:root{
  --container: 1100px;

  --teal: #0a8f96;
  --teal-dark: #087b81;

  --orange: #f2a400;
  --green: #7ebf28;

  --text: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;

  --shadow: 0 14px 40px rgba(2, 6, 23, .12);
  --radius: 14px;
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color: var(--text);
  background: #fff;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }

.container{
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

/* HEADER */
.site-header{
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 1px solid var(--line);
  z-index: 99999;
}

/* Platz schaffen, damit der Content nicht unter dem Header startet */
body{
  padding-top: 72px; /* ggf. an Header-Höhe anpassen */
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 14px 0;
}
.brand-logo{ height: 77px; width: auto; }

.main-nav{
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 1;
  justify-content: center;
}
.nav-link{
  font-weight: 800;
  letter-spacing: .04em;
  font-size: 13px;
  padding: 8px 10px;
  color: #0b1220;
}
.nav-link.is-active{
  border-bottom: 3px solid var(--orange);
  padding-bottom: 10px;
}

.social{
  display: flex;
  gap: 10px;
  align-items: center;
}
.social-link{
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
}
.social-link img{ width: 22px; height: 22px; }

/* HERO */
.hero{
  border-bottom: 1px solid var(--line);
}
.hero-inner{
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  min-height: 320px;
}
.hero-left{
  background: var(--teal);
  color: #fff;
  padding: 46px 38px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 14px;
}
.hero-title{
  margin: 0;
  font-size: 40px;
  line-height: 1.02;
  letter-spacing: .02em;
  font-weight: 900;
}
.hero-text{
  margin: 0;
  max-width: 38ch;
  font-size: 13px;
  line-height: 1.5;
  opacity: .95;
}
.hero-right{
  background: #f1f5f9;
  overflow: hidden;
}
.hero-image{
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* CENTER LOGO */
.brand-center{
  padding: 36px 0 14px;
}
.brand-center-inner{
  display: grid;
  place-items: center;
}
.brand-center-logo{
  width: 220px;
  height: auto;
}

/* BENEFITS */
.benefits{
  padding: 16px 0 56px;
}
.card-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin: 18px auto 18px;
}

.info-card{
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow);
  border: 1px solid rgba(226,232,240,.8);
}
.card-top{
  padding: 16px 16px 14px;
  color: #fff;
}
.card-top--orange{ background: var(--teal); }
.card-top--teal{ background: var(--teal); }
.card-top--green{ background: var(--teal); }

.card-title{
  margin: 0;
  font-size: 14px;
  font-weight: 900;
  line-height: 1.15;
}
.card-body{ padding: 16px; }
.card-text{
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
}

/* EIN PROJEKT VON */
.project-by{
  margin-top: 18px;
  display: grid;
  place-items: center;
  gap: 10px;
}
.project-by-label{
  margin: 0;
  font-size: 12px;
  color: var(--muted);
}
.project-by-logos{
  width: min(760px, 100%);
  height: auto;
}

/* FAQ */
.faq{
  margin: 18px auto 0;
  max-width: 820px;
  border-top: 1px solid var(--line);
}
.faq-item{
  border-bottom: 1px solid var(--line);
  padding: 8px 0;
}
.faq-item summary{
  cursor: pointer;
  list-style: none;
  font-weight: 800;
  color: #0b1220;
  padding: 14px 4px;
  position: relative;
  font-size: 13px;
}
.faq-item summary::-webkit-details-marker{ display:none; }

.faq-item summary::after{
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-weight: 900;
  color: var(--muted);
}
.faq-item[open] summary::after{ content: "–"; }

.faq-content{
  padding: 0 4px 14px;
  color: var(--muted);
  font-size: 12.5px;
  line-height: 1.55;
}

/* CTA */
.cta{
  border-top: 1px solid var(--line);
}
.cta-inner{
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  min-height: 280px;
}
.cta-left{
  background: var(--teal);
  color: #fff;
  padding: 44px 38px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 18px;
}
.cta-title{
  margin: 0;
  font-size: 34px;
  line-height: 1.05;
  font-weight: 900;
  letter-spacing: .02em;
}
.cta-actions{
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 40px;
  padding: 0 16px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 14px;
  border: 2px solid transparent;
}

.btn-primary{
  background: #fff;
  color: #0ea5a8;   /* BLAUE SCHRIFT */
  border-color: #fff;
}

.btn-primary:hover{
  background: #f3f3f3;
}


.btn-secondary{
  background: rgba(255,255,255,.14);
  color: #fff;
  border-color: rgba(255,255,255,.35);
}
.btn-secondary:hover{ background: rgba(255,255,255,.18); }

.cta-right{
  background: #f1f5f9;
  overflow: hidden;
}
.cta-image{
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* THANK YOU */
.thanks{
  padding: 52px 0 64px;
}
.thanks-title{
  text-align: center;
  margin: 0 0 22px;
  font-size: 18px;
  line-height: 1.25;
  color: var(--teal-dark);
  font-weight: 900;
}

/* Sponsor grid: skalierbar + „einfügbar“ */
.sponsor-grid{
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  max-width: 900px;
  margin: 0 auto;
}
.sponsor-item{
  height: 100px;
  background: #fff;
  border: 1px solid rgba(226,232,240,.9);
  border-radius: 10px;
  box-shadow: 0 10px 26px rgba(2,6,23,.06);
  display: grid;
  place-items: center;
  padding: 10px;
}
.sponsor-item img{
  max-height: 80px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  filter: saturate(.95);
}

/* FOOTER SHARE */
.site-footer{
  background: #ecfeff;
  border-top: 1px solid rgba(226,232,240,.7);
  padding: 40px 0 28px;
}
.footer-inner{
  display: grid;
  place-items: center;
  gap: 14px;
}
.footer-title{
  margin: 0;
  text-align: center;
  color: var(--teal-dark);
  font-size: 18px;
  font-weight: 900;
  line-height: 1.25;
}
.footer-social{
  display: flex;
  gap: 10px;
  align-items: center;
}
.footer-social-link{
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: #0b7e83;
  display: grid;
  place-items: center;
}
.footer-social-link img{
  width: 16px;
  height: 16px;
  filter: brightness(10);
}

.footer-links{
  display: flex;
  gap: 22px;
  flex-wrap: wrap;
  justify-content: center;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .04em;
  color: rgba(15, 23, 42, .65);
}
.footer-links a:hover{
  color: rgba(15, 23, 42, .9);
}

/* RESPONSIVE */
@media (max-width: 920px){
  .main-nav{ display: none; }
  .hero-inner, .cta-inner{ grid-template-columns: 1fr; }
  .hero-right, .cta-right{ min-height: 240px; }
}

@media (max-width: 980px){
  .sponsor-grid{ grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 760px){
  .card-grid{ grid-template-columns: 1fr; }
  .sponsor-grid{ grid-template-columns: repeat(2, 1fr); }
  .hero-title{ font-size: 34px; }
  .cta-title{ font-size: 30px; }
}