:root{--rec-orange:#f47a20;--rec-dark:#2b2b2b;--rec-ink:#171717;--rec-muted:#64748b;--rec-line:#e5e7eb;--rec-soft:#f7f8fa;--rec-danger:#c62828;--rec-success:#17803d}
body.rec-calculators-page{overflow-x:clip}
body.rec-calculators-page .site-content,body.rec-calculators-page .ast-container,body.rec-calculators-page .content-area,body.rec-calculators-page .site-main,body.rec-calculators-page article,body.rec-calculators-page .entry-content{min-width:0;max-width:100%}
body.rec-single-calculator-page .entry-title,body.rec-single-calculator-page .entry-header{display:none!important}
.rec-calculator,.rec-archive,.rec-account,.rec-account-login{font-family:inherit;color:var(--rec-ink);box-sizing:border-box;max-width:1220px;width:calc(100% - 32px);margin:32px auto;direction:rtl;overflow:clip}
.rec-calculator *,.rec-archive *,.rec-account *,.rec-account-login *{box-sizing:border-box;min-width:0}
.rec-calculator img,.rec-archive img,.rec-account img{display:block;max-width:100%;height:auto}
.rec-calculator button,.rec-archive button,.rec-account button,.rec-calculator input,.rec-calculator select,.rec-archive input,.rec-account input{font:inherit}
.rec-calculator a,.rec-archive a,.rec-account a{text-underline-offset:3px}
.rec-kicker{display:inline-flex;align-items:center;gap:8px;color:var(--rec-orange);font:800 12px/1.4 Arial,sans-serif;letter-spacing:1.25px;direction:ltr}
.rec-button{display:inline-flex;align-items:center;justify-content:center;min-height:46px;padding:0 20px;border-radius:12px;text-decoration:none;font-weight:800;transition:.18s ease}
.rec-button-primary{background:var(--rec-orange);color:#fff}.rec-button-primary:hover{background:#d9630f;color:#fff;transform:translateY(-1px)}
.rec-button-ghost{border:1px solid rgba(255,255,255,.25);color:#fff;background:rgba(255,255,255,.05)}.rec-button-ghost:hover{border-color:var(--rec-orange);color:#fff}

/* Archive */
.rec-archive-v4{display:grid;gap:24px}
.rec-archive-hero-v4{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(230px,.55fr);align-items:end;min-height:470px;padding:52px 54px 0;border-radius:28px;background:radial-gradient(circle at 80% 10%,rgba(244,122,32,.19),transparent 36%),linear-gradient(135deg,#242424 0%,#303030 62%,#422b1d 100%);color:#fff;box-shadow:0 24px 70px rgba(0,0,0,.14);overflow:hidden}
.rec-archive-hero-v4:before{content:"ROKN";position:absolute;right:30px;bottom:-34px;z-index:-1;font:900 clamp(100px,20vw,260px)/1 Arial,sans-serif;color:rgba(255,255,255,.025);letter-spacing:-10px;direction:ltr}
.rec-archive-hero-copy{align-self:center;padding-bottom:48px;max-width:790px}
.rec-archive-hero-copy h1{margin:15px 0 16px;color:#fff;font-size:clamp(36px,5.1vw,67px);line-height:1.22;letter-spacing:-1.3px}
.rec-archive-hero-copy>p{margin:0;max-width:760px;color:#e5e7eb;font-size:clamp(15px,1.6vw,19px);line-height:2}
.rec-hero-points{display:flex;flex-wrap:wrap;gap:9px;margin-top:24px}.rec-hero-points span{padding:8px 12px;border:1px solid rgba(255,255,255,.16);border-radius:999px;background:rgba(255,255,255,.06);font-size:12px;color:#f8fafc}
.rec-hero-actions{display:flex;flex-wrap:wrap;gap:11px;margin-top:26px}
.rec-archive-character{align-self:end;justify-self:center;width:min(100%,360px);max-height:445px;overflow:hidden;filter:drop-shadow(0 18px 22px rgba(0,0,0,.28))}.rec-archive-character img{width:100%;transform:translateY(18px)}
.rec-archive-brand-mini{position:absolute;left:28px;top:26px;display:flex;align-items:center;gap:9px;padding:10px 13px;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:rgba(0,0,0,.17);backdrop-filter:blur(8px)}.rec-archive-brand-mini strong{font-size:11px;color:#cbd5e1}.rec-archive-brand-mini span{font-size:14px;font-weight:900;color:var(--rec-orange)}.rec-archive-brand-mini small{font-size:10px;color:#cbd5e1}
.rec-search-panel{padding:22px 24px;border:1px solid var(--rec-line);border-radius:20px;background:#fff;box-shadow:0 13px 40px rgba(15,23,42,.045)}
.rec-search-panel>label{display:block;margin-bottom:10px;font-size:15px;font-weight:900}
.rec-search-control{display:grid;grid-template-columns:minmax(0,1fr) 52px;overflow:hidden;border:1px solid #cfd5dd;border-radius:13px;background:#fff}.rec-search-control:focus-within{border-color:var(--rec-orange);box-shadow:0 0 0 4px rgba(244,122,32,.1)}
.rec-search-control input{width:100%;height:53px;border:0;outline:0;padding:0 17px;background:transparent}.rec-search-control span{display:grid;place-items:center;color:var(--rec-orange);font-size:26px}
.rec-search-panel>small{display:block;margin-top:9px;color:var(--rec-muted);font-size:12px}
.rec-archive-home,.rec-discipline-panel,.rec-search-results{padding:31px;border:1px solid var(--rec-line);border-radius:24px;background:#fff;box-shadow:0 17px 55px rgba(15,23,42,.045);scroll-margin-top:140px}
.rec-section-heading{margin-bottom:23px}.rec-section-heading>span{color:var(--rec-orange);font-size:12px;font-weight:900}.rec-section-heading h2{margin:7px 0 8px;font-size:clamp(28px,3.8vw,44px);line-height:1.3}.rec-section-heading p{margin:0;color:var(--rec-muted);line-height:1.9}
.rec-discipline-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:15px}
.rec-discipline-card{display:grid;grid-template-columns:58px minmax(0,1fr) 38px;align-items:center;gap:14px;width:100%;min-height:126px;padding:20px;border:1px solid var(--rec-line);border-radius:18px;background:#fff;color:var(--rec-ink);text-align:right;cursor:pointer;transition:.18s ease}
.rec-discipline-card:hover,.rec-discipline-card:focus-visible{border-color:rgba(244,122,32,.65);box-shadow:0 13px 35px rgba(244,122,32,.1);transform:translateY(-2px);outline:0}
.rec-discipline-icon{display:grid;place-items:center;width:58px;height:58px;border-radius:15px;background:#fff4ea;color:var(--rec-orange)}.rec-discipline-icon svg{width:31px;height:31px;fill:none;stroke:currentColor;stroke-width:2.1;stroke-linecap:round;stroke-linejoin:round}
.rec-discipline-content{display:flex;flex-direction:column;gap:7px}.rec-discipline-content strong{font-size:18px;line-height:1.45}.rec-discipline-content small{color:var(--rec-muted);font-size:12px}.rec-discipline-arrow{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;background:#f4f5f7;font-size:17px}
.rec-discipline-panel-header{display:grid;grid-template-columns:auto minmax(0,1fr) 70px;align-items:center;gap:20px;margin-bottom:23px;padding-bottom:22px;border-bottom:1px solid var(--rec-line)}.rec-back-to-disciplines{min-height:42px;padding:0 15px;border:1px solid var(--rec-line);border-radius:11px;background:#fff;cursor:pointer;font-weight:800}.rec-back-to-disciplines:hover{border-color:var(--rec-orange);color:var(--rec-orange)}
.rec-discipline-panel-header>div span{color:var(--rec-orange);font-size:12px;font-weight:900}.rec-discipline-panel-header h2{margin:4px 0;font-size:32px}.rec-discipline-panel-header p{margin:0;color:var(--rec-muted)}
.rec-discipline-panel-icon{display:grid;place-items:center;width:70px;height:70px;border-radius:18px;background:#fff4ea;color:var(--rec-orange)}.rec-discipline-panel-icon svg{width:38px;height:38px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.rec-branch-list{display:grid;gap:13px}.rec-branch-accordion{border:1px solid var(--rec-line);border-radius:17px;background:#fafafa;overflow:hidden}.rec-branch-accordion[open]{border-color:rgba(244,122,32,.38);background:#fff}
.rec-branch-accordion summary{display:flex;align-items:center;justify-content:space-between;gap:15px;padding:18px 20px;cursor:pointer;list-style:none}.rec-branch-accordion summary::-webkit-details-marker{display:none}.rec-branch-accordion summary>span:first-child{display:flex;flex-direction:column;gap:5px}.rec-branch-accordion summary strong{font-size:17px}.rec-branch-accordion summary small{color:var(--rec-muted)}.rec-branch-toggle{flex:0 0 auto;padding:7px 10px;border-radius:9px;background:#fff0e4;color:#b84f0b;font-size:12px;font-weight:800}
.rec-branch-calculators{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px;padding:0 17px 17px}.rec-calculator-link-card{position:relative;display:flex;flex-direction:column;gap:8px;min-height:178px;padding:18px;border:1px solid var(--rec-line);border-radius:15px;background:#fff;color:var(--rec-ink);text-decoration:none;transition:.18s ease}.rec-calculator-link-card:hover{border-color:var(--rec-orange);box-shadow:0 12px 30px rgba(15,23,42,.08);transform:translateY(-2px)}.rec-calculator-link-card strong{font-size:16px;line-height:1.7}.rec-calculator-link-card small{color:var(--rec-muted);line-height:1.75}.rec-calculator-link-card em{margin-top:auto;color:var(--rec-orange);font-style:normal;font-size:12px;font-weight:900}.rec-calculator-link-brand{align-self:flex-start;color:#9ca3af;font:800 10px/1 Arial,sans-serif;letter-spacing:1.2px}
.rec-search-results-heading{position:relative}.rec-clear-search{position:absolute;left:0;top:0;min-height:40px;padding:0 13px;border:1px solid var(--rec-line);border-radius:10px;background:#fff;cursor:pointer}.rec-search-results-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:13px}.rec-search-result-card{display:flex;flex-direction:column;gap:7px;min-height:150px;padding:18px;border:1px solid var(--rec-line);border-radius:14px;color:var(--rec-ink);text-decoration:none}.rec-search-result-card:hover{border-color:var(--rec-orange)}.rec-search-result-card span,.rec-search-result-card small{color:var(--rec-muted);font-size:12px}.rec-search-result-card strong{font-size:16px}.rec-search-result-card[hidden]{display:none!important}.rec-search-empty{text-align:center;color:var(--rec-muted)}
.rec-archive-footer-brand{display:flex;align-items:center;gap:16px;padding:20px 24px;border-top:3px solid var(--rec-orange);border-radius:18px;background:var(--rec-dark);color:#fff}.rec-archive-footer-brand>span{color:var(--rec-orange);font:900 24px/1 Arial,sans-serif;letter-spacing:1.8px}.rec-archive-footer-brand div{display:flex;flex-direction:column;gap:4px}.rec-archive-footer-brand small{color:#cbd5e1}

/* Single calculator */
.rec-calculator-v3{border:1px solid var(--rec-line);border-radius:24px;background:#fff;box-shadow:0 22px 65px rgba(15,23,42,.075)}
.rec-calculator-brandbar{display:flex;align-items:center;gap:12px;min-height:54px;padding:10px 22px;border-bottom:1px solid rgba(255,255,255,.08);background:var(--rec-dark);color:#fff}.rec-brandmark{color:var(--rec-orange);font:900 15px/1 Arial,sans-serif;letter-spacing:1.5px;direction:ltr}.rec-calculator-brandbar strong{font-size:13px}.rec-calculator-brandbar a{margin-right:auto;color:#dbe2ea;text-decoration:none;font-size:12px}.rec-calculator-brandbar a:hover{color:var(--rec-orange)}
.rec-calculator-header{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:25px;padding:31px 34px 27px;border-bottom:1px solid var(--rec-line);background:linear-gradient(135deg,#fff 0%,#fafafa 100%)}.rec-breadcrumb{color:var(--rec-orange);font-size:13px;font-weight:900}.rec-calculator-heading h1{margin:8px 0 8px;font-size:clamp(27px,4vw,42px);line-height:1.35;letter-spacing:-.5px}.rec-calculator-heading>p{margin:0;color:var(--rec-muted);line-height:1.9}.rec-loaded-saved{margin-top:13px;padding:9px 11px;border-radius:10px;background:#eefbf2;color:#176b34;font-size:12px}
.rec-calculator-actions{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px;max-width:420px}.rec-calculator-actions button,.rec-calculator-actions a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 13px;border-radius:10px;font-size:12px;font-weight:800;text-decoration:none;cursor:pointer}.rec-favorite-button{gap:7px;border:1px solid #d8dde4;background:#fff;color:#343a40}.rec-favorite-button.is-active{border-color:rgba(244,122,32,.45);background:#fff3e8;color:#b84f0b}.rec-favorite-button span{font-size:20px}.rec-save-open{border:1px solid var(--rec-orange);background:var(--rec-orange);color:#fff}.rec-my-link,.rec-login-save{border:1px solid #d8dde4;color:#343a40;background:#fff}.rec-calculator-actions button:hover,.rec-calculator-actions a:hover{transform:translateY(-1px)}
.rec-formula-overview{display:grid;grid-template-columns:minmax(0,1fr) minmax(250px,.8fr);column-gap:28px;align-items:center;padding:28px 34px;border-bottom:1px solid var(--rec-line);background:#fbfbfc}.rec-formula-title{grid-column:1/-1;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:11px}.rec-formula-title span{font-size:13px;font-weight:900;color:#3f4650}.rec-formula-title small{color:var(--rec-muted)}.rec-formula-math{overflow-x:auto;overflow-y:hidden;padding:15px 18px;border:1px solid #e2e6eb;border-right:4px solid var(--rec-orange);border-radius:14px;background:#fff;text-align:center;font-size:clamp(20px,3vw,34px);direction:ltr;scrollbar-width:thin}.rec-formula-overview>p{margin:0;color:#505966;line-height:2;text-align:justify}
.rec-calculation-layout{display:grid;grid-template-columns:minmax(0,1.42fr) minmax(300px,.68fr);gap:24px;padding:30px 34px}.rec-input-panel{padding:0}.rec-panel-heading{margin-bottom:17px}.rec-panel-heading span{color:var(--rec-orange);font-size:12px;font-weight:900}.rec-panel-heading h2,.rec-result-panel h2{margin:4px 0 0;font-size:22px}.rec-input-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.rec-field label{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-bottom:8px;font-size:14px;font-weight:800}.rec-field label small{color:#737b86;font-size:14px;direction:ltr}.rec-field-control{display:grid;grid-template-columns:minmax(0,1fr) minmax(76px,104px);width:100%}.rec-field input,.rec-field select,.rec-output-unit{width:100%;height:48px;border:1px solid #cfd5dd;background:#fff;outline:0}.rec-field input{padding:0 13px;border-radius:0 11px 11px 0;direction:ltr;text-align:left}.rec-field select{padding:0 8px;border-right:0;border-radius:11px 0 0 11px;text-align:center}.rec-field-control:focus-within input,.rec-field-control:focus-within select,.rec-output-unit:focus{border-color:var(--rec-orange);box-shadow:0 0 0 3px rgba(244,122,32,.09)}.rec-field-error{min-height:21px;padding-top:5px;color:var(--rec-danger);font-size:12px}.rec-field.is-invalid input,.rec-field.is-invalid select{border-color:#e15353;background:#fff8f8}
.rec-result-panel{position:sticky;top:28px;align-self:start;padding:23px;border-radius:18px;background:linear-gradient(145deg,#262626,#333);color:#fff;overflow:hidden}.rec-result-watermark{position:absolute;left:-15px;top:8px;color:rgba(255,255,255,.035);font:900 78px/1 Arial,sans-serif;direction:ltr;transform:rotate(-8deg)}.rec-result-panel header{position:relative;margin-bottom:16px}.rec-result-panel header span{font-size:11px;color:#ffb77f}.rec-results{position:relative;display:grid;gap:11px}.rec-result{display:grid;grid-template-columns:minmax(0,1fr) minmax(72px,94px);align-items:center;gap:9px;padding:14px;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:rgba(255,255,255,.055)}.rec-result-label{grid-column:1/-1;color:#d5dbe2;font-size:12px}.rec-result-label small{color:#fff}.rec-result-value{overflow:hidden;color:#fff;font-size:clamp(22px,3vw,29px);direction:ltr;text-align:right;text-overflow:ellipsis}.rec-output-unit{height:38px;padding:0 7px;border:0;border-radius:8px;color:#222;text-align:center}.rec-global-error{margin-top:11px;color:#ffb5b5;font-size:12px;line-height:1.7}.rec-verification{margin-top:12px;color:#8cf0aa;font-size:11px;line-height:1.6}.rec-verification.is-error{color:#ffb5b5}.rec-result-brand{display:block;margin-top:17px;padding-top:14px;border-top:1px solid rgba(255,255,255,.11);color:#9ca8b7;font:700 9px/1.5 Arial,sans-serif;letter-spacing:1.6px;text-align:center;direction:ltr}
.rec-engineering-details{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:17px;padding:0 34px 30px}.rec-detail-card{padding:21px;border:1px solid var(--rec-line);border-radius:16px;background:#fff}.rec-detail-card h2{margin:0 0 13px;font-size:18px}.rec-detail-card p,.rec-detail-card li{color:#56606d;line-height:1.95}.rec-detail-card ul{margin:0;padding-right:20px}.rec-engineering-note{grid-column:1/-1;border-right:4px solid var(--rec-orange);background:#fffaf6}.rec-engineering-note p{margin:0}
.rec-variable-table{display:grid;gap:0;border:1px solid var(--rec-line);border-radius:12px;overflow:hidden}.rec-variable-table>div{display:grid;grid-template-columns:minmax(65px,.45fr) minmax(130px,1fr) minmax(90px,.65fr);align-items:center}.rec-variable-table>div+div{border-top:1px solid var(--rec-line)}.rec-variable-table span,.rec-variable-table strong,.rec-variable-table small{padding:10px 12px}.rec-variable-table span{direction:ltr;text-align:center;background:#fafafa}.rec-variable-table small{color:var(--rec-muted)}
.rec-save-panel{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.65fr) auto;align-items:end;gap:16px;margin:0 34px 30px;padding:20px;border:1px solid rgba(244,122,32,.3);border-radius:16px;background:#fff8f1}.rec-save-panel[hidden]{display:none!important}.rec-save-panel h2{margin:0 0 5px;font-size:18px}.rec-save-panel p{margin:0;color:var(--rec-muted);font-size:13px}.rec-save-panel label span{display:block;margin-bottom:7px;font-size:12px;font-weight:800}.rec-save-panel input{width:100%;height:44px;padding:0 12px;border:1px solid #ccd2da;border-radius:10px;outline:0}.rec-save-panel input:focus{border-color:var(--rec-orange);box-shadow:0 0 0 3px rgba(244,122,32,.1)}.rec-save-actions{display:flex;gap:7px}.rec-save-actions button{height:44px;padding:0 13px;border-radius:10px;cursor:pointer;font-weight:800}.rec-save-actions button:first-child{border:1px solid var(--rec-orange);background:var(--rec-orange);color:#fff}.rec-save-actions button:last-child{border:1px solid #d4d8de;background:#fff}.rec-save-message{grid-column:1/-1;min-height:18px;color:var(--rec-success);font-size:12px}.rec-save-message.is-error{color:var(--rec-danger)}
.rec-calculator-footer{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px;padding:20px 25px;border-top:3px solid var(--rec-orange);background:#f8f9fb}.rec-calculator-footer p{display:flex;flex-direction:column;gap:5px;margin:0}.rec-calculator-footer p strong{font-size:13px}.rec-calculator-footer p small{color:var(--rec-muted);line-height:1.7}.rec-calculator-footer>a{color:var(--rec-ink);font:800 12px/1 Arial,sans-serif;direction:ltr}

/* User account */
.rec-account,.rec-account-login{border:1px solid var(--rec-line);border-radius:24px;background:#fff;box-shadow:0 20px 60px rgba(15,23,42,.07)}
.rec-account-header{padding:34px;background:linear-gradient(135deg,#242424,#333);color:#fff;border-radius:23px 23px 0 0}.rec-account-header h1{margin:8px 0;font-size:40px;color:#fff}.rec-account-header p{margin:0;color:#d5dbe2}.rec-account-header>a{display:inline-flex;margin-top:18px;color:#ffad70;font-weight:800}.rec-account-tabs{display:flex;gap:8px;padding:18px 24px;border-bottom:1px solid var(--rec-line);overflow-x:auto}.rec-account-tabs button{flex:0 0 auto;min-height:42px;padding:0 14px;border:1px solid var(--rec-line);border-radius:10px;background:#fff;cursor:pointer;font-weight:800}.rec-account-tabs button span{display:inline-grid;place-items:center;min-width:23px;height:23px;margin-right:6px;border-radius:999px;background:#f1f3f5;font-size:11px}.rec-account-tabs button.is-active{border-color:var(--rec-orange);background:#fff3e9;color:#a84508}
.rec-account-panel{display:none;padding:25px}.rec-account-panel.is-active{display:block}.rec-account-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.rec-account-card{display:flex;flex-direction:column;gap:8px;min-height:200px;padding:19px;border:1px solid var(--rec-line);border-radius:15px}.rec-account-card>span{color:var(--rec-orange);font-size:11px;font-weight:800}.rec-account-card h3{margin:0;font-size:18px}.rec-account-card p{margin:0;color:var(--rec-muted);line-height:1.8}.rec-account-card>div{display:flex;align-items:center;gap:8px;margin-top:auto}.rec-account-card a,.rec-account-card button{display:inline-flex;align-items:center;min-height:38px;padding:0 12px;border-radius:9px;font-size:12px;font-weight:800;text-decoration:none}.rec-account-card a{background:var(--rec-orange);color:#fff}.rec-account-card button{border:1px solid var(--rec-line);background:#fff;color:#555;cursor:pointer}.rec-account-card form{margin:0}
.rec-saved-list{display:grid;gap:13px}.rec-saved-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(220px,.75fr) auto;align-items:center;gap:18px;padding:19px;border:1px solid var(--rec-line);border-radius:15px}.rec-saved-card-main>span{color:var(--rec-orange);font-size:11px;font-weight:900}.rec-saved-card-main h3{margin:4px 0;font-size:18px}.rec-saved-card-main small{color:var(--rec-muted)}.rec-saved-results{display:flex;flex-wrap:wrap;gap:8px}.rec-saved-results>span{display:flex;flex-direction:column;gap:4px;padding:8px 10px;border-radius:9px;background:#f5f6f8}.rec-saved-results small{color:var(--rec-muted)}.rec-saved-actions{display:flex;gap:7px}.rec-saved-actions a,.rec-saved-actions button{display:inline-flex;align-items:center;justify-content:center;min-height:38px;padding:0 11px;border-radius:9px;font-size:12px;font-weight:800;text-decoration:none}.rec-saved-actions a{background:var(--rec-orange);color:#fff}.rec-saved-actions button{border:1px solid var(--rec-line);background:#fff;cursor:pointer}.rec-saved-actions form{margin:0}
.rec-empty-state{display:flex;flex-direction:column;align-items:center;max-width:560px;margin:22px auto;padding:35px;text-align:center;border:1px dashed #cdd3da;border-radius:18px;background:#fafafa}.rec-empty-state>span{color:var(--rec-orange);font:900 22px/1 Arial,sans-serif;letter-spacing:1.7px}.rec-empty-state h3{margin:14px 0 7px}.rec-empty-state p{margin:0;color:var(--rec-muted);line-height:1.9}.rec-empty-state a{margin-top:16px;color:var(--rec-orange);font-weight:900}.rec-account-login{padding:50px;text-align:center}.rec-account-login>span{color:var(--rec-orange);font:900 27px/1 Arial,sans-serif;letter-spacing:2px}.rec-account-login h2{margin:16px 0 8px;font-size:33px}.rec-account-login p{color:var(--rec-muted)}
.rec-notice{padding:14px 16px;border-radius:10px}.rec-notice-error{background:#fee8e8;color:#9f1f1f}

/* Tablet */
@media(max-width:980px){
  .rec-archive-hero-v4{grid-template-columns:minmax(0,1fr) 230px;padding:42px 36px 0;min-height:430px}.rec-archive-hero-copy h1{font-size:45px}.rec-archive-character{max-height:390px}.rec-archive-brand-mini{display:none}
  .rec-discipline-grid,.rec-branch-calculators,.rec-search-results-grid,.rec-account-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .rec-calculator-header{grid-template-columns:1fr}.rec-calculator-actions{justify-content:flex-start;max-width:none}
  .rec-formula-overview{grid-template-columns:1fr}.rec-formula-overview>p{margin-top:16px}
  .rec-calculation-layout{grid-template-columns:1fr}.rec-result-panel{position:static}.rec-engineering-details{grid-template-columns:1fr}.rec-engineering-note{grid-column:auto}
  .rec-save-panel{grid-template-columns:1fr 1fr}.rec-save-actions{align-self:end}
  .rec-saved-card{grid-template-columns:1fr}.rec-saved-actions{justify-content:flex-start}
}

/* Mobile and small tablet */
@media(max-width:680px){
  .rec-calculator,.rec-archive,.rec-account,.rec-account-login{width:calc(100% - 20px);margin:16px auto;border-radius:17px}
  .rec-archive-v4{gap:14px}
  .rec-archive-hero-v4{display:flex;flex-direction:column;align-items:stretch;min-height:0;padding:30px 20px 0;border-radius:20px}.rec-archive-hero-copy{order:1;padding-bottom:12px}.rec-archive-hero-copy h1{font-size:34px;line-height:1.34;letter-spacing:-.5px}.rec-archive-hero-copy>p{font-size:14px;line-height:1.9}.rec-hero-points{gap:6px;margin-top:18px}.rec-hero-points span{padding:7px 9px;font-size:10px}.rec-hero-actions{display:grid;grid-template-columns:1fr;gap:8px;margin-top:19px}.rec-button{width:100%}.rec-archive-character{order:2;align-self:center;width:170px;max-height:240px}.rec-archive-character img{transform:translateY(12px)}.rec-archive-hero-v4:before{font-size:105px;right:6px;bottom:-12px}
  .rec-search-panel,.rec-archive-home,.rec-discipline-panel,.rec-search-results{padding:18px;border-radius:17px}.rec-search-control{grid-template-columns:minmax(0,1fr) 43px}.rec-search-control input{height:49px;padding:0 12px;font-size:13px}.rec-section-heading h2{font-size:29px}.rec-section-heading p{font-size:13px}
  .rec-discipline-grid,.rec-branch-calculators,.rec-search-results-grid,.rec-account-grid{grid-template-columns:1fr}.rec-discipline-card{grid-template-columns:50px minmax(0,1fr) 34px;min-height:103px;padding:15px}.rec-discipline-icon{width:50px;height:50px;border-radius:13px}.rec-discipline-content strong{font-size:16px}.rec-discipline-content small{font-size:11px}
  .rec-discipline-panel-header{grid-template-columns:1fr auto;gap:12px}.rec-back-to-disciplines{grid-column:1/-1;width:100%}.rec-discipline-panel-header h2{font-size:27px}.rec-discipline-panel-icon{width:55px;height:55px}.rec-branch-accordion summary{padding:15px}.rec-branch-calculators{padding:0 12px 12px}.rec-calculator-link-card{min-height:155px}
  .rec-search-results-heading{padding-left:0}.rec-clear-search{position:static;margin-top:11px}.rec-archive-footer-brand{padding:17px;border-radius:15px}.rec-archive-footer-brand>span{font-size:20px}
  .rec-calculator-v3{border-radius:17px}.rec-calculator-brandbar{padding:9px 14px;gap:9px}.rec-calculator-brandbar strong{font-size:11px}.rec-calculator-brandbar a{font-size:10px}.rec-calculator-header{padding:22px 17px 19px;gap:16px}.rec-calculator-heading h1{font-size:29px}.rec-calculator-heading>p{font-size:13px}.rec-calculator-actions{display:grid;grid-template-columns:1fr 1fr;width:100%}.rec-calculator-actions>*{width:100%}.rec-my-link{grid-column:1/-1}
  .rec-formula-overview{padding:20px 17px}.rec-formula-title{align-items:flex-start}.rec-formula-math{padding:13px 10px;font-size:22px}.rec-formula-overview>p{font-size:13px;text-align:right}
  .rec-calculation-layout{padding:22px 17px;gap:18px}.rec-input-grid{grid-template-columns:1fr;gap:14px}.rec-field-control{grid-template-columns:minmax(0,1fr) 82px}.rec-field input,.rec-field select{height:46px}.rec-result-panel{padding:18px;border-radius:14px}.rec-result{grid-template-columns:minmax(0,1fr) 82px}.rec-result-value{font-size:24px}
  .rec-engineering-details{padding:0 17px 20px;gap:12px}.rec-detail-card{padding:17px}.rec-variable-table>div{grid-template-columns:66px minmax(100px,1fr)}.rec-variable-table small{grid-column:1/-1;border-top:1px dashed var(--rec-line);padding-top:7px}
  .rec-save-panel{grid-template-columns:1fr;margin:0 17px 20px;padding:17px}.rec-save-actions{display:grid;grid-template-columns:1fr 1fr;width:100%}.rec-calculator-footer{grid-template-columns:auto minmax(0,1fr);padding:17px}.rec-calculator-footer>a{grid-column:1/-1}
  .rec-account-header{padding:24px 19px}.rec-account-header h1{font-size:32px}.rec-account-tabs{padding:13px 16px}.rec-account-panel{padding:16px}.rec-saved-card{padding:16px}.rec-saved-actions{display:grid;grid-template-columns:1fr 70px}.rec-saved-actions>*{width:100%}.rec-account-login{padding:33px 20px}.rec-account-login h2{font-size:28px}
}

/* Narrow mobile: guarantee no horizontal layout */
@media(max-width:390px){
  .rec-calculator,.rec-archive,.rec-account,.rec-account-login{width:calc(100% - 12px)}
  .rec-archive-hero-v4{padding-right:15px;padding-left:15px}.rec-archive-hero-copy h1{font-size:30px}.rec-hero-points span{font-size:9px}
  .rec-calculator-actions{grid-template-columns:1fr}.rec-my-link{grid-column:auto}.rec-field-control{grid-template-columns:minmax(0,1fr) 72px}.rec-field input{padding:0 8px}.rec-field select{padding:0 4px;font-size:12px}.rec-result{grid-template-columns:1fr}.rec-output-unit{width:100%}.rec-result-value{text-align:center}.rec-result-label{text-align:center}.rec-calculator-footer{grid-template-columns:1fr;text-align:center}.rec-brandmark{justify-self:center}.rec-calculator-footer p{align-items:center}.rec-variable-table>div{grid-template-columns:56px minmax(90px,1fr)}
}

@media(prefers-reduced-motion:reduce){.rec-button,.rec-discipline-card,.rec-calculator-link-card,.rec-calculator-actions button,.rec-calculator-actions a{transition:none!important}.rec-discipline-card:hover,.rec-calculator-link-card:hover{transform:none}}
body.rec-archive-shortcode-page .entry-title,body.rec-account-shortcode-page .entry-title{display:none!important}
.rec-result-watermark{left:8px;right:auto;max-width:calc(100% - 16px);overflow:hidden;white-space:nowrap;transform:none}


/* Version 0.4.0: scalable archive and lazy catalog */
.rec-archive-v5{display:grid;gap:24px}
.rec-archive-hero-v5{position:relative;isolation:isolate;display:grid;grid-template-columns:minmax(0,1.35fr) minmax(230px,.55fr);align-items:end;min-height:470px;padding:52px 54px 0;border-radius:28px;background:radial-gradient(circle at 80% 10%,rgba(244,122,32,.19),transparent 36%),linear-gradient(135deg,#242424 0%,#303030 62%,#422b1d 100%);color:#fff;box-shadow:0 24px 70px rgba(0,0,0,.14);overflow:hidden}
.rec-archive-hero-v5:before{content:"ROKN";position:absolute;right:30px;bottom:-34px;z-index:-1;font:900 clamp(100px,20vw,260px)/1 Arial,sans-serif;color:rgba(255,255,255,.025);letter-spacing:-10px;direction:ltr}
.rec-branch-content{padding:0 14px 15px}.rec-branch-status,.rec-search-status{padding:16px;text-align:center;color:var(--rec-muted);font-size:13px}.rec-branch-status:empty{display:none}
.rec-load-more{display:flex;align-items:center;justify-content:center;min-height:43px;margin:14px auto 0;padding:0 18px;border:1px solid rgba(244,122,32,.45);border-radius:11px;background:#fff8f2;color:#a84508;font-weight:900;cursor:pointer}.rec-load-more:hover{background:#ffefe2}.rec-load-more[hidden]{display:none!important}
.rec-card-path{display:block;color:var(--rec-orange);font-size:10px;font-weight:800}.rec-search-more{margin-top:18px}
@media(max-width:980px){.rec-archive-hero-v5{grid-template-columns:minmax(0,1fr) 230px;padding:42px 36px 0;min-height:430px}}
@media(max-width:680px){.rec-archive-v5{gap:14px}.rec-archive-hero-v5{display:flex;flex-direction:column;align-items:stretch;min-height:0;padding:30px 20px 0;border-radius:20px}.rec-archive-hero-v5:before{font-size:105px;right:6px;bottom:-12px}.rec-branch-content{padding:0 10px 12px}}
@media(max-width:390px){.rec-archive-hero-v5{padding-right:15px;padding-left:15px}}

/* v0.5.1 usability fixes */
#rec-disciplines{scroll-margin-top:clamp(120px,18vh,260px)}
.rec-field-control.is-unitless{grid-template-columns:minmax(0,1fr)}
.rec-field-control.is-unitless input{border-radius:11px}
.rec-input-unit.is-unitless,.rec-output-unit.is-unitless{display:none!important}
.rec-result.is-unitless{grid-template-columns:minmax(0,1fr)}
.rec-result.is-unitless .rec-result-value{text-align:center}

/* v0.5.2 numeric safety, localized inputs and responsive scientific notation */
.rec-field input{
  min-width:0;
  max-width:100%;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
  unicode-bidi:plaintext;
  font-variant-numeric:tabular-nums;
}
.rec-field input.is-long-number{font-size:12px;letter-spacing:-.25px}
.rec-result,.rec-result>*{min-width:0}
.rec-result-value{
  display:block;
  width:100%;
  max-width:100%;
  overflow:visible;
  white-space:nowrap;
  text-overflow:clip;
  line-height:1.25;
  font-variant-numeric:tabular-nums;
}
.rec-result.has-scientific .rec-result-value{font-size:clamp(16px,2.05vw,22px)}
.rec-scientific-number{
  display:inline-flex;
  align-items:baseline;
  justify-content:flex-start;
  gap:.18em;
  max-width:100%;
  white-space:nowrap;
  direction:ltr;
  unicode-bidi:isolate;
}
.rec-scientific-mantissa,.rec-scientific-times{flex:0 0 auto}
.rec-scientific-power{display:inline-flex;align-items:flex-start;flex:0 0 auto;line-height:1}
.rec-scientific-power>span{line-height:1.15}
.rec-scientific-power sup{
  position:relative;
  top:-.43em;
  margin-left:.05em;
  font-size:.58em;
  line-height:1;
  font-weight:800;
}
.rec-output-unit{min-width:0}
@media(max-width:680px){
  .rec-result.has-scientific .rec-result-value{font-size:18px;text-align:center}
  .rec-scientific-number{justify-content:center}
}
@media(max-width:390px){
  .rec-result.has-scientific .rec-result-value{font-size:16px}
}

.rec-field-range{min-height:18px;padding-top:5px;color:#667085;font-size:10px;line-height:1.55}.rec-field-guide{margin-top:2px;padding:6px 8px;border-radius:8px;background:#f7f8fa;color:#596270;font-size:10px;line-height:1.65}.rec-field.is-invalid .rec-field-range{color:#9b4b4b}

/* v0.6.5 — سخت‌سازی ریسپانسیو تمام صفحات سامانه */
body.rec-calculators-page{overflow-x:clip!important}
body.rec-calculators-page #page,
body.rec-calculators-page .site,
body.rec-calculators-page .site-content,
body.rec-calculators-page .ast-container,
body.rec-calculators-page .content-area,
body.rec-calculators-page .site-main,
body.rec-calculators-page article,
body.rec-calculators-page .entry-content,
body.rec-calculators-page .elementor,
body.rec-calculators-page .elementor-section-wrap,
body.rec-calculators-page .elementor-element,
body.rec-calculators-page .e-con,
body.rec-calculators-page .e-con-inner{min-inline-size:0!important;max-inline-size:100%!important}
body.rec-calculators-page .site-content,
body.rec-calculators-page .content-area,
body.rec-calculators-page .site-main,
body.rec-calculators-page article,
body.rec-calculators-page .entry-content{overflow-x:clip!important}
.rec-calculator,.rec-archive,.rec-account,.rec-account-login{inline-size:min(calc(100% - 20px),1220px);max-inline-size:100%;overflow-x:clip}
.rec-calculator *,.rec-archive *,.rec-account *,.rec-account-login *{min-inline-size:0;max-inline-size:100%}
.rec-formula-math,.rec-variable-table,.rec-detail-card{overflow-x:auto;overscroll-behavior-inline:contain}
.rec-formula-math mjx-container{max-inline-size:100%}
.rec-input-grid,.rec-engineering-details,.rec-calculation-layout,.rec-discipline-grid,.rec-branch-calculators,.rec-search-results-grid,.rec-account-grid{inline-size:100%}
@media(max-width:900px){
 .rec-archive-hero-v4,.rec-archive-hero-v5{grid-template-columns:1fr!important;min-block-size:0;padding:30px 22px 0}
 .rec-archive-character{inline-size:min(220px,70vw)}
 .rec-discipline-grid,.rec-branch-calculators,.rec-search-results-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:680px){
 .rec-calculator,.rec-archive,.rec-account,.rec-account-login{inline-size:calc(100% - 12px);margin-block:12px}
 .rec-discipline-grid,.rec-branch-calculators,.rec-search-results-grid{grid-template-columns:1fr}
 .rec-calculator-header,.rec-formula-overview,.rec-calculation-layout,.rec-engineering-details,.rec-save-panel,.rec-calculator-footer{padding-inline:12px}
}
@media(max-width:360px){
 .rec-calculator,.rec-archive,.rec-account,.rec-account-login{inline-size:calc(100% - 6px)}
 .rec-calculator-header,.rec-formula-overview,.rec-calculation-layout,.rec-engineering-details,.rec-save-panel,.rec-calculator-footer{padding-inline:8px}
 .rec-field-control{grid-template-columns:minmax(0,1fr) 68px}
}

/* Operational workspace — v0.9.0 */
.rec-save-panel label select{width:100%;min-width:0;box-sizing:border-box;border:1px solid #d6d6d6;border-radius:9px;background:#fff;padding:11px 12px;font:inherit}
.rec-save-panel label small{display:block;margin-top:6px;color:#666;line-height:1.7}
.rec-account-operational{max-width:1200px;margin-inline:auto;overflow-x:clip}
.rec-account-notice{margin:18px 0;padding:13px 16px;border-radius:9px;background:#f2f8ed;border:1px solid #bad5a6;color:#31551d}
.rec-project-create-card{display:grid;grid-template-columns:minmax(220px,.7fr) minmax(0,1.5fr);gap:28px;align-items:start;background:#fff;border:1px solid #e1e1e1;border-radius:16px;padding:24px;margin-bottom:24px;box-sizing:border-box}
.rec-project-create-card>div>span{color:#f47a20;font-weight:800;font-size:12px;letter-spacing:.04em}.rec-project-create-card h2{margin:6px 0 8px}.rec-project-create-card p{margin:0;color:#666}
.rec-project-form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;min-width:0}.rec-project-form label{display:block;min-width:0}.rec-project-form label>span{display:block;font-weight:700;margin-bottom:6px}.rec-project-form input,.rec-project-form select,.rec-project-form textarea{width:100%;max-width:100%;min-width:0;box-sizing:border-box;border:1px solid #d6d6d6;border-radius:9px;padding:10px 12px;font:inherit;background:#fff}.rec-project-form .rec-project-notes{grid-column:1/-1}.rec-project-form button{grid-column:1/-1;justify-self:start;border:0;border-radius:9px;background:#2b2b2b;color:#fff;padding:11px 22px;font:inherit;font-weight:800;cursor:pointer}
.rec-project-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px}.rec-project-card{min-width:0;background:#fff;border:1px solid #e1e1e1;border-radius:14px;padding:20px;box-sizing:border-box}.rec-project-card>span{font-size:12px;color:#f47a20;font-weight:800}.rec-project-card h3{margin:7px 0 8px;overflow-wrap:anywhere}.rec-project-card p{min-height:26px;color:#666;overflow-wrap:anywhere}.rec-project-meta{display:flex;align-items:baseline;gap:8px;border-top:1px solid #eee;padding-top:12px}.rec-project-meta strong{font-size:24px}.rec-project-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px}.rec-project-actions form{margin:0}.rec-project-actions button{border:0;background:none;color:#8a2d2d;cursor:pointer;font:inherit;padding:0}
.rec-saved-filter{display:flex;justify-content:space-between;align-items:end;gap:18px;background:#fff;border:1px solid #e1e1e1;border-radius:12px;padding:15px 18px;margin-bottom:18px}.rec-saved-filter label{font-weight:700}.rec-saved-filter select{display:block;margin-top:6px;min-width:220px;max-width:100%;padding:8px 10px;border:1px solid #d6d6d6;border-radius:8px;background:#fff}.rec-saved-filter small{color:#666}.rec-saved-card[hidden]{display:none!important}.rec-saved-card-main em{display:inline-block;margin-top:7px;padding:3px 8px;border-radius:999px;background:#f4f4f4;color:#555;font-style:normal;font-size:12px}
@media (max-width:900px){.rec-project-create-card{grid-template-columns:1fr}.rec-project-form{grid-template-columns:1fr}.rec-project-form .rec-project-notes{grid-column:auto}.rec-project-form button{grid-column:auto}.rec-saved-filter{align-items:stretch;flex-direction:column}.rec-saved-filter select{width:100%;min-width:0}}
@media (max-width:480px){.rec-project-create-card,.rec-project-card{padding:16px}.rec-project-grid{grid-template-columns:1fr}.rec-project-actions{align-items:flex-start;flex-direction:column}.rec-account-tabs{overflow-x:auto;scrollbar-width:thin}.rec-account-tabs button{flex:0 0 auto}.rec-save-panel{min-width:0}.rec-save-panel label,.rec-save-panel input,.rec-save-panel select{min-width:0;max-width:100%}}
.rec-saved-filter button{border:0;border-radius:8px;background:#2b2b2b;color:#fff;padding:9px 16px;font:inherit;font-weight:700;cursor:pointer}.rec-front-pagination{display:flex;justify-content:center;gap:7px;flex-wrap:wrap;margin:24px 0}.rec-front-pagination .page-numbers{display:inline-flex;min-width:38px;height:38px;align-items:center;justify-content:center;border:1px solid #ddd;border-radius:8px;background:#fff;text-decoration:none;color:#333;padding-inline:9px;box-sizing:border-box}.rec-front-pagination .current{background:#2b2b2b;color:#fff;border-color:#2b2b2b}

/* 0.9.1 operational scalability and responsive hardening */
.rec-project-search{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin:18px 0}.rec-project-search input{flex:1 1 280px;min-width:0}.rec-project-search button,.rec-project-search a{flex:0 0 auto}.rec-save-panel [data-rec-project-search]{margin-bottom:8px}.rec-account,.rec-account *,.rec-calculator,.rec-calculator *{min-width:0;box-sizing:border-box}.rec-project-card,.rec-saved-card,.rec-account-card{overflow-wrap:anywhere}.rec-front-pagination{max-width:100%;overflow:auto;padding-bottom:4px}
@media(max-width:640px){.rec-project-search{display:grid;grid-template-columns:1fr}.rec-project-search input,.rec-project-search button,.rec-project-search a{width:100%}.rec-save-panel label,.rec-save-panel input,.rec-save-panel select{max-width:100%}}
.rec-report-action{border:1px solid #d6d6d6;background:#fff;color:#2b2b2b;border-radius:9px;min-height:42px;padding:8px 12px;cursor:pointer;font:inherit}.rec-report-action:hover,.rec-report-action:focus-visible{border-color:#f47a20;color:#b94e00;outline:2px solid rgba(244,122,32,.25);outline-offset:2px}.rec-saved-report-links{display:flex;flex-wrap:wrap;gap:7px;margin-top:9px}.rec-saved-report-links a{padding:6px 10px;border:1px solid #ddd;border-radius:7px;text-decoration:none}.rec-calculator-actions{flex-wrap:wrap}

/* Interactive visualization engine — 0.11.6 */
.rec-visualization-panel{margin:28px 0;padding:24px;border:1px solid var(--rec-border,#d9dde3);border-radius:22px;background:var(--rec-card,#fff);box-shadow:0 10px 34px rgba(24,31,42,.06);overflow:hidden}
.rec-visualization-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;margin-bottom:4px}.rec-visualization-heading h2{margin:3px 0 0}.rec-chart-description{margin:0 0 16px;color:var(--rec-muted,#667085)}
.rec-chart-tools{display:flex;gap:8px;flex-wrap:wrap}.rec-chart-tools button{min-height:38px;padding:7px 13px;border:1px solid var(--rec-border,#d9dde3);border-radius:10px;background:var(--rec-card,#fff);color:var(--rec-text,#2b2b2b);font:inherit;cursor:pointer}.rec-chart-tools button:hover,.rec-chart-tools button:focus-visible{border-color:#f47a20;outline:2px solid rgba(244,122,32,.22);outline-offset:2px}
.rec-chart-legend{display:flex;flex-wrap:wrap;gap:9px;margin:0 0 12px}.rec-chart-legend-item{display:grid;grid-template-columns:12px auto;grid-template-areas:"dot name" "dot meta";column-gap:8px;align-items:center;padding:8px 11px;border:1px solid var(--rec-border,#d9dde3);border-radius:12px;background:var(--rec-soft,#f7f8fa);color:var(--rec-text,#2b2b2b);font:inherit;text-align:right;cursor:pointer}.rec-chart-legend-item i{grid-area:dot;width:10px;height:10px;border-radius:50%;background:var(--rec-series-color)}.rec-chart-legend-item span{grid-area:name;font-weight:700}.rec-chart-legend-item small{grid-area:meta;color:var(--rec-muted,#667085);font-size:11px}.rec-chart-legend-item.is-muted{opacity:.45}
.rec-chart-wrap{position:relative;width:100%;min-height:330px;border:1px solid var(--rec-border,#d9dde3);border-radius:16px;background:var(--rec-chart-surface,#fbfcfd);overflow:hidden;touch-action:pan-y}.rec-dynamic-chart{display:block;width:100%;height:auto;min-height:330px;direction:ltr}.rec-chart-bg{fill:var(--rec-chart-bg,#fff)}.rec-chart-grid{stroke:var(--rec-chart-grid,#e4e7ec);stroke-width:1}.rec-chart-grid-x{stroke-dasharray:3 5}.rec-chart-axis-label{fill:var(--rec-muted,#667085);font-size:12px;font-family:Tahoma,Arial,sans-serif}.rec-chart-axis-title{fill:var(--rec-text,#2b2b2b);font-size:13px;font-weight:700;font-family:Tahoma,Arial,sans-serif}.rec-chart-line{vector-effect:non-scaling-stroke}.rec-chart-line.is-hidden,.rec-chart-bar.is-hidden{display:none}.rec-chart-bar{opacity:.82}.rec-chart-threshold{stroke:#c73b3b;stroke-width:1.5;stroke-dasharray:7 5;vector-effect:non-scaling-stroke}.rec-chart-threshold-label{fill:#a42626;font-size:11px;font-family:Tahoma,Arial,sans-serif}.rec-chart-current{stroke:#f47a20;stroke-width:1.5;stroke-dasharray:3 3;vector-effect:non-scaling-stroke}.rec-chart-overlay{cursor:crosshair}
.rec-chart-tooltip{position:absolute;z-index:3;width:198px;padding:10px 12px;border:1px solid var(--rec-border,#d9dde3);border-radius:12px;background:var(--rec-card,#fff);color:var(--rec-text,#2b2b2b);box-shadow:0 12px 30px rgba(0,0,0,.16);pointer-events:none;font-size:12px;direction:rtl}.rec-chart-tooltip>strong{display:block;margin-bottom:6px;border-bottom:1px solid var(--rec-border,#d9dde3);padding-bottom:5px}.rec-chart-tooltip div{display:flex;align-items:center;gap:5px;margin-top:4px}.rec-chart-tooltip i{width:8px;height:8px;border-radius:50%;background:var(--rec-series-color);flex:none}.rec-chart-status{margin-top:9px;color:var(--rec-muted,#667085);font-size:12px}
.rec-chart-table-wrap{margin-top:16px;max-height:420px;overflow:auto;border:1px solid var(--rec-border,#d9dde3);border-radius:12px}.rec-chart-table{width:100%;border-collapse:collapse;min-width:520px}.rec-chart-table th,.rec-chart-table td{padding:8px 10px;border-bottom:1px solid var(--rec-border,#d9dde3);text-align:right}.rec-chart-table th{position:sticky;top:0;background:var(--rec-soft,#f4f5f7);z-index:1}.rec-chart-table td{font-variant-numeric:tabular-nums}
:root{--rec-chart-series-1:#f47a20;--rec-chart-series-2:#2b2b2b;--rec-chart-series-3:#1473e6;--rec-chart-series-4:#16875b;--rec-chart-series-5:#8a4baf}
[data-rec-theme="dark"],.rec-theme-dark{--rec-chart-bg:#20242a;--rec-chart-surface:#1c2025;--rec-chart-grid:#3a414a}
@media(max-width:720px){.rec-visualization-panel{padding:16px;margin:20px 0;border-radius:16px}.rec-visualization-heading{flex-direction:column}.rec-chart-tools{width:100%}.rec-chart-tools button{flex:1}.rec-chart-wrap,.rec-dynamic-chart{min-height:260px}.rec-chart-legend-item{flex:1 1 140px}.rec-chart-axis-label{font-size:10px}.rec-chart-axis-title{font-size:11px}}
@media print{.rec-chart-tools,.rec-chart-tooltip{display:none!important}.rec-visualization-panel{break-inside:avoid;box-shadow:none}.rec-chart-table-wrap[hidden]{display:none!important}}

/* 0.11.8 — stable embedded renderer for ROKN product integrations */
.rec-calculator--embedded{inline-size:100%;max-inline-size:100%;margin:0;box-shadow:none;border-radius:18px;border:1px solid #e3e5e8;background:#fff;overflow:hidden}
.rec-calculator--embedded .rec-calculator-header--embedded{display:flex;align-items:flex-start;justify-content:space-between;gap:22px;padding:22px 24px;border-bottom:1px solid #eceef1;background:#fff}
.rec-calculator--embedded .rec-calculator-header--embedded h3{margin:4px 0 8px;font-size:clamp(20px,2vw,28px);line-height:1.45;color:#242424}
.rec-calculator--embedded .rec-calculator-header--embedded p{margin:0;max-width:780px;color:#626873;line-height:1.9}
.rec-calculator--embedded .rec-calculator-actions--embedded{display:flex;align-items:center;gap:8px;flex-wrap:wrap;flex:0 0 auto}
.rec-calculator--embedded .rec-formula-overview{margin-top:0}
.rec-calculator--embedded .rec-engineering-details{margin-bottom:0}
@media(max-width:760px){
 .rec-calculator--embedded .rec-calculator-header--embedded{flex-direction:column;padding:18px 14px}
 .rec-calculator--embedded .rec-calculator-actions--embedded{width:100%}
 .rec-calculator--embedded .rec-calculator-actions--embedded>*{flex:1 1 160px;text-align:center}
}

/* 0.11.9 — product-page simple presentation */
.rec-calculator--product-simple .rec-breadcrumb{display:none}
.rec-calculator--product-simple .rec-calculator-header--embedded{padding-bottom:18px}
.rec-calculator--product-simple .rec-calculator-header--embedded h3{font-size:clamp(22px,2.5vw,31px);margin-top:0}
.rec-calculator--product-simple .rec-simple-guide{margin:18px 24px 0;padding:15px 17px;border:1px solid #ffd9ba;border-right:4px solid var(--rec-orange);border-radius:13px;background:#fffaf6}
.rec-calculator--product-simple .rec-simple-guide strong{display:block;margin-bottom:5px;color:#8f3f08;font-size:14px}
.rec-calculator--product-simple .rec-simple-guide p{margin:0;color:#4f5965;line-height:1.95}
.rec-calculator--product-simple .rec-formula-overview{display:block;padding:20px 24px;background:#fcfcfd}
.rec-calculator--product-simple .rec-formula-title{margin-bottom:8px}
.rec-calculator--product-simple .rec-formula-title span{font-size:14px}
.rec-calculator--product-simple .rec-formula-title small{font-size:11px}
.rec-calculator--product-simple .rec-formula-math{overflow:visible;padding:16px 10px;font-size:clamp(16px,1.75vw,25px);border-right-width:3px}
.rec-calculator--product-simple .rec-formula-math mjx-container[display="true"]{margin:.25em 0!important;max-width:100%;overflow:visible!important}
.rec-calculator--product-simple .rec-formula-overview>p{margin:12px 0 0;text-align:right;color:#535d69;line-height:1.95}
.rec-calculator--product-simple .rec-panel-heading span,.rec-calculator--product-simple .rec-result-panel header>span{font-size:12px}
.rec-calculator--product-simple .rec-field label small{display:none}
.rec-calculator--product-simple .rec-field-guide{margin-top:5px;padding:7px 9px;font-size:11px;line-height:1.75;background:#f7f8fa;color:#5b6571}
.rec-calculator--product-simple .rec-field-range{font-size:10px}
.rec-calculator--product-simple .rec-result-label small{display:none}
.rec-calculator--product-simple .rec-technical-details{padding:0;overflow:hidden}
.rec-calculator--product-simple .rec-technical-details summary{cursor:pointer;list-style:none;padding:18px 20px;font-weight:900;color:#343a42}
.rec-calculator--product-simple .rec-technical-details summary::-webkit-details-marker{display:none}
.rec-calculator--product-simple .rec-technical-details summary:after{content:"+";float:left;color:var(--rec-orange);font-size:20px;line-height:1}
.rec-calculator--product-simple .rec-technical-details[open] summary:after{content:"−"}
.rec-calculator--product-simple .rec-technical-details .rec-variable-table{margin:0 18px 18px}
.rec-calculator--product-simple .rec-engineering-details{align-items:start}
@media(max-width:760px){
 .rec-calculator--product-simple .rec-simple-guide{margin:14px 14px 0;padding:13px 14px}
 .rec-calculator--product-simple .rec-formula-overview{padding:17px 14px}
 .rec-calculator--product-simple .rec-formula-math{font-size:17px;padding:14px 6px}
}

/* 0.11.10 — simplified product inputs + safer product-page reserve guidance */
.rec-calculator--product-simple .rec-product-advanced-inputs{margin:14px 0 0;border:1px solid #e7e9ed;border-radius:14px;background:#fbfcfd;overflow:hidden}
.rec-calculator--product-simple .rec-product-advanced-inputs summary{cursor:pointer;list-style:none;padding:14px 16px;font-weight:900;color:#343a42;display:flex;align-items:center;justify-content:space-between;gap:14px}
.rec-calculator--product-simple .rec-product-advanced-inputs summary::-webkit-details-marker{display:none}
.rec-calculator--product-simple .rec-product-advanced-inputs summary:after{content:"+";flex:0 0 auto;color:var(--rec-orange);font-size:20px;line-height:1}
.rec-calculator--product-simple .rec-product-advanced-inputs[open] summary:after{content:"−"}
.rec-calculator--product-simple .rec-product-advanced-inputs summary small{font-weight:500;color:#6a7380;font-size:11px;line-height:1.7}
.rec-calculator--product-simple .rec-input-grid--advanced{padding:0 14px 14px}
@media(max-width:760px){
 .rec-calculator--product-simple .rec-product-advanced-inputs summary{align-items:flex-start;flex-direction:column;position:relative;padding-left:42px}
 .rec-calculator--product-simple .rec-product-advanced-inputs summary:after{position:absolute;left:16px;top:14px}
 .rec-calculator--product-simple .rec-input-grid--advanced{padding:0 10px 10px}
}

/* 0.12.0 trusted bank/manual selector for product embedded calculators */
.rec-field-bank{margin:0 0 9px;padding:10px 11px;border:1px solid #eceff2;border-radius:10px;background:#fafbfc;display:grid;gap:6px}
.rec-field-bank>span{font-size:12px;font-weight:900;color:#3f4650}
.rec-field-bank .rec-input-bank{height:42px;border:1px solid #d5dae1!important;border-radius:9px!important;background:#fff;padding:0 10px!important;text-align:right!important;font-size:13px!important}
.rec-field-bank small{font-size:11px;line-height:1.8;color:#6c7580}
.rec-calculator--product-simple .rec-field label{justify-content:flex-start}
@media(max-width:760px){.rec-field-bank{padding:9px}.rec-field-bank .rec-input-bank{height:44px}}

/* 0.12.2 — product embedded component-bank filters */
.rec-bank-filters{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin:2px 0 4px}
.rec-bank-filters label{display:grid;gap:4px;font-size:11px;font-weight:800;color:#555f6b}
.rec-bank-filters select,.rec-bank-filters input{height:38px;border:1px solid #d8dde4;border-radius:8px;background:#fff;padding:0 9px;font:inherit;color:#252a31}
.rec-bank-filter-status{display:block;color:#6c7580;line-height:1.75}
@media(max-width:760px){.rec-bank-filters{grid-template-columns:1fr}.rec-bank-filters select,.rec-bank-filters input{height:42px}}

.rec-field-manual-note{display:block;margin:0 0 8px;padding:8px 10px;border-radius:8px;background:#f7f8fa;color:#667085;font-size:11px;line-height:1.8}

/* REC 0.19.0 Precision Chart Engine v2 */
.rec-chart-wrap{min-height:390px;background:var(--rec-chart-surface,#fbfcfd);overflow:hidden}
.rec-dynamic-chart{width:100%;min-height:390px;aspect-ratio:960/520}
.rec-chart-axis-line{stroke:var(--rec-chart-axis,#98a2b3);stroke-width:1.15;vector-effect:non-scaling-stroke}
.rec-chart-axis-label-right,.rec-chart-axis-title-right{direction:ltr}
.rec-chart-crosshair{stroke:var(--rec-chart-crosshair,#667085);stroke-width:1;stroke-dasharray:3 4;opacity:.8;vector-effect:non-scaling-stroke;pointer-events:none}
.rec-chart-crosshair-y{opacity:.38}
.rec-chart-hover-point,.rec-chart-current-point{stroke:var(--rec-chart-bg,#fff);stroke-width:2;vector-effect:non-scaling-stroke;pointer-events:none}
.rec-chart-operating-group,.rec-chart-hover-group{pointer-events:none}
.rec-chart-tooltip{width:218px;max-width:calc(100% - 16px);font-variant-numeric:tabular-nums}
.rec-chart-tooltip small{margin-inline-start:auto;color:var(--rec-muted,#667085)}
.rec-chart-status{line-height:1.8}
.rec-chart-tools button[data-rec-chart-download]{font-weight:700}
[data-rec-theme="dark"],.rec-theme-dark{--rec-chart-axis:#7b8490;--rec-chart-crosshair:#cbd5e1}
@media(max-width:720px){.rec-chart-wrap,.rec-dynamic-chart{min-height:300px}.rec-chart-tooltip{width:205px}.rec-chart-tools button{min-width:0}.rec-chart-axis-label{font-size:10.5px}.rec-chart-axis-title{font-size:11.5px}}

/* REC 0.26.1 — deterministic light print palette for engineering charts. */
@media print{
  .rec-visualization-panel,.rec-chart-wrap,.rec-dynamic-chart{background:#fff!important;color-scheme:light!important;box-shadow:none!important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  .rec-chart-bg{fill:#fff!important}
  .rec-chart-grid{stroke:#e4e7ec!important}
  .rec-chart-axis-line{stroke:#98a2b3!important}
  .rec-chart-axis-label{fill:#667085!important}
  .rec-chart-axis-title{fill:#2b2b2b!important}
  .rec-chart-current-point{stroke:#fff!important}
  .rec-chart-tooltip,.rec-chart-hover-group,.rec-chart-overlay{display:none!important}
}