#hextech-calculator {
      --blue: #1A56E8;
      --blue-dark: #1240B8;
      --blue-light: #E8EFFE;
      --blue-mid: #C5D5FA;
      --white: #FFFFFF;
      --bg: #F0F4FF;
      --card-bg: #FFFFFF;
      --border: #D0DBFA;
      --text: #0D1B4B;
      --muted: #5A6A9A;
      --warn: #B45309;
      --warn-bg: #FFFBEB;
      --warn-border: #F59E0B;
      --shadow: 0 10px 30px rgba(26, 86, 232, 0.08);
      --radius: 18px;
    }

    #hextech-calculator * { box-sizing: border-box; }

    #hextech-calculator {
      margin: 0;
      font-family: Arial, Helvetica, sans-serif;
      background: var(--bg);
      color: var(--text);
    }

    #hextech-calculator .wrap {
      max-width: 980px;
      margin: 0 auto;
      padding: 24px 16px 40px;
    }

    #hextech-calculator .hero {
      background: linear-gradient(135deg, var(--blue-dark), var(--blue));
      color: #fff;
      border-radius: 24px;
      padding: 24px;
      box-shadow: var(--shadow);
      margin-bottom: 18px;
    }

    #hextech-calculator .hero-top {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
    }

    #hextech-calculator .brand {
      display: flex;
      align-items: center;
      gap: 14px;
      flex-wrap: wrap;
    }

    #hextech-calculator .logo {
      padding: 10px 14px;
      border: 1px solid rgba(255,255,255,0.22);
      border-radius: 14px;
      background: rgba(255,255,255,0.08);
      font-size: 22px;
      font-weight: 700;
      letter-spacing: 0.5px;
      white-space: nowrap;
    }

    #hextech-calculator .version {
      font-size: 12px;
      color: rgba(255,255,255,0.75);
    }

    #hextech-calculator .hero h1 {
      margin: 14px 0 8px;
      font-size: 30px;
      line-height: 1.15;
    }

    #hextech-calculator .hero p {
      margin: 0;
      color: rgba(255,255,255,0.88);
      max-width: 760px;
      line-height: 1.5;
    }

    #hextech-calculator .grid {
      display: grid;
      grid-template-columns: repeat(12, 1fr);
      gap: 16px;
    }

    #hextech-calculator .main {
      grid-column: span 7;
    }

    #hextech-calculator .side {
      grid-column: span 5;
      position: sticky;
      top: 16px;
      align-self: start;
    }

    #hextech-calculator .card {
      background: var(--card-bg);
      border: 1px solid var(--border);
      border-radius: var(--radius);
      box-shadow: var(--shadow);
      padding: 18px;
      margin-bottom: 16px;
    }

    #hextech-calculator .card h2 {
      margin: 0 0 14px;
      font-size: 13px;
      letter-spacing: 0.8px;
      text-transform: uppercase;
      color: var(--blue);
    }

    #hextech-calculator .field {
      display: grid;
      grid-template-columns: 1.1fr 1fr;
      gap: 14px;
      align-items: center;
      padding: 8px 0;
    }

    #hextech-calculator .field label {
      font-size: 14px;
      color: var(--muted);
      line-height: 1.4;
    }

    #hextech-calculator input,
#hextech-calculator select {
      width: 100%;
      border: 1px solid var(--border);
      border-radius: 12px;
      padding: 12px 14px;
      font-size: 15px;
      color: var(--text);
      background: #fff;
      outline: none;
      transition: 0.2s ease;
    }

    #hextech-calculator input:focus,
#hextech-calculator select:focus {
      border-color: var(--blue);
      box-shadow: 0 0 0 3px rgba(26, 86, 232, 0.10);
    }

    #hextech-calculator details.card {
      overflow: hidden;
      padding: 0;
    }

    #hextech-calculator details summary {
      list-style: none;
      cursor: pointer;
      background: var(--blue);
      color: #fff;
      padding: 16px 18px;
      font-weight: 700;
      font-size: 14px;
    }

    #hextech-calculator details summary::-webkit-details-marker { display: none; }

    #hextech-calculator .details-body {
      padding: 16px 18px 18px;
      background: var(--warn-bg);
    }

    #hextech-calculator .penalty-total {
      display: inline-block;
      margin-bottom: 12px;
      padding: 8px 12px;
      border: 1px solid var(--warn-border);
      border-radius: 12px;
      background: #FEF3C7;
      color: #92400E;
      font-size: 14px;
      font-weight: 700;
    }

    #hextech-calculator .slider-row {
      padding: 10px 0;
      border-top: 1px solid rgba(180, 83, 9, 0.12);
    }

    #hextech-calculator .slider-row:first-of-type { border-top: 0; }

    #hextech-calculator .slider-head {
      display: flex;
      justify-content: space-between;
      gap: 12px;
      margin-bottom: 6px;
      align-items: center;
    }

    #hextech-calculator .slider-title {
      font-weight: 700;
      font-size: 14px;
      color: var(--text);
    }

    #hextech-calculator .slider-desc {
      font-size: 12px;
      color: #8a6c2f;
      line-height: 1.4;
      margin-bottom: 8px;
    }

    #hextech-calculator .slider-value {
      font-weight: 700;
      color: var(--warn);
      white-space: nowrap;
      font-size: 14px;
    }

    #hextech-calculator input[type="range"] {
      padding: 0;
      border: 0;
      box-shadow: none;
      accent-color: var(--blue);
      background: transparent;
    }

    #hextech-calculator .cta {
      display: block;
      width: 100%;
      border: 0;
      border-radius: 14px;
      background: var(--blue);
      color: #fff;
      padding: 16px 18px;
      font-size: 17px;
      font-weight: 700;
      cursor: pointer;
      transition: 0.2s ease;
      box-shadow: var(--shadow);
    }

    #hextech-calculator .cta:hover {
      background: var(--blue-dark);
      transform: translateY(-1px);
    }

    #hextech-calculator .metrics {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 12px;
      margin-bottom: 16px;
    }

    #hextech-calculator .metric {
      background: #fff;
      border: 1px solid var(--border);
      border-radius: 16px;
      padding: 14px;
    }

    #hextech-calculator .metric small {
      display: block;
      color: var(--muted);
      margin-bottom: 8px;
      line-height: 1.35;
    }

    #hextech-calculator .metric strong {
      font-size: 28px;
      line-height: 1;
      color: var(--blue);
    }

    #hextech-calculator .metric span {
      font-size: 14px;
      color: var(--muted);
      margin-left: 4px;
    }

    #hextech-calculator .section-title {
      margin: 16px 0 10px;
      font-size: 13px;
      text-transform: uppercase;
      letter-spacing: 0.8px;
      color: var(--muted);
      font-weight: 700;
    }

    #hextech-calculator .detail-row {
      display: flex;
      justify-content: space-between;
      gap: 16px;
      padding: 10px 0;
      border-bottom: 1px solid var(--blue-light);
      font-size: 14px;
    }

    #hextech-calculator .detail-row strong.accent {
      color: var(--warn);
    }

    #hextech-calculator .detail-row.total {
      font-weight: 700;
      color: var(--blue);
    }

    #hextech-calculator .recommendation {
      margin-top: 16px;
      padding: 16px;
      border: 1px solid var(--border);
      border-radius: 16px;
      background: var(--blue-light);
    }

    #hextech-calculator .recommendation h3 {
      margin: 0 0 8px;
      color: var(--blue-dark);
      font-size: 18px;
    }

    #hextech-calculator .recommendation p {
      margin: 0;
      color: var(--blue-dark);
      line-height: 1.5;
      font-size: 14px;
    }

    #hextech-calculator .warning {
      margin-top: 10px;
      border: 1px solid var(--warn-border);
      background: var(--warn-bg);
      border-radius: 14px;
      padding: 12px 14px;
      color: #92400E;
      font-size: 14px;
      line-height: 1.45;
    }

    #hextech-calculator .placeholder {
      color: var(--muted);
      font-size: 14px;
      line-height: 1.6;
    }

    #hextech-calculator .footnote {
      margin-top: 10px;
      font-size: 12px;
      color: #7b87b0;
      line-height: 1.5;
    }

    #hextech-calculator .muted-box {
      background: #fff;
      border: 1px dashed var(--border);
      border-radius: 14px;
      padding: 14px;
      font-size: 14px;
      color: var(--muted);
      line-height: 1.5;
    }

    @media (max-width: 900px) {
      #hextech-calculator .main,
#hextech-calculator .side { grid-column: span 12; }
      #hextech-calculator .side { position: static; }
      #hextech-calculator .metrics { grid-template-columns: 1fr; }
    }

    @media (max-width: 620px) {
      #hextech-calculator .hero h1 { font-size: 24px; }
      #hextech-calculator .field { grid-template-columns: 1fr; gap: 8px; }
      #hextech-calculator .detail-row { flex-direction: column; gap: 4px; }
      #hextech-calculator .slider-head { flex-direction: column; align-items: flex-start; }
    }
  

/* HEXTECH native calculator integration */
#hextech-calculator {
    width: 100%;
    position: relative;
    isolation: isolate;
}

#hextech-calculator,
#hextech-calculator * {
    box-sizing: border-box;
}

#hextech-calculator .wrap {
    width: 100%;
}