.wec-timeline {
    --wec-blue: #315f9f;
    --wec-light-blue: #eef5fb;
    --wec-dark: #1d2b3a;
    --wec-border: #d9e4ef;
    --wec-gold: #d7a94b;
    max-width: 1100px;
    margin: 50px auto;
    padding: 0 20px;
  }
  
  .wec-timeline * {
    box-sizing: border-box;
  }
  
  .wec-timeline__intro {
    text-align: center;
    margin-bottom: 30px;
  }
  
  .wec-timeline__intro h2 {
    color: var(--wec-blue);
    font-size: clamp(2rem, 4vw, 3rem);
    margin: 0 0 10px;
  }
  
  .wec-timeline__intro p {
    max-width: 720px;
    margin: 0 auto;
    color: var(--wec-dark);
    font-size: 1.1rem;
  }
  
  .wec-timeline__filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 35px;
  }
  
  .wec-filter {
    border: 1px solid var(--wec-blue);
    background: #fff;
    color: var(--wec-blue);
    padding: 10px 18px;
    border-radius: 999px;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.25s ease;
  }
  
  .wec-filter:hover,
  .wec-filter.active {
    background: var(--wec-blue);
    color: #fff;
  }
  
  .wec-timeline__list {
    position: relative;
  }
  
  .wec-timeline__list:before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 105px;
    width: 3px;
    background: var(--wec-border);
  }
  
  .wec-item {
    position: relative;
    margin-bottom: 18px;
    padding-left: 150px;
  }
  
  .wec-item:before {
    content: "";
    position: absolute;
    left: 96px;
    top: 25px;
    width: 21px;
    height: 21px;
    background: var(--wec-gold);
    border: 4px solid #fff;
    border-radius: 50%;
    box-shadow: 0 0 0 2px var(--wec-border);
    z-index: 2;
  }
  
  .wec-item.is-hidden {
    display: none;
  }
  
  .wec-item__toggle {
    width: 100%;
    text-align: left;
    border: 1px solid var(--wec-border);
    background: #fff;
    border-radius: 14px;
    padding: 20px 55px 20px 24px;
    cursor: pointer;
    box-shadow: 0 8px 25px rgba(29, 43, 58, 0.08);
    position: relative;
    transition: all 0.25s ease;
  }
  
  .wec-item__toggle:hover {
    border-color: var(--wec-blue);
    transform: translateY(-2px);
  }
  
  .wec-item__toggle:after {
    content: "+";
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--wec-blue);
    font-size: 2rem;
    line-height: 1;
  }
  
  .wec-item.is-open .wec-item__toggle:after {
    content: "−";
  }
  
  .wec-year {
    display: block;
    color: var(--wec-blue);
    font-size: 1.65rem;
    line-height: 1.1;
    font-weight: 800;
    margin-bottom: 6px;
  }
  
  .wec-title {
    display: block;
    color: var(--wec-dark);
    font-size: 1.05rem;
    font-weight: 700;
  }
  
  .wec-item__content {
    display: none;
    background: var(--wec-light-blue);
    border: 1px solid var(--wec-border);
    border-top: 0;
    border-radius: 0 0 14px 14px;
    padding: 22px 28px;
  }
  
  .wec-item.is-open .wec-item__content {
    display: block;
  }
  
  .wec-item__content ul {
    margin: 0;
    padding-left: 20px;
  }
  
  .wec-item__content li {
    margin-bottom: 10px;
    color: var(--wec-dark);
    line-height: 1.55;
  }
  
  .wec-item__content li:last-child {
    margin-bottom: 0;
  }
  
  @media (max-width: 767px) {
    .wec-timeline__list:before {
      left: 15px;
    }
  
    .wec-item {
      padding-left: 45px;
    }
  
    .wec-item:before {
      left: 6px;
    }
  
    .wec-item__toggle {
      padding: 18px 48px 18px 18px;
    }
  
    .wec-year {
      font-size: 1.4rem;
    }
  }