/* 全局样式 */
:root {
    --primary-color: #6941c6;
    --secondary-color: #10a37f;
    --dark-color: #1a1a2e;
    --light-color: #ffffff;
    --gray-color: #f5f5f7;
    --text-color: #333333;
    --border-radius: 10px;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--gray-color);
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-color);
}

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--light-color);
    padding: 10px 20px;
    border-radius: 5px;
    transition: var(--transition);
    font-weight: 500;
}

.btn:hover {
    background-color: var(--secondary-color);
    color: var(--light-color);
    transform: translateY(-3px);
}

/* 头部样式 */
header {
    background-color: var(--light-color);
    box-shadow: var(--box-shadow);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
}

.logo span {
    color: var(--primary-color);
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 20px;
}

nav ul li a {
    color: var(--dark-color);
    font-weight: 500;
}

nav ul li a:hover {
    color: var(--primary-color);
}

/* 英雄区域 */
.hero {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--light-color);
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero span {
    background-color: rgba(255, 255, 255, 0.2);
    padding: 5px 10px;
    border-radius: 5px;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.search-box {
    display: flex;
    max-width: 600px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 50px;
    background-color: var(--light-color);
    box-shadow: var(--box-shadow);
}

.search-box input {
    flex: 1;
    padding: 15px 20px;
    border: none;
    outline: none;
    font-size: 1rem;
}

.search-box button {
    background-color: var(--primary-color);
    color: var(--light-color);
    border: none;
    padding: 0 25px;
    cursor: pointer;
    transition: var(--transition);
}

.search-box button:hover {
    background-color: var(--secondary-color);
}

/* 特色区域 */
.featured, .category {
    padding: 60px 0;
    background-color: var(--light-color);
}

.featured h2, .category h2 {
    text-align: center;
    margin-bottom: 40px;
    font-size: 2rem;
    color: var(--dark-color);
    position: relative;
}

.featured h2::after, .category h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--light-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 20px auto 10px;
}

.card-icon i {
    font-size: 1.5rem;
    color: var(--light-color);
}

.card h3 {
    text-align: center;
    margin: 10px 0;
    color: var(--dark-color);
}

.card p {
    padding: 0 20px;
    margin-bottom: 20px;
    text-align: center;
    font-size: 0.9rem;
    color: #666;
    flex-grow: 1;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    padding: 0 20px;
    margin-bottom: 20px;
}

.tags span {
    background-color: var(--gray-color);
    color: var(--text-color);
    font-size: 0.8rem;
    padding: 5px 10px;
    border-radius: 20px;
    margin: 0 5px 5px 0;
}

.card .btn {
    margin: 0 20px 20px;
    text-align: center;
}

/* 分类区域 */
.category {
    background-color: var(--gray-color);
}

.category:nth-child(even) {
    background-color: var(--light-color);
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: var(--light-color);
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    margin-bottom: 40px;
}

.footer-logo {
    flex: 1 1 300px;
    margin-bottom: 30px;
}

.footer-logo h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.footer-logo span {
    color: var(--primary-color);
}

.footer-links {
    flex: 2 1 600px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
}

.link-group {
    flex: 1 1 150px;
    margin-bottom: 30px;
}

.link-group h3 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: var(--light-color);
}

.link-group ul li {
    margin-bottom: 10px;
}

.link-group ul li a {
    color: #ccc;
    font-size: 0.9rem;
}

.link-group ul li a:hover {
    color: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
}

.footer-bottom p {
    font-size: 0.9rem;
    color: #ccc;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        display: none;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .card-container {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
}

@media (max-width: 576px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .card-container {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        flex-direction: column;
    }
}