:root{--base:#F6FAFC;--surface:#fff;--soft:#EAF6FA;--soft2:#EDF4F8;--cyan:#25C8D1;--sky:#25B6E8;--blue:#1787DB;--navy:#174B78;--heading:#183A56;--text:#31485D;--muted:#687D8E;--line:#DCE9F0;--footer:#123653;--radius:18px}
*,*::before,*::after{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;background:var(--base);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--text);font-size:16px;line-height:1.8}body.drawer-open{overflow:hidden}a{color:var(--navy);text-decoration-thickness:1px;text-underline-offset:4px}a:hover{color:#087BBA}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--cyan);outline-offset:4px}img{max-width:100%;height:auto}h1,h2,h3,p,figure{margin-top:0}h1,h2,h3{color:var(--heading);line-height:1.38}h1{font-size:clamp(32px,3.5vw,42px);letter-spacing:-.035em}h2{font-size:clamp(23px,2.3vw,27px)}h3{font-size:20px}p{margin-bottom:1.15em}.container{width:min(calc(100% - 56px),1180px);margin-inline:auto}.narrow{max-width:780px}.skip-link{position:absolute;z-index:100;top:-90px;left:12px;background:#fff;padding:12px}.skip-link:focus{top:12px}.site-header{position:relative;z-index:30;background:#fff;border-bottom:1px solid var(--line)}.topbar{height:72px;display:flex;align-items:center;gap:24px}.brand{display:inline-flex;align-items:center;text-decoration:none;flex:0 1 230px;min-width:0}.site-logo{display:block;max-height:38px;max-width:220px;width:auto;height:auto;object-fit:contain}.logo-fallback{font-weight:800;color:var(--navy);font-size:24px;line-height:1.1}.logo-fallback small{display:block;font-size:10px;letter-spacing:.16em}.brand-descriptor{margin:auto;color:var(--muted);font-size:14px;letter-spacing:.08em}.brand-descriptor i{color:var(--cyan);font-style:normal}.entry-button{margin-left:auto;display:inline-flex;align-items:center;justify-content:center;gap:13px;min-height:42px;padding:9px 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0}.quick-inner{display:flex;gap:24px;justify-content:space-between}.quick-inner>div{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px}.quick-inner strong{color:var(--heading)}.quick-inner a{text-decoration:none;color:var(--navy);border-bottom:1px dotted #92AEB9}.topic-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.topic-card{display:block;background:white;border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-decoration:none;min-height:168px;transition:transform .2s,border-color .2s}.topic-card:hover{transform:translateY(-3px);border-color:#68BACB}.topic-card strong{display:block;font-size:18px;color:var(--heading);margin-bottom:8px}.topic-card span{display:block;color:var(--muted);font-size:14px;line-height:1.65}.topic-card::after{content:'阅读专题 ↗';display:block;color:#097FA6;font-weight:700;font-size:12px;margin-top:12px}.editorial-grid{display:grid;grid-template-columns:2fr 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@media(max-height:520px) and (max-width:760px){.mobile-bottom-nav{position:static;height:auto;padding:8px 0}.site-footer{padding-bottom:24px}.back-to-top{bottom:20px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
