:root{--paper:#f6f5f0;--white:#fffefa;--ink:#263b37;--muted:#6e7770;--green:#29594c;--soft:#e5eee8;--line:#dedfd5;--rust:#b76742;--warn:#fff1df;--red:#923d37}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:"Segoe UI","Microsoft YaHei UI","PingFang SC",sans-serif;line-height:1.8;font-size:15px}button,input,textarea,select{font:inherit}button,a,input,textarea,select{outline-offset:4px}button{cursor:pointer}a{color:var(--green);text-decoration:none}a:hover{text-decoration:underline}button:disabled{opacity:.4;cursor:default}button{border:1px solid var(--line);background:var(--white);border-radius:8px;padding:8px 15px;color:var(--ink)}button:hover{border-color:var(--green)}.primary{background:var(--green);color:white;border-color:var(--green)}.quiet{border-color:transparent;background:transparent;padding:5px 9px}.sidebar{width:270px;position:fixed;inset:0 auto 0 0;padding:30px 20px 18px;border-right:1px solid var(--line);background:#eeefe7;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-size:20px;font-weight:600}.brand:hover{text-decoration:none}.brand-symbol{font-family:Georgia,serif;font-size:45px;color:var(--green);line-height:1;border:1px solid #bdc7b8;border-radius:50%;width:51px;height:51px;display:grid;place-items:center;padding-bottom:7px}.brand small{display:block;font-size:9px;letter-spacing:1.5px;font-weight:500;color:var(--muted);margin-top:3px}.side-label{margin:35px 6px 12px;color:var(--muted);font-size:11px;font-weight:600;display:flex;justify-content:space-between}.side-label span{font-size:9px;letter-spacing:.5px}.search-box{display:flex;gap:6px;align-items:center;background:#f9faf4;border:1px solid var(--line);border-radius:7px;padding:4px 10px}.search-box input{width:100%;border:0;background:transparent;font-size:12px;padding:4px 0;min-width:0;color:var(--ink)}#lesson-nav{flex:1;overflow:auto;margin-top:15px;scrollbar-width:thin}.lesson-link{display:flex;gap:12px;align-items:flex-start;padding:11px 10px;border-radius:8px;margin-bottom:3px;color:var(--muted);line-height:1.55}.lesson-link:hover{text-decoration:none;background:#e4e8dc}.lesson-link.active{background:var(--green);color:#fff}.lesson-num{font-size:11px;letter-spacing:.4px;min-width:20px;padding-top:3px}.lesson-name{font-size:12px;font-weight:500}.lesson-name small{display:block;opacity:.7;font-size:10px;font-weight:400;margin-top:3px}.side-bottom{padding:15px 4px 0;border-top:1px solid var(--line);font-size:11px}.side-bottom .quiet{font-size:12px;padding:3px 0;width:100%;text-align:left;display:flex;justify-content:space-between}.side-bottom a{display:block;margin-top:10px}.side-bottom p{font-size:10px;color:var(--muted);margin-bottom:0}main{margin-left:270px}.topbar{height:68px;padding:0 38px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted)}.topbar button{font-size:11px}.page-shell{max-width:1140px;margin:auto;padding:36px 42px 20px}.eyebrow{font-size:10px;letter-spacing:2px;font-weight:600;color:var(--rust);margin:0 0 9px}h1{font-size:30px;font-weight:600;line-height:1.4;margin:6px 0 12px;letter-spacing:-.6px}h2{font-size:23px;font-weight:600;line-height:1.5;margin:0 0 15px}h3{font-size:17px;margin:24px 0 12px}.subtle{color:var(--muted);font-size:13px}.hero-meta{display:flex;gap:12px;align-items:center;flex-wrap:wrap;font-size:11px;color:var(--muted)}.tag{background:var(--soft);color:var(--green);padding:2px 9px;border-radius:30px;font-size:10px}.hero-layout{display:flex;justify-content:space-between;gap:20px;align-items:center}.unit-mark{font-family:Georgia,serif;font-size:78px;color:#d4dbcd;line-height:1}.steps{display:flex;gap:3px;flex-wrap:wrap;border-bottom:1px solid var(--line);margin:28px 0}.steps button{border:0;border-radius:0;font-size:12px;padding:10px 12px;background:transparent;border-bottom:2px solid transparent}.steps button.active{color:var(--green);border-bottom-color:var(--green);font-weight:700}.panel{background:var(--white);border:1px solid var(--line);border-radius:12px;padding:28px 32px;margin:18px 0}.panel p{margin:10px 0 18px}.map-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:20px}.goal-list{list-style:none;padding:0;margin:15px 0}.goal-list li{display:flex;gap:14px;border-bottom:1px solid #ecece3;padding:12px 0;font-size:14px}.goal-list li:last-child{border:0}.goal-index{font-family:Georgia,serif;color:var(--rust);font-size:17px}.note{padding:16px 20px;background:var(--soft);border-left:3px solid #809f8b;border-radius:0 7px 7px 0;font-size:13px;margin:20px 0}.note.warm{background:var(--warn);border-color:#ce9b61}.note p:last-child{margin-bottom:0}.section-label{font-size:11px;letter-spacing:1px;color:var(--rust);font-weight:700;display:flex;align-items:center;gap:12px;margin:20px 0 12px}.section-label:after{content:"";height:1px;flex:1;background:var(--line)}.card-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.micro-track{display:flex;gap:5px}.micro-track button{width:25px;height:5px;border-radius:8px;padding:0;background:var(--line);border:0}.micro-track button.active{background:var(--rust)}.micro-track button.attempted{background:#85a58d}.micro-header{margin-bottom:20px}.why{color:var(--green);font-size:16px;font-weight:500}.examples{display:grid;gap:9px;padding:20px;background:#f2f3eb;border-radius:9px}.example{font-size:17px;font-family:Georgia,"Microsoft YaHei",serif;letter-spacing:.15px;line-height:1.7}.practice{padding-top:7px}.question{margin:15px 0 23px}.question label{display:block;font-size:14px;font-weight:500;margin-bottom:8px}.answer-row{display:flex;gap:9px;align-items:stretch}.answer-row input{background:white;border:1px solid #c9d1c7;border-radius:7px;min-width:0;flex:1;padding:8px 12px;font-size:16px;color:var(--ink)}.feedback{font-size:13px;padding:10px 14px;background:var(--soft);border-radius:6px;margin-top:10px}.feedback.wrong{background:#f8ebe5;color:#783f33}.answer-reference{margin:10px 0;font-size:13px}.error-type{margin-top:10px}.error-type select{font-size:12px;padding:3px 6px;border:1px solid var(--line);border-radius:5px;max-width:100%}.card-bottom{display:flex;justify-content:space-between;gap:15px;align-items:center;padding-top:23px;border-top:1px solid var(--line);margin-top:28px}.card-bottom .subtle{font-size:11px}details{margin:14px 0}summary{cursor:pointer;color:var(--green);font-size:13px}details[open] summary{margin-bottom:12px}.reading-quote{font-family:Georgia,serif;font-size:21px;background:#f1f2e9;border-left:3px solid var(--rust);padding:20px 23px;line-height:1.8;margin:20px 0;white-space:pre-wrap}.writing{width:100%;min-height:145px;padding:15px;border:1px solid #cad2c8;border-radius:7px;background:#fff;resize:vertical;line-height:1.8;color:var(--ink)}.actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:15px 0}.actions label{font-size:12px}.actions select,.source-controls select,.source-controls input{padding:6px 9px;border:1px solid var(--line);border-radius:6px;background:var(--white)}.source-controls{display:flex;align-items:center;flex-wrap:wrap;gap:9px;font-size:12px;margin:12px 0 20px}.source-controls input{width:85px}.source-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}.source-image{width:100%;display:block;cursor:zoom-in;border:1px solid var(--line);border-radius:6px}.ocr-text{white-space:pre-wrap;overflow-wrap:anywhere;font-family:"Segoe UI","Microsoft YaHei",sans-serif;font-size:13px;line-height:1.8;margin:0;padding:18px;background:#fff;max-height:78vh;overflow:auto;border:1px solid var(--line);border-radius:6px}.source-grid.text-only{grid-template-columns:1fr}.source-summary{margin:15px 0;color:var(--muted);font-size:11px}.link-grid{display:flex;gap:10px;flex-wrap:wrap;font-size:12px}.link-grid a{background:var(--soft);padding:5px 10px;border-radius:5px}.review-row{padding:14px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;font-size:13px}.review-row small{display:block;color:var(--muted)}.evidence-list{max-height:350px;overflow:auto}.empty{padding:30px;color:var(--muted);text-align:center}.status-select{font-size:13px;padding:8px;border:1px solid var(--line);border-radius:7px;width:100%;margin-top:14px}.stats{display:flex;gap:30px;margin:18px 0 25px}.stats strong{display:block;font-family:Georgia,serif;font-size:31px;color:var(--green)}.stats small{font-size:11px;color:var(--muted)}footer{font-size:10px;color:#8a8e82;text-align:center;margin:38px 0 0}#storage-warning{background:var(--warn);padding:10px 30px;font-size:12px}#toast{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);background:var(--ink);color:white;padding:12px 22px;border-radius:8px;z-index:10;font-size:13px;max-width:90vw}.mobile-only{display:none}.intro-small{font-size:12px;color:var(--muted)}.source-banner{font-size:11px;color:#896244;background:#f5eadb;padding:7px 12px;border-radius:6px}.stage-hint{color:var(--muted);font-size:12px;margin-top:0}.progress-line{height:3px;background:#e4e6dd;border-radius:4px;margin-top:15px}.progress-line span{height:100%;display:block;background:var(--green);border-radius:4px}.icon-pair{font-family:Georgia,serif;font-size:35px;color:var(--rust)}.path-item{padding:9px 0;font-size:13px;border-bottom:1px solid var(--line)}.path-item:last-child{border:0}.path-item strong{color:var(--rust);font-size:11px;margin-right:10px}.read-question{padding-left:22px}.read-question li{padding:7px 0}.checklist{display:grid;gap:12px;font-size:13px}.checklist label{display:flex;gap:9px;align-items:baseline}.checklist input{accent-color:var(--green)}.source-solo{font-size:11px}.bad-format{color:var(--red)}.search-empty{font-size:12px;color:var(--muted);padding:10px}.count-tip{font-size:11px;margin-left:auto}.danger{color:var(--red)}@media(min-width:1500px){.page-shell{padding-top:48px}}@media(max-width:1100px){.sidebar{width:230px}main{margin-left:230px}.page-shell{padding:25px 25px}.panel{padding:23px}.topbar{padding:0 23px}.map-grid{gap:14px}.steps button{padding:9px 8px;font-size:11px}h1{font-size:26px}}@media(max-width:780px){.sidebar{display:none;width:270px;box-shadow:10px 0 30px #0002}.sidebar.open{display:flex}main{margin:0}.mobile-only{display:block}.topbar{padding:0 12px;height:58px}.topbar>span{display:none}.topbar>div{margin-left:auto}.page-shell{padding:22px 16px}.map-grid,.source-grid{grid-template-columns:1fr}.panel{padding:20px 18px}.unit-mark{font-size:58px}h1{font-size:24px}.hero-layout{gap:8px}.steps{gap:0;margin:22px 0}.steps button{padding:9px 8px}.answer-row{flex-wrap:wrap}.answer-row input{min-width:130px}.reading-quote{font-size:18px;padding:16px}.card-bottom{flex-wrap:wrap}.ocr-text{max-height:55vh}.stats{gap:22px}}

.topbar>div{display:flex;align-items:center;gap:2px}.topbar form{margin:0}.topbar [hidden]{display:none!important}#sync-status{font-size:11px;max-width:210px}
/* Bilingual reading keeps each paragraph and its translation together. */
.reading-tabs{display:flex;gap:10px;flex-wrap:wrap;margin:16px 0 20px}.reading-tabs button{flex:1;min-width:220px;text-align:left;line-height:1.5;padding:13px 16px}.reading-tabs button span{display:block;font-size:11px;color:var(--muted,#6b776d);margin-bottom:4px}.reading-tabs button.active{border-color:#315f50;background:#edf2e8;color:#244e40}.reading-toolbar{display:flex;align-items:center;gap:12px;flex-wrap:wrap;padding-bottom:22px;margin-bottom:25px;border-bottom:1px solid #dde2d8}.reading-toolbar a{font-size:12px}.reading-subtitle{margin-top:-8px;color:#697669}.source-caution{font-size:13px;margin:12px 0}.parallel-text{margin:28px 0 36px}.parallel-paragraph{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;padding:24px 0;border-bottom:1px solid #e2e5dc}.paragraph-number{font:12px/2.2 Georgia,serif;color:#9b8066}.reading-spanish{font-family:Georgia,'Times New Roman',serif;font-size:18px;line-height:1.95;overflow-wrap:anywhere;color:#294637}.reading-translation{font-size:14px;line-height:1.95;color:#626f61;border-left:2px solid #bcccb4;padding:6px 0 6px 16px;margin-top:18px;overflow-wrap:anywhere}.reading-translation[hidden]{display:none}.translation-label{display:block;font-size:10px;letter-spacing:2px;color:#8b785f;margin-bottom:7px}.sentence-notes{padding-top:12px}.sentence-note{margin:12px 0;border:1px solid #dce3d7;border-radius:9px;padding:0}.sentence-note summary{display:flex;align-items:flex-start;gap:12px;padding:17px;cursor:pointer;font:16px/1.7 Georgia,serif;overflow-wrap:anywhere}.sentence-note[open] summary{background:#f1f4ed;border-radius:9px 9px 0 0}.sentence-number{font:12px/2.2 system-ui;color:#96775a;flex-shrink:0}.sentence-body{padding:4px 20px 22px}.sentence-meaning{color:#596d58}.sentence-body dl{background:#f5f6f0;padding:15px 18px;border-radius:6px;font-size:13px;line-height:1.9}.sentence-body dt{font-size:11px;color:#92775e;margin-top:8px}.sentence-body dt:first-child{margin-top:0}.sentence-body dd{margin:3px 0 12px;overflow-wrap:anywhere}.sentence-body dd:last-child{margin-bottom:0}.reading-extra{margin:28px 0}.reading-extra summary{cursor:pointer;color:#5f715c}.reading-panel h3{margin-top:30px}@media(max-width:650px){.reading-tabs button{min-width:100%;font-size:14px}.parallel-paragraph{grid-template-columns:22px minmax(0,1fr);gap:8px;padding:20px 0}.reading-spanish{font-size:17px}.reading-toolbar{gap:9px}.reading-toolbar a{width:100%;order:3}.sentence-note summary{padding:12px}.sentence-body{padding:4px 13px 18px}.reading-translation{padding-left:11px}}
.reading-spanish .reading-verb{display:inline;font:inherit;line-height:inherit;color:#354e32;background:transparent;border:0;border-bottom:1px solid #81956c;border-radius:0;padding:0 1px;margin:0;cursor:pointer;box-shadow:none;vertical-align:baseline;text-align:inherit}
.reading-spanish .reading-verb.participle{border-bottom-style:dashed;color:#68674c}
.reading-spanish .reading-verb:hover,.reading-spanish .reading-verb:focus-visible{background:#e7edda;outline:2px solid #84956c;outline-offset:2px}
.verb-dialog{box-sizing:border-box;width:min(600px,calc(100vw - 28px));max-height:calc(100dvh - 40px);overflow:auto;border:1px solid #c7cdb9;border-radius:16px;padding:25px;background:#faf9f2;color:#293027;box-shadow:0 18px 80px #16220e44}
.verb-dialog::backdrop{background:#17211488}
.verb-dialog-top{display:flex;align-items:center;justify-content:space-between;gap:12px}.verb-dialog-top .eyebrow{margin:0}.verb-dialog-top button{flex-shrink:0}
.verb-dialog h2{font-family:Georgia,serif;font-size:34px;margin:14px 0}.verb-dialog p{line-height:1.8}.verb-dialog .note p{margin:8px 0 0}
.verb-facts{display:grid;grid-template-columns:80px 1fr;gap:12px;margin:18px 0}.verb-facts dt{color:#737967;font-size:13px}.verb-facts dd{margin:0;overflow-wrap:anywhere}.verb-facts small{color:#737967}
.verb-context{font-family:Georgia,serif;line-height:1.8;border-left:3px solid #bccaa1;margin:20px 0;padding:4px 0 4px 15px;white-space:pre-line}.verb-context mark{background:#e2eacb;padding:2px 3px}
@media(max-width:650px){.verb-dialog{padding:18px}.verb-facts{grid-template-columns:65px 1fr;gap:10px}.reading-spanish .reading-verb{padding:1px}}
.volume-links{display:flex;gap:15px;padding:0 0 18px;font-size:12px}.volume-links a{color:#6b795a;text-underline-offset:4px}