/* Self-hosted IBM Plex (woff2) — DSGVO: keine externen Font-CDNs */
@font-face { font-family: 'IBM Plex Sans'; src: url('fonts/IBMPlexSans-Regular.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Sans'; src: url('fonts/IBMPlexSans-Medium.woff2') format('woff2'); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Sans'; src: url('fonts/IBMPlexSans-SemiBold.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Sans'; src: url('fonts/IBMPlexSans-Bold.woff2') format('woff2'); font-weight: 700; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('fonts/IBMPlexMono-Regular.woff2') format('woff2'); font-weight: 400; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('fonts/IBMPlexMono-Medium.woff2') format('woff2'); font-weight: 500; font-style: normal; font-display: swap; }
@font-face { font-family: 'IBM Plex Mono'; src: url('fonts/IBMPlexMono-SemiBold.woff2') format('woff2'); font-weight: 600; font-style: normal; font-display: swap; }

/* ==========================================================================
   IOX Partners — Design-System
   Ingenieurbüro für Personalentscheidungen
   ========================================================================== */

:root {
  --steel: #101C2C;
  --steel-80: #2a3646;
  --steel-60: #4c5665;
  --grey: #8A94A3;
  --grey-dark: #5f6975;
  --copper: #C96F2E;
  --copper-dark: #a95a22;
  --offwhite: #F7F6F3;
  --white: #ffffff;
  --green: #2E7D5B;
  --line: #d9d7d1;
  --line-dark: rgba(247, 246, 243, 0.16);

  --ff-sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", Arial, sans-serif;
  --ff-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --maxw: 1180px;
  --pad: 24px;
  --sec-y: 96px;

  --t-hero: clamp(2.1rem, 5.2vw, 3.75rem);
  --t-h1: clamp(1.9rem, 4.4vw, 3.1rem);
  --t-h2: clamp(1.5rem, 3vw, 2.1rem);
  --t-h3: 1.125rem;
  --t-body: 1.0625rem;
  --t-small: 0.9375rem;
  --t-label: 0.75rem;
}

*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--offwhite);
  color: var(--steel);
  font-family: var(--ff-sans);
  font-size: var(--t-body);
  line-height: 1.65;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-weight: 600;
  line-height: 1.16;
  letter-spacing: -0.015em;
  margin: 0 0 0.6em;
  text-wrap: balance;
  hyphens: auto;
}
h1 { font-size: var(--t-h1); }
h2 { font-size: var(--t-h2); }
h3 { font-size: var(--t-h3); letter-spacing: -0.005em; }
p { margin: 0 0 1.1em; max-width: 68ch; }
a { color: inherit; }
strong { font-weight: 600; }
ul { margin: 0 0 1.1em; padding-left: 1.1em; }
li { margin-bottom: 0.4em; }
img, svg { max-width: 100%; }

/* ---------- Bausteine ---------- */
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.sec { padding: var(--sec-y) 0; border-top: 1px solid var(--line); }
.sec--flush { border-top: none; }
.sec--dark {
  background: var(--steel);
  color: var(--offwhite);
  border-top: none;
  position: relative;
  overflow: hidden;
}
.sec--dark::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(247,246,243,0.9) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(247,246,243,0.9) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.05;
  pointer-events: none;
}
.sec--dark > .wrap { position: relative; z-index: 1; }
.sec--dark h1, .sec--dark h2, .sec--dark h3 { color: var(--offwhite); }
.sec--dark p, .sec--dark li { color: #c8cdd6; }
.sec--dark .lead { color: #dfe3e9; }

.eyebrow {
  font-family: var(--ff-mono);
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--copper);
  margin: 0 0 1.1rem;
  display: flex;
  align-items: center;
  gap: 12px;
}
.eyebrow::after {
  content: "";
  height: 1px;
  flex: 0 0 48px;
  background: currentColor;
  opacity: 0.5;
}
.eyebrow--plain { display: block; }
.eyebrow--plain::after { display: none; }
.eyebrow--grey { color: var(--grey-dark); }
.sec--dark .eyebrow--grey { color: var(--grey); }

.lead { font-size: clamp(1.0625rem, 1.6vw, 1.25rem); color: var(--steel-60); max-width: 62ch; }
.sec--dark .lead { color: #cfd5de; }
.muted { color: var(--grey-dark); }
.mono { font-family: var(--ff-mono); font-variant-numeric: tabular-nums; font-feature-settings: "zero" 1; }
.copper { color: var(--copper); }
.mw-60 { max-width: 60ch; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--ff-sans);
  font-size: var(--t-small);
  font-weight: 500;
  line-height: 1.2;
  padding: 15px 24px;
  border: 1px solid var(--steel);
  border-radius: 2px;
  text-decoration: none;
  background: transparent;
  color: var(--steel);
  cursor: pointer;
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn--primary { background: var(--copper); border-color: var(--copper); color: var(--white); }
.btn--primary:hover { background: var(--copper-dark); border-color: var(--copper-dark); }
.btn--ghost-light { border-color: rgba(247,246,243,0.4); color: var(--offwhite); }
.btn--ghost-light:hover { border-color: var(--offwhite); background: rgba(247,246,243,0.08); }
.btn--ghost:hover { background: var(--steel); color: var(--offwhite); }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 2rem; }

.arrow { font-family: var(--ff-mono); font-weight: 500; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247, 246, 243, 0.94);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
}
.logo { display: inline-flex; align-items: center; text-decoration: none; color: var(--steel); }
.logo svg { height: 26px; width: auto; display: block; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a {
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--steel-60);
  padding: 8px 11px;
  border-radius: 2px;
  white-space: nowrap;
  transition: color .15s ease;
}
.nav a:hover { color: var(--steel); }
.nav a[aria-current="page"] { color: var(--steel); font-weight: 500; box-shadow: inset 0 -2px 0 var(--copper); }
.nav .btn { margin-left: 10px; padding: 11px 18px; }
.nav a.btn--primary { color: var(--white); }
.nav .btn:hover { color: var(--white); }

.burger {
  display: none;
  width: 44px; height: 44px;
  align-items: center; justify-content: center;
  background: none; border: 1px solid var(--line); border-radius: 2px; cursor: pointer;
}
.burger span { display: block; width: 18px; height: 1px; background: var(--steel); position: relative; }
.burger span::before, .burger span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 1px; background: var(--steel);
}
.burger span::before { top: -6px; }
.burger span::after { top: 6px; }

/* ---------- Hero ---------- */
.hero { padding: clamp(64px, 9vw, 128px) 0 clamp(56px, 8vw, 104px); }
.hero h1 { font-size: var(--t-hero); max-width: 20ch; }
.hero .lead { font-size: clamp(1.0625rem, 1.7vw, 1.3125rem); }
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 8px 28px;
  margin-top: 3rem; padding-top: 1.25rem;
  border-top: 1px solid var(--line-dark);
  font-family: var(--ff-mono); font-size: var(--t-label);
  letter-spacing: 0.09em; text-transform: uppercase; color: var(--grey);
}

/* ---------- Grids ---------- */
.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.split { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: clamp(32px, 6vw, 80px); align-items: start; }

.card {
  background: var(--white);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 28px;
  display: flex;
  flex-direction: column;
}
.card h3 { margin-bottom: 0.5em; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card--dark { background: rgba(247,246,243,0.04); border-color: var(--line-dark); }
.card--product { padding: 32px; }
.card--product .card-foot { margin-top: auto; padding-top: 24px; }
.card-num {
  font-family: var(--ff-mono); font-size: var(--t-label); font-weight: 500;
  letter-spacing: 0.12em; color: var(--copper); display: block; margin-bottom: 14px;
}
.card--flat { background: transparent; border: none; border-top: 1px solid var(--line); border-radius: 0; padding: 24px 0 0; }
.sec--dark .card--flat { border-top-color: var(--line-dark); }

/* Stufen-Grafik (Symptome) */
.steps-tech { display: grid; gap: 0; border: 1px solid var(--line); border-radius: 2px; background: var(--white); }
.sec--dark .steps-tech { background: rgba(247,246,243,0.03); border-color: var(--line-dark); }
.step-tech {
  display: grid; grid-template-columns: 92px 1fr; gap: 24px;
  padding: 26px 28px; border-bottom: 1px solid var(--line); align-items: start;
}
.sec--dark .step-tech { border-bottom-color: var(--line-dark); }
.step-tech:last-child { border-bottom: none; }
.step-tech__idx { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.1em; color: var(--copper); padding-top: 4px; }
.step-tech__t { font-weight: 600; margin: 0 0 6px; max-width: 60ch; }
.step-tech__d { margin: 0; color: var(--steel-60); font-size: var(--t-small); }
.sec--dark .step-tech__d { color: #b9c0ca; }
.step-tech--indent-1 { padding-left: 60px; }
.step-tech--indent-2 { padding-left: 92px; }
.result-line {
  margin-top: 20px; padding: 18px 22px; border: 1px solid var(--copper);
  border-radius: 2px; font-family: var(--ff-mono); font-size: var(--t-small); color: var(--copper);
}

/* ---------- Rechner ---------- */
.calc { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr); gap: clamp(28px, 5vw, 64px); align-items: start; }
.calc-field { margin-bottom: 30px; }
.calc-field:last-child { margin-bottom: 0; }
.calc-label {
  display: flex; justify-content: space-between; align-items: baseline; gap: 16px;
  font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--grey); margin-bottom: 12px;
}
.calc-val { font-family: var(--ff-mono); font-size: 1.0625rem; letter-spacing: 0; color: var(--offwhite); text-transform: none; }
input[type="range"] {
  -webkit-appearance: none; appearance: none; width: 100%; height: 22px;
  background: transparent; cursor: pointer; margin: 0;
}
input[type="range"]::-webkit-slider-runnable-track { height: 1px; background: rgba(247,246,243,0.3); }
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none; width: 16px; height: 16px; margin-top: -8px;
  background: var(--copper); border: none; border-radius: 50%;
}
input[type="range"]::-moz-range-track { height: 1px; background: rgba(247,246,243,0.3); }
input[type="range"]::-moz-range-thumb { width: 16px; height: 16px; background: var(--copper); border: none; border-radius: 50%; }
input[type="range"]:focus-visible { outline: 2px solid var(--copper); outline-offset: 6px; }
select, input[type="text"], input[type="email"], textarea {
  width: 100%; font-family: var(--ff-sans); font-size: var(--t-small); color: var(--steel);
  background: var(--white); border: 1px solid var(--line); border-radius: 2px; padding: 13px 14px;
}
.calc select {
  background: transparent; color: var(--offwhite); border-color: rgba(247,246,243,0.3);
  font-family: var(--ff-mono);
}
.calc select option { color: var(--steel); }
.calc-out { border: 1px solid var(--line-dark); border-radius: 2px; padding: 30px; background: rgba(247,246,243,0.04); }
.calc-out__label { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey); margin: 0 0 8px; }
.calc-out__big {
  font-family: var(--ff-mono); font-weight: 600; color: var(--copper);
  font-size: clamp(2.1rem, 5.4vw, 3.25rem); line-height: 1.05; letter-spacing: -0.02em;
  display: block; word-break: break-word;
}
.calc-out__unit { font-family: var(--ff-mono); font-size: 1rem; color: var(--grey); margin-left: 6px; }
.calc-out__hr { height: 1px; background: var(--line-dark); border: none; margin: 26px 0; }
.calc-out__sub { font-family: var(--ff-mono); font-weight: 500; font-size: clamp(1.5rem, 3.4vw, 2rem); color: var(--offwhite); display: block; line-height: 1.15; }
.calc-note { font-size: var(--t-small); color: var(--grey); margin: 18px 0 0; }

/* ---------- KPI-Leiste ---------- */
.kpis { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.sec--dark .kpis { border-color: var(--line-dark); }
.kpi { padding: 30px 28px; border-right: 1px solid var(--line); }
.sec--dark .kpi { border-right-color: var(--line-dark); }
.kpi:last-child { border-right: none; }
.kpi__v { font-family: var(--ff-mono); font-weight: 600; font-size: clamp(1.6rem, 3.4vw, 2.25rem); color: var(--copper); display: block; line-height: 1.1; letter-spacing: -0.01em; }
.kpi__l { font-size: var(--t-small); color: var(--grey-dark); margin: 10px 0 0; }
.sec--dark .kpi__l { color: var(--grey); }

/* ---------- Zeitstrahl ---------- */
.timeline { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 0; margin-top: 8px; }
.phase { padding: 0 22px 0 0; position: relative; }
.phase::before {
  content: ""; position: absolute; left: 0; right: 0; top: 34px; height: 1px;
  background: var(--line-dark);
}
.phase__dot { position: relative; z-index: 1; display: block; width: 11px; height: 11px; border-radius: 50%; background: var(--copper); margin: 29px 0 26px; }
.phase__no { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.14em; color: var(--grey); display: block; }
.phase__t { font-weight: 600; font-size: 1.0625rem; margin: 10px 0 4px; }
.phase__w { font-family: var(--ff-mono); font-size: var(--t-label); color: var(--copper); letter-spacing: 0.08em; }
.phase__d { font-size: var(--t-small); color: #b9c0ca; margin: 14px 0 0; }
.phase__del { font-size: var(--t-small); margin: 16px 0 0; padding-top: 14px; border-top: 1px solid var(--line-dark); color: var(--offwhite); }
.phase__del b { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.1em; text-transform: uppercase; color: var(--grey); display: block; margin-bottom: 6px; font-weight: 500; }

/* ---------- Tabellen ---------- */
.table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
.table-wrap table { min-width: 520px; }
@media (max-width: 640px) {
  .table-wrap { position: relative; }
  .table-wrap::before {
    content: "seitlich scrollbar \2192";
    display: block; font-family: var(--ff-mono); font-size: 11px;
    letter-spacing: 0.1em; text-transform: uppercase; color: var(--grey);
    padding-bottom: 10px; position: sticky; left: 0;
  }
}
table { width: 100%; border-collapse: collapse; font-size: var(--t-small); }
th, td { text-align: left; padding: 16px 18px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.1em; text-transform: uppercase; color: var(--grey-dark); font-weight: 500; }
td.num, th.num, .t-mono td:last-child { font-family: var(--ff-mono); font-variant-numeric: tabular-nums; }
.sec--dark th { color: var(--grey); border-bottom-color: var(--line-dark); }
.sec--dark td { border-bottom-color: var(--line-dark); color: #c8cdd6; }
tr.total td { font-weight: 600; color: var(--steel); border-bottom: 1px solid var(--steel); }
.sec--dark tr.total td { color: var(--offwhite); border-bottom-color: var(--offwhite); }
td.after { color: var(--steel); }
.table-caption { font-size: var(--t-small); color: var(--grey-dark); margin-top: 14px; }

/* ---------- Checkliste ---------- */
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 14px; }
.checks li { display: grid; grid-template-columns: 22px 1fr; gap: 14px; margin: 0; }
.checks svg { width: 16px; height: 16px; margin-top: 6px; color: var(--green); }
.exclude { margin-top: 28px; padding: 20px 22px; border: 1px dashed var(--line); border-radius: 2px; font-size: var(--t-small); color: var(--steel-60); }
.sec--dark .exclude { border-color: var(--line-dark); color: #b9c0ca; }

/* ---------- Rechenblock ---------- */
.calcblock { border: 1px solid var(--line-dark); border-radius: 2px; padding: 8px 28px 28px; }
.pricebox { border: 1px solid var(--copper); border-radius: 2px; padding: 30px; }
.pricebox__v { font-family: var(--ff-mono); font-weight: 600; font-size: clamp(2rem, 4.6vw, 2.75rem); color: var(--copper); display: block; line-height: 1.1; }
.pricebox__l { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey); margin: 0 0 12px; }
.pricebox ul { list-style: none; padding: 0; margin: 20px 0 0; font-size: var(--t-small); }
.pricebox li { border-top: 1px solid var(--line-dark); padding-top: 10px; margin-top: 10px; color: #c8cdd6; }

/* ---------- FAQ ---------- */
.faq { border-top: 1px solid var(--line); }
details {
  border-bottom: 1px solid var(--line);
}
details summary {
  cursor: pointer;
  list-style: none;
  padding: 22px 44px 22px 0;
  font-weight: 500;
  font-size: 1.0625rem;
  position: relative;
  color: var(--steel);
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "+"; font-family: var(--ff-mono); font-size: 1.25rem; color: var(--copper);
  position: absolute; right: 6px; top: 20px; line-height: 1;
}
details[open] summary::after { content: "–"; }
details .faq-body { padding: 0 0 24px; }
details .faq-body p:last-child { margin-bottom: 0; }
details summary:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }

/* ---------- Gründerkarte ---------- */
.founder { border: 1px solid var(--line); border-radius: 2px; padding: clamp(28px, 4vw, 44px); background: var(--white); }
.founder__name { font-family: var(--ff-sans); font-weight: 600; font-size: clamp(1.35rem, 2.6vw, 1.75rem); margin: 0 0 6px; }
.founder__role { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.14em; text-transform: uppercase; color: var(--copper); margin: 0 0 22px; }
.founder__lines { list-style: none; padding: 0; margin: 0 0 24px; }
.founder__lines li { border-top: 1px solid var(--line); padding: 12px 0; margin: 0; font-size: var(--t-small); }
.founder__lines li:last-child { border-bottom: 1px solid var(--line); }

/* ---------- Artikelkarten ---------- */
.article-card { display: flex; flex-direction: column; text-decoration: none; }
a.card { transition: border-color .18s ease, transform .18s ease; }
a.card:hover { border-color: var(--copper); transform: translateY(-2px); }
.card__kicker { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey-dark); margin: 0 0 14px; }
.card--soon { opacity: 0.72; background: transparent; }
.badge {
  display: inline-block; font-family: var(--ff-mono); font-size: 0.6875rem; letter-spacing: 0.12em;
  text-transform: uppercase; padding: 4px 9px; border: 1px solid var(--line); border-radius: 2px;
  color: var(--grey-dark);
}
.badge--copper { border-color: var(--copper); color: var(--copper); }
.card-link { font-family: var(--ff-mono); font-size: var(--t-small); color: var(--copper); text-decoration: none; }

/* ---------- Prosa (Artikel) ---------- */
.prose { max-width: 72ch; min-width: 0; overflow-wrap: break-word; }
.split > * { min-width: 0; }
.grid > * { min-width: 0; }
.prose h2 { font-size: clamp(1.35rem, 2.4vw, 1.6rem); margin-top: 2.4em; }
.prose h3 { margin-top: 1.8em; }
.prose > *:first-child { margin-top: 0; }
.prose ul { padding-left: 1.2em; }
.prose blockquote {
  margin: 2em 0; padding: 0 0 0 24px; border-left: 2px solid var(--copper);
  font-size: 1.125rem; color: var(--steel-80);
}
.toc { border: 1px solid var(--line); border-radius: 2px; padding: 22px 24px; background: var(--white); font-size: var(--t-small); }
.toc ol { margin: 0; padding-left: 1.3em; font-family: var(--ff-mono); }
.toc li { margin-bottom: 6px; }
.toc a { text-decoration: none; color: var(--steel-60); }
.toc a:hover { color: var(--copper); }
.toc__t { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey-dark); margin: 0 0 14px; }
.callout { border: 1px solid var(--line); border-left: 2px solid var(--copper); border-radius: 2px; padding: 22px 24px; background: var(--white); margin: 2em 0; }
.callout p:last-child { margin-bottom: 0; }
.breadcrumb { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.08em; text-transform: uppercase; color: var(--grey-dark); margin-bottom: 1.6rem; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--copper); }

/* ---------- CTA / Footer ---------- */
.cta-steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 40px; }
.cta-step { border-top: 1px solid var(--line-dark); padding-top: 20px; }
.cta-step b { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.12em; color: var(--copper); display: block; margin-bottom: 10px; font-weight: 500; }
.cta-step p { font-size: var(--t-small); margin: 0; color: #c8cdd6; }

.site-footer { background: var(--steel); color: #b9c0ca; padding: 72px 0 36px; font-size: var(--t-small); }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 40px; }
.footer-grid h4 { font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey); font-weight: 500; margin: 0 0 16px; }
.footer-grid ul { list-style: none; padding: 0; margin: 0; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: #c8cdd6; text-decoration: none; }
.footer-grid a:hover { color: var(--copper); }
.site-footer .logo { color: var(--offwhite); }
.footer-bottom {
  margin-top: 56px; padding-top: 22px; border-top: 1px solid var(--line-dark);
  display: flex; flex-wrap: wrap; gap: 12px 28px; justify-content: space-between;
  font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.06em; color: var(--grey);
}

/* ---------- Formular ---------- */
form .field { margin-bottom: 20px; }
form label { display: block; font-family: var(--ff-mono); font-size: var(--t-label); letter-spacing: 0.1em; text-transform: uppercase; color: var(--grey-dark); margin-bottom: 8px; }
textarea { min-height: 140px; resize: vertical; }
input:focus-visible, select:focus-visible, textarea:focus-visible, a:focus-visible, button:focus-visible {
  outline: 2px solid var(--copper); outline-offset: 2px;
}
.form-note { font-size: var(--t-small); color: var(--grey-dark); }

/* ---------- Scroll-Reveal ---------- */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1000px) {
  .nav { display: none; }
  .nav.is-open {
    display: flex; flex-direction: column; align-items: stretch; gap: 0;
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--offwhite); border-bottom: 1px solid var(--line);
    padding: 8px var(--pad) 20px;
  }
  .nav.is-open a { padding: 14px 0; border-bottom: 1px solid var(--line); }
  .nav.is-open a[aria-current="page"] { box-shadow: none; color: var(--copper); }
  .nav.is-open .btn { margin: 16px 0 0; justify-content: center; border-bottom: none; }
  .burger { display: flex; }
  .site-header { position: relative; }
  .timeline { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 24px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 32px; }
}

@media (max-width: 860px) {
  :root { --sec-y: 64px; }
  .grid-3, .grid-4, .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .split, .calc { grid-template-columns: minmax(0, 1fr); }
  .kpis { grid-template-columns: minmax(0, 1fr); }
  .kpi { border-right: none; border-bottom: 1px solid var(--line); }
  .sec--dark .kpi { border-bottom-color: var(--line-dark); }
  .kpi:last-child { border-bottom: none; }
  .cta-steps { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  :root { --pad: 20px; }
  .hero h1 { max-width: none; }
  .step-tech { grid-template-columns: 1fr; gap: 8px; padding: 22px; }
  .step-tech--indent-1, .step-tech--indent-2 { padding-left: 22px; }
  .step-tech__idx { padding-top: 0; }
  .timeline { grid-template-columns: 1fr; }
  .phase { padding: 0; border-left: 1px solid var(--line-dark); padding-left: 22px; }
  .phase::before { display: none; }
  .phase__dot { margin: 0 0 14px -27px; }
  .card, .card--product { padding: 24px; }
  .btn { width: 100%; justify-content: center; }
  .btn-row { gap: 10px; }
  .footer-grid { grid-template-columns: 1fr; }
  th, td { padding: 13px 14px; }
}

/* ---------- Quellen, Rechtsseiten ---------- */
.sources { margin-top: 3.5em; padding-top: 22px; border-top: 1px solid var(--line); }
.sources__t { font-size: var(--t-label); letter-spacing: 0.12em; text-transform: uppercase; color: var(--grey-dark); margin: 0 0 12px; }
.sources ul { list-style: none; padding: 0; margin: 0; }
.sources li { font-size: var(--t-small); line-height: 1.55; margin-bottom: 12px; overflow-wrap: anywhere; }
.sources a { color: var(--steel-60); text-decoration: underline; text-decoration-color: var(--line); text-underline-offset: 3px; }
.sources a:hover { color: var(--copper); text-decoration-color: var(--copper); }
.draft-note {
  display: inline-block; margin-top: 1.4rem; padding: 8px 14px;
  border: 1px solid var(--line); border-left: 2px solid var(--copper); border-radius: 2px;
  font-size: var(--t-label); letter-spacing: 0.06em; color: var(--grey-dark); background: var(--white);
}
.footer-legal a { color: #b9c0ca; text-decoration: none; }
.footer-legal a:hover { color: var(--copper); }