:root {
    --black:   #000000;
    --ink:     #111827;
    --body:    #374151;
    --mid:     #6B7280;
    --muted:   #9CA3AF;
    --subtle:  #E5E7EB;
    --surface: #F9FAFB;
    --white:   #FFFFFF;
    --orange:  #F97316;
  }

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

  html { background: var(--black); scroll-behavior: smooth; scroll-padding-top: 56px; }
  @media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

  body {
    font-family: 'Inter', sans-serif;
    background: var(--black);
    color: var(--body);
    font-size: 18px;
    line-height: 1.6;
    overflow-x: hidden;
  }

  /* ── Accessibility ───────────────────────── */
  .skip-link {
    position: fixed;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--orange);
    color: var(--white);
    padding: 12px 24px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    z-index: 9999;
    transition: top 0.2s;
    white-space: nowrap;
  }
  .skip-link:focus { top: 12px; }

  :focus-visible {
    outline: 2px solid var(--orange);
    outline-offset: 3px;
  }

  /* ── Utilities ───────────────────────────── */
  .mono {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
  }
  .sg { font-family: 'Space Grotesk', sans-serif; }

  /* ── Nav ─────────────────────────────────── */
  body > nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(0,0,0,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid #111;
    padding: 0 48px;
    transition: height 0.3s ease;
  }
  .nav-inner {
    max-width: 1040px;
    width: 100%;
    margin: 0 auto;
    padding: 0;
    height: 72px;
    display: flex; align-items: center; justify-content: space-between;
    position: relative;
    transition: height 0.3s ease;
  }
  nav.scrolled .nav-inner { height: 56px; }

  .nav-wordmark {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.6rem;
    color: var(--white);
    letter-spacing: -0.03em;
    text-decoration: none;
    flex-shrink: 0;
    line-height: 0.88;
    white-space: nowrap;
    transition: font-size 0.25s ease, line-height 0.25s ease;
  }
  .nav-wordmark:hover { color: var(--white); }
  .wm-break { display: inline; }
  nav.scrolled .nav-wordmark { font-size: 1.2rem; line-height: 1; }
  nav.scrolled .wm-break { display: none; }

  .nav-links {
    display: flex; align-items: center; gap: 20px;
  }
  .nav-links a {
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    color: #E5E7EB;
    text-decoration: none;
    position: relative;
    padding-bottom: 3px;
    transition: color 0.15s;
  }
  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0; height: 2px;
    background: var(--orange);
    transition: width 0.2s ease;
  }
  .nav-links a:hover { color: var(--white); }
  .nav-links a:hover::after { width: 100%; }
  .nav-contact {
    display: flex; align-items: center; gap: 5px;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    color: var(--white);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
  }
  .nav-contact:hover { color: var(--orange); }
  .nav-contact:hover svg line,
  .nav-contact:hover svg polyline { stroke: var(--orange); }

  .nav-linkedin {
    display: inline-flex; align-items: center;
    color: var(--white);
    text-decoration: none;
    line-height: 0;
    transition: color 0.15s;
  }
  .nav-linkedin svg { display: block; }
  .nav-linkedin:hover { color: var(--orange); }

  /* Hamburger */
  .nav-hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px; height: 32px;
    background: none; border: none;
    cursor: pointer; padding: 0;
  }
  .nav-hamburger span {
    display: block;
    width: 22px; height: 1.5px;
    background: var(--white);
    transition: transform 0.2s, opacity 0.2s;
  }
  .nav-hamburger.open { opacity: 0; pointer-events: none; }

  /* Mobile drawer */
  .nav-drawer {
    display: none;
    position: absolute;
    top: calc(100% + 8px);
    right: 20px;
    min-width: 200px;
    z-index: 99;
    background: #1a1a1a;
    border: 1px solid #333;
    padding: 8px 0;
    flex-direction: column;
    gap: 0;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
  }
  .nav-drawer.open { display: flex; }
  .nav-drawer a {
    font-family: 'Inter', sans-serif;
    font-size: 1rem;
    color: #D1D5DB;
    text-decoration: none;
    padding: 12px 20px;
    border-bottom: 1px solid #252525;
    transition: background 0.1s, color 0.1s;
  }
  .nav-drawer a:last-child { border-bottom: none; }
  .nav-drawer a:hover { color: var(--white); background: #222; }
  .nav-drawer-header {
    display: flex;
    justify-content: flex-end;
    padding: 10px 14px 4px;
    border-bottom: 1px solid #252525;
    margin-bottom: 4px;
  }
  .nav-drawer-close {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 28px; height: 28px;
    background: none; border: none;
    cursor: pointer; padding: 0;
    position: relative;
  }
  .nav-drawer-close span {
    display: block;
    width: 16px; height: 1.5px;
    background: var(--muted);
    position: absolute;
    transition: background 0.15s;
  }
  .nav-drawer-close span:nth-child(1) { transform: rotate(45deg); }
  .nav-drawer-close span:nth-child(2) { transform: rotate(-45deg); }
  .nav-drawer-close:hover span { background: var(--white); }

  /* ── Hero ────────────────────────────────── */
  .hero {
    background: var(--black);
    min-height: 100vh;
    padding: 60px 48px 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    overflow: hidden;
  }
  .hero-inner {
    max-width: 1040px;
    margin: 0 auto;
    width: 100%;
    padding: 80px 0 140px;
  }
  .hero-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 32px;
  }
  .hero-headline {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(3.5rem, 8vw, 7rem);
    color: var(--white);
    letter-spacing: -0.04em;
    line-height: 0.88;
    margin-bottom: 40px;
  }
  .hero-headline .line1 {
    display: block;
    overflow: hidden;
  }
  .hero-headline .line2 {
    display: block;
  }
  .tw-cursor {
    display: inline-block;
    width: 4px;
    height: 0.72em;
    background: var(--orange);
    margin-left: 12px;
    vertical-align: -0.05em;
    animation: blink 0.65s step-end infinite;
  }
  @keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
  }
  .hero-body {
    font-size: 1.4rem;
    color: var(--subtle);
    max-width: 620px;
    line-height: 1.6;
    margin-bottom: 56px;
  }
  .hero-ctas {
    display: flex; align-items: center; gap: 24px; flex-wrap: wrap;
  }

  /* ── Buttons ─────────────────────────────── */
  .btn-primary {
    display: flex; align-items: center; gap: 8px;
    background: var(--white);
    color: var(--ink);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 500;
    font-size: 0.95rem;
    padding: 12px 22px;
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: background 0.15s, color 0.15s, transform 0.1s;
    cursor: pointer;
  }
  .btn-primary:hover { background: var(--orange); color: var(--white); }
  .btn-primary:hover svg line,
  .btn-primary:hover svg polyline { stroke: var(--white); }
  .btn-primary:active { transform: scale(0.97); }

  .btn-ghost {
    display: flex; align-items: center; gap: 8px;
    color: var(--white);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: color 0.15s, transform 0.1s;
    cursor: pointer;
  }
  .btn-ghost svg line,
  .btn-ghost svg polyline { stroke: var(--white); }
  .btn-ghost:hover { color: var(--orange); }
  .btn-ghost:hover svg line,
  .btn-ghost:hover svg polyline { stroke: var(--orange); }
  .btn-ghost:active { transform: scale(0.97); }

  /* Orange CTA · for dark-section calls to action */
  .btn-cta {
    display: inline-flex; align-items: center; gap: 8px;
    background: var(--orange);
    color: var(--white);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    padding: 14px 28px;
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: background 0.15s, color 0.15s, transform 0.1s;
    cursor: pointer;
  }
  .btn-cta:hover { background: var(--white); color: var(--ink); }
  .btn-cta:hover svg line,
  .btn-cta:hover svg polyline { stroke: var(--ink); }
  .btn-cta:active { transform: scale(0.97); }

  .hero-divider {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: #111;
  }

  /* ── Sections shared ─────────────────────── */
  .section-wrap { background: var(--white); }
  section {
    max-width: 1040px;
    margin: 0 auto;
    padding: 96px 48px;
  }
  .section-full { max-width: 100%; padding: 0; }
  .section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
  }
  .section-label--light { color: var(--muted); }
  .section-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2.2rem, 3.5vw, 3.2rem);
    color: var(--ink);
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 20px;
  }
  .section-heading--light {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2rem, 3vw, 2.8rem);
    color: var(--white);
    letter-spacing: -0.03em;
    line-height: 1;
  }
  .section-heading .dot { color: var(--orange); }
  .section-sub {
    font-size: 1.05rem;
    color: var(--mid);
    max-width: 560px;
    line-height: 1.75;
    margin-bottom: 56px;
  }

  /* ── Formula bar · on white, design-system style ──
     Source: design-system preview/formula.html */
  .formula-bar {
    background: var(--white);
    padding: 88px 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-top: 1px solid var(--subtle);
    border-bottom: 1px solid var(--subtle);
    text-align: center;
  }
  .formula-text {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    color: var(--black);
    letter-spacing: -0.03em;
    line-height: 1.05;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0 0.4ch;
  }
  .formula-text .op {
    color: var(--muted);
    font-weight: 500;
    margin: 0 0.15ch;
  }
  .formula-text .op.eq { color: var(--orange); }
  /* Stacked mobile formula · shown only at mobile */
  .formula-mobile {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    color: var(--black);
    letter-spacing: -0.03em;
    line-height: 1.1;
  }
  .formula-mobile-line {
    font-size: clamp(1.5rem, 6.5vw, 2rem);
  }
  .formula-mobile-line .op {
    color: var(--muted);
    font-weight: 500;
    margin: 0 0.15ch;
  }
  .formula-mobile-eq {
    color: var(--orange);
    font-weight: 500;
    font-size: clamp(1.5rem, 6.5vw, 2rem);
    line-height: 1;
  }

  /* ── Stats strip ─────────────────────────── */
  .stats-strip {
    background: var(--ink);
    border-top: 1px solid #1F2937;
    border-bottom: 1px solid #1F2937;
    padding: 0 48px;
  }
  .stats-inner {
    max-width: 1040px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: #1F2937;
    border: 1px solid #1F2937;
    overflow: hidden;
  }
  .stat-item {
    background: var(--ink);
    padding: 40px 28px;
    transition: background 0.15s;
  }
  .stat-item:hover { background: #161F2E; }
  .stat-num {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2.4rem, 4vw, 3.6rem);
    color: var(--white);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 8px;
  }
  .stat-num .accent { color: var(--orange); }
  .stat-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.72rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--mid);
    line-height: 1.5;
  }

  /* ── Journey timeline · narrow alternating variant ──
     Labels alternate above & below a single hairline.
     Source: design-system preview/methodology.html */
  .journey-track {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 72px;
    min-height: 184px;
  }
  .journey-track::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 7px;
    right: 7px;
    height: 1px;
    background: #E5E7EB;
    transform: translateY(-50%);
    z-index: 0;
    pointer-events: none;
  }
  .journey-step {
    position: relative;
    z-index: 1;
    min-height: 160px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    cursor: default;
  }
  .journey-node {
    width: 14px; height: 14px;
    border-radius: 50%;
    border: 1.5px solid #D1D5DB;
    background: var(--white);
    font-size: 0;
    color: transparent;
    position: relative;
    z-index: 1;
    animation: journey-pulse 6s ease-in-out infinite;
  }
  .journey-step:nth-child(1) .journey-node { animation-delay: 0s; }
  .journey-step:nth-child(2) .journey-node { animation-delay: 1s; }
  .journey-step:nth-child(3) .journey-node { animation-delay: 2s; }
  .journey-step:nth-child(4) .journey-node { animation-delay: 3s; }
  .journey-step:nth-child(5) .journey-node { animation-delay: 4s; }
  .journey-step:nth-child(6) .journey-node { animation-delay: 5s; }
  @keyframes journey-pulse {
    0%, 100% {
      background: var(--white);
      border-color: #D1D5DB;
      box-shadow: 0 0 0 0 rgba(249, 115, 22, 0);
    }
    8%, 16% {
      background: var(--orange);
      border-color: var(--orange);
      box-shadow: 0 0 0 5px rgba(249, 115, 22, 0.14);
    }
    24% {
      background: var(--white);
      border-color: #D1D5DB;
      box-shadow: 0 0 0 0 rgba(249, 115, 22, 0);
    }
  }
  @media (prefers-reduced-motion: reduce) {
    .journey-node { animation: none; }
    .journey-step:first-child .journey-node {
      background: var(--orange);
      border-color: var(--orange);
      box-shadow: 0 0 0 5px rgba(249, 115, 22, 0.14);
    }
  }
  .journey-name {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    line-height: 1;
    color: var(--ink);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
  }
  .journey-name::after {
    content: '';
    display: block;
    width: 1px;
    height: 18px;
    background: #D1D5DB;
  }
  .journey-step:nth-child(odd) .journey-name {
    flex-direction: column;
    bottom: calc(50% + 7px);
  }
  .journey-step:nth-child(even) .journey-name {
    flex-direction: column-reverse;
    top: calc(50% + 7px);
  }
  .journey-desc { display: none; }
  .journey-entry {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 52px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.75rem;
    color: var(--muted);
    letter-spacing: 0.08em;
    text-transform: uppercase;
  }
  .journey-entry-line {
    flex: 1;
    max-width: 80px;
    height: 1px;
    background: #E5E7EB;
  }
  .journey-entry-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--orange);
    flex-shrink: 0;
  }

  /* ── Services ────────────────────────────── */
  .services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--subtle);
    border: 1px solid var(--subtle);
    overflow: hidden;
  }
  .service-card {
    background: var(--white);
    padding: 32px 28px;
    transition: background 0.2s, box-shadow 0.2s;
    position: relative;
  }
  .service-card:hover {
    background: var(--surface);
    box-shadow: inset 0 0 0 1px #D1D5DB;
  }
  .service-card-name {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--ink);
    letter-spacing: -0.01em;
    margin-top: 16px;
    margin-bottom: 10px;
  }
  .service-card-desc {
    font-size: 0.95rem;
    color: var(--mid);
    line-height: 1.65;
  }
  .service-arrow {
    position: absolute;
    top: 28px; right: 28px;
    opacity: 0.35;
    transition: opacity 0.15s, transform 0.15s;
  }
  .service-card:hover .service-arrow {
    opacity: 0.85;
    transform: translate(2px, -2px);
  }

  /* Dark service card · highlighted, standard grid position */
  .service-card--dark {
    background: var(--ink);
  }
  .service-card--dark:hover {
    background: #161F2E;
    box-shadow: none;
  }
  .service-card--dark .service-card-name {
    color: var(--white);
  }
  .service-card--dark .service-card-desc {
    color: var(--subtle);
  }
  .service-card--dark .service-arrow line,
  .service-card--dark .service-arrow polyline {
    stroke: var(--white);
  }
  .service-card--dark svg:first-child rect:first-child {
    fill: #1F2937;
  }
  .service-card--dark svg:first-child rect:not(:first-child),
  .service-card--dark svg:first-child line,
  .service-card--dark svg:first-child polyline {
    stroke: #6B7280;
  }

  /* Featured service card · spans full row */
  .service-card--featured {
    grid-column: 1 / -1;
    background: var(--ink);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 28px;
    padding: 36px 40px;
  }
  .service-card--featured:hover {
    background: #161F2E;
    transform: none;
    box-shadow: none;
  }
  .service-card--featured .service-card-name {
    color: var(--white);
    font-size: 1.25rem;
    margin-top: 0;
    margin-bottom: 8px;
  }
  .service-card--featured .service-card-desc {
    color: var(--mid);
    max-width: 540px;
  }
  .service-card--featured .service-arrow {
    position: static;
    opacity: 0.4;
  }
  .service-card--featured:hover .service-arrow {
    opacity: 0.9;
    transform: translate(2px, -2px);
  }
  .service-card--featured-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--orange);
    border: 1px solid var(--orange);
    padding: 3px 10px;
    margin-bottom: 10px;
  }

  /* ── Specialist strip ────────────────────── */
  .specialist-strip {
    background: var(--black);
    padding: 64px 48px;
    border-top: 1px solid #111;
    border-bottom: 1px solid #111;
  }
  .specialist-inner { max-width: 1040px; margin: 0 auto; }
  .specialist-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1px;
    background: #111;
    border: 1px solid #111;
    overflow: hidden;
    margin-top: 40px;
  }
  .specialist-card {
    background: var(--black);
    padding: 28px 24px;
    transition: background 0.15s;
  }
  .specialist-card:hover { background: #0A0A0A; }
  .specialist-name {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--white);
    letter-spacing: -0.01em;
    margin-top: 14px;
    margin-bottom: 8px;
  }
  .specialist-desc {
    font-size: 0.9rem;
    color: var(--mid);
    line-height: 1.65;
  }

  /* ── Content channels ────────────────────── */
  .channels-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background: #111;
    border: 1px solid #111;
    overflow: hidden;
  }
  .channel-card {
    background: var(--ink);
    padding: 40px 36px;
  }
  .channel-card.dark { background: var(--black); }
  .channel-tag {
    display: inline-block;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 5px 12px;
    border: 1px solid #333;
    color: var(--muted);
    margin-bottom: 20px;
  }
  .channel-tag.orange { border-color: var(--orange); color: var(--orange); }
  .channel-name {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--white);
    letter-spacing: -0.02em;
    margin-bottom: 14px;
    line-height: 1.25;
  }
  .channel-desc {
    font-size: 1rem;
    color: var(--mid);
    line-height: 1.75;
    margin-bottom: 32px;
    max-width: 380px;
  }
  .channel-sublabel {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 16px;
  }

  /* ── CTA banner ──────────────────────────── */
  .cta-banner {
    background: var(--black);
    padding: 96px 48px;
    border-top: 1px solid #111;
    text-align: left;
  }
  .cta-inner { max-width: 1040px; margin: 0 auto; }
  .cta-body { max-width: 56ch; }
  .cta-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 20px;
  }
  .cta-heading {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: clamp(2.2rem, 3.5vw, 3.2rem);
    color: var(--white);
    letter-spacing: -0.03em;
    line-height: 1;
    margin-bottom: 20px;
  }
  .cta-body {
    font-size: 1.05rem;
    color: var(--mid);
    line-height: 1.75;
    margin-bottom: 44px;
  }

  /* ── Footer ──────────────────────────────── */
  footer {
    background: var(--black);
    border-top: 1px solid #111;
    padding: 40px 48px;
  }
  .footer-inner {
    max-width: 1040px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
  }
  .footer-wordmark {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--white);
    letter-spacing: -0.02em;
    line-height: 1;
  }
  .footer-links {
    display: flex;
    gap: 32px;
    align-items: center;
    flex-wrap: wrap;
  }
  .footer-links a {
    font-size: 0.9rem;
    color: var(--mid);
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    transition: color 0.15s;
  }
  .footer-links a:hover { color: var(--white); }
  .footer-links a.footer-ext {
    display: flex;
    align-items: center;
    gap: 5px;
  }
  .footer-links a.footer-ext svg line,
  .footer-links a.footer-ext svg polyline { stroke: var(--mid); transition: stroke 0.15s; }
  .footer-links a.footer-ext:hover svg line,
  .footer-links a.footer-ext:hover svg polyline { stroke: var(--white); }
  .footer-copy {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--mid);
    text-transform: uppercase;
  }

  /* ── Divider ─────────────────────────────── */
  .rule { border: none; border-top: 1px solid #111; }

  /* ══════════════════════════════════════════
     RESPONSIVE
  ══════════════════════════════════════════ */

  /* ── Tablet  768px ───────────────────────── */
  @media (max-width: 768px) {
    body > nav { padding: 0 24px; }
    .nav-inner { padding: 0; }

    .hero { padding: 60px 24px 0; }
    .hero-inner { padding: 64px 0 80px; }
    .hero-body { font-size: 1rem; max-width: 100%; }

    .formula-bar { padding: 32px 24px; }

    section { padding: 72px 24px; }

    /* Journey · tighter spacing on tablet */
    .journey-track { margin-top: 48px; min-height: 144px; }
    .journey-step { min-height: 128px; }
    .journey-name { font-size: 0.85rem; gap: 6px; }
    .journey-name::after { height: 12px; }
    .journey-entry { margin-top: 36px; }

    .services-grid { grid-template-columns: repeat(2, 1fr); }
    .service-card--featured { grid-template-columns: auto 1fr; }
    .service-card--featured .service-arrow { display: none; }

    .specialist-strip { padding: 56px 24px; }
    .specialist-grid { grid-template-columns: repeat(2, 1fr); }

    .stats-strip { padding: 0 24px; }
    .stats-inner { grid-template-columns: repeat(2, 1fr); }

    .channels-grid { grid-template-columns: 1fr; }
    .channel-desc { max-width: 100%; }

    .cta-banner { padding: 72px 24px; }

    footer { padding: 32px 24px; }
    .footer-inner { flex-direction: column; align-items: flex-start; gap: 12px; }
  }

  /* ── Mobile  480px ───────────────────────── */
  @media (max-width: 480px) {
    body > nav { padding: 0 20px; }
    .nav-inner { padding: 0; }
    .nav-links { display: none; }
    .nav-hamburger { display: flex; }

    /* Journey · tightest spacing at mobile */
    .journey-track { min-height: 128px; margin-top: 40px; }
    .journey-name { font-size: 0.72rem; gap: 4px; }
    .journey-name::after { height: 8px; }

    .hero { padding: 60px 20px 0; min-height: 100svh; }
    .hero-inner { padding: 48px 0 72px; }
    .hero-label { margin-bottom: 24px; }
    .hero-headline { margin-bottom: 28px; line-height: 0.9; }
    .hero-body { font-size: 0.95rem; margin-bottom: 36px; }
    .hero-ctas { gap: 14px; }
    .btn-primary { padding: 14px 22px; }

    /* Formula · hide desktop, show stacked mobile */
    .formula-bar { padding: 32px 20px; }
    .formula-text { display: none; }
    .formula-mobile { display: flex; }

    section { padding: 56px 20px; }
    .section-sub { font-size: 0.95rem; margin-bottom: 40px; max-width: 100%; }


    .services-grid { grid-template-columns: 1fr; }
    .service-card--featured { grid-template-columns: 1fr; gap: 12px; padding: 28px 20px; }
    .service-arrow { opacity: 0.6; }

    .specialist-strip { padding: 48px 20px; }
    .specialist-grid { grid-template-columns: 1fr; }

    .stats-strip { padding: 0 20px; }
    .stats-inner { grid-template-columns: repeat(2, 1fr); }
    .stat-item { padding: 28px 20px; }

    .channel-card { padding: 32px 24px; }

    .cta-banner { padding: 56px 20px; }

    footer { padding: 28px 20px; }
  }