:root {
  /* Farben aus dem Instagram-Logo @solarhilft */
  --sonne: #f2931a;
  --sonne-hell: #fdefd6;
  --tief: #0e4a2f;
  --tief-2: #127045;
  --text: #1f2a24;
  --leise: #5a665e;
  --flaeche: #ffffff;
  --grund: #fef8ec;
  --linie: #ece2cf;
  --radius: 14px;
  --breite: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--grund);
  color: var(--text);
  font: 17px/1.65 "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--tief-2); }
h1, h2, h3 { color: var(--tief); line-height: 1.2; margin: 0 0 .6em; }
h1 { font-size: clamp(2.1rem, 5vw, 3.4rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.6rem, 3.4vw, 2.3rem); letter-spacing: -.01em; }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1em; }

.rahmen { width: min(var(--breite), 100% - 32px); margin-inline: auto; }
section { padding: clamp(56px, 8vw, 96px) 0; }
.abschnitt-weiss { background: var(--flaeche); }
.dachzeile {
  display: inline-block; font-size: .8rem; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--sonne); margin-bottom: .8em;
}
.einleitung { font-size: 1.15rem; color: var(--leise); max-width: 46em; }

/* Kopf */
.kopf {
  position: sticky; top: 0; z-index: 10; background: rgba(254, 248, 236, .95);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--linie);
}
.kopf .rahmen { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
.marke { display: flex; align-items: center; }
.marke img { height: 56px; width: auto; }
.navi { display: flex; gap: 22px; }
.navi a { color: var(--text); text-decoration: none; font-weight: 600; font-size: .95rem; }
.navi a:hover { color: var(--tief-2); }
@media (max-width: 760px) { .navi { display: none; } }

.knopf {
  display: inline-block; padding: 13px 24px; border-radius: 999px; font-weight: 700;
  text-decoration: none; background: var(--sonne); color: #2a1a00; border: 2px solid var(--sonne);
}
.knopf:hover { background: #dc8210; border-color: #dc8210; }
.knopf.leer { background: transparent; color: var(--tief); border-color: var(--tief); }
.knopf.leer:hover { background: var(--tief); color: #fff; }

/* Bühne */
.buehne { padding-top: clamp(40px, 6vw, 72px); }
.buehne .rahmen.oben { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.buehne p { font-size: 1.2rem; color: var(--leise); max-width: 34em; }
.knoepfe { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 1.6em; }
.buehnenbild { position: relative; }
.buehnenbild img { border-radius: 22px; aspect-ratio: 4 / 5; object-fit: cover; width: 100%; box-shadow: 0 24px 60px -24px rgba(14, 74, 47, .45); }
.buehnenbild figcaption {
  position: absolute; left: 16px; bottom: 16px; right: 16px; background: rgba(255, 255, 255, .93);
  border-radius: 12px; padding: 10px 14px; font-size: .9rem; color: var(--text);
}
@media (max-width: 860px) { .buehne .rahmen.oben { grid-template-columns: 1fr; } .buehnenbild { max-width: 440px; } }

/* Kennzahlen */
.zahlen { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 56px; }
.zahl { background: var(--flaeche); border: 1px solid var(--linie); border-radius: var(--radius); padding: 20px; }
.zahl strong { display: block; font-size: 1.9rem; color: var(--tief); line-height: 1.1; }
.zahl span { color: var(--leise); font-size: .92rem; }
@media (max-width: 760px) { .zahlen { grid-template-columns: repeat(2, 1fr); } .zahl strong { font-size: 1.45rem; } }

/* Zwei Spalten */
.zweispaltig { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .zweispaltig { grid-template-columns: 1fr; } }

.leitsaetze { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.leitsatz { background: var(--grund); border-radius: var(--radius); padding: 22px; border-left: 4px solid var(--sonne); }
.leitsatz p { margin: 0; color: var(--leise); font-size: .97rem; }
@media (max-width: 560px) { .leitsaetze { grid-template-columns: 1fr; } }

/* Zeitleiste */
.zeitleiste { list-style: none; margin: 0; padding: 0; border-left: 3px solid var(--linie); }
.zeitleiste li { position: relative; padding: 0 0 26px 26px; }
.zeitleiste li::before {
  content: ""; position: absolute; left: -9px; top: 5px; width: 15px; height: 15px;
  border-radius: 50%; background: var(--flaeche); border: 3px solid var(--sonne);
}
.zeitleiste li.fertig::before { background: var(--sonne); }
.zeitleiste time { font-weight: 700; color: var(--tief); display: block; }
.zeitleiste p { margin: 0; color: var(--leise); }

.galerie { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-top: 40px; }
.galerie figure { margin: 0; }
.galerie img { border-radius: 12px; aspect-ratio: 3 / 4; object-fit: cover; width: 100%; }
.galerie figcaption { font-size: .85rem; color: var(--leise); margin-top: 6px; }
@media (max-width: 760px) { .galerie { grid-template-columns: repeat(2, 1fr); } }

/* Technik */
.technik { list-style: none; margin: 0; padding: 0; background: var(--flaeche); border: 1px solid var(--linie); border-radius: var(--radius); }
.technik li { padding: 14px 18px 14px 44px; border-bottom: 1px solid var(--linie); position: relative; color: var(--leise); }
.technik li:last-child { border-bottom: 0; }
.technik li::before { content: ""; position: absolute; left: 18px; top: 22px; width: 10px; height: 10px; border-radius: 50%; background: var(--sonne); }
.technik strong { color: var(--tief); }

/* Kosten */
.kosten { width: 100%; border-collapse: collapse; background: var(--flaeche); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--linie); }
.kosten td { padding: 14px 18px; border-bottom: 1px solid var(--linie); }
.kosten td:last-child { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; font-weight: 600; }
.kosten tr:last-child td { border-bottom: 0; background: var(--sonne-hell); font-weight: 700; }
.kosten small { display: block; color: var(--leise); font-weight: 400; }

/* Schritte */
.schritte { counter-reset: schritt; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; list-style: none; padding: 0; margin: 0; }
.schritte li { counter-increment: schritt; background: var(--flaeche); border: 1px solid var(--linie); border-radius: var(--radius); padding: 22px; }
.schritte li::before {
  content: counter(schritt); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: var(--tief); color: #fff; font-weight: 700; margin-bottom: 12px;
}
.schritte p { margin: 0; color: var(--leise); font-size: .96rem; }
@media (max-width: 860px) { .schritte { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .schritte { grid-template-columns: 1fr; } }

/* Partner */
.partner { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.partnerkarte { background: var(--flaeche); border: 1px solid var(--linie); border-radius: var(--radius); padding: 24px; }
.partnerkarte .rolle { font-size: .8rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; color: var(--sonne); }
.partnerkarte p { margin: 0; color: var(--leise); font-size: .96rem; }
@media (max-width: 860px) { .partner { grid-template-columns: 1fr; } }

/* Unterstützen */
.mitmachen { background: var(--tief); color: #e6f1ea; }
.mitmachen h2, .mitmachen h3 { color: #fff; }
.mitmachen .einleitung { color: #c3dacb; }
.wege { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 32px; }
.weg { background: rgba(255, 255, 255, .07); border: 1px solid rgba(255, 255, 255, .16); border-radius: var(--radius); padding: 24px; }
.weg p { color: #c3dacb; margin-bottom: 0; }
.weg a { color: var(--sonne); font-weight: 700; }
.hinweis { margin-top: 28px; font-size: .92rem; color: #a5c4b0; }
@media (max-width: 860px) { .wege { grid-template-columns: 1fr; } }

/* Fuß */
.fuss { padding: 32px 0; font-size: .92rem; color: var(--leise); }
.fuss .rahmen { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
.fuss a { color: var(--leise); margin-left: 18px; }

/* Rechtstexte */
.rechtstext { max-width: 760px; }
.rechtstext h2 { font-size: 1.3rem; margin-top: 1.6em; }

.platzhalter { background: #ffe9a8; padding: 0 4px; border-radius: 4px; }