/* SpanFinder SEO/content enhancements — 27 July 2026.
   This file styles surrounding guidance, source registers and diagrams only.
   Calculator datasets, filtering logic and result calculations are untouched. */
.sf-breadcrumbs{max-width:1120px;margin:0 auto;padding:0 22px 14px;font-size:.84rem;color:#64748b;line-height:1.5}
.sf-breadcrumbs ol{display:flex;align-items:center;flex-wrap:wrap;gap:.45rem;list-style:none;margin:0;padding:0}
.sf-breadcrumbs li{display:flex;align-items:center;gap:.45rem}
.sf-breadcrumbs li:not(:last-child)::after{content:"/";color:#94a3b8}
.sf-breadcrumbs a{color:#0f766e;text-decoration:none;font-weight:850}
.sf-breadcrumbs [aria-current="page"]{color:#475569;font-weight:750}
.sf-seo-copy{max-width:1120px;margin:0 auto;padding:0 22px 28px}
.sf-seo-section{margin-top:18px;background:rgba(255,255,255,.9);border:1px solid rgba(255,255,255,.96);border-radius:24px;padding:22px;box-shadow:0 12px 36px rgba(15,23,42,.08)}
.sf-seo-section h2{margin:0 0 10px;font-size:clamp(1.45rem,3vw,2rem);letter-spacing:-.035em;color:#07111f}
.sf-seo-section h3{margin:0 0 8px;font-size:1.08rem;letter-spacing:-.02em;color:#172033}
.sf-seo-section p,.sf-seo-section li{color:#607089;line-height:1.7}
.sf-seo-section a{color:#0f766e;font-weight:850}
.sf-seo-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.sf-seo-grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.sf-seo-grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
.sf-seo-card{background:#f8fafc;border:1px solid #e2e8f0;border-radius:18px;padding:18px}
.sf-seo-card p:last-child{margin-bottom:0}
.sf-seo-card ul{margin:.55rem 0 0;padding-left:1.15rem}
.sf-seo-kicker{margin:0 0 7px!important;color:#0f766e!important;text-transform:uppercase;font-size:.73rem;font-weight:950;letter-spacing:.14em}
.sf-input-reference{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}
.sf-input-reference div{background:#f8fafc;border:1px solid #e2e8f0;border-radius:16px;padding:14px}
.sf-input-reference b{display:block;color:#172033;margin-bottom:4px}
.sf-input-reference span{display:block;color:#64748b;font-size:.9rem;line-height:1.5}
.sf-table-scroll{overflow-x:auto;border:1px solid #e2e8f0;border-radius:18px;background:#fff}
.sf-source-register,.sf-comparison-table{width:100%;border-collapse:collapse;min-width:760px}
.sf-source-register th,.sf-source-register td,.sf-comparison-table th,.sf-comparison-table td{text-align:left;vertical-align:top;padding:13px;border-bottom:1px solid #edf2f7;font-size:.9rem;line-height:1.55}
.sf-source-register th,.sf-comparison-table th{background:#f8fafc;color:#64748b;text-transform:uppercase;font-size:.72rem;letter-spacing:.08em}
.sf-source-register tr:last-child td,.sf-comparison-table tr:last-child td{border-bottom:0}
.sf-source-register td:first-child{font-weight:900;color:#172033}
.sf-source-register a{display:inline-flex;align-items:center;gap:.3rem;text-decoration:none}
.sf-source-register a::after{content:"↗";font-size:.8rem}
.sf-methodology{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(250px,.7fr);gap:16px;align-items:start}
.sf-review-box{background:#ecfdf5;border:1px solid #a7f3d0;border-radius:18px;padding:17px;color:#065f46}
.sf-review-box strong{display:block;margin-bottom:5px;color:#064e3b}
.sf-review-box p{color:#166534;margin:0;font-size:.91rem}
.sf-diagram-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:14px}
.sf-diagram{margin:0;background:#fff;border:1px solid #dbe4ef;border-radius:20px;overflow:hidden}
.sf-diagram img{display:block;width:100%;height:auto;background:#f8fafc}
.sf-diagram figcaption{padding:13px 15px;color:#475569;font-size:.9rem;line-height:1.55;border-top:1px solid #e2e8f0}
.sf-diagram.single{max-width:900px;margin:14px auto 0}
.sf-example-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:14px}
.sf-example{border-left:4px solid #0f766e;background:#ecfdf5;border-radius:16px;padding:16px}
.sf-example b{display:block;color:#064e3b;margin-bottom:5px}
.sf-example p{color:#166534;margin:.25rem 0}
.sf-formula{font-size:1.08rem;font-weight:900;color:#064e3b!important}
.sf-caution{border-left:4px solid #b45309;background:#fffbeb;border-radius:16px;padding:15px 17px;color:#78350f!important;line-height:1.65}
.sf-caution strong{color:#78350f}
.sf-faq details{border:1px solid #e2e8f0;background:#fff;border-radius:17px;padding:15px 17px;margin:10px 0}
.sf-faq summary{cursor:pointer;font-weight:900;color:#172033;line-height:1.45}
.sf-faq details p{margin:.65rem 0 0}
.sf-related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.sf-related-card{display:flex;flex-direction:column;min-height:150px;padding:17px;border:1px solid #dbe4ef;border-radius:18px;background:#fff;text-decoration:none;color:#172033!important}
.sf-related-card strong{font-size:1.02rem;margin-bottom:6px}
.sf-related-card span{color:#64748b;font-size:.91rem;line-height:1.55}
.sf-related-card em{font-style:normal;color:#0f766e;font-weight:900;margin-top:auto;padding-top:12px}
.sf-future-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:14px}
.sf-future-card{border:1px dashed #94a3b8;background:#f8fafc;border-radius:18px;padding:17px}
.sf-future-card span{display:inline-block;margin-bottom:7px;color:#64748b;text-transform:uppercase;letter-spacing:.1em;font-size:.68rem;font-weight:950}
.sf-future-card p{margin-bottom:0}
.sf-sr-only{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}
#root .results-panel[aria-live="polite"]{scroll-margin-top:18px}
@media(max-width:900px){.sf-seo-grid.three,.sf-seo-grid.four,.sf-input-reference,.sf-related-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.sf-methodology{grid-template-columns:1fr}}
@media(max-width:700px){.sf-breadcrumbs{padding:0 12px 12px}.sf-seo-copy{padding:0 12px 20px}.sf-seo-section{padding:18px;border-radius:20px}.sf-seo-grid,.sf-seo-grid.three,.sf-seo-grid.four,.sf-input-reference,.sf-diagram-grid,.sf-example-grid,.sf-related-grid,.sf-future-grid{grid-template-columns:1fr}.sf-source-register,.sf-comparison-table{min-width:680px}}
@media print{.sf-breadcrumbs,.sf-seo-copy{display:none!important}}

/* On-page jump nav and page-level review badge — additive, reuses
   existing design tokens, does not modify any rule above this line. */
.sf-page-reviewed{max-width:1120px;margin:0 auto 14px;padding:0 22px}
.sf-page-reviewed>*{display:block;background:#ecfdf5;border:1px solid #a7f3d0;border-radius:14px;padding:12px 15px;color:#166534;font-size:.86rem;line-height:1.55}
.sf-page-reviewed strong{color:#064e3b;font-weight:900}
.sf-toc{margin-top:18px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:20px;padding:18px 22px}
.sf-toc ol{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.sf-toc li{margin:0}
.sf-toc a{display:inline-flex;padding:8px 13px;border:1px solid #dbe4ef;background:#fff;border-radius:999px;color:#0f766e;text-decoration:none;font-weight:850;font-size:.84rem}
.sf-toc a:hover{background:#ecfdf5;border-color:#99f6e4}
@media(max-width:700px){.sf-page-reviewed{padding:0 12px}}