:root{padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}[hidden]{display:none!important}@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-400-italic.woff2') format('woff2');font-weight:400;font-style:italic;font-display:swap}@font-face{font-family:'IBM Plex Sans';src:url('fonts/ibm-plex-sans-latin-600-normal.woff2') format('woff2');font-weight:600;font-style:normal;font-display:swap}@font-face{font-family:'Libre Baskerville';src:url('fonts/libre-baskerville-latin-400-normal.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}@font-face{font-family:'Libre Baskerville';src:url('fonts/libre-baskerville-latin-400-italic.woff2') format('woff2');font-weight:400;font-style:italic;font-display:swap}
:root{
  --bg:#0E1A26; --bg-deep:#0B1621; --surface:#15283A; --surface2:#1A2D40; --line:#24394C; --line2:#2E465A;
  --head:#F4F8F8; --fg:#EEF3F4; --text:#DCE7EA; --muted:#B4C8CF; --label:#A9C1C9; --faint:#8EA4B0;
  --glass:#7CCFDD; --glass-ink:#0B1621; --glass-fill:rgba(124,207,221,.15);
  --edge:#E0B656; --edge-soft:rgba(224,182,86,.30); --crack:#E39A5B; --beam:#F27C8C; --plate:#F2F5F4;
  --radius:14px;
  --chip:#2B4258; --fiber:#F0CF8E; --coat:#8394A1; --weld:#F08A5D;
  --s1:#2A9DB6; --s2:#C08524; --s3:#DB5A77;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:84px;background:var(--bg)}
body{margin:0;background:var(--bg);color:var(--fg);font:400 17px/1.6 "IBM Plex Sans",-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);background:var(--bg-deep);z-index:30}
img{max-width:100%;height:auto;display:block}
a{color:var(--glass);text-underline-offset:3px;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
h1,h2,h3{font-family:"Libre Baskerville",Georgia,"Times New Roman",serif;font-weight:400;letter-spacing:-.01em;text-wrap:balance;margin:0;color:var(--head)}
h1{font-size:clamp(2.1rem,4.8vw,3.6rem);line-height:1.1}
h2{font-size:clamp(1.55rem,3vw,2.25rem);line-height:1.18}
h3{font-family:"IBM Plex Sans",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-weight:600;font-size:1.08rem;line-height:1.35;letter-spacing:0}
p{margin:0}
sup{font-size:.68em;line-height:0;color:var(--faint);margin-left:1px}
.wrap{max-width:1180px;margin-inline:auto;
  padding-left:max(clamp(16px,4vw,40px),env(safe-area-inset-left,0px));
  padding-right:max(clamp(16px,4vw,40px),env(safe-area-inset-right,0px))}
.eyebrow{font-family:"IBM Plex Sans",-apple-system,"Segoe UI",Roboto,Arial,sans-serif;font-size:.76rem;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  color:var(--glass);display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.lede{font-size:clamp(1.04rem,1.6vw,1.2rem);color:var(--text);max-width:60ch}
.note,.hint{font-size:.88rem;color:var(--faint);max-width:80ch}
.prose{display:flex;flex-direction:column;gap:16px;min-width:0}
.prose p{max-width:64ch;color:var(--muted)}
.prose-w{max-width:78ch;color:var(--muted)}

/* header */
.site-head{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:rgba(11,22,33,.86);
  backdrop-filter:saturate(1.2) blur(12px);-webkit-backdrop-filter:saturate(1.2) blur(12px);border-bottom:1px solid var(--line)}
.head-row{display:flex;align-items:center;gap:20px;min-height:64px}
.brand{display:flex;align-items:baseline;gap:8px;text-decoration:none;color:var(--head);white-space:nowrap}
.brand-mark{font-family:"Libre Baskerville",Georgia,serif;font-size:1.42rem;letter-spacing:.01em}
.brand-mark sup{color:var(--glass);font-size:.5em;vertical-align:.9em;margin-left:1px}
.brand-by{font-size:.82rem;color:var(--label);letter-spacing:.04em}
.nav{display:flex;gap:2px;margin-left:auto;overflow-x:auto;scrollbar-width:none;min-width:0}
.nav::-webkit-scrollbar{display:none}
.nav a{color:var(--label);text-decoration:none;font-size:.92rem;padding:8px 12px;white-space:nowrap;position:relative}
.nav a:hover{color:var(--head)}
.nav a[aria-current="page"]{color:var(--head)}
.nav a[aria-current="page"]::after{content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;background:var(--glass)}
@media (max-width:860px){
  .head-row{flex-wrap:wrap;gap:0 12px;padding-top:8px}
  .nav{order:3;width:100%;margin:0;padding-bottom:4px;-webkit-mask-image:linear-gradient(90deg,#000 94%,transparent);mask-image:linear-gradient(90deg,#000 94%,transparent)}
  .nav a{padding:8px 5px;font-size:.82rem}
  .nav a:first-child{padding-left:0}
  .nav a[aria-current="page"]::after{left:5px;right:5px}
  .nav a:first-child[aria-current="page"]::after{left:0}
}

/* pages + blocks */
main{display:block}
.page{padding-bottom:24px}
.page-head{padding-block:clamp(52px,8vw,100px) clamp(28px,4vw,48px);display:flex;flex-direction:column;gap:20px}
.block{padding-block:clamp(36px,5vw,64px);display:flex;flex-direction:column;gap:22px;border-top:1px solid var(--line)}
.page-head + .block{border-top:0}
.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,4vw,56px);align-items:center}
.split-top{align-items:start}
@media (max-width:860px){.split{grid-template-columns:minmax(0,1fr)}}
.cols3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.cols3 > div{display:flex;flex-direction:column;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.cols3 h3{color:var(--glass)}
.cols3 p{color:var(--muted)}
@media (max-width:860px){.cols3{grid-template-columns:minmax(0,1fr)}}

/* cards, as on the deck's content slides */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(20px,2.6vw,30px);
  display:flex;flex-direction:column;gap:12px;min-width:0;position:relative}
.card p{color:var(--muted)}
.card h3{color:var(--glass)}
.card ul{margin:0;padding-left:1.1em;color:var(--muted);display:flex;flex-direction:column;gap:8px}
.card ul li::marker{color:var(--glass)}
.for{font-size:.95rem;margin-top:4px}

/* hero: the deck cover, as a web band */
.hero{position:relative;overflow:hidden;background:var(--bg-deep);border-bottom:1px solid var(--line)}
.hero-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:70% 50%;max-width:none}
.hero::after{content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(11,22,33,.97) 0%,rgba(11,22,33,.9) 40%,rgba(11,22,33,.35) 72%,rgba(11,22,33,.1) 100%)}
.hero-inner{position:relative;z-index:1;min-height:clamp(540px,80vh,780px);display:flex;flex-direction:column;justify-content:center;gap:24px;
  padding-block:clamp(64px,9vw,120px)}
.hero-copy{display:flex;flex-direction:column;gap:24px;max-width:640px;min-width:0}
.hero-mark{font-family:"Libre Baskerville",Georgia,serif;font-size:clamp(4rem,11vw,8.6rem);line-height:1;color:var(--head);letter-spacing:-.01em}
.hero-mark sup{font-size:.22em;color:var(--glass);vertical-align:2.6em;margin-left:4px}
.hero h1{font-size:clamp(1.55rem,3.2vw,2.35rem);line-height:1.25;max-width:22ch}
.hero .lede{color:var(--text)}
.hero-meta{font-size:1rem;color:var(--label)}
.hero-cap{position:absolute;z-index:1;right:max(clamp(16px,4vw,40px),env(safe-area-inset-right,0px));bottom:18px;font-size:.8rem;color:rgba(238,243,244,.7)}
@media (max-width:760px){
  .hero::after{background:linear-gradient(180deg,rgba(11,22,33,.55) 0%,rgba(11,22,33,.86) 42%,rgba(11,22,33,.97) 70%)}
  .hero-bg{object-position:80% 30%}
  .hero-cap{display:none}
}
.actions{display:flex;flex-wrap:wrap;gap:12px}
.btn{display:inline-flex;align-items:center;min-height:48px;padding:0 24px;font-weight:600;font-size:.98rem;text-decoration:none;border-radius:12px}
.btn-primary{background:var(--glass);color:var(--glass-ink)}
.btn-primary:hover{filter:brightness(1.08);text-decoration:none}
.btn-ghost{color:var(--text);background:var(--surface2);border:1px solid var(--line2)}
.btn-ghost:hover{border-color:var(--label);text-decoration:none}

/* proof strip */
.proof{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;padding-block:clamp(28px,4vw,44px)}
.proof-item{display:flex;flex-direction:column;gap:8px;padding:22px;min-width:0;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.proof .num{font-family:"Libre Baskerville",Georgia,serif;font-size:clamp(1.5rem,2.6vw,2rem);color:var(--head);line-height:1.15}
.proof .num::after{content:"";display:block;width:28px;height:2px;border-radius:2px;background:var(--glass);margin-top:12px}
.proof span:last-child{font-size:.9rem;color:var(--muted)}
@media (max-width:860px){.proof{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:420px){.proof{grid-template-columns:minmax(0,1fr)}}

/* business units */
.bu-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:860px){.bu-grid{grid-template-columns:minmax(0,1fr)}}
.bu{text-decoration:none;color:inherit;transition:transform .18s ease,border-color .18s ease}
.bu:hover{transform:translateY(-2px);border-color:var(--line2);text-decoration:none}
.bu-icon{width:46px;height:46px}
.bu-sub{font-size:.78rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)!important;margin-top:-6px}
.bu h3{font-family:"Libre Baskerville",Georgia,serif;font-weight:400;font-size:1.34rem;color:var(--head)}
.more{margin-top:auto;padding-top:6px;color:var(--glass);font-weight:600;font-size:.95rem}
.chip{display:inline-flex;align-items:center;gap:7px;font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;padding:5px 11px;
  border:1px solid currentColor;border-radius:999px;width:max-content;max-width:100%}
.chip::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.chip-eval{color:var(--glass)} .chip-dev{color:#A8D8C0} .chip-feas{color:var(--label)}

/* steps */
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;counter-reset:st}
.steps-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.steps li{counter-increment:st;display:flex;flex-direction:column;gap:8px;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-width:0}
.steps li::before{content:counter(st);font-family:"Libre Baskerville",Georgia,serif;font-size:2.2rem;line-height:1;color:var(--glass)}
.steps h3{color:var(--head)}
.steps p{color:var(--muted);font-size:.96rem}
@media (max-width:860px){.steps,.steps-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.steps,.steps-3{grid-template-columns:minmax(0,1fr)}}

/* lists, tables */
.facts{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px}
.facts li{position:relative;padding-left:22px;color:var(--muted);max-width:68ch}
.facts li::before{content:"";position:absolute;left:3px;top:.62em;width:7px;height:7px;border-radius:50%;background:var(--glass)}
.facts.cols2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 40px}
@media (max-width:700px){.facts.cols2{grid-template-columns:minmax(0,1fr)}}
.tbl-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
table{border-collapse:collapse;width:100%;min-width:560px;font-size:.95rem}
th,td{text-align:left;vertical-align:top;padding:13px 18px;border-bottom:1px solid var(--line)}
th{font-size:.74rem;letter-spacing:.12em;text-transform:uppercase;color:var(--label);font-weight:600;background:var(--surface2)}
td{color:var(--muted)} td:first-child{color:var(--text)}
tbody tr:last-child td{border-bottom:0}
.num-table td:nth-child(2){font-variant-numeric:tabular-nums;color:var(--head);white-space:nowrap}
@media (max-width:700px){.num-table td:nth-child(2){white-space:normal}}
.tag{display:inline-block;font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:3px 9px;margin-right:6px;
  border:1px solid var(--line2);border-radius:999px;color:var(--faint)}
.tag-edge{border-color:var(--glass);color:var(--glass-ink);background:var(--glass)}
dl.pairs{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:12px 22px;margin:0}
dl.pairs dt{font-weight:600;color:var(--glass)} dl.pairs dd{margin:0;color:var(--muted)}
@media (max-width:480px){dl.pairs{grid-template-columns:minmax(0,1fr);gap:4px}dl.pairs dd{margin-bottom:10px}}

/* figures */
figure{margin:0;min-width:0}
figcaption{font-size:.86rem;color:var(--faint);margin-top:10px;max-width:72ch}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(14px,2vw,24px);overflow-x:auto}
.panel.wide .diagram{min-width:640px}
.diagram{width:100%;height:auto;display:block}
.zoom-btn{display:block;width:100%;padding:0;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:#000;cursor:zoom-in;position:relative}
.zoom-btn img{width:100%;height:auto}
.zoom-btn::after{content:"";position:absolute;right:10px;bottom:10px;width:30px;height:30px;border-radius:8px;background:rgba(11,22,33,.78)
  url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23EEF3F4' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M15 3h6v6M9 21H3v-6M21 3l-7 7M3 21l7-7'/%3E%3C/svg%3E") center/16px no-repeat;
  opacity:0;transition:opacity .15s}
.zoom-btn:hover::after,.zoom-btn:focus-visible::after{opacity:1}
.plate .zoom-btn{background:var(--plate);padding:12px}
.gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px 20px;align-items:start}
.gallery > .zoom{grid-column:span 2}
.gallery-4 > .zoom{grid-column:span 1}
@media (max-width:860px){.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.gallery > .zoom{grid-column:span 2}.gallery-4 > .zoom{grid-column:span 1}}
@media (max-width:480px){.gallery-4 > .zoom{grid-column:span 2}}
.sketches{display:flex;flex-direction:column;gap:18px;min-width:0}
.sketch-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
:focus-visible{outline:2px solid var(--glass);outline-offset:2px}

/* calculator */
.calc{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:28px 40px}
@media (max-width:760px){.calc{grid-template-columns:minmax(0,1fr)}}
.calc-controls{display:flex;flex-direction:column;gap:10px}
.calc-controls label{display:flex;justify-content:space-between;gap:12px;font-size:.92rem;color:var(--muted);margin-top:8px}
.calc-controls output{color:var(--head);font-variant-numeric:tabular-nums;font-weight:600}
input[type=range]{width:100%;accent-color:var(--glass);height:28px}
.calc-result{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.calc-big{font-family:"Libre Baskerville",Georgia,serif;font-size:clamp(1.6rem,3vw,2.3rem);color:var(--head)!important;line-height:1.1}
.calc-big span{color:var(--glass)}
.calc-detail b{color:var(--head);font-variant-numeric:tabular-nums}
#calc-svg{width:min(220px,100%);height:auto}
.calc-legend{font-size:.82rem;color:var(--faint)!important;display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px}
.key{display:inline-block;width:14px;height:10px}
.key-band{background:var(--edge-soft);border:1px solid var(--edge)}
.key-line{border-top:2px dashed var(--edge);height:0}
.calc-note{grid-column:1/-1}

/* science */
.pubs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px}
@media (max-width:860px){.pubs{grid-template-columns:minmax(0,1fr)}}
.pub-meta{font-size:.76rem;letter-spacing:.12em;text-transform:uppercase;color:var(--glass)!important;font-weight:600}
.pub h3{font-family:"Libre Baskerville",Georgia,serif;font-weight:400;font-size:1.12rem;line-height:1.42;color:var(--head)}
.pub-auth{font-size:.92rem;color:var(--text)!important}
.doi{font-size:.9rem;margin-top:auto;word-break:break-all}
.formula{font-family:"Libre Baskerville",Georgia,serif;font-size:clamp(1.5rem,3vw,2.1rem);color:var(--head)!important;padding:14px 0;border-block:1px solid var(--line);width:max-content;max-width:100%}

/* company */
.name-quote{margin:0;font-family:"Libre Baskerville",Georgia,serif;font-style:italic;font-size:clamp(1.08rem,1.8vw,1.3rem);line-height:1.6;
  color:var(--head);border-left:2px solid var(--glass);padding-left:22px;max-width:56ch}
.models{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.models > div{display:flex;flex-direction:column;gap:8px;padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius)}
.models h3{color:var(--glass)}
.models p{color:var(--muted);font-size:.96rem}
@media (max-width:860px){.models{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:480px){.models{grid-template-columns:minmax(0,1fr)}}
.contacts{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:20px}
.contacts > .contact{grid-column:span 2}
.contacts > .contact-wide{grid-column:span 3}
@media (max-width:960px){.contacts{grid-template-columns:repeat(2,minmax(0,1fr))}.contacts > .contact,.contacts > .contact-wide{grid-column:span 1}}
@media (max-width:620px){.contacts{grid-template-columns:minmax(0,1fr)}}
.contact-role{font-size:.74rem;letter-spacing:.14em;text-transform:uppercase;color:var(--label)!important;font-weight:600}
.contact h3{font-family:"Libre Baskerville",Georgia,serif;font-weight:400;font-size:1.25rem;color:var(--head)}
.org{font-weight:600;color:var(--glass)!important;font-size:1rem}
.email{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;padding-top:6px}
.addr{font-family:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;font-size:.9rem;color:var(--head);user-select:all;word-break:break-all}
.copy{font:600 .76rem/1 "IBM Plex Sans",Arial,sans-serif;letter-spacing:.06em;text-transform:uppercase;padding:8px 12px;cursor:pointer;border-radius:8px;
  color:var(--glass);background:transparent;border:1px solid var(--line2)}
.copy:hover{border-color:var(--glass)}
.address{font-size:.9rem;color:var(--faint)}

/* sources, pager, footer */
.sources{padding-block:28px 8px;border-top:1px solid var(--line)}
.sources ol{margin:10px 0 0;padding-left:1.4em;display:flex;flex-direction:column;gap:6px;font-size:.86rem;color:var(--faint)}
.sources a{color:var(--muted);word-break:break-word}
.pager{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-block:28px 8px}
.pager a{display:flex;flex-direction:column;gap:2px;text-decoration:none;padding:16px 20px;border:1px solid var(--line);border-radius:var(--radius);min-width:0;flex:1 1 220px;background:var(--surface)}
.pager a:hover{border-color:var(--line2)}
.pager .next{text-align:right;margin-left:auto}
.pager a:only-child{flex:0 1 50%}
.pager small{font-size:.72rem;letter-spacing:.14em;text-transform:uppercase;color:var(--faint)}
.pager span{font-family:"Libre Baskerville",Georgia,serif;color:var(--head)}
.site-foot{margin-top:40px;border-top:1px solid var(--line);background:var(--bg-deep)}
.foot-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,1fr);gap:24px 48px;padding-block:40px calc(40px + env(safe-area-inset-bottom,0px))}
@media (max-width:760px){.foot-grid{grid-template-columns:minmax(0,1fr)}}
.site-foot p{font-size:.86rem;color:var(--faint)}
.site-foot b{color:var(--muted);font-weight:600}
.foot-brand{font-family:"Libre Baskerville",Georgia,serif;font-size:1.2rem;color:var(--head)!important;margin-bottom:8px}
.foot-meta{display:flex;flex-direction:column;gap:6px}
.doc-code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:.78rem!important}

/* lightbox */
.lb{position:fixed;inset:0;z-index:50;background:rgba(6,12,18,.95);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  padding:calc(56px + env(safe-area-inset-top,0px)) max(16px,env(safe-area-inset-right,0px)) calc(20px + env(safe-area-inset-bottom,0px)) max(16px,env(safe-area-inset-left,0px))}
.lb img{max-width:min(1400px,100%);max-height:calc(100% - 90px);object-fit:contain}
.lb p{color:var(--muted);font-size:.92rem;max-width:90ch;text-align:center}
.lb-close{position:absolute;top:calc(12px + env(safe-area-inset-top,0px));right:max(12px,env(safe-area-inset-right,0px));width:42px;height:42px;border-radius:10px;
  border:1px solid var(--line2);background:var(--bg-deep);color:var(--fg);font-size:22px;line-height:1;cursor:pointer}

/* SVG diagram classes (amber = laser-formed edge, as in the deck sketches) */
.stop-fade0{stop-color:var(--glass);stop-opacity:0}.stop-fade1{stop-color:var(--glass);stop-opacity:.24}
.s-text{fill:var(--muted);font:500 15px "IBM Plex Sans",Arial,sans-serif}
.s-strong{fill:var(--head);font-weight:600}
.s-small{fill:var(--faint);font:400 12.5px "IBM Plex Sans",Arial,sans-serif}
.s-step{fill:var(--glass);font:400 22px "Libre Baskerville",Georgia,serif}
.s-outline{stroke:var(--glass);stroke-width:2;fill:none}
.s-edge{stroke:var(--edge);stroke-width:4;stroke-linecap:round;fill:none}
.s-edge-thin{stroke:var(--edge);stroke-width:2;fill:none}
.s-edge-dash{stroke:var(--edge);stroke-width:1.5;stroke-dasharray:4 3;fill:none}
.s-edge-text{fill:var(--edge)}
.s-crack{stroke:var(--crack);stroke-width:2;stroke-linecap:round}
.s-top{fill:var(--glass-fill);stroke:var(--glass);stroke-width:1.5}
.s-side{fill:var(--glass);opacity:.35}
.s-side-fill{fill:var(--glass);opacity:.25}
.s-hole{fill:var(--surface)}
.s-leader{stroke:var(--muted);stroke-width:1}
.s-mag{fill:none;stroke:var(--head);stroke-width:2}
.s-mag-handle{stroke:var(--head);stroke-width:4;stroke-linecap:round}
.s-dash{stroke:var(--faint);stroke-width:1;stroke-dasharray:4 4}
.s-box{fill:var(--surface2);stroke:var(--line2);stroke-width:1}
.s-arrowhead{fill:var(--glass)}
.s-glassbody{fill:var(--glass-fill);stroke:var(--glass);stroke-width:1.5}
.s-waste{fill:none;stroke:var(--faint);stroke-width:1.2;stroke-dasharray:5 4}
.s-beam{stroke:var(--beam);stroke-width:2.5;stroke-dasharray:6 4}
.s-beamhead{fill:var(--beam)}
.i-glass{fill:var(--glass-fill);stroke:var(--glass);stroke-width:1.5}
.i-hole{fill:var(--surface);stroke:var(--glass);stroke-width:1}
.i-edge{stroke:var(--edge);stroke-width:2.5;fill:none}
.i-fiber{stroke:var(--muted);stroke-width:2;stroke-linecap:round}
.i-grid{stroke:var(--glass);stroke-width:1;opacity:.7}
.c-unit{fill:var(--glass-fill);stroke:var(--glass);stroke-width:1.5}
.c-band{fill:var(--edge-soft)}
.c-inner2{fill:none;stroke:var(--edge);stroke-width:1.5;stroke-dasharray:5 3}
.diagram-thick .s-text{font-size:22px}
.diagram-part .s-text{font-size:19px}
.diagram-process .s-small{font-size:14.5px}
.split-diagram{grid-template-columns:minmax(0,1.45fr) minmax(0,1fr)}
@media (max-width:860px){.split-diagram{grid-template-columns:minmax(0,1fr)}}
.p-sub{fill:var(--surface2);stroke:var(--line2);stroke-width:1}
.p-asic{fill:var(--chip);stroke:var(--glass);stroke-width:1.2}
.p-eng{fill:var(--surface);stroke:var(--glass);stroke-width:1.2}
.p-chip{fill:var(--chip);stroke:var(--line2);stroke-width:1}
.p-chip-text{fill:var(--head);font:600 15px "IBM Plex Sans",Arial,sans-serif}
.p-text{fill:var(--muted);font:500 15px "IBM Plex Sans",Arial,sans-serif}
.p-small{fill:var(--faint);font:400 13px "IBM Plex Sans",Arial,sans-serif}
.p-small-l{fill:var(--label);font:400 13px "IBM Plex Sans",Arial,sans-serif}
.p-cap{fill:var(--glass);font:600 16px "IBM Plex Sans",Arial,sans-serif}
.p-label{fill:var(--text);font:500 16px "IBM Plex Sans",Arial,sans-serif;text-anchor:middle}
.p-wg{stroke:var(--glass);stroke-width:2.5}
.p-ssc{fill:var(--fiber)}
.p-core{stroke:var(--edge);stroke-width:2}
.p-fiber-s{stroke:var(--fiber);stroke-width:1.6;opacity:.85}
.p-clad{stroke:var(--fiber);stroke-width:4;stroke-linecap:round}
.p-clad-path{stroke:var(--fiber);stroke-width:4;stroke-linecap:round;fill:none}
.p-cladbox{fill:var(--fiber);opacity:.9}
.p-coat{fill:var(--coat)}
.p-glass{fill:var(--glass-fill);stroke:var(--glass);stroke-width:1.5}
.p-glassbody{fill:var(--glass-fill)}
.p-glass-o{fill:none;stroke:var(--glass);stroke-width:1.5}
.p-hatch{stroke:var(--glass);stroke-width:1;opacity:.22}
.p-void{fill:var(--surface)}
.p-bore{fill:none;stroke:var(--glass);stroke-width:1.6}
.p-face{stroke:var(--edge);stroke-width:3}
.p-weld{fill:var(--weld)}
.p-fid{stroke:var(--weld);stroke-width:2.5;fill:none}
.p-beam{fill:var(--beam);opacity:.35}
.p-glue{fill:#C9B26B;opacity:.85}
.p-move line,.p-move path{stroke:var(--label);stroke-width:2;fill:none}
.p-loop{stroke:var(--label);stroke-width:1.6;stroke-dasharray:5 4;fill:none}
.p-box2{fill:var(--surface2);stroke:var(--line2)}
.p-push{stroke:var(--edge);stroke-width:3}
.p-step{stroke:var(--edge);stroke-width:2.5}
.p-arrowhead{fill:var(--edge)}
.p-ring{fill:var(--surface2);stroke:var(--line2);stroke-width:1.5}
.p-icon{stroke:var(--head);stroke-width:3;fill:none}
.p-icon-thin{stroke:var(--head);stroke-width:1.8}
.p-icon-fill{fill:var(--head)}
.p-cut{stroke:var(--weld);stroke-width:2.2;stroke-dasharray:4 4}
.p-stop{stroke:var(--head);stroke-width:3}
.p-hl{fill:none;stroke:var(--edge);stroke-width:2;stroke-dasharray:5 4}
.p-lead{stroke:var(--faint);stroke-width:1}
.p-tag{fill:var(--glass)}
.p-tag-t{fill:var(--glass-ink);font:700 13px "IBM Plex Sans",Arial,sans-serif}
.s-box-hl{stroke:var(--glass)}
.diagram-cpo{min-width:640px}.diagram-compare{min-width:700px}.diagram-reel{min-width:780px}
.c-axis{stroke:var(--label);stroke-width:1}
.c-grid{stroke:var(--line);stroke-width:1}
.c-one{stroke:var(--label);stroke-dasharray:4 4}
.c-tick{fill:var(--faint);font:400 15px "IBM Plex Sans",Arial,sans-serif}
.c-title{fill:var(--label);font:500 15px "IBM Plex Sans",Arial,sans-serif}
.c-ann{fill:var(--label);font:600 14px "IBM Plex Sans",Arial,sans-serif}
.c-dl{fill:var(--text);font:500 15px "IBM Plex Sans",Arial,sans-serif}
.c-line{fill:none;stroke-width:2;stroke-linejoin:round;stroke-linecap:round}
.c-s1{stroke:var(--s1)}.c-s2{stroke:var(--s2)}.c-s3{stroke:var(--s3)}
.c-cross{stroke:var(--label);stroke-width:1;opacity:0}
.c-hit{fill:transparent;cursor:crosshair}
.chart-wrap{position:relative}
.chart-tip{position:absolute;top:12px;left:0;background:var(--bg-deep);border:1px solid var(--line2);border-radius:10px;padding:10px 12px;
  font-size:.82rem;color:var(--text);display:flex;flex-direction:column;gap:4px;pointer-events:none;min-width:160px;box-shadow:0 8px 24px rgba(0,0,0,.35)}
.chart-tip b{color:var(--head);font-weight:600}
.legend{display:flex;flex-wrap:wrap;gap:6px 16px;font-size:.84rem;color:var(--text);margin-bottom:8px}
.legend span,.chart-tip span{display:inline-flex;align-items:center;gap:7px}
.sw{display:inline-block;width:14px;height:3px;border-radius:2px}
.sw-s1,.sw0{background:var(--s1)}.sw-s2,.sw1{background:var(--s2)}.sw-s3,.sw2{background:var(--s3)}
details.values{margin-top:12px}
details.values summary{cursor:pointer;color:var(--glass);font-size:.88rem;font-weight:600}
details.values .tbl-wrap{margin-top:10px}
.proof-3{grid-template-columns:repeat(3,minmax(0,1fr));padding-block:8px 0}
@media (max-width:860px){.proof-3{grid-template-columns:minmax(0,1fr)}}
.tag-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.tag-grid li{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-width:0}
.tag-grid h3{color:var(--head);margin-bottom:4px}
.tag-grid p{color:var(--muted);font-size:.94rem}
@media (max-width:860px){.tag-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:520px){.tag-grid{grid-template-columns:minmax(0,1fr)}}
.tagdot{display:inline-grid;place-items:center;width:24px;height:24px;border-radius:50%;background:var(--glass);color:var(--glass-ink);font-size:.78rem;font-weight:700;flex:none}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}