:root{--lk3-paper:#f3efe6;--lk3-ink:#111;--lk3-red:#f1272f;--lk3-blue:#345bff;--lk3-rule:rgba(17,17,17,.28)}
.lk3-lessons-index-body{margin:0;background:var(--lk3-paper);color:var(--lk3-ink);font-family:var(--lk3-font)}
.lk3-lessons-main{overflow:clip;background:var(--lk3-paper)}
.lk3-lessons-main *{box-sizing:border-box}
.lk3-lessons-hero{border-bottom:1px solid var(--lk3-ink)}
.lk3-lessons-hero-inner{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,2fr);min-height:472px;padding-top:0!important;padding-bottom:0!important}
.lk3-lessons-hero-copy{padding:clamp(64px,7vw,112px) clamp(34px,5vw,80px) clamp(64px,7vw,104px) 0;align-self:center;position:relative;z-index:2}
.lk3-lessons-eyebrow,.lk3-lessons-section-head>p,.lk3-lessons-catalog-head>div>p,.lk3-lessons-plus-inner>div>p{font-size:14px;font-weight:900;letter-spacing:.12em;text-transform:uppercase;margin:0 0 26px;display:flex;align-items:center;gap:14px}
.lk3-lessons-eyebrow:before{content:"";width:4px;height:54px;background:var(--lk3-red)}
.lk3-lessons-hero h1{font-size:clamp(52px,5.2vw,88px);font-weight:800;line-height:.94;letter-spacing:-.055em;margin:0;max-width:830px}
.lk3-lessons-hero-body{font-size:18px;line-height:1.6;max-width:720px;margin:28px 0 32px;color:#4a4138}
.lk3-lessons-button{display:inline-flex;align-items:center;gap:32px;padding:17px 22px;background:var(--lk3-red);color:#fff;text-decoration:none;font-weight:800;border:2px solid var(--lk3-red)}
.lk3-lessons-button:hover,.lk3-lessons-button:focus-visible{background:var(--lk3-ink);border-color:var(--lk3-ink)}
.lk3-lessons-explainer{margin-top:22px;max-width:590px;font-size:14px}.lk3-lessons-explainer summary{font-weight:800;cursor:pointer}.lk3-lessons-explainer p{line-height:1.55;color:#5c5147}
.lk3-lessons-hero-media{position:relative;min-width:0;width:calc(100% + max(var(--lk3-gutter-desktop,32px),calc((100vw - 1360px)/2)));margin-right:calc(0px - max(var(--lk3-gutter-desktop,32px),calc((100vw - 1360px)/2)));background:#ded7cb;overflow:hidden}
.lk3-lessons-hero-media:before{content:"";position:absolute;z-index:1;inset:0;background:linear-gradient(90deg,var(--lk3-paper) 0,rgba(243,239,230,.48) 10%,rgba(17,17,17,.1) 34%,rgba(17,17,17,.1) 100%)}
.lk3-lessons-hero-media img{width:100%;height:100%;display:block;object-fit:cover}.lk3-lessons-hero-media.is-empty{background:linear-gradient(135deg,#dfd8cc,#bcb1a1)}
.lk3-lessons-start,.lk3-lessons-catalog{padding:clamp(70px,8vw,120px) 0;border-bottom:1px solid var(--lk3-ink)}
.lk3-lessons-section-head,.lk3-lessons-catalog-head{display:flex;justify-content:space-between;align-items:end;gap:36px;margin-bottom:38px}.lk3-lessons-section-head h2,.lk3-lessons-catalog-head h2{font-size:clamp(40px,4vw,64px);letter-spacing:-.045em;line-height:1;margin:0}.lk3-lessons-section-head>p,.lk3-lessons-catalog-head>div>p{margin-bottom:14px}.lk3-lessons-catalog-head>p{margin:0 0 6px;color:#655a50}
.lk3-lessons-start-grid,.lk3-lessons-grid{display:grid;gap:0}.lk3-lessons-start-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lk3-lessons-start-grid[data-count="1"]{grid-template-columns:1fr}.lk3-lessons-grid{grid-template-columns:repeat(3, minmax(0, 1fr))}
.lk3-lessons-card{--signal:var(--lk3-red);background:var(--lk3-paper);border:2px solid var(--lk3-ink);border-top:5px solid var(--signal);margin:-2px 0 0 -2px;position:relative}.lk3-lessons-card[data-signal="cobalt"]{--signal:var(--lk3-blue)}.lk3-lessons-card[data-signal="ink"]{--signal:#111}.lk3-lessons-card[data-signal="lime"]{--signal:#bdf237}.lk3-lessons-card[data-signal="lavender"]{--signal:#9d72f7}
.lk3-lessons-card-link{color:inherit;text-decoration:none;display:flex;flex-direction:column;min-height:350px;padding:26px}.lk3-lessons-card-meta,.lk3-lessons-card-footer,.lk3-lessons-card-cta{display:flex;justify-content:space-between;gap:20px}.lk3-lessons-card-meta{font-size:14px;font-weight:900;text-transform:uppercase;letter-spacing:.1em}.lk3-lessons-card-meta span:last-child{font-size:34px;color:rgba(17,17,17,.14);letter-spacing:-.05em}.lk3-lessons-card h3{font-size:clamp(28px,2.4vw,42px);line-height:1;letter-spacing:-.04em;margin:24px 0 18px}.lk3-lessons-card-promise{line-height:1.55;color:#50473f;margin:0 0 20px}.lk3-lessons-card-topics{display:flex;gap:8px;flex-wrap:wrap}.lk3-lessons-card-topics span{border:1px solid var(--lk3-rule);padding:5px 8px;font-size:14px}.lk3-lessons-card-footer{margin-top:auto;border-top:1px solid var(--lk3-rule);padding-top:20px;font-size:14px;color:#665b52}.lk3-lessons-card-footer span:last-child{text-align:right}.lk3-lessons-card-cta{font-weight:900;margin-top:22px}
.lk3-lessons-card:hover,.lk3-lessons-card:focus-within{z-index:2;transform:translateY(-3px);box-shadow:0 3px 0 var(--lk3-ink)}.lk3-lessons-card-link:focus-visible{outline:4px solid var(--lk3-blue);outline-offset:-6px}
.lk3-lessons-filters{display:flex;gap:8px;overflow:auto;padding:0 0 22px;scrollbar-width:thin}.lk3-lessons-filters button{white-space:nowrap;border:1px solid var(--lk3-ink);background:transparent;padding:10px 15px;font:inherit;font-weight:800;cursor:pointer}.lk3-lessons-filters button.is-active,.lk3-lessons-filters button:hover{background:var(--lk3-ink);color:#fff}.lk3-lessons-filter-empty,.lk3-lessons-zero{border:2px solid var(--lk3-ink);padding:40px}.lk3-lessons-zero h3{font-size:32px;margin:0 0 12px}.lk3-lessons-zero p{margin:0;color:#5d534a}
.lk3-lessons-plus{background:#101010;color:#f5f1e8;padding:clamp(64px,7vw,100px) 0}.lk3-lessons-plus-inner{display:grid;grid-template-columns:1fr 1fr;gap:clamp(40px,8vw,130px);align-items:end}.lk3-lessons-plus h2{font-size:clamp(38px,4vw,66px);line-height:1;letter-spacing:-.045em;margin:0}.lk3-lessons-plus-inner>div>p:first-child{color:#5f7cff}.lk3-lessons-plus-inner>div:last-child>p{line-height:1.6;color:#cfc8bd}.lk3-lessons-plus a{display:inline-flex;justify-content:space-between;gap:28px;color:#fff;text-decoration:none;font-weight:900;border-bottom:2px solid var(--lk3-red);padding:10px 0}
@media(max-width:1024px){.lk3-lessons-hero-inner{grid-template-columns:1.1fr .9fr}.lk3-lessons-grid{grid-template-columns:repeat(2, minmax(0, 1fr))}.lk3-lessons-start-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:720px){.lk3-lessons-hero-inner{display:flex;flex-direction:column}.lk3-lessons-hero-copy{padding:58px 0}.lk3-lessons-hero h1{font-size:clamp(46px,14vw,68px)}.lk3-lessons-hero-media{min-width:calc(100% + 40px);width:calc(100% + 40px);height:340px;margin-left:-20px;margin-right:-20px}.lk3-lessons-section-head,.lk3-lessons-catalog-head{display:block}.lk3-lessons-catalog-head>p{margin-top:18px}.lk3-lessons-grid,.lk3-lessons-start-grid{grid-template-columns: 1fr}.lk3-lessons-card-link{min-height:310px}.lk3-lessons-plus-inner{grid-template-columns: 1fr}}
@media(prefers-reduced-motion:reduce){.lk3-lessons-card,.lk3-lessons-button{transition:none!important}.lk3-lessons-card:hover{transform:none}}

/* QA-11: approved editorial Start frame and spaced catalogue. */
.lk3-lessons-grid{gap:26px}
.lk3-lessons-card{margin:0;transition:transform .18s ease,background .18s ease}
.lk3-lessons-card-link{min-height:356px;height:100%}
.lk3-lessons-card-meta{min-height:54px;color:#726d65}
.lk3-lessons-card-meta span:last-child{font-size:48px;line-height:1;color:var(--signal);opacity:.28}
.lk3-lessons-card h3{font-size:clamp(30px,2vw,38px);font-weight:800;margin:13px 0;line-height:1.02}
.lk3-lessons-section-head h2{font-size:clamp(38px,3vw,50px);font-weight:800}
.lk3-lessons-section-head>p{max-width:420px;font-size:16px;font-weight:400;line-height:1.6;letter-spacing:0;text-transform:none;color:#746f67;margin:0}
.lk3-lessons-start-grid{gap:0;border:2px solid var(--lk3-ink)}
.lk3-lessons-start-grid[data-count="2"]{grid-template-columns:repeat(2,minmax(0,1fr))}
.lk3-lessons-start-entry{min-width:0;background:#fbf8f1;border-right:2px solid var(--lk3-ink);position:relative;overflow:hidden}
.lk3-lessons-start-entry:last-child{border-right:0}
.lk3-lessons-start-entry .lk3-lessons-card-link{min-height:278px;padding:26px 25px 24px}
.lk3-lessons-start-type{font-size:14px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#746f67}
.lk3-lessons-start-entry h3{margin:32px 0 12px;font-size:clamp(25px,1.9vw,33px);line-height:1.02;letter-spacing:-.04em;font-weight:800}
.lk3-lessons-start-entry p{margin:0;color:#746f67;font-size:16px;line-height:1.5;max-width:340px}
.lk3-lessons-start-footer{margin-top:auto;padding-top:24px;display:flex;justify-content:space-between;gap:20px;align-items:end;color:var(--lk3-blue);font-size:14px;font-weight:750}
.lk3-lessons-start-footer span:last-child{font-size:22px;color:var(--lk3-ink)}
.lk3-lessons-start-entry.lead:after{content:"";position:absolute;right:-18px;bottom:-24px;width:104px;height:104px;border:2px solid var(--lk3-blue);border-radius:50%;opacity:.28;pointer-events:none}
.lk3-lessons-start-entry:hover{background:#f0ece3}
.lk3-lessons-start-entry a:focus-visible{outline:3px solid var(--lk3-blue);outline-offset:-3px}
.lk3-lessons-plus-inner{grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:60px}
.lk3-lessons-plus h2{font-size:clamp(34px,3.2vw,48px);font-weight:800;line-height:1.03;max-width:800px}
.lk3-lessons-plus-inner>div>.lk3-lessons-plus-intro{color:#cfc8bd;font-weight:400;letter-spacing:0;text-transform:none;font-size:15px;line-height:1.6;max-width:800px;margin:22px 0 0}
.lk3-lessons-plus a.lk3-lessons-button{padding:18px 26px;border:2px solid var(--lk3-red);background:var(--lk3-red);border-radius:8px;white-space:nowrap;transition:background .18s,border-color .18s}
.lk3-lessons-plus a.lk3-lessons-button:hover,.lk3-lessons-plus a.lk3-lessons-button:focus-visible{background:#c51d25;border-color:#c51d25;color:#fff;outline:3px solid #fff;outline-offset:4px}
@media(max-width:1024px){.lk3-lessons-start-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.lk3-lessons-plus-inner{gap:32px}}
@media(max-width:760px){.lk3-lessons-start-grid,.lk3-lessons-start-grid[data-count="2"]{grid-template-columns:1fr}.lk3-lessons-start-entry{border-right:0;border-bottom:2px solid var(--lk3-ink)}.lk3-lessons-start-entry:last-child{border-bottom:0}.lk3-lessons-section-head>p{margin-top:18px}.lk3-lessons-plus-inner{grid-template-columns:1fr}.lk3-lessons-plus a.lk3-lessons-button{justify-self:start;white-space:normal}}

/* QA12 · durable completion counts on active series */
.lk3-lessons-card-progress{margin:16px 0;color:var(--lk3-lessons-ink,#151515);font-size:14px;line-height:1.4;font-weight:700}
.lk3-lessons-card-progress>div{height:5px;margin-top:7px;background:rgba(21,21,21,.12);overflow:hidden}
.lk3-lessons-card-progress i{display:block;height:100%;background:#ef2b2d}