:root {
  color-scheme: dark;
  --shell-void: #101012; --shell-canvas: #151517; --shell-chrome: #1e1e20;
  --shell-border: rgb(255 255 255 / .07); --shell-text: #fafafa;
  --shell-muted: #a1a1a1; --shell-dim: #858589;
  --shell-accent: #f47d43; --shell-accent-strong: #ff9159;
  --shell-accent-soft: rgb(244 125 67 / .08); --shell-accent-border: rgb(244 125 67 / .42);
  --mono: 'SF Mono', 'Cascadia Mono', Consolas, monospace;
}
* { box-sizing: border-box; letter-spacing: 0; }
body { margin: 0; background: var(--shell-void); color: var(--shell-text); font: 14px/1.65 -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--shell-text); }
a:focus-visible { outline: 2px solid var(--shell-accent); outline-offset: 5px; }
h1, h2, h3, p { margin: 0; }
.container { width: min(100% - 80px, 1040px); margin-inline: auto; }
.mono, .eyebrow { font-family: var(--mono); }
header { border-bottom: 1px solid var(--shell-border); background: var(--shell-canvas); }
.header-inner { min-height: 72px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-size: 16px; font-weight: 650; }
.brand img { object-fit: contain; }
nav { display: flex; align-items: center; gap: 30px; font-size: 13px; color: var(--shell-muted); }
nav [aria-current] { color: var(--shell-text); }
.intro { padding: 68px 0 54px; }
.eyebrow { color: var(--shell-dim); font-size: 11px; font-weight: 500; }
.eyebrow span { color: var(--shell-accent); margin-right: 12px; }
h1 { margin-top: 13px; font-size: 52px; line-height: 1.25; font-weight: 650; }
.title-dot { color: var(--shell-accent); }
.lede { margin-top: 20px; color: var(--shell-muted); font-size: 18px; line-height: 1.8; }
.intro-meta { display: flex; flex-wrap: wrap; margin-top: 22px; color: var(--shell-dim); font-size: 12px; }
.intro-meta span + span::before { content: '/'; margin: 0 14px; color: #55555a; }
.mobile-break { display: none; }
section { scroll-margin-top: 24px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 22px; }
h2 { font-size: 24px; line-height: 1.45; font-weight: 600; }
.section-heading h2 { margin-top: 8px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; flex-shrink: 0; min-height: 36px; color: var(--shell-muted); font-size: 13px; }
.release-bar { min-height: 44px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--shell-dim); font-size: 11px; border-top: 1px solid var(--shell-border); }
.release-label { display: inline-flex; align-items: center; gap: 8px; }
.status-dot { width: 5px; height: 5px; flex-shrink: 0; border-radius: 50%; background: var(--shell-dim); }
[data-release-state='ready'] .status-dot { background: #4ec9b0; }
.downloads { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--shell-border); border-bottom: 1px solid var(--shell-border); background: var(--shell-canvas); }
.download-option { min-width: 0; padding: 28px 32px 30px; }
.download-option + .download-option { border-left: 1px solid var(--shell-border); }
.option-heading { display: flex; gap: 14px; align-items: center; }
h3 { font-size: 18px; font-weight: 600; }
.tag { color: var(--shell-accent-strong); font-size: 11px; }
.tag.neutral { color: var(--shell-dim); }
.description { margin-top: 12px; color: var(--shell-muted); font-size: 13px; line-height: 1.9; }
.package-meta { min-height: 20px; margin: 24px 0 12px; color: var(--shell-dim); font-size: 11px; }
.download-button { display: flex; align-items: center; justify-content: space-between; gap: 14px; min-height: 44px; padding: 10px 14px; border: 1px solid rgb(255 255 255 / .14); border-radius: 6px; font-size: 13px; font-weight: 600; color: var(--shell-muted); transition: background .15s, border-color .15s; }
.download-button svg { flex-shrink: 0; }
.download-button:hover { background: var(--shell-chrome); border-color: rgb(255 255 255 / .25); }
.download-button.primary { color: var(--shell-accent-strong); border-color: var(--shell-accent-border); }
.download-button.primary:hover { background: var(--shell-accent-soft); }
.release-note { margin-top: 14px; color: var(--shell-dim); font-size: 12px; min-height: 20px; }
.platform-note { display: flex; gap: 28px; padding: 24px 0; margin-top: 8px; color: var(--shell-dim); font-size: 12px; }
.platform-note > span { color: var(--shell-muted); flex-shrink: 0; }
.install-section { padding: 40px 0 48px; border-top: 1px solid var(--shell-border); }
.steps { list-style: none; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 40px; padding: 4px 0 0; margin: 0; }
.step-number { color: var(--shell-dim); font-size: 12px; }
.steps h3 { margin: 12px 0 8px; font-size: 14px; }
.steps p { color: var(--shell-muted); font-size: 13px; }
.support { border-top: 1px solid var(--shell-border); padding: 28px 0 40px; display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.support h2 { font-size: 14px; }
.support p { color: var(--shell-dim); font-size: 12px; margin-top: 5px; }
footer { border-top: 1px solid var(--shell-border); }
.footer-inner { min-height: 94px; display: flex; align-items: center; gap: 24px; color: var(--shell-dim); font-size: 12px; }
.footer-inner .brand { color: var(--shell-muted); font-size: 13px; }
.footer-inner > a:last-child { margin-left: auto; }
.skip-link { position: absolute; top: -80px; left: 20px; padding: 10px; background: var(--shell-chrome); z-index: 2; }
.skip-link:focus { top: 12px; }
@media (max-width: 640px) {
  .container { width: calc(100% - 40px); }
  .header-inner { min-height: 64px; gap: 12px; }
  nav { gap: 16px; font-size: 12px; }
  .brand { gap: 8px; font-size: 14px; }
  .intro { padding: 40px 0 36px; }
  h1 { font-size: 36px; }
  .lede { font-size: 16px; margin-top: 16px; }
  .mobile-break { display: block; }
  h2 { font-size: 21px; }
  .section-heading { gap: 12px; margin-bottom: 16px; }
  .downloads { grid-template-columns: 1fr; }
  .download-option { padding: 24px; }
  .download-option + .download-option { border-left: 0; border-top: 1px solid var(--shell-border); }
  .package-meta { margin-top: 18px; }
  .release-bar { flex-wrap: wrap; padding: 10px 0; gap: 4px 12px; }
  .platform-note { gap: 16px; }
  .steps { grid-template-columns: 1fr; gap: 24px; }
  .steps li { position: relative; padding-left: 36px; }
  .step-number { position: absolute; left: 0; top: 1px; }
  .steps h3 { margin-top: 0; }
  .install-section { padding: 28px 0 32px; }
  .support { align-items: flex-start; }
  .footer-inner { flex-wrap: wrap; padding-block: 24px; gap: 14px 20px; }
  .footer-inner > span { order: 3; width: 100%; }
}
@media (prefers-reduced-motion: reduce) { * { transition: none !important; } }
.product-tour { border-top: 1px solid var(--shell-border); padding: 40px 0; }
.tour-intro { max-width: 720px; color: var(--shell-muted); line-height: 1.9; }
.tour-shot { margin: 36px 0; }
.tour-shot figcaption { max-width: 720px; margin-bottom: 18px; }
.tour-shot h3 { margin: 7px 0; }
.tour-shot p { color: var(--shell-muted); font-size: 13px; }
.tour-shot > a { display: block; border: 1px solid var(--shell-border); background: var(--shell-canvas); }
.tour-shot img { display: block; width: 100%; height: auto; }
.tour-play { margin-top: 12px; padding: 9px 14px; border: 1px solid var(--shell-accent-border); border-radius: 6px; background: transparent; color: var(--shell-accent-strong); font: inherit; font-size: 12px; cursor: pointer; }
.tour-play:hover { background: var(--shell-accent-soft); }
.tour-play:focus-visible { outline: 2px solid var(--shell-accent); outline-offset: 4px; }
.experiment-label { color: var(--shell-accent-strong); font-size: 11px; }
.product-tour > .text-link { margin-top: 16px; }
@media (max-width: 640px) {
  .product-tour { padding: 28px 0; }
  .tour-shot { margin: 28px 0; }
}