/* roulang page: index */
:root {
            --primary: #0F52BA;
            --accent: #F97316;
            --dark: #0B192C;
            --slate-text: #1E293B;
            --muted-text: #64748B;
            --border-line: #E2E8F0;
            --bg-light: #F8FAFC;
        }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            color: var(--slate-text);
            background-color: #FFFFFF;
            overflow-x: hidden;
        }
        .hero-diagonal-skew {
            clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%);
        }
        .drawer-overlay {
            transition: opacity 0.3s ease, visibility 0.3s ease;
        }
        .drawer-content {
            transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .drawer-hidden .drawer-overlay {
            opacity: 0;
            visibility: hidden;
            pointer-events: none;
        }
        .drawer-hidden .drawer-content {
            transform: translateX(100%);
        }
        .hero-clip-frame {
            transform: perspective(1000px) rotateY(-4deg) rotateX(2deg);
            transition: transform 0.5s ease;
        }
        .hero-clip-frame:hover {
            transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
        }