/* Standalone Hub document. Existing semantic roles, no Host bundle or third-party
   resources. One isolated theme script supports system, light and dark choices. */
:root[data-download-theme="light"] { color-scheme: light; }
:root[data-download-theme="dark"] { color-scheme: dark; }
.witarc-downloads {
  --witarc-ds-bg-app: #f3f6fb;
  --witarc-ds-bg-card: #ffffff;
  --witarc-ds-text-primary: #18253b;
  --witarc-ds-text-muted: #52647f;
  --witarc-ds-border-default: #d5dfed;
  --witarc-ds-accent: #315fa7;
  --witarc-ds-text-inverse: #ffffff;
  --witarc-ds-bg-control: #eaf0f8;
  --witarc-ds-bg-emphasis: #244b83;
  --witarc-ds-text-on-emphasis: #ffffff;
  --witarc-ds-radius-control: 8px;
  --witarc-ds-radius-hero: 18px;
  --witarc-ds-font-ui: "Avenir Next", "PingFang SC", "Microsoft YaHei", sans-serif;
  --witarc-ds-type-display-lg-size: clamp(28px, 3vw, 38px);
  margin: 0;
  background: var(--witarc-ds-bg-app);
  color: var(--witarc-ds-text-primary);
  font: 14px/1.6 var(--witarc-ds-font-ui);
  -webkit-font-smoothing: antialiased;
}
.witarc-downloads *, .witarc-downloads *::before, .witarc-downloads *::after { box-sizing: border-box; }
.witarc-downloads a { color: inherit; touch-action: manipulation; }
.witarc-downloads button:focus-visible, .witarc-downloads a:focus-visible, .witarc-downloads summary:focus-visible, .witarc-downloads pre:focus-visible { outline: 2px solid var(--witarc-ds-accent); outline-offset: 4px; }
.witarc-downloads summary, .witarc-downloads button { touch-action: manipulation; }
.witarc-downloads__page { width: min(1160px, calc(100% - 96px)); min-height: 100svh; margin: auto; display: flex; flex-direction: column; }
.witarc-downloads__header { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 96px; border-bottom: 1px solid var(--witarc-ds-border-default); }
.witarc-downloads__identity { display: flex; align-items: center; gap: 16px; min-width: 0; padding: 16px 0; }
.witarc-downloads__wordmark { font-size: clamp(18px, 2vw, 24px); line-height: 1.35; font-weight: 650; letter-spacing: .02em; overflow-wrap: anywhere; text-wrap: balance; }
.witarc-downloads__header-actions { display: flex; align-items: center; gap: 20px; flex-shrink: 0; }
.witarc-downloads__theme-switcher { display: flex; align-items: center; gap: 2px; border: 0; background: transparent; }
.witarc-downloads__theme-switcher button { display: inline-flex; align-items: center; justify-content: center; gap: 5px; min-width: 44px; min-height: 36px; padding: 6px 8px; border: 0; border-radius: var(--witarc-ds-radius-control); background: transparent; color: var(--witarc-ds-text-muted); font: 12px/1.5 var(--witarc-ds-font-ui); cursor: pointer; }
.witarc-downloads__theme-switcher button[aria-pressed="true"] { color: var(--witarc-ds-accent); font-weight: 600; }
.witarc-downloads__theme-switcher button:disabled { cursor: default; }
.witarc-downloads__theme-switcher svg { width: 16px; height: 16px; stroke-linecap: round; stroke-linejoin: round; }
.witarc-downloads__main { flex: 1; padding: 36px 0 40px; scroll-margin-top: 24px; }
.witarc-downloads__main:focus-visible { outline: 2px solid var(--witarc-ds-accent); outline-offset: 8px; }
.witarc-downloads__hero { margin: 0 0 28px; }
.witarc-downloads__brand { flex: 0 0 48px; width: 48px; height: 48px; padding: 4px; display: grid; place-items: center; border: 1px solid var(--witarc-ds-border-default); border-radius: var(--witarc-ds-radius-control); background: #fff; }
.witarc-downloads__logo { display: block; width: 100%; height: 100%; object-fit: contain; }
.witarc-downloads__monogram { color: #1f2937; font-size: 26px; font-weight: 600; }
.witarc-downloads__eyebrow { margin: 0 0 8px; color: var(--witarc-ds-text-muted); font-size: 12px; letter-spacing: .08em; overflow-wrap: anywhere; }
.witarc-downloads__hero h1 { margin: 0; font-size: var(--witarc-ds-type-display-lg-size); line-height: 1.3; letter-spacing: -.03em; font-weight: 650; text-wrap: balance; }
.witarc-downloads__description { margin: 12px 0 0; color: var(--witarc-ds-text-muted); text-wrap: pretty; }
.witarc-downloads__grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.witarc-downloads__platform { display: flex; flex-direction: column; min-width: 0; padding: 24px; border: 1px solid var(--witarc-ds-border-default); border-radius: var(--witarc-ds-radius-hero); background: var(--witarc-ds-bg-card); }
.witarc-downloads__platform-heading { display: flex; align-items: flex-start; gap: 12px; }
.witarc-downloads__platform-name { min-width: 0; }
.witarc-downloads__platform-icon { display: grid; place-items: center; flex: 0 0 40px; height: 40px; color: var(--witarc-ds-accent); background: color-mix(in srgb, var(--witarc-ds-accent) 8%, transparent); border-radius: var(--witarc-ds-radius-control); }
.witarc-downloads__title-row { display: flex; align-items: center; flex-wrap: wrap; gap: 6px 10px; }
.witarc-downloads__platform h2 { margin: 0; font-size: 23px; line-height: 1.3; font-weight: 600; letter-spacing: -.03em; }
.witarc-downloads__caption { margin: 4px 0 0; color: var(--witarc-ds-text-muted); font-size: 12px; text-wrap: pretty; }
.witarc-downloads__version { padding: 2px 6px; border: 1px solid var(--witarc-ds-border-default); border-radius: var(--witarc-ds-radius-control); color: var(--witarc-ds-text-muted); font-size: 12px; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.witarc-downloads__actions { flex: 1; display: grid; align-content: start; gap: 16px; margin-top: 24px; }
.witarc-downloads__actions--paired { grid-template-columns: repeat(auto-fit, minmax(min(100%, 140px), 1fr)); gap: 12px; }
.witarc-downloads__actions--paired .witarc-downloads__button { gap: 8px; padding-inline: 12px; }
.witarc-downloads__actions--paired .witarc-downloads__metadata { gap: 4px 8px; }
.witarc-downloads__installer { min-width: 0; }
.witarc-downloads__button, .witarc-downloads__empty, .witarc-downloads__retry { display: flex; justify-content: space-between; align-items: center; gap: 12px; min-height: 48px; padding: 12px 16px; border: 1px solid var(--witarc-ds-border-default); border-radius: var(--witarc-ds-radius-control); text-decoration: none; font-size: 14px; font-weight: 500; }
.witarc-downloads .witarc-downloads__button { background: var(--witarc-ds-bg-emphasis); border-color: var(--witarc-ds-bg-emphasis); color: var(--witarc-ds-text-on-emphasis); transition: opacity .18s ease; }
.witarc-downloads__button span { min-width: 0; overflow-wrap: anywhere; }
.witarc-downloads__button svg { width: 16px; height: 16px; flex-shrink: 0; }
.witarc-downloads__metadata { display: flex; flex-wrap: wrap; gap: 4px 12px; padding: 8px 2px 0; color: var(--witarc-ds-text-muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.witarc-downloads__empty { justify-content: center; color: var(--witarc-ds-text-muted); background: var(--witarc-ds-bg-app); }
.witarc-downloads__retry { justify-content: center; text-decoration: underline; text-underline-offset: 4px; }
.witarc-downloads__footnote { margin-top: 20px; padding-top: 12px; border-top: 1px solid var(--witarc-ds-border-default); color: var(--witarc-ds-text-muted); font-size: 12px; }
.witarc-downloads__footnote a { display: flex; align-items: center; justify-content: space-between; min-height: 32px; text-decoration: none; }
.witarc-downloads__hint { margin: 16px 0 0; color: var(--witarc-ds-text-muted); font-size: 12px; }
.witarc-downloads__installation { display: grid; grid-template-columns: minmax(180px, 1fr) minmax(0, 2fr); gap: 40px; margin-top: 44px; padding-top: 32px; border-top: 1px solid var(--witarc-ds-border-default); scroll-margin-top: 24px; }
.witarc-downloads__section-intro h2, .witarc-downloads__faq h2 { margin: 0; font-size: 22px; font-weight: 600; line-height: 1.4; text-wrap: balance; }
.witarc-downloads__section-intro > p:last-child { max-width: 28em; margin: 12px 0 0; color: var(--witarc-ds-text-muted); font-size: 13px; text-wrap: pretty; }
.witarc-downloads__guides { min-width: 0; }
.witarc-downloads__guide { border-bottom: 1px solid var(--witarc-ds-border-default); scroll-margin-top: 24px; }
.witarc-downloads__guide:first-child { border-top: 1px solid var(--witarc-ds-border-default); }
.witarc-downloads__guide summary { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 56px; padding: 12px 0; cursor: pointer; list-style: none; font-weight: 600; }
.witarc-downloads__guide summary::-webkit-details-marker { display: none; }
.witarc-downloads__guide-toggle { color: var(--witarc-ds-text-muted); font-size: 20px; line-height: 1; }
.witarc-downloads__guide[open] .witarc-downloads__guide-toggle { transform: rotate(45deg); }
.witarc-downloads__guide-content { padding: 0 0 20px; font-size: 13px; }
.witarc-downloads__guide-content p { margin: 0 0 12px; color: var(--witarc-ds-text-muted); text-wrap: pretty; }
.witarc-downloads__guide-content ol { margin: 0; padding-left: 20px; }
.witarc-downloads__guide-content li + li { margin-top: 8px; }
.witarc-downloads__command + .witarc-downloads__command { margin-top: 20px; }
.witarc-downloads__command h3 { display: flex; flex-wrap: wrap; gap: 8px; margin: 16px 0 4px; font-size: 13px; font-weight: 600; }
.witarc-downloads__command h3 span { color: var(--witarc-ds-text-muted); font-weight: 400; font-variant-numeric: tabular-nums; }
.witarc-downloads__command pre { max-width: 100%; margin: 0; padding: 14px 16px; overflow-x: auto; border: 1px solid var(--witarc-ds-border-default); border-radius: var(--witarc-ds-radius-control); background: var(--witarc-ds-bg-card); tab-size: 2; }
.witarc-downloads code { font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace; font-size: 12px; }
.witarc-downloads__guide-empty { margin: 0; color: var(--witarc-ds-text-muted); }
.witarc-downloads__faq { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 32px; margin-top: 40px; }
.witarc-downloads__faq h2 { grid-column: 1 / -1; font-size: 18px; }
.witarc-downloads__faq details { min-width: 0; }
.witarc-downloads__faq summary { padding: 8px 0; min-height: 44px; cursor: pointer; }
.witarc-downloads__faq p { margin: 8px 0 0; color: var(--witarc-ds-text-muted); font-size: 13px; overflow-wrap: anywhere; }
.witarc-downloads__footer { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; padding: 24px 0 32px; border-top: 1px solid var(--witarc-ds-border-default); color: var(--witarc-ds-text-muted); font-size: 11px; }
.witarc-downloads__skip { position: absolute; left: 24px; top: -96px; padding: 12px 24px; background: var(--witarc-ds-bg-card); }
.witarc-downloads__skip:focus { top: 16px; }
@media (hover: hover) {
  .witarc-downloads__platform:focus-within { border-color: var(--witarc-ds-accent); }
  .witarc-downloads__footnote a:hover, .witarc-downloads summary:hover { color: var(--witarc-ds-text-primary); text-decoration: underline; text-underline-offset: 4px; }
  .witarc-downloads__button:hover { opacity: .9; }
  .witarc-downloads__theme-switcher button:not(:disabled):hover { color: var(--witarc-ds-accent); }
}
:root[data-download-theme="dark"] .witarc-downloads { --witarc-ds-bg-app: #101824; --witarc-ds-bg-card: #182334; --witarc-ds-text-primary: #e6edf7; --witarc-ds-text-muted: #a0b1ca; --witarc-ds-border-default: #34445c; --witarc-ds-accent: #a5c4fa; --witarc-ds-bg-control: #1f2e44; --witarc-ds-bg-emphasis: #345f98; --witarc-ds-text-on-emphasis: #ffffff; }
@media (prefers-color-scheme: dark) {
  :root:not([data-download-theme]) .witarc-downloads { --witarc-ds-bg-app: #101824; --witarc-ds-bg-card: #182334; --witarc-ds-text-primary: #e6edf7; --witarc-ds-text-muted: #a0b1ca; --witarc-ds-border-default: #34445c; --witarc-ds-accent: #a5c4fa; --witarc-ds-bg-control: #1f2e44; --witarc-ds-bg-emphasis: #345f98; --witarc-ds-text-on-emphasis: #ffffff; }
}
@media (max-width: 960px) {
  .witarc-downloads__page { width: calc(100% - 48px); }
  .witarc-downloads__grid { gap: 16px; }
  .witarc-downloads__platform { padding: 20px; }
  .witarc-downloads__platform-heading { display: block; }
  .witarc-downloads__platform-icon { width: 36px; height: 36px; margin-bottom: 12px; }
}
@media (max-width: 760px) {
  .witarc-downloads__page { width: calc(100% - 32px); }
  .witarc-downloads__header { min-height: 88px; gap: 12px; flex-wrap: wrap; padding-bottom: 8px; }
  .witarc-downloads__identity { gap: 12px; padding-bottom: 4px; }
  .witarc-downloads__brand { flex-basis: 44px; width: 44px; height: 44px; }
  .witarc-downloads__header-actions { width: 100%; justify-content: flex-end; }
  .witarc-downloads__theme-switcher button { min-height: 44px; }
  .witarc-downloads__main { padding: 28px 0; }
  .witarc-downloads__grid { grid-template-columns: minmax(0, 1fr); }
  .witarc-downloads__platform-heading { display: flex; }
  .witarc-downloads__platform-icon { margin-bottom: 0; }
  .witarc-downloads__installation { grid-template-columns: minmax(0, 1fr); gap: 24px; margin-top: 32px; }
  .witarc-downloads__faq { grid-template-columns: minmax(0, 1fr); }
  .witarc-downloads__footnote a { min-height: 44px; }
}
@media (prefers-reduced-motion: reduce) { .witarc-downloads__button { transition: none; } }
@media (forced-colors: active) { .witarc-downloads__button, .witarc-downloads__empty { border-color: ButtonText; } }