:root {
  --void: #050505;
  --canvas: #080808;
  --panel: #0f0f0f;
  --panel-raised: #141414;
  --text: #f7f4ee;
  --body: #e4e0d6;
  --muted: #c2beb4;
  --line: rgba(255, 255, 255, 0.16);
  --line-strong: rgba(255, 255, 255, 0.28);
  --bronze: #e0b07c;
  --bronze-dark: #8c5f38;
  --yellow: #ffd400;
  --red: #f66363;
  --blue: #2b94fe;
  --display: "Arial Black", "Helvetica Neue", Arial, sans-serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  --measure: 42rem;
  --wrap: 72rem;
  --gutter: clamp(1rem, 4vw, 1.75rem);
  --header-h: 4.5rem;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--void); }
body {
  min-width: 320px;
  margin: 0;
  overflow-x: clip;
  background: var(--void);
  color: var(--text);
  font-family: var(--sans);
  font-size: clamp(1.02rem, 0.3vw + 1rem, 1.0625rem);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.nav-open { overflow: hidden; }
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { color: inherit; font: inherit; }
a, button, summary { touch-action: manipulation; }
::selection { color: var(--void); background: var(--yellow); }
:focus-visible { outline: 2px solid var(--yellow); outline-offset: 4px; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
  background:
    radial-gradient(70% 55% at 94% -8%, rgba(246, 99, 99, 0.08), transparent 58%),
    radial-gradient(50% 40% at 0% 88%, rgba(255, 212, 0, 0.04), transparent 64%),
    linear-gradient(180deg, #050505 0%, #090909 38%, #050505 100%);
}
.maze, .dots, .grain, .glow { position: absolute; }
.maze {
  inset: -2px;
  opacity: 0.22;
  background-image:
    repeating-linear-gradient(0deg, transparent 0 47px, rgba(33, 33, 222, 0.18) 47px 48px),
    repeating-linear-gradient(90deg, transparent 0 47px, rgba(33, 33, 222, 0.18) 47px 48px);
  mask-image: radial-gradient(ellipse 70% 50% at 96% 0%, #000 0%, transparent 70%);
}
.dots {
  inset: 0;
  opacity: 0.14;
  background-image: radial-gradient(circle, var(--yellow) 1.1px, transparent 1.45px);
  background-size: 24px 24px;
  background-position: 12px 12px;
  mask-image: radial-gradient(ellipse 58% 42% at 96% 0%, #000 0%, transparent 64%);
}
.grain {
  inset: 0;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  mix-blend-mode: soft-light;
}
.glow { border-radius: 50%; filter: blur(16px); }
.glow-red { width: 36vmax; height: 36vmax; right: -18vmax; top: -22vmax; background: radial-gradient(circle, rgba(246, 99, 99, 0.1), transparent 65%); }
.glow-yellow { width: 28vmax; height: 28vmax; left: -15vmax; top: 62vh; background: radial-gradient(circle, rgba(255, 212, 0, 0.05), transparent 66%); }

.skip-link {
  position: fixed;
  z-index: 30;
  top: max(12px, env(safe-area-inset-top));
  left: max(12px, env(safe-area-inset-left));
  padding: 10px 14px;
  transform: translateY(-160%);
  background: var(--yellow);
  color: var(--void);
  font: 650 14px/1.3 var(--sans);
}
.skip-link:focus { transform: translateY(0); }

.site-shell { position: relative; z-index: 1; }
.wrap,
.wrap-narrow,
.not-found {
  width: min(calc(100% - 2 * var(--gutter)), var(--wrap));
  max-width: 100%;
  margin-inline: auto;
}
.wrap-narrow { width: min(calc(100% - 2 * var(--gutter)), 47.5rem); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 12;
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--void) 88%, transparent);
  backdrop-filter: blur(12px);
}
.header-inner {
  display: flex;
  min-height: var(--header-h);
  align-items: center;
  justify-content: space-between;
  gap: clamp(12px, 2vw, 24px);
  padding-top: env(safe-area-inset-top);
}
.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.brand img { width: 34px; height: 34px; image-rendering: pixelated; }

.nav-toggle {
  display: none;
  min-height: 44px;
  min-width: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font: 600 13px/1.2 var(--sans);
}
.nav-toggle:hover { border-color: var(--bronze); }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 22px);
  color: var(--muted);
  font: 550 14px/1.2 var(--sans);
}
.site-nav a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  transition: color 0.18s ease;
}
.site-nav a:hover,
.site-nav a.is-active,
.site-nav a[aria-current="page"] { color: var(--text); }
.nav-item { position: relative; display: inline-flex; align-items: center; }
.nav-pair {
  display: inline-flex;
  align-items: center;
  gap: 0;
}
.nav-more {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}
.nav-more:hover,
.nav-more:focus-visible,
.nav-item.is-open .nav-more { color: var(--bronze); }
.nav-chevron {
  display: block;
  flex: none;
  width: 14px;
  height: 14px;
  transition: transform 0.18s ease;
}
.nav-item.is-open .nav-chevron,
.nav-item:hover .nav-chevron,
.nav-item:focus-within .nav-chevron { transform: rotate(180deg); }
.nav-sub {
  display: none;
  position: absolute;
  top: calc(100% - 6px);
  right: 0;
  z-index: 8;
  min-width: 280px;
  max-width: min(90vw, 360px);
  padding: 10px 0;
  border: 1px solid var(--line);
  background: rgba(15, 15, 15, 0.98);
}
.nav-item:hover .nav-sub,
.nav-item:focus-within .nav-sub,
.nav-item.is-open .nav-sub { display: grid; }
.nav-sub a {
  display: flex;
  min-height: 44px;
  padding: 8px 16px;
  color: var(--body);
  font: 500 14px/1.35 var(--sans);
  overflow-wrap: anywhere;
}
.nav-sub a:hover,
.nav-sub a.is-active,
.nav-sub a[aria-current="page"] { color: var(--text); background: rgba(224, 176, 124, 0.08); }

.module-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 12px 0 16px;
  border-bottom: 1px solid var(--line);
}
.module-strip a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  padding: 0 12px;
  border: 1px solid var(--line);
  color: var(--muted);
  font: 650 13px/1 var(--sans);
}
.module-strip a:hover,
.module-strip a.is-active,
.module-strip a[aria-current="page"] {
  border-color: var(--bronze);
  color: var(--bronze);
}

.kicker {
  margin: 0;
  color: var(--bronze);
  font: 650 13px/1.5 var(--sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 18px;
  border: 1px solid var(--line-strong);
  font: 600 15px/1.2 var(--sans);
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}
.button-primary { border-color: var(--bronze); background: var(--bronze); color: #111; }
.button-primary:hover { border-color: #ebc094; background: #ebc094; }
.button-quiet:hover { border-color: var(--bronze); background: var(--panel-raised); }
.button.is-inactive {
  opacity: 0.7;
  color: var(--muted);
  cursor: not-allowed;
}
.button.is-inactive:hover { border-color: var(--line-strong); background: transparent; }
.hero-actions, .link-row { display: flex; flex-wrap: wrap; gap: 12px; }

.page-hero, .page-heading {
  padding: clamp(40px, 6vw, 88px) 0 clamp(28px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}
.page-hero h1, .page-heading h1 {
  max-width: 18ch;
  margin: 16px 0 20px;
  font-family: var(--display);
  font-size: clamp(2.1rem, 6vw, 4.5rem);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.04em;
  overflow-wrap: anywhere;
}
.page-hero h1 em, .page-heading h1 em { color: var(--bronze); font-style: normal; }
.lede {
  max-width: var(--measure);
  margin: 0;
  color: var(--body);
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.6;
}
.hero-actions { margin-top: 28px; }

.banner-figure {
  margin-block: 0;
  margin-inline: auto;
  padding: clamp(28px, 5vw, 56px) 0;
}
.banner-figure img {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--panel);
}
.banner-figure.is-compact {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 28px 0 8px;
}
.banner-figure.is-compact img {
  width: min(100%, 280px);
  height: auto;
  max-height: none;
  margin-inline: auto;
  object-fit: contain;
  image-rendering: auto;
}
.banner-figure figcaption {
  margin-top: 12px;
  color: var(--muted);
  font: 13px/1.5 var(--sans);
}
.banner-figure.is-compact figcaption {
  max-width: min(100%, 22rem);
  text-align: center;
}

.prose {
  padding: clamp(28px, 4vw, 64px) 0 24px;
  color: var(--body);
  font-size: clamp(1.05rem, 0.4vw + 1rem, 1.125rem);
  line-height: 1.75;
}
.prose p { max-width: var(--measure); margin: 0 0 1.25em; }
.prose p:last-child { margin-bottom: 0; }
.prose a {
  color: var(--bronze);
  text-decoration: underline;
  text-decoration-color: color-mix(in srgb, var(--bronze) 55%, transparent);
  text-underline-offset: 0.2em;
}
.prose a:hover { color: var(--text); }
code {
  font-family: var(--mono);
  font-size: 0.88em;
  overflow-wrap: anywhere;
}
:not(pre) > code {
  padding: 0.16em 0.38em;
  background: var(--panel-raised);
  color: var(--yellow);
}
pre.code-block {
  max-width: var(--measure);
  margin: 0 0 1.25em;
  overflow-x: auto;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  background: var(--panel-raised);
}
pre.code-block code {
  display: block;
  padding: 0;
  background: none;
  color: var(--body);
  font-size: 0.9em;
  line-height: 1.55;
  white-space: pre;
}
.hljs-keyword,
.hljs-selector-tag,
.hljs-built_in { color: var(--blue); }
.hljs-string,
.hljs-attr { color: var(--yellow); }
.hljs-name,
.hljs-tag,
.hljs-title { color: var(--bronze); }
.hljs-comment { color: var(--muted); }
.hljs-number,
.hljs-literal { color: var(--red); }
.hljs-punctuation,
.hljs-operator { color: var(--body); }

.section-block { padding: 0 0 clamp(36px, 5vw, 72px); }
.section-block h2 {
  max-width: 22ch;
  margin: 0 0 18px;
  font-family: var(--display);
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.section-block .prose { padding-top: 0; }
.section-block ul {
  max-width: var(--measure);
  margin: 0;
  padding: 0;
  list-style: none;
}
.section-block li {
  padding: 14px 0;
  border-top: 1px solid var(--line);
  color: var(--body);
  font-size: 1.05rem;
  line-height: 1.65;
}
.section-block li:last-child { border-bottom: 1px solid var(--line); }
.link-row { margin-top: 24px; }

.legal-address {
  display: block;
  max-width: var(--measure);
  margin: 0 0 8px;
  font-style: normal;
  color: var(--body);
  font-size: 1.125rem;
  line-height: 1.7;
}
.legal-address p { margin: 0; }

.module-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(12px, 1.4vw, 16px);
  padding: 8px 0 clamp(56px, 7vw, 96px);
}
.module-card {
  position: relative;
  min-height: 180px;
  grid-column: span 4;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: clamp(18px, 2vw, 22px);
  border: 1px solid var(--line);
  background: rgba(15, 15, 15, 0.92);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.module-card:hover {
  border-color: color-mix(in srgb, var(--bronze) 72%, transparent);
  background: #121212;
}
.module-card span {
  color: var(--bronze);
  font: 650 12px/1.3 var(--sans);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.module-card h2 {
  margin: auto 0 0;
  max-width: 18ch;
  font-family: var(--display);
  font-size: clamp(1.25rem, 2vw, 1.875rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.aufgabe-list {
  margin-block: 0;
  margin-inline: auto;
  padding-block: 8px clamp(48px, 6vw, 96px);
  padding-inline: 0;
  list-style: none;
}
.aufgabe {
  padding: clamp(1.75rem, 3.2vw, 2.75rem) 0;
  border-bottom: 1px solid var(--line);
}
.aufgabe:first-child { border-top: 1px solid var(--line); }
.aufgabe article {
  display: grid;
  gap: 0;
}
.aufgabe-topline {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 10px 20px;
  margin-bottom: 12px;
  color: var(--muted);
  font: 650 13px/1.4 var(--sans);
}
.aufgabe h2 {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}
.aufgabe .prose { padding: 0 0 8px; font-size: 1.0625rem; }
.stars {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
}
.stars-visual {
  color: var(--yellow);
  letter-spacing: 0.08em;
  font-size: 14px;
}
.hints {
  max-width: var(--measure);
  margin-top: 20px;
  border: 1px solid var(--line);
  background: rgba(15, 15, 15, 0.72);
}
.hints summary {
  display: flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 0 16px;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font: 650 15px/1.3 var(--sans);
  user-select: none;
}
.hints summary::-webkit-details-marker { display: none; }
.hints summary i {
  color: var(--bronze);
  font-style: normal;
  font-size: 20px;
  font-weight: 300;
}
.hints ul {
  margin: 0;
  padding: 4px 16px 18px 2.1em;
  border-top: 1px solid var(--line);
  color: var(--body);
  font-size: 1.05rem;
  line-height: 1.7;
}
.hints li { padding: 8px 0; }
.hints li + li { border-top: 1px solid rgba(255, 255, 255, 0.08); }

.group-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
  gap: clamp(14px, 2vw, 22px);
  padding: 8px 0 clamp(56px, 7vw, 96px);
}
.group-card {
  display: flex;
  min-height: 200px;
  flex-direction: column;
  padding: clamp(18px, 2vw, 24px);
  border: 1px solid var(--line);
  background: rgba(15, 15, 15, 0.9);
}
.group-card h2 {
  margin: 0 0 14px;
  font-family: var(--display);
  font-size: clamp(1.15rem, 1.8vw, 1.5rem);
  line-height: 1.25;
  letter-spacing: -0.03em;
}
.group-card ul { margin: 0; padding: 0; list-style: none; }
.group-card li { border-top: 1px solid var(--line); }
.group-card a {
  display: flex;
  min-height: 44px;
  align-items: center;
  padding: 10px 0;
  color: var(--bronze);
  font: 600 15px/1.45 var(--sans);
  overflow-wrap: anywhere;
}
.group-card a:hover { color: var(--text); }

.media-block { padding: 12px 0 clamp(40px, 6vw, 72px); }
.media-block img {
  width: 100%;
  border: 1px solid var(--line);
  background: var(--panel);
}
.cta-block { padding: 0 0 clamp(48px, 7vw, 80px); }

.page-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 24px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-nav a {
  min-width: 0;
  min-height: 44px;
  padding: clamp(20px, 3vw, 28px) 0;
}
.page-nav a + a { text-align: right; }
.page-nav a:hover { color: var(--bronze); }
.page-nav span {
  display: block;
  margin-bottom: 8px;
  color: var(--muted);
  font: 13px/1.3 var(--sans);
}
.page-nav strong {
  display: block;
  overflow-wrap: anywhere;
  font-family: var(--display);
  font-size: clamp(1rem, 2vw, 1.375rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.not-found {
  min-height: 320px;
  margin: 72px auto;
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--line);
  background: rgba(15, 15, 15, 0.9);
}
.not-found h1 {
  max-width: 12ch;
  margin: 16px 0;
  font-family: var(--display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}
.not-found p { max-width: var(--measure); color: var(--muted); }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(20px, 4vw, 36px);
  padding: clamp(32px, 5vw, 48px) 0 max(28px, env(safe-area-inset-bottom));
}
.footer-lockup { display: flex; align-items: center; gap: 14px; }
.footer-logo {
  display: flex;
  flex-shrink: 0;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.footer-lockup img { image-rendering: pixelated; }
.footer-lockup strong { font-family: var(--display); font-size: 20px; letter-spacing: -0.03em; }
.footer-lockup p {
  margin: 2px 0 0;
  color: var(--muted);
  font: 13px/1.4 var(--sans);
}
.footer-lockup a { color: inherit; }
.footer-lockup a:hover { color: var(--bronze); }
.footer-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 8px 24px;
  color: var(--muted);
  font: 500 15px/1.3 var(--sans);
}
.footer-links a {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
}
.footer-links a:hover { color: var(--bronze); }

@media (max-width: 1100px) {
  .module-card { grid-column: span 6; }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .header-inner { flex-wrap: wrap; }
  .site-nav {
    display: none;
    flex: 1 1 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-height: min(70vh, 36rem);
    overflow: auto;
    padding: 8px 0 16px;
    border-top: 1px solid var(--line);
  }
  .site-nav.is-open { display: flex; }
  .site-nav > a,
  .nav-pair > a {
    padding-inline: 4px;
  }
  .nav-item {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
  }
  .nav-pair {
    display: flex;
    flex: 1 1 100%;
    align-items: center;
    justify-content: space-between;
  }
  .nav-item:hover .nav-chevron,
  .nav-item:focus-within .nav-chevron { transform: none; }
  .nav-item.is-open .nav-chevron { transform: rotate(180deg); }
  .nav-item:hover .nav-sub,
  .nav-item:focus-within .nav-sub { display: none; }
  .nav-item.is-open .nav-sub {
    display: grid;
    flex: 1 1 100%;
    position: static;
    min-width: 0;
    max-width: none;
    border: 0;
    background: transparent;
    padding: 0 0 8px;
  }
  .nav-sub a { padding-left: 20px; }
}

@media (max-width: 720px) {
  :root { --header-h: 4rem; }
  .page-hero, .page-heading { padding: 40px 0 28px; }
  .page-hero h1, .page-heading h1 { margin: 14px 0 16px; }
  .hero-actions { margin-top: 24px; }
  .page-nav { grid-template-columns: 1fr; }
  .page-nav a + a { border-top: 1px solid var(--line); text-align: left; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-links { justify-content: flex-start; }
}

@media (max-width: 600px) {
  .module-grid { display: flex; flex-direction: column; }
  .module-card { min-height: 140px; }
  .group-grid { grid-template-columns: 1fr; }
  .hero-actions, .link-row { display: grid; }
  .button { width: 100%; }
}

@media (max-width: 430px) {
  .brand { font-size: 14px; }
  .module-strip { gap: 6px; }
  .module-strip a { padding-inline: 10px; }
}

@media (hover: none) {
  .module-card:hover { border-color: var(--line); background: rgba(15, 15, 15, 0.92); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .module-card, .hints summary i, .nav-chevron { transition: none; }
}