:root {
  --color-paper: oklch(0% 0 0);
  --color-surface: oklch(16% 0.004 286);
  --color-surface-raised: oklch(19% 0.004 286);
  --color-surface-dim: oklch(11.5% 0.003 286);
  --color-ink-strong: oklch(98% 0.002 286);
  --color-ink: oklch(92% 0.003 286);
  --color-ink-soft: oklch(78% 0.004 286);
  --color-muted: oklch(68% 0.004 286);
  --color-footer: oklch(60% 0.004 286);
  --color-rule: oklch(100% 0 0 / 0.08);
  --color-rule-soft: oklch(100% 0 0 / 0.06);
  --color-rule-strong: oklch(100% 0 0 / 0.1);
  --color-nav: oklch(15% 0.004 286 / 0.72);
  --color-light-control: oklch(94.5% 0.003 286);
  --color-light-control-hover: oklch(99% 0.001 286);
  --color-light-control-ink: oklch(15% 0.004 286);
  --color-hero-dim: oklch(100% 0 0 / 0.72);
  --color-hero-vignette: oklch(100% 0 0 / 0.095);
  --color-transparent: oklch(0% 0 0 / 0);
  --color-shadow: oklch(0% 0 0 / 0.48);
  --color-glow: oklch(100% 0 0 / 0.12);
  --mask-solid: oklch(0% 0 0);
  --mask-soft: oklch(0% 0 0 / 0.82);
  --mask-clear: oklch(0% 0 0 / 0);
  --color-accent: oklch(65.783% 0.1822 260.74);
  --color-accent-ink: oklch(14.574% 0.00428 285.86);
  --color-focus: oklch(72% 0.2 260.74);
  --color-pass: oklch(75.632% 0.18308 150.16);

  --font-display: "Instrument Sans", "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-body: -apple-system, "Hiragino Sans", "Noto Sans JP", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", ui-monospace, "Menlo", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-md: clamp(1.0625rem, 0.4vw + 1rem, 1.1875rem);
  --text-lg: clamp(1.25rem, 0.8vw + 1rem, 1.5rem);
  --text-xl: clamp(1.75rem, 2.5vw + 1rem, 2.75rem);
  --text-display: clamp(2.25rem, 5vw + 0.75rem, 4.5rem);
  --text-price: clamp(3.75rem, 7vw, 5.5rem);

  --space-3xs: 0.125rem;
  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 7.5rem;
  --space-5xl: 9rem;

  --page-gutter: clamp(1rem, 4vw, 3rem);
  --content-max: 80rem;
  --measure: 42rem;
  --article-measure: 45rem;
  --header-height: 3.5rem;
  --control-height: 2.75rem;
  --rule-hair: 1px;
  --radius-panel: 0.75rem;
  --radius-card: 0.625rem;
  --radius-small: 0.5rem;
  --radius-nav: 1.5rem;
  --radius-pill: 999px;

  --dur-short: 160ms;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --z-base: 1;
  --z-raised: 10;
  --z-sticky: 200;
  --z-sticky-nav: 300;
}

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

html,
body {
  overflow-x: clip;
}

html {
  scroll-behavior: smooth;
  background: var(--color-paper);
}

body {
  min-width: 20rem;
  margin: 0;
  color: var(--color-ink);
  background: var(--color-paper);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.8;
  line-break: strict;
  text-wrap: pretty;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1,
h2,
h3,
p,
li,
dt,
dd,
small,
summary,
figcaption,
.purchase-gate span,
.purchase-gate strong {
  word-break: auto-phrase;
}

a {
  color: inherit;
  text-decoration-thickness: var(--rule-hair);
  text-underline-offset: 0.24em;
  transition: color var(--dur-short) var(--ease-out);
}

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: var(--space-2xs);
}

a:active,
summary:active {
  color: var(--color-accent);
}

a[aria-disabled="true"],
summary[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.5;
  pointer-events: none;
}

h1,
h2,
h3,
p,
figure,
figcaption,
dl,
dd {
  margin: 0;
}

h1,
h2,
h3 {
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--color-ink-strong);
  font-family: var(--font-display);
  font-style: normal;
  text-wrap: balance;
}

h2 {
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.04em;
}

h3 {
  font-size: var(--text-lg);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.025em;
}

.shell {
  width: min(100%, var(--content-max));
  margin-inline: auto;
  padding-inline-start: max(var(--page-gutter), env(safe-area-inset-left));
  padding-inline-end: max(var(--page-gutter), env(safe-area-inset-right));
}

.skip-link {
  position: fixed;
  z-index: var(--z-sticky);
  inset-block-start: var(--space-md);
  inset-inline-start: var(--space-md);
  min-height: var(--control-height);
  padding: var(--space-xs) var(--space-md);
  transform: translateY(-200%);
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: var(--radius-small);
  color: var(--color-ink-strong);
  background: var(--color-surface-raised);
  white-space: nowrap;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: var(--z-sticky-nav);
  inset-block-start: var(--space-md);
  margin-block-start: var(--space-md);
  padding-inline-start: max(var(--page-gutter), env(safe-area-inset-left));
  padding-inline-end: max(var(--page-gutter), env(safe-area-inset-right));
}

.header-pill {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-height: var(--header-height);
  padding: var(--space-2xs) var(--space-xs) var(--space-2xs) var(--space-md);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-nav);
  background: var(--color-nav);
  box-shadow: 0 0.75rem 2.5rem var(--color-shadow);
  -webkit-backdrop-filter: blur(20px);
  backdrop-filter: blur(20px);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
  color: var(--color-ink-strong);
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: 700;
  letter-spacing: -0.035em;
  text-decoration: none;
  white-space: nowrap;
}

.header-actions,
.site-nav {
  display: flex;
  align-items: center;
}

.header-actions {
  gap: var(--space-md);
}

.site-nav {
  display: none;
  gap: var(--space-lg);
}

.site-nav a,
.release-label,
.back-link,
.footer-links a {
  white-space: nowrap;
}

.site-nav a,
.release-label,
.back-link {
  min-height: var(--control-height);
  align-items: center;
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 500;
}

.site-nav a,
.back-link {
  display: inline-flex;
  text-decoration: none;
}

.release-label {
  display: inline-flex;
  justify-content: center;
  min-height: 2.5rem;
  padding-inline: var(--space-md);
  border: var(--rule-hair) solid var(--color-light-control);
  border-radius: var(--radius-pill);
  color: var(--color-light-control-ink);
  background: var(--color-light-control);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0;
}

.hero {
  position: relative;
  padding-block: clamp(4rem, 7vw, 6rem) var(--space-5xl);
}

.hero::before {
  position: absolute;
  z-index: var(--z-base);
  inset: calc(var(--space-5xl) * -1) 0 auto;
  height: 52rem;
  background: radial-gradient(ellipse 46% 38% at 50% 34%, var(--color-hero-vignette), var(--color-transparent) 72%);
  content: "";
  pointer-events: none;
}

.hero::after {
  position: absolute;
  z-index: var(--z-base);
  inset: calc(var(--header-height) * -1 - var(--space-lg)) calc(50% - 50vw) auto;
  height: min(120vw, 64rem);
  background: url("assets/hero-bg.jpg") center top / cover no-repeat;
  content: "";
  opacity: 0.5;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to bottom, var(--mask-solid) 45%, var(--mask-clear) 96%);
  mask-image: linear-gradient(to bottom, var(--mask-solid) 45%, var(--mask-clear) 96%);
}

.hero-copy,
.connection-figure {
  position: relative;
  z-index: var(--z-raised);
}

.hero-copy {
  width: min(100%, 54rem);
  margin-inline: auto;
  text-align: center;
}

.product-type {
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.hero h1 {
  margin-block: var(--space-lg);
  color: var(--color-ink-strong);
  background: linear-gradient(to bottom, var(--color-ink-strong), var(--color-hero-dim));
  background-clip: text;
  font-size: var(--text-display);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero h1 br {
  display: block;
}

.hero h1 span {
  color: inherit;
  white-space: nowrap;
}

.hero-lede {
  max-width: 44rem;
  margin-inline: auto;
  color: var(--color-muted);
  font-size: var(--text-md);
  line-height: 1.8;
  text-wrap: balance;
}

.hero-visual {
  position: relative;
  z-index: var(--z-raised);
  width: min(100%, 56rem);
  margin: var(--space-2xl) auto 0;
}

.device-duo {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  gap: clamp(1rem, 4vw, 3rem);
}

.device {
  --bezel: clamp(0.3rem, 0.9vw, 0.5rem);
  --corner: clamp(1.625rem, 5.2vw, 3.125rem);
  position: relative;
  overflow: clip;
  padding: var(--bezel);
  border: var(--rule-hair) solid oklch(42% 0.004 286);
  border-radius: var(--corner);
  background: oklch(24% 0.004 286);
  box-shadow: inset 0 0 0 var(--rule-hair) oklch(0% 0 0 / 0.9), 0 2rem 4.5rem var(--color-shadow);
}

.device::after {
  position: absolute;
  top: calc(var(--bezel) + 2.6%);
  left: 50%;
  width: 30%;
  aspect-ratio: 125 / 37;
  border-radius: var(--radius-pill);
  background: oklch(5% 0 0);
  content: "";
  transform: translateX(-50%);
  pointer-events: none;
}

.device img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: calc(var(--corner) - var(--bezel));
}

.device-main {
  width: min(46%, 19.5rem);
}

.device-sub {
  width: min(40%, 16.5rem);
  margin-block-start: clamp(2.5rem, 6vw, 5rem);
}

.remote-figure {
  width: min(100%, 52rem);
  margin: var(--space-xl) auto 0;
}

.route-diagram {
  --route-icon: clamp(3rem, 9vw, 4.5rem);
  display: flex;
  align-items: flex-start;
  gap: clamp(var(--space-xs), 2vw, var(--space-lg));
  padding: clamp(var(--space-lg), 5vw, var(--space-2xl)) clamp(var(--space-md), 5vw, var(--space-2xl));
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-panel);
  background: var(--color-surface-dim);
}

.route-node {
  display: grid;
  justify-items: center;
  gap: var(--space-3xs);
  text-align: center;
}

.route-icon {
  display: grid;
  place-items: center;
  width: var(--route-icon);
  aspect-ratio: 1;
  margin-block-end: var(--space-xs);
  border: var(--rule-hair) solid var(--color-rule-strong);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-ink-soft);
}

.route-icon svg {
  width: 44%;
  height: 44%;
}

.route-node strong {
  color: var(--color-ink);
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.4;
}

.route-node small {
  color: var(--color-muted);
  font-size: var(--text-xs);
  line-height: 1.4;
}

.route-link {
  position: relative;
  flex: 1;
  height: var(--rule-hair);
  margin-block-start: calc(var(--route-icon) / 2);
  background: var(--color-rule-strong);
}

.route-check {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 1.375rem;
  aspect-ratio: 1;
  border-radius: 50%;
  background: var(--color-pass);
  color: var(--color-accent-ink);
  transform: translate(-50%, -50%);
}

.route-check svg {
  width: 60%;
  height: 60%;
}

.remote-figure figcaption {
  margin-block-start: var(--space-sm);
  color: var(--color-muted);
  font-size: var(--text-sm);
  text-align: center;
  text-wrap: balance;
}

.nowrap {
  white-space: nowrap;
}

.hero-visual-note {
  margin-block-start: var(--space-lg);
  color: var(--color-footer);
  font-size: var(--text-xs);
  text-align: center;
}

@media (prefers-reduced-motion: no-preference) {
  .hero-visual {
    animation: hero-rise 900ms var(--ease-out) both;
    animation-delay: 120ms;
  }

  @keyframes hero-rise {
    from {
      opacity: 0;
      transform: translateY(1.25rem);
    }
  }
}

.hero-cta {
  display: grid;
  justify-items: center;
  gap: var(--space-xs);
  margin-block-start: var(--space-xl);
}

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  min-height: 3rem;
  padding: var(--space-sm) var(--space-lg);
  border: var(--rule-hair) solid var(--color-light-control);
  border-radius: var(--radius-pill);
  color: var(--color-light-control-ink);
  background: var(--color-light-control);
  box-shadow: 0 0 1.5rem var(--color-glow);
  transition: background-color var(--dur-short) var(--ease-out), box-shadow var(--dur-short) var(--ease-out);
}

.store-badge span {
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.store-badge small {
  padding-inline-start: var(--space-md);
  border-inline-start: var(--rule-hair) solid var(--color-shadow);
  color: var(--color-light-control-ink);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.store-caption {
  color: var(--color-footer);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  line-height: 1.7;
}

#features,
#price {
  scroll-margin-block-start: 6rem;
}

.connection-figure {
  width: min(100%, 58rem);
  margin-inline: auto;
  padding: var(--space-lg);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-panel);
  color: var(--color-ink);
  background: var(--color-surface-dim);
}

.connection-showcase {
  padding-block: 0 var(--space-5xl);
}

.connection-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block-end: var(--space-md);
  border-block-end: var(--rule-hair) solid var(--color-rule-soft);
  color: var(--color-muted);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.connection-header > span {
  color: var(--color-ink-soft);
}

.network-route {
  display: grid;
  grid-template-columns: max-content minmax(0.75rem, 1fr) max-content minmax(0.75rem, 1fr) max-content;
  align-items: center;
  padding-block: var(--space-lg);
  color: var(--color-ink-soft);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.network-route span {
  white-space: nowrap;
}

.network-route i {
  position: relative;
  display: block;
  height: var(--rule-hair);
  margin-inline: var(--space-xs);
  background: var(--color-rule-strong);
}

.network-route i::after {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 0;
  width: var(--space-xs);
  height: var(--space-xs);
  border-block-start: var(--rule-hair) solid var(--color-rule-strong);
  border-inline-end: var(--rule-hair) solid var(--color-rule-strong);
  content: "";
  transform: translateY(-50%) rotate(45deg);
}

.connection-fields {
  border-block-start: var(--rule-hair) solid var(--color-rule);
  font-family: var(--font-mono);
}

.connection-fields div {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1.3fr);
  gap: var(--space-md);
  padding-block: var(--space-sm);
  border-block-end: var(--rule-hair) solid var(--color-rule-soft);
}

.connection-fields dt {
  color: var(--color-muted);
  font-size: var(--text-xs);
}

.connection-fields dd {
  min-width: 0;
  color: var(--color-ink-strong);
  font-size: var(--text-sm);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}

.connection-diagnostics {
  display: grid;
  gap: var(--space-xs);
  margin-block-start: var(--space-lg);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.connection-diagnostics > div {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  min-width: 0;
  padding: var(--space-sm);
  border: var(--rule-hair) solid var(--color-rule-soft);
  border-radius: var(--radius-small);
  color: var(--color-ink-soft);
  background: var(--color-surface);
}

.diagnostic-pass {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-pass);
  font-size: var(--text-xs);
  letter-spacing: 0.04em;
}

.diagnostic-pass i {
  display: block;
  width: var(--space-xs);
  height: var(--space-xs);
  border-radius: 50%;
  background: var(--color-pass);
}

.figure-note {
  margin-block-start: var(--space-lg);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.section {
  padding-block: clamp(5rem, 10vw, 9rem);
}

.section-heading {
  display: grid;
  gap: var(--space-lg);
  margin-block-end: var(--space-2xl);
}

.section-heading p {
  max-width: var(--measure);
  color: var(--color-muted);
  font-size: var(--text-md);
}

.section-heading.compact {
  max-width: 50rem;
}

.label {
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 600;
}

.diagnostic-layout {
  display: grid;
  gap: var(--space-xl);
  padding-block-start: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule-soft);
}

.diagnostic-copy {
  min-width: 0;
}

.diagnostic-path {
  display: grid;
  gap: 0;
  margin: var(--space-lg) 0 0;
  padding: 0;
  list-style: none;
}

.diagnostic-path li {
  position: relative;
  display: grid;
  gap: var(--space-2xs);
  padding: var(--space-md) var(--space-md) var(--space-md) var(--space-lg);
  border-block-end: var(--rule-hair) solid var(--color-rule-soft);
}

.diagnostic-path li::before {
  position: absolute;
  inset-block-start: 1.6rem;
  inset-inline-start: 0;
  width: var(--space-xs);
  height: var(--space-xs);
  border-radius: 50%;
  background: var(--color-pass);
  content: "";
}

.diagnostic-path li > span {
  color: var(--color-ink-strong);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
}

.diagnostic-path li p {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.purchase-gate {
  align-self: start;
  padding: var(--space-xl);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  color: var(--color-ink);
  background: var(--color-surface-dim);
}

.purchase-gate > p {
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.purchase-gate strong {
  display: block;
  margin-block: var(--space-sm);
  color: var(--color-ink-strong);
  font-size: var(--text-lg);
  line-height: 1.4;
}

.purchase-gate span {
  display: block;
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.purchase-gate span.nowrap {
  display: inline;
  white-space: nowrap;
}

.feature-ledger {
  display: grid;
  gap: var(--space-sm);
}

.feature-ledger article {
  display: flex;
  min-width: 0;
  min-height: 13rem;
  flex-direction: column;
  justify-content: space-between;
  gap: var(--space-xl);
  padding: var(--space-lg);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  color: var(--color-ink);
  background: var(--color-surface-dim);
}

.feature-ledger article > div {
  display: grid;
  gap: var(--space-sm);
}

.feature-meta {
  color: var(--color-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.feature-ledger article > p {
  color: var(--color-muted);
  font-size: var(--text-sm);
  line-height: 1.75;
}

.price-section {
  border-block: var(--rule-hair) solid var(--color-rule-soft);
  color: var(--color-ink);
  background: var(--color-paper);
}

.price-layout {
  display: grid;
  gap: var(--space-2xl);
  padding-block: var(--space-4xl);
}

.price-layout > div:first-child {
  display: grid;
  align-content: start;
  gap: var(--space-md);
}

.price-detail {
  display: grid;
  gap: var(--space-lg);
}

.price {
  display: flex;
  align-items: baseline;
  gap: var(--space-md);
  color: var(--color-ink-strong);
  font-size: var(--text-price);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.06em;
}

.price small {
  color: var(--color-muted);
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: 0;
  white-space: nowrap;
}

.price-detail > p:not(.price),
.price-detail li {
  color: var(--color-muted);
}

.price-detail ul {
  display: grid;
  gap: var(--space-xs);
  margin: 0;
  padding-inline-start: var(--space-lg);
}

.price-note {
  margin-block-start: var(--space-md);
  color: var(--color-footer);
  font-size: var(--text-sm);
}

.compatibility {
  display: grid;
  gap: var(--space-2xl);
}

.compatibility-copy {
  display: grid;
  gap: var(--space-md);
  max-width: var(--measure);
}

.compatibility-copy > p:not(.label) {
  color: var(--color-muted);
}

.collaboration-call {
  color: var(--color-ink-soft) !important;
  font-weight: 600;
}

.compatibility-status {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  min-width: 12rem;
  align-self: end;
  padding-block: var(--space-lg);
  border-block: var(--rule-hair) solid var(--color-rule-soft);
}

.compatibility-status > span {
  width: var(--space-xs);
  height: var(--space-xs);
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-accent);
}

.compatibility-status p {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-lg);
  width: 100%;
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.compatibility-status strong {
  color: var(--color-ink-strong);
  font-size: var(--text-base);
}

.faq {
  padding-block-start: var(--space-3xl);
}

.faq-list {
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.faq-list details {
  border-block-end: var(--rule-hair) solid var(--color-rule);
}

.faq-list summary {
  position: relative;
  min-height: 4.5rem;
  padding: var(--space-lg) var(--space-xl) var(--space-lg) 0;
  color: var(--color-ink-strong);
  cursor: pointer;
  font-size: var(--text-md);
  font-weight: 600;
  list-style: none;
}

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

.faq-list summary::after {
  position: absolute;
  inset-block-start: 50%;
  inset-inline-end: 0;
  color: var(--color-muted);
  content: "+";
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 400;
  transform: translateY(-50%);
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details > div {
  max-width: var(--measure);
  padding-block-end: var(--space-lg);
}

.faq-list details p {
  color: var(--color-muted);
}

.faq-list details a,
.policy-document a {
  color: var(--color-accent);
}

.medical-note {
  padding-block: var(--space-2xl);
  border-block: var(--rule-hair) solid var(--color-rule);
  color: var(--color-ink);
  background: var(--color-surface-dim);
}

.medical-note-layout {
  display: grid;
  gap: var(--space-lg);
}

.medical-note h2 {
  font-size: var(--text-lg);
}

.medical-note p {
  max-width: var(--measure);
  color: var(--color-ink-soft);
  font-size: var(--text-sm);
}

.site-footer {
  display: grid;
  gap: var(--space-2xl);
  margin-block: var(--space-4xl) var(--space-lg);
  padding-block: var(--space-2xl) var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule-soft);
  color: var(--color-ink);
}

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

.footer-statement {
  color: var(--color-footer);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: -0.025em;
}

.footer-meta {
  display: grid;
  gap: var(--space-lg);
  padding-block-start: var(--space-lg);
  border-block-start: var(--rule-hair) solid var(--color-rule-soft);
  color: var(--color-footer);
  font-size: var(--text-sm);
}

.footer-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-lg);
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: var(--control-height);
  color: var(--color-footer);
}

.policy-main {
  max-width: calc(var(--article-measure) + (var(--page-gutter) * 2));
  padding-block: var(--space-5xl) var(--space-4xl);
}

.policy-hero {
  display: grid;
  gap: var(--space-lg);
  padding-block-end: var(--space-3xl);
}

.policy-hero h1 {
  color: var(--color-ink-strong);
  background: linear-gradient(to bottom, var(--color-ink-strong), var(--color-hero-dim));
  background-clip: text;
  font-size: var(--text-display);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.02em;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.policy-hero > p:last-child {
  max-width: var(--article-measure);
  color: var(--color-muted);
  font-size: var(--text-md);
}

.policy-document {
  max-width: var(--article-measure);
  color: var(--color-ink-soft);
}

.policy-document section {
  display: grid;
  gap: var(--space-md);
  padding-block: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule);
}

.policy-document h2 {
  color: var(--color-ink-strong);
  font-size: var(--text-lg);
}

.policy-data-list {
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-small);
  color: var(--color-ink);
  background: var(--color-surface-dim);
}

.policy-data-list > div {
  display: grid;
  gap: var(--space-xs);
  padding: var(--space-md);
  border-block-end: var(--rule-hair) solid var(--color-rule-soft);
}

.policy-data-list > div:last-child {
  border-block-end: 0;
}

.policy-data-list dt {
  color: var(--color-ink-strong);
  font-weight: 600;
}

.policy-data-list dd {
  color: var(--color-muted);
}

.policy-signoff {
  display: grid;
  gap: var(--space-xs);
  padding-block-start: var(--space-xl);
  border-block-start: var(--rule-hair) solid var(--color-rule);
  color: var(--color-muted);
  font-size: var(--text-sm);
}

.policy-footer {
  max-width: var(--content-max);
}

@media (hover: hover) and (pointer: fine) {
  a:hover {
    color: var(--color-accent);
  }

  .store-badge:hover,
  .release-label:hover {
    background: var(--color-light-control-hover);
    box-shadow: 0 0 1.75rem var(--color-glow);
  }

  summary:hover {
    color: var(--color-ink-soft);
  }
}

@media (min-width: 40rem) {
  .site-nav {
    display: flex;
  }

  .connection-figure {
    padding: var(--space-lg);
  }

  .connection-diagnostics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-ledger {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .feature-ledger article:first-child {
    grid-column: 1 / -1;
    justify-content: flex-start;
    gap: var(--space-sm);
  }

  .footer-meta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .footer-meta > p {
    grid-column: 1 / -1;
  }

  .policy-data-list > div {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: var(--space-lg);
  }
}

@media (min-width: 60rem) {
  .connection-diagnostics {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-md);
  }

  .connection-diagnostics > div:not(:last-child)::after {
    position: absolute;
    z-index: var(--z-raised);
    inset-block-start: 50%;
    inset-inline-end: 0;
    padding-inline: var(--space-2xs);
    color: var(--color-muted);
    background: var(--color-surface);
    content: "→";
    transform: translate(75%, -50%);
  }

  .section-heading {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    align-items: end;
  }

  .section-heading.compact {
    grid-template-columns: minmax(0, 1fr);
  }

  .diagnostic-layout {
    grid-template-columns: minmax(0, 1.45fr) minmax(18rem, 0.55fr);
    align-items: start;
  }

  .feature-ledger {
    grid-template-columns: repeat(12, minmax(0, 1fr));
    grid-auto-rows: minmax(8.5rem, auto);
  }

  .feature-ledger article {
    grid-column: span 4;
  }

  .feature-ledger article:first-child {
    grid-column: span 7;
    grid-row: span 2;
    min-height: 19rem;
    padding: var(--space-xl);
  }

  .feature-ledger article:nth-child(2),
  .feature-ledger article:nth-child(3) {
    grid-column: span 5;
  }

  .price-layout {
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: var(--space-3xl);
  }

  .compatibility {
    grid-template-columns: minmax(0, 1.4fr) minmax(16rem, 0.6fr);
    align-items: end;
  }

  .medical-note-layout {
    grid-template-columns: minmax(10rem, 0.4fr) minmax(0, 1.6fr);
    align-items: start;
  }

  .site-footer {
    grid-template-columns: minmax(16rem, 0.7fr) minmax(0, 1.3fr);
    align-items: end;
  }

  .footer-meta {
    grid-template-columns: minmax(0, 0.7fr) auto minmax(0, 1fr);
    align-items: end;
  }

  .footer-meta > p {
    grid-column: auto;
    text-align: end;
  }
}

@media (min-width: 90rem) {
  :root {
    --content-max: 84rem;
  }
}

@media (pointer: coarse) {
  a,
  summary {
    min-height: var(--control-height);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  a {
    transition: none;
  }

  .store-badge {
    transition: none;
  }
}

.feature-fields {
  display: grid;
  gap: 0;
  margin-top: var(--space-md);
  border: var(--rule-hair) solid var(--color-rule);
  border-radius: var(--radius-card);
  overflow: hidden;
}

.feature-fields-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem 1.1rem;
  font-size: var(--text-sm);
  color: var(--color-muted);
}

.feature-fields-row + .feature-fields-row {
  border-top: var(--rule-hair) solid var(--color-rule);
}

.feature-fields-row code {
  font-family: var(--font-mono, ui-monospace, "SF Mono", Menlo, monospace);
  color: var(--color-ink);
}