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

/* Body and basic setup */
body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f7f9fc; /* 淡灰色背景 */
    padding: 0;
    margin: 0;
}

/* Header */
header {
    background-color: #2c3e50;
    color: #fff;
    padding: 15px 0;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

header nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    padding: 0;
}

header nav ul li {
    margin: 0 20px;
}

header nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 18px;
    text-transform: uppercase;
    font-weight: bold;
}

header nav ul li a:hover {
    color: #f39c12;
    border-bottom: 2px solid #f39c12;
}

/* Hero Section */
#home {
    background: linear-gradient(to right, #3498db, #8e44ad);
    color: #fff;
    padding: 120px 20px;
    text-align: center;
}

#home .hero h1 {
    font-size: 3.5em;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

#home .hero p {
    font-size: 1.2em;
    margin-bottom: 30px;
    font-weight: 300;
}

.cta-button {
    background-color: #f39c12;
    color: #fff;
    padding: 14px 28px;
    text-decoration: none;
    font-size: 20px;
    border-radius: 30px;
    text-transform: uppercase;
    transition: background-color 0.3s ease, transform 0.3s ease;
    font-weight: bold;
}

.cta-button:hover {
    background-color: #e67e22;
    transform: scale(1.05);
}

/* Features Section */
#features {
    background-color: #fff;
    padding: 60px 20px;
    text-align: center;
}

#features h2 {
    font-size: 2.5em;
    margin-bottom: 40px;
    font-weight: 700;
    color: #34495e;
}

.feature {
    margin-bottom: 40px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 15px rgba(0, 0, 0, 0.1);
}

.feature h3 {
    font-size: 1.8em;
    color: #2c3e50;
    margin-bottom: 15px;
}

.feature p {
    font-size: 1.2em;
    color: #7f8c8d;
    font-weight: 300;
}

/* Pricing Section */
#pricing {
    background-color: #ecf0f1;
    padding: 60px 20px;
    text-align: center;
}

#pricing h2 {
    font-size: 2.5em;
    margin-bottom: 40px;
    font-weight: 700;
    color: #34495e;
}

.pricing-plan {
    background-color: #fff;
    padding: 40px;
    margin: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    display: inline-block;
    width: 28%;
    vertical-align: top;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-plan:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.pricing-plan h3 {
    font-size: 2.2em;
    color: #3498db;
    margin-bottom: 20px;
}

.pricing-plan p {
    font-size: 1.6em;
    color: #e67e22;
    margin-bottom: 20px;
    font-weight: 700;
}

.pricing-plan ul {
    list-style: none;
    margin-bottom: 30px;
}

.pricing-plan ul li {
    font-size: 1.1em;
    color: #7f8c8d;
    margin-bottom: 15px;
}

.pricing-plan a.cta-button {
    font-size: 18px;
    background-color: #3498db;
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 30px;
    color: #fff;
    font-weight: bold;
}

.pricing-plan a.cta-button:hover {
    background-color: #2980b9;
    transform: scale(1.05);
}

/* FAQ Section */
#faq {
    background-color: #fff;
    padding: 60px 20px;
    text-align: center;
}

#faq h2 {
    font-size: 2.5em;
    margin-bottom: 40px;
    font-weight: 700;
    color: #34495e;
}

.faq-item {
    margin-bottom: 30px;
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.1);
}

.faq-item h3 {
    font-size: 1.8em;
    color: #2c3e50;
    margin-bottom: 15px;
}

.faq-item p {
    font-size: 1.2em;
    color: #7f8c8d;
    font-weight: 300;
}

/* Contact Section */
#contact {
    background-color: #ecf0f1;
    padding: 60px 20px;
    text-align: center;
}

#contact h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
    font-weight: 700;
    color: #34495e;
}

form {
    max-width: 600px;
    margin: 0 auto;
}

form label {
    font-size: 1.1em;
    margin-bottom: 10px;
    display: block;
    text-align: left;
}

form input, form textarea {
    width: 100%;
    padding: 15px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    font-size: 1.1em;
    background-color: #f9f9f9;
}

form button.cta-button {
    background-color: #3498db;
    padding: 15px 30px;
    border: none;
    border-radius: 30px;
    font-size: 18px;
    color: #fff;
    text-transform: uppercase;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.3s ease;
}

form button.cta-button:hover {
    background-color: #2980b9;
    transform: scale(1.05);
}

/* Footer Section */
footer {
    background-color: #2c3e50;
    color: #fff;
    text-align: center;
    padding: 20px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .pricing-plan {
        width: 100%;
        margin-bottom: 20px;
    }

    #home {
        padding: 100px 20px;
    }

    #home .hero h1 {
        font-size: 2.8em;
    }

    #home .hero p {
        font-size: 1em;
    }

    header nav ul {
        flex-direction: column;
    }

    header nav ul li {
        margin: 10px 0;
    }

    #faq h2 {
        font-size: 2.2em;
    }
}