/* ===== Reset ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Microsoft YaHei","微软雅黑","PingFang SC",sans-serif;color:#333;line-height:1.6}
a{text-decoration:none}
/* ===== Variables ===== */
:root{--blue:#1F87E8;--blue-dark:#1565C0;--blue-light:#E3F2FD;--accent:#FF6F00;--text:#333;--text-light:#666;--bg:#f5f8fc;--white:#fff;--shadow:0 2px 20px rgba(0,0,0,.08)}
/* ===== Animations ===== */
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes countUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
.animate{animation:fadeInUp .6s ease forwards}
.animate-delay-1{animation-delay:.1s}
.animate-delay-2{animation-delay:.2s}
.animate-delay-3{animation-delay:.3s}
/* ===== Header ===== */
.header{position:fixed;top:0;left:0;right:0;background:var(--white);box-shadow:0 1px 10px rgba(0,0,0,.06);z-index:1000;height:70px}
.header-inner{max-width:1200px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;padding:0 20px;height:70px}
.logo{display:flex;align-items:center;gap:10px;padding-left:40px}
.logo img{height:52px}
.logo-text{font-size:22px;font-weight:600;color:#333;margin-left:2px;white-space:nowrap;position:relative;top:4px}
.nav{display:flex;gap:0}
.nav a{padding:0 20px;line-height:70px;color:#333;font-size:16px;font-weight:500;transition:.2s;position:relative}
.nav a:hover,.nav a.active{color:var(--blue)}
.nav a::after{content:'';position:absolute;bottom:0;left:20px;right:20px;height:3px;background:var(--blue);transform:scaleX(0);transition:.2s}
.nav a:hover::after,.nav a.active::after{transform:scaleX(1)}
.nav-toggle{display:none;flex-direction:column;gap:4px;cursor:pointer}
.nav-toggle span{width:24px;height:2px;background:#333}
/* ===== Video Banner ===== */
.video-banner{position:relative;margin-top:70px;width:100%;overflow:hidden;height:calc(100vh - 70px)}
.video-banner video{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;z-index:0}
.video-banner .overlay{position:absolute;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,.0);z-index:1}
.video-banner .content{position:relative;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center;color:var(--white);padding:0 20px}
.video-banner .content h1{font-size:44px;font-weight:700;margin-bottom:16px;text-shadow:0 2px 10px rgba(0,0,0,.3);animation:fadeInUp .8s ease}
.video-banner .content p{font-size:18px;max-width:700px;opacity:.9;margin-bottom:30px;animation:fadeInUp .8s .2s ease both}
.video-banner .content .btn{display:inline-block;padding:14px 48px;background:var(--accent);color:#fff;border-radius:30px;font-size:16px;transition:.3s;animation:fadeInUp .8s .4s ease both}
.video-banner .content .btn:hover{transform:translateY(-2px);box-shadow:0 8px 25px rgba(255,111,0,.4)}
/* ===== Sections ===== */
.section{padding:70px 20px}
.video-banner + .section{padding-top:40px}
.section-inner{max-width:1200px;margin:0 auto}
.section-title{text-align:center;font-size:28px;color:var(--blue);margin-bottom:8px}
.section-subtitle{text-align:center;color:var(--text-light);margin-bottom:40px;font-size:15px}
.section.bg{background:var(--bg)}
/* ===== Service Cards ===== */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}
.card{background:var(--white);padding:28px 24px;border-radius:8px;box-shadow:var(--shadow);transition:.3s;text-align:center;border-bottom:3px solid transparent}
.card:hover{transform:translateY(-4px);border-bottom-color:var(--blue);box-shadow:0 8px 30px rgba(31,135,232,.15)}
.card .icon{width:60px;height:60px;margin:0 auto 16px;background:var(--blue-light);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;transition:.3s}
.card:hover .icon{background:var(--blue);color:#fff}
.card h3{font-size:17px;margin-bottom:8px}
.card p{color:var(--text-light);font-size:13px;line-height:1.7}
/* ===== Image Cards ===== */
.cards-img{display:grid;grid-template-columns:repeat(3,280px);gap:40px;justify-content:center}
.card-img{border-radius:8px;overflow:hidden;box-shadow:var(--shadow);transition:.3s;background:var(--white)}
.card-img:hover{transform:translateY(-4px);box-shadow:0 8px 30px rgba(31,135,232,.15)}
.card-img img{width:100%;height:200px;object-fit:cover;display:block}
.card-img .card-body{padding:18px 20px}
.card-img .card-body h3{font-size:16px;margin-bottom:6px;color:#333}
.card-img .card-body p{color:var(--text-light);font-size:13px;line-height:1.7}
/* ===== Gallery ===== */
.gallery{display:flex;overflow-x:auto;gap:16px;scroll-snap-type:x mandatory;padding-bottom:10px}
.gallery::-webkit-scrollbar{height:6px}
.gallery::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}
.gallery-item{flex:0 0 280px;scroll-snap-align:start;border-radius:8px;overflow:hidden;position:relative;box-shadow:var(--shadow)}
.gallery-item img{width:100%;height:200px;object-fit:cover;display:block;transition:.4s}
.gallery-item:hover img{transform:scale(1.08)}
.gallery-item .gallery-label{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(transparent,rgba(0,0,0,.7));color:#fff;padding:30px 14px 12px;font-size:14px;font-weight:500}
/* ===== Service Detail with Image ===== */
.service-block{display:grid;grid-template-columns:1fr 1fr;gap:30px;align-items:center;margin:30px 0;padding:24px;background:var(--white);border-radius:8px;box-shadow:var(--shadow)}
.service-block img{width:100%;border-radius:6px}
.service-block h2{color:var(--blue)!important;margin-top:0!important}
.service-block ul{padding-left:20px;color:var(--text-light)}
.service-block li{margin-bottom:6px;line-height:1.7}
/* ===== News with Image ===== */
.news-item .thumb{width:140px;min-width:140px;height:100px;border-radius:6px;overflow:hidden}
.news-item .thumb img{width:100%;height:100%;object-fit:cover}
/* ===== About Page ===== */
.about-img-wide{width:100%;border-radius:8px;box-shadow:var(--shadow);margin:20px 0}
/* ===== About Block ===== */
.about-block{display:grid;grid-template-columns:1fr 1fr;gap:50px;align-items:center}
.about-block img{width:100%;border-radius:8px;box-shadow:var(--shadow)}
.about-block h2{color:var(--blue);font-size:24px;margin-bottom:16px}
.about-block p{color:var(--text-light);margin-bottom:12px;line-height:1.8}
/* ===== Stats ===== */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;text-align:center;padding:30px 0}
.stat-circle{width:120px;height:120px;border-radius:50%;border:4px solid var(--blue);display:flex;flex-direction:column;align-items:center;justify-content:center;margin:0 auto 12px;transition:.3s}
.stat-circle:hover{background:var(--blue);color:#fff}
.stat-circle h3{font-size:28px;color:var(--blue);transition:.3s}
.stat-circle:hover h3{color:#fff}
.stat-circle p{font-size:12px;color:var(--text-light);margin-top:2px;transition:.3s}
.stat-circle:hover p{color:rgba(255,255,255,.8)}
/* ===== Contact Bar ===== */
.contact-bar{background:var(--blue);color:var(--white);text-align:center;padding:40px 20px}
.contact-bar h2{font-size:24px;margin-bottom:8px}
.contact-bar .phone{font-size:32px;font-weight:700;margin:8px 0}
.contact-bar .btn{display:inline-block;margin-top:16px;padding:12px 40px;background:var(--white);color:var(--blue);border-radius:30px;font-weight:600;transition:.3s}
.contact-bar .btn:hover{transform:translateY(-2px);box-shadow:0 4px 15px rgba(0,0,0,.2)}
/* ===== Footer ===== */
.footer{background:#1a2332;color:#ccc;padding:30px 20px 12px}
.footer-inner{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr;gap:40px}
@media(min-width:769px){.footer-inner{gap:18px}}
@media(min-width:769px){.footer-inner > div:nth-child(2){padding-left:100px}}
.footer h3{color:#fff;margin-bottom:16px;font-size:16px}
.footer p,.footer a{color:#fff;font-size:14px;text-decoration:none;line-height:2.2}
.footer-brand{display:flex;align-items:center;gap:24px}
.footer-logo img{height:100px;filter:brightness(0) invert(1)}
.footer-divider{width:1px;height:90px;background:rgba(255,255,255,.35);flex-shrink:0}
.footer .tagline{font-size:22px;font-weight:500;margin-bottom:2px}
.footer .badge{font-size:18px;opacity:.9;margin-bottom:4px}
.footer .slogan{color:var(--accent);margin-top:8px;font-weight:500;font-size:17px}
.footer .phone{font-size:18px;font-weight:600;margin:4px 0}
.footer a:hover{color:var(--white)}
.footer-bottom{text-align:center;margin-top:24px;padding-top:12px;border-top:1px solid rgba(255,255,255,.08);font-size:13px}
/* ===== Internal Pages ===== */
.page-header{margin-top:70px;background:linear-gradient(135deg,var(--blue),var(--blue-dark));color:var(--white);padding:60px 20px;text-align:center}
.page-header h1{font-size:30px;margin-bottom:8px}
.page-header p{opacity:.85}
/* ===== Contact ===== */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:40px}
.contact-info h3{color:var(--blue);margin-bottom:16px}
.contact-info p{margin-bottom:8px;color:var(--text-light)}
.contact-form input,.contact-form textarea{width:100%;padding:12px;margin-bottom:12px;border:1px solid #ddd;border-radius:6px;font-size:14px;transition:.2s}
.contact-form input:focus,.contact-form textarea:focus{border-color:var(--blue);outline:none;box-shadow:0 0 0 3px rgba(31,135,232,.15)}
.contact-form textarea{height:120px;resize:vertical}
.contact-form button{padding:12px 40px;background:var(--blue);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:15px;transition:.3s}
.contact-form button:hover{background:var(--blue-dark)}
/* ===== News ===== */
.news-list{max-width:800px;margin:0 auto}
.news-item{padding:24px 0;border-bottom:1px solid #eee;display:flex;gap:20px}
.news-item .date{color:var(--text-light);font-size:13px;min-width:80px}
.news-item h3{font-size:16px;margin-bottom:6px}
.news-item h3 a{color:#333;text-decoration:none}
.news-item h3 a:hover{color:var(--blue)}
.news-item p{color:var(--text-light);font-size:14px;line-height:1.7}
/* ===== Service Detail ===== */
.about-grid-2{display:grid;grid-template-columns:1fr 1fr;gap:30px}
.service-detail{max-width:800px;margin:0 auto}
.service-detail h2{color:var(--blue);margin:30px 0 12px;font-size:20px}
.service-detail ul{padding-left:20px;color:var(--text-light)}
.service-detail li{margin-bottom:6px;line-height:1.7}
/* ===== Responsive ===== */
@media(max-width:768px){
  .nav{display:none;flex-direction:column;position:absolute;top:70px;left:0;right:0;background:var(--white);padding:10px 0;box-shadow:var(--shadow);z-index:999}
  .nav.open{display:flex}
  .nav a{line-height:44px;padding:0 20px}
  .nav-toggle{display:flex}
  .video-banner .content h1{font-size:26px}
  .video-banner .content p{font-size:15px}
  .stats{grid-template-columns:repeat(2,1fr)}
  .contact-grid{grid-template-columns:1fr}
  .footer-inner{grid-template-columns:1fr}
  .about-block{grid-template-columns:1fr}
  .about-grid-2{grid-template-columns:1fr}
  .cards-img{grid-template-columns:repeat(2,1fr)}
  .cards{grid-template-columns:1fr 1fr}
  .service-block{grid-template-columns:1fr}
  .news-item .thumb{width:100px;min-width:100px;height:70px}
}
@media(max-width:480px){
  .cards{grid-template-columns:1fr}
  .cards-img{grid-template-columns:1fr}
  .video-banner .content h1{font-size:22px}
  .contact-bar .phone{font-size:24px}
  .stat-circle{width:100px;height:100px}
  .stat-circle h3{font-size:22px}
  .news-item .thumb{width:80px;min-width:80px;height:60px}
  .gallery-item{flex:0 0 100%}
}