:root {
  --ink: #132234;
  --muted: #607080;
  --line: #dbe4ed;
  --paper: #f5f8fb;
  --white: #ffffff;
  --blue: #0070ba;
  --blue-dark: #004f89;
  --cyan: #2bb4db;
  --red: #d53636;
  --shadow: 0 18px 44px rgba(19, 34, 52, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  background: var(--white);
  line-height: 1.58;
}

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

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: minmax(240px, 420px) 1fr;
  gap: 28px;
  align-items: center;
  min-height: 82px;
  padding: 12px clamp(18px, 4vw, 58px);
  border-bottom: 1px solid rgba(219, 228, 237, 0.95);
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
}

.logo-link img {
  width: min(420px, 100%);
  height: auto;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  justify-content: flex-end;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.main-nav a,
.button,
.category-card,
.text-link,
.site-footer a {
  text-decoration: none;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 18px;
  border-radius: 6px;
  font-weight: 800;
}

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

.button.secondary {
  color: var(--blue-dark);
  border: 1px solid var(--line);
  background: var(--white);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 430px);
  gap: clamp(28px, 6vw, 82px);
  align-items: center;
  min-height: calc(100vh - 82px);
  padding: clamp(44px, 6vw, 88px) clamp(18px, 5vw, 72px);
  background:
    linear-gradient(110deg, rgba(0, 112, 186, 0.12), rgba(43, 180, 219, 0.04) 42%, rgba(255, 255, 255, 0.98) 70%),
    var(--paper);
}

.hero-copy {
  max-width: 860px;
}

.hero-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 24px;
  border: 1px solid rgba(0, 112, 186, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(12px);
}

.hero-summary div {
  min-height: 104px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.hero-summary span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
}

.hero-summary strong {
  display: block;
  margin-top: 12px;
  color: var(--blue-dark);
  font-size: 25px;
  line-height: 1.12;
}

.hero-summary p {
  grid-column: 1 / -1;
  margin: 8px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 16px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--red);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 820px;
  margin: 0 0 22px;
  font-size: clamp(30px, 4.1vw, 50px);
  line-height: 1.08;
}

.hero p {
  max-width: 680px;
  color: var(--muted);
  font-size: 18px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--white);
}

.stats div {
  padding: 24px clamp(18px, 4vw, 46px);
  border-right: 1px solid var(--line);
}

.stats div:last-child {
  border-right: 0;
}

.stats strong {
  display: block;
  color: var(--blue);
  font-size: 31px;
  line-height: 1.1;
}

.stats span {
  color: var(--muted);
}

.section,
.split-section,
.message-section,
.closing-section,
.gallery-page {
  padding: clamp(56px, 8vw, 104px) clamp(18px, 5vw, 72px);
}

.section-heading {
  max-width: 860px;
  margin-bottom: 34px;
}

.section-heading h2,
.split-section h2,
.message-section h2,
.closing-section h2,
.gallery-page h1 {
  margin: 0 0 14px;
  font-size: clamp(30px, 4vw, 50px);
  line-height: 1.1;
}

.section-heading p,
.split-section p,
.message-section p,
.content-grid p,
.capability-grid p,
.gallery-page p {
  color: var(--muted);
}

.category-grid,
.capability-grid,
.content-grid,
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.category-card,
.content-grid article,
.capability-grid div,
.gallery-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.category-card {
  display: block;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.category-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--paper);
}

.category-card span {
  display: inline-block;
  margin: 18px 20px 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.category-card h3,
.category-card p,
.content-grid article,
.capability-grid div {
  padding-left: 20px;
  padding-right: 20px;
}

.category-card h3 {
  margin: 8px 0 8px;
}

.category-card p {
  margin: 0 0 20px;
  color: var(--muted);
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: clamp(24px, 5vw, 66px);
  align-items: center;
  background: var(--paper);
}

.image-panel img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.band {
  background: linear-gradient(180deg, #fff, #f2f7fb);
}

.capability-grid div,
.content-grid article {
  padding-top: 22px;
  padding-bottom: 24px;
}

.capability-grid h3,
.content-grid h3 {
  margin: 0 0 10px;
}

.text-link {
  color: var(--blue);
  font-weight: 900;
}

.news-section {
  background: var(--paper);
}

.news-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.news-list article {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 14px;
  min-height: 94px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
}

.news-list time {
  color: var(--blue);
  font-weight: 900;
}

.message-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 32px;
  align-items: start;
}

.online-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--white);
  box-shadow: var(--shadow);
}

.online-form label {
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
}

.online-form label:nth-child(4),
.online-form .form-note {
  grid-column: 1 / -1;
}

.online-form input,
.online-form select,
.online-form textarea {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--ink);
  background: var(--paper);
  font: inherit;
}

.online-form textarea {
  resize: vertical;
}

.online-form .button {
  width: max-content;
  border: 0;
  cursor: pointer;
}

.form-note {
  margin: 0;
  padding: 12px 14px;
  border-radius: 6px;
  background: #eaf7f2;
}

.closing-section {
  color: var(--white);
  background: linear-gradient(135deg, #112237, #005c99);
}

.closing-section p {
  max-width: 900px;
  color: #d8e6f2;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(180px, 320px) 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 24px clamp(18px, 5vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer img {
  width: min(320px, 100%);
}

.gallery-hero {
  padding-bottom: 28px;
}

.crumbs {
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 14px;
}

.crumbs a {
  color: var(--blue);
  text-decoration: none;
}

.gallery-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.filter-button {
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--ink);
  background: var(--white);
  cursor: pointer;
  font-weight: 800;
}

.filter-button.is-active {
  color: var(--white);
  border-color: var(--blue);
  background: var(--blue);
}

.gallery-card {
  margin: 0;
}

.gallery-card img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: contain;
  background: var(--paper);
}

.gallery-card figcaption {
  padding: 12px 16px;
  color: var(--muted);
  font-size: 14px;
}

@media (max-width: 1080px) {
  .site-header {
    grid-template-columns: 1fr;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .hero,
  .split-section,
  .message-section {
    grid-template-columns: 1fr;
  }

  .hero-summary {
    max-width: 620px;
  }
}

@media (max-width: 860px) {
  .category-grid,
  .capability-grid,
  .content-grid,
  .gallery-grid,
  .news-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (max-width: 620px) {
  .site-header {
    min-height: auto;
  }

  .logo-link img {
    max-width: 100%;
  }

  .main-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
  }

  .hero {
    min-height: auto;
  }

  .hero h1 {
    font-size: 28px;
  }

  .hero-summary {
    grid-template-columns: 1fr;
    padding: 18px;
  }

  .hero-summary p {
    grid-column: auto;
  }

  .category-grid,
  .capability-grid,
  .content-grid,
  .gallery-grid,
  .news-list {
    grid-template-columns: 1fr;
  }

  .online-form {
    grid-template-columns: 1fr;
  }

  .online-form label:nth-child(4),
  .online-form .form-note {
    grid-column: auto;
  }
}

/* Language navigation and multilingual layout */
.site-header{grid-template-columns:minmax(220px,360px) minmax(0,1fr) auto;gap:20px}
.language-switch{display:flex;align-items:center;gap:4px;padding:4px;background:#edf4f9;border:1px solid #dbe4ed;border-radius:8px;white-space:nowrap;font-size:14px}
.language-switch a{padding:6px 10px;text-decoration:none;border-radius:5px;color:#40576b}
.language-switch a[aria-current=page]{background:#0070ba;color:#fff}
.language-switch a:hover{background:#dbeaf5;color:#004f89}
.language-switch a:focus-visible{outline:3px solid #2bb4db;outline-offset:2px}
.company-name{font-weight:700}
html[lang=zh-CN] body{font-family:'Microsoft YaHei','PingFang SC',Arial,sans-serif}
html[lang=zh-CN] h1,html[lang=zh-CN] h2{line-height:1.35;letter-spacing:0}
[hidden]{display:none!important}
@media(max-width:1100px){.site-header{grid-template-columns:minmax(0,1fr) auto;gap:10px 16px}.main-nav{grid-column:1/-1;grid-row:2;justify-content:flex-start;flex-wrap:wrap;overflow:visible;white-space:normal}.language-switch{grid-column:2;grid-row:1}.logo-link img{max-width:360px;width:100%}}
@media(max-width:600px){.site-header{position:relative;padding:12px 16px;grid-template-columns:minmax(0,1fr) auto;gap:12px}.language-switch{font-size:13px;gap:0}.language-switch a{padding:6px 7px}.main-nav{font-size:14px;gap:10px 18px}.hero{min-height:0}.site-header .logo-link{min-width:0}}

.language-switch button{font:inherit;font-weight:600;cursor:pointer;padding:6px 10px;border:0;background:transparent;border-radius:5px;color:#40576b}
.language-switch button[aria-pressed=true]{background:#0070ba;color:white}
.language-switch button:focus-visible{outline:3px solid #2bb4db;outline-offset:2px}
@media(max-width:600px){.language-switch button{padding:6px 7px}}

html[lang=zh-CN] h1{font-size:clamp(30px,3.6vw,52px);text-wrap:balance}