:root {
    --bg-color: #FFD700;
    --text-main: #000000;
    --btn-color: #FF1493;
    --border-color: #000000;
    --shadow-color: #000000;
    --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-main);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
  }

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

  ul {
    list-style: none;
  }

  img {
    max-width: 100%;
    display: block;
    border: 4px solid var(--border-color);
    background-color: #fff;
  }

  /* Typography */
  h1, h2, h3, h4 {
    font-weight: 900;
    line-height: 1.1;
    text-align: left;
    letter-spacing: -1px;
  }
  
  h1 { font-size: 3rem; margin-bottom: 24px; }
  h2 { font-size: 2.2rem; margin-bottom: 20px; text-transform: uppercase; }
  h3 { font-size: 1.5rem; margin-bottom: 12px; }
  p { font-size: 1.1rem; margin-bottom: 16px; font-weight: 500;}

  /* Grid & Layout */
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }

  .grid-layout {
    display: grid;
    gap: 30px;
  }

  .btn {
    display: inline-block;
    background-color: var(--btn-color);
    color: #fff;
    font-weight: 900;
    font-size: 1.1rem;
    padding: 14px 28px;
    border: 4px solid var(--border-color);
    box-shadow: 8px 8px 0 var(--shadow-color);
    text-transform: uppercase;
    text-align: center;
    cursor: pointer;
    transition: transform 0.1s, box-shadow 0.1s;
  }

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

  .btn-white {
    background-color: #fff;
    color: var(--text-main);
  }

  .section-title {
    display: flex;
    align-items: center;
    border-bottom: 6px solid var(--border-color);
    margin-bottom: 30px;
    padding-bottom: 10px;
  }
  .section-title::before {
    content: "■";
    margin-right: 12px;
    font-size: 2rem;
    line-height: 1;
  }

  /* Header */
  header {
    padding: 30px 0 20px;
    border-bottom: 6px solid var(--border-color);
    background-color: var(--bg-color);
    position: sticky;
    top: 0;
    z-index: 100;
  }

  .header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
  }

  .logo-area {
    display: flex;
    align-items: center;
    gap: 16px;
  }

  .logo-area img {
    height: 36px;
    border: none;
    background: transparent;
  }

  .logo-area h1 {
    margin: 0;
    font-size: 2.5rem;
    letter-spacing: -2px;
  }

  .nav-links {
    display: flex;
    gap: 24px;
    flex-wrap: wrap;
    font-weight: 800;
    font-size: 1.1rem;
  }

  .nav-links a {
    padding: 4px 0;
    border-bottom: 4px solid transparent;
  }

  .nav-links a:hover {
    border-bottom: 4px solid var(--border-color);
  }

  /* Hero */
  .hero {
    padding: 60px 0;
    border-bottom: 6px solid var(--border-color);
  }

  .hero-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-text p {
    font-size: 1.3rem;
    font-weight: 600;
    max-width: 600px;
    margin-bottom: 40px;
  }

  .download-group {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }

  /* Main Content Sections */
  section {
    padding: 60px 0;
    border-bottom: 6px solid var(--border-color);
  }

  /* Today Updates */
  .update-scroll {
    display: flex;
    gap: 20px;
    overflow-x: auto;
    padding-bottom: 20px;
  }

  .update-card {
    flex: 0 0 280px;
    background: #fff;
    border: 4px solid var(--border-color);
    box-shadow: 8px 8px 0 var(--shadow-color);
  }

  .update-card img {
    border: none;
    border-bottom: 4px solid var(--border-color);
  }

  .update-info {
    padding: 16px;
  }

  .update-info h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
  }

  .update-info p {
    font-size: 0.95rem;
    margin: 0;
    color: #444;
  }

  /* Play Online */
  .online-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .video-main {
    position: relative;
  }

  .play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: var(--btn-color);
    border: 4px solid var(--border-color);
    box-shadow: 4px 4px 0 var(--shadow-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 24px;
    font-weight: bold;
    cursor: pointer;
  }

  /* Rankings */
  .rank-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
  }

  .rank-item {
    display: flex;
    align-items: center;
    background: #fff;
    border: 4px solid var(--border-color);
    padding: 16px;
    box-shadow: 6px 6px 0 var(--shadow-color);
  }

  .rank-num {
    font-size: 2rem;
    font-weight: 900;
    width: 50px;
    flex-shrink: 0;
  }

  .rank-item img {
    width: 60px;
    height: 80px;
    object-fit: cover;
    margin-right: 20px;
    border: 2px solid var(--border-color);
  }
  
  .rank-info h3 {
    font-size: 1.2rem;
    margin-bottom: 4px;
  }
  .rank-info p {
    margin: 0;
    font-size: 0.9rem;
  }

  /* AI Workflow */
  .workflow-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .step-card {
    background: #fff;
    border: 4px solid var(--border-color);
    padding: 24px;
    box-shadow: 8px 8px 0 var(--shadow-color);
  }

  /* Calendar & Tutorial */
  .side-by-side {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .calendar-box, .tutorial-box {
    background: #fff;
    border: 4px solid var(--border-color);
    box-shadow: 8px 8px 0 var(--shadow-color);
    padding: 30px;
  }

  .calendar-img {
    width: 100%;
    height: auto;
  }

  /* Marquee */
  .marquee-section {
    background: #000;
    color: #FFD700;
    padding: 20px 0;
    overflow: hidden;
    border-bottom: 6px solid var(--border-color);
    white-space: nowrap;
  }

  .marquee-content {
    display: inline-block;
    animation: marquee 25s linear infinite;
    font-size: 1.2rem;
    font-weight: bold;
  }
  
  .marquee-content span {
    margin-right: 40px;
  }

  @keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }

  /* FAQ */
  .faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
  }

  .faq-item {
    background: #fff;
    border: 4px solid var(--border-color);
    box-shadow: 4px 4px 0 var(--shadow-color);
    padding: 20px;
  }

  .faq-item h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    display: flex;
    align-items: flex-start;
  }
  .faq-item h3::before {
    content: "Q:";
    margin-right: 8px;
    color: var(--btn-color);
  }
  .faq-item p {
    margin: 0;
  }

  /* Hidden Section */
  .hidden-gems {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .gallery {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  /* Footer */
  footer {
    padding: 40px 0;
    font-size: 0.85rem;
    color: #555;
    text-align: center;
  }
  footer p {
    font-size: 0.85rem;
    margin-bottom: 8px;
  }
  footer a {
    color: #555;
    text-decoration: underline;
  }

  /* Overlay */
  .overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 999;
  }
  .overlay.active {
    display: flex;
  }
  .overlay-box {
    background: #fff;
    border: 4px solid var(--border-color);
    box-shadow: 8px 8px 0 var(--shadow-color);
    padding: 30px;
    max-width: 90%;
    width: 400px;
    text-align: center;
  }
  .overlay-box p {
    font-weight: 800;
    margin-bottom: 20px;
    color: #000;
  }
  .overlay-box input {
    width: 100%;
    padding: 12px;
    border: 4px solid var(--border-color);
    margin-bottom: 20px;
    font-size: 1rem;
    font-family: var(--font-main);
  }

  /* Breakpoints */
  @media (min-width: 768px) {
    h1 { font-size: 4rem; }
    h2 { font-size: 3rem; }
    .hero-grid { grid-template-columns: 1fr 1fr; align-items: center; }
    .update-scroll { flex-wrap: wrap; overflow-x: visible; }
    .update-card { flex: 0 0 calc(50% - 10px); }
    .online-grid { grid-template-columns: 2fr 1fr; }
    .workflow-steps { grid-template-columns: repeat(2, 1fr); }
    .side-by-side { grid-template-columns: 1fr 1fr; }
    .hidden-gems { grid-template-columns: 1fr 1fr; }
    .gallery { grid-template-columns: repeat(3, 1fr); }
  }

  @media (min-width: 1024px) {
    h1 { font-size: 5rem; }
    .update-card { flex: 0 0 calc(33.333% - 14px); }
    .workflow-steps { grid-template-columns: repeat(3, 1fr); }
    .rank-list { display: grid; grid-template-columns: 1fr 1fr; }
    .gallery { grid-template-columns: repeat(4, 1fr); }
  }