body {
  margin: 0;
  padding: 0;
  background-color: #f1f1f1 !important;
}

/* Шкала на коефіцієнті 1.2 */
:root {
  --ratio: 1.2;

  /* Покрокове вирахування коефіцієнтів сітки */
  --step-1: var(--ratio);
  --step-2: calc(var(--step-1) * var(--ratio));
  --step-3: calc(var(--step-2) * var(--ratio));
  --step-4: calc(var(--step-3) * var(--ratio));
  --step-5: calc(var(--step-4) * var(--ratio));
  --step-6: calc(var(--step-5) * var(--ratio));
}

/* Базовий текст сайту */
main,
p,
ul,
ol,
li {
  font-size: clamp(1rem, 1vw + 0.5rem, 1.125rem) !important;
  line-height: 1.6 !important;
}

/* Ієрархія заголовків */
h6 {
  font-size: clamp(1rem, 1vw + 0.5rem, calc(1rem * var(--step-1))) !important;
}

h5 {
  font-size: clamp(1.1rem, 1vw + 0.6rem, calc(1rem * var(--step-2))) !important;
}

h4 {
  font-size: clamp(1.2rem, 1vw + 0.7rem, calc(1rem * var(--step-3))) !important;
}

h3 {
  font-size: clamp(1.3rem, 1vw + 0.8rem, calc(1rem * var(--step-4))) !important;
}

h2 {
  font-size: clamp(1.5rem, 2vw + 0.9rem, calc(1rem * var(--step-5))) !important;
}

h1 {
  font-size: clamp(1.75rem, 2vw + 1rem, calc(1rem * var(--step-6))) !important;
}

/* CALCULATORS bar !!!!! */
.hdr6 {
  padding-right: 22px !important;
}

.titli_pw {
  margin: 8px 0 16px;
}

.titli_pw h1 {
  font-weight: 600;
  font-size: clamp(1.25rem, 2vw, 1.75rem);
  text-shadow: 1px 1px 1px white;
  filter: drop-shadow(4px 4px 10px #057);
  padding: 0 4px;
}

.titli_pw img {
  filter: drop-shadow(1px 1px 1px black);
}


.ttle {
  display: flex;
  flex-wrap: wrap;
}

.ttle .l2 {
  display: flex;
  place-items: center;
  justify-content: center;
}

.ttle .l10 {
  display: flex;
  place-items: center;
  justify-content: center;
}

.ttle h3 {
  text-align: center;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  font-weight: 600;
  text-shadow: #057 0 0 16px;
}

.image-iframe {
  max-width: 80px;
  height: auto;
  filter: drop-shadow(1px 1px 1px #666);
}

/* ==================== end title ====================*/

.flex01 {
  display: flex;
  flex-wrap: wrap;
}

.flex1,
.flex1img {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex1img img {
  max-width: 360px;
  height: auto;
}

.flex1 img {
  max-width: 480px;
  height: auto;
}

/* ---- */
.flex961 {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
}

.flex961-image {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex961-image img {
  max-width: 480px;
  height: auto;
}

@media (max-width: 961px) {
  .flex961 {
    flex-wrap: wrap;
  }

  .flex961-text,
  .flex961-image {
    width: 100%;
    flex: 0 0 100%;
  }

  .flex1 img,
  .flex961-image img {
    max-width: 360px;
  }

}

/* code */
.sim800l-connect {
  /* max-width: 900px; */
  margin: 0 auto;
  /* padding: 24px; */
  font-family: "Segoe UI", Tahoma, sans-serif;
  line-height: 1.7;
  color: #222;
}

.sim800l-connect h2,
.sim800l-connect h3 {
  color: #111;
  margin-top: 24px;
  margin-bottom: 12px;
}

.sim800l-connect ul {
  padding-left: 22px;
  margin-bottom: 16px;
}

.sim800l-connect li {
  margin-bottom: 6px;
}

.sim800l-connect .note {
  background: #fff8e1;
  border-left: 4px solid #f4b400;
  padding: 14px 16px;
  margin: 20px 0;
  border-radius: 6px;
}

.code-monokai {
  background: #2d2a2e;
  color: #fcfcfa;
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  border: 1px solid #403e41;
}

.code-monokai code {
  font-family: Consolas, Monaco, "Courier New", monospace;
  white-space: pre;
  display: block;
}

.code-monokai .kwd {
  color: #ff6188;
}

.code-monokai .type {
  color: #78dce8;
}

.code-monokai .fn {
  color: #a9dc76;
}

.code-monokai .str {
  color: #ffd866;
}

.code-monokai .num {
  color: #ab9df2;
}

.code-monokai .com {
  color: #727072;
  font-style: italic;
}

.code-monokai .obj {
  color: #fc9867;
}

.code-monokai .var {
  color: #fcfcfa;
}

.sim800l-connect code:not(.code-monokai code) {
  background: #f3f4f6;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: Consolas, Monaco, monospace;
  font-size: 0.95em;
}

#flex961 img,
#opis img,
#power img,
#antenna img {
  filter: drop-shadow(4px 4px 8px black);
}