/* ===== Switchback site layer =====
   Layout idea: a route up a mountain. One bold move: the night-ink topo hero with the switchback
   route cut into it. Everything below stays an engineering sheet: paper, ink rules, mono callouts. */
@font-face{font-family:"Barlow Condensed";font-weight:500;font-display:swap;src:url(../fonts/barlow-condensed-500.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:600;font-display:swap;src:url(../fonts/barlow-condensed-600.woff2) format("woff2")}
@font-face{font-family:"Barlow Condensed";font-weight:700;font-display:swap;src:url(../fonts/barlow-condensed-700.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-sans-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-sans-500.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:600;font-display:swap;src:url(../fonts/ibm-plex-sans-600.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-mono-400.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Mono";font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-mono-500.woff2) format("woff2")}
:root{
  --night:#0D1722;      /* hero and header ground */
  --night-2:#16263A;    /* raised surface on night */
  --night-rule:#263A50; /* rules on night */
  --mist:#9FB0C2;       /* secondary text on night */
  --blue:#3D6BE0;       /* logo blue */
  --blue-hi:#6E93F5;    /* blue for text on night */
}
html{scroll-padding-top:84px}
body{background-color:var(--paper)}
.skip{position:absolute;left:-999px;top:0;background:#fff;color:var(--ink);padding:10px 14px;z-index:50}
.skip:focus{left:12px;top:12px}

/* ---------- Header ---------- */
.site-head{position:sticky;top:0;z-index:30;background:rgba(13,23,34,.96);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);border-bottom:1px solid var(--night-rule)}
.site-head .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.logo{display:flex;align-items:center;gap:11px;text-decoration:none;color:#fff;flex-shrink:0}
.logo b{font-family:var(--font-display);font-size:1.6rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;line-height:1}
.logo .tag{font-family:var(--font-mono);font-size:.66rem;letter-spacing:.08em;text-transform:uppercase;color:var(--mist);margin-left:6px;padding-left:14px;border-left:1px solid var(--night-rule);white-space:nowrap}
.main-nav{display:flex;align-items:center;gap:26px}
.main-nav a{color:#D5DEE7;text-decoration:none;font-weight:500;font-size:.95rem;padding:6px 0;border-bottom:2px solid transparent;transition:color .15s,border-color .15s}
.main-nav a:hover{color:#fff;border-bottom-color:var(--blue)}
.main-nav a[aria-current="page"]{color:#fff;border-bottom-color:var(--blue)}
.main-nav a.btn{padding:9px 16px;font-size:.9rem;border:2px solid var(--blue);background:var(--blue);color:#fff}
.main-nav a.btn:hover{background:#fff;border-color:#fff;color:var(--ink)}
.menu-btn{display:none;background:none;border:1px solid var(--night-rule);color:#fff;width:44px;height:40px;cursor:pointer;padding:0;align-items:center;justify-content:center}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{display:block;width:18px;height:2px;background:#fff;content:"";position:relative}
.menu-btn span::before{position:absolute;top:-6px}.menu-btn span::after{position:absolute;top:6px}
@media (max-width:1180px){.logo .tag{display:none}}
@media (max-width:1020px){
  .menu-btn{display:inline-flex}
  .main-nav{display:none;position:absolute;left:0;right:0;top:68px;background:var(--night);border-bottom:1px solid var(--night-rule);flex-direction:column;align-items:stretch;gap:0;padding:8px 24px 20px}
  .main-nav.open{display:flex}
  .main-nav a{padding:14px 0;border-bottom:1px solid var(--night-rule);font-size:1.05rem}
  .main-nav a.btn{margin-top:16px;text-align:center;padding:13px 16px}
}

/* ---------- Buttons on night ---------- */
.btn.blue{background:var(--blue);border-color:var(--blue);color:#fff}
.btn.blue:hover{background:#fff;border-color:#fff;color:var(--ink)}
.btn.line{background:transparent;border-color:#fff;color:#fff}
.btn.line:hover{background:#fff;color:var(--ink);border-color:#fff}
.btn{transition:background .15s,color .15s,border-color .15s,transform .15s}
.btn:active{transform:translateY(1px)}

/* ---------- Home hero ---------- */
.summit{position:relative;background:var(--night);color:#fff;overflow:hidden;border-bottom:2px solid var(--ink)}
.summit .art{position:absolute;inset:0}
.summit .art canvas{display:block;width:100%;height:100%}
.summit .art::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--night) 0%,rgba(13,23,34,.94) 30%,rgba(13,23,34,.45) 52%,rgba(13,23,34,0) 70%);pointer-events:none}
.summit .wrap{position:relative;z-index:2;padding-top:72px;padding-bottom:28px}
.summit .copy{max-width:660px}
.eyebrow{display:flex;align-items:center;gap:12px;font-family:var(--font-mono);font-size:.76rem;letter-spacing:.1em;text-transform:uppercase;color:var(--mist)}
.eyebrow i{flex:0 0 auto;width:12px;height:12px;border:2px solid var(--blue-hi);transform:rotate(45deg)}
.summit h1{font-size:clamp(2.7rem,5.3vw,4.5rem);line-height:.96;margin-top:22px;color:#fff;letter-spacing:0}
.summit h1 em{font-style:normal;color:var(--blue-hi)}
.summit .lede{font-size:1.2rem;line-height:1.55;color:#C6D2DE;margin-top:26px;max-width:33em}
.summit .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.summit .modes{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.summit .modes span{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;border:1px solid var(--night-rule);background:rgba(22,38,58,.7);color:#D5DEE7;padding:5px 11px}
.summit .modes b{color:var(--blue-hi);font-weight:500}
.block{position:relative;z-index:2;display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--night-rule);margin-top:44px}
.block div{padding:16px 18px 4px;border-left:1px solid var(--night-rule);min-width:0}
.block div:first-child{border-left:0;padding-left:0}
.block small{display:block;font-family:var(--font-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:#6F8296}
.block b{display:block;font-family:var(--font-display);font-weight:600;font-size:1.3rem;letter-spacing:.04em;text-transform:uppercase;margin-top:4px;line-height:1.1}
@media (max-width:900px){
  .summit{display:flex;flex-direction:column}
  .summit .art{order:2}
  .summit .tail{order:3}
  .summit .wrap{padding-top:52px}
  .summit .art{position:relative;inset:auto;height:330px;margin-top:8px}
  .summit .art::after{background:linear-gradient(180deg,var(--night) 0%,rgba(13,23,34,0) 22%)}
  .summit .wrap{padding-bottom:0}
  .summit .tail{padding-bottom:28px}
  .block{grid-template-columns:1fr 1fr;margin-top:0}
  .block div{padding:14px 14px 12px;border-bottom:1px solid var(--night-rule)}
  .block div:nth-child(odd){border-left:0;padding-left:0}
  .block div:nth-last-child(-n+2){border-bottom:0}
}

/* ---------- Page hero (inner pages) ---------- */
.page-hero{position:relative;background:var(--night);color:#fff;overflow:hidden;border-bottom:2px solid var(--ink)}
.page-hero .art{position:absolute;inset:0;opacity:.9}
.page-hero .art canvas{display:block;width:100%;height:100%}
.page-hero .art::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,var(--night) 0%,rgba(13,23,34,.9) 38%,rgba(13,23,34,.15) 100%)}
.page-hero .wrap{position:relative;z-index:2;padding-top:72px;padding-bottom:64px}
.page-hero h1{font-size:clamp(2.5rem,5.2vw,4.4rem);line-height:.98;margin-top:20px;max-width:15em;color:#fff}
.page-hero .lede{font-size:1.15rem;color:#C6D2DE;margin-top:22px;max-width:36em}
.page-hero .ctas{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.page-hero .jump{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px}
.page-hero .jump a{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.05em;text-transform:uppercase;text-decoration:none;color:#D5DEE7;border:1px solid var(--night-rule);background:rgba(22,38,58,.7);padding:6px 11px}
.page-hero .jump a:hover{background:var(--blue);border-color:var(--blue);color:#fff}
main > .page-hero + section,main > .page-hero + .strip + section{padding-top:80px}
@media (max-width:760px){.page-hero .wrap{padding-top:48px;padding-bottom:44px}main > .page-hero + section{padding-top:56px}}

/* ---------- Explore cards ---------- */
.explore{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));border:2px solid var(--ink);background:var(--sheet)}
.explore a{position:relative;display:grid;grid-template-columns:auto 1fr auto;gap:8px 22px;align-items:start;padding:34px 32px 36px;text-decoration:none;color:var(--ink);border-right:1px solid var(--ink);border-bottom:1px solid var(--ink);transition:background .18s,color .18s}
.explore a:nth-child(2n){border-right:0}
.explore a:nth-last-child(-n+2){border-bottom:0}
.explore .n{font-family:var(--font-display);font-weight:600;font-size:2rem;line-height:1;color:var(--dykem);transition:color .18s}
.explore h3{font-size:1.9rem}
.explore p{grid-column:2;color:var(--ink-soft);font-size:1rem;transition:color .18s}
.explore .go{font-family:var(--font-mono);font-size:1.3rem;line-height:1;transition:transform .18s}
.explore a:hover{background:var(--ink);color:#fff}
.explore a:hover p{color:#B9C6D3}
.explore a:hover .n{color:var(--blue-hi)}
.explore a:hover .go{transform:translateX(6px)}
@media (max-width:820px){.explore{grid-template-columns:1fr}.explore a{border-right:0;border-bottom:1px solid var(--ink) !important;padding:26px 22px}.explore a:last-child{border-bottom:0 !important}}

/* ---------- Pillars band (night) ---------- */
.band{background:var(--night);color:#fff;position:relative;overflow:hidden;border-top:2px solid var(--ink);border-bottom:2px solid var(--ink)}
.band .zig{position:absolute;right:-60px;top:-40px;height:140%;width:auto;opacity:.5;pointer-events:none}
.band .wrap{position:relative}
.band .mono{color:var(--mist)}
.band h2{color:#fff;font-size:clamp(2.6rem,5.6vw,4.6rem);line-height:.98;max-width:11em;margin-top:14px}
.band h2 em{font-style:normal;color:var(--blue-hi)}
.pillars{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:0;margin-top:56px;border-top:1px solid var(--night-rule)}
.pillars div{padding:26px 28px 6px 0;border-left:1px solid var(--night-rule);padding-left:28px}
.pillars div:first-child{border-left:0;padding-left:0}
.pillars .mono{color:var(--blue-hi)}
.pillars h3{color:#fff;font-size:1.7rem;margin:8px 0 10px}
.pillars p{color:#C6D2DE;font-size:1.02rem}
.band .see{color:var(--blue-hi);margin-top:44px}
.band .see:hover{color:#fff}
@media (max-width:820px){.pillars{grid-template-columns:1fr}.pillars div{border-left:0;padding:22px 0 18px;border-bottom:1px solid var(--night-rule)}.pillars div:last-child{border-bottom:0}}

/* ---------- Closing CTA ---------- */
.close{background:var(--ink);color:#fff;padding:0}
.close .wrap{display:grid;grid-template-columns:1.5fr 1fr;gap:40px;align-items:center;padding-top:76px;padding-bottom:76px}
.close h2{color:#fff;font-size:clamp(2.3rem,4.6vw,3.8rem)}
.close p{color:#B9C6D3;margin-top:16px;max-width:34em;font-size:1.08rem}
.close .ctas{display:flex;flex-direction:column;gap:12px;max-width:300px;justify-self:end;width:100%}
.close .addr{font-family:var(--font-mono);font-size:.86rem;color:var(--mist);margin-top:18px}
.close .addr a{color:#fff}
@media (max-width:820px){.close .wrap{grid-template-columns:1fr;padding-top:56px;padding-bottom:56px}.close .ctas{justify-self:start;max-width:none}}

/* ---------- Footer ---------- */
.site-foot{background:var(--night);color:#C6D2DE;border-top:1px solid var(--night-rule);padding:64px 0 36px}
.site-foot .wrap{display:block}
.foot-grid{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:40px}
.foot-brand p{margin-top:16px;max-width:24em;font-size:.95rem;color:var(--mist)}
.foot-brand .tagline{font-family:var(--font-display);font-size:1.6rem;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:#fff;margin-top:20px}
.site-foot h4{font-family:var(--font-mono);font-size:.68rem;font-weight:500;letter-spacing:.1em;text-transform:uppercase;color:#6F8296;margin:0 0 14px}
.site-foot ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.site-foot a{color:#D5DEE7;text-decoration:none;font-size:.96rem}
.site-foot a:hover{color:#fff;text-decoration:underline;text-decoration-color:var(--blue)}
.foot-base{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px 24px;margin-top:52px;padding-top:22px;border-top:1px solid var(--night-rule);font-family:var(--font-mono);font-size:.7rem;letter-spacing:.05em;text-transform:uppercase;color:#6F8296}
.foot-base a{font-size:inherit;color:var(--mist)}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px 24px}.foot-brand{grid-column:1 / -1}}

/* ---------- Small upgrades to the sheet sections ---------- */
.panel.cols article,.svc article,.cost-list article{transition:background .18s}
.panel.cols article:hover,.svc article:hover,.cost-list article:hover{background:#fff}
.op{transition:background .18s}
.op:hover{background:#fff}
.svc{grid-template-columns:repeat(auto-fit,minmax(215px,1fr))}
.svc article{border-right:1px solid var(--ink);border-bottom:0}
.lead-p{font-size:1.2rem;color:var(--ink-soft);max-width:38em}
.prose{max-width:46em}
.prose h2{font-size:1.9rem;margin:44px 0 12px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-soft)}
.prose p+p{margin-top:12px}
.prose ul{padding-left:20px;margin:10px 0}
.prose .mono{display:block;margin-bottom:28px}

/* ---------- Demo form ---------- */
.demo{display:grid;grid-template-columns:1.25fr 1fr;gap:0;border:2px solid var(--ink);background:var(--sheet)}
.demo form{padding:36px;display:grid;grid-template-columns:1fr 1fr;gap:18px 20px;align-content:start}
.demo .full{grid-column:1 / -1}
.demo label{display:block;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:6px}
.demo input,.demo select,.demo textarea{width:100%;font:400 1rem var(--font-body);color:var(--ink);background:#fff;border:1px solid var(--ink);border-radius:0;padding:11px 12px}
.demo textarea{min-height:110px;resize:vertical}
.demo input:focus-visible,.demo select:focus-visible,.demo textarea:focus-visible{outline:3px solid var(--dykem);outline-offset:1px}
.demo .btn{cursor:pointer;font-family:var(--font-body);width:100%;padding:15px 20px;font-size:1.02rem}
.demo .fine{font-size:.84rem;color:var(--ink-soft)}
.demo .sent{grid-column:1 / -1;border:2px solid var(--run);background:#fff;padding:16px 18px;font-size:.98rem}
.demo .sent[hidden]{display:none}
.demo aside{background:var(--ink);color:#fff;padding:36px;display:flex;flex-direction:column;gap:22px}
.demo aside h3{color:#fff;font-size:1.7rem}
.demo aside ol{list-style:none;margin:0;padding:0;display:grid;gap:18px;counter-reset:s}
.demo aside li{display:grid;grid-template-columns:38px 1fr;gap:12px;counter-increment:s;color:#C6D2DE;font-size:.98rem}
.demo aside li::before{content:"0" counter(s);font-family:var(--font-display);font-weight:600;font-size:1.5rem;color:var(--blue-hi);line-height:1.1}
.demo aside li b{display:block;color:#fff;font-weight:600}
.demo aside .addr{margin-top:auto;font-family:var(--font-mono);font-size:.84rem;color:var(--mist);border-top:1px solid var(--night-rule);padding-top:18px}
.demo aside .addr a{color:#fff}
@media (max-width:900px){.demo{grid-template-columns:1fr}.demo form{grid-template-columns:1fr;padding:24px 20px}.demo aside{padding:28px 20px}}

/* ---------- 404 ---------- */
.lost{padding:120px 0}
.lost h1{font-size:clamp(3rem,8vw,6rem)}
.lost p{margin-top:18px;font-size:1.15rem;color:var(--ink-soft)}
.lost .ctas{display:flex;gap:12px;flex-wrap:wrap;margin-top:30px}
@media (prefers-reduced-motion:reduce){*{transition:none !important}}

/* ---------- Ops product badge ---------- */
.logo .ops{font-style:normal;font-family:var(--font-display);font-weight:600;font-size:1.05rem;letter-spacing:.1em;text-transform:uppercase;color:#fff;border:2px solid var(--blue);padding:1px 8px 2px;margin-left:2px;line-height:1.2}
.m .who{font-family:var(--font-mono);font-size:.72rem;color:#9FB0C2}

/* ---------- Coverage week grid ---------- */
.cov{background:var(--ink);color:var(--sheet);border:2px solid var(--ink);padding:20px}
.cov .board-head h3{color:var(--sheet);font-size:1.4rem}
.cov .board-head .mono{color:#9FB0C2}
.cov-scroll{overflow-x:auto}
.cov table{width:100%;min-width:640px;border-collapse:separate;border-spacing:6px 6px;table-layout:fixed}
.cov thead th{font-family:var(--font-mono);font-size:.66rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:#9FB0C2;text-align:left;padding:0 0 2px}
.cov tbody th{font-family:var(--font-display);font-weight:600;font-size:1.12rem;letter-spacing:.04em;text-transform:uppercase;text-align:left;width:180px;white-space:nowrap;padding-right:10px}
.cov thead th:first-child{width:180px}
.cov td{background:#1C2C3D;padding:5px;height:38px}
.cov td i{display:inline-block;width:calc(50% - 2px);height:100%;vertical-align:top}
.cov td i+i{margin-left:4px}
.cov i.g{background:var(--run)}.cov i.a{background:var(--amber)}.cov i.b{background:var(--blue)}
.cov-key{display:flex;flex-wrap:wrap;gap:8px 22px;margin-top:14px;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.05em;text-transform:uppercase;color:#C6D2DE}
.cov-key span{display:inline-flex;align-items:center;gap:8px}
.cov-key i{width:14px;height:14px;display:inline-block}
.cov-key .dn{color:#7F91A4}

.svc.svc3{grid-template-columns:repeat(3,minmax(0,1fr))}
.svc.svc3 article{border-right:1px solid var(--ink);border-bottom:1px solid var(--ink)}
.svc.svc3 article:nth-child(3n){border-right:0}
.svc.svc3 article:nth-last-child(-n+3){border-bottom:0}
@media (max-width:820px){.svc.svc3{grid-template-columns:1fr}.svc.svc3 article{border-right:0 !important;border-bottom:1px solid var(--ink) !important}.svc.svc3 article:last-child{border-bottom:0 !important}}
.main-nav a{white-space:nowrap}
@media (max-width:1320px){.logo .tag{display:none}}

/* ---------- Label legibility: small mono labels larger and darker ---------- */
.mono{font-size:.86rem;font-weight:500;color:var(--ink);letter-spacing:.05em}
.op .num small{font-size:.74rem;color:var(--ink)}
.op h3 small{font-size:.76rem;color:#33414E}
ul.chips li{font-size:.74rem;color:var(--ink)}
.standards span{font-size:.78rem}
.tabs button{font-size:.8rem}
.kpi .d{font-size:.74rem}
.board-note,.calc-out small{font-size:.74rem;color:#9FB0C2}
.m .qty,.m .who{font-size:.78rem;color:#B4C2D0}
.pill{font-size:.68rem}
.eyebrow{font-size:.82rem;color:#C6D2DE}
.block small{font-size:.72rem;color:var(--mist)}
.strip-head{font-size:.74rem;color:#B4C2D0}
.strip li b{font-size:.72rem;color:var(--mist)}
.strip li small{font-size:.72rem;color:#B4C2D0}
.summit .modes span,.page-hero .jump a{font-size:.76rem}
.site-foot h4{font-size:.76rem;color:var(--mist)}
.foot-base{font-size:.76rem;color:var(--mist)}
.logo .tag{font-size:.7rem;color:#B4C2D0}
.demo label{font-size:.78rem;color:var(--ink)}
.cov thead th,.cov-key{font-size:.74rem}
.band .mono,.pillars .mono{color:var(--blue-hi)}
.band > .wrap > .mono{color:#C6D2DE}

.cov thead th.req{width:84px;text-align:center}
.cov td.req{background:none;font-family:var(--font-mono);font-size:.86rem;font-weight:500;color:#fff;text-align:center;border:1px solid #3A4D61;padding:0;width:84px}
.cov table{min-width:720px}

/* ---------- Shift hour-by-hour map ---------- */
.cov.shift table{min-width:860px;border-spacing:4px 4px}
.cov.shift tbody th{width:190px;font-size:1.02rem}
.cov.shift thead th:first-child{width:190px}
.cov.shift tbody th small{font-family:var(--font-mono);font-size:.62rem;font-weight:400;letter-spacing:.06em;color:#9FB0C2;margin-left:6px;text-transform:uppercase}
.cov.shift td{height:30px;padding:0;text-align:center;font-family:var(--font-mono);font-size:.66rem;font-weight:500;letter-spacing:.04em;color:#fff;background:#1C2C3D}
.cov.shift td.p{background:var(--run)}
.cov.shift td.c{background:var(--blue)}
.cov.shift td.b,.cov.shift td.l,.cov.shift td.t{background:#42566C;color:#E3EAF1}
.cov.shift td.o{background:var(--amber);color:var(--ink)}
.cov.shift td.f{background:none;border:1px dashed #51667C;color:#9FB0C2}
.cov.shift td.x{background:none}
.cov.shift tr.met th{color:#9FB0C2;font-size:.92rem;padding-top:8px}
.cov.shift tr.met td{background:none;border-top:2px solid var(--run);color:#5FD3A0;font-size:.8rem}
.cov-key i.k{background:#42566C}