:root{
  --bg:#f3f4f6;--surface:#ffffff;--ink:#14181f;--ink-2:#4a5260;--line:#d6dae1;
  --accent:#1d4ed8;--accent-ink:#ffffff;--accent-soft:#e3e9fb;--ok:#15803d;--err:#b91c1c;
  --display:'Barlow Condensed','Arial Narrow',sans-serif;
  --body:'IBM Plex Sans',system-ui,-apple-system,sans-serif;
  --mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#0f1217;--surface:#171b22;--ink:#e8ebf0;--ink-2:#a0a8b6;--line:#2a313c;
  --accent:#6b8ff5;--accent-ink:#0b0e13;--accent-soft:#1b2440;--ok:#4ade80;--err:#f87171;color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#0f1217;--surface:#171b22;--ink:#e8ebf0;--ink-2:#a0a8b6;--line:#2a313c;
  --accent:#6b8ff5;--accent-ink:#0b0e13;--accent-soft:#1b2440;--ok:#4ade80;--err:#f87171;color-scheme:dark}

*{box-sizing:border-box}
[hidden]{display:none!important}
img,svg{max-width:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:10;background:var(--surface)}
h1,h2,h3{font-family:var(--display);font-weight:700;text-transform:uppercase;letter-spacing:.01em;line-height:1;margin:0;text-wrap:balance}
p{margin:0}
a{color:var(--accent)}
.label{font-family:var(--mono);font-size:.74rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2)}
.wrap{max-width:1120px;margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:8px;z-index:50;background:var(--surface);padding:.5rem 1rem}

header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--surface);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding-block:.85rem}
.brand{font-family:var(--display);font-weight:700;font-size:1.45rem;text-transform:uppercase;text-decoration:none;color:var(--ink);letter-spacing:.02em;white-space:nowrap}
.brand small{font-family:var(--mono);font-size:.62rem;color:var(--ink-2);margin-left:.4rem;letter-spacing:.1em}
.nav ul{display:flex;gap:1.4rem;list-style:none;margin:0;padding:0}
.nav ul a{color:var(--ink-2);text-decoration:none;font-size:.9rem;font-weight:500}
.nav ul a:hover,.nav ul a[aria-current=page]{color:var(--ink)}
.menu{display:none;position:relative}
.menu summary{list-style:none;cursor:pointer}
.menu summary::-webkit-details-marker{display:none}
.menu nav{position:absolute;right:0;top:calc(100% + .6rem);background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:.5rem;min-width:15rem;display:flex;flex-direction:column}
.menu nav a{padding:.6rem .75rem;color:var(--ink);text-decoration:none;border-radius:3px}
.menu nav a:hover{background:var(--accent-soft)}
@media (max-width:960px){.nav>nav{display:none}.menu{display:block}.nav>.btn{display:none}}
@media (max-width:420px){.brand{font-size:1.2rem}.brand small{display:none}}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-family:var(--body);font-weight:600;font-size:.95rem;padding:.75rem 1.25rem;border-radius:3px;border:1px solid var(--accent);background:var(--accent);color:var(--accent-ink);text-decoration:none;cursor:pointer;transition:filter .15s}
.btn:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{border-color:var(--ink-2)}
.btn.sm{padding:.5rem .9rem;font-size:.85rem}

.hero{padding-block:clamp(3rem,8vw,5.5rem);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.25fr .9fr;gap:clamp(2rem,5vw,4rem);align-items:center}
.hero-grid>*{min-width:0}
@media (max-width:860px){.hero-grid{grid-template-columns:1fr}}
.hero h1{font-size:clamp(2.6rem,6.5vw,4.6rem);max-width:15ch;margin-top:1rem}
.hero h1 span{color:var(--accent)}
.hero p.lead{margin-top:1.25rem;max-width:54ch;color:var(--ink-2);font-size:1.1rem}
.hero .actions{display:flex;flex-wrap:wrap;gap:.75rem;margin-top:2rem}

.spec{background:var(--surface);border:1px solid var(--line);border-radius:4px}
.spec-head{display:flex;justify-content:space-between;align-items:center;padding:.8rem 1.1rem;border-bottom:1px solid var(--line)}
.spec dl{margin:0;display:grid;grid-template-columns:auto 1fr}
.spec dt,.spec dd{margin:0;padding:.8rem 1.1rem;border-bottom:1px solid var(--line)}
.spec dt{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);padding-top:1rem}
.spec dd{font-weight:500;text-align:right}
.spec dl>*:nth-last-child(-n+2){border-bottom:0}

section{padding-block:clamp(3rem,7vw,5rem);border-bottom:1px solid var(--line)}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;flex-wrap:wrap;gap:1rem 2rem;margin-bottom:2.25rem}
.sec-head h2{font-size:clamp(2rem,4vw,2.8rem);margin-top:.5rem}
.sec-head p{max-width:46ch;color:var(--ink-2)}

.product{display:grid;grid-template-columns:1fr 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:start}
.product>*{min-width:0}
@media (max-width:820px){.product{grid-template-columns:1fr}}
.product p{color:var(--ink-2);max-width:58ch}
.product p+p{margin-top:1rem}
.facts{list-style:none;margin:0;padding:0;border-top:2px solid var(--ink)}
.facts li{display:grid;grid-template-columns:9rem 1fr;gap:1rem;padding:.85rem 0;border-bottom:1px solid var(--line)}
.facts b{font-family:var(--mono);font-weight:500;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);padding-top:.2rem}
@media (max-width:420px){.facts li{grid-template-columns:1fr;gap:.2rem}}

.uses{display:grid;grid-template-columns:repeat(3,1fr);gap:1.25rem;margin-top:clamp(2rem,5vw,3rem)}
.uses.four{grid-template-columns:repeat(4,1fr)}
@media (max-width:960px){.uses.four{grid-template-columns:1fr 1fr}}
@media (max-width:760px){.uses,.uses.four{grid-template-columns:1fr}}
.use{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:1.5rem;display:flex;flex-direction:column;gap:.6rem}
.use h3{font-size:1.35rem}
.use p{color:var(--ink-2);font-size:.95rem}
.use a.more{margin-top:auto;font-weight:600;font-size:.9rem;text-decoration:none}

.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);border-top:2px solid var(--ink)}
@media (max-width:860px){.steps{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.steps{grid-template-columns:1fr}}
.steps li{padding:1.25rem 1.25rem 1.25rem 0;display:flex;flex-direction:column;gap:.5rem}
.steps .n{font-family:var(--mono);color:var(--accent);font-size:.8rem}
.steps h3{font-size:1.3rem}
.steps p{color:var(--ink-2);font-size:.95rem}

/* diagram */
.figure{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:1.25rem;margin:0}
.figure svg{display:block;width:100%;height:auto}
.figure figcaption{margin-top:.75rem;font-size:.85rem;color:var(--ink-2)}
.figure .t{stroke:var(--ink);fill:none;stroke-width:2}
.figure .fill{fill:var(--accent-soft);stroke:var(--accent);stroke-width:2}
.figure .w{fill:var(--accent)}
.figure text{fill:var(--ink-2);font-family:var(--mono);font-size:12px}

/* compare table */
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:4px;background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.95rem}
th,td{text-align:left;padding:.8rem 1rem;border-bottom:1px solid var(--line);vertical-align:top}
thead th{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-2);font-weight:500}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
tbody th{font-weight:600}
td.hl{background:var(--accent-soft)}

/* prose pages */
.page-head{padding-block:clamp(2.5rem,6vw,4rem);border-bottom:1px solid var(--line)}
.crumbs{font-family:var(--mono);font-size:.74rem;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2)}
.crumbs ol{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.4rem}
.crumbs li+li::before{content:"/";margin-right:.4rem}
.crumbs a{color:var(--ink-2);text-decoration:none}
.page-head h1{font-size:clamp(2.4rem,6vw,4rem);margin-top:1rem;max-width:20ch}
.answer{margin-top:1.25rem;max-width:68ch;font-size:1.12rem;color:var(--ink);border-left:3px solid var(--accent);padding-left:1rem}
.updated{margin-top:1rem}
.prose{max-width:72ch}
.prose h2{font-size:clamp(1.7rem,3.5vw,2.3rem);margin:2.5rem 0 1rem}
.prose h2:first-child{margin-top:0}
.prose h3{font-size:1.3rem;margin:1.75rem 0 .6rem}
.prose p,.prose ul,.prose ol{color:var(--ink-2);margin:0 0 1rem}
.prose li{margin-bottom:.4rem}
.prose strong{color:var(--ink)}
.two{display:grid;grid-template-columns:1.6fr 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:start}
.two>*{min-width:0}
@media (max-width:900px){.two{grid-template-columns:1fr}}
.side{position:sticky;top:5rem;display:flex;flex-direction:column;gap:1.25rem}
@media (max-width:900px){.side{position:static}}

/* faq */
.faq{border-top:2px solid var(--ink)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;padding:1rem 2rem 1rem 0;font-weight:600;font-size:1.05rem;list-style:none;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:.25rem;top:.9rem;font-family:var(--mono);color:var(--accent);font-size:1.2rem}
.faq details[open] summary::after{content:"–"}
.faq .a{padding:0 0 1.1rem;color:var(--ink-2);max-width:70ch}
.faq .a p+p{margin-top:.75rem}

.cta{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:clamp(1.5rem,4vw,2.5rem);display:flex;flex-wrap:wrap;gap:1.25rem;align-items:center;justify-content:space-between}
.cta h2{font-size:clamp(1.6rem,3.5vw,2.2rem)}
.cta p{color:var(--ink-2);margin-top:.4rem;max-width:52ch}

/* form */
.inquiry{display:grid;grid-template-columns:1.5fr 1fr;gap:clamp(1.5rem,4vw,3rem);align-items:start}
.inquiry>*{min-width:0}
@media (max-width:900px){.inquiry{grid-template-columns:1fr}}
form{background:var(--surface);border:1px solid var(--line);border-radius:4px;padding:clamp(1.25rem,3vw,2rem);display:grid;grid-template-columns:1fr 1fr;gap:1.1rem}
@media (max-width:560px){form{grid-template-columns:1fr}}
.full{grid-column:1/-1}
.group{grid-column:1/-1;display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;padding:1rem;border:1px dashed var(--line);border-radius:3px}
@media (max-width:700px){.group{grid-template-columns:1fr 1fr}}
.group-title{grid-column:1/-1}
.field{display:flex;flex-direction:column;gap:.35rem;min-width:0}
.field label{font-size:.85rem;font-weight:600}
.opt{font-weight:400;color:var(--ink-2)}
input,select,textarea{font:inherit;font-size:.95rem;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:3px;padding:.65rem .75rem;width:100%}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
textarea{min-height:110px;resize:vertical}
.runs{display:flex;flex-wrap:wrap;gap:.5rem}
.runs input{position:absolute;opacity:0;width:1px;height:1px}
.runs label{border:1px solid var(--line);border-radius:3px;padding:.5rem .85rem;font-size:.9rem;font-weight:500;cursor:pointer;background:var(--bg)}
.runs input:checked+label{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}
.runs input:focus-visible+label{outline:2px solid var(--accent);outline-offset:2px}
fieldset{border:0;margin:0;padding:0;min-width:0}
legend{font-size:.85rem;font-weight:600;padding:0;margin-bottom:.45rem}
.hint{font-size:.8rem;color:var(--ink-2)}
.err{font-size:.8rem;color:var(--err)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem}

.contact{display:flex;flex-direction:column}
.contact>div{padding:1rem 0;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:.2rem}
.contact>div:first-child{padding-top:0}
.contact .v{font-size:1.05rem;font-weight:500;word-break:break-word;font-style:normal}
.email-row{display:flex;align-items:center;flex-wrap:wrap;gap:.6rem}

footer{padding-block:2.5rem;color:var(--ink-2);font-size:.9rem}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:2rem}
@media (max-width:760px){.foot-grid{grid-template-columns:1fr}}
.foot-grid ul{list-style:none;margin:.6rem 0 0;padding:0;display:flex;flex-direction:column;gap:.35rem}
.foot-grid a{color:var(--ink-2);text-decoration:none}
.foot-grid a:hover{color:var(--ink)}
.foot-grid address{font-style:normal;margin-top:.6rem}
.foot-base{margin-top:2rem;padding-top:1.25rem;border-top:1px solid var(--line);display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
input[type=file]{padding:.5rem;font-size:.85rem}
.status{border-top:1px solid var(--line);padding-top:1.1rem;display:flex;flex-direction:column;gap:.4rem}
.status h3{font-size:1.4rem;color:var(--ok)}
.status.bad p{color:var(--err)}
button:disabled{opacity:.6;cursor:wait}
.files{grid-template-columns:1fr}
.file-list{display:flex;flex-direction:column;gap:.6rem}
.file-row{display:flex;gap:.6rem;align-items:center}
.file-row input{flex:1;min-width:0}
#row-1 .remove{visibility:hidden}
.file-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.75rem}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}