/* roulang page: index */
:root {
            --primary: #00E599;
            --secondary: #FF5500;
            --bg-dark: #0D1117;
            --bg-card: rgba(22, 27, 34, 0.85);
            --border-soft: rgba(255, 255, 255, 0.08);
            --text-main: #F0F6FC;
            --text-muted: #8B949E;
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-dark);
            color: var(--text-main);
        }

        body {
            font-family: 'PingFang SC', "Microsoft YaHei", "HarmonyOS Sans SC", sans-serif;
            background-color: #0D1117;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

        .clip-diagonal {
            clip-path: polygon(0 0, 100% 0, 100% calc(100% - 3.5vw), 0 100%);
        }

        .clip-diagonal-rev {
            clip-path: polygon(0 3.5vw, 100% 0, 100% 100%, 0 calc(100% - 3.5vw));
        }

        .glow-card {
            background: var(--bg-card);
            border: 1px solid var(--border-soft);
            box-shadow: 0 0 0 1px rgba(0, 229, 153, 0.05), 0 8px 24px rgba(0, 0, 0, 0.4);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .glow-card:hover {
            transform: translateY(-3px);
            border-color: rgba(0, 229, 153, 0.35);
            box-shadow: 0 0 0 1px rgba(0, 229, 153, 0.2), 0 12px 28px rgba(0, 229, 153, 0.12);
        }

        .glow-btn {
            box-shadow: 0 0 18px rgba(255, 85, 0, 0.4);
            transition: all 0.2s ease-in-out;
        }
        .glow-btn:hover {
            box-shadow: 0 0 28px rgba(255, 85, 0, 0.7);
            transform: translateY(-2px);
        }

        .code-pill {
            background: rgba(0, 229, 153, 0.12);
            color: #00E599;
            border: 1px solid rgba(0, 229, 153, 0.25);
        }

        .bg-grid-tech {
            background-image: radial-gradient(rgba(0, 229, 153, 0.08) 1px, transparent 1px);
            background-size: 24px 24px;
        }

        .ticket-edge {
            background: radial-gradient(circle at left, transparent 10px, #161B22 11px),
                        radial-gradient(circle at right, transparent 10px, #161B22 11px);
            background-size: 100% 100%;
        }