/* ============================================================
   KLARSICHT — Brand v2.0 (Stahlblau + Inter Tight)
   ============================================================ */
:root {
  --kl-green:        #1F3B2D;
  --kl-green-deep:   #15281F;
  --kl-cream:        #F1EAD8;
  --kl-cream-soft:   #F7F1E1;
  --kl-brass:        #7FA8C4;
  --kl-moss:         #A6B5A1;
  --kl-grey-green:   #C8CFC4;
  --kl-ink:          #14181A;
  --kl-rule:         rgba(20,24,26,0.14);
  --kl-rule-strong:  rgba(20,24,26,0.30);
  --kl-rule-cream:   rgba(241,234,216,0.22);
  --kl-sans:  'Inter Tight', 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --kl-mono:  'JetBrains Mono', 'IBM Plex Mono', ui-monospace, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { background: var(--kl-cream); }
body {
  color: var(--kl-ink);
  font-family: var(--kl-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
em { color: var(--kl-brass); font-style: normal; font-weight: 600; }
ul { list-style: none; }
h1, h2, h3, h4, h5 {
  font-family: var(--kl-sans);
  font-weight: 600;
  letter-spacing: -0.028em;
  line-height: 1.05;
}
p { max-width: 65ch; }
.mono { font-family: var(--kl-mono); font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase; }
hr { border: none; border-top: 1px solid var(--kl-rule); }

/* ---------- NAV ---------- */
.nav {
  display: flex; justify-content: space-between; align-items: center;
  padding: 22px 56px;
  border-bottom: 1px solid var(--kl-rule);
  background: var(--kl-cream);
  position: sticky; top: 0; z-index: 50;
}
.nav .brand { display: flex; align-items: center; gap: 10px; color: var(--kl-green); }
.nav .brand svg { width: 26px; height: 26px; }
.nav .brand span { font-size: 22px; letter-spacing: -0.02em; font-weight: 600; }
.nav .links { display: flex; gap: 28px; align-items: center; }
.nav .links a {
  font-family: var(--kl-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(20,24,26,0.7);
  transition: color .15s;
}
.nav .links a:hover, .nav .links a.active { color: var(--kl-green); }
.nav .cta {
  font-family: var(--kl-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 10px 16px;
  background: var(--kl-green); color: var(--kl-cream);
  display: inline-flex; align-items: center; gap: 8px;
  transition: background .15s;
}
.nav .cta:hover { background: var(--kl-green-deep); }
.nav .cta .arr { font-size: 14px; letter-spacing: 0; }

/* Mega-menu / Leistungen dropdown */
.nav .has-sub { position: relative; }
.nav .has-sub > a::after { content: " ↓"; opacity: .5; }
.nav .submenu {
  position: absolute; top: 100%; left: -16px;
  background: var(--kl-cream-soft);
  border: 1px solid var(--kl-rule);
  padding: 18px 24px;
  display: none;
  min-width: 280px;
  margin-top: 8px;
  flex-direction: column;
  gap: 4px;
}
.nav .has-sub:hover .submenu { display: flex; }
.nav .submenu a {
  padding: 8px 0;
  font-family: var(--kl-mono); font-size: 11px; letter-spacing: 0.16em;
  border-bottom: 1px solid var(--kl-rule);
}
.nav .submenu a:last-child { border-bottom: none; }
.nav .submenu a strong { display: block; font-family: var(--kl-sans); font-size: 15px; letter-spacing: -0.01em; text-transform: none; color: var(--kl-green); font-weight: 600; margin-bottom: 2px; }
.nav .submenu a span { opacity: .65; }

/* ---------- HERO ---------- */
.hero {
  position: relative;
  padding: 96px 56px 80px;
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 64px;
  align-items: end;
  border-bottom: 1px solid var(--kl-rule);
}
.hero .meta {
  position: absolute; top: 32px; left: 56px; right: 56px;
  display: flex; justify-content: space-between;
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(20,24,26,0.55);
}
.hero h1 {
  font-size: clamp(48px, 7vw, 96px);
  line-height: 0.96;
  color: var(--kl-green-deep);
  max-width: 14ch;
  margin-top: 28px;
}
.hero p.sub {
  margin-top: 28px; font-size: 19px; line-height: 1.55;
  max-width: 50ch; color: rgba(20,24,26,0.78);
}
.ctas { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- BUTTONS ---------- */
.btn {
  font-family: var(--kl-mono); font-size: 11.5px; letter-spacing: 0.18em;
  text-transform: uppercase;
  padding: 16px 22px;
  display: inline-flex; align-items: center; gap: 12px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.btn.primary { background: var(--kl-green); color: var(--kl-cream); }
.btn.primary:hover { background: var(--kl-green-deep); }
.btn.secondary { background: transparent; color: var(--kl-green); border-color: var(--kl-rule-strong); }
.btn.secondary:hover { border-color: var(--kl-green); }
.btn .arr { font-size: 16px; letter-spacing: 0; transform: translateX(0); transition: transform .2s; }
.btn:hover .arr { transform: translateX(3px); }

/* ---------- STATBLOCK ---------- */
.statblock { border-left: 1px solid var(--kl-rule-strong); padding-left: 32px; align-self: end; }
.statblock .stat { padding: 18px 0; border-bottom: 1px solid var(--kl-rule); }
.statblock .stat:first-child { padding-top: 0; }
.statblock .stat:last-child { border-bottom: none; padding-bottom: 0; }
.statblock .num {
  font-family: var(--kl-sans); font-weight: 600; font-size: 50px; line-height: 1;
  color: var(--kl-green); letter-spacing: -0.025em;
}
.statblock .num em { color: var(--kl-brass); font-weight: 600; }
.statblock .lbl {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(20,24,26,0.6);
  margin-top: 8px;
}

/* ---------- SECTIONS ---------- */
.sec { padding: 96px 56px; border-bottom: 1px solid var(--kl-rule); }
.sec.cream-soft { background: var(--kl-cream-soft); }
.sec.green { background: var(--kl-green); color: var(--kl-cream); }
.sec.green h2, .sec.green h3, .sec.green h4 { color: var(--kl-cream); }

.sec-head { display: grid; grid-template-columns: 180px 1fr; gap: 32px; margin-bottom: 48px; align-items: baseline; }
.sec-head .label {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--kl-green);
  padding-top: 8px; border-top: 1px solid var(--kl-rule-strong);
}
.sec.green .sec-head .label { color: var(--kl-brass); border-color: var(--kl-brass); }
.sec-head h2 { font-size: 56px; line-height: 1.05; color: var(--kl-green); max-width: 16ch; }
.sec.green .sec-head h2 { color: var(--kl-cream); }

/* ---------- STEPS / 3-COL-GRID ---------- */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.step { border-top: 1px solid var(--kl-rule-strong); padding-top: 22px; }
.sec.green .step { border-color: var(--kl-rule-cream); }
.step .num {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--kl-green); margin-bottom: 16px;
}
.sec.green .step .num { color: var(--kl-brass); }
.step h3 { font-size: 22px; line-height: 1.2; margin-bottom: 14px; color: var(--kl-green); }
.sec.green .step h3 { color: var(--kl-cream); }
.step p { font-size: 15px; line-height: 1.6; color: rgba(20,24,26,0.78); }
.sec.green .step p { color: rgba(241,234,216,0.85); }
.step .meta {
  margin-top: 18px;
  font-family: var(--kl-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(20,24,26,0.55);
}

/* ---------- DISZIPLINEN-LIST (Home) ---------- */
.disz { display: grid; grid-template-columns: 220px 1fr; gap: 56px; }
.disz .col-l {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--kl-green);
  padding-top: 8px; border-top: 1px solid var(--kl-rule-strong);
}
.disz ul { display: flex; flex-direction: column; }
.disz li {
  display: grid; grid-template-columns: 80px 140px 1fr 200px 60px;
  gap: 24px; align-items: baseline;
  padding: 22px 0; border-bottom: 1px solid var(--kl-rule);
  cursor: pointer;
  transition: padding-left .2s, color .15s;
}
.disz li:last-child { border-bottom: none; }
.disz li:hover { padding-left: 8px; }
.disz li:hover .name { color: var(--kl-green-deep); }
.disz li:hover .arr { color: var(--kl-brass); transform: translateX(4px); }
.disz li > * { transition: transform .2s, color .15s; }
.disz li .num {
  font-family: var(--kl-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(20,24,26,0.55);
}
.disz li .name {
  font-family: var(--kl-sans); font-weight: 600; font-size: 26px; color: var(--kl-green);
  letter-spacing: -0.02em;
}
.disz li .desc { font-size: 15px; line-height: 1.5; color: rgba(20,24,26,0.78); }
.disz li .kpi {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--kl-brass); text-align: right;
}
.disz li .arr {
  font-family: var(--kl-sans); font-size: 18px; color: var(--kl-green);
  text-align: right;
}

/* ---------- BIG CTA ---------- */
.bigcta {
  padding: 96px 56px;
  background: var(--kl-cream-soft);
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px;
  align-items: end;
  border-bottom: 1px solid var(--kl-rule);
}
.bigcta h2 { font-size: 64px; line-height: 1.04; color: var(--kl-green-deep); max-width: 14ch; }
.bigcta p { font-size: 18px; line-height: 1.55; color: rgba(20,24,26,0.78); }

/* ---------- FOOTER ---------- */
.foot {
  background: var(--kl-green); color: var(--kl-cream);
  padding: 64px 56px 28px;
  display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 48px;
  border-top: 1px solid var(--kl-rule-cream);
}
.foot .brand { display: flex; align-items: center; gap: 10px; color: var(--kl-cream); margin-bottom: 18px; }
.foot .brand svg { width: 22px; height: 22px; }
.foot .brand span { font-size: 22px; font-weight: 600; letter-spacing: -0.02em; }
.foot .tagline {
  font-family: var(--kl-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(241,234,216,0.7);
  margin-bottom: 18px;
}
.foot .col h5 {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--kl-brass);
  margin-bottom: 18px;
}
.foot .col a {
  display: block; padding: 6px 0;
  font-size: 14px; color: rgba(241,234,216,0.85);
  transition: color .15s;
}
.foot .col a:hover { color: var(--kl-cream); }
.foot-bottom {
  grid-column: 1 / -1;
  display: flex; justify-content: space-between;
  margin-top: 56px; padding-top: 22px;
  border-top: 1px solid var(--kl-rule-cream);
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(241,234,216,0.55);
}

/* ---------- DETAIL-PAGE FEATURES (Leistungs-Sub-Pages) ---------- */
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px 56px; }
.feature {
  border-top: 1px solid var(--kl-rule-strong);
  padding-top: 22px;
}
.feature .num {
  font-family: var(--kl-mono); font-size: 10.5px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--kl-brass); margin-bottom: 12px;
}
.feature h3 { font-size: 22px; color: var(--kl-green); margin-bottom: 10px; }
.feature p { font-size: 15px; line-height: 1.6; color: rgba(20,24,26,0.78); }

.kpi-row {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  padding: 56px 0;
}
.kpi-row .kpi-cell { border-left: 1px solid var(--kl-rule-strong); padding-left: 20px; }
.kpi-row .kpi-cell:first-child { border-left: none; padding-left: 0; }
.kpi-row .kpi-cell .num {
  font-family: var(--kl-sans); font-weight: 600; font-size: 42px;
  color: var(--kl-green); letter-spacing: -0.025em; line-height: 1;
}
.kpi-row .kpi-cell .num em { color: var(--kl-brass); }
.kpi-row .kpi-cell .lbl {
  margin-top: 10px;
  font-family: var(--kl-mono); font-size: 10px; letter-spacing: 0.18em;
  text-transform: uppercase; color: rgba(20,24,26,0.6);
}

.sec.green .kpi-row .kpi-cell { border-color: var(--kl-rule-cream); }
.sec.green .kpi-row .kpi-cell .num { color: var(--kl-cream); }
.sec.green .kpi-row .kpi-cell .lbl { color: rgba(241,234,216,0.65); }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 980px) {
  .nav { padding: 18px 24px; gap: 16px; flex-wrap: wrap; }
  .nav .links { display: none; }
  .nav .cta { padding: 9px 12px; font-size: 10px; }
  .hero { padding: 64px 24px 48px; grid-template-columns: 1fr; gap: 32px; }
  .hero .meta { position: static; padding: 0 0 24px; flex-direction: column; gap: 8px; }
  .hero h1 { font-size: 48px; max-width: none; }
  .statblock { border-left: none; border-top: 1px solid var(--kl-rule-strong); padding-left: 0; padding-top: 24px; }
  .sec { padding: 64px 24px; }
  .sec-head { grid-template-columns: 1fr; gap: 16px; margin-bottom: 32px; }
  .sec-head h2 { font-size: 36px; max-width: none; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .feature-list { grid-template-columns: 1fr; gap: 24px; }
  .kpi-row { grid-template-columns: 1fr 1fr; gap: 24px; padding: 32px 0; }
  .kpi-row .kpi-cell { border-left: none; padding-left: 0; }
  .disz { grid-template-columns: 1fr; gap: 24px; }
  .disz li { grid-template-columns: 60px 1fr; row-gap: 8px; }
  .disz li .desc, .disz li .kpi, .disz li .arr { grid-column: 1 / -1; }
  .bigcta { padding: 64px 24px; grid-template-columns: 1fr; gap: 32px; }
  .bigcta h2 { font-size: 40px; }
  .foot { padding: 48px 24px 24px; grid-template-columns: 1fr 1fr; gap: 32px; }
  .foot-bottom { flex-direction: column; gap: 8px; }
}

/* ---------- FAQ / Details (GEO-relevant) ---------- */
.faq-list details {
  border-top: 1px solid var(--kl-rule-strong);
  padding: 22px 0;
}
.faq-list details:last-child {
  border-bottom: 1px solid var(--kl-rule-strong);
}
.faq-list summary {
  font-family: var(--kl-sans); font-weight: 600;
  font-size: 19px; color: var(--kl-green);
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  letter-spacing: -0.02em;
}
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary::after {
  content: '+'; color: var(--kl-brass); font-size: 28px; line-height: 0.7;
  transition: transform .2s;
  margin-left: 18px;
}
.faq-list details[open] summary::after { transform: rotate(45deg); }
.faq-list details p {
  margin-top: 14px; color: rgba(20,24,26,0.78);
  font-size: 15px; line-height: 1.65; max-width: 70ch;
}

/* ---------- Source-Annotation under Stats ---------- */
.source-note {
  font-family: var(--kl-mono); font-size: 9.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(20,24,26,0.45);
  margin-top: 6px; line-height: 1.5;
}
.sec.green .source-note { color: rgba(241,234,216,0.55); }

/* ---------- Stand-Stempel (Page-Footer) ---------- */
.page-stamp {
  font-family: var(--kl-mono); font-size: 10.5px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(20,24,26,0.45);
  text-align: right;
  padding: 32px 56px 14px;
  background: var(--kl-cream);
  border-top: 1px solid var(--kl-rule);
}

/* ---------- Methode-Page · Timeline ---------- */
.timeline {
  display: grid;
  grid-template-columns: 220px 1fr 280px;
  gap: 32px;
  row-gap: 0;
}
.timeline .row {
  display: contents;
}
.timeline .week, .timeline .content, .timeline .deliv {
  padding: 28px 0;
  border-top: 1px solid var(--kl-rule);
}
.timeline .row:first-child .week,
.timeline .row:first-child .content,
.timeline .row:first-child .deliv {
  border-top: 1px solid var(--kl-rule-strong);
}
.timeline .week {
  font-family: var(--kl-mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--kl-brass);
}
.timeline .content h3 {
  font-size: 22px; color: var(--kl-green);
  margin-bottom: 10px;
}
.timeline .content p {
  font-size: 15px; line-height: 1.6;
  color: rgba(20,24,26,0.78);
}
.timeline .deliv {
  display: flex; flex-direction: column; gap: 6px;
  font-family: var(--kl-mono); font-size: 10px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(20,24,26,0.55);
}
@media (max-width: 980px) {
  .timeline { grid-template-columns: 1fr; gap: 0; }
  .timeline .week, .timeline .content, .timeline .deliv {
    padding: 18px 0;
  }
  .timeline .week { padding-bottom: 6px; }
}