.shaft-fit-guide{--sf-ink:#17252e;--sf-muted:#52636e;--sf-line:#d7e0e5;--sf-soft:#f3f6f8;--sf-green:#087f5b;color:var(--sf-ink)}.shaft-fit-guide .sf-shell{width:min(1120px,calc(100% - 40px));margin:0 auto}.sf-hero{padding:72px 0 54px;background:linear-gradient(135deg,#10232e,#194256);color:#fff}.sf-eyebrow{font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#aee3cf}.sf-hero h1,.sf-hero h2{max-width:850px;margin:10px 0 16px;font-size:clamp(2.2rem,5vw,4.6rem);line-height:1.02}.sf-lead{max-width:780px;font-size:1.15rem;color:#e5eef2}.sf-section{padding:58px 0}.sf-section--soft{background:var(--sf-soft)}.sf-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.sf-card{padding:24px;border:1px solid var(--sf-line);border-radius:16px;background:#fff}.sf-card h2,.sf-card h3{margin-top:0}.sf-rule{border-left:5px solid var(--sf-green)}.sf-table-wrap{overflow-x:auto;border:1px solid var(--sf-line);border-radius:14px;background:#fff}.sf-table{width:100%;border-collapse:collapse;min-width:760px}.sf-table th,.sf-table td{padding:15px;text-align:left;vertical-align:top;border-bottom:1px solid var(--sf-line)}.sf-table th{background:#e9f1f4}.sf-warning{padding:22px;border-radius:14px;background:#fff6df;border:1px solid #e8cf8a}.sf-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}.sf-button{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:12px 19px;border-radius:8px;background:#087f5b;color:#fff!important;text-decoration:none;font-weight:700}.sf-button--outline{background:transparent;color:#17252e!important;border:2px solid #17252e}.sf-checklist{columns:2;column-gap:38px}.sf-checklist li{break-inside:avoid;margin:0 0 12px}.sf-small{color:var(--sf-muted);font-size:.94rem}@media(max-width:800px){.sf-grid{grid-template-columns:1fr}.sf-checklist{columns:1}.sf-hero{padding:52px 0 40px}}@media(max-width:520px){.shaft-fit-guide .sf-shell{width:min(100% - 28px,1120px)}.sf-section{padding:42px 0}.sf-button{width:100%}}
/* Visible guide breadcrumb — 2026-08-30 */
.sf-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;width:min(1120px,calc(100% - 40px));margin:0 auto;padding:14px 0;color:#52636e;font-size:.92rem}.sf-breadcrumb a{color:#174f68;text-decoration:underline;text-underline-offset:3px}.sf-breadcrumb span[aria-current=page]{font-weight:700;color:#263640}@media(max-width:520px){.sf-breadcrumb{width:min(100% - 28px,1120px);padding:12px 0;font-size:.86rem}}

/* Related resource cards — 2026-08-30 */
.sf-related-resources{border-top:1px solid #d7e0e5}.sf-related-resources .sf-card h3 a{color:#174f68;text-decoration:none}.sf-related-resources .sf-card h3 a:hover,.sf-related-resources .sf-card h3 a:focus-visible{text-decoration:underline;text-underline-offset:4px}