/*
Theme Name: Spectronik Rebuilt
Author: Spectronik
Description: Lightweight responsive technical articles theme recreated from the supplied Spectronik PDF. Includes an estimate calculator with explicit model limitations.
Version: 1.5.0
Requires at least: 6.3
Requires PHP: 7.4
License: GPL-2.0-or-later
Text Domain: spectronik-rebuilt
*/
@font-face{font-family:Rubik;src:url(assets/Rubik-Regular.ttf) format('truetype');font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:Rubik;src:url(assets/Rubik-Bold.ttf) format('truetype');font-weight:600 900;font-style:normal;font-display:swap}
:root{--red:#ff171e;--ink:#0a0a0a;--muted:#575757;--line:#ddd;--width:1440px;--blue:#086faa}
*{box-sizing:border-box}body{margin:0;background:#fff;color:var(--ink);font:16px/1.55 Rubik,Arial,sans-serif}a{color:inherit;text-decoration:none}a:hover{color:var(--red)}button,input,select{font:inherit}button,a,input,select{touch-action:manipulation}img{max-width:100%;height:auto;display:block}button{cursor:pointer}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--blue);outline-offset:4px}h1,h2,h3,p{margin-top:0}h1,h2,h3{line-height:1.25}h1{font-size:52px}h2{font-size:32px}h3{font-size:21px}.container{width:min(var(--width),calc(100% - 64px));margin-inline:auto}.skip-link{position:fixed;top:-100px;left:15px;z-index:9999;background:#fff;padding:14px}.skip-link:focus{top:15px}.site-header{border-bottom:2px solid var(--red);background:#fff}.header-inner{min-height:142px;display:flex;align-items:center;justify-content:space-between;padding:26px 66px;gap:30px}.site-logo img{width:470px;max-width:38vw}.main-nav ul,.footer-menu ul{display:flex;list-style:none;gap:44px;padding:0;margin:0}.main-nav a{font-size:19px}.menu-toggle{display:none;background:transparent;border:1px solid #ccc;border-radius:5px;padding:9px 14px}.hero{min-height:525px;background:#e4e7e8 url(assets/articles-hero.webp) center/cover no-repeat;display:flex;align-items:center}.hero-inner{width:min(1542px,calc(100% - 64px));margin:auto}.hero h1{font-size:52px;margin-bottom:12px;text-transform:uppercase}.hero h1::after{content:'';display:block;width:410px;max-width:100%;height:2px;background:var(--red);margin-top:13px}.hero p{max-width:430px;font-size:21px;line-height:1.4;margin-bottom:0}.listing{padding:70px 0 88px}.filter-bar{display:flex;gap:16px;padding-bottom:28px;border-bottom:1px solid var(--line);margin-bottom:72px;align-items:center}.filter-bar label{display:block}.filter-bar input,.filter-bar select{border:1px solid #ccc;border-radius:5px;height:42px;background:#fff;padding:8px 16px;font-size:14px}.filter-bar select{width:272px}.search-field{position:relative}.search-field input{width:272px;padding-right:48px}.search-button{position:absolute;right:0;top:0;height:42px;width:42px;border:0;background:transparent;font-size:22px}.apply-filter{border:1px solid #ccc;background:white;padding:8px 15px;border-radius:4px;font-size:14px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}.article-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));column-gap:72px;row-gap:62px}.article-card{display:flex;flex-direction:column;position:relative;min-width:0}.card-meta{display:flex;gap:20px;font-size:14px;margin-bottom:16px;color:#222}.card-image{position:relative;margin-bottom:19px;display:block;border-radius:17px;overflow:hidden;background:#eee;aspect-ratio:430/247}.card-image img{width:100%;height:100%;object-fit:cover;transition:transform .25s}.card-image:hover img{transform:scale(1.025)}.new-badge{position:absolute;right:0;top:30px;background:var(--red);color:white;font-size:12px;padding:2px 7px;font-weight:700}.article-card h2{font-size:21px;margin-bottom:12px}.card-excerpt{font-size:16px;line-height:1.35;margin-bottom:32px}.card-date{font-size:14px;color:#444;margin-top:auto;padding-top:18px}.article-card:nth-child(n+4)::before{content:'';position:absolute;left:0;right:0;top:-31px;height:1px;background:var(--line)}.pagination{display:flex;justify-content:center;gap:14px;align-items:center;margin-top:80px;flex-wrap:wrap}.pagination .page-numbers{padding:5px 11px}.pagination .current{border:1px solid #888}.site-footer{background:#000;color:#fff;padding:78px 0 62px}.footer-grid{display:grid;grid-template-columns:1fr 1.5fr 1.05fr;gap:60px;align-items:start}.footer-brand img{width:200px;filter:brightness(0) invert(1);margin-bottom:25px}.footer-brand::after{display:none}.footer-brand p{font-size:14px;color:#aaa;line-height:1.4;border-top:2px solid var(--red);padding-top:23px}.footer-menu{padding-top:45px;text-align:center}.footer-menu ul{justify-content:center;gap:30px;flex-wrap:wrap;font-size:18px}.copyright{color:#888;font-size:12px;margin-top:35px}.newsletter h2{font-size:21px;margin-bottom:12px}.newsletter p{font-size:14px;color:#aaa;line-height:1.4}.newsletter input{background:#242424;border:1px solid #444;color:#fff;width:100%;padding:12px;border-radius:5px;font-size:14px}.newsletter a{display:inline-block;border:1px solid #555;padding:10px 14px;border-radius:5px;font-size:14px}.content-wrap{max-width:1000px;margin:65px auto 100px;padding:0 32px}.content-wrap .entry-content{font-size:18px;line-height:1.8}.entry-content a{text-decoration:underline;color:var(--blue)}.entry-content img{height:auto}.post-hero{width:100%;border-radius:16px;margin:30px 0}.post-info{color:var(--muted);font-size:15px}.breadcrumbs{font-size:14px;color:var(--muted);margin-bottom:30px}.entry-content table{width:100%;border-collapse:collapse}.entry-content td,.entry-content th{padding:10px;border:1px solid #ddd}.entry-content pre{overflow:auto}.page-links{margin-top:30px}.empty-state{padding:60px 0}.calc-hero{background:#080808;color:white;padding:80px 0;background-image:linear-gradient(90deg,#080808 38%,transparent),url(assets/calculator-cylinders.webp);background-position:center,right center;background-repeat:no-repeat;background-size:cover,auto 100%}.calc-hero h1{max-width:850px;font-size:46px;text-transform:uppercase}.calc-hero p{max-width:740px;font-size:17px}.model-label{display:inline-block;background:var(--red);padding:7px 14px;font-size:13px;letter-spacing:1px;margin-bottom:25px}.calc-wrap{max-width:1280px;margin:70px auto;padding-inline:32px;color:#183441}.model-note{border-left:3px solid var(--blue);background:#eff7fc;padding:18px 22px;font-size:15px;margin-bottom:40px}.calc-section{margin-bottom:48px;border-bottom:1px solid #dbe5eb;padding-bottom:40px}.eyebrow{font-size:12px;letter-spacing:2px;color:#557f95}.calc-section h2{font-size:26px;margin:10px 0}.calc-section>p{font-size:16px;max-width:650px}.calc-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:22px}.calc-panel{border:1px solid #dbe5eb;border-radius:4px;padding:24px;background:#fff}.calc-panel label{display:block;font-size:14px;font-weight:bold;margin-bottom:18px}.calc-panel input,.calc-panel select{display:block;width:100%;height:45px;border:1px solid #cfdce5;border-radius:3px;padding:8px;margin-top:8px;color:#183441;background:white}.calc-panel input[readonly]{background:#f3f7f9}.calc-panel small{font-weight:400;display:block;color:#557080;margin-top:6px}.calc-result{background:#e6f1f8;border:1px solid #bfdcee;border-radius:4px;padding:24px}.calc-result .value{font-size:48px;line-height:1.2;font-weight:bold;display:inline-block;margin:8px 0}.calc-result .unit{font-size:15px}.result-details{width:100%;border-collapse:collapse;font-size:14px;margin-top:18px}.result-details td{padding:13px 8px;border-bottom:1px solid #e2eaf0}.result-details td:last-child{text-align:right;font-weight:700}.calc-error{color:#b00020;margin:16px 0;min-height:24px}.calc-wrap details{border:1px solid #dbe5eb;padding:20px;border-radius:3px}.calc-wrap summary{cursor:pointer;font-weight:bold}.calc-wrap details p{font-size:15px;margin:18px 0 0}.preview-note{background:#fff6e8;padding:15px 32px;text-align:center;font-size:14px}.reference-hero{display:none}
@media(min-width:1600px){.article-card{min-height:515px}}
@media(max-width:1100px){.header-inner{padding:24px 32px;min-height:100px}.main-nav ul{gap:28px}.hero{min-height:350px}.hero h1{font-size:40px}.hero p{font-size:18px;max-width:340px}.article-grid{gap:45px 28px}.article-card h2{font-size:19px}.card-excerpt{font-size:15px}.footer-grid{gap:28px}.footer-menu ul{font-size:15px;gap:18px}.calc-hero h1{font-size:38px;max-width:650px}}
@media(max-width:760px){.container,.hero-inner{width:calc(100% - 40px)}.header-inner{min-height:82px;padding:20px;flex-wrap:wrap;gap:12px}.site-logo img{width:245px;max-width:65vw}.menu-toggle{display:block}.main-nav{width:100%;display:none}.main-nav.open{display:block}.main-nav ul{flex-direction:column;gap:0;padding-top:12px}.main-nav a{display:block;padding:12px 0}.hero{min-height:310px;background-position:58% center;position:relative}.hero::before{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(236,239,240,.98),rgba(236,239,240,.9) 48%,rgba(236,239,240,.15))}.hero-inner{position:relative}.hero h1{font-size:36px}.hero h1::after{width:230px}.hero p{max-width:260px;font-size:17px}.listing{padding:38px 0 60px}.filter-bar{margin-bottom:38px;flex-wrap:wrap;gap:12px}.filter-bar label,.search-field{flex:1 1 100%}.filter-bar select,.search-field input{width:100%;height:48px}.search-button{height:48px}.article-grid{grid-template-columns:1fr;gap:42px}.article-card:nth-child(n+2)::before{content:'';position:absolute;left:0;right:0;top:-21px;height:1px;background:var(--line)}.card-image{border-radius:12px}.article-card h2{font-size:22px}.card-excerpt{font-size:16px;margin-bottom:15px}.card-date{padding-top:4px}.pagination{margin-top:50px;gap:6px}.footer-grid{grid-template-columns:1fr;gap:28px}.site-footer{padding:45px 0}.footer-brand p{max-width:480px}.footer-menu{padding-top:0;text-align:left}.footer-menu ul{justify-content:flex-start}.copyright{margin-top:20px}.newsletter{max-width:480px}h1{font-size:34px}.content-wrap{margin:40px auto 65px;padding:0 20px}.calc-hero{padding:55px 0;background-size:cover,auto 100%;background-image:linear-gradient(90deg,rgba(0,0,0,.97),rgba(0,0,0,.65)),url(assets/calculator-cylinders.webp)}.calc-hero h1{font-size:31px}.calc-wrap{margin:35px auto;padding:0 20px}.calc-grid{grid-template-columns:1fr;gap:20px}.calc-result .value{font-size:40px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important}}

.brand img{width:470px;max-width:38vw;height:auto}.brand .custom-logo-link{display:block}@media(max-width:760px){.brand img{width:245px;max-width:65vw}}

[hidden]{display:none!important}.filter-status{font-size:14px;color:#555;margin:0 0 18px;min-height:22px}.listing.is-loading #article-results{opacity:.5;pointer-events:none}.listing #article-results{overflow-anchor:none}.topic-nav{border-bottom:1px solid #eee;background:#fff}.topic-nav-inner{display:flex;align-items:center;justify-content:center;gap:38px;min-height:105px;flex-wrap:wrap;padding:20px 0}.topic-nav a{font-size:15px}.topic-search{display:flex;align-items:center;border:1px solid #ccc;border-radius:22px;overflow:hidden;margin-left:30px}.topic-search input{border:0;padding:8px 12px;font-size:13px;width:150px}.topic-search button{background:white;border:0;padding:6px 12px}.technical-layout{display:grid;grid-template-columns:160px minmax(0,1fr);gap:46px;width:min(1440px,calc(100% - 64px));padding-top:105px;padding-bottom:95px}.technical-main{max-width:1110px;min-width:0}.sidebar-sticky{position:sticky;top:25px}.sidebar-topics{display:flex;flex-direction:column;font-size:13px;border-bottom:2px solid #111;padding-bottom:30px;margin-bottom:25px}.sidebar-topics a{padding:9px 12px;border-bottom:1px solid #eee}.sidebar-topics .sidebar-home{background:#eee;font-weight:bold}.article-toc h2{font-size:15px;font-weight:400;margin:0 0 14px}.article-toc ol{list-style:none;padding:0;margin:0}.article-toc li{margin:0 0 11px;line-height:1.4}.article-toc a{font-size:12px;color:#666;display:block}.article-toc a:hover{color:#d00}.technical-title{border-top:1px solid #ddd;padding-top:30px}.technical-title h1{font-size:43px;margin-bottom:18px;max-width:1100px}.technical-main .breadcrumbs{font-size:12px;margin-bottom:20px}.technical-main .post-info{font-size:13px}.technical-main .post-hero{border-radius:14px;max-width:990px;max-height:660px;object-fit:cover;margin:30px 0 48px}.technical-content{font-size:16px;line-height:1.75;max-width:1110px}.technical-content h2{font-size:22px;line-height:1.4;margin:42px 0 17px;scroll-margin-top:30px}.technical-content h3{font-size:19px;margin:28px 0 14px;scroll-margin-top:30px}.technical-content p{margin-bottom:19px}.technical-content ul{padding-left:20px}.technical-content hr{border:0;border-top:1px solid #ddd;margin:15px 0 24px}.technical-gallery{display:grid;grid-template-columns:1.8fr 1fr;gap:18px;margin:38px 0}.technical-gallery img{width:100%;height:100%;object-fit:cover;border-radius:8px}.technical-gallery img:first-child{grid-row:span 2}.video-preview{position:relative;max-width:990px;background:#111;margin:24px 0 36px;border-radius:8px;overflow:hidden}.video-preview img{width:100%;opacity:.7}.video-preview .load-video{position:absolute;top:48%;left:50%;transform:translate(-50%,-50%);background:#d60000;border:0;border-radius:5px;color:#fff;padding:15px 22px;font-size:17px}.video-preview p{position:absolute;bottom:0;left:0;right:0;padding:12px;margin:0;color:white;background:rgba(0,0,0,.65);font-size:13px}.video-preview.is-playing{aspect-ratio:16/9}.video-preview iframe{width:100%;height:100%;border:0;display:block}.spec-table-wrap{overflow-x:auto}.technical-content .spec-table{width:100%;border-collapse:collapse;font-size:14px;line-height:1.5;margin-bottom:35px}.spec-table th,.spec-table td{padding:11px 16px;border:0;border-bottom:1px solid #e4e4e4;text-align:left;vertical-align:top}.spec-table th{width:48%;font-weight:400}.spec-table tr:nth-child(odd){background:#fafafa}.share-links{display:flex;align-items:center;gap:14px;flex-wrap:wrap;font-size:14px}.share-links a{font-weight:bold;border:1px solid #ccc;padding:4px 9px;border-radius:4px}.share-links button{font-size:12px;padding:6px 9px;background:white;border:1px solid #ccc;border-radius:4px}.sidebar-share{margin-top:28px}.sidebar-share .share-links{flex-direction:column;align-items:flex-start;gap:12px}.sidebar-share .share-links>span:first-child{display:none}.article-bottom-share{margin:38px 0 30px}.related-posts{margin-top:55px;padding-top:30px;border-top:1px solid #ddd}.related-posts>h2{font-size:26px;margin-bottom:28px}.related-posts .article-grid{gap:28px}.related-posts .article-card{min-height:0}.related-posts .article-card h2{font-size:17px}.related-posts .card-excerpt{display:none}.related-posts .card-meta{font-size:11px;gap:12px}.related-posts .card-date{font-size:12px}.article-comments{margin-top:65px;border-top:1px solid #ddd;padding-top:25px}.article-comments h2{font-size:24px}.comment-list{list-style:none;padding:0;margin:0}.comment-list .children{list-style:none;margin-left:25px;padding-left:20px;border-left:1px solid #ddd}.comment-body{position:relative;padding:25px 0;border-bottom:1px solid #eee}.comment-author .avatar{float:left;margin-right:15px;border-radius:6px}.comment-meta{font-size:14px}.comment-metadata{font-size:12px;color:#666}.comment-content{margin-top:18px;font-size:15px;line-height:1.6}.comment-reply-link{font-size:13px;color:var(--blue)}.comment-form label{display:block;margin:15px 0 6px;font-size:14px}.comment-form textarea,.comment-form input[type=text],.comment-form input[type=email],.comment-form input[type=url]{width:100%;border:1px solid #ddd;border-radius:5px;padding:12px;font:inherit}.comment-form .submit{background:#111;color:#fff;border:0;padding:12px 22px;border-radius:4px}.comment-form-cookies-consent{font-size:13px}.comment-form-cookies-consent label{display:inline}.comment-notes{font-size:13px;color:#555}
@media(max-width:1100px){.technical-layout{grid-template-columns:130px minmax(0,1fr);gap:30px;padding-top:65px}.technical-title h1{font-size:33px}.technical-content{font-size:16px}.topic-nav-inner{gap:24px;min-height:85px}.topic-search{margin-left:0}}
@media(max-width:760px){.technical-layout{display:block;width:calc(100% - 40px);padding-top:35px;padding-bottom:60px}.technical-sidebar{margin-bottom:25px}.sidebar-sticky{position:static}.sidebar-topics,.sidebar-share{display:none}.article-toc{border:1px solid #ddd;border-radius:6px;padding:15px}.article-toc ol{display:grid;grid-template-columns:1fr 1fr;gap:10px}.article-toc li{margin:0}.article-toc a{font-size:13px}.technical-title{padding-top:20px}.technical-title h1{font-size:30px}.technical-main .post-hero{margin:22px 0 28px}.technical-content h2{font-size:21px}.technical-gallery{gap:10px}.topic-nav-inner{justify-content:flex-start;gap:15px;min-height:80px;padding:15px 0}.topic-nav a{font-size:13px}.topic-search{width:100%;max-width:330px}.topic-search label,.topic-search input{width:100%}.topic-search label{flex:1}.related-posts .article-grid{grid-template-columns:1fr}.related-posts .article-card h2{font-size:20px}.related-posts .card-meta{font-size:13px}.related-posts .card-date{font-size:13px}.video-preview .load-video{font-size:14px;padding:12px}.video-preview p{font-size:11px;padding:7px}.spec-table th,.spec-table td{padding:10px 8px}.comment-list .children{margin-left:10px;padding-left:12px}}

.comments-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;border-bottom:1px solid #ddd;margin-bottom:25px}.comments-heading h2{margin:0;padding-bottom:15px;font-size:21px}.comments-heading>a{font-size:14px;text-decoration:underline}.comment-form-comment textarea{resize:vertical;min-height:135px}.comment-form-url{display:none}.comment-respond{margin-top:25px}.comment-reply-title{font-size:21px}

.card-meta{align-items:flex-start;justify-content:space-between;gap:14px;min-height:40px}.card-categories{flex:1;min-width:0;line-height:1.5;overflow-wrap:anywhere}.card-categories a{display:inline}.card-read-time{white-space:nowrap;flex-shrink:0;line-height:1.5;color:#666}.filter-bar{display:grid;grid-template-columns:minmax(210px,280px) minmax(220px,440px) auto;justify-content:start;align-items:end;gap:16px;padding:20px;background:#f7f8fa;border:1px solid #e1e3e7;border-radius:12px;margin-bottom:50px}.filter-label{display:block;font-size:13px;font-weight:600;color:#444;margin:0 0 7px}.filter-bar>label,.filter-bar .search-field{width:100%;min-width:0}.filter-bar input,.filter-bar select{width:100%;height:48px;min-height:48px;font-size:15px;padding:11px 14px;background:#fff;border:1px solid #cdd1d6;border-radius:7px}.filter-bar .search-field input{padding-right:50px}.filter-bar .search-button{top:auto;bottom:0;height:48px;width:48px}.filter-bar .apply-filter{height:48px;border:1px solid #111;border-radius:7px;background:#111;color:white;font-weight:600;padding:10px 23px;font-size:15px}.calculator-comments{max-width:1240px;padding-bottom:65px}.calculator-v2-page{width:100%;min-width:0}#spx-calc{max-width:100%;overflow-x:clip}#spx-calc button:focus-visible,#spx-calc a:focus-visible{outline:3px solid #0f6fa8;outline-offset:3px}
@media(max-width:760px){.filter-bar{grid-template-columns:minmax(0,1fr) auto;gap:13px;padding:16px;margin-bottom:34px}.filter-bar>label{grid-column:1/-1}.filter-bar .search-field{grid-column:1}.filter-bar .apply-filter{grid-column:2;min-width:78px;padding:10px 17px}.filter-bar input,.filter-bar select{font-size:16px}.filter-label{font-size:13px}.card-meta{gap:12px;min-height:0;margin-bottom:14px}.card-categories{font-size:13px}.card-read-time{font-size:12px}.calculator-comments{width:calc(100% - 40px)}#spx-calc .spx-wrap{padding-left:16px;padding-right:16px}}
@media(max-width:360px){.filter-bar{grid-template-columns:1fr}.filter-bar .search-field,.filter-bar .apply-filter{grid-column:1}.filter-bar .apply-filter{width:100%}.card-meta{flex-wrap:wrap}}

.footer-brand img{filter:none;background:transparent;width:200px;height:auto;object-fit:contain}

.newsletter-input-row{display:flex;gap:8px;align-items:stretch}.newsletter .newsletter-input-row input{flex:1;min-width:0;height:48px;font-size:15px;padding:11px 13px;background:#232323;border:1px solid #555;border-radius:5px;color:white}.newsletter-input-row button{background:#ff171e;color:white;border:1px solid #ff171e;border-radius:5px;padding:10px 14px;font-size:14px;font-weight:600;min-height:48px;white-space:nowrap}.newsletter-input-row button:hover{background:#d81018}.newsletter-input-row button:disabled{opacity:.6;cursor:wait}.newsletter .newsletter-consent{font-size:12px;line-height:1.45;margin:10px 0 0;color:#aaa}.newsletter .newsletter-status{min-height:20px;font-size:13px;color:#fff;margin:8px 0 0}.newsletter-honeypot{position:absolute;left:-10000px;width:1px;height:1px;overflow:hidden}.newsletter-form[aria-busy=true]{opacity:.8}@media(max-width:760px){.newsletter .newsletter-input-row input{font-size:16px}.newsletter-input-row button{padding:10px 16px}}@media(max-width:380px){.newsletter-input-row{flex-direction:column}.newsletter-input-row button{width:100%}}