:root {
  --bg: #000000;
  --text: rgba(255, 255, 255, 0.96);
  --muted: rgba(255, 255, 255, 0.74);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
}

body {
  position: relative;
  font-family: "Inter", sans-serif;
  color: var(--text);
  background: #000;
}

#bg {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
  background: #000;
}

.content {
  position: relative;
  z-index: 2;
  width: 100%;
  height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
  pointer-events: none;
}

.content-inner {
  text-align: center;
  transform: translateY(-2vh);
  max-width: 90vw;
}

.content h1 {
  margin: 0;
  font-family: "Sora", sans-serif;
  font-size: clamp(44px, 6vw, 92px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: 1px;
  color: var(--text);
  text-shadow:
    0 0 10px rgba(255, 255, 255, 0.06),
    0 0 30px rgba(255, 255, 255, 0.03);
}

.content p {
  margin: 18px 0 0;
  font-family: "Inter", sans-serif;
  font-size: clamp(14px, 1.6vw, 22px);
  font-weight: 300;
  text-transform: uppercase;
  letter-spacing: 8px;
  color: var(--muted);
  text-shadow: 0 0 12px rgba(255, 255, 255, 0.03);
}

.logo {
  position: fixed;
  top: 20px;
  left: 20px;
  width: 100px;
  height: auto;
  filter: invert(1);
  z-index: 10;
}

/* 平板及以下 */
@media (max-width: 768px) {
  .content {
    padding: 20px;
  }

  .content-inner {
    transform: translateY(-1vh);
    max-width: 92vw;
  }

  .content h1 {
    font-size: clamp(36px, 11vw, 64px);
    line-height: 1.05;
  }

  .content p {
    margin-top: 14px;
    font-size: clamp(12px, 3.2vw, 18px);
    letter-spacing: 4px;
  }

  .logo {
    top: 16px;
    left: 16px;
  }
}

@media (max-width: 480px) {
  .content {
    padding: 16px;
  }

  .content-inner {
    max-width: 94vw;
    transform: translateY(-8vh);
  }

  .content h1 {
    font-size: clamp(30px, 12vw, 44px);
    letter-spacing: 0.5px;
  }

  .content p {
    margin-top: 12px;
    font-size: 12px;
    letter-spacing: 3px;
  }

  .logo {
    top: 14px;
    left: 14px;
  }
}