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@media(max-width:720px){.bia{font-size:16px}.bia-opening{grid-template-columns:1fr;border-radius:20px}.bia-opening-art{order:-1}.bia-opening-art .bia-media{aspect-ratio:16/9}.bia-truth-grid,.bia-compare-grid,.bia-vocab dl,.bia-resource-grid{grid-template-columns:1fr}.bia-truth:last-child{grid-column:auto}.bia-section{border-radius:18px;padding:1rem}.bia-wide-art .bia-media{border-radius:16px}.bia-jump{gap:.35rem}.bia-jump a{font-size:.8rem;padding:.4rem .62rem}}
@media(prefers-reduced-motion:reduce){.bia *{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.bia-jump,.bia-practice button,.bia-onward,.bia-opening-art figcaption,.bia-wide-art figcaption{display:none!important}.bia{font-size:11pt;max-width:none}.bia-section,.bia-opening{box-shadow:none;break-inside:avoid}.bia-opening{grid-template-columns:1fr 38%}.bia-ending{background:#fff!important;color:#000!important;border:1px solid #bbb}.bia-ending h2,.bia-ending .bia-step{color:#000}.bia-ending blockquote{background:#fff;color:#000;border-left-color:#555}}

/* v1.1.0 compact chapter reader + signed resource end-cap */
.bia-route-hint{font-size:.9rem;line-height:1.5;color:var(--muted);margin-top:.85rem;padding:.65rem .75rem;border-radius:12px;background:rgba(255,255,255,.66);border:1px solid #e3def2}
.bia-chapter-nav{display:grid;grid-template-columns:40px minmax(0,1fr) 40px auto;gap:.55rem;align-items:end;margin:1rem 0 .7rem;padding:.7rem;border:1px solid #d9ddea;border-radius:16px;background:rgba(255,255,255,.96);box-shadow:0 8px 22px rgba(39,35,86,.08);position:sticky;top:8px;z-index:30}
.bia-chapter-picker{display:grid;gap:.2rem;min-width:0}.bia-chapter-picker>span{font-size:.7rem;line-height:1;font-weight:850;letter-spacing:.09em;text-transform:uppercase;color:var(--violet)}
.bia-chapter-picker select{width:100%;min-height:40px;border:1px solid #cfd4e2;border-radius:10px;background:#fff;color:var(--ink);font:inherit;font-size:.9rem;font-weight:750;padding:.42rem 2rem .42rem .65rem}
.bia-nav-btn{width:40px;height:40px;border:1px solid #cbcfe0;border-radius:10px;background:#fff;color:var(--violet);font-size:1.45rem;line-height:1;font-weight:800;cursor:pointer}.bia-nav-btn:disabled{opacity:.35;cursor:not-allowed}.bia-nav-btn:focus-visible,.bia-chapter-picker select:focus-visible{outline:3px solid #91a6ff;outline-offset:2px}
.bia-progress{align-self:center;white-space:nowrap;font-size:.76rem;font-weight:800;color:var(--muted);padding:.2rem .25rem}
.bia.is-enhanced .bia-reader{max-height:min(66vh,720px);overflow:auto;overscroll-behavior:contain;scrollbar-gutter:stable;padding:0 .35rem .2rem 0;scroll-behavior:smooth}
.bia.is-enhanced .bia-reader>[data-bia-chapter][hidden]{display:none!important}
.bia.is-enhanced .bia-reader>.is-active{animation:bia-in .18s ease-out}
@keyframes bia-in{from{opacity:.55;transform:translateY(3px)}to{opacity:1;transform:none}}
.bia-author-signature{margin:1rem 0 .25rem;padding:.9rem 1rem;border:1px solid rgba(255,255,255,.24);border-radius:16px;background:rgba(255,255,255,.08);display:grid;grid-template-columns:auto 1fr;column-gap:.8rem;align-items:center}
.bia-author-signature .bia-written-by{grid-column:1;font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;font-weight:800;color:#ded7ff}
.bia-author-signature strong{grid-column:1;font-family:"Segoe Print","Bradley Hand",cursive;font-size:clamp(2rem,7vw,3.15rem);font-weight:700;line-height:1;color:#fff;transform:rotate(-2deg);transform-origin:left center}
.bia-author-signature small{grid-column:2;grid-row:1/3;align-self:center;color:#e7e2ff;line-height:1.45}
.bia-coloring-feature{display:grid;grid-template-columns:minmax(150px,.75fr) minmax(0,1.25fr);gap:1rem;align-items:center;margin:1rem 0;padding:.85rem;border-radius:18px;background:#fbf9ff;border:1px solid #e0dcf3}
.bia-coloring-feature img{display:block;width:100%;max-height:260px;object-fit:contain;background:#fff;border:1px solid #e3e3e3;border-radius:12px}.bia-coloring-feature h3{margin:.15rem 0 .4rem}.bia-coloring-feature p{margin:.35rem 0 .7rem}
.bia-download{display:inline-flex;min-height:40px;align-items:center;padding:.5rem .75rem;border-radius:10px;background:var(--violet);color:#fff!important;text-decoration:none;font-size:.88rem;font-weight:800}
.bia-resources .bia-resource-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.bia-resources .bia-onward{margin-top:1rem;padding-top:1rem;border-top:1px solid var(--line)}
@media(max-width:720px){.bia-opening{padding:.85rem}.bia-opening-art .bia-media{aspect-ratio:16/7;max-height:170px}.bia-opening-art figcaption{display:none}.bia-lede{font-size:1rem;line-height:1.45}.bia-route-hint{margin:.55rem 0 0;font-size:.82rem}.bia-note{padding:.75rem .8rem;margin:.65rem 0}.bia-note .bia-icon{display:none}.bia-note h2{font-size:.95rem}.bia-note p{font-size:.86rem;line-height:1.5;margin:.2rem 0}.bia-chapter-nav{grid-template-columns:38px minmax(0,1fr) 38px;margin:.65rem 0 .45rem;padding:.5rem;gap:.4rem;top:4px}.bia-nav-btn{width:38px;height:38px}.bia-progress{grid-column:1/-1;text-align:center;padding:0;font-size:.7rem}.bia.is-enhanced .bia-reader{max-height:64vh;padding-right:.15rem}.bia-section{margin:.6rem 0;padding:.9rem}.bia-wide-art{margin:.6rem auto}.bia-wide-art .bia-media{max-height:240px}.bia-resources .bia-resource-grid,.bia-coloring-feature{grid-template-columns:1fr}.bia-coloring-feature img{max-height:220px}.bia-author-signature{grid-template-columns:1fr}.bia-author-signature small{grid-column:1;grid-row:auto;margin-top:.45rem}.bia-ending{margin-bottom:.55rem}}
@media(prefers-reduced-motion:reduce){.bia.is-enhanced .bia-reader>.is-active{animation:none}}
@media print{.bia-chapter-nav,.bia-route-hint{display:none!important}.bia.is-enhanced .bia-reader{max-height:none!important;overflow:visible!important}.bia [data-bia-chapter][hidden]{display:block!important}.bia-coloring-feature img{max-height:240px}.bia-author-signature{border:1px solid #888;background:#fff!important}.bia-author-signature strong,.bia-author-signature small,.bia-author-signature .bia-written-by{color:#000!important}}

/* v1.2.0 production art pass */
.bia-opening-art .bia-media,.bia-wide-art .bia-media{background:#211a43}
.bia-wide-art .bia-media{aspect-ratio:3/2;object-position:center}
.bia-ending-art{max-width:760px}
.bia-ending-art .bia-media{object-position:center 42%}
@media(max-width:720px){.bia-wide-art .bia-media{max-height:220px}.bia-ending-art{margin-bottom:.7rem}}

/* v1.3.0 compact DearFlip shelf */
.bia-flipbook-shelf{margin:1rem 0;padding:1rem;border:1px solid #ddd7f4;border-radius:18px;background:linear-gradient(145deg,#f8f6ff,#fffaf0)}
.bia-flipbook-heading h3{margin:.15rem 0 .35rem}.bia-flipbook-heading p:last-child{margin:.25rem 0 .8rem;color:var(--muted);font-size:.9rem}
.bia-flipbook-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.8rem}
.bia-flipbook-card{min-width:0;padding:.8rem;border:1px solid #e0ddef;border-radius:14px;background:#fff;text-align:center;overflow:hidden}
.bia-flipbook-card h4{margin:0 0 .55rem;font-size:.95rem;line-height:1.25;color:var(--ink)}
.bia-flipbook-card>a{display:inline-flex;min-height:38px;align-items:center;margin-top:.6rem;padding:.45rem .7rem;border-radius:9px;background:#f0edff;font-size:.8rem;font-weight:800;text-decoration:none}
.bia-flipbook-card ._df_thumb{display:inline-block!important;float:none!important;margin:0 auto!important;max-width:150px;width:42vw!important;height:200px!important;border-radius:9px;overflow:hidden;box-shadow:0 8px 20px rgba(39,35,86,.16)}
.bia-flipbook-card ._df_book-title,.bia-flipbook-card .df-book-title{opacity:1!important;bottom:0!important;font-size:.72rem!important;line-height:1.25!important}
.bia-flipbook-fallback{margin:.5rem 0 0;padding:.7rem;border-radius:10px;background:#fff7df;color:#6d5015}
@media(max-width:720px){.bia-flipbook-shelf{padding:.8rem}.bia-flipbook-grid{grid-template-columns:1fr}.bia-flipbook-card{display:grid;grid-template-columns:minmax(110px,40%) minmax(0,1fr);column-gap:.7rem;align-items:center;text-align:left}.bia-flipbook-card h4{grid-column:2;align-self:end}.bia-flipbook-card>._df_thumb,.bia-flipbook-card>div:has(._df_thumb){grid-column:1;grid-row:1/3}.bia-flipbook-card ._df_thumb{width:120px!important;height:160px!important}.bia-flipbook-card>a{grid-column:2;align-self:start;justify-self:start;margin-top:0}}
@media print{.bia-flipbook-shelf{display:none!important}}

/* v1.4.0 Fantasticamos PDF covers + premium resource shelf */
.bia-flipbook-card{display:flex;flex-direction:column;align-items:center;gap:.55rem;padding:1rem}
.bia-flipbook-card h4{font-size:1.02rem;margin:0}
.bia-flipbook-card>p{margin:0;max-width:29ch;color:var(--muted);font-size:.82rem;line-height:1.45;text-align:left}
.bia-flipbook-preview-stage{position:relative;width:172px;height:223px;border-radius:12px;overflow:hidden;background:#382b7d;box-shadow:0 12px 28px rgba(30,25,72,.24);isolation:isolate}
.bia-flipbook-preview-stage>img{display:block;width:100%;height:100%;object-fit:cover}
.bia-flipbook-preview-stage ._df_thumb{position:absolute!important;inset:0!important;z-index:3!important;display:block!important;float:none!important;width:100%!important;max-width:none!important;height:100%!important;margin:0!important;opacity:.01!important;cursor:pointer}
.bia-flipbook-preview-stage ._df_book-title,.bia-flipbook-preview-stage .df-book-title{display:none!important}
.bia-flipbook-preview-stage:after{content:"Tap to flip";position:absolute;z-index:2;left:50%;bottom:.55rem;transform:translateX(-50%);white-space:nowrap;padding:.28rem .55rem;border-radius:999px;background:rgba(20,18,51,.86);color:#fff;font-size:.7rem;font-weight:850;letter-spacing:.03em;pointer-events:none}
.bia-flipbook-card>a{margin-top:auto!important}
@media(max-width:720px){.bia-flipbook-card{display:flex;align-items:center;text-align:center}.bia-flipbook-card h4{align-self:auto}.bia-flipbook-card>p{text-align:center}.bia-flipbook-preview-stage{width:160px;height:207px}.bia-flipbook-card>a{align-self:auto;justify-self:auto;margin-top:.1rem!important}}