/* Homepage only; shared About/Sponsor styles are unchanged.
 * Retains the site's palette and Files Community-inspired grid layout.
 * Original layout license: /res/files-community-LICENSE.txt
 */
:root {
  color-scheme: light;
  --text-primary: #293d4c;
  --text-secondary: #536575;
  --text-muted: #606f7d;
  --background: #e6ebef;
  --section-background: #f0f3f5;
  --divider: rgb(64 80 96 / 16%);
  --subtle: rgb(64 80 96 / 7%);
}
*, *::before, *::after { box-sizing: border-box; }
html { font-size: 100%; }
body {
  margin: 0;
  background: var(--section-background);
  color: var(--text-primary);
  font: 15px/1.7 system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  overflow-wrap: break-word;
}
a { color: inherit; text-decoration: none; transition: color 160ms ease, background-color 160ms ease; }
a:focus-visible { outline: 2px solid #536575; outline-offset: 5px; border-radius: 2px; }
a:active { color: var(--text-primary); background-color: var(--subtle); }
.icon { display: block; flex: 0 0 auto; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.icon-definitions { position: absolute; width: 0; height: 0; overflow: hidden; pointer-events: none; }
.skip-link { position: fixed; top: 10px; left: 20px; z-index: 20; padding: 8px 14px; background: #fff; transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
/* The skip-link target is not an interactive control; links keep their focus ring. */
#main-content:focus { outline: none; }
.navbar { display: flex; align-items: center; justify-content: space-between; gap: 20px; min-height: 64px; padding: 12px max(24px, calc(50% - 600px)); border-bottom: 1px solid var(--divider); }
.navbar .inner { display: flex; align-items: center; gap: 6px; }
.logo { display: inline-flex; align-items: center; gap: 10px; margin-right: 16px; font-size: 14px; font-weight: 600; }
.logo img { display: block; width: 24px; height: 32px; }
.divider { height: 20px; margin-right: 12px; border-left: 1px solid var(--divider); }
.item { display: inline-flex; align-items: center; padding: 5px 11px; border-radius: 3px; color: var(--text-secondary); font-size: 14px; white-space: nowrap; }
.item.selected, .item:hover, .github-link:hover { background: var(--subtle); }
.item.selected { color: var(--text-primary); }
.github-link { display: inline-flex; align-items: center; gap: 7px; padding: 5px 10px; border-radius: 3px; font-size: 13px; }
.github-link .icon { width: 17px; height: 17px; }
.page-section-inner { width: 100%; max-width: 1248px; margin: 0 auto; padding: 52px 24px 64px; }
.page-eyebrow { display: block; color: var(--text-muted); font-size: 12px; letter-spacing: .08em; }
h1 { margin: 14px 0 10px; font-size: 40px; line-height: 1.3; font-weight: 650; letter-spacing: -.025em; }
.section-description { max-width: 65ch; margin: 0 0 30px; color: var(--text-secondary); font-size: 15px; line-height: 1.8; }
.feature-cards-container { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 4px 28px; border-top: 1px solid var(--divider); }
.feature-card { position: relative; display: flex; flex-direction: column; min-width: 0; padding: 24px 0 22px; border-bottom: 1px solid var(--divider); transition: border-color 160ms ease; }
.feature-card:hover, .feature-card:focus-within { border-bottom-color: rgb(64 80 96 / 55%); }
.project-top { display: flex; align-items: center; gap: 10px; min-height: 26px; margin-bottom: 13px; }
.project-top > .icon { width: 23px; height: 23px; }
.project-kicker { color: var(--text-muted); font-size: 12px; letter-spacing: .025em; }
.project-status { margin-left: auto; padding: 1px 7px; border: 1px solid var(--divider); border-radius: 3px; color: var(--text-muted); font-size: 12px; white-space: nowrap; }
.feature-card h2 { margin: 0 0 10px; font-size: 18px; line-height: 1.55; font-weight: 600; }
.feature-card h2 a::after { position: absolute; inset: 0; content: ""; }
.feature-card h2 a:hover, .feature-card h2 a:focus-visible { text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 5px; }
.feature-card p { margin: 0 0 16px; color: var(--text-secondary); font-size: 14px; line-height: 1.8; }
.project-tech { display: flex; flex-wrap: wrap; gap: 5px 14px; margin: auto 0 8px; padding: 0; list-style: none; }
.project-tech li { color: var(--text-muted); font-size: 13px; }
.project-address, .project-upstream, .project-unavailable { display: flex; align-items: center; gap: 6px; min-height: 36px; font-size: 13px; }
.project-address, .project-unavailable { color: var(--text-muted); }
.project-address .icon, .project-upstream .icon, .project-unavailable .icon { width: 14px; height: 14px; }
.project-address > span { overflow-wrap: anywhere; }
.project-upstream { position: relative; align-self: flex-start; text-underline-offset: 4px; }
.project-upstream:hover, .project-upstream:focus-visible { text-decoration: underline; }
.project-unavailable { flex-wrap: wrap; column-gap: 6px; }
.project-unavailable .domain { flex-basis: 100%; padding-left: 20px; font-size: 12px; }
.personal-footer { border-top: 1px solid var(--divider); background: var(--background); }
.personal-footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 24px; width: 100%; max-width: 1248px; margin: 0 auto; padding: 24px; font-size: 12px; }
.footer-home span { margin-left: 8px; color: var(--text-secondary); }
.footer-home { display: inline-flex; align-items: center; min-height: 36px; }
.personal-footer p { margin: 0; color: var(--text-secondary); }
@media (max-width: 1100px) {
  .feature-cards-container { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 32px; }
}
@media (max-width: 700px) {
  .navbar { position: relative; align-items: flex-start; gap: 0; padding: 16px 24px 12px; }
  .navbar .inner { flex-wrap: wrap; gap: 4px; width: 100%; }
  .logo { flex-basis: 100%; margin: 0 0 10px; }
  .divider { display: none; }
  .item { padding: 5px 10px; }
  .item, .github-link, .project-upstream, .footer-home { min-height: 44px; }
  .navbar .buttons { position: absolute; top: 10px; right: 24px; }
  .page-section-inner { padding-top: 34px; padding-bottom: 44px; }
  h1 { font-size: 32px; }
  .section-description { margin-bottom: 24px; font-size: 14px; }
  .feature-cards-container { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .feature-card { padding-top: 22px; padding-bottom: 22px; }
  .feature-card h2 { font-size: 18px; }
  .project-top { margin-bottom: 10px; }
}
@media (prefers-reduced-motion: reduce) {
  a, .feature-card { transition: none; }
}