:root{--ink:#183e30;--green:#087d47;--soft:#eaf7eb;--line:#d9e7db;--amber:#f6ba32;--paper:#fffdf7;--muted:#6c7973}*{box-sizing:border-box}body{margin:0;background:#f4f7f2;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;font-size:16px}button,input,textarea,select{font:inherit}button,a{cursor:pointer}button{border:0;background:none;color:inherit;text-align:left}#app{max-width:1488px;min-height:100vh;margin:auto;background:var(--paper);display:grid;grid-template-columns:220px minmax(0,1fr)}#app.login-root{max-width:none;display:block;background:transparent}aside{border-right:1px solid #edf1eb;padding:28px 18px;display:flex;flex-direction:column}.brand{color:var(--ink);text-decoration:none;font-size:20px;padding:8px 12px;margin-bottom:28px}.brand small{display:block;font-size:11px;color:var(--muted);margin-top:4px}nav{display:grid;gap:8px}nav button,.parent-link button{padding:12px;border-radius:9px;font-weight:700;width:100%;font-size:15px}nav button i{font-style:normal;font-size:20px;display:inline-block;width:34px;vertical-align:middle}nav button.active,nav button:hover,.parent-link button:hover{background:#dff3df;color:#0f6740}.parent-link{margin-top:auto}.parent-link small{display:block;color:var(--muted);font-size:12px;line-height:1.6;padding:16px 12px}.workspace{padding:30px 36px 48px;max-width:1268px;width:100%;margin:auto}header{display:flex;justify-content:space-between;gap:20px;align-items:start}header small{color:var(--muted);font-size:13px}h1{font-size:32px;margin:8px 0 4px;letter-spacing:-1px}h2{font-size:25px;margin:10px 0}h3{margin:0 0 12px}h4{margin:14px 0 7px}p{line-height:1.6;color:#456055;margin:5px 0 14px}.outline,.primary{border-radius:8px;padding:11px 20px;font-weight:800;display:inline-block;text-align:center}.outline{border:1px solid #82af96;background:#fff;color:#276544}.primary{background:var(--green);color:white;border:1px solid var(--green)}.primary:hover{background:#056938}.block{display:block;margin-top:10px}.link{margin:12px 0;text-decoration:none}.steps{display:grid;grid-template-columns:repeat(4,1fr);margin:22px 0 16px}.steps button{position:relative;text-align:center;color:#81918a;font-size:13px;border-top:3px solid #dfe8e2;padding-top:9px}.steps button b{display:block;margin:-19px auto 6px;background:#eef1ef;border-radius:50%;width:22px;height:22px;padding-top:3px}.steps button.done,.steps button.current{border-color:#69a982;color:#157043;font-weight:800}.steps button.done b,.steps button.current b{background:#147343;color:#fff}.grid{display:grid;gap:18px}.today-grid{grid-template-columns:minmax(0,1.8fr) minmax(260px,.9fr)}article,.lesson,.help-card,.review-detail,.review-list,.config>section{border:1px solid var(--line);border-radius:10px;background:#fff;padding:20px}.lesson{background:linear-gradient(135deg,#eff9ef 0%,#fff 72%)}.lesson small{color:#387b56;font-weight:700}.illustration{font-size:62px;background:#dff1dc;border-radius:8px;text-align:center;padding:18px;margin:12px 0}.question{background:#fff;border:1px solid #e1ede2;border-radius:7px;padding:12px;margin:12px 0}.lesson ol{line-height:2;background:#fff;border-radius:8px;padding:10px 38px}.resource{margin-top:16px}.resource div,.week button,.month button,.parent-grid button{display:flex;justify-content:space-between;gap:8px;width:100%;border-bottom:1px solid #edf1ee;padding:13px 8px}.resource a{color:#127547;font-weight:700}.week{margin-bottom:16px}.week button:first-of-type{background:#e8f7e9;border-radius:7px}.week button b{color:#478764;margin-right:8px}.week button em,.month button em,.parent-grid em{margin-left:auto;color:#6f8979;font-style:normal;font-size:13px}.month{background:#f5fcf4}.month button{font-weight:700}.warning{background:#fff2cd;color:#875a00;border-radius:7px;padding:12px;margin:12px 0;font-size:14px}.notice{background:#dff3df;color:#17633c;border-radius:8px;padding:10px 14px;margin:8px 0 18px}.months{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}.month-tab{padding:14px;text-align:center;border:1px solid var(--line);border-radius:8px;font-weight:700}.month-tab.selected{border-color:#5fa77b;background:#f1fbef}.plan-grid{grid-template-columns:1.6fr .7fr}.week-row{margin-bottom:10px;padding:15px;display:grid;grid-template-columns:240px 1fr;gap:12px}.week-row>div:first-child{display:flex;gap:10px;align-items:center}.week-row>div:first-child>b{background:#e9efeb;border-radius:50%;width:30px;height:30px;padding:6px;text-align:center}.week-row h3{margin:0;font-size:16px}.week-row small{color:var(--muted)}.week-row button{display:flex;width:100%;gap:10px;padding:8px}.week-row button span{font-weight:800;color:#4c8965}.week-row em{margin-left:auto;font-style:normal;color:#9b741f;font-size:12px}.side-card{height:max-content;background:#fbfdf9}.map-layout,.help-layout,.review-layout,.parent-grid,.config{display:grid;grid-template-columns:1.35fr .8fr;gap:18px;margin-top:20px}.timeline{position:relative}.timeline button{display:flex;width:100%;gap:15px;padding:15px;border:1px solid var(--line);border-radius:9px;margin:8px 0;background:#fff}.timeline button>b{background:#e6ede8;width:30px;height:30px;border-radius:50%;padding:6px;text-align:center}.timeline button.review{background:#fff9e9;border-color:#f4ca65}.timeline button.learning{background:#f1fbef}.timeline button em{margin-left:auto;font-style:normal;font-size:13px;color:#5a876c}.timeline small{display:block;color:var(--muted);margin-top:5px}.detail-card small,.review-detail small{display:block;color:var(--muted);font-size:12px;margin-top:15px}.help-card label,.config label{display:block;font-weight:700;margin-bottom:14px}.help-card textarea,.config input,.config select,.config textarea,textarea,select{width:100%;border:1px solid #cfdbd2;border-radius:7px;padding:10px;margin-top:6px;background:#fff}.help-card textarea{min-height:85px}.levels{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin:16px 0}.levels button{border:1px solid #dde7de;border-radius:7px;padding:12px;font-weight:700;text-align:center}.levels button.selected{background:#e6f6e6;color:#137143}.hint-result{background:#eff9ef;border-radius:9px;padding:16px}.review-list{display:grid;gap:8px}.review-list button{border-bottom:1px solid #edf1ed;padding:15px;display:grid;grid-template-columns:1fr auto}.review-list button strong{grid-column:1/2}.review-list button span{color:var(--muted);font-size:13px;margin-top:5px}.review-list button em{grid-column:2;grid-row:1/3;align-self:center;font-style:normal;color:#357b52}.empty{padding:35px 10px;color:var(--muted);text-align:center}.review-detail form{margin-top:20px}.review-detail textarea{min-height:65px}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;background:#edfaec;border-radius:10px;padding:15px;margin:20px 0}.stats div{border-right:1px solid #cde5ce;padding-left:15px;font-size:20px;color:#23834e}.stats div:last-child{border:0}.stats b{font-size:26px;margin-left:8px}.stats small{display:block;font-size:13px;color:#466356;margin-top:4px}.parent-grid button{font-weight:700}.amber{color:#a87002!important}.config{margin-top:22px;grid-template-columns:1fr 1fr}.config form{display:grid;gap:8px}.config .check{font-size:14px;font-weight:400}.config .check input{width:auto}.days{display:flex;gap:7px;flex-wrap:wrap}.days label{background:#edf2ee;padding:9px;border-radius:6px;font-size:14px}.days input{width:auto;accent-color:var(--green)}fieldset{border:0;padding:0;margin:12px 0}legend{font-weight:800;margin-bottom:8px}fieldset label{display:inline-block!important;background:#fafcf9;border:1px solid var(--line);padding:9px;margin:3px 2px!important;border-radius:6px;font-weight:400!important}fieldset input{width:auto}@media(max-width:700px){#app{grid-template-columns:1fr}#app>aside{flex-direction:row;padding:10px;border-bottom:1px solid var(--line);border-right:0;align-items:center;overflow:auto}.brand{margin:0;white-space:nowrap;padding:6px}.brand small,.parent-link{display:none}nav{display:flex;gap:3px}nav button{white-space:nowrap;padding:9px}nav button i{display:none}.workspace{padding:22px 16px}.today-grid,.plan-grid,.map-layout,.help-layout,.review-layout,.parent-grid,.config{grid-template-columns:1fr}.week-row{grid-template-columns:1fr}.steps{grid-template-columns:repeat(2,1fr);gap:18px}.months{grid-template-columns:1fr}h1{font-size:27px}header{display:block}header .outline{margin-top:8px}}@media(max-width:520px){.stats{grid-template-columns:1fr}.stats div{border-right:0;border-bottom:1px solid #cde5ce;padding:8px}.stats div:last-child{border-bottom:0}.levels{grid-template-columns:1fr}.workspace{padding:15px}.lesson,.review-detail,.review-list,.config>section{padding:15px}}
.optional{margin-top:18px;padding-top:16px;border-top:1px dashed #9cc9aa}.optional small{color:#387b56;font-weight:700}.optional h3{margin:7px 0}.optional details{background:#f9fcf8;border:1px solid var(--line);border-radius:8px;padding:10px 12px;margin-top:8px}.optional summary{cursor:pointer;font-weight:700}.optional .choices{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}.optional .choices .outline{font-size:14px;padding:8px 12px}.optional #extra-result-0,.optional #extra-result-1{font-size:14px}.optional #extra-result-0 small,.optional #extra-result-1 small{display:block;margin-top:5px;color:#537061;font-weight:400}
.account{margin-top:auto;padding:14px 10px;display:grid;gap:6px}.account small{color:var(--muted);font-size:12px}.account .outline{text-align:center;padding:8px 10px}.login-page{min-height:100vh;display:grid;place-items:center;padding:24px;background:linear-gradient(135deg,#eaf7eb,#fffdf7)}.login-card{width:min(100%,410px);padding:36px;border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:0 18px 50px #1a553018;text-align:center}.login-mark{font-size:44px}.login-card h1{margin:6px 0}.login-card form{text-align:left;display:grid;gap:14px;margin:24px 0 16px}.login-card label{display:grid;gap:7px;font-weight:700}.login-card input{width:100%;border:1px solid #cfdbd2;border-radius:7px;padding:11px;background:#fff}.login-card button{width:100%;text-align:center}.login-card>small{display:block;color:var(--muted);line-height:1.55}.auth-notice{text-align:left;margin:12px 0}

/* learning-device-and-ipad */
.login-page{padding:48px}.login-card{width:min(100%,540px);padding:44px 48px;border-radius:20px}.login-mark{font-size:56px}.login-card h1{font-size:38px}.login-card p{font-size:18px}.login-card form{gap:18px;margin:30px 0 18px}.login-card input{min-height:52px;padding:13px}.login-card .primary{min-height:54px;font-size:18px}
@media (min-width:701px) and (max-width:1100px){#app:not(.login-root){grid-template-columns:188px minmax(0,1fr)}#app:not(.login-root)>aside{flex-direction:column;padding:24px 14px;border-right:1px solid var(--line);border-bottom:0;align-items:stretch;overflow:visible}#app:not(.login-root) .brand{margin:0 0 24px;padding:8px}#app:not(.login-root) .brand small,#app:not(.login-root) .parent-link{display:block}#app:not(.login-root) nav{display:grid;gap:8px}#app:not(.login-root) nav button{white-space:normal;padding:12px}#app:not(.login-root) nav button i{display:inline-block}#app:not(.login-root) .workspace{padding:30px 28px}#app:not(.login-root) .today-grid,#app:not(.login-root) .plan-grid,#app:not(.login-root) .map-layout,#app:not(.login-root) .help-layout,#app:not(.login-root) .review-layout,#app:not(.login-root) .parent-grid,#app:not(.login-root) .config{grid-template-columns:1fr}#app:not(.login-root) .steps{grid-template-columns:repeat(4,1fr);gap:0}#app:not(.login-root) .months{grid-template-columns:repeat(3,1fr)}}
@media(max-width:700px){.login-page{padding:20px}.login-card{padding:30px 24px}.login-card h1{font-size:31px}.login-card p{font-size:16px}}