/* ===== Base ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #ffffff;
            line-height: 1.6;
            color: #0f172a;
        }

        /* Container */
        .container {
            max-width: 950px;
            margin: 0 auto;
            padding: 40px 20px;
            position: relative;
        }

        /* Background blobs */
        .blob {
            position: absolute;
            border-radius: 50%;
            filter: blur(100px);
            opacity: .55;
            z-index: 0;
            pointer-events: none;
        }
        .blob1 { width: 280px; height: 280px; background: #bfdbfe; top: 0; right: 0; }
        .blob2 { width: 240px; height: 240px; background: #e9d5ff; bottom: 0; left: 0; }
        .blob3 { width: 200px; height: 200px; background: #c7d2fe; top: 45%; left: 15%; }

        /* Header */
        .header {
            text-align: center;
            position: relative;
            z-index: 1;
            margin-bottom: 2.2rem;
        }

        .header h1 {
            font-size: clamp(34px, 7vw, 48px);
            margin-bottom: 10px;
            font-weight: 800;
            letter-spacing: -0.02em;
            background: linear-gradient(145deg, #0b1f44, #2d3c5e);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1.2;
        }

        .header p {
            color: #2c455d;
            font-size: 1.25rem;
            font-weight: 400;
            max-width: 700px;
            margin: 0 auto 15px;
        }

        /* Tags (keyword cloud) */
        .tags span {
            display: inline-block;
            padding: 6px 18px;
            margin: 5px 6px;
            border-radius: 40px;
            font-size: 0.85rem;
            font-weight: 600;
            background: #eef2ff;
            color: #1e40af;
            box-shadow: 0 2px 6px rgba(37,99,235,0.1);
            border: 1px solid rgba(255,255,255,0.7);
        }

        /* ===== FAQ Cards ===== */
        .faq {
            position: relative;
            z-index: 2;
        }

        .card {
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(226, 232, 240, 0.9);
            border-radius: 26px;
            margin-bottom: 16px;
            overflow: hidden;
            transition: all 0.3s ease;
            box-shadow: 0 6px 14px rgba(0,0,0,0.02);
        }
        .card:hover {
            box-shadow: 0 20px 30px rgba(37, 99, 235, 0.15);
            border-color: #a5c0ff;
        }

        .card-header {
            padding: 1.2rem 1.8rem;
            cursor: pointer;
            font-weight: 650;
            font-size: 1.18rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: #0c1b3b;
            transition: background 0.2s;
            background: rgba(255,255,255,0.55);
            user-select: none;
            border-bottom: 1px solid transparent;
        }
        .card-header::after {
            content: "▼";
            font-size: 0.9rem;
            color: #2563eb;
            transition: transform 0.3s ease;
            opacity: 0.8;
            margin-left: 10px;
        }
        .card.active .card-header::after {
            transform: rotate(180deg);
        }
        .card-header:hover {
            background: rgba(219, 234, 254, 0.7);
        }

        .card-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 0 1.8rem;
            color: #1e2b45;
            background: rgba(255,255,255,0.3);
        }
        .card-content p {
            padding-bottom: 1.6rem;
            margin-top: 0.4rem;
        }
        .card.active .card-content {
            max-height: 450px;
        }

        /* Buttons */
        .buttons {
            text-align: center;
            margin-top: 45px;
            position: relative;
            z-index: 2;
        }

        .btn {
            display: inline-block;
            padding: 15px 34px;
            margin: 8px 10px;
            border-radius: 60px;
            font-weight: 600;
            text-decoration: none;
            transition: 0.25s;
            font-size: 1.05rem;
            box-shadow: 0 10px 20px -8px rgba(37,99,235,0.5);
            border: 1px solid transparent;
        }

        .btn-primary {
            background: linear-gradient(115deg, #2563eb, #7c3aed);
            color: white;
        }
        .btn-secondary {
            background: rgba(255,255,255,0.9);
            border: 1px solid #cbd5e1;
            color: #1e293b;
            backdrop-filter: blur(4px);
        }

        .btn:hover {
            transform: scale(1.06) translateY(-4px);
            box-shadow: 0 22px 32px -8px #1e3c8a;
        }

        /* Footer note (for internal linking - SEO boost) */
        .seo-footer {
            margin-top: 50px;
            text-align: center;
            font-size: 0.9rem;
            color: #4b556b;
            border-top: 1px dashed #cbd5e1;
            padding-top: 25px;
        }
        .seo-footer a {
            color: #2563eb;
            text-decoration: none;
            margin: 0 8px;
        }
        .seo-footer a:hover {
            text-decoration: underline;
        }