@import url("https://fonts.googleapis.com/css?family=Poppins:300,400,500,600,700,900&display=swap");
body{font-family: "Noto Sans SC";}
.clear{font-size:0; line-height:0;clear: both;overflow: hidden; zoom: 1;}
.fr{float:right;}
.fl{float:left;}
a{text-decoration:none;}
a:hover{text-decoration:none; color:#c01701;transition:all 0.2s linear 0s;}
@charset "utf-8";

.animated-text {
            font-size:2vw;
            font-weight: 700;
            line-height: 2.6vw;
            margin: 0px 0 0.5vw 0;            
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .animated-text span {
            display: inline-block;
            opacity: 0;
            transform: translateY(20px);
        }
        
        /* 茹�����紫��膠� */
        .animate-text .animated-text span {
            animation: fadeInUp 0.5s forwards;
        }
        
        /* �水��1���� - 筝㊦���綺� */
        .animate-text .animated-text.section-1-text span:nth-child(1) { animation-delay: 0.1s; }
        .animate-text .animated-text.section-1-text span:nth-child(2) { animation-delay: 0.2s; }
        .animate-text .animated-text.section-1-text span:nth-child(3) { animation-delay: 0.3s; }
        .animate-text .animated-text.section-1-text span:nth-child(4) { animation-delay: 0.4s; }
        .animate-text .animated-text.section-1-text span:nth-child(5) { animation-delay: 0.5s; }
        .animate-text .animated-text.section-1-text span:nth-child(6) { animation-delay: 0.6s; }
        .animate-text .animated-text.section-1-text span:nth-child(7) { animation-delay: 0.7s; }
		.animate-text .animated-text.section-1-text span:nth-child(8) { animation-delay: 0.8s; }
        .animate-text .animated-text.section-1-text span:nth-child(9) { animation-delay: 0.9s; }
        .animate-text .animated-text.section-1-text span:nth-child(10) { animation-delay: 1.0s; }
        .animate-text .animated-text.section-1-text span:nth-child(11) { animation-delay: 1.1s; }
        .animate-text .animated-text.section-1-text span:nth-child(12) { animation-delay: 1.2s; }
        .animate-text .animated-text.section-1-text span:nth-child(13) { animation-delay: 1.3s; }
		.animate-text .animated-text.section-1-text span:nth-child(14) { animation-delay: 1.4s; }
        .animate-text .animated-text.section-1-text span:nth-child(15) { animation-delay: 1.5s; }
        .animate-text .animated-text.section-1-text span:nth-child(16) { animation-delay: 1.6s; }
        
        /* �水��2���� - 莨��∫��綺� */
        .animate-text .animated-text.section-2-text span:nth-child(1) { animation-delay: 0.15s; }
        .animate-text .animated-text.section-2-text span:nth-child(2) { animation-delay: 0.3s; }
        .animate-text .animated-text.section-2-text span:nth-child(3) { animation-delay: 0.45s; }
        .animate-text .animated-text.section-2-text span:nth-child(4) { animation-delay: 0.6s; }
        .animate-text .animated-text.section-2-text span:nth-child(5) { animation-delay: 0.75s; }
        .animate-text .animated-text.section-2-text span:nth-child(6) { animation-delay: 0.9s; }
        .animate-text .animated-text.section-2-text span:nth-child(7) { animation-delay: 1.05s; }
        .animate-text .animated-text.section-2-text span:nth-child(8) { animation-delay: 1.2s; }
        
        /* �水��3���� - 莨�綽���綺� */
        .animate-text .animated-text.section-3-text span:nth-child(1) { animation-delay: 0.05s; }
        .animate-text .animated-text.section-3-text span:nth-child(2) { animation-delay: 0.1s; }
        .animate-text .animated-text.section-3-text span:nth-child(3) { animation-delay: 0.15s; }
        .animate-text .animated-text.section-3-text span:nth-child(4) { animation-delay: 0.2s; }
        .animate-text .animated-text.section-3-text span:nth-child(5) { animation-delay: 0.25s; }
        .animate-text .animated-text.section-3-text span:nth-child(6) { animation-delay: 0.3s; }
        .animate-text .animated-text.section-3-text span:nth-child(7) { animation-delay: 0.35s; }
        .animate-text .animated-text.section-3-text span:nth-child(8) { animation-delay: 0.4s; }
        .animate-text .animated-text.section-3-text span:nth-child(9) { animation-delay: 0.45s; }
        
        @keyframes fadeInUp {
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

/* CSS Document */
* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            
        }
        
        html {
            scroll-behavior: smooth;
        }
        
        body {
            background-color: #ffffff;
            color: #333333;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        /* 通用样式 */
        .section {
            width: 100%;
            position: relative;
        }
        
        .container {
            max-width: 88%;
            margin: 0 auto;
            padding: 0 0px;
        }
        
        h1, h2, h3 {
            color: #222222;
            margin-bottom: 1rem;
        }
        
        p {
            font-size: 1.1rem;
            margin-bottom: 1.5rem;
            opacity: 0.9;
        }
        
        /* 视频板块样式 */
        #hero {
            height: 100vh;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: #f8f9fa;
        }
        
        .hero-video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 1;
        }
        
        .hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(255, 255, 255, 0);
            z-index: 2;
        }
        
        .hero-content {
            position: relative;
            z-index: 3;
            text-align: center;
            max-width: 800px;
            padding: 0 20px;
            transform: translateY(30px);
            opacity: 0;
            animation: fadeInUp 1.2s ease-out forwards;
            animation-delay: 0.5s;
        }
        
        .hero-content h1 {
            font-size: 3vw;
            margin-bottom: 0.5vw;
            color: #fff;
        }
        
        .hero-content p {letter-spacing: 15px;
            font-size: 1.3vw;
            line-height: 1.8;
            color: #fff;
        }
        
        /* 数字跳动板块 */
        #counter {
            padding: 100px 0;
            background-color: #ffffff;
        }
        
        .counter-title {
            text-align: center;
            margin-bottom: 0px;
            opacity: 0;
            transform: translateY(30px);
            transition: all 1s ease;
            color: #333333;
        }
        
        .counter-title.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .counter-container {
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            gap: 0px;
        }
        
        .counter-item {
            text-align: center;
            flex: 1;
            min-width: 200px;
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.8s ease;
        }
        
        .counter-item.animate {
            opacity: 1;
            transform: translateY(0);
        }
		
		.shu{overflow: hidden;}
        
        .counter-number {font-family: "Poppins", sans-serif;
            font-size: 3vw;
            font-weight: 700;display: inline;
            color: #3a7bd5;
            margin-bottom: 0vw;
        }
		
		.shu span{display: inline;
    font-size: 2vw;
    color: #666;
    position: relative;
    bottom: 0.2vw;}
        
        .counter-text {
            font-size:1.1vw;
            color: #666666;
        }
        
        /* 左右结构板块 */
        #features {
            padding:1vw 0 2vw 0;
            background-color: #fff;
        }
        
        .feature-item {background: #f4f4f4;
            display: flex;
            align-items: center;
            gap: 5%;
            margin-bottom: 80px;
            opacity: 0;
            transform: translateY(60px);
            transition: all 1s ease;
        }
        
        .feature-item.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .feature-item.reverse {
            flex-direction: row-reverse;
        }
        
        .feature-image {
            flex: 1;
            border-radius: 0px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            /*transform: perspective(1000px) rotateY(-10deg);*/
            transition: transform 0.8s ease;
        }
        
        .feature-item:hover .feature-image {
            transform: perspective(1000px) rotateY(0);
        }
        
        .feature-image img {
            width: 100%;
            height: 23vw;object-fit: cover;
            display: block;
            transition: transform 0.8s ease;
        }
        
        .feature-item:hover .feature-image img {
            transform: scale(1.05);
        }
        
        .feature-content {
            flex: 1;
        }
        
        .feature-content h3 {
            font-size: 2rem;
            margin-bottom: 1.5rem;
            color: #3a7bd5;
        }
        
        .feature-content p {width: 90%;
            color: #666;
    font-size: 1vw;
    line-height: 1.8vw;
        }
		
		.ggl{width: 100%;margin:0 0 3vw 0;
    text-align: center;}
		.ggl h3{font-size: 2vw;
    color: #222;}
		.ggl p{font-size: 1vw;
    color: #666;}
        
        /* 第四板块：全屏滚动切换 - 去除遮罩层 */
        #slider-section {
            position: relative;
            height: 240vh; /* 整体高度为240vh */
            background-color: #ffffff;
            z-index: 10;
        }
        
        .slider-container {
            position: sticky;
            top: 0;
            left: 0;
            width: 100%;
            height: 100vh;
            overflow: hidden;
        }
        
        .slide {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 80vh; /* 每张图片高度为80vh */
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 1;
            transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        
        /* 第一张图初始在最上层 */
        .slide.slide-1 {
            transform: translateY(0);
            z-index: 3;
        }
        
        /* 第二张图初始在下方 */
        .slide.slide-2 {
            transform: translateY(80vh);
            z-index: 2;
        }
        
        /* 第三张图初始在最下方 */
        .slide.slide-3 {
            transform: translateY(160vh);
            z-index: 1;
        }
        
        .slide-content {
            text-align:left;
            width: 88%;
            padding: 0 0px;
            z-index: 2;
            position: relative;
            opacity: 1;
            transform: translateY(40px);
            transition: all 0.8s ease;
        }
        
        .slide.active .slide-content {
            opacity: 1;
            transform: translateY(0);
        }
        
        .slide-image {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            z-index: 1;
        }
        
        .slide-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            /*background: linear-gradient(to bottom, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));*/
            z-index: 1;
        }
        
        .slide-content h2 {font-size:6vw;font-weight:bold;font-family: "Poppins", sans-serif;
            color: #fff;
            margin-bottom: 20px;
        }
		
		.slide-content h2 span{font-size:2vw;font-weight:normal;position: relative;
    top: -1.3vw;
    left: 0.5vw;}
        
        .slide-content p {font-size:1vw;line-height:1.8vw;
            color: #fff;
        }
        
        .slide-progress {opacity: 0;
            position: absolute;
            bottom: 40px;
            left: 0;
            width: 100%;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            z-index: 5;
        }
        
        .progress-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background-color: rgba(0, 0, 0, 0.2);
            transition: all 0.3s ease;
        }
        
        .progress-dot.active {
            background-color: #3a7bd5;
            transform: scale(1.3);
        }
        
        .progress-text {
            font-size: 0.9rem;
            color: #666666;
            margin-left: 10px;
        }
        
        /* 第五板块：科研团队 */
        #team {
            padding:0 0 5vw 0;
            background-color: #fff;
            position: relative;
            z-index: 999;
            opacity: 0;
            transform: translateY(50px);
            transition: all 1.2s ease;
        }
        
        #team.show {
            opacity: 1;
            transform: translateY(0);
        }
        
        .team-title {font-size:2vw;
            text-align: center;
            margin:-4vw 0 60px 0;
            opacity: 0;
            transform: translateY(30px);
            transition: all 1s ease;
            color: #333333;
        }
        
        .team-title.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .team-section {
            margin-bottom: 80px;
            opacity: 0;
            transform: translateY(60px);
            transition: all 1s ease;
        }
        
        .team-section.animate {
            opacity: 1;
            transform: translateY(0);
        }
        
        .team-item {
            display: flex;
            align-items: center;
            gap: 10%;
        }
        
        .team-content {
            flex: 1;
        }
        
        .team-content h3 {
            color: #3a7bd5;
        }
        
        .team-content p {
            color: #666;
    font-size: 1vw;
    line-height: 2vw;
    margin: 0;
        }
        
        .team-image {
            flex: 1;
            border-radius: 0px;
            overflow: hidden;
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .team-image img {
            width: 100%;
            height: 18vw;object-fit: cover;
            display: block;
            transition: transform 0.8s ease;
        }
        
        .team-image:hover img {
            transform: scale(1.05);
        }
        
        /* Footer板块 */
        #footer {
            
            opacity: 0;
            transform: translateY(80px);
            transition: all 1.2s ease;
        }
        
        #footer.show {
            opacity: 1;
            transform: translateY(0);
        }
        
        
        
        /* 动画定义 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .feature-item, .team-item {
                flex-direction: column;
                gap: 40px;
            }
            
            .hero-content h1 {
                font-size: 2.8rem;
            }
            
            .counter-number {
                font-size: 3rem;
            }
            
            #slider-section {
                height: 300vh;
            }
            
            .slide {
                height: 100vh;
            }
            
            .footer-content {
                flex-direction: column;
                gap: 40px;
            }
        }
        
        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2.2rem;
            }
            
            .hero-content p {
                font-size: 1.1rem;
            }
            
            .counter-container {
                flex-direction: column;
                align-items: center;
            }
            
            .counter-item {
                min-width: 100%;
            }
            
            #slider-section {
                height: 360vh;
            }
            
            .team-item, .feature-item {
                gap: 30px;
            }
        }
        /* 回到顶部按钮样式 */
        .back-to-top {
            position: fixed;
            bottom: 40px;
            right: 40px;
            width: 50px;
            height: 50px;
            background-color: #1177e3;
            color: white;
            border: none;
            border-radius: 50%;
            cursor: pointer;
            opacity: 0;
            visibility: hidden;
            transform: translateY(20px);
            transition: all 0.3s ease;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
        }

        .back-to-top:hover {
            background: linear-gradient(135deg, #3a0ca3, #4361ee);;
            transform: translateY(-10px);
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        }

        .back-to-top.visible {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .back-to-top i {
            font-size: 18px;
        }

        /* 移动端适配 */
        @media (max-width: 768px) {
            .back-to-top {
                bottom: 20px;
                right: 20px;
                width: 45px;
                height: 45px;
            }
        }
/* ============================================ */
/* 移动端样式 - 仅针对屏幕宽度 ≤ 768px 的设备   */
/* 完全保留原有电脑端样式，仅进行响应式覆盖适配   */
/* ============================================ */

@media screen and (max-width: 768px) {
  /* 全局调整 */
  body {
    overflow-x: hidden;
    width: 100%;
  }

  .container {
    max-width: 92%;
    padding: 0 10px;
  }

  /* ========== 导航栏移动端优化 ========== */
  .caidan {
    padding: 12px 5%;
    position: relative;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
  }

  .logo img {
    max-height: 40px;
    width: auto;
  }

  /* 汉堡菜单按钮样式增强 */
  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    cursor: pointer;
  }

  .menu-toggle i {
    font-size: 24px;
  }

  /* 移动端菜单面板 */
  #menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 80%;
    height: calc(100vh - 70px);
    background: #ffffff;
    flex-direction: column;
    align-items: flex-start;
    padding: 30px 25px;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
    transition: left 0.3s ease;
    z-index: 1000;
    overflow-y: auto;
  }

  #menu-toggle-checkbox:checked ~ #menu {
    left: 0;
  }

  #menu li {
    width: 100%;
    margin: 12px 0;
  }

  #menu li a {
    font-size: 18px;
    padding: 8px 0;
    display: block;
    color: #333;
  }

  /* 二级菜单移动端样式 */
  .submenu {
    position: static;
    width: 100%;
    background: #f8f8f8;
    box-shadow: none;
    padding: 0 0 0 20px;
    margin-top: 8px;
    display: none;
  }

  #menu li:hover .submenu,
  #menu li:focus-within .submenu {
    display: block;
  }

  .submenu li {
    margin: 8px 0;
  }

  .submenu li a {
    font-size: 16px;
  }

  /* 搜索区域移动端调整 */
  .search-container {
    margin-left: auto;
  }

  .search-box {
    width: 180px;
  }

  .search-box input {
    width: 100%;
    padding: 6px 10px;
    font-size: 14px;
  }

  /* ========== 视频板块 ========== */
  #hero {
    height: 70vh;
    min-height: 500px;
  }

  .hero-content {
    padding: 0 20px;
    transform: translateY(0);
  }

  .hero-content h1 {
    font-size: 8vw;
    margin-bottom: 12px;
  }

  .hero-content p {
    font-size: 3.5vw;
    letter-spacing: 6px;
    line-height: 1.5;
  }

  /* ========== 数字跳动板块 ========== */
  #counter {
    padding: 60px 0;
  }

  .counter-container {
    flex-direction: column;
    gap: 40px;
  }

  .counter-item {
    min-width: auto;
    width: 100%;
    text-align: center;
  }

  .counter-number {
    font-size: 12vw;
  }

  .shu span {
    font-size: 6vw;
    bottom: 0.5vw;
  }

  .counter-text {
    font-size: 4vw;
    margin-top: 8px;
  }

  /* ========== 动画文字区域 (ggl) ========== */
  .ggl {
    margin: 40px 0;
    padding: 0 20px;
  }

  .animated-text {
    font-size: 7vw;
    line-height: 1.4;
    flex-wrap: wrap;
    text-align: center;
  }

  .animated-text span {
    white-space: nowrap;
  }

  .ggl p {
    font-size: 3.5vw;
    width: 90%;
    margin: 15px auto 0;
    line-height: 1.5;
  }

  /* ========== 全屏滚动切换板块 (第四板块) ========== */
  #slider-section {
    height: 200vh; /* 移动端降低总高度，保证滚动顺畅 */
  }

  .slider-container {
    height: 100vh;
  }

  .slide {
    height: 80vh;
  }

  .slide-content {
    width: 85%;
    left: 0;
    right: 0;
    margin: 0 auto;
    text-align: center;
    padding: 20px;
    background: rgba(0, 0, 0, 0.3);
    border-radius: 16px;
    backdrop-filter: blur(3px);
  }

  .slide-content h2 {
    font-size: 12vw;
    margin-bottom: 12px;
  }

  .slide-content h2 span {
    font-size: 4vw;
    top: -0.8vw;
    display: inline-block;
  }

  .slide-content p {
    font-size: 3.8vw;
    line-height: 1.5;
    margin-bottom: 0;
  }

  .slide-progress {
    bottom: 20px;
    gap: 12px;
  }

  .progress-dot {
    width: 8px;
    height: 8px;
  }

  .progress-text {
    font-size: 12px;
  }

  /* ========== 科研团队板块 ========== */
  #team {
    padding: 40px 0 60px;
  }

  .team-title {
    font-size: 7vw;
    margin: 20px 0 40px;
  }

  .team-section {
    margin-bottom: 50px;
  }

  .team-item {
    flex-direction: column;
    gap: 25px;
  }

  .team-content {
    width: 100%;
    text-align: center;
    padding: 0 10px;
  }

  .team-content p {
    font-size: 4vw;
    line-height: 1.6;
    margin-bottom: 8px;
  }

  .team-image {
    width: 100%;
    border-radius: 12px;
  }

  .team-image img {
    height: auto;
    max-height: 280px;
    width: 100%;
    object-fit: cover;
  }

  /* 交替顺序在移动端保持一致（图片在上或下通过flex-direction控制） */
  .team-section:first-child .team-item {
    flex-direction: column-reverse;
  }

  .team-section:last-child .team-item {
    flex-direction: column;
  }

  /* ========== 页脚优化 ========== */
  footer .f_bg {
    padding: 40px 5%;
  }

  .footer {
    flex-direction: column;
    text-align: center;
  }

  .f_logo,
  .f_ban,
  .f_er {
    float: none;
    width: 100%;
    margin-bottom: 30px;
    text-align: center;
  }

  .f_logo img {
    max-width: 180px;
    margin-bottom: 15px;
  }

  .f_logo dd {
    font-size: 12px;
    line-height: 1.5;
  }

  .f_ban p {
    font-size: 14px;
    margin: 10px 0;
  }

  .f_ban p span {
    font-size: 14px;
    display: inline-block;
  }

  .f_er {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
  }

  .f_er p {
    width: auto;
    margin: 0 10px;
  }

  .f_er p img {
    width: 70px;
    height: 70px;
    margin-bottom: 8px;
  }

  .f_er p span {
    font-size: 10px;
    display: block;
  }

  /* ========== 回到顶部按钮 ========== */
  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }

  .back-to-top i {
    font-size: 20px;
  }
}

/* 针对极小屏幕 (≤480px) 进一步微调 */
@media screen and (max-width: 480px) {
  .hero-content h1 {
    font-size: 10vw;
  }

  .hero-content p {
    font-size: 4.5vw;
    letter-spacing: 3px;
  }

  .counter-number {
    font-size: 15vw;
  }

  .shu span {
    font-size: 7vw;
  }

  .counter-text {
    font-size: 5vw;
  }

  .animated-text {
    font-size: 8vw;
  }

  .ggl p {
    font-size: 4.5vw;
  }

  .slide-content {
    width: 92%;
    padding: 12px;
  }

  .slide-content h2 {
    font-size: 14vw;
  }

  .slide-content h2 span {
    font-size: 5vw;
  }

  .slide-content p {
    font-size: 4.5vw;
  }

  .team-content p {
    font-size: 5vw;
  }

  .team-title {
    font-size: 9vw;
  }

  .search-box {
    width: 140px;
  }
}

/* 修复移动端横屏时的部分布局 */
@media screen and (max-width: 768px) and (orientation: landscape) {
  #hero {
    height: 100vh;
  }

  .hero-content h1 {
    font-size: 6vw;
  }

  .hero-content p {
    font-size: 2.8vw;
  }

  .slide-content {
    width: 70%;
  }

  .team-image img {
    max-height: 200px;
  }
}