:root{
    --bg: #f6f7fb;
    --card-bg: #ffffff;
    --muted: #6b7280;
    --accent: #233044;
    --btn-bg: #2f3b52;
    --btn-hover: #1f2a3b;
    --green: #6fcf97;
    --blue: #4da6ff;
    --yellow: #ffd166;
    --red: #ff6b6b;
    --card-shadow: 0 10px 25px rgba(37,49,63,0.08);
  }
  body{
     background: var(--bg);
  }
  .wrap{
    max-width: 1200px;
    margin: 48px auto;
    padding: 0 20px;
  }

  .heading{
    text-align: center;
    margin-bottom: 28px;
    color: #ffff;
    font-weight: 600;
    font-size: 2.25rem;
  }

  /* Cards row */
  .plans {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 22px;
    align-items: start;
  }

  .plan-container {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}


  .plan {
    background: var(--card-bg);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    min-height: 420px;
    position: relative;
  }

  /* top plan title */
  .plan__title {
    padding: 18px;
    text-align: center;
    font-weight: 600;
    font-size: 1.7rem;
    letter-spacing: .6px;
    background: #fff;
    border-bottom: 1px solid rgba(15,23,42,0.03);
  }

  /* colored banner */
  .plan__banner {
    padding: 14px 18px;
    color: #fff;
    font-weight: 700;
    text-align: center;
    font-size: 1.8rem;
  }

  .plan--a .plan__banner{ background: linear-gradient(90deg,var(--green), #4fbf88); }
  .plan--b .plan__banner{ background: linear-gradient(90deg,var(--blue), #3da0ff); }
  .plan--c .plan__banner{ background: linear-gradient(90deg,var(--yellow), #ffcf66); color: #0f172a; }
  .plan--d .plan__banner{ background: linear-gradient(90deg,var(--red), #ff5a66); }

  /* content */
  .plan__content {
    padding: 20px 22px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1 1 auto;
  }

  .plan__row {
    display:flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px dashed rgba(15,23,42,0.04);
    padding: 8px 0;
    font-size: 1.5rem;
    color: var(--muted);
  }

  .plan__row strong {
    color: #111827;
    font-weight:600;
  }

  .plan__features {
    padding: 12px 0;
    color: var(--muted);
    font-size: 1.5rem;
  }

  .plan__support {
    margin-top: auto;
    color: var(--muted);
    font-size:  1.5rem;
  }

  /* action */
  .plan__action {
    padding: 18px;
    border-top: 1px solid rgba(15,23,42,0.03);
    text-align: center;
  }

  .btn {
    display:inline-block;
    background: var(--btn-bg);
    color: #fff;
    padding: 10px 18px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: background .16s ease, transform .08s ease;
  }
  .btn:hover{ background: var(--btn-hover); transform: translateY(-2px); }
  .btn:active{ transform: translateY(0); }

  /* small labels style */
  .small-muted {
    font-size: 1.23rem;
    color: var(--muted);
  }

  /* responsive */
  @media (max-width: 1100px){
    .plans { grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 640px){
    .plans { grid-template-columns: 1fr; }
    .plan{ min-height: auto; }
  }