/* roulang page: index */
:root {
            --color-primary: #2563EB;
            --color-primary-hover: #1D4ED8;
            --color-bg-dark: #0B0F17;
            --color-text-main: #0F172A;
            --color-text-muted: #64748B;
        }
        body {
            font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Inter', sans-serif;
            -webkit-font-smoothing: antialiased;
        }
        .text-gradient {
            background: linear-gradient(135deg, #2563EB 0%, #60A5FA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-bg {
            background: linear-gradient(to right, rgba(11, 15, 23, 0.94), rgba(17, 24, 39, 0.82)), url('/assets/images/1ca9dc6c6c657bce.jpg');
            background-size: cover;
            background-position: center;
        }
        .dark-section-bg {
            background: linear-gradient(to bottom, #0B0F17, #111827);
        }
        .transition-smooth {
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }