/* ==========================================================================
   apps.codeflight.llc — design pass 2
   Direction: an Apple product page for a one-person studio, at night.
   Pure black ground in dark mode (the OLED look), navy-tinted paper in light.
   One accent, derived from the logo's blue. The app's own teal and amber
   appear only inside PointCompass material.
   ========================================================================== */

:root {
  color-scheme: dark;

  --bg: #000000;
  --band: #0b0d12;
  --card: #15181f;
  --card-2: #1f232c;
  --bezel: #0b0d11;            /* compass bezel: darker than the face, as in the app */
  --line: rgb(255 255 255 / .10);
  --line-strong: rgb(255 255 255 / .18);

  --fg: #f5f5f7;
  --fg-2: #a1a6b0;
  --fg-3: #6e7480;

  --accent: #5b8def;
  --accent-hover: #74a0f3;
  --accent-ink: #06122a;
  --accent-wash: rgb(91 141 239 / .14);

  --teal: #30d5c8;
  --teal-wash: rgb(48 213 200 / .14);
  --amber: #f5a623;
  --amber-wash: rgb(245 166 35 / .14);

  --shadow: 0 30px 70px -30px rgb(0 0 0 / .9);
  --shadow-soft: 0 10px 30px -18px rgb(0 0 0 / .8);

  --r-sm: 10px;
  --r: 16px;
  --r-lg: 24px;

  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display", "Helvetica Neue",
          "Segoe UI", Roboto, Arial, sans-serif;

  --t-display: clamp(2.9rem, 1.9rem + 4.4vw, 5.75rem);
  --t-h2: clamp(2rem, 1.4rem + 2.4vw, 3.25rem);
  --t-h3: clamp(1.25rem, 1.15rem + .5vw, 1.5rem);
  --t-lede: clamp(1.1875rem, 1.05rem + .6vw, 1.4375rem);
  --t-body: 1.0625rem;
  --t-small: .9375rem;
  --t-label: .8125rem;

  --c-max: 1040px;
  --gutter: clamp(20px, 5vw, 40px);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    color-scheme: light;
    --bg: #ffffff;
    --band: #f4f6fa;
    --card: #ffffff;
    --card-2: #eef2f8;
    --bezel: #e6ebf3;
    --line: rgb(29 61 117 / .13);
    --line-strong: rgb(29 61 117 / .24);
    --fg: #1d1d1f;
    --fg-2: #55606f;
    --fg-3: #7c8695;
    --accent: #2a5bb8;
    --accent-hover: #1d4a9e;
    --accent-ink: #ffffff;
    --accent-wash: rgb(42 91 184 / .10);
    --teal: #0f9e94;
    --teal-wash: rgb(15 158 148 / .12);
    --amber: #c27a0a;
    --amber-wash: rgb(194 122 10 / .12);
    --shadow: 0 30px 70px -34px rgb(29 61 117 / .35);
    --shadow-soft: 0 10px 30px -20px rgb(29 61 117 / .3);
  }
}
:root[data-theme="light"] {
  color-scheme: light;
  --bg: #ffffff;
  --band: #f4f6fa;
  --card: #ffffff;
  --card-2: #eef2f8;
  --bezel: #e6ebf3;
  --line: rgb(29 61 117 / .13);
  --line-strong: rgb(29 61 117 / .24);
  --fg: #1d1d1f;
  --fg-2: #55606f;
  --fg-3: #7c8695;
  --accent: #2a5bb8;
  --accent-hover: #1d4a9e;
  --accent-ink: #ffffff;
  --accent-wash: rgb(42 91 184 / .10);
  --teal: #0f9e94;
  --teal-wash: rgb(15 158 148 / .12);
  --amber: #c27a0a;
  --amber-wash: rgb(194 122 10 / .12);
  --shadow: 0 30px 70px -34px rgb(29 61 117 / .35);
  --shadow-soft: 0 10px 30px -20px rgb(29 61 117 / .3);
}

/* ---------- reset-ish ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: var(--t-body);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
main { flex: 1; }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }
button { font: inherit; color: inherit; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3 { font-weight: 700; letter-spacing: -.03em; text-wrap: balance; }
h1 { font-size: var(--t-display); line-height: 1.02; letter-spacing: -.038em; }
h2 { font-size: var(--t-h2); line-height: 1.06; }
h3 { font-size: var(--t-h3); line-height: 1.2; letter-spacing: -.02em; font-weight: 650; }
.num { font-variant-numeric: tabular-nums; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ---------- layout primitives ---------- */
.c { width: 100%; max-width: var(--c-max); margin-inline: auto; padding-inline: var(--gutter); }
.c--narrow { max-width: 720px; }
.band { background: var(--band); }
.section { padding-block: clamp(4rem, 9vw, 7.5rem); }
.section--sm { padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.label {
  font-size: var(--t-label);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.label--accent { color: var(--accent); }
.label--teal { color: var(--teal); }
.lede { font-size: var(--t-lede); line-height: 1.45; color: var(--fg-2); max-width: 36em; }
.muted { color: var(--fg-2); }
.small { font-size: var(--t-small); }
.stack > * + * { margin-top: var(--gap, 1rem); }
.two {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
}
@media (min-width: 820px) { .two { grid-template-columns: 1fr 1fr; align-items: start; } }

/* ---------- header ---------- */
.hdr {
  position: sticky;
  top: env(safe-area-inset-top, 0px);
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--line);
}
.hdr__bar { display: flex; align-items: center; gap: .5rem; height: 56px; }
.brand { display: inline-flex; align-items: center; gap: .55rem; color: var(--fg); margin-right: auto; }
.brand:hover { color: var(--fg); }
.brand img { height: 26px; width: auto; }
.brand__name { font-weight: 650; font-size: 1.0625rem; letter-spacing: -.015em; }
.brand__tag {
  font-size: .75rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  color: var(--fg-3); padding-left: .55rem; border-left: 1px solid var(--line-strong);
}
.hdr__nav { display: none; align-items: center; gap: .1rem; }
@media (min-width: 720px) { .hdr__nav { display: flex; } }
.hdr__nav a, .hdr__btn {
  background: none; border: 0; cursor: pointer;
  font-size: .9375rem; color: var(--fg-2); padding: .45rem .7rem; border-radius: 999px;
}
.hdr__nav a:hover, .hdr__btn:hover { color: var(--fg); background: var(--card); }
.hdr__nav a[aria-current="page"] { color: var(--fg); }
.hdr__btn[aria-expanded="true"] { color: var(--fg); background: var(--card); }
.hdr__btn--apps { display: inline-flex; align-items: center; gap: .35rem; }
.hdr__btn--apps::after {
  content: ""; width: .4em; height: .4em; margin-top: -.2em;
  border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg); transition: transform .2s ease;
}
.hdr__btn--apps[aria-expanded="true"]::after { transform: rotate(-135deg); margin-top: .2em; }
.hdr__btn--menu { display: inline-flex; }
@media (min-width: 720px) { .hdr__btn--menu { display: none; } }
.hdr__btn--icon { width: 36px; height: 36px; display: inline-grid; place-items: center; padding: 0; }
.hdr__btn--icon svg { width: 16px; height: 16px; fill: currentColor; }
.i-sun { display: none; }
:root[data-theme="dark"] .i-sun { display: block; }
:root[data-theme="dark"] .i-moon { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .i-sun { display: block; }
  :root:not([data-theme="light"]) .i-moon { display: none; }
}

/* apps popover: anchored under the nav on desktop, a full-width sheet on phones.
   Positioned absolutely, so opening it never moves the page. */
.hdr__bar { position: relative; }
.pop[hidden] { display: none; }
.pop {
  position: absolute; top: calc(100% + 4px); right: var(--gutter); z-index: 55;
  width: 320px; padding: .4rem;
  display: grid; gap: 2px;
  background: var(--card); border: 1px solid var(--line-strong); border-radius: 14px;
  box-shadow: var(--shadow);
}
.pop__app {
  display: grid; grid-template-columns: 40px 1fr; gap: .75rem; align-items: center;
  padding: .5rem .6rem; border-radius: 10px; color: var(--fg);
}
.pop__app:hover { background: var(--card-2); color: var(--fg); }
.pop__app img, .pop__app .ph { width: 40px; height: 40px; border-radius: 9px; }
.pop__app b { display: block; font-weight: 600; font-size: .9375rem; }
.pop__app span span { display: block; font-size: .78rem; color: var(--fg-3); }
.pop hr { border: 0; border-top: 1px solid var(--line); margin: .3rem .4rem; }
.pop__link { display: block; padding: .5rem .6rem; border-radius: 10px; color: var(--fg-2); font-size: .9375rem; }
.pop__link:hover { background: var(--card-2); color: var(--fg); }
.pop__mobile { display: none; }
@media (max-width: 719px) {
  .pop {
    left: 0; right: 0; top: 100%; width: auto;
    padding: .6rem .8rem 1rem;
    border-radius: 0 0 var(--r-lg) var(--r-lg); border-top: 0;
  }
  .pop__mobile { display: block; }
}
.scrim[hidden] { display: none; }
.scrim {
  position: fixed; inset: 0; z-index: 45;
  background: rgb(0 0 0 / .45);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
}
@media (min-width: 720px) { .scrim { display: none; } }
.ph { width: 44px; height: 44px; border-radius: 10px; }
.panel__app b { display: block; font-weight: 600; }
.panel__app span { display: block; font-size: .8125rem; color: var(--fg-3); }
.panel__links { display: grid; gap: .25rem; }
.panel__links a { padding: .5rem .6rem; border-radius: var(--r-sm); color: var(--fg-2); }
.panel__links a:hover { background: var(--card); color: var(--fg); }
@media (min-width: 720px) { .panel__links--dup { display: none; } }
.ph {
  display: grid; place-items: center; background: var(--card-2); border: 1px dashed var(--line-strong);
  color: var(--fg-3); font-size: .625rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase;
  text-align: center; line-height: 1.2;
}

/* logo swap */
.on-dark { display: block; }
.on-light { display: none; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .on-dark { display: none; }
  :root:not([data-theme="dark"]) .on-light { display: block; }
}
:root[data-theme="light"] .on-dark { display: none; }
:root[data-theme="light"] .on-light { display: block; }

/* ---------- buttons, pills, badge ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 46px; padding: .6rem 1.25rem; border-radius: 999px;
  font-weight: 600; font-size: .9375rem; cursor: pointer;
  border: 1px solid var(--line-strong); background: transparent; color: var(--fg);
  transition: background .15s, border-color .15s, transform .15s;
}
.btn:hover { background: var(--card); color: var(--fg); border-color: var(--fg-3); }
.btn--primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn--primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); color: var(--accent-ink); }
.btn--teal { background: var(--teal); border-color: var(--teal); color: #04211f; }
.btn--teal:hover { background: var(--teal); border-color: var(--teal); color: #04211f; filter: brightness(1.06); }
.btn[aria-disabled="true"] { opacity: .55; cursor: not-allowed; }

.pill {
  display: inline-flex; align-items: center; gap: .4rem;
  font-size: .75rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase;
  padding: .3rem .65rem; border-radius: 999px; white-space: nowrap;
}
.pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.pill--live { color: var(--teal); background: var(--teal-wash); }
.pill--beta { color: var(--amber); background: var(--amber-wash); }
.pill--dev { color: var(--fg-3); background: var(--card-2); }

/* Placeholder for Apple's official App Store badge — see README. */
.store {
  display: inline-flex; align-items: center; gap: .75rem;
  min-height: 52px; padding: .5rem 1.25rem; border-radius: 12px;
  background: var(--fg); color: var(--bg); cursor: not-allowed; opacity: .55;
}
.store__glyph { font-size: 1.75rem; line-height: 1; }
.store b { display: block; font-size: 1rem; font-weight: 600; line-height: 1.1; }
.store span { display: block; font-size: .6875rem; letter-spacing: .02em; opacity: .8; }
/* Live badge: Apple's artwork, no chrome of our own. Min height 40px per Apple's guidelines. */
.store--live { padding: 0; min-height: 0; border-radius: 0; background: none; opacity: 1; cursor: pointer; }
.store--live img { display: block; height: 52px; width: auto; }
.store--live:hover { opacity: .88; }

/* ---------- home hero ---------- */
.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(5rem, 13vw, 10rem) clamp(4rem, 9vw, 7rem);
  overflow: hidden;
}
.hero__sky {
  position: absolute; inset: 0; z-index: -1; width: 100%; height: 100%;
  pointer-events: none;
}
.on-light-hidden { display: block; }
@media (prefers-color-scheme: light) { :root:not([data-theme="dark"]) .on-light-hidden { display: none; } }
:root[data-theme="light"] .on-light-hidden { display: none; }
.hero__grid { display: grid; gap: clamp(1.5rem, 3vw, 2.25rem); }
.hero__grid > * { max-width: 760px; }
.hero h1 { max-width: 12ch; }
.hero .lede { max-width: 34em; }
.hero__foot { display: flex; flex-wrap: wrap; gap: .75rem 2rem; color: var(--fg-3); font-size: var(--t-small); }

/* ---------- app list (rows, not tiles) ---------- */
.list { display: grid; gap: .5rem; }
.row {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr) auto;
  gap: 1.1rem;
  align-items: center;
  padding: 1.1rem 1.25rem 1.1rem 1.1rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r);
  color: var(--fg);
  transition: transform .18s ease, border-color .18s ease, background .18s ease;
}
a.row:hover { color: var(--fg); transform: translateY(-2px); border-color: var(--line-strong); background: var(--card-2); }
.row__icon, .row .ph { width: 64px; height: 64px; border-radius: 15px; }
.row__body { display: grid; gap: .3rem; min-width: 0; }
.row__title { display: flex; flex-wrap: wrap; align-items: center; gap: .6rem; }
.row__title h3 { font-size: 1.25rem; }
.row__body p { color: var(--fg-2); font-size: var(--t-small); line-height: 1.45; }
.row__go {
  width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center;
  color: var(--fg-3); background: var(--card-2); transition: background .15s, color .15s;
}
.row__go svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
a.row:hover .row__go { background: var(--accent); color: var(--accent-ink); }
.row--dim { background: transparent; border-style: dashed; }
.row--dim h3 { color: var(--fg-2); }
.list__sub { margin-block: 2.25rem .9rem; display: flex; align-items: baseline; gap: 1rem; }
.list__sub p { color: var(--fg-3); font-size: var(--t-small); }
@media (max-width: 480px) {
  .row { grid-template-columns: 52px minmax(0, 1fr); padding: 1rem; }
  .row__icon, .row .ph { width: 52px; height: 52px; border-radius: 12px; }
  .row__go { display: none; }
}

/* ---------- values / about ---------- */
.values { display: grid; gap: 2rem; }
@media (min-width: 720px) { .values { grid-template-columns: 1fr 1fr; gap: 3rem; } }
.value { display: grid; gap: .5rem; max-width: 30em; }
.value h3 { font-size: 1.375rem; }
.value p { color: var(--fg-2); }
.about { display: grid; gap: 1.25rem; }
@media (min-width: 820px) { .about { grid-template-columns: 220px 1fr; gap: 3rem; align-items: start; } }
.about .about__text { font-size: var(--t-lede); line-height: 1.45; color: var(--fg); max-width: 30em; }
.about .about__text em { font-style: normal; color: var(--fg-2); }

/* ---------- app page hero ---------- */
.apphero {
  display: grid;
  gap: clamp(2.5rem, 6vw, 4rem);
  padding-block: clamp(3rem, 8vw, 6rem) clamp(3rem, 7vw, 5rem);
  align-items: start;
}
@media (min-width: 900px) { .apphero { grid-template-columns: minmax(0, 6fr) minmax(0, 5fr); } }
.apphero__id { display: grid; grid-template-columns: auto 1fr; gap: 1.1rem; align-items: center; }
.apphero__icon { width: clamp(72px, 12vw, 96px); border-radius: 22%; box-shadow: var(--shadow-soft); }
.apphero__id h1 { font-size: clamp(2.4rem, 1.6rem + 3.4vw, 3.5rem); }
.apphero__tag { font-size: clamp(1.25rem, 1.05rem + .8vw, 1.375rem); font-weight: 600; letter-spacing: -.02em; line-height: 1.15; margin-top: .25rem; }
.apphero__tag--teal { color: var(--teal); }
.apphero__tag--accent { color: var(--accent); }
.apphero .lede { margin-top: 1.5rem; font-size: clamp(1.1875rem, 1.05rem + .6vw, 1.25rem); max-width: 30em; }
.apphero__actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; margin-top: 1.75rem; }
.apphero__meta { display: flex; flex-wrap: wrap; gap: .4rem 1.5rem; margin-top: 1.25rem; color: var(--fg-3); font-size: var(--t-small); }
.apphero__vis { justify-self: center; width: min(100%, 360px); }

/* compass illustration — the app screen as one card: readout, dial, reciprocal; geometry mirrors the Classic dial */
.appshot { display: grid; }
.appshot__card { background: var(--card); border: 1px solid var(--line); border-radius: 26px; overflow: hidden; }
.compass { width: 100%; aspect-ratio: 400 / 498; display: block; }
.compass .heading { fill: var(--fg); font-size: 40px; font-weight: 600; letter-spacing: -.02em; font-variant-numeric: tabular-nums; }
.compass .heading__card { fill: var(--teal); }
.compass .contour { fill: none; stroke: var(--fg); stroke-width: 1; opacity: .045; }
.compass .bezel { fill: var(--bezel); }
.compass .face { fill: url(#face-grad); }
.compass .face-stop--in { stop-color: color-mix(in srgb, var(--card) 70%, var(--card-2)); }
.compass .face-stop--out { stop-color: var(--card); }
.compass .ring { fill: none; stroke: var(--line-strong); stroke-width: 1.25; }
.compass .ring--faint { stroke: var(--line); stroke-width: 1; }
.compass .tick { stroke: var(--fg-3); stroke-width: 1; opacity: .8; }
.compass .tick--major { stroke: var(--fg); stroke-width: 3; stroke-linecap: round; opacity: .8; }
.compass .tick--n { stroke: var(--amber); stroke-width: 4.5; stroke-linecap: round; opacity: 1; }
.compass .deg { fill: var(--fg-2); font-size: 12px; font-weight: 600; letter-spacing: .02em; }
.compass .deg--zero { font-size: 8.5px; fill: var(--fg-3); }
.compass .card { fill: var(--fg); font-size: 26px; font-weight: 700; opacity: .88; }
.compass .card--n { fill: var(--amber); opacity: 1; }
.compass .hub-ring { fill: none; stroke: var(--line-strong); stroke-width: 1; }
.compass .hub-dot { fill: var(--teal); }
.compass .hub-glow { fill: var(--teal); opacity: .22; }
.compass .hub { fill: var(--teal); }
.compass .hub-lens { fill: none; stroke: color-mix(in srgb, var(--teal) 45%, var(--card)); stroke-width: 2; }
.compass .hub-core { fill: color-mix(in srgb, var(--teal) 70%, #fff); }
.compass .lubber { stroke: var(--teal); stroke-width: 4; stroke-linecap: round; }
.compass .lubber--recip { stroke: var(--amber); }
.compass .recip { fill: var(--fg); font-size: 20px; font-weight: 600; font-variant-numeric: tabular-nums; opacity: 0; transition: opacity .5s ease .2s; }
.compass .recip__card { fill: var(--amber); }
.compass .lock { fill: none; stroke: var(--teal); stroke-width: 3; stroke-linecap: round;
  stroke-dasharray: 100; stroke-dashoffset: 100; transition: stroke-dashoffset .7s cubic-bezier(.2, .8, .2, 1); }
.compass .lock--tail { stroke-width: 4.5; stroke-dasharray: none; opacity: 0; transition: opacity .3s ease .5s; }
/* Auto → locked: the dial-fixed ring fades out, the bearing-anchored ring fades in */
.compass .ring-lock { opacity: 0; transition: opacity .5s ease; }
.compass .ring-auto { transition: opacity .5s ease; }
.compass.is-locked .lock { stroke-dashoffset: 0; }
.compass.is-locked .lock--tail, .compass.is-locked .recip, .compass.is-locked .ring-lock { opacity: 1; }
.compass.is-locked .ring-auto { opacity: 0; }
.compass__dial { transition: transform 1.4s cubic-bezier(.2, .8, .2, 1); }
.compass-note { margin-top: .75rem; font-size: .8125rem; color: var(--fg-3); }

/* ---------- screenshots ---------- */
.phones {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: clamp(1rem, 3vw, 2.5rem);
  max-width: 900px;
  margin-inline: auto;
  align-items: start;
}
.phone { display: grid; gap: .8rem; justify-items: center; }
.phone img { width: 100%; max-width: 300px; filter: drop-shadow(0 30px 40px rgb(0 0 0 / .45)); }
.phone figcaption { text-align: center; font-size: var(--t-small); color: var(--fg-2); }
.phone figcaption b { color: var(--fg); font-weight: 600; }

/* ---------- chapters (feature groups) ---------- */
.chapters { display: grid; gap: clamp(3.5rem, 8vw, 6rem); }
.chapter { display: grid; gap: 1.75rem; align-items: center; }
@media (min-width: 820px) {
  .chapter { grid-template-columns: 1fr 1fr; gap: clamp(2rem, 5vw, 4.5rem); }
  .chapter--flip .chapter__media { order: 2; }
}
.chapter__text { display: grid; gap: 1.5rem; }
.chapter__text h2 { font-size: clamp(1.75rem, 1.3rem + 1.8vw, 2.5rem); }
.feat { display: grid; gap: .3rem; padding-left: 1rem; border-left: 2px solid var(--line-strong); }
.feat h3 { font-size: 1.125rem; }
.feat p { color: var(--fg-2); font-size: var(--t-small); }
.chapter__media {
  display: grid; gap: .8rem; padding: clamp(1rem, 3vw, 1.75rem);
  border-radius: var(--r-lg); background: #07090d; border: 1px solid rgb(255 255 255 / .08);
  box-shadow: var(--shadow-soft);
}
.chapter__media img { border-radius: 10px; width: 100%; }
.media-row { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; align-items: center; }
.media-row--3 { grid-template-columns: 1fr 1fr 1fr; }
.media-row--pair { grid-template-columns: auto auto; justify-content: center; gap: 1.25rem; }
.media-row--pair img { width: auto; max-height: 200px; }

/* ---------- FAQ as grouped inset list ---------- */
.faq { display: grid; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--card); }
.faq details + details { border-top: 1px solid var(--line); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 1rem;
  padding: 1.05rem 1.25rem; font-weight: 600; font-size: 1.0625rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: ""; margin-left: auto; flex: none; width: 9px; height: 9px;
  border-right: 2px solid var(--fg-3); border-bottom: 2px solid var(--fg-3);
  transform: rotate(45deg); transition: transform .2s;
}
.faq details[open] summary::after { transform: rotate(-135deg); }
.faq summary:hover { background: var(--card-2); }
.faq p { padding: 0 1.25rem 1.2rem; color: var(--fg-2); max-width: 64ch; }

/* ---------- download / cta band ---------- */
.cta { display: grid; gap: 1.25rem; justify-items: center; text-align: center; }
.cta p { max-width: 44ch; color: var(--fg-2); }
.cta__links { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.25rem; font-size: var(--t-small); }

/* ---------- prose ---------- */
.pagehead { padding-block: clamp(3rem, 7vw, 5rem) 1rem; display: grid; gap: .6rem; }
.pagehead h1 { font-size: clamp(2.25rem, 1.5rem + 3vw, 3.75rem); }
.prose { padding-bottom: clamp(3rem, 7vw, 5rem); }
.prose > * + * { margin-top: 1rem; }
.prose h2 { font-size: 1.375rem; margin-top: 2.5rem; letter-spacing: -.02em; }
.prose p, .prose li { color: var(--fg-2); }
.prose ul { padding-left: 1.2rem; }
.prose .effective { color: var(--fg-3); font-size: var(--t-small); }
.note { padding: 1rem 1.2rem; border-radius: var(--r-sm); background: var(--card); border: 1px solid var(--line); }
.note--todo { border-color: color-mix(in srgb, var(--amber) 45%, transparent); background: var(--amber-wash); }
.note p + p { margin-top: .4rem; }
.related { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: var(--t-small); }

/* ---------- form (grouped inset) ---------- */
.form { display: grid; gap: 1.5rem; max-width: 640px; }
.group { display: grid; border: 1px solid var(--line); border-radius: var(--r); background: var(--card); overflow: hidden; }
.group__title { padding: .9rem 1.1rem .4rem; }
.field { display: grid; gap: .35rem; padding: .8rem 1.1rem; }
.field + .field { border-top: 1px solid var(--line); }
.field label { font-size: var(--t-small); font-weight: 600; }
.field .hint { font-size: .8125rem; color: var(--fg-3); }
.field input, .field select, .field textarea {
  font: inherit; font-size: 1rem; color: var(--fg); background: var(--bg);
  border: 1px solid var(--line); border-radius: var(--r-sm); padding: .6rem .75rem; width: 100%;
}
.field textarea { min-height: 120px; resize: vertical; }
.field input[type="file"] { padding: .45rem; color: var(--fg-2); }
.check { display: grid; grid-template-columns: auto 1fr; gap: .7rem; align-items: start; font-size: var(--t-small); color: var(--fg-2); padding: .8rem 1.1rem; }
.check + .check { border-top: 1px solid var(--line); }
.check input { margin-top: .2rem; width: 17px; height: 17px; accent-color: var(--accent); }
.req { color: var(--amber); }
.form__status { padding: .9rem 1.1rem; border-radius: var(--r-sm); background: var(--amber-wash); color: var(--fg); font-size: var(--t-small); }
.form__status--error { display: none; background: color-mix(in srgb, #e5484d 16%, var(--card)); border: 1px solid color-mix(in srgb, #e5484d 45%, transparent); }
.form__status--error:target { display: block; }
.form__status a { color: inherit; text-decoration: underline; }
/* Honeypot: off-canvas, not display:none, so simple bots still fill it. */
.form { position: relative; }
.hp { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.form__foot { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; }
.form__foot .small { color: var(--fg-3); }

/* ---------- footer ---------- */
.ftr { border-top: 1px solid var(--line); background: var(--band); padding-block: clamp(2.5rem, 6vw, 4rem) calc(1.5rem + env(safe-area-inset-bottom, 0px)); }
.ftr__grid { display: grid; gap: 2rem; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
.ftr__brand { grid-column: 1 / -1; display: grid; gap: .9rem; }
@media (min-width: 820px) { .ftr__grid { grid-template-columns: 2fr 1fr 1fr 1fr 1fr; } .ftr__brand { grid-column: auto; } }
.ftr__brand img { height: 64px; width: auto; }
.ftr__brand address { font-style: normal; font-size: var(--t-small); color: var(--fg-3); line-height: 1.6; }
.ftr h4 { font-size: var(--t-label); font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--fg-3); margin-bottom: .75rem; }
.ftr ul { list-style: none; margin: 0; padding: 0; display: grid; gap: .45rem; }
.ftr li a { color: var(--fg-2); font-size: var(--t-small); }
.ftr li a:hover { color: var(--fg); }
.ftr__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .5rem 1.5rem; margin-top: 2.5rem; padding-top: 1.25rem; border-top: 1px solid var(--line); font-size: .8125rem; color: var(--fg-3); }

.skip { position: absolute; left: -9999px; top: .5rem; z-index: 60; background: var(--card); padding: .6rem 1rem; border-radius: var(--r-sm); }
.skip:focus { left: 1rem; }