@font-face{font-family:Archivo;src:url('fonts/Archivo-640-700-latin.woff2') format('woff2');font-weight:640 700;font-display:swap}
@font-face{font-family:Plex;src:url('fonts/IBMPlexSans-Regular.woff2') format('woff2');font-display:swap}
@font-face{font-family:Mono;src:url('fonts/IBMPlexMono-Medium.woff2') format('woff2');font-display:swap}
:root{color-scheme:dark;--bg:#0d0e10;--panel:#16171b;--well:#1d2026;--line:#30343d;--text:#f1f2f5;--muted:#b0b5c0;--quiet:#969eac;--gold:#e4b456;--blue:#8bbaff;--mint:#78d6bd;--red:#ed6662;font-family:Plex,system-ui,sans-serif;color:var(--text);background:var(--bg);font-size:17px;line-height:1.65}
*{box-sizing:border-box}body{margin:0}a{color:var(--blue);text-underline-offset:.22em}a:hover{color:#c8dcff}a:focus-visible,summary:focus-visible,input:focus-visible+label{outline:3px solid var(--gold);outline-offset:5px}button,input{font:inherit}.skip{position:absolute;left:16px;top:-80px;padding:8px 16px;background:white;color:#111;z-index:20}.skip:focus{top:10px}.wrap{max-width:1240px;margin:auto;padding:0 40px}.site-head{border-bottom:1px solid var(--line);background:var(--bg)}.head-inner{display:flex;align-items:center;justify-content:space-between;gap:30px;min-height:90px}.brand{display:flex;align-items:center;gap:12px;color:var(--text);font:700 22px Archivo,system-ui;text-decoration:none;white-space:nowrap}.mark{width:37px;height:37px;display:block}.site-nav{display:flex;flex-wrap:wrap;gap:10px 26px;font-size:15px}.site-nav a{color:var(--muted);text-decoration:none}.site-nav a[aria-current=page]{color:var(--text);border-bottom:2px solid var(--gold)}.site-nav .account{color:var(--text)}.hero{padding:70px 0 55px;max-width:920px}.eyebrow{font:500 12px Mono,monospace;letter-spacing:.14em;text-transform:uppercase;color:var(--gold);margin:0 0 17px}h1,h2,h3{font-family:Archivo,system-ui,sans-serif;font-weight:640;line-height:1.16;letter-spacing:-.025em}h1{font-size:clamp(38px,5.3vw,65px);max-width:870px;margin:0 0 22px}h2{font-size:28px;margin:0 0 20px}h3{font-size:20px;margin:0 0 12px}p{margin:0 0 18px}.lead{font-size:21px;color:var(--muted);line-height:1.55;max-width:760px}.meta{font:12px Mono,monospace;color:var(--quiet);display:flex;flex-wrap:wrap;gap:10px 24px}.doc-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:64px;align-items:start;padding-bottom:70px}.contents{position:sticky;top:26px;padding-right:20px}.contents p{font:12px Mono,monospace;color:var(--quiet);text-transform:uppercase;letter-spacing:.12em}.contents a{display:block;color:var(--muted);font-size:14px;text-decoration:none;padding:8px 0;line-height:1.5}.contents a:hover{color:white}.contents a:first-letter{color:var(--gold)}.document{min-width:0;max-width:820px}.document section{scroll-margin-top:28px;margin-bottom:44px;padding-bottom:30px;border-bottom:1px solid var(--line)}.document section:last-child{border-bottom:0}.document p{color:#d3d7df}.document ul,.document ol{padding-left:24px}.document li{padding-left:4px;margin:8px 0}.document .references{margin-top:24px;font-size:13px;color:var(--quiet)}.references a{display:inline-block;margin:0 12px 6px 0}.callout{border-left:3px solid var(--gold);background:#211e17;padding:22px 26px;margin:0 0 32px}.callout p:last-child{margin-bottom:0}.callout .label{font:12px Mono,monospace;text-transform:uppercase;letter-spacing:.1em;color:var(--gold)}.callout.info{border-color:var(--mint);background:#13231f}.callout.review{border-color:var(--red);background:#2b191c}.callout.review .label{color:#ff9f9b}.button-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;color:var(--text);background:var(--well);border:1px solid #515a69;padding:11px 18px;border-radius:5px;font-size:15px}.button-link:hover{background:#2c3340}.related{display:flex;gap:12px;flex-wrap:wrap;padding:16px 0 30px}.site-foot{border-top:1px solid var(--line);padding:30px 0 40px;color:var(--quiet);font-size:13px}.foot-inner{display:flex;justify-content:space-between;gap:30px;flex-wrap:wrap}.foot-inner nav{display:flex;gap:20px;flex-wrap:wrap}.foot-inner a{color:var(--muted)}.network-figure{margin:26px 0;padding:24px;background:var(--panel);border:1px solid var(--line);border-radius:8px}.network-figure svg{width:100%;height:auto;display:block}.network-figure text{font-family:Plex,system-ui;fill:var(--text)}.network-figure .sub{fill:var(--muted);font-size:14px}.network-figure rect{fill:var(--well);stroke:#515a69}.network-figure .wifi{stroke:var(--blue);stroke-width:3;stroke-dasharray:4 6}.network-figure .ethernet{stroke:var(--mint);stroke-width:4}.network-figure figcaption{font-size:13px;color:var(--muted);margin-top:14px}.network-steps{display:none}.map{padding:24px;background:#121316;border:1px solid var(--line);border-radius:9px;margin:0 0 48px}.map fieldset{border:0;padding:0;margin:0 0 18px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.map legend{font-family:Archivo;font-size:19px;font-weight:640;margin-bottom:12px}.map input{position:absolute;opacity:0}.map label{padding:7px 14px;border:1px solid #4a505d;border-radius:5px;font-size:14px;cursor:pointer}.map input:checked+label{border-color:var(--gold);color:var(--gold);background:#2b2417}.map-grid{display:grid;grid-template-columns:60px 1fr 2.5fr 1.1fr;gap:12px;min-height:330px}.map-rail{display:flex;flex-direction:column;gap:12px}.map-cell{display:block;border:1px solid var(--line);background:var(--panel);border-radius:5px;padding:15px;color:var(--text);text-decoration:none}.map-cell:hover{border-color:var(--gold);color:white}.map-cell small{display:block;color:var(--muted);font-size:13px}.map-cell strong{display:block;font-size:16px;line-height:1.4}.map-num{width:22px;flex:0 0 22px;align-self:flex-start;display:inline-flex;align-items:center;justify-content:center;background:var(--gold);color:#21170b;border-radius:50%;font:500 12px Mono;min-width:22px;height:22px;margin-bottom:10px}.map-rail .map-cell{padding:12px 6px;text-align:center}.map-rail .map-num{margin:0}.map-main{display:grid;grid-template-rows:1fr 1.2fr;gap:12px}.map-story{border-color:#76603d}.map-preview{background:linear-gradient(160deg,#173941,#14262f 50%,#11131a);display:flex;flex-direction:column;justify-content:center}.map:has(#mode-preview:checked) .map-actions{display:none}.map:has(#mode-preview:checked) .map-main{grid-column:2/4}.map-note{font-size:13px;color:var(--muted);margin:15px 0 0}.news-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;margin:0 0 65px}.news-card{display:flex;flex-direction:column;border-top:3px solid var(--gold);background:var(--panel);padding:26px;border-radius:0 0 7px 7px}.news-card:nth-child(2){border-color:var(--mint)}.news-card:nth-child(3){border-color:var(--blue)}.news-card .meta{margin-bottom:22px;gap:8px;line-height:1.7}.news-card h2{font-size:25px;line-height:1.25}.news-card h2 a{color:var(--text);text-decoration:none}.news-card p{font-size:16px;color:var(--muted)}.news-card .read{margin-top:auto;padding-top:12px;font-size:14px}.article{max-width:780px;margin:0 auto;padding-bottom:70px}.article .hero{padding-top:60px}.article h1{font-size:48px}.article .body p{font-size:19px;color:#d3d7df}.article .back{display:inline-block;margin-top:35px;font-size:14px}.empty{padding:30px;background:var(--panel)}details.review-notes{background:var(--panel);padding:20px;border-radius:6px;margin-bottom:30px}details.review-notes summary{cursor:pointer;font-family:Archivo}details.review-notes li{font-size:15px}.legal-identity dl{display:grid;grid-template-columns:180px 1fr;gap:10px;margin:0}.legal-identity dt{color:var(--muted)}.legal-identity dd{margin:0}.legal-identity .missing{color:#ffb2ac}.print-note{color:var(--quiet);font-size:13px}.hub-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:60px}.hub-grid .map-cell{padding:26px}.hub-grid h2{font-size:26px}.hub-grid p{color:var(--muted)}
@media(max-width:1000px){.wrap{padding:0 28px}.doc-layout{grid-template-columns:190px minmax(0,1fr);gap:30px}.news-grid{grid-template-columns:1fr 1fr}.news-card:last-child{grid-column:1/-1}.map-grid{grid-template-columns:45px 1fr 2fr 1fr}.map-cell{padding:12px}.map-cell strong{font-size:14px}}
@media(max-width:700px){.wrap{padding:0 20px}.head-inner{min-height:0;padding-top:20px;padding-bottom:20px;align-items:flex-start;flex-direction:column;gap:18px}.site-nav{gap:10px 18px;font-size:14px}.hero{padding:42px 0 35px}.lead{font-size:18px}.doc-layout{display:block}.contents{position:static;border-bottom:1px solid var(--line);padding:0 0 20px;margin-bottom:34px;columns:2;column-gap:24px}.contents p{column-span:all}.contents a{break-inside:avoid;font-size:13px;padding:6px 0}.document h2{font-size:24px}.document p{font-size:16px}.map{padding:15px}.map-grid{grid-template-columns:35px 1fr 1.7fr;gap:8px;min-height:320px}.map-preview{display:none}.map-main{grid-column:3}.map:has(#mode-preview:checked) .map-main{grid-column:2/4}.map-cell{padding:10px}.map-cell small{font-size:11px}.map-cell strong{font-size:13px}.map-rail .map-cell{padding:12px 4px}.news-grid,.hub-grid{grid-template-columns:1fr}.news-card:last-child{grid-column:auto}.article h1{font-size:36px}.article .body p{font-size:17px}.network-figure{padding:16px}.network-figure svg{display:none}.network-steps{display:block;font-size:15px}.legal-identity dl{grid-template-columns:1fr;gap:3px}.legal-identity dd{margin-bottom:12px}.callout{padding:18px}.foot-inner{display:block}.foot-inner nav{margin-top:16px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
@media print{:root{color-scheme:light;color:#111;background:white;font-size:11pt}.site-head,.contents,.site-foot,.related,.skip,.map,details.review-notes{display:none}.wrap{padding:0;max-width:none}.hero{padding:0 0 20px}h1{font-size:28pt}.lead,.document p,.article .body p{color:#222;font-size:11pt}.doc-layout{display:block}.document{max-width:none}.document section{margin-bottom:18px;padding-bottom:12px;break-inside:avoid-page}a{color:#154c96}.callout{background:#f4f4f4;border-color:#555}.callout.review .label{color:#8c2727}.network-figure{background:white}.network-figure text{fill:#111}.network-figure rect{fill:#f5f5f5;stroke:#444}.network-figure .sub{fill:#333}.network-figure figcaption{color:#333}.meta{color:#555}.news-grid{display:block}.news-card{margin-bottom:18px;color:#111;background:white}.news-card h2 a{color:#111}.news-card p{color:#333}}

/* Legal pages share the established guide typography and private-preview chrome. */
.legal-provider{max-width:820px;margin:0 0 24px;padding:24px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.legal-provider h2{font-size:20px}.legal-provider dd{white-space:pre-line;overflow-wrap:anywhere}.legal-provider dt{font-size:15px}
.legal-related{display:flex;gap:20px;flex-wrap:wrap;margin:0 0 40px;font-size:15px}
.document-links{font-size:15px;overflow-wrap:anywhere}
@media(max-width:700px){.legal-provider{padding:20px 0}.legal-related{margin-bottom:30px}}
@media print{.legal-provider{break-inside:avoid;margin-bottom:18px;padding:12px 0;border-color:#aaa}.legal-provider h2{font-size:14pt}.legal-provider dt,.legal-provider dd{color:#222;font-size:10pt}.legal-related{display:none}.document-links{font-size:10pt}.legal-identity .missing{color:#8c2727}}