/* roulang page: index */
:root {
            --bg-base: #0B1120;
            --bg-panel: #0F172A;
            --bg-card: #1E293B;
            --color-primary: #0E7490;
            --color-cyan: #06B6D4;
            --color-green: #10B981;
            --color-gold: #D97706;
            --border-line: #334155;
            --text-main: #F8FAFC;
            --text-secondary: #94A3B8;
        }

        /* 基础重置 */
        *, *::before, *::after {
            box-sizing: border-box;
        }
        body {
            background-color: var(--bg-base);
            color: var(--text-main);
            font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
            overflow-x: hidden;
            line-height: 1.6;
        }

        /* 芯片点阵与微引脚纹理 */
        .bg-grid-circuit {
            background-image: radial-gradient(rgba(14, 116, 144, 0.18) 1px, transparent 1px),
                              linear-gradient(to right, rgba(51, 65, 85, 0.15) 1px, transparent 1px);
            background-size: 24px 24px, 48px 48px;
        }
        .bg-dot-pattern {
            background-image: radial-gradient(rgba(148, 163, 184, 0.15) 1px, transparent 1px);
            background-size: 16px 16px;
        }

        /* 工业硬核金属切角与细线边框 */
        .industrial-border {
            border: 1px solid var(--border-line);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.35);
        }
        .industrial-border-cyan {
            border: 1px solid rgba(6, 182, 212, 0.35);
        }

        /* 工业优惠券 / 样片特惠券切角卡券样式 */
        .coupon-ticket {
            position: relative;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            border: 1px solid #38BDF8;
            border-radius: 4px;
        }
        .coupon-ticket::before, .coupon-ticket::after {
            content: '';
            position: absolute;
            top: 50%;
            transform: translateY(-50%);
            width: 14px;
            height: 14px;
            background-color: #0B1120;
            border: 1px solid #38BDF8;
            border-radius: 50%;
            z-index: 2;
        }
        .coupon-ticket::before {
            left: -8px;
            border-left-color: transparent;
        }
        .coupon-ticket::after {
            right: -8px;
            border-right-color: transparent;
        }

        /* 数据指示脉冲动画 */
        @keyframes pulse-ring {
            0% { transform: scale(0.95); opacity: 0.8; }
            50% { transform: scale(1.15); opacity: 0.3; }
            100% { transform: scale(0.95); opacity: 0.8; }
        }
        .chip-pulse {
            animation: pulse-ring 2.5s infinite ease-in-out;
        }

        /* 交互滚动条 */
        ::-webkit-scrollbar {
            width: 8px;
            height: 8px;
        }
        ::-webkit-scrollbar-track {
            background: #0B1120;
        }
        ::-webkit-scrollbar-thumb {
            background: #334155;
            border-radius: 2px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #0E7490;
        }

        /* 按钮与交互过渡 */
        .btn-industrial {
            transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .btn-industrial:hover {
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(6, 182, 212, 0.25);
        }