
:root{color-scheme:dark;--bg:#080A0D;--panel:#12161C;--raised:#171C23;--text:#F5F7FA;--body:#C7CDD5;--muted:#9098A3;--blue:#6EA8FF;--border:rgba(255,255,255,.09)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--body);font-family:Arial,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px;line-height:1.8;overflow-wrap:break-word}a{color:inherit;text-decoration:none}a:hover{color:var(--blue)}a:focus-visible,button:focus-visible,summary:focus-visible{outline:2px solid #8ED8FF;outline-offset:3px}button{font:inherit;cursor:pointer}h1,h2,h3,h4{color:var(--text);line-height:1.38;margin:0 0 18px;font-weight:700}h1{font-size:34px;letter-spacing:-.03em}h2{font-size:26px}h3{font-size:19px}p{margin:0 0 17px}p:last-child{margin-bottom:0}.shell{max-width:1200px;margin-inline:auto;padding-inline:24px;min-width:0}.site-header{background:rgba(8,10,13,.96);border-bottom:1px solid 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@media(max-width:1100px){.header-inner{gap:14px}.brand{flex-basis:192px}.desktop-nav{gap:12px}.desktop-nav a{font-size:13px}}
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@media(max-width:767px){.article-layout,.split-essays,.feature-split,.mini-columns{grid-template-columns:1fr}.article-aside{position:static;padding:19px 0;border-left:0;border-top:1px solid var(--border)}.hero{grid-template-columns:1fr;gap:23px;padding-top:32px}.hero .hero-visual{order:-1}.hero .media-frame{height:240px}.hero h1{font-size:31px}.page-heading{padding:30px 0 22px}.page-heading h1{font-size:28px}.home-section{margin-top:34px}.knowledge-grid{gap:12px}.visual-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.home-visual{grid-template-columns:repeat(2,minmax(0,1fr))}.mini-columns .sidebar-block{border-left:0;border-top:1px solid var(--border);padding:18px 0 0}.footer-grid{grid-template-columns:1fr 1fr;gap:26px}.footer-grid nav:last-child{grid-column:auto}.footer-links,.site-footer nav:last-child .footer-links{grid-template-columns:1fr 1fr}.footer-about{grid-column:1/-1}.photo-trio{grid-template-columns:repeat(2,minmax(0,1fr))}.photo-trio figure:last-child{grid-column:span 2;max-width:70%;margin:auto}.feature-split .media-frame{max-height:210px}.feature-split img{max-height:185px}}
@media(max-width:480px){.shell{padding-inline:16px}.header-inner{height:62px}.brand{max-width:calc(100% - 166px)}.brand-logo{max-width:86px}.enter-button{height:38px;min-width:78px;padding:0 10px}.shortcut-inner{height:43px}.shortcut-scroll{gap:24px}.hero h1{font-size:29px}.hero .media-frame{height:195px}.hero .media-frame img{max-height:175px}.hero .media-frame .image-placeholder{min-height:170px}.page-heading h1{font-size:26px}h2{font-size:21px}h3{font-size:17px}body{font-size:15px}.lead{font-size:15px}.knowledge-grid,.visual-grid.two{grid-template-columns:1fr}.knowledge-card{padding:17px}.visual-grid{gap:11px}.visual-grid figure{padding:8px}.visual-grid h3{font-size:15px}.visual-grid p{font-size:13px}.visual-grid .media-frame{min-height:115px}.visual-grid .media-frame img{max-height:135px}.visual-grid.two figure:nth-child(3n){grid-column:span 1}.home-visual .media-frame{height:130px}.home-visual .media-frame img{max-height:110px}.photo-trio{grid-template-columns:1fr}.photo-trio figure:last-child{grid-column:auto;max-width:none}.footer-grid{grid-template-columns:1fr}.footer-grid nav:last-child{grid-column:auto}.footer-links{grid-template-columns:1fr 1fr}.footer-about{grid-column:auto}.compact-table{font-size:13px}.compact-table th,.compact-table td{padding:9px}.device-photo{max-width:220px}}
@media(max-width:350px){.brand-logo{max-width:74px}.enter-button{min-width:74px;font-size:11px}.menu-toggle{width:36px;flex-basis:36px}.hero h1{font-size:27px}.visual-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}
/* Keep missing administrator-supplied logos from expanding the navigation. */
.brand .image-placeholder{min-height:0;height:36px;width:102px;max-width:102px;border-radius:5px;font-size:8px;padding:0;overflow:hidden}.brand .image-placeholder span{padding:2px}.drawer-top .image-placeholder{min-height:0;height:27px;width:80px;border-radius:5px;font-size:8px}.drawer-top .image-placeholder span{padding:2px}.footer-about .image-placeholder{min-height:0;height:34px;width:85px;display:inline-flex;vertical-align:middle;margin-right:12px;font-size:8px}.footer-about .image-placeholder span{padding:2px}@media(max-width:979px){.brand .image-placeholder{height:28px;width:95px}}@media(max-width:480px){.brand .image-placeholder{height:28px;width:78px}}
