:root{--paper:#fff;--card:#fff;--ink:#202124;--muted:#5d6269;--line:#d9dce0;--green:#244aa2;--wash:#f3f5f8;--orange:#9a571f;--serif:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font:15px/1.6 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button,input,select,textarea{font:inherit}button,a,input,select,textarea{touch-action:manipulation}button{cursor:pointer}button:disabled{opacity:.55;cursor:wait}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #5b9785;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.15}h1{font-family:var(--serif);font-size:clamp(36px,5vw,62px);font-weight:400;letter-spacing:-1.8px}h2{font-family:var(--serif);font-size:28px;font-weight:400}h3{font-size:18px}small,.muted{color:var(--muted)}.header{border-bottom:1px solid var(--line);background:var(--paper)}.header-inner{max-width:1200px;margin:auto;display:flex;align-items:center;min-height:90px;padding:16px 30px;gap:38px}.brand{display:flex;align-items:center;gap:10px;font:27px var(--serif);color:var(--ink);white-space:nowrap}.brand-note{font:10px/1.3 system-ui;letter-spacing:1px;text-transform:uppercase;max-width:100px;white-space:normal;color:var(--muted);border-left:1px solid var(--line);padding-left:14px;margin-left:8px}nav{display:flex;gap:25px;margin-left:auto}nav a{font-size:13px;color:var(--muted)}nav a.active{color:var(--green);font-weight:650}.identity{display:flex;gap:15px;align-items:center;font-size:13px}.button{border:1px solid var(--line);border-radius:5px;background:var(--card);padding:10px 16px;color:var(--green);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:550;font-size:13px;text-decoration:none!important;line-height:1.4}.button.primary{background:var(--green);color:white;border-color:var(--green)}.button.quiet{background:transparent}.button.small{padding:7px 12px}.button.danger{color:#9b372d}.button:hover{filter:brightness(.96)}main{max-width:1140px;margin:auto;padding:0 30px;min-height:65vh}.hero{padding:66px 0 52px;display:grid;grid-template-columns:1.6fr 1fr;gap:70px;align-items:center}.eyebrow{color:var(--green);font-size:10px;letter-spacing:2px;text-transform:uppercase;font-weight:750;margin-bottom:20px}.hero h1{margin-bottom:20px}.hero p{color:var(--muted);max-width:500px;font-size:17px;line-height:1.65}.hero .actions{display:flex;gap:12px;margin-top:25px}.example{background:var(--card);border:1px solid var(--line);box-shadow:7px 7px 0 #e9e9df;border-radius:5px;overflow:hidden}.example-top{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);padding:14px 20px;font-size:11px;color:var(--muted)}.example-body{padding:23px}.example-body h3{font:24px var(--serif);margin-bottom:16px}.example-body p{font-size:12px;line-height:1.5;margin:14px 0 0}.example-code{font:12px/1.9 ui-monospace,SFMono-Regular,Consolas,monospace}.example-code .arrow{color:var(--muted)}.badge,.tag{display:inline-flex;align-items:center;padding:3px 9px;border:1px solid var(--line);border-radius:3px;font-size:10px;line-height:1.5;color:var(--muted)}.badge{background:var(--wash);color:var(--green);border-color:transparent}.collection{border-top:1px solid var(--line);padding-top:30px;margin-bottom:65px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}.section-head h2,.section-head h3{margin:0}.stats{display:flex;gap:18px;color:var(--muted);font-size:11px}.stats strong{color:var(--ink);font-weight:600}.toolbar{display:flex;gap:12px;margin:20px 0}.search{flex:1;position:relative}.search input{width:100%;padding:12px 16px 12px 40px}.search::before{content:'⌕';position:absolute;left:15px;top:5px;font-size:25px;color:var(--muted)}input,textarea,select{border:1px solid var(--line);background:var(--card);border-radius:4px;color:var(--ink);padding:10px 12px;min-width:0}select{max-width:220px}textarea{resize:vertical;width:100%;line-height:1.6}label{display:flex;flex-direction:column;gap:8px;font-size:13px;font-weight:550;margin-bottom:22px}label small{font-weight:400}.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.chip{background:transparent;border:1px solid var(--line);border-radius:20px;font-size:11px;padding:5px 12px;color:var(--muted)}.chip.active{background:var(--green);border-color:var(--green);color:white}.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.spec-card{background:var(--card);border:1px solid var(--line);padding:24px;border-radius:5px;display:flex;flex-direction:column;min-height:220px;transition:border-color .15s}.spec-card:hover{border-color:#90a393}.card-kicker{display:flex;gap:10px;align-items:center;justify-content:space-between;color:var(--muted);font-size:10px;text-transform:uppercase;letter-spacing:.8px;margin-bottom:18px}.spec-card h3{font:26px/1.15 var(--serif);margin-bottom:12px}.spec-card p{color:var(--muted);font-size:13px;margin-bottom:17px}.tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:18px}.card-bottom{display:flex;justify-content:space-between;gap:10px;margin-top:auto;border-top:1px solid var(--line);padding-top:14px;font-size:11px;color:var(--muted)}.load-more{display:block;margin:28px auto}.empty{padding:45px;text-align:center;border:1px dashed var(--line);border-radius:5px;grid-column:1/-1}.empty h3{font:25px var(--serif)}.empty p{max-width:440px;margin:0 auto 20px;color:var(--muted);font-size:13px}.page-head{padding:42px 0 30px;border-bottom:1px solid var(--line);margin-bottom:30px}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:24px}.breadcrumb span{padding:0 8px}.page-head h1{font-size:43px;letter-spacing:-1px;max-width:850px;margin:16px 0}.page-summary{max-width:750px;color:var(--muted);font-size:16px}.meta{display:flex;flex-wrap:wrap;gap:16px;font-size:11px;color:var(--muted);margin:18px 0}.meta code{font-size:10px}.page-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}.tabs{display:flex;gap:25px;border-bottom:1px solid var(--line);margin-bottom:28px;overflow:auto}.tab{border:0;border-bottom:2px solid transparent;background:none;padding:14px 0;font-size:13px;white-space:nowrap;color:var(--muted)}.tab.active{color:var(--green);border-bottom-color:var(--green)}.spec-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:45px;padding-bottom:55px}.spec-text{white-space:pre-wrap;overflow-wrap:anywhere;font:15px/1.85 system-ui;margin:0;color:#34403a}.side-panel{border:1px solid var(--line);border-radius:4px;padding:20px;height:fit-content;background:var(--card)}.side-panel h3{font-size:12px;margin-bottom:16px}.side-panel p{font-size:12px;color:var(--muted)}.side-panel .hash{font:10px/1.7 monospace;overflow-wrap:anywhere}.side-panel hr{border:0;border-top:1px solid var(--line);margin:18px 0}.side-panel a{font-size:12px;display:block;margin-bottom:10px}.code-card,.comment{background:var(--card);border:1px solid var(--line);border-radius:5px;margin-bottom:18px}.code-head{padding:18px 22px;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px}.code-head h3{margin:0 0 5px;font-size:15px}.code-meta{font-size:11px;color:var(--muted)}pre.code{margin:0;padding:22px;background:#f0f2eb;overflow:auto;font:12px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;max-height:520px}.code-notes{padding:18px 22px;white-space:pre-wrap;font-size:13px;margin:0}.contribution-bottom{padding:12px 22px;display:flex;justify-content:space-between;font-size:11px;color:var(--muted)}.text-button{background:none;border:0;color:var(--muted);padding:0;font-size:11px;text-decoration:underline}.comment{padding:22px}.comment p{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.comment-meta{display:flex;justify-content:space-between;color:var(--muted);font-size:11px;margin-bottom:12px}.form-page{max-width:820px;margin:45px auto 70px}.form-page h1{font-size:42px}.form-page>p{color:var(--muted)}.form-box{background:var(--card);border:1px solid var(--line);padding:32px;border-radius:5px;margin-top:30px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.editor{font:13px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;min-height:330px;tab-size:2}.form-footer{border-top:1px solid var(--line);padding-top:22px;display:flex;align-items:center;justify-content:space-between;gap:20px}.form-footer p{font-size:12px;color:var(--muted);margin:0;max-width:420px}.form-error{color:#9b372d;font-size:13px}.callout{padding:16px 20px;background:var(--wash);border-left:3px solid #548b73;font-size:13px;margin:22px 0}.prose{max-width:760px;padding:50px 0 65px;margin:auto}.prose h1{font-size:45px}.prose h2{margin-top:36px}.prose p,.prose li{color:#56635b}.prose pre{padding:20px;background:var(--wash);overflow:auto;font-size:12px}.prose code{font-size:12px}.prose table{border-collapse:collapse;width:100%;font-size:12px}.prose td,.prose th{border-bottom:1px solid var(--line);text-align:left;padding:12px 8px}.tree-list{list-style:none;padding-left:24px;border-left:1px solid #c0cbbf;margin:16px 0}.tree-node{padding:14px 18px;background:var(--card);border:1px solid var(--line);border-radius:4px;max-width:650px}.tree-node.current{border-color:var(--green);background:var(--wash)}.tree-node small{display:block;font-size:11px}.tree-root{list-style:none;padding:0}.diff{font:12px/1.7 ui-monospace,SFMono-Regular,Consolas,monospace;background:var(--card);border:1px solid var(--line);border-radius:4px;overflow:auto}.diff-line{display:flex;min-width:max-content;padding:1px 12px;white-space:pre}.diff-line.added{background:#e3f1e2;color:#255c31}.diff-line.removed{background:#f7e5df;color:#8b3a2b}.diff-symbol{user-select:none;display:inline-block;width:25px}.loading{padding:70px 0;color:var(--muted)}.notice{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--green);color:white;padding:12px 22px;border-radius:5px;max-width:90vw;box-shadow:0 5px 25px #0002;font-size:13px;z-index:20}.notice.error{background:#87382d}.key-reveal{padding:20px;background:var(--wash);overflow-wrap:anywhere}.key-reveal code{font-size:12px;user-select:all}.key-row{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:20px 0;border-bottom:1px solid var(--line)}.key-row p{margin:0}.icon-button{background:none;border:none;font-size:28px;color:var(--muted)}dialog{max-width:540px;width:calc(100% - 40px);border:1px solid var(--line);border-radius:8px;padding:28px;background:var(--card);color:var(--ink)}dialog::backdrop{background:#172b2466}dialog p{font-size:13px;color:var(--muted)}footer{max-width:1140px;margin:auto;padding:25px 30px;border-top:1px solid var(--line);display:flex;align-items:center;gap:30px;font-size:10px;color:var(--muted)}footer .footer-brand{font:20px var(--serif);color:var(--ink)}footer div{margin-left:auto;display:flex;gap:18px}.noscript{padding:30px}.spaced{margin:30px 0}.flex{display:flex;align-items:center;gap:12px}.hidden{display:none}.hash-small{overflow-wrap:anywhere}
.toolbar .search{margin:0}.toolbar{align-items:flex-start}.toolbar select{padding-top:12px;padding-bottom:12px}
@media(max-width:850px){.header-inner{gap:20px}.brand-note{display:none}.hero{gap:30px}.spec-layout{grid-template-columns:1fr}.side-panel{display:none}.stats{gap:10px}.header-inner nav{gap:15px}.tree-list{padding-left:14px}.hero h1{font-size:45px}}
@media(max-width:600px){.header-inner{padding:14px 20px;flex-wrap:wrap;min-height:75px}.brand{font-size:24px}.header-inner nav{order:3;width:100%;margin:0;justify-content:space-between;border-top:1px solid var(--line);padding-top:12px}.identity{margin-left:auto;gap:8px}.identity .button{padding:7px 10px;font-size:11px}main{padding:0 20px}.hero{grid-template-columns:1fr;padding:38px 0;gap:30px}.hero h1{font-size:43px}.hero p{font-size:15px}.example{max-width:420px}.grid{grid-template-columns:1fr}.section-head{align-items:flex-start;flex-wrap:wrap}.toolbar{flex-wrap:wrap}.search{flex-basis:100%}.toolbar select{flex:1;max-width:none}.page-head{padding-top:28px}.page-head h1{font-size:34px}.form-box{padding:20px}.form-grid{grid-template-columns:1fr;gap:0}.form-footer{align-items:flex-start;flex-direction:column}.tabs{gap:22px}.form-page h1,.prose h1{font-size:35px}.code-head{padding:16px;flex-wrap:wrap}pre.code{padding:16px}.spec-card{padding:20px;min-height:200px}.meta{gap:10px}.stats{width:100%}.tree-list{padding-left:10px}.tree-node{padding:10px}footer{padding:25px 20px;flex-wrap:wrap;gap:15px}footer div{margin:0;width:100%}footer>span{flex:1}.key-row{align-items:flex-start}.page-actions .button{font-size:12px}}

/* A compact reading interface for specifications. */
.example-benefit{border-left:3px solid var(--green);padding:4px 18px;margin:24px 0}.example-benefit p{margin:0}.example-comparison{margin:28px 0}.example-comparison table{margin:12px 0 16px}.example-comparison td:nth-child(2){overflow-wrap:anywhere}.example-comparison tbody tr:last-child{background:var(--wash)}.example-comparison tbody tr:last-child td{font-weight:600}.example-comparison>p:last-child{font-size:13px}
.prose.protocol-example{max-width:840px}.protocol-example .example-intro{font-size:17px;line-height:1.7}.protocol-example .example-sample-note{font-size:12px;color:var(--muted)}.example-step{margin-top:32px;padding-top:12px;border-top:1px solid var(--line)}.example-step h2{margin-top:18px}.example-record,.example-change,.example-documentation{padding:20px;border:1px solid var(--line);margin:20px 0}.example-record h3,.example-documentation h3{font-size:19px}.example-record p:last-child,.example-change p:last-child,.example-documentation p:last-child{margin-bottom:0}.example-change{border-left:3px solid var(--green)}.example-api{margin:12px 0;font-size:13px}.example-api summary{cursor:pointer;color:var(--green)}.example-api pre{max-height:380px;overflow:auto}.example-lineage{display:grid;grid-template-columns:1fr 24px 1fr;gap:16px;align-items:center;margin:24px 0}.example-lineage div{display:flex;flex-direction:column;gap:8px}.example-lineage span{font-size:12px;color:var(--muted)}.example-lineage code{overflow-wrap:anywhere}.example-lineage .example-arrow{font-size:22px}.protocol-example .example-takeaway{margin-top:32px;font-size:19px;color:var(--ink);font-weight:600}.protocol-example .actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap}@media(max-width:600px){.example-lineage{grid-template-columns:1fr;gap:12px}.example-lineage .example-arrow{transform:rotate(90deg);width:20px}.example-record,.example-change,.example-documentation{padding:16px}}
[hidden]{display:none!important}
.identity .signin-link{font-size:13px;text-decoration:none;color:var(--green)}.identity .signin-link:hover{text-decoration:underline}
h1{font-size:clamp(29px,3.5vw,40px);font-weight:650;letter-spacing:-1px;line-height:1.2}h2{font-size:23px;font-weight:600;letter-spacing:-.4px}.header-inner{min-height:70px;gap:30px}.brand{font-weight:700;font-size:23px;letter-spacing:-.6px}.brand img{width:23px;height:23px}nav a{font-size:14px}.button,input,textarea,select,.code-card,.comment,.form-box,.tree-node,.diff,dialog,.notice{border-radius:2px}.button{font-weight:550}.hero{padding:44px 0 36px;grid-template-columns:2fr 1fr;gap:64px;align-items:start}.hero h1{margin-bottom:15px}.hero p{font-size:16px;line-height:1.65}.hero .actions{align-items:center;font-size:14px}.home-note{border-left:1px solid var(--line);padding-left:24px;margin-top:4px}.home-note h2{font-size:15px;letter-spacing:0;line-height:1.4;margin-bottom:12px}.home-note p{font-size:13px;margin-bottom:12px}.eyebrow{text-transform:none;letter-spacing:0;font-size:12px;font-weight:500;color:var(--muted);margin-bottom:12px}.collection{padding-top:24px}.chips{gap:14px;margin-bottom:18px}.chip{border:0;border-radius:0;padding:3px 0;font-size:12px}.chip.active{background:transparent;color:var(--ink);border-bottom:2px solid var(--green)}.grid{display:block}.spec-card{border:0;border-top:1px solid var(--line);padding:20px 0;min-height:0;border-radius:0;position:relative}.spec-card:hover{border-color:var(--line)}.spec-card h3{font:600 21px/1.35 var(--serif);margin-bottom:7px}.card-kicker{letter-spacing:0;text-transform:none;margin-bottom:8px;font-size:11px}.spec-card p{max-width:780px;margin-bottom:10px}.tags{margin-bottom:10px}.tag{border:0;padding:0 8px 0 0;font-size:11px;color:var(--green)}.card-bottom{border:0;padding:0;font-size:12px;justify-content:flex-start;gap:24px}.empty{text-align:left;border:0;border-top:1px solid var(--line);padding:28px 0}.empty h3{font:600 19px var(--serif)}.empty p{margin:0 0 18px;max-width:550px}.page-head h1,.form-page h1,.prose h1{font-size:34px;font-weight:650}.prose h2{font-size:22px}.prose p,.prose li{color:var(--muted)}.prose code{color:var(--ink)}.example-editor{display:grid;grid-template-columns:1fr 1fr;gap:20px}.example-editor textarea{font:13px/1.6 ui-monospace,Consolas,monospace}.example-page pre{white-space:pre-wrap;overflow-wrap:anywhere}.form-box{box-shadow:none}.search::before{content:none}.search input{padding-left:12px}.notice{box-shadow:none}footer{font-size:12px;gap:24px}footer .footer-brand{font:700 16px var(--serif)}
@media(max-width:850px){.hero{gap:30px}.hero h1{font-size:34px}}
@media(max-width:600px){.hero{grid-template-columns:1fr;gap:24px;padding:30px 0}.hero h1{font-size:30px}.home-note{border-left:0;border-top:1px solid var(--line);padding:18px 0 0}.hero .actions{flex-wrap:wrap;gap:16px}.spec-card{padding:18px 0}.card-bottom{gap:12px;flex-wrap:wrap}.example-editor{grid-template-columns:1fr;gap:0}.prose h1,.form-page h1,.page-head h1{font-size:30px}.header-inner{gap:12px}footer>span{flex-basis:70%}}