:root{--bg:#f5f4ef;--paper:#fffefa;--ink:#253c34;--muted:#69766e;--line:#dfe3da;--red:#a34335;--ok:#326b50;--accent:#244f40;--font:18px;--radius:20px}
*{box-sizing:border-box}html{color-scheme:light}html,body{margin:0;min-height:100%;background:var(--bg);color:var(--ink);font-family:'Segoe UI','Microsoft YaHei',sans-serif;font-size:15px;line-height:1.65}body{min-height:100dvh}button,input,textarea,select{font:inherit}button{cursor:pointer;border:1px solid var(--line);background:var(--paper);color:var(--ink);border-radius:10px;padding:10px 18px;min-height:44px;transition:background .16s,border-color .16s,transform .16s}button:hover:not(:disabled){background:#edf1e9;border-color:#a9b9ac}button:active:not(:disabled){transform:translateY(1px)}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}button.primary:hover:not(:disabled){background:#173e30}button.danger{background:var(--red);color:#fff}button:disabled{opacity:.48;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible,summary:focus-visible,[tabindex]:focus-visible{outline:3px solid #8ba78e;outline-offset:3px}a{color:var(--accent)}h1,h2,h3,p{margin-top:0}h1,h2,h3{font-weight:550;line-height:1.35;letter-spacing:-.035em}h1{font-size:40px}h2{font-size:28px}h3{font-size:21px}.muted,.progress{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:.17em;text-transform:uppercase;font-weight:650;color:var(--muted)}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.hidden,[hidden]{display:none!important}
.topbar{min-height:88px;display:flex;justify-content:space-between;align-items:center;padding:18px 5vw;border-bottom:1px solid var(--line);gap:20px;background:var(--bg)}.brand{display:flex;align-items:center;gap:12px;font-size:17px;font-weight:600;white-space:nowrap}.brand-mark{height:36px;width:36px;display:grid;place-items:center;background:var(--accent);color:#fff;border-radius:50%;font:italic 23px Georgia,serif}.brand small{display:block;font-size:9px;font-weight:500;letter-spacing:.19em;color:var(--muted);line-height:1.1}.settings{font-size:12px}.settings button{background:transparent;border-color:transparent;padding:7px 12px}.settings details{position:relative}.settings summary{cursor:pointer;list-style:none;padding:10px}.settings-panel{position:absolute;right:0;top:42px;padding:20px;background:var(--paper);border:1px solid var(--line);box-shadow:0 12px 40px #233a3212;border-radius:12px;width:230px;z-index:15}.settings-panel label{display:block;margin:8px 0}.settings input[type=range]{width:100%;accent-color:var(--accent)}.settings input[type=color]{height:30px;width:48px;padding:2px;border:1px solid var(--line)}.account{border-left:1px solid var(--line);padding-left:16px;color:var(--muted)}
.wrap{max-width:1000px;margin:48px auto;padding:0 28px}.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:36px}.page-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:32px}.page-head h1{margin:8px 0 10px}.date-label{color:var(--muted);font-size:13px;white-space:nowrap}.overview-main{display:grid;grid-template-columns:1.55fr 1fr;min-height:330px;background:var(--paper);border:1px solid var(--line);border-radius:20px;overflow:hidden}.daily-copy{padding:40px}.daily-copy h2{font-size:30px;max-width:340px;margin:18px 0}.daily-counts{display:flex;gap:32px;margin:26px 0 30px}.daily-counts strong{display:block;font:42px Georgia,serif;color:var(--accent);line-height:1.2}.daily-counts span{font-size:12px;color:var(--muted)}.daily-art{background:#e7ece1;display:flex;align-items:center;justify-content:center;padding:30px;position:relative;overflow:hidden}.paper-stack{width:210px;min-height:225px;background:#fffef7;padding:25px;border:1px solid #d5ddce;box-shadow:12px 12px 0 #d8e0d0;transform:rotate(-7deg)}.paper-stack .big{font:italic 68px Georgia,serif;margin:4px 0;color:#385b40}.paper-rule{height:1px;background:#dfe4d7;margin:13px 0}.overview-note{display:flex;justify-content:space-between;gap:30px;padding:26px 0;border-bottom:1px solid var(--line);color:var(--muted);font-size:13px}.overview-note strong{color:var(--ink);font-weight:500}.section-label{margin:30px 0 12px}.session-track{display:flex;justify-content:space-between;gap:20px;font-size:12px}.meter{height:4px;background:#dfe5da;border-radius:3px;margin:12px 0 28px;overflow:hidden}.meter span{display:block;background:var(--accent);height:100%;transition:width .25s}.exercise{max-width:840px;margin-top:30px}.exercise .card{padding:42px 48px}.question-meta{display:flex;justify-content:space-between;align-items:center;margin-bottom:26px;font-size:12px;color:var(--muted)}.badge{display:inline-block;background:#ecf0e6;border-radius:5px;padding:4px 9px;font-size:11px;color:#486148}.stem{font-size:calc(var(--font) * 1.35);font-weight:500;line-height:1.6;margin:12px 0 30px;overflow-wrap:anywhere;letter-spacing:-.015em}.answer-area{border-top:1px solid var(--line);padding-top:24px}.answer-label{display:block;font-size:12px;font-weight:600;margin-bottom:10px}.input-tabs{display:inline-flex;gap:3px;background:#eeefe8;padding:4px;border-radius:10px;margin-bottom:18px}.input-tabs button{min-height:34px;padding:5px 16px;font-size:12px;background:none;border-color:transparent}.input-tabs button.active{background:var(--paper);box-shadow:0 1px 3px #243c3410}.voice-panel{display:flex;gap:18px;align-items:center;margin-bottom:18px;background:#f0f3eb;border-radius:12px;padding:18px}.voice-panel p{margin:0;font-size:12px;color:var(--muted)}.voice-panel strong{display:block;color:var(--ink);font-size:14px;font-weight:500}.voice-panel button{flex-shrink:0}.record-dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:currentColor;margin-right:7px}.recording{background:#a34335!important;color:white!important}.recording .record-dot{animation:pulse 1s infinite}textarea,input:not([type=range]):not([type=color]){border:1px solid var(--line);border-radius:10px;background:#fffefb;color:var(--ink);padding:13px 15px;max-width:100%}textarea{width:100%;min-height:116px;resize:vertical;font-size:var(--font);line-height:1.65;display:block}textarea:focus,input:focus{border-color:#9eb19e}.answer-actions{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-top:22px}.answer-actions .muted{font-size:11px}.options{display:flex;flex-direction:column;gap:10px}.opt{text-align:left;padding:15px 18px;font-size:var(--font);display:flex;align-items:center;gap:14px}.opt .option-letter{font-size:12px;border:1px solid var(--line);min-width:28px;height:28px;display:grid;place-items:center;border-radius:6px;flex-shrink:0}.opt.picked{background:#eaf0e4;border-color:#628169}.opt.picked .option-letter{background:var(--accent);color:white;border-color:var(--accent)}.feedback{margin:20px 0 16px;padding:18px 20px;border:1px solid transparent;border-radius:12px;font-size:14px;line-height:1.8}.feedback.ok{background:#eaf2e6;border-color:#d5e3ce;color:#315b3a}.feedback.bad{background:#fbefe7;border-color:#efdbcb;color:#874a30}.feedback strong{display:block;margin-bottom:4px}.done{text-align:center;padding:65px 35px}.done-mark{height:64px;width:64px;display:grid;place-items:center;border-radius:50%;background:#e7efe1;font-size:27px;margin:0 auto 24px}.done h1{margin-bottom:15px}.done .primary{margin-top:16px}
.auth-layout{min-height:100dvh;display:grid;grid-template-columns:1fr 1fr}.auth-story{background:#e5eadf;padding:50px 12%;display:flex;flex-direction:column;justify-content:space-between;min-height:680px}.auth-story h1{font-size:clamp(36px,4vw,58px);line-height:1.35;margin:26px 0}.auth-story p{color:#5b6d5c;max-width:310px}.auth-story .brand{margin-bottom:55px}.auth-quote{font:italic 30px Georgia,serif;border-top:1px solid #bac9b7;padding-top:25px}.auth-side{display:flex;align-items:center;justify-content:center;padding:40px}.auth{width:100%;max-width:350px}.auth h2{margin:10px 0}.auth label{display:block;font-size:12px;font-weight:600;margin:22px 0 8px}.auth input{width:100%;height:48px}.auth .primary{width:100%;margin-top:28px}.auth-switch{font-size:12px;color:var(--muted);margin-top:18px;text-align:center}.auth-switch button{font-size:12px;border:0;background:transparent;min-height:30px;padding:3px 6px;color:var(--accent);text-decoration:underline;text-underline-offset:4px}.auth #err{color:var(--red);font-size:13px;min-height:22px;margin-top:12px}
.reading-steps{display:flex;justify-content:center;gap:28px;padding:16px 24px;border-bottom:1px solid var(--line);background:var(--paper);font-size:12px;color:var(--muted)}.reading-steps span{display:flex;align-items:center;gap:8px;white-space:nowrap}.reading-steps b{font-size:10px;border:1px solid var(--line);border-radius:50%;width:21px;height:21px;display:grid;place-items:center;font-weight:500}.reading-steps .active{color:var(--accent);font-weight:650}.reading-steps .active b{background:var(--accent);color:white;border-color:var(--accent)}.ielts{display:flex;min-height:calc(100dvh - 145px);max-width:1500px;margin:auto}.pane{padding:38px 40px;background:var(--paper);min-width:0;overflow-wrap:anywhere}.left{width:var(--left,48%);background:#f1f2eb}.right{flex:1}.splitter{width:5px;flex-shrink:0;cursor:col-resize;background:var(--line)}.splitter:hover{background:#93aa92}.pane .stem{font-size:calc(var(--font) * 1.15)}.pane>p.muted:first-child{font-size:12px;letter-spacing:.05em;margin-bottom:25px}.reading-wait{margin:70px 0;padding:25px 0;border-top:1px solid #d4ddcc;border-bottom:1px solid #d4ddcc}.reading-wait h3{font:italic 32px Georgia,serif;color:#5a775e}.reading-wait p{font-size:13px;color:var(--muted);max-width:270px}.sent{font-family:Georgia,'Microsoft YaHei',serif;font-size:calc(var(--font) * 1.08);line-height:1.95;margin:0 0 16px}.sent.current{background:#e1e9d5;border-left:3px solid #7a9865;padding:10px 14px;border-radius:0 6px 6px 0}.mark{background:#e6d790;border-bottom:1px solid #b99e42;cursor:pointer}.select-hint{font-size:11px;color:var(--muted);padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:24px}.stamp{display:inline-block;background:#e9eee2;color:#4a6345;border:1px solid #d7e0cc;border-radius:5px;padding:5px 9px;font-size:11px;margin:0 6px 18px 0}.tree{display:grid;gap:10px;margin:20px 0}.tree button{text-align:left}.confirm{border-top:1px solid var(--line);padding-top:18px;margin-top:20px;font-size:13px}.confirm button{margin-left:7px}.pane #mlist{display:grid;gap:8px}.pane .row{margin:16px 0}.pane textarea{min-height:88px}.pane #idea{padding-top:24px}.pane #idea>p{font-size:12px;margin:12px 0 6px}.pane .options{margin-top:15px}figure{margin:20px 0}figure img{max-width:100%;height:auto}figcaption{font-size:12px;color:var(--muted)}
.modal{position:fixed;inset:0;background:#1d302e73;backdrop-filter:blur(12px) saturate(.82);display:flex;align-items:center;justify-content:center;z-index:30;padding:20px}.modal .box{background:var(--paper);padding:32px;border:1px solid var(--line);border-radius:20px;width:min(560px,100%);max-height:85dvh;overflow:auto;box-shadow:0 30px 100px #152b3120}.modal .box>p.muted{font-size:13px}.modal .row{margin-top:18px}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.modal-head h2{margin:0}.word-item{border-top:1px solid var(--line);padding:20px 0}.word-item .w{font:24px Georgia,serif;margin-bottom:7px}.word-item .muted{font-size:13px}.word-item .word-meta{font-size:10px;margin-top:8px}.empty-state{padding:35px 10px;text-align:center;color:var(--muted)}.empty-state strong{display:block;color:var(--ink);font-size:20px;margin-bottom:10px}.select-pop{position:fixed;z-index:35;background:var(--paper);border:1px solid var(--line);box-shadow:0 8px 24px #18332120;border-radius:12px;padding:14px;max-width:calc(100vw - 24px)}.picked-word{font:22px Georgia,serif;margin-bottom:10px}.toast,.flash{position:fixed;left:50%;bottom:28px;transform:translateX(-50%);background:#243e33;color:#fff;padding:14px 22px;border-radius:12px;z-index:60;max-width:min(90vw,600px);font-size:13px;box-shadow:0 8px 30px #243c3420;pointer-events:none}.flash{bottom:auto;top:20%;}.loading{padding:100px 25px;text-align:center;color:var(--muted)}.loading-ring{width:26px;height:26px;border:2px solid var(--line);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 20px}#fireworks{position:fixed;inset:0;width:100%;height:100%;pointer-events:none;z-index:50}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse{50%{opacity:.3}}
@media(min-width:1000px){.pane{max-height:calc(100dvh - 146px);overflow:auto}.ielts{height:calc(100dvh - 146px)}}
@media(max-width:760px){.topbar{min-height:72px;padding:14px 20px;gap:8px;flex-wrap:wrap}.brand{font-size:15px}.brand-mark{width:30px;height:30px;font-size:21px}.settings{gap:0}.settings button{padding:6px 9px;font-size:11px}.account{display:none}.wrap{margin:28px auto;padding:0 20px}.page-head{display:block;margin-bottom:24px}.page-head h1{font-size:30px}.date-label{margin-top:16px}.overview-main{grid-template-columns:1fr}.daily-copy{padding:28px}.daily-copy h2{font-size:27px}.daily-art{display:none}.overview-note{display:block}.overview-note span{display:block;margin-top:8px}.exercise .card{padding:26px 23px}.stem{font-size:calc(var(--font) * 1.18);margin-bottom:24px}.answer-actions .muted{display:none}.answer-actions{justify-content:flex-end}.voice-panel{gap:12px;padding:14px;flex-wrap:wrap}.voice-panel button{width:100%}.question-meta{margin-bottom:20px}.auth-layout{grid-template-columns:1fr}.auth-story{min-height:0;padding:26px 28px 32px}.auth-story .brand{margin-bottom:18px}.auth-story h1{font-size:30px;margin:15px 0}.auth-story p,.auth-quote{display:none}.auth-side{padding:35px 28px}.auth h2{font-size:25px}.reading-steps{gap:12px;padding:13px 10px;font-size:10px;overflow:auto;justify-content:flex-start}.reading-steps span{gap:5px}.ielts{display:block}.left{width:100%!important}.pane{padding:26px 22px}.splitter{display:none}.right{border-top:1px solid var(--line)}.reading-wait{margin:10px 0;padding:14px 0}.reading-wait h3{font-size:25px;margin-bottom:8px}.reading-wait p{max-width:none;margin:0}.modal{padding:14px}.modal .box{padding:24px}.modal .row button{flex:1}.card{padding:26px}.done h1{font-size:30px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}#fireworks{display:none!important}}
/* Keep spoken-input actions readable on narrow screens. */
.flash{top:20px;width:max-content;max-width:min(90vw,600px)}
.recording:disabled{opacity:1}
@media(max-width:760px){.asr-box #asrRec{flex:1 0 100%;white-space:nowrap}.asr-box #asrOk,.asr-box #asrCancel{flex:1}.modal .row{align-items:stretch}}
/* Compact answering: one input row, one nearby action, one feedback row. */
.exercise{margin-top:20px;max-width:880px}.exercise .card{padding:24px 28px}.question-meta{margin-bottom:10px}.exercise .stem{margin:8px 0 4px;font-size:calc(var(--font) * 1.25)}.meter{margin:8px 0 18px}.topbar{min-height:76px;padding-top:12px;padding-bottom:12px}.answer-area{padding-top:14px}.answer-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:10px}.input-tabs{margin:0;padding:3px}.input-tabs button{min-height:38px;padding:6px 14px}.voice-panel{display:flex;background:none;border-radius:0;padding:0;margin:0}.voice-panel button{min-height:44px;padding:8px 12px;font-size:13px}.answer-label{font-size:12px;margin-bottom:6px}.answer-composer{display:flex;align-items:stretch;gap:8px}.answer-composer textarea{min-height:64px;height:68px;flex:1;min-width:0;padding:10px 12px}.answer-composer>button{flex:0 0 76px;padding:9px 14px;align-self:stretch}.input-hint{font-size:11px;color:var(--muted);margin-top:6px}.exercise #fb:has(.feedback){display:flex;align-items:center;gap:12px;margin-top:14px;border-top:1px solid var(--line);padding-top:14px}.exercise #fb .feedback{flex:1;min-width:0;margin:0;padding:12px 14px;font-size:13px}.exercise #fb>button{flex-shrink:0;min-width:76px;padding:10px 12px}.exercise #fb .feedback strong{margin-bottom:2px}.pane{padding:26px 30px}.pane .stem{margin-bottom:4px}.pane .row{margin:10px 0}.modal .box{padding:24px}.asr-box textarea{min-height:72px}.asr-box .row{margin-top:10px}.asr-box #asrOk{background:var(--accent);color:#fff}.pane #idea{padding-top:12px}.pane #idea>p{margin:8px 0 4px}.pane textarea{min-height:64px}.reading-steps{padding-top:12px;padding-bottom:12px}.settings{gap:3px}.settings button{min-height:40px}.settings [data-sound-toggle]{font-size:11px;color:var(--muted)}
@media(min-width:1000px){.pane{max-height:calc(100dvh - 129px)}.ielts{height:calc(100dvh - 129px);min-height:calc(100dvh - 129px)}}
@media(max-width:760px){.topbar{padding:12px 16px}.settings{gap:0}.settings button{padding:5px 7px}.settings summary{padding:9px 7px}.exercise{padding:0 14px;margin-top:16px}.exercise .card{padding:18px}.exercise .stem{font-size:calc(var(--font) * 1.15)}.voice-panel button{width:auto}.answer-toolbar{gap:8px}.answer-composer>button{flex-basis:64px;padding:8px}.answer-composer textarea{height:70px;min-height:70px;padding:9px 10px}.exercise #fb:has(.feedback){gap:8px;padding-top:10px;margin-top:10px}.exercise #fb .feedback{padding:10px;font-size:12px}.exercise #fb>button{min-width:64px;padding:8px;font-size:13px}.pane{padding:20px}.asr-box #asrRec{flex:initial;white-space:nowrap}.asr-box .row{display:flex;flex-wrap:wrap}.asr-box .row button{padding:9px 11px;font-size:12px;flex:1 1 auto}.modal .box{padding:20px}}

/* Selected-word lookup and the reading navigation share the quiet green theme. */
.reading-toolbar .reading-nav-button { background:rgba(227,235,224,.72); border:1px solid #b9c9b9; color:#245342; border-radius:999px; min-height:40px; padding:8px 16px; box-shadow:0 2px 7px rgba(36,83,66,.08); transition:background .2s ease,transform .2s ease,box-shadow .2s ease; }
.reading-toolbar .reading-nav-button:hover:not(:disabled),.reading-toolbar .reading-nav-button:focus-visible { background:#dce8da; box-shadow:0 5px 14px rgba(36,83,66,.15); transform:translateY(-1px); }
.reading-toolbar .reading-nav-button:disabled { opacity:.45; background:rgba(235,239,232,.5); }
.word-meaning { margin-top:10px; padding-top:8px; border-top:1px solid var(--line); font-size:13px; color:var(--accent); }
.wordbook-table { display:grid; border-top:1px solid var(--line); }
.wordbook-row { display:grid; grid-template-columns:52px minmax(120px,1.4fr) 80px minmax(140px,2fr); gap:12px; align-items:baseline; border-bottom:1px solid var(--line); padding:14px 0; font-size:13px; }
.wordbook-head { color:var(--muted); font-size:11px; padding:10px 0; }
.wordbook-row .w { font:22px Georgia,serif; }
.word-index { color:var(--muted); font-size:12px; }
.word-context { grid-column:2/-1; font-size:11px; margin-top:-6px; }
.stem,.opt,.stamp,.reading-coach-copy,.reading-main-idea-reminder { user-select:text; }
.modal .box.wordbook-dialog { width:min(66.666vw,1100px); max-height:82dvh; }
@media(max-width:760px){.wordbook-row{grid-template-columns:34px minmax(100px,1fr) 62px minmax(90px,1.2fr);gap:7px;font-size:12px}.wordbook-row .w{font-size:18px}}
@media(max-width:760px){.modal .box.wordbook-dialog{width:100%;max-height:88dvh}}

/* Option translation is deliberately quiet: it never selects the answer. */
.option-row{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center}.option-row .opt{grid-column:1/-1;grid-row:1;width:100%;padding-right:104px}.lazy-option{position:relative;grid-column:2;grid-row:1;align-self:center;justify-self:end;margin-right:12px;width:88px;min-height:30px;padding:4px 6px;box-sizing:border-box;white-space:nowrap;font-size:12px;background:#edf3e9;border-color:#cbd8c7;color:#356048}.lazy-option:hover:not(:disabled),.lazy-option:focus-visible{background:#dce9d8}.lazy-option-translation{grid-column:1/-1;grid-row:2;display:none;margin:2px 0 0;padding:11px 14px 11px 18px;border-left:3px solid #90aa82;background:#eff4ea;color:#355544;font-size:13px;line-height:1.65}.lazy-option-translation:not(:empty){display:block}

/* Fuel station: a calm, large overlay with one simple decision at a time. */
.modal .box.fuel-station-dialog{width:min(78vw,1320px);max-height:86dvh;padding:38px 44px;background:linear-gradient(145deg,#fffefa 0%,#f8fbf5 100%)}.fuel-station-dialog .modal-head{display:grid;grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);align-items:center;padding-bottom:20px;border-bottom:1px solid #e1e9dd}.fuel-station-subtitle{margin:7px 0 0;font-size:14px}.fuel-station-heading{display:flex;align-items:center;gap:14px}.fuel-station-mark{display:grid;place-items:center;width:44px;height:44px;border-radius:13px;background:linear-gradient(145deg,#2e6951,#1f4e3c);color:#f2f7ed;box-shadow:0 8px 18px rgba(31,78,60,.2)}.fuel-station-mark svg{width:27px;height:27px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}.fuel-station-review-actions,.fuel-station-header-actions{display:flex;align-items:center;gap:9px}.fuel-station-review-actions{justify-self:center}.fuel-station-header-actions{justify-self:end}.fuel-review-full,.fuel-review-limited{color:#315f48;border-color:#b8cdb6;background:#f8fbf5;transition:background .18s ease,border-color .18s ease,color .18s ease,box-shadow .18s ease}.fuel-review-full:hover,.fuel-review-full:focus-visible,.fuel-review-limited:hover,.fuel-review-limited:focus-visible{border-color:#6f9571;background:#edf5e8}.fuel-review-full.is-active,.fuel-review-limited.is-active{background:#285b45;color:#fff;border-color:#285b45;box-shadow:0 6px 14px rgba(40,91,69,.16)}.fuel-station-reset{color:#8a513f;border-color:#e1c5b8;background:#fffaf7}.fuel-station-reset:hover:not(:disabled),.fuel-station-reset:focus-visible{color:#743e2d;border-color:#c98f79;background:#fff2ec}.fuel-station-choices{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;min-height:340px;align-items:stretch;margin-top:25px}.fuel-station-choice{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;text-align:left;padding:30px;border-radius:16px;border:1px solid #cbd8c7;background:linear-gradient(150deg,#fffefa,#f2f7ef);color:var(--ink);box-shadow:0 8px 20px rgba(45,80,49,.05);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.fuel-station-choice::before{content:"";position:absolute;inset:0 0 auto;height:4px;border-radius:16px 16px 0 0;background:#b8cfaf;opacity:.8}.fuel-station-choice:hover,.fuel-station-choice:focus-visible{transform:translateY(-3px);border-color:#769479;box-shadow:0 14px 30px #2a4a2414}.fuel-station-choice strong{font:600 30px Georgia,'Microsoft YaHei',serif;letter-spacing:.02em}.fuel-station-choice span{margin-top:12px;color:var(--muted);font-size:14px}.fuel-station-choice b{position:absolute;right:26px;bottom:25px;min-width:38px;padding:6px 10px;text-align:center;border-radius:999px;background:#e6eddf;color:#2e5843;font-size:14px}.fuel-station-list-head{display:flex;align-items:center;gap:16px;margin:20px 0 10px}.fuel-station-list-head p{margin:0}.fuel-station-list{border-top:1px solid var(--line)}.fuel-station-item{display:grid;grid-template-columns:42px minmax(0,1fr);gap:16px;padding:24px 4px;border-bottom:1px solid var(--line)}.fuel-index{color:var(--muted);font-size:13px;padding-top:5px}.fuel-station-item h3{font:24px Georgia,'Microsoft YaHei',serif;margin:0 0 6px;overflow-wrap:anywhere}.fuel-pos{display:inline-block;margin:0 0 8px;padding:3px 7px;border-radius:5px;background:#edf3e8;color:#4d6b52;font-size:11px}.fuel-translation{margin:4px 0 10px;line-height:1.7}.fuel-context{margin:12px 0 0;font-size:12px;line-height:1.6}.fuel-insight{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:13px 0 0}.fuel-insight div{padding:11px 13px;background:#f3f6ef;border-left:2px solid #a5bb9a}.fuel-insight dd{margin:0;font-size:13px;line-height:1.65}.fuel-station-dialog .empty-state{min-height:330px;display:grid;place-content:center}
@media(max-width:760px){.modal .box.fuel-station-dialog{width:100%;max-height:90dvh;padding:26px 22px}.fuel-station-choices{grid-template-columns:1fr;min-height:auto}.fuel-station-choice{min-height:145px;padding:24px}.fuel-station-choice strong{font-size:25px}.fuel-insight{grid-template-columns:1fr}.lazy-option{margin-right:9px}.option-row .opt{padding-right:104px}}
.exercise .opt.incorrect{background:#fbefe7;border-color:#d28a6d;color:#874a30}.exercise .opt.incorrect .option-letter{background:#b85b43;color:#fff;border-color:#b85b43}

.input-tabs button,.settings button{min-height:44px}

.reading-composer{display:flex;gap:8px;align-items:stretch}.reading-composer textarea{flex:1;min-width:0;min-height:96px}.input-tools{display:flex;flex-direction:column;gap:6px;flex:0 0 66px}.input-tools button{min-height:44px;padding:8px}.pane #rfb .answer-composer{margin-top:6px}.pane #rfb>button{margin-bottom:8px}

.recording-tools { display:flex; align-items:center; flex-wrap:wrap; gap:8px 12px; margin:8px 0; }
.recording-tools .record-cancel { min-height:44px; }
.record-auto { display:flex; align-items:center; gap:6px; font-size:.8rem; color:var(--muted,#657268); min-height:44px; }
.record-auto input { width:18px; height:18px; accent-color:#244f40; }
.record-status { flex-basis:100%; font-size:.8rem; color:var(--muted,#657268); }
.input-tools:has(.recording), .input-tools:has([aria-busy="true"]) { flex-basis:130px; }

.teacher-preview { font-size:11px; padding:8px; color:var(--muted); }
.preview-bar { background:#edf3e9; border-bottom:1px solid #c8d7c4; padding:12px max(16px,calc((100% - 1120px)/2)); font-size:13px; }
.preview-bar>div:first-child { display:flex; align-items:center; gap:16px; flex-wrap:wrap; }
.preview-actions { display:flex; align-items:center; flex-wrap:wrap; gap:8px; margin-top:8px; }
.preview-actions button { min-height:40px; padding:5px 12px; font-size:13px; }
.preview-actions input { width:65px; padding:5px; }
.preview-bar p { margin:6px 0; color:#4c624f; }
.preview-bar select { max-width:100%; width:390px; padding:7px; margin:4px 0; }
.preview-bar details { margin-top:4px; }
.preview-bar summary { cursor:pointer; font-size:12px; }
.quality-note { border-left:3px solid #b88639; padding:8px 12px; background:#faf5e8; font-size:13px; }
.preview-passage { line-height:1.8; }
.preview-figure { display:block; max-width:100%; max-height:350px; object-fit:contain; }

.reading-main-idea-reminder{position:relative;margin:0 0 18px;padding:13px 16px 48px;background:linear-gradient(135deg,#edf4e8,#f7f8ee);border:1px solid #a8bea5;border-radius:12px;color:var(--ink);box-shadow:0 7px 18px #29493818;animation:reading-main-idea-float 3.2s ease-in-out infinite,reading-main-idea-pulse 2.4s ease-in-out infinite}
.reading-main-idea-label{display:block;margin-bottom:3px;color:var(--accent);font-size:11px;font-weight:650;letter-spacing:.08em}
.reading-main-idea-reminder strong{display:block;font-size:15px;line-height:1.6;font-weight:550}
@keyframes reading-main-idea-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@keyframes reading-main-idea-pulse{0%,100%{border-color:#a8bea5;box-shadow:0 7px 18px #29493818;opacity:1}50%{border-color:#6e9a79;box-shadow:0 10px 28px #5d8b6638;opacity:.78}}
@media (prefers-reduced-motion:reduce){.reading-main-idea-reminder{animation:none}}
.reading-coach-copy{font-size:calc(var(--font) * 1.05);line-height:1.7;margin:0 0 16px;color:var(--ink);font-weight:550}
.overall-detail-main-idea-card{position:relative;margin:0 0 16px;padding:14px 18px 52px;border:1px solid #c9dac2;border-left:4px solid #78a169;border-radius:14px;background:linear-gradient(110deg,#eef5e9,#f8faf5);box-shadow:0 9px 24px rgba(47,96,72,.11);animation:overall-detail-main-idea-float 6.5s ease-in-out infinite;transform-origin:center}
.overall-detail-main-idea-card span{display:block;margin-bottom:6px;color:#397055;font-size:12px;font-weight:700;letter-spacing:.1em}
.overall-detail-main-idea-card strong{display:block;color:#183d31;font-size:calc(var(--font) * 1.02);line-height:1.62}
.overall-detail-main-idea-card small{display:block;margin-top:7px;color:#5d7668;font-size:12px;line-height:1.5}
.overall-detail-main-idea-card::after{content:"";position:absolute;inset:-2px;border:1px solid rgba(126,170,112,.28);border-radius:inherit;pointer-events:none;opacity:.35;animation:overall-detail-main-idea-glow 3.8s ease-in-out infinite}
@keyframes overall-detail-main-idea-float{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@keyframes overall-detail-main-idea-glow{0%,100%{opacity:0;box-shadow:0 0 0 rgba(126,170,112,0)}50%{opacity:.85;box-shadow:0 0 18px rgba(126,170,112,.28)}}
.main-idea-speaker{position:absolute;right:14px;bottom:11px;z-index:1;width:32px;min-height:30px;padding:3px;border:1px solid #c9dac2;border-radius:999px;background:rgba(255,255,255,.72);color:#397055;font-size:15px;line-height:1;box-shadow:0 3px 10px rgba(47,96,72,.1);cursor:pointer}
.main-idea-speaker:hover{background:#edf5e9;border-color:#8eaa91}
@media(prefers-reduced-motion:reduce){.overall-detail-main-idea-card,.overall-detail-main-idea-card::after{animation:none}}
.reading-prompt-wait{padding:14px 16px;margin:8px 0;color:var(--muted);background:#f4f6ef;border:1px solid var(--line);border-radius:10px;font-size:13px}
.reading-choice-list{margin:14px 0 20px;gap:12px}
.reading-choice-list .reading-choice-item{opacity:0;animation:reading-choice-reveal .46s cubic-bezier(.22,.8,.3,1) both;animation-delay:calc(var(--choice-index,0) * 90ms);text-align:left}
.reading-confirm{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-top:18px}
.reading-confirm span{font-size:calc(var(--font) * 1.05);font-weight:550;margin-right:4px}
.reading-back-row{margin-top:18px}
.reading-back{padding:8px 13px;border:1px solid #d7e2d2;border-radius:999px;background:transparent;color:#5a7667;font-size:13px;box-shadow:none}
.reading-back:hover{border-color:#8eaa91;background:#f2f7ef;color:#245840}
.reading-type-reveal{margin:0 0 18px;padding:15px 18px;border:1px solid #b4caad;border-left:4px solid #528763;border-radius:13px;background:#f1f7ed;color:#254d37}.reading-type-reveal strong{display:block;font-size:17px;line-height:1.5}.reading-type-reveal p{margin:10px 0 0;color:#54705d;font-size:13px}.reading-type-flow{display:flex;align-items:center;flex-wrap:wrap;gap:7px;margin-top:10px;font-size:12px;color:#38604a}.reading-type-flow span{padding:3px 8px;border-radius:999px;background:#fffefa;border:1px solid #cfddc8}.reading-type-flow b{color:#7a9a7b;font-weight:500}
@keyframes reading-choice-reveal{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){.reading-choice-list .reading-choice-item{animation:none;opacity:1}}
/* Reading controls stay with the original text; excerpts retain paragraph boundaries. */
.reading-toolbar { position:sticky; top:0; z-index:2; padding:12px 0; background:transparent; flex-wrap:wrap; }
.reading-paragraph { margin:24px 0; scroll-margin-top:90px; }
.reading-paragraph .paragraph-number { margin:0 0 8px; font-size:13px; }
.reading-paragraph-text { font-size:var(--reading-font-size,24px); line-height:1.9; }
.reading-paragraph-text .sent { display:inline; padding:0; margin:0; border:0; background:transparent; }
.reading-paragraph-text .sent.current { background:#e2ead5; border-radius:3px; }
.reading-paragraph-text.reading-lines .sent { display:block; margin:14px 0; padding:8px 12px; }
.target-term { background:#efdda7; color:inherit; border-bottom:2px solid #9b7730; }
.paragraph-link {color:var(--green, #245342);text-decoration:underline;text-decoration-style:dotted;text-underline-offset:5px;border-radius:4px;}
.paragraph-link:hover,.paragraph-link:focus-visible {background:#e5eddd;text-decoration-style:solid;}
.sentence-location {display:block;color:#758478;font:500 14px/1.7 sans-serif;margin:12px 0 6px;}
.reading-support {border-left:3px solid #8ca884;padding:16px 20px;background:#f0f4eb;border-radius:0 12px 12px 0;}
.keyword-anchor-note{margin:8px 0 14px;padding:9px 12px;border-left:3px solid #9ab38f;background:#f2f6ee;color:#4b6654;font-size:13px;line-height:1.6;}
.keyword-anchor-note.keyword-anchor-ok{border-left-color:#4f805b;background:#edf5e9;color:#2e5941;}
.stem-keyword{display:inline;padding:0 3px;border:0;border-bottom:2px dotted #3b7658;border-radius:3px;background:linear-gradient(180deg,transparent 52%,#deecd7 52%);color:inherit;font:inherit;font-weight:650;line-height:inherit;cursor:pointer;transition:background .18s ease,border-color .18s ease,box-shadow .18s ease;}
.stem-keyword:hover,.stem-keyword:focus-visible{border-bottom-style:solid;border-bottom-color:#245842;background:#d9ebd4;box-shadow:0 2px 0 #8caf85;outline:none;}
.stem-keyword.keyword-attention{animation:keyword-attention 1.45s ease-in-out infinite;}
.keyword-source-highlight{padding:0 2px;border-radius:3px;background:#f0d985;color:inherit;box-shadow:0 0 0 2px rgba(215,178,74,.12);}
.option-keyword-stages{display:flex;align-items:center;gap:9px;margin:12px 0 8px;color:#839086;font-size:12px}.option-keyword-stages span{display:flex;align-items:center;gap:6px;padding:6px 10px;border:1px solid #d7dfd1;border-radius:999px;background:#fafbf7}.option-keyword-stages span.active{border-color:#789c7d;background:#e8f1e3;color:#285c43;font-weight:650}.option-keyword-stages span.done{border-color:#a8bca3;color:#58705f}.option-keyword-stages b{display:grid;place-items:center;width:19px;height:19px;border-radius:50%;background:#edf2e9;font-size:10px}.option-keyword-stages span.active b{background:#2d674e;color:#fff}.option-keyword-stages i{font-style:normal;color:#9aac9a}
.option-analysis-card{cursor:text;user-select:text}.option-analysis-card:hover{border-color:#ccd9c8;background:#fffefa}.option-analysis-card.picked{background:inherit}
.option-keyword-wrap{display:inline-flex;align-items:center;gap:5px;margin:0 2px}.option-keyword{display:inline;padding:1px 3px;border:0;border-radius:4px;background:#f3dc87;color:inherit;box-shadow:0 0 0 2px rgba(215,178,74,.16);font:inherit;font-weight:700;line-height:inherit;cursor:pointer}.option-keyword:hover,.option-keyword:focus-visible{outline:2px solid #c28c28;outline-offset:2px}.option-keyword.is-located{background:#dbeacf;box-shadow:0 0 0 2px rgba(70,121,76,.18)}.option-keyword-remove{display:inline-block;padding:2px 6px;border:1px solid #decaa0;border-radius:999px;background:#fffaf0;color:#8a6534;font:500 10px/1.3 var(--sans,system-ui,sans-serif);white-space:nowrap;cursor:pointer}.option-keyword-remove:hover,.option-keyword-remove:focus-visible{border-color:#b57b45;background:#fff3df;outline:none}.option-final-stage{animation:option-final-stage-pulse 2.2s ease-in-out infinite}@keyframes option-final-stage-pulse{0%,100%{box-shadow:0 0 0 0 rgba(62,116,78,0)}50%{box-shadow:0 0 0 5px rgba(62,116,78,.16)}}
.keyword-picker-trigger,.option-keyword-direct{min-height:34px;padding:5px 11px;border-radius:8px;border-color:#b8cfb5;background:#f7faf4;color:#2d6248;font-size:12px}.keyword-picker-trigger{margin:-4px 0 13px}.option-keyword-direct{grid-column:1/-1;grid-row:2;justify-self:start;margin:5px 0 1px}.option-row:has(.option-keyword-direct) .lazy-option-translation{grid-row:3}.keyword-picker-dialog{width:min(640px,100%)}.keyword-picker-dialog h2{font-size:23px}.keyword-picker-dialog .muted{margin-bottom:14px}.keyword-picker-words{display:flex;flex-wrap:wrap;gap:8px;padding:14px;border:1px solid #d7e1d2;border-radius:10px;background:#f7faf4}.keyword-picker-word{min-height:36px;padding:5px 10px;border-radius:7px;background:#fffefa;font:600 14px/1.35 Georgia,serif}.keyword-picker-word.selected{border-color:#4f805b;background:#dcebd7;color:#254f3a}.keyword-picker-selected{min-height:25px;margin:13px 0 0;color:#315f48;font:600 14px/1.5 Georgia,serif}
.keyword-submit-lock{display:block;margin:0 0 8px;color:#617264;font-size:12px;}
.reading-answer-actions{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-top:12px}
.reading-answer-actions .primary{min-width:72px}
.reading-answer-confirm{margin-top:10px;}
.sentence-translation{display:block;margin:8px 0 5px;padding:8px 12px;border-left:3px solid #90a780;background:#f0f5eb;color:#567064;font:500 18px/1.75 'Microsoft YaHei',sans-serif;}
.sentence-translation-toggle{margin:0 0 12px;min-height:32px;padding:5px 11px;border-radius:999px;font-size:12px;color:#4d705a;background:#f7faf4;border-color:#ccdaca;}
.reading-translation-practice{display:block;position:relative;z-index:3;margin:15px 0 22px;padding:18px 20px;border:1px solid #9bbd96;border-radius:14px;background:#fbfdf9;box-shadow:0 14px 32px rgba(43,83,56,.15);font-family:var(--sans,system-ui,sans-serif);}
.reading-translation-title{margin:0 0 4px;color:#235840;font-weight:700;font-size:17px;}.reading-translation-practice>.muted{margin:0 0 12px;font-size:13px;}.reading-translation-actions{display:flex;flex-wrap:nowrap;gap:8px;align-items:center;margin-top:10px;}.reading-translation-actions button{flex:0 0 auto;min-height:36px;padding:6px 14px;font-size:14px;line-height:1.2;border-radius:9px;}.reading-translation-actions .primary{min-width:58px;}.reading-translation-practice #longPracticeFeedback{margin-top:14px;}.reading-translation-practice #longPracticeFeedback .feedback{margin:0;padding:18px 22px;font-size:21px;line-height:1.75;}
.reading-translation-actions #longPracticeRecord.recording{position:relative;box-shadow:0 0 0 4px rgba(163,67,53,.12);}
.reading-translation-actions #longPracticeRecord.recording::before{content:"";position:absolute;inset:4px;border:2px solid rgba(255,255,255,.35);border-top-color:#fff;border-radius:50%;animation:reading-recording-spin 1.2s linear infinite;pointer-events:none;}
@keyframes reading-recording-spin{to{transform:rotate(360deg)}}
.ielts.reading-practice-active .right,.ielts.reading-practice-active .splitter{filter:blur(2.5px);opacity:.55;pointer-events:none;user-select:none;}.ielts.reading-practice-active .reading-toolbar,.ielts.reading-practice-active .reading-paragraph:not(:has(.reading-translation-practice)){filter:blur(2.5px);opacity:.48;pointer-events:none;user-select:none;}.ielts.reading-practice-active .reading-paragraph:has(.reading-translation-practice) .paragraph-number,.ielts.reading-practice-active .reading-practice-muted{filter:blur(2.5px);opacity:.48;pointer-events:none;user-select:none;}
.keyword-target-arrival{position:relative;display:inline-block!important;border-radius:5px;animation:keyword-target-arrival .64s cubic-bezier(.18,.82,.28,1) both;}
@keyframes keyword-target-arrival{0%{transform:scale(.92);background:#d3e8c8;box-shadow:0 0 0 0 rgba(101,155,89,.55)}42%{transform:scale(1.025);background:#dcefd3;box-shadow:0 0 0 14px rgba(101,155,89,0)}100%{transform:scale(1);background:#e2ead5;box-shadow:0 0 0 0 rgba(101,155,89,0)}}
@keyframes keyword-attention{0%,100%{background:linear-gradient(180deg,transparent 52%,#deecd7 52%);box-shadow:0 0 0 0 rgba(89,138,86,0)}50%{background:#d6edcf;box-shadow:0 0 0 5px rgba(89,138,86,.18)}}
.question-figures {margin:18px 0;max-width:100%;}
.question-figure {margin:0;max-width:100%;border:1px solid #d8ded1;border-radius:12px;background:#fff;padding:12px;}
.question-figure img {display:block;max-width:100%;max-height:470px;margin:auto;object-fit:contain;}
@media(prefers-reduced-motion:reduce){.keyword-target-arrival{animation:none}}
@media(max-width:760px){.keyword-picker-dialog{padding:21px!important}.keyword-picker-words{gap:7px;padding:11px}.keyword-picker-word{min-height:39px;padding:6px 9px}.option-keyword-direct{margin-top:7px}}

/* Fuel station list: desktop uses the breadth of the dialog before it grows taller. */
.fuel-station-columns,.fuel-station-item{display:grid;grid-template-columns:40px minmax(180px,.78fr) minmax(160px,.68fr) minmax(320px,1.55fr);gap:24px}.fuel-station-columns{padding:13px 4px 9px;color:var(--muted);font-size:12px;letter-spacing:.04em}.fuel-station-item{align-items:start;padding:20px 4px;border-top:1px solid var(--line);border-bottom:0}.fuel-index{padding-top:6px}.fuel-station-item h3{margin:0 0 7px}.fuel-pos{margin:0}.fuel-translation{margin:4px 0;font-size:17px;line-height:1.65}.fuel-context{margin:4px 0 0;font-size:13px;line-height:1.7}.fuel-mobile-label{display:none}.fuel-insight{grid-column:2 / -1;margin:3px 0 0}
.fuel-review-stats{grid-column:2/-1;display:flex;align-items:center;flex-wrap:wrap;gap:7px 15px;margin-top:-8px;color:#65776a;font-size:12px}.fuel-review-stats span{display:inline-flex;align-items:center;gap:3px}.fuel-review-stats b{color:#2b5642;font-size:13px}.fuel-review-stats .is-correct b{color:#2f7650}.fuel-review-stats .is-wrong b{color:#a4553f}
@media(max-width:760px){.fuel-station-columns{display:none}.fuel-station-item{grid-template-columns:28px 1fr;gap:10px;padding:18px 0}.fuel-entry-meaning,.fuel-entry-context,.fuel-review-stats,.fuel-insight{grid-column:2}.fuel-entry-meaning,.fuel-entry-context{display:grid;grid-template-columns:48px 1fr;gap:8px}.fuel-mobile-label{display:block;color:var(--muted);font-size:12px;padding-top:5px}.fuel-translation,.fuel-context{margin:0}.fuel-review-stats{margin-top:2px}.fuel-insight{grid-template-columns:1fr;margin-top:5px}}

/* A wrong answer opens a real teaching exchange: teacher left, student right. */
.wrong-answer-dialogue{margin-top:18px;padding:18px;border:1px solid #bfd1b9;border-radius:16px;background:linear-gradient(145deg,#f8fbf5,#eef5eb);box-shadow:0 10px 28px rgba(39,76,55,.1)}
.sentence-review{margin-top:14px;padding:16px 18px;border:1px solid #d8e2d7;border-radius:12px;background:#fbfcf8}.sentence-review-text{margin-top:10px;line-height:1.8;font-size:1.08em}.sentence-mark{padding:2px 5px;border-radius:4px}.sentence-mark.is-correct{color:#18724b;background:#e5f4e9}.sentence-mark.is-wrong{color:#b33b31;background:#fde8e3}
.answer-reveal-trigger{margin-top:12px;color:#80513c;border-color:#d6b3a3;background:#fffaf7}.answer-reveal-trigger:hover,.answer-reveal-trigger:focus-visible{color:#693b29;border-color:#bd846c;background:#fff2ec}.answer-reveal-output{margin-top:10px}.answer-revealed{display:flex;gap:10px;align-items:flex-start;padding:13px 15px;border:1px solid #c8dbbf;border-radius:10px;background:#f3f8ee;color:#234d38}.answer-revealed strong{flex:0 0 auto}.answer-revealed span{line-height:1.65}.answer-reveal-modal .box{width:min(430px,100%)}.answer-reveal-actions{display:flex;justify-content:flex-end;gap:10px}.answer-reveal-actions button{min-width:108px}
.wrong-dialogue-head{display:flex;align-items:center;gap:10px;padding:0 2px 14px;border-bottom:1px solid #d3dfcf;color:#224b3c}.wrong-dialogue-head strong{display:block;font-size:16px}.wrong-dialogue-head small{display:block;margin-top:3px;color:var(--muted);font-size:12px}.wrong-dialogue-mark{display:grid;place-items:center;width:31px;height:31px;border-radius:50%;background:#2a654e;color:#fff;box-shadow:0 4px 10px rgba(42,101,78,.2)}
.wrong-dialogue-transcript{display:flex;flex-direction:column;gap:11px;max-height:330px;margin:15px 0;overflow:auto;padding:3px 2px 5px}.wrong-dialogue-turn{display:flex;align-items:flex-start;gap:8px;max-width:84%}.wrong-dialogue-turn>span{display:grid;place-items:center;flex:0 0 27px;height:27px;border-radius:50%;background:#dcebd7;color:#345b43;font-size:11px;font-weight:700}.wrong-dialogue-message{min-width:0}.wrong-dialogue-bubble{display:flex;align-items:flex-start;gap:7px;padding:10px 10px 10px 13px;border:1px solid #d0dfca;border-radius:3px 13px 13px 13px;background:#fff;color:var(--ink)}.wrong-dialogue-bubble p{margin:0;flex:1;font-size:14px;line-height:1.65}.wrong-dialogue-speaker{flex:0 0 auto;display:grid;place-items:center;min-width:30px;min-height:30px;padding:3px;border-radius:50%;background:#f3f7ef;border-color:#c8d9c4;color:#3e7152;font-size:14px}.wrong-dialogue-speaker:hover:not(:disabled){background:#e1eddb}.wrong-dialogue-turn.student{align-self:flex-end;flex-direction:row-reverse}.wrong-dialogue-turn.student>span{background:#2a654e;color:#fff}.wrong-dialogue-turn.student .wrong-dialogue-bubble{border-color:#9cbba3;border-radius:13px 3px 13px 13px;background:#dfeede}.wrong-dialogue-inline-actions{padding-top:7px}.wrong-dialogue-inline-actions button{min-height:36px;padding:5px 14px;border-radius:999px;border-color:#95b58e;background:#eef6e9;color:#2f6849;font-size:12px;animation:wrong-dialogue-next-pulse 1.9s ease-in-out infinite}.wrong-dialogue-inline-actions button:hover:not(:disabled){background:#dfeeda}.wrong-dialogue-loading{margin:10px 0;padding:10px 12px;border-radius:9px;background:#f1f5ed;color:var(--muted);font-size:13px}.wrong-dialogue-composer{display:grid;grid-template-columns:minmax(0,1fr) auto auto}.wrong-dialogue-composer textarea{min-height:78px}.wrong-dialogue-composer>button{align-self:stretch;min-width:65px}.wrong-dialogue-actions{display:flex;justify-content:flex-end;gap:8px;margin-top:13px}.wrong-dialogue-actions button:last-child{margin-left:auto}@keyframes wrong-dialogue-next-pulse{0%,100%{box-shadow:0 0 0 0 rgba(72,131,87,0);transform:translateY(0)}50%{box-shadow:0 0 0 5px rgba(72,131,87,.16);transform:translateY(-1px)}}
@media(max-width:760px){.wrong-answer-dialogue{padding:14px}.wrong-dialogue-turn{max-width:94%}.wrong-dialogue-composer{grid-template-columns:1fr auto}.wrong-dialogue-composer textarea{grid-column:1/-1}.wrong-dialogue-composer>button{min-height:42px}.wrong-dialogue-transcript{max-height:280px}}

/* The next-sentence prompt glows without moving, so it remains easy to click. */
@keyframes wrong-dialogue-next-pulse{0%,100%{box-shadow:0 0 0 0 rgba(72,131,87,0);border-color:#95b58e}50%{box-shadow:0 0 0 5px rgba(72,131,87,.16);border-color:#548b5f}}
.main-idea-reader-tools{padding:0 0 16px;border-bottom:1px solid var(--line);align-items:center}.main-idea-reader-tools .muted{margin-right:auto;font-size:12px}.main-idea-reader-tools button{font-size:12px;padding:6px 12px;min-height:36px}

/* Fuel-station retrieval practice: two matched entry points, no speaking path. */
.fuel-training-tools{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 14px;margin:18px 0 12px}.fuel-training-button{display:grid;grid-template-columns:1fr auto;gap:3px 10px;align-items:center;text-align:left;padding:14px 17px;border:1px solid #b9cdb7;border-radius:13px;background:linear-gradient(135deg,#f8fbf5,#e8f0e5);color:#285641;box-shadow:0 5px 14px rgba(38,77,53,.07);transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.fuel-training-button:hover:not(:disabled),.fuel-training-button:focus-visible{transform:translateY(-2px);border-color:#71906f;box-shadow:0 9px 20px rgba(38,77,53,.13)}.fuel-training-button:disabled{opacity:.52;cursor:not-allowed;box-shadow:none}.fuel-training-button strong{font-size:18px;font-weight:700}.fuel-training-button small{grid-column:1/-1;color:#627966;font-size:11px}.fuel-training-kicker{font-size:11px;color:#69806c}.fuel-training-help{grid-column:1/-1;margin:0;padding:8px 2px;color:var(--muted);font-size:12px;line-height:1.55}.fuel-training-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px;color:var(--muted);font-size:12px}.fuel-training-top button{padding:7px 11px;min-height:34px;font-size:12px}.fuel-flash-shell,.fuel-dictation-shell,.fuel-training-summary{max-width:720px;margin:14px auto 4px}.fuel-flash-card{position:relative;display:grid;place-items:center;min-height:260px;padding:34px 28px;border:1px solid #b9cdb7;border-radius:18px;background:linear-gradient(145deg,#fbfdf9,#edf4e9);text-align:center;overflow:hidden;box-shadow:0 16px 36px rgba(36,79,55,.09);cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.fuel-flash-card:hover,.fuel-flash-card:focus-visible{transform:translateY(-2px);border-color:#6f9871;box-shadow:0 20px 42px rgba(36,79,55,.14);outline:none}.fuel-flash-card.revealed{background:linear-gradient(145deg,#f5faef,#e1eedb);cursor:default}.fuel-training-type{display:inline-block;padding:4px 9px;border-radius:999px;background:#e4eee0;color:#41684c;font-size:11px}.fuel-flash-card>.fuel-training-type{position:absolute;top:19px;left:20px}.fuel-flash-count{--flash-progress:100%;position:absolute;right:18px;top:15px;display:grid;place-items:center;width:50px;height:50px;border-radius:50%;background:conic-gradient(#315f48 var(--flash-progress),#dce9d8 0);color:#315f48;font-size:14px;font-weight:700;transition:background .05s linear}.fuel-flash-count::before{content:"";position:absolute;inset:4px;border-radius:50%;background:#fbfdf9}.fuel-flash-card.revealed .fuel-flash-count::before{background:#f5faef}.fuel-flash-count span{position:relative;z-index:1}.fuel-flash-card strong{max-width:90%;font:600 32px/1.4 Georgia,'Microsoft YaHei',serif;overflow-wrap:anywhere}.fuel-flash-meaning{margin:16px 0 0;color:#315f48;font-size:19px;line-height:1.6}.fuel-training-hint{text-align:center;margin:16px 0;color:var(--muted);font-size:13px}.fuel-training-rate{display:flex;justify-content:center;gap:10px}.fuel-training-rate button,.fuel-dictation-actions button{min-width:94px;border-radius:10px}.fuel-training-rate button:first-child{background:#315f48;color:#fff;border-color:#315f48}.fuel-dictation-shell{padding:20px 22px;border:1px solid #c4d4c0;border-radius:16px;background:#fbfdf9}.fuel-dictation-prompt{margin:20px 0 24px;color:#264e3b;font-size:24px;line-height:1.55;text-align:center}.fuel-dictation-slots{display:flex;flex-wrap:wrap;justify-content:center;gap:9px}.fuel-dictation-slot{min-height:45px;padding:7px 9px;border:0;border-bottom:2px solid #9bb49a;border-radius:0;background:transparent;text-align:center;font:500 18px/1.2 Georgia,serif}.fuel-dictation-slot:focus{outline:none;border-bottom-color:#2f694d;box-shadow:0 5px 0 -3px #d5e5d0}.fuel-dictation-slot.incorrect{border-bottom-color:#b85b43;background:#fff3ed}.fuel-dictation-slot.correct{border-bottom-color:#5a9166;background:#e8f2e5}.fuel-dictation-actions{display:flex;justify-content:center;margin-top:16px}.fuel-training-summary{padding:55px 28px;text-align:center;border:1px solid #c4d4c0;border-radius:16px;background:#f6faf2}.fuel-training-summary strong{display:block;font-size:23px;color:#285641}.fuel-training-summary p{color:var(--muted)}
@keyframes fuel-memory-remembered{0%{transform:scale(1)}38%{transform:scale(1.025);border-color:#5b9967;box-shadow:0 0 0 8px rgba(91,153,103,.12),0 22px 48px rgba(48,111,65,.18)}100%{transform:scale(1);border-color:#7daf82;box-shadow:0 16px 36px rgba(36,79,55,.09)}}
@keyframes fuel-memory-forgotten{0%,100%{transform:translateX(0)}25%{transform:translateX(-7px)}50%{transform:translateX(6px)}75%{transform:translateX(-3px)}}
@keyframes fuel-dictation-correct{0%{box-shadow:0 0 0 0 rgba(91,153,103,.25)}45%{box-shadow:0 0 0 10px rgba(91,153,103,.11)}100%{box-shadow:0 0 0 0 rgba(91,153,103,0)}}
.fuel-flash-card.memory-remembered{animation:fuel-memory-remembered .5s ease both;background:linear-gradient(145deg,#f1f9ed,#dcefd8)}.fuel-flash-card.memory-forgotten{animation:fuel-memory-forgotten .42s ease both;border-color:#d29079;background:linear-gradient(145deg,#fffaf5,#f8e6dd)}.fuel-dictation-shell.is-wrong{animation:fuel-memory-forgotten .42s ease both;border-color:#d29079}.fuel-dictation-shell.is-correct{animation:fuel-dictation-correct .55s ease both;border-color:#6fa77a;background:#f3faef}
@media(prefers-reduced-motion:reduce){.fuel-flash-card.memory-remembered,.fuel-flash-card.memory-forgotten,.fuel-dictation-shell.is-wrong,.fuel-dictation-shell.is-correct{animation:none}}
.fuel-dictation-shell{max-width:620px;margin:8px auto 4px;padding:16px 20px}.fuel-dictation-shell .fuel-training-top{margin-bottom:12px}.fuel-dictation-prompt{margin:10px 0 14px;font-size:21px}.fuel-dictation-slots{gap:8px}.fuel-dictation-slot{min-width:112px;min-height:43px;padding:6px 10px}.fuel-dictation-answer{display:flex;align-items:center;justify-content:center;gap:8px;min-height:28px;margin:10px 0 0;color:#5c7060;font-size:13px;opacity:0;visibility:hidden;transition:opacity .12s ease,visibility .12s ease}.fuel-dictation-answer.is-visible{opacity:1;visibility:visible}.fuel-dictation-answer span{padding:2px 7px;border-radius:999px;background:#edf3e8;color:#5a7560;font-size:11px}.fuel-dictation-answer strong{font:600 17px/1.4 Georgia,'Microsoft YaHei',serif;color:#285641;overflow-wrap:anywhere}.fuel-training-hint kbd{padding:1px 5px;border:1px solid #bdcdbc;border-bottom-width:2px;border-radius:4px;background:#fff;color:#315f48;font:600 11px system-ui}.fuel-dictation-actions{margin-top:12px}.fuel-dictation-actions button{min-width:82px;min-height:40px;padding:8px 16px}
@media(max-width:760px){.fuel-dictation-shell{max-width:none;margin:6px auto 4px;padding:15px 14px}.fuel-dictation-prompt{margin:9px 0 13px;font-size:20px}.fuel-dictation-slot{min-width:94px}}
@media(max-width:760px){.fuel-training-tools{grid-template-columns:1fr}.fuel-training-button{padding:13px 15px}.fuel-flash-card{min-height:220px;padding:30px 18px}.fuel-flash-card strong{font-size:25px}.fuel-dictation-shell{padding:17px 14px}.fuel-dictation-prompt{font-size:20px;margin:16px 0 22px}.fuel-dictation-slot{font-size:16px;min-height:42px}.fuel-training-top{align-items:flex-start}.fuel-training-top span{padding-top:8px}}
@media(max-width:760px){.fuel-station-dialog .modal-head{grid-template-columns:1fr;gap:14px}.fuel-station-review-actions,.fuel-station-header-actions{justify-self:start;flex-wrap:wrap}}
.fuel-insight dt{font-size:11px;color:#547156;margin-bottom:5px}