:root {
    --primary-color: #409EFF;
    --primary-color-hover: #66b1ff;
    --primary-color-light: #ecf5ff;
    --primary-color-shadow: rgba(64, 158, 255, .20);
    --primary-color-shadow-hover: rgba(64, 158, 255, .28);

    --el-color-primary: var(--primary-color);
    --el-color-primary-light-3: var(--primary-color-hover);
    --el-color-primary-dark-2: var(--primary-color);

    --el-bg-color: var(--card-bg);
    --el-bg-color-overlay: var(--card-bg);
    --el-card-bg-color: var(--card-bg);
    --el-text-color-primary: var(--text-primary);
    --el-text-color-regular: var(--text-secondary);
    --el-border-color: var(--border-color);
    --el-border-color-light: var(--border-color-light);
    --el-fill-color-light: var(--hover-bg);

    --sidebar-bg: #001529;
    --sidebar-text: #c8d2dc;
    --sidebar-text-active: #ffffff;
    --sidebar-hover-bg: #0b2a4a;
    --sidebar-active-bg: var(--primary-color);

    --card-bg: #ffffff;
    --card-bg-secondary: #ffffff;
    --card-bg-dark: var(--card-bg);
    --upload-bg: #fafbfc;
    --upload-border: #d9e0ea;
    --bg-color: #f0f2f5;
    --page-bg: var(--bg-color);
    --text-primary: #303133;
    --text-secondary: #909399;
    --border-color: #e4e7ed;
    --border-color-light: #ebeef5;
    --input-bg: #ffffff;
    --hover-bg: #f5f7fa;
    --table-header-bg: #fafafa;
    --auth-bg-start: #e8f0fe;
    --auth-bg-end: #f5f7fa;
    --auth-deco-color: rgba(64, 158, 255, .10);
    --auth-card-shadow: 0 10px 30px rgba(15, 76, 129, .10);
    --auth-card-shadow-hover: 0 14px 36px rgba(15, 76, 129, .14);

    --success-color: #67C23A;
    --success-color-light: #f0f9eb;
    --warning-color: #E6A23C;
    --warning-color-light: #fdf6ec;
    --danger-color: #F56C6C;
    --danger-color-light: #fef0f0;
    --purple-color: #9b59b6;
    --white: #ffffff;
    --weather-sky-start: #4facfe;
    --weather-sky-end: #00c6fb;
    --weather-sunny-start: #f9a825;
    --weather-sunny-end: #ff8f00;
    --weather-overcast-start: #7f9bb3;
    --weather-overcast-end: #a8c0d6;
    --weather-rain-start: #3a7bd5;
    --weather-rain-end: #5f9fd8;
    --weather-snow-start: #83a4d4;
    --weather-snow-end: #b6fbff;

    --mask-color: #000000;
    --profile-cover-start: #0f4c81;
    --profile-cover-mid: #4facfe;
    --profile-cover-end: #43e97b;
    --course-green-light: #85ce61;
    --course-orange-light: #ffb84d;
    --course-purple-light: #b37bcb;
    --course-red-light: #ff7875;
    --course-teal: #1abc9c;
    --course-teal-light: #48c9b0;

    --shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
    --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.1);

    /* 兼容子页面已有变量名，统一指向全局主题变量。 */
    --primary: var(--primary-color);
    --primary-light: var(--primary-color-light);
    --bg: var(--bg-color);
    --text: var(--text-primary);
    --text-sub: var(--text-secondary);
    --border: var(--border-color);
    --border-light: var(--border-color-light);
    --card-bg-2: var(--card-bg-secondary);
}

[data-theme="dark"] {
    --primary-color: #409EFF;
    --primary-color-hover: #66b1ff;
    --primary-color-light: #1f2d3d;

    --sidebar-bg: #0f1a2e;
    --sidebar-text: #a0a9b3;
    --sidebar-text-active: #ffffff;
    --sidebar-hover-bg: #18304c;

    --card-bg: #1e2638;
    --card-bg-secondary: #262f41;
    --card-bg-dark: #1e2638;
    --upload-bg: #171f2e;
    --upload-border: #9aa4b2;
    --success-color-light: #1e3524;
    --warning-color-light: #3a2f1f;
    --danger-color-light: #3a2024;
    --bg-color: #141923;
    --page-bg: var(--bg-color);
    --text-primary: #e6eaf0;
    --text-secondary: #8b95a7;
    --border-color: #3a4258;
    --border-color-light: #2a3244;
    --input-bg: #262f41;
    --hover-bg: #263047;
    --table-header-bg: #262f41;
    --auth-bg-start: #0f1724;
    --auth-bg-end: #141923;
    --auth-deco-color: rgba(64, 158, 255, .08);
    --auth-card-shadow: 0 10px 30px rgba(0, 0, 0, .28);
    --auth-card-shadow-hover: 0 14px 36px rgba(0, 0, 0, .36);

    --shadow: 0 1px 4px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.4);
}

html,
body {
    min-height: 100%;
}

body {
    min-height: 100vh;
}

.page-main {
    flex: 1 0 auto;
    width: 100%;
    min-height: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 16px 0;
}

.site-footer {
    flex-shrink: 0;
    width: 100%;
    margin-top: auto;
    padding: 10px 16px;
    border-top: none;
    background: var(--page-bg);
    color: var(--text-secondary);
    text-align: center;
    font-size: 11px;
    line-height: 1.6;
    font-weight: 400;
}

.site-footer .footer-copy {
    width: 100%;
    text-align: center;
    color: inherit;
    font-size: inherit;
    font-weight: inherit;
    line-height: inherit;
}

body.auth-page {
    background:
        radial-gradient(circle at 14% 18%, var(--auth-deco-color), transparent 30%),
        radial-gradient(circle at 86% 78%, var(--auth-deco-color), transparent 34%),
        linear-gradient(135deg, var(--auth-bg-start) 0%, var(--auth-bg-end) 100%);
    background-attachment: fixed;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.auth-page .page-main {
    padding: 28px 16px;
}

.auth-deco {
    position: absolute;
    border-radius: 50%;
    background: var(--auth-deco-color);
    filter: blur(2px);
    pointer-events: none;
}

.auth-deco.d1 {
    width: 180px;
    height: 180px;
    top: 10%;
    left: 7%;
}

.auth-deco.d2 {
    width: 120px;
    height: 120px;
    right: 12%;
    bottom: 16%;
}

.auth-deco.d3 {
    width: 72px;
    height: 72px;
    top: 24%;
    right: 24%;
}

.auth-card {
    position: relative;
    z-index: 1;
    width: 460px;
    max-width: 100%;
    padding: 40px 44px;
    background: var(--card-bg);
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    box-shadow: var(--auth-card-shadow);
    transition: box-shadow .2s ease;
}

.auth-card:hover {
    box-shadow: var(--auth-card-shadow-hover);
}

.auth-card h2 {
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 24px;
    text-align: center;
}

.auth-card .sub {
    margin-bottom: 24px;
    color: var(--text-secondary);
    font-size: 13px;
    text-align: center;
}

@media (max-width: 600px) {
    .auth-page .page-main {
        padding: 20px 14px;
    }

    .auth-card {
        padding: 30px 22px;
    }
}

.inline-captcha {
    margin-bottom: 18px;
    padding: 12px;
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    background: var(--hover-bg);
}

.captcha-submit {
    width: 100%;
    margin-top: 10px;
}

.system-card {
    border: 1px solid var(--border-color-light);
    border-radius: 8px;
    background: var(--card-bg);
    box-shadow: var(--shadow);
}

.system-card .el-card__body {
    padding: 22px 24px;
}

body.auth-page .site-footer {
    background: transparent;
}
@media (max-width: 768px) {
    .page-wrap,
    .competition-page,
    .analysis-page {
        width: 100% !important;
        max-width: none !important;
        padding: 12px !important;
    }

    .plan-header,
    .analysis-header,
    .card-heading,
    .toolbar,
    .filter-bar {
        flex-wrap: wrap !important;
        gap: 10px !important;
    }

    .kanban,
    .stats-row,
    .metric-grid,
    .charts-pies,
    .charts-duo,
    .summary-sections,
    .result-summary,
    .info-stats {
        grid-template-columns: 1fr !important;
    }

    .filter-keyword,
    .filter-select,
    .filter-select-small,
    .search-input {
        width: 100% !important;
        min-width: 0 !important;
    }

    .filter-bar .el-button,
    .toolbar .el-button,
    .plan-header .el-button,
    .analysis-header .el-button {
        min-height: 36px;
    }

    .el-button {
        min-height: 32px;
    }

    .el-input__wrapper,
    .el-select__wrapper {
        min-height: 40px;
    }

    .pagination-wrap {
        justify-content: center !important;
        overflow-x: auto;
        padding-bottom: 4px;
    }

    .pagination-wrap .el-pagination {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        row-gap: 8px;
    }

    .table-scroll {
        width: 100%;
        overflow-x: auto;
        overscroll-behavior-x: contain;
    }

    .table-scroll .el-table {
        min-width: 960px;
    }

    .card-heading-icon,
    .header-icon,
    .auth-deco,
    .floating {
        display: none !important;
    }

    .page-wrap h2,
    .competition-page h2,
    .analysis-page h2 {
        font-size: 18px !important;
    }

    .el-dialog {
        width: calc(100vw - 24px) !important;
        margin-top: 8vh !important;
    }
}