/* BeatSleep, the site.

   The palette is the app's own, converted from the same OKLCH numbers: black
   ground, no text above 92% white, accent at hue 282. Everything that moves
   here moves the way the app moves: slowly, and never asking for attention.

   Three widths and nothing else: --measure for prose, --wide for the figures
   and the grids, and the full window for the hero. Sections are separated by
   a hairline rather than by a coloured band, because a black ground with one
   accent on it has no second colour to spend. */

:root {
  --ground: #000;
  --raise: #0f1017;  /* for anything older than oklch() */
  --raise: oklch(0.175 0.016 282);
  --raise-2: #1a1b25;  /* for anything older than oklch() */
  --raise-2: oklch(0.225 0.020 282);
  --line: rgba(255, 255, 255, 0.09);
  --line-soft: rgba(255, 255, 255, 0.055);

  --primary: rgba(255, 255, 255, 0.92);
  --secondary: rgba(255, 255, 255, 0.58);
  --tertiary: rgba(255, 255, 255, 0.38);
  --faint: rgba(255, 255, 255, 0.24);

  --accent: #a1a3e9;  /* for anything older than oklch() */
  --accent: oklch(0.74 0.10 282);
  --accent-soft: #7d7fbb;  /* for anything older than oklch() */
  --accent-soft: oklch(0.62 0.09 282);
  --accent-lift: #cacdf8;  /* for anything older than oklch() */
  --accent-lift: oklch(0.86 0.06 282);
  --warm: #e1ab7b;  /* for anything older than oklch() */
  --warm: oklch(0.78 0.09 62);

  --measure: 38rem;
  --wide: 66rem;
  --gutter: clamp(1.25rem, 5vw, 2.5rem);
  --band: clamp(4.5rem, 11vw, 8rem);

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

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--primary);
  font-family: var(--sans);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.125rem);
  line-height: 1.62;
  font-weight: 400;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  font-synthesis-weight: none;
}

/* One wash of accent behind everything, like the app's ground at night. */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(120vw 78vh at 50% -12%, oklch(0.74 0.10 282 / 0.14), transparent 62%),
    radial-gradient(88vw 62vh at 92% 104%, oklch(0.62 0.09 282 / 0.08), transparent 62%);
}

.wrap { position: relative; z-index: 1; }

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.75rem 1rem;
  background: var(--raise-2);
  color: var(--primary);
  border: 0;
  border-radius: 0 0 10px 0;
  z-index: 90;
}
.skip:focus { left: 0; }

/* ============================== masthead ============================== */

.mast {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem var(--gutter);
  /* No backdrop-filter. A backdrop root on a sticky bar composites the whole
     page behind it and visibly dims every section below, and over a black
     ground the blur buys nothing a flat wash does not. */
  background: rgba(0, 0, 0, 0);
  border-bottom: 1px solid transparent;
  transition: background 0.4s var(--ease), border-color 0.4s var(--ease);
}

.mast.stuck {
  background: rgba(0, 0, 0, 0.92);
  border-bottom-color: var(--line);
}

.mast .home {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  border: 0;
  color: var(--primary);
  font-weight: 590;
  letter-spacing: -0.015em;
  font-size: 1.0625rem;
  margin-right: auto;
}

.mast .home img {
  width: 30px;
  height: 30px;
  border-radius: 8px;
}

.mast nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.4vw, 1.6rem);
  font-size: 0.9375rem;
}

.mast nav a {
  color: var(--secondary);
  text-decoration: none;
  border: 0;
  white-space: nowrap;
  /* Padding rather than a line-height, so the target a thumb has to hit is
     the 44 points Apple asks for and not the 20 the text occupies. */
  padding-block: 0.65rem;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.25s var(--ease);
}

.mast nav a:hover { color: var(--primary); }
.mast nav a[aria-current] { color: var(--primary); }

/* The language menu.
   Two languages were a link. Seven are a list, and a list in a masthead is a
   menu. It is a <details>, so it opens with no script at all and it closes
   itself on Escape: the site has two behaviours in app.js and this is not
   going to be the third. */
.mast .lang {
  position: relative;
  font-size: inherit;
}
.mast .lang > summary {
  color: var(--secondary);
  cursor: pointer;
  list-style: none;
  white-space: nowrap;
  padding-block: 0.65rem;
  -webkit-tap-highlight-color: transparent;
  transition: color 0.25s var(--ease);
}
.mast .lang > summary::-webkit-details-marker { display: none; }
.mast .lang > summary::after {
  content: "";
  display: inline-block;
  width: 0.36em;
  height: 0.36em;
  margin-left: 0.45em;
  vertical-align: 0.14em;
  border-right: 1.5px solid currentColor;
  border-bottom: 1.5px solid currentColor;
  transform: rotate(45deg) translate(-0.06em, -0.06em);
  transition: transform 0.25s var(--ease);
}
.mast .lang[open] > summary::after { transform: rotate(-135deg) translate(-0.1em, -0.1em); }
.mast .lang > summary:hover,
.mast .lang[open] > summary { color: var(--primary); }

.mast .lang > ul {
  position: absolute;
  top: calc(100% - 0.35rem);
  right: 0;
  z-index: 40;
  margin: 0;
  padding: 0.35rem 0;
  list-style: none;
  min-width: 9.5rem;
  border-radius: 12px;
  background: rgba(18, 18, 20, 0.92);
  border: 1px solid var(--line);
  box-shadow: 0 18px 44px rgba(0, 0, 0, 0.55);
  backdrop-filter: saturate(140%) blur(18px);
  -webkit-backdrop-filter: saturate(140%) blur(18px);
}
.mast .lang > ul a {
  display: block;
  padding: 0.5rem 0.95rem;
  font-size: 0.9375rem;
}
.mast .lang > ul a:hover { color: var(--primary); }

/* The masthead's own call to action, which only appears once the hero's has
   been scrolled past, because two of them on screen at once is one too many. */
.mast .get {
  display: none;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  background: var(--primary);
  color: #000;
  font-weight: 590;
  font-size: 0.875rem;
  transition: opacity 0.35s var(--ease), transform 0.35s var(--ease);
}
.mast .get:hover { color: #000; opacity: 0.86; }
.js .mast .get { display: inline-block; opacity: 0; transform: translateY(-4px); pointer-events: none; }
.js .mast.stuck .get { opacity: 1; transform: none; pointer-events: auto; }

/* =============================== layout =============================== */

main { display: block; }

/* The masthead is sticky, so an anchor has to stop short of it. */
[id] { scroll-margin-top: 5rem; }

.band {
  padding: var(--band) var(--gutter);
  border-top: 1px solid var(--line-soft);
}
.band:first-child { border-top: 0; }

.narrow { max-width: var(--measure); margin-inline: auto; }
.wide   { max-width: var(--wide);    margin-inline: auto; }

.lead-in { max-width: var(--measure); margin: 0 auto clamp(2rem, 5vw, 3rem); }
.wide > .lead-in { margin-inline: 0; }

/* ================================ type ================================ */

h1 {
  font-size: clamp(2.25rem, 1.4rem + 4.2vw, 4.25rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 600;
  margin: 0 0 1.25rem;
  text-wrap: balance;
}

h2 {
  font-size: clamp(1.5rem, 1.15rem + 1.5vw, 2.25rem);
  line-height: 1.12;
  letter-spacing: -0.028em;
  font-weight: 600;
  color: var(--primary);
  margin: 0 0 1rem;
  text-wrap: balance;
}

h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 1.75rem 0 0.35rem;
  color: var(--primary);
}

.eyebrow {
  display: block;
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tertiary);
  font-weight: 600;
  margin: 0 0 0.9rem;
}

.lede {
  font-size: clamp(1.0625rem, 0.98rem + 0.5vw, 1.3125rem);
  line-height: 1.5;
  color: var(--secondary);
  margin: 0 0 1.5rem;
  text-wrap: pretty;
}

p { margin: 0 0 1rem; color: var(--secondary); text-wrap: pretty; }
p:last-child { margin-bottom: 0; }
strong { color: var(--primary); font-weight: 590; }

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid oklch(0.74 0.10 282 / 0.32);
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}
a:hover { border-bottom-color: var(--accent); }

ul { margin: 0 0 1rem; padding-left: 1.15rem; color: var(--secondary); }
li { margin-bottom: 0.5rem; }
li::marker { color: var(--faint); }

.updated {
  font-size: 0.875rem;
  color: var(--tertiary);
  margin: -0.5rem 0 2.5rem;
}

.note {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--tertiary);
  max-width: var(--measure);
  margin-inline: auto;
}
/* Under a full-width grid the note lines up with it, not with the prose. */
.note.flush { margin-inline: 0; }

.mail {
  display: inline-block;
  font-size: clamp(1.125rem, 1rem + 0.7vw, 1.5rem);
  letter-spacing: -0.02em;
  margin: 0.25rem 0 1.75rem;
}

/* ================================ hero ================================ */

.hero {
  min-height: min(92vh, 900px);
  min-height: min(92svh, 900px);
  display: grid;
  place-items: center;
  text-align: center;
  padding: clamp(1rem, 4vw, 3rem) var(--gutter) clamp(3rem, 7vw, 5rem);
  border: 0;
}

.hero-inner { max-width: 46rem; width: 100%; }

.hero h1 {
  background: linear-gradient(180deg, #fff 30%, oklch(0.80 0.08 282 / 0.86) 122%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero .lede { margin: 0 auto 2rem; max-width: 33rem; }

/* The badge, and the line under it that says what it costs and what it needs. */
.get-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
}

.badge {
  display: inline-block;
  border: 0;
  line-height: 0;
  border-radius: 10px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.badge img { height: 48px; width: auto; display: block; }
.badge:hover { transform: translateY(-1px); opacity: 0.9; }

.terms-line {
  font-size: 0.8125rem;
  color: var(--tertiary);
  margin: 0;
  letter-spacing: 0.005em;
}

/* ========================== the hero instrument ========================== */
/* Two lines: the wrist, and the tap just under it. This is the product. */

.instrument {
  width: min(100%, 34rem);
  margin: 0 auto clamp(1.5rem, 4vw, 2.75rem);
  position: relative;
  aspect-ratio: 16 / 8;
  max-height: min(34vh, 17rem);
  max-height: min(34svh, 17rem);
}

.instrument svg { width: 100%; height: 100%; overflow: visible; }

.trace {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 1400;
  stroke-dashoffset: 1400;
  animation: draw 4.5s var(--ease) forwards;
}

.trace.pulse { stroke: oklch(0.82 0.05 282 / 0.85); stroke-width: 2; }
.trace.cadence {
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-dasharray: 1400;
  animation-delay: 0.7s;
  filter: drop-shadow(0 0 10px oklch(0.74 0.10 282 / 0.5));
}

@keyframes draw { to { stroke-dashoffset: 0; } }

.trace-label {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  opacity: 0;
  animation: fade-in 1.2s var(--ease) 3.4s forwards;
}
.trace-label.a { fill: rgba(255, 255, 255, 0.5); }
.trace-label.b { fill: oklch(0.74 0.10 282); }

@keyframes fade-in { to { opacity: 1; } }

/* The orb, behind the trace, beating at the cadence. */
.orb {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(46%, 12rem);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%,
              oklch(0.74 0.10 282 / 0.55) 0%,
              oklch(0.62 0.09 282 / 0.22) 45%,
              transparent 72%);
  animation: beat 3.4s var(--ease) infinite;
  z-index: -1;
}

@keyframes beat {
  0%   { transform: translate(-50%, -50%) scale(0.84); opacity: 0.5; }
  16%  { transform: translate(-50%, -50%) scale(1);    opacity: 1; }
  100% { transform: translate(-50%, -50%) scale(0.84); opacity: 0.5; }
}

/* =============================== claims =============================== */

.claims {
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr));
}

.claim {
  background: var(--ground);
  padding: 1.6rem 1.4rem;
}

.claim .big {
  display: block;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--primary);
  margin-bottom: 0.3rem;
}

.claim p { margin: 0; font-size: 0.875rem; line-height: 1.5; }

/* =============================== plates =============================== */
/* A figure and the sentence that reads it. */

.plate {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, var(--raise), oklch(0.13 0.012 282));
  padding: clamp(1.25rem, 3vw, 2rem);
}

.plate img,
.plate svg { display: block; width: 100%; height: auto; }

.plate figcaption,
.caption {
  font-size: 0.8125rem;
  line-height: 1.55;
  color: var(--tertiary);
  margin: 1.1rem 0 0;
  text-wrap: pretty;
}

figure { margin: 0; }

/* The Nightprint sits on its own, centred, because it is the one object in
   the app that is meant to be recognised across a room. */
.print {
  display: grid;
  place-items: center;
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.print img { width: min(100%, 22rem); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.35rem;
  margin: 1.25rem 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.8125rem;
  color: var(--tertiary);
}
.legend li { display: inline-flex; align-items: center; gap: 0.45rem; margin: 0; }
.legend .key {
  width: 22px;
  height: 3px;
  border-radius: 2px;
  background: var(--accent);
  flex: none;
}
.legend .key.solid { background: rgba(255, 255, 255, 0.8); }
.legend .key.dashed {
  background: none;
  border-top: 3px dashed var(--accent);
  height: 0;
}
.legend .key.square { width: 12px; height: 12px; border-radius: 3px; }
.legend .key.outline { background: none; border: 1px solid var(--faint); }

/* ================================ stats ================================ */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 1.5rem;
}

.stat {
  background: var(--ground);
  padding: 1.25rem 1.2rem;
}

.stat .num {
  display: block;
  font-size: 1.75rem;
  font-weight: 590;
  letter-spacing: -0.04em;
  color: var(--primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.stat .num .unit {
  font-size: 0.9375rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  color: var(--secondary);
  margin-left: 0.15em;
}
.stat .what {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--tertiary);
  margin-top: 0.35rem;
}

/* =============================== phases =============================== */

.phases { list-style: none; padding: 0; margin: 0; }

.phase {
  position: relative;
  padding: 1.5rem 0 1.5rem 3.25rem;
  border-top: 1px solid var(--line);
}
.phase:last-child { border-bottom: 1px solid var(--line); }

/* The rail, and the dot that marks each phase on it. */
.phase::before {
  content: "";
  position: absolute;
  left: 0.5rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.phase::after {
  content: "";
  position: absolute;
  left: calc(0.5rem - 3.5px);
  top: 1.95rem;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 oklch(0.74 0.10 282 / 0.5);
  animation: ping 3.4s var(--ease) infinite;
}

.phase:nth-child(1)::after { animation-delay: 0s; }
.phase:nth-child(2)::after { animation-delay: 0.35s; }
.phase:nth-child(3)::after { animation-delay: 0.7s; }
.phase:nth-child(4)::after { animation-delay: 1.05s; background: var(--warm); }

@keyframes ping {
  0%, 60%, 100% { box-shadow: 0 0 0 0 oklch(0.74 0.10 282 / 0); }
  10% { box-shadow: 0 0 0 7px oklch(0.74 0.10 282 / 0.28); }
  30% { box-shadow: 0 0 0 12px oklch(0.74 0.10 282 / 0); }
}

.phase .name {
  display: block;
  color: var(--primary);
  font-weight: 590;
  letter-spacing: -0.01em;
  margin-bottom: 0.15rem;
}

.phase .when {
  color: var(--tertiary);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
  margin-left: 0.5rem;
  font-size: 0.8125rem;
  letter-spacing: 0;
}

.phase p { margin: 0; font-size: 0.9375rem; }

/* ================================ split ================================ */
/* Prose beside a figure, one under the other until there is room. */

.split {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}
/* Capped whether it is beside the figure or stacked above it: a tablet in
   portrait is wide enough to run a paragraph to a hundred characters, which
   is a line nobody can find their way back along. */
.split .prose { max-width: 34rem; }

@media (min-width: 56rem) {
  .split { grid-template-columns: 1fr 1fr; }
  .split.wider-figure { grid-template-columns: 0.85fr 1.15fr; }
}

/* ================================ tiles ================================ */

.tiles {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 1.5rem;
}

/* The columns are chosen so the last row is never half empty: three tiles or
   six tiles both divide by three, and only the six ever sit two abreast. */
@media (min-width: 40rem) { .tiles.six { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 58rem) { .tiles, .tiles.six { grid-template-columns: repeat(3, 1fr); } }

.tile {
  background: var(--ground);
  padding: 1.5rem 1.4rem;
}

.tile h3 { margin: 0 0 0.3rem; font-size: 1rem; }
.tile p { margin: 0; font-size: 0.875rem; line-height: 1.5; }

.tile .glyph {
  display: block;
  color: var(--accent);
  margin-bottom: 0.85rem;
}
.tile .glyph svg { display: block; width: 22px; height: 22px; }

/* ================================ plans ================================ */

.plans {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.5rem);
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  margin-top: 1.75rem;
}

.plan {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.35rem, 3vw, 1.85rem);
  background: linear-gradient(180deg, oklch(0.155 0.012 282), #000);
}
.plan.pro {
  border-color: oklch(0.74 0.10 282 / 0.35);
  background: linear-gradient(180deg, oklch(0.20 0.030 282), #000 78%);
}

.plan .kind {
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--tertiary);
  font-weight: 600;
}
.plan.pro .kind { color: var(--accent); }

.plan .price {
  display: block;
  font-size: 1.625rem;
  font-weight: 600;
  letter-spacing: -0.035em;
  color: var(--primary);
  margin: 0.55rem 0 0.15rem;
}
.plan .price small {
  font-size: 0.9375rem;
  font-weight: 450;
  letter-spacing: -0.01em;
  color: var(--secondary);
}
.plan .aside { font-size: 0.8125rem; color: var(--tertiary); margin: 0 0 1.15rem; }

.plan ul { list-style: none; padding: 0; margin: 0; font-size: 0.9375rem; }
.plan li {
  position: relative;
  padding-left: 1.6rem;
  margin-bottom: 0.6rem;
  line-height: 1.45;
}
.plan li::before {
  content: "";
  position: absolute;
  left: 0.25rem;
  top: 0.62em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--faint);
}
.plan.pro li::before { background: var(--accent); }

/* =============================== callout =============================== */

.callout {
  border-left: 2px solid oklch(0.74 0.10 282 / 0.45);
  padding: 0.1rem 0 0.1rem 1.35rem;
  margin: 2rem 0 0;
  font-size: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
  line-height: 1.45;
  color: var(--primary);
  letter-spacing: -0.015em;
  text-wrap: pretty;
}

/* ============================== questions ============================== */

.qa { border-bottom: 1px solid var(--line); }
.qa:first-child,
h2 + .qa { border-top: 1px solid var(--line); }

.qa summary {
  list-style: none;
  cursor: pointer;
  padding: 1.15rem 2.5rem 1.15rem 0;
  position: relative;
  font-weight: 550;
  letter-spacing: -0.012em;
  color: var(--primary);
}
.qa summary::-webkit-details-marker { display: none; }

.qa summary::after {
  content: "";
  position: absolute;
  right: 0.55rem;
  top: 1.55rem;
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--tertiary);
  border-bottom: 1.5px solid var(--tertiary);
  transform: rotate(45deg);
  transition: transform 0.3s var(--ease);
}
.qa[open] summary::after { transform: rotate(-135deg); }
.qa summary:hover::after { border-color: var(--primary); }

.qa .answer { padding: 0 0 1.35rem; font-size: 0.9375rem; }
.qa .answer p:last-child { margin-bottom: 0; }

/* =============================== last call =============================== */

.closing {
  text-align: center;
  padding-block: clamp(5rem, 12vw, 8rem);
}
.closing h2 { font-size: clamp(1.75rem, 1.2rem + 2.4vw, 2.75rem); }
.closing .lede { margin: 0 auto 2rem; max-width: 30rem; }
.closing .get-row { margin-bottom: 2.5rem; }

/* ============================== reveals ============================== */

/* Guarded by .js: if the script never runs, nothing is ever hidden. */
.js .rise {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.js .rise.seen { opacity: 1; transform: none; }
.js .rise.seen.d1 { transition-delay: 0.08s; }
.js .rise.seen.d2 { transition-delay: 0.16s; }
.js .rise.seen.d3 { transition-delay: 0.24s; }

/* =============================== footer =============================== */

footer {
  border-top: 1px solid var(--line);
  padding: clamp(2.5rem, 6vw, 4rem) var(--gutter) 3.5rem;
}

.footer-inner {
  max-width: var(--wide);
  margin: 0 auto;
  display: grid;
  gap: 2rem clamp(1.5rem, 5vw, 4rem);
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  font-size: 0.875rem;
  color: var(--tertiary);
}

.footer-inner h2 {
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
  font-weight: 600;
  margin: 0 0 0.85rem;
}

.footer-inner ul { list-style: none; padding: 0; margin: 0; }
.footer-inner li { margin-bottom: 0.5rem; }

footer a {
  color: var(--secondary);
  border-bottom: none;
  display: inline-block;
  padding-block: 0.3rem;
}
footer a:hover { color: var(--primary); }

.colophon {
  max-width: var(--wide);
  margin: clamp(2rem, 5vw, 3rem) auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  font-size: 0.8125rem;
  color: var(--faint);
}
.colophon .mark { display: inline-flex; align-items: center; gap: 0.5rem; }
.colophon img { width: 18px; height: 18px; border-radius: 5px; }
.colophon .spacer { flex: 1 1 2rem; }

/* ============================= courtesies ============================= */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .orb, .phase::after { animation: none; }
  .orb { opacity: 0.85; transform: translate(-50%, -50%); }
  .trace { animation: none; stroke-dashoffset: 0; }
  .trace-label { animation: none; opacity: 1; }
  .js .rise { opacity: 1; transform: none; transition: none; }
  .badge, .mast .get { transition: none; }
}

/* A phone on its side, or any short window: the hero stops trying to fill a
   screen that is 390 points tall, so the badge stays above the fold. */
@media (max-height: 34rem) and (orientation: landscape) {
  .hero { min-height: 0; padding-block: 1rem 2.5rem; }
  .instrument { max-height: 16vh; max-height: 16svh; margin-bottom: 0.5rem; }
  .hero h1 { font-size: clamp(1.75rem, 1.1rem + 2.6vw, 2.5rem); margin-bottom: 0.6rem; }
  .hero .lede { margin-bottom: 1rem; font-size: 1rem; max-width: 30rem; }
  .band { padding-block: clamp(3rem, 8vw, 5rem); }
}

@media (max-width: 30rem) {
  .mast nav { gap: 0.85rem; font-size: 0.875rem; }
  /* The sticky pill keeps its width even while invisible, so that nothing
     jumps when it arrives, which is worth a quarter of a masthead on a
     desktop and far too much of one on a phone. The badge is in the hero and
     again at the foot of the page; on a narrow screen that is enough. */
  .js .mast .get { display: none; }
  .phase { padding-left: 2.5rem; }
  .badge img { height: 44px; }
}

/* On a narrow phone the masthead keeps the mark, the button and one link. */
@media (max-width: 25rem) {
  .mast .home span { display: none; }
  .mast nav .drop { display: none; }
}

::selection { background: oklch(0.74 0.10 282 / 0.35); color: #fff; }

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

/* A text page opens straight on its title; give it air under the masthead,
   and keep its headings smaller than the ones the home page shouts with. */
.page { padding: clamp(2.5rem, 7vw, 4rem) var(--gutter) clamp(4rem, 10vw, 7rem); }
.page h1 { font-size: clamp(2rem, 1.4rem + 2.4vw, 3rem); margin-bottom: 0.75rem; }
.page h2 {
  font-size: 1.125rem;
  letter-spacing: -0.015em;
  margin: 2.75rem 0 0.75rem;
}
.page h2:first-of-type { margin-top: 2.25rem; }

@media print {
  body::before, .mast, footer { display: none; }
  body { background: #fff; color: #000; }
  a { color: #000; }
}