.technical-hero:after{background:linear-gradient(90deg,rgba(5,20,41,.18),rgba(6,29,57,.9))}
.technical-page{padding:32px 0 54px;background:var(--page-bg)}
.technical-shell{display:grid;gap:24px}
.technical-icon{width:24px;height:24px;display:inline-grid;place-items:center;flex:none;color:var(--navy)}
.technical-icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.technical-jumps{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;padding:16px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}
.technical-jumps a{min-height:74px;display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;border:1px solid var(--line);border-radius:9px;background:var(--surface-soft);color:var(--ink);font-weight:700;text-decoration:none;transition:border-color .18s,background .18s,transform .18s,box-shadow .18s}
.technical-jumps a:hover,.technical-jumps a:focus-visible{border-color:var(--navy);background:var(--surface);box-shadow:0 8px 22px #00025712;transform:translateY(-2px);outline:none}
.technical-jumps a,.technical-section{scroll-margin-top:110px}
.technical-calculator{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(0,1.28fr);gap:28px;padding:30px;border:1px solid var(--orange);border-radius:11px;background:var(--surface)}
.calculator-copy h2,.technical-heading h2{margin:0;color:var(--ink);font-size:1.65rem;line-height:1.5}
.calculator-copy>p{margin:8px 0 0;color:var(--muted);line-height:1.9}
.calculator-copy .calculator-note{margin-top:18px;padding-top:16px;border-top:1px solid var(--line);font-size:.84rem}
.calculator-form{display:grid;grid-template-columns:1fr;gap:13px;padding:20px;border-radius:9px;background:var(--surface-soft)}
.calculator-form label{display:flex;flex-direction:column;gap:7px;color:var(--ink);font-size:.88rem;font-weight:700}
.calculator-form select,.calculator-form input{width:100%;height:48px;padding:0 12px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);font:inherit;outline:none}
.calculator-form select:focus,.calculator-form input:focus{border-color:var(--navy);box-shadow:0 0 0 3px #00025712}
.calculator-form button{grid-column:1/-1;height:48px;border:1px solid var(--orange);border-radius:8px;background:var(--orange);color:#fff;font:700 1rem Peyda,Tahoma,sans-serif;cursor:pointer;transition:background .18s,box-shadow .18s,transform .18s}
.calculator-form button:hover,.calculator-form button:focus-visible{background:#e65f18;box-shadow:0 8px 20px #f3702430;transform:translateY(-1px);outline:none}
#calc-result{grid-column:1/-1;min-height:78px;display:grid;place-items:center;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}
#calc-result strong{color:var(--navy);font-size:1.65rem;text-align:center}
.technical-library{display:grid;gap:12px;padding:28px;border:1px solid var(--line);border-radius:11px;background:var(--surface)}
.technical-heading{display:block;margin-bottom:8px}
.technical-section{border:1px solid var(--line);border-radius:9px;background:var(--surface);overflow:hidden}
.technical-section summary{min-height:76px;display:flex;align-items:center;gap:12px;padding:14px 18px;cursor:pointer;list-style:none;transition:background .18s,border-color .18s,box-shadow .18s}.technical-section summary::-webkit-details-marker{display:none}
.technical-section summary:hover,.technical-section summary:focus-visible{background:var(--surface-soft);box-shadow:inset 3px 0 0 var(--navy);outline:none}
.technical-section summary>span:nth-child(2){display:grid;gap:2px}.technical-section summary b{color:var(--ink);font-size:1.04rem}.technical-section summary small{color:var(--muted);font-size:.8rem}.technical-section summary i{margin-right:auto;color:var(--muted);font-style:normal;transition:transform .2s}.technical-section[open] summary i{transform:rotate(180deg)}
.technical-section[open] summary{border-bottom:1px solid var(--line)}.technical-section-body{padding:18px}
.technical-section table{width:100%;border-collapse:separate;border-spacing:0;color:var(--ink);font-size:.9rem}.technical-section th,.technical-section td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:right}.technical-section th{background:var(--surface-soft);color:var(--ink);font-weight:700}.technical-section tbody tr:last-child td{border-bottom:0}.technical-section tbody tr:hover td{background:color-mix(in srgb,var(--surface-soft) 60%,transparent)}
.table-title{margin:0 0 10px;color:var(--ink);font-size:1rem}.table-title-spaced{margin-top:24px}
.installation-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}.installation-grid>div{padding:16px;border:1px solid var(--line);border-radius:8px}.installation-grid h3{margin:0 0 10px;color:var(--ink);font-size:1rem}.technical-list{margin:0;padding:0 18px 0 0;color:var(--muted)}.technical-list li{margin:8px 0;line-height:1.8}.technical-list b{color:var(--ink)}
[data-theme=dark] .technical-jumps a:hover,[data-theme=dark] .technical-jumps a:focus-visible{border-color:#8fa7ff}
.technical-back-to-top{position:fixed;z-index:34;right:22px;bottom:22px;width:42px;height:42px;display:grid;place-items:center;border:1px solid var(--line);border-radius:9px;background:var(--surface);color:var(--navy);box-shadow:0 8px 22px #00025718;cursor:pointer;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,visibility .2s,transform .2s,border-color .2s,color .2s}
.technical-back-to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.technical-back-to-top:hover,.technical-back-to-top:focus-visible{border-color:var(--orange);color:var(--orange);outline:none}
.technical-back-to-top svg{width:21px;height:21px;fill:none;stroke:currentColor;stroke-width:1.9;stroke-linecap:round;stroke-linejoin:round}
@media(max-width:1050px){.technical-jumps{grid-template-columns:repeat(3,1fr)}.technical-calculator{grid-template-columns:1fr}.installation-grid{grid-template-columns:1fr 1fr}}
@media(max-width:900px){.technical-page{padding-top:18px}.technical-jumps{grid-template-columns:1fr 1fr}.installation-grid{grid-template-columns:1fr}}
@media(max-width:560px){.technical-page{padding:10px 0 30px}.technical-shell{width:calc(100% - 16px);gap:12px}.technical-jumps{grid-template-columns:1fr 1fr;padding:10px;gap:8px}.technical-jumps a{min-height:62px;justify-content:flex-start;font-size:.84rem}.technical-calculator,.technical-library{padding:18px 12px}.calculator-copy h2,.technical-heading h2{font-size:1.25rem}.calculator-form{grid-template-columns:1fr;padding:13px}.calculator-form button,#calc-result{grid-column:auto}#calc-result{min-height:64px}#calc-result strong{font-size:1.5rem}.technical-section summary{min-height:64px;padding:10px 12px}.technical-section summary small{line-height:1.45}.technical-section-body{padding:6px}.technical-section table,.technical-section thead,.technical-section tbody,.technical-section tr,.technical-section th,.technical-section td{display:block}.technical-section thead{display:none}.technical-section tr{padding:5px 9px;border-bottom:1px solid var(--line)}.technical-section tbody tr:last-child{border-bottom:0}.technical-section td{display:flex;justify-content:flex-start;align-items:baseline;gap:7px;padding:4px 0;border:0;text-align:right;line-height:1.55}.technical-section td:before{content:attr(data-label);flex:0 0 88px;color:var(--muted);text-align:right}.installation-grid{gap:8px;margin-top:8px}.installation-grid>div{padding:10px}.technical-list li{margin:4px 0;line-height:1.65}.table-title{margin:4px 4px 8px}.table-title-spaced{margin-top:14px}}
@media(max-width:560px){.technical-back-to-top{right:12px;bottom:80px;width:38px;height:38px;border-radius:8px}}