body {
    font-family: "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    background-color: #f0f2f5;
    color: #333;
}

.top-banner {
    background-color: #d9534f;
    color: white;
    text-align: center;
    padding: 10px 0;
    font-size: 1.2em;
    font-weight: bold;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: transparent;
}

.section, .copy-button-container {
    background-color: white;
    border: 2px dashed #ccc;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
    border-radius: 8px;
    transition: transform 0.2s ease-in-out, box-shadow 0.2s ease-in-out;
}

.section:hover, .copy-button-container:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.section:last-child {
    margin-bottom: 0;
}

.section p {
    margin: 8px 0;
    line-height: 1.8;
    font-size: 16px;
}

.copy-button {
    background-color: #4285f4;
    color: white;
    border: none;
    padding: 12px 25px;
    font-size: 1em;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
    width: 100%;
    box-sizing: border-box;
}

.copy-button:hover {
    background-color: #3367d6;
}

.warning {
    text-align: center;
}

.tutorial h2 {
    font-size: 1.2em;
    font-weight: bold;
    text-align: center;
    margin-bottom: 10px;
}

.tutorial img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 10px auto;
    cursor: pointer;
    transition: transform 0.2s ease-in-out;
}

.tutorial img:hover {
    transform: scale(1.05);
}

.tutorial p {
    text-align: center;
    font-size: 14px;
    color: #666;
}

.conclusion h2 {
    font-size: 1.2em;
    font-weight: bold;
    text-align: center;
    margin-bottom: 10px;
}

.conclusion p {
    text-align: center;
}

.tutorial h2, .conclusion h2 {
    color: #c00;
}

.custom-alert {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 20px 30px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.custom-alert.show {
    opacity: 1;
    visibility: visible;
}

.alert-icon {
    background-color: #4CAF50;
    color: white;
    border-radius: 50%;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    margin-right: 15px;
}

.alert-text {
    font-size: 16px;
}

/* Responsive Design for Mobile Devices */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .section, .copy-button-container {
        padding: 15px;
        margin-bottom: 15px;
    }

    .section p {
        font-size: 14px;
    }

    .top-banner, .tutorial h2, .conclusion h2 {
        font-size: 1.1em;
    }

    .copy-button {
        padding: 15px 20px;
    }

    .custom-alert {
        padding: 15px 20px;
        width: 80%;
    }

    .alert-text {
        font-size: 14px;
    }
}