*{margin:0;padding:0;box-sizing:border-box;font-family:"Microsoft YaHei",sans-serif;}
html,body{width:100%;overflow-x:hidden;}
.container{width:1200px;margin:0 auto;max-width:94%;}
.flex-wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;}
:root{--blue:#0F4C81;--gold:#D4AF37;--gray-bg:#F7F9FC;--text:#333;--light:#666;white:#fff;}

/* 头部导航 */
.header-nav{background:#fff;box-shadow:0 2px 12px #e8edf2;padding:14px 0;position:sticky;top:0;z-index:999}
.logo-box img{height:46px;vertical-align:middle}
.logo-text{font-size:22px;font-weight:bold;color:var(--blue);margin-left:8px}
.lang-switch a{margin:0 6px;color:#666;text-decoration:none;font-size:14px}
.lang-switch a.active{color:var(--gold);font-weight:bold}
.menu-btn{display:none;font-size:28px;color:#000;cursor:pointer;user-select:none;}
.nav-list{display:flex;gap:16px;align-items:center}
.nav-list a{text-decoration:none;color:#333;transition:.25s}
.nav-list a:hover{color:var(--gold)}
.btn-download-header{background:var(--blue);color:#fff !important;padding:8px 16px;border-radius:4px}

/* 按钮通用 */
.btn-blue{display:inline-block;background:var(--blue);color:#fff;padding:12px 28px;border-radius:4px;text-decoration:none;border:none;cursor:pointer}
.btn-gold{background:var(--gold);color:#fff;padding:12px 28px;border-radius:4px;text-decoration:none;border:none;cursor:pointer}
.btn-outline{border:1px solid var(--blue);color:var(--blue);padding:11px 28px;border-radius:4px;text-decoration:none;background:transparent}
.center-btn{text-align:center;margin-top:32px}

/* 顶部浮动风险提示 */
.risk-fixed{background:#fff8e8;border:1px solid #ffd480;padding:10px 0;font-size:13px;color:#b36b00;text-align:center}

/* Banner首屏 */
.home-banner{background:linear-gradient(135deg,#0F4C81,#1A65A8);color:#fff;padding:90px 0}
.banner-content h1{font-size:40px;margin-bottom:14px}
.banner-content h2{font-size:22px;font-weight:normal;opacity:0.9;margin-bottom:20px}
.banner-content p{max-width:720px;line-height:1.8;font-size:16px;margin-bottom:36px}
.banner-btns a{margin-right:18px}

/* 考察轮播 */
.home-inspect{padding:65px 0;background:var(--gray-bg)}
.home-inspect h3{text-align:center;font-size:26px;color:var(--blue);margin-bottom:36px}
.gallery-swiper{display:flex;gap:18px;overflow-x:auto;padding-bottom:14px}
.gallery-swiper::-webkit-scrollbar{height:6px}
.gallery-swiper::-webkit-scrollbar-thumb{background:#ccc;border-radius:3px}
.swiper-item{min-width:250px}
.swiper-item img{width:100%;height:170px;object-fit:cover;border-radius:6px}
.swiper-item p{text-align:center;margin-top:9px;color:var(--light)}

/* 相册网格 */
.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:36px}
.gallery-card img{width:100%;height:230px;object-fit:cover;border-radius:6px}
.gallery-caption{text-align:center;padding:9px}

/* APP下载页面 */
.app-page{padding:75px 0}
.app-wrap{display:flex;align-items:center;gap:55px}
.app-left h1{color:var(--blue);font-size:34px;margin-bottom:18px}
.download-box{display:flex;gap:28px;margin-top:32px}
.download-item{text-align:center;border:1px solid #eee;padding:22px;border-radius:8px;width:210px}
.app-right img{width:400px}

/* 底部 */
.footer{background:#0f1a28;color:#ccc;padding:48px 0;margin-top:70px}
.footer-row{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin-bottom:30px}
.risk-notice{background:#19273a;padding:18px;margin:26px 0;border-left:4px solid var(--gold)}
.copyright{text-align:center;margin-top:26px;padding-top:18px;border-top:1px solid #28394e;font-size:14px}

/* ========== 移动端适配 768px ========== */
@media(max-width:768px){
    .menu-btn{display:block;}
    .nav-list{
        position:absolute;top:110px;left:0;width:100%;background:#fff;
        flex-direction:column;padding:20px;box-shadow:0 8px 10px #ddd;
        display:none;
    }
    .nav-list.show{display:flex;}
    .banner-content h1{font-size:28px}
    .banner-content h2{font-size:18px}
    .banner-btns{display:flex;flex-direction:column;gap:14px}
    .banner-btns a{margin:0}
    .gallery-grid{grid-template-columns:repeat(1,1fr)}
    .app-wrap{flex-direction:column;text-align:center}
    .download-box{flex-direction:column;align-items:center}
    .app-right img{width:100%;max-width:320px;margin-top:30px}
    .footer-row{grid-template-columns:1fr}
    /* 移动端全局适配补充 */
@media screen and (max-width:768px){
    h1{font-size:26px !important;}
    h2{font-size:18px !important;}
    h3{font-size:22px !important;}
    .banner-btns{flex-direction:column;align-items:center;}
    .btn-blue,.btn-gold,.btn-outline{width:100%;max-width:280px;text-align:center;box-sizing:border-box;}
    .paper-grid,.news-list{gap:16px !important;}
    .swiper-item{min-width:220px !important;}
    .footer-row{grid-template-columns:1fr !important;gap:30px !important;}
    .header-nav .nav-list{top:106px !important;}
}
}
/* 全局科技增强 + 移动端适配 */
@media screen and (max-width:768px){
    h1{font-size:28px !important;}
    h2{font-size:20px !important;}
    h3{font-size:24px !important;}
    .banner-btns{flex-direction:column;align-items:center;}
    .btn-blue,.btn-gold,.btn-outline{width:100%;max-width:300px;text-align:center;box-sizing:border-box;}
    .paper-grid,.news-list{gap:20px !important;}
    .swiper-item{min-width:240px !important;}
    .footer-row{grid-template-columns:1fr !important;gap:40px !important;}
    .home-banner{padding:50px 0 !important;}
    .home-inspect,.home-whitepaper,.home-news,.home-app-block{padding:50px 0 !important;}
}