```css
* {
    box-sizing: border-box;
}


html {
    scroll-behavior: smooth;
}


body {

    margin: 0;

    font-family:
        Arial,
        Helvetica,
        sans-serif;

    background: #f4f4f4;

    color: #222;

    line-height: 1.6;

}


/* =====================================================
   HERO
===================================================== */

.hero {

    min-height: 100vh;

    display: flex;

    align-items: center;

    justify-content: center;

    text-align: center;

    padding: 30px;

    background-image:

        linear-gradient(
            rgba(0, 0, 0, 0.55),
            rgba(0, 0, 0, 0.55)
        ),

        url("images/lkw.jpg");

    background-size: cover;

    background-position: center;

    background-repeat: no-repeat;

}


.hero-content {

    width: 100%;

    max-width: 900px;

    color: white;

}


.hero h1 {

    margin: 0 0 20px;

    font-size: 54px;

    line-height: 1.15;

    text-shadow:
        2px 2px 7px
        rgba(0, 0, 0, 0.85);

}


.hero-subtitle {

    margin: 0 0 40px;

    font-size: 25px;

    text-shadow:
        1px 1px 5px
        rgba(0, 0, 0, 0.85);

}


/* =====================================================
   KONTAKT BUTTON
===================================================== */

.contact-button {

    display: inline-block;

    padding:
        17px
        38px;

    background: #f5a623;

    color: white;

    text-decoration: none;

    font-size: 20px;

    font-weight: bold;

    border-radius: 8px;

    transition:
        background 0.2s ease,
        transform 0.2s ease;

}


.contact-button:hover {

    background: #d98d0b;

    transform:
        translateY(-2px);

}


/* =====================================================
   KONTAKTFORMULAR
===================================================== */

.contact-section {

    width:
        calc(
            100% - 40px
        );

    max-width: 750px;

    margin:
        50px
        auto;

    padding: 35px;

    background: white;

    border-radius: 12px;

    box-shadow:
        0 5px 25px
        rgba(0, 0, 0, 0.15);

}


.contact-section h2 {

    margin-top: 0;

    font-size: 32px;

}


.contact-intro {

    margin-bottom: 30px;

    color: #555;

}


.form-group {

    margin-bottom: 20px;

}


.form-group label {

    display: block;

    margin-bottom: 8px;

    font-weight: bold;

}


.form-group input,
.form-group select,
.form-group textarea {

    width: 100%;

    padding: 14px;

    border:
        1px solid
        #ccc;

    border-radius: 6px;

    font-family:
        Arial,
        Helvetica,
        sans-serif;

    font-size: 16px;

}


.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {

    outline: none;

    border-color: #f5a623;

    box-shadow:
        0 0 0 3px
        rgba(245, 166, 35, 0.2);

}


.form-group textarea {

    min-height: 140px;

    resize: vertical;

}


/* =====================================================
   ABSENDEN
===================================================== */

.submit-button {

    width: 100%;

    padding: 16px;

    background: #f5a623;

    color: white;

    border: none;

    border-radius: 6px;

    font-size: 18px;

    font-weight: bold;

    cursor: pointer;

}


.submit-button:hover {

    background: #d98d0b;

}


.required-note {

    margin-top: 15px;

    color: #666;

    font-size: 14px;

}


/* =====================================================
   HONEYPOT
===================================================== */

.honeypot {

    position: absolute;

    left: -9999px;

    width: 1px;

    height: 1px;

    overflow: hidden;

}


/* =====================================================
   FOOTER
===================================================== */

footer {

    padding: 25px;

    text-align: center;

    background: #222;

    color: white;

}


/* =====================================================
   PHP MELDUNGSSEITEN
===================================================== */

.message-page {

    min-height: 100vh;

    display: flex;

    align-items: center;

    justify-content: center;

    padding: 30px;

    background: #f4f4f4;

}


.message-box {

    width: 100%;

    max-width: 650px;

    padding: 40px;

    background: white;

    border-radius: 12px;

    text-align: center;

    box-shadow:
        0 5px 25px
        rgba(0, 0, 0, 0.15);

}


.message-box h1 {

    margin-top: 0;

}


.message-box p {

    color: #555;

    font-size: 17px;

}


.message-success {

    border-top:
        6px
        solid
        #4caf50;

}


.message-error {

    border-top:
        6px
        solid
        #d32f2f;

}


.back-button {

    display: inline-block;

    margin-top: 20px;

    padding:
        13px
        25px;

    background: #f5a623;

    color: white;

    text-decoration: none;

    border-radius: 6px;

    font-weight: bold;

}


/* =====================================================
   MOBILE
===================================================== */

@media (
    max-width: 700px
) {


    .hero h1 {

        font-size: 36px;

    }


    .hero-subtitle {

        font-size: 19px;

    }


    .contact-section {

        width:
            calc(
                100% - 20px
            );

        padding: 25px;

        margin:
            20px
            auto;

    }


    .contact-section h2 {

        font-size: 27px;

    }


    .message-box {

        padding: 30px 20px;

    }

}
```