<style>
        /* ===== 全局重置 ===== */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        html,
        body {
            width: 100%;
            height: 100%;
            overflow: hidden;
            font-family: 'Segoe UI', 'PingFang SC', Roboto, 'Helvetica Neue', sans-serif;
        }

        /* ===== 滚动容器 ===== */
        .scroll-container {
            width: 100%;
            height: 100%;
            transition: transform 0.85s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            will-change: transform;
        }

        /* ===== 每一屏 ===== */
        .section {
            width: 100%;
            height: 100vh;
            display: flex;
                z-index: 1;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 0px 0px;
            position: relative;
            overflow: hidden;
            user-select: none;
        }

        /* 各屏背景 */
        .section-1 {
            background: linear-gradient(135deg, #0f0c29, #302b63, #24243e);
        }
        .section-2 {
            background: linear-gradient(135deg, #134e5e, #71b280);
        }
        .section-3 {
            /* background: linear-gradient(135deg, #2d1b4e, #e44d26); */
        }
        .section-4 {
            background: linear-gradient(135deg, #1a1a2e, #16213e, #0f3460);
        }
        .section-5 {
            background: linear-gradient(135deg, #2c3e50, #3498db);
        }

        /* ===== 内容包装 ===== */
        .section .content-wrapper {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 12px;
            /* 初始状态：各元素隐藏或偏移，由具体动画类控制 */
        }

        /* 每个内容子项默认透明且偏移，等待动画触发 */
        .section .content-wrapper > * {
            opacity: 0;
            transform: translateY(30px) scale(0.95);
            transition: none; /* 使用动画，不使用过渡 */
        }

        /* ----- 各页面独特的动画关键帧 ----- */
        /* 页面1：图标弹跳 + 文字左移 */
        @keyframes page1Icon {
            0% { opacity: 0; transform: scale(0.3) rotate(-20deg); }
            60% { opacity: 1; transform: scale(1.2) rotate(5deg); }
            100% { opacity: 1; transform: scale(1) rotate(0); }
        }
        @keyframes page1TextLeft {
            0% { opacity: 0; transform: translateX(-80px) scale(0.8); }
            100% { opacity: 1; transform: translateX(0) scale(1); }
        }

        /* 页面2：从右侧滑入 + 弹性 */
        @keyframes page2SlideRight {
            0% { opacity: 0; transform: translateX(100px) scale(0.9); }
            70% { opacity: 1; transform: translateX(-10px) scale(1.02); }
            100% { opacity: 1; transform: translateX(0) scale(1); }
        }
        @keyframes page2FadeUp {
            0% { opacity: 0; transform: translateY(40px); }
            100% { opacity: 1; transform: translateY(0); }
        }

        /* 页面3：缩放 + 旋转入场 */
        @keyframes page3ZoomRotate {
            0% { opacity: 0; transform: scale(0.2) rotate(-180deg); }
            80% { opacity: 1; transform: scale(1.05) rotate(3deg); }
            100% { opacity: 1; transform: scale(1) rotate(0); }
        }
        @keyframes page3FadeIn {
            0% { opacity: 0; transform: scale(0.8); }
            100% { opacity: 1; transform: scale(1); }
        }

        /* 页面4：从底部上升 + 轻微摇摆 */
        @keyframes page4BottomUp {
            0% { opacity: 0; transform: translateY(80px); }
            100% { opacity: 1; transform: translateY(0); }
        }
        @keyframes page4Swing {
            0% { opacity: 0; transform: translateY(60px) rotate(-8deg); }
            100% { opacity: 1; transform: translateY(0) rotate(0); }
        }

        /* 页面5：渐变 + 上浮（带光晕） */
        @keyframes page5GlowUp {
            0% { opacity: 0; transform: translateY(50px) scale(0.9); filter: blur(4px); }
            100% { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
        }
        @keyframes page5FadeIn {
            0% { opacity: 0; }
            100% { opacity: 1; }
        }

        /* ===== 为每个页面分配动画类 ===== */
        /* 页面1 动画分配 */
        .section-1.active .content-wrapper .icon {
            animation: page1Icon 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
            animation-delay: 0.1s;
        }
        .section-1.active .content-wrapper h1 {
            animation: page1TextLeft 0.8s ease-out forwards;
            animation-delay: 0.25s;
        }
        .section-1.active .content-wrapper .subtitle {
            animation: page1TextLeft 0.8s ease-out forwards;
            animation-delay: 0.4s;
        }
        .section-1.active .content-wrapper .description {
            animation: page1TextLeft 0.8s ease-out forwards;
            animation-delay: 0.55s;
        }

        /* 页面2 动画分配 */
        .section-2.active .content-wrapper .icon {
            animation: page2SlideRight 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
            animation-delay: 0.1s;
        }
        .section-2.active .content-wrapper h1 {
            animation: page2FadeUp 0.7s ease-out forwards;
            animation-delay: 0.3s;
        }
        .section-2.active .content-wrapper .subtitle {
            animation: page2FadeUp 0.7s ease-out forwards;
            animation-delay: 0.5s;
        }
        .section-2.active .content-wrapper .description {
            animation: page2FadeUp 0.7s ease-out forwards;
            animation-delay: 0.7s;
        }

        /* 页面3 动画分配 */
        .section-3.active .content-wrapper .icon {
            animation: page3ZoomRotate 1s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
            animation-delay: 0.1s;
        }
        .section-3.active .content-wrapper h1 {
            animation: page3FadeIn 0.8s ease-out forwards;
            animation-delay: 0.3s;
        }
        .section-3.active .content-wrapper .subtitle {
            animation: page3FadeIn 0.8s ease-out forwards;
            animation-delay: 0.5s;
        }
        .section-3.active .content-wrapper .description {
            animation: page3FadeIn 0.8s ease-out forwards;
            animation-delay: 0.7s;
        }

        /* 页面4 动画分配 */
        .section-4.active .content-wrapper .icon {
            animation: page4Swing 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
            animation-delay: 0.1s;
        }
        .section-4.active .content-wrapper h1 {
            animation: page4BottomUp 0.8s ease-out forwards;
            animation-delay: 0.3s;
        }
        .section-4.active .content-wrapper .subtitle {
            animation: page4BottomUp 0.8s ease-out forwards;
            animation-delay: 0.5s;
        }
        .section-4.active .content-wrapper .description {
            animation: page4BottomUp 0.8s ease-out forwards;
            animation-delay: 0.7s;
        }

        /* 页面5 动画分配 */
        .section-5.active .content-wrapper .icon {
            animation: page5GlowUp 0.9s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
            animation-delay: 0.1s;
        }
        .section-5.active .content-wrapper h1 {
            animation: page5FadeIn 0.7s ease-out forwards;
            animation-delay: 0.3s;
        }
        .section-5.active .content-wrapper .subtitle {
            animation: page5FadeIn 0.7s ease-out forwards;
            animation-delay: 0.5s;
        }
        .section-5.active .content-wrapper .description {
            animation: page5FadeIn 0.7s ease-out forwards;
            animation-delay: 0.7s;
        }

        /* ===== 页面编号角标 ===== */
        .section .page-number {
            position: absolute;
            bottom: 40px;
            right: 50px;
            font-size: 14px;
            font-weight: 300;
            opacity: 0.25;
            letter-spacing: 4px;
        }

        /* ===== 滚动提示 ===== */
        .scroll-hint {
            position: absolute;
            bottom: 100px;
            left: 50%;
            transform: translateX(-50%);
            color: rgba(255, 255, 255, 0.3);
            font-size: 13px;
            font-weight: 300;
            letter-spacing: 2px;
            animation: bounceDown 2.4s ease-in-out infinite;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .scroll-hint .arrow {
            display: block;
            width: 20px;
            height: 20px;
            border-right: 2px solid rgba(255, 255, 255, 0.25);
            border-bottom: 2px solid rgba(255, 255, 255, 0.25);
            transform: rotate(45deg);
            opacity: 0.5;
        }

        @keyframes bounceDown {
            0%,
            100% {
                transform: translateX(-50%) translateY(0);
                opacity: 0.4;
            }
            50% {
                transform: translateX(-50%) translateY(12px);
                opacity: 0.9;
            }
        }

        /* ===== 导航点 (保持不变) ===== */
        .nav-dots {
            position: fixed;
            right: 36px;
            top: 50%;
            transform: translateY(-50%);
            display: flex;
            flex-direction: column;
            gap: 18px;
            z-index: 1000;
            padding: 16px 8px;
            border-radius: 40px;
            background: rgba(255, 255, 255, 0.08);
            backdrop-filter: blur(6px);
            -webkit-backdrop-filter: blur(6px);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        }

        .dot {
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.35);
            cursor: pointer;
            transition: all 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
            position: relative;
            border: none;
            outline: none;
            padding: 0;
            flex-shrink: 0;
        }

        .dot:hover {
            background: rgba(255, 255, 255, 0.7);
            transform: scale(1.2);
        }

        .dot.active {
            background: #fff;
            transform: scale(1.5);
            box-shadow: 0 0 24px rgba(255, 255, 255, 0.5), 0 0 60px rgba(255, 255, 255, 0.15);
        }

        .dot .label {
            position: absolute;display: none;
            right: calc(100% + 20px);
            top: 50%;
            transform: translateY(-50%) scale(0.85);
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.3s ease, transform 0.3s ease;
            letter-spacing: 0.5px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .dot .label::after {
            content: '';
            position: absolute;
            left: 100%;
            top: 50%;
            transform: translateY(-50%);
            border: 6px solid transparent;
            border-left-color: rgba(0, 0, 0, 0.7);
        }

        .dot:hover .label,
        .dot.active .label {
            opacity: 1;
            transform: translateY(-50%) scale(1);
        }

        /* ===== 底部页码 ===== */
        .page-indicator {
            position: fixed;
            bottom: 40px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 999;
            color: rgba(255, 255, 255, 0.4);
            font-size: 14px;
            font-weight: 300;
            letter-spacing: 3px;
            background: rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(4px);
            -webkit-backdrop-filter: blur(4px);
            padding: 8px 24px;
            border-radius: 30px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            font-variant-numeric: tabular-nums;
            transition: opacity 0.4s ease;
        }

        .page-indicator span {
            font-weight: 500;
            color: rgba(255, 255, 255, 0.7);
        }

        /* ===== 响应式微调 ===== */
        @media (max-width: 768px) {
            .section {
                padding: 30px 24px;
            }
            .section h1 {
                font-size: 32px;
            }
            .section .subtitle {
                font-size: 17px;
            }
            .section .icon {
                font-size: 48px;
                margin-bottom: 8px;
            }
            .section .description {
                font-size: 15px;
            }
            .nav-dots {
                right: 16px;
                gap: 14px;
                padding: 12px 6px;
            }
            .dot {
                width: 12px;
                height: 12px;
            }
            .dot.active {
                transform: scale(1.4);
            }
            .dot .label {
                display: none;
            }
            .page-indicator {
                font-size: 12px;
                padding: 6px 16px;
                bottom: 24px;
            }
            .section .page-number {
                right: 24px;
                bottom: 24px;
                font-size: 12px;
            }
            .scroll-hint {
                bottom: 70px;
            }
        }

        @media (max-width: 480px) {
            .section h1 {
                font-size: 26px;
            }
            .section .subtitle {
                font-size: 15px;
            }
            .section .icon {
                font-size: 40px;
            }
            .nav-dots {
                right: 12px;
                gap: 12px;
                padding: 10px 5px;
            }
            .dot {
                width: 10px;
                height: 10px;
            }
            .dot.active {
                transform: scale(1.3);
            }
        }

        /* ===== 禁用滚动条 ===== */
        ::-webkit-scrollbar {
            display: none;
        }