/* ============================================
   KARENLEE — Apple Platform Development
   Design System v1.0
   ============================================ */

:root {
  /* Palette — light */
  --bg: #ffffff;
  --bg-elev: #fbfbfd;
  --bg-soft: #f5f5f7;
  --bg-card: #ffffff;
  --fg: #1d1d1f;
  --fg-soft: #424245;
  --fg-mute: #6e6e73;
  --fg-faint: #86868b;
  --line: #d2d2d7;
  --line-soft: #e8e8ed;
  --accent: #0066cc;
  --accent-hover: #0058b0;
  --accent-soft: #e8f1fc;
  --success: #248a3d;
  --warn: #b25000;
  --danger: #d70015;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
    "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* Scale */
  --step-0: 0.9375rem;
  --step-1: 1.0625rem;
  --step-2: 1.25rem;
  --step-3: 1.5rem;
  --step-4: 2rem;
  --step-5: 2.75rem;
  --step-6: 3.75rem;
  --step-7: 5rem;
  --step-8: 6.5rem;

  /* Spacing */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --space-8: 8rem;

  /* Radius */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;
  --r-full: 9999px;

  /* Shadow */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04), 0 1px 1px rgba(0, 0, 0, 0.03);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.08), 0 2px 4px rgba(0, 0, 0, 0.04);

  /* Layout */
  --container: 1240px;
  --container-narrow: 920px;
  --container-reading: 720px;
  --nav-h: 52px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 160ms;
  --t-base: 280ms;
  --t-slow: 520ms;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --bg-elev: #0a0a0a;
    --bg-soft: #161617;
    --bg-card: #1d1d1f;
    --fg: #f5f5f7;
    --fg-soft: #d6d6d6;
    --fg-mute: #a1a1a6;
    --fg-faint: #6e6e73;
    --line: #2d2d2f;
    --line-soft: #1d1d1f;
    --accent: #2997ff;
    --accent-hover: #4cabff;
    --accent-soft: #0c2540;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
  }
}

[data-theme="light"] {
  --bg: #ffffff;
  --bg-elev: #fbfbfd;
  --bg-soft: #f5f5f7;
  --bg-card: #ffffff;
  --fg: #1d1d1f;
  --fg-soft: #424245;
  --fg-mute: #6e6e73;
  --fg-faint: #86868b;
  --line: #d2d2d7;
  --line-soft: #e8e8ed;
  --accent: #0066cc;
  --accent-hover: #0058b0;
  --accent-soft: #e8f1fc;
}

[data-theme="dark"] {
  --bg: #000000;
  --bg-elev: #0a0a0a;
  --bg-soft: #161617;
  --bg-card: #1d1d1f;
  --fg: #f5f5f7;
  --fg-soft: #d6d6d6;
  --fg-mute: #a1a1a6;
  --fg-faint: #6e6e73;
  --line: #2d2d2f;
  --line-soft: #1d1d1f;
  --accent: #2997ff;
  --accent-hover: #4cabff;
  --accent-soft: #0c2540;
}

/* ============================================
   Reset
   ============================================ */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + env(safe-area-inset-top, 0px) + 16px);
  overflow-x: hidden;
}
body {
  font-family: var(--font-sans);
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
  width: 100%;
  max-width: 100vw;
}
img, picture, svg, video { display: block; max-width: 100%; }
button, input, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
a { color: var(--accent); text-decoration: none; transition: color var(--t-fast) var(--ease-out); }
a:hover { color: var(--accent-hover); }
::selection { background: var(--accent); color: #fff; }

/* ============================================
   Typography
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  letter-spacing: -0.022em;
  line-height: 1.1;
  color: var(--fg);
}
.eyebrow {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}
.lede {
  font-size: var(--step-3);
  line-height: 1.35;
  color: var(--fg-soft);
  font-weight: 400;
  letter-spacing: -0.012em;
}
.muted { color: var(--fg-mute); }
.kbd {
  font-family: var(--font-mono);
  font-size: 0.85em;
  padding: 0.125em 0.4em;
  background: var(--bg-soft);
  border: 1px solid var(--line-soft);
  border-radius: 4px;
}

/* ============================================
   Layout helpers
   ============================================ */
.container { width: min(100% - 2.5rem, var(--container)); margin-inline: auto; }
.container-narrow { width: min(100% - 2.5rem, var(--container-narrow)); margin-inline: auto; }
.container-reading { width: min(100% - 2.5rem, var(--container-reading)); margin-inline: auto; }
.section { padding-block: var(--space-7); }
.section-sm { padding-block: var(--space-5); }
.section-lg { padding-block: var(--space-8); }
.divider { border: 0; border-top: 1px solid var(--line-soft); margin-block: 0; }
.stack > * + * { margin-top: var(--space-3); }
.stack-sm > * + * { margin-top: var(--space-2); }
.stack-lg > * + * { margin-top: var(--space-4); }
.cluster { display: flex; flex-wrap: wrap; gap: var(--space-2); align-items: center; }
.grid-2 { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { display: grid; gap: var(--space-3); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.text-center { text-align: center; }

/* ============================================
   Nav
   ============================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--bg) 75%, transparent);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line-soft);
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
  width: min(100% - 2.5rem, var(--container));
  margin-inline: auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: -0.015em;
  color: var(--fg);
}
.brand:hover { color: var(--fg); }
.brand-mark {
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
  padding: 0;
}
.nav-menu a {
  display: inline-block;
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  color: var(--fg-soft);
  border-radius: var(--r-sm);
  transition: all var(--t-fast) var(--ease-out);
}
.nav-menu a:hover { color: var(--fg); background: var(--bg-soft); }
.nav-menu a.active { color: var(--fg); font-weight: 500; }
.nav-actions { display: flex; align-items: center; gap: 0.5rem; }
.nav-toggle {
  display: none;
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  align-items: center;
  justify-content: center;
}
.nav-toggle:hover { background: var(--bg-soft); }
.nav-toggle svg { width: 18px; height: 18px; }
.theme-toggle {
  width: 36px;
  height: 36px;
  border-radius: var(--r-sm);
  display: grid;
  place-items: center;
  color: var(--fg-soft);
  transition: all var(--t-fast) var(--ease-out);
}
.theme-toggle:hover { background: var(--bg-soft); color: var(--fg); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .sun { display: none; }
[data-theme="dark"] .theme-toggle .sun { display: block; }
[data-theme="dark"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) .theme-toggle .sun { display: block; }
  :root:not([data-theme]) .theme-toggle .moon { display: none; }
}

@media (max-width: 860px) {
  .nav-toggle { display: grid; }
  .nav-menu {
    position: fixed;
    inset: calc(var(--nav-h) + env(safe-area-inset-top, 0px)) 0 auto 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line-soft);
    padding: 0.5rem 1.25rem 1rem;
    transform: translateY(-150%);
    transition: transform var(--t-base) var(--ease-out);
  }
  .nav-menu.open { transform: translateY(0); }
  .nav-menu a {
    padding: 0.875rem 0.5rem;
    border-bottom: 1px solid var(--line-soft);
    border-radius: 0;
  }
  .nav-menu li:last-child a { border-bottom: 0; }
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 1.25rem;
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1;
  border-radius: var(--r-full);
  transition: all var(--t-fast) var(--ease-out);
  cursor: pointer;
  text-align: center;
  border: 1px solid transparent;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #ffffff;
}
.btn-primary:hover { background: var(--accent-hover); color: #ffffff; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-secondary {
  background: var(--bg-soft);
  color: var(--fg);
  border-color: var(--bg-soft);
}
.btn-secondary:hover { background: var(--line-soft); color: var(--fg); }
.btn-ghost {
  background: transparent;
  color: var(--fg);
}
.btn-ghost:hover { background: var(--bg-soft); color: var(--fg); }
.btn-outline {
  background: transparent;
  color: var(--fg);
  border-color: var(--line);
}
.btn-outline:hover { background: var(--bg-soft); color: var(--fg); }
.btn-lg { padding: 0.9rem 1.6rem; font-size: 1rem; }
.btn-sm { padding: 0.5rem 0.9rem; font-size: 0.8125rem; }
.btn-link {
  color: var(--accent);
  padding: 0;
  background: none;
  border: 0;
  font-weight: 500;
}
.btn-link:hover { color: var(--accent-hover); text-decoration: none; }
.btn-link::after {
  content: "›";
  margin-left: 0.25rem;
  display: inline-block;
  transition: transform var(--t-fast) var(--ease-out);
}
.btn-link:hover::after { transform: translateX(3px); }

/* ============================================
   Hero
   ============================================ */
.hero {
  padding-block: clamp(3rem, 8vw, 7rem) clamp(2.5rem, 6vw, 5rem);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero-eyebrow {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  background: var(--bg-soft);
  border-radius: var(--r-full);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--fg-soft);
  margin-bottom: 1.5rem;
}
.hero-eyebrow .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  margin-right: 0.5rem;
  vertical-align: middle;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}
.hero h1 {
  font-size: clamp(2.5rem, 6.5vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.05;
  margin-bottom: 1.5rem;
}
.hero h1 .grad {
  background: linear-gradient(135deg, #06c, #29f);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
[data-theme="dark"] .hero h1 .grad { background: linear-gradient(135deg, #29f, #6cf); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
.hero .lede {
  max-width: 640px;
  margin: 0 auto 2rem;
}
.hero-cta { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* ============================================
   Cards
   ============================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-lg);
  padding: var(--space-3);
  transition: all var(--t-base) var(--ease-out);
}
.card:hover { transform: translateY(-2px); box-shadow: var(--shadow-md); border-color: var(--line); }
.card-soft {
  background: var(--bg-soft);
  border: 0;
  border-radius: var(--r-lg);
  padding: var(--space-3);
}
.card-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--r-md);
  background: var(--accent-soft);
  color: var(--accent);
  display: grid;
  place-items: center;
  margin-bottom: 1rem;
}
.card-icon svg { width: 22px; height: 22px; }
.card h3 { font-size: var(--step-2); margin-bottom: 0.5rem; }
.card p { color: var(--fg-mute); font-size: 0.9375rem; line-height: 1.55; }

/* Platform card (large) */
.platform-card {
  background: var(--bg-soft);
  border-radius: var(--r-xl);
  padding: clamp(1.75rem, 3vw, 2.75rem);
  position: relative;
  overflow: hidden;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.platform-card .platform-glyph {
  width: 56px;
  height: 56px;
  display: grid;
  place-items: center;
  border-radius: var(--r-md);
  background: var(--bg-card);
  color: var(--fg);
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
}
.platform-card .platform-glyph svg { width: 30px; height: 30px; }
.platform-card h3 { font-size: var(--step-4); margin-bottom: 0.75rem; }
.platform-card p { color: var(--fg-mute); font-size: 1rem; max-width: 30ch; }
.platform-card.large { min-height: 480px; }

/* ============================================
   Forms
   ============================================ */
.form { display: grid; gap: 1rem; }
.field { display: grid; gap: 0.4rem; }
.field label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--fg-soft);
}
.field input,
.field textarea,
.field select {
  width: 100%;
  padding: 0.75rem 0.875rem;
  font-size: 0.9375rem;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  transition: all var(--t-fast) var(--ease-out);
  font-family: inherit;
}
.field textarea { min-height: 140px; resize: vertical; line-height: 1.5; }
.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 0;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 18%, transparent);
}
.field-row { display: grid; gap: 1rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.field-check { display: flex; align-items: flex-start; gap: 0.55rem; font-size: 0.875rem; color: var(--fg-soft); }
.field-check input { width: 16px; height: 16px; margin-top: 0.15rem; flex: none; }
.form-status {
  padding: 0.875rem 1rem;
  border-radius: var(--r-md);
  font-size: 0.875rem;
  display: none;
}
.form-status.show { display: block; }
.form-status.success { background: color-mix(in srgb, var(--success) 12%, transparent); color: var(--success); }
.form-status.error { background: color-mix(in srgb, var(--danger) 12%, transparent); color: var(--danger); }

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-elev);
  border-top: 1px solid var(--line-soft);
  padding-block: var(--space-5) var(--space-3);
  margin-top: var(--space-6);
  color: var(--fg-mute);
  font-size: 0.8125rem;
}
.footer-grid {
  display: grid;
  gap: 2rem;
  grid-template-columns: 1.4fr repeat(4, 1fr);
}
@media (max-width: 880px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}
.footer h5 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 600;
  color: var(--fg);
  margin-bottom: 0.75rem;
}
.footer ul { list-style: none; padding: 0; }
.footer li { margin-bottom: 0.5rem; }
.footer a { color: var(--fg-mute); }
.footer a:hover { color: var(--fg); }
.footer-brand p { color: var(--fg-mute); font-size: 0.8125rem; max-width: 32ch; margin-top: 0.5rem; }
.footer-bottom {
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.75rem;
}
.footer-bottom .legal-links { display: flex; flex-wrap: wrap; gap: 1.25rem; }
.disclaimer-bar {
  background: var(--bg-soft);
  font-size: 0.75rem;
  color: var(--fg-mute);
  padding: 0.75rem 0;
  text-align: center;
  border-top: 1px solid var(--line-soft);
}

/* ============================================
   Marquee / logo strip
   ============================================ */
.trust-strip {
  padding: var(--space-4) 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  text-align: center;
}
.trust-strip p { font-size: 0.8125rem; color: var(--fg-mute); margin-bottom: 1.25rem; text-transform: uppercase; letter-spacing: 0.08em; }
.platform-icons {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1.5rem, 4vw, 3rem);
  justify-content: center;
  align-items: center;
  color: var(--fg-faint);
}
.platform-icons span {
  font-size: 0.9375rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.platform-icons svg { width: 20px; height: 20px; }

/* ============================================
   Process / steps
   ============================================ */
.process { counter-reset: step; }
.process-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}
.process-item {
  padding: var(--space-3);
  border-radius: var(--r-lg);
  background: var(--bg-soft);
  position: relative;
  counter-increment: step;
}
.process-item::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.5rem;
}
.process-item h4 { font-size: 1.0625rem; margin-bottom: 0.4rem; }
.process-item p { color: var(--fg-mute); font-size: 0.875rem; }

/* ============================================
   Stats
   ============================================ */
.stats {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}
.stat { padding: var(--space-3) 0; }
.stat-num {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.35rem;
  background: linear-gradient(135deg, var(--fg), var(--fg-mute));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.stat-label { font-size: 0.875rem; color: var(--fg-mute); }

/* ============================================
   Case studies
   ============================================ */
.case-card {
  background: var(--bg-soft);
  border-radius: var(--r-xl);
  overflow: hidden;
  position: relative;
  min-height: 340px;
  padding: var(--space-3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform var(--t-base) var(--ease-out);
}
.case-card:hover { transform: translateY(-3px); }
.case-card .tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  background: var(--bg-card);
  color: var(--fg-mute);
  border-radius: var(--r-full);
  letter-spacing: 0.04em;
  font-weight: 500;
  margin-bottom: 0.75rem;
}
.case-card h3 { font-size: var(--step-3); margin-bottom: 0.5rem; }
.case-card p { color: var(--fg-mute); font-size: 0.9375rem; }
.case-card .case-meta { font-size: 0.75rem; color: var(--fg-faint); margin-top: 1rem; text-transform: uppercase; letter-spacing: 0.08em; }

/* ============================================
   Legal pages / long-form
   ============================================ */
.legal { padding-block: var(--space-5); }
.legal h1 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  margin-bottom: 0.5rem;
  letter-spacing: -0.028em;
}
.legal .legal-meta { color: var(--fg-mute); font-size: 0.875rem; margin-bottom: 2rem; }
.legal h2 {
  font-size: 1.375rem;
  margin-top: 2.25rem;
  margin-bottom: 0.75rem;
}
.legal h3 {
  font-size: 1.0625rem;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
}
.legal p, .legal li {
  color: var(--fg-soft);
  font-size: 1rem;
  line-height: 1.65;
  margin-bottom: 0.75rem;
}
.legal ul, .legal ol { padding-left: 1.5rem; margin-bottom: 1rem; }
.legal li { margin-bottom: 0.4rem; }
.legal strong { color: var(--fg); font-weight: 600; }
.legal hr { border: 0; border-top: 1px solid var(--line-soft); margin-block: 2rem; }
.legal-toc {
  background: var(--bg-soft);
  padding: var(--space-3);
  border-radius: var(--r-lg);
  margin-bottom: 2.5rem;
}
.legal-toc h4 { font-size: 0.8125rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--fg-mute); margin-bottom: 0.75rem; }
.legal-toc ol { padding-left: 1.25rem; margin: 0; columns: 2; column-gap: 1.5rem; }
.legal-toc li { margin-bottom: 0.35rem; font-size: 0.875rem; }
.legal-toc a { color: var(--fg-soft); }
.legal-toc a:hover { color: var(--accent); }
@media (max-width: 640px) { .legal-toc ol { columns: 1; } }

.callout {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--r-md) var(--r-md) 0;
  margin-block: 1.25rem;
  font-size: 0.9375rem;
  color: var(--fg-soft);
}

/* ============================================
   Page header
   ============================================ */
.page-head {
  padding-block: clamp(2.5rem, 6vw, 5rem) var(--space-4);
  text-align: center;
}
.page-head h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
}
.page-head .lede {
  max-width: 640px;
  margin: 0 auto;
}

/* ============================================
   Visually hidden
   ============================================ */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -3rem;
  padding: 0.5rem 0.875rem;
  background: var(--fg);
  color: var(--bg);
  border-radius: var(--r-sm);
  z-index: 200;
  transition: top var(--t-fast) var(--ease-out);
}
.skip-link:focus { top: 0.5rem; color: var(--bg); }

/* ============================================
   Reveal animations
   ============================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-slow) var(--ease-out), transform var(--t-slow) var(--ease-out);
}
[data-reveal].in {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  [data-reveal] { opacity: 1; transform: none; }
  html { scroll-behavior: auto; }
}

/* ============================================
   Misc components
   ============================================ */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  background: var(--bg-soft);
  border-radius: var(--r-full);
  font-size: 0.8125rem;
  color: var(--fg-soft);
  font-weight: 500;
}
.contact-card {
  background: var(--bg-soft);
  border-radius: var(--r-lg);
  padding: var(--space-3);
}
.contact-card h3 { font-size: 1rem; margin-bottom: 0.35rem; }
.contact-card p, .contact-card a { font-size: 0.9375rem; color: var(--fg-soft); }

.faq summary {
  cursor: pointer;
  padding: 1.1rem 0;
  font-weight: 500;
  font-size: 1.0625rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--line-soft);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--fg-mute);
  font-weight: 300;
  transition: transform var(--t-fast) var(--ease-out);
}
.faq[open] summary::after { transform: rotate(45deg); }
.faq p { color: var(--fg-mute); padding: 1rem 0; line-height: 1.6; }

/* CTA banner */
.cta-banner {
  background: var(--bg-soft);
  border-radius: var(--r-xl);
  padding: clamp(2rem, 5vw, 3.5rem);
  text-align: center;
  margin-block: var(--space-5);
}
.cta-banner h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  margin-bottom: 1rem;
}
.cta-banner p { color: var(--fg-mute); max-width: 540px; margin: 0 auto 1.5rem; }

/* ============================================
   Mobile responsive (tablet → phone)
   ============================================ */

/* Tablet & smaller */
@media (max-width: 1024px) {
  :root {
    --space-7: 4.5rem;
    --space-8: 5.5rem;
  }
  .section { padding-block: var(--space-6); }
  .section-lg { padding-block: var(--space-7); }
  .grid-2 { gap: var(--space-3); }
  .platform-card { min-height: 320px; padding: clamp(1.5rem, 3vw, 2.25rem); }
  .platform-card.large { min-height: 360px; }
}

/* Phone */
@media (max-width: 720px) {
  :root {
    --nav-h: 56px;
    --space-5: 2.25rem;
    --space-6: 3rem;
    --space-7: 3.5rem;
    --space-8: 4rem;
  }

  .container,
  .container-narrow,
  .container-reading { width: min(100% - 2rem, var(--container)); }

  .section { padding-block: var(--space-5); }
  .section-sm { padding-block: var(--space-4); }
  .section-lg { padding-block: var(--space-6); }

  /* Hero spacing */
  .hero {
    padding-block: 2.5rem 2rem;
  }
  .hero h1 {
    font-size: clamp(2rem, 9vw, 3rem);
    line-height: 1.1;
  }
  .hero-eyebrow {
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
    margin-bottom: 1rem;
  }
  .hero .lede {
    font-size: 1.0625rem;
    margin-bottom: 1.5rem;
  }
  .hero-cta {
    flex-direction: column;
    gap: 0.625rem;
    align-items: stretch;
  }
  .hero-cta .btn { width: 100%; }

  /* Page head */
  .page-head { padding-block: 2.5rem 1.5rem; }
  .page-head h1 { font-size: clamp(1.875rem, 7vw, 2.5rem); }

  /* Section headings */
  h2 { font-size: clamp(1.5rem, 5vw, 2rem) !important; line-height: 1.2; }
  .lede { font-size: 1.0625rem; line-height: 1.5; }

  /* Trust strip */
  .trust-strip { padding-block: var(--space-3); }
  .platform-icons {
    gap: 1.25rem 1.5rem;
    font-size: 0.875rem;
  }
  .platform-icons span { font-size: 0.875rem; }

  /* Cards */
  .card { padding: 1.25rem; }
  .card h3 { font-size: 1.125rem; }
  .card-icon { width: 38px; height: 38px; margin-bottom: 0.75rem; }
  .card-icon svg { width: 19px; height: 19px; }

  /* Grids */
  .grid-3,
  .grid-4 { gap: 0.75rem; }
  .grid-2 { gap: 1rem; }

  /* Platform cards */
  .platform-card {
    min-height: auto;
    padding: 1.5rem;
  }
  .platform-card.large { min-height: auto; }
  .platform-card h3 { font-size: 1.5rem !important; }
  .platform-card p { font-size: 0.9375rem; }

  /* Case cards */
  .case-card {
    min-height: auto;
    padding: 1.5rem;
  }
  .case-card h3 { font-size: 1.25rem; }

  /* Process */
  .process-item { padding: 1.25rem; }
  .process-item h4 { font-size: 1rem; }
  .process-item p { font-size: 0.875rem; }

  /* Stats */
  .stats { gap: 1rem; }
  .stat { padding: 1rem 0; }
  .stat-num { font-size: clamp(1.875rem, 7vw, 2.5rem); }
  .stat-label { font-size: 0.8125rem; }

  /* CTA banner */
  .cta-banner {
    padding: 1.75rem 1.25rem;
    margin-block: var(--space-4);
  }
  .cta-banner h2 { font-size: 1.5rem !important; }
  .cta-banner p { font-size: 0.9375rem; margin-bottom: 1.25rem; }
  .cta-banner .hero-cta {
    flex-direction: column;
    align-items: stretch;
  }
  .cta-banner .hero-cta .btn { width: 100%; }

  /* FAQ */
  .faq summary { font-size: 0.9375rem; padding: 0.875rem 0; }
  .faq summary::after { font-size: 1.25rem; }

  /* Buttons */
  .btn { padding: 0.7rem 1.1rem; font-size: 0.875rem; }
  .btn-lg { padding: 0.85rem 1.4rem; font-size: 0.9375rem; }

  /* Forms */
  .field-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
  .field input,
  .field textarea,
  .field select {
    padding: 0.85rem 0.875rem;
    font-size: 16px; /* prevents iOS zoom on focus */
  }
  .form { gap: 0.875rem; }

  /* Contact aside */
  .contact-card { padding: 1.25rem; }

  /* Legal */
  .legal h1 { font-size: 1.75rem; }
  .legal h2 { font-size: 1.25rem; margin-top: 1.75rem; }
  .legal h3 { font-size: 1rem; }
  .legal p, .legal li { font-size: 0.9375rem; }
  .legal-toc { padding: 1.25rem; }
  .legal-toc ol { columns: 1; }
  .legal-meta { font-size: 0.8125rem; }

  /* Footer */
  .footer { padding-block: var(--space-4) var(--space-2); }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 1rem;
  }
  .footer-brand { grid-column: 1 / -1; }
  .footer h5 { font-size: 0.6875rem; margin-bottom: 0.5rem; }
  .footer li { margin-bottom: 0.35rem; font-size: 0.8125rem; }
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .footer-bottom .legal-links {
    gap: 0.875rem;
    flex-wrap: wrap;
  }
  .disclaimer-bar {
    padding: 0.75rem 1rem;
    font-size: 0.6875rem;
    line-height: 1.5;
  }

  /* Nav refinements */
  .nav-inner {
    width: min(100% - 1.5rem, var(--container));
  }
  .nav-actions { gap: 0.4rem; }
  .nav-actions .btn-sm {
    padding: 0.45rem 0.8rem;
    font-size: 0.8125rem;
  }
  .nav-menu {
    inset: calc(var(--nav-h) + env(safe-area-inset-top, 0px)) 0 auto 0;
    padding: 0.5rem 1rem 1rem;
    max-height: calc(100vh - var(--nav-h) - env(safe-area-inset-top, 0px));
    overflow-y: auto;
  }

  /* Cookie banner */
  [data-cookie-banner] {
    left: 0.75rem !important;
    right: 0.75rem !important;
    bottom: 0.75rem !important;
    padding: 0.875rem 1rem !important;
    font-size: 0.8125rem !important;
    gap: 0.625rem !important;
    flex-direction: column !important;
    align-items: stretch !important;
  }
  [data-cookie-banner] .btn { width: 100%; }
}

/* Small phones */
@media (max-width: 380px) {
  .container,
  .container-narrow,
  .container-reading { width: calc(100% - 1.5rem); }

  .hero h1 { font-size: clamp(1.875rem, 8vw, 2.25rem); }
  .nav-actions .btn-sm { padding: 0.4rem 0.65rem; font-size: 0.75rem; }
  .brand { font-size: 0.9375rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .platform-icons {
    gap: 0.75rem 1.25rem;
    justify-content: flex-start;
  }
  .stat-num { font-size: 1.75rem; }
}

/* Landscape phones — tighten vertical further */
@media (max-height: 480px) and (max-width: 900px) {
  .hero { padding-block: 1.5rem 1rem; }
  .page-head { padding-block: 1.5rem 0.75rem; }
  .section { padding-block: var(--space-4); }
}

/* Safe-area insets for iPhone notch / Dynamic Island */
@supports (padding: max(0px)) {
  .nav-inner,
  .footer .container {
    padding-left: max(0px, env(safe-area-inset-left));
    padding-right: max(0px, env(safe-area-inset-right));
  }
  [data-cookie-banner] {
    bottom: max(1rem, env(safe-area-inset-bottom)) !important;
  }
}