
:root{--bg:#fff;--soft:#f5f8fc;--soft2:#edf4fb;--blue:#3f8fe5;--blue2:#245f9e;--deep:#153f66;--title:#16283c;--text:#43566a;--muted:#718296;--line:#dce7f2;--tag:#eaf4ff;--footer:#123958;--max:1200px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft YaHei",sans-serif;line-height:1.7;overflow-x:hidden}a{color:var(--blue2);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;height:auto}.skip-link{position:absolute;left:-9999px}.skip-link:focus{left:16px;top:16px;z-index:9999;background:white;padding:10px}.safety-strip{background:var(--soft2);color:var(--deep);font-size:14px;padding:8px 20px;text-align:center;border-bottom:1px solid var(--line)}.site-header{position:sticky;top:0;z-index:1000;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(10px)}.header-inner{max-width:var(--max);margin:auto;display:flex;align-items:center;gap:28px;padding:12px 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1fr;gap:32px}.network-tabs{display:flex;flex-direction:column;gap:8px}.network-tabs button{min-height:48px;text-align:left;padding:10px 14px;border:1px solid var(--line);background:white;color:var(--title);cursor:pointer}.network-tabs button[aria-selected="true"]{background:var(--soft2);border-color:#a9cef4}.network-panel{display:grid;grid-template-columns:1fr 280px;gap:26px;align-items:center;border-left:2px solid var(--blue);padding-left:28px}.network-panel[hidden]{display:none}.network-panel img{max-height:240px}.steps{position:relative;display:grid;gap:18px;max-width:900px}.step{display:grid;grid-template-columns:110px 1fr;gap:18px;padding:18px 0;border-bottom:1px solid var(--line)}.step:nth-child(even){margin-left:70px}.step-num{font-size:32px;color:var(--blue2);font-weight:700}.split{display:grid;grid-template-columns:1fr 1fr;gap:46px;align-items:start}.process{display:grid;gap:0}.process div{padding:14px 0;border-bottom:1px solid var(--line)}.notice{padding:18px 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@media(max-width:700px){.header-inner{gap:10px;padding:10px 14px}.brand img{width:122px}.header-actions .download-btn{padding:0 12px}.hero{padding:46px 16px 42px;gap:26px}.hero h1{font-size:40px}.hero-art{min-height:300px}.section{padding:54px 16px}.task-strip{grid-template-columns:1fr}.task{border-right:0;border-bottom:1px solid var(--line)}.mosaic,.split,.academy-layout,.network-panel{grid-template-columns:1fr}.network-panel{padding-left:18px}.step,.step:nth-child(even){grid-template-columns:70px 1fr;margin-left:0}.update-row{grid-template-columns:1fr;gap:6px}.footer-grid{grid-template-columns:1fr}.footer-bottom{grid-template-columns:1fr}.article-shell{padding:34px 16px}.page-hero{padding:44px 16px 30px}.page-hero h1{font-size:38px}.safety-strip{text-align:left;padding:9px 14px}.maint-card{padding:30px 22px}.maint-card h1{font-size:32px}}
