/* ===== Reset & Base ===== */
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Microsoft YaHei", "PingFang SC", "Helvetica Neue", Arial, sans-serif;
    color: #333;
    line-height: 1.6;
    background: #fff;
}
a { text-decoration: none; color: inherit; }
ul, ol { list-style: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

/* ===== Header / Navigation ===== */
.header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.08);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}
.logo img { height: 45px; }
.logo-text {
    font-size: 20px;
    font-weight: bold;
    color: #1a5fb4;
    letter-spacing: 1px;
}
.logo-text small {
    display: block;
    font-size: 11px;
    color: #888;
    font-weight: normal;
    letter-spacing: 2px;
}
.nav-menu {
    display: flex;
    gap: 2px;
    align-items: center;
    flex-wrap: nowrap;
}
.nav-item {
    position: relative;
    line-height: 70px;
    cursor: pointer;
    font-size: 15px;
    color: #333;
    transition: color 0.3s;
    white-space: nowrap;
    flex-shrink: 0;
}
.nav-item a {
    display: block;
    padding: 0 14px;
    line-height: 70px;
    height: 70px;
    color: inherit;
    font-weight: 600;
    white-space: nowrap;
}
.nav-item:hover, .nav-item.active {
    color: #1a5fb4;
}
.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 3px;
    background: #1a5fb4;
    border-radius: 2px;
}
/* Dropdown */
.nav-dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: #fff;
    min-width: 280px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
    border-radius: 6px;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    padding: 10px 0;
    pointer-events: none;
}
.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
/* JS未渲染完启用产品前，隐藏产品下拉，防止慢网/请求失败时露出硬编码的禁用产品 */
.nav-dropdown:not(.products-loaded) {
    display: none !important;
}
/* 非产品下拉框（如没有products-loaded类的）正常显示 */
.nav-item:hover .nav-dropdown.products-loaded {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
.nav-dropdown a {
    display: block;
    padding: 10px 20px;
    font-size: 14px;
    color: #555;
    white-space: nowrap;
    transition: background 0.15s ease, color 0.15s ease, padding-left 0.15s ease;
}
.nav-dropdown a:hover {
    background: #f0f6ff;
    color: #1a5fb4;
    padding-left: 25px;
}

/* ===== Hero Banner ===== */
.hero {
    position: relative;
    width: 100%;
    max-width: 1164px;
    margin: 0 auto;
    overflow: hidden;
    background-color: #e8f4fc;
    background-image: none;
    background-position: center center;
    background-size: cover;
    background-repeat: no-repeat;
    height: 436px;
}
.hero-inner {
    display: none;
}
.hero-main {
    background: #fff;
    border-bottom: 3px solid #c41e3a;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.hero-main-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 28px 0;
}
.hero-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}
.hero-logo {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    flex-shrink: 0;
}
.hero-brand-text h1.hero-company {
    font-size: 28px;
    font-weight: bold;
    color: #1a5fb4;
    margin: 0 0 4px 0;
    letter-spacing: 2px;
}
.hero-company-en {
    font-size: 13px;
    color: #888;
    letter-spacing: 3px;
}
.hero-slogan {
    display: flex;
    gap: 28px;
    align-items: center;
}
.hero-slogan .slogan-blue,
.hero-slogan .slogan-red {
    font-size: 40px;
    font-weight: bold;
    letter-spacing: 6px;
}
.hero-slogan .slogan-blue {
    color: #1a5fb4;
}
.hero-slogan .slogan-red {
    color: #c41e3a;
}
.hero-scientist {
    padding: 40px 0;
}
.scientist-inner {
    display: flex;
    align-items: flex-start;
    gap: 36px;
}
.scientist-name {
    flex-shrink: 0;
    padding-top: 8px;
}
.scientist-name span {
    writing-mode: vertical-rl;
    font-size: 30px;
    font-weight: bold;
    color: #1a5fb4;
    letter-spacing: 10px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    text-shadow: 0 0 1px rgba(255,255,255,0.5);
    transform: translateZ(0);
    will-change: transform;
}
.scientist-info {
    flex: 1;
    padding: 20px 24px;
    background: rgba(255, 255, 255, 0.88);
    border-radius: 12px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}
.scientist-title {
    font-size: 16px;
    color: #333;
    font-weight: bold;
    margin-bottom: 8px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    text-shadow: 0 0 1px rgba(255,255,255,0.5);
    transform: translateZ(0);
    will-change: transform;
}
.scientist-subtitle {
    font-size: 15px;
    color: #c41e3a;
    font-weight: bold;
    margin-bottom: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    text-shadow: 0 0 1px rgba(255,255,255,0.5);
    transform: translateZ(0);
    will-change: transform;
}
.scientist-bio {
    list-style: none;
    padding: 0;
    margin: 0;
    font-size: 15px;
    color: #444;
    line-height: 2.2;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    text-shadow: 0 0 1px rgba(255,255,255,0.5);
    transform: translateZ(0);
    will-change: transform;
}
.hero-action {
    flex-shrink: 0;
    padding-top: 40px;
}
.hero-btn {
    display: inline-block;
    padding: 12px 36px;
    background: #c41e3a;
    color: #fff;
    border-radius: 30px;
    font-size: 16px;
    transition: all 0.3s;
    cursor: pointer;
}
.hero-btn:hover {
    background: #a0182e;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196,30,58,0.3);
}

/* ===== Section Common ===== */
.section {
    padding: 20px 0;
}
.section-title {
    text-align: center;
    margin-bottom: 10px;
}
.section-title h2 {
    font-size: 32px;
    color: #1a5fb4;
    margin-bottom: 5px;
}
.section-title p {
    color: #888;
    font-size: 14px;
    letter-spacing: 2px;
}
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0;
}
.section-header h2 {
    font-size: 24px;
    color: #1a5fb4;
    position: relative;
    padding-left: 12px;
}
.section-header h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 20px;
    background: #1a5fb4;
    border-radius: 2px;
}
.more-link {
    color: #888;
    font-size: 14px;
    cursor: pointer;
    transition: color 0.3s;
}
.more-link:hover { color: #1a5fb4; }

/* ===== Hot Products ===== */
.hot-products {
    background: #f8fafc;
    padding-top: 0;
}
.product-featured {
    display: flex;
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
}
.product-featured-img {
    width: 50%;
    background: #f0f6ff;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}
.product-featured-img img {
    max-height: 400px;
    max-width: 400px;
    object-fit: contain;
}
.product-featured-info {
    width: 55%;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.product-featured-info h3 {
    font-size: 26px;
    color: #1a5fb4;
    margin-bottom: 8px;
}
.product-featured-info .en-name {
    font-size: 13px;
    color: #999;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.product-featured-info p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 25px;
}
.product-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}
.product-tag {
    padding: 6px 16px;
    background: #e8f4ff;
    color: #1a5fb4;
    border-radius: 20px;
    font-size: 13px;
    border: 1px solid #c9e2f7;
}
.product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.feature-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: #f5f5f5;
    border-radius: 6px;
    font-size: 13px;
    color: #555;
}
.feature-item::before {
    content: '✓';
    color: #27ae60;
    font-weight: bold;
}

/* ===== Tech Advantages ===== */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.tech-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}
.tech-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}
.tech-card-img {
    height: 150px;
    background: linear-gradient(135deg, #1a5fb4, #2980b9);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 40px;
}
.tech-card-body {
    padding: 20px;
    text-align: center;
}
.tech-card-body h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 8px;
}
.tech-card-body p {
    font-size: 13px;
    color: #888;
    line-height: 1.6;
}

/* ===== News Section ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}
.news-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}
.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}
.news-card-img {
    height: 180px;
    background: #ddd;
    overflow: hidden;
}
.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}
.news-card:hover .news-card-img img {
    transform: scale(1.05);
}
.news-card-body {
    padding: 20px;
}
.news-card-body .date {
    font-size: 12px;
    color: #999;
    margin-bottom: 8px;
}
.news-card-body h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-card-body p {
    font-size: 13px;
    color: #777;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Cases Section ===== */
.cases-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.case-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}
.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
}
.case-card-img {
    height: 160px;
    background: #e8f4ff;
    overflow: hidden;
}
.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.case-card-body {
    padding: 15px;
}
.case-card-body h4 {
    font-size: 15px;
    color: #333;
    margin-bottom: 6px;
}
.case-card-body p {
    font-size: 12px;
    color: #888;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ===== Partners ===== */
.partners {
    background: #f8fafc;
}
.partners-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 20px;
    align-items: center;
}
.partner-item {
    background: #fff;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    transition: all 0.3s;
    cursor: pointer;
}
.partner-item:hover {
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transform: translateY(-3px);
}
.partner-logo {
    width: 70px;
    height: 70px;
    margin: 0 auto 10px;
    border-radius: 50%;
    background: #f0f6ff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    color: #1a5fb4;
    border: 2px solid #c9e2f7;
}
.partner-item span {
    font-size: 12px;
    color: #666;
}

/* ===== Footer ===== */
.footer {
    background: #0d2b4e;
    color: #b0c4de;
    padding: 50px 0 0;
}
.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
    gap: 30px;
    padding-bottom: 40px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}
.footer-logo img.footer-logo-img {
    height: 40px !important;
    width: 40px !important;
    min-width: 40px !important;
    min-height: 40px !important;
    max-width: 40px !important;
    max-height: 40px !important;
    display: block !important;
    object-fit: contain !important;
    visibility: visible !important;
    opacity: 1 !important;
    float: none !important;
    position: static !important;
    z-index: auto !important;
    background: transparent !important;
    border: none !important;
    padding: 0 !important;
    margin: 0 !important;
}
.footer-logo .logo-text {
    color: #fff;
}
.footer-logo .logo-text small {
    color: #7a97bd;
}
.footer-slogan {
    font-size: 20px;
    color: #fff;
    margin-bottom: 15px;
    font-style: italic;
}
.footer-desc {
    font-size: 13px;
    line-height: 1.8;
    color: #8fa8c8;
}
.footer-col h4 {
    color: #fff;
    font-size: 16px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: #c41e3a;
}
.footer-col ul li {
    margin-bottom: 10px;
    font-size: 13px;
    cursor: pointer;
    transition: color 0.3s;
}
.footer-col ul li:hover {
    color: #fff;
}
.footer-contact li {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 13px;
}
.footer-bottom {
    border-top: 1px solid #1e3d5f;
    padding: 20px 0;
    text-align: center;
    font-size: 12px;
    color: #6b8bb0;
}

/* ===== Page Banner ===== */
.page-banner {
    height: 250px;
    background: linear-gradient(135deg, #1a5fb4 0%, #2980b9 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
    position: relative;
    overflow: hidden;
}
.page-banner::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.page-banner-content {
    position: relative;
    z-index: 1;
}
.page-banner h1 {
    font-size: 36px;
    margin-bottom: 10px;
}
.page-banner p {
    font-size: 14px;
    opacity: 0.8;
    letter-spacing: 3px;
}
.breadcrumb {
    padding: 15px 0;
    background: #f8fafc;
    font-size: 13px;
    color: #888;
    border-bottom: 1px solid #eee;
}
.breadcrumb a { color: #1a5fb4; }
.breadcrumb .sep { margin: 0 8px; color: #ccc; }

/* ===== Product Page ===== */
.product-selector {
    background: #fff;
    padding: 20px 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 70px;
    z-index: 999;
}
.product-selector-inner {
    display: flex;
    align-items: center;
    gap: 20px;
}
.product-selector label {
    font-size: 15px;
    color: #333;
    font-weight: bold;
}
.product-select {
    flex: 1;
    max-width: 500px;
    padding: 10px 15px;
    border: 2px solid #c9e2f7;
    border-radius: 8px;
    font-size: 15px;
    color: #333;
    background: #fff;
    cursor: pointer;
    outline: none;
    transition: border-color 0.3s;
}
.product-select:focus {
    border-color: #1a5fb4;
}
.product-detail {
    padding: 40px 0;
}
.product-hero {
    display: flex;
    gap: 50px;
    margin-bottom: 50px;
    align-items: center;
}
.product-hero-img {
    width: 50%;
    background: #f0f6ff;
    border-radius: 12px;
    padding: 5px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 300px;
}
.product-hero-img img {
    width: auto;
    max-width: 400px;
    max-height: 400px;
    object-fit: contain;
}
.product-hero-info {
    width: 50%;
}
.product-hero-info h2 {
    font-size: 28px;
    color: #1a5fb4;
    margin-bottom: 10px;
}
.product-hero-info .en-name {
    font-size: 13px;
    color: #999;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.product-hero-info .desc {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 25px;
}

/* Product Introduction Box */
.product-intro-box {
    border: 1px solid #c3daf3;
    border-left: 3px solid #1a5fb4;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 25px;
    background: linear-gradient(135deg, #f7fbff 0%, #eef5fd 100%);
}

.product-intro-box p {
    font-size: 14px;
    color: #555;
    line-height: 1.8;
    margin: 0;
}
.product-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 25px;
}
.highlight-tag {
    padding: 8px 18px;
    background: linear-gradient(135deg, #1a5fb4, #2980b9);
    color: #fff;
    border-radius: 20px;
    font-size: 13px;
}
.product-section {
    margin-bottom: 40px;
}
.product-section h3 {
    font-size: 22px;
    color: #1a5fb4;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #e8f4ff;
    position: relative;
}
.product-section h3::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: #1a5fb4;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 20px;
}
.feature-card {
    background: #f8fafc;
    border-radius: 10px;
    padding: 25px;
    transition: all 0.3s;
}
.feature-card:hover {
    background: #e8f4ff;
    transform: translateY(-3px);
}
.feature-card h4 {
    font-size: 16px;
    color: #1a5fb4;
    margin-bottom: 10px;
}
.feature-card p {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
}
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    margin-top: 20px;
}
.gallery-item {
    aspect-ratio: 1;
    background: #f0f6ff;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s;
}
.gallery-item:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===== Detail Pages ===== */
.detail-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 50px 20px;
}
.detail-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}
.detail-category {
    display: inline-block;
    padding: 4px 16px;
    background: #e8f0fa;
    color: #1a5fb4;
    border-radius: 20px;
    font-size: 13px;
    margin-bottom: 16px;
}
.detail-title {
    font-size: 28px;
    color: #1a1a1a;
    line-height: 1.4;
    margin-bottom: 16px;
    font-weight: 700;
}
.detail-meta {
    display: flex;
    justify-content: center;
    gap: 24px;
    font-size: 13px;
    color: #999;
    flex-wrap: wrap;
}
.detail-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}
.detail-cover {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 30px;
    background: #f5f5f5;
}
.detail-cover img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 450px;
    object-fit: cover;
}
.detail-summary {
    background: #f5f8fc;
    border-left: 4px solid #1a5fb4;
    padding: 20px 24px;
    margin-bottom: 30px;
    border-radius: 0 8px 8px 0;
    font-size: 14px;
    color: #555;
    line-height: 1.8;
}
.detail-content {
    font-size: 15px;
    color: #333;
    line-height: 2;
}
.detail-content h2 {
    font-size: 22px;
    color: #1a5fb4;
    margin: 30px 0 16px;
    font-weight: 600;
}
.detail-content h3 {
    font-size: 18px;
    color: #1a5fb4;
    margin: 24px 0 12px;
    font-weight: 600;
}
.detail-content p {
    margin-bottom: 16px;
    text-align: justify;
}
.detail-content ul, .detail-content ol {
    margin: 16px 0;
    padding-left: 28px;
}
.detail-content li {
    margin-bottom: 8px;
}
.detail-content img {
    max-width: 100%;
    border-radius: 8px;
    margin: 16px 0;
}
.detail-content blockquote {
    border-left: 4px solid #1a5fb4;
    padding: 12px 20px;
    margin: 20px 0;
    background: #f5f8fc;
    color: #555;
    border-radius: 0 8px 8px 0;
}
.detail-case-info {
    background: #f5f8fc;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 30px;
}
.detail-case-info h3 {
    font-size: 16px;
    color: #1a5fb4;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid #e0e8f0;
}
.detail-case-info-row {
    display: flex;
    gap: 40px;
    flex-wrap: wrap;
}
.detail-case-info-item {
    flex: 1;
    min-width: 150px;
}
.detail-case-info-item label {
    font-size: 13px;
    color: #999;
    display: block;
    margin-bottom: 6px;
}
.detail-case-info-item span {
    font-size: 15px;
    color: #333;
    font-weight: 500;
}
.detail-back {
    text-align: center;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid #eee;
}
.detail-back a {
    display: inline-block;
    padding: 10px 30px;
    border: 1px solid #1a5fb4;
    color: #1a5fb4;
    border-radius: 25px;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}
.detail-back a:hover {
    background: #1a5fb4;
    color: #fff;
}
.detail-empty {
    text-align: center;
    padding: 80px 20px;
    color: #999;
}
.detail-empty h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: #666;
}

/* ===== About Page ===== */
.about-hero {
    display: flex;
    gap: 50px;
    align-items: center;
    margin-bottom: 60px;
}
.about-hero-text {
    flex: 1;
}
.about-hero-text h2 {
    font-size: 28px;
    color: #1a5fb4;
    margin-bottom: 20px;
}
.about-hero-text p {
    font-size: 15px;
    color: #555;
    line-height: 2;
    margin-bottom: 15px;
}
.about-hero-img {
    flex: 1;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}
.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-bottom: 60px;
}
.stat-item {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #f0f6ff, #fff);
    border-radius: 12px;
    transition: all 0.3s;
}
.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(26,95,180,0.15);
}
.stat-item .num {
    font-size: 42px;
    font-weight: bold;
    color: #c41e3a;
    margin-bottom: 8px;
}
.stat-item .label {
    font-size: 14px;
    color: #666;
}
.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 60px;
}
.culture-card {
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0,0,0,0.06);
    transition: all 0.3s;
}
.culture-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
.culture-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #1a5fb4, #2980b9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
}
.culture-card h4 {
    font-size: 18px;
    color: #1a5fb4;
    margin-bottom: 12px;
}
.culture-card p {
    font-size: 14px;
    color: #666;
    line-height: 1.8;
}
.timeline {
    position: relative;
    padding: 20px 0;
}
.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: #e8f4ff;
    transform: translateX(-50%);
}
.timeline-item {
    position: relative;
    display: flex;
    margin-bottom: 30px;
}
.timeline-item:nth-child(odd) {
    flex-direction: row-reverse;
}
.timeline-content {
    width: 45%;
    background: #fff;
    padding: 20px 25px;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0,0,0,0.06);
}
.timeline-year {
    font-size: 20px;
    font-weight: bold;
    color: #c41e3a;
    margin-bottom: 8px;
}
.timeline-content h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 6px;
}
.timeline-content p {
    font-size: 13px;
    color: #777;
    line-height: 1.6;
}
.timeline-dot {
    position: absolute;
    left: 50%;
    top: 25px;
    width: 16px;
    height: 16px;
    background: #c41e3a;
    border-radius: 50%;
    transform: translateX(-50%);
    border: 3px solid #fff;
    box-shadow: 0 0 0 2px #c41e3a;
}

/* ===== Contact Page ===== */
.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
}
.contact-info h3 {
    font-size: 24px;
    color: #1a5fb4;
    margin-bottom: 25px;
}
.contact-list {
    margin-bottom: 30px;
}
.contact-list li {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px dashed #eee;
}
.contact-icon {
    width: 45px;
    height: 45px;
    background: #e8f4ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #1a5fb4;
    flex-shrink: 0;
}
.contact-text h4 {
    font-size: 15px;
    color: #333;
    margin-bottom: 5px;
}
.contact-text p {
    font-size: 14px;
    color: #666;
}
.contact-form {
    background: #fff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 5px 25px rgba(0,0,0,0.08);
}
.contact-form h3 {
    font-size: 22px;
    color: #1a5fb4;
    margin-bottom: 25px;
}
.form-group {
    margin-bottom: 20px;
}
.form-group label {
    display: block;
    font-size: 14px;
    color: #555;
    margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px 15px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.3s;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: #1a5fb4;
}
.form-group textarea {
    resize: vertical;
    min-height: 120px;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}
.submit-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #1a5fb4, #2980b9);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s;
}
.submit-btn:hover {
    background: linear-gradient(135deg, #154a8e, #1f6a9e);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(26,95,180,0.3);
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .tech-grid { grid-template-columns: repeat(2, 1fr); }
    .news-grid { grid-template-columns: repeat(2, 1fr); }
    .cases-grid { grid-template-columns: repeat(2, 1fr); }
    .partners-grid { grid-template-columns: repeat(4, 1fr); }
    .footer-content { grid-template-columns: 1fr 1fr; }
    .product-hero { flex-direction: column; }
    .product-hero-img, .product-hero-info { width: 100%; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
    .about-hero { flex-direction: column; }
    .about-stats { grid-template-columns: repeat(2, 1fr); }
    .culture-grid { grid-template-columns: 1fr; }
    .contact-wrap { grid-template-columns: 1fr; }
    .nav-menu { display: none; }
    .product-featured { flex-direction: column; }
    .product-featured-img, .product-featured-info { width: 100%; }
}
@media (max-width: 600px) {
    .tech-grid { grid-template-columns: 1fr; }
    .news-grid { grid-template-columns: 1fr; }
    .cases-grid { grid-template-columns: 1fr; }
    .partners-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: 1fr; }
    .features-grid { grid-template-columns: 1fr; }
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .about-stats { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
}

/* ===== Animations ===== */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.animate { animation: fadeInUp 0.6s ease-out; }

/* Back to top */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 45px;
    height: 45px;
    background: #1a5fb4;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
    font-size: 18px;
}
.back-to-top.show {
    opacity: 1;
    visibility: visible;
}
.back-to-top:hover {
    background: #c41e3a;
    transform: translateY(-3px);
}

/* ===== Carousel ===== */
.carousel {
    position: relative;
    width: 100%;
    overflow: hidden;
    border-radius: 12px;
}
.carousel-inner {
    display: flex;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.carousel-slide {
    flex: 0 0 100%;
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.carousel-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.carousel-slide .slide-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    background: linear-gradient(90deg, rgba(26,95,180,0.85) 0%, rgba(26,95,180,0.4) 60%, transparent 100%);
}
.carousel-slide .slide-text {
    color: #fff;
    padding: 0 8%;
    max-width: 60%;
}
.carousel-slide .slide-text h2 {
    font-size: 38px;
    margin-bottom: 15px;
    line-height: 1.3;
    animation: slideInLeft 0.8s ease-out;
}
.carousel-slide .slide-text p {
    font-size: 16px;
    margin-bottom: 25px;
    line-height: 1.8;
    opacity: 0.9;
    animation: slideInLeft 0.8s ease-out 0.2s both;
}
.carousel-slide .slide-text .slide-btn {
    display: inline-block;
    padding: 12px 32px;
    background: #c41e3a;
    color: #fff;
    border-radius: 30px;
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s;
    animation: slideInLeft 0.8s ease-out 0.4s both;
}
.carousel-slide .slide-text .slide-btn:hover {
    background: #a0182e;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(196,30,58,0.4);
}
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Carousel controls */
.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(255,255,255,0.9);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 22px;
    color: #1a5fb4;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    z-index: 10;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}
.carousel-control:hover {
    background: #fff;
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}
.carousel-control.prev { left: 20px; }
.carousel-control.next { right: 20px; }

/* Carousel indicators */
.carousel-indicators {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}
.carousel-indicator {
    width: 30px;
    height: 4px;
    background: rgba(255,255,255,0.5);
    border: none;
    border-radius: 2px;
    cursor: pointer;
    transition: all 0.3s;
}
.carousel-indicator.active {
    background: #fff;
    width: 45px;
}
.carousel-indicator:hover {
    background: rgba(255,255,255,0.8);
}

/* Product gallery carousel */
.gallery-carousel {
    margin-top: 20px;
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    background: #f0f6ff;
}
.gallery-carousel .carousel-inner {
    display: flex;
    transition: transform 0.5s ease;
}
.gallery-carousel .gallery-slide {
    flex: 0 0 25%;
    padding: 5px;
    box-sizing: border-box;
}
.gallery-carousel .gallery-slide-inner {
    aspect-ratio: 1;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    background: #e8f4ff;
    transition: all 0.3s;
}
.gallery-carousel .gallery-slide-inner:hover {
    transform: scale(0.95);
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}
.gallery-carousel .gallery-slide-inner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.gallery-carousel .carousel-control {
    width: 36px;
    height: 36px;
    font-size: 16px;
    background: #1a5fb4;
    color: #fff;
    opacity: 0;
    transition: all 0.3s;
}
.gallery-carousel:hover .carousel-control {
    opacity: 1;
}
.gallery-carousel .carousel-control:hover {
    background: #c41e3a;
    transform: translateY(-50%) scale(1.1);
}
.gallery-carousel .carousel-control.prev { left: 10px; }
.gallery-carousel .carousel-control.next { right: 10px; }

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.9);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.lightbox.active {
    display: flex;
}
.lightbox-content {
    max-width: 90%;
    max-height: 90%;
    position: relative;
}
.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
}
.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    color: #fff;
    font-size: 30px;
    cursor: pointer;
    transition: all 0.3s;
}
.lightbox-close:hover {
    color: #c41e3a;
    transform: rotate(90deg);
}
.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background: rgba(255,255,255,0.2);
    border: none;
    border-radius: 50%;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.lightbox-nav:hover {
    background: rgba(255,255,255,0.3);
}
.lightbox-nav.prev { left: -70px; }
.lightbox-nav.next { right: -70px; }
.lightbox-counter {
    text-align: center;
    color: #fff;
    margin-top: 15px;
    font-size: 14px;
    opacity: 0.8;
}

/* ===== Product List Section ===== */
.product-list-section {
    padding: 60px 0 80px;
}
.section-header {
    text-align: center;
    margin-bottom: 20px;
}
.section-header h2 {
    font-size: 32px;
    color: #1a5fb4;
    margin-bottom: 12px;
    font-weight: 700;
}
.section-header p {
    font-size: 15px;
    color: #666;
}
.section-header .section-slogan {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: 3px;
    font-family: "STXingkai", "华文行楷", "KaiTi", "楷体", "SimSun", serif;
    display: inline-block;
    line-height: 1.6;
    background: linear-gradient(90deg, #1a5fb4 0%, #4a90c4 50%, #7ab8e0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    position: relative;
    padding-left: 70px;
}
.section-header .section-slogan::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 50px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 120 80'%3E%3Cpath d='M10,50 C10,35 20,25 30,25 C30,15 40,10 50,15 C55,10 65,12 68,20 C75,18 82,25 80,35 C88,35 92,42 88,50 C92,55 88,62 80,60 C78,68 68,70 62,65 C55,72 42,70 38,62 C30,65 22,60 20,52 C14,55 10,50 10,50 Z' fill='rgba(180,215,240,0.5)'/%3E%3Cpath d='M20,52 C20,42 28,35 36,36 C36,28 44,24 52,28 C56,24 64,26 66,32 C72,30 78,36 76,44 C82,44 86,50 82,56 C86,60 82,66 76,64 C74,70 66,72 60,68 C54,74 44,72 40,66 C34,68 26,64 24,56 C18,58 20,52 20,52 Z' fill='rgba(140,200,235,0.35)'/%3E%3Cpath d='M30,55 C30,48 36,43 42,44 C42,38 48,36 54,39 C57,36 63,38 64,43 C69,42 73,46 72,52 C76,52 79,56 76,61 C79,64 76,68 72,67 C70,71 64,72 60,69 C55,73 47,72 44,67 C39,69 33,66 32,60 C28,61 30,55 30,55 Z' fill='rgba(100,180,225,0.2)'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}
.product-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}
.product-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid #eef2f7;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 30px rgba(26,95,180,0.15);
}
.product-card-img {
    width: 100%;
    height: 220px;
    background: #f5f8fc;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.product-card-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform 0.4s ease;
}
.product-card:hover .product-card-img img {
    transform: scale(1.05);
}
.product-card-placeholder {
    color: #999;
    font-size: 14px;
}
.product-card-body {
    padding: 22px 24px 24px;
}
.product-card-title {
    font-size: 17px;
    color: #1a5fb4;
    margin-bottom: 10px;
    font-weight: 600;
    line-height: 1.5;
    min-height: 48px;
}
.product-card-desc {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
    margin-bottom: 14px;
    min-height: 66px;
}
.product-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}
.product-card-tag {
    display: inline-block;
    padding: 4px 12px;
    background: #e8f0fa;
    color: #1a5fb4;
    border-radius: 20px;
    font-size: 12px;
}
.product-card-btn {
    display: inline-block;
    padding: 8px 22px;
    background: linear-gradient(135deg, #1a5fb4 0%, #2d7dd2 100%);
    color: #fff;
    border-radius: 25px;
    font-size: 13px;
    text-decoration: none;
    transition: all 0.3s;
}
.product-card-btn:hover {
    background: linear-gradient(135deg, #c41e3a 0%, #e04a5f 100%);
    transform: translateX(3px);
}

/* Responsive - Product List */
@media (max-width: 992px) {
    .product-list-grid { grid-template-columns: repeat(2, 1fr); }
    .section-header h2 { font-size: 26px; }
}
@media (max-width: 600px) {
    .product-list-grid { grid-template-columns: 1fr; }
    .section-header h2 { font-size: 22px; }
    .product-card-img { height: 180px; }
}

/* ===== Team Section ===== */
.team-section {
    padding: 80px 0;
    background: linear-gradient(180deg, #f8fafc 0%, #fff 100%);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 40px;
    max-width: 1160px;
    margin-left: auto;
    margin-right: auto;
}

.team-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.team-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}

.team-avatar {
    width: 100%;
    height: 240px;
    background: #f8f9fa;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.team-avatar img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

.avatar-placeholder {
    font-size: 80px;
    color: #1a5fb4;
    opacity: 0.3;
}

.team-info {
    padding: 16px 12px;
    text-align: center;
}

.team-info h4 {
    font-size: 20px;
    color: #1a5fb4;
    margin-bottom: 8px;
    font-weight: 600;
}

.team-info .title {
    font-size: 14px;
    color: #c41e3a;
    margin-bottom: 12px;
    font-weight: 500;
}

.team-info p {
    font-size: 13px;
    color: #666;
    line-height: 1.7;
    text-align: center;
}

/* Responsive - Team */
@media (max-width: 992px) {
    .team-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
}
@media (max-width: 600px) {
    .team-grid { grid-template-columns: 1fr; }
    .team-avatar { height: 240px; }
}

/* Responsive */
@media (max-width: 992px) {
    .carousel-slide { min-height: 300px; }
    .carousel-slide .slide-text h2 { font-size: 28px; }
    .carousel-slide .slide-text p { font-size: 14px; }
    .gallery-carousel .gallery-slide { flex: 0 0 33.333%; }
    .lightbox-nav.prev { left: 10px; }
    .lightbox-nav.next { right: 10px; }
}
@media (max-width: 600px) {
    .carousel-slide { min-height: 220px; }
    .carousel-slide .slide-text h2 { font-size: 20px; }
    .carousel-slide .slide-text p { font-size: 12px; margin-bottom: 15px; }
    .carousel-slide .slide-text .slide-btn {
        padding: 8px 20px;
        font-size: 13px;
    }
    .carousel-control {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }
    .carousel-control.prev { left: 10px; }
    .carousel-control.next { right: 10px; }
    .gallery-carousel .gallery-slide { flex: 0 0 50%; }
}

/* ===== New Homepage Layout Styles ===== */

/* Header with slogan */
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}
.header-slogan {
    display: flex;
    gap: 8px;
    align-items: center;
    padding: 6px 18px;
}
.header-slogan .slogan-blue,
.header-slogan .slogan-red {
    font-size: 26px;
    font-weight: 700;
    letter-spacing: 4px;
    font-family: "STXingkai", "华文行楷", "KaiTi", "楷体", serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    text-shadow: 0 0 1px currentColor;
    position: relative;
}
.header-slogan .slogan-blue {
    color: #1a5fb4;
}
.header-slogan .slogan-red {
    color: #c41e3a;
}

/* Product Featured Large */
.product-featured-large {
    display: flex;
    gap: 40px;
    background: #fff;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.08);
    margin-top: 0;
}
.product-large-left {
    flex: 0 0 45%;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}
.product-large-left img {
    max-width: 100%;
    max-height: 420px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    transition: transform 0.3s;
}
.product-featured-large:hover .product-large-left img {
    transform: scale(1.02);
}
.product-large-right {
    flex: 1;
}
.product-large-right h3 {
    font-size: 28px;
    color: #1a5fb4;
    margin-bottom: 10px;
}
.product-large-right .en-name {
    font-size: 14px;
    color: #888;
    margin-bottom: 20px;
    letter-spacing: 1px;
}
.product-large-right p {
    font-size: 15px;
    color: #555;
    line-height: 1.8;
    margin-bottom: 25px;
}
.product-highlights-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}
.highlight-box {
    background: linear-gradient(135deg, #e8f4ff 0%, #d0e8f7 100%);
    border: 1px solid #b8d4f0;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
    font-size: 14px;
    color: #1a5fb4;
    font-weight: bold;
    line-height: 1.5;
    transition: all 0.3s;
}
.highlight-box:hover {
    background: linear-gradient(135deg, #d0e8f7 0%, #b8d4f0 100%);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(26,95,180,0.2);
}

/* Tech Grid 2x3 */
.tech-grid-2x3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-top: 8px;
}
.tech-img-card {
    position: relative;
    border-radius: 10px;
    overflow: hidden;
    aspect-ratio: 16/10;
    cursor: pointer;
    transition: all 0.3s;
}
.tech-img-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}
.tech-img-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.tech-img-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 20px 15px 15px;
    color: #fff;
}
.tech-img-caption h4 {
    font-size: 16px;
    margin-bottom: 5px;
}
.tech-img-caption p {
    font-size: 12px;
    opacity: 0.9;
}

/* News Layout - Left Images, Right List */
.news-layout {
    display: flex;
    gap: 40px;
    margin-top: 8px;
}
.news-images {
    flex: 0 0 45%;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
}
.news-img-item {
    position: relative;
    aspect-ratio: 16/10;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
}
.news-img-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.news-img-item:hover img {
    transform: scale(1.05);
}
.news-img-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: #fff;
    padding: 10px;
    font-size: 12px;
}
.news-list {
    flex: 1;
}
.news-list-item {
    padding: 20px 0;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: background 0.15s ease, padding-left 0.15s ease;
}
.news-list-item:hover {
    background: #f8f9fa;
    padding-left: 15px;
}
.news-list-item:last-child {
    border-bottom: none;
}
.news-list-item .news-date {
    font-size: 13px;
    color: #c41e3a;
    margin-bottom: 8px;
}
.news-list-item h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.5;
}
.news-list-item p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Cases Grid 4 */
.cases-grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 8px;
}
.case-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 15px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    cursor: pointer;
}
.case-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}
.case-card-img {
    aspect-ratio: 16/10;
    overflow: hidden;
}
.case-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}
.case-card:hover .case-card-img img {
    transform: scale(1.05);
}
.case-card-body {
    padding: 15px;
}
.case-card-body h4 {
    font-size: 15px;
    color: #333;
    margin-bottom: 8px;
}
.case-card-body p {
    font-size: 13px;
    color: #666;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Partners Logo Grid */
.partners-logo-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 8px;
}
.partner-logo-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}
.partner-logo-circle {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #fff;
    border: 2px solid #e8f4ff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}
.partner-logo-circle:hover {
    border-color: #1a5fb4;
    transform: scale(1.1);
}
.partner-logo-circle img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}
.partner-logo-item span {
    font-size: 13px;
    color: #555;
    text-align: center;
}

/* Footer QR Code */
.footer-qrcode {
    text-align: center;
}
.footer-qrcode {
    text-align: center;
    padding-top: 6px;
}
.footer-qrcode img {
    width: 132px;
    height: 132px;
    padding: 5px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 6px 16px rgba(0, 20, 60, 0.28);
    margin-bottom: 10px;
    display: block;
    margin-left: auto;
    margin-right: auto;
}
.footer-qrcode div {
    font-size: 12px;
    color: #aaa;
    line-height: 1.5;
    white-space: nowrap;
}

/* ===== Mobile Menu Button ===== */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}
.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: #333;
    border-radius: 2px;
    transition: all 0.3s;
}
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Page Banner ===== */
.page-banner {
    padding: 60px 0;
    color: #fff;
    text-align: center;
}
.page-banner h1 {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 12px;
    letter-spacing: 4px;
}
.page-banner p {
    font-size: 16px;
    opacity: 0.9;
    letter-spacing: 2px;
}

/* ===== Masonry / Waterfall Grid ===== */
.masonry-grid {
    column-count: 3;
    column-gap: 24px;
}
.masonry-item {
    break-inside: avoid;
    margin-bottom: 24px;
    cursor: pointer;
    animation: fadeInUp 0.5s ease both;
}
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
.masonry-card {
    background: #fff;
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.masonry-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.12);
}
.masonry-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 16px;
}
.masonry-title {
    font-size: 18px;
    font-weight: bold;
    color: #222;
    margin-bottom: 8px;
}
.masonry-subtitle {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 12px;
}
.masonry-img {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 12px;
}
.masonry-img img {
    width: 100%;
    display: block;
    transition: transform 0.3s;
}
.masonry-card:hover .masonry-img img {
    transform: scale(1.05);
}
.masonry-tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    margin-bottom: 10px;
}
.masonry-more {
    font-size: 13px;
    color: #1a5fb4;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.3s;
}
.masonry-card:hover .masonry-more {
    opacity: 1;
}

/* ===== Detail Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    padding: 20px;
    backdrop-filter: blur(4px);
}
.modal-content {
    background: #fff;
    border-radius: 16px;
    max-width: 700px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    animation: modalIn 0.3s ease;
}
@keyframes modalIn {
    from { opacity: 0; transform: scale(0.95) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}
.modal-close-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: rgba(0,0,0,0.06);
    font-size: 22px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: background 0.2s;
}
.modal-close-btn:hover { background: rgba(0,0,0,0.12); }
.detail-header {
    padding: 32px 32px 20px;
    display: flex;
    align-items: center;
    gap: 20px;
}
.detail-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    flex-shrink: 0;
}
.detail-header h2 {
    font-size: 24px;
    color: #222;
    margin-bottom: 6px;
}
.detail-header p {
    font-size: 14px;
    color: #666;
}
.detail-cover {
    padding: 0 32px;
    margin-bottom: 20px;
}
.detail-cover img {
    width: 100%;
    border-radius: 12px;
}
.detail-content {
    padding: 0 32px 32px;
    font-size: 15px;
    line-height: 1.8;
    color: #444;
}
.detail-content h2 {
    font-size: 18px;
    color: #222;
    margin: 20px 0 10px;
}
.detail-content ul {
    padding-left: 20px;
    list-style: disc;
}
.detail-content li {
    margin-bottom: 6px;
}

/* ===== Responsive ===== */
@media (max-width: 992px) {
    .header-slogan { display: none; }
    .mobile-menu-btn { display: flex; }
    .nav-menu {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #fff;
        flex-direction: column;
        padding: 16px 0;
        box-shadow: 0 8px 24px rgba(0,0,0,0.1);
    }
    .nav-menu.open { display: flex; }
    .nav-item { width: 100%; }
    .nav-item a { padding: 12px 24px; display: block; }
    .nav-dropdown {
        position: static;
        transform: none;
        box-shadow: none;
        background: #f8f9fa;
        min-width: auto;
        opacity: 1;
        visibility: visible;
        display: none;
    }
    .nav-item:hover .nav-dropdown { display: block; }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-right { flex: 0 0 auto; }
    .product-featured-large { flex-direction: column; }
    .product-large-left { flex: 0 0 auto; max-height: none; overflow: visible; }
    .product-large-left img { max-height: none; height: auto; object-fit: fill; }
    .tech-grid-2x3 { grid-template-columns: repeat(2, 1fr); }
    .news-layout { flex-direction: column; }
    .news-images { flex: 0 0 auto; }
    .cases-grid-4 { grid-template-columns: repeat(2, 1fr); }
    .partners-logo-grid { grid-template-columns: repeat(3, 1fr); }
    .masonry-grid { column-count: 2; }
    .page-banner h1 { font-size: 28px; }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
    .container { padding: 0 16px; }
    .section { padding: 40px 0; }
    .section-header h2 { font-size: 22px; }
    .tech-grid-2x3 { grid-template-columns: 1fr; }
    .cases-grid-4 { grid-template-columns: 1fr; }
    .partners-logo-grid { grid-template-columns: repeat(2, 1fr); }
    .product-highlights-grid { grid-template-columns: repeat(2, 1fr); }
    .masonry-grid { column-count: 1; }
    .page-banner { padding: 40px 0; }
    .page-banner h1 { font-size: 24px; letter-spacing: 2px; }
    .footer-content { grid-template-columns: 1fr; }
    .detail-header { padding: 24px 20px 16px; flex-direction: column; text-align: center; }
    .detail-content { padding: 0 20px 24px; }
    .detail-cover { padding: 0 20px; }
    .scientist-inner { flex-direction: column; align-items: center; text-align: center; }
    .scientist-name span { writing-mode: horizontal-tb; }
    .hero-bullets { text-align: left; }
}

/* Hide cases nav/footer items (news is now visible) */
.nav-item a[href="cases.html"],
.footer-links a[href="cases.html"] {
    display: none !important;
}

/* ===== 风雅感增强设计 ===== */

/* 1. 全局字体优化 - 更优雅的中文排版 */
body {
    font-family: "PingFang SC", "Microsoft YaHei", "Noto Serif SC", "STSong", serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* 2. 板块间云纹分隔装饰 */
.section::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, #c41e3a, transparent);
    margin: 0 auto;
    opacity: 0.3;
}
.section:last-child::after {
    display: none;
}

/* 3. 标题两侧装饰线 - 传统卷轴风格（覆盖原::before） */
.section-header h2 {
    position: relative;
    padding: 0 20px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    letter-spacing: 1px;
}
.section-header h2::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, #1a5fb4, #2E7CD6);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(26, 95, 180, 0.3);
}
.section-header h2::after {
    content: '';
    position: absolute;
    right: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, #1a5fb4, #2980b9);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(26, 95, 180, 0.3);
}

/* 4. 板块交替背景 - 水墨淡彩效果 */
.section:nth-child(odd) {
    background: linear-gradient(180deg, #fafbfc 0%, #f5f7fa 100%);
}
.section:nth-child(even) {
    background: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
}

/* 5. 卡片精致悬浮效果 */
.product-featured, .tech-img-card, .partner-logo-item {
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
}
.product-featured:hover, .tech-img-card:hover, .partner-logo-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.12);
}

/* 6. 滚动渐入动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section {
    animation: fadeInUp 0.8s ease-out;
}

/* 7. 导航栏精致化 */
.header {
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.nav-item a {
    position: relative;
    transition: all 0.3s ease;
}

.nav-item a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #1a5fb4, #2E7CD6);
    transition: width 0.3s ease;
}

.nav-item:hover a::after,
.nav-item.active a::after {
    width: 80%;
}

/* 8. 页脚精致化 */
.footer {
    background: linear-gradient(180deg, #1e3d5f 0%, #0f2027 100%);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #c41e3a, #1a5fb4, #c41e3a);
}

/* 9. 按钮光泽效果 */
.btn-primary, .more-link {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.btn-primary::before, .more-link::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 ease;
}

.btn-primary:hover::before, .more-link:hover::before {
    left: 100%;
}

/* 10. 合作伙伴区域精致化 */
.partner-logo-circle {
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.partner-logo-item:hover .partner-logo-circle {
    border-color: #1a5fb4;
    box-shadow: 0 0 20px rgba(26, 95, 180, 0.2);
}

/* 11. 技术优势卡片精致化 */
.tech-img-card {
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.tech-img-card:hover {
    border-color: rgba(26, 95, 180, 0.3);
}

/* 12. 响应式优化 */
@media (max-width: 768px) {
    .section-header h2::before,
    .section-header h2::after {
        display: none;
    }
    
    .section-header h2 {
        padding: 0;
    }
}