/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif; color: #333; line-height: 1.6; background: #fff; }
a { text-decoration: none; color: inherit; transition: color .3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
.clearfix::after { content: ""; display: table; clear: both; }

/* ===== Header ===== */
.header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: #fff; box-shadow: 0 2px 8px rgba(0,0,0,.08);
  transition: box-shadow .3s;
}
.header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; }
.logo { font-size: 22px; font-weight: 700; color: #1a6fb5; white-space: nowrap; }
.logo span { color: #ff6600; }

/* Navigation */
.navbar_nav { display: flex; gap: 0; }
.navbar_nav > li { position: relative; }
.navbar_nav > li > a {
  display: block; padding: 24px 18px; font-size: 15px; color: #333;
  transition: color .3s;
}
.navbar_nav > li > a:hover,
.navbar_nav > li.active > a { color: #1a6fb5; }

/* Dropdown */
.dropdown_menu {
  display: none; position: absolute; top: 100%; left: 0;
  background: #fff; box-shadow: 0 4px 12px rgba(0,0,0,.12);
  min-width: 160px; z-index: 100;
}
.dropdown:hover .dropdown_menu { display: block; }
.dropdown_menu a {
  display: block; padding: 10px 20px; font-size: 14px; color: #333;
  border-bottom: 1px solid #f5f5f5;
}
.dropdown_menu a:hover { background: #f0f7ff; color: #1a6fb5; }

/* Mobile toggle */
#navToggle { display: none; }

/* ===== Hero Banner ===== */
.hero {
  margin-top: 70px; position: relative;
  height: 500px; overflow: hidden;
}
.hero img {
  width: 100%; height: 100%; object-fit: cover; display: block;
}
.hero-content {
  position: absolute; inset: 0; display: flex; flex-direction: column;
  align-items: center; justify-content: center; color: #fff; text-align: center;
}
.hero-logo { margin-bottom: 20px; }
.hero-logo img { width: 320px; height: auto; filter: drop-shadow(0 2px 8px rgba(0,0,0,.2)); }
.hero-content h1 { font-size: 42px; font-weight: 700; margin-bottom: 16px; text-shadow: 0 2px 8px rgba(0,0,0,.2); }
.hero-content p { font-size: 18px; max-width: 700px; opacity: .9; }
.hero-overlay {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(255,255,255,.08) 0%, transparent 70%);
}

/* ===== Section Common ===== */
.section { padding: 60px 0; }
.section-gray { background: #f7f9fc; }
.section-title {
  text-align: center; margin-bottom: 40px;
}
.section-title h2 { font-size: 30px; color: #1a6fb5; margin-bottom: 8px; }
.section-title p { font-size: 15px; color: #888; }
.section-title .line {
  width: 50px; height: 3px; background: #ff6600;
  margin: 12px auto 0;
}

/* ===== Service Cards ===== */
.service-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.service-card {
  background: #fff; border-radius: 8px; padding: 36px 24px; text-align: center;
  box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: transform .3s, box-shadow .3s;
}
.service-card:hover { transform: translateY(-6px); box-shadow: 0 8px 24px rgba(0,0,0,.12); }
.service-icon {
  width: 72px; height: 72px; margin: 0 auto 20px;
  background: linear-gradient(135deg, #1a6fb5, #1a8fe3);
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 32px; color: #fff;
}
.service-card h3 { font-size: 18px; color: #1a6fb5; margin-bottom: 12px; }
.service-card p { font-size: 14px; color: #666; line-height: 1.8; }

/* ===== About / Intro Block ===== */
.about-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center;
}
.about-img {
  height: 320px; border-radius: 8px; overflow: hidden;
}
.about-img img {
  width: 100%; height: 100%; object-fit: cover;
}
.about-text h3 { font-size: 24px; color: #1a6fb5; margin-bottom: 16px; }
.about-text p { font-size: 15px; color: #555; margin-bottom: 12px; line-height: 1.8; }

/* ===== Solution Cards ===== */
.solution-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.solution-card {
  background: #fff; border-radius: 8px; overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,.06); transition: transform .3s;
}
.solution-card:hover { transform: translateY(-4px); }
.solution-thumb {
  height: 180px; overflow: hidden;
}
.solution-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}
.solution-body { padding: 24px; }
.solution-body h3 { font-size: 18px; color: #1a6fb5; margin-bottom: 10px; }
.solution-body p { font-size: 14px; color: #666; line-height: 1.8; }
.solution-body .more {
  display: inline-block; margin-top: 12px; color: #1a6fb5; font-size: 14px;
}

/* ===== News List ===== */
.news-list { max-width: 800px; margin: 0 auto; }
.news-item {
  display: flex; gap: 20px; padding: 20px 0;
  border-bottom: 1px solid #eee;
}
.news-date {
  min-width: 80px; text-align: center; padding: 12px;
  background: #1a6fb5; color: #fff; border-radius: 6px;
}
.news-date .day { font-size: 28px; font-weight: 700; line-height: 1; }
.news-date .month { font-size: 12px; }
.news-info h4 { font-size: 16px; color: #333; margin-bottom: 6px; }
.news-info p { font-size: 14px; color: #888; line-height: 1.6; }

/* ===== Case Cards ===== */
.case-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.case-card {
  background: #fff; border-radius: 8px; overflow: hidden;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.case-thumb {
  height: 200px; overflow: hidden;
}
.case-thumb img {
  width: 100%; height: 100%; object-fit: cover;
}
.case-body { padding: 20px; }
.case-body h4 { font-size: 16px; color: #333; margin-bottom: 8px; }
.case-body p { font-size: 13px; color: #888; line-height: 1.6; }

/* ===== Contact ===== */
.contact-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 40px;
}
.contact-info-item {
  display: flex; gap: 16px; align-items: flex-start; margin-bottom: 24px;
}
.contact-icon {
  width: 48px; height: 48px; flex-shrink: 0;
  background: #1a6fb5; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 20px;
}
.contact-info-item h4 { font-size: 16px; color: #333; margin-bottom: 4px; }
.contact-info-item p { font-size: 14px; color: #666; }
.contact-map {
  height: 300px; border-radius: 8px; overflow: hidden;
}
.contact-map img {
  width: 100%; height: 100%; object-fit: cover;
}

/* ===== Team ===== */
.team-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 28px;
}
.team-card {
  text-align: center; background: #fff; border-radius: 8px;
  padding: 28px 16px; box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.team-avatar {
  width: 100px; height: 100px; margin: 0 auto 16px;
  border-radius: 50%; overflow: hidden;
}
.team-avatar img {
  width: 100%; height: 100%; object-fit: cover;
}
.team-card h4 { font-size: 16px; color: #333; margin-bottom: 4px; }
.team-card .role { font-size: 13px; color: #1a6fb5; margin-bottom: 8px; }
.team-card p { font-size: 13px; color: #888; }

/* ===== Culture ===== */
.culture-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
}
.culture-card {
  text-align: center; background: #fff; border-radius: 8px;
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.culture-grid .culture-card {
  min-height: 120px;
}
.culture-icon {
  width: 64px; height: 64px; margin: 0 auto 20px;
  border-radius: 50%; overflow: hidden;
}
.culture-card h3 { font-size: 18px; color: #1a6fb5; margin-bottom: 12px; }
.culture-card p { font-size: 14px; color: #666; line-height: 1.8; }

/* ===== Careers ===== */
.job-list { max-width: 800px; margin: 0 auto; }
.job-item {
  background: #fff; border-radius: 8px; padding: 28px;
  margin-bottom: 20px; box-shadow: 0 2px 12px rgba(0,0,0,.06);
  display: flex; justify-content: space-between; align-items: center;
}
.job-info h4 { font-size: 17px; color: #333; margin-bottom: 8px; }
.job-tags { display: flex; gap: 10px; flex-wrap: wrap; }
.job-tags span {
  font-size: 13px; color: #1a6fb5; background: #e8f4fd;
  padding: 4px 12px; border-radius: 4px;
}
.job-apply {
  padding: 10px 28px; background: #1a6fb5; color: #fff;
  border-radius: 4px; font-size: 14px; transition: background .3s;
}
.job-apply:hover { background: #0d5a96; }

/* ===== Page Banner ===== */
.page-banner {
  margin-top: 70px; height: 280px;
  background: linear-gradient(135deg, #0a4d8c 0%, #1a8fe3 50%, #1a6fb5 100%);
  display: flex; align-items: center; justify-content: center;
  color: #fff; text-align: center;
  position: relative; overflow: hidden;
}
.page-banner::before {
  content: ""; position: absolute; inset: 0;
  background: url('../images/hero-bg.svg') center/cover no-repeat;
  opacity: 0.3;
}
.page-banner h1 { font-size: 36px; margin-bottom: 8px; }
.page-banner p { font-size: 15px; opacity: .8; }
.breadcrumb { font-size: 14px; opacity: .7; margin-top: 8px; }
.breadcrumb a { color: #fff; }

/* ===== Footer ===== */
.footer {
  background: #1a2a3a; color: #ccc; padding: 40px 0 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px;
  padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.08);
}
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer p, .footer a { font-size: 14px; color: #999; line-height: 1.8; }
.footer a:hover { color: #fff; }
.footer-bottom {
  text-align: center; padding: 20px 0;
  font-size: 13px; color: #666;
}

/* ===== Form ===== */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; color: #555; margin-bottom: 6px; }
.form-group input, .form-group textarea {
  width: 100%; padding: 10px 14px; border: 1px solid #ddd;
  border-radius: 4px; font-size: 14px; transition: border-color .3s;
}
.form-group input:focus, .form-group textarea:focus {
  border-color: #1a6fb5; outline: none;
}
.btn-primary {
  display: inline-block; padding: 12px 36px;
  background: #1a6fb5; color: #fff; border: none;
  border-radius: 4px; font-size: 15px; cursor: pointer;
  transition: background .3s;
}
.btn-primary:hover { background: #0d5a96; }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .service-grid { grid-template-columns: repeat(2, 1fr); }
  .solution-grid, .case-grid, .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .team-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .about-block { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .navbar_nav { display: none; }
  #navToggle { display: block; cursor: pointer; width: 30px; }
  #navToggle span { display: block; width: 100%; height: 2px; background: #333; margin: 6px 0; }
  .hero { height: 350px; }
  .hero-content h1 { font-size: 28px; }
  .service-grid, .solution-grid, .case-grid, .culture-grid, .team-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}