:root {
  --navy: #13233a;
  --navy-2: #1d3352;
  --text: #1c2430;
  --muted: #5b6676;
  --bg: #ffffff;
  --bg-soft: #f4f6f9;
  --line: #dfe4ea;
  --accent: #e0702a;
  --accent-dark: #c25a18;
  --red: #c0392b;
  --green: #2e7d4f;
  --radius: 10px;
  --max: 1080px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent-dark); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Kopfzeile */
header.top {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 10;
}
header.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 16px;
}
.logo {
  font-weight: 800;
  font-size: 24px;
  color: #fff;
  text-decoration: none;
  letter-spacing: -0.5px;
}
.logo span { color: var(--accent); }
nav a {
  color: #d6dde8;
  text-decoration: none;
  margin-left: 20px;
  font-size: 15px;
}
nav a:hover { color: #fff; }

/* Buttons */
.btn {
  display: inline-block;
  padding: 13px 22px;
  border-radius: var(--radius);
  font-weight: 700;
  text-decoration: none;
  font-size: 16px;
  border: 2px solid transparent;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { border-color: #fff; color: #fff; }
.btn-ghost:hover { background: rgba(255, 255, 255, 0.1); }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-2); }

/* Hero */
.hero {
  background: linear-gradient(160deg, var(--navy) 0%, var(--navy-2) 100%);
  color: #fff;
  padding: 72px 0 80px;
}
.hero .eyebrow {
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 14px;
  margin: 0 0 12px;
}
.hero h1 {
  font-size: clamp(32px, 5vw, 52px);
  line-height: 1.15;
  margin: 0 0 20px;
  max-width: 760px;
}
.hero p.lead {
  font-size: 19px;
  color: #d6dde8;
  max-width: 680px;
  margin: 0 0 32px;
}
.hero .actions { display: flex; flex-wrap: wrap; gap: 12px; }
.hero .note { margin-top: 18px; font-size: 14px; color: #aab6c6; }

/* Abschnitte */
section { padding: 72px 0; }
section.soft { background: var(--bg-soft); }
section h2 {
  font-size: clamp(26px, 3.5vw, 36px);
  line-height: 1.2;
  margin: 0 0 12px;
}
section .intro { color: var(--muted); max-width: 680px; margin: 0 0 40px; }

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
}
.card .num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--navy);
  color: #fff;
  font-weight: 700;
  margin-bottom: 14px;
}
.card h3 { margin: 0 0 8px; font-size: 19px; }
.card p { margin: 0; color: var(--muted); }

/* Ampel für Gefahr / Notfall / Rest */
.levels .card { border-top-width: 5px; }
.levels .gefahr { border-top-color: var(--red); }
.levels .notfall { border-top-color: var(--accent); }
.levels .normal { border-top-color: var(--green); }
.levels .label {
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}
.levels .gefahr .label { color: var(--red); }
.levels .notfall .label { color: var(--accent-dark); }
.levels .normal .label { color: var(--green); }

.checklist { list-style: none; padding: 0; margin: 28px 0 0; }
.checklist li { padding-left: 30px; position: relative; margin-bottom: 10px; }
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 800;
}

/* Rechner */
.calc {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  align-items: start;
}
.calc label { display: block; font-weight: 600; margin-bottom: 6px; }
.calc .hint { font-size: 14px; color: var(--muted); margin: 4px 0 20px; }
.calc input {
  width: 100%;
  padding: 12px 14px;
  font-size: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: inherit;
}
.calc input:focus { outline: 2px solid var(--accent); border-color: var(--accent); }
.result {
  background: var(--navy);
  color: #fff;
  border-radius: var(--radius);
  padding: 30px;
}
.result .big {
  font-size: clamp(36px, 5vw, 48px);
  font-weight: 800;
  color: var(--accent);
  line-height: 1.1;
  margin: 6px 0 10px;
}
.result p { margin: 0 0 8px; color: #d6dde8; }
.result small { color: #aab6c6; display: block; margin-top: 16px; }

/* Pilot */
.pilot {
  background: #fff;
  border: 2px solid var(--accent);
  border-radius: var(--radius);
  padding: 36px;
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 32px;
  align-items: center;
}
.pilot h2 { margin-top: 0; }
.pilot ul { margin: 12px 0 0; padding-left: 20px; }

/* Kontakt */
.contact a.mail { font-size: 22px; font-weight: 700; }

/* Fußzeile */
footer {
  background: var(--navy);
  color: #aab6c6;
  padding: 32px 0;
  font-size: 15px;
}
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; }
footer a { color: #d6dde8; margin-right: 18px; }

/* Rechtstexte */
.legal { padding: 56px 0 72px; }
.legal h1 { font-size: 34px; margin: 0 0 24px; }
.legal h2 { font-size: 21px; margin: 32px 0 8px; }
.legal p, .legal li { max-width: 760px; }

@media (max-width: 820px) {
  nav { display: none; }
  .grid-3, .calc, .pilot { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
  .hero { padding: 56px 0 64px; }
}