.study-shell{--subject-accent:var(--study-accent);height:100%;color:var(--study-ink);background-color:var(--study-bg);background-position:50%;background-size:cover;flex-direction:column;display:flex;overflow:hidden}.study-shell *{box-sizing:border-box}.study-shell button,.study-shell input,.study-shell textarea{font:inherit;color:inherit;-webkit-tap-highlight-color:transparent}.study-shell svg{fill:none;stroke:currentColor;stroke-width:1.8px;stroke-linecap:round;stroke-linejoin:round;width:22px;height:22px}.study-scroll,.study-subject-page{flex:1;padding-bottom:72px;animation:.2s studyFade;overflow-y:auto}.study-home{padding-bottom:8px}.study-profile{position:relative}.study-banner{background:linear-gradient(135deg,var(--study-surface),var(--study-surface));background-position:50%;background-size:cover;height:126px}@supports (color:color-mix(in srgb,red 50%,blue)){.study-banner{--cmx-4te3aw-tj:color-mix(in srgb,var(--study-accent) 15%,var(--study-surface));--cmx-4te3aw-tk:color-mix(in srgb,var(--study-accent) 32%,var(--study-surface));background:linear-gradient(135deg,var(--cmx-4te3aw-tj),var(--cmx-4te3aw-tk));background-position:50%;background-size:cover}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-banner{background:linear-gradient(135deg,color-mix(in srgb,var(--study-accent) 15%,var(--study-surface)),color-mix(in srgb,var(--study-accent) 32%,var(--study-surface)));background-position:50%;background-size:cover}}.study-banner:after{content:"";background:linear-gradient(#0000,#0000);height:126px;position:absolute;inset:0 0 auto}@supports (color:color-mix(in srgb,red 50%,blue)){.study-banner:after{--cmx-4te3aw-tl:color-mix(in srgb,var(--study-bg) 42%,transparent);background:linear-gradient(180deg,transparent,var(--cmx-4te3aw-tl))}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-banner:after{background:linear-gradient(180deg,transparent,color-mix(in srgb,var(--study-bg) 42%,transparent))}}.study-banner button{z-index:1;color:#fff;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);background:#1115;border:1px solid #ffffff80;border-radius:50%;place-items:center;width:32px;height:32px;display:grid;position:absolute;bottom:12px;right:14px}.study-banner button svg{width:16px}.study-profile-body{z-index:2;flex-direction:column;align-items:center;margin-top:-30px;display:flex;position:relative}.study-avatar{border:3px solid var(--study-surface);background:var(--study-surface);border-radius:50%;place-items:center;width:62px;height:62px;font-size:22px;font-weight:700;display:grid;overflow:hidden;box-shadow:0 5px 20px #0002}.study-avatar img{object-fit:cover;width:100%;height:100%}.study-profile-body strong{margin-top:7px;font-size:17px}.study-profile-body p{color:var(--study-muted);margin:3px 0 0;font-size:11px}.study-profile-body input{border:0;border-bottom:1px solid var(--study-accent);text-align:center;background:0 0;outline:0;width:190px;margin-top:5px}.study-summary{border:1px solid var(--study-line);background:var(--study-surface);-webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);border-radius:18px;grid-template-columns:repeat(3,1fr);margin:17px 15px 5px;padding:13px;display:grid}@supports (color:color-mix(in srgb,red 50%,blue)){.study-summary{--cmx-4te3aw-tm:color-mix(in srgb,var(--study-line) 70%,transparent);border:1px solid var(--cmx-4te3aw-tm);--cmx-4te3aw-tn:color-mix(in srgb,var(--study-surface) 88%,transparent);background:var(--cmx-4te3aw-tn);border-radius:18px}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-summary{border:1px solid color-mix(in srgb,var(--study-line) 70%,transparent);background:color-mix(in srgb,var(--study-surface) 88%,transparent);border-radius:18px}}.study-summary div{text-align:center}.study-summary div+div{border-left:1px solid var(--study-line)}.study-summary strong,.study-summary small{display:block}.study-summary strong{font-size:21px}.study-summary small{color:var(--study-muted);margin-top:2px;font-size:9px}.study-section-head{justify-content:space-between;align-items:end;padding:18px 17px 9px;display:flex}.study-section-head.compact{padding-top:22px}.study-section-head small,.study-subject-hero>small,.study-panel header small,.study-data-page header small,.study-settings-page header small{letter-spacing:2px;color:var(--study-muted);font-size:7px}.study-section-head h2{margin:3px 0 0;font-size:18px}.study-section-head>span{color:var(--study-muted);font-size:10px}.study-subject-list{gap:10px;padding:0 14px;display:grid}.study-subject-card{--subject-color:var(--study-accent);border:1px solid var(--study-line);background:linear-gradient(115deg,var(--study-surface),var(--study-surface));text-align:left;border-radius:21px;align-items:center;gap:14px;width:100%;min-height:102px;padding:15px;transition:transform .16s;display:flex;position:relative;overflow:hidden;box-shadow:0 8px 22px #0000}@supports (color:color-mix(in srgb,red 50%,blue)){.study-subject-card{--cmx-4te3aw-to:color-mix(in srgb,var(--subject-color) 22%,var(--study-line));border:1px solid var(--cmx-4te3aw-to);--cmx-4te3aw-tp:color-mix(in srgb,var(--subject-color) 13%,var(--study-surface));--cmx-4te3aw-tq:color-mix(in srgb,var(--study-surface) 94%,transparent);background:linear-gradient(115deg,var(--cmx-4te3aw-tp),var(--cmx-4te3aw-tq));--cmx-4te3aw-tr:color-mix(in srgb,var(--subject-color) 8%,transparent);box-shadow:0 8px 22px var(--cmx-4te3aw-tr);border-radius:21px}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-subject-card{border:1px solid color-mix(in srgb,var(--subject-color) 22%,var(--study-line));background:linear-gradient(115deg,color-mix(in srgb,var(--subject-color) 13%,var(--study-surface)),color-mix(in srgb,var(--study-surface) 94%,transparent));box-shadow:0 8px 22px color-mix(in srgb,var(--subject-color) 8%,transparent);border-radius:21px}}.study-subject-card:active{transform:scale(.98)}.study-subject-card.is-english{--subject-color:#e0607e}.study-subject-card.is-python{--subject-color:#4a8dd6}.study-subject-card.is-frontend{--subject-color:#81c784}.study-subject-icon{width:48px;height:48px;color:var(--subject-color);background:var(--study-surface);border-radius:16px;flex:0 0 48px;place-items:center;display:grid;box-shadow:inset 0 0 0 1px #0000}@supports (color:color-mix(in srgb,red 50%,blue)){.study-subject-icon{--cmx-4te3aw-ts:color-mix(in srgb,var(--subject-color) 12%,var(--study-surface));background:var(--cmx-4te3aw-ts);--cmx-4te3aw-tt:color-mix(in srgb,var(--subject-color) 24%,transparent);box-shadow:inset 0 0 0 1px var(--cmx-4te3aw-tt)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-subject-icon{background:color-mix(in srgb,var(--subject-color) 12%,var(--study-surface));box-shadow:inset 0 0 0 1px color-mix(in srgb,var(--subject-color) 24%,transparent)}}.study-subject-icon svg{width:25px;height:25px}.study-subject-icon.is-english{--subject-color:#e0607e}.study-subject-icon.is-python{--subject-color:#4a8dd6}.study-subject-icon.is-frontend{--subject-color:#81c784}.study-subject-card>div{flex:1;min-width:0;position:relative}.study-subject-card small{letter-spacing:1.5px;color:var(--subject-color);font-size:7px}.study-subject-card strong{margin:2px 0;font-size:17px;display:block}.study-subject-card p{color:var(--study-muted);margin:0 0 9px;font-size:10px}.study-subject-card div>span{background:var(--study-line);border-radius:5px;height:4px;margin-right:38px;display:block;overflow:hidden}@supports (color:color-mix(in srgb,red 50%,blue)){.study-subject-card div>span{--cmx-4te3aw-tu:color-mix(in srgb,var(--subject-color) 12%,var(--study-line));background:var(--cmx-4te3aw-tu)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-subject-card div>span{background:color-mix(in srgb,var(--subject-color) 12%,var(--study-line))}}.study-subject-card div>span i{border-radius:inherit;background:var(--subject-color);height:100%;display:block}.study-subject-card em{color:var(--study-muted);font-size:8px;font-style:normal;position:absolute;bottom:-3px;right:0}.study-recent{background:var(--study-surface);border:1px solid var(--study-line);border-radius:18px;margin:0 15px 12px;overflow:hidden}@supports (color:color-mix(in srgb,red 50%,blue)){.study-recent{--cmx-4te3aw-tv:color-mix(in srgb,var(--study-surface) 90%,transparent);background:var(--cmx-4te3aw-tv)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-recent{background:color-mix(in srgb,var(--study-surface) 90%,transparent)}}.study-recent button{text-align:left;background:0 0;border:0;align-items:center;gap:10px;width:100%;padding:11px 13px;display:flex}.study-recent button+button{border-top:1px solid var(--study-line)}.study-recent i{border-radius:4px;width:3px;height:30px}.study-recent div{min-width:0}.study-recent small,.study-recent strong{display:block}.study-recent small{color:var(--study-muted);font-size:8px}.study-recent strong{white-space:nowrap;text-overflow:ellipsis;margin-top:2px;font-size:12px;overflow:hidden}.study-tabbar{left:0;right:0;bottom:var(--nav-viewport-inset,0px);height:58px;padding-bottom:env(safe-area-inset-bottom,0);z-index:20;border-top:1px solid var(--study-line);background:var(--study-surface);-webkit-backdrop-filter:blur(24px)saturate(150%);backdrop-filter:blur(24px)saturate(150%);justify-content:space-around;align-items:center;display:flex;position:absolute}@supports (color:color-mix(in srgb,red 50%,blue)){.study-tabbar{--cmx-4te3aw-tw:color-mix(in srgb,var(--study-line) 65%,transparent);border-top:1px solid var(--cmx-4te3aw-tw);--cmx-4te3aw-tx:color-mix(in srgb,var(--study-surface) 70%,transparent);background:var(--cmx-4te3aw-tx)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-tabbar{border-top:1px solid color-mix(in srgb,var(--study-line) 65%,transparent);background:color-mix(in srgb,var(--study-surface) 70%,transparent)}}.study-tabbar button{width:72px;color:var(--study-muted);background:0 0;border:0;justify-items:center;gap:2px;font-size:9px;display:grid}.study-tabbar button svg{width:19px;height:19px}.study-tabbar button.active{color:var(--study-accent)}.study-subject-hero{text-align:center;background:linear-gradient(#0000,#0000);padding:22px 18px 18px}@supports (color:color-mix(in srgb,red 50%,blue)){.study-subject-hero{--cmx-4te3aw-ty:color-mix(in srgb,var(--subject-accent) 12%,transparent);background:linear-gradient(180deg,var(--cmx-4te3aw-ty),transparent)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-subject-hero{background:linear-gradient(180deg,color-mix(in srgb,var(--subject-accent) 12%,transparent),transparent)}}.study-subject-hero>.study-subject-icon{border-radius:20px;width:58px;height:58px;margin:0 auto 10px}.study-subject-hero h1{max-width:250px;margin:5px auto 16px;font:500 21px/1.5 Noto Serif SC,serif}.study-subject-hero>div{justify-content:center;gap:30px;display:flex}.study-subject-hero>div span{font-size:18px;font-weight:700}.study-subject-hero>div small{color:var(--study-muted);margin-top:2px;font-size:8px;font-weight:400;display:block}.study-subject-actions{grid-template-columns:1fr 1fr;gap:10px;padding:2px 15px;display:grid}.study-subject-actions button{border:1px solid var(--study-line);background:var(--study-surface);text-align:left;border-radius:18px;flex-direction:column;justify-content:space-between;min-height:92px;padding:14px;display:flex}@supports (color:color-mix(in srgb,red 50%,blue)){.study-subject-actions button{--cmx-4te3aw-tz:color-mix(in srgb,var(--study-surface) 92%,transparent);background:var(--cmx-4te3aw-tz)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-subject-actions button{background:color-mix(in srgb,var(--study-surface) 92%,transparent)}}.study-subject-actions button:first-child{background:linear-gradient(110deg,var(--study-surface),var(--study-surface));flex-direction:row;grid-column:1/-1;justify-content:flex-start;align-items:center;gap:14px;min-height:76px}@supports (color:color-mix(in srgb,red 50%,blue)){.study-subject-actions button:first-child{--cmx-4te3aw-u0:color-mix(in srgb,var(--subject-accent) 16%,var(--study-surface));background:linear-gradient(110deg,var(--cmx-4te3aw-u0),var(--study-surface))}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-subject-actions button:first-child{background:linear-gradient(110deg,color-mix(in srgb,var(--subject-accent) 16%,var(--study-surface)),var(--study-surface))}}.study-subject-actions svg{color:var(--subject-accent)}.study-subject-actions strong,.study-subject-actions small{display:block}.study-subject-actions strong{font-size:14px}.study-subject-actions small{color:var(--study-muted);margin-top:3px;font-size:9px}.study-counter{color:var(--study-muted);font-size:11px}.study-learn{flex:1;padding:14px 16px 28px;overflow-y:auto}.study-learn-heading{text-align:center;margin:3px 0 12px}.study-learn-heading small{letter-spacing:2px;color:var(--subject-accent);font-size:7px}.study-learn-heading p{color:var(--study-muted);margin:3px;font-size:9px}.study-learn-card{perspective:1200px;touch-action:pan-y;-webkit-user-select:none;user-select:none;width:100%;max-width:360px;min-height:495px;margin:auto;position:relative}.study-card-inner{transform-style:preserve-3d;transition:transform .3s;position:absolute;inset:0}.study-learn-card.is-flipped .study-card-inner{transform:rotateY(180deg)}.study-card-face{backface-visibility:hidden;border:1px solid var(--study-line);background:linear-gradient(150deg,var(--study-surface),var(--study-surface));text-align:center;border-radius:25px;flex-direction:column;justify-content:center;align-items:center;padding:28px 22px;display:flex;position:absolute;inset:0;overflow:auto;box-shadow:0 18px 44px #00000012}@supports (color:color-mix(in srgb,red 50%,blue)){.study-card-face{--cmx-4te3aw-u1:color-mix(in srgb,var(--subject-accent) 25%,var(--study-line));border:1px solid var(--cmx-4te3aw-u1);--cmx-4te3aw-u2:color-mix(in srgb,var(--subject-accent) 7%,var(--study-surface));background:linear-gradient(150deg,var(--cmx-4te3aw-u2),var(--study-surface));border-radius:25px}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-card-face{border:1px solid color-mix(in srgb,var(--subject-accent) 25%,var(--study-line));background:linear-gradient(150deg,color-mix(in srgb,var(--subject-accent) 7%,var(--study-surface)),var(--study-surface));border-radius:25px}}.study-card-back{transform:rotateY(180deg)}.study-card-face>small{letter-spacing:1.8px;color:var(--subject-accent);font-size:7px}.study-card-face h2{margin:12px 0 8px;font:600 24px/1.35 Noto Serif SC,serif}.study-card-face p{color:var(--study-muted);white-space:pre-wrap;font-size:12px;line-height:1.7}.study-reveal{background:var(--subject-accent);color:#fff;border:0;border-radius:18px;align-items:center;gap:6px;margin-top:18px;padding:9px 17px;display:flex}.study-reveal svg{width:15px}.study-code{white-space:pre;color:#cdd6f4;text-align:left;background:#1e1e2e;border-radius:14px;width:100%;margin:15px 0 0;padding:15px;font:11px/1.65 ui-monospace,SFMono-Regular,Consolas,monospace;overflow-x:auto}.study-code .kw{color:#cba6f7}.study-code .str{color:#a6e3a1}.study-code .com{color:#6c7086}.study-hint{color:var(--study-muted);border-radius:12px;margin:8px 0 16px;padding:9px 12px;font-size:10px}@supports (color:color-mix(in srgb,red 50%,blue)){.study-hint{--cmx-4te3aw-u3:color-mix(in srgb,var(--subject-accent) 9%,transparent);background:var(--cmx-4te3aw-u3)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-hint{background:color-mix(in srgb,var(--subject-accent) 9%,transparent)}}.study-card-actions{grid-template-columns:1fr 1fr 1fr;gap:7px;width:100%;display:grid}.study-card-actions button{border:0;border-radius:15px;padding:9px 4px;font-size:11px}.study-card-actions .no{color:#c84545;background:#ef535018}.study-card-actions .ask{background:var(--study-bg);color:var(--study-muted)}.study-card-actions .yes{color:#31833a;background:#43a04718}.study-swipe-tag{z-index:4;color:#fff;border-radius:20px;padding:4px 16px;font-size:11px;position:absolute;top:14px;left:50%;transform:translate(-50%)}.study-swipe-tag.yes{background:#43a047}.study-swipe-tag.no{background:#ef5350}.study-panel{padding:20px 15px}.study-panel>header{justify-content:space-between;align-items:end;margin-bottom:15px;display:flex}.study-panel h2{margin:4px 0 0;font-size:21px}.study-panel>header>button{background:var(--subject-accent);color:#fff;border:0;border-radius:15px;padding:7px 12px;font-size:10px}.study-filter{flex-wrap:wrap;gap:6px;margin-bottom:13px;display:flex}.study-filter button{border:1px solid var(--study-line);background:var(--study-surface);color:var(--study-muted);border-radius:14px;padding:5px 10px;font-size:9px}.study-filter button.active{border-color:var(--subject-accent);color:var(--subject-accent)}.study-mistake{border:1px solid var(--study-line);background:var(--study-surface);border-left:4px solid #ef5350;border-radius:14px;margin-bottom:10px;padding:13px 13px 10px 16px;position:relative}@supports (color:color-mix(in srgb,red 50%,blue)){.study-mistake{--cmx-4te3aw-u4:color-mix(in srgb,var(--study-surface) 92%,transparent);background:var(--cmx-4te3aw-u4)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-mistake{background:color-mix(in srgb,var(--study-surface) 92%,transparent)}}.study-mistake>div small,.study-mistake>div strong,.study-mistake>div p{margin:0;display:block}.study-mistake>div small{color:#ef5350;font-size:8px}.study-mistake>div strong{margin-top:3px;font-size:13px}.study-mistake>div p{color:var(--study-muted);margin-top:4px;font-size:8px}.study-mistake>span{color:#fff;background:#ef5350;border-radius:50%;place-items:center;min-width:20px;height:20px;font-size:9px;display:grid;position:absolute;top:12px;right:12px}.study-mistake footer{justify-content:flex-end;gap:7px;margin-top:9px;display:flex}.study-mistake footer button{background:var(--study-bg);border:0;border-radius:12px;padding:6px 9px;font-size:9px}.study-mistake footer button:last-child{color:#31833a;background:#43a04714}.study-empty{text-align:center;border:1px dashed var(--study-line);background:var(--study-surface);border-radius:20px;margin:18px 0;padding:38px 20px}@supports (color:color-mix(in srgb,red 50%,blue)){.study-empty{--cmx-4te3aw-u5:color-mix(in srgb,var(--study-surface) 74%,transparent);background:var(--cmx-4te3aw-u5)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-empty{background:color-mix(in srgb,var(--study-surface) 74%,transparent)}}.study-empty>span{width:52px;height:52px;color:var(--study-accent);border-radius:50%;place-items:center;margin:auto;display:grid}@supports (color:color-mix(in srgb,red 50%,blue)){.study-empty>span{--cmx-4te3aw-u6:color-mix(in srgb,var(--study-accent) 10%,transparent);background:var(--cmx-4te3aw-u6)}}@supports (color:color-mix(in srgb,red 50%,blue)) and (color:rgb(from red r g b)){.study-empty>span{background:color-mix(in srgb,var(--study-accent) 10%,transparent)}}.study-empty h3{margin:12px 0 5px;font-size:15px}.study-empty p{color:var(--study-muted);margin:0;font-size:10px;line-height:1.6}.study-homework-card{border:1px solid 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