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svg{width:28px;height:26px;overflow:visible}.brand-line{stroke:var(--colour-white-faint);stroke-width:2.5px;stroke-linecap:round}.brand-node{fill:var(--colour-white)}.brand-node.is-action{fill:var(--colour-lime)}.brand-check{stroke:var(--colour-white);stroke-width:2.5px}.brand-word{font-size:var(--font-title-size);font-weight:var(--font-title-weight);line-height:var(--font-title-line)}.brand-word span:last-child{color:var(--colour-lime)}.site-nav{color:var(--colour-white-subtle);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);align-items:center;gap:18px;display:flex}.site-nav a:hover{color:var(--colour-white)}.page-wrap{flex:1;padding:56px 0 80px}.site-footer{color:var(--colour-muted);border-top:1px solid var(--colour-border);justify-content:space-between;align-items:center;gap:20px;padding:28px 0 40px;display:flex}:is(body:has(.feed-shell) .site-header,body:has(.feed-shell) .site-footer){display:none}body:has(.feed-shell) 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p{max-width:620px;color:var(--colour-white-subtle);font-size:var(--font-subhead-size);font-weight:var(--font-subhead-weight);line-height:var(--font-subhead-line);margin:0}.hero-actions,.lesson-actions{flex-wrap:wrap;gap:12px;margin-top:28px;display:flex}.button-primary,.button-secondary{min-height:44px;font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);border-radius:12px;justify-content:center;align-items:center;padding:0 16px;display:inline-flex}.button-primary{color:var(--colour-white);background:var(--colour-blue);cursor:pointer;border:0}.button-secondary{color:var(--colour-white);border:1px solid var(--colour-border-2);background:var(--surface-soft)}.feed-list{gap:18px;display:grid}.feed-shell{background:var(--colour-darkest);grid-template-columns:clamp(220px,16vw,300px) minmax(0,1fr);min-height:100svh;display:grid}.feed-menu{border-right:1px solid 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span:first-child{width:34px;height:34px;color:var(--colour-white);place-items:center;display:inline-grid}.feed-menu-item:hover,.feed-menu-item.is-active{color:var(--colour-blue);background:var(--surface-soft)}.feed-menu-item:active{transform:scale(.98)}.feed-menu-item:hover span:first-child,.feed-menu-item.is-active span:first-child{color:var(--colour-blue)}.feed-menu-item.is-muted,.feed-menu-item.is-muted span:first-child{color:var(--colour-muted)}.feed-menu-button:hover{color:var(--colour-blue);background:var(--surface-soft)}.feed-menu-button:hover span:first-child{color:var(--colour-blue)}.feed-login{min-height:48px;color:var(--colour-white);background:var(--colour-blue);font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);border-radius:12px;justify-content:center;align-items:center;transition:background-color .16s,transform .16s,box-shadow .16s;display:inline-flex}.feed-login:hover{background:var(--colour-blue-2);box-shadow:0 14px 30px color-mix(in srgb, var(--colour-blue) 30%, transparent)}.feed-login:active{transform:scale(.98)}.feed-menu-footer{border-top:1px solid var(--colour-border);color:var(--colour-mid);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);gap:8px;margin-top:auto;padding-top:18px;display:grid}.feed-stage{min-width:0;height:100svh;position:relative;overflow:hidden}.feed-scroll{scroll-snap-type:y mandatory;overscroll-behavior-y:contain;scrollbar-width:none;height:100%;overflow-y:auto}.feed-scroll::-webkit-scrollbar{display:none}.feed-slide{scroll-snap-align:start;scroll-snap-stop:always;place-items:center;height:100%;min-height:100%;padding:clamp(16px,2.5vw,40px);display:grid}.feed-card-shell{grid-template-columns:minmax(0,max-content) clamp(66px,5.5vw,92px);justify-content:center;align-items:center;gap:clamp(12px,2vw,24px);width:min(100%,1380px);display:grid;position:relative}.lesson-feed-card{--lesson-card-max-block:calc(100svh - clamp(48px, 7vw, 96px));width:min(calc(var(--lesson-card-max-block) * var(--lesson-aspect)), min(62vw, 960px));max-width:100%;max-height:var(--lesson-card-max-block);background:var(--colour-dark-2);aspect-ratio:var(--lesson-aspect);border-radius:18px;display:grid;position:relative}.lesson-feed-card.is-landscape{width:min(calc(var(--lesson-card-max-block) * var(--lesson-aspect)), min(62vw, 960px))}.lesson-feed-card.is-portrait{width:min(calc(var(--lesson-card-max-block) * var(--lesson-aspect)), min(44vw, 520px))}.lesson-feed-card.is-square{width:min(calc(var(--lesson-card-max-block) * var(--lesson-aspect)), min(58vw, 760px))}.lesson-feed-card .media-image{object-fit:contain}.feed-slide-track{scroll-snap-type:x mandatory;overscroll-behavior-x:contain;scrollbar-width:none;display:flex;position:absolute;inset:0;overflow-x:auto}.feed-slide-track::-webkit-scrollbar{display:none}.feed-slide-frame{scroll-snap-align:center;scroll-snap-stop:always;background:radial-gradient(circle at center, var(--colour-dark-3), transparent 62%), var(--colour-darkest);min-width:100%;display:block;position:relative}.feed-mute-button{z-index:5;width:46px;height:46px;color:var(--colour-white);cursor:pointer;filter:drop-shadow(0 2px 10px color-mix(in srgb, var(--colour-darkest) 84%, transparent));background:0 0;border:0;border-radius:999px;place-items:center;transition:background-color .16s,transform .16s;display:grid;position:absolute;top:24px;left:24px}.feed-mute-button:hover{background:color-mix(in srgb, var(--surface-header) 72%, transparent);transform:translateY(-1px)}.feed-mute-button:active{transform:scale(.94)}.feed-video-player{background:var(--colour-darkest);--media-object-fit:contain;--controls:none;width:100%;height:100%;display:block}.feed-slide-controls{z-index:4;pointer-events:none;justify-content:space-between;display:flex;position:absolute;inset:50% 14px auto;transform:translateY(-50%)}.feed-slide-button{border:1px solid color-mix(in srgb, var(--colour-white) 64%, transparent);width:42px;height:42px;color:var(--colour-white);box-shadow:none;-webkit-backdrop-filter:blur(16px)saturate(140%);backdrop-filter:blur(16px)saturate(140%);filter:drop-shadow(0 1px 2px color-mix(in srgb, var(--colour-darkest) 76%, transparent));cursor:pointer;pointer-events:auto;font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);background:0 0;border-radius:999px;place-items:center;transition:background-color .16s,border-color .16s,transform .16s;display:grid}.feed-slide-button:hover{border-color:var(--colour-white);background:0 0;transform:translateY(-1px)}.feed-slide-button:active{transform:scale(.94)}.feed-gradient{pointer-events:none;background:linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--colour-darkest) 8%, transparent) 18%, color-mix(in srgb, var(--colour-darkest) 28%, transparent) 42%, color-mix(in srgb, var(--colour-darkest) 70%, transparent) 72%, color-mix(in srgb, var(--colour-darkest) 88%, transparent) 100%);height:42%;position:absolute;inset:auto 0 0}.feed-card-copy{z-index:2;gap:8px;padding:clamp(18px,3vw,28px);display:grid;position:absolute;inset:auto 0 0}.feed-pill-row{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.feed-chip{width:fit-content;min-height:26px;color:var(--category-text);border:1px solid color-mix(in srgb, var(--category-colour) 50%, transparent);background:color-mix(in srgb, var(--category-colour) 26%, var(--surface-header));font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);border-radius:999px;align-items:center;gap:5px;padding:0 10px;display:inline-flex}.feed-chip svg{flex:none}.feed-dots{align-items:center;gap:5px;display:inline-flex}.feed-dots span{border-radius:999px;width:18px;height:6px;position:relative}.feed-dots span:after{content:"";background:var(--colour-white-faint);border-radius:999px;width:6px;height:6px;transition:width .16s,background-color .16s;position:absolute;top:0;left:50%;transform:translate(-50%)}.feed-dots span.is-active:after{background:var(--colour-lime);width:18px}.feed-dots span.is-done:after{background:color-mix(in srgb, var(--colour-lime) 50%, transparent)}.feed-copy-panel{gap:8px;width:min(100%,760px);padding:2px 0;display:grid}.feed-title{color:var(--colour-white);font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);text-shadow:0 2px 8px color-mix(in srgb, var(--colour-darkest) 85%, transparent)}.feed-summary{width:100%;color:var(--colour-white-subtle);text-align:left;font-size:var(--font-body-size);font-weight:var(--font-body-weight);line-height:var(--font-body-line);cursor:pointer;background:0 0;border:0;padding:0;display:block}.feed-summary span{color:var(--colour-blue)}.feed-collapse-hint,.feed-copy-collapsed{cursor:pointer;background:0 0;border:0;padding:0}.feed-collapse-hint{color:color-mix(in srgb, var(--colour-white) 32%, transparent);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);justify-self:end}.feed-copy-collapsed{width:min(100%,760px);color:var(--colour-white);font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);text-align:left;text-shadow:0 2px 8px color-mix(in srgb, var(--colour-darkest) 85%, transparent);justify-content:space-between;align-items:center;gap:12px;display:flex}.feed-copy-collapsed span:first-child{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.feed-action-step{border:1px solid color-mix(in srgb, var(--colour-blue) 25%, transparent);width:min(100%,760px);color:var(--colour-success-text);background:color-mix(in srgb, var(--colour-blue) 15%, transparent);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);border-radius:10px;align-items:flex-start;gap:8px;padding:10px;display:flex}.feed-action-step-dot{width:20px;height:20px;color:var(--colour-white);background:var(--colour-blue);border-radius:999px;flex:none;place-items:center;display:inline-grid}.feed-action-rail,.feed-jump-rail{justify-items:center;gap:16px;display:grid}.feed-top-actions{z-index:30;min-height:56px;color:var(--colour-white);background:color-mix(in srgb, var(--colour-white) 14%, var(--colour-darkest));box-shadow:0 16px 38px color-mix(in srgb, var(--colour-darkest) 44%, transparent);border-radius:999px;align-items:center;gap:16px;padding:8px 10px 8px 18px;display:inline-flex;position:fixed;top:clamp(18px,3vw,32px);right:clamp(18px,3vw,44px)}.feed-top-link,.feed-top-login{min-height:40px;color:var(--colour-white);font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);border:0;border-radius:999px}.feed-top-link{cursor:pointer;background:0 0;align-items:center;gap:8px;padding:0;display:inline-flex}.feed-top-link svg{flex:none}.feed-top-divider{background:color-mix(in srgb, var(--colour-white) 22%, transparent);width:1px;height:28px}.feed-top-login{background:var(--colour-blue);cursor:pointer;align-items:center;gap:8px;padding:0 22px;transition:background-color .16s,transform .16s,box-shadow .16s;display:inline-flex}.feed-top-login:hover{background:var(--colour-blue-2);box-shadow:0 14px 28px color-mix(in srgb, var(--colour-blue) 24%, transparent)}.feed-top-login:active{transform:scale(.97)}.feed-auth-state{align-items:center;gap:10px;display:inline-flex}.feed-auth-state>span{max-width:160px;color:var(--colour-white-subtle);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.web-auth-backdrop{z-index:80;background:color-mix(in srgb, var(--colour-darkest) 72%, transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);place-items:center;padding:18px;display:grid;position:fixed;inset:0}.web-auth-dialog{border:1px solid var(--colour-border-2);background:var(--colour-dark);width:min(100%,420px);box-shadow:0 28px 70px color-mix(in srgb, var(--colour-darkest) 58%, transparent);border-radius:20px;padding:22px}.web-auth-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.web-auth-header .eyebrow{margin:0}.web-auth-header button{border:1px solid var(--colour-border-2);width:38px;height:38px;color:var(--colour-white);background:var(--surface-soft);cursor:pointer;font-size:var(--font-title-size);font-weight:var(--font-title-weight);line-height:var(--font-title-line);border-radius:999px;place-items:center;display:grid}.web-auth-dialog h2{font-size:var(--font-display-size);font-weight:var(--font-display-weight);line-height:var(--font-display-line);text-align:center;margin:14px 0 8px}.web-auth-form{gap:14px;margin-top:16px;display:grid}.web-auth-socials{gap:10px;margin-top:20px;display:grid}.web-auth-socials button{border:1px solid var(--colour-border-2);min-height:48px;color:var(--colour-white);background:var(--surface-soft);cursor:pointer;font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);border-radius:12px;justify-content:center;align-items:center;gap:10px;transition:border-color .16s,background-color .16s,transform .16s;display:inline-flex}.web-auth-socials button:hover{border-color:var(--colour-blue);background:color-mix(in srgb, var(--colour-blue) 12%, var(--surface-soft))}.web-auth-socials button:active{transform:scale(.98)}.web-auth-socials span{border:1px solid var(--colour-border-2);width:24px;height:24px;font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);border-radius:999px;place-items:center;display:inline-grid}.web-auth-terms{color:var(--colour-muted);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);margin:12px 0 0}.web-auth-terms a{color:var(--colour-white);text-underline-offset:3px;text-decoration:underline}.web-auth-divider{color:var(--colour-muted);grid-template-columns:1fr auto 1fr;align-items:center;gap:10px;margin-top:16px;display:grid}.web-auth-divider span{background:var(--colour-border-2);height:1px}.web-auth-divider em{font-style:normal;font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line)}.web-auth-form label{color:var(--colour-white);font-size:var(--font-label-size);font-weight:var(--font-label-weight);line-height:var(--font-label-line);gap:8px;display:grid}.web-auth-form input{border:1px solid var(--colour-border-2);width:100%;min-height:52px;color:var(--colour-white);background:var(--surface-soft);font-size:var(--font-body-size);font-weight:var(--font-body-weight);line-height:var(--font-body-line);border-radius:12px;outline:none;padding:12px 14px}.web-auth-form input:focus{border-color:var(--colour-blue)}.web-auth-error{color:var(--colour-danger);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);margin:0}.web-auth-submit{cursor:pointer;border:0;width:100%}.web-auth-submit:disabled{cursor:wait;opacity:.7}.app-download-backdrop{z-index:90;background:color-mix(in srgb, var(--colour-darkest) 76%, transparent);-webkit-backdrop-filter:blur(16px);backdrop-filter:blur(16px);place-items:center;padding:18px;display:grid;position:fixed;inset:0}.app-download-dialog{border:1px solid var(--colour-border-2);background:radial-gradient(circle at top right, color-mix(in srgb, var(--colour-lime) 18%, transparent), transparent 18rem), radial-gradient(circle at bottom left, color-mix(in srgb, var(--colour-blue) 24%, transparent), transparent 20rem), var(--colour-dark);width:min(100%,720px);box-shadow:0 34px 90px color-mix(in srgb, var(--colour-darkest) 68%, transparent);border-radius:24px;padding:clamp(18px,3vw,28px)}.app-download-header{justify-content:space-between;align-items:center;gap:16px;display:flex}.app-download-header button{border:1px solid var(--colour-border-2);width:40px;height:40px;color:var(--colour-white);background:var(--surface-soft);cursor:pointer;font-size:var(--font-title-size);font-weight:var(--font-title-weight);line-height:var(--font-title-line);border-radius:999px;place-items:center;display:grid}.app-download-grid{grid-template-columns:minmax(0,1fr) minmax(180px,220px);align-items:center;gap:clamp(18px,4vw,34px);margin-top:26px;display:grid}.app-download-copy{gap:14px;display:grid}.app-download-copy .eyebrow{margin:0}.app-download-copy h2{color:var(--colour-white);font-size:var(--font-display-size);font-weight:var(--font-display-weight);line-height:var(--font-display-line);margin:0}.app-download-copy p{max-width:460px;color:var(--colour-white-subtle);font-size:var(--font-subhead-size);font-weight:var(--font-subhead-weight);line-height:var(--font-subhead-line);margin:0}.app-store-row{flex-wrap:wrap;gap:10px;margin-top:8px;display:flex}.store-button{border:1px solid var(--colour-border-2);min-height:46px;color:var(--colour-white);background:color-mix(in srgb, var(--colour-white) 8%, transparent);font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);border-radius:14px;justify-content:center;align-items:center;gap:8px;padding:0 14px;display:inline-flex}.qr-card{border:1px solid var(--colour-border);background:color-mix(in srgb, var(--surface-card) 86%, transparent);border-radius:22px;justify-items:center;gap:12px;padding:18px;display:grid}.qr-card p{color:var(--colour-muted);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);margin:0}.qr-placeholder{aspect-ratio:1;background:linear-gradient(90deg, var(--colour-white) 12px, transparent 12px) 18px 18px / 42px 42px no-repeat, linear-gradient(180deg, var(--colour-white) 12px, transparent 12px) 18px 18px / 42px 42px no-repeat, linear-gradient(270deg, var(--colour-white) 12px, transparent 12px) calc(100% - 18px) 18px / 42px 42px no-repeat, linear-gradient(180deg, var(--colour-white) 12px, transparent 12px) calc(100% - 18px) 18px / 42px 42px no-repeat, linear-gradient(90deg, var(--colour-white) 12px, transparent 12px) 18px calc(100% - 18px) / 42px 42px no-repeat, linear-gradient(0deg, var(--colour-white) 12px, transparent 12px) 18px calc(100% - 18px) / 42px 42px no-repeat, var(--colour-white);width:156px;box-shadow:inset 0 0 0 12px var(--colour-white);border-radius:18px;place-items:center;display:grid;position:relative}.qr-placeholder span{background:var(--colour-darkest);border-radius:4px;width:16px;height:16px;position:absolute}.qr-placeholder span:first-child{top:24px;left:74px}.qr-placeholder span:nth-child(2){top:74px;right:30px}.qr-placeholder span:nth-child(3){bottom:42px;left:36px}.qr-placeholder span:nth-child(4){bottom:28px;right:50px}.qr-placeholder strong{z-index:1;width:52px;height:52px;color:var(--colour-white);background:linear-gradient(135deg, var(--colour-logo-green), var(--colour-logo-green-2));font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);border-radius:16px;place-items:center;display:grid;position:relative}.feed-jump-rail{z-index:30;position:fixed;top:50%;right:clamp(18px,3vw,44px);transform:translateY(-50%)}.feed-avatar-button,.feed-action-button,.feed-jump-button{border:2px solid var(--colour-border-2);color:var(--colour-white);background:var(--surface-header);border-radius:999px;transition:background-color .16s,border-color .16s,box-shadow .16s,transform .16s}.feed-avatar-button{background:var(--colour-blue);width:48px;height:48px;font-size:var(--font-button-size);font-weight:var(--font-button-weight);line-height:var(--font-button-line);place-items:center;display:grid}.feed-avatar-button:hover{box-shadow:0 14px 28px color-mix(in srgb, var(--colour-blue) 26%, transparent);transform:translateY(-1px)}.feed-avatar-button:active{transform:scale(.96)}.feed-action-button{cursor:pointer;background:0 0;border:0;place-items:center;gap:5px;width:44px;min-height:auto;padding:0;display:grid}.feed-action-button>span:first-child{border:2px solid var(--colour-border-2);width:42px;height:42px;color:var(--colour-white);background:var(--surface-header);box-shadow:0 12px 22px color-mix(in srgb, var(--colour-darkest) 34%, transparent);border-radius:999px;place-items:center;transition:background-color .16s,border-color .16s,box-shadow .16s,transform .16s;display:grid}.feed-action-button:hover>span:first-child{border-color:var(--colour-blue);background:color-mix(in srgb, var(--colour-blue) 16%, var(--surface-header));box-shadow:0 14px 28px color-mix(in srgb, var(--colour-blue) 16%, transparent);transform:translateY(-1px)}.feed-action-button.is-active>span:first-child{border-color:var(--colour-blue);background:color-mix(in srgb, var(--colour-blue) 22%, var(--surface-header))}.feed-action-button:disabled{cursor:wait;opacity:.72}.feed-action-button:active>span:first-child{transform:scale(.95)}.feed-jump-button{cursor:pointer;place-items:center;width:clamp(48px,4vw,58px);height:clamp(48px,4vw,58px);transition:background-color .16s,border-color .16s,box-shadow .16s,transform .16s;display:grid}.feed-jump-button:hover{border-color:var(--colour-blue);background:color-mix(in srgb, var(--colour-blue) 16%, var(--surface-header));box-shadow:0 14px 28px color-mix(in srgb, var(--colour-blue) 16%, transparent);transform:translateY(-1px)}.feed-jump-button:active{transform:scale(.95)}.feed-action-button.is-idt{color:var(--colour-lime)}.feed-action-button.is-idt>span:first-child{border-color:color-mix(in srgb, var(--colour-white) 50%, transparent);width:44px;height:44px;color:var(--colour-white)}.feed-action-button.is-idt:hover>span:first-child{border-color:var(--colour-lime);background:color-mix(in srgb, var(--colour-lime) 16%, var(--surface-header));box-shadow:0 14px 28px color-mix(in srgb, var(--colour-lime) 18%, transparent)}.feed-action-button.is-idt.is-active>span:first-child{border-color:var(--colour-lime);background:color-mix(in srgb, var(--colour-lime) 22%, var(--surface-header))}.feed-action-button svg{display:block}.feed-action-button strong,.feed-action-button em{font-style:normal;font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line)}.feed-action-button em{display:none}.feed-action-button.is-idt strong{color:var(--colour-lime)}.feed-action-notice{max-width:92px;color:var(--colour-white-subtle);text-align:center;font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);margin:-4px 0 0}.feed-empty{max-width:620px}@media (max-width:1240px){.feed-card-shell{grid-template-columns:clamp(42px,4vw,58px) minmax(0,max-content) clamp(42px,4vw,58px);gap:clamp(8px,1.4vw,16px)}.lesson-feed-card{grid-column:2}.feed-action-rail{grid-column:3;gap:clamp(8px,1.2vw,12px)}.feed-avatar-button{width:clamp(40px,4vw,48px);height:clamp(40px,4vw,48px)}.feed-action-button{width:clamp(40px,4vw,46px)}.feed-action-button>span:first-child,.feed-action-button.is-idt>span:first-child{width:clamp(38px,3.8vw,44px);height:clamp(38px,3.8vw,44px)}.feed-action-button strong{font-size:var(--font-micro-size);line-height:var(--font-micro-line)}.feed-jump-rail{display:none}}.lesson-card{border:1px solid var(--colour-border);background:var(--surface-card);border-radius:18px;overflow:hidden}.lesson-card-media{aspect-ratio:16/10;background:var(--colour-dark-3);display:block;position:relative}.media-image{object-fit:cover}.media-fallback,.lesson-media-empty{width:100%;height:100%;color:var(--colour-muted);font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);place-items:center;display:grid}.lesson-card-body{padding:18px}.lesson-card h2{font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);margin:8px 0}.lesson-card p{color:var(--colour-white-subtle);margin:0}.lesson-meta{color:var(--colour-muted);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);flex-wrap:wrap;gap:12px;margin-top:14px;display:flex}.empty-state,.policy-section,.lesson-action-card{border:1px solid var(--colour-border);background:var(--surface-card-soft);border-radius:18px}.empty-state{padding:28px}.lesson-layout{grid-template-columns:minmax(0,1fr) minmax(280px,.42fr);align-items:center;gap:clamp(24px,4vw,48px);width:min(100%,1520px);display:grid}.lesson-detail-player{width:100%}.lesson-detail-media-shell{width:min(100%, min(calc((100vh - 190px) * var(--lesson-detail-aspect)), 980px));border:1px solid var(--colour-border);background:var(--colour-dark-2);min-width:min(100%,320px);aspect-ratio:var(--lesson-detail-aspect);border-radius:22px;margin-inline:auto;position:relative;overflow:hidden}.lesson-detail-media{position:absolute;inset:0}.lesson-detail-image{object-fit:contain}.lesson-detail-video{--controls-backdrop-color:transparent;width:100%;height:100%;display:block}.lesson-detail-mute{z-index:6;width:44px;height:44px;color:var(--colour-white);background:color-mix(in srgb, var(--colour-darkest) 28%, transparent);-webkit-backdrop-filter:blur(14px)saturate(140%);backdrop-filter:blur(14px)saturate(140%);cursor:pointer;border:0;border-radius:999px;place-items:center;transition:background-color .16s,transform .16s;display:grid;position:absolute;top:clamp(16px,2vw,28px);left:clamp(16px,2vw,28px)}.lesson-detail-mute:hover{background:color-mix(in srgb, var(--colour-white) 16%, transparent);transform:translateY(-1px)}.lesson-detail-mute:active{transform:scale(.94)}.lesson-detail-slide-controls{z-index:6;pointer-events:none;justify-content:space-between;align-items:center;padding:clamp(14px,2vw,28px);display:flex;position:absolute;inset:0}.lesson-detail-slide-controls button{border:1px solid color-mix(in srgb, var(--colour-white) 42%, transparent);width:46px;height:46px;color:var(--colour-white);background:color-mix(in srgb, var(--colour-darkest) 20%, transparent);-webkit-backdrop-filter:blur(14px)saturate(140%);backdrop-filter:blur(14px)saturate(140%);cursor:pointer;pointer-events:auto;border-radius:999px;place-items:center;transition:background-color .16s,border-color .16s,opacity .16s,transform .16s;display:grid}.lesson-detail-slide-controls button:hover{border-color:color-mix(in srgb, var(--colour-white) 70%, transparent);background:color-mix(in srgb, var(--colour-white) 14%, transparent);transform:translateY(-1px)}.lesson-detail-slide-controls button:disabled{cursor:default;opacity:.28}.lesson-detail-slide-controls button:active:not(:disabled){transform:scale(.94)}.lesson-detail-gradient{z-index:3;pointer-events:none;background:linear-gradient(180deg, transparent 0%, color-mix(in srgb, var(--colour-darkest) 10%, transparent) 20%, color-mix(in srgb, var(--colour-darkest) 36%, transparent) 48%, color-mix(in srgb, var(--colour-darkest) 78%, transparent) 100%);height:48%;position:absolute;inset:auto 0 0}.lesson-detail-copy{z-index:4;gap:10px;padding:clamp(18px,3vw,32px);display:grid;position:absolute;inset:auto 0 0}.lesson-detail-copy-panel{gap:8px;width:min(100%,760px);display:grid}.lesson-detail-copy-panel h1{color:var(--colour-white);font-size:clamp(var(--font-headline-size), 2.2vw, var(--font-title-size));font-weight:var(--font-title-weight);line-height:var(--font-title-line);text-shadow:0 2px 10px color-mix(in srgb, var(--colour-darkest) 80%, transparent);margin:0}.lesson-detail-summary{width:100%;color:var(--colour-white-subtle);text-align:left;cursor:pointer;font-size:var(--font-body-size);font-weight:var(--font-body-weight);line-height:var(--font-body-line);text-shadow:0 2px 8px color-mix(in srgb, var(--colour-darkest) 72%, transparent);background:0 0;border:0;padding:0}.lesson-detail-summary span{color:var(--colour-blue)}.lesson-detail-step{width:min(100%,760px)}.lesson-action-card{margin-top:18px;padding:20px}.lesson-action-card h2,.policy-section h2{font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);margin:0 0 8px}.lesson-action-card p,.policy-section p{color:var(--colour-white-subtle);margin:0}.lesson-sidebar{position:sticky;top:104px}.lesson-stat-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin-top:22px;display:grid}.lesson-ai-disclosure{flex-wrap:wrap;gap:8px;margin-top:16px;display:flex}.lesson-ai-disclosure span{border:1px solid var(--colour-border-2);min-height:28px;color:var(--colour-white);background:var(--surface-soft);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);border-radius:999px;align-items:center;padding:0 10px;display:inline-flex}.lesson-stat{border:1px solid var(--colour-border);background:var(--surface-soft);border-radius:14px;padding:14px}.lesson-stat strong{font-size:var(--font-headline-size);font-weight:var(--font-headline-weight);line-height:var(--font-headline-line);display:block}.lesson-stat span{color:var(--colour-muted);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line)}.proof-page{gap:24px;width:min(960px,100%);margin:0 auto;display:grid}.proof-hero{max-width:760px}.proof-hero h1{font-size:clamp(var(--font-display-size), 5vw, var(--font-brand-size));font-weight:var(--font-brand-weight);line-height:var(--font-brand-line);margin:14px 0}.proof-hero p{color:var(--colour-white-subtle);font-size:var(--font-body-size);font-weight:var(--font-body-weight);line-height:var(--font-body-line);margin:0}.proof-actions{flex-wrap:wrap;gap:12px;margin-top:22px;display:flex}.proof-card{border:1px solid var(--colour-border);background:linear-gradient(135deg, color-mix(in srgb, var(--colour-lime) 8%, transparent), transparent 38%), var(--surface-card-soft);border-radius:20px;overflow:hidden}.proof-media-frame{background:var(--colour-dark-2);min-height:min(64vw,520px);position:relative}.proof-media-frame img{object-fit:cover}.proof-card video{background:var(--colour-dark-2);width:100%;max-height:560px;display:block}.proof-body{color:var(--colour-white);font-size:var(--font-title-size);font-weight:var(--font-body-weight);line-height:var(--font-title-line);margin:0;padding:24px}.proof-action-step{border:1px solid color-mix(in srgb, var(--colour-lime) 24%, transparent);background:color-mix(in srgb, var(--colour-lime) 7%, transparent);border-radius:14px;gap:6px;margin:0 24px 24px;padding:14px;display:grid}.proof-action-step span{color:var(--colour-lime);font-size:var(--font-micro-size);font-weight:var(--font-micro-weight);line-height:var(--font-micro-line);text-transform:uppercase}.proof-action-step strong{color:var(--colour-white);font-size:var(--font-body-size);font-weight:var(--font-subhead-weight);line-height:var(--font-body-line)}.proof-disclosures{flex-wrap:wrap;gap:8px;padding:0 24px 24px;display:flex}.proof-disclosures span{border:1px solid var(--colour-border-2);color:var(--colour-muted);background:var(--surface-soft);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);border-radius:999px;padding:6px 10px}.collection-page{gap:32px;display:grid}.certificate-page{gap:22px;width:min(860px,100%);margin:0 auto;display:grid}.track-page{gap:28px;display:grid}.playlist-page{gap:26px;width:min(860px,100%);margin:0 auto;display:grid}.playlist-hero{max-width:740px}.playlist-hero h1{font-size:clamp(var(--font-display-size), 5vw, var(--font-brand-size));font-weight:var(--font-brand-weight);line-height:var(--font-brand-line);margin:14px 0 16px}.playlist-hero p{color:var(--colour-white-subtle);font-size:var(--font-subhead-size);font-weight:var(--font-subhead-weight);line-height:var(--font-subhead-line);margin:0}.playlist-meta-row{flex-wrap:wrap;gap:10px;margin-top:22px;display:flex}.playlist-meta-row span{border:1px solid var(--colour-border);min-height:30px;color:var(--colour-white-subtle);background:var(--surface-soft);font-size:var(--font-caption-size);font-weight:var(--font-caption-weight);line-height:var(--font-caption-line);border-radius:999px;align-items:center;padding:0 11px;display:inline-flex}.playlist-list{gap:12px;display:grid}.playlist-card{border:1px solid var(--colour-border);background:var(--surface-card-soft);border-radius:16px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:14px;transition:border-color .16s,transform .16s;display:grid}.playlist-card:hover{border-color:color-mix(in srgb, var(--colour-blue) 50%, var(--colour-border));transform:translateY(-1px)}.playlist-card:active{transform:scale(.99)}.playlist-card.is-static:hover{border-color:var(--colour-border);transform:none}.playlist-index{width:34px;height:34px;color:var(--colour-blue);background:color-mix(in srgb, var(--colour-blue) 12%, transparent);font-size:var(--font-label-size);font-weight:var(--font-label-weight);line-height:var(--font-label-line);border-radius:999px;place-items:center;display:grid}.playlist-copy{gap:4px;min-width:0;display:grid}.playlist-copy strong{color:var(--colour-white);font-size:var(--font-subhead-size);font-weight:var(--font-subhead-weight);line-height:var(--font-subhead-line)}.playlist-copy span{color:var(--colour-white-subtle);font-size:var(--font-body-size);font-weight:var(--font-body-weight);line-height:var(--font-body-line)}.playlist-type{border:1px solid 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