/* roulang page: index */
:root {
            --primary: #12a583;
            --primary-dark: #0b687f;
            --surface-bg: #f5faf8;
            --ink-main: #1d2633;
            --ink-muted: #6b7a90;
        }
        body {
            color: var(--ink-main);
            background-color: var(--surface-bg);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            text-rendering: optimizeLegibility;
            -webkit-font-smoothing: antialiased;
        }
        .text-gradient {
            background: linear-gradient(135deg, hsl(168, 80%, 36%) 0%, hsl(192, 85%, 28%) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-mask {
            background: linear-gradient(180deg, rgba(13, 27, 42, 0.85) 0%, rgba(11, 44, 49, 0.92) 100%);
        }