/* 主要样式变量 */
:root {
    --primary-color: #e67e22;
    --secondary-color: #2980b9;
    --accent-color: #c0392b;
    --dark-color: #2c3e50;
    --light-color: #f8f9fa;
    --text-color: #333;
    --header-font: 'Microsoft YaHei', 'PingFang SC', sans-serif;
    --body-font: 'Noto Sans SC', 'SimSun', sans-serif;
    --box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--body-font);
    color: var(--text-color);
    background-color: #f5f5f5;
    line-height: 1.6;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--header-font);
    color: var(--dark-color);
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 0.5rem;
}

h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background-color: var(--primary-color);
}

p {
    margin-bottom: 1rem;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

button {
    border: none;
    cursor: pointer;
    outline: none;
}

/* 布局容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    margin-bottom: 1rem;
    display: inline-block;
}

.section-title h2::after {
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
}

.section-title p {
    max-width: 600px;
    margin: 0 auto;
    color: #666;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    z-index: 100;
    box-shadow: var(--box-shadow);
    padding: 1rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 0.5rem 0;
}

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

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

.logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-link {
    margin-left: 2rem;
    color: var(--dark-color);
    font-weight: 500;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary-color);
}

.toggle-btn {
    display: none;
    background: transparent;
    font-size: 1.5rem;
    color: var(--dark-color);
}

/* 主页标题 */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background-image: url('../images/xinjiang-hero.jpg');
    background-size: cover;
    background-position: center;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.7));
}

.hero-content {
    position: relative;
    z-index: 1;
    color: white;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-content h1 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: 1.5rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border-radius: 30px;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-color);
    color: white;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid white;
    color: white;
}

.btn-outline:hover {
    background-color: white;
    color: var(--dark-color);
}

/* 卡片样式 */
.card {
    background-color: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    height: 100%;
}

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

.card-img {
    height: 200px;
    position: relative;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.card-content {
    padding: 1.5rem;
}

.card-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.card-text {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
}

.card-link {
    display: inline-block;
    font-size: 0.9rem;
    font-weight: bold;
    color: var(--primary-color);
}

.card-link i {
    margin-left: 5px;
    transition: var(--transition);
}

.card-link:hover i {
    transform: translateX(5px);
}

.card-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

/* 网格系统 */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* 页脚 */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 2rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
}

.footer-desc {
    color: #bbb;
    margin-bottom: 1.5rem;
}

.footer-title {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--primary-color);
}

.footer-link {
    display: block;
    color: #bbb;
    margin-bottom: 0.8rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: white;
    transform: translateX(5px);
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.footer-contact-icon {
    color: var(--primary-color);
    margin-right: 1rem;
    font-size: 1.2rem;
}

.footer-social {
    display: flex;
    margin-top: 1.5rem;
}

.footer-social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-right: 1rem;
    transition: var(--transition);
}

.footer-social-link:hover {
    background-color: var(--primary-color);
    color: white;
}

.footer-bottom {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: #bbb;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .container {
        max-width: 100%;
    }
    
    .grid-3,
    .grid-4,
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .toggle-btn {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 300px;
        flex-direction: column;
        align-items: flex-start;
        background-color: white;
        padding: 2rem;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-link {
        margin: 1.5rem 0 0 0;
    }
    
    .close-btn {
        position: absolute;
        top: 1rem;
        right: 1rem;
        background: transparent;
        font-size: 1.5rem;
        color: var(--dark-color);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .grid-2,
    .grid-3,
    .grid-4,
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 576px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .section {
        padding: 3rem 0;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .btn {
        padding: 0.7rem 1.5rem;
        font-size: 0.9rem;
    }
}