/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f9f9f9;
}

a {
    text-decoration: none;
    color: #4a89dc;
}

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    background: #4a89dc;
    color: #fff;
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.btn:hover {
    background: #3a70b9;
}

.section-title {
    text-align: center;
    margin: 40px 0;
    font-size: 2.5rem;
    color: #333;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 3px;
    background: #4a89dc;
    margin: 10px auto;
}

/* 导航栏 */
header {
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 5%;
}

.logo {
    font-size: 1.8rem;
    font-weight: bold;
    color: #4a89dc;
}

.nav-links {
    display: flex;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #4a89dc;
}

.burger {
    display: none;
    cursor: pointer;
}

.burger div {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 5px;
    transition: all 0.3s ease;
}

/* 英雄区域 */
#hero {
    height: 100vh;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('../images/banner.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    text-align: center;
    color: #fff;
    padding-top: 80px;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.hero-content p {
    font-size: 1.5rem;
    margin-bottom: 30px;
}

/* 趣事部分 */
#stories {
    padding: 80px 5%;
}

.stories-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

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

.story-card:hover {
    transform: translateY(-10px);
}

.story-image {
    height: 200px;
    overflow: hidden;
}

.story-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.story-card:hover .story-image img {
    transform: scale(1.1);
}

.story-content {
    padding: 20px;
}

.story-content h3 {
    margin-bottom: 5px;
    color: #333;
}

.date {
    color: #888;
    font-size: 0.9rem;
    display: block;
    margin-bottom: 10px;
}

.read-more {
    color: #4a89dc;
    font-weight: bold;
    display: inline-block;
    margin-top: 10px;
}


/* 页脚 */
footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0;
        height: 92vh;
        top: 8vh;
        background-color: #fff;
        display: flex;
        flex-direction: column;
        align-items: center;
        width: 50%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        box-shadow: -5px 0 10px rgba(0, 0, 0, 0.1);
    }

    .nav-links li {
        opacity: 0;
        margin: 20px 0;
    }

    .burger {
        display: block;
    }

    .nav-active {
        transform: translateX(0%);
    }

    .about-container {
        flex-direction: column;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.2rem;
    }
}

@keyframes navLinkFade {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.toggle .line1 {
    transform: rotate(-45deg) translate(-5px, 6px);
}

.toggle .line2 {
    opacity: 0;
}

.toggle .line3 {
    transform: rotate(45deg) translate(-5px, -6px);
}