/* article.css - 文章页面公共样式，与首页头部/底部保持一致 */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'PingFang SC','Hiragino Sans GB','Microsoft YaHei',sans-serif;line-height:1.6;color:#333;background:#fff}
a{text-decoration:none;transition:all .3s ease}
a:hover{color:#e84545}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}

/* 顶部联系栏 */
.top-bar{background:linear-gradient(135deg,#c0392b 0%,#e74c3c 100%);color:#fff;padding:8px 0;text-align:center;font-size:14px;position:relative;z-index:1001}
.top-bar a{color:#fff}
.top-bar a:hover{color:#ffeaa7}
.top-bar .hotline{font-weight:600}

/* 头部导航 */
.header{background:#fff;box-shadow:0 2px 15px rgba(0,0,0,.08);position:sticky;top:0;z-index:1000;transition:all .3s ease}
.header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,.12)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:12px}
.logo img{height:45px;transition:transform .3s}
.logo:hover img{transform:scale(1.02)}
.logo-text{font-size:20px;font-weight:700;color:#c0392b}
.nav-list{display:flex;list-style:none;gap:4px;margin:0;padding:0}
.nav-list>li{position:relative}
.nav-list a{color:#333;font-size:14px;font-weight:500;padding:10px 12px;display:block;border-radius:6px;transition:all .3s ease}
.nav-list a:hover,.nav-list a.active{color:#e74c3c;background:rgba(231,76,60,.08)}
.nav-list .has-dropdown::after{content:'▾';margin-left:5px;font-size:12px}
.dropdown-menu{position:absolute;top:100%;left:0;background:#fff;box-shadow:0 8px 25px rgba(0,0,0,.12);min-width:160px;border-radius:10px;opacity:0;visibility:hidden;transform:translateY(10px);transition:all .3s ease;overflow:hidden}
.nav-list li:hover>.dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-menu li{list-style:none}
.dropdown-menu a{padding:12px 20px!important;color:#555!important;font-size:14px!important;white-space:nowrap;border-radius:0}
.dropdown-menu a:hover{background:#fef5f5;color:#e74c3c!important;padding-left:25px!important}
.mobile-toggle{display:none;font-size:24px;cursor:pointer;color:#333}

/* 面包屑 */
.breadcrumb{background:#f8f9fa;padding:15px 0;border-bottom:1px solid #eee}
.breadcrumb a{color:#666;font-size:14px}
.breadcrumb a:hover{color:#e74c3c}
.breadcrumb .sep{margin:0 8px;color:#999}
.breadcrumb .current{color:#333;font-weight:500}

/* 文章正文区域 */
.article-section{padding:50px 0}
.article-container{max-width:800px;margin:0 auto;padding:0 20px}
.article-header{text-align:center;margin-bottom:40px}
.article-header h1{font-size:2rem;color:#1a1a2e;margin-bottom:15px;line-height:1.4}
.article-meta{color:#999;font-size:14px;margin-bottom:20px}
.article-cover{width:100%;max-height:400px;object-fit:cover;border-radius:12px;margin-bottom:30px;box-shadow:0 4px 15px rgba(0,0,0,.1)}
.article-body{font-size:16px;line-height:1.9;color:#444}
.article-body p{margin-bottom:1.2em}
.article-body img{max-width:100%;height:auto;border-radius:8px;margin:20px 0;display:block}
.article-body h2,.article-body h3,.article-body h4{margin:1.5em 0 .8em;color:#1a1a2e}
.article-body h2{font-size:1.5rem;border-bottom:2px solid #e74c3c;padding-bottom:8px;display:inline-block}
.article-body h3{font-size:1.25rem}
.article-body ul,.article-body ol{margin:1em 0 1em 2em}
.article-body li{margin-bottom:.5em}
.article-body strong{color:#1a1a2e}
.article-body table{width:100%;border-collapse:collapse;margin:1.5em 0}
.article-body th,.article-body td{border:1px solid #ddd;padding:10px;text-align:left}
.article-body th{background:#f8f9fa;font-weight:600}

/* 分享栏 */
.article-share{display:flex;align-items:center;gap:15px;margin-top:40px;padding-top:25px;border-top:1px solid #eee}
.article-share span{color:#666;font-size:14px}
.article-share a{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:#f0f0f0;color:#666;transition:all .3s}
.article-share a:hover{background:#e74c3c;color:#fff}

/* 相关文章 */
.related-section{padding:50px 0;background:#f8f9fa}
.related-section h2{font-size:1.5rem;color:#1a1a2e;margin-bottom:25px;text-align:center}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:20px}
.related-card{background:#fff;border-radius:10px;overflow:hidden;box-shadow:0 2px 8px rgba(0,0,0,.06);transition:all .3s}
.related-card:hover{transform:translateY(-4px);box-shadow:0 6px 20px rgba(0,0,0,.1)}
.related-card img{width:100%;height:160px;object-fit:cover}
.related-card-info{padding:15px}
.related-card-info h4{font-size:1rem;color:#333;margin-bottom:8px;line-height:1.4}
.related-card-info .date{color:#999;font-size:13px}

/* 底部 */
.footer-section{background:#1a1a2e;color:#fff;padding:70px 0 30px}
.footer-content{display:grid;grid-template-columns:1.5fr 1fr 1.2fr;gap:50px;max-width:1200px;margin:0 auto;padding:0 20px}
.footer-col h3{font-size:19px;margin-bottom:25px;color:#fff;position:relative;padding-bottom:12px}
.footer-col h3::after{content:'';position:absolute;bottom:0;left:0;width:40px;height:3px;background:#e74c3c;border-radius:2px}
.footer-col p{line-height:2.2;color:#aaa;font-size:14px}
.footer-col a{color:#aaa;text-decoration:none;transition:all .3s;display:block;margin-bottom:8px;position:relative;z-index:1}
.footer-col a:hover{color:#e74c3c;padding-left:8px;background:rgba(255,255,255,.05);border-radius:4px}
.footer-col .contact-item{display:flex;align-items:flex-start;gap:12px;margin-bottom:15px}
.footer-col .contact-item i{color:#e74c3c;margin-top:4px}
.friend-links{text-align:center;margin-top:30px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1)}
.friend-links h3{font-size:16px;color:#fff;margin-bottom:15px}
.friend-links a{color:#aaa;font-size:14px;margin:0 10px;transition:color .3s;display:inline-block}
.friend-links a:hover{color:#e74c3c}
.footer-bottom{text-align:center;padding-top:35px;margin-top:45px;border-top:1px solid rgba(255,255,255,.1);color:#666;font-size:14px}
.footer-bottom a{color:#666}
.footer-bottom a:hover{color:#e74c3c}
.back-to-top{position:fixed;bottom:30px;right:30px;width:45px;height:45px;background:#e74c3c;color:#fff;border:none;border-radius:50%;cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 4px 15px rgba(231,76,60,.3);transition:all .3s;z-index:999}
.back-to-top:hover{background:#c0392b;transform:translateY(-3px)}

/* 响应式 */
@media(max-width:992px){.footer-content{grid-template-columns:1fr 1fr}}
@media(max-width:768px){
.mobile-toggle{display:block}
.nav-list{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:0 8px 25px rgba(0,0,0,.12);padding:10px}
.nav-list.active{display:flex}
.nav-list a{padding:12px 20px;border-radius:0}
.dropdown-menu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;display:none}
.nav-list li:hover>.dropdown-menu{display:block}
.article-header h1{font-size:1.5rem}
.footer-content{grid-template-columns:1fr;gap:35px}
.related-grid{grid-template-columns:1fr}
}