/* =============================================================================
   Sell in May — Website Design System (redesign)
   Translates the iOS/macOS app's visual language to the web.
   Faithful to the SHIPPING app: iOS system palette, blue accent,
   green/red signals, pure-black dark / white+gray light, large
   rounded cards, SF Pro type, monospace ticker.

   This stylesheet is production-ready: Claude Code can ship it as-is.
   - Light is the default. Dark applies via prefers-color-scheme OR a
     manual [data-theme="dark"] override on <html>. [data-theme="light"]
     pins light. Persist the choice in localStorage (see implementation).
   ============================================================================= */

/* ---------- 1. TOKENS ------------------------------------------------------- */
:root {
  /* Brand (icon artwork only — never a UI surface color) */
  --brand-coral:      #FF7A59;
  --brand-coral-deep: #E8633F;
  --brand-navy:       #14213D;

  /* Type families */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
               "Inter", "Segoe UI", Roboto, system-ui, sans-serif;
  --font-mono: ui-monospace, "SF Mono", "SFMono-Regular", Menlo, monospace;

  /* Type scale (web) */
  --t-hero:    clamp(2.75rem, 1.6rem + 4.6vw, 4.75rem);  /* 44 → 76 */
  --t-h1:      clamp(2rem, 1.4rem + 2.2vw, 3rem);        /* 32 → 48 */
  --t-h2:      clamp(1.6rem, 1.3rem + 1.1vw, 2.125rem);  /* 26 → 34 */
  --t-h3:      1.3125rem;   /* 21 */
  --t-lead:    clamp(1.1875rem, 1.05rem + 0.5vw, 1.5rem);
  --t-body:    1.0625rem;   /* 17 — matches app .body */
  --t-callout: 1rem;        /* 16 */
  --t-small:   0.9375rem;   /* 15 */
  --t-eyebrow: 0.8125rem;   /* 13 — uppercase section labels */
  --t-caption: 0.75rem;     /* 12 */
  --lh-body: 1.6;
  --lh-tight: 1.15;

  /* Spacing (4px base) */
  --s-1: 4px;  --s-2: 8px;  --s-3: 12px; --s-4: 16px; --s-5: 20px;
  --s-6: 24px; --s-8: 32px; --s-10: 40px; --s-12: 48px; --s-16: 64px;
  --s-20: 80px; --s-24: 96px; --s-32: 128px;

  /* Radii — mirror the app's generous rounding */
  --r-sm: 8px; --r-md: 12px; --r-cell: 16px; --r-card: 22px;
  --r-card-lg: 28px; --r-pill: 999px;

  /* Layout */
  --maxw: 1200px;
  --maxw-prose: 760px;
  --nav-h: 60px;

  /* Signal palette — identical hues across modes (light values) */
  --pos: #34C759;  --pos-bg: rgba(52,199,89,0.12);
  --neg: #FF3B30;  --neg-bg: rgba(255,59,48,0.12);
  --warn:#FF9500;  --warn-bg: rgba(255,149,0,0.12);
  --info:#007AFF;  --info-bg: rgba(0,122,255,0.12);
  --spec:#AF52DE;  --spec-bg: rgba(175,82,222,0.12);

  /* ---- LIGHT surfaces (default) ---- */
  --bg:           #FFFFFF;
  --bg-tint:      #F5F5F7;   /* alternating page band */
  --surface:      #F2F2F7;   /* card / well fill */
  --surface-2:    #FFFFFF;   /* cell inside a tinted card */
  --surface-hover:#EBEBF0;
  --separator:    rgba(60,60,67,0.16);
  --separator-2:  rgba(60,60,67,0.10);
  --fg:           #000000;
  --fg-2:         rgba(60,60,67,0.62);
  --fg-3:         rgba(60,60,67,0.40);
  --accent:       #007AFF;
  --accent-press: #0062CC;
  --accent-bg:    #EAF5FF;   /* AI banner / accent well */
  --on-accent:    #FFFFFF;
  --glass:        rgba(255,255,255,0.72);
  --shadow-card:  0 1px 2px rgba(0,0,0,0.04), 0 8px 28px rgba(0,0,0,0.06);
  --shadow-pop:   0 12px 40px rgba(0,0,0,0.12);
  --shadow-phone: 0 40px 90px rgba(0,0,0,0.22), 0 8px 24px rgba(0,0,0,0.12);
  --hero-glow: radial-gradient(60% 60% at 75% 25%, rgba(0,122,255,0.10), transparent 70%),
               radial-gradient(50% 50% at 20% 80%, rgba(255,122,89,0.08), transparent 70%);
}

/* ---- DARK surfaces ---- */
:root[data-theme="dark"] { color-scheme: dark; }
:root[data-theme="dark"],
@media (prefers-color-scheme: dark) {}
:root[data-theme="dark"] {
  --pos: #30D158;  --pos-bg: rgba(48,209,88,0.16);
  --neg: #FF453A;  --neg-bg: rgba(255,69,58,0.16);
  --warn:#FF9F0A;  --warn-bg: rgba(255,159,10,0.16);
  --info:#0A84FF;  --info-bg: rgba(10,132,255,0.16);
  --spec:#BF5AF2;  --spec-bg: rgba(191,90,242,0.16);

  --bg:           #000000;
  --bg-tint:      #0A0A0C;
  --surface:      #1C1C1E;
  --surface-2:    #2C2C2E;
  --surface-hover:#262629;
  --separator:    rgba(84,84,88,0.55);
  --separator-2:  rgba(84,84,88,0.32);
  --fg:           #FFFFFF;
  --fg-2:         rgba(235,235,245,0.60);
  --fg-3:         rgba(235,235,245,0.32);
  --accent:       #0A84FF;
  --accent-press: #409CFF;
  --accent-bg:    rgba(10,132,255,0.14);
  --on-accent:    #FFFFFF;
  --glass:        rgba(20,20,22,0.66);
  --shadow-card:  none;
  --shadow-pop:   0 16px 50px rgba(0,0,0,0.6);
  --shadow-phone: 0 50px 120px rgba(0,0,0,0.75), 0 0 0 1px rgba(255,255,255,0.04);
  --hero-glow: radial-gradient(55% 55% at 78% 18%, rgba(10,132,255,0.20), transparent 70%),
               radial-gradient(50% 50% at 12% 85%, rgba(255,122,89,0.14), transparent 70%);
}

/* Auto (no explicit data-theme): follow the OS */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    color-scheme: dark;
    --pos:#30D158; --pos-bg:rgba(48,209,88,0.16);
    --neg:#FF453A; --neg-bg:rgba(255,69,58,0.16);
    --warn:#FF9F0A; --warn-bg:rgba(255,159,10,0.16);
    --info:#0A84FF; --info-bg:rgba(10,132,255,0.16);
    --spec:#BF5AF2; --spec-bg:rgba(191,90,242,0.16);
    --bg:#000000; --bg-tint:#0A0A0C; --surface:#1C1C1E; --surface-2:#2C2C2E;
    --surface-hover:#262629; --separator:rgba(84,84,88,0.55);
    --separator-2:rgba(84,84,88,0.32); --fg:#FFFFFF;
    --fg-2:rgba(235,235,245,0.60); --fg-3:rgba(235,235,245,0.32);
    --accent:#0A84FF; --accent-press:#409CFF; --accent-bg:rgba(10,132,255,0.14);
    --glass:rgba(20,20,22,0.66); --shadow-card:none;
    --shadow-pop:0 16px 50px rgba(0,0,0,0.6);
    --shadow-phone:0 50px 120px rgba(0,0,0,0.75), 0 0 0 1px rgba(255,255,255,0.04);
    --hero-glow: radial-gradient(55% 55% at 78% 18%, rgba(10,132,255,0.20), transparent 70%),
                 radial-gradient(50% 50% at 12% 85%, rgba(255,122,89,0.14), transparent 70%);
  }
}

/* ---------- 2. BASE -------------------------------------------------------- */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: var(--t-body);
  line-height: var(--lh-body);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background 0.3s ease, color 0.3s ease;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: var(--on-accent); }

.wrap { max-width: var(--maxw); margin: 0 auto; padding-inline: clamp(20px, 5vw, 40px); }
.prose-wrap { max-width: var(--maxw-prose); margin: 0 auto; padding-inline: clamp(20px, 5vw, 40px); }
.section { padding-block: clamp(56px, 8vw, 112px); }
.section--tint { background: var(--bg-tint); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.eyebrow {
  font-size: var(--t-eyebrow); font-weight: 600; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--fg-2);
}
.text-2 { color: var(--fg-2); }
.pos { color: var(--pos); } .neg { color: var(--neg); }
.warn { color: var(--warn); } .accent-fg { color: var(--accent); }

/* ---------- 3. TYPOGRAPHIC ROLES ------------------------------------------ */
h1,h2,h3,h4 { line-height: var(--lh-tight); letter-spacing: -0.02em; font-weight: 700; }
.hero-title { font-size: var(--t-hero); letter-spacing: -0.035em; }
.h1 { font-size: var(--t-h1); }
.h2 { font-size: var(--t-h2); }
.h3 { font-size: var(--t-h3); font-weight: 600; letter-spacing: -0.01em; }
.lead { font-size: var(--t-lead); line-height: 1.45; color: var(--fg-2); font-weight: 400; }

/* ---------- 4. NAV --------------------------------------------------------- */
.nav {
  position: sticky; top: 0; z-index: 50; height: var(--nav-h);
  display: flex; align-items: center;
  background: var(--glass);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--separator-2);
}
.nav__inner { display: flex; align-items: center; gap: var(--s-5); width: 100%;
  max-width: var(--maxw); margin: 0 auto; padding-inline: clamp(20px, 5vw, 40px); }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700;
  font-size: 1.0625rem; letter-spacing: -0.01em; color: var(--fg); }
.brand:hover { text-decoration: none; }
.brand img { width: 28px; height: 28px; border-radius: 7px; }
.nav__links { display: flex; align-items: center; gap: var(--s-5); margin-left: auto; }
.nav__links a { color: var(--fg-2); font-size: var(--t-small); font-weight: 500; }
.nav__links a:hover { color: var(--fg); text-decoration: none; }
.nav__tools { display: flex; align-items: center; gap: var(--s-3); }

/* theme + lang controls */
.icon-btn {
  width: 36px; height: 36px; border-radius: var(--r-pill); border: 1px solid var(--separator);
  background: var(--surface); color: var(--fg); cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center;
}
.icon-btn:hover { background: var(--surface-hover); }
.icon-btn svg { width: 18px; height: 18px; }

/* ---------- 5. BUTTONS ----------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; justify-content: center;
  font: inherit; font-weight: 600; font-size: var(--t-callout); cursor: pointer;
  padding: 12px 20px; border-radius: var(--r-pill); border: 1px solid transparent;
  transition: background 0.18s ease, transform 0.08s ease, border-color 0.18s;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: scale(0.98); }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: var(--accent-press); }
.btn--ghost { background: var(--surface); color: var(--fg); border-color: var(--separator); }
.btn--ghost:hover { background: var(--surface-hover); }
.btn svg { width: 18px; height: 18px; }
.appstore-badge img { height: 52px; width: auto; }

/* ---------- 6. PILLS / BADGES --------------------------------------------- */
.pill {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px;
  border-radius: var(--r-pill); font-size: var(--t-eyebrow); font-weight: 600;
  background: var(--surface); color: var(--fg); border: 1px solid var(--separator);
}
.pill svg { width: 14px; height: 14px; }
.pill--pos { background: var(--pos-bg); color: var(--pos); border-color: transparent; }
.pill--neg { background: var(--neg-bg); color: var(--neg); border-color: transparent; }
.pill--warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.pill--info { background: var(--info-bg); color: var(--info); border-color: transparent; }
.pill--spec { background: var(--spec-bg); color: var(--spec); border-color: transparent; }

/* ---------- 7. CARD + FEATURE GRID ---------------------------------------- */
.card {
  background: var(--surface); border-radius: var(--r-card);
  padding: var(--s-6); box-shadow: var(--shadow-card);
  border: 1px solid var(--separator-2);
}
:root[data-theme="dark"] .card { border-color: transparent; }
.grid { display: grid; gap: var(--s-5); }
.grid--features { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }

.feature {
  background: var(--surface); border-radius: var(--r-card); padding: var(--s-6);
  border: 1px solid var(--separator-2); box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
:root[data-theme="dark"] .feature { border-color: transparent; }
.feature:hover { transform: translateY(-4px); box-shadow: var(--shadow-pop); }
.feature__icon {
  width: 44px; height: 44px; border-radius: var(--r-md); margin-bottom: var(--s-4);
  display: grid; place-items: center; background: var(--info-bg); color: var(--accent);
}
.feature__icon svg { width: 22px; height: 22px; }
.feature__icon.is-pos { background: var(--pos-bg); color: var(--pos); }
.feature__icon.is-neg { background: var(--neg-bg); color: var(--neg); }
.feature__icon.is-warn { background: var(--warn-bg); color: var(--warn); }
.feature__icon.is-spec { background: var(--spec-bg); color: var(--spec); }
.feature h3 { font-size: var(--t-h3); font-weight: 600; margin-bottom: 8px; letter-spacing: -0.01em; }
.feature p { color: var(--fg-2); font-size: var(--t-callout); }

/* pillars */
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-6); }
.pillar__k { font-size: 2.5rem; font-weight: 700; letter-spacing: -0.03em; }
.pillar h3 { font-size: var(--t-h3); margin: 6px 0; }
.pillar p { color: var(--fg-2); font-size: var(--t-callout); }

/* ---------- 8. HERO -------------------------------------------------------- */
.hero { position: relative; overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: 0; background: var(--hero-glow); pointer-events: none; }
.hero__inner {
  position: relative; display: grid; grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(32px, 5vw, 72px); align-items: center;
  padding-block: clamp(48px, 7vw, 104px);
}
.hero__copy { max-width: 560px; }
.hero__title { margin: var(--s-4) 0; }
.hero__cta { display: flex; align-items: center; gap: var(--s-4); flex-wrap: wrap; margin-top: var(--s-8); }
.hero__note { display: flex; align-items: center; gap: 8px; margin-top: var(--s-5); color: var(--fg-2); font-size: var(--t-small); }
.hero__note svg { width: 16px; height: 16px; color: var(--pos); }
.hero__art { display: grid; place-items: center; }

/* phone mockup */
.phone {
  position: relative; width: clamp(240px, 26vw, 320px); aspect-ratio: 1206 / 2622;
  border-radius: 46px; padding: 11px; background: #0b0b0d;
  box-shadow: var(--shadow-phone);
}
:root[data-theme="light"] .phone,
:root:not([data-theme="dark"]) .phone { background: #1a1a1c; }
.phone__screen { width: 100%; height: 100%; border-radius: 36px; overflow: hidden; background: var(--bg); }
.phone__screen img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.phone__notch {
  position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  width: 34%; height: 26px; background: #000; border-radius: 0 0 16px 16px; z-index: 2;
}
/* show the screenshot that matches the active theme */
.app-shot--light { display: block; }
.app-shot--dark  { display: none; }
:root[data-theme="dark"] .app-shot--light { display: none; }
:root[data-theme="dark"] .app-shot--dark  { display: block; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .app-shot--light { display: none; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .app-shot--dark  { display: block; }
}

/* ---------- 9. TICKER TAPE (brand motif from app) ------------------------- */
.ticker {
  display: flex; align-items: center; height: 40px; overflow: hidden;
  border-block: 1px solid var(--separator-2); background: var(--surface);
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
          mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.ticker__track { display: flex; gap: var(--s-6); white-space: nowrap; padding-left: var(--s-6);
  animation: ticker 48s linear infinite; }
@keyframes ticker { to { transform: translateX(-50%); } }
.ticker__item { display: inline-flex; align-items: baseline; gap: 7px; font-family: var(--font-mono); font-size: 0.8125rem; }
.ticker__item .s { color: var(--fg-2); font-weight: 600; }
.ticker__item .p { color: var(--fg); }
@media (prefers-reduced-motion: reduce) { .ticker__track { animation: none; } }

/* ---------- 10. PRIVACY BANNER -------------------------------------------- */
.privacy-banner {
  display: flex; gap: var(--s-5); align-items: center;
  background: var(--pos-bg); border: 1px solid color-mix(in srgb, var(--pos) 30%, transparent);
  border-radius: var(--r-card-lg); padding: clamp(24px, 4vw, 40px);
}
.privacy-banner__icon { flex: 0 0 auto; width: 56px; height: 56px; border-radius: var(--r-cell);
  background: var(--pos); color: #fff; display: grid; place-items: center; }
.privacy-banner__icon svg { width: 30px; height: 30px; }
.privacy-banner h3 { font-size: var(--t-h3); color: var(--pos); margin-bottom: 4px; }
.privacy-banner p { color: var(--fg-2); }

/* ---------- 11. DOWNLOAD --------------------------------------------------- */
.download {
  display: grid; grid-template-columns: 1fr auto; gap: var(--s-10); align-items: center;
  background: var(--surface); border-radius: var(--r-card-lg); padding: clamp(28px, 5vw, 56px);
  border: 1px solid var(--separator-2);
}
:root[data-theme="dark"] .download { border-color: transparent; }
.qr { text-align: center; }
.qr img { width: 148px; height: 148px; border-radius: var(--r-md); background: #fff; padding: 10px; }
.qr p { font-size: var(--t-caption); color: var(--fg-2); margin-top: 8px; }

/* ---------- 11b. FAMILY CROSS-PROMO --------------------------------------- */
.crosspromo {
  display: flex; align-items: center; gap: clamp(20px, 3vw, 40px);
  background: linear-gradient(135deg, #1E3C72 0%, #2A5298 100%);
  border-radius: var(--r-card-lg); padding: clamp(28px, 4vw, 44px);
  color: #fff; box-shadow: var(--shadow-pop);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.crosspromo:hover { text-decoration: none; transform: translateY(-4px); box-shadow: var(--shadow-phone); }
.crosspromo__icon {
  flex: 0 0 auto; width: 76px; height: 76px; border-radius: var(--r-cell);
  background: rgba(255,255,255,0.12); border: 1px solid rgba(255,255,255,0.18);
  display: grid; place-items: center; color: #fff;
}
.crosspromo__icon svg { width: 38px; height: 38px; }
.crosspromo__body { flex: 1 1 auto; min-width: 0; }
.crosspromo__eyebrow {
  display: block; font-size: var(--t-eyebrow); font-weight: 600;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(255,255,255,0.60); font-family: var(--font-mono);
}
.crosspromo__title {
  font-size: var(--t-h3); font-weight: 700; margin: 10px 0 10px;
  color: #fff; letter-spacing: -0.01em;
}
.crosspromo__title em { font-style: italic; font-weight: 600; }
.crosspromo__desc { color: rgba(255,255,255,0.80); font-size: var(--t-callout); max-width: 58ch; margin: 0; }
.crosspromo__cta {
  flex: 0 0 auto; display: inline-flex; align-items: center; gap: 8px;
  background: #fff; color: #14213D; font-weight: 600; font-size: var(--t-callout);
  padding: 13px 24px; border-radius: var(--r-pill); white-space: nowrap;
  transition: background 0.18s ease, transform 0.08s ease;
}
.crosspromo:hover .crosspromo__cta { background: rgba(255,255,255,0.88); }
.crosspromo__cta svg { width: 18px; height: 18px; }

@media (max-width: 820px) {
  .crosspromo { flex-wrap: wrap; }
  .crosspromo__body { flex-basis: calc(100% - 116px); }
  .crosspromo__cta { width: 100%; justify-content: center; margin-top: var(--s-2); }
}

/* ---------- 12. FOOTER ----------------------------------------------------- */
.footer { border-top: 1px solid var(--separator-2); padding-block: var(--s-12) var(--s-10); }
.footer__top { display: flex; flex-wrap: wrap; gap: var(--s-6); align-items: center; justify-content: space-between; }
.footer__links { display: flex; flex-wrap: wrap; gap: var(--s-5); }
.footer__links a { color: var(--fg-2); font-size: var(--t-small); }
.footer__links a:hover { color: var(--fg); }
.footer__disclaimer { color: var(--fg-3); font-size: var(--t-caption); margin-top: var(--s-6); max-width: 720px; }

/* ---------- 13. DOC / LONG-FORM PAGES ------------------------------------- */
.page-head { padding-block: clamp(40px, 6vw, 72px) var(--s-8); }
.doc-layout { display: grid; grid-template-columns: 240px minmax(0,1fr); gap: clamp(28px, 5vw, 56px);
  align-items: start; padding-bottom: var(--s-24); }
.toc { position: sticky; top: calc(var(--nav-h) + 20px); font-size: var(--t-small); }
.toc h4 { font-size: var(--t-eyebrow); text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--fg-2); margin-bottom: var(--s-3); }
.toc ul { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.toc a { display: block; color: var(--fg-2); padding: 6px 12px; border-radius: var(--r-sm);
  border-left: 2px solid transparent; }
.toc a:hover { color: var(--fg); background: var(--surface); text-decoration: none; }
.toc a.is-active { color: var(--accent); border-left-color: var(--accent); }

.prose { font-size: var(--t-body); }
.prose > section { scroll-margin-top: calc(var(--nav-h) + 24px); }
.prose h2 { font-size: var(--t-h2); margin: var(--s-12) 0 var(--s-4); padding-top: var(--s-2); }
.prose section:first-child h2 { margin-top: 0; }
.prose h3 { font-size: var(--t-h3); font-weight: 600; margin: var(--s-6) 0 var(--s-3); }
.prose p { margin-bottom: var(--s-4); color: var(--fg); }
.prose ul, .prose ol { margin: 0 0 var(--s-4) var(--s-5); }
.prose li { margin-bottom: 6px; color: var(--fg); }
.prose li::marker { color: var(--fg-3); }
.prose strong { font-weight: 600; }
.prose a { font-weight: 500; }

/* check-bullet list */
.check-list { list-style: none; margin-left: 0 !important; }
.check-list li { position: relative; padding-left: 30px; }
.check-list li::before {
  content: ""; position: absolute; left: 0; top: 4px; width: 18px; height: 18px;
  border-radius: var(--r-pill); background: var(--pos-bg);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2334C759' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: center;
}

/* callouts — map old colored boxes to signal system */
.callout { border-radius: var(--r-cell); padding: var(--s-4) var(--s-5); margin: var(--s-5) 0;
  border-left: 3px solid var(--accent); background: var(--info-bg); }
.callout h4 { font-size: var(--t-callout); font-weight: 600; margin-bottom: 4px; }
.callout p:last-child { margin-bottom: 0; }
.callout--tip, .callout--success { border-color: var(--pos); background: var(--pos-bg); }
.callout--warn { border-color: var(--warn); background: var(--warn-bg); }
.callout--info { border-color: var(--info); background: var(--info-bg); }
.example {
  font-family: var(--font-mono); font-size: var(--t-small); background: var(--surface);
  border: 1px solid var(--separator-2); border-radius: var(--r-md);
  padding: var(--s-4) var(--s-5); margin: var(--s-5) 0; line-height: 1.7;
}

/* FAQ accordion */
.faq { border-top: 1px solid var(--separator-2); }
.faq__item { border-bottom: 1px solid var(--separator-2); }
.faq__q { width: 100%; text-align: left; background: none; border: none; cursor: pointer;
  font: inherit; font-weight: 600; color: var(--fg); padding: var(--s-5) 0;
  display: flex; align-items: center; gap: var(--s-4); }
.faq__q .chev { margin-left: auto; color: var(--fg-3); transition: transform 0.2s ease; flex: 0 0 auto; }
.faq__item[open] .chev { transform: rotate(180deg); }
.faq__a { padding-bottom: var(--s-5); color: var(--fg-2); }
details.faq__item summary { list-style: none; }
details.faq__item summary::-webkit-details-marker { display: none; }

/* ---------- 14. RESPONSIVE ------------------------------------------------- */
@media (max-width: 980px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__art { order: -1; }
  .pillars, .grid--3 { grid-template-columns: 1fr; }
  .doc-layout { grid-template-columns: 1fr; }
  .toc { position: static; order: -1; background: var(--surface); border-radius: var(--r-card); padding: var(--s-5); }
  .download { grid-template-columns: 1fr; text-align: center; }
  .qr { margin-inline: auto; }
}
@media (max-width: 640px) {
  .nav__links { display: none; }
  .grid--features, .grid--2 { grid-template-columns: 1fr; }
  .privacy-banner { flex-direction: column; text-align: center; }
}
