:root{
  --xm-red:#C8102E;
  --xm-red-dark:#a50d26;
  --white:#ffffff;
  --gray-bg:#f7f8fa;
  --text:#2b2b2b;
  --text-soft:#5c6470;
  --border:#e8ebef;
  --up:#12a150;
  --down:#e0392c;
  --radius:16px;
  --shadow:0 8px 30px rgba(20,30,50,.06);
  --shadow-hover:0 14px 40px rgba(20,30,50,.12);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--text);background:var(--white);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
ul{list-style:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:11px 24px;border-radius:999px;font-weight:600;font-size:14px;
  cursor:pointer;transition:.25s;border:1px solid transparent;white-space:nowrap}
.btn-lg{padding:14px 32px;font-size:16px}
.btn-primary{background:var(--xm-red);color:#fff}
.btn-primary:hover{background:var(--xm-red-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(200,16,46,.28)}
.btn-ghost{background:transparent;color:var(--text);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--xm-red);color:var(--xm-red)}
.btn-outline{background:#fff;color:var(--xm-red);border-color:var(--xm-red)}
.btn-outline:hover{background:var(--xm-red);color:#fff}
.btn-light{background:#fff;color:var(--xm-red)}
.btn-light:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.15)}

.site-header{position:fixed;top:0;left:0;right:0;z-index:100;background:#fff;
  transition:box-shadow .3s;border-bottom:1px solid transparent}
.site-header.scrolled{box-shadow:0 4px 20px rgba(20,30,50,.08);border-bottom-color:var(--border)}
.header-inner{max-width:1180px;margin:0 auto;padding:0 20px;height:68px;
  display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px}
.brand img{height:36px;width:auto}
.brand-name{font-weight:800;font-size:19px;color:var(--xm-red);letter-spacing:.5px}
.main-nav{display:flex;align-items:center;gap:28px}
.main-nav>ul{display:flex;gap:26px}
.main-nav>ul li a{font-weight:500;font-size:15px;color:var(--text);position:relative;padding:6px 0;transition:.2s}
.main-nav>ul li a:hover{color:var(--xm-red)}
.main-nav>ul li a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:var(--xm-red);transition:.25s}
.main-nav>ul li a:hover::after{width:100%}
.nav-cta .btn{padding:9px 20px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--text);border-radius:2px;transition:.3s}
.header-spacer{height:68px}

.hero{background:linear-gradient(160deg,#fff 0%,#fdf1f3 55%,#f7f8fa 100%);padding:70px 0 80px}
.hero-inner{max-width:1180px;margin:0 auto;padding:0 20px;display:grid;
  grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.hero-tag{display:inline-block;background:rgba(200,16,46,.08);color:var(--xm-red);
  font-size:13px;font-weight:600;padding:6px 14px;border-radius:999px;margin-bottom:18px}
.hero-text h1{font-size:44px;line-height:1.25;font-weight:800;letter-spacing:.5px;margin-bottom:18px}
.hero-text>p{font-size:17px;color:var(--text-soft);max-width:560px;margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;max-width:560px}
.hero-stats li{background:#fff;border:1px solid var(--border);border-radius:14px;padding:16px 10px;text-align:center}
.hero-stats b{display:block;font-size:22px;color:var(--xm-red);font-weight:800}
.hero-stats span{font-size:13px;color:var(--text-soft)}

.hero-quote{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;border:1px solid var(--border)}
.quote-head{font-weight:700;font-size:16px;margin-bottom:14px;padding-bottom:12px;border-bottom:1px solid var(--border);display:flex;align-items:center;gap:8px}
.quote-head::before{content:"";width:9px;height:9px;border-radius:50%;background:var(--up);box-shadow:0 0 0 4px rgba(18,161,80,.15)}
.quote-list li{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;padding:11px 4px;border-bottom:1px dashed var(--border)}
.quote-list .sym{font-weight:600}
.quote-list .px{font-variant-numeric:tabular-nums;font-weight:700;text-align:right;transition:color .3s}
.quote-list .chg{font-size:13px;text-align:right;min-width:64px}
.up{color:var(--up)}
.down{color:var(--down)}
.quote-note{display:block;margin-top:12px;color:var(--text-soft);font-size:12px}

.section{padding:70px 0}
.section-alt{background:var(--gray-bg)}
.section-head{text-align:center;margin-bottom:44px}
.section-head h2{font-size:32px;font-weight:800;margin-bottom:10px}
.section-head p{color:var(--text-soft);font-size:16px}
.section-head.left{margin-bottom:24px}
.more-link{color:var(--xm-red);font-weight:600;font-size:15px}
.more-link:hover{text-decoration:underline}

.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:28px;transition:.28s}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow-hover);border-color:transparent}
.card .ic{font-size:34px;margin-bottom:14px}
.card h3{font-size:19px;font-weight:700;margin-bottom:10px}
.card p{color:var(--text-soft);font-size:14px}

.account{position:relative;display:flex;flex-direction:column}
.account-hot{border:2px solid var(--xm-red);box-shadow:var(--shadow)}
.account .badge{position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--xm-red);color:#fff;font-size:12px;font-weight:600;padding:4px 14px;border-radius:999px}
.account-desc{margin-bottom:16px}
.account-spec{margin-bottom:22px}
.account-spec li{padding:8px 0;border-bottom:1px dashed var(--border);font-size:14px;color:var(--text-soft)}
.account .btn{margin-top:auto;width:100%}

.platform-os{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 20px}
.platform-os span{background:var(--gray-bg);border:1px solid var(--border);color:var(--text-soft);
  font-size:12px;padding:5px 12px;border-radius:8px}

.promo .btn{margin-top:16px}

.cat-tags{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:34px}
.cat-tag{background:#fff;border:1px solid var(--border);padding:8px 20px;border-radius:999px;
  font-size:14px;font-weight:500;transition:.2s}
.cat-tag:hover{border-color:var(--xm-red);color:var(--xm-red);transform:translateY(-2px)}

.news-grid .news-item{display:flex;flex-direction:column;overflow:hidden;padding:0}
.news-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--gray-bg)}
.news-thumb img{width:100%;height:100%;object-fit:cover;transition:.4s}
.news-item:hover .news-thumb img{transform:scale(1.06)}
.news-body{padding:20px}
.news-date{color:var(--xm-red);font-size:13px;font-weight:600}
.news-body h3{font-size:17px;margin:8px 0 10px;line-height:1.5}
.news-body p{color:var(--text-soft);font-size:14px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.cta-band{background:linear-gradient(135deg,var(--xm-red),var(--xm-red-dark));color:#fff;padding:60px 0;text-align:center}
.cta-band h2{font-size:30px;font-weight:800;margin-bottom:12px}
.cta-band p{opacity:.92;margin-bottom:26px;font-size:16px}

.page-banner{background:linear-gradient(160deg,#fdf1f3,#f7f8fa);padding:46px 0}
.page-banner h1{font-size:30px;font-weight:800;margin-bottom:10px}
.crumb{color:var(--text-soft);font-size:14px}
.crumb a:hover{color:var(--xm-red)}

.page-layout{display:grid;grid-template-columns:1fr 320px;gap:36px;padding-top:44px;padding-bottom:60px}
.article-list li{display:flex;gap:20px;background:#fff;border:1px solid var(--border);
  border-radius:14px;padding:18px;margin-bottom:20px;transition:.25s}
.article-list li:hover{box-shadow:var(--shadow-hover);transform:translateY(-3px)}
.article-list .thumb{flex:0 0 200px;height:126px;border-radius:12px;overflow:hidden;background:var(--gray-bg)}
.article-list .thumb img{width:100%;height:100%;object-fit:cover}
.article-list .info{flex:1;display:flex;flex-direction:column}
.article-list .info h2{font-size:19px;margin-bottom:8px}
.article-list .info h2 a:hover{color:var(--xm-red)}
.article-list .info p{color:var(--text-soft);font-size:14px;flex:1;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-list .date{color:var(--text-soft);font-size:13px;margin-top:8px}

.pagination{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin-top:30px}
.pagination a{padding:8px 15px;border:1px solid var(--border);border-radius:10px;font-size:14px;transition:.2s;background:#fff}
.pagination a:hover{background:var(--xm-red);color:#fff;border-color:var(--xm-red)}

.side-box{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:22px;margin-bottom:22px}
.side-box h3{font-size:17px;font-weight:700;margin-bottom:14px;padding-bottom:12px;border-bottom:2px solid var(--xm-red);display:inline-block}
.side-menu li,.side-news li{padding:9px 0;border-bottom:1px dashed var(--border);font-size:14px}
.side-menu li a:hover,.side-news li a:hover{color:var(--xm-red)}
.side-cta{background:linear-gradient(160deg,#fff,#fdf1f3)}
.side-cta p{color:var(--text-soft);font-size:14px;margin-bottom:16px}
.side-cta .btn{width:100%}

.article-detail{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:34px}
.article-title{font-size:28px;font-weight:800;line-height:1.4;margin:14px 0}
.article-meta{display:flex;flex-wrap:wrap;gap:18px;color:var(--text-soft);font-size:13px;
  padding-bottom:20px;margin-bottom:24px;border-bottom:1px solid var(--border)}
.article-content{font-size:16px;line-height:1.9;color:#3a3f47}
.article-content p{margin-bottom:16px}
.article-content img{border-radius:10px;margin:16px 0}
.article-content h2,.article-content h3{margin:24px 0 12px}
.risk-note{background:#fdf1f3;border-left:4px solid var(--xm-red);border-radius:10px;
  padding:16px 18px;margin:26px 0;font-size:13px;color:var(--text-soft)}
.article-nav{display:flex;flex-direction:column;gap:10px;padding-top:20px;border-top:1px solid var(--border);font-size:14px}
.article-nav a:hover{color:var(--xm-red)}
.related{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:26px;margin-top:24px}
.related h3{font-size:18px;font-weight:700;margin-bottom:14px}
.related li{display:flex;justify-content:space-between;gap:16px;padding:9px 0;border-bottom:1px dashed var(--border);font-size:14px}
.related li a:hover{color:var(--xm-red)}
.related li span{color:var(--text-soft);font-size:13px;white-space:nowrap}

.site-footer{background:#1c1f26;color:#c4c9d2;padding-top:56px}
.footer-top{max-width:1180px;margin:0 auto;padding:0 20px 40px;display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:36px}
.footer-brand{font-size:20px;font-weight:800;color:#fff;margin-bottom:14px}
.footer-about p{font-size:14px;line-height:1.8;color:#8b93a1}
.footer-col h4{color:#fff;font-size:16px;margin-bottom:16px}
.footer-col ul li{padding:6px 0;font-size:14px}
.footer-col ul li a:hover{color:var(--xm-red)}
.footer-contact li{color:#8b93a1;margin-bottom:6px}
.footer-col .btn{margin-top:14px}
.regulation,.risk-warning{max-width:1180px;margin:0 auto;padding:16px 20px;font-size:12.5px;line-height:1.8;color:#8b93a1}
.regulation strong,.risk-warning strong{color:#e0392c}
.risk-warning{background:rgba(224,57,44,.06);border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);border-radius:10px;margin-bottom:8px}
.footer-links{max-width:1180px;margin:0 auto;padding:14px 20px;display:flex;flex-wrap:wrap;gap:14px;font-size:13px}
.footer-links a{color:#8b93a1}
.footer-links a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.08);margin-top:14px;padding:22px 20px;
  text-align:center;font-size:13px;color:#8b93a1}
.footer-bottom a{color:#8b93a1}
.footer-bottom a:hover{color:#fff}
.footer-perf{margin-top:6px;opacity:.6}

.back-top{position:fixed;right:24px;bottom:24px;width:46px;height:46px;border-radius:50%;
  background:var(--xm-red);color:#fff;display:flex;align-items:center;justify-content:center;
  font-size:20px;box-shadow:0 8px 24px rgba(200,16,46,.35);opacity:0;visibility:hidden;
  transform:translateY(12px);transition:.3s;z-index:90}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.back-top:hover{background:var(--xm-red-dark)}

@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-text h1{font-size:34px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .page-layout{grid-template-columns:1fr}
  .footer-top{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:720px){
  .nav-toggle{display:flex}
  .main-nav{position:fixed;top:68px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:stretch;gap:0;padding:10px 20px 20px;box-shadow:var(--shadow);
    max-height:0;overflow:hidden;transition:max-height .35s ease;border-top:1px solid var(--border)}
  .main-nav.open{max-height:520px}
  .main-nav>ul{flex-direction:column;gap:0}
  .main-nav>ul li a{display:block;padding:13px 0;border-bottom:1px solid var(--border)}
  .nav-cta{margin-top:14px}
  .nav-cta .btn{width:100%}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .hero-text h1{font-size:29px}
  .section{padding:48px 0}
  .section-head h2{font-size:26px}
  .article-list li{flex-direction:column}
  .article-list .thumb{flex:none;width:100%;height:180px}
  .footer-top{grid-template-columns:1fr}
  .article-detail{padding:22px}
}