* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-size: 14px;
    font-family: 'Inter', sans-serif;
}

a {
    text-decoration: none;
}

.main {
    margin-top: 100px;
}

/* 第一区块 - 介绍区 */
.hero-section {
    display: flex;
    gap: 2rem;
    padding: 2rem min(4rem, 5%);
    background: linear-gradient(45deg, #fff1eb 0%, #ace0f9 100%);
    align-items: center;
}

.hero-image {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    height: 400px;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.hero-image:hover img {
    transform: scale(1.05);
}

.hero-content {
    flex: 1;
    padding: 2rem;
}

.hero-title {
    font-size: clamp(1.5rem, 2.5vw, 2.5rem);
    color: #2c3e50;
    margin-bottom: 1.5rem;
    position: relative;
}

.hero-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 60px;
    height: 3px;
    background: #e74c3c;
}

.hero-text {
    color: #34495e;
    line-height: 1.8;
    font-size: 1.1rem;
}

/* 第二区块 - 行程网格 */
.tours-section {
    padding: 0 min(4rem, 5%) 2rem;
}

.tour-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 2rem;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .hero-section {
        flex-direction: column;
    }

    .hero-image {
        min-width: 100%;
    }

    .hero-content {
        padding: 2rem 0;
    }
}

@media (max-width: 991px) {
    .tour-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .tour-grid {
        grid-template-columns: repeat(2, 1fr);
    }

}

@media (max-width: 425px) {
    .tour-grid {
        grid-template-columns: repeat(1, 1fr);
    }

    .hero-text {
        font-size: 1rem;
    }
}


/* 選單 */
.enterBox {
    font-size: 18px;
    color: #9cc8e3;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
    margin: 1rem min(4rem, 5%);
    padding: 1rem;
    border-bottom: 1px solid #ddd;
}

.enterBox .selectBox {
    position: relative;
    /* 讓 ::after 定位於此 */
    display: inline-block;
    /* 跟 select 大小一致 */
}

.enterBox .selectBox::after {
    content: '';
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-left: 5px solid transparent;
    border-right: 5px solid transparent;
    border-top: calc(5px * 1.414) solid #6ab0d3;
    pointer-events: none;
    /* 讓滑鼠事件直接穿透到下面的 select */
}

.enterBox .selectBox select {
    font-size: 16px;
    padding: 5px 30px 5px 10px;
    border-radius: 5px;
    border: 1px solid #9cc8e3;
    cursor: pointer;
    appearance: none;
    height: 2.5rem;
    width: 10rem;
}

.enterBox .selectBox select:focus {
    outline: none;
    box-shadow: 0 0 5px #6ab0d3, 0 0 5px #6ab0d3, 0 0 5px #6ab0d3;
}