/* 全局样式 */
:root {
    --primary-color: #FF8C00;
    --secondary-color: #FFD700;
    --dark-color: #333;
    --light-color: #f4f4f4;
    --danger-color: #dc3545;
    --success-color: #28a745;
}

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

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

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

ul {
    list-style: none;
}

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

.btn {
    display: inline-block;
    background: var(--primary-color);
    color: #fff;
    padding: 12px 24px;
    border-radius: 30px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn:hover {
    background: #e67e00;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

h1, h2, h3, h4 {
    margin-bottom: 15px;
    line-height: 1.2;
}

section {
    padding: 80px 0;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    width: 50px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 1.8rem;
    color: var(--primary-color);
    margin-bottom: 0;
}

nav ul {
    display: flex;
}

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

nav ul li a {
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

nav ul li a:hover::after {
    width: 100%;
}

/* 英雄区样式 */
.hero {
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.6)), url('images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 100vh;
    display: flex;
    align-items: center;
    color: #fff;
    padding-top: 60px;
}

.hero-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

/* 特色功能样式 */
.features {
    background-color: #fff;
    text-align: center;
}

.features h2 {
    font-size: 2.5rem;
    margin-bottom: 50px;
    position: relative;
}

.features h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.feature-card {
    background: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.feature-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.5rem;
}

/* 分类样式 */
.categories {
    text-align: center;
}

.categories h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.categories p {
    font-size: 1.2rem;
    margin-bottom: 50px;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.category-card {
    height: 200px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.category-card:hover {
    transform: scale(1.05);
}

.category-card.romance {
    background: url('images/romance.jpg') center/cover;
}

.category-card.mystery {
    background: url('images/mystery.jpg') center/cover;
}

.category-card.comedy {
    background: url('images/comedy.jpg') center/cover;
}

.category-card.fantasy {
    background: url('images/fantasy.jpg') center/cover;
}

.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: background 0.3s ease;
}

.category-card:hover .overlay {
    background: rgba(0, 0, 0, 0.3);
}

.overlay h3 {
    font-size: 1.8rem;
    margin: 0;
}

/* 下载部分样式 */
.download {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: #fff;
    text-align: center;
}

.download h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.download p {
    font-size: 1.2rem;
    margin-bottom: 40px;
}

.download-options {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 50px;
    flex-wrap: wrap;
}

.qr-code {
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.qr-code img {
    width: 150px;
    height: 150px;
}

.qr-code p {
    color: var(--dark-color);
    margin-top: 10px;
    margin-bottom: 0;
}

.download .btn {
    background: #fff;
    color: var(--primary-color);
}

.download .btn:hover {
    background: #f0f0f0;
}

/* 关于我们样式 */
.about {
    text-align: center;
    background-color: #fff;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.about p {
    max-width: 800px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* 页脚样式 */
footer {
    background-color: var(--dark-color);
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 40px;
    margin-right: 10px;
}

.footer-links h4 {
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--primary-color);
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
}

/* 移动菜单 */
.menu-toggle {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary-color);
}

/* 下拉菜单样式 */
.dropdown {
    position: relative;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
}

.dropdown-toggle i {
    font-size: 0.8rem;
    margin-left: 5px;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    padding: 10px 0;
    min-width: 150px;
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    display: block;
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu li a {
    display: block;
    padding: 8px 15px;
    white-space: nowrap;
}

.dropdown-menu li a:hover {
    background-color: #f5f5f5;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .hero-content p {
        font-size: 1.2rem;
    }
    
    .features-grid,
    .categories-grid {
        grid-template-columns: 1fr;
    }
    
    .download-options {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
    }
    
    .menu-toggle {
        display: block;
    }
    
    nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: #fff;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        z-index: 100;
    }
    
    nav.active {
        display: block;
    }
    
    nav ul {
        flex-direction: column;
    }
    
    nav ul li {
        margin: 0;
    }
    
    nav ul li a {
        display: block;
        padding: 15px 20px;
        border-bottom: 1px solid #eee;
    }
    
    nav ul li a::after {
        display: none;
    }
    
    .dropdown-menu {
        position: static;
        box-shadow: none;
        background-color: #f5f5f5;
        border-radius: 0;
        padding: 0;
    }
    
    .dropdown-menu li a {
        padding-left: 40px;
    }
}