/* ===== CSS VARIABLES ===== */
    :root {
      --green: #6aaa64;
      --yellow: #c9b458;
      --gray: #787c7e;
      --light-gray: #d3d6da;
      --bg: #fef9f0;
      --surface: #ffffff;
      --surface2: #f0f7ff;
      --surface3: #fff5e6;
      --text: #1a1a2e;
      --text-muted: #5a5a7a;
      --accent1: #4f86f7;
      --accent2: #f76f6f;
      --accent3: #ffb347;
      --accent4: #6aaa64;
      --accent5: #c084fc;
      --border: #e2e8f0;
      --shadow: 0 4px 24px rgba(79,134,247,0.10);
      --shadow-lg: 0 8px 40px rgba(79,134,247,0.15);
      --radius: 16px;
      --radius-sm: 10px;
      --font-display: 'Fredoka One', cursive;
      --font-heading: 'Baloo 2', cursive;
      --font-body: 'Nunito', sans-serif;
    }

    /* ===== RESET ===== */
    *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body {
      font-family: var(--font-body);
      background: var(--bg);
      color: var(--text);
      line-height: 1.7;
      overflow-x: hidden;
    }
    img { max-width: 100%; display: block; }
    a { color: inherit; text-decoration: none; }
    ul { list-style: none; }

    /* ===== SCROLLBAR ===== */
    ::-webkit-scrollbar { width: 7px; }
    ::-webkit-scrollbar-track { background: #f0f7ff; }
    ::-webkit-scrollbar-thumb { background: var(--accent1); border-radius: 10px; }

    /* ===== HEADER COMPONENT ===== */
    #site-header {
      position: sticky;
      top: 0;
      z-index: 1000;
      background: rgba(255,255,255,0.95);
      backdrop-filter: blur(12px);
      border-bottom: 2px solid var(--border);
      box-shadow: 0 2px 16px rgba(79,134,247,0.08);
    }
    .header-inner {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
      height: 70px;
      display: flex;
      align-items: center;
      justify-content: space-between;
    }
    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      font-family: var(--font-display);
      font-size: 1.75rem;
      color: var(--text);
      letter-spacing: 0.5px;
    }
    .logo-tiles {
      display: flex;
      gap: 3px;
    }
    .logo-tile {
      width: 26px; height: 26px;
      border-radius: 5px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 0.85rem;
      color: white;
      font-weight: bold;
    }
    .lt-g { background: var(--green); }
    .lt-y { background: var(--yellow); }
    .lt-b { background: var(--accent1); }

    nav ul {
      display: flex;
      gap: 8px;
      align-items: center;
    }
    nav a {
      font-family: var(--font-heading);
      font-weight: 600;
      font-size: 0.95rem;
      color: var(--text-muted);
      padding: 8px 16px;
      border-radius: 30px;
      transition: all 0.2s;
    }
    nav a:hover { background: var(--surface2); color: var(--accent1); }
    .nav-cta {
      background: var(--accent1) !important;
      color: white !important;
      font-weight: 700 !important;
    }
    .nav-cta:hover { background: #3a6fd8 !important; transform: translateY(-1px); box-shadow: var(--shadow); }

    .hamburger {
      display: none;
      flex-direction: column;
      gap: 5px;
      cursor: pointer;
      padding: 5px;
      background: none;
      border: none;
    }
    .hamburger span {
      display: block; width: 26px; height: 3px;
      background: var(--text);
      border-radius: 3px;
      transition: all 0.3s;
    }

    /* ===== HERO SECTION ===== */
    #hero {
      background: linear-gradient(135deg, #e8f4ff 0%, #fff5e6 50%, #f0ffe8 100%);
      padding: 80px 24px 60px;
      position: relative;
      overflow: hidden;
    }
    #hero::before {
      content: '';
      position: absolute;
      top: -80px; right: -80px;
      width: 400px; height: 400px;
      background: radial-gradient(circle, rgba(79,134,247,0.12) 0%, transparent 70%);
      border-radius: 50%;
    }
    #hero::after {
      content: '';
      position: absolute;
      bottom: -60px; left: -60px;
      width: 300px; height: 300px;
      background: radial-gradient(circle, rgba(106,170,100,0.12) 0%, transparent 70%);
      border-radius: 50%;
    }
    .hero-inner {
      max-width: 1200px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
      position: relative;
      z-index: 1;
    }
    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: white;
      border: 2px solid var(--accent3);
      border-radius: 30px;
      padding: 6px 16px;
      font-family: var(--font-heading);
      font-size: 0.85rem;
      font-weight: 700;
      color: #d97706;
      margin-bottom: 20px;
      box-shadow: 0 2px 12px rgba(255,179,71,0.2);
    }
    .hero-badge::before { content: '🎯'; font-size: 1rem; }
    .hero-title {
      font-family: var(--font-display);
      font-size: clamp(2.4rem, 5vw, 3.8rem);
      line-height: 1.15;
      color: var(--text);
      margin-bottom: 20px;
    }
    .hero-title span.highlight-g { color: var(--green); }
    .hero-title span.highlight-b { color: var(--accent1); }
    .hero-desc {
      font-size: 1.1rem;
      color: var(--text-muted);
      margin-bottom: 36px;
      max-width: 480px;
    }
    .hero-btns {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }
    .btn-primary {
      background: var(--accent1);
      color: white;
      padding: 14px 32px;
      border-radius: 50px;
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.05rem;
      border: none;
      cursor: pointer;
      transition: all 0.25s;
      box-shadow: 0 4px 20px rgba(79,134,247,0.35);
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 28px rgba(79,134,247,0.45); background: #3a6fd8; }
    .btn-secondary {
      background: white;
      color: var(--text);
      padding: 14px 32px;
      border-radius: 50px;
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1.05rem;
      border: 2px solid var(--border);
      cursor: pointer;
      transition: all 0.25s;
      display: inline-flex;
      align-items: center;
      gap: 8px;
    }
    .btn-secondary:hover { border-color: var(--accent1); color: var(--accent1); transform: translateY(-2px); }

    /* Wordle Preview Grid */
    .hero-game-preview {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 8px;
    }
    .preview-label {
      font-family: var(--font-heading);
      font-size: 0.85rem;
      font-weight: 700;
      color: var(--text-muted);
      letter-spacing: 1.5px;
      text-transform: uppercase;
      margin-bottom: 8px;
    }
    .preview-grid {
      display: flex;
      flex-direction: column;
      gap: 7px;
    }
    .preview-row {
      display: flex;
      gap: 7px;
    }
    .preview-cell {
      width: 58px; height: 58px;
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 1.6rem;
      color: white;
      font-weight: bold;
      transition: transform 0.3s;
    }
    .preview-cell:hover { transform: scale(1.08); }
    .pc-green { background: var(--green); box-shadow: 0 4px 12px rgba(106,170,100,0.35); }
    .pc-yellow { background: var(--yellow); box-shadow: 0 4px 12px rgba(201,180,88,0.35); }
    .pc-gray { background: var(--gray); box-shadow: 0 4px 12px rgba(120,124,126,0.25); }
    .pc-empty { background: white; border: 3px solid var(--light-gray); color: var(--text); }
    .pc-blue { background: var(--accent1); box-shadow: 0 4px 12px rgba(79,134,247,0.35); }

    /* Hero stats */
    .hero-stats {
      display: flex;
      gap: 32px;
      margin-top: 40px;
    }
    .stat-item { text-align: center; }
    .stat-num {
      font-family: var(--font-display);
      font-size: 1.8rem;
      color: var(--accent1);
      display: block;
    }
    .stat-label {
      font-size: 0.8rem;
      color: var(--text-muted);
      font-weight: 600;
      text-transform: uppercase;
      letter-spacing: 1px;
    }

    /* ===== SECTION COMMONS ===== */
    section { padding: 80px 24px; }
    .section-inner { max-width: 1200px; margin: 0 auto; }
    .section-tag {
      display: inline-block;
      background: var(--surface2);
      color: var(--accent1);
      border-radius: 30px;
      padding: 5px 16px;
      font-family: var(--font-heading);
      font-size: 0.8rem;
      font-weight: 800;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 14px;
    }
    .section-title {
      font-family: var(--font-display);
      font-size: clamp(1.8rem, 3.5vw, 2.6rem);
      color: var(--text);
      margin-bottom: 16px;
      line-height: 1.25;
    }
    .section-desc {
      font-size: 1.05rem;
      color: var(--text-muted);
      max-width: 600px;
      margin-bottom: 48px;
    }
    .text-center { text-align: center; }
    .text-center .section-desc { margin-left: auto; margin-right: auto; }

    /* ===== HOW TO PLAY SECTION ===== */
    #how-to-play { background: var(--surface); }
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 28px;
      margin-top: 48px;
    }
    .step-card {
      background: var(--bg);
      border: 2px solid var(--border);
      border-radius: var(--radius);
      padding: 36px 28px;
      text-align: center;
      position: relative;
      transition: all 0.3s;
    }
    .step-card:hover {
      transform: translateY(-6px);
      border-color: var(--accent1);
      box-shadow: var(--shadow-lg);
    }
    .step-number {
      position: absolute;
      top: -18px;
      left: 50%;
      transform: translateX(-50%);
      width: 36px; height: 36px;
      background: var(--accent1);
      color: white;
      border-radius: 50%;
      font-family: var(--font-display);
      font-size: 1.1rem;
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 4px 12px rgba(79,134,247,0.4);
    }
    .step-icon { font-size: 2.8rem; margin-bottom: 16px; margin-top: 8px; }
    .step-title {
      font-family: var(--font-heading);
      font-size: 1.2rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 10px;
    }
    .step-desc { font-size: 0.95rem; color: var(--text-muted); }

    /* Color legend */
    .color-legend {
      display: flex;
      gap: 20px;
      justify-content: center;
      flex-wrap: wrap;
      margin-top: 48px;
    }
    .legend-item {
      display: flex;
      align-items: center;
      gap: 12px;
      background: white;
      border: 2px solid var(--border);
      border-radius: var(--radius-sm);
      padding: 14px 22px;
      transition: transform 0.2s;
    }
    .legend-item:hover { transform: scale(1.03); }
    .legend-tile {
      width: 44px; height: 44px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 1.4rem;
      color: white;
    }
    .legend-text strong {
      display: block;
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 0.95rem;
      color: var(--text);
    }
    .legend-text span { font-size: 0.82rem; color: var(--text-muted); }

    /* ===== LIVE GAME SECTION ===== */
    #play-game {
      background: linear-gradient(135deg, #e8f4ff 0%, #f0ffe8 100%);
    }
    .game-container {
      max-width: 500px;
      margin: 0 auto;
    }
    .game-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-bottom: 24px;
    }
    .game-info {
      display: flex;
      gap: 20px;
    }
    .game-stat {
      text-align: center;
    }
    .game-stat-num {
      font-family: var(--font-display);
      font-size: 1.4rem;
      color: var(--accent1);
    }
    .game-stat-label {
      font-size: 0.72rem;
      color: var(--text-muted);
      font-weight: 700;
      text-transform: uppercase;
    }
    .game-board {
      display: flex;
      flex-direction: column;
      gap: 8px;
      margin-bottom: 20px;
    }
    .game-row {
      display: flex;
      gap: 8px;
      justify-content: center;
    }
    .game-tile {
      width: 60px; height: 60px;
      border: 3px solid var(--light-gray);
      border-radius: 10px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 1.7rem;
      color: var(--text);
      background: white;
      transition: all 0.15s;
      text-transform: uppercase;
    }
    .game-tile.filled { border-color: #aaa; animation: pop 0.1s ease; }
    .game-tile.correct { background: var(--green); border-color: var(--green); color: white; animation: flipIn 0.5s ease forwards; }
    .game-tile.present { background: var(--yellow); border-color: var(--yellow); color: white; animation: flipIn 0.5s ease forwards; }
    .game-tile.absent { background: var(--gray); border-color: var(--gray); color: white; animation: flipIn 0.5s ease forwards; }
    .game-tile.shake { animation: shake 0.4s ease; }

    @keyframes pop {
      0% { transform: scale(1); }
      50% { transform: scale(1.12); }
      100% { transform: scale(1); }
    }
    @keyframes flipIn {
      0% { transform: rotateX(0deg); }
      50% { transform: rotateX(-90deg); }
      100% { transform: rotateX(0deg); }
    }
    @keyframes shake {
      0%,100% { transform: translateX(0); }
      20% { transform: translateX(-6px); }
      40% { transform: translateX(6px); }
      60% { transform: translateX(-4px); }
      80% { transform: translateX(4px); }
    }
    @keyframes bounce {
      0%,100% { transform: translateY(0); }
      50% { transform: translateY(-8px); }
    }

    .game-message {
      min-height: 36px;
      text-align: center;
      font-family: var(--font-heading);
      font-size: 0.95rem;
      font-weight: 700;
      color: var(--accent1);
      margin-bottom: 8px;
    }

    /* Keyboard */
    .keyboard {
      display: flex;
      flex-direction: column;
      gap: 8px;
      align-items: center;
    }
    .keyboard-row {
      display: flex;
      gap: 6px;
    }
    .key {
      min-width: 38px;
      height: 56px;
      padding: 0 6px;
      border-radius: 8px;
      background: white;
      border: 2px solid var(--border);
      font-family: var(--font-heading);
      font-size: 0.88rem;
      font-weight: 800;
      color: var(--text);
      cursor: pointer;
      transition: all 0.15s;
      display: flex;
      align-items: center;
      justify-content: center;
      text-transform: uppercase;
      box-shadow: 0 2px 6px rgba(0,0,0,0.06);
      user-select: none;
    }
    .key:hover { background: var(--surface2); transform: translateY(-2px); }
    .key:active { transform: translateY(0); }
    .key.wide { min-width: 56px; font-size: 0.75rem; }
    .key.correct { background: var(--green); border-color: var(--green); color: white; }
    .key.present { background: var(--yellow); border-color: var(--yellow); color: white; }
    .key.absent { background: var(--light-gray); border-color: var(--light-gray); color: var(--text-muted); }

    .game-actions {
      display: flex;
      gap: 12px;
      justify-content: center;
      margin-top: 20px;
    }
    .btn-game {
      background: var(--accent1);
      color: white;
      border: none;
      border-radius: 30px;
      padding: 10px 24px;
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 0.95rem;
      cursor: pointer;
      transition: all 0.2s;
      display: flex;
      align-items: center;
      gap: 7px;
    }
    .btn-game:hover { background: #3a6fd8; transform: translateY(-1px); }
    .btn-game.outline {
      background: white;
      color: var(--text);
      border: 2px solid var(--border);
    }
    .btn-game.outline:hover { border-color: var(--accent1); color: var(--accent1); }

    /* ===== FEATURES SECTION ===== */
    #features { background: var(--surface); }
    .features-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .feature-card {
      background: var(--bg);
      border: 2px solid var(--border);
      border-radius: var(--radius);
      padding: 32px 24px;
      transition: all 0.3s;
      position: relative;
      overflow: hidden;
    }
    .feature-card::before {
      content: '';
      position: absolute;
      top: 0; left: 0; right: 0;
      height: 4px;
      background: var(--card-accent, var(--accent1));
      border-radius: var(--radius) var(--radius) 0 0;
    }
    .feature-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
    .feature-icon {
      width: 56px; height: 56px;
      border-radius: 14px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.6rem;
      margin-bottom: 18px;
      background: var(--icon-bg, #e8f4ff);
    }
    .feature-title {
      font-family: var(--font-heading);
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 10px;
    }
    .feature-desc { font-size: 0.92rem; color: var(--text-muted); }

    /* ===== ABOUT WORDLE SECTION ===== */
    #about-wordle {
      background: linear-gradient(135deg, #fff5e6 0%, #f0ffe8 100%);
    }
    .about-grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 60px;
      align-items: center;
    }
    .about-text h2 {
      font-family: var(--font-display);
      font-size: clamp(1.7rem, 3vw, 2.4rem);
      color: var(--text);
      margin-bottom: 20px;
      line-height: 1.3;
    }
    .about-text p {
      font-size: 1rem;
      color: var(--text-muted);
      margin-bottom: 16px;
    }
    .about-highlights {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 16px;
      margin-top: 28px;
    }
    .highlight-item {
      display: flex;
      align-items: flex-start;
      gap: 12px;
      background: white;
      border-radius: var(--radius-sm);
      padding: 16px;
      border: 2px solid var(--border);
    }
    .highlight-icon {
      font-size: 1.5rem;
      flex-shrink: 0;
      margin-top: 2px;
    }
    .highlight-text strong {
      display: block;
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 0.9rem;
      color: var(--text);
      margin-bottom: 4px;
    }
    .highlight-text span { font-size: 0.82rem; color: var(--text-muted); }

    .about-visual {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 12px;
    }
    .big-tile-row { display: flex; gap: 10px; }
    .big-tile {
      width: 70px; height: 70px;
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 2rem;
      color: white;
    }
    .bt-g { background: var(--green); box-shadow: 0 6px 20px rgba(106,170,100,0.4); }
    .bt-y { background: var(--yellow); box-shadow: 0 6px 20px rgba(201,180,88,0.4); }
    .bt-gr { background: var(--gray); box-shadow: 0 6px 20px rgba(120,124,126,0.3); }
    .bt-b { background: var(--accent1); box-shadow: 0 6px 20px rgba(79,134,247,0.4); }
    .bt-p { background: var(--accent5); box-shadow: 0 6px 20px rgba(192,132,252,0.4); }
    .bt-e { background: white; border: 3px solid var(--light-gray); color: var(--text); }

    /* ===== WORD TIPS SECTION ===== */
    #tips { background: var(--surface); }
    .tips-grid {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 24px;
    }
    .tip-card {
      display: flex;
      gap: 20px;
      background: var(--bg);
      border: 2px solid var(--border);
      border-radius: var(--radius);
      padding: 28px;
      transition: all 0.3s;
      align-items: flex-start;
    }
    .tip-card:hover { border-color: var(--accent1); box-shadow: var(--shadow); }
    .tip-num {
      flex-shrink: 0;
      width: 44px; height: 44px;
      border-radius: 12px;
      background: var(--accent1);
      color: white;
      font-family: var(--font-display);
      font-size: 1.3rem;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .tip-body h4 {
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1rem;
      color: var(--text);
      margin-bottom: 8px;
    }
    .tip-body p { font-size: 0.92rem; color: var(--text-muted); }

    /* ===== EDUCATIONAL SECTION ===== */
    #educational {
      background: linear-gradient(135deg, #e8f4ff 0%, #f5e8ff 100%);
    }
    .edu-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }
    .edu-card {
      background: white;
      border-radius: var(--radius);
      padding: 32px 24px;
      text-align: center;
      border: 2px solid var(--border);
      transition: all 0.3s;
    }
    .edu-card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); }
    .edu-icon {
      font-size: 3rem;
      margin-bottom: 18px;
    }
    .edu-title {
      font-family: var(--font-heading);
      font-size: 1.1rem;
      font-weight: 800;
      color: var(--text);
      margin-bottom: 12px;
    }
    .edu-desc { font-size: 0.92rem; color: var(--text-muted); line-height: 1.7; }

    /* ===== FAQ SECTION ===== */
    #faq { background: var(--surface); }
    .faq-grid {
      max-width: 780px;
      margin: 0 auto;
    }
    .faq-item {
      border: 2px solid var(--border);
      border-radius: var(--radius-sm);
      margin-bottom: 14px;
      overflow: hidden;
      transition: border-color 0.2s;
    }
    .faq-item.open { border-color: var(--accent1); }
    .faq-question {
      padding: 20px 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      cursor: pointer;
      background: white;
      transition: background 0.2s;
    }
    .faq-question:hover { background: var(--surface2); }
    .faq-q-text {
      font-family: var(--font-heading);
      font-weight: 700;
      font-size: 1rem;
      color: var(--text);
    }
    .faq-icon {
      width: 28px; height: 28px;
      background: var(--surface2);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--accent1);
      font-size: 1.2rem;
      font-weight: 800;
      flex-shrink: 0;
      transition: transform 0.3s, background 0.2s;
    }
    .faq-item.open .faq-icon { transform: rotate(45deg); background: var(--accent1); color: white; }
    .faq-answer {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.35s ease, padding 0.35s;
      background: var(--bg);
      padding: 0 24px;
      font-size: 0.95rem;
      color: var(--text-muted);
      line-height: 1.8;
    }
    .faq-item.open .faq-answer {
      max-height: 300px;
      padding: 16px 24px 20px;
    }

    /* ===== CTA SECTION ===== */
    #cta {
      background: linear-gradient(135deg, var(--accent1) 0%, #6b47dc 100%);
      padding: 80px 24px;
      text-align: center;
      position: relative;
      overflow: hidden;
    }
    #cta::before {
      content: '';
      position: absolute;
      top: -100px; left: 50%;
      transform: translateX(-50%);
      width: 600px; height: 600px;
      background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 60%);
      border-radius: 50%;
    }
    .cta-title {
      font-family: var(--font-display);
      font-size: clamp(2rem, 4vw, 3rem);
      color: white;
      margin-bottom: 16px;
      position: relative;
      z-index: 1;
    }
    .cta-desc {
      font-size: 1.1rem;
      color: rgba(255,255,255,0.85);
      margin-bottom: 36px;
      max-width: 500px;
      margin-left: auto;
      margin-right: auto;
      position: relative;
      z-index: 1;
    }
    .btn-cta {
      background: white;
      color: var(--accent1);
      padding: 16px 40px;
      border-radius: 50px;
      font-family: var(--font-heading);
      font-weight: 800;
      font-size: 1.1rem;
      border: none;
      cursor: pointer;
      transition: all 0.25s;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      position: relative;
      z-index: 1;
      box-shadow: 0 8px 32px rgba(0,0,0,0.2);
    }
    .btn-cta:hover { transform: translateY(-3px); box-shadow: 0 12px 40px rgba(0,0,0,0.28); }
    .cta-tiles {
      display: flex;
      justify-content: center;
      gap: 10px;
      margin-top: 40px;
      position: relative;
      z-index: 1;
    }
    .cta-tile {
      width: 50px; height: 50px;
      border-radius: 10px;
      background: rgba(255,255,255,0.2);
      border: 2px solid rgba(255,255,255,0.35);
      display: flex;
      align-items: center;
      justify-content: center;
      font-family: var(--font-display);
      font-size: 1.4rem;
      color: white;
      animation: bounce 1.5s infinite;
    }
    .cta-tile:nth-child(2) { animation-delay: 0.15s; }
    .cta-tile:nth-child(3) { animation-delay: 0.3s; }
    .cta-tile:nth-child(4) { animation-delay: 0.45s; }
    .cta-tile:nth-child(5) { animation-delay: 0.6s; }

    /* ===== FOOTER ===== */
    #site-footer {
      background: #1a1a2e;
      color: rgba(255,255,255,0.75);
      padding: 60px 24px 30px;
    }
    .footer-inner {
      max-width: 1200px;
      margin: 0 auto;
    }
    .footer-grid {
      display: grid;
      grid-template-columns: 2fr 1fr 1fr 1fr;
      gap: 40px;
      margin-bottom: 48px;
    }
    .footer-brand .logo {
      color: white;
      margin-bottom: 14px;
    }
    .footer-brand p {
      font-size: 0.9rem;
      line-height: 1.8;
      color: rgba(255,255,255,0.6);
    }
    .footer-col h4 {
      font-family: var(--font-heading);
      font-size: 0.9rem;
      font-weight: 800;
      color: white;
      text-transform: uppercase;
      letter-spacing: 1.5px;
      margin-bottom: 18px;
    }
    .footer-col ul li { margin-bottom: 10px; }
    .footer-col ul li a {
      font-size: 0.9rem;
      color: rgba(255,255,255,0.6);
      transition: color 0.2s;
    }
    .footer-col ul li a:hover { color: var(--accent3); }
    .footer-bottom {
      border-top: 1px solid rgba(255,255,255,0.1);
      padding-top: 24px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: wrap;
      gap: 14px;
    }
    .footer-bottom p { font-size: 0.85rem; color: rgba(255,255,255,0.45); }
    .footer-badges {
      display: flex;
      gap: 10px;
    }
    .footer-badge {
      background: rgba(255,255,255,0.08);
      border: 1px solid rgba(255,255,255,0.15);
      border-radius: 20px;
      padding: 5px 14px;
      font-size: 0.78rem;
      color: rgba(255,255,255,0.55);
    }

    /* ===== MOBILE NAV ===== */
    @media (max-width: 768px) {
      .hamburger { display: flex; }
      nav { display: none; }
      nav.open {
        display: block;
        position: absolute;
        top: 70px; left: 0; right: 0;
        background: white;
        border-bottom: 2px solid var(--border);
        padding: 16px 24px;
        z-index: 999;
      }
      nav.open ul { flex-direction: column; gap: 4px; }
      nav.open a { display: block; width: 100%; }
      #site-header { position: sticky; }

      .hero-inner { grid-template-columns: 1fr; }
      .hero-game-preview { display: none; }
      .hero-stats { gap: 20px; }
      .steps-grid { grid-template-columns: 1fr; }
      .features-grid { grid-template-columns: 1fr; }
      .about-grid { grid-template-columns: 1fr; }
      .about-visual { display: none; }
      .tips-grid { grid-template-columns: 1fr; }
      .edu-grid { grid-template-columns: 1fr; }
      .footer-grid { grid-template-columns: 1fr 1fr; }
      .preview-cell { width: 46px; height: 46px; font-size: 1.3rem; }
      .game-tile { width: 50px; height: 50px; font-size: 1.4rem; }
      .key { min-width: 32px; height: 48px; font-size: 0.8rem; }
      .key.wide { min-width: 46px; }
    }

    /* ===== FLOATING CONFETTI / ENTRANCE ANIMATION ===== */
    .fade-in-up {
      opacity: 0;
      transform: translateY(30px);
      transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-in-up.visible { opacity: 1; transform: translateY(0); }
    .fade-delay-1 { transition-delay: 0.1s; }
    .fade-delay-2 { transition-delay: 0.2s; }
    .fade-delay-3 { transition-delay: 0.3s; }
    .fade-delay-4 { transition-delay: 0.4s; }

    /* Confetti burst on win */
    .confetti-container {
      position: fixed;
      top: 0; left: 0;
      width: 100%; height: 100%;
      pointer-events: none;
      z-index: 9999;
      overflow: hidden;
    }
    .confetti-piece {
      position: absolute;
      width: 10px; height: 10px;
      border-radius: 2px;
      animation: confettiFall 2.5s ease forwards;
    }
    @keyframes confettiFall {
      0% { transform: translateY(-20px) rotate(0deg); opacity: 1; }
      100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
    }