* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: system-ui, 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
            background: linear-gradient(145deg, #eef2f7 0%, #d4e0ea 100%);
            padding: 2rem 1.5rem;
            min-height: 100vh;
        }

        /* main card container */
        .faq-wrapper {
            max-width: 880px;
            margin: 0 auto;
            background: rgba(255,255,255,0.94);
            border-radius: 2.5rem;
            box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.3), 0 4px 12px rgba(0, 0, 0, 0.05);
            overflow: hidden;
            transition: all 0.2s ease;
        }

        /* header section - no orange elements */
        .faq-header {
            background: #0a2b3e;
            padding: 1.8rem 2rem;
            color: white;
            text-align: center;
        }

        .faq-header h1 {
            font-size: 1.9rem;
            font-weight: 700;
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        .faq-header h1 i {
            font-size: 2rem;
            color: #ffffff;    /* removed orange, use white */
        }

        .faq-header p {
            margin-top: 0.6rem;
            opacity: 0.88;
            font-weight: 400;
            font-size: 1rem;
        }

        /* control buttons row */
        .controls {
            display: flex;
            justify-content: flex-end;
            gap: 1rem;
            padding: 1rem 2rem;
            background: #ffffffcc;
            border-bottom: 1px solid #e2e8f0;
            backdrop-filter: blur(2px);
        }

        .ctrl-btn {
            background: #f0f4f9;
            border: none;
            padding: 0.5rem 1.2rem;
            border-radius: 60px;
            font-weight: 500;
            font-size: 0.85rem;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all 0.2s ease;
            color: #1e3a5f;
            box-shadow: 0 1px 2px rgba(0,0,0,0.05);
        }

        .ctrl-btn i {
            font-size: 0.9rem;
        }

        .ctrl-btn:hover {
            background: #e2e8f2;
            transform: translateY(-1px);
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
        }

        .ctrl-btn:active {
            transform: translateY(1px);
        }

        /* accordion container */
        .accordion {
            padding: 0.5rem 1.5rem 2rem 1.5rem;
        }

        /* each faq item */
        .accordion-item {
            background: #ffffff;
            margin: 0.75rem 0;
            border-radius: 1.5rem;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04), 0 1px 2px rgba(0, 0, 0, 0.03);
            transition: box-shadow 0.2s;
            border: 1px solid #eef2f9;
        }

        .accordion-item:hover {
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.07);
        }

        /* question button - no orange */
        .accordion-btn {
            width: 100%;
            background: transparent;
            border: none;
            padding: 1.2rem 1.6rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
            font-weight: 600;
            color: #0c2e42;
            cursor: pointer;
            border-radius: 1.5rem;
            transition: background 0.2s;
            text-align: left;
            gap: 1rem;
        }

        .accordion-btn .question-text {
            line-height: 1.4;
            flex: 1;
        }

        .accordion-btn i {
            font-size: 1.2rem;
            color: #2c7da0;     /* cool blue, no orange */
            transition: transform 0.2s ease;
            width: 1.5rem;
            text-align: center;
        }

        .accordion-btn:hover {
            background: #f8fafd;
        }

        .accordion-btn:focus-visible {
            outline: 2px solid #2c7da0;
            outline-offset: -2px;
            border-radius: 1.5rem;
        }

        /* answer panel (collapsible using max-height) */
        .accordion-panel {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s cubic-bezier(0.33, 1, 0.68, 1);
            background: #fefefe;
            border-radius: 0 0 1.5rem 1.5rem;
        }

        .accordion-panel.show {
            max-height: 500px;   /* enough for all answer text */
        }

        /* inner padding for answer content */
        .panel-inner {
            padding: 0.2rem 1.6rem 1.5rem 1.6rem;
            color: #1f3b4c;
            font-size: 0.98rem;
            line-height: 1.55;
            border-top: 1px solid #e9edf2;
            margin-top: 0px;
            background: #ffffff;
            border-radius: 0 0 1.5rem 1.5rem;
        }

        .panel-inner p {
            margin-top: 0.5rem;
        }

        /* subtle highlight for keywords - blue tone instead of orange */
        .panel-inner strong {
            color: #1f6392;
            font-weight: 600;
        }

        /* responsive */
        @media (max-width: 640px) {
            body {
                padding: 1rem;
            }
            .faq-header h1 {
                font-size: 1.5rem;
            }
            .accordion-btn {
                padding: 1rem 1.2rem;
                font-size: 0.95rem;
            }
            .panel-inner {
                padding: 0.2rem 1.2rem 1.2rem 1.2rem;
                font-size: 0.9rem;
            }
            .controls {
                padding: 0.8rem 1.2rem;
            }
            .accordion {
                padding: 0.25rem 0.8rem 1.8rem 0.8rem;
            }
        }

        /* footnote */
        .footnote {
            text-align: center;
            padding: 1rem 1rem 1.5rem;
            font-size: 0.75rem;
            color: #5b7f95;
            border-top: 1px solid #e2edf5;
            background: #fafeff;
        }

        .footnote i {
            margin: 0 2px;
        }