/* 瑞宏诚科技 - 前台样式 */
:root{
  --primary:#0b4f8a;
  --primary-dark:#07365f;
  --accent:#e6a817;
  --bg:#f5f7fa;
  --text:#222;
  --muted:#6b7280;
  --line:#e5e7eb;
  --radius:10px;
  --shadow:0 2px 12px rgba(0,0,0,.06);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--text);background:#fff;line-height:1.7}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--accent)}
.container{width:min(1160px,92%);margin:0 auto}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-inner{display:flex;align-items:center;gap:24px;padding:14px 0;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{width:44px;height:44px;border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center;background:none}
.logo-mark-img{width:100%;height:100%;object-fit:cover;display:block}
.logo-text{font-size:20px;font-weight:700;color:var(--primary-dark);line-height:1.2}
.logo-text small{display:block;font-size:11px;font-weight:400;color:var(--muted)}
.main-nav{display:flex;gap:4px;flex:1}
.main-nav a{padding:8px 14px;border-radius:8px;color:var(--text);font-weight:500}
.main-nav a:hover{background:var(--bg)}
.main-nav a.active{color:var(--primary);background:#eaf2fb}
.nav-search{display:flex;border:1px solid var(--line);border-radius:20px;overflow:hidden}
.nav-search input{border:0;padding:8px 12px;width:190px;outline:none;font-size:14px}
.nav-search button{border:0;background:var(--primary);color:#fff;padding:0 14px;cursor:pointer}

/* Hero */
.hero{background:linear-gradient(rgba(7,54,95,.70),rgba(7,54,95,.58) 45%,rgba(11,79,138,.80)),url('../images/hero-bg.jpg') center/cover no-repeat;color:#fff;padding:88px 0;text-align:center}
.hero h1{font-size:38px;margin-bottom:10px}
.hero-sub{font-size:20px;color:#cfe3f5;margin-bottom:14px}
.hero-desc{max-width:720px;margin:0 auto 24px;color:#e3eefb}
.hero-phone{margin:-6px 0 22px;color:#cfe3f5;font-size:16px}
.hero-phone a{color:var(--accent);font-weight:700;font-size:22px;letter-spacing:1px}
.hero-phone a:hover{color:#f0bd3e}
.hero-actions{display:flex;gap:14px;justify-content:center;margin-bottom:30px}
.btn{display:inline-block;padding:10px 26px;border-radius:24px;font-weight:600;cursor:pointer}
.btn-primary{background:var(--accent);color:#3a2b00}
.btn-primary:hover{background:#f0bd3e;color:#3a2b00}
.btn-outline{border:1px solid rgba(255,255,255,.7);color:#fff}
.btn-outline:hover{background:rgba(255,255,255,.12)}
.hero-search{display:flex;max-width:600px;margin:0 auto;background:#fff;border-radius:30px;overflow:hidden;box-shadow:var(--shadow)}
.hero-search input{flex:1;border:0;padding:14px 20px;font-size:15px;outline:none}
.hero-search button{border:0;background:var(--accent);color:#3a2b00;padding:0 26px;font-weight:700;cursor:pointer}

/* 全局 AI 对话框 */
.chat-fab{position:fixed;right:24px;bottom:24px;width:58px;height:58px;border-radius:50%;background:var(--primary);color:#fff;font-size:17px;font-weight:800;letter-spacing:1px;z-index:9999;cursor:pointer;border:0;box-shadow:var(--shadow);display:flex;align-items:center;justify-content:center;transition:.2s}
.chat-fab:hover{transform:translateY(-3px);background:var(--primary-dark)}
.chat-panel{position:fixed;right:24px;bottom:96px;width:372px;max-height:520px;display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 32px rgba(0,0,0,.18);z-index:9998;overflow:hidden}
.chat-panel[hidden]{display:none}
.chat-head{background:var(--primary);color:#fff;padding:13px 16px;font-weight:600;display:flex;justify-content:space-between;align-items:center}
.chat-close{cursor:pointer;font-size:22px;line-height:1;color:#fff;opacity:.85}
.chat-close:hover{opacity:1}
.chat-body{flex:1;padding:14px;overflow-y:auto;display:flex;flex-direction:column;gap:10px;min-height:280px;max-height:400px;background:#f6f9fc}
.chat-msg{max-width:82%;padding:9px 13px;border-radius:12px;font-size:14px;line-height:1.65;white-space:pre-wrap;word-break:break-word}
.chat-msg.user{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:4px}
.chat-msg.bot{align-self:flex-start;background:#fff;color:var(--text);border:1px solid var(--line);border-bottom-left-radius:4px}
.chat-msg .chat-links{margin-top:8px;display:flex;flex-direction:column;gap:4px}
.chat-msg .chat-links a{color:var(--primary);font-size:13px;font-weight:600}
.chat-input{display:flex;border-top:1px solid var(--line);padding:10px 12px;gap:8px;background:#fff}
.chat-input input{flex:1;border:1px solid var(--line);border-radius:18px;padding:9px 14px;outline:none;font-size:14px}
.chat-input input:focus{border-color:var(--primary)}
.chat-input button{border:0;background:var(--primary);color:#fff;border-radius:18px;padding:0 18px;cursor:pointer;font-weight:600}
.chat-input button:hover{background:var(--primary-dark)}
@media (max-width:600px){.chat-panel{right:12px;left:12px;width:auto;bottom:84px}}

/* Sections */
.section{padding:48px 0}
.section-alt{background:var(--bg)}
.section-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}
.section-head h2,.section h2{font-size:24px;color:var(--primary-dark)}
.more{color:var(--primary);font-weight:600}

/* Cards */
.cat-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:16px}
.cat-list{display:flex;flex-wrap:wrap;gap:14px 30px}
.cat-link{color:var(--primary);font-size:18px;font-weight:600;padding:4px 0;border-bottom:2px solid transparent;transition:.2s}
.cat-link:hover{color:var(--primary-dark);border-color:var(--accent)}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);transition:.2s}
.cat-card:hover{transform:translateY(-3px);border-color:var(--primary)}
.cat-card h3{color:var(--primary-dark);margin-bottom:6px}
.cat-card p{color:var(--muted);font-size:14px}

.product-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:18px}
.product-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.2s;color:var(--text)}
.product-card:hover{transform:translateY(-3px);border-color:var(--primary)}
.product-card img{width:100%;height:200px;object-fit:cover;background:var(--bg)}
.product-ph{width:100%;height:200px;background:linear-gradient(135deg,#e8eef5,#d5e2f0);display:flex;align-items:center;justify-content:center;color:var(--primary);font-weight:600;text-align:center;padding:10px}
.product-ph.large{height:340px;font-size:18px}
.product-info{padding:14px}
.product-info h3{font-size:16px;color:var(--primary-dark);margin-bottom:4px}
.model{color:var(--muted);font-size:13px}
.product-info .desc{color:var(--muted);font-size:13px;margin:6px 0}
.price{color:#c2410c;font-weight:700}

/* News */
.news-list{display:grid;gap:14px}
.news-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow);color:var(--text);display:block}
.news-item h3{color:var(--primary-dark);margin-bottom:6px}
.news-item p{color:var(--muted);font-size:14px}
.news-item .date{display:inline-block;margin-top:8px;font-size:12px;color:#94a3b8}

/* Layout */
.layout{display:grid;grid-template-columns:240px 1fr;gap:26px}
.sidebar h3{font-size:16px;color:var(--primary-dark);margin-bottom:12px;border-left:4px solid var(--accent);padding-left:10px}
.side-list{list-style:none}
.side-list li{border-bottom:1px dashed var(--line)}
.side-list a{display:block;padding:10px 12px;color:var(--text)}
.side-list a.active,.side-list a:hover{color:var(--primary);background:#eaf2fb}

/* Page banner */
.page-banner{background:var(--bg);border-bottom:1px solid var(--line);padding:34px 0}
.page-banner h1{font-size:28px;color:var(--primary-dark);margin-bottom:6px}
.page-banner p{color:var(--muted)}
.crumbs{font-size:13px;color:var(--muted)}
.crumbs a{color:var(--primary)}

/* Product detail */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.product-detail h1{font-size:26px;color:var(--primary-dark)}
.product-detail .price{font-size:22px;margin:10px 0}
.product-detail .desc{color:var(--muted);margin-bottom:18px}
.rich{line-height:1.9;color:#333}
.rich p{margin-bottom:12px}
.rich h2,.rich h3{margin:16px 0 8px;color:var(--primary-dark)}
/* 技术参数表格（由后台 CSV 生成） */
.rich table.specs-table{width:100%;border-collapse:collapse;margin:12px 0;font-size:14px}
.rich table.specs-table th,.rich table.specs-table td{border:1px solid var(--line);padding:9px 14px;text-align:left;vertical-align:top}
.rich table.specs-table thead th{background:#f5f8fc;color:var(--primary-dark);font-weight:600}
.rich table.specs-table tbody tr:nth-child(even){background:#fafcfe}
.rich table.specs-table tbody tr:hover{background:#eef4fb}
/* 产品页标签导航 */
.product-tabs{display:flex;gap:8px;margin-bottom:22px;border-bottom:2px solid var(--line)}
.product-tabs a{display:inline-block;padding:10px 22px;font-size:15px;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-2px}
.product-tabs a.active{color:var(--primary);border-bottom-color:var(--primary);font-weight:600}
.tab-pane[hidden]{display:none}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:300px 1fr;gap:30px}
.contact-info{background:var(--bg);padding:22px;border-radius:var(--radius)}
.contact-info h3,.contact-form h3{color:var(--primary-dark);margin-bottom:12px}
.contact-form{display:grid;gap:14px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.contact-form label{display:grid;gap:4px;font-size:14px;color:#374151}
.contact-form input,.contact-form textarea{border:1px solid var(--line);border-radius:8px;padding:10px 12px;font-size:14px;font-family:inherit}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--primary);outline:none}
.notice{padding:10px 14px;border-radius:8px;font-size:14px}
.notice.ok{background:#ecfdf5;color:#065f46}
.notice.err{background:#fef2f2;color:#991b1b}
.hint{color:var(--muted);font-size:13px;margin-top:10px}

/* AI search */
.ai-answer{background:linear-gradient(135deg,#f0f7ff,#e6f0fb);border:1px solid #c9def4;border-radius:var(--radius);padding:18px 20px;margin-bottom:26px}
.ai-answer h2{font-size:16px;color:var(--primary-dark);margin-bottom:8px}
.count{color:var(--muted);font-size:14px}
.search-results{display:grid;gap:12px}
.search-item{display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow);color:var(--text)}
.search-item h3{color:var(--primary-dark);margin-bottom:4px}
.search-item p{color:var(--muted);font-size:14px}
.type-badge{flex-shrink:0;height:fit-content;padding:3px 10px;border-radius:12px;background:#eaf2fb;color:var(--primary);font-size:12px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
.tag{background:var(--bg);border:1px solid var(--line);border-radius:16px;padding:6px 14px;color:var(--text)}
.tag:hover{border-color:var(--primary);color:var(--primary)}
.empty{color:var(--muted);padding:20px 0}

/* About */
.about-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:24px}
.about-card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:20px}
.about-card h3{color:var(--primary-dark);margin-bottom:6px}

/* FAQ */
.faq-list{max-width:820px;margin:0 auto}
.faq-item{border:1px solid var(--line);border-radius:var(--radius);background:#fff;margin-bottom:12px;overflow:hidden}
.faq-item summary{cursor:pointer;padding:16px 20px;font-weight:600;color:var(--primary-dark);list-style:none;position:relative;padding-right:40px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--accent);font-size:20px;font-weight:400}
.faq-item[open] summary::after{content:"–"}
.faq-item summary:hover{background:var(--bg)}
.faq-answer{padding:4px 20px 18px;color:#444;border-top:1px dashed var(--line)}
.faq-more{margin:26px auto 0;max-width:820px;color:var(--muted);text-align:center}


/* Pagination */
.pagination{display:flex;gap:8px;justify-content:center;margin-top:28px;flex-wrap:wrap}
.pagination a{min-width:36px;text-align:center;padding:8px 10px;border:1px solid var(--line);border-radius:8px;color:var(--text)}
.pagination a.active,.pagination a:hover{background:var(--primary);color:#fff;border-color:var(--primary)}

/* Footer */
.site-footer{background:#0f2133;color:#c7d4e0;margin-top:20px}
.footer-inner{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:30px;padding:40px 0}
.footer-col h4{color:#fff;margin-bottom:12px;font-size:16px}
.footer-col p{font-size:14px;line-height:2}
.footer-col a{color:#c7d4e0}
.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:16px 0;font-size:13px;color:#8aa0b3}

/* Responsive */
@media(max-width:820px){
  .header-inner{justify-content:space-between}
  .main-nav{order:3;width:100%;flex-wrap:wrap}
  .nav-search{margin-left:auto}
  .layout,.product-detail,.contact-wrap{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .hero h1{font-size:30px}
}