@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800;900&display=swap');

        :root {
            --bg-deep: #090d14;
            --bg-panel: #111827;
            --border-subtle: rgba(255, 255, 255, 0.06);
            --border-glow: rgba(139, 92, 246, 0.35);
            --text-primary: #f1f5f9;
            --text-secondary: #94a3b8;
            --accent-indigo: #818cf8;
            --accent-purple: #a78bfa;
            --accent-pink: #f472b6;
            --accent-emerald: #34d399;
            --accent-amber: #fbbf24;
            --accent-rose: #fb7185;
            --accent-sky: #38bdf8;
            --glow-indigo: rgba(99, 102, 241, 0.35);
            --glow-purple: rgba(168, 85, 247, 0.3);
            --radius-xl: 1.75rem;
            --radius-2xl: 2rem;
            --transition-smooth: all 0.4s cubic-bezier(0.22, 1, 0.36, 1);
        }

        * { margin:0; padding:0; box-sizing:border-box; }
        body {
            font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-deep);
            color: var(--text-primary);
            overflow-x: hidden;
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .hero-glow {
            position: fixed;
            width: 900px; height: 900px;
            background: radial-gradient(circle, rgba(99,102,241,0.2) 0%, rgba(168,85,247,0.08) 35%, rgba(9,13,20,0) 70%);
            top: -280px; left: 50%; transform: translateX(-50%);
            z-index: 0; pointer-events: none;
        }

        .glass-panel {
            background: rgba(17,24,39,0.7);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 55px rgba(0,0,0,0.45);
            transition: var(--transition-smooth);
        }
        .glass-panel:hover {
            transform: translateY(-6px);
            border-color: var(--border-glow);
            box-shadow: 0 32px 64px rgba(99,102,241,0.22);
        }

        .gradient-text {
            background: linear-gradient(135deg, #a5b4fc 0%, #c084fc 45%, #f472b6 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gradient-text-warm {
            background: linear-gradient(135deg, #fbbf24 0%, #f472b6 50%, #fb7185 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .gradient-button {
            background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
            box-shadow: 0 0 28px rgba(99,102,241,0.45);
            transition: var(--transition-smooth);
            display: inline-flex; align-items: center; justify-content: center;
            cursor: pointer; text-decoration: none; border: none;
            font-weight: 700; letter-spacing: 0.01em;
        }
        .gradient-button:hover {
            box-shadow: 0 0 42px rgba(168,85,247,0.65);
            transform: translateY(-3px);
            background: linear-gradient(135deg, #7574f9 0%, #b366f8 100%);
        }

        /* 计时器步骤卡片 */
        .time-step {
            display: flex; align-items: flex-start; gap: 1rem;
            padding: 1.25rem; border-radius: 1.25rem;
            background: rgba(17,24,39,0.6);
            border: 1px solid rgba(255,255,255,0.04);
            transition: var(--transition-smooth);
        }
        .time-step:hover {
            border-color: var(--border-glow);
            background: rgba(17,24,39,0.8);
        }
        .time-badge {
            flex-shrink: 0;
            width: 48px; height: 48px;
            border-radius: 14px;
            background: rgba(99,102,241,0.15);
            display: flex; flex-direction: column; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.1rem; color: var(--accent-indigo);
            border: 1px solid rgba(129,140,248,0.3);
        }
        .time-badge span {
            font-size: 0.6rem; font-weight: 600; opacity: 0.8; margin-top: 2px;
        }

        /* 连接状态模拟卡片 */
        .connect-card {
            background: rgba(17,24,39,0.8);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-2xl);
            padding: 1.5rem;
            text-align: center;
            transition: var(--transition-smooth);
        }
        .connect-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 16px 40px rgba(0,0,0,0.5);
        }
        .pulse-dot {
            display: inline-block; width: 12px; height: 12px;
            border-radius: 50%; background: #34d399;
            box-shadow: 0 0 15px #34d399;
            animation: pulse 1.8s infinite;
        }
        @keyframes pulse {
            0%,100% { opacity:1; transform:scale(1); }
            50% { opacity:0.6; transform:scale(1.3); }
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .hero-glow { width:500px; height:500px; top:-160px; }
        }