/* The Cryptic Bureau — Archive identity. Local to the Clue Library. */
@font-face{font-family:"Bureau Cormorant";src:url("assets/cormorant-garamond-600.ttf") format("truetype");font-weight:600;font-style:normal;font-display:swap}
@font-face{font-family:"Bureau Source Sans";src:url("assets/source-sans-3-400.ttf") format("truetype");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Bureau Source Sans";src:url("assets/source-sans-3-600.ttf") format("truetype");font-weight:600;font-style:normal;font-display:swap}
:root{--burgundy:#542C3B;--ivory:#F4EBDD;--copper:#B87650;--ink:#3b2730;--muted:#69545c;--card:#fcf8f1;--wash:#eaded3;--border:#bca7a5;--line:#d7c6bf;--serif:"Bureau Cormorant",Georgia,serif;--sans:"Bureau Source Sans",Arial,sans-serif;--mono:var(--sans)}
*,*::before,*::after{box-sizing:border-box}
body{margin:0;background:var(--ivory);color:var(--ink);font-family:var(--sans);font-size:16px;line-height:1.5;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%}a{color:inherit;text-underline-offset:3px}:focus-visible{outline:2px solid var(--burgundy);outline-offset:4px}
h1,h2,h3,p{margin-top:0}h1,h2,h3{font-family:var(--serif);font-weight:600;color:var(--burgundy);line-height:1.12;letter-spacing:-.015em}h2{margin-bottom:16px}h3{margin-bottom:12px}
.skip-link{position:absolute;left:16px;top:-100px;z-index:20;background:var(--card);padding:10px 16px}.skip-link:focus{top:12px}
.eyebrow{margin:0 0 20px;color:var(--burgundy);text-transform:uppercase;letter-spacing:.15em;font:600 11px var(--sans)}
.site-header{background:var(--ivory);border-top:4px solid var(--burgundy);border-bottom:1px solid var(--line)}
.brand{display:inline-flex;align-items:center;gap:16px;text-decoration:none;flex-shrink:0;color:var(--burgundy)}
.bureau-symbol{width:88px;height:57px;flex-shrink:0;mix-blend-mode:multiply}
.bureau-wordmark{display:block;font-family:var(--serif);line-height:1;letter-spacing:.06em;text-transform:uppercase}.bureau-wordmark>span{display:block;font-size:13px;letter-spacing:.2em;margin-bottom:5px}.bureau-wordmark strong{font-size:28px;font-weight:600}
[hidden]{display:none!important}
.envelope-filters{grid-column:1/-1;margin-top:18px;border-top:1px solid var(--line);padding-top:14px}.envelope-filters summary{font-size:13px;font-weight:600;cursor:pointer}.variety-panel{background:var(--wash);border:1px solid var(--border);padding:20px;margin-bottom:22px}.variety-panel h3{font-size:24px;margin:0 0 12px}.variety-panel p,.envelope-note{font-size:13px;line-height:1.6}.variety-panel .chips{margin:14px 0}.action-sequence{padding:16px;background:var(--wash);line-height:1.8;font-weight:600}.envelope-note{padding:16px;border-left:3px solid var(--copper);background:var(--wash)}@media(min-width:761px){.filters{max-height:calc(100vh - 40px);overflow-y:auto;padding-right:8px}}@media(max-width:760px){.envelope-filters[open]{display:grid;grid-template-columns:1fr 1fr;gap:0 12px}.envelope-filters summary{grid-column:1/-1}}
button,input,select,textarea{font:inherit}button{cursor:pointer}button,a,input,select{touch-action:manipulation}button{color:inherit}button:disabled{opacity:.5;cursor:default}
.studio-width{width:min(1400px,calc(100% - 64px));margin-inline:auto}.studio-header{min-height:85px;display:flex;align-items:center;gap:38px}.studio-label{font-size:13px;color:var(--muted)}.studio-label span{padding-inline:12px;color:var(--border)}.preview-label{margin-left:auto;font:10px var(--mono);color:var(--muted);background:var(--wash);padding:8px 10px}
.library-intro{display:flex;justify-content:space-between;align-items:end;gap:40px;padding:47px 0 35px}.library-intro .eyebrow{margin-bottom:16px}.library-intro h1{font-size:clamp(36px,4.5vw,62px);margin:0;line-height:1.08;white-space:normal}.library-intro h1 em{font-style:normal}.intro-note{max-width:360px;color:var(--muted);font-size:16px;padding-bottom:2px}.intro-note p{margin-bottom:15px}.intro-note .intro-meta{font:10px var(--mono);text-transform:uppercase;letter-spacing:.06em;margin:0;color:var(--muted)}
.mode-nav{display:flex;gap:26px;border-bottom:1px solid var(--line);margin-bottom:28px}.mode-nav button{border:0;background:transparent;padding:16px 0 14px;font-weight:600;font-size:14px;border-bottom:3px solid transparent}.mode-nav button[aria-pressed=true]{border-color:var(--burgundy);color:var(--burgundy)}.mode-nav .saved-tab{margin-left:auto}.saved-tab span{font:11px var(--mono);background:var(--wash);border-radius:12px;padding:3px 7px;margin-left:5px}
.finder-layout{display:grid;grid-template-columns:235px minmax(0,1fr);gap:36px}.filters{align-self:start;position:sticky;top:20px}.filter-heading{display:flex;align-items:start;justify-content:space-between;gap:10px;margin-bottom:8px}.filter-heading h2{font:600 14px var(--sans);line-height:1.4;letter-spacing:0;max-width:140px}.quiet{border:0;background:none;text-decoration:underline;font-size:12px;padding:0}.filters label{display:block;font-size:12px;font-weight:600;margin:16px 0 7px}.filters input,.filters select{width:100%;border:1px solid var(--border);background:var(--card);border-radius:3px;padding:10px;font-size:13px;min-height:43px;color:var(--ink)}.filter-note{font-size:11px;color:var(--muted);line-height:1.6;margin:14px 0}.filter-tip{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}.filter-tip .eyebrow{font-size:9px;margin-bottom:10px}.filter-tip p{font-size:13px;color:var(--muted)}
.results-heading{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:0 0 18px}.results-heading h2{font-size:25px;margin:0 0 6px}.results-heading p{font-size:12px;color:var(--muted);margin:0}.techniques{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}.technique{background:var(--card);border:1px solid var(--line);display:flex;flex-direction:column;min-height:238px;padding:19px;position:relative;transition:border-color .15s,box-shadow .15s}.technique:hover{border-color:var(--copper);box-shadow:0 4px 14px #542c3b0d}.card-kicker{font:9px var(--mono);text-transform:uppercase;letter-spacing:.06em;color:var(--burgundy);margin-bottom:14px}.technique h3{font-size:21px;line-height:1.2;overflow-wrap:anywhere;margin-bottom:11px}.technique h3 button{font:inherit;letter-spacing:inherit;background:none;border:0;padding:0;text-align:left}.technique h3 button:hover{text-decoration:underline;text-underline-offset:4px}.technique .description{font-size:13px;line-height:1.55;color:var(--muted);margin-bottom:14px;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.chips{display:flex;flex-wrap:wrap;gap:5px;margin-top:auto;margin-bottom:17px}.chip{font-size:10px;padding:4px 7px;background:var(--wash);border:1px solid var(--line);line-height:1.2;color:var(--muted)}.card-bottom{border-top:1px solid var(--line);padding-top:12px;display:flex;justify-content:space-between;align-items:center;gap:5px}.open-card{border:0;background:none;color:var(--burgundy);font-weight:600;font-size:12px;padding:4px 0}.save{border:0;background:transparent;font-size:12px;padding:4px;color:var(--muted)}.save[aria-pressed=true]{color:var(--burgundy);font-weight:600}.secondary{background:var(--card);border:1px solid var(--border);border-radius:3px;padding:9px 12px;font-size:12px}.secondary:hover{background:var(--wash)}.empty-state{background:var(--card);border:1px dashed var(--border);padding:40px 25px;text-align:center}.empty-state h3{font-size:24px}.empty-state p{color:var(--muted);font-size:14px}
.section-lead{display:flex;align-items:end;justify-content:space-between;gap:35px;margin-bottom:27px}.section-lead .eyebrow{font-size:10px;margin-bottom:12px}.section-lead h2{font-size:32px;margin:0}.section-lead>p{max-width:400px;font-size:14px;color:var(--muted);margin:0}.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.inspiration-card{background:var(--card);border:1px solid var(--line);overflow:hidden}.illustration{background:var(--wash);padding:14px;color:var(--burgundy)}.illustration svg{width:100%;display:block;height:auto}.illustration svg text{font-family:var(--sans);fill:currentColor}.gallery-copy{padding:21px}.gallery-copy .card-kicker{margin-bottom:11px}.gallery-copy h3{font-size:24px;margin-bottom:10px}.gallery-copy p{font-size:14px;color:var(--muted);min-height:44px;margin-bottom:16px}.gallery-copy .open-card{font-size:13px}.diagram-caption{font-size:11px;color:var(--muted);margin-top:8px;text-align:center}
.design-path{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));background:var(--burgundy);color:var(--ivory);margin-bottom:28px}.design-path>div{padding:28px;border-right:1px solid #f4ebdd33}.design-path span{font:10px var(--mono);color:var(--ivory);letter-spacing:.1em}.design-path h3{font-size:23px;margin:16px 0 12px}.design-path p{font-size:14px;color:#e8d5cb;margin:0}.notes-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.notes-grid article{padding:23px;background:var(--card);border:1px solid var(--line)}.notes-grid h3{font-size:22px;margin-bottom:12px}.notes-grid p{font-size:14px;color:var(--muted);margin:0}.method-note{border-top:1px solid var(--line);padding:17px 0;margin-top:20px;font-size:14px;max-width:900px}.method-note summary{cursor:pointer;font-weight:600}.method-note p{margin:16px 0;color:var(--muted)}.method-note ul{padding-left:20px}.method-note li{margin:10px 0}
.library-footer{display:flex;justify-content:space-between;gap:24px;padding-block:27px;border-top:1px solid var(--line);margin-top:48px;font-size:11px;color:var(--muted)}
dialog{width:min(720px,calc(100% - 32px));max-height:calc(100dvh - 40px);border:1px solid var(--border);background:var(--card);color:var(--ink);padding:28px;box-shadow:0 24px 80px #542c3b29;overflow:auto}dialog::backdrop{background:#301923ad}.dialog-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:22px}.dialog-top .eyebrow{margin:0;font-size:10px}#detail-title{font-size:34px;margin:8px 0 18px}#detail-body>p{font-size:15px;color:var(--muted);line-height:1.65}.detail-example{background:var(--wash);border-left:3px solid var(--copper);padding:20px;margin:22px 0}.detail-example h3{font:600 13px var(--sans);margin:0 0 10px}.detail-example p{font-size:14px;margin:0;white-space:pre-line}.detail-meta{display:grid;grid-template-columns:100px 1fr;font-size:13px;gap:12px;margin:22px 0}.detail-meta dt{color:var(--muted)}.detail-meta dd{margin:0}.detail-warning{padding:14px 17px;background:var(--wash);font-size:13px}.detail-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}.detail-actions .save{border:1px solid var(--border);padding:9px 12px;border-radius:3px;background:var(--card)}.evidence{font-size:11px!important;color:var(--muted)!important}.brief-fallback{display:block;width:100%;min-height:180px;background:white;border:1px solid var(--border);margin-top:15px;font-size:12px;padding:10px}.toast{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);z-index:5;background:var(--burgundy);color:var(--ivory);box-shadow:0 4px 20px #542c3b26;padding:13px 19px;font-size:13px;max-width:calc(100% - 30px)}
@media(min-width:1450px){.technique{min-height:230px}}
@media(max-width:1120px){.techniques,.gallery{grid-template-columns:repeat(2,minmax(0,1fr))}.studio-label{display:none}.finder-layout{gap:25px;grid-template-columns:215px minmax(0,1fr)}}
@media(max-width:760px){.studio-width{width:calc(100% - 32px)}.studio-header{min-height:77px;gap:10px}.studio-header .brand{margin:0;font-size:14px}.preview-label{max-width:145px;font-size:9px;line-height:1.5}.library-intro{display:block;padding:30px 0 25px}.library-intro h1{font-size:42px}.intro-note{margin-top:20px;max-width:480px;font-size:14px}.intro-note p{margin-bottom:10px}.mode-nav{gap:20px;overflow-x:auto;white-space:nowrap;margin-bottom:22px}.mode-nav button{font-size:13px;flex-shrink:0}.mode-nav .saved-tab{margin-left:0}.finder-layout{display:block}.filters{position:static;display:grid;grid-template-columns:1fr 1fr;gap:0 12px;margin-bottom:25px}.filter-heading{grid-column:1/-1;margin:0}.filter-heading h2{max-width:none;margin:0}.filters label{grid-column:1/-1;margin:12px 0 6px}.filters input,.filters select{grid-column:1/-1}.filter-note{grid-column:1/-1;margin-bottom:0}.filter-tip{display:none}.section-lead{display:block}.section-lead>p{margin-top:15px}.design-path,.notes-grid{grid-template-columns:1fr}.design-path>div{border-right:0;border-bottom:1px solid #f4ebdd33}.library-footer{display:block;line-height:1.7}.library-footer span{display:block}.technique{padding:17px}.section-lead h2{font-size:29px}.dialog-top{margin-bottom:15px}dialog{padding:20px}#detail-title{font-size:29px}.detail-meta{grid-template-columns:85px 1fr}}
@media(max-width:480px){.techniques,.gallery{grid-template-columns:1fr}.technique{min-height:205px}.library-intro h1{font-size:37px}.results-heading h2{font-size:23px}.gallery-copy p{min-height:0}}
@media(prefers-reduced-motion:reduce){.technique{transition:none}}
@media(max-width:760px){.filters label{grid-column:1;margin:12px 0 0;align-self:center}.filters select{grid-column:2;margin-top:10px}.filters label[for="search"],.filters input{grid-column:1/-1}.filters input{margin-top:7px}}
@media(max-width:480px){.mode-nav{display:grid;grid-template-columns:1fr 1fr;gap:0 20px;overflow:visible}.mode-nav button{text-align:left;padding:12px 0}.mode-nav .saved-tab{margin:0}}
.technique-brief{margin:26px 0;border-top:1px solid var(--line);padding-top:23px}.technique-brief>h3{font-size:25px}.technique-brief details{border-top:1px solid var(--line);padding:13px 0;font-size:14px}.technique-brief summary{cursor:pointer;font-weight:600}.technique-brief details p{margin:12px 0 2px;color:var(--muted);line-height:1.65}.coverage-summary{background:var(--burgundy);color:var(--ivory);padding:22px;margin-bottom:24px;font-size:16px}.mode-nav{gap:22px}@media(max-width:760px){.mode-nav{gap:0 16px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));white-space:normal}.mode-nav button{font-size:12px;text-align:left}.mode-nav .saved-tab{margin-left:0}}@media(max-width:480px){.mode-nav{grid-template-columns:1fr 1fr}}

.envelope-pool{width:100%;border-collapse:collapse;font-size:14px;margin:18px 0}.envelope-pool th,.envelope-pool td{text-align:left;vertical-align:top;border-bottom:1px solid var(--line);padding:12px 10px;line-height:1.7}.envelope-pool th{background:var(--wash)}.envelope-pool td:first-child{width:26%;font-weight:600}

@media(max-width:760px){.envelope-filters[open]{display:block}.envelope-filters label{margin-top:14px}.envelope-filters select{width:100%;margin-top:7px}}

/* Archive typography and restrained copper details. */
.studio-header{min-height:108px}.studio-label{padding-left:26px;border-left:1px solid var(--line)}
.preview-label{font-size:11px;letter-spacing:.06em;text-transform:uppercase;background:transparent;border:1px solid var(--border)}
.library-intro{padding:44px 0 32px}.library-intro h1{font-size:clamp(44px,4.7vw,68px);line-height:1.02;letter-spacing:-.025em}.library-intro h1 em{font-style:normal;color:var(--burgundy)}
.mode-nav button[aria-pressed=true]{border-color:var(--copper)}.mode-nav button{font-size:15px}.intro-meta,.card-kicker{font-weight:600}
.technique h3{font-size:25px}.technique .description{font-size:14px}.chip{font-size:11px}.card-kicker{font-size:10px;letter-spacing:.1em}.open-card,.save,.secondary{font-size:13px}
.design-path h3{color:var(--ivory)}.design-path span{border-bottom:1px solid var(--copper);padding-bottom:6px}.design-path{border-top:3px solid var(--copper)}
.filters input,.filters select{font-size:14px}.filter-note,.evidence{font-size:12px!important}.method-note{line-height:1.65}.envelope-pool th{color:var(--burgundy)}
::selection{background:var(--burgundy);color:var(--ivory)}
@media(max-width:760px){.studio-header{min-height:100px;flex-wrap:wrap;gap:8px 14px;padding-block:14px}.studio-header .brand{margin:0}.bureau-symbol{width:67px;height:44px}.bureau-wordmark strong{font-size:24px}.bureau-wordmark>span{font-size:11px}.preview-label{font-size:10px;margin-left:auto}.library-intro h1{font-size:46px}.technique h3{font-size:25px}}
@media(max-width:480px){.studio-header{justify-content:space-between}.studio-header .brand{gap:11px}.bureau-symbol{width:58px;height:38px}.bureau-wordmark strong{font-size:22px}.preview-label{padding:5px 7px;font-size:9px}.library-intro h1{font-size:42px}.mode-nav button{font-size:14px}}

/* Dark Archive: retain warm paper diagrams and the approved logo's original colours. */
:root{color-scheme:light}
:root[data-theme="dark"]{color-scheme:dark;--burgundy:#e7bdc9;--ivory:#20191d;--ink:#f4ebdd;--muted:#c9b9b9;--card:#2c2329;--wash:#382b32;--border:#8f767e;--line:#604b55;--copper:#d29a75}
.theme-toggle{margin-left:auto;white-space:nowrap;min-height:42px}.theme-toggle[aria-pressed="true"]{background:var(--wash);border-color:var(--copper);color:var(--ink)}
[data-theme="dark"] .site-header{border-top-color:var(--copper)}
[data-theme="dark"] .bureau-symbol{mix-blend-mode:normal;background:#f4ebdd;border-radius:3px}
[data-theme="dark"] .design-path,[data-theme="dark"] .coverage-summary,[data-theme="dark"] .toast{background:#542C3B;color:#F4EBDD}
[data-theme="dark"] .design-path h3,[data-theme="dark"] .design-path span{color:#F4EBDD}
[data-theme="dark"] .illustration{background:#eaded3;color:#542C3B}
[data-theme="dark"] .brief-fallback{background:var(--card);color:var(--ink)}
[data-theme="dark"] dialog::backdrop{background:#100a0ed9}
@media(max-width:480px){.theme-toggle{min-height:38px;padding:7px 10px;font-size:12px}.studio-header{gap:12px}}

[data-theme="dark"] .diagram-caption{color:#69545c}