:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --text-color: #333;
    --light-bg: #f8f9fa;
    --white: #ffffff;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
}

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

/* 导航栏样式 */
header {
    background-color: var(--primary-color);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav ul li a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* 英雄区域样式 */
.hero {
    background: linear-gradient(rgba(44, 62, 80, 0.9), rgba(44, 62, 80, 0.9)),
                url('../images/hero-bg.jpg') center/cover;
    height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--white);
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.5rem;
}

/* 功能区域样式 */
section {
    padding: 5rem 0;
}

.features {
    background-color: var(--light-bg);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-card ul {
    list-style-position: inside;
    margin-top: 1rem;
}

/* 天气API区域样式 */
.weather-api {
    background-color: var(--secondary-color);
    color: var(--white);
    text-align: center;
}

.weather-api h2 {
    margin-bottom: 1.5rem;
}

/* 设置区域样式 */
.settings {
    background-color: var(--light-bg);
}

.settings ul {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 2rem;
}

.settings li {
    background: var(--white);
    padding: 1rem;
    border-radius: 5px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 页脚样式 */
footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 2rem 0;
    text-align: center;
}

/* 响应式设计 */
@media (max-width: 768px) {
    nav ul {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }
    
    section {
        padding: 3rem 0;
    }
}