@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/inter-0.ttf) format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/inter-1.ttf) format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/inter-2.ttf) format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(/fonts/inter-3.ttf) format('truetype');
}
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url(/fonts/inter-4.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-0.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-1.ttf) format('truetype');
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(/fonts/ibm-plex-mono-2.ttf) format('truetype');
}

:root{--navy:#102c42;--ink:#172c3d;--muted:#607384;--line:#dce5ec;--bg:#f5f8fb;--white:#fff;--teal:#087f8c;--teal-soft:#e8f6f6;--blue:#2464d5;--mono:'IBM Plex Mono',monospace;--sans:Inter,system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:90px}body{margin:0;color:var(--ink);background:var(--bg);font:16px/1.55 var(--sans);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}a:hover{color:var(--teal)}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #66c9d4;outline-offset:3px}svg{vertical-align:middle}.icon{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}.wrap{max-width:1376px;margin:auto;padding:0 40px}.topbar{height:76px;background:white;border-bottom:1px solid var(--line);position:relative;z-index:20}.topbar .wrap{height:100%;display:flex;align-items:center;gap:44px}.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:-1px;font-size:25px;color:var(--navy);white-space:nowrap}.brand-mark{display:grid;place-items:center;width:31px;height:31px;border:2px solid var(--teal);color:var(--teal);border-radius:7px;font-family:var(--mono);font-size:14px;letter-spacing:-2px;padding-right:2px}.brand span:last-child{color:var(--teal)}#main-nav{display:flex;gap:29px;align-items:center;font-size:14px;font-weight:550;flex:1}#main-nav a{position:relative;padding:27px 0}#main-nav a.active{color:var(--teal)}#main-nav a.active:after{position:absolute;bottom:0;left:0;right:0;content:'';height:3px;background:var(--teal)}.header-end{display:flex;align-items:center;gap:18px;font-size:13px;color:var(--muted)}.header-end .button{font-size:13px;padding:8px 13px}.mobile-menu{display:none;border:0;background:none;padding:8px}.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid var(--line);border-radius:7px;padding:10px 15px;background:white;color:var(--ink);font-size:14px;font-weight:550;line-height:1.35;transition:background .15s,border-color .15s}.button:hover{border-color:#9cc9cf;background:#f4fbfc;color:var(--teal)}.button.primary{background:var(--teal);color:white;border-color:var(--teal)}.button.primary:hover{background:#066b76}.button.dark{background:var(--navy);color:white;border-color:var(--navy)}.button.small{padding:7px 10px;font-size:13px}.button.ghost{background:transparent;border:0}.mono{font-family:var(--mono)}.muted{color:var(--muted)}.eyebrow{font-size:12px;font-weight:650;letter-spacing:1.3px;text-transform:uppercase;color:var(--teal)}h1,h2,h3,p{margin-top:0}h1{font-size:38px;line-height:1.16;letter-spacing:-1.3px;font-weight:650}h2{font-size:22px;letter-spacing:-.5px;line-height:1.3;font-weight:650}h3{font-size:16px;line-height:1.4;font-weight:650}p{margin-bottom:15px}.text-link{color:var(--teal);font-weight:550}.text-link:hover{text-decoration:underline}.home-intro{display:flex;align-items:flex-end;justify-content:space-between;padding:34px 0 23px;gap:25px}.home-intro h1{margin:8px 0 8px}.home-intro p{color:var(--muted);margin:0;font-size:15px}.data-stamp{text-align:right;font-size:12px;line-height:1.9;flex-shrink:0}.data-stamp strong{color:var(--navy);font-weight:600}.search-panel{background:var(--navy);border-radius:12px;padding:26px 28px;color:white;display:grid;grid-template-columns:1fr auto;gap:28px}.search-main{min-width:0}.search-label{font-size:13px;color:#c4d8e7;font-weight:500;margin-bottom:10px}.search-box{display:flex;align-items:center;background:white;border-radius:7px;min-height:56px;padding:5px 5px 5px 16px;gap:11px}.search-box .icon{color:var(--muted)}.search-box input{min-width:0;flex:1;border:0;background:transparent;outline:none;font-size:16px;color:var(--ink)}.search-box input::placeholder{color:#8596a4}.search-box .button{padding:12px 21px;min-height:46px;border-radius:5px}.search-examples{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:12px;margin-top:13px;color:#a9c3d5}.search-examples a{color:#deeff9;border-bottom:1px solid #526f82}.search-stats{display:flex;align-items:center;padding-left:30px;border-left:1px solid #3b5365;gap:28px}.stat strong{display:block;font:500 30px/1.3 var(--mono);letter-spacing:-1.2px}.stat span{font-size:12px;color:#adc5d6}.page-section{margin-top:31px}.section-head{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:17px}.section-head h2{margin:0}.section-head .text-link{font-size:13px}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--line);margin-bottom:19px;overflow-x:auto}.tab{padding:10px 17px 12px;border:0;border-bottom:2px solid transparent;background:transparent;white-space:nowrap;color:var(--muted);font-size:14px;font-weight:550}.tab[aria-selected=true]{border-color:var(--teal);color:var(--teal)}.tab-panel[hidden]{display:none}.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.category-card{background:white;border:1px solid var(--line);border-radius:9px;padding:19px 20px;display:flex;flex-direction:column;min-height:130px;transition:transform .15s,border-color .15s}.category-card:hover{transform:translateY(-2px);border-color:#8fbfc8}.category-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:11px}.category-symbol{font-family:var(--mono);font-size:14px;color:var(--teal);background:var(--teal-soft);padding:3px 8px;border-radius:4px}.count{font:12px var(--mono);color:var(--muted)}.category-card h3{margin:0 0 4px}.category-card p{font-size:13px;color:var(--muted);margin:0}.category-card.primary-card{background:#edf7f8;border-color:#bcdde0}.section-note{font-size:12px;color:var(--muted);margin:12px 0 0;line-height:1.6}.section-note a{text-decoration:underline;text-underline-offset:2px}.home-bottom{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:22px}.panel{background:white;border:1px solid var(--line);border-radius:9px;overflow:hidden}.panel-pad{padding:23px}.panel-title{display:flex;align-items:center;justify-content:space-between;padding:17px 21px;border-bottom:1px solid var(--line);gap:15px}.panel-title h2,.panel-title h3{margin:0}.panel-title h2{font-size:17px}.panel-title .muted{font-size:12px}table{border-collapse:collapse;width:100%;font-size:14px;text-align:left}th{font-size:12px;font-weight:550;color:var(--muted);background:#f8fafc}td,th{padding:12px 19px;border-bottom:1px solid #e7edf2;vertical-align:top}tr:last-child td{border-bottom:0}td .name-link{font-weight:550;color:var(--navy)}td .name-link:hover{color:var(--teal)}td .subline{font-size:12px;color:var(--muted);margin-top:3px}.cas-link{font-family:var(--mono);font-size:13px;color:var(--teal);white-space:nowrap}.formula{font-family:var(--mono);font-size:14px;white-space:nowrap}.formula sub{font-size:.76em}.table-wrap{overflow:auto}.tool-link{display:flex;align-items:flex-start;gap:13px;padding:17px 19px;border-bottom:1px solid var(--line)}.tool-link:last-child{border-bottom:0}.tool-link .icon{color:var(--teal);margin-top:4px}.tool-link strong{display:block;font-size:14px;font-weight:600}.tool-link p{font-size:12px;color:var(--muted);margin:4px 0 0}.provenance-strip{padding:19px 23px;display:flex;align-items:center;justify-content:space-between;gap:20px;background:#ecf3f7;border:1px solid var(--line);border-radius:8px;margin-top:27px;font-size:13px}.provenance-strip strong{display:block;font-size:14px;margin-bottom:3px}.source-logos{display:flex;gap:23px;align-items:center;color:#496377;font-weight:650;font-size:14px}footer{border-top:1px solid var(--line);margin-top:43px;background:white;padding:28px 0 23px;font-size:12px;color:var(--muted)}.footer-main{display:flex;align-items:center;justify-content:space-between;gap:20px}.footer-main .brand{font-size:20px}.footer-links{display:flex;gap:20px;flex-wrap:wrap}.footer-note{display:flex;justify-content:space-between;gap:24px;margin-top:19px;line-height:1.7}.breadcrumbs{display:flex;align-items:center;gap:9px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin:24px 0 17px}.breadcrumbs a:hover{color:var(--teal)}.detail-hero{background:white;border:1px solid var(--line);border-radius:10px;padding:26px 29px;position:relative}.detail-heading{display:flex;justify-content:space-between;gap:25px;align-items:flex-start}.detail-heading h1{margin:7px 0 11px;font-size:33px;overflow-wrap:anywhere}.identity-sub{display:flex;gap:20px;flex-wrap:wrap;align-items:center;font-size:14px;color:var(--muted)}.identity-sub strong{color:var(--navy);font-weight:550}.cas-pill{font:500 18px var(--mono);color:var(--navy);display:flex;align-items:center;gap:10px}.tag{display:inline-flex;align-items:center;font-size:12px;color:#456477;background:#edf3f7;padding:4px 8px;border:1px solid #dbe6ee;border-radius:4px;line-height:1.35}.tag.teal{color:#087380;background:#e9f6f5;border-color:#c9e7e5}.tags{display:flex;gap:7px;flex-wrap:wrap}.hero-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:22px}.description{margin:18px 0 0;color:#51697b;font-size:15px;max-width:890px;line-height:1.65}.description em{font-size:12px;font-style:normal;color:var(--muted);white-space:nowrap}.anchor-nav{display:flex;gap:23px;padding:15px 2px;font-size:13px;color:var(--muted);overflow:auto;white-space:nowrap;border-bottom:1px solid var(--line);margin-bottom:22px}.detail-grid{display:grid;grid-template-columns:minmax(0,1fr) 326px;gap:22px;align-items:start}.detail-main{display:grid;gap:22px}.detail-aside{display:grid;gap:19px}.detail-aside .panel-pad{padding:20px}.detail-aside h3{font-size:15px;margin-bottom:15px}.property-table td:first-child{color:var(--muted);width:34%}.property-table td:nth-child(2){font-family:var(--mono);font-size:13px;overflow-wrap:anywhere}.property-table td:last-child{width:90px;font:12px var(--sans);color:var(--teal)}.property-table td a:hover{text-decoration:underline}.field-stack{display:grid;gap:13px}.field-stack label{display:block;color:var(--muted);font-size:12px;margin-bottom:5px}.code-field{background:#f6f9fb;border:1px solid #e0e9ef;border-radius:6px;display:flex;gap:10px;align-items:flex-start;padding:11px 12px}.code-field code{font:12px/1.6 var(--mono);overflow-wrap:anywhere;min-width:0;flex:1}.copy-icon{border:0;background:transparent;color:var(--muted);padding:0 2px;flex-shrink:0}.aliases{display:flex;gap:7px;flex-wrap:wrap}.alias{font-size:13px;padding:5px 9px;background:#f4f7fa;border:1px solid var(--line);border-radius:5px;overflow-wrap:anywhere}.source-link{display:flex;justify-content:space-between;align-items:center;padding:10px 0;border-bottom:1px solid #e8edf2;gap:10px}.source-link:last-child{border:0}.source-link strong{display:block;font-size:13px;font-weight:600}.source-link small{display:block;font-size:12px;color:var(--muted);margin-top:2px}.source-link .icon{width:14px;height:14px;color:var(--muted)}.country{font:12px var(--mono);background:#f0f4f7;border:1px solid var(--line);padding:3px 6px;border-radius:4px;align-self:flex-start}.search-engines{display:flex;gap:7px;flex-wrap:wrap}.search-engines a{font-size:12px;border:1px solid var(--line);border-radius:5px;padding:7px 10px;background:white}.search-engines a:hover{color:var(--teal);border-color:#9bbfc4}.note-box{border-left:3px solid #a5c9d0;background:#f2f8fa;padding:13px 16px;color:#526c7e;font-size:13px;line-height:1.6}.note-box p:last-child{margin:0}.relation-list{display:grid;grid-template-columns:1fr 1fr;gap:10px}.relation-item{padding:12px 13px;border:1px solid var(--line);border-radius:6px;min-width:0}.relation-item strong{display:block;font-size:13px;overflow-wrap:anywhere}.relation-item small{font-size:12px;color:var(--muted)}.calc-grid{display:grid;grid-template-columns:1fr 130px 1fr;gap:12px;align-items:end}.input-label{font-size:12px;color:var(--muted);display:block;margin-bottom:7px}input.field,select.field,textarea.field{width:100%;border:1px solid #cad8e2;border-radius:6px;background:white;padding:10px 12px;min-height:43px;color:var(--ink)}textarea.field{min-height:140px;resize:vertical;font-family:var(--mono);font-size:14px}.calc-answer{background:var(--teal-soft);border:1px solid #c0dfe0;border-radius:6px;padding:10px 13px;min-height:43px;font-family:var(--mono);font-size:14px}.composition-list{display:grid;gap:13px}.composition-row{display:grid;grid-template-columns:34px 1fr 62px;gap:12px;align-items:center;font-size:13px}.composition-row code{font-family:var(--mono);color:var(--teal)}.bar{height:6px;background:#edf2f5;border-radius:9px;overflow:hidden}.bar i{display:block;height:100%;background:#58a8b2;border-radius:9px}.catalog-header{display:flex;justify-content:space-between;gap:20px;align-items:flex-end;margin:27px 0 22px}.catalog-header h1{font-size:30px;margin-bottom:8px}.catalog-header p{font-size:14px;color:var(--muted);margin:0}.catalog-controls{display:flex;gap:12px;margin-bottom:18px;align-items:center;flex-wrap:wrap}.catalog-controls .search-box{border:1px solid var(--line);flex:1;min-width:220px;min-height:45px;padding:5px 12px}.catalog-controls .search-box input{font-size:14px}.catalog-controls select{max-width:220px;font-size:13px}.catalog-layout{display:grid;grid-template-columns:225px minmax(0,1fr);gap:23px}.filter-sidebar{padding:17px 18px;background:white;border:1px solid var(--line);border-radius:8px;align-self:start}.filter-sidebar h3{font-size:13px;margin:1px 0 11px}.filter-sidebar a{display:flex;justify-content:space-between;font-size:13px;padding:7px 0;color:var(--muted);gap:10px}.filter-sidebar a.active{color:var(--teal);font-weight:600}.filter-sidebar hr{border:0;border-top:1px solid var(--line);margin:14px 0}.pagination{display:flex;justify-content:center;gap:7px;margin-top:22px;flex-wrap:wrap}.pagination a,.pagination button{min-width:34px;padding:6px 9px;text-align:center;background:white;border:1px solid var(--line);border-radius:5px;font-size:13px}.pagination .current{background:var(--navy);color:white;border-color:var(--navy)}.empty-state{padding:45px 24px;text-align:center;color:var(--muted)}.alphabet{display:flex;flex-wrap:wrap;gap:7px}.alphabet a{font:500 16px var(--mono);padding:10px 16px;border:1px solid var(--line);border-radius:6px;background:white}.element-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:8px}.element-tile{padding:11px 5px;text-align:center;background:white;border:1px solid var(--line);border-radius:6px}.element-tile strong{font:500 20px var(--mono);color:var(--teal);display:block}.element-tile small{font-size:12px;color:var(--muted)}.article{max-width:940px;margin:30px auto}.article h1{font-size:32px}.article h2{font-size:21px;margin-top:32px}.article p,.article li{font-size:15px;line-height:1.8;color:#4d6476}.article a{color:var(--teal);text-decoration:underline;text-underline-offset:3px}.article .panel{padding:28px}.article ul{padding-left:23px}.tools-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}.tool-form{display:grid;gap:15px}.result-area{margin-top:19px}.error-text{color:#a94a37;font-size:13px}.success-text{color:#087b6a;font-size:13px}.toast{position:fixed;bottom:22px;left:50%;transform:translate(-50%,15px);background:var(--navy);color:white;padding:11px 19px;border-radius:7px;font-size:13px;z-index:100;opacity:0;pointer-events:none;transition:.2s}.toast.visible{opacity:1;transform:translate(-50%,0)}.compare-tray{position:fixed;right:24px;bottom:23px;display:flex;gap:12px;align-items:center;padding:12px 15px;border-radius:9px;background:var(--navy);color:white;box-shadow:0 6px 20px #09293c33;z-index:50;font-size:13px}.compare-tray[hidden]{display:none}.compare-tray .button{font-size:12px}.compare-table th{min-width:170px}.compare-table th:first-child{min-width:140px}.search-suggestions{position:absolute;left:0;right:0;top:calc(100% + 5px);background:white;color:var(--ink);border:1px solid var(--line);border-radius:7px;box-shadow:0 10px 25px #09293c15;z-index:30;overflow:hidden}.search-container{position:relative}.suggestion{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;font-size:14px;gap:15px;border-bottom:1px solid var(--line)}.suggestion:hover{background:#eff8f9}.suggestion small{font:12px var(--mono);color:var(--teal)}.result-meta{display:flex;justify-content:space-between;gap:15px;margin:0 0 13px;font-size:13px;color:var(--muted)}.document-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.document-card{border:1px solid var(--line);border-radius:7px;padding:15px}.document-card h3{font-size:14px;margin:0 0 7px}.document-card p{font-size:12px;color:var(--muted);margin-bottom:11px}.inline-actions{display:flex;gap:8px;flex-wrap:wrap}.mini-search{display:flex;gap:8px}.mini-search input{min-width:0}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.launch-note{color:var(--muted);font-size:12px}.badge-count{font:12px var(--mono);background:#edf4f7;padding:2px 6px;border-radius:3px}.check-cell{width:35px;padding-right:0}input[type=checkbox]{accent-color:var(--teal);width:16px;height:16px}.definitions{display:grid;gap:10px}.definition{font-size:14px;padding:13px 0;border-bottom:1px solid var(--line)}.definition strong{display:block;margin-bottom:3px}.definition p{font-size:13px;color:var(--muted);margin:0}.pdf-frame{width:100%;height:720px;border:1px solid var(--line);border-radius:6px}.license-line{font-size:12px;color:var(--muted)}
@media(min-width:1450px){.wrap{padding-left:25px;padding-right:25px}}
@media(max-width:1100px){.wrap{padding:0 25px}.header-end>span{display:none}.topbar .wrap{gap:30px}#main-nav{gap:22px}.home-bottom{grid-template-columns:minmax(0,1fr) 290px}.detail-grid{grid-template-columns:minmax(0,1fr) 290px}.search-stats{gap:17px;padding-left:22px}.stat strong{font-size:25px}.category-card{padding:17px}.source-logos{gap:13px}.element-grid{grid-template-columns:repeat(10,minmax(0,1fr))}.detail-hero{padding:23px}}
@media(max-width:850px){.header-end{display:none}.topbar .wrap{justify-content:space-between}.topbar{height:67px}#main-nav{flex:0;gap:19px}#main-nav a{padding:22px 0}.home-intro h1{font-size:32px}.search-panel{grid-template-columns:1fr;padding:23px;gap:0}.search-stats{display:none}.home-bottom,.detail-grid{grid-template-columns:1fr}.home-bottom>aside{display:grid;grid-template-columns:1fr}.detail-aside{grid-template-columns:1fr 1fr}.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.catalog-layout{grid-template-columns:185px minmax(0,1fr)}.filter-sidebar{padding:15px}.provenance-strip{align-items:flex-start}.source-logos{flex-wrap:wrap;max-width:250px}.element-grid{grid-template-columns:repeat(8,minmax(0,1fr))}.tools-grid{grid-template-columns:1fr}.data-stamp{display:none}.detail-heading{flex-wrap:wrap;gap:12px}.detail-heading h1{font-size:29px}}
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