/* SEO-посадочные «Шкафы управления» (chastotnik.by) */
.shu{--shu-blue:#206098;--shu-accent:#01b0e3;--shu-ink:#1f2a37;--shu-muted:#5b6b7f;--shu-line:#dbe4ee;--shu-soft:#f3f7fb;
  color:var(--shu-ink);font-size:15px;line-height:1.6;margin:6px 0 24px}
.shu *{box-sizing:border-box}
.shu h2{font-size:22px;line-height:1.3;margin:34px 0 12px;color:var(--shu-ink);font-weight:700}
.shu h3{font-size:17px;line-height:1.35;margin:20px 0 8px;color:var(--shu-ink);font-weight:700}
.shu p{margin:0 0 12px}
.shu ul,.shu ol{margin:0 0 14px;padding-left:22px}
.shu li{margin:0 0 6px}
.shu a{color:var(--shu-blue)}
.shu a:hover{color:var(--shu-accent)}

/* первый экран */
.shu-hero{background:linear-gradient(135deg,#f3f8fd 0%,#e8f1fa 100%);border:1px solid var(--shu-line);border-radius:12px;padding:22px 24px;margin:0 0 22px}
.shu-lead{font-size:16px;line-height:1.65;margin:0 0 16px}
.shu-facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:10px;list-style:none;padding:0;margin:0 0 18px}
.shu-facts li{background:#fff;border:1px solid var(--shu-line);border-radius:8px;padding:10px 12px;margin:0;font-size:14px;line-height:1.4}
.shu-facts b{display:block;color:var(--shu-blue);font-size:15px}
.shu-cta-row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.shu .shu-btn{display:inline-block;background:var(--shu-blue);color:#fff;text-decoration:none;font-weight:700;border-radius:8px;padding:11px 20px;font-size:15px;line-height:1.2;border:2px solid var(--shu-blue);cursor:pointer}
.shu .shu-btn:hover{background:var(--shu-accent);border-color:var(--shu-accent);color:#fff}
.shu .shu-btn-ghost{background:#fff;color:var(--shu-blue)}
.shu .shu-btn-ghost:hover{background:#fff;color:var(--shu-accent)}

/* оглавление */
.shu-toc{border-left:4px solid var(--shu-blue);background:var(--shu-soft);border-radius:0 8px 8px 0;padding:12px 16px;margin:0 0 8px}
.shu-toc b{display:block;margin:0 0 6px}
.shu-toc ol{columns:2 240px;margin:0;padding-left:20px}
.shu-toc li{margin:0 0 4px;break-inside:avoid}

/* карточки типов/кейсов */
.shu-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:12px;margin:0 0 10px}
.shu-card{display:block;background:#fff;border:1px solid var(--shu-line);border-radius:10px;padding:14px 16px;text-decoration:none;color:var(--shu-ink);transition:box-shadow .15s,border-color .15s}
.shu a.shu-card{color:var(--shu-ink)}
.shu a.shu-card:hover{border-color:var(--shu-blue);box-shadow:0 4px 14px rgba(32,96,152,.14);color:var(--shu-ink)}
.shu-card strong{display:block;color:var(--shu-blue);font-size:15px;line-height:1.35;margin:0 0 6px}
.shu-card span{display:block;font-size:13.5px;line-height:1.45;color:var(--shu-muted)}
.shu-card img{display:block;width:100%;height:150px;object-fit:contain;background:#fff;margin:0 0 10px}

/* таблицы */
.shu-table-wrap{overflow-x:auto;margin:0 0 14px;border:1px solid var(--shu-line);border-radius:8px}
.shu table{border-collapse:collapse;width:100%;min-width:520px;font-size:14px}
.shu th,.shu td{border-bottom:1px solid var(--shu-line);padding:9px 12px;text-align:left;vertical-align:top}
.shu th{background:var(--shu-soft);font-weight:700;color:var(--shu-ink)}
.shu tr:last-child td{border-bottom:0}

/* шаги */
.shu-steps{counter-reset:s;list-style:none;padding:0}
.shu-steps li{counter-increment:s;position:relative;padding:2px 0 10px 44px;margin:0}
.shu-steps li:before{content:counter(s);position:absolute;left:0;top:0;width:30px;height:30px;border-radius:50%;background:var(--shu-blue);color:#fff;font-weight:700;text-align:center;line-height:30px}

/* подсказка / чек-лист */
.shu-note{background:#fff8e6;border:1px solid #f1d9a0;border-radius:8px;padding:12px 16px;margin:0 0 14px}
.shu-check{list-style:none;padding:0;columns:2 280px}
.shu-check li{position:relative;padding-left:24px;break-inside:avoid}
.shu-check li:before{content:"\2714";position:absolute;left:0;color:var(--shu-blue);font-weight:700}

/* FAQ */
.shu-faq details{border:1px solid var(--shu-line);border-radius:8px;margin:0 0 8px;background:#fff}
.shu-faq summary{cursor:pointer;padding:12px 16px;font-weight:700;list-style:none;position:relative;padding-right:40px}
.shu-faq summary::-webkit-details-marker{display:none}
.shu-faq summary:after{content:"+";position:absolute;right:16px;top:9px;font-size:20px;color:var(--shu-blue)}
.shu-faq details[open] summary:after{content:"\2212"}
.shu-faq details>div{padding:0 16px 12px}

/* финальный CTA */
.shu-final{background:var(--shu-blue);color:#fff;border-radius:12px;padding:20px 24px;margin:30px 0 10px}
.shu-final h2{color:#fff;margin:0 0 8px}
.shu-final p{color:#e6f0f9}
.shu-final .shu-btn{background:#fff;color:var(--shu-blue);border-color:#fff}
.shu-final .shu-btn:hover{background:var(--shu-accent);color:#fff;border-color:var(--shu-accent)}
.shu-final a{color:#fff}

@media (max-width:767px){
  .shu{font-size:14.5px}
  .shu h2{font-size:19px;margin-top:26px}
  .shu-hero{padding:16px}
  .shu-lead{font-size:15px}
  .shu-toc ol{columns:1}
}