* {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    body {
      font-family: 'Inter', sans-serif;
      background: #0a0c10;
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1.5rem;
      position: relative;
      overflow-x: hidden;
    }

    /* Animated gradient orbs & noise overlay */
    body::before {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 20% 30%, rgba(139, 92, 246, 0.25), rgba(6, 182, 212, 0.15), transparent 70%),
                  radial-gradient(circle at 85% 70%, rgba(236, 72, 153, 0.2), rgba(16, 185, 129, 0.1), transparent 75%);
      pointer-events: none;
      z-index: 0;
    }

    /* animated grain texture */
    body::after {
      content: "";
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='1' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.045'/%3E%3C/svg%3E");
      pointer-events: none;
      opacity: 0.4;
      z-index: 0;
    }

    /* main card container */
    .linktree-card {
      position: relative;
      z-index: 2;
      max-width: 560px;
      width: 100%;
      background: rgba(12, 14, 22, 0.6);
      backdrop-filter: blur(14px);
      border-radius: 3rem;
      padding: 2rem 1.8rem 2.2rem;
      box-shadow: 0 25px 45px -12px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
      transition: all 0.3s ease;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    /* profile section */
    .profile {
      text-align: center;
      margin-bottom: 1.8rem;
    }

    .avatar-wrapper {
      position: relative;
      display: inline-block;
    }

    .avatar {
      width: 110px;
      height: 110px;
      object-fit: cover;
      border-radius: 50%;
      border: 3px solid rgba(255, 255, 255, 0.25);
      box-shadow: 0 15px 30px -10px rgba(0, 0, 0, 0.4);
      transition: transform 0.25s ease, border-color 0.2s;
      background: #1e1a2f;
    }

    .avatar:hover {
      transform: scale(1.02);
      border-color: rgba(139, 92, 246, 0.7);
    }

    .status-badge {
      position: absolute;
      bottom: 6px;
      right: 6px;
      background: #10b981;
      width: 18px;
      height: 18px;
      border-radius: 50%;
      border: 2px solid #0c0e16;
      box-shadow: 0 0 4px rgba(0,0,0,0.3);
    }

    .name {
      font-size: 1.9rem;
      font-weight: 700;
      background: linear-gradient(135deg, #FFFFFF, #c084fc, #60a5fa);
      background-clip: text;
      -webkit-background-clip: text;
      color: transparent;
      letter-spacing: -0.3px;
      margin-top: 1rem;
      margin-bottom: 0.3rem;
    }

    .handle {
      font-size: 0.9rem;
      font-weight: 500;
      color: #a1a1b9;
      background: rgba(255,255,255,0.05);
      display: inline-block;
      padding: 0.2rem 0.9rem;
      border-radius: 40px;
      backdrop-filter: blur(4px);
      margin-bottom: 0.75rem;
    }

    .bio {
      color: #cbcddf;
      font-size: 0.95rem;
      line-height: 1.4;
      max-width: 85%;
      margin: 0 auto;
      font-weight: 400;
    }

    .greeting-message {
      margin-top: 0.7rem;
      font-size: 0.8rem;
      background: rgba(139, 92, 246, 0.2);
      display: inline-block;
      padding: 0.25rem 1rem;
      border-radius: 30px;
      backdrop-filter: blur(2px);
      color: #c9b6ff;
      font-weight: 500;
    }

    /* divider */
    .divider {
      margin: 1.7rem 0 1.5rem;
      height: 1px;
      background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), rgba(139, 92, 246, 0.5), rgba(255,255,255,0.2), transparent);
    }

    /* link buttons */
    .links-container {
      display: flex;
      flex-direction: column;
      gap: 1rem;
      margin-bottom: 2rem;
    }

    .link-btn {
      display: flex;
      align-items: center;
      justify-content: space-between;
      background: rgba(20, 22, 36, 0.7);
      backdrop-filter: blur(4px);
      padding: 0.9rem 1.5rem;
      border-radius: 2rem;
      text-decoration: none;
      color: #f0f0ff;
      font-weight: 550;
      font-size: 1rem;
      transition: all 0.25s cubic-bezier(0.2, 0.9, 0.4, 1.1);
      border: 1px solid rgba(255, 255, 255, 0.06);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
    }

    .link-left {
      display: flex;
      align-items: center;
      gap: 1rem;
    }

    .link-left i {
      width: 26px;
      font-size: 1.35rem;
      color: #a78bfa;
      transition: color 0.2s;
    }

    .link-btn span:not(.arrow-icon) {
      letter-spacing: -0.2px;
    }

    .arrow-icon {
      font-size: 0.9rem;
      color: #7c7faa;
      transition: transform 0.2s, color 0.2s;
    }

    .link-btn:hover {
      background: rgba(255, 255, 255, 0.15);
      transform: scale(1.02) translateY(-2px);
      border-color: rgba(139, 92, 246, 0.5);
      box-shadow: 0 12px 22px -12px rgba(0, 0, 0, 0.5);
    }

    .link-btn:hover .link-left i {
      color: #e9d5ff;
    }

    .link-btn:hover .arrow-icon {
      transform: translateX(5px);
      color: #c4b5fd;
    }

    /* social icons row */
    .social-row {
      display: flex;
      justify-content: center;
      gap: 1.7rem;
      margin: 1.2rem 0 1.5rem;
      flex-wrap: wrap;
    }

    .social-icon {
      background: rgba(30, 32, 48, 0.6);
      backdrop-filter: blur(4px);
      width: 48px;
      height: 48px;
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      text-decoration: none;
      color: #c9d1ff;
      font-size: 1.5rem;
      transition: all 0.2s ease;
      border: 1px solid rgba(255, 255, 255, 0.08);
    }

    .social-icon:hover {
      background: #8b5cf6;
      color: white;
      transform: translateY(-4px);
      border-color: rgba(255, 255, 255, 0.3);
      box-shadow: 0 8px 18px rgba(139, 92, 246, 0.3);
    }

    /* footer */
    .footer-note {
      text-align: center;
      font-size: 0.7rem;
      color: #6c6f94;
      margin-top: 1rem;
      letter-spacing: 0.3px;
      border-top: 1px dashed rgba(255,255,255,0.1);
      padding-top: 1.2rem;
    }

    /* interactive demo alert style (toast) */
    .demo-toast {
      position: fixed;
      bottom: 25px;
      left: 50%;
      transform: translateX(-50%) scale(0.9);
      background: #1e1b32e6;
      backdrop-filter: blur(12px);
      padding: 0.6rem 1.4rem;
      border-radius: 60px;
      color: #e0deff;
      font-size: 0.8rem;
      font-weight: 500;
      z-index: 1000;
      pointer-events: none;
      opacity: 0;
      transition: opacity 0.2s, transform 0.2s;
      border: 1px solid rgba(139, 92, 246, 0.5);
      box-shadow: 0 6px 18px rgba(0,0,0,0.3);
      white-space: nowrap;
      font-family: 'Inter', monospace;
    }

    /* responsive */
    @media (max-width: 500px) {
      .linktree-card {
        padding: 1.6rem 1.2rem;
        border-radius: 2rem;
      }
      .name {
        font-size: 1.6rem;
      }
      .link-btn {
        padding: 0.75rem 1.2rem;
      }
      .avatar {
        width: 90px;
        height: 90px;
      }
      .bio {
        max-width: 95%;
        font-size: 0.85rem;
      }
      .social-icon {
        width: 42px;
        height: 42px;
        font-size: 1.3rem;
      }
    }

    @media (max-width: 420px) {
      .link-left i {
        font-size: 1.2rem;
        width: 22px;
      }
      .link-btn {
        font-size: 0.9rem;
      }
    }