.content-title {
  font-size: 80px;
  font-weight: 900;
  color: #000000;
  text-shadow:
    0 0 5px #fff,
    0 0 10px #fff,
    0 0 20px #ff00de,
    0 0 40px #ff00de,
    0 0 80px #ff00de;
  animation:
    blink-color 0.7s ease-in-out infinite,
    scale-pulse 0.7s ease-in-out infinite;
}

.content {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  width: 100%;
}
.icp {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
}

@keyframes blink-color {
  0% {
    filter: hue-rotate(0deg);
  }
  50% {
    filter: hue-rotate(180deg);
  }
  100% {
    filter: hue-rotate(360deg);
  }
}

@keyframes scale-pulse {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.3);
  }
}
.tuwei-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background: #000;
  overflow: hidden;
}

/* 1. 超快闪烁光斑 ×5 */
.tuwei-bg .flash-blob {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  animation: flash-pulse 0.8s ease-in-out infinite alternate;
}
.tuwei-bg .flash-blob:nth-child(1) {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #ff00ff, transparent 70%);
  top: -5%;
  left: -5%;
  animation-duration: 0.6s;
}
.tuwei-bg .flash-blob:nth-child(2) {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #00ffff, transparent 70%);
  top: 20%;
  right: -5%;
  animation-duration: 0.5s;
  animation-delay: -0.2s;
}
.tuwei-bg .flash-blob:nth-child(3) {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #ffff00, transparent 70%);
  bottom: -10%;
  left: 20%;
  animation-duration: 0.7s;
  animation-delay: -0.4s;
}
.tuwei-bg .flash-blob:nth-child(4) {
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, #ff0000, transparent 70%);
  top: 50%;
  left: 50%;
  animation-duration: 0.4s;
  animation-delay: -0.1s;
}
.tuwei-bg .flash-blob:nth-child(5) {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #00ff00, transparent 70%);
  bottom: 10%;
  right: 10%;
  animation-duration: 0.55s;
  animation-delay: -0.3s;
}
@keyframes flash-pulse {
  0% {
    opacity: 0.2;
    transform: scale(0.8);
  }
  50% {
    opacity: 0.9;
    transform: scale(1.3);
  }
  100% {
    opacity: 0.3;
    transform: scale(1.1);
  }
}

/* 2. 彩虹扫描线 ×7 */
.tuwei-bg .rainbow-line {
  position: absolute;
  height: 3px;
  left: 0;
  right: 0;
  background: linear-gradient(
    90deg,
    #ff0000,
    #ff7f00,
    #ffff00,
    #00ff00,
    #0000ff,
    #4b0082,
    #9400d3,
    #ff0000
  );
  background-size: 200% 100%;
  filter: blur(1px) brightness(1.5);
  opacity: 0;
  animation: rainbow-scan 1.5s linear infinite;
}
.tuwei-bg .rainbow-line:nth-child(6) {
  top: 10%;
  animation-delay: 0s;
}
.tuwei-bg .rainbow-line:nth-child(7) {
  top: 25%;
  animation-delay: -0.3s;
  animation-duration: 1.2s;
}
.tuwei-bg .rainbow-line:nth-child(8) {
  top: 40%;
  animation-delay: -0.6s;
  animation-duration: 1.8s;
}
.tuwei-bg .rainbow-line:nth-child(9) {
  top: 55%;
  animation-delay: -0.9s;
  animation-duration: 1.4s;
}
.tuwei-bg .rainbow-line:nth-child(10) {
  top: 70%;
  animation-delay: -1.2s;
  animation-duration: 1.6s;
}
.tuwei-bg .rainbow-line:nth-child(11) {
  top: 85%;
  animation-delay: -0.4s;
  animation-duration: 1.3s;
}
.tuwei-bg .rainbow-line:nth-child(12) {
  top: 95%;
  animation-delay: -0.7s;
  animation-duration: 1.1s;
}
@keyframes rainbow-scan {
  0% {
    transform: translateX(-100%);
    opacity: 0;
  }
  15% {
    opacity: 1;
  }
  85% {
    opacity: 1;
  }
  100% {
    transform: translateX(100%);
    opacity: 0;
  }
}

/* 3. 疯狂闪烁网格 */
.tuwei-bg .crazy-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 0, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 255, 0.08) 1px, transparent 1px);
  background-size: 40px 40px;
  animation: grid-crazy 0.3s steps(1) infinite;
}
@keyframes grid-crazy {
  0% {
    opacity: 0.1;
    background-size: 40px 40px;
  }
  25% {
    opacity: 0.8;
    background-size: 45px 35px;
  }
  50% {
    opacity: 0.2;
    background-size: 35px 45px;
  }
  75% {
    opacity: 1;
    background-size: 40px 40px;
  }
  100% {
    opacity: 0.3;
    background-size: 50px 30px;
  }
}

/* 4. 密集闪烁粒子 ×20 */
.tuwei-bg .star {
  position: absolute;
  border-radius: 50%;
  animation: star-blink 0.5s ease-in-out infinite;
}
.tuwei-bg .star:nth-child(13) {
  width: 6px;
  height: 6px;
  top: 5%;
  left: 10%;
  background: #ff00ff;
  box-shadow: 0 0 15px #ff00ff;
  animation-delay: 0s;
  animation-duration: 0.4s;
}
.tuwei-bg .star:nth-child(14) {
  width: 4px;
  height: 4px;
  top: 15%;
  left: 80%;
  background: #00ffff;
  box-shadow: 0 0 12px #00ffff;
  animation-delay: -0.1s;
  animation-duration: 0.6s;
}
.tuwei-bg .star:nth-child(15) {
  width: 8px;
  height: 8px;
  top: 25%;
  left: 30%;
  background: #ffff00;
  box-shadow: 0 0 20px #ffff00;
  animation-delay: -0.2s;
  animation-duration: 0.35s;
}
.tuwei-bg .star:nth-child(16) {
  width: 5px;
  height: 5px;
  top: 35%;
  left: 70%;
  background: #ff0000;
  box-shadow: 0 0 15px #ff0000;
  animation-delay: -0.05s;
  animation-duration: 0.5s;
}
.tuwei-bg .star:nth-child(17) {
  width: 7px;
  height: 7px;
  top: 45%;
  left: 15%;
  background: #00ff00;
  box-shadow: 0 0 18px #00ff00;
  animation-delay: -0.15s;
  animation-duration: 0.45s;
}
.tuwei-bg .star:nth-child(18) {
  width: 4px;
  height: 4px;
  top: 55%;
  left: 90%;
  background: #ff7f00;
  box-shadow: 0 0 12px #ff7f00;
  animation-delay: -0.25s;
  animation-duration: 0.55s;
}
.tuwei-bg .star:nth-child(19) {
  width: 6px;
  height: 6px;
  top: 65%;
  left: 40%;
  background: #ff00ff;
  box-shadow: 0 0 15px #ff00ff;
  animation-delay: -0.3s;
  animation-duration: 0.4s;
}
.tuwei-bg .star:nth-child(20) {
  width: 5px;
  height: 5px;
  top: 75%;
  left: 60%;
  background: #00ffff;
  box-shadow: 0 0 14px #00ffff;
  animation-delay: -0.08s;
  animation-duration: 0.48s;
}
.tuwei-bg .star:nth-child(21) {
  width: 8px;
  height: 8px;
  top: 85%;
  left: 20%;
  background: #ffff00;
  box-shadow: 0 0 22px #ffff00;
  animation-delay: -0.18s;
  animation-duration: 0.38s;
}
.tuwei-bg .star:nth-child(22) {
  width: 4px;
  height: 4px;
  top: 90%;
  left: 85%;
  background: #ff0000;
  box-shadow: 0 0 12px #ff0000;
  animation-delay: -0.22s;
  animation-duration: 0.52s;
}
.tuwei-bg .star:nth-child(23) {
  width: 6px;
  height: 6px;
  top: 8%;
  left: 50%;
  background: #00ff00;
  box-shadow: 0 0 16px #00ff00;
  animation-delay: -0.12s;
  animation-duration: 0.42s;
}
.tuwei-bg .star:nth-child(24) {
  width: 5px;
  height: 5px;
  top: 50%;
  left: 5%;
  background: #ff7f00;
  box-shadow: 0 0 14px #ff7f00;
  animation-delay: -0.28s;
  animation-duration: 0.58s;
}
.tuwei-bg .star:nth-child(25) {
  width: 7px;
  height: 7px;
  top: 30%;
  left: 95%;
  background: #ff00ff;
  box-shadow: 0 0 18px #ff00ff;
  animation-delay: -0.35s;
  animation-duration: 0.36s;
}
.tuwei-bg .star:nth-child(26) {
  width: 4px;
  height: 4px;
  top: 60%;
  left: 55%;
  background: #00ffff;
  box-shadow: 0 0 12px #00ffff;
  animation-delay: -0.4s;
  animation-duration: 0.44s;
}
.tuwei-bg .star:nth-child(27) {
  width: 6px;
  height: 6px;
  top: 20%;
  left: 45%;
  background: #ffff00;
  box-shadow: 0 0 16px #ffff00;
  animation-delay: -0.16s;
  animation-duration: 0.5s;
}
.tuwei-bg .star:nth-child(28) {
  width: 5px;
  height: 5px;
  top: 80%;
  left: 75%;
  background: #ff0000;
  box-shadow: 0 0 14px #ff0000;
  animation-delay: -0.32s;
  animation-duration: 0.46s;
}
.tuwei-bg .star:nth-child(29) {
  width: 8px;
  height: 8px;
  top: 40%;
  left: 25%;
  background: #00ff00;
  box-shadow: 0 0 20px #00ff00;
  animation-delay: -0.24s;
  animation-duration: 0.34s;
}
.tuwei-bg .star:nth-child(30) {
  width: 4px;
  height: 4px;
  top: 70%;
  left: 35%;
  background: #ff7f00;
  box-shadow: 0 0 12px #ff7f00;
  animation-delay: -0.38s;
  animation-duration: 0.56s;
}
.tuwei-bg .star:nth-child(31) {
  width: 6px;
  height: 6px;
  top: 12%;
  left: 65%;
  background: #ff00ff;
  box-shadow: 0 0 16px #ff00ff;
  animation-delay: -0.44s;
  animation-duration: 0.4s;
}
.tuwei-bg .star:nth-child(32) {
  width: 5px;
  height: 5px;
  top: 88%;
  left: 48%;
  background: #00ffff;
  box-shadow: 0 0 14px #00ffff;
  animation-delay: -0.2s;
  animation-duration: 0.48s;
}
@keyframes star-blink {
  0%,
  100% {
    opacity: 0.1;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.8);
  }
}

/* 5. 旋转彩虹光环 */
.tuwei-bg .spin-ring {
  position: absolute;
  width: 500px;
  height: 500px;
  border: 3px solid transparent;
  border-top-color: #ff00ff;
  border-right-color: #00ffff;
  border-radius: 50%;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: spin-fast 2s linear infinite;
  filter: drop-shadow(0 0 10px #ff00ff);
}
.tuwei-bg .spin-ring::before {
  content: "";
  position: absolute;
  inset: -20px;
  border: 2px solid transparent;
  border-bottom-color: #ffff00;
  border-left-color: #ff0000;
  border-radius: 50%;
  animation: spin-fast 1.5s linear infinite reverse;
  filter: drop-shadow(0 0 8px #ffff00);
}
.tuwei-bg .spin-ring::after {
  content: "";
  position: absolute;
  inset: 20px;
  border: 2px solid transparent;
  border-top-color: #00ff00;
  border-bottom-color: #ff7f00;
  border-radius: 50%;
  animation: spin-fast 3s linear infinite;
  filter: drop-shadow(0 0 6px #00ff00);
}
@keyframes spin-fast {
  0% {
    transform: translate(-50%, -50%) rotate(0deg);
  }
  100% {
    transform: translate(-50%, -50%) rotate(360deg);
  }
}

/* 6. 四角爆闪 */
.tuwei-bg .flash-corner {
  position: absolute;
  width: 100px;
  height: 100px;
  z-index: 1;
  animation: corner-flash 0.4s steps(1) infinite;
}
.tuwei-bg .flash-corner.tl {
  top: 20px;
  left: 20px;
  border-top: 4px solid #ff00ff;
  border-left: 4px solid #ff00ff;
  box-shadow: -5px -5px 20px #ff00ff;
  animation-delay: 0s;
}
.tuwei-bg .flash-corner.tr {
  top: 20px;
  right: 20px;
  border-top: 4px solid #00ffff;
  border-right: 4px solid #00ffff;
  box-shadow: 5px -5px 20px #00ffff;
  animation-delay: -0.1s;
}
.tuwei-bg .flash-corner.bl {
  bottom: 20px;
  left: 20px;
  border-bottom: 4px solid #ffff00;
  border-left: 4px solid #ffff00;
  box-shadow: -5px 5px 20px #ffff00;
  animation-delay: -0.2s;
}
.tuwei-bg .flash-corner.br {
  bottom: 20px;
  right: 20px;
  border-bottom: 4px solid #ff0000;
  border-right: 4px solid #ff0000;
  box-shadow: 5px 5px 20px #ff0000;
  animation-delay: -0.3s;
}
@keyframes corner-flash {
  0%,
  100% {
    opacity: 0.3;
    filter: brightness(0.5);
  }
  50% {
    opacity: 1;
    filter: brightness(2);
  }
}

/* 7. 对角线闪光条 */
.tuwei-bg .diagonal-flash {
  position: absolute;
  width: 200%;
  height: 4px;
  background: linear-gradient(
    90deg,
    transparent,
    #ff00ff,
    #00ffff,
    #ffff00,
    transparent
  );
  filter: blur(2px) brightness(2);
  opacity: 0;
  animation: diagonal-sweep 2s ease-in-out infinite;
}
.tuwei-bg .diagonal-flash:nth-child(37) {
  top: 30%;
  left: -50%;
  transform: rotate(25deg);
  animation-delay: 0s;
  animation-duration: 1.5s;
}
.tuwei-bg .diagonal-flash:nth-child(38) {
  top: 60%;
  left: -50%;
  transform: rotate(-25deg);
  animation-delay: -0.7s;
  animation-duration: 1.8s;
}
.tuwei-bg .diagonal-flash:nth-child(39) {
  top: 45%;
  left: -50%;
  transform: rotate(15deg);
  animation-delay: -1.2s;
  animation-duration: 2s;
}
@keyframes diagonal-sweep {
  0% {
    transform: translateX(-100%) rotate(var(--rot, 0deg));
    opacity: 0;
  }
  20% {
    opacity: 1;
  }
  80% {
    opacity: 1;
  }
  100% {
    transform: translateX(100%) rotate(var(--rot, 0deg));
    opacity: 0;
  }
}

/* 8. 底部彩虹条 */
.tuwei-bg .rainbow-bar {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 6px;
  background: linear-gradient(
    90deg,
    #ff0000,
    #ff7f00,
    #ffff00,
    #00ff00,
    #0000ff,
    #4b0082,
    #9400d3,
    #ff0000
  );
  background-size: 200% 100%;
  animation: rainbow-flow 1s linear infinite;
  filter: brightness(2) blur(1px);
}
@keyframes rainbow-flow {
  0% {
    background-position: 0% 0%;
  }
  100% {
    background-position: 200% 0%;
  }
}

/* 9. 顶部频闪灯 */
.tuwei-bg .strobe-light {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100vh;
  background: radial-gradient(
    ellipse at 50% 0%,
    rgba(255, 0, 255, 0.15) 0%,
    transparent 60%
  );
  animation: strobe 0.2s steps(1) infinite;
  pointer-events: none;
}
@keyframes strobe {
  0%,
  100% {
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
}

/* 10. 十字闪光 ×8 */
.tuwei-bg .cross-flash {
  position: absolute;
  width: 30px;
  height: 30px;
  animation: cross-blink 0.6s ease-in-out infinite;
}
.tuwei-bg .cross-flash::before,
.tuwei-bg .cross-flash::after {
  content: "";
  position: absolute;
  background: #fff;
  box-shadow: 0 0 10px currentColor;
}
.tuwei-bg .cross-flash::before {
  width: 100%;
  height: 3px;
  top: 50%;
  left: 0;
  transform: translateY(-50%);
}
.tuwei-bg .cross-flash::after {
  width: 3px;
  height: 100%;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
}
.tuwei-bg .cross-flash:nth-child(41) {
  top: 10%;
  left: 25%;
  color: #ff00ff;
  animation-delay: 0s;
}
.tuwei-bg .cross-flash:nth-child(42) {
  top: 30%;
  left: 75%;
  color: #00ffff;
  animation-delay: -0.2s;
}
.tuwei-bg .cross-flash:nth-child(43) {
  top: 50%;
  left: 40%;
  color: #ffff00;
  animation-delay: -0.4s;
}
.tuwei-bg .cross-flash:nth-child(44) {
  top: 70%;
  left: 60%;
  color: #ff0000;
  animation-delay: -0.1s;
}
.tuwei-bg .cross-flash:nth-child(45) {
  top: 85%;
  left: 15%;
  color: #00ff00;
  animation-delay: -0.3s;
}
.tuwei-bg .cross-flash:nth-child(46) {
  top: 20%;
  left: 55%;
  color: #ff7f00;
  animation-delay: -0.5s;
}
.tuwei-bg .cross-flash:nth-child(47) {
  top: 60%;
  left: 85%;
  color: #ff00ff;
  animation-delay: -0.15s;
}
.tuwei-bg .cross-flash:nth-child(48) {
  top: 40%;
  left: 10%;
  color: #00ffff;
  animation-delay: -0.35s;
}
@keyframes cross-blink {
  0%,
  100% {
    opacity: 0;
    transform: scale(0.5) rotate(0deg);
  }
  50% {
    opacity: 1;
    transform: scale(1.5) rotate(45deg);
  }
}

/* 11. 噪点闪烁 */
.tuwei-bg .noise-overlay {
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.15'/%3E%3C/svg%3E");
  opacity: 0.3;
  animation: noise-flicker 0.1s steps(2) infinite;
  pointer-events: none;
  mix-blend-mode: overlay;
}
@keyframes noise-flicker {
  0% {
    opacity: 0.1;
  }
  50% {
    opacity: 0.4;
  }
  100% {
    opacity: 0.15;
  }
}
.dvd-bounce {
  position: fixed;
  padding: 10px 20px;
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 2px;
  white-space: nowrap;
  pointer-events: none;
  user-select: none;
  z-index: 9999;
  border-radius: 8px;
  transition:
    color 0.15s,
    text-shadow 0.15s,
    box-shadow 0.15s;
}
h2 {
  font-size: 60px;
  font-weight: 900;
  display: inline-block; /* 旋转需要块级或行内块 */
}

/* 1. 渐变 */
h2.gradient {
  background: linear-gradient(135deg, #ff6b6b, #4ecdc4, #45b7d1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* 2. 霓虹 */
h2.neon {
  color: #fff;
  text-shadow:
    0 0 5px #fff,
    0 0 10px #fff,
    0 0 20px #ff00de,
    0 0 40px #ff00de,
    0 0 80px #ff00de;
}

/* 3. 描边 */
h2.stroke {
  -webkit-text-stroke: 3px #ff4757;
  color: transparent;
  text-shadow: 4px 4px 0px #2f3542;
}

/* 4. 3D 立体 */
h2.d3 {
  color: #fff;
  text-shadow:
    1px 1px 0 #ccc,
    2px 2px 0 #c9c9c9,
    3px 3px 0 #bbb,
    4px 4px 0 #b9b9b9,
    5px 5px 0 #aaa,
    6px 6px 1px rgba(0, 0, 0, 0.1),
    0 0 5px rgba(0, 0, 0, 0.1),
    1px 1px 3px rgba(0, 0, 0, 0.3),
    3px 3px 5px rgba(0, 0, 0, 0.2),
    5px 5px 10px rgba(0, 0, 0, 0.25);
}

/* 5. 金属 */
h2.metal {
  background: linear-gradient(
    to bottom,
    #cfcfcf 0%,
    #ffffff 20%,
    #a0a0a0 40%,
    #cfcfcf 60%,
    #ffffff 80%,
    #a0a0a0 100%
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

/* 6. 图片填充 */
h2.clip {
  background: url("https://images.unsplash.com/photo-1501854140884-074bf6b24363?w=800")
    center/cover;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* ========== 旋转动画 ========== */

/* 持续顺时针旋转（像唱片） */
h2.rotate-cw {
  animation: spin-cw 4s linear infinite;
  transform-origin: center center;
}

/* 持续逆时针旋转 */
h2.rotate-ccw {
  animation: spin-ccw 4s linear infinite;
  transform-origin: center center;
}

/* 顺时针摇摆（左右摆动） */
h2.swing-cw {
  animation: swing 3s ease-in-out infinite;
  transform-origin: center center;
}

/* 逆时针摇摆 */
h2.swing-ccw {
  animation: swing-reverse 3s ease-in-out infinite;
  transform-origin: center center;
}

/* 3D 翻转旋转（立体翻转效果） */
h2.flip-rotate {
  animation: flip-spin 5s linear infinite;
  transform-origin: center center;
}

/* 关键帧 */
@keyframes spin-cw {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes spin-ccw {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(-360deg);
  }
}

@keyframes swing {
  0%,
  100% {
    transform: rotate(-15deg);
  }
  50% {
    transform: rotate(15deg);
  }
}

@keyframes swing-reverse {
  0%,
  100% {
    transform: rotate(15deg);
  }
  50% {
    transform: rotate(-15deg);
  }
}

@keyframes flip-spin {
  0% {
    transform: rotateY(0deg) rotate(0deg);
  }
  50% {
    transform: rotateY(180deg) rotate(180deg);
  }
  100% {
    transform: rotateY(360deg) rotate(360deg);
  }
}