body {
    font-family: 'Noto Sans TC', sans-serif;
    background: linear-gradient(to bottom, #fffef2, #faf8ef);
    color: #333;
    margin: 0;
    padding: 0;
    line-height: 1.7;
    overflow-x: hidden;
  }
  .banner {
    position: relative;
    background: url('../picture/screenshot/banner.png') center/cover no-repeat;
    height: 300px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    animation: fadeInBanner 2s ease-out;
  }
  .banner::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(255,255,255,0) 0%, rgba(255,255,255,1) 100%);
  }
  .banner h1, .banner p {
    position: relative;
    z-index: 1;
    margin: 0;
    color: #1f2937;
    animation: popIn 1s ease-out;
  }
  .banner h1 {
    font-size: 3rem;
    animation-delay: 0.3s;
  }
  .banner p {
    margin-top: 0.5rem;
    color: #555;
    animation-delay: 0.5s;
  }
  nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: linear-gradient(to right, #fef9c3, #e0f2fe);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    padding: 0.6rem 1.2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    border-bottom: 1px solid rgba(0,0,0,0.05);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease-in-out;
    animation: fadeIn 1s ease;
    border-radius: 0 0 12px 12px;
  }
  nav .left-group {
    display: flex;
    align-items: center;
  }
  .right-group {
    display: flex;
    align-items: center;
    gap: 1.2rem;
  }
  .logo {
    height: 28px;
    margin-right: 1rem;
  }
  nav a {
    margin: 0 0.75rem;
    color: #1d4ed8;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    padding: 0.3rem 0.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
  }
  nav a:hover {
    text-decoration: none;
    background: rgba(253, 224, 71, 0.3);
    color: #dc2626;
  }
  .github-link img,
  .discord-link img {
    height: 24px;
    vertical-align: middle;
    margin-left: 10px;
  }
  .container {
    max-width: 1000px;
    margin: 2rem auto;
    background: #fff;
    padding: 2rem;
    border-radius: 16px;
    animation: fadeUp 1s ease-in;
  }
  .container img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 1rem auto;
    border-radius: 12px;
    transition: transform 0.3s ease;
  }
  .container img:hover {
    transform: scale(1.03);
  }
  h2 {
    border-left: 4px solid #facc15;
    padding-left: 0.75rem;
    color: #222;
    animation: fadeIn 1s ease-in;
  }
  h2::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: #facc15;
    animation: slideIn 1s ease-out;
  }
  ul {
    padding-left: 1.5rem;
  }
  li {
    margin-bottom: 0.6rem;
    transition: transform 0.2s ease, background 0.3s;
    padding-left: 0.5rem;
  }
  li:hover {
    transform: translateX(8px);
    background: rgba(250, 204, 21, 0.1);
    border-left: 3px solid #facc15;
  }
  a {
    color: #1d4ed8;
    text-decoration: none;
    transition: all 0.3s ease-in-out;
  }
  a:hover {
    color: #dc2626;
    text-decoration: underline;
  }
  .quote {
    background: #fef9c3;
    padding: 2rem;
    margin-top: 3rem;
    border-left: 6px solid #facc15;
    font-style: italic;
    font-size: 1.2rem;
    color: #4b5563;
    border-radius: 12px;
    animation: fadeIn 2s ease-in;
  }
  .video-embed {
    margin-top: 3rem;
    text-align: center;
  }
  iframe {
    width: 100%;
    height: 550px;
    max-width: 800px;
    border: none;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
  }
  footer {
    text-align: center;
    padding: 2rem;
    font-size: 0.95rem;
    color: #666;
    background: linear-gradient(to right, #f3f4f6, #e5e7eb);
    margin-top: 3rem;
    animation: fadeIn 1.2s ease-in;
  }
  @keyframes fadeInBanner {
    from { opacity: 0; transform: translateY(-30px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }
  @keyframes fadeUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
  }
  @keyframes popIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
  }
  @keyframes slideIn {
    from { width: 0; }
    to { width: 60px; }
  }
  .screenshot-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    column-gap: 1rem;
    margin-top: 1.5rem;
    padding: 0 1rem;
  }
  .screenshot-gallery img {
    width: 100%;
    height: auto;
    border-radius: 16px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.1);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
  }
  .screenshot-gallery img:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 24px rgba(0, 0, 0, 0.2);
  }
  .intro-cover {
    position: relative;
    height: 100vh;
    background: linear-gradient(to bottom, #fefce8, #fff);
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    box-sizing: border-box;
    animation: fadeIn 1.5s ease-in;
  }
  .intro-text {
    max-width: 700px;
    animation: popIn 1.4s ease;
  }
  .intro-text h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: #1f2937;
  }
  .intro-text p {
    font-size: 1.25rem;
    color: #555;
  }
  .container, .banner, footer {
    opacity: 0;
    transform: translateY(50px);
    transition: all 1s ease, transform 0.6s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.6s ease;
  }
  .visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
  }
  .section-title {
    display: inline-block;
    animation: popIn 0.8s ease;
  }
  .section-title::before {
    content: '';
    display: inline-block;
    width: 12px;
    height: 12px;
    background: #facc15;
    border-radius: 50%;
    margin-right: 0.5rem;
    vertical-align: middle;
    animation: popIn 0.8s ease;
  }
.container.intro-text {
  max-width: 1000px;
  margin: 2rem auto;
  padding: 2rem 2.5rem;
  background: #fefce8;
  border-left: 6px solid #facc15;
  border-radius: 14px;
  box-shadow: 0 4px 16px rgba(0,0,0,0.05);
  font-size: 1.1rem;
  line-height: 1.95;
  color: #444;
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s ease-in-out;
}
.download-button {
  background: #1d4ed8;
  color: #fff;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.3s;
  display: inline-block;
}
.download-button:hover {
  background: #2563eb;
}
.div-margin-center {
  margin-top: 1rem;
  text-align: center;
}
.lang-switch {
  margin-left: 1rem;
}
.lang-switch select {
  background: white;
  border: none;
  padding: 0.4em 0.8em;
  border-radius: 6px;
  font-weight: bold;
  cursor: pointer;
  font-size: 1rem;
}