:root{--bg:#ffffff;--surface:#f2f6f6;--ink:#1f2529;--muted:#4c585e;--accent:#0e7470;--accent-ink:#ffffff;--accent2:#22282d;--line:#d6e0e0;--hero-ink:#ffffff;--r:6px;--maxw:1180px;--measure:68ch;--hf:'Scope One', Georgia, serif;--bf:'Source Sans 3', Arial, sans-serif}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:17px/1.65 var(--bf)}
img{max-width:100%;height:auto;display:block}
a{color:var(--accent);text-underline-offset:.18em}
h1,h2,h3,h4{font-family:var(--hf);line-height:1.18;margin:1.6em 0 .5em;font-weight:400;letter-spacing:0}
h1{font-size:clamp(2rem,5vw,3.5rem);margin-top:0}
h2{font-size:clamp(1.4rem,3vw,2rem)}h3{font-size:1.2rem}
p,ul,ol,table,details{margin:0 0 1.1em}
.wrap{max-width:max(var(--maxw),min(88vw,1760px));margin:0 auto;padding:0 20px}
@media(min-width:1800px){body article.prose>:is(p,ul,ol,h2,h3,h4,blockquote,dl,details,.callout,.disclosure,.table-wrap){max-width:52rem}}
.skip{position:absolute;left:-999px}.skip:focus{left:10px;top:10px;background:var(--surface);padding:8px;z-index:9}
header.site{border-bottom:1px solid var(--line);background:var(--surface)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;padding-top:14px;padding-bottom:14px;flex-wrap:wrap}
.brand{font-family:var(--hf);font-weight:800;font-size:1.25rem;color:var(--ink);text-decoration:none;display:flex;align-items:center;gap:10px}
.brand svg{flex:none}
nav.main ul{list-style:none;display:flex;flex-wrap:wrap;gap:4px 18px;margin:0;padding:0}
nav.main a{color:var(--ink);text-decoration:none;font-size:.95rem;padding:4px 0;border-bottom:2px solid transparent}
nav.main a[aria-current]{border-color:var(--accent)}
.menu-btn{display:none}
@media(max-width:760px){.menu-btn{display:inline-block;background:none;border:1px solid var(--line);color:var(--ink);border-radius:var(--r);padding:6px 12px;font:inherit}
nav.main{width:100%;display:none}nav.main.open{display:block}nav.main ul{flex-direction:column;gap:6px}}
.hero{position:relative;overflow:hidden}
.hero .wrap{padding-top:56px;padding-bottom:56px}
.hero .lead{font-size:1.18rem;color:var(--muted);max-width:60ch}
.hero.full{color:var(--hero-ink);min-height:440px;display:flex;align-items:flex-end}
.hero.full img.bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.hero.full::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,.05),rgba(0,0,0,.62))}
.hero.full .wrap{position:relative;z-index:1;width:100%}.hero.full .lead{color:inherit;opacity:.92}
.hero.split .wrap{display:grid;grid-template-columns:1.1fr .9fr;gap:40px;align-items:center}
.hero.split img{border-radius:var(--r);aspect-ratio:4/3;object-fit:cover;width:100%}
.hero.banner img{width:100%;max-height:380px;object-fit:cover;border-radius:var(--r);margin-top:28px}
.hero.plain{background:var(--surface);border-bottom:1px solid var(--line)}
@media(max-width:760px){.hero.split .wrap{grid-template-columns:1fr}.hero.full{min-height:340px}.hero .wrap{padding-top:36px;padding-bottom:36px}}
.page{display:grid;gap:48px;padding-top:40px;padding-bottom:64px}
.page.toc-layout{grid-template-columns:220px minmax(0,1fr)}
.page.toc-layout .toc{position:sticky;top:20px;align-self:start;font-size:.92rem;border-left:3px solid var(--accent);padding-left:14px}
.page.toc-layout .toc ul{list-style:none;padding:0;margin:0}.page.toc-layout .toc li{margin:.35em 0}
.page.toc-layout .toc a{color:var(--muted);text-decoration:none}
@media(max-width:860px){.page.toc-layout{grid-template-columns:1fr}.page.toc-layout .toc{position:static}}
/* Content uses the full container width (cards, grids, tables); only running text keeps a readable measure. */
article.prose{max-width:none;min-width:0}
article.prose>:is(p,ul,ol,h2,h3,h4,blockquote,dl,details,.callout,.disclosure,.table-wrap){max-width:47.5rem;margin-left:auto;margin-right:auto}
.page.toc-layout article.prose>*{margin-left:0;margin-right:0}
/* A heading that introduces a full-width block (cards, grid, table) lines up with that block, not the text column. */
body article.prose>:is(h2,h3):has(+ :is(.cards,nav,div,table,section,ul.grid)){max-width:none;margin-left:0;margin-right:0}
.page.wide article.prose>*{max-width:none}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin:0 0 1.4em}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:20px}
.card h3{margin-top:0}.card p:last-child{margin-bottom:0}
a.card{display:block;color:var(--ink);text-decoration:none}a.card:hover{border-color:var(--accent)}
.callout{border-left:4px solid var(--accent2);background:var(--surface);padding:14px 18px;border-radius:0 var(--r) var(--r) 0;margin:0 0 1.2em}
.table-wrap{overflow-x:auto;margin:0 0 1.2em}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{border-bottom:1px solid var(--line);padding:9px 10px;text-align:left;vertical-align:top}
th{font-family:var(--hf);background:var(--surface)}
details{border:1px solid var(--line);border-radius:var(--r);padding:10px 16px;background:var(--surface)}
summary{cursor:pointer;font-weight:600}
.steps{counter-reset:s;list-style:none;padding:0}.steps li{counter-increment:s;position:relative;padding-left:44px;margin-bottom:1em}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--accent);color:var(--accent-ink);display:grid;place-items:center;font-weight:700;font-size:.9rem}
.btn{display:inline-block;background:var(--accent);color:var(--accent-ink);padding:10px 18px;border-radius:var(--r);text-decoration:none;font-weight:600;border:0;font:inherit;cursor:pointer}
.aff{border:1px dashed var(--accent);border-radius:var(--r);padding:16px 18px;margin:0 0 1.2em;background:var(--surface)}
.aff .tag{font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.disclosure{font-size:.88rem;color:var(--muted);border:1px solid var(--line);border-radius:var(--r);padding:10px 14px;margin:0 0 1.6em}
.meta{font-size:.88rem;color:var(--muted)}
dl dt{font-family:var(--hf);font-weight:700;margin-top:1em}dl dd{margin:.2em 0 0 0;color:var(--ink)}
footer.site{border-top:1px solid var(--line);background:var(--surface);font-size:.92rem;color:var(--muted)}
footer.site .wrap{padding-top:32px;padding-bottom:32px;display:grid;gap:18px}
footer.site ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px 18px}
footer.site a{color:var(--muted)}
.wt{font-size:17.5px}
.wt header.site{background:#22282d;border-bottom:3px solid #0e7470}
.wt .brand{color:#ffffff;font-weight:400;font-size:1.4rem}
.wt nav.main a{color:#d7e1e2;font-size:.95rem}
.wt nav.main a:hover{color:#ffffff}
.wt nav.main a[aria-current]{color:#ffffff;border-color:#2ab3ac}
.wt .menu-btn{color:#ffffff;border-color:rgba(255,255,255,.4)}
.wt .hero{background:#f2f6f6;border-bottom:1px solid var(--line)}
.wt .hero .wrap{padding-top:64px;padding-bottom:64px}
.wt .hero .kicker{display:inline-block;font-family:'IBM Plex Mono',monospace;font-size:.78rem;text-transform:uppercase;letter-spacing:.14em;color:#ffffff;background:#0e7470;padding:5px 10px;border-radius:3px;margin:0 0 1.1em}
.wt .hero h1{color:#22282d;max-width:22ch;line-height:1.12}
.wt .hero .lead{color:#3a454b;font-size:1.2rem;max-width:58ch}
.wt .hero::before{content:"";position:absolute;inset:0;background:repeating-linear-gradient(90deg,transparent 0 119px,rgba(14,116,112,.06) 119px 120px);pointer-events:none}
.wt .hero .wrap{position:relative}
.wt .hero.split img{border-radius:6px;box-shadow:0 18px 40px rgba(34,40,45,.18)}
.wt.p-index .hero.plain .wrap{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);column-gap:56px;row-gap:0;align-items:center}
.wt.p-index .hero.plain .kicker{justify-self:start}
.wt.p-index .hero.plain .wrap>.bp{grid-column:2;grid-row:1/span 3}
.wt.p-index .hero.plain .wrap>:not(.bp){grid-column:1}
@media(max-width:900px){.wt.p-index .hero.plain .wrap{grid-template-columns:1fr;gap:20px}.wt.p-index .hero.plain .wrap>.bp{grid-column:1;grid-row:auto}}
.wt .prose h2{color:#22282d;position:relative;padding-top:.7em}
.wt .prose h2::before{content:"";position:absolute;top:0;left:0;width:48px;height:3px;background:#0e7470}
.wt .prose h3{color:#22282d}
.wt .cards{gap:16px}
.wt .card{background:#ffffff;border:1px solid var(--line);border-top:4px solid #22282d;border-radius:0 0 6px 6px;padding:20px 22px}
.wt a.card:hover{border-top-color:#0e7470;box-shadow:0 10px 24px rgba(34,40,45,.1)}
.wt .card h3{margin-bottom:.4em;font-size:1.2rem}
.wt .callout{border-left:0;border-radius:6px;background:#e6f2f1;padding:16px 20px 16px 52px;position:relative}
.wt .callout::before{content:"i";position:absolute;left:16px;top:16px;width:24px;height:24px;border-radius:50%;background:#0e7470;color:#fff;font:600 .9rem/24px 'IBM Plex Mono',monospace;text-align:center}
.wt .table-wrap{border:1px solid var(--line);border-radius:6px}
body.wt article.prose>:is(h2,h3):has(+ .table-wrap){max-width:47.5rem;margin-left:auto;margin-right:auto}
@media(min-width:1800px){body.wt article.prose>:is(h2,h3):has(+ .table-wrap){max-width:52rem}}
.wt table{font-size:.97rem}
.wt th{background:#22282d;color:#ffffff;font-family:'IBM Plex Mono',monospace;font-weight:500;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em}
.wt tbody tr:nth-child(even) td{background:#f6f9f9}
.wt tbody td:first-child{font-weight:600;white-space:nowrap}
@media(max-width:600px){.wt tbody td:first-child{white-space:normal}}
.wt details{border-radius:6px;background:#ffffff}
.wt summary{color:#22282d}
.wt .steps li::before{background:#22282d;border-radius:4px;font-family:'IBM Plex Mono',monospace;font-weight:500}
.wt figure.ph{margin:0 auto 2em;max-width:62rem}
.wt figure.ph img{border-radius:6px;aspect-ratio:16/8;object-fit:cover;width:100%}
.wt figure.ph figcaption{font-size:.88rem;color:var(--muted);margin-top:.5em}
.wt footer.site{background:#22282d;color:#c9d3d5;border-top:3px solid #0e7470}
.wt footer.site a{color:#7fd6d0}
/* Boarding pass CSS art */
.wt .bp{display:grid;grid-template-columns:1fr 128px;background:#ffffff;border-radius:12px;box-shadow:0 20px 44px rgba(34,40,45,.16);overflow:hidden;max-width:560px;width:100%;justify-self:end}
.wt .bp-main{padding:22px 24px;border-right:2px dashed #c3d0d1}
.wt .bp-stub{background:#22282d;color:#ffffff;padding:22px 16px;display:flex;flex-direction:column;justify-content:space-between}
.wt .bp-l{font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.16em;text-transform:uppercase;color:#0e7470;margin:0 0 .8em}
.wt .bp-stub .bp-l{color:#7fd6d0}
.wt .bp-route{display:flex;align-items:center;justify-content:space-between;gap:10px;color:#0e7470;margin-bottom:1em}
.wt .bp-route span{font-family:var(--hf);font-size:1.7rem;color:#22282d;line-height:1.1}
.wt .bp-route small{display:block;font-family:'IBM Plex Mono',monospace;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.wt .bp dl{display:grid;grid-template-columns:1fr 1fr;gap:10px 16px;margin:0;border-top:1px solid var(--line);padding-top:14px}
.wt .bp dt{margin:0;font-family:'IBM Plex Mono',monospace;font-weight:500;font-size:.66rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.wt .bp dd{margin:0;font-weight:600}
.wt .bp-big{margin:0}
.wt .bp-bars{height:48px;margin:0;background:repeating-linear-gradient(90deg,#ffffff 0 2px,transparent 2px 4px,#ffffff 4px 5px,transparent 5px 9px)}
/* Signature: split-flap departure board */
.wt .db{background:#22282d;color:#e9eef0;border-radius:10px;padding:22px 22px 14px;margin:0 0 2.6em;box-shadow:0 14px 34px rgba(34,40,45,.18)}
.wt .db-top{display:flex;justify-content:space-between;align-items:baseline;gap:16px;flex-wrap:wrap;border-bottom:1px solid #3a434a;padding-bottom:12px;margin-bottom:6px}
.wt .db-h{font-family:var(--hf);font-size:1.45rem;color:#ffffff;margin:0}
.wt .db-sub{font-size:.85rem;color:#a9b6ba;margin:0}
.wt .db-head,.wt .db .r{display:grid;grid-template-columns:110px minmax(0,1fr) 92px 130px 150px;gap:18px;align-items:center}
.wt .db-head{padding:8px 12px;font-family:'IBM Plex Mono',monospace;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;color:#7fd6d0}
.wt .db ul{list-style:none;margin:0;padding:0}
.wt .db li{border-top:1px solid #333c43}
.wt .db .r{padding:10px 12px;color:#e9eef0;text-decoration:none;border-radius:6px}
.wt .db a.r:hover,.wt .db a.r:focus-visible{background:#2c343a}
.wt .db a.r:focus-visible{outline:2px solid #2ab3ac;outline-offset:0}
.wt .db a.r:hover .d{color:#7fd6d0}
.wt .db .d{font-family:'IBM Plex Mono',monospace;font-weight:500;text-transform:uppercase;letter-spacing:.04em;font-size:.98rem}
.wt .db .k{font-size:.9rem;color:#a9b6ba}
.wt .db .s{font-family:'IBM Plex Mono',monospace;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;color:#7fd6d0}
.wt .db .s.on{color:#22282d;background:#f2c94c;padding:3px 8px;border-radius:3px;justify-self:start}
.wt .db li.now .d{color:#f2c94c}
.wt .db .t small{font-family:'IBM Plex Mono',monospace;font-size:.68rem;color:#a9b6ba;margin-left:6px;text-transform:uppercase}
.wt .fl{display:inline-flex;gap:3px}
.wt .fl b{position:relative;display:inline-grid;place-items:center;width:1.45em;height:1.9em;background:#141a1e;color:#ffffff;font:500 1.05rem/1 'IBM Plex Mono',monospace;border-radius:3px;box-shadow:inset 0 -1px 0 rgba(255,255,255,.06)}
.wt .fl b::after{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:rgba(0,0,0,.65)}
.wt .fl.sm b{width:1.6em;height:2em;font-size:1.5rem}
.wt .bp-stub .fl b{background:#0e7470}
@media(min-width:1800px){.wt .db{padding:28px 30px 18px}.wt .db-head,.wt .db .r{grid-template-columns:130px minmax(0,1fr) 110px 170px 190px}.wt .db .d{font-size:1.1rem}}
@media(max-width:800px){.wt .db{padding:16px 12px 8px}.wt .db-head{display:none}
.wt .db .r{grid-template-columns:auto 1fr auto;grid-template-areas:"t d g" "t k s";gap:4px 12px;padding:12px 6px}
.wt .db .t{grid-area:t}.wt .db .d{grid-area:d;font-size:.9rem}.wt .db .g{grid-area:g;justify-self:end}.wt .db .k{grid-area:k;font-size:.82rem}.wt .db .s{grid-area:s;justify-self:end;font-size:.7rem}
.wt .db .t small{display:block;margin:2px 0 0}.wt .fl b{font-size:.9rem}}
@media(max-width:480px){.wt .bp{grid-template-columns:1fr 92px}.wt .bp-main{padding:18px}.wt .bp-route span{font-size:1.25rem}.wt .bp-route svg{width:40px}.wt .fl.sm b{font-size:1.1rem}}