/* roulang page: index */
:root {
            --bg-deep: #0a0f1d;
            --bg-card: rgba(30, 41, 59, 0.65);
            --border-glass: rgba(255, 255, 255, 0.08);
            --cyan-primary: #00f2fe;
            --blue-gradient: linear-gradient(135deg, #00f2fe 0%, #4facfe 100%);
            --glow-shadow: 0 0 24px rgba(0, 242, 254, 0.35);
        }

        html {
            scroll-behavior: smooth;
            background-color: var(--bg-deep);
            color: #f8fafc;
            font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
        }

        body {
            overflow-x: hidden;
            background: radial-gradient(circle at 50% 0%, #152547 0%, #0a0f1d 75%);
        }

        /* 玻璃拟态卡片与发光边框 */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-glass);
            box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5);
            transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
        }

        .glass-card:hover {
            border-color: rgba(0, 242, 254, 0.3);
            transform: translateY(-3px);
            box-shadow: 0 25px 45px -12px rgba(0, 242, 254, 0.15);
        }

        .btn-gradient-glow {
            background: var(--blue-gradient);
            box-shadow: var(--glow-shadow);
            transition: all 0.25s ease;
        }

        .btn-gradient-glow:hover {
            box-shadow: 0 0 32px rgba(0, 242, 254, 0.55);
            transform: translateY(-2px);
        }

        .btn-glass {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(8px);
            transition: all 0.25s ease;
        }

        .btn-glass:hover {
            background: rgba(0, 242, 254, 0.1);
            border-color: rgba(0, 242, 254, 0.4);
            color: #00f2fe;
        }

        .text-gradient {
            background: linear-gradient(135deg, #ffffff 30%, #00f2fe 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        /* 众筹环形进度微动动画 */
        @keyframes pulseGlow {
            0%, 100% { opacity: 0.6; transform: scale(1); }
            50% { opacity: 1; transform: scale(1.02); }
        }
        .pulse-light {
            animation: pulseGlow 4s infinite ease-in-out;
        }

        /* 手风琴开关样式 */
        details summary::-webkit-details-marker {
            display: none;
        }