:root{
  --bg:#ffffff;
  --surface:#f6f8f7;
  --text:#111827;
  --muted:#4b5563;
  --border:#e5e7eb;
  --accent:#1a9b5a;
  --accent-2:#0f7a45;
  --shadow:0 10px 30px rgba(17,24,39,.08);
  --radius:18px;
  --max:1120px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,Helvetica,sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.5;
}
a{color:inherit}
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible{
  outline:3px solid rgba(26,155,90,.35);
  outline-offset:2px;
  border-radius:10px;
}
.skip-link{
  position:absolute;
  left:-999px;
  top:0;
  background:var(--text);
  color:#fff;
  padding:10px 14px;
  border-radius:12px;
  z-index:999;
}
.skip-link:focus{left:12px; top:12px}

.container{max-width:var(--max); margin:0 auto; padding:0 18px}
header{
  position:sticky;
  top:0;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(1.4) blur(10px);
  border-bottom:1px solid var(--border);
  z-index:50;
}
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:12px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
}
.brand-badge{
  width:34px; height:34px; border-radius:12px;
  background:var(--accent);
  display:inline-flex; align-items:center; justify-content:center;
  color:#fff; font-weight:800;
}
.brand-name{
  font-weight:800;
  letter-spacing:.2px;
}
nav ul{
  list-style:none;
  display:flex;
  gap:14px;
  padding:0; margin:0;
}
nav a{
  text-decoration:none;
  padding:10px 10px;
  color:var(--muted);
  border-radius:12px;
}
nav a[aria-current="page"]{color:var(--text); background:var(--surface)}
nav a:hover{background:var(--surface); color:var(--text)}
.header-cta{
  display:flex;
  align-items:center;
  gap:10px;
}
.phone{
  display:flex; flex-direction:column;
  align-items:flex-end;
  gap:2px;
}
.phone a{
  text-decoration:none;
  font-weight:700;
}
.phone small{color:var(--muted)}
.btn{
  appearance:none; border:1px solid var(--border);
  background:#fff;
  color:var(--text);
  padding:12px 14px;
  border-radius:14px;
  font-weight:700;
  cursor:pointer;
  text-decoration:none;
  display:inline-flex; align-items:center; justify-content:center;
  gap:10px;
}
.btn.primary{
  border-color:var(--accent);
  background:var(--accent);
  color:#fff;
}
.btn.primary:hover{background:var(--accent-2); border-color:var(--accent-2)}
.btn.ghost{background:transparent}
.btn.small{padding:10px 12px; border-radius:12px}

main{padding:34px 0 54px}
.hero{
  display:grid;
  grid-template-columns: 1.25fr .95fr;
  gap:26px;
  align-items:center;
}
.hero-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:26px;
  box-shadow:var(--shadow);
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-weight:700;
  color:var(--muted);
}
.kicker-dot{
  width:10px; height:10px; border-radius:99px;
  background:var(--accent);
}
h1{
  font-size:44px;
  line-height:1.08;
  margin:14px 0 10px;
  letter-spacing:-.6px;
}
.subline{
  font-size:18px;
  color:var(--muted);
  margin:0 0 14px;
}
.lead{
  margin:0 0 18px;
  color:var(--text);
}
.hero-actions{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin:18px 0 0;
}
.trust{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:16px;
}
.pill{
  background:#fff;
  border:1px solid var(--border);
  border-radius:999px;
  padding:10px 12px;
  font-weight:700;
  color:var(--muted);
  display:inline-flex;
  align-items:center;
  gap:10px;
}
.pill i{
  width:10px; height:10px; border-radius:99px; background:var(--accent);
  display:inline-block;
}
.hero-portrait{
  border-radius:var(--radius);
  overflow:hidden;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  background:#fff;
}
.hero-portrait img{
  width:100%;
  height:auto;
  display:block;
}

.section{margin-top:22px}
.grid-two{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap:18px;
  align-items:start;
}
.booking-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
}
.booking-head{
  display:flex;
  justify-content:space-between;
  align-items:flex-start;
  gap:12px;
  margin-bottom:10px;
}
.booking-head h2{font-size:20px; margin:0}
.booking-head p{margin:6px 0 0; color:var(--muted)}
.notice{font-size:13px; color:var(--muted); margin-top:10px}
.cal-shell{
  border:1px dashed rgba(26,155,90,.35);
  border-radius:14px;
  padding:14px;
  background:rgba(26,155,90,.05);
  min-height:280px;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  color:var(--muted);
}

.cards{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap:14px;
  margin-top:18px;
}
.card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:16px;
  box-shadow:var(--shadow);
}
.card h3{margin:0 0 8px; font-size:16px}
.card p{margin:0; color:var(--muted)}

.about-mini{
  display:flex;
  gap:14px;
  align-items:center;
  margin-top:18px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:16px;
}
.about-mini img{
  width:76px; height:76px;
  border-radius:18px;
  object-fit:cover;
  border:1px solid var(--border);
}
.about-mini p{margin:0; color:var(--muted)}
.about-mini a{font-weight:700; color:var(--text); text-decoration:none}
.about-mini a:hover{text-decoration:underline}

footer{
  border-top:1px solid var(--border);
  padding:18px 0;
  color:var(--muted);
  font-size:14px;
}
.footer-row{
  display:flex;
  justify-content:space-between;
  gap:12px;
  flex-wrap:wrap;
}
.footer-row a{color:var(--muted); text-decoration:none}
.footer-row a:hover{text-decoration:underline}

.page-head{max-width:900px; margin:0 auto 18px}
.page-head h1{font-size:34px}
.page-head p{color:var(--muted); margin:10px 0 0}

.blocks{
  display:grid;
  gap:14px;
  max-width:900px;
  margin:0 auto;
}
.block{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px;
  box-shadow:var(--shadow);
}
.block h2{margin:0 0 10px; font-size:20px}
.block p{margin:0; color:var(--muted)}
.details{margin-top:12px; border-top:1px solid var(--border); padding-top:12px}
details{
  border:1px solid var(--border);
  border-radius:14px;
  padding:12px;
  background:var(--surface);
}
details + details{margin-top:10px}
summary{font-weight:800; cursor:pointer}
.summary-note{color:var(--muted); margin-top:8px; font-size:14px}

@media (max-width: 980px){
  .hero{grid-template-columns:1fr}
  .phone{align-items:flex-start}
  .header-cta{flex-direction:row; align-items:center}
  .cards{grid-template-columns: repeat(2, 1fr)}
  nav ul{gap:8px}
}
@media (max-width: 560px){
  h1{font-size:34px}
  .topbar{flex-wrap:wrap}
  .header-cta{width:100%; justify-content:space-between}
  .cards{grid-template-columns:1fr}
  nav{width:100%}
  nav ul{flex-wrap:wrap}
}

/* Expertenlogo (Energieeffizienz-Expertenliste) */
.eee-strip{
  display:flex;
  gap:12px;
  align-items:center;
  flex-wrap:wrap;
  margin-top:14px;
}
.eee-strip a{display:inline-flex; align-items:center; text-decoration:none}
.eee-logo{
  height:38px;
  width:auto;
  display:block;
  border-radius:10px;
}
.eee-note{
  color:var(--muted);
  font-weight:650;
  font-size:13px;
  line-height:1.35;
  max-width:520px;
}
.eee-note a{color:inherit; text-decoration:underline}