:root{--red:#DE0303;--red-dark:#A30000;--red-light:#FFF1F1;--ink:#1F2329;--gray:#646A73;--gray-light:#9A9A9A;--line:#EAEAEA;--bg:#F5F5F5;}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:14px;line-height:1.6}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.wrap{width:80%;max-width:1600px;margin:0 auto}

/* ===== 首页轮播 + 覆盖导航 ===== */
.banner{position:relative;width:100%}
.banner-box{position:relative;height:560px;overflow:hidden;background:#0f2439}
.banner-slide{position:absolute;inset:0;opacity:0;transition:opacity .6s;pointer-events:none}
.banner-slide.active{opacity:1;pointer-events:auto}
.banner-slide img{width:100%;height:100%;object-fit:cover}
.banner-slide .banner-empty{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.7);font-size:22px;letter-spacing:6px;background:linear-gradient(135deg,#7a0000,#de0303)}
.banner-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.18) 42%,rgba(0,0,0,.5) 100%)}
.hero-nav{position:absolute;top:0;left:0;right:0;z-index:30;background:linear-gradient(180deg,rgba(0,0,0,.55) 0%,rgba(0,0,0,.18) 65%,transparent 100%)}
.hero-nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px;padding:0 10%}
.brand{display:flex;align-items:center;gap:10px;flex-shrink:0}
.brand img{height:42px;width:auto}
.brand b{font-size:24px;color:#fff;letter-spacing:2px}
.city-switch{position:relative}
.city-btn{display:flex;align-items:center;gap:3px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.55);color:#fff;padding:2px 10px;border-radius:12px;font-size:12px;cursor:pointer;transition:background .2s}
.city-btn:hover{background:rgba(255,255,255,.28)}
.city-list{position:absolute;top:calc(100% + 6px);left:0;background:#fff;color:var(--ink);border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.14);min-width:140px;padding:6px 0;display:none;z-index:60}
.city-list.open{display:block}
.city-list a{display:block;padding:8px 16px;font-size:13px;cursor:pointer}
.city-list a:hover{background:var(--red-light);color:var(--red)}
.city-list a.on{color:var(--red);font-weight:600}
.hero-nav .nav{display:flex;gap:2px;justify-content:center;flex:1}
.hero-nav .nav a{padding:8px 14px;font-size:15px;color:rgba(255,255,255,.92);border-radius:6px;cursor:pointer;transition:color .2s,background .2s;white-space:nowrap}
.hero-nav .nav a:hover,.hero-nav .nav a.on{color:#fff;background:rgba(255,255,255,.16)}
.hero-nav .nav a.on{font-weight:600}
.hero-user{display:flex;align-items:center;gap:10px;flex-shrink:0}
.hero-user a{color:#fff;font-size:14px;padding:6px 16px;border:1px solid rgba(255,255,255,.6);border-radius:18px;cursor:pointer;transition:background .2s;white-space:nowrap}
.hero-user a:hover{background:rgba(255,255,255,.2)}
.hero-user a.reg{background:#fff;color:var(--red);border-color:#fff;font-weight:600}
.hero-user a.reg:hover{background:var(--red-light)}
.burger{display:none;background:none;border:1px solid rgba(255,255,255,.6);border-radius:6px;padding:8px 10px;color:#fff;font-size:16px;cursor:pointer}
.slogan{position:absolute;top:40%;left:50%;transform:translate(-50%,-50%);text-align:center;color:#fff;z-index:10;width:90%}
.slogan h2{font-size:58px;font-weight:700;letter-spacing:12px;text-shadow:0 2px 14px rgba(0,0,0,.45)}
.slogan p{margin-top:16px;font-size:19px;letter-spacing:5px;opacity:.96;text-shadow:0 1px 6px rgba(0,0,0,.4)}
.hero-search{position:absolute;top:64%;left:50%;transform:translateX(-50%);z-index:10;display:flex;align-items:center;background:#fff;border-radius:30px;box-shadow:0 12px 34px rgba(0,0,0,.28);overflow:hidden;width:720px;max-width:92%}
.hero-search select{border:none;outline:none;background:#F6F6F6;padding:13px 10px 13px 20px;font-size:14px;color:var(--ink);cursor:pointer;flex-shrink:0;max-width:130px}
.hero-search input{flex:1;border:none;outline:none;padding:13px 16px;font-size:15px;min-width:0}
.hero-search button{background:var(--red);color:#fff;border:none;padding:13px 32px;font-size:15px;cursor:pointer;transition:background .2s;flex-shrink:0}
.hero-search button:hover{background:var(--red-dark)}
.banner-arrow{position:absolute;top:50%;transform:translateY(-50%);width:42px;height:42px;border-radius:50%;background:rgba(0,0,0,.32);color:#fff;border:none;font-size:18px;cursor:pointer;z-index:12;transition:background .2s;display:flex;align-items:center;justify-content:center}
.banner-arrow:hover{background:var(--red)}
.banner-arrow.prev{left:20px}
.banner-arrow.next{right:20px}
.banner-dots{position:absolute;bottom:18px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:12}
.banner-dots i{width:10px;height:10px;border-radius:50%;background:rgba(255,255,255,.65);cursor:pointer;transition:background .3s}
.banner-dots i.on{background:var(--red);width:24px;border-radius:6px}

/* ===== 内容区 ===== */
.section{padding:30px 0 8px}
.sec-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;border-left:5px solid var(--red);padding-left:12px}
.sec-head h2{font-size:22px;font-weight:700}
.sec-more{font-size:13px;color:var(--gray);cursor:pointer}
.sec-more:hover{color:var(--red)}
.grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:26px}
.grid4b{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:26px}
.card{background:#fff;border-radius:8px;overflow:hidden;box-shadow:0 1px 6px rgba(0,0,0,.06);cursor:pointer;transition:transform .2s,box-shadow .2s}
.card:hover{transform:translateY(-4px);box-shadow:0 8px 20px rgba(0,0,0,.12)}
.card-img{position:relative;height:auto;aspect-ratio:3/2;overflow:hidden;background:#f2f3f5}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.card:hover .card-img img{transform:scale(1.05)}
.card-img .empty{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#c9cdd4;font-size:12px}
.flag{position:absolute;left:10px;top:10px;background:var(--red);color:#fff;font-size:12px;padding:2px 10px;border-radius:4px}
.flag.gray{background:#555;opacity:.92}
.card-body{padding:12px 14px 14px}
.card-body h3{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-body h3:hover{color:var(--red)}
.card-body .sub{font-size:12px;color:var(--gray);margin-top:4px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-body .price{margin-top:8px;color:var(--red);font-size:20px;font-weight:700}
.card-body .price i,.card-body .price2 i{font-style:normal;font-size:12px;font-weight:400;color:var(--gray);margin-left:2px}
.card-body .price2{margin-top:8px;color:var(--red);font-size:20px;font-weight:700}
.card-body .addr{font-size:12px;color:var(--gray);margin-top:2px}

/* ===== 资讯 ===== */
.news-wrap{display:grid;grid-template-columns:1.1fr 2fr;gap:24px;background:#fff;border-radius:8px;padding:20px 24px;box-shadow:0 1px 6px rgba(0,0,0,.06);margin-bottom:10px}
.news-top{cursor:pointer}
.news-top .imgbox{height:190px;border-radius:8px;overflow:hidden;margin-bottom:12px;background:#f2f3f5}
.news-top .imgbox img{width:100%;height:100%;object-fit:cover}
.news-top .imgbox .empty{width:100%;height:100%;display:flex;align-items:center;justify-content:center;color:#c9cdd4;font-size:12px}
.news-top h3{font-size:18px;line-height:1.5;font-weight:600}
.news-top h3:hover{color:var(--red)}
.news-top p{font-size:13px;color:var(--gray);margin-top:8px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-meta{display:flex;gap:16px;font-size:12px;color:var(--gray-light);margin-top:10px}
.news-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 0;border-bottom:1px dashed var(--line);cursor:pointer}
.news-list li:last-child{border-bottom:none}
.news-list .t{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.news-list .t:hover{color:var(--red)}
.news-list .m{flex-shrink:0;font-size:12px;color:var(--gray-light);display:flex;gap:12px;align-items:center}

/* ===== 友链与底部 ===== */
.links{padding:26px 0 8px}
.links-box{background:#fff;border-radius:8px;padding:16px 20px;box-shadow:0 1px 6px rgba(0,0,0,.06)}
.links-box b{font-size:13px;color:var(--gray);margin-right:12px}
.links-box a{font-size:13px;color:var(--gray);margin-right:16px;cursor:pointer}
.links-box a:hover{color:var(--red)}
.footer{margin-top:34px;background:#2B2B2B;color:#B5B5B5}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;padding:36px 0 24px}
.fbrand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.fbrand img{height:34px}
.fbrand b{font-size:20px;color:#fff}
.footer p{font-size:13px;line-height:2}
.footer h4{color:#fff;font-size:15px;margin-bottom:10px}
.footer h4 a{display:block;font-size:13px;color:#B5B5B5;font-weight:400;margin-bottom:6px;cursor:pointer}
.footer h4 a:hover{color:#fff}
.fcols{display:grid;grid-template-columns:1fr 1fr;column-gap:24px}
.footer-bottom{border-top:1px solid #3D3D3D;padding:14px 0;text-align:center;font-size:12px;color:#8A8A8A}
.footer-bottom a{margin:0 8px;cursor:pointer;color:#8A8A8A}
.footer-bottom a:hover{color:#fff}

@media (max-width:1024px){
  .wrap{width:92%}
  .hero-nav .nav{display:none;position:absolute;top:68px;left:0;right:0;background:rgba(122,0,0,.97);flex-direction:column;padding:8px 16px 16px;z-index:40}
  .hero-nav .nav.open{display:flex}
  .hero-nav .burger{display:block}
  .grid4,.grid4b{grid-template-columns:repeat(2,1fr)}
  .hero-nav-inner{padding:0 4%}
  .banner-box{height:440px}
}
@media (max-width:768px){
  .wrap{width:94%}
  .banner-box{height:400px}
  .slogan{top:34%}
  .slogan h2{font-size:32px;letter-spacing:8px}
  .slogan p{font-size:14px;letter-spacing:3px;margin-top:10px}
  .hero-search{top:62%;width:88%}
  .hero-search select{display:none}
  .hero-search button{padding:11px 18px;font-size:14px}
  .news-wrap{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr;gap:20px}
}
@media (max-width:480px){
  .banner-box{height:360px}
  .grid4,.grid4b{grid-template-columns:1fr}
  .card-img{aspect-ratio:3/2}
}