/* Reset and Base Styles */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: "Microsoft YaHei", Arial, sans-serif; font-size: 14px; color: #333; line-height: 1.6; background-color: #fff; }
a { text-decoration: none; color: #333; transition: color 0.3s; }
a:hover { color: #0044aa; }
ul, li { list-style: none; }
.container { width: 1200px; margin: 0 auto; padding: 0 15px; }
.clearfix::after { content: ""; display: block; clear: both; }

/* Header */
header { padding: 20px 0; background-color: #fff; }
.header-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.logo { display: flex; align-items: center; }
.logo img { height: 50px; margin-right: 12px; } /* Placeholder for logo */
.logo-text {  flex-direction: column; justify-content: center; }
.company-name { font-size: 16px; color: #666; font-weight: bold; line-height: 1.2; margin-bottom: 2px; }
.site-name { font-size: 24px; color: #0044aa; font-family: "KaiTi", "楷体", serif; font-weight: bold; line-height: 1.2; }
.header-right { display: flex; align-items: center; }
.search-box { position: relative; margin-right: 30px; }
.search-box input { width: 200px; padding: 5px 30px 5px 10px; border: 1px solid #ddd; border-radius: 4px; outline: none; }
.search-box button { position: absolute; right: 5px; top: 50%; transform: translateY(-50%); background: none; border: none; cursor: pointer; color: #999; }
.nav ul { display: flex; }
.nav li { margin-left: 20px; }
.nav a { font-size: 16px; color: #666; }
.nav a:hover, .nav a.active { color: #0044aa; }

/* Banner */
.banner { width: 100%; overflow: hidden; }
.banner img { width: 100%; height: auto; display: block; }
.about-banner { position: relative; height: 400px; background: url('../images/about_banner.jpg') no-repeat center center; background-size: cover; background-color: #8bb2e0; display: flex; align-items: center; justify-content: center; color: #fff; text-align: center; }
.about-banner-placeholder h2 { font-size: 40px; letter-spacing: 5px; font-family: "KaiTi", serif; }

/* Main Content */
.section { padding: 50px 0; }
.section-title { text-align: center; margin-bottom: 40px; }
.section-title h3 { font-size: 24px; color: #555; margin-bottom: 5px; }
.section-title span { font-size: 12px; color: #999; text-transform: uppercase; display: block; }
.section-title::after { content: ""; display: block; width: 30px; height: 3px; background-color: #0044aa; margin: 15px auto 0; }

/* About Intro */
.about-intro .intro-content { display: flex; align-items: center; gap: 50px; position: relative; }
.about-intro .intro-text { flex: 1; position: relative; z-index: 2; }
.about-intro .intro-text h3 { font-size: 24px; color: #333; margin-bottom: 20px; font-weight: bold; }
.about-intro .intro-text p { margin-bottom: 15px; color: #666; line-height: 1.8; text-align: justify; }
.about-intro .intro-watermark { position: absolute; bottom: -40px; left: 0; font-size: 60px; color: #f2f2f2; font-weight: bold; z-index: -1; white-space: nowrap; font-family: Arial, sans-serif; opacity: 0.5; }
.about-intro .intro-image { flex: 1; }
.about-intro .intro-image img { width: 100%; border-radius: 4px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); }
.about-intro .img-placeholder { width: 100%; height: 300px; background: #eee url('../images/intro_tech.jpg') center no-repeat; background-size: cover; display: flex; align-items: center; justify-content: center; color: #999; border-radius: 4px; }

/* Services / Shortcuts (Hexagons) */
.section-header-center { text-align: center; margin-bottom: 50px; }
.section-header-center h3 { font-size: 28px; font-weight: normal; color: #333; margin-bottom: 10px; }
.section-header-center span { color: #999; font-size: 14px; }
.hex-grid { display: flex; justify-content: center; gap: 150px; }
.hex-item { text-align: center; }
.hex-link { display: block; text-decoration: none; color: inherit; transition: transform 0.3s; }
.hex-link:hover { transform: translateY(-5px); }
.hex-icon { width: 147px; height: 168px; background-color: #0044aa; margin: 0 auto 15px; clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%); display: flex; align-items: center; justify-content: center; transition: background-color 0.3s; cursor: pointer; }
.hex-link:hover .hex-icon { background-color: #003388; }
.hex-icon .icon-img { width: 147px; height: 168px; display: block; object-fit: contain; }
.hex-item h4 { font-size: 20px; color: #555; font-weight: normal; }

/* Team Banner */
.team-banner-section { height: 300px; background: url('../images/team_bg.jpg') no-repeat center center fixed; background-size: cover; background-color: #0044aa; display: flex; align-items: center; justify-content: center; color: #fff; text-align: center; margin-bottom: 50px; }
.team-overlay h3 { font-size: 32px; margin-bottom: 10px; }
.team-overlay p { font-size: 16px; opacity: 0.8; }

/* News Section */
.news-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 30px; }
.news-item { display: flex; gap: 20px; background: #fff; padding: 15px; transition: box-shadow 0.3s; border: 1px solid #eee; }
.news-item:hover { box-shadow: 0 5px 15px rgba(0,0,0,0.05); }
.news-thumb { width: 120px; height: 90px; background-color: #eee; flex-shrink: 0; }
.news-info { flex: 1; overflow: hidden; }
.news-info h4 { font-size: 15px; color: #333; margin-bottom: 8px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.news-info .date { font-size: 12px; color: #999; margin-bottom: 8px; display: block; }
.news-info .desc { font-size: 13px; color: #666; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* Notice Section (Homepage) */
.notice-tabs { display: flex; justify-content: space-between; margin-bottom: 20px; border-bottom: 1px solid #eee; }
.notice-tab-item { flex: 1; text-align: center; padding-bottom: 15px; cursor: pointer; font-size: 16px; position: relative; }
.notice-tab-item.active { color: #0044aa; font-weight: bold; }
.notice-tab-item.active::after { content: ""; position: absolute; bottom: -1px; left: 0; width: 100%; height: 2px; background-color: #0044aa; }
.notice-content { display: flex; justify-content: space-between; gap: 30px; }
.notice-column { flex: 1; }
.notice-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 15px; border-bottom: 1px solid #eee; padding-bottom: 10px; }
.notice-header h4 { font-size: 16px; font-weight: normal; color: #333; border-left: 3px solid #0044aa; padding-left: 10px; }
.notice-header .more { font-size: 12px; color: #999; }
.notice-list li { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 13px; color: #666; }
.notice-list a { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 200px; }
.notice-list span { color: #999; flex-shrink: 0; margin-left: 10px; }

/* Policies Section */
.policies { background-color: #f9f9f9; }
.policies-content { display: flex; gap: 40px; align-items: flex-start; }
.policies-img { width: 40%; }
.policies-img img { width: 100%; height: auto; display: block; border-radius: 4px; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.policies-list-wrapper { width: 60%; }
.policies-tabs { display: flex; margin-bottom: 20px; }
.policies-tab { padding: 8px 20px; background-color: #fff; margin-right: 10px; cursor: pointer; border: 1px solid #eee; transition: all 0.3s; }
.policies-tab.active { background-color: #0044aa; color: #fff; border-color: #0044aa; }
.policies-list li { border-bottom: 1px dashed #ddd; padding: 12px 0; display: flex; justify-content: space-between; }
.policies-list li:last-child { border-bottom: none; }
.policies-more { text-align: right; margin-top: 10px; }
.policies-more a { font-size: 12px; color: #999; }

/* Footer */
footer { padding: 40px 0 20px; background-color: #fff; border-top: 1px solid #eee; text-align: center; color: #666; font-size: 13px; }
.footer-info { margin-bottom: 20px; line-height: 2; }
.footer-links { margin-bottom: 15px; }
.footer-links a { margin: 0 10px; color: #666; }
.copyright { color: #999; }

/* Bidding Page */
.bidding-banner { margin-bottom: 30px; }

.bidding-section .sidebar, .contact-section .sidebar { width: 250px; float: left; }
.sidebar-menu { border: 1px solid #eee; background: #fff; }
.sidebar-menu ul li { border-bottom: 1px solid #eee; }
.sidebar-menu ul li:last-child { border-bottom: none; }
.sidebar-menu a { display: block; padding: 15px 20px; font-size: 15px; color: #333; display: flex; justify-content: space-between; align-items: center; transition: all 0.3s; }
.sidebar-menu a:hover, .sidebar-menu li.active a { background-color: #f9f9f9; color: #0044aa; font-weight: bold; }
.sidebar-menu .arrow { color: #ccc; font-family: monospace; }
.sidebar-menu a:hover .arrow, .sidebar-menu li.active .arrow { color: #0044aa; }

.bidding-section .main-content, .contact-section .main-content { width: 890px; float: right; }
.content-header { border-bottom: 2px solid #0044aa; padding-bottom: 15px; margin-bottom: 20px; display: flex; justify-content: space-between; align-items: center; }
.content-header h3 { font-size: 20px; color: #333; border-left: 4px solid #0044aa; padding-left: 10px; line-height: 1; }

.list-search form { display: flex; align-items: center; font-size: 13px; color: #666; }
.list-search label { margin-right: 5px; margin-left: 15px; }
.list-search input[type="text"], .list-search input[type="date"] { padding: 4px 8px; border: 1px solid #ddd; border-radius: 2px; outline: none; width: 120px; }
.list-search .date-input { width: 100px; }
.list-search .search-btn { background: url('../images/sou.png') no-repeat center center; background-size: 90%; color: #fff; border: none; width: 30px; height: 26px; border-radius: 2px; margin-left: 10px; cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; }

.index-search-container { display: flex; justify-content: center; margin-bottom: 50px; }
.index-search-container .search-wrapper { width: 700px; background-color: #fff; padding: 0; border-radius: 30px; border: 2px solid #0044aa; overflow: hidden; box-shadow: 0 5px 15px rgba(0, 68, 170, 0.1); display: flex; }
.index-search-container .search-wrapper form { display: flex; width: 100%; }
.index-search-container .search-input { flex: 1; border: none; padding: 15px 25px; font-size: 16px; outline: none; }
.index-search-container .search-btn { width: 120px; background-color: #0044aa; color: #fff; border: none; font-size: 18px; font-weight: bold; cursor: pointer; transition: background-color 0.3s; display: flex; align-items: center; justify-content: center; }
.index-search-container .search-btn:hover { background-color: #003388; }

.bidding-list ul li { border-bottom: 1px dashed #eee; padding: 20px 0; }
.bidding-list .list-head { display: flex; align-items: center; margin-bottom: 10px; }
.bidding-list .icon { color: #d00; margin-right: 10px; font-weight: bold; font-size: 16px; }
.bidding-list .title { font-size: 16px; color: #333; font-weight: bold; flex: 1; }
.bidding-list .title:hover { color: #0044aa; }
.bidding-list .date { font-size: 14px; color: #999; }
.bidding-list .summary { font-size: 13px; color: #888; line-height: 1.6; text-align: justify; padding-left: 20px; }

.pagination { text-align: center; margin-top: 40px; font-size: 13px; color: #666; }
.pagination span, .pagination a { display: inline-block; padding: 5px 10px; border: 1px solid #ddd; margin: 0 3px; border-radius: 2px; color: #666; }
.pagination a:hover { border-color: #0044aa; color: #0044aa; }

/* Detail Page */
.detail-section { padding: 20px 0 50px; }
.breadcrumb { font-size: 14px; color: #666; margin-bottom: 30px; border-bottom: 1px solid #eee; padding-bottom: 15px; }
.breadcrumb a { color: #666; }
.breadcrumb a:hover { color: #0044aa; }

.article-container { padding: 0 20px; }
.article-title { font-size: 26px; color: #333; text-align: center; font-weight: bold; margin-bottom: 20px; line-height: 1.4; }
.article-meta { text-align: center; color: #999; font-size: 13px; margin-bottom: 40px; border-bottom: 1px dashed #eee; padding-bottom: 20px; }
.article-meta span { margin: 0 15px; }

.article-content { font-size: 16px; color: #333; line-height: 2; text-align: justify; }
.article-content p { margin-bottom: 15px; }
.article-content table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px; }
.article-content th, .article-content td { border: 1px solid #ddd; padding: 10px; text-align: center; }
.article-content th { background-color: #f5f5f5; font-weight: bold; color: #333; }
.article-content td { color: #666; }

/* Contact Page */
.contact-block { margin-bottom: 40px; }
.contact-block h4 { font-size: 16px; color: #333; font-weight: bold; margin-bottom: 15px; border-left: 3px solid #0044aa; padding-left: 10px; }
.contact-block .info-list p { margin-bottom: 8px; color: #666; font-size: 14px; }
.contact-block .map-container { margin-top: 15px; border: 1px solid #ddd; padding: 5px; background: #fff; }
.contact-block .map-container img { width: 100%; height: auto; display: block; min-height: 300px; }