/* Static download page. Green accent, pill actions and 18px preview corners.
   DESIGN_VARIANCE: 4; MOTION_INTENSITY: 2; VISUAL_DENSITY: 3.
   The product preview is a real, isolated client screenshot with test data. */
:root {
  color-scheme: light;
  --ink: #202925;
  --muted: #626d67;
  --accent: #177553;
  --accent-hover: #105b40;
  --line: #e4eae6;
  --surface: #f5f8f6;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: #fefefe;
  scroll-padding-top: 32px;
}
* { box-sizing: border-box; }
body { margin: 0; }
a { color: inherit; text-decoration: none; }
button, a, summary { -webkit-tap-highlight-color: transparent; }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent); outline-offset: 5px; }
p { margin: 0; line-height: 1.8; }
.container { width: min(1240px, calc(100% - 96px)); margin-inline: auto; }
.skip-link { position: absolute; top: -100px; left: 24px; padding: 12px; background: #fefefe; }
.skip-link:focus { top: 12px; z-index: 2; }
.site-header { border-bottom: 1px solid var(--line); }
.navigation { min-height: 80px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 12px; font-size: 20px; font-weight: 650; white-space: nowrap; }
.brand-mark { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px; background: var(--accent); color: #fefefe; font-size: 20px; }
.nav-links { display: flex; align-items: center; gap: 32px; color: var(--muted); font-size: 14px; }
.nav-links > a:not(.button):hover, .secondary-link:hover { color: var(--accent); }
.button { display: inline-flex; justify-content: center; align-items: center; gap: 22px; padding: 17px 26px; border-radius: 100px; background: var(--accent); color: #fefefe; font-size: 16px; font-weight: 600; line-height: 1.4; white-space: nowrap; transition: background .16s, transform .16s; }
.button:hover { background: var(--accent-hover); }
.button:active { transform: scale(.98); }
.button span { font-size: 21px; line-height: 1; }
.button-small { padding: 11px 20px; gap: 14px; font-size: 14px; }
.hero { display: grid; grid-template-columns: .9fr 1.15fr; align-items: center; gap: 52px; padding-block: 88px 82px; }
h1 { margin: 0 0 26px; font-size: clamp(36px, 4.1vw, 56px); line-height: 1.35; font-weight: 650; letter-spacing: -2px; }
h1 span { color: var(--accent); }
.hero-description { font-size: 17px; color: var(--muted); }
.hero-actions { margin-top: 32px; display: flex; align-items: center; flex-wrap: wrap; gap: 22px; }
.secondary-link { font-size: 14px; white-space: nowrap; }
.secondary-link span { margin-left: 6px; }
.download-meta { margin-top: 22px; color: var(--muted); font-size: 12px; }
.download-meta > span { padding-inline: 12px; margin-right: 12px; border-right: 1px solid #b9c7be; }
.download-notice { margin-top: 6px; color: var(--muted); font-size: 12px; }
.platform-roadmap { margin-top: 18px; color: var(--muted); font-size: 13px; }
.preview { min-width: 0; margin: 0; }
.preview-frame { padding: 8px; overflow: hidden; border: 1px solid #dce7e0; border-radius: 18px; background: #edf4ef; box-shadow: 0 22px 56px -30px #809f8c; }
.preview img { display: block; width: 100%; height: auto; border-radius: 11px; }
figcaption { margin-top: 15px; text-align: center; font-size: 12px; color: var(--muted); }
h2 { margin: 0; font-weight: 600; font-size: 32px; line-height: 1.5; letter-spacing: -.6px; }
.tools-section { padding-block: 65px; background: var(--surface); border-block: 1px solid var(--line); }
.tools-layout { display: grid; grid-template-columns: 1fr 1.4fr; gap: 100px; }
.section-intro > p { margin-top: 18px; color: var(--muted); font-size: 15px; }
.section-intro .web-status { margin-top: 30px; font-size: 13px; }
.tool-list { display: grid; grid-template-columns: 1fr 1fr; gap: 34px 38px; margin: 8px 0 0; }
.tool-list dt { font-size: 17px; font-weight: 600; }
.tool-list dd { margin: 10px 0 0; font-size: 14px; line-height: 1.8; color: var(--muted); }
.install-section { padding-block: 72px 64px; }
.section-description { margin-top: 12px; font-size: 15px; color: var(--muted); }
.install-steps { list-style: none; counter-reset: install; display: flex; gap: 44px; margin: 36px 0; padding: 0; }
.install-steps li { flex: 1; position: relative; padding-left: 36px; }
.install-steps li::before { counter-increment: install; content: counter(install); position: absolute; top: 3px; left: 0; color: var(--accent); font-weight: 600; font-size: 19px; }
h3 { margin: 0 0 10px; font-size: 16px; font-weight: 600; line-height: 1.8; }
.install-steps p { font-size: 14px; color: var(--muted); }
.installation-note { padding: 24px 28px; background: var(--surface); border-left: 3px solid var(--accent); }
.installation-note p { max-width: 980px; color: var(--muted); font-size: 13px; }
.checksum { margin-top: 26px; font-size: 13px; color: var(--muted); }
summary { width: fit-content; cursor: pointer; padding: 5px 0; }
.checksum dl { margin: 18px 0 0; }
.checksum dl > div { display: flex; gap: 22px; margin-top: 10px; line-height: 1.7; }
.checksum dt { flex: 0 0 70px; }
.checksum dd { margin: 0; overflow-wrap: anywhere; }
.checksum code { font-size: 12px; }
.site-footer { display: flex; justify-content: space-between; gap: 20px; padding-block: 26px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
@media (max-width: 1024px) {
  .container { width: calc(100% - 64px); }
  .hero { gap: 32px; padding-block: 64px; }
  h1 { font-size: 40px; }
  .hero-description { font-size: 15px; }
  .tools-layout { gap: 48px; }
  .hero-actions { gap: 16px; }
  .install-steps { gap: 24px; }
}
@media (max-width: 767px) {
  .container { width: calc(100% - 40px); }
  .navigation { min-height: 72px; gap: 12px; }
  .brand { gap: 9px; font-size: 17px; }
  .brand-mark { width: 30px; height: 30px; font-size: 18px; }
  .nav-links { gap: 0; }
  .nav-links > a:not(.button) { display: none; }
  .button-small { padding: 10px 15px; gap: 8px; font-size: 12px; }
  .hero { grid-template-columns: 1fr; gap: 38px; padding-block: 44px; }
  h1 { font-size: 38px; letter-spacing: -1px; margin-bottom: 20px; }
  .hero-description { font-size: 15px; }
  .hero-actions { margin-top: 26px; gap: 18px; }
  .hero-actions .button { padding: 15px 23px; font-size: 15px; }
  .hero-actions .secondary-link { font-size: 13px; }
  .download-meta { font-size: 11px; }
  .download-meta > span { margin-right: 8px; padding-inline: 8px; }
  .download-notice { font-size: 11px; }
  .preview-frame { padding: 5px; border-radius: 14px; }
  .preview img { border-radius: 9px; }
  h2 { font-size: 27px; }
  .tools-section { padding-block: 42px; }
  .tools-layout { grid-template-columns: 1fr; gap: 30px; }
  .tool-list { gap: 25px 22px; }
  .tool-list dt { font-size: 15px; }
  .tool-list dd { font-size: 13px; margin-top: 7px; }
  .section-intro .web-status { margin-top: 16px; }
  .install-section { padding-block: 44px; }
  .section-description { font-size: 14px; }
  .install-steps { flex-direction: column; gap: 22px; margin-block: 28px; }
  .installation-note { padding: 20px; }
  .site-footer { flex-direction: column; gap: 8px; padding-block: 22px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
}