/* Inline style 1 */
:root {
      --primary: #0f766e;
      --secondary: #14b8a6;
      --bg: #f5f7fa;
      --text: #222;
      --card: #ffffff;
      --muted: #666;
    }

    body {
      font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
      background: var(--bg);
      margin: 0;
      color: var(--text);
      line-height: 1.6;
    }

    header {
      background: var(--primary);
      color: #fff;
      padding: 40px 20px;
      text-align: center;
    }

    header h1 {
      margin: 0;
      font-size: 32px;
    }

    header p {
      margin-top: 10px;
      font-size: 16px;
    }

    nav {
      background: #0d9488;
      padding: 12px;
      text-align: center;
      position: sticky;
      top: 0;
      z-index: 100;
    }

    nav a {
      color: #fff;
      margin: 0 12px;
      text-decoration: none;
      font-size: 15px;
      font-weight: 600;
      display: inline-block;
    }

    .container {
      max-width: 1000px;
      margin: 30px auto;
      background: var(--card);
      padding: 35px;
      border-radius: 12px;
      box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    }

    h2 {
      color: var(--primary);
      border-bottom: 2px solid #f0fdfa;
      padding-bottom: 10px;
      margin-top: 0;
    }

    h3 {
      color: var(--primary);
      margin-top: 25px;
    }

    .grid {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 20px;
      margin-bottom: 20px;
    }

    label {
      display: block;
      margin-bottom: 8px;
      font-weight: bold;
      font-size: 14px;
    }

    select, input {
      width: 100%;
      padding: 12px;
      margin-bottom: 20px;
      border: 1px solid #ddd;
      border-radius: 6px;
      box-sizing: border-box;
      font-size: 15px;
    }

    button {
      width: 100%;
      background: var(--secondary);
      color: #fff;
      border: none;
      padding: 16px;
      font-size: 18px;
      font-weight: bold;
      border-radius: 8px;
      cursor: pointer;
      transition: 0.3s;
    }

    button:hover {
      background: var(--primary);
    }

    .result {
      margin-top: 25px;
      padding: 25px;
      background: #f0fdfa;
      border-left: 6px solid var(--secondary);
      font-size: 20px;
      display: none;
      border-radius: 4px;
    }

    .note {
      color: var(--muted);
      font-size: 15px;
    }

    .faq-item {
      margin-bottom: 18px;
      border-bottom: 1px solid #eee;
      padding-bottom: 12px;
    }

    .faq-q {
      font-weight: bold;
      color: var(--primary);
      display: block;
      margin-bottom: 6px;
    }

    footer {
      background: #111;
      color: #888;
      text-align: center;
      padding: 40px 20px;
      margin-top: 60px;
      font-size: 14px;
    }

    @media (max-width: 700px) {
      .grid {
        grid-template-columns: 1fr;
      }

      nav a {
        margin: 6px 8px;
      }

      .container {
        margin: 20px 12px;
        padding: 24px;
      }

      header h1 {
        font-size: 28px;
      }
    }