/* Общие настройки */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    background: #121212;
    color: #E0E0E0;
}

/* Ссылки */
a {
    color: #1E90FF;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Хедер */
header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    background: #1F1F1F;
    border-bottom: 2px solid #2A2A2A;
    border-radius: 0 0 10px 10px;
}

header nav a {
    margin: 0 15px;
    color: #E0E0E0;
    font-weight: 500;
}

/* Логотип */
.logo {
    height: 60px;
    width: auto;
}

/* Главный контент */
main {
    padding: 30px 20px;
    background: #1A1A1A;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.5);
    margin-top: 20px;
}

/* Заголовки */
h1, h2 {
    color: #ffffff;
}

h1 {
    font-size: 2.2em;
    margin-bottom: 15px;
}
h2 {
    font-size: 1.6em;
    margin-top: 25px;
    margin-bottom: 10px;
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 12px 25px;
    background: linear-gradient(135deg, #1E90FF, #00BFFF);
    color: #fff;
    font-weight: bold;
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.3s ease;
    margin-top: 15px;
}

.btn:hover {
    transform: scale(1.05);
    background: linear-gradient(135deg, #00BFFF, #1E90FF);
}

/* Списки */
ul {
    padding-left: 20px;
}

/* Footer */
footer {
    text-align: center;
    padding: 15px;
    margin-top: 30px;
    background: #1F1F1F;
    border-top: 2px solid #2A2A2A;
    border-radius: 10px 10px 0 0;
}