/* ===== 浮动气球首页样式 ===== */

.page-index-balloons {
    background: radial-gradient(ellipse at center, #81d4fa 0%, #b3e5fc 30%, #e1f5fe 60%, #f0f8ff 100%);
    background-attachment: fixed;
    overflow: hidden;
}

.page-index-balloons .navbar {
    background: transparent;
    backdrop-filter: none;
    box-shadow: none;
    border-bottom: none;
    position: relative;
}

.page-index-balloons .navbar .logo {
    display: none;
}

.page-index-balloons .nav-container {
    justify-content: center;
}

.page-index-balloons .nav-menu {
    gap: 5rem;
}

.page-index-balloons .navbar::after {
    display: none;
}

.page-index-balloons .main-content {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    max-width: none;
    padding: 0;
    margin: 0;
    overflow: hidden;
    z-index: 1;
}

.page-index-balloons .navbar {
    position: relative;
    z-index: 100;
}

/* 气球容器 */
.balloons-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    /* 边框改为透明 */
    border: 3px solid transparent;
    box-sizing: border-box;
}

/* 单个气球 */
.balloon {
    position: absolute;
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    cursor: pointer;
    pointer-events: auto;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.balloon:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
    z-index: 100 !important;
}

.balloon img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 不同大小的气球 */
.balloon.size-small {
    width: 100px;
    height: 100px;
}

.balloon.size-medium {
    width: 150px;
    height: 150px;
}

.balloon.size-large {
    width: 200px;
    height: 200px;
}

/* 中央标题 */
.welcome-text-center {
    position: absolute;
    top: 45%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    z-index: 50;
    pointer-events: none;
}

.welcome-text-center .welcome-title {
    margin: 0;
    font-size: 4.5rem;
    color: #1a1a1a;
    text-shadow: 
        -2px -2px 0 #fff,
        2px -2px 0 #fff,
        -2px 2px 0 #fff,
        2px 2px 0 #fff,
        0 2px 10px rgba(0, 0, 0, 0.15);
    font-weight: 800;
    line-height: 1.2;
}

.welcome-text-center .welcome-title-main {
    font-family: "Syne", "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    display: block;
    margin: 0;
}

.welcome-text-center .welcome-title-sub {
    font-family: "ZCOOL QingKe HuangYou", "Ma Shan Zheng", "Long Cang", "KaiTi", "楷体", cursive;
    font-size: 0.7em;
    font-weight: 400;
    letter-spacing: 0.3em;
    color: #1a1a1a;
    display: block;
    margin-top: 3rem;
}

/* 响应式 */
@media (max-width: 768px) {
    .balloon {
        width: 100px;
        height: 100px;
    }
    
    .balloon.size-small {
        width: 70px;
        height: 70px;
    }
    
    .balloon.size-medium {
        width: 100px;
        height: 100px;
    }
    
    .balloon.size-large {
        width: 130px;
        height: 130px;
    }
    
    .welcome-text-center {
        padding: 1.5rem 2rem;
    }
    
    .welcome-text-center .welcome-title {
        font-size: 2rem;
    }
}