html { box-sizing: border-box; }
    *, *:before, *:after { box-sizing: inherit; }
    
    body{
      font-family: IRANSans, sans-serif;
      background: #f7f8fa;
      margin: 0;
      color: #222;
      line-height: 1.8;
      min-height: 100vh;
    }
    
    
    h2, h2 * {
  font-family: 'IRANSans', sans-serif !important;
}

    /* ==== BEM Container ==== */
    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 18px;
    }
    /* ==== Header ==== */
    .blog-header {
      background: #f1f3f9;
      padding: 2.5rem 0 1.3rem 0;
      border-bottom: 1px solid #e9eaf0;
    }
    .blog-header__wrapper {
      display: flex;
      align-items: center;
      gap: 1.3rem;
      justify-content: space-between;
    }
    .blog-header__logo-box {
      width: 60px; height: 60px;
      border-radius: 50%;
      overflow: hidden;
      box-shadow: 0 2px 10px rgba(30, 60, 170, 0.12);
      background: #fff;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .blog-header__logo {
      width: 100%; height: 100%; object-fit: cover;
      display: block;
    }
    .blog-header__info {
      text-align: right;
    }
    .blog-header__title {
      font-size: 2.2rem;
      margin: 0 0 .3rem 0;
      color: #163184;
      font-weight: 700;
      letter-spacing: -0.5px;
    }
    .blog-header__meta {
      font-size: 1.02rem;
      color: #607d8b;
      margin: 0;
    }
    .blog-header__meta span {
      color: #0d47a1;
      font-weight: 500;
    }
    /* ==== Back Button ==== */
    .blog-header__btn--back {
      background-color: #1976d2;
      border: none;
      cursor: pointer;
      font-size: 1.1rem;
      color: #fff;
      padding: 0.6rem 1.5rem;
      border-radius: 4px;
      transition: background-color 0.3s;
      text-transform: uppercase;
    }
    .blog-header__btn--back:hover {
      background-color: #0d47a1;
    }
    /* ==== Layout ==== */
    .blog-main {
      display: flex;
      gap: 2.2rem;
      padding: 3.2rem 0 2.2rem 0;
      flex-wrap: wrap;
    }
    /* ==== Article ==== */
    .blog-article {
      flex: 1 1 700px;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 2px 12px rgba(60,80,160,.09);
      padding: 2.3rem 2.2rem;
      min-width: 0;
    }
    .blog-article__image {
      width: 100%;
      border-radius: 13px;
      margin-bottom: 2.2rem;
      object-fit: cover;
      box-shadow: 0 2px 8px rgba(50,90,160,0.05);
      max-height: 340px;
      background: #f1f2f7;
    }
    .blog-article__section:not(:first-child) { margin-top: 2.5rem; }
    .blog-article__section h2,.blog-article__section strong{
      color: #1976d2;
      font-size: 1.32rem;
      margin: 0 0 .8rem 0;
      font-weight: 700;
      display: inline;
    }
    .blog-article__section ul {
      padding-right: 1.3rem;
      margin: 0 0 0.5rem 0;
      list-style: disc inside;
      color: #444;
    }
    /* ==== Sidebar ==== */
    .blog-sidebar {
      flex: 1 1 260px;
      min-width: 260px;
      max-width: 340px;
      background: #fff;
      border-radius: 16px;
      box-shadow: 0 2px 8px rgba(80,100,170,.06);
      padding: 2rem 1.3rem 1.4rem 1.3rem;
      display: flex;
      flex-direction: column;
      align-items: center;
      margin-top: 0;
      height: fit-content;
    }
    .blog-sidebar__logo-box {
      width: 54px; height: 54px;
      border-radius: 50%;
      overflow: hidden;
      margin-bottom: .8rem;
      box-shadow: 0 1px 5px rgba(20,40,140,.07);
      background: #eaf1fb;
      display: flex;
      align-items: center;
      justify-content: center;
    }
    .blog-sidebar__logo {
      width: 100%; height: 100%;
      object-fit: cover;
      display: block;
    }
    .blog-sidebar__blogname {
      font-size: 1.09rem;
      font-weight: 700;
      color: #0d47a1;
      margin-bottom: 2.3rem;
      letter-spacing: -.2px;
    }
    .blog-sidebar__title {
      color: #222;
      font-size: 1.01rem;
      font-weight: 600;
      margin-bottom: .8rem;
      letter-spacing: -.2px;
      text-align: right;
      width: 100%;
    }
    .blog-sidebar__list {
      width: 100%;
      padding: 0;
      list-style: none;
      margin: 0;
    }
    .blog-sidebar__item:not(:last-child) { margin-bottom: 10px; }
    .blog-sidebar__link {
      color: #1976d2;
      background: #f7f8fa;
      padding: 0.6em 1em;
      border-radius: .7em;
      display: block;
      transition: background .18s, color .18s;
      font-size: .98em;
      text-decoration: none;
      font-weight: 500;
    }
    .blog-sidebar__link:hover,
    .blog-sidebar__link:focus {
      background: #1976d2;
      color: #fff;
      outline: none;
    }
    .blog-sidebar__list {
  width: 100%;
  padding: 0;
  list-style: none;
  margin: 0;
}
.blog-sidebar__item:not(:last-child) { margin-bottom: 12px; }
.blog-sidebar__link {
  display: flex;
  align-items: center;
  gap: .8em;
  color: #1976d2;
  background: #f7f8fa;
  padding: .55em .9em;
  border-radius: .8em;
  text-decoration: none;
  transition: background .18s, color .18s;
  font-size: .98em;
  font-weight: 500;
}
.blog-sidebar__link:hover,
.blog-sidebar__link:focus {
  background: #1976d2;
  color: #fff;
}
.blog-sidebar__thumb {
  width: 38px;
  height: 38px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: #eaeaea;
  box-shadow: 0 2px 6px rgba(30,60,150,0.07);
}
.blog-sidebar__text {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

    /* ==== Footer ==== */
    .blog-footer {
      text-align: center;
      padding: 2.1rem 0 .7rem 0;
      font-size: 1.02rem;
      color: #999;
      background: #f2f4fa;
      margin-top: 2.2rem;
      border-radius: 13px 13px 0 0;
      letter-spacing: .01em;
    }
    .blog-footer--highlite:hover{
      color: #1976d2;
      cursor: pointer;
      text-decoration: none;
    }
    /* ==== Responsive ==== */
    @media (max-width: 900px) {
      .blog-main { flex-direction: column; gap: 1.3rem; }
      .blog-sidebar {
        flex-direction: row;
        justify-content: flex-start;
        padding: 1.5rem 1rem;
        max-width: 100%;
        min-width: 0;
        border-radius: 13px;
        margin: 0;
      }
      .blog-sidebar__blogname { margin-bottom: 1.1rem; }
      .blog-sidebar__title { font-size: .98rem; }
      .blog-sidebar__logo-box { margin: 0 .7rem .8rem 0; }
    }
    @media (max-width: 600px) {
      .container { padding: 0 3vw; }
      .blog-header__wrapper { flex-direction: column; gap: .6rem; }
      .blog-header__logo-box { width: 46px; height: 46px; }
      .blog-header__title { font-size: 1.25rem; }
      .blog-main { padding: 1.2rem 0 .6rem 0; }
      .blog-article { padding: 1.1rem .7rem; border-radius: 10px; }
      .blog-article__image { border-radius: 9px; }
      .blog-sidebar { border-radius: 10px; padding: 1rem .5rem; }
      .blog-footer { padding: 1rem 0 .5rem 0; font-size: .97rem; }
    }