:root{--bg:#f7f7f5;--surface:#fff;--text:#1b1b1f;--muted:#6b6b76;--border:#e4e4e0;--accent:#2f5fe0;--accent-text:#fff;--danger:#c93636;--radius:16px;--nav-h:64px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}:root:not([data-theme=light]){--bg:#121214;--surface:#1c1c20;--text:#ececf0;--muted:#9a9aa6;--border:#2c2c32;--accent:#6b8cff;--accent-text:#0b0b10;--danger:#ff7a7a}}:root[data-theme=dark]{--bg:#121214;--surface:#1c1c20;--text:#ececf0;--muted:#9a9aa6;--border:#2c2c32;--accent:#6b8cff;--accent-text:#0b0b10;--danger:#ff7a7a;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}:root[data-theme=light]{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html,body{background:var(--bg);color:var(--text);margin:0}body{-webkit-text-size-adjust:100%;font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,sans-serif}h1{margin:0 0 16px;font-size:1.75rem}p{margin:0 0 8px}.screen{max-width:560px;padding:calc(20px + env(safe-area-inset-top)) 16px calc(var(--nav-h) + env(safe-area-inset-bottom) + 24px);margin:0 auto;animation:.18s ease-out fade}@keyframes fade{0%{opacity:0;transform:translateY(4px)}}@media (prefers-reduced-motion:reduce){.screen{animation:none}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:16px;padding:16px}.muted{color:var(--muted)}.email{word-break:break-all;font-weight:600}.error{color:var(--danger)}.bottom-nav{background:var(--surface);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom);display:flex;position:fixed;inset:auto 0 0}.nav-item{min-height:var(--nav-h);color:var(--muted);flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;font-size:.75rem;text-decoration:none;display:flex}.nav-item[aria-current=page]{color:var(--accent);font-weight:600}.nav-item:focus-visible,.segmented button:focus-visible{outline:2px solid var(--accent);outline-offset:-2px}.segmented{background:var(--bg);border-radius:12px;gap:4px;padding:4px;display:flex}.segmented button{min-height:44px;color:var(--text);font:inherit;background:0 0;border:0;border-radius:9px;flex:1;transition:background .15s}.segmented button[aria-pressed=true]{background:var(--accent);color:var(--accent-text)}.page-head{justify-content:space-between;align-items:center;gap:12px;display:flex}.icon-btn{width:44px;height:44px;color:var(--muted);border-radius:12px;place-items:center;margin-bottom:16px;display:grid}.back{min-height:44px;color:var(--accent);margin-top:-16px;line-height:44px;text-decoration:none;display:inline-block}.block{display:block}.streak-card{justify-content:space-between;align-items:center;gap:12px;display:flex}.streak-main{align-items:center;gap:12px;display:flex}.flame{font-size:2.5rem;line-height:1}.streak-num{font-size:2rem;font-weight:700;line-height:1.1}.streak-num small{color:var(--muted);font-size:1rem;font-weight:500}.goal-card{align-items:center;gap:16px;display:flex}.goal-title{font-size:1.1rem;font-weight:600}.ring{flex:none;width:120px;height:120px;position:relative}.ring-track{fill:none;stroke:var(--border);stroke-width:10px}.ring-bar{fill:none;stroke:var(--accent);stroke-width:10px;stroke-linecap:round;transition:stroke-dashoffset .5s}.ring-label{flex-direction:column;justify-content:center;align-items:center;line-height:1.1;display:flex;position:absolute;inset:0}.ring-label strong{font-size:1.6rem}.ring-label span{color:var(--muted);font-size:.85rem}.btn{width:100%;min-height:52px;font:inherit;border:0;border-radius:14px;justify-content:center;align-items:center;margin-bottom:12px;font-weight:600;text-decoration:none;transition:transform .1s;display:flex}.btn:active{transform:scale(.98)}.btn.primary{background:var(--accent);color:var(--accent-text)}.btn.ghost{color:var(--muted);border:1px dashed var(--border);background:0 0}.row{justify-content:space-between;align-items:center;gap:12px;min-height:56px;display:flex}.row+.row{border-top:1px solid var(--border)}.stepper{align-items:center;gap:4px;display:flex}.stepper button{border:1px solid var(--border);background:var(--bg);width:44px;height:44px;color:var(--text);border-radius:12px;font-size:1.25rem}.stepper button:disabled{opacity:.35}.stepper output{text-align:center;min-width:44px;font-weight:600}input[role=switch]{appearance:none;background:var(--border);border-radius:16px;flex:none;width:52px;height:32px;margin:0;transition:background .15s;position:relative}input[role=switch]:after{content:"";background:#fff;border-radius:50%;width:26px;height:26px;transition:transform .15s;position:absolute;top:3px;left:3px}input[role=switch]:checked{background:var(--accent)}input[role=switch]:checked:after{transform:translate(20px)}input[role=switch]:focus-visible,.btn:focus-visible,.stepper button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}@media (prefers-reduced-motion:reduce){.ring-bar,.btn,input[role=switch]:after{transition:none}}.menu-item{color:inherit;flex-direction:column;justify-content:center;gap:2px;min-height:64px;text-decoration:none;display:flex}.menu-item.disabled{opacity:.55}.badge{background:var(--accent);color:var(--accent-text);vertical-align:middle;border-radius:999px;padding:2px 8px;font-size:.7rem;font-weight:600;display:inline-block}.session-head{align-items:center;gap:12px;margin-bottom:8px;display:flex}.session-head .icon-btn{margin-bottom:0}.bar{background:var(--border);border-radius:4px;flex:1;height:8px;overflow:hidden}.bar>div{background:var(--accent);border-radius:4px;height:100%;transition:width .3s}.count{white-space:nowrap;font-size:.85rem}.flashcard{text-align:center;flex-direction:column;align-items:center;gap:8px;min-height:280px;padding:32px 16px 24px;animation:.18s ease-out fade;display:flex;position:relative}.flashcard .badge{position:absolute;top:12px;left:12px}.fc-word{word-break:break-word;font-size:2.2rem;font-weight:700}.fc-uk{color:var(--accent);margin-top:8px;font-size:1.5rem;font-weight:600}.fc-back{width:100%;animation:.18s ease-out fade}.fc-example{border-top:1px solid var(--border);margin-top:12px;padding-top:12px}.icon-btn.round{border:1px solid var(--border);color:var(--accent);background:var(--bg);border-radius:50%;margin:0}.inline-speak{color:var(--accent);vertical-align:middle;background:0 0;border:0;width:44px;height:44px;padding:0}button.icon-btn{font:inherit;background:0 0;border:0;padding:0}.answers{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.answers .btn{margin:0;padding:0 4px}.btn.again{background:color-mix(in srgb, var(--danger) 18%, var(--surface));color:var(--danger)}.btn.hard{background:color-mix(in srgb, #e0a100 20%, var(--surface));color:#9a6f00}:root[data-theme=dark] .btn.hard{color:#f0c040}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .btn.hard{color:#f0c040}}.btn.good{background:color-mix(in srgb, #2e9e5b 20%, var(--surface));color:#1f7a45}:root[data-theme=dark] .btn.good{color:#5fd08a}@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .btn.good{color:#5fd08a}}.btn:disabled{opacity:.5}.btn.ghost.solid{border-style:solid}.stat-row{justify-content:space-between;align-items:center;min-height:44px;display:flex}.stat-row+.stat-row{border-top:1px solid var(--border)}.counts{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.count{text-align:center;flex-direction:column;margin-bottom:12px;padding:10px 4px;display:flex}.count strong{font-size:1.4rem}.count span{font-size:.75rem}.search,.field input,.field select{border:1px solid var(--border);background:var(--surface);width:100%;min-height:48px;color:var(--text);font:inherit;border-radius:12px;margin-bottom:12px;padding:0 14px}.field{display:block}.field span{color:var(--muted);margin-bottom:4px;font-size:.85rem;display:block}.word-list{margin:0 0 12px;padding:0;list-style:none}.word-item{border-bottom:1px solid var(--border);align-items:center;gap:4px;padding:10px 0;display:flex}.word-main{flex:1;min-width:0}.dot{background:var(--border);border-radius:50%;flex:none;width:12px;height:12px;margin:0 8px}.dot.learning{background:#e0a100}.dot.learned{background:#2e9e5b}.dictation{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:6px;min-height:200px;display:flex;position:relative}.dictation .badge{position:absolute;top:12px;left:12px}.spell-input{text-align:center;min-height:56px;font-size:1.25rem}.result{text-align:center;border-width:2px}.result.right{border-color:#2e9e5b}.result.wrong{border-color:var(--danger)}.res-row{flex-direction:column;align-items:center;margin-top:8px;display:flex}.marks{letter-spacing:.04em;word-break:break-all;font-size:1.6rem;font-weight:600}.mk.bad.typed{color:var(--danger);text-decoration:line-through}.mk.bad.expected{color:#2e9e5b;text-decoration:underline;text-decoration-thickness:3px}.prose h2{margin:24px 0 8px;font-size:1.25rem}.prose h3{margin:16px 0 6px;font-size:1.05rem}.prose p{margin:0 0 10px}.prose ul,.prose ol{margin:0 0 12px;padding-left:22px}.prose li{margin-bottom:6px}.prose blockquote{border-left:4px solid var(--accent);background:var(--surface);color:var(--muted);border-radius:0 12px 12px 0;margin:12px 0;padding:10px 14px}.prose code{background:var(--surface);border:1px solid var(--border);border-radius:6px;padding:1px 5px}.table-wrap{border:1px solid var(--border);border-radius:12px;margin:12px 0;overflow-x:auto}.prose table{border-collapse:collapse;background:var(--surface);width:100%;font-size:.9rem}.prose th,.prose td{text-align:left;vertical-align:top;border-bottom:1px solid var(--border);padding:8px 10px}.prose th{background:var(--bg)}.prose tr:last-child td{border-bottom:0}.btn.sticky{bottom:calc(var(--nav-h) + env(safe-area-inset-bottom) + 12px);margin-top:16px;position:sticky;box-shadow:0 6px 20px #0000002e}.topic-progress{align-items:center;gap:10px;margin-top:8px;display:flex}.badge.soon{background:var(--border);color:var(--muted);align-self:flex-start}.exercise{text-align:center}.ex-prompt{margin:8px 0;font-size:1.3rem;font-weight:600}.options{gap:8px;margin-bottom:12px;display:grid}.option{border:2px solid var(--border);background:var(--surface);min-height:52px;color:var(--text);font:inherit;border-radius:14px;padding:0 14px;font-size:1.05rem;transition:border-color .12s}.option.selected{border-color:var(--accent);background:color-mix(in srgb, var(--accent) 12%, var(--surface))}.answer-line{border:1px dashed var(--border);border-radius:14px;flex-wrap:wrap;align-items:center;gap:8px;min-height:60px;margin-bottom:12px;padding:10px;display:flex}.word-bank{flex-wrap:wrap;gap:8px;margin-bottom:16px;display:flex}.chip{border:1px solid var(--border);background:var(--surface);min-height:44px;color:var(--text);font:inherit;border-radius:12px;padding:0 14px}.chip:disabled{opacity:.3}.explain{text-align:left;color:var(--text);margin:10px 0 0}.option:focus-visible,.chip:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.primary-item{background:var(--accent);color:var(--accent-text);border-color:#0000}.stage-label{margin:0 0 4px;font-size:.85rem}.counts.two{grid-template-columns:repeat(2,1fr)}.card .counts .count{background:0 0;border:0;margin-bottom:0;padding:4px}.heatmap{align-items:flex-start;gap:4px;padding-bottom:4px;display:flex;overflow-x:auto}.hm-days{color:var(--muted);flex-direction:column;gap:4px;font-size:.65rem;display:flex}.hm-days span{width:18px;height:22px;line-height:22px}.hm-week{flex-direction:column;flex:1;gap:4px;min-width:0;display:flex}.hm-cell{background:var(--border);border:0;border-radius:6px;width:100%;max-width:28px;height:22px;padding:0;display:block}button.hm-cell{min-width:14px}.hm-cell.future{border:1px dashed var(--border);background:0 0}.hm-cell.l1{background:color-mix(in srgb, var(--accent) 30%, var(--border))}.hm-cell.l2{background:color-mix(in srgb, var(--accent) 60%, var(--border))}.hm-cell.l3{background:var(--accent)}.hm-cell.frozen{background:repeating-linear-gradient(45deg,#7fb8e6,#7fb8e6 3px,#a9d2f0 3px 6px)}.hm-cell.sel{outline:2px solid var(--text);outline-offset:1px}.hm-detail{min-height:1.5em;margin:8px 0}.hm-legend{flex-wrap:wrap;align-items:center;gap:4px 6px;font-size:.75rem;display:flex}.hm-legend .hm-cell{width:14px;max-width:14px;height:14px;display:inline-block}.offline-banner{z-index:10;padding:calc(8px + env(safe-area-inset-top)) 16px 8px;text-align:center;color:#fff;background:#7a5b00;font-size:.85rem;position:sticky;top:0}.screen:focus{outline:none}.hm-grid{flex:1;gap:4px;min-width:0;display:flex}.hm-cell{height:28px}.hm-days span{height:28px;line-height:28px}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}