:root{--yn-ink:#153E5C;--yn-accent:#2C8C99;--yn-signal:#F2B84B;--yn-paper:#F3F7F8;--yn-text:#24333A;--yn-success:#2D7D55;--yn-line:#cddfe2;--yn-shadow:0 16px 42px rgba(21,62,92,.12)}
body{background:linear-gradient(180deg,#eaf4f5 0,var(--yn-paper) 28rem);color:var(--yn-text)}.skip-link{position:fixed;left:1rem;top:1rem;z-index:1000;transform:translateY(-180%);background:#fff;color:var(--yn-ink);padding:.7rem 1rem;border:2px solid var(--yn-signal);border-radius:.6rem}.skip-link:focus{transform:none}.navbar{background:var(--yn-ink)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--yn-signal);outline-offset:3px}.hero{text-align:left;padding-top:64px}.hero h1{max-width:800px;font-size:clamp(2rem,5vw,4rem);line-height:1.05;color:var(--yn-ink);letter-spacing:-.035em}.tools-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:1rem}.tool-card{border:1px solid var(--yn-line);border-radius:18px}.tool-card:hover{border-color:var(--yn-accent);box-shadow:var(--yn-shadow)}.tool-card .btn{background:var(--yn-ink)}.measurement-guide{max-width:1160px;margin:1.5rem auto 2rem;padding:1.5rem;display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;background:#fff;border:1px solid var(--yn-line);border-radius:22px;box-shadow:var(--yn-shadow)}.measurement-guide .eyebrow,.measurement-guide h2{grid-column:1/-1}.measurement-guide .eyebrow{margin:0;color:var(--yn-accent);font-size:.76rem;font-weight:800;letter-spacing:.14em}.measurement-guide h2{font-size:clamp(1.5rem,3vw,2.3rem);color:var(--yn-ink)}.measurement-guide div{padding:1rem;border-left:4px solid var(--yn-signal);background:var(--yn-paper)}.measurement-guide strong,.measurement-guide span{display:block}.measurement-guide span{margin-top:.4rem;color:#53656b}.tool-box{border:1px solid var(--yn-line);border-radius:22px;box-shadow:var(--yn-shadow)}.converter-row{background:var(--yn-paper);padding:1rem;border-radius:16px}.measurement-readout{margin-top:1.25rem;padding:1rem;background:var(--yn-ink);border-radius:16px;color:#fff}.measurement-readout .readout-label{margin:0 0 .5rem;color:#b9dfe2;font-size:.78rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}.measurement-readout .result-display{margin:0;background:#fff;border-color:#fff;color:var(--yn-ink);font-variant-numeric: tabular-nums}.measurement-readout .result-display strong{color:var(--yn-success);font-variant-numeric: tabular-nums}.measurement-readout .readout-note{margin:.6rem 0 0;color:#c9dce5;font-size:.8rem}.formula-box{border-color:var(--yn-line)}@media(max-width:900px){.tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.measurement-guide{grid-template-columns:1fr;margin-inline:1rem}}@media(max-width:390px){.hero{padding:38px 16px 12px}.hero h1{font-size:2rem}.tools-grid{grid-template-columns:1fr;padding-inline:16px}.measurement-guide{padding:1rem}.tool-box{padding:18px 14px}.converter-row{padding:.75rem}.measurement-readout{padding:.75rem}.formula-box{overflow-x:auto}}@media (prefers-reduced-motion: reduce){*,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}.swap-btn:hover{transform:none}}
/* retention-ui-v1:start */
html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}
body{min-width:320px;line-height:1.65;overflow-wrap:anywhere}
main{min-inline-size:0}
img,svg{max-inline-size:100%;height:auto}
.navbar{position:sticky;top:0;z-index:80;padding-inline:max(12px,env(safe-area-inset-left)) max(12px,env(safe-area-inset-right));box-shadow:0 10px 28px rgba(21,62,92,.18)}
.navbar-inner{height:auto;min-height:64px;gap:14px;padding-block:6px}
.navbar-brand{flex:0 0 auto;white-space:nowrap}
.navbar-toggle,.navbar-links a,.tool-card .btn,.field input,.field select,.swap-btn,.shortcuts a,.shortcuts button,.related-list a,.breadcrumb a,footer a,.trust-pages-nav a{min-block-size:44px}
.navbar-links a,.tool-card .btn,.shortcuts a,.shortcuts button,.related-list a,.breadcrumb a,footer a,.trust-pages-nav a{display:inline-flex;align-items:center;justify-content:center}
.navbar-toggle,.swap-btn{min-inline-size:44px}
.field input,.field select{font-size:16px}
.result-display{font-variant-numeric:tabular-nums}
.tool-card{display:flex;flex-direction:column;transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease}
.tool-card .btn{margin-top:auto}
.tool-card:focus-within{border-color:var(--yn-accent);box-shadow:var(--yn-shadow)}
.formula-box,.seo-text{line-height:1.8}
.breadcrumb a{min-inline-size:44px}
.navbar-links a{min-inline-size:44px}
footer a{min-inline-size:44px}
footer,.trust-pages-nav{padding-bottom:max(20px,env(safe-area-inset-bottom))}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid var(--yn-signal);outline-offset:3px}
@media(max-width:430px){
  html{scroll-padding-top:64px}
  .navbar-inner{min-height:62px}
  .navbar-links a{padding-inline:12px}
  .hero{padding:38px 14px 12px}
  .hero h1{font-size:clamp(2rem,10vw,2.75rem);text-wrap:balance}
  .container{padding-inline:12px}
  .tools-grid{grid-template-columns:1fr;padding-inline:14px}
  .tool-box{padding:18px 14px}
  .converter-row{gap:12px;padding:12px}
  .shortcuts,.related-list,footer,.trust-pages-nav{display:flex;flex-wrap:wrap;gap:7px}
  .shortcuts a,.shortcuts button,.related-list a,footer a,.trust-pages-nav a{padding-inline:11px}
}
@media(min-width:431px) and (max-width:768px){
  .tools-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .measurement-guide{grid-template-columns:1fr}
}
@media(min-width:1200px){
  .container,.tools-grid,.seo-content{max-width:1160px;margin-inline:auto}
  .navbar-links{gap:3px;flex-wrap:nowrap}
  .navbar-links a{padding-inline:4px;font-size:.78rem;white-space:nowrap}
  .tool-card:hover{transform:translateY(-3px)}
}
@media(prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  .tool-card{transition:none}
  .tool-card:hover,.swap-btn:hover{transform:none}
}
/* retention-ui-v1:end */
/* priority-discovery-v1:start */
.priority-discovery .priority-eyebrow{margin:0;color:inherit;opacity:.72;font-size:.74rem;font-weight:800;letter-spacing:.14em}
.priority-discovery h2{margin:.3rem 0 .55rem;line-height:1.25}
.priority-discovery>p{max-width:72ch}
.priority-list{list-style:none;margin:16px 0 0;padding:0}
.priority-list a{display:flex;min-height:72px;padding:12px;border-radius:12px;text-decoration:none;flex-direction:column;justify-content:center}
.priority-list strong{line-height:1.35}
.priority-list span{margin-top:4px;color:inherit;opacity:.72;font-size:.8rem;line-height:1.45}
.priority-review{margin:14px 0 0;font-size:.8rem;opacity:.72}
@media(max-width:768px){.priority-discovery .priority-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:430px){.priority-discovery{padding:16px}.priority-discovery .priority-list{grid-template-columns:1fr}.priority-list a{min-height:64px}}

:root{--priority-ynfkk-accent:#5f68d8}
.priority-discovery--ynfkk{margin:28px auto;padding:22px;background:#f5f6ff;border:1px solid #d8daf7;border-radius:20px}
.priority-discovery--ynfkk .priority-list{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.priority-discovery--ynfkk a{background:#fff;color:#25284b;border:1px solid #dedff4}
.priority-discovery--ynfkk a:hover{border-color:var(--priority-ynfkk-accent)}
/* priority-discovery-v1:end */