:root {
      --bg:        #080a0e;
      --surface:   #0f1117;
      --border:    rgba(255,255,255,0.07);
      --border-lg: rgba(255,255,255,0.11);
      --text:      #e8eaf0;
      --muted:     rgba(232,234,240,0.42);
      --dim:       rgba(232,234,240,0.22);
      --accent:    #4ade80;       /* green — cost savings signal */
      --accent2:   #22d3ee;       /* cyan — AI/tech signal */
      --accent-glow: rgba(74,222,128,0.15);
      --radius:    14px;
      --font-display: 'Instrument Serif', Georgia, serif;
      --font-body:    'Geist', -apple-system, sans-serif;
    }

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

    html { scroll-behavior: smooth; }

    body {
      background: var(--bg);
      color: var(--text);
      font-family: var(--font-body);
      font-size: 15px;
      line-height: 1.6;
      overflow-x: hidden;
      -webkit-font-smoothing: antialiased;
    }

    /* ── Noise texture overlay ── */
    body::before {
      content: '';
      position: fixed;
      inset: 0;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
      pointer-events: none;
      z-index: 0;
      opacity: 0.6;
    }

    /* ── Ambient gradient blobs ── */
    .blob {
      position: fixed;
      border-radius: 50%;
      filter: blur(90px);
      pointer-events: none;
      z-index: 0;
    }
    .blob-1 {
      width: 600px; height: 500px;
      background: radial-gradient(circle, rgba(74,222,128,0.07) 0%, transparent 70%);
      top: -100px; left: -150px;
    }
    .blob-2 {
      width: 500px; height: 400px;
      background: radial-gradient(circle, rgba(34,211,238,0.06) 0%, transparent 70%);
      top: 40%; right: -120px;
    }
    .blob-3 {
      width: 400px; height: 300px;
      background: radial-gradient(circle, rgba(74,222,128,0.05) 0%, transparent 70%);
      bottom: 10%; left: 30%;
    }

    /* ── Layout ── */
    .container {
      max-width: 1080px;
      margin: 0 auto;
      padding: 0 24px;
      position: relative;
      z-index: 1;
    }

    /* ══════════════════════════════════════════
       NAV
    ══════════════════════════════════════════ */
    nav {
      position: fixed;
      top: 0; left: 0; right: 0;
      z-index: 100;
      backdrop-filter: blur(18px);
      -webkit-backdrop-filter: blur(18px);
      border-bottom: 1px solid var(--border);
      background: rgba(8,10,14,0.75);
    }
    .nav-inner {
      max-width: 1080px;
      margin: 0 auto;
      padding: 0 24px;
      height: 58px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .nav-logo {
      display: flex;
      align-items: center;
      gap: 9px;
      text-decoration: none;
    }
    .nav-logo-mark {
      width: 28px; height: 28px;
      background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
      border-radius: 8px;
      display: flex; align-items: center; justify-content: center;
    }
    .nav-logo-mark svg { display: block; }
    .nav-logo-text {
      font-family: var(--font-display);
      font-size: 18px;
      color: var(--text);
      /* letter-spacing: -0.2px; */
    }
    .nav-links {
      display: flex;
      align-items: center;
      gap: 6px;
      list-style: none;
    }
    .nav-links a {
      color: var(--muted);
      text-decoration: none;
      font-size: 13.5px;
      padding: 6px 12px;
      border-radius: 8px;
      transition: color 0.15s, background 0.15s;
    }
    .nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.04); }
    .nav-links .nav-pricing {
      color: var(--dim);
      cursor: not-allowed;
      pointer-events: none;
      opacity: 0.5;
    }
    .nav-cta {
      background: var(--accent);
      color: #060a07 !important;
      font-weight: 500;
      padding: 7px 16px !important;
      border-radius: 9px !important;
      font-size: 13px !important;
      transition: filter 0.15s !important;
    }
    .nav-cta:hover { filter: brightness(1.08); background: var(--accent) !important; }

    /* ══════════════════════════════════════════
       HERO
    ══════════════════════════════════════════ */
    .hero {
      padding: 148px 0 100px;
      text-align: center;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 7px;
      padding: 5px 13px 5px 9px;
      border: 1px solid rgba(74,222,128,0.25);
      border-radius: 100px;
      font-size: 12px;
      color: var(--accent);
      background: rgba(74,222,128,0.07);
      margin-bottom: 32px;
      animation: fadeUp 0.6s ease both;
    }
    .hero-badge-dot {
      width: 6px; height: 6px;
      border-radius: 50%;
      background: var(--accent);
      animation: pulse 2s ease infinite;
    }
    @keyframes pulse {
      0%, 100% { opacity: 1; transform: scale(1); }
      50% { opacity: 0.5; transform: scale(0.85); }
    }

    .hero h1 {
      font-family: var(--font-display);
      font-size: clamp(44px, 7vw, 76px);
      font-weight: 400;
      line-height: 1.08;
      letter-spacing: -1.5px;
      color: var(--text);
      max-width: 820px;
      margin: 0 auto 22px;
      animation: fadeUp 0.6s 0.1s ease both;
    }
    .hero h1 em {
      font-style: italic;
      color: var(--accent);
    }
    .hero-sub {
      font-size: 17px;
      color: var(--muted);
      max-width: 520px;
      margin: 0 auto 44px;
      line-height: 1.7;
      font-weight: 300;
      animation: fadeUp 0.6s 0.18s ease both;
    }

    /* Waitlist form */
    .waitlist-form {
      display: flex;
      align-items: center;
      gap: 8px;
      max-width: 420px;
      margin: 0 auto 16px;
      animation: fadeUp 0.6s 0.26s ease both;
    }
    .waitlist-input {
      flex: 1;
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border-lg);
      border-radius: 11px;
      padding: 11px 16px;
      font-size: 14px;
      color: var(--text);
      font-family: var(--font-body);
      outline: none;
      transition: border-color 0.2s, box-shadow 0.2s;
    }
    .waitlist-input::placeholder { color: var(--dim); }
    .waitlist-input:focus {
      border-color: rgba(74,222,128,0.35);
      box-shadow: 0 0 0 3px rgba(74,222,128,0.08);
    }
    .waitlist-btn {
      background: var(--accent);
      color: #060a07;
      border: none;
      border-radius: 11px;
      padding: 11px 20px;
      font-size: 14px;
      font-weight: 600;
      font-family: var(--font-body);
      cursor: pointer;
      transition: filter 0.15s, transform 0.1s;
      white-space: nowrap;
    }
    .waitlist-btn:hover { filter: brightness(1.08); }
    .waitlist-btn:active { transform: scale(0.97); }
    .waitlist-btn:disabled { opacity: 0.6; cursor: not-allowed; }

    .waitlist-note {
      font-size: 12px;
      color: var(--dim);
      animation: fadeUp 0.6s 0.32s ease both;
    }

    /* Success state */
    .waitlist-success {
      display: none;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--accent);
      background: rgba(74,222,128,0.08);
      border: 1px solid rgba(74,222,128,0.2);
      border-radius: 11px;
      padding: 11px 18px;
      max-width: 420px;
      margin: 0 auto 16px;
    }
    .waitlist-success.show { display: flex; }

    /* ── Hero visual: model routing diagram ── */
    .hero-visual {
      margin: 64px auto 0;
      max-width: 760px;
      animation: fadeUp 0.7s 0.38s ease both;
    }
    .diagram-card {
      background: var(--surface);
      border: 1px solid var(--border-lg);
      border-radius: 20px;
      padding: 28px 32px;
      position: relative;
      overflow: hidden;
    }
    .diagram-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(74,222,128,0.4), rgba(34,211,238,0.3), transparent);
    }
    .diagram-label {
      font-size: 11px;
      font-weight: 500;
      letter-spacing: 0.8px;
      text-transform: uppercase;
      color: var(--dim);
      margin-bottom: 22px;
      text-align: left;
    }
    .diagram-flow {
      display: grid;
      grid-template-columns: 1fr auto 1fr auto 1fr;
      align-items: center;
      gap: 12px;
    }
    .diagram-node {
      background: rgba(255,255,255,0.03);
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 14px 12px;
      text-align: center;
    }
    .diagram-node-icon {
      font-size: 20px;
      margin-bottom: 6px;
    }
    .diagram-node-label {
      font-size: 11px;
      color: var(--muted);
      font-weight: 500;
    }
    .diagram-node-tag {
      display: inline-block;
      margin-top: 6px;
      font-size: 10px;
      padding: 2px 7px;
      border-radius: 100px;
      font-weight: 500;
    }
    .tag-green { background: rgba(74,222,128,0.12); color: var(--accent); }
    .tag-cyan  { background: rgba(34,211,238,0.12); color: var(--accent2); }
    .tag-amber { background: rgba(251,191,36,0.12); color: #fbbf24; }

    .diagram-arrow {
      color: var(--dim);
      font-size: 18px;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 4px;
    }
    .diagram-arrow-line {
      width: 1px;
      height: 32px;
      background: linear-gradient(to bottom, var(--border), var(--border-lg));
    }

    .diagram-bottom {
      margin-top: 20px;
      display: grid;
      grid-template-columns: 1fr 1fr 1fr;
      gap: 10px;
    }
    .diagram-result {
      background: rgba(74,222,128,0.04);
      border: 1px solid rgba(74,222,128,0.12);
      border-radius: 10px;
      padding: 12px 14px;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .diagram-result-label { font-size: 12px; color: var(--muted); }
    .diagram-result-value { font-size: 13px; font-weight: 500; color: var(--accent); }

    /* ══════════════════════════════════════════
       HOW IT WORKS
    ══════════════════════════════════════════ */
    .section {
      padding: 96px 0;
      position: relative;
      z-index: 1;
    }
    .section-eyebrow {
      font-size: 11.5px;
      font-weight: 500;
      letter-spacing: 1px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 14px;
    }
    .section-title {
      font-family: var(--font-display);
      font-size: clamp(30px, 4vw, 46px);
      font-weight: 400;
      letter-spacing: -0.8px;
      line-height: 1.12;
      color: var(--text);
      max-width: 560px;
      margin-bottom: 16px;
    }
    .section-sub {
      font-size: 15.5px;
      color: var(--muted);
      max-width: 480px;
      line-height: 1.7;
      font-weight: 300;
      margin-bottom: 56px;
    }

    .steps {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 20px;
    }
    .step-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 24px;
      position: relative;
      transition: border-color 0.2s, transform 0.2s;
    }
    .step-card:hover {
      border-color: var(--border-lg);
      transform: translateY(-2px);
    }
    .step-number {
      font-family: var(--font-display);
      font-size: 42px;
      font-style: italic;
      color: rgba(255,255,255,0.06);
      line-height: 1;
      margin-bottom: 16px;
    }
    .step-icon {
      width: 38px; height: 38px;
      border-radius: 10px;
      display: flex; align-items: center; justify-content: center;
      margin-bottom: 16px;
      font-size: 18px;
    }
    .step-icon-green { background: rgba(74,222,128,0.1); }
    .step-icon-cyan  { background: rgba(34,211,238,0.1); }
    .step-icon-amber { background: rgba(251,191,36,0.1); }
    .step-title {
      font-size: 15px;
      font-weight: 500;
      color: var(--text);
      margin-bottom: 8px;
    }
    .step-desc {
      font-size: 13.5px;
      color: var(--muted);
      line-height: 1.65;
    }

    /* ══════════════════════════════════════════
       WHO IT'S FOR
    ══════════════════════════════════════════ */
    .audience-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
    }
    .audience-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 26px 22px;
      transition: border-color 0.2s;
    }
    .audience-card:hover { border-color: var(--border-lg); }
    .audience-emoji { font-size: 28px; margin-bottom: 14px; }
    .audience-title {
      font-size: 14.5px;
      font-weight: 500;
      color: var(--text);
      margin-bottom: 8px;
    }
    .audience-desc {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.6;
    }
    .audience-tag {
      display: inline-block;
      margin-top: 14px;
      font-size: 11px;
      padding: 3px 9px;
      border-radius: 100px;
      background: rgba(74,222,128,0.08);
      color: var(--accent);
      font-weight: 500;
    }

    /* ══════════════════════════════════════════
       SAMPLE OUTPUT / DEMO MOCKUP
    ══════════════════════════════════════════ */
    .demo-split {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 40px;
      align-items: center;
    }
    .demo-text .section-title { max-width: 380px; }
    .demo-feature {
      display: flex;
      gap: 14px;
      margin-bottom: 22px;
    }
    .demo-feature-icon {
      width: 32px; height: 32px;
      border-radius: 8px;
      background: rgba(74,222,128,0.1);
      display: flex; align-items: center; justify-content: center;
      flex-shrink: 0;
      margin-top: 2px;
      font-size: 15px;
    }
    .demo-feature-title {
      font-size: 14px;
      font-weight: 500;
      color: var(--text);
      margin-bottom: 4px;
    }
    .demo-feature-desc {
      font-size: 13px;
      color: var(--muted);
      line-height: 1.6;
    }

    /* Mock chat output card */
    .mock-card {
      background: var(--surface);
      border: 1px solid var(--border-lg);
      border-radius: 18px;
      overflow: hidden;
      position: relative;
    }
    .mock-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(74,222,128,0.35), transparent);
    }
    .mock-topbar {
      padding: 12px 16px;
      border-bottom: 1px solid var(--border);
      display: flex;
      align-items: center;
      gap: 8px;
    }
    .mock-dot { width: 10px; height: 10px; border-radius: 50%; }
    .mock-title {
      font-size: 12px;
      color: var(--muted);
      margin-left: 6px;
    }
    .mock-body { padding: 20px; }
    .mock-prompt {
      background: rgba(255,255,255,0.04);
      border: 1px solid var(--border);
      border-radius: 10px;
      padding: 12px 14px;
      font-size: 12.5px;
      color: var(--muted);
      margin-bottom: 16px;
      line-height: 1.6;
    }
    .mock-prompt strong { color: var(--text); }

    .mock-response-label {
      font-size: 10px;
      font-weight: 500;
      letter-spacing: 0.6px;
      text-transform: uppercase;
      color: var(--accent);
      margin-bottom: 12px;
    }
    .mock-model-row {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 10px 12px;
      border-radius: 9px;
      margin-bottom: 6px;
      background: rgba(255,255,255,0.025);
      border: 1px solid var(--border);
    }
    .mock-model-left { display: flex; align-items: center; gap: 10px; }
    .mock-model-badge {
      font-size: 10px;
      font-weight: 600;
      padding: 2px 8px;
      border-radius: 6px;
      white-space: nowrap;
    }
    .mock-model-task { font-size: 12px; color: var(--muted); }
    .mock-model-cost { font-size: 12px; color: var(--accent); font-weight: 500; }

    .mock-total {
      margin-top: 14px;
      padding-top: 14px;
      border-top: 1px solid var(--border);
      display: flex;
      justify-content: space-between;
      align-items: center;
    }
    .mock-total-label { font-size: 12px; color: var(--muted); }
    .mock-total-saving {
      font-size: 11px;
      color: var(--accent);
      background: rgba(74,222,128,0.08);
      padding: 3px 9px;
      border-radius: 100px;
    }
    .mock-total-value { font-size: 16px; font-weight: 600; color: var(--text); }

    /* ══════════════════════════════════════════
       PRICING (greyed out / coming soon)
    ══════════════════════════════════════════ */
    #pricing {
      padding: 96px 0;
      position: relative;
      z-index: 1;
    }
    .pricing-coming {
      text-align: center;
      margin-bottom: 48px;
    }
    .pricing-soon-badge {
      display: inline-flex;
      align-items: center;
      gap: 6px;
      padding: 4px 12px;
      border: 1px solid var(--border);
      border-radius: 100px;
      font-size: 12px;
      color: var(--dim);
      background: rgba(255,255,255,0.02);
      margin-bottom: 14px;
    }
    .pricing-cards {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 16px;
      pointer-events: none;
      user-select: none;
      filter: grayscale(1);
      opacity: 0.3;
    }
    .pricing-card {
      background: var(--surface);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      padding: 28px 24px;
    }
    .pricing-tier { font-size: 12px; color: var(--muted); font-weight: 500; margin-bottom: 12px; }
    .pricing-price {
      font-family: var(--font-display);
      font-size: 38px;
      font-weight: 400;
      color: var(--text);
      margin-bottom: 4px;
    }
    .pricing-price span { font-size: 16px; }
    .pricing-desc { font-size: 12.5px; color: var(--muted); margin-bottom: 20px; }
    .pricing-divider { height: 1px; background: var(--border); margin-bottom: 18px; }
    .pricing-feature {
      display: flex; align-items: flex-start; gap: 8px;
      font-size: 13px; color: var(--muted);
      margin-bottom: 10px;
    }
    .pricing-check { color: var(--accent); font-size: 13px; flex-shrink: 0; margin-top: 1px; }
    .pricing-card-cta {
      display: block;
      text-align: center;
      margin-top: 22px;
      padding: 10px;
      border: 1px solid var(--border);
      border-radius: 9px;
      font-size: 13px;
      color: var(--muted);
    }
    .pricing-card.featured {
      border-color: rgba(74,222,128,0.3);
      background: rgba(74,222,128,0.03);
    }

    /* ══════════════════════════════════════════
       CTA SECTION
    ══════════════════════════════════════════ */
    .cta-section {
      padding: 96px 0 120px;
      text-align: center;
      position: relative;
      z-index: 1;
    }
    .cta-card {
      background: var(--surface);
      border: 1px solid var(--border-lg);
      border-radius: 24px;
      padding: 64px 40px;
      position: relative;
      overflow: hidden;
    }
    .cta-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(74,222,128,0.5), rgba(34,211,238,0.4), transparent);
    }
    .cta-card::after {
      content: '';
      position: absolute;
      bottom: -80px; left: 50%;
      transform: translateX(-50%);
      width: 400px; height: 200px;
      background: radial-gradient(ellipse, rgba(74,222,128,0.08) 0%, transparent 70%);
      pointer-events: none;
    }
    .cta-card h2 {
      font-family: var(--font-display);
      font-size: clamp(32px, 4vw, 50px);
      font-weight: 400;
      letter-spacing: -0.8px;
      margin-bottom: 14px;
    }
    .cta-card h2 em { font-style: italic; color: var(--accent); }
    .cta-card p {
      color: var(--muted);
      font-size: 16px;
      max-width: 400px;
      margin: 0 auto 36px;
      font-weight: 300;
      line-height: 1.7;
    }

    /* ══════════════════════════════════════════
       FOOTER
    ══════════════════════════════════════════ */
    footer {
      border-top: 1px solid var(--border);
      padding: 32px 0;
      position: relative;
      z-index: 1;
    }
    .footer-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .footer-logo {
      font-family: var(--font-display);
      font-size: 15px;
      color: var(--muted);
    }
    .footer-copy {
      font-size: 12.5px;
      color: var(--dim);
    }

    /* ══════════════════════════════════════════
       DIVIDER
    ══════════════════════════════════════════ */
    .section-divider {
      height: 1px;
      background: linear-gradient(90deg, transparent, var(--border-lg), transparent);
      position: relative;
      z-index: 1;
    }

    /* ══════════════════════════════════════════
       ANIMATIONS
    ══════════════════════════════════════════ */
    @keyframes fadeUp {
      from { opacity: 0; transform: translateY(18px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* Scroll reveal */
    .reveal {
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 0.55s ease, transform 0.55s ease;
    }
    .reveal.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .reveal-delay-1 { transition-delay: 0.08s; }
    .reveal-delay-2 { transition-delay: 0.16s; }
    .reveal-delay-3 { transition-delay: 0.24s; }

    /* ══════════════════════════════════════════
       RESPONSIVE
    ══════════════════════════════════════════ */
    @media (max-width: 768px) {
      .nav-links { display: none; }
      .steps, .audience-grid, .pricing-cards { grid-template-columns: 1fr; }
      .demo-split { grid-template-columns: 1fr; }
      .diagram-flow { grid-template-columns: 1fr; gap: 8px; }
      .diagram-bottom { grid-template-columns: 1fr; }
      .diagram-arrow { display: none; }
      .hero h1 { letter-spacing: -0.8px; }
      .waitlist-form { flex-direction: column; }
      .waitlist-input, .waitlist-btn { width: 100%; }
      .footer-inner { flex-direction: column; gap: 8px; text-align: center; }
    }