._lesson_19hhh_1{gap:20px;min-width:0;display:grid}._startSteps_19hhh_2{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0;list-style:none;display:grid;padding:0!important}._startSteps_19hhh_2 li{border:1px solid var(--student-border);background:var(--student-soft);border-radius:12px;align-content:start;gap:6px;padding:12px;display:grid}._startSteps_19hhh_2 a{min-height:44px;color:var(--student-primary);text-underline-offset:4px;align-items:center;font-weight:750;display:inline-flex}._startSteps_19hhh_2 span{color:var(--student-muted);font-size:14px}._journey_19hhh_6{flex-wrap:wrap;gap:10px;display:flex}._journey_19hhh_6 a,._link_19hhh_7{color:var(--student-primary);text-underline-offset:4px;overflow-wrap:anywhere}._journey_19hhh_6 a{border:1px solid var(--student-border);background:var(--student-surface);border-radius:12px;align-items:center;min-height:44px;padding:10px 14px;display:inline-flex}._panel_19hhh_9,._videoSection_19hhh_9{border:1px solid var(--student-border);background:var(--student-surface);min-width:0;color:var(--student-text);border-radius:20px;padding:clamp(18px,3vw,28px);scroll-margin-top:100px}._lesson_19hhh_1 h2{margin:0 0 12px;font-size:clamp(21px,3vw,27px);line-height:1.6}._lesson_19hhh_1 h3{margin:18px 0 8px;font-size:19px;line-height:1.7}._lesson_19hhh_1 p,._lesson_19hhh_1 li,._lesson_19hhh_1 dd{overflow-wrap:anywhere;line-height:1.95}._lesson_19hhh_1 p{margin:10px 0}._lesson_19hhh_1 ul,._steps_19hhh_14{padding-inline-start:24px}._steps_19hhh_14>li{margin-bottom:24px;padding-inline-start:8px}._steps_19hhh_14>li:last-child{margin-bottom:0}._glossary_19hhh_17{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}._glossary_19hhh_17 div,._example_19hhh_18,._notice_19hhh_18{background:var(--student-soft);border:1px solid var(--student-border);border-radius:12px;padding:14px}._glossary_19hhh_17 dt{color:var(--student-primary);font-weight:750}._glossary_19hhh_17 dd{margin:6px 0 0}._videoActions_19hhh_21{flex-wrap:wrap;align-items:center;gap:14px;margin:16px 0;display:flex}._button_19hhh_22{background:var(--student-primary);max-width:100%;min-height:44px;color:var(--student-on-primary);font:inherit;cursor:pointer;border:0;border-radius:12px;justify-content:center;align-items:center;padding:12px 18px;font-weight:650;line-height:1.7;text-decoration:none;display:inline-flex}._secondaryButton_19hhh_23{background:var(--student-soft);color:var(--student-primary);border:1px solid var(--student-border)}._videoRecovery_19hhh_24{border:1px solid var(--student-border);background:var(--student-soft);border-radius:12px;padding:14px}._videoRecovery_19hhh_24>a{align-items:center;min-height:44px;font-weight:750;display:inline-flex}._videoFrame_19hhh_26{aspect-ratio:16/9;background:#101820;border-radius:12px;width:100%;margin-top:16px;overflow:hidden}._videoFrame_19hhh_26 iframe{border:0;width:100%;height:100%;display:block}._small_19hhh_28{color:var(--student-muted);font-size:13px}._lesson_19hhh_1 summary{min-height:44px;color:var(--student-primary);cursor:pointer;padding:10px 0;line-height:1.8}._lesson_19hhh_1 :is(a,button,summary):focus-visible{outline:3px solid var(--student-accent);outline-offset:4px}@media (max-width:650px){._glossary_19hhh_17,._startSteps_19hhh_2{grid-template-columns:1fr}._videoActions_19hhh_21{flex-direction:column;align-items:stretch}}._page_5k266_1{min-height:100vh;color:var(--student-text);background:var(--student-bg);font-weight:400}._shell_5k266_2{width:min(1120px,100% - 48px);margin:auto;padding:24px 0 64px}._nav_5k266_3{color:var(--student-muted);justify-content:space-between;align-items:center;gap:16px;font-size:12px;display:flex}._nav_5k266_3 a{border:2px solid var(--student-border);background:var(--student-surface);min-height:44px;color:var(--student-primary);border-radius:13px;align-items:center;padding:9px 13px;font-size:13px;font-weight:650;text-decoration:none;display:inline-flex}._crumb_5k266_5{color:var(--student-muted);flex-wrap:wrap;align-items:center;gap:8px;margin:20px 0 12px;font-size:12px;display:flex}._crumb_5k266_5 a{min-height:44px;color:var(--student-primary);align-items:center;text-decoration:none;display:inline-flex}._hero_5k266_7{border-bottom:1px solid var(--student-border);margin-bottom:24px;padding:10px 0 28px}._eyebrow_5k266_8{color:var(--student-muted);font-size:12px;font-weight:550}._hero_5k266_7 h1{max-width:820px;margin:8px 0 10px;font-size:clamp(28px,3.6vw,40px);font-weight:800;line-height:1.5}._hero_5k266_7 p{color:var(--student-muted);margin:0;font-size:14px;line-height:1.8}._heroMeta_5k266_11{color:var(--student-primary);flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;font-weight:600;display:flex}._heroMeta_5k266_11 span+span:before{content:"·";color:var(--student-accent);margin-inline-end:10px}._grid_5k266_13{grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;display:grid}._chapterGrid_5k266_14{grid-template-columns:repeat(3,minmax(0,1fr))}._card_5k266_15{border:2px solid var(--student-border);background:var(--student-surface);min-width:0;min-height:225px;color:inherit;-webkit-tap-highlight-color:transparent;box-shadow:0 3px 0 color-mix(in srgb, var(--student-border) 45%, transparent);border-radius:22px;flex-direction:column;padding:24px;text-decoration:none;transition:transform .2s,border-color .2s,box-shadow .2s,background .2s;display:flex;position:relative}._card_5k266_15:after{content:"";background:var(--student-accent);border-radius:0 0 5px 5px;width:36px;height:4px;position:absolute;inset-block-start:-2px;inset-inline-end:25px}._number_5k266_17{width:fit-content;min-width:50px;min-height:50px;color:var(--student-on-primary);background:var(--student-primary);border-radius:999px;justify-content:center;align-items:center;padding:8px 17px;font-size:13px;font-weight:700;transition:transform .2s;display:inline-flex}._card_5k266_15 h2{color:var(--student-primary-dark);margin:17px 0 8px;font-size:21px;font-weight:750;line-height:1.6}._card_5k266_15 p{color:var(--student-muted);margin:0 0 14px;font-size:13px;line-height:1.6}._cardFoot_5k266_20{color:var(--student-primary);justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:12px;font-size:13px;display:flex}._cardFoot_5k266_20 b{font-weight:650}._cardFoot_5k266_20>span{border:1px solid color-mix(in srgb, var(--student-accent) 28%, transparent);background:var(--student-accent-soft);width:34px;height:34px;color:var(--student-accent-text);border-radius:50%;place-items:center;font-size:18px;transition:transform .2s,background .2s;display:grid}._reviewCard_5k266_23{border-color:color-mix(in srgb, var(--student-accent) 45%, var(--student-border));background:var(--student-accent-soft);grid-column:1/-1;min-height:190px}._reviewCard_5k266_23 ._number_5k266_17{color:var(--student-accent-text);background:color-mix(in srgb, var(--student-accent) 22%, var(--student-accent-soft))}._actions_5k266_25{flex-wrap:wrap;gap:12px;margin:22px 0;display:flex}._primary_5k266_26{min-height:44px;color:var(--student-on-primary);background:var(--student-primary);border-radius:11px;justify-content:center;align-items:center;padding:11px 18px;font-size:14px;font-weight:650;text-decoration:none;display:inline-flex}._sources_5k266_27{color:var(--student-muted);margin-top:24px;font-size:12px}._sources_5k266_27 summary{cursor:pointer;align-content:center;width:fit-content;min-height:44px}._reviewNotice_5k266_29{max-width:760px;margin:5px 0 8px;line-height:1.8}._sources_5k266_27 nav{flex-wrap:wrap;gap:8px 22px;display:flex}._sources_5k266_27 a{min-height:44px;color:var(--student-primary);text-underline-offset:4px;align-items:center;text-decoration:underline;display:inline-flex}._page_5k266_1 :is(a,summary):focus-visible{outline:3px solid var(--student-accent);outline-offset:4px}._primary_5k266_26,._nav_5k266_3 a{transition:transform .2s,background .2s,box-shadow .2s}._card_5k266_15:focus-visible{border-color:var(--student-primary);background:var(--student-soft);box-shadow:0 8px 24px color-mix(in srgb, var(--student-primary) 12%, transparent)}._card_5k266_15:focus-visible ._cardFoot_5k266_20>span{transform:translate(-4px)}._card_5k266_15:active{border-color:var(--student-accent);background:var(--student-soft);box-shadow:none;transform:scale(.985)}._primary_5k266_26:active,._nav_5k266_3 a:active{transform:scale(.97)}._nav_5k266_3 a:active{background:var(--student-soft);border-color:var(--student-primary)}@media (hover:hover) and (pointer:fine){._card_5k266_15:hover{border-color:var(--student-primary);background:var(--student-soft);box-shadow:0 12px 28px color-mix(in srgb, var(--student-primary) 13%, transparent);transform:translateY(-5px)}._card_5k266_15:hover ._number_5k266_17{transform:scale(1.06)}._card_5k266_15:hover ._cardFoot_5k266_20>span{background:color-mix(in srgb, var(--student-accent) 22%, var(--student-accent-soft));transform:translate(-4px)}._card_5k266_15:active{border-color:var(--student-accent);box-shadow:none;transform:scale(.985)}._reviewCard_5k266_23:hover{border-color:var(--student-accent);background:color-mix(in srgb, var(--student-accent) 9%, var(--student-accent-soft))}._nav_5k266_3 a:hover{background:var(--student-soft);border-color:var(--student-primary)}._primary_5k266_26:hover{box-shadow:0 5px 16px color-mix(in srgb, var(--student-primary) 23%, transparent);transform:translateY(-2px)}._primary_5k266_26:active{transform:scale(.97)}}@media (max-width:650px){._shell_5k266_2{width:calc(100% - 32px);padding:16px 0 44px}._nav_5k266_3{gap:10px}._nav_5k266_3 a{font-size:12px}._crumb_5k266_5{margin-top:14px}._hero_5k266_7{margin-bottom:20px;padding-bottom:22px}._hero_5k266_7 h1{font-size:27px}._grid_5k266_13{grid-template-columns:1fr;gap:12px}._card_5k266_15{min-height:185px;padding:21px}._card_5k266_15 h2{font-size:20px}._reviewCard_5k266_23{grid-column:auto}}@media (prefers-reduced-motion:reduce){._page_5k266_1 *,._page_5k266_1 :after{transition:none!important}._card_5k266_15:hover,._card_5k266_15:active,._card_5k266_15:hover ._number_5k266_17,._card_5k266_15:hover ._cardFoot_5k266_20>span,._nav_5k266_3 a:active,._primary_5k266_26:hover,._primary_5k266_26:active{transform:none}._card_5k266_15:focus-visible ._cardFoot_5k266_20>span{transform:none}}