/* ============================================
           PREMIUM CSS VARIABLES (UNIQUE PREFIX: htb-)
           ============================================ */
        :root {
            --htb-primary: #0f172a;
            --htb-secondary: #ff6b35;
            --htb-accent: #0ea5e9;
            --htb-accent-light: #e0f2fe;
            --htb-success: #10b981;
            --htb-warning: #f59e0b;
            --htb-light-bg: #f8fafc;
            --htb-white: #ffffff;
            --htb-text-primary: #0f172a;
            --htb-text-secondary: #64748b;
            --htb-text-tertiary: #94a3b8;
            --htb-border-color: #e2e8f0;
            --htb-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --htb-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --htb-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --htb-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
            --htb-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        /* ============================================
           GLOBAL RESET & BASE
           ============================================ */
        .htb-body-wrapper * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        .htb-body-wrapper {
            font-family: 'Poppins', sans-serif;
            background-color: var(--htb-white);
            color: var(--htb-text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        .htb-container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .htb-section {
            padding: clamp(3rem, 8vw, 6rem) 0;
        }

        .htb-section-light {
            background-color: var(--htb-light-bg);
        }

        /* ============================================
           TYPOGRAPHY
           ============================================ */
        .htb-body-wrapper h1, 
        .htb-body-wrapper h2, 
        .htb-body-wrapper h3, 
        .htb-body-wrapper h4 {
            font-family: 'Sora', sans-serif;
            font-weight: 800;
            line-height: 1.2;
            color: var(--htb-primary);
        }

        .htb-body-wrapper h1 {
            font-size: clamp(2.25rem, 6vw, 4rem);
            margin-bottom: 1.5rem;
            letter-spacing: -0.03em;
        }

        .htb-body-wrapper h2 {
            font-size: clamp(1.75rem, 5vw, 2.75rem);
            margin-bottom: 1.5rem;
            letter-spacing: -0.02em;
            position: relative;
            padding-bottom: 0.75rem;
        }

        .htb-body-wrapper h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--htb-secondary);
            border-radius: 2px;
        }

        .htb-body-wrapper h3 {
            font-size: clamp(1.25rem, 3vw, 1.75rem);
            margin-bottom: 1rem;
        }

        .htb-body-wrapper p {
            font-size: clamp(1rem, 2vw, 1.125rem);
            color: var(--htb-text-secondary);
            margin-bottom: 1.25rem;
        }

        /* ============================================
           HERO SECTION
           ============================================ */
        .htb-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: var(--htb-white);
            padding: clamp(4rem, 12vw, 8rem) 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .htb-hero-content {
            position: relative;
            z-index: 2;
            max-width: 900px;
            margin: 0 auto;
        }

        .htb-hero h1 {
            color: var(--htb-white);
        }

        .htb-hero p {
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 2.5rem;
        }

        .htb-hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 1rem;
            justify-content: center;
        }

        /* ============================================
           BUTTONS
           ============================================ */
        .htb-btn {
            display: inline-flex;
            align-items: center;
            gap: 0.75rem;
            padding: 1rem 2rem;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--htb-transition);
            cursor: pointer;
            border: none;
            font-size: 1rem;
        }

        .htb-btn-primary {
            background-color: var(--htb-secondary);
            color: var(--htb-white);
            box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
        }

        .htb-btn-primary:hover {
            background-color: #e85a24;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
        }

        .htb-btn-outline {
            background-color: transparent;
            color: var(--htb-white);
            border: 2px solid rgba(255, 255, 255, 0.3);
        }

        .htb-btn-outline:hover {
            background-color: rgba(255, 255, 255, 0.1);
            border-color: var(--htb-white);
        }

        /* ============================================
           QUICK VALUE HIGHLIGHTS
           ============================================ */
        .htb-highlights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .htb-highlight-card {
            background: var(--htb-white);
            padding: 1.5rem;
            border-radius: 12px;
            border: 1px solid var(--htb-border-color);
            transition: var(--htb-transition);
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }

        .htb-highlight-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--htb-shadow-lg);
            border-color: var(--htb-accent);
        }

        .htb-highlight-icon {
            font-size: 2rem;
            color: var(--htb-accent);
            margin-bottom: 1rem;
        }

        .htb-highlight-text {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--htb-primary);
        }

        /* ============================================
           PRODUCT CARDS
           ============================================ */
        .htb-product-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 2rem;
            margin-top: 3rem;
        }

        .htb-product-card {
            background: var(--htb-white);
            border-radius: 16px;
            border: 1px solid var(--htb-border-color);
            overflow: hidden;
            transition: var(--htb-transition);
            display: flex;
            flex-direction: column;
            box-shadow: var(--htb-shadow-sm);
        }

        .htb-product-card:hover {
            box-shadow: var(--htb-shadow-xl);
            transform: translateY(-8px);
        }

        .htb-product-header {
            padding: 2rem;
            background: var(--htb-light-bg);
            border-bottom: 1px solid var(--htb-border-color);
        }

        .htb-product-body {
            padding: 2rem;
            flex-grow: 1;
        }

        .htb-product-badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            background: var(--htb-accent-light);
            color: var(--htb-accent);
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }

        .htb-product-specs {
            list-style: none;
            margin: 1.5rem 0;
        }

        .htb-product-specs li {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
            font-size: 0.95rem;
            color: var(--htb-text-secondary);
        }

        .htb-product-specs i {
            color: var(--htb-success);
            font-size: 1.1rem;
        }

        .htb-product-footer {
            padding: 1.5rem 2rem;
            border-top: 1px solid var(--htb-border-color);
        }

        /* ============================================
           COMPARISON TABLE
           ============================================ */
        .htb-table-container {
            width: 100%;
            overflow-x: auto;
            margin-top: 2rem;
            border-radius: 12px;
            box-shadow: var(--htb-shadow-md);
            border: 1px solid var(--htb-border-color);
        }

        .htb-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 800px;
            background: var(--htb-white);
        }

        .htb-table th {
            background: var(--htb-primary);
            color: var(--htb-white);
            text-align: left;
            padding: 1.25rem;
            font-weight: 600;
        }

        .htb-table td {
            padding: 1.25rem;
            border-bottom: 1px solid var(--htb-border-color);
            color: var(--htb-text-secondary);
        }

        .htb-table tr:last-child td {
            border-bottom: none;
        }

        .htb-table tr:hover {
            background: var(--htb-light-bg);
        }

        /* ============================================
           CATEGORY GRID
           ============================================ */
        .htb-cat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .htb-cat-card {
            padding: 2rem;
            background: var(--htb-white);
            border-radius: 12px;
            border: 1px solid var(--htb-border-color);
            transition: var(--htb-transition);
        }

        .htb-cat-card:hover {
            border-color: var(--htb-secondary);
            background: #fffaf9;
        }

        .htb-cat-card i {
            font-size: 2.5rem;
            color: var(--htb-secondary);
            margin-bottom: 1.5rem;
        }

        /* ============================================
           FAQ ACCORDION
           ============================================ */
        .htb-faq-item {
            margin-bottom: 1rem;
            border: 1px solid var(--htb-border-color);
            border-radius: 8px;
            overflow: hidden;
        }

        .htb-faq-question {
            padding: 1.25rem;
            background: var(--htb-white);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            transition: var(--htb-transition);
        }

        .htb-faq-question:hover {
            background: var(--htb-light-bg);
        }

        .htb-faq-answer {
            padding: 0 1.25rem;
            max-height: 0;
            overflow: hidden;
            transition: all 0.4s ease;
            background: var(--htb-white);
        }

        .htb-faq-item.active .htb-faq-answer {
            padding: 1.25rem;
            max-height: 500px;
            border-top: 1px solid var(--htb-border-color);
        }

        .htb-faq-item.active .htb-faq-question i {
            transform: rotate(180deg);
        }

        /* ============================================
           FOOTER & DISCLOSURE
           ============================================ */
        .htb-footer {
            background: var(--htb-primary);
            color: var(--htb-white);
            padding: 4rem 0 2rem;
        }

        .htb-disclosure {
            font-size: 0.875rem;
            color: var(--htb-text-tertiary);
            padding: 1.5rem;
            background: rgba(255,255,255,0.05);
            border-radius: 8px;
            margin-top: 2rem;
        }

        /* ============================================
           MOBILE ADJUSTMENTS
           ============================================ */
        @media (max-width: 768px) {
            .htb-hero-btns {
                flex-direction: column;
            }
            .htb-btn {
                width: 100%;
                justify-content: center;
            }
            .htb-product-grid {
                grid-template-columns: 1fr;
            }
        }