  :root {
    --navy: #16243f;
    --navy-2: #24365c;
    --slate: #45506a;
    --lime: #93b81b;        /* bright lime — decorative fills, large accents, buttons */
    --lime-ink: #4f6900;    /* deep lime — text-safe green for small labels & links (darkened for AA on white) */
    --lime-tint: #eef3d6;   /* soft lime tint — icon backgrounds, avatars */
    --lime-tint2: #dde8b8;  /* lime gradient partner */
    --cream: #faf9f5;
    --sand: #f3f2ea;
    --white: #ffffff;
    --text: #1f2733;
    --text-light: #5b6577;
    --radius: 12px;
    /* System font stacks (no third-party CDN). Serif for headings, humanist sans for body. */
    --font-serif: 'DM Serif Display', Georgia, 'Times New Roman', 'Iowan Old Style', serif;
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  }

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

  body {
    font-family: var(--font-sans);
    color: var(--text);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
  }

  /* ── ACCESSIBILITY: visible keyboard focus ── */
  a:focus-visible, button:focus-visible {
    outline: 3px solid var(--lime-ink);
    outline-offset: 3px;
    border-radius: 4px;
  }
  .skip-link {
    position: absolute; left: -999px; top: 0; z-index: 200;
    background: var(--navy); color: #fff; padding: 12px 20px; border-radius: 0 0 8px 0;
    text-decoration: none; font-weight: 700;
  }
  .skip-link:focus { left: 0; }

  /* ── LANGUAGE TOGGLE ── */
  /* Default state: show German, hide English. Toggling adds .lang-en to <html>. */
  .lang-de { display: inline; }
  .lang-en { display: none; }
  html.show-en .lang-de { display: none; }
  html.show-en .lang-en { display: inline; }
  /* block-level language wrappers */
  .lblock.lang-de { display: block; }
  .lblock.lang-en { display: none; }
  html.show-en .lblock.lang-de { display: none; }
  html.show-en .lblock.lang-en { display: block; }

  .lang-switch {
    display: flex; align-items: center; gap: 2px;
    border: 1px solid rgba(22,36,63,0.25); border-radius: 8px; overflow: hidden;
  }
  .lang-switch button {
    background: transparent; border: none; cursor: pointer;
    font-family: var(--font-sans); font-weight: 700; font-size: 0.85rem;
    padding: 7px 12px; color: var(--slate); transition: all 0.2s;
  }
  .lang-switch button[aria-pressed="true"] { background: var(--lime); color: var(--navy); }

  /* ── NAV ── */
  nav {
    position: fixed; top: 0; width: 100%; z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    padding: 0 40px;
    display: flex; align-items: center; justify-content: space-between;
    height: 72px;
  }
  .logo {
    font-family: var(--font-serif);
    font-size: 1.4rem; color: var(--navy);
    display: flex; align-items: center; gap: 10px;
  }
  .logo-mark {
    width: 36px; height: 36px; background: var(--lime);
    border-radius: 8px; display: flex; align-items: center; justify-content: center;
    color: var(--navy); font-weight: 700; font-size: 1.1rem;
  }
  nav ul { list-style: none; display: flex; gap: 28px; align-items: center; }

  /* ── MOBILE NAV TOGGLE (hidden on desktop) ── */
  .nav-toggle {
    display: none;
    align-items: center; gap: 8px;
    background: transparent; border: 1px solid rgba(22,36,63,0.25);
    border-radius: 8px; padding: 8px 14px; cursor: pointer;
    font-family: var(--font-sans); font-weight: 700; font-size: 0.9rem;
    color: var(--navy);
  }
  .nav-toggle-bars { display: inline-flex; flex-direction: column; gap: 4px; }
  .nav-toggle-bars span {
    display: block; width: 20px; height: 2px; background: var(--navy); border-radius: 2px;
  }
  nav a { text-decoration: none; color: var(--slate); font-weight: 500; font-size: 0.95rem; transition: color 0.2s; }
  nav a:hover { color: var(--lime-ink); }
  .nav-cta {
    background: var(--lime); color: var(--navy) !important; padding: 10px 24px;
    border-radius: 8px; font-weight: 700; transition: background 0.2s;
  }
  .nav-cta:hover { background: #84a610; }

  /* ── HERO ── */
  .hero {
    min-height: 90vh;
    display: flex; align-items: center; justify-content: center;
    padding: 120px 80px 80px;
    background: var(--cream);
    color: var(--navy);
    position: relative;
    overflow: hidden;
  }
  .hero::after {
    content: '';
    position: absolute; right: -100px; top: -100px;
    width: 600px; height: 600px;
    background: radial-gradient(circle, rgba(147,184,27,0.12) 0%, transparent 70%);
    border-radius: 50%;
  }
  .hero-inner {
    max-width: 1200px; width: 100%;
    display: flex; align-items: center; justify-content: space-between;
    gap: 64px; position: relative; z-index: 2;
  }
  .hero-content { max-width: 660px; }
  .hero-badge {
    display: inline-block;
    background: var(--lime-tint);
    border: 1px solid rgba(147,184,27,0.4);
    color: var(--lime-ink);
    padding: 6px 16px; border-radius: 20px;
    font-size: 0.85rem; font-weight: 700;
    margin-bottom: 24px; letter-spacing: 0.5px;
  }
  .hero h1 {
    font-family: var(--font-serif);
    font-size: 3.6rem; line-height: 1.15;
    margin-bottom: 24px; color: var(--navy);
  }
  .hero h1 span { color: var(--lime-ink); }
  .hero p {
    font-size: 1.2rem; line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 40px; max-width: 540px;
  }
  .hero-buttons { display: flex; gap: 16px; flex-wrap: wrap; }
  .btn-primary {
    background: var(--lime); color: var(--navy);
    padding: 14px 32px; border-radius: 8px;
    font-size: 1rem; font-weight: 700;
    text-decoration: none; border: none; cursor: pointer;
    transition: all 0.2s;
  }
  .btn-primary:hover { background: #84a610; transform: translateY(-1px); }
  .btn-secondary {
    background: transparent; color: var(--navy);
    padding: 14px 32px; border-radius: 8px;
    font-size: 1rem; font-weight: 600;
    text-decoration: none; border: 2px solid rgba(22,36,63,0.25);
    transition: all 0.2s;
  }
  .btn-secondary:hover { border-color: var(--navy); }

  .hero-stats {
    display: flex; flex-direction: column; gap: 24px;
    flex-shrink: 0;
  }
  .stat-card {
    background: var(--white);
    border: 1px solid rgba(22,36,63,0.1);
    border-radius: var(--radius); padding: 28px 36px;
    text-align: center; min-width: 210px;
    box-shadow: 0 4px 20px rgba(22,36,63,0.06);
  }
  .stat-card .num {
    font-family: var(--font-serif);
    font-size: 2.8rem; color: var(--lime-ink);
    display: block;
  }
  .stat-card .label {
    font-size: 0.9rem; color: var(--text-light);
    margin-top: 4px;
  }

  /* ── SECTION SHARED ── */
  section { padding: 100px 80px; }
  .section-label {
    text-transform: uppercase; font-size: 0.8rem; font-weight: 700;
    color: var(--lime-ink); letter-spacing: 2px; margin-bottom: 12px;
  }
  .section-title {
    font-family: var(--font-serif);
    font-size: 2.6rem; color: var(--navy); margin-bottom: 20px;
    line-height: 1.2;
  }
  .section-sub {
    font-size: 1.1rem; color: var(--text-light);
    max-width: 620px; margin-bottom: 60px;
  }

  /* ── PROBLEM/SOLUTION ── */
  .problem { background: var(--sand); }
  .problem-grid {
    display: grid; grid-template-columns: 1fr 1fr;
    column-gap: 60px; row-gap: 20px;
    align-items: stretch;
  }
  .ps-header { align-self: end; }
  .ps-header .section-sub { margin-bottom: 0; }
  .pain-points { display: flex; flex-direction: column; gap: 20px; }
  .pain-item {
    display: flex; gap: 16px; align-items: flex-start;
    background: white; padding: 24px; border-radius: var(--radius);
    border-left: 4px solid var(--navy);
  }
  .pain-icon { font-size: 1.4rem; flex-shrink: 0; margin-top: 2px; color: var(--slate); }
  .pain-item h4 { font-size: 1rem; margin-bottom: 4px; color: var(--navy); }
  .pain-item p { font-size: 0.9rem; color: var(--text-light); line-height: 1.5; }

  .solution-items { display: flex; flex-direction: column; gap: 20px; }
  .sol-item {
    display: flex; gap: 16px; align-items: flex-start;
    background: white; padding: 24px; border-radius: var(--radius);
    border-left: 4px solid var(--lime);
  }

  /* ── SERVICES ── */
  .services-grid {
    display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px;
  }
  .service-card {
    background: var(--white); border: 1px solid #e8eaed;
    border-radius: var(--radius); padding: 40px 32px;
    transition: all 0.3s; position: relative; overflow: hidden;
  }
  .service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    border-color: var(--lime);
  }
  .service-icon {
    width: 56px; height: 56px;
    background: var(--lime-tint); border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.6rem; margin-bottom: 24px;
  }
  .service-card h3 {
    font-size: 1.25rem; color: var(--navy); margin-bottom: 12px;
  }
  .service-card p {
    font-size: 0.95rem; color: var(--text-light); margin-bottom: 20px;
  }
  .service-tags { display: flex; flex-wrap: wrap; gap: 8px; }
  .tag {
    background: var(--sand); padding: 4px 12px; border-radius: 6px;
    font-size: 0.8rem; color: var(--slate); font-weight: 500;
  }

  /* ── PROCESS ── */
  .process { background: var(--cream); color: var(--text); }
  .process-steps {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px;
  }
  .step {
    text-align: center; padding: 32px 20px;
    position: relative;
  }
  .step-num {
    font-family: var(--font-serif);
    font-size: 3rem; color: var(--lime); opacity: 0.7;
    margin-bottom: 16px;
  }
  .step h4 { font-size: 1.1rem; margin-bottom: 10px; color: var(--navy); }
  .step p { font-size: 0.9rem; color: var(--text-light); line-height: 1.6; }

  /* ── TESTIMONIALS ── */
  .testimonials { background: var(--sand); }
  .test-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
  .test-card {
    background: white; padding: 36px; border-radius: var(--radius);
    position: relative;
  }
  .test-card::before {
    content: '\201C'; font-family: var(--font-serif);
    font-size: 4rem; color: var(--lime); opacity: 0.3;
    position: absolute; top: 12px; left: 24px;
  }
  .test-quote {
    font-size: 0.95rem; color: var(--text); line-height: 1.8;
    margin-bottom: 24px; padding-top: 20px;
    font-style: italic;
  }
  .test-author { display: flex; align-items: center; gap: 12px; }
  .test-avatar {
    width: 44px; height: 44px; background: var(--lime-tint);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-weight: 700; color: var(--lime-ink); font-size: 0.9rem;
  }
  .test-name { font-weight: 600; font-size: 0.9rem; color: var(--navy); }
  .test-role { font-size: 0.8rem; color: var(--text-light); }

  /* ── FOUNDER ── */
  .founder-section {
    display: grid; grid-template-columns: 1fr 1.2fr; gap: 80px;
    align-items: center;
  }
  /* Portrait 4:5 founder frame: ratio locked, width fluid. It tracks its column
     (width:100%) but is bounded by max-width:360px so it never grows beyond a
     sensible portrait size. The 4:5 aspect-ratio keeps crop/composition constant
     at any window width. Centred in its column so the wider image column doesn't
     strand it against one edge. */
  .founder-section > .founder-image { justify-self: center; }
  .founder-image {
    background: linear-gradient(135deg, var(--lime-tint), var(--lime-tint2));
    aspect-ratio: 4 / 5;
    width: 100%;
    max-width: 360px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.10);
    border: 1px solid rgba(0,0,0,0.06);
    display: flex; align-items: center; justify-content: center;
    position: relative; overflow: hidden;
  }
  .founder-text h3 {
    font-family: var(--font-serif);
    font-size: 2rem; color: var(--navy); margin-bottom: 20px;
  }
  .founder-text p {
    font-size: 1.05rem; color: var(--text-light); margin-bottom: 16px;
    line-height: 1.8;
  }
  .founder-creds {
    display: flex; gap: 24px; margin-top: 32px; flex-wrap: wrap;
  }
  .cred {
    display: flex; align-items: center; gap: 8px;
    font-size: 0.9rem; color: var(--slate); font-weight: 500;
  }
  .cred-dot {
    width: 8px; height: 8px; background: var(--lime);
    border-radius: 50%; flex-shrink: 0;
  }

  /* ── TEAM ── */
  .team { background: var(--cream); }
  .team-grid {
    display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px;
  }
  .team-card {
    background: white; padding: 36px; border-radius: var(--radius);
    border: 1px solid #e8eaed;
    text-align: left;
  }
  .team-avatar {
    width: 72px; height: 72px; border-radius: 50%;
    background: linear-gradient(135deg, var(--lime-tint), var(--lime-tint2));
    display: flex; align-items: center; justify-content: center;
    color: var(--lime-ink); font-size: 1.6rem; font-weight: 700;
    margin-bottom: 20px;
  }
  .team-card h4 {
    font-size: 1.15rem; color: var(--navy); margin-bottom: 4px;
  }
  .team-card .team-role {
    font-size: 0.85rem; color: var(--lime-ink);
    font-weight: 600; letter-spacing: 0.5px;
    text-transform: uppercase; margin-bottom: 16px;
  }
  .team-card p {
    font-size: 0.9rem; color: var(--text-light); line-height: 1.6;
  }

  /* ── INDUSTRIES ── */
  .industries { background: var(--sand); }
  .ind-grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px;
  }
  .ind-item {
    background: white; padding: 28px 24px; border-radius: var(--radius);
    text-align: center; font-weight: 500; color: var(--slate);
    font-size: 0.95rem; transition: all 0.2s;
    border: 1px solid transparent;
  }
  .ind-item:hover { border-color: var(--lime); color: var(--lime-ink); }
  .ind-icon { font-size: 1.8rem; margin-bottom: 12px; display: block; }

  /* ── EXECUTIVE INTENSIVES BANNER ── */
  .intensives-banner {
    background: linear-gradient(135deg, var(--navy), var(--navy-2));
    color: white; padding: 60px 80px;
    display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 24px;
  }
  .intensives-banner h3 {
    font-family: var(--font-serif);
    font-size: 1.8rem; margin-bottom: 8px;
  }
  .intensives-banner p { font-size: 1rem; opacity: 0.95; max-width: 640px; }
  .btn-white {
    background: var(--lime); color: var(--navy);
    padding: 14px 32px; border-radius: 8px;
    font-size: 1rem; font-weight: 700;
    text-decoration: none; transition: all 0.2s;
    white-space: nowrap;
  }
  .btn-white:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(0,0,0,0.2); }

  /* ── CTA SECTION ── */
  .cta-section {
    background: var(--cream); color: var(--text); text-align: center;
    padding: 100px 80px;
  }
  .cta-section .section-title { color: var(--navy); margin-bottom: 16px; }
  .cta-section p {
    color: var(--text-light); font-size: 1.1rem;
    max-width: 540px; margin: 0 auto 40px;
  }
  .cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
  .cta-contact {
    margin-top: 40px; font-size: 0.95rem; color: var(--text-light);
  }
  .cta-contact a { color: var(--lime-ink); text-decoration: none; }

  /* ── FOOTER ── */
  footer {
    background: var(--navy); color: rgba(255,255,255,0.7);
    padding: 48px 80px;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.85rem; flex-wrap: wrap; gap: 16px;
  }
  .footer-logo {
    font-family: var(--font-serif);
    color: white; font-size: 1.1rem;
  }
  footer a { color: rgba(255,255,255,0.85); text-decoration: none; }
  footer a:hover { color: var(--lime); }

  /* ── NUMBERS BAND ── */
  .num-band { background: var(--white); padding: 72px 80px; border-bottom: 1px solid rgba(0,0,0,0.06); }
  .num-band-inner { max-width: 1100px; margin: 0 auto; }
  .num-band-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 44px 32px; text-align: center; }
  .num-band .num { font-family: var(--font-serif); font-size: 3rem; color: var(--lime-ink); display: block; line-height: 1; }
  .num-band .label { font-size: 0.95rem; color: var(--text-light); margin-top: 10px; }

  /* ── LEGAL ── */
  .legal h2 { font-family: var(--font-serif); }
  .legal h3 { color: var(--navy); margin: 24px 0 8px; font-size: 1.1rem; }
  .legal p { color: var(--text); line-height: 1.9; }

  /* ── RESPONSIVE ── */
  @media (max-width: 1024px) {
    section { padding: 80px 40px; }
    .hero { padding: 120px 40px 80px; }
    .hero h1 { font-size: 2.6rem; }
    .hero-stats { display: none; }
    .services-grid { grid-template-columns: 1fr 1fr; }
    .process-steps { grid-template-columns: 1fr 1fr; }
    .test-grid { grid-template-columns: 1fr; }
    .team-grid { grid-template-columns: 1fr; }
    .founder-section { grid-template-columns: 1fr; }
    /* aspect-ratio 4/5 drives height on mobile too; keep the capped frame centred */
    .founder-section > .founder-image { justify-self: center; }
    .problem-grid { grid-template-columns: 1fr; }
    .problem-grid .ps-left { order: 1; }
    .problem-grid .pain-item { order: 2; }
    .problem-grid .ps-right { order: 3; }
    .problem-grid .sol-item { order: 4; }
    .ind-grid { grid-template-columns: 1fr 1fr; }
    .intensives-banner { padding: 40px; }
    .num-band { padding: 60px 40px; }
  }
  @media (max-width: 640px) {
    nav { padding: 0 20px; position: fixed; flex-wrap: wrap; }
    .nav-toggle { display: inline-flex; }
    /* Menu collapses into a dropdown panel below the bar; opened via the toggle. */
    nav ul {
      display: none;
      position: absolute; top: 72px; left: 0; right: 0;
      flex-direction: column; align-items: stretch; gap: 0;
      background: var(--white);
      border-bottom: 1px solid rgba(0,0,0,0.08);
      box-shadow: 0 12px 24px rgba(22,36,63,0.10);
      padding: 8px 0;
    }
    nav ul.is-open { display: flex; }
    nav ul li { width: 100%; }
    nav ul li a { display: block; padding: 14px 20px; font-size: 1rem; }
    nav ul li .lang-switch { margin: 8px 20px; width: max-content; }
    nav ul li .nav-cta { margin: 8px 20px; text-align: center; }
    section { padding: 60px 20px; }
    .hero { padding: 100px 20px 60px; }
    .hero h1 { font-size: 2rem; }
    .services-grid { grid-template-columns: 1fr; }
    .process-steps { grid-template-columns: 1fr; }
    .section-title { font-size: 2rem; }
    .ind-grid { grid-template-columns: 1fr 1fr; }
    .num-band { padding: 48px 20px; }
    .num-band-grid { grid-template-columns: 1fr 1fr; gap: 32px 20px; }
    .num-band .num { font-size: 2.4rem; }
  }

  /* ── MULTI-PAGE ADDITIONS ── */
  /* Active nav state: current page link carries .is-active */
  nav a.is-active { color: var(--lime-ink); font-weight: 700; }
  nav a.nav-cta.is-active { color: var(--navy) !important; }

  /* Anti-flash: hide both language layers until the inline head script
     has resolved the chosen language and set .show-en or .show-de on <html>.
     This prevents a flash of the wrong language when navigating between pages. */
  html:not(.show-en):not(.show-de) .lang-de,
  html:not(.show-en):not(.show-de) .lang-en,
  html:not(.show-en):not(.show-de) .lblock { visibility: hidden; }

  /* Founder photo on team page */
  .founder-image img { width: 100%; height: 100%; object-fit: cover; object-position: center 28%; }

  /* Page hero (interior pages): a lighter banner than the home hero */
  .page-hero {
    background: var(--cream);
    padding: 140px 80px 64px;
    text-align: center;
  }
  .page-hero h1 {
    font-family: var(--font-serif);
    font-size: 3rem; line-height: 1.15; color: var(--navy);
    max-width: 880px; margin: 0 auto 16px;
  }
  .page-hero p {
    font-size: 1.15rem; color: var(--text-light);
    max-width: 620px; margin: 0 auto;
  }
  @media (max-width: 1024px) {
    .page-hero { padding: 120px 40px 56px; }
    .page-hero h1 { font-size: 2.4rem; }
  }
  @media (max-width: 640px) {
    .page-hero { padding: 100px 20px 48px; }
    .page-hero h1 { font-size: 1.9rem; }
  }
