:root{
  --bg:#eef1ea;
  --header:#dfe6d7;
  --nav:#4f6f3f;
  --navHover:#3e5c30;
  --text:#222;
  --card:#ffffff;
  --shadow:0 15px 40px rgba(0,0,0,.08);
  --radius:16px;
}

*{box-sizing:border-box;}

body{
  margin:0;
  font-family: Arial, Helvetica, sans-serif;
  background:var(--bg);
  color:var(--text);
}

/* HEADER */
.header{
  background:var(--header);
  text-align:center;
  padding:40px 20px 30px;
}

.logo{
  max-height:90px;
  display:block;
  margin:0 auto;
}

.brand-title{
  font-size:28px;
  font-weight:700;
  margin-top:10px;
}

.brand-sub{
  font-size:16px;
  color:#3d5a32;
  margin-top:6px;
}

/* NAVIGATION */
.navbar{
  background:var(--nav);
  text-align:center;
  padding:15px 10px;
}

.navbar a{
  color:#fff;
  text-decoration:none;
  margin:0 18px;
  font-size:16px;
  font-weight:500;
}

.navbar a:hover{
  opacity:.75;
}

.navbar a.active{
  text-decoration:underline;
}

/* CONTENT */
.container{
  max-width:1000px;
  margin:60px auto;
  padding:20px;
}

.card{
  background:var(--card);
  border-radius:var(--radius);
  padding:50px;
  box-shadow:var(--shadow);
  margin-bottom:40px;
}

h1{
  font-size:34px;
  margin-bottom:30px;
}

h2{
  font-size:22px;
  margin-top:35px;
}

/* FOOTER */
.footer{
  text-align:center;
  padding:30px 20px;
  font-size:14px;
  color:#666;
}

.footer a{
  color:#4f6f3f;
  text-decoration:none;
}

.footer a:hover{
  text-decoration:underline;
}

/* MOBILE */
@media(max-width:768px){

  .navbar a{
    display:block;
    margin:10px 0;
  }

  .card{
    padding:30px;
  }

  h1{
    font-size:26px;
  }
}
/* CARD HOVER EFFECT */
.card{
  transition:transform .35s ease, box-shadow .35s ease;
}

.card:hover{
  transform:translateY(-6px);
  box-shadow:0 25px 60px rgba(0,0,0,.15);
}
/* NAV HOVER ANIMATION */
.navbar a{
  position:relative;
  transition:all .3s ease;
}

.navbar a::after{
  content:"";
  position:absolute;
  width:0;
  height:2px;
  background:#ffffff;
  left:0;
  bottom:-6px;
  transition:width .3s ease;
}

.navbar a:hover::after{
  width:100%;
}
/* CARD HOVER EFFECT */
.card{
  transition:transform .35s ease, box-shadow .35s ease;
}

.card:hover{
  transform:translateY(-6px);
  box-shadow:0 25px 60px rgba(0,0,0,.15);
}
/* ============================= */
/* PREMIUM BUTTON DESIGN */
/* ============================= */

.btn{
  display:inline-block;
  padding:14px 28px;
  border-radius:30px;
  text-decoration:none;
  font-weight:600;
  font-size:16px;
  transition:all .3s ease;
  cursor:pointer;
  margin:10px 10px 10px 0;
}

/* Primary Button – Kontakt */
.btn-primary{
  background:var(--nav);
  color:#fff;
  box-shadow:0 8px 25px rgba(79,111,63,.35);
}

.btn-primary:hover{
  background:var(--navHover);
  transform:translateY(-3px);
  box-shadow:0 15px 35px rgba(79,111,63,.45);
}

/* Secondary Button – Newsletter */
.btn-secondary{
  background:#ffffff;
  color:var(--nav);
  border:2px solid var(--nav);
}

.btn-secondary:hover{
  background:var(--nav);
  color:#fff;
  transform:translateY(-3px);
}

/* CTA BUTTON CENTERING */
.cta-container{
  margin-top:40px;
  display:flex;
  justify-content:center;
  align-items:center;
  flex-wrap:wrap;
  gap:20px;
}
/* BUTTON ICON */
.btn i{
  margin-right:10px;
  font-style:normal;
  display:inline-block;
  transition:transform .3s ease;
}

.btn:hover i{
  transform:translateX(4px);
}
/* BUTTON ICON DESIGN */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
}

.btn-icon{
  font-size:18px;
  transition:transform .3s ease;
}

.btn:hover .btn-icon{
  transform:translateX(4px);
}
/* BUTTON ICON DESIGN */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
}

.btn{
  min-width:220px;
  justify-content:center;
}
.btn-icon{
  font-size:18px;
  transition:transform .3s ease;
}

.btn:hover .btn-icon{
  transform:translateX(4px);
}
<div class="cta-container">
  <a href="kontakt.php" class="btn btn-primary">
    <span class="btn-icon">☎</span>
    Kontakt aufnehmen
  </a>

  <a href="newsletter.php" class="btn btn-secondary">
    <span class="btn-icon">✉</span>
    Newsletter abonnieren
  </a>
</div>
/* DEZENTE HINTERGRUND-TRENNLINIE */
.cta-container{
  margin-top:50px;
  padding-top:35px;
  position:relative;
  display:flex;
  justify-content:center;
  align-items:center;
  flex-wrap:wrap;
  gap:20px;
}

.cta-container::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:180px;
  height:2px;
  background:linear-gradient(
    to right,
    transparent,
    rgba(79,111,63,.5),
    transparent
  );
}
/* DEZENTE HINTERGRUND-TRENNLINIE */
.cta-container{
  margin-top:50px;
  padding-top:35px;
  position:relative;
  display:flex;
  justify-content:center;
  align-items:center;
  flex-wrap:wrap;
  gap:20px;
}

.cta-container::before{
  content:"";
  position:absolute;
  top:0;
  left:50%;
  transform:translateX(-50%);
  width:120px;
  height:2px;
  background:linear-gradient(
    to right,
    transparent,
    rgba(79,111,63,.5),
    transparent
  );
}
/* ============================= */
/* GALERIE GRID */
/* ============================= */

.gallery-grid{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap:25px;
  margin-top:30px;
}

.gallery-item{
  overflow:hidden;
  border-radius:16px;
  box-shadow:var(--shadow);
  background:#fff;
  transition:transform .35s ease, box-shadow .35s ease;
}

.gallery-item img{
  width:100%;
  display:block;
  transition:transform .5s ease;
}

.gallery-item:hover{
  transform:translateY(-6px);
  box-shadow:0 25px 60px rgba(0,0,0,.15);
}

.gallery-item:hover img{
  transform:scale(1.05);
}

.gallery-caption{
  padding:15px 18px;
  font-size:14px;
  color:#555;
}
/* ============================= */
/* TESTIMONIAL DESIGN */
/* ============================= */

.testimonial{
  position:relative;
  font-style:italic;
}

.testimonial::before{
  content:"“";
  font-size:60px;
  color:rgba(79,111,63,.15);
  position:absolute;
  top:-20px;
  left:20px;
}

.testimonial-author{
  margin-top:15px;
  font-weight:600;
  font-style:normal;
  color:#4f6f3f;
}