:root{--bg: #f2f4f3;--surface: #ffffff;--surface-2: #e9edeb;--ink: #17252d;--muted: #5b6970;--line: #d9e0dd;--accent: #1f5f6e;--accent-soft: #dceaec;--danger: #b2452e;--danger-soft: #f6e3de;--warn: #b97a1e;--ok: #2f7d5b;--ok-soft: #dfeee6;--lv-new: #98a3aa;--lv-learning: #c98a2b;--lv-familiar: #7d9a3b;--lv-good: #3c8b68;--lv-mastered: #1d5948;--serif: "Literata", "Georgia", "Times New Roman", serif;--sans: "Onest", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;--r-sm: 6px;--r-md: 10px;--r-lg: 16px;--shadow: 0 1px 2px rgba(23, 37, 45, .06), 0 6px 24px -12px rgba(23, 37, 45, .18);--sidebar: 232px;box-sizing:border-box;padding-top:env(safe-area-inset-top,0px)}*,*:before,*:after{box-sizing:inherit}html,body{margin:0}body{background:var(--bg);color:var(--ink);font:400 16px/1.5 var(--sans);-webkit-font-smoothing:antialiased}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}@media (prefers-reduced-motion: reduce){*,*:before,*:after{transition:none!important;animation:none!important}}h1,h2,h3{margin:0;line-height:1.2;font-weight:600}h1{font-size:1.75rem;letter-spacing:-.01em}h2{font-size:1.2rem}h3{font-size:1rem}p{margin:0}.muted{color:var(--muted)}.small{font-size:.875rem}.serif{font-family:var(--serif)}.num{font-variant-numeric:tabular-nums}.shell{min-height:100vh;display:grid;grid-template-columns:var(--sidebar) 1fr}.sidebar{position:sticky;top:env(safe-area-inset-top,0px);height:100vh;padding:24px 14px;border-right:1px solid var(--line);background:var(--bg);display:flex;flex-direction:column;gap:4px}.brand{display:flex;align-items:center;gap:10px;padding:0 10px 22px;font:600 1.15rem var(--serif);color:var(--ink)}.brand:hover{text-decoration:none}.nav-link{display:flex;align-items:center;gap:12px;padding:9px 10px;border-radius:var(--r-md);color:var(--muted);font-weight:500}.nav-link svg{width:18px;height:18px;flex:none}.nav-link:hover{background:var(--surface-2);color:var(--ink);text-decoration:none}.nav-link.active{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}.sidebar-foot{margin-top:auto;padding:12px 10px 0;border-top:1px solid var(--line);font-size:.875rem}.main{min-width:0;padding:28px clamp(16px,4vw,48px) 64px}.topbar{display:flex;align-items:center;gap:12px;margin-bottom:28px}.topbar .search{flex:1;max-width:420px;margin-left:auto}.page{max-width:1080px;margin:0 auto}.page-head{display:flex;flex-wrap:wrap;align-items:end;justify-content:space-between;gap:12px 24px;margin-bottom:24px}.page-head p{margin-top:6px}.tabbar{display:none}@media (max-width: 860px){.shell{grid-template-columns:1fr}.sidebar{display:none}.main{padding:16px 16px calc(84px + env(safe-area-inset-bottom,0px))}.topbar{margin-bottom:18px}.tabbar{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;position:fixed;left:0;right:0;bottom:0;z-index:20;padding:6px 4px calc(6px + env(safe-area-inset-bottom,0px));background:#fffffff0;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-top:1px solid var(--line)}.tabbar .nav-link{flex-direction:column;gap:2px;padding:6px 2px;font-size:.7rem;justify-content:center}.tabbar .nav-link.active{box-shadow:none;background:none;color:var(--accent)}h1{font-size:1.45rem}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:40px;padding:0 16px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);color:var(--ink);font:500 .95rem var(--sans);cursor:pointer;transition:background .15s,border-color .15s,transform .05s}.btn:hover{border-color:#b8c3bf;text-decoration:none}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn.primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn.primary:hover{background:#184e5b}.btn.ghost{background:transparent;border-color:transparent;color:var(--muted)}.btn.ghost:hover{background:var(--surface-2);color:var(--ink)}.btn.danger{color:var(--danger)}.btn.big{min-height:56px;padding:0 28px;font-size:1.05rem;border-radius:var(--r-lg)}.btn.small{min-height:32px;padding:0 10px;font-size:.85rem}.btn.icon{width:40px;padding:0}.row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.stack{display:flex;flex-direction:column;gap:16px}.spacer{flex:1}.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);padding:20px}.panel-head{display:flex;align-items:baseline;justify-content:space-between;gap:12px;margin-bottom:14px}.grid{display:grid;gap:16px}.grid.two{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid.three{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}label.field{display:flex;flex-direction:column;gap:6px;font-size:.875rem;font-weight:500}input,textarea,select{width:100%;min-height:40px;padding:8px 12px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);color:var(--ink);font:400 1rem var(--sans)}textarea{min-height:96px;resize:vertical}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}.error-note{padding:10px 14px;border-radius:var(--r-md);background:var(--danger-soft);color:var(--danger);font-size:.9rem}.ok-note{padding:10px 14px;border-radius:var(--r-md);background:var(--ok-soft);color:var(--ok);font-size:.9rem}.segmented{display:inline-flex;padding:3px;gap:2px;background:var(--surface-2);border-radius:var(--r-md);flex-wrap:wrap}.segmented button{border:0;background:transparent;padding:6px 12px;border-radius:7px;font:500 .875rem var(--sans);color:var(--muted);cursor:pointer}.segmented button[aria-pressed=true]{background:var(--surface);color:var(--ink);box-shadow:var(--shadow)}.segmented .count{margin-left:6px;color:var(--muted);font-variant-numeric:tabular-nums}.badge{display:inline-flex;align-items:center;gap:6px;font-size:.8rem;font-weight:500;color:var(--muted);white-space:nowrap}.badge .dot{width:8px;height:8px;border-radius:50%;background:currentColor}.lv-0{color:var(--lv-new)}.lv-1{color:var(--lv-learning)}.lv-2{color:var(--lv-familiar)}.lv-3{color:var(--lv-good)}.lv-4{color:var(--lv-mastered)}.lv-bg-0{background:var(--lv-new)}.lv-bg-1{background:var(--lv-learning)}.lv-bg-2{background:var(--lv-familiar)}.lv-bg-3{background:var(--lv-good)}.lv-bg-4{background:var(--lv-mastered)}.bar{height:6px;border-radius:3px;background:var(--surface-2);overflow:hidden}.bar>span{display:block;height:100%;background:var(--accent);border-radius:3px;transition:width .3s}.levels-bar{display:flex;height:10px;border-radius:5px;overflow:hidden;background:var(--surface-2);gap:2px}.levels-bar span{height:100%}.legend{display:flex;flex-wrap:wrap;gap:6px 16px;margin-top:10px}.speak{display:inline-grid;place-items:center;width:32px;height:32px;border-radius:50%;border:1px solid var(--line);background:var(--surface);color:var(--accent);cursor:pointer;flex:none}.speak:hover{background:var(--accent-soft)}.speak svg{width:16px;height:16px}.speak.lg{width:48px;height:48px}.speak.lg svg{width:22px;height:22px}.empty{padding:40px 20px;text-align:center;color:var(--muted)}.empty h3{color:var(--ink);margin-bottom:6px}.empty .btn{margin-top:16px}.loader{padding:48px;text-align:center;color:var(--muted)}table.list{width:100%;border-collapse:collapse;font-size:.95rem}table.list th{text-align:left;font-size:.8rem;font-weight:500;color:var(--muted);padding:0 12px 8px;border-bottom:1px solid var(--line)}table.list td{padding:12px;border-bottom:1px solid var(--line);vertical-align:middle}table.list tr:last-child td{border-bottom:0}.table-wrap{overflow-x:auto}.today{display:grid;grid-template-columns:1.4fr 1fr;gap:16px;margin-bottom:16px}@media (max-width: 860px){.today{grid-template-columns:1fr}}.today-main{display:flex;flex-direction:column;justify-content:space-between;gap:24px;padding:28px;background:var(--ink);color:#fff;border:0}.today-main .muted{color:#a9b7bd}.today-counts{display:flex;gap:32px;flex-wrap:wrap}.today-count b{display:block;font:600 2.6rem/1 var(--serif);font-variant-numeric:tabular-nums}.today-count span{display:flex;align-items:center;gap:6px;margin-top:6px;font-size:.9rem;color:#c9d4d8}.today-count i{width:8px;height:8px;border-radius:50%}.today-main .btn.primary{background:#fff;color:var(--ink);border-color:#fff;align-self:flex-start}.today-main .btn.primary:hover{background:#e8eeec}.streak{display:flex;flex-direction:column;gap:14px}.streak-num{display:flex;align-items:baseline;gap:10px}.streak-num b{font:600 2.2rem/1 var(--serif)}.week{display:grid;grid-template-columns:repeat(7,1fr);gap:6px}.week div{height:30px;border-radius:6px;background:var(--surface-2);display:grid;place-items:center;font-size:.7rem;color:var(--muted)}.week div.met{background:var(--accent);color:#fff}.week div.part{background:var(--accent-soft);color:var(--accent)}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;margin-bottom:16px}.stat{background:var(--surface);padding:16px 18px}.stat b{display:block;font:600 1.6rem/1.1 var(--sans);font-variant-numeric:tabular-nums}.stat span{font-size:.85rem;color:var(--muted)}.set-card{display:flex;flex-direction:column;gap:10px;padding:18px;color:inherit}.set-card:hover{text-decoration:none;border-color:#b8c3bf}.set-card h3{font:600 1.1rem var(--serif)}.assignment{display:flex;align-items:center;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}.assignment:last-child{border-bottom:0}.assignment .grow{flex:1;min-width:0}.entry{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 16px;padding:14px 0;border-bottom:1px solid var(--line)}.entry:last-child{border-bottom:0}.entry-head{display:flex;align-items:baseline;gap:10px;flex-wrap:wrap}.headword{font:600 1.15rem var(--serif)}.pos{font:italic 400 .9rem var(--serif);color:var(--muted)}.entry .gloss{color:var(--ink)}.entry .ex{font:italic 400 .95rem var(--serif);color:var(--muted)}.entry-side{display:flex;flex-direction:column;align-items:flex-end;gap:6px;text-align:right}.study{max-width:720px;margin:0 auto}.study-top{display:flex;align-items:center;gap:14px;margin-bottom:24px}.study-top .bar{flex:1}.exercise-label{font-size:.85rem;color:var(--muted);margin-bottom:10px}.card-scene{perspective:1600px}.flashcard{position:relative;width:100%;min-height:360px;cursor:pointer;border:0;padding:0;background:none;transform-style:preserve-3d;transition:transform .45s cubic-bezier(.3,.7,.3,1);font:inherit;color:inherit;text-align:left}.flashcard.flipped{transform:rotateY(180deg)}.face{position:absolute;top:0;right:0;bottom:0;left:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;background:var(--surface);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:clamp(24px,5vw,44px);display:flex;flex-direction:column}.face.back{transform:rotateY(180deg)}.face .rule{border-top:1px solid var(--line);margin:18px 0}.card-word{font:600 clamp(2.2rem,7vw,3.6rem)/1.05 var(--serif);letter-spacing:-.01em;overflow-wrap:anywhere}.card-meta{display:flex;align-items:center;gap:12px;margin-top:14px}.card-hint{margin-top:auto;font-size:.85rem;color:var(--muted)}.card-translation{font:600 clamp(1.6rem,5vw,2.3rem)/1.15 var(--sans)}.card-example{font:italic 400 1.15rem/1.5 var(--serif)}.card-example mark,.sentence mark{background:none;color:var(--accent);font-weight:600;border-bottom:2px solid var(--accent-soft)}.card-extra{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;font-size:.92rem;margin-top:auto;padding-top:18px}.card-extra dt{color:var(--muted)}.card-extra dd{margin:0}.card-image{max-height:120px;border-radius:var(--r-md);object-fit:cover;align-self:flex-start;margin-top:12px}.grades{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}.grades .btn{flex-direction:column;gap:0;min-height:60px;line-height:1.2}.grades .btn small{color:var(--muted);font-weight:400;font-size:.75rem}.grades .again{border-color:#e2b9ae}.grades .again:hover{background:var(--danger-soft)}.grades .easy{border-color:#a9cdb9}.grades .easy:hover{background:var(--ok-soft)}kbd{font:500 .7rem var(--sans);padding:1px 5px;border:1px solid var(--line);border-radius:4px;color:var(--muted)}.task{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:clamp(22px,5vw,40px);box-shadow:var(--shadow)}.prompt{font:600 clamp(1.8rem,6vw,2.8rem)/1.1 var(--serif);overflow-wrap:anywhere}.prompt.ru{font-family:var(--sans);font-size:clamp(1.5rem,5vw,2.2rem)}.sentence{font:400 clamp(1.15rem,3.5vw,1.45rem)/1.6 var(--serif)}.gap{display:inline-block;min-width:5ch;border-bottom:2px solid var(--ink)}.options{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:28px}@media (max-width: 560px){.options{grid-template-columns:1fr}}.option{display:flex;align-items:center;gap:12px;min-height:56px;padding:12px 16px;text-align:left;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);font:500 1rem var(--sans);color:var(--ink);cursor:pointer}.option:hover:not(:disabled){border-color:var(--accent);background:var(--accent-soft)}.option kbd{flex:none}.option.correct{border-color:var(--ok);background:var(--ok-soft)}.option.wrong{border-color:var(--danger);background:var(--danger-soft)}.option:disabled{cursor:default}.answer-row{display:flex;gap:10px;margin-top:28px}.answer-row input{font-size:1.15rem;min-height:52px}.answer-row input.correct{border-color:var(--ok);background:var(--ok-soft)}.answer-row input.wrong{border-color:var(--danger);background:var(--danger-soft)}.feedback{margin-top:16px;padding:16px 18px;border-radius:var(--r-lg);display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px}.feedback.good{background:var(--ok-soft)}.feedback.bad{background:var(--danger-soft)}.feedback.near{background:#f6ecd9}.feedback .verdict{font-weight:600}.feedback .grow{flex:1;min-width:200px}.matching{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.matching .col{display:flex;flex-direction:column;gap:8px}.match-item{min-height:52px;padding:10px 14px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);font:500 .98rem var(--sans);text-align:left;cursor:pointer;color:var(--ink)}.match-item.en{font-family:var(--serif);font-weight:600}.match-item.selected{border-color:var(--accent);background:var(--accent-soft)}.match-item.done{opacity:.35;cursor:default;border-style:dashed}.match-item.miss{border-color:var(--danger);background:var(--danger-soft)}.summary{text-align:center;padding:40px 24px}.summary .big{font:600 3.4rem/1 var(--serif);margin:18px 0 6px}.chart svg{width:100%;height:auto;display:block;overflow:visible}.chart text{font:400 11px var(--sans);fill:var(--muted)}.word-table{width:100%;border-collapse:separate;border-spacing:0 6px;min-width:860px}.word-table th{text-align:left;font-size:.78rem;font-weight:500;color:var(--muted);padding:0 6px}.word-table td{padding:0 3px;vertical-align:top}.word-table input{min-height:38px;font-size:.92rem;padding:6px 9px}.word-table td.n{width:28px;color:var(--muted);font-size:.8rem;padding-top:10px;text-align:right}.word-table details{font-size:.85rem}.auth{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-box{width:100%;max-width:400px}.auth-box .brand{padding:0 0 28px;justify-content:center;font-size:1.4rem}.auth-intro{font:italic 400 1.05rem/1.5 var(--serif);color:var(--muted);text-align:center;margin:-14px 0 26px}.role-pick{display:grid;grid-template-columns:1fr 1fr;gap:8px}.role-pick button{padding:12px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);cursor:pointer;font:500 .95rem var(--sans);text-align:left;color:var(--ink)}.role-pick button span{display:block;font-weight:400;font-size:.8rem;color:var(--muted)}.role-pick button[aria-pressed=true]{border-color:var(--accent);background:var(--accent-soft)}.modal-back{position:fixed;top:0;right:0;bottom:0;left:0;background:#17252d66;display:grid;place-items:center;padding:16px;z-index:50}.modal{width:100%;max-width:520px;max-height:90vh;overflow:auto;background:var(--surface);border-radius:var(--r-lg);padding:24px;box-shadow:0 20px 60px -20px #0006}.modal h2{margin-bottom:16px}.mode-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:8px}.mode{padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-md);background:var(--surface);text-align:left;cursor:pointer;color:var(--ink);font:500 .95rem var(--sans)}.mode span{display:block;font-weight:400;font-size:.8rem;color:var(--muted);margin-top:2px}.mode:hover{border-color:var(--accent);text-decoration:none}.mode.primary{background:var(--accent);border-color:var(--accent);color:#fff}.mode.primary span{color:#cfe3e6}.mobile-only{display:none}@media (max-width: 860px){.mobile-only{display:inline-flex}.topbar .search{margin-left:0}}