/* roulang page: index */
:root {
            --bg-obsidian: #0D0F12;
            --bg-slate: #14171D;
            --bronze-gold: #C5A880;
            --tactical-amber: #D97736;
            --tactical-green: #10B981;
            --tactical-red: #EF4444;
            --text-cold-white: #F9FAFB;
            --text-fog-gray: #9CA3AF;
        }

        body {
            background-color: var(--bg-obsidian);
            color: var(--text-cold-white);
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            overflow-x: hidden;
        }

        /* 战术网格背景 */
        .tactical-grid-bg {
            background-image: linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
                              linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
            background-size: 40px 40px;
        }

        /* 极简发光卡片边框 */
        .tactical-card {
            background-color: #14171D;
            border: 1px solid #232936;
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }
        .tactical-card:hover {
            border-color: rgba(197, 168, 128, 0.6);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.6), 0 0 15px rgba(197, 168, 128, 0.15);
            transform: translateY(-2px);
        }

        /* 按钮悬停与交互 */
        .btn-bronze {
            background: linear-gradient(135deg, #C5A880 0%, #A88659 100%);
            color: #0D0F12;
            font-weight: 600;
            transition: all 0.25s ease;
        }
        .btn-bronze:hover {
            background: linear-gradient(135deg, #D4B994 0%, #BFA071 100%);
            box-shadow: 0 0 20px rgba(197, 168, 128, 0.4);
            transform: translateY(-1px);
        }

        .btn-outline {
            border: 1px solid #323A4A;
            color: #F9FAFB;
            transition: all 0.25s ease;
        }
        .btn-outline:hover {
            border-color: #C5A880;
            color: #C5A880;
            background-color: rgba(197, 168, 128, 0.05);
        }

        /* 自定义滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0D0F12;
        }
        ::-webkit-scrollbar-thumb {
            background: #232936;
            border-radius: 4px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #C5A880;
        }

        /* 手风琴开关动效 */
        details summary::-webkit-details-marker {
            display: none;
        }
        details[open] summary svg {
            transform: rotate(180deg);
        }