/* Approved Turtle Lab palette and type: navy, ivory, muted sea green.
   One example document shows the information structure, without simulating an AI result. */
.sf-section{padding-block:80px;scroll-margin-top:110px;color:var(--brand-navy,#23394c)}
.sf-intro{max-width:720px}.sf-intro h2{font-family:var(--brand-mincho);font-size:clamp(29px,3.3vw,42px);font-weight:500;line-height:1.65;letter-spacing:.03em;margin:0 0 24px}
.sf-lead{font-size:16px;line-height:2;color:var(--brand-slate,#52616d);max-width:640px;margin:0 0 24px}
.sf-included{font-size:14px;line-height:1.9;font-weight:600;padding-left:15px;border-left:3px solid var(--rc-accent,#426b68);margin:0}
.sf-layout{display:grid;grid-template-columns:1.12fr 1fr;gap:64px;align-items:center;margin-top:44px}
.sf-methods article{display:grid;grid-template-columns:72px 1fr;gap:20px;padding:25px 0;border-top:1px solid var(--brand-line,#dcdcd5)}
.sf-label{font:400 31px/1.3 var(--brand-serif);letter-spacing:-.02em;margin:0;color:var(--rc-accent,#426b68)}
.sf-methods h3{font-family:var(--brand-body);font-size:16px;font-weight:600;line-height:1.8;margin:0 0 10px}.sf-methods article div p{font-size:14px;line-height:2;margin:0;color:var(--brand-slate)}
.sf-definition{font-size:12px;line-height:1.9;color:var(--brand-slate);margin:10px 0 0}
.sf-example{margin:0;padding:30px 32px;background:var(--rc-soft,#edf1f0);border-top:3px solid var(--rc-accent,#426b68)}
.sf-example figcaption{font-size:12px;line-height:1.8;color:var(--brand-slate);display:flex;justify-content:space-between;gap:12px}
.sf-example-name{font:400 26px/1.4 var(--brand-serif);letter-spacing:.08em;margin:25px 0 22px}
.sf-example dl{margin:0}.sf-example dl>div{padding:17px 0;border-top:1px solid var(--rc-line,#ced8d6)}
.sf-example dt{font-size:12px;color:var(--rc-accent);line-height:1.8;margin-bottom:7px}.sf-example dd{font-size:15px;line-height:1.9;margin:0}.sf-example dd small{display:block;font-size:11px;color:var(--brand-slate);margin-top:5px}
.sf-example-note{font-size:12px;line-height:1.9;margin:13px 0 0;color:var(--brand-slate)}
.sf-details{border-top:1px solid var(--brand-line);border-bottom:1px solid var(--brand-line);margin-top:42px}.sf-details summary{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:60px;cursor:pointer;list-style:none;font-size:14px}.sf-details summary::-webkit-details-marker{display:none}.sf-details summary>span{font-size:21px;font-weight:400}.sf-details[open] summary>span{transform:rotate(45deg)}.sf-details ul{padding-left:20px;margin:0 0 22px;font-size:14px;line-height:2.2;color:var(--brand-slate)}
.sf-note{font-size:12px;line-height:1.95;color:var(--brand-slate);margin:20px 0;max-width:900px}.sf-link{display:inline-flex;align-items:center;gap:28px;min-height:44px;font-size:14px;border-bottom:1px solid var(--rc-accent);text-decoration:none;color:var(--rc-accent)}.sf-link:hover{color:var(--brand-navy)}.sf-link:focus-visible,.sf-details summary:focus-visible{outline:3px solid var(--rc-accent);outline-offset:5px}
.dh-search-included{font-size:13px;line-height:1.9;margin:18px 0 0}.dh-search-included a{display:inline-block;padding-bottom:4px;border-bottom:1px solid var(--rc-accent);color:var(--rc-accent);text-decoration:none}.dh-search-included a:focus-visible{outline:3px solid var(--rc-accent);outline-offset:5px}
@media(max-width:820px){.sf-layout{gap:32px;grid-template-columns:1fr 1fr}.sf-methods article{grid-template-columns:1fr;gap:12px}.sf-example{padding:26px}}
@media(max-width:640px){.sf-section{padding-block:52px;scroll-margin-top:90px}.sf-intro h2{font-size:29px;margin-bottom:20px}.sf-lead{font-size:15px}.sf-included{font-size:13px}.sf-layout{grid-template-columns:1fr;gap:30px;margin-top:30px}.sf-methods article{grid-template-columns:62px 1fr;gap:15px;padding:23px 0}.sf-label{font-size:28px}.sf-methods h3{font-size:15px}.sf-methods article div p{font-size:14px}.sf-example{padding:25px 23px}.sf-details{margin-top:28px}.sf-example figcaption{font-size:11px}.sf-link{font-size:13px}.dh-search-included{font-size:12px}}