    <style>
        :root {
            --bg: #f5f7fb;
            --card-bg: #ffffff;
            --accent: #0055a5;
            --accent-light: #e1efff;
            --text: #111827;
            --muted: #6b7280;
            --radius: 12px;
            --shadow-soft: 0 18px 45px rgba(15,23,42,0.08);
            --max-width: 1100px;
        }

        *, *::before, *::after { box-sizing: border-box; }

        body {
            margin: 0;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            color: var(--text);
            background: var(--bg);
            line-height: 1.6;
        }

        a { color: inherit; text-decoration: none; }

        header {
            background: linear-gradient(135deg, #0f172a, #1d4ed8);
            color: white;
            padding: 20px 16px 80px;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 16px;
        }

        .brand-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            margin-bottom: 32px;
            font-size: 14px;
            opacity: 0.9;
            flex-wrap: wrap;
        }

        .brand-title {
            font-weight: 600;
            letter-spacing: 0.04em;
            text-transform: uppercase;
        }

        .hero {
            display: grid;
            grid-template-columns: minmax(0, 1.7fr) minmax(0, 1.3fr);
            gap: 32px;
            align-items: center;
        }

        .hero h1 {
            font-size: clamp(28px, 4vw, 38px);
            margin: 0 0 12px;
        }

        .hero p.lead {
            margin: 0 0 18px;
            font-size: 16px;
            max-width: 34rem;
            opacity: 0.95;
        }

        .hero-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 18px;
        }

        .badge {
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 4px 10px;
            border-radius: 999px;
            border: 1px solid rgba(255,255,255,0.35);
            background: rgba(15,23,42,0.35);
            backdrop-filter: blur(6px);
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: 999px;
            padding: 10px 18px;
            font-size: 14px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: transform 0.12s ease, box-shadow 0.12s ease, background 0.12s ease;
            white-space: nowrap;
        }

        .btn-primary {
            background: #fbbf24;
            color: #1f2933;
            box-shadow: 0 14px 35px rgba(0,0,0,0.15);
        }

        .btn-primary:hover {
            transform: translateY(-1px);
            box-shadow: 0 18px 40px rgba(0,0,0,0.2);
        }

        .btn-outline {
            background: transparent;
            border: 1px solid rgba(255,255,255,0.6);
            color: white;
        }

        .hero-note {
            font-size: 13px;
            opacity: 0.8;
        }

        .hero-card {
            background: rgba(15,23,42,0.75);
            border-radius: 18px;
            padding: 18px 18px 16px;
            box-shadow: 0 20px 40px rgba(15,23,42,0.7);
        }

        .hero-card h2 {
            font-size: 18px;
            margin: 0 0 4px;
        }

        .hero-card p {
            margin: 0 0 12px;
            font-size: 13px;
            opacity: 0.9;
        }

        .hero-meta {
            font-size: 13px;
            display: grid;
            gap: 6px;
            margin-bottom: 10px;
        }

        .hero-meta strong {
            font-weight: 600;
        }

        main {
            margin-top: -40px;
            padding-bottom: 60px;
        }

        .cards-section {
            margin-bottom: 40px;
        }

        .section-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 18px;
            flex-wrap: wrap;
            gap: 8px;
        }

        .section-header h2 {
            font-size: 20px;
            margin: 0;
        }

        .section-header p {
            margin: 0;
            font-size: 14px;
            color: var(--muted);
            max-width: 36rem;
        }

        .card-surface {
            background: var(--card-bg);
            border-radius: 18px;
            padding: 20px;
            box-shadow: var(--shadow-soft);
        }

        .courses-grid {
            display: grid;
            grid-template-columns: repeat(3, minmax(0, 1fr));
            gap: 18px;
        }

        .course-card {
            border-radius: 14px;
            padding: 14px 14px 16px;
            border: 1px solid #e5e7eb;
            background: linear-gradient(135deg, #ffffff, #f9fafb);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .course-tag {
            font-size: 11px;
            text-transform: uppercase;
            color: #6b7280;
            letter-spacing: 0.06em;
            margin-bottom: 6px;
        }

        .course-card h3 {
            font-size: 16px;
            margin: 0 0 6px;
        }

        .course-card p {
            font-size: 13px;
            margin: 0 0 10px;
            color: #4b5563;
        }

        .course-meta {
            font-size: 12px;
            color: #6b7280;
            margin-bottom: 10px;
        }

        .course-meta span {
            display: inline-block;
            margin-right: 10px;
        }

        .course-actions {
            margin-top: auto;
        }

        .btn-pill {
            border-radius: 999px;
            border: 1px solid #d1d5db;
            padding: 6px 12px;
            font-size: 12px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: white;
            cursor: pointer;
            transition: background 0.12s ease, transform 0.12s ease, box-shadow 0.12s ease;
        }

        .btn-pill:hover {
            background: #eff6ff;
            transform: translateY(-1px);
            box-shadow: 0 10px 24px rgba(15,23,42,0.08);
            border-color: #bfdbfe;
        }

        .calendar-note {
            font-size: 13px;
            color: var(--muted);
            margin-bottom: 10px;
        }

        .calendar-wrapper {
            border-radius: 16px;
            overflow: hidden;
            border: 1px solid #e5e7eb;
            background: #000;
        }

        .calendar-iframe {
            display: block;
            width: 100%;
            min-height: 640px;
            border: none;
        }

        .steps {
            margin-top: 18px;
            font-size: 13px;
            color: var(--muted);
        }

        .steps ol {
            padding-left: 18px;
            margin: 6px 0 0;
        }

        footer {
            padding: 22px 16px 28px;
            font-size: 12px;
            color: #9ca3af;
            text-align: center;
        }

        footer a {
            color: inherit;
            text-decoration: underline;
            text-decoration-style: dotted;
        }

        @media (max-width: 900px) {
            .hero {
                grid-template-columns: 1fr;
            }
            header {
                padding-bottom: 52px;
            }
            main {
                margin-top: -26px;
            }
            .courses-grid {
                grid-template-columns: repeat(2, minmax(0, 1fr));
            }
        }

        @media (max-width: 640px) {
            .brand-row {
                flex-direction: column;
                align-items: flex-start;
            }
            .courses-grid {
                grid-template-columns: 1fr;
            }
            .card-surface {
                padding: 16px;
            }
            .calendar-iframe {
                min-height: 520px;
            }
        }

        /* Anti-Spam Kreise */
#mouseCircle {
    position: fixed;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 0, 0, 0.6);
    pointer-events: none;
    z-index: 9999;
}

#blueCircle {
    position: absolute;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(0, 0, 255, 0.6);
    color: #fff;
    font-size: 0.9rem;
    border: 2px solid #fff;
    text-align: center;
    line-height: 70px;
    user-select: none;
    z-index: 9999;
    pointer-events: none;
}

/* Honeypot-Feld verstecken */
.hp-hide {
    display: none;
}

/* Basis-Formularstyles, falls noch nicht vorhanden */
.form-group {
    margin-bottom: 0.8rem;
}
.form-group label {
    font-weight: 500;
    font-size: 0.9rem;
}
.form-control {
    width: 100%;
    padding: 0.45rem 0.6rem;
    border-radius: 8px;
    border: 1px solid #d1d5db;
    font-size: 0.9rem;
}
textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* Alerts */
.alert {
    padding: 0.75rem 0.9rem;
    border-radius: 8px;
    margin-bottom: 0.9rem;
    font-size: 0.9rem;
}
.alert-danger {
    background: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}
.alert-success {
    background: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}

    </style>