:root {
  --dc-blue: #1664ff;
  --dc-blue-dark: #0d43b7;
  --dc-title: #1d2129;
  --dc-text: #4e5969;
  --dc-muted: #86909c;
  --dc-line: #e6ebf5;
  --dc-soft: #f3f7ff;
  --dc-section: #f3f6fb;
  --dc-shadow: 0 12px 28px rgba(24, 75, 150, 0.12);
  --dc-font: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
}
.dc-page {
  width: 100%;
  margin: 0 auto;
  overflow: hidden;
  background: #ffffff;
}
.dc-frame-image {
  width: 100%;
  height: auto;
}
.dc-section {
  padding: 62px 0;
}
.dc-section__inner {
  width: min(1360px, calc(100% - 48px));
  margin: 0 auto;
}
.dc-section__inner--narrow {
  width: min(1180px, calc(100% - 48px));
}
.dc-heading {
  margin: 0 auto 34px;
  text-align: center;
}
.dc-heading__title {
  margin: 0;
  color: var(--dc-title);
  font-size: 27px;
  font-weight: 700;
  line-height: 1.4;
}
.dc-heading__subtitle {
  margin: 9px 0 0;
  color: var(--dc-muted);
  font-size: 14px;
  line-height: 24px;
}
.dc-heading__subtitle a,
.dc-selector__note a {
  color: var(--dc-blue);
}
.dc-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  min-height: 500px;
  color: #ffffff;
  background: #0a2a62 url("/img/v2026/datacenter/index/banner-bg.jpg") center / cover no-repeat;
}
.dc-hero__video {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  pointer-events: none;
}
.dc-hero__video::-webkit-media-controls {
  display: none !important;
}
.dc-hero__video::-webkit-media-controls-start-playback-button {
  display: none !important;
}
.dc-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  background: linear-gradient(180deg, rgba(7, 14, 39, 0.24), rgba(7, 14, 39, 0) 44%, rgba(7, 14, 39, 0.16)), radial-gradient(ellipse at 50% 69%, rgba(92, 191, 255, 0.08), transparent 25%);
  pointer-events: none;
}
.dc-hero::after {
  content: "";
  position: absolute;
  top: auto;
  right: 0;
  bottom: 0;
  left: 0;
  z-index: -1;
  height: 34%;
  background: linear-gradient(180deg, rgba(5, 22, 63, 0), rgba(5, 22, 63, 0.18));
  pointer-events: none;
}
.dc-hero__inner {
  position: relative;
  z-index: 1;
  width: min(940px, calc(100% - 48px));
  margin: 0 auto;
  padding-top: 74px;
  text-align: center;
}
@media (prefers-reduced-motion: reduce) {
  .dc-hero__video {
    display: none;
  }
}
.dc-hero__title {
  margin: 0;
  font-size: 42px;
  font-weight: 700;
  line-height: 58px;
  letter-spacing: 0;
  text-shadow: 0 6px 18px rgba(0, 21, 80, 0.32);
}
.dc-hero__subtitle {
  margin: 18px 0 0;
  color: rgba(255, 255, 255, 0.88);
  font-size: 18px;
  line-height: 26px;
}
.dc-hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 54px;
  width: min(760px, 100%);
  margin: 30px auto 0;
}
.dc-hero__stat strong,
.dc-hero__stat span {
  display: block;
}
.dc-hero__stat strong {
  font-size: 30px;
  font-weight: 700;
  line-height: 38px;
}
.dc-hero__stat span {
  margin-top: 2px;
  color: rgba(255, 255, 255, 0.82);
  font-size: 14px;
  line-height: 22px;
}
.dc-selector {
  padding-bottom: 54px;
}
.dc-region-tabs {
  display: flex;
  align-items: center;
  gap: 14px;
  width: min(1360px, 100%);
  margin: 0 auto 20px;
}
.dc-region-tabs__label {
  color: var(--dc-title);
  font-size: 16px;
  font-weight: 700;
  line-height: 22px;
  white-space: nowrap;
}
.dc-region-tab {
  padding: 0 0 6px;
  color: var(--dc-muted);
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  cursor: pointer;
  font-size: 16px;
  line-height: 22px;
  transition: color 0.2s, border-color 0.2s;
}
.dc-region-tab:hover {
  color: var(--dc-blue);
  border-bottom-color: var(--dc-blue);
}
.dc-region-tab--active {
  color: var(--dc-blue);
  border-bottom-color: var(--dc-blue);
  font-weight: 700;
}
.dc-selector__form {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  width: min(1360px, 100%);
  margin: 0 auto 32px;
}
.dc-select-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 14px;
  min-width: 0;
  color: var(--dc-title);
  font-size: 14px;
  line-height: 22px;
}
.dc-select-field span {
  width: auto;
  font-weight: 700;
  height: 22px;
  padding: 0;
  color: #1D2129;
  font-size: 16px;
  line-height: 22px;
  letter-spacing: normal;
  border-radius: 0;
  white-space: nowrap;
}
.dc-select-field select {
  width: 100%;
  height: 44px;
  padding: 10px;
  border: 1px solid #e5e6eb;
  border-radius: 6px;
  color: var(--dc-muted);
  appearance: none;
  background-color: #ffffff;
  background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' fill='none' stroke='%23717883' stroke-width='1.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 24px center;
  background-size: 10px 6px;
  outline: none;
  cursor: pointer;
  font-size: 14px;
}
.dc-select-field select:hover {
  border-color: #1664ff;
  background-color: #f5f8ff;
}
.dc-select-field select:not(:disabled) {
  color: var(--dc-title);
}
.dc-select-field select:focus {
  border-color: var(--dc-blue);
  box-shadow: 0 0 0 3px rgba(22, 100, 255, 0.12);
}
.dc-selector__result {
  height: clamp(410px, 42vw, 562px);
  padding: 0;
  border: 1px solid #e3e8f2;
  background: #ffffff;
  overflow: auto;
}
.dc-selector__map {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 0;
}
.dc-selector__map img {
  width: auto;
  height: auto;
  max-width: none;
  display: block;
}
.dc-selector__note {
  margin: 22px 0 0;
  color: var(--dc-muted);
  font-size: 14px;
  line-height: 24px;
  text-align: center;
}
.dc-filter-board {
  display: grid;
  grid-template-columns: 184px minmax(0, 1fr);
  height: 100%;
  min-height: 0;
  overflow: hidden;
  background: #ffffff;
}
.dc-country-list {
  display: grid;
  align-content: start;
  grid-auto-rows: minmax(38px, auto);
  gap: 8px;
  padding: 10px;
  border-right: 1px solid #edf1f7;
  background: #e7effc;
  min-height: 0;
  overflow-y: auto;
}
.dc-country-list__button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 10px;
  color: var(--dc-title);
  border: 1px solid #e7edf7;
  background: #ffffff;
  cursor: pointer;
  font-size: 14px;
  line-height: 20px;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}
.dc-country-list__button:hover {
  color: var(--dc-blue);
  border-color: var(--dc-blue);
  background: #ffffff;
}
.dc-country-list__button--active {
  color: #ffffff;
  border-color: var(--dc-blue);
  background: var(--dc-blue);
}
.dc-products {
  min-height: 0;
  padding: 28px 26px 22px;
  overflow-y: auto;
}
.dc-products__empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  color: var(--dc-muted);
  font-size: 15px;
}
.dc-products__title {
  margin: 0 0 20px;
  color: var(--dc-title);
  font-size: 18px;
  font-weight: 700;
  line-height: 28px;
}
.dc-product-group + .dc-product-group {
  margin-top: 16px;
}
.dc-product-group__title {
  margin: 0 0 12px;
  color: var(--dc-title);
  font-size: 15px;
  font-weight: 700;
  line-height: 24px;
}
.dc-product-group__items {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}
.dc-product-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  padding: 8px 12px;
  color: var(--dc-title);
  border: 1px solid #dde5f0;
  background: #ffffff;
  box-shadow: 0 4px 12px rgba(16, 44, 92, 0.08);
  font-size: 16px;
  line-height: 20px;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s, background 0.2s, box-shadow 0.2s;
}
.dc-product-chip:hover {
  color: var(--dc-blue);
  border-color: var(--dc-blue);
  background: #f0f5ff;
  box-shadow: 0 4px 16px rgba(22, 100, 255, 0.16);
}
.dc-services {
  padding: 66px 0 74px;
  background: var(--dc-section);
}
.dc-services__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding: 8px 0 24px;
}
.dc-service-card {
  min-height: 246px;
  padding: 34px 34px 30px;
  color: var(--dc-title);
  border-radius: 8px;
  background: #ffffff;
  box-shadow: var(--dc-shadow);
  transform: translateY(0);
  transition: color 0.22s ease, background 0.22s ease, box-shadow 0.22s ease, transform 0.22s ease;
}
.dc-service-card p {
  min-height: 72px;
}
.dc-service-card:hover,
.dc-service-card:focus-within {
  color: #ffffff;
  background: linear-gradient(135deg, #2f73f6, #145edc);
  box-shadow: 0 18px 36px rgba(18, 86, 210, 0.24);
  transform: translateY(-6px);
}
/* 触摸设备禁用 hover 变换效果，但保留 focus-within 可访问性 */
@media (hover: none) {
  .dc-service-card:hover {
    color: var(--dc-title);
    background: #ffffff;
    box-shadow: var(--dc-shadow);
    transform: translateY(0);
  }
  .dc-service-card:hover .dc-service-card__icon {
    filter: none;
    transform: scale(1);
  }
  .dc-service-card:hover p {
    color: var(--dc-text);
  }
  .dc-service-card:hover a {
    color: var(--dc-title);
    border-color: #e2e8f2;
    background: #ffffff;
  }
}
.dc-service-card__icon {
  width: 48px;
  height: 48px;
  object-fit: contain;
  transition: filter 0.22s ease, transform 0.22s ease;
}
.dc-service-card:hover .dc-service-card__icon,
.dc-service-card:focus-within .dc-service-card__icon {
  filter: drop-shadow(0 8px 16px rgba(4, 27, 79, 0.18));
  transform: scale(1.04);
}
.dc-service-card h3 {
  margin: 22px 0 9px;
  font-size: 20px;
  font-weight: 700;
  line-height: 28px;
}
.dc-service-card p {
  margin: 0;
  color: var(--dc-text);
  font-size: 14px;
  line-height: 24px;
  transition: color 0.22s ease;
}
.dc-service-card:hover p,
.dc-service-card:focus-within p {
  color: rgba(255, 255, 255, 0.86);
}
.dc-service-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 88px;
  min-height: 34px;
  margin-top: 24px;
  padding: 0 18px;
  color: var(--dc-title);
  border: 1px solid #e2e8f2;
  border-radius: 4px;
  background: #ffffff;
  font-size: 13px;
  line-height: 20px;
  transition: color 0.22s ease, border-color 0.22s ease, background 0.22s ease;
}
.dc-service-card:hover a,
.dc-service-card:focus-within a {
  color: var(--dc-blue);
  border-color: #ffffff;
}
.dc-service-card a:hover,
.dc-service-card a:focus {
  color: var(--dc-blue-dark);
  outline: none;
}
.dc-standards {
  padding: 72px 0 82px;
}
.dc-standards__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  border: 1px solid #e7ebf2;
  background: #ffffff;
  box-shadow: 0 10px 26px rgba(28, 60, 112, 0.08);
}
.dc-standard-media,
.dc-standard-text {
  height: 380px;
  min-height: 304px;
  margin: 0;
}
.dc-standard-media {
  overflow: hidden;
}
.dc-standard-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.dc-standard-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 44px 76px;
  text-align: center;
}
.dc-standard-text h3 {
  margin: 0 0 22px;
  color: var(--dc-title);
  font-size: 22px;
  font-weight: 500;
  line-height: 32px;
}
.dc-standard-text p {
  max-width: 443px;
  margin: 0;
  color: #4E5969;
  font-size: 16px;
  line-height: 28px;
}
@media (max-width: 1280px) {
  .dc-section {
    padding: 48px 0;
  }
  .dc-heading__title {
    font-size: 24px;
  }
  .dc-services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .dc-product-group__items {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .dc-standard-text {
    padding: 38px 44px;
  }
}
@media (min-width: 1300px) {
  .dc-standard-text p {
    max-width: 560px;
  }
}
@media (max-width: 1024px) {
  .dc-hero__title {
    font-size: 34px;
    line-height: 46px;
  }
  .dc-hero__stats {
    gap: 22px;
  }
  .dc-selector__form {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .dc-filter-board {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(0, 154px) minmax(0, 1fr);
  }
  .dc-country-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: 10px;
    border-right: 0;
    border-bottom: 1px solid #edf1f7;
  }
  .dc-product-group__items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .dc-standards__grid {
    grid-template-columns: 1fr;
  }
  .dc-standards__grid > :nth-child(3) {
    order: 2;
  }
  .dc-standards__grid > :nth-child(4) {
    order: 1;
  }
  .dc-standard-media,
  .dc-standard-text {
    height: auto;
    min-height: auto;
  }
  .dc-standard-media {
    max-height: 360px;
  }
  .dc-standard-text {
    padding: 36px 32px;
  }
  .dc-standard-text p {
    max-width: 480px;
  }
  .dc-section {
    padding: 40px 0;
  }
  .dc-section__inner,
  .dc-section__inner--narrow {
    width: min(60%, 900px);
  }
}
@media (max-width: 768px) {
  .dc-page {
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
  }
  .dc-section {
    padding: 44px 0;
  }
  .dc-section__inner,
  .dc-section__inner--narrow {
    width: min(calc(100% - 28px - env(safe-area-inset-left, 0px) - env(safe-area-inset-right, 0px)), 560px);
    padding-left: env(safe-area-inset-left, 0);
    padding-right: env(safe-area-inset-right, 0);
  }
  .dc-heading {
    margin-bottom: 24px;
  }
  .dc-heading__title {
    font-size: 22px;
    line-height: 32px;
  }
  .dc-heading__subtitle {
    margin-top: 6px;
    font-size: 13px;
    line-height: 22px;
  }
  .dc-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 380px;
    background-position: center bottom;
  }
  .dc-hero__inner {
    width: calc(100% - 32px);
    padding: 0;
  }
  .dc-hero__title {
    height: 24px;
    font-size: 20px;
    line-height: 24px;
    color: #FFFFFF;
  }
  .dc-hero__subtitle {
    margin-top: 12px;
    font-size: 13px;
    line-height: 22px;
  }
  .dc-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px 8px;
    margin-top: 22px;
  }
  .dc-hero__stat strong {
    font-size: 24px;
    line-height: 32px;
  }
  .dc-hero__stat span {
    font-size: 13px;
    line-height: 20px;
  }
  .dc-selector {
    padding-top: 32px;
    padding-bottom: 36px;
  }
  .dc-selector__form {
    gap: 12px;
    margin-bottom: 20px;
  }
  .dc-selector__note {
    margin-top: 14px;
    font-size: 13px;
    line-height: 22px;
  }
  .dc-select-field {
    grid-template-columns: 1fr;
    gap: 8px;
  }
  .dc-selector__result {
    height: auto;
    min-height: 0;
    padding: 0;
  }
  .dc-selector__result:has(.dc-filter-board) {
    max-height: 400px;
    overflow-y: auto;
  }
  .dc-selector__map {
    height: auto;
    min-height: 0;
    padding: 15px;
  }
  .dc-selector__map img {
    max-width: 100%;
  }
  .dc-country-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .dc-filter-board {
    grid-template-rows: auto auto;
  }
  .dc-products {
    padding: 22px 12px 18px;
    overflow-y: visible;
  }
  .dc-products__empty {
    min-height: 100%;
  }
  .dc-product-group__items,
  .dc-services__grid {
    grid-template-columns: 1fr;
  }
  .dc-service-card {
    min-height: auto;
    padding: 24px 22px;
  }
  .dc-service-card h3 {
    margin-top: 16px;
    font-size: 18px;
    line-height: 26px;
  }
  .dc-service-card p {
    font-size: 13px;
    line-height: 22px;
  }
  .dc-service-card a {
    margin-top: 18px;
    min-height: 36px;
    font-size: 13px;
  }
  .dc-service-card__icon {
    width: 40px;
    height: 40px;
  }
  .dc-standard-media,
  .dc-standard-media img {
    height: auto;
    min-height: 220px;
    max-height: 340px;
  }
  .dc-standard-text {
    height: auto;
    min-height: auto;
    padding: 32px 24px;
  }
  .dc-standard-text h3 {
    margin-bottom: 14px;
    font-size: 19px;
    line-height: 28px;
  }
  .dc-standard-text p {
    font-size: 14px;
    line-height: 24px;
    max-width: 100%;
  }
}
@media (max-width: 420px) {
  .dc-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 230px;
  }
  .dc-hero__inner {
    padding: 0;
  }
  .dc-hero__title {
    font-size: 20px;
    line-height: 24px;
  }
  .dc-hero__subtitle {
    margin: 12px 0px;
    font-size: 14px;
    line-height: 17px;
  }
  .dc-hero__stats {
    gap: 8px 6px;
    margin-top: 12px;
  }
  .dc-hero__stat strong {
    font-size: 18px;
    line-height: 24px;
  }
  .dc-hero__stat span {
    font-size: 12px;
    line-height: 15px;
  }
  .dc-service-card {
    padding: 20px 18px;
  }
  .dc-service-card h3 {
    font-size: 17px;
    line-height: 24px;
  }
  .dc-standard-text {
    padding: 24px 16px;
  }
  .dc-standard-text h3 {
    font-size: 17px;
    line-height: 26px;
    margin-bottom: 10px;
  }
  .dc-standard-text p {
    font-size: 13px;
    line-height: 22px;
  }
  .dc-country-list {
    grid-template-columns: 1fr;
  }
  .dc-product-chip {
    justify-content: flex-start;
    text-align: left;
  }
}