:root {
  --ink: #f5fbff;
  --muted: #a9c1d1;
  --panel: rgba(13, 34, 52, 0.78);
  --line: rgba(211, 238, 250, 0.16);
  --accent: #ffd45c;
  --accent-rgb: 255, 212, 92;
  --deep: #071420;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; overflow-x: hidden; }
body {
  background: #071420;
  color: var(--ink);
  font-family: "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; }

.learning-path {
  --accent: #ffd45c;
  --accent-rgb: 255, 212, 92;
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(circle at 78% 15%, rgba(var(--accent-rgb), .12), transparent 28%),
    linear-gradient(145deg, #081a2a 0%, #07131f 55%, #0a2030 100%);
  transition: background 700ms ease;
}

.tone-blue { --accent:#70d5ff; --accent-rgb:112,213,255; }
.tone-indigo { --accent:#a6a7ff; --accent-rgb:166,167,255; }
.tone-lime { --accent:#b9e46d; --accent-rgb:185,228,109; }
.tone-coral { --accent:#ff8f74; --accent-rgb:255,143,116; }
.tone-cyan { --accent:#6ce0da; --accent-rgb:108,224,218; }
.tone-violet { --accent:#c296ff; --accent-rgb:194,150,255; }
.tone-orange { --accent:#ffb34d; --accent-rgb:255,179,77; }
.tone-rose { --accent:#ff9ca0; --accent-rgb:255,156,160; }
.tone-red { --accent:#ff716b; --accent-rgb:255,113,107; }
.tone-mint { --accent:#70dfae; --accent-rgb:112,223,174; }
.tone-navy { --accent:#7eb5e7; --accent-rgb:126,181,231; }
.tone-yellow { --accent:#ffe35a; --accent-rgb:255,227,90; }
.tone-spectrum { --accent:#d39cff; --accent-rgb:211,156,255; }
.tone-teal { --accent:#73d6d6; --accent-rgb:115,214,214; }

.ambient { position: absolute; pointer-events: none; border-radius: 999px; filter: blur(2px); z-index: -1; }
.ambient-one { width: 38vw; height: 38vw; right: -18vw; top: 18vh; border: 1px solid rgba(var(--accent-rgb), .18); box-shadow: 0 0 100px rgba(var(--accent-rgb), .05); }
.ambient-two { width: 18vw; height: 18vw; left: -8vw; bottom: 8vh; background: rgba(var(--accent-rgb), .035); }

.topbar {
  height: 84px;
  padding: 0 clamp(22px, 4vw, 72px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 6;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark { width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; color: #101b22; background: var(--accent); box-shadow: 0 8px 30px rgba(var(--accent-rgb), .16); }
.brand > span:last-child { display: flex; flex-direction: column; line-height: 1.05; }
.brand strong { font-size: 13px; letter-spacing: .11em; }
.brand small { color: var(--muted); font-size: 12px; margin-top: 5px; }
.path-title { color: var(--muted); font-size: 13px; letter-spacing: .14em; text-transform: uppercase; }
.page-count { justify-self: end; display: flex; gap: 8px; align-items: baseline; font-size: 14px; color: var(--muted); font-variant-numeric: tabular-nums; }
.page-count span { color: var(--ink); font-size: 24px; font-weight: 700; }
.page-count i { color: var(--accent); font-style: normal; }
.progress-track { height: 3px; width: 100%; background: rgba(255,255,255,.04); position: relative; z-index: 6; }
.progress-track span { display: block; height: 100%; background: var(--accent); transition: width .55s cubic-bezier(.2,.8,.2,1); box-shadow: 0 0 18px rgba(var(--accent-rgb), .6); }

.slide {
  width: min(1500px, 100%);
  min-height: calc(100dvh - 170px);
  margin: 0 auto;
  padding: clamp(28px, 4vw, 68px) clamp(22px, 5vw, 84px) 106px;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(350px, .85fr);
  align-items: center;
  gap: clamp(34px, 5vw, 90px);
  animation: slideIn .55s cubic-bezier(.2,.75,.25,1) both;
}
@keyframes slideIn { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
.visual-column { min-width: 0; min-height: 480px; display: grid; place-items: center; }
.visual-column::before { content: ""; position: absolute; width: min(58vw, 820px); aspect-ratio: 1.45; border-radius: 44%; background: rgba(var(--accent-rgb), .035); filter: blur(35px); z-index: -1; }
.content-column { max-width: 520px; position: relative; z-index: 2; }
.eyebrow { margin: 0 0 17px; color: var(--accent); font-size: 12px; font-weight: 750; letter-spacing: .18em; text-transform: uppercase; }
.content-column h1 { margin: 0; max-width: 10em; font-size: clamp(38px, 4.45vw, 68px); line-height: .98; letter-spacing: -.045em; text-wrap: balance; }
.memory-card { margin-top: clamp(27px, 4vh, 46px); padding: 22px 24px 24px; border-left: 3px solid var(--accent); background: linear-gradient(100deg, rgba(var(--accent-rgb), .11), rgba(255,255,255,.025)); border-radius: 0 18px 18px 0; }
.memory-card span { color: var(--accent); font-size: 10px; font-weight: 800; letter-spacing: .2em; }
.memory-card p { margin: 9px 0 0; color: #eef8fd; font-size: clamp(18px, 1.55vw, 23px); line-height: 1.44; font-weight: 520; text-wrap: pretty; }
.fact-row { margin-top: 20px; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; }
.fact-row span { min-height: 43px; padding: 10px 14px; display: flex; align-items: center; gap: 13px; background: rgba(8,26,41,.82); color: #c4d8e4; font-size: 13px; }
.fact-row b { color: var(--accent); font-size: 10px; letter-spacing: .08em; }

.diagram { width: 100%; max-width: 840px; height: auto; overflow: visible; filter: drop-shadow(0 30px 38px rgba(0,0,0,.2)); }
.svgLabel { fill: #edf8fc; font-size: 15px; font-weight: 750; letter-spacing: .12em; }
.svgDarkLabel { fill: #4b3500; font-size: 14px; font-weight: 800; letter-spacing: .08em; }
.svgCaption { fill: #b9d0dc; font-size: 14px; font-weight: 600; }
.svgTiny { fill: #b9d0dc; font-size: 12px; }
.digitalText { fill: #62e0b4; font-size: 22px; font-family: monospace; font-weight: 700; }
.angleText { fill: white; font-size: 25px; font-style: italic; }

/* Ruhige Fachanimationen: Bewegung zeigt einen Vorgang, nicht bloß Dekoration. */
.earth-surface { transform-origin:500px 235px; animation:earthSpin 14s linear infinite; }
.rotation-arrow,.orbit-path { animation:dashFlow 7s linear infinite; }
.season-earth { animation:seasonFocus 9.6s ease-in-out infinite; }
.season-halo { fill:transparent; stroke:#ffd75a; stroke-width:3; opacity:0; }
.sun-pulse { transform-origin:380px 230px; animation:sunPulse 3.8s ease-in-out infinite; }
.thermometer-fill,.liquid-fill { transform-box:fill-box; transform-origin:center bottom; animation:liquidRise 5.5s ease-in-out infinite; }
.bimetal-needle { transform-origin:90px 130px; animation:needleSweep 5.5s ease-in-out infinite; }
.sensor-reading { animation:sensorBlink 3.2s ease-in-out infinite; }
.particle { transform-box:fill-box; transform-origin:center; }
.cold-particle { animation:coldJitter 2.4s ease-in-out infinite alternate; }
.warm-particle { animation:warmJitter 1.25s ease-in-out infinite alternate; }
.flow-arrow,.heat-flow,.heat-flow path,.light-rays path,.reflection-ray,.white-light,.spectrum-ray,.red-reflection,.eye-ray { stroke-dasharray:18 12; animation:dashFlow 2.7s linear infinite; }
.heat-convection { animation-duration:3.4s; }
.heat-radiation,.heat-radiation path { animation-duration:2.1s; }
.radiant-source,.lamp-glow { transform-box:fill-box; transform-origin:center; animation:radiantPulse 2.8s ease-in-out infinite; }
.light-field { animation:fieldBreathe 4.4s ease-in-out infinite; }
.shadow-space { animation:shadowBreathe 4.4s ease-in-out infinite; }
.reflection-ray { stroke-dasharray:620; stroke-dashoffset:620; animation:rayTravel 4.4s ease-in-out infinite; }
.outgoing-ray { animation-delay:1.35s; }
.white-light { stroke-dasharray:240; animation:dashFlow 2.4s linear infinite; }
.spectrum-ray { stroke-dasharray:290; stroke-dashoffset:290; animation:spectrumReveal 4.8s ease-in-out infinite; }
.red-reflection { stroke-dasharray:90; animation:dashFlow 1.8s linear infinite reverse; }

@keyframes earthSpin { to { transform:rotate(360deg); } }
@keyframes dashFlow { to { stroke-dashoffset:-120; } }
@keyframes seasonFocus { 0%,18% { filter:drop-shadow(0 0 13px #ffd75a); } 24%,100% { filter:none; } }
@keyframes sunPulse { 0%,100% { transform:scale(.94); opacity:.08; } 50% { transform:scale(1.12); opacity:.22; } }
@keyframes liquidRise { 0%,12% { transform:scaleY(.38); } 55%,68% { transform:scaleY(1); } 100% { transform:scaleY(.38); } }
@keyframes needleSweep { 0%,12% { transform:rotate(-28deg); } 55%,68% { transform:rotate(18deg); } 100% { transform:rotate(-28deg); } }
@keyframes sensorBlink { 0%,100% { opacity:.55; } 45%,70% { opacity:1; filter:drop-shadow(0 0 6px #62e0b4); } }
@keyframes coldJitter { from { transform:translate(-2px,1px); } to { transform:translate(2px,-1px); } }
@keyframes warmJitter { 0% { transform:translate(-8px,5px); } 35% { transform:translate(7px,-7px); } 70% { transform:translate(5px,8px); } 100% { transform:translate(-7px,-4px); } }
@keyframes radiantPulse { 0%,100% { transform:scale(.94); filter:drop-shadow(0 0 2px #ffd24f); } 50% { transform:scale(1.08); filter:drop-shadow(0 0 16px #ffd24f); } }
@keyframes fieldBreathe { 0%,100% { opacity:.55; } 50% { opacity:.9; } }
@keyframes shadowBreathe { 0%,100% { opacity:.78; } 50% { opacity:.98; } }
@keyframes rayTravel { 0% { stroke-dashoffset:620; opacity:0; } 18%,68% { opacity:1; } 82%,100% { stroke-dashoffset:0; opacity:0; } }
@keyframes spectrumReveal { 0%,10% { stroke-dashoffset:290; opacity:0; } 35%,76% { stroke-dashoffset:0; opacity:1; } 100% { stroke-dashoffset:0; opacity:.2; } }

.photo-visual { width: 100%; max-width: 880px; aspect-ratio: 1.48; position: relative; overflow: hidden; border-radius: clamp(24px,3vw,44px); border: 1px solid rgba(255,255,255,.14); box-shadow: 0 35px 80px rgba(0,0,0,.38); background: #0d2639; }
.photo-visual::after { content:""; position:absolute; inset:0; pointer-events:none; box-shadow: inset 0 0 0 1px rgba(255,255,255,.05), inset 0 -80px 100px rgba(5,18,28,.28); }
.photo-visual img { width:100%; height:100%; object-fit:cover; display:block; }
.hero-photo img { animation:heroDrift 15s ease-in-out infinite alternate; }
.energy-photo img { object-position:center; }
.energy-photo::before,.protection-photo::before { content:""; position:absolute; inset:-25%; z-index:1; pointer-events:none; background:linear-gradient(110deg,transparent 39%,rgba(255,220,96,.25) 49%,transparent 59%); transform:translateX(-52%); animation:sunSweep 7s ease-in-out infinite; }
.image-tags { position:absolute; left:20px; right:20px; bottom:18px; display:flex; justify-content:space-between; gap:8px; z-index:1; }
.image-tags span { padding:8px 12px; border:1px solid rgba(255,255,255,.24); border-radius:999px; background:rgba(4,18,28,.66); backdrop-filter:blur(12px); color:white; font-size:12px; font-weight:700; }
.image-tags span { animation:tagFocus 8s ease-in-out infinite; }.image-tags span:nth-child(2){animation-delay:2s}.image-tags span:nth-child(3){animation-delay:4s}.image-tags span:nth-child(4){animation-delay:6s}
.lens-inset { position:absolute; top:18px; right:18px; z-index:2; min-width:210px; padding:11px 14px; display:flex; align-items:center; gap:10px; border:1px solid rgba(255,255,255,.28); border-radius:16px; background:rgba(4,18,28,.72); backdrop-filter:blur(12px); color:#dbeaf0; font-size:11px; line-height:1.25; }
.lens-inset svg { width:82px; height:52px; fill:none; stroke:#ffd95d; stroke-width:2.2; stroke-linecap:round; }
.lens-inset b { color:#ffd95d; font-size:12px; }
.lens-inset svg path { stroke-dasharray:80; animation:dashFlow 2.5s linear infinite; }
@keyframes heroDrift { from { transform:scale(1); } to { transform:scale(1.035); } }
@keyframes sunSweep { 0%,18% { transform:translateX(-55%); opacity:0; } 45%,70% { opacity:1; } 88%,100% { transform:translateX(55%); opacity:0; } }
@keyframes tagFocus { 0%,16% { color:#14202a; background:var(--accent); transform:translateY(-4px); } 24%,100% { color:white; background:rgba(4,18,28,.66); transform:none; } }

.temperature-stage { width:100%; max-width:760px; min-height:480px; position:relative; display:grid; grid-template-columns:1fr 190px 1fr; align-items:center; gap:26px; }
.temperature-stage > svg { width:190px; height:480px; overflow:visible; filter:drop-shadow(0 22px 30px rgba(0,0,0,.3)); }
.temperature-context { min-height:180px; padding:27px 18px; border-radius:28px; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; border:1px solid rgba(255,255,255,.12); }
.temperature-context.cold { background:linear-gradient(160deg,rgba(44,164,231,.24),rgba(10,50,78,.55)); }
.temperature-context.hot { background:linear-gradient(160deg,rgba(255,109,80,.25),rgba(82,32,23,.55)); }
.temperature-context span { font-size:42px; }
.temperature-context strong { font-size:31px; margin-top:10px; }
.temperature-context small { color:#bad0dc; margin-top:8px; }
.micro-note { position:absolute; right:20px; bottom:40px; color:#8da8b8; font-size:11px; }

.three-panels { width:100%; max-width:820px; display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.instrument-card { min-height:440px; padding:20px 15px 24px; display:flex; flex-direction:column; align-items:center; justify-content:flex-end; border-radius:30px; border:1px solid rgba(255,255,255,.11); background:linear-gradient(160deg,rgba(var(--accent-rgb),.1),rgba(12,37,55,.72)); box-shadow:0 24px 50px rgba(0,0,0,.2); }
.instrument-card svg { width:100%; height:270px; }
.instrument-card strong { color:white; font-size:18px; }
.instrument-card span { margin-top:7px; color:#a9c3d0; font-size:12px; }

.eye-visual-v2 { width:100%; max-width:900px; aspect-ratio:1.777; position:relative; overflow:hidden; border:1px solid rgba(255,255,255,.15); border-radius:36px; background:#071729; box-shadow:0 35px 80px rgba(0,0,0,.4); }
.eye-visual-v2::after { content:""; position:absolute; inset:0; z-index:5; pointer-events:none; border-radius:inherit; box-shadow:inset 0 0 0 1px rgba(255,255,255,.05),inset 0 -75px 90px rgba(3,12,20,.3); }
.eye-visual-v2 > img { width:100%; height:100%; object-fit:cover; display:block; }
.eye-optics { position:absolute; inset:0; z-index:2; width:100%; height:100%; overflow:visible; }
.eye-ray { fill:none; stroke:#ffe36d; stroke-width:5; stroke-linecap:round; filter:url(#rayGlow); stroke-dasharray:1350; stroke-dashoffset:1350; animation:eyeRayTravel 5.2s ease-in-out infinite; }
.eye-ray-center { animation-delay:.16s; }.eye-ray-lower { animation-delay:.32s; }
.focus-point { fill:#fff8a8; transform-origin:1280px 470px; animation:focusPulse 5.2s ease-in-out infinite; filter:drop-shadow(0 0 13px #ffe36d); }
.eye-label { position:absolute; z-index:4; padding:7px 10px; border:1px solid rgba(255,255,255,.27); border-radius:10px; color:#f2fbff; background:rgba(4,18,29,.76); backdrop-filter:blur(9px); box-shadow:0 7px 18px rgba(0,0,0,.25); font-size:10px; font-weight:800; letter-spacing:.02em; }
.eye-cornea { left:2%; top:20%; }.eye-pupil { left:2%; top:47%; }.eye-lens { left:31%; top:7%; }.eye-retina { right:4%; top:17%; }.eye-nerve { right:3%; bottom:17%; }.eye-vitreous { left:59%; bottom:5%; }
.eye-key { position:absolute; left:12px; bottom:11px; z-index:4; display:flex; gap:8px; }
.eye-key span { padding:6px 9px; display:flex; align-items:center; gap:6px; border-radius:9px; color:#dcecf2; background:rgba(4,18,29,.76); font-size:8px; font-weight:750; }
.eye-key i { width:19px; height:3px; border-radius:3px; background:#ffe36d; box-shadow:0 0 6px #ffe36d; }.eye-key b { width:8px; height:8px; border-radius:50%; background:#fff8a8; box-shadow:0 0 7px #ffe36d; }
@keyframes eyeRayTravel { 0%,8% { stroke-dashoffset:1350; opacity:0; } 42%,76% { stroke-dashoffset:0; opacity:.95; } 100% { stroke-dashoffset:0; opacity:0; } }
@keyframes focusPulse { 0%,40%,100% { transform:scale(.45); opacity:.3; } 58%,78% { transform:scale(1.45); opacity:1; } }
.skin-visual-v2 { width:100%; max-width:900px; aspect-ratio:1.5; position:relative; overflow:hidden; border:1px solid rgba(255,255,255,.14); border-radius:36px; background:radial-gradient(circle at 52% 42%,#6b3529,#0a1118 72%); box-shadow:0 35px 80px rgba(0,0,0,.4); }
.skin-visual-v2::after { content:""; position:absolute; inset:0; pointer-events:none; border-radius:inherit; box-shadow:inset 0 0 0 1px rgba(255,255,255,.05),inset 0 -85px 95px rgba(4,14,22,.46); }
.skin-visual-v2 > img { width:100%; height:100%; object-fit:cover; display:block; }
.skin-layers { position:absolute; top:15%; right:2%; bottom:17%; z-index:3; width:148px; display:flex; flex-direction:column; justify-content:space-between; }
.skin-layers > span { padding:8px 10px 8px 25px; position:relative; border:1px solid rgba(255,255,255,.25); border-radius:12px; color:white; background:rgba(7,20,30,.78); backdrop-filter:blur(10px); font-size:12px; font-weight:800; box-shadow:0 9px 24px rgba(0,0,0,.22); }
.skin-layers i { position:absolute; left:10px; top:13px; width:8px; height:8px; border-radius:50%; background:#ffb195; box-shadow:0 0 10px currentColor; }
.skin-layers small { display:block; margin-top:3px; color:#a9c1cf; font-size:8px; font-weight:650; letter-spacing:.03em; }
.skin-layers .layer-dermis i { background:#db4f69; }
.skin-layers .layer-hypodermis i { background:#f4bd37; }
.skin-pin { position:absolute; z-index:4; width:29px; height:29px; display:grid; place-items:center; border:2px solid white; border-radius:50%; color:#15202a; background:var(--accent); font-size:11px; font-weight:900; box-shadow:0 7px 18px rgba(0,0,0,.38); }
.pin-sebum { left:42%; top:39%; }.pin-sweat { left:57%; top:58%; }.pin-touch { left:69%; top:69%; }.pin-vessel { left:48%; top:77%; }
.skin-legend { position:absolute; left:16px; right:16px; bottom:14px; z-index:3; min-height:46px; padding:8px 12px; display:grid; grid-template-columns:repeat(4,1fr); gap:9px; border:1px solid rgba(255,255,255,.19); border-radius:14px; background:rgba(5,17,26,.8); backdrop-filter:blur(12px); }
.skin-legend span { display:flex; align-items:center; gap:7px; color:#dceaf0; font-size:9px; font-weight:750; white-space:nowrap; }
.skin-legend b { width:21px; height:21px; display:grid; place-items:center; flex:0 0 auto; border-radius:50%; color:#16222a; background:var(--accent); font-size:9px; }

.hazard-grid { width:100%; max-width:820px; display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.hazard-card { min-height:350px; padding:34px 22px; border-radius:32px; display:flex; flex-direction:column; align-items:center; justify-content:center; text-align:center; border:1px solid rgba(255,255,255,.12); background:#102c41; box-shadow:0 28px 55px rgba(0,0,0,.22); }
.hazard-card.uv { background:linear-gradient(160deg,#5b3928,#261b1e); }
.hazard-card.cut { background:linear-gradient(160deg,#4b3042,#231b2b); }
.hazard-card.chemical { background:linear-gradient(160deg,#234c4d,#13272e); }
.hazard-icon { width:118px; height:118px; margin-bottom:28px; display:grid; place-items:center; border-radius:50%; color:var(--accent); background:rgba(255,255,255,.075); font-size:72px; line-height:1; }
.hazard-card strong { font-size:19px; }
.hazard-card span { margin-top:10px; color:#b8cbd5; font-size:12px; line-height:1.5; }

.controls { position:fixed; z-index:12; left:50%; bottom:20px; transform:translateX(-50%); width:min(770px,calc(100% - 28px)); height:66px; padding:8px; display:flex; justify-content:space-between; align-items:center; gap:14px; border:1px solid rgba(255,255,255,.14); border-radius:22px; background:rgba(7,22,34,.82); backdrop-filter:blur(20px); box-shadow:0 22px 55px rgba(0,0,0,.38); }
.control-group { display:flex; align-items:center; gap:6px; }
.icon-button,.text-control,.voice-control,.speed-control { height:48px; border:0; color:#d8e8ef; background:transparent; border-radius:15px; cursor:pointer; transition:background .2s,color .2s,transform .15s; }
.icon-button { width:48px; display:grid; place-items:center; }
.icon-button:hover,.text-control:hover,.voice-control:hover,.speed-control:hover { background:rgba(255,255,255,.08); color:white; }
.icon-button:active,.text-control:active,.voice-control:active,.speed-control:active { transform:scale(.96); }
.icon-button.active { color:#07141e; background:var(--accent); }
.icon-button svg { width:23px; height:23px; fill:none; stroke:currentColor; stroke-width:1.9; stroke-linecap:round; stroke-linejoin:round; }
.text-control { padding:0 13px; font-size:12px; font-weight:700; }
.voice-control { padding:0 13px; color:var(--accent); font-size:12px; font-weight:800; }
.speed-control { width:48px; font-size:12px; font-weight:800; color:var(--accent); }
.motion-paused *, .motion-paused *::before, .motion-paused *::after { animation-play-state:paused !important; }

.voice-menu { position:fixed; left:50%; bottom:102px; z-index:20; width:min(420px,calc(100% - 32px)); padding:20px; transform:translateX(-50%); border:1px solid rgba(255,255,255,.14); border-radius:22px; background:rgba(8,27,42,.97); backdrop-filter:blur(24px); box-shadow:0 24px 70px rgba(0,0,0,.45); animation:voiceRise .24s ease both; }
@keyframes voiceRise { from{opacity:0;transform:translate(-50%,10px)} to{opacity:1;transform:translate(-50%,0)} }
.voice-menu > div { display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; }
.voice-menu > div span { color:var(--accent); font-size:11px; font-weight:800; letter-spacing:.13em; text-transform:uppercase; }
.voice-menu > div button { width:32px; height:32px; border:0; border-radius:50%; color:#dcecf3; background:rgba(255,255,255,.07); cursor:pointer; font-size:20px; }
.voice-menu > p { margin:6px 0 12px; color:#91acba; font-size:12px; }
.voice-menu > button:not(:first-child) { width:100%; min-height:42px; margin-top:5px; padding:8px 12px; display:flex; justify-content:space-between; align-items:center; border:1px solid transparent; border-radius:12px; color:#d8e8ef; background:rgba(255,255,255,.04); cursor:pointer; text-align:left; font-size:12px; }
.voice-menu > button.selected { border-color:rgba(var(--accent-rgb),.55); background:rgba(var(--accent-rgb),.1); color:white; }
.voice-menu > button b { color:var(--accent); font-size:9px; letter-spacing:.08em; text-transform:uppercase; }
.voice-menu > small { display:block; padding:12px; color:#ff9d91; }

.transcript { position:fixed; right:clamp(16px,4vw,54px); bottom:102px; z-index:20; width:min(510px,calc(100% - 32px)); padding:22px 24px; border:1px solid rgba(255,255,255,.14); border-radius:22px; background:rgba(8,27,42,.96); backdrop-filter:blur(24px); box-shadow:0 24px 70px rgba(0,0,0,.45); animation:slideIn .25s ease both; }
.transcript > div { display:flex; justify-content:space-between; align-items:center; }
.transcript span { color:var(--accent); font-size:11px; font-weight:800; letter-spacing:.13em; text-transform:uppercase; }
.transcript button { width:32px; height:32px; border:0; border-radius:50%; color:#dcecf3; background:rgba(255,255,255,.07); cursor:pointer; font-size:20px; }
.transcript p { margin:13px 0 0; color:#d7e7ed; font-size:15px; line-height:1.62; }
.transcript small { display:block; margin-top:12px; color:#ff9d91; }

.msl-intro { position:fixed; inset:0; z-index:50; display:grid; place-items:center; padding:20px; background:#06131f; transition:opacity .42s ease; }
.msl-intro.finishing { opacity:0; pointer-events:none; }
.msl-intro-card { position:relative; width:min(520px,calc(100vmin - 48px)); aspect-ratio:1; overflow:hidden; border:5px solid rgba(255,255,255,.98); border-radius:22px; background:#101a29; box-shadow:0 18px 55px rgba(0,0,0,.42); }
.msl-intro-video { display:block; width:100%; height:100%; object-fit:cover; background:#101a29; }
.msl-intro-start { position:absolute; left:50%; bottom:8%; z-index:3; min-width:48%; padding:11px 18px; border:3px solid white; border-radius:999px; color:white; background:rgba(0,91,218,.94); box-shadow:0 7px 24px rgba(0,0,0,.38); font:inherit; font-size:clamp(.85rem,1.7vw,1.2rem); font-weight:900; cursor:pointer; transform:translateX(-50%); transition:opacity .18s ease,transform .18s ease,background .18s ease; }
.msl-intro-start:hover,.msl-intro-start:focus-visible { background:#0758c7; transform:translateX(-50%) scale(1.04); }
.msl-intro.playing .msl-intro-start { opacity:0; pointer-events:none; }
.msl-intro-progress { position:absolute; right:0; bottom:0; left:0; z-index:4; height:7px; overflow:hidden; background:rgba(255,255,255,.25); }
.msl-intro-progress-bar { width:0; height:100%; background:#0c8ee7; box-shadow:0 0 10px rgba(255,255,255,.8); }
.msl-intro.counting .msl-intro-progress-bar { animation:introProgress 8s linear forwards; }
@keyframes introProgress { to { width:100%; } }

.start-screen { position:fixed; inset:0; z-index:30; display:grid; place-items:center; padding:20px; overflow:hidden; background:#06131f; }
.start-screen::before { content:""; position:absolute; inset:-20px; z-index:-2; background:linear-gradient(90deg,rgba(4,15,24,.84),rgba(4,15,24,.36)),url('./sun-earth-hero.png') center/cover no-repeat; filter:saturate(.9); }
.start-screen::after { content:""; position:absolute; inset:0; z-index:-1; background:radial-gradient(circle at 50% 35%,rgba(255,211,77,.12),transparent 38%); }
.start-card { width:min(640px,100%); padding:48px 34px 38px; display:flex; flex-direction:column; align-items:center; text-align:center; border:1px solid rgba(255,255,255,.13); border-radius:38px; background:linear-gradient(145deg,rgba(18,49,70,.96),rgba(8,26,41,.96)); box-shadow:0 38px 110px rgba(0,0,0,.5); animation:startRise .7s cubic-bezier(.2,.8,.2,1) both; }
@keyframes startRise { from{opacity:0;transform:translateY(22px) scale(.98)} to{opacity:1;transform:none} }
.start-sun { width:106px; height:106px; display:grid; place-items:center; border-radius:34px; color:#182129; background:#ffd456; box-shadow:0 0 0 12px rgba(255,212,86,.06),0 22px 55px rgba(255,200,45,.18); }
.start-card > p { margin:30px 0 12px; color:#ffd456; font-size:11px; font-weight:800; letter-spacing:.2em; }
.start-card h2 { margin:0; font-size:clamp(48px,7vw,76px); line-height:.94; letter-spacing:-.055em; }
.start-note { margin-top:22px; color:#acc3cf; font-size:14px; }
.start-card > button { margin-top:34px; height:60px; padding:0 24px 0 27px; display:flex; align-items:center; gap:16px; border:0; border-radius:18px; color:#13202a; background:#ffd456; font-weight:800; cursor:pointer; box-shadow:0 16px 35px rgba(255,200,50,.16); }
.start-card > button svg { width:23px; height:23px; fill:none; stroke:currentColor; stroke-width:2; stroke-linejoin:round; }
.start-card > small { margin-top:19px; color:#7793a4; font-size:11px; }

@media (max-width: 980px) {
  .slide { grid-template-columns:1fr; gap:22px; padding-top:30px; padding-bottom:112px; align-items:start; }
  .visual-column { min-height:unset; order:1; }
  .content-column { order:2; max-width:none; display:grid; grid-template-columns:1fr 1fr; gap:14px 24px; align-items:start; }
  .eyebrow,.content-column h1 { grid-column:1; }
  .content-column h1 { font-size:clamp(34px,6vw,58px); }
  .memory-card { grid-column:2; grid-row:1 / span 2; margin-top:0; }
  .fact-row { grid-column:1 / -1; grid-template-columns:repeat(3,1fr); }
  .photo-visual { max-width:750px; }
  .diagram { max-height:45vh; }
  .visual-column::before { width:82vw; }
}

@media (max-width: 680px) {
  .topbar { height:66px; padding:0 16px; grid-template-columns:1fr auto; }
  .brand-mark { width:36px;height:36px;border-radius:12px; }
  .brand small,.path-title { display:none; }
  .page-count span { font-size:19px; }
  .slide { min-height:calc(100dvh - 69px); padding:18px 16px 104px; }
  .content-column { display:block; }
  .eyebrow { margin:18px 0 9px; }
  .content-column h1 { font-size:36px; line-height:1.02; }
  .memory-card { margin-top:18px; padding:16px 17px; }
  .memory-card p { font-size:17px; }
  .fact-row { display:none; }
  .visual-column { min-height:250px; }
  .photo-visual { border-radius:24px; aspect-ratio:1.3; }
  .diagram { max-height:39vh; }
  .skin-visual-v2 { aspect-ratio:1.27; border-radius:23px; }
  .eye-visual-v2 { aspect-ratio:1.38; border-radius:23px; }
  .eye-visual-v2 > img { object-position:center; }
  .eye-label { padding:5px 6px; border-radius:7px; font-size:7px; }
  .eye-key { display:none; }
  .skin-layers { width:104px; top:11%; bottom:18%; }
  .skin-layers > span { padding:6px 6px 6px 18px; border-radius:8px; font-size:9px; }
  .skin-layers i { left:6px; top:9px; width:7px; height:7px; }
  .skin-layers small { display:none; }
  .skin-pin { width:22px; height:22px; font-size:8px; }
  .skin-legend { left:7px; right:7px; bottom:7px; min-height:34px; padding:5px; gap:3px; }
  .skin-legend span { gap:3px; font-size:7px; }
  .skin-legend b { width:16px; height:16px; font-size:7px; }
  .three-panels,.hazard-grid { grid-template-columns:repeat(3,1fr); gap:6px; }
  .instrument-card,.hazard-card { min-height:245px; padding:10px 5px 16px; border-radius:17px; }
  .instrument-card svg { height:180px; }
  .instrument-card strong,.hazard-card strong { font-size:12px; }
  .instrument-card span,.hazard-card span { display:none; }
  .hazard-icon { width:70px;height:70px;margin-bottom:18px;font-size:40px; }
  .temperature-stage { min-height:330px; grid-template-columns:1fr 110px 1fr; gap:7px; }
  .temperature-stage > svg { width:110px;height:330px; }
  .temperature-context { min-height:130px;padding:12px 4px;border-radius:18px; }
  .temperature-context span { font-size:24px; }.temperature-context strong{font-size:18px}.temperature-context small{font-size:9px}
  .micro-note { display:none; }
  .controls { bottom:10px; height:60px; border-radius:19px; }
  .icon-button,.text-control,.voice-control,.speed-control { height:44px; }
  .icon-button { width:44px; }
  .text-control { display:none; }
  .voice-control { padding:0 9px; }
  .msl-intro-card { width:min(92vw,390px); border-width:3px; border-radius:14px; }
  .start-card { padding:36px 22px 30px;border-radius:28px; }
  .start-sun { width:84px;height:84px;border-radius:27px; }
  .start-card h2 { font-size:51px; }
  .start-note { font-size:12px; }
  .image-tags { display:none; }
  .lens-inset { min-width:0; padding:7px 9px; top:9px; right:9px; }
  .lens-inset svg { width:54px; height:35px; }
  .lens-inset span { display:none; }
}

@media (prefers-reduced-motion: reduce) {
  *,*::before,*::after { animation-duration:.01ms !important; transition-duration:.01ms !important; scroll-behavior:auto !important; }
}

/* Mensch und Gesundheit: kontrollierte Lehrbuchgrafiken und Funktionsanimationen */
.tone-gold { --accent:#ffd45c; --accent-rgb:255,212,92; }
.tone-slate { --accent:#c6d7df; --accent-rgb:198,215,223; }
.brand-mark svg,.start-symbol svg { fill:none; stroke:currentColor; stroke-width:1.65; stroke-linecap:round; stroke-linejoin:round; }

.photo-stage,.teamwork,.fuel-stage,.balance-stage,.nutrient-stage {
  width:100%; max-width:900px; aspect-ratio:16/9; position:relative; overflow:hidden;
  border:1px solid rgba(255,255,255,.14); border-radius:clamp(24px,3vw,40px);
  background:radial-gradient(circle at 50% 30%,#173b58,#071725 72%);
  box-shadow:0 34px 80px rgba(0,0,0,.38),inset 0 0 0 1px rgba(255,255,255,.035);
}
.photo-stage::after,.nutrient-stage::after {
  content:""; position:absolute; inset:0; z-index:2; pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.045),inset 0 -60px 90px rgba(2,12,20,.22);
}
.photo-stage>img,.nutrient-stage>img { width:100%;height:100%;object-fit:cover;display:block; }

.body-stage>img { animation:bodyBreathe 8s ease-in-out infinite alternate; }
.body-stage.compact>img { transform:scale(1.02); }
.system-label,.bone-label,.spine-label,.muscle-label {
  position:absolute;z-index:4;min-width:150px;padding:9px 12px 9px 28px;border:1px solid rgba(255,255,255,.22);
  border-radius:12px;color:#f4fbff;background:rgba(4,18,30,.8);backdrop-filter:blur(10px);
  box-shadow:0 10px 25px rgba(0,0,0,.25);font-size:12px;font-weight:850;line-height:1.15;
}
.system-label small,.bone-label small,.muscle-label small { display:block;margin-top:4px;color:#9eb9c8;font-size:9px;font-weight:650; }
.system-label i,.muscle-label i { position:absolute;left:11px;top:13px;width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 11px var(--accent); }
.system-label::after,.bone-label::after,.muscle-label::after { content:"";position:absolute;top:50%;width:54px;height:1px;background:linear-gradient(90deg,rgba(255,255,255,.75),transparent); }
.label-nerves{left:3%;top:9%}.label-breath{right:3%;top:25%}.label-blood{left:3%;top:44%}.label-digest{right:3%;bottom:12%}
.label-nerves::after,.label-blood::after{left:100%}.label-breath::after,.label-digest::after{right:100%;transform:rotate(180deg)}
.label-nerves i{background:#c79bff}.label-breath i{background:#70d8ff}.label-blood i{background:#ff716b}.label-digest i{background:#ffb14d}
@keyframes bodyBreathe{from{transform:scale(1)}to{transform:scale(1.018)}}

.teamwork { overflow:visible; }
.teamwork svg { position:absolute;inset:0;width:100%;height:100%;color:#8bd8eb; }
.teamwork .flow { fill:none;stroke:currentColor;stroke-width:7;stroke-linecap:round;marker-end:url(#flowArrow);opacity:.6; }
.teamwork .oxygen{color:#6dd7ff}.teamwork .nutrient{color:#ffb65f}.teamwork .blood{color:#f47a79}
.organ-node { position:absolute;z-index:3;width:150px;min-height:112px;padding:15px 12px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.14);border-radius:24px;background:linear-gradient(155deg,rgba(30,73,101,.95),rgba(8,29,44,.96));box-shadow:0 20px 45px rgba(0,0,0,.26);text-align:center; }
.organ-node span { width:42px;height:42px;display:grid;place-items:center;border-radius:50%;color:#0c1a23;background:var(--accent);font-size:16px;font-weight:900;box-shadow:0 0 22px rgba(var(--accent-rgb),.22); }
.organ-node b{margin-top:8px;font-size:15px}.organ-node small{margin-top:3px;color:#9eb7c5;font-size:9px}
.organ-node.lung{left:3%;top:14%}.organ-node.gut{left:3%;bottom:12%}.organ-node.heart{left:43%;top:50%;transform:translate(-50%,-50%)}.organ-node.cell{right:2%;top:50%;transform:translateY(-50%)}
.flow-dot { position:absolute;z-index:5;width:13px;height:13px;border:2px solid white;border-radius:50%;filter:drop-shadow(0 0 8px currentColor); }
.dot-o{color:#6dd7ff;background:#6dd7ff;offset-path:path("M178 145C270 145 270 235 360 235");animation:flowTravel 3.4s linear infinite}
.dot-n{color:#ffb65f;background:#ffb65f;offset-path:path("M178 360C270 360 270 265 360 265");animation:flowTravel 3.4s linear 1.7s infinite}
.dot-b{color:#f47a79;background:#f47a79;offset-path:path("M470 250C570 250 570 250 655 250");animation:flowTravel 2.7s linear .4s infinite}
.signal-line { position:absolute;left:50%;bottom:5%;transform:translateX(-50%);z-index:4;padding:8px 13px;border-radius:999px;color:#c9b0ef;background:rgba(108,67,147,.24);font-size:10px;font-weight:750;letter-spacing:.05em;white-space:nowrap; }
.signal-line span{display:inline-block;animation:signalBlink 1.4s steps(3,end) infinite}
@keyframes flowTravel{0%{offset-distance:0%;opacity:0}12%,82%{opacity:1}100%{offset-distance:100%;opacity:0}}
@keyframes signalBlink{50%{opacity:.25}}

.healthy-stage>img{object-position:center;animation:slowPan 13s ease-in-out infinite alternate}
.habit-ring{position:absolute;inset:18px;z-index:4;display:grid;grid-template-columns:1fr 1fr;align-content:space-between;justify-content:space-between;pointer-events:none}
.habit-ring span{width:max-content;padding:8px 12px;border:1px solid rgba(255,255,255,.25);border-radius:999px;color:white;background:rgba(4,18,29,.73);backdrop-filter:blur(9px);font-size:10px;font-weight:800;animation:habitFocus 8s ease-in-out infinite}
.habit-ring span:nth-child(2),.habit-ring span:nth-child(4){justify-self:end}.habit-ring span:nth-child(2){animation-delay:2s}.habit-ring span:nth-child(3){animation-delay:4s}.habit-ring span:nth-child(4){animation-delay:6s}
@keyframes habitFocus{0%,16%{color:#071923;background:var(--accent);transform:translateY(-4px)}24%,100%{color:white;background:rgba(4,18,29,.73);transform:none}}
@keyframes slowPan{from{transform:scale(1)}to{transform:scale(1.025)}}

.nutrient-stage>img{height:70%;object-position:center top}
.nutrient-grid{position:absolute;left:12px;right:12px;bottom:12px;z-index:4;display:grid;grid-template-columns:repeat(5,1fr);gap:7px}
.nutrient-card{min-height:82px;padding:10px 7px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.14);border-radius:14px;color:white;background:rgba(4,18,29,.9);text-align:center;backdrop-filter:blur(12px)}
.nutrient-card i{width:9px;height:9px;margin-bottom:7px;border-radius:50%;background:var(--dot);box-shadow:0 0 10px var(--dot)}
.nutrient-card b{font-size:10px}.nutrient-card small{margin-top:4px;color:#91adbc;font-size:7px}.carb{--dot:#ffd36b}.fat{--dot:#e8ba57}.protein{--dot:#ff8c84}.water{--dot:#66d8ff}.micro{--dot:#73dfaa}

.fuel-stage{display:grid;grid-template-columns:1fr 150px 1fr;align-items:center;gap:24px;padding:38px}
.fuel-stage>svg{position:absolute;inset:0;width:100%;height:100%;fill:none;stroke:#9cb9c8;stroke-width:4;stroke-dasharray:13 11;animation:dashFlow 3s linear infinite}
.molecule,.enzyme{position:relative;z-index:2;min-height:190px;padding:25px 16px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.13);border-radius:28px;background:rgba(8,31,48,.9);text-align:center}
.molecule b,.enzyme b{font-size:16px}.molecule small,.enzyme small{margin-top:10px;color:#9cb5c3;font-size:10px}
.molecule>div{height:55px;margin-top:14px;display:flex;align-items:center}
.molecule i{width:27px;height:27px;margin-left:-3px;display:block;border:4px solid #ffd36b;border-radius:50%;background:#70582c}
.glucose i{width:24px;height:24px;margin:0 5px;border-color:#70dfae;background:#245e49;animation:buildingBlocks 3s ease-in-out infinite alternate}
.glucose i:nth-child(even){animation-delay:.3s}.enzyme span{color:var(--accent);font-size:50px;animation:enzymeCut 2.8s ease-in-out infinite}
.use-badges{position:absolute;left:50%;bottom:20px;z-index:3;transform:translateX(-50%);display:flex;gap:7px}
.use-badges span{padding:7px 10px;border-radius:999px;color:#cfe0e8;background:rgba(255,255,255,.07);font-size:8px;font-weight:750;white-space:nowrap}
@keyframes enzymeCut{0%,100%{transform:rotate(-7deg) scale(.94)}50%{transform:rotate(9deg) scale(1.08)}}
@keyframes buildingBlocks{to{transform:translateY(-10px)}}

.digestive-stage>img{object-position:center}
.digestive-route{position:absolute;left:14px;top:50%;z-index:5;width:156px;transform:translateY(-50%);display:grid;gap:7px}
.digestive-route::before{content:"";position:absolute;left:15px;top:16px;bottom:16px;width:2px;background:linear-gradient(#ffad72,#ff7b79);opacity:.7}
.digestive-route span{--delay:0s;position:relative;min-height:40px;padding:8px 8px 8px 41px;display:flex;align-items:center;border:1px solid rgba(255,255,255,.15);border-radius:11px;color:#dcebf2;background:rgba(4,18,29,.86);backdrop-filter:blur(10px);font-size:10px;font-weight:750;animation:routeFocus 6s ease-in-out var(--delay) infinite}
.digestive-route b{position:absolute;left:5px;z-index:2;width:22px;height:22px;display:grid;place-items:center;border-radius:50%;color:#14202a;background:#ffad72;font-size:9px}
.digestive-pins b{position:absolute;z-index:5;width:23px;height:23px;display:grid;place-items:center;border:2px solid white;border-radius:50%;color:#14202a;background:#ffad72;box-shadow:0 5px 16px rgba(0,0,0,.35);font-size:9px;animation:pinPulse 6s ease-in-out infinite}
.digestive-pins .pin-1{left:51%;top:5%}.digestive-pins .pin-2{left:51%;top:28%;animation-delay:.45s}.digestive-pins .pin-3{left:57%;top:47%;animation-delay:.9s}.digestive-pins .pin-4{left:51%;top:67%;animation-delay:1.35s}.digestive-pins .pin-5{left:63%;top:64%;animation-delay:1.8s}.digestive-pins .pin-6{left:51%;top:88%;animation-delay:2.25s}
.digestive-stage.focus-upper>img{transform:scale(1.35) translateY(11%);transform-origin:55% 20%}.digestive-stage.focus-colon>img{transform:scale(1.18) translateY(-5%);transform-origin:55% 65%}
.focus-caption{position:absolute;right:18px;top:18px;z-index:5;padding:12px 15px;border:1px solid rgba(255,255,255,.2);border-radius:14px;background:rgba(4,18,29,.82);backdrop-filter:blur(10px)}
.focus-caption b,.focus-caption span{display:block}.focus-caption b{color:var(--accent);font-size:13px}.focus-caption span{margin-top:4px;color:#b5c9d3;font-size:9px}
.focus-upper::before{content:"";position:absolute;left:51%;top:19%;z-index:5;width:9px;height:34%;border-radius:999px;background:linear-gradient(transparent,#ffe18a,transparent);filter:drop-shadow(0 0 8px #ffe18a);animation:peristalsis 3.2s ease-in-out infinite}
.colon-key{position:absolute;right:14px;bottom:14px;z-index:5;display:grid;gap:6px}
.colon-key span{padding:8px 10px;display:flex;align-items:center;gap:8px;border-radius:11px;color:#d9e9ef;background:rgba(4,18,29,.86);font-size:9px;font-weight:700}
.colon-key i{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 8px var(--accent)}
@keyframes routeFocus{0%,9%{border-color:#ffad72;color:white;transform:translateX(4px)}17%,100%{border-color:rgba(255,255,255,.15);color:#dcebf2;transform:none}}
@keyframes pinPulse{0%,9%{transform:scale(1.35);box-shadow:0 0 18px #ffad72}17%,100%{transform:scale(1);box-shadow:0 5px 16px rgba(0,0,0,.35)}}
@keyframes peristalsis{0%{transform:translateY(-12px);opacity:0}20%,75%{opacity:1}100%{transform:translateY(145px);opacity:0}}

.villi-stage>img{object-position:center}.villi-label{position:absolute;z-index:5;min-width:155px;padding:9px 10px 9px 40px;border:1px solid rgba(255,255,255,.2);border-radius:13px;color:white;background:rgba(4,18,29,.83);backdrop-filter:blur(10px);font-size:11px;font-weight:850}
.villi-label b{position:absolute;left:9px;top:50%;width:22px;height:22px;transform:translateY(-50%);display:grid;place-items:center;border-radius:50%;color:#10202a;background:var(--accent);font-size:9px}
.villi-label small{display:block;margin-top:3px;color:#a4bdca;font-size:8px;font-weight:650}.v-wall{left:2%;bottom:6%}.v-villi{left:39%;top:5%}.v-vessel{right:2%;bottom:5%}
.absorb-particle{--n:0;position:absolute;z-index:4;right:15%;top:calc(58% + var(--n) * 2%);width:8px;height:8px;border-radius:50%;background:#ffd45c;box-shadow:0 0 9px #ffd45c;animation:absorb 3.5s ease-in calc(var(--n) * .28s) infinite}
@keyframes absorb{0%{transform:translate(80px,-15px);opacity:0}20%{opacity:1}80%{opacity:1}100%{transform:translate(-5px,58px);opacity:0}}

.balance-stage{padding:24px 34px;display:grid;grid-template-columns:1.25fr .75fr;align-items:center;gap:28px}
.pyramid{height:100%;display:flex;flex-direction:column-reverse;justify-content:center;align-items:center;gap:7px}
.pyramid>div{height:62px;padding:8px 18px;display:flex;flex-direction:column;align-items:center;justify-content:center;border:1px solid rgba(255,255,255,.15);border-radius:14px;color:#11202a;background:var(--c);box-shadow:0 12px 24px rgba(0,0,0,.15);animation:pyramidFocus 8s ease-in-out infinite}
.pyramid>div span{font-size:11px;font-weight:900}.pyramid>div small{margin-top:3px;font-size:8px;font-weight:700;opacity:.72}
.pyramid .drink{--c:#72d7ee;width:94%}.pyramid .plants{--c:#75d59a;width:80%;animation-delay:1.4s}.pyramid .grain{--c:#e2cc71;width:67%;animation-delay:2.8s}.pyramid .middle{--c:#efaa70;width:54%;animation-delay:4.2s}.pyramid .top{--c:#ee7c83;width:40%;animation-delay:5.6s}
.balance-note{padding:28px 22px;border-left:3px solid var(--accent);border-radius:0 18px 18px 0;background:linear-gradient(90deg,rgba(var(--accent-rgb),.11),transparent)}
.balance-note b,.balance-note span{display:block}.balance-note b{font-size:22px;line-height:1.1}.balance-note span{margin-top:13px;color:#adc3ce;font-size:11px;line-height:1.6}
@keyframes pyramidFocus{0%,12%{filter:brightness(1.2);transform:scale(1.035)}20%,100%{filter:none;transform:none}}

.skeleton-stage>img{object-position:center}.bone-label{padding-left:12px}.skull{left:4%;top:9%}.ribs{left:4%;top:34%}.pelvis{left:4%;top:60%}.limbs{left:4%;bottom:8%}
.bone-label::after{left:100%}.spine-focus>img{transform:scale(1.2) translateX(-10%);transform-origin:80% center}
.spine-label{padding-left:12px}.curve{right:3%;top:9%}.vertebra{right:3%;top:42%}.disc{right:3%;top:57%}
.spine-label::after{content:"";position:absolute;right:100%;top:50%;width:58px;height:1px;background:linear-gradient(90deg,transparent,white)}
.compression{position:absolute;left:13%;top:19%;z-index:5;width:140px;height:265px;display:flex;flex-direction:column;align-items:center;color:#dcebf1}
.compression span,.compression small{padding:7px 10px;border-radius:999px;background:rgba(4,18,29,.84);font-size:9px;font-weight:800}.compression i{width:76px;height:26px;margin:6px 0;border:7px solid #e5d8bd;border-radius:9px;background:#75bcd4;box-shadow:inset 0 0 0 3px #27556b;animation:discCompress 3.6s ease-in-out infinite}.compression i:nth-of-type(2){animation-delay:.18s}.compression i:nth-of-type(3){animation-delay:.36s}
@keyframes discCompress{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.72)}}

.joints-stage>img{object-position:center}.joint-label{position:absolute;z-index:5;bottom:14px;width:29%;padding:10px 8px;border:1px solid rgba(255,255,255,.2);border-radius:14px;background:rgba(4,18,29,.87);backdrop-filter:blur(10px);text-align:center}
.saddle-precise{position:absolute;right:0;top:0;z-index:3;width:33.5%;height:79%;display:grid;place-items:center;background:radial-gradient(circle at 50% 44%,#173e5d,#071725 72%)}
.saddle-precise svg{width:72%;height:78%;overflow:visible;filter:drop-shadow(0 16px 24px rgba(0,0,0,.35))}
.saddle-precise>span{position:absolute;bottom:3%;color:#94bdce;font-size:8px;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.saddle-axis{fill:none;stroke:#9ae2f8;stroke-width:3;stroke-linecap:round;stroke-dasharray:8 8;animation:dashFlow 2.4s linear infinite}
.axis-two{animation-direction:reverse}
.joint-label b,.joint-label span,.joint-label small{display:block}.joint-label b{color:white;font-size:12px}.joint-label span{margin-top:4px;color:var(--accent);font-size:9px;font-weight:750}.joint-label small{margin-top:3px;color:#9db6c3;font-size:8px}
.joint-label.ball{left:2%}.joint-label.hinge{left:35.5%}.joint-label.saddle{right:2%}
.joints-stage::before{content:"";position:absolute;inset:0;z-index:4;background:linear-gradient(90deg,transparent 32%,rgba(255,255,255,.15) 32.1%,transparent 32.4%,transparent 66%,rgba(255,255,255,.15) 66.1%,transparent 66.4%);pointer-events:none}
.joint-label{animation:jointFocus 7.5s ease-in-out infinite}.joint-label.hinge{animation-delay:2.5s}.joint-label.saddle{animation-delay:5s}
@keyframes jointFocus{0%,22%{transform:translateY(-8px);border-color:var(--accent);box-shadow:0 0 24px rgba(var(--accent-rgb),.18)}30%,100%{transform:none;border-color:rgba(255,255,255,.2);box-shadow:none}}

.muscle-stage>img{object-position:center}.muscle-label.biceps{right:3%;top:18%}.muscle-label.triceps{left:3%;top:39%}.muscle-label.tendon{right:3%;bottom:16%}
.muscle-label.triceps::after{left:100%;width:210px}.muscle-label.biceps::after,.muscle-label.tendon::after{right:100%;width:150px;transform:rotate(180deg)}
.biceps i{background:#ff745f}.triceps i{background:#76c7e7}.tendon i{background:#efe6cd}
.muscle-label.biceps{animation:bicepsFocus 6s ease-in-out infinite}.muscle-label.triceps{animation:tricepsFocus 6s ease-in-out infinite}
.movement-arrow{position:absolute;right:4%;bottom:8%;z-index:5;width:150px;display:flex;flex-direction:column;align-items:center;color:var(--accent);font-size:52px;line-height:.7;animation:armMove 3s ease-in-out infinite alternate}
.movement-arrow span{margin-top:14px;color:#d9e8ee;font-size:9px;font-weight:800;letter-spacing:.08em}
@keyframes bicepsFocus{0%,42%{border-color:#ff745f;box-shadow:0 0 25px rgba(255,116,95,.22)}55%,100%{border-color:rgba(255,255,255,.2);box-shadow:none}}
@keyframes tricepsFocus{0%,42%{border-color:rgba(255,255,255,.2)}55%,92%{border-color:#76c7e7;box-shadow:0 0 25px rgba(118,199,231,.22)}}
@keyframes armMove{to{transform:scaleX(.82)}}

.start-screen::before{background:linear-gradient(90deg,rgba(4,15,24,.86),rgba(4,15,24,.36)),url('./organs-hero.png') center/cover no-repeat;filter:saturate(.88)}
.start-screen::after{background:radial-gradient(circle at 50% 35%,rgba(112,223,174,.13),transparent 38%)}
.start-symbol{width:106px;height:106px;display:grid;place-items:center;border-radius:34px;color:#0e2225;background:#70dfae;box-shadow:0 0 0 12px rgba(112,223,174,.06),0 22px 55px rgba(112,223,174,.17)}
.start-card>p{color:#70dfae}.start-card>button{background:#70dfae;box-shadow:0 16px 35px rgba(112,223,174,.16)}

@media(max-width:980px){
  .photo-stage,.teamwork,.fuel-stage,.balance-stage,.nutrient-stage{max-width:760px}
  .visual-column{min-height:0}
  .system-label{min-width:132px;font-size:10px}.system-label small{font-size:8px}
  .nutrient-card{min-height:68px}.digestive-route{width:140px}
}
@media(max-width:680px){
  .photo-stage,.teamwork,.fuel-stage,.balance-stage,.nutrient-stage{aspect-ratio:1.38;border-radius:22px}
  .system-label{min-width:0;max-width:118px;padding:6px 7px 6px 20px;font-size:8px}.system-label small{display:none}.system-label i{left:7px;top:9px;width:6px;height:6px}.system-label::after{width:24px}
  .label-nerves,.label-blood{left:2%}.label-breath,.label-digest{right:2%}
  .organ-node{width:88px;min-height:77px;padding:8px 4px;border-radius:15px}.organ-node span{width:28px;height:28px;font-size:11px}.organ-node b{margin-top:5px;font-size:10px}.organ-node small{display:none}
  .teamwork .flow{stroke-width:5}.signal-line{font-size:7px}.flow-dot{width:9px;height:9px}
  .nutrient-stage>img{height:66%}.nutrient-grid{left:5px;right:5px;bottom:5px;gap:3px}.nutrient-card{min-height:60px;padding:5px 2px;border-radius:8px}.nutrient-card b{font-size:7px}.nutrient-card small{display:none}
  .fuel-stage{grid-template-columns:1fr 72px 1fr;gap:8px;padding:16px}.molecule,.enzyme{min-height:130px;padding:12px 4px;border-radius:16px}.molecule b,.enzyme b{font-size:10px}.molecule small,.enzyme small{font-size:7px}.molecule i{width:16px;height:16px;border-width:2px}.glucose i{width:14px;height:14px;margin:0 2px}.enzyme span{font-size:30px}.use-badges{bottom:9px}.use-badges span{padding:4px 5px;font-size:6px}
  .digestive-route{left:6px;width:96px;gap:3px}.digestive-route span{min-height:28px;padding:4px 3px 4px 29px;border-radius:7px;font-size:7px}.digestive-route b{width:17px;height:17px;font-size:7px}.focus-caption{top:7px;right:7px;padding:7px 8px}.focus-caption span{display:none}.colon-key{right:6px;bottom:6px}.colon-key span{padding:5px 6px;font-size:6px}
  .villi-label{min-width:0;max-width:125px;padding:6px 6px 6px 28px;border-radius:8px;font-size:8px}.villi-label b{left:6px;width:17px;height:17px}.villi-label small{display:none}.v-villi{left:34%}
  .balance-stage{padding:12px;grid-template-columns:1.3fr .7fr;gap:10px}.pyramid{gap:3px}.pyramid>div{height:41px;padding:4px 8px;border-radius:8px}.pyramid>div span{font-size:7px}.pyramid>div small{font-size:6px}.balance-note{padding:12px 9px}.balance-note b{font-size:13px}.balance-note span{font-size:7px}
  .bone-label,.spine-label,.muscle-label{min-width:0;max-width:118px;padding:6px 7px;font-size:8px}.bone-label small,.muscle-label small{display:none}.bone-label::after,.spine-label::after,.muscle-label::after{width:25px}.spine-focus>img{transform:scale(1.15) translateX(-8%)}.compression{left:6%;top:13%;width:78px;height:190px}.compression i{width:45px;height:18px;border-width:4px}.compression span,.compression small{font-size:6px}
  .joint-label{bottom:5px;padding:6px 3px;border-radius:8px}.joint-label b{font-size:8px}.joint-label span{font-size:6px}.joint-label small{display:none}
  .saddle-precise>span{display:none}
  .movement-arrow{right:2%;bottom:4%;width:95px;font-size:34px}.movement-arrow span{font-size:6px}
  .start-symbol{width:84px;height:84px;border-radius:27px}
}