/* ========================================
   山东诺德建设工程有限公司 - 官网样式
   设计风格：简约大气、专业严谨
   ======================================== */

/* === CSS 变量 === */
:root {
  --color-primary: #0a1e37;
  --color-primary-light: #1a3a5c;
  --color-accent: #c8961e;
  --color-accent-light: #e0b040;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-bg: #ffffff;
  --color-bg-light: #f7f8fa;
  --color-bg-gray: #f0f2f5;
  --color-border: #e5e7eb;
  --color-success: #10b981;
  --color-danger: #ef4444;
  --radius: 6px;
  --radius-lg: 12px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --transition: all 0.3s ease;
  --max-width: 1200px;
  --header-height: 72px;
}

/* === 重置 === */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent); }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; font-family: inherit; }
input, textarea, select { font-family: inherit; font-size: inherit; }

/* === 布局 === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 20px; }
.section-header { text-align: center; margin-bottom: 48px; }
.section-tag {
  display: inline-block; font-size: 0.8rem; font-weight: 600;
  letter-spacing: 2px; color: var(--color-accent); margin-bottom: 8px;
}
.section-title { font-size: 1.8rem; font-weight: 700; color: var(--color-primary); }
.text-center { text-align: center; }
.bg-light { background: var(--color-bg-light); }

/* === 按钮 === */
.btn {
  display: inline-block; padding: 10px 28px; border-radius: var(--radius);
  font-size: 0.95rem; font-weight: 500; transition: var(--transition);
  border: 2px solid transparent; text-align: center;
}
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-light); color: #fff; transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-outline { border-color: var(--color-primary); color: var(--color-primary); background: transparent; }
.btn-outline:hover { background: var(--color-primary); color: #fff; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { opacity: 0.85; }
.btn-lg { padding: 14px 40px; font-size: 1.05rem; }
.btn-sm { padding: 6px 16px; font-size: 0.85rem; }
.btn-block { display: block; width: 100%; }

/* === 顶部信息栏 === */
.top-bar { background: var(--color-primary); color: rgba(255,255,255,0.85); font-size: 0.83rem; padding: 6px 0; }
.top-bar-inner { display: flex; justify-content: space-between; align-items: center; }
.top-bar-item { color: rgba(255,255,255,0.85); }
.top-bar-item:hover { color: #fff; }
.top-bar-divider { margin: 0 12px; opacity: 0.4; }

/* === 导航栏 === */
.header { background: #fff; box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 1000; transition: var(--transition); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: var(--header-height); }
.logo { display: flex; align-items: center; gap: 12px; }
.logo-text { display: flex; flex-direction: column; }
.logo-name { font-size: 1.3rem; font-weight: 800; color: var(--color-primary); letter-spacing: 1px; }
.logo-sub { font-size: 0.65rem; color: var(--color-text-light); letter-spacing: 2px; text-transform: uppercase; }
.nav-list { display: flex; gap: 4px; }
.nav-link {
  display: block; padding: 8px 18px; font-size: 0.97rem; font-weight: 500;
  color: var(--color-text); border-radius: var(--radius); position: relative;
}
.nav-link:hover, .nav-link.active { color: var(--color-accent); }
.nav-link.active::after {
  content: ''; position: absolute; bottom: -4px; left: 50%; transform: translateX(-50%);
  width: 24px; height: 3px; background: var(--color-accent); border-radius: 2px;
}
.menu-toggle { display: none; flex-direction: column; gap: 5px; padding: 8px; background: none; }
.menu-toggle span { width: 24px; height: 2px; background: var(--color-primary); transition: var(--transition); }

/* === 英雄横幅 === */
.hero { position: relative; height: 520px; overflow: hidden; }
.hero-slider { position: relative; width: 100%; height: 100%; }
.hero-slide {
  position: absolute; top: 0; left: 0; width: 100%; height: 100%;
  background-size: cover; background-position: center;
  display: flex; align-items: center; opacity: 0; transition: opacity 1s ease;
}
.hero-slide.active { opacity: 1; }
.hero-content { color: #fff; max-width: 700px; }
.hero-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 16px; line-height: 1.3; }
.hero-subtitle { font-size: 1.15rem; margin-bottom: 32px; opacity: 0.9; }
.hero-dots {
  position: absolute; bottom: 24px; left: 50%; transform: translateX(-50%);
  display: flex; gap: 10px;
}
.hero-dot { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; transition: var(--transition); }
.hero-dot.active { background: var(--color-accent); width: 30px; border-radius: 5px; }

/* === 数据统计 === */
.stats-section { background: var(--color-primary); padding: 40px 0; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.stat-item { text-align: center; color: #fff; }
.stat-number { font-size: 2.5rem; font-weight: 800; color: var(--color-accent); margin-bottom: 4px; }
.stat-label { font-size: 0.9rem; opacity: 0.8; }

/* === 通用内容区 === */
.content-section { padding: 72px 0; }
.content-heading { font-size: 1.6rem; font-weight: 700; color: var(--color-primary); margin-bottom: 24px; position: relative; padding-left: 16px; }
.content-heading::before { content: ''; position: absolute; left: 0; top: 50%; transform: translateY(-50%); width: 4px; height: 24px; background: var(--color-accent); border-radius: 2px; }

/* === 公司简介（首页） === */
.about-section { padding: 72px 0; background: var(--color-bg-light); }
.about-content { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.about-text p { margin-bottom: 16px; line-height: 1.9; color: var(--color-text); }
.about-image-box {
  height: 320px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5); font-size: 1.1rem;
}

.about-image-box {
  height: 320px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.5); font-size: 1.1rem;
  overflow: hidden;
}
.about-image-box img,
.about-real-image,
.service-real-image {
  width: 100%; height: 100%; object-fit: cover; display: block;
}

/* === 核心业务 === */
.services-section { padding: 72px 0; }
.services-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
/* 当最后一行只有1个卡片时（总数为 3n+1），将其居中显示 */
.service-card:last-child:nth-child(3n+1) { grid-column: 2; }
.service-card {
  background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg);
  overflow: hidden; transition: var(--transition); position: relative;
}
.service-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 3px; background: var(--color-accent); transform: scaleX(0); transition: var(--transition); transform-origin: left; z-index: 2; }
.service-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); border-color: transparent; }
.service-card:hover::before { transform: scaleX(1); }
.service-card-highlight { background: var(--color-primary); color: #fff; }
.service-card-highlight .service-title, .service-card-highlight .service-desc { color: #fff; }
.service-card-highlight .service-link { color: var(--color-accent-light); }
.service-card-image { height: 180px; overflow: hidden; position: relative; }
.service-card-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.service-card:hover .service-card-image img { transform: scale(1.05); }
.service-card-body { padding: 24px; }
.service-title { font-size: 1.2rem; font-weight: 700; margin-bottom: 12px; color: var(--color-primary); }
.service-desc { font-size: 0.9rem; color: var(--color-text-light); line-height: 1.7; margin-bottom: 16px; }
.service-link { font-size: 0.87rem; color: var(--color-accent); font-weight: 500; }

/* === 项目业绩（首页） === */
.projects-section { padding: 72px 0; background: var(--color-bg-light); }
.projects-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.project-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); }
.project-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.project-image { height: 200px; overflow: hidden; position: relative; }
.project-image img {
  width: 100%; height: 100%; object-fit: cover; transition: var(--transition);
}
.project-card:hover .project-image img { transform: scale(1.05); }
.project-image-placeholder {
  width: 100%; height: 100%; background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.6); font-size: 0.9rem;
}
.project-info { padding: 20px; }
.project-tag { display: inline-block; font-size: 0.75rem; color: var(--color-accent); background: rgba(200,150,30,0.1); padding: 2px 10px; border-radius: 12px; margin-bottom: 8px; }
.project-title { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; }
.project-desc { font-size: 0.85rem; color: var(--color-text-light); line-height: 1.6; margin-bottom: 12px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.project-date { font-size: 0.8rem; color: var(--color-text-light); }
.project-meta { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--color-text-light); }

/* === 新闻资讯（首页） === */
.news-section { padding: 72px 0; }
.news-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.news-card { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); display: flex; flex-direction: column; }
.news-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.news-image { height: 160px; position: relative; overflow: hidden; }
.news-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-card:hover .news-image img { transform: scale(1.05); }
.news-image-placeholder { width: 100%; height: 100%; background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary)); display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.5); font-size: 0.85rem; }
.news-date-badge { position: absolute; bottom: 8px; left: 8px; background: rgba(0,0,0,0.6); color: #fff; font-size: 0.73rem; padding: 2px 8px; border-radius: 4px; }
.news-body { padding: 16px; flex: 1; display: flex; flex-direction: column; }
.news-category { font-size: 0.73rem; color: var(--color-accent); margin-bottom: 6px; }
.news-title { font-size: 0.97rem; font-weight: 700; color: var(--color-primary); margin-bottom: 8px; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-summary { font-size: 0.83rem; color: var(--color-text-light); line-height: 1.6; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

/* === CTA === */
.cta-section { background: linear-gradient(rgba(10,30,55,0.92), rgba(10,30,55,0.92)), url('/images/cta-bg.jpg'); background-size: cover; background-position: center; padding: 60px 0; text-align: center; }
.cta-title { font-size: 1.8rem; font-weight: 800; color: #fff; margin-bottom: 12px; }
.cta-text { font-size: 1.05rem; color: rgba(255,255,255,0.8); margin-bottom: 28px; }

/* === 页脚 === */
.footer { background: var(--color-primary); color: rgba(255,255,255,0.7); padding-top: 56px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 32px; padding-bottom: 40px; }
.footer-title { font-size: 1.05rem; font-weight: 700; color: #fff; margin-bottom: 16px; }
.footer-text { font-size: 0.85rem; line-height: 1.8; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 0.85rem; color: rgba(255,255,255,0.65); }
.footer-links a:hover { color: var(--color-accent); padding-left: 4px; }
.footer-contact-list li { font-size: 0.85rem; margin-bottom: 8px; }
.footer-contact-list strong { color: rgba(255,255,255,0.5); font-weight: normal; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding: 20px 0; }
.footer-bottom-inner { display: flex; justify-content: space-between; font-size: 0.8rem; }
.footer-bottom a { color: rgba(255,255,255,0.5); }

/* === 页面横幅 === */
.page-banner { height: 260px; display: flex; align-items: center; justify-content: center; text-align: center; background-size: cover; background-position: center; color: #fff; }
.page-banner-title { font-size: 2rem; font-weight: 800; margin-bottom: 8px; }
.page-banner-sub { font-size: 1rem; opacity: 0.85; }

/* === 面包屑 === */
.breadcrumb { background: var(--color-bg-light); padding: 12px 0; font-size: 0.85rem; color: var(--color-text-light); }
.breadcrumb a { color: var(--color-text-light); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb .sep { margin: 0 8px; }
.breadcrumb .current { color: var(--color-text); }

/* === 关于我们 - 详情 === */
.about-detail { display: grid; grid-template-columns: 1.3fr 1fr; gap: 48px; align-items: start; }
.about-detail-text p { margin-bottom: 16px; line-height: 1.9; }
.image-placeholder-large {
  width: 100%; height: 360px; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center;
  color: rgba(255,255,255,0.4); font-size: 1rem;
}

/* === 时间线 === */
.timeline { position: relative; max-width: 800px; margin: 0 auto; padding-left: 40px; }
.timeline::before { content: ''; position: absolute; left: 12px; top: 0; bottom: 0; width: 2px; background: var(--color-border); }
.timeline-item { position: relative; margin-bottom: 32px; }
.timeline-item::before { content: ''; position: absolute; left: -34px; top: 4px; width: 12px; height: 12px; border-radius: 50%; background: var(--color-accent); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--color-accent); }
.timeline-year { font-size: 1.3rem; font-weight: 800; color: var(--color-accent); margin-bottom: 4px; }
.timeline-content h3 { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 4px; }
.timeline-content p { font-size: 0.9rem; color: var(--color-text-light); }

/* === 资质卡片 === */
.qual-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.qual-card { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 32px 20px; text-align: center; transition: var(--transition); }
.qual-card:hover { box-shadow: var(--shadow); border-color: var(--color-accent); transform: translateY(-2px); }
.qual-icon { font-size: 2.5rem; margin-bottom: 12px; }
.qual-card h3 { font-size: 0.95rem; font-weight: 700; color: #c0392b; }
.qual-highlight { color: #c0392b; font-weight: 700; }

/* === 企业文化 === */
.culture-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.culture-card { background: #fff; border-radius: var(--radius-lg); padding: 32px 24px; text-align: center; border-top: 3px solid var(--color-accent); transition: var(--transition); }
.culture-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }
.culture-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--color-primary); margin-bottom: 12px; }
.culture-card p { font-size: 0.88rem; color: var(--color-text-light); line-height: 1.7; }

/* === 产品服务 - 详情行 === */
.service-detail { padding: 64px 0; }
.service-detail-row { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: center; }
.service-detail-row.reverse .service-detail-image { order: 2; }
.service-detail-image {
  width: 100%; height: 360px; border-radius: var(--radius-lg);
  overflow: hidden; box-shadow: var(--shadow);
}
.service-detail-image img { width: 100%; height: 100%; object-fit: cover; }
.service-detail-tag { display: inline-block; font-size: 0.8rem; color: var(--color-accent); background: rgba(200,150,30,0.1); padding: 4px 14px; border-radius: 14px; margin-bottom: 12px; }
.service-detail-title { font-size: 1.6rem; font-weight: 800; color: var(--color-primary); margin-bottom: 16px; }
.service-detail-list { margin: 16px 0; }
.service-detail-list li { padding: 6px 0 6px 24px; position: relative; font-size: 0.92rem; color: var(--color-text); }
.service-detail-list li::before { content: '▶'; position: absolute; left: 0; color: var(--color-accent); font-size: 0.7rem; top: 10px; }
.service-detail-text p { font-size: 0.92rem; color: var(--color-text); line-height: 1.9; margin-bottom: 12px; }

/* === 项目筛选 === */
.filter-bar { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; margin-bottom: 36px; }
.filter-btn { padding: 8px 22px; border-radius: 20px; background: var(--color-bg-gray); color: var(--color-text-light); font-size: 0.9rem; transition: var(--transition); }
.filter-btn:hover, .filter-btn.active { background: var(--color-primary); color: #fff; }

/* === 新闻列表（列表样式） === */
.news-list { display: flex; flex-direction: column; gap: 20px; }
.news-list-item { display: grid; grid-template-columns: 220px 1fr; gap: 24px; background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); transition: var(--transition); padding: 16px; }
.news-list-item:hover { box-shadow: var(--shadow); }
.news-list-image { width: 220px; height: 140px; border-radius: var(--radius); overflow: hidden; flex-shrink: 0; }
.news-list-image img { width: 100%; height: 100%; object-fit: cover; transition: var(--transition); }
.news-list-item:hover .news-list-image img { transform: scale(1.05); }
.news-list-body { display: flex; flex-direction: column; justify-content: center; }
.news-list-title { font-size: 1.15rem; font-weight: 700; color: var(--color-primary); margin: 6px 0; }
.news-list-summary { font-size: 0.88rem; color: var(--color-text-light); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list-meta { display: flex; gap: 20px; font-size: 0.8rem; color: var(--color-text-light); margin-top: 8px; }

/* === 分页 === */
.pagination { display: flex; gap: 8px; justify-content: center; margin-top: 40px; }
.page-btn { display: inline-block; padding: 8px 14px; border: 1px solid var(--color-border); border-radius: var(--radius); color: var(--color-text); font-size: 0.9rem; transition: var(--transition); }
.page-btn:hover, .page-btn.active { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }

/* === 文章详情 === */
.article-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; }
.article-header { margin-bottom: 24px; padding-bottom: 20px; border-bottom: 1px solid var(--color-border); }
.article-title { font-size: 1.6rem; font-weight: 800; color: var(--color-primary); margin: 8px 0; line-height: 1.4; }
.article-meta { display: flex; gap: 20px; font-size: 0.83rem; color: var(--color-text-light); }
.article-cover { margin-bottom: 24px; border-radius: var(--radius-lg); overflow: hidden; }
.article-cover-img { width: 100%; max-height: 420px; object-fit: cover; display: block; }
.article-content { font-size: 0.97rem; line-height: 2; color: var(--color-text); }
.article-content p { margin-bottom: 16px; }
.article-content img { margin: 20px 0; border-radius: var(--radius); }
.article-sidebar { position: sticky; top: 90px; }
.sidebar-block { background: #fff; border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 20px; margin-bottom: 20px; }
.sidebar-title { font-size: 1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--color-accent); }
.related-list { display: flex; flex-direction: column; gap: 12px; }
.related-item { display: flex; flex-direction: column; gap: 4px; padding: 10px; background: var(--color-bg-light); border-radius: var(--radius); transition: var(--transition); }
.related-item:hover { background: var(--color-bg-gray); }
.related-date { font-size: 0.75rem; color: var(--color-text-light); }
.related-title { font-size: 0.88rem; color: var(--color-text); line-height: 1.5; }
.sidebar-contact { text-align: center; }
.sidebar-contact p { font-size: 0.85rem; color: var(--color-text-light); margin-bottom: 8px; }
.sidebar-phone { font-size: 1.4rem; font-weight: 800; color: var(--color-accent) !important; }

/* === 联系我们 === */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; }
.contact-info-list { display: flex; flex-direction: column; gap: 20px; }
.contact-info-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-info-icon { font-size: 1.5rem; width: 48px; height: 48px; display: flex; align-items: center; justify-content: center; background: var(--color-bg-light); border-radius: 50%; flex-shrink: 0; }
.contact-info-item h4 { font-size: 0.9rem; color: var(--color-text-light); margin-bottom: 2px; }
.contact-info-item p { font-size: 1.05rem; font-weight: 600; color: var(--color-primary); }
.contact-form-wrap { background: var(--color-bg-light); border-radius: var(--radius-lg); padding: 32px; }

/* === 表单 === */
.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 0.88rem; font-weight: 600; color: var(--color-text); margin-bottom: 6px; }
.form-group .required { color: var(--color-danger); }
.form-group input, .form-group textarea, .form-group select {
  width: 100%; padding: 10px 14px; border: 1px solid var(--color-border); border-radius: var(--radius);
  font-size: 0.92rem; transition: var(--transition); background: #fff;
}
.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
  outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(200,150,30,0.1);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row .form-group { margin-bottom: 18px; }
.form-hint { font-size: 0.8rem; color: var(--color-text-light); margin-top: 4px; }
.form-actions { display: flex; gap: 12px; margin-top: 24px; }
.alert { padding: 12px 18px; border-radius: var(--radius); margin-bottom: 20px; font-size: 0.9rem; }
.alert-success { background: rgba(16,185,129,0.1); color: var(--color-success); border: 1px solid rgba(16,185,129,0.3); }
.alert-danger { background: rgba(239,68,68,0.1); color: var(--color-danger); border: 1px solid rgba(239,68,68,0.3); }

/* === 地图 === */
.map-section { padding: 56px 0; background: var(--color-bg-light); }
.map-placeholder { height: 360px; background: var(--color-bg-gray); border-radius: var(--radius-lg); display: flex; align-items: center; justify-content: center; color: var(--color-text-light); }

/* === 404/错误页 === */
.error-page { min-height: 60vh; display: flex; align-items: center; justify-content: center; text-align: center; }
.error-code { font-size: 6rem; font-weight: 900; color: var(--color-primary); line-height: 1; }
.error-message { font-size: 1.2rem; color: var(--color-text-light); margin: 12px 0 24px; }

/* === 查看更多 === */
.section-more { text-align: center; margin-top: 40px; }

/* ========================================
   后台管理样式
   ======================================== */
.admin-login-page { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light)); }
.admin-login-box { background: #fff; border-radius: var(--radius-lg); padding: 40px; width: 380px; max-width: 90%; box-shadow: var(--shadow-lg); }
.admin-login-header { text-align: center; margin-bottom: 28px; }
.admin-login-header h1 { font-size: 1.6rem; color: var(--color-primary); font-weight: 800; }
.admin-login-header p { font-size: 0.85rem; color: var(--color-text-light); margin-top: 4px; }
.admin-login-form { margin-bottom: 20px; }
.admin-login-back { display: block; text-align: center; font-size: 0.85rem; color: var(--color-text-light); }

.admin-body { background: var(--color-bg-light); }
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 220px; background: var(--color-primary); color: #fff; flex-shrink: 0;
  position: fixed; top: 0; left: 0; bottom: 0; z-index: 100; transition: var(--transition);
}
.admin-sidebar-header { padding: 20px; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.1); }
.admin-sidebar-header h2 { font-size: 1.2rem; font-weight: 800; }
.admin-sidebar-header span { font-size: 0.75rem; opacity: 0.6; }
.admin-nav { padding: 12px 0; }
.admin-nav a { display: block; padding: 12px 24px; color: rgba(255,255,255,0.7); font-size: 0.92rem; transition: var(--transition); }
.admin-nav a:hover, .admin-nav a.active { background: rgba(255,255,255,0.1); color: #fff; border-left: 3px solid var(--color-accent); }
.admin-main { flex: 1; margin-left: 220px; min-width: 0; }
.admin-topbar { background: #fff; padding: 0 24px; height: 56px; display: flex; align-items: center; gap: 16px; box-shadow: var(--shadow-sm); position: sticky; top: 0; z-index: 50; }
.admin-topbar h1 { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); }
.admin-toggle { font-size: 1.2rem; background: none; color: var(--color-primary); display: none; }
.admin-content { padding: 24px; }

/* 仪表盘 */
.dashboard-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 32px; }
.dash-stat-card { background: #fff; border-radius: var(--radius-lg); padding: 20px; display: flex; align-items: center; gap: 16px; box-shadow: var(--shadow-sm); position: relative; }
.dash-stat-icon { font-size: 2rem; }
.dash-stat-info { display: flex; flex-direction: column; }
.dash-stat-number { font-size: 1.8rem; font-weight: 800; color: var(--color-primary); }
.dash-stat-label { font-size: 0.83rem; color: var(--color-text-light); }
.dash-stat-link { position: absolute; right: 16px; bottom: 12px; font-size: 0.8rem; color: var(--color-accent); }
.dash-quick-actions, .dash-info { background: #fff; border-radius: var(--radius-lg); padding: 24px; margin-bottom: 20px; }
.dash-quick-actions h2, .dash-info h2 { font-size: 1.05rem; color: var(--color-primary); margin-bottom: 16px; }
.dash-actions-grid { display: flex; gap: 12px; flex-wrap: wrap; }
.dash-action-btn { padding: 10px 24px; background: var(--color-bg-light); border-radius: var(--radius); font-size: 0.9rem; color: var(--color-primary); transition: var(--transition); }
.dash-action-btn:hover { background: var(--color-accent); color: #fff; }
.dash-tips li { padding: 6px 0; font-size: 0.88rem; color: var(--color-text-light); padding-left: 18px; position: relative; }
.dash-tips li::before { content: '•'; position: absolute; left: 0; color: var(--color-accent); }

/* 管理工具栏 */
.admin-toolbar { display: flex; justify-content: flex-end; margin-bottom: 20px; }

/* 管理表格 */
.admin-table-wrap { background: #fff; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); overflow-x: auto; }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th { background: var(--color-bg-light); padding: 12px 16px; text-align: left; font-size: 0.85rem; font-weight: 600; color: var(--color-text); white-space: nowrap; }
.admin-table td { padding: 12px 16px; border-top: 1px solid var(--color-border); font-size: 0.88rem; }
.admin-table .td-title { max-width: 300px; }
.admin-table .td-title a { color: var(--color-primary); }
.admin-table .td-title a:hover { color: var(--color-accent); }
.admin-table .td-actions { display: flex; gap: 8px; white-space: nowrap; }
.admin-table .td-message { max-width: 200px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.admin-table .empty-row { text-align: center; padding: 40px; color: var(--color-text-light); }
.admin-table .row-unread { background: rgba(200,150,30,0.04); }
.tag { display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 0.78rem; background: var(--color-bg-gray); color: var(--color-text-light); }
.status { padding: 2px 10px; border-radius: 12px; font-size: 0.78rem; }
.status-on { background: rgba(16,185,129,0.1); color: var(--color-success); }
.status-off { background: rgba(239,68,68,0.1); color: var(--color-danger); }

/* 管理表单 */
.admin-form { background: #fff; border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow-sm); max-width: 800px; }
.form-section-title { font-size: 1.1rem; font-weight: 700; color: var(--color-primary); margin-bottom: 16px; padding-bottom: 10px; border-bottom: 2px solid var(--color-accent); }
.image-preview { margin-bottom: 12px; }

/* === 响应式 === */
@media (max-width: 992px) {
  .nav-list { display: none; position: absolute; top: var(--header-height); left: 0; right: 0; background: #fff; flex-direction: column; padding: 12px; box-shadow: var(--shadow); }
  .nav-list.show { display: flex; }
  .menu-toggle { display: flex; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .about-content, .about-detail { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .news-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .qual-grid { grid-template-columns: repeat(2, 1fr); }
  .culture-grid { grid-template-columns: repeat(2, 1fr); }
  .service-detail-row { grid-template-columns: 1fr; }
  .service-detail-row.reverse .service-detail-image { order: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { position: static; }
  .dashboard-stats { grid-template-columns: repeat(2, 1fr); }
  .admin-main { margin-left: 0; }
  .admin-sidebar { transform: translateX(-100%); }
  .admin-sidebar.show { transform: translateX(0); }
  .admin-toggle { display: block; }
  .news-list-item { grid-template-columns: 1fr; }
  .news-list-image { width: 100%; height: 180px; }
}

@media (max-width: 600px) {
  .hero { height: 380px; }
  .hero-title { font-size: 1.6rem; }
  .hero-subtitle { font-size: 0.95rem; }
  .stats-grid { grid-template-columns: 1fr; }
  .services-grid, .projects-grid, .news-grid, .qual-grid, .culture-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .section-title { font-size: 1.4rem; }
  .page-banner { height: 180px; }
  .page-banner-title { font-size: 1.5rem; }
  .dashboard-stats { grid-template-columns: 1fr; }
  .footer-bottom-inner { flex-direction: column; gap: 6px; text-align: center; }
}