:root {
  --bg: #07090d;
  --card: rgba(16, 20, 28, 0.72);
  --line: rgba(122, 240, 255, 0.22);
  --text: #eef7fb;
  --muted: #8aa0ad;
  --cyan: #7af0ff;
  --violet: #c084fc;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
}

.bg-grid {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(122, 240, 255, 0.08), transparent 60%),
    linear-gradient(rgba(122, 240, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122, 240, 255, 0.05) 1px, transparent 1px);
  background-size: auto, 48px 48px, 48px 48px;
  mask-image: radial-gradient(ellipse at center, #000 40%, transparent 85%);
  pointer-events: none;
  z-index: 0;
}

.scene {
  position: fixed;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  overflow: hidden;
}

.portal {
  position: absolute;
  width: 28px;
  height: 156px;
  margin-left: -14px;
  margin-top: -78px;
  transform: scale(0.15);
  opacity: 0;
  filter: drop-shadow(0 0 10px rgba(168, 85, 247, 0.7)) drop-shadow(0 0 22px rgba(122, 240, 255, 0.28));
}
.portal img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
}
.portal.on {
  animation: portal-in 0.9s cubic-bezier(0.2, 0.9, 0.2, 1) forwards;
}
.portal.out {
  animation: portal-out 0.7s ease forwards;
}

@keyframes portal-in {
  0% { transform: scale(0.12); opacity: 0; }
  60% { opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes portal-out {
  to { transform: scale(0.2); opacity: 0; }
}

.cat {
  position: absolute;
  width: 158px;
  height: 122px;
  margin-top: -61px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
  pointer-events: auto;
  z-index: 2;
  opacity: 0;
  filter: drop-shadow(0 0 10px rgba(122, 240, 255, 0.35));
  touch-action: manipulation;
}
.cat img, .cat svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  pointer-events: none;
}
.cat.from-left { margin-left: -16px; }
.cat.from-right { margin-left: -142px; }
.cat.show { animation: cat-in 0.7s ease forwards; }
.cat.hide { animation: cat-out 0.45s ease forwards; pointer-events: none; }
.cat.flip { transform: scaleX(-1); }
.cat.flee {
  filter: drop-shadow(0 0 16px rgba(192, 132, 252, 0.7)) drop-shadow(0 0 8px rgba(122, 240, 255, 0.45));
}
.cat.shake .cat-inner { animation: shake 0.38s ease; }

.cat-inner { display: block; width: 100%; height: 100%; transform-origin: 50% 70%; }

@keyframes cat-in {
  from { opacity: 0; filter: blur(6px) drop-shadow(0 0 10px rgba(122, 240, 255, 0.35)); }
  to { opacity: 1; filter: blur(0) drop-shadow(0 0 10px rgba(122, 240, 255, 0.35)); }
}
@keyframes cat-out {
  to { opacity: 0; filter: blur(8px); }
}
@keyframes shake {
  0%, 100% { transform: translate(0, 0) rotate(0); }
  20% { transform: translate(-5px, -2px) rotate(-6deg); }
  45% { transform: translate(6px, 1px) rotate(5deg); }
  70% { transform: translate(-3px, 2px) rotate(-3deg); }
}

main {
  position: relative;
  z-index: 2;
  max-width: 980px;
  margin: 0 auto;
  padding: 72px 20px 80px;
}

header { text-align: center; margin-bottom: 40px; }
.kicker {
  letter-spacing: 0.28em;
  font-size: 12px;
  color: var(--cyan);
  margin: 0 0 10px;
}
h1 {
  font-size: clamp(36px, 6vw, 64px);
  margin: 0 0 10px;
  font-weight: 700;
  text-shadow: 0 0 24px rgba(122, 240, 255, 0.25);
}
.lead { color: var(--muted); margin: 0; font-size: 15px; }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: inherit;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: transform 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: rgba(122, 240, 255, 0.55);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35), 0 0 24px rgba(122, 240, 255, 0.12);
}
.thumb {
  height: 132px;
  position: relative;
  background: linear-gradient(160deg, #101820, #0b1016 60%);
  overflow: hidden;
}
.meta { padding: 16px 16px 18px; }
.meta h2 { margin: 0 0 6px; font-size: 18px; }
.meta p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }

.polis .tile {
  position: absolute;
  width: 28px;
  height: 28px;
  border: 1px solid rgba(122, 240, 255, 0.4);
  background: rgba(122, 240, 255, 0.08);
  transform: rotate(18deg);
}
.t1 { left: 28px; top: 54px; }
.t2 { left: 58px; top: 42px; background: rgba(192, 132, 252, 0.16); }
.t3 { left: 88px; top: 62px; }
.keep {
  position: absolute;
  right: 28px;
  top: 36px;
  width: 46px;
  height: 34px;
  border: 1px solid var(--cyan);
  border-radius: 4px 4px 0 0;
  box-shadow: 0 10px 0 rgba(122, 240, 255, 0.2);
}

.dl .box {
  position: absolute;
  left: 50%;
  top: 38px;
  width: 54px;
  height: 40px;
  margin-left: -27px;
  border: 1px solid var(--cyan);
  border-radius: 4px;
}
.dl .arrow {
  position: absolute;
  left: 50%;
  top: 28px;
  width: 10px;
  height: 34px;
  margin-left: -5px;
  background: var(--cyan);
  clip-path: polygon(0 0, 100% 0, 100% 58%, 170% 58%, 50% 100%, -70% 58%, 0 58%);
}

.panel .bar {
  position: absolute;
  left: 36px;
  height: 10px;
  border-radius: 99px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
}
.b1 { top: 40px; width: 58%; opacity: 0.9; }
.b2 { top: 60px; width: 40%; opacity: 0.55; }
.b3 { top: 80px; width: 72%; opacity: 0.35; }

@media (max-width: 800px) {
  .cards { grid-template-columns: 1fr; }
  main { padding-top: 48px; }
}