body {
    --psirt-section-padding: min(max(4vw, 40px), 80px);
    --psirt-section-title-fs: 32px;
    --psirt-section-p-fs: 20px;
    --psirt-section-title-color: #000;
    --psirt-section-title-2-fs: 24px;
    --psirt-section-title-3-fs: 18px;
    --psirt-section-p-2-fs: 16px;
    --psirt-section-p-3-fs: 14px;
}

.psirt-container {
    width: 100%;
}

.psirt-container .psirt-header {
    width: 100%;
    height: 320px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.psirt-container .psirt-header-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    z-index: 0;
    will-change: transform;
}

.psirt-container .psirt-header-content {
    position: relative;
    z-index: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 0 0 min(max(16vw, 60px), 320px);
}
.psirt-container .psirt-header-content h1 {
    font-size: var(--psirt-section-title-fs);
    font-weight: bold;
    color: #000;
    margin: 0;
}

.psirt-container .psirt-header-content p {
    font-size: var(--psirt-section-p-2-fs);
    color: #000;
    margin-top: 16px;
    line-height: 1;
}

.psirt-section {
    margin-top: min(max(2vw, 20px), 40px);
    padding: 0 0 var(--psirt-section-padding) 0;
}

.psirt-section-container {
    display: grid;
    grid-template-columns: 256px 1fr;
    gap: min(max(3.2vw, 40px), 64px);
    align-items: start;
}

.psirt-directory-wrapper {
    position: sticky;
    top: 70px;
}

.psirt-directory {
   background: linear-gradient(135deg,#f8f9fd, #f1f3f7);
   padding: min(max(2vw, 20px), 40px);
   position: sticky;
   top: 70px;
   max-height: calc(100vh - 70px);
   overflow-y: auto;
   overflow-x: hidden;
}

/* 自定义滚动条样式 */
.psirt-directory::-webkit-scrollbar {
    width: 6px;
}

.psirt-directory::-webkit-scrollbar-track {
    background: transparent;
}

.psirt-directory::-webkit-scrollbar-thumb {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 3px;
}

.psirt-directory::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 0, 0, 0.3);
}

.psirt-directory .psirt-directory-title h2 {
    font-size: var(--psirt-section-title-2-fs);
    font-weight: bold;
    color: #000;
    margin: 0 0 33px 0;
    width: 100%;
    position: relative;
    padding-bottom: 15px;
}
.psirt-directory .psirt-directory-title h2:after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 80px;
    height: 2px;
    background-color: var(--theme-color);
}

.psirt-directory .psirt-directory-list {
    display: flex;
    flex-direction: column;
    gap: min(max(2vw, 10px), 20px);
}
.psirt-directory .psirt-directory-list .psirt-directory-list-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    transition: all 0.3s ease;
}


.psirt-directory .psirt-directory-list .psirt-directory-list-item.active .psirt-directory-list-item-title {
    color: var(--theme-color, #0075c9);
    font-weight: bold;
}

.psirt-directory .psirt-directory-list .psirt-directory-list-item .psirt-directory-list-item-title {
    font-size: var(--psirt-section-p-2-fs);
    color: #000;
    margin: 0;
    transition: all 0.3s ease;
}
.psirt-section .psirt-content h2 {
    font-size: var(--psirt-section-title-2-fs);
    font-weight: bold;
    color: #000;
    margin: 0 0 12px 0;
    line-height: 1;
}
.psirt-section .psirt-content h3,
.psirt-section .psirt-content h4,
.psirt-section .psirt-content h5 {
    font-size: var(--psirt-section-title-3-fs);
    font-weight: bold;
    color: #000;
    margin: 0 0 12px 0;
    line-height: 1;
}
.psirt-section .psirt-content p {
    font-size: var(--psirt-section-p-3-fs);
    color: #000;
    margin: 0 0 24px 0;
    line-height: 1.5;
}

.psirt-section .psirt-content img {
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.psirt-section .psirt-content img:hover {
    opacity: 0.9;
}

/* 图片预览弹窗 */
.psirt-image-preview-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.psirt-image-preview-modal.active {
    opacity: 1;
    visibility: visible;
}

.psirt-image-preview-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    cursor: pointer;
}

.psirt-image-preview-container {
    position: relative;
    z-index: 1;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.psirt-image-preview-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    border-radius: 4px;
}

.psirt-image-preview-close {
    position: absolute;
    top: -50px;
    right: 0;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    color: #fff;
    font-size: 28px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    z-index: 2;
}

.psirt-image-preview-close:hover {
    background-color: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.8);
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .psirt-image-preview-container {
        max-width: 95%;
        max-height: 95%;
    }
    
    .psirt-image-preview-close {
        top: -40px;
        width: 36px;
        height: 36px;
        font-size: 24px;
    }
}
@media (max-width: 768px) {
    .psirt-directory {
        position: relative;
        top: 0;
        max-height: none;
        display: none;
    }
    
    .psirt-section-container {
        grid-template-columns: 1fr;
    }
}