/* Smartphone Specific Styles */
/* This file contains styles specifically for mobile devices (max-width: 768px) */

/* Base Mobile Adjustments */
html {
    font-size: 14px;
}

body {
    overflow-x: hidden;
}

html {
    overflow-x: hidden;
}

.container {
    padding: 0 1rem;
}

/* Video Fallback Styles for Mobile */
.video-fallback {
    width: 100%;
    max-width: 560px;
    height: 200px;
    background: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
}

.fallback-content {
    text-align: center;
    color: #666;
    padding: 1rem;
}

.fallback-content p {
    margin-bottom: 0.5rem;
    font-size: 0.8rem;
}

.fallback-content p:last-child {
    margin-bottom: 0;
    font-size: 0.7rem;
    color: #999;
}

/* Typography Adjustments for Mobile */
h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.75rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

h5 {
    font-size: 1.125rem;
}

h6 {
    font-size: 1rem;
}

p {
    font-size: 0.875rem;
}

/* Button Adjustments */
.btn {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    width: 100%;
    max-width: 300px;
}

.btn_large {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

/* Section Spacing */
section {
    padding: 2rem 0;
    /* min-height: 100vh; */
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.section_header {
    margin-bottom: 1.5rem;
}

.container_title {
    margin-bottom: 1.5rem;
}

.section_title {
    font-size: 1.75rem;
    margin-bottom: 2.5rem;
}

.section_subtitle {
    font-size: 1.3rem;
    padding: 0 1rem;
}

.actual_results .container>div:nth-child(2) {
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.actual_results .container>div:nth-child(2) span {
    display: block;
    font-size: 0.875rem;
    color: #333;
    line-height: 1.6;
    margin-bottom: 0.375rem;
}

/* Header Mobile Styles */
.header {
    padding: 0.5rem 0;
}

.header_content {
    gap: 1rem;
    padding: 0.5rem 0;
}

.logo img {
    height: 2.5rem;
}

.nav {
    width: 100%;
}

.nav_list {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
}

.nav_link {
    display: block;
    padding: 0.5rem;
    border-radius: 0.25rem;
    background-color: #f8f9fa;
}

.header_cta {
    width: 100%;
    text-align: center;
}

/* FV Section Mobile */
.fv {
    min-height: 148vw;
    padding:0;
    position: relative;
}
.fv_buttons {
    position: absolute;
    top: 75%;
    left: 15%;
}

.fv_buttons img {
    width: 80%;
    margin-top: 20px;
}

/* FV Carousel Mobile Styles */
.fv_carousel {
    width: 100%;
    overflow: hidden;
    padding: 0;
    margin: 0;
}

.carousel_container {
    width: 100%;
    overflow: hidden;
    padding: 0;
    margin: 0;
}

.marquee {
    white-space: nowrap;
    overflow: hidden;
}


.course_image {
    height: 70px;
    margin-right: -5px;
}


/* About Section Mobile */
.about {
    position: relative;
    z-index: 10;
}

.about_image {
    display: grid;
    gap: 2rem;
}

.about_image img {
    width: 75%;
}

/* Propose Section Mobile */
.propose_grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
    max-width: 100%;
    width: 100%;
    justify-items: center;
}

.propose_item {
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem;
    gap: 0.75rem;
}

.propose_content p{
    /* display: flex;
    flex-direction: column;
    align-items: center;
    text-align: left;
    width: 100%; */
    /* text-align: center; */
    width: 83%;
    max-width: 600px;
    margin: 0 auto;
    padding: 0 1rem;
}
.propose .container {
    width: unset;
    margin: unset;
}

.item_left {
    font-size: 0.875rem;
    text-align: left;
    width: 100%;
    max-width:unset;
}

.item_right {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    margin-left: 0;
    align-self: flex-start;
    width: 240px;
}

.propose_item:nth-child(1) .item_right {
    background-color: #666;
}

.propose_item:nth-child(2) .item_right {
    background: linear-gradient(to right, #666 80%, #e74c3c00 20%);
}

.propose_item:nth-child(3) .item_right {
    background: linear-gradient(to right, #666 70%, #e74c3c00 30%);
}

/* Flow1 Section Mobile */
.flow_subtitle {
    text-align: center;
    font-size: 1rem;
    color: #666;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.flow1_steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 3rem;
    position: relative;
    align-items: center;
}

.flow1_step {
    padding: 1rem;
}

.flow1_step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: unset;
    bottom: -2rem;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 4rem;
    background-color: #000000;
    z-index: 1;
}

.flow1_icon {
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
}

.flow1_icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.flow1_content {
    background-color: white;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: relative;
    z-index: 2;
    max-width: 280px;
}

.flow1_title {
    color: #333;
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.flow1_description {
    color: #666;
    line-height: 1.5;
    font-size: 0.8rem;
}

/* Flow Documents Section Mobile */
.flow_documents {
    margin-top: 3rem;
}

.documents_intro {
    text-align: center;
    margin-bottom: 1.5rem;
    padding: 0 53px;
}

.documents_intro p {
    font-size: 1.6rem;
    font-weight: bold;
    color: #333;
}

.documents_content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.documents_image {
    order: 1;
}

.documents_image img {
    width: 100%;
    height: auto;
    max-width: 300px;
    margin: 0 auto;
    display: block;
}

.documents_list {
    order: 2;
    line-height: 40px;
}

.documents_list ol {
    list-style: none;
    counter-reset: item;
    padding: 0;
}

.documents_list li {
    counter-increment: item;
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 1.5rem;
    color: #333;
}

.documents_list li::before {
    content: counter(item, decimal-leading-zero);
    position: absolute;
    left: 0;
    top: 0;
    width: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
}

/* Banner Mobile */
.banner {
    background-image: url('../images/banner_background_sp.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 300px;
    display: flex;
    align-items: center;
}

.banner_title {
    font-size: 1.75rem;
    margin-bottom: 0.75rem;
}

.banner_subtitle {
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* Banner Button Box Styles for SP */
.banner .container {
    font-size: 1.5rem;
}

.banner .container span span {
    text-decoration: underline;
    text-decoration-color: #FFFF21;
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

.banner_btn_box {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-top: 1.5rem;
}

.banner_btn_box img {
    max-width: 250px;
    width: 100%;
    height: auto;
    /* No hover effects on mobile */
}

/* Features Section Mobile */
.features {
    min-height: auto;
    padding: 2rem 0;
}

.features_grid {
    grid-template-columns: 1fr;
    gap: 2rem;
    max-width: 100%;
    margin: 0 auto;
}

.feature_item {
    padding: 2rem;
    margin-top: 1.5rem;
}

.module-number {
    position: absolute;
    top: 0;
    left: 0;
    background: #3e3a39;
    border-radius: 0.5rem;
    color: white;
    padding: 6px 12px;
    font-size: 10px;
    font-weight: bold;
    text-align: center;
    z-index: 10;
}

.module-number p:first-child {
    font-size: 10px;
    margin: 0;
    line-height: 1;
}

.module-number p:last-child {
    font-weight: bold;
    font-size: 1.8rem;
    line-height: 1;
    margin: 3px 0 0 0;
}

.feature_content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    margin-top: 35px;
}

.feature_item:nth-child(2) .feature_title, .feature_item:nth-child(1) .feature_title, .feature_item:nth-child(3) .feature_title {
    margin: 0;
}

.feature_item:nth-child(1) .feature_title, .feature_item:nth-child(3) .feature_title {
    margin: unset;
    margin-top: 40px;
    margin-bottom: -20px;
}

.feature_item:nth-child(3) .feature_title {
    display: grid;
}

.feature_item:nth-child(3) .feature_content {
    margin-top: 35px;
    flex-direction: column;
}

.feature_text {
    order: 2;
}

.feature_title {
    color: #333;
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 0.75rem;
    line-height: 1.3;

    text-align: center;

}

.feature_description {
    color: #333;
    line-height: 1.6;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.feature_description_small {
    color: #333;
    line-height: 1.6;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.feature_list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature_list li {
    color: #333;
    margin-bottom: 0.375rem;
    font-size: 1rem;
    line-height: 1.5;
}

.feature_icon {
    order: 1;
    text-align: center;
}

.feature_icon img {
    width: 150px;
    height: auto;
}

.feature_stats {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    /* flex-wrap: wrap; */
    flex-direction: unset;
}

.stat_item {
    text-align: center;
    position: relative;
    padding: 0.5rem;
}

.stat_item img {
    max-width: 100%;
}

.stat_item::before {
    left: 10px;
}

.stat_item::after {
    right: 10px;
}

.stat_label {
    font-size: 0.75rem;
    color: #666;
    margin-bottom: 0.25rem;
}

.stat_value {
    font-size: 1.25rem;
    font-weight: bold;
    color: #333;
}

/* Feature 01 and 03 specific styling for mobile - column-reverse */

.feature_item:nth-child(3) .feature_icon {
    order: 1;
}

.feature_item:nth-child(3) .feature_text {
    order: 2;
}

/* Solution Section Mobile */
.solution .section_title{
    max-width: 282px;
}
.solution_points {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 100%;
    margin: 0 auto;
}

.solution_point {
    background-color: white;
    padding: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.point_label {
    background-color: #666;
    color: white;
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: bold;
    text-align: center;
    margin-bottom: 0.75rem;
    display: inline-block;
}

.point_english_subtitle {
    color: #999;
    font-size: 1.2rem;
    margin-top: 0px;
    font-family: Arial, Helvetica, sans-serif;
}

.point_title {
    color: #333;
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.point_description {
    color: #333;
    line-height: 1.6;
    font-size: 0.875rem;
}

/* Genre Section Mobile */
.genre_grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px 0px;

}

.genre_grid img {
    height: 50px;
}

/* Actual Results Mobile */
.actual_results {
    min-height: auto;
    padding: 2rem 0;
}

.works_lists {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 100%;
    margin: 0 auto;
}

.list {
    background-color: white;
    overflow: hidden;
}

.video {
    position: relative;
    width: 100%;
    height: 180px;
    overflow: hidden;
    padding: 20px 20px 0px 20px;
}

.video iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.title {
    padding: 0.75rem 20px;
    font-size: 1.2rem;
    font-weight: 600;
    /* border-bottom: 1px solid #eee; */
}

.tags {
    padding: 0.5rem 20px 0.75rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}

.tags span {
    background-color: #f8f9fa;
    color: #666;
    padding: 0.1875rem 0.5rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 500;
}

.results_grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.result_item {
    padding: 1.5rem;
}

.result_number {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
}

.result_title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.result_description {
    font-size: 0.875rem;
}

/* Price Section Mobile */
.price_grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    max-width: 400px;
}

/* Price */
.price img {
    width: 90%;
}

/* Flow2 Section Mobile */
.flow2 {
    min-height: auto;
    padding: 2rem 0;
}
.flow2 .container{
    max-width: 95%;
}
.flow2_steps {
    grid-template-columns: 1fr;
    gap: 5rem;
    width: 100%;
    margin: 0 auto;
}

.flow2_step {
    position: relative;
    padding: 1.5rem 1rem;
    display: flex;
    gap: 2rem;
    flex-direction: row;
    align-items: center;
    border: 2px solid #333;
    box-shadow: none;
    align-items: center;
}

.flow2_step:not(:last-child)::after {
    background: unset;
}

.flow2_step:not(:last-child)::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    top: 110%;
    transform: translateX(-50%);
    width: 25px;
    height: 25px;
    background: url(../images/triangle.png);
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 10;
}

.flow2_content {
    flex: 1;
}

.flow2_step_label {
    position: unset;
    background-color: unset;
    width: 100%;
    color: #666666;
    padding: 0.4rem 0px;
    border-radius: 15px;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.75rem;
    display: flex;
    text-align: center;
    transform: unset;
}

.flow2_step_label span {
    font-size: unset;
    font-weight: bold;
}

.flow2_icon {
    height: auto;
}

.flow2_icon img {
    width: 5rem;
    height: auto;
    margin-bottom: 1rem;
}

.flow2_title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
    text-align: left;
}

.flow2_description {
    font-size: 1.2rem;
    text-align: left;
}

.flow2_step_special {
    background-color: #354C9F;
    color: white;
    border-radius: 8px;
}

.flow2_step_special .flow2_title {
    color: white;
}

.flow2_step_special .flow2_description {
    color: white;
}

.flow2_step_special .flow2_step_label {
    color: white;
}

/* Q&A Section Mobile */
.qa {
    min-height: auto;
    padding: 2rem 0;
}

.qa_item {
    margin-bottom: 0.75rem;
}

.qa_item dt {
    padding: 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.qa_item_q {
    display: flex;
    justify-content: center;
    font-weight: bold;
    font-size: 1.6rem;
    flex-shrink: 0;
    align-items: center;

}

.qa_item_text {
    color: #1e3a8a;
    font-weight: 500;
    font-size: 1.2rem;
    flex: 1;
    margin: 0;
    padding: 1rem 0;
}

.qa_item_mark {
    color: #007bff;
    font-size: 1.25rem;
    font-weight: bold;
    flex-shrink: 0;
    transition: transform 0.3s ease;
}

.qa_item.active .qa_item_mark {
    transform: rotate(45deg);
}

.qa_item dd {
    padding: 0 1rem;
    margin: 0;
    display: none !important;
    border-top: 1px solid #e5e7eb;
}

.qa_item_a {
    font-weight: bold;
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.qa_item dd div {
    color: #374151;
    line-height: 1.6;
    font-size: 0.8rem;
    margin-left: 0;
}

/* Promise Section Mobile Styles */
.triangle-img {
    display: block;
    margin: 1.5rem auto;
    width: auto;
    height: auto;
}

.propose_box {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.promise-text {
    background-color: #0C2497;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    padding: 1.5rem 1rem;
    text-align: center;
    box-sizing: border-box;
    overflow-x: hidden;
}

.promise-text span {
    color: white;
    font-weight: 500;
    margin: 0;
    line-height: 1.4;
}
.promise-text span b{
    font-size: 1.2rem;
}
.promise-text p:first-child{
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Footer Mobile */
.footer {
    background-color: #3E3A39;
    color: white;
    padding: 2rem 0 1rem;
}

.footer_content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.footer_logo img {
    height: 2rem;
    margin-bottom: 0.75rem;
}

.footer_links {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    align-items: center;
}

.footer_link {
    color: white;
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.3s ease;
}

.footer_copyright {
    color: white;
    margin: 0;
    font-size: 0.75rem;
}

/* Mobile-specific utility classes */
.mobile_hidden {
    display: none;
}

.mobile_visible {
    display: block;
}

/* Touch-friendly adjustments */
.btn {
    min-height: 44px;
    /* iOS recommended touch target size */
}

.btn_primary img {
    width: 15%;
    float: right;
}

.nav_link {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile navigation improvements - removed duplicate styles */

/* Mobile navigation toggle functionality */
@media (max-width: 768px) {
    .header_content {
        position: relative;
    }

    /* Override PC styles that hide navigation on mobile */
    .nav {
        display: block !important;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        border-radius: 0.5rem;
        margin-top: 0.5rem;
        padding: 1rem;
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        min-height: auto;
        width: calc(100% - 2rem);
        margin-left: 1rem;
        margin-right: 1rem;
    }

    .nav.nav_mobile_active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .btn_primary {
        display: block;
        background: none;
        border: none;
        cursor: pointer;
        padding: 0.5rem;
        z-index: 1000;
        position: relative;
    }

    .nav_list {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        text-align: center;
        padding: 0;
        margin: 0;
        list-style: none;
        width: 100%;
    }

    .nav_item {
        width: 100%;
        margin: 0;
        padding: 0;
    }

    .nav_link {
        display: block !important;
        padding: 1rem 0.75rem;
        border-radius: 0.5rem;
        background-color: #f8f9fa;
        color: #333 !important;
        text-decoration: none;
        font-weight: 500;
        transition: all 0.3s ease;
        width: 100%;
        box-sizing: border-box;
        cursor: pointer;
        min-height: 44px;
        line-height: 1.4;
    }

    .nav_link:hover {
        background-color: #e9ecef;
        color: #007bff !important;
        transform: translateY(-1px);
    }

    .nav_link:active {
        background-color: #dee2e6;
        transform: translateY(0);
    }

    /* Prevent body scroll when nav is open */
    body.nav_open {
        overflow: hidden;
    }
}

/* Additional responsive breakpoints for mobile */
@media (max-width: 480px) {
    section {
        /* min-height: 90vh; */
        padding: 1.5rem 0;
    }
    
    .section_header {
        margin-bottom: 1rem;
    }
    
    .container_title {
        margin-bottom: 1rem;
        display: grid;
        justify-items: center;
    }
    .container_title h4{
        margin-bottom: 0;
        width: 70%;
        text-align: center;
    }
    
    /* 字号缩小 */
    html {
        font-size: 13px;
    }
    
    .section_title {
        font-size: 1.5rem;
    }
    
    .section_subtitle {
        font-size: 1.1rem;
    }
    
    h3 {
        font-size: 1.25rem;
    }
    
    h4 {
        font-size: 1rem;
    }
    
    p {
        font-size: 0.8rem;
    }
    
    /* 宽度和高度缩小 */
    .container {
        padding: 0 0.75rem;
    }
    
    .about_image img {
        width: 70%;
    }
    
    .propose_box {
        width: 95%;
        padding: 25px 2px;
        margin: -15% auto 0 auto;
    }
    
    .feature_item {
        padding: 1.5rem;
    }
    
    .feature_title {
        font-size: 1.5rem;
    }
    
    /* .feature_description {
        font-size: 0.8rem;
    } */
    
    .solution_point {
        padding: 1rem;
    }
    
    .point_description {
        font-size: 0.8rem;
    }
    
    .video {
        height: 160px;
    }
    
    .flow2_step {
        padding: 1.25rem 1.75rem;
    }
    
    .flow2_title {
        font-size: 1.25rem;
    }
    
    .flow2_description {
        font-size: 1rem;
    }
}

@media (max-width: 360px) {
    section {
        /* min-height: 85vh; */
        padding: 1rem 0;
    }
    
    .section_header {
        margin-bottom: 0.75rem;
    }
    
    .container_title {
        margin-bottom: 0.75rem;
    }
    
    /* 字号进一步缩小 */
    html {
        font-size: 12px;
    }
    
    .section_title {
        font-size: 1.25rem;
    }
    
    .section_subtitle {
        font-size: 1rem;
    }
    
    h3 {
        font-size: 1.125rem;
    }
    
    h4 {
        font-size: 0.9rem;
    }
    
    p {
        font-size: 0.75rem;
    }
    
    /* 宽度和高度进一步缩小 */
    .container {
        padding: 0 0.5rem;
    }
    
    .about_image img {
        width: 65%;
    }
    
    .propose_box {
        width: 98%;
        padding: 20px 1px;
    }
   
    .feature_item {
        padding: 1.25rem;
    }
    
    .feature_title {
        font-size: 1rem;
    }
    
    /* .feature_description {
        font-size: 0.75rem;
    } */
    
    .solution_point {
        padding: 0.75rem;
    }
    
    .point_title {
        font-size: 1rem;
    }
    
    .point_description {
        font-size: 0.75rem;
    }
    
    .video {
        height: 140px;
    }
    
    .flow2_step {
        padding: 1rem 0.5rem;
    }
    
    .flow2_title {
        font-size: 1.125rem;
    }
    
    .flow2_description {
        font-size: 0.9rem;
    }
    
    .qa_item_text {
        font-size: 1rem;
    }
}

/* Landscape orientation adjustments */
@media (max-width: 768px) and (orientation: landscape) {
    .fv {
        min-height: 60vh;
    }

    .fv_title {
        font-size: 1.75rem;
    }

    .fv_subtitle {
        font-size: 1rem;
    }

    section {
        /* min-height: 80vh; */
        padding: 1.5rem 0;
    }
}

/* High DPI display adjustments */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {

    .logo img,
    .footer_logo img {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

/* Accessibility improvements for mobile */
@media (max-width: 768px) {

    .qa_question:focus {
        outline: 2px solid #007bff;
        outline-offset: -2px;
    }
}