:root{--bg:#f5f4ef;--paper:#fff;--ink:#223b34;--muted:#728079;--line:#e2e7df;--green:#254e45;--light:#edf3ed;--lime:#d7e7b4;--orange:#ba663a;--shadow:0 8px 30px #1e342706;--radius:18px;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-size:15px;line-height:1.65}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{ -webkit-tap-highlight-color:transparent}a{color:var(--green);text-decoration:none}button{cursor:pointer;border:1px solid var(--line);background:white;color:var(--ink);padding:9px 16px;border-radius:10px;line-height:1.5;transition:background .15s,transform .15s}button:hover{background:var(--light)}button:disabled{cursor:default;opacity:.65}button.primary,.button{background:var(--green);color:white;border-color:var(--green)}button.primary:hover,.button:hover{background:#193f36}button.text{background:none;border:0;padding:4px 0;color:var(--green)}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #c18339;outline-offset:3px}h1,h2,h3,p{margin-top:0}h1{font-size:32px;line-height:1.3;letter-spacing:-1px;margin-bottom:12px}h2{font-size:21px;line-height:1.5;margin-bottom:18px}h3{font-size:17px;margin-bottom:8px}p{margin-bottom:14px}small,.small{font-size:12px}.muted{color:var(--muted)}.eyebrow{font-size:11px;letter-spacing:1.7px;font-weight:600}.skip{position:absolute;left:-999px;top:5px;z-index:99;background:white;padding:12px}.skip:focus{left:5px}.sidebar{position:fixed;inset:0 auto 0 0;width:248px;background:#fcfcf8;border-right:1px solid var(--line);padding:35px 23px 24px;display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:12px;font-weight:650;font-size:22px;line-height:1.35}.brand small{display:block;font-size:8px;letter-spacing:1.7px;margin-top:4px;color:#829085}.logo{display:grid;place-items:center;width:43px;height:46px;background:var(--green);color:var(--lime);border-radius:14px 14px 14px 3px;font-family:serif;font-size:24px}.profile{padding:34px 6px 26px}.profile .eyebrow{color:#899585;font-size:10px;letter-spacing:1px}.profile p{font-size:13px;font-weight:550;margin:8px 0 3px}.profile small{color:var(--muted)}nav{display:flex;flex-direction:column;gap:7px}nav a{padding:11px 13px;border-radius:10px;color:#68756e;font-size:14px;display:flex;align-items:center;gap:11px}nav a>span{font-size:19px;width:23px;text-align:center}nav a.active{background:#eaf0e5;color:#254e45;font-weight:650}nav b{margin-left:auto;font-size:11px;background:var(--green);color:white;padding:0 6px;border-radius:5px}nav b:empty{display:none}.sidebar-note{margin-top:auto;padding:18px 6px 0;color:#79877b;font-size:10px}.online-dot{display:inline-block;width:6px;height:6px;background:#8fa777;border-radius:50%;margin-right:4px}.sidebar-note p{font-family:serif;font-size:19px;color:#617064;line-height:1.7;margin:20px 0 13px}.sidebar-note a{font-size:11px}.shell{margin-left:248px}.topbar{height:77px;border-bottom:1px solid var(--line);padding:0 42px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:12px}main{max-width:1250px;margin:auto;padding:35px 42px 25px;min-height:76vh}footer{text-align:center;color:#8c958b;font-size:11px;line-height:1.8;padding:24px 25px 35px}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:24px}.page-heading p{margin:0;color:var(--muted);font-size:13px}.page-heading h1{margin-bottom:8px}.date-controls{display:flex;align-items:center;gap:7px;flex-wrap:wrap}.date-controls input{max-width:150px;border:1px solid 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.notes-card{grid-column:auto}.card{padding:18px}.grid-2,.grid-3{grid-template-columns:1fr}.calendar-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.calendar-day{padding:13px}.calendar-day.selected{padding:12px}.calendar-day .date{font-size:10px}.calendar-day h3{font-size:12px;margin:9px 0}.calendar-day p{font-size:10px}.number-stat{padding:14px}.number-stat strong{font-size:25px}.stats-row{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.number-stat small{font-size:10px}.number-stat p{font-size:9px}.filters{gap:6px}.filters button{padding:6px 10px;font-size:11px}#readerBody{padding:22px 20px 30px}#readerBody h2{font-size:21px}#readerBody p{font-size:13px}.dialog-bar{padding:11px 15px}.timer{bottom:15px;right:15px;gap:14px;padding:10px 12px 10px 17px}.timer strong{font-size:23px}.timer small{max-width:170px}.timer button{padding:6px 10px}footer{font-size:9px;padding:15px 20px 30px}.toolbar{gap:8px}.notice{font-size:11px}.source-row 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@media(max-width:640px){nav{gap:2px}nav a{padding-inline:7px}}
@media print{body{background:#fff}.sidebar,.shell,.timer,#toast,.dialog-bar{display:none!important}dialog[open]{position:static;border:0;box-shadow:none;max-height:none;width:100%;margin:0;overflow:visible}dialog::backdrop{display:none}#readerBody{padding:0;color:#000}#readerBody p{color:#000}#readerBody textarea{min-height:150px}details{display:none}.rubric{break-inside:avoid}#readerBody h2{font-size:20px}.lesson-step{break-inside:avoid}}