:root {
  --ai-blue: #06477f;
  --navy: #03345f;
  --cyan: #11b8c9;
  --cyan-bright: #22d6e4;
  --cyan-light: #8fffff;
  --gray-line: #b9cdd8;
  --off-white: #f7fafc;
  --cool-gray: #e5eef2;
  --text: #052e55;
  --text-muted: #4a6785;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: #ffffff;
  line-height: 1.65;
}

img { max-width: 100%; height: auto; }

.container { max-width: 1160px; margin: 0 auto; padding: 0 24px; }

a { color: var(--ai-blue); text-decoration: none; }
a:hover { color: var(--cyan); }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-line);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  padding-top: 12px; padding-bottom: 12px; gap: 24px;
}
.brand-logo { width: 260px; display: block; }
.site-nav { display: flex; align-items: center; gap: 26px; }
.site-nav a { font-weight: 600; font-size: 0.95rem; color: var(--text); }
.site-nav a:hover, .site-nav a.active { color: var(--cyan); }
.nav-cta {
  background: linear-gradient(90deg, var(--ai-blue), var(--cyan));
  color: #fff !important; padding: 9px 20px; border-radius: 8px;
}
.nav-cta:hover { filter: brightness(1.1); color: #fff !important; }

.nav-toggle, .nav-burger { display: none; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(ellipse 80% 60% at 85% 20%, rgba(17,184,201,0.12), transparent),
    radial-gradient(ellipse 60% 50% at 10% 90%, rgba(6,71,127,0.10), transparent),
    var(--off-white);
  padding: 72px 0 84px;
}
.hero-grid { display: grid; grid-template-columns: 1.25fr 1fr; gap: 48px; align-items: center; }
.hero-kicker {
  color: var(--cyan); font-weight: 700; letter-spacing: 0.18em;
  text-transform: uppercase; font-size: 0.85rem; margin-bottom: 14px;
}
.hero h1 { font-size: clamp(2rem, 4.2vw, 3.2rem); line-height: 1.15; color: var(--navy); font-weight: 800; }
.accent { color: var(--cyan); }
.hero-sub { margin-top: 18px; font-size: 1.12rem; color: var(--text-muted); max-width: 34em; }
.hero-actions { display: flex; gap: 14px; margin-top: 28px; flex-wrap: wrap; }
.hero-usps { list-style: none; margin-top: 26px; display: grid; gap: 8px; }
.hero-usps li { padding-left: 26px; position: relative; font-size: 0.98rem; }
.hero-usps li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 700; }
.hero-logo img { border-radius: 18px; box-shadow: 0 18px 50px rgba(3,52,95,0.12); background: #fff; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block; padding: 13px 28px; border-radius: 10px;
  font-weight: 700; font-size: 1rem; transition: all 0.2s ease; border: 2px solid transparent;
}
.btn-primary {
  background: linear-gradient(90deg, var(--ai-blue), var(--cyan));
  color: #fff;
}
.btn-primary:hover { box-shadow: 0 8px 24px rgba(17,184,201,0.35); color: #fff; transform: translateY(-1px); }
.btn-ghost { border-color: var(--ai-blue); color: var(--ai-blue); }
.btn-ghost:hover { background: var(--ai-blue); color: #fff; }
.btn-lg { padding: 16px 36px; font-size: 1.08rem; }

/* ---------- Sections ---------- */
.section { padding: 78px 0; }
.section-alt { background: var(--cool-gray); }
.section-dark { background: var(--navy); }
.section-head { max-width: 46em; margin-bottom: 48px; }
.kicker {
  color: var(--cyan); font-weight: 700; letter-spacing: 0.16em;
  text-transform: uppercase; font-size: 0.82rem; margin-bottom: 10px;
}
.kicker-dark { color: var(--cyan-bright); }
.section-head h2 { font-size: clamp(1.6rem, 3vw, 2.3rem); color: var(--navy); line-height: 1.2; }
.section-dark .on-dark { color: #fff; }
.section-dark .on-dark-muted { color: var(--gray-line); }
.section-head p { margin-top: 14px; color: var(--text-muted); font-size: 1.05rem; }
.section-dark .section-head p { color: var(--gray-line); }

/* ---------- Cards ---------- */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: #fff; border: 1px solid var(--gray-line); border-radius: 14px;
  padding: 28px; display: block; transition: all 0.2s ease; color: var(--text);
}
.card:hover {
  transform: translateY(-4px); box-shadow: 0 14px 36px rgba(3,52,95,0.12);
  border-color: var(--cyan); color: var(--text);
}
.card h3 { color: var(--navy); font-size: 1.12rem; margin-bottom: 10px; }
.card p { color: var(--text-muted); font-size: 0.95rem; }
.card-icon {
  width: 52px; height: 52px; border-radius: 12px; margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(6,71,127,0.10), rgba(17,184,201,0.15));
  color: var(--ai-blue); font-size: 1.5rem;
  display: flex; align-items: center; justify-content: center;
}
.card.static:hover { transform: none; box-shadow: none; border-color: var(--gray-line); }

/* ---------- Dark features ---------- */
.feature {
  background: rgba(255,255,255,0.05); border: 1px solid rgba(185,205,216,0.25);
  border-radius: 14px; padding: 28px;
}
.feature h3 { color: var(--cyan-bright); margin-bottom: 10px; font-size: 1.1rem; }
.feature p { color: var(--gray-line); font-size: 0.97rem; }

/* ---------- Steps ---------- */
.steps { list-style: none; display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; counter-reset: step; }
.steps li { position: relative; padding-top: 8px; }
.step-num {
  width: 44px; height: 44px; border-radius: 50%;
  background: linear-gradient(135deg, var(--ai-blue), var(--cyan));
  color: #fff; font-weight: 800; font-size: 1.2rem;
  display: flex; align-items: center; justify-content: center; margin-bottom: 14px;
}
.steps h3 { color: var(--navy); font-size: 1.02rem; margin-bottom: 8px; }
.steps p { color: var(--text-muted); font-size: 0.9rem; }

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(100deg, var(--navy) 0%, var(--ai-blue) 55%, var(--cyan) 100%);
  padding: 56px 0;
}
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 32px; flex-wrap: wrap; }
.cta-inner h2 { color: #fff; font-size: clamp(1.4rem, 2.6vw, 2rem); }
.cta-inner p { color: var(--cyan-light); margin-top: 6px; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy); color: var(--gray-line); padding: 56px 0 0; }
.footer-grid {
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 36px;
  padding-bottom: 40px;
}
.footer-logo { width: 160px; background: #fff; border-radius: 10px; padding: 8px; margin-bottom: 14px; }
.site-footer h4 { color: #fff; margin-bottom: 12px; font-size: 0.95rem; letter-spacing: 0.06em; }
.site-footer a { display: block; color: var(--gray-line); margin-bottom: 8px; font-size: 0.92rem; }
.site-footer a:hover { color: var(--cyan-bright); }
.site-footer p { font-size: 0.92rem; }
.email-img { border-radius: 6px; height: 1.15em; width: auto; vertical-align: middle; }
.footer-bottom { border-top: 1px solid rgba(185,205,216,0.25); padding-top: 18px; padding-bottom: 18px; }
.footer-bottom p { font-size: 0.85rem; }

/* ---------- Detailseiten ---------- */
.page-hero {
  background: var(--off-white);
  border-bottom: 1px solid var(--gray-line);
  padding: 52px 0;
}
.page-hero h1 { color: var(--navy); font-size: clamp(1.8rem, 3.4vw, 2.6rem); }
.page-hero .kicker { margin-bottom: 8px; }
.page-hero p { margin-top: 14px; color: var(--text-muted); max-width: 44em; font-size: 1.08rem; }

.service-block { padding: 60px 0; border-bottom: 1px solid var(--cool-gray); }
.service-block:nth-of-type(even) { background: var(--off-white); }
.service-block h2 { color: var(--navy); font-size: 1.7rem; margin-bottom: 8px; }
.service-block .kicker { margin-bottom: 6px; }
.service-block > .container > p.lead { color: var(--text-muted); font-size: 1.08rem; max-width: 46em; margin-bottom: 28px; }

.service-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 26px; }
.mini {
  background: #fff; border: 1px solid var(--gray-line); border-radius: 12px; padding: 22px;
}
.mini h4 { color: var(--ai-blue); margin-bottom: 6px; font-size: 1rem; }
.mini p { font-size: 0.92rem; color: var(--text-muted); }

.check-list { list-style: none; margin-top: 22px; display: grid; gap: 10px; max-width: 46em; }
.check-list li { padding-left: 28px; position: relative; }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--cyan); font-weight: 800; }

/* ---------- Kontakt ---------- */
.contact-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 48px; margin-top: 36px; }
.contact-card {
  background: #fff; border: 1px solid var(--gray-line); border-radius: 16px; padding: 34px;
  box-shadow: 0 10px 30px rgba(3,52,95,0.07);
}
.contact-note { background: var(--cool-gray); border-radius: 12px; padding: 20px 24px; margin-top: 26px; font-size: 0.95rem; color: var(--text-muted); }

/* ---------- Impressum/Datenschutz ---------- */
.legal { padding: 56px 0 80px; }
.legal h1 { color: var(--navy); margin-bottom: 8px; }
.legal h2 { color: var(--ai-blue); margin: 30px 0 10px; font-size: 1.15rem; }
.legal p, .legal li { max-width: 52em; color: var(--text); font-size: 0.97rem; margin-bottom: 10px; }
.legal ul { padding-left: 22px; margin-bottom: 14px; }
.legal-back { display: inline-block; margin-bottom: 20px; font-weight: 600; }

.stat { text-align: center; padding: 26px 18px; background: #fff; border: 1px solid var(--gray-line); border-radius: 14px; }
.stat-num { font-size: 1.7rem; font-weight: 800; color: var(--ai-blue); margin-bottom: 10px; }
.stat p { font-size: 0.92rem; color: var(--text-muted); }
.feature-box { background: #fff; border: 1px solid var(--gray-line); border-radius: 16px; padding: 36px; }
.feature-box .h2 { font-size: 1.5rem; color: var(--navy); margin-bottom: 12px; }
.feature-box p { color: var(--text-muted); }

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; }
  .hero-logo { max-width: 420px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 700px) {
  .nav-toggle { display: none; }
  .nav-burger {
    display: flex; flex-direction: column; gap: 5px; cursor: pointer; z-index: 110;
  }
  .nav-burger span { width: 26px; height: 3px; background: var(--navy); border-radius: 2px; }
  .site-nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: #fff; border-bottom: 1px solid var(--gray-line);
    flex-direction: column; align-items: stretch; padding: 18px 24px; gap: 14px;
  }
  .nav-toggle:checked ~ .site-nav { display: flex; }
  .grid-3, .grid-4, .steps { grid-template-columns: 1fr; }
  .grid-2 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .service-grid { grid-template-columns: 1fr; }
  .brand-logo { width: 160px; }
}