:root {
      --bg: #0a0a0f;
      --text: #f0f0ff;
      --accent: #00d4ff;     /* sky blue */
      --accent-dark: #0099cc;
    }

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

    body {
      background: var(--bg);
      color: var(--text);
      font-family: system-ui, -apple-system, sans-serif;
      min-height: 100vh;
      overflow-x: hidden;
      position: relative;
    }

    body::before {
      content: "";
      position: fixed;
      inset: -2px;
      pointer-events: none;
      border: 2px solid transparent;
      border-image: linear-gradient(90deg, transparent 10%, var(--accent) 40%, var(--accent) 60%, transparent 90%) 1;
      border-image-slice: 1;
      animation: rotateBorder 16s linear infinite;
      z-index: 9999;
      opacity: 0.6;
      filter: blur(1px);
    }

    @keyframes rotateBorder {
      0%   { transform: rotate(0deg) scale(1.015); }
      25%  { transform: rotate(90deg) scale(1.01); }
      50%  { transform: rotate(180deg) scale(1.015); }
      75%  { transform: rotate(270deg) scale(1.01); }
      100% { transform: rotate(360deg) scale(1.015); }
    }

    .container {
      position: relative;
      z-index: 10;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      text-align: center;
      padding: 2rem 1rem;
      background: radial-gradient(circle at 20% 30%, rgba(0,212,255,0.09), transparent 50%);
    }

    h1 {
      font-size: clamp(3.5rem, 9vw, 8rem);
      font-weight: 900;
      letter-spacing: -0.05em;
      margin-bottom: 1.4rem;
      line-height: 0.92;
    }

    .tagline {
      font-size: clamp(1.4rem, 4.5vw, 2.4rem);
      max-width: 920px;
      opacity: 0.93;
      margin-bottom: 2.8rem;
    }

    .subtitle {
      font-size: 1.3rem;
      max-width: 720px;
      opacity: 0.82;
      margin-bottom: 4rem;
      line-height: 1.55;
    }

    .cta {
      display: inline-block;
      padding: 1.1rem 3rem;
      font-size: 1.35rem;
      font-weight: 700;
      background: linear-gradient(135deg, #00d4ff, #0088cc);
      color: #000;
      border: none;
      border-radius: 999px;
      text-decoration: none;
      transition: all 0.32s ease;
      box-shadow: 0 0 35px rgba(0,212,255,0.45);
      /* No flip effect on button */
    }

    .cta:hover {
      transform: translateY(-5px);
      box-shadow: 0 0 60px rgba(0,212,255,0.75);
    }

    /* Frequency bar */
    .frequency-bar {
      position: fixed;
      bottom: 0;
      left: 0;
      right: 0;
      height: 90px;
      display: flex;
      align-items: flex-end;
      justify-content: center;
      gap: 4px;
      padding: 0 1.5rem 1rem;
      background: rgba(5,5,15,0.55);
      backdrop-filter: blur(8px);
      z-index: 100;
      pointer-events: none;
    }

    .bar {
      width: 6px;
      background: linear-gradient(to top, var(--accent) 30%, transparent);
      border-radius: 5px 5px 0 0;
      transform-origin: bottom;
      animation: pulse var(--dur) ease-in-out infinite alternate;
    }

    .bar:nth-child(1)  { --dur: 1.3s; animation-delay: -0.1s; }
    .bar:nth-child(2)  { --dur: 0.9s; animation-delay: -0.4s; }
    /* ... rest unchanged ... */
    .bar:nth-child(15) { --dur: 1.65s; animation-delay: -1.3s; }

    /* @keyframes pulse {
      0%   { height: 8px;  opacity: 0.35; transform: scaleY(0.2); }
      100% { height: 78px; opacity: 1;    transform: scaleY(1);   }
    } */

    /* Flip effect – used both for letters and whole words */
    .flip-text {
      display: inline-flex;
      gap: 0.12em;
      font-size: clamp(2.2rem, 6vw, 5.5rem);
      font-weight: 800;
      letter-spacing: 0.7em;
      margin: 5rem 0 7rem;
      perspective: 900px;
    }

    .letter,
    .hover-flip {
      display: inline-block;
      color: white;
      transition: 
        transform 0.65s cubic-bezier(0.68, -0.6, 0.32, 1.6),
        color 0.45s ease;
      transform-style: preserve-3d;
      backface-visibility: hidden;
    }

    .letter:hover,
    .hover-flip:hover {
      color: var(--accent);
      transform: rotateX(180deg);
    }

    .trusted {
      margin-top: 9rem;
      opacity: 0.65;
      font-size: 1rem;
      letter-spacing: 0.18em;
    }
  
body, html {
  margin: 0;
  padding: 0;
  height: 100%;
}

.video-bg {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
}

.content {
  position: relative;
  z-index: 1;
  color: white;
  text-align: absolute;
  padding-top: 40vh;
  font-size: 40px;
}