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@media(max-width:600px){.container{padding-inline:22px}.hero{padding-top:40px}.hero-content{display:flex;flex-direction:column;gap:0;min-height:0;align-items:stretch}.hero h1{font-size:clamp(3.15rem,12vw,4.5rem);margin-bottom:24px}.hero .eyebrow{font-size:.6rem;margin-bottom:24px}.hero .lead-copy{max-width:330px;font-size:.88rem}.hero-actions{gap:21px;flex-wrap:wrap}.hero-author{margin-top:27px}.hero-art{height:380px;align-self:auto;margin-top:15px}.hero-art svg{width:105%;height:100%;transform:translateX(0)}.hero-annotation{top:20px;right:0;font-size:.53rem}.sketch-note{bottom:10px;left:8px;font-size:.88rem;max-width:190px}.hero-bottom{padding:17px 0;gap:13px}.hero-bottom span:last-child{display:none}.hero-bottom span{gap:7px}.section{padding-block:62px}.eyebrow{font-size:.6rem;margin-bottom:21px}.section-heading{display:block;margin-bottom:30px}.section-heading>p{margin-top:22px}.section-heading .text-link{margin-top:22px}.intro-grid,.principle-grid,.quote-split,.paper-invite,.lesson-story{grid-template-columns:1fr;gap:42px}.photo-frame{max-width:92%;margin:0 4%}.intro-copy h2{font-size:2.8rem}.intro-copy p{font-size:.9rem}.about-strip{margin-top:45px;grid-template-columns:1fr}.about-item{padding:17px 0;border-right:0;border-bottom:1px solid var(--line)}.about-item strong{font-size:.95rem;margin-bottom:3px}.about-item span{font-size:.75rem}.about-item:last-child{border-bottom:0}.principle-grid{gap:25px}.principle-grid h2{font-size:2.6rem}.principle{gap:20px;padding-block:20px}.project-grid{grid-template-columns:1fr 1fr;gap:28px 17px}.project-image{aspect-ratio:1.02}.project-image svg{width:90%;height:85%}.project-card h3{font-size:1.16rem}.project-card p{font-size:.76rem;line-height:1.55}.project-meta{font-size:.54rem;gap:7px;margin:14px 0 9px;flex-wrap:wrap}.project-index{font-size:.53rem!important;left:11px!important;top:10px!important}.project-image .project-arrow{width:26px;height:26px;bottom:10px;right:10px}.poem{font-size:1.55rem}.wood-photo{max-height:300px}.gallery-grid{gap:12px}.gallery-item:first-child img{height:300px}.gallery-item img{height:175px}.gallery-caption{font-size:.65rem;padding:28px 12px 11px}.paper-scene{height:240px;grid-row:1}.paper-invite{gap:20px}.footer-invite{padding:45px 0;align-items:flex-start;flex-direction:column;gap:25px}.footer-invite h2{font-size:2.3rem}.footer-inner{align-items:flex-start;flex-direction:column;gap:22px}.footer-links{gap:20px;flex-wrap:wrap}.page-hero{padding:35px 0}.page-hero h1{font-size:3rem}.page-hero .lead-copy{font-size:.9rem}.breadcrumb-nav{margin-bottom:27px}.page-number{font-size:2.8rem}.filter-row{gap:7px}.filter-button{font-size:.68rem;padding:7px 12px}.facts-grid{grid-template-columns:1fr}.fact{padding:28px 0}.fact h2{font-size:1.9rem}.quiz{padding:27px;margin-top:40px}.quiz-options{flex-direction:column}.quiz h2{font-size:1.7rem}.model{grid-template-columns:1fr;gap:25px;padding-bottom:40px}.model-visual{min-height:250px}.model h2{font-size:2.2rem}.model-list{gap:40px}.article-aside{gap:20px}.article-title{font-size:2.1rem}.article-graphic{min-height:230px}.article-graphic svg{height:240px;width:90%}.step{grid-template-columns:32px 1fr;gap:13px}.step h3{font-size:1.25rem}.step p{font-size:.85rem}.help-item{grid-template-columns:30px 1fr;gap:18px}.help-number{font-size:2rem}.help-item h2{font-size:1.8rem}.help-item .note-box{padding:20px}.resource h2{font-size:1.25rem}.resource-icon{width:34px;height:45px}.resource{gap:14px;grid-template-columns:35px 1fr}.resource p{font-size:.8rem}.timeline{gap:20px}.timeline-item p{font-size:.72rem}.gallery-dialog{max-width:96vw}.section .note-box{padding:23px}.back-top{right:13px;bottom:15px;width:35px;height:35px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.js-motion .reveal:not(.in-view){opacity:1;transform:none}}
@media print{body{background:white;color:#111;font-size:12pt}.site-header,.site-footer,.footer-invite,.back-top,.filter-row,.button,.hero-art,.gallery-dialog{display:none!important}.section{padding:20px 0}.container{max-width:none}.article-layout{display:block}.article-aside{display:block;position:static}.article-graphic{max-height:240px;min-height:0}.reveal{opacity:1!important;transform:none!important}.step{break-inside:avoid}.note-box{background:white;border:1px solid #aaa}.print-only{display:block}.page-hero h1{font-size:28pt}.page-hero{padding:15px 0}.breadcrumb-nav{display:none}a{text-decoration:none;color:inherit}.source-line{font-size:9pt}}

.menu-toggle{white-space:nowrap}

/* Acceptance pass: readable labels, explicit project formats and archive reading. */
:root{--muted:#586354}
.nav-main{font-size:.875rem;gap:22px}.brand-text small{font-size:.65rem;letter-spacing:.1em}
.small-note{font-size:.875rem}.eyebrow{font-size:.75rem;letter-spacing:.12em}
.project-meta{font-size:.8125rem;line-height:1.5;letter-spacing:.02em;text-transform:none;flex-wrap:wrap;gap:6px 14px}
.project-index{font-size:.75rem;opacity:.85}.project-card p{font-size:.9375rem;line-height:1.65}.project-card h3{line-height:1.25}
.project-tags{display:flex;align-items:center;flex-wrap:wrap;gap:7px 12px;margin:12px 0;font-size:.8125rem;line-height:1.5}
.project-badge{display:inline-block;border:1px solid #b7bfaa;border-radius:3px;padding:4px 8px;background:#fcfaf5;color:var(--green)}
.project-badge.recommended{background:var(--green);color:var(--paper);border-color:var(--green)}.project-level{color:var(--muted)}
.article-tags{margin:0 0 20px}.article-layout .lead-copy{font-size:1rem}.step p{font-size:1rem}.material-list,.tool-list{font-size:.9375rem}
.material-list label{min-height:36px;align-items:center}.material-list input{min-width:18px;min-height:18px;margin-top:0;flex-shrink:0}
.aside-label,.source-line,.breadcrumb-nav{font-size:.875rem;letter-spacing:.02em}.breadcrumb-nav{flex-wrap:wrap;gap:8px 12px}.breadcrumb-nav a{text-decoration:underline;text-underline-offset:4px}
.filter-button{font-size:.875rem;min-height:44px;padding:9px 17px}.text-link,.button{font-size:.9375rem}.text-link{min-height:36px}.footer-inner{font-size:.8125rem;flex-wrap:wrap}.footer-links{flex-wrap:wrap;gap:12px 20px}.footer-links a{padding-block:5px}
.section{padding-block:86px}.hero{padding-top:42px}.hero-content{min-height:560px}.hero h1{font-size:clamp(3.2rem,5.6vw,5.4rem)}.hero .lead-copy{font-size:1rem;max-width:440px}.hero-author{font-size:.875rem}.hero-author small{font-size:.8125rem}.hero-bottom{font-size:.75rem;letter-spacing:.06em}
.start-here{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:28px;background:#e5e9dc;border-left:3px solid var(--green);margin-bottom:24px}.start-here h2{font-size:1.75rem;margin-bottom:12px;letter-spacing:-.025em}.start-here p{font-size:1rem;max-width:650px;margin:0}.start-here .button{flex-shrink:0}.catalog-note{max-width:830px;margin-bottom:28px}
.project-scope{border-block:1px solid var(--line);padding:24px 0;margin-bottom:32px}.project-scope h2{font-size:1.6rem;letter-spacing:-.025em}.project-scope p{font-size:1rem}
.measurement-figure{margin:0 0 35px}.measurement-figure img{width:100%}.measurement-figure figcaption,.archive-map figcaption{font-size:.875rem;color:var(--muted);margin-top:12px}
.resource{grid-template-columns:60px minmax(0,1fr) 230px}.resource p{font-size:1rem}.resource .meta{font-size:.8125rem;letter-spacing:.02em;text-transform:none}.resource-actions{display:flex;flex-direction:column;align-items:flex-start;gap:10px}.resource-actions .text-link{font-size:.875rem}
.document-content{max-width:1050px}.document-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:14px 24px;margin-bottom:28px}.archive-document{border-top:1px solid var(--line);padding-top:28px;margin-top:35px;overflow-wrap:anywhere}.archive-document p{font-size:1rem;line-height:1.8;white-space:normal}.archive-document h3{font-size:1.6rem;margin-top:30px}.document-table{overflow-x:auto;margin:25px 0;max-width:100%;border:1px solid var(--line)}.document-table table{border-collapse:collapse;width:100%;min-width:580px;font-size:.9375rem}.document-table td,.document-table th{padding:12px;border:1px solid var(--line);vertical-align:top;min-width:80px}.document-table td p{margin-bottom:8px;font-size:.9375rem;line-height:1.6}.document-table th{background:#e5e9dc;text-align:left}.archive-map{margin:30px auto;max-width:640px}.archive-map img{width:auto;max-height:800px;margin:auto}.material-attachments{padding:25px 0;border-block:1px solid var(--line);margin-top:25px}.material-attachments h2{font-size:1.8rem}
.planning-content{max-width:980px}.planning-content h2{font-size:2rem;margin-top:35px}.writing-line{min-height:46px;border-bottom:1px solid #a9b0a1;padding:8px 0}.parts-table td{height:48px}.planning-checks{padding-left:24px}.planning-checks li{margin-bottom:12px}.sketch-space{height:200px;border:1px solid var(--line);margin:20px 0}
@media(max-width:1050px){.menu-toggle{display:block;min-height:44px}.header-inner{height:75px}.nav-main{display:none;position:absolute;left:0;right:0;top:75px;padding:20px 28px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:4px;font-size:1rem}.nav-main.open{display:flex}.nav-main a{padding:12px 0;min-height:44px}.nav-main .nav-cta{margin-top:8px;text-align:center}.start-here{align-items:flex-start;flex-direction:column}.resource{grid-template-columns:45px minmax(0,1fr)}.resource-actions{grid-column:2;flex-direction:row;flex-wrap:wrap;align-items:center;gap:12px 20px}.gallery-item:last-child{display:block}}
@media(max-width:850px){.gallery-item:last-child{grid-column:span 2}.gallery-item:last-child img{height:260px}.section{padding-block:65px}.hero-content{min-height:500px}.hero-bottom{font-size:.68rem}.project-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.hero-actions{flex-wrap:wrap}.hero-actions .text-link{font-size:.9375rem}}
@media(max-width:600px){.section{padding-block:52px}.hero{padding-top:30px}.hero-content{min-height:0}.hero h1{font-size:clamp(2.4rem,10.4vw,3.4rem);line-height:1.08;margin-bottom:20px}.hero .eyebrow{font-size:.6875rem;margin-bottom:18px}.hero .lead-copy{font-size:1rem}.hero-actions{gap:18px;margin-top:24px}.hero-author{margin-top:22px}.hero-art{height:310px;margin-top:8px}.hero-bottom{font-size:.6875rem;line-height:1.5}.eyebrow{font-size:.75rem}.project-grid{gap:30px 16px}.project-meta{font-size:.8125rem;margin-top:14px}.project-card h3{font-size:1.25rem}.project-card p{font-size:.9375rem;line-height:1.65}.project-tags{font-size:.8125rem}.project-image .project-index{font-size:.6875rem!important}.project-image .project-arrow{width:32px;height:32px}.filter-button{font-size:.875rem;min-height:44px;padding:9px 13px}.gallery-item:last-child img{height:220px}.gallery-caption{font-size:.8125rem}.start-here{padding:22px}.start-here h2{font-size:1.6rem}.page-hero h1{font-size:clamp(2.2rem,9.4vw,3rem);overflow-wrap:anywhere}.page-hero .lead-copy{font-size:1rem}.article-aside{grid-template-columns:minmax(0,1fr)}.article-aside>.button{grid-column:1}.article-layout{gap:30px}.step p{font-size:1rem}.resource h2{font-size:1.4rem}.resource p{font-size:.9375rem}.resource{grid-template-columns:35px minmax(0,1fr)}.resource-actions{flex-direction:column;align-items:flex-start}.resource-actions .button{font-size:.875rem}.quiz{padding:25px}.gallery-controls button{width:44px;height:44px}.dialog-close{min-width:44px;min-height:44px}.document-table table{font-size:.875rem}.document-toolbar .button{width:100%}.project-scope h2{font-size:1.5rem}.project-scope .button{width:100%}.page-kicker .page-number:empty{display:none}}
@media(max-width:350px){.container{padding-inline:18px}.brand{gap:8px}.brand-text{font-size:.75rem}.brand-text small{font-size:.55rem}.brand-mark{width:36px;height:36px}.menu-toggle{font-size:.875rem;padding-inline:9px}.header-inner{gap:10px}.project-grid{grid-template-columns:minmax(0,1fr)}}
@media print{.document-toolbar,.resource-actions,.project-tags,.project-scope .button,.start-here{display:none!important}.document-content,.planning-content{max-width:none}.document-table{overflow:visible}.document-table table{min-width:0;font-size:9pt}.document-table td,.document-table th{padding:6px;min-width:0}.archive-document p,.document-table td p{font-size:10pt;line-height:1.45}.document-table tr{break-inside:avoid}.planning-content h2{font-size:18pt;margin-top:20px}.parts-table td{height:28px}.sketch-space{height:100px}.project-meta{font-size:10pt}.article-aside .small-note{font-size:9pt}.measurement-figure img{max-height:130px;width:auto;margin:auto}}

/* Independent photo viewer, including browsers without native dialog support. */
body.gallery-open{overflow:hidden}
.gallery-dialog.gallery-overlay{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:20px;border:0;background:#142820e8;overflow:auto;box-shadow:none;backdrop-filter:blur(5px)}
.gallery-overlay .gallery-panel{width:min(920px,100%);max-height:calc(100vh - 40px);max-height:calc(100dvh - 40px);display:flex;flex-direction:column;background:var(--paper);box-shadow:0 20px 100px #0005;overflow:auto}
.gallery-overlay #dialog-image{width:100%;min-height:0;height:auto;max-height:calc(100vh - 180px);max-height:calc(100dvh - 180px);object-fit:contain;background:#e1decf;flex:1 1 auto}
.gallery-overlay .dialog-top{flex-shrink:0}
.gallery-bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:13px 20px;flex-shrink:0}
.gallery-bottom .dialog-caption{padding:0;margin:0;font-size:.82rem}
.gallery-controls{display:flex;align-items:center;gap:12px;flex-shrink:0;font-size:.75rem;font-variant-numeric:tabular-nums}
.gallery-controls button{width:36px;height:36px;background:transparent;border:1px solid #b7bfaa;color:var(--ink);border-radius:50%}
.gallery-controls button:hover{background:var(--green);color:var(--paper)}
@media(max-width:600px){.gallery-dialog.gallery-overlay{padding:10px}.gallery-overlay .gallery-panel{max-height:calc(100dvh - 20px)}.gallery-bottom{flex-direction:column;align-items:flex-start;gap:10px;padding:13px 16px}.gallery-controls{align-self:center}.gallery-overlay #dialog-image{max-height:calc(100dvh - 210px)}}

@media(max-width:600px){.gallery-overlay .gallery-controls button{width:44px;height:44px}.gallery-overlay .dialog-close{min-width:44px;min-height:44px}.gallery-overlay .gallery-bottom .dialog-caption{font-size:.875rem}}

.back-top{width:44px;height:44px}
.birdhouse-plan{max-width:720px;margin:28px auto}.birdhouse-plan img{width:100%;height:auto;border:1px solid var(--line)}.birdhouse-plan figcaption{font-size:.875rem;color:var(--muted);margin-top:12px;line-height:1.6}
@media print{.birdhouse-plan{max-width:150mm;break-inside:avoid}.birdhouse-plan figcaption{font-size:9pt}.project-scope:has(.birdhouse-plan){break-before:page}.birdhouse-plan img{max-height:220mm;width:auto;margin:auto}}

/* Tool reference: photographs, identification and comparison. */
.tool-entry{padding-top:24px;padding-bottom:10px}.tool-entry-actions{display:flex;align-items:center;flex-wrap:wrap;gap:20px 30px}.tool-comparison{background:#eae8dc;margin-top:45px}.tool-comparison .section-heading>p{max-width:350px}.tool-compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:30px}.tool-compare-card{background:var(--paper-light);border:1px solid var(--line);min-width:0}.tool-compare-card>div{padding:26px 30px}.tool-compare-card h3{font-size:2rem;margin-bottom:15px}.tool-compare-card p{font-size:1rem}.comparison-lead{font-weight:600;color:var(--green)}.comparison-note{margin-top:25px;margin-bottom:0}.comparison-note a{text-decoration:underline;text-underline-offset:3px}
.tool-photo{display:flex;position:relative;align-items:center;justify-content:center;aspect-ratio:1.5;background:#fff;overflow:hidden;border-bottom:1px solid var(--line);padding:18px}.tool-photo img{width:100%;height:100%;object-fit:contain;transition:transform .25s}.tool-photo:hover img{transform:scale(1.025)}.tool-photo:focus-visible{outline-offset:-5px}.tool-photo.comparison-photo{height:300px;aspect-ratio:auto;padding:25px}.tool-zoom{position:absolute;right:12px;bottom:10px;background:#f5f1e8ee;color:var(--ink);padding:4px 9px;border:1px solid var(--line);border-radius:3px;font-size:.8125rem}
.tool-controls{margin-bottom:30px}.tool-search-row{display:grid;grid-template-columns:minmax(0,1fr) 260px auto;align-items:end;gap:16px;margin-bottom:22px}.tool-search label,.tool-kind label{display:block;font-size:.875rem;font-weight:600;margin-bottom:8px}.tool-search input,.tool-kind select{width:100%;min-height:52px;padding:12px 15px;background:var(--paper-light);border:1px solid #aeb7a4;border-radius:3px;color:var(--ink);font:inherit}.tool-search input::placeholder{color:#64705f;opacity:1}.tool-category-filters{display:flex;gap:9px;flex-wrap:wrap}.tool-category{min-height:46px;padding:10px 15px;border:1px solid #b8c0ad;border-radius:3px;background:transparent;color:var(--ink);font-size:.9375rem}.tool-category span{margin-left:9px;opacity:.75;font-variant-numeric:tabular-nums}.tool-category.active{background:var(--green);color:var(--paper);border-color:var(--green)}.tool-count{margin:18px 0 0}
.tool-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px 24px}.tool-card{border:1px solid var(--line);background:var(--paper-light);border-radius:3px;overflow:hidden;min-width:0;display:flex;flex-direction:column;scroll-margin-top:110px}.tool-card-body{padding:22px;display:flex;flex-direction:column;flex:1}.tool-card-meta{display:flex;flex-wrap:wrap;gap:5px 12px;margin-bottom:13px;color:var(--muted);font-size:.8125rem}.tool-card h3{font-size:1.5rem;line-height:1.25;letter-spacing:-.025em;margin-bottom:15px;overflow-wrap:anywhere}.tool-card p{font-size:.9375rem;line-height:1.7}.tool-card details{border-block:1px solid var(--line);margin:3px 0 18px;padding:8px 0;font-size:.875rem}.tool-card summary{min-height:40px;padding-block:7px;cursor:pointer;font-weight:600}.tool-card details p{font-size:.9375rem;margin:8px 0 12px}.tool-card .tool-photo-credit{font-size:.8125rem;color:var(--muted);margin-top:auto;margin-bottom:0;overflow-wrap:anywhere;line-height:1.6}.tool-photo-credit a{text-decoration:underline;text-underline-offset:3px}.tool-empty{padding:35px;border:1px solid var(--line);background:var(--paper-light)}.tool-empty h3{font-size:1.6rem}.tool-empty p{margin:0}.tool-source-item{border-top:1px solid var(--line);padding-top:25px;margin-top:30px;scroll-margin-top:110px}.tool-source-item h3{font-size:1.4rem}.tool-source-item p{font-size:.9375rem;overflow-wrap:anywhere}.tool-invite{display:grid;grid-template-columns:1.1fr 1fr;align-items:center;gap:55px}.tool-invite h2{margin-bottom:25px}.tool-invite p{font-size:1rem;max-width:600px}.tool-invite-photos{display:grid;grid-template-columns:1fr 1fr;gap:16px}.tool-invite-photos figure{margin:0;min-width:0}.tool-invite-photos img{background:white;border:1px solid var(--line);width:100%;height:180px;object-fit:contain;padding:12px}.tool-invite-photos figcaption{font-size:.875rem;margin-top:10px}
@media(max-width:1150px){.menu-toggle{display:block;min-height:44px}.header-inner{height:75px}.nav-main{display:none;position:absolute;left:0;right:0;top:75px;padding:20px 28px;background:var(--paper);border-bottom:1px solid var(--line);flex-direction:column;align-items:stretch;gap:4px;font-size:1rem}.nav-main.open{display:flex}.nav-main a{padding:12px 0;min-height:44px}.nav-main .nav-cta{margin-top:8px;text-align:center}}
@media(max-width:950px){.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.tool-search-row{grid-template-columns:minmax(0,1fr) 220px}.tool-reset{grid-column:span 2;justify-self:start}.tool-invite{gap:30px}.tool-invite-photos img{height:145px}}
@media(max-width:600px){.tool-entry-actions{align-items:flex-start;flex-direction:column;gap:16px}.tool-comparison{margin-top:30px}.tool-compare-grid{grid-template-columns:minmax(0,1fr);gap:25px}.tool-photo.comparison-photo{height:240px}.tool-compare-card>div{padding:23px}.tool-compare-card h3{font-size:1.7rem}.tool-search-row{grid-template-columns:minmax(0,1fr);gap:15px}.tool-reset{grid-column:1}.tool-category-filters{gap:7px}.tool-category{font-size:.875rem;padding:9px 12px}.tool-category span{margin-left:5px}.tool-grid{grid-template-columns:minmax(0,1fr);gap:24px}.tool-card h3{font-size:1.55rem}.tool-card-body{padding:22px}.tool-photo{aspect-ratio:1.45}.tool-invite{grid-template-columns:minmax(0,1fr);gap:30px}.tool-invite-photos img{height:160px}}
@media print{.tool-controls,.tool-entry,.tool-zoom,.tool-invite{display:none!important}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.tool-card,.tool-compare-card{break-inside:avoid}.tool-photo{max-height:140px}.tool-card-body{padding:12px}.tool-card h3{font-size:14pt}.tool-card p,.tool-card details p{font-size:10pt}.tool-card-meta,.tool-card .tool-photo-credit{font-size:8pt}.tool-photo.comparison-photo{height:170px}.tool-compare-card>div{padding:15px}.tool-comparison{margin-top:0}}
.tool-photo{height:245px;aspect-ratio:auto;flex-shrink:0}.tool-photo.comparison-photo{height:300px}
@media(max-width:600px){.tool-photo{height:240px}.tool-photo.comparison-photo{height:240px}}
@media print{.tool-photo,.tool-photo.comparison-photo{height:140px}}