:root {
  /* Product-specific colors - purple for innovation/dev tools */
  --color-primary: #7c3aed;
  --color-primary-hover: #6d28d9;
  --color-primary-light: #ede9fe;
  --color-primary-faint: #f5f3ff;

  /* Shared neutrals */
  --color-bg: #ffffff;
  --color-text: #111827;
  --color-text-muted: #4b5563;
  --color-text-faint: #8a919d;
  --color-surface: #f9fafb;
  --color-border: #e5e7eb;
  --color-border-strong: #d1d5db;
  --color-success: #15803d;
  --color-success-light: #dcfce7;
  --color-warning: #9a5400;
  --color-warning-light: #fef3c7;
  --color-error: #b91c1c;
  --color-error-light: #fee2e2;
  --color-btn-text: #ffffff;

  /* Layout */
  --max-width: 800px;
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-2xl: 4rem;
  --section-gap: clamp(3rem, 6vw, 5rem);

  /* Border radius */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Layered shadows for realism */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-sm:
    0 1px 2px rgba(0, 0, 0, 0.06),
    0 1px 3px rgba(0, 0, 0, 0.04);
  --shadow-md:
    0 2px 4px rgba(0, 0, 0, 0.04),
    0 4px 8px rgba(0, 0, 0, 0.06),
    0 8px 16px rgba(0, 0, 0, 0.04);
  --shadow-lg:
    0 2px 4px rgba(0, 0, 0, 0.02),
    0 4px 8px rgba(0, 0, 0, 0.04),
    0 12px 24px rgba(0, 0, 0, 0.06),
    0 24px 48px rgba(0, 0, 0, 0.04);
  --shadow-primary:
    0 2px 4px rgba(124, 58, 237, 0.06),
    0 4px 8px rgba(124, 58, 237, 0.08),
    0 12px 24px rgba(124, 58, 237, 0.06);

  /* CTA-specific */
  --cta-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
  --cta-shadow-hover: 0 6px 20px rgba(124, 58, 237, 0.45);

  /* Typography scale */
  --font-xs: 0.75rem;
  --font-sm: 0.85rem;
  --font-base: 1rem;
  --font-md: 1.05rem;
  --font-lg: 1.15rem;
  --font-xl: 1.25rem;

  /* Z-index scale */
  --z-below: -1;
  --z-base: 1;
  --z-tooltip: 10;
  --z-header: 50;
  --z-sticky-cta: 100;
  --z-skip-link: 200;

  /* Transition */
  --transition: 0.2s ease-out;

  /* Dark mode overlay colors */
  --header-bg: rgba(255, 255, 255, 0.85);
  --overlay-bg: rgba(255, 255, 255, 0.88);
  --sticky-bg: rgba(255, 255, 255, 0.97);
}

/* ===================== Dark mode ===================== */
[data-theme="dark"] {
  --color-primary: #a78bfa;
  --color-primary-hover: #8b5cf6;
  --color-primary-light: #1e1b4b;
  --color-primary-faint: #0f0e24;

  --color-bg: #0f172a;
  --color-text: #e5e7eb;
  --color-text-muted: #9ca3af;
  --color-text-faint: #6b7280;
  --color-surface: #1e293b;
  --color-border: #334155;
  --color-border-strong: #475569;
  --color-success: #22c55e;
  --color-success-light: #052e16;
  --color-warning: #f59e0b;
  --color-warning-light: #451a03;
  --color-error: #ef4444;
  --color-error-light: #350707;
  --color-btn-text: #0f172a;

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-sm:
    0 1px 2px rgba(0, 0, 0, 0.3),
    0 1px 3px rgba(0, 0, 0, 0.2);
  --shadow-md:
    0 2px 4px rgba(0, 0, 0, 0.2),
    0 4px 8px rgba(0, 0, 0, 0.3),
    0 8px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg:
    0 2px 4px rgba(0, 0, 0, 0.15),
    0 4px 8px rgba(0, 0, 0, 0.2),
    0 12px 24px rgba(0, 0, 0, 0.3),
    0 24px 48px rgba(0, 0, 0, 0.2);
  --shadow-primary:
    0 2px 4px rgba(167, 139, 250, 0.06),
    0 4px 8px rgba(167, 139, 250, 0.08),
    0 12px 24px rgba(167, 139, 250, 0.06);
  --cta-shadow: 0 4px 14px rgba(167, 139, 250, 0.25);
  --cta-shadow-hover: 0 6px 20px rgba(167, 139, 250, 0.35);

  --header-bg: rgba(15, 23, 42, 0.85);
  --overlay-bg: rgba(15, 23, 42, 0.88);
  --sticky-bg: rgba(15, 23, 42, 0.97);
}

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

/* Smooth theme transitions on all colored surfaces */
body,
header,
footer,
.card,
.step-card,
.badge,
.nav-panel a,
.logo,
.hero,
.theme-toggle,
.feature-card,
.blog-card {
  transition:
    background-color 0.3s ease,
    color 0.3s ease,
    border-color 0.3s ease;
}

@media (prefers-reduced-motion: reduce) {
  body, header, footer, .card, .step-card, .badge, .nav-panel a,
  .logo, .hero, .theme-toggle, .feature-card, .blog-card {
    transition: none;
  }
}

html {
  scroll-behavior: smooth;
}

/* ===================== Skip link ===================== */
.skip-link {
  position: absolute;
  top: -100%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: var(--color-btn-text);
  padding: 0.5rem 1rem;
  border-radius: 0 0 var(--radius) var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  z-index: var(--z-skip-link);
  text-decoration: none;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

body {
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===================== Announcement Bar ===================== */
.announcement-bar {
  background: #111827;
  color: rgba(255,255,255,0.85);
  text-align: center;
  padding: 0.5rem 1rem;
  font-size: 0.785rem;
  font-weight: 400;
  letter-spacing: 0.01em;
  line-height: 1.4;
}
.announcement-bar strong { font-weight: 600; color: #fff; }
.announcement-bar .ann-cta {
  color: #e9d5ff;
  text-decoration: underline;
  text-underline-offset: 2px;
  font-weight: 500;
  margin-left: 0.35rem;
}
.announcement-bar .ann-cta:hover { color: #fff; }
.announcement-bar .ann-sep { margin: 0 0.4rem; opacity: 0.35; }
[data-theme="dark"] .announcement-bar { background: #1e1b4b; }
[data-theme="dark"] .announcement-bar .ann-cta { color: #e9d5ff; }

/* Strikethrough pricing */
.price-original {
  text-decoration: line-through;
  color: var(--color-text-muted);
  font-size: 0.85em;
  margin-right: 0.25em;
}

/* ===================== Header ===================== */
header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  background: var(--header-bg);
}

.nav-bar {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.875rem var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.nav-panel {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-panel a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

.logo {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.01em;
}

/* ===================== Main ===================== */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ===================== Hero ===================== */
.hero {
  text-align: center;
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -50% -25%;
  background: radial-gradient(
    ellipse at 50% 0%,
    var(--color-primary-faint) 0%,
    transparent 70%
  );
  z-index: -1;
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw + 1rem, 3rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.03em;
  color: var(--color-text);
  text-wrap: balance;
}

.subtitle {
  font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
  color: var(--color-text-muted);
  max-width: 540px;
  margin: 0 auto;
  line-height: 1.65;
  text-wrap: pretty;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
}

/* ===================== Cards ===================== */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  box-shadow: var(--shadow-xs);
  transition:
    box-shadow 0.25s ease-out,
    border-color 0.25s ease-out;
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.01em;
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

/* ===================== Feature cards ===================== */
.feature-grid {
  display: grid;
  gap: var(--spacing-md);
  margin: var(--section-gap) 0;
}

.feature-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: var(--shadow-xs);
  transition:
    box-shadow 0.25s ease-out,
    border-color 0.25s ease-out,
    transform 0.2s ease-out;
}

.feature-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 700;
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===================== Section headings ===================== */
.section-heading {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-heading h2 {
  font-size: clamp(1.25rem, 2.5vw + 0.5rem, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
}

.section-heading p {
  color: var(--color-text-muted);
  font-size: 1rem;
  max-width: 500px;
  margin: 0 auto;
}

/* ===================== Steps ===================== */
.steps-grid {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.step-card {
  flex: 1;
  min-width: 200px;
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition), border-color var(--transition);
}

.step-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
  transform: translateY(-2px);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-btn-text);
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.step-card strong {
  display: block;
  margin-bottom: 0.375rem;
  font-size: 0.95rem;
}

.step-card p {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  line-height: 1.55;
}

/* ===================== Pricing ===================== */
.pricing-card {
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
  box-shadow: var(--shadow-primary);
}

.pricing-card .price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  line-height: 1;
  margin: var(--spacing-md) 0 var(--spacing-xs);
}

.pricing-card .price-note {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-lg);
}

.pricing-card .price-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.pricing-features {
  text-align: left;
  list-style: none;
  padding: 0;
  margin: var(--spacing-lg) 0;
}

.pricing-features li {
  padding: var(--spacing-xs) 0;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.9rem;
  line-height: 1.6;
}

.pricing-features li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
}

/* ===================== Social proof ===================== */
.social-proof {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin: var(--spacing-md) auto 0;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 500;
}
.social-proof-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
  margin-right: 0.25rem;
  vertical-align: middle;
}

/* ===================== Badges ===================== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.625rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ===================== CTA Banner ===================== */
.cta-banner {
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  margin: var(--section-gap) 0;
  box-shadow: var(--shadow-md);
}

.cta-banner h2 {
  margin-bottom: var(--spacing-sm);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.cta-banner p {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  font-size: 0.95rem;
}

/* ===================== Buttons ===================== */
.buy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--color-primary);
  color: var(--color-btn-text);
  padding: 0.875rem 2rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  min-height: 48px;
  min-width: 200px;
  transition:
    background 0.2s ease-out,
    box-shadow 0.2s ease-out,
    transform 0.15s ease-out;
  border: none;
  cursor: pointer;
  letter-spacing: -0.005em;
  box-shadow: var(--cta-shadow);
  position: relative;
  overflow: hidden;
}

.buy-button::after {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.15),
    transparent
  );
  transition: left 0.5s ease-out;
  pointer-events: none;
}

.buy-button:hover::after {
  left: 100%;
}

.buy-button:hover {
  background: var(--color-primary-hover);
  box-shadow: var(--cta-shadow-hover);
  transform: translateY(-2px);
}

.buy-button:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
  transition-duration: 0.05s;
}

.buy-button-lg {
  padding: 0.9375rem 2.25rem;
  font-size: 1.1rem;
  font-weight: 700;
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius);
}

.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: var(--color-bg);
  color: var(--color-primary);
  padding: 0.875rem 2rem;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  min-height: 48px;
  border: 2px solid var(--color-primary);
  cursor: pointer;
  transition:
    background 0.2s ease-out,
    color 0.2s ease-out,
    transform 0.15s ease-out;
}

.secondary-button:hover {
  background: var(--color-primary-faint);
  transform: translateY(-2px);
}

.buy-note {
  margin-top: var(--spacing-sm);
  font-size: 0.825rem;
  color: var(--color-text-muted);
}

/* ===================== Checklist section ===================== */
.checklist {
  list-style: none;
  padding: 0;
  margin: 0;
}

.checklist li {
  padding: var(--spacing-sm) 0;
  padding-left: 1.75rem;
  position: relative;
  font-size: 0.95rem;
  line-height: 1.6;
  border-bottom: 1px solid var(--color-border);
}

.checklist li:last-child {
  border-bottom: none;
}

.checklist li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: 700;
  font-size: 1rem;
}

/* ===================== Blog cards ===================== */
.blog-grid {
  display: grid;
  gap: var(--spacing-md);
  margin: var(--spacing-xl) 0;
}

.blog-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  text-decoration: none;
  color: var(--color-text);
  transition:
    box-shadow 0.25s ease-out,
    border-color 0.25s ease-out,
    transform 0.2s ease-out;
  display: block;
}

.blog-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.blog-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

.blog-card .blog-date {
  font-size: 0.8rem;
  color: var(--color-text-faint);
  margin-bottom: var(--spacing-sm);
}

.blog-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.blog-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin-top: var(--spacing-sm);
}

.blog-tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* ===================== Blog post content ===================== */
.blog-post {
  margin: var(--spacing-xl) 0;
}

.blog-post h1 {
  font-size: clamp(1.5rem, 3vw + 0.5rem, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
}

.blog-post-meta {
  color: var(--color-text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.blog-post-content {
  font-size: 1rem;
  line-height: 1.8;
}

.blog-post-content p {
  margin-bottom: var(--spacing-lg);
}

.blog-post-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.01em;
}

.blog-post-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
}

.blog-post-content a {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: 500;
}

.blog-post-content a:hover {
  text-decoration: underline;
}

.blog-post-content ul,
.blog-post-content ol {
  margin-bottom: var(--spacing-lg);
  padding-left: 1.5rem;
}

.blog-post-content li {
  margin-bottom: var(--spacing-xs);
  line-height: 1.7;
}

.blog-post-content code {
  background: var(--color-surface);
  padding: 0.15rem 0.4rem;
  border-radius: var(--radius-sm);
  font-size: 0.9em;
  border: 1px solid var(--color-border);
}

.blog-post-content pre {
  background: var(--color-surface);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--spacing-lg);
  border: 1px solid var(--color-border);
}

.blog-post-content pre code {
  background: none;
  padding: 0;
  border: none;
}

.blog-post-content blockquote {
  border-left: 3px solid var(--color-primary);
  padding-left: var(--spacing-lg);
  margin: var(--spacing-lg) 0;
  color: var(--color-text-muted);
  font-style: italic;
}

/* ===================== Cross-post link ===================== */
.cross-post-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: var(--spacing-md);
  padding: 0.5rem 1rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition);
}

.cross-post-link:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* ===================== Success page ===================== */
.success-card {
  text-align: center;
  border: 2px solid var(--color-success);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl) var(--spacing-lg);
  margin: var(--spacing-2xl) 0;
  box-shadow: var(--shadow-md);
}

.success-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-success-light);
  color: var(--color-success);
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
}

.success-card h1 {
  font-size: 1.75rem;
  font-weight: 800;
  margin-bottom: var(--spacing-md);
}

.success-card p {
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
}

/* ===================== Free sample ===================== */
.sample-section {
  margin: var(--section-gap) 0;
}

.sample-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
}

.sample-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.sample-card p,
.sample-card ul {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
}

.sample-card ul {
  padding-left: 1.25rem;
  margin-top: var(--spacing-sm);
}

.sample-card li {
  margin-bottom: var(--spacing-xs);
}

/* ===================== Proof section ===================== */
.proof-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  text-align: center;
  margin: var(--section-gap) 0;
}

.proof-section h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
}

.proof-section p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.proof-section a {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
}

.proof-section a:hover {
  text-decoration: underline;
}

/* ===================== Content page ===================== */
.content-page {
  margin: var(--spacing-xl) 0;
}

.content-page h1 {
  font-size: clamp(1.5rem, 3vw + 0.5rem, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-lg);
}

.content-page h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
}

.content-page p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-md);
}

.content-page a {
  color: var(--color-primary);
  text-decoration: none;
}

.content-page a:hover {
  text-decoration: underline;
}

.content-page ul {
  padding-left: 1.25rem;
  margin-bottom: var(--spacing-md);
}

.content-page li {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-xs);
}

/* ===================== Footer ===================== */
footer {
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.825rem;
  margin-top: var(--spacing-2xl);
  background: var(--color-surface);
}

footer .disclaimer {
  margin-bottom: 0.75rem;
  font-style: italic;
  line-height: 1.6;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

footer a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition);
}

footer a:hover {
  color: var(--color-primary);
}

footer p {
  margin-bottom: 0.375rem;
}

/* ===================== Footer Navigation ===================== */
.footer-nav {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
  text-align: left;
  margin-bottom: 1.25rem;
}

.footer-nav-group h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.footer-nav-group a {
  display: block;
  font-size: 0.85rem;
  padding: 0.2rem 0;
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-nav-group a:hover {
  color: var(--color-primary);
}

/* ===================== Scroll reveal ===================== */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ===================== Theme toggle ===================== */
.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  cursor: pointer;
  padding: 0.375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  transition: color var(--transition), border-color var(--transition);
}

.theme-toggle:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
}

[data-theme="light"] .icon-sun,
[data-theme="dark"] .icon-moon {
  display: none;
}

/* ===================== Nav toggle (mobile) ===================== */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-toggle.active span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* ===================== Trust badges ===================== */
.trust-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.trust-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-primary-light);
  color: var(--color-primary);
  letter-spacing: 0.01em;
}

/* ===================== FAQ ===================== */
.faq-list {
  max-width: 640px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--color-border);
  padding: 0;
}

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

.faq-item summary {
  padding: var(--spacing-md) 0;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  color: var(--color-text);
  transition: color var(--transition);
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--color-text-muted);
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.faq-item[open] summary::after {
  content: "-";
}

.faq-item summary:hover {
  color: var(--color-primary);
}

.faq-item p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.7;
  padding-bottom: var(--spacing-md);
  margin: 0;
}

/* ===================== Audience grid ===================== */
.audience-grid {
  display: grid;
  gap: var(--spacing-md);
}

.audience-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition:
    box-shadow 0.25s ease-out,
    border-color 0.25s ease-out;
}

.audience-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: var(--shadow-sm);
}

.audience-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.01em;
}

.audience-card p {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin: 0;
}

/* ===================== Responsive: tablet ===================== */
@media (min-width: 641px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .audience-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===================== Responsive ===================== */
@media (max-width: 640px) {
  .nav-toggle {
    display: flex;
  }

  .nav-panel {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    gap: var(--spacing-sm);
  }

  .nav-panel.nav-open {
    display: flex;
  }

  .hero {
    padding: var(--spacing-xl) 0 var(--spacing-lg);
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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

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

  .pricing-card {
    padding: var(--spacing-lg);
  }

  .pricing-card .price {
    font-size: 2.5rem;
  }
}