html {
            scroll-behavior: smooth; /* Ermöglicht sanftes Scrollen für Ankerlinks */
            /* Scrollbar Farben für Firefox */
            scrollbar-color: var(--fronius-scrollbar-thumb, #3182ce) var(--fronius-scrollbar-track, #2d3748); /* Use primary blue */
        }

        /* Webkit Scrollbar Styling */
        ::-webkit-scrollbar {
            width: 8px;
        }
        ::-webkit-scrollbar-track {
            background: var(--fronius-scrollbar-track, #2d3748);
        }
        ::-webkit-scrollbar-thumb {
            background-color: var(--fronius-scrollbar-thumb, #3182ce); /* Use primary blue */
            border-radius: 4px;
        }

        /* Visually hidden class for accessibility */
        .visually-hidden {
            position: absolute !important;
            width: 1px !important;
            height: 1px !important;
            padding: 0 !important;
            margin: -1px !important;
            overflow: hidden !important;
            clip: rect(0, 0, 0, 0) !important;
            white-space: nowrap !important;
            border-width: 0 !important;
        }

        /* === Fronius Landing Page Specific Styles === */
        #fronius-landing-page {
            /* --- Einheitliche Fronius-Farbpalette --- */
            --fronius-primary: #3182ce;      /* Blau als Hauptfarbe */
            --fronius-secondary: #63b3ed;     /* Helleres Blau als Sekundärfarbe */
            --fronius-light-blue: #63b3ed;
            --fronius-very-light-blue: #90cdf4;
            --fronius-highlight-blue: #4299e1;
            --fronius-accent-red: #ff4d29;      /* Fronius-Rot als Akzentfarbe */
            --fronius-accent-green: #48bb78;
            --fronius-accent-yellow: #ecc94b;
            --fronius-accent-orange: #ed8936;
            --fronius-dark-bg: #1a202c;
            --fronius-darker-bg: #121827;
            --fronius-card-bg: #2d3748;
            --fronius-card-bg-hover: #171e2b; /* Dunklerer Hover-Effekt */
            --fronius-text-light: #ffffff;
            --fronius-text-medium: #cbd5e0;
            --fronius-text-dark: #a0aec0;
            --fronius-text-highlight: var(--fronius-text-light);
            --fronius-border-color: #4a5568;
            --fronius-shadow-color: rgba(0, 0, 0, 0.3);
            --fronius-scrollbar-thumb: var(--fronius-primary);
            --fronius-scrollbar-track: var(--fronius-card-bg);

            /* --- Typografie Variablen --- */
            --fronius-heading-font: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            --fronius-body-font: 'Segoe UI', Roboto, -apple-system, BlinkMacSystemFont, sans-serif;
            --fronius-line-height-heading: 1.3;
            --fronius-line-height-body: 1.7;
            --fronius-letter-spacing-heading: -0.02em;

            /* --- Basis-Styles für den Wrapper --- */
            font-family: var(--fronius-body-font);
            line-height: var(--fronius-line-height-body);
            color: var(--fronius-text-dark);
            background-color: var(--fronius-dark-bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            position: relative;
        }

        /* Basis-Reset spezifisch für den Wrapper */
        #fronius-landing-page *,
        #fronius-landing-page *::before,
        #fronius-landing-page *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        /* === Container für den Hauptinhalt === */
        #fronius-landing-page .fronius-content-wrapper {
            width: 90%;
            max-width: 75ch; /* Optimale Lesebreite als Start */
            margin: 1.5rem auto;
            padding: 1rem;
            position: relative;
        }

        /* Breiteres Layout für größere Bildschirme */
        @media (min-width: 1200px) {
            #fronius-landing-page .fronius-content-wrapper { max-width: 1140px; }
        }
        @media (min-width: 1400px) {
            #fronius-landing-page .fronius-content-wrapper { max-width: 1280px; }
        }
        @media (min-width: 1600px) {
            #fronius-landing-page .fronius-content-wrapper { max-width: 1400px; }
            #fronius-landing-page .benefits-grid { grid-template-columns: repeat(4, 1fr); } /* Falls benötigt */
            #fronius-landing-page .banner-title h1 { font-size: 3em; }
        }

        /* === Header / Banner Section === */
        #fronius-landing-page header[role="banner"] { /* Use attribute selector for clarity */
            position: relative;
            margin-bottom: 3rem;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 8px var(--fronius-shadow-color);
        }
        #fronius-landing-page .logo-container {
            text-align: center;
            max-width: 100%;
            position: relative;
        }
        #fronius-landing-page .logo-container img {
            display: block;
            width: 100%;
            height: auto;
            max-height: 400px; /* Höhe anpassen oder variabel machen */
            object-fit: cover;
            object-position: center 30%; /* Fokuspunkt des Bildes anpassen */
            border-radius: 8px;
            filter: brightness(0.85); /* Leicht abdunkeln für Textkontrast */
        }
        #fronius-landing-page .logo-container::before {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 60%; /* Höhe des Verlaufs anpassen */
            background: linear-gradient(to top, rgba(13, 21, 37, 0.95), rgba(13, 21, 37, 0.7), transparent);
            z-index: 2;
            border-radius: 0 0 8px 8px;
            pointer-events: none;
        }
        #fronius-landing-page .banner-title {
            position: absolute;
            bottom: 20px;
            right: 20px;
            background-color: rgba(13, 21, 37, 0.85); /* Hintergrund für Lesbarkeit */
            padding: 10px 15px;
            border-radius: 6px;
            max-width: 70%; /* Verhindert Überlappung mit Logos etc. */
            text-align: right;
            z-index: 5;
        }
        #fronius-landing-page .banner-title h1 {
            font-family: var(--fronius-heading-font);
            font-size: 2.2em; /* Größe anpassen */
            padding-bottom: 0;
            margin: 0;
            border-bottom: none; /* Kein Unterstrich im Banner */
            letter-spacing: var(--fronius-letter-spacing-heading);
            color: var(--fronius-text-light);
            text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
            line-height: var(--fronius-line-height-heading);
        }

        /* === Typografie & Überschriften === */
        #fronius-landing-page h1,
        #fronius-landing-page h2,
        #fronius-landing-page h3,
        #fronius-landing-page h4 {
            font-family: var(--fronius-heading-font);
            color: var(--fronius-text-highlight);
            margin-top: 2em;
            margin-bottom: 0.7em;
            line-height: var(--fronius-line-height-heading);
            font-weight: 700;
            letter-spacing: var(--fronius-letter-spacing-heading);
        }
        #fronius-landing-page h1:not(.banner-title h1) { /* Hauptüberschrift im Content */
            font-size: 2.2em;
            padding-bottom: 0.4em;
            margin-top: 0.5em; /* Weniger Abstand oben für die erste H1 */
            margin-bottom: 0.5em;
            position: relative;
            border-bottom: 3px solid transparent;
            border-image: linear-gradient(90deg, var(--fronius-primary), transparent) 1;
        }
        #fronius-landing-page h2 {
            font-size: 1.8em;
            margin-top: 2.5em; /* Größerer Abstand für H2 */
            position: relative;
            display: inline-block; /* Damit ::before direkt darunter ist */
            padding-bottom: 0.2em;
        }
        #fronius-landing-page h2::before { /* Unterstrich für H2 */
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 2.5em; /* Länge des Unterstrichs */
            height: 3px;
            background-color: var(--fronius-primary);
            border-radius: 1px;
        }
        /* Angepasste H3 Stile */
        #fronius-landing-page h3 {
            font-size: 1.4em;
            color: var(--fronius-text-medium);
            font-weight: 600;
            margin-top: 2em;
            border-bottom: 1px solid var(--fronius-border-color);
            padding-bottom: 0.5em;
            margin-bottom: 1em;
        }
        /* Spezifische H3 für Produktkarten */
        #fronius-landing-page .product-card h3 {
             margin-top: 0; /* Kein oberer Rand in Karten */
             color: var(--fronius-light-blue); /* Helleres Blau für Karten-H3 */
             font-size: 1.5em;
             border-bottom: 1px solid var(--fronius-border-color);
             padding-bottom: 0.5em;
             margin-bottom: 1em;
        }
        #fronius-landing-page h4 {
            font-size: 1.1em;
            margin-top: 1.5em;
            margin-bottom: 0.5em;
            color: var(--fronius-text-medium);
            font-weight: 600;
        }
        /* Spezifische H4 für TOC */
        #fronius-landing-page .table-of-contents h4,
        #fronius-landing-page .floating-toc h4 { /* H4 in TOCs */
             margin-top: 0;
             margin-bottom: 1em;
             color: var(--fronius-text-highlight);
             font-size: 1.3em;
             padding-bottom: 0.5em;
             position: relative;
             display: inline-block;
             border-bottom: 2px solid transparent;
             border-image: linear-gradient(90deg, var(--fronius-primary), transparent) 1;
        }
         /* Spezifische H4 für Vorteil-Items (falls verwendet) */
         #fronius-landing-page .benefit-item h4 {
              margin-top: 0;
              font-size: 1.25em;
              color: var(--fronius-light-blue);
              margin-bottom: 0.8em;
              border-bottom: none; /* Kein Unterstrich hier */
              padding-bottom: 0;
         }
        /* Spezifische H4 in Produktkarten (z.B. für "Im Paket enthalten") */
        #fronius-landing-page .product-card h4 {
            margin-top: 1.2em;
            color: var(--fronius-very-light-blue); /* Noch helleres Blau für Unterüberschriften in Karten */
            font-weight: 600;
            font-size: 1.15em;
            border-bottom: none;
            padding-bottom: 0.3em;
            margin-bottom: 0.6em;
        }
        #fronius-landing-page .product-card h4::before { display: none; } /* Kein blauer Strich unter Karten-H4 */


        #fronius-landing-page p {
            margin-bottom: 1.3em;
            line-height: var(--fronius-line-height-body);
        }
        /* Letzter Absatz in bestimmten Containern ohne unteren Rand */
        #fronius-landing-page .benefit-item p:last-child,
        #fronius-landing-page .conclusion-section p:last-child,
        #fronius-landing-page .fronius-intro p:last-child {
            margin-bottom: 0;
        }
        /* Abstand für Text/Listen nach H4 in Produktkarten */
        #fronius-landing-page .product-card h4 + p,
        #fronius-landing-page .product-card h4 + ul {
            margin-bottom: 1em;
            margin-left: 0.5em; /* Leichte Einrückung */
        }
        /* Styling für Key-Value Paare in Produktkarten */
        #fronius-landing-page .product-card p strong:first-child {
             display: inline-block;
             min-width: 150px; /* Feste Breite für den Key */
             color: var(--fronius-text-medium);
             font-weight: 600;
             margin-right: 0.5em; /* Kleiner Abstand zum Value */
        }
        /* Styling für Preis */
        #fronius-landing-page .product-card .price {
            font-size: 1.3em;
            font-weight: bold;
            color: var(--fronius-accent-red);
            margin-top: 0.5em; /* Abstand zum vorherigen Element */
            margin-bottom: 1em; /* Abstand zum nächsten Element */
        }
        #fronius-landing-page .product-card .price-note {
            font-size: 0.85em;
            color: var(--fronius-text-dark);
            margin-top: -0.8em; /* Näher an den Preis rücken */
            margin-bottom: 1.5em;
        }


        /* === Hervorhebungen === */
        #fronius-landing-page strong {
            font-weight: 600;
            color: var(--fronius-text-highlight);
        }
        #fronius-landing-page .key-benefit,
        #fronius-landing-page .highlight {
            color: var(--fronius-accent-red); /* Rote Hervorhebung */
            font-weight: 600;
            position: relative;
            display: inline-block;
            padding-bottom: 2px;
        }
        #fronius-landing-page .key-benefit::after,
        #fronius-landing-page .highlight::after { /* Dezenter Unterstrich für Hervorhebungen */
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 100%;
            height: 1.5px;
            background: linear-gradient(90deg, var(--fronius-accent-red), transparent);
            opacity: 0.8;
        }
        #fronius-landing-page .key-term { /* Blaue Hervorhebung für Begriffe */
            color: var(--fronius-secondary);
            font-weight: 700;
        }

        /* === Listen === */
        #fronius-landing-page ul {
            list-style: none;
            padding-left: 0;
            margin-bottom: 1.5em;
        }
        /* Listen im Inhaltsverzeichnis ohne unteren Rand */
        #fronius-landing-page .table-of-contents ul,
        #fronius-landing-page .floating-toc ul {
             margin-bottom: 0;
        }
        #fronius-landing-page ul li {
            margin-bottom: 0.8em;
            padding-left: 1.8em; /* Einrückung für Listenpunkte */
            position: relative;
        }
        #fronius-landing-page ul li::before { /* Standard Listenpunkt */
            content: '•';
            color: var(--fronius-secondary); /* Blaue Farbe für Punkte */
            font-weight: bold;
            display: inline-block;
            position: absolute;
            left: 0.5em;
            top: 0.1em; /* Vertikale Ausrichtung anpassen */
            font-size: 1.2em;
        }
        /* Spezifische Listenpunkte (falls benötigt) */
        #fronius-landing-page .product-card ul li::before { /* Rote Punkte in Produktkarten */
             color: var(--fronius-accent-red);
        }
        /* Listenpunkte im Haupt-TOC */
        #fronius-landing-page .table-of-contents li {
             margin-bottom: 0.8em;
             padding-left: 2.2em; /* Mehr Platz für die Nummer */
             counter-increment: fronius-toc-counter;
             transition: transform 0.2s ease;
        }
        #fronius-landing-page .table-of-contents li::before {
             content: counter(fronius-toc-counter); /* Nummer anzeigen */
             left: 0;
             top: 50%;
             transform: translateY(-50%);
             width: 24px;
             height: 24px;
             background: var(--fronius-primary);
             color: var(--fronius-text-light);
             border-radius: 50%;
             display: flex;
             align-items: center;
             justify-content: center;
             font-size: 0.8em;
             font-weight: bold;
             transition: background-color 0.2s ease, box-shadow 0.2s ease;
             box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
        }
        /* Listenpunkte im Floating TOC (keine) */
        #fronius-landing-page .floating-toc li {
             margin-bottom: 10px;
             padding-left: 0;
        }
        #fronius-landing-page .floating-toc li::before { content: none; }
        /* Hover-Effekt für Haupt-TOC */
        #fronius-landing-page .table-of-contents li:hover { transform: translateX(3px); }
        /* Aktiver Zustand für Haupt-TOC */
        #fronius-landing-page .table-of-contents li.active-item::before,
        #fronius-landing-page .table-of-contents li:has(a.active)::before { /* :has() für moderne Browser */
             background-color: var(--fronius-accent-red);
             box-shadow: 0 0 8px var(--fronius-accent-red);
        }
        #fronius-landing-page ul li strong { color: var(--fronius-text-medium); }


        /* === Spezifische Abschnitt-Stylings === */
        #fronius-landing-page .fronius-intro { /* Intro-Box */
            font-size: 1.1em;
            color: var(--fronius-text-medium);
            margin-bottom: 3em;
            padding: 1.8em 2em;
            background: linear-gradient(135deg, rgba(49, 130, 206, 0.1), rgba(49, 130, 206, 0.05));
            border: none;
            border-radius: 12px;
            box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), inset 4px 0 0 var(--fronius-primary); /* Blauer linker Rand */
        }
        #fronius-landing-page .fronius-intro strong { color: var(--fronius-text-highlight); }

        /* Produktkarten-Stil */
        #fronius-landing-page article.product-card {
            margin-bottom: 2.5rem;
            padding: 1.8rem;
            background: var(--fronius-card-bg);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: 8px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
            transition: transform 0.4s ease, box-shadow 0.4s ease, border-color 0.4s ease, background-color 0.4s ease;
            overflow: hidden;
            opacity: 0; /* Für Animation */
            will-change: transform, opacity;
            transform: translate3d(0, 0, 0); /* Hardware-Beschleunigung */
        }
        #fronius-landing-page article.product-card.visible { /* Animationsklasse */
            animation: smoothFadeIn 0.8s ease forwards;
            animation-fill-mode: both;
        }
        #fronius-landing-page article.product-card:hover {
            transform: translateY(-8px) translate3d(0, 0, 0);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.35);
            border-color: rgba(255, 255, 255, 0.15);
            background-color: var(--fronius-card-bg-hover); /* Hover-Hintergrund */
        }

        /* Trennlinie zwischen Abschnitten */
        #fronius-landing-page .section-divider {
            height: 2px;
            background: linear-gradient(90deg, var(--fronius-border-color), transparent);
            margin: 3.5em 0 2em;
            width: 100%;
            border: none;
        }

        /* Hinweisbox-Stil */
        #fronius-landing-page .note {
            font-size: 0.95em;
            color: var(--fronius-text-medium);
            background-color: var(--fronius-card-bg);
            padding: 1.2em 1.5em;
            border-left: 5px solid var(--fronius-secondary); /* Blauer linker Rand */
            margin: 1.5em 0 2em;
            border-radius: 6px;
        }
        #fronius-landing-page .note strong { color: var(--fronius-text-highlight); }

        /* === Inhaltsverzeichnis (Haupt-TOC im Textfluss) === */
        #fronius-landing-page nav.table-of-contents { /* Explizit <nav> */
             background: linear-gradient(145deg, rgba(13, 21, 37, 0.95), rgba(25, 44, 74, 0.95));
             border: 1px solid rgba(255, 255, 255, 0.08);
             border-radius: 8px;
             padding: 1.8rem;
             margin: 3rem 0; /* Abstand nach Intro und vor nächstem Abschnitt */
             position: relative;
             box-shadow: 0 8px 20px rgba(0, 0, 0, 0.25);
        }
        #fronius-landing-page nav.table-of-contents ul {
             list-style-type: none;
             counter-reset: fronius-toc-counter; /* Zähler für Nummern initialisieren */
        }
        #fronius-landing-page nav.table-of-contents a { /* Links im Haupt-TOC */
             color: var(--fronius-text-medium);
             text-decoration: none;
             transition: color 0.2s ease, background-color 0.2s ease;
             display: inline-block;
             font-weight: 500;
             font-size: 1.05em;
             padding: 0.2em 0;
             position: relative;
             border-radius: 4px;
        }
        #fronius-landing-page nav.table-of-contents a::after { /* Unterstrich-Effekt bei Hover */
             content: '';
             display: block;
             position: absolute;
             bottom: -2px;
             left: 0;
             width: 0;
             height: 2px;
             background: var(--fronius-secondary);
             transition: width 0.3s ease;
        }
        #fronius-landing-page nav.table-of-contents a:hover,
        #fronius-landing-page nav.table-of-contents a:focus { color: var(--fronius-light-blue); }
        #fronius-landing-page nav.table-of-contents a:hover::after,
        #fronius-landing-page nav.table-of-contents a:focus::after { width: 100%; }
        #fronius-landing-page nav.table-of-contents a.active { /* Aktiver Link im Haupt-TOC */
             font-weight: 700;
             color: var(--fronius-accent-red);
             background-color: rgba(255, 77, 41, 0.1); /* Rötlicher Hintergrund */
             padding: 0.3em 0.6em; /* Etwas Padding für Hintergrund */
             margin-left: -0.6em; /* Negativer Rand, um Padding auszugleichen */
        }
        #fronius-landing-page nav.table-of-contents a.active::after { /* Unterstrich für aktiven Link */
             width: 100%;
             background: var(--fronius-accent-red);
        }


        /* === Floating TOC (Button und Menü) === */
        #fronius-landing-page .toc-toggle { /* Button bleibt Button */
            position: fixed;
            bottom: 80px; /* Abstand anpassen, falls Scroll-Top-Button auch da ist */
            right: 20px;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--fronius-primary) 0%, var(--fronius-highlight-blue) 100%);
            color: var(--fronius-text-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
            z-index: 1000;
            opacity: 0; /* Start unsichtbar */
            visibility: hidden;
            transform: scale(0.8);
            transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.2s ease, box-shadow 0.3s ease;
            border: none;
            padding: 0;
        }
        #fronius-landing-page .toc-toggle.visible { /* Klasse zum Einblenden */
            opacity: 1;
            visibility: visible;
            transform: scale(1);
        }
        #fronius-landing-page .toc-toggle:hover,
        #fronius-landing-page .toc-toggle:focus {
            background: linear-gradient(135deg, var(--fronius-light-blue) 0%, var(--fronius-primary) 100%);
            transform: translateY(-3px) scale(1.05);
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
            outline: none;
        }
        #fronius-landing-page .toc-toggle:focus-visible { /* Verbesserter Fokus-Stil */
            outline: 2px solid var(--fronius-accent-red);
            outline-offset: 2px;
        }
        #fronius-landing-page .toc-toggle svg { /* Icon im Button */
            width: 22px;
            height: 22px;
            stroke-width: 2.5;
        }

        #fronius-landing-page nav.floating-toc { /* Das schwebende Menü */
            position: fixed;
            bottom: 135px; /* Über dem Toggle-Button */
            right: 20px;
            width: 280px; /* Breite des Menüs */
            max-width: 85vw; /* Maximale Breite auf kleinen Screens */
            background-color: rgba(45, 55, 72, 0.98); /* Halbtransparenter Hintergrund */
            backdrop-filter: blur(5px); /* Weichzeichner-Effekt */
            border-radius: 8px;
            padding: 1.2em;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
            z-index: 990; /* Unter dem Toggle-Button, aber über dem Inhalt */
            border-left: 4px solid var(--fronius-primary); /* Blauer Rand links */
            transform: translateX(calc(100% + 50px)); /* Start außerhalb des Screens */
            transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1); /* Smooth Animation */
            max-height: 60vh; /* Maximale Höhe, damit es nicht zu lang wird */
            overflow-y: auto; /* Scrollbar bei Bedarf */
        }
        #fronius-landing-page nav.floating-toc.visible { transform: translateX(0); } /* Klasse zum Einblenden */
        #fronius-landing-page nav.floating-toc ul {
            list-style: none;
            padding-left: 0;
        }
        #fronius-landing-page nav.floating-toc a { /* Links im Floating TOC */
            color: var(--fronius-text-medium);
            text-decoration: none;
            font-size: 0.95em;
            display: block; /* Jeder Link eine Zeile */
            padding: 8px 12px;
            border-radius: 4px;
            transition: background-color 0.2s ease, color 0.2s ease;
        }
        #fronius-landing-page nav.floating-toc a::after { content: none; } /* Kein Unterstrich-Effekt hier */
        #fronius-landing-page nav.floating-toc a:hover,
        #fronius-landing-page nav.floating-toc a:focus {
            background-color: rgba(49, 130, 206, 0.2); /* Heller blauer Hintergrund bei Hover/Fokus */
            color: var(--fronius-primary);
            outline: none;
        }
        #fronius-landing-page nav.floating-toc a.active { /* Aktiver Link */
            font-weight: 700;
            color: var(--fronius-accent-red); /* Rote Hervorhebung */
            background-color: rgba(255, 77, 41, 0.15); /* Rötlicher Hintergrund */
        }
        #fronius-landing-page .toc-close { /* Schließen-Button im Menü */
            position: absolute;
            top: 10px;
            right: 10px;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            color: var(--fronius-text-medium);
            border-radius: 50%;
            transition: background-color 0.2s ease, transform 0.2s ease;
            background: none;
            border: none;
            font-size: 1.2em;
            line-height: 1;
        }
        #fronius-landing-page .toc-close:hover,
        #fronius-landing-page .toc-close:focus {
            background-color: rgba(255, 255, 255, 0.1); /* Leichter Hintergrund bei Hover */
            transform: scale(1.1);
            outline: none;
        }
        #fronius-landing-page .toc-close:focus-visible { /* Verbesserter Fokus-Stil */
             outline: 2px solid var(--fronius-accent-red);
             outline-offset: 1px;
        }

        /* === Vorteile-Sektion mit Grid (falls benötigt, hier als Beispiel) === */
        #fronius-landing-page .benefits-grid {
            display: grid;
            grid-template-columns: 1fr; /* Start mit einer Spalte */
            gap: 1.8em;
            margin: 2.5em 0;
        }
        @media (min-width: 768px) { #fronius-landing-page .benefits-grid { grid-template-columns: repeat(2, 1fr); } }
        @media (min-width: 1024px) { #fronius-landing-page .benefits-grid { grid-template-columns: repeat(3, 1fr); } }
        @media (min-width: 1200px) { #fronius-landing-page .benefits-grid { gap: 2.5em; } }

        #fronius-landing-page .benefit-item { /* Stil für einzelne Vorteile */
            background-color: var(--fronius-card-bg);
            padding: 1.5em 1.5em 1.5em 2em; /* Mehr Padding links für den Rand */
            border-radius: 8px;
            transition: transform 0.3s ease, box-shadow 0.3s ease, opacity 0.4s ease;
            position: relative;
            overflow: hidden;
            opacity: 0; /* Für Animation */
            will-change: transform, opacity;
            transform: translate3d(0, 0, 0);
        }
        #fronius-landing-page .benefit-item.visible { /* Animationsklasse */
            animation: smoothFadeIn 0.8s ease forwards;
            animation-fill-mode: both;
        }
        #fronius-landing-page .benefit-item::before { /* Farbiger linker Rand */
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 5px;
            height: 100%;
            background-color: var(--fronius-primary); /* Standardfarbe Blau */
            border-radius: 8px 0 0 8px;
        }
        /* Beispiel für unterschiedliche Farben (kann angepasst werden) */
        #fronius-landing-page .benefit-item:nth-child(1)::before { background-color: var(--fronius-accent-red); }
        #fronius-landing-page .benefit-item:nth-child(2)::before { background-color: var(--fronius-accent-green); }
        #fronius-landing-page .benefit-item:nth-child(3)::before { background-color: var(--fronius-accent-yellow); }
        #fronius-landing-page .benefit-item:hover {
            transform: translateY(-5px) translate3d(0, 0, 0);
            box-shadow: 0 8px 12px var(--fronius-shadow-color);
        }
        #fronius-landing-page .benefit-item p { font-size: 0.95em; }

        /* === Fazit/Tagline-Sektion === */
        #fronius-landing-page section.conclusion-section {
            margin-top: 3.5em;
            padding: 1.8em;
            background-color: rgba(49, 130, 206, 0.1); /* Leichter blauer Hintergrund */
            border-radius: 8px;
            border-left: 4px solid var(--fronius-primary); /* Blauer linker Rand */
            text-align: center;
        }
        #fronius-landing-page section.conclusion-section h2 { /* Falls H2 verwendet wird */
            margin-top: 0;
            border-bottom: none;
            margin-bottom: 0.8em;
        }
        #fronius-landing-page section.conclusion-section h2::before { display: none; }
        #fronius-landing-page section.conclusion-section p {
            font-size: 1.1em;
            color: var(--fronius-text-medium);
            font-style: italic;
            margin: 0;
        }

        /* === Links (Standard-Links im Text) === */
        /* Dieser Selektor schließt gezielt Buttons und Links aus, die spezielle Styles haben */
        #fronius-landing-page a:not(.table-of-contents a):not(.floating-toc a):not(.accordion-toggle):not(.scroll-top):not(.toc-toggle):not(.toc-close) {
            color: var(--fronius-secondary); /* Helles Blau für Links */
            text-decoration: none;
            transition: color 0.2s ease, text-decoration-color 0.2s ease;
            text-decoration: underline;
            text-decoration-color: transparent; /* Unterstrich erst bei Hover sichtbar */
            text-underline-offset: 3px; /* Abstand Unterstrich zum Text */
        }
        #fronius-landing-page a:not(.table-of-contents a):not(.floating-toc a):not(.accordion-toggle):not(.scroll-top):not(.toc-toggle):not(.toc-close):hover,
        #fronius-landing-page a:not(.table-of-contents a):not(.floating-toc a):not(.accordion-toggle):not(.scroll-top):not(.toc-toggle):not(.toc-close):focus {
            color: var(--fronius-light-blue); /* Noch helleres Blau bei Hover/Fokus */
            text-decoration-color: var(--fronius-light-blue); /* Unterstrich sichtbar machen */
        }
        #fronius-landing-page a:not(.table-of-contents a):not(.floating-toc a):not(.accordion-toggle):not(.scroll-top):not(.toc-toggle):not(.toc-close):focus-visible { /* Verbesserter Fokus-Stil */
            outline: 2px solid var(--fronius-accent-red); /* Fokus-Outline */
            outline-offset: 2px;
            border-radius: 2px;
        }

        /* === Akkordeon (falls benötigt) === */
        #fronius-landing-page .accordion {
             margin: 1.5em 0;
             border-radius: 8px;
             overflow: hidden;
        }
        #fronius-landing-page .accordion-toggle { /* Button zum Öffnen/Schließen */
             display: flex;
             justify-content: space-between;
             align-items: center;
             width: 100%;
             padding: 1em 1.5em;
             background-color: rgba(49, 130, 206, 0.15); /* Leicht blauer Hintergrund */
             color: var(--fronius-text-light);
             border: none;
             font-family: var(--fronius-heading-font);
             font-size: 1.1em;
             font-weight: 600;
             text-align: left;
             cursor: pointer;
             transition: background-color 0.3s ease;
             border-radius: 6px; /* Abgerundete Ecken für den Button */
             position: relative;
        }
        #fronius-landing-page .accordion-toggle:hover,
        #fronius-landing-page .accordion-toggle:focus {
             background-color: rgba(49, 130, 206, 0.25); /* Etwas dunkler bei Hover/Fokus */
             outline: none;
        }
        #fronius-landing-page .accordion-toggle:focus-visible { /* Verbesserter Fokus-Stil */
             outline: 2px solid var(--fronius-accent-red);
             outline-offset: 2px;
        }
        #fronius-landing-page .accordion-toggle .icon { /* Plus/Minus Icon */
             transition: transform 0.3s ease;
             flex-shrink: 0;
             margin-left: 10px;
             width: 20px;
             height: 20px;
             display: flex;
             align-items: center;
             justify-content: center;
             position: relative; /* Positionierung für ::before/::after */
        }
        #fronius-landing-page .accordion-toggle .icon::before,
        #fronius-landing-page .accordion-toggle .icon::after { /* Striche für Plus/Minus */
             content: '';
             position: absolute;
             background-color: var(--fronius-text-light);
             transition: transform 0.3s ease, opacity 0.3s ease; /* Opacity hinzugefügt */
             border-radius: 1px; /* Abgerundete Striche */
        }
        #fronius-landing-page .accordion-toggle .icon::before { /* Vertikaler Strich */
             width: 2px;
             height: 12px;
        }
        #fronius-landing-page .accordion-toggle .icon::after { /* Horizontaler Strich */
             width: 12px;
             height: 2px;
        }
        #fronius-landing-page .accordion-toggle.active .icon::before { /* Vertikalen Strich ausblenden */
             transform: rotate(90deg);
             opacity: 0;
        }
        #fronius-landing-page .accordion-content { /* Inhalt des Akkordeons */
             background-color: rgba(45, 55, 72, 0.5); /* Dunklerer, halbtransparenter Hintergrund */
             max-height: 0; /* Start geschlossen */
             overflow: hidden;
             transition: max-height 0.5s ease, padding 0.5s ease;
             border-radius: 0 0 6px 6px; /* Abrundung unten */
             padding: 0 1.5em; /* Padding erst bei Öffnung */
             box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1); /* Innerer Schatten oben */
        }
        #fronius-landing-page .accordion-content.active { /* Geöffneter Zustand */
             max-height: 1000px; /* Ausreichend Höhe für Inhalt (ggf. anpassen) */
             padding: 1.5em;
        }
        #fronius-landing-page .accordion-content h4 { /* Überschriften im Akkordeon */
             margin-top: 0.8em;
             color: var(--fronius-light-blue);
        }
        #fronius-landing-page .accordion-content p:last-child { margin-bottom: 0; }

        /* === Scroll-to-top Button === */
        #fronius-landing-page .scroll-top {
            position: fixed;
            bottom: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--fronius-primary) 0%, var(--fronius-highlight-blue) 100%);
            color: var(--fronius-text-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0; /* Start unsichtbar */
            visibility: hidden;
            transform: translateY(20px); /* Start leicht nach unten verschoben */
            transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.2s ease, box-shadow 0.3s ease;
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
            z-index: 1000;
            border: none;
            padding: 0;
            touch-action: manipulation; /* Für bessere Touch-Interaktion */
        }
        #fronius-landing-page .scroll-top.visible { /* Klasse zum Einblenden */
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        #fronius-landing-page .scroll-top:hover,
        #fronius-landing-page .scroll-top:focus {
            background: linear-gradient(135deg, var(--fronius-light-blue) 0%, var(--fronius-primary) 100%);
            transform: translateY(-3px) scale(1.05); /* Leichter Hover-Effekt */
            box-shadow: 0 6px 15px rgba(0, 0, 0, 0.4);
            outline: none;
        }
        #fronius-landing-page .scroll-top:focus-visible { /* Verbesserter Fokus-Stil */
            outline: 2px solid var(--fronius-accent-red);
            outline-offset: 2px;
        }
        #fronius-landing-page .scroll-top svg { /* Pfeil-Icon */
            width: 22px;
            height: 22px;
            stroke-width: 2.5;
        }

        /* === Animationen === */
        @keyframes smoothFadeIn {
            from { opacity: 0; transform: translate3d(0, 25px, 0); }
            to { opacity: 1; transform: translate3d(0, 0, 0); }
        }
        /* Verzögerte Animation für Elemente (falls benötigt) */
        #fronius-landing-page .product-card:nth-of-type(2).visible,
        #fronius-landing-page .benefits-grid .benefit-item:nth-child(2).visible { animation-delay: 0.15s; }
        #fronius-landing-page .product-card:nth-of-type(3).visible,
        #fronius-landing-page .benefits-grid .benefit-item:nth-child(3).visible { animation-delay: 0.3s; }
        /* Weitere Verzögerungen können hier hinzugefügt werden */

        /* === Responsive Anpassungen === */
        @media (min-width: 768px) { /* Tablet und größer */
            #fronius-landing-page .fronius-content-wrapper { padding: 2rem; }
             #fronius-landing-page nav.table-of-contents { max-width: 85%; margin-left: auto; margin-right: auto; }
            #fronius-landing-page h2 { font-size: 2em; }
            #fronius-landing-page h3 { font-size: 1.5em; }
            #fronius-landing-page .product-card h3 { font-size: 1.5em; } /* H3 in Karten */
            #fronius-landing-page h4 { font-size: 1.15em; }
            #fronius-landing-page .benefit-item h4 { font-size: 1.25em; } /* H4 in Vorteilen */
            #fronius-landing-page .banner-title h1 { font-size: 2.5em; }
        }
        @media (max-width: 767px) { /* Mobile Geräte */
            #fronius-landing-page { line-height: 1.6; }
            #fronius-landing-page h2 { font-size: 1.6em; }
            #fronius-landing-page h3 { font-size: 1.35em; }
            #fronius-landing-page .product-card h3 { font-size: 1.35em; }
            #fronius-landing-page h4 { font-size: 1.1em; }
            #fronius-landing-page .benefit-item h4 { font-size: 1.15em; }
            #fronius-landing-page .fronius-intro { font-size: 1em; padding: 1em 1.2em; }
            #fronius-landing-page .product-card,
            #fronius-landing-page .benefit-item { padding: 1.2em; } /* Weniger Padding auf Mobil */
             #fronius-landing-page .product-card h4 + p,
             #fronius-landing-page .product-card h4 + ul { margin-left: 0; } /* Keine Einrückung auf Mobil */
            #fronius-landing-page .benefit-item::before { width: 4px; }
            #fronius-landing-page .conclusion-section { padding: 1.2em; }
            #fronius-landing-page .conclusion-section p { font-size: 1em; }
             #fronius-landing-page .table-of-contents li { padding-left: 2em; margin-bottom: 0.7em; }
             #fronius-landing-page .table-of-contents li::before { width: 22px; height: 22px; font-size: 0.75em; }
            #fronius-landing-page .banner-title { bottom: 15px; right: 15px; max-width: 80%; }
            #fronius-landing-page .banner-title h1 { font-size: 1.8em; }
            #fronius-landing-page .logo-container img { max-height: 300px; }
            #fronius-landing-page .accordion-toggle { padding: 0.8em 1.2em; font-size: 1em; }
            #fronius-landing-page .accordion-content.active { padding: 1.2em; }
        }
        @media (max-width: 480px) { /* Sehr kleine Mobile Geräte */
            #fronius-landing-page .fronius-content-wrapper { width: 92%; padding: 1rem 0.8rem; margin-top: 1rem; margin-bottom: 1rem; }
            #fronius-landing-page h2 { font-size: 1.5em; }
            #fronius-landing-page h3 { font-size: 1.25em; }
            #fronius-landing-page .product-card h3 { font-size: 1.25em; }
            #fronius-landing-page h4 { font-size: 1.05em; }
            #fronius-landing-page .benefit-item h4 { font-size: 1.1em; }
            #fronius-landing-page .product-card,
            #fronius-landing-page .benefit-item { padding: 1.2em; }
            #fronius-landing-page .product-card p strong:first-child { min-width: 120px; }
            #fronius-landing-page .table-of-contents { padding: 1em; }
             #fronius-landing-page .table-of-contents li { padding-left: 1.8em; }
             #fronius-landing-page .table-of-contents li::before { width: 20px; height: 20px; font-size: 0.7em; }
            #fronius-landing-page nav.floating-toc { max-width: 90vw; padding: 1em; bottom: 125px; }
            #fronius-landing-page .toc-toggle { bottom: 70px; right: 15px; width: 45px; height: 45px; }
            #fronius-landing-page .scroll-top { bottom: 15px; right: 15px; width: 45px; height: 45px; }
            #fronius-landing-page .banner-title { bottom: 10px; right: 10px; max-width: 90%; padding: 8px 12px; }
            #fronius-landing-page .banner-title h1 { font-size: 1.5em; }
            #fronius-landing-page .logo-container img { max-height: 250px; }
            #fronius-landing-page .accordion-toggle { padding: 0.7em 1em; font-size: 0.95em; }
            #fronius-landing-page .accordion-content.active { padding: 1em; }
            #fronius-landing-page .accordion-toggle .icon { width: 16px; height: 16px; }
            #fronius-landing-page .accordion-toggle .icon::before { height: 10px; }
            #fronius-landing-page .accordion-toggle .icon::after { width: 10px; }
            #fronius-landing-page .accordion-toggle.active .icon::before { opacity: 0; transform: rotate(90deg); }
            /* Preis auf kleinen Screens anpassen */
            #fronius-landing-page .product-card .price { font-size: 1.2em; }
            #fronius-landing-page .product-card .price-note { font-size: 0.8em; }
        }

        /* === Reduced Motion Preferences === */
        @media (prefers-reduced-motion: reduce) {
            html { scroll-behavior: auto; }
            #fronius-landing-page *, #fronius-landing-page *::before, #fronius-landing-page *::after {
                animation-duration: 0.01ms !important; animation-iteration-count: 1 !important;
                transition-duration: 0.01ms !important; transition-delay: 0ms !important;
                animation-delay: 0ms !important; scroll-behavior: auto !important;
            }
            /* Wichtige UI-Übergänge beibehalten, aber kurz */
            #fronius-landing-page .toc-toggle, #fronius-landing-page .scroll-top, #fronius-landing-page nav.floating-toc {
                transition-duration: 0.1s !important; transition-property: opacity, visibility, transform;
            }
            #fronius-landing-page .accordion-content { transition-duration: 0.1s !important; }
            #fronius-landing-page .accordion-toggle .icon::before, #fronius-landing-page .accordion-toggle .icon::after { transition-duration: 0.1s !important; }
        }

        /* === Print Styles === */
        @media print {
            body { color: #000; background-color: #fff; font-size: 12pt; line-height: 1.4; }
            #fronius-landing-page { color: #000; background-color: #fff; box-shadow: none; border: none; padding: 0; margin: 0; font-family: serif; }
            #fronius-landing-page .fronius-content-wrapper { width: 100%; max-width: 100%; padding: 0; margin: 0; }
            #fronius-landing-page header[role="banner"], #fronius-landing-page .toc-toggle, #fronius-landing-page .scroll-top, #fronius-landing-page nav.floating-toc, #fronius-landing-page .section-divider, #fronius-landing-page nav.table-of-contents { display: none !important; } /* Main TOC auch ausblenden */
            #fronius-landing-page .accordion-toggle { background: none; color: #000; border-bottom: 1px solid #ccc; padding: 0.5em 0; }
            #fronius-landing-page .accordion-toggle .icon { display: none; }
            #fronius-landing-page .accordion-content { max-height: none !important; padding: 1em 0 !important; overflow: visible !important; background: none; box-shadow: none; }
            #fronius-landing-page a { color: #000 !important; text-decoration: underline !important; }
            #fronius-landing-page a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 90%; color: #555; }
            #fronius-landing-page a[href^="#"]::after { content: ""; }
            #fronius-landing-page article.product-card, #fronius-landing-page .benefit-item, #fronius-landing-page .fronius-intro, #fronius-landing-page .note, #fronius-landing-page section.conclusion-section {
                border: 1px solid #ccc !important; box-shadow: none !important; background: #fff !important; color: #000 !important;
                padding: 1em !important; margin-bottom: 1.5em !important; break-inside: avoid; border-left: none !important;
            }
            #fronius-landing-page .benefit-item::before { display: none; }
            #fronius-landing-page .product-card h4, #fronius-landing-page .product-card h4 + p, #fronius-landing-page .product-card h4 + ul { margin-left: 0; }
            #fronius-landing-page .product-card p strong:first-child { display: block; min-width: auto; margin-bottom: 0.2em; }
            #fronius-landing-page .product-card *, #fronius-landing-page .benefit-item *, #fronius-landing-page .fronius-intro *, #fronius-landing-page .note *, #fronius-landing-page section.conclusion-section * { color: #000 !important; }
            #fronius-landing-page .key-benefit, #fronius-landing-page .highlight, #fronius-landing-page .key-term { font-weight: bold !important; color: #000 !important; }
            #fronius-landing-page .key-benefit::after, #fronius-landing-page .highlight::after { display: none; }
            #fronius-landing-page h1, #fronius-landing-page h2, #fronius-landing-page h3, #fronius-landing-page h4 {
                color: #000 !important; font-family: sans-serif; margin-top: 1.5em; margin-bottom: 0.5em; border: none !important; page-break-after: avoid;
            }
            #fronius-landing-page h2::before { display: none; }
            #fronius-landing-page ul { padding-left: 20px; list-style: disc !important; margin-bottom: 1em; }
            #fronius-landing-page ul li { padding-left: 0; margin-bottom: 0.5em; }
            #fronius-landing-page ul li::before { content: none !important; }
            /* Preis im Druck ausblenden oder anpassen */
            #fronius-landing-page .product-card .price,
            #fronius-landing-page .product-card .price-note { display: none; }
        }