:root{--bg:#F6F8F8;--paper:#fff;--shade:#EAF0F2;--navy:#122E3B;--panel:#1A4050;--accent:#168E96;--link:#226D9D;--head:#193946;--body:#374D58;--sub:#647981;--line:#D9E3E6;--footer:#0C2632}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--bg);color:var(--body);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif;overflow-wrap:break-word}a{color:var(--link);text-underline-offset:3px}a:hover{color:var(--accent)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #18aab2;outline-offset:3px}img{max-width:100%}h1,h2,h3{color:var(--head);line-height:1.3;margin:0 0 .75em}h1{font-size:clamp(28px,3vw,40px)}h2{font-size:clamp(22px,2.1vw,28px)}h3{font-size:19px}p{margin:0 0 1.15em}ul,ol{padding-left:1.55em}li{margin:.35em 0}.container,.site-main,.breadcrumbs{width:min(1220px,calc(100% - 56px));margin-inline:auto}.site-main{padding-bottom:80px}.site-header{background:var(--navy);color:white;position:relative;z-index:9}.header-inner{width:min(1220px,calc(100% - 56px));margin:auto;min-height:76px;display:flex;align-items:center;gap:18px}.brand{display:flex;align-items:center;gap:8px;flex:0 0 auto;text-decoration:none;color:#fff}.brand:hover{color:#fff}.brand-label{font-size:10px;letter-spacing:.08em;white-space:nowrap}.brand-picture,.footer-logo{margin:0;padding:0;background:none;display:flex;align-items:center}.brand-picture img{display:block;width:auto;height:auto;max-height:38px;max-width:120px;object-fit:contain}.brand .image-missing{font-size:13px;max-width:115px;color:#e2eeee}.desktop-nav{display:flex;align-items:center;justify-content:center;gap:clamp(5px,1.05vw,17px);flex:1;min-width:0}.desktop-nav a{font-size:clamp(12px,.94vw,14px);color:#e3edf0;white-space:nowrap;text-decoration:none;border-bottom:2px solid transparent;padding:10px 0}.desktop-nav 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@media(max-width:1120px){.header-inner{gap:10px}.brand-label{display:none}.desktop-nav{gap:8px}}
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@media(max-width:640px){body{font-size:15px;line-height:1.8}.container,.site-main,.breadcrumbs{width:calc(100% - 32px)}.header-inner{width:calc(100% - 32px)}.brand-picture img{max-width:100px}.entry-link{font-size:12px;padding:7px 10px}.page-intro{padding:28px 0 10px}.lead{font-size:16px}.hero{padding-top:28px}.topic-group{grid-template-columns:1fr;gap:10px}.topic-item{grid-template-columns:38px 1fr}.surface,.soft,.dark-panel{padding:18px}.image-holder--hero{--image-limit:195px}.image-holder--feature{--image-limit:180px}.image-holder--inline{--image-limit:140px}.image-holder--portrait{--image-limit:275px;max-width:240px}.image-holder--banner{--image-limit:125px}.footer-links{grid-template-columns:1fr 1fr}.site-main{padding-bottom:52px}h1{font-size:28px}h2{font-size:22px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation-duration:.01ms!important;transition-duration:.01ms!important}}