/* 基础重置 */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html,
    body {
      height: 100%;
      overflow: hidden;
      font-family: PingFangSC-Regular, Roboto, Helvetica Neue, Helvetica, Tahoma, Arial, PingFang SC-Light, Microsoft YaHei;
    }

    /* 核心容器：垂直排列三个全屏区块 */
    .fullpage-container {
      height: 300vh;
      width: 100%;
      position: relative;
      transition: transform 1.25s ease-in-out;
    }

    /* 每个区块全屏样式 */
    .section {
      width: 100%;
      height: 100vh;
      position: relative;
      overflow: hidden;
      box-shadow: 0 0 20px rgba(0, 0, 0, 0.05);
      z-index: 1;
    }

    /* 当前激活的屏幕（视觉焦点） */
    .section.active {
      z-index: 2;
      box-shadow: 0 0 30px rgba(0, 0, 0, 0.1);
    }

    /* 导航栏 - 顶部弹出动画 */
    .nav {
      position: fixed;
      top: 0;
      left: 50%;
      transform: translateX(-50%) translateY(-100%);
      width: 50vw;
      max-width: 600px;
      min-width: 300px;
      z-index: 100;
      background: rgba(22, 22, 22, 0.95);
      border-radius: 50px;
      box-shadow: 0 2px 16px -3px rgba(0, 0, 0, 0.3);
      backdrop-filter: blur(10px);
      animation: navPopIn 0.8s cubic-bezier(0.33, 1, 0.68, 1) forwards;
      transition: all 0.5s ease-in-out;
    }

    /* 浅色导航栏样式 */
    .nav.light {
      background: rgba(255, 255, 255, 0.95);
      box-shadow: 0 2px 16px -3px rgba(0, 0, 0, 0.1);
    }

    @keyframes navPopIn {
      from {
        transform: translateX(-50%) translateY(-100%);
      }

      to {
        transform: translateX(-50%) translateY(20px);
      }
    }

    .nav-content {
      width: 90%;
      height: 50px;
      margin: 0 auto;
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    /* 各屏背景样式 */
    .section1 {
      background-color: #F5F5F7;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 0 5%;
    }

    .section2 {
      background-image: linear-gradient(180deg, #02162A 0%, #00001e 100%);
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 0 5%;
    }

    .section3 {
      background-color: #1C1C1F;
      display: flex;
      flex-direction: column;
      justify-content: center;
      padding: 0 5%;
    }

    /* 滚动指示器 */
    .scroll-indicator {
      position: fixed;
      right: 30px;
      top: 50%;
      transform: translateY(-50%);
      z-index: 90;
      display: flex;
      flex-direction: column;
      gap: 15px;
    }

    .indicator-dot {
      width: 12px;
      height: 12px;
      border-radius: 50%;
      background-color: rgba(255, 255, 255, 0.3);
      cursor: pointer;
      transition: all 0.5s ease-in-out;
    }

    .indicator-dot.active {
      background-color: #fff;
      transform: scale(1.3);
      box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    }

    /* 第一屏内容布局 */
    .first-stack {
      display: flex;
      flex-wrap: wrap;
      justify-content: space-between;
      align-items: center;
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      flex: 1;
      padding: 80px 0;
      gap: 30px;
    }

    .left-Introduce {
      width: clamp(300px, 50%, 550px);
      position: relative;
      z-index: 1;
    }

    .right-stack {
      width: clamp(250px, 45%, 600px);
      display: flex;
      justify-content: center;
      align-items: center;
      overflow: visible;
    }

    .banner-img {
      width: 100%;
      height: auto;
      max-height: 500px;
      object-fit: contain;
      animation: floating 4s ease-in-out infinite;
    }

    /* 滚动时暂停浮动动画 */
    .fullpage-container.scrolling .banner-img {
      animation-play-state: paused;
    }

    /* 动画关键帧合集 */
    @keyframes textPopIn {
      from {
        opacity: 0;
        transform: translateY(30px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes buttonPopIn {
      from {
        opacity: 0;
        transform: translateY(50px);
      }

      to {
        opacity: 1;
        transform: translateY(0);
      }
    }

    @keyframes slideOut {
      from {
        transform: scale(1);
        opacity: 1;
      }

      to {
        transform: scale(1.25);
        opacity: 0;
      }
    }

    @keyframes slideIn {
      from {
        transform: scale(1.25);
        opacity: 0.6;
      }

      to {
        transform: scale(1);
        opacity: 1;
      }
    }

    @keyframes floating {
      0% {
        transform: translateY(0px);
      }

      50% {
        transform: translateY(10px);
      }

      100% {
        transform: translateY(0px);
      }
    }

    @keyframes fallIn {
      from {
        transform: translateY(-50px);
        opacity: 0;
      }

      to {
        transform: translateY(0);
        opacity: 1;
      }
    }

    @keyframes slideLeftIn {
      from {
        transform: translateX(-100px);
        opacity: 0;
      }

      to {
        transform: translateX(0);
        opacity: 1;
      }
    }

    @keyframes slideRightIn {
      from {
        transform: translateX(100px);
        opacity: 0;
      }

      to {
        transform: translateX(0);
        opacity: 1;
      }
    }

    @keyframes slideLeftOut {
      from {
        transform: translateX(0);
        opacity: 1;
      }

      to {
        transform: translateX(-100px);
        opacity: 0;
      }
    }

    @keyframes slideRightOut {
      from {
        transform: translateX(0);
        opacity: 1;
      }

      to {
        transform: translateX(100px);
        opacity: 0;
      }
    }

    @keyframes typingCursor {

      from,
      to {
        border-color: transparent;
      }

      50% {
        border-color: #fff;
      }
    }

    /* 第一屏文字样式 */
    .section1 .title-group {
      font-size: clamp(40px, 10vw, 70px);
      font-weight: bold;
      color: #00001e;
      line-height: 1.2;
      font-family: system-ui;
      opacity: 0;
      animation: textPopIn 0.8s cubic-bezier(0.33, 1, 0.68, 1) forwards;
      transition: none;
    }

    .section1 .discription {
      opacity: 0;
      animation: textPopIn 0.8s cubic-bezier(0.33, 1, 0.68, 1) 0.1s forwards;
      transition: none;
    }

    .discription-text {
      display: block;
      font-size: clamp(18px, 4vw, 28px);
      color: #00001e;
      line-height: 1.5;
      margin-top: 20px;
      font-weight: 500;
    }

    /* 滚动动画触发类 */
    .section1 .title-group.slide-out,
    .section1 .discription.slide-out {
      animation: slideOut 1.25s ease-in-out forwards !important;
    }

    .section1 .title-group.slide-in,
    .section1 .discription.slide-in {
      animation: slideIn 1.25s ease-in-out forwards !important;
    }

    /* 按钮样式 */
    .first-stack-links {
      display: flex;
      flex-wrap: wrap;
      gap: 12px;
      margin-top: 40px;
      opacity: 0;
      animation: buttonPopIn 0.8s cubic-bezier(0.33, 1, 0.68, 1) 0.4s forwards;
    }

    .about-button {
      padding: 0 clamp(20px, 6vw, 36px);
      background: #1C1C1F;
      color: #fff;
      border-radius: 29px;
      box-shadow: 0px 12px 12px -9px rgba(0, 0, 0, 0.29);
      transition: ease-in-out 0.3s;
      white-space: nowrap;
      align-items: center;
      justify-content: center;
      height: clamp(40px, 8vw, 48px);
      font-size: clamp(14px, 3vw, 18px);
      display: flex;
      text-decoration: none;
    }

    .about-button:hover {
      background: #4375ff;
      box-shadow: 0px 12px 12px -9px rgba(67, 117, 255, 0.3);
    }

    .about-button.social-button {
      padding: 0 clamp(12px, 4vw, 18px);
    }

    .about-button.social-button i {
      font-size: clamp(18px, 4vw, 20px);
      line-height: 1;
    }

    /* 个人简介样式 */
    .avatar-discription {
      display: flex;
      align-items: center;
      padding: clamp(12px, 3vw, 16px) clamp(16px, 4vw, 24px);
      background: #fff;
      border-radius: 30px;
      line-height: 1.5;
      max-width: 95%;
      width: fit-content;
      border: 1px solid #e3e8f7;
      box-shadow: 0 8px 16px -4px #2c2d300c;
      position: absolute;
      bottom: clamp(20px, 5vw, 40px);
      left: 50%;
      transform: translateX(-50%);
      z-index: 10;
      height: auto;
      gap: clamp(8px, 2vw, 12px);
      flex-wrap: wrap;
      justify-content: center;
    }

    .avatar-discription-text {
      font-size: clamp(12px, 2.5vw, 14px);
      max-width: clamp(200px, 70%, 500px);
      color: #00001e;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .avatar-image {
      width: clamp(36px, 8vw, 40px);
      height: clamp(36px, 8vw, 40px);
      border-radius: 50%;
      border: 2px solid #fff;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
      object-fit: cover;
      display: block;
      flex-shrink: 0;
    }

    .avatar-name {
      font-size: clamp(13px, 3vw, 15px);
      font-weight: 500;
      color: #00001e;
    }

    /* 第二屏内容样式 */
    .product-banner {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      text-align: center;
      padding-top: 80px;
      padding-bottom: 40px;
    }

    .section2 .tips {
      color: #e5a80d;
      font-size: 14px;
      text-transform: uppercase;
      letter-spacing: 1px;
      text-shadow: 0 0 5px rgba(229, 168, 13, 0.3);
    }

    .section2 .title {
      font-size: clamp(40px, 8vw, 56px);
      color: #fff;
      font-weight: bold;
      line-height: 1.2;
      margin-top: 12px;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }

    .banner-discription-group {
      display: flex;
      flex-direction: column;
      align-items: center;
      opacity: 0.9;
      margin: 24px 0 32px 0;
    }

    .section2 .description {
      font-size: clamp(15px, 3vw, 17px);
      color: #fff;
      text-align: center;
      margin-bottom: 12px;
      max-width: 800px;
      text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
    }

    .link-group {
      margin-bottom: 40px;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
      gap: 16px;
    }

    .primary-button {
      padding: 12px 32px;
      background: #fff;
      color: #00001e;
      border-radius: 26px;
      transition: ease-in-out 0.3s;
      white-space: nowrap;
      font-weight: 500;
      text-decoration: none;
      box-shadow: 0 4px 15px rgba(255, 255, 255, 0.2);
    }

    .primary-button:hover {
      background: #4375ff;
      color: #fff;
    }

    .second-link {
      color: #fff;
      opacity: 0.8;
      font-size: 15px;
      transition: ease-in-out 0.3s;
      text-decoration: none;
      text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
    }

    .second-link:hover {
      opacity: 1;
    }

    .banner-pic {
      width: 100%;
      max-width: 968px;
      margin: 0 auto;
      margin-top: 40px;
      filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
    }

    .banner-pic-img {
      width: 100%;
      height: auto;
      max-height: 380px;
      object-fit: contain;
    }

    /* 第三屏内容样式 - 留言板 */
    .message-board-content {
      width: 100%;
      max-width: 800px;
      margin: 0 auto;
      background-color: rgba(255, 255, 255, 0.05);
      padding: 60px 30px;
      border-radius: 12px;
      text-align: center;
      backdrop-filter: blur(5px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }

    .section3 .title {
      font-size: clamp(32px, 7vw, 40px);
      color: #fff;
      font-weight: bold;
      margin-bottom: 20px;
      text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
    }

    .section3 .discription-text {
      font-size: clamp(16px, 3vw, 18px);
      color: #fff;
      opacity: 0.9;
      margin-top: 0;
      line-height: 24px;
      text-shadow: 0 1px 5px rgba(0, 0, 0, 0.2);
    }

    /* 留言表单样式 */
    .message-form {
      margin-top: 40px;
      display: flex;
      flex-direction: column;
      gap: 20px;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      text-align: left;
    }

    .form-label {
      color: #fff;
      font-size: 14px;
      margin-bottom: 8px;
      font-weight: 500;
    }

    .form-input,
    .form-textarea {
      background: rgba(255, 255, 255, 0.1);
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 8px;
      padding: 12px 16px;
      color: #fff;
      font-size: 15px;
      transition: all 0.3s ease;
      font-family: inherit;
    }

    .form-input:focus,
    .form-textarea:focus {
      outline: none;
      border-color: #4375ff;
      background: rgba(255, 255, 255, 0.15);
      box-shadow: 0 0 0 2px rgba(67, 117, 255, 0.2);
    }

    .form-input::placeholder,
    .form-textarea::placeholder {
      color: rgba(255, 255, 255, 0.5);
    }

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

    .submit-button {
      margin-top: 10px;
      padding: 12px 32px;
      background: #4375ff;
      color: #fff;
      border: none;
      border-radius: 26px;
      font-size: 16px;
      font-weight: 500;
      cursor: pointer;
      transition: all 0.3s ease;
      box-shadow: 0 4px 15px rgba(67, 117, 255, 0.3);
    }

    .submit-button:hover {
      background: #5c8aff;
      transform: translateY(-2px);
      box-shadow: 0 6px 20px rgba(67, 117, 255, 0.4);
    }

    .submit-button:active {
      transform: translateY(0);
    }

    /* 窄底栏 */
    .footer {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      z-index: 95;
      padding: 10px 0;
      background: rgba(0, 0, 0, 0.3);
      backdrop-filter: blur(5px);
      transition: all 0.3s ease;
    }

    .footer.light {
      background: rgba(255, 255, 255, 0.8);
    }

    .footer-content {
      width: 90%;
      max-width: 1200px;
      margin: 0 auto;
      display: flex;
      justify-content: center;
      align-items: center;
      flex-wrap: wrap;
    }

    .footer .info {
      font-size: clamp(10px, 2.5vw, 11px);
      margin: 0 8px 4px;
      opacity: 0.9;
      font-weight: 500;
      color: #fff;
      text-decoration: none;
    }

    .footer.light .info {
      color: #333;
    }

    /* 导航菜单样式 */
    .site-logo {
      display: flex;
      align-items: center;
      text-decoration: none;
    }

    .site-logo-img {
      width: 25px;
      height: 25px;
      border-radius: 50%;
    }

    .site-name {
      color: #fff;
      font-size: 14px;
      margin-left: 8px;
      transition: color 0.5s ease-in-out;
    }

    .nav-item {
      color: #fff;
      opacity: 0.8;
      transition: all 0.3s ease-in-out;
      font-size: 14px;
      margin: 0 4px;
      padding: 6px 12px;
      border-radius: 16px;
      text-decoration: none;
    }

    .nav-item:hover {
      opacity: 1;
      background: rgba(255, 255, 255, 0.1);
    }

    .nav-menu {
      display: none;
      color: #fff;
      font-size: 20px;
      cursor: pointer;
      transition: color 0.5s ease-in-out;
    }

    /* 浅色导航栏样式 */
    .nav.light .site-name,
    .nav.light .nav-item,
    .nav.light .nav-menu {
      color: #333;
    }

    .nav.light .nav-item:hover {
      background: rgba(0, 0, 0, 0.1);
    }

    /* 第二屏动画样式 - 滑轨效果 */
    .section2 .section2-tips {
      opacity: 0;
      transform: translateY(-50px);
      display: inline-block;
    }

    .section2 .section2-tips.animate-in {
      animation: fallIn 1s ease-in-out forwards;
    }

    .section2 .section2-tips.animate-out {
      animation: fallOut 1s ease-in-out forwards;
    }

    @keyframes fallOut {
      from {
        transform: translateY(0);
        opacity: 1;
      }

      to {
        transform: translateY(-50px);
        opacity: 0;
      }
    }

    .section2 .section2-title-left {
      opacity: 0;
      transform: translateX(-100px);
      display: inline-block;
    }

    .section2 .section2-title-left.animate-in {
      animation: slideLeftIn 1s ease-in-out forwards;
    }

    .section2 .section2-title-left.animate-out {
      animation: slideLeftOut 1s ease-in-out forwards;
    }

    .section2 .section2-title-right {
      opacity: 0;
      transform: translateX(100px);
      display: inline-block;
    }

    .section2 .section2-title-right.animate-in {
      animation: slideRightIn 1s ease-in-out forwards;
    }

    .section2 .section2-title-right.animate-out {
      animation: slideRightOut 1s ease-in-out forwards;
    }

    .section2 .section2-typing {
      display: inline-block;
      overflow: hidden;
      white-space: nowrap;
      max-width: 0;
      border-right: 2px solid transparent;
      opacity: 0;
    }

    .section2 .section2-typing.animate-in {
      animation: typingCursor 1.5s infinite;
      border-right: 2px solid #fff;
      opacity: 1;
    }

    .section2 .section2-typing.animate-out {
      opacity: 0;
      transition: opacity 0.5s ease-in-out;
    }

    .section2 .section2-description {
      opacity: 0;
    }

    .section2 .section2-description.animate-in {
      opacity: 1;
      animation: fadeIn 0.5s ease-in-out forwards;
    }

    .section2 .section2-description.animate-out {
      opacity: 0;
      transition: opacity 0.5s ease-in-out;
    }

    @keyframes fadeIn {
      from {
        opacity: 0;
      }

      to {
        opacity: 1;
      }
    }

    /* 新增标题分隔符 */
    .title.chinese::after {
      content: "-";
      color: #888;
      margin: 0 2px;
    }

    /* 移动端适配 */
    @media screen and (max-width: 768px) {
      .nav {
        width: 85vw;
        animation: navPopInMobile 0.8s cubic-bezier(0.33, 1, 0.68, 1) forwards;
      }

      @keyframes navPopInMobile {
        from {
          transform: translateX(-50%) translateY(-100%);
        }

        to {
          transform: translateX(-50%) translateY(15px);
        }
      }

      .nav-center {
        display: none;
      }

      .nav-menu {
        display: block;
      }

      .first-stack {
        padding: 60px 0;
      }

      .avatar-discription-text {
        white-space: normal;
        overflow: visible;
        text-overflow: unset;
      }
    }

    @media screen and (max-width: 480px) {
      .friend-links .about-button {
        width: 100%;
      }
    }

    /* 大屏幕优化 */
    @media screen and (min-width: 1200px) {
      .first-stack {
        justify-content: space-around;
      }

      .right-stack {
        width: 45%;
      }

      .left-Introduce {
        width: 50%;
      }
    }