:root {
  --blue: #0876b9;
  --blue-dark: #075c91;
  --ink: #282828;
  --muted: #666;
  --line: #e6e6e6;
  --soft: #f5f6f7;
  --white: #fff;
  --content: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--white);
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button,
input,
textarea {
  font: inherit;
}

.container {
  width: min(var(--content), calc(100% - 40px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 30;
  top: 0;
  border-bottom: 1px solid #ededed;
  background: rgba(255, 255, 255, 0.98);
}

.header-inner {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.brand {
  display: flex;
  min-width: 315px;
  align-items: center;
  gap: 10px;
  font-size: 20px;
  color: #555;
  white-space: nowrap;
}

.brand img {
  width: 42px;
  height: 42px;
  object-fit: cover;
  object-position: left center;
}

.main-nav {
  display: flex;
  align-items: stretch;
  gap: 2px;
}

.main-nav a {
  position: relative;
  display: flex;
  min-height: 78px;
  align-items: center;
  padding: 0 17px;
  color: #555;
  font-size: 16px;
  white-space: nowrap;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--blue);
}

.main-nav a.active::after {
  position: absolute;
  right: 17px;
  bottom: 17px;
  left: 17px;
  height: 3px;
  background: var(--blue);
  content: "";
}

.menu-button {
  display: none;
  width: 42px;
  height: 42px;
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.menu-button span,
.menu-button::before,
.menu-button::after {
  display: block;
  width: 24px;
  height: 2px;
  margin: 5px auto;
  background: currentColor;
  content: "";
}

.hero {
  position: relative;
  overflow: hidden;
  background: #0b79ba;
}

.hero img {
  width: 100%;
  min-height: 420px;
  max-height: 670px;
  object-fit: cover;
  object-position: center;
}

.section {
  padding: 82px 0;
}

.section-soft {
  background: var(--soft);
}

.section-title {
  margin: 0 0 12px;
  color: #2b2b2b;
  font-family: Georgia, "Microsoft YaHei", serif;
  font-size: 34px;
  font-weight: 500;
  line-height: 1.25;
  text-align: center;
}

.section-title-en {
  display: block;
  margin-bottom: 8px;
  color: #353535;
  font-family: Georgia, serif;
  font-size: 19px;
  font-weight: 700;
}

.section-subtitle {
  max-width: 760px;
  margin: 0 auto 44px;
  color: var(--muted);
  text-align: center;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 34px;
  max-width: 920px;
  margin: 0 auto;
}

.service-card {
  position: relative;
  overflow: hidden;
  border: 1px solid #e4e4e4;
  background: #f1f1f1;
}

.service-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  transition: transform 300ms ease;
}

.service-card:hover img {
  transform: scale(1.025);
}

.service-card-body {
  min-height: 170px;
  padding: 24px 30px 30px;
  text-align: center;
}

.service-number {
  margin: 0;
  font-family: Georgia, serif;
  font-size: 46px;
  font-weight: 700;
  line-height: 1;
}

.service-card h3 {
  margin: 18px 0 6px;
  font-size: 18px;
  font-weight: 500;
}

.service-tag {
  position: absolute;
  top: 0;
  left: 0;
  padding: 7px 12px;
  background: var(--blue);
  color: var(--white);
  font-size: 14px;
  line-height: 1.35;
}

.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  align-items: center;
  gap: 58px;
}

.split-image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.eyebrow {
  margin: 0 0 4px;
  color: #555;
  font-size: 20px;
}

.split h2 {
  margin: 0 0 22px;
  font-size: 28px;
  line-height: 1.45;
}

.split p {
  margin: 0 0 16px;
  color: var(--muted);
}

.feature-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin-top: 34px;
  background: #333;
}

.feature-bar span {
  padding: 18px 12px;
  border-right: 1px solid #777;
  color: var(--white);
  text-align: center;
}

.feature-bar span:first-child {
  background: var(--blue);
}

.feature-bar span:last-child {
  border-right: 0;
}

.cta-line {
  padding: 48px 20px;
  text-align: center;
}

.cta-line h2 {
  margin: 0 0 8px;
  font-size: 25px;
  font-weight: 500;
}

.cta-line p {
  margin: 0 0 18px;
  color: #555;
}

.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid #333;
  border-radius: 2px;
  padding: 0 28px;
  background: #333;
  color: var(--white);
  cursor: pointer;
}

.button:hover {
  border-color: var(--blue);
  background: var(--blue);
}

.button-blue {
  border-color: var(--blue);
  background: var(--blue);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 46px;
}

.news-column {
  border-top: 3px solid var(--blue);
  padding-top: 20px;
}

.news-column h3 {
  margin: 0 0 18px;
  font-family: Georgia, "Microsoft YaHei", serif;
  font-size: 21px;
  line-height: 1.35;
}

.news-column a {
  display: block;
  overflow: hidden;
  padding: 8px 0;
  color: #606060;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.news-column a:hover {
  color: var(--blue);
}

.page-banner {
  position: relative;
  min-height: 290px;
  display: grid;
  place-items: center;
  overflow: hidden;
  background: #124f77;
  color: var(--white);
}

.page-banner::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(7, 46, 72, 0.35), rgba(7, 46, 72, 0.72));
  content: "";
}

.page-banner img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.page-banner-content {
  position: relative;
  z-index: 1;
  padding: 64px 20px;
  text-align: center;
}

.page-banner h1 {
  margin: 0 0 8px;
  font-size: 40px;
  font-weight: 500;
}

.page-banner p {
  margin: 0;
  font-family: Georgia, serif;
  font-size: 18px;
}

.content-card {
  max-width: 960px;
  margin: 0 auto;
}

.content-card h2 {
  margin: 0 0 20px;
  font-size: 28px;
  font-weight: 500;
}

.content-card p {
  margin: 0 0 18px;
  color: #5c5c5c;
}

.content-image {
  width: 100%;
  max-height: 520px;
  margin: 34px 0;
  object-fit: cover;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 38px;
}

.detail-item {
  min-height: 180px;
  border-top: 3px solid var(--blue);
  padding: 24px;
  background: var(--soft);
}

.detail-item h3 {
  margin: 0 0 10px;
  font-size: 19px;
}

.detail-item p {
  margin: 0;
  font-size: 15px;
}

.contact-layout {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
}

.contact-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.contact-list li {
  padding: 13px 0;
  border-bottom: 1px solid var(--line);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.field {
  display: grid;
  gap: 7px;
}

.field-full {
  grid-column: 1 / -1;
}

.field label {
  color: #444;
  font-size: 15px;
}

.field input,
.field textarea,
.query-form input {
  width: 100%;
  border: 1px solid #ccc;
  border-radius: 2px;
  padding: 12px 14px;
  background: var(--white);
  color: var(--ink);
  outline: none;
}

.field input:focus,
.field textarea:focus,
.query-form input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px rgba(8, 118, 185, 0.12);
}

.field textarea {
  min-height: 145px;
  resize: vertical;
}

.form-message {
  min-height: 28px;
  margin-top: 12px;
  color: var(--blue-dark);
}

.query-panel {
  max-width: 900px;
  margin: 0 auto;
  border-top: 5px solid var(--blue);
  padding: 36px;
  background: var(--soft);
}

.query-panel h2 {
  margin: 0 0 26px;
  font-size: 26px;
  font-weight: 500;
}

.query-form {
  display: grid;
  grid-template-columns: 150px 1fr 220px;
  align-items: stretch;
}

.query-label {
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid #ccc;
  border-right: 0;
  background: #e9e9e9;
  color: #666;
}

.query-form input {
  border-radius: 0;
}

.query-form .button {
  border-radius: 0;
}

.article-list {
  display: grid;
  gap: 0;
  max-width: 920px;
  margin: 0 auto;
}

.article-row {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 26px;
  padding: 26px 0;
  border-bottom: 1px solid var(--line);
}

.article-date {
  color: var(--blue);
  font-family: Georgia, serif;
  font-size: 23px;
}

.article-row h2 {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 500;
}

.article-row p {
  margin: 0;
  color: var(--muted);
}

.site-footer {
  color: rgba(255, 255, 255, 0.95);
  background: #0876b9 url("footer-map.jpg") center top / cover no-repeat;
}

.footer-main {
  display: grid;
  grid-template-columns: 1.25fr 1fr 1fr;
  gap: 70px;
  padding: 62px 0;
}

.footer-main h2 {
  margin: 0 0 18px;
  font-size: 20px;
  font-weight: 500;
}

.footer-main p,
.footer-main a {
  margin: 8px 0;
  color: rgba(255, 255, 255, 0.9);
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-size: 18px;
}

.footer-logo img {
  width: 58px;
  height: 58px;
  object-fit: cover;
  object-position: left center;
}

.footer-nav {
  background: #4b4b4b;
}

.footer-nav-inner {
  display: flex;
  min-height: 64px;
  align-items: center;
  justify-content: center;
  gap: 34px;
  color: #ddd;
}

.footer-nav a:hover {
  color: var(--white);
}

@media (max-width: 1050px) {
  .brand {
    min-width: 0;
  }

  .brand span {
    font-size: 17px;
  }

  .main-nav a {
    padding: 0 10px;
    font-size: 14px;
  }

  .main-nav a.active::after {
    right: 10px;
    left: 10px;
  }
}

@media (max-width: 820px) {
  .container {
    width: min(100% - 28px, var(--content));
  }

  .header-inner {
    min-height: 66px;
  }

  .brand {
    max-width: calc(100% - 58px);
    white-space: normal;
  }

  .brand img {
    width: 38px;
    height: 38px;
    flex: 0 0 38px;
  }

  .menu-button {
    display: block;
    flex: 0 0 42px;
  }

  .main-nav {
    position: absolute;
    top: 66px;
    right: 0;
    left: 0;
    display: none;
    flex-direction: column;
    border-top: 1px solid var(--line);
    background: var(--white);
    box-shadow: 0 12px 20px rgba(0, 0, 0, 0.08);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    min-height: 50px;
    padding: 0 20px;
    border-bottom: 1px solid var(--line);
  }

  .main-nav a.active::after {
    top: 12px;
    right: auto;
    bottom: 12px;
    left: 0;
    width: 3px;
    height: auto;
  }

  .hero img {
    width: 100%;
    min-height: 0;
    height: auto;
    aspect-ratio: auto;
    object-fit: contain;
  }

  .section {
    padding: 58px 0;
  }

  .section-title {
    font-size: 28px;
  }

  .service-grid,
  .split,
  .news-grid,
  .contact-layout,
  .footer-main {
    grid-template-columns: 1fr;
  }

  .split {
    gap: 30px;
  }

  .feature-bar {
    grid-template-columns: 1fr 1fr;
  }

  .feature-bar span:nth-child(2) {
    border-right: 0;
  }

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

  .page-banner {
    min-height: 220px;
  }

  .page-banner h1 {
    font-size: 32px;
  }

  .query-form {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .query-label {
    min-height: 46px;
    border-right: 1px solid #ccc;
  }

  .article-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .footer-main {
    gap: 30px;
    padding: 48px 0;
  }

  .footer-nav-inner {
    flex-wrap: wrap;
    gap: 10px 22px;
    padding: 16px 0;
  }
}

@media (max-width: 520px) {
  body {
    font-size: 15px;
  }

  .brand span {
    font-size: 15px;
  }

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

  .form-grid,
  .feature-bar {
    grid-template-columns: 1fr;
  }

  .feature-bar span {
    border-right: 0;
    border-bottom: 1px solid #777;
  }

  .query-panel {
    padding: 24px 18px;
  }
}