:root{--s-bg:#101412;--s-panel:#191e1b;--s-soft:#202823;--s-text:#f2f5ed;--s-muted:#abb9ad;--s-line:#303b32;--s-lime:#d7ec8c;--s-mint:#aedac4;color-scheme:dark}
:root[data-theme=light]{--s-bg:#f5f6ef;--s-panel:#fff;--s-soft:#eaf0e5;--s-text:#163b38;--s-muted:#52685f;--s-line:#d5dfd2;--s-lime:#d7ec8c;--s-mint:#176d58;color-scheme:light}
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@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}.reveal{opacity:1;transform:none}}

/* Product motion: a finite illustrated tour, with visible playback controls. */
[hidden]{display:none!important}.hero-visual.tour-shell{padding:17px;border-radius:25px;background:var(--s-soft);box-shadow:0 24px 70px #0002;isolation:isolate}.tour-label{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:2px 4px 15px}.tour-duration{font-size:9px;color:var(--s-muted)}.tour-window{background:var(--s-bg);border:1px solid var(--s-line);border-radius:16px;overflow:hidden}.tour-window-bar{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:11px 14px;border-bottom:1px solid var(--s-line);font-size:9px;color:var(--s-muted)}.window-dots{display:flex;gap:4px}.window-dots i{width:4px;height:4px;background:var(--s-line);border-radius:50%}.tour-brand{display:flex;align-items:center;gap:8px;padding:18px 21px 0;font-size:14px;letter-spacing:-.035em}.tour-brand img{border-radius:7px}.tour-brand>span{margin-left:auto;font-size:8px;color:var(--s-muted);letter-spacing:.02em}.tour-stage{padding:23px 21px 16px;min-height:350px;position:relative}.tour-scene{animation:tour-enter .45s ease both}.tour-kicker{font-size:8px;letter-spacing:.12em;color:var(--s-mint);margin-bottom:11px}.tour-scene h2{font-size:26px;letter-spacing:-.045em;line-height:1.16;max-width:300px}.tour-description{font-size:11px;color:var(--s-muted);margin:9px 0 19px}.tour-task{display:flex;align-items:center;gap:10px;padding:12px 11px;border:1px solid var(--s-line);border-radius:10px;margin-bottom:9px;background:var(--s-panel);transition:border-color .2s}.tour-task.current{border-color:var(--s-mint);background:var(--s-soft)}.tour-task-number{font-size:9px;color:var(--s-mint);padding:5px;background:var(--s-bg);border-radius:5px}.tour-task b{font-size:11px;font-weight:550;display:block;line-height:1.45}.tour-task small{font-size:9px;color:var(--s-muted);display:block;margin-top:2px}.tour-task-status{font-size:8px;margin-left:auto;flex-shrink:0;color:var(--s-mint)}.tour-annotation{display:flex;gap:9px;align-items:center;margin-top:17px;font-size:9px;color:var(--s-muted)}.tour-annotation>span{font-size:15px;color:var(--s-mint)}.tour-example{padding:15px;background:var(--s-panel);border:1px solid var(--s-line);border-radius:11px;margin-top:17px}.tour-example>span,.tour-repair>span{font-size:8px;letter-spacing:.1em;color:var(--s-mint)}.tour-example p{font-size:12px;line-height:1.7;margin-top:8px}.tour-question{margin:18px 0 12px;font-size:11px}.tour-example-answers{display:grid;grid-template-columns:1fr 1fr 1.5fr;gap:6px}.tour-example-answers>span{border:1px solid var(--s-line);padding:8px 5px;border-radius:7px;font-size:9px;text-align:center;color:var(--s-muted)}.tour-example-answers>span.example-selected{border-color:var(--s-mint);background:var(--s-soft);color:var(--s-text)}.example-selected b{color:var(--s-mint);font-size:9px;margin-left:4px}.tour-fake-button{display:flex;justify-content:space-between;align-items:center;background:var(--s-lime);color:#17291c;border-radius:8px;padding:11px 13px;margin-top:17px;font-size:10px;font-weight:600;pointer-events:none}.tour-explanation{padding:18px;border:1px solid var(--s-mint);background:var(--s-soft);border-radius:12px;margin-top:21px;position:relative}.tour-check{width:23px;height:23px;display:inline-grid;place-items:center;border:1px solid var(--s-mint);border-radius:50%;color:var(--s-mint);font-size:11px;margin-right:8px;animation:tour-check .5s ease both}.tour-explanation>b{font-size:13px;color:var(--s-mint)}.tour-explanation p{font-size:12px;margin-top:12px;color:var(--s-text)}.tour-learning{border-top:1px solid var(--s-line);padding-top:12px;margin-top:14px;display:block;font-size:10px;color:var(--s-mint)}.tour-repair{margin-top:19px}.tour-repair p{font-size:11px;color:var(--s-muted);margin-top:5px}.tour-path{display:flex;justify-content:space-between;gap:8px;margin-top:22px;font-size:9px;color:var(--s-muted)}.tour-path .complete{color:var(--s-mint)}.tour-example h3{font-size:20px;margin-top:8px}.tour-save{display:flex;align-items:center;gap:10px;margin-top:18px;border-top:1px solid var(--s-line);padding-top:17px}.tour-save>span{font-size:16px;color:var(--s-mint)}.tour-save b{font-size:10px;font-weight:500;display:block}.tour-save small{font-size:9px;color:var(--s-muted);display:block}.tour-segments{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:0 20px 17px}.tour-segments button{border:0;background:none;color:var(--s-muted);font-size:8px;padding:10px 0 0;position:relative;min-height:33px;letter-spacing:.01em;border-radius:0;text-align:left}.tour-segments button>span{position:absolute;top:0;left:0;right:0;height:2px;background:var(--s-line);border-radius:2px}.tour-segments button.active{color:var(--s-mint)}.tour-segments button.active:before{content:'';position:absolute;top:0;left:0;height:2px;width:0;background:var(--s-mint);z-index:1;animation:tour-fill 4s linear both;animation-play-state:paused}.tour-running .tour-segments button.active:before{animation-play-state:running}.tour-control-bar{display:flex;align-items:center;gap:15px;margin:15px 4px 0}.tour-control-bar button{border:0;min-height:35px;padding:0 5px;background:none;color:var(--s-text);font-size:11px;font-weight:500;white-space:nowrap;border-radius:5px}.tour-control-bar>span{font-size:8px;color:var(--s-muted);margin-left:auto}.tour-caption{font-size:11px;color:var(--s-text);margin:4px 9px 0;min-height:35px;line-height:1.55}.tour-disclaimer{font-size:8px;color:var(--s-muted);margin:5px 9px;line-height:1.6}.hero .hero-visual{animation:entrance .7s ease both}.feature{transition:border-color .25s,transform .25s}.feature:hover{border-color:var(--s-mint);transform:translateY(-3px)}.skill-switcher button{transition:background .2s,color .2s,transform .2s}.day-picker button{transition:background .2s,color .2s,transform .2s}.day-picker button:hover{transform:translateY(-2px)}
/* A complete, short practice loop: attempt, evidence, explanation, review. */
.mini-test-shell{border:1px solid var(--s-line);border-radius:24px;overflow:hidden;background:var(--s-panel)}.mini-test-bar{display:flex;gap:14px;align-items:center;justify-content:space-between;padding:19px 29px;border-bottom:1px solid var(--s-line)}.mini-time{font-size:10px;color:var(--s-muted);white-space:nowrap}.mini-progress-row{display:flex;gap:22px;align-items:center;padding:18px 29px;font-size:11px;color:var(--s-muted)}.mini-progress-row>span:first-child{color:var(--s-mint);font-weight:600}.mini-progress-row>span{white-space:nowrap}.mini-meter{height:4px;border-radius:10px;background:var(--s-soft);flex:1;overflow:hidden}.mini-meter i{display:block;width:0;height:100%;background:var(--s-mint);transition:width .35s ease}.practice-demo.mini-test{border:0;border-top:1px solid var(--s-line);border-radius:0;align-items:stretch}.mini-test .demo-passage{padding:34px}.mini-test .demo-passage>p{font-size:17px;line-height:1.95}.mini-test mark{color:var(--s-text);background:#aedac422;box-shadow:0 1px 0 var(--s-mint);padding:2px 0;border-radius:2px}.mini-passage-note{display:flex;gap:11px;margin-top:30px;color:var(--s-mint);font-size:12px;line-height:1.7}.mini-passage-note>span{font-size:18px}.mini-passage-note p{max-width:320px}.mini-habits{display:flex;gap:10px;flex-wrap:wrap;margin-top:25px}.mini-habits span{font-size:9px;text-transform:uppercase;letter-spacing:.08em;border:1px solid var(--s-line);border-radius:30px;padding:5px 9px;color:var(--s-muted)}.mini-question-area{padding:32px 34px}.mini-question-area fieldset{border:0;padding:0;margin:19px 0 0;min-width:0}.mini-question-area legend{font-size:20px;line-height:1.55;font-weight:500;letter-spacing:-.015em;padding:0}.mini-question-area legend:focus,.mini-summary h3:focus{outline:none}.mini-question-area fieldset>.fine-print{margin-top:12px}.mini-options{display:grid;gap:9px;margin-top:23px}.mini-option{display:flex;align-items:center;gap:11px;padding:14px 15px;border:1px solid var(--s-line);border-radius:10px;cursor:pointer;font-size:14px;transition:border-color .2s,background .2s}.mini-option:has(input:checked){border-color:var(--s-mint);background:var(--s-soft)}.mini-option input{width:16px;height:16px;accent-color:var(--s-mint);margin:0;flex-shrink:0}.mini-option small{margin-left:auto;font-size:9px;color:var(--s-muted)}.mini-option.answer-correct{border-color:var(--s-mint);background:var(--s-soft)}.mini-option.answer-wrong{border-color:#b89769}.mini-option input:disabled{opacity:1}.mini-option:has(input:disabled){cursor:default}.mini-action-row{margin-top:21px}.mini-action-row .button{width:100%}.mini-feedback{background:var(--s-soft);border:1px solid var(--s-line);border-radius:12px;padding:20px;margin-top:22px;animation:tour-enter .3s ease both}.mini-feedback strong{font-size:14px;color:var(--s-mint);font-weight:600;display:block}.mini-feedback p{font-size:13px;color:var(--s-muted);margin-top:10px;line-height:1.8}.mini-takeaway{font-size:11px;color:var(--s-text);border-top:1px solid var(--s-line);padding-top:13px;margin-top:16px}.mini-boundary{margin-top:23px;font-size:10px}.mini-summary{animation:tour-enter .4s ease both}.mini-score{display:flex;align-items:center;gap:17px;margin:21px 0}.mini-score strong{font-size:51px;font-weight:550;letter-spacing:-.06em;color:var(--s-mint);line-height:1}.mini-score>span{font-size:10px;color:var(--s-muted);max-width:95px}.mini-summary h3{font-size:27px;line-height:1.15}.mini-summary>p{color:var(--s-muted);font-size:12px;line-height:1.8;margin:15px 0}.mini-summary ul{list-style:none;padding:0;margin:24px 0}.mini-summary li{position:relative;padding-left:28px;margin:20px 0}.review-symbol{position:absolute;left:0;top:0;color:var(--s-mint);font-size:14px}.mini-summary li strong{font-size:12px;font-weight:550}.mini-summary li p{font-size:11px;color:var(--s-muted);margin-top:5px}.mini-end-actions{display:flex;gap:12px;flex-direction:column;align-items:flex-start;margin-top:24px}.mini-end-actions .button{font-size:12px;gap:12px}.mini-end-actions .text-button{font-size:11px}
@keyframes tour-enter{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes tour-check{from{opacity:0;transform:scale(.85)}to{opacity:1;transform:scale(1)}}@keyframes tour-fill{from{width:0}to{width:100%}}
@media(max-width:1050px){.tour-stage{min-height:375px}.tour-scene h2{font-size:24px}.tour-task{padding:11px 8px;gap:7px}.tour-task small{font-size:8px}.tour-task-status{font-size:7px}.tour-label{align-items:flex-start;gap:7px}.tour-duration{max-width:70px;text-align:right;line-height:1.5}.mini-question-area,.mini-test .demo-passage{padding:27px}}
@media(max-width:700px){.hero{align-items:start}.hero-visual.tour-shell{padding:14px}.tour-label{padding-bottom:12px}.tour-duration{max-width:none}.tour-stage{padding:22px 18px 14px;min-height:350px}.tour-brand{padding:17px 18px 0}.tour-scene h2{font-size:25px}.tour-task{padding:12px 9px;gap:9px}.tour-task small{font-size:9px}.tour-task-status{font-size:8px}.tour-control-bar{gap:12px}.tour-control-bar button{min-height:40px}.tour-caption{min-height:34px;font-size:11px}.tour-disclaimer{font-size:9px}.tour-window-bar{font-size:8px}.mini-test-bar{padding:17px 20px}.mini-test-bar .mini-label{font-size:8px;max-width:210px}.mini-time{font-size:9px}.mini-progress-row{padding:15px 20px;gap:10px;font-size:10px}.mini-question-area,.mini-test .demo-passage{padding:25px}.mini-test .demo-passage>p{font-size:16px}.mini-question-area legend{font-size:18px}.mini-option{font-size:13px;min-height:49px}.mini-feedback{padding:17px}.mini-feedback p{font-size:12px}.mini-habits{margin-top:20px}.mini-passage-note{font-size:11px;margin-top:23px}.mini-summary h3{font-size:27px}.mini-score strong{font-size:49px}.mini-end-actions .button{width:100%}}
@media(max-width:360px){.tour-brand>span{display:none}.tour-task-status{font-size:7px}.tour-task b{font-size:10px}.tour-task small{font-size:8px}.tour-control-bar>span{display:none}.mini-progress-row>span:last-child{display:none}}
@media(prefers-reduced-motion:reduce){.tour-scene,.mini-feedback,.mini-summary,.tour-check{animation:none!important}.tour-segments button.active:before{width:100%}.feature:hover,.day-picker button:hover{transform:none}.mini-meter i{transition:none}}

/* Smooth overlapping scenes hold the frame steady across the loop. */
.hero-visual.tour-shell{background:linear-gradient(145deg,var(--s-soft),var(--s-panel));padding:19px;box-shadow:0 28px 80px #0002,inset 0 1px 0 #ffffff08;border-radius:27px}.tour-window{border-radius:18px;box-shadow:0 8px 24px #0001}.tour-window-bar{padding:12px 16px;background:var(--s-panel)}.tour-brand{padding-top:21px}.tour-brand strong{font-size:15px}.tour-stage{height:378px;min-height:378px;overflow:hidden}.tour-scene{position:absolute;inset:23px 21px 16px;opacity:0;visibility:hidden;transform:translateY(10px) scale(.992);animation:none;transition:opacity .65s ease,transform .8s cubic-bezier(.2,.7,.2,1),visibility .65s;pointer-events:none}.tour-scene.is-active{opacity:1;visibility:visible;transform:translateY(0) scale(1);z-index:1;pointer-events:auto}.tour-scene h2{font-size:27px;font-weight:620;line-height:1.13}.tour-task{padding:13px 12px;border-radius:12px}.tour-task.current{box-shadow:0 0 0 3px #aedac409}.tour-task-number{border-radius:6px;width:25px;text-align:center}.tour-example{border-radius:13px;padding:17px}.tour-explanation{border-radius:14px;padding:21px}.tour-fake-button{border-radius:10px;padding:12px 14px}.tour-segments{gap:10px;padding-bottom:19px}.tour-segments button>span,.tour-segments button.active:before{height:3px;border-radius:5px}.tour-segments button.active:before{animation-duration:4.5s}.tour-control-bar{border-top:1px solid var(--s-line);padding-top:10px;margin-top:14px}.tour-control-bar #tourPlay{background:var(--s-panel);border:1px solid var(--s-line);border-radius:8px;padding:0 11px;min-height:36px}.tour-caption{font-size:12px;min-height:38px;padding-top:6px}.tour-disclaimer{margin-top:5px}.tour-check{animation:none}
@media(max-width:1050px){.tour-stage{height:405px;min-height:405px}.tour-scene h2{font-size:25px}.tour-task{padding:12px 9px}.tour-example{padding:15px}}
@media(max-width:700px){.hero-visual.tour-shell{padding:15px;border-radius:24px}.tour-stage{height:385px;min-height:385px}.tour-scene{inset:22px 18px 14px}.tour-scene h2{font-size:27px}.tour-control-bar #tourPlay{min-height:42px}.tour-brand{padding-top:19px}.tour-caption{font-size:11px}.tour-duration{font-size:9px}.tour-task{padding:13px 10px}.tour-control-bar>span{font-size:8px}}
@media(max-width:360px){.tour-stage{height:405px;min-height:405px}.tour-scene h2{font-size:24px}}
@media(prefers-reduced-motion:reduce){.tour-scene{transition:none!important;transform:none}.tour-segments button.active:before{width:100%}}

/* A playful, readable course map and short skill discoveries. */
.explorer-toolbar{margin:30px 0 18px}.chapter-picker{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.chapter-picker button{background:var(--s-panel);border:1px solid var(--s-line);color:var(--s-text);border-radius:14px;text-align:left;padding:18px 20px;min-height:78px;font-size:13px;transition:background .2s,border-color .2s,transform .2s}.chapter-picker button small{display:block;color:var(--s-muted);font-size:11px;margin-top:8px}.chapter-picker button.active{border-color:var(--s-mint);background:var(--s-soft)}.chapter-picker button:hover{transform:translateY(-2px)}.explorer-status{display:flex;justify-content:space-between;align-items:center;gap:14px;margin:18px 3px;color:var(--s-muted);font-size:12px}#surpriseDay{color:var(--s-mint);border:1px solid var(--s-line);background:var(--s-panel);padding:10px 16px;min-height:44px;border-radius:24px;font-size:12px;transition:transform .2s}#surpriseDay:hover{transform:rotate(-2deg)}.course-map .day-picker{grid-template-columns:repeat(7,minmax(0,1fr));gap:10px}.course-map .day-picker button{position:relative;display:flex;flex-direction:column;align-items:flex-start;padding:15px 13px;min-height:86px;gap:8px;transition:transform .25s,background .25s,border-color .25s}.course-map .day-picker button b{font-size:24px;line-height:1;font-weight:550}.course-map .day-picker button span{font-size:10px}.course-map .day-picker button i{position:absolute;right:9px;top:10px;width:5px;height:5px;border-radius:50%;background:var(--s-line)}.course-map .day-picker button.previewed i{background:var(--s-mint);box-shadow:0 0 0 3px var(--s-soft)}.course-map .day-picker button.selected i{background:#17291c;box-shadow:none}.course-map .day-picker button:hover{transform:translateY(-3px)}.course-map .day-detail{min-height:0;padding-top:25px}.course-map .day-content{padding-top:12px}.day-peek{margin-top:26px;border-top:1px solid var(--s-line);padding-top:24px}.day-peek ul{list-style:none;padding:0;margin:15px 0;display:grid;gap:12px}.day-peek li{position:relative;padding-left:25px;font-size:13px;line-height:1.8;color:var(--s-text)}.day-peek li:before{content:'↗';position:absolute;left:0;color:var(--s-mint)}.day-edge{margin-top:20px;padding:20px 23px;border:1px solid var(--s-line);border-radius:14px;background:var(--s-soft)}.day-edge>span{font-size:9px;letter-spacing:.15em;color:var(--s-mint)}.day-content .day-edge p{max-width:none;font-size:12px;line-height:1.85;margin-top:10px}.explorer-message{font-size:12px;line-height:1.8;color:var(--s-mint);margin:17px 5px;min-height:24px}.skill-challenge{margin-top:20px;padding:32px 40px;border:1px solid var(--s-line);border-radius:20px;background:var(--s-panel)}.skill-challenge h3{font-size:24px;margin:0 0 16px}.challenge-label{display:block;color:var(--s-mint);font-size:10px;letter-spacing:.05em;margin-bottom:13px}#challengeContext{font-size:14px;color:var(--s-muted);line-height:1.85;max-width:780px}#challengeQuestion{font-size:17px;line-height:1.6;margin:21px 0 15px;max-width:820px}#challengeOptions{display:flex;flex-wrap:wrap;gap:10px}#challengeOptions button{flex:1;min-width:140px;padding:15px 18px;min-height:48px;border:1px solid var(--s-line);border-radius:12px;background:var(--s-soft);color:var(--s-text);text-align:left;font-size:13px;line-height:1.6;transition:border-color .2s,transform .2s}#challengeOptions button:hover:not(:disabled){border-color:var(--s-mint);transform:translateY(-2px)}#challengeOptions button:disabled{opacity:1;cursor:default}#challengeOptions button.challenge-correct{border-color:var(--s-mint)}#challengeOptions button.challenge-selected:before{content:'Your choice · ';font-size:10px;display:block;color:var(--s-muted)}#challengeFeedback{margin-top:20px;padding:20px;border-radius:12px;background:var(--s-soft);animation:discovery-enter .35s ease both}#challengeFeedback strong{font-size:14px;color:var(--s-mint)}#challengeFeedback p{font-size:13px;color:var(--s-muted);line-height:1.85;margin-top:8px}.challenge-footer{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin-top:24px}.challenge-footer .text-button{min-height:44px;color:var(--s-mint);font-size:12px}.skill-challenge>.fine-print{margin-top:15px}.day-peek,.day-edge{animation:discovery-enter .35s ease both}@keyframes discovery-enter{from{opacity:0;transform:translateY(7px)}to{opacity:1;transform:translateY(0)}}
/* Animated demonstration cursor: no interaction is required from the visitor. */
.tour-cursor{position:absolute;left:12%;top:15%;z-index:5;pointer-events:none;filter:drop-shadow(0 2px 3px #0005);opacity:0}.tour-cursor svg{position:relative;z-index:2}.tour-cursor i{position:absolute;left:-10px;top:-10px;width:26px;height:26px;border:2px solid var(--s-lime);border-radius:50%;opacity:0}.tour-cursor>span{position:absolute;left:25px;top:25px;border-radius:5px;padding:4px 7px;background:#101412;color:#d9ff8b;font-size:9px;white-space:nowrap;opacity:0}.is-active .tour-cursor{animation:guide-cursor 4.5s ease both;animation-play-state:paused}.is-active .tour-cursor i{animation:guide-click 4.5s ease both;animation-play-state:paused}.is-active .tour-cursor>span{animation:guide-label 4.5s ease both;animation-play-state:paused}.tour-running .is-active .tour-cursor,.tour-running .is-active .tour-cursor i,.tour-running .is-active .tour-cursor>span{animation-play-state:running}.tour-scene[data-tour-scene="0"]{--pointer-x:83%;--pointer-y:55%;--pointer-end-x:83%;--pointer-end-y:55%}.tour-scene[data-tour-scene="1"]{--pointer-x:80%;--pointer-y:63%;--pointer-end-x:74%;--pointer-end-y:79%}.tour-scene[data-tour-scene="2"]{--pointer-x:22%;--pointer-y:42%;--pointer-end-x:62%;--pointer-end-y:72%}.tour-scene[data-tour-scene="3"]{--pointer-x:70%;--pointer-y:63%;--pointer-end-x:70%;--pointer-end-y:63%}@keyframes guide-cursor{0%,8%{left:12%;top:15%;opacity:0}17%{opacity:1}42%,57%{left:var(--pointer-x);top:var(--pointer-y);opacity:1}74%,94%{left:var(--pointer-end-x);top:var(--pointer-end-y);opacity:1}100%{left:var(--pointer-end-x);top:var(--pointer-end-y);opacity:0}}@keyframes guide-click{0%,44%,62%,77%,94%,100%{opacity:0;transform:scale(.5)}48%,81%{opacity:.85;transform:scale(.65)}58%,91%{opacity:0;transform:scale(1.6)}}@keyframes guide-label{0%,43%,96%,100%{opacity:0}48%,91%{opacity:1}}
@media(max-width:700px){.chapter-picker{gap:7px}.chapter-picker button{padding:13px 10px;font-size:11px;line-height:1.6}.chapter-picker button small{font-size:9px;margin-top:5px}.course-map .day-picker{grid-template-columns:repeat(4,minmax(0,1fr));gap:7px}.course-map .day-picker button{padding:13px 9px;min-height:78px}.course-map .day-picker button b{font-size:22px}.course-map .day-picker button span{font-size:9px}.course-map .day-detail{padding-top:24px}.day-edge{padding:18px}.day-peek li{font-size:12px}.skill-challenge{padding:26px 22px}.skill-challenge h3{font-size:23px}#challengeOptions{flex-direction:column}#challengeOptions button{width:100%;min-width:0}#challengeQuestion{font-size:16px}.challenge-footer{gap:6px 16px}.explorer-status{font-size:10px}#surpriseDay{font-size:11px;padding:9px 13px}}
@media(max-width:360px){.chapter-picker{grid-template-columns:1fr}.chapter-picker button{min-height:48px;display:flex;justify-content:space-between;align-items:center;gap:10px}.chapter-picker button small{margin:0;white-space:nowrap}.course-map .day-picker{grid-template-columns:repeat(3,minmax(0,1fr))}.explorer-status{align-items:flex-start}}
@media(prefers-reduced-motion:reduce){.tour-cursor{display:none}.day-peek,.day-edge,#challengeFeedback{animation:none}.chapter-picker button,.course-map .day-picker button,#surpriseDay,#challengeOptions button{transition:none;transform:none!important}}

/* Keep hidden controls hidden even when a component supplies its own display rule. */
[hidden]{display:none!important}
/* Quiet polish: clear controls, consistent touch targets and readable mobile spacing. */
button,a,input,summary{-webkit-tap-highlight-color:transparent}button,input,a,summary{touch-action:manipulation}input{accent-color:var(--s-mint)}.feature,.skill-panel,.course-map,.skill-challenge,.price-card{box-shadow:0 9px 32px #00000008}.feature{transition:border-color .25s,box-shadow .25s}.feature:hover{border-color:var(--s-mint);box-shadow:0 14px 36px #00000013}.hero-copy{animation:discovery-enter .6s ease both}.hero-copy h1 em{background:linear-gradient(115deg,var(--s-mint),var(--s-lime));background-clip:text;-webkit-background-clip:text;color:transparent}.chapter-picker button{display:flex;gap:12px;align-items:flex-start}.chapter-picker button>span{display:block}.day-detail-footer .text-button{min-height:44px;padding:8px 0}.preview-preferences{display:flex;gap:13px;align-items:center;flex-wrap:wrap;margin:12px 0 8px;border-top:1px solid var(--s-line);padding-top:9px}.preview-preferences button{background:var(--s-panel);color:var(--s-mint);border:1px solid var(--s-line);border-radius:8px;min-height:40px;padding:7px 10px;font-size:10px}.preview-preferences button[aria-pressed=true]{background:var(--s-soft)}.preview-preferences button:disabled{opacity:1;cursor:default}.preview-preferences>span{color:var(--s-muted);font-size:9px;max-width:240px;line-height:1.6}.explore-tools{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;margin:19px 5px 8px}.remember-preview{display:flex;align-items:center;gap:10px;font-size:12px;color:var(--s-muted);min-height:44px;cursor:pointer}.remember-preview input{width:18px;height:18px;flex-shrink:0;margin:0}.share-day{font-size:12px;border:1px solid var(--s-line);background:var(--s-panel);color:var(--s-mint);border-radius:24px;min-height:44px;padding:9px 17px}.share-day:hover{border-color:var(--s-mint)}.share-fallback{margin:12px 5px}.share-fallback label{display:block;font-size:12px;color:var(--s-muted);margin-bottom:8px}.share-fallback input{width:100%;min-width:0;background:var(--s-panel);border:1px solid var(--s-line);color:var(--s-text);border-radius:10px;padding:13px;font-size:16px}#previewStorageNote{margin:3px 5px 12px}.faq-search{margin-bottom:20px;padding:21px;background:var(--s-panel);border:1px solid var(--s-line);border-radius:15px}.faq-search label{font-size:12px;font-weight:600;color:var(--s-text);display:block;margin-bottom:10px}.faq-search>div{display:flex;align-items:center;gap:12px}.faq-search input{width:100%;min-width:0;border:1px solid var(--s-line);background:var(--s-bg);color:var(--s-text);border-radius:10px;padding:13px 14px;font-size:16px}.faq-search input::placeholder{color:var(--s-muted);font-size:13px}.faq-search button{border:0;background:none;color:var(--s-mint);font-size:12px;min-height:44px;padding:0 5px}.faq-search p{font-size:11px;margin-top:11px;color:var(--s-muted);line-height:1.7}.back-to-top{position:fixed;right:23px;bottom:23px;z-index:25;display:flex;gap:7px;align-items:center;justify-content:center;background:var(--s-panel);border:1px solid var(--s-line);border-radius:25px;min-height:44px;padding:10px 16px;color:var(--s-mint);font-size:12px;box-shadow:0 5px 25px #0002}.day-content[data-transition="1"],.skill-panel[data-transition="1"]{animation:content-shift-a .28s ease both}.day-content[data-transition="0"],.skill-panel[data-transition="0"]{animation:content-shift-b .28s ease both}@keyframes content-shift-a{from{opacity:.35;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}@keyframes content-shift-b{from{opacity:.35;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:700px){.back-to-top{bottom:calc(94px + env(safe-area-inset-bottom));right:14px;padding:9px 13px}.chapter-picker button{gap:7px;font-size:10px}.explore-tools{gap:7px;align-items:flex-start}.remember-preview{font-size:11px}.preview-preferences>span{max-width:190px}.faq-search{padding:17px}.day-detail-footer{gap:14px;flex-wrap:wrap}.course-map .day-content{min-width:0}.topbar .icon-button{min-height:44px;width:44px}.hero-copy{animation:none}}
@media(max-width:360px){.topbar{padding:0 12px;gap:7px}.topbar .brand{font-size:17px}.topbar .nav-actions{gap:8px}.login-link{font-size:11px}.chapter-picker button{align-items:center}.chapter-picker button>span{display:flex;justify-content:space-between;gap:10px;flex:1}.chapter-picker button small{font-size:9px}.explore-tools{flex-direction:column}.preview-preferences>span{max-width:155px}.course-map .day-content h3{font-size:27px}}
:root[data-motion=reduce]{scroll-behavior:auto}:root[data-motion=reduce] *, :root[data-motion=reduce] *:before,:root[data-motion=reduce] *:after{animation:none!important;transition:none!important}:root[data-motion=reduce] .tour-cursor{display:none}:root[data-motion=reduce] .reveal{opacity:1;transform:none}:root[data-motion=reduce] .tour-scene{transform:none}:root[data-motion=reduce] .tour-segments button.active:before{width:100%}
@media(prefers-reduced-motion:reduce){.hero-copy,.day-content,.skill-panel{animation:none!important}.feature{transition:none}}

:root[data-theme=light] .hero-copy h1 em{background:none;color:var(--s-mint);-webkit-text-fill-color:var(--s-mint)}
.reviews-toolbar{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:20px}.reviews-toolbar .button{font-size:13px}.reviews-toolbar #reviewsAggregate{display:flex;align-items:center;gap:18px;flex-wrap:wrap}.reviews-toolbar strong{font-size:33px;letter-spacing:-.04em;color:var(--s-mint)}.reviews-toolbar #reviewsTotal{font-size:12px;color:var(--s-muted)}.reviews-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:28px}.customer-review{padding:26px;border:1px solid var(--s-line);background:var(--s-panel);border-radius:18px;animation:discovery-enter .35s ease both;min-width:0}.customer-stars{font-size:20px;letter-spacing:.1em;color:var(--s-mint)}.customer-quote{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;color:var(--s-text);line-height:1.85;margin:20px 0 25px}.customer-review-footer{display:flex;flex-direction:column;gap:8px;border-top:1px solid var(--s-line);padding-top:18px}.customer-review-footer strong{font-size:13px;overflow-wrap:anywhere}.verified-review{font-size:10px;color:var(--s-mint)}.customer-review-footer time{font-size:10px;color:var(--s-muted)}.reviews-empty{padding:38px;text-align:center;border:1px dashed var(--s-line);border-radius:19px;margin-top:27px;background:var(--s-panel)}.reviews-empty>span{font-size:35px;color:var(--s-mint)}.reviews-empty h3{font-size:26px;margin:12px 0}.reviews-empty p{font-size:13px;color:var(--s-muted);max-width:510px;margin:auto}.reviews-loading{margin:20px 0}.reviews-loading p{font-size:12px;color:var(--s-muted)}.reviews-loading button{margin-top:8px}@media(max-width:1050px){.reviews-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.topbar nav{gap:13px;font-size:12px}}@media(max-width:700px){.reviews-grid{grid-template-columns:1fr}.reviews-toolbar{flex-wrap:wrap}.reviews-toolbar #reviewsAggregate{gap:12px}.reviews-empty{padding:28px 20px}.customer-review{padding:23px}.reviews-empty h3{font-size:24px}}@media(prefers-reduced-motion:reduce){.customer-review{animation:none}}
.install-layout{display:grid;grid-template-columns:1fr 1fr;gap:65px;align-items:center}.install-phone-demo{border:1px solid var(--s-line);border-radius:24px;background:radial-gradient(ellipse at center,var(--s-soft),var(--s-panel));padding:24px}.install-demo-top{display:flex;justify-content:space-between;align-items:center;gap:15px;font-size:9px;color:var(--s-muted)}.demo-phone{width:260px;height:455px;border:7px solid #070b09;border-radius:38px;background:var(--s-bg);margin:25px auto;position:relative;box-shadow:0 20px 50px #0003;overflow:hidden}.phone-status{position:absolute;top:12px;left:19px;right:19px;display:flex;justify-content:space-between;align-items:center;font-size:10px;z-index:4}.phone-status i{width:70px;height:17px;border-radius:20px;background:#070b09}.phone-homebar{position:absolute;bottom:9px;left:32%;width:36%;height:4px;background:var(--s-muted);border-radius:4px;z-index:4}.install-scene{position:absolute;inset:48px 17px 28px;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .55s,transform .65s,visibility .55s;pointer-events:none}.install-scene.is-active{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}.home-demo-heading{font-size:13px;color:var(--s-muted);text-align:center;margin:8px 0 27px}.demo-app-grid{display:flex;gap:12px;justify-content:center}.demo-app-grid i{font-style:normal;display:grid;place-items:center;width:36px;height:36px;background:var(--s-soft);border:1px solid var(--s-line);border-radius:10px;color:var(--s-muted);font-size:19px}.home-app{position:relative;margin:38px auto 15px;width:100px;display:flex;align-items:center;flex-direction:column;gap:9px;font-size:11px}.home-app img,.app-launch img{border-radius:18px;box-shadow:0 8px 18px #0002}.tap-ring{position:absolute;top:28px;left:40px;width:28px;height:28px;border:2px solid var(--s-mint);border-radius:50%;animation:install-tap 4s ease infinite;animation-play-state:paused}.install-running .tap-ring{animation-play-state:running}.home-demo-note{font-size:11px;text-align:center;color:var(--s-muted)}.phone-dock{position:absolute;bottom:8px;left:0;right:0;background:var(--s-soft);border:1px solid var(--s-line);border-radius:18px;padding:12px;display:flex;justify-content:space-between}.phone-dock i{width:29px;height:29px;border-radius:9px;background:var(--s-panel)}.app-launch{height:100%;display:flex;align-items:center;justify-content:center;flex-direction:column}.app-launch h3{font-size:25px;margin:23px 0 9px}.app-launch p{font-size:11px;color:var(--s-muted)}.launch-dots{display:flex;gap:6px;margin-top:25px}.launch-dots i{width:5px;height:5px;background:var(--s-mint);border-radius:50%;animation:install-dot 1.4s ease infinite;animation-play-state:paused}.launch-dots i:nth-child(2){animation-delay:.2s}.launch-dots i:nth-child(3){animation-delay:.4s}.install-running .launch-dots i{animation-play-state:running}.installed-app-head{display:flex;align-items:center;gap:8px;margin:0 0 24px;font-size:12px}.installed-app-head img{border-radius:8px}.installed-app-head>span{margin-left:auto;color:var(--s-muted)}.install-scene .mini-label{font-size:8px}.install-scene h3{font-size:23px;line-height:1.18;margin:12px 0 20px}.installed-task{padding:11px 12px;margin:8px 0;border-radius:11px;background:var(--s-panel);border:1px solid var(--s-line)}.installed-task span{font-size:7px;color:var(--s-mint);letter-spacing:.07em;display:block}.installed-task b{font-size:10px;font-weight:550}.installed-demo-button{background:var(--s-lime);color:#17291c;font-size:10px;text-align:center;padding:11px 5px;border-radius:9px;margin-top:14px}.install-scene>small{display:block;text-align:center;font-size:8px;color:var(--s-muted);margin-top:10px}.install-demo-controls{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:13px;border-top:1px solid var(--s-line);padding-top:17px}.install-demo-controls>div{display:flex;gap:7px}.install-demo-controls button{font-size:10px;color:var(--s-muted);background:none;border:1px solid var(--s-line);border-radius:7px;min-height:40px;padding:8px 10px}.install-demo-controls button[aria-pressed=true]{color:var(--s-mint);border-color:var(--s-mint)}.install-phone-demo>.fine-print{font-size:10px;margin-top:13px}.install-platforms{display:flex;gap:8px;flex-wrap:wrap;margin:17px 0 27px}.install-platforms button{color:var(--s-muted);background:var(--s-panel);border:1px solid var(--s-line);border-radius:24px;font-size:12px;padding:10px 15px;min-height:44px}.install-platforms button[aria-pressed=true]{background:var(--s-lime);color:#17291c;border-color:var(--s-lime)}.install-instructions h3{font-size:31px}.install-instructions ol{counter-reset:install;list-style:none;padding:0;margin:26px 0}.install-instructions li{counter-increment:install;position:relative;padding-left:43px;min-height:33px;margin:18px 0;color:var(--s-muted);font-size:13px;line-height:1.85}.install-instructions li:before{content:counter(install);position:absolute;left:0;top:0;display:grid;place-items:center;width:28px;height:28px;border:1px solid var(--s-line);border-radius:8px;color:var(--s-mint);font-size:11px}.install-note{border-left:2px solid var(--s-mint);padding-left:18px;margin:29px 0}.install-note strong{font-size:13px}.install-note p{font-size:12px;color:var(--s-muted);line-height:1.85;margin-top:9px}.install-instructions>.fine-print{margin-top:19px}.install-instructions>.button{font-size:12px;gap:17px}.install-source-links{display:flex;gap:20px;flex-wrap:wrap;font-size:10px;color:var(--s-mint);margin-top:20px}@keyframes install-tap{0%,30%,78%,100%{opacity:0;transform:scale(.6)}40%{opacity:1;transform:scale(.8)}70%{opacity:0;transform:scale(2.1)}}@keyframes install-dot{0%,100%{opacity:.25;transform:translateY(0)}50%{opacity:1;transform:translateY(-4px)}}@media(max-width:1050px){.install-layout{gap:32px}.install-phone-demo{padding:20px}.install-demo-top{flex-wrap:wrap;gap:7px}.install-instructions h3{font-size:28px}}@media(max-width:700px){.install-layout{grid-template-columns:1fr;gap:35px}.install-phone-demo{padding:21px}.install-instructions .button{width:100%}.install-demo-controls{gap:10px}.install-platforms{gap:7px}}@media(max-width:360px){.demo-phone{width:242px;height:455px}.install-phone-demo{padding:17px 10px}.install-platforms button{font-size:11px;padding:9px 12px}.install-demo-controls button{padding:7px 9px;font-size:9px}}
@media(prefers-reduced-motion:reduce){.install-scene{transition:none;transform:none}.tap-ring,.launch-dots i{animation:none}}:root[data-motion=reduce] .install-scene{transform:none}
.install-scene[data-install-scene="2"] .installed-app-head{margin-bottom:15px}.install-scene[data-install-scene="2"] h3{font-size:22px;margin:10px 0 16px}.installed-task{padding:7px 12px;margin:5px 0}.installed-demo-button{padding:9px 5px;margin-top:10px}.install-scene>small{margin-top:8px}

.delivery-reminder{margin-top:20px;padding:18px;border:1px solid currentColor;border-radius:16px;overflow-wrap:anywhere}.delivery-reminder>strong{font-size:1rem}.delivery-reminder p{font-size:.9rem;line-height:1.65;margin:10px 0 0}

.price-intro .course-access-note{margin:14px 0 22px;max-width:38ch;font-size:14px;line-height:1.6;color:var(--s-muted);overflow-wrap:break-word}