:root{--blue:#0e65af;--ink:#111827;--mute:#6b7280;--line:#e5e7eb;--soft:#f5f7fa;--tabs:60px}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.45 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--ink);background:#fff;padding-bottom:calc(var(--tabs) + env(safe-area-inset-bottom))}
a{color:var(--blue)}
svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round;flex:0 0 auto}
button{font:inherit;cursor:pointer}
[hidden]{display:none !important}

.iva-splash{position:fixed;inset:0;z-index:100;background:#fff;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;transition:opacity .35s ease}
.iva-splash img{width:204px;height:auto}
.iva-splash p{margin:8px 0 0;font-size:18px;font-weight:600;letter-spacing:.02em}
.iva-splash small{position:absolute;bottom:calc(36px + env(safe-area-inset-bottom));color:var(--mute);font-size:13px}
.iva-splash.is-out{opacity:0;pointer-events:none}

.iva-top{position:sticky;top:0;z-index:20;background:#fff;border-bottom:1px solid var(--line);padding:calc(8px + env(safe-area-inset-top)) 14px 10px}
.iva-top__row{display:flex;align-items:center;gap:6px;min-height:36px}
.iva-brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink)}
.iva-brand img{width:88px;height:auto;display:block}
.iva-brand span{white-space:nowrap;font-weight:600;font-size:14px;color:var(--mute);border-left:1px solid var(--line);padding-left:10px}
.iva-get{margin-left:auto;display:inline-flex;align-items:center;gap:5px;background:var(--blue);color:#fff;border:0;border-radius:999px;padding:7px 12px;font-size:13px;font-weight:600;white-space:nowrap}
.iva-get svg{width:16px;height:16px}
.iva-back{background:none;border:0;padding:4px;margin-left:-6px;color:var(--ink);display:flex}
.iva-search{display:flex;align-items:center;gap:8px;margin-top:8px;background:var(--soft);border:1px solid var(--line);border-radius:10px;padding:0 12px;color:var(--mute)}
.iva-search svg{width:18px;height:18px}
.iva-search input{flex:1;border:0;background:none;font:inherit;font-size:16px;padding:10px 0;color:var(--ink);outline:0;min-width:0}

.iva-install{display:flex;align-items:center;gap:10px;margin:10px 14px 0;padding:10px 12px;border:1px solid var(--line);border-radius:10px;background:#fff}
.iva-install img{border-radius:8px;border:1px solid var(--line)}
.iva-install div{flex:1;line-height:1.25;font-size:13px;color:var(--mute)}
.iva-install b{display:block;color:var(--ink);font-size:14px}
.iva-install__go{background:var(--blue);color:#fff;border:0;border-radius:8px;padding:8px 14px;font-weight:600}
.iva-install__x{background:none;border:0;font-size:22px;color:var(--mute);padding:0 2px}

.iva-main{padding:6px 14px 20px;max-width:760px;margin:0 auto;outline:0}
.iva-loading,.iva-empty{color:var(--mute);text-align:center;padding:40px 0}
.iva-h1{font-size:20px;margin:14px 0 4px}
.iva-lead{color:var(--mute);margin:0 0 14px}
.iva-h2{font-size:16px;margin:22px 0 8px}
.iva-h2 small{font-weight:400;color:var(--mute);font-size:13px;margin-left:6px}

.iva-chips{display:flex;gap:8px;overflow-x:auto;padding:10px 0 4px;margin:0 -14px;padding-left:14px;padding-right:14px;scrollbar-width:none}
.iva-chips::-webkit-scrollbar{display:none}
.iva-chip{flex:0 0 auto;border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 14px;font-size:14px;color:var(--ink);text-decoration:none}
.iva-chip.is-on{background:var(--ink);border-color:var(--ink);color:#fff}

.iva-tiles{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 0 4px}
.iva-tile{display:flex;flex-direction:column;gap:2px;border:1px solid var(--line);border-radius:12px;padding:14px;text-decoration:none;color:var(--ink);background:#fff}
.iva-tile b{font-size:15px}
.iva-tile span{font-size:13px;color:var(--mute)}
.iva-tile svg{color:var(--blue);margin-bottom:6px}
.iva-tiles .iva-tile:last-child:nth-child(odd){grid-column:1/-1}

.iva-group{margin-top:18px}
.iva-group__h{display:flex;align-items:baseline;justify-content:space-between;gap:8px;margin:0 0 6px}
.iva-group__h h2{font-size:16px;margin:0}
.iva-group__h span{font-size:13px;color:var(--mute)}
.iva-list{list-style:none;margin:0;padding:0;border:1px solid var(--line);border-radius:12px;overflow:hidden}
.iva-list li+li{border-top:1px solid var(--line)}
.iva-row{display:flex;align-items:center;gap:12px;padding:10px 12px;text-decoration:none;color:var(--ink)}
.iva-row img{width:56px;height:56px;object-fit:contain;border-radius:8px;background:var(--soft);flex:0 0 56px}
.iva-row div{flex:1;min-width:0}
.iva-row b{display:block;font-size:14px}
.iva-row span{display:block;font-size:13px;color:var(--mute);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.iva-row svg{width:18px;height:18px;color:#9ca3af}
.iva-more{display:block;width:100%;background:var(--soft);border:0;border-top:1px solid var(--line);padding:10px;color:var(--blue);font-weight:600;font-size:14px}

.iva-gal{position:relative;margin:10px 0 0}
.iva-gal__track{display:flex;overflow-x:auto;scroll-snap-type:x mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch}
.iva-gal__track::-webkit-scrollbar{display:none}
.iva-gal__track img{flex:0 0 100%;width:100%;height:300px;object-fit:contain;scroll-snap-align:center;background:#fff}
.iva-gal__n{position:absolute;top:10px;right:10px;background:rgba(17,24,39,.7);color:#fff;font-size:12px;font-weight:600;border-radius:999px;padding:3px 9px}
.iva-gal__dots{display:flex;justify-content:center;gap:6px;padding:10px 0 0;flex-wrap:wrap}
.iva-gal__dots i{width:7px;height:7px;border-radius:50%;background:#d1d5db}
.iva-gal__dots i.is-on{background:var(--blue)}
.iva-gal__nav{position:absolute;top:150px;transform:translateY(-50%);width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:rgba(255,255,255,.92);display:flex;align-items:center;justify-content:center;padding:0;color:var(--ink)}
.iva-gal__nav svg{width:18px;height:18px}
.iva-gal__nav--prev{left:8px}.iva-gal__nav--next{right:8px}
.iva-ref{display:inline-block;font:600 13px/1 ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--soft);border:1px solid var(--line);border-radius:6px;padding:6px 8px;margin-top:10px;color:var(--ink)}
.iva-prod h1{font-size:18px;line-height:1.3;margin:10px 0 6px}
.iva-prod p{color:#374151;margin:0 0 6px}
.iva-specs{width:100%;border-collapse:collapse;font-size:14px;margin-top:6px}
.iva-specs th,.iva-specs td{text-align:left;vertical-align:top;padding:8px 0;border-top:1px solid var(--line)}
.iva-specs th{width:40%;font-weight:500;color:var(--mute);padding-right:12px}
.iva-docs{list-style:none;margin:0;padding:0}
.iva-doc{display:flex;align-items:center;gap:12px;padding:12px;border:1px solid var(--line);border-radius:10px;text-decoration:none;color:var(--ink);margin-bottom:8px}
.iva-doc svg{color:var(--blue)}
.iva-doc div{flex:1;min-width:0}
.iva-doc small{display:block;color:var(--mute);font-size:12px}
.iva-link{display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;text-decoration:none}
.iva-link svg{width:16px;height:16px}

.iva-card{border:1px solid var(--line);border-radius:12px;padding:14px;margin-bottom:12px}
.iva-card__h{display:flex;align-items:center;gap:10px;margin-bottom:4px}
.iva-card__h svg{color:var(--blue)}
.iva-card__h b{font-size:16px}
.iva-card__h em{font-style:normal;font-size:12px;color:var(--mute);margin-left:auto}
.iva-card p{margin:0 0 10px;color:#374151;font-size:14px}
.iva-card .iva-note{font-size:13px;color:var(--mute);margin-top:10px}
.iva-btns{display:flex;flex-wrap:wrap;gap:8px}
.iva-btn{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--blue);color:var(--blue);background:#fff;border-radius:8px;padding:9px 12px;font-size:14px;font-weight:600;text-decoration:none}
.iva-btn--go{background:var(--blue);color:#fff}
.iva-btn svg{width:16px;height:16px}

.iva-series{display:grid;gap:12px}
.iva-series .iva-card{margin:0}
.iva-tag{display:inline-block;font-size:12px;font-weight:600;color:var(--blue);background:#eaf2fa;border-radius:6px;padding:3px 7px;margin-left:auto}
.iva-series dl{margin:8px 0 0;display:grid;grid-template-columns:38% 1fr;font-size:14px}
.iva-series dt,.iva-series dd{margin:0;padding:7px 0;border-top:1px solid var(--line)}
.iva-series dt{color:var(--mute)}
.iva-series .iva-best{font-size:13px;color:var(--mute);margin:2px 0 0}

.iva-steps{margin:8px 0 0;padding-left:20px;font-size:14px;color:#374151}
.iva-steps li{margin-bottom:6px}
.iva-faq details{border-top:1px solid var(--line);padding:12px 0}
.iva-faq details:last-child{border-bottom:1px solid var(--line)}
.iva-faq summary{font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:10px}
.iva-faq summary::-webkit-details-marker{display:none}
.iva-faq summary::after{content:"+";color:var(--mute);font-weight:400;font-size:18px;line-height:1}
.iva-faq details[open] summary::after{content:"\2212"}
.iva-faq p{margin:8px 0 0;color:#374151;font-size:14px}
.iva-contact{display:grid;grid-template-columns:1.5fr 1fr;gap:8px;margin-top:10px}
.iva-contact .iva-btn{white-space:nowrap;padding:10px 8px}
.iva-contact .iva-btn{justify-content:center}

.iva-foot{text-align:center;padding:8px 14px 18px;font-size:13px;color:var(--mute)}
.iva-foot a{color:var(--mute);text-decoration:none}
.iva-foot b{color:var(--ink);font-weight:600}

.iva-tabs{position:fixed;left:0;right:0;bottom:0;z-index:30;display:flex;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}
.iva-tabs a{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;height:var(--tabs);font-size:11px;color:var(--mute);text-decoration:none}
.iva-tabs a.is-on{color:var(--blue);font-weight:600}

.iva-sheet-bg{position:fixed;inset:0;z-index:60;background:rgba(0,0,0,.45);display:flex;align-items:flex-end;justify-content:center}
.iva-sheet{background:#fff;width:100%;max-width:440px;border-radius:14px 14px 0 0;padding:20px 20px calc(24px + env(safe-area-inset-bottom));font-size:15px}
.iva-sheet h3{display:flex;align-items:center;gap:10px;margin:0 0 6px;font-size:18px}
.iva-sheet h3 img{width:44px;height:44px;border-radius:9px;border:1px solid var(--line)}
.iva-sheet ol{margin:12px 0 16px;padding-left:22px}
.iva-sheet li{margin-bottom:8px}
.iva-sheet .iva-btn{width:100%;justify-content:center}
.iva-prog{height:8px;background:#e5e7eb;border-radius:4px;overflow:hidden;margin:16px 0 6px}
.iva-prog i{display:block;height:100%;width:0;background:var(--blue);transition:width 6s cubic-bezier(.15,.75,.3,1)}
.iva-pct{font-size:13px;color:var(--mute);margin-bottom:14px}

@media (min-width:700px){
  .iva-tiles{grid-template-columns:repeat(4,1fr)}
  .iva-series{grid-template-columns:1fr 1fr}
  .iva-sheet-bg{align-items:center}.iva-sheet{border-radius:14px}
}

/* Edge to edge on phones: lists, cards and documents run the full width, separated by hairlines. */
@media (max-width:699px){
  .iva-top{border-bottom-color:transparent;box-shadow:0 1px 0 var(--line)}
  .iva-install{margin:0;border-radius:0;border-left:0;border-right:0;border-top:0}
  .iva-list,.iva-card,.iva-series .iva-card{margin-left:-14px;margin-right:-14px;border-radius:0;border-left:0;border-right:0}
  .iva-card{margin-bottom:0;padding:16px 14px}
  .iva-card+.iva-card,.iva-series .iva-card+.iva-card{border-top:0}
  .iva-series{gap:0}
  .iva-docs{margin:0 -14px;border-top:1px solid var(--line)}
  .iva-doc{margin:0;border-radius:0;border:0;border-bottom:1px solid var(--line);padding:14px}
  .iva-gal{margin-left:-14px;margin-right:-14px}
  .iva-tiles{gap:8px}
  .iva-faq{margin:0 -14px}
  .iva-faq details{padding:14px}
}
@media (max-width:420px){.iva-get__long{display:none}.iva-brand{gap:8px}.iva-brand span{font-size:13px;padding-left:8px}}
/* Firmware finder + downloads jump chips */
.iva-h2[id]{scroll-margin-top:120px}
.iva-jump{margin-top:-6px;margin-bottom:6px}
button.iva-chip{font:inherit;font-size:14px;cursor:pointer}
.iva-doc small{overflow-wrap:anywhere}
.iva-fw b{display:block;font-weight:600;font-size:14.5px;line-height:1.35}
.iva-fw small{margin-top:3px}
.iva-fw-search{margin:0 0 4px}
.iva-fw-search input::-webkit-search-cancel-button{-webkit-appearance:none}
.iva-note{margin:12px 0 4px;padding:10px 12px;background:#fff8e6;border-left:3px solid #e0a100;border-radius:6px;font-size:13.5px;line-height:1.45;color:#5b4a1a}