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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #f6f6f6;
}

.header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 15px 20px;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #ff6b6b;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-menu a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.nav-menu a.active {
    color: #ff6b6b;
}

.search-box input {
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 20px;
    width: 250px;
}

.main-content {
    margin-top: 80px;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.waterfall-grid {
    column-count: 4;
    column-gap: 15px;
}

.pin-card {
    break-inside: avoid;
    margin-bottom: 15px;
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.pin-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.pin-image {
    width: 100%;
    height: auto;
    display: block;
}

.pin-info {
    padding: 15px;
}

.pin-title {
    font-size: 16px;
    margin-bottom: 8px;
    color: #333;
}

.pin-description {
    font-size: 14px;
    color: #666;
    line-height: 1.4;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .waterfall-grid {
        column-count: 2;
    }
    
    .navbar {
        flex-direction: column;
        gap: 10px;
    }
    
    .search-box input {
        width: 200px;
    }
}