/* Grundlayout: Variablen, Typografie, Navigation und Startseite. */
:root {
  --ink: #142520;
  --forest: #173d34;
  --green: #2f765d;
  --lime: #c7dc5d;
  --paper: #f2f0e9;
  --white: #fff;
  --line: #cdd3cc;
  --heat: #e7683b;
  --cold: #448ca4;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
}
a {
  color: inherit;
  text-decoration: none;
}
a:focus-visible {
  outline: 3px solid var(--lime);
  outline-offset: 4px;
}
.site-header {
  height: 90px;
  padding: 0 clamp(24px, 5vw, 76px);
  display: flex;
  align-items: center;
  gap: 36px;
  border-bottom: 1px solid #ffffff33;
  position: absolute;
  z-index: 5;
  width: 100%;
  color: white;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  line-height: 0.82;
  font-size: 22px;
  letter-spacing: -1px;
}
.brand b {
  font-weight: 800;
}
.brand small {
  display: block;
  font-size: 6px;
  letter-spacing: 1.3px;
  margin-top: 7px;
}
.brand-mark {
  width: 34px;
  height: 34px;
  border: 2px solid var(--lime);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--lime);
  font-size: 25px;
  font-weight: bold;
}
.site-header nav {
  display: flex;
  gap: 27px;
  margin-left: auto;
  font-size: 13px;
}
.site-header nav a {
  opacity: 0.8;
}
.site-header nav a:hover {
  opacity: 1;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  background: var(--lime);
  color: var(--ink);
  font-weight: 700;
  padding: 16px 21px;
  border-radius: 2px;
  font-size: 14px;
}
.button.compact {
  padding: 12px 16px;
}
.text-link {
  display: inline-flex;
  gap: 12px;
  align-items: center;
  color: white;
  font-weight: 700;
  font-size: 14px;
  border-bottom: 1px solid #ffffff66;
  padding-bottom: 6px;
}
.text-link.dark {
  color: var(--forest);
  margin-top: 28px;
}
.hero {
  min-height: 760px;
  background: var(--forest);
  color: white;
  padding: 170px clamp(24px, 7vw, 108px) 80px;
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 6vw;
  overflow: hidden;
}
.hero-copy {
  max-width: 620px;
}
.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 700;
  font-size: 11px;
  margin: 0 0 24px;
  color: var(--green);
}
.hero .eyebrow,
.process .eyebrow,
.cta .eyebrow {
  color: var(--lime);
}
h1 {
  font-size: clamp(58px, 6.4vw, 105px);
  line-height: 0.86;
  letter-spacing: -0.07em;
  margin: 0;
  font-weight: 500;
}
h1 em {
  font-style: normal;
  color: var(--lime);
}
.lead {
  font-size: clamp(17px, 1.4vw, 21px);
  line-height: 1.55;
  max-width: 590px;
  margin: 34px 0;
  color: #d7e0dc;
}
.actions {
  display: flex;
  align-items: center;
  gap: 32px;
}
.system-visual {
  min-height: 540px;
  background: #e9ebe5;
  color: var(--ink);
  position: relative;
  border-radius: 2px;
  overflow: hidden;
  box-shadow: 0 30px 80px #07130f55;
}
.visual-label {
  display: flex;
  justify-content: space-between;
  padding: 22px 26px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  border-bottom: 1px solid #c7cdc7;
}
.system-visual svg {
  width: 100%;
  height: 410px;
}
.gridline {
  fill: none;
  stroke: #b3bdb5;
  stroke-width: 1;
}
.pipe {
  fill: none;
  stroke-width: 11;
  stroke-linecap: round;
}
.hot {
  stroke: var(--heat);
}
.cool {
  stroke: var(--cold);
}
.system-visual circle {
  fill: var(--ink);
}
.visual-legend {
  display: flex;
  gap: 22px;
  padding: 18px 26px;
  font-size: 11px;
  border-top: 1px solid #c7cdc7;
}
.visual-legend span:last-child {
  margin-left: auto;
  color: #66716b;
}
.visual-legend i {
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  margin-right: 6px;
}
.heat {
  background: var(--heat);
}
.cold {
  background: var(--cold);
}
.trust-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  padding: 0 clamp(24px, 7vw, 108px);
  background: white;
  border-bottom: 1px solid var(--line);
}
.trust-strip span {
  padding: 28px 18px;
  display: flex;
  align-items: center;
  gap: 13px;
  font-size: 12px;
  font-weight: 700;
  border-right: 1px solid var(--line);
}
.trust-strip span:first-child {
  border-left: 1px solid var(--line);
}
.trust-strip svg {
  width: 18px;
  color: var(--green);
}
.section {
  padding: 110px clamp(24px, 7vw, 108px);
}
.section-head {
  display: grid;
  grid-template-columns: 1.3fr 0.7fr;
  gap: 10vw;
  align-items: end;
}
.section h2,
.cta h2 {
  font-size: clamp(38px, 4.2vw, 68px);
  line-height: 1;
  letter-spacing: -0.045em;
  font-weight: 500;
  margin: 0;
  max-width: 850px;
}
.section-head > p {
  line-height: 1.7;
  color: #52615b;
  margin: 0;
}
.system-grid {
  margin-top: 68px;
  border-top: 1px solid #aeb8b0;
}
.system-card {
  display: grid;
  grid-template-columns: 70px 1fr auto;
  align-items: center;
  gap: 20px;
  padding: 27px 8px;
  border-bottom: 1px solid #aeb8b0;
  transition: 0.2s;
}
.system-card:hover {
  background: white;
  padding-left: 20px;
}
.system-card > span {
  font-size: 11px;
  color: var(--green);
}
.system-card h3 {
  font-size: 23px;
  margin: 0 0 6px;
}
.system-card p {
  margin: 0;
  color: #647069;
  font-size: 14px;
}
.system-card > svg {
  color: var(--green);
}
.process {
  background: var(--ink);
  color: white;
}
.process ol {
  list-style: none;
  padding: 0;
  margin: 70px 0 0;
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  border-top: 1px solid #ffffff44;
}
.process li {
  padding: 24px 12px 10px 0;
  min-height: 140px;
  border-right: 1px solid #ffffff33;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.process li b {
  color: var(--lime);
  font-size: 11px;
}
.process li span {
  font-size: 18px;
}
.cta {
  background: var(--green);
  color: white;
  padding: 90px clamp(24px, 7vw, 108px);
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 60px;
}
.cta p {
  max-width: 650px;
  line-height: 1.6;
}
.button.light {
  background: white;
}
@media (max-width: 1050px) {
  .site-header nav {
    display: none;
  }
  .site-header .button {
    margin-left: auto;
  }
  .hero {
    grid-template-columns: 1fr;
    padding-top: 145px;
  }
  .system-visual {
    min-height: 430px;
  }
  .system-visual svg {
    height: 320px;
  }
  .trust-strip {
    grid-template-columns: 1fr 1fr;
  }
  .section-head {
    grid-template-columns: 1fr;
  }
  .process ol {
    grid-template-columns: 1fr 1fr;
  }
  .cta {
    align-items: flex-start;
    flex-direction: column;
  }
}
@media (max-width: 620px) {
  .site-header {
    height: 76px;
    padding: 0 20px;
  }
  .brand {
    font-size: 18px;
  }
  .brand-mark {
    width: 30px;
    height: 30px;
  }
  .site-header .button {
    font-size: 0;
    padding: 11px;
  }
  .hero {
    padding: 120px 20px 48px;
    min-height: auto;
  }
  .hero h1 {
    font-size: 58px;
  }
  .lead {
    font-size: 16px;
  }
  .actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .system-visual {
    min-height: 350px;
  }
  .system-visual svg {
    height: 260px;
  }
  .visual-legend span:last-child {
    display: none;
  }
  .trust-strip {
    grid-template-columns: 1fr;
  }
  .trust-strip span {
    border-left: 1px solid var(--line);
  }
  .section {
    padding: 75px 20px;
  }
  .system-card {
    grid-template-columns: 40px 1fr auto;
  }
  .system-card p {
    display: none;
  }
  .process ol {
    grid-template-columns: 1fr;
  }
  .process li {
    min-height: 90px;
  }
  .cta {
    padding: 70px 20px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .system-card {
    transition: none;
  }
}