:root{--char:#1B1C1D;--char-2:#242526;--char-3:#2E2F31;--steel:#8C9196;--ink:#EDEBE6;--ink-2:#C3C0B8;--gold:#F2C230;--gold-soft:#3A3217;--red:#E0474C;--blue:#7FA7D9;--line:#3C3E41;
--disp:"Oswald","Arial Narrow",sans-serif;--body:"Open Sans",system-ui,sans-serif;--mono:"IBM Plex Mono",ui-monospace,Menlo,monospace}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important;animation:none!important}}
body{margin:0;background:var(--char);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;
 background-image:linear-gradient(rgba(255,255,255,.028) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.028) 1px,transparent 1px);background-size:32px 32px}
a{color:var(--gold)}
:focus-visible{outline:3px solid var(--gold);outline-offset:2px}
.shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.shell>*{min-width:0}
.side .sheets{min-width:0}
@media (max-width:900px){.shell{grid-template-columns:1fr}}
/* sidebar = sheet index */
.side{position:sticky;top:0;height:100vh;padding:22px 18px;display:flex;flex-direction:column;gap:18px;background:#141516}
@media (max-width:900px){.side{position:static;height:auto;padding:16px}}
.brand{border:2px solid var(--gold);padding:12px 14px}
.brand b{display:block;font-family:var(--disp);font-weight:700;font-size:1.25rem;letter-spacing:.08em;text-transform:uppercase;line-height:1.1}
.brand span{font-family:var(--mono);font-size:.66rem;color:var(--steel);letter-spacing:.08em;text-transform:uppercase}
.sheets{display:flex;flex-direction:column;gap:8px}
@media (max-width:900px){.sheets{flex-direction:row;overflow-x:auto}}
.sheets a{display:grid;grid-template-columns:40px 1fr;align-items:center;text-decoration:none;color:var(--ink-2);border:2px solid var(--line);padding:8px 10px;white-space:nowrap}
.sheets a .no{font-family:var(--mono);font-size:.72rem;color:var(--steel)}
.sheets a .lb{font-family:var(--disp);text-transform:uppercase;letter-spacing:.06em;font-size:.95rem}
.sheets a:hover{border-color:var(--gold);color:var(--ink)}
.sheets a[aria-current="page"]{background:var(--gold);border-color:var(--gold);color:#141516}
.sheets a[aria-current="page"] .no{color:#141516}
.side .rev{margin-top:auto;font-family:var(--mono);font-size:.66rem;color:var(--steel);line-height:1.7;border:2px solid var(--line);padding:10px}
@media (max-width:900px){.side .rev{display:none}}
/* main */
main{padding:0 0 60px;min-width:0}
.ruler{height:22px;background:repeating-linear-gradient(90deg,var(--steel) 0 1px,transparent 1px 10px),repeating-linear-gradient(90deg,var(--ink-2) 0 1px,transparent 1px 50px);background-size:100% 8px,100% 16px;background-repeat:no-repeat;background-position:0 0,0 0;opacity:.55}
.pad{padding:28px 40px;max-width:1060px}
@media (max-width:640px){.pad{padding:22px 16px}}
.titleblock{display:grid;grid-template-columns:1fr auto;gap:0;border:2px solid var(--ink-2)}
@media (max-width:640px){.titleblock{grid-template-columns:1fr}}
.titleblock .t{padding:22px 24px}
.titleblock .meta{display:grid;grid-template-rows:repeat(4,auto);background:var(--char-2)}
.titleblock .meta div{padding:8px 16px;font-family:var(--mono);font-size:.7rem;color:var(--ink-2);border:1px solid var(--line)}
.titleblock .meta b{display:block;color:var(--steel);font-weight:400;font-size:.62rem;letter-spacing:.1em;text-transform:uppercase}
.kick{font-family:var(--mono);font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--gold)}
h1,h2,h3{font-family:var(--disp);font-weight:600;text-transform:uppercase;letter-spacing:.02em;line-height:1.05;margin:0}
h1{font-size:clamp(2.2rem,5.4vw,4.2rem);margin:10px 0 14px}
h1 .g{color:var(--gold)}
h2{font-size:clamp(1.5rem,3vw,2.2rem);margin:0 0 10px}
h3{font-size:1.15rem}
p{margin:0 0 1em;max-width:68ch;color:var(--ink-2)}
.lede{font-size:1.08rem;color:var(--ink)}
.spec{width:100%;border-collapse:collapse;margin:24px 0;font-size:.92rem}
.spec td{border:1px solid var(--line);padding:12px 14px;vertical-align:top}
.spec td.k{font-family:var(--mono);font-size:.72rem;text-transform:uppercase;letter-spacing:.08em;color:var(--steel);width:34%}
.spec td.v{font-family:var(--disp);font-size:1.6rem;color:var(--gold);width:22%;white-space:nowrap}
.spec td.n{color:var(--ink-2)}
@media (max-width:640px){.spec td.k{width:auto}.spec,.spec tbody,.spec tr,.spec td{display:block}.spec td{border:1px solid var(--line)}}
.callout{display:grid;grid-template-columns:auto 1fr;gap:16px;align-items:start;border:2px solid var(--gold);background:var(--gold-soft);padding:16px 18px;margin:22px 0}
.callout .tag{font-family:var(--mono);font-size:.7rem;color:#141516;background:var(--gold);padding:3px 8px;letter-spacing:.1em}
.callout p{margin:0;color:var(--ink)}
.ev{display:inline-block;font-family:var(--mono);font-size:.7rem;color:var(--ink-2);border:1px solid var(--line);padding:3px 8px;line-height:1.7;margin-top:8px}
.sec{margin-top:46px}
.detail{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:16px}
@media (max-width:760px){.detail{grid-template-columns:1fr}}
.dt{border:2px solid var(--line);background:var(--char-2);padding:16px 18px;position:relative}
.dt .id{position:absolute;top:10px;right:12px;width:30px;height:30px;border:2px solid var(--gold);border-radius:50%;display:grid;place-items:center;font-family:var(--mono);font-size:.72rem;color:var(--gold)}
.dt .cat{font-family:var(--mono);font-size:.66rem;text-transform:uppercase;letter-spacing:.12em;color:var(--steel)}
.dt h3{margin:6px 40px 8px 0}
.dt p{font-size:.92rem;margin:0}
.next{display:flex;justify-content:flex-end;margin-top:40px}
.next a{font-family:var(--disp);text-transform:uppercase;letter-spacing:.08em;text-decoration:none;color:#141516;background:var(--gold);border:2px solid var(--gold);padding:12px 20px}
.next a:hover{background:transparent;color:var(--gold)}
/* prototype */
.rig{border:2px solid var(--ink-2);margin-top:20px}
.rig-top{display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;padding:12px 16px;background:#141516}
.rig-top .lbl{font-family:var(--disp);text-transform:uppercase;letter-spacing:.1em}
.sw{display:inline-flex;border:2px solid var(--gold)}
.sw button{appearance:none;cursor:pointer;border:0;background:transparent;color:var(--gold);font-family:var(--mono);font-size:.74rem;letter-spacing:.1em;text-transform:uppercase;padding:8px 16px}
.sw button[aria-pressed="true"]{background:var(--gold);color:#141516}
.rig-body{display:grid;grid-template-columns:1.1fr 1fr}
@media (max-width:860px){.rig-body{grid-template-columns:1fr}}
.fields{padding:16px;display:grid;gap:10px;align-content:start}
.fld{border:2px solid var(--line);padding:10px 12px}
.fld .k{font-family:var(--mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel)}
.fld .v{font-family:var(--mono);font-size:.84rem;margin-top:4px;word-break:break-word}
.fld.bad{border-color:var(--red)}.fld.bad .v{color:#F4A3A6}
.fld.good{border-color:var(--gold)}.fld.good .v{color:var(--gold)}
.fleet{padding:16px;background:var(--char-2)}
.fleet .cnt{font-family:var(--disp);font-size:3.2rem;line-height:1;color:var(--ink)}
.fleet .cnt small{font-size:1rem;color:var(--steel);margin-left:6px;letter-spacing:.08em}
.grid443{display:grid;grid-template-columns:repeat(auto-fill,minmax(11px,1fr));gap:3px;margin:14px 0}
.grid443 i{aspect-ratio:1;border:1px solid var(--red);background:rgba(224,71,76,.35);transition:background .5s,border-color .5s}
[data-mode="fixed"] .grid443 i{border-color:var(--gold);background:var(--gold)}
.fleet .h{font-family:var(--mono);font-size:.74rem;color:var(--ink-2)}
/* channels */
.chan{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:18px}
@media (max-width:760px){.chan{grid-template-columns:1fr 1fr}}
.ch{border:2px solid var(--line);padding:16px;text-align:center;background:var(--char-2)}
.ch b{display:block;font-family:var(--disp);font-size:1.4rem;text-transform:uppercase;letter-spacing:.06em}
.ch span{font-family:var(--mono);font-size:.7rem;color:#F4A3A6}
.ch.on{border-color:var(--gold)} .ch.on span{color:var(--gold)}
.hub{margin-top:14px}
/* plan */
.gantt{border:2px solid var(--ink-2);margin-top:18px;overflow-x:auto}
.gantt table{border-collapse:collapse;width:100%;min-width:640px;font-size:.88rem}
.gantt th,.gantt td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.gantt th{font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);background:#141516;font-weight:400}
.gantt td.bar{padding:6px}
.gantt td.bar span{display:block;height:22px;background:var(--gold)}
.gantt td.bar.b span{background:var(--blue)} .gantt td.bar.c span{background:var(--ink-2)}
.gantt .wk{display:none}
@media (max-width:640px){.gantt table{min-width:0}.gantt th:not(:first-child),.gantt td:not(:first-child){display:none}.gantt .wk{display:inline-block;margin-left:8px;font-style:normal;font-family:var(--mono);font-size:.66rem;color:#141516;background:var(--gold);padding:1px 6px}}
.note{border:2px solid var(--line);padding:18px;margin-top:40px;background:var(--char-2)}
footer{margin-top:50px;border:2px solid var(--line);padding:22px;display:grid;grid-template-columns:1.3fr 1fr;gap:20px;background:#141516}
@media (max-width:760px){footer{grid-template-columns:1fr}}
footer h3{font-size:1.3rem;margin-bottom:6px}
footer p{font-size:.88rem}
footer .ln{display:flex;flex-direction:column;gap:8px}
footer .ln a{font-family:var(--mono);font-size:.82rem;text-decoration:none;color:var(--ink);border:2px solid var(--line);padding:9px 12px}
footer .ln a:hover{border-color:var(--gold);color:var(--gold)}
footer .disc{grid-column:1/-1;font-family:var(--mono);font-size:.68rem;color:var(--steel);line-height:1.8;margin:0}