:root {
  --blue: #0F4C99;
  --blue-2: #2185D0;
  --blue-d: #0A3570;
  --blue-s: #E8F2FB;
  --red: #C82329;
  --bg: #F5F7FA;
  --line: #E4E8F0;
  --text: #333333;
  --muted: #666666;
  --lite: #8A9099;
  --white: #ffffff;
  --wrap: 1180px;
  --header-h: 76px;
  --nav-h: 42px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 14px;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button, input, textarea, select { font-family: inherit; }
.wrap { width: min(var(--wrap), calc(100% - 32px)); margin: 0 auto; }

.masthead {
  background: transparent;
}
.topbar {
  height: 32px;
  background: linear-gradient(90deg, #082a5c 0%, #0f4c99 48%, #2185d0 100%);
  color: rgba(255,255,255,.88);
  font-size: 12px;
}
.topbar .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.site-header {
  background: #fff;
  border-bottom: 1px solid var(--line);
}
.header-inner {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand img { width: 48px; height: 48px; }
.brand strong { display: block; font-size: 26px; color: var(--blue); letter-spacing: 0.08em; line-height: 1.2; font-weight: 700; }
.brand span { display: block; font-size: 13px; color: var(--muted); margin-top: 4px; }
.menu-btn {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  width: 36px; height: 36px;
  cursor: pointer;
  color: var(--blue);
}

.nav {
  background: linear-gradient(90deg, #082a5c 0%, #0f4c99 48%, #2185d0 100%);
  height: var(--nav-h);
}
.nav .wrap {
  height: 100%;
  display: flex;
  align-items: stretch;
}
.nav a {
  color: #fff;
  padding: 0 16px;
  display: flex;
  align-items: center;
  font-size: 14px;
  white-space: nowrap;
}
.nav a:hover, .nav a.active {
  background: rgba(255,255,255,.18);
}

/* Banner */
.banner { position: relative; height: 360px; overflow: hidden; background: #0a2a5c; }
.slides { height: 100%; }
.slide {
  position: absolute; inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 0.6s ease;
}
.slide.active { opacity: 1; z-index: 1; }
.slide::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(90deg, rgba(10, 37, 80, 0.78) 0%, rgba(15, 76, 153, 0.42) 55%, rgba(10, 37, 80, 0.18) 100%);
}
.slide .wrap {
  position: relative; z-index: 2; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
  color: #fff;
}
.slide h2 { font-size: 34px; font-weight: 700; letter-spacing: 0.08em; text-shadow: 0 2px 8px rgba(0,0,0,.25); }
.slide p { margin-top: 10px; max-width: 560px; font-size: 15px; color: #e8f0fa; }
.dots {
  position: absolute; z-index: 3; left: 0; right: 0; bottom: 14px;
  display: flex; justify-content: center; gap: 8px;
}
.dots button {
  width: 10px; height: 10px; border-radius: 50%;
  border: 0; background: rgba(255,255,255,.45); cursor: pointer;
}
.dots button.on { background: #fff; }

.section { padding: 36px 0; background: var(--white); }
.section-gray { background: var(--bg); }
.sec-head {
  display: flex; align-items: end; justify-content: space-between;
  margin-bottom: 18px; padding-bottom: 10px;
  border-bottom: 2px solid var(--blue);
}
.sec-head h2 {
  font-size: 20px; color: var(--blue); font-weight: 700;
  padding-left: 10px; border-left: 4px solid var(--blue);
  line-height: 1.2;
}
.sec-head a { color: var(--blue-2); font-size: 13px; }
.sec-head a:hover { text-decoration: underline; }

.intro-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  align-items: center;
}
.intro-copy p { color: var(--muted); margin-bottom: 10px; }
.intro-pic {
  height: 210px; overflow: hidden; border: 1px solid var(--line);
}
.intro-pic img { width: 100%; height: 100%; object-fit: cover; }

.biz-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.biz-card {
  border: 1px solid var(--line);
  background: #fff;
  padding: 16px 14px 14px;
  transition: 0.2s;
}
.biz-card:hover { border-color: var(--blue-2); box-shadow: 0 6px 16px rgba(15,76,153,.08); transform: translateY(-2px); }
.biz-card img { width: 100%; height: 88px; object-fit: cover; margin-bottom: 10px; }
.biz-card h3 { font-size: 15px; color: var(--blue); margin-bottom: 6px; }
.biz-card p { font-size: 12px; color: var(--muted); line-height: 1.55; }

.proj-grid, .news-grid, .partner-grid {
  display: grid; gap: 12px;
}
.proj-grid { grid-template-columns: repeat(3, 1fr); }
.proj-card, .news-card {
  background: #fff; border: 1px solid var(--line); overflow: hidden;
}
.proj-card img { width: 100%; height: 118px; object-fit: cover; }
.proj-card .body, .news-card { padding: 12px; }
.proj-card h3, .news-card h3 { font-size: 14px; margin-bottom: 6px; color: var(--text); }
.proj-card p, .news-card p { font-size: 12px; color: var(--muted); }
.tag {
  display: inline-block; font-size: 12px; color: var(--blue);
  background: var(--blue-s); padding: 1px 6px; margin-bottom: 6px;
}
.home-split {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr;
  gap: 16px;
}
.news-list li {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  font-size: 13px;
}
.news-list a:hover { color: var(--blue-2); }
.news-list time { color: var(--lite); flex: 0 0 auto; }
.notice {
  background: #fff; border: 1px solid var(--line); padding: 14px 16px;
}
.notice h3 { color: var(--red); font-size: 16px; margin-bottom: 8px; border-left: 3px solid var(--red); padding-left: 8px; }
.notice li { padding: 7px 0; border-bottom: 1px dashed #eee; font-size: 13px; }
.notice time { color: var(--lite); margin-right: 8px; }

.partner-grid { grid-template-columns: repeat(5, 1fr); }
.partner {
  height: 52px; border: 1px solid var(--line); background: #fff;
  display: flex; align-items: center; justify-content: center;
  color: var(--blue); font-size: 13px; text-align: center; padding: 0 8px;
}

/* Inner pages */
.page-banner {
  height: 150px;
  background-size: cover;
  background-position: center;
  position: relative;
  color: #fff;
}
.page-banner::after {
  content: ""; position: absolute; inset: 0;
  background: rgba(10, 37, 80, 0.62);
}
.page-banner .wrap {
  position: relative; z-index: 1; height: 100%;
  display: flex; flex-direction: column; justify-content: center;
}
.page-banner h1 { font-size: 26px; letter-spacing: 0.12em; }
.crumbs { margin-top: 6px; font-size: 12px; color: #d5e4f6; }
.crumbs a:hover { text-decoration: underline; }

.layout {
  display: grid;
  grid-template-columns: 210px 1fr;
  gap: 16px;
  padding: 20px 0 32px;
}
.side {
  background: #fff;
  border: 1px solid var(--line);
  height: fit-content;
}
.side h3 {
  background: var(--blue);
  color: #fff;
  font-size: 15px;
  padding: 10px 14px;
  font-weight: 700;
}
.side a {
  display: block;
  padding: 10px 14px;
  border-bottom: 1px solid var(--line);
  color: var(--text);
}
.side a:hover, .side a.active {
  color: var(--blue);
  background: var(--blue-s);
  font-weight: 700;
}
.panel {
  background: #fff;
  border: 1px solid var(--line);
  padding: 18px 20px 22px;
  min-height: 420px;
}
.panel h2 {
  font-size: 18px;
  color: var(--blue);
  padding-bottom: 10px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 12px;
}
.panel h3 { font-size: 15px; margin: 16px 0 8px; color: var(--blue-d); }
.panel p { color: var(--muted); margin-bottom: 10px; }
.kv {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.kv th, .kv td { border: 1px solid var(--line); padding: 8px 10px; text-align: left; }
.kv th { width: 160px; background: #f7f9fc; color: var(--muted); font-weight: 600; }
.pic-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 12px 0 16px;
}
.pic-row img { width: 100%; height: 150px; object-fit: cover; border: 1px solid var(--line); }
.idea {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 12px 0;
}
.idea div { background: var(--blue-s); padding: 12px; }
.idea b { display: block; color: var(--blue); margin-bottom: 4px; }
.timeline { border-left: 3px solid var(--blue-s); margin: 8px 0 8px 8px; }
.timeline li { padding: 0 0 14px 16px; position: relative; }
.timeline li::before {
  content: ""; width: 9px; height: 9px; background: var(--blue);
  border-radius: 50%; position: absolute; left: -6px; top: 6px;
}
.timeline strong { color: var(--blue); margin-right: 8px; }
.party {
  border-top: 3px solid var(--red);
}
.party h2 { color: var(--red); }
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  height: 36px; padding: 0 16px; background: var(--blue); color: #fff; font-size: 13px; border: 0; cursor: pointer;
}
.btn:hover { background: var(--blue-2); }
.form { display: grid; gap: 10px; max-width: 560px; }
.form input, .form textarea, .form select {
  width: 100%; border: 1px solid var(--line); padding: 8px 10px; background: #fff;
}
.form textarea { min-height: 90px; resize: vertical; }
.empty { color: var(--lite); padding: 24px 0; text-align: center; }
.article { padding-bottom: 16px; margin-bottom: 16px; border-bottom: 1px dashed var(--line); }
.article h3 { margin: 0 0 6px; }
.article .meta { color: var(--lite); font-size: 12px; margin-bottom: 6px; }

.site-footer {
  background: var(--blue-d);
  color: #c5d3e8;
  padding: 28px 0 16px;
  font-size: 13px;
}
.ft-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 20px;
  margin-bottom: 16px;
}
.site-footer h4 { color: #fff; margin-bottom: 8px; font-size: 14px; }
.site-footer a:hover { color: #fff; }
.copy {
  border-top: 1px solid rgba(255,255,255,.12);
  padding-top: 12px;
  text-align: center;
  color: #9bb0cc;
  font-size: 12px;
}

@media (max-width: 960px) {
  .biz-grid, .proj-grid, .partner-grid { grid-template-columns: repeat(2, 1fr); }
  .intro-grid, .home-split, .layout, .ft-grid, .idea, .pic-row { grid-template-columns: 1fr; }
  .banner { height: 240px; }
  .slide h2 { font-size: 22px; }
  .nav { height: auto; display: none; }
  .nav.open { display: block; }
  .nav .wrap { flex-direction: column; }
  .nav a { height: 40px; border-top: 1px solid rgba(255,255,255,.12); }
  .menu-btn { display: inline-flex; align-items: center; justify-content: center; }
  .page-banner { height: 120px; }
}
@media (max-width: 640px) {
  .biz-grid, .proj-grid, .partner-grid { grid-template-columns: 1fr; }
  .brand strong { font-size: 18px; letter-spacing: 0.04em; }
  .brand img { width: 40px; height: 40px; }
}