/* ============================================
   CharacterFish Theme - 1:1复刻 bj.wjruanjian.com 风格
   ============================================ */

/* Reset */
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: Microsoft YaHei, PingFang SC, Hiragino Sans GB, sans-serif; color: #333; line-height: 1.6; background: #fff; overflow-x: hidden; }
a { text-decoration: none; color: inherit; }
ul, li { list-style: none; }
img { max-width: 100%; }
.clearfix::after { content: ""; display: block; clear: both; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }

/* Header */
.ai-header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.08); height: 70px; }
.ai-nav-wrap { max-width: 1200px; margin: 0 auto; padding: 0 15px; display: flex; align-items: center; justify-content: space-between; height: 70px; }
.ai-logo { display: flex; align-items: center; gap: 12px; }
.ai-logo-text { font-size: 18px; font-weight: 600; color: #333; }
.ai-nav-list { display: flex; align-items: center; gap: 0; }
.ai-nav-listitem { display: block; padding: 0 20px; height: 70px; line-height: 70px; font-size: 15px; color: #333; position: relative; transition: color 0.3s; }
.ai-nav-listitem:hover, .ai-nav-listitem.cur { color: #1890ff; }
.ai-nav-listitem.cur::after { content: ""; position: absolute; bottom: 0; left: 20px; right: 20px; height: 3px; background: #1890ff; }

/* Banner */
.ai-banner-wrap { margin-top: 70px; position: relative; overflow: hidden; }
.ai-banner-frame { position: relative; }
.banner_list { position: relative; display: none; }
.banner_list.active { display: block; }
.ai-banner-bg { width: 100%; height: 600px; background: linear-gradient(135deg, #001529 0%, #003a70 50%, #0050b3 100%); display: flex; align-items: center; justify-content: center; position: relative; overflow: hidden; }
.ai-banner-bg::before { content: ""; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v2H24v-2h12zM36 24v2H24v-2h12z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat; }
.ai-banner-content { position: relative; z-index: 2; text-align: center; color: #fff; max-width: 800px; padding: 0 20px; }
.ai-banner-content h1 { font-size: 48px; font-weight: 700; margin-bottom: 20px; }
.ai-banner-content h1 span { color: #40a9ff; }
.ai-banner-content p { font-size: 18px; color: rgba(255,255,255,0.8); margin-bottom: 30px; line-height: 1.8; }
.ai-banner-btns { display: flex; gap: 20px; justify-content: center; }
.ai-banner-btn { display: inline-block; padding: 14px 40px; border-radius: 4px; font-size: 16px; font-weight: 500; transition: all 0.3s; }
.ai-banner-btn-primary { background: #1890ff; color: #fff; }
.ai-banner-btn-primary:hover { background: #096dd9; transform: translateY(-2px); box-shadow: 0 4px 12px rgba(24,144,255,0.4); }
.ai-banner-btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.5); }
.ai-banner-btn-outline:hover { background: rgba(255,255,255,0.1); border-color: #fff; }
.ai-banner-pages { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 10; }
.ai-banner-page { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; transition: all 0.3s; }
.ai-banner-page.active { background: #1890ff; }

/* Business Section */
.business { padding: 80px 0; background: #fff; }
.business .box { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.txa_c { text-align: center; }
.title-big { font-size: 36px; font-weight: 600; color: #1890ff; margin-bottom: 12px; }
.title-small { font-size: 14px; color: #666; margin-bottom: 50px; line-height: 1.8; }
.items { display: flex; justify-content: center; gap: 40px; flex-wrap: wrap; }
.items li { width: 180px; text-align: center; padding: 20px; transition: all 0.3s; cursor: pointer; }
.items li:hover { transform: translateY(-5px); }
.items li .item-icon { width: 100px; height: 100px; margin: 0 auto 20px; border: 2px solid #1890ff; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.3s; }
.items li:hover .item-icon { background: #1890ff; }
.items li:hover .item-icon svg { stroke: #fff; }
.items li h4 { font-size: 16px; font-weight: 500; color: #1890ff; }

/* Process Section */
.process-section { padding: 80px 0; background: #fff; }
.process-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.process-item { text-align: center; padding: 20px; }
.process-icon { width: 80px; height: 80px; margin: 0 auto 20px; border: 1px solid #ddd; border-radius: 50%; display: flex; align-items: center; justify-content: center; transition: all 0.3s; }
.process-item:hover .process-icon { border-color: #1890ff; }
.process-item h4 { font-size: 18px; font-weight: 600; color: #333; margin-bottom: 8px; }
.process-item p { font-size: 13px; color: #999; line-height: 1.6; }

/* Case Section */
.flow-case-con { padding: 80px 0; background: #f5f5f5; }
.con_rank_title { text-align: center; margin-bottom: 50px; }
.con_rank_title h2 { font-size: 36px; font-weight: 600; color: #333; margin-bottom: 12px; }
.con_rank_title p { font-size: 14px; color: #999; }
.case-tabs { display: flex; justify-content: center; gap: 10px; margin-bottom: 40px; }
.case-tabs-item { padding: 8px 24px; border-radius: 20px; font-size: 14px; color: #666; cursor: pointer; transition: all 0.3s; border: 1px solid #e8e8e8; }
.case-tabs-item.active, .case-tabs-item:hover { background: #1890ff; color: #fff; border-color: #1890ff; }
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.case-item { background: #fff; border-radius: 8px; overflow: hidden; transition: all 0.3s; }
.case-item:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.1); }
.case-item-img { height: 180px; background: linear-gradient(135deg, #e6f7ff 0%, #bae7ff 100%); display: flex; align-items: center; justify-content: center; }
.case-item-info { padding: 16px; }
.case-item-info h4 { font-size: 15px; font-weight: 600; color: #333; margin-bottom: 6px; }
.case-item-info p { font-size: 13px; color: #999; }

/* News Section */
.news-section { padding: 80px 0; background: #fff; }
.news-section .con_rank_title { margin-bottom: 50px; }
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 30px; }
.news-item { background: #fff; border-radius: 8px; overflow: hidden; border: 1px solid #e8e8e8; transition: all 0.3s; }
.news-item:hover { transform: translateY(-5px); box-shadow: 0 8px 25px rgba(0,0,0,0.08); border-color: #1890ff; }
.news-item-img { height: 200px; background: linear-gradient(135deg, #e6f7ff 0%, #bae7ff 100%); display: flex; align-items: center; justify-content: center; }
.news-item-content { padding: 24px; }
.news-item-date { font-size: 13px; color: #999; margin-bottom: 8px; }
.news-item h3 { font-size: 18px; font-weight: 600; color: #333; margin-bottom: 12px; line-height: 1.4; }
.news-item p { font-size: 14px; color: #666; line-height: 1.6; margin-bottom: 16px; }
.news-item a { color: #1890ff; font-size: 14px; font-weight: 500; }

/* Customer Section */
.customer-section { padding: 80px 0; background: #f5f5f5; }
.customer-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 20px; }
.customer-item { background: #fff; border-radius: 8px; padding: 30px 20px; text-align: center; transition: all 0.3s; }
.customer-item:hover { transform: translateY(-3px); box-shadow: 0 4px 15px rgba(0,0,0,0.08); }
.customer-item .cust-icon { font-size: 40px; margin-bottom: 12px; }
.customer-item h4 { font-size: 14px; color: #333; }

/* Contact Section */
.contact-section { padding: 80px 0; background: #fff; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.contact-info-list { display: flex; flex-direction: column; gap: 24px; }
.contact-info-item { display: flex; align-items: flex-start; gap: 16px; }
.contact-info-icon { width: 48px; height: 48px; background: #1890ff; border-radius: 8px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 20px; flex-shrink: 0; }
.contact-info-item h4 { font-size: 16px; font-weight: 600; color: #333; margin-bottom: 4px; }
.contact-info-item p { font-size: 14px; color: #666; }
.contact-form { background: #f5f5f5; border-radius: 8px; padding: 40px; }
.contact-form h3 { font-size: 24px; font-weight: 600; color: #333; margin-bottom: 24px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-bottom: 20px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: #333; margin-bottom: 8px; }
.form-group input, .form-group textarea { width: 100%; padding: 12px 16px; border: 1px solid #e8e8e8; border-radius: 4px; font-size: 14px; transition: all 0.3s; background: #fff; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: #1890ff; box-shadow: 0 0 0 2px rgba(24,144,255,0.1); }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-submit { width: 100%; padding: 14px; background: #1890ff; color: #fff; border: none; border-radius: 4px; font-size: 16px; font-weight: 500; cursor: pointer; transition: all 0.3s; }
.form-submit:hover { background: #096dd9; }

/* Footer */
.site-footer { background: #001529; padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.footer-brand h3 { font-size: 20px; font-weight: 600; color: #fff; margin-bottom: 16px; }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.6); line-height: 1.8; margin-bottom: 20px; }
.footer-column h4 { font-size: 16px; font-weight: 600; color: #fff; margin-bottom: 20px; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: rgba(255,255,255,0.6); font-size: 14px; transition: color 0.3s; }
.footer-links a:hover { color: #40a9ff; }
.footer-bottom { padding: 20px 0; text-align: center; }
.footer-bottom p { color: rgba(255,255,255,0.5); font-size: 14px; }
.footer-bottom a { color: rgba(255,255,255,0.6); text-decoration: none; }
.footer-bottom a:hover { color: #40a9ff; }

/* Page Header */
.page-header { background: linear-gradient(135deg, #001529 0%, #003a70 100%); padding: 140px 0 60px; text-align: center; }
.page-header h1 { font-size: 36px; font-weight: 600; color: #fff; margin-bottom: 12px; }
.page-header p { font-size: 16px; color: rgba(255,255,255,0.7); }
.page-content { padding: 60px 0; }
.page-content-inner { max-width: 900px; margin: 0 auto; }
.page-content-inner h2 { font-size: 24px; font-weight: 600; color: #333; margin-bottom: 16px; margin-top: 32px; }
.page-content-inner h2:first-child { margin-top: 0; }
.page-content-inner p { font-size: 15px; color: #666; line-height: 1.8; margin-bottom: 16px; }
.page-content-inner ul { margin-bottom: 16px; padding-left: 24px; }
.page-content-inner li { font-size: 15px; color: #666; line-height: 1.8; margin-bottom: 8px; }

/* Responsive */
@media (max-width: 1024px) {
    .process-grid { grid-template-columns: repeat(3, 1fr); }
    .case-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .customer-grid { grid-template-columns: repeat(3, 1fr); }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .contact-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .ai-nav-list { display: none; }
    .ai-banner-bg { height: 400px; }
    .ai-banner-content h1 { font-size: 28px; }
    .items { flex-direction: column; align-items: center; }
    .items li { width: 100%; max-width: 300px; }
    .process-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .customer-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}