:root {
  color-scheme: light dark;
  --page: #f5f5f7;
  --surface: #ffffff;
  --ink: #1d1d1f;
  --secondary: #5f5f64;
  --tertiary: #6e6e73;
  --border: #d2d2d7;
  --accent: #006edb;
  --accent-hover: #005bb8;
  --warning-bg: #fff8e8;
  --warning-border: #a66c00;
  --code-bg: #eeeef0;
  --content-width: 960px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #151516;
    --surface: #202022;
    --ink: #f5f5f7;
    --secondary: #c2c2c7;
    --tertiary: #aeaeb3;
    --border: #48484a;
    --accent: #55aaff;
    --accent-hover: #80bfff;
    --warning-bg: #302918;
    --warning-border: #e1a527;
    --code-bg: #29292b;
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: 76px;
}

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-underline-offset: 0.18em; }
a:hover { color: var(--accent-hover); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, h3, p { margin-top: 0; }

h1 {
  margin-bottom: 16px;
  font-size: clamp(2.6rem, 6vw, 4rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

h2 {
  margin-bottom: 24px;
  font-size: 1.75rem;
  line-height: 1.2;
  letter-spacing: -0.025em;
}

h3 { font-size: 1rem; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.92em; }

.skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 14px;
  transform: translateY(-150%);
  border-radius: 7px;
  background: var(--ink);
  color: var(--page);
}

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

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid var(--border);
  background: var(--page);
}

.nav-shell {
  display: flex;
  width: min(var(--content-width), calc(100% - 32px));
  min-height: 58px;
  margin: 0 auto;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.nav-tabs {
  display: flex;
  min-width: 0;
  margin-left: auto;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tabs a {
  display: inline-flex;
  min-height: 44px;
  padding: 0 11px;
  align-items: center;
  color: var(--secondary);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
}

.nav-tabs a:hover,
.nav-tabs a[aria-current="page"] { color: var(--ink); }

main,
.site-footer {
  width: min(var(--content-width), calc(100% - 32px));
  margin: 0 auto;
}

.intro {
  display: grid;
  padding: 72px 0 64px;
  align-items: start;
  grid-template-columns: minmax(0, 1fr) minmax(320px, 420px);
  gap: 56px;
}

.summary {
  max-width: 630px;
  margin-bottom: 26px;
  color: var(--secondary);
  font-size: 1.22rem;
}

.status-note,
.plain-note {
  padding: 15px 17px;
  border-left: 3px solid var(--warning-border);
  background: var(--warning-bg);
  color: var(--secondary);
  font-size: 0.9rem;
}

.status-note strong,
.plain-note strong { color: var(--ink); }

.intro-actions {
  display: flex;
  margin-top: 24px;
  flex-wrap: wrap;
  gap: 10px;
}

.button {
  display: inline-flex;
  min-height: 44px;
  padding: 0 18px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink);
  font-weight: 650;
  text-decoration: none;
}

.button:hover { color: var(--ink); }
.button.primary { border-color: var(--accent); background: var(--accent); color: #ffffff; }
.app-preview { margin: 0; }

.carousel-frame {
  display: grid;
  height: 520px;
  place-items: center;
}

.app-preview img {
  max-height: 500px;
  overflow: hidden;
  border-radius: 6px;
}

.carousel-button {
  display: grid;
  width: 44px;
  height: 44px;
  padding: 0;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--page);
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 1.7rem;
  line-height: 1;
}

.carousel-button:hover { background: var(--code-bg); }

.carousel-caption {
  display: flex;
  min-height: 52px;
  padding: 8px 0 0;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  color: var(--tertiary);
  font-size: 0.78rem;
}

.carousel-caption figcaption { margin: 0; }
.carousel-controls {
  display: flex;
  align-items: center;
  gap: 9px;
}

.carousel-controls span {
  min-width: 44px;
  text-align: center;
  white-space: nowrap;
}

.content-section {
  padding: 54px 0 60px;
  border-top: 1px solid var(--border);
}

.content-section > p { max-width: 740px; color: var(--secondary); }
.section-link { margin: 20px 0 0; }

.release-banner {
  display: flex;
  margin: 22px 0 14px;
  padding: 13px 15px;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.release-banner[hidden] { display: none; }
.release-banner > div { display: flex; flex-wrap: wrap; gap: 5px 12px; }
.release-banner span { color: var(--secondary); }

.table-scroll {
  overflow-x: auto;
}

.download-table {
  width: 100%;
  min-width: 690px;
  border-collapse: collapse;
  border-top: 1px solid var(--border);
}

.download-table th,
.download-table td {
  height: 62px;
  padding: 9px 12px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}

.download-table th:first-child,
.download-table td:first-child {
  padding-left: 0;
}

.download-table th:last-child,
.download-table td:last-child {
  padding-right: 0;
}

.download-table thead th {
  height: 44px;
  color: var(--secondary);
  font-size: 0.78rem;
  font-weight: 650;
}

.download-table tbody th {
  font-weight: 650;
}

.download-table td {
  color: var(--secondary);
}

.download-link {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  font-weight: 650;
  white-space: nowrap;
}

.download-link[aria-disabled="true"] {
  color: var(--tertiary);
  cursor: default;
  pointer-events: none;
  text-decoration: none;
}

.checksum-field {
  display: grid;
  min-width: 410px;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 9px;
}

.checksum-value {
  color: var(--secondary);
  font-size: 0.7rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.checksum-field.is-loading .checksum-value {
  color: var(--tertiary);
  font-family: var(--font);
  font-size: 0.85rem;
}

.checksum-copy {
  min-width: 58px;
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--surface);
  color: var(--accent);
  cursor: pointer;
  font: inherit;
  font-size: 0.78rem;
  font-weight: 650;
}

.checksum-copy:hover:not(:disabled) { background: var(--code-bg); }
.checksum-copy:disabled { color: var(--tertiary); cursor: default; }

.plain-note { margin-top: 22px; border-color: var(--border); background: var(--surface); }
.section-header { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.release-list { border-top: 1px solid var(--border); }

.release-entry,
.empty-release {
  display: grid;
  min-height: 92px;
  padding: 18px 0;
  align-items: start;
  grid-template-columns: 155px minmax(0, 1fr) auto;
  gap: 22px;
  border-bottom: 1px solid var(--border);
}

.release-meta { color: var(--tertiary); font-size: 0.85rem; }
.release-entry h3, .empty-release h3 { margin-bottom: 4px; }

.release-entry p,
.empty-release p {
  margin: 0;
  color: var(--secondary);
  font-size: 0.92rem;
  white-space: pre-line;
}

.release-entry > a { display: inline-flex; min-height: 44px; align-items: center; white-space: nowrap; }
.empty-release { display: block; }
.usage-list { max-width: 780px; margin: 0; padding-left: 25px; }
.usage-list li { padding: 7px 0 7px 8px; }
.usage-links { display: flex; margin-top: 24px; flex-wrap: wrap; gap: 12px 24px; }

.usage-links a,
.section-link a,
.section-header a { display: inline-flex; min-height: 44px; align-items: center; }

.feature-list {
  max-width: 850px;
  margin: 0;
  padding-left: 24px;
}

.feature-list li { padding: 7px 0 7px 8px; color: var(--secondary); }
.feature-list strong { color: var(--ink); }

pre {
  max-width: 720px;
  padding: 15px 17px;
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--code-bg);
}

.site-footer {
  display: flex;
  padding: 26px 0 34px;
  justify-content: space-between;
  gap: 20px;
  border-top: 1px solid var(--border);
  color: var(--tertiary);
  font-size: 0.8rem;
}

.site-footer p { margin: 0; }

.noscript-note {
  position: fixed;
  right: 12px;
  bottom: 12px;
  max-width: 400px;
  padding: 12px;
  border: 1px solid var(--border);
  background: var(--surface);
}

@media (max-width: 760px) {
  html { scroll-padding-top: 104px; }
  .nav-shell { display: block; width: 100%; }
  .brand { padding: 0 16px; }
  .nav-tabs { padding: 0 5px; border-top: 1px solid var(--border); }
  .intro { padding-top: 48px; grid-template-columns: 1fr; gap: 36px; }
  .app-preview { width: min(100%, 420px); }
  .carousel-frame { height: 460px; }
  .table-scroll { overflow: visible; }
  .download-table { min-width: 0; }
  .download-table thead {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
  }
  .download-table,
  .download-table tbody,
  .download-table tr,
  .download-table th,
  .download-table td { display: block; }
  .download-table tbody tr {
    display: grid;
    padding: 14px 0;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 18px;
    border-bottom: 1px solid var(--border);
  }
  .download-table tbody th {
    height: auto;
    padding: 0 0 4px;
    grid-column: 1 / -1;
    border: 0;
  }
  .download-table tbody td {
    height: auto;
    padding: 0;
    border: 0;
  }
  .download-table tbody td::before {
    display: block;
    margin-bottom: 1px;
    color: var(--tertiary);
    content: attr(data-label);
    font-size: 0.72rem;
    font-weight: 650;
  }
  .download-table tbody td[data-label="SHA-256"] { grid-column: 1 / -1; }
  .checksum-field { min-width: 0; }
  .release-entry { grid-template-columns: 1fr; gap: 5px; }
  .site-footer { flex-direction: column; gap: 6px; }
}

@media (max-width: 480px) {
  .section-header { display: block; }
  .section-header h2 { margin-bottom: 4px; }
}

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

@media (prefers-contrast: more) {
  :root { --border: currentColor; }
}