:root {
  --bg:        oklch(97% 0.008 250);
  --surface:   oklch(100% 0 0 / 0.72);
  --fg:        oklch(22% 0.02 240);
  --muted:     oklch(48% 0.018 240);
  --border:    oklch(100% 0 0 / 0.35);
  --accent:    oklch(56% 0.17 145);
  --accent-soft: oklch(58% 0.16 145 / 0.12);
  --sidebar-bg: oklch(100% 0 0 / 0.55);

  --glass-bg: oklch(100% 0 0 / 0.72);
  --glass-border: oklch(100% 0 0 / 0.45);
  --glass-blur: 16px;
  --glass-shadow: 0 8px 32px oklch(0% 0 0 / 0.08);
  --glass-shadow-hover: 0 12px 40px oklch(0% 0 0 / 0.12);

  --bg-gradient:
    radial-gradient(ellipse 80% 60% at 15% -10%, oklch(58% 0.16 145 / 0.14), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 5%, oklch(55% 0.12 250 / 0.12), transparent 50%),
    var(--bg);

  --font-display: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-body:    -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'IBM Plex Mono', ui-monospace, Menlo, monospace;

  --radius-sm: 6px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --shadow-sm: 0 1px 2px oklch(0% 0 0 / 0.04);
  --shadow-md: 0 4px 16px oklch(0% 0 0 / 0.08);
  --sidebar-w: 240px;
  --transition: 200ms ease-out;
}

[data-theme="dark"] {
  --bg:        oklch(14% 0.015 240);
  --surface:   oklch(20% 0.012 240 / 0.65);
  --fg:        oklch(92% 0.005 250);
  --muted:     oklch(62% 0.015 240);
  --border:    oklch(100% 0 0 / 0.08);
  --sidebar-bg: oklch(18% 0.012 240 / 0.55);
  --accent-soft: oklch(58% 0.16 145 / 0.15);

  --glass-bg: oklch(20% 0.012 240 / 0.65);
  --glass-border: oklch(100% 0 0 / 0.1);
  --glass-shadow: 0 8px 32px oklch(0% 0 0 / 0.35);
  --glass-shadow-hover: 0 12px 40px oklch(0% 0 0 / 0.45);

  --bg-gradient:
    radial-gradient(ellipse 80% 60% at 15% -10%, oklch(58% 0.16 145 / 0.1), transparent 55%),
    radial-gradient(ellipse 70% 50% at 85% 5%, oklch(55% 0.12 250 / 0.08), transparent 50%),
    var(--bg);

  --shadow-sm: 0 1px 2px oklch(0% 0 0 / 0.25);
  --shadow-md: 0 4px 16px oklch(0% 0 0 / 0.35);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-font-smoothing:antialiased}
body{
  font-family:var(--font-body);
  background:var(--bg-gradient);
  background-attachment:fixed;
  color:var(--fg);
  line-height:1.5;
  min-height:100vh;
  transition:background var(--transition),color var(--transition);
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  opacity:.025;
  background-image:url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}
[data-theme="dark"] body::before{opacity:.04}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;color:inherit}

.glass{
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  backdrop-filter:blur(var(--glass-blur));
  -webkit-backdrop-filter:blur(var(--glass-blur));
  box-shadow:var(--glass-shadow);
}

.skip-link{position:absolute;left:-999px;top:10px;padding:8px 14px;background:var(--glass-bg);color:var(--fg);border:1px solid var(--glass-border);border-radius:var(--radius-sm);z-index:999;font-size:13px;backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur))}
.skip-link:focus{left:12px;outline:none;box-shadow:0 0 0 2px oklch(58% 0.16 145 / 0.4)}

.app{display:flex;height:100vh;overflow:hidden;position:relative}

.sidebar{
  width:var(--sidebar-w);
  flex-shrink:0;
  height:100vh;
  display:flex;
  flex-direction:column;
  background:var(--glass-bg);
  border-right:1px solid var(--glass-border);
  backdrop-filter:blur(var(--glass-blur));
  -webkit-backdrop-filter:blur(var(--glass-blur));
  box-shadow:var(--glass-shadow);
  overflow-y:auto;
  transition:background var(--transition),border-color var(--transition);
  z-index:45;
}
.sidebar-brand{display:flex;align-items:center;gap:8px;padding:20px 20px 16px}
.sidebar-logo{
  font-family:var(--font-display);font-size:17px;font-weight:800;
  color:var(--accent);line-height:1;letter-spacing:-.04em;
  filter:drop-shadow(0 0 8px oklch(58% 0.16 145 / 0.35));
}
.sidebar-title{font-family:var(--font-mono);font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--fg)}
.sidebar-nav{flex:1;display:flex;flex-direction:column;gap:2px;padding:0 10px}
.nav-item{
  display:flex;align-items:center;gap:8px;padding:8px 12px 8px 14px;
  border-radius:var(--radius-sm);font-size:13px;font-weight:500;color:var(--muted);
  background:none;border:none;width:100%;text-align:left;cursor:pointer;
  transition:all var(--transition);letter-spacing:.01em;
  border-left:2px solid transparent;
}
.nav-item:hover{background:oklch(0% 0 0 / .04);color:var(--fg)}
[data-theme="dark"] .nav-item:hover{background:oklch(100% 0 0 / .05)}
.nav-item.active{
  background:var(--accent-soft);
  color:var(--fg);
  font-weight:600;
  border-left-color:var(--accent);
}
.nav-icon{font-size:14px;width:20px;text-align:center;flex-shrink:0;line-height:1}
.nav-divider{font-family:var(--font-mono);font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:16px 12px 4px;opacity:.5}
.nav-spacer{flex:1;min-height:16px}
.nav-badge{margin-left:auto;font-family:var(--font-mono);font-size:11px;font-weight:600;font-variant-numeric:tabular-nums;color:var(--accent);opacity:.7}
.sidebar-footer{padding:8px 10px 12px;border-top:1px solid var(--glass-border)}
.theme-btn{
  display:flex;align-items:center;gap:8px;width:100%;
  padding:8px 12px 8px 14px;
  border-radius:var(--radius-sm);
  border:none;border-left:2px solid transparent;
  background:none;color:var(--muted);
  font-size:13px;font-weight:500;letter-spacing:.01em;
  cursor:pointer;text-align:left;
  transition:all var(--transition);
}
.theme-btn:hover{background:oklch(0% 0 0 / .04);color:var(--fg)}
[data-theme="dark"] .theme-btn:hover{background:oklch(100% 0 0 / .05)}
.theme-icon{font-size:14px;width:20px;text-align:center;flex-shrink:0;line-height:1}

.main{flex:1;height:100vh;overflow-y:auto;overflow-x:hidden;scroll-behavior:smooth;background:transparent;transition:color var(--transition)}
.main:focus{outline:none}

.landing-home{max-width:960px;margin:0 auto;padding:40px 32px 80px}
.landing-hero{text-align:center;margin-bottom:28px}
.landing-search-sticky{
  position:sticky;top:0;z-index:20;
  padding:10px 0 12px;margin:0 -32px 48px;
  padding-left:32px;padding-right:32px;
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
}
[data-theme="dark"] .landing-search-sticky{
  /* background:linear-gradient(to bottom, var(--bg) 0%, var(--bg) 85%, oklch(0% 0 0 / 0) 100%); */
}
.landing-search-sticky .search-wrapper{margin:0}
.greeting{font-family:var(--font-mono);font-size:12px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.hero-title{
  font-family:var(--font-display);
  font-size:clamp(24px,3.5vw,34px);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.25;
  margin-bottom:0;
  background:linear-gradient(135deg, var(--fg) 0%, oklch(45% 0.06 145) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  -webkit-text-fill-color:transparent;
}
[data-theme="dark"] .hero-title{
  background:none;
  -webkit-text-fill-color:var(--fg);
  color:var(--fg);
}

.search-wrapper{position:relative;width:100%}
.search-hero .search-bar{height:48px}
.search-compact .search-bar{height:40px}
.search-bar{
  display:flex;align-items:stretch;
  min-width:0;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  backdrop-filter:blur(var(--glass-blur));
  -webkit-backdrop-filter:blur(var(--glass-blur));
  transition:border-color var(--transition),box-shadow var(--transition),transform var(--transition);
  box-shadow:var(--shadow-sm);
}
.search-bar:focus-within{
  border-color:oklch(58% 0.16 145 / 0.5);
  box-shadow:0 0 0 3px oklch(58% 0.16 145 / 0.18), var(--glass-shadow);
}
.search-icon-svg{flex:0 0 44px;width:44px;display:flex;align-items:center;justify-content:center;color:var(--muted)}
.search-compact .search-icon-svg{flex-basis:38px;width:38px}
.search-input{
  flex:1 1 0;min-width:0;width:0;
  border:none;outline:none;background:transparent;
  font-family:var(--font-body);font-size:15px;color:var(--fg);
  padding:0 8px 0 0;height:auto;align-self:center;
}
.search-input::placeholder{color:var(--muted);opacity:.55}
.search-bar-trailing{
  flex:0 1 auto;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:stretch;
  min-width:0;
  max-width:min(52%,260px);
}
.search-engine-row{
  grid-column:1;
  min-width:0;
  display:flex;align-items:center;gap:2px;
  padding:0 4px;margin:4px 0;
  overflow-x:auto;overflow-y:hidden;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:none;
  scroll-padding-inline-end:8px;
}
.search-engine-row::-webkit-scrollbar{display:none}
.engine-btn{
  flex:0 0 auto;background:none;border:none;color:var(--muted);
  font-family:var(--font-mono);font-size:10px;font-weight:600;
  letter-spacing:.04em;text-transform:uppercase;
  padding:3px 6px;border-radius:var(--radius-sm);
  cursor:pointer;transition:all var(--transition);opacity:.45;
  white-space:nowrap;
}
.engine-btn:hover{opacity:.75}
.engine-btn.active{opacity:1;color:var(--accent);background:var(--accent-soft)}
.clear-btn{
  grid-column:2;
  align-self:stretch;
  width:0;min-width:0;padding:0;margin:0;
  overflow:hidden;border:none;
  background:var(--glass-bg);
  color:var(--muted);font-size:16px;
  cursor:pointer;opacity:0;pointer-events:none;
  transition:width var(--transition),min-width var(--transition),opacity var(--transition);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.clear-btn.on{
  width:32px;min-width:32px;
  opacity:1;pointer-events:auto;
}
.clear-btn:hover{opacity:1}

.search-suggestions{
  position:absolute;top:calc(100% + 8px);left:0;right:0;
  background:var(--glass-bg);
  border:1px solid var(--glass-border);
  border-radius:var(--radius-md);
  backdrop-filter:blur(var(--glass-blur));
  -webkit-backdrop-filter:blur(var(--glass-blur));
  box-shadow:var(--glass-shadow-hover);
  overflow:hidden;
  display:none;z-index:10;
  opacity:0;
  transform:translateY(-4px);
  transition:opacity .18s ease-out,transform .18s ease-out;
}
.search-suggestions.on{display:block;opacity:1;transform:translateY(0)}
.sug-item{display:flex;align-items:center;gap:10px;padding:10px 14px;cursor:pointer;transition:background var(--transition)}
.sug-item:hover,.sug-item.active{background:var(--accent-soft)}
.sug-icon{
  flex-shrink:0;width:28px;height:28px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:14px;
  background:oklch(100% 0 0 / 0.5);border:1px solid var(--glass-border);
}
[data-theme="dark"] .sug-icon{background:oklch(100% 0 0 / 0.06)}
.sug-info{flex:1;min-width:0}
.sug-title{font-size:13px;font-weight:600;line-height:1.3;color:var(--fg)}
.sug-desc{font-size:12px;color:var(--muted);line-height:1.3;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sug-hint{font-family:var(--font-mono);font-size:10px;color:var(--muted);opacity:.6;letter-spacing:.04em;flex-shrink:0}

.home-sections{padding-top:12px}
.home-section{
  scroll-margin-top:80px;
  padding:44px 0 24px;
  border-top:1px solid var(--glass-border);
}
.home-section:first-child{border-top:none;padding-top:8px}
.home-section-head{
  display:flex;align-items:baseline;flex-wrap:wrap;gap:8px 12px;
  margin-bottom:16px;
}
.home-section-title{
  font-family:var(--font-display);font-size:20px;font-weight:700;
  letter-spacing:-.02em;color:var(--fg);
}
.home-section-count{
  font-family:var(--font-mono);font-size:12px;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.home-section-more{
  margin-left:auto;padding:0;
  font-size:13px;font-weight:500;color:var(--accent);
  letter-spacing:.01em;
  background:none;border:none;cursor:pointer;font-family:inherit;
}
.home-section-more:hover{text-decoration:underline}

.group-view{max-width:960px;margin:0 auto;padding:40px 32px 80px}
.group-header{display:flex;align-items:baseline;gap:12px;margin-bottom:20px}
.group-title{font-family:var(--font-display);font-size:24px;font-weight:700;letter-spacing:-.02em;color:var(--fg)}
.group-count{font-family:var(--font-mono);font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.group-toolbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:10px}
.group-toolbar .search-wrapper{max-width:480px;flex:1;min-width:0}

.link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}
.link-grid.by-group{display:block}
.by-group>.section-hdr{font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:28px 0 8px;margin-bottom:2px}
.by-group>.section-hdr:first-child{padding-top:0}
.by-group>.section-grp{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;margin-bottom:8px}

.card{
  display:flex;align-items:flex-start;gap:12px;padding:16px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:var(--radius-md);cursor:pointer;
  transition:transform var(--transition),box-shadow var(--transition),border-color var(--transition);
  color:inherit;position:relative;
  backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));
  box-shadow:var(--glass-shadow);
}
.card:hover{border-color:oklch(58% 0.16 145 / 0.35);box-shadow:var(--glass-shadow-hover);transform:translateY(-2px)}
.card-icon{
  flex-shrink:0;width:34px;height:34px;border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;font-size:16px;
  background:oklch(100% 0 0 / 0.55);border:1px solid var(--glass-border);
  line-height:1;overflow:hidden;
}
[data-theme="dark"] .card-icon{background:oklch(100% 0 0 / 0.06)}
.card-icon img,.sug-icon img,.feat-icon img{width:20px;height:20px;object-fit:contain;display:block}
.card-body{flex:1;min-width:0}
.card-title{font-size:14px;font-weight:600;line-height:1.3;color:var(--fg);letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card-desc{font-size:12px;color:var(--muted);margin-top:3px;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-meta{display:flex;align-items:center;gap:6px;margin-top:8px;flex-wrap:wrap}
.card-host{font-size:11px;color:var(--muted);opacity:.7;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:160px}
.card-tags{display:flex;flex-wrap:wrap;gap:4px}
.tag{font-size:10px;padding:2px 7px;border-radius:10px;border:1px solid var(--glass-border);color:var(--muted);font-weight:500;letter-spacing:.02em;text-transform:uppercase;background:oklch(100% 0 0 / 0.25)}
[data-theme="dark"] .tag{background:oklch(100% 0 0 / 0.04)}
.card-star{
  position:absolute;top:8px;right:8px;background:none;border:none;
  color:var(--muted);font-size:14px;cursor:pointer;
  padding:4px 6px;line-height:1;opacity:0;
  transition:all var(--transition);border-radius:999px;
}
.card:hover .card-star{opacity:.35}
.card-star:hover{
  opacity:1!important;
  background:var(--glass-bg);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  box-shadow:var(--shadow-sm);
}
.card-star.on{opacity:1;color:var(--accent)}

.empty-state{text-align:center;padding:72px 20px;color:var(--muted)}
.empty-icon{font-size:40px;margin-bottom:14px;opacity:.5}
.empty-title{font-size:16px;font-weight:600;color:var(--fg);margin-bottom:6px}
.empty-desc{font-size:13px;color:var(--muted)}
.empty-action{display:inline-block;margin-top:16px;padding:6px 16px;background:var(--accent);color:#fff;font-size:13px;font-weight:600;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:opacity var(--transition)}
.empty-action:hover{opacity:.85}

.error-state{text-align:center;padding:80px 20px}
.error-code{font-family:var(--font-mono);font-size:13px;color:var(--accent);font-weight:600}
.error-msg{margin-top:8px;font-size:15px;font-weight:600;color:var(--fg)}
.error-detail{margin-top:6px;font-size:13px;color:var(--muted);font-family:var(--font-mono)}

.app-footer{text-align:center;padding:32px 0;border-top:1px solid var(--glass-border);margin-top:40px}
.footer-text{font-family:var(--font-mono);font-size:11px;color:var(--muted);letter-spacing:.04em}
.footer-text kbd{
  font-family:var(--font-mono);font-size:10px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:3px;padding:1px 5px;color:var(--muted);
}

.hamburger{
  display:none;position:fixed;top:12px;left:12px;z-index:60;
  width:44px;height:44px;
  background:var(--glass-bg);border:1px solid var(--glass-border);
  border-radius:999px;font-size:18px;color:var(--fg);cursor:pointer;
  align-items:center;justify-content:center;
  backdrop-filter:blur(var(--glass-blur));-webkit-backdrop-filter:blur(var(--glass-blur));
  box-shadow:var(--glass-shadow);
  transition:transform var(--transition),box-shadow var(--transition);
}
.hamburger:active{transform:scale(.96)}
.sidebar-overlay{
  display:none;position:fixed;inset:0;
  background:oklch(0% 0 0 / .4);
  backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);
  z-index:40;opacity:0;pointer-events:none;
  transition:opacity .22s ease;
}
.sidebar-overlay.on{opacity:1;pointer-events:auto}
.engine-l-short{display:none}

.noscript{
  padding:14px;margin:18px;border-radius:var(--radius-md);
  border:1px solid var(--glass-border);background:var(--glass-bg);
  text-align:center;font-size:14px;color:var(--muted);
}

@media(max-width:840px){
  .hamburger{display:flex}
  .sidebar-overlay{display:block}
  .sidebar{
    position:fixed;top:0;left:0;bottom:0;
    z-index:50;
    transform:translateX(calc(-1 * var(--sidebar-w)));
    transition:transform .22s ease;
    box-shadow:var(--glass-shadow-hover);
  }
  .sidebar.open{transform:translateX(0)}
  .landing-home{padding:32px 20px 64px}
  .landing-search-sticky{padding:8px 0 12px;margin:0 -20px 40px;padding-left:20px;padding-right:20px}
  .home-section{padding:36px 0 20px;scroll-margin-top:80px}
  .group-view{padding:24px 20px 64px;padding-top:64px}
}

@media(max-width:720px){
  .search-bar-trailing{max-width:min(58%,200px)}
  .engine-btn{padding:3px 5px;font-size:9px}
  .search-compact .search-icon-svg{flex-basis:34px;width:34px}
  .clear-btn.on{width:30px;min-width:30px}
}

@media(max-width:540px){
  .landing-home{padding:24px 16px 48px}
  .landing-search-sticky{padding:8px 0 10px;margin:0 -16px 32px;padding-left:16px;padding-right:16px}
  .home-section{scroll-margin-top:72px;padding:32px 0 16px}
  .group-view{padding:20px 16px 48px;padding-top:56px}
  .group-toolbar{flex-direction:column;align-items:stretch}
  .group-toolbar .search-wrapper{max-width:100%}
  .link-grid{grid-template-columns:1fr}
  .by-group>.section-grp{grid-template-columns:1fr}
  .search-hero .search-bar,.search-compact .search-bar{height:44px}
  .search-icon-svg{flex-basis:32px;width:32px}
  .search-compact .search-icon-svg{flex-basis:32px;width:32px}
  .search-bar-trailing{max-width:min(62%,220px)}
  .search-engine-row{padding:0 2px;margin:3px 0}
  .engine-l-full{display:none}
  .engine-l-short{display:inline}
  .engine-btn{padding:3px 5px;font-size:9px;min-width:26px;text-align:center}
  .clear-btn.on{width:28px;min-width:28px}
  .hero-title{font-size:22px}
  :root{--glass-blur:12px}
}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
  .card:hover{transform:none}
  .search-suggestions{transition:none}
}