/* SizeKit site layer: header, footer, tool pages, content blocks. Loaded after the main stylesheet. */
:root{--sk-green:#087b62;--sk-green-dark:#065f4d;--sk-ink:#172329;--sk-text:#344b40;--sk-muted:#52675c;--sk-line:#d9e5dc;--sk-soft:#edf5ee}
html{scroll-behavior:smooth}
:focus-visible{outline:3px solid #7fd3bd;outline-offset:2px}

/* Header */
.topbar{height:auto;min-height:76px;flex-wrap:wrap;gap:6px 24px;padding:12px 0}
.topbar .brand{flex:0 0 auto}
.topbar .header-note,.header-note{display:flex!important;flex-wrap:wrap;gap:6px 22px;font-size:15px;align-items:center}
.header-note a{padding:8px 2px;color:#3f5258;border-bottom:2px solid transparent}
.header-note a:hover,.header-note a[aria-current=page]{color:var(--sk-green);border-bottom-color:var(--sk-green)}
.topbar .how-link{display:flex}
@media (max-width:860px){.topbar .how-link{display:none!important}}
@media (max-width:700px){
  .topbar{gap:0 12px;padding:10px 0 4px}
  .topbar .header-note{order:3;flex:1 0 100%;flex-wrap:nowrap;overflow-x:auto;gap:18px;padding-bottom:2px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .header-note::-webkit-scrollbar{display:none}
  .header-note a{white-space:nowrap;padding:10px 2px;font-size:15px}
}
.brand-icon svg{width:21px;height:21px}

/* Footer */
.site-footer{display:block!important;margin-top:56px;padding:36px 0 26px!important;font-size:14px!important;color:#5c6f66!important}
.site-footer .footer-grid{display:grid;grid-template-columns:1.5fr repeat(4,1fr);gap:28px}
.site-footer .footer-brand{color:#3f6b50;font-size:24px}
.site-footer .footer-about p{margin:10px 0 0;max-width:300px;line-height:1.6;font-size:14px;color:#5c6f66}
.site-footer nav{display:block!important}
.site-footer nav h2{margin:0 0 10px;font-size:13px;letter-spacing:.9px;text-transform:uppercase;color:#2f4439;font-weight:700}
.site-footer nav a{display:block;padding:5px 0;color:#4d625a;font-size:14px}
.site-footer nav a:hover{color:var(--sk-green);text-decoration:underline}
.site-footer .footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:8px 24px;margin-top:28px;padding-top:18px;border-top:1px solid #e0e5e7;font-size:13px;color:#6b7c74}
@media (max-width:900px){.site-footer .footer-grid{grid-template-columns:repeat(2,1fr)}.site-footer .footer-about{grid-column:1/-1}}
@media (max-width:420px){.site-footer .footer-grid{grid-template-columns:1fr 1fr;gap:20px}}

/* Reading width and shared page rhythm */
.article-main{padding-bottom:40px}
.tool-main{max-width:860px}
.tool-main .eyebrow{display:block;margin-top:6px}
.tool-main .lead{margin:0 0 6px}
.article-main h2{scroll-margin-top:16px}
.article-main code,.article-main .formula{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.formula{display:block;background:#f3f7f4;border:1px solid var(--sk-line);border-radius:10px;padding:14px 18px;margin:16px 0;font-size:16px;color:#1f3a30;overflow-x:auto;line-height:1.6}
.article-main .updated{color:var(--sk-muted);font-size:14px;margin:4px 0 0}

/* Tool card */
.tool-main .tool-card{max-width:none;margin:26px 0 8px;padding:26px;border-radius:18px}
.tool-card .tool-field{margin-bottom:16px}
.tool-card .tool-field label{font-size:15px;color:var(--sk-ink)}
.tool-card .tool-field input,.tool-card .tool-field select{min-height:48px;font-size:17px;border-radius:10px;background:#fff;color:var(--sk-ink)}
.tool-card .tool-field input:focus,.tool-card .tool-field select:focus{outline:3px solid #bfe6da;border-color:var(--sk-green)}
.tool-card .tool-field .hint{display:block;margin-top:6px;font-size:13px;color:#5f7168}
.tool-card .tool-grid{margin-bottom:0}
.tool-card .tool-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.tool-card .tool-grid.convert{grid-template-columns:minmax(0,1.2fr) minmax(0,1fr) auto minmax(0,1fr);align-items:end}
.tool-card .swap{min-height:48px;margin-bottom:16px;padding:0 14px;border:1px solid #cbd7d3;border-radius:10px;background:#fff;color:var(--sk-green);font-size:20px;cursor:pointer}
.tool-card .swap:hover{background:var(--sk-soft)}
.tool-card .tool-instruction{display:none}
.tool-card .tool-actions{display:flex;flex-wrap:wrap;gap:10px;margin:6px 0 4px}
.tool-card .tool-btn{min-height:48px;padding:0 24px;border-radius:10px;border:0;background:var(--sk-green);color:#fff;font-size:16px;font-weight:700;cursor:pointer}
.tool-card .tool-btn:hover{background:var(--sk-green-dark)}
.tool-card .tool-btn.secondary{background:var(--sk-soft);color:#24493a}
.tool-card .tool-btn.secondary:hover{background:#dcebdf}
.tool-card .tool-result{margin-top:16px;padding:18px 20px;border-radius:12px;background:#f2f8f5;border:1px solid #d3e7dd;color:var(--sk-ink);font-size:16px;line-height:1.7}
.tool-card .tool-result strong{display:block;font-size:22px;line-height:1.35;margin-bottom:4px}
.tool-card .tool-result .detail{display:block;color:var(--sk-muted);font-size:15px}
.tool-card .tool-result.is-error{background:#fff6f4;border-color:#f0cfc7;color:#8a2f1b}
.tool-card .tool-result.is-empty{color:#5f7168}
.tool-note{margin:14px 2px 0;font-size:14px;color:var(--sk-muted)}
.tool-note a{color:var(--sk-green);font-weight:600}
@media (max-width:640px){
  .tool-main .tool-card{padding:18px}
  .tool-card .tool-grid,.tool-card .tool-grid.three{grid-template-columns:1fr}
  .tool-card .tool-grid.two-sm{grid-template-columns:1fr 1fr}
  .tool-card .tool-grid.convert{grid-template-columns:1fr 1fr}
  .tool-card .tool-grid.convert>.tool-field:first-child{grid-column:1/-1}
  .tool-card .tool-grid.convert .swap{grid-column:1/-1;margin-top:-4px}
  .tool-card .tool-btn{flex:1 1 140px}
}

/* FAQ, related, cards */
.faq-block{margin-top:10px}
.faq-block h3{margin:22px 0 6px}
.faq-block p{margin:6px 0 0}
.related-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;margin:14px 0 0;padding:0;list-style:none}
.related-grid li{margin:0}
.related-grid a{display:block;height:100%;padding:14px 16px;background:#fff;border:1px solid var(--sk-line);border-radius:12px;text-decoration:none;color:var(--sk-green);font-weight:600;font-size:16px;line-height:1.4}
.related-grid a span{display:block;margin-top:4px;color:var(--sk-muted);font-weight:400;font-size:14px;line-height:1.5}
.related-grid a:hover{border-color:var(--sk-green)}
.article-main .related-grid{padding-left:0;list-style:none}
.article-main .related-grid li{margin:0}
.guide-list{display:grid;gap:14px;margin:18px 0;padding:0;list-style:none}
.article-main .guide-list{list-style:none;padding-left:0}
.guide-list a{display:block;padding:18px 20px;background:#fff;border:1px solid var(--sk-line);border-radius:12px;text-decoration:none}
.guide-list a:hover{border-color:var(--sk-green)}
.guide-list strong{display:block;color:var(--sk-green);font-size:18px;line-height:1.4}
.guide-list span{display:block;margin-top:4px;color:var(--sk-muted);font-size:16px;line-height:1.6}
.ref-table{margin:18px 0}

/* Home additions */
.home-extra{max-width:1180px;margin:56px auto 0;padding:0 24px}
.home-extra h2{margin:8px 0 10px;font-size:clamp(26px,3.4vw,36px);line-height:1.15;letter-spacing:-.8px;font-weight:650}
.home-extra .eyebrow{display:block}
.home-extra .lede{max-width:760px;color:#52675c;font-size:17px;line-height:1.7;margin:0 0 22px}
.why-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.why-grid>div{padding:22px;background:#fff;border:1px solid var(--sk-line);border-radius:14px}
.why-grid h3{margin:0 0 8px;font-size:18px;line-height:1.35}
.why-grid p{margin:0;color:#52675c;font-size:16px;line-height:1.65}
.home-links{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:20px;font-size:15px}
.home-links a{color:var(--sk-green);font-weight:600;text-decoration:underline;text-underline-offset:3px}
@media (max-width:900px){.why-grid{grid-template-columns:1fr}.home-extra{padding:0 16px;margin-top:44px}}
@media (max-width:520px){.home-extra{padding:0 2px}}

/* 404 */
.not-found{text-align:left}
.not-found .guide-list{margin-top:12px}

@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}

.home-extra .tools-cta{margin-top:22px;text-align:center}.home-extra .tools-cta a,.tools-cta a{color:var(--sk-green);font-weight:700}
.sample-button{min-height:44px;padding-top:10px;padding-bottom:10px}
#aspect{position:relative}#aspect::after{content:"";position:absolute;inset:-10px -6px}