:root {
  color-scheme: light;
  --ink: #37352f;
  --muted: #6b6a66;
  --faint: #9b9a97;
  --line: #e5e4e1;
  --paper: #ffffff;
  --soft: #f7f6f3;
  --hover: #efedea;
  --active: #e3e1db;
  --accent: #2eaadc;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.6; }
button, input { font: inherit; letter-spacing: 0; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid color-mix(in srgb, var(--accent) 45%, transparent); outline-offset: 2px; }
.shell { width: min(100% - 32px, 1080px); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line); }
.header-inner { height: 56px; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.brand { color: var(--ink); font-size: 16px; font-weight: 650; text-decoration: none; }
.resource-count { color: var(--muted); font-size: 13px; white-space: nowrap; }
.page-main { min-height: calc(100vh - 136px); padding-block: 48px 72px; }
.intro { max-width: 720px; margin-bottom: 28px; }
.intro h1 { margin: 0 0 8px; font-size: clamp(30px, 5vw, 44px); line-height: 1.2; letter-spacing: 0; }
.intro p { margin: 0; color: var(--muted); font-size: 16px; }
.search-panel { display: flex; align-items: center; gap: 8px; max-width: 720px; margin-bottom: 14px; }
.search-box { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; height: 44px; padding: 0 12px; background: var(--paper); border: 1px solid #d8d7d4; border-radius: 6px; transition: box-shadow 150ms, border-color 150ms; }
.search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 16%, transparent); }
.search-box svg, .icon-button svg { width: 19px; height: 19px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; }
.search-box svg { flex: 0 0 auto; color: var(--faint); }
.search-box input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; color: var(--ink); background: transparent; }
.search-box input::placeholder { color: var(--faint); }
.icon-button { width: 40px; height: 40px; display: inline-grid; place-items: center; padding: 0; color: var(--muted); background: transparent; border: 0; border-radius: 6px; cursor: pointer; transition: background-color 150ms; }
.icon-button:hover { background: var(--hover); }
.icon-button:active { background: var(--active); }
.notice { min-height: 24px; margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.notice.error { color: #a33c36; }
.retry-button { margin-left: 8px; padding: 4px 9px; color: var(--ink); background: transparent; border: 1px solid var(--line); border-radius: 5px; cursor: pointer; }
.category-nav { display: flex; gap: 6px; overflow-x: auto; padding: 4px 0 22px; scrollbar-width: thin; }
.category-nav a { flex: 0 0 auto; padding: 5px 10px; color: var(--muted); background: var(--soft); border-radius: 5px; text-decoration: none; font-size: 14px; transition: background-color 150ms; }
.category-nav a:hover { background: var(--hover); color: var(--ink); }
.category-section { padding: 24px 0 28px; border-top: 1px solid var(--line); scroll-margin-top: 72px; }
.category-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.category-heading h2 { margin: 0; font-size: 21px; line-height: 1.35; letter-spacing: 0; }
.category-heading p { max-width: 620px; margin: 3px 0 0; color: var(--muted); font-size: 14px; }
.category-total { color: var(--faint); font-size: 13px; white-space: nowrap; }
.resource-list { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.resource-card { min-width: 0; padding: 17px 18px; background: var(--paper); border: 1px solid var(--line); border-radius: 7px; transition: background-color 150ms; scroll-margin-top: 80px; }
.resource-card:hover { background: #fbfbfa; }
.resource-card.target { background: #fff9dc; border-color: #e8dca4; }
.resource-topline { display: flex; align-items: flex-start; justify-content: space-between; gap: 10px; }
.resource-card h3 { min-width: 0; margin: 0; font-size: 16px; line-height: 1.45; overflow-wrap: anywhere; }
.resource-code { flex: 0 0 auto; padding: 2px 6px; color: #51606b; background: #eef3f5; border-radius: 4px; font: 12px/1.5 ui-monospace, SFMono-Regular, Consolas, monospace; overflow-wrap: anywhere; }
.resource-description { margin: 9px 0 13px; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; white-space: pre-wrap; }
.link-list { display: flex; flex-wrap: wrap; gap: 6px 12px; margin: 0; padding: 0; list-style: none; }
.link-list a { display: inline-flex; align-items: center; gap: 4px; color: #176b87; font-size: 14px; text-underline-offset: 3px; overflow-wrap: anywhere; }
.link-list svg { width: 14px; height: 14px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.empty-state { padding: 22px; color: var(--muted); background: var(--soft); border-radius: 6px; text-align: center; }
.site-footer { padding: 26px 0; color: var(--muted); background: var(--soft); border-top: 1px solid var(--line); font-size: 13px; }
[hidden] { display: none !important; }
@media (max-width: 720px) {
  .page-main { padding-block: 32px 52px; }
  .resource-list { grid-template-columns: 1fr; }
  .category-heading { align-items: flex-start; }
  .resource-topline { display: block; }
  .resource-code { display: inline-block; margin-top: 6px; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } * { transition-duration: 0.01ms !important; } }