/* Rack-Install — brand theme from the Storage Systems Installation logo:
   green #419A1C, yellow #E9F241, black. Dark sections are a deep green "sheet". */
:root{
  --ink:#153415;        /* deep green sheet */
  --ink-2:#1d451c;      /* raised green panels */
  --line:#e8f1e2;       /* line work on green */
  --paper:#f7f9f5;      /* light sheet, slight green bias */
  --paper-2:#e6ecdf;    /* light grid / rules */
  --text:#121712;
  --muted:#55614f;
  --green:#419a1c;
  --green-ink:#2f7414;
  --yellow:#e9f241;
  --yellow-ink:#d4dc2a;
  --beam:var(--green);  /* beams and accents on light */
  --galv:#9aa693;
  --focus:#e9f241;
  --max:1180px;
  --measure:66ch;
  --head:"Oswald","Barlow Condensed","Arial Narrow",sans-serif;
  --body:"Barlow","Helvetica Neue",Arial,sans-serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;font-family:var(--body);font-size:17px;line-height:1.55;color:var(--text);background:var(--paper);
  background-image:linear-gradient(var(--paper-2) 1px,transparent 1px),linear-gradient(90deg,var(--paper-2) 1px,transparent 1px);
  background-size:48px 48px;}
img,svg{max-width:100%;height:auto;display:block}
a{color:inherit}
:focus-visible{outline:3px solid var(--focus);outline-offset:3px}
.skip{position:absolute;left:-999px;top:8px;background:var(--yellow);color:#111;padding:.5rem 1rem;z-index:100}
.skip:focus{left:8px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
@media(min-width:720px){.wrap{padding:0 32px}}

h1,h2,h3,h4{font-family:var(--head);font-weight:600;line-height:1.02;margin:0 0 .5em;letter-spacing:-.005em}
h1{font-size:clamp(2.6rem,7vw,5.4rem)}
h2{font-size:clamp(1.9rem,4vw,3rem)}
h3{font-size:clamp(1.35rem,2.4vw,1.75rem)}
h4{font-size:1.2rem}
p,li{max-width:var(--measure)}
p{margin:0 0 1rem}
.lede{font-size:1.2rem;color:var(--muted);max-width:56ch}
.small{font-size:.92rem;color:var(--muted)}
hr{border:0;border-top:1px solid var(--galv);margin:2rem 0}

/* header */
.top{background:#fff;color:var(--text);position:sticky;top:env(safe-area-inset-top,0px);z-index:50;border-bottom:3px solid var(--green)}
.top .wrap{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px}
.brand{display:flex;align-items:center;gap:.8rem;text-decoration:none;color:var(--text)}
.brand img{height:46px;width:auto}
.brand b{font-family:var(--head);font-weight:600;font-size:1.45rem;letter-spacing:.01em;line-height:1}
.brand small{display:block;font-family:var(--body);font-weight:500;font-size:.74rem;color:var(--muted);letter-spacing:.02em;max-width:18ch;line-height:1.25}
@media(max-width:560px){.brand small{display:none}}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;gap:1.25rem}
nav.main a{text-decoration:none;white-space:nowrap;font-family:var(--head);font-size:1.12rem;font-weight:500;padding:.4rem 0;border-bottom:2px solid transparent}
nav.main a:hover,nav.main a[aria-current=page]{border-bottom-color:var(--green)}
.navtoggle{display:none;background:none;border:1px solid var(--galv);color:var(--text);font-family:var(--head);font-size:1rem;padding:.4rem .7rem}
@media(max-width:1000px){
  nav.main{display:none;position:absolute;left:0;right:0;top:68px;background:#fff;border-bottom:3px solid var(--green)}
  nav.main.open{display:block}
  nav.main ul{flex-direction:column;gap:0;padding:.5rem 16px 1rem}
  nav.main a{display:block;padding:.7rem 0;border-bottom:1px solid var(--paper-2)}
  .navtoggle{display:inline-block}
}

/* buttons */
.btn{display:inline-block;font-family:var(--head);font-size:1.1rem;font-weight:500;letter-spacing:.02em;text-decoration:none;padding:.75rem 1.3rem;border:2px solid var(--yellow);background:var(--yellow);color:#111;border-radius:2px;cursor:pointer;line-height:1}
.btn:hover{background:var(--yellow-ink);border-color:var(--yellow-ink)}
.btn.ghost{background:transparent;color:inherit;border-color:currentColor}
.btn.ghost:hover{background:rgba(255,255,255,.08)}
.on-light .btn.ghost:hover,.plain .btn.ghost:hover{background:rgba(21,52,21,.06)}
.btn + .btn{margin-left:.6rem}
@media(max-width:480px){.btn{display:block;text-align:center}.btn + .btn{margin:.6rem 0 0}}

/* sections */
section{padding:4rem 0}
@media(min-width:720px){section{padding:5.5rem 0}}
.sheet{--beam:var(--yellow);--beam-ink:var(--yellow-ink);background:var(--ink);color:var(--line);
  background-image:linear-gradient(rgba(223,231,242,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(223,231,242,.07) 1px,transparent 1px);
  background-size:48px 48px}
.sheet .lede,.sheet .small{color:var(--galv)}
.sheet hr{border-top-color:rgba(223,231,242,.25)}
.plain{background:var(--paper)}
.two{display:grid;gap:2.5rem;align-items:start}
.hero .two{align-items:center}
.two>*,.two-col>*,.three>*{min-width:0}
@media(min-width:860px){.two{grid-template-columns:1.05fr 1fr;gap:4rem}.two.rev>*:first-child{order:2}}
.three{display:grid;gap:2rem}
@media(min-width:720px){.three{grid-template-columns:repeat(3,1fr)}}
.two-col{display:grid;gap:2rem}
@media(min-width:720px){.two-col{grid-template-columns:1fr 1fr}}

/* hero */
.hero{padding:3.5rem 0 3rem}
@media(min-width:860px){.hero{padding:5rem 0 4.5rem}}
.hero h1{max-width:12ch;font-size:clamp(2.5rem,6vw,4.6rem)}
.hero .lede{margin:1.2rem 0 1.8rem}
.hero .drawing{margin-top:1rem}
.makers{margin-top:2.5rem;padding-top:1.2rem;border-top:1px solid rgba(223,231,242,.25);color:var(--galv);font-size:1.02rem;max-width:52ch}
.makers b{font-family:var(--head);font-size:1.25rem;color:var(--line);font-weight:500;margin-right:.3rem}

/* drawing frames (SVG) */
.drawing{border:1px solid rgba(223,231,242,.35);padding:4%;position:relative}
.on-light .drawing,.plain .drawing{border-color:var(--galv)}
.drawing svg{width:100%;height:auto}
.drawing figcaption{font-family:var(--head);font-size:.95rem;letter-spacing:.03em;color:var(--galv);margin-top:.6rem;display:flex;justify-content:space-between;gap:1rem}
.d-line{fill:none;stroke:var(--line);stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.d-thin{fill:none;stroke:var(--line);stroke-width:.8;opacity:.75}
.d-dim{fill:none;stroke:var(--galv);stroke-width:.9}
.d-beam{fill:none;stroke:var(--beam);stroke-width:3;stroke-linecap:butt}
.d-fill{fill:rgba(223,231,242,.08);stroke:var(--line);stroke-width:1.2}
.d-text{font-family:var(--head);font-size:9px;fill:var(--galv);letter-spacing:.04em}
.on-light .d-line,.plain .d-line,.on-light .d-thin,.plain .d-thin{stroke:var(--ink)}
.on-light .d-fill,.plain .d-fill{fill:rgba(5,13,27,.05);stroke:var(--ink)}
.on-light .d-text,.plain .d-text{fill:var(--muted)}

/* system grid */
.systems{list-style:none;margin:0;padding:0;display:grid;gap:1px;background:var(--galv);border:1px solid var(--galv)}
@media(min-width:620px){.systems{grid-template-columns:repeat(2,1fr)}}
@media(min-width:980px){.systems{grid-template-columns:repeat(3,1fr)}}
.systems li{background:var(--paper);padding:1.4rem 1.4rem 1.2rem;display:flex;flex-direction:column;gap:.6rem}
.systems li svg{height:72px;width:auto}
.systems h3{margin:0;font-size:1.45rem}
.systems p{margin:0;font-size:.98rem;color:var(--muted)}
.systems a{text-decoration:none;color:var(--text)}
.systems li:hover{background:#fff}

/* facts strip */
.facts{display:grid;gap:1.5rem;list-style:none;margin:0;padding:0}
@media(min-width:720px){.facts{grid-template-columns:repeat(4,1fr)}}
.facts li{border-left:3px solid var(--beam);padding-left:1rem}
.facts b{display:block;font-family:var(--head);font-size:2rem;font-weight:600;line-height:1;margin-bottom:.3rem}
.facts span{color:var(--muted);font-size:.95rem}
.sheet .facts span{color:var(--galv)}

/* steps (a real sequence) */
.steps{list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{position:relative;padding:1.1rem 0 1.1rem 3.4rem;border-top:1px solid var(--galv);counter-increment:s}
.steps li:last-child{border-bottom:1px solid var(--galv)}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:1.05rem;font-family:var(--head);font-size:1.6rem;font-weight:600;color:var(--beam);line-height:1}
.steps h3{margin:0 0 .25rem;font-size:1.4rem}
.steps p{margin:0;color:var(--muted)}

/* definition rows */
.rows{margin:0;padding:0;list-style:none}
.rows li{display:grid;gap:.3rem 2rem;padding:1rem 0;border-top:1px solid var(--galv)}
@media(min-width:720px){.rows li{grid-template-columns:220px 1fr}}
.rows li:last-child{border-bottom:1px solid var(--galv)}
.rows dt,.rows .k{font-family:var(--head);font-size:1.25rem;font-weight:600}
.rows p{margin:0}
.sheet .rows li{border-color:rgba(223,231,242,.25)}

/* checklist */
.ticks{list-style:none;margin:0;padding:0}
.ticks li{padding:.35rem 0 .35rem 1.7rem;position:relative}
.ticks li::before{content:"";position:absolute;left:0;top:.75rem;width:.8rem;height:.45rem;border-left:2.5px solid var(--beam);border-bottom:2.5px solid var(--beam);transform:rotate(-45deg)}

/* callout / quote */
.note{border:1px solid var(--galv);border-left:4px solid var(--green);padding:1.2rem 1.4rem;background:#fff;max-width:70ch}
.sheet .note{background:var(--ink-2);border-color:rgba(223,231,242,.3);border-left-color:var(--beam)}
blockquote{margin:0;font-family:var(--head);font-size:clamp(1.5rem,3vw,2.2rem);font-weight:500;line-height:1.15;max-width:26ch}
blockquote footer{font-family:var(--body);font-size:.95rem;color:var(--galv);margin-top:1rem}

/* forms */
form .f{display:grid;gap:.3rem;margin-bottom:1.1rem}
label{font-family:var(--head);font-size:1.1rem;font-weight:500}
input,select,textarea{font:inherit;padding:.65rem .75rem;border:1px solid var(--galv);background:#fff;border-radius:2px;width:100%;color:var(--text)}
textarea{min-height:140px;resize:vertical}
.f-grid{display:grid;gap:0 1.2rem}
@media(min-width:620px){.f-grid{grid-template-columns:1fr 1fr}}
.hint{font-size:.9rem;color:var(--muted);margin-top:.2rem}

/* breadcrumb */
.crumb{font-size:.92rem;color:var(--galv);margin-bottom:1.2rem}
.crumb a{color:inherit;text-decoration:none}
.crumb a:hover{text-decoration:underline}
.crumb span{margin:0 .4rem}

/* page head */
.pagehead{padding:3rem 0 2.5rem}
.pagehead h1{max-width:16ch}
.pagehead .lede{margin-top:1rem}

/* CTA band */
.cta{padding:3.5rem 0}
.cta .wrap{display:grid;gap:1.5rem;align-items:center}
@media(min-width:860px){.cta .wrap{grid-template-columns:1fr auto}}
.cta h2{margin:0 0 .3rem}
.cta p{margin:0;color:var(--galv)}

/* footer as a drawing title block */
footer.title-block{background:var(--ink);color:var(--line);border-top:4px solid var(--yellow);font-size:.95rem}
.tb{display:grid;border:1px solid rgba(223,231,242,.35);margin:2.5rem 0 1.5rem}
@media(min-width:860px){.tb{grid-template-columns:1.3fr 1fr 1fr 1fr}}
.tb>div{padding:1rem 1.1rem;border-bottom:1px solid rgba(223,231,242,.35)}
@media(min-width:860px){.tb>div{border-bottom:0;border-right:1px solid rgba(223,231,242,.35)}.tb>div:last-child{border-right:0}}
.tb h4{font-family:var(--head);font-size:.85rem;font-weight:500;letter-spacing:.06em;color:var(--galv);margin:0 0 .5rem}
.tb p{margin:0 0 .35rem;font-size:.95rem;max-width:none}
.tb a{color:var(--line);text-decoration:none}
.tb a:hover{text-decoration:underline}
.tb ul{list-style:none;margin:0;padding:0}
.tb li{margin-bottom:.3rem}
.tb .brandrow{display:flex;gap:.8rem;align-items:flex-start}
.tb .brandrow img{height:48px;width:auto;background:#fff;padding:6px 8px;border-radius:2px}
.legal{display:flex;flex-wrap:wrap;gap:.5rem 1.5rem;justify-content:space-between;color:var(--galv);font-size:.85rem;padding-bottom:1.5rem}
.legal p{margin:0;max-width:none}

/* training pending stamp */
.pending{border:2px dashed var(--green);padding:1.2rem 1.4rem;background:#fff;max-width:70ch}
.pending h3{margin-top:0}

/* utilities */
.mt0{margin-top:0}.mt1{margin-top:1rem}.mt2{margin-top:2rem}.mt3{margin-top:3rem}
.mb0{margin-bottom:0}
.flow>*+*{margin-top:1rem}

/* unfilled facts in case studies */
mark.fill{background:var(--yellow);color:#111;padding:0 .3em;border-radius:2px;font-style:italic}

.pagehead h1.long{font-size:clamp(2rem,4.6vw,3.6rem);max-width:24ch}

.sheet .steps p{color:var(--line);opacity:.85}
.sheet .steps li{border-color:rgba(232,241,226,.3)}

nav.main li.lang a{border:1px solid var(--galv);padding:.25rem .55rem;border-radius:2px;font-size:1rem}
nav.main li.lang a:hover{border-color:var(--green)}