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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f4f4f4;
}

.container {
    width: 90%;
    max-width: 1100px;
    margin: 0 auto;
}

header {
    background: #2c3e50;
    color: #fff;
    padding: 2rem 0;
    text-align: center;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.tagline {
    font-size: 1.2rem;
    opacity: 0.9;
}

nav {
    background: #34495e;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 2rem;
    padding: 1rem 0;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: bold;
    transition: color 0.3s;
}

nav a:hover {
    color: #f1c40f;
}

main {
    background: #fff;
    padding: 2rem;
    margin: 2rem auto;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

section {
    margin-bottom: 2rem;
}

h2 {
    color: #2c3e50;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #ecf0f1;
}

ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

address {
    background: #ecf0f1;
    padding: 1rem;
    border-radius: 5px;
    margin: 1rem 0;
    font-style: normal;
    line-height: 1.8;
}

.bank-account {
    font-family: monospace;
    background: #fff;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
}

form {
    margin-top: 1rem;
    background: #f9f9f9;
    padding: 1rem;
    border-radius: 5px;
}

input, textarea, button {
    width: 100%;
    padding: 0.8rem;
    margin: 0.5rem 0;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

button {
    background: #2c3e50;
    color: #fff;
    border: none;
    cursor: pointer;
    transition: background 0.3s;
    font-weight: bold;
}

button:hover {
    background: #f1c40f;
    color: #2c3e50;
}

.success {
    color: #27ae60;
    background: #e9f7ef;
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.error {
    color: #e74c3c;
    background: #fceaea;
    padding: 0.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    list-style: none;
}

footer {
    background: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 1rem 0;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    nav ul {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }
    main {
        padding: 1rem;
    }
}