:root{--ink:#222019;--muted:#625c50;--night:#1b1a17;--night2:#27231c;--paper:#f8f6ef;--white:#fff;--violet:#efd199;--link:#6d5020;--line:#ddd6c7;--max:1320px;font-family:Arial,Helvetica,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}a{color:var(--link);text-underline-offset:.22em}a:hover{text-decoration-thickness:.13em}img{display:block;width:100%;height:auto}button,input,select,textarea{font:inherit}button,select{cursor:pointer}button:disabled{opacity:.55;cursor:default}[hidden]{display:none!important}:focus-visible{outline:3px solid #966829;outline-offset:4px}.sr,.skip:not(:focus){position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip-path:inset(50%);white-space:nowrap}.skip:focus{position:fixed;z-index:10;top:10px;left:10px;padding:12px;background:#fff}
.wrap{width:min(var(--max),calc(100% - 100px));margin-inline:auto}.narrow{width:min(880px,calc(100% - 100px))}.site-header{background:white;border-bottom:1px solid #e2dccf}.masthead{min-height:83px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:inline-flex;gap:11px;align-items:center;white-space:nowrap;flex-shrink:0;font-size:16px;letter-spacing:.09em;text-decoration:none;color:inherit}.brand b{font-weight:850}.brand-mark{width:39px;height:39px;display:grid;place-items:center;background:var(--night);color:var(--violet);border-radius:4px}.brand-mark svg{width:31px;height:31px}.masthead nav{display:flex;align-items:center;gap:clamp(11px,1.65vw,26px)}.masthead nav a{font-size:13px;white-space:nowrap;color:var(--ink);font-weight:750;text-decoration:none;padding:8px 0}.masthead nav a:hover,.masthead nav [aria-current]{text-decoration:underline;color:var(--link)}.menu{padding:9px 14px;border:1px solid var(--line);background:white;color:var(--ink);border-radius:4px}
h1,h2,h3,p,dl{margin-top:0}h1,h2{font-family:Georgia,'Times New Roman',serif;font-weight:400;letter-spacing:-.045em}h1{font-size:clamp(52px,7.6vw,109px);line-height:.99;margin-bottom:23px}h2{font-size:clamp(35px,4.65vw,67px);line-height:1.04;margin-bottom:22px}h3{font-size:23px;letter-spacing:-.025em;line-height:1.22;margin-bottom:12px}p,li,dd{line-height:1.65;font-size:16px}p:last-child{margin-bottom:0}.eyebrow{font-size:11px;font-weight:800;letter-spacing:.18em;line-height:1.45;color:#795a2b;margin-bottom:19px}.lead{font-size:clamp(17px,1.7vw,22px);line-height:1.55;max-width:670px}.section-lead{max-width:685px;font-size:19px;color:var(--muted)}
.hero,.intro,.feature,footer{background:var(--night);color:#fcf8ef}.hero{position:relative;isolation:isolate;overflow:hidden}.hero-art{position:absolute;inset:0 0 0 40%;z-index:-1;background:#25221c}.hero-art img{height:100%;object-fit:cover;object-position:60% 51%}.hero-art:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#1b1a17 0%,rgba(27,26,23,.75) 15%,rgba(27,26,23,.18) 45%,transparent 72%)}.hero-inner{min-height:610px;display:flex;align-items:center;padding-block:48px 84px;position:relative}.hero-copy{width:min(680px,63%)}.hero .eyebrow,.intro .eyebrow,.feature .eyebrow,.result .eyebrow{color:var(--violet)}.hero h1{font-size:clamp(50px,6.3vw,89px);line-height:.99}.hero h1 em{color:var(--violet);font-weight:400}.hero .lead,.intro .lead,.feature p:not(.eyebrow){color:#e9dfce}.hero .lead{max-width:500px;margin-bottom:27px}
.actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}.button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 19px;border:1px solid transparent;border-radius:3px;font-size:14px;font-weight:800;line-height:1.3;text-decoration:none}.button.primary{background:var(--violet);color:#2c2011;border-color:var(--violet)}.button.primary:hover{background:#f6dfa9}.button.outline{border-color:#a89c89;color:#fff;background:rgba(27,26,23,.3)}.button.outline:hover{background:#3f3426}.button.light{background:white;border-color:#958ba5;color:var(--ink)}
.section{padding-block:78px}.grid{display:grid;gap:17px;margin-top:27px}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.tile{padding:27px 27px 24px;background:#fff;border:1px solid var(--line);border-radius:3px;display:flex;align-items:flex-start;flex-direction:column;min-width:0;height:100%}.tile .eyebrow{margin-bottom:16px}.tile p:not(.eyebrow){color:var(--muted)}.tile>a{font-weight:800;font-size:14px;margin-top:auto;padding-top:9px}.badge{font-size:10px;font-weight:800;letter-spacing:.075em;background:#efeaf7;color:#50386f;padding:5px 7px;margin-bottom:16px}.element-symbol{display:grid;line-height:1.1;min-width:90px;color:#5e441c;background:#f1ead7;font:400 38px Georgia,serif;margin-bottom:19px;padding:12px 16px}.element-symbol small{font:800 12px Arial,sans-serif;margin-bottom:4px}
.feature{padding-block:72px}.feature-grid{display:grid;grid-template-columns:1fr .88fr;gap:9%;align-items:center}.feature p:not(.eyebrow){max-width:570px;margin-bottom:23px}.stack{border:1px solid #5a4e3e;padding-inline:22px;background:#2c261d}.stack>div{display:grid;grid-template-columns:37px 1fr;gap:8px;padding-block:19px;border-bottom:1px solid #5a4e3e}.stack>div:last-child{border:0}.stack b{color:var(--violet);font-size:13px}.stack span{font-size:18px;font-weight:750}.stack small{display:block;margin-top:5px;font-size:13px;line-height:1.4;font-weight:400;color:#e3d6bf}.callout{display:flex;align-items:center;justify-content:space-between;gap:26px;background:#efe8d8;border:1px solid #ded2ba;padding:34px}.callout h2{font-size:clamp(30px,4vw,53px);margin-bottom:12px}.callout .button{flex-shrink:0}.section:has(.callout){padding-top:0}
footer{padding-top:45px}.footer-main{display:grid;grid-template-columns:1fr 1.3fr;gap:38px;padding-bottom:34px}.footer-main .brand-mark{background:#443521}.footer-main p{font-size:14px;color:#dfd3bf;margin:13px 0 0}.footer-main nav{display:flex;align-content:flex-start;justify-content:flex-end;flex-wrap:wrap;gap:11px 22px}.footer-main nav a{font-size:14px;color:#efe8d8;text-decoration:none}.footer-main nav a:hover{text-decoration:underline}.footer-bottom{display:flex;justify-content:space-between;gap:12px;border-top:1px solid #5a4e3e;padding-block:18px;color:#dfd3bf;font-size:12px}
.intro{padding-block:50px 61px}.intro h1{font-size:clamp(43px,6.2vw,87px);max-width:1100px}.intro .lead{margin-bottom:0}.crumb{color:#ebd3a7;font-size:14px}.intro .eyebrow{margin-top:25px}.narrow>h2:not(:first-child){margin-top:32px}.narrow>p{font-size:17px}.stage{border-top:1px solid var(--line);padding-block:20px}.stage .eyebrow{margin-bottom:8px}.stage h3{margin-bottom:7px}.method{padding:24px 27px;background:#f2ecdf;border:1px solid var(--line);margin-block:27px 0}.method h2{font-size:clamp(30px,3.6vw,47px)}dt{font-weight:800;margin-top:12px}dd{margin:3px 0 0;color:var(--muted)}.references{padding-left:19px}.references li{padding-block:6px}.references small{display:block;color:var(--muted)}.references li p{margin:3px 0 0;font-size:14px;color:var(--muted)}
.tool-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:19px;align-items:start}.tool{padding:28px;min-width:0;background:#fff;border:1px solid var(--line);border-radius:3px}.tool h2{font-size:clamp(29px,3.5vw,48px)}.tool.result{background:var(--night2);color:#fcf8ee}.tool.result .note{color:#e5d7bf}.tool .note,.note{font-size:13px;color:var(--muted);line-height:1.55;margin-top:12px}label{display:block;font-size:14px;font-weight:800;margin:0 0 6px}input,textarea,select{width:100%;max-width:470px;min-height:43px;padding:9px 11px;background:white;border:1px solid #9b8e77;color:var(--ink);border-radius:3px;margin:0 0 15px}textarea{resize:vertical}.fields{display:grid;grid-template-columns:minmax(0,1fr) minmax(95px,145px);align-items:center;gap:10px 13px;margin:18px 0}.fields input,.fields label{margin:0}.numbers{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:14px 0 20px}.metric{border:1px solid #6e5a3a;background:#3a3020;padding:14px}.metric b{display:block;font-size:clamp(16px,2.4vw,28px);overflow-wrap:anywhere;margin-bottom:3px}.metric span{font-size:13px;color:#eedec2}.result-list{margin:10px 0 18px;padding-left:22px}.filter-count{font-size:14px;margin:0}
@media(max-width:1080px){.wrap,.narrow{width:calc(100% - 62px)}.masthead{flex-wrap:wrap;padding-block:12px;gap:7px 16px}.brand{font-size:14px}.hero-inner{min-height:550px}.section{padding-block:62px}}
@media(max-width:800px){.masthead{min-height:69px}.masthead nav{width:100%;flex-wrap:wrap;gap:4px 16px}.site-header.enhanced nav{display:none}.site-header.enhanced nav.is-open{display:flex}.hero-copy{width:75%}.hero-art{left:28%}.grid.three,.grid.four{grid-template-columns:repeat(2,minmax(0,1fr))}.feature-grid{gap:30px}.tool-layout,.footer-main{grid-template-columns:1fr}.footer-main nav{justify-content:flex-start}.callout{flex-direction:column;align-items:flex-start}}
@media(max-width:550px){.wrap,.narrow{width:calc(100% - 40px)}.hero{display:flex;flex-direction:column}.hero-inner{order:1;min-height:0;padding-block:43px 28px}.hero-copy{width:100%}.hero h1{font-size:clamp(39px,10.5vw,55px);margin-bottom:16px}.hero .lead{margin-bottom:18px}.hero-art{order:2;position:relative;inset:auto;height:230px;z-index:auto}.hero-art:after{background:linear-gradient(180deg,#1b1a17 0%,transparent 48%)}.hero-art img{object-position:61% 58%}.grid.three,.grid.four,.grid.two,.feature-grid{grid-template-columns:1fr}.section,.feature{padding-block:48px}.tile,.tool,.callout,.method{padding:22px}.intro{padding-block:33px 46px}.footer-bottom{flex-direction:column}.fields{grid-template-columns:minmax(0,1fr) 94px}.button{font-size:13px;padding-inline:13px;min-height:44px}}

.metal-ribbon{background:#f0ebdc;border-bottom:1px solid #ded6c2}.metal-ribbon-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.metal-ribbon-grid a{display:flex;align-items:center;gap:12px;padding:19px 18px;color:#3a3022;border-inline-start:1px solid #ded6c2;text-decoration:none;font-size:15px}.metal-ribbon-grid a:last-child{border-inline-end:1px solid #ded6c2}.metal-ribbon-grid a:hover{background:#eae1ce}.metal-ribbon-grid span{display:grid;place-items:center;width:42px;height:42px;background:#e2d1ac;color:#402d13;font:400 21px Georgia,serif;border:1px solid #cfbb94}.silver span,.silver .element-symbol{background:#e7e5e1;color:#373c42}.platinum span,.platinum .element-symbol{background:#e2e3de;color:#343b34}.palladium span,.palladium .element-symbol{background:#e5dedc;color:#413632}
fieldset{min-width:0;margin:18px 0;border:1px solid var(--line);padding:12px 14px 14px}legend{font-weight:800;padding-inline:5px}.quote-table{width:100%;border-collapse:collapse;font-size:14px;margin:12px 0 20px}.quote-table th,.quote-table td{padding:9px 5px;text-align:right;border-bottom:1px solid #6e5a3a}.quote-table th:first-child{text-align:left}.quote-table thead th{color:#eedec2}.table-wrap{overflow:auto}.result .note{margin-top:16px}
@media(max-width:550px){.metal-ribbon-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.metal-ribbon-grid a{padding:11px 7px;border-bottom:1px solid #ded6c2;font-size:13px;gap:7px}.metal-ribbon-grid span{width:34px;height:34px;font-size:17px}.quote-table{font-size:13px}.quote-table th,.quote-table td{padding:8px 3px}}