/* 中广来客 - 主样式表 v2.0 */
:root {
  --primary: #1a56db;
  --primary-dark: #1e3a5f;
  --primary-light: #3b82f6;
  --accent: #f59e0b;
  --text: #333;
  --text-light: #666;
  --bg: #fff;
  --bg-gray: #f8fafc;
  --border: #e5e7eb;
  --radius: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif; color: var(--text); line-height: 1.6; font-size: 16px; }
a { color: var(--primary); text-decoration: none; }
a:hover { color: var(--primary-dark); }
img { max-width: 100%; height: auto; }
ul, ol { list-style: none; }
input, textarea, select, button { font-family: inherit; font-size: inherit; outline: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* Utility */
.text-center { text-align: center; }
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }

/* Buttons */
.btn { display: inline-block; padding: 12px 24px; border-radius: var(--radius); font-size: 16px; font-weight: 600; cursor: pointer; border: 2px solid transparent; transition: all .3s; text-align: center; }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); color: #fff; transform: translateY(-1px); box-shadow: 0 4px 15px rgba(30,58,95,0.3); }
.btn-outline { background: transparent; border: 2px solid var(--primary); color: var(--primary); }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-block { width: 100%; display: block; }
.btn-sm { padding: 8px 16px; font-size: 14px; }

/* Header */
.header { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 1000; box-shadow: 0 2px 10px rgba(0,0,0,.05); }
.header .container { display: flex; align-items: center; justify-content: space-between; height: 70px; gap: 20px; }
.logo { font-size: 24px; font-weight: 800; color: var(--primary-dark); flex-shrink: 0; }
.nav { display: flex; gap: 5px; }
.nav a { color: var(--text); font-size: 15px; padding: 8px 14px; border-radius: 4px; transition: all .2s; white-space: nowrap; }
.nav a:hover, .nav a.active { color: var(--primary); background: #f0f4f9; }
.header-actions { display: flex; align-items: center; gap: 15px; flex-shrink: 0; }
.header-phone { font-weight: 700; color: var(--primary-dark); white-space: nowrap; }
.mobile-menu-toggle { display: none; background: none; border: none; font-size: 28px; cursor: pointer; padding: 5px; color: var(--text); }

/* Hero Slider */
.hero-slider { background: var(--primary-dark); color: #fff; min-height: 420px; display: flex; align-items: center; position: relative; overflow: hidden; }
.slider-container { width: 100%; }
.slide-item { display: none; }
.slide-item.active { display: block; }
.slide-content { padding: 80px 0; text-align: center; }
.slide-content h2 { font-size: 42px; margin-bottom: 20px; font-weight: 800; }
.slide-content p { font-size: 18px; margin-bottom: 30px; opacity: .9; }
.slide-content .btn { background: #fff; color: var(--primary-dark); border-color: #fff; }
.slide-content .btn:hover { background: #f0f4f9; color: var(--primary-dark); }
.slider-dots { position: absolute; bottom: 20px; left: 50%; transform: translateX(-50%); display: flex; gap: 8px; }
.slider-dots span { width: 10px; height: 10px; border-radius: 50%; background: rgba(255,255,255,.4); cursor: pointer; }
.slider-dots span.active { background: #fff; }

/* Sections */
.section { padding: 70px 0; position: relative; overflow: hidden; }
.section > .container { position: relative; z-index: 1; }
.section:nth-child(even) { background: var(--bg-gray); }
.section-title { text-align: center; font-size: 30px; font-weight: 700; margin-bottom: 45px; color: var(--primary-dark); position: relative; }
.section-title::after { content: ''; display: block; width: 60px; height: 3px; background: linear-gradient(90deg, var(--primary-dark), var(--primary-light)); margin: 12px auto 0; border-radius: 2px; }

/* Grid */
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

/* Advantage Cards */
.advantage-card { text-align: center; padding: 35px 25px; background: #fff; border-radius: 12px; border: 1px solid var(--border); transition: all .3s; }
.advantage-card:hover { transform: translateY(-5px); box-shadow: 0 10px 40px rgba(30,58,95,.08); }
.advantage-icon { font-size: 42px; margin-bottom: 15px; }
.advantage-card h3 { font-size: 18px; margin-bottom: 10px; color: var(--primary-dark); }
.advantage-card p { color: #777; font-size: 14px; }

/* Product Cards */
.product-card { background: #fff; border-radius: 12px; padding: 35px 25px; text-align: center; border: 1px solid var(--border); position: relative; overflow: hidden; transition: all .3s; }
.product-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; }
.product-blue::before { background: linear-gradient(90deg, #1e3a5f, #5a8dbf); }
.product-purple::before { background: linear-gradient(90deg, #7c3aed, #a78bfa); }
.product-dark::before { background: linear-gradient(90deg, #1f2937, #4b5563); }
.product-gold::before { background: linear-gradient(90deg, #b8860b, #f0c040); }
.product-card:hover { transform: translateY(-5px); box-shadow: 0 10px 40px rgba(30,58,95,.08); }
.product-card h3 { font-size: 22px; color: var(--primary-dark); margin-bottom: 8px; }
.product-subtitle { color: #888; font-size: 14px; margin-bottom: 15px; }
.product-price { font-size: 28px; font-weight: 800; color: #d35400; margin: 15px 0; }
.product-original { text-decoration: line-through; color: #aaa; font-size: 14px; }
.product-period { color: #666; font-size: 14px; background: var(--bg-gray); display: inline-block; padding: 4px 16px; border-radius: 20px; margin: 10px 0; }
.product-actions { display: flex; gap: 10px; justify-content: center; margin-top: 20px; flex-wrap: wrap; }

/* Case Grid */
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.case-card { background: #fff; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); transition: all .3s; }
.case-card:hover { transform: translateY(-3px); box-shadow: 0 8px 30px rgba(30,58,95,.08); }
.case-image { height: 200px; background: var(--bg-gray); display: flex; align-items: center; justify-content: center; overflow: hidden; }
.case-image img { width: 100%; height: 100%; object-fit: cover; }
.case-info { padding: 18px 20px; }
.case-info h3 { font-size: 16px; margin-bottom: 6px; }
.case-info h3 a { color: var(--primary-dark); }
.case-info p { color: #888; font-size: 13px; }

/* News Grid */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.news-item { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 25px; transition: all .3s; }
.news-item:hover { box-shadow: 0 4px 20px rgba(30,58,95,.06); }
.news-item h3 { font-size: 17px; margin-bottom: 10px; }
.news-item h3 a { color: var(--primary-dark); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-meta { color: #aaa; font-size: 13px; margin-bottom: 10px; }
.news-item p { color: #777; font-size: 14px; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* Process Steps */
.process-steps { display: flex; justify-content: center; gap: 15px; flex-wrap: wrap; }
.step { text-align: center; flex: 0 0 150px; }
.step-num { display: inline-flex; width: 50px; height: 50px; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; border-radius: 50%; align-items: center; justify-content: center; font-size: 20px; font-weight: 700; margin-bottom: 10px; }
.step h4 { font-size: 15px; color: var(--text); }

/* City Tags */
.city-group { margin-bottom: 20px; }
.city-group h3 { font-size: 16px; color: var(--primary-dark); margin-bottom: 10px; }
.city-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.city-tag { display: inline-block; padding: 6px 16px; background: var(--bg-gray); border: 1px solid var(--border); border-radius: 20px; font-size: 14px; color: #555; transition: all .2s; }
.city-tag:hover { background: var(--primary-dark); color: #fff; border-color: var(--primary-dark); }

/* Lead Form */
.lead-form-section { background: var(--bg-gray); }
.lead-form { max-width: 650px; margin: 0 auto; background: #fff; padding: 35px; border-radius: 12px; box-shadow: 0 5px 30px rgba(0,0,0,.05); }
.form-row { display: flex; gap: 15px; margin-bottom: 15px; }
.form-row > * { flex: 1; }
.lead-form input, .lead-form select, .lead-form textarea { width: 100%; padding: 12px 16px; border: 1px solid var(--border); border-radius: 6px; font-size: 15px; transition: border .2s; background: #fafbfc; }
.lead-form input:focus, .lead-form select:focus, .lead-form textarea:focus { border-color: var(--primary); background: #fff; box-shadow: 0 0 0 3px rgba(26,86,219,.08); }
.lead-form textarea { resize: vertical; min-height: 80px; }

/* Footer */
.footer { background: var(--primary-dark); color: rgba(255,255,255,.8); padding: 50px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 2fr; gap: 40px; }
.footer-col h4 { color: #fff; font-size: 17px; margin-bottom: 18px; }
.footer-col p, .footer-col a { color: rgba(255,255,255,.7); font-size: 14px; margin-bottom: 8px; display: block; }
.footer-col a:hover { color: #fff; }
.footer .city-group { margin-bottom: 10px; }
.footer .city-group strong { color: #ddd; font-size: 13px; }
.footer .city-group a { display: inline; margin-right: 8px; font-size: 13px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; margin-top: 40px; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,.5); }

/* Float Bar */
.float-bar { position: fixed; right: 20px; bottom: 120px; z-index: 999; display: flex; flex-direction: column; gap: 8px; }
.float-item { width: 48px; height: 48px; background: var(--primary); color: #fff; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 20px; cursor: pointer; transition: all .3s; box-shadow: 0 2px 10px rgba(30,58,95,.3); border: none; }
.float-item:hover { background: var(--primary-dark); transform: scale(1.1); }

/* Detail Pages */
.detail-header { background: var(--bg-gray); padding: 40px 0; border-bottom: 1px solid var(--border); }
.detail-header h1 { font-size: 32px; color: var(--primary-dark); margin-bottom: 10px; }
.detail-content { padding: 50px 0; }
.detail-content .content-body { max-width: 800px; margin: 0 auto; }
.detail-content p { margin-bottom: 16px; line-height: 1.8; }
.detail-content h2, .detail-content h3 { color: var(--primary-dark); margin: 30px 0 15px; }

/* Breadcrumb */
.breadcrumb { padding: 15px 0; font-size: 14px; color: #888; }
.breadcrumb a { color: var(--primary); }

/* Faq */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
.faq-question { padding: 18px 22px; font-weight: 600; cursor: pointer; display: flex; justify-content: space-between; align-items: center; color: var(--primary-dark); background: var(--bg-gray); }
.faq-answer { padding: 18px 22px; color: var(--text-light); line-height: 1.8; display: none; }
.faq-item.active .faq-answer { display: block; }

/* Pagination */
.pagination { display: flex; justify-content: center; gap: 5px; margin-top: 30px; }
.pagination a, .pagination span { padding: 8px 14px; border: 1px solid var(--border); border-radius: 4px; color: #555; font-size: 14px; }
.pagination a:hover { background: var(--primary); color: #fff; border-color: var(--primary); }
.pagination .current { background: var(--primary); color: #fff; border-color: var(--primary); }

/* GEO Pages */
.geo-header { background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; padding: 50px 0; text-align: center; }
.geo-header h1 { font-size: 34px; margin-bottom: 10px; }
.geo-header p { opacity: .9; }
.geo-content { padding: 50px 0; }

/* About Page */
.about-content { max-width: 800px; margin: 0 auto; }
.about-content h2 { color: var(--primary-dark); margin: 30px 0 15px; font-size: 22px; }
.about-content p { margin-bottom: 15px; line-height: 1.8; color: #555; }

/* Contact Page */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info h3 { color: var(--primary-dark); margin-bottom: 20px; font-size: 20px; }
.contact-info p { margin-bottom: 12px; color: #555; font-size: 15px; }

/* Popup */
.popup-overlay { position: fixed; top: 0; left: 0; right: 0; bottom: 0; background: rgba(0,0,0,.6); z-index: 2000; display: flex; align-items: center; justify-content: center; }
.popup-box { background: #fff; padding: 40px; border-radius: 12px; max-width: 400px; width: 90%; position: relative; }
.popup-box h3 { margin-bottom: 10px; color: var(--primary-dark); font-size: 20px; }
.popup-box p { color: var(--text-light); margin-bottom: 20px; }
.popup-box input, .popup-box select { width: 100%; padding: 10px; margin-bottom: 12px; border: 1px solid var(--border); border-radius: 6px; }
.popup-close { position: absolute; top: 10px; right: 15px; background: none; border: none; font-size: 22px; cursor: pointer; color: #999; }
.popup-close:hover { color: #333; }

/* ===== v3.0 视觉升级 ===== */
.logo { display: flex; align-items: center; gap: 10px; }
.logo-img { height: 32px; width: auto; }
.hero-slider { min-height: 520px; }
.slide-bg { position: relative; min-height: 520px; background-size: cover; background-position: center; display: flex; align-items: center; }
.slide-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,35,70,.88), rgba(26,86,219,.55)); }
.slide-content { position: relative; z-index: 2; color: #fff; max-width: 720px; padding: 90px 0; text-align: left; }
.slide-tag { display: inline-block; background: rgba(255,255,255,.15); border: 1px solid rgba(255,255,255,.25); padding: 6px 14px; border-radius: 20px; font-size: 13px; margin-bottom: 18px; }
.slide-content h2 { font-size: 46px; line-height: 1.2; margin-bottom: 16px; }
.slide-content p { font-size: 18px; opacity: .92; margin-bottom: 28px; }
.slide-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.btn-light { color: #fff !important; border-color: rgba(255,255,255,.7) !important; }
.btn-light:hover { background: #fff !important; color: var(--primary-dark) !important; }
.stats-bar { background: linear-gradient(90deg, #0f2346, #1a56db); color: #fff; padding: 28px 0; margin-top: -2px; }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; text-align: center; }
.stat-item strong { display: block; font-size: 32px; font-weight: 800; }
.stat-item span { font-size: 14px; opacity: .85; }
.page-hero { position: relative; min-height: 280px; background-size: cover; background-position: center; display: flex; align-items: center; }
.page-hero-sm { min-height: 220px; }
.page-hero-overlay { position: absolute; inset: 0; background: linear-gradient(135deg, rgba(15,35,70,.85), rgba(26,86,219,.5)); }
.page-hero-content { position: relative; z-index: 2; color: #fff; padding: 60px 0; }
.page-hero-content h1 { font-size: 36px; margin-bottom: 10px; }
.page-hero-content p { font-size: 17px; opacity: .9; }
.about-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 40px; align-items: start; }
.about-images { display: grid; gap: 16px; }
.about-img-main { border-radius: 14px; box-shadow: 0 12px 40px rgba(0,0,0,.12); width: 100%; height: 280px; object-fit: cover; }
.about-img-sub { border-radius: 14px; width: 100%; height: 180px; object-fit: cover; }
.check-list li { position: relative; padding-left: 22px; margin-bottom: 10px; color: #555; }
.check-list li::before { content: '✓'; position: absolute; left: 0; color: var(--primary); font-weight: 700; }
.news-item.has-cover { padding: 0; overflow: hidden; }
.news-cover { height: 160px; overflow: hidden; }
.news-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s; }
.news-item:hover .news-cover img { transform: scale(1.05); }
.news-body { padding: 20px; }
.contact-side-img { width: 100%; height: 200px; object-fit: cover; border-radius: 12px; margin-bottom: 20px; }
.contact-form-wrap { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: 0 8px 30px rgba(0,0,0,.04); }
.process-banner { width: 100%; max-height: 320px; object-fit: cover; border-radius: 14px; margin-bottom: 30px; }
.product-card { box-shadow: 0 4px 24px rgba(30,58,95,.06); }
.product-thumb { height: 140px; overflow: hidden; border-radius: 8px 8px 0 0; margin: -35px -25px 20px; }
.product-thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-price-lg { font-size: 32px; font-weight: 800; color: #d35400; margin-bottom: 10px; }
.product-detail-layout { display: grid; grid-template-columns: 1fr 300px; gap: 40px; max-width: 960px; margin: 0 auto; }
.product-detail-aside { position: sticky; top: 90px; }
.detail-layout { display: grid; grid-template-columns: 1fr 280px; gap: 40px; max-width: 960px; margin: 0 auto; }
.detail-aside { position: sticky; top: 90px; }
.detail-cover-img { width: 100%; border-radius: 12px; margin-bottom: 16px; box-shadow: 0 8px 30px rgba(0,0,0,.08); }
.detail-meta-card { background: var(--bg-gray); border-radius: 10px; padding: 18px; border: 1px solid var(--border); }
.detail-meta-card p { display: flex; justify-content: space-between; margin-bottom: 10px; font-size: 14px; }
.detail-meta-card p:last-child { margin-bottom: 0; }
.breadcrumb-light a, .breadcrumb-light span { color: rgba(255,255,255,.85); }
.breadcrumb-light a:hover { color: #fff; }
.client-quote { background: #f8fafc; padding: 24px; border-left: 4px solid var(--primary); border-radius: 0 10px 10px 0; margin-top: 24px; color: #555; }
.result-badge { display: inline-block; background: linear-gradient(90deg, var(--primary-dark), var(--primary)); color: #fff; padding: 8px 18px; border-radius: 20px; font-size: 14px; margin-bottom: 20px; }
.filter-bar select { padding: 10px 16px; border: 1px solid var(--border); border-radius: 8px; background: #fff; font-size: 14px; min-width: 160px; }
.advantage-card { background: linear-gradient(180deg, #fff, #f8fbff); }
.case-result-tag { display: inline-block; margin-top: 8px; padding: 4px 10px; background: rgba(30,58,95,.08); color: var(--primary-dark); border-radius: 12px; font-size: 12px; }
.testimonial-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.testimonial-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 28px; box-shadow: 0 8px 30px rgba(30,58,95,.05); }
.testimonial-text { font-size: 15px; line-height: 1.8; color: #444; margin-bottom: 18px; min-height: 72px; }
.testimonial-meta { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: var(--text-light); border-top: 1px solid var(--border); padding-top: 14px; }
.testimonial-meta strong { color: var(--primary-dark); }
.testimonial-result { margin-top: 12px; font-size: 13px; color: var(--primary); font-weight: 600; }
.faq-list-compact { max-width: 900px; }

/* ===== v4.0 全面美化 ===== */
body { background: #f8fafc; }
/* ===== v9.6 GEO 主题覆盖 style.css 变量 ===== */
body.theme-geo { background: transparent !important; }
.theme-geo .site-body::before,
.theme-geo .site-body::after,
.theme-geo .main-content .section::before,
.theme-geo .main-content .detail-content::before,
.theme-geo .lead-form-section::before,
.theme-geo .footer::before,
.theme-geo .knowledge-section::before { display: none !important; }
body.theme-geo {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #60a5fa;
  --text: #c8d9ef;
  --text-light: #7a9cc4;
  --bg-gray: #0f2547;
  --border: rgba(59, 130, 246, 0.18);
}
body.theme-geo a { color: var(--primary-light); }
body.theme-geo a:hover { color: #f0f7ff; }
.theme-geo .advantage-card h3 { color: #f0f7ff; }
.theme-geo .section-title { color: #f0f7ff; }
.theme-geo .case-result-tag { background: rgba(37, 99, 235, 0.14); color: #93c5fd; }
.theme-geo .step-num { background: linear-gradient(135deg, #1e40af, #2563eb); }
.theme-geo .city-tag:hover { background: linear-gradient(135deg, #1e40af, #2563eb); border-color: transparent; }

.site-body { position: relative; }
.site-body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--page-bg, url('/static/images/content/bg-main.jpg')) center/cover no-repeat fixed;
}
.site-body::after {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background: rgba(248,250,252,.82);
  pointer-events: none;
}
.main-content { position: relative; }
/* 中间白色内容区 - 交替背景图 */
.main-content .section:nth-of-type(odd) {
  background: rgba(255,255,255,.9);
}
.main-content .section:nth-of-type(even) {
  background: rgba(248,250,252,.92);
}
.main-content .section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: center/cover no-repeat;
  z-index: 0;
  pointer-events: none;
}
.main-content .section:nth-of-type(odd)::before {
  background-image: url('/static/images/content/bg-content-light.jpg');
  opacity: .18;
}
.main-content .section:nth-of-type(even)::before {
  background-image: url('/static/images/content/bg-content-warm.jpg');
  opacity: .14;
}
.main-content .detail-content {
  position: relative;
  background: rgba(255,255,255,.92);
}
.main-content .detail-content::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/static/images/content/bg-content-light.jpg') center/cover no-repeat;
  opacity: .1;
  z-index: 0;
  pointer-events: none;
}
.main-content .detail-content > .container { position: relative; z-index: 1; }
.lead-form-section { background: rgba(255,255,255,.94) !important; }
.lead-form-section::before {
  background-image: url('/static/images/content/bg-content-warm.jpg') !important;
  opacity: .12 !important;
}
.logo { display: flex; align-items: center; gap: 10px; }
.logo-text { font-size: 22px; font-weight: 800; color: var(--primary-dark); }
.logo-img { height: 36px; width: 36px; object-fit: contain; flex-shrink: 0; }
.logo-no-img .logo-text { padding-left: 0; }
.logo-no-img::before {
  content: '';
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #1e3a5f, #1a56db);
  flex-shrink: 0;
}
.img-broken { display: none !important; }
.page-hero, .slide-bg { background-color: #1e3a5f; }
.bg-fallback { background-color: #1e3a5f; }
.footer { position: relative; overflow: hidden; }
.footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/static/images/content/bg-footer.jpg') center/cover no-repeat;
  opacity: .15;
  z-index: 0;
}
.footer .container { position: relative; z-index: 1; }
.section.has-bg { position: relative; }
.section.has-bg::before {
  opacity: .22 !important;
}
.header { backdrop-filter: blur(8px); background: rgba(255,255,255,.96); }
.section-desc { text-align: center; color: #888; font-size: 16px; margin: -30px auto 40px; max-width: 560px; }
.cta-banner { background: linear-gradient(135deg, #0f2346 0%, #1a56db 60%, #3b82f6 100%); color: #fff; padding: 50px 0; }
.cta-banner-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta-banner h2 { font-size: 28px; margin-bottom: 8px; }
.cta-banner p { opacity: .9; font-size: 16px; }
.btn-light-lg { display: inline-block; padding: 14px 32px; background: #fff; color: var(--primary-dark); border-radius: 8px; font-weight: 700; font-size: 16px; transition: all .3s; white-space: nowrap; }
.btn-light-lg:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(0,0,0,.2); color: var(--primary-dark); }
.btn-lg { padding: 14px 36px; font-size: 17px; }
.case-card { box-shadow: 0 4px 20px rgba(30,58,95,.06); }
.case-card:hover { box-shadow: 0 12px 40px rgba(30,58,95,.12); }
.news-item { border-radius: 12px; overflow: hidden; box-shadow: 0 2px 16px rgba(30,58,95,.05); }
.news-item.has-cover { border: none; }
.news-cover { display: block; }
.geo-intro-card { background: rgba(255,255,255,.95); border-radius: 14px; padding: 32px; border: 1px solid var(--border); box-shadow: 0 4px 24px rgba(30,58,95,.05); margin-bottom: 40px; }
.geo-intro-card h2 { color: var(--primary-dark); font-size: 24px; margin-bottom: 12px; }
.geo-intro-card p { color: #666; line-height: 1.8; }
.geo-block { margin-bottom: 48px; }
.geo-block-title { font-size: 20px; color: var(--primary-dark); margin-bottom: 20px; padding-left: 14px; border-left: 4px solid var(--primary); }
.lead-form-card { max-width: 680px; margin: 0 auto; background: #fff; border-radius: 16px; padding: 36px; box-shadow: 0 8px 40px rgba(30,58,95,.08); border: 1px solid var(--border); }
.lead-form-header { text-align: center; margin-bottom: 24px; }
.lead-form-header h3 { font-size: 22px; color: var(--primary-dark); margin-bottom: 6px; }
.lead-form-header p { color: #888; font-size: 14px; }
.lead-form-embed { background: var(--bg-gray); }
.lead-form-inline { box-shadow: none; padding: 0; background: transparent; }
.contact-info-card { background: var(--bg-gray); border-radius: 10px; padding: 16px 20px; margin-bottom: 12px; }
.contact-info-card strong { color: var(--primary-dark); display: block; margin-bottom: 4px; font-size: 13px; }
.knowledge-section { background: rgba(240,244,255,.92) !important; }
.knowledge-section::before {
  background-image: url('/static/images/content/bg-section.jpg') !important;
  opacity: .16 !important;
}
.process .step { background: #fff; border-radius: 12px; padding: 20px 16px; border: 1px solid var(--border); box-shadow: 0 2px 12px rgba(30,58,95,.04); }
.product-card h2, .product-card h3 { margin-top: 0; }
.product-card .product-thumb + h2, .product-card .product-thumb + h3 { margin-top: 0; }
.product-benefits-box { background: #f0f4ff; border-radius: 10px; padding: 16px 20px; margin: 20px 0; border-left: 4px solid var(--primary); }
.product-benefits-box strong { color: var(--primary-dark); display: block; margin-bottom: 6px; }
.product-service-list { text-align: left; margin-top: 10px; }
.timeline { max-width: 700px; margin: 0 auto; }
.timeline-item { display: flex; gap: 20px; align-items: flex-start; padding: 18px 0; border-bottom: 1px solid var(--border); }
.timeline-item:last-child { border-bottom: none; }
.timeline-year { flex-shrink: 0; background: linear-gradient(135deg, var(--primary-dark), var(--primary)); color: #fff; padding: 6px 14px; border-radius: 20px; font-weight: 700; font-size: 14px; }
.timeline-item p { margin: 4px 0 0; color: #555; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .case-grid, .news-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav { display: none; position: absolute; top: 70px; left: 0; right: 0; background: #fff; flex-direction: column; padding: 15px; border-bottom: 1px solid var(--border); box-shadow: 0 5px 15px rgba(0,0,0,.08); z-index: 999; }
  .nav.open { display: flex; }
  .nav a { padding: 12px 14px; }
  .header-actions { gap: 10px; }
  .header-phone { font-size: 13px; }
  .mobile-menu-toggle { display: block; }
  .slide-content h2 { font-size: 28px; }
  .grid-4, .grid-3, .case-grid, .news-grid, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .form-row { flex-direction: column; }
  .section-title { font-size: 24px; }
  .lead-form { padding: 25px 20px; }
  .geo-header h1 { font-size: 24px; }
  .process-steps { justify-content: center; }
  .stats-grid, .about-grid { grid-template-columns: 1fr; }
  .detail-layout, .product-detail-layout { grid-template-columns: 1fr; }
  .detail-aside, .product-detail-aside { position: static; }
  .slide-content { text-align: center; margin: 0 auto; }
  .slide-content h2 { font-size: 30px; }
  .cta-banner-inner { text-align: center; justify-content: center; }
}

/* ===== v5.0 精致化升级 ===== */
:root {
  --shadow-sm: 0 2px 8px rgba(15,35,70,.06);
  --shadow-md: 0 8px 30px rgba(15,35,70,.08);
  --shadow-lg: 0 16px 48px rgba(15,35,70,.12);
  --radius-lg: 16px;
}
.header { transition: box-shadow .3s, background .3s; }
.header.is-scrolled { box-shadow: 0 4px 24px rgba(15,35,70,.1); background: rgba(255,255,255,.98); }
.logo:hover .logo-text { color: var(--primary); }
.nav a { position: relative; font-weight: 500; }
.nav a::after {
  content: '';
  position: absolute;
  left: 14px; right: 14px; bottom: 4px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary-dark), var(--primary-light));
  border-radius: 2px;
  transform: scaleX(0);
  transition: transform .25s;
}
.nav a:hover::after, .nav a.active::after { transform: scaleX(1); }
.nav a.active { color: var(--primary); background: rgba(26,86,219,.06); font-weight: 600; }
.section-title { font-size: 32px; letter-spacing: .5px; }
.section-title::after { width: 48px; height: 4px; border-radius: 4px; }
.advantage-card, .product-card, .case-card, .news-item, .testimonial-card {
  border-radius: var(--radius-lg);
  transition: transform .35s cubic-bezier(.4,0,.2,1), box-shadow .35s;
}
.advantage-card:hover, .product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.case-card .case-image { position: relative; }
.case-card .case-image::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(15,35,70,.25));
  opacity: 0;
  transition: opacity .3s;
}
.case-card:hover .case-image::after { opacity: 1; }
.content-body { line-height: 1.9; color: #444; font-size: 16px; }
.content-body h2, .content-body h3 { margin-top: 28px; margin-bottom: 14px; padding-left: 12px; border-left: 4px solid var(--primary); }
.content-body ul, .content-body ol { margin: 12px 0 20px 20px; }
.content-body ul li, .content-body ol li { list-style: disc; margin-bottom: 8px; color: #555; }
.content-body ol li { list-style: decimal; }
.detail-main, .product-detail-main {
  background: rgba(255,255,255,.95);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.float-bar .float-item { backdrop-filter: blur(4px); }
.float-bar .float-item:hover { box-shadow: var(--shadow-md); }
.footer-col h4 { position: relative; padding-bottom: 10px; }
.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 32px; height: 2px;
  background: rgba(255,255,255,.4);
  border-radius: 2px;
}
.popup-box { border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); }
.faq-item { border-radius: 12px; transition: box-shadow .2s; }
.faq-item.active { box-shadow: var(--shadow-sm); }
.faq-item.active .faq-question { background: #fff; color: var(--primary); }
.pagination a, .pagination span { border-radius: 8px; transition: all .2s; }
.filter-bar { background: rgba(255,255,255,.9); border-radius: 12px; padding: 16px 20px; border: 1px solid var(--border); }
.empty-state { text-align: center; padding: 60px 20px; color: #999; }
.empty-state::before { content: '📭'; display: block; font-size: 48px; margin-bottom: 12px; opacity: .6; }