:root {
    --bg-color: #FFD700;
    --text-color: #000000;
    --main-pink: #FF1493;
    --border-width: 4px;
    --shadow-offset: 8px;
    --font-main: 'Helvetica Neue', Helvetica, Arial, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  }

  * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.5;
    overflow-x: hidden;
  }

  a {
    color: var(--text-color);
    text-decoration: none;
  }

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

  /* 头部与导航 */
  header {
    border-bottom: var(--border-width) solid var(--text-color);
    background-color: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    max-width: 1200px;
    margin: 0 auto;
  }

  .logo-group {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 24px;
    font-weight: 900;
    letter-spacing: -1px;
  }

  .logo-group img {
    height: 36px;
    width: auto;
    border: 2px solid var(--text-color);
  }

  .nav-links {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    white-space: nowrap;
    -webkit-overflow-scrolling: touch;
  }

  .nav-links a {
    font-weight: 700;
    font-size: 16px;
    padding: 8px 12px;
    border: 2px solid transparent;
    transition: all 0.2s;
  }

  .nav-links a:hover {
    border-color: var(--text-color);
    background-color: #fff;
  }

  /* 按钮样式 */
  .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--main-pink);
    color: #fff;
    font-weight: 800;
    font-size: 18px;
    padding: 12px 24px;
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    transition: transform 0.1s, box-shadow 0.1s;
    cursor: pointer;
    text-align: center;
  }

  .btn:hover {
    transform: translate(4px, 4px);
    box-shadow: 4px 4px 0 var(--text-color);
  }
  
  .btn:active {
    transform: translate(8px, 8px);
    box-shadow: 0px 0px 0 var(--text-color);
  }

  /* 标题样式 */
  h1, h2, h3 {
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -1px;
  }

  h1 {
    font-size: clamp(40px, 8vw, 72px);
    margin-bottom: 24px;
  }

  h2 {
    font-size: clamp(32px, 5vw, 48px);
    margin-bottom: 30px;
    border-bottom: var(--border-width) solid var(--text-color);
    padding-bottom: 10px;
    display: inline-block;
  }

  h3 {
    font-size: 24px;
    margin-bottom: 10px;
  }

  /* 区块通用 */
  section {
    padding: 60px 0;
    border-bottom: var(--border-width) solid var(--text-color);
  }

  /* Hero 区域 */
  .hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 80px 0;
  }

  .hero-text p {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 30px;
    max-width: 480px;
  }

  .hero-actions {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }

  .hero-image {
    width: 100%;
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    background: #fff;
  }
  .hero-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
  }

  /* 滚动评论 */
  .ticker-wrap {
    background-color: #000;
    color: var(--bg-color);
    padding: 12px 0;
    border-bottom: var(--border-width) solid var(--text-color);
    overflow: hidden;
    white-space: nowrap;
  }
  
  .ticker {
    display: inline-block;
    animation: ticker 40s linear infinite;
    font-weight: 700;
    font-size: 16px;
  }

  .ticker span {
    margin: 0 30px;
  }

  @keyframes ticker {
    0% { transform: translate3d(0, 0, 0); }
    100% { transform: translate3d(-50%, 0, 0); }
  }

  /* 网格卡片 */
  .grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }

  .card {
    background: #fff;
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    display: flex;
    flex-direction: column;
    transition: transform 0.2s;
  }

  .card:hover {
    transform: translateY(-4px);
  }

  .card-img {
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
    border-bottom: var(--border-width) solid var(--text-color);
  }

  .card-content {
    padding: 20px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
  }

  .card-tag {
    display: inline-block;
    background-color: var(--main-pink);
    color: #fff;
    padding: 4px 8px;
    font-weight: 800;
    font-size: 12px;
    border: 2px solid var(--text-color);
    align-self: flex-start;
    margin-bottom: 12px;
  }

  .card p {
    font-weight: 500;
    font-size: 15px;
    color: #333;
    margin-top: auto;
  }

  /* 日历列表 */
  .list-group {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
  .list-item {
    display: flex;
    background: #fff;
    border: var(--border-width) solid var(--text-color);
    box-shadow: 4px 4px 0 var(--text-color);
    padding: 20px;
    gap: 20px;
    align-items: center;
  }
  .list-date {
    font-weight: 900;
    font-size: 24px;
    background: var(--bg-color);
    border: 2px solid var(--text-color);
    padding: 10px;
    line-height: 1;
    min-width: 80px;
    text-align: center;
  }
  .list-info h3 {
    font-size: 20px;
    margin-bottom: 5px;
  }
  .list-info p {
    font-weight: 500;
    font-size: 15px;
  }

  /* 流程步骤 */
  .steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
  }
  .step-item {
    background: var(--main-pink);
    color: #fff;
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    padding: 30px 20px;
    position: relative;
  }
  .step-num {
    font-size: 48px;
    font-weight: 900;
    line-height: 1;
    margin-bottom: 15px;
    color: var(--text-color);
    -webkit-text-stroke: 2px #fff;
  }
  .step-item h3 {
    color: var(--text-color);
    margin-bottom: 10px;
  }
  .step-item p {
    font-weight: 600;
    font-size: 16px;
    color: var(--text-color);
  }

  /* 排行榜 */
  .rank-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }
  .rank-item {
    display: flex;
    background: #fff;
    border: var(--border-width) solid var(--text-color);
    align-items: stretch;
  }
  .rank-num {
    background: var(--text-color);
    color: var(--bg-color);
    font-size: 32px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    flex-shrink: 0;
  }
  .rank-img {
    width: 120px;
    object-fit: cover;
    border-right: var(--border-width) solid var(--text-color);
    flex-shrink: 0;
  }
  .rank-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  .rank-info h3 {
    font-size: 22px;
    margin-bottom: 4px;
  }
  .rank-info p {
    font-weight: 600;
    font-size: 14px;
    color: #555;
  }

  /* 教程 */
  .tutorial-box {
    background: #fff;
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    padding: 40px;
  }
  .tutorial-box ol {
    padding-left: 20px;
    font-size: 18px;
    font-weight: 600;
  }
  .tutorial-box li {
    margin-bottom: 15px;
  }

  /* FAQ */
  .faq-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
  }
  .faq-item {
    background: #fff;
    border: var(--border-width) solid var(--text-color);
    padding: 24px;
  }
  .faq-item h3 {
    font-size: 20px;
    margin-bottom: 12px;
    display: flex;
    gap: 10px;
  }
  .faq-item h3::before {
    content: "Q";
    background: var(--main-pink);
    color: #fff;
    width: 28px;
    height: 28px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--text-color);
    flex-shrink: 0;
  }
  .faq-item p {
    font-weight: 500;
    font-size: 15px;
    padding-left: 38px;
  }

  /* 底部 */
  footer {
    padding: 40px 0;
    font-size: 13px;
    color: #555;
    text-align: center;
    background-color: var(--bg-color);
  }
  footer p {
    margin-bottom: 8px;
  }
  footer a {
    color: #555;
    text-decoration: underline;
  }
  footer a:hover {
    color: var(--text-color);
  }

  /* 弹窗 (隐藏状态不使用opacity) */
  .modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
  }
  .modal-overlay.active {
    display: flex;
  }
  .modal-box {
    background: var(--bg-color);
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    padding: 30px;
    max-width: 400px;
    width: 100%;
    text-align: center;
  }
  .modal-box p {
    font-weight: 800;
    font-size: 18px;
    margin-bottom: 20px;
    line-height: 1.4;
  }
  .modal-input-group {
    display: flex;
    gap: 10px;
  }
  .modal-input-group input {
    flex: 1;
    border: var(--border-width) solid var(--text-color);
    padding: 10px;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    background: #fff;
    color: #000;
    outline: none;
  }
  .modal-close {
    margin-top: 20px;
    background: transparent;
    border: none;
    font-weight: 800;
    font-size: 16px;
    text-decoration: underline;
    cursor: pointer;
  }

  /* 响应式 */
  @media (max-width: 1024px) {
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .steps { grid-template-columns: repeat(2, 1fr); }
    .hero { grid-template-columns: 1fr; }
    .hero-image { max-width: 600px; margin: 0 auto; }
  }

  @media (max-width: 768px) {
    .nav-links { display: none; } /* 移动端隐藏顶部导航，用底部锚点或直接滚动 */
    .hero { padding: 40px 0; }
    .grid-3 { grid-template-columns: 1fr; }
    .steps { grid-template-columns: 1fr; }
    .faq-grid { grid-template-columns: 1fr; }
    .rank-item { flex-direction: column; }
    .rank-num { width: 100%; padding: 10px; }
    .rank-img { width: 100%; height: 180px; border-right: none; border-bottom: var(--border-width) solid var(--text-color); }
    .list-item { flex-direction: column; align-items: flex-start; }
    .lazy-video { flex-direction: column; }
    .tutorial-box { padding: 20px; }
    .tutorial-box ol { font-size: 16px; }
    .hero-actions { flex-direction: column; }
    .btn { width: 100%; }
  }
  /* 在线播放 */
  .video-section {
    display: grid;
    grid-template-columns: 7fr 5fr;
    gap: 40px;
    align-items: center;
  }
  .video-preview {
    border: var(--border-width) solid var(--text-color);
    box-shadow: var(--shadow-offset) var(--shadow-offset) 0 var(--text-color);
    width: 100%;
    aspect-ratio: 16/9;
    object-fit: cover;
  }
  .video-text h3 { margin-bottom: 15px; }
  .video-text ul { padding-left: 20px; font-size: 16px; font-weight: 600; margin-bottom: 20px; }
  .video-text li { margin-bottom: 8px; }
  @media (max-width: 1024px) {
    .video-section { grid-template-columns: 1fr; }
  }