:root {
  --navy-950: #062538;
  --navy-900: #0a3046;
  --navy-800: #123f58;
  --navy-700: #215a73;
  --ink: #102d3d;
  --text: #274451;
  --muted: #667b85;
  --green: #12a45c;
  --green-dark: #0b7b45;
  --green-soft: #e9f8f0;
  --red: #d83d32;
  --orange: #ef7d36;
  --red-soft: #fff1ed;
  --cyan: #3d9fbd;
  --cyan-soft: #ebf7fb;
  --paper: #f6f9fa;
  --paper-2: #eef4f6;
  --white: #ffffff;
  --line: #dce7eb;
  --shadow-sm: 0 12px 34px rgba(10, 48, 70, .08);
  --shadow-md: 0 24px 72px rgba(10, 48, 70, .13);
  --shadow-lg: 0 38px 110px rgba(10, 48, 70, .18);
  --radius-sm: 14px;
  --radius: 24px;
  --radius-lg: 36px;
  --container: 1260px;
  --header: 82px;
  --ease: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background: var(--paper);
  font-family: Inter, Aptos, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body.nav-open { overflow: hidden; }
img, svg, picture { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 9999;
  padding: 10px 14px;
  border-radius: 8px;
  color: #fff;
  background: var(--navy-950);
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.container { width: min(calc(100% - 48px), var(--container)); margin-inline: auto; }
.narrow { width: min(calc(100% - 48px), 860px); margin-inline: auto; }
.section { position: relative; padding: 116px 0; }
.section-tight { padding: 78px 0; }
.section-white { background: var(--white); }
.section-soft { background: linear-gradient(180deg, #f4f8f9 0%, #edf4f6 100%); }
.section-green { background: linear-gradient(135deg, #edf9f3 0%, #f7fbfa 66%, #edf7fb 100%); }
.section-red { background: linear-gradient(135deg, #fff5f1 0%, #fff 58%, #f3f8fa 100%); }
.section-navy { color: #fff; background: var(--navy-950); }

h1, h2, h3, h4, p { margin-top: 0; }
h1, h2, h3, h4 {
  color: var(--ink);
  font-weight: 780;
  line-height: 1.04;
  letter-spacing: -.035em;
}
h1 { font-size: clamp(3.4rem, 6.7vw, 6.65rem); margin-bottom: 30px; }
h2 { font-size: clamp(2.45rem, 4.6vw, 4.85rem); margin-bottom: 28px; }
h3 { font-size: clamp(1.45rem, 2.1vw, 2.15rem); margin-bottom: 15px; }
h4 { font-size: 1.15rem; margin-bottom: 8px; }
p { margin-bottom: 22px; }
.lead { font-size: clamp(1.13rem, 1.55vw, 1.38rem); line-height: 1.58; color: var(--muted); }
.big-copy { font-size: clamp(1.55rem, 2.65vw, 2.45rem); line-height: 1.35; letter-spacing: -.025em; color: var(--ink); }
.small { font-size: .91rem; }
.muted { color: var(--muted); }
.text-balance { text-wrap: balance; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  color: var(--navy-700);
  font-size: .77rem;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 28px; height: 2px; border-radius: 99px; background: var(--green); }
.eyebrow-red { color: #9a3028; }
.eyebrow-red::before { background: var(--red); }
.eyebrow-cyan::before { background: var(--cyan); }
.eyebrow-light { color: rgba(255,255,255,.74); }
.eyebrow-light::before { background: #5fd98e; }

.actions { display: flex; flex-wrap: wrap; gap: 12px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 54px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .94rem;
  font-weight: 800;
  line-height: 1;
  transition: transform .25s var(--ease), box-shadow .25s var(--ease), background .25s ease, color .25s ease, border-color .25s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { color: #fff; background: var(--green); box-shadow: 0 13px 30px rgba(18, 164, 92, .22); }
.btn-primary:hover { background: #0d944f; box-shadow: 0 18px 42px rgba(18, 164, 92, .30); }
.btn-navy { color: #fff; background: var(--navy-900); box-shadow: 0 13px 30px rgba(6, 37, 56, .18); }
.btn-navy:hover { background: var(--navy-950); }
.btn-light { color: var(--navy-900); background: #fff; box-shadow: var(--shadow-sm); }
.btn-outline { color: var(--navy-900); border-color: #c5d5dc; background: rgba(255,255,255,.7); }
.btn-outline:hover { border-color: var(--navy-900); background: #fff; }
.btn-arrow::after { content: "↗"; font-size: 1.08em; }
.text-link { display: inline-flex; align-items: center; gap: 9px; color: var(--navy-900); font-weight: 800; }
.text-link::after { content: "→"; transition: transform .22s ease; }
.text-link:hover::after { transform: translateX(5px); }

/* Announcement and navigation */
.announcement {
  min-height: 36px;
  display: grid;
  place-items: center;
  padding: 7px 16px;
  color: var(--navy-900);
  background: linear-gradient(90deg, #e8f9ef, #eef8fb 58%, #fff2ed);
  border-bottom: 1px solid rgba(18, 63, 88, .08);
  font-size: .78rem;
  font-weight: 750;
  letter-spacing: .015em;
  text-align: center;
}
.announcement a { display: inline-flex; align-items: center; gap: 9px; }
.announcement .pulse { width: 8px; height: 8px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 7px rgba(18,164,92,.10); }
.announcement strong { color: var(--green-dark); }

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header);
  display: flex;
  align-items: center;
  background: rgba(255,255,255,.94);
  border-bottom: 1px solid rgba(18,63,88,.08);
  backdrop-filter: blur(18px);
  transition: height .25s ease, box-shadow .25s ease;
}
.site-header.scrolled { height: 72px; box-shadow: 0 10px 30px rgba(10,48,70,.09); }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: flex; align-items: center; gap: 12px; flex: 0 0 auto; }
.brand img { width: 48px; height: 48px; }
.brand-copy { display: grid; color: var(--navy-900); line-height: 1; }
.brand-copy strong { font-size: 1.08rem; letter-spacing: .12em; }
.brand-copy span { margin-top: 7px; color: var(--muted); font-size: .62rem; letter-spacing: .22em; text-transform: uppercase; }
.main-nav { display: flex; align-items: center; gap: 24px; }
.main-nav a:not(.btn) {
  position: relative;
  padding: 11px 0;
  color: #385460;
  font-size: .88rem;
  font-weight: 750;
}
.main-nav a:not(.btn)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 5px;
  width: 100%;
  height: 2px;
  border-radius: 99px;
  background: var(--green);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s var(--ease);
}
.main-nav a:not(.btn):hover::after,
.main-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.main-nav a[aria-current="page"] { color: var(--navy-900); }
.main-nav .btn[aria-current="page"] { color: #fff; }
.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--navy-900);
  background: #fff;
}
.menu-toggle span { display: block; width: 19px; height: 2px; margin: 5px auto; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.nav-open .menu-toggle span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-open .menu-toggle span:nth-child(2) { opacity: 0; }
.nav-open .menu-toggle span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Home hero */
.home-hero {
  position: relative;
  overflow: hidden;
  padding: 92px 0 76px;
  background:
    radial-gradient(circle at 10% 15%, rgba(61,159,189,.13), transparent 30%),
    radial-gradient(circle at 88% 10%, rgba(18,164,92,.12), transparent 29%),
    linear-gradient(180deg, #fbfdfd 0%, #f3f8f9 100%);
}
.home-hero::before {
  content: "";
  position: absolute;
  inset: auto -150px -280px 30%;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(18,164,92,.09), transparent 68%);
  pointer-events: none;
}
.home-grid { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) minmax(450px, .92fr); align-items: center; gap: 82px; }
.home-copy { max-width: 730px; }
.home-copy h1 { max-width: 820px; }
.home-copy .lead { max-width: 700px; margin-bottom: 34px; }
.hero-meta { display: flex; flex-wrap: wrap; gap: 10px 20px; margin-top: 28px; color: var(--muted); font-size: .85rem; font-weight: 700; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta span::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--green); }
.visual-stage { position: relative; min-height: 610px; }
.visual-frame {
  position: absolute;
  inset: 34px 0 0 56px;
  overflow: hidden;
  border-radius: 38px;
  background: #dfeaed;
  box-shadow: var(--shadow-lg);
}
.visual-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(255,255,255,.02), rgba(6,37,56,.16));
}
.visual-frame picture, .visual-frame img { width: 100%; height: 100%; }
.visual-frame img { object-fit: cover; object-position: center; }
.floating-card {
  position: absolute;
  z-index: 2;
  border: 1px solid rgba(255,255,255,.75);
  border-radius: 20px;
  background: rgba(255,255,255,.92);
  box-shadow: 0 22px 60px rgba(10,48,70,.18);
  backdrop-filter: blur(14px);
}
.patent-float { top: 0; left: 0; width: 260px; padding: 22px; }
.patent-float small { display: block; color: var(--green-dark); font-size: .72rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.patent-float strong { display: block; margin: 5px 0 2px; color: var(--ink); font-size: 1.65rem; line-height: 1.1; }
.patent-float span { color: var(--muted); font-size: .82rem; }
.chart-float { right: -18px; bottom: 38px; width: 330px; padding: 20px 20px 16px; }
.chart-head { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 8px; color: var(--ink); font-size: .8rem; font-weight: 800; }
.live-pill { display: inline-flex; align-items: center; gap: 6px; color: var(--green-dark); font-weight: 800; }
.live-pill::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 5px rgba(18,164,92,.1); }
.data-pill { left: 28px; bottom: 30px; padding: 12px 17px; color: var(--navy-900); font-size: .78rem; font-weight: 800; letter-spacing: .02em; }

.capability-strip { background: #fff; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.capability-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.capability-item { min-height: 98px; display: flex; align-items: center; gap: 15px; padding: 24px 28px; border-right: 1px solid var(--line); }
.capability-item:last-child { border-right: 0; }
.capability-icon { width: 38px; height: 38px; display: grid; place-items: center; flex: 0 0 auto; border-radius: 12px; color: var(--navy-900); background: var(--paper-2); font-size: .86rem; font-weight: 900; }
.capability-item strong { display: block; color: var(--ink); font-size: .93rem; }
.capability-item span { display: block; color: var(--muted); font-size: .77rem; }

/* General content layouts */
.statement-grid { display: grid; grid-template-columns: minmax(0, .82fr) minmax(0, 1.18fr); gap: 100px; align-items: start; }
.sticky { position: sticky; top: 120px; }
.divider { width: 100%; height: 1px; margin: 34px 0; background: var(--line); }
.intro-note { display: flex; gap: 14px; align-items: flex-start; padding: 20px 22px; border-radius: var(--radius-sm); color: #31515e; background: #eef7f9; border-left: 4px solid var(--cyan); }
.intro-note strong { color: var(--ink); }

.section-head { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .65fr); gap: 70px; align-items: end; margin-bottom: 55px; }
.section-head p { margin-bottom: 6px; }

.solution-list { display: grid; gap: 28px; }
.solution-card {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(430px, .9fr);
  min-height: 580px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.solution-card.reverse { grid-template-columns: minmax(430px, .9fr) minmax(0, 1fr); }
.solution-card.reverse .solution-media { order: -1; }
.solution-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 5px; background: var(--green); }
.solution-card.furnace::before { background: linear-gradient(var(--red), var(--orange)); }
.solution-card.filter::before { background: var(--cyan); }
.solution-copy { display: flex; flex-direction: column; justify-content: center; padding: 66px 68px; }
.solution-copy .lead { font-size: 1.08rem; }
.solution-copy .text-link { margin-top: 12px; }
.solution-media { position: relative; min-height: 520px; overflow: hidden; background: var(--paper-2); }
.solution-media picture, .solution-media img { width: 100%; height: 100%; }
.solution-media img { object-fit: cover; transition: transform .75s var(--ease); }
.solution-card:hover .solution-media img { transform: scale(1.025); }
.solution-media::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 55%, rgba(6,37,56,.19)); }
.solution-tag { display: inline-flex; align-items: center; gap: 8px; width: fit-content; margin-bottom: 22px; padding: 8px 11px; border-radius: 999px; color: var(--green-dark); background: var(--green-soft); font-size: .73rem; font-weight: 850; letter-spacing: .09em; text-transform: uppercase; }
.furnace .solution-tag { color: #9d3028; background: var(--red-soft); }
.filter .solution-tag { color: #286b80; background: var(--cyan-soft); }
.micro-list { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 16px; }
.micro-list span { padding: 7px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .74rem; font-weight: 750; background: #fbfdfd; }

.filter-teaser { display: grid; grid-template-columns: 1.25fr .75fr; gap: 28px; margin-top: 28px; }
.filter-copy, .filter-visual { min-height: 340px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.filter-copy { padding: 54px; }
.filter-visual { display: grid; place-items: center; padding: 42px; background: linear-gradient(135deg, #eef7fa, #fff); }
.filter-visual img { max-height: 260px; }
.filter-visual-photo { padding: 0; overflow: hidden; background: linear-gradient(135deg, #edf6fa, #ffffff); }
.filter-visual-photo picture { display:block; width:100%; height:100%; }
.filter-visual-photo img { display:block; width:100%; height:100%; object-fit:cover; max-height:none; }


/* Patent block */
.patent-wrap {
  position: relative;
  overflow: hidden;
  border: 1px solid #cfe8da;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, #e8f8ef 0%, #f8fcfa 56%, #edf7fa 100%);
  box-shadow: var(--shadow-sm);
}
.patent-wrap::after { content: "PATENT ANGEMELDET"; position: absolute; right: -18px; top: 5px; color: rgba(10,48,70,.035); font-size: clamp(5rem, 12vw, 11rem); font-weight: 900; letter-spacing: -.06em; white-space: nowrap; }
.patent-inner { position: relative; z-index: 1; display: grid; grid-template-columns: .8fr 1.2fr; gap: 70px; padding: 72px; }
.patent-number { color: var(--green); font-size: clamp(7rem, 13vw, 12rem); font-weight: 850; line-height: .78; letter-spacing: -.08em; }
.patent-cards { display: grid; gap: 14px; margin-top: 30px; }
.patent-card { display: grid; grid-template-columns: 1fr auto; gap: 24px; align-items: center; padding: 22px 24px; border: 1px solid rgba(11,123,69,.15); border-radius: 16px; background: rgba(255,255,255,.73); }
.patent-card strong { display: block; color: var(--ink); }
.patent-card small { color: var(--muted); }
.patent-code { color: var(--green-dark); font-size: .78rem; font-weight: 850; white-space: nowrap; }

/* Technology visual */
.visual-split { display: grid; grid-template-columns: minmax(0, .83fr) minmax(520px, 1.17fr); gap: 82px; align-items: center; }
.visual-split.reverse { grid-template-columns: minmax(520px, 1.17fr) minmax(0, .83fr); }
.visual-split.reverse .media-shell { order: -1; }
.media-shell { position: relative; overflow: hidden; border-radius: var(--radius-lg); background: var(--navy-950); box-shadow: var(--shadow-md); }
.media-shell picture, .media-shell img { width: 100%; height: 100%; }
.media-shell img { object-fit: cover; }
.media-shell.landscape { aspect-ratio: 16/10; }
.media-shell.wide { aspect-ratio: 16/9; }
.media-label { position: absolute; left: 20px; bottom: 20px; padding: 10px 13px; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; color: #fff; background: rgba(6,37,56,.7); backdrop-filter: blur(12px); font-size: .72rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.check-list { display: grid; gap: 15px; margin: 30px 0 0; padding: 0; list-style: none; }
.check-list li { position: relative; padding-left: 32px; color: #36535f; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: 0; display: grid; place-items: center; width: 22px; height: 22px; border-radius: 50%; color: #fff; background: var(--green); font-size: .72rem; font-weight: 900; }
.check-list.red li::before { background: var(--red); }

/* Process steps */
.process-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 52px; }
.process-step { position: relative; padding: 30px 26px 28px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.process-step::after { content: ""; position: absolute; top: 48px; right: -19px; width: 20px; height: 1px; background: #b9cbd2; }
.process-step:last-child::after { display: none; }
.process-step .num { display: grid; place-items: center; width: 38px; height: 38px; margin-bottom: 26px; border-radius: 50%; color: #fff; background: var(--navy-900); font-size: .78rem; font-weight: 850; }
.process-step h3 { font-size: 1.22rem; letter-spacing: -.02em; }
.process-step p { margin: 0; color: var(--muted); font-size: .91rem; }

/* CTA & footer */
.cta { padding: 92px 0; color: #fff; background: linear-gradient(115deg, var(--navy-950) 0%, var(--navy-800) 65%, #0b6b48 130%); }
.cta h2 { color: #fff; }
.cta p { color: rgba(255,255,255,.72); }
.cta-grid { display: grid; grid-template-columns: 1fr auto; gap: 70px; align-items: center; }
.cta .btn-primary { box-shadow: none; }

.site-footer { padding: 78px 0 30px; color: #c8d5db; background: #061f30; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .75fr .75fr .9fr; gap: 60px; padding-bottom: 58px; }
.footer-brand { display: flex; align-items: center; gap: 13px; margin-bottom: 22px; }
.footer-brand img { width: 48px; height: 48px; }
.footer-brand strong { display: block; color: #fff; letter-spacing: .1em; }
.footer-brand span { display: block; margin-top: 4px; color: #8fa6b1; font-size: .69rem; letter-spacing: .16em; text-transform: uppercase; }
.footer-about { max-width: 390px; color: #9db0b9; }
.footer-col h4 { color: #fff; font-size: .92rem; letter-spacing: .02em; }
.footer-col a { display: block; width: fit-content; margin: 8px 0; color: #aebfc7; font-size: .9rem; }
.footer-col a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 30px; padding-top: 25px; border-top: 1px solid rgba(255,255,255,.1); color: #8299a4; font-size: .8rem; }
.footer-bottom-links { display: flex; flex-wrap: wrap; gap: 20px; }

/* Generic page hero */
.page-hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 92px;
  background:
    radial-gradient(circle at 86% 12%, rgba(18,164,92,.12), transparent 30%),
    radial-gradient(circle at 5% 70%, rgba(61,159,189,.11), transparent 28%),
    linear-gradient(180deg, #fbfdfd, #f1f7f8);
}
.page-hero.red {
  background:
    radial-gradient(circle at 88% 12%, rgba(239,125,54,.16), transparent 31%),
    radial-gradient(circle at 4% 75%, rgba(216,61,50,.08), transparent 25%),
    linear-gradient(180deg, #fffdfc, #f8f7f5);
}
.page-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(440px, .88fr); gap: 82px; align-items: center; }
.page-hero-copy { max-width: 770px; }
.page-hero h1 { font-size: clamp(3.15rem, 5.7vw, 5.85rem); }
.page-hero .lead { max-width: 750px; }
.hero-image-card { position: relative; overflow: hidden; min-height: 500px; border-radius: var(--radius-lg); background: var(--paper-2); box-shadow: var(--shadow-md); }
.hero-image-card picture, .hero-image-card img { width: 100%; height: 100%; }
.hero-image-card img { object-fit: cover; }
.hero-image-card.contain { display: grid; place-items: center; padding: 30px; background: linear-gradient(135deg, #eaf5f8, #fff); }
.hero-image-card.contain img { object-fit: contain; }
.hero-image-card::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 62%, rgba(6,37,56,.16)); pointer-events: none; }
.hero-image-card.contain::after { display: none; }
.hero-patent { display: inline-flex; align-items: center; gap: 9px; margin-top: 22px; padding: 10px 13px; border-radius: 999px; color: var(--green-dark); background: var(--green-soft); font-size: .78rem; font-weight: 850; }
.hero-patent.red { color: #9d3028; background: var(--red-soft); }
.hero-patent::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: currentColor; }

/* About */
.about-prose { display: grid; gap: 32px; }
.about-prose p { font-size: 1.12rem; }
.principles { display: grid; gap: 0; margin-top: 34px; border-top: 1px solid var(--line); }
.principle { display: grid; grid-template-columns: 230px 1fr; gap: 42px; padding: 29px 0; border-bottom: 1px solid var(--line); }
.principle strong { color: var(--ink); font-size: 1.15rem; }
.principle p { margin: 0; color: var(--muted); }
.quote-line { padding: 56px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.quote-line p { max-width: 1050px; margin: 0; color: var(--ink); font-size: clamp(1.7rem, 3vw, 3.2rem); line-height: 1.25; letter-spacing: -.035em; }

/* Furnace page */
.signal-panel { overflow: hidden; border: 1px solid #efd8d2; border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-sm); }
.signal-chart { padding: 38px 38px 20px; }
.signal-chart svg { width: 100%; height: auto; }
.signal-chain { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid #f0ddd8; }
.signal-chain div { padding: 23px 24px; border-right: 1px solid #f0ddd8; }
.signal-chain div:last-child { border-right: 0; }
.signal-chain small { display: block; margin-bottom: 4px; color: #9a6b62; font-size: .72rem; font-weight: 800; text-transform: uppercase; }
.signal-chain strong { color: var(--ink); }

.optimization-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(430px, .75fr); gap: 76px; align-items: start; }
.step-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
.step-row { display: grid; grid-template-columns: 68px 1fr; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.step-row .num { color: var(--red); font-weight: 900; }
.step-row strong { display: block; color: var(--ink); }
.step-row p { margin: 4px 0 0; color: var(--muted); }
.savings-card { position: sticky; top: 110px; padding: 34px; border-radius: var(--radius); background: var(--navy-950); box-shadow: var(--shadow-md); color: #fff; }
.savings-card h3 { color: #fff; }
.savings-card > p { color: rgba(255,255,255,.67); }
.bar-group { display: grid; gap: 20px; margin-top: 28px; }
.bar-label { display: flex; justify-content: space-between; margin-bottom: 8px; color: #d9e4e8; font-size: .81rem; font-weight: 750; }
.bar-label strong { color: #fff; }
.bar-track { height: 11px; overflow: hidden; border-radius: 99px; background: rgba(255,255,255,.12); }
.bar-fill { height: 100%; border-radius: inherit; background: linear-gradient(90deg, var(--orange), #ffb36f); transform-origin: left; }
.bar-note { margin-top: 26px; padding-top: 18px; border-top: 1px solid rgba(255,255,255,.14); color: rgba(255,255,255,.56); font-size: .76rem; }

.control-architecture { display: grid; grid-template-columns: 1fr 70px 1.2fr 70px 1fr; align-items: stretch; gap: 12px; margin-top: 48px; }
.control-node { display: flex; flex-direction: column; justify-content: center; min-height: 220px; padding: 30px; border: 1px solid var(--line); border-radius: 20px; background: #fff; }
.control-node.featured { color: #fff; border-color: transparent; background: linear-gradient(145deg, var(--navy-900), var(--navy-700)); box-shadow: var(--shadow-md); }
.control-node h3 { font-size: 1.25rem; }
.control-node.featured h3 { color: #fff; }
.control-node p { margin: 0; color: var(--muted); font-size: .9rem; }
.control-node.featured p { color: rgba(255,255,255,.7); }
.control-arrow { display: grid; place-items: center; color: var(--red); font-size: 2rem; }
.potential-badge { display: inline-flex; align-items: baseline; gap: 10px; margin-top: 24px; color: var(--red); }
.potential-badge strong { font-size: 3.4rem; line-height: 1; }
.potential-badge span { max-width: 220px; color: var(--muted); font-size: .82rem; }
.notice { padding: 23px 25px; border: 1px solid #c8e0e7; border-left: 4px solid var(--cyan); border-radius: var(--radius-sm); background: #f1f8fa; color: #355764; }
.notice.red { border-color: #efd4ce; border-left-color: var(--red); background: #fff6f3; color: #6d453f; }
.notice strong { color: var(--ink); }

/* Biogas */
.biogas-story { display: grid; grid-template-columns: minmax(0, .84fr) minmax(500px, 1.16fr); gap: 82px; align-items: center; }
.process-figure { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: #fff; box-shadow: var(--shadow-sm); }
.process-figure img { width: 100%; height: auto; }
.figure-caption { display: flex; justify-content: space-between; gap: 20px; padding: 18px 22px; border-top: 1px solid var(--line); color: var(--muted); font-size: .78rem; }
.model-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-top: 42px; }
.model-card { padding: 28px 24px; border: 1px solid #cfe8da; border-radius: 18px; background: rgba(255,255,255,.78); }
.model-card .num { color: var(--green); font-size: 1.7rem; font-weight: 850; }
.model-card h3 { margin-top: 18px; font-size: 1.15rem; }
.model-card p { margin: 0; color: var(--muted); font-size: .88rem; }
.benefit-lines { display: grid; gap: 0; border-top: 1px solid var(--line); }
.benefit-line { display: grid; grid-template-columns: 52px 260px 1fr; gap: 26px; padding: 25px 0; border-bottom: 1px solid var(--line); }
.benefit-line .icon { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 13px; color: var(--green-dark); background: var(--green-soft); font-weight: 900; }
.benefit-line strong { color: var(--ink); }
.benefit-line p { margin: 0; color: var(--muted); }

/* Filter */
.filter-hero-visual { display: grid; place-items: center; height: 100%; padding: 46px; background: linear-gradient(145deg, #eaf7fa, #fff); }
.filter-hero-visual img { max-height: 380px; }

/* Contact */
.contact-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(500px, 1.2fr); gap: 84px; align-items: start; }
.contact-details { display: grid; gap: 0; margin-top: 32px; border-top: 1px solid var(--line); }
.contact-detail { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 19px 0; border-bottom: 1px solid var(--line); }
.contact-detail span { color: var(--muted); font-size: .8rem; font-weight: 800; text-transform: uppercase; letter-spacing: .07em; }
.contact-detail strong, .contact-detail a { color: var(--ink); font-weight: 750; }
.form-card { padding: 38px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow-md); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.field { display: grid; gap: 7px; }
.field.full { grid-column: 1 / -1; }
.field label { color: var(--ink); font-size: .8rem; font-weight: 800; }
.field input, .field textarea, .field select {
  width: 100%;
  border: 1px solid #cddbe1;
  border-radius: 12px;
  color: var(--ink);
  background: #fbfdfd;
  outline: none;
  transition: border-color .2s, box-shadow .2s, background .2s;
}
.field input, .field select { height: 52px; padding: 0 14px; }
.field textarea { min-height: 150px; padding: 13px 14px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--green); background: #fff; box-shadow: 0 0 0 4px rgba(18,164,92,.11); }
.check-field { display: flex; gap: 10px; align-items: flex-start; margin: 18px 0; color: var(--muted); font-size: .78rem; }
.check-field input { margin-top: 5px; }
.form-note, .form-status { color: var(--muted); font-size: .76rem; }
.form-status { min-height: 24px; margin-top: 14px; }
.hidden-field { position: absolute; left: -9999px; }

/* Legal */
.legal-hero { padding: 88px 0 62px; color: #fff; background: linear-gradient(135deg, var(--navy-950), var(--navy-800)); }
.legal-hero h1 { margin: 0; color: #fff; font-size: clamp(3rem, 6vw, 5.6rem); }
.legal { padding: 86px 0 110px; background: #fff; }
.legal-content h2 { margin-top: 50px; font-size: 1.55rem; letter-spacing: -.02em; }
.legal-content a { color: var(--green-dark); text-decoration: underline; text-underline-offset: 3px; }

/* Reveal */
[data-reveal] { opacity: 1; transform: none; }
.js [data-reveal] { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js [data-reveal].is-visible { opacity: 1; transform: none; }
[data-reveal-delay="1"] { transition-delay: .08s; }
[data-reveal-delay="2"] { transition-delay: .16s; }
[data-reveal-delay="3"] { transition-delay: .24s; }

@media (max-width: 1120px) {
  .main-nav { gap: 16px; }
  .main-nav a:not(.btn) { font-size: .82rem; }
  .home-grid, .page-hero-grid { grid-template-columns: 1fr 420px; gap: 48px; }
  .visual-stage { min-height: 540px; }
  .solution-card, .solution-card.reverse { grid-template-columns: 1fr 390px; }
  .solution-copy { padding: 50px; }
  .visual-split, .visual-split.reverse { grid-template-columns: 1fr 1fr; gap: 50px; }
  .optimization-grid { grid-template-columns: 1fr 390px; gap: 52px; }
  .biogas-story { grid-template-columns: 1fr 1fr; gap: 50px; }
  .footer-grid { grid-template-columns: 1.2fr .8fr .8fr; }
  .footer-grid .footer-col:last-child { grid-column: 1 / -1; }
}

@media (max-width: 920px) {
  :root { --header: 74px; }
  .container, .narrow { width: min(calc(100% - 36px), var(--container)); }
  .section { padding: 88px 0; }
  .main-nav {
    position: fixed;
    inset: 110px 18px auto;
    max-height: calc(100vh - 130px);
    display: grid;
    align-content: start;
    gap: 6px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(255,255,255,.98);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: .25s var(--ease);
  }
  .nav-open .main-nav { opacity: 1; visibility: visible; transform: none; }
  .main-nav a:not(.btn) { padding: 13px 4px; font-size: 1rem; }
  .main-nav .btn { width: 100%; margin-top: 10px; }
  .menu-toggle { display: block; }
  .home-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .home-copy, .page-hero-copy { max-width: 800px; }
  .visual-stage { min-height: 590px; max-width: 720px; width: 100%; margin: 10px auto 0; }
  .statement-grid, .section-head, .patent-inner, .cta-grid, .contact-grid { grid-template-columns: 1fr; gap: 44px; }
  .sticky { position: static; }
  .capability-grid { grid-template-columns: 1fr 1fr; }
  .capability-item:nth-child(2) { border-right: 0; }
  .capability-item:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .solution-card, .solution-card.reverse { grid-template-columns: 1fr; }
  .solution-card.reverse .solution-media { order: 0; }
  .solution-media { min-height: 430px; }
  .solution-copy { padding: 48px; }
  .filter-teaser { grid-template-columns: 1fr; }
  .patent-inner { padding: 56px; }
  .patent-number { font-size: 8.5rem; }
  .visual-split, .visual-split.reverse, .optimization-grid, .biogas-story { grid-template-columns: 1fr; }
  .visual-split.reverse .media-shell { order: 0; }
  .process-grid, .model-grid { grid-template-columns: 1fr 1fr; }
  .process-step:nth-child(2)::after { display: none; }
  .control-architecture { grid-template-columns: 1fr; }
  .control-arrow { transform: rotate(90deg); height: 38px; }
  .savings-card { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid .footer-col:last-child { grid-column: auto; }
  .hero-image-card { min-height: 440px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .announcement { font-size: .7rem; }
  .announcement .optional { display: none; }
  .brand img { width: 43px; height: 43px; }
  .brand-copy strong { font-size: .98rem; }
  .brand-copy span { font-size: .55rem; }
  .home-hero { padding: 64px 0 58px; }
  h1 { font-size: clamp(2.85rem, 14vw, 4.25rem); }
  h2 { font-size: clamp(2.15rem, 10vw, 3.5rem); }
  .home-grid, .page-hero-grid { gap: 42px; }
  .visual-stage { min-height: 460px; }
  .visual-frame { inset: 40px 0 0 18px; border-radius: 28px; }
  .patent-float { width: 215px; padding: 17px; }
  .patent-float strong { font-size: 1.35rem; }
  .chart-float { right: -8px; bottom: 24px; width: 265px; padding: 16px; }
  .data-pill { display: none; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-item { min-height: 80px; border-right: 0; border-bottom: 1px solid var(--line); }
  .capability-item:last-child { border-bottom: 0; }
  .section { padding: 72px 0; }
  .section-head { margin-bottom: 38px; }
  .solution-copy { padding: 36px 30px; }
  .solution-media { min-height: 320px; }
  .filter-copy { padding: 36px 30px; }
  .patent-inner { padding: 40px 28px; }
  .patent-card { grid-template-columns: 1fr; gap: 8px; }
  .patent-code { white-space: normal; }
  .process-grid, .model-grid { grid-template-columns: 1fr; }
  .process-step::after { display: none; }
  .principle { grid-template-columns: 1fr; gap: 8px; }
  .signal-chart { padding: 24px 18px 10px; overflow-x: auto; }
  .signal-chart svg { min-width: 650px; }
  .signal-chain { grid-template-columns: 1fr 1fr; }
  .signal-chain div:nth-child(2) { border-right: 0; }
  .signal-chain div:nth-child(-n+2) { border-bottom: 1px solid #f0ddd8; }
  .step-row { grid-template-columns: 48px 1fr; }
  .benefit-line { grid-template-columns: 44px 1fr; gap: 14px; }
  .benefit-line p { grid-column: 2; }
  .form-grid { grid-template-columns: 1fr; }
  .field.full { grid-column: auto; }
  .form-card { padding: 28px 22px; }
  .contact-detail { grid-template-columns: 1fr; gap: 5px; }
  .cta-grid { text-align: left; }
  .cta .actions { width: 100%; }
  .cta .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-bottom { flex-direction: column; }
  .hero-image-card { min-height: 350px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
}

/* Image wrappers with minimum height need an absolute picture layer. */
.visual-frame > picture,
.solution-media > picture,
.hero-image-card > picture,
.media-shell > picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.visual-frame > picture img,
.solution-media > picture img,
.hero-image-card > picture img,
.media-shell > picture img {
  width: 100%;
  height: 100%;
}

/* V3: Rückspülrechner and third patent */
.main-nav .nav-tool {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 12px !important;
  border: 1px solid #c9dbe2;
  border-radius: 999px;
  color: var(--navy-900) !important;
  background: #f4f9fa;
}
.main-nav .nav-tool::after { display: none; }
.main-nav .nav-tool:hover { border-color: var(--cyan); background: var(--cyan-soft); }
.main-nav .nav-tool span { color: var(--green-dark); font-size: .92rem; }

.filter-actions { margin-top: 25px; }
.page-hero.cyan {
  background:
    radial-gradient(circle at 88% 12%, rgba(61,159,189,.18), transparent 31%),
    radial-gradient(circle at 4% 75%, rgba(18,164,92,.08), transparent 25%),
    linear-gradient(180deg, #fbfefe, #edf6f8);
}
.hero-patent.cyan { color: #286b80; background: var(--cyan-soft); }

.calculator-promo-section {
  overflow: hidden;
  background:
    radial-gradient(circle at 8% 12%, rgba(61,159,189,.09), transparent 26%),
    linear-gradient(180deg, #ffffff 0%, #f5f9fa 100%);
}
.calculator-promo {
  display: grid;
  grid-template-columns: minmax(0, .82fr) minmax(520px, 1.18fr);
  gap: 74px;
  align-items: center;
}
.calculator-promo-copy { position: relative; z-index: 2; }
.calculator-benefits { margin: 28px 0 32px; }
.calculator-disclaimer {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: .78rem;
  line-height: 1.55;
}
.calculator-shot {
  position: relative;
  display: block;
  overflow: hidden;
  min-height: 470px;
  border: 1px solid #c9dce3;
  border-radius: var(--radius-lg);
  background: #e8eef1;
  box-shadow: var(--shadow-lg);
  transform: perspective(1400px) rotateY(-2.2deg) rotateX(1deg);
  transition: transform .55s var(--ease), box-shadow .55s var(--ease);
}
.calculator-shot::before {
  content: "";
  position: absolute;
  z-index: 2;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(255,255,255,.04) 58%, rgba(6,37,56,.14));
}
.calculator-shot:hover {
  transform: perspective(1400px) rotateY(0) rotateX(0) translateY(-6px);
  box-shadow: 0 42px 118px rgba(10,48,70,.22);
}
.calculator-shot img {
  width: 100%;
  height: 100%;
  min-height: 470px;
  object-fit: cover;
  object-position: top left;
  transition: transform .7s var(--ease);
}
.calculator-shot:hover img { transform: scale(1.018); }
.calculator-shot-link {
  position: absolute;
  z-index: 3;
  right: 22px;
  bottom: 22px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 12px 16px;
  border: 1px solid rgba(255,255,255,.35);
  border-radius: 999px;
  color: #fff;
  background: rgba(6,37,56,.86);
  box-shadow: 0 10px 28px rgba(6,37,56,.22);
  backdrop-filter: blur(12px);
  font-size: .78rem;
  font-weight: 850;
}
.calculator-shot-link b { color: #71dda6; font-size: 1rem; }
.filter-calculator-promo { grid-template-columns: minmax(0, .9fr) minmax(500px, 1.1fr); }

.patent-detail-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(360px, .7fr);
  gap: 74px;
  align-items: center;
}
.patent-fact-card {
  padding: 34px;
  border: 1px solid rgba(11,123,69,.18);
  border-radius: var(--radius);
  background: rgba(255,255,255,.82);
  box-shadow: var(--shadow-sm);
}
.patent-fact-card > span {
  display: block;
  margin-bottom: 10px;
  color: var(--green-dark);
  font-size: .72rem;
  font-weight: 850;
  letter-spacing: .11em;
  text-transform: uppercase;
}
.patent-fact-card strong {
  display: block;
  margin-bottom: 18px;
  color: var(--ink);
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1;
  letter-spacing: -.035em;
}
.patent-fact-card p { color: #36535f; font-size: .94rem; line-height: 1.55; }
.patent-fact-card small { display: block; padding-top: 16px; border-top: 1px solid #d8e8df; color: var(--muted); }

@media (max-width: 1120px) {
  .main-nav .nav-tool { padding: 7px 9px !important; }
  .calculator-promo, .filter-calculator-promo { grid-template-columns: 1fr 1fr; gap: 48px; }
  .patent-detail-grid { gap: 48px; }
}

@media (max-width: 920px) {
  .main-nav .nav-tool { width: 100%; justify-content: space-between; padding: 13px 14px !important; border-radius: 14px; }
  .calculator-promo, .filter-calculator-promo, .patent-detail-grid { grid-template-columns: 1fr; }
  .calculator-shot { min-height: 430px; max-width: 760px; width: 100%; margin-inline: auto; transform: none; }
  .calculator-shot img { min-height: 430px; }
}

@media (max-width: 640px) {
  .calculator-shot, .calculator-shot img { min-height: 310px; }
  .calculator-shot { border-radius: 24px; }
  .calculator-shot-link { right: 14px; bottom: 14px; padding: 10px 13px; }
  .patent-fact-card { padding: 28px 24px; }
}

/* Mobile safeguard for long German legal headings and addresses */
.legal-content,
.legal-content p,
.legal-content a,
.legal-content .notice { min-width: 0; overflow-wrap: anywhere; word-break: normal; }

@media (max-width: 640px) {
  .legal-hero h1 {
    font-size: clamp(2.1rem, 9vw, 3rem);
    overflow-wrap: anywhere;
  }
}


/* V4 filter imagery refinements */
.filter-photo-card{padding:0;overflow:hidden;background:#fff;border:1px solid rgba(18,58,93,.08);box-shadow:0 24px 55px rgba(18,58,93,.12)}
.filter-photo-card img{display:block;width:100%;height:100%;object-fit:cover}
.section-filter-visual{padding-top:12px}
.media-split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(28px,4vw,56px);align-items:center}
.media-split-reverse .media-copy{order:1}.media-split-reverse .media-card{order:2}
.media-card{background:#fff;border:1px solid rgba(18,58,93,.08);border-radius:28px;overflow:hidden;box-shadow:0 24px 55px rgba(18,58,93,.10)}
.media-card img{display:block;width:100%;height:auto}
.media-copy .check-list{margin-top:20px}
@media (max-width: 920px){.media-split{grid-template-columns:1fr;gap:24px}.media-split-reverse .media-copy,.media-split-reverse .media-card{order:initial}}


/* V6 premium system: bright, precise, technical */
::selection { color: #fff; background: #0b7b45; }
body { background: #f8fbfc; }
a, button, input, textarea, select { -webkit-tap-highlight-color: transparent; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible {
  outline: 3px solid rgba(18,164,92,.32); outline-offset: 3px;
}
h1, h2, h3 { text-wrap: balance; }
h1 { letter-spacing: -.048em; }
h2 { letter-spacing: -.043em; }
.lead { letter-spacing: -.008em; }

.btn {
  min-height: 56px;
  padding-inline: 24px;
  border-radius: 16px;
  letter-spacing: -.005em;
  box-shadow: 0 10px 28px rgba(10,48,70,.08);
}
.btn-primary {
  background: linear-gradient(135deg, #0c944f 0%, #16b86a 100%);
  box-shadow: 0 14px 36px rgba(18,164,92,.24);
}
.btn-primary:hover { background: linear-gradient(135deg, #087c43 0%, #12a45c 100%); }
.btn-navy { background: linear-gradient(135deg, #0a3046 0%, #174f6b 100%); }
.btn-outline { border-color: #bdcfd7; background: rgba(255,255,255,.82); }
.btn-arrow::after { content: "→"; font-size: 1.08em; transition: transform .22s var(--ease); }
.btn-arrow:hover::after { transform: translateX(3px); }
.btn-external::after { content: "↗"; font-size: 1.08em; transition: transform .22s var(--ease); }
.btn-external:hover::after { transform: translate(2px,-2px); }

.announcement { min-height: 38px; background: linear-gradient(90deg,#eaf9f1 0%,#f1f8fb 56%,#fff4f0 100%); }
.site-header { background: rgba(255,255,255,.965); }
.site-header.scrolled { box-shadow: 0 14px 38px rgba(10,48,70,.09); }
.main-nav a:not(.btn) { font-weight: 760; }
.main-nav .btn { min-height: 48px; border-radius: 14px; }

.home-hero, .page-hero { isolation: isolate; }
.home-hero::after, .page-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  opacity: .26;
  background-image:
    linear-gradient(rgba(18,63,88,.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18,63,88,.045) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.72), transparent 82%);
}
.home-hero::after { z-index: 0; }
.home-hero > .container, .page-hero > .container { position: relative; z-index: 2; }
.visual-frame, .hero-image-card, .media-shell, .media-card {
  border: 1px solid rgba(18,63,88,.09);
}
.hero-image-card, .visual-frame { box-shadow: 0 36px 100px rgba(10,48,70,.16); }
.floating-card { border-color: rgba(255,255,255,.88); box-shadow: 0 22px 62px rgba(10,48,70,.16); }
.patent-float { border-left: 4px solid var(--green); }

.solution-card, .filter-copy, .filter-visual, .process-step, .principle, .benefit-line {
  transition: transform .35s var(--ease), box-shadow .35s var(--ease), border-color .35s ease;
}
.solution-card:hover { transform: translateY(-4px); box-shadow: 0 32px 84px rgba(10,48,70,.13); border-color: #cadbe1; }
.process-step:hover { transform: translateY(-4px); box-shadow: 0 18px 46px rgba(10,48,70,.09); border-color: #c9dbe2; }
.solution-tag, .hero-patent { border: 1px solid rgba(18,63,88,.06); }
.patent-card { box-shadow: 0 8px 24px rgba(10,48,70,.035); }

.page-hero-copy .actions { margin-top: 30px; }
.page-hero .eyebrow { margin-bottom: 22px; }
.hero-patent { margin-top: 26px; }
.section-head h2 { max-width: 900px; }

.cta { background: linear-gradient(115deg, #062538 0%, #123f58 63%, #0c7550 135%); }
.cta .btn-primary { background: #fff; color: var(--navy-900); box-shadow: 0 16px 42px rgba(0,0,0,.13); }
.cta .btn-primary:hover { background: #f2fbf6; }
.site-footer { background: linear-gradient(145deg,#061f30 0%,#082b40 100%); }
.footer-col a { transition: color .2s ease, transform .2s ease; }
.footer-col a:hover { transform: translateX(2px); }

.legal-intro { font-size: 1.16rem; color: var(--ink); }
.legal-version { margin-top: 42px; color: var(--muted); font-size: .9rem; }
.legal-content h2 { margin-top: 50px; font-size: clamp(1.55rem,2.6vw,2.25rem); }
.legal-content h2:first-of-type { margin-top: 34px; }

.form-card { border: 1px solid #d2e0e5; box-shadow: 0 26px 74px rgba(10,48,70,.10); }
.field input, .field textarea, .field select { border-radius: 13px; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--green); box-shadow: 0 0 0 4px rgba(18,164,92,.10); }

@media (max-width: 640px) {
  .btn { width: 100%; min-height: 54px; }
  .actions { width: 100%; }
  .home-hero::after, .page-hero::before { background-size: 34px 34px; opacity: .18; }
}

/* V6.1 mobile layout hardening: long German headings stay inside the viewport. */
.home-grid > *,
.page-hero-grid > *,
.statement-grid > *,
.section-head > *,
.visual-split > *,
.media-split > *,
.contact-grid > *,
.cta-grid > * { min-width: 0; }

@media (max-width: 640px) {
  h1 { font-size: clamp(2.25rem, 11.5vw, 3.1rem); }
  .home-copy h1,
  .page-hero-copy h1 { max-width: 100%; }
}

/* V6.1 responsive text safeguards */
.home-copy, .page-hero-copy, .statement-grid > *, .section-head > *, .solution-copy, .filter-copy { min-width: 0; }
h1, h2, h3, .lead, p, li { overflow-wrap: break-word; }
@media (max-width: 640px) {
  h1, .page-hero h1 { font-size: clamp(2.55rem, 10.4vw, 3.25rem); line-height: 1.01; hyphens: auto; }
  h2 { font-size: clamp(2rem, 8.8vw, 3rem); line-height: 1.06; hyphens: auto; }
  .home-copy .lead, .page-hero-copy .lead { max-width: 100%; }
}
.patent-inner > *, .patent-card > * { min-width: 0; }


/* ========================================================================
   V8 TYPOGRAFIE- UND RESPONSIVE-PASS
   Keine willkürlichen Worttrennungen; Schriftgrößen reagieren auf den
   tatsächlich verfügbaren Textbereich und nicht nur auf die Fensterbreite.
   ======================================================================== */

:root { --container: 1300px; }

/* Wortgrenzen respektieren. Nur technische Adressen dürfen notfalls umbrechen. */
h1, h2, h3, h4,
.display-heading,
.lead, .big-copy,
.eyebrow, .solution-tag,
.btn, .hero-patent,
.patent-float strong,
.chart-head,
.capability-item strong,
.capability-item span {
  word-break: normal;
  overflow-wrap: normal;
  hyphens: none;
}
p, li { word-break: normal; overflow-wrap: normal; hyphens: none; }
.legal-content a,
.contact-detail a,
.patent-code,
.footer-col a,
.form-status { overflow-wrap: anywhere; word-break: normal; }

h1, h2 { text-wrap: balance; }
h3, p, li { text-wrap: pretty; }

/* Ruhigere, robustere Display-Skala */
h1 { font-size: clamp(3rem, 5.25vw, 5.35rem); line-height: .99; }
h2 { font-size: clamp(2.35rem, 3.75vw, 4.15rem); line-height: 1.035; }
h3 { line-height: 1.12; }

/* Containerbasierte Skalierung: lange deutsche Begriffe bleiben vollständig. */
.home-copy,
.page-hero-copy,
.statement-grid > .sticky,
.section-head > div:first-child,
.visual-split > div:not(.media-shell),
.media-split > .media-copy,
.optimization-grid > div:first-child,
.biogas-story > div:first-child,
.patent-inner > div:last-child,
.patent-detail-grid > div:first-child,
.calculator-promo-copy,
.contact-grid > div:first-child,
.cta-grid > div:first-child {
  container-type: inline-size;
}

.home-copy h1 {
  max-width: 13.5ch;
  font-size: clamp(3rem, 5vw, 5rem);
}
.page-hero h1 {
  max-width: 16ch;
  font-size: clamp(2.85rem, 4.45vw, 4.8rem);
}
.statement-grid .sticky h2 {
  max-width: 14ch;
  font-size: clamp(2.4rem, 3.45vw, 3.75rem);
}
.section-head h2,
.visual-split h2,
.media-split h2,
.optimization-grid h2,
.biogas-story h2,
.patent-inner h2,
.patent-detail-grid h2,
.calculator-promo h2,
.contact-grid h2,
.cta h2 {
  font-size: clamp(2.25rem, 3.35vw, 3.8rem);
}

@supports (font-size: 1cqi) {
  .home-copy h1 { font-size: clamp(2.55rem, 10.1cqi, 5rem); }
  .page-hero h1 { font-size: clamp(2.45rem, 9.1cqi, 4.8rem); }
  .statement-grid .sticky h2 { font-size: clamp(2.25rem, 9.3cqi, 3.75rem); }
  .section-head h2,
  .visual-split h2,
  .media-split h2,
  .optimization-grid h2,
  .biogas-story h2,
  .patent-inner h2,
  .patent-detail-grid h2,
  .calculator-promo h2,
  .contact-grid h2,
  .cta h2 { font-size: clamp(2.15rem, 8.15cqi, 3.8rem); }
}

/* Hero-Aufteilung: mehr Raum für Sprache, weniger unruhige Überlagerungen. */
.home-grid {
  grid-template-columns: minmax(0, 1.08fr) minmax(440px, .92fr);
  gap: 64px;
}
.home-copy { max-width: none; }
.home-copy .lead { max-width: 690px; }
.visual-stage { min-height: 570px; }
.visual-frame { inset: 0; border-radius: 34px; }
.patent-float {
  top: 18px;
  left: 18px;
  width: 252px;
  padding: 19px 20px;
}
.patent-float strong { font-size: 1.35rem; line-height: 1.12; }
.chart-float {
  right: 18px;
  bottom: 18px;
  width: 314px;
  padding: 18px 18px 14px;
}

.page-hero-grid {
  grid-template-columns: minmax(0, 1.06fr) minmax(420px, .94fr);
  gap: 68px;
}
.page-hero-copy { max-width: 790px; }

.statement-grid {
  grid-template-columns: minmax(0, .94fr) minmax(0, 1.06fr);
  gap: 82px;
}
.section-head {
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, .62fr);
  gap: 64px;
}

/* Karten und Labels: keine schmalen Einzelwortzeilen. */
.floating-card { max-width: calc(100% - 36px); }
.patent-float small,
.patent-float span { line-height: 1.35; }
.hero-patent { max-width: 100%; }
.solution-tag, .eyebrow { max-width: 100%; }

/* Rechtstexte: nur kontrollierter Umbruch, keine Zeichenkettenzerlegung. */
.legal-hero h1 {
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
  font-size: clamp(2.55rem, 5.1vw, 5rem);
}
.legal-content,
.legal-content p,
.legal-content .notice { overflow-wrap: normal; word-break: normal; hyphens: none; }

/* Navigation bereits auf Tablets kompakt umstellen. */
@media (max-width: 1040px) {
  .main-nav {
    position: fixed;
    inset: 110px 18px auto;
    max-height: calc(100vh - 130px);
    display: grid;
    align-content: start;
    gap: 6px;
    padding: 24px;
    border: 1px solid var(--line);
    border-radius: 24px;
    background: rgba(255,255,255,.985);
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: .25s var(--ease);
  }
  .nav-open .main-nav { opacity: 1; visibility: visible; transform: none; }
  .main-nav a:not(.btn) { padding: 13px 4px; font-size: 1rem; }
  .main-nav .btn { width: 100%; margin-top: 10px; }
  .menu-toggle { display: block; }
}

@media (max-width: 1120px) {
  .home-grid, .page-hero-grid { gap: 46px; }
  .home-grid { grid-template-columns: minmax(0, 1fr) minmax(400px, .88fr); }
  .page-hero-grid { grid-template-columns: minmax(0, 1fr) minmax(400px, .9fr); }
  .statement-grid { gap: 56px; }
}

@media (max-width: 920px) {
  .home-grid, .page-hero-grid { grid-template-columns: 1fr; }
  .home-copy h1, .page-hero h1, .statement-grid .sticky h2 { max-width: 18ch; }
  .visual-stage { min-height: 520px; }
  .page-hero-copy { max-width: 820px; }
  .statement-grid { grid-template-columns: 1fr; gap: 40px; }
  .statement-grid .sticky h2 { max-width: 20ch; }
}

@media (max-width: 640px) {
  .container, .narrow { width: min(calc(100% - 34px), var(--container)); }
  .home-hero { padding-top: 58px; }
  .home-copy h1,
  .page-hero h1 {
    max-width: 100%;
    font-size: clamp(2.35rem, 10.3vw, 2.85rem);
    line-height: 1.025;
  }
  .statement-grid .sticky h2,
  .section-head h2,
  .visual-split h2,
  .media-split h2,
  .optimization-grid h2,
  .biogas-story h2,
  .patent-inner h2,
  .patent-detail-grid h2,
  .calculator-promo h2,
  .contact-grid h2,
  .cta h2 {
    max-width: 100%;
    font-size: clamp(2rem, 8.8vw, 2.55rem);
    line-height: 1.075;
  }
  .visual-stage { min-height: 430px; }
  .visual-frame { border-radius: 26px; }
  .patent-float {
    top: 13px;
    left: 13px;
    width: 208px;
    padding: 15px 16px;
  }
  .patent-float strong { font-size: 1.08rem; }
  .patent-float span { font-size: .72rem; }
  .chart-float {
    right: 13px;
    bottom: 13px;
    width: min(268px, calc(100% - 26px));
    padding: 14px 14px 10px;
  }
  .chart-head { font-size: .72rem; }
  .lead { font-size: 1.06rem; line-height: 1.58; }
  .big-copy { font-size: 1.42rem; }
  .eyebrow { font-size: .7rem; letter-spacing: .105em; }
  .hero-patent { border-radius: 14px; line-height: 1.35; }
  .legal-hero h1 { font-size: clamp(2rem, 8.7vw, 2.65rem); line-height: 1.04; }
}

@media (max-width: 380px) {
  .home-copy h1, .page-hero h1 { font-size: 2.28rem; }
  .statement-grid .sticky h2,
  .section-head h2,
  .visual-split h2,
  .media-split h2,
  .optimization-grid h2,
  .biogas-story h2,
  .patent-inner h2,
  .patent-detail-grid h2,
  .calculator-promo h2,
  .contact-grid h2,
  .cta h2 { font-size: 1.95rem; }
  .brand-copy span { letter-spacing: .15em; }
}


/* V8.1: mobile grid and announcement refinements */
@media (max-width: 920px) {
  .section-head { grid-template-columns: 1fr; gap: 38px; }
  .section-head > div:first-child { width: 100%; }
}
@media (max-width: 420px) {
  .announcement { padding-inline: 10px; font-size: .68rem; }
  .announcement a { gap: 7px; }
}


/* Bilingual language switch */
.lang-switch{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:40px;padding:0 12px;border:1px solid rgba(18,58,93,.16);border-radius:999px;background:#fff;color:#123a5d!important;font-weight:900;letter-spacing:.05em;text-decoration:none;box-shadow:0 8px 18px rgba(18,58,93,.06)}
.lang-switch:hover{border-color:#17a845;color:#0b7b45!important;transform:translateY(-1px)}
@media (max-width: 920px){.lang-switch{width:100%;justify-content:flex-start;padding:0 16px;background:#f4f8fb}}