/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部导航 */
header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    color: #2c3e50;
}

nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #666;
    font-size: 0.95rem;
}

nav a:hover {
    color: #2980b9;
}

/* 英雄区 */
.hero {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.search-box {
    display: flex;
    max-width: 500px;
    margin: 0 auto;
}

.search-box input {
    flex: 1;
    padding: 12px 20px;
    border: none;
    border-radius: 4px 0 0 4px;
    font-size: 1rem;
}

.search-box button {
    padding: 12px 25px;
    background: #2ecc71;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    font-weight: 600;
}

/* 国家网格 */
.country-grid {
    padding: 50px 20px;
}

.country-grid h2 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.8rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 8px;
    text-decoration: none;
    color: #333;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.12);
}

.card h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.card p {
    color: #666;
    font-size: 0.95rem;
}

/* 内容块 */
.content-block {
    padding: 50px 20px;
    max-width: 800px;
    margin: 0 auto;
}

.content-block h2 {
    margin-bottom: 20px;
}

.info-box {
    background: #e8f4fd;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
}

.info-box ul {
    margin-left: 20px;
    margin-top: 10px;
}

/* 国家详情页 */
.country-page {
    padding: 40px 20px;
    max-width: 900px;
    margin: 0 auto;
}

.quick-info {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin: 30px 0;
}

.info-item {
    background: white;
    padding: 15px 25px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.info-item .label {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-bottom: 5px;
}

.info-item .value {
    font-size: 1.4rem;
    font-weight: 700;
    color: #2980b9;
}

section {
    margin-bottom: 40px;
}

/* 推荐产品 */
.recommendation {
    background: white;
    padding: 30px;
    border-radius: 8px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.product-card {
    border: 1px solid #eee;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #2980b9;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 10px;
}

/* FAQ */
.faq {
    margin-top: 50px;
}

.qa-item {
    margin-bottom: 25px;
}

.qa-item h3 {
    color: #2c3e50;
    margin-bottom: 10px;
}

/* 页脚 */
footer {
    background: #2c3e50;
    color: #bdc3c7;
    padding: 30px 20px;
    text-align: center;
    margin-top: 50px;
}

footer a {
    color: #bdc3c7;
    margin: 0 10px;
}

/* 移动端适配 */
@media (max-width: 600px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    
    .search-box {
        flex-direction: column;
    }
    
    .search-box button {
        border-radius: 4px;
        margin-top: 10px;
    }
    
    .quick-info {
        flex-direction: column;
    }
}