:root {
  --blue: #1e2b79;
  --navy: #121c54;
  --accent: #3a56c5;
  --bg: #f4f7fb;
  --text: #1a2b3c;
  --muted: #5b6b7c;
  --line: #d7e2ee;
  --white: #fff;
  --max: 1160px;
  --nav-h: 72px;
  --hero-h: 400px;
  --font: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--font); color: var(--text); background: var(--bg); }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font: inherit; }
.wrap { width: min(var(--max), calc(100% - 40px)); margin: 0 auto; }

.nav {
  position: sticky; top: 0; z-index: 40;
  height: var(--nav-h);
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center;
  transition: box-shadow .3s ease, background .3s ease;
}
.nav.is-scrolled { box-shadow: 0 8px 24px rgba(6,42,74,.08); }
.nav-inner {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; color: var(--blue); font-weight: 700; font-size: 20px; letter-spacing: .06em; }
.brand-logo {
  width: 48px; height: 48px; border-radius: 50%; flex: 0 0 auto;
  object-fit: cover; object-position: center; background: #fff;
  box-shadow: 0 0 0 1px rgba(30,43,121,.12);
}
.menu {
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  font-size: 15px;
  color: #334556;
  transition: color .25s ease;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 14px; right: 14px; bottom: 6px; height: 2px;
  background: var(--blue);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .28s ease;
}
.nav-link:hover,
.nav-link.active,
.nav-item.active > .nav-link { color: var(--blue); font-weight: 600; }
.nav-link:hover::after,
.nav-link.active::after,
.nav-item.active > .nav-link::after { transform: scaleX(1); }
.nav-item {
  position: relative;
}
.nav-item .caret {
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .55;
  transition: transform .25s ease;
}
.nav-item:hover .caret,
.nav-item.open .caret { transform: rotate(180deg); }
.submenu {
  position: absolute;
  top: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 220px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 16px 40px rgba(18, 28, 84, .14);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .22s ease, transform .22s ease, visibility .22s ease;
  z-index: 50;
}
.submenu::before {
  content: "";
  position: absolute;
  left: 0; right: 0; top: -10px;
  height: 10px;
}
.nav-item:hover .submenu,
.nav-item.open .submenu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateX(-50%) translateY(0);
}
.submenu-item {
  display: block;
  padding: 10px 12px;
  border-radius: 8px;
  font-size: 14px;
  color: #334556;
  white-space: nowrap;
  transition: background .2s ease, color .2s ease, padding-left .2s ease;
}
.submenu-item:hover,
.submenu-item.on {
  background: rgba(30, 43, 121, .08);
  color: var(--blue);
  padding-left: 16px;
}
.menu-btn {
  display: none; width: 42px; height: 42px; border: 1px solid var(--line); background: #fff; border-radius: 8px;
}
.menu-btn span, .menu-btn span::before, .menu-btn span::after {
  display: block; width: 18px; height: 2px; background: var(--navy); margin: 0 auto; position: relative;
}
.menu-btn span::before, .menu-btn span::after { content: ""; position: absolute; left: 0; }
.menu-btn span::before { top: -6px; }
.menu-btn span::after { top: 6px; }

/* 页面切换与图片悬停动画 */
#app.page-enter { animation: pageIn .45s ease; }
@keyframes pageIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: none; }
}
.page-anim .panel,
.page-anim .service-card,
.page-anim .service-detail {
  transition: transform .35s ease, box-shadow .35s ease;
}
.img-zoom .card-media,
.img-zoom.service-card-media,
.img-zoom .service-card-media,
.img-zoom.service-media,
.service-media.img-zoom,
.gallery .img-zoom,
.card.img-zoom .card-media {
  overflow: hidden;
  border-radius: 6px;
}
.card-media,
.service-card-media,
.service-media {
  overflow: hidden;
  border-radius: 8px;
}
.card-media img,
.service-card-media img,
.service-media img,
.gallery figure img,
.card img {
  transition: transform .55s cubic-bezier(.22,.61,.36,1), filter .35s ease;
}
.card:hover img,
.service-card:hover img,
.service-media:hover img,
.gallery figure:hover img,
.img-zoom:hover img {
  transform: scale(1.08);
  filter: brightness(1.05);
}

.hero {
  position: relative;
  height: var(--hero-h);
  min-height: var(--hero-h);
  color: #fff;
  overflow: hidden;
  background: var(--navy);
}
.slides { height: 100%; display: flex; transition: transform .7s cubic-bezier(.22,.61,.36,1); }
.slide {
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(100deg, rgba(18,28,84,.9) 8%, rgba(30,43,121,.68) 52%, rgba(58,86,197,.3)),
    var(--slide, linear-gradient(120deg, #121c54, #1e2b79)) center/cover no-repeat;
  background-size: cover;
  animation: kenburns 12s ease-in-out infinite alternate;
}
@keyframes kenburns {
  from { background-size: 108% auto; }
  to { background-size: 118% auto; }
}
.slide .wrap > * {
  opacity: 0;
  transform: translateY(22px);
  animation: riseIn .7s ease forwards;
}
.slide .wrap > *:nth-child(1) { animation-delay: .08s; }
.slide .wrap > *:nth-child(2) { animation-delay: .18s; }
.slide .wrap > *:nth-child(3) { animation-delay: .28s; }
.slide .wrap > *:nth-child(4) { animation-delay: .38s; }
@keyframes riseIn {
  to { opacity: 1; transform: none; }
}
.slide h1 { margin: 10px 0 14px; font-size: 34px; letter-spacing: .04em; line-height: 1.25; }
.kicker { margin: 0; font-size: 28px; font-weight: 700; letter-spacing: .12em; }
.slide p { max-width: 720px; line-height: 1.75; color: rgba(255,255,255,.92); margin: 0 0 10px; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 42px; padding: 0 18px; border-radius: 4px; font-size: 14px; border: 0; cursor: pointer;
  transition: transform .25s ease, background .25s ease, box-shadow .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 20px rgba(46,163,255,.28); }
.btn-ghost { border: 1px solid rgba(255,255,255,.75); color: #fff; background: transparent; }
.hero-nav, .dots { position: absolute; z-index: 2; }
.hero-nav {
  top: 50%; transform: translateY(-50%);
  width: 40px; height: 40px; border-radius: 50%; border: 0;
  background: rgba(255,255,255,.18); color: #fff; cursor: pointer;
}
.hero-nav.prev { left: 16px; }
.hero-nav.next { right: 16px; }
.dots { left: 0; right: 0; bottom: 16px; display: flex; justify-content: center; gap: 8px; }
.dots button {
  width: 28px; height: 4px; border: 0; border-radius: 99px; background: rgba(255,255,255,.45); cursor: pointer; padding: 0;
}
.dots button.on { background: #fff; }

section { padding: 56px 0; }
.sec-title { margin: 0 0 8px; font-size: 28px; color: var(--navy); }
.sec-desc { margin: 0 0 28px; color: var(--muted); max-width: 860px; line-height: 1.8; }
.grid-5 { display: grid; grid-template-columns: repeat(5, 1fr); gap: 14px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-2 { display: grid; grid-template-columns: 1.15fr .85fr; gap: 20px; }
.card, .panel {
  background: var(--white); border: 1px solid var(--line);
}
.card {
  border-top: 3px solid var(--blue); padding: 18px; min-height: 140px;
  transition: transform .3s ease, box-shadow .3s ease;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(6,42,74,.1);
}
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity .7s ease, transform .7s ease;
}
.reveal.is-in {
  opacity: 1;
  transform: none;
}
.reveal-delay-1 { transition-delay: .08s; }
.reveal-delay-2 { transition-delay: .16s; }
.reveal-delay-3 { transition-delay: .24s; }
.reveal-delay-4 { transition-delay: .32s; }
.card h3, .panel h2, .panel h3 { margin: 0 0 8px; color: var(--blue); }
.panel h2 { color: var(--navy); margin-bottom: 14px; }
.card p, .panel p { margin: 0 0 12px; color: #31485c; line-height: 1.8; }
.card-media { margin-bottom: 10px; }
.card-media img, .card img, .gallery img, .cover { width: 100%; height: 160px; object-fit: cover; border-radius: 4px; margin-bottom: 10px; background: #e7eef6; }
.card-media img { margin-bottom: 0; }
.panel { padding: 24px; }
.list { margin: 0; padding-left: 18px; color: #31485c; line-height: 1.9; }
.stack { display: grid; gap: 16px; }
.tabs { display: flex; gap: 8px; margin-bottom: 18px; flex-wrap: wrap; }
.tab {
  border: 1px solid var(--line); background: #fff; color: var(--muted);
  padding: 8px 14px; border-radius: 4px; cursor: pointer;
}
.tab.on { background: var(--blue); border-color: var(--blue); color: #fff; }

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.service-card {
  display: block;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue);
  overflow: hidden;
  color: inherit;
  transition: transform .35s ease, box-shadow .35s ease;
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 18px 36px rgba(18, 28, 84, .12);
}
.service-card-media {
  height: 190px;
  background: #f3f6fb;
  display: grid;
  place-items: center;
  overflow: hidden;
}
.service-card-media.placeholder { min-height: 190px; }
.service-card-media img {
  width: 100%;
  height: 190px;
  object-fit: contain; /* 完整显示，不裁切 */
  object-position: center;
  margin: 0;
  border-radius: 0;
  background: #f3f6fb;
}
.service-card-body {
  padding: 16px;
  display: grid;
  gap: 8px;
}
.service-card-body strong {
  font-size: 17px;
  color: var(--navy);
}
.service-card-body span {
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}
.service-detail { margin-bottom: 0; }
.service-detail-title {
  margin: 0 0 18px;
  color: var(--navy);
  font-size: 26px;
}
.service-hero-img {
  margin: 0 0 20px;
  border-radius: 10px;
  overflow: hidden;
  background: #f3f6fb;
  border: 1px solid var(--line);
}
.service-hero-img img {
  width: 100%;
  max-height: 480px;
  height: auto;
  object-fit: contain; /* 详情页完整显示整张图 */
  object-position: center;
  display: block;
  margin: 0 auto;
  background: #f3f6fb;
}
.service-body p {
  margin: 0 0 12px;
  color: #31485c;
  line-height: 1.85;
  white-space: pre-wrap;
}
.rich { color: #31485c; line-height: 1.85; }
.rich p { margin: 0 0 12px; }
.rich img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 12px 0;
  border-radius: 8px;
}
.rich ul, .rich ol { margin: 0 0 12px; padding-left: 1.4em; }

.job-layout {
  display: grid;
  grid-template-columns: 1.35fr .75fr;
  gap: 20px;
  align-items: start;
}
.job-list { min-width: 0; }
.job-form-panel { position: sticky; top: calc(var(--nav-h) + 16px); }
.job-card { margin-bottom: 14px; }
.job-card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.job-tag {
  display: inline-flex;
  align-items: center;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(30, 43, 121, .08);
  color: var(--blue);
  font-size: 12px;
  flex: 0 0 auto;
}
.job-card-head h3 {
  margin: 0;
  font-size: 18px;
  color: var(--navy);
}
.job-card-body p { margin: 0 0 10px; }
.news-item {
  display: block; padding: 16px 0; border-bottom: 1px solid var(--line);
  transition: background .25s ease, padding-left .25s ease;
}
.news-item:hover { background: #f7fbff; padding-left: 8px; }
.news-item small { color: var(--accent); }
.news-item h3 { margin: 6px 0; font-size: 17px; color: var(--navy); }
.news-item p { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.7; }
.news-row { display: grid; grid-template-columns: 180px 1fr; gap: 16px; align-items: center; }
.news-row img { width: 180px; height: 110px; object-fit: cover; border-radius: 4px; background: #e7eef6; }
.form { display: grid; gap: 12px; }
.form label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.form input, .form textarea, .form select {
  width: 100%; border: 1px solid var(--line); border-radius: 4px; padding: 10px 12px; background: #fff; color: var(--text);
}
.form textarea { min-height: 110px; resize: vertical; }
.gallery { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.gallery figure { margin: 0; background: #fff; border: 1px solid var(--line); }
.gallery img { height: 200px; margin: 0; border-radius: 0; }
.gallery figcaption { padding: 10px 12px; color: var(--muted); font-size: 14px; }
.toast {
  margin-top: 8px; color: var(--blue); font-size: 14px;
}
footer { background: var(--navy); color: rgba(255,255,255,.82); padding: 28px 0; font-size: 13px; line-height: 1.8; }
footer strong { color: #fff; display: block; font-size: 16px; margin-bottom: 4px; }
.foot-grid { display: grid; grid-template-columns: 1.2fr 1fr 1fr; gap: 18px; }

@media (max-width: 1100px) {
  .grid-5 { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 960px) {
  :root { --hero-h: 400px; }
  .grid-3, .grid-2, .foot-grid, .gallery, .service-grid, .job-layout { grid-template-columns: 1fr 1fr; }
  .news-row { grid-template-columns: 140px 1fr; }
  .job-form-panel { position: static; }
}
@media (max-width: 720px) {
  :root { --hero-h: 400px; --nav-h: 64px; }
  .menu-btn { display: inline-grid; place-items: center; }
  .menu {
    display: none; position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: #fff; flex-direction: column; align-items: stretch; gap: 0; padding: 8px 16px 16px;
    border-bottom: 1px solid var(--line); box-shadow: 0 12px 24px rgba(6,42,74,.08);
  }
  .menu.open { display: flex; }
  .nav-link {
    display: flex;
    width: 100%;
    padding: 12px 4px;
    border-bottom: 1px solid var(--line);
  }
  .nav-link::after { display: none; }
  .nav-item { width: 100%; }
  .submenu {
    position: static;
    transform: none;
    min-width: 0;
    width: 100%;
    margin: 0 0 8px;
    box-shadow: none;
    border-radius: 8px;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
    background: #f7f9fc;
  }
  .nav-item.open .submenu,
  .nav-item:hover .submenu { display: block; transform: none; }
  .submenu-item { white-space: normal; }
  .grid-5, .grid-3, .grid-2, .foot-grid, .gallery, .news-row, .service-grid, .job-layout { grid-template-columns: 1fr; }
  .slide h1, .kicker { font-size: 26px; }
  .hero-nav { display: none; }
  .news-row img, .card img { width: 100%; height: 180px; }
  .service-card-media, .service-card-media img { height: 160px; }
  .service-hero-img img { max-height: 320px; }
  section { padding: 36px 0; }
}