*{margin:0;padding:0;box-sizing:border-box}
:root{--primary:#0a1628;--gold:#c9a84c;--dark:#1a1a2e;--gray:#6c757d;--light:#f8f9fa;--white:#fff;--font:'Segoe UI','Microsoft YaHei',sans-serif}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--dark);overflow-x:hidden;background:var(--primary)}
a{text-decoration:none;color:inherit}
img{max-width:100%;height:auto}
.container{max-width:1200px;margin:0 auto;padding:0 20px}
/* Header */
.header{position:fixed;top:0;left:0;width:100%;z-index:1000;padding:20px 0;transition:all .3s;background:transparent}
.header.scrolled{background:var(--primary);padding:10px 0;box-shadow:0 2px 20px rgba(0,0,0,.5)}
.header .container{display:flex;justify-content:space-between;align-items:center}
.logo{font-size:28px;font-weight:900;color:var(--gold);text-transform:uppercase;letter-spacing:3px}
.logo span{color:var(--white)}
.nav{display:flex;list-style:none;gap:30px}
.nav a{color:var(--white);font-size:15px;font-weight:600;transition:color .3s;position:relative;letter-spacing:1px}
.nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--gold);transition:width .3s}
.nav a:hover{color:var(--gold)}
.nav a:hover::after{width:100%}
/* 顶部导航下拉子菜单 */
.nav li.has-submenu{position:relative}
.nav .submenu{position:absolute;top:100%;left:0;min-width:200px;margin:0;padding:8px 0;list-style:none;background:var(--primary);box-shadow:0 10px 30px rgba(0,0,0,.28);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,transform .2s,visibility .2s;z-index:1100}
.nav li.has-submenu:hover .submenu{opacity:1;visibility:visible;transform:translateY(0)}
.nav .submenu a{display:block;padding:9px 18px;font-size:14px;font-weight:500;letter-spacing:.5px;white-space:nowrap;color:var(--white)}
.nav .submenu a::after{display:none}
.nav .submenu a:hover{color:var(--gold);background:rgba(255,255,255,.06)}
.submenu-arrow{display:inline-block;width:0;height:0;margin-left:6px;border-left:4px solid transparent;border-right:4px solid transparent;border-top:5px solid currentColor;vertical-align:middle;opacity:.8}
.hamburger{display:none;flex-direction:column;cursor:pointer;gap:5px}
.hamburger span{width:30px;height:3px;background:var(--gold);transition:.3s}
/* Hero */
.hero{height:100vh;min-height:700px;background:linear-gradient(135deg,rgba(10,22,40,.92),rgba(10,22,40,.7)),url('https://images.unsplash.com/photo-1487958449943-2429e8be8625?w=1920') center/cover no-repeat;display:flex;align-items:center;position:relative;overflow:hidden}
.hero::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(45deg,transparent 40%,rgba(201,168,76,.1) 100%)}
.hero-content{position:relative;z-index:2;max-width:800px}
.hero h1{font-size:72px;font-weight:900;color:var(--white);line-height:1.1;margin-bottom:20px;text-transform:uppercase}
.hero h1 span{color:var(--gold)}
.hero p{font-size:20px;color:rgba(255,255,255,.7);margin-bottom:40px;line-height:1.6;max-width:600px}
.hero-btns{display:flex;gap:20px}
.btn{display:inline-block;padding:16px 40px;font-size:16px;font-weight:700;border-radius:0;transition:all .3s;cursor:pointer;border:none;text-transform:uppercase;letter-spacing:2px}
.btn-primary{background:var(--gold);color:var(--primary)}
.btn-primary:hover{background:var(--white);color:var(--primary);transform:translateY(-3px)}
.btn-outline{border:2px solid var(--gold);color:var(--gold);background:transparent}
.btn-outline:hover{background:var(--gold);color:var(--primary);transform:translateY(-3px)}
/* Section */
.section{padding:100px 0;background:var(--white)}
.section-dark{background:var(--primary);color:var(--white)}
.section-dark .section-title{color:var(--white)}
.section-dark .section-subtitle{color:rgba(255,255,255,.6)}
.section-title{font-size:42px;font-weight:900;text-align:center;margin-bottom:15px;color:var(--primary);text-transform:uppercase}
.section-title span{color:var(--gold)}
.section-subtitle{text-align:center;font-size:18px;color:var(--gray);margin-bottom:60px;max-width:600px;margin-left:auto;margin-right:auto}
.gold-bar{width:60px;height:4px;background:var(--gold);margin:0 auto 20px}
/* Stats */
.stats{background:var(--primary);padding:80px 0;border-top:3px solid var(--gold);border-bottom:3px solid var(--gold)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px;text-align:center}
.stat-num{font-size:52px;font-weight:900;color:var(--gold);display:block}
.stat-label{font-size:16px;color:rgba(255,255,255,.7);margin-top:10px;text-transform:uppercase;letter-spacing:2px}
/* Services */
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.service-card{background:var(--light);padding:40px;text-align:center;transition:all .4s;position:relative;overflow:hidden;border-bottom:4px solid transparent}
.service-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:var(--gold);transform:translateX(-100%);transition:transform .4s}
.service-card:hover::before{transform:translateX(0)}
.service-card:hover{border-bottom-color:var(--gold);transform:translateY(-10px);box-shadow:0 20px 40px rgba(0,0,0,.15)}
.service-icon{font-size:48px;margin-bottom:20px;display:block}
.service-card h3{font-size:22px;margin-bottom:15px;color:var(--primary)}
.service-card p{color:var(--gray);line-height:1.6}
/* Cases */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:25px}
.case-card{position:relative;overflow:hidden;height:300px;cursor:pointer}
.case-card img{width:100%;height:100%;object-fit:cover;transition:transform .6s}
.case-card:hover img{transform:scale(1.1)}
.case-overlay{position:absolute;bottom:0;left:0;width:100%;padding:30px;background:linear-gradient(transparent,rgba(10,22,40,.95));color:var(--white);transform:translateY(30px);transition:transform .4s}
.case-card:hover .case-overlay{transform:translateY(0)}
.case-overlay h4{font-size:20px;margin-bottom:5px}
.case-overlay p{font-size:14px;color:var(--gold)}
/* News */
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px}
.news-card{background:var(--white);overflow:hidden;box-shadow:0 5px 20px rgba(0,0,0,.08);transition:all .4s;border-bottom:3px solid transparent}
.news-card:hover{transform:translateY(-8px);box-shadow:0 15px 40px rgba(0,0,0,.15);border-bottom-color:var(--gold)}
.news-img{height:220px;overflow:hidden}
.news-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.news-card:hover .news-img img{transform:scale(1.08)}
.news-body{padding:25px}
.news-date{font-size:13px;color:var(--gold);font-weight:700;text-transform:uppercase}
.news-body h3{font-size:20px;margin:10px 0;color:var(--primary)}
.news-body p{color:var(--gray);font-size:14px;line-height:1.6}
.news-link{color:var(--gold);font-weight:700;display:inline-block;margin-top:15px;transition:color .3s}
.news-link:hover{color:var(--primary)}
/* Partners */
.partners{background:var(--light);padding:60px 0}
.partner-grid{display:flex;justify-content:center;align-items:center;gap:50px;flex-wrap:wrap}
.partner-item{font-size:24px;font-weight:900;color:var(--gray);opacity:.4;transition:opacity .3s;text-transform:uppercase;letter-spacing:3px}
.partner-item:hover{opacity:.8}
.partner-item img.partner-logo{max-height:48px;width:auto;object-fit:contain;filter:grayscale(100%);opacity:.65;transition:opacity .3s,filter .3s}
.partner-item:hover img.partner-logo{opacity:1;filter:grayscale(0)}
/* Timeline */
.timeline{position:relative;padding:40px 0}
.timeline::before{content:'';position:absolute;left:50%;top:0;width:2px;height:100%;background:var(--gold);transform:translateX(-50%)}
.timeline-item{display:flex;margin-bottom:50px;position:relative}
.timeline-item:nth-child(odd){flex-direction:row-reverse}
.timeline-content{width:45%;padding:30px;background:var(--light);position:relative;transition:all .3s}
.timeline-content:hover{transform:translateY(-5px);box-shadow:0 10px 30px rgba(0,0,0,.1)}
.timeline-content h3{color:var(--gold);font-size:24px;margin-bottom:5px}
.timeline-content h4{color:var(--primary);font-size:18px;margin-bottom:10px}
.timeline-content p{color:var(--gray);line-height:1.6}
.timeline-dot{position:absolute;left:50%;top:30px;width:20px;height:20px;background:var(--gold);border-radius:50%;transform:translateX(-50%);z-index:2;border:4px solid var(--primary)}
.timeline-item:nth-child(odd) .timeline-content{text-align:right}
/* 发展历程扩展字段：小标题与配图，仅后台「发展历程」录入数据时出现 */
.timeline-sub{display:block;font-size:13px;letter-spacing:.08em;color:var(--gray);margin-bottom:8px}
.timeline-img{width:100%;height:170px;object-fit:cover;display:block;margin:14px 0}
/* Values */
.values-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.value-item{text-align:center;padding:40px 20px;background:var(--light);transition:all .3s}
.value-item:hover{transform:translateY(-8px);box-shadow:0 10px 30px rgba(0,0,0,.1)}
.value-icon{font-size:40px;margin-bottom:15px;display:block}
.value-item h4{font-size:20px;color:var(--primary);margin-bottom:10px}
.value-item p{color:var(--gray);font-size:14px}
/* Team */
.team-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:30px}
.team-card{text-align:center;background:var(--light);padding:30px;transition:all .3s}
.team-card:hover{transform:translateY(-8px);box-shadow:0 10px 30px rgba(0,0,0,.1)}
.team-avatar{width:150px;height:150px;border-radius:50%;margin:0 auto 20px;overflow:hidden;border:4px solid var(--gold)}
.team-avatar img{width:100%;height:100%;object-fit:cover}
.team-card h4{font-size:20px;color:var(--primary)}
.team-card p{color:var(--gold);font-weight:600;font-size:14px}
/* Filters */
.filters{display:flex;justify-content:center;gap:15px;margin-bottom:40px;flex-wrap:wrap}
.filter-btn{padding:10px 25px;border:2px solid var(--gold);background:transparent;color:var(--gold);font-weight:700;cursor:pointer;transition:all .3s;font-size:14px;text-transform:uppercase}
.filter-btn.active,.filter-btn:hover{background:var(--gold);color:var(--primary)}
/* Banner */
.page-banner{height:400px;display:flex;align-items:center;justify-content:center;text-align:center;position:relative;overflow:hidden}
.page-banner h1{font-size:56px;font-weight:900;color:var(--white);text-transform:uppercase;position:relative;z-index:2}
.page-banner h1 span{color:var(--gold)}
.page-banner p{color:rgba(255,255,255,.7);font-size:18px;position:relative;z-index:2;margin-top:15px}
.banner-overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(135deg,rgba(10,22,40,.92),rgba(10,22,40,.7));z-index:1}
.breadcrumb{position:relative;z-index:2;color:var(--gold);margin-top:15px}
.breadcrumb a{color:rgba(255,255,255,.6)}
/* Contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:50px}
.contact-info h3{font-size:28px;color:var(--primary);margin-bottom:30px}
.info-item{display:flex;gap:20px;margin-bottom:25px;align-items:flex-start}
.info-icon{width:50px;height:50px;background:var(--gold);display:flex;align-items:center;justify-content:center;font-size:24px;flex-shrink:0;color:var(--primary);font-weight:700}
.info-item h4{font-size:18px;color:var(--primary);margin-bottom:5px}
.info-item p{color:var(--gray)}
.contact-form input,.contact-form textarea{width:100%;padding:15px;margin-bottom:20px;border:2px solid #e1e1e1;font-size:15px;transition:border .3s;font-family:var(--font);background:var(--light)}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--gold);outline:none}
.contact-form textarea{height:150px;resize:vertical}
.map-placeholder{height:400px;background:var(--light);display:flex;align-items:center;justify-content:center;font-size:20px;color:var(--gray);margin-top:50px;border:2px dashed #ddd}
/* Footer */
.footer{background:var(--primary);color:var(--white);padding:80px 0 0;border-top:4px solid var(--gold)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px}
.footer h3{color:var(--gold);margin-bottom:25px;font-size:20px;text-transform:uppercase;letter-spacing:1px}
.footer p{color:rgba(255,255,255,.6);line-height:1.8;font-size:14px}
.footer-links{list-style:none}
.footer-links li{margin-bottom:12px}
.footer-links a{color:rgba(255,255,255,.6);transition:color .3s;font-size:14px}
.footer-links a:hover{color:var(--gold)}
.footer-contact li{color:rgba(255,255,255,.6);margin-bottom:12px;font-size:14px;list-style:none}
.footer-bottom{text-align:center;padding:25px 0;margin-top:50px;border-top:1px solid rgba(255,255,255,.1);color:rgba(255,255,255,.4);font-size:14px}
/* Pagination */
.pagination{display:flex;justify-content:center;gap:10px;margin-top:50px}
.pagination a{padding:10px 18px;border:2px solid var(--gold);color:var(--gold);font-weight:700;transition:all .3s}
.pagination a.active,.pagination a:hover{background:var(--gold);color:var(--primary)}
/* Animations */
.fade-in{opacity:0;transform:translateY(30px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}
/* ========== Detail pages（产品详情 / 新闻详情） ========== */
/* 详情页专用小尺寸 banner：详情页必须有深色 banner，否则固定透明 header 的白色导航会压在白底 section 上导致不可见 */
.page-banner-sm{height:320px}
.page-banner-sm h1{font-size:40px;max-width:900px;line-height:1.25;text-transform:none}
/* 面包屑（浅色背景版）：默认 .breadcrumb a 是半透明白，放在白底 section 上会看不见 */
.breadcrumb-light{position:static;z-index:auto;margin:0 0 35px;color:var(--gray);font-size:14px}
.breadcrumb-light a{color:var(--gray);transition:color .3s}
.breadcrumb-light a:hover{color:var(--gold)}
.breadcrumb-light span{color:var(--primary);font-weight:600}
/* 产品详情两栏 */
.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:start}
.detail-media img{width:100%;height:420px;object-fit:cover;border-radius:6px;box-shadow:0 12px 35px rgba(10,22,40,.18)}
.detail-title{font-size:32px;color:var(--primary);margin-bottom:15px;line-height:1.3}
.detail-price{font-size:28px;color:var(--gold);font-weight:700;margin-bottom:20px}
.detail-desc{color:var(--gray);line-height:1.85;margin-bottom:28px;font-size:15px}
.badge-cat{display:inline-block;padding:6px 16px;border:2px solid var(--gold);color:var(--gold);font-size:13px;font-weight:700;letter-spacing:1px;margin-bottom:18px}
.detail-meta{display:flex;flex-wrap:wrap;gap:20px;align-items:center;color:var(--gray);font-size:14px;margin-bottom:30px;padding-bottom:20px;border-bottom:1px solid #eee}
/* 详情页内小节标题（左对齐，区别于首页居中标题） */
.detail-section{margin-top:60px}
.detail-section .gold-bar{margin:0 0 18px}
.detail-section .section-title{text-align:left;font-size:30px;margin-bottom:28px}
/* 新闻正文容器 */
.article-wrap{max-width:860px;margin:0 auto}
.article-hero{height:420px;overflow:hidden;border-radius:6px;margin-bottom:35px;box-shadow:0 12px 35px rgba(10,22,40,.18)}
.article-hero img{width:100%;height:100%;object-fit:cover}
.article-title{font-size:34px;color:var(--primary);line-height:1.35;margin-bottom:15px}
.article-summary{font-size:17px;color:var(--primary);font-weight:600;line-height:1.75;margin-bottom:26px;padding:16px 20px;background:var(--light);border-left:4px solid var(--gold)}
.article-foot{margin-top:50px;padding-top:30px;border-top:1px solid #eee;text-align:center}
/* ========== 富文本正文 ==========
   顶部 *{margin:0;padding:0} 会把编辑器输出的 p/ul/li/h2 全部压扁（段落黏连、列表无缩进无符号），
   富文本容器必须显式恢复排版。 */
.rich-text{color:#4a5568;line-height:1.95;font-size:16px}
.rich-text>*:first-child{margin-top:0}
.rich-text>*:last-child{margin-bottom:0}
.rich-text p{margin:0 0 18px}
.rich-text h2{font-size:26px;color:var(--primary);margin:38px 0 16px;padding-left:14px;border-left:4px solid var(--gold);line-height:1.4}
.rich-text h3{font-size:21px;color:var(--primary);margin:30px 0 14px;line-height:1.4}
.rich-text h4{font-size:18px;color:var(--primary);margin:24px 0 12px}
.rich-text ul,.rich-text ol{margin:0 0 20px;padding-left:26px}
.rich-text ul{list-style:disc}
.rich-text ol{list-style:decimal}
.rich-text li{margin-bottom:10px;padding-left:4px}
.rich-text li::marker{color:var(--gold)}
.rich-text strong,.rich-text b{color:var(--primary);font-weight:700}
.rich-text a{color:var(--gold);text-decoration:underline}
.rich-text a:hover{color:var(--primary)}
.rich-text img{display:block;max-width:100%;height:auto;margin:26px auto;border-radius:4px}
.rich-text blockquote{margin:26px 0;padding:18px 24px;background:var(--light);border-left:4px solid var(--gold);color:var(--gray)}
.rich-text table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px}
.rich-text th,.rich-text td{border:1px solid #e1e1e1;padding:12px 14px;text-align:left}
.rich-text th{background:var(--light);color:var(--primary);font-weight:700}
.rich-text hr{border:none;border-top:1px solid #e1e1e1;margin:30px 0}
/* Responsive */
@media(max-width:1024px){
.services-grid,.cases-grid,.news-grid{grid-template-columns:repeat(2,1fr)}
.stats-grid{grid-template-columns:repeat(2,1fr)}
.footer-grid{grid-template-columns:1fr 1fr}
.team-grid{grid-template-columns:repeat(2,1fr)}
.values-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
.hero h1{font-size:42px}
.nav{display:none;position:absolute;top:100%;left:0;width:100%;background:var(--primary);flex-direction:column;padding:20px;gap:15px}
.nav.active{display:flex}
.hamburger{display:flex}
/* 移动端子菜单展开后堆叠显示 */
.nav .submenu{position:static;opacity:1;visibility:visible;transform:none;box-shadow:none;background:rgba(0,0,0,.18);min-width:0;padding:4px 0 6px 14px}
.submenu-arrow{display:none}
.services-grid,.cases-grid,.news-grid,.stats-grid,.team-grid,.values-grid{grid-template-columns:1fr}
.contact-wrap{grid-template-columns:1fr}
.footer-grid{grid-template-columns:1fr}
.hero-btns{flex-direction:column}
.timeline::before{left:20px}
.timeline-item,.timeline-item:nth-child(odd){flex-direction:column;padding-left:50px}
.timeline-content{width:100%}
.timeline-dot{left:20px}
.timeline-item:nth-child(odd) .timeline-content{text-align:left}
.page-banner h1{font-size:36px}
.hero{min-height:500px}
.section{padding:60px 0}
.detail-grid{grid-template-columns:1fr;gap:30px}
.detail-media img{height:250px}
.detail-title{font-size:24px}
.page-banner-sm{height:240px}
.page-banner-sm h1{font-size:26px}
.article-hero{height:210px}
.article-title{font-size:24px}
.detail-section .section-title{font-size:24px}
.rich-text{font-size:15px;line-height:1.85}
}