/* Основные стили */
    body {
        margin: 0;
        padding: 0;
        font-family: 'Inter', sans-serif;
        color: #333;
        display: flex;
        flex-direction: column;
        min-height: 100vh;
        background-color: #f5f5f5;
    }

    /* Шапка сайта поверх изображения */
    header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 20px 5%;
        z-index: 100;
        background: rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(5px);
    }

    .logo img {
        height: 50px;
        width: auto;
        filter: none;
    }

    nav ul {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 30px;
    }

    nav ul li a {
        text-decoration: none;
        color: white;
        font-weight: 500;
        transition: color 0.3s;
    }

    nav ul li a:hover {
        color: #ffcc00;
    }

    .main-content {
        flex: 1;
        padding: 100px 20px 20px; /* Отступ для фиксированного header */
        max-width: 800px;
        margin: 0 auto;
        width: 100%;
    }

    .progress-container {
        width: 100%;
        margin-bottom: 30px;
        display: flex;
        align-items: center;
        gap: 15px;
    }

    .progress-bar {
        height: 20px;
        flex-grow: 1;
        background-color: #e0e0e0;
        border-radius: 10px;
        overflow: hidden;
    }

    .progress-fill {
        height: 100%;
        background-color: #8B0000; /* Бордовый цвет */
        width: 0%;
        transition: width 0.5s ease;
    }

    .progress-percent {
        font-size: 18px;
        font-weight: bold;
        min-width: 40px;
        text-align: right;
    }

    .task-list {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    .task {
        background-color: white;
        border-radius: 10px;
        padding: 15px 20px;
        box-shadow: 0 2px 5px rgba(0,0,0,0.1);
        position: relative;
    }

    .task-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        cursor: pointer;
    }

    .task-title {
        font-size: 18px;
        font-weight: bold;
        margin: 0;
        flex-grow: 1;
    }

    .task-content {
        margin-top: 15px;
        padding-top: 15px;
        border-top: 1px solid #eee;
        display: none;
    }

    .task.active .task-content {
        display: block;
    }

    .task-lock {
        width: 20px;
        height: 20px;
        margin-left: 10px;
        color: #999;
    }

    .task.unlocked .task-lock {
        display: none;
    }

    .task-checkbox {
        display: flex;
        align-items: center;
        gap: 10px;
        margin-left: 15px;
    }

    .custom-checkbox {
        width: 20px;
        height: 20px;
        border: 2px solid #4CAF50;
        border-radius: 4px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
    }

    .custom-checkbox.checked {
        background-color: #4CAF50;
        color: white;
    }

    .checkbox-label {
        font-size: 14px;
        color: #666;
    }

    footer {
        background-color: #3E4B82;
        color: white;
        padding: 20px;
        text-align: center;
        width: 100%;
    }

    .footer-content {
        display: flex;
        justify-content: space-between;
        max-width: 1200px;
        margin: 0 auto;
    }

    .footer-section {
        flex: 1;
        padding: 0 10px;
    }

    .footer-section h3 {
        border-bottom: 1px solid #777;
        padding-bottom: 10px;
    }

    .support-text {
        font-style: italic;
        margin-top: 20px;
    }

    @media (max-width: 768px) {
        nav ul {
            gap: 15px;
            flex-wrap: wrap;
            justify-content: center;
        }

        header {
            flex-direction: column;
            padding: 15px;
        }

        .main-content {
            padding-top: 150px;
        }

        .progress-container {
            flex-direction: column;
            align-items: flex-start;
            gap: 8px;
        }

        .progress-bar {
            width: 100%;
        }
    }