.hero{
  padding: 96px 0 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before{
  content: "";
  position: absolute;
  top: -220px; left: 50%; transform: translateX(-50%);
  width: 780px; height: 420px;
  background: var(--b-gradient);
  filter: blur(120px);
  opacity: .16;
  z-index: -1;
}

.hero-mark{
  width: 76px; height: 76px;
  margin: 0 auto 26px;
  border-radius: 22px;
  background: var(--b-gradient);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow-pop);
  animation: mark-in .7s cubic-bezier(.2,.8,.2,1) both;
}
.hero-mark svg{ width: 40px; height: 40px; }

@keyframes mark-in{
  from{ opacity: 0; transform: translateY(10px) scale(.9); }
  to{ opacity: 1; transform: translateY(0) scale(1); }
}

.hero h1{
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(34px, 5.4vw, 56px);
  letter-spacing: -.03em;
  line-height: 1.05;
  margin: 0 0 16px;
}
.hero h1 span{
  background: var(--b-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero p.lede{
  max-width: 520px;
  margin: 0 auto 36px;
  color: var(--ink-soft);
  font-size: 17px;
  line-height: 1.55;
}

.search-shell{
  max-width: 560px;
  margin: 0 auto;
  position: relative;
}
.search-shell input{
  width: 100%;
  padding: 15px 20px 15px 46px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--bg-soft);
  font-size: 15px;
  font-family: var(--f-body);
  color: var(--ink);
  transition: border-color .15s ease, background .15s ease, box-shadow .15s ease;
}
.search-shell input:focus{
  outline: none;
  border-color: var(--b-pink);
  background: #fff;
  box-shadow: 0 0 0 4px rgba(236,72,153,.10);
}
.search-shell svg{
  position: absolute; left: 18px; top: 50%; transform: translateY(-50%);
  width: 17px; height: 17px; stroke: var(--muted);
}

.stat-row{
  display: flex; justify-content: center; gap: 34px;
  margin-top: 30px;
  font-size: 13px; color: var(--muted);
}
.stat-row b{ color: var(--ink); font-family: var(--f-mono); font-weight: 600; }

/* ---------- library section ---------- */
.lib-section{ padding: 20px 0 40px; }
.lib-section-head{
  display: flex; align-items: baseline; justify-content: space-between;
  margin-bottom: 22px; gap: 12px; flex-wrap: wrap;
}
.lib-section-head h2{
  font-family: var(--f-display); font-size: 21px; font-weight: 700; margin: 0;
  letter-spacing: -.01em;
}
.lib-section-head .src{
  font-size: 12.5px; color: var(--muted); font-family: var(--f-mono);
}
.lib-section-head .src a{ color: var(--ink-soft); border-bottom: 1px dotted var(--line); }

.lib-grid{
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
@media (max-width: 860px){ .lib-grid{ grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 580px){ .lib-grid{ grid-template-columns: 1fr; } }

.lib-card{
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 20px;
  background: var(--bg-card);
  box-shadow: var(--shadow-card);
  transition: transform .16s ease, box-shadow .16s ease, border-color .16s ease;
  display: flex; flex-direction: column; gap: 12px;
}
.lib-card:hover{
  transform: translateY(-3px);
  border-color: transparent;
  box-shadow: var(--shadow-pop);
}
.lib-card-top{ display: flex; align-items: center; gap: 10px; }
.lib-glyph{
  width: 34px; height: 34px; border-radius: 9px;
  background: var(--b-gradient);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-family: var(--f-mono); font-weight: 600; font-size: 13px;
  flex: none;
}
.lib-card h3{
  font-family: var(--f-display); font-size: 16px; font-weight: 700; margin: 0;
}
.lib-card p{
  margin: 0; font-size: 13px; color: var(--muted); line-height: 1.5;
  min-height: 34px;
}
.lib-card-foot{
  display: flex; align-items: center; justify-content: space-between;
  margin-top: auto; padding-top: 12px; border-top: 1px solid var(--line-soft);
}
.lib-card-foot .go{
  font-size: 12.5px; font-weight: 600; color: var(--ink-soft);
  display: flex; align-items: center; gap: 4px;
}
.lib-card:hover .lib-card-foot .go{ color: var(--b-pink); }

/* skeleton / empty / error states */
.skel{
  border: 1px solid var(--line); border-radius: var(--radius-md);
  padding: 20px; background: var(--bg-soft);
  height: 122px;
  position: relative; overflow: hidden;
}
.skel::after{
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.7), transparent);
  transform: translateX(-100%);
  animation: shimmer 1.3s infinite;
}
@keyframes shimmer{ to{ transform: translateX(100%); } }

.state-note{
  grid-column: 1 / -1;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
  text-align: center;
  color: var(--muted);
  font-size: 13.5px;
}
.state-note code{
  font-family: var(--f-mono); background: var(--bg-soft);
  padding: 2px 6px; border-radius: 6px; font-size: 12px;
}