/* 全局样式 */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary-color: #2a6cad;
    --secondary-color: #e07832;
    --accent-color: #6c1d45;
    --text-color: #333;
    --light-text: #fff;
    --bg-color: #f8f9fa;
    --dark-bg: #2c3e50;
    --border-color: #ddd;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

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

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

section {
    padding: 4rem 0;
}

h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--primary-color);
    position: relative;
}

h2:after {
    content: "";
    display: block;
    width: 50px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 0.5rem auto;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: var(--light-text);
    border-radius: 5px;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: #1d5084;
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--light-text);
}

.btn-small {
    padding: 8px 15px;
    font-size: 0.9rem;
    border-radius: 4px;
}

.btn-large {
    padding: 12px 30px;
    font-size: 1.1rem;
    font-weight: bold;
}

/* 头部导航 */
header {
    background-color: var(--light-text);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 15px;
}

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

.logo p {
    color: var(--accent-color);
    font-size: 0.9rem;
}

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

nav ul li {
    margin-left: 1.5rem;
}

nav ul li a {
    color: var(--text-color);
    position: relative;
    padding-bottom: 5px;
}

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

nav ul li a.active:after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-color);
}

/* 英雄区域 */
.hero {
    background-image: url('../images/tibet-hero.jpg');
    background-size: cover;
    background-position: center;
    color: var(--light-text);
    text-align: center;
    padding: 8rem 0;
    position: relative;
}

.hero:before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--light-text);
}

.hero h2:after {
    background-color: var(--light-text);
}

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

/* 介绍部分 */
.intro-content {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.intro-text {
    flex: 1;
}

.intro-text p {
    margin-bottom: 1rem;
}

.intro-image {
    flex: 1;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* 特色区域 */
.features {
    background-color: #eef5fb;
}

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

.feature-box {
    background-color: var(--light-text);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.feature-box:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-box i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

.feature-box p {
    margin-bottom: 1.5rem;
}

/* 图片展示 */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    border-radius: 8px;
    overflow: hidden;
    position: relative;
    height: 200px;
}

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

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

.gallery-item .overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--light-text);
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.gallery-item:hover .overlay {
    transform: translateY(0);
}

/* 用户评价 */
.testimonials {
    background-color: var(--dark-bg);
    color: var(--light-text);
}

.testimonials h2 {
    color: var(--light-text);
}

.testimonials h2:after {
    background-color: var(--secondary-color);
}

.testimonial-slider {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none; /* Firefox */
    gap: 2rem;
    padding: 1rem 0;
}

.testimonial-slider::-webkit-scrollbar {
    display: none; /* Chrome, Safari, Opera */
}

.testimonial {
    flex: 0 0 100%;
    scroll-snap-align: start;
    background-color: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
}

.testimonial p {
    font-style: italic;
    margin-bottom: 1rem;
}

.testimonial-author {
    font-weight: bold;
    color: var(--secondary-color);
}

/* 号召行动 */
.cta {
    text-align: center;
    padding: 5rem 0;
}

.cta p {
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* 页脚 */
footer {
    background-color: var(--dark-bg);
    color: var(--light-text);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo h3 {
    color: var(--light-text);
    margin-bottom: 0.5rem;
}

.footer-links h4,
.footer-contact h4 {
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 0.5rem;
}

.footer-links ul li a {
    color: var(--light-text);
}

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

.footer-contact p {
    margin-bottom: 0.5rem;
}

.footer-contact i {
    margin-right: 0.5rem;
    color: var(--secondary-color);
}

.social-icons {
    margin-top: 1rem;
}

.social-icons a {
    display: inline-block;
    margin-right: 1rem;
    color: var(--light-text);
    font-size: 1.5rem;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        padding: 1rem;
    }
    
    nav ul {
        margin-top: 1rem;
    }
    
    nav ul li {
        margin-left: 0.8rem;
        margin-right: 0.8rem;
    }
    
    .intro-content {
        flex-direction: column;
    }
    
    .hero h2 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    nav ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    nav ul li {
        margin: 0.5rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
}