:root{--paper:#f6f3ec;--surface:#fffdf8;--ink:#263d39;--muted:#75817b;--line:#dedfd4;--accent:#ae4f33;--accent-wash:#f6e9de;--green-wash:#e9eee5;--radius:18px;--shadow:0 8px 30px rgba(44,61,46,.035);font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;color:var(--ink);background:var(--paper);font-synthesis:none}
*{box-sizing:border-box}body{margin:0}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled,select:disabled,input:disabled{cursor:wait}a{color:inherit}button:focus-visible,a:focus-visible,select:focus-visible,input:focus-visible{outline:3px solid #c77e50;outline-offset:4px}button{color:inherit}svg{fill:none;stroke:currentColor;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}button[hidden],[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:-100px;left:20px;background:var(--ink);color:white;padding:12px;z-index:10}.skip-link:focus{top:12px}.page-shell{max-width:1152px;margin:0 auto;padding:0 52px}.masthead{height:112px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;gap:13px;align-items:center;text-decoration:none}.brand-mark{display:grid;place-items:center;width:45px;height:48px;border-radius:13px;background:var(--ink);color:var(--surface);font:2rem "Songti SC","Noto Serif CJK SC",SimSun,serif}.brand strong{font-size:1.0625rem;font-weight:650;letter-spacing:-.4px;line-height:1.3}.brand-caption{display:block;font-size:0.625rem;letter-spacing:1.2px;text-transform:uppercase;color:var(--muted);margin-top:4px}.private-note{display:flex;align-items:center;gap:7px;font-size:0.75rem;color:var(--muted)}.status-dot{width:6px;height:6px;background:#8d9c83;border-radius:50%}.intro{display:grid;grid-template-columns:1fr 284px;gap:56px;padding:57px 0 49px;align-items:center}.eyebrow{font-size:0.625rem;line-height:1.6;letter-spacing:1.8px;color:var(--accent);font-weight:700;margin:0 0 18px}h1{font-size:clamp(2.375rem,4.5vw,3.3125rem);font-weight:570;line-height:1.1;letter-spacing:-2px;margin:0}h1 span{font-family:Georgia,"Times New Roman",serif;font-style:italic;font-weight:400;letter-spacing:-1.6px}.intro-description{font-size:0.875rem;line-height:1.75;color:#788177;margin:21px 0 0}.source-line{display:flex;align-items:flex-start;gap:8px;font-size:0.6875rem;line-height:1.55;color:var(--muted);margin-top:21px;max-width:560px}.source-line svg{width:16px;height:16px;margin-top:1px}.collection-card{height:242px;border:1px solid #d9ddcf;border-radius:21px;position:relative;background:#edf0e5;display:flex;flex-direction:column;overflow:hidden}.collection-art{position:relative;display:flex;align-items:center;justify-content:center;flex:1;isolation:isolate}.collection-art:before{content:"";position:absolute;width:156px;height:156px;left:16px;top:16px;border:1px solid #d8ddcc;border-radius:50%;z-index:-1}.collection-art:after{content:"";position:absolute;width:108px;height:108px;right:-25px;top:-25px;border:1px solid #d8ddcc;border-radius:50%;z-index:-1}.collection-art>span:first-child{font:7rem/1.1 "Songti SC","STSong","Noto Serif CJK SC",SimSun,serif;color:#52624b;transform:rotate(-5deg);margin-top:2px}.art-seal{position:absolute;right:37px;top:37px;border:1px solid #b4684c;border-radius:3px;padding:5px 3px;color:#ad654b;font:0.625rem/1.3 serif;transform:rotate(4deg)}.collection-stats{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid #d7ddcd;padding:17px 0;background:rgba(255,255,255,.16)}.collection-stats>div{text-align:center}.collection-stats>div+div{border-left:1px solid #d7ddcd}.collection-stats strong{font-weight:550;font-size:1.375rem;letter-spacing:-1px}.collection-stats span{font-size:0.625rem;color:#798272;display:block;margin-top:5px}.workspace{padding:0 0 4px}.workspace-topline{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px;gap:12px}h2{margin:0;font-size:1.3125rem;letter-spacing:-.6px;font-weight:600}.utility-actions{display:flex;align-items:center;gap:15px}.text-button,.icon-button{background:none;border:0;padding:6px 0;display:flex;gap:7px;align-items:center;color:var(--muted);font-size:0.6875rem;min-height:36px}.text-button:hover,.icon-button:hover{color:var(--accent)}.text-button svg,.icon-button svg{width:17px;height:17px}.icon-button{width:32px;justify-content:center}.filters{display:grid;grid-template-columns:1fr 198px;gap:12px}.search-control{height:57px;display:flex;align-items:center;position:relative;background:var(--surface);border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow)}.search-control>svg{width:20px;height:20px;color:var(--accent);margin-left:19px}.search-control:focus-within{border-color:#bba88d;box-shadow:0 0 0 3px #ae4f330c}.search-control input{width:100%;min-width:0;height:100%;padding:0 45px 0 13px;background:none;border:0;outline:none!important;font-size:0.8125rem;color:var(--ink)}.search-control input::-webkit-search-cancel-button{display:none}.search-control input::placeholder{color:#92998e}.clear-search{position:absolute;right:10px;top:8px;width:39px;height:39px;background:none;border:0;font-size:1.5rem;color:var(--muted)}.lesson-control{position:relative}.lesson-control select{appearance:none;width:100%;height:57px;cursor:pointer;border:1px solid var(--line);border-radius:13px;padding:0 38px 0 18px;background:var(--surface);font-size:0.75rem;color:var(--ink);box-shadow:var(--shadow);text-overflow:ellipsis}.lesson-control svg{position:absolute;width:17px;height:17px;right:16px;top:20px;pointer-events:none;color:var(--muted)}.filter-options{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:15px 0 24px}.section-switch{background:#eaeae1;border:1px solid #e1e2d8;border-radius:10px;padding:4px;display:inline-flex;gap:4px}.section-switch button{border:0;background:none;border-radius:7px;padding:10px 12px;font-size:0.6875rem;white-space:nowrap;color:#7c8276;min-height:37px;transition:background .15s,color .15s}.section-switch button[aria-pressed="true"]{background:var(--surface);box-shadow:0 2px 5px #3c4e3c09;color:var(--ink)}.section-switch button>span{font-size:0.5625rem;padding:2px 5px;background:#e4e8db;color:#7e8874;border-radius:4px;margin-left:6px}.section-switch button[aria-pressed="true"]>span{color:var(--accent);background:var(--accent-wash)}.unique-control{font-size:0.6875rem;color:#7e877a;display:flex;align-items:center;gap:8px;cursor:pointer;white-space:nowrap;min-height:44px}.unique-control input{position:absolute;opacity:0;width:34px;height:20px}.switch-track{height:20px;width:34px;border-radius:30px;background:#dce0d3;position:relative;transition:background .15s}.switch-track:after{position:absolute;content:"";width:14px;height:14px;top:3px;left:3px;background:var(--surface);border-radius:50%;box-shadow:0 1px 3px #263d391a;transition:transform .15s}.unique-control input:checked+.switch-track{background:var(--ink)}.unique-control input:checked+.switch-track:after{transform:translateX(14px)}.unique-control input:focus-visible+.switch-track{outline:3px solid #c77e50;outline-offset:4px}.results-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:30px;margin-bottom:14px}.results-meta p{font-size:0.6875rem;color:var(--muted);margin:0;line-height:1.5}.results-meta strong{color:var(--ink);font-weight:600}.reset-button{border:0;background:none;color:var(--accent);font-size:0.6875rem;white-space:nowrap;padding:8px 0}.reset-button span{padding-left:4px}.word-list{outline:0;display:grid;gap:22px}.lesson-block{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface);overflow:hidden;box-shadow:var(--shadow)}.lesson-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:20px 24px;background:#f0f1e8;border-bottom:1px solid var(--line)}.lesson-heading-copy{display:flex;align-items:center;gap:14px;min-width:0}.lesson-number{display:flex;align-items:center;justify-content:center;width:39px;height:39px;flex-shrink:0;border:1px solid #cfd6c4;border-radius:11px;color:#7b896f;font-size:0.8125rem;font-family:Georgia,serif}.lesson-heading h3{font-size:0.9375rem;font-weight:600;letter-spacing:-.2px;margin:0;line-height:1.4}.lesson-title{font-size:0.6875rem;line-height:1.5;margin:3px 0 0;color:#87907f}.lesson-count{font-size:0.625rem;white-space:nowrap;color:#86917e}.word-grid-head,.word-row{display:grid;grid-template-columns:minmax(90px,1.04fr) minmax(120px,1.1fr) minmax(200px,2.4fr) 75px;gap:16px;align-items:center}.word-grid-head{padding:12px 24px 10px;font-size:0.5625rem;color:#9aa18e;letter-spacing:1px;text-transform:uppercase;border-bottom:1px solid #eeeee6}.word-grid-head span:last-child{text-align:right}.word-row{padding:17px 24px;border-bottom:1px solid #edeee6;min-height:80px;transition:background .12s}.word-row:last-child{border-bottom:0}.word-row:hover{background:#faf9f2}.hanzi{font:1.8125rem/1.35 "PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;letter-spacing:1px;overflow-wrap:anywhere}.pinyin{font-size:0.8125rem;line-height:1.6;color:var(--accent);overflow-wrap:anywhere}.translation{font-size:0.8125rem;line-height:1.65;color:#5b6c62;overflow-wrap:anywhere}.entry-meta{margin-top:4px;display:flex;align-items:center;flex-wrap:wrap;gap:5px 8px}.additional-badge,.uncertain-badge,.repeat-badge{font-size:0.5625rem;line-height:1.5;padding:2px 5px;border-radius:4px;letter-spacing:0;display:inline-block}.additional-badge{background:var(--accent-wash);color:#9d6b4c}.uncertain-badge{background:#fbf0d4;color:#937225}.repeat-badge{background:var(--green-wash);color:#73836a}.page-reference{text-align:right;font-size:0.625rem;line-height:1.5;align-self:center;color:#8a9680}.page-reference a{text-decoration:none;display:inline-block;padding:8px 0 8px 8px}.page-reference a:hover{color:var(--accent)}.page-reference a:after{content:" ↗";font-size:0.625rem}.loading-state,.empty-state{padding:65px 25px;text-align:center;border:1px dashed #d6dbc9;border-radius:18px;color:var(--muted);font-size:0.8125rem;line-height:1.7}.loading-state{display:flex;align-items:center;justify-content:center;gap:10px}.loading-dot{width:7px;height:7px;border-radius:50%;background:#8e9c80;animation:pulse 1.4s ease-in-out infinite}.empty-state-symbol{font:2.625rem/1.3 serif;color:#adb99d;display:block;margin-bottom:15px}.empty-state h3{font-size:1.125rem;color:var(--ink);margin:0 0 7px;font-weight:500}.empty-state p{margin:0 auto;max-width:440px}.empty-state button{margin-top:20px;background:var(--ink);border:0;border-radius:9px;color:white;padding:12px 18px;font-size:0.75rem;min-height:44px}.data-note{font-size:0.6875rem;line-height:1.75;color:#87917d;padding:18px 0 0;margin:0}.page-footer{padding:35px 0 28px;margin-top:27px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:0.625rem;color:#929b88;gap:20px}.footer-brand{letter-spacing:1.5px}.footer-brand span{letter-spacing:.2px}.page-footer a{text-decoration:none;white-space:nowrap}.page-footer a:hover{color:var(--accent)}.noscript-message{margin:30px;padding:30px;border:1px solid var(--accent)}@keyframes pulse{50%{opacity:.3}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important}}
@media(min-width:1450px){.page-shell{max-width:1210px}.intro{grid-template-columns:1fr 310px;gap:80px}}
@media(max-width:800px){.page-shell{padding:0 28px}.intro{grid-template-columns:1fr 220px;gap:25px;padding:40px 0}.collection-card{height:225px}.collection-art>span:first-child{font-size:6rem}.art-seal{right:25px}.eyebrow{font-size:0.5rem;letter-spacing:1.3px}h1{font-size:2.5rem}.intro-description{font-size:0.75rem}.source-line{font-size:0.625rem}.word-grid-head,.word-row{grid-template-columns:minmax(70px,.85fr) minmax(90px,1fr) minmax(150px,1.9fr) 55px;gap:12px}.word-row,.word-grid-head{padding-left:20px;padding-right:20px}.hanzi{font-size:1.5625rem}.translation,.pinyin{font-size:0.75rem}.section-switch button{font-size:0.625rem;padding:9px}.section-switch button>span{margin-left:3px}.unique-control{font-size:0.625rem}}
@media(max-width:600px){.page-shell{padding:0 19px}.masthead{height:88px;gap:10px}.brand{gap:10px}.brand-mark{width:38px;height:42px;border-radius:11px;font-size:1.6875rem}.brand strong{font-size:0.9375rem}.brand-caption{font-size:0.5rem;letter-spacing:1px}.private-note{font-size:0.5625rem;gap:5px}.status-dot{width:5px;height:5px}.intro{display:block;position:relative;padding:34px 0 31px}.intro-copy{position:relative;z-index:1}.eyebrow{font-size:0.5rem;letter-spacing:1.15px;margin:0 0 15px}h1{font-size:2.3125rem;letter-spacing:-1.7px}h1 span{letter-spacing:-1.4px}.intro-description{font-size:0.6875rem;line-height:1.8;margin-top:17px;max-width:75%}.collection-card{position:absolute;right:0;top:79px;height:104px;width:84px;border-radius:13px;background:transparent;border:0;opacity:.8;pointer-events:none}.collection-art:before{width:90px;height:90px;left:-4px;top:7px}.collection-art:after{display:none}.collection-art>span:first-child{font-size:4.0625rem;color:#98a28a;transform:rotate(-6deg)}.art-seal{font-size:0.375rem;right:0;top:17px;padding:3px 2px}.collection-stats{display:none}.source-line{margin-top:19px;max-width:100%;font-size:0.5625rem;gap:6px}.source-line svg{width:13px;height:13px}.workspace-topline{margin-bottom:14px}h2{font-size:1.1875rem}.utility-actions{gap:10px}.text-button{font-size:0.625rem}.text-button svg{width:14px;height:14px}.icon-button{width:27px}.filters{grid-template-columns:1fr;gap:10px}.search-control{height:54px;border-radius:11px}.search-control input{font-size:0.75rem;padding-left:10px}.search-control>svg{width:18px;height:18px;margin-left:15px}.lesson-control select{height:47px;border-radius:10px;font-size:0.75rem;padding-left:15px}.lesson-control svg{top:15px;right:14px}.filter-options{margin-top:13px;margin-bottom:13px;flex-wrap:wrap;gap:3px}.section-switch{width:100%;display:grid;grid-template-columns:1.14fr 1.4fr .5fr;gap:2px;padding:4px}.section-switch button{padding:10px 4px;font-size:0.625rem;min-height:39px}.section-switch button>span{font-size:0.5rem;padding:2px 4px;margin-left:3px}.unique-control{margin-left:auto;margin-top:3px;min-height:38px;font-size:0.625rem}.switch-track{height:18px;width:31px}.switch-track:after{width:12px;height:12px}.unique-control input:checked+.switch-track:after{transform:translateX(13px)}.results-meta{margin-bottom:10px;gap:10px}.results-meta p{font-size:0.625rem}.reset-button{font-size:0.5625rem}.word-list{gap:17px}.lesson-block{border-radius:14px}.lesson-heading{padding:16px;gap:10px}.lesson-heading-copy{gap:10px}.lesson-number{height:34px;width:34px;border-radius:9px;font-size:0.75rem}.lesson-heading h3{font-size:0.8125rem}.lesson-title{font-size:0.625rem;line-height:1.4}.lesson-count{font-size:0.5625rem}.word-grid-head{display:none}.word-row{grid-template-columns:minmax(70px,.9fr) minmax(130px,1.5fr) 44px;column-gap:13px;row-gap:2px;padding:16px;min-height:95px;align-items:start;position:relative}.hanzi{grid-column:1;grid-row:1;font-size:1.5625rem;line-height:1.25;letter-spacing:.5px}.pinyin{grid-column:1;grid-row:2;font-size:0.6875rem;line-height:1.5;align-self:start;margin-top:2px}.translation-cell{grid-column:2;grid-row:1 / span 2;align-self:center}.translation{font-size:0.75rem;line-height:1.55}.page-reference{grid-column:3;grid-row:1 / span 2;font-size:0.5625rem}.page-reference a{padding:10px 0;min-height:36px;white-space:nowrap}.page-reference a:after{font-size:0.5rem}.entry-meta{margin-top:5px;gap:4px}.additional-badge,.uncertain-badge,.repeat-badge{font-size:0.5rem}.page-footer{margin-top:23px;padding:25px 0;font-size:0.5625rem;gap:12px}.footer-brand{letter-spacing:1px}.footer-brand span{font-size:0.5rem}.data-note{font-size:0.625rem}.empty-state,.loading-state{padding:45px 20px;font-size:0.75rem}.empty-state h3{font-size:1rem}}
@media(max-width:360px){.page-shell{padding:0 13px}.private-note{font-size:0.5rem}h1{font-size:2.125rem}.collection-card{right:-4px;width:66px}.collection-art>span:first-child{font-size:3.375rem}.word-row{grid-template-columns:minmax(60px,.8fr) minmax(110px,1.5fr) 38px;gap:2px 10px;padding:14px}.section-switch button{font-size:0.5625rem}.section-switch button>span{font-size:0.4375rem}.page-footer{flex-wrap:wrap}}
@media print{body{background:white;color:black}.page-shell{max-width:none;padding:0}.masthead{height:70px}.brand-mark{background:white;color:black;border:1px solid #aaa}.private-note,.collection-card,.intro-description,.eyebrow,.utility-actions,.filters,.filter-options,.reset-button,.page-footer,.data-note,.skip-link{display:none!important}.intro{display:block;padding:20px 0}.intro h1{font-size:1.5625rem}.intro h1 br{display:none}.source-line{margin-top:10px}.workspace-topline{margin:15px 0}.results-meta{margin:0 0 15px}.lesson-block{box-shadow:none;border-color:#bbb;border-radius:0;overflow:visible;break-inside:auto}.lesson-heading{break-after:avoid;background:#eee!important;padding:12px 16px}.word-row{break-inside:avoid;min-height:60px;padding:9px 16px}.word-grid-head{padding:8px 16px}.word-list{display:block}.lesson-block+.lesson-block{margin-top:18px}.hanzi{font-size:1.375rem}.pinyin,.translation{font-size:0.6875rem}.page-reference a:after{display:none}.word-grid-head,.word-row{display:grid;grid-template-columns:100px 130px 1fr 55px}.hanzi,.pinyin,.translation-cell,.page-reference{grid-column:auto;grid-row:auto}.page-reference{font-size:0.5625rem}.loading-state{display:none}}

.pdf-page{display:block;font-size:0.5rem;line-height:1.5;color:#7e8976;white-space:nowrap;margin-top:3px}.source-note{font-size:0.625rem;line-height:1.6;color:#8b816a;margin-top:7px}.page-reference a+.pdf-page{margin-top:-5px}@media(max-width:600px){.source-note{font-size:0.5625rem}.pdf-page{font-size:0.4375rem}.page-reference a+.pdf-page{margin-top:-7px}}

/* Readable secondary copy and comfortable phone controls. */
:root{--muted:#647269}.intro-description{color:#687566}.source-line,.brand-caption{color:#687566}.section-switch button{color:#616e5c}.unique-control{color:#65715d}.lesson-title,.lesson-count{color:#69775f}.word-grid-head{color:#68765e}.page-reference{color:#65725c}.page-footer{color:#6d7c60}.data-note{color:#687660}.search-control input::placeholder{color:#77826f}.source-note{color:#796c51}.additional-badge{color:#855334}.repeat-badge{color:#586c4e}.pdf-page{color:#748167}
@media(max-width:600px){.intro-description{font-size:0.75rem}.search-control input{font-size:0.8125rem}.section-switch button{font-size:0.6875rem}.unique-control{font-size:0.6875rem}.translation{font-size:0.8125rem}.pinyin{font-size:0.75rem}.results-meta p{font-size:0.6875rem}.lesson-heading h3{font-size:0.875rem}.lesson-title{font-size:0.6875rem}.source-line{font-size:0.625rem}.section-switch button{min-height:42px}.lesson-control select{min-height:48px}.text-button,.icon-button{min-height:44px}.reset-button{min-height:40px;font-size:0.625rem}}


.lesson-heading-copy>div{min-width:0;overflow-wrap:anywhere}

.dictionary-notes{margin:-4px 0 16px;color:#6d7b60;font-size:0.6875rem}.dictionary-notes summary{cursor:pointer;width:fit-content;padding:7px 0;min-height:30px}.dictionary-notes summary:focus-visible{outline:3px solid #c77e50;outline-offset:4px}.dictionary-notes .data-note{margin:5px 0 0;padding:12px 16px;background:#ecefe3;border-radius:10px;max-width:850px}.dictionary-notes[open]{margin-bottom:22px}@media(max-width:600px){.dictionary-notes{font-size:0.625rem;margin-top:-6px}.dictionary-notes summary{min-height:35px;padding:9px 0}}@media print{.dictionary-notes{display:none}}

/* Lesson excerpts are collapsed by default to keep vocabulary scannable. */
.word-entry{border-bottom:1px solid #edeee6}.word-entry:last-child{border-bottom:0}.word-entry>.word-row{border-bottom:0}.example-cell{padding:0 24px 13px}.word-example{max-width:100%;border-top:1px solid #edf0e5}.word-example summary{width:fit-content;max-width:100%;min-height:36px;padding:10px 0 7px;cursor:pointer;font-size:0.6875rem;line-height:1.6;color:#7e5b3d}.word-example summary:focus-visible{outline:3px solid #c77e50;outline-offset:3px}.word-example[open] summary{padding-bottom:11px}.example-body{background:#f0f3e9;border:1px solid #e1e7d6;border-radius:11px;padding:17px 19px;overflow-wrap:anywhere}.example-body+.example-body{margin-top:10px}.example-chinese{font-family:"PingFang SC","Microsoft YaHei","Noto Sans CJK SC",sans-serif;font-size:1.1875rem;line-height:1.9;letter-spacing:.5px;color:#354e3e;margin:0}.example-translation{font-size:0.8125rem;line-height:1.7;color:#5b6c62;margin:9px 0 0}.example-translation-origin{font-size:0.5625rem;line-height:1.5;color:#778368;margin:4px 0 0}.example-component{font-size:0.625rem;line-height:1.6;color:#84623c;background:#f7ecdc;border-radius:5px;display:table;padding:4px 7px;margin:10px 0 0}.example-source{font-size:0.625rem;line-height:1.65;color:#758368;margin:12px 0 0}.example-missing{font-size:0.625rem;color:#7b8473;line-height:1.6;margin:0;padding:0 0 3px}.word-entry:has(.example-row)>.word-row{padding-bottom:12px}@media(max-width:600px){.example-cell{padding:0 16px 13px}.word-example summary{font-size:0.6875rem;min-height:44px;padding:12px 0 10px}.example-body{padding:13px 14px;border-radius:9px}.example-chinese{font-size:1.125rem;line-height:1.85}.example-translation{font-size:0.75rem;line-height:1.75}.example-translation-origin{font-size:0.5625rem}.example-source{font-size:0.5625rem}.example-component{font-size:0.5625rem}.example-missing{font-size:0.625rem}.word-entry:has(.example-row)>.word-row{padding-bottom:7px}}@media print{.word-entry{break-inside:avoid}.example-cell{padding:0 16px 10px}.example-body{background:transparent;border-color:#ddd;padding:8px 12px}.word-example:not([open]),.example-missing{display:none}.word-example summary{font-size:0.625rem}.example-chinese{font-size:0.875rem}.example-translation{font-size:0.625rem}}

.course-picker{display:flex;align-items:center;gap:12px;margin:0 0 15px;padding:12px 15px;background:#edf0e5;border:1px solid #d9dfce;border-radius:12px}.course-picker>label{font-size:0.6875rem;color:#687660}.course-control{position:relative;min-width:146px}.course-control select{appearance:none;cursor:pointer;width:100%;height:40px;border:1px solid #cbd6bf;border-radius:8px;background:var(--surface);color:var(--ink);font-size:0.8125rem;font-weight:550;padding:0 38px 0 12px}.course-control svg{position:absolute;right:12px;top:12px;width:16px;height:16px;pointer-events:none;color:#6e7c63}.course-picker>span{font-size:0.625rem;color:#6f7c64;margin-left:auto;line-height:1.5}@media(max-width:600px){.course-picker{padding:11px 12px;gap:9px;flex-wrap:wrap;margin-bottom:13px}.course-picker>label{font-size:0.6875rem}.course-control{flex:1;min-width:170px}.course-control select{height:44px;font-size:0.8125rem}.course-control svg{top:14px}.course-picker>span{flex-basis:100%;margin:0;font-size:0.625rem}}@media print{.course-picker{display:none!important}}

/* Lesson-specific, simple flashcard browsing. */
.lesson-cards,.flash-controls button,.flash-close{min-height:44px;border:1px solid #b6c3ab;border-radius:9px;background:var(--surface);color:var(--ink);padding:10px 14px;font:inherit;font-size:0.75rem;cursor:pointer}.lesson-cards{white-space:nowrap}.flash-dialog{width:min(600px,calc(100% - 28px));max-height:calc(100dvh - 28px);overflow:auto;box-sizing:border-box;border:1px solid var(--line);border-radius:20px;padding:24px;background:var(--surface);color:var(--ink)}.flash-dialog::backdrop{background:#20392bcc;backdrop-filter:blur(3px)}.flash-header{display:flex;align-items:center;justify-content:space-between;gap:15px}.flash-header h2{font-size:1.1875rem}.flash-section{width:100%;min-height:44px;margin-top:20px;padding:10px;border:1px solid #b6c3ab;border-radius:9px;background:var(--surface);color:var(--ink);font:inherit;font-size:0.875rem}.flash-counter{text-align:center;font-size:0.8125rem;color:var(--muted);margin:16px 0}.flash-card{width:100%;min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:22px;padding:30px 20px;border:1px solid #cfd6c4;border-radius:18px;background:#edf0e5;color:var(--ink);cursor:pointer;touch-action:pan-y;overflow-wrap:anywhere}.flash-hanzi{font:4rem/1.5 "PingFang SC","Microsoft YaHei",sans-serif;max-width:100%}.flash-pinyin{font-size:1.8125rem;color:var(--accent);line-height:1.5}.flash-translation{font-size:1.3125rem;line-height:1.6}.flash-side{font-size:0.6875rem;color:var(--muted)}.flash-controls{display:flex;justify-content:space-between;gap:15px;margin-top:16px}.flash-controls button{flex:1}.flash-controls button:disabled{opacity:.4;cursor:default}.flash-hint{font-size:0.6875rem;line-height:1.7;color:var(--muted);margin:17px 0 0}.flash-dialog button:focus-visible,.flash-section:focus-visible,.lesson-cards:focus-visible{outline:3px solid #b77144;outline-offset:3px}@media(max-width:600px){.flash-dialog{padding:17px}.flash-header h2{font-size:1rem}.flash-close{padding:8px;font-size:0.6875rem}.flash-hanzi{font-size:3.1875rem}.flash-card{min-height:245px;padding:24px 14px}.flash-translation{font-size:1.125rem}.lesson-heading{flex-wrap:wrap}.lesson-heading-copy{flex:1}.lesson-cards{font-size:0.6875rem;padding:8px 10px}}@media print{.lesson-cards,.flash-dialog{display:none!important}}

/* Compact lesson headers; cards remain a separate, always-visible action. */
.lesson-heading{padding:0 16px 0 0;gap:10px;border-bottom:0;flex-wrap:nowrap}.lesson-toggle{display:flex;align-items:center;gap:18px;flex:1;min-width:0;min-height:76px;padding:16px 18px;border:0;background:none;color:inherit;text-align:left;font:inherit;cursor:pointer}.lesson-toggle .lesson-heading-copy{flex:1}.lesson-chevron{font-size:1.3125rem;color:#69775f;transition:transform .15s}.lesson-toggle[aria-expanded="true"] .lesson-chevron{transform:rotate(180deg)}.lesson-toggle:focus-visible{outline:3px solid #b77144;outline-offset:-4px;border-radius:10px}.lesson-toggle:hover{background:#e8eddf}.lesson-words{border-top:1px solid var(--line)}.lesson-words[hidden]{display:none}.word-list{gap:12px}@media(max-width:600px){.lesson-heading{padding-right:12px;gap:4px}.lesson-toggle{padding:13px 10px 13px 13px;gap:8px;min-height:73px;flex-wrap:wrap}.lesson-toggle .lesson-heading-copy{flex-basis:calc(100% - 25px)}.lesson-toggle .lesson-count{padding-left:44px;order:3}.lesson-chevron{font-size:1.125rem}.lesson-toggle .lesson-title{font-size:0.625rem}.lesson-cards{padding:8px 9px}}@media print{.lesson-words[hidden]{display:block!important}.lesson-toggle{padding:0;min-height:0}.lesson-chevron{display:none}.lesson-heading{padding:12px 16px}}
.flash-shuffle{display:block;min-height:44px;margin:10px auto 0;border:0;background:none;color:var(--accent);font:inherit;font-size:0.75rem;text-decoration:underline;text-underline-offset:4px;cursor:pointer}.flash-shuffle:disabled{opacity:.4;cursor:default}

.example-pinyin{font-size:0.875rem;line-height:1.85;color:#84623c;margin:5px 0 0;letter-spacing:.1px}.example-pinyin-origin{font-size:0.5625rem;line-height:1.5;color:#778368;margin:3px 0 0}@media(max-width:600px){.example-pinyin{font-size:0.8125rem;line-height:1.8}}@media print{.example-pinyin{font-size:0.6875rem}.example-pinyin-origin{font-size:0.5rem}}

.word-audio{display:block;margin-top:7px}.audio-button{min-height:44px;padding:8px 11px;border:1px solid #cbd6bf;border-radius:8px;background:var(--surface);color:var(--ink);font:inherit;font-size:0.6875rem;cursor:pointer}.audio-button[aria-pressed="true"]{background:#dce8d0}.audio-button:focus-visible{outline:3px solid #b77144;outline-offset:3px}.audio-status{display:block;font-size:0.6875rem;line-height:1.5;color:#9b4d36;margin-top:3px}.audio-status:empty{display:none}.audio-note{font-size:0.625rem;line-height:1.65;color:var(--muted);margin:13px 0 0}.audio-note-row .audio-note{padding:12px 24px;margin:0;background:#f6f7f0}.flash-audio{text-align:center}.flash-audio .word-audio{margin-top:12px}.flash-audio .audio-button{min-width:120px}@media(max-width:600px){.audio-note-row .audio-note{padding:12px 16px}.audio-button{font-size:0.625rem;padding:8px}.flash-dialog .audio-note{font-size:0.625rem}}@media print{.word-audio,.flash-audio,.audio-note-row{display:none!important}}
/* Reusable component inspector; shared by dictionary and shuffled decks. */
.component-open{display:block;margin-top:7px;padding:4px 9px;border:1px solid #d9d9e8;border-radius:7px;background:#f6f3fb;color:#66558d;font:500 0.6875rem/1.5 system-ui;cursor:pointer;letter-spacing:0}
.component-open:hover{background:#ece4fa;border-color:#a999c5}.flash-components{display:flex;justify-content:center}.flash-components .component-open{font-size:0.875rem;padding:7px 14px;margin:0 0 12px}
.component-dialog{width:min(840px,calc(100vw - 28px));max-height:calc(100dvh - 32px);padding:26px;border:1px solid #d9dfeb;border-radius:20px;background:#fbfcfe;color:#203047;box-shadow:0 25px 90px #13254240;overflow:auto}
.component-dialog::backdrop{background:#14223d80;backdrop-filter:blur(3px)}.component-header{display:flex;justify-content:space-between;align-items:center;gap:18px}.component-header h2{font-size:2rem;margin:0}.component-dialog button{cursor:pointer}.component-close{padding:8px 12px;border:1px solid #d6dce7;background:white;border-radius:8px;white-space:nowrap;font:inherit}.component-context{color:#52617a;margin:10px 0}.component-intro{font-size:0.875rem;color:#68768c}.component-character-tabs{display:flex;gap:8px;flex-wrap:wrap;margin:18px 0}.component-character{font:1.625rem/1.2 serif;border:1px solid #d7dfec;background:white;border-radius:10px;padding:9px 16px}.component-character[aria-pressed=true]{background:#ede8f7;border-color:#8b72b3;color:#60428c}.component-stage{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}.component-glyph{display:block;width:100%;max-width:340px;margin:auto;background:white;border:1px solid #e5e9f0;border-radius:18px}.component-stroke-group{cursor:pointer;transition:filter .15s}.component-stroke-group:hover,.component-stroke-group:focus{filter:brightness(.7);outline:none}.component-stroke-group:focus path{stroke:#17243b;stroke-width:4}.component-legend{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin-top:14px}.component-chip{min-width:44px;min-height:44px;padding:7px 12px;border:2px solid transparent;background:white;color:var(--component-color);border-radius:10px;font:1.5rem serif}.component-chip[aria-pressed=true]{border-color:var(--component-color);background:#f5f5fa}.component-status{font-size:0.8125rem;color:#6c7a90;line-height:1.5}.component-card{padding:22px;border:1px solid #e2e6ef;border-radius:16px;background:white}.component-form{font-size:4.75rem;line-height:1.3;font-family:serif}.component-card h3{margin:8px 0;font-size:1.0625rem}.component-meaning{font-size:1.0625rem;line-height:1.55}.component-reading{color:#65548a}.component-note,.component-original{font-size:0.8125rem;color:#68768c;line-height:1.6}.component-sources{margin-top:16px;border-top:1px solid #e1e7ee;padding-top:14px;font-size:0.75rem;color:#69788f;line-height:1.6}.component-sources summary{cursor:pointer}.component-sources a{color:#65548a}.component-dialog button:focus-visible{outline:3px solid #438ec2;outline-offset:3px}.component-fallback{font:7.5rem serif;text-align:center}
@media(max-width:600px){.component-dialog{padding:17px}.component-stage{grid-template-columns:1fr;gap:10px}.component-glyph{max-width:255px}.component-card{padding:15px}.component-form{font-size:3.25rem;float:left;margin:0 20px 10px 0}.component-card:after{content:'';display:block;clear:both}.component-dialog .component-header h2{font-size:1.6875rem}.component-context{font-size:0.875rem}}
@media print{.component-open,.component-dialog{display:none!important}}

/* Phone reading: normalize text-autosizing heuristics, without limiting pinch zoom.
   The optional local text-size control is independent of browser accessibility settings. */
.flash-dialog,.component-dialog{-webkit-text-size-adjust:100%;text-size-adjust:100%;--reading-scale:1;min-width:0;max-width:calc(100% - 24px);max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px);overscroll-behavior:contain;overflow-wrap:anywhere}
[data-reading-size="125"]{--reading-scale:1.25}[data-reading-size="150"]{--reading-scale:1.5}[data-reading-size="200"]{--reading-scale:2}
.reading-size-control{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin:12px 0;color:var(--muted);font-size:0.875rem;line-height:1.5}
.reading-size-select{min-height:44px;max-width:100%;padding:8px 10px;border:1px solid #cbd6bf;border-radius:9px;background:#fffdf8;color:#263d39;font-size:1rem;cursor:pointer}
.flash-header,.component-header{flex-wrap:wrap}.flash-header h2,.component-header h2{min-width:0;overflow-wrap:anywhere;flex:1}.flash-close,.component-close{flex-shrink:0;min-height:44px}
.flash-header h2{font-size:calc(1.125rem * var(--reading-scale));line-height:1.4}.flash-close,.flash-controls button,.flash-shuffle{font-size:calc(.9375rem * var(--reading-scale));line-height:1.4}
.flash-section{font-size:calc(1rem * var(--reading-scale));max-width:100%;min-width:0}.flash-counter{font-size:calc(.9375rem * var(--reading-scale))}
.flash-card{min-width:0;min-height:245px;height:auto}.flash-hanzi{font-size:calc(3.5rem * var(--reading-scale));line-height:1.4}.flash-pinyin{font-size:calc(1.75rem * var(--reading-scale));max-width:100%;overflow-wrap:anywhere}.flash-translation{font-size:calc(1.25rem * var(--reading-scale));max-width:100%;overflow-wrap:anywhere}
.flash-side,.flash-hint{font-size:calc(.875rem * var(--reading-scale));line-height:1.6}.flash-dialog .audio-note{font-size:calc(.75rem * var(--reading-scale));line-height:1.6}.flash-dialog .audio-button,.flash-dialog .component-open{font-size:calc(.9375rem * var(--reading-scale));min-height:44px}
.component-dialog .component-context,.component-dialog .component-intro{font-size:calc(.9375rem * var(--reading-scale));line-height:1.6}.component-dialog .component-meaning{font-size:calc(1.0625rem * var(--reading-scale))}.component-dialog .component-note,.component-dialog .component-original,.component-dialog .component-status,.component-dialog .component-sources{font-size:calc(.875rem * var(--reading-scale));line-height:1.6}.component-dialog .component-card h3{font-size:calc(1.0625rem * var(--reading-scale))}.component-stage>*,.component-card{min-width:0;overflow-wrap:anywhere}
@media(max-width:600px){.flash-dialog,.component-dialog{width:calc(100% - 24px);padding:16px;border-radius:16px}.flash-card{padding:24px 12px}.flash-header,.component-header{gap:10px}.flash-controls{gap:10px}.flash-controls button{padding:10px 8px}.reading-size-control{gap:6px}.reading-size-select{flex:1;min-width:0}.component-dialog .component-header h2{font-size:calc(1.5rem * var(--reading-scale))}}
@media(max-width:380px){.word-row{grid-template-columns:minmax(58px,.8fr) minmax(0,1.5fr) 36px;gap:2px 9px;padding:14px}.word-row>*{min-width:0}.section-switch{grid-template-columns:minmax(0,1fr) minmax(0,1.3fr) minmax(0,.45fr)}.section-switch button{white-space:normal}.flash-controls{flex-wrap:wrap}.flash-controls button{min-width:100px}}

/* Compact word rows open a shared-entry detail card; learning decks stay separate. */
.word-open{font:inherit;letter-spacing:inherit;color:inherit;text-align:left;border:0;background:none;padding:0;min-height:44px;max-width:100%;overflow-wrap:anywhere;cursor:pointer;text-decoration:underline;text-decoration-color:#cbd4c2;text-underline-offset:6px;text-decoration-thickness:1px}.word-open:hover{color:var(--accent);text-decoration-color:var(--accent)}.word-open:focus-visible{outline:3px solid #b77144;outline-offset:4px;border-radius:3px}
.word-detail-dialog{--reading-scale:1;width:min(640px,calc(100% - 24px));min-width:0;max-width:calc(100% - 24px);max-height:calc(100vh - 24px);max-height:calc(100dvh - 24px);overflow:auto;overscroll-behavior:contain;padding:24px;border:1px solid var(--line);border-radius:20px;background:var(--surface);color:var(--ink);-webkit-text-size-adjust:100%;text-size-adjust:100%;overflow-wrap:anywhere}
.word-detail-dialog[data-reading-size="125"]{--reading-scale:1.25}.word-detail-dialog[data-reading-size="150"]{--reading-scale:1.5}.word-detail-dialog[data-reading-size="200"]{--reading-scale:2}
.word-detail-dialog::backdrop{background:#20392bcc;backdrop-filter:blur(3px)}.word-detail-header{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.word-detail-header h2{font-size:calc(1.125rem * var(--reading-scale));line-height:1.5;flex:1;min-width:0}.word-detail-close{min-height:44px;padding:9px 12px;border:1px solid #b6c3ab;border-radius:9px;background:var(--surface);color:var(--ink);font-size:calc(.9375rem * var(--reading-scale));flex-shrink:0}.word-detail-origin{font-size:calc(.875rem * var(--reading-scale));color:var(--muted);line-height:1.6}.word-detail-main{padding:25px 18px;border:1px solid #d5ddcc;border-radius:16px;background:#edf0e5;text-align:center}.word-detail-hanzi{font:calc(3rem * var(--reading-scale))/1.5 "PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:anywhere}.word-detail-pinyin{font-size:calc(1.5rem * var(--reading-scale));color:var(--accent);line-height:1.6;margin:8px 0}.word-detail-translation{font-size:calc(1.125rem * var(--reading-scale));line-height:1.6;margin:8px 0 0}.word-detail-actions{display:flex;justify-content:center;align-items:center;flex-wrap:wrap;gap:12px;margin:16px 0}.word-detail-actions .word-audio,.word-detail-actions .component-open{margin:0}.word-detail-actions .audio-button,.word-detail-actions .component-open{min-height:44px;padding:9px 14px;font-size:calc(.9375rem * var(--reading-scale))}.word-detail-note{font-size:calc(.8125rem * var(--reading-scale));line-height:1.6;color:var(--muted)}.word-detail-dialog .example-cell{padding:0}.word-detail-dialog .word-example summary{font-size:calc(.875rem * var(--reading-scale))}.word-detail-dialog .example-chinese{font-size:calc(1.2rem * var(--reading-scale))}.word-detail-dialog .example-pinyin,.word-detail-dialog .example-translation{font-size:calc(.9375rem * var(--reading-scale))}.word-detail-dialog .example-source,.word-detail-dialog .example-pinyin-origin,.word-detail-dialog .example-translation-origin,.word-detail-dialog .example-component{font-size:calc(.75rem * var(--reading-scale))}
@media(max-width:600px){.word-detail-dialog{padding:16px;border-radius:16px}.word-detail-main{padding:20px 12px}.word-open{min-height:36px}}@media print{.word-detail-dialog{display:none!important}.word-open{text-decoration:none;min-height:0;cursor:default}}

/* One global reading size, inherited once through rem-based text everywhere. */
html[data-reading-size="100"]{font-size:100%}html[data-reading-size="125"]{font-size:125%}html[data-reading-size="150"]{font-size:150%}html[data-reading-size="200"]{font-size:200%}
html[data-reading-size]{--reading-scale:1;-webkit-text-size-adjust:100%;text-size-adjust:100%}
.header-preferences{display:flex;flex-direction:column;gap:8px;align-items:flex-end;min-width:0}.site-reading-control{display:flex;gap:9px;align-items:center;flex-wrap:wrap;font-size:.875rem;line-height:1.5;color:var(--muted)}.site-reading-control select{min-height:44px;padding:6px 10px;min-width:84px;max-width:100%;border:1px solid #b6c3ab;border-radius:8px;background:var(--surface);color:var(--ink);font-size:1rem;cursor:pointer}
.masthead{height:auto;min-height:112px;flex-wrap:wrap;padding:20px 0}.brand{min-width:0}.brand-caption{overflow-wrap:anywhere}.private-note{flex-wrap:wrap}.section-switch button{white-space:normal}.page-footer{flex-wrap:wrap}.page-footer a{white-space:normal}.lesson-toggle .lesson-count{white-space:normal}.lesson-cards{white-space:normal}.filters>*{min-width:0}.filter-options{flex-wrap:wrap}.course-picker{flex-wrap:wrap}.course-picker>span{min-width:0}.intro-copy{min-width:0}
@media(max-width:600px){.masthead{min-height:88px;padding:15px 0;gap:14px}.header-preferences{width:100%;align-items:flex-start;flex-direction:row;justify-content:space-between;flex-wrap:wrap;gap:10px}.site-reading-control{margin-left:auto}.intro-description{max-width:100%}.collection-card{display:none}.filter-options .section-switch{grid-template-columns:minmax(0,1fr) minmax(0,1.2fr) minmax(0,.5fr)}.word-row{grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr) minmax(32px,.5fr)}.word-row>*{min-width:0}.page-reference{overflow-wrap:anywhere}.page-reference a,.pdf-page{white-space:normal}.lesson-heading{align-items:stretch}.lesson-cards{min-width:70px;max-width:35%}.search-control input,.lesson-control select,.course-control select{height:auto;min-height:48px}.search-control{height:auto;min-height:54px}.lesson-control select,.course-control select{padding-top:10px;padding-bottom:10px}.example-body{min-width:0}}
@media print{.header-preferences{display:none!important}}
/* Speaker-only audio action retains a descriptive accessible name and error text. */
.audio-button,.flash-audio .audio-button,.word-detail-actions .audio-button{display:inline-flex;align-items:center;justify-content:center;width:48px;height:48px;min-width:48px;min-height:48px;padding:10px}.audio-button svg{display:block;width:26px;height:26px;stroke:currentColor;fill:none;stroke-width:1.8}.audio-button[aria-pressed="true"] svg rect{fill:currentColor;stroke:none}.word-detail-actions .word-audio{display:flex;align-items:center;flex-wrap:wrap;gap:8px}.audio-status{max-width:100%}
h1,.brand,.results-meta,.lesson-cards{overflow-wrap:anywhere}.results-meta{flex-wrap:wrap}.results-meta>*{min-width:0}.brand>span:last-child{min-width:0}.source-line{min-width:0}.source-line span{min-width:0;overflow-wrap:anywhere}
.workspace-topline,.utility-actions{flex-wrap:wrap}.workspace-topline>*{min-width:0}.utility-actions{max-width:100%;gap:10px}.text-button{overflow-wrap:anywhere}
.audio-provenance{display:block;font-size:.75rem;line-height:1.5;color:var(--muted);margin-top:6px;overflow-wrap:anywhere}
/* A single action row on word detail and on BOTH learning-card sides. */
.card-actions{display:grid;grid-template-columns:48px minmax(0,max-content);gap:8px 12px;align-items:center;justify-content:center;margin:16px 0;max-width:100%}
.card-actions .word-audio,.card-actions .flash-audio,.card-actions .flash-components{display:contents}
.card-actions .audio-button{grid-column:1;grid-row:1;margin:0}.card-actions .component-open{grid-column:2;grid-row:1;margin:0;min-height:48px;overflow-wrap:anywhere;white-space:normal}
.card-actions .audio-status{grid-column:1 / -1;grid-row:2;margin:0;font-size:.8125rem;line-height:1.5;text-align:center}.card-actions .audio-status:empty{display:none}
.card-actions .audio-provenance{grid-column:1 / -1;grid-row:3;margin:0;text-align:center}.audio-button:disabled{opacity:.45;cursor:not-allowed}
html[data-modal-locked]{overscroll-behavior:none}.word-detail-dialog,.flash-dialog,.component-dialog{overscroll-behavior:contain;touch-action:pan-y pinch-zoom;-webkit-overflow-scrolling:touch}