/* ============================================================
   MAWERA LP „Restholz-zu-Energie" — Haupt-Stylesheet
   Mobile-first · Grid-System mit Full-bleed-Spuren · Anti-Slop-Regeln
   siehe design/DESIGN-SYSTEM.md + .claude/anti-slop.md
   ============================================================ */

/* ---------- Reset & Basis ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: var(--lh-body);
  color: var(--c-ink);
  background: var(--c-paper);
  overflow-x: clip;
}
img, video { max-width: 100%; height: auto; display: block; }
h1, h2, h3, h4, p, ul, ol, dl, figure, fieldset { margin: 0; }
ul, ol { padding: 0; list-style: none; }
a { color: inherit; }
button { font: inherit; cursor: pointer; }
fieldset { border: 0; padding: 0; }
legend { padding: 0; }
sub { font-size: .6em; }

::selection { background: var(--c-orange); color: #fff; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--c-orange); color: #fff; padding: .75rem 1.25rem; text-decoration: none;
}
.skip-link:focus { left: 0; }

:focus-visible { outline: 2px solid var(--c-orange); outline-offset: 2px; }

/* ---------- Layout-Grundgerüst: Grid mit Full-bleed-Spuren ---------- */
:root {
  --pad: max(var(--sp-gutter), calc((100vw - var(--content-max)) / 2));
}

/* ---------- Typo-Bausteine ---------- */
.kicker {
  font-family: var(--font-tech);
  font-weight: 700;
  font-size: var(--fs-micro);
  letter-spacing: var(--ls-micro);
  text-transform: uppercase;
  color: var(--c-orange);
  margin-bottom: var(--sp-3);
}
.kicker--on-dark { color: var(--c-leaf); }

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: var(--fs-display);
  line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  text-wrap: balance;
}

.section-body p { max-width: var(--measure); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  font-family: var(--font-tech);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .04em;
  text-decoration: none;
  text-align: center;
  padding: 1rem 1.75rem;
  border: var(--line) solid transparent;
  border-radius: var(--radius);
  transition: background-color var(--dur-fast) ease, border-color var(--dur-fast) ease, color var(--dur-fast) ease;
}
.btn--primary { background: var(--c-orange); color: #fff; }
.btn--primary:hover, .btn--primary:focus-visible { background: var(--c-orange-hover); }
.btn--ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.45); }
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: #fff; background: rgba(255,255,255,.08); }
.btn--ghost-dark { background: transparent; color: var(--c-ink); border-color: var(--c-ink); }
.btn--ghost-dark:hover, .btn--ghost-dark:focus-visible { background: var(--c-ink); color: var(--c-paper); }
.btn--small { padding: .65rem 1.15rem; font-size: .9rem; }

.btn-support {
  font-family: var(--font-tech);
  font-size: var(--fs-small);
  color: var(--c-ink-dim);
  margin-top: .5rem;
  max-width: 34ch;
}

/* ---------- Maßlinien-Listen (Kennwerte als Annotation) ---------- */
.measure-list li {
  display: flex; align-items: baseline; gap: .75rem;
  padding: .55rem 0;
  border-bottom: var(--line) solid var(--c-green-line);
}
.measure-list__value {
  font-family: var(--font-tech); font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: 1.05rem; white-space: nowrap;
}
.measure-list__label { font-size: var(--fs-micro); letter-spacing: .06em; text-transform: uppercase; opacity: .75; }

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: absolute; top: 0; left: 0; right: 0; z-index: 20;
}
.site-header__inner {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: var(--sp-3) var(--sp-gutter);
  display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3);
}
.site-header__brand img { width: 152px; height: 40px; }
.site-header__nav { display: flex; align-items: center; gap: var(--sp-4); }
.site-header__tel {
  color: var(--c-on-green); text-decoration: none;
  font-family: var(--font-tech); font-weight: 700; font-size: .95rem;
  white-space: nowrap;
  display: inline-block; padding-block: .55rem; /* Touch-Target */
}
.site-header__tel:hover { color: #fff; }
.site-header__tel-label {
  display: block; font-weight: 400; font-size: .7rem;
  letter-spacing: .08em; text-transform: uppercase; color: var(--c-on-green-dim);
}
@media (max-width: 47.99em) {
  .site-header__tel-label { display: none; }
  .site-header__nav .btn { display: none; }
}

/* ============================================================
   S1 · HERO — Full-width Scroll-Scrub-Canvas:
   Restholz wird beim Scrollen zu Heizenergie (Frame-Sequenz)
   ============================================================ */
.hero { background: var(--c-green-deep); color: var(--c-on-green); }
.hero__track { height: 300vh; height: 300svh; }
.hero__sticky {
  position: sticky; top: 0;
  height: 100vh; height: 100svh;
  overflow: hidden;
}
.hero__poster, .hero__canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
}
.hero__canvas { opacity: 0; transition: opacity .4s ease; }
.hero__canvas.is-ready { opacity: 1; }
.hero__scrim {
  position: absolute; inset: 0;
  background:
    linear-gradient(to top, rgba(1, 37, 28, .55) 0%, rgba(1, 37, 28, 0) 32%),
    linear-gradient(105deg, rgba(1, 37, 28, .88) 0%, rgba(1, 37, 28, .62) 34%, rgba(1, 37, 28, .08) 62%, rgba(1, 37, 28, 0) 78%);
}
.hero__content {
  position: absolute;
  left: var(--pad); right: var(--pad);
  top: clamp(6.25rem, 13vh, 8.5rem);
  max-width: 680px;
}
.hero__kicker { margin-bottom: var(--sp-3); }
.hero__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: min(var(--fs-hero), 9.5vh); line-height: var(--lh-display);
  letter-spacing: var(--ls-display);
  color: #fff;
  margin-bottom: var(--sp-4);
  text-wrap: balance;
}
.hero__lead {
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-lead); line-height: 1.55;
  max-width: 46ch;
  margin-bottom: var(--sp-5);
}
.hero__actions { display: flex; flex-wrap: wrap; gap: var(--sp-2); }
.hero__big-number {
  border-top: var(--line) solid rgba(255, 255, 255, .25);
  padding-top: var(--sp-3); margin-top: clamp(1rem, 3.5vh, 3rem);
  max-width: 300px;
}
.hero__big-number-value {
  display: block;
  font-family: var(--font-tech); font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(2.5rem, 6vh, 4.5rem); line-height: .95;
  color: #fff;
}
.hero__big-number-label {
  font-family: var(--font-tech); font-size: var(--fs-micro);
  letter-spacing: var(--ls-micro); text-transform: uppercase;
  color: var(--c-leaf);
}
/* Zustandsleiste: Reststoff → Heizenergie (Scrub-Fortschritt) */
.hero__state {
  position: absolute; top: clamp(5.5rem, 12vh, 7.5rem); right: var(--pad);
  display: flex; align-items: center; gap: var(--sp-2);
  font-family: var(--font-tech); font-weight: 700;
  font-size: var(--fs-micro); letter-spacing: .1em; text-transform: uppercase;
}
.hero__state-from { color: var(--c-on-green); }
.hero__state-to { color: var(--c-orange); opacity: .55; transition: opacity .3s ease; }
.hero__state.is-hot .hero__state-from { opacity: .55; }
.hero__state.is-hot .hero__state-to { opacity: 1; }
.hero__state-track {
  position: relative; width: clamp(3rem, 8vw, 7rem); height: 1px;
  background: rgba(255, 255, 255, .35);
}
.hero__state-dot {
  position: absolute; top: 50%; left: 0;
  width: 9px; height: 9px; margin-top: -4.5px;
  background: var(--c-orange);
  transform: translateX(calc(var(--scrub, 0) * (clamp(3rem, 8vw, 7rem) - 9px)));
}
.hero__measures {
  position: absolute; right: var(--pad); bottom: clamp(4.5rem, 11vh, 7rem);
  background: rgba(1, 37, 28, .78);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  padding: var(--sp-2) var(--sp-3);
  min-width: 230px;
}
.hero__measures li:last-child { border-bottom: 0; }
.hero__hint {
  position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: .5rem;
  font-family: var(--font-tech); font-weight: 700;
  font-size: var(--fs-micro); letter-spacing: .14em; text-transform: uppercase;
  color: rgba(255, 255, 255, .7);
  transition: opacity .4s ease;
}
.hero__hint-line {
  width: 1px; height: clamp(2rem, 6vh, 3.5rem);
  background: linear-gradient(to bottom, rgba(255,255,255,.7), var(--c-orange));
  animation: hint-pulse 2.2s var(--ease-out) infinite;
  transform-origin: top;
}
@keyframes hint-pulse {
  0% { transform: scaleY(.3); opacity: .4; }
  55% { transform: scaleY(1); opacity: 1; }
  100% { transform: scaleY(.3); opacity: .4; }
}
.hero.is-scrubbed .hero__hint { opacity: 0; }
.hero__answer {
  max-width: var(--measure);
  padding: var(--sp-4) var(--pad) var(--sp-5);
  margin: 0;
  font-size: var(--fs-small);
  color: var(--c-on-green-dim);
}
@media (max-width: 63.99em) {
  .hero__content { max-width: none; }
  .hero__big-number-value { font-size: clamp(2.5rem, 6vh, 4rem); }
  .hero__measures, .hero__state { display: none; }
  .hero__hint { left: auto; right: var(--pad); transform: none; align-items: flex-end; }
  .hero__scrim {
    background:
      linear-gradient(to top, rgba(1, 37, 28, .82) 0%, rgba(1, 37, 28, .35) 45%, rgba(1, 37, 28, .1) 70%, rgba(1, 37, 28, .35) 100%);
  }
}
/* Reduced Motion / No-JS: kein Scroll-Track, statisches Bild */
@media (prefers-reduced-motion: reduce) {
  .hero__track { height: auto; height: auto; }
  .hero__sticky { position: relative; height: 100vh; height: 100svh; }
  .hero__canvas, .hero__hint, .hero__state { display: none; }
}
html:not(.js) .hero__track { height: auto; }
html:not(.js) .hero__sticky { position: relative; }
html:not(.js) .hero__canvas, html:not(.js) .hero__hint { display: none; }

/* ============================================================
   S2 · DIE RECHNUNG — Paper, asymmetrischer Kopf,
   versetzte Vergleichs-Panels (Overlap 2), Rechner, Timeline
   ============================================================ */
.calc-section { background: var(--c-paper); padding-block: var(--sp-section); }

.section-grid {
  display: grid;
  grid-template-columns: var(--pad) minmax(0, 5fr) minmax(0, 6fr) var(--pad);
  gap: var(--sp-4) var(--sp-5);
}
.section-head--left { grid-column: 2; }
.section-grid .section-body { grid-column: 3; align-self: end; padding-bottom: .35rem; }
@media (max-width: 63.99em) {
  .section-grid { grid-template-columns: var(--pad) 1fr var(--pad); }
  .section-head--left, .section-grid .section-body { grid-column: 2; }
}

.compare {
  display: grid;
  grid-template-columns: var(--pad) minmax(0, 6fr) minmax(0, 5fr) var(--pad);
  gap: 0 var(--sp-4);
  margin-top: var(--sp-6);
  align-items: start;
}
.compare__col { padding: var(--sp-5); }
.compare__col--today {
  grid-column: 2;
  background: var(--c-white);
  border: var(--line) solid var(--c-line);
}
.compare__col--future {
  grid-column: 3;
  background: var(--c-green);
  color: var(--c-on-green);
  margin-top: var(--sp-5);
  box-shadow: var(--shadow-card);
}
.compare__title {
  font-family: var(--font-tech); font-weight: 700;
  font-size: var(--fs-micro); letter-spacing: var(--ls-micro); text-transform: uppercase;
  margin-bottom: var(--sp-3);
}
.compare__col--today .compare__title { color: var(--c-ink-dim); }
.compare__col--future .compare__title { color: var(--c-leaf); }
.compare__list li {
  padding: .8rem 0;
  border-bottom: var(--line) solid var(--c-line);
  font-size: 1.05rem;
}
.compare__col--future .compare__list li { border-color: var(--c-green-line); }
.compare__list li:last-child { border-bottom: 0; }
.compare__source { font-size: var(--fs-micro); opacity: .75; }
.fn-ref { text-decoration: none; color: var(--c-orange); font-weight: 700; }
.compare-footnotes {
  grid-column: 2 / 4;
  max-width: 72ch;
  padding-inline: var(--pad);
  margin-top: var(--sp-4);
}
.compare-footnotes p { font-size: var(--fs-small); color: var(--c-ink-dim); margin-bottom: .5rem; }
@media (max-width: 63.99em) {
  .compare { grid-template-columns: var(--pad) 1fr var(--pad); }
  .compare__col--today, .compare__col--future { grid-column: 2; }
  .compare__col--future { margin-top: 0; margin-left: var(--sp-4); }
}

/* --- Rechner --- */
.calculator {
  margin: var(--sp-7) var(--pad) 0;
  background: var(--c-anthrazit);
  color: #e7eaec;
  padding: clamp(1.5rem, 4vw, 3rem);
}
.calculator__head { display: flex; flex-wrap: wrap; align-items: baseline; gap: var(--sp-2) var(--sp-4); margin-bottom: var(--sp-4); }
.calculator__title {
  font-family: var(--font-display); font-weight: 800;
  font-size: var(--fs-title); color: #fff;
}
.calculator__sub { font-size: var(--fs-small); color: #9aa3a9; }
.calculator__form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--sp-4);
  margin-bottom: var(--sp-4);
}
.calculator__field label {
  display: block;
  font-family: var(--font-tech); font-weight: 700;
  font-size: var(--fs-micro); letter-spacing: .08em; text-transform: uppercase;
  color: #9aa3a9; margin-bottom: .6rem;
}
.calculator__field select,
.calculator__field input[type="number"] {
  width: 100%;
  background: #2c3540; color: #fff;
  border: var(--line) solid #3d4854;
  border-radius: var(--radius-s);
  padding: .8rem .9rem;
  font: inherit;
}
.calculator__field input[type="range"] {
  width: 100%; accent-color: var(--c-orange); margin-block: .55rem;
}
.calculator__field output {
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: 1.4rem; color: #fff;
}
.calculator__unknown {
  display: flex !important; align-items: center; gap: .5rem;
  text-transform: none !important; letter-spacing: 0 !important;
  font-family: var(--font-body) !important; font-weight: 400 !important;
  font-size: var(--fs-small) !important; color: #9aa3a9 !important;
  margin-top: .6rem;
}
.calculator__result {
  border-top: var(--line) solid #3d4854;
  border-bottom: var(--line) solid #3d4854;
  padding: var(--sp-4) 0;
  min-height: 5.5rem;
}
.calculator__prompt { color: #9aa3a9; }
.calculator__result-value {
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: clamp(1.9rem, 4.5vw, 3rem); line-height: 1.1;
  color: var(--c-orange);
  display: block; margin-bottom: .4rem;
}
.calculator__result-note { font-size: var(--fs-small); color: #c3cad0; max-width: 70ch; }
.calculator__assumptions { margin-top: var(--sp-3); font-size: var(--fs-small); color: #9aa3a9; }
.calculator__assumptions summary { cursor: pointer; font-family: var(--font-tech); font-weight: 700; padding-block: .6rem; /* Touch-Target */ }
.calculator__assumptions ul { margin-top: .6rem; padding-left: 1.1rem; list-style: square; }
.calculator__bridge { margin-top: var(--sp-4); }
.calculator__bridge p { font-size: var(--fs-small); color: #c3cad0; margin-bottom: var(--sp-2); }
.calculator__cta { margin-top: var(--sp-4); }
.calculator__cta .btn-support { color: #9aa3a9; margin: 0 0 .5rem; }

/* --- Timeline „Warum jetzt" --- */
.timeline { margin: var(--sp-7) var(--pad) 0; }
.timeline__title {
  font-family: var(--font-display); font-weight: 800; font-size: var(--fs-title);
  margin-bottom: var(--sp-4);
}
.timeline__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  border-top: 2px solid var(--c-ink);
}
.timeline__item { padding: var(--sp-3) var(--sp-4) 0 0; position: relative; }
.timeline__item::before {
  content: ""; position: absolute; top: -5px; left: 0;
  width: 9px; height: 9px; background: var(--c-orange);
}
.timeline__year {
  display: block;
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: 2rem; line-height: 1; margin-bottom: .5rem;
}
.timeline__item p { font-size: var(--fs-small); max-width: 38ch; }

.sources {
  padding: var(--sp-5) var(--pad) 0;
  font-family: var(--font-tech); font-size: var(--fs-micro);
  letter-spacing: .04em; color: var(--c-ink-dim);
}

/* ============================================================
   S3 · DIE REFERENZ — Weiß, Bild full-bleed links (Grid-Bruch),
   Display-Zahl überlappt Bildkante (Overlap 3)
   ============================================================ */
.reference { background: var(--c-white); padding-block: var(--sp-section); }
.reference__grid {
  display: grid;
  grid-template-columns: minmax(0, 13fr) var(--sp-6) minmax(0, 9fr) var(--pad);
  align-items: center;
}
.reference__media { grid-column: 1; position: relative; }
.reference__media > img { width: 100%; height: auto; }
.measure-list--on-image {
  position: absolute; left: 0; bottom: 0;
  background: rgba(1, 37, 28, .85);
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  color: var(--c-on-green);
  padding: var(--sp-2) var(--sp-3);
}
.measure-list--on-image li:last-child { border-bottom: 0; }
.reference__big-number {
  position: absolute; right: var(--sp-6); bottom: 0;
  transform: translateY(45%);
  background: var(--c-green);
  color: #fff;
  padding: var(--sp-4) var(--sp-5);
  box-shadow: var(--shadow-card);
  text-align: left;
}
.reference__big-number-value {
  display: block;
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: clamp(2.4rem, 5vw, 4rem); line-height: 1;
}
.reference__big-number-label {
  font-family: var(--font-tech); font-size: var(--fs-micro);
  letter-spacing: var(--ls-micro); text-transform: uppercase; color: var(--c-leaf);
}
.reference__content { grid-column: 3; padding-block: var(--sp-5); }
.reference__content .section-title { margin-bottom: var(--sp-4); }
.reference__content p { max-width: var(--measure); }
.reference__closing {
  margin-top: var(--sp-3);
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-lead); line-height: 1.5;
  color: var(--c-green);
}
.reference__actions { margin-top: var(--sp-5); }
@media (max-width: 63.99em) {
  .reference__grid { grid-template-columns: 1fr; }
  .reference__media { grid-column: 1; }
  .reference__big-number {
    position: static; transform: none;
    display: inline-block; margin: calc(-1 * var(--sp-5)) 0 0 var(--sp-gutter);
  }
  .reference__content { grid-column: 1; padding: var(--sp-5) var(--pad) 0; }
}

/* ============================================================
   S4 · IHR MATERIAL — Grün-Vollfläche, Tab-Interaktion
   ============================================================ */
.material {
  background: var(--c-green);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.05'/%3E%3C/svg%3E");
  color: var(--c-on-green);
  padding-block: var(--sp-section);
}
.material .section-title { color: #fff; }
.material .section-body p { color: var(--c-on-green); }

.matrix { margin: var(--sp-6) var(--pad) 0; }
.matrix__tabs {
  display: flex; gap: var(--sp-2);
  overflow-x: auto;
  padding-bottom: var(--sp-2);
  scrollbar-width: thin;
}
.matrix__tab {
  flex: 0 0 auto;
  width: clamp(120px, 14vw, 168px);
  background: transparent;
  border: var(--line) solid var(--c-green-line);
  border-radius: var(--radius);
  padding: 0 0 .6rem;
  color: var(--c-on-green);
  text-align: left;
  transition: border-color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}
.matrix__tab img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; margin-bottom: .55rem; filter: saturate(.85); }
.matrix__tab span {
  display: block; padding-inline: .6rem;
  font-family: var(--font-tech); font-weight: 700; font-size: .85rem; line-height: 1.25;
}
.matrix__tab:hover { border-color: var(--c-leaf); }
.matrix__tab.is-active { border-color: var(--c-orange); background: var(--c-green-soft); }
.matrix__tab.is-active img { filter: none; }

.matrix__panels { margin-top: var(--sp-4); }
.matrix__panel {
  display: grid;
  grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  gap: var(--sp-5);
  background: var(--c-green-soft);
  padding: clamp(1.25rem, 3vw, 2.5rem);
  align-items: center;
}
.matrix__panel[hidden] { display: none; }
.matrix__panel img { width: 100%; height: 100%; object-fit: cover; max-height: 340px; }
.matrix__panel-body h3 {
  font-family: var(--font-display); font-weight: 800;
  font-size: var(--fs-title); color: #fff;
  margin-bottom: var(--sp-3);
}
.matrix__panel-body p { max-width: 60ch; }
.matrix__panel-body a { color: var(--c-leaf); }
@media (max-width: 47.99em) {
  .matrix__panel { grid-template-columns: 1fr; gap: var(--sp-3); }
  .matrix__panel img { max-height: 220px; }
}

.material__closing {
  margin: var(--sp-6) var(--pad) 0;
  display: flex; flex-wrap: wrap; align-items: flex-start;
  gap: var(--sp-3) var(--sp-6);
  border-top: var(--line) solid var(--c-green-line);
  padding-top: var(--sp-5);
}
.material__closing > p {
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-lead); max-width: 34ch; color: #fff;
}
.material__closing .btn-support { color: var(--c-on-green-dim); }

/* ============================================================
   S5 · AUS DER PRAXIS — Paper, Editorial-Zeilen statt Cards
   ============================================================ */
.cases { background: var(--c-paper); padding-block: var(--sp-section); }
.section-head--offset {
  padding-inline: var(--pad);
  max-width: calc(var(--content-max) * .72 + var(--pad) * 2);
  margin-bottom: var(--sp-6);
}
.section-head--offset .section-title { margin-top: 0; }

.cases__list { border-top: 2px solid var(--c-ink); margin-inline: var(--pad); }
.case {
  display: grid;
  grid-template-columns: 4rem minmax(0, 4fr) minmax(0, 7fr);
  gap: var(--sp-4) var(--sp-5);
  padding-block: var(--sp-5);
  border-bottom: var(--line) solid var(--c-line);
  align-items: center;
}
.case:nth-child(2) { grid-template-columns: 4rem minmax(0, 3fr) minmax(0, 8fr); }
.case__index {
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: 1.1rem; color: var(--c-orange);
  align-self: start; padding-top: .3rem;
}
.case__media img {
  width: 100%; object-fit: cover; aspect-ratio: 4 / 3;
  filter: saturate(.8);
  transition: filter var(--dur-fast) ease;
}
.case:hover .case__media img { filter: saturate(1); }
.case:hover .case__index { color: var(--c-green); }
.case__index { transition: color var(--dur-fast) ease; }
.case__media--portrait img { aspect-ratio: 3 / 4; max-width: 300px; }
.case__title {
  font-family: var(--font-display); font-weight: 800; font-size: var(--fs-title);
  margin-bottom: var(--sp-2);
}
.case__body p { max-width: var(--measure); }
.case__body a { color: var(--c-green); font-weight: 500; }
.case__note { font-size: var(--fs-small); color: var(--c-ink-dim); }
.cases__closing {
  margin: var(--sp-5) var(--pad) 0;
  font-family: var(--font-tech); font-size: var(--fs-small); color: var(--c-ink-dim);
}
@media (max-width: 63.99em) {
  .case, .case:nth-child(2) { grid-template-columns: 3rem 1fr; }
  .case__media { grid-column: 2; max-width: 420px; }
  .case__body { grid-column: 2; }
}

/* ============================================================
   S6 · HOLZSTAUB — Anthrazit, Schnittgrafik + Video, Fakten 01–04
   ============================================================ */
.dust {
  background: var(--c-anthrazit);
  color: #e7eaec;
  padding-block: var(--sp-section);
}
.dust .section-title { color: #fff; margin-bottom: var(--sp-4); }
.dust__grid {
  display: grid;
  grid-template-columns: var(--pad) minmax(0, 7fr) minmax(0, 4fr) var(--pad);
  gap: var(--sp-6) var(--sp-6);
}
.dust__content { grid-column: 2; }
.dust__content > p { max-width: var(--measure); margin-bottom: var(--sp-3); }
.dust__media { grid-column: 3; display: grid; gap: var(--sp-5); align-content: start; }
.dust__cutaway {
  background: var(--c-paper);
  padding: var(--sp-3);
}
.dust__cutaway img { width: 100%; }
.dust__cutaway figcaption, .dust__video figcaption {
  font-family: var(--font-tech); font-size: var(--fs-micro);
  letter-spacing: .05em; color: #9aa3a9;
  padding-top: .6rem;
  border-top: var(--line) solid #3d4854;
  margin-top: .6rem;
}
.dust__cutaway figcaption { color: var(--c-ink-dim); border-color: var(--c-line); }
.dust__video video { width: 100%; background: #000; }

.fact-list { margin-block: var(--sp-5); border-top: var(--line) solid #3d4854; max-width: 60ch; }
.fact-list__item {
  display: grid; grid-template-columns: 3.25rem 1fr; gap: var(--sp-3);
  padding-block: var(--sp-3);
  border-bottom: var(--line) solid #3d4854;
}
.fact-list__index {
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  color: var(--c-orange); font-size: 1.1rem;
}
.fact-list__item p { font-size: 1.02rem; }
.dust__actions { margin-top: var(--sp-5); }
.dust__actions .btn-support { color: #9aa3a9; }
@media (max-width: 63.99em) {
  .dust__grid { grid-template-columns: var(--pad) 1fr var(--pad); }
  .dust__content, .dust__media { grid-column: 2; }
  .dust__media { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
}

/* ============================================================
   S7 · BETRIEB & SERVICE — Paper, Text links schmal, Media rechts
   ============================================================ */
.operation { background: var(--c-paper); padding-block: var(--sp-section); }
.operation__grid {
  display: grid;
  grid-template-columns: var(--pad) minmax(0, 6fr) minmax(0, 5fr) var(--pad);
  gap: var(--sp-6);
  align-items: start;
}
.operation__content { grid-column: 2; }
.operation__content .section-title { margin-bottom: var(--sp-4); }
.operation__content > p { max-width: var(--measure); margin-bottom: var(--sp-3); }
.service-list { margin-top: var(--sp-5); border-top: 2px solid var(--c-ink); max-width: 62ch; }
.service-list li {
  padding: .85rem 0;
  border-bottom: var(--line) solid var(--c-line);
  font-size: 1.02rem;
}
.operation__media { grid-column: 3; position: sticky; top: var(--sp-4); }
.operation__media img { width: 100%; border: var(--line) solid var(--c-line); background: #fff; }
.operation__big-number { margin-top: var(--sp-4); border-top: 2px solid var(--c-ink); padding-top: var(--sp-3); }
.operation__big-number-value {
  display: block;
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: clamp(3rem, 6vw, 5rem); line-height: 1; color: var(--c-green);
}
.operation__big-number-label {
  font-family: var(--font-tech); font-size: var(--fs-micro);
  letter-spacing: .08em; text-transform: uppercase; color: var(--c-ink-dim);
}
@media (max-width: 63.99em) {
  .operation__grid { grid-template-columns: var(--pad) 1fr var(--pad); }
  .operation__content, .operation__media { grid-column: 2; }
  .operation__media { position: static; }
}

/* ============================================================
   S8 · MACHBARKEIT — Weiß mit Blueprint-Raster, 01 groß + Stack
   ============================================================ */
.feasibility {
  background: var(--c-white);
  background-image: repeating-linear-gradient(to right, transparent, transparent 119px, rgba(1, 65, 50, .05) 119px, rgba(1, 65, 50, .05) 120px);
  padding-block: var(--sp-section);
}
.section-head--wide { padding-inline: var(--pad); margin-bottom: var(--sp-6); max-width: calc(60rem + 2 * var(--pad)); }
.feasibility__grid {
  display: grid;
  grid-template-columns: var(--pad) minmax(0, 5fr) minmax(0, 6fr) var(--pad);
  gap: var(--sp-5);
  align-items: start;
}
.feas-block { position: relative; padding: var(--sp-4) 0 var(--sp-4) 4rem; }
.feas-block__index {
  position: absolute; left: 0; top: var(--sp-4);
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: 1.1rem; color: var(--c-orange);
}
.feas-block h3 {
  font-family: var(--font-display); font-weight: 800;
  font-size: var(--fs-title); margin-bottom: var(--sp-2);
}
.feas-block p { max-width: 58ch; }
.feas-block--media { grid-column: 2; background: var(--c-paper); padding: var(--sp-5) var(--sp-5) 0 calc(var(--sp-5) + 4rem); }
.feas-block--media .feas-block__index { left: var(--sp-5); top: var(--sp-5); }
.feas-block--media img { margin-top: var(--sp-4); width: 100%; max-height: 460px; object-fit: cover; object-position: top; }
.feasibility__stack { grid-column: 3; border-top: 2px solid var(--c-ink); }
.feasibility__stack .feas-block { border-bottom: var(--line) solid var(--c-line); }
.feas-block__link { margin-top: var(--sp-2); }
.feas-block__link a { color: var(--c-orange); font-family: var(--font-tech); font-weight: 700; text-decoration: none; }
.feas-block__link a:hover { text-decoration: underline; }
.feas-block__countries { margin-block: var(--sp-3); }
.feas-block__countries div {
  display: grid; grid-template-columns: 7.5rem 1fr; gap: var(--sp-3);
  padding-block: .65rem;
  border-bottom: var(--line) solid var(--c-line);
}
.feas-block__countries dt { font-family: var(--font-tech); font-weight: 700; font-size: .95rem; }
.feas-block__countries dd { margin: 0; font-size: .98rem; }
@media (max-width: 63.99em) {
  .feasibility__grid { grid-template-columns: var(--pad) 1fr var(--pad); }
  .feas-block--media, .feasibility__stack { grid-column: 2; }
  .feas-block__countries div { grid-template-columns: 1fr; gap: .2rem; }
}

/* ============================================================
   S9 · IHR PROJEKT — Grün, vertikale Schritte
   ============================================================ */
.process {
  background: var(--c-green);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)' opacity='.05'/%3E%3C/svg%3E");
  color: var(--c-on-green);
  padding-block: var(--sp-section);
}
.process .section-head--left { padding-inline: var(--pad); margin-bottom: var(--sp-6); max-width: calc(56rem + 2 * var(--pad)); }
.process .section-title { color: #fff; }
.steps {
  margin-inline: var(--pad);
  max-width: 56rem;
  border-left: var(--line) solid var(--c-green-line);
}
.step {
  display: grid; grid-template-columns: 5.5rem 1fr; gap: var(--sp-4);
  padding: var(--sp-4) 0 var(--sp-4) var(--sp-4);
  position: relative;
}
.step::before {
  content: ""; position: absolute; left: -5px; top: calc(var(--sp-4) + .55em);
  width: 9px; height: 9px; background: var(--c-orange);
}
.step__index {
  font-family: var(--font-tech); font-weight: 700; font-variant-numeric: tabular-nums;
  font-size: 2rem; line-height: 1.1; color: var(--c-leaf);
}
.step__body h3 {
  font-family: var(--font-display); font-weight: 800; font-size: 1.25rem;
  color: #fff; margin-bottom: .5rem;
}
.step__body p { max-width: 58ch; }
.process__closing {
  margin: var(--sp-6) var(--pad) 0;
  display: flex; flex-wrap: wrap; align-items: center; gap: var(--sp-3) var(--sp-5);
}
.process__closing p {
  font-family: var(--font-display); font-weight: 400;
  font-size: var(--fs-lead); color: #fff; max-width: 30ch;
}

/* ============================================================
   S10 · FINALE — Paper; Formular-Karte + Aside; FAQ
   ============================================================ */
.finale { background: var(--c-paper); padding-block: var(--sp-section); }
.section-head--center {
  text-align: center;
  max-width: 46rem;
  margin: 0 auto var(--sp-6);
  padding-inline: var(--sp-gutter);
}
.finale__intro { margin-top: var(--sp-3); color: var(--c-ink-dim); }

.finale__grid {
  display: grid;
  grid-template-columns: var(--pad) minmax(0, 7fr) minmax(0, 4fr) var(--pad);
  gap: var(--sp-5);
  align-items: start;
}

/* --- Formular --- */
.lead-form {
  grid-column: 2;
  background: var(--c-white);
  border: var(--line) solid var(--c-line);
  box-shadow: var(--shadow-card);
  padding: clamp(1.5rem, 4vw, 3rem);
}
.lead-form__hp { position: absolute !important; left: -9999px !important; width: 1px; height: 1px; overflow: hidden; }
.lead-form__legend {
  display: block; width: 100%;
  font-family: var(--font-display); font-weight: 800; font-size: var(--fs-title);
  margin-bottom: var(--sp-4);
}
.lead-form__progress {
  display: block;
  font-family: var(--font-tech); font-weight: 700; font-size: var(--fs-micro);
  letter-spacing: var(--ls-micro); text-transform: uppercase; color: var(--c-orange);
  margin-bottom: .5rem;
}
.lead-form__step[hidden] { display: none; }

.lead-form__tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--sp-2);
}
.tile {
  position: relative; display: block;
  border: var(--line) solid var(--c-line);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--dur-fast) ease, box-shadow var(--dur-fast) ease;
}
.tile input { position: absolute; opacity: 0; inset: 0; cursor: pointer; }
.tile img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.tile span {
  display: block; padding: .6rem .7rem;
  font-family: var(--font-tech); font-weight: 700; font-size: .85rem; line-height: 1.25;
}
.tile--text { display: flex; align-items: center; justify-content: center; min-height: 7rem; text-align: center; background: var(--c-paper-deep); }
.tile:hover { border-color: var(--c-steel); }
.tile:has(input:checked) { border-color: var(--c-orange); box-shadow: inset 0 0 0 1px var(--c-orange); }
.tile:has(input:focus-visible) { outline: 2px solid var(--c-orange); outline-offset: 2px; }
.tile:has(input:checked) span::after { content: " ✓"; color: var(--c-orange); }

.lead-form__fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-3) var(--sp-4);
}
.lead-form__field--full { grid-column: 1 / -1; }
.lead-form__field label {
  display: block;
  font-family: var(--font-tech); font-weight: 700; font-size: .9rem;
  margin-bottom: .45rem;
}
.lead-form__field label small { font-weight: 400; color: var(--c-ink-dim); }
.lead-form__field input,
.lead-form__field select,
.lead-form__field textarea {
  width: 100%;
  border: var(--line) solid var(--c-line);
  border-radius: var(--radius-s);
  background: #fff;
  padding: .85rem .9rem;
  font: inherit;
  color: var(--c-ink);
}
.lead-form__field input:focus,
.lead-form__field select:focus,
.lead-form__field textarea:focus { border-color: var(--c-green); outline: none; }
.lead-form__field input[aria-invalid="true"],
.lead-form__field select[aria-invalid="true"] { border-color: var(--c-orange); }

.lead-form__checks { margin-top: var(--sp-4); display: grid; gap: .7rem; }
.lead-form__checks label, .lead-form__privacy {
  display: flex; gap: .7rem; align-items: flex-start;
  font-size: var(--fs-small); line-height: 1.55; cursor: pointer;
}
.lead-form__checks input, .lead-form__privacy input {
  width: 1.15rem; height: 1.15rem; margin-top: .15rem; flex: 0 0 auto;
  accent-color: var(--c-orange);
}
.lead-form__privacy { margin-top: var(--sp-4); }
.lead-form__privacy a { color: var(--c-green); }

.lead-form__error {
  color: #b23c08; font-size: var(--fs-small); margin-top: .6rem;
}
.lead-form__nav {
  display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3);
  margin-top: var(--sp-5);
}
.lead-form__note {
  margin-top: var(--sp-2); text-align: right;
  font-size: var(--fs-small); color: var(--c-ink-dim);
}
.lead-form__phone {
  margin-top: var(--sp-4); padding-top: var(--sp-3);
  border-top: var(--line) solid var(--c-line);
  font-family: var(--font-tech); font-size: var(--fs-small); color: var(--c-ink-dim);
}
.lead-form__phone a { color: var(--c-green); font-weight: 700; text-decoration: none; }
.lead-form__result h3 {
  font-family: var(--font-display); font-weight: 800; font-size: var(--fs-title);
  color: var(--c-green); margin-bottom: var(--sp-2);
}
.lead-form__result p { margin-bottom: var(--sp-4); max-width: 52ch; }
.lead-form__global-error {
  background: #fdf0e8; border: var(--line) solid var(--c-orange);
  padding: var(--sp-3); margin-bottom: var(--sp-3);
  font-size: var(--fs-small);
}

/* --- Aside --- */
.finale__aside { grid-column: 3; display: grid; gap: var(--sp-5); }
.finale__contact, .finale__tour { border-top: 2px solid var(--c-ink); padding-top: var(--sp-3); }
.finale__contact h3, .finale__tour h3 {
  font-family: var(--font-tech); font-weight: 700; font-size: var(--fs-micro);
  letter-spacing: var(--ls-micro); text-transform: uppercase; color: var(--c-ink-dim);
  margin-bottom: var(--sp-2);
}
.finale__tel {
  font-family: var(--font-tech); font-weight: 700; font-size: 1.5rem;
  color: var(--c-green); text-decoration: none;
}
.finale__contact a { color: var(--c-green); }
.finale__tour-link { display: block; text-decoration: none; position: relative; }
.finale__tour-link img { width: 100%; }
.finale__tour-link span {
  position: absolute; left: 0; bottom: 0;
  background: var(--c-orange); color: #fff;
  font-family: var(--font-tech); font-weight: 700; font-size: .95rem;
  padding: .7rem 1.1rem;
}
.finale__tour-link:hover span { background: var(--c-orange-hover); }
@media (max-width: 63.99em) {
  .finale__grid { grid-template-columns: var(--pad) 1fr var(--pad); }
  .lead-form, .finale__aside { grid-column: 2; }
}

/* --- FAQ --- */
.faq { margin: var(--sp-8) var(--pad) 0; max-width: 52rem; }
@media (min-width: 64em) { .faq { margin-left: calc(var(--pad) + 8%); } }
.faq__title {
  font-family: var(--font-display); font-weight: 800; font-size: var(--fs-display);
  line-height: var(--lh-display); margin-bottom: var(--sp-5);
}
.faq__list { border-top: 2px solid var(--c-ink); }
.faq__item { border-bottom: var(--line) solid var(--c-line); }
.faq__item summary {
  list-style: none; cursor: pointer;
  display: flex; justify-content: space-between; align-items: baseline; gap: var(--sp-3);
  padding: var(--sp-3) 0;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary h3 {
  font-family: var(--font-display); font-weight: 800; font-size: 1.15rem; line-height: 1.35;
}
.faq__item summary::after {
  content: "+";
  font-family: var(--font-tech); font-weight: 700; font-size: 1.5rem;
  color: var(--c-orange); flex: 0 0 auto; line-height: 1;
  transition: transform var(--dur-fast) ease;
}
.faq__item[open] summary::after { transform: rotate(45deg); }
.faq__item > p { padding: 0 0 var(--sp-4); max-width: var(--measure); }

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer { background: var(--c-green-deep); color: var(--c-on-green); }
.site-footer__grid {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: var(--sp-7) var(--sp-gutter) var(--sp-5);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--sp-5);
}
.site-footer h3 {
  font-family: var(--font-tech); font-weight: 700; font-size: var(--fs-micro);
  letter-spacing: var(--ls-micro); text-transform: uppercase; color: var(--c-leaf);
  margin-bottom: var(--sp-2);
}
.site-footer p { font-size: var(--fs-small); margin-bottom: var(--sp-2); max-width: 40ch; }
.site-footer a { color: #fff; }
.site-footer__brand img { margin-bottom: var(--sp-3); }
.site-footer__legal {
  border-top: var(--line) solid var(--c-green-line);
}
.site-footer__legal p {
  max-width: var(--content-max);
  margin-inline: auto;
  padding: var(--sp-3) var(--sp-gutter);
  font-size: var(--fs-micro); color: var(--c-on-green-dim);
}
.site-footer__legal a { color: var(--c-on-green); }

/* ============================================================
   MOTION — orchestriert, sparsam
   ============================================================ */
.js-anim .reveal { opacity: 0; transform: translateY(24px); }
.js-anim .reveal.is-visible {
  opacity: 1; transform: none;
  transition: opacity var(--dur-reveal) var(--ease-out), transform var(--dur-reveal) var(--ease-out);
}
/* Hero-Load-Reveal (gestaffelt, nur beim Laden, nur bei sichtbarem Tab) */
.js-anim .hero__kicker, .js-anim .hero__title, .js-anim .hero__lead,
.js-anim .hero__actions, .js-anim .hero__big-number { opacity: 0; transform: translateY(18px); }
.js-loaded .hero__kicker, .js-loaded .hero__title, .js-loaded .hero__lead,
.js-loaded .hero__actions, .js-loaded .hero__big-number {
  opacity: 1; transform: none;
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.js-loaded .hero__title { transition-delay: .08s; }
.js-loaded .hero__lead { transition-delay: .16s; }
.js-loaded .hero__actions { transition-delay: .24s; }
.js-loaded .hero__big-number { transition-delay: .34s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal, .hero__kicker, .hero__title, .hero__lead, .hero__actions, .hero__big-number {
    opacity: 1 !important; transform: none !important; transition: none !important;
  }
}
/* Fallback ohne JS: alles sichtbar */
html:not(.js) .reveal,
html:not(.js) .hero__kicker, html:not(.js) .hero__title, html:not(.js) .hero__lead,
html:not(.js) .hero__actions, html:not(.js) .hero__big-number { opacity: 1; transform: none; }