:root {
    color-scheme: light;
    --font-sans: Arial, "Apple SD Gothic Neo", "Malgun Gothic", sans-serif;
    --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", Consolas, "Courier New", monospace;

    --bg: #f6f7f9;
    --surface: #ffffff;
    --text: #20242a;
    --muted: #66707c;
    --line: #dfe4ea;
    --accent: #16784f;
    --accent-dark: #0f5f3e;
    --danger: #b42318;
    --off-bg: #f1f3f5;
    --subtle-bg: #f7f9fb;
    --ok-bg: #e9f7ef;
    --table-head-bg: #fbfcfd;
    --control-bg: #ffffff;
    --shadow-soft: 0 10px 30px rgba(25, 32, 41, 0.08);
    --shadow-card: 0 10px 25px rgba(0, 0, 0, 0.05);
    --shadow-switch: 0 1px 2px rgba(0, 0, 0, 0.18);
    --preview-bg: linear-gradient(135deg, #29313f, #465163);

    --guide-bg: #1c1c1e;
    --guide-surface: #2c2c2e;
    --guide-text: #f2f2f7;
    --guide-muted: #c7c7cc;
    --guide-line: #444444;
    --guide-code-bg: #3a3a3c;
    --guide-accent: #00c73c;
    --guide-accent-dark: #00a330;
    --guide-accent-bright: #31e86d;
    --guide-warning: #ffd60a;
    --guide-danger: #ff453a;
    --guide-accent-bg: rgba(0, 199, 60, 0.1);
    --guide-accent-bg-strong: rgba(0, 199, 60, 0.12);
    --guide-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}