*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Microsoft YaHei","PingFang SC",sans-serif;color:#333;background:#fff;line-height:1.7}
a{text-decoration:none;color:inherit}
ul{list-style:none}
img{max-width:100%;display:block}
.container{max-width:1200px;margin:0 auto;padding:0 15px}
:root{--blue:#0a3d7c;--gold:#c9a24b;--light:#f4f7fb}

/* top bar */
.top-bar{background:#f0f4f8;font-size:13px;color:#666;padding:8px 0}
.top-inner{display:flex;justify-content:space-between;align-items:center}
.top-links a{color:#666;margin-left:6px}
.top-links a:hover{color:var(--blue)}

/* nav */
.main-nav{background:#fff;border-bottom:3px solid var(--blue);position:sticky;top:0;z-index:100;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;flex-direction:column;line-height:1.1;padding:10px 0}
.brand-cn{font-size:22px;font-weight:700;color:var(--blue);letter-spacing:1px}
.brand-en{font-size:11px;color:var(--gold);letter-spacing:2px;text-transform:uppercase}
.nav-menu{display:flex}
.nav-menu>li{position:relative}
.nav-menu>li>a{display:block;padding:22px 14px;font-size:15px;color:#333;transition:.2s;border-bottom:3px solid transparent;margin-bottom:-3px}
.nav-menu>li>a:hover,.nav-menu>li>a.active{color:var(--blue);border-bottom-color:var(--gold)}
.has-sub .sub-menu{position:absolute;top:100%;left:0;background:#fff;min-width:150px;box-shadow:0 6px 20px rgba(0,0,0,.12);border-top:2px solid var(--gold);display:none;z-index:60}
.has-sub:hover .sub-menu{display:block}
.sub-menu li a{display:block;padding:10px 16px;font-size:14px;color:#555;border-bottom:1px solid #f0f0f0}
.sub-menu li a:hover{background:var(--blue);color:#fff}

/* banner */
.page-banner{position:relative;height:300px;background-size:cover;background-position:center;display:flex;align-items:center;justify-content:center}
.banner-mask{position:absolute;inset:0;background:rgba(10,61,124,.55)}
.banner-content{position:relative;text-align:center;color:#fff}
.banner-content h1{font-size:38px;letter-spacing:3px}
.banner-content p{font-size:15px;color:var(--gold);letter-spacing:4px;margin-top:6px}

/* section */
.section{padding:55px 15px}
.sec-head{text-align:center;margin-bottom:40px}
.sec-head h2{font-size:28px;color:var(--blue);position:relative;display:inline-block;padding-bottom:12px}
.sec-head h2:after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:60px;height:3px;background:var(--gold)}
.sec-head .en{display:block;font-size:13px;color:#999;letter-spacing:3px;margin-top:6px}

/* about */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start;margin-bottom:40px}
.about-img img{border-radius:6px;width:100%;height:340px;object-fit:cover}
.about-text p{margin-bottom:14px;text-indent:2em;text-align:justify}
.about-text.full{margin-top:30px}
.about-text h3{font-size:20px;color:var(--blue);margin:20px 0 10px;border-left:4px solid var(--gold);padding-left:10px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin:30px 0}
.stat{background:var(--light);text-align:center;padding:26px 10px;border-radius:8px;border-bottom:3px solid var(--gold)}
.stat b{display:block;font-size:30px;color:var(--blue);font-weight:700}
.stat span{font-size:13px;color:#777}

/* cards */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:22px}
.card{background:#fff;border:1px solid #eee;border-radius:8px;overflow:hidden;transition:.3s;box-shadow:0 2px 10px rgba(0,0,0,.04)}
.card:hover{transform:translateY(-6px);box-shadow:0 12px 28px rgba(10,61,124,.14)}
.card img{width:100%;height:180px;object-fit:cover}
.card-body{padding:18px}
.card-body h3{font-size:17px;color:var(--blue);margin-bottom:8px}
.card-body p{font-size:14px;color:#666;min-height:60px}

/* case */
.case .card-body{padding:14px 18px}
.case .price{color:#999;font-size:13px;margin-top:6px}
.case .price b{color:var(--gold);font-weight:400;text-decoration:line-through;margin-right:8px}

/* news */
.news-list{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.news-item{display:flex;gap:16px;padding:16px;border:1px solid #eee;border-radius:8px;transition:.2s}
.news-item:hover{box-shadow:0 6px 18px rgba(0,0,0,.08);border-color:var(--gold)}
.news-date{background:var(--blue);color:#fff;text-align:center;padding:10px;border-radius:6px;min-width:64px}
.news-date b{display:block;font-size:22px;line-height:1}
.news-date span{font-size:12px;color:#d8e4f5}
.news-txt h3{font-size:16px;color:#333;margin-bottom:6px}
.news-txt p{font-size:13px;color:#888}

/* CTA */
.cta{background:linear-gradient(135deg,var(--blue),#0d4d99);color:#fff;text-align:center;padding:50px 15px}
.cta h2{font-size:26px;margin-bottom:10px}
.cta p{color:#d7e6fa;margin-bottom:20px}
.btn-gold{display:inline-block;background:var(--gold);color:#fff;padding:12px 34px;border-radius:30px;font-size:16px;transition:.2s;border:0;cursor:pointer}
.btn-gold:hover{background:#b88f3c;transform:scale(1.04)}

/* footer */
.footer{background:#12294d;color:#c9d6e8;padding:45px 15px 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:30px}
.footer h4{color:#fff;font-size:16px;margin-bottom:14px;position:relative;padding-bottom:8px}
.footer h4:after{content:"";position:absolute;left:0;bottom:0;width:36px;height:2px;background:var(--gold)}
.footer ul li{margin-bottom:8px}
.footer ul li a:hover{color:var(--gold)}
.footer p{font-size:14px}
.copyright{text-align:center;padding:20px 0;margin-top:35px;border-top:1px solid rgba(255,255,255,.1);font-size:13px;color:#8aa0c0}

/* home hero banner slider */
.hero{position:relative;height:520px;overflow:hidden}
.slides{display:flex;width:300%;height:100%;transition:transform .8s ease}
.slide{width:33.3333%;height:100%;background-size:cover;background-position:center;position:relative;display:flex;align-items:center;justify-content:center}
.slide-mask{position:absolute;inset:0;background:rgba(10,61,124,.5)}
.slide-content{position:relative;text-align:center;color:#fff}
.slide-content h2{font-size:46px;letter-spacing:4px;text-shadow:0 2px 12px rgba(0,0,0,.4)}
.slide-content p{font-size:17px;color:#e8f0fa;margin:14px 0 24px;letter-spacing:2px}
.slide-content .btn-gold{font-size:15px;padding:11px 30px}
.dots{position:absolute;bottom:22px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.5);cursor:pointer;border:0}
.dot.active{background:var(--gold)}

/* home intro */
.intro{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:center}
.intro img{border-radius:8px;height:360px;object-fit:cover;width:100%}
.intro h3{font-size:24px;color:var(--blue);margin-bottom:14px}
.intro p{margin-bottom:12px;text-align:justify}
.view-more{display:inline-block;color:var(--blue);border:1px solid var(--blue);padding:8px 22px;border-radius:20px;margin-top:8px;transition:.2s}
.view-more:hover{background:var(--blue);color:#fff}

/* biz icons */
.biz-item{text-align:center;padding:26px 18px;background:var(--light);border-radius:10px;transition:.25s;border-bottom:3px solid transparent}
.biz-item:hover{background:#fff;border-bottom-color:var(--gold);box-shadow:0 8px 22px rgba(0,0,0,.08)}
.biz-item .ico{font-size:40px;margin-bottom:12px}
.biz-item h3{font-size:18px;color:var(--blue);margin-bottom:8px}
.biz-item p{font-size:14px;color:#666}

/* case grid home */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}

/* honor */
.honor-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center}
.honor-item{padding:20px;border:1px solid #eee;border-radius:8px;transition:.2s}
.honor-item:hover{box-shadow:0 8px 20px rgba(0,0,0,.08)}
.honor-item img{height:120px;object-fit:contain;margin:0 auto 12px}
.honor-item h4{font-size:15px;color:var(--blue)}

/* hr */
.job-list{border:1px solid #eee;border-radius:8px;overflow:hidden}
.job-row{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;padding:14px 18px;border-bottom:1px solid #f0f0f0;align-items:center}
.job-row.head{background:var(--blue);color:#fff;font-weight:600}
.job-row:nth-child(even):not(.head){background:#f8fafd}
.job-row a{color:var(--blue)}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{font-size:20px;color:var(--blue);margin-bottom:14px}
.contact-info p{margin-bottom:10px;font-size:15px}
.contact-form .row{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}
.contact-form input,.contact-form textarea{width:100%;padding:11px 14px;border:1px solid #ddd;border-radius:6px;font-size:14px}
.contact-form textarea{height:120px;resize:vertical}
.contact-form button{background:var(--blue);color:#fff;padding:11px 30px;border:0;border-radius:6px;cursor:pointer;font-size:15px}
.contact-form button:hover{background:#0d4d99}

/* ===== 移动端菜单（汉堡按钮 + 右侧抽屉 + 遮罩）===== */
.nav-toggle{display:none;flex-direction:column;justify-content:space-between;
  width:40px;height:28px;padding:4px 6px;background:none;border:0;cursor:pointer}
.nav-toggle .bar{display:block;width:24px;height:2px;background:var(--blue);transition:.25s}
.nav-toggle.active .bar:nth-child(1){transform:translateY(9px) rotate(45deg)}
.nav-toggle.active .bar:nth-child(2){opacity:0}
.nav-toggle.active .bar:nth-child(3){transform:translateY(-9px) rotate(-45deg)}
.nav-mask{position:fixed;inset:0;background:rgba(0,0,0,.45);opacity:0;visibility:hidden;
  transition:.25s;z-index:90}
.nav-mask.show{opacity:1;visibility:visible}
.sub-toggle{display:none}

/* responsive */
@media(max-width:900px){
  .nav-toggle{display:flex}
  .nav-menu{display:block;position:fixed;top:0;right:0;bottom:0;width:78%;max-width:330px;
    background:#fff;z-index:110;padding:0;overflow-y:auto;-webkit-overflow-scrolling:touch;
    transform:translateX(100%);transition:transform .3s ease;box-shadow:-6px 0 24px rgba(0,0,0,.18)}
  .nav-menu.open{transform:translateX(0)}
  .nav-menu>li{width:100%}
  .nav-menu>li>a{padding:14px 20px;border-bottom:1px solid #f0f0f0;margin-bottom:0}
  .nav-menu>li>a:hover,.nav-menu>li>a.active{border-bottom-color:var(--gold)}
  .has-sub .sub-menu{display:none;position:static;min-width:0;box-shadow:none;border-top:0;background:#f7f9fc}
  .has-sub.open>.sub-menu{display:block}
  .sub-menu li a{padding:11px 20px 11px 34px}
  .sub-toggle{display:flex;position:absolute;top:0;right:0;width:52px;height:100%;
    align-items:center;justify-content:center;background:none;border:0;
    font-size:20px;color:#666;cursor:pointer;transition:.2s}
  .has-sub.open>.sub-toggle{transform:rotate(45deg)}

  .about-grid,.intro,.contact-grid,.news-list{grid-template-columns:1fr}
  .grid-3,.case-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4,.honor-grid,.stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .hero{height:360px}
  .slide-content h2{font-size:30px}
}
@media(max-width:560px){
  .grid-3,.case-grid,.grid-4,.honor-grid,.stats{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .job-row{font-size:13px;padding:10px}
}

/* ===== 品牌 Logo：logo 在左、文字在右（原 index.html 内嵌样式，已合并） ===== */
.main-nav .nav-inner .brand {
  display: flex !important;
  flex-direction: row !important;   /* 关键：横向排列 */
  flex-wrap: nowrap !important;
  align-items: center !important;
  gap: 10px;
  text-decoration: none;
}

.main-nav .nav-inner .brand-logo {
  display: block !important;
  width: 46px;
  height: 46px;
  object-fit: contain;
  flex-shrink: 0;
  margin: 0 !important;
}

.main-nav .nav-inner .brand-text {
  display: flex !important;
  flex-direction: column !important;  /* 中文在上、英文在下（两行） */
  justify-content: center;
  line-height: 1.25;
  text-align: left;
}

/* 文字颜色：默认深色；若你的导航条是深底，把 #222 改回 #fff */
.main-nav .nav-inner .brand-cn {
  display: block !important;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 2px;
  color: #222 !important;
  white-space: nowrap;
}

.main-nav .nav-inner .brand-en {
  display: block !important;
  margin: 2px 0 0 !important;
  font-size: 11px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: #888 !important;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .main-nav .nav-inner .brand-logo { width: 34px !important; height: 34px !important; }
  .main-nav .nav-inner .brand-cn { font-size: 16px !important; letter-spacing: 1px; }
  .main-nav .nav-inner .brand-en { font-size: 9px !important; }
}