:root {
    --bg-color: #ffffff;
    --text-color: #2d3436;
    --content-bg: #f8f9fa;
    --carousel-control-bg: rgba(0,0,0,0.5);
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --text-color: #e0e0e0;
    --content-bg: #2d2d2d;
    --carousel-control-bg: rgba(255,255,255,0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    transition: background 0.3s ease;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    font-family: 'Noto Sans SC', sans-serif;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 5%;
    background: rgba(var(--bg-color), 0.9);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.logo {
    font-family: 'Bodoni Moda', serif;
    font-size: 1.8rem;
    color: var(--text-color);
}

/* 轮播图 */
.carousel {
    height: 60vh;
    margin-top: 70px;
    position: relative;
    overflow: hidden;
}

.slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    background-size: cover;
    background-position: center;
}

.slide.active {
    opacity: 1;
}

/* 内容区域 */
.content-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
    padding: 4rem 5%;
    background: var(--content-bg);
}

.text-box {
    background: var(--content-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 控制按钮 */
.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--carousel-control-bg);
    color: white;
    padding: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.prev { left: 2%; }
.next { right: 2%; }