:root{color-scheme:light dark;--bg: #f8f8fc;--surface: #ffffff;--surface-2: #f3f2fa;--text: #1d2045;--muted: #5d6079;--border: #e6e5ef;--border-strong: #d4d2e3;--accent: #5b4ee6;--accent-text: #ffffff;--accent-hover: #4c3fd4;--accent-soft: #eeecfe;--accent-soft-text: #4537c8;--mint: #d6f5e6;--mint-text: #0f6a46;--rose: #fde3ea;--rose-text: #a3214a;--warn: #8a5200;--warn-soft: #fff1d6;--danger: #b3261e;--danger-soft: #fde4e1;--danger-on: #ffffff;--focus: #5b4ee6;--brand-ink: #1d2045;--brand-ish: #6c5cf0;--edit: var(--mint);--edit-border: #2f9f73;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 24px;--space-6: 32px;--space-7: 48px;--space-8: 72px;--radius-sm: 8px;--radius: 14px;--radius-lg: 20px;--radius-pill: 999px;--shadow-float: 0 8px 28px rgb(29 32 69 / .12), 0 1px 3px rgb(29 32 69 / .08);--shadow: var(--shadow-float);--fs-display: 2.25rem;--fs-h1: 1.6rem;--fs-h2: 1.2rem;--fs-result: 1.45rem;--fs-body: 1rem;--fs-small: .875rem;--fs-micro: .75rem;--font: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans", "Microsoft YaHei", "Noto Sans CJK SC", "Noto Sans JP", "Apple SD Gothic Neo", "Malgun Gothic", "Noto Sans KR", "Noto Sans Devanagari", "Noto Sans Arabic", "Segoe UI Emoji", sans-serif;--rail-w: 76px;--app-header-h: 64px;--bottom-nav-h: 0px;--keyboard-inset: 0px;--tabbar-h: var(--bottom-nav-h)}@media(prefers-color-scheme:dark){:root{--bg: #121326;--surface: #1a1c33;--surface-2: #24263f;--text: #ecebf7;--muted: #a9abc6;--border: #2f3150;--border-strong: #3a3d60;--accent: #a49cff;--accent-text: #14122e;--accent-hover: #b8b2ff;--accent-soft: #2b2856;--accent-soft-text: #d0cbff;--mint: #16402f;--mint-text: #6fdcab;--rose: #4b2032;--rose-text: #ff9fb9;--warn: #f0b44c;--warn-soft: #3a2c12;--danger: #ff8a80;--danger-soft: #3d1e1c;--danger-on: #1a0a08;--focus: #a49cff;--brand-ink: #ecebf7;--brand-ish: #b3abff;--edit-border: #6fdcab;--shadow-float: 0 8px 28px rgb(0 0 0 / .45), 0 1px 3px rgb(0 0 0 / .4)}}@media(max-width:719px){:root{--app-header-h: 56px;--bottom-nav-h: calc(60px + env(safe-area-inset-bottom)) ;--tabbar-h: 60px;--fs-result: 1.25rem}.shell[data-keyboard=open]{--bottom-nav-h: 0px;--tabbar-h: 0px}}:lang(zh-Hans),:lang(zh){font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC",var(--font)}:lang(zh-Hant){font-family:"PingFang TC","Microsoft JhengHei","Noto Sans CJK TC","Noto Sans TC",var(--font)}:lang(ja){font-family:"Hiragino Sans","Yu Gothic","Meiryo","Noto Sans JP","Noto Sans CJK JP",var(--font)}:lang(ko){font-family:"Apple SD Gothic Neo","Malgun Gothic","Noto Sans KR","Noto Sans CJK KR",var(--font)}:lang(ar){font-family:"SF Arabic","Geeza Pro","Segoe UI","Noto Sans Arabic","Noto Naskh Arabic",Tahoma,var(--font)}:lang(hi){font-family:"Kohinoor Devanagari","Devanagari Sangam MN","Nirmala UI","Noto Sans Devanagari",Mangal,var(--font)}.flip-rtl{display:inline-block}[dir=rtl] .flip-rtl,[dir=ltr] [dir=rtl] .flip-rtl{transform:scaleX(-1)}[dir=rtl] [dir=ltr] .flip-rtl{transform:none}[dir=rtl] [lang]:not([dir]):not(:lang(ar)):not(:lang(he)):not(:lang(fa)):not(:lang(ur)):not(:lang(ar-XB)){direction:ltr;unicode-bidi:isolate}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}body{background:var(--bg);color:var(--text);font:16px/1.5 var(--font);-webkit-text-size-adjust:100%;-webkit-font-smoothing:antialiased}a{color:var(--accent);text-underline-offset:.18em}h1{font-size:var(--fs-h1);line-height:1.2;font-weight:700;margin:0 0 .75rem;letter-spacing:-.01em}h2{font-size:var(--fs-h2);line-height:1.3;font-weight:650;margin:0 0 .5rem}h3{font-size:1.02rem;font-weight:650;margin:0 0 .5rem}p{margin:0 0 .5rem}:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}[tabindex="-1"]:focus{outline:none}.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}.muted{color:var(--muted)}.small{font-size:var(--fs-small)}.warning{color:var(--warn)}.error-text,.form-error{color:var(--danger)}.stack{display:flex;flex-direction:column;gap:.75rem}.row{display:flex;flex-wrap:wrap;gap:.5rem;align-items:center}.code{background:var(--surface-2);padding:.75rem;border-radius:var(--radius-sm);overflow:auto;font:13px/1.4 ui-monospace,SFMono-Regular,Menlo,monospace}.icon{display:block;flex:none}.logo{display:inline-flex;align-items:center;gap:calc(var(--logo-size, 36px) * .22);color:var(--brand-ink);line-height:1}.brand-symbol{display:block;flex:none}.wordmark{display:inline-flex;align-items:baseline;font-weight:750;font-size:calc(var(--logo-size, 36px) * .72);letter-spacing:-.02em;white-space:nowrap;padding-block-end:.12em}.wordmark-a{color:var(--brand-ink)}.wordmark-b{position:relative;color:var(--brand-ish);font-style:italic;padding-inline-end:.06em}.wordmark-swoosh{position:absolute;inset-inline-start:.04em;inset-block-start:100%;width:100%;height:.24em;margin-block-start:-.1em;color:var(--brand-ish);overflow:visible}[dir=rtl] .wordmark{direction:ltr}.brand{display:inline-flex;align-items:center;color:var(--text);text-decoration:none;border-radius:var(--radius-sm)}.skip-link{position:absolute;inset-inline-start:1rem;inset-block-start:-100px;z-index:100;background:var(--accent);color:var(--accent-text);padding:.5rem 1rem;border-radius:var(--radius-sm)}.skip-link:focus{inset-block-start:.5rem}.shell{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column;padding-inline-start:var(--rail-w)}.appbar{position:sticky;inset-block-start:0;z-index:35;display:flex;align-items:center;gap:.75rem;min-height:var(--app-header-h);padding-block:calc(.5rem + env(safe-area-inset-top)) .5rem;padding-inline:2rem;background:var(--bg)}.appbar .brand{display:inline-flex;align-items:center;color:var(--text);text-decoration:none;border-radius:var(--radius-sm)}.appbar-slot{margin-inline-start:auto;display:flex;align-items:center;min-width:0}.appbar-end{display:flex;gap:.5rem;align-items:center}.appbar-slot:empty+.appbar-end{margin-inline-start:auto}.avatar-button{display:inline-grid;place-items:center;width:44px;height:44px;border-radius:50%;border:1px solid var(--border);background:var(--surface);color:var(--text);cursor:pointer;padding:0;font:inherit;font-weight:700}.avatar-button:hover,.avatar-button[aria-expanded=true]{background:var(--surface-2);border-color:var(--border-strong)}.avatar-button .icon{width:24px;height:24px}.nav{position:fixed;z-index:30;inset-block:0;inset-inline-start:0;width:var(--rail-w);background:var(--bg);border-inline-end:1px solid var(--border);padding-block:calc(var(--app-header-h) + 1.25rem) 1rem}.nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;align-items:center;gap:.75rem}.nav a{position:relative;display:grid;place-items:center;width:52px;height:52px;border-radius:var(--radius);color:var(--muted);text-decoration:none}.nav a:hover{color:var(--text);background:var(--surface-2)}.nav a[aria-current=page]{color:var(--accent-soft-text);background:var(--accent-soft)}.nav .icon{width:26px;height:26px}.nav-label{font-size:var(--fs-micro);font-weight:600}@media(min-width:720px){.nav-label{position:absolute;inset-inline-start:calc(100% + 10px);inset-block-start:50%;transform:translateY(-50%);white-space:nowrap;background:var(--text);color:var(--bg);padding:.3rem .6rem;border-radius:var(--radius-sm);font-size:var(--fs-small);opacity:0;pointer-events:none;transition:opacity .12s ease;box-shadow:var(--shadow-float)}.nav a:hover .nav-label,.nav a:focus-visible .nav-label{opacity:1}}main{flex:1;width:100%;max-width:760px;margin:0 auto;padding:.5rem 1.25rem 3rem}.shell[data-keyboard=open] .composer{inset-block-end:var(--keyboard-inset)}.banner{padding:.5rem 1rem;text-align:center}.banner-error{background:var(--danger-soft);color:var(--danger)}@media(max-width:719px){.shell{padding-inline-start:0}.appbar{padding-inline:1rem;gap:.5rem;padding-block-start:calc(.6rem + env(safe-area-inset-top))}.appbar .brand-symbol{width:30px;height:30px}.appbar .wordmark{font-size:21px}.appbar .logo{gap:6px}.nav{inset-block:auto 0;inset-inline:0;width:auto;height:var(--bottom-nav-h);padding:0 .5rem env(safe-area-inset-bottom);border-inline-end:0;border-block-start:1px solid var(--border);background:var(--surface)}.nav ul{flex-direction:row;justify-content:space-around;height:100%;gap:0}.nav a{width:auto;min-width:72px;height:52px;gap:2px;padding-inline:.75rem;display:flex;flex-direction:column;align-items:center;justify-content:center}.nav .icon{width:24px;height:24px}.shell[data-keyboard=open] .nav{display:none}main{padding:.25rem 1rem calc(var(--bottom-nav-h) + 2rem)}}@media(max-width:359px){.appbar .lang-pill-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}.appbar .lang-pill{padding-inline-end:.45rem;gap:.25rem}}@media(max-width:330px){.appbar .wordmark{display:none}}.pop-wrap{position:relative}.shell-menu{position:absolute;z-index:45;inset-inline-end:0;inset-block-start:calc(100% + 8px);min-width:250px;max-width:min(320px,calc(100vw - 2rem));padding:.4rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-float);display:flex;flex-direction:column;gap:2px}.shell-menu-status{margin:0 0 .25rem;padding:.5rem .75rem .6rem;border-block-end:1px solid var(--border);font-size:var(--fs-small);color:var(--muted);overflow-wrap:anywhere}.shell-menu-status strong{display:block;color:var(--text);font-size:var(--fs-body)}.shell-menu [role=menuitem]{display:flex;align-items:center;gap:.6rem;min-height:44px;padding:.5rem .75rem;border:0;border-radius:var(--radius-sm);background:none;color:var(--text);font:inherit;text-align:start;text-decoration:none;cursor:pointer}.shell-menu [role=menuitem]:hover,.shell-menu [role=menuitem]:focus-visible{background:var(--surface-2);outline-offset:-2px}.shell-menu .icon{width:20px;height:20px;color:var(--muted)}.shell-menu [role=separator]{border-block-start:1px solid var(--border);margin:.25rem 0}.lang-pill{display:inline-flex;align-items:center;gap:.5rem;min-height:44px;max-width:min(340px,46vw);padding-block:.3rem;padding-inline:.35rem .75rem;border:1px solid var(--border);border-radius:var(--radius-pill);background:var(--surface);color:var(--text);font:inherit;font-weight:600;cursor:pointer}.lang-pill:hover,.lang-pill[aria-expanded=true]{border-color:var(--border-strong);background:var(--surface-2)}.lang-badge{display:inline-grid;place-items:center;min-width:32px;height:32px;padding-inline:4px;border-radius:50%;background:var(--accent-soft);color:var(--accent-soft-text);font-size:.72rem;font-weight:750;letter-spacing:.02em;flex:none}.lang-pill-text{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.lang-pill-sub{color:var(--muted);font-weight:400}.lang-pill .icon{width:18px;height:18px;color:var(--muted)}.pill-pop{position:absolute;z-index:45;inset-inline-end:0;inset-block-start:calc(100% + 8px);width:min(340px,calc(100vw - 2rem));max-height:min(70vh,560px);overflow:auto;padding:.75rem;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-float)}.pill-pop:focus,.pill-sheet:focus{outline:none}.sheet-backdrop{position:fixed;inset:0;z-index:70;background:#12132666}.pill-sheet{position:fixed;z-index:71;inset-inline:0;inset-block-end:0;max-height:85vh;overflow:auto;padding:.25rem 1rem calc(1rem + env(safe-area-inset-bottom));background:var(--surface);border-radius:var(--radius-lg) var(--radius-lg) 0 0;box-shadow:var(--shadow-float)}.sheet-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem;min-height:52px}.sheet-head h2{margin:0;font-size:1.05rem}@media(max-width:719px){.lang-pill{max-width:44vw;padding-inline-end:.5rem}.lang-pill-sub{display:none}}.write-frame{display:grid;grid-template-columns:minmax(0,1fr);gap:2rem;align-items:start}.write-frame.with-aside{grid-template-columns:minmax(0,1fr) 300px}.write-frame-main{min-width:0;max-width:760px;width:100%;margin-inline:auto;display:flex;flex-direction:column;gap:.5rem}.write-frame-aside{position:sticky;inset-block-start:calc(var(--app-header-h) + .5rem);max-height:calc(100vh - var(--app-header-h) - 1rem);overflow:auto;overscroll-behavior:contain;padding-block-end:.5rem}@media(max-width:1199px){.write-frame.with-aside{grid-template-columns:minmax(0,1fr)}}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;margin-block-end:1rem}.panel{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;margin-block:.75rem;position:relative}.panel-head{display:flex;align-items:center;justify-content:space-between;gap:.5rem}.notice{background:var(--warn-soft);border:1px solid var(--border);border-radius:var(--radius);padding:.75rem 1rem;margin-block:.75rem}.notice-error{background:var(--danger-soft)}.center-page{min-height:100vh;display:grid;place-items:center;padding:1rem}.center-page>.card{max-width:480px;width:100%}.placeholder{padding-block:1rem}.button{display:inline-flex;align-items:center;justify-content:center;gap:.45rem;min-height:44px;padding:.5rem 1.1rem;border-radius:var(--radius-pill);border:1px solid var(--border);background:var(--surface);color:var(--text);font:inherit;font-weight:600;cursor:pointer;text-decoration:none}.button:hover:not(:disabled){background:var(--surface-2)}.button:disabled{opacity:.55;cursor:not-allowed}.button-primary{background:var(--accent);border-color:var(--accent);color:var(--accent-text)}.button-primary:hover:not(:disabled){background:var(--accent-hover);border-color:var(--accent-hover)}.button-quiet{background:transparent;border-color:transparent}.button-danger{background:var(--danger);border-color:var(--danger);color:var(--danger-on)}.button-large{min-height:52px;padding-inline:1.5rem;font-size:1.05rem}.button-small{min-height:36px;padding:.25rem .75rem;font-size:.875rem}.button-provider{justify-content:flex-start}.icon-button{background:transparent;border:0;color:inherit;font-size:1.1rem;min-width:36px;min-height:36px;border-radius:8px;cursor:pointer}.icon-button:hover{background:var(--surface-2)}.icon-button.active{background:var(--accent-soft)}.link-button{background:none;border:0;padding:0;color:var(--accent);font:inherit;text-decoration:underline;cursor:pointer}.chip{display:inline-flex;align-items:center;gap:.3rem;padding:.25rem .75rem;border-radius:999px;border:1px solid var(--border);background:var(--surface-2);font:inherit;font-size:.875rem;color:var(--text)}.chip-button{cursor:pointer;min-height:36px}.chip-positive{background:var(--accent-soft);color:var(--accent-soft-text);border-color:transparent;font-weight:700;cursor:pointer}.chip-quiet{background:transparent}.chip-warn{background:var(--warn-soft);color:var(--warn);border-color:transparent}.field{display:flex;flex-direction:column;gap:.25rem;border:0;padding:0;margin:0;min-width:0}.field>span,.field>label,.field>legend{font-weight:600;font-size:.875rem}input,select,textarea{font:inherit;color:var(--text);background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-sm);padding:.5rem .75rem;min-height:44px;max-width:100%}.checkbox,.radio{display:flex;align-items:center;gap:.5rem;font-weight:400;min-height:36px}.checkbox input,.radio input{min-height:auto;width:1.1rem;height:1.1rem;accent-color:var(--accent)}.segmented{display:inline-flex;border:1px solid var(--border);border-radius:10px;overflow:hidden}.segmented label{padding:.4rem .9rem;cursor:pointer}.segmented label.selected{background:var(--accent-soft);color:var(--accent);font-weight:600}.segmented input{position:absolute;opacity:0;pointer-events:none}.page-head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;margin-block-end:.75rem}.page-head h1{margin:0}.profile-picker{display:flex;flex-direction:column;gap:.75rem;margin-block-end:.5rem}.language-pair{display:grid;grid-template-columns:1fr auto 1fr;gap:.5rem;align-items:end}.reverse-button{margin-block-end:4px}.profile-options{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.75rem}.reading-aids{flex-direction:row;flex-wrap:wrap;gap:.75rem}@media(max-width:480px){.language-pair{grid-template-columns:1fr}.reverse-button{justify-self:center}}.composer{display:flex;flex-direction:column;gap:.5rem}.composer-text{width:100%;min-height:180px;resize:vertical;font-size:1.1rem;line-height:1.6;padding:.9rem 1rem;border-radius:var(--radius)}.composer-bar{display:flex;justify-content:space-between;align-items:center}.composer-bar .over{color:var(--danger);font-weight:700}.composer-actions{display:flex;flex-wrap:wrap;align-items:center;gap:.75rem}.idea{background:var(--accent-soft);border-radius:10px;padding:.5rem .75rem;margin:0}.ideas{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.5rem}.idea-option{background:var(--surface);border:1px dashed var(--border);border-radius:10px;padding:.5rem .75rem;font:inherit;color:var(--text);cursor:pointer;text-align:start}.idea-option[aria-pressed=true]{border-style:solid;border-color:var(--accent)}.onboarding{max-width:560px;margin-inline:auto}.small-heading{font-size:.95rem;color:var(--muted)}.pending ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.5rem}.pending-item{display:grid;gap:.25rem;background:var(--surface);border:1px dashed var(--border);border-radius:10px;padding:.5rem .75rem}.pending-text{overflow-wrap:anywhere}.result{margin-block-start:1rem}.result-meta{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:.5rem}.credit{display:flex;flex-wrap:wrap;gap:.4rem;align-items:center;position:relative}.credit-details{flex-basis:100%;background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:.75rem;font-size:.9rem}.credit-details ul{margin:.25rem 0 .5rem;padding-inline-start:1.2rem}.usage{margin:0}.output-view{font-size:1.15rem;line-height:2;white-space:pre-wrap;overflow-wrap:anywhere;padding-block:.25rem}.output-text{width:100%;font-size:1.1rem;line-height:1.6;resize:vertical}.edit-mark{font:inherit;color:inherit;background:var(--edit);border:0;border-block-end:2px solid var(--edit-border);border-radius:3px;padding:0 1px;cursor:pointer;line-height:inherit}.edit-mark.uncertain{border-block-end-style:dashed}.edit-marker{color:var(--edit-border);font-weight:700;padding-inline:2px}.romanization{color:var(--muted);font-style:italic;margin-block-start:.25rem}ruby{ruby-align:center}ruby rt{font-size:.6em;color:var(--muted)}.popover{position:absolute;z-index:15;width:min(320px,90vw);background:var(--surface);border:1px solid var(--border);border-radius:10px;box-shadow:var(--shadow);padding:.75rem}.edit-change del{color:var(--danger)}.edit-change ins{color:var(--accent);text-decoration:none;font-weight:700}.edit-tags{display:flex;gap:.4rem}.tag{font-size:.75rem;padding:.1rem .5rem;border-radius:999px;background:var(--surface-2)}.tag-uncertain{background:var(--warn-soft);color:var(--warn)}.expressive ul{margin:0;padding-inline-start:1.2rem}.expressive .orig{color:var(--muted)}.result-footer{display:flex;flex-direction:column;align-items:flex-start;gap:.25rem;margin-block:.5rem 1rem}.thumbs{display:inline-flex;gap:.1rem}.history-list{padding-inline-start:1.2rem}.account-panel{display:flex;flex-direction:column;gap:.75rem}.identity-list{margin:0;padding-inline-start:1.2rem}.account-actions{display:flex;flex-direction:column;gap:.75rem}.sign-out{border-block-start:1px solid 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