body {
    margin: 0;
    background: #fff;
    font-family: "Noto Serif SC", serif;
    overflow: hidden;
    position: relative;
  }

  /* Rain animation container */
  .rain-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 1000;
    overflow: hidden;
  }

  /* Rain lines */
  .rain-line {
    position: absolute;
    height: 2px;
    background: repeating-linear-gradient(
      45deg,
      transparent,
      transparent 3px,
      rgba(0, 0, 0, 0.2) 3px,
      rgba(0, 0, 0, 0.2) 6px
    );
    transform: rotate(45deg);
    /* animation: rain-fall 30s linear infinite; */
    opacity: 0; /* Hide rain lines */
  }

  /* Rain lines positioned from top-left to bottom-right with varying lengths */
  .rain-line:nth-child(1) {
    left: 10%;
    top: 0;
    width: 80px;
    animation-duration: 8s;
    animation-delay: 0s;
  }

  .rain-line:nth-child(2) {
    left: 20%;
    top: 0;
    width: 120px;
    animation-duration: 7s;
    animation-delay: 1s;
  }

  .rain-line:nth-child(3) {
    left: 30%;
    top: 0;
    width: 60px;
    animation-duration: 9s;
    animation-delay: 2s;
  }

  .rain-line:nth-child(4) {
    left: 40%;
    top: 0;
    width: 100px;
    animation-duration: 6s;
    animation-delay: 0.5s;
  }

  .rain-line:nth-child(5) {
    left: 50%;
    top: 0;
    width: 140px;
    animation-duration: 8.5s;
    animation-delay: 1.5s;
  }

  .rain-line:nth-child(6) {
    left: 60%;
    top: 0;
    width: 90px;
    animation-duration: 7.5s;
    animation-delay: 2.5s;
  }

  .rain-line:nth-child(7) {
    left: 70%;
    top: 0;
    width: 110px;
    animation-duration: 9.5s;
    animation-delay: 3s;
  }

  .rain-line:nth-child(8) {
    left: 80%;
    top: 0;
    width: 70px;
    animation-duration: 6.5s;
    animation-delay: 0.8s;
  }

  .rain-line:nth-child(9) {
    left: 90%;
    top: 0;
    width: 130px;
    animation-duration: 8.2s;
    animation-delay: 1.8s;
  }

  .rain-line:nth-child(10) {
    left: 15%;
    top: 0;
    width: 95px;
    animation-duration: 7.8s;
    animation-delay: 2.2s;
  }

  .rain-line:nth-child(11) {
    left: 25%;
    top: 0;
    width: 75px;
    animation-duration: 9.2s;
    animation-delay: 0.3s;
  }

  .rain-line:nth-child(12) {
    left: 35%;
    top: 0;
    width: 115px;
    animation-duration: 6.8s;
    animation-delay: 1.2s;
  }

  .rain-line:nth-child(13) {
    left: 45%;
    top: 0;
    width: 85px;
    animation-duration: 7.2s;
    animation-delay: 0.7s;
  }

  .rain-line:nth-child(14) {
    left: 55%;
    top: 0;
    width: 125px;
    animation-duration: 8.8s;
    animation-delay: 1.9s;
  }

  .rain-line:nth-child(15) {
    left: 65%;
    top: 0;
    width: 65px;
    animation-duration: 6.3s;
    animation-delay: 0.4s;
  }

  .rain-line:nth-child(16) {
    left: 75%;
    top: 0;
    width: 105px;
    animation-duration: 9.1s;
    animation-delay: 2.1s;
  }

  .rain-line:nth-child(17) {
    left: 85%;
    top: 0;
    width: 135px;
    animation-duration: 7.7s;
    animation-delay: 1.3s;
  }

  .rain-line:nth-child(18) {
    left: 95%;
    top: 0;
    width: 55px;
    animation-duration: 8.3s;
    animation-delay: 0.9s;
  }

  .rain-line:nth-child(19) {
    left: 5%;
    top: 0;
    width: 145px;
    animation-duration: 6.9s;
    animation-delay: 2.3s;
  }

  .rain-line:nth-child(20) {
    left: 12%;
    top: 0;
    width: 88px;
    animation-duration: 8.6s;
    animation-delay: 1.6s;
  }

  .rain-line:nth-child(21) {
    left: 22%;
    top: 0;
    width: 112px;
    animation-duration: 7.4s;
    animation-delay: 0.6s;
  }

  .rain-line:nth-child(22) {
    left: 32%;
    top: 0;
    width: 78px;
    animation-duration: 9.3s;
    animation-delay: 1.8s;
  }

  .rain-line:nth-child(23) {
    left: 42%;
    top: 0;
    width: 128px;
    animation-duration: 6.7s;
    animation-delay: 2.4s;
  }

  .rain-line:nth-child(24) {
    left: 52%;
    top: 0;
    width: 92px;
    animation-duration: 8.1s;
    animation-delay: 0.8s;
  }

  .rain-line:nth-child(25) {
    left: 62%;
    top: 0;
    width: 108px;
    animation-duration: 7.9s;
    animation-delay: 1.4s;
  }

  .rain-line:nth-child(26) {
    left: 72%;
    top: 0;
    width: 82px;
    animation-duration: 15s;
    animation-delay: 2.0s;
  }

  /* Wave clusters positioned around characters */
 
  /* Top left */
  .wave-cluster.top-left {
    top: 5%;
    left: 9%;
    font-size: 1.3vw;
  }

  .wave-cluster.wind-area {
    top: 9%;
    left: 14%;
    font-size: 1.4vw;
  }

  .wave-cluster.wind-area-between {
    top: 13%;
    left: 19%;
    font-size: 1.6vw;
  }

  /* Upper right sea */
  .wave-cluster.sea-area-up {
    top: 9%;
    left: 72%;
    font-size: 1.6vw;
  }

  .wave-cluster.sea-area {
    top: 13%;
    left: 84%;
    font-size: 1.6vw;
  }

  /* Middle left poetry */
  .wave-cluster.poetry-area {
    top: 46%;
    left: 5%;
    font-size: 1.2vw;
  }

  .wave-cluster.poetry-area-lower {
    top: 50%;
    left: 5%;
    font-size: 1.2vw;
  }

  /* Rain */
  .wave-cluster.rain-area-up {
    top: 78%;
    left: 40%;
    font-size: 1.3vw;
  }

  .wave-cluster.rain-area-middle {
    top: 82%;
    left: 35%;
    font-size: 1.3vw;
  }

  .wave-cluster.rain-area-down {
    top: 86%;
    left: 30%;
    font-size: 1.3vw;
  }

  /* Heart */
  .wave-cluster.heart-area-up {
    top: 50%;
    left: 65%;
    font-size: 1.4vw;
  }

  .wave-cluster.heart-area-middle {
    top: 54%;
    left: 65%;
    font-size: 1.4vw;
  }
  .wave-cluster.heart-area-lower {
    top: 58%;
    left: 67%;
    font-size: 1.4vw;
  }

  /* Rain fall animation */
  @keyframes rain-fall {
    0% {
      transform: rotate(45deg) translateY(-50px) translateX(-50px);
      opacity: 0;
    }
    5% {
      opacity: 1;
    }
    60% {
      opacity: 1;
    }
    80% {
      opacity: 0.3;
    }
    100% {
      transform: rotate(45deg) translateY(100vh) translateX(100vh);
      opacity: 0;
    }
  }

  /* Wave glyph cluster effect */
  .wave-cluster {
    position: absolute;
    font-family: "PingFang SC", "PingFang", sans-serif;
    font-weight: 100;
    color: #000000;
    opacity: 0.8; /* Show waves immediately */
    pointer-events: none;
    z-index: 500;
  }

  .wave-glyph {
    display: inline-block;
    font-size: 1.5vw;
  }

  /* Different animation patterns for each wave cluster */
  .wave-cluster.top-left {
    animation: wave-float-left 12s ease-in-out infinite;
  }

  .wave-cluster.top-left .wave-glyph:nth-child(1) {
    animation: wave-float-up 8s ease-in-out infinite;
  }

  .wave-cluster.top-left .wave-glyph:nth-child(2) {
    animation: wave-float-right 10s ease-in-out infinite;
  }

  .wave-cluster.top-left .wave-glyph:nth-child(3) {
    animation: wave-float-down 9s ease-in-out infinite;
  }

  .wave-cluster.wind-area {
    animation: wave-float-right 15s ease-in-out infinite;
  }

  .wave-cluster.wind-area .wave-glyph:nth-child(1) {
    animation: wave-float-up 11s ease-in-out infinite;
  }

  .wave-cluster.wind-area .wave-glyph:nth-child(2) {
    animation: wave-float-left 13s ease-in-out infinite;
  }

  .wave-cluster.wind-area-between {
    animation: wave-float-up 14s ease-in-out infinite;
  }

  .wave-cluster.wind-area-between .wave-glyph:nth-child(1) {
    animation: wave-float-right 12s ease-in-out infinite;
  }

  .wave-cluster.wind-area-between .wave-glyph:nth-child(2) {
    animation: wave-float-down 10s ease-in-out infinite;
  }

  .wave-cluster.sea-area-up {
    animation: wave-float-right 16s ease-in-out infinite;
  }

  .wave-cluster.sea-area-up .wave-glyph {
    animation: wave-float-up 13s ease-in-out infinite;
  }

  .wave-cluster.sea-area {
    animation: wave-float-left 18s ease-in-out infinite;
  }

  .wave-cluster.sea-area .wave-glyph:nth-child(1) {
    animation: wave-float-up 9s ease-in-out infinite;
  }

  .wave-cluster.sea-area .wave-glyph:nth-child(2) {
    animation: wave-float-right 11s ease-in-out infinite;
  }

  .wave-cluster.sea-area .wave-glyph:nth-child(3) {
    animation: wave-float-down 14s ease-in-out infinite;
  }

  .wave-cluster.sea-area .wave-glyph:nth-child(4) {
    animation: wave-float-left 12s ease-in-out infinite;
  }

  .wave-cluster.sea-area .wave-glyph:nth-child(5) {
    animation: wave-float-up 10s ease-in-out infinite;
  }

  .wave-cluster.poetry-area {
    animation: wave-float-down 13s ease-in-out infinite;
  }

  .wave-cluster.poetry-area .wave-glyph:nth-child(1) {
    animation: wave-float-left 8s ease-in-out infinite;
  }

  .wave-cluster.poetry-area .wave-glyph:nth-child(2) {
    animation: wave-float-right 12s ease-in-out infinite;
  }

  .wave-cluster.poetry-area .wave-glyph:nth-child(3) {
    animation: wave-float-up 10s ease-in-out infinite;
  }

  .wave-cluster.poetry-area-lower {
    animation: wave-float-left 11s ease-in-out infinite;
  }

  .wave-cluster.poetry-area-lower .wave-glyph:nth-child(1) {
    animation: wave-float-up 9s ease-in-out infinite;
  }

  .wave-cluster.poetry-area-lower .wave-glyph:nth-child(2) {
    animation: wave-float-right 13s ease-in-out infinite;
  }

  .wave-cluster.rain-area-up {
    animation: wave-float-down 14s ease-in-out infinite;
  }

  .wave-cluster.rain-area-up .wave-glyph:nth-child(1) {
    animation: wave-float-left 10s ease-in-out infinite;
  }

  .wave-cluster.rain-area-up .wave-glyph:nth-child(2) {
    animation: wave-float-right 12s ease-in-out infinite;
  }

  .wave-cluster.rain-area-up .wave-glyph:nth-child(3) {
    animation: wave-float-up 11s ease-in-out infinite;
  }

  .wave-cluster.rain-area-middle {
    animation: wave-float-right 15s ease-in-out infinite;
  }

  .wave-cluster.rain-area-middle .wave-glyph:nth-child(1) {
    animation: wave-float-up 9s ease-in-out infinite;
  }

  .wave-cluster.rain-area-middle .wave-glyph:nth-child(2) {
    animation: wave-float-left 13s ease-in-out infinite;
  }

  .wave-cluster.rain-area-down {
    animation: wave-float-left 12s ease-in-out infinite;
  }

  .wave-cluster.rain-area-down .wave-glyph:nth-child(1) {
    animation: wave-float-up 11s ease-in-out infinite;
  }

  .wave-cluster.rain-area-down .wave-glyph:nth-child(2) {
    animation: wave-float-right 8s ease-in-out infinite;
  }

  .wave-cluster.rain-area-down .wave-glyph:nth-child(3) {
    animation: wave-float-down 14s ease-in-out infinite;
  }

  .wave-cluster.heart-area-up {
    animation: wave-float-up 16s ease-in-out infinite;
  }

  .wave-cluster.heart-area-up .wave-glyph:nth-child(1) {
    animation: wave-float-left 12s ease-in-out infinite;
  }

  .wave-cluster.heart-area-up .wave-glyph:nth-child(2) {
    animation: wave-float-right 10s ease-in-out infinite;
  }

  .wave-cluster.heart-area-middle {
    animation: wave-float-right 13s ease-in-out infinite;
  }

  .wave-cluster.heart-area-middle .wave-glyph:nth-child(1) {
    animation: wave-float-up 9s ease-in-out infinite;
  }

  .wave-cluster.heart-area-middle .wave-glyph:nth-child(2) {
    animation: wave-float-left 11s ease-in-out infinite;
  }

  .wave-cluster.heart-area-middle .wave-glyph:nth-child(3) {
    animation: wave-float-down 14s ease-in-out infinite;
  }

  .wave-cluster.heart-area-lower {
    animation: wave-float-left 15s ease-in-out infinite;
  }

  .wave-cluster.heart-area-lower .wave-glyph:nth-child(1) {
    animation: wave-float-up 12s ease-in-out infinite;
  }

  .wave-cluster.heart-area-lower .wave-glyph:nth-child(2) {
    animation: wave-float-right 10s ease-in-out infinite;
  }

  .wave-cluster.heart-area-lower .wave-glyph:nth-child(3) {
    animation: wave-float-down 13s ease-in-out infinite;
  }

  /* Wave appear animation */
  @keyframes wave-appear {
    0%, 5% {
      opacity: 0;
    }
    10%, 80% {
      opacity: 0.8;
    }
    85%, 100% {
      opacity: 0;
    }
  }

  /* Enhanced wave floating animations with different directions */
  @keyframes wave-float {
    0%, 100% {
      transform: translateY(0px) translateX(0px);
    }
    25% {
      transform: translateY(-3px) translateX(2px);
    }
    50% {
      transform: translateY(-1px) translateX(-2px);
    }
    75% {
      transform: translateY(-4px) translateX(1px);
    }
  }

  @keyframes wave-float-up {
    0%, 100% {
      transform: translateY(0px) translateX(0px);
    }
    25% {
      transform: translateY(-5px) translateX(1px);
    }
    50% {
      transform: translateY(-8px) translateX(-1px);
    }
    75% {
      transform: translateY(-3px) translateX(2px);
    }
  }

  @keyframes wave-float-down {
    0%, 100% {
      transform: translateY(0px) translateX(0px);
    }
    25% {
      transform: translateY(3px) translateX(-1px);
    }
    50% {
      transform: translateY(6px) translateX(2px);
    }
    75% {
      transform: translateY(2px) translateX(-2px);
    }
  }

  @keyframes wave-float-left {
    0%, 100% {
      transform: translateY(0px) translateX(0px);
    }
    25% {
      transform: translateY(-2px) translateX(-4px);
    }
    50% {
      transform: translateY(1px) translateX(-7px);
    }
    75% {
      transform: translateY(-3px) translateX(-2px);
    }
  }

  @keyframes wave-float-right {
    0%, 100% {
      transform: translateY(0px) translateX(0px);
    }
    25% {
      transform: translateY(-1px) translateX(3px);
    }
    50% {
      transform: translateY(2px) translateX(6px);
    }
    75% {
      transform: translateY(-2px) translateX(4px);
    }
  }
  
  .top-nav {
    position: absolute;
    top: 1em;
    right: 2em;
    z-index: 10;
    font-size: 0.9em;
  }
  
  .top-nav a {
    margin-left: 1em;
    color: #111;
    text-decoration: none;
  }
  
  .free-layout {
    position: relative;
    width: 100vw;
    height: 100vh;
    z-index: 1;
  }
  
  .item {
    position: absolute;
    cursor: pointer;
    z-index: 1;
    transition: all 0.8s ease-in-out;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  
  .seal-character {
    filter: drop-shadow(4px 4px 8px rgba(0, 0, 0, 0.3));
    transition: all 0.8s ease-in-out;
  }
  
  .character-label {
    font-family: "Noto Serif SC", serif;
    font-weight: 100;
    font-size: 0.8em;
    color: #666;
    margin-top: 0.5em;
    text-align: center;
    transition: all 0.8s ease-in-out;
  }
  
  .item::before {
    content: "";
    position: absolute;
    top: -10%; left: -10%;
    width: 120%;
    height: 120%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    z-index: -1;
    transition: opacity 1.2s ease;
    pointer-events: none;
    border-radius: 50%;
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
    -webkit-mask: radial-gradient(ellipse at center, black 60%, transparent 100%);
    mask: radial-gradient(ellipse at center, black 60%, transparent 100%);
  }
  
  .item:hover {
    animation: breathing 3s ease-in-out infinite;
  }
  
  .item:hover .seal-character {
    filter: drop-shadow(6px 6px 12px rgba(0, 0, 0, 0.5)) brightness(0) invert(1);
    transform: scale(1.05);
  }
  
  .item:hover .character-label {
    color: #333;
    transform: scale(1.02);
    opacity: 0;
    transition: opacity 0.3s ease;
  }
  
  .item:hover::before {
    opacity: 1;
  }
  
  .item[data-index="1"]::before {
    background-image: url('./PICs/Project1-cover.png');
  }
  .item[data-index="2"]::before {
    background-image: url('./PICs/Project2-cover.png');
  }
  .item[data-index="3"]::before {
    background-image: url('./PICs/Project3-cover.png');
  }
  .item[data-index="4"]::before {
    background-image: url('./PICs/Project4-cover.png');
  }
  .item[data-index="5"]::before {
    background-image: url('./PICs/Project5-cover.png');
  }
  .item[data-index="6"]::before {
    background-image: url('./PICs/Project6-cover.png');
  }
  .item[data-index="7"]::before {
    background-image: url('./PICs/Project7-cover.png');
  }
  
  @keyframes breathing {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
  }
  
  /* Link styles for rain item */
  .item a {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 100%;
    height: 100%;
  }
  
  .item a:hover {
    text-decoration: none;
  }
  
  /* Ensure the link area covers the entire item */
  .item[data-index="4"] a {
    position: relative;
    z-index: 2;
  }