* { font-family: 'Inter', sans-serif; }

        body {
            background: radial-gradient(circle at 10% 30%, rgba(66, 153, 225, 0.15) 0%, transparent 30%),
                        radial-gradient(circle at 90% 70%, rgba(159, 122, 234, 0.12) 0%, transparent 35%),
                        linear-gradient(145deg, #f9fafc 0%, #f1f4f9 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            margin: 0;
            padding: 16px;
        }

        .glass-card {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            border: 1px solid rgba(255, 255, 255, 0.7);
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(255,255,255,0.6) inset;
        }

        .page-language-wrapper {
            display: flex;
            justify-content: center;
            margin-bottom: 16px;
            width: 100%;
        }

        .page-language-selector {
            display: inline-flex;
            gap: 6px;
            background: rgba(255, 255, 255, 0.7);
            backdrop-filter: blur(8px);
            padding: 6px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, 0.8);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
            margin: 0 auto;
        }

        .page-lang-btn {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: none;
            background: transparent;
            font-size: 18px;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #4a5568;
            font-weight: 500;
        }

        .page-lang-btn:hover {
            background: rgba(59, 130, 246, 0.1);
            transform: scale(1.1);
        }

        .page-lang-btn.active {
            background: #3b82f6;
            color: white;
            box-shadow: 0 4px 8px rgba(59, 130, 246, 0.3);
        }

        .app-btn {
            width: 100%;
            border: none;
            border-radius: 22px;
            padding: 16px 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .app-btn:hover {
            transform: translateY(-1px) scale(1.01);
        }

        .android-btn {
            background: linear-gradient(90deg, #2563eb 0%, #4f46e5 100%);
            color: white;
            box-shadow: 0 15px 30px rgba(59, 130, 246, 0.25);
        }

        .ios-btn {
            background: rgba(255, 255, 255, 0.85);
            color: #111827;
            border: 1px solid rgba(229, 231, 235, 0.95);
            box-shadow: 0 8px 18px rgba(15, 23, 42, 0.07);
        }

        .soft-note {
            background: rgba(255,255,255,0.68);
            border: 1px solid rgba(255,255,255,0.9);
            border-radius: 18px;
        }

        .modal-backdrop {
            position: fixed;
            inset: 0;
            background: rgba(15, 23, 42, 0.45);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            display: none;
            align-items: center;
            justify-content: center;
            padding: 16px;
            z-index: 1000;
        }

        .modal-backdrop.active {
            display: flex;
        }

        .modal-card {
            width: 100%;
            max-width: 460px;
            border-radius: 28px;
            padding: 24px;
        }

        .step-badge {
            width: 34px;
            height: 34px;
            min-width: 34px;
            border-radius: 999px;
            background: linear-gradient(90deg, #2563eb 0%, #4f46e5 100%);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            box-shadow: 0 8px 16px rgba(59,130,246,0.24);
        }

        .toast {
            position: fixed;
            left: 50%;
            bottom: 18px;
            transform: translateX(-50%) translateY(20px);
            opacity: 0;
            pointer-events: none;
            transition: all 0.25s ease;
            z-index: 1100;
            max-width: calc(100vw - 32px);
        }

        .toast.active {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }