html[data-theme="light"] {
    --page-bg: #f4f7fb;
    --surface-primary: rgba(255, 255, 255, 0.78);
    --surface-secondary: rgba(246, 249, 253, 0.92);
    --surface-elevated: rgba(255, 255, 255, 0.96);
    --text-primary: #142033;
    --text-secondary: #516079;
    --text-muted: #71819d;
    --line-soft: rgba(110, 136, 173, 0.18);
    --line-strong: rgba(74, 109, 161, 0.28);
    --accent: #2a7de1;
    --accent-contrast: #ffffff;
    --brand-surface: linear-gradient(135deg, #2a7de1, #58a2ff);
    --brand-text: #ffffff;
    --ambient-one: rgba(124, 177, 255, 0.26);
    --ambient-two: rgba(153, 198, 255, 0.18);
    --ambient-three: rgba(196, 221, 255, 0.3);
}