/* Storybook print directory: approved theme covers with a compact printable catalog. */
:root {
  --color-paper:#ffffff; --color-card:#ffffff; --color-paper-2:#f4f8f5;
  --color-ink:#302d28; --color-muted:#626b65; --color-rule:#d8e1db;
  --color-accent:#195d40; --color-accent-deep:#10472f; --color-accent-ink:#ffffff;
  --color-pear:#ffe492; --color-blue:#b8ddf2; --color-peach:#ffd0ae; --color-sea:#c0e4ef; --color-leaf:#d8edc7;
  --color-focus:#227552; --color-disabled:#e1e7e3; --color-book-edge:#91a99b;
  --font-body:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-title:"Storybook Title","YouYuan","Microsoft YaHei",sans-serif;
  --radius-card:8px; --radius-input:5px; --container:1200px;
}

/* The book covers lead to categories; every drawing keeps its own direct download. */
@font-face{font-family:"Storybook Title";src:url("/static/storybook-titles-786a43018cb1.woff") format("woff");font-style:normal;font-weight:400;font-display:swap}
*{box-sizing:border-box}html{overflow-x:clip;scroll-padding-top:20px;scrollbar-color:var(--color-book-edge) var(--color-paper)}body{margin:0;overflow-x:clip;background:var(--color-paper);color:var(--color-ink);font:15px/1.7 var(--font-body)}
[hidden]{display:none!important}button,select{font:inherit;color:inherit}a{color:inherit;text-decoration:none}a,button,select,summary{touch-action:manipulation}a:hover{color:var(--color-accent)}a:active,button:active{transform:translateY(1px)}:focus-visible{outline:3px solid var(--color-focus);outline-offset:4px}button:disabled,[aria-disabled="true"]{background:var(--color-disabled);color:var(--color-muted);cursor:not-allowed}[aria-busy="true"]{cursor:progress}::selection{background:var(--color-pear);color:var(--color-ink)}
h1,h2,h3{min-width:0;overflow-wrap:break-word;text-wrap:balance;line-height:1.4}img{max-width:100%}
header,main,footer{width:min(var(--container),calc(100% - 48px));margin-inline:auto}header{display:flex;justify-content:space-between;align-items:center;gap:24px;min-height:76px;border-bottom:2px solid var(--color-accent)}
.brand{display:inline-flex;align-items:center;gap:10px;font:400 29px/1.2 var(--font-title);color:var(--color-accent);white-space:nowrap}.brand-mark{display:block;width:40px;height:40px}.site-nav{display:flex;flex-wrap:wrap;gap:26px;font-size:15px;font-weight:600;color:var(--color-accent)}.site-nav a{padding-block:12px}.site-nav a:hover{text-decoration:underline;text-underline-offset:6px}.skip-link{position:fixed;top:-100px;left:16px;z-index:100;padding:12px;background:var(--color-card)}.skip-link:focus{top:12px}
.home-hero{display:flex;align-items:center;justify-content:space-between;gap:24px;padding-block:22px}.home-hero-copy{min-width:0}.home-hero h1{font:400 clamp(28px,3.2vw,39px)/1.35 var(--font-title);margin:0 0 6px}.home-hero-intro{margin:0;font-size:16px}.home-hero-count{display:flex;flex-wrap:wrap;gap:12px;margin:0;padding:3px 5px;border-bottom:5px solid var(--color-pear);font-size:13px;font-weight:600;white-space:nowrap}.home-hero-count span+span{padding-left:12px;border-left:1px solid var(--color-rule)}
.category-index{scroll-margin-top:20px}.theme-cards{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.theme-card{--chapter-color:var(--color-pear);display:block;min-width:0;border:1px solid var(--color-book-edge);border-radius:var(--radius-card);background:var(--color-card);overflow:clip;text-align:center;color:var(--color-accent)}.theme-card[data-theme="dinosaurs"]{--chapter-color:var(--color-blue)}.theme-card[data-theme="vehicles"]{--chapter-color:var(--color-peach)}.theme-card[data-theme="sea"]{--chapter-color:var(--color-sea)}.theme-card:hover{border-color:var(--color-accent)}.chapter-tab{display:flex;justify-content:center;gap:10px;padding:5px 8px;background:var(--chapter-color);font:400 19px/1.4 var(--font-title);color:var(--color-ink)}.chapter-tab span{font-family:var(--font-body);font-size:14px;font-weight:700;align-self:center}.theme-card-art{display:grid;place-items:center;height:180px;margin:6px 10px 0}.theme-card-art img{display:block;width:100%;height:100%;min-height:0;object-fit:contain}.theme-card-copy{padding:0 10px 12px}.theme-card-copy h3{margin:0 0 3px;font:400 30px/1.3 var(--font-title);color:var(--color-ink)}.theme-card-copy p{display:inline-block;margin:0 0 5px;padding:0 14px;background:var(--color-paper-2);border-radius:16px;font-size:12px}.theme-card-link{display:block;font-size:13px;font-weight:600;text-decoration:underline;text-underline-offset:4px}.theme-card-link span{margin-left:7px;text-decoration:none}
.difficulty-directory{display:flex;align-items:center;gap:20px;min-height:56px;margin-block:22px;border:1px solid var(--color-book-edge);border-radius:var(--radius-card);padding:8px 18px;scroll-margin-top:20px}.difficulty-directory h2{flex-shrink:0;margin:0;padding:2px 12px;border-radius:4px;background:var(--color-accent);color:var(--color-accent-ink);font:400 20px/1.4 var(--font-title)}.level-links{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));width:100%}.level-link{--chapter-color:var(--color-pear);min-width:0;min-height:36px;text-align:center;border-left:1px solid var(--color-rule)}.level-link:nth-child(2){--chapter-color:var(--color-blue)}.level-link:nth-child(3){--chapter-color:var(--color-peach)}.level-link:nth-child(4){--chapter-color:var(--color-sea)}.level-link strong{display:inline-block;font-size:14px;line-height:30px;border-bottom:4px solid var(--chapter-color)}.level-link:hover strong{border-bottom-color:var(--color-accent)}
.section-heading{display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 20px;margin:28px 0 16px}.section-heading h2{margin:0;font:400 28px/1.4 var(--font-title)}.section-heading p{margin:0;color:var(--color-muted);font-size:13px}.all-pictures{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;column-gap:16px;margin-top:26px}.all-pictures>.section-heading{grid-column:1;grid-row:1;display:block;margin:0}.all-pictures>.section-heading p{display:none}.all-pictures>.filters{grid-column:2;grid-row:1;border:0;padding:0}.all-pictures>.gallery-anchor,.all-pictures>noscript,.all-pictures>.gallery-listing,.all-pictures>.empty{grid-column:1/-1}.gallery-anchor{scroll-margin-top:20px}
.filters{display:flex;align-items:center;flex-wrap:wrap;gap:12px 20px;padding-block:12px;border-bottom:1px solid var(--color-rule)}.filters label{display:flex;align-items:center;gap:8px;font-size:13px}select{min-height:40px;max-width:100%;padding:5px 10px;border:1px solid var(--color-book-edge);border-radius:var(--radius-input);background:var(--color-card)}.count{margin-left:auto;color:var(--color-muted);font-size:12px}
.gallery{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:26px 20px;margin-block:18px 28px}.card{min-width:0}.art-link{display:block;padding:8px;border:1px solid var(--color-book-edge);border-radius:5px;background:var(--color-card)}.art-link:hover{border-color:var(--color-accent)}.art-link img{display:block;width:100%;height:220px;object-fit:contain}.card-body{padding-top:5px}.card h2{margin:0 0 3px;font-size:16px;font-weight:700}.meta{display:flex;flex-wrap:wrap;gap:5px;color:var(--color-muted);font-size:12px}.level-badge{color:var(--color-accent)}.style-note{display:inline-block;margin:0 0 8px;color:var(--color-muted);font-size:11px}.card-actions{display:flex;align-items:center;gap:20px}.primary,.secondary,.reset-filters{display:inline-flex;align-items:center;justify-content:center;min-height:40px;padding:6px 16px;border:1px solid var(--color-accent);border-radius:var(--radius-input);background:var(--color-accent);color:var(--color-accent-ink);font-size:13px;font-weight:600;cursor:pointer}.primary:hover{background:var(--color-accent-deep);color:var(--color-accent-ink);border-color:var(--color-accent-deep)}.secondary,.reset-filters{background:var(--color-paper);border-color:var(--color-book-edge);color:var(--color-accent)}.secondary:hover,.reset-filters:hover{background:var(--color-paper-2);color:var(--color-accent)}.text-link{color:var(--color-accent);font-size:12px;text-decoration:underline;text-underline-offset:4px}.empty{padding:28px;text-align:center;background:var(--color-paper-2)}.reset-filters{margin-top:16px}
.themes,.style-links{display:flex;flex-wrap:wrap;gap:8px;margin-block:18px}.theme,.style-links a{min-height:40px;padding:6px 14px;border:1px solid var(--color-rule);border-radius:var(--radius-input);background:var(--color-paper);font-size:14px}.theme.active,.style-links [aria-current="page"]{background:var(--color-accent);border-color:var(--color-accent);color:var(--color-accent-ink)}
.collection-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.collection{display:flex;flex-direction:column;align-items:start;gap:12px;padding:16px 0;border-top:2px solid var(--color-book-edge)}.collection h3{margin:0 0 5px;font-size:15px}.collection p{margin:0;color:var(--color-muted);font-size:11px}.collection .primary{background:var(--color-paper);border-color:var(--color-book-edge);color:var(--color-accent)}.collection .primary:hover{background:var(--color-paper-2)}.help{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-block:28px;padding:18px 22px;background:var(--color-paper-2);border-radius:var(--radius-card)}.help h2{margin:0 0 6px;font:400 23px/1.4 var(--font-title)}.help p{margin:0;color:var(--color-muted);font-size:13px}.help .secondary{flex-shrink:0}
.breadcrumb{display:flex;flex-wrap:wrap;gap:10px;margin-block:20px;color:var(--color-muted);font-size:12px}.breadcrumb a{text-decoration:underline;text-underline-offset:4px}.hub-heading{max-width:800px;margin-block:24px}.hub-heading h1{margin:0 0 10px;font:400 34px/1.4 var(--font-title)}.hub-heading p{color:var(--color-muted);font-size:14px}
.detail{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:32px;align-items:start;margin-block:24px}.sheet{padding:20px;border:1px solid var(--color-book-edge);border-radius:var(--radius-card);background:var(--color-card)}.sheet img{display:block;width:100%;height:auto;max-height:700px;object-fit:contain}.print-credit{margin:10px 0 0;color:var(--color-muted);font-size:12px;text-align:center}.detail-info{position:sticky;top:24px}.detail-info h1{margin:20px 0 12px;font:400 36px/1.4 var(--font-title)}.picture-style,.download-note,.small-status,.source{color:var(--color-muted);font-size:13px}.fact{display:flex;justify-content:space-between;gap:16px;padding-block:12px;border-bottom:1px solid var(--color-rule);font-size:14px}.fact span{color:var(--color-muted)}.detail-description{margin-block:24px}.detail-actions{display:flex;flex-wrap:wrap;gap:12px}.detail-actions .primary,.detail-actions .secondary{min-height:48px;padding-inline:24px;font-size:15px}.download-message:empty{display:none}.source{margin-top:24px;border-top:1px solid var(--color-rule);padding-top:16px}.source summary{cursor:pointer;min-height:44px;color:var(--color-ink)}.source a,.prose a:not(.primary){color:var(--color-accent);text-decoration:underline}.related{margin-block:40px}
.prose{max-width:760px;margin:40px auto}.prose h1{margin:0 0 24px;font:400 34px/1.4 var(--font-title)}.prose h2{margin-top:32px;font-size:22px}.prose p,.prose li{line-height:1.9}footer{margin-top:40px;padding-block:28px;border-top:2px solid var(--color-accent);color:var(--color-muted);font-size:12px}.footer-inner{display:flex;justify-content:space-between;gap:32px}.footer-brand{display:block;margin-bottom:10px;color:var(--color-accent);font:400 25px/1.4 var(--font-title)}.footer-nav{display:flex;flex-wrap:wrap;align-content:start;gap:14px 22px}.footer-small{margin:20px 0 0;font-size:11px}
@media(min-width:701px) and (max-width:1050px){.home-hero-count{gap:8px;font-size:11px}.home-hero-count span+span{padding-left:8px}.home-hero h1{font-size:31px}.theme-card-art{height:145px}.theme-card-copy h3{font-size:24px}.chapter-tab{font-size:17px}.all-pictures{display:block}.all-pictures>.filters{margin-top:10px}.gallery{gap:24px 14px}.art-link img{height:190px}.card-actions{gap:12px}.card .primary{padding-inline:10px}}
@media(max-width:700px){
 header,main,footer{width:calc(100% - 28px)}header{display:block;padding-block:12px;min-height:0}.brand{font-size:27px}.brand-mark{width:34px;height:34px}.site-nav{margin-top:12px;justify-content:space-between;gap:8px;font-size:13px}.site-nav a{padding-block:5px}
 .home-hero{display:block;padding-block:20px}.home-hero h1{font-size:29px}.home-hero-intro{font-size:13px}.home-hero-count{display:inline-flex;margin-top:10px;font-size:11px;gap:9px}.home-hero-count span+span{padding-left:9px}
 .theme-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.chapter-tab{font-size:17px;gap:7px;padding:5px}.chapter-tab span{font-size:12px}.theme-card-art{height:126px;margin:5px 6px 0}.theme-card-copy{padding:0 6px 10px}.theme-card-copy h3{font-size:23px}.theme-card-copy p{font-size:11px;padding-inline:10px}.theme-card-link{font-size:12px}
 .difficulty-directory{display:block;padding:10px;margin-block:18px}.difficulty-directory h2{display:inline-block;margin:0 0 10px;font-size:18px}.level-link:first-child{border-left:0}.level-link strong{font-size:12px;line-height:26px}.level-links{gap:4px}.all-pictures{display:block;margin-top:24px}.all-pictures>.section-heading h2{font-size:25px}.all-pictures>.filters{margin-top:10px}.filters{gap:8px 14px}.filters label{gap:6px;font-size:12px}.filters select{font-size:12px;padding-inline:7px}.count{width:100%;margin:0;font-size:11px}
 .gallery{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 12px;margin-top:14px}.art-link{padding:6px}.art-link img{height:180px}.card h2{font-size:14px}.meta{font-size:11px;gap:4px}.style-note{font-size:10px;margin-bottom:6px}.card-actions{gap:12px}.card .primary{font-size:12px;padding:6px 10px;min-height:44px}.card .text-link{font-size:11px}.section-heading{display:block;margin-block:24px 12px}.section-heading h2{font-size:25px}.section-heading p{font-size:12px;margin-top:5px}.collection-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.collection{padding-block:12px}.collection h3{font-size:14px}.collection p{font-size:11px}.help{display:block;padding:16px}.help .secondary{margin-top:14px}.help p{font-size:12px}
 .detail{grid-template-columns:minmax(0,1fr);gap:20px;margin-block:20px}.detail-info{position:static}.sheet{padding:12px}.sheet img{max-height:480px}.detail-info h1,.hub-heading h1,.prose h1{font-size:29px}.hub-heading p{font-size:13px}.prose{margin-block:32px}.footer-inner{display:block}.footer-nav{margin-top:20px}
}
@media(max-width:360px){.brand{font-size:24px}.site-nav{font-size:12px}.home-hero h1{font-size:26px}.chapter-tab{font-size:15px}.theme-card-copy h3{font-size:21px}.theme-card-art{height:115px}.card-actions{gap:8px}.card .primary{padding-inline:8px}.art-link img{height:155px}.level-link strong{font-size:11px}.filters label{width:100%}.difficulty-directory{padding:8px}.level-links{gap:1px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{@page{size:A4 portrait;margin:10mm}body{background:var(--color-card)}header,footer,.skip-link,.breadcrumb,.detail-info,.related{display:none!important}main{width:100%;margin:0}.detail{display:block;margin:0}.sheet{padding:0;border:0;background:var(--color-card)}.sheet img{max-height:260mm;width:100%;object-fit:contain}.print-credit{font-size:8pt}}

.theme-card[data-theme="fruits"]{--chapter-color:var(--color-peach)}.theme-card[data-theme="garden"]{--chapter-color:var(--color-leaf)}.theme-card[data-theme="space"]{--chapter-color:var(--color-blue)}.theme-card[data-theme="life"]{--chapter-color:var(--color-pear)}