*{box-sizing:border-box}
html,body{width:100%;overflow-x:hidden}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC",Arial,sans-serif;color:#172033;background:#f6f7fb;font-size:16px;line-height:1.76}
a{color:inherit;text-decoration:none}
img,iframe,video{max-width:100%}
.container{width:min(1160px,calc(100% - 32px));margin:auto}
.site-header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);border-bottom:1px solid #e6ebf2}
.nav{min-height:68px;display:flex;align-items:center;justify-content:space-between;gap:18px}
.brand{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:800;color:#342f5e}
.brand-mark{display:grid;place-items:center;width:42px;height:42px;border-radius:6px;background:#342f5e;color:white}
nav{display:flex;gap:16px;flex-wrap:wrap;color:#3f4d65;font-size:15px}
nav a:hover{color:#6fb7c8}
.hero{padding:70px 0;background:linear-gradient(135deg,#fff 0%,#f6f7fb 100%)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:30px;align-items:center}
.eyebrow{margin:0 0 10px;color:#6fb7c8;font-size:13px;font-weight:800;letter-spacing:0}
h1{margin:0;color:#342f5e;font-size:40px;line-height:1.22}
h2{margin:0 0 14px;color:#342f5e;font-size:28px;line-height:1.3}
h3{margin:0 0 8px;color:#342f5e;font-size:20px}
p{color:#52617a}
.lead{font-size:18px;max-width:720px}
.button{display:inline-flex;align-items:center;padding:12px 18px;border-radius:6px;background:#342f5e;color:white;font-weight:800}
.button.alt{background:#6fb7c8}
.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}
.card,.article-card,.media-card,.tag-card,.article-body,.info-box{background:white;border:1px solid #e5ebf3;border-radius:6px;padding:22px;}
.hero-img,.home-img,.article-cover{display:block;width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:6px}
.section{padding:58px 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:18px;margin-bottom:20px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.article-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.article-card a{display:block;font-size:18px;font-weight:800;color:#342f5e}
.meta{font-size:13px;color:#77859a}
.breadcrumb{font-size:14px;color:#68768c;margin-bottom:18px}
.page-hero{padding:54px 0 32px;background:white;border-bottom:1px solid #e5ebf3}
.article-body{max-width:900px;margin:34px auto 58px}
.article-body p{font-size:17px}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:24px}
.tag-list{display:flex;gap:8px;flex-wrap:wrap;margin:16px 0}
.tag-list a{padding:6px 10px;border-radius:6px;background:#f6f7fb;color:#342f5e;font-size:14px}
.video-box{aspect-ratio:16/9;background:#10233e;overflow:hidden;border-radius:6px}
.video-box iframe{width:100%;height:100%;border:0;display:block}
.site-footer{padding:34px 0;background:#342f5e;color:#dfe9f7}
.site-footer p{color:#dfe9f7}
@media(max-width:900px){
  .hero-inner,.grid-4,.grid-3,.article-grid,.article-nav{grid-template-columns:1fr}
  h1{font-size:29px}
  h2{font-size:23px}
  .lead{font-size:16px}
  .nav{align-items:flex-start;flex-direction:column;padding:12px 0}
  nav{gap:10px;font-size:14px}
  .section{padding:42px 0}
  .article-body{padding:18px;margin:24px auto 44px}
}