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


body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #eef1f5;
    color: #1f2937;
}


.hero {
    background: linear-gradient(135deg, #111827, #374151);
    color: white;
    padding: 70px 20px;
    text-align: center;
}


.hero h1 {
    font-size: 3rem;
    margin: 0 0 15px;
}


.hero p {
    font-size: 1.2rem;
    opacity: .9;
}


main {
    max-width: 1100px;
    margin: auto;
    padding: 30px 20px;
}


.welcome {
    background: white;
    padding: 30px;
    border-radius: 18px;
    margin-bottom: 30px;
    box-shadow: 0 8px 25px rgba(0,0,0,.08);
}


.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
    gap: 25px;
}


.card {
    background: white;
    padding: 35px 30px;
    border-radius: 18px;

    text-decoration: none;
    color: inherit;

    box-shadow: 0 8px 25px rgba(0,0,0,.08);

    transition: transform .2s, box-shadow .2s;
}


.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0,0,0,.15);
}


.icon {
    font-size: 45px;
}


.card h3 {
    font-size: 1.5rem;
}


.card p {
    line-height: 1.6;
    color: #4b5563;
}


.card span {
    display: inline-block;
    margin-top: 15px;
    font-weight: bold;
    color: #2563eb;
}


.disabled {
    opacity: .55;
}


.disabled span {
    color: #6b7280;
}


footer {
    text-align: center;
    padding: 30px;
    color: #6b7280;
}

/* Upload Formular */

.upload-container {
    max-width: 700px;
    margin: 40px auto;
    background: white;
    padding: 35px;
    border-radius: 18px;
    box-shadow: 0 8px 25px rgba(0,0,0,.08);
}

form label {
    display: block;
    margin-top: 20px;
    margin-bottom: 8px;
    font-weight: bold;
}

form input[type="text"],
form textarea,
form input[type="file"] {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #ccc;
}

textarea {
    resize: vertical;
}

.progress-container {
    width: 100%;
    height: 30px;
    background: #ddd;
    border-radius: 15px;
    margin: 25px 0;
    overflow: hidden;
}

#progressBar {
    height: 100%;
    width: 0%;
    background: #2563eb;
    color: white;
    text-align: center;
    line-height: 30px;
    transition: width .2s;
}

button {
    width: 100%;
    padding: 15px;
    margin-top: 20px;
    border: 0;
    border-radius: 12px;
    background: #2563eb;
    color: white;
    font-size: 1.2rem;
}

input[type="text"],
textarea,
select,
input[type="file"] {
    width: 100%;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #ccc;
    font-size: 1rem;
}
```