:root{--bg:#F5F8FA;--paper:#fff;--blue-light:#EAF3F7;--sand:#F7F1E6;--title:#173044;--body:#294356;--muted:#607789;--accent:#176A91;--gold:#D1A35B;--foot:#123247;--line:#DCE6EC}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);font:16px/1.75 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;color:var(--body);overflow-x:clip}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible{outline:3px solid var(--gold);outline-offset:3px}button{font:inherit;cursor:pointer}img{display:block;max-width:100%;height:auto;object-fit:contain;object-position:center center}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--title);line-height:1.35}h1{font-size:30px}h2{font-size:23px}h3{font-size:18px}p{overflow-wrap:anywhere}.container{width:min(1120px,calc(100% - 48px));margin-inline:auto;min-width:0}.site-header{position:relative;z-index:10}.brand-bar{background:#fff;border-bottom:1px 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0;border-top:1px solid #446070;color:#c7d4dc}.bottom-nav{display:none}[hidden]{display:none!important}@media(max-width:1050px){.topic-grid,.service-links{grid-template-columns:repeat(2,minmax(0,1fr))}.story-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.story-primary{grid-row:span 2}.coast-layout{grid-template-columns:minmax(0,1.5fr) minmax(0,1fr)}}@media(max-width:900px){.top-links{gap:11px}.brand-logo{max-width:92px}.split,.split.reverse,.longread{grid-template-columns:minmax(0,1fr)}.coast-layout{grid-template-columns:1fr}.coast-side{grid-template-columns:1fr 1fr}.footer-main{grid-template-columns:1fr;gap:28px}}@media(max-width:767px){body{font-size:15px;line-height:1.75;padding-bottom:calc(56px + env(safe-area-inset-bottom))}.container{width:calc(100% - 32px)}h1{font-size:25px}h2{font-size:21px}h3{font-size:17px}.brand-inner{height:60px}.brand-logo{max-width:100px;max-height:31px}.brand-words 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20px;margin-bottom:26px}.reading-section{margin-bottom:32px}.faq-item{padding:18px 0}.faq-item h2{font-size:18px}}@media(max-width:359px){.brand-logo{max-width:68px}.brand-words strong{font-size:18px}.brand-words small{letter-spacing:1.5px}.menu-toggle{min-width:60px}.actions .button{width:100%}.footer-groups{gap:15px 9px}.index-links{grid-template-columns:1fr}}

/* 缺少本地授权图片时，图文分栏自动恢复为完整单列。 */
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