:root{
  --ink:#10211a;--steel:#1e4435;--green:#427e67;--moss:#87b6a4;--ice:#e2eee9;
  --paper:#f4f3ed;--line:#c4cfca;--white:#fff;--night:#0d1a15;--sand:#eae7dc;
  --rust:#8a4b28;--amber:#a8781f;--dim:#5a6b63;--volt:#d9ff5a;
  --wrap:1240px;--radius:2px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font:400 15px/1.62 Arial,Helvetica,"Helvetica Neue",sans-serif;
  font-variant-numeric:tabular-nums}
img{max-width:100%;height:auto}
a{color:var(--steel)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 4vw}
.skip{position:absolute;left:-9999px}
.skip:focus{left:8px;top:8px;z-index:99;background:var(--ink);color:#fff;padding:10px 14px}

/* ---------- chrome ---------- */
.network-bar{background:var(--night);color:var(--moss);font:700 9px/1 Arial;letter-spacing:1.1px}
.network-bar .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:31px;flex-wrap:wrap}
.lockup{color:var(--moss);text-decoration:none;display:inline-flex;align-items:baseline;gap:6px}
.lockup strong{color:#fff;letter-spacing:.5px}
.lockup small{font-size:8px;letter-spacing:1.4px;opacity:.8}
.network-bar a{color:var(--moss)}
.network-bar a:hover{color:#fff}
.network-bar span{opacity:.85}

.site-header{background:var(--paper);border-bottom:1px solid #a1c6b7;position:sticky;top:0;z-index:40}
.site-header .wrap{display:flex;align-items:center;gap:22px;min-height:78px;flex-wrap:wrap}
.wordmark{color:var(--ink);text-decoration:none;line-height:.92;margin-right:auto}
.wordmark strong{font-size:21px;letter-spacing:-1.1px}
.wordmark>span{color:var(--green);font-weight:700;font-size:21px;letter-spacing:-1.1px}
.wordmark small{display:block;margin-top:7px;font:700 7px/1 Arial;letter-spacing:1.7px;color:#315c4b}
.site-nav{display:flex;gap:18px;flex-wrap:wrap}
.site-nav a{color:var(--ink);text-decoration:none;font:700 11px/1 Arial;letter-spacing:1.1px;text-transform:uppercase;padding:6px 0;border-bottom:2px solid transparent}
.site-nav a:hover,.site-nav a[aria-current]{border-bottom-color:var(--green);color:var(--steel)}
.header-cta{background:var(--ink);color:#fff!important;text-decoration:none;font:700 11px/1 Arial;letter-spacing:.9px;padding:12px 16px;text-transform:uppercase;white-space:nowrap}
.header-cta:hover{background:var(--steel)}

/* ---------- search ---------- */
.finder{background:var(--night);color:#fff;padding:26px 0}
.finder form{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.finder label{font:700 10px/1 Arial;letter-spacing:1.3px;color:var(--moss);width:100%}
.finder input{flex:1 1 320px;min-width:0;padding:14px 16px;border:1px solid #2b4a3d;background:#132420;color:#fff;font-size:15px;border-radius:var(--radius)}
.finder input::placeholder{color:#6e8f81}
.finder button{padding:14px 22px;border:0;background:var(--moss);color:var(--night);font:700 12px/1 Arial;letter-spacing:1px;cursor:pointer;text-transform:uppercase;border-radius:var(--radius)}
.finder button:hover{background:#fff}
.finder-results{margin-top:14px;display:grid;gap:6px}
.finder-results a{display:flex;justify-content:space-between;gap:14px;background:#132420;border:1px solid #2b4a3d;padding:10px 14px;color:#dff0e8;text-decoration:none;font-size:13px}
.finder-results a:hover{background:#1b332b;border-color:var(--moss)}
.finder-results a span{color:var(--moss);font:700 10px/1.4 Arial;letter-spacing:.6px;white-space:nowrap}
.finder-note{margin:10px 0 0;color:#7ea593;font-size:11.5px}

/* ---------- hero ---------- */
.hero{background:var(--ink);color:#fff;padding:56px 0 46px}
.hero .eyebrow{color:var(--moss)}
.hero h1{font-size:clamp(30px,4.6vw,54px);line-height:1.02;letter-spacing:-1.6px;margin:12px 0 0;max-width:18ch}
.hero h1 em{font-style:normal;color:var(--volt);display:block}
.hero p{max-width:64ch;color:#cfe3da;margin:18px 0 0;font-size:16.5px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:40px;align-items:end}
.hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1px;background:#2b4a3d;border:1px solid #2b4a3d}
.hero-stats div{background:var(--ink);padding:16px 18px}
.hero-stats b{display:block;font-size:25px;letter-spacing:-1px}
.hero-stats span{display:block;font:700 9px/1.35 Arial;letter-spacing:1.2px;color:var(--moss);margin-top:6px;text-transform:uppercase}

.eyebrow{font:700 10px/1 Arial;letter-spacing:1.9px;text-transform:uppercase;color:#356b55;display:block}

/* ---------- page head ---------- */
.crumb{padding:14px 0;font-size:12px;color:var(--dim);border-bottom:1px solid var(--line)}
.crumb ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px}
.crumb li+li:before{content:"/";margin-right:6px;color:var(--line)}
.crumb a{color:var(--steel);text-decoration:none}
.crumb a:hover{text-decoration:underline}

.page-head{padding:40px 0 32px;border-bottom:1px solid var(--line);background:var(--white)}
.page-head h1{font-size:clamp(26px,3.6vw,42px);line-height:1.06;letter-spacing:-1.2px;margin:10px 0 0;max-width:24ch}
.page-head p.lede{max-width:70ch;margin:16px 0 0;font-size:16.5px;color:#33463d}
.page-head-grid{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(0,1fr);gap:36px;align-items:start}
.head-facts{display:grid;gap:1px;background:var(--line);border:1px solid var(--line)}
.head-facts div{background:var(--white);padding:12px 14px;display:flex;justify-content:space-between;gap:12px;align-items:baseline}
.head-facts dt{font:700 9.5px/1.3 Arial;letter-spacing:1.1px;text-transform:uppercase;color:var(--dim)}
.head-facts dd{margin:0;font-weight:700;text-align:right}

/* ---------- sections ---------- */
main{display:block}
section.band{padding:44px 0;border-bottom:1px solid var(--line)}
section.band.alt{background:var(--white)}
section.band.ice{background:var(--ice)}
section.band.dark{background:var(--ink);color:#fff;border-bottom-color:var(--night)}
section.band.dark h2,section.band.dark h3{color:#fff}
section.band.dark p{color:#cfe3da}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.section-head h2{font-size:clamp(20px,2.5vw,29px);letter-spacing:-.8px;margin:8px 0 0;line-height:1.12}
.section-head p{margin:8px 0 0;color:#3c4f47;max-width:74ch}
.section-head a.more{font:700 11px/1 Arial;letter-spacing:1px;text-transform:uppercase;color:var(--steel);text-decoration:none;white-space:nowrap}
.section-head a.more:hover{text-decoration:underline}

/* ---------- stat grid ---------- */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.stats>div{background:var(--white);padding:18px}
.stats b{display:block;font-size:26px;letter-spacing:-1px;line-height:1.1}
.stats span{display:block;font:700 9.5px/1.4 Arial;letter-spacing:1.1px;text-transform:uppercase;color:var(--dim);margin-top:8px}
.stats small{display:block;color:var(--dim);font-size:11.5px;margin-top:6px;line-height:1.45}

/* ---------- cards ---------- */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.cards.two{grid-template-columns:repeat(auto-fill,minmax(380px,1fr))}
.card{background:var(--white);border:1px solid var(--line);padding:18px;display:flex;flex-direction:column;gap:8px}
.card h3{margin:0;font-size:17px;letter-spacing:-.4px;line-height:1.25}
.card h3 a{color:var(--ink);text-decoration:none}
.card h3 a:hover{color:var(--steel);text-decoration:underline}
.card .kicker{font:700 9.5px/1.3 Arial;letter-spacing:1.2px;text-transform:uppercase;color:var(--green)}
.card p{margin:0;font-size:13.5px;color:#3c4f47}
.card dl{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 12px;margin:6px 0 0}
.card dl div{min-width:0}
.card dt{font:700 9px/1.3 Arial;letter-spacing:.9px;text-transform:uppercase;color:var(--dim)}
.card dd{margin:2px 0 0;font-weight:700;font-size:14px}
.card .card-foot{margin-top:auto;padding-top:10px;border-top:1px solid var(--line);font:700 11px/1 Arial;letter-spacing:.8px;text-transform:uppercase}
.card .card-foot a{color:var(--steel);text-decoration:none}
.card .card-foot a:hover{text-decoration:underline}

/* ---------- featured bay layer ---------- */
.bay-card{background:var(--white);border:1px solid var(--ink);border-top:4px solid var(--volt);padding:20px;display:flex;flex-direction:column;gap:10px}
.bay-card .kicker{color:var(--steel)}
.bay-card h3{margin:0;font-size:19px;letter-spacing:-.5px}
.bay-card h3 a{color:var(--ink);text-decoration:none}
.bay-card h3 a:hover{text-decoration:underline}
.bay-card .bay-size{font-size:27px;font-weight:700;letter-spacing:-1px;line-height:1}
.bay-card .bay-size small{display:block;font:700 9px/1.3 Arial;letter-spacing:1.1px;color:var(--dim);text-transform:uppercase;margin-top:5px}
.empty-state{background:var(--white);border:1px dashed var(--line);padding:32px;text-align:left;max-width:70ch}
.empty-state h3{margin:0 0 10px;font-size:19px;letter-spacing:-.5px}
.empty-state p{margin:0 0 12px;color:#3c4f47}
.empty-state a.btn{display:inline-block;background:var(--ink);color:#fff;text-decoration:none;padding:13px 18px;font:700 11px/1 Arial;letter-spacing:1px;text-transform:uppercase;margin-top:6px}
.empty-state a.btn:hover{background:var(--steel)}

/* ---------- tables ---------- */
.table-scroll{overflow-x:auto;border:1px solid var(--line);background:var(--white)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:13.5px}
caption{text-align:left;padding:12px 14px;font:700 10px/1.4 Arial;letter-spacing:1.2px;text-transform:uppercase;color:var(--dim);background:var(--sand);border-bottom:1px solid var(--line)}
th,td{padding:10px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font:700 9.5px/1.3 Arial;letter-spacing:1px;text-transform:uppercase;color:var(--dim);background:var(--ice);white-space:nowrap}
tbody tr:last-child td{border-bottom:0}
tbody tr:nth-child(even){background:#fafaf7}
td.n,th.n{text-align:right;white-space:nowrap}
td a{color:var(--steel);text-decoration:none;font-weight:700}
td a:hover{text-decoration:underline}

/* ---------- bars ---------- */
.bars{display:grid;gap:8px}
.bar{display:grid;grid-template-columns:minmax(120px,1.3fr) minmax(0,3fr) auto;gap:12px;align-items:center;font-size:13px}
.bar i{display:block;height:14px;background:var(--green);border-radius:1px}
.bar em{font-style:normal;font-weight:700;white-space:nowrap}
.bar a{color:var(--ink);text-decoration:none}
.bar a:hover{color:var(--steel);text-decoration:underline}

/* ---------- history chart ---------- */
.spark{width:100%;height:auto;display:block;background:var(--white);border:1px solid var(--line)}
.spark .grid{stroke:#dfe6e2;stroke-width:1}
.spark .line{fill:none;stroke:var(--steel);stroke-width:2.5}
.spark .area{fill:rgba(66,126,103,.13)}
.spark .dot{fill:var(--steel)}
.spark text{font:400 10px Arial;fill:var(--dim)}

/* ---------- section diagram ---------- */
.diagram{width:100%;height:auto;display:block;background:var(--white);border:1px solid var(--line)}
.diagram .struct{fill:none;stroke:var(--ink);stroke-width:2}
.diagram .slab{fill:#dfe6e2;stroke:var(--ink);stroke-width:2}
.diagram .dim{stroke:var(--rust);stroke-width:1.2}
.diagram .dimtext{font:700 10px Arial;fill:var(--rust)}
.diagram .lbl{font:400 11px Arial;fill:var(--dim)}
.diagram .fill{fill:var(--ice)}
.diagram .door{fill:#fff;stroke:var(--ink);stroke-width:2}

/* ---------- notes / boundaries ---------- */
.note{border-left:3px solid var(--green);background:var(--ice);padding:14px 16px;font-size:13px;color:#2b3d35;margin:18px 0 0}
.note b{display:block;font:700 9.5px/1.4 Arial;letter-spacing:1.2px;text-transform:uppercase;color:var(--steel);margin-bottom:6px}
.note p{margin:0 0 8px}
.note p:last-child{margin-bottom:0}
.note.warn{border-left-color:var(--amber);background:#faf4e4}
.note.warn b{color:var(--rust)}
.note.hard{border-left-color:var(--ink);background:var(--sand)}
.note.hard b{color:var(--ink)}

.chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0}
.chip{display:inline-flex;align-items:center;gap:7px;border:1px solid var(--line);background:var(--white);padding:7px 12px;font-size:12.5px;text-decoration:none;color:var(--ink);border-radius:999px}
.chip:hover{border-color:var(--green);color:var(--steel)}
.chip b{font-weight:700;color:var(--green)}

.pills{display:flex;flex-wrap:wrap;gap:6px}
.pill{font:700 9.5px/1 Arial;letter-spacing:.9px;text-transform:uppercase;padding:6px 9px;border:1px solid var(--line);background:var(--ice);color:var(--steel)}
.pill.hot{background:var(--ink);color:var(--volt);border-color:var(--ink)}

/* ---------- prose ---------- */
.prose{max-width:76ch}
.prose h2{font-size:clamp(19px,2.2vw,26px);letter-spacing:-.6px;margin:34px 0 12px;line-height:1.18}
.prose h3{font-size:17px;margin:26px 0 8px;letter-spacing:-.3px}
.prose p{margin:0 0 14px}
.prose ul,.prose ol{margin:0 0 16px;padding-left:22px}
.prose li{margin:0 0 8px}
.prose a{color:var(--steel)}
.prose table{min-width:0}
.prose .table-scroll{margin:0 0 18px}
.faq details{border:1px solid var(--line);background:var(--white);padding:0;margin:0 0 8px}
.faq summary{cursor:pointer;padding:14px 16px;font-weight:700;font-size:15px;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary:before{content:"+";color:var(--green);font-weight:700;margin-right:10px}
.faq details[open] summary:before{content:"–"}
.faq .faq-body{padding:0 16px 14px;color:#3c4f47;font-size:14px}
.faq .faq-body p{margin:0 0 10px}
.faq .faq-body p:last-child{margin:0}

/* ---------- index columns ---------- */
.index-cols{columns:3 230px;column-gap:28px}
.index-cols a{display:block;padding:5px 0;text-decoration:none;color:var(--ink);font-size:13.5px;break-inside:avoid}
.index-cols a:hover{color:var(--steel);text-decoration:underline}
.index-cols a b{color:var(--dim);font-weight:400;font-size:12px}

/* ---------- alpha nav ---------- */
.alpha{display:flex;flex-wrap:wrap;gap:4px;margin:0 0 18px}
.alpha a{display:inline-block;min-width:30px;text-align:center;padding:7px 6px;border:1px solid var(--line);background:var(--white);text-decoration:none;color:var(--ink);font:700 12px/1 Arial}
.alpha a:hover{background:var(--ink);color:#fff}

/* ---------- pagination ---------- */
.pager{display:flex;flex-wrap:wrap;gap:6px;align-items:center;margin:24px 0 0}
.pager a,.pager span{padding:9px 13px;border:1px solid var(--line);background:var(--white);text-decoration:none;color:var(--ink);font:700 12px/1 Arial}
.pager span[aria-current]{background:var(--ink);color:#fff;border-color:var(--ink)}
.pager a:hover{border-color:var(--green);color:var(--steel)}

/* ---------- CTA ---------- */
.cta{background:var(--steel);color:#fff;padding:44px 0}
.cta-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:34px;align-items:center}
.cta h2{margin:10px 0 0;font-size:clamp(22px,2.8vw,32px);letter-spacing:-.8px;line-height:1.12}
.cta .eyebrow{color:var(--moss)}
.cta p{color:#d6e8df;margin:14px 0 0;max-width:62ch}
.cta a.btn{display:inline-block;background:#fff;color:var(--ink);text-decoration:none;padding:15px 22px;font:700 12px/1 Arial;letter-spacing:1px;text-transform:uppercase;margin-top:18px}
.cta a.btn:hover{background:var(--volt)}
.cta a.btn.ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.45);margin-left:8px}
.cta a.btn.ghost:hover{background:rgba(255,255,255,.12)}

/* ---------- tools ---------- */
.tool{background:var(--white);border:1px solid var(--line);padding:22px;margin:0 0 22px}
.tool h3{margin:0 0 6px;font-size:19px;letter-spacing:-.5px}
.tool>p{margin:0 0 16px;color:#3c4f47;font-size:14px;max-width:74ch}
.tool .fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:14px}
.tool label{display:block;font:700 9.5px/1.3 Arial;letter-spacing:1.1px;text-transform:uppercase;color:var(--dim);margin-bottom:6px}
.tool input,.tool select{width:100%;padding:11px 12px;border:1px solid var(--line);background:var(--paper);font-size:15px;font-family:inherit}
.tool output{display:block;margin-top:20px;border-top:2px solid var(--ink);padding-top:16px}
.tool .out-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.tool .out-grid div{background:var(--white);padding:14px}
.tool .out-grid b{display:block;font-size:22px;letter-spacing:-.7px}
.tool .out-grid span{display:block;font:700 9px/1.3 Arial;letter-spacing:1.1px;text-transform:uppercase;color:var(--dim);margin-top:6px}
.tool .out-note{margin:12px 0 0;font-size:12.5px;color:var(--dim)}

/* ---------- footer ---------- */
.site-footer{background:var(--night);color:#b9d3c8;padding:44px 0 22px;font-size:13px}
.footer-top{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:32px}
.footer-top b{display:block;font:700 9.5px/1 Arial;letter-spacing:1.4px;color:#fff;margin-bottom:12px;text-transform:uppercase}
.footer-top a{display:block;color:#b9d3c8;text-decoration:none;padding:3px 0}
.footer-top a:hover{color:#fff;text-decoration:underline}
.footer-mark{color:#fff!important;text-decoration:none!important;font-size:19px;letter-spacing:-.9px;margin:12px 0 8px;display:block}
.footer-mark span{color:var(--moss)}
.footer-top p{color:#8fb0a3;margin:0 0 12px;max-width:44ch}
.footer-compliance{border-top:1px solid #23392f;margin-top:32px;padding-top:18px;color:#7f9d90;font-size:11.5px;line-height:1.6}
.footer-compliance p{margin:0 0 8px;max-width:112ch}
.footer-bottom{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid #23392f;margin-top:14px;padding-top:14px;color:#6d8a7d;font:700 9.5px/1.5 Arial;letter-spacing:1px;text-transform:uppercase}

/* ---------- responsive ---------- */
@media (max-width:900px){
  .hero-grid,.page-head-grid,.cta-grid{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr 1fr}
  .site-header .wrap{min-height:0;padding-top:12px;padding-bottom:12px}
  .site-nav{order:3;width:100%;gap:14px}
  .index-cols{columns:2 180px}
}
@media (max-width:560px){
  .footer-top{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:1fr 1fr}
  .index-cols{columns:1}
  .bar{grid-template-columns:minmax(96px,1.2fr) minmax(0,2fr) auto;font-size:12px}
}
@media print{
  .site-header,.network-bar,.finder,.cta,.site-footer,.pager{display:none}
  body{background:#fff;font-size:11pt}
  section.band{padding:16px 0;break-inside:avoid}
}