/* roulang page: index */
:root {
            --primary: #1E1035;
            --primary-dark: #0D0B18;
            --accent-gold: #E5A93C;
            --accent-cyan: #00D2BA;
            --bg-soft: #F8F9FC;
            --text-main: #232733;
            --text-muted: #64748B;
            --border-light: #E2E8F0;
        }
        html {
            scroll-behavior: smooth;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
        }
        body {
            color: var(--text-main);
            background-color: #ffffff;
            line-height: 1.8;
            overflow-x: hidden;
        }
        .text-balance {
            text-wrap: balance;
        }
        .hero-bg-overlay {
            background: linear-gradient(135deg, rgba(13, 11, 24, 0.94) 0%, rgba(30, 16, 53, 0.88) 100%);
        }
        .custom-glass {
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.15);
        }
        .card-hover-fx {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        .card-hover-fx:hover {
            transform: translateY(-4px);
            box-shadow: 0 20px 30px -10px rgba(30, 16, 53, 0.08);
        }
        .faq-content {
            transition: max-height 0.35s ease, opacity 0.3s ease;
        }