@font-face{font-family:Satoshi;src:url("assets/fonts/satoshi-regular.otf") format("opentype");font-display:swap;font-weight:400}
@font-face{font-family:Satoshi;src:url("assets/fonts/satoshi-medium.otf") format("opentype");font-display:swap;font-weight:500}
@font-face{font-family:Satoshi;src:url("assets/fonts/satoshi-bold.otf") format("opentype");font-display:swap;font-weight:700}
@font-face{font-family:Zodiak;src:url("assets/fonts/zodiak-regular.otf") format("opentype");font-display:swap;font-weight:400}
@font-face{font-family:Zodiak;src:url("assets/fonts/zodiak-bold.otf") format("opentype");font-display:swap;font-weight:700}

:root{--paper:#f4f1eb;--paper-light:#fbfaf7;--paper-warm:#f8f3e9;--ink:#191816;--ink-soft:#706d67;--hairline:rgba(25,24,22,.14);--coral:#e86656;--yellow:#e3ab2f;--green:#2b796f;--blue:#315e78;--header-h:68px;--page-shadow:0 18px 34px rgba(54,47,38,.14);color-scheme:light;font-family:Satoshi,Arial,sans-serif;font-synthesis:none}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{width:100%;height:100%;margin:0}
html{background:var(--paper)}
body{overflow:hidden;background:linear-gradient(rgba(255,255,255,.23),rgba(255,255,255,0)),url("assets/paper-texture.webp?v=2") repeat,var(--paper);color:var(--ink);text-rendering:optimizeLegibility}
button,a{font:inherit}
button{color:inherit}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.skip-link{position:fixed;z-index:200;top:-50px;left:16px;padding:10px 16px;border-radius:9px;background:var(--ink);color:white;transition:top .2s}.skip-link:focus{top:12px}
.eyebrow,.step-number,.pricing-kind{margin:0;color:var(--ink-soft);font-size:11px;font-weight:700;letter-spacing:.18em;text-transform:uppercase}

.site-header{position:fixed;z-index:100;top:max(12px,env(safe-area-inset-top));left:50%;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;width:min(1120px,calc(100% - 28px));min-height:var(--header-h);padding:8px 12px;border:1px solid rgba(255,255,255,.72);border-radius:36px;background:rgba(255,255,255,.72);box-shadow:0 18px 36px rgba(55,48,40,.12),inset 0 1px rgba(255,255,255,.8);backdrop-filter:blur(22px) saturate(1.12);transform:translateX(-50%)}
.brand{display:flex;align-items:center;justify-self:start;gap:10px;padding:0;border:0;background:none;cursor:pointer;font-weight:700}
.brand-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;background:#141412;box-shadow:0 8px 18px rgba(25,24,22,.2)}
.brand-mark img{width:28px;height:28px;object-fit:contain;transform:translateY(1px)}
.main-nav{display:flex;gap:38px}.main-nav button,.mobile-nav button{padding:9px 0;border:0;background:none;color:#625f59;cursor:pointer;font-size:14px;font-weight:700}.main-nav button:hover,.main-nav button:focus-visible{color:var(--ink)}
.header-actions{display:flex;align-items:center;justify-self:end;gap:8px}
.button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:0 20px;border:1px solid transparent;border-radius:999px;cursor:pointer;font-size:14px;font-weight:700;transition:transform .2s,box-shadow .2s,background .2s}
.button:hover{transform:translateY(-1px)}.button:focus-visible,.brand:focus-visible,.main-nav button:focus-visible,.carousel-arrow:focus-visible,.course-book:focus-visible,.deck-controls button:focus-visible{outline:3px solid rgba(232,102,86,.28);outline-offset:3px}
.button-primary{border-color:var(--ink);background:var(--ink);color:white;box-shadow:0 10px 22px rgba(25,24,22,.15)}
.button-outline{border-color:var(--hairline);background:rgba(255,255,255,.52);color:var(--ink)}
.button-quiet{background:transparent}.button-label-short{display:none}
.mobile-nav{display:none;justify-self:end}.mobile-nav summary{display:grid;gap:4px;width:42px;height:42px;padding:13px;border-radius:50%;cursor:pointer;list-style:none}.mobile-nav summary::-webkit-details-marker{display:none}.mobile-nav summary span{display:block;height:2px;border-radius:3px;background:var(--ink)}
.mobile-nav nav{position:absolute;top:64px;right:84px;display:grid;min-width:160px;padding:10px 18px;border:1px solid rgba(255,255,255,.8);border-radius:18px;background:rgba(255,255,255,.94);box-shadow:0 16px 30px rgba(54,47,38,.16);backdrop-filter:blur(20px)}

.presentation-shell,.deck,.access-view{position:fixed;inset:0}.presentation-shell{z-index:1}.deck{overflow:hidden}.slide{position:absolute;inset:0;overflow:hidden;padding:calc(var(--header-h) + 48px) clamp(40px,7vw,112px) 80px;opacity:0;visibility:hidden;pointer-events:none}.slide.is-active{opacity:1;visibility:visible;pointer-events:auto}

.intro-slide{display:grid;grid-template-rows:minmax(235px,44%) minmax(0,56%);align-items:center;text-align:center}
.intro-copy{align-self:end;min-width:0;max-width:1050px;margin:0 auto 8px}
.intro-copy h1{margin:14px 0 0;font-family:Zodiak,Georgia,serif;font-size:clamp(62px,7.4vw,112px);font-weight:400;line-height:.83;letter-spacing:-.055em}
.intro-copy h1 em{display:inline;color:var(--coral);font-style:normal}.hero-lead{margin:24px 0 0;color:var(--ink-soft);font-size:clamp(17px,1.35vw,21px)}
.course-picker{position:relative;align-self:stretch;min-width:0;width:min(1180px,100%);margin:0 auto}
.carousel-window{position:absolute;inset:0 54px 48px;overflow:hidden;mask-image:linear-gradient(90deg,transparent,#000 9%,#000 91%,transparent)}
.course-carousel{position:absolute;inset:0;touch-action:none;cursor:grab}.course-carousel.is-dragging{cursor:grabbing}.course-carousel.is-dragging .course-book{transition:none}
.course-book{position:absolute;top:50%;left:50%;width:clamp(112px,10.6vw,170px);aspect-ratio:3/4;padding:0;border:0;background:none;cursor:pointer;transform-origin:center bottom;transition:transform .48s cubic-bezier(.2,.75,.25,1),opacity .35s,filter .35s;will-change:transform,opacity}
.course-book[aria-selected="true"]{filter:drop-shadow(0 19px 18px rgba(49,94,120,.2))}
.book-face,.opening-cover{position:absolute;inset:0;overflow:hidden;border-radius:2px 18px 18px 2px;background:linear-gradient(90deg,rgba(0,0,0,.2),transparent 10%,transparent 91%,rgba(255,255,255,.12)),url("assets/leather-texture.webp") repeat,var(--book-color);background-blend-mode:multiply,soft-light,normal;box-shadow:11px 20px 30px rgba(54,47,38,.2),inset 1px 0 rgba(255,255,255,.18)}
.book-face::before,.opening-cover::before{position:absolute;top:0;bottom:0;left:9px;width:1px;background:rgba(0,0,0,.22);box-shadow:2px 0 rgba(255,255,255,.14);content:""}
.book-coral{--book-color:#b85d48}.book-green{--book-color:#28776d}.book-blue{--book-color:#315e78}.book-gold{--book-color:#a67b1e}.book-charcoal{--book-color:#393936}.book-plum{--book-color:#76506a}.book-sky{--book-color:#4b7890}
.cover-bars{position:absolute;z-index:2;top:11%;right:11%;left:15%;display:grid;gap:7px}.cover-bars i{display:block;width:74%;height:4px;border-radius:99px;background:rgba(255,255,255,.8)}.cover-bars i:nth-child(2){width:48%;opacity:.72}.cover-bars i:nth-child(3){width:61%;height:2px;opacity:.48}
.cover-symbol{position:absolute;inset:35% 16% 14% 18%;opacity:.74}.symbol-arc{border:2px solid rgba(255,255,255,.72);border-bottom:0;border-radius:50% 50% 0 0}.symbol-arc::after{position:absolute;inset:28% 23% 8%;border-radius:50%;background:rgba(255,255,255,.28);content:""}
.symbol-grid{background:linear-gradient(rgba(255,255,255,.15) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.15) 1px,transparent 1px);background-size:22% 22%}.symbol-grid::after{position:absolute;right:8%;bottom:10%;width:62%;height:3px;border-radius:4px;background:#f4c054;content:"";transform:rotate(-32deg)}
.symbol-target{border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.75) 0 15%,transparent 16% 28%,rgba(255,255,255,.45) 29% 46%,transparent 47% 61%,rgba(255,255,255,.26) 62%)}
.symbol-bars{background:linear-gradient(90deg,rgba(255,255,255,.25) 0 17%,transparent 17% 25%,rgba(255,255,255,.43) 25% 45%,transparent 45% 53%,rgba(255,255,255,.64) 53% 75%,transparent 75% 83%,rgba(255,255,255,.84) 83%);clip-path:polygon(0 68%,17% 68%,17% 43%,45% 43%,45% 25%,75% 25%,75% 0,100% 0,100% 100%,0 100%)}
.symbol-diamond{inset:39% 23% 18%;border:1px solid rgba(255,255,255,.52);transform:rotate(45deg)}.symbol-diamond::before,.symbol-diamond::after{position:absolute;inset:18%;border:1px solid rgba(255,255,255,.56);content:""}.symbol-diamond::after{inset:35%;background:rgba(255,196,77,.74)}
.symbol-wave::before,.symbol-wave::after{position:absolute;right:0;left:0;height:28%;border:3px solid rgba(255,255,255,.62);border-right-color:transparent;border-left-color:transparent;border-radius:50%;content:""}.symbol-wave::before{top:16%;transform:rotate(-13deg)}.symbol-wave::after{bottom:16%;transform:rotate(13deg)}
.symbol-axis{background:linear-gradient(90deg,transparent 48%,rgba(255,255,255,.58) 48% 51%,transparent 51%),linear-gradient(transparent 48%,rgba(255,255,255,.58) 48% 51%,transparent 51%)}.symbol-axis::after{position:absolute;top:47%;left:14%;width:76%;height:3px;border-radius:3px;background:#f4c054;content:"";transform:rotate(-34deg)}
.carousel-arrow{position:absolute;z-index:8;top:45%;display:grid;place-items:center;width:44px;height:44px;border:1px solid var(--hairline);border-radius:50%;background:rgba(255,255,255,.66);box-shadow:0 8px 18px rgba(54,47,38,.09);cursor:pointer;font-size:20px;transition:transform .2s,background .2s}.carousel-arrow:hover{background:white;transform:scale(1.05)}.carousel-prev{left:0}.carousel-next{right:0}
.carousel-status{position:absolute;right:0;bottom:9px;left:0;display:grid;place-items:center;gap:7px;color:var(--ink-soft);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase}.carousel-dots{display:flex;gap:6px}.carousel-dots i{display:block;width:6px;height:6px;border-radius:50%;background:#c6c0b6;transition:width .25s,background .25s}.carousel-dots i.is-active{width:22px;border-radius:7px;background:var(--coral)}

.slide-layout{display:grid;grid-template-columns:minmax(300px,.78fr) minmax(520px,1.28fr);align-items:center;gap:clamp(40px,6vw,100px);width:min(1240px,100%);height:100%;margin:0 auto}
.slide-copy{position:relative;z-index:5;max-width:470px}.slide-copy h2{margin:16px 0 24px;font-family:Zodiak,Georgia,serif;font-size:clamp(50px,4.6vw,76px);font-weight:400;line-height:.92;letter-spacing:-.05em}.slide-copy>p:last-of-type{margin:0;color:var(--ink-soft);font-size:clamp(17px,1.35vw,20px);line-height:1.6}.step-number{color:var(--coral)}
mark{padding:0 .12em;border-radius:3px;background:transparent;color:inherit;font-weight:700;transition:box-shadow .35s}.mark-goal.is-highlighted{box-shadow:inset 0 -.5em rgba(45,139,119,.2)}.mark-exam.is-highlighted{box-shadow:inset 0 -.5em rgba(229,94,76,.2)}.mark-review.is-highlighted{box-shadow:inset 0 -.5em rgba(59,103,160,.2)}
.slide-visual{position:relative;width:100%;height:min(590px,68dvh);isolation:isolate}.slide-visual::before{position:absolute;z-index:-1;top:50%;left:50%;width:min(52vw,680px);aspect-ratio:1;border-radius:50%;background:radial-gradient(circle,rgba(255,255,255,.92),rgba(255,255,255,.28) 44%,transparent 70%);content:"";transform:translate(-50%,-50%)}

.notebook{position:absolute;top:50%;left:50%;width:min(94%,660px);aspect-ratio:738/499;perspective:1400px;transform:translate(-50%,-50%);transform-style:preserve-3d}
.notebook-under-cover{position:absolute;z-index:-3;top:7px;right:1px;bottom:2px;left:1px;border-radius:11px 11px 18px 18px;background:var(--selected-course-color,#315e78) url("assets/leather-texture.webp") repeat;background-blend-mode:soft-light;box-shadow:0 25px 42px rgba(65,54,45,.2)}
.notebook-volume{position:absolute;z-index:-1;top:5px;right:9px;bottom:10px;left:9px;border:1px solid rgba(102,87,68,.13);border-radius:16px;background:linear-gradient(90deg,rgba(119,103,82,.19),transparent 4%,transparent 49.2%,rgba(119,103,82,.15) 50%,transparent 50.8%,transparent 96%,rgba(119,103,82,.16)),repeating-linear-gradient(0deg,#d8cfbf 0 1px,#fbf6ea 1px 2.8px);box-shadow:-.7px 2.15px 0 #f5ead4,.5px 4.3px 0 #e9dcc1,-.4px 6.45px 0 #f3e8d1,.6px 8.6px 0 #eadcc3}
.notebook-volume::before{position:absolute;right:5px;bottom:-9px;left:5px;height:10px;border-radius:0 0 14px 14px;background:repeating-linear-gradient(0deg,#d3c9b9 0 1px,#f8f2e6 1px 2.2px);box-shadow:inset 8px 0 rgba(124,108,88,.08),inset -8px 0 rgba(124,108,88,.08);content:""}
.notebook-volume::after{position:absolute;top:-2px;bottom:-9px;left:50%;width:22px;background:linear-gradient(90deg,transparent,rgba(63,54,44,.08) 43%,rgba(255,255,255,.2) 50%,rgba(63,54,44,.06) 57%,transparent);content:"";transform:translateX(-50%)}
.notebook-pages{position:absolute;z-index:1;top:2px;right:9px;bottom:17px;left:9px;display:grid;grid-template-columns:1fr 1fr;filter:drop-shadow(0 18px 23px rgba(59,51,42,.14))}.notebook-page{position:relative;overflow:hidden;border:1px solid rgba(25,24,22,.1);background:linear-gradient(rgba(255,255,255,.14),rgba(255,255,255,0)),url("assets/paper-texture.webp?v=2") repeat,var(--paper-warm)}.notebook-left{border-radius:16px 0 0 16px;box-shadow:inset -11px 0 15px -15px rgba(25,24,22,.55)}.notebook-right{border-radius:0 16px 16px 0;box-shadow:inset 11px 0 15px -15px rgba(25,24,22,.55)}
.opening-cover{position:absolute;z-index:7;top:2px;right:9px;bottom:17px;left:50%;border-radius:0 16px 16px 0;backface-visibility:hidden;transform-origin:left center;transform-style:preserve-3d}
.index-heading{width:32%;height:10px;margin:14% 10% 7%;border-radius:9px;background:rgba(25,24,22,.72)}.index-row{display:grid;grid-template-columns:22px 1fr;align-items:center;gap:10px;margin:0 10%;padding:5% 0;border-top:1px solid var(--hairline)}.index-row i{width:18px;aspect-ratio:1;border-radius:50%;background:var(--coral)}.index-row b{width:76%;height:6px;border-radius:9px;background:rgba(25,24,22,.18)}.index-row:nth-child(3) b{width:58%}.index-row:nth-child(4) b{width:86%}.index-row:nth-child(5) b{width:66%}
.calendar-card{position:absolute;z-index:5;top:5%;right:-3%;width:42%;height:90%;overflow:hidden;padding:5.5%;border:1px solid rgba(25,24,22,.14);background:linear-gradient(rgba(255,255,255,.14),rgba(255,255,255,0)),url("assets/paper-texture.webp?v=2") repeat,var(--paper-light);box-shadow:0 16px 30px rgba(54,47,38,.14);transform:rotate(1deg)}
.calendar-rings{position:absolute;top:-8px;left:13%;display:flex;gap:19px}.calendar-rings i{width:3px;height:21px;border-radius:3px;background:var(--ink);box-shadow:0 2px white}.calendar-month{display:flex;align-items:flex-end;gap:12px;padding-bottom:11%;border-bottom:1px solid var(--hairline)}.calendar-month i{width:28%;aspect-ratio:1;border-radius:50%;background:var(--ink)}.calendar-month b{width:42%;height:7px;margin-bottom:5%;border-radius:8px;background:rgba(25,24,22,.3)}
.calendar-week{display:grid;grid-template-columns:repeat(7,1fr);gap:4px;margin-top:6%}.calendar-week span{width:4px;aspect-ratio:1;margin:auto;border-radius:50%;background:rgba(25,24,22,.34)}.calendar-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:5px 4px;margin-top:5%}.calendar-grid span{aspect-ratio:1;border-radius:50%;background:rgba(25,24,22,.06)}.goal-event{background:#2d8b77!important}.exam-event{background:#e55e4c!important}.review-event{background:#3b67a0!important}.calendar-event{opacity:0;transform:scale(.2)}.calendar-legend{display:flex;gap:7px;margin-top:6%;padding-top:5%;border-top:1px solid var(--hairline)}.calendar-legend i{width:29%;height:8px;border-radius:9px;opacity:0;transform:scaleX(.2)}

.topic-stream{position:absolute;inset:13% 8% 10%}.topic{display:grid;grid-template-columns:9px 1fr;align-items:center;gap:8px;height:20%;margin-bottom:4%;opacity:0}.topic i{grid-row:1/span 3;width:6px;height:100%;border-radius:5px;background:var(--coral)}.topic span{display:block;width:85%;height:5px;border-radius:8px;background:rgba(25,24,22,.2)}.topic span:nth-of-type(2){width:65%;opacity:.65}.topic span:nth-of-type(3){width:75%;opacity:.42}.topic-equation{display:flex;align-items:center;justify-content:center;gap:9px;height:18%;border-radius:8px;background:rgba(232,102,86,.1);opacity:0}.topic-equation i{width:22%;height:4px;border-radius:5px;background:var(--coral)}.topic-equation b{width:8px;height:8px;border-radius:50%;background:var(--ink)}
.lesson-player{position:absolute;top:11%;right:6%;left:6%;aspect-ratio:1.34;overflow:hidden;border-radius:13px;background:#fff;box-shadow:0 14px 30px rgba(54,47,38,.14)}.player-screen{position:absolute;inset:0 0 42px}.player-grid{position:absolute;inset:0;background:linear-gradient(rgba(25,24,22,.08) 1px,transparent 1px),linear-gradient(90deg,rgba(25,24,22,.08) 1px,transparent 1px);background-size:28px 28px}.player-screen svg{position:absolute;inset:9px;width:calc(100% - 18px);height:calc(100% - 18px);overflow:hidden}.axis{fill:none;stroke:rgba(25,24,22,.35);stroke-width:1}.plot-line{fill:none;stroke:var(--coral);stroke-linecap:round;stroke-width:3}.plot-point{fill:var(--yellow);stroke:var(--ink);stroke-width:2}.player-controls{position:absolute;right:0;bottom:0;left:0;display:grid;grid-template-columns:auto 1fr auto auto;align-items:center;gap:9px;height:42px;padding:0 10px;border-top:1px solid var(--hairline);background:#fff}.play-icon{display:grid;place-items:center;width:30px;aspect-ratio:1;border-radius:50%;background:var(--ink);color:white;font-size:11px}.player-track{height:5px;overflow:hidden;border-radius:6px;background:rgba(25,24,22,.1)}.player-track i{display:block;width:12%;height:100%;border-radius:6px;background:var(--coral)}.player-dot{width:21px;aspect-ratio:1;border-radius:50%;background:rgba(25,24,22,.07)}

.context-bars{display:grid;gap:14px;width:60%;margin:18% 10%}.context-bars i{height:6px;border-radius:8px;background:rgba(25,24,22,.16)}.context-bars i:nth-child(2){width:72%}.context-bars i:nth-child(3){width:84%}.context-bars i:nth-child(4){width:55%}
.notes-canvas{position:absolute;inset:3%}.notes-canvas svg{width:100%;height:100%}.note-ink{fill:none;stroke:var(--coral);stroke-dasharray:720;stroke-dashoffset:720;stroke-linecap:round;stroke-linejoin:round;stroke-width:4}.note-ink.ink-two{stroke:#e7a73a;stroke-width:10}.note-ink.ink-three{stroke:#315e78;stroke-width:3}.note-card{position:absolute;z-index:3;display:grid;gap:5px;padding:12px;opacity:0;box-shadow:0 8px 17px rgba(54,47,38,.14)}.note-card i{display:block;width:78%;height:4px;border-radius:5px;background:currentColor;opacity:.72}.note-card i:nth-child(2){width:90%}.note-card i:nth-child(3){width:58%}.note-upper{top:6%;left:5%;width:35%;background:#ffc85b;color:#4d4028;transform:rotate(-3deg)}.note-lower{right:4%;bottom:6%;width:38%;background:#25282c;color:#f5c354;transform:rotate(2deg)}

.exercise-scene{position:absolute;inset:0}.exercise-sheet,.exercise-notes{position:absolute;top:50%;left:50%;width:min(46%,360px);aspect-ratio:.76;border:1px solid var(--hairline);background:linear-gradient(rgba(255,255,255,.12),rgba(255,255,255,0)),url("assets/paper-texture.webp?v=2") repeat,var(--paper-warm);box-shadow:var(--page-shadow)}.exercise-sheet{padding:8%}
.sheet-back-two{transform:translate(-65%,-46%) rotate(-11deg)}.sheet-back{transform:translate(-59%,-48%) rotate(-7deg)}.sheet-middle{transform:translate(-54%,-50%) rotate(-3deg)}.sheet-front{z-index:3;transform:translate(-49%,-52%)}.exercise-sheet header{display:grid;gap:7px;padding-bottom:6%;border-bottom:1px solid var(--hairline)}.exercise-sheet header span{width:30%;height:5px;border-radius:5px;background:var(--coral)}.exercise-sheet header b{width:62%;height:9px;border-radius:7px;background:rgba(25,24,22,.72)}.sheet-middle header span{background:#315e78}.sheet-back header span{background:#2a786e}.sheet-back-two header span{background:#dca329}.sheet-lines{display:grid;gap:9px;margin:12% 0}.sheet-lines i{height:5px;border-radius:7px;background:rgba(25,24,22,.13)}.sheet-lines i:nth-child(2){width:78%}.sheet-lines i:nth-child(3){width:58%}
.exercise-chart{position:relative;height:35%;border-radius:7px;background:linear-gradient(rgba(25,24,22,.07) 1px,transparent 1px),linear-gradient(90deg,rgba(25,24,22,.07) 1px,transparent 1px),rgba(255,255,255,.38);background-size:24px 24px}.exercise-chart i::before,.exercise-chart i::after{position:absolute;background:rgba(25,24,22,.35);content:""}.exercise-chart i::before{top:0;bottom:0;left:32%;width:1px}.exercise-chart i::after{right:0;bottom:31%;left:0;height:1px}.exercise-chart span{position:absolute;top:50%;left:19%;width:70%;height:3px;border-radius:4px;background:var(--coral);transform:rotate(-27deg)}.exercise-chart.chart-rising span{top:55%;background:#315e78;transform:rotate(-18deg)}.exercise-chart.chart-descending span{top:43%;background:#2a786e;transform:rotate(24deg)}.exercise-chart b{position:absolute;width:9px;height:9px;border-radius:50%;background:var(--yellow);box-shadow:0 0 0 2px var(--ink)}.point-one{top:62%;left:35%}.point-two{top:35%;left:68%}.chart-descending .point-one{top:35%}.chart-descending .point-two{top:62%}.exercise-mini-equation{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:8%;height:28%;margin-top:13%;padding:10%;border-radius:7px;background:rgba(255,255,255,.38)}.exercise-mini-equation i{height:4px;border-radius:5px;background:rgba(25,24,22,.22)}.exercise-mini-equation b{width:18px;aspect-ratio:1;border:3px solid #dca329;border-radius:50%}.answer-line{width:70%;margin-top:8%;border-bottom:2px solid rgba(25,24,22,.18)}.solution-dots{display:flex;gap:10px;margin-top:8%}.solution-dots i{width:22px;aspect-ratio:1;border-radius:50%;background:rgba(232,102,86,.14)}
.exercise-notes{z-index:5;overflow:hidden;padding:5%;transform:translate(13%,-49%) rotate(1deg)}.exercise-notes svg{width:100%;height:100%}.exercise-ink{fill:none;stroke:var(--coral);stroke-dasharray:720;stroke-dashoffset:720;stroke-linecap:round;stroke-linejoin:round;stroke-width:5}.exercise-ink.ink-loop{stroke:#2a786e;stroke-width:3}.exercise-ink.ink-b{stroke:#315e78;stroke-width:4}.exercise-ink.ink-arrow{stroke:#8a4059;stroke-width:4}.exercise-ink.ink-c{stroke:#dca329;stroke-width:9;opacity:.62}.exercise-postit{position:absolute;z-index:2;top:8%;right:7%;display:grid;gap:5px;width:29%;padding:12px;opacity:0;background:#ffc85b;box-shadow:0 9px 18px rgba(54,47,38,.14);transform:rotate(-3deg)}.exercise-postit i{height:4px;border-radius:4px;background:rgba(58,46,25,.6)}.exercise-postit i:nth-child(2){width:64%}.exercise-highlight{position:absolute;z-index:2;top:55%;left:10%;display:grid;gap:7px;width:39%;opacity:0;transform:rotate(-1deg)}.exercise-highlight i{height:8px;border-radius:12px 5px 10px 4px;background:rgba(232,102,86,.24)}.exercise-highlight i:nth-child(2){width:68%;margin-left:12%;background:rgba(220,163,41,.28)}.exercise-orbit{position:absolute;right:9%;bottom:7%;width:21%;aspect-ratio:1;opacity:0;border:2px solid rgba(49,94,120,.42);border-right-color:transparent;border-radius:50%}.exercise-orbit::before{position:absolute;inset:24%;border-radius:50%;background:rgba(42,119,109,.16);content:""}

.map-sheet{position:absolute;top:50%;left:50%;width:min(98%,760px);aspect-ratio:1.52;border:1px solid var(--hairline);background:linear-gradient(rgba(255,255,255,.12),rgba(255,255,255,0)),url("assets/paper-texture.webp?v=2") repeat,var(--paper-warm);box-shadow:var(--page-shadow);transform:translate(-50%,-50%)}.map-links{position:absolute;inset:0;width:100%;height:100%}.map-links path{fill:none;stroke:rgba(25,24,22,.3);stroke-width:2;stroke-dasharray:720;stroke-dashoffset:720}.map-node{position:absolute;z-index:2;display:grid;place-items:center;width:21%;min-height:52px;padding:12px;opacity:0;border:1px solid var(--hairline);border-radius:9px;background:rgba(255,255,255,.72);box-shadow:0 10px 20px rgba(54,47,38,.08)}.map-node i{display:block;width:76%;height:5px;border-radius:7px;background:rgba(25,24,22,.55)}.map-node i+i{width:52%;margin-top:7px;opacity:.45}.map-root{top:12%;left:39.5%;border-color:rgba(232,102,86,.5);background:rgba(232,102,86,.1)}.map-a{top:43%;left:5%}.map-b{top:49%;left:25%}.map-c{top:49%;right:25%}.map-d{top:43%;right:5%}.map-e{top:77%;left:24%}.map-f{top:77%;right:24%}

.stamp-grid{position:absolute;inset:0;display:grid;grid-template-columns:repeat(2,minmax(130px,210px));grid-template-rows:repeat(2,minmax(180px,285px));place-content:center;gap:clamp(8px,2vw,26px);perspective:1400px}.stamp-card{position:relative;width:100%;height:100%;filter:drop-shadow(0 13px 14px rgba(54,47,38,.18));transform:rotate(var(--stamp-rotation))}.stamp-one{--stamp-rotation:-7deg}.stamp-two{--stamp-rotation:7deg;transform:translateY(14px) rotate(var(--stamp-rotation))}.stamp-three{--stamp-rotation:5deg;transform:translateX(18px) rotate(var(--stamp-rotation))}.stamp-four{--stamp-rotation:-5deg;transform:translate(-8px,9px) rotate(var(--stamp-rotation))}.stamp-inner{position:absolute;inset:0;transform-style:preserve-3d}.stamp-front,.stamp-back,.stamp-locked{position:absolute;inset:0;display:grid;place-items:center;backface-visibility:hidden}.stamp-front{transform:rotateY(180deg)}.stamp-front img,.stamp-back img,.stamp-locked img{width:100%;height:100%;object-fit:contain}
.final-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:30px}

.deck-controls{position:absolute;z-index:40;bottom:max(18px,env(safe-area-inset-bottom));left:50%;display:flex;align-items:center;gap:13px;width:max-content;max-width:calc(100% - 28px);padding:6px;border:1px solid rgba(255,255,255,.74);border-radius:999px;background:rgba(255,255,255,.72);box-shadow:0 12px 28px rgba(55,48,40,.12);backdrop-filter:blur(18px);pointer-events:auto;transform:translateX(-50%)}.deck-controls[hidden]{display:none}.deck-back{display:grid;place-items:center;width:42px;height:42px;border:1px solid var(--hairline);border-radius:50%;background:rgba(255,255,255,.74);cursor:pointer;font-size:19px}.slide-progress{display:flex;justify-content:center;gap:10px;margin:0;padding:0 3px;list-style:none}.slide-progress button{width:8px;height:8px;padding:0;border:0;border-radius:50%;background:#beb8ae;box-shadow:0 0 0 1px rgba(25,24,22,.08);cursor:pointer;transition:width .25s,background .25s}.slide-progress button.is-active{width:24px;border-radius:8px;background:var(--coral)}

.access-view{z-index:20;display:none;overflow-y:auto;padding:calc(var(--header-h) + 30px) 22px 0;background:linear-gradient(rgba(255,255,255,.2),transparent),url("assets/paper-texture.webp?v=2") repeat,var(--paper)}.access-view.is-active{display:block}.access-content{display:flex;flex-direction:column;width:min(1160px,100%);min-height:calc(100dvh - var(--header-h) - 30px);margin:0 auto}.section-heading{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(320px,.95fr);grid-template-areas:"eyebrow intro" "title intro";align-items:end;gap:7px 54px;margin-bottom:22px}.section-heading>.eyebrow{grid-area:eyebrow}.section-heading h2{grid-area:title;margin:0;font-family:Zodiak,Georgia,serif;font-size:clamp(42px,4vw,60px);font-weight:400;line-height:.92;letter-spacing:-.045em}.section-heading>p:last-child{grid-area:intro;margin:0;padding:17px 19px;border:1px solid rgba(255,255,255,.72);border-radius:16px;background:rgba(255,255,255,.54);box-shadow:0 12px 26px rgba(54,47,38,.08);color:var(--ink-soft);font-size:14px;line-height:1.55}.pricing-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;counter-reset:plan}.pricing-card{--plan-accent:var(--coral);position:relative;display:flex;flex-direction:column;min-height:410px;padding:27px;border:1px solid var(--hairline);border-top:4px solid var(--plan-accent);border-radius:18px;background:rgba(255,255,255,.5);box-shadow:0 16px 34px rgba(54,47,38,.08);counter-increment:plan}.pricing-card:nth-child(2){--plan-accent:#315e78}.pricing-card:nth-child(3){--plan-accent:#1b1a18}.pricing-card::before{position:absolute;top:21px;right:23px;color:rgba(25,24,22,.22);font-family:Zodiak,Georgia,serif;font-size:18px;content:"0" counter(plan)}.pricing-featured{background:rgba(255,255,255,.82);box-shadow:0 20px 42px rgba(54,47,38,.14)}.pricing-card h3{min-height:58px;margin:10px 0 4px;padding-right:32px;font-family:Zodiak,Georgia,serif;font-size:30px;line-height:.95}.price-label{align-self:flex-start;margin:8px 0 18px;padding:5px 9px;border-radius:999px;background:rgba(25,24,22,.055);color:var(--ink-soft);font-size:12px;font-weight:700}.pricing-card ul{display:grid;gap:10px;margin:0 0 20px;padding:17px 0 0;border-top:1px solid var(--hairline);list-style:none}.pricing-card li{position:relative;padding-left:21px;color:var(--ink-soft);font-size:12px;line-height:1.45}.pricing-card li::before{position:absolute;top:.55em;left:2px;width:6px;height:6px;border-radius:50%;background:var(--plan-accent);content:""}.pricing-card .button{margin-top:auto}.featured-badge{position:absolute;top:20px;right:52px;padding:5px 9px;border-radius:999px;background:var(--ink);color:white;font-size:9px;font-weight:700;letter-spacing:.12em}.pricing-card li.highlight-feature{padding:11px 12px 11px 32px;border-radius:10px;background:rgba(232,102,86,.1);color:var(--ink);font-weight:700}.pricing-card li.highlight-feature::before{top:1.35em;left:12px;box-shadow:0 0 0 4px rgba(232,102,86,.12)}.pricing-note{margin:15px 0 18px;padding:0 4px;color:var(--ink-soft);font-size:12px;line-height:1.5}.site-footer{display:grid;grid-template-columns:1fr auto;align-items:center;gap:26px;margin-top:auto;padding:16px 4px max(16px,env(safe-area-inset-bottom));border-top:1px solid var(--hairline);color:var(--ink-soft);font-size:12px}.site-footer nav{display:flex;gap:24px}.site-footer p{margin:0}.site-footer a:hover{text-decoration:underline}
.noscript-message{position:fixed;z-index:300;right:16px;bottom:16px;left:16px;padding:14px;border-radius:12px;background:var(--ink);color:white;text-align:center}

@media(max-width:900px){
  :root{--header-h:60px}.site-header{grid-template-columns:auto 1fr auto;min-height:var(--header-h)}.main-nav{display:none}.mobile-nav{display:block}.slide{padding:calc(var(--header-h) + 38px) 20px 70px}.slide-layout{grid-template-columns:1fr;grid-template-rows:minmax(0,48%) minmax(0,52%);gap:0}.slide-visual{grid-row:1;width:min(640px,100%);height:100%;margin:0 auto}.slide-copy{grid-row:2;align-self:center;max-width:680px;margin:0 auto;text-align:center}.slide-copy h2{margin:10px 0 14px;font-size:clamp(39px,7vw,58px)}.slide-copy>p:last-of-type{max-width:650px;margin:0 auto;font-size:16px;line-height:1.48}.notebook{width:min(88%,560px)}.final-actions{justify-content:center;margin-top:20px}.deck-controls{gap:14px}.intro-slide{grid-template-rows:minmax(210px,42%) minmax(0,58%);padding-bottom:50px}.intro-copy h1{font-size:clamp(52px,10vw,82px)}.carousel-window{inset:0 42px 42px}.course-book{width:clamp(98px,17vw,142px)}.carousel-arrow{width:40px;height:40px}.pricing-grid{grid-template-columns:1fr;gap:12px}.pricing-card{min-height:0}.section-heading{grid-template-columns:1fr;grid-template-areas:"eyebrow" "title" "intro";gap:10px}.access-view{padding-top:calc(var(--header-h) + 38px)}
}

@media(max-width:560px){
  .site-header{top:max(7px,env(safe-area-inset-top));width:calc(100% - 16px);padding-left:6px}.brand-name{display:none}.brand-mark{width:44px;height:44px}.site-header .button{min-height:42px;padding:0 13px}.button-label-wide{display:none}.button-label-short{display:inline}.mobile-nav nav{right:71px}.slide{padding:calc(var(--header-h) + 25px) 10px 66px}.intro-slide{grid-template-rows:minmax(195px,38%) minmax(0,62%);padding-right:0;padding-left:0}.intro-copy{align-self:end;padding:0 16px}.intro-copy h1{margin:10px 0 0;font-size:clamp(45px,13.5vw,62px);line-height:.87}.hero-lead{margin-top:16px;font-size:15px}.eyebrow,.step-number{font-size:9px}.carousel-window{inset:0 28px 40px}.course-book{width:clamp(82px,27vw,116px)}.carousel-arrow{top:43%;width:34px;height:34px;background:rgba(255,255,255,.82)}.carousel-prev{left:5px}.carousel-next{right:5px}.carousel-hint{font-size:9px}.slide-layout{grid-template-rows:minmax(0,47%) minmax(0,53%)}.slide-copy{align-self:start;padding:10px 13px 0}.slide-copy h2{margin:8px 0 10px;font-size:clamp(34px,10.5vw,46px);line-height:.94}.slide-copy>p:last-of-type{font-size:14px;line-height:1.43}.slide-visual{width:100%}.notebook{width:min(94%,390px)}.notebook-under-cover{top:5px;right:1px;bottom:1px;left:1px;border-radius:8px 8px 13px 13px}.notebook-volume{top:3px;right:6px;bottom:7px;left:6px;border-radius:11px;box-shadow:-.5px 1.5px 0 #f5ead4,.4px 3px 0 #e9dcc1,-.3px 4.5px 0 #f3e8d1,.4px 6px 0 #eadcc3}.notebook-volume::before{right:3px;bottom:-6px;left:3px;height:7px;border-radius:0 0 10px 10px}.notebook-volume::after{top:-1px;bottom:-6px;width:15px}.notebook-pages{top:1px;right:6px;bottom:12px;left:6px}.notebook-left{border-radius:11px 0 0 11px}.notebook-right{border-radius:0 11px 11px 0}.opening-cover{top:1px;right:6px;bottom:12px;border-radius:0 11px 11px 0}.calendar-card{right:-1%;width:44%;height:90%;padding:5%}.calendar-rings{gap:12px}.index-heading{height:7px}.index-row{grid-template-columns:15px 1fr;gap:7px}.index-row i{width:13px}.index-row b{height:4px}.lesson-player{top:8%;right:4%;left:4%}.player-screen{inset:0 0 32px}.player-controls{height:32px;gap:5px;padding:0 6px}.play-icon{width:23px;font-size:8px}.player-dot{width:15px}.context-bars{gap:8px}.note-card{gap:3px;padding:7px}.note-card i{height:3px}.exercise-sheet,.exercise-notes{width:min(52%,210px)}.exercise-notes{transform:translate(5%,-49%) rotate(1deg)}.sheet-front{transform:translate(-57%,-52%)}.sheet-middle{transform:translate(-62%,-50%) rotate(-3deg)}.sheet-back{transform:translate(-67%,-48%) rotate(-7deg)}.sheet-back-two{transform:translate(-73%,-46%) rotate(-11deg)}.exercise-postit{gap:3px;padding:7px}.exercise-postit i{height:3px}.map-sheet{width:106%}.map-node{min-height:37px;padding:7px}.map-node i{height:4px}.map-node i+i{margin-top:5px}.stamp-grid{grid-template-columns:repeat(2,minmax(84px,125px));grid-template-rows:repeat(2,minmax(118px,170px));gap:4px}.final-actions{gap:7px;margin-top:16px}.final-actions .button{min-height:40px;padding:0 15px}.deck-controls{right:auto;bottom:max(10px,env(safe-area-inset-bottom));left:50%;gap:7px;max-width:calc(100% - 16px);padding:5px;transform:translateX(-50%)}.deck-back{width:40px;height:40px}.slide-progress{gap:8px}.slide-progress button{width:7px;height:7px}.slide-progress button.is-active{width:20px}.deck-next{min-height:40px;padding:0 13px;font-size:12px}.access-view{padding:calc(var(--header-h) + 25px) 10px 0}.section-heading{margin-bottom:16px;padding:0 6px}.section-heading h2{font-size:40px}.section-heading>p:last-child{font-size:13px}.pricing-card{padding:22px}.site-footer{grid-template-columns:1fr;gap:14px;padding-right:6px;padding-left:6px}.site-footer nav{flex-wrap:wrap;gap:14px}
}

@media(max-height:700px) and (max-width:900px){
  .slide{padding-top:calc(var(--header-h) + 17px);padding-bottom:58px}.intro-slide{grid-template-rows:45% 55%}.intro-copy{align-self:start}.intro-copy h1{margin-top:4px;font-size:clamp(34px,7.5vh,42px)}.intro-copy .eyebrow{display:none}.hero-lead{margin-top:12px;font-size:13px}.carousel-status{bottom:2px}.slide-layout{grid-template-rows:46% 54%}.slide-copy h2{font-size:clamp(31px,7vh,40px);margin:5px 0 7px}.slide-copy>p:last-of-type{font-size:13px;line-height:1.35}.step-number{font-size:8px}.deck-controls{bottom:7px}.notebook{width:min(83%,340px)}.final-actions{margin-top:10px}.final-actions .button{min-height:36px}.stamp-grid{grid-template-columns:repeat(2,minmax(76px,102px));grid-template-rows:repeat(2,minmax(104px,140px))}
}

@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}