* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            overflow: hidden;
            font-family: 'Segoe UI', 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', sans-serif;
        }
        
        /* 全屏容器 */
        .fullpage-container {
            height: 100vh;
            overflow: hidden;
            position: relative;
        }
        
        /* 屏幕部分 */
        .screen {
            height: 100vh;
            width: 100%;
            position: relative;
            transition: transform 0.8s cubic-bezier(0.86, 0, 0.07, 1);
            overflow: hidden;
        }
        
        /* ========== 第一屏轮播样式 (由远及近动效) ========== */
        .banner_swiper {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .banner_swiper .swiper-slide {
            position: relative;
            overflow: hidden;
        }
        
        .banner_swiper .img_box {
            width: 100%;
            height: 100%;
            position: relative;
        }
        
        .banner_swiper .img_box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transform: scale(1.1);
            transition: transform 7s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }
        
        /* 由远及近动效 - 激活的slide图片放大 (由远拉近视觉) */
        .banner_swiper .swiper-slide-active .img_box img {
            transform: scale(1);
        }
        
        
           .banner_swiper .text_box {
            /* position: absolute;
            bottom: 22%;
            left: 8%;
            z-index: 10;
            color: white;
            text-shadow: 0 2px 20px rgba(0,0,0,0.4); */
			position: absolute;
			            top: 50%;
			            left: 50%;
			            transform: translate(-50%, -50%);
			            z-index: 10;
			            color: white;
			            text-shadow: 0 2px 20px rgba(0,0,0,0.4);
			            text-align: center;
			            width: 80%;
			            max-width: 900px;
        }
        
          /* 
        
        .banner_swiper .text_box {
            position: absolute;
            bottom: 22%;
            left: 8%;
            z-index: 10;
            color: white;
            text-shadow: 0 2px 20px rgba(0,0,0,0.4);
        }
        */
        
        .banner_swiper .text_box img {
            max-width: 320px;
            margin-bottom: 20px;
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.7s ease 0.3s;
                    filter: drop-shadow(4px 4px 6px rgba(255, 255, 255, 0.9));
        }
        
        .banner_swiper .text_box h3 {
            font-size: 3.2rem;
            font-weight: 600;
            letter-spacing: 3px;
            opacity: 0;
            transform: translateY(40px);
            transition: all 0.7s ease 0.6s;
            background: linear-gradient(135deg, #fff, #e0f0ff);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
            text-shadow: none;
        }
        
        
        
        

        
        
        
        .banner_swiper .swiper-slide-active .text_box img,
        .banner_swiper .swiper-slide-active .text_box h3 {
            opacity: 1;
            transform: translateY(0);
        }
        
        /* 缩略图导航栏 (科技感) */
        .banner_thumber {
            position: absolute;
            bottom: 30px;
            left: 0;
            right: 0;
            z-index: 20;
            padding: 0 20px;
        }
        
        .banner_thumber .swiper-wrapper {
            display: flex;
            justify-content: center;
            gap: 18px;
        }
        
        .banner_thumber .swiper-slide {
            width: auto !important;
            cursor: pointer;
            padding: 10px 26px;
            background: rgba(0, 0, 0, 0.55);
            backdrop-filter: blur(12px);
            border-radius: 60px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid rgba(255,255,255,0.25);
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }
        
        .banner_thumber .swiper-slide-thumb-active {
            background: rgba(0, 160, 255, 0.85);
            border-color: #00e0ff;
            transform: scale(1.05);
            box-shadow: 0 0 15px rgba(0,224,255,0.4);
        }
        
        .banner_thumber .swiper-slide p {
            color: white;
            margin: 0;
            font-size: 0.85rem;
            white-space: nowrap;
            font-weight: 500;
        }
        
        .banner_thumber .swiper-slide p:first-child {
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 1px;
        }
        
        .banner_thumber .swiper-slide span {
            display: block;
            width: 32px;
            height: 2px;
            background: #00e0ff;
            margin: 6px auto 0;
            transform: scaleX(0);
            transition: transform 0.3s ease;
            border-radius: 2px;
        }
        
        .banner_thumber .swiper-slide-thumb-active span {
            transform: scaleX(1);
        }
        
        /* 其他屏幕渐变背景 */
        .screen-1 { background: #03050b; }
        .screen-2 { background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%); }
        .screen-3 { background: linear-gradient(135deg, #0b1120 0%, #0f2e3f 100%); }
        /* .screen-4 { background: linear-gradient(135deg, #0a0f1e 0%, #0a2540 100%); } */
        
        .screen-content {
            /* max-width: 1200px; */
            width: 90%;
            margin: 0 auto;
            text-align: center;
            color: white;
            position: relative;
            top: 50%;
            transform: translateY(-50%);
        }
        
        .screen-content .icon-container {
            font-size: 4.5rem;
            margin-bottom: 1.5rem;
            color: #00e0ff;
        }
        
        .screen-content h2 {
            font-size: 3rem;
            margin-bottom: 1.2rem;
            font-weight: 600;
            background: linear-gradient(135deg, #fff, #a0d0ff);
            background-clip: text;
            -webkit-background-clip: text;
            color: transparent;
        }
        
        .screen-content p {
            font-size: 1.2rem;
            line-height: 1.7;
            margin-bottom: 1rem;
            opacity: 0.9;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 36px;
            background: linear-gradient(135deg, #00e0ff, #0066ff);
            color: white;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            margin-top: 25px;
            transition: all 0.3s ease;
            box-shadow: 0 5px 20px rgba(0,160,255,0.3);
            border: none;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0,160,255,0.5);
        }
        
        /* ========== 导航点样式 ========== */
        .nav-dots {
            position: fixed;
            right: 28px;
            top: 50%;
            transform: translateY(-50%);
            z-index: 100;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        
        .nav-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: rgba(255,255,255,0.4);
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .nav-dot.active {
            background: #00e0ff;
            transform: scale(1.4);
            box-shadow: 0 0 12px #00e0ff;
        }
        
        /* 进度条 */
        .progress-bar {
            position: fixed;
            top: 0;
            left: 0;
            height: 3px;
            background: linear-gradient(90deg, #00e0ff, #3a86ff, #00e0ff);
            width: 0%;
            z-index: 102;
            transition: width 0.25s ease;
        }
        
        /* ========== PC顶部导航 (调整距离：让联系我们更近) ========== */
        .ys-hd-pc {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 99;
            background: transparent;
            transition: all 0.3s ease;
            padding: 18px 40px;
        }
        
        body.scrolled .ys-hd-pc {
            background: rgba(255,255,255,0.96);
            backdrop-filter: blur(8px);
            box-shadow: 0 2px 15px rgba(0,0,0,0.08);
            border-bottom: 1px solid rgba(0,0,0,0.05);
        }
        
        .mod-head {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .head-logo-link img {
            height: 48px;
            transition: opacity 0.25s;
        }
        
        .head-logo-link img:last-child {
            display: none;
        }
        
        body.scrolled .head-logo-link img:first-child {
            display: none;
        }
        
        body.scrolled .head-logo-link img:last-child {
            display: block;
        }
        
        /* 导航栏核心：让导航列表和“联系我们”紧凑相连 */
        .head-other {
            display: flex;
            align-items: center;
            gap: 24px;  /* 整体间距适中，使联系我们按钮紧贴导航列表 */
        }
        
        .head-nav {
            display: flex;
            list-style: none;
            gap: 28px;
            margin: 0;
            padding: 0;
        }
        
        .head-nav-item a {
            text-decoration: none;
            color: white;
            font-weight: 500;
            font-size: 1rem;
            transition: color 0.25s;
            letter-spacing: 0.5px;
        }
        
        body.scrolled .head-nav-item a {
            color: #1a1f2e;
        }
        
        .head-nav-item a:hover {
            color: #00e0ff;
        }
        
        /* “联系我们”按钮样式 — 与导航栏距离更近，视觉上紧密 */
        .head-other-more {
            margin-left: 0;
            position: relative;
        }
        
        .head-other-more a {
            background: linear-gradient(135deg, #00e0ff, #0088ff);
            padding: 8px 24px;
            border-radius: 40px;
            color: white;
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.25s;
            display: inline-block;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            white-space: nowrap;
        }
        
        .head-other-more a:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 14px rgba(0,160,255,0.35);
            background: linear-gradient(135deg, #00f0ff, #0095ff);
        }
        
        /* 响应式：手机端隐藏导航列表，保留按钮紧凑 */
        @media (max-width: 1100px) {
            .head-nav {
                gap: 18px;
            }
            .head-other {
                gap: 16px;
            }
            .head-nav-item a {
                font-size: 0.9rem;
            }
        }
        
        @media (max-width: 900px) {
            .head-nav {
                display: none;
            }
            .head-other {
                justify-content: flex-end;
            }
        }
        
        @media (max-width: 768px) {
            .ys-hd-pc {
                padding: 12px 20px;
            }
            .head-logo-link img {
                height: 38px;
            }
            .banner_swiper .text_box {
                top: 38%;
                left: 50%;
            }
            .banner_swiper .text_box h3 {
                font-size: 1rem;
                letter-spacing: 1px;
            }
            .banner_swiper .text_box img {
                max-width: 140px;
                
                filter: drop-shadow(4px 4px 6px rgba(255, 255, 255, 0.9));
            }
            .banner_thumber .swiper-slide {
                padding: 2px 2px;
            }
            .banner_thumber .swiper-slide p {
                font-size: 0.7rem;
                white-space: normal;
            }
            .nav-dots {
                right: 15px;
            }
            .screen-content h2 {
                font-size: 2rem;
            }
            .screen-content p {
                font-size: 1rem;
            }
        }
        
        /* 增加微光效，提升科技感 */
        .glow-text {
            text-shadow: 0 0 5px rgba(0,224,255,0.3);
        }