* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: #7a7a7a;
  background: #fff;
}

a { color: #2a9fd6; text-decoration: none; }
a:hover { text-decoration: underline; }
a.tel { color: inherit; text-decoration: none; }

.page {
  max-width: 1040px;
  margin: 0 auto;
  padding: 50px 16px;
}

.banner img {
  display: block;
  width: 100%;
  height: auto;
}

/* Kontakt + Einleitung */
.intro {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 40px;
  margin: 20px 0 30px;
}

.contact {
  position: relative;
  padding-left: 0;
}

.contact .phone {
  position: absolute;
  left: -58px;
  top: 0;
  width: 40px;
  height: 52px;
  color: #095879;
}

.intro p { margin: 0 0 1.4em; }
.intro p:last-child { margin-bottom: 0; }

/* Leistungen */
.services {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  color: #fff;
}

.service {
  display: grid;
  grid-template-columns: 125px 1fr;
  gap: 0 20px;
  padding: 10px 10px 30px;
}

.service img {
  width: 102px;
  height: auto;
}

.service.solar img {
  width: 130px;
  margin-top: 47px;
}

.service h2 {
  margin: 0 0 .6em;
  font-size: 20px;
  line-height: 1.3;
  color: #fff;
}

.service p { margin: 0; }

.heizung { background: #b11c1c; }
.sanitaer { background: #25538a; }
.solar { background: #ccb504; }

/* Navigation */
nav {
  display: flex;
  margin-top: 10px;
  background: #555;
}

nav a {
  flex: 1;
  padding: 12px;
  color: #fff;
  font-size: 17px;
  line-height: 1.6;
  text-align: center;
  text-decoration: none;
}

nav a:hover { background: #3573bd; }
nav a[aria-current="page"] { background: #25538a; }

/* Unterseiten */
.legal h1 {
  margin: 1em 0 .6em;
  font-size: 32px;
  line-height: 1.3;
  color: #3e4349;
}

.legal p { margin: 0 0 1.2em; }

@media (max-width: 767px) {
  .page { padding: 30px 16px; }
  .intro { grid-template-columns: 1fr; gap: 30px; }
  .contact { padding-top: 70px; }
  .contact .phone { left: 50%; transform: translateX(-50%); }
  .services { grid-template-columns: 1fr; }
}

@media (max-width: 500px) {
  nav { flex-direction: column; }
  nav a { text-align: left; }
  .service { grid-template-columns: 1fr; gap: 20px; }
  .service.solar img { margin-top: 0; }
}