*{margin:0;padding:0;box-sizing:border-box}
:root{--med-blue:#0066B3;--med-deep:#003d70;--med-light:#eaf4fb;--med-cyan:#00a0d2;--text:#2b2b2b;--text2:#666;--gray:#f7f9fb}
body{font-family:"Source Han Sans","PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);line-height:1.75;background:#fff}
a{text-decoration:none;color:inherit}
.container{max-width:1200px;margin:0 auto;padding:0 24px}
.time-bar{background:var(--med-deep);color:#bcd9ee;font-size:12px;padding:6px 0}
.time-bar-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;justify-content:space-between}
.tb-status::before{content:"";display:inline-block;width:7px;height:7px;background:#5fd08a;border-radius:50%;margin-right:8px}
.site-header{background:#fff;position:sticky;top:0;z-index:100;box-shadow:0 1px 6px rgba(0,61,112,.08)}
.nav-wrap{display:flex;align-items:center;height:70px;gap:36px}
.logo{font-size:25px;font-weight:700;color:var(--med-deep)}
.logo span{color:var(--med-blue)}
.main-nav ul{display:flex;list-style:none;gap:2px}
.main-nav a{display:block;padding:10px 16px;font-size:15px;position:relative;transition:color .2s}
.main-nav a:hover,.main-nav a.active{color:var(--med-blue)}
.main-nav a.active::after{content:"";position:absolute;left:16px;right:16px;bottom:2px;height:2px;background:var(--med-blue)}
.btn-nav-cta{margin-left:auto;background:var(--med-blue);color:#fff;padding:10px 26px;font-size:14px;border-radius:4px;transition:.2s}
.btn-nav-cta:hover{background:var(--med-deep)}
/* Hero 全屏大图式 */
.med-hero{height:560px;background:linear-gradient(rgba(0,40,80,.72),rgba(0,80,140,.55)),linear-gradient(135deg,#003d70,#0066B3);color:#fff;display:flex;align-items:center;position:relative}
.med-hero .hero-inner{max-width:680px}
.med-hero .hero-slogan{font-size:20px;color:#bfe0f5;letter-spacing:6px;margin-bottom:18px}
.med-hero h1{font-size:50px;font-weight:700;line-height:1.3;margin-bottom:22px}
.med-hero p{font-size:18px;color:#dcecf8;margin-bottom:36px;line-height:1.8}
.hero-cta-row{display:flex;gap:16px}
.btn-blue{background:var(--med-cyan);color:#fff;padding:14px 36px;font-size:16px;border-radius:4px;transition:.2s}
.btn-blue:hover{background:#0088b3}
.btn-line{border:1.5px solid #fff;color:#fff;padding:13px 34px;border-radius:4px;font-size:15px}
.btn-line:hover{background:#fff;color:var(--med-deep)}
/* 通用区块标题 */
.sec{padding:72px 0}
.sec-gray{background:var(--gray)}
.sec-title{text-align:center;margin-bottom:14px}
.sec-title h2{font-size:32px;color:var(--med-deep);font-weight:700}
.sec-title .sub{color:var(--text2);font-size:15px;margin-top:8px}
.sec-title::after{content:"";display:block;width:54px;height:3px;background:var(--med-cyan);margin:16px auto 0}
/* 关于我们 左文右图 */
.about-flex{display:grid;grid-template-columns:1.1fr .9fr;gap:56px;align-items:center}
.about-text h2{font-size:30px;color:var(--med-deep);margin-bottom:8px}
.about-text .en{color:var(--med-cyan);font-size:13px;letter-spacing:2px;text-transform:uppercase;margin-bottom:20px}
.about-text p{font-size:15.5px;color:var(--text2);margin-bottom:16px;line-height:1.95}
.link-more{display:inline-block;margin-top:10px;color:var(--med-blue);font-weight:600;border:1px solid var(--med-blue);padding:9px 28px;border-radius:4px;font-size:14px;transition:.2s}
.link-more:hover{background:var(--med-blue);color:#fff}
.about-visual{height:360px;background:linear-gradient(135deg,#0066B3,#00a0d2);border-radius:8px;display:flex;align-items:center;justify-content:center;flex-direction:column;color:#fff;text-align:center;padding:30px}
.about-visual .big{font-size:64px;font-weight:700}
.about-visual .cap{font-size:16px;margin-top:10px;letter-spacing:2px}
/* 数据统计 */
.med-data{background:var(--med-deep);color:#fff;padding:60px 0}
.data-row{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;text-align:center}
.data-item .d-num{font-size:46px;font-weight:700;color:#7fd0f5}
.data-item .d-num small{font-size:20px}
.data-item .d-label{font-size:15px;color:#c5dcef;margin-top:8px}
/* 产品中心3分类 */
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.prod-card{background:#fff;border:1px solid #e3edf4;border-radius:8px;overflow:hidden;transition:transform .25s,box-shadow .25s}
.prod-card:hover{transform:translateY(-6px);box-shadow:0 14px 34px rgba(0,102,179,.14)}
.prod-thumb{height:180px;display:flex;align-items:center;justify-content:center;font-size:46px;color:#fff}
.pt1{background:linear-gradient(135deg,#0066B3,#36a3e0)}
.pt2{background:linear-gradient(135deg,#00897b,#4db6ac)}
.pt3{background:linear-gradient(135deg,#5e6ec0,#8fa3e0)}
.prod-body{padding:26px}
.prod-body h3{font-size:20px;color:var(--med-deep);margin-bottom:10px}
.prod-body p{font-size:14px;color:var(--text2);margin-bottom:16px;line-height:1.8}
.prod-body a{color:var(--med-blue);font-size:14px;font-weight:600}
/* 步骤 */
.step-row{display:grid;grid-template-columns:repeat(4,1fr);gap:0;counter-reset:step}
.step-box{padding:36px 26px;background:#fff;border-right:1px dashed #d5e4ef;position:relative}
.step-box:last-child{border-right:none}
.step-box .sn{width:44px;height:44px;border-radius:50%;background:var(--med-light);color:var(--med-blue);font-size:20px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-bottom:16px}
.step-box h3{font-size:18px;color:var(--med-deep);margin-bottom:8px}
.step-box p{font-size:13.5px;color:var(--text2);line-height:1.7}
/* 新闻焦点 长列表 */
.news-list{max-width:900px;margin:0 auto}
.news-li{display:flex;gap:24px;padding:20px 12px;border-bottom:1px solid #e8eff4;align-items:flex-start;transition:background .2s}
.news-li:hover{background:var(--med-light)}
.news-date{flex-shrink:0;width:96px;text-align:center;background:var(--med-light);border-radius:6px;padding:10px 0}
.news-date .day{font-size:26px;font-weight:700;color:var(--med-blue);line-height:1}
.news-date .ym{font-size:12px;color:var(--text2);margin-top:4px}
.news-li-content h3{font-size:16.5px;color:var(--med-deep);margin-bottom:6px;font-weight:600}
.news-li-content p{font-size:13.5px;color:var(--text2);line-height:1.7}
/* 全球布局 */
.global-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.global-card{background:#fff;border-radius:8px;padding:34px 24px;text-align:center;border-top:3px solid var(--med-cyan);box-shadow:0 4px 16px rgba(0,61,112,.06)}
.global-card .gc-rank{font-size:30px;font-weight:700;color:var(--med-blue)}
.global-card h3{font-size:17px;margin:10px 0 6px;color:var(--med-deep)}
.global-card p{font-size:13px;color:var(--text2)}
/* 服务热线条 */
.hotline{background:linear-gradient(120deg,var(--med-blue),var(--med-cyan));color:#fff;padding:48px 0;text-align:center}
.hotline h2{font-size:28px;margin-bottom:10px}
.hotline .tel{font-size:40px;font-weight:700;letter-spacing:2px;margin:14px 0}
.hotline p{opacity:.92}
/* FAQ */
.faq-wrap{max-width:860px;margin:0 auto}
.faq-item{border:1px solid #e3edf4;border-radius:6px;margin-bottom:12px;background:#fff}
.faq-item summary{padding:18px 24px;font-size:16px;font-weight:600;color:var(--med-deep);cursor:pointer;list-style:none;display:flex;justify-content:space-between}
.faq-item summary::after{content:"+";color:var(--med-blue);font-size:22px}
.faq-item[open] summary::after{content:"−"}
.faq-item p{padding:0 24px 18px;font-size:14.5px;color:var(--text2);line-height:1.9}
/* 内页 */
.page-hero{background:linear-gradient(rgba(0,40,80,.8),rgba(0,80,140,.7)),linear-gradient(135deg,#003d70,#0066B3);color:#fff;padding:58px 0}
.page-hero h1{font-size:36px;margin-bottom:10px}
.page-hero p{color:#dcecf8;font-size:16px}
.content-section{padding:56px 0}
.content-block{margin-bottom:38px}
.content-block h2{font-size:23px;color:var(--med-deep);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--med-light)}
.content-block h3{font-size:18px;color:var(--med-deep);margin:20px 0 8px}
.content-block p{font-size:15px;color:var(--text2);margin-bottom:13px;line-height:1.95}
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.price-card{border:1px solid #e3edf4;border-radius:8px;padding:34px 26px;text-align:center;background:#fff}
.price-card.featured{border:2px solid var(--med-blue);position:relative;box-shadow:0 10px 30px rgba(0,102,179,.12)}
.price-card.featured::before{content:"推荐";position:absolute;top:-12px;left:50%;transform:translateX(-50%);background:var(--med-blue);color:#fff;padding:2px 18px;font-size:12px;border-radius:12px}
.price-card h3{font-size:20px;color:var(--med-deep)}
.price-card .price{font-size:42px;font-weight:700;color:var(--med-blue);margin:14px 0}
.price-card .price small{font-size:14px;color:var(--text2);font-weight:400}
.price-card ul{list-style:none;text-align:left;margin:22px 0}
.price-card li{padding:8px 0;font-size:14px;color:var(--text2);border-bottom:1px solid #f0f5f9}
.price-card li::before{content:"✓ ";color:var(--med-blue);font-weight:700}
.dl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.dl-card{display:flex;gap:18px;align-items:center;padding:26px;border:1px solid #e3edf4;border-radius:8px;background:#fff}
.dl-card:hover{border-color:var(--med-blue)}
.dl-icon{width:58px;height:58px;background:var(--med-light);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:26px;flex-shrink:0}
.dl-card h3{font-size:18px;color:var(--med-deep)}
.dl-card p{font-size:13px;color:var(--text2);margin:4px 0 8px}
.dl-card a{color:var(--med-blue);font-weight:600;font-size:14px}
.site-footer{background:var(--med-deep);color:#b5d0e4;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:40px}
.footer-logo{font-size:22px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-logo span{color:#7fd0f5}
.footer-brand p{font-size:13px;line-height:1.8}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:13px;color:#b5d0e4}
.footer-links a:hover{color:#fff}
.footer-col p{font-size:13px;margin-bottom:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:20px 0;display:flex;justify-content:space-between;font-size:12px}
@media(max-width:900px){.about-flex,.data-row,.prod-grid,.step-row,.global-grid,.price-grid,.dl-grid,.footer-grid{grid-template-columns:1fr}.step-box{border-right:none;border-bottom:1px dashed #d5e4ef}.med-hero h1{font-size:32px}.main-nav{display:none}}