.pine-calc {
    background: #000;
    color: #fff;
    padding: 70px 16px;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  }

  .pine-calc__card{
    max-width: 980px;
    margin: 0 auto;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 16px;
    background: radial-gradient(1200px 500px at 10% 0%, rgba(255,255,255,.08), rgba(255,255,255,0)) , #050505;
    padding: 18px;
  }

  .pine-calc__header { margin-bottom: 16px; }
  .pine-calc__title { font-size: 20px; font-weight: 700; letter-spacing: .2px; }
  .pine-calc__subtitle { margin-top: 6px; color: rgba(255,255,255,.68); font-size: 13px; line-height: 1.35; }

  .pine-calc__grid{
    display: grid;
    grid-template-columns: 1fr 1fr 180px;
    gap: 12px;
    align-items: end;
    margin: 14px 0 12px;
  }

  @media (max-width: 780px){
    .pine-calc__grid{ grid-template-columns: 1fr; }
    .pine-calc__field--wide{ width: 100%; }
  }

  .pine-calc__field{ display: grid; gap: 6px; }
  .pine-calc__label{ font-size: 12px; color: rgba(255,255,255,.72); }

  .pine-calc__select{
    width: 100%;
    height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,.18);
    background-color: rgba(0,0,0,.35);
    color: #fff;
    padding: 0 44px 0 12px;
    outline: none;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image:
      linear-gradient(45deg, transparent 50%, rgba(255,255,255,.70) 50%),
      linear-gradient(135deg, rgba(255,255,255,.70) 50%, transparent 50%);
    background-position:
      calc(100% - 18px) 18px,
      calc(100% - 12px) 18px;
    background-size:
      6px 6px,
      6px 6px;
    background-repeat: no-repeat;
  }
  .pine-calc__select:hover{ border-color: rgba(255,255,255,.28); }
  .pine-calc__select:focus{
    border-color: rgba(255,255,255,.45);
    box-shadow: 0 0 0 3px rgba(255,255,255,.10);
  }

  .pine-calc__btn{
    height: 44px;
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,.20);
    background: rgba(255,255,255,.06);
    color: #fff;
    cursor: pointer;
  }
  .pine-calc__btn:hover{ background: rgba(255,255,255,.10); }
  .pine-calc__btn:active{ transform: translateY(1px); }

  .pine-calc__results{
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin: 14px 0 10px;
  }

  @media (max-width: 980px){
    .pine-calc__results{ grid-template-columns: repeat(2, 1fr); }
  }
  @media (max-width: 520px){
    .pine-calc__results{ grid-template-columns: 1fr; }
  }

  .pine-calc__result{
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 14px;
    padding: 12px;
    background: rgba(0,0,0,.25);
  }
  .pine-calc__k{ font-size: 12px; color: rgba(255,255,255,.72); }
  .pine-calc__v{ margin-top: 6px; font-size: 18px; font-weight: 700; }

  .pine-calc__note{
    margin-top: 6px;
    font-size: 12px;
    color: rgba(255,255,255,.65);
    grid-column: 1 / -1;
  }

  .pine-calc__cta{
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 16px;
    margin-top: 6px;
    border: 1px solid rgba(128, 213, 114, .55);
    border-radius: 14px;
    background:
      radial-gradient(700px 220px at 10% 0%, rgba(128, 213, 114, .18), rgba(128, 213, 114, 0)),
      rgba(0,0,0,.30);
    box-shadow:
      0 0 0 1px rgba(255,255,255,.06) inset,
      0 12px 30px rgba(0,0,0,.55);
  }

  @media (max-width: 780px){
    .pine-calc__cta{ flex-direction: column; align-items: stretch; }
  }

  .pine-calc__cta-text{
    font-size: 14px;
    color: rgba(255,255,255,.86);
    line-height: 1.35;
  }

  .pine-calc__cta-contacts{
    margin-top: 8px;
    font-size: 12px;
    color: rgba(255,255,255,.70);
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
  }

  .pine-calc__cta-link{
    color: rgba(255,255,255,.92);
    text-decoration: none;
    border-bottom: 1px solid rgba(255,255,255,.25);
  }

  .pine-calc__cta-link:hover{
    border-bottom-color: rgba(255,255,255,.55);
  }

  .pine-calc__cta-sep{
    color: rgba(255,255,255,.35);
  }

  .pine-calc__cta-btn{
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 16px;
    border-radius: 12px;
    background: #80d572;
    color: #0b0b0b;
    font-weight: 700;
    text-decoration: none;
    border: 1px solid rgba(255,255,255,.10);
    white-space: nowrap;
    box-shadow:
      0 10px 18px rgba(0,0,0,.40),
      0 0 0 1px rgba(0,0,0,.25) inset;
  }

  .pine-calc__cta-btn:hover{ filter: brightness(0.98); }
  .pine-calc__cta-btn:active{ transform: translateY(1px); }

  .pine-calc__chart{
    margin-top: 14px;
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 14px;
    background: rgba(0,0,0,.25);
    padding: 12px;
  }
  .pine-calc__chart-head{
    display:flex;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    align-items: baseline;
    margin-bottom: 10px;
  }
  .pine-calc__chart-title{ font-size: 13px; color: rgba(255,255,255,.80); font-weight: 600; }
  .pine-calc__chart-meta{ font-size: 12px; color: rgba(255,255,255,.60); }

  .pine-calc__canvas{
    width: 100%;
    height: 280px;
    display:block;
  }