* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", Arial, sans-serif;
  color: #e2e8f0;
  background: radial-gradient(900px 420px at 15% 0%, rgba(30,58,138,.35), transparent 60%),
              radial-gradient(800px 420px at 95% 10%, rgba(14,116,144,.28), transparent 55%),
              linear-gradient(180deg, #050913, #0b1220 55%, #0f172a);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(56,189,248,.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(56,189,248,.08) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
  mask-image: radial-gradient(circle at 30% 0%, rgba(0,0,0,.7), transparent 60%);
  z-index: -1;
}
.header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 6vw;
  background: rgba(7,18,38,.88);
  color: #e2e8f0;
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 12px rgba(2,6,23,.3);
  border-bottom: 1px solid rgba(56,189,248,.25);
}
.logo {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: rgba(37,99,235,.12);
  border: 1px solid rgba(37,99,235,.35);
  display: grid;
  place-items: center;
  box-shadow: 0 10px 24px rgba(37,99,235,.22);
}
.logo img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
}
.title h1 { font-size: 20px; color: #e2e8f0; }
.title p { color: #94a3b8; font-size: 13px; }
.back-home {
  margin-left: auto;
  padding: 8px 12px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0ea5e9, #4f46e5);
  color: #fff;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease;
  box-shadow: 0 10px 22px rgba(79,70,229,.35);
}
.back-home:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(79,70,229,.45); }

.banner {
  margin: 18px 6vw 0;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 16px;
  background: rgba(7,18,38,.82);
  border: 1px solid rgba(56,189,248,.35);
  border-radius: 18px;
  padding: 18px 20px;
  backdrop-filter: blur(8px);
  box-shadow: 0 0 32px rgba(14,165,233,.15), 0 14px 30px rgba(2,6,23,.35);
  animation: glowIn .6s ease;
  position: relative;
  overflow: hidden;
}
.banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, transparent, rgba(14,165,233,.2), transparent);
  animation: sweep 4s linear infinite;
}
.banner-text h2 { font-size: 20px; margin-bottom: 8px; color: #e2e8f0; }
.banner-text p { color: #cbd5f5; line-height: 1.7; }
.banner-meta {
  margin-top: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.banner-meta span {
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 999px;
  background: rgba(14,165,233,.12);
  border: 1px solid rgba(14,165,233,.35);
  color: #38bdf8;
  box-shadow: 0 0 12px rgba(14,165,233,.35);
}
.banner-panel {
  display: grid;
  gap: 12px;
  align-content: center;
  padding: 10px 14px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(14,165,233,.1), rgba(99,102,241,.1));
  border: 1px dashed rgba(56,189,248,.45);
  color: #e2e8f0;
}
.banner-panel strong { font-size: 14px; color: #e2e8f0; }
.banner-panel p { color: #cbd5f5; font-size: 13px; }

.controls {
  padding: 20px 6vw 10px;
  display: grid;
  gap: 14px;
}
.group-switch, .tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.btn {
  padding: 10px 16px;
  border-radius: 999px;
  border: 1px solid rgba(56,189,248,.35);
  background: rgba(7,18,38,.6);
  color: #cbd5f5;
  cursor: pointer;
  transition: all .2s ease;
  backdrop-filter: blur(6px);
}
.btn.active {
  background: linear-gradient(135deg, #0ea5e9, #4f46e5);
  border-color: rgba(56,189,248,.6);
  color: #fff;
  box-shadow: 0 8px 18px rgba(56,189,248,.25);
}

.content { padding: 10px 6vw 40px; flex: 1; }
.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  animation: fadeIn .35s ease;
}
.card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 14px;
  border-radius: 14px;
  background: rgba(7,18,38,.78);
  border: 1px solid rgba(56,189,248,.25);
  text-decoration: none;
  color: #e2e8f0;
  transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
  backdrop-filter: blur(8px);
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(56,189,248,.6);
  box-shadow: 0 0 24px rgba(56,189,248,.2), 0 12px 24px rgba(2,6,23,.35);
}
.card .thumb {
  height: 110px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(14,165,233,.18), rgba(99,102,241,.18));
  display: grid;
  place-items: center;
  color: #e2e8f0;
  font-weight: 600;
}
.card h3 { font-size: 16px; color: #e2e8f0; }
.card p { color: #cbd5f5; font-size: 13px; line-height: 1.5; }
.card .path { font-size: 12px; color: #94a3b8; }

.footer {
  text-align: center;
  padding: 16px;
  color: #94a3b8;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes glowIn {
  from { opacity: 0; transform: translateY(8px) scale(.98); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}
@keyframes sweep {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@media (max-width: 1100px) {
  .grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .banner { grid-template-columns: 1fr; }
}
@media (max-width: 820px) {
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .header { flex-wrap: wrap; }
  .back-home { margin-left: 0; }
}