:root {
  /* Primitive Colors - Dark theme palette */
  --gray-0: #FFFFFF;
  --gray-100: #F3F4F6;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #2A2A2A;
  --gray-900: #1A1A1A;
  --gray-950: #0D0D0D;

  /* Brand - Mint green */
  --mint-400: #78D2AE;
  --mint-500: #78D2AE;
  --mint-600: #78D2AE;

  /* Underline accent - Light blue */
  --underline: #7DD3FC;

  /* Semantic Tokens - Dark theme default */
  --bg-app: var(--gray-900);
  --bg-surface: var(--gray-800);
  --bg-surface-muted: var(--gray-800);
  --bg-surface-hover: var(--gray-700);

  --line: var(--gray-700);
  --line-strong: var(--gray-600);

  --text-primary: var(--gray-0);
  --text-secondary: var(--gray-400);
  --text-tertiary: var(--gray-500);

  --brand-primary: var(--mint-600);
  --brand-surface: rgba(120, 210, 174, 0.12);
  --brand-text: var(--mint-400);

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);

  --color-text: var(--text-primary);
  --color-subtle: var(--text-secondary);
  --color-muted: var(--text-secondary);
  --color-faint: var(--line);
  --color-bg: var(--bg-app);
  --color-panel: var(--bg-surface);
  --color-accent: var(--brand-primary);
  --color-accent-soft: var(--brand-surface);
  --color-success: var(--mint-500);
  --shadow-soft: var(--shadow-lg);
  --shadow-halo: 0 0 0 3px rgba(120, 210, 174, 0.35);

  /* Spacing - Responsive baseline */
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-24: 24px;
  --space-32: 32px;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-card: 12px;
  --radius-lg: 16px;
  --radius-pill: 999px;

  /* Typography */
  --font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Josefin Sans', var(--font-family);
  --font-h4: 24px;
  --font-title: 18px;
  --font-body: 15px;
  --font-meta: 13px;
  --font-caption: 12px;

  --weight-title: 600;
  --weight-body: 400;
  --weight-button: 500;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;

  /* Layout */
  --max-width: 680px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font-family);
  color: var(--text-primary);
  background: var(--bg-app);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
}

h1, h2, h3, .site-logo {
  font-family: var(--font-heading);
}

.page {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-32) var(--space-24) 96px;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-24);
  padding: var(--space-16) 0 var(--space-32);
}

.site-logo {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-8);
  font-weight: 700;
  font-size: 28px;
  color: var(--text-primary);
  text-decoration: none;
}

.site-logo img,
.site-logo svg {
  width: 48px;
  height: 48px;
  color: var(--brand-primary);
}

.site-header .site-logo {
  flex-direction: row;
  align-items: center;
  gap: var(--space-12);
  font-size: 22px;
}

.site-header .site-logo img,
.site-header .site-logo svg {
  width: 32px;
  height: 32px;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 20px;
}

.site-nav a {
  font-size: var(--font-body);
  font-weight: var(--weight-button);
  color: var(--text-secondary);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a:focus {
  color: var(--text-primary);
}

.site-nav .nav-waitlist {
  padding: 10px var(--space-16);
  border-radius: var(--radius-pill);
  background: var(--brand-primary);
  color: var(--gray-900);
  font-weight: 600;
}

.hero {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 48px 0 64px;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: var(--font-meta);
  font-weight: var(--weight-title);
  color: var(--brand-primary);
  margin-bottom: var(--space-12);
}

.hero h1 {
  font-size: 42px;
  line-height: 1.2;
  margin: 0 0 16px;
}

.hero .lede {
  font-size: var(--font-title);
  color: var(--text-secondary);
  margin: 0;
}

.hero-benefits {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  gap: 12px;
}

.hero-benefits li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-12);
  font-size: var(--font-body);
  color: var(--text-secondary);
}

.hero-benefits li svg {
  flex-shrink: 0;
  margin-top: 4px;
  color: #16A34A;
}

.hero-cta {
  display: inline-flex;
  flex-direction: column;
  gap: 10px;
}

.hero-signup {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-12);
  margin-top: 32px;
}

.hero-signup .helper {
  text-align: center;
  max-width: 380px;
}

.signup-row {
  display: flex;
  gap: var(--space-12);
  flex-wrap: wrap;
  justify-content: center;
}

.signup-row input {
  flex: 1;
  min-width: 220px;
  max-width: 320px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.cta,
button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  background: var(--brand-primary);
  color: var(--gray-900);
  border: none;
  border-radius: var(--radius-pill);
  padding: 16px 32px;
  font-weight: 700;
  font-size: var(--font-body);
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition-fast), filter var(--transition-fast);
}

.cta:hover,
button:hover {
  transform: translateY(-1px);
  filter: brightness(1.08);
}

.cta.is-ghost {
  background: transparent;
  color: var(--brand-primary);
  border: 1px solid var(--brand-primary);
}

.cta.is-ghost:hover {
  background: var(--brand-surface);
  filter: none;
}

.cta:focus,
button:focus,
input:focus,
textarea:focus,
.site-nav .nav-waitlist:focus {
  outline: none;
  box-shadow: var(--shadow-halo);
}

.helper {
  font-size: var(--font-meta);
  color: var(--text-secondary);
}


.section-intro {
  margin: 64px 0 0;
  display: grid;
  gap: 20px;
}

.section-intro h2 {
  font-size: 28px;
  line-height: 1.25;
  margin: 0;
}

.section-intro p {
  font-size: var(--font-body);
  color: var(--text-primary);
  margin: 0;
  line-height: 1.7;
}

.section-intro .u {
  text-decoration: underline;
  text-decoration-color: var(--underline);
  text-underline-offset: 4px;
}

.section-intro code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.9em;
  background: var(--bg-surface);
  color: var(--text-primary);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
}

.panel {
  margin-top: 64px;
}

.panel h2 {
  font-size: 28px;
  margin: 0 0 20px;
}

.panel p {
  font-size: var(--font-body);
  color: var(--text-primary);
  margin: 0;
  line-height: 1.7;
}

.about-row {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: start;
  margin-top: 24px;
}

.about-row .profile-img {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--line);
}

/* Reveal-on-scroll primitives */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}


.artifact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
}

.artifact-card {
  position: relative;
  border: 1px solid rgba(148, 163, 184, 0.24);
  border-radius: var(--radius-md);
  padding: 24px;
  display: grid;
  gap: 16px;
  text-decoration: none;
  background: linear-gradient(180deg, #fff 0%, rgba(248, 250, 252, 0.9) 100%);
  transition: transform 160ms ease, border 160ms ease, box-shadow 160ms ease;
  cursor: pointer;
}

.artifact-card:hover,
.artifact-card:focus {
  transform: translateY(-4px);
  border-color: rgba(37, 99, 235, 0.45);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
}

.artifact-card img {
  width: 100%;
  height: 140px;
  object-fit: cover;
  border-radius: var(--radius-card);
  border: 1px solid var(--line);
  background: var(--bg-app);
}

.artifact-card h3 {
  margin: 0;
  font-size: 20px;
}

.artifact-card p {
  margin: 0;
  font-size: var(--font-body);
  color: var(--text-secondary);
}

.artifact-card .microcopy {
  font-size: var(--font-meta);
  color: var(--brand-primary);
  font-weight: var(--weight-title);
}

.proof-panel {
  display: grid;
  gap: 24px;
}

.proof-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
}

.proof-card {
  border-radius: var(--radius-md);
  background: rgba(37, 99, 235, 0.08);
  padding: 20px;
}

.proof-card strong {
  display: block;
  font-size: 30px;
  line-height: 1.2;
}

.quote-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--line-strong);
  padding: var(--space-24);
  font-size: var(--font-body);
  color: var(--text-secondary);
  background: var(--bg-surface);
}

.quote-card footer {
  margin-top: var(--space-16);
  font-weight: var(--weight-title);
  color: var(--text-primary);
}

.steps {
  display: grid;
  gap: 28px;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.step-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: var(--space-24);
  display: grid;
  gap: var(--space-12);
  background: var(--bg-surface-muted);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--brand-surface);
  color: var(--brand-primary);
  font-weight: var(--weight-title);
}

.example-block {
  background: #0F172A;
  color: #F8FAFC;
  border-radius: var(--radius-md);
  padding: 24px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', 'SFMono-Regular', Menlo, Monaco, Consolas,
    'Liberation Mono', 'Courier New', monospace;
  font-size: 15px;
  line-height: 1.65;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.button-row button {
  min-width: 160px;
}

.button-row .download-link {
  background: var(--bg-surface-muted);
  color: var(--text-primary);
  border: 1px solid var(--line);
  box-shadow: none;
}

.privacy-grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.info-card {
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  padding: var(--space-24);
  background: var(--bg-surface);
  display: grid;
  gap: var(--space-12);
}

.info-card h3 {
  margin: 0;
  font-size: 20px;
}

.info-card p,
.info-card ul {
  margin: 0;
  color: var(--text-secondary);
  font-size: var(--font-body);
}

.info-card ul {
  padding-left: 18px;
  display: grid;
  gap: 6px;
}

.waitlist {
  margin-top: 80px;
  display: grid;
  gap: var(--space-24);
  justify-items: start;
}

.waitlist-actions {
  display: flex;
  gap: var(--space-12);
}

.waitlist form {
  display: grid;
  gap: 12px;
  max-width: 420px;
  width: 100%;
}

label {
  font-weight: var(--weight-title);
  color: var(--text-primary);
}

input[type="email"],
input[type="text"] {
  width: 100%;
  padding: 14px var(--space-16);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-pill);
  font-size: var(--font-body);
  color: var(--text-primary);
  background: var(--bg-surface);
}

input::placeholder {
  color: var(--text-tertiary);
}

.waitlist button {
  width: fit-content;
}

.final-cta {
  display: grid;
  gap: 12px;
}

.footer {
  margin-top: 96px;
  padding: var(--space-32) 0 0;
  border-top: 1px solid var(--line);
  color: var(--text-secondary);
  font-size: var(--font-meta);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-16);
  justify-content: space-between;
}

.footer nav {
  display: flex;
  gap: 16px;
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--weight-button);
}

.footer a:hover,
.footer a:focus {
  color: var(--text-primary);
}

@media (max-width: 768px) {
  .page {
    padding: var(--space-24) 18px 64px;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-16);
  }

  .site-nav {
    flex-wrap: wrap;
    gap: var(--space-12);
  }

  .hero {
    padding: var(--space-32) var(--space-24);
  }

  .hero h1 {
    font-size: 32px;
  }

  .about-row {
    grid-template-columns: 1fr;
  }

  .section-intro {
    margin: 64px 0 var(--space-24);
  }

  .panel {
    padding: 28px;
  }

  .footer {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-12);
  }
}