.ivk{max-width:1100px;margin:30px auto;padding:0 16px;font-family:system-ui,sans-serif}
.ivk-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;
  padding:14px 20px;border-radius:12px 12px 0 0;color:#fff;
  background:linear-gradient(90deg,#22801f,#3aa935 50%,#1fa8c9)}
.ivk-top h2{margin:0;font-size:22px}
.ivk-btn{background:#fff;color:#22801f;font-weight:700;padding:10px 18px;
  border-radius:8px;text-decoration:none}
.ivk-btn:hover{background:#e8f6ef}
.ivk-view{width:100%;height:85vh;border:0;display:block;background:#eef7fb;
  border-radius:0 0 12px 12px;box-shadow:0 8px 24px rgba(27,79,140,.2)}