:root {
  --navy: #092a4d;
  --navy2: #123f6d;
  --blue: #1677ff;
  --sky: #eef5fc;
  --ink: #0b2b4b;
  --muted: #63758a;
  --line: #dbe6f1;
  --white: #fff;
  --shadow: 0 14px 40px rgba(9, 42, 77, 0.09);
  --radius: 18px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: var(--ink);
  background: #f5f8fc;
  line-height: 1.75;
}
a {
  text-decoration: none;
  color: inherit;
}
img {
  max-width: 100%;
  display: block;
}
.container {
  width: min(1180px, calc(100% - 40px));
  margin: auto;
}
.site-header {
  height: 82px;
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 270px;
}
.brand img {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  object-fit: cover;
}
.brand strong {
  font-size: 21px;
}
.brand small {
  display: block;
  color: #bcd1e6;
  font-size: 12px;
}
.nav {
  display: flex;
  align-self: stretch;
  flex: 1;
}
.nav a {
  padding: 0 18px;
  display: flex;
  align-items: center;
  font-weight: 700;
  white-space: nowrap;
  position: relative;
}
.nav a:hover,
.nav a.active {
  background: rgba(255, 255, 255, 0.06);
}
.nav a.active:after {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 0;
  height: 3px;
  background: #58a9ff;
  border-radius: 3px;
}
.hotline {
  text-align: right;
  white-space: nowrap;
}
.hotline small {
  display: block;
  color: #bcd1e6;
}
.hotline b {
  color: #ffd34e;
  font-size: 20px;
}
.menu-btn {
  display: none;
  background: none;
  border: 0;
  color: #fff;
  font-size: 28px;
}
.hero {
  background: linear-gradient(120deg, var(--navy), #174f82);
  color: #fff;
  padding: 62px 0 58px;
  position: relative;
  overflow: hidden;
}
.hero:after,
.hero:before {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
}
.hero:after {
  width: 320px;
  height: 320px;
  right: 8%;
  top: -140px;
}
.hero:before {
  width: 190px;
  height: 190px;
  right: 18%;
  bottom: -130px;
}
.hero .eyebrow {
  letter-spacing: 4px;
  color: #66b6ff;
  font-weight: 800;
  font-size: 14px;
}
.hero h1 {
  font-size: 46px;
  margin: 10px 0 8px;
  line-height: 1.25;
}
.hero p {
  font-size: 18px;
  color: #d9e8f7;
  margin: 0;
  max-width: 760px;
}
.breadcrumbs {
  padding: 22px 0;
  color: #6c7d90;
  font-size: 14px;
}
.breadcrumbs a {
  color: #1677ff;
}
.section {
  padding: 28px 0 70px;
}
.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  margin-bottom: 24px;
}
.section-head h2 {
  font-size: 30px;
  margin: 0;
}
.section-head p {
  margin: 6px 0 0;
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: 0.25s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 50px rgba(9, 42, 77, 0.14);
}
.card-media {
  aspect-ratio: 16/10;
  background: #dfeaf5;
  overflow: hidden;
}
.card-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.card-body {
  padding: 22px;
}
.card h3 {
  font-size: 20px;
  line-height: 1.45;
  margin: 0 0 10px;
}
.card p {
  color: var(--muted);
  margin: 0;
  font-size: 15px;
}
.meta {
  font-size: 13px;
  color: #8a98a8;
  margin-top: 14px;
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 26px;
  min-height: 170px;
  box-shadow: var(--shadow);
}
.service-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: #eaf4ff;
  display: grid;
  place-items: center;
  font-size: 25px;
  margin-bottom: 18px;
}
.service-card h3 {
  margin: 0 0 8px;
  font-size: 20px;
}
.service-card p {
  margin: 0;
  color: var(--muted);
}
.article-wrap {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 28px;
  align-items: start;
}
.article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 42px;
  box-shadow: var(--shadow);
}
.article-head {
  text-align: center;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.article-head h1 {
  font-size: 34px;
  line-height: 1.4;
  margin: 0 0 12px;
}
.article-head .meta {
  margin: 0;
}
.article-content {
  font-size: 17px;
  color: #263e56;
}
.article-content h2 {
  font-size: 25px;
  margin-top: 34px;
  border-left: 4px solid var(--blue);
  padding-left: 12px;
}
.article-content h3 {
  font-size: 21px;
  margin-top: 28px;
}
.article-content p {
  margin: 15px 0;
}
.article-content img {
  margin: 24px auto;
  border-radius: 14px;
}
.article-content table {
  width: 100%;
  border-collapse: collapse;
  display: block;
  overflow: auto;
}
.article-content td,
.article-content th {
  border: 1px solid #d9e3ed;
  padding: 10px;
}
.sidebar {
  position: sticky;
  top: 105px;
}
.side-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 18px;
  box-shadow: var(--shadow);
}
.side-card h3 {
  margin-top: 0;
}
.side-card a {
  display: block;
  padding: 9px 0;
  border-bottom: 1px dashed #dce5ed;
}
.cta {
  background: linear-gradient(135deg, #0c3f70, #1677ff);
  color: #fff;
}
.cta p {
  color: #dceeff;
}
.phone {
  display: block;
  margin-top: 28px;
  text-align: center;
  color: #fff;
  font-size: 25px;
  font-weight: 700;
  letter-spacing: 1px;
  text-decoration: none;
  white-space: nowrap;
}

.phone:hover {
  color: #ffe08a;
}

.phone-tip {
  margin-top: 8px;
  text-align: center;
  color: rgba(255, 255, 255, 0.75);
  font-size: 14px;
}

.home-hero {
  background: #082a4e;
  color: #fff;
}
.slider {
  position: relative;
  height: 520px;
  overflow: hidden;
}
.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: 0.7s;
  display: flex;
  align-items: center;
  background-size: cover;
  background-position: center;
}
.slide.active {
  opacity: 1;
}
.slide:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(3, 27, 52, 0.92),
    rgba(3, 27, 52, 0.58),
    rgba(3, 27, 52, 0.25)
  );
}
.slide-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
}
.slide h1 {
  font-size: 48px;
  line-height: 1.25;
  margin: 12px 0;
}
.slide p {
  font-size: 19px;
  color: #d9e8f7;
}
.slide-tag {
  color: #ffc950;
  font-weight: 800;
  letter-spacing: 3px;
}
.slider-dots {
  position: absolute;
  z-index: 3;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
}
.slider-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: 0;
  background: rgba(255, 255, 255, 0.5);
}
.slider-dots button.active {
  background: #fff;
  width: 28px;
  border-radius: 8px;
}
.slider-arrow {
  position: absolute;
  z-index: 3;
  top: 50%;
  transform: translateY(-50%);
  border: 0;
  background: rgba(0, 0, 0, 0.25);
  color: #fff;
  width: 46px;
  height: 60px;
  font-size: 28px;
}
.slider-arrow.prev {
  left: 0;
}
.slider-arrow.next {
  right: 0;
}
.kb-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.kb-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 24px;
}
.kb-item h3 {
  margin: 0 0 8px;
}
.kb-item p {
  margin: 0;
  color: var(--muted);
}
.site-footer {
  background: #082947;
  color: #d9e6f2;
  padding: 54px 0 20px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.1fr;
  gap: 40px;
}
.site-footer h3 {
  color: #fff;
  margin-top: 0;
}
.site-footer a {
  display: block;
  color: #d9e6f2;
  padding: 5px 0;
}
.copyright {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  margin-top: 18px;
  margin-bottom: -18px;
  padding: 12px 0;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  color: #9fb5c9;
  line-height: 1;
}
.copyright .divider {
  color: rgba(255, 255, 255, 0.3);
}
.beian-link {
  color: #9fb5c9;
  text-decoration: none;
  transition: 0.25s;
}
.beian-link:hover {
  color: #ffffff;
  text-decoration: underline;
}
.float-phone {
  position: fixed;
  right: 24px;
  bottom: 24px;
  background: #1677ff;
  color: #fff;
  padding: 14px 20px;
  border-radius: 999px;
  font-weight: 700;
  box-shadow: 0 10px 30px rgba(22, 119, 255, 0.35);
  z-index: 60;
}
.empty {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 40px;
  text-align: center;
  color: var(--muted);
}
@media (max-width: 1050px) {
  .hotline {
    display: none;
  }
  .brand {
    min-width: 230px;
  }
  .nav a {
    padding: 0 11px;
  }
  .grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 780px) {
  .site-header {
    height: 70px;
  }
  .header-inner {
    justify-content: space-between;
  }
  .brand {
    min-width: 0;
  }
  .brand strong {
    font-size: 17px;
  }
  .brand small {
    display: none;
  }
  .nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 70px;
    background: #082947;
    flex-direction: column;
    height: auto;
  }
  .nav.open {
    display: flex;
  }
  .nav a {
    height: 52px;
  }
  .menu-btn {
    display: block;
  }
  .hero {
    padding: 42px 0;
  }
  .hero h1 {
    font-size: 35px;
  }
  .grid,
  .grid-2,
  .service-grid,
  .kb-list {
    grid-template-columns: 1fr;
  }
  .article-wrap {
    grid-template-columns: 1fr;
  }
  .article {
    padding: 24px;
  }
  .article-head h1 {
    font-size: 27px;
  }
  .sidebar {
    position: static;
  }
  .slider {
    height: 480px;
  }
  .slide h1 {
    font-size: 37px;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .container {
    width: min(100% - 28px, 1180px);
  }
}
@media (max-width: 480px) {
  .brand img {
    width: 44px;
    height: 44px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .slider {
    height: 450px;
  }
  .slide h1 {
    font-size: 31px;
  }
  .card-body {
    padding: 18px;
  }
  .float-phone {
    right: 14px;
    bottom: 14px;
  }
}

/* V11.1 新闻与案例自动分页 */
.list-summary {
  margin: -10px 0 20px;
  color: var(--muted);
  font-size: 14px;
}
[data-pagination-list] > .card[hidden] {
  display: none !important;
}
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 34px 0 0;
  padding: 6px 0;
}
.pagination button {
  min-width: 42px;
  height: 42px;
  padding: 0 13px;
  border: 1px solid #d4e0ec;
  border-radius: 9px;
  background: #fff;
  color: #31516e;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.2s;
  box-shadow: 0 4px 14px rgba(9, 42, 77, 0.05);
}
.pagination button:hover:not(:disabled) {
  border-color: var(--blue);
  color: var(--blue);
  transform: translateY(-1px);
}
.pagination button.active {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  box-shadow: 0 8px 20px rgba(22, 119, 255, 0.22);
}
.pagination button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
  background: #f2f5f8;
  box-shadow: none;
}
.pagination .page-dots {
  display: grid;
  place-items: center;
  min-width: 30px;
  height: 42px;
  color: #8292a3;
}
.pagination-status {
  width: 100%;
  text-align: center;
  margin-top: 8px;
  color: #7b8b9c;
  font-size: 13px;
}
@media (max-width: 600px) {
  .pagination {
    gap: 5px;
  }
  .pagination button {
    min-width: 36px;
    height: 38px;
    padding: 0 9px;
    font-size: 13px;
  }
  .pagination .pager-label {
    display: none;
  }
}

/* V11.2 关于我们与联系我们 */
.section-kicker {
  display: block;
  color: #2d8dff;
  font-weight: 800;
  letter-spacing: 2px;
  font-size: 13px;
  margin-bottom: 8px;
}
.section-kicker.orange {
  color: #f28a24;
}
.about-page,
.contact-page {
  padding-top: 12px;
}
.about-intro {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(280px, 0.7fr);
  gap: 28px;
  align-items: stretch;
  margin-bottom: 54px;
}
.about-intro > div {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 38px;
  box-shadow: var(--shadow);
}
.about-intro h2,
.about-panel h2,
.contact-card h2,
.contact-notice h2 {
  font-size: 31px;
  margin: 0 0 18px;
}
.about-intro p {
  color: #334f69;
  margin: 14px 0;
}
.about-highlight {
  background: linear-gradient(155deg, #0a365c, #126c8a) !important;
  color: #fff !important;
}
.about-highlight p {
  color: #d7edf2 !important;
}
.about-highlight hr {
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  margin: 25px 0;
}
.big-number {
  font-size: 45px;
  font-weight: 900;
  color: #fff;
  line-height: 1;
}
.about-highlight strong {
  font-size: 18px;
  display: block;
  margin: 8px 0;
}
.advantage-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 54px;
}
.advantage-grid article {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 26px;
  box-shadow: var(--shadow);
}
.advantage-grid article > span {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: #e9f4ff;
  color: #1677ff;
  font-weight: 900;
}
.advantage-grid h3 {
  font-size: 20px;
  margin: 16px 0 8px;
}
.advantage-grid p {
  margin: 0;
  color: var(--muted);
}
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 42px;
}
.about-panel {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 34px;
  box-shadow: var(--shadow);
}
.check-list {
  padding: 0;
  margin: 20px 0 0;
  list-style: none;
}
.check-list li {
  padding: 8px 0 8px 28px;
  position: relative;
  border-bottom: 1px dashed #dce6ef;
}
.check-list li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #1cb67a;
  font-weight: 900;
}
.scope-item {
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.scope-item b {
  font-size: 18px;
}
.scope-item p {
  margin: 5px 0 0;
  color: var(--muted);
}
.about-cta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 25px;
  background: linear-gradient(135deg, #0b365e, #0b7581);
  color: #fff;
  border-radius: 22px;
  padding: 34px 38px;
  box-shadow: var(--shadow);
}
.about-cta h2 {
  margin: 0 0 8px;
  font-size: 30px;
}
.about-cta p {
  margin: 0;
  color: #d8edf4;
}
.about-cta .btn {
  white-space: nowrap;
  background: #fff;
  color: #0b4e6f;
}
.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(300px, 0.7fr);
  gap: 28px;
}
.contact-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 38px;
  box-shadow: var(--shadow);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 28px;
}
.contact-item {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 22px;
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 122px;
  background: #fff;
}
.contact-item:hover {
  border-color: #8bc4ff;
  transform: translateY(-2px);
}
.contact-icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  background: #eaf2f5;
  color: #0c6a80;
  display: grid;
  place-items: center;
  font-size: 26px;
  flex: none;
}
.contact-item small {
  display: block;
  color: #f28a24;
  font-weight: 800;
  margin-bottom: 4px;
}
.contact-item strong {
  font-size: 21px;
  line-height: 1.4;
}
.wechat-card {
  text-align: center;
}
.wechat-card p {
  color: var(--muted);
}
.wechat-card img {
  width: 230px;
  height: 230px;
  object-fit: cover;
  margin: 24px auto 10px;
  border-radius: 10px;
}
.wechat-card > small {
  color: var(--muted);
}
.response-flow {
  margin-top: 28px;
  background: #075061;
  color: #fff;
  border-radius: 22px;
  padding: 30px 36px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 0;
  box-shadow: var(--shadow);
}
.flow-title {
  padding-right: 28px;
}
.flow-title h2 {
  font-size: 27px;
  line-height: 1.35;
  margin: 6px 0 0;
}
.flow-step {
  padding: 3px 24px;
  border-left: 1px solid rgba(255, 255, 255, 0.18);
}
.flow-step span {
  color: #ff9b2e;
  font-weight: 900;
}
.flow-step h3 {
  margin: 10px 0 6px;
}
.flow-step p {
  margin: 0;
  color: #bdd8df;
  font-size: 14px;
}
.contact-notice {
  margin-top: 28px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 34px;
  box-shadow: var(--shadow);
}
.notice-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.notice-grid > div {
  background: #f5f9fc;
  border-radius: 14px;
  padding: 20px;
}
.notice-grid b {
  font-size: 17px;
}
.notice-grid p {
  margin: 6px 0 0;
  color: var(--muted);
}
@media (max-width: 900px) {
  .about-intro,
  .about-split,
  .contact-layout {
    grid-template-columns: 1fr;
  }
  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .response-flow {
    grid-template-columns: 1fr 1fr;
  }
  .flow-title {
    grid-column: 1/-1;
    padding-bottom: 20px;
  }
  .flow-step:nth-of-type(2) {
    border-left: 0;
  }
  .notice-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 600px) {
  .advantage-grid,
  .contact-grid,
  .response-flow {
    grid-template-columns: 1fr;
  }
  .about-intro > div,
  .about-panel,
  .contact-card {
    padding: 24px;
  }
  .flow-step {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.18);
    padding: 18px 0;
  }
  .about-cta {
    align-items: flex-start;
    flex-direction: column;
    padding: 28px;
  }
  .wechat-card img {
    width: 210px;
    height: 210px;
  }
}

/* V11.3 数据驱动分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 34px;
}
.pagination button {
  min-width: 42px;
  height: 42px;
  padding: 0 14px;
  border: 1px solid #d8e2ee;
  background: #fff;
  color: #143354;
  border-radius: 9px;
  font: inherit;
  cursor: pointer;
  transition: 0.2s;
}
.pagination button:hover:not(:disabled),
.pagination button.active {
  background: #1677e8;
  color: #fff;
  border-color: #1677e8;
}
.pagination button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}
.pagination-status {
  margin-left: 8px;
  color: #718096;
  font-size: 14px;
}
@media (max-width: 640px) {
  .pagination button {
    min-width: 36px;
    height: 38px;
    padding: 0 9px;
  }
  .pagination-status {
    width: 100%;
    text-align: center;
    margin: 5px 0 0;
  }
}

/* ==============================
   为什么选择我们
============================== */
.why-section {
  padding: 78px 0 84px;
  background:
    radial-gradient(circle at 50% 0, rgba(22, 119, 255, 0.05), transparent 36%),
    #f6f8fb;
}

.why-title {
  margin-bottom: 46px;
  text-align: center;
}

.why-title > span {
  display: block;
  margin-bottom: 10px;
  color: #ee922c;
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 1.8px;
}

.why-title h2 {
  margin: 0;
  color: #263f57;
  font-size: 34px;
  line-height: 1.35;
}

.why-title p {
  margin: 16px 0 0;
  color: #8193a7;
  font-size: 16px;
}

.title-decoration {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  margin-top: 18px;
}

.title-decoration i {
  display: block;
  width: 42px;
  height: 2px;
  background: #0f6d88;
  border-radius: 10px;
}

.title-decoration b {
  width: 9px;
  height: 9px;
  background: #ed922f;
  border-radius: 50%;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px 24px;
  max-width: 1180px;
  margin: 0 auto;
}

.why-card {
  position: relative;
  min-height: 210px;
  padding: 34px 36px 30px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #e2e8ef;
  border-radius: 14px;
  box-shadow: 0 8px 26px rgba(39, 65, 91, 0.05);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease,
    border-color 0.25s ease;
}

.why-card:hover {
  transform: translateY(-5px);
  border-color: #b9d4e3;
  box-shadow: 0 16px 36px rgba(39, 65, 91, 0.1);
}

.why-card-top {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  min-height: 58px;
}

.why-icon {
  display: flex;
  flex: 0 0 54px;
  align-items: center;
  justify-content: center;
  width: 54px;
  height: 54px;
  margin-right: 18px;
  color: #08718c;
  background: #f2f8fb;
  border-radius: 9px;
  font-size: 25px;
  font-weight: 800;
}

.why-card:nth-child(3) .why-icon {
  color: #fff;
  background: linear-gradient(135deg, #087a96, #075f78);
}

.why-name {
  position: relative;
  z-index: 2;
}

.why-name h3 {
  margin: 0 0 4px;
  color: #263f57;
  font-size: 21px;
  line-height: 1.3;
}

.why-name span {
  color: #2690b5;
  font-size: 14px;
}

.why-number {
  position: absolute;
  top: -19px;
  right: -6px;
  z-index: 1;
  color: rgba(40, 67, 91, 0.045);
  font-size: 72px;
  font-weight: 500;
  line-height: 1;
  pointer-events: none;
}

.why-card > p {
  position: relative;
  z-index: 2;
  margin: 21px 0 0;
  color: #718397;
  font-size: 15px;
  line-height: 2;
}

/* ==============================
   全国城市分站
============================== */
.city-section {
  padding: 68px 0 78px;
  background: #fff;
}

.city-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 30px;
  margin-bottom: 32px;
}

.city-heading span {
  display: block;
  margin-bottom: 8px;
  color: #ec922f;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 1.5px;
}

.city-heading h2 {
  margin: 0;
  color: #263f57;
  font-size: 31px;
  line-height: 1.4;
}

.city-heading p {
  margin: 9px 0 0;
  color: #8193a7;
  font-size: 15px;
}

.city-contact {
  display: flex;
  flex-direction: column;
  flex: 0 0 auto;
  justify-content: center;
  min-width: 225px;
  min-height: 72px;
  padding: 12px 23px;
  color: #fff;
  text-decoration: none;
  background: linear-gradient(135deg, #08738e, #07576f);
  border-radius: 12px;
  box-shadow: 0 10px 25px rgba(5, 103, 130, 0.18);
  transition:
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.city-contact:hover {
  color: #fff;
  transform: translateY(-3px);
  box-shadow: 0 14px 30px rgba(5, 103, 130, 0.25);
}

.city-contact small {
  margin-bottom: 2px;
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
}

.city-contact strong {
  font-size: 20px;
  letter-spacing: 0.5px;
}

.city-list {
  display: grid;
  grid-template-columns: repeat(8, minmax(0, 1fr));
  gap: 12px;
  padding: 24px;
  background: #f5f8fb;
  border: 1px solid #e3eaf1;
  border-radius: 15px;
}

.city-list a {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 10px 6px;
  overflow: hidden;
  color: #476178;
  font-size: 15px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  background: #fff;
  border: 1px solid #e5ebf1;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(52, 76, 98, 0.03);
  transition:
    color 0.25s ease,
    background 0.25s ease,
    border-color 0.25s ease,
    transform 0.25s ease,
    box-shadow 0.25s ease;
}

.city-list a::before {
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: #ed922f;
  content: "";
  transform: translateX(-50%);
  transition: width 0.25s ease;
}

.city-list a:hover {
  color: #08738e;
  background: #fff;
  border-color: #b7d3df;
  transform: translateY(-3px);
  box-shadow: 0 9px 20px rgba(52, 76, 98, 0.09);
}

.city-list a:hover::before {
  width: 45%;
}

/* ==============================
   响应式
============================== */
@media (max-width: 1100px) {
  .city-list {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

@media (max-width: 900px) {
  .why-section {
    padding: 58px 0 64px;
  }

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

  .city-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .why-title h2,
  .city-heading h2 {
    font-size: 26px;
  }

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

  .why-card {
    min-height: auto;
    padding: 25px 22px;
  }

  .why-number {
    top: -10px;
    right: -4px;
    font-size: 58px;
  }

  .why-card > p {
    font-size: 14px;
    line-height: 1.85;
  }

  .city-heading {
    display: block;
  }

  .city-contact {
    width: 100%;
    min-width: 0;
    margin-top: 22px;
  }

  .city-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 9px;
    padding: 15px;
  }

  .city-list a {
    min-height: 45px;
    font-size: 14px;
  }
}

@media (max-width: 420px) {
  .city-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}