:root {
  color-scheme: dark;
  --bg: #000000;
  --surface: #0c0c0c;
  --surface-2: #121212;
  --text: #ffffff;
  --text-soft: #e6e6ea;
  --muted: #b8b8be;
  --cyan: #00d4ff;
  --blue: #007bff;
  --ink: #041018;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(0, 212, 255, 0.4);
  --max: 1080px;
  --header: 4.5rem;
  --focus: #00d4ff;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(ellipse 90% 42% at 50% -12%, rgba(0, 212, 255, 0.14), transparent 58%),
    var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", Arial, sans-serif;
  font-size: 1.0625rem;
  line-height: 1.6;
}

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

a {
  color: var(--cyan);
}

a:hover {
  color: #7ae6ff;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: absolute;
  left: 1rem;
  top: 0;
  transform: translateY(-120%);
  background: var(--cyan);
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  padding: 0.7rem 1rem;
  border-radius: 0 0 0.5rem 0.5rem;
  z-index: 30;
}

.skip:focus {
  transform: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(0, 0, 0, 0.92);
  border-bottom: 1px solid var(--line);
}

.site-header::after {
  content: "";
  display: block;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--cyan), var(--blue), transparent);
}

.header-inner,
.wrap,
.site-footer .wrap {
  width: min(var(--max), calc(100% - 2rem));
  margin-inline: auto;
}

.header-inner {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.75rem 0 0.35rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  width: fit-content;
}

.brand img {
  display: block;
  width: 156px;
  height: auto;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem 0.25rem;
  list-style: none;
  margin: 0;
  padding: 0 0 0.35rem;
}

.nav-list a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0.35rem 0.7rem;
  color: var(--text);
  text-decoration: none;
  border-radius: 0.55rem;
  font-size: 0.98rem;
}

.nav-list a:hover,
.nav-list a:focus-visible {
  color: var(--cyan);
  background: rgba(0, 212, 255, 0.08);
}

.nav-list a[aria-current="page"] {
  color: var(--cyan);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.4rem;
}

.hero,
.section,
.page {
  padding: 2.25rem 0;
}

.hero {
  padding-top: 2.75rem;
}

.hero h1,
.page h1 {
  margin: 0;
  font-size: clamp(2.35rem, 7vw, 4.4rem);
  line-height: 0.98;
  letter-spacing: -0.035em;
  font-weight: 700;
}

h1 .accent {
  color: var(--cyan);
}

.tagline {
  margin: 1rem 0 0;
  color: var(--cyan);
  font-size: clamp(1.15rem, 2.4vw, 1.45rem);
  font-weight: 600;
  letter-spacing: 0.01em;
}

.lede {
  max-width: 40rem;
  margin: 1.1rem 0 0;
  color: var(--text-soft);
  font-size: 1.125rem;
  line-height: 1.65;
}

.availability {
  margin: 1.5rem 0 0;
  color: var(--muted);
  font-size: 0.98rem;
}

.store-slot {
  margin-top: 0.25rem;
}

.store-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.85rem;
}

.store-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.65rem 1.1rem;
  border: 1px solid var(--line-strong);
  border-radius: 0.8rem;
  color: var(--text);
  background: #070707;
  text-decoration: none;
  font-weight: 700;
}

.store-link:hover {
  border-color: var(--cyan);
  color: var(--text);
}

.section h2,
.page h2 {
  margin: 0 0 1rem;
  font-size: clamp(1.45rem, 3vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.8rem;
}

.card,
.notice,
.support-panel,
.draft-note {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.card {
  padding: 1.15rem 1.15rem 1.2rem;
}

.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  line-height: 1.3;
}

.card p,
.notice p,
.support-panel p {
  margin: 0;
  color: var(--muted);
}

.card p + p,
.notice p + p,
.support-panel p + p {
  margin-top: 0.75rem;
}

.notice,
.support-panel {
  padding: 1.2rem 1.15rem;
}

.notice {
  border-color: rgba(0, 212, 255, 0.35);
  background: rgba(0, 212, 255, 0.06);
}

.notice p,
.support-panel p {
  color: var(--text-soft);
  max-width: 46rem;
}

.notice a,
.support-panel a,
.prose a,
.page a {
  text-underline-offset: 0.18em;
}

.stack {
  display: grid;
  gap: 1.5rem;
}

.page {
  padding-top: 2rem;
  padding-bottom: 3.5rem;
}

.page-intro {
  max-width: 42rem;
  margin-bottom: 1.25rem;
}

.meta {
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.nowrap {
  white-space: nowrap;
}

.draft-note {
  max-width: 42rem;
  margin: 0 0 1.5rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid var(--cyan);
  color: var(--muted);
}

.draft-note p {
  margin: 0;
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin: 2rem 0 0.55rem;
  font-size: 1.28rem;
}

.prose p,
.prose li {
  color: var(--text-soft);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.prose p {
  margin: 0 0 1rem;
}

.topics {
  margin: 0.4rem 0 0;
  padding-left: 1.2rem;
}

.topics li {
  margin: 0.45rem 0;
  padding-left: 0.15rem;
}

.topics li::marker {
  color: var(--cyan);
}

.support-email {
  margin: 0.4rem 0 0;
  font-style: normal;
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  font-weight: 700;
}

.support-email a {
  color: var(--cyan);
}

.page-disclaimer .prose p {
  font-size: 1.125rem;
  line-height: 1.75;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2rem 0 2.4rem;
  background: #050505;
}

.footer-brand {
  margin: 0;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.footer-tagline {
  margin: 0.35rem 0 1rem;
  color: var(--muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.9rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.copy {
  margin: 0.8rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (min-width: 720px) {
  .header-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 0.55rem;
    padding-bottom: 0.45rem;
  }

  .nav-list {
    justify-content: flex-end;
    padding-bottom: 0;
  }

  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero,
  .section {
    padding: 3.25rem 0;
  }
}

@media (min-width: 1040px) {
  .brand img {
    width: 176px;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

@media print {
  body {
    background: #fff;
    color: #111;
  }

  .site-header,
  .skip,
  .site-footer {
    position: static;
    background: #fff;
    color: #111;
  }

  .site-header::after {
    display: none;
  }

  a,
  .tagline,
  h1 .accent,
  .nav-list a,
  .nav-list a[aria-current="page"] {
    color: #111;
  }

  .card,
  .notice,
  .support-panel,
  .draft-note {
    background: #fff;
    color: #111;
    border-color: #bbb;
  }

  .card p,
  .notice p,
  .prose p,
  .muted,
  .meta,
  .draft-note {
    color: #222;
  }
}