:root {
  --ink: #f4f8ff;
  --muted: #9bb0c9;
  --dim: #6f86a5;
  --bg: #050b24;
  --bg-2: #081433;
  --panel: rgba(14, 30, 59, .62);
  --line: rgba(73, 120, 180, .28);
  --line-strong: rgba(103, 180, 248, .45);
  --cyan: #38bdf8;
  --cyan-2: #67e8f9;
  --pink: #ef4b98;
  --gold: #fbbf24;
  --violet: #8b5cf6;
  --good: #34d399;
  --bad: #f87171;
  --radius: 22px;
  --max: 1180px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box }
html { scroll-behavior: smooth; scroll-padding-top: 84px }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100% }
a { color: inherit }
::selection { background: var(--pink); color: #fff }
:focus-visible { outline: 2px solid var(--cyan-2); outline-offset: 3px; border-radius: 8px }
[hidden] { display: none !important }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap }

/* ---------- Navigation ---------- */
.nav {
  position: fixed; inset: 0 0 auto; z-index: 50;
  transition: background .3s, border-color .3s, backdrop-filter .3s;
  border-bottom: 1px solid transparent;
}
.nav.scrolled {
  background: rgba(5, 11, 36, .72);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-color: var(--line);
}
.nav-inner {
  max-width: var(--max); margin: auto; height: 72px; padding: 0 28px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 19px; letter-spacing: .01em; text-decoration: none; color: var(--ink) }
.brand-mark { width: 30px; height: 30px; filter: drop-shadow(0 0 10px rgba(56, 189, 248, .45)) }
nav { display: flex; gap: 6px }
nav a {
  color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 600;
  padding: 8px 14px; border-radius: 999px; transition: color .2s, background .2s;
}
nav a:hover { color: var(--ink); background: rgba(56, 189, 248, .1) }
nav a.active { color: var(--ink); background: rgba(56, 189, 248, .14) }
.nav-end { display: flex; align-items: center; gap: 14px }
.lang-switch { display: inline-flex; padding: 3px; border-radius: 999px; border: 1px solid var(--line-strong); background: rgba(5, 11, 36, .4) }
.lang-switch a { color: var(--muted); text-decoration: none; font-size: 13px; font-weight: 800; letter-spacing: .04em; padding: 5px 11px; border-radius: 999px; transition: color .2s, background .2s }
.lang-switch a:hover { color: var(--ink) }
.lang-switch a[aria-current="true"] { color: var(--bg); background: var(--cyan) }

/* The demo's randomly oriented 3D axis can reach past the screen edge; clip it
   so mobile browsers never widen the whole page (which hid the language switch). */
.section.demo { overflow-x: clip }

/* ---------- Sprachen ---------- */
.languages-layout { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 6fr); gap: 36px; align-items: center; margin-top: 44px }
.language-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 0; padding: 0; list-style: none }
.language-list li { display: flex; align-items: center; gap: 12px; padding: 12px 16px; border-radius: 14px; border: 1px solid var(--line); background: rgba(15, 30, 61, .55); font-weight: 650 }
.language-list img { width: 28px; height: 18px; border-radius: 3px; box-shadow: 0 0 0 1px rgba(255, 255, 255, .08) }
.languages-layout .shot button { width: 100% }

/* ---------- Buttons ---------- */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 24px; border-radius: 16px;
  font: inherit; font-weight: 750; font-size: 16px; text-decoration: none; cursor: pointer;
  border: 1px solid var(--line-strong);
  transition: transform .2s var(--ease), box-shadow .2s, background .2s;
}
.button:hover { transform: translateY(-2px) }
.button:active { transform: translateY(0) scale(.98) }
.button svg { width: 18px; height: 18px; fill: currentColor }
.primary {
  color: #031126; border-color: transparent;
  background: linear-gradient(135deg, var(--cyan-2), var(--cyan) 55%, #3b82f6);
  box-shadow: 0 10px 30px -8px rgba(56, 189, 248, .7), inset 0 1px 0 rgba(255, 255, 255, .5);
}
.primary:hover { box-shadow: 0 16px 40px -8px rgba(56, 189, 248, .85), inset 0 1px 0 rgba(255, 255, 255, .5) }
.ghost { color: var(--ink); background: rgba(16, 39, 70, .6); backdrop-filter: blur(6px) }
.ghost:hover { background: rgba(22, 52, 92, .8) }

/* ---------- Hero ---------- */
.hero { position: relative; min-height: 100vh; min-height: 100svh; display: grid; align-items: center; isolation: isolate; overflow: hidden }
.hero-bg {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(180deg, rgba(5, 11, 36, .55) 0%, rgba(5, 11, 36, .1) 40%, rgba(5, 11, 36, .35) 75%, var(--bg) 100%),
    linear-gradient(90deg, rgba(5, 11, 36, .85) 0%, rgba(5, 11, 36, .2) 60%),
    url("assets/menu-background.jpg") center bottom / cover no-repeat;
}
.hero-inner {
  width: 100%; max-width: var(--max); margin: auto; padding: 120px 28px 110px;
  display: grid; grid-template-columns: 1.05fr .95fr; gap: 40px; align-items: center;
}
@font-face { font-family: "Titan One"; src: url("assets/fonts/TitanOne-Regular.ttf") format("truetype"); font-display: swap }
.logo {
  font-family: "Titan One", "Arial Rounded MT Bold", system-ui, sans-serif; font-weight: 400;
  font-size: clamp(50px, 6.2vw, 84px); line-height: 1.1; letter-spacing: .01em;
  margin: 0 0 30px; display: flex; gap: .22em; flex-wrap: wrap;
  animation: float 6s ease-in-out infinite;
}
.w { position: relative; display: inline-block; isolation: isolate }
.w-cube { color: #1d4ed8; transform: rotate(-3deg) }
.w-shift { color: #be185d; transform: rotate(2deg) translateY(.04em) }
/* Ebenen: Kontur/Schatten (hinten) · Element-Text = Tiefe · Verlaufsfläche (vorne) */
.w::before, .w::after { content: attr(data-text); position: absolute; inset: 0; pointer-events: none }
.w::before {
  z-index: -1; color: #0a1033; -webkit-text-stroke: .17em #0a1033;
  text-shadow: 0 .08em 0 #0a1033, 0 .2em .35em rgba(0, 0, 0, .55), 0 0 .6em rgba(56, 189, 248, .35);
}
.w-shift::before { text-shadow: 0 .08em 0 #0a1033, 0 .2em .35em rgba(0, 0, 0, .55), 0 0 .6em rgba(239, 75, 152, .35) }
.w::after { z-index: 1; transform: translateY(-.07em); color: transparent; -webkit-background-clip: text; background-clip: text }
.w-cube::after { background-image: linear-gradient(180deg, #e0faff 0%, #67e8f9 30%, #38bdf8 62%, #2563eb 100%) }
.w-shift::after { background-image: linear-gradient(180deg, #fff3c4 0%, #fbbf24 32%, #fb7a3c 64%, #ec4899 100%) }
@keyframes float { 50% { transform: translateY(-8px) } }
.tagline { font-size: clamp(30px, 4.2vw, 50px); font-weight: 800; line-height: 1.08; letter-spacing: -.035em; margin: 0 0 20px }
.tagline span { white-space: nowrap; background: linear-gradient(90deg, var(--cyan-2), var(--cyan), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent }
.lead { font-size: 19px; color: #b9c9de; max-width: 560px; margin: 0 }

.hero-art { position: relative; aspect-ratio: 1; max-width: 500px; width: 100%; justify-self: center; display: grid; place-items: center }
.glow { position: absolute; inset: 15%; border-radius: 50%; background: radial-gradient(circle, rgba(56, 189, 248, .45), rgba(139, 92, 246, .2) 45%, transparent 70%); filter: blur(30px) }
.hero-ring { position: absolute; left: 6%; right: 6%; bottom: 4%; height: 24%; border-radius: 50%; border: 1px solid rgba(103, 232, 249, .3); box-shadow: 0 0 40px rgba(56, 189, 248, .25), inset 0 0 40px rgba(56, 189, 248, .15); pointer-events: none }

.scroll-hint { position: absolute; left: 50%; bottom: 76px; width: 26px; height: 42px; margin-left: -13px; border: 2px solid rgba(155, 176, 201, .5); border-radius: 14px }
.scroll-hint span { position: absolute; left: 50%; top: 8px; width: 4px; height: 8px; margin-left: -2px; border-radius: 2px; background: var(--cyan-2); animation: wheel 1.8s infinite }
@keyframes wheel { 0% { opacity: 0; transform: translateY(0) } 30% { opacity: 1 } 100% { opacity: 0; transform: translateY(14px) } }

/* ---------- 3D-Figuren ---------- */
.stage { perspective: 1100px; display: grid; place-items: center; width: 100%; height: 100%; position: relative }
.stage-hero { --s: 64px }
.stage-demo { --s: 52px; height: 360px; cursor: pointer }
.scene { position: relative; width: 0; height: 0; transform-style: preserve-3d }
.scene.spin { animation: spin 22s linear infinite }
@keyframes spin { from { transform: rotateX(-26deg) rotateY(0) } to { transform: rotateX(-26deg) rotateY(360deg) } }
/* Szene mit Kamera (--ra, --rb) und Drehung der Figur (--ax/--ay/--az, --ang) */
.scene.cam { transform: rotateX(var(--ra)) rotateY(var(--rb)) rotate3d(var(--ax), var(--ay), var(--az), var(--ang)) }
.el, .axis, .ring { position: absolute; left: 0; top: 0; transform-style: preserve-3d }
.cube { --k: calc(var(--s) * .86); width: var(--k); height: var(--k); margin: calc(var(--k) / -2) 0 0 calc(var(--k) / -2) }
.f {
  position: absolute; inset: 0; backface-visibility: hidden;
  background: linear-gradient(var(--shade), var(--shade)), var(--c);
  border: 1px solid rgba(255, 255, 255, .3);
  box-shadow: inset 0 0 calc(var(--s) * .22) rgba(255, 255, 255, .22);
  border-radius: 4px;
}
.f-fr { --shade: rgba(0, 0, 0, 0); transform: translateZ(calc(var(--k) / 2)) }
.f-bk { --shade: rgba(0, 0, 0, .3); transform: rotateY(180deg) translateZ(calc(var(--k) / 2)) }
.f-rt { --shade: rgba(0, 0, 0, .22); transform: rotateY(90deg) translateZ(calc(var(--k) / 2)) }
.f-lt { --shade: rgba(0, 0, 0, .3); transform: rotateY(-90deg) translateZ(calc(var(--k) / 2)) }
.f-tp { --shade: rgba(255, 255, 255, .22); transform: rotateX(90deg) translateZ(calc(var(--k) / 2)) }
.f-bt { --shade: rgba(0, 0, 0, .45); transform: rotateX(-90deg) translateZ(calc(var(--k) / 2)) }
.sphere {
  --k: calc(var(--s) * .9); width: var(--k); height: var(--k); margin: calc(var(--k) / -2) 0 0 calc(var(--k) / -2);
  border-radius: 50%;
  background: radial-gradient(circle at 34% 30%, rgba(255, 255, 255, .85), transparent 22%),
    radial-gradient(circle at 40% 38%, var(--c) 30%, color-mix(in srgb, var(--c) 45%, #050b24) 100%);
}
/* Spiel-Look für alle Figuren: matt, deckend, dunkle Kontur wie im Spiel. */
.f { border: 1px solid #18263a; border-radius: 0; box-shadow: none }
.f-tp { --shade: rgba(255, 255, 255, .14) }
.sphere {
  --k: calc(var(--s) * .86);
  border: 1px solid #18263a; box-sizing: border-box;
  background: radial-gradient(circle at 36% 30%, color-mix(in srgb, var(--c) 72%, #fff) 0%, var(--c) 42%, color-mix(in srgb, var(--c) 62%, #0b1626) 100%);
}
.demo-box .axis i { filter: none; opacity: .95 }
.demo-box .ring { width: calc(var(--s) * 1.6); height: calc(var(--s) * 1.6); margin: calc(var(--s) * -.8) 0 0 calc(var(--s) * -.8) }
.demo-box .ring svg { filter: drop-shadow(0 0 1.5px #071426) drop-shadow(0 0 1.5px #071426) }
.el.pop { animation: pop .45s var(--ease) both; animation-delay: var(--d, 0s) }
/* Kugeln der Hero-Figur drehen sich gegen die Szene, damit sie zur Kamera zeigen. */
.hero-bb { transform: var(--tr) rotateY(35deg) rotateX(26deg) translateZ(calc(var(--s) * .26)); animation: counter 22s linear infinite }
@keyframes counter {
  from { transform: var(--tr) rotateY(0deg) rotateX(26deg) translateZ(calc(var(--s) * .26)) }
  to { transform: var(--tr) rotateY(-360deg) rotateX(26deg) translateZ(calc(var(--s) * .26)) }
}
.cube.pop { animation: none } .cube.pop .f { animation: pop .45s var(--ease) both; animation-delay: var(--d, 0s) }
@keyframes pop { from { opacity: 0 } }
.axis { width: var(--len); height: 3px; margin: -1.5px 0 0 calc(var(--len) / -2); pointer-events: none }
.axis i { position: absolute; inset: 0; background: repeating-linear-gradient(90deg, #fff 0 9px, transparent 9px 15px); opacity: .9; filter: drop-shadow(0 0 4px rgba(255, 255, 255, .8)) }
.axis i + i { transform: rotateX(90deg) }
.ring { width: calc(var(--s) * 1.3); height: calc(var(--s) * 1.3); margin: calc(var(--s) * -.65) 0 0 calc(var(--s) * -.65); pointer-events: none }
.ring svg { width: 100%; height: 100%; overflow: visible; filter: drop-shadow(0 0 6px rgba(251, 191, 36, .7)) }

/* ---------- Abschnitte ---------- */
.section { max-width: var(--max); margin: auto; padding: 110px 28px }
.section-intro { max-width: 760px }
.section-intro > p:not(.eyebrow) { font-size: 18px; color: var(--muted) }
.eyebrow { font-size: 12px; letter-spacing: .2em; text-transform: uppercase; color: var(--cyan); font-weight: 800; margin: 0 0 14px }
h2, h3 { line-height: 1.1; margin: 0 0 20px }
h2 { font-size: clamp(32px, 4.4vw, 54px); letter-spacing: -.04em }
h3 { font-size: 22px; letter-spacing: -.01em; margin-bottom: 10px }
.grad { background: linear-gradient(90deg, var(--cyan-2), var(--pink)); -webkit-background-clip: text; background-clip: text; color: transparent }

.facts { max-width: var(--max); margin: -48px auto 0; padding: 0 28px; position: relative; z-index: 2 }
.facts-inner {
  position: relative; display: grid; grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, rgba(20, 42, 82, .72), rgba(8, 20, 51, .78));
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  box-shadow: 0 30px 60px -30px rgba(0, 0, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .06);
}
.facts-inner::before {
  content: ""; position: absolute; inset: 0 0 auto; height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan-2) 25%, var(--pink) 50%, var(--gold) 75%, transparent); opacity: .7;
}
.fact {
  --a: var(--cyan-2);
  position: relative; display: flex; align-items: center; justify-content: center; gap: 16px; padding: 26px 20px;
  transition: background .3s var(--ease);
}
.fact:nth-child(2) { --a: var(--pink) }
.fact:nth-child(3) { --a: var(--gold) }
.fact:nth-child(4) { --a: #a78bfa }
.fact + .fact::before {
  content: ""; position: absolute; left: 0; top: 22%; bottom: 22%; width: 1px;
  background: linear-gradient(180deg, transparent, var(--line-strong), transparent);
}
.fact:hover { background: radial-gradient(120% 90% at 50% 100%, color-mix(in srgb, var(--a) 14%, transparent), transparent 70%) }
.fact-icon {
  flex: none; width: 48px; height: 48px; padding: 11px; border-radius: 14px;
  fill: none; stroke: var(--a); stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
  background: color-mix(in srgb, var(--a) 12%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--a) 35%, transparent), 0 0 24px -6px color-mix(in srgb, var(--a) 60%, transparent);
  transition: transform .3s var(--ease);
}
.fact:hover .fact-icon { transform: translateY(-2px) rotate(-4deg) }
.fact p { margin: 0; display: flex; flex-direction: column; text-align: left }
.fact strong {
  font-size: 32px; line-height: 1; letter-spacing: -.03em; font-variant-numeric: tabular-nums;
  background: linear-gradient(180deg, #fff 30%, color-mix(in srgb, var(--a) 70%, #fff)); -webkit-background-clip: text; background-clip: text; color: transparent;
}
.fact span { margin-top: 6px; font-size: 13px; line-height: 1.3; color: var(--muted) }
.steps { list-style: none; padding: 0; margin: 50px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; counter-reset: s }
.steps li { display: flex; gap: 18px; align-items: flex-start; position: relative }
.steps li > span {
  flex: none; width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center;
  font-weight: 800; color: var(--bg); background: linear-gradient(135deg, var(--cyan-2), var(--cyan));
  box-shadow: 0 0 0 6px rgba(56, 189, 248, .12);
}
.steps p { color: var(--muted); margin: 0 }

/* ---------- Screenshots ---------- */
.shots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; margin-top: 44px }
.shot { margin: 0 }
.shot-main { grid-column: 1 / -1 }
.shot button {
  display: block; width: 100%; padding: 0; border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
  background: #08111f; cursor: zoom-in; transition: transform .35s var(--ease), border-color .35s, box-shadow .35s;
}
.shot-main button { border-radius: 22px; border-color: var(--line-strong); box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .9), 0 0 60px -20px rgba(56, 189, 248, .35) }
.shot button:hover { transform: translateY(-4px); border-color: var(--cyan) }
.shot img { display: block; width: 100%; height: auto }
.shot figcaption { margin-top: 10px; font-size: 14px; color: var(--muted) }
.shot-main figcaption { text-align: center; font-size: 15px }
.lightbox { width: min(96vw, 1600px); max-width: none; max-height: 96vh; padding: 0; border: 0; background: transparent; color: var(--ink); overflow: visible }
.lightbox::backdrop { background: rgba(3, 7, 24, .88); backdrop-filter: blur(6px) }
.lightbox img { display: block; width: 100%; max-height: 84vh; object-fit: contain; border-radius: 14px }
.lightbox p { text-align: center; color: var(--muted); margin: 12px 0 0 }
.lightbox button {
  position: absolute; width: 44px; height: 44px; border-radius: 50%; border: 1px solid var(--line-strong);
  background: rgba(8, 20, 48, .85); color: var(--ink); font-size: 26px; line-height: 1; cursor: pointer;
}
.lb-close { top: -14px; right: -14px }
.lb-prev, .lb-next { top: 50%; transform: translateY(-50%) }
.lb-prev { left: 10px } .lb-next { right: 10px }

/* ---------- Spielelemente ---------- */
.pieces { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 44px }
.piece {
  text-align: center; padding: 28px 22px; border-radius: var(--radius); border: 1px solid var(--line);
  background: radial-gradient(circle at 50% 30%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 65%), rgba(8, 20, 48, .55);
  transition: transform .35s var(--ease), border-color .35s;
}
.piece:hover { transform: translateY(-6px); border-color: color-mix(in srgb, var(--accent) 60%, transparent) }
.piece svg { width: 108px; height: 108px; margin-bottom: 12px; filter: drop-shadow(0 12px 18px color-mix(in srgb, var(--accent) 40%, transparent)); transition: transform .5s var(--ease) }
.piece:hover svg { transform: rotate(-8deg) scale(1.06) }
.piece p { color: var(--muted); margin: 0; font-size: 15px }

/* ---------- Demo ---------- */
.demo { position: relative }
.demo::before {
  content: ""; position: absolute; inset: 0 -50vw; z-index: -1;
  background: radial-gradient(ellipse 60% 50% at 50% 55%, rgba(139, 92, 246, .16), transparent 70%);
}
.demo-box {
  margin-top: 44px; border-radius: 24px; padding: 20px;
  background: #0b1324;
  border: 1px solid var(--line-strong);
  box-shadow: 0 40px 80px -40px rgba(0, 0, 0, .8), inset 0 1px 0 rgba(255, 255, 255, .06);
}
.demo-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap }
.levels { display: inline-flex; padding: 4px; border-radius: 12px; background: #1c2536; border: 1px solid #2a3a50 }
.levels button {
  font: inherit; font-size: 14px; font-weight: 700; color: var(--muted); background: none; border: 0;
  padding: 8px 16px; border-radius: 10px; cursor: pointer; transition: color .2s, background .2s;
}
.levels button[aria-checked="true"] { color: #fff; background: #075985 }
.timer {
  font-family: "Titan One", system-ui, sans-serif; font-size: 22px; letter-spacing: .12em; line-height: 1;
  color: #fff; padding: 7px 26px; border-radius: 10px; background: #071226; border: 2px solid #2a8fc4;
  font-variant-numeric: tabular-nums;
}
.timer.done { opacity: .55 }
.hud { display: flex; flex-direction: column; align-items: flex-end; gap: 4px }
.hud-level { font-size: 13px; color: #8b9bb0 }
.hud-pill {
  display: flex; gap: 10px; align-items: center; padding: 5px 12px; border-radius: 10px;
  border: 1px solid #2a3a50; background: #0d1729; font-size: 14px; color: #cbd5e1; font-variant-numeric: tabular-nums;
}
.hud-pill b { color: var(--good); font-weight: 600 }
.streak { color: var(--gold); padding: 0 8px; border-radius: 999px; background: rgba(251, 191, 36, .12) }
.demo-body { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 18px; align-items: stretch }
/* Referenzfeld und Antwortkarten wie im Spiel: dunkle, gerahmte Flächen. */
/* Oben bündig mit den Antwortkarten (unter der Frage), wie im Spiel. */
.demo-figure { border-radius: 14px; background: #111a2b; border: 2px solid #26344a; text-align: center; overflow: hidden; margin-top: 34px; display: flex; flex-direction: column }
.demo-figure .stage-demo { flex: 1; height: auto; min-height: 340px }
.hint { margin: 0; padding-bottom: 8px; font-size: 12px; color: var(--dim) }
.question { font-size: 17px; line-height: 24px; font-weight: 500; margin: 0 0 10px; color: var(--ink) }
.options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px }
.opt {
  position: relative; aspect-ratio: 1.6; display: grid; place-items: center; cursor: pointer;
  border-radius: 14px; border: 2px solid #26344a; background: #111a2b;
  transition: transform .2s var(--ease), border-color .2s, background .2s, opacity .3s;
}
.opt:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--cyan) }
.opt:disabled { cursor: default }
.opt .key {
  position: absolute; top: 10px; left: 10px; z-index: 2; width: 34px; height: 34px; border-radius: 50%;
  display: grid; place-items: center; font-size: 17px; font-weight: 500; line-height: 1;
  color: var(--ink); border: 1.5px solid #3b4b62; background: #1a2436;
}
.opt.correct .key { border-color: var(--good); color: var(--good) }
.opt.wrong .key { border-color: var(--bad); color: var(--bad) }
.opt { overflow: hidden }
.opt .stage { --s: 30px; position: absolute; inset: 0; pointer-events: none }
.demo-figure { position: relative }
.angle-label {
  position: absolute; z-index: 3; transform: translate(-50%, -50%); pointer-events: none; white-space: nowrap;
  font-family: "Titan One", system-ui, sans-serif; font-size: calc(var(--s) * .62); line-height: 1; color: var(--gold);
  -webkit-text-stroke: calc(var(--s) * .1) #071426; paint-order: stroke fill;
}
/* Rasterflächen hinter der Referenzfigur (wie ReferenceGrid im Spiel). */
.gp {
  position: absolute; left: 0; top: 0; transform-origin: 0 0; pointer-events: none;
  --g: rgba(102, 133, 173, .4);
  background-image: linear-gradient(to right, var(--g) 1px, transparent 1px), linear-gradient(to bottom, var(--g) 1px, transparent 1px);
  background-size: var(--s) var(--s); border-right: 1px solid var(--g); border-bottom: 1px solid var(--g);
}
.stage-demo > .scene { grid-area: 1 / 1 }
.opt.correct { border-color: var(--good); background: rgba(52, 211, 153, .12); box-shadow: 0 0 0 4px rgba(52, 211, 153, .15) }
.opt.wrong { border-color: var(--bad); background: rgba(248, 113, 113, .1); animation: shake .4s }
.opt.faded { opacity: .35 }
@keyframes shake { 25% { transform: translateX(-5px) } 75% { transform: translateX(5px) } }
.feedback { min-height: 28px; margin-top: 16px; font-weight: 700 }
.demo-note { margin: 16px auto 0; max-width: 680px; text-align: center; font-size: 14px; color: var(--dim) }
.feedback.good { color: var(--good) }
.feedback.bad { color: var(--bad) }
.next { margin-top: 6px }
/* Platz für Rückmeldung und Weiter-Knopf ist immer reserviert, damit nach
   einer Antwort nichts verrutscht. */
.next.pending { visibility: hidden }
.noscript { color: var(--muted); text-align: center }

/* ---------- Modi ---------- */
.modes { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px }
.mode {
  padding: 30px; border-radius: var(--radius); border: 1px solid var(--line);
  background: linear-gradient(180deg, color-mix(in srgb, var(--accent) 10%, transparent), rgba(8, 20, 48, .5));
  border-top: 3px solid var(--accent);
}
.mode p { color: var(--muted); margin: 0 }
.bars { display: flex; gap: 5px; align-items: flex-end; height: 22px; margin-bottom: 20px }
.bars i { width: 8px; border-radius: 3px; background: rgba(155, 176, 201, .25) }
.bars i:nth-child(1) { height: 40% } .bars i:nth-child(2) { height: 70% } .bars i:nth-child(3) { height: 100% }
.mode:nth-child(1) .bars i:nth-child(1),
.mode:nth-child(2) .bars i:nth-child(-n+2),
.mode:nth-child(3) .bars i { background: var(--accent) }

/* ---------- Rechtliches ---------- */
.legal { padding-top: 40px }
.legal p { max-width: 820px }
.legal h2 { font-size: 34px }
.legal p { color: var(--muted) }
.legal h3 { font-size: 19px; margin: 30px 0 8px; max-width: 820px }
.legal .legal-intro { color: var(--ink); font-size: 18px }
.legal .legal-updated { color: var(--dim); font-size: 14px; margin-top: 30px }
.legal a, footer a { color: var(--cyan); text-decoration: none }
.legal a:hover, footer a:hover { text-decoration: underline }

footer { border-top: 1px solid var(--line); background: rgba(3, 7, 24, .6) }
.footer-inner { max-width: var(--max); margin: auto; padding: 28px; display: flex; justify-content: space-between; align-items: center; gap: 20px; font-size: 14px; color: var(--dim); flex-wrap: wrap }
.footer-inner .brand { font-size: 16px }
.footer-inner .brand-mark { width: 24px; height: 24px }

/* ---------- Einblenden beim Scrollen ---------- */
.js .reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s var(--ease), transform .8s var(--ease) }
.js .reveal.in { opacity: 1; transform: none }
.pieces .reveal:nth-child(3n+2), .steps .reveal:nth-child(2), .modes .reveal:nth-child(2) { transition-delay: .1s }
.pieces .reveal:nth-child(3n), .steps .reveal:nth-child(3), .modes .reveal:nth-child(3) { transition-delay: .2s }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; padding-top: 110px; text-align: center; gap: 10px }
  .logo { justify-content: center }
  .lead { margin: auto }
  .hero-art { max-width: 340px; order: -1 }
  .stage-hero { --s: 46px }
  .modes, .steps { grid-template-columns: 1fr }
  .pieces, .shots { grid-template-columns: repeat(2, 1fr) }
  .languages-layout { grid-template-columns: 1fr }
  .demo-body { grid-template-columns: 1fr }
  .demo-figure { margin-top: 0 }
  .facts-inner { grid-template-columns: repeat(2, 1fr) }
  .fact { justify-content: flex-start; padding: 22px 18px }
  .fact:nth-child(3)::before { display: none }
  .fact:nth-child(n + 3) { border-top: 1px solid var(--line) }
}
@media (max-width: 760px) {
  nav { display: none }
  .nav-inner { padding: 0 16px; height: 64px }
  .section { padding: 80px 16px }
  .hero-inner { padding: 90px 16px 90px }
  .facts { padding: 0 16px }
  .fact { flex-direction: column; justify-content: center; gap: 12px; padding: 20px 10px; text-align: center }
  .fact p { text-align: center }
  .fact-icon { width: 42px; height: 42px; padding: 9px }
  .fact strong { font-size: 28px }
  .demo-box { padding: 14px; border-radius: 20px }
  .timer { display: none }
  .hud { flex-direction: row; flex-wrap: wrap; align-items: center; gap: 10px }
  .opt .key { width: 28px; height: 28px; font-size: 14px; top: 6px; left: 6px }
  .demo-figure .stage-demo { min-height: 280px }
  .shots { gap: 12px }
  .shot figcaption { font-size: 12px; line-height: 1.4 }
  .lb-close { top: -52px; right: 0 }
  .opt { aspect-ratio: 1 }
  .options { gap: 10px }
  .scroll-hint { display: none }
  .pieces { gap: 12px }
  .piece { padding: 20px 12px }
  .piece svg { width: 80px; height: 80px }
  .footer-inner { flex-direction: column; align-items: flex-start; padding: 24px 16px }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important }
  .scene.spin { transform: rotateX(-26deg) rotateY(-35deg) }
  .js .reveal { opacity: 1; transform: none }
}