html, body {
    height: 100%;
    margin: 0;
}

/* 标题居中样式 */
.t-center {
    text-align: center !important;
}

.session-form__title {
    text-align: center !important;
}

@media (min-width: 1400px) {
    .container {
        max-width: 1200px !important;
    }
}

@media (max-width: 1399px) and (min-width: 1200px) {
    .container {
        max-width: 1000px !important;
    }
}

@media (max-width: 1199px) and (min-width: 992px) {
    .container {
        max-width: 900px !important;
    }
}

@media (max-width: 991px) {
    .container {
        max-width: 85% !important;
    }
}

/* FAQ 专用样式 */
.faq-container {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 30px;
    margin: 20px 0;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.faq-item {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    font-size: 16px;
    font-weight: 500;
    border: none;
    background: none;
    width: 100%;
    text-align: left;
    outline: none !important;
    box-shadow: none !important;
}

.faq-question:hover {
    color: #68CD80;
}

.faq-question .icon {
    width: 16px;
    height: 16px;
    transition: all 0.3s ease;
}

.faq-answer {
    padding: 0 20px 20px 20px;
    color: #f0f0f0;
    line-height: 1.6;
    font-size: 14px;
    display: none;
}

.faq-answer.show {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.faq-category {
    color: #68CD80;
    font-size: 18px;
    font-weight: bold;
    margin: 30px 0 20px 0;
    padding-bottom: 10px;
    border-bottom: 2px solid #68CD80;
}

.back-btn {
    background-color: #68CD80;
    color: white;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    margin-bottom: 20px;
}

.back-btn:hover {
    background-color: #5bb970;
    color: white;
    text-decoration: none;
    transform: translateY(-2px);
}

.contact-info {
    background: rgba(104, 205, 128, 0.2);
    border: 1px solid #68CD80;
    border-radius: 8px;
    padding: 20px;
    margin-top: 30px;
    text-align: center;
}

.contact-info h4 {
    color: #68CD80;
    margin-bottom: 15px;
}

.contact-info p {
    color: white;
    margin-bottom: 10px;
}

.email-link {
    color: #68CD80;
    cursor: pointer;
    text-decoration: underline;
}

.email-link:hover {
    color: #5bb970;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .faq-container {
        padding: 20px;
        margin: 10px 0;
    }

    .faq-question {
        padding: 15px;
        font-size: 15px;
    }

    .faq-answer {
        padding: 0 15px 15px 15px;
        font-size: 13px;
    }

    .faq-category {
        font-size: 16px;
        margin: 20px 0 15px 0;
    }
}

@media (max-width: 480px) {
    .container {
        max-width: 95% !important;
    }

    .faq-container {
        padding: 15px;
    }

    .faq-question {
        padding: 12px;
        font-size: 14px;
    }

    .faq-answer {
        padding: 0 12px 12px 12px;
    }
}