/* roulang page: index */
:root {
            --primary: #0284C7;
            --primary-light: #0EA5E9;
            --primary-accent: #10B981;
            --slate-deep: #0F172A;
            --bg-canvas: #F8FAFC;
            --radius-lg: 20px;
        }

        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        body {
            background-color: var(--bg-canvas);
            color: #334155;
            overflow-x: hidden;
        }

        .clip-hero-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% 88%, 0 100%);
        }

        .card-hover-effect {
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.3s ease, border-color 0.3s ease;
        }
        .card-hover-effect:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 35px -10px rgba(15, 23, 42, 0.08);
            border-color: #BAE6FD;
        }

        .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease-out, opacity 0.3s ease;
            opacity: 0;
        }
        .accordion-content.active {
            max-height: 400px;
            opacity: 1;
        }

        .custom-scrollbar::-webkit-scrollbar {
            height: 6px;
        }
        .custom-scrollbar::-webkit-scrollbar-thumb {
            background-color: #CBD5E1;
            border-radius: 9999px;
        }