:root{--paper:#f4f7fa;--white:#fff;--mist:#eaf1f6;--aqua:#e9f8f8;--navy:#102e46;--deep:#163c57;--teal:#13b8c5;--blue:#237bd3;--ink:#18364b;--body:#344c60;--muted:#64798a;--line:#dce6ed;--footer:#0b2539}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:30px}body{margin:0;background:var(--paper);color:var(--body);font:16px/1.8 Arial,'PingFang SC','Microsoft YaHei',sans-serif}body.drawer-open{overflow:hidden}a{color:#146aa8;text-underline-offset:3px}a:hover{color:#0a9cab}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--teal);outline-offset:3px}img{max-width:100%}button{font:inherit;cursor:pointer}.shell{width:min(1200px,calc(100% - 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#b5cbd7;color:#8297a7;font-size:13px;text-align:center}.media-frame--hero.media-placeholder{min-height:220px}.media-frame--logo.media-placeholder{min-height:36px;width:110px;font-size:9px}.media-frame--mobile.media-placeholder{min-height:230px}.topic-list{display:grid;grid-template-columns:1fr 1fr;column-gap:60px}.topic-item{padding:19px 0;border-bottom:1px solid var(--line)}.topic-item span{color:#219aaa;font-weight:700;font-size:12px}.topic-item h3{margin:3px 0}.topic-item a{text-decoration:none}.topic-item p{margin:0;color:var(--muted);font-size:15px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:34px;align-items:center}.split>*{min-width:0}.split--wide{grid-template-columns:minmax(0,1.5fr) minmax(0,.78fr)}.feature-lead{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px}.feature-lead article{padding:25px;background:var(--mist);border-left:4px solid var(--teal)}.feature-aside{display:grid;gap:18px}.feature-aside 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@media(max-width:380px){.entry-link{padding:0 7px}.brand{max-width:43%}.brand .media-frame{max-width:120px}.steps{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important}}