/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 解决滚动条导致的页面抖动问题 */
html {
    overflow-y: scroll;
}

body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
    /* 确保页面宽度在滚动条显示和隐藏时保持一致 */
    margin-right: calc(100vw - 100%);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
header {
    background-color: transparent !important;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 10px 0;
    transition: all 0.3s ease;
}

nav ul li a {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s ease;
    /* 确保导航链接的宽度固定，避免 hover 时的布局变化 */
    display: inline-block;
    min-width: 80px;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

nav ul li a:hover {
    color: #e0e0e0;
}

nav ul li a.active {
    color: #fff;
    font-weight: bold;
    position: relative;
}

nav ul li a.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background-color: #fff;
    border-radius: 1px;
}

header.scrolled {
    background-color: rgba(255, 255, 255, 0.95) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header.scrolled nav ul li a {
    color: #333 !important;
    text-shadow: none !important;
}

header.scrolled nav ul li a:hover {
    color: #0066cc !important;
}

header.scrolled nav ul li a.active {
    color: #0066cc !important;
}

header.scrolled nav ul li a.active::after {
    background-color: #0066cc !important;
}

/* 语言切换按钮 */
.language-switch {
    margin-left: 25px;
}

.language-btn {
    text-decoration: none;
    color: #fff;
    font-weight: 500;
    transition: color 0.3s ease;
    /* 确保导航链接的宽度固定，避免 hover 时的布局变化 */
    display: inline-block;
    min-width: 80px;
    text-align: center;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
    border: 1px solid #fff;
    border-radius: 4px;
    padding: 4px 12px;
}

.language-btn:hover {
    color: #e0e0e0;
    background-color: rgba(255, 255, 255, 0.2);
}

header.scrolled .language-btn {
    color: #333 !important;
    text-shadow: none !important;
    border: 1px solid #333;
}

header.scrolled .language-btn:hover {
    color: #0066cc !important;
    background-color: rgba(0, 102, 204, 0.1);
    border: 1px solid #0066cc;
}

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

nav {
    display: flex;
    align-items: center;
}

.logo {
    width: auto;
    height: 60px;
    display: flex;
    align-items: center;
    gap: 2px;
}

.logo-title {
    font-size: 26px;
    font-weight: 600;
    color: #ffffff;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    line-height: 1;
    white-space: nowrap;
    transition: color 0.3s ease, text-shadow 0.3s ease;
}

header.scrolled .logo-title {
    color: #333;
    text-shadow: none;
}

.logo img {
    width: 200px;
    height: 100%;
    object-fit: contain;
    margin-right: -26px;
    display: block;
}

/* 导航菜单 */
nav {
    display: flex;
    align-items: center;
}

nav ul {
    display: flex;
    list-style: none;
}

nav ul li {
    margin-left: 25px;
}

/* 移动端导航菜单按钮 */
.menu-toggle {
    display: none;
    cursor: pointer;
    font-size: 24px;
    color: #fff;
}

header.scrolled .menu-toggle {
    color: #333;
}

/* 语言切换 */
.language-switch {
    display: flex;
    align-items: center;
}

.language-select {
    padding: 6px 10px;
    background-color: transparent;
    color: #fff;
    border: 1px solid #fff;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s ease;
}

header.scrolled .language-select {
    color: #333;
    border-color: #333;
}

.language-select option {
    background-color: #fff;
    color: #333;
}

/* 英雄区域 */
.hero {
    height: 400px;
    position: relative;
    overflow: hidden;
    margin-top: -10px;
    border-top-left-radius: 10px;
    border-top-right-radius: 10px;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background-size: cover;
    background-position: center;
}

/* 英雄区域内容 */
.hero-content {
    background-color: #fff;
    padding: 40px 0;
    text-align: center;
    height: 390px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 公共内容区域样式 */
.about-content,
.product-content,
.application-content,
.technology-content {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 30px;
    gap: 20px;
}

.about-text,
.product-text,
.application-text,
.technology-text {
    flex: 1;
    min-width: 300px;
    display: flex;
    align-items: center;
}

.about-image,
.product-image,
.application-image,
.technology-image {
    flex: 1;
    min-width: 300px;
}

.about-image img,
.product-image img,
.application-image img,
.technology-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.about-image img:hover,
.product-image img:hover,
.application-image img:hover,
.technology-image img:hover {
    transform: scale(1.02);
}

.hero-content .container {
    max-width: 800px;
}

.hero-content h2 {
    font-size: 32px;
    margin-bottom: 15px;
    font-weight: bold;
    color: #333;
}

.hero-content p {
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto 25px;
    color: #333;
}

.hero-text {
    font-size: 28px !important;
    font-weight: 500;
    line-height: 1.5;
    margin: 0 auto 30px !important;
    max-width: 980px !important;
    color: #333 !important;
    text-align: center;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: #000;
    color: #fff;
    padding: 12px 40px;
    text-decoration: none;
    border-radius: 18px;
    font-weight: bold;
    font-size: 30px;
    letter-spacing: 1px;
    line-height: 1;
    border: 3px solid #000;
    box-shadow: 5px 5px 0 #ef2a1a, 9px 9px 0 #f4df14;
    margin-top: 44px;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.cta-button::before {
    content: "";
    position: absolute;
    top: -32px;
    left: 50%;
    transform: translateX(-50%);
    width: 72px;
    height: 18px;
    background:
        radial-gradient(circle, #000 0 6px, transparent 6.5px) 0 50% / 24px 18px no-repeat,
        radial-gradient(circle, #ef2a1a 0 6px, transparent 6.5px) 24px 50% / 24px 18px no-repeat,
        radial-gradient(circle, #f4df14 0 6px, transparent 6.5px) 48px 50% / 24px 18px no-repeat;
    pointer-events: none;
}

.cta-button:hover {
    transform: translate(2px, 2px);
    box-shadow: 3px 3px 0 #ef2a1a, 6px 6px 0 #f4df14;
}

/* 服务区域 */
.services {
    padding: 60px 0;
    background-color: #f5f5f5;
}

.services h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    color: #0066cc;
    font-weight: bold;
}

.service-container {
    display: flex;
    width: 100%;
    overflow: visible;
    border-radius: 12px;
    box-shadow: none;
    background-color: #f5f5f5;
    gap: 22px;
    perspective: 1200px;
}

.service-card {
    flex: 1;
    min-width: 0;
    position: relative;
    overflow: hidden;
    background-color: #fff;
    background-image: var(--service-bg);
    background-size: cover;
    background-position: center;
    transition: flex 0.6s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.3s ease, transform 0.5s ease, box-shadow 0.4s ease;
    min-height: 360px;
    display: flex;
    flex-direction: column;
    border-radius: 28px 12px 12px 12px;
    border: 1px solid #f5f5f5;
    transform-origin: center bottom;
    transform: translateY(0);
    box-shadow: 0 10px 22px rgba(7, 25, 53, 0.22);
    clip-path: polygon(0 30px, 100% 0, 100% 100%, 0 100%);
}

.service-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(7, 18, 36, 0.86) 0%, rgba(8, 24, 48, 0.56) 42%, rgba(10, 30, 58, 0.18) 100%);
    opacity: 1;
    transition: opacity 0.45s ease;
    z-index: 1;
}

.service-card:last-child {
    border-right: none;
}

.service-card.active {
    flex: 2.7;
    background-image: none;
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(7, 25, 53, 0.16);
    clip-path: none;
    border-radius: 14px;
}

.service-card.active::before {
    opacity: 0;
}

.service-header {
    padding: 30px 24px 26px;
    text-align: center;
    background-color: transparent;
    border-bottom: none;
    z-index: 2;
    position: relative;
    margin-top: auto;
    transition: background-color 0.35s ease, border-color 0.35s ease;
}

.service-card.active .service-header {
    background-color: #fff;
    border-bottom: 1px solid #e3e8f3;
}

.service-header h4 {
    font-size: 22px;
    margin-bottom: 4px;
    color: #fff;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-shadow: 0 4px 14px rgba(0, 0, 0, 0.42);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.service-card.active .service-header h4 {
    font-size: 18px;
    color: #0066cc;
    text-shadow: none;
    letter-spacing: 0;
}

.service-desc {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.9);
    display: inline-block;
    max-width: 0;
    white-space: nowrap;
    opacity: 0;
    overflow: hidden;
    transform: translateY(6px);
    transition: max-width 0.45s ease, opacity 0.35s ease, transform 0.45s ease;
}

.service-card.active .service-desc {
    max-width: 240px;
    opacity: 1;
    transform: translateY(0);
    color: #72809b;
}

.service-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: calc(100% - 98px);
    display: flex;
    align-items: stretch;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transform: translateX(18px);
    transition: opacity 0.38s ease, transform 0.55s ease;
}

.service-info {
    width: 46%;
    min-width: 0;
    padding: 24px 24px 20px;
    background-color: #fff;
    z-index: 2;
    clip-path: inset(0 100% 0 0);
    opacity: 0;
    transition: clip-path 0.62s cubic-bezier(0.2, 0.65, 0.2, 1), opacity 0.38s ease;
}

.service-info h4 {
    font-size: 18px;
    margin-bottom: 15px;
    color: #0066cc;
    font-weight: bold;
}

.service-info ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-info ul li {
    font-size: 14px;
    padding: 6px 0;
    border-bottom: 1px solid #e6ecf8;
    display: flex;
    align-items: center;
}

.service-info ul li:before {
    content: "•";
    margin-right: 10px;
    font-weight: bold;
    color: #0066cc;
}

.service-image {
    flex: 1;
    position: relative;
    overflow: hidden;
    transform-origin: right center;
    transform: scaleX(0.28);
    transition: transform 0.64s cubic-bezier(0.25, 0.85, 0.2, 1);
}

.service-divider {
    width: 30px;
    flex-shrink: 0;
    background: linear-gradient(to right, rgba(255, 255, 255, 0.96) 0%, rgba(255, 255, 255, 0.7) 48%, rgba(255, 255, 255, 0.18) 100%);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    position: relative;
    z-index: 3;
    opacity: 0;
    transform: scaleX(0.4);
    transition: opacity 0.35s ease, transform 0.6s ease;
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.65s ease;
    transform: scale(1.14);
}

.service-card.active .service-content {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(0);
}

.service-card.active .service-info {
    clip-path: inset(0 0 0 0);
    opacity: 1;
}

.service-card.active .service-divider {
    opacity: 1;
    transform: scaleX(1);
}

.service-card.active .service-image {
    transform: scaleX(1);
}

.service-card.active .service-image img {
    transform: scale(1);
}

/* 核心数据区域 */
.core-data {
    padding: 60px 0;
    background-color: #f0f4f8;
}

.core-data h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    color: #0066cc;
    font-weight: bold;
}

.data-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
}

.data-item {
    background-color: #fff;
    padding: 25px;
    border-radius: 6px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    border: 1px solid #e0e7ff;
}

.data-item h4 {
    font-size: 14px;
    color: #666;
    margin-bottom: 8px;
    font-weight: normal;
}

.data-item p {
    font-size: 20px;
    font-weight: bold;
    color: #0066cc;
}

.data-item .unit {
    font-size: 20px;
    font-weight: bold;
    color: #0066cc;
    margin-left: 5px;
}

/* 企业荣誉区域 */
.honors {
    padding: 60px 0;
    background-color: #fff;
}

.honors h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    color: #0066cc;
    font-weight: bold;
}

.honor-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.honor-item {
    background-color: #f0f4f8;
    padding: 25px;
    border-radius: 6px;
    text-align: center;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    border: 1px solid #e0e7ff;
}

.honor-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    border-color: #0066cc;
}

.honor-item h4 {
    font-size: 16px;
    margin-bottom: 8px;
    color: #0066cc;
    font-weight: bold;
}

.honor-item p {
    font-size: 14px;
    color: #666;
    margin-bottom: 12px;
}

.honor-item .image-item {
    width: 100%;
    margin-top: 8px;
}

.honor-item .image-item img {
    height: 130px;
    object-fit: contain;
    border-radius: 4px;
}

/* 产品展示区域 */
.gallery {
    padding: 60px 0;
    background-color: #f0f4f8;
}

.gallery h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    color: #0066cc;
    font-weight: bold;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 15px;
}

.image-item {
    width: 100%;
    margin-top: 8px;
}

.image-item img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e7ff;
}

.service-item .image-item img {
    height: 120px;
    object-fit: cover;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #e0e7ff;
}

.image-item img:hover {
    transform: scale(1.03);
    box-shadow: 0 3px 10px rgba(0,0,0,0.15);
    border-color: #0066cc;
}

/* 新闻区域 */
.news {
    padding: 60px 0;
    background-color: #fff;
}

.news h3 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 30px;
    color: #0066cc;
    font-weight: bold;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.news-item {
    background-color: #f0f4f8;
    padding: 25px;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 4px solid #0066cc;
    border: 1px solid #e0e7ff;
    min-height: 400px;
}

.news-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
    border-left-color: #0099ff;
    border-color: #0066cc;
}

.news-item h4 {
    font-size: 18px;
    margin-bottom: 12px;
    color: #0066cc;
    font-weight: bold;
}

.news-item p {
    margin-bottom: 12px;
    color: #333;
    font-size: 14px;
}

.news-item .image-item {
    width: 100%;
    margin-top: 8px;
}

.news-item .image-item img {
    height: auto;
    max-height: 200px;
    object-fit: contain;
    border-radius: 6px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

/* 联系我们页：左右对称 50% / 左图拉向中缝 + 信息卡片与右侧同为白底 */
.contact-split-page {
    background: #fff;
    padding: 0;
}

.contact-split {
    display: flex;
    flex-wrap: nowrap;
    align-items: stretch;
    min-height: min(88vh, 900px);
    width: 100%;
    max-width: none;
    margin: 0;
}

.contact-split-visual {
    position: relative;
    flex: 1 1 50%;
    min-width: 0;
    min-height: 480px;
    background-size: cover;
    background-position: right center;
    background-repeat: no-repeat;
}

.contact-split-mask {
    position: absolute;
    inset: 0;
    background: rgba(248, 250, 252, 0.22);
    pointer-events: none;
}

.contact-split-aside-inner {
    position: relative;
    z-index: 1;
    height: 100%;
    min-height: 100%;
    padding: 48px clamp(24px, 4vw, 56px);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
}

.contact-glass-card {
    width: 100%;
    max-width: 420px;
    padding: 8px 0 0;
    border-radius: 12px;
    background: #fff;
    border: 1px solid #e2e8f0;
    box-shadow: 0 8px 32px rgba(15, 40, 80, 0.06);
    overflow: hidden;
}

.contact-glass-row {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 18px 20px;
    border-bottom: 1px solid #e8edf4;
}

.contact-glass-row:last-child {
    border-bottom: none;
}

.contact-glass-row-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.contact-glass-tag {
    font-size: 13px;
    color: #64748b;
    font-weight: 500;
}

.contact-glass-value {
    font-size: 14px;
    line-height: 1.5;
    color: #334155;
    word-break: break-word;
}

.contact-glass-value-highlight {
    font-size: 17px;
    font-weight: 600;
    color: #0066cc;
}

a.contact-glass-value-highlight {
    text-decoration: none;
}

a.contact-glass-value-highlight:hover {
    text-decoration: underline;
}

.contact-icon-glass {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #0078e8, #0066cc);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.35);
}

.contact-icon-glass svg {
    width: 20px;
    height: 20px;
    stroke: #fff;
    stroke-width: 1.75;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.contact-icon-glass svg circle {
    fill: #fff;
    stroke: none;
}

.contact-icon-glass-sm {
    width: 32px;
    height: 32px;
}

.contact-icon-glass-sm svg {
    width: 16px;
    height: 16px;
    stroke: #fff;
}

.contact-icon-glass-sm svg path {
    fill: none;
}

.contact-glass-row-qr {
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.contact-glass-qr-copy {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    flex: 1;
    min-width: 0;
}

.contact-glass-qr-hint {
    margin: 0;
    font-size: 13px;
    line-height: 1.55;
    color: #475569;
}

.contact-qr-box {
    width: 96px;
    height: 96px;
    flex-shrink: 0;
    border-radius: 8px;
    background: #fff;
    border: 1px solid #e2e8f0;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.contact-qr-box-inner {
    font-size: 11px;
    font-weight: 700;
    color: #94a3b8;
    letter-spacing: 0.05em;
}

.contact-split-form-panel {
    flex: 1 1 50%;
    min-width: 0;
    background: #fff;
    padding: 48px clamp(24px, 4vw, 56px) 60px;
    box-sizing: border-box;
    border-left: 1px solid #e8edf4;
    box-shadow: none;
}

.contact-cooperation-head {
    text-align: left;
    margin-bottom: 32px;
    padding-bottom: 0;
    border-bottom: none;
}

.contact-cooperation-kicker {
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.35em;
    text-transform: uppercase;
    color: #0066cc;
    margin: 0 0 10px;
}

.contact-cooperation-title {
    font-size: 32px;
    font-weight: 700;
    color: #111827;
    margin: 0 0 14px;
    letter-spacing: 0.02em;
}

.contact-cooperation-intro {
    font-size: 14px;
    color: #6b7280;
    line-height: 1.7;
    margin: 0;
    max-width: none;
}

.contact-split-form-panel .contact-cooperation-intro {
    margin: 0;
    max-width: 520px;
}

.contact-cooperation-form .cooperation-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 22px 28px;
}

.contact-cooperation-form .form-group-full {
    grid-column: 1 / -1;
}

.contact-cooperation-form .form-group {
    margin-bottom: 0;
}

.contact-cooperation-form .form-group label {
    display: block;
    font-size: 13px;
    color: #374151;
    margin-bottom: 8px;
    font-weight: 500;
}

.contact-cooperation-form .required {
    color: #dc2626;
}

.contact-cooperation-form .form-group input,
.contact-cooperation-form .form-group textarea {
    width: 100%;
    border: 1px solid #e2e8f0;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: #fff;
    color: #111827;
}

.contact-cooperation-form .form-group input::placeholder,
.contact-cooperation-form .form-group textarea::placeholder {
    color: #9ca3af;
}

.contact-cooperation-form .form-group input:focus,
.contact-cooperation-form .form-group textarea:focus {
    border-color: #0066cc;
    box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.12);
}

.contact-cooperation-form .form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.captcha-row {
    display: flex;
    align-items: stretch;
    gap: 12px;
}

.captcha-row input {
    flex: 1;
    min-width: 0;
}

.captcha-placeholder-img {
    flex-shrink: 0;
    width: 128px;
    min-height: 46px;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    letter-spacing: 0.15em;
    color: #475569;
    font-family: ui-monospace, monospace;
    user-select: none;
}

.form-submit-row {
    margin-top: 32px;
    text-align: center;
}

.btn-submit-cooperation {
    min-width: 220px;
    background: linear-gradient(180deg, #1a7eea 0%, #0066cc 55%, #0055aa 100%);
    color: #fff;
    border: none;
    border-radius: 999px;
    padding: 14px 48px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.15em;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    box-shadow: 0 6px 20px rgba(0, 102, 204, 0.38);
}

.btn-submit-cooperation:hover {
    filter: brightness(1.06);
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(0, 102, 204, 0.45);
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 30px 0;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.footer-info h3 {
    margin-bottom: 8px;
    color: #fff;
    font-size: 18px;
}

.footer-info p {
    font-size: 14px;
    line-height: 1.5;
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 8px;
}

.footer-links ul li a {
    text-decoration: none;
    color: #bdc3c7;
    transition: color 0.3s ease;
    font-size: 14px;
}

.footer-links ul li a:hover {
    color: #0066cc;
}

.footer-bottom {
    text-align: center;
    padding-top: 15px;
    border-top: 1px solid #34495e;
    font-size: 13px;
    color: #95a5a6;
}
.footer-bottom a {
    color: #fff;
    text-decoration: none;
}

.footer-bottom a:hover {
    color: #fff;
    text-decoration: none;
    opacity: 0.85;
}


/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }

    .logo {
        width: auto;
        height: 45px;
        gap: 2px;
    }

    .logo img {
        width: 150px;
        height: 100%;
        object-fit: contain;
        margin-right: -20px;
    }

    .logo-title {
        font-size: 18px;
        letter-spacing: 0.5px;
    }

    .menu-toggle {
        display: block;
    }

    nav {
        width: auto;
        margin-top: 0;
    }

    nav ul {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: rgba(255, 255, 255, 0.95);
        flex-direction: column;
        align-items: center;
        padding: 20px 0;
        box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        display: none;
        margin-top: 0;
    }

    nav ul.active {
        display: flex;
    }

    nav ul li {
        margin: 10px 0;
    }

    nav ul li a {
        color: #333;
    }

    nav ul li a:hover {
        color: #0066cc;
    }

    nav ul li a.active {
        color: #0066cc;
    }

    nav ul li a.active::after {
        background-color: #0066cc;
    }
    
    .hero-content h2 {
        font-size: 28px;
    }
    
    .hero-content p {
        font-size: 16px;
    }

    .hero-text {
        font-size: 20px !important;
        line-height: 1.5;
    }

    .cta-button {
        font-size: 22px;
        padding: 10px 30px;
        border-radius: 14px;
        box-shadow: 4px 4px 0 #ef2a1a, 7px 7px 0 #f4df14;
        margin-top: 36px;
    }

    .cta-button::before {
        top: -28px;
    }
    
    .services h3,
    .core-data h3,
    .honors h3,
    .gallery h3,
    .news h3 {
        font-size: 24px;
    }
    
    .service-container {
        flex-direction: column;
        gap: 10px;
        background-color: transparent;
        box-shadow: none;
        perspective: none;
    }
    
    .service-card {
        flex: 1 1 auto;
        min-height: 230px;
        border: 1px solid #d6deed;
        border-radius: 10px;
        transform: none;
        box-shadow: 0 6px 16px rgba(7, 25, 53, 0.1);
        clip-path: none;
    }
    
    .service-card.active {
        flex: 1 1 auto;
    }

    .service-content {
        position: relative;
        height: auto;
        opacity: 1;
        pointer-events: auto;
        transform: none;
    }

    .service-card::before {
        opacity: 0;
    }

    .service-info {
        width: 55%;
        clip-path: inset(0 0 0 0);
        opacity: 1;
    }

    .service-divider {
        opacity: 1;
        transform: none;
        width: 18px;
    }

    .service-image {
        transform: none;
    }

    .service-image img {
        transform: scale(1);
    }

    .service-desc {
        max-width: 240px;
        opacity: 1;
        transform: none;
        color: #72809b;
    }

    .service-header {
        background-color: #fff;
        border-bottom: 1px solid #e3e8f3;
    }

    .service-header h4 {
        font-size: 18px;
        color: #0066cc;
        text-shadow: none;
    }

    .contact-split {
        flex-direction: column;
        min-height: 0;
    }

    .contact-split-visual {
        flex: none;
        min-height: 340px;
        width: 100%;
        background-position: center center;
    }

    .contact-split-aside-inner {
        padding: 32px 18px 36px;
        justify-content: flex-start;
    }

    .contact-split-form-panel {
        border-left: none;
        border-top: 1px solid #e8edf4;
    }

    .contact-glass-card {
        max-width: none;
    }

    .contact-glass-row-qr {
        flex-direction: column;
        align-items: stretch;
    }

    .contact-qr-box {
        align-self: center;
    }

    .contact-split-form-panel {
        box-shadow: none;
        padding: 28px 20px 40px;
        flex: none;
        width: 100%;
    }

    .contact-cooperation-title {
        font-size: 26px;
    }

    .contact-cooperation-form .cooperation-form-grid {
        grid-template-columns: 1fr;
    }

    .captcha-row {
        flex-direction: column;
    }

    .captcha-placeholder-img {
        width: 100%;
        height: 48px;
    }
}

/* 产品与服务 — 产品与解决方案轮播 */
.products-solutions-section {
    padding: 52px 0 56px;
    background: linear-gradient(180deg, #e8f2fc 0%, #f4f8fd 38%, #fafcfe 72%, #ffffff 100%);
}

.products-solutions-inner {
    max-width: 1200px;
}

.products > .container:not(.products-solutions-inner) {
    padding-top: 52px;
    padding-bottom: 60px;
}

.products-solutions-head {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 36px;
    flex-wrap: wrap;
}

.products-solutions-en {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.12em;
    color: #3d7fd4;
    margin: 0 0 8px;
    text-transform: uppercase;
    font-family: "Helvetica Neue", Arial, sans-serif;
}

.products-solutions-zh {
    font-size: clamp(26px, 4vw, 34px);
    font-weight: 700;
    color: #0d2d5c;
    margin: 0;
    letter-spacing: 0.02em;
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

.products-solutions-nav {
    display: flex;
    gap: 14px;
    align-items: center;
}

.carousel-nav-btn {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #0d3a7a;
    transition: opacity 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.carousel-nav-prev {
    background: rgba(61, 127, 212, 0.18);
}

.carousel-nav-next {
    background: #fff;
    box-shadow: 0 4px 14px rgba(13, 45, 92, 0.12);
}

.carousel-nav-btn:hover:not(:disabled) {
    transform: scale(1.04);
}

.carousel-nav-btn:disabled {
    opacity: 0.38;
    cursor: not-allowed;
    transform: none;
}

.products-carousel-viewport {
    overflow: hidden;
    width: 100%;
    margin: 0 auto;
    container-type: inline-size;
    container-name: prod-carousel;
}

.products-carousel-track {
    display: flex;
    gap: 24px;
    transition: transform 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    will-change: transform;
}

@media (prefers-reduced-motion: reduce) {
    .products-carousel-track {
        transition: none;
    }

    .products-carousel-progress-fill {
        transition: none;
    }

    .products-carousel-progress-dot {
        transition: none;
    }
}

.products-carousel-card {
    flex: 0 0 calc((100cqi - 48px) / 3);
    min-width: 0;
    margin: 0;
}

.products-carousel-card-inner {
    background: #fff;
    border-radius: 26px;
    aspect-ratio: 4 / 3;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px 18px;
    box-shadow: 0 8px 28px rgba(13, 45, 92, 0.08);
}

.products-carousel-card-inner img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    display: block;
}

.products-solutions-footer {
    margin-top: 36px;
}

.products-carousel-progress {
    width: 100%;
}

.products-carousel-progress-track {
    height: 6px;
    border-radius: 999px;
    background: rgba(61, 127, 212, 0.16);
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(13, 45, 92, 0.06);
}

.products-carousel-progress-fill {
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, #3d8aed 0%, #0066cc 45%, #0055aa 100%);
    box-shadow: 0 0 12px rgba(0, 102, 204, 0.35);
    transition: width 0.45s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.products-carousel-progress-dots {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 16px;
}

.products-carousel-progress-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.55);
    transition:
        transform 0.35s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        background 0.35s ease,
        box-shadow 0.35s ease;
}

.products-carousel-progress-dot.is-active {
    transform: scale(1.45);
    background: linear-gradient(180deg, #3d8aed 0%, #0066cc 100%);
    box-shadow: 0 2px 10px rgba(0, 102, 204, 0.45);
}

@media (max-width: 900px) {
    .products-carousel-card {
        flex: 0 0 calc((100cqi - 24px) / 2);
    }

    .products-solutions-head {
        margin-bottom: 28px;
    }
}

@media (max-width: 560px) {
    .products-carousel-card {
        flex: 0 0 100cqi;
    }

    .products-solutions-nav {
        width: 100%;
        justify-content: flex-end;
    }

    .products-solutions-section {
        padding: 36px 0 44px;
    }
}

@media (max-width: 480px) {
    .service-list,
    .data-list,
    .honor-list,
    .image-grid,
    .news-list {
        grid-template-columns: 1fr;
    }
    
    nav ul {
        flex-wrap: wrap;
    }
    
    nav ul li {
        margin-bottom: 10px;
    }
}