@charset "UTF-8";
:root{--bg:#f5f5f0;--paper:#fff;--ink:#183c34;--text:#30473f;--muted:#6c7a73;--green:#216b58;--soft:#edf3ec;--line:#e2e7df;--accent:#d7ad65;--red:#9d483c;--radius:18px;--shadow:0 8px 28px rgba(33,63,49,.035)}
*{box-sizing:border-box}body{margin:0;color:var(--text);background:var(--bg);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Microsoft YaHei","PingFang SC",sans-serif;font-size:15px;line-height:1.75}button,input,textarea,select{font:inherit}button,a,input,textarea,select{-webkit-tap-highlight-color:transparent}button,a{touch-action:manipulation}a{color:var(--green);text-decoration:none}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.5}a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid #d7ad65;outline-offset:4px}h1,h2,h3,h4,p{margin-top:0}h1,h2,h3,h4{color:var(--ink);line-height:1.4;letter-spacing:-.02em}h1{font-size:30px;font-weight:700;margin-bottom:10px}h2{font-size:22px;margin-bottom:20px}h3{font-size:17px;margin-bottom:12px}p{margin-bottom:14px}small{font-size:12px}.skip{position:fixed;top:-80px;left:20px;z-index:10;padding:10px;background:white}.skip:focus{top:12px}.sidebar{width:246px;position:fixed;inset:0 auto 0 0;padding:32px 23px;background:#fafbf7;border-right:1px solid var(--line);display:flex;flex-direction:column;z-index:5}.brand{display:flex;align-items:center;gap:11px;color:var(--ink);font-size:15px;font-weight:700;line-height:1.5;margin-bottom:49px}.brand small{display:block;font-weight:400;font-size:11px;color:var(--muted);letter-spacing:.07em;margin-top:3px}.brand-icon{background:var(--green);color:#fff;display:grid;place-items:center;border-radius:11px;width:41px;height:43px;font-size:22px}.nav-label{font-size:11px;color:#8c9890;letter-spacing:.15em;margin:0 0 14px 14px}nav{display:grid;gap:7px}nav a{display:flex;align-items:center;gap:13px;border-radius:9px;padding:11px 15px;color:#63766a;font-size:14px;transition:background .15s}nav a:hover{background:#f0f3ec}nav a.active{color:var(--ink);background:#e8efe3;font-weight:600}nav a>span{width:20px;font-size:20px;line-height:1}.side-bottom{margin-top:auto;padding:27px 12px 0;border-top:1px solid var(--line)}.eyebrow{font-size:11px;letter-spacing:.12em;color:var(--muted);text-transform:uppercase}.side-progress{display:flex;align-items:center;justify-content:space-between;margin:9px 0}.side-progress strong{font-size:25px;color:var(--ink)}.side-progress span,.side-bottom p{font-size:12px;color:var(--muted)}.side-bottom p{line-height:1.8;margin:12px 0 20px}.progress-track{height:6px;background:#e1e7dc;border-radius:8px;overflow:hidden}.progress-track>div{height:100%;background:var(--green);border-radius:8px;transition:width .2s}.local-tag{font-size:11px;color:var(--green);letter-spacing:.04em}.app{margin-left:246px}.topbar{height:82px;display:flex;align-items:center;justify-content:space-between;padding:0 46px;border-bottom:1px solid var(--line);background:rgba(250,251,247,.8);font-size:12px}.breadcrumb{color:var(--muted)}.slash{color:#bec8bc;margin:0 13px}.topbar strong{font-weight:500}.top-meta{display:flex;gap:22px;align-items:center;color:var(--muted)}main{max-width:1320px;min-height:calc(100vh - 150px);padding:36px 46px 48px;margin:auto}footer{padding:12px 46px 25px;color:#7a897f;font-size:11px;text-align:center}.page-intro{display:flex;align-items:flex-start;justify-content:space-between;gap:20px;margin-bottom:26px}.page-intro p{font-size:14px;color:var(--muted);margin:0}.label{color:var(--green);font-size:11px;letter-spacing:.15em;display:block;margin-bottom:8px}.btn{border:1px solid var(--line);border-radius:8px;background:var(--paper);padding:10px 18px;color:var(--ink);font-size:13px;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:10px;line-height:1.5;transition:background .15s,transform .15s;text-align:center}.btn:hover{background:#f0f4ec}.btn.primary{color:white;background:var(--green);border-color:var(--green)}.btn.primary:hover{background:#195643}.btn.small{padding:7px 12px;font-size:12px}.btn.ghost{background:transparent}.btn.danger{color:var(--red)}.actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.hero{position:relative;display:grid;grid-template-columns:1.7fr 1fr;background:var(--ink);color:#e1e9de;border-radius:var(--radius);overflow:hidden;min-height:275px;gap:25px;padding:36px 38px;margin-bottom:24px}.hero .label{color:#abc3ae}.hero h2{color:#fff;font-size:32px;margin:12px 0 12px;line-height:1.4}.hero p{font-size:13px;line-height:1.9;color:#c1d2c4;max-width:480px;margin-bottom:22px}.hero .btn.primary{background:#e3c998;border-color:#e3c998;color:#244a3e}.hero .btn.ghost{border-color:#527566;color:#edf2e9}.hero-right{display:grid;place-content:center;gap:16px;text-align:center;border-left:1px solid #3c5d50}.ring{width:139px;height:139px;border-radius:50%;background:conic-gradient(#e3c998 calc(var(--pct)*1%),#3c5d50 0);display:grid;place-items:center;position:relative;margin:auto}.ring:before{content:'';position:absolute;inset:7px;border-radius:50%;background:var(--ink)}.ring div{position:relative;color:#fff}.ring strong{font-size:34px;line-height:1.2;display:block;font-weight:500;font-variant-numeric:tabular-nums}.ring span{font-size:11px;color:#bbd0bc}.hero-right>span{font-size:11px;color:#b5c9ba;letter-spacing:.05em}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:30px}.stat{border:1px solid var(--line);background:var(--paper);border-radius:12px;padding:19px 23px;display:flex;gap:16px;align-items:center}.stat-icon{height:42px;width:42px;display:grid;place-items:center;background:var(--soft);border-radius:11px;color:#6c8a67;font-size:21px}.stat strong{color:var(--ink);font-size:25px;font-weight:600;margin-right:5px}.stat small,.stat p{color:var(--muted);font-size:12px;margin:0}.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px}.section-head h2{font-size:19px;margin:0}.section-head a,.section-head span{font-size:12px}.grid2{display:grid;grid-template-columns:1.6fr 1fr;gap:22px;margin-bottom:30px}.panel{background:var(--paper);border:1px solid var(--line);border-radius:14px;padding:24px;box-shadow:var(--shadow)}.current-lesson{display:grid;grid-template-columns:64px 1fr;gap:18px}.day-badge{width:60px;height:66px;background:var(--soft);border-radius:10px;text-align:center;color:var(--green);line-height:1.2;padding:10px}.day-badge small{font-size:10px;display:block;margin-bottom:4px;letter-spacing:.08em}.day-badge strong{font-size:27px;font-weight:600}.current-lesson h3{margin:0 0 9px}.muted{color:var(--muted);font-size:13px}.current-lesson p{font-size:13px;color:var(--muted);margin-bottom:17px}.pill{background:var(--soft);color:var(--green);font-size:11px;padding:3px 8px;border-radius:5px;display:inline-block;line-height:1.6}.pill.gold{color:#84612e;background:#f6eedb}.quick-link{display:flex;justify-content:space-between;align-items:center;color:var(--ink);padding:12px 0;border-bottom:1px solid var(--line);font-size:13px}.quick-link:last-child{border:0;padding-bottom:0}.quick-link small{color:var(--muted);display:block;margin-top:3px}.flow{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:10px;margin-bottom:32px}.flow-step{padding:18px 10px;background:#e9eee4;border-radius:10px;position:relative;text-align:center}.flow-step b{display:block;color:#789079;font-size:11px;font-weight:500;margin-bottom:8px}.flow-step span{font-size:12px;color:var(--ink)}.flow-step:not(:last-child):after{content:'›';position:absolute;right:-9px;top:37%;z-index:1;color:#9aa98d;font-size:20px}.week-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.week{border-top:3px solid #a9b99b;border-radius:11px;background:var(--paper);padding:21px;border-right:1px solid var(--line);border-left:1px solid var(--line);border-bottom:1px solid var(--line)}.week .label{margin-bottom:12px}.week h3{font-size:15px}.week p{font-size:12px;color:var(--muted);min-height:44px}.week a{font-size:12px}.lesson-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.lesson-card{padding:21px;background:var(--paper);border:1px solid var(--line);border-radius:12px;display:flex;flex-direction:column;gap:12px;color:var(--text)}.lesson-card:hover{border-color:#96b3a0;box-shadow:var(--shadow)}.lesson-card h3{font-size:16px;margin:0}.lesson-card p{font-size:12px;color:var(--muted);margin:0;flex:1}.lesson-card-top{display:flex;align-items:center;justify-content:space-between}.lesson-card .label{margin:0}.lesson-card-bottom{font-size:12px;color:var(--green);display:flex;justify-content:space-between;align-items:center}.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}.filter{border:1px solid var(--line);background:transparent;color:var(--muted);border-radius:7px;padding:8px 14px;font-size:12px}.filter.active{background:var(--ink);color:white;border-color:var(--ink)}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px;align-items:start}.lesson-body .panel{margin-bottom:18px}.lesson-body h2{font-size:20px}.lesson-body p,.lesson-body li{font-size:14px}.points{margin:0;padding-left:22px}.points li{padding:0 0 12px 5px}.points li::marker{color:var(--green);font-weight:600}.lesson-aside{position:sticky;top:20px}.day-list{display:grid;grid-template-columns:repeat(7,1fr);gap:5px;margin-top:18px}.day-link{border-radius:5px;font-size:12px;text-align:center;padding:5px 1px;border:1px solid var(--line);color:var(--muted)}.day-link.done{background:#e8efe2;color:#2b6f48}.day-link.current{background:var(--ink);border-color:var(--ink);color:white}.check-row{display:flex;gap:10px;align-items:flex-start;padding:9px 0;font-size:13px}.check-row input{accent-color:var(--green);width:17px;height:17px;margin-top:4px;flex-shrink:0}.check-row label{cursor:pointer}.quiz-title{color:var(--ink);font-size:15px;line-height:1.8;margin-bottom:15px}.answer-options{display:flex;gap:10px;flex-wrap:wrap}.answer-options button{min-width:88px}.answer-options button.selected{background:var(--ink);color:white;border-color:var(--ink)}.feedback{margin-top:16px;padding:14px 16px;border-radius:8px;font-size:13px;line-height:1.8;background:#edf4e9;color:#375c3c}.feedback.wrong{background:#f8eeea;color:#8a4b3b}.notes-input{width:100%;border:1px solid #d9e2d7;border-radius:8px;padding:12px;background:#fcfdfb;resize:vertical;min-height:110px;color:var(--text);font-size:14px;line-height:1.8}.notes-label{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;gap:15px}.notes-label small{color:var(--muted)}.completion{display:flex;justify-content:space-between;align-items:center;gap:15px;flex-wrap:wrap;padding-top:8px}.completion p{margin:0;color:var(--muted);font-size:12px}.lesson-nav{display:flex;justify-content:space-between;gap:12px;margin-top:22px}.reader-layout{display:grid;grid-template-columns:230px minmax(0,1fr);gap:28px;align-items:start}.reader-menu{position:sticky;top:18px;max-height:82vh;overflow:auto}.reader-menu a{display:block;font-size:12px;color:var(--muted);padding:9px 12px;border-left:2px solid transparent;margin-bottom:3px}.reader-menu a.active{background:#e8efe3;color:var(--green);border-color:var(--green)}.search-box{width:100%;background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:12px 15px;font-size:13px;color:var(--text);margin-bottom:18px}.prose{font-size:14px;line-height:1.95}.prose h1{font-size:26px}.prose h2{font-size:21px;margin:27px 0 16px}.prose h3{font-size:17px;margin:24px 0 12px}.prose h4{font-size:15px;margin:20px 0 10px}.prose p{margin-bottom:16px}.prose ul,.prose ol{padding-left:23px}.prose li{margin-bottom:7px}.prose strong{color:var(--ink)}.prose code{font-family:inherit;background:#f0f3ed;border-radius:3px;padding:2px 5px;overflow-wrap:anywhere}.prose blockquote{margin:16px 0;padding-left:17px;border-left:3px solid #b6c4a9;color:var(--muted)}.prose hr{border:0;border-top:1px solid var(--line);margin:27px 0}.prose a{overflow-wrap:anywhere;text-decoration:underline;text-underline-offset:3px}.table-wrap{overflow-x:auto;margin:16px 0 24px;max-width:100%}table{width:100%;border-collapse:collapse;font-size:12px;line-height:1.75;text-align:left;min-width:480px}th,td{padding:12px 13px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#edf2e8;color:var(--ink);font-weight:600}tbody tr:nth-child(even){background:#fafbf8}.empty{text-align:center;padding:45px 20px;color:var(--muted);font-size:14px}.search-result{display:block;background:var(--paper);border:1px solid var(--line);border-radius:10px;padding:20px;margin-bottom:12px}.search-result h3{margin-bottom:8px}.search-result p{color:var(--muted);font-size:12px;margin:0}.practice-card{margin-bottom:17px}.question-num{color:var(--green);font-size:11px;font-weight:600;letter-spacing:.05em;margin-bottom:10px}.question-why{font-size:13px;color:var(--muted);margin-top:12px}.reveal{margin-top:16px}.answer-body{margin-top:15px;border-top:1px solid var(--line);padding-top:17px}.rubric{display:flex;gap:12px;flex-wrap:wrap;margin-top:15px}.rubric label{font-size:12px;color:var(--muted);display:flex;align-items:center;gap:5px}.rubric input{accent-color:var(--green)}.practice-toolbar{display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:18px}.practice-toolbar p{margin:0;color:var(--muted);font-size:12px}.notebook-entry{margin-bottom:15px}.note-meta{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:12px}.note-meta h3{font-size:15px;margin:0}.note-text{white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px}.status-banner{padding:12px 16px;border-radius:8px;background:#f8eedc;color:#7d5e2d;font-size:12px;margin-bottom:20px}.source-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:25px}.source-item{display:block;padding:13px 0;border-bottom:1px solid var(--line);font-size:13px}.source-item:last-child{border:0}.source-item small{display:block;color:var(--muted);margin-top:3px}.reference-image{width:100%;max-width:856px;height:auto;display:block;margin:20px auto}.source-details summary{cursor:pointer;color:var(--green);padding:10px 0;font-size:14px}.loading{padding:80px;text-align:center}.loading.error{color:var(--red)}#toast{position:fixed;left:calc(50% + 123px);bottom:27px;transform:translateX(-50%);background:var(--ink);color:#fff;border-radius:8px;padding:12px 20px;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .2s;z-index:20;font-size:13px;max-width:85%}#toast.show{opacity:1}.back-link{font-size:12px;display:inline-block;margin-bottom:20px}.lesson-head{margin-bottom:26px}.lesson-head h1{font-size:28px}.lesson-head p{font-size:14px;color:var(--muted)}.week-section{margin-bottom:30px}.week-section>h2{font-size:18px}.stage-summary{font-size:12px;color:var(--muted);font-weight:400;margin-left:12px}.exam-choice{margin-top:18px}.mark-btn{font-size:12px;padding:5px 10px}.bookmark{color:#9a7130}.file-import{display:none}.storage-label{font-size:12px;color:var(--muted);margin-top:14px}.unit-checks{display:flex;gap:14px;flex-wrap:wrap;font-size:12px}.unit-checks input{accent-color:var(--green)}
@media(min-width:1500px){main{padding-top:44px}.hero{min-height:300px}.hero h2{font-size:35px}}
@media(max-width:1150px){.sidebar{width:210px;padding:27px 17px}.app{margin-left:210px}main{padding:28px 26px}.topbar{padding:0 26px}.brand{font-size:13px}.brand-icon{width:35px;height:37px}.week-grid{grid-template-columns:repeat(2,1fr)}.lesson-grid{grid-template-columns:repeat(2,1fr)}.hero{padding:30px;grid-template-columns:1.6fr 1fr}.hero h2{font-size:28px}.lesson-layout{grid-template-columns:minmax(0,1fr) 225px}.reader-layout{grid-template-columns:185px minmax(0,1fr)}#toast{left:calc(50% + 105px)}}
@media(max-width:850px){.sidebar{width:180px;padding:24px 12px}.app{margin-left:180px}.brand{gap:8px;font-size:12px}.brand-icon{width:32px;height:35px;font-size:18px}.brand small{font-size:9px}nav a{font-size:12px;gap:9px;padding:10px}.side-bottom{padding:20px 9px 0}.hero{grid-template-columns:1.8fr 1fr;padding:26px 23px}.hero h2{font-size:25px}.ring{width:110px;height:110px}.ring strong{font-size:28px}.stats{gap:10px}.stat{padding:15px;gap:9px}.stat-icon{display:none}.stat strong{font-size:22px}.grid2,.lesson-layout{grid-template-columns:1fr}.lesson-aside{position:static}.day-list{grid-template-columns:repeat(14,1fr)}.flow{grid-template-columns:repeat(4,1fr)}.flow-step:nth-child(4):after{display:none}.reader-layout{grid-template-columns:1fr}.reader-menu{position:static;max-height:none;display:flex;overflow:auto;gap:7px;padding-bottom:8px}.reader-menu a{white-space:nowrap;border:1px solid var(--line);border-radius:6px;margin:0;padding:7px 11px}.reader-menu a.active{border-color:#9bb59f}.top-meta>span{display:none}#toast{left:calc(50% + 90px)}}
@media(max-width:640px){.sidebar{position:static;width:100%;padding:17px 18px 0;display:block;border-right:0;border-bottom:1px solid var(--line)}.brand{font-size:15px;margin-bottom:17px}.brand small{font-size:10px}.brand-icon{width:36px;height:38px}.nav-label,.side-bottom{display:none}nav{display:flex;gap:6px;overflow:auto;padding-bottom:12px}nav a{white-space:nowrap;font-size:12px;padding:8px 11px}nav a>span{display:none}.app{margin-left:0}.topbar{height:56px;padding:0 20px}main{padding:25px 18px 32px}h1{font-size:25px}.page-intro{margin-bottom:22px}.page-intro p{font-size:12px}.page-intro>.actions{display:none}.hero{padding:25px 23px;grid-template-columns:1fr;gap:24px}.hero h2{font-size:28px}.hero-right{border-left:0;border-top:1px solid #3c5d50;padding-top:20px;display:flex;align-items:center;justify-content:space-between;text-align:left}.ring{width:85px;height:85px;margin:0}.ring strong{font-size:23px}.ring span{font-size:9px}.hero-right>span{max-width:170px;font-size:12px}.stats{gap:8px;margin-bottom:24px}.stat{padding:14px 10px;display:block}.stat strong{font-size:23px}.stat small{font-size:10px}.stat p{font-size:10px}.grid2{gap:17px}.panel{padding:21px 18px}.current-lesson{grid-template-columns:49px 1fr;gap:13px}.day-badge{width:48px;height:58px;padding:8px}.week-grid,.lesson-grid,.source-grid{grid-template-columns:1fr}.week p{min-height:0}.week{padding:19px}.flow{gap:8px}.flow-step{padding:14px 5px}.flow-step span{font-size:11px}.section-head h2{font-size:18px}.day-list{grid-template-columns:repeat(7,1fr)}.lesson-head h1{font-size:25px}.lesson-nav .btn{padding:9px 12px}.prose{font-size:14px}.prose h2{font-size:20px}.prose h3{font-size:17px}.reader-menu{max-width:100%}.filter{padding:8px 11px}.question-why{font-size:12px}.notes-label{align-items:flex-start}.rubric{gap:10px}.note-meta{align-items:flex-start}footer{font-size:10px;padding:12px 20px 22px}#toast{left:50%;bottom:20px}.topbar .btn{font-size:11px;padding:6px 10px}.btn{min-height:40px}.answer-options .btn{min-height:44px}.check-row{padding:11px 0}.search-box{font-size:16px}.notes-input{font-size:16px}}
@media print{.sidebar,.topbar,.actions,.lesson-aside,.filters,.lesson-nav,.reader-menu,#toast,footer,.btn,.notes-input,.notes-label,.answer-options,.completion,.skip,.practice-toolbar,.file-import{display:none!important}.app{margin:0}body{background:white;color:#222;font-size:11pt}main{padding:0;max-width:none;min-height:0}.panel,.hero,.week,.lesson-card,.stat{box-shadow:none;break-inside:avoid;border:1px solid #ddd;background:white;color:#222}.hero h2,.hero p,.hero .label{color:#222}.hero-right{display:none}.hero{display:block;min-height:0;padding:20px}.stats{display:none}.reader-layout,.lesson-layout{display:block}.prose{font-size:11pt}.table-wrap{overflow:visible}table{min-width:0;font-size:9pt}h1,h2,h3{break-after:avoid}a{color:#222}.feedback{color:#222}.page-intro{margin-bottom:15px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!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}
.reveal>summary{color:var(--green);font-size:13px;cursor:pointer;padding:9px 0}
[hidden]{display:none!important}
.prose pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f0f3ed;padding:14px;border-radius:7px}
.reader-layout>*,.lesson-layout>*,.grid2>*,.source-grid>*{min-width:0}
@media(max-width:850px){.reader-layout{grid-template-columns:minmax(0,1fr)}.reader-menu{max-width:100%;min-width:0}}

.sync-status{font-size:11px;color:#406a4f;white-space:nowrap}.sync-status.sync-failed{color:#a13931}@media(max-width:1150px){.top-meta>.sync-status{display:inline}}@media(max-width:850px){.top-meta>.sync-status{display:none}}