:root {
  --bg: #05060a;
  --bg-2: #0a0c16;
  --text: #eef1fb;
  --muted: #9aa3c0;
  --line: rgba(255, 255, 255, 0.08);
  --card: rgba(22, 26, 46, 0.82);
  --card-hi: rgba(38, 44, 72, 0.92);
  --accent: #7b8cff;
  --halo: #5b3fff;
  --maxw: 1120px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
}

body {
  background: radial-gradient(130% 100% at 50% -10%, #11132a 0%, var(--bg-2) 42%, var(--bg) 100%);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei",
    "Segoe UI", system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  position: relative;
}

/* ---------- 背景：星空 + 黑洞 ---------- */
#starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  display: block;
  width: 100%;
  height: 100%;
}

.blackhole {
  position: fixed;
  top: 20%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: min(78vw, 640px);
  height: min(78vw, 640px);
  z-index: 1;
  pointer-events: none;
  filter: blur(0.4px);
}

.blackhole .disk,
.blackhole .disk2 {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    rgba(123, 140, 255, 0) 0deg,
    rgba(123, 140, 255, 0.05) 40deg,
    rgba(180, 120, 255, 0.55) 120deg,
    rgba(255, 170, 120, 0.65) 180deg,
    rgba(123, 140, 255, 0.25) 260deg,
    rgba(123, 140, 255, 0) 360deg
  );
  -webkit-mask: radial-gradient(closest-side, transparent 55%, #000 60%, #000 78%, transparent 82%);
  mask: radial-gradient(closest-side, transparent 55%, #000 60%, #000 78%, transparent 82%);
  animation: spin 26s linear infinite;
  opacity: 0.85;
}

.blackhole .disk2 {
  animation-duration: 42s;
  animation-direction: reverse;
  transform: scale(1.18) rotate(18deg);
  opacity: 0.4;
  filter: blur(6px);
}

.blackhole .core {
  position: absolute;
  inset: 24%;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 50%, #000 58%, rgba(0, 0, 0, 0.85) 70%, transparent 72%);
  box-shadow: 0 0 60px 20px rgba(0, 0, 0, 0.9) inset;
}

.blackhole .glow {
  position: absolute;
  inset: -14%;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(91, 63, 255, 0.28) 0%, transparent 60%);
  animation: pulse 7s ease-in-out infinite;
}

.nebula {
  position: fixed;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    radial-gradient(40% 30% at 18% 78%, rgba(120, 80, 255, 0.14), transparent 70%),
    radial-gradient(36% 28% at 85% 30%, rgba(255, 130, 90, 0.10), transparent 70%);
}

.vignette {
  position: fixed;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: radial-gradient(120% 90% at 50% 35%, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.06); }
}

/* ---------- 内容 ---------- */
.wrap {
  position: relative;
  z-index: 5;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(48px, 10vh, 120px) 20px 60px;
}

.hero {
  text-align: center;
  margin-bottom: clamp(32px, 6vh, 72px);
}

.badge {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(6px);
}

.title {
  font-size: clamp(40px, 9vw, 78px);
  line-height: 1.05;
  margin: 18px 0 10px;
  font-weight: 800;
  letter-spacing: 2px;
  background: linear-gradient(180deg, #ffffff 0%, #b9c0ff 60%, #8a7bff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 0 0 40px rgba(123, 140, 255, 0.35);
}

.subtitle {
  color: var(--muted);
  font-size: clamp(14px, 2.6vw, 18px);
  margin: 0 0 28px;
}

.search {
  display: flex;
  align-items: center;
  gap: 10px;
  width: min(520px, 100%);
  margin: 0 auto;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(10, 12, 22, 0.55);
  backdrop-filter: blur(12px);
  transition: border-color 0.25s, box-shadow 0.25s;
}
.search:focus-within {
  border-color: rgba(123, 140, 255, 0.6);
  box-shadow: 0 0 0 4px rgba(123, 140, 255, 0.12);
}
.search svg { width: 20px; height: 20px; color: var(--muted); flex: none; }
.search input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 16px;
}
.search input::placeholder { color: var(--muted); }

/* ---------- 卡片网格 ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 18px;
}

.card {
  position: relative;
  display: block;
  padding: 22px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 20px;
  background: var(--card);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 50px -18px rgba(0, 0, 0, 0.75),
              inset 0 1px 0 rgba(255, 255, 255, 0.06);
  text-decoration: none;
  color: inherit;
  overflow: hidden;
  transition: transform 0.28s cubic-bezier(.2,.7,.2,1), border-color 0.28s, background 0.28s, box-shadow 0.28s;
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.6s forwards;
}
@keyframes rise { to { opacity: 1; transform: translateY(0); } }

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(135deg, var(--c-accent, var(--accent)), transparent 55%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0.45;
  transition: opacity 0.3s;
}

.card::after {
  content: "";
  position: absolute;
  width: 260px;
  height: 260px;
  top: var(--my, -40%);
  left: var(--mx, 50%);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--c-accent, var(--accent)) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
  filter: blur(10px);
  mix-blend-mode: screen;
}

.card:hover {
  transform: translateY(-6px);
  background: var(--card-hi);
  border-color: transparent;
  box-shadow: 0 26px 60px -16px rgba(0, 0, 0, 0.8),
              0 0 32px -6px var(--c-accent, var(--accent)),
              inset 0 1px 0 rgba(255, 255, 255, 0.1);
}
.card:hover::before { opacity: 1; }
.card:hover::after { opacity: 0.18; }

.card-top {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.card-icon {
  flex: none;
  width: 52px;
  height: 52px;
  display: grid;
  place-items: center;
  font-size: 26px;
  border-radius: 14px;
  background: radial-gradient(circle at 30% 25%, rgba(255,255,255,0.14), rgba(255,255,255,0.02));
  border: 1px solid var(--line);
  box-shadow: 0 0 24px -6px var(--c-accent, var(--accent));
}
.card-name {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 4px;
}
.card-tag {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.5px;
}
.card-desc {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.65;
  margin: 0 0 18px;
  min-height: 46px;
}
.card-go {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--text);
  opacity: 0.85;
}
.card-go .host { color: var(--c-accent, var(--accent)); }
.card-go svg { width: 15px; height: 15px; transition: transform 0.25s; }
.card:hover .card-go svg { transform: translateX(4px); }

.empty {
  grid-column: 1 / -1;
  text-align: center;
  color: var(--muted);
  padding: 60px 0;
  font-size: 15px;
}

.foot {
  text-align: center;
  color: var(--muted);
  font-size: 13px;
  margin-top: 56px;
  opacity: 0.8;
}
.foot .dot { margin: 0 8px; }
.foot .beian { margin-top: 8px; }
.foot .beian a {
  color: var(--muted);
  text-decoration: none;
  font-size: 12px;
  letter-spacing: 0.5px;
  transition: color 0.2s;
}
.foot .beian a:hover { color: var(--text); }

/* ---------- 移动端 ---------- */
@media (max-width: 640px) {
  .wrap { padding: 44px 16px 48px; }
  .grid { grid-template-columns: 1fr; gap: 14px; }
  .blackhole { top: 14%; width: min(90vw, 420px); height: min(90vw, 420px); }
  .card { padding: 18px; }
  .card-desc { min-height: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .blackhole .disk, .blackhole .disk2, .blackhole .glow { animation: none; }
  .card { animation: none; opacity: 1; transform: none; }
}