:root {
    --green: #1E5A43;
    --green-hover: #256B50;
    --green-tint: #EAF3E6;
    --amber: #B87A14;
    --critical: #B33A3A;
    --surface: #F7F7F5;
    --text: #1A1A18;
    --text-secondary: #6B6B68;
    --border: #E5E5E0;
    --sans: 'DM Sans', sans-serif;
    --serif: 'Spectral', serif;
  }

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

  html { scroll-behavior: smooth; }

  body {
    font-family: var(--sans);
    color: var(--text);
    background: #FFFFFF;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
  }

  a { color: inherit; text-decoration: none; }

  img, svg { display: block; max-width: 100%; }

  .wrap {
    max-width: 1160px;
    margin: 0 auto;
    padding: 0 32px;
  }

  @media (max-width: 640px) {
    .wrap { padding: 0 20px; }
  }

  /* focus visibility */
  a:focus-visible, button:focus-visible {
    outline: 2px solid var(--green);
    outline-offset: 3px;
  }

  @media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    * { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  }

  /* ---------- Nav ---------- */
  header.site-nav {
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(6px);
    z-index: 40;
  }

  .site-nav .wrap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
  }

  .logotype {
    font-weight: 700;
    font-size: 19px;
    letter-spacing: -0.01em;
    color: var(--green);
  }

  nav.primary-links {
    display: flex;
    gap: 36px;
  }

  nav.primary-links a {
    font-size: 14.5px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: color 0.15s ease;
  }

  nav.primary-links a:hover { color: var(--text); }

  .nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 20px;
    background: var(--green);
    color: #fff;
    font-weight: 500;
    font-size: 14.5px;
    border-radius: 3px;
    transition: background 0.15s ease;
  }

  .nav-cta:hover { background: var(--green-hover); }

  .nav-menu-toggle { display: none; }

  @media (max-width: 860px) {
    nav.primary-links { display: none; }
  }

  /* ---------- Hero ---------- */
  section.hero {
    padding: 88px 0 96px;
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 64px;
    align-items: start;
  }

  @media (max-width: 900px) {
    .hero-grid { grid-template-columns: 1fr; gap: 56px; }
  }

  .hero-copy h1 {
    font-size: clamp(34px, 4.6vw, 52px);
    line-height: 1.08;
    font-weight: 700;
    letter-spacing: -0.015em;
    max-width: 15ch;
  }

  .hero-anchor {
    margin-top: 24px;
    font-size: 18px;
    line-height: 1.55;
    color: var(--text-secondary);
    max-width: 46ch;
  }

  .hero-actions {
    margin-top: 36px;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    padding: 14px 26px;
    background: var(--green);
    color: #fff;
    font-weight: 500;
    font-size: 15.5px;
    border-radius: 3px;
    transition: background 0.15s ease;
  }

  .btn-primary:hover { background: var(--green-hover); }

  .btn-secondary {
    font-weight: 500;
    font-size: 15.5px;
    color: var(--text);
    border-bottom: 1px solid var(--border);
    padding-bottom: 2px;
    transition: border-color 0.15s ease;
  }

  .btn-secondary:hover { border-color: var(--text); }

  .hero-stats {
    margin-top: 64px;
    display: flex;
    gap: 48px;
    flex-wrap: wrap;
  }

  .hero-stat .stat-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--green);
    letter-spacing: -0.01em;
  }

  .hero-stat .stat-label {
    margin-top: 4px;
    font-size: 13.5px;
    color: var(--text-secondary);
    max-width: 16ch;
    line-height: 1.4;
  }

  .hero-credibility {
    margin-top: 56px;
    padding-top: 28px;
    border-top: 1px solid var(--border);
    max-width: 44ch;
  }

  .hero-credibility p {
    font-size: 15px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .email-fallback {
    margin-top: 14px;
    font-size: 14px;
    color: var(--text-secondary);
  }

  .email-fallback a {
    color: var(--green);
    border-bottom: 1px solid var(--border);
  }

  .email-fallback a:hover { border-color: var(--green); }

  .email-fallback.light {
    color: rgba(255,255,255,0.75);
  }

  .email-fallback.light a {
    color: #fff;
    border-bottom-color: rgba(255,255,255,0.4);
  }

  .mockup-intro {
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 12px;
  }

  /* ---------- Hero mockup: live finding ---------- */
  .finding-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  .finding-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 24px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
  }

  .finding-card-head .label {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-secondary);
  }

  .live-dot {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12.5px;
    font-weight: 500;
    color: var(--green);
  }

  .live-dot::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--green);
  }

  .finding-body {
    padding: 28px 24px 26px;
    border-left: 3px solid var(--green);
  }

  .finding-tag {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 10px;
  }

  .finding-headline {
    font-size: 19px;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.005em;
  }

  .diagnosis-block {
    padding: 22px 24px;
    background: var(--surface);
  }

  .diagnosis-block p {
    font-family: var(--serif);
    font-size: 15.5px;
    line-height: 1.65;
    color: var(--text);
  }

  .recommendation-block {
    padding: 20px 24px 24px;
    border-top: 1px solid var(--border);
  }

  .recommendation-label {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--amber);
  }

  .recommendation-block p {
    margin-top: 8px;
    font-size: 15px;
    line-height: 1.55;
  }

  .recommendation-block .impact {
    margin-top: 10px;
    font-size: 13.5px;
    color: var(--text-secondary);
  }

  .recommendation-block .impact strong {
    color: var(--text);
    font-weight: 500;
  }

  /* placeholder sections (to be built next) */
  .stub {
    padding: 120px 0;
    border-top: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 14px;
  }

  /* ---------- The Problem ---------- */
  section.problem {
    padding: 108px 0;
    border-top: 1px solid var(--border);
    background: var(--surface);
  }

  .problem-head {
    max-width: 42ch;
  }

  .problem-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
  }

  .problem-head p {
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .problem-list {
    margin-top: 56px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
  }

  @media (max-width: 860px) {
    .problem-list { grid-template-columns: 1fr; }
  }

  .problem-item {
    background: #fff;
    padding: 32px 28px;
    border-left: 3px solid var(--green);
  }

  .problem-item h3 {
    font-size: 17px;
    font-weight: 700;
    line-height: 1.35;
    letter-spacing: -0.005em;
  }

  .problem-item p {
    margin-top: 12px;
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .problem-compare {
    margin-top: 80px;
  }

  .problem-compare-label {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 24px;
  }

  .compare-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  @media (max-width: 760px) {
    .compare-grid { grid-template-columns: 1fr; }
  }

  .compare-card {
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 4px;
    padding: 26px 26px 28px;
  }

  .compare-card .tag {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-secondary);
  }

  .compare-card.after .tag { color: var(--green); }

  .compare-card p {
    margin-top: 14px;
    font-family: var(--serif);
    font-size: 16px;
    line-height: 1.6;
    color: var(--text);
  }

  .compare-card.after {
    border-left: 3px solid var(--green);
  }

  /* ---------- How It Works ---------- */
  section.how-it-works {
    padding: 108px 0;
  }

  .hiw-head {
    max-width: 46ch;
  }

  .hiw-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
  }

  .hiw-head p {
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .hiw-steps {
    margin-top: 64px;
    position: relative;
  }

  .hiw-step {
    display: grid;
    grid-template-columns: 64px 1fr;
    gap: 28px;
    padding: 36px 0;
    border-top: 1px solid var(--border);
  }

  .hiw-step:last-child {
    border-bottom: 1px solid var(--border);
  }

  .hiw-step-num {
    font-family: var(--serif);
    font-size: 34px;
    font-weight: 400;
    color: var(--green);
    line-height: 1;
    padding-top: 4px;
  }

  .hiw-step-content h3 {
    font-size: 19px;
    font-weight: 700;
    letter-spacing: -0.005em;
  }

  .hiw-step-content p {
    margin-top: 10px;
    font-size: 15.5px;
    line-height: 1.65;
    color: var(--text-secondary);
    max-width: 62ch;
  }

  .hiw-step-example {
    margin-top: 14px;
    padding-left: 16px;
    border-left: 2px solid var(--border);
    font-family: var(--serif);
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--text);
  }

  @media (max-width: 640px) {
    .hiw-step { grid-template-columns: 40px 1fr; gap: 18px; }
    .hiw-step-num { font-size: 26px; }
  }

  /* ---------- The Framework ---------- */
  section.framework {
    padding: 108px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
  }

  .fw-head {
    max-width: 48ch;
  }

  .fw-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
  }

  .fw-head p {
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .fw-grid {
    margin-top: 56px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
  }

  @media (max-width: 760px) {
    .fw-grid { grid-template-columns: 1fr; }
  }

  .fw-item {
    background: #fff;
    padding: 28px 30px;
    border-left: 3px solid var(--green);
  }

  .fw-item .fw-name {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 10px;
  }

  .fw-item .fw-question {
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.45;
    color: var(--text);
  }

  .fw-note {
    margin-top: 40px;
    font-size: 14.5px;
    color: var(--text-secondary);
    max-width: 60ch;
    line-height: 1.6;
  }

  /* ---------- Our Story ---------- */
  section.story {
    padding: 108px 0;
  }

  .story-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
    max-width: 20ch;
  }

  .story-body {
    margin-top: 40px;
    max-width: 68ch;
  }

  .story-body p {
    font-family: var(--serif);
    font-size: 17px;
    line-height: 1.7;
    color: var(--text);
  }

  .story-body p + p {
    margin-top: 22px;
  }

  .story-pullquote {
    margin-top: 44px;
    max-width: 56ch;
    padding-left: 20px;
    border-left: 3px solid var(--green);
  }

  .story-pullquote p {
    font-family: var(--serif);
    font-style: italic;
    font-size: 20px;
    line-height: 1.5;
    color: var(--green);
  }

  .story-stats {
    margin-top: 64px;
    display: flex;
    gap: 56px;
    flex-wrap: wrap;
    padding-top: 40px;
    border-top: 1px solid var(--border);
  }

  .story-stat .stat-value {
    font-size: 26px;
    font-weight: 700;
    color: var(--green);
    letter-spacing: -0.01em;
  }

  .story-stat .stat-label {
    margin-top: 4px;
    font-size: 13.5px;
    color: var(--text-secondary);
    max-width: 20ch;
    line-height: 1.4;
  }

  /* ---------- Competitive Landscape ---------- */
  section.competitive {
    padding: 108px 0;
    border-top: 1px solid var(--border);
  }

  .comp-head {
    max-width: 50ch;
  }

  .comp-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
  }

  .comp-head p {
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .comp-table-wrap {
    margin-top: 52px;
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
  }

  table.comp-table {
    width: 100%;
    border-collapse: collapse;
  }

  .comp-table th, .comp-table td {
    padding: 18px 24px;
    text-align: left;
    font-size: 14.5px;
    border-bottom: 1px solid var(--border);
  }

  .comp-table th {
    font-weight: 700;
    font-size: 13.5px;
    background: var(--surface);
  }

  .comp-table th:first-child, .comp-table td:first-child {
    color: var(--text-secondary);
    font-weight: 500;
  }

  .comp-table tr:last-child td { border-bottom: none; }

  .comp-table td.no { color: var(--text-secondary); }

  .comp-table td.yes {
    color: var(--green);
    font-weight: 500;
    border-left: 3px solid var(--green);
  }

  .comp-table th.yes-col { border-left: 3px solid var(--green); }

  .comp-note {
    margin-top: 22px;
    font-size: 14px;
    color: var(--text-secondary);
    max-width: 60ch;
    line-height: 1.6;
  }

  @media (max-width: 700px) {
    .comp-table th, .comp-table td { padding: 14px 14px; font-size: 13.5px; }
  }

  /* ---------- Founding Customer Opportunity ---------- */
  section.founding {
    padding: 108px 0;
    background: var(--surface);
    border-top: 1px solid var(--border);
  }

  .found-head {
    max-width: 52ch;
  }

  .found-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
  }

  .found-head p {
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .found-columns {
    margin-top: 56px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  @media (max-width: 780px) {
    .found-columns { grid-template-columns: 1fr; gap: 40px; }
  }

  .found-col-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
  }

  .found-item {
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    border-left: 3px solid var(--green);
    padding-left: 18px;
  }

  .found-item:last-child { border-bottom: none; }

  .found-item h4 {
    font-size: 15.5px;
    font-weight: 700;
  }

  .found-item p {
    margin-top: 6px;
    font-size: 14.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .found-scarcity {
    margin-top: 64px;
    padding-top: 40px;
    border-top: 1px solid var(--border);
    max-width: 62ch;
  }

  .found-scarcity h3 {
    font-family: var(--serif);
    font-size: 24px;
    font-weight: 500;
    color: var(--green);
  }

  .found-scarcity p {
    margin-top: 14px;
    font-size: 15.5px;
    line-height: 1.65;
    color: var(--text-secondary);
  }

  .found-cta {
    margin-top: 40px;
    display: flex;
    align-items: center;
    gap: 24px;
    flex-wrap: wrap;
  }

  .found-cta .note {
    font-size: 13.5px;
    color: var(--text-secondary);
    max-width: 34ch;
  }

  /* ---------- Founding form ---------- */
  .found-form {
    margin-top: 8px;
    max-width: 520px;
  }

  .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  @media (max-width: 480px) {
    .form-row { grid-template-columns: 1fr; }
  }

  .form-field {
    margin-bottom: 20px;
  }

  .form-field label {
    display: block;
    font-size: 13.5px;
    font-weight: 500;
    color: var(--text);
    margin-bottom: 8px;
  }

  .form-field input,
  .form-field textarea {
    width: 100%;
    font-family: var(--sans);
    font-size: 15px;
    color: var(--text);
    background: #fff;
    border: 1px solid var(--border);
    border-radius: 3px;
    padding: 11px 14px;
    resize: vertical;
  }

  .form-field input:focus,
  .form-field textarea:focus {
    outline: none;
    border-color: var(--green);
  }

  .found-form button.btn-primary {
    border: none;
    cursor: pointer;
    font-family: var(--sans);
  }

  .found-form-note {
    margin-top: 16px;
    font-size: 13px;
    color: var(--text-secondary);
    max-width: 44ch;
    line-height: 1.55;
  }

  .found-form-note a {
    color: var(--green);
  }

  /* ---------- Early Results ---------- */
  section.results {
    padding: 108px 0;
  }

  .results-head {
    max-width: 52ch;
  }

  .results-head h2 {
    font-size: clamp(28px, 3.4vw, 38px);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
  }

  .results-head p {
    margin-top: 18px;
    font-size: 16.5px;
    line-height: 1.6;
    color: var(--text-secondary);
  }

  .results-grid {
    margin-top: 56px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
  }

  @media (max-width: 900px) {
    .results-grid { grid-template-columns: 1fr; }
  }

  .result-card {
    border: 1px solid var(--border);
    border-left: 3px solid var(--green);
    border-radius: 4px;
    padding: 26px 24px 24px;
    display: flex;
    flex-direction: column;
  }

  .result-card .capability {
    font-size: 12.5px;
    font-weight: 500;
    color: var(--green);
  }

  .result-card .capability.roadmap {
    color: var(--amber);
  }

  .result-card .roadmap-tag {
    font-size: 11.5px;
    color: var(--text-secondary);
    margin-top: 2px;
  }

  .result-card p.scenario {
    margin-top: 14px;
    font-family: var(--serif);
    font-size: 15px;
    line-height: 1.62;
    color: var(--text);
    flex-grow: 1;
  }

  .result-card .impact-line {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--border);
    font-size: 13.5px;
    color: var(--text-secondary);
  }

  .result-card .impact-line strong {
    color: var(--text);
    font-weight: 500;
  }

  .results-disclosure {
    margin-top: 32px;
    font-size: 13px;
    color: var(--text-secondary);
    max-width: 66ch;
    line-height: 1.6;
  }

  /* ---------- Final CTA ---------- */
  section.final-cta {
    background: var(--green);
    color: #fff;
    padding: 100px 0;
    text-align: center;
  }

  .final-cta h2 {
    font-family: var(--serif);
    font-weight: 500;
    font-style: italic;
    font-size: clamp(26px, 3.6vw, 36px);
    max-width: 22ch;
    margin: 0 auto;
    line-height: 1.3;
  }

  .final-cta p {
    margin-top: 20px;
    font-size: 16.5px;
    color: rgba(255,255,255,0.82);
    max-width: 46ch;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
  }

  .final-cta .btn-primary {
    margin-top: 32px;
    background: #fff;
    color: var(--green);
  }

  .final-cta .btn-primary:hover {
    background: rgba(255,255,255,0.9);
  }

  /* ---------- Footer ---------- */
  footer.site-footer {
    padding: 72px 0 40px;
    border-top: 1px solid var(--border);
  }

  .footer-top {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
  }

  @media (max-width: 760px) {
    .footer-top { grid-template-columns: 1fr 1fr; }
  }

  .footer-brand .logotype { display: inline-block; }

  .footer-brand p {
    margin-top: 14px;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text-secondary);
    max-width: 32ch;
  }

  .footer-col h5 {
    font-size: 13px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 14px;
  }

  .footer-col a {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 10px;
  }

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

  .footer-bottom {
    margin-top: 56px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    font-size: 13px;
    color: var(--text-secondary);
  }

  .footer-bottom .legal-links a {
    color: var(--text-secondary);
    margin-left: 20px;
  }

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

  /* ---------- Copy toast ---------- */
  #copy-toast {
    position: fixed;
    left: 50%;
    bottom: 28px;
    transform: translate(-50%, 12px);
    background: var(--text);
    color: #fff;
    font-size: 14px;
    font-weight: 500;
    padding: 12px 20px;
    border-radius: 4px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 100;
  }

  #copy-toast.visible {
    opacity: 1;
    transform: translate(-50%, 0);
  }