/* ==========================================================================
   Geiß & Gogel SHK · Prototyp
   Aufbau: 1 Grundlagen  2 Typografie  3 Bausteine  4 Kopfbereich  5 Hero
           6 Abschnitte  7 Formular  8 Fußbereich  9 Rechtsseiten  10 Bewegung
   ========================================================================== */

/* ---------- 1 Grundlagen ---------- */
@font-face {
  font-family: "Archivo";
  src: url("../fonts/archivo-variable-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
}

:root {
  /* Farben aus dem Logo gemessen */
  --ink: #2B2E33;
  --wasser: #049FDF;
  --waerme: #FE3116;
  --klima: #4DBC70;
  /* dunklere Varianten für Text und Flächen mit weißer Schrift */
  --wasser-t: #0274A6;
  --waerme-t: #D4260A;
  --klima-t: #1E7F42;
  /* Neutrale */
  --weiss: #fff;
  --papier: #F2F4F5;
  --nebel: #E3E7EA;
  --linie: #CFD5DA;
  --grau: #5B626B;
  --ink-2: #1F2125;

  --akzent: var(--ink);
  --akzent-t: var(--ink);

  --wrap: 1280px;
  --rand: clamp(1.25rem, 5vw, 5.5rem);
  --kopf-h: 84px;
  --radius: 4px;
  --ease: cubic-bezier(.2, .7, .1, 1);
  --schatten: 0 24px 60px -28px rgba(31, 33, 37, .45);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--kopf-h) + 12px); -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: "Archivo", "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background: var(--weiss);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, p, dl, dd, figure { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
address { font-style: normal; }

:focus-visible { outline: 3px solid var(--wasser); outline-offset: 3px; border-radius: 2px; }

.wrap { width: 100%; max-width: calc(var(--wrap) + 2 * var(--rand)); margin-inline: auto; padding-inline: var(--rand); }

.skip { position: absolute; left: 1rem; top: -4rem; z-index: 200; background: var(--ink); color: #fff; padding: .75rem 1rem; border-radius: var(--radius); }
.skip:focus { top: 1rem; }

/* Farbwelten je Bereich */
.service--wasser, .kachel--wasser { --akzent: var(--wasser); --akzent-t: var(--wasser-t); }
.service--waerme, .kachel--waerme { --akzent: var(--waerme); --akzent-t: var(--waerme-t); }
.service--klima, .kachel--klima { --akzent: var(--klima); --akzent-t: var(--klima-t); }
.service--ink, .kachel--ink { --akzent: var(--ink); --akzent-t: var(--ink); }

/* ---------- 2 Typografie ---------- */
.titel {
  font-stretch: 125%;
  font-weight: 800;
  font-size: clamp(2rem, 4.6vw, 4rem);
  line-height: 1.02;
  letter-spacing: -.02em;
  text-wrap: balance;
  max-width: 18ch;
}
.titel--klein { font-size: clamp(1.625rem, 3vw, 2.5rem); max-width: 22ch; }
.gross { font-size: clamp(1.125rem, 1.5vw, 1.3125rem); line-height: 1.5; }
.klein { font-size: .8125rem; line-height: 1.5; color: var(--grau); }
p { max-width: 64ch; }
h3 { font-stretch: 112%; font-weight: 700; font-size: 1.1875rem; line-height: 1.25; }
h4 { font-weight: 700; font-size: 1.0625rem; line-height: 1.3; }

/* ---------- 3 Bausteine ---------- */
.btn {
  --btn-bg: var(--ink); --btn-fg: #fff;
  position: relative; display: inline-flex; align-items: center; gap: .75rem;
  padding: .875rem 1.375rem; border: 0; border-radius: 999px; cursor: pointer;
  background: var(--btn-bg); color: var(--btn-fg);
  font-weight: 700; font-stretch: 108%; font-size: 1rem; line-height: 1.2; text-decoration: none;
  overflow: hidden; isolation: isolate;
  transition: transform .35s var(--ease), box-shadow .35s var(--ease);
}
.btn::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: var(--ink-2);
  transform: translateY(101%); border-radius: inherit; transition: transform .45s var(--ease);
}
.btn:hover::before, .btn:focus-visible::before { transform: translateY(0); }
.btn:active { transform: scale(.98); }
.btn--primary { --btn-bg: var(--waerme-t); }
.btn--hell { --btn-bg: #fff; --btn-fg: var(--ink); }
.btn--hell::before { background: var(--nebel); }
.btn--gross { padding: 1.0625rem 1.625rem; font-size: 1.0625rem; }
.btn--riesig { padding: 1.375rem 2.25rem; font-size: clamp(1.125rem, 2vw, 1.5rem); }
.btn__icon { width: 1.25em; height: 1.25em; flex: none; transition: transform .45s var(--ease); }
.btn:hover .btn__icon { transform: translateX(5px); }

.textlink {
  display: inline-flex; align-items: center; gap: .625rem; margin-top: 2rem;
  font-weight: 700; font-stretch: 108%; text-decoration: none; color: var(--akzent-t);
  padding-bottom: .25rem; background: linear-gradient(currentColor, currentColor) 0 100% / 100% 2px no-repeat;
  transition: background-size .45s var(--ease);
}
.textlink svg { width: 1.25rem; height: 1.25rem; transition: transform .45s var(--ease); }
.textlink:hover { background-size: 0 2px; background-position: 100% 100%; }
.textlink:hover svg { transform: translateX(6px); }

.pip { display: inline-block; width: .625rem; height: .625rem; border-radius: 50%; background: var(--ink); flex: none; }
.pip--wasser { background: var(--wasser); } .pip--waerme { background: var(--waerme); } .pip--klima { background: var(--klima); }

/* Ring: greift die Kreise des Logos auf */
.ring {
  display: grid; place-items: center; width: 4rem; height: 4rem; border-radius: 50%;
  background: var(--akzent); color: #fff; border: 4px solid var(--ink); margin-bottom: 1.75rem;
}
.ring svg { width: 1.875rem; height: 1.875rem; }

.entwurf {
  display: inline-block; margin-top: 1.25rem; padding: .375rem .75rem; font-size: .8125rem; line-height: 1.4;
  border: 1.5px dashed var(--waerme-t); color: var(--waerme-t); border-radius: var(--radius); background: #FFF4F1;
}
.entwurf--dunkel { background: transparent; color: #FFB3A6; border-color: #FFB3A6; display: block; max-width: 46ch; margin-top: 2rem; }
.platzhalter { display: inline-block; padding: .125rem .5rem; border: 1.5px dashed var(--waerme-t); color: var(--waerme-t); border-radius: var(--radius); font-size: .9375rem; background: #FFF4F1; }

.bild { position: relative; overflow: hidden; border-radius: var(--radius); background: var(--nebel); }
.bild img { width: 100%; height: 100%; object-fit: cover; }

.bereich { padding-block: clamp(4.5rem, 10vw, 9rem); position: relative; }
.kopf { display: grid; gap: 1.25rem; margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.kopf__text { font-size: clamp(1.125rem, 1.5vw, 1.3125rem); color: var(--grau); }
@media (min-width: 900px) {
  .kopf { grid-template-columns: 1.3fr 1fr; align-items: end; column-gap: 4rem; }
  .kopf .entwurf { grid-column: 1 / -1; justify-self: start; margin-top: 0; }
}

/* ---------- 4 Kopfbereich ---------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100; height: var(--kopf-h);
  background: #fff;
  border-bottom: 1px solid transparent;
  transition: transform .5s var(--ease), height .4s var(--ease), border-color .3s, box-shadow .3s;
}
.site-header.ist-klein { --kopf-h: 64px; border-color: var(--nebel); box-shadow: 0 10px 30px -22px rgba(31, 33, 37, .5); }
.site-header.ist-weg { transform: translateY(-100%); }
.site-header__inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: block; height: calc(var(--kopf-h) - 18px); transition: height .4s var(--ease); flex: none; }
.brand img { height: 100%; width: auto; }

.nav { display: flex; align-items: center; gap: 2rem; }
.nav__list { display: flex; align-items: center; gap: clamp(1rem, 2vw, 2.25rem); }
.nav__list > li > a, .nav__toggle {
  position: relative; display: inline-flex; align-items: center; gap: .5rem; padding: .5rem 0;
  background: none; border: 0; cursor: pointer; text-decoration: none; font-weight: 600; font-size: 1rem;
}
.nav__list > li > a::after, .nav__toggle::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--ink);
  transform: scaleX(0); transform-origin: right; transition: transform .4s var(--ease);
}
.nav__list > li > a:hover::after, .nav__toggle:hover::after, .nav__list > li > a.ist-aktiv::after, .nav__toggle.ist-aktiv::after { transform: scaleX(1); transform-origin: left; }
.nav__toggle svg { transition: transform .35s var(--ease); }
.nav__toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

.nav__has-sub { position: relative; }
.nav__sub {
  position: absolute; top: calc(100% + .75rem); left: -1.25rem; min-width: 15rem; padding: .625rem;
  background: #fff; border-radius: 10px; box-shadow: var(--schatten); border: 1px solid var(--nebel);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: opacity .25s, transform .35s var(--ease), visibility 0s .35s;
}
.nav__has-sub.ist-offen .nav__sub { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
.nav__sub a { display: flex; align-items: center; gap: .75rem; padding: .625rem .75rem; border-radius: 6px; text-decoration: none; font-weight: 600; transition: background .2s, padding-left .35s var(--ease); }
.nav__sub a:hover, .nav__sub a:focus-visible { background: var(--papier); padding-left: 1.125rem; }

.burger { display: none; align-items: center; gap: .625rem; background: none; border: 0; padding: .5rem 0; cursor: pointer; font-weight: 700; }
.burger__box { position: relative; width: 28px; height: 14px; }
.burger__box span { position: absolute; left: 0; right: 0; height: 2.5px; background: var(--ink); border-radius: 2px; transition: transform .45s var(--ease), top .45s var(--ease); }
.burger__box span:first-child { top: 0; } .burger__box span:last-child { top: 11.5px; }
.burger[aria-expanded="true"] .burger__box span:first-child { top: 6px; transform: rotate(45deg); }
.burger[aria-expanded="true"] .burger__box span:last-child { top: 6px; transform: rotate(-45deg); }

@media (max-width: 1099px) {
  :root { --kopf-h: 68px; }
  .site-header.ist-klein { --kopf-h: 60px; }
  .burger { display: inline-flex; z-index: 2; }
  .nav {
    position: fixed; inset: 0; top: 0; height: 100dvh; padding: calc(var(--kopf-h) + 1.5rem) var(--rand) 2rem;
    background: #fff; flex-direction: column; align-items: stretch; justify-content: space-between; gap: 2rem;
    overflow-y: auto; visibility: hidden; clip-path: inset(0 0 100% 0);
    transition: clip-path .6s var(--ease), visibility 0s .6s;
  }
  .nav.ist-offen { visibility: visible; clip-path: inset(0); transition-delay: 0s; }
  .site-header:has(.nav.ist-offen) { transform: none; }
  .brand { position: relative; z-index: 2; }
  .nav__list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav__list > li { border-bottom: 1px solid var(--nebel); }
  .nav__list > li > a, .nav__toggle { width: 100%; justify-content: space-between; padding: 1.125rem 0; font-size: 1.5rem; font-stretch: 118%; font-weight: 800; letter-spacing: -.01em; }
  .nav__list > li > a::after, .nav__toggle::after { display: none; }
  .nav__sub { position: static; opacity: 1; visibility: visible; transform: none; box-shadow: none; border: 0; padding: 0; min-width: 0; max-height: 0; overflow: hidden; transition: max-height .5s var(--ease); }
  .nav__has-sub.ist-offen .nav__sub { max-height: 24rem; padding-bottom: 1rem; }
  .nav__sub a { font-size: 1.125rem; padding: .625rem 0; }
  .nav__cta { justify-content: center; padding: 1.125rem; font-size: 1.125rem; }
  body.menue-offen { overflow: hidden; }
}

/* Strang: Fortschrittsleiste am linken Rand, erinnert an eine Steigleitung */
.strang { display: none; }
@media (min-width: 1280px) {
  .strang { display: block; position: fixed; left: 26px; top: 50%; z-index: 90; height: min(56vh, 480px); width: 14px; transform: translateY(-50%); }
  .strang__linie { position: absolute; left: 6px; top: 0; bottom: 0; width: 2px; background: var(--linie); border-radius: 2px; overflow: hidden; }
  .strang__fuellung { position: absolute; inset: 0; background: var(--strang-farbe, var(--ink)); transform-origin: top; transform: scaleY(0); transition: background .5s; }
  .strang__knoten { position: absolute; left: 0; width: 14px; height: 14px; margin-top: -7px; border-radius: 50%; background: #fff; border: 2px solid var(--linie); padding: 0; cursor: pointer; transition: border-color .3s, background .3s, transform .3s var(--ease); }
  .strang__knoten:hover, .strang__knoten:focus-visible { transform: scale(1.35); border-color: var(--ink); }
  .strang__knoten.ist-durch { border-color: var(--strang-farbe, var(--ink)); background: var(--strang-farbe, var(--ink)); }
  .strang__knoten span { position: absolute; left: 24px; top: 50%; transform: translate(-6px, -50%); white-space: nowrap; font-size: .8125rem; font-weight: 700; background: var(--ink); color: #fff; padding: .25rem .625rem; border-radius: 999px; opacity: 0; pointer-events: none; transition: opacity .25s, transform .35s var(--ease); }
  .strang__knoten:hover span, .strang__knoten:focus-visible span { opacity: 1; transform: translate(0, -50%); }
  .strang.auf-dunkel .strang__linie { background: rgba(255, 255, 255, .25); }
}

/* ---------- 5 Hero ---------- */
.hero { position: relative; min-height: max(100svh, 640px); padding-top: var(--kopf-h); display: flex; align-items: flex-end; color: #fff; background: var(--ink-2); overflow: hidden; isolation: isolate; }
.hero__media { position: absolute; inset: var(--kopf-h) 0 0 0; z-index: -2; overflow: hidden; }
.hero__media img { width: 100%; height: 112%; object-fit: cover; object-position: 62% 50%; }
.hero__shade { position: absolute; inset: 0; z-index: -1; background:
  linear-gradient(90deg, rgba(24, 26, 30, .86) 0%, rgba(24, 26, 30, .62) 38%, rgba(24, 26, 30, .12) 72%, rgba(24, 26, 30, 0) 100%),
  linear-gradient(0deg, rgba(24, 26, 30, .7) 0%, rgba(24, 26, 30, 0) 42%); }
.hero__inner { padding-block: clamp(2.5rem, 6vh, 4.5rem) clamp(2.5rem, 6vh, 4.5rem); }
.hero__title { font-stretch: 125%; font-weight: 800; font-size: clamp(3.25rem, 10.5vw, 9.5rem); line-height: .9; letter-spacing: -.035em; }
.hero__title .line { display: block; overflow: hidden; padding-bottom: .06em; }
.hero__title .line > span { display: inline-block; }
.hero__title .line--klein { font-size: clamp(1.25rem, 2.6vw, 2.25rem); font-stretch: 112%; font-weight: 600; letter-spacing: -.01em; line-height: 1.2; margin-top: 1.125rem; }
.dot { font-style: normal; }
.dot--wasser { color: var(--wasser); } .dot--waerme { color: var(--waerme); } .dot--klima { color: var(--klima); }
.hero__foot { display: grid; gap: 1.75rem; margin-top: clamp(1.75rem, 4vh, 3rem); max-width: 60rem; }
.hero__lead { font-size: clamp(1.0625rem, 1.4vw, 1.25rem); line-height: 1.5; max-width: 46ch; color: rgba(255, 255, 255, .92); }
.hero__actions { display: flex; flex-wrap: wrap; gap: .875rem; }
@media (min-width: 900px) { .hero__foot { grid-template-columns: minmax(0, 46ch) auto; align-items: end; column-gap: 3rem; } }

.hero__trio { position: absolute; right: var(--rand); top: calc(var(--kopf-h) + clamp(1.5rem, 5vh, 3.5rem)); display: flex; gap: .875rem; }
.trio { display: flex; flex-direction: column; align-items: center; gap: .5rem; text-decoration: none; color: #fff; font-size: .8125rem; font-weight: 700; }
.trio__ring { display: grid; place-items: center; width: clamp(3rem, 5vw, 4.25rem); aspect-ratio: 1; border-radius: 50%; border: 3px solid #fff; background: var(--c); transition: transform .5s var(--ease), box-shadow .5s var(--ease); }
.trio__ring svg { width: clamp(1.25rem, 2.2vw, 1.875rem); height: clamp(1.25rem, 2.2vw, 1.875rem); }
.trio--wasser { --c: var(--wasser); } .trio--waerme { --c: var(--waerme); } .trio--klima { --c: var(--klima); }
.trio:hover .trio__ring, .trio:focus-visible .trio__ring { transform: translateY(-6px) scale(1.06); box-shadow: 0 18px 30px -12px rgba(0, 0, 0, .6); }
.trio__text { text-shadow: 0 1px 8px rgba(0, 0, 0, .6); }
@media (max-width: 699px) {
  .hero__trio { gap: .625rem; top: calc(var(--kopf-h) + 1rem); }
  .trio__text { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
  .hero__shade { background: linear-gradient(0deg, rgba(24, 26, 30, .94) 0%, rgba(24, 26, 30, .78) 45%, rgba(24, 26, 30, .15) 80%, rgba(24, 26, 30, .1) 100%); }
  .hero__actions .btn { flex: 1 1 100%; justify-content: center; }
}

/* ---------- 6 Abschnitte ---------- */
/* Fakten */
.fakten { background: var(--ink); color: #fff; padding-block: clamp(2.5rem, 5vw, 4rem); }
.fakten__liste { display: grid; gap: 2rem; }
.fakten__liste li { padding-top: 1.25rem; border-top: 2px solid rgba(255, 255, 255, .22); position: relative; }
.fakten__liste li::before { content: ""; position: absolute; top: -2px; left: 0; width: 3rem; height: 2px; background: var(--f, #fff); }
.fakten__liste li:nth-child(1) { --f: var(--wasser); } .fakten__liste li:nth-child(2) { --f: var(--waerme); }
.fakten__liste li:nth-child(3) { --f: var(--klima); } .fakten__liste li:nth-child(4) { --f: #fff; }
.fakten__titel { font-stretch: 118%; font-weight: 800; font-size: 1.25rem; line-height: 1.2; margin-bottom: .625rem; letter-spacing: -.01em; }
.fakten p { color: rgba(255, 255, 255, .78); font-size: 1rem; }
@media (min-width: 640px) { .fakten__liste { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .fakten__liste { grid-template-columns: repeat(4, 1fr); gap: 2.5rem; } }

/* Kacheln */
.leistungen { background: var(--papier); }
.kacheln { display: grid; gap: 1rem; perspective: 1400px; }
.kachel { position: relative; display: block; min-height: 22rem; border-radius: var(--radius); overflow: hidden; color: #fff; text-decoration: none; background: var(--ink); isolation: isolate; transform-style: preserve-3d; will-change: transform; transition: box-shadow .5s var(--ease); }
.kachel img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; z-index: -3; transition: transform 1.2s var(--ease); }
.kachel::after { content: ""; position: absolute; inset: 0; z-index: -2; background: linear-gradient(0deg, rgba(24, 26, 30, .9) 0%, rgba(24, 26, 30, .35) 55%, rgba(24, 26, 30, .1) 100%); }
.kachel__farbe { position: absolute; inset: 0; z-index: -1; background: var(--akzent-t); clip-path: circle(0 at 3.5rem 3.5rem); transition: clip-path .8s var(--ease); opacity: .92; }
.kachel--ink .kachel__farbe { background: var(--ink-2); }
.kachel__ring { position: absolute; left: 1.5rem; top: 1.5rem; display: grid; place-items: center; width: 4rem; height: 4rem; border-radius: 50%; background: var(--akzent); border: 3px solid #fff; transition: transform .6s var(--ease); }
.kachel__ring svg { width: 1.75rem; height: 1.75rem; }
.kachel__text { position: absolute; inset: auto 0 0 0; padding: 1.5rem; display: grid; gap: .5rem; transform: translateZ(30px); }
.kachel__titel { font-stretch: 125%; font-weight: 800; font-size: clamp(1.625rem, 2.6vw, 2.375rem); line-height: 1; letter-spacing: -.02em; }
.kachel__info { max-width: 34ch; color: rgba(255, 255, 255, .9); }
.kachel__link { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; margin-top: .5rem; }
.kachel__link svg { width: 1.25rem; height: 1.25rem; transition: transform .45s var(--ease); }
.kachel:hover, .kachel:focus-visible { box-shadow: var(--schatten); }
.kachel:hover img, .kachel:focus-visible img { transform: scale(1.08); }
.kachel:hover .kachel__farbe, .kachel:focus-visible .kachel__farbe { clip-path: circle(150% at 3.5rem 3.5rem); }
.kachel:hover .kachel__ring, .kachel:focus-visible .kachel__ring { transform: scale(1.1) rotate(-8deg); }
.kachel:hover .kachel__link svg, .kachel:focus-visible .kachel__link svg { transform: translateX(6px); }
@media (min-width: 900px) {
  .kacheln { grid-template-columns: repeat(6, 1fr); gap: 1.25rem; }
  .kachel { grid-column: span 2; min-height: 26rem; }
  .kachel--gross { grid-column: span 3; min-height: 30rem; }
}

/* Über uns */
.ueber__raster { display: grid; gap: clamp(2.5rem, 5vw, 5rem); }
.ueber__text { display: grid; gap: 1.25rem; align-content: start; }
.ueber__text .titel { margin-bottom: .75rem; }
.ueber__bild { position: relative; }
.ueber__bild .bild { aspect-ratio: 4 / 5; }
.ueber__bild .bild img { height: 116%; }
.ueber__logo { position: absolute; left: -1rem; bottom: -2rem; width: clamp(9rem, 16vw, 13rem); padding: 1rem; background: #fff; border-radius: var(--radius); box-shadow: var(--schatten); }
.grundsaetze { display: grid; gap: 2rem; padding-top: 1rem; }
.grundsaetze li { padding-top: 1.25rem; border-top: 2px solid var(--ink); }
.grundsaetze h3 { margin-bottom: .625rem; }
.grundsaetze p { color: var(--grau); }
@media (min-width: 900px) {
  .ueber__raster { grid-template-columns: 1.1fr .9fr; align-items: start; }
  .grundsaetze { grid-column: 1 / -1; grid-template-columns: repeat(3, 1fr); gap: 2.5rem; padding-top: 3rem; }
  .ueber__bild .bild { aspect-ratio: 4 / 4.6; }
}

/* Leistungsbereiche */
.service { border-top: 1px solid var(--nebel); }
.service__raster { display: grid; gap: clamp(2rem, 5vw, 5rem); }
.service__bild { aspect-ratio: 4 / 3; }
.service__bild img { height: 116%; }
.service__bild::after { content: ""; position: absolute; left: 0; bottom: 0; width: 100%; height: 6px; background: var(--akzent); }
.service__text .titel { margin-bottom: 1.5rem; }
.service__text .gross { margin-bottom: 2.25rem; }
.themen { display: grid; gap: 0; border-top: 1px solid var(--linie); }
.themen > div { display: grid; gap: .25rem; padding: 1rem 0; border-bottom: 1px solid var(--linie); position: relative; transition: padding-left .45s var(--ease); }
.themen > div::before { content: ""; position: absolute; left: 0; top: 1.5rem; width: .5rem; height: .5rem; border-radius: 50%; background: var(--akzent); transform: scale(0); transition: transform .35s var(--ease); }
.themen > div:hover { padding-left: 1.25rem; }
.themen > div:hover::before { transform: scale(1); }
.themen dt { font-weight: 700; font-stretch: 110%; }
.themen dd { color: var(--grau); }
@media (min-width: 900px) {
  .service__raster { grid-template-columns: .9fr 1.1fr; align-items: start; }
  .service__bild { aspect-ratio: 4 / 5; position: sticky; top: calc(var(--kopf-h) + 2rem); }
  .service--gespiegelt .service__bild { order: 2; }
  .service--gespiegelt .service__raster { grid-template-columns: 1.1fr .9fr; }
  .themen > div { grid-template-columns: 15rem 1fr; column-gap: 1.5rem; align-items: baseline; }
}

/* Wärmepumpe: Förderung und Weg */
.pumpe { background: var(--papier); }
.foerder { display: grid; gap: 2.5rem; margin-top: clamp(4rem, 8vw, 7rem); }
.foerder__text { display: grid; gap: 1.25rem; align-content: start; }
.rechner { display: grid; gap: 1rem; margin-top: .75rem; }
.foerder__ergebnis { background: var(--ink); color: #fff; border-radius: var(--radius); padding: clamp(1.5rem, 3vw, 2.75rem); }
.foerder__zahl { font-stretch: 125%; font-weight: 800; font-size: clamp(4rem, 9vw, 7.5rem); line-height: .9; letter-spacing: -.04em; font-variant-numeric: tabular-nums; }
.foerder__unter { color: rgba(255, 255, 255, .75); margin-top: .5rem; }
.balken { position: relative; display: flex; height: 2.25rem; margin: 2rem 0 1.25rem; background: rgba(255, 255, 255, .12); border-radius: 3px; }
.balken__teil { height: 100%; width: 0; transition: width .9s var(--ease); }
.balken__teil:first-child { border-radius: 3px 0 0 3px; }
.balken__teil--grund { background: var(--wasser); } .balken__teil--klima { background: var(--waerme); } .balken__teil--einkommen { background: var(--klima); }
.balken__marke { position: absolute; top: -.625rem; bottom: -.625rem; left: 70%; border-left: 2px dashed #fff; transition: left .9s var(--ease); }
.balken__marke span { position: absolute; top: -1.375rem; left: 0; transform: translateX(-50%); white-space: nowrap; font-size: .75rem; }
.legende { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; font-size: .9375rem; }
.legende li { display: flex; align-items: center; gap: .5rem; }
.foerder__betrag { margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid rgba(255, 255, 255, .2); font-size: 1.125rem; }
.foerder__betrag b { font-stretch: 118%; font-size: 1.375rem; white-space: nowrap; }
.foerder__ergebnis .klein { color: rgba(255, 255, 255, .62); margin-top: 1rem; }
@media (min-width: 900px) { .foerder { grid-template-columns: 1fr 1.1fr; column-gap: clamp(2rem, 5vw, 5rem); align-items: start; } }

.schalter { display: grid; grid-template-columns: auto 1fr; gap: .875rem; align-items: start; cursor: pointer; line-height: 1.45; }
.schalter input { position: absolute; opacity: 0; width: 1.5rem; height: 1.5rem; margin: 0; }
.schalter__box { width: 1.5rem; height: 1.5rem; border: 2px solid var(--ink); border-radius: 4px; background: #fff; display: grid; place-items: center; transition: background .25s, border-color .25s; margin-top: .0625rem; }
.schalter__box::after { content: ""; width: .625rem; height: .3125rem; border-left: 2.5px solid #fff; border-bottom: 2.5px solid #fff; transform: rotate(-45deg) scale(0); margin-top: -.125rem; transition: transform .3s var(--ease); }
.schalter input:checked + .schalter__box { background: var(--ink); }
.schalter input:checked + .schalter__box::after { transform: rotate(-45deg) scale(1); }
.schalter input:focus-visible + .schalter__box { outline: 3px solid var(--wasser); outline-offset: 3px; }
.schalter input:disabled ~ span { opacity: .45; }

.weg { margin-top: clamp(4rem, 8vw, 7rem); }
.weg__kopf { display: grid; gap: 1rem; margin-bottom: 2.25rem; }
.weg__schluessel { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .625rem; font-size: .9375rem; color: var(--grau); }
.weg__schluessel .wer--sie { margin-left: 1rem; }
.wer { display: inline-grid; place-items: center; min-width: 2.5rem; height: 1.75rem; padding: 0 .625rem; border-radius: 999px; font-size: .8125rem; font-weight: 800; font-stretch: 110%; }
.wer--wir { background: var(--ink); color: #fff; }
.wer--sie { background: #fff; color: var(--ink); border: 2px solid var(--ink); }
.tabs { background: #fff; border-radius: var(--radius); border: 1px solid var(--nebel); margin-bottom: 2.5rem; }
.tabs__liste { display: flex; overflow-x: auto; border-bottom: 1px solid var(--nebel); scrollbar-width: none; }
.tabs__liste::-webkit-scrollbar { display: none; }
.tabs__liste button { flex: 1 0 auto; display: flex; align-items: center; gap: .75rem; padding: 1.125rem 1.25rem; background: none; border: 0; border-bottom: 3px solid transparent; margin-bottom: -1px; cursor: pointer; font-weight: 700; font-stretch: 108%; color: var(--grau); text-align: left; white-space: nowrap; transition: color .25s, border-color .25s; }
.tabs__liste button:hover { color: var(--ink); }
.tabs__liste button[aria-selected="true"] { color: var(--ink); border-color: var(--waerme); }
.tabs__nr { display: grid; place-items: center; width: 1.75rem; height: 1.75rem; border-radius: 50%; background: var(--nebel); font-size: .875rem; transition: background .25s, color .25s; }
.tabs__liste button[aria-selected="true"] .tabs__nr { background: var(--waerme-t); color: #fff; }
.tabs__panel { padding: clamp(1.25rem, 3vw, 2.5rem); }
.schritte { display: grid; gap: 1.5rem; }
.schritte li { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; align-items: start; }
.schritte p { color: var(--grau); margin-top: .25rem; }
@media (min-width: 900px) { .schritte { grid-template-columns: 1fr 1fr; gap: 2rem 3.5rem; } }

html.js .tabs__ohne-js { display: none; }
html:not(.js) .tabs__liste, html:not(.js) .rechner { display: none; }
.tabs__ohne-js { margin-bottom: 1.25rem; font-size: 1.1875rem; }
html:not(.js) .tabs__panel + .tabs__panel { border-top: 1px solid var(--nebel); }

.downloads { margin-bottom: 2.5rem; }
.downloads .titel { margin-bottom: 1.5rem; }
.downloads__liste { display: grid; gap: 1rem; }
.download { display: grid; grid-template-columns: auto 1fr auto; gap: 1.25rem; align-items: center; padding: 1.25rem 1.5rem; background: #fff; border: 1px solid var(--nebel); border-radius: var(--radius); text-decoration: none; transition: border-color .3s, box-shadow .45s var(--ease), transform .45s var(--ease); }
.download__icon { display: grid; place-items: center; width: 3.25rem; height: 4rem; border-radius: 3px; background: var(--waerme-t); color: #fff; font-weight: 800; font-stretch: 110%; font-size: .8125rem; }
.download__text { display: grid; gap: .25rem; }
.download__text strong { font-stretch: 110%; font-size: 1.0625rem; line-height: 1.3; }
.download__text span { color: var(--grau); font-size: .9375rem; line-height: 1.45; }
.download__pfeil { width: 1.75rem; height: 1.75rem; transition: transform .45s var(--ease); }
.download:hover, .download:focus-visible { border-color: var(--ink); box-shadow: var(--schatten); transform: translateY(-3px); }
.download:hover .download__pfeil { transform: translateY(4px); }
@media (min-width: 900px) { .downloads__liste { grid-template-columns: 1fr 1fr; gap: 1.25rem; } }

/* Ablauf */
.ablauf { background: #fff; border-top: 1px solid var(--nebel); }
.ablauf .wrap { position: relative; }
.ablauf__liste { display: grid; gap: 2.5rem; position: relative; z-index: 1; }
.ablauf__schritt { position: relative; padding-left: 4.5rem; }
.ablauf__nr { position: absolute; left: 0; top: -.25rem; display: grid; place-items: center; width: 3.25rem; height: 3.25rem; border-radius: 50%; background: #fff; border: 3px solid var(--linie); font-stretch: 125%; font-weight: 800; font-size: 1.25rem; transition: border-color .5s, background .5s, color .5s, transform .5s var(--ease); }
.ablauf__schritt.ist-aktiv .ablauf__nr { border-color: var(--ink); background: var(--ink); color: #fff; transform: scale(1.08); }
.ablauf__schritt h3 { margin-bottom: .5rem; font-size: 1.3125rem; }
.ablauf__schritt p { color: var(--grau); }
.ablauf__rohr { position: absolute; left: calc(var(--rand) + 1.625rem - 1.5px); top: auto; bottom: 1rem; width: 3px; background: var(--nebel); }
.ablauf__rohr span { position: absolute; inset: 0; background: linear-gradient(180deg, var(--wasser), var(--waerme), var(--klima)); transform: scaleY(0); transform-origin: top; }
@media (min-width: 900px) {
  .ablauf__liste { grid-template-columns: repeat(4, 1fr); gap: 2.5rem; }
  .ablauf__schritt { padding-left: 0; padding-top: 5rem; }
  .ablauf__nr { top: 0; }
  .ablauf__rohr { left: var(--rand); right: var(--rand); bottom: auto; width: auto; height: 3px; }
  .ablauf__rohr span { background: linear-gradient(90deg, var(--wasser), var(--waerme), var(--klima)); transform: scaleX(0); transform-origin: left; }
}

/* Einsatzgebiet */
.gebiet { background: var(--ink-2); color: #fff; overflow: hidden; }
.gebiet__raster { display: grid; gap: 3rem; align-items: center; }
.gebiet__text { display: grid; gap: 1.25rem; justify-items: start; }
.gebiet__text p:not(.entwurf) { color: rgba(255, 255, 255, .82); }
.gebiet .btn { margin-top: .75rem; }
.gebiet__adresse { display: grid; grid-template-columns: auto 1fr; gap: 1rem; align-items: start; margin-top: .5rem; padding: 1.25rem 1.5rem; border: 1px solid rgba(255, 255, 255, .22); border-radius: var(--radius); line-height: 1.5; font-weight: 600; }
.gebiet__punkt { width: .875rem; height: .875rem; margin-top: .375rem; border-radius: 50%; background: var(--waerme); box-shadow: 0 0 0 4px rgba(254, 49, 22, .3); }
.karte { max-width: 34rem; width: 100%; margin-inline: auto; }
.karte svg { width: 100%; height: auto; overflow: visible; }
.karte text { font-family: inherit; font-size: 15px; font-weight: 600; fill: #fff; }
.karte__flussname { font-size: 12px !important; fill: #7CCDF2 !important; letter-spacing: .08em; }
.ort circle { fill: var(--ink-2); stroke: #fff; stroke-width: 2; }
.ort--fern { opacity: .7; }
.standort__punkt { fill: var(--waerme); }
.standort__ring { fill: none; stroke: var(--waerme); stroke-width: 2; }
.standort__puls { fill: var(--waerme); opacity: .0; }
.standort text { font-size: 18px; font-weight: 800; font-stretch: 118%; }
@media (min-width: 900px) { .gebiet__raster { grid-template-columns: 1fr 1fr; gap: 5rem; } }

/* Abschluss */
.abschluss { position: relative; padding-block: clamp(5rem, 12vw, 10rem); background: #fff; overflow: hidden; isolation: isolate; }
.abschluss__inner { display: grid; gap: 2.5rem; justify-items: start; }
.abschluss__titel { font-stretch: 125%; font-weight: 800; font-size: clamp(2.25rem, 5.6vw, 5.25rem); line-height: .98; letter-spacing: -.03em; max-width: 13ch; text-wrap: balance; }
.abschluss__ringe { position: absolute; right: -6vw; top: 50%; z-index: -1; display: flex; transform: translateY(-50%); }
.abschluss__ringe span { width: clamp(8rem, 17vw, 15.5rem); aspect-ratio: 1; border-radius: 50%; border: clamp(8px, 1.2vw, 16px) solid var(--c); margin-left: -4vw; opacity: .9; }
.abschluss__ringe span:nth-child(1) { --c: var(--wasser); } .abschluss__ringe span:nth-child(2) { --c: var(--waerme); } .abschluss__ringe span:nth-child(3) { --c: var(--klima); }
@media (max-width: 899px) { .abschluss__ringe { opacity: .22; right: -20vw; } }

/* ---------- 7 Formular ---------- */
.kontakt { background: var(--papier); }
.kontakt__raster { display: grid; gap: 3rem; }
.kontakt__text { display: grid; gap: 1.5rem; align-content: start; }
.adresse { display: grid; gap: 1.5rem; margin-top: 1rem; padding-top: 2rem; border-top: 2px solid var(--ink); }
.adresse h3 { font-size: .9375rem; color: var(--grau); font-weight: 600; font-stretch: 100%; margin-bottom: .25rem; }
.adresse p + h3 { margin-top: 1.25rem; }
.adresse a { font-weight: 700; text-underline-offset: .2em; }
@media (min-width: 560px) { .adresse { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .kontakt__raster { grid-template-columns: .85fr 1.15fr; gap: 5rem; } }

.formular { display: grid; gap: 1.25rem; background: #fff; padding: clamp(1.5rem, 3.5vw, 3rem); border-radius: var(--radius); box-shadow: var(--schatten); }
.formular__reihe { display: grid; gap: 1.25rem; }
@media (min-width: 640px) { .formular__reihe { grid-template-columns: 1fr 1fr; } }
.feld { display: grid; gap: .375rem; }
.feld label:not(.schalter) { font-weight: 700; font-size: .9375rem; }
.optional { font-weight: 400; color: var(--grau); margin-left: .375rem; }
.feld input:not([type="checkbox"]), .feld select, .feld textarea {
  width: 100%; padding: .875rem 1rem; border: 1.5px solid var(--linie); border-radius: var(--radius); background: var(--papier);
  transition: border-color .25s, background .25s, box-shadow .25s;
}
.feld select { appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5l5 5 5-5' fill='none' stroke='%232B2E33' stroke-width='1.8' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 1rem center; background-size: 12px; padding-right: 2.5rem; }
.feld textarea { resize: vertical; min-height: 8rem; }
.feld input:hover, .feld select:hover, .feld textarea:hover { border-color: var(--grau); }
.feld input:not([type="checkbox"]):focus, .feld select:focus, .feld textarea:focus { outline: none; border-color: var(--ink); background: #fff; box-shadow: 0 0 0 3px rgba(4, 159, 223, .35); }
.feld.hat-fehler input:not([type="checkbox"]), .feld.hat-fehler select, .feld.hat-fehler textarea, .feld.hat-fehler .schalter__box { border-color: var(--waerme-t); background: #FFF4F1; }
.feld__fehler { color: var(--waerme-t); font-size: .875rem; font-weight: 600; }
.feld--schmal { max-width: 24rem; margin-top: .5rem; }
.feld--schmal select { background-color: #fff; }
.formular .btn { justify-self: start; margin-top: .5rem; }
.formular__meldung { padding: 1rem 1.25rem; border-radius: var(--radius); border-left: 5px solid var(--wasser); background: #EAF6FC; font-size: 1rem; }
.formular__meldung.ist-fehler { border-color: var(--waerme-t); background: #FFF4F1; }
.formular__meldung strong { display: block; margin-bottom: .25rem; }

/* ---------- 8 Fußbereich ---------- */
.fuss { background: var(--ink); color: rgba(255, 255, 255, .8); padding-top: clamp(3.5rem, 7vw, 6rem); font-size: 1rem; }
.fuss__raster { display: grid; gap: 2.5rem; }
.fuss__logo { display: inline-block; background: #fff; padding: .875rem; border-radius: var(--radius); width: 9.5rem; margin-bottom: 1.25rem; }
.fuss__marke p + p { margin-top: .5rem; }
.fuss h2 { font-size: .9375rem; font-weight: 600; color: rgba(255, 255, 255, .55); margin-bottom: 1rem; }
.fuss li + li { margin-top: .5rem; }
.fuss a { text-decoration: none; color: #fff; background: linear-gradient(currentColor, currentColor) 0 100% / 0 1.5px no-repeat; transition: background-size .4s var(--ease); padding-bottom: 2px; }
.fuss a:hover, .fuss a:focus-visible { background-size: 100% 1.5px; }
.fuss__unten { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 2rem; margin-top: clamp(2.5rem, 5vw, 4.5rem); padding-block: 1.5rem; border-top: 1px solid rgba(255, 255, 255, .16); font-size: .875rem; color: rgba(255, 255, 255, .6); }
@media (min-width: 640px) { .fuss__raster { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .fuss__raster { grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 3rem; } }

/* ---------- 9 Rechtsseiten ---------- */
.seite-recht .site-header { position: sticky; }
.recht { padding-block: clamp(3rem, 7vw, 6rem); }
.recht .wrap { max-width: calc(52rem + 2 * var(--rand)); }
.recht h1 { font-stretch: 125%; font-weight: 800; font-size: clamp(2.25rem, 6vw, 4rem); line-height: 1; letter-spacing: -.025em; margin-bottom: 1.5rem; }
.recht h2 { font-stretch: 115%; font-weight: 800; font-size: 1.5rem; line-height: 1.2; margin: 2.75rem 0 .75rem; }
.recht p, .recht ul { margin-bottom: 1rem; max-width: 68ch; }
.recht ul { list-style: disc; padding-left: 1.25rem; }
.recht .entwurf { display: block; margin: 0 0 2rem; padding: 1rem 1.25rem; font-size: 1rem; }
.zurueck { display: inline-flex; align-items: center; gap: .5rem; font-weight: 700; text-decoration: none; }
.zurueck svg { width: 1.25rem; height: 1.25rem; transform: rotate(180deg); transition: transform .4s var(--ease); }
.zurueck:hover svg { transform: rotate(180deg) translateX(5px); }

/* ---------- 10 Bewegung ---------- */
/* Weicher Seitenwechsel zwischen den HTML-Seiten */
@view-transition { navigation: auto; }
::view-transition-old(root) { animation: seite-raus .3s ease both; }
::view-transition-new(root) { animation: seite-rein .45s ease both; }
@keyframes seite-raus { to { opacity: 0; transform: translateY(-12px); } }
@keyframes seite-rein { from { opacity: 0; transform: translateY(16px); } }

/* Ausgangszustände nur, wenn JavaScript aktiv ist und Bewegung erlaubt wurde */
.anim [data-reveal] { opacity: 0; transform: translateY(28px); }
.anim .reveal-img { clip-path: inset(0 0 100% 0); }
.anim .reveal-img img { transform: scale(1.25); }
.anim [data-split] { clip-path: inset(0 0 100% 0); transform: translateY(.35em); }
.anim .hero__title .line > span { transform: translateY(112%); }
.anim .hero__lead, .anim .hero__actions, .anim .hero__trio li { opacity: 0; }
.anim .hero__media img { transform: scale(1.18); }
.anim .ort, .anim .standort { opacity: 0; }

@keyframes puls { 0% { transform: scale(1); opacity: .5; } 100% { transform: scale(3.4); opacity: 0; } }
.anim .standort.ist-da .standort__puls { transform-box: fill-box; transform-origin: center; animation: puls 2.6s ease-out 3; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  ::view-transition-old(root), ::view-transition-new(root) { animation: none; }
}

@media print {
  .site-header, .strang, .hero__trio, .burger { display: none !important; }
  .hero { min-height: 0; color: #000; background: none; }
}