/* Introduction Section Styles */
.intro-section {
    min-height: 100vh;
    background-color: #FCF3E7;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

/* Dynamic Title */
.dynamic-title {
    position: fixed;
    top: 0vh;
    left: 50%;
    transform: translateX(-50%);
    font-size: 5rem;
    font-weight: 900;
    /* color: #50A1EF; */
    color: black;
    opacity: 0.1;
    white-space: nowrap;
    z-index: 10;
    transition: all 0.1s ease;
}

.highlight-image-wrapper {
    position: relative;
    display: inline-block;
  }
  
  .underline-image {
    position: absolute;
    bottom: -0.2em;    /* 控制垂直位置 */
    left: 0;
    width: 100%;       /* 让波浪线贴合文字宽度 */
    height: auto;      /* 保持比例 */
    pointer-events: none;
    z-index: -1;       /* 在文字下面 */
  }
  
  

/* Polaroid Gallery */
:root {
    --polaroid-scale: 1.25; /* 默认放大 1.15 倍，可随意改 */
  }
.polaroid-gallery {
    display: flex;
    /* justify-content: center; */
    /* align-items: center; */
    transform: translateY(-10rem); /* 向上偏移 2rem */
    gap: 6rem;
    margin-top: 0rem;
    padding: 0 2rem;
}

.polaroid {
    background: white;
    padding: 15px 15px 40px 15px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    width: 300px;
    transition: transform 0.3s ease;
    cursor: pointer;
    transform: scale(var(--polaroid-scale));
    margin-top: 2rem;
    /* margin-bottom: 1rem; */
}

.polaroid img {
    width: 100%;
    height: auto;
    display: block;
}

/* Slight rotation for each polaroid */
.polaroid:nth-child(1) {
    transform: scale(var(--polaroid-scale)) rotate(-3deg);
}

.polaroid:nth-child(2) {
    transform: scale(var(--polaroid-scale)) rotate(2deg);
}

.polaroid:nth-child(3) {
    transform: scale(var(--polaroid-scale)) rotate(-2deg);
}

/* Hover effects */
.polaroid:hover {
    transform: translateY(-10px) rotate(0deg);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
}

/* Content styles */
.intro-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    margin-top: 6rem;
}

.intro-section .lead {
    font-size: 1.8rem;
    line-height: 1.6;
    color: #2C3E50;
    margin-bottom: 3rem;
    max-width: 800px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s ease-out forwards;
}

.infographic-note {
    position: absolute;
    font-size: 3rem;
    max-width: 1600px;
    margin-top: -4rem;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
    /* font-style: italic; */
    line-height: 1.1;
    color: #444;
  }

/* Responsive Design */
@media (max-width: 1200px) {
    .polaroid {
        width: 250px;
    }
}

@media (max-width: 991px) {
    .polaroid-gallery {
        flex-wrap: wrap;
        gap: 3rem;
    }

    .polaroid {
        width: calc(50% - 2rem);
    }

    .dynamic-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .intro-section {
        padding: 60px 0;
    }

    .polaroid-gallery {
        flex-direction: column;
        align-items: center;
    }

    .polaroid {
        width: 80%;
        max-width: 300px;
    }

    .intro-section .lead {
        font-size: 1.5rem;
        text-align: center;
    }

    .dynamic-title {
        font-size: 2rem;
    }
}

/* Animation */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}