/* Storage Unit Costs — design tokens
   Layout: left-aligned reading column (max 44rem) with a sticky "On this page" rail on wide screens.
   Signature elements: the price rule, and floor-plan footprints drawn to scale for each unit size. */
:root{
  --ink:#17252e;        /* headings, logo */
  --text:#283841;
  --muted:#5a6a73;
  --paper:#ffffff;
  --wash:#f1f5f4;       /* quiet section ground */
  --rule:#d4dddb;
  --steel:#0d5960;      /* primary: deep teal for links and actions */
  --steel-dark:#08434a;
  --fair:#0d5960;       /* typical price band */
  --fair-soft:#e0eeec;
  --high:#9a5c12;       /* upper end of the range */
  --high-soft:#f6ebdb;
  --serif:"IBM Plex Serif",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  --radius:4px;
  --wrap:72rem;
  --read:44rem;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:5rem}
body{margin:0;background:var(--paper);color:var(--text);font:400 1.0625rem/1.65 var(--sans);font-variant-numeric:tabular-nums}
img,svg{max-width:100%}
a{color:var(--steel);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{color:var(--steel-dark);text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--steel);outline-offset:2px;border-radius:2px}
h1,h2,h3{font-family:var(--serif);color:var(--ink);line-height:1.2;text-wrap:balance;margin:0}
h1{font-size:clamp(2rem,4.2vw,2.75rem);font-weight:650;letter-spacing:-.01em}
h2{font-size:clamp(1.45rem,2.6vw,1.75rem);font-weight:600;margin-top:2.5rem}
h3{font-size:1.2rem;font-weight:600;margin-top:1.75rem}
p,ul,ol{margin:.85rem 0 0}
ul,ol{padding-left:1.25rem}
li+li{margin-top:.35rem}
strong{color:var(--ink);font-weight:650}
.wrap{max-width:var(--wrap);margin:0 auto;padding-inline:1.25rem}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:.6rem 1rem;z-index:100}
.skip:focus{left:1rem}

/* Header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--rule);backdrop-filter:saturate(1.4) blur(6px)}
.bar{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:4.25rem}
.brand{display:flex;align-items:center;gap:.6rem;text-decoration:none;color:var(--ink)}
.brand:hover{color:var(--ink)}
.brand svg{width:2.1rem;height:2.1rem;flex:none}
.brand-name{font:700 1.3rem/1 var(--serif);letter-spacing:-.01em}
.brand-name span{font-weight:400;color:var(--steel)}
.nav{display:flex;align-items:center;gap:.25rem}
.nav a,.nav button{font:600 .95rem var(--sans);color:var(--ink);text-decoration:none;background:none;border:0;padding:.6rem .8rem;border-radius:var(--radius);cursor:pointer}
.nav a:hover,.nav button:hover{background:var(--wash)}
.has-menu{position:relative}
.has-menu button::after{content:"";display:inline-block;width:.45rem;height:.45rem;margin-left:.45rem;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-.2rem) rotate(45deg);transition:transform .15s}
.has-menu button[aria-expanded="true"]::after{transform:translateY(.05rem) rotate(-135deg)}
.menu{position:absolute;right:0;top:calc(100% + .4rem);width:min(40rem,90vw);background:#fff;border:1px solid var(--rule);border-radius:10px;box-shadow:0 18px 40px -18px rgba(20,38,59,.35);padding:1rem;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.25rem}
.menu[hidden]{display:none}
.menu a{display:block;padding:.7rem .8rem;font-weight:600}
.menu a small{display:block;font-weight:400;color:var(--muted);font-size:.85rem;margin-top:.15rem}
.menu-toggle{display:none;align-items:center;gap:.5rem;font:600 .95rem var(--sans);color:var(--ink);background:var(--wash);border:1px solid var(--rule);border-radius:var(--radius);padding:.55rem .85rem;cursor:pointer}
.menu-toggle .bars{width:1.1rem;height:.8rem;position:relative;display:inline-block}
.menu-toggle .bars i{position:absolute;left:0;right:0;height:2px;background:var(--ink);border-radius:2px;transition:transform .2s,opacity .2s}
.menu-toggle .bars i:nth-child(1){top:0}.menu-toggle .bars i:nth-child(2){top:.35rem}.menu-toggle .bars i:nth-child(3){top:.7rem}
.menu-toggle[aria-expanded="true"] .bars i:nth-child(1){transform:translateY(.35rem) rotate(45deg)}
.menu-toggle[aria-expanded="true"] .bars i:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] .bars i:nth-child(3){transform:translateY(-.35rem) rotate(-45deg)}
.mobile-nav{display:none}

@media (max-width:860px){
  .nav{display:none}
  .menu-toggle{display:inline-flex}
  .mobile-nav{display:block;border-top:1px solid var(--rule);background:#fff;max-height:calc(100vh - 4.25rem);overflow-y:auto}
  .mobile-nav[hidden]{display:none}
  .mobile-nav ul{list-style:none;margin:0;padding:.5rem 1.25rem 1.25rem}
  .mobile-nav li{margin:0;border-bottom:1px solid var(--rule)}
  .mobile-nav li:last-child{border-bottom:0}
  .mobile-nav a,.mobile-nav summary{display:flex;justify-content:space-between;align-items:center;padding:.95rem 0;font-weight:600;color:var(--ink);text-decoration:none;cursor:pointer;list-style:none}
  .mobile-nav summary::-webkit-details-marker{display:none}
  .mobile-nav summary::after{content:"";width:.5rem;height:.5rem;border-right:2px solid var(--steel);border-bottom:2px solid var(--steel);transform:rotate(45deg);transition:transform .15s;margin-right:.3rem}
  .mobile-nav details[open] summary::after{transform:rotate(-135deg)}
  .mobile-nav details ul{padding:0 0 .75rem .9rem}
  .mobile-nav details li{border:0}
  .mobile-nav details a{padding:.55rem 0;font-weight:500;color:var(--steel)}
}

/* Breadcrumbs */
.crumbs{font-size:.875rem;color:var(--muted);padding-top:1.5rem}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:.35rem}
.crumbs li{margin:0}
.crumbs li+li::before{content:"/";margin-right:.35rem;color:var(--rule)}
.crumbs a{color:var(--muted)}

/* Article layout */
.article-grid{display:grid;grid-template-columns:minmax(0,var(--read)) minmax(0,15rem);gap:4rem;justify-content:space-between;padding-bottom:4rem}
.article-grid>article{min-width:0}
.byline{display:flex;flex-wrap:wrap;gap:.25rem 1.25rem;font-size:.9rem;color:var(--muted);margin-top:1rem}
.lede{font-size:1.15rem;color:var(--text);margin-top:1rem}
.toc{position:sticky;top:6rem;align-self:start;font-size:.9rem;border-left:2px solid var(--rule);padding-left:1rem;margin-top:2.25rem}
.toc p{margin:0 0 .5rem;font-weight:700;color:var(--ink)}
.toc ol{list-style:none;padding:0;margin:0}
.toc li{margin:.45rem 0}
.toc a{color:var(--muted);text-decoration:none}
.toc a:hover{color:var(--steel)}
@media (max-width:980px){.article-grid{grid-template-columns:minmax(0,1fr);gap:0}.toc{display:none}}

/* Quick answer + price rule (signature) */
.answer{margin-top:1.75rem;border:1px solid var(--rule);border-radius:10px;padding:1.4rem 1.4rem 1.2rem;background:var(--wash)}
.answer h2{margin:0;font-size:1.1rem;font-family:var(--sans);font-weight:700;color:var(--muted)}
.answer .figure{font:650 clamp(1.9rem,4vw,2.4rem)/1.1 var(--serif);color:var(--ink);margin-top:.35rem}
.answer .figure small{font:400 1rem var(--sans);color:var(--muted);margin-left:.35rem}
.answer>p{margin-top:.6rem}
.rule{position:relative;margin:2.1rem .25rem 2.4rem;height:.9rem}
.rule .track{position:absolute;inset:.3rem 0;background:repeating-linear-gradient(90deg,var(--rule) 0 1px,transparent 1px 10%);border-top:2px solid #b9c6d3}
.rule .band{position:absolute;top:0;bottom:0;background:var(--fair);border-radius:3px}
.rule .tail{position:absolute;top:.25rem;bottom:.25rem;background:var(--high-soft);border:1px solid #e3c9a4;border-radius:2px}
.rule .tail.low{background:#e6edf4;border-color:#c3d0dc}
.rule .tick{position:absolute;top:-1.55rem;transform:translateX(-50%);font-size:.8rem;font-weight:700;color:var(--ink);white-space:nowrap}
.rule .tick.bottom{top:auto;bottom:-1.6rem;font-weight:500;color:var(--muted)}
.rule .tick.start{transform:none}.rule .tick.end{transform:translateX(-100%)}
.legend{display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;font-size:.85rem;color:var(--muted);margin-top:.25rem}
.legend span::before{content:"";display:inline-block;width:.75rem;height:.75rem;border-radius:2px;margin-right:.4rem;vertical-align:-.1rem}
.legend .l1::before{background:#e6edf4;border:1px solid #c3d0dc}.legend .l2::before{background:var(--fair)}.legend .l3::before{background:var(--high-soft);border:1px solid #e3c9a4}

/* Tables */
.table-wrap{overflow-x:auto;margin-top:1.1rem;border:1px solid var(--rule);border-radius:var(--radius)}
table{border-collapse:collapse;width:100%;font-size:.97rem}
caption{text-align:left;padding:.8rem 1rem;font-weight:700;color:var(--ink);background:var(--wash);border-bottom:1px solid var(--rule)}
th,td{padding:.7rem 1rem;border-bottom:1px solid var(--rule);text-align:left;vertical-align:top}
thead th{font-size:.85rem;font-weight:700;color:var(--muted);background:#fff}
tbody tr:last-child td{border-bottom:0}
td.num,th.num{text-align:right;white-space:nowrap}
tbody tr:nth-child(even){background:#fafbfd}

/* Callouts */
.note{border-left:3px solid var(--steel);background:var(--wash);padding:.9rem 1.1rem;margin-top:1.25rem;border-radius:0 var(--radius) var(--radius) 0}
.note p:first-child{margin-top:0}
.tip{border-left-color:var(--fair);background:var(--fair-soft)}
.warn{border-left-color:var(--high);background:var(--high-soft)}
.checklist{list-style:none;padding:0}
.checklist li{padding-left:1.7rem;position:relative}
.checklist li::before{content:"";position:absolute;left:.15rem;top:.45rem;width:.75rem;height:.4rem;border-left:2px solid var(--fair);border-bottom:2px solid var(--fair);transform:rotate(-45deg)}
.compare{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1rem;margin-top:1rem}
.compare>div{border:1px solid var(--rule);border-radius:var(--radius);padding:1rem 1.1rem}
.compare h3{margin-top:0;font-size:1.05rem}
.compare ul{margin-top:.5rem}

/* FAQ */
.faq details{border-bottom:1px solid var(--rule)}
.faq details:first-of-type{border-top:1px solid var(--rule);margin-top:1rem}
.faq summary{cursor:pointer;padding:1rem 2rem 1rem 0;font-weight:650;color:var(--ink);position:relative;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:.25rem;top:.85rem;font-size:1.35rem;color:var(--steel);font-weight:400}
.faq details[open] summary::after{content:"\2212"}
.faq details>div{padding-bottom:1rem}
.faq details>div p:first-child{margin-top:0}

/* Related + sources */
.related{margin-top:2.5rem;padding-top:1.5rem;border-top:1px solid var(--rule)}
.related ul{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:.25rem 1.5rem}
.related a{display:block;padding:.45rem 0;font-weight:600}
.sources{font-size:.9rem;color:var(--muted);margin-top:2rem}
.sources h2{font-size:1.05rem;font-family:var(--sans);font-weight:700;margin-top:0;color:var(--muted)}
.sources ul{padding-left:1.1rem}
.disclaimer-line{font-size:.85rem;color:var(--muted);margin-top:1.5rem;padding-top:1rem;border-top:1px dashed var(--rule)}

/* Hub + home */
.hero{padding:3.25rem 0 2.5rem;border-bottom:1px solid var(--rule)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);gap:3rem;align-items:center}
.hero p.lede{max-width:36rem}
.hero .actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:1.5rem}
.btn{display:inline-block;background:var(--steel);color:#fff;font-weight:650;text-decoration:none;padding:.8rem 1.2rem;border-radius:var(--radius)}
.btn:hover{background:var(--steel-dark);color:#fff;text-decoration:none}
.btn.ghost{background:transparent;color:var(--steel);border:1px solid var(--rule)}
.btn.ghost:hover{background:var(--wash);color:var(--steel-dark)}
.sample{border:1px solid var(--rule);border-radius:10px;padding:1.25rem 1.4rem 1rem;background:#fff;box-shadow:0 20px 40px -30px rgba(20,38,59,.45)}
.sample h2{margin:0;font-size:1rem;font-family:var(--sans);color:var(--muted);font-weight:600}
.sample .row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.5rem 1rem;padding:.75rem 0;border-bottom:1px solid var(--rule);align-items:baseline}
.sample .row:last-of-type{border-bottom:0}
.sample .row a{font-weight:600;color:var(--ink);text-decoration:none}
.sample .row a:hover{color:var(--steel);text-decoration:underline}
.sample .row b{font-weight:650;color:var(--fair);white-space:nowrap}
.trust{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:2rem;padding:2.5rem 0}
.trust h3{margin-top:0;font-size:1.1rem}
.trust p{font-size:.97rem;color:var(--muted);margin-top:.4rem}
.section{padding:2.75rem 0}
.section.wash{background:var(--wash);border-block:1px solid var(--rule)}
.section h2{margin-top:0}
.hub-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(19rem,1fr));gap:1rem;margin-top:1.5rem}
.hub{background:#fff;border:1px solid var(--rule);border-radius:10px;padding:1.25rem 1.3rem;display:flex;flex-direction:column;gap:.35rem}
.hub h3{margin:0;font-size:1.2rem}
.hub h3 a{color:var(--ink);text-decoration:none}
.hub h3 a:hover{color:var(--steel);text-decoration:underline}
.hub p{margin:0;color:var(--muted);font-size:.95rem}
.hub ul{list-style:none;padding:0;margin:.5rem 0 0;font-size:.95rem}
.hub li{margin:.3rem 0}
.guide-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(18rem,1fr));gap:0 2rem;margin-top:1rem;list-style:none;padding:0}
.guide-list li{border-bottom:1px solid var(--rule);margin:0}
.guide-list a{display:flex;justify-content:space-between;gap:1rem;padding:.85rem 0;text-decoration:none;font-weight:600;color:var(--ink)}
.guide-list a:hover{color:var(--steel)}
.guide-list a span{font-weight:500;color:var(--fair);white-space:nowrap}
.page-plain{max-width:var(--read);padding-bottom:4rem}
.page-plain h1{margin-top:1rem}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr;gap:2rem}.trust{grid-template-columns:1fr;gap:1.25rem}}

/* Footer */
.site-footer{background:var(--ink);color:#c9d4df;margin-top:2rem;padding:3rem 0 1.5rem;font-size:.93rem}
.site-footer a{color:#fff;text-decoration:none}
.site-footer a:hover{text-decoration:underline}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:2rem}
.foot-grid h2{font:700 .95rem var(--sans);color:#fff;margin:0 0 .75rem}
.foot-grid ul{list-style:none;padding:0;margin:0}
.foot-grid li{margin:.45rem 0}
.foot-brand .brand{color:#fff}
.foot-brand .brand-name span{color:#9fc2e3}
.foot-brand p{max-width:22rem;margin-top:.9rem}
.foot-base{border-top:1px solid rgba(255,255,255,.15);margin-top:2.5rem;padding-top:1.25rem;display:flex;flex-wrap:wrap;justify-content:space-between;gap:.75rem;font-size:.85rem}
@media (max-width:860px){.foot-grid{grid-template-columns:1fr 1fr}.foot-brand{grid-column:1/-1}}

/* Cookie notice */
.cookie{position:fixed;left:1rem;right:1rem;bottom:1rem;z-index:60;max-width:40rem;margin:0 auto;background:#fff;border:1px solid var(--rule);border-radius:10px;box-shadow:0 18px 40px -16px rgba(20,38,59,.45);padding:1rem 1.1rem;display:flex;flex-wrap:wrap;align-items:center;gap:.75rem 1rem;font-size:.92rem}
.cookie[hidden]{display:none}
.cookie p{margin:0;flex:1 1 18rem}
.cookie button{font:650 .92rem var(--sans);border-radius:var(--radius);padding:.6rem 1rem;cursor:pointer;border:1px solid var(--steel);background:var(--steel);color:#fff}
.cookie button.secondary{background:#fff;color:var(--steel)}

@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
@media print{.site-header,.site-footer,.toc,.cookie{display:none}}

/* Footprints: unit sizes drawn to scale (1 ft = --ft) */
.footprints{display:flex;flex-wrap:wrap;align-items:flex-end;gap:1.1rem 1.4rem;margin-top:1.25rem;--ft:4.2px}
.fp{display:flex;flex-direction:column;gap:.4rem;text-decoration:none;color:var(--ink)}
.fp .box{border:2px solid var(--ink);background:repeating-linear-gradient(0deg,transparent 0 calc(var(--ft)*5 - 1px),rgba(23,37,46,.12) calc(var(--ft)*5 - 1px) calc(var(--ft)*5)),repeating-linear-gradient(90deg,transparent 0 calc(var(--ft)*5 - 1px),rgba(23,37,46,.12) calc(var(--ft)*5 - 1px) calc(var(--ft)*5)),#fff;position:relative}
.fp .box::after{content:"";position:absolute;left:18%;right:18%;bottom:-2px;height:3px;background:var(--steel)}
.fp b{font:600 .95rem var(--sans)}
.fp small{color:var(--muted);font-size:.85rem}
.fp:hover b{color:var(--steel);text-decoration:underline}
.fp-legend{font-size:.85rem;color:var(--muted);margin-top:.75rem}
.size-hero{display:flex;gap:1.25rem;align-items:flex-end;margin-top:1.25rem;flex-wrap:wrap}
.size-hero .fp .box{--ft:9px}
@media (max-width:520px){.footprints{--ft:3.2px}}