* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background: #fefaff;
            color: #1f1a3c;
            line-height: 1.5;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 28px;
        }
        :root {
            --primary: #a855f7;
            --primary-dark: #7e22ce;
            --secondary: #f43f5e;
            --gradient-hero: linear-gradient(135deg, #c084fc 0%, #db2777 100%);
            --card-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0,0,0,0.02);
            --border-light: 1px solid rgba(168, 85, 247, 0.15);
        }
        .header {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            position: sticky;
            top: 0;
            z-index: 100;
            border-bottom: 1px solid rgba(168, 85, 247, 0.2);
        }
        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            padding: 1rem 0;
        }
        .logo a {
            font-size: 1.6rem;
            font-weight: 800;
            background: linear-gradient(125deg, #a855f7, #ec4899);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-decoration: none;
            letter-spacing: -0.02em;
        }
        .nav-links {
            display: flex;
            gap: 2rem;
            align-items: center;
            flex-wrap: wrap;
        }
        .nav-links a {
            text-decoration: none;
            font-weight: 500;
            color: #2d2a4a;
            transition: 0.2s;
        }
        .nav-links a:hover {
            color: #a855f7;
        }
        .btn-subscribe {
            background: linear-gradient(105deg, #a855f7, #d946ef);
            color: white !important;
            padding: 0.5rem 1.4rem;
            border-radius: 40px;
            box-shadow: 0 6px 12px -6px rgba(168, 85, 247, 0.4);
            transition: all 0.2s;
        }
        .btn-subscribe:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 20px -10px #a855f7;
        }
        .page-header {
            text-align: center;
            padding: 3rem 0 1rem;
        }
        .page-header h1 {
            font-size: 2.6rem;
            font-weight: 800;
            background: linear-gradient(to right, #4c1d95, #db2777, #c026d3);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            margin-bottom: 1rem;
        }
        .page-header p {
            font-size: 1.2rem;
            color: #4c4b6e;
            max-width: 700px;
            margin: 0 auto;
        }
        .quick-diagnostic {
            background: linear-gradient(115deg, #faf5ff 0%, #ffffff 100%);
            border-radius: 1.8rem;
            padding: 1.8rem;
            margin: 2rem 0;
            border: 1px solid #ede9fe;
            box-shadow: var(--card-shadow);
        }
        .diag-title {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 1rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            color: #2d1b69;
        }
        .diag-steps {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            margin: 1rem 0;
        }
        .diag-step {
            flex: 1;
            background: white;
            border-radius: 1.2rem;
            padding: 1rem;
            text-align: center;
            border: 1px solid #ede9fe;
            transition: transform 0.2s;
        }
        .diag-step:hover {
            transform: translateY(-4px);
            border-color: #c084fc;
        }
        .badge {
            background: #f3e8ff;
            color: #7e22ce;
            padding: 0.2rem 0.8rem;
            border-radius: 40px;
            font-size: 0.75rem;
            font-weight: 500;
            display: inline-block;
            margin-top: 0.5rem;
        }
        .alert-banner {
            background: #fff7ed;
            border-left: 5px solid #f97316;
            padding: 1rem 1.5rem;
            border-radius: 1rem;
            margin: 1rem 0;
        }
        .error-code-table {
            background: white;
            border-radius: 1.5rem;
            overflow: hidden;
            border: 1px solid #ede9fe;
            margin: 1.5rem 0;
        }
        .error-table-row {
            display: flex;
            border-bottom: 1px solid #ede9fe;
        }
        .error-table-row:last-child {
            border-bottom: none;
        }
        .error-code {
            width: 30%;
            background: #faf9ff;
            padding: 0.8rem 1rem;
            font-weight: 700;
            font-family: monospace;
            color: #7e22ce;
        }
        .error-desc {
            width: 70%;
            padding: 0.8rem 1rem;
            color: #4a4468;
        }
        .faq-search {
            margin: 2rem auto 2rem;
            max-width: 550px;
        }
        .search-box {
            display: flex;
            background: white;
            border-radius: 60px;
            border: 1px solid #ede9fe;
            overflow: hidden;
            box-shadow: 0 2px 6px rgba(0,0,0,0.02);
        }
        .search-box input {
            flex: 1;
            padding: 0.85rem 1.5rem;
            border: none;
            font-size: 1rem;
            outline: none;
            background: transparent;
        }
        .search-box button {
            background: linear-gradient(105deg, #a855f7, #d946ef);
            border: none;
            padding: 0 1.8rem;
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: opacity 0.2s;
            font-size: 0.95rem;
        }
        .search-box button:hover {
            opacity: 0.9;
        }
        .faq-categories {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.8rem;
            margin: 1.5rem 0 2.5rem;
        }
        .cat-btn {
            background: #f3e8ff;
            border: none;
            padding: 0.5rem 1.3rem;
            border-radius: 40px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s;
            color: #4c1d95;
        }
        .cat-btn.active {
            background: #a855f7;
            color: white;
        }
        .faq-list {
            max-width: 900px;
            margin: 0 auto 4rem;
        }
        .faq-item {
            background: white;
            border-radius: 1.25rem;
            margin-bottom: 1rem;
            border: 1px solid #ede9fe;
            transition: all 0.2s;
            overflow: hidden;
        }
        .faq-question {
            padding: 1.2rem 1.8rem;
            font-weight: 600;
            font-size: 1.05rem;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #ffffff;
            transition: background 0.2s;
            color: #2d1b69;
        }
        .faq-question:hover {
            background: #faf5ff;
        }
        .q-icon {
            color: #a855f7;
            margin-right: 0.75rem;
        }
        .toggle-icon {
            font-size: 1.3rem;
            color: #a855f7;
        }
        .faq-answer {
            padding: 0 1.8rem 1.2rem 1.8rem;
            border-top: 1px solid #ede9fe;
            color: #4a4468;
            line-height: 1.6;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        .faq-answer code {
            background: #f3e8ff;
            padding: 0.2rem 0.4rem;
            border-radius: 8px;
            font-size: 0.9rem;
        }
        .no-results {
            text-align: center;
            padding: 3rem;
            background: white;
            border-radius: 1.5rem;
            color: #4a4468;
        }
        .footer {
            border-top: 1px solid #ede9fe;
            background: #fcfaff;
            padding: 2rem 0;
            margin-top: 2rem;
            text-align: center;
            color: #5b5580;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1rem;
        }
        .footer-links a {
            text-decoration: none;
            color: #a855f7;
            font-weight: 500;
        }
        .footer-links a:hover {
            color: #d946ef;
        }
        @media (max-width: 768px) {
            .nav {
                flex-direction: column;
                gap: 1rem;
            }
            .page-header h1 {
                font-size: 1.8rem;
            }
            .diag-steps {
                flex-direction: column;
            }
            .error-table-row {
                flex-direction: column;
            }
            .error-code, .error-desc {
                width: 100%;
            }
            .faq-question {
                padding: 1rem;
                font-size: 0.95rem;
            }
        }