:root {
  --bg: #05070a;
  --panel: rgba(15, 17, 20, 0.92);
  --text: #f3f5f6;
  --muted: #b8c0c4;
  --line: #c7eeff;
  --line-strong: #c7eeff;
  --blue: #c7eeff;
  --red: #e50000;
  --max: 1180px;
  --radius: 14px;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--text);
  background: #05070a;
  line-height: 1.55;
}
body:before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  pointer-events: none;
  background-image: url("assets/graph-paper-bg.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 1;
}
body:after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(
      circle at 22% 12%,
      rgba(229, 0, 0, 0.15),
      transparent 28rem
    ),
    linear-gradient(180deg, rgba(5, 7, 10, 0.36), rgba(5, 7, 10, 0.78));
}
a {
  color: inherit;
}
.wrap {
  width: min(calc(100% - 32px), var(--max));
  margin-inline: auto;
}
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  background: white;
  color: #000;
  padding: 0.75rem 1rem;
  z-index: 50;
  border-radius: var(--radius);
}
.skip-link:focus {
  top: 1rem;
}
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: rgba(5, 7, 10, 0.82);
  backdrop-filter: blur(14px);
}
.nav {
  min-height: 86px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
}
.brand img {
  height: 58px;
  width: auto;
  display: block;
  max-width: min(58vw, 520px);
}
.nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.nav a {
  text-decoration: none;
}
.brand {
  display: inline-flex;
  padding: 4px;
  border: 1px solid rgba(199, 238, 255, 0.45);
  border-radius: calc(var(--radius) + 4px);
  background: rgba(5, 7, 10, 0.45);
  box-shadow:
    0 0 24px rgba(199, 238, 255, 0.08),
    inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}
.nav li a {
  display: inline-flex;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav li a:hover,
.nav li a:focus {
  color: #fff;
  border-color: var(--line-strong);
  background: rgba(199, 238, 255, 0.08);
}
.menu {
  display: none;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #fff;
  background: #15181c;
  font-weight: 800;
  letter-spacing: 0.08em;
}
.hero {
  min-height: 720px;
  display: grid;
  grid-template-columns: 1.08fr 0.92fr;
  align-items: center;
  gap: 56px;
  padding: 88px 0;
}
.overline {
  margin: 0 0 14px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  max-width: 900px;
  margin-bottom: 24px;
  font-size: clamp(42px, 6vw, 78px);
  line-height: 0.96;
  letter-spacing: -0.052em;
}
h2 {
  margin-bottom: 16px;
  font-size: clamp(30px, 4vw, 54px);
  line-height: 1;
  letter-spacing: -0.04em;
}
h3 {
  margin-bottom: 12px;
  font-size: 22px;
  line-height: 1.15;
}
.lead {
  max-width: 760px;
  color: var(--muted);
  font-size: 20px;
}
.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 14px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #fff;
  text-decoration: none;
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(15, 17, 20, 0.88);
}
.button.primary {
  color: #fff;
  border-color: var(--blue);
  background: linear-gradient(180deg, #e50000, #8b0000);
}
.cad-panel {
  position: relative;
  min-height: 500px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background:
    linear-gradient(145deg, rgba(199, 238, 255, 0.08), transparent 40%),
    rgba(7, 9, 12, 0.78);
  box-shadow:
    0 18px 70px rgba(0, 0, 0, 0.45),
    inset 0 0 0 1px rgba(255, 255, 255, 0.03);
  overflow: hidden;
}
.cad-panel:before,
.cad-panel:after {
  content: "";
  position: absolute;
  inset: 48px 24px;
  border: 1px dashed var(--blue);
  border-radius: var(--radius);
  transform: skewY(-9deg);
}
.cad-panel:after {
  inset: 54px;
  border-color: var(--blue);
  transform: skewY(12deg);
}
.cad-panel img {
  position: absolute;
  left: 50%;
  top: 50%;
  z-index: 2;
  width: min(70%, 330px);
  transform: translate(-50%, -50%);
  filter: drop-shadow(0 18px 28px rgba(0, 0, 0, 0.7));
}
.cad-panel img.cad-drawing {
  width: min(76%, 360px);
  filter: drop-shadow(0 18px 28px rgba(0, 0, 0, 0.55));
}
.measure {
  position: absolute;
  z-index: 4;
  padding: 6px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: #fff;
  background: rgba(5, 7, 10, 0.84);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.1em;
}
.measure-a {
  top: 32px;
  right: 28px;
}
.measure-b {
  left: 28px;
  top: 130px;
}
.measure-c {
  right: 44px;
  bottom: 44px;
  color: #fff;
  border-color: var(--blue);
}
.profile,
.contact {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 42px;
  align-items: start;
  padding: 58px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.profile {
  display: block;
  position: relative;
}
.contact {
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
}
.profile p,
.contact p,
.muted,
.legal div,
.cap-card p {
  color: var(--muted);
}
.section {
  padding: 88px 0;
}
#leistungen {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
#partner {
  border-top: 1px solid var(--line);
}
.section-head {
  max-width: 820px;
  margin-bottom: 34px;
}
.capabilities {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.cap-card,
.profile-card,
.profile-photo,
.contact address,
details,
.partner-tile {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}
.cap-card {
  min-height: 260px;
  padding: 24px;
  position: relative;
  overflow: hidden;
}
.cap-card:after {
  content: "";
  position: absolute;
  z-index: 1;
  right: -44px;
  bottom: -44px;
  width: 120px;
  height: 120px;
  border: 1px solid var(--blue);
  border-radius: var(--radius);
  transform: rotate(45deg);
}
.cap-card span {
  position: relative;
  z-index: 3;
  display: inline-flex;
  margin-bottom: 42px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.16em;
}
.cap-card h3,
.cap-card p {
  position: relative;
  z-index: 3;
}
.cap-card img {
  position: absolute;
  right: 4px;
  top: 18px;
  z-index: 2;
  width: min(34%, 94px);
  height: auto;
  opacity: 0.72;
  filter: drop-shadow(0 12px 18px rgba(0, 0, 0, 0.45));
}
.partner-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.partner-tile {
  min-height: 145px;
  display: grid;
  place-items: center;
  padding: 18px;
}
.partner-tile img {
  width: min(100%, 260px);
  height: auto;
  opacity: 0.95;
}
.profile-card,
.contact address {
  padding: 28px;
}
.profile-card {
  padding-right: min(320px, 34%);
}
.profile-photo {
  position: absolute;
  top: 30px;
  right: 28px;
  z-index: 4;
  margin: 0;
  width: clamp(180px, 24vw, 260px);
  aspect-ratio: 1;
  overflow: hidden;
}
.profile-photo img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 50% 22%;
}
.checks {
  display: grid;
  gap: 12px;
  padding: 0;
  margin: 0;
  list-style: none;
}
#vorteile .checks {
  grid-template-columns: 1fr;
}
.checks li {
  padding: 16px 18px 16px 48px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(10, 12, 15, 0.86);
  position: relative;
}
.checks li:before {
  content: "✓";
  position: absolute;
  left: 18px;
  color: var(--red);
  font-weight: 900;
}
.contact address {
  display: grid;
  gap: 7px;
  font-style: normal;
}
.contact address a {
  color: var(--blue);
  text-decoration: none;
}
.legal details {
  margin-top: 14px;
  padding: 18px 20px;
}
.legal summary {
  cursor: pointer;
  color: #fff;
  font-size: 18px;
  font-weight: 900;
}
.legal div {
  max-width: 82ch;
  padding-top: 14px;
}
.footer {
  border-top: 1px solid var(--line);
  background: rgba(5, 7, 10, 0.88);
}
.footer-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
}
.footer a {
  color: var(--blue);
}
code {
  color: var(--blue);
  background: rgba(199, 238, 255, 0.08);
  padding: 2px 5px;
  border-radius: calc(var(--radius) / 2);
}
@media (max-width: 980px) {
  .hero,
  .contact {
    grid-template-columns: 1fr;
  }
  .profile-card {
    padding-right: 28px;
  }
  .profile-card .overline,
  .profile-card h2 {
    padding-right: clamp(132px, 32vw, 184px);
  }
  .profile-photo {
    top: 24px;
    right: 24px;
    width: clamp(118px, 28vw, 156px);
    margin: 0;
  }
  .capabilities {
    grid-template-columns: repeat(2, 1fr);
  }
  .cad-panel {
    min-height: 420px;
  }
}
@media (max-width: 760px) {
  body:before {
    inset: auto;
    top: 50%;
    left: 50%;
    width: max(100vw, 100vh);
    height: max(100vw, 100vh);
    transform: translate(-50%, -50%);
    background-size: 100% 100%;
  }
  .nav {
    min-height: 74px;
  }
  .brand img {
    height: 46px;
    max-width: 68vw;
  }
  .menu {
    display: inline-flex;
  }
  .nav ul {
    position: absolute;
    top: 74px;
    left: 16px;
    right: 16px;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 10px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: rgba(5, 7, 10, 0.97);
  }
  .nav ul.is-open {
    display: flex;
  }
  .nav li a {
    display: flex;
    padding: 14px;
  }
  .hero {
    min-height: auto;
    padding: 56px 0;
    gap: 34px;
  }
  h1 {
    font-size: clamp(38px, 13vw, 58px);
  }
  .lead {
    font-size: 18px;
  }
  .capabilities,
  .partner-grid,
  #vorteile .checks {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 64px 0;
  }
  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 6px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}