/* ===== 观知铭培训平台页面专用样式 ===== */

/* ===== 平台功能特色展示区域 ===== */
.platform-features-section {
    padding: 80px 0;
    background: #001344; /* 默认深蓝色背景 */
    color: white;
    position: relative;
    overflow: hidden;
}

/* 背景装饰效果 */
.platform-features-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}



/* ===== 堆叠卡片区域 ===== */
.stack-area {
    width: 100%;
    height: 100vh;
    position: relative;
    background: transparent;
    display: flex;
    margin-top: 20px;
}

/* 左侧内容区域 */
.left {
    height: 100vh;
    flex-basis: 50%;
    position: sticky;
    top: 0;
    left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    flex-direction: column;
    z-index: 10;
    padding: 0 60px;
}

/* 左侧标题样式 */
.left .title {
    width: 100%;
    max-width: 600px;
    font-size: 64px;
    font-family: 'Poppins', sans-serif;
    font-weight: 800;
    line-height: 1.1;
    color: white;
    margin-bottom: 30px;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    text-align: center;
    white-space: nowrap;
    background: linear-gradient(135deg, #ffffff 0%, #e0e7ff 50%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    animation: titleGlow 3s ease-in-out infinite alternate;
}

.left .title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, #3f5af3, #667eea, #3f5af3);
    border-radius: 2px;
    animation: underlinePulse 2s ease-in-out infinite;
}

.left .sub-title {
    width: 100%;
    max-width: 520px;
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 50px;
    text-align: center;
    position: relative;
    animation: fadeInUp 1s ease-out 0.5s both;
}

.left .sub-title::before {
    content: '';
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
}

/* 标题发光动画 */
@keyframes titleGlow {
    0% {
        filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.3));
    }
    100% {
        filter: drop-shadow(0 0 15px rgba(255, 255, 255, 0.6));
    }
}

/* 下划线脉冲动画 */
@keyframes underlinePulse {
    0%, 100% {
        opacity: 0.7;
        transform: translateX(-50%) scaleX(1);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1.2);
    }
}

/* 文字淡入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 按钮容器 */
.button-container {
    margin-top: 20px;
}

/* 按钮样式 */
.cta-button {
    display: inline-block;
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    font-weight: 600;
    padding: 18px 40px;
    background: linear-gradient(135deg, #3f5af3 0%, #667eea 100%);
    color: white;
    text-decoration: none;
    border-radius: 12px;
    border: none;
    outline: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(63, 90, 243, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.cta-button:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(63, 90, 243, 0.4);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:active {
    transform: translateY(-1px);
    box-shadow: 0 10px 25px rgba(63, 90, 243, 0.3);
}

/* 右侧堆叠卡片区域 */
.right {
    height: 100vh;
    flex-basis: 50%;
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 卡片样式 */
.card {
    width: 350px;
    height: 350px;
    border-radius: 25px;
    margin-bottom: 10px;
    position: absolute;
    top: calc(50% - 175px);
    left: calc(50% - 175px);
    transition: 0.5s ease-in-out;
    box-sizing: border-box;
    padding: 40px 35px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    cursor: pointer;
}

/* 卡片悬停效果 */
.card:hover {
    transform: scale(1.05) !important;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 卡片点击效果 */
.card:active {
    transform: scale(0.98) !important;
    transition: transform 0.1s ease;
}

/* 卡片颜色渐变 - 更丰富多样的配色 */
.card:nth-child(1) {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.card:nth-child(2) {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.card:nth-child(3) {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.card:nth-child(4) {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.card:nth-child(5) {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.card:nth-child(6) {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
}

.card:nth-child(7) {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
}

.card:nth-child(8) {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
}

.card:nth-child(9) {
    background: linear-gradient(135deg, #a8caba 0%, #5d4e75 100%);
}

.card:nth-child(10) {
    background: linear-gradient(135deg, #d299c2 0%, #fef9d7 100%);
}

.card:nth-child(11) {
    background: linear-gradient(135deg, #89f7fe 0%, #66a6ff 100%);
}

.card:nth-child(12) {
    background: linear-gradient(135deg, #fdbb2d 0%, #22c1c3 100%);
}

.card:nth-child(13) {
    background: linear-gradient(135deg, #ff6b6b 0%, #4ecdc4 100%);
}

.card:nth-child(14) {
    background: linear-gradient(135deg, #c471ed 0%, #f7797d 100%);
}

.card:nth-child(15) {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
}

.card:nth-child(16) {
    background: linear-gradient(135deg, #fc466b 0%, #3f5efb 100%);
}

.card:nth-child(17) {
    background: linear-gradient(135deg, #8e2de2 0%, #4a00e0 100%);
}

.card:nth-child(18) {
    background: linear-gradient(135deg, #f12711 0%, #f5af19 100%);
}

/* 卡片内容样式 */
.card .sub {
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    font-weight: 600;
    color: white;
    margin-bottom: 8px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    text-align: center;
}

.card .content {
    font-family: 'Poppins', sans-serif;
    font-size: 28px;
    font-weight: 700;
    line-height: 1.2;
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    text-align: center;
}

/* 卡片动画效果 */
.away {
    transform-origin: bottom left;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .left {
        padding: 0 40px;
    }
    
    .left .title {
        font-size: 56px;
        line-height: 1.1;
        max-width: 520px;
        white-space: nowrap;
    }
    
    .left .sub-title {
        max-width: 480px;
        font-size: 16px;
        margin-bottom: 40px;
    }
    
    .cta-button {
        font-size: 15px;
        padding: 16px 35px;
    }
    
    .card {
        width: 300px;
        height: 300px;
        top: calc(50% - 150px);
        left: calc(50% - 150px);
        padding: 30px 25px;
    }
    
    .card .sub {
        font-size: 16px;
        margin-bottom: 6px;
    }
    
    .card .content {
        font-size: 24px;
        line-height: 1.2;
    }
}

@media (max-width: 768px) {
    .platform-features-section {
        padding: 60px 0;
    }
    
    .stack-area {
        flex-direction: column;
        height: auto;
    }
    
    .left {
        height: auto;
        flex-basis: 100%;
        position: relative;
        padding: 40px 20px;
    }
    
    .right {
        height: auto;
        flex-basis: 100%;
        position: relative;
        padding: 40px 20px;
        min-height: 400px;
    }
    
    .left .title {
        font-size: 42px;
        line-height: 1.1;
        width: 100%;
        text-align: center;
        margin-bottom: 25px;
        max-width: 100%;
        white-space: nowrap;
    }
    
    .left .sub-title {
        width: 100%;
        text-align: center;
        margin-bottom: 35px;
        max-width: 100%;
        font-size: 16px;
    }
    
    .button-container {
        margin-top: 15px;
    }
    
    .cta-button {
        font-size: 15px;
        padding: 16px 32px;
    }
    
    .card {
        position: relative;
        top: auto;
        left: auto;
        margin: 20px auto;
        width: 280px;
        height: 280px;
        padding: 30px 25px;
    }
    
    .card .sub {
        font-size: 16px;
        margin-bottom: 6px;
    }
    
    .card .content {
        font-size: 22px;
        line-height: 1.2;
    }
}

@media (max-width: 480px) {
    .platform-features-section {
        padding: 40px 0;
    }
    
    .left {
        padding: 30px 15px;
    }
    
    .left .title {
        font-size: 32px;
        line-height: 1.1;
        margin-bottom: 20px;
        white-space: nowrap;
    }
    
    .left .sub-title {
        font-size: 15px;
        margin-bottom: 30px;
        line-height: 1.7;
    }
    
    .button-container {
        margin-top: 10px;
    }
    
    .cta-button {
        font-size: 14px;
        padding: 14px 28px;
    }
    
    .card {
        width: 250px;
        height: 250px;
        padding: 25px 20px;
    }
    
    .card .sub {
        font-size: 14px;
        margin-bottom: 5px;
    }
    
    .card .content {
        font-size: 20px;
        line-height: 1.2;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-heading {
    animation: fadeInUp 0.6s ease forwards;
}

/* ===== 平台价值展示区域 ===== */
.platform-value-section {
    padding: 120px 0;
    background: #001344;
    color: white;
    position: relative;
}

/* 核心价值描述 */
.value-description {
    margin-bottom: 80px;
    text-align: center;
}

.value-description p {
    font-family: 'Poppins', sans-serif;
    font-size: 20px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
    margin: 0;
    font-weight: 400;
    max-width: 800px;
    margin: 0 auto;
}

/* 价值特性卡片 */
.value-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 60px;
}

.value-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 40px 30px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #3f5af3, #667eea, #3f5af3);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.value-card:hover {
    transform: translateY(-10px);
    background: rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.value-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #ff6b6b 0%, #ffa500 100%);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
}

.card-icon i {
    font-size: 24px;
    color: white;
}

.card-content h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 22px;
    font-weight: 600;
    color: white;
    margin-bottom: 15px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.card-content p {
    font-family: 'Poppins', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
    font-weight: 400;
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .value-cards {
        grid-template-columns: repeat(3, 1fr);
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .platform-value-section {
        padding: 80px 0;
    }
    
    .value-cards {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-top: 40px;
    }
    
    .value-description p {
        font-size: 18px;
    }
    
    .value-card {
        padding: 30px 20px;
    }
    
    .card-content h3 {
        font-size: 20px;
    }
    
    .card-content p {
        font-size: 15px;
    }
}

@media (max-width: 480px) {
    .platform-value-section {
        padding: 60px 0;
    }
    
    .value-description p {
        font-size: 16px;
    }
    
    .value-card {
        padding: 25px 15px;
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 20px;
    }
    
    .card-icon i {
        font-size: 20px;
    }
    
    .card-content h3 {
        font-size: 18px;
    }
    
    .card-content p {
        font-size: 14px;
    }
}

/* ===== 成功案例展示区域 ===== */
/* 成功案例样式 */
.success-cases-section {
    background: #001344;
    padding: 80px 0;
    color: white;
}

.cases-accordion-container {
    max-width: 800px;
    margin: 0 auto;
}

.case-accordion-item {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}

.case-accordion-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.case-accordion-item.active {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
}

.case-accordion-header {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
    position: relative;
}

.case-accordion-header:hover {
    background: rgba(255, 255, 255, 0.1);
}

.case-accordion-header::after {
    content: '点击获取方案';
    position: absolute;
    right: 80px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
    background: rgba(63, 90, 243, 0.2);
    padding: 4px 8px;
    border-radius: 12px;
    border: 1px solid rgba(63, 90, 243, 0.3);
    transition: all 0.3s ease;
    opacity: 0;
    pointer-events: none;
}

.case-accordion-header:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(-5px);
}

.case-accordion-item.active .case-accordion-header::after {
    content: '方案已展开';
    background: rgba(102, 126, 234, 0.3);
    border-color: rgba(102, 126, 234, 0.5);
    opacity: 1;
}

.case-header-content {
    display: flex;
    align-items: center;
    flex: 1;
}

.case-icon {
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.case-icon i {
    font-size: 24px;
    color: white;
}

.case-info h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: white;
}

.case-needs {
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
    color: rgba(255, 255, 255, 0.9);
}

.case-toggle {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.case-toggle i {
    font-size: 16px;
    color: white;
    transition: transform 0.3s ease;
}

.case-accordion-item.active .case-toggle i {
    transform: rotate(180deg);
}

.case-accordion-content {
    display: none;
    padding: 0 30px 30px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    animation: slideDown 0.3s ease-out;
}

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

.case-solution h4 {
    font-size: 20px;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    margin: 0 0 30px 0;
    color: white;
    text-align: center;
    position: relative;
    padding-bottom: 20px;
    letter-spacing: 0.5px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.case-solution h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #3f5af3 0%, #667eea 50%, #764ba2 100%);
    border-radius: 2px;
    box-shadow: 0 2px 8px rgba(63, 90, 243, 0.4);
}



.solution-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 35px;
    padding: 25px 0;
    max-width: 700px;
    margin: 0 auto;
}

.solution-item {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08) 0%, rgba(255, 255, 255, 0.03) 100%);
    border-radius: 15px;
    padding: 28px 22px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(15px);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.solution-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, #3f5af3, #667eea);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.solution-item:hover::before {
    opacity: 1;
}

.solution-item:hover {
    background: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.solution-item h5 {
    font-size: 18px;
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
    margin: 0 0 20px 0;
    color: white;
    position: relative;
    padding-left: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.3px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
    text-align: center;
}

.solution-item h5::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    right: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, #3f5af3, #667eea);
    border-radius: 1px;
    opacity: 0.7;
}



.solution-item ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.solution-item li {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.9);
    position: relative;
    padding-left: 25px;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    text-align: left;
    list-style: none;
}

.solution-item li:hover {
    color: white;
    transform: translateX(3px);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.solution-item li::before {
    content: "▶";
    position: absolute;
    left: 0;
    color: #3f5af3;
    font-size: 12px;
    font-weight: bold;
    transition: all 0.3s ease;
    top: 2px;
}

.solution-item li:hover::before {
    color: #667eea;
    transform: scale(1.2);
    text-shadow: 0 0 8px rgba(102, 126, 234, 0.6);
}

/* 响应式调整 */
@media (max-width: 1200px) {
    .cases-accordion-container {
        max-width: 700px;
    }
    
    .case-accordion-header {
        padding: 20px 25px;
    }
    
    .case-icon {
        width: 50px;
        height: 50px;
        margin-right: 15px;
    }
    
    .case-icon i {
        font-size: 20px;
    }
    
    .case-info h3 {
        font-size: 16px;
    }
    
    .case-needs {
        font-size: 13px;
    }
    
    .solution-details {
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .success-cases-section {
        padding: 60px 0;
    }
    
    .cases-accordion-container {
        max-width: 100%;
        padding: 0 20px;
    }
    
    .case-accordion-header {
        padding: 18px 20px;
    }
    
    .case-accordion-header::after {
        right: 70px;
        font-size: 11px;
        padding: 3px 6px;
    }
    
    .case-header-content {
        flex-direction: column;
        align-items: flex-start;
        text-align: left;
    }
    
    .case-icon {
        width: 45px;
        height: 45px;
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .case-icon i {
        font-size: 18px;
    }
    
    .case-info h3 {
        font-size: 15px;
        margin-bottom: 5px;
    }
    
    .case-needs {
        font-size: 12px;
    }
    
    .case-toggle {
        width: 35px;
        height: 35px;
    }
    
    .case-toggle i {
        font-size: 14px;
    }
    
    .case-accordion-content {
        padding: 0 20px 20px;
    }
    
    .solution-details {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .solution-item {
        padding: 20px 15px;
    }
    
    .solution-item h5 {
        font-size: 16px;
        margin-bottom: 15px;
        padding-left: 0;
        font-weight: 700;
    }
    
    .solution-item h5::after {
        width: 100%;
        height: 2px;
    }
    
    .solution-item li {
        font-size: 14px;
        margin-bottom: 12px;
        padding-left: 20px;
        font-weight: 600;
    }
    
    .solution-item li::before {
        font-size: 10px;
        top: 1px;
    }
}

@media (max-width: 480px) {
    .success-cases-section {
        padding: 40px 0;
    }
    
    .cases-accordion-container {
        padding: 0 15px;
    }
    
    .case-accordion-header {
        padding: 15px 18px;
    }
    
    .case-accordion-header::after {
        right: 60px;
        font-size: 10px;
        padding: 2px 5px;
    }
    
    .case-icon {
        width: 40px;
        height: 40px;
    }
    
    .case-icon i {
        font-size: 16px;
    }
    
    .case-info h3 {
        font-size: 14px;
    }
    
    .case-needs {
        font-size: 11px;
    }
    
    .case-toggle {
        width: 30px;
        height: 30px;
    }
    
    .case-toggle i {
        font-size: 12px;
    }
    
    .case-accordion-content {
        padding: 0 18px 18px;
    }
    
    .case-solution h4 {
        font-size: 16px;
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    
    .case-solution h4::after {
        width: 100%;
        height: 2px;
    }
    

    
    .solution-item {
        padding: 18px 15px;
    }
    
    .solution-item h5 {
        font-size: 15px;
        margin-bottom: 15px;
        padding-left: 0;
        font-weight: 700;
    }
    
    .solution-item h5::after {
        width: 100%;
        height: 1px;
    }
    
    .solution-item li {
        font-size: 13px;
        margin-bottom: 10px;
        padding-left: 18px;
        font-weight: 600;
    }
    
    .solution-item li::before {
        font-size: 9px;
        top: 1px;
    }
}