/* 字体定义 */
@font-face {
    font-family: 'Qiji';
    src: url('fonts/qiji.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'JetBrains Mono';
    src: url('fonts/JetBrainsMono-Regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

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

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: 'JetBrains Mono', '仿宋', 'FangSong', 'Inter', sans-serif;
    background-color: #fffefd;
    color: #333333;
    line-height: 1.6;
    height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding-top: 5vh;
    padding-bottom: 5vh;
}

.welcome-container {
    display: flex;
    align-items: flex-end;
    margin-bottom: 15px;
}

.welcome {
    font-family: 'Qiji', '仿宋', 'FangSong', serif;
    font-size: 6rem;
    font-weight: 500;
    color: #222;
    margin-right: 15px;
}

.red-circle {
    width: 12px;
    height: 12px;
    border: 2px solid #e53935;
    border-radius: 50%;
    margin-bottom: 26px;
    background-color: transparent;
}

.intro {
    font-family: '仿宋', 'FangSong', 'JetBrains Mono', serif;
    font-size: 1.2rem;
    max-width: 600px;
    color: #444;
    font-weight: 300;
    line-height: 1.8;
    margin-bottom: 30px;
}

/* 英文内容使用JetBrains Mono字体 */
.intro:lang(en) {
    font-family: 'JetBrains Mono', 'Inter', monospace;
}

.links {
    display: flex;
    gap: 25px;
}

.links a {
    color: #555;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    text-decoration: none;
}

.links a:hover {
    color: #e53935;
    transform: translateY(-2px);
}

footer {
    padding: 20px 0;
    width: 100%;
    position: relative;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright {
    font-family: '仿宋', 'FangSong', serif;
    font-size: 0.95rem;
    color: #666;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 1;
    min-width: 0;
}

.language-switcher {
    position: relative;
    flex-shrink: 0;
    margin-left: 15px;
}

.language-btn {
    background: none;
    border: 2px solid #e53935;
    color: #e53935;
    padding: 5px 10px;
    cursor: pointer;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    font-weight: bold;
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border-radius: 0;
}

.language-btn:hover {
    background-color: #e53935;
    color: white;
    transform: scale(1.05);
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.welcome-container {
    animation: fadeIn 0.8s ease-out;
}

.intro {
    animation: fadeIn 1s ease-out;
}

.links {
    animation: fadeIn 1.2s ease-out;
}

footer {
    animation: fadeIn 1.4s ease-out;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .welcome {
        font-size: 6rem;
    }
    
    .red-circle {
        width: 12px;
        height: 12px;
        margin-bottom: 26px;
    }
    
    .intro {
        font-size: 1.1rem;
    }
    
    .links a {
        font-size: 1.8rem;
    }
    
    .footer-content {
        flex-wrap: nowrap;
    }
    
    .copyright {
        font-size: 0.85rem;
    }
    
    .language-btn {
        width: 30px;
        height: 30px;
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .welcome {
        font-size: 3rem;
    }
    
    .red-circle {
        width: 8px;
        height: 8px;
        margin-bottom: 16px;
    }
    
    .intro {
        font-size: 1rem;
    }
    
    .links {
        gap: 20px;
    }
    
    .links a {
        font-size: 1.6rem;
    }
    
    .copyright {
        font-size: 0.8rem;
    }
    
    .language-btn {
        width: 28px;
        height: 28px;
        font-size: 0.65rem;
    }
}

/* 超小屏幕适配 */
@media (max-width: 360px) {
    .footer-content {
        padding: 0 10px;
    }
    
    .copyright {
        font-size: 0.75rem;
    }
    
    .language-btn {
        width: 26px;
        height: 26px;
        font-size: 0.6rem;
    }
}