* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #003c96;
    --primary-light: #073c96;
    --primary-dark: #002a63;
    --accent-color: #fed806;
    --text-dark: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --text-white: #fff;
    --bg-light: #f1f4fb;
    --bg-white: #fff;
    --bg-gray: #f8f8f8;
    --footer-bg: #0f1d37;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --transition-normal: 0.3s ease;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'HarmonyOS Sans SC', 'Montserrat', '阿里妈妈数黑体', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--bg-white);
    overflow-x: hidden;
}

.container {
    width: 95%;
    max-width: 1600px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(168, 219, 240, 0.9);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.header-nav {
    background: linear-gradient(180deg, #003c96 0%, #073c96 100%);
    box-shadow: 0 2px 8px rgba(0, 60, 150, 0.3);
    border-bottom: 3px solid #fed806;
}

.logo {
    margin-bottom: 0;
}

.logo a {
    display: block;
}

.logo img {
    height: 45px;
}
.nav, .nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 0;
    width: 100%;
}

.nav-item {
    position: relative;
    flex: 1;
    text-align: center;
}

.nav-link-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.nav-link {
    display: block;
    padding: 15px 10px;
    color: #fff;
    text-decoration: none;
    font-size: 20px;
    font-weight: 600;
    transition: all 0.2s ease;
    position: relative;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    width: 100%;
}

.nav-link:hover {
    color: #fed806;
    background: rgba(255, 255, 255, 0.1);
}

.nav-list li:last-child .nav-link {
    border-right: none;
}

.language-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-light);
    border-radius: 20px;
    padding: 4px;
    border: 1px solid var(--border-color);
}

.language-btn {
    display: inline-block;
    padding: 6px 16px;
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    border-radius: 16px;
    transition: var(--transition-normal);
    color: var(--text-dark);
}

.language-btn:hover {
    color: var(--primary-color);
}

.language-btn.active {
    background: var(--primary-color);
    color: var(--text-white);
    box-shadow: var(--shadow-sm);
}

.language-btn.active:hover {
    background: var(--primary-light);
    color: var(--text-white);
}

.dropdown-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 12px 10px;
    color: var(--text-dark);
    transition: var(--transition-normal);
}

@media (min-width: 769px) {
    .dropdown-toggle {
        display: block;
        color: #fff;
        padding: 0;
        margin-left: 4px;
    }
}

@media (min-width: 769px) {
    .nav-link-wrapper:hover .dropdown-toggle {
        color: #fed806;
    }
}

.dropdown-menu a svg {
    display: inline-block;
    margin-right: 10px;
    vertical-align: middle;
    color: #003c96;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.dropdown-menu a:hover svg {
    color: #fed806;
    transform: scale(1.1);
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    text-align: left;
}

.dropdown-menu a span {
    text-align: left;
}

.dropdown-toggle {
    display: none !important;
}

.nav-link-wrapper {
    justify-content: center !important;
}

.dropdown-toggle svg {
    transition: transform 0.3s ease;
}

.has-dropdown.active .dropdown-toggle svg {
    transform: rotate(180deg);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    transform: translateY(10px);
    min-width: 400px;
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15), 0 0 0 1px rgba(0, 60, 150, 0.1);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 12px;
    z-index: 1001;
    border: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px 8px;
}

.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -8px;
    left: 30px;
    transform: translateX(-50%);
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 8px solid #fff;
    filter: drop-shadow(0 -2px 4px rgba(0, 0, 0, 0.05));
}

.dropdown-menu li {
    list-style: none;
    position: relative;
    width: 100%;
}

.dropdown-menu a {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    padding: 10px 12px;
    color: #333;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.2s ease;
    border-radius: 6px;
    text-align: left;
}

.dropdown-menu a:hover {
    color: #003c96;
    background: rgba(0, 60, 150, 0.08);
}

.dropdown-menu li:last-child a {
    border-bottom: none;
}

.banner-section {
    position: relative;
    width: 100%;
    height: 600px;
    overflow: hidden;
    background: #003c96;
}

.banner-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.banner-slide.active {
    opacity: 1;
    visibility: visible;
}

.banner-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
    max-width: 800px;
    padding: 0 20px;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.banner-slide.active .banner-content {
    opacity: 1;
    transform: translateY(0);
}

.banner-content h1 {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
    font-size: 64px;
    font-weight: 700;
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
    line-height: 1.2;
}

.banner-content p {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.4s;
    font-size: 32px;
    margin-bottom: 32px;
}

.banner-slide.active .banner-content h1,
.banner-slide.active .banner-content p {
    opacity: 1;
    transform: translateY(0);
}

.banner-btn {
    display: inline-block;
    padding: 12px 32px;
    background: var(--primary-color);
    color: var(--text-white);
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.banner-btn:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.banner-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    padding: 0 60px;
    pointer-events: none;
    z-index: 10;
    opacity: 1;
}

.banner-btn-prev,
.banner-btn-next {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(0, 60, 150, 0.8);
    border: none;
    color: var(--text-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
    pointer-events: all;
}

.banner-btn-prev:hover,
.banner-btn-next:hover {
    background: var(--primary-color);
    transform: scale(1.05);
}

.banner-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.banner-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.8);
    cursor: pointer;
    transition: var(--transition-normal);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.banner-dot.active {
    width: 32px;
    border-radius: 6px;
    background: var(--accent-color);
    border-color: var(--accent-color);
    box-shadow: 0 2px 12px rgba(254, 216, 6, 0.6);
}

.banner-dot:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--text-white);
    transform: scale(1.1);
}

.banner-scroll-indicator {
    position: absolute;
    bottom: 30px;
    right: 40px;
    transform: none;
    z-index: 10;
    animation: bounce 2s infinite;
    opacity: 1;
    pointer-events: none;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-10px);
    }
    60% {
        transform: translateY(-5px);
    }
}

.section {
    padding: 30px 0 60px;
}

.section.about-section {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    width: 95%;
    max-width: 1600px;
    margin: 0 auto;
    box-sizing: border-box;
}

.section-header {
    text-align: left;
    margin-bottom: 40px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    margin: 0;
}

.section-title-link {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    cursor: pointer;
}

.section-title-link:hover {
    color: var(--text-dark);
    transform: translateY(-2px);
    text-decoration: none;
}

.section-header p {
    font-size: 14px;
    color: var(--text-light);
    margin: 0;
}

.business-section {
    background: var(--bg-light);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.business-card {
    background: var(--bg-white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.business-icon {
    display: inline-flex;
    margin-bottom: 24px;
}

.business-card h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.business-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.news-card {
    background: var(--bg-white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.news-card:hover {
    box-shadow: var(--shadow-lg);
}

.news-card.featured {
    grid-column: span 2;
}

.news-image {
    width: 100%;
    height: 240px;
}

.news-card.featured .news-image {
    height: 300px;
}

.news-content {
    padding: 24px;
}

.news-tag {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 60, 150, 0.1);
    color: var(--primary-color);
    font-size: 12px;
    font-weight: 600;
    border-radius: 4px;
    margin-bottom: 12px;
}

.news-card h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
    line-height: 1.4;
}

.news-card.featured h3 {
    font-size: 22px;
}

.news-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 16px;
}

.news-date {
    font-size: 13px;
    color: var(--text-light);
    white-space: nowrap;
}

.about-title-container {
    width: 95%;
    max-width: 1600px;
    margin: 0 auto 10px auto;
    display: flex;
    align-items: center;
    gap: 15px;
    box-sizing: border-box;
}

.about-main-title {
    font-size: 28px;
    font-weight: 700;
    color: #1e4d8c;
    margin: 0;
    padding-left: 15px;
    border-left: 4px solid #f5a623;
    display: inline-block;
}

.about-english-title {
    font-size: 36px;
    font-weight: 800;
    color: rgba(30, 77, 140, 0.15);
    text-transform: uppercase;
    letter-spacing: 4px;
}

.about-section {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    width: 100%;
    max-width: 1600px;
    margin: 0 auto;
    box-sizing: border-box;
}

@media (min-width: 1201px) {
    .about-section {
        min-height: 600px;
    }
}

.about-bg-image {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('/static/index/images/gsjjbj.jpg') center/cover no-repeat;
    z-index: 0;
}

.about-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.85);
    z-index: 1;
}

.about-wrapper {
    max-width: 100%;
    margin: 0;
    padding: 15px 20px;
    position: relative;
    z-index: 2;
}

.about-content-inner {
    max-width: 100%;
}



.about-subtitle {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin: 20px 0 30px 0;
    padding-left: 24px;
}

.about-description {
    margin-bottom: 40px;
    text-align: right;
    width: 95%;
    max-width: 1600px;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
}

.about-description p {
    font-size: 20px;
    color: #333;
    line-height: 1.9;
    text-align: justify;
    padding-left: 15px;
    margin-left: 700px;
    margin-bottom: 20px;
    padding: 50px;
}

@media (max-width: 1200px) {
    .about-description p {
        margin-left: 0;
        font-size: 18px;
    }
    .about-main-title { font-size: 26px; }
    .about-english-title { font-size: 30px; }
}

.about-more-btn {
    display: inline-block;
    color: #fff;
    background: #1e4d8c;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 30px;
    margin-right: 15px;
    transition: all 0.3s ease;
    border-radius: 4px;
}

@media (max-width: 1200px) {
    .about-more-btn {
        margin-right: 15px;
    }
}

.about-more-btn:hover {
    background: #153a6b;
    padding-left: 30px;
}

.about-nav-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    padding-left: 715px;
}

@media (max-width: 1200px) {
    .about-nav-links {
        padding-left: 15px;
    }
}

.about-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 25px 15px;
    background: transparent;
    border: none;
    border-radius: 8px;
    text-decoration: none;
    color: #fff;
    transition: all 0.3s ease;
    position: relative;
}

.about-nav-item:hover {
    transform: translateY(-5px) scale(1.02);
}

.about-nav-icon {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #fff;
    position: relative;
    transition: all 0.3s ease;
}

.about-nav-icon::before {
    content: '';
    position: absolute;
    top: -3px;
    left: -3px;
    right: -3px;
    bottom: -3px;
    border-radius: 50%;
    border: 2px solid transparent;
    border-top-color: #fff;
    opacity: 0;
    transition: all 0.3s ease;
}

.about-nav-icon::after {
    content: '';
    position: absolute;
    top: -6px;
    left: -6px;
    right: -6px;
    bottom: -6px;
    border-radius: 50%;
    border: 1px solid transparent;
    border-top-color: rgba(255, 255, 255, 0.6);
    border-right-color: rgba(255, 255, 255, 0.4);
    opacity: 0;
    transition: all 0.4s ease;
}

.about-nav-item:hover .about-nav-icon {
    transform: rotate(10deg) scale(1.1);
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.7);
    background: #fff;
}

.about-nav-item:hover .about-nav-icon::before {
    opacity: 1;
    animation: spin 1s linear infinite;
}

.about-nav-item:hover .about-nav-icon::after {
    opacity: 1;
    animation: spin 1.5s linear infinite reverse;
}

.about-nav-icon svg {
    color: #1e4d8c;
    width: 48px;
    height: 48px;
    transition: all 0.3s ease;
}

.about-nav-item:hover .about-nav-icon svg {
    filter: drop-shadow(0 0 6px rgba(30, 77, 140, 0.4));
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.about-nav-item span {
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    position: relative;
    transition: all 0.3s ease;
}

.about-nav-item span::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #fff, rgba(255, 255, 255, 0.6), #fff);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.about-nav-item:hover span {
    color: #fff;
    font-weight: 600;
    transform: translateY(2px);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.about-nav-item:hover span::after {
    width: 100%;
}

.about-right {
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-image-wrapper {
    position: relative;
    width: 100%;
    height: 100%;
}

.about-main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.news-section {
    background: var(--bg-white);
}

.news-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.news-slider-column {
    height: 100%;
}

.news-slider {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
    height: 100%;
    min-height: 400px;
}

.slider-container {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 400px;
}

.slider-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.slider-slide.active {
    opacity: 1;
}

.slider-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.slider-ai-badge {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 5;
    background: rgba(1, 90, 170, 0.55);
    color: #fff;
    padding: 10px 20px;
    border-radius: 0 0 8px 0;
    font-size: 22px;
    font-weight: 700;
    letter-spacing: 2px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    box-shadow: 2px 2px 8px rgba(1, 90, 170, 0.3);
}

.slider-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.6);
    padding: 25px 20px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 20px;
}

.slider-date {
    background: #015AAA;
    padding: 10px 15px;
    text-align: center;
    min-width: 70px;
}

.slider-date .date-day {
    display: block;
    font-size: 28px;
    font-weight: 700;
    line-height: 1;
}

.slider-date .date-month {
    display: block;
    font-size: 12px;
    margin-top: 5px;
    opacity: 0.9;
}

.slider-title {
    flex: 1;
}

.slider-caption h3 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    line-height: 1.4;
}

.slider-dots {
    position: absolute;
    bottom: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 10;
}

.slider-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
}

.slider-dot.active {
    background: #fff;
    width: 24px;
    border-radius: 5px;
}

.slider-prev,
.slider-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.3);
    color: #fff;
    border: none;
    width: 40px;
    height: 40px;
    font-size: 20px;
    cursor: pointer;
    transition: background 0.3s ease;
    z-index: 10;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slider-prev:hover,
.slider-next:hover {
    background: rgba(0, 0, 0, 0.6);
}

.slider-prev {
    left: 15px;
}

.slider-next {
    right: 15px;
}

.about-column-content {
    display: flex;
    gap: 24px;
    align-items: flex-start;
}

.about-column .about-text {
    flex: 1;
}

.about-column .about-text p{
    padding: 10px;
    border-radius: 10px;
    font-size: 18px;
}

.about-column h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--border-color);
}

.about-column {
    display: flex;
    flex-direction: column;
    border-radius: 8px;
    overflow: hidden;
}

.about-header {
    position: relative;
    padding-bottom: 12px;
    margin-bottom: 0;
    overflow: hidden;
}

.header-bg-text {
    position: absolute;
    top: -10px;
    left: 0;
    font-size: 56px;
    font-weight: 700;
    color: rgba(0, 0, 0, 0.05);
    text-transform: uppercase;
    letter-spacing: 4px;
    white-space: nowrap;
}

.about-header h2 {
    position: relative;
    font-size: 28px;
    font-weight: 700;
    color: #015AAA;
    padding-left: 20px;
    margin-bottom: 8px;
    z-index: 1;
}

.about-header h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 24px;
    background: #FDC600;
}

.header-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    padding-left: 20px;
    margin: 0;
}

.about-content {
    position: relative;
    flex: 1;
}

.about-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(1, 90, 170, 0.3);
    z-index: 1;
}

.about-text {
    position: relative;
    z-index: 2;
    padding: 18px 24px 24px;
}

.about-text p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.8;
    margin-bottom: 16px;
    text-indent: 2em;
    text-align: justify;
}

.about-btn {
    display: inline-block;
    margin-top: 12px;
    margin-left: auto;
    padding: 10px 24px;
    background: var(--primary-color);
    color: var(--text-white);
    text-decoration: none;
    font-size: 13px;
    font-weight: 600;
    border-radius: 4px;
    transition: var(--transition-normal);
    float: right;
}

.about-btn:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.about-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin-top: 40px;
    padding-top: 40px;
    clear: both;
}

.about-link-item {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 12px 8px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-white);
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition-normal);
    font-size: 16px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-link-item:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateX(5px);
}

.about-link-item svg {
    flex-shrink: 0;
}

.news-column {
    background: #fff;
    padding: 20px;
}

.news-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
}

.news-tabs,
.news-links {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
}

.news-tab,
.news-link {
    padding: 10px 16px;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-dark);
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    border-radius: 4px 4px 0 0;
    transition: var(--transition-normal);
    margin-right: 8px;
    text-decoration: none;
}

.news-tab:hover,
.news-link:hover {
    background: var(--bg-white);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.news-tab.active,
.news-link.active {
    background: var(--primary-color);
    color: var(--text-white);
    border-color: var(--primary-color);
}

.news-content-area {
    position: relative;
}

.news-list {
    display: none;
}

.news-list.active {
    display: block;
}

.news-item {
    padding: 12px 0;
    border-bottom: 1px solid #eee;
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    gap: 16px;
}

.news-item:last-child {
    border-bottom: none;
}

.news-item:hover .news-date {
    background: #015AAA;
    color: #fff;
    border-color: #015AAA;
    transform: scale(1.05);
}

.news-item:hover h4 {
    color: #015AAA;
    transform: translateX(5px);
}

.news-item .news-date {
    font-size: 14px;
    color: #666;
    flex-shrink: 0;
    order: 1;
    border: 1px solid #ddd;
    padding: 6px 12px;
    border-radius: 4px;
    background: #f9f9f9;
    transition: all 0.3s ease;
}

.news-item h4 {
    font-size: 17px;
    font-weight: 500;
    color: #333;
    line-height: 1.6;
    transition: all 0.3s ease;
    order: 2;
    margin: 0;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.news-item h4 a {
    color: inherit;
    text-decoration: none;
    display: block;
}

.news-item h4 a:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.news-more {
    flex-shrink: 0;
}

.news-more-link {
    display: inline-block;
    color: #666;
    text-decoration: none;
    font-size: 16px;
    padding: 10px 20px;
    transition: all 0.3s ease;
}

.news-more-link:hover {
    color: #015AAA;
}

.news-more-link span {
    margin-left: 4px;
    transition: transform 0.3s ease;
    display: inline-block;
}

.news-more-link:hover span {
    transform: translateX(4px);
}

.contact-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    margin-right: 8px;
    color: var(--text-muted);
    vertical-align: middle;
}

.projects-section {
    background: var(--bg-light);
    overflow: hidden;
}

.honors-section {
    padding: 40px 0;
    background: linear-gradient(135deg, #003c96 0%, #0052cc 100%);
    margin: 40px 0;
}

.stock-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding: 24px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.stock-code {
    text-align: center;
    color: white;
}

.stock-code h3 {
    font-size: 24px;
    font-weight: 700;
    margin: 0 0 8px 0;
}

.stock-code p {
    font-size: 14px;
    opacity: 0.9;
    margin: 0;
}

.award-info {
    flex: 1;
    margin-left: 40px;
    color: white;
}

.award-info p {
    font-size: 14px;
    line-height: 1.6;
    margin: 0;
}

.honors-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.honor-item {
    flex: 1;
    min-width: 180px;
    max-width: 220px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.honor-item:hover {
    transform: translateY(-5px) scale(1.02);
}

.honor-content {
    background: white;
    border-radius: 10px;
    padding: 20px 16px;
    border: 1px solid #e5e7eb;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.honor-content::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 0.6s ease;
}

.honor-item:hover .honor-content {
    box-shadow: 0 8px 24px rgba(0, 60, 150, 0.15);
    border-color: #003c96;
}

.honor-item:hover .honor-content::before {
    left: 100%;
}

.honor-text {
    font-size: 16px;
    font-weight: 600;
    color: #333;
    line-height: 1.4;
}

.honor-text .highlight {
    color: #3498db;
    font-weight: 700;
    animation: highlightPulse 2s infinite;
}

@keyframes highlightPulse {
    0% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.advantages-section {
    padding: 0;
    margin: 60px auto;
    width: 95%;
    max-width: 1600px;
    box-sizing: border-box;
}

.advantages-container {
    display: flex;
    width: 100%;
}

.advantages-left {
    width: 35%;
    padding: 60px 40px 60px 15px;
    background: #fff;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.advantages-title-wrap {
    position: relative;
    margin-bottom: 25px;
}

.advantages-english {
    font-size: 28px;
    font-weight: 300;
    color: rgba(30, 77, 140, 0.4);
    text-transform: uppercase;
    letter-spacing: 5px;
    margin-bottom: 8px;
}

.advantages-title {
    font-size: 28px;
    font-weight: 700;
    color: #1e4d8c;
    margin: 0;
    padding-left: 22px;
    border-left: 5px solid #f5a623;
    line-height: 1.2;
}

.advantages-desc {
    font-size: 19px;
    color: #555;
    line-height: 2;
    margin-bottom: 35px;
    text-align: justify;
}

.advantages-btn {
    display: inline-block;
    background: #1e4d8c;
    color: #fff;
    padding: 14px 40px;
    font-size: 18px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s ease;
    align-self: flex-start;
}

.advantages-btn:hover {
    background: #153a6b;
}

/* ===== 专业优势手风琴效果 ===== */
.advantages-grid {
    display: flex;
    flex-direction: row;
    width: 65%;
    height: 400px;
    overflow: hidden;
}

.advantage-card {
    display: block;
    position: relative;
    overflow: hidden;
    text-decoration: none;
    color: inherit;
    /* 默认宽度：4等分的一半，即约12.5%；hover展开到约50%，其余收缩 */
    flex: 1 1 0;
    transition: flex 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 0;
}

/* 手风琴效果：整个grid hover时，非active卡片收缩 */
.advantages-grid:hover .advantage-card {
    flex: 0.4 1 0;
}

.advantages-grid .advantage-card:hover {
    flex: 3 1 0;
}

.advantage-image {
    width: 100%;
    height: 100%;
    position: relative;
}

.advantage-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 图片始终保持完整尺寸，通过父级overflow:hidden裁切 */
    transition: transform 0.5s ease;
}

.advantage-card:hover .advantage-image img {
    transform: scale(1.05);
}

.advantage-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 60, 150, 0.75) 0%, rgba(30, 77, 140, 0.55) 100%);
    z-index: 1;
    transition: opacity 0.4s ease;
}

.advantage-card:hover .advantage-overlay {
    opacity: 0;
}

/* 图标呼吸动画 */
@keyframes iconBreathe {
    0%, 100% {
        transform: translate(-50%, -65%) scale(1);
        border-color: rgba(255, 255, 255, 0.4);
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.4);
    }
    50% {
        transform: translate(-50%, -65%) scale(1.08);
        border-color: rgba(255, 255, 255, 0.9);
        box-shadow: 0 0 20px 4px rgba(255, 255, 255, 0.25);
    }
}

.advantage-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -65%);
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    z-index: 2;
    transition: all 0.4s ease;
    white-space: nowrap;
    animation: iconBreathe 2.5s ease-in-out infinite;
}

/* 每张卡片延迟不同，制造波浪感 */
.advantage-card:nth-child(1) .advantage-icon { animation-delay: 0s; }
.advantage-card:nth-child(2) .advantage-icon { animation-delay: 0.6s; }
.advantage-card:nth-child(3) .advantage-icon { animation-delay: 1.2s; }
.advantage-card:nth-child(4) .advantage-icon { animation-delay: 1.8s; }

.advantage-card:hover .advantage-icon {
    background: rgba(255, 255, 255, 0.35);
    border-color: rgba(255, 255, 255, 1);
    box-shadow: 0 0 30px 8px rgba(255, 255, 255, 0.4);
    transform: translate(-50%, -65%) scale(1.15);
    animation: none;
}

.advantage-title {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    text-align: center;
    z-index: 2;
    font-size: 22px;
    font-weight: 600;
    color: #fff;
    margin: 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    white-space: nowrap;
    transition: opacity 0.4s ease, bottom 0.4s ease;
}

/* 已废弃：title 直接使用 h3.advantage-title，不再嵌套 */


.projects-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.project-card {
    background: var(--bg-white);
    border-radius: 4px;
    overflow: hidden;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.project-image {
    width: 100%;
    height: 160px;
    border-bottom: 1px solid var(--border-color);
}

.project-content {
    padding: 16px;
}

.project-content h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--primary-color);
}

.project-content p {
    font-size: 13px;
    color: var(--text-dark);
    line-height: 1.6;
}



.clients-section {
    background: var(--bg-white);
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.clients-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
    align-items: center;
}

.client-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    border-radius: 0;
    transition: var(--transition-normal);
}

.client-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.client-item img {
    width: 200px;
    height: 80px;
    object-fit: cover;
}

.footer {
    background: #0f1d37;
    color: rgba(255, 255, 255, 0.9);
    padding: 40px 0 20px;
    position: relative;
}

.footer .container {
    max-width: 1400px;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 30px;
}

.footer-contact-info {
    display: flex;
    gap: 50px;
    flex: 1;
}

.contact-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.contact-icon-circle {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: rgba(255, 255, 255, 0.9);
}

.contact-content h5 {
    font-size: 19px;
    font-weight: 600;
    margin: 0 0 8px 0;
    color: #fff;
}

.contact-content p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    margin: 4px 0;
    line-height: 1.6;
}

.footer-qrcodes {
    display: flex;
    gap: 25px;
}

.qrcode-item {
    text-align: center;
}

.qrcode-img {
    width: 90px;
    height: 90px;
    background: white;
    border-radius: 4px;
    margin-bottom: 8px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.qrcode-item p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

.footer-nav {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 20px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 30px;
}

.nav-column h5 {
    font-size: 14px;
    font-weight: 600;
    color: #fff;
    margin: 0 0 15px 0;
}

.nav-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-column li {
    margin-bottom: 8px;
}

.nav-column a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-column a:hover {
    color: #fff;
}

.footer-links-section {
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.15);
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    gap: 30px;
}

.footer-links-section h5 {
    font-size: 18px;
    font-weight: 600;
    color: #fff;
    margin: 0;
    flex-shrink: 0;
}

.links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 25px;
}

.links-list a {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.links-list a:hover {
    color: #fff;
}

.link-separator {
    color: rgba(255, 255, 255, 0.3);
    font-size: 17px;
    user-select: none;
}

.footer-bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.footer-bottom-left {
    display: flex;
    gap: 20px;
}

.footer-bottom-left a {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom-left a:hover {
    color: #fff;
}

.footer-bottom-right {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
}

.footer-bottom-right p {
    font-size: 17px;
    color: rgba(255, 255, 255, 0.7);
    margin: 0;
}

.footer-bottom-right a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-bottom-right a:hover {
    color: #fff;
}

@media (max-width: 1200px) {
    .footer-top {
        flex-direction: column;
        gap: 30px;
        align-items: center;
    }
    
    .footer-contact-info {
        flex-wrap: wrap;
        justify-content: center;
        gap: 30px;
    }
    
    .footer-qrcodes {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .footer {
        padding: 30px 0 15px;
    }
    
    .footer-top {
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    
    .footer-contact-info {
        flex-direction: column;
        align-items: center;
        gap: 25px;
    }
    
    .contact-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 10px;
        width: 100%;
        padding: 15px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }
    
    .contact-item:last-child {
        border-bottom: none;
    }
    
    .contact-content h5 {
        font-size: 16px;
    }
    
    .contact-content p {
        font-size: 14px;
    }
    
    .footer-qrcodes {
        gap: 20px;
    }
    
    .qrcode-img {
        width: 80px;
        height: 80px;
    }
    
    .qrcode-item p {
        font-size: 14px;
    }
    
    .footer-links-section {
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    
    .footer-links-section h5 {
        font-size: 16px;
        text-align: center;
    }
    
    .links-list {
        justify-content: center;
        gap: 15px;
    }
    
    .links-list a {
        font-size: 14px;
    }
    
    .footer-bottom {
        gap: 8px;
    }
    
    .footer-bottom-left {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }
    
    .footer-bottom-left a {
        font-size: 14px;
    }
    
    .footer-bottom-right {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
    
    .footer-bottom-right p {
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .footer-contact-info {
        gap: 20px;
    }
    
    .contact-item {
        gap: 8px;
    }
    
    .contact-content h5 {
        font-size: 15px;
    }
    
    .contact-content p {
        font-size: 13px;
    }
    
    .footer-qrcodes {
        flex-direction: column;
        gap: 15px;
    }
    
    .qrcode-img {
        width: 70px;
        height: 70px;
    }
    
    .qrcode-item p {
        font-size: 13px;
    }
    
    .links-list {
        gap: 12px;
    }
    
    .links-list a {
        font-size: 13px;
    }
    
    .footer-bottom-left {
        gap: 12px;
    }
    
    .footer-bottom-left a {
        font-size: 13px;
    }
    
    .footer-bottom-right p {
        font-size: 13px;
    }
}

@media (max-width: 1920px) {
    .container {
        width: 90%;
        max-width: 1600px;
    }
}

@media (max-width: 1200px) {
    .container {
        width: 95%;
        max-width: 1200px;
    }
    
    .business-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .advantages-container {
        flex-direction: column;
    }
    
    .advantages-left {
        width: 100%;
        padding: 40px 20px;
    }
    
    .advantages-grid {
        width: 100%;
        height: 280px;
        display: flex;
        flex-direction: row;
    }
    
    .advantage-icon {
        width: 60px;
        height: 60px;
    }
    
    .advantage-title {
        font-size: 18px;
    }
    
    .news-card.featured {
        grid-column: span 1;
    }
    
    .news-grid {
        grid-template-columns: 1fr 1fr;
        gap: 24px;
    }
    
    .about-text {
        padding: 16px 20px;
    }
    
    .about-column p {
        font-size: 15px;
        line-height: 1.7;
    }
    
    .about-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
        margin-top: 24px;
        padding-top: 24px;
    }
    
    .about-link-item {
        padding: 10px 8px;
        font-size: 14px;
    }
}

@media (max-width: 992px) {
    .container {
        width: 95%;
        max-width: 900px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .news-slider {
        min-height: 300px;
    }
    
    .slider-container {
        min-height: 300px;
    }
    
    .about-text {
        padding: 14px 16px;
    }
    
    .about-text p {
        font-size: 14px;
        line-height: 1.6;
    }
    
    .about-description p {
        font-size: 16px;
        padding: 30px;
    }
    .about-main-title { font-size: 24px; }
    .about-english-title { font-size: 26px; }
    
    .about-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
        margin-top: 20px;
        padding-top: 20px;
    }
    
    .about-link-item {
        padding: 8px 6px;
        font-size: 13px;
        gap: 4px;
    }
    
    .about-link-item svg {
        width: 20px;
        height: 20px;
    }
    
    .advantages-grid {
        height: 240px;
    }
    
    .advantage-icon {
        width: 48px;
        height: 48px;
    }
    
    .advantage-title {
        font-size: 17px;
    }
    
    .nav-list {
        display: flex;
        flex-direction: column;
        padding: 0;
        margin: 0;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid #eee;
    }
    
    .nav-link {
        padding: 15px 20px;
        color: #333;
        justify-content: space-between;
        display: flex;
        align-items: center;
        font-size: 20px;
    }
    
    .nav-link:hover {
        background: #f5f5f5;
        color: #003c96;
    }
    
    .dropdown-menu {
        position: static;
        min-width: 100%;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: #f8f8f8;
        padding: 0;
        display: none;
        grid-template-columns: 1fr;
    }
    
    .has-dropdown.active .dropdown-menu {
        display: grid;
    }
    
    .dropdown-menu li {
        border-bottom: 1px solid #eee;
    }
    
    .dropdown-menu a {
        padding: 12px 20px 12px 40px;
        font-size: 15px;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: #fff;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        overflow-y: auto;
        padding: 60px 0 20px 0;
        z-index: 1000;
        display: block;
    }
    
    .nav.active {
        right: 0;
    }
    
    .banner-content {
        padding: 0 20px 0 60px;
    }
    
    .banner-content h1 {
        font-size: 36px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .banner-content h1 {
        font-size: 36px;
    }
    
    .news-tab {
        padding: 8px 14px;
        font-size: 13px;
        margin-right: 6px;
    }
    
    .clients-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

@media (max-width: 768px) {
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 15px;
    }
    
    .header-top {
        padding: 10px 0;
    }
    
    .header-nav {
        padding: 8px 0;
    }
    
    .nav-list.active {
        top: 120px;
        left: auto;
        right: 0;
        width: 220px;
        max-height: 80vh;
        border-radius: 4px 0 0 4px;
    }
    
    .logo img {
        height: 30px;
    }
    
    .banner-content {
        padding: 0 20px;
        text-align: center;
    }
    
    .banner-content h1 {
        font-size: 28px;
    }
    
    .banner-content p {
        font-size: 14px;
    }
    
    .banner-btn {
        padding: 10px 24px;
        font-size: 13px;
    }
    
    .banner-btn-prev,
    .banner-btn-next {
        width: 36px;
        height: 36px;
    }
    
    .banner-dots {
        bottom: 20px;
        gap: 8px;
    }
    
    .banner-dot {
        width: 10px;
        height: 10px;
    }
    
    .banner-dot.active {
        width: 24px;
    }
    
    .section {
        padding: 40px 0;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .section-header h2 {
        font-size: 24px;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .advantages-grid {
        width: 100%;
        height: 220px;
        display: flex;
        flex-direction: row;
    }
    
    .advantage-icon {
        width: 40px;
        height: 40px;
    }
    
    .advantage-title {
        font-size: 15px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        width: 100%;
        padding: 0;
    }
    
    .about-column,
    .news-column {
        width: 100%;
        max-width: 100%;
        overflow-x: hidden;
    }
    
    .about-text {
        padding: 16px;
    }
    
    .about-links {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .about-column-content {
        padding: 16px;
    }
    
    .about-column h2 {
        font-size: 20px;
    }
    
    .about-text p {
        font-size: 13px;
        word-break: break-word;
    }
    
    .about-description p {
        font-size: 15px;
        padding: 20px;
        line-height: 1.7;
    }
    .about-title-container { flex-direction: column; align-items: flex-start; gap: 5px; }
    .about-main-title { font-size: 20px; padding-left: 12px; border-left-width: 3px; }
    .about-english-title { font-size: 20px; letter-spacing: 2px; }
    
    .news-tabs {
        gap: 4px;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .news-tab {
        padding: 6px 12px;
        font-size: 12px;
        margin-right: 4px;
        white-space: nowrap;
    }
    
    .news-column {
        padding: 15px;
        width: 100%;
        box-sizing: border-box;
    }
    
    .news-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .news-item h4 {
        order: 1;
        margin-right: 0;
        font-size: 13px;
        line-height: 1.5;
        word-break: break-word;
        width: 100%;
    }
    
    .news-item .news-date {
        order: 2;
        margin-left: 0;
        font-size: 11px;
    }
    
    .news-item::after {
        display: none;
    }
    
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
    
    .client-item {
        padding: 0;
    }
    
    .client-item img {
        width: 150px;
        height: 60px;
        object-fit: cover;
    }
    
    .footer {
        padding: 40px 0 20px;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 30px;
        margin-bottom: 30px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .footer-column h4 {
        font-size: 14px;
        margin-bottom: 16px;
    }
    
    .footer-info p {
        font-size: 12px;
        line-height: 1.6;
    }
    
    .footer-column li {
        margin-bottom: 8px;
    }
    
    .footer-column a,
    .footer-column li:not(a) {
        font-size: 12px;
    }
    
    .footer-bottom p {
        font-size: 11px;
    }
}

@media (max-width: 576px) {
    .container {
        width: 100%;
        max-width: 100%;
        padding: 0 12px;
    }
    
    .about-text {
        padding: 12px;
    }
    
    .about-column p {
        font-size: 12px;
        line-height: 1.5;
        margin-bottom: 12px;
    }
    
    .about-description p {
        font-size: 14px;
        padding: 15px;
        line-height: 1.6;
    }
    .about-main-title { font-size: 18px; }
    .about-english-title { font-size: 16px; letter-spacing: 1px; }
    
    .about-links {
        grid-template-columns: 1fr;
        gap: 6px;
        margin-top: 16px;
        padding-top: 16px;
    }
    
    .about-link-item {
        padding: 8px 10px;
        font-size: 12px;
        gap: 4px;
    }
    
    .about-link-item svg {
        width: 18px;
        height: 18px;
    }
    
    .banner-content h1 {
        font-size: 20px;
        margin-bottom: 10px;
    }
    
    .banner-content p {
        font-size: 12px;
        margin-bottom: 20px;
    }
    
    .banner-btn {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .banner-controls {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .banner-dots {
        bottom: 15px;
        gap: 6px;
    }
    
    .banner-dot {
        width: 8px;
        height: 8px;
    }
    
    .banner-dot.active {
        width: 20px;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .section-header h2 {
        font-size: 20px;
    }
    
    .language-switcher {
        margin: 0 16px;
        padding: 3px;
    }
    
    .language-btn {
        padding: 4px 10px;
        font-size: 11px;
    }
    
    .about-column h2 {
        font-size: 18px;
    }
    
    .about-image img {
        height: auto;
        width: 100%;
    }
    
    .project-image {
        height: 140px;
    }
    
    .clients-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    
    .client-item {
        padding: 0;
    }
    
    .client-item img {
        width: 100%;
        height: 60px;
        object-fit: contain;
    }
    
    .stock-info {
        flex-direction: column;
        text-align: center;
    }
    
    .stock-code {
        margin-bottom: 20px;
    }
    
    .award-info {
        margin-left: 0;
    }
    
    .honors-container {
        gap: 15px;
    }
    
    .honor-item {
        min-width: 100%;
        max-width: 100%;
    }
    
    .honor-content {
        padding: 12px 10px;
    }
    
    .honor-text {
        font-size: 12px;
    }
    
    /* 手机端：2×2 网格，退出手风琴（移动端无 hover） */
    .advantages-section {
        margin: 30px 0;
    }
    
    .advantages-left {
        padding: 24px 16px;
    }
    
    .advantages-english {
        font-size: 14px;
        letter-spacing: 2px;
    }
    
    .advantages-title {
        font-size: 22px;
        margin-bottom: 12px;
    }
    
    .advantages-desc {
        font-size: 12px;
        line-height: 1.6;
        margin-bottom: 16px;
    }
    
    .advantages-btn {
        font-size: 12px;
        padding: 8px 20px;
    }
    
    .advantages-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 0;
        height: auto;
    }
    
    .advantages-grid .advantage-card,
    .advantages-grid:hover .advantage-card,
    .advantages-grid .advantage-card:hover {
        flex: none;
        height: 140px;
        transition: none;
    }
    
    .advantage-card:hover .advantage-overlay {
        opacity: 1;
    }
    
    /* 移动端关闭图标呼吸动画，省电省性能 */
    .advantage-icon {
        width: 36px;
        height: 36px;
        animation: none;
        border-width: 1.5px;
    }
    
    .advantage-card:hover .advantage-icon {
        transform: translate(-50%, -65%) scale(1);
        box-shadow: none;
    }
    
    .advantage-title {
        font-size: 13px;
        bottom: 16px;
    }
    
    .news-grid {
        padding: 0;
    }
    
    .news-tabs {
        flex-wrap: nowrap;
    }
    
    .news-item {
        padding: 8px 0;
    }
    
    .news-item h4 {
        font-size: 12px;
    }
    
    .about-column p {
        font-size: 12px;
    }
}

/* 子页面样式 */
.subpage-banner {
    position: relative;
    background: url('../images/news_bg.jpg') center/cover no-repeat;
    height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    overflow: hidden;
}

.subpage-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 60, 150, 0.7);
    z-index: 1;
}

/* 视频背景样式 */
.subpage-banner-video {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    z-index: 0;
    object-fit: cover;
}

.subpage-banner-content {
    position: relative;
    z-index: 2;
    padding-top: 120px;
}

.subpage-banner-content h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.subpage-banner-content p {
    font-size: 18px;
    opacity: 0.9;
}

/* 关于页面样式 */
.about-section {
    padding: 10px 0;
}

.about-content {
    display: flex;
    gap: 40px;
    margin-bottom: 60px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--primary-color);
}

.about-text p {
    margin-bottom: 16px;
    line-height: 1.6;
}

.company-info {
    margin-bottom: 40px;
}

.company-info h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--primary-color);
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.value-item {
    background: var(--bg-light);
    padding: 24px;
    border-radius: 8px;
    text-align: center;
}

.value-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    margin-bottom: 32px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -40px;
    top: 8px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--primary-color);
}

.timeline-date {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.timeline-content h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

/* 新闻页面样式 */
.news-section {
    padding: 60px 0;
}

.news-filter {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 20px;
}

.news-search {
    display: flex;
    gap: 10px;
}

.search-input {
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    width: 200px;
}

.search-btn {
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

.search-btn:hover {
    background: var(--primary-light);
}

.news-item {
    display: flex;
    gap: 20px;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

.news-date {
    width: 100px;
    flex-shrink: 0;
    font-weight: 600;
    color: var(--primary-color);
}

.news-info h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.news-info h3 a {
    color: var(--text-dark);
    text-decoration: none;
}

.news-info h3 a:hover {
    color: var(--primary-color);
}

.news-info p {
    color: var(--text-muted);
    line-height: 1.5;
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}

.pagination ul.pagination {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 8px;
}

.pagination ul.pagination li {
    margin: 0;
}

.pagination ul.pagination li a,
.pagination ul.pagination li span {
    display: block;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.pagination ul.pagination li a:hover {
    background: var(--bg-light);
}

.pagination ul.pagination li.active span {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination ul.pagination li.disabled span {
    color: var(--text-muted);
    pointer-events: none;
    background: white;
}

.pagination ul.pagination li a {
    color: var(--text-dark);
}

.pagination ul.pagination li a:hover {
    border-color: var(--primary-color);
}

/* 新闻详情页面样式 */
.news-detail-section {
    padding: 60px 0;
}

.news-detail-header {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.news-detail-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
    text-align: center;
}

.news-meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    color: var(--text-muted);
    font-size: 14px;
    flex-wrap: wrap;
}

.news-meta .news-date,
.news-meta .news-source,
.news-meta .news-views {
    white-space: nowrap;
    color: var(--text-muted);
}

.news-detail-content {
    margin-bottom: 40px;
}

.news-image {
    margin-bottom: 24px;
}

.news-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.news-detail-content p {
    margin-bottom: 16px;
    line-height: 1.6;
}

.news-attachments {
    margin-top: 32px;
    padding: 20px;
    background: var(--bg-light);
    border-radius: 8px;
}

.news-attachments h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-attachments ul {
    list-style: disc;
    padding-left: 20px;
}

.news-attachments li {
    margin-bottom: 8px;
}

.news-attachments a {
    color: var(--primary-color);
    text-decoration: none;
}

.news-attachments a:hover {
    text-decoration: underline;
}

.news-related {
    margin-bottom: 32px;
}

.news-related h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
}

.news-related ul {
    list-style: disc;
    padding-left: 20px;
}

.news-related li {
    margin-bottom: 8px;
}

.news-related a {
    color: var(--text-dark);
    text-decoration: none;
}

.news-related a:hover {
    color: var(--primary-color);
}

.news-share {
    margin-bottom: 32px;
}

.news-share h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
}

.share-buttons {
    display: flex;
    gap: 12px;
}

.share-btn {
    padding: 6px 12px;
    background: var(--bg-light);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
}

.share-btn:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.news-navigation {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.nav-prev,
.nav-next,
.nav-back {
    flex: 1;
}

.nav-next {
    text-align: right;
}

.nav-back {
    text-align: center;
}

.back-link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    padding: 6px 12px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: var(--transition-normal);
}

.back-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    text-decoration: none;
}

.nav-btn {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
}

.nav-btn:hover {
    color: var(--primary-color);
}

.prev-link,
.next-link {
    color: var(--text-dark);
    text-decoration: none;
    font-size: 14px;
    display: inline-block;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.prev-link:hover,
.next-link:hover {
    color: var(--primary-color);
    text-decoration: none;
}

.no-more {
    color: var(--text-light);
    font-size: 14px;
}

/* 响应式样式 */
@media (max-width: 992px) {
    .about-wrapper {
        padding: 0 20px;
    }
    
    .about-bg-text {
        font-size: 32px;
        letter-spacing: 3px;
    }
    
    .about-header-text h2 {
        font-size: 36px;
    }
    
    .about-nav-links {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .about-content {
        flex-direction: column;
        gap: 24px;
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-item {
        flex-direction: row;
        gap: 0;
    }
    
    .news-item h4 {
        margin-right: 8px;
    }
}

@media (max-width: 768px) {
    .subpage-banner {
        height: 200px;
    }
    
    .subpage-banner-content h1 {
        font-size: 24px;
    }
    
    .subpage-banner-content p {
        font-size: 14px;
    }
    
    .about-section,
    .news-section,
    .news-detail-section {
        padding: 40px 0;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .news-filter {
        flex-direction: column;
        align-items: stretch;
    }
    
    .news-navigation {
        flex-direction: column;
        gap: 12px;
    }
}

@media (max-width: 576px) {
    .subpage-banner {
        height: 180px;
    }
    
    .subpage-banner-content h1 {
        font-size: 20px;
    }
    
    .about-text h2,
    .company-info h2 {
        font-size: 20px;
    }
    
    .news-detail-header h1 {
        font-size: 24px;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 4px;
    }
}

/* 左侧栏目布局样式 */
.left-about-layout {
    display: flex;
    flex-direction: column;
    gap: 30px;
    align-items: flex-start;
}

.about-sidebar {
    width: 100%;
}

.about-sidebar .left-tabs {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 8px;
    border: none;
    border-radius: 8px;
    overflow: visible;
    box-shadow: none;
    background: transparent;
    padding-bottom: 20px;
    border-bottom: 2px solid #e2e8f0;
    min-width: max-content;
}

.about-sidebar .left-tabs a {
    padding: 12px 28px;
    background: #f8fafc;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #e2e8f0;
    border-radius: 6px 6px 0 0;
    text-align: center;
    position: relative;
    font-weight: 500;
    font-size: 15px;
    margin-bottom: -2px;
    white-space: nowrap;
    overflow: visible;
}

.about-sidebar .left-tabs a:last-child {
    border-bottom: 1px solid #e2e8f0;
}

.about-sidebar .left-tabs a:hover {
    background: #e2e8f0;
    color: var(--primary-color);
    box-shadow: none;
}

.about-sidebar .left-tabs a.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 -2px 0 0 var(--accent-color);
    font-weight: 600;
    border-bottom: 2px solid white;
}



.about-sidebar .left-tabs a::before {
    display: none;
}

.about-sidebar .left-tabs a:hover::before {
    display: none;
}

.about-sidebar .left-tabs a.active::before {
    display: none;
}

.about-content {
    width: 100%;
}

.tabs-scroll-container {
    display: flex;
    align-items: center;
    gap: 8px;
    position: relative;
    padding: 0 2px;
}

.tabs-scroll-wrapper {
    flex: 1;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 4px 0;
    scroll-padding-right: 10px;
}

.tabs-scroll-wrapper::-webkit-scrollbar {
    display: none;
}

.tabs-scroll-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: white;
    border: 1px solid #e2e8f0;
    border-radius: 50%;
    color: #64748b;
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.tabs-scroll-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tabs-scroll-btn svg {
    width: 16px;
    height: 16px;
}

/* 关于页面选项卡样式 */
.about-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 32px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    flex-wrap: wrap;
}

.about-tabs a {
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px 4px 0 0;
    background: white;
    font-size: 20px;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    border-bottom: none;
}

.about-tabs a:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.about-tabs a.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.tab-content{
    line-height: 1.8;
}
.tab-content p{
    margin: 0 0 1em 0;
    padding: 0;
    line-height: 1.75;
    font-size: 18px;
    color: #333;
    word-break: break-all;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 领导致辞样式 */
.leader-content {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.leader-image {
    flex: 0 0 200px;
}

.leader-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.leader-text {
    flex: 1;
}

.leader-signature {
    margin-top: 24px;
    font-style: italic;
    text-align: right;
}

/* 组织机构样式 */
.organization-chart {
    margin-top: 24px;
}

.org-level {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
    position: relative;
}

.org-level:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 10px;
    background: var(--primary-color);
}

.org-item {
    padding: 12px 24px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-align: center;
    min-width: 120px;
}

.org-top .org-item {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.org-second .org-item {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-light);
}

/* 管理团队样式 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 24px;
}

.team-member {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.team-member:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.team-image {
    height: 200px;
    overflow: hidden;
}

.team-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.team-info h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-dark);
}

.team-info p {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 4px;
}

/* 响应式样式 */
@media (max-width: 992px) {
    .left-about-layout {
        flex-direction: column;
        gap: 24px;
    }
    
    .about-sidebar {
        width: 100%;
    }
    
    .about-sidebar .left-tabs {
        flex-direction: row;
        flex-wrap: nowrap;
        border: none;
        gap: 8px;
        box-shadow: none;
        min-width: max-content;
    }
    
    .about-sidebar .left-tabs a {
        border: 1px solid var(--border-color);
        border-radius: 20px;
        border-bottom: 1px solid var(--border-color);
        padding: 10px 20px;
        position: relative;
        font-size: 13px;
        white-space: nowrap;
    }
    
    .about-sidebar .left-tabs a:hover {
        background: linear-gradient(135deg, rgba(0, 60, 150, 0.05), rgba(0, 60, 150, 0.1));
        color: var(--primary-color);
        box-shadow: 0 2px 8px rgba(0, 60, 150, 0.2);
    }
    
    .about-sidebar .left-tabs a.active {
        background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
        color: white;
        border-color: var(--primary-color);
        box-shadow: 0 2px 12px rgba(0, 60, 150, 0.4);
    }
    
    .about-sidebar .left-tabs a::before {
        display: none;
    }
    
    .about-sidebar .left-tabs a.active::after {
        display: none;
    }
    
    .tabs-scroll-btn {
        display: flex !important;
    }
    
    .leader-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    
    .leader-image {
        flex: none;
        width: 150px;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .org-level {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .about-tabs {
        flex-direction: column;
    }
    
    .about-tab {
        border-radius: 4px;
        border-bottom: 1px solid var(--border-color);
    }
    
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .org-level {
        flex-direction: column;
        align-items: center;
    }
    
    .org-level:not(:last-child)::after {
        left: 50%;
        bottom: -10px;
        width: 10px;
        height: 2px;
    }
}

/* 工程案例页面样式 */
.projects-section {
    padding: 60px 0;
}

.projects-filter {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 20px;
}

.projects-tabs {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
    margin-bottom: 16px;
    width: 100%;
}

.projects-tabs a {
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: 4px 4px 0 0;
    background: white;
    font-size: 20px;
    color: var(--text-dark);
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    border-bottom: none;
}

.projects-tabs a:hover {
    background: var(--bg-light);
}

.projects-tabs a.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.projects-search {
    display: flex;
    gap: 10px;
}

.projects-grid {
    column-count: 4;
    column-gap: 24px;
    margin-bottom: 40px;
    width: 100%;
}

.project-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
    break-inside: avoid;
    margin-bottom: 24px;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.project-image {
    position: relative;
    overflow: hidden;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image img {
    transition: transform 0.5s ease;
}

.project-image img.landscape {
    width: 100%;
    height: auto;
    object-fit: cover;
    max-height: 100%;
}

.project-image img.portrait {
    width: auto;
    height: 100%;
    object-fit: cover;
    margin: 0 auto;
    max-width: 100%;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-name {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 16px;
    text-align: center;
    font-weight: 600;
    color: white;
    background: rgba(0, 0, 0, 0.5);
    transition: all 0.3s ease;
}

.project-card:hover .project-name {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-color);
}

/* 模糊框样式 */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    background: white;
    border: none;
    border-radius: 50%;
    font-size: 24px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-dark);
    transition: background 0.3s ease;
}

.lightbox-close:hover {
    background: var(--bg-light);
}

.lightbox-content img {
    max-width: 100%;
    max-height: 80vh;
    display: block;
    border-radius: 8px;
}

.lightbox-caption {
    color: white;
    text-align: center;
    padding: 16px 0;
    font-size: 16px;
}

/* 一级栏目横向导航样式 */
.primary-nav-section {
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    padding: 0;
}

.primary-nav {
    display: flex;
    justify-content: flex-start;
    gap: 0;
    background: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.primary-nav-item {
    padding: 16px 32px;
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    font-size: 18px;
    transition: all 0.3s ease;
    border-right: 1px solid var(--border-color);
    position: relative;
    text-align: center;
}

.primary-nav-item:last-child {
    border-right: none;
}

.primary-nav-item:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.primary-nav-item.active {
    background: var(--primary-color);
    color: white;
    box-shadow: inset 0 -3px 0 var(--accent-color);
}

/* 二级栏目左侧布局样式 */
.sub-about-section {
    padding: 60px 0;
}

.sub-about-layout {
    display: flex;
    gap: 40px;
    align-items: flex-start;
}

.secondary-sidebar {
    width: 270px;
    flex-shrink: 0;
}

.secondary-tabs {
    display: flex;
    flex-direction: column;
    gap: 2px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--bg-white);
}

.secondary-tabs a {
    padding: 16px 24px;
    background: white;
    color: var(--text-dark);
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
    text-align: left;
    position: relative;
    font-weight: 500;
    font-size: 14px;
}

.secondary-tabs a:last-child {
    border-bottom: none;
}

.secondary-tabs a:hover {
    background: linear-gradient(135deg, rgba(0, 60, 150, 0.05), rgba(0, 60, 150, 0.1));
    color: var(--primary-color);
    padding-left: 28px;
    box-shadow: inset 4px 0 0 var(--primary-color);
}

.secondary-tabs a.active {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
    color: white;
    border-color: var(--primary-color);
    padding-left: 28px;
    box-shadow: inset 4px 0 0 var(--accent-color);
    font-weight: 600;
}

.secondary-tabs a::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all 0.3s ease;
}

.secondary-tabs a:hover::before {
    background: var(--primary-color);
    transform: translateY(-50%) scale(1.2);
    box-shadow: 0 0 8px rgba(0, 60, 150, 0.4);
}

.secondary-tabs a.active::before {
    background: var(--accent-color);
    transform: translateY(-50%) scale(1.2);
    box-shadow: 0 0 8px rgba(254, 216, 6, 0.6);
}

.sub-about-content {
    flex: 1;
    font-size: 18px;
}

.sub-about-content-inner {
    background: var(--bg-white);
    border-radius: 8px;
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
}

.sub-about-content-inner h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--primary-color);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.sub-about-content-inner p {
    margin-bottom: 16px;
    line-height: 1.6;
    color: var(--text-dark);
}

/* 工程案例详情页面样式 */
.project-detail-section {
    padding: 60px 0;
}

.project-detail-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--border-color);
}

.project-detail-header h1 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.project-meta {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    color: var(--text-muted);
    font-size: 14px;
}

.project-meta-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.project-gallery {
    margin-bottom: 40px;
}

.gallery-main {
    margin-bottom: 20px;
}

.gallery-main img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.gallery-thumb {
    position: relative;
    height: 100px;
    border-radius: 4px;
    overflow: hidden;
    cursor: pointer;
}

.gallery-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.3s ease;
}

.gallery-thumb:hover img {
    opacity: 0.8;
}

.gallery-thumb.active {
    border: 2px solid var(--primary-color);
}

.project-content {
    margin-bottom: 40px;
}

.project-content h2 {
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.project-content h3 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-dark);
}

.project-content p {
    margin-bottom: 16px;
    line-height: 1.6;
}

.project-content ul {
    margin-bottom: 16px;
    padding-left: 20px;
}

.project-content li {
    margin-bottom: 8px;
}

.project-specs {
    background: var(--bg-light);
    padding: 24px;
    border-radius: 8px;
    margin-bottom: 40px;
}

.project-specs h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary-color);
}

.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.spec-item {
    display: flex;
    justify-content: space-between;
}

.spec-label {
    font-weight: 500;
    color: var(--text-dark);
}

.spec-value {
    color: var(--text-muted);
}

.project-related {
    margin-bottom: 40px;
}

.project-related h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-dark);
}

.related-projects {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.related-project {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.related-project:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.related-project-image {
    height: 150px;
    overflow: hidden;
}

.related-project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-project-info {
    padding: 12px;
}

.related-project-info h4 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-dark);
}

.related-project-info p {
    font-size: 12px;
    color: var(--text-muted);
    margin: 0;
}

/* 响应式样式 */
@media (max-width: 1200px) {
    .projects-grid {
        column-count: 3;
    }
}

@media (max-width: 992px) {
    .projects-grid {
        column-count: 2;
    }
    
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .related-projects {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .projects-section,
    .project-detail-section {
        padding: 40px 0;
    }
    
    .projects-filter {
        flex-direction: column;
        align-items: stretch;
    }
    
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
    
    .project-image {
        height: 150px;
    }
    
    .gallery-thumbs {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .gallery-thumb {
        height: 80px;
    }
    
    .related-projects {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 992px) {
    .primary-nav {
        flex-wrap: wrap;
        justify-content: flex-start;
    }
    
    .primary-nav-item {
        flex: 0 1 auto;
        min-width: 100px;
        max-width: 200px;
        text-align: center;
        padding: 14px 20px;
    }
    
    .sub-about-layout {
        flex-direction: column;
        gap: 24px;
    }
    
    .secondary-sidebar {
        width: 100%;
    }
    
    .secondary-tabs {
        flex-direction: row;
        flex-wrap: wrap;
        border: none;
        gap: 8px;
        box-shadow: none;
    }
    
    .secondary-tabs a {
        border: 1px solid var(--border-color);
        border-radius: 20px;
        border-bottom: 1px solid var(--border-color);
        padding: 10px 20px;
        position: relative;
        font-size: 13px;
    }
    
    .secondary-tabs a:hover {
        background: linear-gradient(135deg, rgba(0, 60, 150, 0.05), rgba(0, 60, 150, 0.1));
        color: var(--primary-color);
        padding-left: 20px;
        box-shadow: 0 2px 8px rgba(0, 60, 150, 0.2);
    }
    
    .secondary-tabs a.active {
        background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
        color: white;
        border-color: var(--primary-color);
        padding-left: 20px;
        box-shadow: 0 2px 12px rgba(0, 60, 150, 0.4);
    }
    
    .secondary-tabs a::before {
        display: none;
    }
}

@media (max-width: 576px) {
    .projects-grid {
        column-count: 1;
    }
    
    .project-meta {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    
    .gallery-thumbs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .primary-nav {
        justify-content: flex-start;
    }
    
    .primary-nav-item {
        flex: 0 1 50%;
        min-width: unset;
        max-width: unset;
        padding: 12px 16px;
        font-size: 13px;
        border-right: 1px solid var(--border-color);
        border-bottom: 1px solid var(--border-color);
    }
    
    .primary-nav-item:nth-child(2n) {
        border-right: none;
    }
    
    .primary-nav-item:nth-last-child(-n+2) {
        border-bottom: none;
    }
    
    .sub-about-content-inner {
        padding: 16px;
    }
    
    .sub-about-content-inner h2 {
        font-size: 18px;
    }
}

/* ===== 工程业绩 3D翻转卡片 + 光影扫过 ===== */

/* 工程业绩区域需要相对定位，供光影层参照 */
.projects-section > .container {
    position: relative;
    overflow: hidden;
}

/* 光影扫过动画层 */
.projects-light-sweep {
    position: absolute;
    top: 0;
    left: -80%;
    width: 60%;
    height: 100%;
    background: linear-gradient(
        105deg,
        transparent 0%,
        transparent 35%,
        rgba(255, 255, 255, 0.35) 45%,
        rgba(255, 255, 255, 0.55) 50%,
        rgba(255, 255, 255, 0.35) 55%,
        transparent 65%,
        transparent 100%
    );
    pointer-events: none;
    z-index: 2;
    animation: lightSweep 4s ease-in-out infinite;
    animation-delay: 1.5s;
}

@keyframes lightSweep {
    0%   { left: -80%;  opacity: 0; }
    15%  { opacity: 1; }
    85%  { opacity: 1; }
    100% { left: 120%; opacity: 0; }
}

/* 3D 卡片网格：3列 */
.projects-grid-3d {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
    width: 100%;
    position: relative;
    perspective: 1200px;
}

/* 单张卡片容器 */
.project-flip-card {
    aspect-ratio: 4 / 3;
    border-radius: 12px;
    overflow: hidden;
    box-shadow:
        0 4px 16px rgba(0, 40, 100, 0.08),
        0 1px 4px rgba(0, 40, 100, 0.04);
    transition:
        transform 0.45s cubic-bezier(0.4, 0, 0.2, 1),
        box-shadow 0.45s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    background: white;
}

.project-flip-card:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow:
        0 18px 48px rgba(0, 60, 150, 0.18),
        0 6px 16px rgba(0, 60, 150, 0.10);
}

/* 翻转内层 */
.project-flip-inner {
    display: block;
    text-decoration: none;
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-flip-card:hover .project-flip-inner {
    transform: rotateY(180deg);
}

/* 正面 / 背面公共 */
.project-flip-front,
.project-flip-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    border-radius: 12px;
    overflow: hidden;
}

/* 正面 */
.project-flip-front {
    background: #f0f2f5;
}

.project-flip-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.project-flip-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-flip-card:hover .project-flip-image img {
    transform: scale(1.08);
}

/* 正面标题浮层 */
.project-flip-front-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 14px 16px;
    background: linear-gradient(transparent, rgba(0, 30, 80, 0.82));
    z-index: 2;
}

.project-flip-front-title h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    color: #fff;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 正面底部装饰线 */
.project-flip-accent {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, #1e4d8c, #f5a623, #1e4d8c);
    background-size: 200% 100%;
    animation: accentFlow 3s linear infinite;
    z-index: 3;
}

@keyframes accentFlow {
    0%   { background-position: 0% 0; }
    100% { background-position: 200% 0; }
}

/* 背面 */
.project-flip-back {
    background: linear-gradient(145deg, #0a1a3a 0%, #0d2476 50%, #1e4d8c 100%);
    transform: rotateY(180deg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 20px;
    color: #fff;
}

.project-flip-back-inner {
    text-align: center;
    width: 100%;
}

.project-flip-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
    border: 1.5px solid rgba(255, 255, 255, 0.3);
    margin: 0 auto 16px;
    color: #f5a623;
    transition: all 0.4s ease;
}

.project-flip-card:hover .project-flip-icon {
    background: rgba(245, 166, 35, 0.18);
    border-color: #f5a623;
    transform: scale(1.1);
}

.project-flip-back-title {
    font-size: 17px;
    font-weight: 700;
    margin: 0 0 12px 0;
    color: #fff;
    line-height: 1.4;
}

.project-flip-divider {
    width: 40px;
    height: 2px;
    background: rgba(255, 255, 255, 0.35);
    margin: 0 auto 14px;
    border-radius: 1px;
}

.project-flip-desc {
    font-size: 13px;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.78);
    margin: 0 0 18px 0;
}

.project-flip-btn {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: #f5a623;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.project-flip-card:hover .project-flip-btn {
    letter-spacing: 1.5px;
}

/* 查看更多按钮 */
.projects-more-wrap {
    text-align: center;
    margin-top: 40px;
}

.projects-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 13px 36px;
    background: linear-gradient(135deg, #1e4d8c 0%, #0d2476 100%);
    color: #fff;
    font-size: 15px;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 16px rgba(0, 60, 150, 0.18);
    position: relative;
    overflow: hidden;
}

.projects-more-btn::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.18),
        transparent
    );
    transition: left 0.55s ease;
}

.projects-more-btn:hover::after {
    left: 100%;
}

.projects-more-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(0, 60, 150, 0.28);
    background: linear-gradient(135deg, #f5a623 0%, #e8940a 100%);
    color: #fff;
}

/* 进入视口时的入场动画 */
@keyframes flipCardIn {
    0% {
        opacity: 0;
        transform: translateY(40px) rotateX(8deg);
    }
    100% {
        opacity: 1;
        transform: translateY(0) rotateX(0);
    }
}

.project-flip-card {
    animation: flipCardIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.project-flip-card:nth-child(1) { animation-delay: 0.05s; }
.project-flip-card:nth-child(2) { animation-delay: 0.12s; }
.project-flip-card:nth-child(3) { animation-delay: 0.19s; }
.project-flip-card:nth-child(4) { animation-delay: 0.26s; }
.project-flip-card:nth-child(5) { animation-delay: 0.33s; }
.project-flip-card:nth-child(6) { animation-delay: 0.40s; }
.project-flip-card:nth-child(7) { animation-delay: 0.47s; }
.project-flip-card:nth-child(8) { animation-delay: 0.54s; }
.project-flip-card:nth-child(9) { animation-delay: 0.61s; }

/* ===== 响应式 ===== */
@media (max-width: 1200px) {
    .projects-grid-3d {
        gap: 22px;
    }
    .project-flip-front-title h3 {
        font-size: 15px;
    }
    .project-flip-back-title {
        font-size: 15px;
    }
}

@media (max-width: 992px) {
    .projects-grid-3d {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    .project-flip-card {
        aspect-ratio: 16 / 11;
    }
    .project-flip-back {
        padding: 18px 14px;
    }
    .project-flip-icon {
        width: 44px;
        height: 44px;
        margin-bottom: 10px;
    }
    .project-flip-icon svg {
        width: 22px;
        height: 22px;
    }
    .project-flip-back-title {
        font-size: 14px;
    }
    .project-flip-desc {
        font-size: 12px;
    }
}

@media (max-width: 576px) {
    .projects-grid-3d {
        grid-template-columns: repeat(2, 1fr);
        gap: 14px;
    }
    .project-flip-card {
        aspect-ratio: 4 / 3;
        border-radius: 8px;
    }
    .project-flip-front-title {
        padding: 10px 12px;
    }
    .project-flip-front-title h3 {
        font-size: 13px;
    }
    .project-flip-back {
        padding: 14px 10px;
        border-radius: 8px;
    }
    .project-flip-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 8px;
    }
    .project-flip-icon svg {
        width: 18px;
        height: 18px;
    }
    .project-flip-back-title {
        font-size: 12px;
        margin-bottom: 8px;
    }
    .project-flip-divider {
        margin-bottom: 8px;
    }
    .project-flip-desc {
        font-size: 11px;
        margin-bottom: 10px;
        line-height: 1.5;
    }
    .project-flip-btn {
        font-size: 11px;
    }
    .projects-more-btn {
        font-size: 13px;
        padding: 11px 28px;
    }
}

.header-top-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 28px;
    height: 22px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background: #003c96;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

.mobile-nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    pointer-events: none;
}

.mobile-nav-overlay.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

@media (max-width: 1200px) {
    .mobile-menu-toggle {
        display: flex !important;
        position: relative;
        z-index: 1002;
    }
    
    .mobile-menu-toggle.active span {
        background: #fff;
    }
    
    .header-nav {
        display: none;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: #fff;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: right 0.3s ease;
        overflow-y: auto;
        padding: 20px 0;
        z-index: 1001;
        display: block;
    }
    
    .nav.active {
        right: 0;
    }
    
    .mobile-nav-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0 20px 15px 20px;
        border-bottom: 1px solid #eee;
        margin-bottom: 10px;
    }
    
    .mobile-nav-close {
        width: 32px;
        height: 32px;
        display: flex;
        align-items: center;
        justify-content: center;
        background: #f5f5f5;
        border: none;
        border-radius: 50%;
        cursor: pointer;
        font-size: 20px;
        color: #333;
        transition: all 0.3s ease;
    }
    
    .mobile-nav-close:hover {
        background: #003c96;
        color: #fff;
    }
    
    .mobile-language-switcher {
        display: flex;
        gap: 8px;
    }
    
    .mobile-language-switcher .language-btn {
        padding: 6px 12px;
        font-size: 12px;
        border-radius: 4px;
        text-decoration: none;
        transition: all 0.3s ease;
    }
    
    .mobile-language-switcher .language-btn.active {
        background: #003c96;
        color: #fff;
    }
    
    .mobile-language-switcher .language-btn:not(.active) {
        background: #f5f5f5;
        color: #666;
    }
    
    .mobile-language-switcher .language-btn:not(.active):hover {
        background: #e0e0e0;
    }
    
    .nav-list {
        flex-direction: column;
        padding: 0;
        margin: 0;
    }
    
    .nav-item {
        width: 100%;
        border-bottom: 1px solid #eee;
    }
    
    .nav-link {
        padding: 15px 20px;
        color: #333;
        justify-content: space-between;
        display: flex;
        align-items: center;
        font-size: 16px;
    }
    
    .nav-link:hover {
        background: #f5f5f5;
        color: #003c96;
    }
    
    .dropdown-menu {
        position: static;
        min-width: 100%;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: #f8f8f8;
        padding: 0;
        display: none;
        grid-template-columns: 1fr;
    }
    
    .has-dropdown.active .dropdown-menu {
        display: grid;
    }
    
    .dropdown-menu li {
        border-bottom: 1px solid #eee;
    }
    
    .dropdown-menu a {
        padding: 12px 20px 12px 40px;
        font-size: 15px;
    }
    
    .language-switcher {
        display: none;
    }
    
    .header-top-right {
        display: flex;
        align-items: center;
        gap: 15px;
    }
    
    .has-dropdown:hover .dropdown-menu {
        opacity: 0;
        visibility: hidden;
        display: none;
    }
    
    .has-dropdown.active:hover .dropdown-menu {
        opacity: 1;
        visibility: visible;
        display: grid;
    }
}
/* ===================== 通用模块标题样式（类似公司简介标题） ===================== */
.module-title-container {
    width: 95%;
    max-width: 1600px;
    margin: 0 auto 10px auto;
    display: flex;
    align-items: center;
    gap: 15px;
    box-sizing: border-box;
    padding: 0 20px;
}

.module-main-title {
    font-size: 28px;
    font-weight: 700;
    color: #1e4d8c;
    margin: 0;
    padding-left: 15px;
    border-left: 4px solid #f5a623;
    display: inline-block;
    white-space: nowrap;
}

.module-english-title {
    font-size: 36px;
    font-weight: 800;
    color: rgba(30, 77, 140, 0.15);
    text-transform: uppercase;
    letter-spacing: 4px;
    white-space: nowrap;
}

/* ===================== 通用模块标题 响应式 ===================== */
@media (max-width: 768px) {
    .module-title-container {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
        width: 92%;
    }
    .module-main-title {
        font-size: 22px;
        padding-left: 12px;
        border-left-width: 3px;
    }
    .module-english-title {
        font-size: 22px;
        letter-spacing: 2px;
    }
}

@media (max-width: 480px) {
    .module-title-container {
        gap: 3px;
    }
    .module-main-title {
        font-size: 18px;
        padding-left: 10px;
    }
    .module-english-title {
        font-size: 18px;
        letter-spacing: 1px;
    }
}

/* 专业优势标题：英文放在中文下面（纵向排列）*/
.advantages-left .module-title-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 5px;
    width: 100%;
    max-width: 100%;
    margin: 0 0 10px 0;
    padding: 0;
}
/* ========== 页面Banner视频 ========== */
.subpage-banner {
    position: relative;
    height: 400px;
    overflow: hidden;
}
.subpage-banner-video {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 1960px;
    height: 150%;
    object-fit: cover;
    z-index: 1;
}
.subpage-banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    
    z-index: 2;
}
.subpage-banner-content {
    position: relative;
    z-index: 3;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
@media (max-width: 768px) {
    .subpage-banner { height: 300px; }
    .subpage-banner-video { display: none; }
}