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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'SimHei', sans-serif;
    background: #1a1a1a;
    padding: 0;
    overflow-x: hidden;
}

.header {
    background: #252525;
    color: #fff;
    padding: 15px 20px;
    border-bottom: 1px solid #333;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header h1 {
    font-size: 18px;
    font-weight: 500;
    color: #fff;
}

.nav-links {
    display: flex;
    gap: 15px;
}

.nav-links a {
    color: #888;
    text-decoration: none;
    font-size: 14px;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s;
}

.nav-links a:hover {
    color: #fff;
    background: #333;
}

.nav-links a.active {
    color: #00bfff;
    background: #2a2a2a;
}

.stock-info {
    display: flex;
    gap: 30px;
    font-size: 14px;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    color: #888;
    font-size: 12px;
    margin-bottom: 2px;
}

.info-value {
    color: #fff;
    font-weight: 500;
}

.info-value.up {
    color: #ff4444;
}

.info-value.down {
    color: #00c896;
}

.container {
    background: #1a1a1a;
    padding: 0;
}

#klineChart {
    width: 100%;
    height: calc(100vh - 60px);
    min-height: 700px;
}

.loading {
    text-align: center;
    padding: 50px;
    color: #888;
    background: #1a1a1a;
    height: calc(100vh - 60px);
    display: flex;
    align-items: center;
    justify-content: center;
}

.error {
    color: #ff4444;
    padding: 20px;
    background: #2a1a1a;
    border-radius: 4px;
    margin: 20px;
}