@font-face {
  font-family: 'Michroma';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('fonts/michroma.woff2') format('woff2');
}

:root {
  color-scheme: light;
  --ink: #f6f6f4; --ink-2: #ececea; --ink-3: #e2e1dd;
  --line: #d8d7d2; --line-2: #c7c6c1; --text: #14161a; --text-dim: #63666a;
  --accent: #00807d;
  --accent-bright: #02aca8;
  --accent-soft: rgba(0,128,125,0.08);
  --radius: 3px;
  --serif: ui-serif, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", Arial, sans-serif;
  --mono: "SF Mono", ui-monospace, Menlo, "Courier New", monospace;
  --ease: cubic-bezier(.16,.8,.24,1);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --ink: #1b1d20;
  --ink-2: #24272a;
  --ink-3: #2e3134;
  --line: #3a3d41;
  --line-2: #494d52;
  --text: #e8e7e4;
  --text-dim: #a3a6a8;
  --accent-bright: #1fc2bd;
  --accent-soft: rgba(2,172,168,0.18);
  --accent-fg: var(--accent-bright);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--ink); color: var(--text);
  font-family: var(--sans); line-height: 1.6; font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 { font-family: var(--sans); font-weight: 600; letter-spacing: -0.02em; text-wrap: balance; margin: 0; color: var(--text); }
p { color: var(--text-dim); margin: 0 0 1em; max-width: 62ch; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 32px; }
section { padding: 130px 0; border-bottom: 1px solid var(--line); }
section:last-of-type { border-bottom: none; }
.eyebrow {
  font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent-fg, var(--accent)); display: block; margin-bottom: 22px;
}
.center { text-align: center; }
.center p { margin-left: auto; margin-right: auto; }
h2.section-title { font-size: clamp(1.9rem, 3.6vw, 2.6rem); }

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

/* Header */
header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: color-mix(in srgb, var(--ink) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid transparent;
  transition: border-color .3s var(--ease);
}
header.scrolled { border-color: var(--line); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; padding: 20px 32px; max-width: 1180px; margin: 0 auto; }
.logo { font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; font-family: 'Michroma', sans-serif; text-transform: uppercase; -webkit-text-stroke: 1.2px currentColor; text-decoration: none; }
.logo .d { color: var(--accent) !important; font-family: var(--serif); font-style: italic; font-size: 1.2rem; -webkit-text-stroke: 0; }
nav.links { display: flex; gap: 34px; }
nav.links a { font-size: .87rem; color: var(--text-dim); transition: color .2s; }
nav.links a:hover, nav.links a.active { color: var(--text); }
.nav-right { display: flex; align-items: center; gap: 18px; }
.theme-toggle {
  width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line);
  background: transparent; color: var(--text-dim); cursor: pointer;
  display: grid; place-items: center; font-size: .9rem; transition: border-color .2s, color .2s;
}
.theme-toggle:hover { border-color: var(--text-dim); color: var(--text); }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 12px 22px;
  border-radius: 999px; font-size: .85rem; font-weight: 600; border: 1px solid var(--line);
  transition: border-color .2s var(--ease), background .2s var(--ease), color .2s var(--ease);
}
.btn-primary { background: var(--text); color: var(--ink); border-color: var(--text); }
.btn-primary:hover { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn-ghost { color: var(--text); }
.btn-ghost:hover { border-color: var(--text-dim); }
.burger { display: none; background: none; border: none; color: var(--text); font-size: 1.4rem; cursor: pointer; }
@media (max-width: 900px) {
  nav.links { display: none; }
  .burger { display: block; }
  nav.links a { font-size: 1.05rem; text-align: center; padding: 6px 0; }
}

/* Sub-page hero (shorter, no canvas) */
.page-hero { padding: 170px 0 80px; border-bottom: 1px solid var(--line); }
.breadcrumb { font-family: var(--mono); font-size: .74rem; color: var(--text-dim); margin-bottom: 22px; }
.breadcrumb a:hover { color: var(--accent-fg, var(--accent)); }
.page-hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); max-width: 18ch; margin-bottom: 22px; }
.page-hero .lede { font-size: 1.1rem; max-width: 60ch; }

/* Hero (homepage) */
.hero {
  position: relative; min-height: 100vh; display: flex; align-items: flex-end;
  padding: 160px 0 90px; overflow: hidden; border-bottom: 1px solid var(--line);
}
.hero-canvas { position: absolute; inset: 0; z-index: 0; }
.hero-canvas canvas { width: 100%; height: 100%; display: block; }
.hero-veil {
  position: absolute; inset: 0; z-index: 1;
  background: linear-gradient(180deg, color-mix(in srgb, var(--ink) 4%, transparent) 0%, color-mix(in srgb, var(--ink) 20%, transparent) 48%, color-mix(in srgb, var(--ink) 58%, transparent) 70%, color-mix(in srgb, var(--ink) 97%, transparent) 90%);
}
.hero-content { position: relative; z-index: 2; width: 100%; }
.hero-grid { display: grid; grid-template-columns: 1.3fr .7fr; gap: 60px; align-items: end; }
@media (max-width: 900px) { .hero-grid { grid-template-columns: 1fr; } }
.hero h1 { font-size: clamp(2.6rem, 5.6vw, 4.6rem); line-height: 1.04; margin-bottom: 28px; }
.hero h1 em { font-style: normal; color: var(--accent); }
.hero .lede { font-size: 1.15rem; max-width: 46ch; margin-bottom: 36px; }
.hero .actions { display: flex; gap: 16px; flex-wrap: wrap; }
.hero-meta { display: flex; flex-direction: column; gap: 22px; padding-bottom: 6px; }
.hero-meta .row { border-top: 1px solid var(--line); padding-top: 14px; }
.hero-meta .row .k { font-family: var(--mono); font-size: .7rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .08em; display: block; margin-bottom: 6px; }
.hero-meta .row .v { font-size: .96rem; color: var(--text); }
.scroll-cue {
  position: absolute; bottom: 28px; left: 32px; z-index: 2; display: flex; align-items: center; gap: 10px;
  font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--text-dim);
}
.scroll-cue .line { width: 34px; height: 1px; background: var(--text-dim); position: relative; overflow: hidden; }
.scroll-cue .line::after { content: ""; position: absolute; inset: 0; background: var(--accent); animation: sweep 2.6s ease-in-out infinite; }
@keyframes sweep { 0% { transform: translateX(-100%); } 50% { transform: translateX(0); } 100% { transform: translateX(100%); } }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .8s var(--ease), transform .8s var(--ease); }
.reveal.in { opacity: 1; transform: translateY(0); }

/* Thesis / problem section */
.thesis-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 40px; margin-top: 50px; }
@media (max-width: 900px) { .thesis-grid { grid-template-columns: 1fr; } }
.thesis-item { border-top: 1px solid var(--line); padding-top: 24px; }
.thesis-item .role { font-family: var(--mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent-fg, var(--accent)); margin-bottom: 12px; display: block; }
.thesis-item h3 { font-size: 1.1rem; margin-bottom: 10px; font-weight: 600; }
.thesis-item p { font-size: .92rem; }

/* Delta-E precision section */
.precision { background: var(--ink-2); }
.precision-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; }
@media (max-width: 900px) { .precision-grid { grid-template-columns: 1fr; gap: 50px; } }
.precision-instrument {
  aspect-ratio: 1/1; border: 1px solid var(--line); border-radius: 50%;
  display: grid; place-items: center; position: relative; max-width: 380px; margin: 0 auto;
  background: #3a4045; box-shadow: 0 40px 70px -42px rgba(0,0,0,.55);
}
.precision-instrument .instrument-inner {
  position: relative; width: 72%; aspect-ratio: 1/1; border-radius: 50%;
  background: #5b636b; display: grid; place-items: center;
  transition: background .1s linear;
}
.precision-instrument .readout { text-align: center; }
.precision-instrument .readout .val { font-family: var(--mono); font-size: 2.6rem; color: #f5f5f3; font-variant-numeric: tabular-nums; }
.precision-instrument .readout .val .unit { color: var(--accent); }
.precision-instrument .readout .cap { font-family: var(--mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: rgba(245,245,243,.6); margin-top: 8px; }
.de-legend { display: flex; flex-direction: column; gap: 8px; align-items: center; margin-top: 24px; font-family: var(--mono); font-size: .72rem; color: var(--text-dim); }
.de-legend span { display: flex; align-items: center; gap: 8px; }
.de-legend .dot { width: 10px; height: 10px; border-radius: 50%; flex: 0 0 auto; border: 1px solid var(--line-2); }
.de-legend .dot.outer { background: #3a4045; }
.de-legend .dot.inner { background: #5b636b; transition: background .1s linear; }

/* Leistungen */
.service-list { margin-top: 50px; border-top: 1px solid var(--line); }
.service-row {
  display: grid; grid-template-columns: 220px 1fr 90px; gap: 30px; align-items: baseline;
  padding: 26px 0; border-bottom: 1px solid var(--line); transition: padding-left .25s var(--ease);
}
.service-row:hover { padding-left: 10px; }
.service-row h3 { font-size: 1.1rem; font-weight: 600; }
.service-row p { font-size: .9rem; margin: 0; max-width: 56ch; }
.service-row .idx { font-family: var(--mono); font-size: .78rem; color: var(--text-dim); text-align: right; }
.service-row a.more { font-size: .78rem; color: var(--accent-fg, var(--accent)); white-space: nowrap; }
@media (max-width: 760px) {
  .service-row { grid-template-columns: 1fr; gap: 6px; }
  .service-row .idx { display: none; }
}
.material-note { margin-top: 30px; font-size: .9rem; }
.material-note b { color: var(--text); font-weight: 600; }

/* Process */
.process { background: var(--ink-2); }
.process-list { margin-top: 56px; display: grid; gap: 0; }
.process-row { display: grid; grid-template-columns: 70px 1fr 1fr; gap: 30px; padding: 30px 0; border-top: 1px solid var(--line); }
.process-row:last-child { border-bottom: 1px solid var(--line); }
.process-row .num { font-family: var(--mono); font-size: 1rem; color: var(--accent-fg, var(--accent)); }
.process-row h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 6px; }
.process-row p { font-size: .88rem; margin: 0; }
.process-row .tag { font-family: var(--mono); font-size: .7rem; color: var(--text-dim); align-self: center; text-align: right; text-transform: uppercase; letter-spacing: .06em; }
@media (max-width: 760px) {
  .process-row { grid-template-columns: 40px 1fr; }
  .process-row .tag { display: none; }
}

/* Advantage */
.adv-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line); margin-top: 50px; border: 1px solid var(--line); }
.adv-grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .adv-grid-3 { grid-template-columns: 1fr 1fr; } }
@media (max-width: 760px) { .adv-grid, .adv-grid-3 { grid-template-columns: 1fr; } }
.adv-item { background: var(--ink); padding: 34px; }
.adv-item h3 { font-size: 1.02rem; font-weight: 600; margin-bottom: 10px; }
.adv-item p { font-size: .9rem; margin: 0; }

/* ===== Ergebnis / Vorher-Nachher (echte Fotos) ===== */
.cmp { display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(34px,5vw,80px); align-items: center; }
@media (max-width: 900px) { .cmp { grid-template-columns: 1fr; } .cmp .txt { order: -1; } }
.ba {
  position: relative; aspect-ratio: 5/4; border-radius: 4px; overflow: hidden; user-select: none;
  touch-action: none; cursor: ew-resize; border: 1px solid var(--line); box-shadow: 0 50px 80px -40px rgba(0,0,0,.6);
}
.ba .surf {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
}
.ba .surf-after { background-image: url('img/trapezblech-nachher.jpg'); }
.ba .surf-before { background-image: url('img/trapezblech-vorher.jpg'); clip-path: inset(0 50% 0 0); }
.ba .hd { position: absolute; top: 0; bottom: 0; left: 50%; width: 2px; background: var(--accent); transform: translateX(-50%); z-index: 3; box-shadow: 0 0 16px var(--accent); }
.ba .hd .grip {
  position: absolute; top: 50%; left: 50%; transform: translate(-50%,-50%); width: 44px; height: 44px; border-radius: 50%;
  background: var(--accent); display: flex; align-items: center; justify-content: center; color: #fff; font-family: var(--mono); font-size: 14px;
}
.ba .lbl {
  position: absolute; top: 16px; font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  background: rgba(0,0,0,.55); color: #fff; border: 1px solid var(--line-2); padding: 6px 10px; border-radius: 2px; z-index: 4;
}
.ba .lbl.l { left: 16px; } .ba .lbl.r { right: 16px; }
.ba input { position: absolute; inset: 0; width: 100%; height: 100%; opacity: 0; cursor: ew-resize; margin: 0; z-index: 5; pointer-events: none; }
.chk { display: grid; gap: 12px; margin-top: 20px; }
.chk > div { display: flex; align-items: center; gap: 12px; font-size: .92rem; color: var(--text); }
.chk svg { color: var(--accent); flex-shrink: 0; }

/* ===== Geo-Map (1:1 übernommen, umgefärbt auf neue Palette) ===== */
.geo-map { max-width: 660px; margin: 34px auto 10px; aspect-ratio: 620/520; }
.geo-map svg { width: 100%; height: 100%; display: block; overflow: visible; }
.geo-sea { fill: #dbe4ea; }
:root[data-theme="dark"] .geo-sea { fill: #1b2124; }
.geo-grid-dot { fill: var(--line); }
.geo-compass-mark { stroke: var(--text-dim); fill: var(--text-dim); }
.geo-coast { fill: none; stroke: #616b70; stroke-width: 1.2; stroke-linejoin: round; stroke-linecap: round; }
.geo-a1 { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; opacity: .85; }
.geo-a1-label { font-family: var(--mono); font-size: 10px; fill: var(--accent-fg, var(--accent)); letter-spacing: .15em; opacity: .85; }
.geo-connector { stroke: var(--accent); stroke-width: 1; stroke-dasharray: 2 4; opacity: .45; }
.geo-city-dot { fill: var(--ink-2); stroke: var(--text-dim); stroke-width: 1.5; }
.geo-city-label { font-family: var(--mono); font-size: 12px; fill: var(--text-dim); letter-spacing: .02em; }
.geo-hub-glow { fill: url(#hubGlow); }
.geo-hub-dot { fill: var(--accent); }
.geo-hub-pulse { fill: none; stroke: var(--accent); stroke-width: 2; transform-box: fill-box; transform-origin: center; animation: geopulse 2.6s ease-out infinite; }
.geo-hub-label { font-family: var(--mono); font-size: 14px; font-weight: 700; fill: #fff; letter-spacing: .05em; }
.geo-sea-label { font-family: var(--mono); font-size: 11px; fill: #4d585d; letter-spacing: .22em; }
.geo-compass-label { font-family: var(--mono); font-size: 10px; fill: var(--text-dim); }
.geo-city-link { cursor: pointer; }
/* unsichtbare Trefferfläche: hebt den Tap-Target auf >= 24px (WCAG 2.5.8) */
.geo-hit { fill: transparent; }
.geo-city-link .geo-city-dot { transition: r .15s ease, fill .15s ease; }
.geo-city-link .geo-city-label { transition: fill .15s ease; }
.geo-city-link:hover .geo-city-dot { r: 6; fill: var(--accent); stroke: var(--accent); }
.geo-city-link:hover .geo-city-label { fill: var(--accent); font-weight: 700; }
@keyframes geopulse { 0% { transform: scale(1); opacity: .6; } 100% { transform: scale(3.4); opacity: 0; } }
@media (prefers-reduced-motion: reduce) { .geo-hub-pulse { animation: none; opacity: 0; } }
@media (max-width: 560px) { .geo-city-label, .geo-hub-label { font-size: 14px; } .geo-sea-label { font-size: 13px; } }

.cities { display: flex; flex-wrap: wrap; gap: 10px; }
.cities span { font-family: var(--mono); font-size: 13.5px; color: var(--text); background: var(--ink-2); border: 1px solid var(--line); border-radius: 30px; padding: 9px 18px; }
.cities-note { margin-top: 18px; font-size: 14.5px; color: var(--text-dim); max-width: 70ch; }

.sectors { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
@media (max-width: 900px) { .sectors { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .sectors { grid-template-columns: 1fr; } }
.sector { border: 1px solid var(--line); border-radius: 4px; padding: 30px 26px; transition: background .35s, border-color .35s, transform .35s; }
.sector:hover { background: var(--ink-2); border-color: var(--line-2); transform: translateY(-4px); }
.sector .n { font-family: var(--mono); font-size: 12px; color: var(--accent-fg, var(--accent)); margin-bottom: 16px; }
.sector h3 { font-size: 18px; margin-bottom: 8px; }
.sector p { font-size: 14px; color: var(--text-dim); }

/* ===== 3D Panel exploded view (used on /wissen/ subpage) ===== */
.thesis-big { font-size: clamp(1.6rem,3.2vw,2.4rem); font-weight: 600; letter-spacing: -.01em; max-width: 24ch; margin-bottom: 10px; }
.thesis-big .dim { color: var(--text-dim); font-weight: 500; }
.thesis-big .accent { color: var(--accent); }
.thesis-row { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; align-items: center; margin-top: 60px; }
.thesis-row-asym { grid-template-columns: .9fr 1.1fr; }
@media (max-width: 900px) { .thesis-row, .thesis-row-asym { grid-template-columns: 1fr; gap: 40px; } }
.p3-scene { perspective: 1100px; display: flex; flex-direction: column; align-items: center; gap: clamp(70px,9vw,100px); padding-top: 20px; }
.p3-obj {
  position: relative; width: min(320px,68vw); height: 210px; transform-style: preserve-3d;
  transform: rotateX(58deg) rotateZ(-38deg); animation: p3sway 10s ease-in-out infinite;
}
@keyframes p3sway { 0%,100% { transform: rotateX(58deg) rotateZ(-38deg); } 50% { transform: rotateX(55deg) rotateZ(-34deg); } }
@media (prefers-reduced-motion: reduce) { .p3-obj { animation: none; } }
.p3l { position: absolute; left: 50%; top: 50%; width: 100%; height: 170px; margin: -85px 0 0 -50%; transform-style: preserve-3d; transform: translateZ(var(--tz,0px)); }
.p3l.a { --tz: 105px; background: repeating-linear-gradient(90deg,transparent 0 46px,rgba(0,0,0,.45) 48px,rgba(255,255,255,.10) 50px,transparent 52px),linear-gradient(150deg,#464e55,#383e42); }
.p3l.a::before { --th: 5px; background: #1f2529; }
.p3l.a::after { --th: 5px; background: #262c31; }
.p3l.c { --tz: 0px; background: linear-gradient(150deg,#eee2a9,#ddcd8d); }
.p3l.c::before { --th: 14px; background: linear-gradient(#c9b87e,#b6a56c); }
.p3l.c::after { --th: 14px; background: linear-gradient(#d8c98a,#c2b06e); }
.p3l.b { --tz: -90px; background: repeating-linear-gradient(90deg,#f0f2f3 0 7px,#c6cbcf 7px 13px,#8f959a 13px 19px,#d6d9db 19px 32px); }
.p3l.b::before { --th: 5px; background: #9aa0a4; }
.p3l.b::after { --th: 5px; background: #a7abac; }
.p3l::before { content: ""; position: absolute; left: 0; right: 0; top: 100%; height: var(--th,8px); transform-origin: top; transform: rotateX(-90deg); background: rgba(0,0,0,.5); }
.p3l::after { content: ""; position: absolute; top: 0; bottom: 0; left: 100%; width: var(--th,8px); transform-origin: left; transform: rotateY(90deg); background: rgba(0,0,0,.42); }
.p3-dot { position: absolute; top: 32%; left: 58%; width: 12px; height: 12px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 0 6px var(--accent-soft); transform: translateZ(2px); }
.p3-legend { display: flex; flex-direction: column; gap: 9px; font-size: 14px; color: var(--text-dim); }
.p3-legend span { display: flex; align-items: center; gap: 11px; }
.p3-legend i { width: 15px; height: 15px; border-radius: 3px; flex: 0 0 auto; border: 1px solid var(--line-2); }
.p3-legend .rd { width: 11px; height: 11px; border-radius: 50%; background: var(--accent); border: 0; box-shadow: 0 0 0 4px var(--accent-soft); }
.p3-legend b { color: var(--text); font-weight: 600; }
@media (max-width: 900px) { .p3-obj { height: 180px; } .p3l { height: 145px; margin-top: -72px; } }

/* Coverage secondary list (used alongside map) */
.city-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; border-top: 1px solid var(--line); }
.city-list li { display: flex; justify-content: space-between; padding: 12px 0; border-bottom: 1px solid var(--line); font-size: .9rem; }
.city-list li span:last-child { color: var(--text-dim); font-family: var(--mono); font-size: .78rem; }

/* FAQ */
/* Aufzaehlungen im Fliesstext (Wissensartikel) */
.prose-list { list-style: none; margin: 18px 0; padding: 0; display: grid; gap: 14px; max-width: 70ch; }
.prose-list li { padding-left: 24px; position: relative; font-size: .95rem; color: var(--text-dim); line-height: 1.6; }
.prose-list li::before { content: "—"; position: absolute; left: 0; top: 0; color: var(--accent-fg, var(--accent)); font-family: var(--mono); }
.prose-list li b { color: var(--text); font-weight: 600; }
.prose-list.numbered { counter-reset: pl; }
.prose-list.numbered li { counter-increment: pl; }
.prose-list.numbered li::before { content: counter(pl) "."; font-family: var(--mono); }
.callout { font-size: .82rem; color: var(--text-dim); background: var(--ink-2); border-radius: var(--radius); padding: 14px 18px; margin: 22px 0; max-width: 70ch; border-left: 2px solid var(--accent); }

/* Kurzantwort direkt unter der H1 — fuer Mensch und KI-Suche eigenstaendig lesbar */
.article-summary { font-size: 1.05rem; line-height: 1.6; color: var(--text); background: var(--ink-2); border-left: 3px solid var(--accent); border-radius: var(--radius); padding: 18px 22px; margin: 24px 0 8px; max-width: 70ch; }

.faq-list { margin-top: 40px; border-top: 1px solid var(--line); }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item summary { cursor: pointer; list-style: none; display: flex; justify-content: space-between; align-items: center; padding: 24px 0; font-size: 1.02rem; font-weight: 600; color: var(--text); gap: 20px; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-family: var(--mono); font-size: 1.3rem; color: var(--accent-fg, var(--accent)); font-weight: 400; flex-shrink: 0; }
.faq-item[open] summary::after { content: "–"; }
.faq-item .a { padding-bottom: 26px; font-size: .92rem; max-width: 68ch; }

/* Contact */
.contact { background: var(--ink-2); }
.contact-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 70px; margin-top: 50px; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; gap: 40px; } }
.contact-info dl { display: grid; gap: 22px; margin: 0; }
.contact-info dt { font-family: var(--mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .08em; color: var(--text-dim); margin-bottom: 6px; }
.contact-info dd { margin: 0; font-size: 1rem; color: var(--text); }
.contact-info dd a { border-bottom: 1px solid var(--line); display: inline-flex; align-items: center; min-height: 24px; }
.note a { display: inline-flex; align-items: center; min-height: 24px; }
.contact-info dd a:hover { border-color: var(--accent); color: var(--accent-fg, var(--accent)); }

form.lead-form { display: grid; gap: 18px; }
/* Honeypot: aus dem Sichtfeld geschoben statt display:none — einfache Bots
   fuellen es trotzdem aus, Screenreader ueberspringen es per aria-hidden. */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-family: var(--mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-dim); }
.field input, .field select, .field textarea {
  background: transparent; border: none; border-bottom: 1px solid var(--line); color: var(--text);
  padding: 10px 2px; font-family: var(--sans); font-size: .96rem; transition: border-color .2s;
}
.field input:focus, .field select:focus, .field textarea:focus { outline: none; border-color: var(--accent); }
.field textarea { resize: vertical; min-height: 90px; }
.field input[type="file"] { border: 1px dashed var(--line); padding: 14px 10px; font-size: .86rem; cursor: pointer; }
.field input[type="file"]::file-selector-button {
  background: var(--ink-2); color: var(--text); border: 1px solid var(--line); border-radius: 999px;
  padding: 6px 14px; margin-right: 12px; font-family: var(--sans); font-size: .8rem; cursor: pointer;
}
.field-hint { font-size: .74rem; color: var(--text-dim); margin: 0; }
.field-check { display: flex; flex-direction: row; align-items: flex-start; gap: 10px; }
.field-check input[type="checkbox"] {
  width: 18px; height: 18px; flex: 0 0 auto; margin-top: 2px; accent-color: var(--accent);
}
.field-check label {
  text-transform: none; font-family: var(--sans); font-size: .85rem; letter-spacing: normal;
  color: var(--text); font-weight: 400;
}
.field-check label a { color: var(--accent-fg, var(--accent)); border-bottom: 1px solid currentColor; }
.note { font-size: .78rem; color: var(--text-dim); background: var(--ink-3); border-radius: var(--radius); padding: 10px 14px; margin-top: 4px; }

.wa-float {
  position: fixed; bottom: 26px; right: 26px; z-index: 200; width: 54px; height: 54px; border-radius: 50%;
  background: var(--accent); color: #fff; display: grid; place-items: center; font-size: 1.4rem;
  box-shadow: 0 12px 28px rgba(0,0,0,0.35); transition: transform .2s var(--ease);
}
.wa-float:hover { transform: scale(1.06); }

footer.site-footer { padding: 60px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-grid .footer-head { font-size: .78rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-dim); margin: 0 0 16px; font-weight: 600; max-width: none; }
.footer-grid ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
/* min. 24px Trefferfläche (WCAG 2.5.8 / Google Mobile Usability) */
.footer-grid a { font-size: .88rem; color: var(--text-dim); display: inline-flex; align-items: center; min-height: 24px; padding: 2px 0; }
.footer-grid a:hover { color: var(--text); }
.footer-bottom { border-top: 1px solid var(--line); margin-top: 40px; padding-top: 20px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; font-size: .78rem; color: var(--text-dim); }
.footer-bottom a { display: inline-flex; align-items: center; min-height: 24px; }

@media (prefers-reduced-motion: reduce) {
  .reveal { transition: none; opacity: 1; transform: none; }
  .scroll-cue .line::after { animation: none; }
}

/* Corrosivity indicator (city pages) */
.corrosivity { display: flex; align-items: center; gap: 18px; margin: 26px 0; }
.corrosivity .scale { display: flex; gap: 3px; }
.corrosivity .scale i { width: 22px; height: 10px; border-radius: 2px; background: var(--line); }
.corrosivity .scale i.on { background: var(--accent); }
.corrosivity .label { font-family: var(--mono); font-size: .76rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .06em; }
.corrosivity .label b { color: var(--text); font-weight: 700; }

.city-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; margin-top: 44px; }
@media (max-width: 900px) { .city-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .city-grid { grid-template-columns: 1fr; } }
.city-card { border: 1px solid var(--line); border-radius: 4px; padding: 26px; transition: background .3s, border-color .3s, transform .3s; display: block; }
.city-card:hover { background: var(--ink-2); border-color: var(--line-2); transform: translateY(-4px); }
.city-card .dist { font-family: var(--mono); font-size: .7rem; color: var(--text-dim); margin-bottom: 10px; }
.city-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.city-card p { font-size: .86rem; margin: 0; }
.city-card .cat { display: inline-block; margin-top: 12px; font-family: var(--mono); font-size: .68rem; color: var(--accent-fg, var(--accent)); border: 1px solid var(--accent); border-radius: 999px; padding: 3px 10px; }