/* 5526 共享主题 — 白天/黑夜模式 */
:root {
    --bg-page: #0f0f1a;
    --bg-canvas: #1a1a2e;
    --border-color: rgba(255,255,255,0.08);
    --btn-bg: rgba(0,0,0,0.5);
    --btn-color: rgba(255,255,255,0.5);
    --btn-border: rgba(255,255,255,0.1);
    --btn-hover-bg: rgba(0,0,0,0.7);
    --btn-hover-color: rgba(255,255,255,0.8);
    --status-color: rgba(255,255,255,0.25);
    --info-color: rgba(255,255,255,0.3);
    --text: #e0e0e0;
    --text-muted: rgba(255,255,255,0.4);
    --card-title: #fff;
    --card-bg: rgba(255,255,255,0.04);
    --card-border: rgba(255,255,255,0.08);
    --card-hover-bg: rgba(255,255,255,0.06);
    --card-hover-border: rgba(255,255,255,0.15);
}
:root.light {
    --bg-page: #f5f0e8;
    --bg-canvas: #e8e4db;
    --border-color: rgba(0,0,0,0.08);
    --btn-bg: rgba(255,255,255,0.7);
    --btn-color: rgba(0,0,0,0.4);
    --btn-border: rgba(0,0,0,0.08);
    --btn-hover-bg: rgba(255,255,255,0.85);
    --btn-hover-color: rgba(0,0,0,0.6);
    --status-color: rgba(0,0,0,0.2);
    --info-color: rgba(0,0,0,0.25);
    --text: #2c2c2c;
    --text-muted: rgba(0,0,0,0.35);
    --card-title: #1a1a1a;
    --card-bg: rgba(255,255,255,0.7);
    --card-border: rgba(0,0,0,0.07);
    --card-hover-bg: rgba(255,255,255,0.9);
    --card-hover-border: rgba(0,0,0,0.12);
}