/* ============================================================
   SEINE Batteriesysteme – ESS Landing Page
   Stylesheet v1.0
   ============================================================ */

@import url('../fonts/fonts.css');

/* ============================================================
   CSS VARIABLES
   ============================================================ */
:root {
  --blue: #0078D4;
  --blue-light: #2DA9F5;
  --blue-bright: #00A4EF;
  --blue-bg: #EFF7FE;
  --blue-bg-2: #DDEEFC;
  --blue-dark: #004C8A;
  --green: #6BBE45;
  --green-light: #8FD66B;
  --green-dark: #4A9929;
  --green-bg: #F1FAEC;
  --gray-900: #0F1B2D;
  --gray-800: #1F2D40;
  --gray-700: #2A3B52;
  --gray-600: #475569;
  --gray-500: #64748B;
  --gray-400: #94A3B8;
  --gray-300: #CBD5E1;
  --gray-200: #E2E8F0;
  --gray-100: #F1F5F9;
  --gray-50: #F8FAFC;
  --white: #FFFFFF;
  --display: 'Manrope', system-ui, sans-serif;
  --mono: 'JetBrains Mono', monospace;
  --shadow-sm: 0 1px 2px rgba(15, 27, 45, 0.04);
  --shadow: 0 4px 12px rgba(15, 27, 45, 0.06);
  --shadow-lg: 0 20px 40px -10px rgba(15, 27, 45, 0.10);
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 20px;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--gray-900);
  font-family: var(--display);
  font-weight: 400;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 {
  font-family: var(--display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--gray-900);
}

p { color: var(--gray-600); }
a { text-decoration: none; }
img { max-width: 100%; height: auto; }

.mono { font-family: var(--mono); }

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ============================================================
   NAVIGATION – Desktop
   ============================================================ */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--gray-200);
  padding: 0.9rem 0;
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--gray-900);
  text-decoration: none;
  flex-shrink: 0;
}

.logo img { height: 36px; width: auto; }

.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2px;
  width: 22px;
  height: 22px;
}

.logo-grid span {
  display: block;
  background: var(--gray-900);
  border-radius: 1px;
}
.logo-grid span:nth-child(2) { background: var(--blue); }
.logo-grid span:nth-child(3) { background: var(--green); }
.logo-grid span:nth-child(4) { background: var(--gray-900); }

.logo-text { display: flex; flex-direction: column; line-height: 1; }
.logo-text small {
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  text-decoration: none;
  color: var(--gray-700);
  font-size: 0.92rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--blue); }
.nav-links a.nav-active {
  color: var(--blue);
  font-weight: 600;
  position: relative;
}
.nav-links a.nav-active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--blue);
  border-radius: 2px;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.nav-cta {
  background: var(--gray-900);
  color: var(--white);
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}
.nav-cta:hover { background: var(--blue); transform: translateY(-1px); }

/* ============================================================
   NAVIGATION – Mobile Hamburger
   ============================================================ */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 6px 8px;
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-900);
  border-radius: 2px;
  transition: all 0.3s ease;
  transform-origin: center;
}

.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile full-screen nav */
.mobile-nav {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 200;
  display: flex;
  flex-direction: column;
  padding: 0;
  transform: translateX(100%);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-nav.open {
  transform: translateX(0);
}

.mobile-nav-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 1.5rem;
  border-bottom: 1px solid var(--gray-200);
}

.mobile-nav-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--gray-600);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}
.mobile-nav-close:hover { background: var(--gray-100); }

.mobile-nav-links {
  list-style: none;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  flex: 1;
  overflow-y: auto;
}

.mobile-nav-links a {
  display: block;
  padding: 1rem 1.25rem;
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--gray-800);
  border-radius: var(--radius);
  transition: all 0.2s;
}
.mobile-nav-links a:hover {
  background: var(--blue-bg);
  color: var(--blue);
}

.mobile-nav-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--gray-200);
}

.mobile-nav-cta {
  display: block;
  width: 100%;
  text-align: center;
  padding: 1rem;
  background: var(--blue);
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s;
}
.mobile-nav-cta:hover { background: var(--blue-dark); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding: 9rem 0 5rem;
  background: linear-gradient(180deg, var(--blue-bg) 0%, var(--white) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 10%;
  right: -10%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(107, 190, 69, 0.10) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 0.85rem;
  background: var(--white);
  border: 1px solid var(--blue-bg-2);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--blue-dark);
  margin-bottom: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.badge-dot {
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  display: inline-block;
  box-shadow: 0 0 0 3px rgba(107, 190, 69, 0.25);
  animation: pulse 2s ease-in-out infinite;
  flex-shrink: 0;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(107, 190, 69, 0.25); }
  50% { box-shadow: 0 0 0 6px rgba(107, 190, 69, 0); }
}

.hero h1 {
  font-size: clamp(2.2rem, 5.5vw, 4.2rem);
  font-weight: 800;
  line-height: 1.02;
  letter-spacing: -0.035em;
  margin-bottom: 1.5rem;
}

.hero h1 .highlight {
  background: linear-gradient(90deg, var(--blue) 0%, var(--green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 1.3vw, 1.2rem);
  color: var(--gray-600);
  line-height: 1.6;
  margin-bottom: 2.5rem;
  max-width: 520px;
}

.hero-cta-group {
  display: flex;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.65rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  font-family: var(--display);
  min-height: 44px;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(0, 120, 212, 0.25);
}
.btn-primary:hover {
  background: var(--blue-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 120, 212, 0.35);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-900);
  border: 1px solid var(--gray-200);
}
.btn-secondary:hover { border-color: var(--blue); color: var(--blue); }

.btn-green {
  background: var(--green);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(107, 190, 69, 0.25);
}
.btn-green:hover { background: var(--green-dark); transform: translateY(-1px); }

.btn .arrow { transition: transform 0.2s; }
.btn:hover .arrow { transform: translateX(3px); }

/* ============================================================
   HERO STATS
   ============================================================ */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

.hero-stats-item {
  display: flex;
  flex-direction: column;
}

.hero-stats-item strong {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  font-family: var(--display);
  line-height: 1;
  margin-bottom: 0.35rem;
}

.hero-stats-item strong span { color: var(--blue); }
.hero-stats-item small {
  font-size: 0.78rem;
  color: var(--gray-500);
  font-weight: 500;
}

/* ============================================================
   HERO VISUAL – Energy Hub
   ============================================================ */
.hero-visual {
  position: relative;
  width: 100%;
  height: 480px;
}

.energy-hub {
  width: 100%;
  height: 100%;
  position: relative;
}

.orbit {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-circle {
  position: absolute;
  border: 1px dashed var(--gray-300);
  border-radius: 50%;
  opacity: 0.6;
}

.orbit-circle-1 { width: 220px; height: 220px; animation: spin 60s linear infinite; }
.orbit-circle-2 { width: 340px; height: 340px; animation: spin 90s linear infinite reverse; }
.orbit-circle-3 { width: 460px; height: 460px; animation: spin 120s linear infinite; }

@keyframes spin { to { transform: rotate(360deg); } }

.hub-center {
  position: relative;
  z-index: 5;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.5rem 1.25rem;
  box-shadow: var(--shadow-lg);
  text-align: center;
  width: 180px;
}

.hub-center-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 0.75rem;
  background: linear-gradient(135deg, var(--blue) 0%, var(--green) 100%);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hub-center h4 {
  font-size: 0.92rem;
  margin-bottom: 0.2rem;
  font-weight: 700;
}

.hub-center small {
  font-size: 0.7rem;
  color: var(--gray-500);
  font-weight: 500;
  font-family: var(--mono);
}

.hub-node {
  position: absolute;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray-700);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: var(--shadow);
  white-space: nowrap;
  z-index: 4;
}

.hub-node.green { background: var(--green-bg); border-color: var(--green-light); color: var(--green-dark); }
.hub-node.blue { background: var(--blue-bg); border-color: var(--blue-light); color: var(--blue-dark); }

.hub-node-icon { width: 18px; height: 18px; }

.node-1 { top: 5%; left: 50%; transform: translateX(-50%); animation: float 4s ease-in-out infinite; }
.node-2 { top: 20%; right: 5%; animation: float 4s ease-in-out infinite 0.4s; }
.node-3 { top: 44%; right: 0; animation: float 4s ease-in-out infinite 0.8s; }
.node-4 { bottom: 20%; right: 5%; animation: float 4s ease-in-out infinite 1.2s; }
.node-5 { bottom: 5%; left: 50%; transform: translateX(-50%); animation: float 4s ease-in-out infinite 1.6s; }
.node-6 { bottom: 20%; left: 5%; animation: float 4s ease-in-out infinite 2s; }
.node-7 { top: 44%; left: 0; animation: float 4s ease-in-out infinite 2.4s; }
.node-8 { top: 20%; left: 5%; animation: float 4s ease-in-out infinite 2.8s; }

@keyframes float {
  0%, 100% { transform: translate(var(--tx, 0), 0); }
  50% { transform: translate(var(--tx, 0), -8px); }
}

.node-1, .node-5 { --tx: -50%; }

/* ============================================================
   KI-PILOT BAND
   ============================================================ */
.ki-band {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--blue-dark) 100%);
  color: var(--white);
  padding: 3.5rem 0;
  position: relative;
  overflow: hidden;
}

.ki-band::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(107, 190, 69, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.ki-band-grid {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 3rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.ki-stat {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  font-family: var(--display);
}

.ki-stat-number {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green) 0%, var(--blue-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.04em;
  line-height: 1;
}

.ki-stat-unit { font-size: 2rem; font-weight: 700; color: var(--white); }

.ki-band-text h2 {
  color: var(--white);
  font-size: 1.65rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
}

.ki-band-text p { color: rgba(255, 255, 255, 0.75); font-size: 1rem; max-width: 460px; }

.ki-band a {
  color: var(--white);
  text-decoration: none;
  font-weight: 600;
  padding: 0.85rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: all 0.2s;
  font-size: 0.95rem;
  white-space: nowrap;
  min-height: 44px;
}

.ki-band a:hover { background: var(--white); color: var(--gray-900); border-color: var(--white); }

/* ============================================================
   SECTIONS – General
   ============================================================ */
section { padding: 6rem 0; position: relative; scroll-margin-top: 80px; }

.section-header { margin-bottom: 4rem; max-width: 720px; }

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: var(--blue-bg);
  color: var(--blue-dark);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.section-eyebrow.green { background: var(--green-bg); color: var(--green-dark); }

.section-header h2 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

.section-header h2 .highlight {
  background: linear-gradient(90deg, var(--blue) 0%, var(--green) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-header p {
  font-size: 1.15rem;
  color: var(--gray-600);
  line-height: 1.6;
}

/* ============================================================
   POSITIONING SECTION
   ============================================================ */
.positioning { background: var(--gray-50); }

.position-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.position-quote {
  font-size: 1.6rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--gray-900);
  margin-bottom: 1.75rem;
  letter-spacing: -0.02em;
}

.position-quote span {
  background: linear-gradient(120deg, var(--green-bg) 0%, var(--green-bg) 100%);
  background-repeat: no-repeat;
  background-size: 100% 35%;
  background-position: 0 88%;
  padding: 0 0.1rem;
}

.position-text p {
  font-size: 1.05rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.pillar {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  transition: all 0.3s;
}

.pillar:hover {
  border-color: var(--blue-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}

.pillar-icon {
  width: 44px;
  height: 44px;
  background: linear-gradient(135deg, var(--blue-bg) 0%, var(--blue-bg-2) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.pillar-icon.green { background: linear-gradient(135deg, var(--green-bg) 0%, #DCEFCB 100%); }

.pillar h4 { font-size: 1rem; margin-bottom: 0.5rem; font-weight: 700; }
.pillar p { font-size: 0.88rem; color: var(--gray-600); line-height: 1.55; }

/* ============================================================
   MULTI-USE SECTION
   ============================================================ */
.multiuse-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.multiuse-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
}

.multiuse-card:hover {
  border-color: var(--blue-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.multiuse-card::after {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 3px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--green) 100%);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}
.multiuse-card:hover::after { transform: scaleX(1); }

.multiuse-letter {
  font-family: var(--display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.1em;
  margin-bottom: 1.25rem;
  display: block;
}

.multiuse-card h3 { font-size: 1.25rem; margin-bottom: 0.75rem; font-weight: 700; }
.multiuse-card p { font-size: 0.92rem; color: var(--gray-600); line-height: 1.55; }

.multiuse-savings {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1.25rem;
  padding: 0.35rem 0.75rem;
  background: var(--green-bg);
  color: var(--green-dark);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
}

/* ============================================================
   PRODUCTS SECTION
   ============================================================ */
.products { background: var(--gray-50); }

.product-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.product-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--gray-200);
}

.product-visual {
  height: 240px;
  background: linear-gradient(135deg, var(--blue-bg) 0%, var(--blue-bg-2) 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-visual.green {
  background: linear-gradient(135deg, var(--green-bg) 0%, #DCEFCB 100%);
}

.product-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255,255,255,0.4) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,0.4) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.5;
}

.product-visual img {
  position: relative;
  z-index: 1;
  max-height: 210px;
  max-width: 88%;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 10px 28px rgba(0, 0, 0, 0.14));
  transition: transform 0.4s ease;
}

.product-card:hover .product-visual img {
  transform: scale(1.04) translateY(-3px);
}

.product-card-body { padding: 2rem; }

.product-tag {
  display: inline-block;
  padding: 0.3rem 0.7rem;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--gray-700);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.product-card h3 {
  font-size: 1.65rem;
  margin-bottom: 0.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.product-subtitle {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--blue);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.product-card p {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.75rem;
}

.product-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.product-specs > div {
  background: var(--white);
  padding: 0.85rem 1rem;
}

.product-specs dt {
  font-size: 0.7rem;
  color: var(--gray-500);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 600;
  margin-bottom: 0.2rem;
}

.product-specs dd {
  font-size: 0.92rem;
  color: var(--gray-900);
  font-weight: 600;
  font-family: var(--mono);
}

.product-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--blue);
  font-weight: 600;
  font-size: 0.92rem;
  text-decoration: none;
  padding: 0.65rem 1.1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--blue-bg-2);
  transition: all 0.2s;
  min-height: 44px;
}
.product-link:hover { background: var(--blue-bg); }

/* ============================================================
   ROI CALCULATOR
   ============================================================ */
.roi { background: linear-gradient(180deg, var(--white) 0%, var(--blue-bg) 100%); }

.roi-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--gray-200);
}

.roi-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.roi-inputs h3 {
  font-size: 1.35rem;
  margin-bottom: 0.5rem;
}

.roi-inputs > p {
  color: var(--gray-600);
  font-size: 0.92rem;
  margin-bottom: 2rem;
}

.roi-input-group { margin-bottom: 1.5rem; }

.roi-input-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.roi-input-group .label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.roi-input-group .label-value {
  font-family: var(--mono);
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--blue);
}

.roi-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--gray-200);
  border-radius: 100px;
  outline: none;
  cursor: pointer;
}

.roi-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--blue);
  cursor: pointer;
  box-shadow: var(--shadow);
}

.roi-slider::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--white);
  border: 3px solid var(--blue);
  cursor: pointer;
  box-shadow: var(--shadow);
}

.roi-radio-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

.roi-radio { position: relative; }
.roi-radio input { position: absolute; opacity: 0; }

.roi-radio label {
  display: block;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  font-weight: 600;
  font-size: 0.88rem;
  margin: 0;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.roi-radio input:checked + label {
  background: var(--blue-bg);
  border-color: var(--blue);
  color: var(--blue-dark);
}

.roi-select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--display);
  background: var(--white);
  cursor: pointer;
  color: var(--gray-900);
  min-height: 44px;
}

.roi-branche-hint {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--gray-500);
}
.roi-branche-hint--up   { color: var(--green-dark); }
.roi-branche-hint--down { color: #b45309; }

.roi-results {
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--blue-dark) 100%);
  color: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}

.roi-results::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -30%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(107, 190, 69, 0.15) 0%, transparent 60%);
  pointer-events: none;
}

.roi-results-inner { position: relative; z-index: 2; }

.roi-results-eyebrow {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background: rgba(107, 190, 69, 0.15);
  color: var(--green-light);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.roi-results h3 {
  color: var(--white);
  font-size: 1.4rem;
  margin-bottom: 2rem;
  font-weight: 700;
}

.roi-result-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.roi-result-item:last-child { border-bottom: none; }

.roi-result-label {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 0.3rem;
  font-weight: 500;
}

.roi-result-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  font-family: var(--display);
  line-height: 1;
  color: var(--white);
}

.roi-result-value.green { color: var(--green-light); }
.roi-result-value.blue { color: var(--blue-bright); }

@keyframes result-pulse {
  0%   { transform: scale(1); }
  45%  { transform: scale(1.08); }
  100% { transform: scale(1); }
}
.roi-result-value.pulsing { animation: result-pulse 0.38s ease-out; }

.roi-result-sub {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 0.4rem;
  font-family: var(--mono);
}

.roi-results-cta {
  display: block;
  width: 100%;
  margin-top: 1.5rem;
  text-align: center;
  background: var(--green);
  color: var(--white);
  padding: 1rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-weight: 700;
  transition: all 0.2s;
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.roi-results-cta:hover { background: var(--green-dark); }

.roi-disclaimer {
  margin-top: 1.5rem;
  font-size: 0.78rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.5;
}

/* ============================================================
   CASE STUDIES – Main Page Cards
   ============================================================ */
.cases { background: var(--gray-50); }

.case-featured {
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  margin-bottom: 2.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--gray-200);
  cursor: pointer;
  transition: box-shadow 0.3s, transform 0.3s;
  text-decoration: none;
  color: inherit;
}

.case-featured:hover {
  box-shadow: 0 30px 60px -15px rgba(15, 27, 45, 0.18);
  transform: translateY(-4px);
}

.case-featured-visual {
  background: linear-gradient(135deg, var(--green-bg) 0%, var(--blue-bg) 100%);
  padding: 3rem;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 320px;
}

.case-featured-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(0,0,0,0.2) 0%, rgba(0,0,0,0.6) 100%);
}

.case-featured-stat {
  position: relative;
  z-index: 2;
  text-align: center;
  background: rgba(0, 0, 0, 0.38);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,0.18);
  border-radius: var(--radius-lg);
  padding: 1.5rem 2.25rem;
  display: inline-block;
}

.case-stat-num {
  font-size: 5rem;
  font-weight: 800;
  color: var(--white);
  text-shadow: 0 2px 16px rgba(0,0,0,0.5);
  line-height: 1;
  letter-spacing: -0.04em;
  display: block;
  margin-bottom: 0.5rem;
}

.case-stat-label {
  font-size: 1rem;
  font-weight: 600;
  color: rgba(255,255,255,0.88);
  max-width: 250px;
  margin: 0 auto;
}

.case-featured-body { padding: 3rem; }

.case-tag {
  display: inline-block;
  padding: 0.3rem 0.75rem;
  background: var(--green-bg);
  color: var(--green-dark);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.case-featured h3 { font-size: 1.6rem; margin-bottom: 1rem; line-height: 1.25; }

.case-featured-body > p {
  font-size: 1rem;
  margin-bottom: 1.5rem;
  line-height: 1.65;
}

.case-quote {
  font-style: italic;
  font-size: 1rem;
  color: var(--gray-700);
  padding-left: 1.25rem;
  border-left: 3px solid var(--green);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.case-bullets {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

.case-bullets li {
  font-size: 0.85rem;
  color: var(--gray-700);
  display: flex;
  align-items: start;
  gap: 0.5rem;
  font-weight: 500;
}

.case-bullets li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
  margin-top: 0.55rem;
  flex-shrink: 0;
}

.case-read-more {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--blue);
  font-weight: 600;
  font-size: 0.92rem;
  border: 1px solid var(--blue-bg-2);
  padding: 0.6rem 1.1rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}
.case-featured:hover .case-read-more {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}

.cases-other {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.case-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all 0.3s;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
  position: relative;
  overflow: hidden;
}

.case-card-img {
  display: block;
  width: calc(100% + 4rem);
  margin: -2rem -2rem 1.75rem;
  height: 175px;
  object-fit: cover;
  border-radius: var(--radius) var(--radius) 0 0;
  transition: transform 0.4s ease;
}

/* Placeholder für Cases ohne Foto */
.case-card-placeholder {
  width: calc(100% + 4rem);
  margin: -2rem -2rem 1.75rem;
  height: 175px;
  border-radius: var(--radius) var(--radius) 0 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
}
.case-card-placeholder--green {
  background: linear-gradient(135deg, var(--green) 0%, var(--green-dark) 100%);
}

.case-card:hover .case-card-img {
  transform: scale(1.03);
}

.case-card:hover {
  border-color: var(--blue-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.case-card::after {
  content: '→';
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 1.1rem;
  color: var(--gray-300);
  transition: color 0.2s, transform 0.2s;
}

.case-card:hover::after {
  color: var(--blue);
  transform: translateX(3px);
}

.case-card-stat {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue) 0%, var(--green-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 0.3rem;
  display: block;
}

.case-card-statlabel {
  font-size: 0.78rem;
  color: var(--gray-500);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.case-card h4 { font-size: 1.05rem; margin-bottom: 0.5rem; font-weight: 700; }
.case-card p { font-size: 0.88rem; line-height: 1.55; color: var(--gray-600); margin-bottom: 0; }

.case-card-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-top: 1.25rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: gap 0.2s;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
}

.case-card:hover .case-card-cta {
  gap: 0.55rem;
  border-color: var(--blue);
}

/* ============================================================
   PROCESS SECTION
   ============================================================ */
.process-steps {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-top: 3rem;
  position: relative;
}

.process-step {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  position: relative;
  transition: all 0.3s;
}

.process-step:hover {
  border-color: var(--blue-light);
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.process-step-num {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--gray-400);
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  display: block;
}

.process-step-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--blue-bg) 0%, var(--green-bg) 100%);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.process-step h4 { font-size: 1rem; margin-bottom: 0.5rem; font-weight: 700; }
.process-step p { font-size: 0.85rem; color: var(--gray-600); line-height: 1.5; }

/* ============================================================
   KI-PILOT DEEP DIVE
   ============================================================ */
.ki-deep {
  background: var(--gray-900);
  color: var(--white);
  overflow: hidden;
  position: relative;
}

.ki-deep::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0, 164, 239, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(107, 190, 69, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.ki-deep .container { position: relative; z-index: 2; }
.ki-deep h2 { color: var(--white); }
.ki-deep p { color: rgba(255, 255, 255, 0.7); }

.ki-deep .section-eyebrow {
  background: rgba(0, 164, 239, 0.15);
  color: var(--blue-bright);
}

.ki-deep-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 3rem;
}

.ki-features {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ki-feature {
  display: flex;
  gap: 1rem;
  align-items: start;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  transition: all 0.2s;
}

.ki-feature:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(0, 164, 239, 0.3);
}

.ki-feature-check {
  width: 28px;
  height: 28px;
  background: var(--green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.ki-feature h4 { color: var(--white); font-size: 1rem; margin-bottom: 0.3rem; font-weight: 600; }
.ki-feature p { color: rgba(255, 255, 255, 0.65); font-size: 0.88rem; line-height: 1.5; }

.ki-deep-visual {
  background: linear-gradient(135deg, rgba(0, 120, 212, 0.1) 0%, rgba(107, 190, 69, 0.05) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  position: relative;
  min-height: 460px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.ki-chart-title {
  text-align: center;
  margin-bottom: 2rem;
}

.ki-chart-title h4 { color: var(--white); font-size: 1.1rem; margin-bottom: 0.4rem; }
.ki-chart-title p { color: rgba(255, 255, 255, 0.6); font-size: 0.85rem; }

.ki-chart {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.5rem;
  height: 200px;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  position: relative;
}

.ki-bar {
  flex: 1;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
  border-radius: 4px 4px 0 0;
  position: relative;
  transition: all 0.5s;
}

.ki-bar.optimized {
  background: linear-gradient(180deg, var(--green) 0%, var(--blue-bright) 100%);
}

.ki-bar-label {
  position: absolute;
  bottom: -1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--mono);
  font-size: 0.65rem;
  color: rgba(255, 255, 255, 0.4);
}

.ki-chart-legend {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 2rem;
  font-size: 0.8rem;
}

.ki-chart-legend > div { display: flex; align-items: center; gap: 0.5rem; color: rgba(255, 255, 255, 0.7); }

.legend-dot { width: 10px; height: 10px; border-radius: 50%; }
.legend-dot.gray { background: rgba(255, 255, 255, 0.2); }
.legend-dot.green-blue { background: linear-gradient(135deg, var(--green), var(--blue-bright)); }

/* ============================================================
   MARKET SECTION
   ============================================================ */
.market {
  background: linear-gradient(135deg, var(--blue-bg) 0%, var(--green-bg) 100%);
  padding: 5rem 0;
}

.market-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: center;
}

.market-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.market-stat {
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  border: 1px solid var(--gray-200);
}

.market-stat-num {
  font-size: 2.25rem;
  font-weight: 800;
  color: var(--blue-dark);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.market-stat-num.green { color: var(--green-dark); }

.market-stat-label {
  font-size: 0.82rem;
  color: var(--gray-600);
  font-weight: 500;
  line-height: 1.4;
}

.market-text h2 {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  margin-bottom: 1.25rem;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.market-text p {
  font-size: 1.05rem;
  line-height: 1.65;
  margin-bottom: 1.5rem;
}

.market-tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1.5rem; }

.market-tag {
  padding: 0.45rem 0.85rem;
  background: var(--white);
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-700);
  border: 1px solid var(--gray-200);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact { background: var(--gray-50); }

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 4rem;
  align-items: start;
}

.contact-intro h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 1.25rem;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

.contact-intro > p {
  font-size: 1.1rem;
  line-height: 1.65;
  margin-bottom: 2rem;
}

.contact-features { list-style: none; margin-bottom: 2.5rem; }

.contact-features li {
  display: flex;
  align-items: start;
  gap: 0.85rem;
  padding: 0.75rem 0;
  font-size: 0.95rem;
  color: var(--gray-700);
  font-weight: 500;
}

.contact-features svg { flex-shrink: 0; margin-top: 2px; }

.contact-person {
  background: var(--white);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

/* Inline Direct-CTAs in der Kontakt-Sektion (re-nutzt .modal-direct-action Styles) */
.contact-direct {
  margin-top: 1.25rem;
}
.contact-direct-title {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin: 0 0 0.85rem 0;
}
.contact-direct .modal-direct-action {
  background: var(--white);
}

.contact-person-avatar {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue) 0%, var(--green) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  font-weight: 800;
  font-size: 1.4rem;
  flex-shrink: 0;
  overflow: hidden;
}

.contact-person-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.contact-person-info h4 { font-size: 1.05rem; margin-bottom: 0.25rem; font-weight: 700; }
.contact-person-info small { font-size: 0.82rem; color: var(--gray-500); display: block; margin-bottom: 0.4rem; }
.contact-person-info a {
  color: var(--blue);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  font-family: var(--mono);
}

.contact-form {
  background: var(--white);
  padding: 2.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow-lg);
}

.contact-form-header { margin-bottom: 2rem; }
.contact-form-header h3 { font-size: 1.4rem; margin-bottom: 0.5rem; font-weight: 700; }
.contact-form-header p { font-size: 0.92rem; color: var(--gray-500); }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group { margin-bottom: 1.25rem; }

.form-group label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: var(--display);
  background: var(--white);
  color: var(--gray-900);
  transition: all 0.2s;
  min-height: 44px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.1);
}

.form-group textarea { min-height: 90px; resize: vertical; }

.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
  border-color: #e53e3e;
  background: #fff5f5;
  box-shadow: 0 0 0 3px rgba(229, 62, 62, 0.1);
}

.form-group.is-valid input,
.form-group.is-valid select,
.form-group.is-valid textarea {
  border-color: var(--green);
}

.form-error-msg {
  display: none;
  font-size: 0.77rem;
  color: #e53e3e;
  margin-top: 0.3rem;
  font-weight: 500;
}

.form-group.has-error .form-error-msg { display: block; }

.form-submit {
  width: 100%;
  margin-top: 1rem;
  padding: 1rem;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  color: var(--white);
  border: none;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  font-family: var(--display);
  transition: all 0.2s;
  min-height: 48px;
}

.form-submit:hover { transform: translateY(-1px); box-shadow: 0 8px 20px rgba(0, 120, 212, 0.25); }

.form-disclaimer {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--gray-500);
  text-align: center;
  line-height: 1.5;
}

/* ============================================================
   DATASHEETS SECTION
   ============================================================ */
.datasheets { padding: 5rem 0; }

.datasheet-card {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--blue-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 3rem;
  color: var(--white);
  position: relative;
  overflow: hidden;
}

.datasheet-card::before {
  content: '';
  position: absolute;
  bottom: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(107, 190, 69, 0.18) 0%, transparent 60%);
  pointer-events: none;
}

.datasheet-content { position: relative; z-index: 2; }
.datasheet-content h3 {
  color: var(--white);
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  font-weight: 800;
}
.datasheet-content p {
  color: rgba(255, 255, 255, 0.75);
  font-size: 1rem;
  max-width: 480px;
}

.datasheet-action { position: relative; z-index: 2; }

/* ============================================================
   FOOTER
   ============================================================ */
footer {
  background: var(--gray-900);
  color: var(--white);
  padding: 5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.footer-col h5 {
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.65rem; }
.footer-col a {
  color: rgba(255, 255, 255, 0.65);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--blue-bright); }
.footer-col li.plain { color: rgba(255, 255, 255, 0.65); font-size: 0.92rem; line-height: 1.5; }

.footer-brand .logo { color: var(--white); margin-bottom: 1.25rem; display: inline-flex; }
.footer-brand .logo img { filter: brightness(0) invert(1); }
.footer-brand .logo-grid span { background: var(--white); }
.footer-brand .logo-grid span:nth-child(2) { background: var(--blue-bright); }
.footer-brand .logo-grid span:nth-child(3) { background: var(--green); }
.footer-brand .logo-text small { color: rgba(255, 255, 255, 0.5); }

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.92rem;
  max-width: 320px;
  line-height: 1.55;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  margin-left: 1.5rem;
  transition: color 0.2s;
}
.footer-bottom a:hover { color: var(--white); }

/* ============================================================
   MODALS
   ============================================================ */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 27, 45, 0.6);
  backdrop-filter: blur(10px);
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.modal-overlay.active { display: flex; }

.modal {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  max-width: 480px;
  width: 100%;
  text-align: center;
  position: relative;
  box-shadow: var(--shadow-lg);
}

.modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: transparent;
  border: none;
  color: var(--gray-500);
  font-size: 1.75rem;
  cursor: pointer;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-close:hover { background: var(--gray-100); color: var(--gray-900); }

.modal-icon {
  width: 64px;
  height: 64px;
  background: var(--green-bg);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal h3 { font-size: 1.65rem; margin-bottom: 0.75rem; }
.modal p { color: var(--gray-600); margin-bottom: 0.75rem; }
.modal p.modal-note { font-size: 0.85rem; color: var(--gray-500); font-family: var(--mono); }

/* Success-Modal: Direct-CTAs (Termin / Telefon / LinkedIn) */
.modal-direct {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--gray-200);
  text-align: left;
}
.modal-direct-title {
  font-size: 0.72rem !important;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500) !important;
  margin: 0 0 1rem 0 !important;
  text-align: center;
}
.modal-direct-action {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.85rem 1rem;
  margin-bottom: 0.55rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 12px;
  background: var(--white);
  color: var(--gray-900);
  text-decoration: none;
  transition: all 0.2s;
}
.modal-direct-action:last-child { margin-bottom: 0; }
.modal-direct-action:hover {
  border-color: var(--blue);
  background: rgba(0, 120, 212, 0.04);
  transform: translateX(2px);
}
.modal-direct-icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.modal-direct-icon--blue     { background: rgba(0, 120, 212, 0.10); }
.modal-direct-icon--green    { background: rgba(107, 190, 69, 0.12); }
.modal-direct-icon--linkedin { background: #0A66C2; }
.modal-direct-text {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}
.modal-direct-text strong {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1.3;
  margin-bottom: 0.15rem;
}
.modal-direct-text small {
  font-size: 0.75rem;
  color: var(--gray-500);
  line-height: 1.3;
}
.modal-direct-arrow {
  flex-shrink: 0;
  color: var(--gray-400);
  transition: transform 0.2s, color 0.2s;
}
.modal-direct-action:hover .modal-direct-arrow {
  color: var(--blue);
  transform: translateX(3px);
}
@media (max-width: 540px) {
  .modal-direct-action { padding: 0.8rem 0.9rem; gap: 0.75rem; }
  .modal-direct-icon { width: 36px; height: 36px; }
  .modal-direct-text strong { font-size: 0.88rem; }
  .modal-direct-text small { font-size: 0.72rem; }
}

/* Hero – Social Proof Strip */
/* Hero – Mobile-only Produktbild */
.hero-mobile-img { display: none; }

/* Form – "(optional)" Label-Suffix */
.label-optional {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--gray-500);
  letter-spacing: 0.01em;
  text-transform: none;
}

/* Honeypot – für Bot-Schutz, off-screen aber technisch fokussierbar */
.hp-field {
  position: absolute !important;
  left: -10000px !important;
  top: auto !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
}


/* Form Lead-Error – sichtbare Fehlermeldung wenn Brevo-Call fehlschlägt */
.form-lead-error {
  display: block;
  padding: 1rem 1.1rem;
  margin-bottom: 1.25rem;
  background: #fef2f2;
  border: 1.5px solid #fca5a5;
  border-left: 4px solid #dc2626;
  border-radius: 8px;
  color: #7f1d1d;
  font-size: 0.88rem;
  line-height: 1.55;
}
.form-lead-error strong {
  display: block;
  font-size: 0.92rem;
  color: #991b1b;
  margin-bottom: 0.3rem;
}
.form-lead-error a {
  color: #991b1b;
  font-weight: 600;
  text-decoration: underline;
}

/* ============================================================
   SCROLL REVEAL
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Barrierefreiheit: Bewegung reduzieren – Animationen aus, Inhalt sofort sichtbar */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}

/* Skip-Link – erstes fokussierbares Element, für Tastatur & Screenreader */
.skip-link {
  position: absolute;
  left: 1rem;
  top: -3.5rem;
  z-index: 2000;
  background: var(--blue);
  color: #fff;
  padding: 0.6rem 1.1rem;
  border-radius: 0 0 8px 8px;
  font-weight: 700;
  text-decoration: none;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 0;
  outline: 2px solid #fff;
  outline-offset: 2px;
}

/* ============================================================
   CASE STUDY PAGES
   ============================================================ */
.cs-hero {
  padding: 9rem 0 5rem;
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--blue-dark) 100%);
  position: relative;
  overflow: hidden;
}

.cs-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 15% 50%, rgba(107, 190, 69, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 85% 20%, rgba(0, 164, 239, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.cs-hero .container { position: relative; z-index: 2; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.85rem;
}

.breadcrumb a {
  color: rgba(255, 255, 255, 0.6);
  text-decoration: none;
  transition: color 0.2s;
}
.breadcrumb a:hover { color: var(--white); }
.breadcrumb span { color: rgba(255, 255, 255, 0.4); }
.breadcrumb strong { color: rgba(255, 255, 255, 0.9); font-weight: 500; }

.cs-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.cs-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background: rgba(107, 190, 69, 0.15);
  color: var(--green-light);
  border-radius: 100px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.cs-hero h1 {
  font-size: clamp(1.9rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--white);
  margin-bottom: 1.5rem;
}

.cs-hero-sub {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.6;
  margin-bottom: 2rem;
}

.cs-hero-stat-box {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  text-align: center;
}

.cs-hero-stat-number {
  font-size: 5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--green) 0%, var(--blue-bright) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  letter-spacing: -0.04em;
  display: block;
  margin-bottom: 0.75rem;
}

.cs-hero-stat-label {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  line-height: 1.4;
}

/* Case Study Photo Gallery */
.cs-photos {
  padding: 0;
  background: var(--gray-900);
}

/* Justified-Reihe: alle Bilder gleiche Höhe, Breite nach Original-
   Seitenverhältnis – kein Zuschnitt (object-fit: cover) mehr. */
.cs-photos-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 3px;
}

.cs-photos-grid img {
  height: 320px;
  width: auto;
  max-width: 100%;
  object-fit: contain;
  display: block;
  transition: transform 0.5s ease;
}

.cs-photos-grid img:hover {
  transform: scale(1.02);
}

/* Hauptbild etwas größer hervorheben, ebenfalls ohne Zuschnitt */
.cs-photos-grid .cs-photo-main {
  height: 380px;
}

@media (max-width: 768px) {
  .cs-photos-grid img,
  .cs-photos-grid .cs-photo-main { height: 240px; }
}

@media (max-width: 540px) {
  .cs-photos-grid img,
  .cs-photos-grid .cs-photo-main {
    height: auto;
    width: 100%;
  }
}

/* Project Facts Grid */
.cs-facts {
  padding: 5rem 0;
  background: var(--gray-50);
}

.cs-facts h2 {
  font-size: 1.75rem;
  margin-bottom: 2rem;
  letter-spacing: -0.02em;
}

.cs-facts-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
}

.cs-fact {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.cs-fact:hover { border-color: var(--blue-light); }

.cs-fact-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-400);
  margin-bottom: 0.5rem;
  font-family: var(--mono);
}

.cs-fact-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.02em;
  line-height: 1.15;
}

.cs-fact-value.blue { color: var(--blue); }
.cs-fact-value.green { color: var(--green-dark); }

/* Case Study Content */
.cs-content { padding: 5rem 0; }

.cs-content-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 4rem;
  align-items: start;
}

.cs-main h2 {
  font-size: 1.75rem;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.cs-main h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  margin-top: 2rem;
  letter-spacing: -0.015em;
  color: var(--gray-800);
}

.cs-main h3:first-child { margin-top: 0; }

.cs-main p {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
  color: var(--gray-700);
}

.cs-main ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.cs-main ul li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
  color: var(--gray-700);
  line-height: 1.5;
}

.cs-main ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.9rem;
  width: 6px;
  height: 6px;
  background: var(--green);
  border-radius: 50%;
}

.cs-sidebar {
  position: sticky;
  top: 6rem;
}

.cs-quote-box {
  background: linear-gradient(135deg, var(--green-bg) 0%, var(--blue-bg) 100%);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 1.5rem;
}

.cs-quote-box blockquote {
  font-style: italic;
  font-size: 1rem;
  color: var(--gray-700);
  line-height: 1.65;
  padding-left: 1rem;
  border-left: 3px solid var(--green);
}

.cs-results-box {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.cs-results-box h4 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
  font-weight: 700;
  color: var(--gray-900);
}

.cs-result-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--gray-100);
  gap: 1rem;
}
.cs-result-item:last-child { border-bottom: none; }

.cs-result-label {
  font-size: 0.85rem;
  color: var(--gray-600);
  font-weight: 500;
  flex: 1;
}

.cs-result-value {
  font-size: 1rem;
  font-weight: 700;
  color: var(--green-dark);
  font-family: var(--mono);
  white-space: nowrap;
}

/* YouTube Video Section */
.cs-video {
  padding: 5rem 0;
  background: var(--gray-900);
  position: relative;
  overflow: hidden;
}

.cs-video::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 50% 50%, rgba(0, 164, 239, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.cs-video .container { position: relative; z-index: 2; }

.cs-video h2 {
  color: var(--white);
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.cs-video p {
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 2.5rem;
  font-size: 1rem;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.video-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.03);
  border: 1px dashed rgba(255, 255, 255, 0.15);
}

.video-placeholder-icon {
  width: 72px;
  height: 72px;
  background: rgba(255, 255, 255, 0.07);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid rgba(255, 255, 255, 0.15);
}

.video-soon-title {
  font-size: 1rem;
  font-weight: 700;
  color: rgba(255, 255, 255, 0.85);
  margin: 0;
  letter-spacing: -0.01em;
}

.video-soon-sub {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.4);
  margin: -0.5rem 0 0;
  text-align: center;
  max-width: 320px;
}

/* External YouTube link placeholder */
.video-placeholder--external {
  background: rgba(255, 255, 255, 0.04);
}

/* YouTube Facade (DSGVO-konform: kein Laden bis Klick) */
.video-facade {
  position: absolute;
  inset: 0;
  cursor: pointer;
  overflow: hidden;
  border-radius: var(--radius-lg);
  background: #000;
  outline: none;
}

.video-facade:focus-visible {
  box-shadow: 0 0 0 3px var(--blue);
}

.video-facade img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.82;
  transition: opacity 0.25s, transform 0.35s;
  display: block;
}

.video-facade:hover img,
.video-facade:focus img {
  opacity: 0.65;
  transform: scale(1.04);
}

.video-facade-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.video-facade-play svg {
  width: 72px;
  height: 50px;
  filter: drop-shadow(0 4px 20px rgba(0,0,0,0.55));
  transition: transform 0.2s;
}

.video-facade:hover .video-facade-play svg {
  transform: scale(1.14);
}

.video-facade-notice {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.55rem 1rem;
  background: rgba(0, 0, 0, 0.7);
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  letter-spacing: 0.01em;
}

.video-yt-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.4rem;
  background: #FF0000;
  color: white;
  font-size: 0.88rem;
  font-weight: 700;
  border-radius: 6px;
  text-decoration: none;
  transition: opacity 0.2s, transform 0.2s;
  margin-top: 0.25rem;
}

.video-yt-btn:hover {
  opacity: 0.88;
  transform: translateY(-1px);
}

.video-yt-note {
  font-size: 0.76rem;
  color: rgba(255, 255, 255, 0.35);
  margin: 0;
  text-align: center;
}

/* Case Study CTA */
.cs-cta {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--blue-bg) 0%, var(--green-bg) 100%);
}

.cs-cta-inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.cs-cta h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
  letter-spacing: -0.025em;
}

.cs-cta p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.cs-cta-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================================
   LIGHTBOX
   ============================================================ */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.93);
  z-index: 9000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.lightbox-overlay.active {
  opacity: 1;
  pointer-events: all;
}

.lightbox-overlay img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: 6px;
  box-shadow: 0 32px 96px rgba(0, 0, 0, 0.8);
  transform: scale(0.96);
  transition: transform 0.2s ease;
}

.lightbox-overlay.active img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  line-height: 1;
  transition: background 0.15s;
}

.lightbox-close:hover { background: rgba(255, 255, 255, 0.22); }

.lightbox-hint {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.78rem;
  white-space: nowrap;
}

/* Make gallery images feel clickable */
.cs-photos-grid img {
  cursor: zoom-in;
}

.cs-photos-grid {
  position: relative;
}

.cs-photos-grid img:hover::after {
  content: '';
}

/* ============================================================
   FAQ
   ============================================================ */
.faq,
.faq-section {
  padding: 6rem 0;
  background: var(--gray-50);
}

.faq-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3.5rem;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq-item {
  border-bottom: 1px solid var(--gray-200);
}

.faq-item:first-child {
  border-top: 1px solid var(--gray-200);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.4rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  cursor: pointer;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
  font-family: var(--sans);
  transition: color 0.15s;
}

.faq-question:hover { color: var(--blue); }

.faq-chevron {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.25s, background 0.15s;
}

.faq-item.open .faq-chevron {
  transform: rotate(180deg);
  background: var(--blue-bg);
}

.faq-item.open .faq-question { color: var(--blue); }

.faq-answer {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.28s ease;
}

.faq-item.open .faq-answer {
  grid-template-rows: 1fr;
}

.faq-answer-inner {
  overflow: hidden;
}

.faq-answer-inner p,
.faq-answer-inner ul {
  padding-bottom: 1.4rem;
  color: var(--gray-600);
  font-size: 0.95rem;
  line-height: 1.7;
  margin: 0;
}

.faq-answer-inner ul {
  padding-left: 1.4rem;
}

.faq-answer-inner ul li { margin-bottom: 0.4rem; }

/* ============================================================
   STICKY MOBILE CTA
   ============================================================ */
.sticky-mobile-cta {
  display: none;
}

/* ============================================================
   RESPONSIVE – Tablet (≤ 968px)
   ============================================================ */
@media (max-width: 968px) {
  .hero-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { height: 380px; }
  .ki-deep-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .position-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .multiuse-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: 1fr; }
  .roi-grid { grid-template-columns: 1fr; gap: 2rem; }
  .market-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .contact-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .case-featured { grid-template-columns: 1fr; }
  .cs-hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .cs-facts-grid { grid-template-columns: repeat(2, 1fr); }
  .cs-content-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .cs-sidebar { position: static; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

/* ============================================================
   RESPONSIVE – Mobile (≤ 768px)
   ============================================================ */
@media (max-width: 768px) {
  .sticky-mobile-cta {
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 800;
    background: var(--gray-900);
    padding: 0.85rem 1.25rem 1rem;
    gap: 1rem;
    align-items: center;
    box-shadow: 0 -4px 24px rgba(0,0,0,0.22);
    border-top: 1px solid rgba(255,255,255,0.07);
    transform: translateY(110%);
    transition: transform 0.38s cubic-bezier(0.34, 1.56, 0.64, 1);
  }
  .sticky-mobile-cta.visible { transform: translateY(0); }
  .sticky-mobile-cta-text {
    flex: 1;
    font-size: 0.78rem;
    color: rgba(255,255,255,0.5);
    line-height: 1.4;
  }
  .sticky-mobile-cta-text strong {
    display: block;
    color: rgba(255,255,255,0.85);
    font-size: 0.85rem;
    margin-bottom: 0.1rem;
  }
  .sticky-mobile-cta a {
    background: var(--green);
    color: white;
    padding: 0.72rem 1.2rem;
    border-radius: 8px;
    font-size: 0.88rem;
    font-weight: 700;
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
    transition: background 0.2s;
  }
  .sticky-mobile-cta a:active { background: var(--green-dark); }

  .container { padding: 0 1.25rem; }
  section { padding: 4rem 0; }
  .ki-band { padding: 2.5rem 0; }
  .market { padding: 4rem 0; }
  .datasheets { padding: 4rem 0; }

  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-cta { display: none; }

  .hero { padding: 7rem 0 4rem; }
  .hero h1 { font-size: 2.2rem; }
  .hero-sub { font-size: 1rem; }
  .hero-cta-group { flex-direction: column; }
  .hero-cta-group .btn { width: 100%; justify-content: center; }
  .hero-stats { grid-template-columns: 1fr 1fr; gap: 1.25rem; }
  .hero-stats-item strong { font-size: 1.4rem; }

  .ki-band-grid { grid-template-columns: 1fr; gap: 1.25rem; text-align: center; }
  .ki-stat-number { font-size: 4rem; }
  .ki-band a { width: 100%; justify-content: center; }

  .process-steps { grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .cases-other { grid-template-columns: 1fr; }
  .roi-card { padding: 1.75rem 1.25rem; }
  .datasheet-card { grid-template-columns: 1fr; padding: 2rem; }
  .contact-form { padding: 1.75rem; }
  .modal { padding: 2rem; }

  .cs-facts-grid { grid-template-columns: 1fr 1fr; }
  .cs-hero { padding: 7.5rem 0 4rem; }
  .cs-hero h1 { font-size: 1.9rem; }
  .cs-hero-stat-number { font-size: 4rem; }
  .cs-cta-actions { flex-direction: column; align-items: center; }
  .cs-cta-actions .btn { width: 100%; justify-content: center; }
}

/* ============================================================
   RESPONSIVE – Small Mobile (≤ 540px)
   ============================================================ */
@media (max-width: 540px) {
  /* Hero: Orbit ausblenden, statisches Produktbild zeigen */
  .hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    height: auto;
    margin-top: 0.5rem;
    margin-bottom: 1rem;
  }
  .energy-hub { display: none; }
  .hero-mobile-img {
    display: block;
    width: 55%;
    max-width: 220px;
    height: auto;
    filter: drop-shadow(0 12px 30px rgba(0, 76, 138, 0.18));
  }
  .hero { padding: 6.5rem 0 3.5rem; }
  .hero-stats { grid-template-columns: 1fr; gap: 1rem; }
  .hero-stats-item { flex-direction: row; align-items: baseline; gap: 0.5rem; }
  .hero-stats-item strong { font-size: 1.25rem; }

  .pillars { grid-template-columns: 1fr; }
  .multiuse-grid { grid-template-columns: 1fr; }
  .process-steps { grid-template-columns: 1fr; }
  .market-stats { grid-template-columns: 1fr; }
  .case-bullets { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }

  .cs-facts-grid { grid-template-columns: 1fr 1fr; }
  .cs-hero-stat-number { font-size: 3.5rem; }
  .ki-chart { height: 140px; }
}

/* ============================================================
   RESPONSIVE – Extra Small (≤ 400px)
   ============================================================ */
@media (max-width: 400px) {
  .cs-facts-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   COOKIE BANNER
   ============================================================ */
.cookie-banner {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(calc(100% + 3rem));
  width: calc(100% - 2rem);
  max-width: 600px;
  background: var(--gray-900);
  border-radius: 16px;
  box-shadow: 0 12px 48px rgba(0,0,0,0.4), 0 2px 8px rgba(0,0,0,0.25);
  z-index: 9999;
  transition: transform 0.45s cubic-bezier(0.34, 1.56, 0.64, 1);
  overflow: hidden;
}
.cookie-banner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue) 0%, var(--blue-light) 50%, var(--green) 100%);
}
.cookie-banner.cb-visible {
  transform: translateX(-50%) translateY(0);
}
.cb-inner {
  padding: 1.5rem 1.75rem;
  display: grid;
  gap: 1.1rem;
}
.cb-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.cb-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: rgba(0, 120, 212, 0.15);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.cb-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--white);
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.cb-text {
  font-size: 0.82rem;
  color: var(--gray-400);
  line-height: 1.6;
  margin: 0;
}
.cb-link {
  color: var(--blue-light);
  text-decoration: none;
  font-weight: 500;
}
.cb-link:hover { text-decoration: underline; }
.cb-actions {
  display: flex;
  gap: 0.6rem;
}
.cb-btn {
  flex: 1;
  padding: 0.65rem 1rem;
  border-radius: 8px;
  font-size: 0.83rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  text-align: center;
  line-height: 1.25;
  font-family: var(--display);
}
.cb-btn--secondary {
  background: transparent;
  color: var(--gray-300);
  border: 1.5px solid rgba(255,255,255,0.18);
}
.cb-btn--secondary:hover {
  background: rgba(255,255,255,0.07);
  border-color: rgba(255,255,255,0.35);
  color: var(--white);
}
.cb-btn--primary {
  background: var(--green);
  color: #fff;
  border: 1.5px solid var(--green);
}
.cb-btn--primary:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
}

/* Sticky Mobile CTA verstecken wenn Cookie-Banner offen */
body.cookie-banner-open .sticky-mobile-cta { display: none !important; }

@media (max-width: 540px) {
  .cookie-banner { bottom: 0.75rem; width: calc(100% - 1.5rem); border-radius: 14px; }
  .cb-inner { padding: 1.25rem 1.25rem; }
}

/* ============================================================
   THEMENSEITEN: direktvermarktung.html, virtuelles-kraftwerk.html
   Erweiterungen für sidebar cards, pull quotes, checklisten,
   und das inline Whitepaper-Anfrageformular.
   ============================================================ */

.cs-side-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.cs-side-card h4 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0 0 0.85rem;
  color: var(--gray-900);
  letter-spacing: -0.005em;
}
.cs-side-card p {
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--gray-700);
  margin: 0;
}
.cs-side-card ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: var(--gray-700);
}
.cs-side-card ul li {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--gray-100);
}
.cs-side-card ul li:last-child { border-bottom: none; }
.cs-side-card ul li strong { color: var(--gray-900); }
.cs-side-card ul li a {
  color: var(--blue);
  font-weight: 600;
  text-decoration: none;
}
.cs-side-card ul li a:hover { color: var(--blue-dark); }

.cs-side-card--cta {
  background: linear-gradient(135deg, var(--green-bg) 0%, var(--blue-bg) 100%);
  border-color: transparent;
}
.cs-side-card--cta .btn {
  margin-top: 1rem;
  width: 100%;
  justify-content: center;
}

.cs-quote {
  background: var(--gray-50);
  border-left: 4px solid var(--green);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  border-radius: 0 var(--radius) var(--radius) 0;
}
.cs-quote p {
  font-style: italic;
  font-size: 1.05rem;
  color: var(--gray-800);
  margin: 0 0 0.75rem;
  line-height: 1.6;
}
.cs-quote cite {
  font-style: normal;
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 600;
}

.cs-checklist {
  list-style: none;
  padding: 0;
  margin: 1rem 0 1.5rem;
}
.cs-checklist li {
  padding: 0.5rem 0 0.5rem 2rem;
  position: relative;
  color: var(--gray-700);
  line-height: 1.55;
}
.cs-checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0.5rem;
  width: 1.25rem;
  height: 1.25rem;
  border-radius: 50%;
  background: var(--green);
  color: var(--white);
  font-size: 0.75rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

/* Whitepaper / Förderung Inline-Formular */
.cs-form-section {
  padding: 5rem 0;
  background: var(--gray-50);
}
.cs-form-wrapper {
  max-width: 980px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 3rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  align-items: start;
}
.cs-form-intro .section-eyebrow {
  margin-bottom: 0.75rem;
}
.cs-form-intro h2 {
  font-size: 1.65rem;
  margin: 0 0 1rem;
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.cs-form-intro p {
  color: var(--gray-700);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}
.cs-form .form-group { margin-bottom: 1rem; }
.cs-form label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--gray-700);
}
.cs-form .required { color: var(--green-dark); }
.cs-form input[type="text"],
.cs-form input[type="email"],
.cs-form textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-sm);
  font: inherit;
  font-size: 0.95rem;
  color: var(--gray-900);
  background: var(--white);
  transition: border-color 0.15s, box-shadow 0.15s;
  box-sizing: border-box;
}
.cs-form input[type="text"]:focus,
.cs-form input[type="email"]:focus,
.cs-form textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(0, 120, 212, 0.12);
}
.cs-form textarea {
  resize: vertical;
  min-height: 80px;
}
.cs-form .form-privacy {
  font-size: 0.78rem;
  color: var(--gray-500);
  line-height: 1.5;
  margin: 0.5rem 0 1.25rem;
}
.cs-form .form-privacy a {
  color: var(--blue);
  text-decoration: underline;
}
.cs-form button[type="submit"] {
  width: 100%;
  justify-content: center;
}

@media (max-width: 768px) {
  .cs-form-section { padding: 3rem 0; }
  .cs-form-wrapper {
    grid-template-columns: 1fr;
    padding: 2rem 1.5rem;
    gap: 2rem;
  }
  .cs-form-intro h2 { font-size: 1.4rem; }
}

/* ============================================================
   ETAPPE B: Hero-Erlösstrip, Multi-Use Erweiterungen,
   SEINE OS Line-Chart, 2-Pager Download.
   ============================================================ */

/* Multi-Use: Link in der savings-Box, Note-Box für negative Preise */
.multiuse-link {
  color: inherit;
  text-decoration: none;
  font-weight: 700;
}
.multiuse-link:hover { text-decoration: underline; }

.multiuse-note {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  margin-top: 2.5rem;
  padding: 1.5rem 1.75rem;
  background: linear-gradient(135deg, #FFF8EC 0%, #FEEFD5 100%);
  border: 1px solid #FCD9A0;
  border-radius: var(--radius);
  color: #7A4A0E;
}
.multiuse-note-icon {
  flex-shrink: 0;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #E89A2E;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
}
.multiuse-note strong {
  display: block;
  font-size: 1rem;
  color: #5A3608;
  margin-bottom: 0.35rem;
}
.multiuse-note p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.55;
  color: #7A4A0E;
}

/* SEINE OS Line-Chart */
.ki-chart-svg {
  width: 100%;
  margin: 1.25rem 0 0.75rem;
}
.ki-chart-svg svg {
  width: 100%;
  height: auto;
  display: block;
}
.ki-chart-svg .chart-grid line {
  stroke: rgba(255, 255, 255, 0.08);
  stroke-width: 1;
}
.ki-chart-svg .chart-axis text {
  font-family: var(--mono);
  font-size: 10px;
  fill: rgba(255, 255, 255, 0.5);
  letter-spacing: 0.04em;
}
.ki-chart-svg .chart-line {
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.ki-chart-svg .chart-line--gray { stroke: rgba(255, 255, 255, 0.45); }
.ki-chart-svg .chart-line--green {
  stroke: #6BBE45;
  filter: drop-shadow(0 0 6px rgba(107, 190, 69, 0.45));
}
.ki-chart-svg .chart-area--gray  { fill: rgba(255, 255, 255, 0.04); }
.ki-chart-svg .chart-area--green { fill: rgba(107, 190, 69, 0.10); }
.ki-chart-svg .chart-annotation line {
  stroke: rgba(107, 190, 69, 0.7);
  stroke-width: 1.5;
}
.ki-chart-svg .chart-annotation text {
  font-size: 11px;
  font-weight: 600;
  fill: #6BBE45;
  letter-spacing: 0.02em;
}

/* 2-Pager Download Card unter dem Chart */
.ki-download {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  flex-wrap: wrap;
}
.ki-download-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.ki-download-text strong {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fff;
}
.ki-download-text span {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.4;
}
.ki-download-btn {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}
.ki-download-btn:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 968px) {
  /* 6 Multi-Use-Karten in 2 Spalten = 3 Zeilen */
  .multiuse-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 540px) {
  .multiuse-grid { grid-template-columns: 1fr; }
  .multiuse-note { flex-direction: column; gap: 0.75rem; padding: 1.25rem; }
  .ki-download { flex-direction: column; align-items: stretch; text-align: left; }
  .ki-download-btn { justify-content: center; }
}

/* ============================================================
   ETAPPE C: Product Tabs, BSI Range-Selector,
   ROI PV-Hint, Market-CTA für Förderung.
   ============================================================ */

/* Tab-Switcher für Produktklassen (Indoor · Outdoor · Container) */
.product-tabs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-bottom: 2.5rem;
  max-width: 920px;
  margin-left: auto;
  margin-right: auto;
}
.product-tab {
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.1rem 1.25rem;
  cursor: pointer;
  font: inherit;
  text-align: left;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.product-tab:hover {
  border-color: var(--blue);
  transform: translateY(-2px);
}
.product-tab.is-active {
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  border-color: var(--blue-dark);
  color: var(--white);
  box-shadow: 0 6px 20px rgba(0, 120, 212, 0.25);
}
.product-tab-label {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-900);
}
.product-tab.is-active .product-tab-label { color: var(--white); }
.product-tab-range {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gray-500);
  font-weight: 500;
}
.product-tab.is-active .product-tab-range { color: rgba(255, 255, 255, 0.85); }

/* Tab Panels */
.product-panel { display: none; }
.product-panel.is-active { display: block; }

/* Grid-Varianten für unterschiedliche Anzahl Karten */
.product-grid--three { grid-template-columns: repeat(3, 1fr); }
.product-grid--two   { grid-template-columns: repeat(2, 1fr); }
.product-grid--single {
  grid-template-columns: minmax(0, 720px);
  justify-content: center;
}

/* Cards ohne Bild (BSO, BSI) – Padding direkt in der Card */
.product-card:not(:has(.product-visual)) {
  padding: 2rem;
}
.product-card:not(:has(.product-visual)) h3 {
  margin-bottom: 0.4rem;
}
.product-card-tag-row {
  margin-bottom: 1rem;
}

/* Highlight Variante (BSO PRO) */
.product-card--highlight {
  border-color: var(--green);
  position: relative;
  /* overflow:visible erlaubt, dass die Premium-Badge oben aus der Karte ragt
     (Eltern-.product-card hat overflow:hidden für Rounded-Corner-Clipping) */
  overflow: visible;
}
.product-card--highlight::before {
  content: "Premium";
  position: absolute;
  top: -0.7rem;
  right: 1.5rem;
  background: var(--green);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  z-index: 2;
}
.product-tag.green {
  background: var(--green-bg);
  color: var(--green-dark);
}

/* Alternative Link-Variante (zweiter Link in product-actions) */
.product-link--alt {
  border-color: var(--gray-200);
  color: var(--gray-700);
  background: var(--white);
}
.product-link--alt:hover { background: var(--gray-50); }

/* BSI Range-Selector innerhalb der Card */
.product-range-selector {
  background: var(--gray-50);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  padding: 1rem 1.1rem;
  margin: 1rem 0 1.5rem;
}
.range-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.6rem;
}
.range-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gray-500);
}
.range-value {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--blue-dark);
}
.range-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 0.4rem;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: var(--gray-500);
}

/* ROI PV-Hint (Wirtschaftlichkeits-Warnung) */
.roi-pv-hint {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.45;
  color: var(--gray-500);
}
.roi-pv-hint--warn {
  color: #b45309;
  padding: 0.5rem 0.75rem;
  background: #FFF8EC;
  border: 1px solid #FCD9A0;
  border-radius: var(--radius-sm);
}
.roi-pv-hint--warn::before {
  content: "⚠";
  margin-right: 0.4rem;
  font-weight: 700;
}

/* Market-CTA Button (Förderung anfordern) */
.market-cta {
  margin-top: 1.5rem;
}

/* ============================================================
   ETAPPE D: Bestseller-Flagship-Karten (92/183 + Container)
   ============================================================ */

/* Vergleichstabelle: Indoor / Outdoor / Container */
.compare-table-wrap {
  margin: 0 0 3rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.compare-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  overflow: hidden;
  min-width: 720px;
}
.compare-table thead th {
  background: var(--gray-50);
  padding: 1rem 1.25rem;
  text-align: left;
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--gray-700);
  border-bottom: 2px solid var(--gray-200);
}
.compare-table thead th:first-child {
  color: var(--gray-500);
  font-size: 0.72rem;
}
.compare-th-indoor    { color: var(--blue-dark) !important; }
.compare-th-outdoor   { color: var(--blue) !important; }
.compare-th-container { color: var(--green-dark) !important; }

.compare-table tbody th {
  text-align: left;
  padding: 0.95rem 1.25rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--gray-500);
  letter-spacing: 0.02em;
  background: var(--gray-50);
  border-right: 1px solid var(--gray-200);
  white-space: nowrap;
}
.compare-table tbody td {
  padding: 0.95rem 1.25rem;
  font-size: 0.92rem;
  color: var(--gray-900);
  border-bottom: 1px solid var(--gray-100);
}
.compare-table tbody tr:last-child td,
.compare-table tbody tr:last-child th { border-bottom: none; }
.compare-table tbody td:nth-child(2) { color: var(--blue-dark); font-weight: 500; }
.compare-table tbody td:nth-child(3) { color: var(--blue); font-weight: 500; }
.compare-table tbody td:nth-child(4) { color: var(--green-dark); font-weight: 500; }
.compare-table-cta th {
  background: linear-gradient(90deg, var(--gray-50) 0%, var(--blue-bg) 100%) !important;
}
.compare-table-cta td {
  font-weight: 600 !important;
  background: rgba(0, 120, 212, 0.04);
}

.product-flagship-grid {
  display: grid;
  grid-template-columns: 1fr;
  max-width: 880px;
  margin: 0 auto 3.5rem;
  gap: 2rem;
}
.product-flagship-grid:has(.product-flagship + .product-flagship) {
  grid-template-columns: 1fr 1fr;
  max-width: none;
}

.product-flagship {
  position: relative;
  background: var(--white);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.06);
}
.product-flagship:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 38px rgba(0, 0, 0, 0.10);
}

.product-flagship--outdoor   { border-top: 4px solid var(--blue); }
.product-flagship--container { border-top: 4px solid var(--green); }

.product-flagship-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 2;
  background: linear-gradient(135deg, #FFD700 0%, #FFA500 100%);
  color: #5A3608;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: 0 4px 12px rgba(255, 165, 0, 0.3);
}

.product-flagship-visual {
  height: 260px;
  background: linear-gradient(135deg, var(--blue-bg) 0%, var(--blue-bg-2) 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-flagship-visual.green {
  background: linear-gradient(135deg, var(--green-bg) 0%, #DCEFCB 100%);
}
.product-flagship-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.4) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.4) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.5;
}
.product-flagship-visual img {
  position: relative;
  z-index: 1;
  max-height: 230px;
  max-width: 80%;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.18));
  transition: transform 0.35s ease;
}
.product-flagship:hover .product-flagship-visual img {
  transform: scale(1.04) translateY(-4px);
}

.product-flagship-body { padding: 2.25rem 2rem 2rem; }
.product-flagship-body h3 {
  font-size: 1.85rem;
  margin: 0.6rem 0 0.4rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--gray-900);
}

/* Filled Link-Variante (für Flagship-CTAs) */
.product-link--filled {
  background: var(--blue);
  color: var(--white);
  border-color: var(--blue);
}
.product-link--filled:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  color: var(--white);
}
.product-flagship--container .product-link--filled {
  background: var(--green-dark);
  border-color: var(--green-dark);
}
.product-flagship--container .product-link--filled:hover {
  background: #3a7a20;
  border-color: #3a7a20;
}

/* "Weitere Produktklassen" Subheading */
.product-tabs-intro {
  text-align: center;
  margin-bottom: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
  padding-top: 2.5rem;
}
.product-tabs-intro h3 {
  font-size: 1.35rem;
  margin: 0 0 0.4rem;
  font-weight: 700;
  color: var(--gray-900);
}
.product-tabs-intro p {
  color: var(--gray-600);
  font-size: 0.95rem;
  margin: 0;
}

/* Querverweis-Hinweis unter Tab-Inhalten (z. B. "92/183 auch als Indoor") */
.product-tab-hint {
  text-align: center;
  font-size: 0.85rem;
  color: var(--gray-600);
  margin: 1.5rem auto 0;
  max-width: 720px;
  padding: 0.75rem 1rem;
  background: var(--gray-50, #F7F8FA);
  border-radius: var(--radius);
  border: 1px dashed var(--gray-200);
}
.product-tab-hint strong { color: var(--gray-900); }

/* SEINE 92/183 Bestseller-Karte */
.seine92-card {
  background: var(--white);
  border: 2px solid var(--green);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  margin: 0 0 2.5rem;
}
.seine92-card-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem 2.5rem;
  flex-wrap: wrap;
}
.seine92-card-content { flex: 1; min-width: 260px; }
.seine92-badge {
  display: inline-block;
  background: var(--green);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.3rem 0.75rem;
  border-radius: 100px;
  margin-bottom: 0.75rem;
}
.seine92-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0 0 0.35rem;
  line-height: 1.2;
}
.seine92-subtitle {
  color: var(--gray-600);
  font-size: 0.9rem;
  margin: 0 0 1.25rem;
}
.seine92-specs {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
}
.seine92-spec {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}
.seine92-spec-val {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--green-dark);
}
.seine92-spec-lbl {
  font-size: 0.75rem;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.seine92-card-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: flex-start;
  flex-shrink: 0;
}

/* Modell-Listen in den BSI/BSO-Karten */
.product-model-list {
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 1.25rem;
}
.product-model-list li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.28rem 0;
  border-bottom: 1px solid var(--gray-100);
  font-size: 0.8rem;
  gap: 0.5rem;
}
.product-model-list li:last-child { border-bottom: none; }
.product-model-list .model-name {
  font-weight: 700;
  color: var(--gray-900);
  white-space: nowrap;
  letter-spacing: -0.01em;
}
.product-model-list .model-config {
  color: var(--gray-500);
  text-align: right;
  white-space: nowrap;
}
.product-model-list .model-divider {
  border-bottom: none !important;
  border-top: 2px solid var(--gray-200);
  padding: 0.4rem 0 0.2rem !important;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--gray-400);
  justify-content: flex-start;
}

/* Sub-Überschriften innerhalb der Produkt-Panels */
.product-subheading {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--gray-500);
  margin: 2.25rem 0 1rem;
}
.product-subheading:first-child { margin-top: 0; }

/* Container-Karte: integriertes Visual + grüne Akzentfarbe */
.product-card--container .product-card-visual {
  height: 240px;
  margin: 0.5rem -2rem 1.5rem;
  background: linear-gradient(135deg, var(--green-bg) 0%, #DCEFCB 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.product-card--container .product-card-visual::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.4) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255, 255, 255, 0.4) 1px, transparent 1px);
  background-size: 20px 20px;
  opacity: 0.5;
}
.product-card--container .product-card-visual img {
  position: relative;
  z-index: 1;
  max-height: 210px;
  max-width: 80%;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.18));
}
.product-card--container .product-link--filled {
  background: var(--green-dark);
  border-color: var(--green-dark);
}
.product-card--container .product-link--filled:hover {
  background: #3a7a20;
  border-color: #3a7a20;
}

@media (max-width: 968px) {
  .product-flagship-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .product-flagship-visual { height: 220px; }
  .product-flagship-body { padding: 2rem 1.5rem 1.75rem; }
  .product-flagship-body h3 { font-size: 1.6rem; }
}
@media (max-width: 540px) {
  .product-flagship-visual { height: 180px; }
  .product-flagship-badge { font-size: 0.65rem; padding: 0.25rem 0.65rem; top: 0.75rem; right: 0.75rem; }
  .product-flagship-body { padding: 1.5rem 1.25rem 1.5rem; }
  .product-flagship-body h3 { font-size: 1.4rem; }
  .product-flagship .product-specs { grid-template-columns: 1fr; }
}

/* Inline-Link innerhalb der dunklen SEINE-OS-Feature-Texte */
.ki-feature-link {
  color: #6BBE45;
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
  transition: color 0.15s;
}
.ki-feature-link:hover {
  color: #8FD46A;
}

/* ============================================================
   ETAPPE E: EMS-Stufung, Foerderlandschaft, Kontaktliste
   ============================================================ */

/* EMS-Stufung-Karten (SEINE.CONTROL vs. SEINE.OS) */
.ems-tier {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: stretch;
  margin: 0 0 3rem;
}
.ems-tier-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius);
  padding: 1.5rem 1.75rem;
}
.ems-tier-card.is-active {
  background: rgba(107, 190, 69, 0.10);
  border-color: rgba(107, 190, 69, 0.4);
  box-shadow: 0 8px 24px rgba(107, 190, 69, 0.15);
}
.ems-tier-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 0.5rem;
}
.ems-tier-badge--active { color: #6BBE45; }
.ems-tier-card h4 {
  font-size: 1.3rem;
  margin: 0 0 0.6rem;
  color: #fff;
  font-weight: 700;
}
.ems-tier-card p {
  font-size: 0.9rem;
  line-height: 1.55;
  color: rgba(255, 255, 255, 0.75);
  margin: 0 0 0.85rem;
}
.ems-tier-card p strong { color: #fff; font-weight: 700; }
.ems-tier-link {
  color: #6BBE45;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}
.ems-tier-link:hover { text-decoration: underline; }
.ems-tier-link--here {
  color: rgba(255, 255, 255, 0.5);
  font-style: italic;
}
.ems-tier-divider {
  align-self: center;
  color: rgba(255, 255, 255, 0.3);
}

/* Foerderlandschaft-Sektion */
.foerderlandschaft {
  background: linear-gradient(180deg, var(--gray-50) 0%, var(--white) 100%);
}

/* Hero-Karte Industriestrompreis */
.foerder-hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2.5rem;
  align-items: center;
  background: linear-gradient(135deg, #003D99 0%, #0078D4 100%);
  color: #fff;
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  margin-bottom: 2.5rem;
  box-shadow: 0 14px 38px rgba(0, 61, 153, 0.25);
  position: relative;
  overflow: hidden;
}
.foerder-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at top right, rgba(107, 190, 69, 0.25), transparent 60%);
  pointer-events: none;
}
.foerder-hero-content { position: relative; z-index: 1; }
.foerder-hero-eyebrow {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #FFD700;
  margin-bottom: 0.6rem;
}
.foerder-hero h3 {
  font-size: 1.7rem;
  margin: 0 0 0.85rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #fff;
}
.foerder-hero p {
  font-size: 1rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.92);
  margin: 0 0 1.25rem;
}
.foerder-hero p strong { color: #FFD700; font-weight: 700; }
.foerder-hero-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
}
.foerder-hero-bullets li {
  padding: 0.35rem 0 0.35rem 1.5rem;
  position: relative;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
}
.foerder-hero-bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #6BBE45;
  font-weight: 700;
}
.foerder-hero-stat {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 1.5rem;
  background: rgba(0, 0, 0, 0.18);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
}
.foerder-hero-stat-num {
  font-size: 4rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: #FFD700;
  line-height: 1;
}
.foerder-hero-stat-num span {
  font-size: 2rem;
  font-weight: 700;
  margin-left: 0.1rem;
}
.foerder-hero-stat-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.85);
  margin: 0.5rem 0 1rem;
}
.foerder-hero-stat-bonus {
  display: inline-block;
  background: #6BBE45;
  color: #fff;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  letter-spacing: 0.02em;
}

/* 4 Förderkarten-Grid */
.foerder-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}
.foerder-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  position: relative;
  transition: all 0.25s;
}
.foerder-card:hover {
  transform: translateY(-3px);
  border-color: var(--blue-light);
  box-shadow: var(--shadow-lg);
}
.foerder-quote {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--blue);
  letter-spacing: -0.02em;
  line-height: 1;
  margin-bottom: 0.2rem;
}
.foerder-quote-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 1.2rem;
}
.foerder-card h4 {
  font-size: 1.05rem;
  margin: 0 0 0.2rem;
  font-weight: 700;
  color: var(--gray-900);
}
.foerder-subtitle {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--gray-600);
  margin-bottom: 0.85rem;
  font-weight: 500;
}
.foerder-card p {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--gray-700);
  margin: 0 0 1rem;
}
.foerder-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
}
.foerder-bullets li {
  padding: 0.3rem 0 0.3rem 1.1rem;
  position: relative;
  font-size: 0.8rem;
  color: var(--gray-600);
}
.foerder-bullets li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

/* CTA-Strip am Ende der Förderlandschaft */
.foerder-cta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 1.75rem 2rem;
}
.foerder-cta-strip h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.3rem;
  color: var(--gray-900);
}
.foerder-cta-strip p {
  font-size: 0.9rem;
  color: var(--gray-600);
  margin: 0;
}

/* Kontakt-Liste (mehrere Ansprechpartner) */
.contact-person-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-person-avatar--initial {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--blue) 0%, var(--blue-dark) 100%);
  color: var(--white);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 968px) {
  .ems-tier { grid-template-columns: 1fr; }
  .ems-tier-divider { transform: rotate(90deg); padding: 0.5rem 0; }
  .foerder-hero { grid-template-columns: 1fr; gap: 1.75rem; padding: 2rem; }
  .foerder-grid { grid-template-columns: repeat(2, 1fr); }
  .foerder-cta-strip { flex-direction: column; align-items: stretch; text-align: left; }
}
@media (max-width: 540px) {
  .foerder-hero { padding: 1.5rem; }
  .foerder-hero h3 { font-size: 1.35rem; }
  .foerder-hero-stat-num { font-size: 3rem; }
  .foerder-grid { grid-template-columns: 1fr; }
}

/* Responsive */
@media (max-width: 968px) {
  /* 3 Tabs bleiben auf Tablet noch nebeneinander – kompakter */
  .product-tab { padding: 0.9rem 1rem; }
  .product-tab-label { font-size: 0.88rem; }
  .product-tab-range { font-size: 0.72rem; }
  .product-grid--three { grid-template-columns: repeat(2, 1fr); }
  .product-grid--two   { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .product-tabs { grid-template-columns: 1fr; gap: 0.5rem; }
  .product-grid--three { grid-template-columns: 1fr; }
  .product-grid--single { grid-template-columns: 1fr; }
}