:root{--paper:#f5f6f2;--surface:#fff;--ink:#202922;--muted:#6b746d;--line:#dfe4dc;--dark:#17241e;--lime:#c6ed96;--teal:#287861;--amber:#ac7126;--header:82px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:110px}body{margin:0}a{color:inherit;text-decoration:none}button,input{font:inherit}button,a,input{-webkit-tap-highlight-color:transparent}button{cursor:pointer}svg{display:block;width:22px;height:22px;flex-shrink:0}button:focus-visible,a:focus-visible,input:focus-visible,[tabindex]:focus-visible{outline:3px solid #76ac66;outline-offset:4px;border-radius:3px}[hidden]{display:none!important}::selection{background:#d0eabf}p{margin:0}strong{font-weight:650}.skip-link{position:fixed;left:16px;top:-70px;z-index:100;background:var(--dark);color:white;padding:14px 20px}.skip-link:focus{top:10px}
.site-header{height:var(--header);position:sticky;top:0;z-index:30;background:rgba(245,246,242,.97);border-bottom:1px solid var(--line);backdrop-filter:blur(12px)}.header-inner{max-width:1300px;margin:auto;height:100%;padding:0 40px;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;gap:13px}.brand-mark{width:42px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--ink);color:var(--paper);font-size:27px;font-weight:750;position:relative;line-height:1;padding-bottom:7px}.brand-mark>span{position:absolute;font-size:8px;bottom:6px;letter-spacing:1px}.brand-name{font-size:13px;letter-spacing:2.2px;font-weight:750}.brand-name small{display:block;color:var(--muted);font-size:8px;font-weight:500;letter-spacing:1.9px;margin-top:7px}.header-actions{display:flex;align-items:center;gap:24px}.version-tag{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;display:flex;align-items:center;gap:8px;color:#556450}.version-tag i{width:6px;height:6px;background:#5b9152;border-radius:50%}.download-button{display:flex;align-items:center;gap:9px;padding:12px 17px;background:var(--ink);color:#fff;font-size:12px;line-height:20px;border-radius:4px}.download-button svg{width:16px;height:16px}.download-button:hover{background:#38533e}
.hero{background:var(--dark);color:#f2f5ec;position:relative;overflow:hidden}.hero::after{content:"";position:absolute;inset:0;pointer-events:none;background:radial-gradient(ellipse at 79% 30%,rgba(117,162,110,.09),transparent 58%)}.hero-inner{position:relative;z-index:1;max-width:1300px;margin:auto;padding:65px 40px 60px;display:grid;grid-template-columns:1.3fr 1fr;gap:76px;align-items:center}.hero-label{font-size:10px;letter-spacing:1.8px;color:#b5c5b8;display:flex;align-items:center;gap:9px;margin-bottom:25px}.hero-label>span{display:block;width:6px;height:6px;background:var(--lime)}h1{font-size:clamp(37px,4.3vw,57px);font-weight:670;line-height:1.27;letter-spacing:-2px;margin:0 0 23px}h1>span{color:var(--lime)}.hero-description{font-size:15px;line-height:1.9;color:#b7c4b9;max-width:490px}.hero-actions{display:flex;align-items:center;gap:27px;margin-top:30px}.primary-link{display:flex;align-items:center;gap:18px;background:var(--lime);color:#1b3020;padding:14px 19px;border-radius:3px;font-size:13px;font-weight:650}.primary-link:hover{background:#daefbf}.primary-link svg{width:18px;height:18px}.text-link{display:flex;align-items:center;gap:8px;font-size:12px;color:#d7dfd2;border-bottom:1px solid #627161;padding-bottom:5px}.text-link svg{width:14px;height:14px}.hero-meta{display:flex;gap:19px;flex-wrap:wrap;font-size:10px;color:#91a192;margin-top:35px}.hero-meta>span+span{border-left:1px solid #3e5042;padding-left:19px}.hero-meta strong{color:#bdcdbd;font-size:10px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;margin-left:5px}
.topology-figure{border:1px solid #465747;border-radius:7px;background-color:#1d2c23;background-image:radial-gradient(#3b4b3e .7px,transparent .7px);background-size:12px 12px;padding:22px 25px 18px;position:relative;box-shadow:0 12px 30px #0a16071c}.figure-topline{display:flex;align-items:center;justify-content:space-between;font-size:11px;margin-bottom:21px;color:#c8d4c8}.figure-topline>span:last-child{font-size:8px;letter-spacing:1.5px;color:#93a795}.machine{position:relative;display:flex;align-items:center;gap:16px;border:1px solid #536754;background:#213729;padding:14px 17px;border-radius:4px}.machine-icon{width:42px;height:42px;background:#c6ed9615;border:1px solid #b5d59636;border-radius:4px;display:flex;align-items:center;justify-content:center;color:#d2eba8;flex-shrink:0}.machine-icon svg{width:29px;height:29px}.machine>div:nth-child(2)>span{font-size:8px;letter-spacing:1.35px;color:#a4bba4;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.machine strong{display:block;font-size:14px;margin-top:3px;color:#f3f6eb}.machine p{font-size:9px;margin-top:5px;color:#9daf9e;letter-spacing:.2px}.machine>i{display:block;width:5px;height:5px;border-radius:50%;background:#afdc7e;margin-left:auto;box-shadow:0 0 8px #98d06366}.mac-machine{border-color:#5c8571;background:#243d30}.mac-machine .machine-icon{color:#a9d4bf;background:#5d947c17;border-color:#7caf9336}.device-machine{background:#29362d;border-color:#59645a}.device-machine .machine-icon{color:#cdd3be;background:#899c7715;border-color:#9fad8d30}.connection{height:34px;display:flex;align-items:center;padding-left:38px;gap:21px}.connection>span{position:relative;height:100%;border-left:1px dashed #8dad7c}.connection>span:after{content:"";position:absolute;bottom:0;left:-3px;width:5px;height:5px;transform:rotate(45deg);border-right:1px solid #a9c995;border-bottom:1px solid #a9c995}.connection em{font-style:normal;font-size:9px;color:#9fb59d;letter-spacing:.4px}.figure-caption{font-size:9px;display:flex;align-items:center;gap:7px;color:#8fa78f;margin-top:15px}.figure-dot{width:4px;height:4px;display:block;border-radius:50%;background:#8da780}
.quick-answers{max-width:1220px;margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);border-bottom:1px solid var(--line);padding:28px 0}.quick-answers>a{display:flex;align-items:center;gap:16px;padding:8px 28px;border-right:1px solid var(--line)}.quick-answers>a:first-child{padding-left:0}.quick-answers>a:last-child{border:0;padding-right:0}.answer-number{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:12px;color:#788873;padding-top:2px;align-self:flex-start}.quick-answers strong{font-size:13px}.quick-answers p{font-size:11px;margin-top:8px;color:var(--muted);line-height:1.6}.quick-answers svg{width:17px;height:17px;color:#84917f;margin-left:auto}.quick-answers>a:hover strong{color:var(--teal)}
.reading-layout{max-width:1300px;margin:0 auto;padding:44px 40px 72px;display:grid;grid-template-columns:220px minmax(0,1fr);gap:62px}.sidebar-inner{position:sticky;top:115px}.nav-label{font-size:11px;font-weight:650;display:flex;align-items:center;justify-content:space-between;margin:5px 14px 19px 0}.nav-label>span{font-size:8px;letter-spacing:1.7px;color:#849080;font-weight:400}.sidebar nav{display:flex;flex-direction:column;gap:4px}.sidebar nav>a{display:flex;align-items:center;gap:14px;font-size:12px;color:#626c61;padding:12px 10px;border-left:2px solid transparent;line-height:18px;transition:background .15s}.sidebar nav>a>span{font-size:10px;color:#8a9584;font-family:ui-monospace,SFMono-Regular,Consolas,monospace}.sidebar nav>a:hover{background:#eaf0e3;color:var(--teal)}.sidebar nav>a[aria-current]{border-left-color:var(--teal);background:#e8eee1;color:#265e45;font-weight:600}.sidebar nav>a[aria-current]>span{color:#567b4b}.sidebar-note{margin-top:30px;border-top:1px solid var(--line);padding:23px 12px 0 0}.sidebar-note>span{font-size:10px;font-weight:650;color:#66755e}.sidebar-note p{font-size:11px;line-height:1.85;color:#7a8276;margin-top:10px}.sidebar-note>a{display:flex;align-items:center;gap:8px;font-size:10px;color:var(--teal);margin-top:12px}.sidebar-note svg{width:13px;height:13px}.sidebar-download{margin-top:27px;display:flex;align-items:center;gap:9px;font-size:11px;color:#65765d}.sidebar-download svg{width:15px;height:15px}.article{min-width:0}.reading-note{display:flex;gap:13px;border:1px solid #dce5d4;background:#edf2e7;border-radius:4px;padding:16px 19px;margin-bottom:43px;align-items:flex-start}.note-icon{border:1px solid #8da381;border-radius:50%;color:#607851;font-size:10px;width:15px;height:15px;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:3px;font-family:Georgia,serif}.reading-note p{font-size:12px;line-height:1.85;color:#62715c}.article-section{scroll-margin-top:115px;margin-bottom:48px;padding-bottom:40px;border-bottom:1px solid var(--line)}.article-section:last-child{margin-bottom:0;border:0;padding-bottom:0}.section-heading{display:flex;align-items:center;gap:15px;margin-bottom:23px}.section-number{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:11px;color:#768870;background:#e8eddf;border:1px solid #dfe6d5;width:29px;height:29px;display:flex;align-items:center;justify-content:center;border-radius:3px;flex-shrink:0}h2{font-size:23px;line-height:1.4;letter-spacing:-.4px;font-weight:650;margin:0}.prose{font-size:13px;line-height:1.98;color:#535e52}.prose>p{margin:0 0 17px}.prose strong{color:#2b392b;font-weight:650}.prose h3{font-size:16px;margin:27px 0 13px;color:#2c3b2c;font-weight:650;line-height:1.7}.prose h3:first-child{margin-top:0}.prose ul,.prose ol{padding-left:23px;margin:13px 0 20px}.prose li{padding-left:4px;margin:8px 0}.prose code{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:.88em;background:#eaf0e4;border:1px solid #dce4d4;border-radius:3px;color:#405b35;padding:2px 4px;overflow-wrap:anywhere}.prose a:not(.source-ref){color:#287861;text-decoration:underline;text-decoration-color:#b4ccb9;text-underline-offset:3px;overflow-wrap:anywhere}.prose a:hover{color:#165939}.source-ref{display:inline-block;color:#699059;font-size:9px;vertical-align:super;line-height:1.4;margin-left:3px;padding:0 1px}.source-ref:hover{background:#dfecd2}.source-id{scroll-margin-top:140px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:11px!important;color:#708363!important;white-space:nowrap}.table-wrap{max-width:100%;overflow-x:auto;margin:22px 0 23px;border:1px solid #dce3d7;border-radius:4px;background:#fafbf7}table{border-collapse:collapse;width:100%;font-size:11px;line-height:1.85;color:#62705d;text-align:left}th{background:#eaf0e2;color:#495d42;font-size:10px;letter-spacing:.15px;font-weight:650;padding:13px 15px;vertical-align:top;border-bottom:1px solid #d9e2d2}td{padding:13px 15px;vertical-align:top;border-bottom:1px solid #e4e9de}tr:last-child td{border-bottom:0}td:first-child{color:#42553e;font-weight:550}tbody tr:nth-child(even){background:#f3f6ed}td code{background:#edf1e7;font-size:10px;border:0}td strong{color:#435c35!important}.prose>p:last-child{margin-bottom:0}
.interactive-card{border:1px solid #d5dfcc;border-radius:5px;background:#fff;margin:24px 0;padding:22px}.widget-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:19px}.eyebrow{font-size:11px;color:#536f45;font-weight:650;letter-spacing:.5px}.subtle{color:#8a9582;font-size:10px}.os-tabs{display:flex;border-bottom:1px solid #dae3d0;gap:0}.os-tabs button{background:transparent;border:0;border-bottom:2px solid transparent;padding:10px 18px 11px;font-size:12px;color:#788271;margin-bottom:-1px}.os-tabs button:first-child{padding-left:8px}.os-tabs button>span{font-size:9px;margin-left:5px;color:#95a48a}.os-tabs button[aria-selected=true]{border-bottom-color:var(--teal);color:#276644;font-weight:650}.os-panel{padding-top:19px}.panel-summary{display:flex;gap:8px;align-items:center;font-size:12px;color:#2d4631}.status-dot{display:block;flex-shrink:0;width:6px;height:6px;background:#80a95b;border-radius:50%}.status-dot.teal{background:#379579}.status-dot.amber{background:#b38b47}.os-panel p{font-size:11px;color:#819077;line-height:1.95;margin-top:15px}.mini-flow{display:flex;align-items:center;gap:7px;margin-top:15px;flex-wrap:wrap}.mini-flow>span{font-size:10px;background:#eff4e9;border:1px solid #e0e8d5;color:#61734f;padding:4px 8px;border-radius:3px}.mini-flow svg{width:13px;height:13px;color:#97a78a}.route-options{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.route-options>button{border:1px solid #dfe5d9;background:#fafcf7;text-align:left;padding:14px 14px 13px;min-width:0;border-radius:3px;transition:background .15s}.route-options>button>span{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;color:#92a186;font-size:9px;display:block;margin-bottom:9px}.route-options>button>strong{font-size:12px;color:#526948;display:block;line-height:1.6}.route-options>button>small{display:block;font-size:9px;color:#8a9980;margin-top:4px}.route-options>button[aria-pressed=true]{border-color:#608658;background:#edf5e3}.route-options>button[aria-pressed=true]>strong{color:#385d2e}.route-result{margin-top:17px;background:#f0f5e9;padding:16px 17px;border-left:2px solid #77a363;border-radius:0 3px 3px 0}.route-result-label{display:block;font-size:9px;color:#87a075;margin-bottom:5px}.route-result>strong{font-size:12px;color:#4b673e}.route-result>p{font-size:11px;color:#75886a;margin-top:7px;line-height:1.95}.check-progress{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:15px;background:#eaf1e2;padding:13px 15px;border:1px solid #dce5d3;border-radius:3px;margin:12px 0 18px}.check-progress>span{font-size:10px;color:#5c794c}.check-progress progress{width:100%;height:5px;border:0;border-radius:4px;accent-color:#679855;background:#dae5d2;overflow:hidden}.check-progress progress::-webkit-progress-bar{background:#dae5d2}.check-progress progress::-webkit-progress-value{background:#679855}.check-progress progress::-moz-progress-bar{background:#679855}.check-progress>button{background:none;border:0;font-size:9px;color:#7c9270;text-decoration:underline;text-underline-offset:3px;padding:5px}.check-item{list-style:none;padding:0!important;margin:0!important;border-bottom:1px solid #e3e9dc}.prose ul:has(.check-item){padding:0;margin-bottom:24px}.check-item label{display:flex;align-items:flex-start;gap:12px;padding:11px 8px;cursor:pointer;font-size:12px}.check-item input{appearance:auto;margin:5px 0 0;width:16px;height:16px;accent-color:#679855;flex-shrink:0;cursor:pointer}.check-item:has(input:checked) label{color:#8b9c82}.check-item:has(input:checked) label>span{text-decoration:line-through;text-decoration-color:#b8c9ac}
.site-footer{border-top:1px solid var(--line);background:#eef1e8;padding:38px max(40px,calc((100vw - 1220px)/2));display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-mark{font-family:ui-monospace,SFMono-Regular,Consolas,monospace;font-size:11px;color:#789368;letter-spacing:1px}.site-footer p{font-size:14px;color:#4a6040;margin:11px 0 8px}.site-footer div>span:last-child{font-size:10px;color:#92a085}.site-footer>a{display:flex;align-items:center;gap:18px;font-size:12px;color:#5c7950}.site-footer>a svg{width:16px;height:16px}
@media(min-width:1440px){.hero-inner{padding-top:74px;padding-bottom:70px}.hero h1{font-size:58px}.hero-description{font-size:16px}.reading-layout{gap:75px;grid-template-columns:225px minmax(0,1fr)}}
@media(max-width:1250px){.quick-answers{margin:0 40px}.hero-inner{gap:45px}.reading-layout{gap:40px;grid-template-columns:205px minmax(0,1fr)}.hero-actions{gap:18px;flex-wrap:wrap}.text-link{font-size:11px}.topology-figure{padding-left:19px;padding-right:19px}}
@media(max-width:1000px){.hero-inner{grid-template-columns:1.2fr 1fr;gap:26px;padding-top:48px;padding-bottom:45px}.hero h1{font-size:40px;letter-spacing:-1.4px}.hero-description{font-size:13px}.hero-label{font-size:8px}.hero-meta{gap:12px;font-size:9px}.hero-meta>span+span{padding-left:12px}.machine{padding:12px 11px;gap:11px}.machine-icon{width:35px;height:35px}.machine strong{font-size:12px}.machine p{font-size:8px}.machine>div:nth-child(2)>span{font-size:7px}.figure-topline>span:last-child{font-size:7px}.quick-answers>a{padding-left:18px;padding-right:18px;gap:10px}.quick-answers strong{font-size:11px}.quick-answers p{font-size:10px}.reading-layout{grid-template-columns:185px minmax(0,1fr);gap:26px}.sidebar nav>a{font-size:11px;gap:10px;padding-left:7px}.table-wrap table{min-width:470px}.prose{font-size:12px}h2{font-size:21px}.interactive-card{padding:18px}.route-options{gap:7px}.route-options>button{padding:12px 9px}.route-options>button>strong{font-size:10px}.route-options>button>small{font-size:8px}}
@media(max-width:899px){:root{--header:72px}.header-inner{padding:0 24px}.hero-inner{padding:40px 24px;grid-template-columns:1.2fr 1fr}.quick-answers{margin:0 24px}.reading-layout{display:flex;flex-direction:column;padding:0 24px 50px;gap:27px}.sidebar{position:sticky;top:72px;z-index:20;background:var(--paper);margin:0 -24px;padding:0 24px;border-bottom:1px solid var(--line)}.sidebar-inner{position:static}.nav-label,.sidebar-note,.sidebar-download{display:none}.sidebar nav{flex-direction:row;overflow-x:auto;gap:8px;scrollbar-width:thin;padding:12px 0;white-space:nowrap}.sidebar nav>a{border:1px solid var(--line);border-radius:3px;padding:7px 10px;font-size:10px;gap:7px;background:#fafbf7;flex-shrink:0}.sidebar nav>a[aria-current]{border:1px solid #9db28e}.sidebar nav>a>span{font-size:8px}.reading-note{margin:0 0 32px}.article-section{scroll-margin-top:154px}.source-id{scroll-margin-top:164px}.table-wrap table{min-width:0}.prose{font-size:13px}.route-options>button>strong{font-size:12px}.route-options>button>small{font-size:9px}.site-footer{padding:30px 24px}}
@media(max-width:700px){.hero-inner{grid-template-columns:1fr;gap:34px;padding-top:42px;padding-bottom:38px}.hero h1{font-size:45px}.hero-label{font-size:9px;margin-bottom:20px}.hero-description{font-size:14px;max-width:470px}.hero-actions{margin-top:25px;gap:23px}.hero-meta{margin-top:26px;font-size:9px}.topology-figure{max-width:550px;padding:19px 22px;width:100%}.figure-topline{margin-bottom:16px}.figure-topline>span:last-child{font-size:8px}.machine{padding:12px 15px}.machine-icon{width:38px;height:38px}.machine>div:nth-child(2)>span{font-size:8px}.machine strong{font-size:13px}.machine p{font-size:9px}.connection{height:28px}.quick-answers{grid-template-columns:1fr;padding:15px 0}.quick-answers>a,.quick-answers>a:first-child,.quick-answers>a:last-child{padding:14px 0;border:0;border-bottom:1px solid var(--line);gap:16px}.quick-answers>a:last-child{border:0}.quick-answers p{font-size:11px;margin-top:5px}.quick-answers strong{font-size:12px}.answer-number{font-size:11px}.quick-answers svg{width:18px;height:18px}.reading-layout{gap:24px}.table-wrap table{min-width:470px}.section-heading{gap:12px;margin-bottom:20px}h2{font-size:20px;letter-spacing:-.3px}.section-number{width:27px;height:27px;font-size:10px}.article-section{margin-bottom:35px;padding-bottom:30px}.reading-note{padding:14px 15px}.reading-note p{font-size:11px}.prose{font-size:12px;line-height:2.05}.prose h3{font-size:15px}.interactive-card{padding:17px 16px}.widget-heading{gap:5px}.subtle{font-size:8px}.eyebrow{font-size:10px}.os-tabs button{font-size:11px;padding-left:12px;padding-right:12px}.os-tabs button>span{font-size:8px}.panel-summary{font-size:11px;align-items:flex-start}.panel-summary>.status-dot{margin-top:9px}.route-options{gap:6px}.route-options>button{padding:11px 8px}.route-options>button>strong{font-size:10px}.route-options>button>small{font-size:8px;line-height:1.65}.check-progress{grid-template-columns:1fr auto;gap:8px;padding:11px 12px}.check-progress progress{grid-row:2;grid-column:1/-1}.check-progress>button{grid-column:2;grid-row:1}.site-footer{align-items:flex-start;flex-direction:column;gap:25px}.site-footer>a{font-size:11px}}
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