@font-face {
  font-family: "Bricolage";
  src: url("/fonts/bricolage.woff2") format("woff2-variations");
  font-weight: 200 800;
  font-display: swap;
}
@font-face {
  font-family: "Instrument Sans";
  src: url("/fonts/instrument-sans.woff2") format("woff2-variations");
  font-weight: 400 700;
  font-display: swap;
}

:root {
  --paper: oklch(97.2% 0.012 85);
  --paper-2: oklch(93.8% 0.02 85);
  --ink: oklch(26% 0.04 165);
  --ink-2: oklch(42% 0.035 165);
  --ink-3: oklch(55% 0.03 165);
  --line: oklch(86% 0.022 110);
  --marker: oklch(66% 0.17 45);
  --marker-ink: oklch(50% 0.15 42);
  --bezel: oklch(30% 0.02 165);
  --bezel-2: oklch(38% 0.025 165);
  --lcd: oklch(86% 0.025 125);
  --lcd-ink: oklch(22% 0.02 140);

  --font-display: "Bricolage", "Iowan Old Style", Georgia, serif;
  --font-body: "Instrument Sans", "Helvetica Neue", Helvetica, sans-serif;

  --step--1: clamp(0.83rem, 0.8rem + 0.15vw, 0.9rem);
  --step-0: clamp(1rem, 0.96rem + 0.2vw, 1.1rem);
  --step-1: clamp(1.2rem, 1.1rem + 0.5vw, 1.45rem);
  --step-2: clamp(1.5rem, 1.3rem + 1vw, 2.1rem);
  --step-3: clamp(2.1rem, 1.6rem + 2.4vw, 3.6rem);
  --step-4: clamp(2.8rem, 1.9rem + 4.4vw, 5.6rem);

  --gutter: clamp(1rem, 0.5rem + 3vw, 3rem);
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: oklch(20% 0.02 165);
    --paper-2: oklch(24% 0.025 165);
    --ink: oklch(94% 0.015 85);
    --ink-2: oklch(82% 0.02 90);
    --ink-3: oklch(70% 0.02 100);
    --line: oklch(34% 0.025 165);
    --marker: oklch(72% 0.16 48);
    --marker-ink: oklch(78% 0.13 50);
    --bezel: oklch(14% 0.015 165);
    --bezel-2: oklch(30% 0.02 165);
  }
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img,
svg {
  display: block;
  max-width: 100%;
}
a {
  color: var(--marker-ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}
a:hover {
  text-decoration-thickness: 2px;
}
:focus-visible {
  outline: 2px solid var(--marker);
  outline-offset: 3px;
  border-radius: 2px;
}
.skip {
  position: absolute;
  left: -999px;
}
.skip:focus {
  left: var(--gutter);
  top: 0.5rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.8rem;
  z-index: 10;
}

.wrap {
  width: min(100% - 2 * var(--gutter), 72rem);
  margin-inline: auto;
}

/* ---------- header ---------- */
.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1.4rem;
  border-bottom: 1px solid var(--line);
}
.wordmark {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--step-1);
  letter-spacing: -0.02em;
  color: var(--ink);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.wordmark::before {
  content: "";
  width: 0.55em;
  height: 0.55em;
  border-radius: 50%;
  background: var(--marker);
  box-shadow: 0.32em 0 0 -0.12em var(--ink);
  margin-right: 0.3em;
}
.site-nav {
  display: flex;
  gap: clamp(0.9rem, 2vw, 1.8rem);
  font-size: var(--step--1);
}
.site-nav a {
  color: var(--ink-2);
  text-decoration: none;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--marker);
}

/* ---------- hero ---------- */
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 6rem);
  padding-block: clamp(3rem, 9vw, 7.5rem) clamp(3rem, 7vw, 6rem);
}
.eyebrow {
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--marker-ink);
  margin: 0 0 1.2rem;
}
h1,
h2,
h3 {
  font-family: var(--font-display);
  letter-spacing: -0.025em;
  line-height: 1.05;
  margin: 0;
  text-wrap: balance;
}
h1 {
  font-size: var(--step-4);
  font-weight: 750;
}
h1 em {
  font-style: normal;
  color: var(--marker-ink);
}
.lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-2);
  max-width: 34ch;
  margin: 1.6rem 0 0;
  text-wrap: pretty;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-top: 2.2rem;
  font-size: var(--step--1);
  color: var(--ink-2);
}
.status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--marker);
  animation: pulse 2.4s var(--ease-out) infinite;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 color-mix(in oklch, var(--marker) 60%, transparent);
  }
  100% {
    box-shadow: 0 0 0 0.6rem color-mix(in oklch, var(--marker) 0%, transparent);
  }
}

/* ---------- watch ---------- */
.watch {
  --size: min(100%, 22rem);
  width: var(--size);
  aspect-ratio: 1;
  justify-self: center;
  position: relative;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 25%, var(--bezel-2), var(--bezel) 60%);
  padding: 9%;
  box-shadow:
    0 2.2rem 3rem -1.6rem color-mix(in oklch, var(--ink) 55%, transparent),
    inset 0 0 0 2px color-mix(in oklch, var(--paper) 8%, transparent);
  rotate: -4deg;
}
.watch::before,
.watch::after {
  /* buttons */
  content: "";
  position: absolute;
  width: 6%;
  height: 11%;
  background: var(--bezel);
  border-radius: 0.3rem;
  z-index: -1;
}
.watch::before {
  left: -3.5%;
  top: 30%;
}
.watch::after {
  right: -3.5%;
  top: 30%;
  background: var(--marker);
}
.screen {
  position: relative;
  height: 100%;
  border-radius: 50%;
  background: var(--lcd);
  color: var(--lcd-ink);
  display: grid;
  align-content: center;
  justify-items: center;
  text-align: center;
  font-family: var(--font-display);
  overflow: hidden;
  font-variant-numeric: tabular-nums;
  container-type: inline-size;
}
.screen .sub {
  /* Instinct's signature sub-window */
  position: absolute;
  top: 4%;
  right: 12%;
  width: 24%;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--lcd-ink);
  color: var(--lcd);
  display: grid;
  place-items: center;
  font-size: 7cqi;
  font-weight: 700;
  line-height: 1;
}
.screen .label {
  font-size: 6.2cqi;
  font-weight: 600;
  letter-spacing: 0.08em;
  margin-top: 22%;
}
.screen .big {
  font-size: 17cqi;
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1;
  margin: 2% 0 3%;
}
.screen .pace {
  font-size: 8.5cqi;
  font-weight: 600;
}
.screen .bar {
  width: 62%;
  height: 4cqi;
  border: 0.6cqi solid var(--lcd-ink);
  border-radius: 99px;
  margin-top: 6%;
  overflow: hidden;
}
.screen .bar span {
  display: block;
  height: 100%;
  width: 42%;
  background: var(--lcd-ink);
  transform-origin: left;
  animation: fill 2.4s 0.6s var(--ease-out) both;
}
.screen .step {
  font-size: 5.6cqi;
  font-family: var(--font-body);
  font-weight: 600;
  margin-top: 3%;
  opacity: 0.8;
}
@keyframes fill {
  from {
    transform: scaleX(0);
  }
}

/* ---------- sections ---------- */
section {
  padding-block: clamp(3rem, 8vw, 6.5rem);
  border-top: 1px solid var(--line);
}
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--gutter);
  align-items: start;
}
h2 {
  font-size: var(--step-3);
  font-weight: 700;
}
.kicker {
  font-size: var(--step--1);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-3);
  padding-top: 0.9em;
}

.steps {
  list-style: none;
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  padding: 0;
  display: grid;
  gap: clamp(1.8rem, 4vw, 3rem);
  counter-reset: step;
}
.steps li {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--gutter);
  counter-increment: step;
}
.steps li::before {
  content: "0" counter(step);
  font-family: var(--font-display);
  font-size: var(--step-3);
  font-weight: 300;
  line-height: 1;
  color: var(--marker);
  font-variant-numeric: tabular-nums;
}
.steps h3 {
  font-size: var(--step-2);
  font-weight: 650;
  margin-bottom: 0.5rem;
}
.steps p {
  margin: 0;
  color: var(--ink-2);
  max-width: 52ch;
}

.rules {
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  padding: 0;
  list-style: none;
  columns: 2 22rem;
  column-gap: var(--gutter);
}
.rules li {
  break-inside: avoid;
  padding: 1.1rem 0 1.3rem;
  border-top: 1px solid var(--line);
}
.rules strong {
  display: block;
  font-family: var(--font-display);
  font-size: var(--step-1);
  font-weight: 650;
  letter-spacing: -0.015em;
  line-height: 1.25;
  margin-bottom: 0.3rem;
}
.rules span {
  color: var(--ink-2);
}

.data {
  background: var(--paper-2);
  border-top: 0;
  padding-inline: clamp(1.1rem, 4vw, 3rem);
  margin-inline: calc(-1 * clamp(0rem, 2vw, 1.5rem));
  border-radius: 0.6rem;
}
.data + section {
  border-top: 0;
}
.data dl {
  margin: clamp(2rem, 5vw, 3.5rem) 0 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 0 var(--gutter);
}
.data dt {
  font-family: var(--font-display);
  font-weight: 650;
  font-size: var(--step-1);
  padding: 1.1rem 0;
  border-top: 1px solid var(--line);
}
.data dd {
  margin: 0;
  padding: 1.2rem 0;
  border-top: 1px solid var(--line);
  color: var(--ink-2);
}
.data dd p {
  margin: 0 0 0.6rem;
}
.data .never {
  color: var(--ink);
  font-weight: 600;
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: var(--gutter);
}
.contact p {
  margin: 0;
  font-size: var(--step-1);
  color: var(--ink-2);
  max-width: 40ch;
}
.contact a {
  font-family: var(--font-display);
  font-weight: 650;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2rem 3rem;
  font-size: var(--step--1);
  color: var(--ink-3);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
}
.site-footer p {
  margin: 0;
  max-width: 60ch;
}
.site-footer nav {
  display: flex;
  gap: 1.2rem;
}
.site-footer a {
  color: var(--ink-2);
}

/* ---------- long-form (privacy, terms) ---------- */
.doc {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2.4fr);
  gap: var(--gutter);
  padding-block: clamp(2.5rem, 7vw, 5.5rem);
}
.doc-aside {
  font-size: var(--step--1);
  color: var(--ink-3);
}
.doc-aside nav {
  position: sticky;
  top: 1.5rem;
  display: grid;
  gap: 0.45rem;
}
.doc-aside a {
  color: var(--ink-2);
  text-decoration: none;
}
.doc-aside a:hover {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--marker);
}
.doc article {
  max-width: 66ch;
}
.doc h1 {
  font-size: var(--step-3);
}
.doc .meta {
  color: var(--ink-3);
  font-size: var(--step--1);
  margin: 0.8rem 0 2.2rem;
}
.doc .summary {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-2);
  margin: 0 0 1rem;
  text-wrap: pretty;
}
.doc h2 {
  font-size: var(--step-2);
  margin: 3rem 0 0.8rem;
  scroll-margin-top: 1.5rem;
}
.doc h3 {
  font-size: var(--step-1);
  margin: 1.6rem 0 0.4rem;
}
.doc p,
.doc li {
  text-wrap: pretty;
}
.doc ul {
  padding-left: 1.2rem;
}
.doc li {
  margin-bottom: 0.4rem;
}
.doc li::marker {
  color: var(--marker);
}
.doc table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--step--1);
  margin: 1rem 0;
}
.doc th,
.doc td {
  text-align: left;
  vertical-align: top;
  padding: 0.7rem 0.8rem 0.7rem 0;
  border-top: 1px solid var(--line);
}
.doc th {
  font-weight: 600;
  color: var(--ink);
}
.doc td {
  color: var(--ink-2);
}
.table-scroll {
  overflow-x: auto;
}
.callout {
  background: var(--paper-2);
  padding: 1rem 1.2rem;
  border-radius: 0.4rem;
  margin: 1.4rem 0;
}

/* ---------- 404 ---------- */
.lost {
  padding-block: clamp(4rem, 14vw, 10rem);
}
.lost p {
  font-size: var(--step-1);
  color: var(--ink-2);
}

/* ---------- entrance ---------- */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    animation: rise 0.9s var(--ease-out) both;
  }
  .reveal:nth-child(2) {
    animation-delay: 0.08s;
  }
  .reveal:nth-child(3) {
    animation-delay: 0.16s;
  }
  .reveal:nth-child(4) {
    animation-delay: 0.24s;
  }
  .watch.reveal {
    animation: rise-watch 1.1s 0.2s var(--ease-out) both;
  }
}
@media (prefers-reduced-motion: reduce) {
  .screen .bar span,
  .status::before {
    animation: none;
  }
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(0.9rem);
  }
}
@keyframes rise-watch {
  from {
    opacity: 0;
    transform: translateY(1.5rem) rotate(6deg);
  }
}

/* ---------- responsive ---------- */
@media (max-width: 52rem) {
  .hero,
  .section-head,
  .steps li,
  .data dl,
  .contact,
  .doc {
    grid-template-columns: minmax(0, 1fr);
  }
  .hero {
    gap: 3rem;
  }
  .watch {
    --size: min(78vw, 18rem);
  }
  .steps li {
    gap: 0.4rem;
  }
  .data dt {
    padding-bottom: 0.2rem;
  }
  .data dd {
    border-top: 0;
    padding-top: 0;
  }
  .doc-aside nav {
    position: static;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1rem;
  }
  .kicker {
    padding-top: 0;
  }
}
@media (max-width: 30rem) {
  .site-header {
    flex-direction: column;
    gap: 0.6rem;
  }
}