/* =========================================================================
   Frank Colberg — Regionalleiter Bayern, interdomus Haustechnik

   Gestaltungsidee: Installationszeichnung.
   Graphit als Grund, Vorlauf-Rot als Akzent, Rücklauf-Blau als Struktur.
   Leitmotiv ist die durchgehende Vorlauf-Linie am linken Rand; an jedem
   Abschnitt sitzt ein Ventilsymbol (Quadrat auf der Spitze).
   ========================================================================= */

/* ---------- 1. Schriften -------------------------------------------------- */

@font-face {
  font-family: "Archivo Expanded";
  src: url("../fonts/archivo-expanded.woff2") format("woff2-variations");
  font-weight: 400 800;
  font-stretch: 100% 125%;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Plex Sans";
  src: url("../fonts/plex-sans.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Plex Sans";
  src: url("../fonts/plex-sans-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: "Plex Mono";
  src: url("../fonts/plex-mono.woff2") format("woff2");
  font-weight: 400 600;
  font-style: normal;
  font-display: swap;
}

/* ---------- 2. Tokens ----------------------------------------------------- */

:root {
  /* Grund — Graphit, leicht warm, nicht blauschwarz */
  --ink: #0e1112;
  --ink-2: #14181a;
  --ink-3: #1b2023;

  --line: rgba(233, 238, 236, 0.1);
  --line-2: rgba(233, 238, 236, 0.2);
  --line-3: rgba(233, 238, 236, 0.34);

  --text: #e9eeec;
  --text-2: #96a19f;
  --text-3: #7f8b89;

  /* Vorlauf / Rücklauf — das Farbpaar jedes Heizungsschemas */
  --vor: #e2483d;
  --vor-2: #f2685c;
  --vor-dim: rgba(226, 72, 61, 0.28);
  --rueck: #4c8ad8;

  --ok: #4fb286;

  /* Schrift */
  --display: "Archivo Expanded", "Archivo", "Bahnschrift", "Arial Narrow",
    "Helvetica Neue", sans-serif;
  --body: "Plex Sans", "IBM Plex Sans", "Segoe UI", system-ui, -apple-system,
    Roboto, Arial, sans-serif;
  --mono: "Plex Mono", "IBM Plex Mono", "Consolas", "SFMono-Regular", ui-monospace,
    monospace;

  --fs-display: clamp(2.4rem, 0.6rem + 5.6vw, 5.9rem);
  --fs-h1: clamp(2.1rem, 1.3rem + 3vw, 3.9rem);
  --fs-h2: clamp(1.75rem, 1.25rem + 2.1vw, 3.05rem);
  --fs-h3: clamp(1.12rem, 1.02rem + 0.45vw, 1.4rem);
  --fs-lead: clamp(1.05rem, 0.99rem + 0.34vw, 1.28rem);
  --fs-body: 1rem;
  --fs-sm: 0.9375rem;
  --fs-xs: 0.8125rem;
  --fs-mono: 0.72rem;

  /* Raster */
  --gutter: clamp(1.25rem, 0.5rem + 3vw, 4rem);
  --container: 84rem;
  --measure: 54ch;
  --section-y: clamp(4rem, 2rem + 7vw, 9rem);

  /* Eigene Spalte links für die Vorlauf-Linie. Auf schmalen Geräten 0,
     dadurch kann die Linie den Inhalt nie schneiden. */
  --rail-w: 0rem;
  --pad-l: calc(var(--gutter) + var(--rail-w));


  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 2.5rem;
  --sp-8: 3.5rem;
  --sp-9: 5rem;

  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --dur: 220ms;
}

/* ---------- 3. Reset ------------------------------------------------------ */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 6rem;
  background: var(--ink);
}

body {
  margin: 0;
  min-height: 100dvh;
  background: var(--ink);
  color: var(--text);
  font-family: var(--body);
  font-size: var(--fs-body);
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.01em;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  color: inherit;
}

:where(a, button, input, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--vor-2);
  outline-offset: 3px;
}

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

/* ---------- 4. Layout ----------------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad-l) var(--gutter);
}

.section {
  position: relative;
  padding-block: var(--section-y);
}

.section--tight {
  padding-block: clamp(3rem, 2rem + 3.5vw, 5.5rem);
}

.section--raised {
  background: var(--ink-2);
}

.section + .section--raised,
.section--raised + .section {
  border-top: 1px solid var(--line);
}

/* ---------- 5. Vorlauf-Linie (Leitmotiv) ---------------------------------- */

main {
  position: relative;
}

/* Der Träger spiegelt exakt die Box von .container — dadurch sitzt die Linie
   auf demselben Raster wie der Inhalt. Kein vw, sonst verschiebt die
   Scrollbar die Linie gegenüber dem zentrierten Inhalt. */
.spine-rail {
  position: absolute;
  inset-block: 0;
  inset-inline: 0;
  max-width: var(--container);
  margin-inline: auto;
  pointer-events: none;
  display: none;
}

/* Die Linie läuft mittig durch die Rail-Spalte — links wie rechts bleibt
   immer die halbe Spaltenbreite frei. */
.spine {
  position: absolute;
  inset-block: 0;
  left: calc(var(--gutter) + var(--rail-w) / 2);
  width: 1px;
  background: var(--vor-dim);
}

.spine__fill {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, var(--vor), var(--vor) 70%, transparent);
  transform-origin: top;
  transform: scaleY(0);
}

@supports (animation-timeline: scroll()) {
  .spine__fill {
    animation: spine-fill linear both;
    animation-timeline: scroll(root block);
  }
}

@keyframes spine-fill {
  from {
    transform: scaleY(0);
  }
  to {
    transform: scaleY(1);
  }
}

/* Ventilsymbol: Quadrat auf der Spitze, sitzt auf der Linie */
.rail {
  position: relative;
}

.rail::before {
  content: "";
  position: absolute;
  left: calc(var(--rail-w) / -2);
  top: 0.42rem;
  width: 9px;
  height: 9px;
  transform: translateX(-50%) rotate(45deg);
  background: var(--vor);
  box-shadow: 0 0 0 5px var(--ink);
  display: none;
}

.section--raised .rail::before {
  box-shadow: 0 0 0 5px var(--ink-2);
}

@media (min-width: 62em) {
  :root {
    --rail-w: 3.5rem;
  }

  .spine-rail,
  .rail::before {
    display: block;
  }
}

@media (prefers-reduced-motion: reduce) {
  .spine__fill {
    animation: none;
    transform: scaleY(1);
    opacity: 0.5;
  }
}

/* ---------- 6. Raster-Bausteine ------------------------------------------- */

.row {
  display: grid;
  gap: var(--sp-6);
}

@media (min-width: 62em) {
  .row {
    grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
    gap: clamp(2rem, 1rem + 4vw, 5rem);
  }

  .row--sticky > .rail {
    position: sticky;
    top: 7.5rem;
    align-self: start;
  }
}

.row__body {
  max-width: 52rem;
}

.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: var(--line);
}

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 200;
  transform: translateY(-120%);
  padding: 0.85rem 1.4rem;
  background: var(--vor);
  color: #0e1112;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: transform var(--dur) var(--ease);
}

.skip-link:focus-visible {
  transform: translateY(0);
}

/* ---------- 7. Typografie ------------------------------------------------- */

.display {
  font-family: var(--display);
  font-size: var(--fs-display);
  font-weight: 800;
  font-stretch: 118%;
  line-height: 0.9;
  letter-spacing: -0.005em;
  text-transform: uppercase;
}

.h1 {
  font-size: var(--fs-h1);
  font-weight: 700;
  font-stretch: 112%;
  line-height: 0.96;
  text-transform: uppercase;
}

.h2 {
  font-size: var(--fs-h2);
  font-weight: 700;
  font-stretch: 108%;
  line-height: 1.02;
}

.h3 {
  font-family: var(--body);
  font-size: var(--fs-h3);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.hl {
  color: var(--vor);
}

.lead {
  font-size: var(--fs-lead);
  line-height: 1.5;
  color: var(--text-2);
  max-width: var(--measure);
}

/* Mono-Label — die Datenblatt-Textur */
.lbl {
  display: block;
  font-family: var(--mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.lbl--vor {
  color: var(--vor);
}

.lbl--bright {
  color: var(--text);
}

.prose {
  max-width: var(--measure);
  color: var(--text-2);
  font-size: var(--fs-lead);
  line-height: 1.55;
}

.prose > * + * {
  margin-block-start: 0.9em;
}

.prose strong {
  color: var(--text);
  font-weight: 600;
}

.small {
  font-size: var(--fs-sm);
  color: var(--text-2);
  line-height: 1.6;
}

/* ---------- 8. Schaltflächen ---------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.7em;
  min-height: 3.4rem;
  padding: 1rem 1.8rem;
  border: 1px solid var(--vor);
  border-radius: 0;
  background: var(--vor);
  color: #0e1112;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.btn:hover {
  background: transparent;
  color: var(--vor-2);
}

.btn svg {
  flex: none;
  width: 1.15em;
  height: 1.15em;
}

.btn--ghost {
  background: transparent;
  border-color: var(--line-2);
  color: var(--text);
}

.btn--ghost:hover {
  background: transparent;
  border-color: var(--text);
  color: var(--text);
}

.btn[aria-disabled="true"],
.btn:disabled {
  opacity: 0.45;
  pointer-events: none;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.tlink {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-2);
  border-bottom: 1px solid var(--line-2);
  padding-block-end: 0.4rem;
  transition: color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.tlink:hover {
  color: var(--text);
  border-bottom-color: var(--vor);
}

.tlink svg {
  width: 0.95em;
  height: 0.95em;
}

/* ---------- 9. Kopfzeile -------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(14, 17, 18, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  min-height: 4.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.85rem;
  padding-block: 0.4rem; /* Tippfläche auf mind. 44 px bringen */
}

/* Ventilsymbol als Wortmarke */
.brand__mark {
  width: 9px;
  height: 9px;
  flex: none;
  transform: rotate(45deg);
  background: var(--vor);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
}

.brand__name {
  font-family: var(--display);
  font-size: 0.95rem;
  font-weight: 700;
  font-stretch: 112%;
  letter-spacing: 0.01em;
  text-transform: uppercase;
}

.brand__role {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 0.5rem + 2vw, 2.5rem);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1.25rem, 0.5rem + 2vw, 2.5rem);
}

.nav__link {
  position: relative;
  display: inline-block;
  padding-block: 0.4rem;
  font-family: var(--mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  transition: color var(--dur) var(--ease);
}

.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--vor);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease);
}

.nav__link:hover {
  color: var(--text);
}

.nav__link:hover::after,
.nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.nav__link[aria-current="page"] {
  color: var(--text);
}

.header-phone {
  display: none;
  align-items: center;
  gap: 0.6rem;
  padding-inline-start: clamp(1.25rem, 0.5rem + 2vw, 2.5rem);
  border-inline-start: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color var(--dur) var(--ease);
}

.header-phone svg {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--vor);
}

.header-phone:hover {
  color: var(--vor-2);
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  margin-inline-end: -0.6rem;
  background: none;
  border: 0;
  cursor: pointer;
}

.nav-toggle__bars {
  position: relative;
  width: 1.3rem;
  height: 0.6rem;
}

.nav-toggle__bars span {
  position: absolute;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--dur) var(--ease);
}

.nav-toggle__bars span:nth-child(1) {
  top: 0;
}
.nav-toggle__bars span:nth-child(2) {
  bottom: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1) {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2) {
  bottom: auto;
  top: 50%;
  transform: translateY(-50%) rotate(-45deg);
}

@media (max-width: 63.99em) {
  .nav {
    position: fixed;
    inset: 4.5rem 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: var(--sp-4) var(--gutter) var(--sp-7);
    background: var(--ink-2);
    border-bottom: 1px solid var(--line);
    transform: translateY(-6px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
      visibility var(--dur);
  }

  .nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .nav__list li {
    border-bottom: 1px solid var(--line);
  }

  .nav__link {
    display: block;
    padding-block: 1.2rem;
    font-size: 0.8rem;
    color: var(--text);
  }

  .nav__link::after {
    display: none;
  }

  .nav__cta {
    margin-top: var(--sp-5);
  }

  .nav__cta .btn {
    width: 100%;
  }
}

@media (min-width: 64em) {
  .nav-toggle,
  .nav__cta {
    display: none;
  }

  .header-phone {
    display: inline-flex;
  }
}

body.is-nav-open {
  overflow: hidden;
}

/* ---------- 10. Hero ------------------------------------------------------ */

.hero {
  position: relative;
  border-bottom: 1px solid var(--line);
}

.hero__top {
  padding-block: clamp(2.5rem, 1.5rem + 5vw, 5.5rem) clamp(2rem, 1rem + 3vw, 3.5rem);
}

.hero__grid {
  display: grid;
  gap: clamp(2.5rem, 1rem + 6vw, 4.5rem);
  padding-block-end: clamp(2.5rem, 1.5rem + 4vw, 5rem);
}

@media (min-width: 64em) {
  .hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 4fr);
    gap: clamp(2.5rem, 1rem + 5vw, 6rem);
    align-items: start;
  }
}

.hero__title {
  margin-block-start: var(--sp-5);
  overflow-wrap: normal;
  hyphens: none;
}

.hero__title .line {
  display: block;
}

.hero__lead {
  max-width: 46ch;
}

.hero__actions {
  margin-block-start: var(--sp-7);
  align-items: center;
}

/* Kennwerte im Datenblatt-Stil */
.specs {
  display: grid;
  gap: 0;
  margin-block-start: var(--sp-8);
  border-top: 1px solid var(--line);
}

.spec {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: baseline;
  padding-block: 0.75rem;
  border-bottom: 1px solid var(--line);
}

.spec__k {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

.spec__v {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text);
}

/* Porträt mit Passermarken — die Marken sitzen am Bild, nicht am Text */
.portrait {
  margin: 0;
}

.portrait__img {
  position: relative;
  padding: 0.75rem;
}

.portrait__img::before,
.portrait__img::after {
  content: "";
  position: absolute;
  width: 1.4rem;
  height: 1.4rem;
  border: 1px solid var(--vor);
  pointer-events: none;
}

.portrait__img::before {
  top: 0;
  left: 0;
  border-right: 0;
  border-bottom: 0;
}

.portrait__img::after {
  bottom: 0;
  right: 0;
  border-left: 0;
  border-top: 0;
}

.portrait img {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  filter: grayscale(0.18) contrast(1.04);
}

.portrait figcaption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-block-start: 0.75rem;
}

/* ---------- 11. Leistungen ------------------------------------------------ */

.list {
  border-top: 1px solid var(--line);
}

.list__item {
  border-bottom: 1px solid var(--line);
}

.list__link {
  position: relative;
  display: grid;
  gap: var(--sp-3);
  padding-block: clamp(1.75rem, 1.2rem + 2vw, 2.75rem);
  transition: background var(--dur) var(--ease);
}

@media (min-width: 62em) {
  .list__link {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.3fr) auto;
    gap: clamp(2rem, 1rem + 3vw, 4rem);
    align-items: start;
  }
}

/* Der Marker liegt im Rand links neben dem Text, nicht auf der Textkante. */
.list__link::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--vor);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

.list__link:hover::before {
  transform: scaleY(1);
}

.list__link:hover {
  background: var(--ink-3);
}

.list__title {
  font-family: var(--display);
  font-size: clamp(1.3rem, 1.05rem + 1vw, 2rem);
  font-weight: 700;
  font-stretch: 108%;
  letter-spacing: -0.005em;
  line-height: 1.05;
  margin-block-start: 0.6rem;
}

.list__text {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--text-2);
  max-width: 44ch;
}

.list__arrow {
  display: none;
  align-self: center;
  color: var(--text-3);
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.list__arrow svg {
  width: 1.4rem;
  height: 1.4rem;
}

.list__link:hover .list__arrow {
  transform: translateX(5px);
  color: var(--vor);
}

@media (min-width: 62em) {
  .list__arrow {
    display: block;
  }
}

/* ---------- 12. Merkmale --------------------------------------------------- */

.marks {
  display: grid;
  border-top: 1px solid var(--line);
}

.mark {
  display: grid;
  gap: var(--sp-2);
  padding-block: var(--sp-5);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 48em) {
  .mark {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
    gap: clamp(1.5rem, 1rem + 2vw, 3rem);
    align-items: baseline;
  }
}

.mark__title {
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: -0.012em;
}

.mark__text {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--text-2);
}

/* ---------- 13. Ablauf (echte Reihenfolge, daher nummeriert) --------------- */

.steps {
  display: grid;
  border-top: 1px solid var(--line);
}

@media (min-width: 62em) {
  .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.step {
  position: relative;
  padding-block: var(--sp-6);
  border-bottom: 1px solid var(--line);
}

@media (min-width: 62em) {
  .step {
    padding-inline: clamp(1.5rem, 1rem + 2vw, 2.75rem);
    border-inline-start: 1px solid var(--line);
  }

  .step:first-child {
    padding-inline-start: 0;
    border-inline-start: 0;
  }
}

.step__n {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  font-weight: 600;
  letter-spacing: 0.16em;
  color: var(--vor);
}

.step__title {
  margin-block: var(--sp-4) var(--sp-3);
  font-family: var(--body);
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: -0.012em;
}

.step__text {
  font-size: var(--fs-sm);
  line-height: 1.55;
  color: var(--text-2);
}

/* ---------- 14. Zitat ------------------------------------------------------ */

.quote {
  margin: 0;
  max-width: 20ch;
  padding-inline-start: 1.5rem;
  border-inline-start: 2px solid var(--vor);
}

.quote blockquote {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.6rem, 1.1rem + 2.4vw, 3rem);
  font-weight: 700;
  font-stretch: 108%;
  line-height: 1;
  letter-spacing: -0.008em;
}

.quote figcaption {
  margin-block-start: var(--sp-5);
}

/* ---------- 15. Kontaktzeilen ---------------------------------------------- */

.contacts {
  border-top: 1px solid var(--line);
}

.contact {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding-block: var(--sp-5);
  border-bottom: 1px solid var(--line);
  transition: background var(--dur) var(--ease);
}

.contact::before {
  content: "";
  position: absolute;
  left: -1rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--vor);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--dur) var(--ease);
}

a.contact:hover::before {
  transform: scaleY(1);
}

a.contact:hover {
  background: var(--ink-3);
}

.contact__value {
  display: block;
  margin-block-start: 0.35rem;
  font-family: var(--mono);
  font-size: clamp(1.05rem, 0.95rem + 0.6vw, 1.45rem);
  font-weight: 600;
  letter-spacing: -0.01em;
}

.contact svg {
  width: 1.15rem;
  height: 1.15rem;
  flex: none;
  color: var(--vor);
}

/* ---------- 16. Formular ---------------------------------------------------- */

.field-grid {
  display: grid;
  gap: var(--sp-6);
}

@media (min-width: 44em) {
  .field-grid--2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-6) clamp(1.5rem, 1rem + 2vw, 2.5rem);
  }
}

.field {
  display: grid;
  gap: var(--sp-2);
}

.field__label {
  font-family: var(--mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.field__req {
  color: var(--vor);
}

.field input,
.field textarea {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.85rem 1rem;
  font-family: var(--body);
  font-size: 1.0625rem;
  color: var(--text);
  background: var(--ink-3);
  border: 1px solid var(--line);
  border-radius: 0;
  transition: border-color var(--dur) var(--ease);
}

.field textarea {
  min-height: 8rem;
  resize: vertical;
  line-height: 1.6;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #808b89;
}

.field input:hover,
.field textarea:hover {
  border-color: var(--line-2);
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--vor);
}

.field__hint {
  font-size: var(--fs-xs);
  color: var(--text-3);
}

.field__error {
  display: none;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--mono);
  font-size: var(--fs-xs);
  color: var(--vor-2);
}

.field__error svg {
  width: 0.9rem;
  height: 0.9rem;
  flex: none;
}

.field.is-invalid input,
.field.is-invalid textarea {
  border-color: var(--vor);
}

.field.is-invalid .field__error,
.consent-wrap.is-invalid .field__error {
  display: flex;
}

.field--honeypot {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}

.consent {
  display: grid;
  grid-template-columns: 1.1rem 1fr;
  gap: 0.85rem;
  align-items: start;
  font-size: var(--fs-xs);
  line-height: 1.6;
  color: var(--text-2);
}

.consent input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0.22rem 0 0;
  accent-color: var(--vor);
}

.consent a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.consent-wrap.is-invalid input[type="checkbox"] {
  outline: 2px solid var(--vor);
  outline-offset: 2px;
}

.form-status {
  display: none;
  gap: 0.7rem;
  align-items: start;
  margin-block-start: var(--sp-5);
  padding: 1rem 1.15rem;
  border-left: 2px solid currentColor;
  background: var(--ink-3);
  font-size: var(--fs-sm);
  line-height: 1.55;
}

.form-status svg {
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  margin-block-start: 0.15rem;
}

.form-status.is-visible {
  display: flex;
}

.form-status--ok {
  color: var(--ok);
}

.form-status--error {
  color: var(--vor-2);
}

.spinner {
  display: none;
  width: 1em;
  height: 1em;
  border: 2px solid rgba(14, 17, 18, 0.3);
  border-top-color: #0e1112;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

.btn.is-loading .spinner {
  display: inline-block;
}

.btn.is-loading .btn__label--idle {
  display: none;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ---------- 17. FAQ --------------------------------------------------------- */

.faq {
  border-top: 1px solid var(--line);
}

.faq__item {
  border-bottom: 1px solid var(--line);
}

.faq__q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  width: 100%;
  padding: 1.6rem 0;
  background: none;
  border: 0;
  text-align: left;
  font-family: var(--body);
  font-size: var(--fs-h3);
  font-weight: 600;
  letter-spacing: -0.012em;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.faq__q:hover {
  color: var(--vor-2);
}

.faq__q svg {
  flex: none;
  width: 1rem;
  height: 1rem;
  color: var(--vor);
  transition: transform var(--dur) var(--ease);
}

.faq__q[aria-expanded="true"] svg {
  transform: rotate(45deg);
}

.faq__a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--dur) var(--ease);
}

.faq__a > div {
  overflow: hidden;
}

.faq__a.is-open {
  grid-template-rows: 1fr;
}

.faq__a p {
  padding-block-end: 1.75rem;
  font-size: var(--fs-sm);
  line-height: 1.65;
  color: var(--text-2);
  max-width: 58ch;
}

.faq__a a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

/* ---------- 18. Rechtstexte -------------------------------------------------- */

.legal {
  max-width: 44rem;
}

.legal h2 {
  margin-block: var(--sp-8) var(--sp-4);
  padding-block-start: var(--sp-4);
  border-top: 1px solid var(--line);
  font-family: var(--body);
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.012em;
}

.legal h3 {
  margin-block: var(--sp-6) var(--sp-3);
  font-family: var(--body);
  font-size: 0.98rem;
  font-weight: 600;
}

.legal p,
.legal li,
.legal address {
  color: var(--text-2);
  font-size: var(--fs-sm);
  line-height: 1.7;
  font-style: normal;
}

.legal p + p {
  margin-block-start: var(--sp-4);
}

.legal ul {
  margin-block-start: var(--sp-3);
  display: grid;
  gap: var(--sp-2);
  padding-inline-start: 1.1rem;
  list-style: square;
}

.legal a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.legal address {
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.9;
  color: var(--text);
}

.todo {
  display: inline-block;
  padding: 0.1em 0.45em;
  background: rgba(226, 179, 61, 0.14);
  box-shadow: inset 0 0 0 1px rgba(226, 179, 61, 0.5);
  color: #e8cc86;
  font-family: var(--mono);
  font-size: 0.85em;
}

.notice {
  display: flex;
  gap: 0.85rem;
  padding: 1.1rem 1.2rem;
  background: var(--ink-3);
  border-left: 2px solid var(--vor);
  font-size: var(--fs-sm);
  line-height: 1.6;
  color: var(--text-2);
}

.notice strong {
  color: var(--text);
}

.notice svg {
  flex: none;
  width: 1.1rem;
  height: 1.1rem;
  margin-block-start: 0.2rem;
  color: var(--vor);
}

/* ---------- 19. Fusszeile ---------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--ink);
  color: var(--text-2);
  padding-block: var(--sp-9) var(--sp-6);
}

.site-footer a:hover {
  color: var(--text);
}

.footer__grid {
  display: grid;
  gap: var(--sp-7);
  padding-block-end: var(--sp-8);
}

@media (min-width: 48em) {
  .footer__grid {
    grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
    gap: clamp(1.5rem, 1rem + 2vw, 3rem);
  }
}

.footer__tagline {
  margin-block-start: var(--sp-4);
  max-width: 26ch;
  font-size: var(--fs-sm);
  line-height: 1.55;
}

.footer__title {
  margin-block-end: var(--sp-4);
  font-family: var(--mono);
  font-size: var(--fs-mono);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.footer__list {
  display: grid;
  font-size: var(--fs-sm);
}

/* Tippflächen im Footer auf 44 px bringen, statt nur Abstand zu setzen */
.footer__list a,
.footer__legal a {
  display: inline-block;
  padding-block: 0.7rem;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-6);
  align-items: center;
  justify-content: space-between;
  padding-block-start: var(--sp-5);
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: var(--fs-xs);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-5);
}

/* ---------- 20. Reveal --------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 620ms var(--ease), transform 620ms var(--ease);
  transition-delay: var(--reveal-delay, 0ms);
}

.reveal.is-visible {
  opacity: 1;
  transform: none;
}

.no-js .reveal {
  opacity: 1;
  transform: none;
}

/* ---------- 21. Hilfsklassen ----------------------------------------------------- */

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.mt-3 { margin-block-start: var(--sp-3); }
.mt-4 { margin-block-start: var(--sp-4); }
.mt-5 { margin-block-start: var(--sp-5); }
.mt-6 { margin-block-start: var(--sp-6); }
.mt-7 { margin-block-start: var(--sp-7); }
.mt-8 { margin-block-start: var(--sp-8); }
.mt-9 { margin-block-start: var(--sp-9); }

/* ---------- 22. Reduced Motion / Print -------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  .site-header,
  .site-footer,
  .spine,
  .nav-toggle {
    display: none !important;
  }

  body {
    background: #fff;
    color: #000;
  }
}