:root{--ink:#20362f;--cream:#faf7ed;--yellow:#f4d148;--muted:#53635a;--line:#b7b8a5;--paper:#fffdf7;--green:#e6ecd9}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:1.5rem}body{margin:0;background:var(--cream);color:var(--ink);font:1.125rem/1.65 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}a{color:inherit;text-underline-offset:.22em}a:hover{text-decoration-thickness:2px}a:focus-visible{outline:3px solid #a13c12;outline-offset:5px}img{max-width:100%;height:auto}h1,h2,h3,p,figure{margin:0}h1,h2,h3{line-height:1.12;letter-spacing:-.035em}h1{font-size:clamp(2.8rem,6vw,5.4rem);font-weight:750}h2{font-size:clamp(2rem,3.2vw,3rem)}h3{font-size:1.5rem}p+p{margin-top:1rem}.skip{position:fixed;left:1rem;top:-7rem;z-index:10;background:var(--yellow);padding:.8rem}.skip:focus{top:1rem}.preview{text-align:center;background:var(--ink);color:#fffdf2;padding:.4rem 1rem;font-size:1rem}.site-header{max-width:1280px;margin:auto;padding:1.7rem 2.5rem;display:flex;align-items:center;justify-content:space-between;gap:1.5rem;border-bottom:1px solid var(--line)}.brand{display:inline-flex;align-items:center;gap:.5rem;font-size:1.65rem;font-weight:800;letter-spacing:-.06em;text-decoration:none}.brand-dot{color:#976400}.site-header nav{display:flex;gap:1.8rem;flex-wrap:wrap;font-size:1rem;font-weight:650}.site-header nav a{text-decoration:none;padding:.3rem 0}.site-header nav a[aria-current]{box-shadow:0 2px var(--ink)}main{max-width:1280px;margin:auto}.hero{display:grid;grid-template-columns:1.12fr 1fr;align-items:center;gap:2rem;padding:4rem 2.5rem 3rem}.eyebrow{font-size:1rem;font-weight:700;letter-spacing:.04em;margin-bottom:1.2rem}.lead{font-size:1.25rem;max-width:34em;margin-top:1.6rem;color:#354c40}.actions{display:flex;gap:1.4rem;align-items:center;flex-wrap:wrap;margin-top:2rem}.button{display:inline-flex;align-items:center;gap:1rem;justify-content:center;padding:.85rem 1.25rem;border-radius:2rem;background:var(--ink);color:#fffdf2;text-decoration:none;font-size:1rem;font-weight:700;border:2px solid var(--ink)}.button:hover{background:#354c40}.quiet-link,.text-link{font-size:1rem;font-weight:700}.hero-art{background:var(--yellow);border-radius:48% 48% 8% 8%;padding:1rem 1.5rem 1.25rem;transform:rotate(2deg)}.hero-art img{display:block;transform:rotate(-2deg)}figcaption{font-size:1rem;line-height:1.45;text-align:center;max-width:26em;margin:.5rem auto 0}.intro-strip{margin:0 2.5rem;display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:1.5rem 0;gap:2rem}.intro-strip span{font-size:1rem;font-weight:750}.intro-strip p{font-size:1.125rem;margin-top:.3rem}.section{padding:4.5rem 2.5rem}.section-head{display:grid;grid-template-columns:1.25fr 1fr;gap:3rem;align-items:end}.section-head p{max-width:30em}.notice{margin:2rem 0;background:var(--green);padding:1.25rem 1.5rem;border-left:4px solid var(--ink);font-size:1rem}.cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.2rem}.card{background:var(--paper);border:1px solid var(--line);border-radius:1.1rem;padding:1.5rem;display:flex;flex-direction:column;min-width:0}.card-top{display:flex;justify-content:space-between;gap:.7rem;align-items:center;margin-bottom:2rem}.number{font-size:1rem;color:var(--muted);font-weight:700}.pill{font-size:1rem;border:1px solid var(--line);padding:.15rem .6rem;border-radius:2rem}.size{font-size:1.45rem;font-weight:750;line-height:1.3;margin:1rem 0}.card dl{margin:0}.card dl div{border-top:1px solid #d3d2be;padding:.8rem 0}.card dt{font-size:1rem;font-weight:700}.card dd{margin:.3rem 0 0;font-size:1.0625rem}.source-note{font-size:1rem;color:#495b50;line-height:1.5}.card .source-note{margin-top:auto;padding-top:1rem}.source-link{font-size:1rem;font-weight:700;margin-top:1rem}.buy{margin-top:1.5rem}.amazon-search{margin-top:2rem;padding:2rem;border:1px dashed #7f8e79;border-radius:1rem;display:grid;grid-template-columns:1fr 1fr;gap:2.5rem}.amazon-search h3{margin-bottom:.8rem}.amazon-search .source-note{margin-top:1rem}.guide-teaser{display:grid;grid-template-columns:1fr 1fr;gap:3rem;background:var(--green);border-radius:1.5rem;margin:0 2.5rem 4rem;padding:3rem}.guide-teaser p:not(.eyebrow){margin:1.5rem 0}.outline{background:transparent;color:var(--ink)}.outline:hover{color:white}.measure-art{display:flex;align-items:end;gap:2rem;flex-wrap:wrap;justify-content:center}.measure{display:flex;align-items:center;flex-direction:column;gap:.5rem;font-size:1rem;font-weight:700}.block{display:block;background:var(--yellow);width:4.5rem;border-radius:3rem 3rem .3rem .3rem;border:2px solid var(--ink)}.small .block{height:4.5rem}.large .block{height:15rem}.measure-art p{width:100%;font-size:1rem;text-align:center;margin:0!important}.page-intro{padding:4rem 2.5rem}.article-grid{display:grid;grid-template-columns:1fr 2.4fr;gap:4rem;padding:0 2.5rem 4rem}.aside{border-top:2px solid var(--ink);padding-top:1.4rem}.aside h2{font-size:1.5rem}.aside ol{padding-left:1.4rem}.aside a{font-size:1rem;font-weight:650}.prose{max-width:47rem}.prose h2{font-size:2rem;margin:2.5rem 0 1rem}.prose h2:first-child{margin-top:0}.prose h3{margin-bottom:1rem}.prose p{margin-bottom:1.2rem}.callout{padding:1.6rem;background:var(--green);border-radius:1rem;margin:2rem 0}.methods{margin:0 auto;padding:0 2.5rem 4rem;max-width:53rem}.sources{padding-left:1.5rem}.sources li{margin-bottom:1.2rem;overflow-wrap:anywhere}.disclosure{padding:1rem;background:#f9ebac;font-size:1rem;margin-bottom:1.5rem}footer{max-width:1280px;margin:auto;padding:2.5rem;display:flex;justify-content:space-between;gap:3rem;border-top:1px solid var(--line)}footer p,footer a:not(.brand){font-size:1rem}footer p{margin-top:.7rem}footer div:last-child{max-width:30em} @media(max-width:900px){.site-header{align-items:flex-start;flex-direction:column}.hero{grid-template-columns:1fr 1fr;gap:1.5rem}.cards{grid-template-columns:1fr}.card{padding:1.5rem}.card-top{margin-bottom:1rem}.card .source-note{margin-top:0}.guide-teaser{padding:2rem;gap:2rem}.article-grid{gap:2rem}}@media(max-width:620px){.site-header{padding:1.1rem 1.25rem;gap:.8rem}.site-header nav{gap:.4rem 1.1rem;line-height:1.7}.hero{grid-template-columns:1fr;padding:2.5rem 1.25rem 2rem}.hero-art{margin:1rem auto 0;max-width:29rem}.hero-art img{max-height:300px}.intro-strip{grid-template-columns:1fr;margin:0 1.25rem;gap:1rem}.intro-strip div{display:block}.section{padding:3rem 1.25rem}.section-head,.amazon-search{grid-template-columns:1fr;gap:1.4rem}.section-head .eyebrow{margin-bottom:.7rem}.notice{padding:1.1rem}.guide-teaser{grid-template-columns:1fr;margin:0 1.25rem 3rem;padding:1.5rem}.measure-art{margin-top:1rem}.page-intro{padding:2.5rem 1.25rem}.article-grid{grid-template-columns:1fr;padding:0 1.25rem 3rem;gap:2.5rem}.methods{padding:0 1.25rem 3rem}footer{padding:2rem 1.25rem;flex-direction:column;gap:1.5rem}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}

.holiday-feature{margin:3rem 2.5rem 0;padding:2rem 2.5rem;border-radius:1.25rem;background:var(--green);border:1px solid var(--line)}.holiday-feature h2{max-width:24em}.holiday-feature p:not(.eyebrow){max-width:48em;margin:1rem 0 1.5rem}.cards.single{grid-template-columns:1fr;margin:1.5rem 0 2.5rem}.intro-strip a{display:inline-block;margin-top:.7rem}.prose .card h3{margin:0}.prose .card .source-note{margin-bottom:0}@media(max-width:620px){.holiday-feature{margin:2rem 1.25rem 0;padding:1.5rem}}

.field-notes{padding:1rem 2.5rem 3rem}.field-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1.4rem;margin:1.5rem 0}.field-grid>div{padding:1.25rem;border:1px solid var(--line);border-radius:1rem;background:var(--paper);min-width:0}.field-grid dt{font-size:1rem;font-weight:750;margin-bottom:.6rem}.field-grid dd{margin:0;font-size:1.125rem}.field-grid.single{grid-template-columns:1fr}.intro-strip h3{font-size:1.5rem;margin:.8rem 0}.history-entry{padding:1.5rem 0;border-top:1px solid var(--line)}.history-date{font-size:1rem;font-weight:700}.history-entry h3{font-size:1.5rem}.history-entry .text-link{font-size:1rem}.prose .field-grid{margin-bottom:2.5rem}@media(max-width:720px){.field-grid{grid-template-columns:1fr}.field-notes{padding:1rem 1.25rem 2.5rem}}

.product-art{margin:-.25rem -.25rem 1.5rem;border-radius:.8rem;overflow:hidden;background:var(--cream);aspect-ratio:30/17}.product-art img{display:block;width:100%;height:100%;object-fit:contain}.card-top{margin-bottom:1.25rem}

.product-art{aspect-ratio:3/2}.availability{font-size:1rem;font-weight:700;margin-top:.8rem}.scale-art{min-width:0}.scale-art>img{display:block;width:100%;height:auto}.scale-labels{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:.5rem;margin:.75rem 0 0;text-align:center}.scale-labels div{min-width:0}.scale-labels dt{font-size:1rem;font-weight:750}.scale-labels dd{font-size:1rem;margin:.3rem 0 0}

.brand img{background:var(--yellow);border-radius:.7rem;object-fit:contain;padding:.1rem}.hero-art img{object-fit:contain}/* Clip transparent image margins without making the scale diagram scrollable. */
.scale-stage{position:relative;overflow:clip}.scale-stage::after{content:"";position:absolute;bottom:0;left:0;right:0;border-bottom:1px solid #8e9a79}.scale-stage>img{display:block;position:absolute;height:auto}

.coloring-page .page-intro {
  padding-bottom: 1.5rem;
  text-align: center;
}

.coloring-page .lead {
  margin-inline: auto;
}

.coloring-download {
  margin-top: 1.25rem;
}

.coloring-sheet {
  width: min(34rem, calc(100% - 2.5rem));
  margin: 0 auto 3rem;
}

.coloring-sheet img {
  display: block;
  width: 100%;
  background: white;
  border: 1px solid var(--line);
}

@page ducknana-coloring {
  margin: 0.45in;
}

@media print {
  body.coloring-page {
    page: ducknana-coloring;
    background: white;
  }

  .coloring-page > :not(main),
  .coloring-page main > :not(.coloring-sheet) {
    display: none;
  }

  .coloring-page .coloring-sheet {
    width: auto;
    margin: 0;
    break-inside: avoid;
  }

  .coloring-page .coloring-sheet img {
    width: auto;
    height: 9.6in;
    max-width: 100%;
    margin: 0 auto;
    border: 0;
    object-fit: contain;
  }
}