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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    background: #f5f5f5;
    color: #333;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    display: block;
}

button {
    border: none;
    outline: none;
    background: none;
    cursor: pointer;
}

input, select, textarea {
    border: none;
    outline: none;
    font-family: inherit;
}

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

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

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

.text-center {
    text-align: center;
}

.text-right {
    text-align: right;
}

.text-left {
    text-align: left;
}

.text-ellipsis {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.text-ellipsis-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.color-primary {
    color: #ff6b6b;
}

.color-success {
    color: #52c41a;
}

.color-warning {
    color: #faad14;
}

.color-error {
    color: #ff4d4f;
}

.color-gray {
    color: #999;
}

.bg-primary {
    background: #ff6b6b;
}

.bg-white {
    background: #fff;
}

.mt-10 {
    margin-top: 10px;
}

.mt-20 {
    margin-top: 20px;
}

.mb-10 {
    margin-bottom: 10px;
}

.mb-20 {
    margin-bottom: 20px;
}

.ml-10 {
    margin-left: 10px;
}

.mr-10 {
    margin-right: 10px;
}

.p-10 {
    padding: 10px;
}

.p-20 {
    padding: 20px;
}

.border-radius {
    border-radius: 8px;
}

.shadow {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn {
    padding: 10px 20px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background: #ff6b6b;
    color: #fff;
}

.btn-primary:hover {
    background: #ff5252;
}

.btn-outline {
    border: 1px solid #ff6b6b;
    color: #ff6b6b;
}

.btn-outline:hover {
    background: #ff6b6b;
    color: #fff;
}

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

.card {
    background: #fff;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.tag-primary {
    background: #ff6b6b;
    color: #fff;
}

.tag-success {
    background: #52c41a;
    color: #fff;
}

.tag-warning {
    background: #faad14;
    color: #fff;
}

.tag-info {
    background: #1890ff;
    color: #fff;
}

.badge {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #ff4d4f;
    color: #fff;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 10px;
    min-width: 16px;
    text-align: center;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid #f3f3f3;
    border-top: 2px solid #ff6b6b;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.fade-in {
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.slide-up {
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { transform: translateY(100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}