/* M2 application skin. Original M0 typography and stage CSS remain in style.css. */
.m2 {--canvas:#f4eddd;--paper:#fcf8ee;--ink:#3e4438;--muted:#85826f;--green:#53634b;--gold:#ad8755;background:var(--canvas);font-size:15px;line-height:1.65}
.m2 a{color:inherit;text-decoration:none}.m2 button,.m2 input,.m2 select{font:inherit}.m2 button{border:0}.m2 button:disabled{cursor:default;opacity:.55}
.m2 svg{width:22px;height:22px;flex-shrink:0;vertical-align:middle}.m2 h1,.m2 h2,.m2 h3{font-family:'Songti SC','Noto Serif CJK SC','STSong',serif;font-weight:500;line-height:1.45;margin:0 0 12px}.m2 h1{font-size:29px;letter-spacing:.02em}.m2 h2{font-size:19px}.m2 h3{font-size:17px}.m2 p{margin:0 0 12px}.m2 strong{font-weight:600}.m2 mark{background:transparent;color:inherit;border-bottom:2px solid #c9995c;padding:0 1px}
.app-shell{width:min(100%,600px);min-height:100dvh;margin:auto;padding:0 24px calc(106px + env(safe-area-inset-bottom))}.top-brand{display:flex;justify-content:space-between;align-items:center;padding:22px 0 18px;border-bottom:1px solid #d6cdb8;font:17px Cormorant,Georgia,serif;letter-spacing:.03em}.top-brand span{font:10px sans-serif;letter-spacing:.18em;color:var(--muted)}.page-heading{padding:30px 0 21px}.page-heading h1{margin-top:5px}.eyebrow{font-size:10px;font-weight:500;letter-spacing:.17em;text-transform:uppercase;color:var(--muted)}.muted,.caption{color:var(--muted)}.caption{font-size:12px;line-height:1.7}.centered{text-align:center}.english{font:20px/1.55 Cormorant,Georgia,serif}.paper{background:var(--paper);border:1px solid #e0d7c4;border-radius:5px;padding:22px;margin:0 0 22px;box-shadow:0 3px 6px #66593603}.section-head{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:14px}.section-head h2,.section-head p{margin:0}.primary,.secondary,.text-button,.round-button{display:inline-flex;justify-content:center;align-items:center;gap:12px;min-height:48px;border-radius:4px;padding:12px 18px;font-size:14px;font-weight:500;transition:background .2s}.m2 .primary{background:var(--green);color:#fffaf0}.m2 .secondary{background:transparent;border:1px solid #ccc3ae}.text-button{background:transparent;padding:8px 0;color:var(--green)}.round-button{border:1px solid #d5ccb8!important;border-radius:50%;width:46px;height:46px;padding:10px;background:transparent}.wide{width:100%}.primary:hover{background:#3e503a}.secondary:hover{background:#eee7d7}.m2 :focus-visible{outline:2px solid #9c7242;outline-offset:4px}.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.tabbar{position:fixed;bottom:0;left:50%;transform:translateX(-50%);z-index:20;width:min(100%,600px);height:calc(76px + env(safe-area-inset-bottom));padding:9px 15px calc(8px + env(safe-area-inset-bottom));display:grid;grid-template-columns:repeat(4,1fr);background:#f9f4e8f5;border-top:1px solid #d6cdb8;backdrop-filter:blur(14px)}.tabbar a{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:4px;color:#8e8d7e;font-size:11px;letter-spacing:.12em}.tabbar svg{width:22px;height:22px}.tabbar .active{color:var(--green);font-weight:600}.tabbar .active:after{content:'';height:3px;width:3px;border-radius:50%;background:var(--green);position:absolute;bottom:calc(7px + env(safe-area-inset-bottom))}
.bunny{width:100px;height:110px;object-fit:contain;mix-blend-mode:multiply}.hero{position:relative;overflow:hidden;background:linear-gradient(125deg,#fdf9ed,#edeedb);padding:25px 22px 22px}.hero-copy{position:relative;z-index:1;width:75%}.hero h2{font-size:28px;margin:2px 0 5px}.hero-copy>p:not(.eyebrow){font-size:12px;color:var(--muted)}.hero-bunny{position:absolute;right:-10px;top:22px;width:158px;height:180px;transform:rotate(4deg)}.daily-counts{display:flex;gap:38px;margin:15px 0 25px}.daily-counts div{display:flex;flex-direction:column}.daily-counts strong{font:43px/1.15 Cormorant,Georgia,serif}.daily-counts span{font-size:11px;color:var(--muted);margin-top:4px}.hero>.primary{position:relative;z-index:1;justify-content:space-between}.plan-panel{padding:16px 18px;margin-top:-10px}.m2 summary{cursor:pointer;font-size:14px;padding:3px 0}.plan-panel summary span{font-size:11px;color:var(--muted);float:right}.plan-panel .form-stack{margin-top:20px}.notice{font-size:13px;color:#916b43;padding:12px;background:#ede3ce}.form-stack{display:grid;gap:20px}.form-stack label{display:grid;gap:7px;font-size:13px}.m2 input:not([type=checkbox]),.m2 select{width:100%;min-height:46px;background:#fffdf6;border:1px solid #d8d0bd;border-radius:4px;color:var(--ink);padding:10px 12px;min-width:0}.form-stack small{color:var(--muted);font-size:11px;font-weight:400}.form-stack .switch-label{display:flex;justify-content:space-between;align-items:center;min-height:40px}.switch-label input{width:21px;height:21px;accent-color:var(--green)}
.progress-section{padding:14px 0 20px}.progress-section .section-head{margin-bottom:0}.popbook{width:280px;max-width:100%;height:180px;margin:auto;position:relative;perspective:650px;isolation:isolate}.book-base{position:absolute;width:245px;height:110px;background:linear-gradient(90deg,#e4d5b5,#faf3db 48%,#d9c6a0 50%,#fcf6e1 52%,#e8d8b6);left:50%;bottom:18px;border-radius:8px 8px 12px 12px;transform:translateX(-50%) rotateX(48deg);border-bottom:7px solid #7b785e;box-shadow:0 5px 0 #d7c6a4,0 8px 0 #888263,0 18px 22px #7e715327}.book-shadow{position:absolute;bottom:3px;left:28px;width:225px;height:45px;border-radius:50%;background:#79674115;filter:blur(12px)}.rising-page{position:absolute;width:72px;height:100px;bottom:48px;left:calc(36px + var(--i)*29px);transform-origin:50% 100%;transform:rotateX(calc(75deg + var(--rise))) rotateZ(calc((var(--i) - 2.5)*2deg));background:linear-gradient(135deg,#faf4df,#e4d4b1);border:1px solid #c7b58f;border-radius:26px 26px 3px 3px;box-shadow:2px 2px 8px #6f64431c;transition:transform 1s ease}.rising-page:after{content:'';position:absolute;left:13px;right:13px;top:22px;height:52px;border:1px solid #99a083;border-radius:28px 28px 0 0;background:linear-gradient(150deg,#b9c6a06b,transparent)}.book-bunny{position:absolute;z-index:10;width:66px;height:100px;object-fit:contain;left:109px;bottom:26px;filter:drop-shadow(0 4px 2px #58492f15)}.streak-panel .section-head{margin-bottom:5px}.streak-panel .bunny{width:54px;height:60px;margin-top:-10px}.streak-panel strong{font-family:inherit;color:var(--green)}.week-dots{display:flex;justify-content:space-between;gap:5px;margin:12px 0 20px}.week-dots>div{text-align:center}.day-dot{width:31px;height:31px;display:grid;place-items:center;border:1px solid #d9d2bf;border-radius:50%;font-size:10px;color:#999684}.day-dot.lit{background:var(--green);border-color:var(--green);color:var(--paper)}.day-dot.frozen{background:#dde2e0;color:#61727c}.day-dot.current{outline:1px solid #ae8b56;outline-offset:4px}.day-dot svg{width:16px;height:16px}.week-dots small{font-size:10px;color:var(--muted);display:block;margin-top:7px}.freeze-line{display:flex;gap:7px;align-items:center;font-size:12px;padding-top:14px;border-top:1px solid #e5decc}.freeze-line strong{margin-left:auto;font-size:11px}.streak-panel .caption{margin:10px 0 0}.daily-word .stage{border-radius:2px}.daily-word-title{font:40px/1.2 Cormorant,Georgia,serif;display:flex;justify-content:space-between;align-items:center;margin:18px 0 8px}.daily-word p:not(.caption){font-size:14px}.daily-word .secondary{margin-top:6px}.reading .passage{font:23px/1.65 Cormorant,Georgia,serif;letter-spacing:.005em}.reading-word{border-bottom:1px solid #8e9b79}.reading-word.unlearned{border-bottom-style:dashed;background:#d9ba6a18}.reading-word:hover{background:#e6ddbc}.reading p:last-child{margin-bottom:0}
.chapter-map{position:relative}.chapter-map:before{content:'';position:absolute;top:40px;bottom:40px;left:25px;border-left:1px dashed #c7bea8}.chapter-row{display:grid;grid-template-columns:48px 1fr 24px;gap:16px;align-items:center;position:relative;min-height:114px;padding:19px 0}.chapter-row h2{font-size:20px;margin:0 0 5px}.chapter-row p{margin:0 0 5px}.chapter-number{height:48px;width:48px;display:grid;place-items:center;font:25px Cormorant,Georgia,serif;border:1px solid #c9c4ad;background:var(--canvas);border-radius:50%;position:relative}.chapter-row.open .chapter-number{background:var(--green);color:var(--paper);border-color:var(--green)}.chapter-row.locked{opacity:.55}.thin-progress{background:#ded8c3;height:3px;max-width:180px;margin-top:10px}.thin-progress i{display:block;height:100%;background:var(--green)}.back-link{display:inline-flex;gap:4px;align-items:center;min-height:44px;font-size:13px;margin-top:12px}.back-link+.page-heading{padding-top:10px}.level-route{display:grid;grid-template-columns:repeat(6,1fr);gap:6px;margin-bottom:24px}.level-route button{background:var(--paper);border:1px solid #d9cfb9;border-radius:35px;padding:12px 0;display:grid;gap:5px}.level-route strong{font:20px Georgia,serif}.level-route small{font-size:9px;color:var(--muted)}.level-route button.active{background:var(--green);color:var(--paper)}.level-route .active small{color:#e6e4d2}.filter-panel{padding:15px;background:#ebe4d2;border-radius:4px}.filter-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:14px}.filter-grid label>span{display:block;font-size:10px;color:var(--muted);margin-bottom:4px}.filter-grid select{font-size:12px;padding:8px;min-height:40px}#word-results>.section-head{margin-top:12px;margin-bottom:7px}.word-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.word-tile{background:var(--paper);border:1px solid #ded4bf;padding:14px;border-radius:4px;display:flex;flex-direction:column;min-height:140px}.tile-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.word-tile strong{font:26px/1.1 Cormorant,Georgia,serif;overflow-wrap:anywhere;margin:0 0 8px}.word-tile small{font-size:10px;color:var(--muted)}.tile-meaning{font-size:12px;min-height:22px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.state-dot{width:6px;height:6px;border:1px solid #b8b29d;border-radius:50%}.state-dot.learned,.state-dot.familiar{background:#748463;border-color:#748463}.state-dot.seen{background:#d6c59b}.state-dot.familiar{box-shadow:0 0 0 3px #74846320}.empty{padding:50px 0;text-align:center;color:var(--muted)}
.fullscreen{padding-bottom:32px}.screen-bar{display:flex;gap:8px;align-items:center;justify-content:space-between;min-height:68px}.screen-bar .eyebrow{font-size:9px}.screen-bar .text-button{font-size:13px}.full-word-card{background:var(--paper);border:1px solid #ded4bf;border-radius:5px;overflow:hidden;margin-bottom:20px}.m2 .stage{width:100%;aspect-ratio:4/3;height:auto;border:0;display:block}.m2 .stage-mount{width:100%;height:100%}.m2 .plate-number{font-size:8px;letter-spacing:.1em}.m2 .replay-hint{font-size:9px}.word-copy{padding:19px}.word-title{display:flex;justify-content:space-between;align-items:center;gap:12px}.word-title h1{font:48px/1.1 Cormorant,Georgia,serif;margin:0;overflow-wrap:anywhere}.phonetic-row{display:flex;flex-wrap:wrap;align-items:center;gap:9px;font-size:12px;color:var(--muted);margin:10px 0 14px}.word-meaning{font-size:19px;line-height:1.5}.definition{font:18px/1.45 Cormorant,Georgia,serif;color:#73765f}.example-block{border-left:2px solid #b6b99b;padding-left:15px;margin:22px 0}.example-block p[lang=en]{font:23px/1.4 Cormorant,Georgia,serif}.example-block .muted{font-size:12px}.example-block .text-button{font-size:11px;min-height:36px}.example-block svg{width:16px;height:16px}.word-detail{border-top:1px solid #e1d9c5;padding:17px 0;font-size:14px}.word-detail summary{font-size:13px}.word-detail p,.word-detail blockquote{margin:12px 0}.word-detail [lang=en]{font:22px/1.5 Cormorant,Georgia,serif}.word-detail blockquote{padding-left:14px;border-left:2px solid #cbbd9f}.chip{display:inline-block;border:1px solid #d9d2bd;border-radius:3px;padding:3px 7px;font-size:10px;color:#77816c;line-height:1.5;margin:0 5px 5px 0}.skill-tags{padding:12px 0 18px}.skill-tags .caption{font-size:10px}.word-actions{display:flex;gap:10px}.word-actions>*{flex:1;font-size:12px;padding:10px}.pc-reading-paper{position:absolute;left:55px;top:22px;width:290px;height:184px;transform-origin:50% 100%;padding:22px 24px;background:linear-gradient(90deg,#faf3dd 48%,#dcd0b2 50%,#faf5e5 52%);border:1px solid #d2c2a2;box-shadow:1px 6px 8px #5a4b2e15;border-radius:5px 20px 3px 5px;display:flex;flex-direction:column;justify-content:center;gap:12px;backface-visibility:hidden}.pc-reading-heading{font:8px sans-serif;letter-spacing:2px;text-align:center;color:#9a8969}.pc-reading-text{font:18px/1.4 Cormorant,Georgia,serif;color:#61563f;text-align:left}.m2 .pc-reading-text mark{border:1.5px solid #9a7148;border-radius:50%;padding:1px 3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}
.practice-due{display:flex;align-items:center;gap:20px}.practice-due .bunny{width:90px;height:110px}.practice-due h2{font:38px Cormorant,Georgia,serif}.practice-due h2 small{font:13px sans-serif;margin-left:8px;color:var(--muted)}.practice-types{margin:26px 0}.practice-type{display:flex;align-items:center;gap:18px;width:100%;text-align:left;background:transparent;padding:22px 0;border-bottom:1px solid #d8cfb9!important}.practice-type h2{margin:0 0 4px}.practice-type p{margin:0}.practice-type>svg{margin-left:auto}.type-num{font:27px Cormorant,Georgia,serif;color:#aaa28b}.session-meter{height:3px;background:#ded7c2}.session-meter i{height:100%;background:var(--green);display:block;transition:width .4s}.question-area{padding:30px 0 10px}.question-area h1{font-size:24px;margin-bottom:25px}.question-meaning{font-family:'Songti SC',serif;font-size:30px;padding:15px 0 30px}.question-sentence{font:26px/1.5 Cormorant,Georgia,serif;margin:25px 0!important}.choices{display:grid;gap:12px}.choice{display:flex;gap:17px;align-items:center;width:100%;padding:17px;text-align:left;background:var(--paper);border:1px solid #d7ccb5!important;border-radius:4px;font:26px Cormorant,Georgia,serif!important;min-height:66px}.choice-letter{border:1px solid #d4c9b0;border-radius:50%;width:26px;height:26px;display:grid;place-items:center;font:11px sans-serif;color:var(--muted)}.m2 .choice:disabled{opacity:1;color:#7d7b6c}.m2 .choice.is-correct{background:#e3ead9;border-color:#83926f!important;color:#3e5339}.m2 .choice.is-wrong{background:#f1e2d8;border-color:#b58b70!important}.listen-question{margin:10px auto 26px;display:flex;flex-direction:column;gap:10px;align-items:center;background:#e7e8d6;border:1px solid #c7c9ae!important;border-radius:50%;width:130px;height:130px;justify-content:center;font-size:12px}.listen-question svg{width:36px;height:36px}.question-stage{margin:0 0 22px;border:1px solid #ded5c2;border-radius:4px;overflow:hidden}#spelling-form{display:grid;gap:14px}#spelling-form input{font-size:25px;padding:16px;font-family:Georgia,serif}.feedback{display:flex;align-items:center;gap:15px;padding:16px 0}.feedback .bunny{width:60px;height:75px}.feedback p{font-size:15px;margin:0}.feedback.correct .bunny{animation:cheer .55s ease 2}.session-book{margin-top:20px;text-align:center}.session-book .popbook{height:140px;transform:scale(.8);margin-top:-10px;margin-bottom:-10px}.session-book .caption{font-size:10px}.explanation{background:var(--paper);padding:22px;border:1px solid #ddd1b9;border-radius:4px;margin:20px 0}.explanation>.bunny{float:right;width:62px;height:75px}.explanation section+section{border-top:1px solid #e0d5bd;padding-top:18px;margin-top:18px}.explanation h2{font-size:17px}.explanation p{font-size:14px;overflow-wrap:anywhere}.explanation .english{font-size:20px}.session-finish{text-align:center;padding-top:25px}.session-finish>.bunny{width:140px;height:150px}.session-finish .page-heading{padding-top:12px}.session-finish h1{font-size:26px}.session-finish>p{font-size:13px}.speaking audio{width:100%;margin-top:20px}
.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:#d9d0bc;border:1px solid #d9d0bc}.stats-grid>div{background:var(--canvas);padding:21px;display:flex;flex-direction:column;align-items:center;gap:6px}.stats-grid strong{font:36px Cormorant,Georgia,serif}.stats-grid span{font-size:11px;color:var(--muted)}.xp-count{text-align:center;font-size:12px;letter-spacing:.08em;padding:18px 0}.xp-count strong{font-size:17px;color:var(--green);margin-left:8px}.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.reward{border:1px solid #d7cbb0;padding:10px 4px;text-align:center;background:#f4efdf;border-radius:36px 36px 5px 5px;min-height:120px;display:flex;align-items:center;justify-content:center;flex-direction:column}.reward img{height:75px;max-width:100%;object-fit:contain}.reward svg{width:40px;height:50px;color:#a29674}.reward p{font-size:10px;margin:10px 0 0}.reward.locked{opacity:.4;border-style:dashed}.collection-shelf{display:grid;grid-template-columns:repeat(12,1fr);gap:3px;margin-top:24px}.collection-shelf span{height:42px;display:grid;place-items:center;background:#e3ddcc;border:1px solid #d7cfb7;border-radius:3px 3px 0 0;font:10px Georgia,serif;color:#aaa38e}.collection-shelf .lit{background:#bec7aa;color:#4d5d3f}.collection>.caption:last-child{margin:14px 0 0}.backup-panel{display:grid;gap:12px}.import-label{position:relative;overflow:hidden;cursor:pointer}.import-label input{position:absolute;inset:0;opacity:0;cursor:pointer}.danger{color:#98765d}.offline-status{font-size:11px;margin-top:20px!important}
.onboarding{text-align:center;padding:35px 0 20px;min-height:calc(100dvh - 110px);display:flex;flex-direction:column;align-items:center}.onboarding .eyebrow{font-size:9px}.onboard-art{position:relative;height:280px;width:100%;margin:25px 0 10px;display:grid;align-items:end;background:radial-gradient(ellipse,#d9ddb77d,transparent 65%)}.onboard-art>.popbook{transform:scale(1.1);margin-bottom:15px}.onboard-art>.bunny{position:absolute;width:115px;height:150px;right:8%;bottom:25px;animation:float-in 1.5s ease both}.onboard-0 .rising-page{animation:page-open 1.2s ease both;animation-delay:calc(var(--i)*120ms)}.onboard-1{background:radial-gradient(ellipse,#e7d7b77d,transparent 65%)}.onboard-2{background:radial-gradient(ellipse,#ccd7d27d,transparent 65%)}.page-number{font:13px Georgia,serif;letter-spacing:.2em;color:var(--gold);margin-bottom:16px!important}.onboarding h1{font-size:29px;line-height:1.5;max-width:320px}.intro-copy{font-size:14px;color:var(--muted);max-width:280px;margin:0 auto!important}.onboard-dots{display:flex;justify-content:center;gap:10px;margin:30px 0}.onboard-dots span{width:5px;height:5px;background:#c7bea6;border-radius:50%}.onboard-dots .active{background:var(--green);width:18px;border-radius:5px}.onboarding>.primary{margin-top:auto;justify-content:space-between}.plan-onboarding>.bunny{width:110px;height:125px}.plan-onboarding .page-heading{padding:20px 0}.plan-onboarding h1{font-size:26px}.plan-onboarding .form-stack{text-align:left;width:100%;margin-top:20px}.plan-onboarding .muted{font-size:13px}.loading-story{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;padding:25px;text-align:center}.loading-story .bunny{width:150px;height:180px;animation:float-in 1s ease both}.loading-story p{font-size:14px;color:var(--muted);margin:25px 0}.loading-pages{display:flex;gap:5px}.loading-pages i{display:block;width:28px;height:40px;background:#e1d1a8;border-radius:8px 8px 0 0;transform-origin:bottom;animation:page-open 2s ease infinite}.loading-pages i:nth-child(2){animation-delay:.3s}.loading-pages i:nth-child(3){animation-delay:.6s}
#toast{position:fixed;z-index:100;bottom:110px;left:50%;transform:translate(-50%,20px);max-width:calc(100% - 40px);width:max-content;padding:12px 20px;border-radius:5px;background:#3e4838;color:#fff9eb;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;box-shadow:0 5px 20px #32312626}#toast.show{opacity:1;transform:translate(-50%,0)}#share-dialog{border:1px solid #d1c5ac;border-radius:8px;background:var(--paper);color:var(--ink);padding:18px;max-width:440px;width:calc(100% - 30px);max-height:90dvh}#share-dialog::backdrop{background:#30332788;backdrop-filter:blur(3px)}#share-dialog img{display:block;width:100%;max-height:60dvh;object-fit:contain}#share-dialog .screen-bar{min-height:45px;margin-bottom:12px}#share-dialog h2{font-size:18px;margin:0}#share-dialog .caption{margin:12px 0}.reduce-motion *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
@keyframes page-open{0%{transform:rotateX(85deg)}50%,100%{transform:rotateX(10deg)}}@keyframes float-in{from{transform:translateY(14px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes cheer{50%{transform:translateY(-7px) rotate(4deg)}}
@media(min-width:700px){.app-shell{border-left:1px solid #e2d8c3;border-right:1px solid #e2d8c3;padding-left:42px;padding-right:42px}.m2{background:radial-gradient(ellipse at top,#f8f2e7,#e8dfc9)}.tabbar{border-left:1px solid #ded4bd;border-right:1px solid #ded4bd}.onboard-art{height:330px}.onboarding h1{max-width:none}.word-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.hero-bunny{right:5px;width:180px;height:200px}}
@media(max-width:360px){.app-shell{padding-left:16px;padding-right:16px}.m2 h1{font-size:25px}.paper{padding:17px}.hero-bunny{right:-23px;width:140px;opacity:.9}.hero-copy{width:80%}.hero h2{font-size:25px}.plan-panel summary span{float:none;display:block;margin-top:5px}.onboard-art{height:220px;margin-top:8px}.onboarding{padding-top:20px}.onboarding h1{font-size:26px}.onboard-dots{margin:20px 0}.word-title h1{font-size:40px}.chapter-row{gap:10px}.choice{min-height:58px}.level-route{gap:4px}.word-copy{padding:15px}.word-meaning{font-size:17px}.example-block{margin:15px 0}}
@media(prefers-reduced-motion:reduce){.m2 *{animation:none!important;transition:none!important;scroll-behavior:auto!important}}
/* The first onboarding page opens a real hinged cover over the paper leaves. */
.onboard-cover{position:absolute;left:calc(50% - 122px);bottom:45px;width:244px;height:145px;z-index:12;transform-origin:left center;transform:perspective(650px) rotateY(-115deg);animation:cover-open 2.2s ease both;border:1px solid #788264;border-left:7px solid #697359;border-radius:3px 10px 10px 3px;background:linear-gradient(135deg,#6e7c60,#485a43);color:#f6edd6;box-shadow:3px 8px 12px #52492f25;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;pointer-events:none}.onboard-cover span{font:12px Georgia,serif;letter-spacing:.08em}.onboard-cover strong{font:23px 'Songti SC',serif;border-top:1px solid #c2be9d88;padding-top:14px}@keyframes cover-open{0%,15%{transform:perspective(650px) rotateY(0)}100%{transform:perspective(650px) rotateY(-115deg)}}
/* Focus remains visible against paper; native keyboard navigation is supported. */
.m2 :focus-visible{outline:2px solid #7c6541;outline-offset:4px}.tabbar a[aria-current=page]{color:var(--green)}
/* M2 round 2: compact chapter, honest paper sources, opaque onboarding art. */
.word-grid{display:block}.word-tile{display:grid;grid-template-columns:56px minmax(0,1fr) 12px;align-items:center;gap:12px;min-height:66px;padding:9px 4px;border:0;border-bottom:1px solid #ded4bf;background:transparent;border-radius:0}.word-tile>img{width:56px;height:42px;object-fit:cover;border-radius:3px}.word-tile strong{font-size:22px;margin:0;display:block}.word-tile .tile-meaning{display:block;font-size:12px}.word-section{border-top:1px solid #d5c9ad;padding:12px 0}.word-section summary{font-size:13px;min-height:36px;cursor:pointer;line-height:1.8}.pc-example-paper{background:#fffdf7;border-color:#d8d3c7}.pc-reading-paper{height:auto;min-height:184px;max-height:235px;top:5px;padding:15px 18px;gap:8px}.pc-reading-text{line-height:1.2;overflow-wrap:anywhere}.onboard-art .bunny,.onboard-art .book-bunny{opacity:1!important;animation:none!important}.held-book{position:absolute;width:78px;right:calc(8% + 18px);bottom:38px;z-index:15}.passage-translation{font-size:14px;line-height:1.8;border-top:1px solid #ded4bf;padding-top:14px}.reading-word{display:inline;padding:4px 0;scroll-margin-top:80px}.level-route small{font-size:12px}
.static-still{width:100%;height:auto;display:block}.static-word audio{width:100%;margin:10px 0}.static-word h2{font-size:16px}
.explore-links{display:flex;gap:12px;margin-bottom:24px}.explore-links>*{flex:1}.star-grid{display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:2px;padding:16px 0 30px;background:radial-gradient(ellipse,#efe4cd,transparent)}.word-star{display:grid;place-items:center;min-height:32px;color:#c1b59d;font-size:18px;border-radius:50%}.word-star.lit{color:#355c43;background:#fff8df;text-shadow:0 0 6px #bcb353}.word-star:focus-visible{outline:2px solid #355c43}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.topic-card{text-align:left;margin:0;padding:16px;min-width:0}.topic-card h2{font-size:20px}.topic-card p{font-size:13px}
.pc-diagram{position:absolute;left:0;top:0;width:400px;height:260px;transform:translateZ(8px);backface-visibility:hidden}.pc-diagram svg{display:block;width:100%;height:100%;overflow:visible}

/* UX round 2: one cover, one setup sheet, no intermediate selling pages. */
.single-onboarding{min-height:calc(100dvh - 100px);padding:8px 0 0;justify-content:flex-end}
.single-onboarding .onboard-art{height:155px;margin:0;flex:1;min-height:135px;max-height:235px;overflow:hidden}
.single-onboarding .onboard-art>.popbook{transform:scale(.76);margin-bottom:-20px}
.single-onboarding .onboard-cover{width:180px;height:108px;left:calc(50% - 90px);bottom:8px}
.single-onboarding .onboard-cover strong{font-size:18px}
.setup-sheet{width:100%;text-align:left;border-radius:22px 22px 5px 5px;margin:0;padding:20px;animation:setup-rise .6s 1s both}
.setup-sheet h1{font-size:23px;max-width:none}.setup-sheet .form-stack{grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.setup-sheet form>button{grid-column:1/-1}.setup-sheet label{font-size:12px}
@keyframes setup-rise{from{transform:translateY(25px);opacity:0}to{transform:none;opacity:1}}
.context-tip{display:block!important;width:fit-content;max-width:100%;text-align:left;font:12px/1.7 inherit!important;padding:10px 14px!important;margin:8px 0 14px;border:1px solid #c8b78c!important;border-radius:3px 14px 14px 14px;background:#f5eccf;color:var(--ink);box-shadow:2px 3px 0 #a28e6420;position:relative;z-index:2}
.today-thumbs{display:flex;gap:10px;overflow-x:auto;padding-top:18px;position:relative;z-index:1}.today-thumbs a{flex:0 0 80px;text-align:center;font-size:14px}.today-thumbs img{display:block;width:80px;height:60px;object-fit:cover;border-radius:4px;border:1px solid #ccbea2}.today-thumbs span{display:block;overflow-wrap:anywhere;margin-top:4px}
.daily-counts{gap:24px}.daily-counts strong{font-size:37px}.hero-copy{width:85%}.hero-bunny{opacity:.75}.resume-note{position:relative;z-index:1;font-size:14px;color:var(--green)}
.word-title{flex-wrap:wrap}.word-title h1{flex:1;min-width:120px}.word-extra h2{font-size:16px}.recall-cover{padding:40px 22px;text-align:center;background:var(--paper);border:1px dashed var(--gold);border-radius:6px}.recall-cover h1{font-size:44px}.recall-cover .primary{margin-top:24px}.slow-audio{display:block;margin:0 auto 20px}.listen-question{margin-bottom:8px}
.forecast-bars{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px;height:135px;align-items:end}.forecast-day{display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:5px;font-size:12px}.forecast-day i{display:block;background:var(--green);width:75%;border-radius:3px 3px 0 0;min-height:3px}.forecast-day small{font-size:10px;white-space:nowrap}
.activity-heatmap{display:grid;grid-template-rows:repeat(7,1fr);grid-auto-flow:column;grid-template-columns:repeat(20,minmax(0,1fr));gap:3px}.heat-day{aspect-ratio:1;display:block;background:#e8e0ce;border-radius:2px}.heat-day[data-intensity="1"]{background:#c5cdb0}.heat-day[data-intensity="2"]{background:#9eaf89}.heat-day[data-intensity="3"]{background:#788f62}.heat-day[data-intensity="4"]{background:#4e6842}.heat-day.future{opacity:.2}
/* Selectors address explicitly English content only, never the UI language root. */
.m2{--english-font:Cormorant,Georgia,serif}.m2 [lang="en"],.m2 [lang="en-US"],.m2 .english,.m2 #answer{font-family:var(--english-font)!important}.m2 .english{color:inherit}
html[data-english-font="sans"] .m2{--english-font:-apple-system,BlinkMacSystemFont,Arial,sans-serif}
html[data-english-font="classic"] .m2{--english-font:'Palatino Linotype',Palatino,'Book Antiqua',serif}
/* The OS preference is read only after the explicit 'system' selection. */
html[data-theme="dark"]{color-scheme:dark}
html[data-theme="dark"] .m2{--canvas:#182734;--paper:#213442;--ink:#eee5d3;--muted:#b7b9b1;--green:#adbf97;--gold:#d3b47f;background:var(--canvas)}
html[data-theme="dark"] .m2 :is(.paper,.full-word-card,.word-tile,.word-section,.top-brand,.tabbar,.choice,.secondary,.screen-bar,.filter-panel,.stats-grid,.round-button){border-color:#53616a!important}
html[data-theme="dark"] .m2 :is(.hero,.tabbar,.filter-panel,.reward,.listen-question,.setup-sheet){background:var(--paper)}
html[data-theme="dark"] .m2 :is(input:not([type=checkbox]),select){background:#182b3a;border-color:#68747a;color:var(--ink)}
html[data-theme="dark"] .m2 .primary{color:#192c24;background:var(--green)}
html[data-theme="dark"] .m2 :is(.secondary:hover,.context-tip,.notice){background:#354555;color:var(--ink)}
html[data-theme="dark"] .m2 :is(.definition,.chip,.choice:disabled){color:var(--ink)}
html[data-theme="dark"] .m2 .bunny{mix-blend-mode:normal}
html[data-theme="dark"] .m2 .choice.is-correct{background:#365342;color:#f0ecd9}
html[data-theme="dark"] .m2 .choice.is-wrong{background:#634b43;color:#f0ecd9}
html[data-theme="dark"] .m2 .heat-day[data-intensity="0"]{background:#384b59}
html[data-theme="dark"] .m2 .star-grid{background:radial-gradient(ellipse,#2e4353,transparent)}
html[data-theme="dark"] .m2 .word-star.lit{color:#e0cf91;background:#354b57}
@media(min-width:1100px){
 .app-shell{width:min(100%,1120px);padding:0 40px 48px;display:grid;grid-template-columns:1fr 440px;align-content:start;gap:0 24px;border:0}
 .top-brand{grid-row:1;grid-column:1;height:82px;margin-bottom:12px}
 .tabbar{grid-column:2;grid-row:1;position:static;transform:none;width:auto;height:82px;padding:12px 0;border:0;border-bottom:1px solid #d6cdb8;backdrop-filter:none;background:transparent}
 .tabbar a{flex-direction:row;font-size:13px;gap:8px}.tabbar .active:after{display:none}.app-shell>main{grid-column:1/-1;min-width:0}
 .page-heading{padding-top:24px}.app-shell.fullscreen{grid-template-columns:1fr}.fullscreen .top-brand{grid-column:1}
 #app[data-route="/today"] main{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:0 30px;align-items:start}
 #app[data-route="/today"] main>.page-heading{grid-column:1/-1}#app[data-route="/today"] .hero{grid-column:1;grid-row:2 / span 2}#app[data-route="/today"] .progress-section{grid-column:2;grid-row:2}#app[data-route="/today"] .streak-panel{grid-column:2;grid-row:3}#app[data-route="/today"] .plan-panel{grid-column:1}#app[data-route="/today"] .offline-status{grid-column:1/-1}
 .chapter-map{display:grid;grid-template-columns:1fr 1fr;column-gap:50px}.chapter-map:before{display:none}
 .filter-grid{grid-template-columns:repeat(5,minmax(0,1fr))}.word-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}.word-tile{grid-template-columns:48px minmax(0,1fr) 8px;gap:8px}.word-tile>img{width:48px;height:36px}
 .full-word-card{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start}.full-word-card>.recall-cover{grid-column:1/-1}.full-word-card>#word-stage{position:sticky;top:24px}.word-copy{padding:26px}.word-actions{max-width:600px;margin:auto}
 .practice-types{display:grid;grid-template-columns:1fr 1fr;column-gap:40px}.practice-due{max-width:600px}.question-area,.session-book,.session-meter,.session-phase{max-width:720px;margin-left:auto;margin-right:auto}.screen-bar{max-width:100%;margin:auto}.session-meter{width:100%}
 #app[data-route="/me"] main{display:grid;grid-template-columns:1fr 1fr;gap:0 30px;align-items:start}#app[data-route="/me"] main>.page-heading,#app[data-route="/me"] main>.stats-grid{grid-column:1/-1}.stats-grid{grid-template-columns:repeat(4,1fr)}#app[data-route="/me"] .xp-count{grid-column:1/-1}.forecast{grid-column:1}.activity{grid-column:2}
 .topic-grid{grid-template-columns:repeat(4,minmax(0,1fr))}.star-grid{grid-template-columns:repeat(20,minmax(0,1fr))}
 .single-onboarding{max-width:520px;margin:auto}.single-onboarding .onboard-art{flex:none;height:210px}.setup-sheet{padding:24px}
}
.route-pick,.level-pick{grid-column:1/-1;border:0;padding:0;margin:0;text-align:left}.route-pick legend,.level-pick legend{font-size:12px;color:var(--muted);margin-bottom:8px}.route-pick{display:grid;grid-template-columns:1fr 1fr;gap:10px}.route-card{position:relative;display:block;border:1px solid #d8cdb4;border-radius:5px;padding:13px 14px;background:var(--canvas);cursor:pointer}.route-card input{position:absolute;opacity:0}.route-card strong{display:block;font-size:15px;margin-bottom:4px}.route-card small{display:block;font-size:11px;line-height:1.6;color:var(--muted)}.route-card:has(input:checked){border-color:var(--green);box-shadow:inset 0 0 0 1px var(--green);background:var(--paper)}.route-card:has(input:focus-visible){outline:2px solid #9c7242;outline-offset:3px}
.level-chips{display:grid;grid-template-columns:repeat(6,1fr);gap:6px}.level-chip{position:relative;display:grid;gap:3px;justify-items:center;padding:10px 0;border:1px solid #d9cfb9;border-radius:35px;background:var(--paper);cursor:pointer}.level-chip input{position:absolute;opacity:0}.level-chip strong{font:19px Georgia,serif}.level-chip small{font-size:9px;color:var(--muted)}.level-chip:has(input:checked){background:var(--green);border-color:var(--green);color:var(--paper)}.level-chip:has(input:checked) small{color:#e6e4d2}.level-chip:has(input:focus-visible){outline:2px solid #9c7242;outline-offset:3px}.level-help{margin:8px 0 0}
.route-line{font-size:13px;color:var(--muted);margin:4px 0 12px}.later-tag{align-self:flex-start;font-size:10px;color:#8a7549;border:1px dashed #c9b27b;border-radius:10px;padding:1px 7px;margin-top:6px}.more-sections{margin:10px 2px 18px}.later-section summary{color:#8a7549}
@media(max-width:360px){.route-pick{grid-template-columns:1fr}.level-chips{gap:3px}}
.hero h2,.route-line{padding-right:96px}@media(min-width:700px){.hero h2,.route-line{padding-right:150px}}
.reader-cover{text-align:center}.reader-cover .popbook{margin-bottom:6px}.reader-cover h1{margin:6px 0 2px}.reader-meta{font-size:12px;color:var(--muted)}.reader-cover-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin:14px 0}.reader-progress{margin:8px auto 0;max-width:240px}
.reader-bar{position:sticky;top:0;z-index:5;display:flex;flex-wrap:wrap;gap:10px;align-items:center;padding:12px 14px}.reader-modes,.reader-transport{display:flex;gap:6px;align-items:center}.reader-modes button{min-height:38px;padding:6px 14px}.reader-bar label{font-size:11px;display:flex;gap:6px;align-items:center}.reader-bar select{font-size:12px;padding:5px;min-height:34px}.reader-transport .round-button{width:38px;height:38px;padding:8px}.reader-transport [data-action="read-next"] svg{transform:none}
.reader-text{font:21px/1.75 var(--english-font,Cormorant),Georgia,serif;padding:8px 2px 60px}.read-passage{margin:0 0 22px}.read-passage>p{margin:0}.read-sentence{border-radius:3px;transition:background .25s;cursor:pointer}.read-sentence.current{background:#e9dcae80;box-shadow:0 0 0 3px #e9dcae80}.read-sentence .speaking{text-decoration:underline 2px #8a6c34;text-underline-offset:4px}.reader-text .reading-word{font:inherit;color:inherit;background:none;border:0;padding:0;border-bottom:1px solid #8e9b79;cursor:pointer}.reader-text .reading-word.unlearned{border-bottom:1px dashed #b38f3d;background:#d9ba6a26}.read-zh{font:14px/1.8 system-ui,sans-serif;color:var(--muted);margin:8px 0 0!important}
.book-mode{font-size:22px;line-height:1.85}.book-mode .read-passage:first-child>p:first-child::first-letter{float:left;font-size:4.2em;line-height:.8;padding:6px 8px 0 0;color:#6d5a33}.book-mode .read-sentence.current{background:none;box-shadow:none;border-bottom:1px solid #c9b27b}
#word-sheet .word-sheet{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom));transform:translateX(-50%);width:min(560px,calc(100% - 24px));z-index:40;box-shadow:0 10px 40px #403f3130}.word-sheet h2{font:30px Cormorant,Georgia,serif;margin:0}.sheet-actions{display:flex;flex-wrap:wrap;gap:8px}.reader-link{margin-top:6px}
html[data-theme="dark"] .m2 .read-sentence.current{background:#3b4f5e;box-shadow:0 0 0 3px #3b4f5e}html[data-theme="dark"] .m2 .reader-text .reading-word.unlearned{background:#5a4b2a55;border-bottom-color:#d3b47f}html[data-theme="dark"] .m2 .book-mode .read-passage:first-child>p:first-child::first-letter{color:var(--gold)}
.reader-bar label{white-space:nowrap}.reader-bar .switch-label{min-height:34px}
@media(min-width:1100px){.reader-text{max-width:720px;margin:0 auto;font-size:23px}.reader-bar{max-width:760px;margin-left:auto;margin-right:auto}.reader-cover{max-width:760px;margin-left:auto;margin-right:auto}}
.pc-reading-word{font:34px/1 Cormorant,Georgia,serif;text-align:center;color:#3f3826;letter-spacing:.01em}
.chapter-tabs{display:flex;flex-wrap:wrap;gap:6px;margin:4px 0 14px}.chapter-tabs a{min-width:38px;text-align:center;padding:6px 8px;border:1px solid #d9d2bd;border-radius:4px;font-size:12px;color:var(--muted);text-decoration:none}.chapter-tabs a.active{background:var(--ink,#3f3826);color:var(--paper,#fbf6e9);border-color:transparent}
.collection-shelf span.mastered{outline:2px solid #c99a4a}