@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-vietnamese-opsz-normal-BjhtXyW2.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-latin-ext-opsz-normal-BQn1nviT.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Newsreader Variable;font-style:normal;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-latin-opsz-normal-s-izfB6B.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}@font-face{font-family:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-vietnamese-opsz-italic-DTr-ymY4.woff2)format("woff2-variations");unicode-range:U+102-103,U+110-111,U+128-129,U+168-169,U+1A0-1A1,U+1AF-1B0,U+300-301,U+303-304,U+308-309,U+323,U+329,U+1EA0-1EF9,U+20AB}@font-face{font-family:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-latin-ext-opsz-italic-CSPGnFdO.woff2)format("woff2-variations");unicode-range:U+100-2BA,U+2BD-2C5,U+2C7-2CC,U+2CE-2D7,U+2DD-2FF,U+304,U+308,U+329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,U+2C60-2C7F,U+A720-A7FF}@font-face{font-family:Newsreader Variable;font-style:italic;font-display:swap;font-weight:200 800;src:url(/assets/newsreader-latin-opsz-italic-kJKFiXvB.woff2)format("woff2-variations");unicode-range:U+??,U+131,U+152-153,U+2BB-2BC,U+2C6,U+2DA,U+2DC,U+304,U+308,U+329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}:root{--paper:#f5f7f6;--card:#fff;--ink:#17302c;--ink-soft:#2f4743;--muted:#5f726e;--line:#d9e2df;--accent:#1f6f63;--on-accent:#fff;--accent-soft:#e3f0ed;--mark:#f4c95d;--mark-soft:#fbefcc;--review:#7a6aa8;--review-soft:#ece8f6;--danger:#b4533c;--danger-soft:#f6e4de;--chunk:#c0782a;--sent:#d9ebe6;--now-bg:#1f6f63;--now-ink:#fff;--mine:#c2417a;--shadow:0 8px 30px #17302c24;--font-read:"Newsreader Variable", "Iowan Old Style", Georgia, serif;--font-ui:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;--tabbar-h:60px;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#0f1716;--card:#16211f;--ink:#e4eeeb;--ink-soft:#c8d6d2;--muted:#93a6a1;--line:#2a3a37;--accent:#6cc3b3;--on-accent:#0f1716;--accent-soft:#1d3330;--mark:#e7bd52;--mark-soft:#3a3220;--review:#b3a5e0;--review-soft:#2a2638;--danger:#e08a73;--danger-soft:#3a2420;--chunk:#e3a35f;--sent:#22403f;--mine:#f08bb6;--now-bg:#6cc3b3;--now-ink:#0f1716;--shadow:0 8px 30px #00000080;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--paper:#0f1716;--card:#16211f;--ink:#e4eeeb;--ink-soft:#c8d6d2;--muted:#93a6a1;--line:#2a3a37;--accent:#6cc3b3;--on-accent:#0f1716;--accent-soft:#1d3330;--mark:#e7bd52;--mark-soft:#3a3220;--review:#b3a5e0;--review-soft:#2a2638;--danger:#e08a73;--danger-soft:#3a2420;--chunk:#e3a35f;--sent:#22403f;--mine:#f08bb6;--now-bg:#6cc3b3;--now-ink:#0f1716;--shadow:0 8px 30px #00000080;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}[hidden]{display:none!important}html{-webkit-text-size-adjust:100%}body{background:var(--paper);color:var(--ink);font-family:var(--font-ui);-webkit-tap-highlight-color:transparent;margin:0;font-size:15px;line-height:1.6}a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:4px}h1,h2,h3{text-wrap:balance;margin:0}p{margin:0}.sr-only{clip:rect(0 0 0 0);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.muted{color:var(--muted)}.small{font-size:13px}.center{text-align:center;padding-block:48px}.error{color:var(--danger);padding-block:48px}.page{max-width:680px;padding-inline:16px;padding-block:calc(env(safe-area-inset-top,0px) + 20px) calc(var(--tabbar-h) + env(safe-area-inset-bottom,0px) + 32px);margin:0 auto}.page-reader{padding-top:0;padding-bottom:calc(env(safe-area-inset-bottom,0px) + 48px)}.stack{gap:20px;display:grid}.btn{font:inherit;color:var(--ink);border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:10px;justify-content:center;align-items:center;gap:6px;min-height:40px;padding:8px 14px;font-size:14px;text-decoration:none;display:inline-flex}.btn:hover{border-color:var(--accent);text-decoration:none}.btn:disabled{opacity:.5;cursor:default;border-color:var(--line)}.btn.primary{background:var(--accent);color:var(--on-accent);border-color:#0000}.btn.ghost{background:0 0}.btn.saved{background:var(--accent-soft);color:var(--accent);border-color:#0000}.btn.danger{background:var(--danger-soft);color:var(--danger);border-color:#0000}.btn.wide{width:100%;min-height:48px;font-size:16px}.icon-btn{font:inherit;color:var(--ink-soft);cursor:pointer;background:0 0;border:0;border-radius:10px;place-items:center;width:40px;height:40px;display:inline-grid}.icon-btn:hover{background:var(--accent-soft)}.link{font:inherit;color:var(--accent);cursor:pointer;background:0 0;border:0;justify-self:start;padding:4px 0;font-size:13px}.row{flex-wrap:wrap;gap:8px;display:flex}.chip{background:var(--accent-soft);color:var(--accent);letter-spacing:.02em;white-space:nowrap;border-radius:999px;padding:4px 7px;font-size:11.5px;line-height:1;display:inline-block}.chip-done{background:var(--accent-soft);color:var(--accent)}.chip-next,.chip-new{background:var(--mark-soft);color:var(--ink)}.chip-activate{background:var(--accent-soft);color:var(--accent)}.chip-review{background:var(--review-soft);color:var(--review)}.label{color:var(--muted);letter-spacing:.06em;margin-bottom:2px;font-size:11.5px;display:block}.tag{background:var(--accent-soft);color:var(--accent);border-radius:6px;margin:0 4px 4px 0;padding:1px 7px;font-size:12.5px;display:inline-block}.tabbar{z-index:20;padding-bottom:env(safe-area-inset-bottom,0px);background:color-mix(in srgb, var(--card) 92%, transparent);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);grid-auto-columns:1fr;grid-auto-flow:column;display:grid;position:fixed;inset:auto 0 0}.tab{height:var(--tabbar-h);color:var(--muted);place-content:center;justify-items:center;gap:2px;font-size:11.5px;display:grid}.tab:hover{color:var(--ink);text-decoration:none}.tab.active{color:var(--accent)}.lib-head{gap:14px;padding-top:8px;display:grid}.brand{font-family:var(--font-read);letter-spacing:.02em;font-size:30px;font-weight:600}.stats{grid-template-columns:repeat(3,1fr);gap:8px;margin:0;display:grid}.stats div{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:10px 12px}.stats dt{color:var(--muted);font-size:12px}.stats dd{font-variant-numeric:tabular-nums;margin:0;font-size:22px;font-weight:600}.stats small{color:var(--muted);font-size:12px;font-weight:400}.lessons{gap:12px;margin:0;padding:0;list-style:none;display:grid}.lesson-card{color:var(--ink);background:var(--card);border:1px solid var(--line);border-radius:14px;gap:6px;padding:16px;display:grid}.lesson-card:hover{border-color:var(--accent);text-decoration:none}.lesson-card.is-next{border-color:var(--mark);box-shadow:inset 4px 0 0 var(--mark)}.eyebrow{color:var(--muted);letter-spacing:.04em;flex-wrap:wrap;align-items:center;gap:8px;font-size:12px;display:flex}.lesson-title{font-family:var(--font-read);font-size:22px;font-weight:600;line-height:1.25}.lesson-summary{color:var(--ink-soft);font-size:14px}.meta{color:var(--muted);font-variant-numeric:tabular-nums;font-size:12.5px}.reader{gap:0;display:grid}.reader-bar{z-index:10;padding:calc(env(safe-area-inset-top,0px) + 6px) 8px 6px;background:color-mix(in srgb, var(--paper) 90%, transparent);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);align-items:center;gap:6px;margin-inline:-16px;display:flex;position:sticky;top:0}.reader-bar-title{color:var(--muted);letter-spacing:.04em;font-size:13px}.reader-head{gap:10px;padding-block:24px 8px;display:grid}.reader-title{font-family:var(--font-read);letter-spacing:-.005em;font-size:clamp(28px,7.5vw,38px);font-weight:600;line-height:1.15}.legend{flex-wrap:wrap;align-items:baseline;gap:6px 12px;font-size:12.5px;display:flex}.legend .w{font-family:var(--font-read);cursor:default;font-size:15px}.article{font-family:var(--font-read);font-optical-sizing:auto;-webkit-hyphens:manual;hyphens:manual;padding-block:16px 8px;font-size:20px;line-height:1.75}.article p{margin:0 0 1em}.article ::selection{background:var(--mark);color:#17302c}.w{cursor:pointer;border-radius:3px;padding:0 1px;transition:background .15s}.w-new{background:linear-gradient(transparent 58%, var(--mark-soft) 58%);box-shadow:inset 0 -2px 0 var(--mark)}.w-activate{box-shadow:inset 0 -2px 0 var(--accent)}.w-review{box-shadow:inset 0 -2px 0 var(--review);text-decoration:none}.w:hover,.w:focus-visible{background:var(--mark-soft)}.g{border-bottom:1px dotted var(--muted);cursor:help}.g-zh{font-family:var(--font-ui);color:var(--muted);font-size:.7em}.section{border-top:1px solid var(--line);gap:12px;margin-top:12px;padding-block:28px 4px;scroll-margin-top:64px;display:grid}.section-title{font-size:17px;font-weight:600}.word-group{gap:8px;display:grid}.word-group-title{color:var(--ink-soft);font-size:13px;font-weight:500}.chips{flex-wrap:wrap;gap:8px;display:flex}.word-chip{font:inherit;cursor:pointer;text-align:left;background:var(--card);border:1px solid var(--line);color:var(--ink);border-radius:10px;gap:0;padding:6px 10px;display:grid}.word-chip:hover{border-color:var(--accent)}.word-chip-en{font-family:var(--font-read);font-size:17px;font-weight:600}.word-chip-zh{color:var(--muted);font-size:12px}.wc-new{box-shadow:inset 3px 0 0 var(--mark)}.wc-activate{box-shadow:inset 3px 0 0 var(--accent)}.wc-review{box-shadow:inset 3px 0 0 var(--review)}.expr-list{gap:12px;margin:0;padding:0;list-style:none;display:grid}.expr-card,.note,.prompt,.writing,.panel{background:var(--card);border:1px solid var(--line);border-radius:14px;gap:8px;min-width:0;padding:16px;display:grid}.expr-card .btn{justify-self:start}.expr-phrase,.note-text{font-family:var(--font-read);font-size:20px;font-weight:600;line-height:1.35}.expr-zh{font-size:15px}.expr-pattern{color:var(--ink-soft);font-size:13.5px}.expr-swap{font-family:var(--font-read);color:var(--ink-soft);background:var(--paper);border-radius:8px;padding:8px 10px;font-size:16px;font-style:italic}.expr-swap .label{font-family:var(--font-ui);font-style:normal}.prompt{gap:10px}.prompt-q{font-family:var(--font-read);font-size:18px;line-height:1.45}.prompt .btn{justify-self:start}.answer{width:100%;font-family:var(--font-read);color:var(--ink);background:var(--paper);border:1px solid var(--line);resize:vertical;border-radius:10px;padding:10px 12px;font-size:17px;line-height:1.55}.answer:focus{border-color:var(--accent);outline:none}.used{color:var(--muted);font-size:13px}.model{border-left:3px solid var(--accent);background:var(--accent-soft);border-radius:0 10px 10px 0;padding:10px 12px}.model-text{font-family:var(--font-read);font-size:17px;line-height:1.6}.finish{border-top:1px solid var(--line);justify-items:start;gap:12px;margin-top:20px;padding-block:32px 8px;display:grid}.finish .btn.wide{justify-self:stretch}.finish-done{color:var(--accent);align-items:center;gap:6px;display:inline-flex}.sheet-backdrop{z-index:40;background:#0a141259;justify-content:center;align-items:flex-end;animation:.15s ease-out fade;display:flex;position:fixed;inset:0}.sheet{background:var(--card);width:100%;max-width:560px;max-height:82vh;box-shadow:var(--shadow);padding:8px 20px calc(env(safe-area-inset-bottom,0px) + 20px);border-radius:18px 18px 0 0;gap:14px;animation:.2s ease-out rise;display:grid;overflow-y:auto}.sheet:focus{outline:none}.sheet-grip{background:var(--line);border-radius:2px;justify-self:center;width:36px;height:4px}.sheet-head{justify-content:space-between;align-items:flex-start;gap:12px;display:flex}.sheet-word{font-family:var(--font-read);font-size:32px;font-weight:600;line-height:1.1}.sheet-sub{align-items:center;gap:8px;margin-top:6px;display:flex}.pos{color:var(--muted);font-style:italic;font-family:var(--font-read);font-size:15px}.sheet-tools{gap:2px;display:flex}.sheet-body{gap:12px;margin:0;display:grid}.sheet-body dt{color:var(--muted);letter-spacing:.06em;margin-bottom:2px;font-size:11.5px}.sheet-body dd{margin:0}.sheet-zh{font-size:17px}.sheet-colloc{font-family:var(--font-read);color:var(--accent);font-size:18px;font-weight:600}.sheet-sentence{font-family:var(--font-read);gap:4px;font-size:17px;line-height:1.55;display:grid}.sheet-sentence strong{background:var(--mark-soft);border-radius:3px;padding:0 2px}.trail{gap:4px;margin:0;padding-left:1.1em;font-size:14px;display:grid}.trail em{font-family:var(--font-read);font-size:16px}.sheet-hint{color:var(--muted);border-top:1px solid var(--line);padding-top:10px;font-size:12.5px}@media (width>=720px){.sheet-backdrop{align-items:center}.sheet{border-radius:18px;padding-bottom:20px}.sheet-grip{display:none}}.page-head{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;padding-top:8px;display:flex}.page-title{font-family:var(--font-read);font-size:28px;font-weight:600}.filters{gap:8px;padding-bottom:2px;display:flex;overflow-x:auto}.filter{font:inherit;white-space:nowrap;cursor:pointer;border:1px solid var(--line);background:var(--card);color:var(--ink-soft);border-radius:999px;padding:6px 12px;font-size:13px}.filter.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}.notes,.writings{gap:12px;margin:0;padding:0;list-style:none;display:grid}.note-top{justify-content:space-between;align-items:center;gap:8px;display:flex}.context{border-left:3px solid var(--line);font-family:var(--font-read);color:var(--ink-soft);white-space:pre-line;margin:0;padding:10px 12px;font-size:16px;line-height:1.6}.context mark{background:var(--mark-soft);color:inherit;border-radius:3px;padding:0 2px}.rewrite-label{color:var(--ink-soft);margin-top:4px;font-size:13px}.note-actions{justify-content:flex-end;gap:8px;display:flex}.writing-answer{font-family:var(--font-read);white-space:pre-line;font-size:17px;line-height:1.6}.empty{background:var(--card);border:1px dashed var(--line);border-radius:14px;justify-items:start;gap:10px;padding:20px;display:grid}.panel-title{font-size:16px;font-weight:600}.key-form{flex-wrap:wrap;gap:8px;display:flex}.key-form input{min-width:0;font:inherit;color:var(--ink);border:1px solid var(--line);background:var(--paper);border-radius:10px;flex:200px;padding:8px 12px;font-size:16px}.key-form input:focus{border-color:var(--accent);outline:none}.status{color:var(--muted);font-size:13px}.status.ok{color:var(--accent)}.status.err{color:var(--danger)}.panel .btn{justify-self:start}.toast-wrap{left:0;right:0;bottom:calc(var(--tabbar-h) + env(safe-area-inset-bottom,0px) + 16px);z-index:50;pointer-events:none;justify-content:center;display:flex;position:fixed}.toast{background:var(--ink);color:var(--paper);box-shadow:var(--shadow);border-radius:999px;padding:9px 16px;font-size:14px;animation:.2s ease-out rise}@keyframes rise{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:none}}@keyframes fade{0%{opacity:0}to{opacity:1}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}.tab-icon{display:inline-grid;position:relative}.badge{background:var(--danger);color:#fff;text-align:center;font-variant-numeric:tabular-nums;border-radius:9px;min-width:18px;height:18px;padding:0 5px;font-size:11px;line-height:18px;position:absolute;top:-6px;left:14px}.due-panel{gap:12px}.due-num{font-family:var(--font-read);font-variant-numeric:tabular-nums;font-size:44px;font-weight:600;line-height:1}.due-num small{font-family:var(--font-ui);color:var(--muted);font-size:15px;font-weight:400}.upcoming{gap:6px;margin:0;padding:0;list-style:none;display:grid}.upcoming li{grid-template-columns:6.5em 1fr 2em;align-items:center;gap:10px;font-size:13px;display:grid}.up-label{color:var(--ink-soft)}.up-bar{background:var(--paper);border-radius:4px;height:8px;overflow:hidden}.up-bar i{background:var(--accent);border-radius:4px;height:100%;display:block}.up-n{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}.lesson-links{margin:0;padding:0;list-style:none;display:grid}.lesson-links a{border-bottom:1px solid var(--line);color:var(--ink);justify-content:space-between;gap:12px;padding:10px 0;display:flex}.lesson-links li:last-child a{border-bottom:0}.table-wrap{overflow-x:auto}.word-table{border-collapse:collapse;width:100%;font-size:13.5px}.word-table th,.word-table td{text-align:left;border-bottom:1px solid var(--line);white-space:nowrap;padding:7px 6px}.word-table th{color:var(--muted);font-size:12px;font-weight:500}.word-table .num{text-align:right;font-variant-numeric:tabular-nums}.en{font-family:var(--font-read);font-size:16px}.page-session{padding-top:0;padding-bottom:calc(env(safe-area-inset-bottom,0px) + 32px)}.session{gap:14px;display:grid}.session-bar{color:var(--muted);padding:calc(env(safe-area-inset-top,0px) + 6px) 8px 6px;align-items:center;gap:6px;margin-inline:-16px;font-size:13px;display:flex}.session-count{font-variant-numeric:tabular-nums;margin-left:auto;padding-right:8px}.bar{background:var(--line);border-radius:2px;height:4px;overflow:hidden}.bar i{background:var(--accent);height:100%;transition:width .25s;display:block}.card-q{background:var(--card);border:1px solid var(--line);border-radius:16px;gap:14px;padding:20px 18px;display:grid}.q-meta{align-items:center;gap:8px;display:flex}.q-sentence{font-family:var(--font-read);font-size:21px;line-height:1.9}.blank{font:inherit;color:var(--accent);border:0;border-bottom:2px solid var(--accent);background:var(--accent-soft);text-align:center;vertical-align:baseline;border-radius:0;max-width:100%;margin:0 2px;padding:0 4px;font-weight:600;line-height:1.3}.blank:focus{background:var(--mark-soft);outline:none}.blank::placeholder{color:var(--muted);font-weight:400}.blank.blank-correct{color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}.blank.blank-form,.blank.blank-hint{color:var(--ink);border-color:var(--mark);background:var(--mark-soft)}.blank.blank-wrong{color:var(--danger);border-color:var(--danger);background:var(--danger-soft)}.q-hint{color:var(--ink-soft);font-size:15px}.q-actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.fb{border-top:1px solid var(--line);justify-items:start;gap:8px;padding-top:12px;display:grid}.fb .btn{justify-self:stretch;min-height:46px}.fb-head{font-size:15px}.fb-head b{font-family:var(--font-read);font-size:18px}.fb-say{vertical-align:-3px;margin:0 2px 0 4px}.fb-ok{color:var(--accent);font-weight:600}.fb-form{color:var(--ink)}.fb-form b{background:var(--mark-soft);border-radius:3px;padding:0 3px}.fb-bad{color:var(--danger)}.fb-colloc{font-family:var(--font-read);font-size:17px}.spell-box{justify-items:start;gap:6px;display:grid}.spell{font-family:var(--font-read);letter-spacing:.05em;font-size:26px;line-height:1.3}.sp-miss{color:var(--accent);box-shadow:inset 0 -2px 0 var(--accent);padding:0 1px}.sp-extra{color:var(--danger);padding:0 1px;text-decoration:line-through;text-decoration-thickness:2px}.sp-swap{color:var(--review);box-shadow:inset 0 -2px 0 var(--review);padding:0 1px}.spell-note{color:var(--ink-soft);font-size:14px}.retype{flex-wrap:wrap;align-items:center;gap:6px 10px;margin-top:4px;display:flex}.retype .blank{font-family:var(--font-read);font-size:19px}.retype-ok{color:var(--accent);font-weight:600}.retype-err{color:var(--danger);font-size:14px}.fb-colloc .label{font-family:var(--font-ui)}.split3{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.split3 div{border-radius:12px;gap:2px;padding:12px;display:grid}.split3 b{font-variant-numeric:tabular-nums;font-size:24px}.split3 span{color:var(--ink-soft);font-size:12px}.s-ok{background:var(--accent-soft)}.s-form{background:var(--mark-soft)}.s-bad{background:var(--danger-soft)}.result-list{margin:0;padding:0;list-style:none;display:grid}.result-list li{border-bottom:1px solid var(--line);grid-template-columns:10px 1fr auto;align-items:center;gap:10px;padding:8px 0;display:grid}.dot{border-radius:50%;width:8px;height:8px}.dot-correct{background:var(--accent)}.dot-form,.dot-hint{background:var(--mark)}.dot-wrong{background:var(--danger)}.reader.has-player{padding-bottom:76px}.article.listening .tk{cursor:pointer}.tk,.w,.g{border-radius:3px;position:relative}.now{background:var(--now-bg);color:var(--now-ink);box-shadow:0 0 0 3px var(--now-bg);border-radius:4px}.ripple:after{content:"";pointer-events:none;border:2px solid var(--accent);border-radius:8px;animation:.6s ease-out forwards ripple;position:absolute;inset:-6px -4px}@keyframes ripple{0%{opacity:.7;transform:scale(.85)}to{opacity:0;transform:scale(1.25)}}.player{z-index:25;padding:8px 12px calc(env(safe-area-inset-bottom,0px) + 8px);background:color-mix(in srgb, var(--card) 94%, transparent);-webkit-backdrop-filter:blur(12px);border-top:1px solid var(--line);gap:6px;display:grid;position:fixed;bottom:0;left:0;right:0}.player>*{width:100%;max-width:680px;margin-inline:auto}.player-main{grid-template-columns:32px 40px 32px auto 1fr auto 32px auto;align-items:center;gap:6px;display:grid}.nav-btn,.loop-btn{cursor:pointer;width:32px;height:32px;color:var(--ink-soft);background:0 0;border:0;border-radius:8px;place-items:center;display:grid;position:relative}.nav-btn:hover,.loop-btn:hover{background:var(--paper)}.loop-btn.on{background:var(--accent-soft);color:var(--accent)}.loop-one{color:var(--accent);font-variant-numeric:tabular-nums;font-size:9px;font-weight:700;line-height:1;position:absolute;bottom:2px;right:3px}@media (width<=420px){.player-main{grid-template-columns:32px 40px 32px auto 1fr 0 32px auto}.time-total{display:none}}.play-btn{cursor:pointer;background:var(--accent);width:40px;height:40px;color:var(--on-accent);border:0;border-radius:50%;place-items:center;display:grid}.time{color:var(--muted);font-variant-numeric:tabular-nums;text-align:center;min-width:3.2em;font-size:12.5px}.seek{appearance:none;cursor:pointer;background:0 0;width:100%;min-width:0;height:24px}.seek::-webkit-slider-runnable-track{background:linear-gradient(to right, var(--accent) var(--p,0%), var(--line) var(--p,0%));border-radius:2px;height:4px}.seek::-moz-range-track{background:var(--line);border-radius:2px;height:4px}.seek::-moz-range-progress{background:var(--accent);border-radius:2px;height:4px}.seek::-webkit-slider-thumb{-webkit-appearance:none;background:var(--accent);border:2px solid var(--card);border-radius:50%;width:16px;height:16px;margin-top:-6px}.seek::-moz-range-thumb{background:var(--accent);border:2px solid var(--card);border-radius:50%;width:14px;height:14px}.rate-menu{position:relative}.rate-btn{font:inherit;font-variant-numeric:tabular-nums;cursor:pointer;border:1px solid var(--line);background:var(--card);min-width:48px;height:32px;color:var(--ink);border-radius:8px;padding:0 8px;font-size:13px;font-weight:600}.rate-pop{z-index:30;background:var(--card);border:1px solid var(--line);min-width:76px;box-shadow:var(--shadow);border-radius:10px;padding:4px;animation:.12s ease-out rise;display:grid;position:absolute;bottom:calc(100% + 8px);right:0}.rate-opt{font:inherit;font-variant-numeric:tabular-nums;text-align:center;cursor:pointer;color:var(--ink);background:0 0;border:0;border-radius:7px;padding:8px 10px;font-size:14px}.rate-opt:hover{background:var(--paper)}.rate-opt.on{background:var(--accent);color:var(--on-accent)}.listen{align-items:center;gap:4px;font-size:14px;display:inline-flex}.selchip{z-index:30;background:var(--ink);max-width:calc(100% - 24px);color:var(--paper);box-shadow:var(--shadow);border-radius:999px;align-items:center;animation:.15s ease-out rise;display:flex;position:fixed}.selchip-main{font:inherit;color:inherit;cursor:pointer;white-space:nowrap;text-overflow:ellipsis;background:0 0;border:0;min-width:0;padding:9px 4px 9px 16px;font-size:14px;overflow:hidden}.selchip-text{font-family:var(--font-read);white-space:nowrap;text-overflow:ellipsis;opacity:.8;max-width:12em;padding:9px 6px 9px 16px;font-size:15px;overflow:hidden}.selchip-btn{border-left:1px solid color-mix(in srgb, var(--paper) 30%, transparent);padding:9px 10px;font-weight:600}.chip-mine{color:var(--mine);border:1px solid var(--mine);background:0 0}.selchip-first{border-left:0;padding-left:16px}.selchip-x{font:inherit;color:inherit;opacity:.7;cursor:pointer;background:0 0;border:0;padding:8px 14px 8px 8px;font-size:18px;line-height:1}.chip-muted{background:var(--paper);color:var(--muted);border:1px solid var(--line)}.dict{color:var(--ink-soft);font-size:14px}.lookup-actions,.lookup-saved{border-top:1px solid var(--line);gap:8px;padding-top:12px;display:grid}.note-actions.spread{justify-content:space-between;align-items:center}.seg{background:var(--card);border:1px solid var(--line);border-radius:10px;grid-auto-flow:column;justify-self:start;gap:2px;padding:3px;display:inline-grid}.seg-btn{font:inherit;color:var(--ink-soft);cursor:pointer;background:0 0;border:0;border-radius:8px;padding:6px 16px;font-size:14px}.seg-btn.on{background:var(--ink);color:var(--paper)}.seg-btn.on .muted{color:inherit;opacity:.7}.seg.voices .seg-btn{padding:6px 14px;line-height:1.3}.seg.voices .seg-btn .muted{font-size:12px;display:block}.listen-row{flex-wrap:wrap;gap:6px;display:flex}.listen-btn{font:inherit;cursor:pointer;border:1px solid var(--line);background:var(--paper);color:var(--accent);border-radius:999px;align-items:center;gap:4px;padding:4px 10px;font-size:13px;display:inline-flex}.listen-btn:hover{border-color:var(--accent)}.mini-say{font:inherit;vertical-align:middle;cursor:pointer;background:var(--accent-soft);width:26px;height:26px;color:var(--accent);border:0;border-radius:50%;place-items:center;margin-left:6px;font-size:13px;display:inline-grid}.expr-swap .label{align-items:center;display:flex}.ck{text-decoration:underline;-webkit-text-decoration-color:var(--chunk);text-decoration-color:var(--chunk);text-underline-offset:6px;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none;cursor:pointer;text-decoration-thickness:1.5px}.legend .ck{font-family:var(--font-read);cursor:default;font-size:15px}.sent.cur-s{background:var(--sent);-webkit-box-decoration-break:clone;box-decoration-break:clone;border-radius:4px}.to-current{z-index:26;right:16px;bottom:calc(env(safe-area-inset-bottom,0px) + 70px);cursor:pointer;font:inherit;color:var(--on-accent);background:var(--accent);box-shadow:var(--shadow);border:0;border-radius:999px;align-items:center;gap:4px;padding:7px 12px 7px 10px;font-size:13px;animation:.15s ease-out rise;display:inline-flex;position:fixed}.chip-chunk{color:var(--chunk);border:1px solid var(--chunk);background:0 0}.chunk-title{font-size:26px;line-height:1.2}.sheet-part{border-top:1px solid var(--line);gap:12px;margin-top:4px;padding-top:14px;display:grid}.sheet-part .label{margin:0 0 -6px}.part-word{font-family:var(--font-read);font-size:24px;font-weight:600;line-height:1.15}.sheet-part .lookup-actions,.sheet-part .lookup-saved{border-top:0;padding-top:0}.sheet>.row .btn,.sheet>.finish-done{justify-self:start}.sent-zh{font-family:var(--font-ui);color:var(--ink-soft);font-size:15px;line-height:1.6}.link-row{flex-wrap:wrap;gap:4px 16px;display:flex}.explain-list{gap:14px;display:grid}.explain-item{border-left:3px solid var(--line);gap:8px;padding-left:12px;display:grid}.explain-phrase{font-family:var(--font-read);flex-wrap:wrap;align-items:center;gap:6px;font-size:20px;font-weight:600;line-height:1.25;display:flex}.explain-phrase .muted{font-size:16px;font-weight:400}.explain-missing{gap:8px;display:grid}.explain-sents{gap:14px;display:grid}.prompt-actions{flex-wrap:wrap;align-items:center;gap:4px 14px;display:flex}.prompt-actions .link{color:var(--muted);font-size:13.5px}.prompt-actions .link:hover{color:var(--accent)}.model-tip{color:var(--ink-soft);margin-top:8px;font-size:13.5px}[data-mine],.mine-sample{-webkit-text-decoration:underline dashed var(--mine);text-decoration:underline dashed var(--mine);text-underline-offset:3px;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none;text-decoration-thickness:1.5px}.article [data-mine]{cursor:pointer}.legend .mine-sample{font-family:var(--font-read);font-size:15px}.tk-in{border-radius:3px}.w[data-mine]{box-shadow:none}.w-new[data-mine]{box-shadow:none;background:linear-gradient(transparent 58%, var(--mark-soft) 58%)}.gloss-term{font-family:var(--font-read);border-bottom:1px dotted var(--muted);font-size:17px}.fix{border-left:3px solid var(--review);background:var(--review-soft);border-radius:0 10px 10px 0;gap:8px;padding:10px 12px;display:grid}.fix .label{align-items:center;gap:6px;margin:0;display:flex}.fix-date{letter-spacing:0;font-variant-numeric:tabular-nums;margin-left:auto}.chip-new{background:var(--danger);color:#fff}.fix-text{font-family:var(--font-read);margin:0;font-size:17px;line-height:1.7}.d-del{color:var(--danger);margin-right:3px;text-decoration:line-through;text-decoration-thickness:1.5px}.d-ins{color:var(--accent);box-shadow:inset 0 -2px 0 var(--accent)}.fix-points{gap:8px;margin:0;padding:0;list-style:none;display:grid}.fix-points li{gap:2px;display:grid}.fix-pair{font-family:var(--font-read);font-size:15.5px}.fix-why{color:var(--ink-soft);font-size:13.5px;line-height:1.5}.fix-comment{color:var(--ink-soft);margin:0;font-size:14px;line-height:1.55}.seg-dot{background:var(--danger);vertical-align:2px;border-radius:50%;width:7px;height:7px;margin-left:4px;display:inline-block}.banner{border:1px solid var(--line);background:var(--review-soft);color:var(--ink);border-radius:12px;justify-content:space-between;align-items:center;gap:12px;padding:12px 14px;display:flex}.banner:hover{text-decoration:none}.banner-go{color:var(--review);white-space:nowrap;font-size:14px}.vt-how{color:var(--ink-soft);gap:4px;margin:0 0 12px;padding-left:1.2em;font-size:14.5px;display:grid}.vt-top{justify-content:space-between;align-items:center;gap:12px;display:flex}.vt-bar{background:var(--line);border-radius:2px;height:4px;overflow:hidden}.vt-bar i{background:var(--accent);height:100%;transition:width .2s;display:block}.vt-card{text-align:center;background:var(--card);border:1px solid var(--line);border-radius:16px;align-content:center;justify-items:center;gap:6px;min-height:220px;padding:32px 16px;display:grid}.vt-word{font-family:var(--font-read);overflow-wrap:anywhere;margin:0;font-size:clamp(40px,12vw,56px);font-weight:600;line-height:1.15}.vt-pos{color:var(--muted);margin:0;font-size:13px}.vt-gloss{margin:10px 0 0;font-size:18px}.vt-gloss small{letter-spacing:.06em;color:var(--muted);margin-bottom:2px;font-size:12px;display:block}.vt-actions{grid-template-columns:repeat(3,1fr);gap:8px;display:grid}.vt-actions.two{grid-template-columns:1fr 1fr}.vt-actions .btn{justify-items:center;gap:2px;padding:12px 6px;display:grid}.vt-actions .btn b{font-size:15px;font-weight:600}.vt-actions .btn small{color:var(--muted);font-size:11.5px}.vt-actions .btn.primary small{color:inherit;opacity:.75}.vt-num,.pg-num{font-family:var(--font-read);font-variant-numeric:tabular-nums;margin:0;font-size:44px;font-weight:600;line-height:1.1}.pg-num small{font-family:var(--font-ui);color:var(--muted);font-size:15px;font-weight:400}.vt-bands{border-collapse:collapse;width:100%;font-size:14px}.vt-bands th{text-align:left;color:var(--muted);padding:4px 0;font-size:12px;font-weight:500}.vt-bands td{border-top:1px solid var(--line);font-variant-numeric:tabular-nums;padding:6px 0}.vt-bands th:not(:first-child),.vt-bands td:not(:first-child){text-align:right}.pg-trend{width:100%;max-width:420px;height:auto;display:block}.pg-trend polyline{fill:none;stroke:var(--accent);stroke-width:2px}.pg-trend circle{fill:var(--accent)}.pg-trend text{fill:var(--ink-soft);font-size:11px}.pg-trend .pg-trend-day{fill:var(--muted);font-size:10px}.pg-stack{border-radius:7px;gap:2px;height:14px;display:flex;overflow:hidden}.pg-stack i{min-width:4px;display:block}.pg-legend{flex-wrap:wrap;gap:6px 16px;margin:0;padding:0;font-size:14px;list-style:none;display:flex}.pg-legend li{align-items:center;gap:6px;display:flex}.pg-legend i{border-radius:3px;width:10px;height:10px;display:inline-block}.pg-new{background:var(--line)}.pg-learning{background:var(--mark)}.pg-familiar{background:var(--review)}.pg-mastered{background:var(--accent)}.pg-cal{grid-template-rows:repeat(7,1fr);grid-auto-columns:1fr;grid-auto-flow:column;gap:3px;max-width:360px;display:grid}.pg-cal i{aspect-ratio:1;background:var(--line);border-radius:3px}.pg-cal i.l1{background:color-mix(in srgb, var(--accent) 35%, var(--card))}.pg-cal i.l2{background:color-mix(in srgb, var(--accent) 65%, var(--card))}.pg-cal i.l3{background:var(--accent)}.pg-cal i.future{background:0 0}.pg-totals{grid-template-columns:repeat(2,1fr);gap:8px;margin:0;display:grid}.pg-totals div{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:10px 12px}.pg-totals dt{color:var(--muted);font-size:12px}.pg-totals dd{font-variant-numeric:tabular-nums;margin:0;font-size:22px;font-weight:600}.pg-totals dd small{color:var(--muted);font-size:12px;font-weight:400}.pg-totals p{color:var(--muted);margin:2px 0 0;font-size:12px;line-height:1.4}.welcome{padding-top:max(48px, env(safe-area-inset-top,0px) + 32px)}.welcome-head{align-items:baseline;gap:10px;display:flex}.welcome-sub{color:var(--accent);font-size:15px;font-weight:600}.welcome-text{color:var(--ink-soft);font-size:16px;line-height:1.7}.welcome-form{gap:12px;display:grid}.welcome-input{font:inherit;letter-spacing:.06em;border:1px solid var(--line);background:var(--card);min-height:48px;color:var(--ink);border-radius:10px;width:100%;padding:12px 14px;font-size:18px}.welcome-input:focus{border-color:var(--accent);outline:none}.welcome-foot{font-size:13px;line-height:1.6}.onboard{gap:14px;display:grid}.onboard-steps{gap:10px;padding-left:1.3em;line-height:1.6;display:grid}.onboard-steps li.onboard-now b{color:var(--accent)}.topic-chips{flex-wrap:wrap;gap:8px;display:flex}.topic{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--ink);cursor:pointer;border-radius:999px;padding:8px 14px;font-size:15px}.topic.on{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}.interests-own{gap:6px;display:grid}.interests-own input{font:inherit;border:1px solid var(--line);background:var(--card);color:var(--ink);border-radius:10px;padding:10px 12px;font-size:16px}.interests-own input:focus{border-color:var(--accent);outline:none}.intro{gap:16px}.intro-head{gap:6px;padding-top:4px;display:grid}.intro-hi{color:var(--accent);margin:0;font-size:15px;font-weight:600}.intro-title{font-family:var(--font-read);margin:0;font-size:clamp(26px,7.4vw,36px);font-weight:600;line-height:1.2}.intro-sub{color:var(--ink-soft);margin:0;font-size:15px;line-height:1.65}.intro-card{background:var(--card);border:1px solid var(--line);border-radius:16px;gap:8px;margin:0;padding:14px 16px 12px;display:grid;box-shadow:0 2px 12px #17302c0f}.intro-demo{font-family:var(--font-read);margin:0;font-size:19px;line-height:1.8}.intro-demo .w{cursor:default}.intro-card figcaption{color:var(--muted);font-size:13px;line-height:1.55}.intro-features{grid-template-columns:1fr 1fr;gap:10px;margin:0;padding:0;list-style:none;display:grid}.intro-features li{background:var(--card);border:1px solid var(--line);border-radius:14px;grid-template-columns:auto 1fr;align-content:start;align-items:center;gap:6px 8px;padding:12px;display:grid}.intro-icon{background:var(--accent-soft);width:30px;height:30px;color:var(--accent);border-radius:9px;place-items:center;font-size:15px;display:grid}.intro-features b{font-size:15px}.intro-features li>span:last-child{color:var(--muted);grid-column:1/-1;font-size:13px;line-height:1.5}.intro-next{gap:10px;display:grid}.intro-next p{margin:0}.panel-title .chip{vertical-align:2px;margin-left:6px;font-weight:500}.level-picks{gap:8px;display:grid}.level-pick{font:inherit;color:var(--ink);text-align:left;border:1px solid var(--line);background:var(--paper);cursor:pointer;border-radius:12px;gap:2px;padding:12px 14px;display:grid}.level-pick:hover,.level-pick:focus-visible{border-color:var(--accent);outline:none}.level-pick b{font-size:16px}.level-pick span{color:var(--muted);font-size:13px;line-height:1.5}@media (width>=480px){.level-picks{grid-template-columns:1fr 1fr}}.pg-num.pg-none{color:var(--muted);font-size:32px}.next-lesson{gap:8px;display:grid}.next-title{align-items:center;gap:10px;font-weight:600;display:flex}.spinner{border:2px solid var(--accent-soft);border-top-color:var(--accent);border-radius:50%;flex:none;width:16px;height:16px;animation:.9s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (prefers-reduced-motion:reduce){.spinner{animation-duration:3s}}.section-title{color:var(--ink-soft);margin-top:6px;font-size:15px;font-weight:600}.section-title small{color:var(--muted);margin-left:6px;font-size:12px;font-weight:400}.ask-fix{flex-wrap:wrap;align-items:center;gap:10px;margin-top:8px;display:flex}