/* roulang page: index */
:root {
            --primary: #FF5500;
            --primary-dark: #E04B00;
            --secondary: #0F172A;
            --accent: #10B981;
            --bg-light: #F8FAFC;
            --bg-dark: #0B0F19;
            --text-main: #1E293B;
            --text-muted: #64748B;
            --border-color: #E2E8F0;
        }

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

        body {
            color: var(--text-main);
            background-color: var(--bg-light);
            overflow-x: hidden;
        }

        .hero-bento-card {
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .hero-bento-card::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.4) 0%, rgba(15, 23, 42, 0.9) 100%);
            border-radius: inherit;
        }

        .glass-nav {
            background: rgba(255, 255, 255, 0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .card-hover-effect {
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .card-hover-effect:hover {
            transform: translateY(-6px);
            box-shadow: 0 20px 30px -10px rgba(255, 85, 0, 0.12);
        }

        .badge-pulse {
            animation: pulse-slow 2.5s infinite;
        }

        @keyframes pulse-slow {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.85; transform: scale(1.03); }
        }