/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4efe9 100%);
    min-height: 100vh;
}

/* 由 OpenClaw 驱动 */
.powered-by {
    background: #1a472a;
    color: rgba(255,255,255,0.8);
    text-align: center;
    padding: 0.4rem;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

/* 语言切换器 - 导航栏上方 */
.lang-switcher-bar {
    background: linear-gradient(135deg, #0d2818 0%, #1a472a 100%);
    padding: 0.6rem 1rem;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 0.5rem;
}

.lang-switcher {
    display: flex;
    gap: 0.3rem;
    background: rgba(255,255,255,0.15);
    padding: 0.3rem;
    border-radius: 20px;
}

.lang-btn {
    padding: 0.3rem 0.8rem;
    border: none;
    border-radius: 15px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: all 0.3s ease;
    background: transparent;
    color: rgba(255,255,255,0.8);
}

.lang-btn.active {
    background: #fff;
    color: #1a472a;
}

.lang-btn:hover:not(.active) {
    background: rgba(255,255,255,0.2);
    color: #fff;
}

/* 导航栏 */
nav {
    background: linear-gradient(135deg, #1a472a 0%, #2d5a3f 100%);
    padding: 1rem 1rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    overflow-x: visible;
    min-height: 50px;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
    max-width: 100%;
    overflow: visible;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 0.4rem 0.6rem;
    border-radius: 15px;
    transition: all 0.3s ease;
    font-size: 0.85rem;
    white-space: nowrap;
    flex-shrink: 0;
}

nav a:hover, nav a.active {
    background: rgba(255,255,255,0.2);
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

/* 首页头部 */
.hero {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #1a472a 0%, #2d5a3f 100%);
    color: white;
    border-radius: 0 0 50% 50% / 30px;
    margin-bottom: 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.3rem;
    opacity: 0.9;
}

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

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

.card h3 {
    color: #1a472a;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.card a {
    display: inline-block;
    margin-top: 1rem;
    color: #2d5a3f;
    text-decoration: none;
    font-weight: 600;
}

.card a:hover {
    text-decoration: underline;
}

/* 内容页面 */
.page-header {
    background: linear-gradient(135deg, #1a472a 0%, #2d5a3f 100%);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
    border-radius: 0 0 30px 30px;
    margin-bottom: 2rem;
}

.page-header h1 {
    font-size: 2.5rem;
}

.content-section {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.content-section h2 {
    color: #1a472a;
    border-bottom: 3px solid #4CAF50;
    padding-bottom: 0.5rem;
    margin-bottom: 1.5rem;
}

.content-section h3 {
    color: #2d5a3f;
    margin: 1.5rem 0 1rem;
}

.content-section ul, .content-section ol {
    margin-left: 2rem;
    margin-bottom: 1rem;
}

.content-section li {
    margin-bottom: 0.5rem;
}

.tip-box {
    background: #e8f5e9;
    border-left: 4px solid #4CAF50;
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: px 10px0 10 0;
}

.warning-box {
    background: #fff3e0;
    border-left: 4px solid #ff9800;
    padding: 1rem 1.5rem;
    margin: 1rem 0;
    border-radius: 0 10px 10px 0;
}

/* 表格样式 */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e0e0e0;
}

th {
    background: #1a472a;
    color: white;
}

tr:hover {
    background: #f5f5f5;
}

/* 页脚 */
footer {
    background: #1a472a;
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
}

/* 响应式 */
@media (max-width: 900px) {
    nav {
        padding: 0.6rem 0.3rem;
    }
    
    nav ul {
        gap: 0.2rem;
    }
    
    nav a {
        padding: 0.3rem 0.5rem;
        font-size: 0.75rem;
    }
    
    .lang-switcher-bar {
        padding: 0.4rem;
    }
    
    .lang-btn {
        padding: 0.2rem 0.4rem;
        font-size: 0.65rem;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    nav ul {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    
    nav a {
        font-size: 0.9rem;
    }
    
    .container {
        padding: 1rem;
    }
}