Wave Neon

:root {
      --ink: #050607;
      --acid: #b8ff2e;
      --muted: rgba(255, 255, 255, 0.5);
    }

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

    body {
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      background: var(--ink);
      font-family: "Segoe UI", system-ui, sans-serif;
      color: #fff;
    }

    .filler {
      flex: 1;
      display: grid;
      place-items: center;
      padding: 2rem;
      color: var(--muted);
    }

    footer {
      position: relative;
      background: #0a0c10;
      padding: 0 0 2rem;
      overflow: hidden;
    }

    .wave {
      display: block;
      width: 100%;
      height: 80px;
      margin-top: -1px;
    }

    .wave path {
      fill: #0a0c10;
    }

    .wave-wrap {
      background: linear-gradient(180deg, transparent, rgba(184, 255, 46, 0.08));
      line-height: 0;
    }

    .inner {
      max-width: 1100px;
      margin: 0 auto;
      padding: 0 1.5rem;
      display: grid;
      grid-template-columns: 1.4fr repeat(3, 1fr);
      gap: 2rem;
    }

    @media (max-width: 800px) {
      .inner { grid-template-columns: 1fr 1fr; }
    }

    @media (max-width: 480px) {
      .inner { grid-template-columns: 1fr; }
    }

    .brand {
      font-size: 1.25rem;
      font-weight: 900;
      margin-bottom: 0.75rem;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .brand i {
      width: 28px;
      height: 28px;
      border-radius: 8px;
      background: var(--acid);
      box-shadow: 0 0 20px rgba(184, 255, 46, 0.4);
      display: inline-block;
    }

    .brand-desc {
      color: var(--muted);
      font-size: 0.9rem;
      line-height: 1.55;
      max-width: 28ch;
    }

    h4 {
      font-size: 0.72rem;
      letter-spacing: 0.16em;
      text-transform: uppercase;
      color: var(--acid);
      margin-bottom: 0.9rem;
    }

    ul { list-style: none; }

    ul a {
      display: inline-block;
      color: var(--muted);
      text-decoration: none;
      font-size: 0.92rem;
      padding: 0.28rem 0;
      transition: color 0.2s ease, transform 0.2s ease;
    }

    ul a:hover {
      color: #fff;
      transform: translateX(3px);
    }

    .bottom {
      max-width: 1100px;
      margin: 2rem auto 0;
      padding: 1.25rem 1.5rem 0;
      border-top: 1px solid rgba(255, 255, 255, 0.08);
      display: flex;
      flex-wrap: wrap;
      gap: 0.75rem;
      justify-content: space-between;
      align-items: center;
      font-size: 0.82rem;
      color: var(--muted);
    }

    .bottom strong { color: var(--acid); font-weight: 700; }

    .socials { display: flex; gap: 0.5rem; }

    .socials a {
      width: 36px;
      height: 36px;
      border-radius: 10px;
      border: 1px solid rgba(255, 255, 255, 0.1);
      display: grid;
      place-items: center;
      color: #fff;
      text-decoration: none;
      font-size: 0.75rem;
      font-weight: 800;
      transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
    }

    .socials a:hover {
      border-color: rgba(184, 255, 46, 0.5);
      background: rgba(184, 255, 46, 0.1);
      box-shadow: 0 0 20px rgba(184, 255, 46, 0.2);
    }