@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;450;500;550;600;650;700&display=swap');
:root{--bg:#f7f7f7;--surface:#fff;--ink:#303030;--muted:#747474;--line:#ebebeb;--soft:#f1f1f1;--accent:#527463;--tint:#edf2ef;--danger:#a23f36;--radius:16px;font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:14px;line-height:1.6}button,input,select,textarea{font:inherit;color:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button{border:0;background:none}a{color:inherit;text-decoration:none}svg{width:20px;height:20px;vertical-align:middle;flex-shrink:0}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:2px solid var(--accent);outline-offset:4px}button svg{pointer-events:none}h1,h2,h3,p{margin:0}h1{font-size:36px;line-height:1.22;font-weight:550;letter-spacing:-1.4px}h2{font-size:18px;line-height:1.4;font-weight:550;letter-spacing:-.4px}h3{font-size:16px;font-weight:550;letter-spacing:-.2px}small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:10px;letter-spacing:1.5px;text-transform:uppercase;font-weight:650;color:var(--muted)}.loading{min-height:100dvh;display:grid;place-items:center;color:var(--muted)}.sidebar{position:fixed;inset:0 auto 0 0;width:224px;background:#fbfbfb;border-right:1px solid var(--line);display:flex;flex-direction:column;padding:32px 18px;z-index:20}.brand{display:flex;gap:12px;align-items:center;padding:0 16px 34px}.brand img{width:34px;height:34px}.brand strong{font-size:17px;font-weight:600;letter-spacing:-.6px}.brand small{display:block;font-size:10px;letter-spacing:1.6px;color:var(--muted);line-height:1.2}.language{margin:0 8px 30px;padding:11px 12px;display:flex;gap:11px;align-items:center;background:var(--surface);border:1px solid var(--line);border-radius:12px}.flag{display:inline-block;width:25px;height:18px;background:linear-gradient(90deg,#52806b 33.333%,#fff 33.333%,#fff 66.667%,#bc6a62 66.667%);border-radius:3px;border:1px solid #00000008}.language .label{flex:1}.language small{font-size:10px;color:var(--muted)}.nav{display:grid;gap:5px}.nav a{display:flex;gap:13px;align-items:center;padding:11px 16px;color:var(--muted);border-radius:10px;font-size:13px}.nav a.active{color:var(--ink);background:#eaecea;font-weight:550}.nav a:hover{background:var(--soft)}.nav svg{width:18px}.side-bottom{margin-top:auto;padding:22px 16px 0;color:var(--muted);font-size:12px}.side-bottom a,.side-bottom button{display:flex;gap:12px;align-items:center;padding:8px 0;font-size:12px}.main-shell{margin-left:224px}.topbar{height:82px;padding:0 48px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px}.crumb{font-size:12px;color:var(--muted);display:flex;gap:12px;align-items:center}.crumb b{font-weight:500;color:var(--ink)}.top-actions{display:flex;align-items:center;gap:20px}.search-trigger{background:#eee;border-radius:99px;display:flex;align-items:center;gap:9px;padding:8px 13px;color:var(--muted);font-size:11px}.search-trigger svg{width:15px}.search-trigger kbd{margin-left:20px;font:inherit;opacity:.65}.avatar{width:33px;height:33px;background:#e9e9e9;border-radius:50%;display:grid;place-items:center;font-size:11px;font-weight:600}.sync{font-size:10px;color:var(--muted)}.content{max-width:1200px;padding:46px 48px 64px;margin:auto}.page-intro{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;margin-bottom:30px}.page-intro .eyebrow{margin-bottom:13px}.page-intro p{color:var(--muted);font-size:13px;margin-top:13px}.date-note{text-align:right;padding-top:7px;font-size:11px;color:var(--muted)}.daily-pill{display:flex;gap:8px;align-items:center;justify-content:flex-end;color:var(--accent);margin-top:7px}.daily-pill svg{width:14px}.hero-grid{display:grid;grid-template-columns:minmax(0,1fr) 244px;gap:20px;margin:32px 0 38px}.card{background:var(--surface);border-radius:var(--radius);border:1px solid #ededed80}.continue-card{padding:28px 30px;position:relative;overflow:hidden;display:flex;gap:26px;align-items:center;min-height:238px}.continue-copy{flex:1;position:relative;z-index:1}.continue-card h2{font-size:26px;font-weight:500;line-height:1.2;letter-spacing:-.8px;margin:15px 0 9px;max-width:320px}.continue-card p{font-size:12px;color:var(--muted);max-width:360px}.lesson-meta{display:flex;gap:14px;align-items:center;color:var(--muted);font-size:11px;margin:12px 0 23px}.lesson-meta span{display:flex;gap:5px;align-items:center}.lesson-meta svg{width:13px;height:13px}.button{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:11px 20px;min-height:44px;border-radius:99px;font-size:12px;font-weight:550;white-space:nowrap;background:var(--ink);color:white}.button svg{width:16px}.button.secondary{background:var(--soft);color:var(--ink)}.button.outline{background:transparent;border:1px solid var(--line);color:var(--ink)}.button:hover{filter:brightness(.94)}.hero-art{width:140px;height:150px;position:relative;flex-shrink:0;align-self:center}.word-paper{position:absolute;top:16px;left:0;width:123px;height:140px;border:1px solid #e3e8e4;border-radius:10px;background:#f7f9f6;transform:rotate(-7deg);padding:18px 17px;box-shadow:0 4px 12px #3f594305}.word-paper:before{content:'';position:absolute;inset:0;border:1px solid #e6e6e6;border-radius:10px;background:#fafafa;transform:rotate(15deg);z-index:-1}.word-paper .word{display:block;font-family:Georgia,serif;font-size:28px;letter-spacing:-1px;margin:8px 0;color:#466651}.word-paper small{font-size:10px;color:#809082}.word-paper i{width:23px;height:3px;background:#c7d5ca;display:block;margin-top:20px;border-radius:3px}.goal-card{padding:23px 24px;display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center}.goal-ring{--pct:0%;width:100px;height:100px;border-radius:50%;background:conic-gradient(var(--accent) var(--pct),#edf0ed 0);padding:5px;margin:16px auto 10px}.goal-ring>div{background:var(--surface);border-radius:50%;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center}.goal-ring strong{font-size:25px;font-weight:500;letter-spacing:-1px}.goal-ring small{font-size:10px;color:var(--muted)}.goal-card p{font-size:11px;color:var(--muted)}.section-title{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:0 0 16px}.text-button{padding:7px 0;color:var(--muted);font-size:11px;display:inline-flex;align-items:center;gap:6px;min-height:36px}.text-button svg{width:13px}.levels-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:36px}.level-card{padding:17px 15px;text-align:left;display:flex;flex-direction:column;min-height:132px;transition:background .15s;border:1px solid var(--line);border-radius:12px;background:var(--surface)}.level-card:hover,.level-card.current{border-color:#aebfb3;background:#f0f4f0}.level-card .level-tag{display:flex;align-items:center;justify-content:space-between;font-size:21px;font-weight:500;letter-spacing:-.5px}.level-tag svg{width:14px;color:var(--accent)}.level-card small{font-size:10px;color:var(--muted);margin:4px 0 18px}.level-card .mini-progress{width:100%;height:3px;background:#e7eae7;border-radius:3px;overflow:hidden;margin-top:auto}.mini-progress i{height:100%;display:block;background:var(--accent);border-radius:3px}.level-card .count{font-size:9px;color:var(--muted);margin-top:5px}.lower-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:24px}.practice-list{padding:0 22px}.practice-row{display:flex;gap:14px;align-items:center;width:100%;text-align:left;padding:18px 0;min-height:78px}.practice-row+.practice-row{border-top:1px solid var(--line)}.practice-row .icon-box{background:#f3f4f2;width:36px;height:36px;display:grid;place-items:center;border-radius:10px;color:#66806c}.practice-row .row-copy{flex:1}.practice-row strong{display:block;font-size:12px;font-weight:550}.practice-row small{color:var(--muted);font-size:10px}.practice-row>svg{width:15px;color:var(--muted)}.phrase-card{padding:24px;display:flex;flex-direction:column;align-items:flex-start;min-height:236px}.phrase-card .eyebrow{margin-bottom:16px}.phrase-card blockquote{font-family:Georgia,serif;font-size:24px;letter-spacing:-.6px;line-height:1.4;margin:0 0 9px;color:#4b6250}.phrase-card p{font-size:11px;color:var(--muted);margin-bottom:15px}.phrase-card .audio-btn{margin-top:auto}.audio-btn{display:inline-flex;align-items:center;gap:7px;min-height:36px;padding:6px 0;font-size:11px;color:var(--accent)}.audio-btn svg{width:15px}.page-footer{display:flex;justify-content:space-between;gap:14px;color:#969696;font-size:10px;margin-top:40px}.bottom-nav{display:none}.stats-line{display:flex;gap:24px;flex-wrap:wrap;margin:28px 0}.stat{padding:20px 24px;flex:1;min-width:130px}.stat strong{display:block;font-size:26px;font-weight:500;letter-spacing:-1px}.stat small{color:var(--muted);font-size:11px}.tabs{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;padding:4px 0 20px}.tab{min-height:40px;padding:9px 18px;border-radius:99px;white-space:nowrap;color:var(--muted);font-size:12px;background:var(--surface);border:1px solid var(--line)}.tab[aria-selected=true]{background:var(--ink);color:#fff;border-color:var(--ink)}.level-intro{padding:24px 26px;margin-bottom:18px;display:flex;justify-content:space-between;gap:20px;align-items:center}.level-intro p{font-size:12px;color:var(--muted);margin-top:6px;max-width:600px}.level-big{font-size:38px;color:#bcc9bf;letter-spacing:-2px;font-weight:500}.lesson-list{overflow:hidden}.lesson-row{width:100%;display:flex;gap:18px;padding:21px 25px;align-items:center;text-align:left;min-height:91px}.lesson-row+.lesson-row{border-top:1px solid var(--line)}.lesson-row:hover{background:#fafbf9}.number{width:37px;height:37px;display:grid;place-items:center;background:var(--soft);border-radius:10px;font-size:11px;color:var(--muted);flex-shrink:0}.number.done{background:var(--tint);color:var(--accent)}.lesson-row .row-copy{flex:1;min-width:0}.lesson-row strong{display:block;font-size:13px;font-weight:550}.lesson-row small{display:block;color:var(--muted);font-size:11px;margin-top:3px}.lesson-row .time{font-size:10px;color:var(--muted);white-space:nowrap}.lesson-row>svg{width:15px;color:var(--muted)}.back-button{display:flex;align-items:center;gap:7px;min-height:44px;color:var(--muted);font-size:11px;margin-bottom:18px;padding:0}.back-button svg{width:15px}.study{max-width:780px;margin:auto}.study-header .eyebrow{margin-bottom:10px}.study-header h1{font-size:31px}.study-header p{font-size:13px;color:var(--muted);margin-top:12px}.study-progress{display:flex;gap:6px;margin:28px 0 10px}.study-progress i{height:3px;flex:1;border-radius:5px;background:#e2e5e1}.study-progress i.active{background:var(--accent)}.step-label{font-size:10px;color:var(--muted);margin-bottom:22px}.study-body{padding:30px}.study-body h2{margin-bottom:17px;font-size:20px}.study-body .rule{font-size:15px;line-height:1.95;white-space:pre-line}.tip{padding:16px 18px;background:#f4f6f3;border-radius:10px;font-size:12px;line-height:1.8;margin-top:23px;color:#5d6c60}.tip strong{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.8px;margin-bottom:4px}.examples{display:grid;gap:0}.example{padding:20px 0;border-bottom:1px solid var(--line)}.example:first-child{padding-top:0}.example:last-child{border:0;padding-bottom:0}.example-line{display:flex;justify-content:space-between;gap:16px;align-items:flex-start}.example .it{font-size:19px;line-height:1.6;letter-spacing:-.2px}.example .pt{font-size:12px;color:var(--muted);margin-top:6px}.icon-button{display:grid;place-items:center;min-width:36px;min-height:36px;border-radius:50%;color:var(--accent);background:#f3f5f2}.icon-button svg{width:17px}.vocab-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}.vocab-chip{padding:8px 11px;background:var(--soft);border-radius:8px;font-size:11px}.vocab-chip span{color:var(--muted);margin-left:5px}.study-controls{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:22px}.study-controls .button{min-width:130px}.question-counter{color:var(--muted);font-size:11px;margin-bottom:17px}.question-title{font-size:20px;line-height:1.6;margin-bottom:22px}.choices{display:grid;gap:10px}.choice{display:flex;align-items:center;gap:13px;text-align:left;width:100%;padding:14px 16px;min-height:54px;border:1px solid var(--line);border-radius:10px;font-size:14px;background:var(--surface)}.choice .letter{font-size:10px;width:23px;height:23px;border:1px solid var(--line);border-radius:6px;display:grid;place-items:center;color:var(--muted)}.choice.selected{border-color:var(--accent);background:var(--tint)}.choice.correct{border-color:#91aa95;background:#eef5ef}.choice.incorrect{border-color:#d6aaa5;background:#fbf1ef}.choice:disabled{opacity:1}.feedback{padding:15px 17px;border-radius:10px;background:var(--tint);margin-top:20px;font-size:12px;line-height:1.8}.feedback.wrong{background:#fbf1ef}.feedback strong{display:block;margin-bottom:3px}.answer-input,.field-input,.writing{width:100%;background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:15px;font-size:16px;min-width:0}.writing{min-height:180px;line-height:1.8;resize:vertical}.writing-prompt{color:var(--muted);font-size:13px;line-height:1.8;margin-bottom:18px}.checklist{display:grid;gap:12px;margin:20px 0}.checklist label{display:flex;gap:10px;align-items:flex-start;font-size:12px}.checklist input{accent-color:var(--accent);margin:4px 0}.completion{text-align:center;padding:40px 30px}.completion .success-icon{width:60px;height:60px;background:var(--tint);color:var(--accent);display:grid;place-items:center;border-radius:50%;margin:0 auto 24px}.completion h2{font-size:28px;margin-bottom:10px}.completion p{color:var(--muted);font-size:13px}.score-line{display:flex;justify-content:center;gap:30px;margin:27px 0}.score-line strong{font-size:23px;display:block;font-weight:500}.score-line small{color:var(--muted);font-size:10px}.review-wrap{max-width:650px;margin:auto}.flashcard{padding:40px;text-align:center;min-height:300px;display:flex;flex-direction:column;align-items:center;justify-content:center}.flashcard .it{font-size:35px;letter-spacing:-1px;margin:20px 0}.flashcard .translation{font-size:18px;color:var(--muted);margin:6px 0 20px}.review-actions{display:flex;gap:10px;justify-content:center;margin-top:20px}.empty{padding:40px 28px;text-align:center}.empty svg{width:32px;height:32px;color:#91a094;margin-bottom:20px}.empty h2{margin-bottom:10px}.empty p{max-width:450px;margin:0 auto 23px;color:var(--muted);font-size:13px}.search-input{width:100%;border:1px solid var(--line);background:var(--surface);border-radius:10px;padding:13px 15px;margin-bottom:20px;font-size:16px}.notebook-item{padding:24px;margin-bottom:14px}.notebook-item header{display:flex;justify-content:space-between;gap:16px;margin-bottom:12px}.notebook-item h3{font-size:13px}.notebook-item small{color:var(--muted);font-size:10px}.notebook-item p{font-size:14px;white-space:pre-wrap}.notebook-item textarea{margin-top:12px}.bar-chart{display:flex;align-items:flex-end;gap:12px;height:140px;margin:25px 0 10px}.bar-col{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:8px}.bar-col i{display:block;width:100%;max-width:40px;background:#a6baa9;border-radius:5px 5px 2px 2px;min-height:3px}.bar-col small{font-size:10px;color:var(--muted)}.progress-card{padding:24px;margin-top:20px}.level-progress-row{display:flex;gap:16px;align-items:center;margin-top:22px;font-size:11px}.level-progress-row strong{width:25px;font-weight:500}.level-progress-row .mini-progress{height:4px;flex:1;background:var(--soft);border-radius:4px;overflow:hidden}.level-progress-row small{color:var(--muted);width:55px;text-align:right}.settings-grid{display:grid;gap:20px}.setting-row{display:flex;justify-content:space-between;align-items:center;gap:20px}.setting-row select{padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--surface)}dialog{border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--ink);padding:28px;max-width:540px;width:calc(100% - 32px);max-height:85dvh;box-shadow:0 20px 80px #00000015}dialog::backdrop{background:#20252030;backdrop-filter:blur(3px)}.modal-heading{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:22px}.modal-heading h2{font-size:19px}.modal-heading button{width:32px;height:32px;border-radius:50%;background:var(--soft)}.modal-results{max-height:50dvh;overflow:auto}.modal-results button{display:block;width:100%;text-align:left;padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}.modal-results small{display:block;color:var(--muted);font-size:10px}.login-shell{min-height:100dvh;display:grid;place-items:center;padding:24px}.login-card{background:var(--surface);border-radius:16px;padding:36px;width:100%;max-width:360px;text-align:center}.login-card img{width:44px;height:44px;margin-bottom:18px}.login-card h1{font-size:21px;letter-spacing:-.6px}.login-card p{font-size:12px;color:var(--muted);margin:8px 0 25px}.login-card form{display:grid;gap:18px}.password-field{display:flex;align-items:center;background:var(--soft);border-radius:12px;padding:0 14px}.password-field input{width:100%;border:0;background:transparent;padding:13px 8px;font-size:16px;min-width:0;outline:0}.password-field:focus-within{outline:2px solid #777;outline-offset:3px}.password-field button{padding:5px;color:#888}.login-card .remember{font-size:11px;display:flex;gap:8px;align-items:flex-start;text-align:left;color:var(--muted)}.remember input{accent-color:var(--ink)}.login-card .button{width:100%}.login-error{color:var(--danger);font-size:12px;text-align:left}.login-note{font-size:10px;color:var(--muted);margin-top:22px}.offline-banner{padding:10px 16px;background:#f7f0e4;font-size:11px;text-align:center}#toast{position:fixed;bottom:26px;left:calc(50% + 112px);transform:translateX(-50%);background:#303030;color:#fff;padding:11px 20px;border-radius:99px;font-size:12px;z-index:100;max-width:calc(100% - 30px);text-align:center;opacity:0;pointer-events:none;transition:opacity .2s}#toast.visible{opacity:1}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}body[data-theme=dark]{--bg:#191b19;--surface:#222522;--ink:#e1e6df;--muted:#a4aca1;--line:#353b34;--soft:#30362f;--accent:#a6c3a6;--tint:#2b3b2c}body[data-theme=dark] .sidebar{background:#1d201d}body[data-theme=dark] .nav a.active{background:#31392f}body[data-theme=dark] .topbar{background:var(--bg)}body[data-theme=dark] .level-card.current,body[data-theme=dark] .tip{background:#2b342b;color:#bfcebc}body[data-theme=dark] .lesson-row:hover{background:#293029}body[data-theme=dark] .card{border-color:var(--line)}body[data-theme=dark] .word-paper{background:#2b342b;border-color:#4c594b}body[data-theme=dark] .word-paper:before{background:#343b31;border-color:#4c594b}body[data-theme=dark] .word-paper .word,body[data-theme=dark] .phrase-card blockquote{color:#b4c7ae}
@media(min-width:1500px){.content{padding-top:55px}.hero-grid{grid-template-columns:minmax(0,1fr) 270px}.continue-card{min-height:260px}.hero-art{margin-right:15px}}
@media(max-width:1100px){.sidebar{width:190px;padding-left:12px;padding-right:12px}.main-shell{margin-left:190px}.content{padding:34px 28px 50px}.topbar{padding:0 28px}.hero-grid{grid-template-columns:minmax(0,1fr) 195px;gap:14px}.continue-card{padding:25px}.hero-art{width:100px;transform:scale(.85);transform-origin:center}.level-card{padding:14px 10px}.levels-grid{gap:7px}.continue-card h2{font-size:23px}#toast{left:calc(50% + 95px)}}
@media(max-width:800px){.sidebar{width:160px;padding:25px 10px}.brand{padding:0 10px 28px;gap:8px}.brand strong{font-size:16px}.brand img{width:28px}.nav a{padding:11px 12px;gap:10px}.main-shell{margin-left:160px}.topbar{padding:0 24px;height:70px}.content{padding:30px 24px 40px}.hero-grid{grid-template-columns:1fr}.goal-card{display:none}.levels-grid{grid-template-columns:repeat(3,1fr)}.level-card{min-height:112px}.level-card small{margin-bottom:12px}.lower-grid{grid-template-columns:1fr}.date-note{display:none}.search-trigger kbd{display:none}.sync{display:none}.hero-art{margin-right:12px;width:120px}#toast{left:calc(50% + 80px)}}
@media(max-width:600px){body{font-size:14px}.sidebar{display:none}.main-shell{margin-left:0}.topbar{height:68px;padding:0 22px;border-bottom:0}.crumb{font-size:12px}.crumb:before{content:'';width:25px;height:25px;background:url('/icon.svg') center/contain no-repeat;margin-right:2px}.crumb>span:first-child,.crumb>span:nth-child(2){display:none}.top-actions{gap:14px}.search-trigger{padding:8px;background:transparent}.search-trigger span{display:none}.avatar{width:30px;height:30px}.content{padding:19px 22px 105px}.page-intro{margin-bottom:24px}.page-intro .eyebrow{font-size:9px;margin-bottom:12px}h1{font-size:32px;letter-spacing:-1.2px;line-height:1.25}.page-intro p{font-size:12px;margin-top:12px;max-width:280px;line-height:1.8}.hero-grid{margin:25px 0 30px}.continue-card{padding:24px;min-height:246px;gap:0}.continue-card h2{font-size:24px;max-width:240px;margin-top:14px}.continue-card p{font-size:11px;max-width:220px}.continue-card .eyebrow{font-size:9px}.hero-art{position:absolute;right:-22px;top:48px;width:100px;opacity:.65;transform:rotate(8deg) scale(.77);z-index:0}.continue-copy{z-index:1}.continue-card .button{font-size:11px;padding:10px 17px}.lesson-meta{font-size:10px;gap:12px;margin-bottom:22px}.section-title{margin-bottom:13px}.section-title h2{font-size:16px}.section-title .text-button{font-size:10px}.levels-grid{gap:8px;margin-bottom:29px}.level-card{padding:14px;min-height:114px}.level-card .level-tag{font-size:22px}.level-card small{font-size:10px;margin-bottom:12px}.level-card .count{font-size:9px}.lower-grid{gap:28px}.practice-list{padding:0 20px}.practice-row{min-height:79px;padding:16px 0}.practice-row strong{font-size:12px}.practice-row small{font-size:10px}.phrase-card{padding:23px;min-height:218px}.phrase-card blockquote{font-size:25px;max-width:240px}.page-footer{font-size:9px;margin-top:28px;flex-wrap:wrap}.bottom-nav{display:flex;position:fixed;inset:auto 0 0;z-index:30;background:#ffffffed;border-top:1px solid var(--line);backdrop-filter:blur(12px);padding:8px 8px max(9px,env(safe-area-inset-bottom));justify-content:space-around}.bottom-nav a{min-width:62px;min-height:48px;display:flex;gap:4px;flex-direction:column;align-items:center;justify-content:center;color:#929892;font-size:9px;border-radius:10px}.bottom-nav a.active{color:var(--ink);background:#edf0eb}.bottom-nav a svg{width:19px;height:19px}.tabs{margin-right:-22px;padding-right:22px;gap:7px}.tab{font-size:11px;padding:8px 17px;min-height:38px}.level-intro{padding:21px}.level-big{font-size:32px}.level-intro h2{font-size:17px}.level-intro p{font-size:11px}.lesson-row{padding:18px 17px;gap:13px}.lesson-row strong{font-size:12px}.lesson-row small{font-size:10px;line-height:1.6}.lesson-row .time{display:none}.lesson-row>svg{width:13px}.number{width:32px;height:32px;font-size:10px}.study-header h1{font-size:28px}.study-header p{font-size:12px}.study-body{padding:23px}.study-body .rule{font-size:14px;line-height:1.9}.study-body h2{font-size:19px}.tip{padding:15px;font-size:11px}.example .it{font-size:17px}.example .pt{font-size:11px}.study-controls{gap:8px}.study-controls .button{min-width:110px;padding:11px 15px;font-size:11px}.question-title{font-size:18px}.choice{font-size:13px;padding:13px;gap:10px}.completion{padding:32px 20px}.completion h2{font-size:25px}.stats-line{gap:10px;margin:20px 0}.stat{padding:17px;min-width:calc(50% - 6px)}.stat strong{font-size:25px}.stat small{font-size:10px}.flashcard{padding:30px 20px}.flashcard .it{font-size:29px}.review-actions .button{flex:1;padding:11px 14px}.notebook-item{padding:20px}.progress-card{padding:20px}.bar-chart{gap:9px}.setting-row{align-items:flex-start}.setting-row select{font-size:12px;max-width:150px}.setting-row p{font-size:11px}.sync{display:none}#toast{left:50%;bottom:92px;width:max-content;font-size:11px}dialog{padding:23px}body[data-theme=dark] .bottom-nav{background:#222522ed}body[data-theme=dark] .bottom-nav a.active{background:#354031}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}
.language{text-align:left}.choice[aria-pressed=true]{border-color:var(--accent);background:var(--tint)}
@media(max-width:600px){.bottom-nav a{min-width:0;flex:1}.icon-button{min-width:44px;min-height:44px}}