/* 主题变量：冒险（Kenney UI Adventure，CC0） */
html[data-theme="adventure"] {
    --page-bg: linear-gradient(135deg, #f6ead0 0%, #eed9ac 55%, #e2c68e 100%);
    --panel-img: url('../assets/kenney/panel_brown.png');
    --panel-dark-img: url('../assets/kenney/panel_brown_dark.png');
    --btn-img: url('../assets/kenney/button_brown.png');
    --btn-accent-img: url('../assets/kenney/button_red.png');
    --panel-slice: 22;
    --btn-slice: 16;
    --accent-slice: 16;
    --txt: #5a3d1e;
    --txt2: #6b4a26;
    --ok: #2f7d32;
    --overlay: rgba(58, 38, 15, 0.42);
    --shadow: rgba(90, 61, 30, 0.28);
    --bar-track: rgba(90, 61, 30, 0.18);
    --bar-a: #d9a054;
    --bar-b: #b56a2c;
    --switch-on: #cf8a3c;
    --input-bg: rgba(255, 252, 244, 0.85);
    --board-fill: rgba(248, 236, 208, 0.55);
    --board-ring: #8a5a2b;
    --board-grid: rgba(138, 90, 43, 0.3);
    --board-glow: rgba(217, 160, 84, 0.6);
}