* { margin: 0; padding: 0; box-sizing: border-box; }
    html { scroll-behavior: smooth; }
    body {
      font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
      color: #ffffff;
      background: #0a0e27;
      overflow-x: hidden;
      position: relative;
    }
    body::before {
      content: '';
      position: fixed;
      top: 50%;
      right: -200px;
      width: 600px;
      height: 600px;
      background: radial-gradient(circle, rgba(0, 217, 255, 0.15) 0%, transparent 70%);
      border-radius: 50%;
      pointer-events: none;
      animation: floatGlow 8s ease-in-out infinite;
      z-index: 0;
    }
    @keyframes floatGlow {
      0%, 100% { transform: translateY(0px) translateX(0px); opacity: 0.15; }
      50% { transform: translateY(-50px) translateX(-30px); opacity: 0.25; }
    }
    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 2rem 3rem;
      background: rgba(10, 14, 39, 0.95);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid rgba(0, 217, 255, 0.1);
      position: sticky;
      top: 0;
      z-index: 100;
    }
    .logo {
      font-size: 26px;
      font-weight: 700;
      background: linear-gradient(135deg, #00d9ff, #c41e3a);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      letter-spacing: -0.5px;
      text-decoration: none;
      cursor: pointer;
    }
    nav a {
      color: #ffffff;
      text-decoration: none;
      margin: 0 1.5rem;
      font-size: 14px;
      font-weight: 500;
      transition: all 0.3s;
      position: relative;
    }
    nav a::after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, #00d9ff, #c41e3a);
      transition: width 0.3s;
    }
    nav a:hover::after { width: 100%; }
    nav a:hover { color: #00d9ff; }
    .menu-toggle { display: none; color: #00d9ff; font-size: 24px; line-height: 1; padding: 6px 12px; border: 1px solid rgba(0, 217, 255, 0.35); border-radius: 6px; cursor: pointer; user-select: none; }
    .container {
      max-width: 900px;
      margin: 0 auto;
      padding: 6rem 3rem;
      position: relative;
      z-index: 1;
    }
    h1 {
      font-size: 48px;
      font-weight: 800;
      margin-bottom: 3rem;
      background: linear-gradient(135deg, #c41e3a, #00d9ff);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
    }
    h2 {
      font-size: 28px;
      font-weight: 700;
      color: #00d9ff;
      margin-top: 3rem;
      margin-bottom: 1.5rem;
    }
    h3 {
      font-size: 20px;
      font-weight: 700;
      color: #ffd700;
      margin-top: 2rem;
      margin-bottom: 1rem;
    }
    p {
      color: #b0b8cc;
      font-size: 16px;
      line-height: 1.8;
      margin-bottom: 1.5rem;
    }
    ul, ol {
      color: #b0b8cc;
      font-size: 16px;
      line-height: 1.8;
      margin-left: 2rem;
      margin-bottom: 1.5rem;
    }
    li {
      margin-bottom: 1rem;
    }
    .highlight {
      background: linear-gradient(135deg, rgba(0, 217, 255, 0.1), rgba(196, 30, 58, 0.1));
      border-left: 3px solid #00d9ff;
      padding: 1.5rem;
      margin: 2rem 0;
      border-radius: 6px;
    }
    .highlight h4 {
      color: #00d9ff;
      font-size: 18px;
      margin-bottom: 0.8rem;
    }
    .seal-versions { display: flex; gap: 2rem; flex-wrap: wrap; margin: 1rem 0 1.5rem; }
    .seal-version { flex: 1 1 200px; text-align: center; padding: 1.5rem; border-radius: 10px; background: #0a0e27; border: 1px solid rgba(0, 217, 255, 0.2); }
    .seal-version-light { background: #ffffff; }
    .seal-version img { width: 180px; height: 180px; display: block; margin: 0 auto 0.75rem; }
    .seal-version span { font-size: 13px; color: #b0b8cc; }
    .seal-version-light span { color: #0a0e27; }
    footer {
      background: rgba(0, 0, 0, 0.5);
      color: #b0b8cc;
      padding: 3rem;
      text-align: center;
      border-top: 1px solid rgba(0, 217, 255, 0.1);
      font-size: 14px;
      margin-top: 4rem;
    }
    footer a {
      color: #00d9ff;
      text-decoration: none;
      transition: color 0.3s;
    }
    footer a:hover { color: #ffd700; }
    @media (max-width: 768px) {
      header { padding: 1.25rem 1.5rem; }
      .menu-toggle { display: block; }
      nav { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: rgba(10, 14, 39, 0.98); border-bottom: 1px solid rgba(0, 217, 255, 0.15); padding: 0.5rem 0 1rem; }
      nav.open { display: flex; }
      nav a { margin: 0; padding: 0.9rem 1.5rem; }
      .container { padding: 3rem 1.5rem; }
      h1 { font-size: 36px; }
      .highlight { padding: 1.25rem; }
      .seal-version img { width: 150px; height: 150px; }
    }