@font-face{font-family:Anton;src:url('assets/drain-display.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:Archivo;src:url('assets/drain-body.woff2') format('woff2');font-weight:100 900;font-stretch:62% 125%;font-style:normal;font-display:swap}
@font-face{font-family:'IBM Plex Mono';src:url('assets/perk-mono.woff2') format('woff2');font-weight:400;font-style:normal;font-display:swap}
:root{color-scheme:light;--paper:#E9EBE6;--inset:#DDE1D9;--ink:#171918;--stage:#1D201E;--muted:#5F665D;--muted-dark:#B7B8AE;--accent:#FF6B35;--line:rgba(23,25,24,.22);--dark-line:rgba(238,232,219,.22);--body:Archivo,system-ui,-apple-system,sans-serif;--logo:Anton,system-ui,-apple-system,sans-serif;--mono:'IBM Plex Mono',ui-monospace,monospace;--gutter:clamp(20px,4vw,56px);--ease:cubic-bezier(.22,1,.36,1)}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--paper);color:var(--ink);font:400 16px/1.55 var(--body);font-variation-settings:'wdth' 100;-webkit-font-smoothing:antialiased}::selection{background:var(--accent);color:var(--ink)}a{color:inherit;text-underline-offset:4px}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,.table-scroll:focus-visible{outline:3px solid var(--accent);outline-offset:5px}p,h1,h2,h3,figure{margin:0}h1,h2,h3{font-family:var(--body);font-weight:750;font-variation-settings:'wdth' 105;line-height:1.04;letter-spacing:-.045em}h1{font-weight:760}main{max-width:1560px;margin-inline:auto;padding-inline:var(--gutter)}.label{font-size:13px;font-weight:650;line-height:1.5}.muted,.small-note{color:var(--muted)}.small-note{font-size:14px;line-height:1.6}.skip-link{position:fixed;left:-10000px;top:12px;padding:12px 18px;background:var(--accent);color:var(--ink);z-index:20}.skip-link:focus{left:20px}
/* A small shared lockup gives the content room to breathe. */
.docs-header{display:flex;align-items:center;gap:36px;min-height:72px;background:var(--ink);color:var(--paper);padding-inline:max(var(--gutter),calc((100vw - 1448px)/2));border-bottom:1px solid var(--dark-line);position:relative;z-index:3}.wordmark{display:inline-flex;align-items:center;gap:9px;flex-shrink:0;text-decoration:none}.brand-word{font:400 43px/.9 var(--logo);letter-spacing:-.055em;transform:skewX(-9deg)}.brand-sub{font:750 8px/1.05 var(--body);letter-spacing:-.03em;margin-top:7px}.docs-nav{display:flex;gap:30px;margin-left:auto;align-items:center}.docs-nav a{position:relative;display:flex;align-items:center;min-height:44px;text-decoration:none;font-size:14px;font-weight:550;white-space:nowrap}.docs-nav a[aria-current='page']{color:var(--accent)}.docs-nav a:hover{color:var(--accent)}.preview-badge{font-size:12px;color:var(--muted-dark);padding:5px 9px;border:1px solid var(--dark-line);white-space:nowrap;border-radius:3px}.mobile-menu{display:none}.button{display:inline-flex;align-items:center;justify-content:space-between;gap:32px;padding:14px 20px;min-height:50px;border:1px solid var(--accent);border-radius:3px;background:var(--accent);color:var(--ink);font-size:15px;font-weight:650;line-height:1.35;text-decoration:none;transition:background 180ms var(--ease),border-color 180ms var(--ease)}.button>span{display:inline-block;font-size:21px;line-height:1;transition:transform 180ms var(--ease)}.button:hover{background:#ff8254;border-color:#ff8254}.button:hover>span{transform:translate(2px,-2px)}.button:active{background:#f1602c}.text-link{display:inline-flex;align-items:center;gap:22px;min-height:44px;font-size:15px;font-weight:600;text-decoration:underline;text-decoration-thickness:1px}.text-link:hover{text-decoration-thickness:2px}.text-link>span{font-size:20px;text-decoration:none}
/* Dark introduction, then one continuous paper reading surface. */
.docs-hero{position:relative;isolation:isolate;color:var(--paper);padding-block:70px 64px;min-height:400px}.docs-hero:before{content:'';position:absolute;inset:0 calc((100% - 100vw)/2);background:var(--ink);z-index:-1}.explainer-hero{display:grid;grid-template-columns:1.15fr 1fr;gap:7vw;align-items:end}.hero-kicker{font-size:14px;color:var(--muted-dark);margin-bottom:30px}.docs-hero h1{font-size:clamp(54px,6.25vw,88px);line-height:.99;max-width:11.5ch}.hero-side{max-width:440px;padding-bottom:3px}.hero-side>.hero-lead{font-size:25px;font-weight:650;line-height:1.22;letter-spacing:-.025em;color:var(--paper);margin-bottom:15px;max-width:21ch}.hero-side>p{font-size:17px;line-height:1.55;color:var(--muted-dark);max-width:43ch}.hero-side>.button{margin-top:25px}.hero-side>.hero-note,.hero-note{margin-top:20px;font-size:13px;line-height:1.6;color:var(--muted-dark);max-width:48ch}.process-nav{display:flex;justify-content:space-between;gap:24px;border-bottom:1px solid var(--line);padding-block:20px}.process-nav>a{display:flex;align-items:center;gap:20px;text-decoration:none;font-size:17px;font-weight:650;min-height:44px;flex:1}.process-nav>a>span:first-child{font:400 12px/1.5 var(--mono);color:var(--muted)}.process-nav>a>span:last-child{margin-left:auto;font-size:23px}.process-nav>a+a{padding-left:24px;border-left:1px solid var(--line)}.process-nav>a:hover{color:var(--muted)}
.process-section{display:grid;grid-template-columns:70px minmax(0,1fr);gap:28px;padding-block:64px;border-bottom:1px solid var(--line);scroll-margin-top:28px}.step-number{font:600 15px/1.5 var(--body);letter-spacing:-.03em;padding-top:7px;color:var(--muted)}.step-body{min-width:0}.step-heading{display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1fr);gap:6vw}.step-heading h2{font-size:clamp(36px,4vw,56px);max-width:14ch}.step-copy{max-width:57ch}.step-copy>p+p{margin-top:16px}.step-copy>.text-link{margin-top:16px}.section-lead{font-size:20px;line-height:1.4;font-weight:600;letter-spacing:-.02em}.catalog-reference,.inline-rule{margin-top:34px;padding-top:26px;border-top:1px solid var(--line);display:grid;grid-template-columns:minmax(0,.9fr) minmax(0,1fr);gap:6vw;scroll-margin-top:28px}.catalog-reference h3,.inline-rule h3{font-size:25px;line-height:1.15;letter-spacing:-.025em;max-width:17ch}.catalog-reference p+p,.inline-rule p+p{margin-top:16px}.catalog-reference p{font-size:15px}.catalog-reference p>strong{display:block;font-size:13px;margin-bottom:5px;font-weight:650}.catalog-reference .small-note{font-size:13px}.inline-rule p{max-width:57ch}.evidence-path{list-style:none;margin:30px 0 0;padding:0;display:flex;border-block:1px solid var(--line);gap:20px}.evidence-path li{flex:1;padding:18px 0;font-size:14px;font-weight:550;line-height:1.4;display:flex;align-items:center;gap:12px}.evidence-path li+li{padding-left:20px;border-left:1px solid var(--line)}.evidence-path li>span{display:inline-grid;place-items:center;flex-shrink:0;width:25px;height:25px;border:1px solid var(--line);border-radius:50%;font-size:12px;color:var(--muted)}
/* The illustration is a work surface, with readable inputs and honest states. */
.example{margin-top:34px;background:var(--ink);color:var(--paper);padding:30px}.example-heading{display:flex;align-items:center;justify-content:space-between;gap:25px}.example h3{font-size:30px;line-height:1.12;letter-spacing:-.03em;max-width:20ch}.example-tag{font-size:12px;color:var(--muted-dark);border:1px solid var(--dark-line);padding:5px 8px;border-radius:3px;white-space:nowrap}.example-description{font-size:15px;margin-top:16px;max-width:75ch;color:var(--muted-dark)}.example-form{margin-top:26px}.example-inputs{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}.example-inputs>label{display:flex;flex-direction:column;justify-content:space-between;gap:10px;font-size:14px;line-height:1.4}.money-input{display:flex;align-items:center;gap:7px;min-height:50px;background:var(--stage);border:1px solid #777d73;border-radius:3px;padding:11px 12px;font-size:16px}.money-input>span{color:var(--muted-dark)}.money-input input{width:100%;min-width:0;border:0;background:transparent;color:var(--paper);font:400 16px/1.5 var(--mono);border-radius:0}.example-inputs select{width:100%;min-height:50px;border:1px solid #777d73;border-radius:3px;background:var(--stage);color:var(--paper);padding:10px;font-size:16px}.money-input:focus-within{border-color:var(--accent)}.money-input input:focus-visible{outline:0}.example-submit{margin-top:20px}.example-error{margin-top:18px;color:#ffbaad;font-size:14px}.example-results{display:grid;grid-template-columns:1fr 1fr;gap:35px;margin-top:30px;padding-top:25px;border-top:1px solid var(--dark-line)}.example-breakdown{margin:0;align-self:center}.example-breakdown>div{display:flex;justify-content:space-between;gap:15px;padding-block:9px;font-size:14px}.example-breakdown dd{margin:0;font:400 14px/1.5 var(--mono);white-space:nowrap}.award-result{padding-left:35px;border-left:1px solid var(--dark-line)}.award-result>p:first-child{font-size:13px;color:var(--muted-dark)}.award-result>output{display:block;font:650 clamp(38px,4vw,56px)/1.25 var(--body);letter-spacing:-.045em;color:var(--accent);font-variant-numeric:tabular-nums;overflow-wrap:anywhere;margin-top:4px}.award-result>p:last-child{font-size:14px;max-width:45ch;margin-top:10px;color:var(--muted-dark)}.example-fine{font-size:13px;color:var(--muted-dark);margin-top:25px;max-width:92ch;line-height:1.65}.example-fine a{color:var(--paper)}.route-list{display:grid;grid-template-columns:1fr 1fr;gap:35px;margin-top:30px;border-top:1px solid var(--line)}.route-list>div{padding-top:26px}.route-list>div+div{border-left:1px solid var(--line);padding-left:35px}.route-list h3{font-size:25px;letter-spacing:-.025em;margin-bottom:16px}.route-list p{font-size:16px;max-width:47ch}.wallet-note{display:grid;grid-template-columns:1fr 1fr;gap:6vw;padding-block:40px;border-bottom:1px solid var(--line)}.wallet-note h2{font-size:32px;line-height:1.08}.wallet-note>p{max-width:60ch;font-size:16px}.closing-cta,.paper-end{display:flex;justify-content:space-between;gap:35px;align-items:end;padding-block:64px 72px}.closing-cta h2,.paper-end h2{font-size:clamp(40px,4.5vw,60px);line-height:1.04;max-width:15ch}.closing-cta>div>p,.paper-end>div>p{margin-top:20px;max-width:50ch;font-size:16px}.closing-actions{display:flex;flex-direction:column;align-items:start;gap:12px}.docs-footer{display:grid;grid-template-columns:1fr auto;gap:24px 35px;padding:32px max(var(--gutter),calc((100vw - 1448px)/2));background:var(--ink);color:var(--paper);border-top:1px solid var(--dark-line)}.docs-footer nav{display:flex;gap:28px;align-self:center}.docs-footer nav a{display:flex;align-items:center;min-height:44px;font-size:14px;text-decoration:none}.docs-footer nav a:hover{color:var(--accent)}.footer-status{font-size:12px;color:var(--muted-dark)}.footer-note{font-size:12px;line-height:1.65;color:var(--muted-dark);max-width:72ch;justify-self:end;grid-column:2;grid-row:2}
/* Paper: a quiet index and one legible text column. */
.paper-hero{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:8vw;align-items:end;padding-block:64px}.paper-intro{font-size:18px;max-width:46ch;margin-top:24px;color:var(--muted-dark)}.paper-actions{display:flex;gap:24px;flex-wrap:wrap;align-items:center;margin-top:28px}.cover-meta{border-top:1px solid var(--dark-line);padding-top:22px;max-width:420px}.status-tag{display:inline-flex;font-size:12px;font-weight:550;color:var(--accent);margin-bottom:17px}.cover-meta>p{font-size:16px;color:var(--muted-dark);max-width:40ch}.cover-meta dl{margin:24px 0 14px;border-block:1px solid var(--dark-line)}.cover-meta dl>div{display:flex;justify-content:space-between;gap:20px;padding-block:11px;font-size:13px}.cover-meta dt{color:var(--muted-dark)}.cover-meta dd{margin:0}.cover-meta .text-link{font-size:14px}.paper-status{display:grid;grid-template-columns:220px 1fr;gap:6vw;padding-block:28px;border-bottom:1px solid var(--line)}.paper-status>.label{padding-top:2px}.paper-status>p:last-child{font-size:15px;max-width:86ch;color:var(--muted)}.paper-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:6vw;padding-block:48px 0;align-items:start}.paper-index{position:sticky;top:25px}.paper-index summary{list-style:none;font-size:14px;font-weight:650;margin-bottom:18px;cursor:pointer;display:flex;justify-content:space-between;align-items:center;min-height:30px}.paper-index summary::-webkit-details-marker{display:none}.paper-index summary>span{font-size:22px;font-weight:400}.paper-index[open] summary>span{transform:rotate(45deg)}.paper-index nav{display:flex;flex-direction:column}.paper-index nav>a{display:flex;align-items:baseline;gap:13px;padding-block:13px;min-height:45px;border-top:1px solid var(--line);text-decoration:none;font-size:14px;line-height:1.4}.paper-index nav>a>span{font:400 11px/1.5 var(--mono);color:var(--muted)}.paper-index nav>a[aria-current='location']{font-weight:650;border-top-color:var(--ink)}.paper-index nav>a[aria-current='location']>span{color:var(--ink)}.paper-index nav>a:hover{text-decoration:underline}.index-note{font-size:13px;color:var(--muted);margin-top:22px;max-width:27ch}.paper-content{min-width:0;max-width:78ch}.paper-chapter{padding-bottom:40px;margin-bottom:40px;border-bottom:1px solid var(--line);scroll-margin-top:28px}.paper-chapter>.label{margin-bottom:15px;color:var(--muted);font-size:13px;font-weight:500}.paper-chapter h2{font-size:clamp(30px,3vw,40px);line-height:1.1;margin-bottom:22px;max-width:23ch}.paper-chapter>p:not(.label),.paper-chapter>ul,.paper-chapter>ol{margin-top:17px;line-height:1.7;font-size:16px;max-width:75ch}.paper-chapter li{margin-bottom:8px;padding-left:4px}.paper-chapter a:hover{text-decoration-thickness:2px}.paper-chapter pre{white-space:pre-wrap;overflow-wrap:anywhere;padding:21px 23px;margin-block:25px;background:var(--inset);color:var(--ink);font:400 13px/1.9 var(--mono);border-left:3px solid var(--accent)}.paper-chapter code{font:inherit}.table-scroll{overflow-x:auto;overscroll-behavior-x:contain;margin-block:25px;border-block:1px solid var(--line);max-width:100%}.table-scroll table{border-collapse:collapse;width:100%;min-width:490px;text-align:left;font-size:14px}.table-scroll th{font-size:13px;line-height:1.5;font-weight:600;padding:15px 16px 15px 0;border-bottom:1px solid var(--line)}.table-scroll td{padding:14px 16px 14px 0;border-bottom:1px solid var(--line)}.table-scroll tbody tr:last-child td{border:0}.table-scroll td{font:400 13px/1.5 var(--mono)}.paper-end{padding-block:8px 72px}.paper-end>div>p{max-width:43ch}
@media(min-width:1001px){.paper-index summary{cursor:default;pointer-events:none}.paper-index summary>span{display:none}}
@media(max-width:1100px){.docs-header{gap:24px}.docs-nav{gap:24px}.preview-badge{display:none}.explainer-hero{gap:5vw;grid-template-columns:1fr 1fr}.docs-hero h1{font-size:clamp(52px,6.6vw,74px)}.process-section{grid-template-columns:40px minmax(0,1fr);gap:22px}.step-heading,.inline-rule,.catalog-reference{gap:4vw}.example-inputs{grid-template-columns:repeat(2,minmax(0,1fr))}.paper-layout{grid-template-columns:190px minmax(0,1fr);gap:36px}.paper-status{grid-template-columns:190px minmax(0,1fr);gap:36px}.paper-hero{gap:5vw;grid-template-columns:1.1fr .9fr}.footer-note{max-width:60ch}}
@media(max-width:760px){:root{--gutter:20px}html{scroll-padding-top:20px}.docs-header{min-height:64px;justify-content:space-between;gap:20px}.brand-word{font-size:38px}.brand-sub{font-size:7px;margin-top:6px}.docs-nav,.preview-badge{display:none}.mobile-menu{display:block}.mobile-menu summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:44px;padding:9px 0 9px 14px;list-style:none;cursor:pointer;font-size:14px}.mobile-menu summary::-webkit-details-marker{display:none}.mobile-menu summary>span{font-size:24px;font-weight:400}.mobile-menu[open] summary>span{transform:rotate(45deg)}.mobile-menu nav{position:absolute;top:64px;left:0;right:0;background:var(--stage);padding:14px 20px 20px;border-bottom:1px solid var(--dark-line);box-shadow:0 12px 20px #17191822}.mobile-menu nav a{display:flex;align-items:center;min-height:48px;text-decoration:none;border-bottom:1px solid var(--dark-line);font-size:16px}.mobile-menu nav a[aria-current=page]{color:var(--accent)}.docs-hero{padding-block:36px 40px;min-height:0}.explainer-hero{display:block}.hero-kicker{font-size:13px;margin-bottom:24px}.docs-hero h1{font-size:clamp(44px,10.8vw,64px);line-height:1.03;max-width:12ch}.hero-side{margin-top:28px;max-width:540px}.hero-side>.hero-lead{font-size:23px;max-width:24ch;margin-bottom:12px}.hero-side>p{font-size:16px;max-width:48ch}.hero-side>.button{margin-top:23px}.hero-side>.hero-note{font-size:13px;margin-top:18px}.button{min-height:48px;padding:13px 17px;font-size:14px}.process-nav{gap:13px;padding-block:13px}.process-nav>a{gap:9px;font-size:15px;min-height:44px}.process-nav>a>span:first-child{font-size:11px}.process-nav>a>span:last-child{display:none}.process-nav>a+a{padding-left:13px}.process-section{display:block;padding-block:40px}.step-number{font-size:13px;padding:0;margin-bottom:18px}.step-heading{display:block}.step-heading h2{font-size:38px;max-width:18ch;margin-bottom:22px}.step-heading h2 br{display:none}.step-copy{max-width:64ch}.step-copy>p{font-size:16px}.step-copy>.section-lead{font-size:20px}.step-copy>p+p{margin-top:15px}.inline-rule,.catalog-reference{display:block;padding-top:24px;margin-top:28px}.inline-rule h3,.catalog-reference h3{font-size:25px;max-width:24ch;margin-bottom:17px}.inline-rule p{font-size:16px}.inline-rule .small-note{font-size:14px}.catalog-reference p{font-size:15px}.catalog-reference .small-note{font-size:13px}.evidence-path{display:block;margin-top:24px}.evidence-path li{padding:14px 0;font-size:14px}.evidence-path li+li{border-left:0;border-top:1px solid var(--line);padding:14px 0}.example{margin-top:28px;padding:24px 20px}.example-heading{display:block}.example h3{font-size:29px}.example-tag{margin-top:15px;display:inline-flex;font-size:12px}.example-description{font-size:15px;line-height:1.6}.example-form{margin-top:24px}.example-inputs{gap:20px 14px}.example-inputs>label{font-size:14px}.money-input{padding:10px 9px;gap:5px;min-height:50px}.example-inputs select{min-height:50px;padding:10px}.example-submit{min-height:48px;gap:20px}.example-results{display:block;margin-top:25px;padding-top:16px}.example-breakdown>div{font-size:14px;line-height:1.6;padding-block:8px}.example-breakdown dd{font-size:13px}.award-result{border-left:0;border-top:1px solid var(--dark-line);padding:22px 0 0;margin-top:17px}.award-result>output{font-size:48px}.award-result>p:last-child{font-size:14px;max-width:50ch}.example-fine{font-size:13px;line-height:1.65;margin-top:22px}.route-list{display:block;margin-top:26px}.route-list>div{padding-top:24px}.route-list>div+div{margin-top:23px;border-left:0;border-top:1px solid var(--line);padding:24px 0 0}.route-list h3{font-size:26px}.route-list p{font-size:16px;max-width:62ch}.wallet-note{display:block;padding-block:32px}.wallet-note h2{font-size:30px;margin-bottom:18px}.wallet-note h2 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