:root {
    --bg: #0a0a0a;
    --surface: #111111;
    --surface-raised: #1a1a1a;
    --border: #222222;
    --border-accent: #333333;
    --text: #e8e8e8;
    --text-muted: #888888;
    --text-dim: #666666;
    --accent: #4f8fff;
    --accent-dim: rgba(79, 143, 255, 0.12);
    --accent-glow: rgba(79, 143, 255, 0.06);
    --success: #34d399;
    --white: #ffffff;
    --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
    --max-width: 860px;
    --section-gap: 7rem;
  }


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

  html { scroll-behavior: smooth; }

  body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.7;
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
  }

  ::selection {
    background: var(--accent);
    color: var(--white);
  }

  /* ── NAV ── */
  nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 0 2rem;
  }

  nav .nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
  }

  .nav-logo-icon {
    height: 28px;
    opacity: 0.9;
    margin-right: 0.6rem;
    vertical-align: middle;
  }

  .nav-wordmark {
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--white);
    vertical-align: middle;
  }

  .nav-wordmark span {
    color: var(--accent);
  }

  nav a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    transition: color 0.2s;
    margin-left: 2rem;
  }

  nav a:hover { color: var(--white); }

  .nav-links { display: flex; align-items: center; }

  .mobile-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
  }

  /* ── SECTIONS ── */
  section {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: var(--section-gap) 2rem;
  }

  /* ── HERO ── */
  .hero {
    padding-top: calc(60px + 6rem);
    padding-bottom: var(--section-gap);
  }

  .hero h1 {
    font-size: clamp(2.2rem, 5vw, 3.2rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.15;
    color: var(--white);
    margin-bottom: 1.5rem;
  }

  .hero p {
    font-size: 1.1rem;
    color: var(--text-muted);
    max-width: 620px;
    line-height: 1.75;
    margin-bottom: 2rem;
  }

  .hero-ctas {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
  }

  .hero-ctas a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.6rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.2s;
  }

  .cta-primary {
    background: var(--accent);
    color: var(--white);
  }

  .cta-primary:hover {
    background: #3a7aee;
    transform: translateY(-1px);
  }

  .cta-secondary {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-accent);
  }

  .cta-secondary:hover {
    color: var(--white);
    border-color: var(--text-dim);
  }

  /* ── PROOF BAR ── */
  .proof-bar {
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    background: var(--accent-glow);
    padding: 1.5rem 2rem;
    max-width: 100%;
    margin: 0;
    width: 100%;
  }

  .proof-bar-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    text-align: center;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.01em;
  }

  .proof-bar-inner strong {
    color: var(--accent);
  }

  /* ── SECTION HEADERS ── */
  .section-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--accent);
    margin-bottom: 1rem;
  }

  h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }

  h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
  }

  /* ── PITCH ── */
  .pitch p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
  }

  .pitch .scenarios {
    margin: 2rem 0;
    padding-left: 0;
    list-style: none;
  }

  .pitch .scenarios li {
    color: var(--text);
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
  }

  .pitch .scenarios li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    transform: translateY(-50%);
  }

  /* ── PLATFORM ── */
  .platform-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
  }

  .platform-chip {
    text-align: center;
    padding: 1rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    background: var(--surface);
    transition: all 0.2s;
  }

  .platform-chip svg {
    display: block;
    margin: 0 auto 0.5rem;
    stroke: var(--accent);
    width: 24px;
    height: 24px;
  }

  .platform-chip:hover {
    border-color: var(--border-accent);
    color: var(--text);
  }

  /* ── VERTICALS ── */
  .verticals {
    display: flex;
    flex-direction: column;
    gap: 4rem;
  }

  .vertical-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2.5rem;
    transition: border-color 0.3s;
  }

  .vertical-card:hover {
    border-color: var(--border-accent);
  }

  .vertical-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: 1.5rem;
  }

  .vertical-header h3 {
    margin-bottom: 0;
  }

  .vertical-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    border-radius: 10px;
    background: var(--accent-dim);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .vertical-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--accent);
  }

  .vertical-card h3 {
    margin-bottom: 1rem;
  }

  .vertical-card p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    font-size: 0.95rem;
  }

  .vertical-card p:last-child {
    margin-bottom: 0;
  }

  .stat-highlight {
    color: var(--accent);
    font-weight: 600;
  }

  /* ── CASE STUDY ── */
  .case-study {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 3rem;
  }

  .case-study-header {
    margin-bottom: 2rem;
  }

  .case-study-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin: 1.5rem 0 2rem;
  }

  .cs-logo {
    height: 48px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.75;
    transition: opacity 0.2s;
  }

  .cs-logo:hover {
    opacity: 1;
  }

  .cs-logo-divider {
    display: block;
    width: 1px;
    height: 36px;
    background: var(--border);
  }

  .case-study-intro {
    color: var(--text-muted);
    margin-bottom: 2rem;
    font-size: 0.95rem;
  }

  blockquote {
    border-left: 3px solid var(--accent);
    padding: 1.5rem 0 1.5rem 1.5rem;
    margin: 2rem 0;
    font-style: italic;
    color: var(--text);
    font-size: 1.05rem;
    line-height: 1.7;
  }

  blockquote cite {
    display: block;
    margin-top: 0.75rem;
    font-style: normal;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 500;
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1.5rem;
    margin: 2.5rem 0;
  }

  .stat-card {
    text-align: center;
    padding: 1.5rem 1rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface-raised);
  }

  .stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.02em;
    line-height: 1;
    margin-bottom: 0.5rem;
  }

  .stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.4;
  }

  .deployed-list {
    list-style: none;
    padding: 0;
    margin-top: 2rem;
  }

  .deployed-list li {
    padding: 0.6rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-muted);
    font-size: 0.9rem;
  }

  .deployed-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent);
  }

  .deployed-list li strong {
    color: var(--text);
  }

  .case-study-footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    font-size: 0.85rem;
    color: var(--text-dim);
  }

  /* ── ABOUT ── */
  .about p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
  }

  .about p:last-of-type {
    margin-bottom: 0;
  }

  .about a {
    color: var(--accent);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
  }

  .about a:hover {
    border-bottom-color: var(--accent);
  }

  .credentials {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    flex-wrap: wrap;
  }

  .credential {
    flex: 1;
    min-width: 200px;
    padding: 1.25rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
  }

  .credential-number {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--accent);
    line-height: 1;
    margin-bottom: 0.4rem;
  }

  .credential-label {
    font-size: 0.8rem;
    color: var(--text-muted);
  }

  /* ── CLIENT LOGOS ── */
  .client-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 2.5rem;
    padding: 1.25rem 0;
    border-top: 1px solid var(--border);
  }

  .client-logos-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    width: 100%;
    text-align: center;
    margin-bottom: 0.25rem;
  }

  .client-logos span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.05em;
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: all 0.2s;
  }

  .client-logos span:hover {
    color: var(--text-muted);
    border-color: var(--border-accent);
  }

  /* ── CONTACT ── */
  .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
  }

  .contact-card {
    padding: 2rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
    transition: border-color 0.3s;
  }

  .contact-card:hover {
    border-color: var(--border-accent);
  }

  .contact-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
  }

  .contact-card p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.25rem;
  }

  .contact-card a.contact-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--accent);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: opacity 0.2s;
  }

  .contact-card a.contact-link:hover {
    opacity: 0.8;
  }

  .contact-card {
    display: flex;
    flex-direction: column;
  }

  .contact-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: auto;
    padding-top: 1rem;
  }

  .card-logo {
    height: 24px;
    opacity: 0.6;
    transition: opacity 0.2s;
  }

  .card-logo:hover {
    opacity: 1;
  }

  /* ── CONTACT FORM ── */
  .contact-form-section {
    margin-top: 3rem;
    /* padding: 2.5rem; */
    /* border: 1px solid var(--border); */
    /* border-radius: 12px; */
    /* background: var(--surface); */
  }

  .contact-form-section h3 {
    margin-bottom: 0.5rem;
  }

  .contact-form-section > p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 2rem;
  }

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

  .form-field {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
  }

  .form-field.full-width {
    grid-column: 1 / -1;
  }

  .form-field label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .form-field input,
  .form-field select,
  .form-field textarea {
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.7rem 1rem;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.9rem;
    transition: border-color 0.2s;
    outline: none;
  }

  .form-field input:focus,
  .form-field select:focus,
  .form-field textarea:focus {
    border-color: var(--accent);
  }

  .form-field textarea {
    resize: vertical;
    min-height: 100px;
  }

  .form-field select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
  }

  .form-field select option {
    background: var(--surface-raised);
    color: var(--text);
  }

  .form-submit {
    grid-column: 1 / -1;
    display: flex;
    justify-content: flex-start;
    margin-top: 0.5rem;
  }

  .form-submit button {
    background: var(--accent);
    color: var(--white);
    border: none;
    border-radius: 6px;
    padding: 0.75rem 2rem;
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
  }

  .form-submit button:hover {
    background: #3a7aee;
    transform: translateY(-1px);
  }

  .form-submit button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
  }

  .form-success {
    display: none;
    text-align: center;
    padding: 2rem;
  }

  .form-success svg {
    width: 48px;
    height: 48px;
    stroke: var(--success);
    margin-bottom: 1rem;
  }

  .form-success h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
  }

  .form-success p {
    color: var(--text-muted);
    font-size: 0.9rem;
  }

  /* ── FOOTER ── */
  footer {
    border-top: 1px solid var(--border);
    padding: 2.5rem 2rem;
    margin-top: var(--section-gap);
  }

  .footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .footer-left {
    font-size: 0.8rem;
    color: var(--text-dim);
  }

  .footer-links {
    display: flex;
    gap: 1.5rem;
  }

  .footer-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.2s;
  }

  .footer-links a:hover { color: var(--text-muted); }

  /* ── RESPONSIVE ── */
  @media (max-width: 768px) {
    :root { --section-gap: 4.5rem; }

    body { font-size: 16px; }

    section { padding: var(--section-gap) 1.25rem; }

    .nav-links { display: none; }
    .nav-links.open {
      display: flex;
      flex-direction: column;
      position: absolute;
      top: 60px;
      left: 0;
      right: 0;
      background: rgba(10, 10, 10, 0.95);
      backdrop-filter: blur(20px);
      border-bottom: 1px solid var(--border);
      padding: 1rem 2rem;
    }
    .nav-links.open a {
      margin-left: 0;
      padding: 0.5rem 0;
    }
    .mobile-toggle { display: block; }

    .hero { padding-top: calc(60px + 3rem); }

    .contact-grid { grid-template-columns: 1fr; }

    .stats-grid { grid-template-columns: repeat(2, 1fr); }

    .case-study { padding: 2rem 1.5rem; }

    .vertical-card { padding: 2rem 1.5rem; }

    .footer-inner {
      flex-direction: column;
      gap: 1rem;
      text-align: center;
    }

    .credentials { flex-direction: column; }

    .form-grid { grid-template-columns: 1fr; }
  }

  /* ── ANIMATION ── */
  .fade-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }

  .fade-up.visible {
    opacity: 1;
    transform: translateY(0);
  }