/* 深海蓝（默认）- 科技感、稳重 */
:root {
    --deep-blue: #0a1f3f;
    --dark-blue: #0d2b5e;
    --mid-blue: #1a3f7a;
    --tech-blue: #0066ff;
    --accent-blue: #1e90ff;
    --light-blue: #3aa5ff;
    --cyan-accent: #00d4ff;
    --gradient-hero: linear-gradient(135deg, #0a1f3f 0%, #0d2b5e 30%, #1a3f7a 60%, #0a1f3f 100%);
    --gradient-btn: linear-gradient(135deg, #0066ff 0%, #1e90ff 100%);
}