding: 60px 0;
  color: #fff;
}

.cta-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cta-info h3 {
  font-size: 28px;
  margin-bottom: 10px;
}

.cta-info p {
  font-size: 15px;
  opacity: 0.9;
}

.cta-btns {
  display: flex;
  gap: 15px;
}

.sjiyun-footer {
  background: #0f172a;
  color: rgba(255, 255, 255, 0.7);
}

.footer-top {
  padding: 60px 0 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1.5fr;
  gap: 40px;
}

.footer-col h5 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 20px;
  font-weight: 500;
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
  transition: color 0.3s;
}

.footer-col ul li a:hover {
  color: #1890ff;
}

.footer-about .footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  font-weight: bold;
  color: #fff;
  margin-bottom: 15px;
}

.footer-about .footer-desc {
  font-size: 13px;
  line-height: 1.8;
  margin-bottom: 15px;
  color: rgba(255, 255, 255, 0.6);
}

.footer-contact .contact-item {
  font-size: 13px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.7);
}

.contact-icon {
  font-size: 16px;
}

.footer-qrcode {
  margin-top: 15px;
}

.footer-qrcode img {
  width: 100px;
  height: 100px;
  border-radius: 8px;
}

.footer-bottom {
  padding: 25px 0;
  background: #0a0f1a;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.footer-record a,
.footer-record span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  margin-right: 15px;
}

.footer-copyright {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
}

.footer-links {
  margin-top: 15px;
  padding-top: 15px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-links span {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  margin-right: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  margin-right: 15px;
}

.footer-links a:hover {
  color: #1890ff;
}

@media (max-width: 1199px) {
  .container-custom {
    max-width: 960px;
  }

  .nav-left {
    gap: 20px;
  }

  .nav-item {
    padding: 0 12px;
    font-size: 14px;
  }

  .footer-grid {
    gap: 30px;
  }
}

@media (max-width: 991px) {
  .container-custom {
    max-width: 720px;
  }

  .nav-menu {
    display: none;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .nav-btns {
    display: none;
  }

  .nav-link.console-link {
    display: none;
  }

  .nav-right .control,
  .nav-right .no-login,
  .nav-right .login-in {
    display: none !important;
  }

  .banner-slide {
    height: calc(var(--banner-height, 420px) * 0.85);
  }

  .banner-overlay {
    background: linear-gradient(90deg, rgba(15, 23, 42, 0.8) 0%, rgba(15, 23, 42, 0.4) 60%, rgba(15, 23, 42, 0.2) 100%);
  }

  .banner-title {
    font-size: 32px;
  }

  .banner-desc {
    font-size: 14px;
  }

  .banner-img {
    display: none;
  }

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

  .quick-item {
    border-right: 1px solid #f0f0f0;
    border-bottom: 1px solid #f0f0f0;
  }

  .quick-item:nth-child(2n) {
    border-right: none;
  }

  .quick-item:nth-last-child(-n+2) {
    border-bottom: none;
  }

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

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

  .infra-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .infra-map {
    height: 250px;
  }

  .infra-map-icon {
    font-size: 120px;
  }

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

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

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

  .footer-about {
    grid-column: span 2;
  }

  .cta-content {
    flex-direction: column;
    gap: 25px;
    text-align: center;
  }
}

@media (max-width: 767px) {
  .container-custom {
    padding: 0 15px;
  }

  .sjiyun-nav .container-custom {
    height: 60px;
  }

  .nav-logo a {
    font-size: 18px;
  }

  .logo-icon {
    width: 34px;
    height: 34px;
    font-size: 16px;
  }

  .logo-img {
    height: 34px;
  }

  .banner-slide {
    height: calc(var(--banner-height, 500px) * 0.7);
    text-align: left;
    align-items: flex-end;
    padding-bottom: 30px;
  }

  .banner-nav-left {
    display: none;
  }

  .banner-swiper-with-nav .banner-slide {
    padding-left: 20px;
  }

  .banner-overlay {
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.6) 0%, rgba(15, 23, 42, 0.8) 100%);
  }

  .banner-content {
    max-width: 100%;
  }

  .banner-tag {
    font-size: 12px;
    margin-bottom: 15px;
  }

  .banner-title {
    font-size: 24px;
    margin-bottom: 12px;
  }

  .banner-desc {
    font-size: 13px;
    margin-bottom: 20px;
  }

  .banner-btns {
    justify-content: flex-start;
  }

  .btn {
    padding: 8px 20px;
    font-size: 13px;
  }

  .quick-actions {
    margin-top: 0;
    border-radius: 8px;
  }

  .quick-actions-inner {
    grid-template-columns: 1fr;
  }

  .quick-item {
    padding: 20px;
    border-right: none;
    border-bottom: 1px solid #f0f0f0;
  }

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

  .section {
    padding: 50px 0;
  }

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

  .section-title h2 {
    font-size: 24px;
  }

  .section-title p {
    font-size: 14px;
  }

  .product-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .product-card {
    padding: 22px;
  }

  .product-name {
    font-size: 16px;
  }

  .product-price .num {
    font-size: 24px;
  }

  .solution-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .solution-item {
    padding: 20px 16px;
  }

  .solution-icon {
    font-size: 36px;
    margin-bottom: 12px;
  }

  .solution-item h4 {
    font-size: 15px;
  }

  .solution-item p {
    font-size: 12px;
  }

  .infra-stats {
    gap: 16px;
  }

  .infra-stat {
    padding: 25px 15px;
  }

  .infra-stat .num {
    font-size: 32px;
  }

  .infra-stat .label {
    font-size: 13px;
  }

  .infra-map {
    height: 200px;
  }

  .infra-map-icon {
    font-size: 100px;
  }

  .cert-grid {
    gap: 16px;
  }

  .cert-item {
    padding: 20px 15px;
  }

  .cert-icon {
    width: 50px;
    height: 50px;
    font-size: 22px;
  }

  .cert-item h5 {
    font-size: 13px;
  }

  .news-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-column {
    padding: 20px;
  }

  .sjiyun-cta {
    padding: 40px 0;
  }

  .cta-info h3 {
    font-size: 22px;
  }

  .cta-info p {
    font-size: 14px;
  }

  .cta-btns {
    justify-content: center;
  }

  .footer-top {
    padding: 40px 0 30px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 25px;
  }

  .footer-about {
    grid-column: span 2;
  }

  .footer-col h5 {
    font-size: 15px;
    margin-bottom: 15px;
  }

  .footer-col ul {
    gap: 10px;
  }

  .footer-col ul li a {
    font-size: 12px;
  }

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-record a,
  .footer-record span {
    margin: 0 5px;
    font-size: 12px;
  }

  .footer-copyright {
    font-size: 12px;
  }
}

@media (max-width: 479px) {
  .solution-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-about {
    grid-column: span 1;
  }

  .banner-title {
    font-size: 20px;
  }

  .banner-btns {
    flex-direction: column;
    gap: 10px;
  }

  .banner-btns .btn {
    width: 100%;
  }

  .cta-btns {
    flex-direction: column;
    width: 100%;
  }

  .cta-btns .btn {
    width: 100%;
  }
}