:root {
            --primary: #698B22;
            --primary-light: #7bab1e;
            --primary-lighter-transparent: rgba(123, 171, 30, 0.2);
            --primary-dark: #556b1c;
            --primary-transparent: rgba(105, 139, 34, 0.08);
            --text-dark: #1a1a1a;
            --text-medium: #333;
            --text-light: #666;
            --background: #FFFFFF;
            --background-alt: #f8f9fa;
            --radius: 8px;
            --transition: all 0.3s ease;
            --card-shadow-main: rgba(0, 0, 0, 0.05) 0px 0px 0px 1px, rgb(209, 213, 219) 0px 0px 0px 1px inset;
            --card-shadow-hover: rgba(0, 0, 0, 0.07) 0px 0px 0px 1px, rgb(209, 213, 219) 0px 0px 0px 1px inset, 0 4px 12px rgba(0, 0, 0, 0.08);
        }

        .btn-secondary--kfw {
            background: linear-gradient(135deg, #3b82f6, #2563eb);
            color: #ffffff;
            font-weight: bold;
        }

        .footer-heading-spaced {
            margin-top: 30px;
        }

        .address-line-indent {
            padding-left: 30px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: 'Geist Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.7;
            color: var(--text-medium);
            background: var(--background);
        }

        /* Hero Section */
        .hero {
            position: relative;
            height: 70vh;
            min-height: 500px;
            background-color: #e2e8f0;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .hero-qng {
            background-image: url('../images/QNG/header.webp?v=2');
        }

        .hero-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 40px;
            width: 100%;
            position: relative;
        }

        .hero-title-card {
            background: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            padding: 20px 40px;
            max-width: 620px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            margin-top: 20px;
            margin-bottom: 15px;
            position: relative;
        }

        .hero-title-main {
            font-size: 2.5rem;
            font-weight: 700;
            color: white;
            margin: 0;
            line-height: 1.2;
        }

        .hero-title-subtitle {
            font-size: 1.1rem;
            color: rgba(255, 255, 255, 0.9);
            display: block;
            margin-top: 8px;
        }

        .hero-content {
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 12px;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            padding: 40px;
            max-width: 620px;
        }

        .hero-subtitle {
            font-size: 1rem;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.95);
            margin-bottom: 24px;
        }

        .hero-buttons {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--primary);
            color: white;
            padding: 14px 42px;
            border: none;
            border-radius: var(--radius);
            text-decoration: none;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            cursor: pointer;
            display: inline-block;
        }

        .btn-primary:hover {
            background-color: var(--primary-dark);
            transform: scale(1.03);
        }

        .btn-secondary {
            background: var(--text-dark);
            color: white;
            padding: 12px 22px;
            border: 1px solid var(--text-dark);
            font-weight: 500;
            border-radius: var(--radius);
            text-decoration: none;
            transition: var(--transition);
            cursor: pointer;
            display: inline-block;
        }

        .btn-secondary:hover {
            background-color: var(--text-medium);
            border-color: var(--text-medium);
            transform: scale(1.03);
        }

        /* Main Content */
        .container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 80px 24px;
        }

        .section {
            margin-bottom: 80px;
        }

        /* Section Title Decorator V2 */
        .section-title-decorator-v2 {
            margin-bottom: 40px;
            margin-top: 100px;
        }

        .section-title-decorator-v2:first-of-type {
            margin-top: 0;
        }

        .decorator-header-line {
            display: flex;
            align-items: center;
            margin-bottom: 10px;
        }

        .decorator-number-v2 {
            font-size: 1.3rem;
            font-weight: 600;
            color: white;
            background-color: var(--primary);
            padding: 4px 10px;
            border-radius: 4px;
            margin-right: 12px;
            line-height: 1;
            flex-shrink: 0;
        }

        .decorator-line-v2 {
            flex-grow: 1;
            height: 3px;
            background: linear-gradient(to right, transparent 0%, transparent 100%);
            transition: background 0.4s ease-out;
        }

        .decorator-title-v2 {
            font-size: 1.8rem;
            color: var(--text-dark);
            margin: 0;
            font-weight: 700;
            line-height: 1.3;
        }

        /* Feature Grid - 6 Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 24px;
        }

        .feature-card {
            background: white;
            padding: 32px;
            border-radius: var(--radius);
            box-shadow: var(--card-shadow-main);
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }

        .feature-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }

        .feature-icon {
            width: 40px;
            height: 40px;
            background: var(--text-dark);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 1.2rem;
        }

        .feature-icon i {
            width: 20px;
            height: 20px;
        }

        .feature-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .feature-text {
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* QNG Comparison Section */
        .qng-intro {
            background: white;
            padding: 40px;
            border-radius: var(--radius);
            border: 1px solid #e5e7eb;
            box-shadow: var(--card-shadow-main);
            margin-bottom: 40px;
            transition: var(--transition);
        }

        .qng-intro:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .qng-intro-icon {
            width: 48px;
            height: 48px;
            background: var(--primary);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 1.5rem;
            margin-bottom: 24px;
        }

        .qng-intro-icon i {
            width: 24px;
            height: 24px;
        }

        .qng-intro h3 {
            font-size: 1.6rem;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .qng-intro p {
            color: var(--text-medium);
            line-height: 1.8;
            margin-bottom: 16px;
            font-size: 1rem;
        }

        .qng-intro p:last-child {
            margin-bottom: 0;
        }

        .qng-intro strong {
            color: var(--text-dark);
            font-weight: 600;
        }

        .qng-comparison {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
            gap: 32px;
        }

        .qng-card {
            background: white;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--card-shadow-main);
            transition: var(--transition);
        }

        .qng-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }

        .qng-header {
            padding: 32px;
            text-align: center;
            color: white;
        }

        .qng-header.plus {
            background: #3b82f6;
        }

        .qng-header.premium {
            background: #f59e0b;
        }

        .qng-header h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .qng-header p {
            font-size: 1rem;
            opacity: 0.95;
        }

        .qng-content {
            padding: 32px;
        }

        .qng-features {
            list-style: none;
        }

        .qng-features li {
            padding: 14px 0;
            border-bottom: 1px solid #e5e7eb;
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
        }

        .qng-features li:last-child {
            border-bottom: none;
        }

        .qng-features i {
            color: var(--primary);
            margin-top: 4px;
            flex-shrink: 0;
        }

        .qng-features.premium i {
            color: #f59e0b;
        }

        /* Requirements Grid - 7 Cards */
        .requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

        .requirement-card {
            background: white;
            padding: 28px;
            border-radius: var(--radius);
            box-shadow: var(--card-shadow-main);
            transition: var(--transition);
            border: 1px solid #e5e7eb;
        }

        .requirement-card:hover {
            box-shadow: var(--card-shadow-hover);
            transform: translateY(-4px);
        }

        .requirement-icon {
            width: 40px;
            height: 40px;
            background: var(--text-dark);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: white;
            font-size: 1.2rem;
        }

        .requirement-icon i {
            width: 20px;
            height: 20px;
        }

        .requirement-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 12px;
        }

        .requirement-text {
            color: var(--text-light);
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* Process Tabs Section */
        .process-tabs {
            background: white;
            border-radius: var(--radius);
            box-shadow: var(--card-shadow-main);
            overflow: hidden;
        }

        .tab-buttons {
            display: flex;
            flex-wrap: wrap;
            background: #f8f9fa;
            border-bottom: 2px solid #e5e7eb;
        }

        .tab-button {
            flex: 1;
            min-width: 150px;
            padding: 18px 24px;
            border: none;
            background: transparent;
            color: var(--text-medium);
            font-weight: 600;
            font-size: 0.95rem;
            cursor: pointer;
            transition: var(--transition);
            border-bottom: 3px solid transparent;
        }

        .tab-button:hover {
            background: #e5e7eb;
        }

        .tab-button.active {
            background: white;
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .tab-content {
            display: none;
            padding: 40px;
        }

        .tab-content.active {
            display: block;
        }

        .tab-content-inner {
            display: flex;
            align-items: center;
            gap: 40px;
            max-width: 100%;
        }

        .tab-image {
            width: 350px;
            height: 350px;
            border-radius: var(--radius);
            object-fit: cover;
            flex-shrink: 0;
            box-shadow: var(--card-shadow-main);
        }

        .tab-text {
            flex: 1;
        }

        .tab-text h3 {
            font-size: 2rem;
            color: var(--text-dark);
            margin-bottom: 20px;
            font-weight: 700;
        }

        .tab-text p {
            color: var(--text-light);
            line-height: 1.9;
            font-size: 1.1rem;
        }

        /* FAQ Section */
        .faq-section {
            background: #f8f9fa;
            padding: 80px 24px;
        }

        .faq-container {
            max-width: 1400px;
            margin: 0 auto;
        }

        .faq-container.content-card-wrapper {
            padding: 0;
            overflow: hidden;
            margin-bottom: 60px;
            background: white;
            border-radius: 10px;
            box-shadow: var(--card-shadow-main);
            transition: box-shadow 0.3s ease;
        }

        .faq-container.content-card-wrapper:hover {
            box-shadow: var(--card-shadow-hover);
        }

        .faq-list-item {
            border-bottom: 1px solid #f3f4f6;
        }

        .faq-list-item:last-child {
            border-bottom: none;
        }

        .faq-list-question {
            padding: 16px 24px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: background 0.2s ease;
            cursor: pointer;
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-dark);
            justify-content: space-between;
            border: none;
            background: white;
            width: 100%;
            text-align: left;
        }

        .faq-list-question:hover {
            background: #f9fafb;
        }

        .faq-list-question .card-list-bullet {
            width: 8px;
            height: 8px;
            background: var(--primary);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .faq-list-question > span {
            flex-grow: 1;
        }

        .faq-list-question .faq-arrow {
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 1em;
            flex-shrink: 0;
        }

        .faq-list-question.active {
            color: var(--primary);
        }

        .faq-list-question.active .faq-arrow {
            transform: rotate(180deg);
        }

        .faq-list-answer {
            color: var(--text-light);
            line-height: 1.7;
            padding: 0px 24px 20px 44px;
            display: none;
            background-color: #fff;
            font-size: 0.95rem;
        }

        .faq-list-question.active + .faq-list-answer {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
            color: white;
            padding: 80px 24px;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 2.5rem;
            margin-bottom: 20px;
        }

        .cta-section p {
            font-size: 1.2rem;
            margin-bottom: 32px;
            opacity: 0.95;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .hero {
                height: auto;
                min-height: auto;
                padding: 60px 0;
            }

            .hero-container {
                padding: 0 20px;
            }

            .hero-title-card {
                padding: 18px 24px;
                max-width: 100%;
            }

            .hero-title-main {
                font-size: 1.8rem;
            }

            .hero-title-subtitle {
                font-size: 0.95rem;
            }

            .hero-content {
                padding: 24px;
                max-width: 100%;
            }

            .hero-subtitle {
                font-size: 0.95rem;
            }

            .decorator-title-v2 {
                font-size: 1.5rem;
            }

            .feature-grid,
            .requirements-grid {
                grid-template-columns: 1fr;
            }

            .qng-comparison {
                grid-template-columns: 1fr;
            }

            .tab-buttons {
                flex-direction: column;
            }

            .tab-content-inner {
                flex-direction: column;
            }

            .tab-image {
                width: 100%;
                height: 180px;
                margin: 0 auto 20px;
            }

            .qng-stufen-container {
                grid-template-columns: 1fr;
                gap: 25px;
                margin-bottom: 30px;
            }

            .qng-stufe-card {
                min-height: auto;
            }

            .qng-stufe-image {
                height: 200px;
            }

            .qng-stufe-content {
                padding: 25px;
            }

            .qng-stufe-content h3 {
                font-size: 1.5rem;
            }
        }

        /* QNG Stufen Design */
        .qng-stufen-container {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            margin-bottom: 60px;
        }

        .qng-stufe-card {
            display: flex;
            flex-direction: column;
            background: var(--background);
            border-radius: 12px;
            box-shadow: var(--card-shadow-main);
            overflow: hidden;
            min-height: 400px;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .qng-stufe-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .qng-stufe-image {
            width: 100%;
            position: relative;
            overflow: hidden;
            height: 250px;
            background: #e9ecef;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .qng-stufe-image img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .qng-stufe-content {
            padding: 30px;
            display: flex;
            flex-direction: column;
            flex-grow: 1;
        }

        .qng-stufe-content h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-dark);
            margin-bottom: 15px;
            line-height: 1.2;
        }

        .qng-stufe-intro {
            font-size: 1.1rem;
            color: var(--text-light);
            margin-bottom: 20px;
            line-height: 1.6;
        }

        .qng-pflicht-hinweis {
            font-size: 0.9rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 25px;
            padding: 8px 12px;
            background: var(--primary-transparent);
            border-radius: 6px;
            display: inline-block;
        }

        .qng-kriterien-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .qng-kriterium {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .qng-kriterium-icon {
            width: 32px;
            height: 32px;
            background: var(--primary);
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .qng-kriterium-icon i {
            color: white;
            font-size: 14px;
        }

        .qng-kriterium span {
            font-size: 1.05rem;
            color: var(--text-medium);
            line-height: 1.6;
        }