:root {
  --bg: #f4f7fb;
  --surface: #fff;
  --text: #1f2a37;
  --muted: #64748b;
  --line: #e5eaf3;
  --accent: #0088cc;
  --accent-hover: #0076b3;
  --radius: 12px;
  --font: "Segoe UI", system-ui, -apple-system, sans-serif;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f172a;
    --surface: #111827;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --line: #263244;
    --accent: #3b9edb;
    --accent-hover: #5bb0e3;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

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

html.i18n-pending main,
html.i18n-pending footer {
  visibility: hidden;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background:
    radial-gradient(
      ellipse 80% 42% at 50% -12%,
      color-mix(in srgb, var(--accent) 14%, transparent),
      transparent 70%
    ),
    var(--bg);
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.block a {
  overflow-wrap: anywhere;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 12px 20px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: auto;
  color: var(--text);
  font-weight: 700;
  text-decoration: none;
}

.brand:hover {
  color: var(--text);
  text-decoration: none;
}

.brand img {
  border-radius: 8px;
}

nav {
  display: flex;
  gap: 16px;
  font-size: 14px;
}

nav a {
  color: var(--muted);
}

.lang {
  display: inline-flex;
  flex-shrink: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}

.lang button {
  padding: 4px 8px;
  border: 0;
  background: transparent;
  color: var(--muted);
  font: inherit;
  font-size: 12px;
  cursor: pointer;
}

.lang button + button {
  border-left: 1px solid var(--line);
}

.lang button.is-active {
  background: var(--accent);
  color: #fff;
}

main {
  max-width: 880px;
  margin: 0 auto;
  padding: 32px 20px 64px;
}

.hero {
  text-align: center;
  padding: 24px 0 8px;
}

.hero-logo {
  border-radius: 16px;
  box-shadow: 0 10px 28px color-mix(in srgb, var(--accent) 28%, transparent);
}

.hero h1 {
  margin: 12px 0 8px;
  font-size: 36px;
  letter-spacing: 0.02em;
}

.lead {
  margin: 0 auto;
  max-width: 34em;
  color: var(--muted);
}

.pager {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.pager #release-meta {
  flex: 1;
  margin: 0;
  min-width: 12em;
  text-align: center;
}

.pager button {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}

.pager button:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.pager button:disabled {
  opacity: 0.4;
  cursor: default;
}

.block {
  margin-top: 40px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.block h2 {
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  font-size: 22px;
}

.block h3 {
  margin: 28px 0 8px;
  font-size: 17px;
}

.muted {
  color: var(--muted);
  font-size: 14px;
}

.cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: start;
  gap: 12px;
  margin: 16px 0;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.card h3 {
  margin: 0 0 4px;
}

.card > p {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
}

.btn {
  display: block;
  padding: 8px 14px;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  overflow-wrap: anywhere;
}

.btn:hover {
  background: var(--accent-hover);
  color: #fff;
  text-decoration: none;
}

.card-install {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--line);
}

.card-install summary,
.faq summary {
  cursor: pointer;
  user-select: none;
}

.card-install summary {
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

.card-install summary:hover,
.faq summary:hover {
  color: var(--accent);
}

.card-install[open] summary {
  margin-bottom: 8px;
  color: var(--text);
}

.card-install ol {
  margin: 0;
  font-size: 14px;
}

.card-install .muted {
  margin: 8px 0 0;
}

ul,
ol {
  padding-left: 1.2em;
}

li + li {
  margin-top: 6px;
}

code {
  padding: 1px 6px;
  border-radius: 4px;
  background: color-mix(in srgb, var(--accent) 10%, var(--surface));
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.92em;
}

.faq details {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.faq details:first-child {
  border-top: 0;
  padding-top: 0;
}

.faq summary {
  font-weight: 600;
}

.faq details p {
  margin: 6px 0 0;
  color: var(--muted);
}

footer {
  display: flex;
  justify-content: center;
  gap: 18px;
  padding: 24px 16px 40px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 640px) {
  html {
    scroll-padding-top: 128px;
  }

  nav {
    flex: 1 1 100%;
    order: 3;
    overflow-x: auto;
  }

  .pager {
    display: grid;
    grid-template-columns: 1fr 1fr;
  }

  .pager #release-meta {
    order: -1;
    grid-column: 1 / -1;
  }

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

  .hero h1 {
    font-size: 28px;
  }
}