/* 页面样式 */
.page-hero {
    position: relative;
    overflow: hidden;
    background: transparent;
    color: white;
    padding: 40px 20px;
    text-align: center;
    min-height: 180px;
    height: 28vh;
    max-height: 260px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-hero-content {
    position: relative;
    z-index: 2;
}

.page-hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-hero-content p {
    font-size: 1.2rem;
    opacity: 0.95;
}

/* 产品/服务容器 */
.products-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 20px;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
}

/* 侧边栏导航 */
.product-sidebar {
    position: sticky;
    top: 90px;
    height: fit-content;
}

.product-nav {
    background: rgba(18, 29, 52, 0.42);
    padding: 20px;
    border-radius: 6px;
    border-left: 4px solid var(--primary-purple);
}

.nav-section h3 {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: var(--electric-blue);
}

.nav-section ul {
    list-style: none;
}

.nav-section ul li {
    margin-bottom: 10px;
}

.nav-section .nav-item {
    display: block;
    padding: 8px 12px;
    color: var(--ice-blue);
    text-decoration: none;
    border-radius: 5px;
    transition: all 0.3s;
    border-left: 3px solid transparent;
}

.nav-section .nav-item:hover,
.nav-section .nav-item.active {
    background: rgba(18, 29, 52, 0.55);
    color: var(--electric-blue);
    border-left-color: var(--electric-blue);
    padding-left: 15px;
}

/* 产品内容 */
.product-content {
    padding: 20px;
}

.product-section {
    margin-bottom: 60px;
    display: none;
}

.product-section.active-section,
.about-section.active-section {
    display: block;
}

.product-section h2 {
    font-size: 2rem;
    margin-bottom: 10px;
    color: var(--ice-blue);
    border-bottom: 3px solid var(--accent-color);
    padding-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.inline-logo {
    height: 2rem;
    width: auto;
}

.intro-subtitle {
    font-size: 1.1rem;
    color: rgba(207, 232, 255, 0.62);
    margin-bottom: 30px;
    font-style: italic;
}

/* 产品标签页 */
.product-tabs {
    display: flex;
    gap: 10px;
    margin: 30px 0;
    border-bottom: 2px solid rgba(156, 198, 236, 0.16);
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 20px;
    font-size: 0.95rem;
    cursor: pointer;
    color: rgba(207, 232, 255, 0.62);
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-btn:hover {
    color: var(--electric-blue);
}

.tab-btn.active {
    color: var(--electric-blue);
    border-bottom-color: var(--electric-blue);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in;
}

.tab-content.active {
    display: block;
}

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

/* 特性网格 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.media-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 18px;
    margin: 28px 0;
}

.media-card {
    background: rgba(18, 29, 52, 0.55);
    border: 1px solid rgba(156, 198, 236, 0.18);
    border-radius: 8px;
    padding: 14px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.media-card img {
    width: 100%;
    height: 180px;
    object-fit: contain;
    background: rgba(10, 17, 32, 0.5);
    border-radius: 6px;
    margin-bottom: 10px;
}

.media-card h4 {
    color: var(--ice-blue);
    font-size: 0.98rem;
    margin-bottom: 6px;
}

.media-card p {
    color: rgba(207, 232, 255, 0.62);
    font-size: 0.88rem;
    line-height: 1.55;
}

.feature-item {
    background: rgba(18, 29, 52, 0.42);
    padding: 25px;
    border-radius: 6px;
    border-left: 4px solid var(--primary-purple);
}

.feature-item h4 {
    color: var(--ice-blue);
    margin-bottom: 15px;
    font-size: 1.05rem;
}

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

.feature-item ul li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    color: rgba(207, 232, 255, 0.62);
    line-height: 1.6;
}

.feature-item ul li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* 高亮框 */
.highlight-box {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(106, 44, 145, 0.1) 100%);
    border-left: 4px solid var(--accent-color);
    padding: 20px;
    border-radius: 6px;
    margin: 25px 0;
}

.highlight-box h4 {
    color: var(--ice-blue);
    margin-bottom: 15px;
}

.highlight-box ul {
    list-style: none;
    padding: 0;
}

.highlight-box ul li {
    margin-bottom: 8px;
    padding-left: 20px;
    position: relative;
}

.highlight-box ul li:before {
    content: "🏆";
    position: absolute;
    left: 0;
}

/* 工作流程 */
.workflow-section {
    margin: 30px 0;
}

.workflow-section h4 {
    color: var(--ice-blue);
    margin-bottom: 20px;
}

.workflow {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    overflow-x: auto;
    padding: 20px;
    background: rgba(18, 29, 52, 0.42);
    border-radius: 6px;
}

.workflow-step {
    flex: 1;
    min-width: 140px;
    text-align: center;
    position: relative;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
    margin: 0 auto 10px;
}

.step-name {
    font-weight: 600;
    color: var(--ice-blue);
    margin-bottom: 5px;
}

.workflow-step p {
    font-size: 0.85rem;
    color: rgba(207, 232, 255, 0.62);
}

.workflow-arrow {
    font-size: 1.5rem;
    color: var(--accent-color);
    flex: 0 0 auto;
}

/* 案例网格 */
.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.case-item {
    background: rgba(18, 29, 52, 0.55);
    padding: 25px;
    border-radius: 6px;
    box-shadow: 0 2px 8px rgba(16, 41, 79, 0.08);
    border-top: 3px solid var(--primary-purple);
    transition: all 0.3s;
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.case-item h4 {
    color: var(--ice-blue);
    margin-bottom: 10px;
}

.case-item p {
    color: rgba(207, 232, 255, 0.62);
    line-height: 1.6;
}

/* 表格样式 */
.table-section {
    margin: 30px 0;
}

.table-section h4 {
    color: var(--ice-blue);
    margin-bottom: 15px;
}

.service-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(18, 29, 52, 0.55);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(16, 41, 79, 0.08);
}

.service-table thead {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-purple) 100%);
    color: white;
}

.service-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
}

.service-table td {
    padding: 15px;
    border-bottom: 1px solid rgba(156, 198, 236, 0.16);
    color: rgba(207, 232, 255, 0.62);
}

.service-table tbody tr:hover {
    background: rgba(18, 29, 52, 0.42);
}

.service-table tbody tr:last-child td {
    border-bottom: none;
}

/* 应用列表 */
.application-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 30px 0;
}

.app-item {
    background: rgba(18, 29, 52, 0.42);
    padding: 20px;
    border-radius: 6px;
    border-left: 4px solid var(--accent-color);
    transition: all 0.3s;
}

.app-item:hover {
    background: rgba(18, 29, 52, 0.55);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-left-color: var(--electric-blue);
}

.app-item h4 {
    color: var(--ice-blue);
    margin-bottom: 10px;
}

.app-item p {
    color: rgba(207, 232, 255, 0.62);
    line-height: 1.6;
}

/* 结果展示 */
.result-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

.result-item {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1) 0%, rgba(106, 44, 145, 0.1) 100%);
    padding: 25px;
    border-radius: 6px;
    text-align: center;
}

.result-item h4 {
    color: var(--ice-blue);
    margin-bottom: 10px;
}

.result-item p {
    color: rgba(207, 232, 255, 0.62);
}

/* 占位符和提示框 */
.placeholder-section,
.contact-prompt,
.info-box {
    background: linear-gradient(135deg, rgba(106, 44, 145, 0.05) 0%, rgba(0, 212, 255, 0.05) 100%);
    padding: 25px;
    border-radius: 6px;
    margin: 25px 0;
    border-left: 4px solid var(--primary-purple);
}

.placeholder-section h4,
.contact-prompt h4,
.info-box h4 {
    color: var(--ice-blue);
    margin-bottom: 15px;
}

.placeholder-section ul,
.contact-prompt ul {
    list-style: none;
    padding: 0;
}

.placeholder-section ul li,
.contact-prompt ul li {
    margin-bottom: 10px;
    padding-left: 20px;
    position: relative;
    color: rgba(207, 232, 255, 0.62);
}

.placeholder-section ul li:before,
.contact-prompt ul li:before {
    content: "";
    position: absolute;
    left: 0;
}

.doc-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.doc-link:hover {
    color: var(--ice-blue);
    text-decoration: underline;
}

/* 响应式 */
@media (max-width: 768px) {
    .products-container {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .product-sidebar {
        position: static;
    }

    .page-hero-content h1 {
        font-size: 1.8rem;
    }

    .product-tabs {
        flex-wrap: wrap;
    }

    .tab-btn {
        padding: 8px 15px;
        font-size: 0.85rem;
    }

    .workflow {
        flex-direction: column;
    }

    .workflow-arrow {
        transform: rotate(90deg);
    }

    .feature-grid,
    .case-grid {
        grid-template-columns: 1fr;
    }

    .service-table {
        font-size: 0.85rem;
    }

    .service-table th,
    .service-table td {
        padding: 10px;
    }
}

@media (max-width: 480px) {
    .page-hero {
        padding: 60px 15px;
    }

    .page-hero-content h1 {
        font-size: 1.3rem;
    }

    .page-hero-content p {
        font-size: 0.95rem;
    }

    .product-tabs {
        gap: 5px;
    }

    .tab-btn {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
}

/* 专业学术版式增强 */
.product-content {
    max-width: 980px;
    background: rgba(18, 29, 52, 0.55);
}

.product-section h2,
.about-section h2,
.resource-section h2 {
    letter-spacing: 0;
}

.prose-block {
    margin: 24px 0;
    color: rgba(207, 232, 255, 0.62);
    line-height: 1.9;
    font-size: 0.98rem;
}

.prose-block p {
    margin-bottom: 14px;
}

.inline-figure {
    margin: 18px 0 26px;
    border: 1px solid rgba(156, 198, 236, 0.18);
    border-radius: 6px;
    background: rgba(18, 29, 52, 0.55);
    padding: 12px;
}

.inline-figure img,
.media-card img,
.preview-image,
.video-placeholder img {
    cursor: zoom-in;
}

.inline-figure img {
    width: 100%;
    max-height: 360px;
    object-fit: contain;
    background: rgba(10, 17, 32, 0.5);
    border-radius: 4px;
}

.inline-figure figcaption {
    margin-top: 8px;
    color: rgba(207, 232, 255, 0.62);
    font-size: 0.86rem;
    text-align: center;
}

.image-lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 32px;
    background: rgba(4, 12, 24, 0.82);
}

.image-lightbox.open {
    display: flex;
}

.image-lightbox img {
    max-width: 92vw;
    max-height: 88vh;
    object-fit: contain;
    background: rgba(18, 29, 52, 0.55);
    border-radius: 6px;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.35);
}

.image-lightbox button {
    position: absolute;
    top: 18px;
    right: 24px;
    width: 40px;
    height: 40px;
    border: 0;
    border-radius: 50%;
    background: rgba(18, 29, 52, 0.7);
    color: var(--ice-blue);
    font-size: 1.35rem;
    cursor: pointer;
}


.service-video-block {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(280px, 0.9fr) 1.1fr;
    gap: 20px;
    align-items: center;
    padding: 16px;
    border: 1px solid rgba(156, 198, 236, 0.18);
    border-radius: 8px;
    background: rgba(10, 17, 32, 0.5);
}

.service-video-block video {
    width: 100%;
    aspect-ratio: 16 / 9;
    display: block;
    border-radius: 6px;
    background: #0f172a;
}

.service-video-block h4 {
    color: var(--ice-blue);
    margin-bottom: 8px;
}

.service-video-block p {
    color: rgba(207, 232, 255, 0.62);
    line-height: 1.75;
}

@media (max-width: 768px) {
    .service-video-block {
        grid-template-columns: 1fr;
    }
}