/* Edition 3: large, legible photographic illustration panels. */
.p-step-art{background:#f4efe4;border:0;overflow:hidden;display:block;width:100%;padding:0}
.p-step-art img{display:block;width:100%;height:auto;max-height:560px;object-fit:contain;margin:0 auto}
.p-side-photo img{object-fit:contain;background:#f5f0e7;max-height:280px}
.i3-reference{border:1px solid var(--line);border-radius:18px;overflow:hidden;padding:22px;margin:22px 0;background:var(--card)}
.i3-reference-grid,.i3-sequence-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.i3-reference-grid.i3-single{grid-template-columns:1fr}
.i3-figure{margin:0;min-width:0;border:1px solid var(--line);border-radius:14px;background:var(--card);overflow:hidden}
.i3-image-button{position:relative;padding:0;display:block;width:100%;border:0;background:#f5f0e7;cursor:zoom-in}
.i3-image-button img{display:block;width:100%;height:auto;max-height:560px;object-fit:contain}
.i3-enlarge{position:absolute;right:10px;bottom:10px;display:grid;place-items:center;width:32px;height:32px;border-radius:50%;background:#ffffffe8;color:#213e32;box-shadow:0 2px 10px #0002;font-size:21px}
.i3-figure figcaption{padding:13px 16px;font-size:14px;line-height:1.6;color:var(--text)}
.i3-credit{font-size:12px;color:var(--muted);margin-bottom:0}
.i3-sequence{margin-top:18px;border:1px solid var(--line);border-radius:14px;background:var(--card);padding:16px}
.i3-sequence summary{font-weight:700;cursor:pointer}.i3-sequence summary span{font-weight:400;color:var(--muted);margin-inline-start:12px}
.i3-sequence[open] summary{margin-bottom:18px}
.i3-library-header{padding:30px 0 14px;max-width:780px}.i3-library-header h1{font-size:clamp(30px,4vw,48px);margin:10px 0}.i3-library-header p{color:var(--muted);line-height:1.8;font-size:17px}
.i3-library-filters{display:grid;grid-template-columns:2fr 1fr;gap:20px;margin:18px 0}.i3-library-filters label{font-size:14px;font-weight:700}.i3-library-filters input,.i3-library-filters select{display:block;width:100%;min-height:46px;margin-top:8px;padding:10px 14px;border:1px solid var(--line);border-radius:10px;background:var(--card);color:var(--text);font:inherit}
.i3-library-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin:20px 0 50px}
.i3-library-card{border:1px solid var(--line);border-radius:17px;overflow:hidden;background:var(--card);min-width:0;transition:box-shadow .2s,transform .2s}
.i3-library-card:hover{box-shadow:0 8px 24px #182d2214;transform:translateY(-2px)}
.i3-library-cover{display:block;border:0;padding:0;position:relative;width:100%;aspect-ratio:4/3;background:#f5f0e7;cursor:zoom-in}
.i3-library-cover img{width:100%;height:100%;object-fit:contain;display:block}.i3-library-cover>span{position:absolute;bottom:10px;left:10px;background:#fffe;width:28px;height:28px;border-radius:50%;font-size:21px;color:#213e32}
.i3-library-copy{padding:18px}.i3-library-copy small{color:var(--muted);font-size:12px}.i3-library-copy h2{font-size:19px;margin:8px 0 14px;line-height:1.5}
.i3-library-copy button{border:0;padding:0;background:none;color:var(--text);font:inherit;text-align:start;cursor:pointer}.i3-guide-link{font-size:13px!important;color:var(--accent)!important}
.i3-morse-strip{display:flex;justify-content:center;gap:22px;border-radius:12px;background:#18392d;color:#fff;padding:20px;margin-top:20px;text-align:center}
.i3-morse-strip b{display:block;font-size:20px;color:#e5c78d;margin-bottom:10px}.i3-morse-strip span{white-space:nowrap;letter-spacing:1px}
#visualZoom{width:min(1100px,96vw);max-width:96vw;background:var(--card);color:var(--text);border:1px solid var(--line);padding:0;border-radius:15px;max-height:94vh}
#visualZoom header{position:sticky;top:0;background:var(--card);z-index:2;display:flex;align-items:center;justify-content:space-between;gap:15px;padding:15px}
.i3-zoom-stage{overflow:auto;max-height:75vh;direction:ltr;background:#f5f0e7}
#visualZoomImage{display:block;margin:0 auto;max-width:none}
.i3-zoom-toolbar{display:flex;align-items:center;justify-content:center;gap:12px;padding:8px;background:var(--card);border-bottom:1px solid var(--line)}
.i3-zoom-toolbar button{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:8px;min-height:38px;padding:6px 12px;cursor:pointer}
#visualZoomCredit{padding:12px 16px;font-size:12px;line-height:1.6}
@media(max-width:850px){.i3-library-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.i3-library-grid{grid-template-columns:1fr;gap:20px}.i3-library-filters{grid-template-columns:1fr;gap:12px}.i3-reference-grid,.i3-sequence-grid{grid-template-columns:1fr}.i3-reference{padding:14px}.p-step-art img{max-height:460px}.i3-morse-strip{gap:12px;padding:15px 8px;font-size:13px}#visualZoom{max-width:96vw}}