:root{color-scheme:light;--page:#f8f8f5;--paper:#fffdf8;--surface:#fff;--sidebar:#f5f6f2;--ink:#263b34;--text:#30433e;--muted:#86918b;--line:#e9ece7;--mint:#42af91;--mint-dark:#268769;--soft-mint:#eaf7ef;--shadow:0 14px 48px rgba(34,60,47,.07);--radius:19px}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;color:var(--text);background:var(--page)}button,input,textarea,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.4;cursor:not-allowed}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid #50bca0;outline-offset:2px}a{color:var(--mint-dark)}.hidden{display:none!important}.visually-hidden{position:absolute;width:1px;height:1px;clip:rect(0,0,0,0);overflow:hidden}.muted{color:var(--muted)}h1,h2,h3,h4,p{margin-top:0}.button{border:1px solid #e3ebe6;background:#fff;border-radius:13px;min-height:43px;padding:10px 16px;color:var(--ink);font-weight:650;display:inline-flex;align-items:center;justify-content:center;gap:8px}.button:hover{border-color:var(--mint);transform:translateY(-1px)}.button.primary{background:var(--mint-dark);color:#fff;border-color:var(--mint-dark)}.button.primary:hover{background:#1c755a}.button.ghost{background:transparent}.button.danger{color:#a33d47;border-color:#f4c8cc}.button.mini{font-size:12px;min-height:32px;padding:6px 10px;border-radius:9px}.icon-button,.tiny-button{border:0;background:transparent;color:var(--ink);font-size:23px;padding:6px 11px;border-radius:10px}.tiny-button{font-size:25px;padding:0 8px}.icon-button:hover,.tiny-button:hover{background:#eff3ee}.pill{display:inline-block;background:#e7f5e9;color:#41846d;padding:7px 15px;border-radius:30px;font-size:13px;font-weight:600}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:22px 0 15px}.section-heading h2{font-size:20px;color:var(--ink);margin:0}.section-heading p{margin:5px 0 0;color:var(--muted);font-size:13px}.eyebrow{color:var(--mint-dark);font-size:12px;letter-spacing:1px;font-weight:800}.soft-button{border:0;background:var(--soft-mint);color:var(--mint-dark);padding:10px 13px;border-radius:11px;font-weight:700;font-size:13px}.empty{padding:45px 20px;text-align:center;color:var(--muted);background:#fff;border:1px dashed var(--line);border-radius:var(--radius)}.empty-icon{font-size:45px;margin-bottom:15px}.empty h3{color:var(--ink)}
/* auth */
.auth-screen{min-height:100vh;display:grid;grid-template-columns:minmax(460px,52%) 1fr}.auth-story{display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden;padding:40px 62px;background:linear-gradient(145deg,#e5f5ed,#f5f6e9 62%,#f7e9dc)}.auth-story:before{content:'';position:absolute;border:70px solid rgba(255,255,255,.24);width:460px;height:460px;border-radius:50%;right:-220px;top:10%}.auth-brand,.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:850;font-size:27px;letter-spacing:.5px;position:relative}.auth-brand small,.brand small{display:block;letter-spacing:1px;color:#8ba99b;font-size:9px;margin-top:2px}.brand-mark{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:14px;background:var(--mint-dark);color:white;font-weight:800;font-size:22px;box-shadow:0 8px 18px #3da0833b}.story-content{position:relative;margin:70px 0}.story-content h1{font-size:clamp(38px,4vw,61px);line-height:1.4;letter-spacing:-2px;color:#305544;margin:18px 0}.story-content h1 span{color:#37a784}.story-content p{font-size:15px;line-height:2;max-width:470px;color:#739186}.story-book{height:220px;margin-top:45px;position:relative}.story-book-cover{position:absolute;left:80px;top:8px;transform:rotate(-13deg);height:207px;width:150px;background:linear-gradient(135deg,#a5dacc,#6bba9f);border-radius:6px 16px 16px 5px;box-shadow:16px 17px 28px #34594830;color:#fff;display:flex;align-items:center;justify-content:center;text-align:center;font-family:serif;font-size:46px;letter-spacing:8px;line-height:1.3}.story-star{position:absolute;font-size:50px;left:20px;color:#f6c77e;top:60px}.story-note{position:absolute;left:255px;top:55px;background:#fff9f0;padding:22px;line-height:1.8;transform:rotate(6deg);box-shadow:var(--shadow);font-size:15px;color:#8d796d;border-radius:7px}.story-note b{color:#407763}.story-bottom{position:relative;color:#91a79a;font-size:12px}.auth-form-area{display:grid;place-items:center;padding:40px}.auth-panel{width:min(370px,100%)}.auth-panel h2{font-size:34px;letter-spacing:-1px;color:var(--ink);margin-bottom:8px}.auth-panel>.muted{margin-bottom:35px}.auth-tabs{display:flex;border-bottom:1px solid var(--line);margin-bottom:28px;gap:20px}.auth-tabs button{border:0;background:transparent;padding:10px 6px 13px;color:var(--muted);font-weight:700}.auth-tabs .active{color:var(--mint-dark);border-bottom:3px solid var(--mint)}.auth-panel label{display:block;font-weight:650;color:#53665f;font-size:13px;margin:0 0 18px}.auth-panel label input{display:block;margin-top:9px;width:100%;padding:15px;background:white;border:1px solid #e3e7e4;border-radius:12px;color:var(--text)}.auth-submit{width:100%;margin-top:8px;justify-content:space-between;font-size:15px;padding:15px}.auth-hint{font-size:11px;color:var(--muted);line-height:1.8;margin-top:25px}.mobile-logo{display:none}
/* shell */
.app-shell{display:flex;height:100vh;min-height:500px}.sidebar{width:252px;flex:none;background:var(--sidebar);display:flex;flex-direction:column;padding:29px 18px 20px;border-right:1px solid var(--line)}.sidebar .brand{margin:0 13px 44px}.sidebar-label{font-size:11px;color:#a0aea5;margin:0 15px 15px}.side-nav{display:grid;gap:7px}.side-nav-item{border:0;background:transparent;display:flex;align-items:center;gap:13px;border-radius:13px;padding:13px 16px;text-align:left;color:#7b8f83;font-weight:650}.side-nav-item.active{background:white;color:var(--mint-dark);box-shadow:0 3px 12px #233a2a0d}.side-nav-item:hover{background:#fff}.nav-emoji{display:inline-flex;justify-content:center;align-items:center;width:19px;font-size:22px}.sidebar-bottom{margin-top:auto}.sidebar-tip{background:#e8f2e9;color:#799c8a;padding:17px;border-radius:15px;margin-bottom:16px;font-size:12px}.sidebar-tip span{font-weight:750;color:#4a947b}.sidebar-tip p{line-height:1.8;margin:7px 0 0}.user-card{border:1px solid var(--line);background:white;border-radius:14px;display:flex;align-items:center;gap:10px;padding:11px;width:100%;color:var(--ink);text-align:left}.avatar,.header-avatar{display:grid;place-items:center;background:#e2efe5;color:#54917d;border-radius:50%;width:39px;height:39px;font-weight:800}.user-card-text{display:grid;gap:4px;flex:1}.user-card-text small{font-size:11px;color:var(--muted)}.main-area{min-width:0;flex:1;display:flex;flex-direction:column;overflow:hidden}.app-header{height:75px;display:flex;align-items:center;justify-content:space-between;padding:0 max(24px,calc((100vw - 1430px)/2));background:#ffffffb8;border-bottom:1px solid var(--line)}.header-caption{font-size:13px;color:#a2b0a5}.header-actions{display:flex;align-items:center;gap:16px}.header-avatar{width:36px;height:36px}.page-content{padding:32px max(24px,calc((100vw - 1430px)/2));overflow:auto;flex:1}.mobile-nav{display:none}.page-title{font-size:30px;letter-spacing:-.6px;color:var(--ink);margin:0 0 9px}.page-lead{font-size:14px;color:var(--muted);margin:0 0 28px}.welcome-hero{border-radius:24px;background:linear-gradient(115deg,#e5f5eb,#ecf5f0 65%,#f9eee2);padding:32px 38px;display:flex;gap:24px;align-items:center;justify-content:space-between;min-height:225px;position:relative;overflow:hidden}.welcome-hero h1{font-size:28px;color:#32634f;margin:0 0 12px}.welcome-hero p{color:#7e9c8c;font-size:14px;line-height:1.8;max-width:490px}.welcome-hero .hero-graphic{font-size:110px;filter:drop-shadow(13px 20px 11px #40583b24);margin-right:42px;transform:rotate(-9deg)}.hero-actions{display:flex;gap:9px;flex-wrap:wrap}.hero-actions .button{background:#fff}.hero-actions .button.primary{background:var(--mint-dark)}.quick-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.quick-card{border:1px solid var(--line);border-radius:17px;background:#fff;padding:22px;display:flex;align-items:center;gap:15px;min-width:0}.quick-icon{display:grid;place-items:center;border-radius:13px;background:#f0f8f0;width:49px;height:49px;font-size:26px}.quick-card b{display:block;color:var(--ink);font-size:16px}.quick-card small{color:var(--muted);font-size:12px}.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:20px}.book-card{cursor:pointer;text-align:left;border:1px solid var(--line);border-radius:16px;background:#fff;padding:12px;min-width:0;transition:transform .15s,box-shadow .15s;color:inherit}.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}.book-cover{height:183px;max-height:25vw;min-height:145px;display:flex;align-items:center;justify-content:center;position:relative;border-radius:10px 16px 16px 10px;color:#fff;text-align:center;box-shadow:inset 9px 0 11px #202c2715;overflow:hidden;padding:25px 14px}.book-cover:before{position:absolute;content:'✦';font-size:55px;opacity:.13;top:2px;right:-5px}.book-cover b{font-size:19px;font-family:Georgia,'Songti SC',serif;font-weight:700;word-break:break-word;line-height:1.6;max-height:130px;overflow:hidden}.book-cover.epub{background:linear-gradient(120deg,#6fb6a5,#317d6e)}.book-cover.pdf{background:linear-gradient(120deg,#d8a18d,#a75f65)}.book-cover.txt{background:linear-gradient(120deg,#819fce,#647ba8)}.book-card h3{font-size:14px;line-height:1.5;margin:11px 1px 2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.book-meta{font-size:12px;color:var(--muted);margin:2px 1px 0}.form-row{display:flex;gap:12px;flex-wrap:wrap;align-items:center}.search-field{border:1px solid var(--line);background:#fff;border-radius:12px;padding:11px 14px;width:min(420px,100%);color:var(--ink)}.toolbar-line{display:flex;align-items:center;justify-content:space-between;gap:15px;margin-bottom:20px}.notes-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:15px}.note-card{border:1px solid var(--line);border-radius:16px;background:white;padding:18px}.note-quote{border-left:4px solid #edc76c;background:#fff9e8;margin:0 0 12px;padding:12px 14px;line-height:1.7;white-space:pre-wrap;max-height:160px;overflow:auto}.note-quote.green{border-color:#75c6a6;background:#effbf4}.note-quote.pink{border-color:#efb3ba;background:#fff2f3}.note-quote.blue{border-color:#9abbef;background:#f1f7ff}.note-card p{color:#62736b;line-height:1.6}.note-card-head{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:12px;margin-bottom:14px}.note-card-actions{display:flex;gap:8px;flex-wrap:wrap}.settings-panel{background:white;border:1px solid var(--line);border-radius:18px;padding:24px;margin-bottom:17px}.settings-panel h3{margin:0 0 15px}.settings-panel p{color:var(--muted);font-size:13px;line-height:1.8}.chips{display:flex;gap:9px;flex-wrap:wrap}.chip{border:1px solid #e5ece7;border-radius:25px;padding:8px 15px;background:white;color:#63786c;font-size:13px}.chip.active{background:#dff5e8;border-color:#8bd4ad;color:#268767}.theme-picker{display:flex;gap:12px;flex-wrap:wrap}.theme-tile{border:2px solid transparent;background:#f6f8f4;border-radius:12px;padding:16px 24px}.theme-tile.active{border-color:var(--mint)}.theme-tile[data-theme='dark']{background:#374341;color:#fff}.theme-tile[data-theme='paper']{background:#fcf3dc}.theme-tile[data-theme='mint']{background:#e7f8ec}.small-note{font-size:12px!important}
/* reader */
.reader{position:fixed;inset:0;z-index:20;background:#f8f7f2;display:flex;flex-direction:column;color:#3c463e}.reader-toolbar{display:flex;align-items:center;justify-content:space-between;padding:7px 25px;gap:15px;background:#fffffff5;border-bottom:1px solid #e7e8e1;min-height:63px}.reader-left{display:flex;align-items:center;gap:10px;min-width:0}.reader-title{display:grid;gap:2px;min-width:0}.reader-title b{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:14px}.reader-title small{color:#a1a69c;font-size:11px}.reader-actions{display:flex;align-items:center;gap:5px;flex-wrap:wrap}.toolbar-button{border:0;background:transparent;padding:9px 12px;border-radius:9px;font-weight:700;color:#79877c}.toolbar-button.accent{background:#e6f5e8;color:#328369}.toolbar-button:hover{background:#edf3ec}.reader-body{display:flex;min-height:0;flex:1;overflow:hidden;position:relative}.reader-toc{flex:none;width:255px;overflow:auto;background:#fff;border-right:1px solid #e9ece5;padding:16px 12px;box-shadow:2px 3px 22px #00000005}.reader-toc-head{display:flex;align-items:center;justify-content:space-between;padding:6px 12px 18px;border-bottom:1px solid var(--line)}.toc-item{display:block;border:0;text-align:left;background:transparent;width:100%;border-radius:10px;padding:11px;font-size:13px;color:#78857a}.toc-item.active{background:#e8f6ec;color:#2d896c;font-weight:750}.reader-scroll{flex:1;overflow:auto;scroll-behavior:smooth;padding:20px 18px 65px}.paper{background:var(--paper);max-width:780px;margin:0 auto;padding:52px clamp(26px,5vw,78px) 70px;min-height:75vh;box-shadow:0 10px 35px rgba(74,71,50,.04);border:1px solid #eeeae0;border-radius:5px;transition:background .2s}.chapter-tag{letter-spacing:4px;font-size:11px;color:#b7b5a5}.paper h1{font-family:Georgia,'Songti SC',serif;color:#425147;margin:24px 0 32px;line-height:1.5;font-size:29px}.chapter-content{white-space:pre-wrap;overflow-wrap:anywhere;font-family:Georgia,'Songti SC','SimSun',serif;font-size:var(--reader-font,19px);line-height:2.15;letter-spacing:.55px;color:#464940;user-select:text}.chapter-content mark{color:inherit;background:#ffe6a5;border-radius:2px;cursor:pointer}.chapter-content mark.green{background:#c1efcd}.chapter-content mark.pink{background:#f7c6cf}.chapter-content mark.blue{background:#c5ddfa}.chapter-end{text-align:center;margin-top:70px;color:#c2c7ad}.reader-insights{width:345px;flex:none;background:#fff;border-left:1px solid #e9ece5;display:flex;flex-direction:column;min-height:0}.insight-tabs{display:flex;padding:10px 9px;gap:3px;border-bottom:1px solid var(--line)}.insight-tabs button{flex:1;border:0;background:transparent;padding:10px 3px;border-radius:9px;font-size:12px;color:#87948a}.insight-tabs button.active{background:#e8f5eb;color:#308968;font-weight:750}.insight-content{padding:19px;overflow:auto;flex:1}.insight-content textarea{min-height:100px;width:100%;resize:vertical;border:1px solid var(--line);padding:12px;border-radius:12px;background:#fcfdfb}.insight-content h3{font-size:17px;color:var(--ink)}.insight-content h4{margin-bottom:8px}.ai-box{background:#f1f7f3;padding:13px;line-height:1.8;color:#526a5d;border-radius:12px;white-space:pre-wrap;font-size:13px;max-height:48vh;overflow:auto}.source-item{border:1px solid var(--line);padding:11px;border-radius:10px;font-size:12px;color:#63746a;display:block;margin:7px 0;width:100%;text-align:left;background:#fff}.source-item:hover{border-color:#67b895}.source-item b{display:block;color:#387a5b}.source-item small{line-height:1.7}.mini-insight-note{background:#fff8e6;padding:11px;border-radius:10px;margin:10px 0;white-space:pre-wrap;font-size:12px;line-height:1.6}.outline-node{display:flex;gap:9px;align-items:flex-start;padding:9px 10px 9px 17px;border-left:2px solid #8ecba9;margin-left:5px;cursor:pointer;font-size:13px}.outline-node:hover{background:#f2f8f3}.outline-node.root{border:0;font-weight:750;font-size:15px;padding-left:0}.outline-node .node-dot{color:#4bab8a}.reader-chapter-nav{display:flex;justify-content:space-between;align-items:center;margin:18px auto;max-width:780px;gap:9px;color:#8c958a;font-size:12px}.reader-footer{height:34px;border-top:1px solid #e7e8e0;background:#fff;display:flex;align-items:center;justify-content:space-between;padding:0 20px;color:#9caa9b;font-size:11px}.reader-footer>div{display:flex;align-items:center;gap:10px}.mini-progress{height:4px;width:110px;border-radius:50px;background:#dbe8dc;overflow:hidden}.mini-progress i{display:block;height:100%;width:0;background:#61b993;transition:width .3s}.selection-bar{position:fixed;z-index:24;bottom:65px;left:50%;transform:translateX(-50%);padding:10px;box-shadow:0 16px 44px #25433632;border:1px solid var(--line);background:#fff;border-radius:15px;display:flex;gap:8px;align-items:center;max-width:90vw}.selection-bar span{white-space:nowrap;max-width:180px;text-overflow:ellipsis;overflow:hidden;font-size:12px;color:#84978b}.reader.is-dark{--paper:#29322f;background:#1e2623;color:#e0e7df}.reader.is-dark .paper{border-color:#33403b}.reader.is-dark .chapter-content,.reader.is-dark .paper h1{color:#e7e7df}.reader.is-dark .reader-scroll{background:#1e2623}.reader.is-dark .reader-toolbar,.reader.is-dark .reader-footer,.reader.is-dark .reader-toc,.reader.is-dark .reader-insights{background:#2d3732;color:#dde6db;border-color:#3d4841}.reader.is-dark .toolbar-button,.reader.is-dark .icon-button{color:#e8efe8}.reader.is-dark .chapter-content mark{color:#2a3027}.reader.is-mint{--paper:#eef7ed;background:#e1f0e4}.reader.is-light{--paper:#fff;background:#f5f6f8}
/* dialog & toast */
.dialog-backdrop{position:fixed;inset:0;background:#10241a77;z-index:40;display:grid;place-items:center;padding:15px}.dialog{width:min(470px,100%);border-radius:20px;background:white;padding:24px;box-shadow:0 22px 60px #12291966}.dialog-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.dialog-header h3{margin:0;color:var(--ink)}.dialog textarea,.dialog input{width:100%;border:1px solid var(--line);border-radius:12px;padding:12px;min-height:50px;margin:7px 0 14px}.dialog textarea{min-height:110px;resize:vertical}.dialog label{display:block;font-size:13px;color:#607368}.dialog-actions{display:flex;gap:10px;justify-content:flex-end}.dialog .quote-preview{padding:12px 15px;border-left:4px solid #f0cc74;background:#fff9e8;border-radius:5px;margin-bottom:15px;max-height:125px;overflow:auto;white-space:pre-wrap}.color-options{display:flex;gap:9px;margin-bottom:17px}.color-options label{display:flex;gap:4px;align-items:center}.color-options input{width:auto;min-height:0;margin:0}#toast{position:fixed;z-index:100;bottom:26px;left:50%;transform:translateX(-50%);background:#2e4c3d;color:#fff;padding:12px 23px;box-shadow:0 12px 32px #0a372038;border-radius:15px;font-size:13px;max-width:90vw;display:none}#toast.visible{display:block}
@media(max-width:1150px){.sidebar{width:215px}.reader-toc{width:205px}.reader-insights{width:300px}.auth-story{padding:38px}.story-note{left:210px}.story-book-cover{left:45px}}
@media(max-width:850px){.auth-screen{grid-template-columns:1fr}.auth-story{display:none}.auth-panel .mobile-logo{display:flex;align-items:center;gap:10px;margin-bottom:32px;font-size:20px}.sidebar{display:none}.app-header .mobile-logo{display:flex;align-items:center;gap:8px}.app-header .brand-mark,.mobile-logo .brand-mark{width:34px;height:34px;font-size:18px}.header-caption{display:none}.app-header{padding:10px 19px;height:60px}.page-content{padding:20px 16px 100px}.mobile-nav{display:flex;justify-content:space-around;flex:none;height:65px;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom)}.mobile-nav button{display:grid;align-content:center;justify-items:center;gap:2px;font-size:10px;background:transparent;border:0;color:#a2aea4;min-width:65px}.mobile-nav button span{font-size:22px}.mobile-nav button.active{color:#26946c;font-weight:700}.welcome-hero{padding:24px;min-height:190px}.welcome-hero h1{font-size:24px}.welcome-hero .hero-graphic{font-size:75px;margin:0}.reader-insights{position:absolute;top:0;right:0;bottom:0;width:min(390px,94vw);z-index:3;box-shadow:-10px 0 28px #102d1426}.reader-toc{position:absolute;top:0;left:0;bottom:0;width:min(300px,85vw);z-index:3;box-shadow:10px 0 30px #102d1426}.reader-toc.closed{display:none}.reader-toolbar{padding:8px 11px;gap:5px}.reader-title b{max-width:120px}.reader-actions{gap:0}.toolbar-button{padding:8px 7px;font-size:13px}.toolbar-button span{display:none}.reader-scroll{padding:0 0 50px}.paper{border-radius:0;padding:34px 22px 55px;box-shadow:none;min-height:calc(100vh - 120px)}.paper h1{font-size:23px}.reader-chapter-nav{padding:0 15px}.quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:560px){.page-title{font-size:25px}.welcome-hero .hero-graphic{display:none}.welcome-hero h1{font-size:25px}.welcome-hero{min-height:195px}.quick-grid{grid-template-columns:1fr}.books-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.book-card{padding:9px}.book-cover{height:160px}.auth-form-area{padding:26px}.reader-title small{max-width:130px;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.reader-toolbar .toolbar-button#smallerFont,.reader-toolbar .toolbar-button#largerFont{display:none}.selection-bar span{max-width:80px}.section-heading h2{font-size:18px}.toolbar-line{align-items:flex-start;flex-direction:column}}

/* V0.2.2 intentional, per-book opt-in offline text download */
.book-tile{min-width:0;display:flex;flex-direction:column;gap:5px}
.book-tile .book-card{width:100%;flex:1}
.book-offline{border:1px solid #d6e6da;border-radius:10px;background:#e9f7ef;color:#387a5d;padding:8px 5px;cursor:pointer;font-size:12px;font-weight:650}
.book-offline:hover{background:#d8f0e1}

/* V0.4.4: TXT full-book search without injecting excerpts as HTML. */
.txt-search-results{max-height:48vh;overflow-y:auto;display:flex;flex-direction:column;gap:7px;margin-top:14px}
.txt-search-result{text-align:left;border:1px solid rgba(100,116,139,.16);background:var(--card-bg,#fff);border-radius:12px;padding:12px;cursor:pointer;color:inherit}
.txt-search-result:hover,.txt-search-result:focus-visible{outline:2px solid #8fcabb}
.txt-search-result b{display:block;font-size:13px;margin-bottom:6px}
.txt-search-result span{display:block;white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.7}

/* V0.5.0 · responsive smart shelf */
.shelf-status{font-size:12px;font-weight:700;color:#38836b;margin:8px 0 5px}
.shelf-tags{display:flex;flex-wrap:wrap;gap:4px;min-height:20px;margin:7px 0 2px}
.shelf-tag{font-size:10px;color:#638675;border-radius:15px;background:#ecf7ef;padding:3px 7px;max-width:100%;overflow:hidden;text-overflow:ellipsis}
.shelf-actions{display:flex;gap:6px;align-items:center}
.shelf-actions button{border:1px solid #dcece1;background:#fff;color:#4e8770;border-radius:10px;min-height:32px;font-size:12px;padding:5px 8px}
.shelf-actions button:first-child{font-size:20px;flex:0 0 42px;color:#d39e51}
.shelf-actions button:last-child{flex:1}
.shelf-filters{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 22px}
.shelf-filters button{border:1px solid #e2eee7;border-radius:999px;padding:9px 13px;color:#5a8271;background:white;font-size:12px}
.shelf-filters button.active{background:#def2e7;border-color:#92cbb1;color:#247856;font-weight:750}
.dialog select{display:block;width:100%;min-height:46px;margin:8px 0 17px;padding:10px;border:1px solid var(--line);border-radius:12px;background:#fff;color:#30433e}
.dialog .shelf-check{display:flex;align-items:center;gap:10px;margin:6px 0 14px}
.dialog .shelf-check input{width:20px;height:20px;min-height:0;margin:0}
@media(max-width:560px){.shelf-actions button:last-child{font-size:11px}.shelf-filters button{padding:7px 10px}}

/* V0.5.3 · honest continue-reading cards (saved positions only). */
.recent-reading-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(225px,100%),1fr));gap:12px;margin:8px 0 30px}
.recent-reading-item{appearance:none;text-align:left;min-width:0;border:1px solid #d6e9db;border-radius:17px;cursor:pointer;background:#fffdf8;padding:16px;box-shadow:0 4px 18px #28563d0d;display:flex;flex-direction:column;gap:8px;color:#42574c}
.recent-reading-item:hover,.recent-reading-item:focus-visible{outline:2px solid #77c59e;outline-offset:2px}
.recent-reading-item strong{font-size:15px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#2d5743}
.recent-reading-item span{font-size:12px;overflow-wrap:anywhere;line-height:1.5}
.recent-reading-item small{font-size:11px;color:#7b9487}
.recent-reading-item em{font-size:10px;color:#9a783f;font-style:normal}

/* V0.6.0: only a real 409 conflict exposes this focused recovery action. */
#readerConflictAction{background:#fff4d6;color:#856000;border:1px solid #eed39a;white-space:nowrap}
#readerConflictAction:hover{background:#ffe7ad}
@media(max-width:850px){#readerConflictAction{font-size:12px;padding:7px 6px}}

/* V0.6 excerpt-review center; mobile buttons remain usable with 5 tabs. */
.review-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:22px}
.review-stats>div{background:#fff;border:1px solid var(--line);border-radius:17px;padding:18px;display:grid;gap:7px}
.review-stats strong{font-size:26px;color:#2b856c}.review-stats span{font-size:12px;color:var(--muted)}
.review-tip{font-size:12px;line-height:1.7;max-width:900px;margin:4px 0 22px}
.review-stack{display:grid;gap:14px;max-width:860px}.review-card{background:#fff;border:1px solid var(--line);border-radius:19px;padding:22px;min-width:0}
.review-meta{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);flex-wrap:wrap}
.review-meta b{font-size:14px;color:var(--ink)}.review-card blockquote{margin:18px 0 12px;padding:18px;border-radius:12px;border-left:4px solid #91ccb0;background:#f4faf4;color:#325a4b;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.8}
.review-annotation{font-size:13px;color:#5e7166;white-space:pre-wrap;overflow-wrap:anywhere}
.review-location{color:var(--muted);font-size:12px}.review-actions,.review-grades,.review-pagination{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.review-actions{justify-content:space-between;margin-top:17px}.review-pagination{justify-content:center;margin:22px 0}.review-grades .button{min-height:36px}
@media(max-width:850px){.mobile-nav button{flex:1;min-width:0;padding:1px 2px}.mobile-nav button span{font-size:20px}}
@media(max-width:560px){.review-stats{gap:6px}.review-stats>div{padding:12px}.review-stats strong{font-size:21px}.review-stats span{font-size:10px}.review-card{padding:16px}.review-grades{width:100%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr))}.review-grades .button{padding:8px 2px;font-size:12px}}

/* V0.6.4: compact daily plan that wraps cleanly on phone widths. */
.review-plan {background:var(--surface,#fff);border:1px solid rgba(70,130,105,.18);
  border-radius:18px;padding:16px;margin:13px 0 18px;}
.review-plan-head {display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;}
.review-plan-head strong {font-size:16px;}
.review-plan-head .muted {font-size:12px;margin:6px 0 0;}
.review-plan-edit {display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.review-plan-edit label {font-size:12px;}
.review-plan-edit select {max-width:110px;padding:7px;border:1px solid #d6e0d8;border-radius:9px;}
.review-plan-edit button {min-height:36px;}
.review-plan-track {height:7px;border-radius:100px;background:#e8eee8;overflow:hidden;margin:14px 0;}
.review-plan-track span {display:block;height:100%;border-radius:inherit;background:#4b9b78;}
.review-week {display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:5px;}
.review-week span {min-width:0;padding:8px 1px;background:#f5f8f3;border-radius:10px;text-align:center;}
.review-week b,.review-week small {display:block;font-size:11px;white-space:nowrap;}
.review-week small {color:#53675a;margin-top:4px;}
@media(max-width:500px){.review-week{gap:3px}.review-week b,.review-week small{font-size:9px}}

/* V0.6.4: confirmed-only history ledger with mobile-first wrapping. */
.review-history{margin:22px 0;padding:18px;border:1px solid var(--line);
  border-radius:18px;background:var(--surface,#fff);max-width:860px}
.review-history h2{font-size:17px;margin:0 0 5px}
.review-history-items{display:grid;gap:7px;margin-top:12px}
.review-history-item{display:flex;justify-content:space-between;gap:12px;
  align-items:center;padding:12px;border:1px solid var(--line);border-radius:12px;
  min-width:0}
.review-history-item>div{min-width:0;overflow-wrap:anywhere}
.review-history-item b{font-size:13px}
.review-history-item p{font-size:12px;margin:5px 0;color:var(--ink);white-space:pre-wrap}
.review-history-item small{font-size:11px;color:var(--muted)}
.review-history-item>strong{flex-shrink:0;color:#32876d;font-size:12px}
@media(max-width:540px){.review-history{padding:12px}.review-history-item{padding:10px}}

/* V0.7.0: unified private knowledge search, responsive and keyboard-friendly. */
.knowledge-controls{display:flex;gap:10px;align-items:end;flex-wrap:wrap;background:#fff;border:1px solid var(--line);border-radius:18px;padding:17px;margin:14px 0}
.knowledge-field{display:flex;flex-direction:column;gap:7px;font-size:12px;color:#617e6e;font-weight:700;flex:1 1 155px;min-width:0}
.knowledge-field:first-child{flex:2 1 250px}
.knowledge-field input,.knowledge-field select{min-width:0;width:100%;border:1px solid #dce8df;border-radius:11px;background:#fcfefa;padding:11px;color:var(--ink);min-height:43px}
.knowledge-notice{font-size:12px;color:#778e7e;line-height:1.7;margin:8px 0 18px}
.knowledge-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(min(355px,100%),1fr));gap:12px}
.knowledge-card{min-width:0;background:#fff;border:1px solid var(--line);border-radius:17px;padding:17px;box-shadow:0 4px 20px #163a200a}
.knowledge-meta,.knowledge-foot{display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.knowledge-meta b{font-size:14px;color:#275c44;overflow-wrap:anywhere}
.knowledge-meta span,.knowledge-foot small{font-size:11px;color:#82968a}
.knowledge-card blockquote{margin:13px 0;padding:12px 14px;border-left:4px solid #9dd6b3;background:#f5faf4;color:#375d4a;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7;font-size:13px}
.knowledge-card .knowledge-body{color:#526d5b;font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.7}
@media(max-width:560px){.knowledge-controls{padding:12px;gap:8px}.knowledge-field:first-child{flex-basis:100%}.knowledge-controls>.button{flex:1}}

/* V0.7.2: transient, local-only feedback for a live verified excerpt. */
::highlight(zhiyue-knowledge-focus){background:#ffe19a;color:#342407;text-decoration:underline;text-decoration-color:#b46e19}
/* V0.8.0: light, touch-friendly collection organization. */
.knowledge-card .collection-add-select{min-height:36px;max-width:175px;padding:7px 8px;border:1px solid #cce3d5;border-radius:10px;background:#f6fff9;color:#335b49;font-size:12px}
.knowledge-foot{flex-wrap:wrap;gap:8px}
@media(max-width:560px){.knowledge-card .collection-add-select{max-width:100%;flex:1 1 125px}}

/* V0.8.2: private description is displayed only on the live knowledge view. */
.knowledge-collection-description{flex-basis:100%;margin:0;padding:8px 11px;background:#f1faf5;border-radius:10px;color:#466957;white-space:pre-wrap;overflow-wrap:anywhere;font-size:12px;line-height:1.65}

/* V0.9.0: compact, accessible research section across mobile and desktop. */
.research-lab{background:linear-gradient(125deg,#f3fcf6,#fcfff8);border:1px solid #cbe7d5;border-radius:18px;padding:18px;margin:14px 0 18px}
.research-lab h2{font-size:19px;margin:0 0 8px;color:#255a42}
.research-lab form{display:grid;gap:9px;margin-top:12px}
.research-lab textarea{width:100%;min-height:76px;resize:vertical;background:#fff;border:1px solid #bddcca;border-radius:12px;padding:12px;font:inherit}
.research-lab label{font-size:13px;color:#4d755e}
.research-consent{display:flex;align-items:flex-start;gap:8px;line-height:1.6}
.research-consent input{margin-top:4px;flex:none}
.research-buttons{display:flex;gap:8px;flex-wrap:wrap}
.research-answer{border-top:1px solid #dcece1;margin-top:14px;padding-top:13px}
.research-answer p{white-space:pre-wrap;line-height:1.7;overflow-wrap:anywhere}
.research-sources{display:grid;grid-template-columns:repeat(auto-fit,minmax(min(310px,100%),1fr));gap:10px;margin-top:10px}
.research-source{background:#fff;border:1px solid #e0ece3;padding:14px;border-radius:14px;min-width:0}
.research-source h4{margin:0;font-size:14px;color:#225e43;overflow-wrap:anywhere}
.research-source blockquote{border-left:3px solid #87bfa0;margin:10px 0;padding:8px 12px;line-height:1.75;white-space:pre-wrap;overflow-wrap:anywhere;font-size:13px;background:#f7fbf6}
.research-source>p{font-size:12px;line-height:1.6;white-space:pre-wrap;overflow-wrap:anywhere}
@media(max-width:560px){.research-lab{padding:13px}.research-buttons>.button{flex:1 1 135px}}

/* V0.9.1 verified evidence export remains visible on narrow screens. */
.research-export{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-top:13px}
@media(max-width:560px){.research-export>.button{width:100%;white-space:normal}}

/* V1.0.0 — Friendly, mobile-first offline/sync desk in Settings. */
.offline-center{border:1px solid #d5e9d8;border-radius:16px;background:#f6fcf6;padding:13px;margin:16px 0;min-width:0}
.offline-summary{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:10px}
.offline-summary b{font-size:12px;font-weight:650;color:#346d53;background:white;border:1px solid #dbecde;border-radius:999px;padding:8px 12px}
.offline-item{display:flex;align-items:center;flex-wrap:wrap;gap:8px;border:1px solid #e0ebe0;background:#fff;padding:12px;margin-top:9px;border-radius:13px;min-width:0}
.offline-item>div{min-width:145px;flex:1 1 195px;display:flex;flex-direction:column;gap:6px}
.offline-item b{font-size:13px;line-height:1.5;overflow-wrap:anywhere;color:#2d5f47}
.offline-item span{font-size:12px;color:#617a66;overflow-wrap:anywhere}
.offline-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:13px}
.offline-compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:12px 0}
.offline-compare p{background:#f3faf5;border:1px solid #d6eadd;border-radius:12px;padding:12px;margin:0!important;display:flex;flex-direction:column;gap:9px;overflow-wrap:anywhere}
.offline-compare p b{color:#307150}
@media(max-width:560px){.offline-center{padding:10px}.offline-item>.button{flex:1 1 auto;min-height:40px}.offline-compare{grid-template-columns:1fr}.offline-actions>.button{flex:1 1 135px}.offline-summary b{flex:1 1 120px;text-align:center}}