* { box-sizing: border-box; }
    :root {
      --glass-bg: rgba(0, 0, 0, 0.3);
      --border-color: rgba(255, 255, 255, 0.2);
      --text-color: #ffffff;
      --button-color: #ffffff;
    }
    html, body {
      margin: 0;
      padding: 0;
      width: 100%; height: 100%;
      overflow: hidden;
      background: transparent;
      font-family: "Michroma", sans-serif;
      display: flex; justify-content: center; align-items: center;
    }
    #bg-video {
      position: fixed; top: 0; left: 0;
      width: 100%; height: 100%; object-fit: cover; z-index: -1;
    }
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(20px); }
      to   { opacity: 1; transform: translateY(0); }
    }
    @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.05); }
    }
    .container {
      display: flex;
      width: 60vw; max-width: 900px;
      gap: 20px; padding: 20px;
    }
    .column {
      flex: 1;
      padding: 1.8em;
      display: flex; flex-direction: column;
      justify-content: center; align-items: center;
      border-radius: 20px;
      background: var(--glass-bg);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-color);
      color: var(--text-color);
      opacity: 0;
      transform: translateY(20px);
      transition: opacity 600ms cubic-bezier(.22,.9,.37,1), transform 600ms cubic-bezier(.22,.9,.37,1);
    }
    .column.visible {
      opacity: 1;
      transform: translateY(0);
    }
    .avatar {
      width: 150px; height: 150px;
      border-radius: 50%; object-fit: cover;
      margin-bottom: 1em;
      border: 2px solid rgba(255,255,255,0.4);
    }
    h1 {
      margin: 0.5em 0; font-size: 1.8em;
      color: var(--text-color);
      text-align: center;
    }
    p {
      font-size: 1em;
      color: #dddddd;
      text-align: center;
      max-width: 60%; margin: 0 auto;
    }
    .links {
      list-style: none; padding: 0; margin: 0; width: 100%;
    }
    .links li { margin: 10px 0; }
    .links a {
      display: flex; align-items: center;
      justify-content: center;
      padding: 12px 20px;
      font-size: 1.1em;
      color: var(--button-color);
      text-decoration: none;
      border-radius: 12px;
      background: var(--glass-bg);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-color);
      transition: transform 0.3s, background 0.3s;
      width: 100%;
    }
    .links a:hover {
      transform: translateY(-4px);
      background: rgba(0,0,0,0.6);
    }
    .links a i { margin-right: 10px; font-size: 1.2em; }
    .audio-toggle {
      position: fixed;
      bottom: 20px; right: 20px;
      width: 50px; height: 50px;
      background: var(--glass-bg);
      backdrop-filter: blur(10px);
      border: 1px solid var(--border-color);
      border-radius: 50%;
      display: flex; align-items: center; justify-content: center;
      cursor: pointer;
      transition: background 0.3s;
      z-index: 10;
      font-size: 1.6em;
      color: var(--button-color);
    }
    @media (max-width: 600px) {
      .container {
        flex-direction: column;
        width: 90vw;
        padding: 10px 0;
        gap: 8px;
        margin: 0;
      }
      .column { width: 100%; padding: 1.5em; }
      .avatar { width: 90px; height: 90px; }
      .links a { padding: 8px 12px; font-size: 0.95em; }
      .audio-toggle {
        width: 40px; height: 40px;
        font-size: 1.2em;
        bottom: 10px; right: 10px;
      }
    }
    #start-overlay {
      position: fixed; top: 0; left: 0;
      width: 100%; height: 100%;
      background: rgba(0,0,0,0.5);
      backdrop-filter: blur(20px);
      display: flex; align-items: center; justify-content: center;
      z-index: 1000;
    }    
    #start-btn {
      font-family: "Michroma", sans-serif;
      padding: 12px 20px;
      font-size: 1.1em;
      color: var(--button-color);
      background: var(--glass-bg);
      backdrop-filter: blur(8px);
      border: 1px solid var(--border-color);
      border-radius: 12px;
      cursor: pointer;
      transition: background 0.3s;
      animation: fadeInUp 1s ease-out, pulse 2s ease-in-out 1s infinite;
    }    
    #start-btn:hover {
      animation-play-state: paused;
      transform: translateY(-4px) scale(1.05);
      background: rgba(0,0,0,0.6);
    }