:root {
    --ep-color-primary: #409eff;
    --ep-color-primary-light-3: #79bbff;
    --ep-color-primary-light-5: #a0cfff;
    --ep-color-primary-light-7: #c6e2ff;
    --ep-color-primary-light-8: #d9ecff;
    --ep-color-primary-light-9: #ecf5ff;
    --ep-color-success: #67c23a;
    --ep-color-warning: #e6a23c;
    --ep-color-danger: #f56c6c;
    --ep-color-info: #909399;
    
    --ep-bg-color: #ffffff;
    --ep-bg-color-page: #f2f3f5;
    --ep-bg-color-overlay: #ffffff;
    
    --ep-text-color-primary: #303133;
    --ep-text-color-regular: #606266;
    --ep-text-color-secondary: #909399;
    --ep-text-color-placeholder: #a8abb2;
    --ep-text-color-disabled: #c0c4cc;
    
    --ep-border-color: #dcdfe6;
    --ep-border-color-light: #e4e7ed;
    --ep-border-color-lighter: #ebeef5;
    --ep-border-color-extra-light: #f2f6fc;
    --ep-border-color-dark: #d4d7de;
    --ep-border-color-darker: #cdd0d6;
    
    --ep-box-shadow: 0px 12px 32px 4px rgba(0, 0, 0, 0.04), 0px 8px 20px rgba(0, 0, 0, 0.08);
    --ep-box-shadow-light: 0px 0px 12px rgba(0, 0, 0, 0.12);
    --ep-box-shadow-lighter: 0px 0px 6px rgba(0, 0, 0, 0.12);
    
    --ep-border-radius-base: 4px;
    --ep-border-radius-small: 2px;
    --ep-border-radius-round: 20px;
    --ep-border-radius-circle: 100%;
    
    --ep-font-size-extra-large: 20px;
    --ep-font-size-large: 18px;
    --ep-font-size-medium: 16px;
    --ep-font-size-base: 14px;
    --ep-font-size-small: 13px;
    --ep-font-size-extra-small: 12px;
    
    --ep-aside-width: 220px;
    --ep-header-height: 60px;
}

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

body {
    font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
    font-size: var(--ep-font-size-base);
    color: var(--ep-text-color-primary);
    background: var(--ep-bg-color-page);
    line-height: 1.5;
}

a {
    color: var(--ep-color-primary);
    text-decoration: none;
}

a:hover {
    color: var(--ep-color-primary-light-3);
}

.ep-layout {
    display: flex;
    min-height: 100vh;
}

.ep-aside {
    width: var(--ep-aside-width);
    background: linear-gradient(180deg, #1d2129 0%, #165dff 100%);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
}

.ep-logo {
    height: var(--ep-header-height);
    display: flex;
    align-items: center;
    padding: 0 20px;
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.ep-logo i {
    font-size: 24px;
    margin-right: 10px;
}

.ep-menu {
    flex: 1;
    padding: 12px 0;
    overflow-y: auto;
}

.ep-menu-item {
    display: flex;
    align-items: center;
    padding: 12px 20px;
    color: rgba(255, 255, 255, 0.7);
    font-size: var(--ep-font-size-base);
    transition: all 0.3s;
    cursor: pointer;
}

.ep-menu-item i {
    width: 20px;
    margin-right: 10px;
    text-align: center;
}

.ep-menu-item:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

.ep-menu-item.is-active {
    color: #fff;
    background: rgba(255, 255, 255, 0.15);
    border-left: 3px solid #fff;
}

.ep-aside-footer {
    padding: 12px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.ep-main {
    flex: 1;
    margin-left: var(--ep-aside-width);
    display: flex;
    flex-direction: column;
}

.ep-header {
    height: var(--ep-header-height);
    background: var(--ep-bg-color);
    border-bottom: 1px solid var(--ep-border-color-lighter);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.ep-header-left {
    display: flex;
    align-items: center;
}

.ep-page-title {
    font-size: var(--ep-font-size-large);
    font-weight: 500;
    color: var(--ep-text-color-primary);
}

.ep-header-right {
    display: flex;
    align-items: center;
}

.ep-user-info {
    display: flex;
    align-items: center;
}

.ep-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ep-color-primary) 0%, #165dff 100%);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 500;
    margin-right: 10px;
}

.ep-user-detail {
    display: flex;
    flex-direction: column;
}

.ep-username {
    font-size: var(--ep-font-size-base);
    color: var(--ep-text-color-primary);
    font-weight: 500;
}

.ep-userid {
    font-size: var(--ep-font-size-extra-small);
    color: var(--ep-text-color-secondary);
}

.ep-content {
    flex: 1;
    padding: 24px;
}

.ep-row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -12px;
}

.ep-col-6 {
    width: 25%;
    padding: 0 12px;
}

.ep-col-4 {
    width: 33.333%;
    padding: 0 12px;
}

.ep-col-3 {
    width: 50%;
    padding: 0 12px;
}

.ep-card {
    background: var(--ep-bg-color);
    border-radius: var(--ep-border-radius-base);
    box-shadow: var(--ep-box-shadow-lighter);
    margin-bottom: 20px;
}

.ep-card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--ep-border-color-lighter);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.ep-card-title {
    font-size: var(--ep-font-size-medium);
    font-weight: 500;
    color: var(--ep-text-color-primary);
}

.ep-card-body {
    padding: 20px;
}

.ep-stat-card {
    display: flex;
    align-items: center;
    padding: 20px;
}

.ep-stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-right: 16px;
}

.ep-stat-icon--primary {
    background: var(--ep-color-primary-light-9);
    color: var(--ep-color-primary);
}

.ep-stat-icon--success {
    background: #f0f9eb;
    color: var(--ep-color-success);
}

.ep-stat-icon--warning {
    background: #fdf6ec;
    color: var(--ep-color-warning);
}

.ep-stat-icon--danger {
    background: #fef0f0;
    color: var(--ep-color-danger);
}

.ep-stat-icon--info {
    background: #f4f4f5;
    color: var(--ep-color-info);
}

.ep-stat-content {
    flex: 1;
}

.ep-stat-label {
    font-size: var(--ep-font-size-small);
    color: var(--ep-text-color-secondary);
    margin-bottom: 4px;
}

.ep-stat-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--ep-text-color-primary);
}

.ep-descriptions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.ep-descriptions-item {
    display: flex;
    align-items: center;
}

.ep-descriptions-label {
    width: 100px;
    color: var(--ep-text-color-secondary);
    font-size: var(--ep-font-size-base);
}

.ep-descriptions-value {
    flex: 1;
    color: var(--ep-text-color-primary);
    font-size: var(--ep-font-size-base);
}

.ep-tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: var(--ep-font-size-extra-small);
    border-radius: var(--ep-border-radius-small);
}

.ep-tag--success {
    background: #f0f9eb;
    color: var(--ep-color-success);
    border: 1px solid #e1f3d8;
}

.ep-tag--warning {
    background: #fdf6ec;
    color: var(--ep-color-warning);
    border: 1px solid #faecd8;
}

.ep-tag--danger {
    background: #fef0f0;
    color: var(--ep-color-danger);
    border: 1px solid #fde2e2;
}

.ep-tag--info {
    background: #f4f4f5;
    color: var(--ep-color-info);
    border: 1px solid #e9e9eb;
}

.ep-tag--primary {
    background: var(--ep-color-primary-light-9);
    color: var(--ep-color-primary);
    border: 1px solid var(--ep-color-primary-light-7);
}

.ep-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 8px 16px;
    font-size: var(--ep-font-size-base);
    border-radius: var(--ep-border-radius-base);
    border: 1px solid var(--ep-border-color);
    background: var(--ep-bg-color);
    color: var(--ep-text-color-regular);
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    gap: 6px;
}

.ep-button:hover {
    color: var(--ep-color-primary);
    border-color: var(--ep-color-primary-light-7);
    background: var(--ep-color-primary-light-9);
}

.ep-button--primary {
    background: var(--ep-color-primary);
    border-color: var(--ep-color-primary);
    color: #fff;
}

.ep-button--primary:hover {
    background: var(--ep-color-primary-light-3);
    border-color: var(--ep-color-primary-light-3);
    color: #fff;
}

.ep-button--success {
    background: var(--ep-color-success);
    border-color: var(--ep-color-success);
    color: #fff;
}

.ep-button--success:hover {
    background: #85ce61;
    border-color: #85ce61;
    color: #fff;
}

.ep-button--warning {
    background: var(--ep-color-warning);
    border-color: var(--ep-color-warning);
    color: #fff;
}

.ep-button--warning:hover {
    background: #ebb563;
    border-color: #ebb563;
    color: #fff;
}

.ep-button--danger {
    background: var(--ep-color-danger);
    border-color: var(--ep-color-danger);
    color: #fff;
}

.ep-button--danger:hover {
    background: #f78989;
    border-color: #f78989;
    color: #fff;
}

.ep-button--default {
    background: var(--ep-bg-color);
    border-color: var(--ep-border-color);
    color: var(--ep-text-color-regular);
}

.ep-button--small {
    padding: 6px 12px;
    font-size: var(--ep-font-size-small);
}

.ep-button--large {
    padding: 12px 24px;
    font-size: var(--ep-font-size-medium);
}

.ep-button--block {
    width: 100%;
}

.ep-button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.ep-upgrade-card {
    background: linear-gradient(135deg, #165dff 0%, #409eff 100%);
    color: #fff;
}

.ep-upgrade-content {
    display: flex;
    align-items: center;
    padding: 24px;
}

.ep-upgrade-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-right: 20px;
}

.ep-upgrade-text {
    flex: 1;
}

.ep-upgrade-text h3 {
    font-size: 18px;
    margin-bottom: 4px;
}

.ep-upgrade-text p {
    font-size: var(--ep-font-size-small);
    opacity: 0.9;
}

.ep-upgrade-card .ep-button--primary {
    background: #fff;
    color: var(--ep-color-primary);
    border-color: #fff;
}

.ep-upgrade-card .ep-button--primary:hover {
    background: rgba(255, 255, 255, 0.9);
}

.ep-balance-bar {
    background: var(--ep-bg-color);
    border-radius: var(--ep-border-radius-base);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    box-shadow: var(--ep-box-shadow-lighter);
}

.ep-balance-info {
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.ep-balance-label {
    color: var(--ep-text-color-secondary);
    font-size: var(--ep-font-size-base);
}

.ep-balance-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--ep-color-primary);
}

.ep-alert {
    padding: 12px 16px;
    border-radius: var(--ep-border-radius-base);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
}

.ep-alert--info {
    background: var(--ep-color-primary-light-9);
    color: var(--ep-color-primary);
}

.ep-alert--warning {
    background: #fdf6ec;
    color: var(--ep-color-warning);
}

.ep-alert--success {
    background: #f0f9eb;
    color: var(--ep-color-success);
}

.ep-alert--danger {
    background: #fef0f0;
    color: var(--ep-color-danger);
}

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

.ep-package-card {
    background: var(--ep-bg-color);
    border-radius: 8px;
    padding: 24px;
    box-shadow: var(--ep-box-shadow-lighter);
    position: relative;
    transition: all 0.3s;
    border: 2px solid transparent;
}

.ep-package-card:hover {
    border-color: var(--ep-color-primary);
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.ep-package-badge {
    position: absolute;
    top: -8px;
    right: 20px;
    background: var(--ep-color-danger);
    color: #fff;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: var(--ep-font-size-extra-small);
}

.ep-package-header {
    text-align: center;
    margin-bottom: 16px;
}

.ep-package-name {
    font-size: var(--ep-font-size-large);
    font-weight: 600;
    color: var(--ep-text-color-primary);
    margin-bottom: 4px;
}

.ep-package-duration {
    font-size: var(--ep-font-size-small);
    color: var(--ep-text-color-secondary);
}

.ep-package-price {
    text-align: center;
    padding: 16px 0;
    border-bottom: 1px solid var(--ep-border-color-lighter);
    margin-bottom: 16px;
}

.ep-price-current {
    font-size: 32px;
    font-weight: 700;
    color: var(--ep-color-primary);
}

.ep-price-original {
    font-size: var(--ep-font-size-base);
    color: var(--ep-text-color-placeholder);
    text-decoration: line-through;
    margin-left: 8px;
}

.ep-package-features {
    margin-bottom: 20px;
}

.ep-feature-item {
    display: flex;
    align-items: center;
    padding: 8px 0;
    color: var(--ep-text-color-regular);
    font-size: var(--ep-font-size-small);
}

.ep-feature-item i {
    color: var(--ep-color-success);
    margin-right: 8px;
    width: 16px;
}

.ep-empty {
    padding: 60px 20px;
    text-align: center;
}

.ep-empty i {
    font-size: 48px;
    color: var(--ep-text-color-placeholder);
    margin-bottom: 16px;
}

.ep-empty p {
    font-size: var(--ep-font-size-medium);
    color: var(--ep-text-color-secondary);
    margin-bottom: 8px;
}

.ep-empty span {
    font-size: var(--ep-font-size-small);
    color: var(--ep-text-color-placeholder);
}

.ep-table {
    width: 100%;
    border-collapse: collapse;
}

.ep-table th,
.ep-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--ep-border-color-lighter);
}

.ep-table th {
    background: #fafafa;
    color: var(--ep-text-color-secondary);
    font-weight: 500;
    font-size: var(--ep-font-size-small);
}

.ep-table td {
    color: var(--ep-text-color-regular);
    font-size: var(--ep-font-size-base);
}

.ep-table tr:hover td {
    background: #fafafa;
}

.ep-table code {
    background: #f5f5f5;
    padding: 2px 6px;
    border-radius: 3px;
    font-family: monospace;
    font-size: var(--ep-font-size-small);
}

@media (max-width: 1200px) {
    .ep-col-6 {
        width: 50%;
    }
}

@media (max-width: 768px) {
    .ep-aside {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }
    
    .ep-aside.active {
        transform: translateX(0);
    }
    
    .ep-main {
        margin-left: 0;
    }
    
    .ep-col-6,
    .ep-col-4,
    .ep-col-3 {
        width: 100%;
    }
    
    .ep-packages {
        grid-template-columns: 1fr;
    }
    
    .ep-descriptions {
        grid-template-columns: 1fr;
    }
}