:root {
  --paper: #f4efe7;
  --card: #fbf8f2;
  --sand: #ebe4d6;
  --ink: #1f1a14;
  --ink-soft: #786b56;
  --rust: #c2442a;
  --rust-deep: #a53720;
  --line: rgba(60, 45, 25, 0.14);
  --line-strong: rgba(60, 45, 25, 0.28);

  --serif: 'Fraunces', 'Iowan Old Style', 'Palatino Linotype', Georgia, serif;
  --mono: 'DM Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.3125rem;
  --step-2: 1.75rem;
  --step-3: clamp(2rem, 3.4vw, 2.75rem);
  --step-4: clamp(2.75rem, 7vw, 5.5rem);

  --measure: 34rem;
  --page: 72rem;
  --gutter: clamp(1.25rem, 4vw, 3rem);
}

*,
*::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(--serif);
  font-size: var(--step-0);
  font-variation-settings: 'opsz' 14, 'SOFT' 50;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--rust-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--rust);
  outline-offset: 3px;
  border-radius: 4px;
}

h1,
h2,
h3 {
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.015em;
  margin: 0;
  text-wrap: balance;
}

p {
  margin: 0;
  text-wrap: pretty;
}

.skip {
  position: absolute;
  left: -999px;
  top: 0.75rem;
  background: var(--ink);
  color: var(--paper);
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  z-index: 10;
}

.skip:focus {
  left: 0.75rem;
}

.wrap {
  width: 100%;
  max-width: var(--page);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* Header */

.site-header {
  padding-block: 1.25rem;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--ink);
  text-decoration: none;
  font-size: 1.25rem;
  font-weight: 500;
  font-variation-settings: 'opsz' 36, 'SOFT' 50;
  letter-spacing: -0.01em;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  box-shadow: 0 0 0 1px var(--line);
}

.site-nav {
  display: flex;
  gap: 1.5rem;
  font-size: var(--step--1);
}

.site-nav a {
  color: var(--ink);
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current='page'] {
  color: var(--rust-deep);
  text-decoration: underline;
}

/* Hero */

.hero {
  padding-top: clamp(2.5rem, 7vw, 5.5rem);
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 5vw, 4.5rem);
  align-items: end;
}

.hero h1 {
  font-size: var(--step-4);
  font-weight: 450;
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
  letter-spacing: -0.035em;
  line-height: 0.98;
}

.hero-lede {
  margin-top: 1.75rem;
  max-width: 30rem;
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--ink-soft);
  font-variation-settings: 'opsz' 24, 'SOFT' 50;
}

.availability {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem 1.5rem;
  padding-bottom: clamp(2.5rem, 6vw, 4.5rem);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--paper);
  font-size: var(--step--1);
  font-weight: 500;
  text-decoration: none;
}

.pill-dot {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: var(--rust);
  box-shadow: 0 0 0 3px rgba(194, 68, 42, 0.28);
}

.availability a {
  font-size: var(--step--1);
}

.hero-phone {
  justify-self: center;
  width: min(100%, 19rem);
  margin-bottom: -7.5rem;
  position: relative;
  z-index: 2;
}

/* Phone frame */

.phone {
  border-radius: 2.6rem;
  padding: 0.55rem;
  background: var(--ink);
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08) inset,
    0 30px 60px -28px rgba(31, 26, 20, 0.55);
}

.phone img {
  border-radius: 2.1rem;
  width: 100%;
  aspect-ratio: 1320 / 2868;
  object-fit: cover;
  background: var(--card);
}

/* Tuning dial */

.dial {
  position: relative;
  background: var(--ink);
  color: var(--paper);
  padding-block: 9.5rem 2.25rem;
  user-select: none;
  -webkit-user-select: none;
}

.dial-scale {
  position: relative;
  height: 7.5rem;
  margin-inline: auto;
  max-width: calc(var(--page) + 8rem);
  padding-inline: var(--gutter);
  touch-action: pan-y;
  cursor: grab;
}

.dial-scale:active {
  cursor: grabbing;
}

.dial-scale svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}

.dial-tick {
  stroke: rgba(244, 239, 231, 0.32);
  stroke-width: 1;
}

.dial-tick.major {
  stroke: rgba(244, 239, 231, 0.7);
}

.dial-number {
  font-family: var(--mono);
  font-size: 11px;
  fill: rgba(244, 239, 231, 0.6);
  text-anchor: middle;
}

.dial-station {
  font-family: var(--serif);
  font-size: 14px;
  fill: rgba(244, 239, 231, 0.55);
  text-anchor: middle;
  transition: fill 200ms ease;
}

.dial-station.is-tuned {
  fill: var(--paper);
}

.dial-needle {
  position: absolute;
  top: -0.75rem;
  bottom: -0.75rem;
  width: 3px;
  margin-left: -1.5px;
  background: var(--rust);
  border-radius: 2px;
  box-shadow: 0 0 18px 2px rgba(194, 68, 42, 0.55);
  pointer-events: none;
}

.dial-readout {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-top: 1.75rem;
  font-size: var(--step--1);
  color: rgba(244, 239, 231, 0.6);
}

.dial-readout output {
  font-family: var(--mono);
  color: var(--paper);
}

.dial-readout output strong {
  font-family: var(--serif);
  font-weight: 500;
  margin-left: 0.6rem;
  color: var(--paper);
}

/* Sections */

.section {
  padding-block: clamp(4.5rem, 10vw, 8rem);
}

.section-head {
  max-width: var(--measure);
}

.section-head h2 {
  font-size: var(--step-3);
  font-variation-settings: 'opsz' 96, 'SOFT' 80;
  letter-spacing: -0.025em;
}

.section-head p {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: var(--step-1);
  line-height: 1.5;
}

/* Feature rows */

.features {
  display: grid;
  gap: clamp(4rem, 9vw, 7rem);
  margin-top: clamp(3rem, 7vw, 5rem);
}

.feature {
  display: grid;
  grid-template-columns: minmax(0, 15rem) minmax(0, 1fr);
  gap: clamp(2rem, 7vw, 6rem);
  align-items: center;
}

.feature:nth-child(even) {
  grid-template-columns: minmax(0, 1fr) minmax(0, 15rem);
}

.feature:nth-child(even) .feature-shot {
  order: 2;
}

.feature-text {
  max-width: var(--measure);
  border-top: 1px solid var(--line-strong);
  padding-top: 1.5rem;
}

.feature-text h3 {
  font-size: var(--step-2);
  font-variation-settings: 'opsz' 72, 'SOFT' 80;
  letter-spacing: -0.02em;
}

.feature-text p {
  margin-top: 0.9rem;
  color: var(--ink-soft);
}

.feature-shot .phone {
  border-radius: 2.1rem;
  padding: 0.45rem;
}

.feature-shot .phone img {
  border-radius: 1.75rem;
}

/* Import band */

.import {
  background: var(--sand);
}

.import-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(2.5rem, 7vw, 6rem);
  align-items: start;
}

.import-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

.import-steps li {
  counter-increment: step;
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 0.25rem 1rem;
  padding-block: 1.25rem;
  border-top: 1px solid var(--line-strong);
}

.import-steps li:last-child {
  border-bottom: 1px solid var(--line-strong);
}

.import-steps li::before {
  content: counter(step);
  font-family: var(--mono);
  font-size: var(--step--1);
  color: var(--rust-deep);
  padding-top: 0.2rem;
}

.import-steps strong {
  font-weight: 500;
  display: block;
}

.import-steps span {
  grid-column: 2;
  color: var(--ink-soft);
  font-size: var(--step--1);
  line-height: 1.55;
}

/* Privacy statement */

.promise {
  max-width: 46rem;
}

.promise p.big {
  font-size: var(--step-3);
  font-variation-settings: 'opsz' 96, 'SOFT' 100;
  letter-spacing: -0.02em;
  line-height: 1.18;
  font-weight: 400;
}

.promise p.small {
  margin-top: 1.5rem;
  color: var(--ink-soft);
  max-width: var(--measure);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem 3rem;
  font-size: var(--step--1);
  color: var(--ink-soft);
}

.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem 2rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
}

.site-footer a {
  color: var(--ink);
}

/* Document pages */

.doc {
  padding-block: clamp(2.5rem, 7vw, 5rem) clamp(4rem, 9vw, 7rem);
}

.doc-head {
  max-width: 40rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--line-strong);
}

.doc-head h1 {
  font-size: var(--step-4);
  font-weight: 450;
  font-variation-settings: 'opsz' 144, 'SOFT' 100;
  letter-spacing: -0.03em;
}

.doc-head p {
  margin-top: 1rem;
  color: var(--ink-soft);
  font-size: var(--step-1);
  line-height: 1.5;
}

.prose {
  max-width: 38rem;
  font-size: 1.125rem;
  line-height: 1.7;
}

.prose h2 {
  font-size: var(--step-2);
  font-variation-settings: 'opsz' 72, 'SOFT' 80;
  margin-top: 3rem;
  margin-bottom: 0.75rem;
}

.prose p + p,
.prose ul + p,
.prose p + ul {
  margin-top: 1rem;
}

.prose ul {
  padding-left: 1.2rem;
  margin: 0;
}

.prose li + li {
  margin-top: 0.6rem;
}

.prose li::marker {
  color: var(--rust);
}

.contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 2rem;
  margin-top: 2.5rem;
  max-width: 52rem;
}

.contact-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 1.5rem 1.6rem;
}

.contact-card h2 {
  font-size: var(--step-1);
  font-variation-settings: 'opsz' 36, 'SOFT' 80;
}

.contact-card p {
  margin-top: 0.5rem;
  color: var(--ink-soft);
  font-size: var(--step--1);
}

.contact-card a.email {
  display: inline-block;
  margin-top: 0.9rem;
  font-size: var(--step-1);
}

/* FAQ */

.faq {
  max-width: 44rem;
  margin-top: clamp(3rem, 7vw, 4.5rem);
}

.faq h2.faq-title {
  font-size: var(--step-3);
  font-variation-settings: 'opsz' 96, 'SOFT' 80;
  margin-bottom: 1.25rem;
}

.faq details {
  border-top: 1px solid var(--line-strong);
}

.faq details:last-of-type {
  border-bottom: 1px solid var(--line-strong);
}

.faq summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.5rem;
  padding-block: 1.15rem;
  font-size: var(--step-1);
  font-variation-settings: 'opsz' 30, 'SOFT' 60;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: '+';
  font-family: var(--mono);
  color: var(--rust-deep);
  font-size: 1.25rem;
  line-height: 1;
  flex-shrink: 0;
  transition: transform 180ms ease;
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq .answer {
  padding-bottom: 1.4rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

.faq .answer p + p {
  margin-top: 0.75rem;
}

/* Not found */

.lost {
  min-height: 60vh;
  display: grid;
  align-content: center;
}

/* Responsive */

@media (max-width: 52rem) {
  .hero-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .availability {
    padding-bottom: 1rem;
  }

  .hero-phone {
    width: min(78%, 17rem);
    margin-bottom: -6rem;
  }

  .dial {
    padding-top: 8rem;
  }

  .feature,
  .feature:nth-child(even) {
    grid-template-columns: minmax(0, 1fr);
    gap: 2rem;
  }

  .feature:nth-child(even) .feature-shot {
    order: 0;
  }

  .feature-shot {
    width: min(70%, 15rem);
  }

  .import-grid,
  .contact {
    grid-template-columns: minmax(0, 1fr);
  }

  .site-nav {
    gap: 1rem;
  }
}

@media (max-width: 30rem) {
  .dial-readout span {
    display: none;
  }
}

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