/* =============================================================
   Heivol landing page
   Tokens copied verbatim from heivol-theme skill (tokens.md).
   Rule: never use hex outside this :root block. Use var(--hv-*).
   ============================================================= */

:root,
[data-theme="light"] {
  /* Backgrounds */
  --hv-bg: #F7F8FA;
  --hv-surface: #FFFFFF;
  --hv-surface-alt: #F0F2F5;

  /* Text */
  --hv-text: #2D3748;
  --hv-text-secondary: #5A6A7E;
  --hv-text-tertiary: #8B95A5;
  --hv-text-inverse: #FFFFFF;

  /* Borders */
  --hv-border: #E2E8F0;
  --hv-border-strong: #CBD5E1;

  /* AI lane — violet */
  --hv-ai: #6D47E5;
  --hv-ai-hover: #5C3BCF;
  --hv-ai-surface: #EEEAFF;
  --hv-ai-surface-hover: #E2DBFF;
  --hv-ai-text: #4C2FB3;
  --hv-ai-border: #C4B5F5;

  /* Chat lane — coral */
  --hv-chat: #C7432B;
  --hv-chat-hover: #A83722;
  --hv-chat-surface: #FDECE8;
  --hv-chat-surface-hover: #FCDDD6;
  --hv-chat-text: #7A2416;
  --hv-chat-border: #F0B5AA;

  /* Semantic */
  --hv-success: #059669;
  --hv-success-surface: #ECFDF5;
  --hv-success-text: #065F46;
  --hv-warning: #D97706;
  --hv-warning-surface: #FFFBEB;
  --hv-warning-text: #92400E;
  --hv-error: #DC2626;
  --hv-error-surface: #FEF2F2;
  --hv-error-text: #991B1B;
  --hv-info: #2563EB;
  --hv-info-surface: #EFF6FF;
  --hv-info-text: #1E40AF;

  /* Spacing */
  --hv-space-xs: 4px;
  --hv-space-sm: 8px;
  --hv-space-md: 12px;
  --hv-space-lg: 16px;
  --hv-space-xl: 24px;
  --hv-space-2xl: 32px;
  --hv-space-3xl: 48px;

  /* Radii */
  --hv-radius-sm: 4px;
  --hv-radius-md: 8px;
  --hv-radius-lg: 12px;
  --hv-radius-pill: 9999px;

  /* Typography */
  --hv-font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --hv-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --hv-text-xs: 11px;
  --hv-text-sm: 13px;
  --hv-text-base: 15px;
  --hv-text-lg: 18px;
  --hv-text-xl: 22px;
  --hv-font-normal: 400;
  --hv-font-medium: 500;
  --hv-line-height-tight: 1.3;
  --hv-line-height-normal: 1.5;
  --hv-line-height-relaxed: 1.7;

  /* Shadows */
  --hv-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --hv-shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
  --hv-shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.1);
  --hv-shadow-focus: 0 0 0 3px rgba(109, 71, 229, 0.2);
  --hv-shadow-focus-chat: 0 0 0 3px rgba(199, 67, 43, 0.2);

  /* Transitions */
  --hv-transition-fast: 100ms ease;
  --hv-transition-normal: 200ms ease;
  --hv-transition-slow: 300ms ease;
}

[data-theme="dark"] {
  --hv-bg: #0F1219;
  --hv-surface: #1A1F2B;
  --hv-surface-alt: #222937;

  --hv-text: #CBD5E1;
  --hv-text-secondary: #8A94A6;
  --hv-text-tertiary: #5E6878;
  --hv-text-inverse: #0F1219;

  --hv-border: #252D3B;
  --hv-border-strong: #3A4456;

  --hv-ai: #A78BFA;
  --hv-ai-hover: #B9A0FC;
  --hv-ai-surface: #2D2545;
  --hv-ai-surface-hover: #382E55;
  --hv-ai-text: #D4C4FC;
  --hv-ai-border: #5B4A8A;

  --hv-chat: #F09580;
  --hv-chat-hover: #F4AA99;
  --hv-chat-surface: #3A2220;
  --hv-chat-surface-hover: #4A2C28;
  --hv-chat-text: #F5C4B8;
  --hv-chat-border: #7A4035;

  --hv-success: #4ADE80;
  --hv-success-surface: #0F2A1A;
  --hv-success-text: #A7F3D0;
  --hv-warning: #FBBF24;
  --hv-warning-surface: #2A2008;
  --hv-warning-text: #FDE68A;
  --hv-error: #F87171;
  --hv-error-surface: #2A0F0F;
  --hv-error-text: #FECACA;
  --hv-info: #60A5FA;
  --hv-info-surface: #0F1A2E;
  --hv-info-text: #BFDBFE;

  --hv-shadow-sm: none;
  --hv-shadow-md: none;
  --hv-shadow-lg: none;
  --hv-shadow-focus: 0 0 0 3px rgba(167, 139, 250, 0.3);
  --hv-shadow-focus-chat: 0 0 0 3px rgba(240, 149, 128, 0.3);
}

/* =============================================================
   Reset + base
   ============================================================= */

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

html {
  background: var(--hv-bg);
  color: var(--hv-text);
  font-family: var(--hv-font-sans);
  font-size: var(--hv-text-base);
  line-height: var(--hv-line-height-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  transition: background-color var(--hv-transition-normal),
              color var(--hv-transition-normal);
}

h1, h2, h3, h4 {
  margin: 0 0 var(--hv-space-md);
  color: var(--hv-text);
  line-height: var(--hv-line-height-tight);
  font-weight: var(--hv-font-medium);
}

p { margin: 0 0 var(--hv-space-md); }

a {
  color: var(--hv-ai);
  text-decoration: none;
  transition: color var(--hv-transition-fast);
}
a:hover { color: var(--hv-ai-hover); }

code {
  font-family: var(--hv-font-mono);
  font-size: 0.92em;
  background: var(--hv-surface-alt);
  padding: 1px 6px;
  border-radius: var(--hv-radius-sm);
}

:focus-visible {
  outline: none;
  box-shadow: var(--hv-shadow-focus);
  border-radius: var(--hv-radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: var(--hv-space-sm) var(--hv-space-md);
  background: var(--hv-ai);
  color: var(--hv-text-inverse);
  border-radius: var(--hv-radius-md);
  z-index: 100;
}
.skip-link:focus { left: var(--hv-space-md); top: var(--hv-space-md); }

/* =============================================================
   Layout
   ============================================================= */

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--hv-space-xl);
}

section { padding: var(--hv-space-3xl) 0; }

.section-title {
  font-size: 28px;
  margin-bottom: var(--hv-space-md);
}
.section-lede {
  font-size: var(--hv-text-lg);
  color: var(--hv-text-secondary);
  max-width: 60ch;
  margin-bottom: var(--hv-space-2xl);
}

/* =============================================================
   Header
   ============================================================= */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--hv-surface) 92%, transparent);
  backdrop-filter: saturate(160%) blur(8px);
  -webkit-backdrop-filter: saturate(160%) blur(8px);
  border-bottom: 1px solid var(--hv-border);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--hv-space-lg);
  height: 64px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--hv-space-sm);
  color: var(--hv-text);
  font-weight: var(--hv-font-medium);
  font-size: var(--hv-text-lg);
}
.brand:hover { color: var(--hv-text); }
.brand__mark {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: block;
}

.site-nav {
  display: flex;
  gap: var(--hv-space-xl);
  margin-left: var(--hv-space-xl);
}
.site-nav a {
  color: var(--hv-text-secondary);
  font-size: var(--hv-text-sm);
}
.site-nav a:hover { color: var(--hv-text); }

.theme-toggle {
  margin-left: auto;
  width: 36px;
  height: 36px;
  border-radius: var(--hv-radius-pill);
  border: 1px solid var(--hv-border);
  background: var(--hv-surface);
  color: var(--hv-text);
  font-size: 18px;
  cursor: pointer;
  transition: background var(--hv-transition-fast),
              border-color var(--hv-transition-fast);
}
.theme-toggle:hover {
  background: var(--hv-surface-alt);
  border-color: var(--hv-border-strong);
}

/* =============================================================
   Hero
   ============================================================= */

.hero {
  padding: calc(var(--hv-space-3xl) * 1.5) 0;
  background:
    radial-gradient(circle at 15% 0%, var(--hv-ai-surface) 0%, transparent 55%),
    radial-gradient(circle at 85% 30%, var(--hv-chat-surface) 0%, transparent 50%),
    var(--hv-bg);
}
.eyebrow {
  display: inline-block;
  font-size: var(--hv-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--hv-ai-text);
  background: var(--hv-ai-surface);
  padding: 4px 10px;
  border-radius: var(--hv-radius-pill);
  margin-bottom: var(--hv-space-lg);
}
.hero__title {
  font-size: clamp(36px, 6vw, 60px);
  margin-bottom: var(--hv-space-lg);
  letter-spacing: -0.02em;
}
.hero__lede {
  font-size: var(--hv-text-lg);
  color: var(--hv-text-secondary);
  max-width: 60ch;
  margin-bottom: var(--hv-space-xl);
  line-height: var(--hv-line-height-relaxed);
}
.hero__cta {
  display: flex;
  gap: var(--hv-space-md);
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--hv-space-sm);
  padding: 12px 20px;
  border-radius: var(--hv-radius-md);
  font-size: var(--hv-text-base);
  font-weight: var(--hv-font-medium);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background var(--hv-transition-fast),
              border-color var(--hv-transition-fast),
              color var(--hv-transition-fast);
}
.btn--primary {
  background: var(--hv-ai);
  color: var(--hv-text-inverse);
}
.btn--primary:hover { background: var(--hv-ai-hover); color: var(--hv-text-inverse); }
.btn--ghost {
  background: transparent;
  border-color: var(--hv-border-strong);
  color: var(--hv-text);
}
.btn--ghost:hover { background: var(--hv-surface-alt); color: var(--hv-text); }

/* =============================================================
   Philosophy
   ============================================================= */

.philosophy { background: var(--hv-surface); border-top: 1px solid var(--hv-border); border-bottom: 1px solid var(--hv-border); }
.principles {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--hv-space-xl);
}
.principle { padding: var(--hv-space-lg) 0; }
.principle h3 {
  font-size: var(--hv-text-lg);
  color: var(--hv-ai-text);
  margin-bottom: var(--hv-space-sm);
}
[data-theme="dark"] .principle h3 { color: var(--hv-ai); }
.principle p { color: var(--hv-text-secondary); margin: 0; }

/* =============================================================
   Services grid
   ============================================================= */

.services { background: var(--hv-bg); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--hv-space-xl);
}

.card {
  position: relative;
  padding: var(--hv-space-xl);
  background: var(--hv-surface);
  border: 1px solid var(--hv-border);
  border-radius: var(--hv-radius-lg);
  box-shadow: var(--hv-shadow-sm);
  transition: transform var(--hv-transition-normal),
              box-shadow var(--hv-transition-normal),
              border-color var(--hv-transition-normal);
  display: flex;
  flex-direction: column;
}
.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--hv-shadow-md);
  border-color: var(--hv-border-strong);
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--hv-space-lg);
}
.card__icon {
  width: 32px;
  height: 32px;
  color: var(--hv-text-secondary);
  flex-shrink: 0;
}
.card__badge {
  display: inline-block;
  font-size: var(--hv-text-xs);
  font-weight: var(--hv-font-medium);
  padding: 3px 10px;
  border-radius: var(--hv-radius-pill);
  background: var(--hv-surface-alt);
  color: var(--hv-text-secondary);
  border: 1px solid var(--hv-border);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.card__badge--soon {
  background: var(--hv-warning-surface);
  color: var(--hv-warning-text);
  border-color: transparent;
}
.card__title { font-size: var(--hv-text-xl); margin-bottom: var(--hv-space-sm); }
.card__tagline {
  color: var(--hv-text-secondary);
  margin-bottom: var(--hv-space-lg);
  line-height: var(--hv-line-height-relaxed);
}
.card__bullets {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--hv-space-lg);
  flex: 1;
}
.card__bullets li {
  position: relative;
  padding: 6px 0 6px 20px;
  color: var(--hv-text);
  font-size: var(--hv-text-sm);
  line-height: var(--hv-line-height-normal);
}
.card__bullets li::before {
  content: '';
  position: absolute;
  left: 4px;
  top: 13px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.5;
}
.card__meta {
  font-size: var(--hv-text-xs);
  color: var(--hv-text-tertiary);
  margin: 0;
  padding-top: var(--hv-space-md);
  border-top: 1px solid var(--hv-border);
}

/* Lane theming — pairs lane colour with badge label so colour is never alone */
.card--ai {
  background: var(--hv-ai-surface);
  border-color: var(--hv-ai-border);
}
.card--ai .card__icon { color: var(--hv-ai); }
.card--ai .card__title,
.card--ai .card__tagline,
.card--ai .card__bullets li { color: var(--hv-ai-text); }
.card--ai .card__badge {
  background: var(--hv-ai);
  color: var(--hv-text-inverse);
  border-color: transparent;
}
.card--ai .card__meta {
  color: var(--hv-ai-text);
  border-top-color: var(--hv-ai-border);
  opacity: 0.75;
}
.card--ai code { background: var(--hv-ai-surface-hover); color: var(--hv-ai-text); }

.card--chat {
  background: var(--hv-chat-surface);
  border-color: var(--hv-chat-border);
}
.card--chat .card__icon { color: var(--hv-chat); }
.card--chat .card__title,
.card--chat .card__tagline,
.card--chat .card__bullets li { color: var(--hv-chat-text); }
.card--chat .card__badge {
  background: var(--hv-chat);
  color: var(--hv-text-inverse);
  border-color: transparent;
}
.card--chat .card__meta {
  color: var(--hv-chat-text);
  border-top-color: var(--hv-chat-border);
  opacity: 0.75;
}
.card--chat a:focus-visible { box-shadow: var(--hv-shadow-focus-chat); }

.card--storage .card__icon,
.card--id .card__icon { color: var(--hv-ai); }

/* Card CTA link — makes the whole card feel clickable */
.card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--hv-space-xs);
  font-size: var(--hv-text-sm);
  font-weight: var(--hv-font-medium);
  color: var(--hv-ai);
  margin-top: var(--hv-space-md);
  transition: color var(--hv-transition-fast), gap var(--hv-transition-fast);
}
.card__cta:hover { color: var(--hv-ai-hover); gap: var(--hv-space-sm); }
.card--ai .card__cta { color: var(--hv-ai-text); }
.card--ai .card__cta:hover { color: var(--hv-ai); }
.card--chat .card__cta { color: var(--hv-chat-text); }
.card--chat .card__cta:hover { color: var(--hv-chat); }

/* =============================================================
   Founders
   ============================================================= */

.founders {
  background: var(--hv-surface);
  border-top: 1px solid var(--hv-border);
}
.founders__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--hv-space-xl);
}
.founder {
  display: block;
  padding: var(--hv-space-lg);
  background: var(--hv-surface-alt);
  border: 1px solid transparent;
  border-radius: var(--hv-radius-md);
  color: var(--hv-text);
  text-decoration: none;
  transition: background var(--hv-transition-fast),
              border-color var(--hv-transition-fast),
              transform var(--hv-transition-fast);
}
.founder:hover {
  background: var(--hv-ai-surface);
  border-color: var(--hv-ai-border);
  color: var(--hv-text);
  transform: translateY(-1px);
}
[data-theme="dark"] .founder:hover {
  background: var(--hv-ai-surface);
  border-color: var(--hv-ai-border);
}
.founder:focus-visible {
  outline: none;
  box-shadow: var(--hv-shadow-focus);
}
.founder h3 {
  display: flex;
  align-items: center;
  gap: var(--hv-space-sm);
  font-size: var(--hv-text-lg);
  margin-bottom: var(--hv-space-sm);
  color: var(--hv-text);
}
.founder p {
  margin: 0;
  color: var(--hv-text-secondary);
}
.founder__external {
  width: 14px;
  height: 14px;
  color: var(--hv-text-tertiary);
  flex-shrink: 0;
  transition: color var(--hv-transition-fast),
              transform var(--hv-transition-fast);
}
.founder:hover .founder__external {
  color: var(--hv-ai);
  transform: translate(1px, -1px);
}
@media (prefers-reduced-motion: reduce) {
  .founder:hover { transform: none; }
  .founder:hover .founder__external { transform: none; }
}

/* =============================================================
   Signup form
   ============================================================= */

.signup {
  background:
    radial-gradient(circle at 15% 0%, var(--hv-ai-surface) 0%, transparent 55%),
    var(--hv-bg);
  padding: calc(var(--hv-space-3xl) * 1.5) 0;
}
.signup__back {
  display: inline-block;
  font-size: var(--hv-text-sm);
  color: var(--hv-ai);
  margin-bottom: var(--hv-space-xl);
}
.signup__back:hover { color: var(--hv-ai-hover); }
.signup__title {
  font-size: clamp(28px, 5vw, 42px);
  letter-spacing: -0.02em;
  margin-bottom: var(--hv-space-md);
}
.signup__lede {
  font-size: var(--hv-text-lg);
  color: var(--hv-text-secondary);
  max-width: 52ch;
  margin-bottom: var(--hv-space-2xl);
  line-height: var(--hv-line-height-relaxed);
}

.signup-form {
  max-width: 480px;
  display: flex;
  flex-direction: column;
  gap: var(--hv-space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--hv-space-xs);
}
.form-label {
  font-size: var(--hv-text-sm);
  font-weight: var(--hv-font-medium);
  color: var(--hv-text);
}
.form-optional {
  font-weight: var(--hv-font-normal);
  color: var(--hv-text-tertiary);
}
.form-input {
  width: 100%;
  padding: 10px var(--hv-space-md);
  font-family: var(--hv-font-sans);
  font-size: var(--hv-text-base);
  color: var(--hv-text);
  background: var(--hv-surface);
  border: 1px solid var(--hv-border);
  border-radius: var(--hv-radius-md);
  transition: border-color var(--hv-transition-fast),
              box-shadow var(--hv-transition-fast);
}
.form-input::placeholder { color: var(--hv-text-tertiary); }
.form-input:hover { border-color: var(--hv-border-strong); }
.form-input:focus {
  outline: none;
  border-color: var(--hv-ai);
  box-shadow: var(--hv-shadow-focus);
}
.form-textarea {
  resize: vertical;
  min-height: 80px;
}

.signup-form__submit {
  margin-top: var(--hv-space-sm);
  align-self: flex-start;
}

/* =============================================================
   Footer
   ============================================================= */

.site-footer {
  background: var(--hv-surface-alt);
  border-top: 1px solid var(--hv-border);
  padding: var(--hv-space-xl) 0;
}
.site-footer__inner {
  display: flex;
  flex-direction: column;
  gap: var(--hv-space-sm);
  align-items: center;
  text-align: center;
}
.site-footer__tagline { margin: 0; color: var(--hv-text-secondary); font-size: var(--hv-text-sm); }
.site-footer__meta { margin: 0; font-size: var(--hv-text-xs); color: var(--hv-text-tertiary); }
.site-footer__meta a { color: var(--hv-text-secondary); }
.site-footer__meta a:hover { color: var(--hv-text); }

/* =============================================================
   Product pages
   ============================================================= */

.product-hero {
  padding: calc(var(--hv-space-3xl) * 1.5) 0;
  background: var(--hv-bg);
}
.product-hero__back {
  display: inline-block;
  font-size: var(--hv-text-sm);
  color: var(--hv-ai);
  margin-bottom: var(--hv-space-xl);
}
.product-hero__back:hover { color: var(--hv-ai-hover); }
.product-hero__header {
  display: flex;
  align-items: center;
  gap: var(--hv-space-lg);
  margin-bottom: var(--hv-space-lg);
}
.product-hero__icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}
.product-hero__badge {
  display: inline-block;
  font-size: var(--hv-text-xs);
  font-weight: var(--hv-font-medium);
  padding: 3px 10px;
  border-radius: var(--hv-radius-pill);
  background: var(--hv-surface-alt);
  color: var(--hv-text-secondary);
  border: 1px solid var(--hv-border);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.product-hero__title {
  font-size: clamp(32px, 5vw, 48px);
  letter-spacing: -0.02em;
  margin-bottom: var(--hv-space-md);
}
.product-hero__tagline {
  font-size: var(--hv-text-lg);
  color: var(--hv-text-secondary);
  max-width: 60ch;
  margin-bottom: var(--hv-space-xl);
  line-height: var(--hv-line-height-relaxed);
}
.product-hero__cta {
  display: flex;
  gap: var(--hv-space-md);
  flex-wrap: wrap;
}

/* Features grid */
.features {
  padding: var(--hv-space-3xl) 0;
  background: var(--hv-surface);
  border-top: 1px solid var(--hv-border);
  border-bottom: 1px solid var(--hv-border);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--hv-space-xl);
}
.feature-item {
  padding: var(--hv-space-lg);
}
.feature-item__title {
  font-size: var(--hv-text-lg);
  margin-bottom: var(--hv-space-sm);
}
.feature-item__desc {
  color: var(--hv-text-secondary);
  margin: 0;
  line-height: var(--hv-line-height-relaxed);
}

/* Alternating features background for the second feature grid */
.features--alt {
  background: var(--hv-bg);
}

/* Section lede — intro paragraph under a section title */
.section-lede {
  color: var(--hv-text-secondary);
  max-width: 60ch;
  margin: 0 0 var(--hv-space-2xl);
  line-height: var(--hv-line-height-relaxed);
}

/* =============================================================
   Hero topology — one user → many channels → one VM
   ============================================================= */
.topology {
  margin: var(--hv-space-2xl) 0 0;
  padding: 0;
  color: var(--hv-ai);
  max-width: 820px;
}
.topology__svg {
  width: 100%;
  height: auto;
  display: block;
}
.topology__cap {
  font-size: var(--hv-text-sm);
  color: var(--hv-text-tertiary);
  text-align: center;
  margin-top: var(--hv-space-sm);
  max-width: 60ch;
  margin-inline: auto;
  line-height: var(--hv-line-height-relaxed);
}
@media (prefers-reduced-motion: no-preference) {
  .topology__svg circle[r="3"] {
    animation: topo-blink 1.8s ease-in-out infinite;
  }
  .topology__svg circle[r="3"]:nth-of-type(2) { animation-delay: 0.2s; }
  .topology__svg circle[r="3"]:nth-of-type(3) { animation-delay: 0.4s; }
}
@keyframes topo-blink {
  0%, 100% { opacity: 0.25; }
  50% { opacity: 0.9; }
}

/* =============================================================
   Showcase — conversation mockups
   ============================================================= */
.showcase {
  padding: var(--hv-space-3xl) 0;
  background: var(--hv-surface);
  border-top: 1px solid var(--hv-border);
  border-bottom: 1px solid var(--hv-border);
}
.mockup-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--hv-space-xl);
  margin-bottom: var(--hv-space-3xl);
}

.mockup {
  margin: 0;
  background: var(--hv-bg);
  border: 1px solid var(--hv-border);
  border-radius: var(--hv-radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
  display: flex;
  flex-direction: column;
  min-height: 480px;
}
.mockup__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--hv-surface);
  border-bottom: 1px solid var(--hv-border);
}
.mockup__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--hv-border);
  flex-shrink: 0;
}
.mockup__dot--red { background: #FF5F57; }
.mockup__dot--amber { background: #FFBD2E; }
.mockup__dot--green { background: #28C840; }
.mockup__title {
  font-size: var(--hv-text-sm);
  font-weight: 600;
  color: var(--hv-text-secondary);
  margin-left: var(--hv-space-sm);
}
.mockup__sub {
  font-size: var(--hv-text-xs);
  color: var(--hv-text-tertiary);
  margin-left: var(--hv-space-sm);
}
.mockup__body {
  padding: var(--hv-space-md);
  display: flex;
  flex-direction: column;
  gap: var(--hv-space-sm);
  flex: 1;
}

/* --- iMessage-style bubbles --- */
.bubble {
  max-width: 80%;
  padding: 8px 14px;
  border-radius: 18px;
  font-size: 13px;
  line-height: 1.4;
  word-wrap: break-word;
}
.bubble--left {
  align-self: flex-start;
  background: var(--hv-surface);
  color: var(--hv-text-primary);
  border: 1px solid var(--hv-border);
  border-bottom-left-radius: 6px;
}
.bubble--right {
  align-self: flex-end;
  background: linear-gradient(180deg, #4aa7ff 0%, #1f7af0 100%);
  color: #fff;
  border-bottom-right-radius: 6px;
}
.bubble--thin {
  max-width: 70%;
}
.bubble--voice {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
}
.voice-play {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--hv-ai);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  padding-left: 2px;
}
.voice-wave {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  height: 20px;
}
.voice-wave span {
  width: 2px;
  background: var(--hv-ai);
  opacity: 0.75;
  border-radius: 1px;
}
.voice-wave span:nth-child(1) { height: 30%; }
.voice-wave span:nth-child(2) { height: 55%; }
.voice-wave span:nth-child(3) { height: 80%; }
.voice-wave span:nth-child(4) { height: 45%; }
.voice-wave span:nth-child(5) { height: 70%; }
.voice-wave span:nth-child(6) { height: 90%; }
.voice-wave span:nth-child(7) { height: 60%; }
.voice-wave span:nth-child(8) { height: 40%; }
.voice-wave span:nth-child(9) { height: 75%; }
.voice-wave span:nth-child(10) { height: 55%; }
.voice-wave span:nth-child(11) { height: 35%; }
.voice-wave span:nth-child(12) { height: 50%; }
.voice-time {
  font-size: 11px;
  color: var(--hv-text-tertiary);
  font-variant-numeric: tabular-nums;
}
.bubble__transcript {
  font-size: 11px;
  color: var(--hv-text-tertiary);
  font-style: italic;
  margin: -4px 0 0 40px;
  max-width: 80%;
}
.bubble--list {
  padding: 10px 14px;
}
.bubble--list strong {
  display: block;
  margin-bottom: 6px;
  font-size: 12px;
  opacity: 0.9;
}
.bubble--list ul {
  margin: 0;
  padding-left: 18px;
  font-size: 12px;
}
.bubble--list li {
  margin: 2px 0;
}
.bubble__meta {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  opacity: 0.75;
}

/* --- Telegram-style bubbles --- */
.mockup--telegram {
  background: linear-gradient(180deg, #e4edf5 0%, #d4e2ef 100%);
}
[data-theme="dark"] .mockup--telegram {
  background: linear-gradient(180deg, #17212B 0%, #0E1621 100%);
}
.mockup__header--telegram {
  background: #517da2;
  border-bottom: none;
  color: #fff;
  gap: 10px;
}
.mockup__header--telegram .mockup__title,
.mockup__header--telegram .mockup__sub {
  color: #fff;
  margin-left: 0;
}
.mockup__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--hv-ai);
  color: #fff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 14px;
  flex-shrink: 0;
}
.mockup__heading {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}
.mockup__body--telegram {
  background: transparent;
}
.tg-bubble {
  align-self: flex-start;
  background: #fff;
  color: #1a1a1a;
  padding: 8px 12px;
  border-radius: 12px;
  font-size: 13px;
  max-width: 85%;
  position: relative;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}
[data-theme="dark"] .tg-bubble {
  background: #182533;
  color: #e8e8e8;
}
.tg-bubble--me {
  align-self: flex-end;
  background: #effdde;
}
[data-theme="dark"] .tg-bubble--me {
  background: #2b5278;
  color: #fff;
}
.tg-bubble--alert {
  background: #fff6e5;
  border-left: 3px solid #f5a623;
}
[data-theme="dark"] .tg-bubble--alert {
  background: #3d2f14;
  color: #ffd180;
}
.tg-bubble--alert strong {
  display: block;
  margin-bottom: 6px;
}
.tg-row {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  padding: 2px 0;
}
.tg-row--meta {
  font-size: 11px;
  opacity: 0.65;
}
.tg-down {
  color: #d64040;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.tg-time {
  display: block;
  font-size: 10px;
  opacity: 0.55;
  margin-top: 4px;
  text-align: right;
}
.tg-time--me { color: #4a7a4a; }
[data-theme="dark"] .tg-time--me { color: #a0d4ff; }

/* --- Slack-style message --- */
.mockup--slack {
  background: #fff;
}
[data-theme="dark"] .mockup--slack {
  background: #1A1D21;
}
.mockup__header--slack {
  gap: 6px;
  background: #fff;
  border-bottom: 1px solid var(--hv-border);
}
[data-theme="dark"] .mockup__header--slack {
  background: #1A1D21;
}
.mockup__hash {
  color: var(--hv-text-tertiary);
  font-weight: 700;
  font-size: 16px;
  margin-left: var(--hv-space-sm);
}
.mockup__body--slack {
  padding: var(--hv-space-md) var(--hv-space-md) var(--hv-space-md) var(--hv-space-sm);
}
.slack-msg {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}
.slack-avatar {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: var(--hv-ai);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}
.slack-content {
  flex: 1;
  min-width: 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--hv-text-primary);
}
.slack-content p { margin: 6px 0; }
.slack-content ul {
  margin: 4px 0 4px 0;
  padding-left: 18px;
  font-size: 12.5px;
}
.slack-content li { margin: 2px 0; }
.slack-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-bottom: 2px;
  font-size: 13px;
}
.slack-meta span:first-of-type {
  font-size: 9px;
  background: var(--hv-border);
  color: var(--hv-text-secondary);
  padding: 1px 4px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.05em;
}
.slack-time {
  font-size: 12px;
  color: var(--hv-text-tertiary);
  font-weight: 400;
  background: transparent !important;
  padding: 0 !important;
}
.slack-footer {
  font-size: 12px !important;
  color: var(--hv-text-tertiary);
  border-top: 1px solid var(--hv-border);
  padding-top: 8px;
  margin-top: 10px !important;
}

/* =============================================================
   Live Canvas preview
   ============================================================= */
.canvas-preview {
  margin: 0;
  max-width: 900px;
  margin-inline: auto;
}
.canvas-preview__frame {
  border: 1px solid var(--hv-border);
  border-radius: var(--hv-radius-lg);
  overflow: hidden;
  background: var(--hv-bg);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.08);
}
.canvas-preview__header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--hv-surface);
  border-bottom: 1px solid var(--hv-border);
}
.canvas-preview__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--hv-space-sm);
  padding: var(--hv-space-md);
  background:
    radial-gradient(circle at 20% 20%, var(--hv-ai-surface) 0%, transparent 50%),
    var(--hv-bg);
}
@media (max-width: 640px) {
  .canvas-preview__grid { grid-template-columns: 1fr 1fr; }
}
.canvas-card {
  background: var(--hv-surface);
  border: 1px solid var(--hv-border);
  border-radius: var(--hv-radius-md);
  padding: 12px;
  font-size: 12px;
  line-height: 1.4;
  color: var(--hv-text-secondary);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.canvas-card:hover {
  transform: translateY(-2px) rotate(0.3deg);
  box-shadow: 0 8px 20px rgba(109, 71, 229, 0.12);
  z-index: 1;
}
.canvas-card strong {
  display: block;
  color: var(--hv-text-primary);
  font-size: 13px;
  margin: 4px 0;
}
.canvas-card p { margin: 2px 0; }
.canvas-card__label {
  display: inline-block;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--hv-ai-text);
  font-weight: 600;
}
[data-theme="dark"] .canvas-card__label { color: var(--hv-ai); }
.canvas-card__meta {
  margin-top: 6px !important;
  font-size: 11px;
  color: var(--hv-text-tertiary);
}
/* Slight rotation variance to feel hand-arranged */
.canvas-card--a { transform: rotate(-0.4deg); }
.canvas-card--b { transform: rotate(0.5deg); }
.canvas-card--c { transform: rotate(-0.2deg); grid-row: span 1; }
.canvas-card--d { transform: rotate(0.3deg); }
.canvas-card--e { transform: rotate(-0.5deg); }
.canvas-card--note {
  background: var(--hv-ai-surface);
  border-color: transparent;
  transform: rotate(0.6deg);
}
.canvas-card--note p { color: var(--hv-ai-text); }
[data-theme="dark"] .canvas-card--note p { color: var(--hv-ai); }

/* Scenario cards — everyday life examples */
.scenarios {
  padding: var(--hv-space-3xl) 0;
  background: var(--hv-bg);
}
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--hv-space-lg);
}
.scenario {
  padding: var(--hv-space-lg);
  border: 1px solid var(--hv-border);
  border-radius: var(--hv-radius-lg);
  background: var(--hv-surface);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.scenario:hover {
  border-color: var(--hv-ai);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(109, 71, 229, 0.08);
}
.scenario__icon {
  font-size: 28px;
  line-height: 1;
  margin-bottom: var(--hv-space-sm);
}
.scenario__title {
  font-size: var(--hv-text-lg);
  margin: 0 0 var(--hv-space-sm);
  color: var(--hv-ai-text);
}
[data-theme="dark"] .scenario__title { color: var(--hv-ai); }
.scenario__desc {
  color: var(--hv-text-secondary);
  margin: 0;
  line-height: var(--hv-line-height-relaxed);
}

/* Channel chips */
.channels {
  padding: var(--hv-space-3xl) 0;
  background: var(--hv-surface);
  border-top: 1px solid var(--hv-border);
  border-bottom: 1px solid var(--hv-border);
}
.channel-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--hv-space-sm);
  list-style: none;
  padding: 0;
  margin: 0;
}
.chip {
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--hv-radius-pill);
  background: var(--hv-ai-surface);
  color: var(--hv-ai-text);
  font-size: var(--hv-text-sm);
  font-weight: 500;
  border: 1px solid transparent;
  transition: background 0.15s ease, transform 0.15s ease;
}
.chip:hover {
  background: var(--hv-ai-surface-hover);
  transform: translateY(-1px);
}
[data-theme="dark"] .chip {
  color: var(--hv-ai);
}

/* FAQ */
.faq {
  padding: var(--hv-space-3xl) 0;
}
.faq-list {
  max-width: 70ch;
}
.faq-item {
  border-top: 1px solid var(--hv-border);
  padding: var(--hv-space-md) 0;
}
.faq-item:last-child {
  border-bottom: 1px solid var(--hv-border);
}
.faq-item__q {
  font-weight: 600;
  font-size: var(--hv-text-lg);
  cursor: pointer;
  list-style: none;
  padding: var(--hv-space-sm) 0;
  position: relative;
  padding-right: var(--hv-space-xl);
}
.faq-item__q::-webkit-details-marker { display: none; }
.faq-item__q::after {
  content: "+";
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5em;
  font-weight: 300;
  color: var(--hv-text-tertiary);
  transition: transform 0.2s ease;
}
.faq-item[open] .faq-item__q::after {
  content: "\2212";
  transform: translateY(-50%) rotate(0deg);
}
.faq-item__a {
  color: var(--hv-text-secondary);
  line-height: var(--hv-line-height-relaxed);
  padding: var(--hv-space-xs) 0 var(--hv-space-sm);
}
.faq-item__a p { margin: 0; }

/* Status banner */
.status-banner {
  padding: var(--hv-space-3xl) 0;
  text-align: center;
}
.status-banner__label {
  display: inline-block;
  font-size: var(--hv-text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--hv-text-tertiary);
  margin-bottom: var(--hv-space-md);
}
.status-banner__text {
  font-size: var(--hv-text-lg);
  color: var(--hv-text-secondary);
  max-width: 50ch;
  margin: 0 auto var(--hv-space-xl);
}

/* Page-level lane theming */
.page--ai .product-hero {
  background:
    radial-gradient(circle at 15% 0%, var(--hv-ai-surface) 0%, transparent 55%),
    var(--hv-bg);
}
.page--ai .product-hero__icon { color: var(--hv-ai); }
.page--ai .product-hero__badge {
  background: var(--hv-ai);
  color: var(--hv-text-inverse);
  border-color: transparent;
}
.page--ai .feature-item__title { color: var(--hv-ai-text); }
[data-theme="dark"] .page--ai .feature-item__title { color: var(--hv-ai); }

.page--chat .product-hero {
  background:
    radial-gradient(circle at 85% 0%, var(--hv-chat-surface) 0%, transparent 55%),
    var(--hv-bg);
}
.page--chat .product-hero__icon { color: var(--hv-chat); }
.page--chat .product-hero__badge {
  background: var(--hv-chat);
  color: var(--hv-text-inverse);
  border-color: transparent;
}
.page--chat .product-hero__cta .btn--primary {
  background: var(--hv-chat);
}
.page--chat .product-hero__cta .btn--primary:hover {
  background: var(--hv-chat-hover);
}
.page--chat .feature-item__title { color: var(--hv-chat-text); }
[data-theme="dark"] .page--chat .feature-item__title { color: var(--hv-chat); }
.page--chat a:focus-visible { box-shadow: var(--hv-shadow-focus-chat); }

.page--storage .product-hero__icon,
.page--id .product-hero__icon { color: var(--hv-ai); }
.page--storage .product-hero__badge {
  background: var(--hv-warning-surface);
  color: var(--hv-warning-text);
  border-color: transparent;
}

/* =============================================================
   Small screens
   ============================================================= */

@media (max-width: 640px) {
  .site-nav { display: none; }
  .container { padding: 0 var(--hv-space-lg); }
  section { padding: var(--hv-space-2xl) 0; }
  .hero { padding: var(--hv-space-2xl) 0; }
}

/* =============================================================
   Reduced motion
   ============================================================= */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .card:hover { transform: none; }
}