/* roulang page: index */
:root {
            --color-primary: #1A1D20;
            --color-accent: #C5A880;
            --color-accent-hover: #B5966B;
            --color-bg-light: #F7F8FA;
            --color-text-dark: #111827;
            --color-text-muted: #4B5563;
            --radius-box: 12px;
            --shadow-soft: 0 10px 30px -5px rgba(0, 0, 0, 0.06);
            --shadow-hover: 0 20px 35px -5px rgba(0, 0, 0, 0.12);
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            background-color: var(--color-bg-light);
            color: var(--color-text-dark);
            overflow-x: hidden;
        }

        .btn-gold {
            background-color: var(--color-accent);
            color: #1A1D20;
            font-weight: 600;
            transition: all 0.25s ease-in-out;
        }
        .btn-gold:hover {
            background-color: var(--color-accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(197, 168, 128, 0.35);
        }

        .btn-ghost-dark {
            border: 1.5px solid rgba(255, 255, 255, 0.4);
            color: #FFFFFF;
            font-weight: 500;
            transition: all 0.25s ease-in-out;
        }
        .btn-ghost-dark:hover {
            background-color: #FFFFFF;
            color: #1A1D20;
            border-color: #FFFFFF;
            transform: translateY(-2px);
        }

        .accordion-item .accordion-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1), padding 0.35s ease;
        }
        .accordion-item.active .accordion-content {
            max-height: 350px;
            padding-top: 0.75rem;
            padding-bottom: 1.25rem;
        }
        .accordion-item.active .chevron-icon {
            transform: rotate(180deg);
            color: var(--color-accent);
        }
        .accordion-item.active {
            border-color: var(--color-accent);
            background-color: #FFFFFF;
        }

        .mobile-bar {
            box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
        }