:root {
  --blue: #1265b5;
  --navy: #173858;
  --ink: #243447;
  --muted: #677789;
  --line: #dce4ec;
  --wash: #f4f7fa;
  --red: #a8172b;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; color: var(--ink); background: #fff; font: 16px/1.7 Arial, Helvetica, sans-serif; }
h1, h2, h3, p, dl, dd, figure { margin: 0; }
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
button, input { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #237bd1; outline-offset: 4px; }
.wrap { width: min(1200px, calc(100% - 64px)); margin: 0 auto; }
.skip-link { position: fixed; left: 16px; top: -80px; z-index: 100; padding: 12px 20px; background: white; }
.skip-link:focus { top: 8px; }
.utility { background: var(--navy); color: #cfdeed; font-size: 12px; }
.utility .wrap { display: flex; align-items: center; justify-content: space-between; min-height: 32px; gap: 20px; }
.utility a { color: #fff; margin-left: 22px; }
.site-header { background: #fff; position: sticky; top: 0; z-index: 40; border-bottom: 1px solid var(--line); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 30px; min-height: 88px; }
.brand { display: flex; align-items: center; gap: 13px; color: var(--navy); flex: none; }
.brand:hover { text-decoration: none; }
.brand svg { width: 39px; height: 39px; }
.brand strong { display: block; font-size: 27px; letter-spacing: .02em; line-height: 1.2; }
.brand small { display: block; font-size: 12px; font-weight: 400; margin-top: 4px; color: var(--muted); }
.main-nav { display: flex; align-items: center; gap: 26px; }
.main-nav a { color: var(--ink); font-size: 14px; padding: 31px 0; border-bottom: 3px solid transparent; line-height: 24px; }
.main-nav a:hover, .main-nav a[aria-current="page"] { color: var(--blue); border-color: var(--blue); text-decoration: none; }
.main-nav a.portal { background: var(--blue); color: #fff; padding: 9px 17px; border: 0; }
.menu-toggle { display: none; border: 1px solid var(--line); background: #fff; color: var(--navy); padding: 8px 14px; cursor: pointer; }
.hero { position: relative; min-height: 390px; display: flex; align-items: center; background: #193c5c; color: #fff; overflow: hidden; }
.hero-photo { position: absolute; width: 100%; height: 100%; inset: 0; object-fit: cover; object-position: 50% 45%; }
.hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, rgba(13,42,68,.94), rgba(13,42,68,.71) 43%, rgba(13,42,68,.12)); }
.hero .wrap { position: relative; z-index: 1; padding: 56px 0; }
.hero h1 { font-size: clamp(30px, 3.5vw, 46px); line-height: 1.25; font-weight: 600; max-width: 750px; }
.hero p { margin-top: 20px; max-width: 590px; color: #eef5fc; font-size: 18px; line-height: 1.8; }
.hero .button { margin-top: 30px; border-color: #fff; color: #fff; background: transparent; }
.hero .button:hover { background: #fff; color: var(--navy); }
.button { display: inline-block; padding: 10px 25px; color: #fff; background: var(--blue); border: 1px solid var(--blue); font-size: 14px; text-align: center; }
.button:hover { text-decoration: none; background: #0c559b; color: #fff; }
.button.secondary { background: #fff; color: var(--blue); }
.button.secondary:hover { background: #eef5fc; }
.quick-access { border-bottom: 1px solid var(--line); background: #fff; }
.quick-access .wrap { display: grid; grid-template-columns: repeat(4, 1fr); }
.quick-access a { padding: 20px 22px; border-left: 1px solid var(--line); color: var(--ink); font-size: 15px; }
.quick-access a:last-child { border-right: 1px solid var(--line); }
.quick-access a::after { content: "→"; float: right; color: var(--blue); }
.quick-access a:hover { background: var(--wash); text-decoration: none; }
.section { padding: 62px 0; }
.section.alt { background: var(--wash); }
.section-title { text-align: center; margin-bottom: 36px; }
.section-title h2 { font-size: 29px; line-height: 1.35; font-weight: 600; color: var(--navy); }
.section-title h2::after { content: ""; display: block; width: 38px; height: 3px; margin: 15px auto 0; background: var(--blue); }
.section-title p { margin: 16px auto 0; max-width: 710px; color: var(--muted); font-size: 15px; }
.services { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 28px; }
.service { padding: 26px 28px 25px; background: #fff; border: 1px solid var(--line); border-top: 3px solid #5c92c7; }
.service h3 { color: var(--navy); font-size: 20px; font-weight: 600; }
.service p { font-size: 15px; margin: 13px 0 23px; color: var(--muted); }
.service a { font-size: 14px; }
.service-type { color: var(--blue); font-size: 14px; display: block; margin-bottom: 10px; }
.network-overview { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,470px); gap: 64px; align-items: start; }
.network-copy h3 { color: var(--navy); font-size: 23px; line-height: 1.4; font-weight: 600; }
.network-copy > p { margin-top: 18px; color: var(--muted); font-size: 15px; }
.network-facts { display: grid; grid-template-columns: repeat(2,1fr); margin: 28px 0; border-top: 1px solid var(--line); }
.network-facts > div { padding: 20px 0; border-bottom: 1px solid var(--line); }
.network-facts dt { font-size: 14px; color: var(--muted); }
.network-facts dd { font-size: 30px; line-height: 1.3; color: var(--blue); margin-top: 7px; }
.network-facts dd.small-value { font-size: 20px; padding-top: 9px; }
.resource-links { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; }
.resource-links a { padding: 12px 0; border-bottom: 1px solid var(--line); font-size: 14px; }
.resource-links a::after { content: "↗"; float: right; margin-left: 8px; }
.resource-links a.internal::after { content: "→"; }
.lan { padding: 22px; background: #fff; border: 1px solid #ccd6df; min-width: 0; container-type: inline-size; }
.lan-head { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; padding-bottom: 16px; margin-bottom: 17px; border-bottom: 1px solid var(--line); }
.lan-head span { font-size: 17px; font-weight: 600; color: var(--navy); }
.lan-head b { font: 12px var(--mono); }
.cells { display: grid; grid-template-columns: repeat(var(--lan-columns,16),1fr); gap: 4px; }
.cell { aspect-ratio: 1; border: 1px solid #c7d0d6; background: #f9fbfc; position: relative; cursor: default; border-radius: 1px; }
.cell.res { background: repeating-linear-gradient(45deg,transparent,transparent 3px,#cbd1d7 3px,#cbd1d7 4px); }
.cell.infra { background: #697b8c; border-color: #697b8c; }
.cell.member { background: var(--red); border-color: var(--red); }
.cell:hover, .cell:focus-visible { z-index: 20; border-color: #192f43; }
.cell::after { content: attr(data-as); position: absolute; z-index: 5; display: block; box-sizing: border-box; width: max-content; max-width: min(250px,50cqw); bottom: 135%; left: 50%; transform: translateX(-50%); background: #182b3d; color: #fff; padding: 7px 10px; font: 11px/1.6 var(--mono); white-space: pre-line; overflow-wrap: anywhere; pointer-events: none; opacity: 0; }
.cell:hover::after, .cell:focus-visible::after { opacity: 1; }
.cell.top-row::after { bottom: auto; top: 135%; }
.cell.left-half::after { left: 0; right: auto; transform: none; }
.cell.right-half::after { right: 0; left: auto; transform: none; }
.legend { display: flex; flex-wrap: wrap; gap: 8px 16px; margin-top: 18px; padding-top: 14px; border-top: 1px solid var(--line); color: var(--muted); font-size: 11px; }
.legend span { display: flex; align-items: center; gap: 6px; }
.sw { display: inline-block; width: 9px; height: 9px; border: 1px solid #c7d0d6; }
.sw.m { background: var(--red); border-color: var(--red); }
.sw.i { background: #697b8c; border-color: #697b8c; }
.sw.r { background: repeating-linear-gradient(45deg,transparent,transparent 2px,#cbd1d7 2px,#cbd1d7 3px); }
.lan-note { font-size: 12px; line-height: 1.6; margin-top: 13px; color: var(--muted); }
.data-status { font-size: 12px; line-height: 1.6; color: var(--muted); margin-top: 10px; }
.members-grid { display: grid; grid-template-columns: repeat(5,minmax(0,1fr)); gap: 18px; margin: 0; padding: 0; list-style: none; }
.member-item { min-width: 0; }
.member-link { display: flex; flex-direction: column; height: 100%; color: var(--ink); }
.member-link:hover { text-decoration: none; color: var(--blue); }
.member-logo { border: 1px solid var(--line); background: #fff; height: 100px; padding: 20px 14px; display: flex; align-items: center; justify-content: center; margin-bottom: 12px; }
.member-logo[data-background="dark"] { background: #182b3d; border-color: #182b3d; }
.member-logo img { display: block; max-width: 100%; max-height: 60px; width: auto; height: auto; object-fit: contain; }
.member-logo img[data-kind="icon"] { max-width: 48px; max-height: 48px; }
.member-name { font-size: 13px; line-height: 1.5; text-align: center; overflow-wrap: anywhere; }
.member-asn { font: 11px/1.5 var(--mono); color: var(--muted); text-align: center; margin-top: 5px; }
.section-more { display: block; margin: 28px auto 0; text-align: center; font-size: 14px; }
.contact-band { background: #edf4fa; border-top: 1px solid #d9e7f3; padding: 38px 0; }
.contact-band .wrap { display: flex; justify-content: space-between; gap: 30px; align-items: center; }
.contact-band h2 { font-size: 24px; color: var(--navy); font-weight: 600; }
.contact-band p { margin-top: 5px; font-size: 15px; color: var(--muted); }
.page-banner { padding: 36px 0 40px; background: #eef4fa; border-bottom: 1px solid #dbe6f0; }
.breadcrumbs { display: flex; gap: 10px; align-items: center; font-size: 12px; color: var(--muted); margin-bottom: 18px; }
.page-banner h1 { color: var(--navy); font-size: 34px; line-height: 1.3; font-weight: 600; }
.page-banner p { color: var(--muted); margin-top: 12px; max-width: 730px; }
.page-layout { display: grid; grid-template-columns: 215px minmax(0,1fr); gap: 54px; align-items: start; padding: 48px 0 64px; }
.side-nav { border: 1px solid var(--line); font-size: 14px; }
.side-nav h2 { background: var(--navy); color: #fff; font-size: 17px; font-weight: 500; padding: 16px 20px; }
.side-nav a { display: block; color: var(--ink); padding: 13px 20px; border-bottom: 1px solid var(--line); }
.side-nav a:last-child { border: 0; }
.side-nav a:hover { color: var(--blue); background: var(--wash); text-decoration: none; }
.content-section { margin-bottom: 42px; scroll-margin-top: 110px; }
.content-section:last-child { margin-bottom: 0; }
.content-section h2 { font-size: 25px; color: var(--navy); line-height: 1.4; font-weight: 600; padding-bottom: 15px; border-bottom: 1px solid var(--line); margin-bottom: 23px; }
.content-section h3 { font-size: 18px; color: var(--navy); font-weight: 600; margin: 24px 0 10px; }
.content-section p + p { margin-top: 16px; }
.content-section > p { max-width: 850px; }
.content-section ul { padding-left: 22px; }
.content-section li { margin: 8px 0; }
.content-section .button { margin-top: 18px; }
.note { background: var(--wash); padding: 18px 22px; border-left: 3px solid #6e9ecb; color: #4d6278; font-size: 14px; margin-top: 22px; }
.table-wrap { overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.data-table th, .data-table td { text-align: left; border: 1px solid var(--line); padding: 13px 17px; vertical-align: top; }
.data-table th { background: #edf3f8; color: var(--navy); font-weight: 600; }
.data-table tbody tr:nth-child(even) td { background: #fafcfe; }
.data-table .free { color: #26724c; font-weight: 600; }
.technical-tables { display: grid; grid-template-columns: 1fr 1fr; gap: 30px; }
.technical-tables dl { font-size: 14px; }
.technical-tables dt { color: var(--muted); padding-top: 12px; }
.technical-tables dd { padding: 3px 0 12px; border-bottom: 1px solid var(--line); overflow-wrap: anywhere; }
.technical-tables .ip { font-family: var(--mono); font-size: 13px; }
.steps { list-style: none; padding: 0 !important; counter-reset: connection; }
.steps li { position: relative; padding: 0 0 25px 62px; margin: 0; }
.steps li::before { counter-increment: connection; content: counter(connection,decimal-leading-zero); position: absolute; left: 0; top: 0; background: #eaf2fa; color: var(--blue); width: 40px; height: 40px; display: grid; place-items: center; font-size: 17px; }
.steps h3 { margin-top: 0; }
.steps p { font-size: 15px; color: #56697b; }
.about-image { width: 100%; height: 285px; object-fit: cover; object-position: 50% 55%; margin: 24px 0 8px; }
.image-credit { font-size: 11px; color: var(--muted); }
.footer { background: #1d3654; color: #d8e3ed; padding: 42px 0 0; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.1fr; gap: 38px; padding-bottom: 34px; }
.footer h2 { font-size: 19px; color: #fff; font-weight: 600; margin-bottom: 10px; }
.footer h3 { color: #fff; font-weight: 500; font-size: 15px; margin-bottom: 13px; }
.footer p { font-size: 13px; line-height: 1.9; }
.footer a { color: #d8e3ed; display: block; font-size: 13px; line-height: 2.1; }
.footer-bottom { border-top: 1px solid #35506b; padding: 15px 0; font-size: 11px; color: #adbdcc; }
.footer-bottom .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.footer-bottom a { display: inline; font-size: inherit; }
@media(max-width:1080px) { .main-nav { gap: 18px; } .brand strong { font-size: 24px; } .network-overview { gap: 38px; grid-template-columns: 1fr 430px; } .page-layout { gap: 32px; grid-template-columns: 180px minmax(0,1fr); } }
@media(max-width:900px) {
  .wrap { width: calc(100% - 40px); }
  .header-inner { min-height: 76px; flex-wrap: wrap; gap: 0; }
  .navigation-ready .menu-toggle { display: block; }
  .main-nav { display: flex; flex-basis: 100%; padding: 10px 0 20px; flex-direction: column; gap: 0; align-items: stretch; }
  .navigation-ready .main-nav { display: none; }
  .navigation-ready .nav-open .main-nav { display: flex; }
  .main-nav a { padding: 10px 0; border: 0; }
  .main-nav a.portal { margin-top: 10px; text-align: center; }
  .quick-access a { padding: 18px 14px; font-size: 13px; }
  .network-overview { grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 28px; }
  .lan { padding: 17px; } .lan-head { flex-wrap: wrap; } .cells { gap: 3px; }
  .services { gap: 15px; } .service { padding: 22px 18px; }
  .members-grid { grid-template-columns: repeat(3,minmax(0,1fr)); gap: 24px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 28px; }
  .page-layout { grid-template-columns: 1fr; gap: 32px; }
  .side-nav { display: flex; flex-wrap: wrap; }
  .side-nav h2 { flex: 1 0 100%; }
  .side-nav a { border-bottom: 0; font-size: 13px; padding: 12px 18px; }
}
@media(max-width:600px) {
  .utility .wrap { min-height: 29px; } .utility .location { font-size: 11px; } .utility a { margin-left: 12px; font-size: 11px; }
  .utility .secondary-utility { display: none; }
  .brand svg { width: 32px; height: 32px; } .brand strong { font-size: 22px; } .brand small { font-size: 10px; }
  .hero { min-height: 340px; } .hero .wrap { padding: 40px 0 50px; } .hero h1 { max-width: 310px; } .hero p { font-size: 16px; max-width: 335px; } .hero::after { background: rgba(15,44,72,.74); }
  .hero-photo { object-position: 55% 50%; }
  .quick-access .wrap { grid-template-columns: 1fr 1fr; width: 100%; } .quick-access a { border-bottom: 1px solid var(--line); padding: 15px 20px; }
  .section { padding: 42px 0; } .section-title { margin-bottom: 28px; } .section-title h2 { font-size: 25px; }
  .services, .network-overview, .technical-tables { grid-template-columns: 1fr; }
  .services { gap: 16px; } .service p { margin-bottom: 18px; }
  .network-copy h3 { font-size: 21px; } .network-facts { margin: 20px 0; }
  .lan { padding: 20px; } .lan-head { flex-wrap: nowrap; } .lan-head span { font-size: 15px; } .lan-head b { font-size: 11px; }
  .members-grid { grid-template-columns: repeat(2,minmax(0,1fr)); gap: 23px 16px; }
  .contact-band .wrap { align-items: flex-start; flex-direction: column; gap: 20px; }
  .contact-band h2 { font-size: 21px; }
  .page-banner { padding: 24px 0 30px; } .page-banner h1 { font-size: 29px; } .page-banner p { font-size: 15px; }
  .page-layout { padding: 30px 0 44px; } .content-section h2 { font-size: 23px; }
  .data-table th, .data-table td { padding: 10px 12px; }
  .steps li { padding-left: 54px; }
  .footer-grid { gap: 28px 18px; } .footer-grid > div:first-child { grid-column: 1/-1; }
}
@media(prefers-reduced-motion:reduce) { html { scroll-behavior: auto; } }