/* Hallmark · genre: atmospheric · macrostructure: Workbench · theme: Hushfield Mineral
 * tone: quiet / nocturnal / product-led · anchor hue: brass (warm)
 * nav: N5 floating pill · footer: Ft5 statement · sections: F4 step sequence, F5 annotated screenshot, C4 sticky bar
 * enrichment: none — real product captures carry the page
 * axes: paper dark (L 8%) · display classical-serif · accent warm
 * Deviation, on record: gate 47 bans hand-built device chrome. The iPhone frame below
 * was requested explicitly, so it is drawn to real iPhone 15 Pro geometry (2.165 aspect,
 * 14% screen radius, Dynamic Island sized to the gap the captures already leave).
 * Every colour and font here resolves through a token in tokens.css.
 */

/* ─────────────────────────────  Base  ───────────────────────────── */

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

html {
  overflow-x: clip;
  background: var(--color-paper);
  color: var(--color-ink);
  scroll-behavior: smooth;
  scroll-padding-block-start: 6rem;
  -webkit-text-size-adjust: 100%;
}

body {
  overflow-x: clip;
  margin: 0;
  font: 400 100%/1.65 var(--font-body);
  background:
    radial-gradient(58% 30% at 82% 8%, var(--color-accent-glow), transparent 68%),
    radial-gradient(48% 26% at 12% 88%, var(--color-accent-glow), transparent 70%),
    var(--color-paper);
  background-attachment: fixed;
}

img, svg { display: block; max-width: 100%; }
img { height: auto; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-style: normal;
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 0.94;
  overflow-wrap: anywhere;
  min-width: 0;
  margin: 0;
  text-wrap: balance;
}
h1 { font-size: var(--text-display); }
h2 { font-size: var(--text-2xl); }
h3 { font-size: var(--text-xl); line-height: 1.0; }

p { margin: 0; }
.accent { color: var(--color-accent); }
.muted  { color: var(--color-ink-muted); }

.lede {
  color: var(--color-ink-muted);
  font-size: var(--text-md);
  max-width: var(--measure);
  margin-block-start: var(--space-md);
}

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.skip {
  position: absolute;
  inset-block-start: -5rem;
  inset-inline-start: var(--space-md);
  z-index: var(--z-skip);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-ink);
  color: var(--color-paper);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius-sm);
}
.skip:focus { inset-block-start: var(--space-md); }

/* Page container — one rhythm, section padding varies deliberately */
.hero, .tour, .library, .quiet, .close {
  width: min(1180px, 100%);
  margin-inline: auto;
  padding-inline: var(--page-gutter);
}

/* ──────────────────────  N5 · Floating pill nav  ────────────────────── */

.nav-pill {
  position: fixed;
  inset-block-start: var(--space-sm);
  inset-inline: var(--space-sm);
  z-index: var(--z-nav);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  margin-inline: auto;
  width: fit-content;
  max-width: calc(100% - var(--space-md));
  padding: 0.4rem 0.4rem 0.4rem 0.7rem;
  background: var(--color-scrim);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-pill);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  gap: 0.55rem;
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
}
.wordmark__mark {
  width: 1.55rem;
  height: 1.55rem;
  border-radius: 27%;
  flex: none;
}
.wordmark--sm { font-size: 1.2rem; }
.wordmark--sm .wordmark__mark { width: 1.35rem; height: 1.35rem; }

/* N5 collapse: the hero keeps a Library jump when the pill loses its links. */
.nav-pill__links {
  display: none;
  gap: var(--space-md);
  margin: 0;
  padding: 0;
  list-style: none;
}
.nav-pill__links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding-inline: 0.2rem;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-ink-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease-out);
}
.nav-pill__links a:hover { color: var(--color-ink); }

/* Below the 60rem breakpoint the pill carries only logo + CTA (no link list),
   so it must be noticeably smaller than the viewport to still read as
   "floating" rather than a compressed full-width header. */
@media (max-width: 37.49rem) {
  .nav-pill { gap: var(--space-sm); padding: 0.3rem 0.3rem 0.3rem 0.55rem; }
  .wordmark { font-size: 1.05rem; gap: 0.4rem; }
  .wordmark__mark { width: 1.25rem; height: 1.25rem; }
  .nav-pill .btn { padding: 0.5rem 0.75rem; font-size: var(--text-sm); }
}

/* ─────────────────────────  Buttons & stores  ───────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.6rem 1.05rem;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
  text-decoration: none;
  border: var(--rule-hair) solid transparent;
  border-radius: var(--radius-pill);
  transition: transform var(--dur-micro) var(--ease-out),
              background-color var(--dur-micro) var(--ease-out);
}
.btn--fill { background: var(--color-accent); color: var(--color-paper); }
.btn:active { transform: translateY(1px); }

.stores {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-block-start: var(--space-lg);
}
.store {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  min-height: 56px;
  padding: 0.5rem 1rem 0.5rem 0.85rem;
  color: var(--color-ink);
  text-decoration: none;
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-md);
  background: var(--color-paper-2);
  transition: transform var(--dur-micro) var(--ease-out),
              border-color var(--dur-micro) var(--ease-out);
}
.store__glyph { width: 1.35rem; height: 1.35rem; flex: none; }
.store span {
  display: block;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.1;
  white-space: nowrap;
}
.store small {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}
.store:active { transform: translateY(1px); }
.hero .store, .tour__cta .store {
  background: var(--color-paper-3);
  border-color: var(--color-accent-soft);
}
@media (max-width: 37.49rem) {
  .hero .stores { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero .store { min-width: 0; gap: 0.4rem; padding-inline: 0.6rem; }
  .hero .store__glyph { width: 1.1rem; height: 1.1rem; }
  .hero .store span { font-size: 0.9rem; }
  .hero .store small { font-size: 0.75rem; letter-spacing: 0.01em; }
}

.trust {
  margin-block-start: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}
.sound-preview {
  max-width: var(--measure);
  padding-block-start: var(--space-md);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.sound-preview p { font-size: var(--text-sm); font-weight: 700; }
.sound-preview audio {
  display: block;
  width: min(100%, 22rem);
  margin-block: var(--space-xs);
  color-scheme: dark;
}
.sound-preview small {
  display: block;
  color: var(--color-ink-muted);
  font-size: var(--text-xs);
  line-height: 1.45;
}

.link-typo {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-block-start: var(--space-lg);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  white-space: nowrap;
  border-block-end: var(--rule-hair) solid var(--color-accent-soft);
  transition: border-color var(--dur-micro) var(--ease-out);
}
.link-typo:hover { border-block-end-color: var(--color-accent); }

/* ───────────────  The iPhone frame  ───────────────
 * Geometry from an iPhone 15 Pro: 2.165 screen aspect, 14 % corner radius,
 * ~3 % rail, Dynamic Island 30 % wide at a 0.294 aspect. Sizes derive from
 * --dev-w so one custom property scales the whole device.
 */

.device {
  /* --dev-w is the single knob: every radius, rail and island derives from it.
     The vw term keeps the frame inside its column down to 320px. */
  --dev-w: min(284px, 72vw);
  --bezel: calc(var(--dev-w) * 0.030);
  position: relative;
  width: var(--dev-w);
  max-width: 100%;
  margin: 0;
  padding: var(--bezel);
  border-radius: calc(var(--dev-w) * 0.170);
  background: linear-gradient(148deg,
    var(--color-rail-hi) 0%,
    var(--color-rail-lo) 20%,
    var(--color-rail-hi) 44%,
    var(--color-rail-lo) 72%,
    var(--color-rail-mid) 100%);
  box-shadow:
    0 0 0 1px var(--color-rail-edge),
    0 calc(var(--dev-w) * 0.07) calc(var(--dev-w) * 0.16) calc(var(--dev-w) * -0.05) var(--color-shadow);
}

/* right rail — power */
.device::before {
  content: "";
  position: absolute;
  inset-inline-end: calc(var(--dev-w) * -0.006);
  inset-block-start: 26%;
  width: calc(var(--dev-w) * 0.012);
  height: 11%;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--color-rail-lo), var(--color-rail-hi));
}
/* left rail — action button + volume rocker, three nubs from one gradient */
.device::after {
  content: "";
  position: absolute;
  inset-inline-start: calc(var(--dev-w) * -0.006);
  inset-block-start: 16%;
  width: calc(var(--dev-w) * 0.012);
  height: 25%;
  border-radius: 2px 0 0 2px;
  background: linear-gradient(180deg,
    var(--color-rail-hi) 0 20%,
    transparent 20% 34%,
    var(--color-rail-hi) 34% 63%,
    transparent 63% 71%,
    var(--color-rail-hi) 71% 100%);
}

.device__screen {
  position: relative;
  overflow: hidden;
  border-radius: calc(var(--dev-w) * 0.140);
  background: var(--color-rail-screen);
  box-shadow: inset 0 0 0 1px var(--color-rail-edge);
  isolation: isolate;
}
.device__screen img { width: 100%; }

.device__island {
  position: absolute;
  inset-block-start: calc(var(--bezel) + var(--dev-w) * 0.026);
  inset-inline-start: 50%;
  transform: translateX(-50%);
  width: calc(var(--dev-w) * 0.300);
  height: calc(var(--dev-w) * 0.088);
  border-radius: var(--radius-pill);
  background: var(--color-rail-screen);
  z-index: var(--z-base);
}

/* ─────────────────────────────  Hero  ───────────────────────────── */

.hero {
  display: grid;
  gap: var(--space-xl);
  padding-block: calc(var(--space-3xl) + 1rem) var(--space-2xl);
}
.hero__copy { max-width: 38rem; }
.hero__kicker {
  margin-block-end: var(--space-md);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: 0.04em;
}
.hero__stage { display: flex; justify-content: center; }
.device--hero { --dev-w: min(320px, 76vw); transform: rotate(2.5deg); }
.hero__jump { display: none; }

@media (max-width: 59.99rem) {
  .hero__jump {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    margin-block-start: var(--space-sm);
    color: var(--color-accent);
    font-size: var(--text-sm);
    font-weight: 600;
    text-underline-offset: 0.2em;
  }
}

/* ───────────────────  The tour · F4 step sequence  ─────────────────── */

.tour { padding-block: var(--space-2xl) var(--space-xl); }
.tour__head {
  padding-block-end: var(--space-xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}
.step {
  display: grid;
  gap: var(--space-lg);
  padding-block: var(--space-2xl);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}
.step:last-child { border-block-end: 0; }
.tour__cta {
  padding-block: var(--space-lg);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.tour__cta p {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.1;
}
.tour__cta .stores { margin-block-start: var(--space-md); }

.stage {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  margin-block-end: var(--space-sm);
}
.step__text h3 { margin-block-end: var(--space-md); }
.step__text p {
  color: var(--color-ink-muted);
  max-width: 30rem;
}

.step__figure {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
}

/* F5 · annotated screenshot — notes flow as a list on narrow screens */
.notes ul { margin: 0; padding: 0; list-style: none; }
.notes a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  margin-block-start: var(--space-xs);
  color: var(--color-accent);
  font-size: var(--text-sm);
  font-weight: 600;
  text-underline-offset: 0.2em;
}
.note {
  margin-block-start: var(--space-md);
  padding-block-start: var(--space-sm);
  border-block-start: var(--rule-hair) solid var(--color-accent-soft);
  font-size: var(--text-sm);
  line-height: 1.45;
  color: var(--color-ink-muted);
  max-width: 26rem;
  margin-inline: auto;
}

/* ────────────────────────────  Library  ──────────────────────────── */

.library {
  display: grid;
  gap: var(--space-xl);
  padding-block: var(--space-2xl) var(--space-3xl);
  justify-items: center;
}
.library .device { --dev-w: min(296px, 74vw); transform: rotate(-2deg); }
.library__body { width: 100%; }

.atlas {
  margin-block: var(--space-lg) 0;
  padding: 0;
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.atlas > div {
  display: grid;
  gap: 0.1rem var(--space-md);
  padding-block: var(--space-sm);
  border-block-end: var(--rule-hair) solid var(--color-rule);
}
.atlas dt {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
}
.atlas dd {
  margin: 0;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}
.atlas__tail {
  margin-block-start: var(--space-md);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* ────────────────────────  Quiet by design  ──────────────────────── */

.quiet { padding-block: var(--space-xl) var(--space-2xl); }
.pledges {
  margin-block: var(--space-xl) 0;
  padding: 0;
  display: grid;
  gap: 0;
}
.pledge {
  display: grid;
  gap: var(--space-2xs) var(--space-lg);
  padding-block: var(--space-md);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.pledge:last-child { border-block-end: var(--rule-hair) solid var(--color-rule); }
.pledge dt {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--color-ink);
}
.pledge dd {
  margin: 0;
  color: var(--color-ink-muted);
  max-width: 40rem;
}

/* ─────────────────────────────  Close  ───────────────────────────── */

.close {
  padding-block: var(--space-3xl);
  text-align: center;
}
.close .stores { justify-content: center; }

/* ─────────────────────  Ft5 · Statement footer  ───────────────────── */

.foot-stmt {
  width: min(1180px, 100%);
  margin-inline: auto;
  padding: var(--space-2xl) var(--page-gutter) var(--space-xl);
  display: grid;
  gap: var(--space-lg);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.foot-stmt__line {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 5vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  line-height: 1;
  max-width: 22ch;
}
.foot-stmt__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block-start: var(--space-md);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}
.foot-stmt__nav { display: flex; flex-wrap: wrap; gap: var(--space-md); }
.foot-stmt__nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--dur-micro) var(--ease-out);
}
.foot-stmt__nav a:hover { color: var(--color-ink); }
.foot-stmt__meta .muted { font-size: var(--text-sm); }

/* ──────────────────  C4 · Sticky bottom bar  ────────────────── */

.cta-sticky {
  position: fixed;
  inset-inline: 0;
  inset-block-end: 0;
  z-index: var(--z-sticky);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-sm) var(--page-gutter);
  padding-block-end: max(var(--space-sm), env(safe-area-inset-bottom));
  background: var(--color-scrim);
  backdrop-filter: blur(14px) saturate(130%);
  -webkit-backdrop-filter: blur(14px) saturate(130%);
  border-block-start: var(--rule-hair) solid var(--color-rule);
  transform: translateY(100%);
  transition: transform var(--dur-short) var(--ease-out);
}
.cta-sticky[hidden] { display: none; }
.cta-sticky.is-shown { transform: translateY(0); }
.cta-sticky p {
  margin-inline-end: auto;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.cta-sticky .btn {
  flex: none;
  background: var(--color-paper-2);
  border-color: var(--color-rule-strong);
}
.cta-sticky .btn:hover { border-color: var(--color-accent); }

@media (max-width: 37.49rem) {
  .cta-sticky { justify-content: center; gap: var(--space-sm); }
  .cta-sticky p { display: none; }
}

/* ─────────────────────────  Load reveal  ───────────────────────── */

.reveal {
  opacity: 0;
  transform: translateY(10px);
  animation: reveal var(--dur-long) var(--ease-out) forwards;
  animation-delay: calc(var(--i, 0) * 70ms);
}
@keyframes reveal { to { opacity: 1; transform: none; } }

/* ═══════════════════════  40rem — small tablet  ═══════════════════════ */

@media (min-width: 40rem) {
  .hero { padding-block: calc(var(--space-3xl) + 2rem) var(--space-3xl); }
  .atlas > div { grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); align-items: baseline; }
  .pledge { grid-template-columns: minmax(0, 11rem) minmax(0, 1fr); }
  .library { justify-items: start; }
}

/* ═══════════════════════  60rem — desktop  ═══════════════════════ */

@media (min-width: 60rem) {
  .nav-pill { padding-inline: 0.9rem 0.4rem; }
  .nav-pill__links { display: flex; }

  .hero {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    column-gap: var(--space-2xl);
    row-gap: var(--space-md);
    padding-block: calc(var(--space-3xl) + 3rem) var(--space-3xl);
  }
  .hero__stage { grid-column: 2; grid-row: 1 / span 2; }
  .sound-preview { grid-column: 1; grid-row: 2; }

  .tour__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: var(--space-xl);
    align-items: end;
  }
  .tour__head .lede { margin-block-start: 0; }

  .step {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
    gap: var(--space-2xl);
    padding-block: var(--space-3xl);
  }
  .step--flip .step__text { order: 2; }
  .step--flip .step__figure { order: 1; }

  .library {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    align-items: center;
    gap: var(--space-2xl);
    justify-items: start;
  }

  .pledge { grid-template-columns: minmax(0, 14rem) minmax(0, 1fr); }
}

/* ══════════════  75rem — room for the annotated callouts  ══════════════ */

@media (min-width: 75rem) {
  /* The note sits beside the device rather than under it. Flex, not absolute
   * positioning — a callout can never overflow its column this way. */
  .step__figure {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 2.4rem;
  }
  .step__figure .device { flex: none; }
  .notes { flex: 0 1 10.5rem; min-width: 0; }
  .note {
    position: relative;
    width: auto;
    max-width: none;
    margin: 0;
    padding-block-start: 0;
    border-block-start: 0;
  }
  .note::before {
    content: "";
    position: absolute;
    inset-inline-end: 100%;
    inset-block-start: 0.62em;
    width: 1.7rem;
    height: 1px;
    background: var(--color-accent);
  }
  .step--flip .step__figure { flex-direction: row-reverse; }
  .step--flip .note { text-align: end; }
  .step--flip .note::before { inset-inline-end: auto; inset-inline-start: 100%; }
}

/* ─────────────────────  Pointer & motion preferences  ───────────────────── */

@media (hover: hover) and (pointer: fine) {
  .store:hover { transform: translateY(-2px); border-color: var(--color-accent-soft); }
  .btn--fill:hover { transform: translateY(-1px); }
}

@media (pointer: coarse) {
  .btn, .store { min-height: 48px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { animation-duration: 150ms; transform: none; }
  .cta-sticky { transition-duration: 150ms; }
  .device--hero, .library .device { transform: none; }
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; }
}