:root{--paper:#f7f3ea;--card:#fffdf7;--card-2:#f3eee2;--ink:#23201b;--ink-2:#4a453c;--muted:#7a7366;--line:#e3dccd;--line-2:#d4cbb8;--accent:#b8432f;--accent-soft:#f6e3dc;--indigo:#2f4b7c;--indigo-soft:#e2e8f3;--hl:#fbe9a6;--good:#2f7a4f;--good-soft:#dff0e4;--bad:#b33a3a;--bad-soft:#f7dfdf;--shadow:0 1px 2px #3c2d140f, 0 4px 16px #3c2d140f;--radius:14px;--jp:"Hiragino Mincho ProN", "Yu Mincho", "Noto Serif JP", "Songti SC", serif;--ui:-apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans", "Noto Sans SC", "Microsoft YaHei", sans-serif;--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light}@media (prefers-color-scheme:dark){:root:not([data-theme=light]){--paper:#16151a;--card:#1e1d23;--card-2:#26252c;--ink:#ece7de;--ink-2:#cfc8bb;--muted:#9a9387;--line:#34323a;--line-2:#45424c;--accent:#e0775f;--accent-soft:#3a2621;--indigo:#8fa9dc;--indigo-soft:#232b3b;--hl:#5a4a17;--good:#6fc08f;--good-soft:#1d3326;--bad:#e58080;--bad-soft:#3a2224;--shadow:0 1px 2px #0000004d, 0 4px 16px #00000040;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}}:root[data-theme=dark]{--paper:#16151a;--card:#1e1d23;--card-2:#26252c;--ink:#ece7de;--ink-2:#cfc8bb;--muted:#9a9387;--line:#34323a;--line-2:#45424c;--accent:#e0775f;--accent-soft:#3a2621;--indigo:#8fa9dc;--indigo-soft:#232b3b;--hl:#5a4a17;--good:#6fc08f;--good-soft:#1d3326;--bad:#e58080;--bad-soft:#3a2224;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}*{box-sizing:border-box}html,body{overscroll-behavior:none}html{-webkit-text-size-adjust:100%;scroll-padding-top:72px}body{background:var(--paper);color:var(--ink);font:15px/1.65 var(--ui);-webkit-font-smoothing:antialiased;margin:0}a{color:inherit}button,input,select{font:inherit;color:inherit}[hidden]{display:none!important}[lang=ja],.jp{font-family:var(--jp)}.topbar{z-index:20;background:color-mix(in srgb, var(--paper) 88%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);align-items:center;gap:18px;padding:10px 24px;display:flex;position:sticky;top:0}.brand{letter-spacing:.02em;align-items:center;gap:10px;font-weight:600;text-decoration:none;display:flex}.brand-mark{background:var(--accent);color:#fff;border-radius:8px;place-items:center;width:30px;height:30px;font-size:17px;display:grid}.topnav{gap:4px;display:flex}.topnav a{color:var(--ink-2);border-radius:8px;padding:6px 10px;text-decoration:none}.topnav a:hover{background:var(--card-2)}.topnav a.active{color:var(--ink);background:var(--card-2)}.controls{flex-wrap:wrap;align-items:center;gap:6px;margin-left:auto;display:flex}.toggle{border:1px solid var(--line-2);cursor:pointer;color:var(--muted);background:0 0;border-radius:999px;padding:3px 11px;font-size:13px}.toggle[aria-pressed=true]{background:var(--ink);color:var(--paper);border-color:var(--ink)}.rate{color:var(--muted);align-items:center;gap:4px;margin:0 4px;display:flex}.rate input{width:84px;accent-color:var(--accent)}.ico{flex:none;width:16px;height:16px}.btn{cursor:pointer;color:var(--muted);background:0 0;border:1px solid #0000;border-radius:8px;align-items:center;gap:5px;padding:4px 8px;font-size:13px;display:inline-flex}.btn:hover{background:var(--card-2);color:var(--ink)}.btn.on{background:var(--indigo-soft);color:var(--indigo)}.btn:disabled{opacity:.35;cursor:default}.btn.pill{border-color:var(--line-2);color:var(--ink-2);border-radius:999px;padding:5px 12px}.btn.pill:hover{border-color:var(--ink-2)}.btn.stop{color:var(--accent)}.btn.stop .btn-label{display:none}main{max-width:1120px;margin:0 auto;padding:32px 24px 96px}.eyebrow{letter-spacing:.08em;color:var(--muted);margin:0 0 6px;font-size:12.5px}h1{font-family:var(--jp);margin:0;font-size:34px;font-weight:600;line-height:1.35}h1 small{color:var(--muted);margin-left:12px;font-size:18px;font-weight:500;display:inline-block}.lede{color:var(--ink-2);max-width:62ch;margin:10px 0 0}.notice{background:var(--accent-soft);color:var(--ink);border:1px solid color-mix(in srgb, var(--accent) 35%, transparent);border-radius:10px;margin:16px 0;padding:10px 14px;font-size:14px}.notice.global{text-align:center;border-width:0 0 1px;border-radius:0;margin:0}.badge{background:var(--indigo-soft);color:var(--indigo);font-size:11.5px;font-family:var(--ui);vertical-align:middle;border-radius:999px;padding:1px 8px;font-weight:500;display:inline-block}.hero{border-bottom:1px solid var(--line);grid-template-columns:1.2fr 1fr;align-items:end;gap:32px;padding:20px 0 36px;display:grid}.cast-strip{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);flex-wrap:wrap;align-items:center;gap:8px;padding:14px;text-decoration:none;display:flex}.cast-strip:hover{border-color:var(--line-2)}.cast-strip-label{color:var(--muted);flex-basis:100%;justify-content:space-between;align-items:center;margin-top:4px;font-size:13px;display:flex}.unit-head{grid-template-columns:auto 1fr auto;align-items:start;gap:16px;margin-bottom:14px;display:grid}.unit-no{background:var(--ink);width:44px;height:44px;color:var(--paper);font:600 20px var(--jp);border-radius:50%;place-items:center;display:grid}.unit-intro{color:var(--muted);max-width:70ch;margin:4px 0 0;font-size:14px}.unit-page{color:var(--muted);padding-top:4px;font-size:13px}.lesson-list{grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px;margin:0;padding:0;list-style:none;display:grid}.lesson-card{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);opacity:.62}.lesson-card.ready{opacity:1;box-shadow:var(--shadow);border-color:var(--line-2)}.lesson-card.ready:hover{border-color:var(--accent)}.lesson-link{flex-direction:column;gap:4px;height:100%;padding:14px 16px;text-decoration:none;display:flex}.lesson-no{color:var(--accent);letter-spacing:.05em;font-size:12.5px;font-weight:600}.lesson-title{font-size:18px;line-height:1.7}.lesson-applied{color:var(--ink-2);font-size:13.5px}.lesson-blurb{color:var(--muted);font-size:13px}.lesson-meta{color:var(--muted);justify-content:space-between;margin-top:auto;padding-top:6px;font-size:12px;display:flex}.status{background:var(--card-2);border-radius:999px;padding:0 8px}.status.on{background:var(--good-soft);color:var(--good)}.jp{display:inline}ruby rt{color:var(--muted);font-size:.5em;font-family:var(--ui);letter-spacing:0}.no-furigana ruby rt{visibility:hidden}.phrase{vertical-align:bottom;font-family:var(--jp);cursor:default;text-align:left;background:0 0;border:0;border-radius:6px;flex-direction:column;align-items:flex-start;margin:0 1px;padding:0 3px;line-height:1.9;display:inline-flex}button.phrase{cursor:pointer}button.phrase:hover{background:var(--card-2);box-shadow:inset 0 -2px 0 var(--line-2)}.phrase.speaking{background:var(--hl);box-shadow:inset 0 -2px 0 var(--accent)}.phrase.your-turn{background:var(--indigo-soft);box-shadow:inset 0 -2px 0 var(--indigo)}.phrase .ro{font:11.5px/1.2 var(--ui);color:var(--indigo);letter-spacing:.02em;padding-bottom:2px;display:none}.show-romaji .phrase .ro{display:block}.hl{background:color-mix(in srgb, var(--line) 70%, transparent);border-radius:3px;padding:0 2px;font-weight:600}.ul{text-decoration:underline;-webkit-text-decoration-color:var(--accent);text-decoration-color:var(--accent);text-underline-offset:5px;text-decoration-thickness:1.5px}sup.star{color:var(--accent);margin-right:1px;font-size:.6em}.line{border-radius:12px;grid-template-columns:auto 1fr;gap:12px;padding:10px 12px;transition:background .15s;display:grid}.line+.line{margin-top:2px}.line.headless{grid-template-columns:1fr}.line.speaking,.line.shadowing{background:color-mix(in srgb, var(--hl) 35%, transparent)}.line.your-turn{background:var(--indigo-soft);position:relative;overflow:hidden}.line.your-turn:after{content:"轮到你说";color:var(--indigo);font-size:12px;font-weight:600;position:absolute;top:10px;right:12px}.line.your-turn:before{content:"";background:var(--indigo);height:3px;animation:turn var(--turn-ms,2.5s) linear forwards;position:absolute;bottom:0;left:0}@keyframes turn{0%{width:0}to{width:100%}}.line-num{font:600 18px/2.4 var(--jp);color:var(--muted);min-width:1.6em}.line-body{min-width:0}.line-body>.jp{font-size:22px}.line.compact .line-body>.jp{font-size:19px}.zh{color:var(--muted);margin:2px 0 0 4px;font-size:14px}.no-translation .zh{display:none}.tools{opacity:.55;flex-wrap:wrap;gap:2px;margin:4px 0 0 -4px;transition:opacity .15s;display:flex}.line:hover .tools,.line:focus-within .tools,.line.speaking .tools{opacity:1}.line.compact{padding:4px 8px}.line.compact .line-body{grid-template-columns:1fr auto;align-items:center;column-gap:8px;display:grid}.line.compact .line-body>:not(.tools){grid-column:1}.line.compact .tools{flex-wrap:nowrap;grid-area:1/2/span 2;margin:0}.line.compact .tools .btn-label{display:none}.line.compact .tools .btn{padding:4px 5px}.line.compact .breakdown,.line.compact .speech-check{grid-column:1/-1}ruby{ruby-align:center}@media (hover:none){.tools{opacity:1}}.speaker{flex-direction:column;align-items:center;gap:2px;min-width:52px;padding-top:6px;display:flex}.speaker-name{font:600 13px var(--jp);color:var(--c)}.avatar{object-fit:cover;border:2px solid color-mix(in srgb, var(--c,#999) 70%, transparent);background:#fff;border-radius:50%;flex:none}.avatar.sm{width:36px;height:36px}.avatar.md{width:46px;height:46px}.avatar.lg{width:92px;height:92px}.avatar.glyph{background:var(--c);color:#fff;font:600 15px var(--jp);border:0;place-items:center;display:grid}.avatar.lg.glyph{font-size:34px}.breakdown{background:var(--card-2);border:1px dashed var(--line-2);border-radius:12px;flex-wrap:wrap;gap:10px;margin:10px 0 4px;padding:12px;display:flex}.bd-phrase{background:var(--card);border:1px solid var(--line);border-radius:10px;flex-direction:column;gap:6px;padding:8px;display:flex}.bd-head{cursor:pointer;background:0 0;border:0;border-radius:6px;align-items:center;gap:6px;padding:2px 6px;font-size:18px;display:flex}.bd-head:hover,.bd-head.speaking{background:var(--hl)}.bd-head .ico{color:var(--accent);width:14px;height:14px}.bd-ro{font:12px var(--ui);color:var(--indigo)}.morae{flex-wrap:wrap;gap:4px;display:flex}.mora{border:1px solid var(--line);background:var(--paper);cursor:pointer;border-radius:8px;flex-direction:column;align-items:center;min-width:38px;padding:4px 6px 3px;display:flex}.mora:hover{border-color:var(--accent)}.mora.speaking{background:var(--hl);border-color:var(--accent)}.mora-k{font-size:20px;line-height:1.2}.mora-ro{color:var(--muted);font-size:11px}.speech-check{background:var(--card-2);border-radius:8px;margin:6px 0 0 4px;padding:6px 10px;font-size:13.5px}.speech-check.listening{background:var(--indigo-soft);color:var(--indigo)}.speech-check.good{background:var(--good-soft);color:var(--good)}.speech-check.ok{background:var(--hl)}.speech-check.low{background:var(--bad-soft);color:var(--bad)}.dialogue{border:1px solid var(--line);border-radius:var(--radius);background:var(--card);padding:6px}.dialogue+.dialogue{margin-top:12px}.dialogue-head{align-items:center;gap:10px;padding:6px 8px 4px;display:flex}.dlabel{background:var(--ink);width:26px;height:26px;color:var(--paper);border-radius:6px;place-items:center;font-size:14px;font-weight:700;display:grid}.dtitle{color:var(--ink-2);font-weight:600}.spacer{flex:1}.role-select{border:1px solid var(--line-2);background:var(--card);color:var(--ink-2);border-radius:999px;padding:4px 10px;font-size:13px}.stage{color:var(--muted);padding:6px 14px;font-size:14px;font-style:italic}.lesson-hero{grid-template-columns:auto 1fr;align-items:center;gap:28px;padding:12px 0 30px;display:grid}.hero-num{font-family:var(--jp);color:var(--muted);align-items:baseline;gap:6px;font-size:20px;display:flex}.hero-num b{color:var(--ink);font-size:96px;font-weight:400;line-height:1}.lesson-hero h1{font-size:36px}.lesson-hero h1 .phrase{line-height:1.6}.hero-actions{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.lesson-hero .unit-intro{margin-top:14px}.lesson-layout{grid-template-columns:180px 1fr;align-items:start;gap:28px;display:grid}.toc{flex-direction:column;gap:2px;font-size:14px;display:flex;position:sticky;top:76px}.toc a{color:var(--muted);border-left:2px solid #0000;border-radius:8px;padding:6px 10px;text-decoration:none}.toc a:hover{color:var(--ink);background:var(--card-2)}.toc a.on{color:var(--ink);border-left-color:var(--accent);background:var(--card)}.toc-back{align-items:center;gap:4px;margin-bottom:8px;display:flex}.toc rt{display:none}.sections{flex-direction:column;gap:22px;min-width:0;display:flex}.card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:22px 24px}.sec-head{justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;display:flex}.sec-head h2{letter-spacing:.12em;background:var(--ink);color:var(--paper);border-radius:999px;align-items:baseline;gap:10px;margin:0;padding:5px 18px;font-size:17px;display:inline-flex}.sec-head h2 small{letter-spacing:0;opacity:.75;font-size:13px;font-weight:400}.sec-head h2 rt{color:inherit;opacity:.7}.page-link{border:1px solid var(--line-2);cursor:pointer;color:var(--muted);background:0 0;border-radius:999px;align-items:center;gap:4px;padding:3px 10px;font-size:12.5px;display:inline-flex}.page-link:hover{color:var(--accent);border-color:var(--accent)}.basic-box{background:var(--card-2);border-radius:16px;margin-bottom:18px;padding:10px 8px}.basic-box .line-body>.jp{font-size:24px}.dialogues{grid-template-columns:1fr 1fr;gap:12px;display:grid}.dialogues .dialogue+.dialogue{margin-top:0}.word-strip{border-top:1.5px solid var(--line-2);flex-wrap:wrap;align-items:center;gap:6px;margin-top:18px;padding-top:12px;display:flex}.word-strip-label{color:var(--muted);margin-right:4px;font-size:12.5px}.word-chip{border:1px solid var(--line);background:var(--paper);cursor:pointer;border-radius:8px;align-items:baseline;gap:6px;padding:3px 9px;font-size:15px;display:inline-flex}.word-chip small{color:var(--muted);font-size:12px}.word-chip:hover,.word-chip.speaking{border-color:var(--accent);background:var(--hl)}.point{padding:6px 0 18px}.point+.point{border-top:1px dashed var(--line-2);padding-top:18px}.point-title{flex-wrap:wrap;align-items:center;gap:10px;margin:0 0 8px;font-size:20px;display:flex}.point-no{font:600 15px var(--ui);color:var(--accent)}.pattern{font-weight:600}.slot{border:1.5px solid var(--ink-2);font:600 .8em/1.3 var(--ui);vertical-align:2px;border-radius:4px;margin:0 2px;padding:0 4px;display:inline-block}.tag{color:var(--muted);font-size:14px;font-weight:400}.point-sub{margin:14px 0 4px;font-size:16px}.point p{color:var(--ink-2);margin:6px 0}.point p rt{font-size:.55em}.note{background:var(--accent-soft);border-radius:10px;padding:8px 12px}.note-tag{background:var(--accent);color:#fff;border-radius:999px;margin-right:8px;padding:0 8px;font-size:12px;display:inline-block}.example{margin:6px 0 6px 6px}.ctx{color:var(--muted);margin-left:30px;font-size:13.5px}.bullet{color:var(--accent);min-width:1em;padding-top:10px;font-size:14px}.bullet.dash{color:var(--muted);padding-left:12px}.wtable{border:1px solid var(--line-2);border-radius:12px;overflow:hidden}.wtable+.wtable{margin-top:14px}.wrow{grid-template-columns:repeat(3,1fr);display:grid}.wrow+.wrow{border-top:1px solid var(--line)}.whead{background:var(--card-2);font-weight:600}.whead>div,.whead.single{text-align:center;padding:8px 14px;font-size:16px}.wcell{cursor:pointer;text-align:left;background:0 0;border:0;align-items:baseline;gap:10px;padding:7px 14px;display:flex}.wrow .wcell+.wcell{border-left:1px solid var(--line)}.wcell:hover,.wcell.speaking{background:var(--hl)}.wjp{font-size:17px}.wzh{color:var(--muted);font-size:13px}.wgrid{border-top:1px solid var(--line);grid-template-columns:repeat(3,1fr);display:grid}.scene{border-left:3px solid var(--ink);background:var(--card-2);color:var(--ink-2);border-radius:0 10px 10px 0;margin:0 0 14px;padding:10px 14px}.sec-scene .line-body>.jp{font-size:22px}.exercise{padding:4px 0 20px}.exercise+.exercise{border-top:1px dashed var(--line-2);padding-top:18px}.ex-head{align-items:center;gap:8px;margin-bottom:10px;font-weight:600;display:flex}.ex-no{color:var(--accent)}.ex-image{border:1px solid var(--line);background:#fff;border-radius:10px;max-width:100%;margin:6px 0 12px;display:block}.ex-group+.ex-group{margin-top:16px}.ex-example{background:var(--card-2);border-radius:10px;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:8px;padding:6px 10px;display:flex}.ex-example>.line,.ex-example>.dialogue,.ex-example>.ex-item-body{flex:100%}.ex-group>.dialogue{margin-bottom:8px}.ex-label{color:var(--muted);font-weight:600}.arrow{color:var(--muted)}.cue{font-size:18px}.ex-item{grid-template-columns:2.6em 1fr;gap:6px;padding:6px 0;display:grid}.ex-num{color:var(--muted);font-variant-numeric:tabular-nums;padding-top:4px}.ex-item-body{min-width:0}.ex-q{flex-wrap:wrap;align-items:center;gap:6px;display:flex}.reveal{margin-top:6px}.result{color:var(--muted);align-items:center;gap:4px;font-size:13px;display:inline-flex}.result .ico{color:var(--good);width:20px;height:20px}.choice{border:1.5px solid var(--line-2);background:var(--card);cursor:pointer;border-radius:999px;padding:2px 12px;font-size:17px}.choice:hover{border-color:var(--ink-2)}.choice.correct{border-color:var(--good);background:var(--good-soft);box-shadow:0 0 0 3px color-mix(in srgb, var(--good) 25%, transparent)}.choice.wrong{border-color:var(--bad);background:var(--bad-soft);animation:.3s shake}@keyframes shake{25%{transform:translate(-3px)}75%{transform:translate(3px)}}.choice-line,.fill-line{font-size:19px;line-height:2.2}.choice-group{white-space:nowrap}.choice-group .choice{margin:0 2px}.dot,.dash,.paren{color:var(--muted)}.fill-block{flex-direction:column;display:flex}.fill-row{align-items:baseline;gap:4px;font-size:19px;display:flex}.fill-row .who{color:var(--muted);min-width:1.6em}.blank{border:0;border-bottom:2px solid var(--line-2);background:var(--card-2);width:8em;font-family:var(--jp);color:var(--ink);border-radius:6px 6px 0 0;padding:2px 8px;font-size:18px}.blank:focus{border-bottom-color:var(--indigo);outline:none}.blank.wide{width:min(26em,100%)}.blank.correct{border-bottom-color:var(--good);background:var(--good-soft)}.blank.wrong{border-bottom-color:var(--bad);background:var(--bad-soft)}.zh-prompt{margin-bottom:6px;font-size:16px}.reorder{flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:6px;display:flex}.pool,.tray{border-radius:10px;flex-wrap:wrap;gap:6px;min-height:42px;padding:4px;display:flex}.pool{background:0 0}.tray{border:1.5px dashed var(--line-2);background:var(--card-2);flex:1;min-width:220px}.tray.correct{border:1.5px solid var(--good);background:var(--good-soft)}.tray.wrong{border-color:var(--bad)}.tray-end{font-family:var(--jp);color:var(--muted);font-size:18px}.tile{border:1px solid var(--line-2);background:var(--card);cursor:pointer;box-shadow:0 1px 0 var(--line-2);border-radius:8px;padding:2px 10px;font-size:17px}.tile:hover{border-color:var(--accent)}.answers .line{padding:4px 8px}.vgroup+.vgroup{margin-top:18px}.vgroup h3{color:var(--muted);letter-spacing:.1em;margin:0 0 8px;font-size:14px;font-weight:600}.vlist{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:2px 18px;display:grid}.vrow{border:0;border-bottom:1px solid var(--line);text-align:left;cursor:pointer;background:0 0;grid-template-rows:auto auto;grid-template-columns:auto auto 1fr;align-items:baseline;column-gap:8px;padding:8px 6px 6px;display:grid}.vrow:hover,.vrow.speaking{background:var(--hl)}.vkana{grid-area:1/1}.vword{color:var(--ink-2);grid-area:1/2;font-size:15px}.vpos{color:var(--muted);grid-area:1/3;font-size:12.5px}.vzh{color:var(--muted);grid-area:2/1/auto/-1;font-size:13.5px}.acc{white-space:nowrap;flex-wrap:nowrap;align-items:flex-end;max-width:100%;padding-top:4px;font-size:19px;display:inline-flex}.acc.acc-long{font-size:16px}.acc>span:not(.acc-num){border-top:1.5px solid #0000;padding:2px 1px 0;position:relative}.acc>span.hi{border-top-color:var(--accent)}.acc>span.rise:before,.acc>span.drop:after{content:"";border-left:1.5px solid var(--accent);height:.5em;position:absolute;top:-1.5px}.acc>span.rise:before{left:0}.acc>span.drop:after{right:0}.acc-num{font:600 10px var(--ui);color:var(--accent);border:1px solid var(--accent);border-radius:50%;align-self:center;place-items:center;width:15px;height:15px;margin-left:4px;display:inline-grid}.column-zh p{text-indent:2em;color:var(--ink-2);margin:0 0 10px}.column-ja{border:1px solid var(--line);border-radius:12px;margin-top:12px;padding:4px 12px}.column-ja summary{cursor:pointer;flex-wrap:wrap;align-items:center;gap:8px;padding:8px 0;font-weight:600;display:flex}.ja-para{border-top:1px dashed var(--line);padding:6px 0}.ja-para .line-body>.jp{font-size:17px}.page-head .page-link{margin-top:12px}.cast-grid{grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:16px;display:grid}.cast-card{background:var(--card);border:1px solid var(--line);border-top:4px solid var(--c);box-shadow:var(--shadow);border-radius:16px;grid-template-rows:1fr auto;grid-template-columns:auto 1fr;gap:16px;padding:18px;display:grid}.cast-info{min-width:0}.cast-info h2{margin:0;font-size:22px}.cast-info h2 .phrase{line-height:1.7}.cast-zh{color:var(--muted);margin:0;font-size:13.5px}.cast-bio{color:var(--ink-2);margin:6px 0 10px;font-size:14px}.cast-line{border-top:1px dashed var(--line-2);flex-wrap:wrap;grid-column:1/-1;align-items:center;gap:12px;padding-top:12px;display:flex}.cast-line .jp{font-size:17px}.cast-line .btn.pill{background:color-mix(in srgb, var(--c) 16%, transparent);color:var(--ink);border-color:color-mix(in srgb, var(--c) 45%, transparent)}.cast-line.speaking .btn.pill{background:var(--c);color:#fff}.slider{color:var(--muted);grid-template-columns:3em 1fr 3em;align-items:center;gap:8px;font-size:13px;display:grid}.slider input{accent-color:var(--c,var(--accent));width:100%}.slider output{font-variant-numeric:tabular-nums;text-align:right}h2.sub{margin:36px 0 14px;font-size:18px}.provider-card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:16px;margin-bottom:20px;padding:16px 18px}.provider-card h2{margin:0 0 10px;font-size:16px}.style-field{color:var(--muted);flex-direction:column;gap:4px;font-size:13px;display:flex}.style-field textarea{font:13px/1.45 var(--ui);color:var(--ink);background:var(--paper);border:1px solid var(--line-2);resize:vertical;border-radius:8px;padding:6px 8px}.topbar.tts-loading .btn.stop{animation:1s ease-in-out infinite pulse}@keyframes pulse{50%{opacity:.35}}.cast-page>.provider-card{margin-top:24px}.story{border:1.5px solid var(--line-2);background:var(--card);color:var(--ink-2);border-radius:16px;margin-top:32px;padding:18px 22px}.story p{text-indent:2em;margin:0 0 8px}.pageview{z-index:50;overscroll-behavior:contain;background:#14120eb8;flex-direction:column;align-items:center;gap:10px;padding:16px;display:flex;position:fixed;inset:0;overflow:auto}.pageview-bar{background:var(--card);color:var(--ink);border-radius:999px;align-items:center;gap:12px;padding:4px 8px 4px 12px;font-size:13.5px;display:flex;position:sticky;top:0}.pageview-bar .close{margin-left:8px}.pageview img{background:#fff;border-radius:6px;max-width:min(860px,100%);height:auto;box-shadow:0 10px 40px #0006}@media (width<=900px){.lesson-layout{grid-template-columns:1fr}.toc{z-index:10;background:var(--paper);padding:6px 0;border-bottom:1px solid var(--line);flex-direction:row;gap:4px;margin:0 -16px;padding-inline:16px;position:sticky;top:56px;overflow-x:auto}.toc a{white-space:nowrap;border-bottom:2px solid #0000;border-left:0;border-radius:8px 8px 0 0}.toc a.on{border-bottom-color:var(--accent)}.toc-back{margin:0}.dialogues,.hero{grid-template-columns:1fr}}@media (width<=640px){.topbar{flex-wrap:wrap;gap:10px;padding:8px 16px}.topnav{order:3;width:100%}.controls{margin-left:auto}.rate{display:none}main{padding:20px 16px 80px}h1{font-size:26px}.lesson-hero{grid-template-columns:1fr;gap:6px}.hero-num b{font-size:64px}.lesson-hero h1{font-size:26px}.card{border-radius:14px;padding:16px 12px}.line{gap:8px;padding:8px 6px}.line-body>.jp,.basic-box .line-body>.jp{font-size:19px}.wrow,.wgrid{grid-template-columns:1fr 1fr 1fr}.wcell{flex-direction:column;gap:0;padding:6px 8px}.wjp{font-size:15px}.tools .btn-label{display:none}.cast-grid,.cast-card,.vlist{grid-template-columns:1fr}.toc{top:92px}}.auth-page{background:var(--paper);min-height:100dvh}.auth-page.phone{padding:calc(28px + env(safe-area-inset-top)) 24px calc(32px + env(safe-area-inset-bottom));flex-direction:column;gap:26px;display:flex}.auth-page.desktop{grid-template-columns:1fr 560px;gap:24px;height:100dvh;padding:24px;display:grid}.auth-brand{align-items:center;gap:10px;font-size:16px;display:flex}.auth-brand .brand-mark{border-radius:10px;width:36px;height:36px;font-size:20px}.auth-visual{color:#f7f3ea;background:#23201b;border-radius:24px;flex-direction:column;justify-content:space-between;padding:56px;display:flex}.auth-visual small{color:#9a9387;font-size:13px}.auth-quote{font:700 56px/1.25 var(--jp);margin:0}.auth-quote-zh{color:#cfc8bb;margin:14px 0 0;font-size:18px}.auth-side{place-items:center;display:grid}.auth-side .auth-form{width:380px}.auth-form{flex-direction:column;flex:1;gap:26px;display:flex}.auth-heading h1{font:700 30px/1.3 var(--jp);margin:0}.desktop .auth-heading h1{font-size:34px}.auth-heading p{color:var(--ink-2);margin:6px 0 0}.auth-tabs{background:var(--card-2);border-radius:22px;gap:4px;height:44px;padding:4px;display:flex}.auth-tabs button{color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:18px;flex:1;font-weight:500;transition:background-color .15s,color .15s}.auth-tabs button[aria-selected=true]{background:var(--card);color:var(--ink);font-weight:700;box-shadow:0 1px 3px #3c2d1414}.auth-fields{flex-direction:column;gap:16px;display:flex}.field{flex-direction:column;gap:6px;display:flex}.field>span:first-child{color:var(--ink-2);font-size:13px;font-weight:600}.field small{color:var(--muted);font-size:12px}.field small.bad{color:var(--accent)}.field input,.field-box{border:1px solid var(--line-2);background:var(--card);border-radius:12px;width:100%;height:50px;padding:0 16px;font-size:16px}.field input:focus,.field-box:focus-within{border-color:var(--ink);box-shadow:0 0 0 1px var(--ink);outline:none}.field input::placeholder{color:var(--muted)}.field-box{align-items:center;gap:8px;padding-right:6px;display:flex}.field-box input{background:0 0;border:0;height:100%;padding:0;box-shadow:none!important}.field-eye{width:38px;height:38px;color:var(--muted);cursor:pointer;background:0 0;border:0;place-items:center;display:grid}.auth-error{background:var(--accent-soft);color:var(--accent);border-radius:10px;align-items:center;gap:8px;margin:0;padding:10px 12px;font-size:13px;display:flex}.auth-submit{background:var(--ink);height:52px;color:var(--paper);cursor:pointer;border:0;border-radius:26px;justify-content:center;align-items:center;gap:8px;font-size:16px;font-weight:600;display:flex}.auth-submit:disabled{opacity:.6;cursor:progress}.auth-foot{text-align:center;color:var(--muted);margin:auto 0 0;font-size:12px}.desktop .auth-foot{margin-top:0}.account{flex-direction:column;gap:10px;margin-bottom:28px;display:flex}.account-card{background:var(--card);border:1px solid var(--line);border-radius:14px;align-items:center;gap:14px;padding:16px;display:flex}.account-avatar{background:var(--indigo-soft);width:48px;height:48px;color:var(--indigo);border-radius:50%;flex:none;place-items:center;font-size:20px;font-weight:700;display:grid}.account-who{flex-direction:column;flex:1;min-width:0;display:flex}.account-who b{font-size:16px}.account-who small{color:var(--muted);text-overflow:ellipsis;white-space:nowrap;font-size:13px;overflow:hidden}.account-stats{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.account-stats span{background:var(--card-2);border-radius:12px;flex-direction:column;padding:14px;display:flex}.account-stats b{font-size:22px;line-height:1.2}.account-stats small{color:var(--muted);font-size:12px}.auth-submit.secondary{background:var(--card);color:var(--ink);border:1px solid var(--line-2)}.auth-link{color:var(--accent);cursor:pointer;background:0 0;border:0;align-self:center;padding:4px;font-size:14px}.auth-link.left{align-self:flex-start;margin-top:-8px;padding:0;font-size:13px}.auth-link:hover{text-decoration:underline}.auth-note{color:var(--muted);margin:0;font-size:13px}.auth-heading h1 svg{vertical-align:-3px}.shell main{max-width:none;margin:0;padding:0}.shell.desktop{grid-template-columns:240px 1fr;min-height:100vh;display:grid}.shell.desktop.in-step{grid-template-columns:72px 1fr}.shell-main{min-width:0}.shell.phone{padding-top:env(safe-area-inset-top);padding-bottom:calc(92px + env(safe-area-inset-bottom))}.shell.phone.in-step{padding-top:0;padding-bottom:env(safe-area-inset-bottom)}.sidebar{background:var(--card);border-right:1px solid var(--line);flex-direction:column;gap:6px;height:100vh;padding:24px 16px;display:flex;position:sticky;top:0}.sidebar.slim{align-items:center;padding:24px 0}.sidebar .brand{align-items:center;gap:10px;padding:0 8px 18px;text-decoration:none;display:flex}.sidebar.slim .brand{padding:0 0 18px}.brand-mark{background:var(--accent);color:#fff;width:34px;height:34px;font:700 19px var(--jp);border-radius:9px;place-items:center;display:grid}.brand-text{flex-direction:column;line-height:1.3;display:flex}.brand-text small{color:var(--muted);font-size:11px}.side-link{color:var(--ink-2);border-radius:12px;align-items:center;gap:12px;padding:10px 12px;font-size:14px;text-decoration:none;display:flex}.sidebar.slim .side-link{justify-content:center;width:44px;height:44px;padding:0;position:relative}.side-link:hover{background:var(--card-2)}.side-link.active{background:var(--accent-soft);color:var(--accent);font-weight:700}.side-link .count{font:700 11px Inter, var(--ui);background:var(--indigo-soft);color:var(--indigo);border-radius:999px;margin-left:auto;padding:1px 8px}.sidebar.slim .side-link .count{padding:0 5px;position:absolute;top:2px;right:0}.push{flex:1}.engine-card{background:var(--paper);border-radius:14px;flex-direction:column;gap:4px;padding:12px;font-size:13px;display:flex}.engine-label{color:var(--muted);font-size:11px;font-weight:600}.engine-name{align-items:center;gap:8px;font-weight:600;display:flex}.dot{background:var(--line-2);border-radius:50%;width:8px;height:8px;display:inline-block}.dot.ok{background:var(--good)}.dot.bad{background:var(--bad)}.engine-stop{color:var(--accent);cursor:pointer;background:0 0;border:0;align-items:center;gap:6px;padding:4px 0 0;font-size:12px;display:inline-flex}.tts-loading .engine-stop,.tts-loading .play-big{animation:1s ease-in-out infinite pulse}.tabbar{left:16px;right:16px;bottom:calc(12px + env(safe-area-inset-bottom));z-index:30;border:1px solid var(--line);background:color-mix(in srgb, var(--card) 90%, transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-radius:30px;justify-content:space-around;height:60px;padding:6px;display:flex;position:fixed;box-shadow:0 6px 20px #3c2d141a}.tab{color:var(--muted);border-radius:24px;flex-direction:column;flex:1;justify-content:center;align-items:center;gap:2px;font-size:10px;text-decoration:none;display:flex;position:relative}.tab.active{background:var(--accent-soft);color:var(--accent);font-weight:700}.tab-dot{background:var(--accent);border-radius:50%;width:8px;height:8px;position:absolute;top:6px;right:calc(50% - 18px)}.shell .page{max-width:1200px;padding:32px 44px 64px}.show-romaji span.phrase .ro{display:none}.shell.phone .page{padding:16px 20px 32px}.page-head{margin-bottom:20px}.muted{color:var(--muted)}.small{font-size:12.5px}.mono{font-family:Inter, var(--ui);font-variant-numeric:tabular-nums;font-size:12px}.center{text-align:center}.chip{background:var(--card-2);color:var(--ink-2);border-radius:999px;align-items:center;gap:6px;padding:4px 10px;font-size:12px;display:inline-flex}.chip.accent{background:var(--accent-soft);color:var(--accent)}.back-link{color:var(--muted);align-items:center;gap:4px;margin-bottom:12px;font-size:13px;text-decoration:none;display:inline-flex}.btn-primary,.btn-secondary,.btn-ghost{min-height:48px;font:600 15px var(--ui);cursor:pointer;border:1px solid #0000;border-radius:999px;justify-content:center;align-items:center;gap:8px;padding:0 22px;text-decoration:none;display:inline-flex}.btn-primary{background:var(--ink);color:var(--paper)}.btn-primary:hover{background:color-mix(in srgb, var(--ink) 85%, var(--accent))}.btn-primary:disabled{opacity:.35;cursor:default}.btn-secondary{background:var(--card);color:var(--ink-2);border-color:var(--line-2)}.btn-secondary:hover{border-color:var(--ink-2)}.btn-ghost{color:var(--muted);background:0 0}.btn-primary.wide,.btn-secondary.wide{width:100%;margin-top:8px}.icon-btn{background:var(--card-2);width:36px;height:36px;color:var(--ink-2);cursor:pointer;border:0;border-radius:50%;flex:none;place-items:center;text-decoration:none;display:inline-grid}.icon-btn.round{width:44px;height:44px}.icon-btn.dark{background:var(--ink);color:var(--paper)}.notice .icon-btn{vertical-align:middle;background:0 0;width:24px;height:24px}.segmented{background:var(--card-2);border-radius:999px;gap:4px;padding:4px;display:flex}.segmented button{min-height:36px;color:var(--muted);font:13px var(--ui);cursor:pointer;background:0 0;border:0;border-radius:999px;flex:1;justify-content:center;align-items:center;gap:6px;padding:0 14px;display:inline-flex}.segmented button[aria-pressed=true]{background:var(--card);color:var(--ink);font-weight:600;box-shadow:0 1px 4px #3c2d141f}.mode-bar .segmented button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.home-head h1{margin:2px 0 0;font-size:34px}.home-top{grid-template-columns:1fr 380px;gap:20px;margin:24px 0 36px;display:grid}.shell.phone .home-top{grid-template-columns:1fr}.continue-card{background:var(--ink);color:var(--paper);border-radius:24px;flex-direction:column;gap:16px;padding:26px;display:flex}.cc-head{color:#d9d2c3;justify-content:space-between;align-items:center;font-size:13px;display:flex}.pill{color:#f7f3ea;background:#ffffff1f;border-radius:999px;padding:3px 10px;font-size:12px}.cc-title{font:700 32px/1.6 var(--jp)}.cc-title rt{color:#b8b0a2}.cc-title .phrase{padding:0}.cc-steps{gap:8px;display:flex}.cc-steps span{color:#9c9488;flex-direction:column;flex:1;gap:6px;font-size:12px;display:flex}.cc-steps i{background:#ffffff2e;border-radius:3px;height:5px}.cc-steps .done{color:#f7f3ea}.cc-steps .done i{background:var(--accent)}.cc-steps .now{color:#f7f3ea}.cc-steps .now i{background:#b8432f80}.cc-button{background:var(--paper);color:var(--ink);border-radius:999px;align-self:flex-start;align-items:center;gap:8px;padding:13px 24px;font-weight:700;text-decoration:none;display:inline-flex}.shell.phone .cc-button{justify-content:center;align-self:stretch}.home-side{flex-direction:column;gap:20px;display:flex}.review-card,.cast-strip{background:var(--card);border:1px solid var(--line);border-radius:20px;align-items:center;gap:12px;padding:18px 20px;text-decoration:none;display:flex}.review-card>span:nth-child(2){flex-direction:column;flex:1;display:flex}.review-card small{color:var(--muted);font-size:12.5px}.icon-wrap{background:var(--indigo-soft);width:40px;height:40px;color:var(--indigo);border-radius:12px;place-items:center;display:grid}.cast-strip{flex-direction:column;align-items:flex-start}.cast-faces{flex-wrap:wrap;gap:8px;display:flex}.unit{margin-top:8px}.unit-head{justify-content:space-between;align-items:end;gap:16px;margin-bottom:14px;display:flex}.unit-head h2{margin:0;font-size:22px}.unit-art{object-fit:cover;object-position:center 30%;border:1px solid var(--line);background:#fff;border-radius:16px;width:100%;height:150px;margin-bottom:14px}.lesson-grid{grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:0;padding:0;list-style:none;display:grid}.lesson-card{border:1px solid var(--line);background:var(--card);opacity:.6;border-radius:18px}.lesson-card.ready{opacity:1}.lesson-card.current{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}.lesson-card>a,.lesson-card>div{flex-direction:column;gap:6px;height:100%;padding:16px 18px;text-decoration:none;display:flex}.lc-head{color:var(--muted);justify-content:space-between;align-items:center;display:flex}.lc-no,.lc-pct{color:var(--accent);font-size:12px;font-weight:700}.lc-title{font-size:18px;line-height:1.7}.lc-applied{color:var(--muted);font-size:12px}.lc-track{background:var(--line);border-radius:2px;height:4px;margin-top:auto;overflow:hidden}.lc-track i{background:var(--accent);height:100%;display:block}.overview-hero h1{font-size:38px}.overview-hero h1 .phrase{line-height:1.6}.overview-grid{grid-template-columns:340px 1fr;align-items:start;gap:32px;margin-top:24px;display:grid}.shell.phone .overview-grid{grid-template-columns:1fr;gap:20px}.goals{background:var(--accent-soft);border-radius:20px;padding:18px 20px}.goals b{color:var(--accent);font-size:13px}.goals ul{flex-direction:column;gap:8px;margin:10px 0 0;padding:0;list-style:none;display:flex}.goals li{gap:8px;font-size:14px;display:flex}.goals li svg{color:var(--accent);flex:none;margin-top:3px}.timeline{margin:0;padding:0;list-style:none}.tl-step{grid-template-columns:32px 1fr;gap:14px;display:grid}.tl-rail{justify-content:center;display:flex;position:relative}.tl-step:not(:last-child) .tl-rail:after{content:"";background:var(--line-2);width:2px;position:absolute;top:34px;bottom:0}.tl-step.done:not(:last-child) .tl-rail:after{background:var(--good)}.step-dot{background:var(--card);border:1.5px solid var(--line-2);width:32px;height:32px;color:var(--muted);font:700 13px Inter, var(--ui);border-radius:50%;flex:none;place-items:center;display:grid}.done>*>.step-dot,.done .step-dot{background:var(--good);border-color:var(--good);color:#fff}.now>*>.step-dot,.now .step-dot{background:var(--accent);border-color:var(--accent);color:#fff}.tl-body{flex-direction:column;gap:4px;padding:4px 0 22px;text-decoration:none;display:flex}.tl-top{justify-content:space-between;display:flex}.tl-top b{font-size:17px}.tl-step.todo .tl-top b{color:var(--muted)}.tl-desc{color:var(--ink-2);font-size:13px}.tl-body .btn-primary{align-self:flex-start;margin-top:8px}.book-mode-link{color:var(--muted);justify-content:center;align-items:center;gap:8px;margin-top:20px;font-size:13px;text-decoration:none;display:flex}.step-layout{grid-template-columns:280px minmax(0,1fr);min-height:100vh;display:grid}.step-layout.wide{grid-template-columns:280px minmax(0,1fr) 340px}.path-rail{overscroll-behavior:contain;border-right:1px solid var(--line);flex-direction:column;gap:16px;height:100vh;padding:26px 20px;display:flex;position:sticky;top:0;overflow-y:auto}.rail-back{color:var(--muted);align-items:center;gap:4px;font-size:12px;text-decoration:none;display:inline-flex}.rail-title{flex-direction:column;gap:2px;font-size:19px;text-decoration:none;display:flex}.rail-title .phrase{padding:0;line-height:1.7}.rail-title .muted{font-size:12.5px}.eyebrow{letter-spacing:.06em;color:var(--accent);margin:0;font-size:12px;font-weight:700}.rail-steps{flex-direction:column;gap:4px;margin:0;padding:0;list-style:none;display:flex}.rail-step-head{border-radius:12px;align-items:center;gap:10px;padding:8px 10px;font-size:15px;text-decoration:none;display:flex}.rail-step-head .step-dot{width:26px;height:26px;font-size:12px}.rail-step.now>.rail-step-head{background:var(--card);border:1px solid var(--line);font-weight:700}.rail-step.todo>.rail-step-head{color:var(--muted)}.rail-subs{flex-direction:column;gap:2px;margin:2px 0 4px;padding:0 0 0 46px;list-style:none;display:flex}.rail-sub{color:var(--muted);border-radius:8px;padding:6px 10px;font-size:13px;text-decoration:none;display:block}.rail-sub.done{color:var(--ink)}.rail-sub.done:before{content:"✓ ";color:var(--good)}.rail-sub.now{background:var(--accent-soft);color:var(--accent);font-weight:700}.goal-card{background:var(--accent-soft);border-radius:14px;padding:14px;font-size:12.5px}.goal-card b{color:var(--accent)}.goal-card ul{color:var(--ink-2);margin:6px 0 0;padding-left:18px;line-height:1.6}.shell .step-main{flex-direction:column;gap:20px;width:100%;min-width:0;max-width:860px;padding:30px 40px 48px;display:flex}.step-layout .step-main{justify-self:center}.step-head{justify-content:space-between;align-items:flex-start;gap:16px;display:flex}.step-title{margin:6px 0 0;font-size:28px}.step-lede{color:var(--ink-2);margin:-8px 0 0}.display-toggles{border:1px solid var(--line-2);background:var(--card);border-radius:999px;flex:none;gap:2px;height:36px;padding:3px;display:flex}.display-toggles button{min-width:40px;color:var(--muted);cursor:pointer;-webkit-tap-highlight-color:transparent;background:0 0;border:0;border-radius:999px;place-items:center;padding:0 10px;line-height:1;transition:background-color .12s,color .12s;display:grid}@media (hover:hover){.display-toggles button[aria-pressed=false]:hover{color:var(--ink)}}.display-toggles button[aria-pressed=true]{background:var(--ink);color:var(--paper)}.display-toggles button:focus-visible{outline:2px solid var(--accent);outline-offset:1px}.display-toggles ruby{font:600 12px/1 var(--jp);ruby-position:over}.display-toggles rt,.no-furigana .display-toggles rt{visibility:visible;font:500 7.5px/1 var(--jp);padding-bottom:1px}.display-toggles i{font:italic 600 14px/1 var(--ui)}.display-toggles b{font:700 13px/1 var(--ui)}.context-panel{overscroll-behavior:contain;background:var(--card);border-left:1px solid var(--line);height:100vh;padding:26px 22px;position:sticky;top:0;overflow-y:auto}.context-panel.drawer{z-index:40;width:360px;position:fixed;top:0;right:0;box-shadow:-12px 0 40px #281e0a2e}.panel-stack{flex-direction:column;gap:14px;display:flex}.panel-title{font-size:13px;font-weight:700}.panel-row{justify-content:space-between;align-items:center;gap:8px;display:flex}.page-thumb{text-align:left;cursor:zoom-in;background:0 0;border:0;flex-direction:column;gap:8px;padding:0;display:flex}.page-thumb img{object-fit:contain;border:1px solid var(--line);background:#fff;border-radius:10px;width:100%;height:300px}.tip-card{background:var(--indigo-soft);color:var(--ink-2);border-radius:12px;flex-direction:column;gap:4px;padding:12px;font-size:12.5px;display:flex}.tip-card b{color:var(--indigo);font-size:14px}.tier-progress{background:var(--paper);border-radius:12px;flex-direction:column;gap:2px;padding:12px;display:flex}.cast-row{text-align:left;cursor:pointer;color:var(--muted);background:0 0;border:0;border-radius:14px;align-items:center;gap:12px;padding:10px;display:flex}.cast-row.on{background:var(--indigo-soft);color:var(--indigo)}.cast-row img{object-fit:cover;background:#fff;border:2px solid;border-radius:50%;width:40px;height:40px}.cast-row>span{color:var(--ink);flex-direction:column;flex:1;display:flex}.cast-row small{color:var(--muted)}.dot-grid{grid-template-columns:repeat(7,1fr);gap:6px;display:grid}.dot-grid i{background:var(--line);border-radius:5px;height:18px}.dot-grid i.good{background:var(--good)}.dot-grid i.bad{background:var(--bad)}.dot-grid i.now{background:var(--accent-soft);box-shadow:inset 0 0 0 1.5px var(--accent)}.inspect{flex-direction:column;gap:12px;display:flex}.inspect-head{align-items:center;gap:8px;display:flex}.inspect-head .panel-title{flex:1}.inspect-sentence{font-size:20px}.inspect .breakdown{background:0 0;border:0;margin:0;padding:0}.inspect-note{color:var(--accent);align-items:center;gap:6px;margin:0;font-size:12px;display:flex}.step-phone{min-height:100dvh}.step-top{z-index:20;padding:calc(12px + env(safe-area-inset-top)) 16px 12px;background:color-mix(in srgb, var(--paper) 92%, transparent);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);align-items:center;gap:12px;display:flex;position:sticky;top:0}.step-top .icon-btn{background:0 0}.seg-bar{flex:1;gap:4px;display:flex}.seg-bar i{background:var(--line);border-radius:3px;flex:1;height:6px}.seg-bar i.done{background:var(--good)}.seg-bar i.now{background:var(--accent)}.shell .step-phone .step-main{padding:8px 20px 40px}.sheet-backdrop{z-index:50;background:#23201b73;align-items:flex-end;display:flex;position:fixed;inset:0}.sheet{overscroll-behavior:contain;width:100%;max-height:82dvh;padding:10px 20px calc(28px + env(safe-area-inset-bottom));background:var(--paper);border-radius:28px 28px 0 0;overflow-y:auto}.sheet-handle{background:var(--line-2);border-radius:3px;width:40px;height:5px;margin:0 auto 12px;display:block}.scene-card{background:var(--card);border:1px solid var(--line);border-radius:20px;margin:0;overflow:hidden}.scene-card img{object-fit:cover;object-position:center 35%;background:#fff;width:100%;height:220px;display:block}.scene-card figcaption{color:var(--muted);flex-direction:column;gap:4px;padding:14px 16px;font-size:13px;display:flex}.scene-card figcaption b{color:var(--ink);font-size:16px}.scene-card.small{grid-template-columns:120px 1fr;display:grid}.scene-card.small img{height:100%;min-height:80px}.player-card{background:var(--card);border:1px solid var(--line);border-radius:20px;flex-direction:column;align-items:center;gap:14px;padding:18px;display:flex}.wave{gap:4px;width:100%;display:flex}.wave i{background:var(--line-2);border-radius:4px;flex:1;height:8px}.wave i.past{background:var(--accent)}.wave i.now{background:var(--accent);opacity:.5}.player-controls{align-items:center;gap:18px;display:flex}.play-big{background:var(--ink);width:64px;height:64px;color:var(--paper);cursor:pointer;border:0;border-radius:50%;place-items:center;display:grid}.toggle{align-items:center;gap:4px;display:inline-flex}.now-line{text-align:center;flex-direction:column;align-items:center;gap:4px;min-height:92px;display:flex}.now-line .who{font-size:12px;font-weight:700}.now-jp{font-size:20px}.word-stack{flex-direction:column;gap:14px;display:flex}.word-card{background:var(--card);border:1px solid var(--line);border-radius:28px;flex-direction:column;align-items:center;gap:14px;padding:28px 22px 22px;display:flex}.word-meta{gap:8px;display:flex}.word-kana .acc{font-size:24px}.word-big{font:700 64px/1.1 var(--jp)}.word-zh{color:var(--ink-2);font-size:18px}.word-play{align-items:center;gap:12px;display:flex}.word-play .play-big{width:56px;height:56px}.word-example{background:var(--paper);border-radius:16px;align-self:stretch;padding:12px}.rate-buttons{grid-template-columns:1fr 1fr;gap:12px;display:grid}.name-grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;display:grid}.name-grid>p{grid-column:1/-1;margin:0}.name-chip{border:1px solid var(--line);background:var(--card);text-align:left;cursor:pointer;border-radius:14px;flex-direction:column;gap:2px;padding:12px;display:flex}.name-chip small{color:var(--muted)}.name-chip.wide{grid-column:span 2}.done-card{background:var(--good-soft);color:var(--good);border-radius:22px;flex-direction:column;align-items:center;gap:10px;padding:32px;display:flex}.done-card b{color:var(--ink)}.quiz{flex-direction:column;align-items:center;gap:18px;display:flex}.quiz-q{margin:0;font-size:22px}.speaker-ring{background:var(--accent-soft);cursor:pointer;border:0;border-radius:50%;place-items:center;width:132px;height:132px;display:grid}.speaker-ring span{background:var(--accent);color:#fff;border-radius:50%;place-items:center;width:92px;height:92px;display:grid}.option-grid{grid-template-columns:1fr 1fr;gap:12px;width:100%;display:grid}.option{border:1px solid var(--line);background:var(--card);min-height:68px;font:600 17px var(--ui);cursor:pointer;border-radius:18px}.option.correct{border:2px solid var(--good);background:var(--good-soft);color:var(--good)}.option.wrong{border:2px solid var(--bad);background:var(--bad-soft);color:var(--bad)}.feedback{border-radius:18px;align-items:center;gap:12px;width:100%;padding:14px 16px;display:flex}.feedback.good{background:var(--good-soft)}.feedback.bad{background:var(--bad-soft)}.feedback>span:nth-child(2){flex-direction:column;flex:1;display:flex}.feedback small{color:var(--ink-2)}.fb-icon{background:var(--good);color:#fff;border-radius:50%;place-items:center;width:36px;height:36px;font-weight:700;display:grid}.feedback.bad .fb-icon{background:var(--bad)}.formula{font:700 30px/1.5 var(--jp)}.formula .slot{vertical-align:4px;padding:2px 8px;font-size:.6em}.rule{color:var(--ink-2);margin:-10px 0 0;font-size:15px}.model{background:var(--card);border:1px solid var(--line);border-radius:22px;flex-direction:column;gap:6px;padding:18px 20px;display:flex}.line.hero .line-body>.jp{font-size:30px}.line.hero{padding:4px 0}.drill{background:var(--card-2);border-radius:20px;flex-direction:column;gap:10px;padding:16px;display:flex}.chip-row{flex-wrap:wrap;gap:8px;display:flex}.chip-btn{border:1px solid var(--line);background:var(--card);cursor:pointer;border-radius:999px;padding:6px 14px;font-size:15px}.chip-btn[aria-pressed=true]{background:var(--ink);color:var(--paper);border-color:var(--ink)}.chip-btn[aria-pressed=true] rt{color:#b8b0a2}.drill-result{background:var(--card);border-radius:14px;padding:6px}.drill-result .dialogue{border:0;padding:0}.tips-inline{background:var(--indigo-soft);color:var(--indigo);border-radius:14px;padding:12px 14px;font-size:13.5px}.tips-inline summary{cursor:pointer;align-items:center;gap:8px;display:flex}.tips-inline p{color:var(--ink-2);margin:8px 0 0}.step-layout.wide .tips-inline{display:none}.mini-check{background:var(--card);border:1px solid var(--line);border-radius:20px;flex-direction:column;gap:10px;padding:16px;display:flex}.check-option{border:1px solid var(--line);background:var(--paper);cursor:pointer;text-align:left;border-radius:12px;justify-content:space-between;align-items:center;gap:8px;padding:12px 14px;font-size:17px;display:flex}.check-option.correct{border-color:var(--good);background:var(--good-soft);color:var(--good)}.check-option.wrong{border-color:var(--bad);background:var(--bad-soft)}.check-option:disabled{cursor:default}.step-nav{justify-content:space-between;align-items:center;gap:12px;margin-top:8px;display:flex}.warmup{border:1px solid var(--line);background:var(--card);border-radius:18px;padding:4px 14px}.warmup summary{cursor:pointer;padding:10px 0;font-weight:600}.warmup-grid{grid-template-columns:1fr 1fr;gap:10px;padding-bottom:12px;display:grid}.shell.phone .warmup-grid{grid-template-columns:1fr}.scene-head{flex-direction:column;gap:12px;display:flex}.mode-bar{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.mode-bar .segmented{flex:1;min-width:260px}.chat{flex-direction:column;gap:14px;display:flex}.chat-stage{background:var(--card-2);color:var(--muted);border-radius:999px;align-self:center;padding:4px 12px;font-size:12px}.chat-row{align-items:flex-end;gap:10px;display:flex}.chat-row.me{justify-content:flex-end}.chat-avatar{object-fit:cover;background:#fff;border:2px solid;border-radius:50%;flex:none;width:38px;height:38px}.chat-avatar.glyph{color:#fff;font:600 13px var(--jp);border:0;place-items:center;display:grid}.bubble{background:var(--card);border:1px solid var(--line);border-radius:20px 20px 20px 4px;flex-direction:column;gap:2px;max-width:min(560px,82%);padding:10px 12px 8px;display:flex}.chat-row.me .bubble{border-radius:20px 20px 4px}.bubble.mine{border-color:var(--indigo)}.bubble-who{padding-left:8px;font-size:12px;font-weight:700}.bubble .line{padding:2px 0}.bubble .line.your-turn{background:var(--indigo-soft);border-radius:12px}.expr-note{background:var(--accent-soft);color:var(--accent);border-radius:8px;align-self:flex-start;align-items:center;gap:6px;margin:2px 8px;padding:4px 10px;font-size:12px;font-weight:600;display:inline-flex}.turn-hint{color:var(--indigo);align-items:center;gap:6px;margin:0 8px;font-size:12px;display:inline-flex}.q-progress{gap:3px;display:flex}.q-progress i{background:var(--line);border-radius:3px;flex:1;height:5px}.q-progress i.done{background:var(--good)}.q-progress i.now{background:var(--accent)}.question{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px 20px}.question .ex-item{grid-template-columns:1fr}.question .ex-num{display:none}.question.solved{border-color:var(--good)}.verdict{align-items:center;gap:6px;font-size:14px;font-weight:600;display:inline-flex}.verdict.good{color:var(--good)}.verdict.bad{color:var(--bad)}.results{flex-direction:column;align-items:center;gap:18px;display:flex}.score-ring{--pct:0%;background:conic-gradient(var(--good) var(--pct), var(--line) 0);border-radius:50%;place-items:center;width:160px;height:160px;display:grid}.score-ring span{background:var(--paper);border-radius:50%;place-items:center;width:134px;height:134px;display:grid}.score-ring b{font:700 36px Inter, var(--ui);line-height:1}.score-ring small{color:var(--muted);font-size:13px}.wrong-list{flex-direction:column;align-self:stretch;gap:8px;display:flex}.wrong-item{background:var(--card);border:1px solid var(--line);border-radius:14px;flex-direction:column;gap:4px;padding:12px 14px;display:flex}.wrong-answer{color:var(--bad);align-items:center;gap:4px;font-size:13px;display:inline-flex}.result-actions{flex-wrap:wrap;justify-content:center;gap:12px;display:flex}.read-art{object-fit:cover;border:1px solid var(--line);background:#fff;border-radius:20px;width:100%;height:180px}.facts{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.fact{background:var(--card);border:1px solid var(--line);border-radius:16px;flex-direction:column;align-items:center;gap:2px;padding:14px 8px;display:flex}.fact b{font:700 24px Inter, var(--ui);color:var(--accent)}.fact small{margin-left:2px;font-size:12px}.fact span{color:var(--muted);font-size:12px}.read-zh p{text-indent:2em;color:var(--ink-2);line-height:1.8}.read-ja{flex-direction:column;gap:6px;display:flex}.review-words,.review-wrong{flex-direction:column;gap:14px;max-width:620px;margin-bottom:28px;display:flex}.review h2{margin:0;font-size:17px}.switch-row{border-bottom:1px solid var(--line);cursor:pointer;align-items:center;gap:12px;padding:10px 0;display:flex}.switch-row>span{flex-direction:column;flex:1;display:flex}.switch-row small{color:var(--muted);font-size:12px}.switch{appearance:none;background:var(--line-2);cursor:pointer;border-radius:13px;width:44px;height:26px;transition:background .15s;position:relative}.switch:after{content:"";background:#fff;border-radius:50%;width:20px;height:20px;transition:transform .15s;position:absolute;top:3px;left:3px}.switch:checked{background:var(--good)}.switch:checked:after{transform:translate(18px)}.wide-slider{grid-template-columns:3em 1fr 3.5em;margin-top:12px}@media (width<=640px){.home-head h1{font-size:28px}.cc-title{font-size:24px}.overview-hero h1{font-size:28px}.step-title{font-size:22px}.formula,.line.hero .line-body>.jp{font-size:24px}.word-big{font-size:52px}.facts .fact b{font-size:20px}.step-nav{flex-wrap:wrap}.step-nav .btn-primary{flex:1}}.shell main.lesson,.shell main.cast-page{max-width:1120px;margin:0 auto;padding:32px 24px 96px}.shell.phone main.lesson,.shell.phone main.cast-page{padding:20px 16px 32px}.shell .toc{top:16px}@media (width<=640px){.line.compact .line-body{display:block}.line.compact .tools{margin-top:2px}}.question:not(.answered):not(.solved) :is(.btn[aria-label=答案],.btn[aria-label=参考答案],.btn[aria-label=听全句]){display:none}
