/* Interactive reading mode; original A4 layout remains available for printing. */
.reading-controls{position:sticky;top:59px;z-index:19;display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;background:#f7f4ebee;backdrop-filter:blur(14px);padding:11px 14px;border-bottom:1px solid #d8e4dc}.reading-controls button,.tools-panel button{border:1px solid #bed6c8;background:#fff;border-radius:99px;padding:10px 15px;color:#0d2924;font-weight:750;cursor:pointer}.reading-controls button:hover,.tools-panel button:hover{border-color:#278969}.reading-controls button:disabled{opacity:.4;cursor:not-allowed}#pageStatus{font-size:13px;font-weight:800;color:#0d2924;min-width:110px;text-align:center}.read-hint{text-align:center;color:#52675c;font-size:12px;padding:13px}.book.reader{perspective:1900px}.book.reader .sheet{display:none;margin-bottom:15px;transform-origin:left center}.book.reader .sheet.active{display:flex;animation:pageIn .45s cubic-bezier(.2,.7,.2,1)}.book.reader .sheet.active.backwards{animation:pageBack .4s ease-out}@keyframes pageIn{from{opacity:.65;transform:rotateY(-12deg) translateX(14px)}to{opacity:1;transform:rotateY(0) translateX(0)}}@keyframes pageBack{from{opacity:.7;transform:rotateY(10deg) translateX(-12px)}to{opacity:1;transform:rotateY(0) translateX(0)}}.editorial-photo{margin:8px 0 18px;max-height:155px;overflow:hidden;border-radius:12px;position:relative}.editorial-photo img{width:100%;height:150px;object-fit:cover;display:block}.editorial-photo figcaption{position:absolute;bottom:0;left:0;right:0;color:#fff;background:linear-gradient(transparent,#071c1aa9);padding:17px 10px 7px;font-size:9px}.tools-panel[hidden]{display:none}.tools-panel{position:fixed;inset:0 0 0 auto;width:min(670px,100%);background:#f7f4eb;z-index:50;overflow:auto;box-shadow:-18px 0 70px #051e1980;padding:28px;color:#12352c}.tools-head{display:flex;justify-content:space-between;align-items:start}.tools-head small,.tool-premium span{font-size:10px;font-weight:800;letter-spacing:.15em;color:#2b9073}.tools-head h2{font-family:Georgia,serif;font-size:34px;margin:6px 0}.tools-intro{font-size:13px;color:#617168}.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;margin-top:20px}.tool-card{background:white;border:1px solid #dce8de;border-radius:18px;padding:20px}.tool-card:last-child{grid-column:1/-1}.tool-card h3{margin:0 0 15px;font-size:18px}.tool-card label{display:block;font-size:12px;font-weight:700;margin:12px 0}.tool-card input:not([type=range]),.tool-card textarea{display:block;width:100%;margin-top:6px;border:1px solid #cadacf;padding:11px;border-radius:9px;font:inherit;background:#fcfdfb}.tool-card input[type=range]{display:block;width:100%;accent-color:#26af84}.tool-card label strong{display:block;text-align:right}.result{background:#e6f7ee;border-radius:11px;padding:12px;display:flex;justify-content:space-between;align-items:center;margin:9px 0}.result b{font-size:25px}.tool-card p{color:#64766a;font-size:11px}.split{font-size:12px;color:#315b4a}.tool-card button{background:#0d2924;color:#fff;border:0;margin-right:6px;margin-top:8px}.tool-card button.outline{background:white;color:#0d2924;border:1px solid #bed6c8}.tool-premium{margin:16px 0;background:#0d2924;color:white;padding:24px;border-radius:20px}.tool-premium h3{font:normal 26px Georgia,serif;margin:10px 0}.tool-premium p{color:#c2ddd1;font-size:13px;line-height:1.6}.tool-premium a{display:inline-block;color:#08251d;background:#4be0ad;text-decoration:none;border-radius:50px;padding:11px 18px;font-weight:800}@media(max-width:700px){.reading-controls{top:55px;gap:5px;padding:7px}.reading-controls button{padding:8px 10px;font-size:11px}.read-hint{display:none}.tool-grid{grid-template-columns:1fr}.tool-card:last-child{grid-column:auto}.tools-panel{padding:17px}.editorial-photo{max-height:100px}.editorial-photo img{height:100px}}@media(prefers-reduced-motion:reduce){.book.reader .sheet.active,.book.reader .sheet.active.backwards{animation:none}}@media print{.reading-controls,.read-hint,.tools-panel{display:none!important}.book.reader .sheet{display:flex!important;animation:none!important}.editorial-photo img{print-color-adjust:exact}}

/* V4: Accessible web-first guide. Reader mode is optional; print remains A4. */
html{scroll-padding-top:132px}.book{max-width:1000px;margin:auto;padding:24px 12px 60px}.book .sheet{width:min(100%,850px);min-height:0;aspect-ratio:auto;overflow:visible;margin:0 auto 20px;padding:52px clamp(22px,7%,76px) 36px;border-radius:13px;box-shadow:0 9px 28px #09221e16}.book .sheet.cover{min-height:650px}.book .sheet .page-foot{margin-top:55px}.book .sheet:target{outline:3px solid #4be0ad;outline-offset:3px}.reading-controls{top:57px}.read-hint{background:#edf3ec}.toc-panel[hidden],.reader-nav[hidden]{display:none!important}.toc-panel{position:fixed;z-index:35;top:114px;left:max(12px,calc((100vw - 950px)/2));width:min(460px,calc(100vw - 24px));max-height:calc(100dvh - 130px);overflow:auto;background:#fff;border:1px solid #c9ddd1;border-radius:18px;box-shadow:0 24px 65px #06261d45;padding:18px}.toc-header{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px}.toc-header button{border:0;background:#eff6f1;padding:8px 11px;border-radius:50%;cursor:pointer}.toc-links{display:grid;gap:5px}.toc-links a{display:flex;justify-content:space-between;gap:12px;padding:11px 12px;border-radius:10px;text-decoration:none;color:#0d2924;font-size:13px}.toc-links a:hover,.toc-links a:focus-visible{background:#e8f7ef}.toc-links small{color:#62756b}.reader-nav{position:sticky;top:112px;z-index:18;display:flex;align-items:center;justify-content:center;gap:12px;padding:9px;background:#eaf4ed}.reader-nav button{border:1px solid #bed6c8;background:#fff;border-radius:30px;padding:9px 18px;cursor:pointer;font-weight:750}.reader-nav button:disabled{opacity:.4;cursor:not-allowed}.reader-nav span{font-size:13px;font-weight:800;min-width:65px;text-align:center}.book.reader{perspective:none}.book.reader .sheet{display:none;animation:none!important;transform:none!important}.book.reader .sheet.active{display:flex;min-height:min(850px,calc(100dvh - 185px));animation:fadeIn .18s ease!important}.book.reader .sheet.active.backwards{animation:fadeIn .18s ease!important}@keyframes fadeIn{from{opacity:.75}to{opacity:1}}.book.reader{position:relative}.reader-hit{position:fixed;top:180px;bottom:35px;width:min(8vw,75px);z-index:8;border:0;background:transparent;cursor:pointer;opacity:.35}.reader-hit:hover{background:#4be0ad22;opacity:1}.reader-hit.left{left:0}.reader-hit.right{right:0}.reader-hit[hidden]{display:none}.reader-hit:focus-visible{outline:3px solid #138e6c}.reading-controls button[aria-pressed=true]{background:#0d2924;color:#fff}@media(max-width:700px){.book .sheet{padding:32px 22px 24px;min-height:0;aspect-ratio:auto}.book .sheet.cover{min-height:540px}.book .sheet h1{font-size:clamp(27px,8vw,39px)}.book .sheet.cover h1{font-size:clamp(39px,10vw,62px)}.book .sheet .page-foot{margin-top:40px}.reader-hit{display:none}.toc-panel{top:105px}.reading-controls{top:51px}.reader-nav{top:99px}.reading-controls button{font-size:12px}}@media(prefers-reduced-motion:reduce){.book.reader .sheet.active{animation:none!important}}@media print{.toc-panel,.reader-nav,.reader-hit{display:none!important}.book{max-width:none;padding:0}.book .sheet,.book.reader .sheet{display:flex!important;width:210mm!important;height:297mm!important;min-height:297mm!important;max-width:none!important;aspect-ratio:auto!important;margin:0!important;border-radius:0!important;box-shadow:none!important;overflow:hidden!important;padding:23mm 22mm 19mm!important;animation:none!important;break-after:page!important}.book .sheet.cover{padding:26mm 23mm!important}.book .sheet:last-child{break-after:auto!important}}

/* V5 — Dark premium controls and viewport-fit reading. */
.reading-controls{background:rgba(9,34,30,.97)!important;color:#effff8!important;border-bottom:1px solid rgba(139,230,191,.22)!important;box-shadow:0 10px 26px rgba(0,20,16,.16)}
.reading-controls button{background:rgba(255,255,255,.065)!important;color:#f4fff9!important;border:1px solid rgba(167,229,202,.24)!important;border-radius:12px!important;transition:background .2s,border-color .2s!important}
.reading-controls button:hover,.reading-controls button:focus-visible{background:rgba(75,224,173,.16)!important;border-color:#4be0ad!important}
.reading-controls button[aria-pressed=true]{background:#4be0ad!important;color:#09221e!important;border-color:#4be0ad!important}
#pageStatus{color:#c8e9d8!important}.read-hint{background:#e6f1e9!important;color:#3e6053!important}
.reader-nav{background:#0c3029!important;color:#f0fff8!important;border-bottom:1px solid #255348!important;top:var(--reader-nav-top,112px)!important}
.reader-nav button{background:#174639!important;color:#f0fff8!important;border-color:#3d7561!important}.reader-nav button:hover{background:#276c55!important}
.toc-panel{background:#102f28!important;border-color:#376c58!important;color:#f0fff8!important;top:var(--toc-top,114px)!important}
.toc-header button{background:#285342!important;color:#fff!important}.toc-links a{color:#ecfff5!important}.toc-links small{color:#9ad3b8!important}.toc-links a:hover,.toc-links a:focus-visible{background:#275c4a!important}
.zoom-controls[hidden]{display:none!important}.zoom-controls{display:flex;gap:4px;align-items:center;border:1px solid rgba(167,229,202,.2);border-radius:13px;padding:3px}.zoom-controls button{padding:6px 11px!important;border:0!important;min-width:32px}.zoom-controls output{font-size:12px;font-weight:800;min-width:48px;text-align:center;color:#dffbed}
.book.reader{display:flex;flex-direction:column;align-items:center;max-width:none!important;padding:14px 12px 30px!important;min-height:calc(100dvh - 180px)}
.book.reader .sheet.active{display:flex!important;width:850px!important;max-width:none!important;min-height:0!important;height:auto!important;margin:0 auto!important;flex-shrink:0;overflow:visible!important;box-shadow:0 18px 55px rgba(9,34,30,.16)}
.book.reader .sheet.active.cover{min-height:650px!important}
@media(max-width:700px){.reading-controls{justify-content:center}.reading-controls button{font-size:11px!important;padding:8px!important}.zoom-controls button{padding:5px 8px!important}.zoom-controls output{min-width:38px;font-size:11px}.reader-nav{top:var(--reader-nav-top,112px)!important}}
@media print{.zoom-controls{display:none!important}.book.reader{display:block!important;min-height:0!important;padding:0!important}.book.reader .sheet,.book.reader .sheet.active{zoom:1!important;width:210mm!important;min-height:297mm!important;height:297mm!important;overflow:hidden!important}}

/* V6 — visuelle Lernhilfen: kompakt, responsiv, druckfähig */
.visual-photo{max-height:128px!important;margin:0 0 13px!important;border-radius:14px!important}
.visual-photo img{height:128px!important;object-position:center 43%}
.visual-diagram{background:linear-gradient(135deg,#edf8f1,#f8fbf7);border:1px solid #d7e9de;border-radius:14px;padding:13px 15px;margin:0 0 16px;color:#143a30}
.diagram-label{font-size:9px;font-weight:900;letter-spacing:.16em;color:#298568;margin-bottom:9px}
.visual-diagram small{display:block;font-size:9px;color:#657a6d;margin-top:6px;line-height:1.4}
.visual-steps{display:flex;align-items:stretch;gap:6px}
.visual-steps>span{flex:1;min-width:0;border-radius:9px;background:#fff;border:1px solid #dcebe0;padding:10px 6px;font-size:10px;text-align:center;color:#2e8d6b;font-weight:800}
.visual-steps b{display:block;font-size:11px;color:#133c31}
.visual-steps i{align-self:center;font-style:normal;color:#399a7b}
.visual-steps small{font-weight:400}
.visual-funnel{display:grid;gap:5px;justify-items:center}.visual-funnel div{width:var(--w);text-align:center;background:#1a5a47;color:#fff;border-radius:7px;padding:6px;font-size:11px;font-weight:750}.visual-funnel div:nth-child(2){background:#2a9370}.visual-funnel div:nth-child(3){background:#75cba6;color:#0d3227}
.visual-score{display:grid;grid-template-columns:100px 1fr;gap:8px;align-items:center;font-size:10px}.visual-score>div{height:9px;background:#d9e9df;border-radius:20px;overflow:hidden}.visual-score b{display:block;height:100%;background:linear-gradient(90deg,#18624d,#56d9a1);border-radius:20px}
.visual-equation,.visual-decisions,.visual-timeline{display:flex;align-items:center;gap:8px}.visual-equation span{flex:1;text-align:center;padding:9px 5px;border-radius:8px;background:white;border:1px solid #dcebe0;font-size:10px;font-weight:800}.visual-equation .highlight{background:#164b3d;color:#fff}.visual-equation>b{font-size:15px;color:#269a74}
.visual-timeline>div{flex:1;border-left:3px solid #35b488;padding:6px 10px;background:#fff;border-radius:0 8px 8px 0}.visual-timeline strong{display:block;font-size:16px}.visual-timeline span{font-size:10px}
.visual-decisions>span{flex:1;background:#fff;border-radius:9px;padding:9px 8px;font-size:13px;color:#2b9b73}.visual-decisions b{display:block;color:#143c30;font-size:10px}.visual-decisions small{font-size:9px}
@media(max-width:600px){.visual-steps{gap:3px}.visual-steps>span{font-size:9px;padding:8px 3px}.visual-steps b{font-size:9px}.visual-equation{gap:3px}.visual-equation span{font-size:9px;padding:7px 2px}.visual-photo{max-height:110px!important}.visual-photo img{height:110px!important}}
@media print{.visual-diagram{break-inside:avoid;print-color-adjust:exact;-webkit-print-color-adjust:exact}.visual-photo{break-inside:avoid}}