.mc-course.sai-intro:where(.l13-lesson) .sai-navigation>.mc-primary{white-space:nowrap;flex-shrink:0;max-width:none}.l13-lesson .l13-quote{margin:0;padding:20px;border-left:3px solid var(--sb-lesson-line,#bfd5df);background:var(--sai-blue);border-radius:0 16px 16px 0;line-height:1.8}.l13-lesson .sai-tabs{flex-wrap:wrap;gap:6px}.l13-lesson .sai-tabs button{flex:1 1 auto}.mc-course.sai-intro.l13-lesson .sai-quiz .mc-options button{align-items:center}.mc-course.sai-intro.l13-lesson .sai-quiz .mc-options button>span:nth-child(2){align-self:center;margin:0}.l13-lesson .l13-panel:not([hidden]){display:grid;gap:12px;padding-top:18px}.l13-lesson [hidden]{display:none!important}.l13-lesson .l13-path{display:grid;gap:0}.l13-lesson .l13-path>div{display:flex;gap:16px;padding:20px 0;border-bottom:1px solid var(--sai-line)}.l13-lesson .l13-path>div:last-child{border:0;padding-bottom:4px}.l13-lesson .l13-path>div>div{min-width:0;display:grid;gap:8px}.l13-lesson .l13-step{flex:none;width:36px;height:36px;display:grid;place-items:center;background:var(--sai-soft);border-radius:12px;font-size:13px;color:var(--mc-muted)}.l13-lesson .l13-audit{display:grid;gap:12px}.l13-lesson .l13-audit summary{justify-content:space-between;text-align:left;border-radius:14px;padding:12px}.l13-lesson .l13-audit .sai-disclosure-label{display:flex;align-items:center;gap:12px}.l13-lesson .l13-audit-number{font-size:12px;color:var(--mc-muted)}.l13-lesson .l13-dialogue{display:grid;gap:16px}.l13-lesson .l13-bubble{background:var(--sai-soft);padding:18px;border-radius:18px 18px 18px 4px;margin-right:20px;display:grid;gap:10px}.l13-lesson .l13-you{background:var(--sai-blue);margin-right:0;margin-left:20px;border-radius:18px 18px 4px 18px}.l13-lesson .l13-check{display:flex;align-items:flex-start;gap:12px;padding:16px 0;border-bottom:1px solid var(--sai-line);line-height:1.7}.l13-lesson .l13-check:last-child{border-bottom:0}.l13-lesson .l13-check input{appearance:none;flex:none;width:22px;height:22px;border:1px solid var(--sai-line);border-radius:50%;margin:3px 0 0;background:var(--sai-paper);cursor:pointer}.l13-lesson .l13-check input:checked{border-color:var(--mc-ink);background-color:var(--mc-ink);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='m5 12 4 4 10-10' fill='none' stroke='white' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-size:18px;background-position:center;background-repeat:no-repeat;box-shadow:none}.l13-lesson .l13-check input:focus-visible{outline:2px solid var(--mc-ink);outline-offset:3px}.l13-lesson .l13-detail-rows{list-style:none;margin:0;padding:0;display:grid;gap:10px}.l13-lesson .l13-detail-rows li{display:flex;align-items:flex-start;gap:13px;padding:16px 14px;background:var(--sai-soft);border-radius:16px;position:relative}.l13-lesson .l13-detail-rows li>div{min-width:0;display:grid;gap:5px}.l13-lesson .l13-detail-rows strong{font-size:14px;font-weight:600;line-height:1.5}.l13-lesson .l13-detail-rows p{font-size:13px;line-height:1.7;margin:0}.l13-lesson .l13-detail-symbol{position:relative;z-index:1;flex:none;width:32px;height:32px;border-radius:10px;background:var(--sai-paper);display:grid;place-items:center;color:var(--mc-ink);font-size:11px}.l13-lesson .l13-detail-symbol svg{width:20px;height:20px}.l13-lesson .l13-detail-steps{gap:0}.l13-lesson .l13-detail-steps li{background:transparent;padding:14px 0;border-radius:0}.l13-lesson .l13-detail-steps .l13-detail-symbol{background:var(--sai-blue)}.l13-lesson .l13-detail-steps li:not(:last-child):after{content:"";position:absolute;left:15px;top:46px;bottom:-14px;width:1px;background:var(--sai-line)}.l13-lesson .sai-stage-nav{justify-content:flex-end;gap:14px;align-items:center}.l13-lesson .sai-stage-nav .sai-small-btn[data-l13-dialog]{width:auto;max-width:80%;height:auto;padding:10px 14px;border-radius:100px;font-size:13px}.l13-lesson .sai-copy-box{display:grid;gap:16px}.l13-lesson textarea{width:100%;min-height:180px;font:inherit;background:var(--sai-paper);color:inherit;border:1px solid var(--sai-line);border-radius:12px;padding:12px}:where(.l13-lesson) .l13-copy-status{font-size:12px;color:var(--mc-muted)}:where(.l13-lesson) .later-rail{display:grid;gap:0}:where(.l13-lesson) .later-rail>section{display:grid;grid-template-columns:36px minmax(0,1fr);gap:14px;padding:20px 0;border-bottom:1px solid var(--sai-line)}:where(.l13-lesson) .later-rail>section:last-child{border:0}:where(.l13-lesson) .later-step{width:32px;height:32px;display:grid;place-items:center;border-radius:50%;background:var(--sai-blue);font-size:12px}:where(.l13-lesson) .later-rail h3{margin-top:2px!important}:where(.l13-lesson) .later-brief{margin:0}:where(.l13-lesson) .later-brief>div{padding:20px 0;border-bottom:1px solid var(--sai-line)}:where(.l13-lesson) .later-brief>div:last-child{border:0}:where(.l13-lesson) .later-brief dt{font-weight:600;margin-bottom:12px}:where(.l13-lesson) .later-brief dd{margin:0}:where(.l13-lesson) .later-metrics{display:grid;gap:16px}:where(.l13-lesson) .later-metrics>section{border-radius:18px;background:var(--sai-soft);padding:20px}:where(.l13-lesson) .later-metric-mark{font-size:12px;color:var(--sai-muted)}:where(.l13-lesson) .later-letter{padding:20px;border-left:2px solid var(--sb-lesson-line,#bbd3df);background:var(--sai-soft);border-radius:0 16px 16px 0}:where(.l13-lesson) .later-dialogue{display:grid;gap:14px;margin:20px 0}:where(.l13-lesson) .later-client{background:var(--sai-soft);padding:20px;border-radius:18px 18px 18px 4px;margin-right:18px}:where(.l13-lesson) .later-answer{background:var(--sai-blue);padding:20px;border-radius:18px 18px 4px 18px;margin-left:18px}:where(.l13-lesson) .later-stats,:where(.l13-lesson) .later-prices{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}:where(.l13-lesson) .later-stats>div,:where(.l13-lesson) .later-prices>section{background:var(--sai-soft);border-radius:16px;padding:18px;display:grid;gap:12px}:where(.l13-lesson) .later-stats strong{font-size:30px}:where(.l13-lesson) .later-stats span{font-size:13px;line-height:1.6}:where(.l13-lesson) .later-prices h3{font-size:21px!important}:where(.l13-lesson) .later-prices p{font-size:13px!important}:where(.l13-lesson) .later-table-cards{display:grid;gap:16px}:where(.l13-lesson) .later-table-cards>section{padding:20px;background:var(--sai-soft);border-radius:16px}:where(.l13-lesson) .later-post-section{padding:20px 0;border-bottom:1px solid var(--sai-line)}:where(.l13-lesson) .later-post-section:last-child{border:0}:where(.l13-lesson) .sai-copy-box p{white-space:pre-line}:where(.l13-lesson) .sai-tabs{flex-wrap:wrap!important;gap:8px!important}:where(.l13-lesson) .sai-tabs button{min-height:42px;flex:0 1 auto!important}:where(.l13-lesson) .sai-disclosure-label{min-width:0;white-space:normal}:where(.l13-lesson) .batch-hub{display:block;margin:16px 22px;color:inherit;font-size:12px;text-decoration:none}:where(.l13-lesson) .ed-section,:where(.l13-lesson) .ed-intro,:where(.l13-lesson) .ed-opening,:where(.l13-lesson) .ed-tabs-card,:where(.l13-lesson) .ed-conversation{padding:24px!important}:where(.l13-lesson) .ed-heading{display:flex;align-items:flex-start;gap:12px;margin:0 0 22px}:where(.l13-lesson) .ed-heading h3{margin:2px 0 0!important;flex:1;min-width:0;line-height:1.5!important}:where(.l13-lesson) .ed-icon{display:grid;place-items:center;flex:0 0 30px;width:30px;height:30px;border-radius:9px;background:var(--sai-blue);color:var(--sai-ink)}:where(.l13-lesson) .ed-icon svg{width:19px;height:19px}:where(.l13-lesson) .ed-section>p:first-of-type,:where(.l13-lesson) .ed-intro>p:first-child{margin-top:0}:where(.l13-lesson) .ed-section>p:last-child,:where(.l13-lesson) .ed-intro>p:last-child{margin-bottom:0}:where(.l13-lesson) .ed-subheading{margin:28px 0 16px!important;line-height:1.5!important}:where(.l13-lesson) .ed-subheading:first-child{margin-top:0!important}:where(.l13-lesson) .ed-context{padding:0 0 22px;margin:0 0 22px;border-bottom:1px solid var(--sai-line)}:where(.l13-lesson) .ed-note,:where(.l13-lesson) .ed-emphasis{background:var(--sai-blue);padding:20px;border-radius:18px;margin:24px 0}:where(.l13-lesson) .ed-note>p:first-child,:where(.l13-lesson) .ed-emphasis>p:first-child{margin-top:0}:where(.l13-lesson) .ed-note>p:last-child,:where(.l13-lesson) .ed-emphasis>p:last-child{margin-bottom:0}:where(.l13-lesson) .ed-emphasis p{font-weight:500}:where(.l13-lesson) .ed-example{background:var(--sai-soft);border-radius:18px;padding:20px;margin:24px 0}:where(.l13-lesson) .ed-example h3{margin:10px 0 18px!important;line-height:1.6!important}:where(.l13-lesson) .ed-example>p:last-child{margin-bottom:0}:where(.l13-lesson) .ed-example .sai-caption{display:block;margin:0}:where(.l13-lesson) .ed-fact{padding:20px 0;border-bottom:1px solid var(--sai-line)}:where(.l13-lesson) .ed-fact:last-child{border:0;padding-bottom:0}:where(.l13-lesson) .ed-fact>strong{display:block;font-weight:600;margin-bottom:10px}:where(.l13-lesson) .ed-fact>p{margin:0!important}:where(.l13-lesson) .ed-flow{list-style:none!important;margin:22px 0!important;padding:0!important;position:relative}:where(.l13-lesson) .ed-flow>li{display:grid!important;grid-template-columns:12px minmax(0,1fr);gap:16px;position:relative;padding:0 0 22px!important;margin:0!important}:where(.l13-lesson) .ed-flow>li:before{content:'';position:absolute;left:5px;top:10px;bottom:-8px;width:1px;background:#c6d9e2}:where(.l13-lesson) .ed-flow>li:last-child{padding-bottom:0!important}:where(.l13-lesson) .ed-flow>li:last-child:before{display:none}:where(.l13-lesson) .ed-flow-number{font-size:0;width:9px;height:9px;border-radius:50%;background:#abc9d8;margin-top:8px;position:relative}:where(.l13-lesson) .ed-flow>li h3{margin:0 0 10px!important}:where(.l13-lesson) .ed-flow>li p{margin:0!important}:where(.l13-lesson) .ed-steps{display:grid;gap:24px}:where(.l13-lesson) .ed-steps>section{display:flex;align-items:flex-start;gap:14px;padding-bottom:24px;border-bottom:1px solid var(--sai-line)}:where(.l13-lesson) .ed-steps>section:last-child{border:0;padding-bottom:0}:where(.l13-lesson) .ed-step{display:grid;place-items:center;flex:0 0 32px;width:32px;height:32px;border:1px solid var(--sb-lesson-line,#cbdde6);border-radius:50%;font-size:12px;background:var(--sai-blue);margin-top:2px}:where(.l13-lesson) .ed-steps>section>div{min-width:0;flex:1}:where(.l13-lesson) .ed-steps h3{margin:2px 0 16px!important}:where(.l13-lesson) .ed-steps p:last-child{margin-bottom:0}:where(.l13-lesson) .ed-day-topic{margin:24px 0!important}:where(.l13-lesson) .ed-day-topic h3{margin:0!important;line-height:1.6!important}:where(.l13-lesson) .ed-day-part{padding:22px 0;border-top:1px solid var(--sai-line)}:where(.l13-lesson) .ed-day-part>.ed-heading{margin-bottom:14px}:where(.l13-lesson) .ed-day-part>p{margin:0!important}:where(.l13-lesson) .ed-next{background:var(--sai-blue);border:0;padding:20px;border-radius:18px;margin-top:8px}:where(.l13-lesson) .ed-rubric{padding:10px 0 0}:where(.l13-lesson) .ed-rubric p{margin:0!important}:where(.l13-lesson) .ed-purpose{padding-top:8px}:where(.l13-lesson) .ed-purpose>.ed-heading{margin-bottom:16px}:where(.l13-lesson) .ed-project{background:var(--sai-blue)!important}:where(.l13-lesson) .ed-project h3{margin:12px 0!important}:where(.l13-lesson) .ed-project p{margin:0!important}:where(.l13-lesson) .ed-pair{display:grid;grid-template-columns:1fr 1fr;gap:18px}:where(.l13-lesson) .ed-pair>.sai-card{margin:0!important}:where(.l13-lesson) .ed-pair{margin:24px 0}:where(.l13-lesson) .ed-publication{border-left:2px solid var(--sb-lesson-line,#bfd4df);padding-left:20px}:where(.l13-lesson) .sai-card.ed-publication{border-left:2px solid var(--sb-lesson-line,#bfd4df)}:where(.l13-lesson) .ed-story{padding:22px;background:var(--sai-soft);border-radius:18px;margin-top:20px}:where(.l13-lesson) .ed-story>.sai-caption{display:block;margin-bottom:20px}:where(.l13-lesson) .ed-story>p:last-child{margin-bottom:0}:where(.l13-lesson) .ed-script{padding-top:14px}:where(.l13-lesson) .ed-spoken{background:var(--sai-soft);border-radius:18px;padding:20px;margin-top:22px}:where(.l13-lesson) .ed-spoken>.sai-caption{display:block;margin-bottom:16px}:where(.l13-lesson) .ed-spoken p:last-child{margin-bottom:0}:where(.l13-lesson) .ed-prompt{margin:22px 0}:where(.l13-lesson) .ed-prompt .sai-copy-box{padding:20px;border-radius:18px;background:var(--sai-soft)}:where(.l13-lesson) .ed-opening .sai-disclosure>div{padding:22px 0 0!important}:where(.l13-lesson) .ed-opening .ed-note:first-child{margin-top:0}:where(.l13-lesson) .later-letter{margin:22px 0}:where(.l13-lesson) .later-letter>p:first-of-type{margin-top:14px}:where(.l13-lesson) .later-letter>p:last-child{margin-bottom:0}:where(.l13-lesson) .later-dialogue{gap:18px;margin:24px 0}:where(.l13-lesson) .later-client,:where(.l13-lesson) .later-answer{padding:20px}:where(.l13-lesson) .later-client>p:last-child,:where(.l13-lesson) .later-answer>p:last-child{margin-bottom:0}:where(.l13-lesson) .sai-tabs{margin-bottom:24px!important}:where(.l13-lesson) .sai-tabs button{padding:10px 14px!important}:where(.l13-lesson) .later-stats{margin:24px 0}:where(.l13-lesson) .later-stats>div{min-width:0}:where(.l13-lesson) .later-metrics>section h3{margin:14px 0!important}@media(max-width:650px){:where(.l13-lesson) .ed-pair{grid-template-columns:1fr}:where(.l13-lesson) .ed-section,:where(.l13-lesson) .ed-intro,:where(.l13-lesson) .ed-opening,:where(.l13-lesson) .ed-tabs-card,:where(.l13-lesson) .ed-conversation{padding:22px!important}:where(.l13-lesson) .ed-example,:where(.l13-lesson) .ed-note,:where(.l13-lesson) .ed-emphasis,:where(.l13-lesson) .ed-story,:where(.l13-lesson) .ed-spoken{padding:18px}:where(.l13-lesson) .ed-publication{padding-left:16px}:where(.l13-lesson) .ed-steps>section{gap:12px}:where(.l13-lesson) .later-client{margin-right:10px}:where(.l13-lesson) .later-answer{margin-left:10px}}:where(.l13-lesson) .sai-content>.sai-card,:where(.l13-lesson) .ed-pair>.sai-card{display:block!important}:where(.l13-lesson) .ed-section,:where(.l13-lesson) .ed-intro,:where(.l13-lesson) .ed-opening,:where(.l13-lesson) .ed-tabs-card,:where(.l13-lesson) .ed-conversation{display:block!important}:where(.l13-lesson) .ed-opening .sai-disclosure>div{display:block!important}:where(.l13-lesson) .ed-heading{margin-bottom:18px}:where(.l13-lesson) .ed-pair{margin:20px 0}:root:not([data-color-mode=night]) .mc-course.sai-intro:where(.l13-lesson){--sai-blue:#f6f8f9}:where(.l13-lesson) .ed-heading .ed-icon{background:var(--sb-lesson-surface,#f5f5f5)}:where(.l13-lesson) .ed-section:has(.ed-steps)>.ed-heading>.ed-icon,:where(.l13-lesson) .ed-section:has(.ed-flow)>.ed-heading>.ed-icon{display:none}:where(.l13-lesson) .ed-section>h3:first-child{margin:0 0 22px!important}:where(.l13-lesson) .ed-flow>li{gap:22px;grid-template-columns:12px minmax(0,1fr)}:where(.l13-lesson) .ed-flow>li:before{background:var(--sb-lesson-surface,#dce1e3)}:where(.l13-lesson) .ed-flow-number{background:#bfc8cc}:where(.l13-lesson) .ed-step{background:var(--sai-soft);border-color:var(--sai-line)}:where(.l13-lesson) .ed-publication,:where(.l13-lesson) .later-letter{border-left-color:var(--sb-lesson-line,#d9dfe2)!important;padding-left:24px!important}:where(.l13-lesson) .later-letter{padding-top:22px;padding-bottom:22px}:where(.l13-lesson) .sai-note hr,:where(.l13-lesson) .sai-note .sai-divider{margin:24px 0!important}:where(.l13-lesson) .sai-note h3:first-child{margin-top:0!important}:where(.l13-lesson) .ed-slider{min-width:0;margin:20px 0 0}:where(.l13-lesson) .ed-slide-count{font-size:12px;color:var(--sai-muted);margin:0 0 16px}:where(.l13-lesson) .ed-slider .ed-example{margin:0!important;padding:20px}:where(.l13-lesson) .ed-slider .ed-example>.sai-caption{display:none}:where(.l13-lesson) .ed-slider .ed-example h3{margin-top:0!important}:where(.l13-lesson) .ed-slide-nav{display:flex;justify-content:center;align-items:center;gap:20px;margin-top:18px;font-size:12px;color:var(--sai-muted)}:where(.l13-lesson) .ed-slide-nav button{display:grid;place-items:center;width:40px;height:40px;padding:10px;border:1px solid var(--sai-line);border-radius:50%;background:var(--sai-paper);color:inherit;cursor:pointer}:where(.l13-lesson) .ed-slide-nav button svg{width:18px;height:18px}:where(.l13-lesson) .ed-slide-nav button:first-child svg{transform:rotate(180deg)}:where(.l13-lesson) .ed-slide-nav button:disabled{opacity:.3;cursor:default}:where(.l13-lesson) .ed-slider [hidden]{display:none!important}:where(.l13-lesson) .ed-prompt .sai-disclosure{margin:0}:where(.l13-lesson) .ed-prompt .sai-disclosure>div{padding:20px!important;background:var(--sai-soft);border-radius:16px;margin-top:14px}:where(.l13-lesson) .ed-prompt-actions{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}:where(.l13-lesson) .ed-prompt-actions .sai-small-btn{margin:0}:where(.l13-lesson) .sai-tabs{margin-bottom:18px!important}:where(.l13-lesson) .ed-tabs-card>div:not(.sai-tabs)>div>p:first-child{margin-top:0!important}:where(.l13-lesson) .sai-note>.ed-fact{padding-bottom:22px;margin-bottom:22px}:where(.l13-lesson) .sai-note>.ed-fact+p{margin-top:0!important}.mc-course.sai-intro:where(.l13-lesson) div[class$="-panel"]:not([hidden]){display:block; padding-top:8px}.mc-course.sai-intro:where(.l13-lesson) .ed-slider div[class$="-panel"]:not([hidden]){padding-top:0}:where(.l13-lesson) :not(*) .l10-opening-choice>h3{margin:0 0 22px!important}:where(.l13-lesson) :not(*) .l10-opening-choice .sai-tabs{margin-top:0!important}:where(.l13-lesson) :not(*) .l10-icon-copy{position:relative;margin-left:42px;min-width:0}:where(.l13-lesson) :not(*) .l10-icon-copy::before{content:'';position:absolute;width:1px;top:2px;bottom:2px;left:-27px;background:var(--sb-lesson-surface,#dce1e3)}:where(.l13-lesson) :not(*) .l10-icon-copy>p{margin:0 0 16px!important}:where(.l13-lesson) :not(*) .l10-icon-copy>p:last-child{margin-bottom:0!important}:where(.l13-lesson) :not(*) .later-letter{background:var(--sb-lesson-surface,#fafbfb);border-left-color:var(--sb-lesson-line,#e0e4e6)!important}:where(.l13-lesson) :not(*) .later-letter>p+p{margin-top:18px!important}:where(.l13-lesson) :not(*) .l10-reading{padding-top:8px}:where(.l13-lesson) :not(*) .l10-reading-block{margin:0 0 28px}:where(.l13-lesson) :not(*) .l10-reading-block>.ed-heading{margin-bottom:20px}:where(.l13-lesson) :not(*) .l10-reading p{margin:0 0 16px!important}:where(.l13-lesson) :not(*) .l10-reading p:last-child{margin-bottom:0!important}:where(.l13-lesson) :not(*) .l10-calendar-example{padding:16px;margin:18px 0;background:var(--sb-lesson-surface,#fafbfb);border-radius:14px}:where(.l13-lesson) :not(*) .l10-compare+.l10-compare{margin-top:24px;padding-top:24px;border-top:1px solid var(--sb-lesson-line,#e6e8e9)}:where(.l13-lesson) :not(*) .l10-compare>.sai-caption{display:block;margin-bottom:12px}:where(.l13-lesson) :not(*) .l10-reading>.ed-note{margin:0;background:var(--sb-lesson-surface,#fafbfb)}:is(:not(*),:not(*),.l13-lesson) :is(.rv-card,.rv-opening,.rv-list,.rv-steps,.rv-checks,.rv-tabs,.rv-comparison,.rv-conversation,.rv-disclosure-card){display:block!important;padding:24px!important}:is(:not(*),:not(*),.l13-lesson) .sai-card>h3:first-child{margin:0 0 22px!important}:is(:not(*),:not(*),.l13-lesson) .rv-copy{position:relative;margin-left:42px;min-width:0}:is(:not(*),:not(*),.l13-lesson) .rv-card>.rv-copy::before{content:'';position:absolute;left:-27px;top:2px;bottom:2px;width:1px;background:var(--sb-lesson-surface,#dce1e3)}:is(:not(*),:not(*),.l13-lesson) :is(.rv-copy,.rv-detail,.rv-letter,.later-client,.later-answer,.rv-existing) p{margin:0 0 18px!important}:is(:not(*),:not(*),.l13-lesson) :is(.rv-copy,.rv-detail,.rv-letter,.later-client,.later-answer) p:last-child{margin-bottom:0!important}:is(:not(*),:not(*),.l13-lesson) :is(.rv-letter,.later-letter,.ed-spoken,.ed-story){padding:22px!important;background:var(--sb-lesson-surface,#fafbfb);border-radius:16px}:is(:not(*),:not(*),.l13-lesson) .rv-letter{margin:20px 0;border:1px solid var(--sb-lesson-line,#edf0f1)}:is(:not(*),:not(*),.l13-lesson) .rv-detail{margin:22px 0}:is(:not(*),:not(*),.l13-lesson) .rv-detail:first-child{margin-top:0}:is(:not(*),:not(*),.l13-lesson) .rv-detail:last-child{margin-bottom:0}:is(:not(*),:not(*),.l13-lesson) .rv-detail .sai-disclosure>div{display:block!important;padding:24px 20px!important;background:var(--sb-lesson-surface,#fcfcfc);border-radius:16px;margin-top:16px}:is(:not(*),:not(*),.l13-lesson) .rv-detail .rv-letter{margin:0;border:0;padding:0!important;background:transparent}:is(:not(*),:not(*),.l13-lesson) .rv-detail .rv-copy{margin:24px 0 0}:is(:not(*),:not(*),.l13-lesson) .rv-card:has(.rv-detail)>.rv-copy{margin-left:0}:is(:not(*),:not(*),.l13-lesson) .rv-card:has(.rv-detail)>.rv-copy::before{display:none}:is(:not(*),:not(*),.l13-lesson) .rv-comment{margin-top:24px;padding-top:22px;border-top:1px solid var(--sb-lesson-line,#e6e8e9)}:is(:not(*),:not(*),.l13-lesson) .rv-existing>.sai-card{display:block!important}:is(:not(*),:not(*),.l13-lesson) .rv-existing .ed-spoken{margin-top:20px}:is(:not(*),:not(*),.l13-lesson) .ed-subheading{margin:26px 0 18px!important}:is(:not(*),:not(*),.l13-lesson) .ed-prompt .sai-disclosure>div{padding:24px!important;background:var(--sb-lesson-surface,#fafbfb)}:is(:not(*),:not(*),.l13-lesson) .ed-prompt .sai-disclosure>div>p{margin:0 0 18px!important}:is(:not(*),:not(*),.l13-lesson) .rv-copy:has(.ed-prompt){margin-left:0}:is(:not(*),:not(*),.l13-lesson) .rv-copy:has(.ed-prompt)::before{display:none}:is(:not(*),:not(*),.l13-lesson) .ed-flow>li p+p{margin-top:16px!important}:is(:not(*),:not(*),.l13-lesson) .later-answer{background:var(--sb-lesson-surface,#f7f9fa)}:is(:not(*),:not(*),.l13-lesson) .later-client{background:var(--sb-lesson-surface,#fafafa)}:is(:not(*),:not(*),.l13-lesson) .later-dialogue .sai-caption{display:block;margin-bottom:14px}:is(:not(*),:not(*),.l13-lesson) .rv-tabs .rv-copy{margin-left:0}:is(:not(*),:not(*),.l13-lesson) :is(.rv-tabs,.rv-comment,.rv-comparison,.rv-checks,.rv-steps) p{margin:0 0 18px!important}:is(:not(*),:not(*),.l13-lesson) :is(.rv-tabs,.rv-comment,.rv-comparison,.rv-checks,.rv-steps) p:last-child{margin-bottom:0!important}:is(:not(*),:not(*),.l13-lesson) .rv-tabs .sai-caption{display:block;margin:8px 0 18px}.l13-lesson .r13-card{padding:26px!important;margin:18px 0!important;border-radius:24px!important}.l13-lesson .r13-card h3{margin:0 0 20px!important;line-height:1.4!important}.l13-lesson .r13-card p{margin:0 0 16px!important;line-height:1.8!important;overflow-wrap:break-word}.l13-lesson .r13-card p:last-child{margin-bottom:0!important}.l13-lesson .r13-card h4{font:600 17px/1.45 Montserrat,sans-serif;margin:0 0 18px}.l13-lesson .r13-note{background:var(--sb-lesson-surface,#f3f8fa)!important;border:1px solid var(--sb-lesson-line,#e2e8eb)!important}.l13-lesson .r13-fold{padding:22px 26px!important}.l13-lesson .r13-detail>summary{padding:12px 16px!important;min-height:44px;gap:12px;line-height:1.5!important}.l13-lesson .r13-detail>div{padding:22px 0 0!important;background:transparent!important;border:0!important}.l13-lesson .r13-detail{margin:0!important}.l13-lesson .r13-context{font-size:14px!important;color:var(--sai-muted);margin-bottom:18px!important}.l13-lesson .r13-post{background:transparent;border:0;padding:0}.l13-lesson .r13-letter,.l13-lesson .r13-prompt{padding:22px;background:var(--sai-soft,#f7f7f8);border-radius:18px}.l13-lesson .r13-copy-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:18px}.l13-lesson .r13-copy-actions textarea{width:100%;min-height:180px;font:inherit}.l13-lesson .r13-slider-nav{display:flex;justify-content:center;align-items:center;gap:20px;margin:24px 0 0}.l13-lesson .r13-slider-nav button{width:44px;height:44px;min-width:44px;padding:10px;border:1px solid var(--sai-line,#ddd);border-radius:50%;background:transparent;color:inherit;display:grid;place-items:center}.l13-lesson .r13-slider-nav button:first-child svg{transform:rotate(180deg)}.l13-lesson .r13-slider-nav svg{width:22px;height:22px}.l13-lesson .r13-slider-nav button:disabled{opacity:.3}.l13-lesson .r13-slider-nav span{font-size:13px}.l13-lesson .sai-photo-wrap{margin-bottom:24px!important}.mc-course.sai-intro.l13-lesson:has(.mc-lesson-tools){padding-bottom:0!important}body:has(.l13-lesson) .app{padding-bottom:calc(240px + env(safe-area-inset-bottom))!important}body:has(.l13-lesson) .app>.footer{margin-top:40px!important;padding-bottom:0!important}.mc-course.sai-intro.l13-lesson .sai-navigation{margin-top:32px!important;margin-bottom:0!important;gap:14px;flex-wrap:wrap;scroll-margin-bottom:calc(240px + env(safe-area-inset-bottom))}.mc-course.sai-intro.l13-lesson .sai-navigation>button{min-height:44px;max-width:100%;white-space:normal}html[data-color-mode=night] .l13-lesson .r13-note{background:#2c3539!important;border-color:#465056!important}html[data-color-mode=night] .l13-lesson :is(.r13-letter,.r13-prompt){background:#303437;color:var(--mc-copy)}@media(max-width:360px){.l13-lesson .r13-card{padding:22px!important}.l13-lesson .r13-fold{padding:20px 22px!important}.l13-lesson .r13-letter,.l13-lesson .r13-prompt{padding:18px}}.l13-lesson .r13-heading{display:flex;align-items:flex-start;gap:12px;margin:0 0 22px}.l13-lesson .r13-card .r13-heading h3{margin:2px 0 0!important;flex:1;min-width:0;font-size:17px!important;line-height:1.5!important}.l13-lesson .r13-icon{width:32px;height:32px;flex:0 0 32px;display:grid;place-items:center;background:var(--sb-lesson-surface,#f5f5f5);border-radius:10px;color:var(--sb-lesson-copy,#303234)}.l13-lesson .r13-icon svg{width:21px;height:21px}.l13-lesson .r13-card h4{font-size:16px!important;margin-bottom:14px!important}.l13-lesson .r13-inset{padding:22px;border-radius:20px;background:var(--sb-lesson-surface,#f3f8fb);margin:22px 0 0;border:1px solid transparent}.l13-lesson .r13-project-context{border-color:var(--sb-lesson-line,#e1e7ea);margin:0}.l13-lesson .r13-project-context p+p{margin-top:24px!important}.l13-lesson .r13-label{font-size:11px;line-height:1.6;color:var(--sai-muted,#85888a);text-transform:uppercase;display:block;margin-bottom:16px}.l13-lesson .r13-tabs{display:flex;flex-wrap:wrap;gap:8px!important;margin:0 0 28px!important}.l13-lesson .r13-tabs button{padding:12px 16px!important;min-height:44px;font-size:14px!important;line-height:1.5;max-width:100%;white-space:normal}.l13-lesson .r13-numbered{list-style:none!important;padding:0!important;margin:24px 0!important}.l13-lesson .r13-numbered li{display:grid;grid-template-columns:34px minmax(0,1fr);gap:18px;position:relative;padding:0 0 28px!important;margin:0!important}.l13-lesson .r13-numbered li:last-child{padding-bottom:0!important}.l13-lesson .r13-numbered li:before{content:'';position:absolute;left:16px;top:34px;bottom:0;width:1px;background:var(--sb-lesson-surface,#dde2e4)}.l13-lesson .r13-numbered li:last-child:before{display:none}.l13-lesson .r13-number{font-size:13px;background:var(--sb-lesson-surface,#f2f8fa);border-radius:11px;display:grid;place-items:center;width:34px;height:34px;position:relative;z-index:1}.l13-lesson .r13-numbered h4{margin:3px 0 12px!important}.l13-lesson .r13-dots{list-style:none!important;padding:0 0 0 5px!important;margin:22px 0!important}.l13-lesson .r13-dots li{position:relative;margin:0!important;padding:0 0 23px 30px!important;border-left:1px solid var(--sb-lesson-line,#dce2e5);line-height:1.8}.l13-lesson .r13-dots li:before{content:'';width:9px;height:9px;background:#b9c9cf;border-radius:50%;position:absolute;left:-5px;top:9px}.l13-lesson .r13-dots li:last-child{padding-bottom:0!important;border-left-color:transparent}.l13-lesson .r13-checklist label{display:flex;align-items:flex-start;gap:16px;padding:22px 0;border-bottom:1px solid var(--sb-lesson-line,#e0e2e3);cursor:pointer;line-height:1.8}.l13-lesson .r13-checklist label:first-child{padding-top:4px}.l13-lesson .r13-checklist label:last-child{padding-bottom:0;border-bottom:0}.l13-lesson .r13-checklist input{appearance:none;width:23px;height:23px;flex:0 0 23px;border:1.5px solid var(--sb-lesson-line,#dce0e2);border-radius:50%;background:transparent;margin:3px 0 0;cursor:pointer}.l13-lesson .r13-checklist input:checked{background:#303234;border-color:#303234;box-shadow:inset 0 0 0 5px #fff}.l13-lesson .r13-checklist input:focus-visible{outline:2px solid #8ea8b3;outline-offset:4px}.l13-lesson .r13-letter{border-left:2px solid var(--sb-lesson-line,#c5dbe5);border-radius:0 18px 18px 0;background:var(--sb-lesson-surface,#f4f9fb);padding:22px}.l13-lesson .r13-feature-stack{display:grid;gap:12px;margin:20px 0}.l13-lesson .r13-feature-stack>div{display:flex;align-items:flex-start;gap:14px;padding:20px;border-radius:18px;background:var(--sb-lesson-surface,#f4f4f5)}.l13-lesson .r13-feature-stack .r13-icon{background:white}.l13-lesson .r13-stat-row{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:22px 0}.l13-lesson .r13-stat-row>div{background:var(--sb-lesson-surface,#f3f8fb);border-radius:16px;padding:16px 10px;text-align:center}.l13-lesson .r13-stat-row strong{display:block;font-size:24px;font-weight:500;margin-bottom:10px}.l13-lesson .r13-stat-row span{font-size:11px;line-height:1.6;display:block}.l13-lesson .r13-next h3{margin-bottom:20px!important}.l13-lesson .sai-navigation .mc-back{order:-1}html[data-color-mode=night] .l13-lesson :is(.r13-inset,.r13-number,.r13-stat-row>div){background:#2c3539;color:var(--mc-copy)}html[data-color-mode=night] .l13-lesson .r13-project-context{border-color:#465056}html[data-color-mode=night] .l13-lesson :is(.r13-icon,.r13-feature-stack>div){background:#36393b;color:var(--mc-copy)}html[data-color-mode=night] .l13-lesson .r13-checklist label{border-color:#484b4d}html[data-color-mode=night] .l13-lesson .r13-checklist input:checked{background:var(--sb-lesson-surface,#e0e7ea);box-shadow:inset 0 0 0 5px #303437}body:has(.l13-lesson) .app>.footer{font-family:Montserrat,sans-serif!important;text-align:center;line-height:1.7;font-size:11px;color:var(--sb-lesson-copy,#8a8a8a)}.mc-course.sai-intro.l13-lesson .sai-content{gap:16px!important}.mc-course.sai-intro.l13-lesson .sai-content>.r13-card{margin:0!important;padding:22px 26px!important}.mc-course.sai-intro.l13-lesson .sai-content>.r13-fold{padding:18px 26px!important}.mc-course.sai-intro.l13-lesson .sai-photo-wrap{margin:8px 0 8px!important}.mc-course.sai-intro.l13-lesson .r13-heading{margin-bottom:18px!important;align-items:center}.mc-course.sai-intro.l13-lesson .r13-card p+p{margin-top:0!important}.mc-course.sai-intro.l13-lesson .r13-card .r13-context{margin-top:18px!important}.mc-course.sai-intro.l13-lesson .r13-card .r13-detail>div{margin:0!important;padding:18px 0 0!important}.mc-course.sai-intro.l13-lesson .r13-inset{padding:18px;margin-top:18px}.mc-course.sai-intro.l13-lesson .r13-project-context p+p{margin-top:18px!important}.mc-course.sai-intro.l13-lesson .r13-slide h4{margin:0 0 12px!important}.mc-course.sai-intro.l13-lesson .r13-slider-nav{margin-top:20px}.mc-course.sai-intro.l13-lesson .r13-detail .r13-dots{margin:4px 0 0!important}.mc-course.sai-intro.l13-lesson .r13-numbered{margin:18px 0!important}.mc-course.sai-intro.l13-lesson .r13-numbered li{padding-bottom:22px!important}.mc-course.sai-intro.l13-lesson .r13-numbered li:last-child{padding-bottom:0!important}.mc-course.sai-intro.l13-lesson .sai-navigation{display:flex!important;flex-direction:row!important;flex-wrap:nowrap!important;justify-content:flex-end;gap:16px;padding:0 14px;margin-top:28px!important}.mc-course.sai-intro.l13-lesson .sai-navigation>.mc-back{order:0!important;flex:0 1 auto!important;width:auto!important;margin:0!important;padding:10px 0!important}.mc-course.sai-intro.l13-lesson .sai-navigation>.mc-primary{order:1!important;flex:0 1 auto!important;width:auto!important;margin:0!important;padding:12px 22px!important}body.sg-home-active:has(.l13-lesson) .app>.footer.sb-app-footer{margin-top:40px!important}body.sg-home-active:has(.l13-lesson) main.app{padding-bottom:calc(250px + env(safe-area-inset-bottom))!important}@media(max-width:360px){.mc-course.sai-intro.l13-lesson .sai-content>.r13-card{padding:20px!important}.mc-course.sai-intro.l13-lesson .sai-content>.r13-fold{padding:16px 20px!important}.mc-course.sai-intro.l13-lesson .sai-navigation{gap:12px;padding:0}.mc-course.sai-intro.l13-lesson .sai-navigation>.mc-primary{padding:12px 16px!important}}.mc-course.sai-intro.l13-lesson .r13-message-example{background:var(--sai-soft,#f4f7f8);border-radius:18px;padding:18px;margin:18px 0 0}.mc-course.sai-intro.l13-lesson .r13-message-example .r13-label{margin-bottom:12px}.mc-course.sai-intro.l13-lesson .r13-card .r13-after{margin-top:18px!important;color:var(--sai-muted)}.mc-course.sai-intro.l13-lesson .r13-card>.r13-letter{padding:0;background:transparent;border:0;border-radius:0}html[data-color-mode=night] .l13-lesson .r13-message-example{background:#303437;color:var(--mc-copy)}.mc-course.sai-intro.l13-lesson .r13-rail-card{--rail-axis:16px;--rail-copy:44px}.mc-course.sai-intro.l13-lesson .r13-rail-card .r13-heading{gap:12px;margin-bottom:20px!important;align-items:flex-start}.mc-course.sai-intro.l13-lesson .r13-rail-card .r13-heading h3{margin:3px 0 0!important}.mc-course.sai-intro.l13-lesson .r13-rail-card .r13-dots{margin:0!important;padding:0 0 0 var(--rail-axis)!important}.mc-course.sai-intro.l13-lesson .r13-rail-card .r13-dots li{padding:0 0 20px 27px!important;line-height:1.8}.mc-course.sai-intro.l13-lesson .r13-rail-card .r13-dots li:last-child{padding-bottom:0!important}.mc-course.sai-intro.l13-lesson .r13-rail-panel>h4{margin:0 0 14px var(--rail-copy)!important;line-height:1.5!important}.mc-course.sai-intro.l13-lesson .r13-rail-panel .r13-dots li:before{top:8px}.mc-course.sai-intro.l13-lesson .r13-rail-card .r13-slider-nav{margin-top:22px}.mc-course.sai-intro.l13-lesson .r13-checklist input{display:grid;place-items:center;color:var(--sb-lesson-copy,#303234)}.mc-course.sai-intro.l13-lesson .r13-checklist input:checked{background:transparent!important;border-color:currentColor;box-shadow:none!important}.mc-course.sai-intro.l13-lesson .r13-checklist input:checked:after{content:'';display:block;width:10px;height:6px;border-left:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-1px) rotate(-45deg)}html[data-color-mode=night] .mc-course.sai-intro.l13-lesson .r13-checklist input{color:#e0e7ea}

.mc-course.sai-intro.l13-lesson .r13-checklist label{display:grid;grid-template-columns:32px minmax(0,1fr);gap:12px}
.mc-course.sai-intro.l13-lesson .r13-checklist input{justify-self:center}