.leg-moves-cover {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 700px;
    margin: 20px auto;
    padding: clamp(20px, 6vw, 40px);
    background: linear-gradient(rgba(0,0,0,0.55), rgba(0,0,0,0.85)),
                url('https://via.placeholder.com/700x400/333/fff?text=Leg+Day') no-repeat center center;
    background-size: cover;
    color: white;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.4);
    position: relative;
    overflow: hidden;
    text-align: center;
  }

  .cover-title {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: clamp(8px, 2vw, 16px);
    margin: 0 0 clamp(10px, 3vw, 20px);
  }

  .cover-title .num {
    font-size: clamp(48px, 14vw, 96px);
    font-weight: 900;
    line-height: 1;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.6);
  }

  .cover-title .text {
    font-size: clamp(28px, 9vw, 52px);
    font-weight: bold;
    line-height: 1.1;
    text-transform: uppercase;
    text-align: left;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
    color: #4a90e2;
  }

  .cover-subtitle {
    font-size: clamp(14px, 4vw, 18px);
    line-height: 1.5;
    max-width: 90%;
    margin: 0 auto clamp(15px, 4vw, 25px);
    padding: clamp(12px, 3vw, 16px);
    background-color: rgba(255,255,255,0.12);
    border-radius: 10px;
    backdrop-filter: blur(6px);
  }

  .cover-subtitle::before {
    content: "▶ ";
    color: #ff6b6b;
    font-weight: bold;
    display: inline;
  }

  .cover-author {
    font-size: clamp(12px, 3.2vw, 14px);
    opacity: 0.9;
    font-style: italic;
    letter-spacing: 0.5px;
    line-height: 1.4;
  }
@media (max-width: 600px) {
    .cover-title {
      flex-direction: column;
      align-items: center;
      gap: 8px;
    }
    .cover-title .text {
      text-align: center;
    }
  }

.leg-intro {
    font-family: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    max-width: 100%;
    margin: 30px auto;
    padding: 25px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.08);
    color: #2c3e50;
    line-height: 1.7;
    font-size: clamp(16px, 4vw, 18px);
  }

  .leg-intro p {
    margin: 0 0 18px;
  }

  .leg-intro .strong-rule {
    background: #e3f2fd;
    border-left: 4px solid #2196f3;
    padding: 14px 16px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
    font-weight: bold;
    font-size: 19px;
    color: #0d47a1;
    text-align: center;
  }

  .leg-intro .highlight {
    background-color: #fff8e1;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
    color: #e65100;
  }

  .leg-intro .expert-box {
    background: #f9f9f9;
    border: 1px solid #eee;
    border-radius: 10px;
    padding: 18px;
    margin-top: 24px;
    font-style: italic;
    font-size: 16px;
  }

  .leg-intro .expert-name {
    font-weight: bold;
    color: #c62828;
    display: block;
    margin-top: 8px;
    font-style: normal;
  }

  @media (max-width: 600px) {
    .leg-intro {
      padding: 5px;
    }
    .leg-intro .strong-rule {
      font-size: 17px;
      padding: 12px 10px;
    }
  }

.leg-workout-guide {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    max-width: 100%;
    margin: 30px auto;
    padding: 25px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    color: #2c3e50;
    line-height: 1.65;
  }

  .leg-workout-guide h1 {
    text-align: center;
    color: #c0392b;
    margin-bottom: 30px;
    font-size: 28px;
    text-transform: uppercase;
    letter-spacing: -0.5px;
  }

  .exercise {
    margin-bottom: 35px;
    padding-bottom: 25px;
    border-bottom: 1px dashed #eee;
  }

  .exercise:last-child {
    border-bottom: none;
    margin-bottom: 10px;
    padding-bottom: 0;
  }

  .exercise-title {
    font-size: 20px;
    font-weight: bold;
    color: #2980b9;
    margin-bottom: 10px;
  }

  .why-it-works {
    font-weight: bold;
    color: #27ae60;
    margin: 12px 0 8px;
  }

  .how-to-do {
    margin-top: 8px;
  }

  

  .rule-box {
    background: #fdf0f0;
    border: 2px solid #e74c3c;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    font-weight: bold;
    font-size: 22px;
    color: #c0392b;
    margin-top: 30px;
    letter-spacing: 1px;
    line-height: 1.3;
  }

  @media (max-width: 600px) {
    .leg-workout-guide {
      padding: 18px;
    }
    .exercise-title {
      font-size: 18px;
    }
    .rule-box {
      font-size: 18px;
      padding: 15px;
    }
  }