:root {
  --brand: #0497cf;
  --brand-deep: #001b4c;
  --accent: rgb(0, 151, 215);
  --accent-soft: #e9f4ea;
  --sky: #edf7fb;
  --ink: #12243d;
  --muted: #435970;
  --surface: #ffffff;
  --surface-2: #f5f9fc;
  --footer: #0f1f34;
  --line: rgba(0, 27, 76, 0.16);
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-soft: 0 18px 40px rgba(0, 27, 76, 0.1);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Open Sans", "Segoe UI", Tahoma, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(900px 360px at 92% -15%, rgba(4, 151, 207, 0.16), rgba(4, 151, 207, 0) 70%),
    radial-gradient(800px 340px at -10% 12%, rgba(68, 131, 68, 0.13), rgba(68, 131, 68, 0) 72%),
    #f8fbfd;
  line-height: 1.65;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
}

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  padding: 0.5rem 0.75rem;
  z-index: 1000;
  background: #fff;
  border-radius: 6px;
}

.container {
  width: min(var(--max), 92vw);
  margin-inline: auto;
}

.section {
  padding: clamp(2.8rem, 5vw, 4.8rem) 0;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 99;
  backdrop-filter: blur(8px);
  background: rgba(255, 255, 255, 0.93);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  min-height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand img {
  width: min(260px, 54vw);
  height: auto;
}

.main-nav {
  display: flex;
  gap: 0.35rem;
  align-items: center;
}

.main-nav a {
  text-decoration: none;
  font-weight: 700;
  color: var(--brand-deep);
  font-size: 0.95rem;
  padding: 0.52rem 0.72rem;
  border-radius: 999px;
  transition: all 0.22s ease;
}

.main-nav a:hover,
.main-nav a:focus-visible,
.main-nav a.active {
  background: var(--brand);
  color: #fff;
}

.menu-toggle {
  display: none;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 10px;
  padding: 0.55rem 0.78rem;
  font-weight: 700;
}

.hero {
  padding-top: clamp(2.8rem, 5vw, 4.6rem);
}

.hero-layout {
  display: grid;
  grid-template-columns: 1.12fr 0.88fr;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: start;
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.82rem;
  font-weight: 800;
}

h1,
h2,
h3 {
  line-height: 1.2;
  margin-top: 0;
  color: var(--brand-deep);
}

h1 {
  font-size: clamp(2rem, 4.2vw, 3.25rem);
  margin-bottom: 1rem;
  max-width: 19ch;
}

h2 {
  font-size: clamp(1.4rem, 2.4vw, 2.05rem);
  margin-bottom: 0.75rem;
}

h3 {
  font-size: 1.12rem;
  margin-bottom: 0.35rem;
}

.lead {
  font-size: 1.06rem;
  color: var(--muted);
  max-width: 64ch;
}

.hero-cta,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 10px;
  border: 2px solid transparent;
  padding: 0.74rem 1.05rem;
  font-weight: 800;
}

.button.primary {
  background: linear-gradient(140deg, #0497cf, #087fb2);
  color: #fff;
}

.button.primary:hover,
.button.primary:focus-visible {
  filter: brightness(0.95);
}

.button.ghost {
  background: #fff;
  color: var(--brand-deep);
  border-color: rgba(0, 27, 76, 0.22);
}

.hero-panel {
  overflow: hidden;
  background: linear-gradient(160deg, #ffffff 0%, #edf7fb 100%);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-soft);
}

.hero-panel img,
.hero-panel video {
  display: block;
  width: 100%;
  height: 190px;
  object-fit: cover;
  object-position: center;
}

.hero-panel .hero-video-fallback {
  display: none;
}

.panel-content {
  padding: 1.15rem;
}

.panel-content ul {
  margin: 0.45rem 0 0;
  padding-left: 1.15rem;
}

.trust-grid,
.split-grid,
.process-grid {
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
}

.split-grid,
.process-grid {
  grid-template-columns: 0.82fr 1.18fr;
}

.media-card {
  margin: 0;
  overflow: hidden;
  background: #fff;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-soft);
}

.media-card img {
  width: 100%;
  height: clamp(220px, 27vw, 340px);
  object-fit: cover;
}

.media-card.compact img {
  height: clamp(200px, 24vw, 300px);
}

.clsGrundlagenMitochondrium {
  display: grid;
  place-items: center;
  margin: 0;
}

.clsGrundlagenMitochondrium img {
  width: min(100%, 430px);
  height: auto;
}

.process-media img {
  object-fit: contain;
}

.section-head {
  margin-bottom: 1rem;
}

.feature-grid,
.target-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.95rem;
}

.feature-card,
.target-grid article,
details {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.05rem;
  box-shadow: 0 10px 24px rgba(0, 27, 76, 0.06);
}

.feature-card {
  position: relative;
}

.feature-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  border-top: 4px solid var(--brand);
  pointer-events: none;
}

.process {
  background: linear-gradient(180deg, #f6fbfd 0%, #eef7fb 100%);
}

.process-steps {
  margin: 0.7rem 0 0;
  padding-left: 1.2rem;
}

.process-steps li {
  margin-bottom: 0.55rem;
}

.section-highlight {
  padding-top: 2.2rem;
}

.highlight-card {
  background: linear-gradient(160deg, #e8f6fc, #f4fbfe);;
  border: 1px solid rgba(68, 131, 68, 0.24);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadow-soft);
  padding: clamp(1rem, 2.2vw, 2rem);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

details {
  padding: 0;
  overflow: hidden;
}

summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.1rem;
  color: var(--brand-deep);
  font-weight: 800;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: "";
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background-color: rgba(4, 151, 207, 0.14);
  background-image:
    linear-gradient(var(--brand-deep), var(--brand-deep)),
    linear-gradient(var(--brand-deep), var(--brand-deep));
  background-position: center;
  background-repeat: no-repeat;
  background-size: 12px 2px, 2px 12px;
  transition: transform 0.24s ease, background-color 0.24s ease;
}

details[open]:not(.is-closing) summary::after {
  transform: rotate(45deg);
  background: var(--brand);
  background-image:
    linear-gradient(#fff, #fff),
    linear-gradient(#fff, #fff);
  background-position: center;
  background-repeat: no-repeat;
  background-size: 12px 2px, 2px 12px;
}

.details-content {
  height: 0;
  overflow: hidden;
  transition: height 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

details p {
  margin: 0;
  padding: 0 1.1rem 1.1rem;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .details-content,
  summary::after {
    transition: none;
  }

  .hero-panel video {
    display: none;
  }

  .hero-panel .hero-video-fallback {
    display: block;
  }
}

.cta-spotlight {
  padding-top: 2.4rem;
}

.cta-card {
  border-radius: 22px;
  border: 1px solid rgba(0, 27, 76, 0.18);
  background: linear-gradient(145deg, rgba(4, 151, 207, 0.16), rgba(0, 27, 76, 0.08)), #ffffff;
  box-shadow: 0 22px 44px rgba(0, 27, 76, 0.12);
  padding: clamp(1.3rem, 3vw, 2.4rem);
}

.cta-card p {
  max-width: 68ch;
}

.site-footer {
  padding: 2.4rem 0;
  color: #edf3f7;
  background: var(--footer);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 0.9fr;
  gap: 1.5rem;
}

.site-footer h2 {
  color: #fff;
  font-size: 1.08rem;
}

.site-footer a {
  color: #8fd7f2;
}

.footer-logo {
  width: min(260px, 100%);
  height: auto;
  margin-bottom: 0.8rem;
}

@media (max-width: 1030px) {
  .hero-layout,
  .trust-grid,
  .split-grid,
  .process-grid {
    grid-template-columns: 1fr;
  }

  .feature-grid,
  .target-grid,
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .header-inner {
    min-height: 72px;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .main-nav {
    position: absolute;
    right: 4vw;
    top: 72px;
    flex-direction: column;
    align-items: stretch;
    background: #fff;
    min-width: 210px;
    border-radius: 12px;
    padding: 0.55rem;
    border: 1px solid var(--line);
    box-shadow: var(--shadow-soft);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: 0.2s ease;
  }

  .main-nav.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .feature-grid,
  .target-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  h1 {
    max-width: unset;
  }

  .button {
    width: 100%;
  }
}