:root {
  --download-bg: #f6f7f9;
  --download-surface: #ffffff;
  --download-surface-muted: #eef2f6;
  --download-text: #172033;
  --download-muted: #5f6b7a;
  --download-border: #d9e0e8;
  --download-accent: #2563eb;
  --download-accent-hover: #1d4ed8;
  --download-accent-soft: #eff6ff;
  --download-focus: #93c5fd;
  --download-success-bg: #ecfdf3;
  --download-success-text: #166534;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--download-bg);
}

body.download-page {
  margin: 0;
  min-width: 20rem;
  min-height: 100vh;
  background: var(--download-bg);
  color: var(--download-text);
  font-family:
    Inter, "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo,
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
}

.download-page main {
  width: min(calc(100% - 2rem), 44rem);
  margin-inline: auto;
  padding-block: clamp(2.5rem, 7vw, 4.5rem) 5rem;
}

.download-page h1 {
  margin: 0 0 0.75rem;
  color: var(--download-text);
  font-size: clamp(2.2rem, 7vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: -0.025em;
}

.download-page h2 {
  margin: 2rem 0 0.9rem;
  font-size: 1.35rem;
  line-height: 1.3;
}

.download-page p {
  margin: 0 0 1rem;
}

.download-page main > p:not(.download-back):not(.download-changelog),
.download-page label {
  color: var(--download-muted);
}

.download-page form {
  margin-top: 1.5rem;
  padding: clamp(1.25rem, 4vw, 1.75rem);
  background: var(--download-surface);
  border: 1px solid var(--download-border);
  border-radius: 0.95rem;
}

.download-page form p {
  margin-bottom: 0;
}

.download-page label {
  display: grid;
  gap: 0.5rem;
  font-weight: 650;
}

.download-page input[type="password"] {
  width: 100%;
  min-height: 2.8rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--download-border);
  border-radius: 0.55rem;
  background: #ffffff;
  color: var(--download-text);
  font: inherit;
}

.download-page input[type="password"]:focus-visible,
.download-page button:focus-visible,
.download-page a:focus-visible {
  outline: 3px solid var(--download-focus);
  outline-offset: 3px;
}

.download-page button,
.download-page .download-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.8rem;
  padding: 0.65rem 1rem;
  border: 1px solid var(--download-accent);
  border-radius: 0.55rem;
  background: var(--download-accent);
  color: #ffffff;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.download-page button:hover,
.download-page .download-button:hover {
  background: var(--download-accent-hover);
  border-color: var(--download-accent-hover);
  color: #ffffff;
}

.download-page a {
  color: var(--download-accent);
  font-weight: 650;
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.18em;
}

.download-page a:hover {
  color: var(--download-accent-hover);
}

.download-back {
  margin-bottom: 1.5rem !important;
}

.download-back a {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0.35rem 0.7rem;
  border: 1px solid var(--download-border);
  border-radius: 0.55rem;
  background: var(--download-surface);
  color: var(--download-muted);
  text-decoration: none;
}

.download-back a:hover {
  border-color: var(--download-accent);
  color: var(--download-accent-hover);
}

.release-list {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.release-list li {
  margin: 0;
}

.release-card {
  display: grid;
  gap: 0.8rem;
  padding: 1.15rem;
  background: var(--download-surface);
  border: 1px solid var(--download-border);
  border-radius: 0.85rem;
}

.release-card-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.release-version {
  font-size: 1.15rem;
  font-weight: 800;
}

.release-current {
  display: inline-flex;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  background: var(--download-success-bg);
  color: var(--download-success-text);
  font-size: 0.8rem;
  font-weight: 750;
}

.release-file {
  color: var(--download-muted);
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.empty-state {
  padding: 1.15rem;
  background: var(--download-surface);
  border: 1px solid var(--download-border);
  border-radius: 0.85rem;
  color: var(--download-muted);
}

.download-changelog {
  margin-top: 1.5rem !important;
  padding: 1rem;
  background: var(--download-accent-soft);
  border: 1px solid #bfdbfe;
  border-radius: 0.75rem;
}

.download-changelog span {
  display: block;
  margin-bottom: 0.15rem;
  color: var(--download-muted);
  font-size: 0.85rem;
}

@media (max-width: 40rem) {
  .download-page main {
    width: min(calc(100% - 1.25rem), 44rem);
    padding-top: 2rem;
  }

  .download-page form {
    padding: 1rem;
  }

  .download-page button,
  .download-page .download-button {
    width: 100%;
  }

  .release-card-top {
    align-items: flex-start;
    flex-direction: column;
  }
}