* {
    box-sizing: border-box;
  }
  
  :root {
  
    /* 默认：下午 */
  
    --bg1: #061423;
    --bg2: #0a2742;
    --bg3: #020710;
  
    --blob1: rgba(0, 180, 255, 0.45);
    --blob2: rgba(0, 120, 255, 0.32);
  
    --glass: rgba(60, 180, 255, 0.14);
    --glass-border: rgba(255,255,255,0.18);
  
    --text-soft: rgba(255,255,255,0.66);
  }
  
  /* Morning */
  
  body.morning {
    --bg1: #18344d;
    --bg2: #406a8f;
    --bg3: #101f30;
  
    --blob1: rgba(255, 220, 120, 0.35);
    --blob2: rgba(120, 200, 255, 0.28);
  
    --glass: rgba(255,255,255,0.12);
  }
  
  /* Sunset */
  
  body.sunset {
    --bg1: #2a1635;
    --bg2: #5b2f52;
    --bg3: #120812;
  
    --blob1: rgba(255, 120, 160, 0.35);
    --blob2: rgba(255, 170, 80, 0.28);
  
    --glass: rgba(255,255,255,0.10);
  }
  
  /* Night */
  
  body.night {
    --bg1: #020611;
    --bg2: #08111f;
    --bg3: #000000;
  
    --blob1: rgba(70, 110, 255, 0.22);
    --blob2: rgba(0, 180, 255, 0.12);
  
    --glass: rgba(255,255,255,0.07);
  }
  
  body {
    margin: 0;
    min-height: 100vh;
    overflow: hidden;
    background-size: 200% 200%;
  
    font-family:
      -apple-system,
      BlinkMacSystemFont,
      "SF Pro Display",
      "Segoe UI",
      sans-serif;
  
    color: white;
  
    background:
      radial-gradient(circle at 20% 20%, var(--blob1), transparent 35%),
      radial-gradient(circle at 80% 70%, var(--blob2), transparent 40%),
      linear-gradient(
        135deg,
        var(--bg1),
        var(--bg2) 45%,
        var(--bg3)
      );
  
    transition:
      background 3s ease,
      color 1s ease;
  }
  
  /* animated blobs */
  
  body::before,
  body::after {
    content: "";
    position: fixed;
    inset: -30%;
    z-index: -1;
    filter: blur(80px);
    opacity: 0.85;
    animation: auroraFlow 18s ease-in-out infinite alternate;
  }
  
  body::before {
    background:
      radial-gradient(circle at 20% 30%, rgba(0, 200, 255, 0.75), transparent 28%),
      radial-gradient(circle at 70% 25%, rgba(120, 90, 255, 0.55), transparent 30%),
      radial-gradient(circle at 45% 75%, rgba(0, 255, 190, 0.45), transparent 32%);
  }
  
  body::after {
    background:
      radial-gradient(circle at 25% 70%, rgba(255, 80, 170, 0.35), transparent 30%),
      radial-gradient(circle at 80% 65%, rgba(0, 140, 255, 0.55), transparent 35%),
      radial-gradient(circle at 50% 40%, rgba(255, 255, 255, 0.12), transparent 25%);
    animation-duration: 26s;
    mix-blend-mode: screen;
  }
  
  @keyframes auroraFlow {
    0% {
      transform: translate3d(-3%, -2%, 0) scale(1) rotate(0deg);
    }
  
    50% {
      transform: translate3d(4%, 3%, 0) scale(1.12) rotate(8deg);
    }
  
    100% {
      transform: translate3d(-2%, 5%, 0) scale(1.18) rotate(-6deg);
    }
  }
  
  .page {
    min-height: 100vh;
    padding: 70px 24px;
  
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  .pill {
    padding: 15px 34px;
    margin-bottom: 70px;
  
    border-radius: 999px;
  
    font-size: 24px;
    font-weight: 700;
  
    background: rgba(255,255,255,0.08);
  
    border: 1px solid rgba(255,255,255,0.12);
  
    backdrop-filter: blur(24px);
  
    box-shadow:
      inset 0 1px 0 rgba(255,255,255,0.16),
      0 10px 40px rgba(0,0,0,0.22);
  
    transition: 0.4s ease;
  }
  
  .grid {
    width: min(920px, 100%);
  
    display: grid;
  
    grid-template-columns: repeat(2, 1fr);
  
    gap: 28px;
  }
  
  .card {
    position: relative;
  
    min-height: 220px;
  
    padding: 32px;
  
    border-radius: 34px;
  
    text-decoration: none;
  
    color: white;
  
    background: var(--glass);
  
    border: 1px solid var(--glass-border);
  
    backdrop-filter: blur(28px);
  
    -webkit-backdrop-filter: blur(28px);
  
    box-shadow:
      inset 0 1px 0 rgba(255,255,255,0.16),
      0 20px 60px rgba(0,0,0,0.22);
  
    transition:
      transform 0.35s ease,
      background 0.35s ease,
      border-color 0.35s ease;
  }
  
  .card:hover {
    transform: translateY(-8px);
  
    background: rgba(255,255,255,0.14);
  
    border-color: rgba(255,255,255,0.24);
  }
  
  .icon {
    width: 60px;
    height: 60px;
  
    border-radius: 22px;
  
    display: grid;
    place-items: center;
  
    font-size: 30px;
  
    margin-bottom: 42px;
  
    background: rgba(255,255,255,0.08);
  
    border: 1px solid rgba(255,255,255,0.12);
  }
  
  .card h2 {
    margin: 0 0 10px;
  
    font-size: 28px;
  }
  
  .card p {
    margin: 0;
  
    color: var(--text-soft);
  
    font-size: 17px;
  }
  
  .badge {
    position: absolute;
  
    top: 18px;
    right: 18px;
  
    padding: 8px 14px;
  
    border-radius: 999px;
  
    font-size: 12px;
  
    background: rgba(255,255,255,0.10);
  
    color: rgba(255,255,255,0.65);
  
    border: 1px solid rgba(255,255,255,0.10);
  }
  
  .disabled {
    opacity: 0.82;
  }
  
  @media (max-width: 700px) {
  
    .page {
      padding: 42px 18px;
    }
  
    .pill {
      margin-bottom: 42px;
      font-size: 20px;
    }
  
    .grid {
      grid-template-columns: 1fr;
    }
  
    .card {
      min-height: 190px;
    }
  }