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

/* 主色调绿色 */
:root {
    --main-green: #3ecf8e;
    --main-green-dark: #2ea86b;
    --main-green-light: #e6f9f0;
    --main-green-gradient: linear-gradient(135deg, #23e10d 0%, #00ff2a 100%);
    --main-green-gradient-h: linear-gradient(90deg, #52ef04 0%, #66ff00 100%);
}

body {
    /* width:1400px; */
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: #1a2e1a;
    /* overflow-x: hidden; */
    overflow-x: scroll;
    background: url('images/background.png') no-repeat center center/cover; 
    width: 100%;
    background-repeat: no-repeat;
    background-position: center;
    background-size: cover;
}

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

/* 导航栏 */
.navbar {
    /* position: fixed; */
    top: 0;
    width: 100%;
    /*background: var(--main-green-gradient-h);*/
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
    /* background: rgba(255, 255, 255, 0.8); */
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 12px rgba(62, 207, 142, 0.10);
}

.nav-container {
    /* width: 1400px; */
    width: 100%;  
    /* margin: 0 100px; */
    margin: 0 auto;  /*居中显示*/
    padding: 0 20px;
    display: flex;
    justify-content: flex-start;
    /* justify-content: space-between; 两端对齐 */
    align-items: center;
    gap: 1rem;
}

.nav-logo {
    display: flex;
    align-items: flex-start;
    font-size: 1.5rem;
    
    font-weight: 700;
    color: #1a2e1a !important;
}

.nav-logo i {
    margin-right: 0.5rem;
    font-size: 1.8rem;
}

.nav-logo span {
    color: #333

    !important;
    letter-spacing: 2px;

    font-weight: 800;
    transform: perspective(500px) rotateX(5deg);
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-logo span:hover {
    text-shadow: 
        3px 3px 0px rgba(0, 0, 0, 0.4),
        6px 6px 0px rgba(0, 0, 0, 0.3),
        9px 9px 0px rgba(0, 0, 0, 0.2),
        0 0 15px rgba(26, 63, 166, 0.4),
        0 0 30px rgba(26, 63, 166, 0.3);
    transform: perspective(500px) rotateX(0deg) scale(1.05);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 3rem;
    align-items: center;
    margin-left: 3rem;  /* 右对齐 */
    margin-right: 0rem;
}

.nav-menu a {
    text-decoration: none;
    color: #272626;
    font-weight: 500;
    transition: color 0.3s ease;
    /* padding: 0.5rem; */
    padding: auto;
    font-size: 1rem;
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: #ffd700;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}
/* 下拉菜单 */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: transparent;
    min-width: 200px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    list-style: none;
    padding: 0.5rem 0;
}

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

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1.5rem;
    color: #333;
    text-decoration: none;
    transition: background 0.3s ease;
}

.dropdown-menu a:hover {
    background-color: transparent;
    color: #ffd700;
}



.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #272626;
    margin: 3px 0;
    transition: 0.3s;
}

/* 页面标题 */
.page-header {
    padding: 120px 0 60px;
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
    color: #272626;
    text-align: center;
}

.page-header h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.page-header p {
    font-size: 1.2rem;
    font-weight: 600;
    color: #272626;
}

/* 首页横幅 */
.hero {
    min-height: 100vh;
    /* width: 100%; */
    margin: 0 auto;
    display: flex;
    align-items: center;
    /*background: var(--main-green-gradient);*/
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
    background: transparent;
    /* padding: 0 20px; */
}

.hero-content {
    /* max-width: 1200px; */
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    align-items: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    /*background: linear-gradient(45deg, #fff, #b6f5d7);*/
    background:  #1a2e1a;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 500;
    text-align: center;
    margin-bottom: 1rem;
    color: #1a2e1a;
}

.hero-description {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    color: #1a2e1a;
}

.hero-buttons {
    /* display: flex; */
    display: inline-block;
    text-align: center;
    /* margin-left: 20px; */
    /* margin-right: 20px; */
    /* gap: 3rem; */
}

.btn {
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    /*background: var(--main-green);*/
    background: #2563eb;
    color: #fff;
    border: none;
    margin-left: 2rem;
    margin-right: 2rem;
    
}

.btn-primary:hover {
    /*background: var(--main-green-dark); */
    background: #2563eb;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: #fff;
    color: var(--main-green-dark);
}

.btn-outline {
    background: transparent;
    /*color: var(--main-green-dark);*/
    color: #2563eb;
    /*border: 2px solid var(--main-green-dark);*/
    border: 2px solid #2563eb;
}

.btn-outline:hover {
    background: var(--main-green-dark);
    color: rgb(255, 255, 255);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.drone-animation {
    font-size: 8rem;
    animation: float 3s ease-in-out infinite;
    color: rgba(255, 255, 255, 0.8);
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* 轮播图 */
.carousel-section {
    padding: 30px 0;
    /*background: #f4fef8;*/
}

.carousel-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-top: 0rem;
    margin-bottom: 0rem;
    color: #272626;
}

.carousel {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.carousel-container {
    display: flex;
    transition: transform 0.5s ease;
}

.carousel-slide {
    min-width: 100%;
    position: relative;
    display: none;
}

.carousel-slide.active {
    display: block;
}

.carousel-image {
    width: 100%;
    /* height: 677px; */
    object-fit: cover;
    background: var(--main-green-gradient);
    display: flex;
    align-items: center;
    /*justify-content: center;*/
    color: white;
    font-size: 4rem;
}

.carousel-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    color: white;
    padding: 2rem;
    text-align: center;
}

.carousel-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.carousel-content p {
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: #333;
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-btn:hover {
    background: white;
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: 20px;
}

.carousel-btn.next {
    right: 20px;
}

.carousel-dots {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.dot {
    width: 2px;
    height: 2px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: white;
    transform: scale(1.2);
}

/* 产品分类 */
.product-categories {
    padding: 100px 0;
    /*background: white;*/
}

.product-categories h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #272626;
}

.category-grid {
    display: grid;
    /* grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); */
    grid-template-columns: repeat(2,1fr);
    gap: 2rem;
}

.category-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem 2rem;
    text-align: center;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #b6f5d7;
}

.category-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.category-icon {
    width: 80px;
    height: 80px;
    /*background: var(--main-green-gradient);*/
    background: #2563eb;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.category-icon i {
    font-size: 2.5rem;
    color: white;
}

.category-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.category-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

/* 留言功能 */
.message-section {
    padding: 100px 0;
    /*background: #f8fafc;*/
}

.message-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #272626;
}

.section-subtitle {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 600;
    color: #272626;
    margin-bottom: 3rem;
}

.message-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.message-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: #fff;
    border-radius: 12px;
    transition: transform 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #b6f5d7;
}

.info-item:hover {
    transform: translateY(-5px);
}

.info-item i {
    font-size: 2rem;
    color: #2563eb;
    margin-top: 0.25rem;
}

.info-item h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.info-item p {
    color: #64748b;
    line-height: 1.6;
}

.message-form {
    /* background: white; */
    padding: 2rem;
    /* border-radius: 16px; */
    /* box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1); */
}
.wechat-qrcode {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 1rem 0;
}

.message-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group select {
    cursor: pointer;
}

/* 关于我们 */
.about {
    padding: 100px 0;
    /*background: #f8fafc;*/
}

.about h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #272626;
}

.about-content {
    display: grid;
    /* grid-template-columns: 1fr 1fr; */
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    /* margin-bottom: 2rem; */
    margin: 0 auto;
    color: #272626;
    line-height: 1.8;
    text-align: left;
    text-indent: 2em;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.stat {
    text-align: center;
    padding: 1.5rem;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #b6f5d7;
}

.stat h3 {
    font-size: 2rem;
    color: #2563eb;
    margin-bottom: 0.5rem;
}

.stat p {
    color: #64748b;
    font-weight: 500;
}

/* .about-image {
    display: flex;
    justify-content: center;
} */

.image-placeholder {
    width: 300px;
    height: 300px;
    /*background: var(--main-green-gradient);*/
    background: #2563eb;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
}

.image-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
}

/* 产品展示 */
.products {
    padding: 100px 0;
    /* background: white; */
}

.products h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #272626;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.product-card {
    background: #fff;
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #b6f5d7;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.product-image {
    text-align: center;
    margin-bottom: 1.5rem;
}

.product-image i {
    font-size: 3.2rem;
    color: #2563eb;
}

.product-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.product-card p {
    color: #64748b;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-card ul {
    list-style: none;
}

.product-card li {
    padding: 0.5rem 0;
    color: #64748b;
    border-bottom: 1px solid #f1f5f9;
}

.product-card li:last-child {
    border-bottom: none;
}

.product-card li::before {
    content: "✓";
    color: #2563eb;
    font-weight: bold;
    margin-right: 0.5rem;
}

/* 技术优势 */
.technology {
    padding: 100px 0;
    /* background: #f8fafc; */
}

.technology h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #272626;
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.tech-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.tech-item:hover {
    transform: translateY(-5px);
}

.tech-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.tech-icon i {
    font-size: 2rem;
    color: white;
}

.tech-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.tech-item p {
    color: #64748b;
    line-height: 1.6;
}

/* 研发实力 */
.research {
    padding: 100px 0;
    /* background: white; */
}

.research h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #272626;
}

.research-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    text-align: center;
    gap: 2rem;
}

.research-item {
    /* text-align: center; */
    padding: 2rem;
    background: #f8fafc;
    border-radius: 12px;
    border-left: 4px solid #2563eb;
}

.research-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #1e293b;
}

.research-item p {
    color: #64748b;
    line-height: 1.6;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    /* background: white; */
}

.contact h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #272626;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: #2563eb;
    margin-top: 0.25rem;
}

.contact-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.contact-item p {
    color: #181b1f;
}

.contact-form {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 12px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #2563eb;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 团队联系人 */
.team-contact {
    padding: 100px 0;
    background: #f8fafc;
}

.team-contact h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
    color: #1e293b;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.team-member {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.team-member:hover {
    transform: translateY(-5px);
}

.member-avatar {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.member-avatar i {
    font-size: 2rem;
    color: white;
}

.team-member h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #64748b;
    font-weight: 500;
}

.member-name {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #1e293b;
}

.member-phone {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #2563eb;
    font-weight: 500;
}

.member-email {
    font-size: 1rem;
    color: #64748b;
}

/* 页脚 */
.footer {
    background: #09183b;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}
.footer-section {
    text-align: center;  /* 内容居中 */
    padding: 0 1.5rem;  /* 增加内边距 */
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: #8796d5;
}

.footer-section p {
    color: #94a3b8;
    margin-bottom: 1rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #94a3b8;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #334155;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #2563eb;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

.back-to-top {
    background: var(--main-green);
    color: #fff;
}

.back-to-top:hover {
    background: var(--main-green-dark);
}

@media (max-width: 768px) {
    body {
        background: url('images/background.png') no-repeat center center;
        background-size:cover ;
        background-position: center;
        background-repeat: no-repeat;
        overflow-x: visible;
    }

    .nav-container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        gap: 0.5rem;
        padding: 0 12px;
    }

    .nav-logo {
        width: 30%;
        display: block;
        margin: 0;
    }

    /* 适配包含链接/图片/SVG的logo结构，防止超出并保证刚好铺满 */
    .nav-logo a,
    .nav-logo img,
    .nav-logo svg {
        display: block;
        width: 100%;
        max-width: 100%;
        height: auto;
    }

    .nav-logo span {
        white-space: nowrap;
    }

    .hamburger {
        display: flex;
        margin-left: auto;
        order: 2;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0.75rem;
        margin-left: 0;
        background: rgb(121 198 204 / 95%);
        backdrop-filter: blur(8px);
        border-radius: 8px;
        padding: 0.5rem 0.75rem;
        box-shadow: 0 10px 25px rgba(0, 0, 0, 0.06);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        padding: 0.5rem 0.25rem;
    }

    .carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgb(255 255 255 / 0%);
    border: none;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    color: #33c8dc;
    transition: all 0.3s ease;
    z-index: 10;
}

    .dropdown-menu {
        position: static;
        top: auto;
        left: auto;
        min-width: unset;
        box-shadow: none;
        border-radius: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        padding: 0;
        background-color: transparent;
        display: none; /* 默认隐藏，点击再展开 */
    }

    /* 若通过JS切换 display 样式或添加类名时可显示，下行可作为辅助类使用 */
    .dropdown.open .dropdown-menu,
    .dropdown .dropdown-menu[style*="block"] {
        display: block;
    }

    .page-header {
        padding: 90px 0 40px;
        text-align: center;
    }

    .page-header h1 {
        font-size: clamp(1.8rem, 7.5vw, 2.4rem);
        white-space: nowrap;
    }

    .hero {
        min-height: auto;
        padding-top: 80px;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .hero h1 {
        font-size: clamp(1.8rem, 8vw, 2.4rem);
        white-space: nowrap;
    }

    .hero-subtitle {
        font-size: clamp(1rem, 4.5vw, 1.2rem);
    }

    .hero-description {
        font-size: clamp(0.95rem, 4vw, 1.1rem);
    }

    .hero-buttons {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.75rem;
    }

    .btn {
        width: 50%;
        max-width: 200px;
    }

    .carousel {
        max-width: 100%;
        border-radius: 12px;
    }

    

    .carousel-content {
        padding: 1.5rem 1rem;
    }

    .carousel-content h3 {
        font-size: clamp(0.8rem, 4vw, 1.4rem);
        margin-bottom: 2.5rem;

        line-height: 1.0;
        /* 手机端文字右对齐并定位到右上角 */
        text-align: right;
        position: unset;
        top: 1rem;
        right: 1rem;
    }

    .carousel-content p {
        font-size: clamp(0.85rem, 3.2vw, 1rem);
        margin-bottom: 0.5rem;
        line-height: 1.0;
    }

    /* 轮播图内按钮在手机端更紧凑，并允许两个按钮同排显示 */
    .carousel-content .btn,
    .carousel-content .btn-primary {
        width: auto; /* 覆盖通用 .btn 的宽度规则 */
        background: #2564eb12;
        display: inline-block;
        min-width: clamp(92px, 32vw, 132px);
        font-size: clamp(0.82rem, 3.2vw, 0.98rem);
        padding: calc(0.45rem + 0.2vw) calc(0.8rem + 0.6vw);
        border-radius: max(6px, 1.6vw);
        margin: 0 4px; /* 两个按钮之间留出小间距 */
    }

    .product-categories,
    .message-section,
    .about,
    .products,
    .technology,
    .research,
    .contact,
    .team-contact {
        padding: 60px 0;
    }

    .category-grid,
    .message-content,
    .contact-content,
    .team-grid,
    .products-grid,
    .tech-grid,
    .research-content,
    .stats {
        grid-template-columns: 1fr;
    }

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

    .image-placeholder {
        width: 100%;
        height: auto;
        aspect-ratio: 1 / 1;
    }

    .category-icon,
    .tech-icon,
    .member-avatar {
        width: 64px;
        height: 64px;
    }

    .drone-animation {
        font-size: 5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .footer {
        padding: 2rem 0 1rem;
    }

    /* 手机端h2字体大小调整 */
    h2 {
        font-size: 1.5rem !important;
    }

    /* 手机端隐藏产品分类部分 */
    .product-categories {
        display: none !important;
    }
}