.favsi-lesson-shell { background: #f4f6f8; padding: clamp(20px, 4vw, 64px) 20px; }
.favsi-lesson-content { box-sizing: border-box; max-width: 1040px; margin: 0 auto; padding: clamp(24px, 5vw, 64px); background: #fff; color: #243343; border: 1px solid #dce3e9; border-radius: 16px; line-height: 1.75; font-family: Manrope, Inter, Arial, sans-serif; font-size: 17px; overflow-wrap: break-word; }
.favsi-lesson-content * { box-sizing: border-box; }
.favsi-lesson-content h1, .favsi-lesson-content h2, .favsi-lesson-content h3 { font-family: inherit; }
.favsi-lesson-content .lesson-header { padding-bottom: 24px; border-bottom: 2px solid #dce3e9; margin-bottom: 28px; }
.favsi-lesson-content .lesson-eyebrow { font-size: 13px; font-weight: 700; color: #486071; letter-spacing: .035em; }
.favsi-lesson-content h1 { font-size: clamp(30px, 4.2vw, 48px); line-height: 1.16; letter-spacing: -.025em; margin: 16px 0; color: #142c40; }
.favsi-lesson-content h2 { font-size: clamp(23px, 2.8vw, 29px); line-height: 1.3; margin: 42px 0 16px; color: #142c40; scroll-margin-top: 110px; }
.favsi-lesson-content p { margin: 0 0 18px; }
.favsi-lesson-content .lesson-meta { font-size: 14px; color: #526576; margin: 0; }
.favsi-lesson-content .lesson-lead { font-size: clamp(18px, 2.2vw, 21px); line-height: 1.65; color: #243343; }
.favsi-lesson-content a { color: #155bbc; text-decoration: underline; text-underline-offset: .15em; overflow-wrap: anywhere; }
.favsi-lesson-content a:hover { color: #12485b; }
.favsi-lesson-content a:focus-visible, .favsi-lesson-content summary:focus-visible, .favsi-lesson-content .lesson-table-wrap:focus-visible { outline: 3px solid #bc6d22; outline-offset: 4px; }
.favsi-lesson-content ul, .favsi-lesson-content ol { padding-left: 25px; margin: 16px 0 24px; }
.favsi-lesson-content li { margin: 0 0 12px; padding-left: 4px; }
.favsi-lesson-content .lesson-toc { margin: 0 0 32px; padding: 20px 24px; background: #f4f7f9; border-radius: 10px; font-size: 14px; }
.favsi-lesson-content .lesson-toc ul { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 7px 24px; margin: 12px 0 0; padding-left: 20px; }
.favsi-lesson-content .lesson-toc li { margin: 0; }
.favsi-lesson-content .lesson-callout { background: #eef7f6; border-left: 4px solid #107478; padding: 20px 24px; margin: 28px 0; border-radius: 0 10px 10px 0; }
.favsi-lesson-content .lesson-table-wrap { max-width: 100%; overflow-x: auto; margin: 24px 0; border: 1px solid #d6e0e7; border-radius: 10px; }
.favsi-lesson-content table { border-collapse: collapse; width: 100%; min-width: 520px; margin: 0; font-size: 15px; line-height: 1.6; }
.favsi-lesson-content th, .favsi-lesson-content td { border: 0; border-bottom: 1px solid #dce3e9; text-align: left; padding: 16px; vertical-align: top; }
.favsi-lesson-content thead th { background: #142c40; color: #fff; font-weight: 700; }
.favsi-lesson-content tbody th { color: #142c40; font-weight: 700; min-width: 125px; }
.favsi-lesson-content tbody tr:nth-child(even) { background: #f6f8fa; }
.favsi-lesson-content tr:last-child th, .favsi-lesson-content tr:last-child td { border-bottom: 0; }
.favsi-lesson-content figure { margin: 30px 0; }
.favsi-lesson-content .lesson-figure img { display: block; width: 100%; max-width: 800px; height: auto; margin: 0 auto; border: 1px solid #dce3e9; border-radius: 12px; }
.favsi-lesson-content figcaption { font-size: 13px; line-height: 1.55; color: #526576; margin-top: 12px; }
.favsi-lesson-content .lesson-schematic { background: #f4f7f9; padding: 24px; border: 1px solid #dce3e9; border-radius: 12px; }
.favsi-lesson-content .lesson-flow { display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr)); gap: 20px; }
.favsi-lesson-content .lesson-flow > div, .favsi-lesson-content .lesson-zone-grid > div { position: relative; padding: 17px 14px; background: #fff; border: 1px solid #cbd8e1; border-top: 3px solid #107478; border-radius: 8px; }
.favsi-lesson-content .lesson-flow > div:not(:last-child)::after { content: '\2192'; position: absolute; right: -18px; top: 37%; color: #486071; font-size: 20px; }
.favsi-lesson-content .lesson-flow strong, .favsi-lesson-content .lesson-zone-grid strong { display: block; font-size: 15px; line-height: 1.4; color: #142c40; margin-bottom: 8px; }
.favsi-lesson-content .lesson-flow span, .favsi-lesson-content .lesson-zone-grid span { display: block; font-size: 13px; line-height: 1.55; color: #3e5363; }
.favsi-lesson-content .lesson-zone-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.favsi-lesson-content .lesson-policy-bar { background: #142c40; color: #fff; border-radius: 8px; text-align: center; padding: 14px 18px; font-size: 14px; margin-top: 18px; }
.favsi-lesson-content .lesson-check { margin: 32px 0; padding: 20px 24px; border: 1px solid #a9c9c9; border-radius: 10px; }
.favsi-lesson-content .lesson-check summary { cursor: pointer; font-weight: 700; color: #142c40; }
.favsi-lesson-content .lesson-check p { margin: 16px 0 0; }
.favsi-lesson-content .lesson-footer { border-top: 1px solid #dce3e9; margin-top: 40px; padding-top: 24px; font-size: 13px; color: #526576; }
.favsi-lesson-content .lesson-footer p:last-child { margin-bottom: 0; }
@media (max-width: 700px) {
 .favsi-lesson-shell { padding: 16px 10px; }
 .favsi-lesson-content { font-size: 16px; padding: 26px 18px; border-radius: 10px; }
 .favsi-lesson-content .lesson-toc ul { grid-template-columns: 1fr; }
 .favsi-lesson-content .lesson-flow { grid-template-columns: 1fr; gap: 22px; }
 .favsi-lesson-content .lesson-flow > div:not(:last-child)::after { content: '\2193'; right: auto; left: 50%; top: auto; bottom: -26px; }
 .favsi-lesson-content .lesson-zone-grid { grid-template-columns: 1fr; }
 .favsi-lesson-content .lesson-schematic { padding: 18px; }
 .favsi-lesson-content .lesson-callout { padding: 18px; }
 .favsi-lesson-content .lesson-check { padding: 18px; }
}
@media print {
 .favsi-lesson-shell { background: #fff; padding: 0; }
 .favsi-lesson-content { border: 0; max-width: none; padding: 0; font-size: 11pt; color: #000; }
 .favsi-lesson-content .lesson-toc { display: none; }
 .favsi-lesson-content .lesson-table-wrap { overflow: visible; }
 .favsi-lesson-content table { min-width: 0; }
 .favsi-lesson-content figure, .favsi-lesson-content .lesson-check { break-inside: avoid; }
 .favsi-lesson-content h2 { break-after: avoid; }
}