@charset "UTF-8";
@media(max-width:650px){#sidebar .nav-item{flex-direction:column;gap:4px;font-size:10px;position:relative}#sidebar .nav-item>span{white-space:nowrap}#sidebar .nav-item .badge{position:absolute;right:8px;top:3px}.textbook-link{margin-left:0!important}}
.textbook-link{display:inline-flex;align-items:center;gap:9px;padding:9px 14px;border:1px solid #cfdbbf;border-radius:7px;background:#fff;color:#5a7b46;font-size:12px;margin:0 0 14px 47px}.textbook-link:hover{background:#eff4e7}
:root{--bg:#f8f9f5;--paper:#fff;--green:#225949;--deep:#173f36;--mint:#eaf1e6;--ink:#243c34;--muted:#7b877e;--line:#e4e9df;--orange:#cb764b;--shadow:0 8px 24px #243c3405;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0;font-size:14px;line-height:1.65}button,input,textarea{font:inherit}button,a,input,textarea{ -webkit-tap-highlight-color:transparent}button{cursor:pointer}button,a{touch-action:manipulation}button{color:inherit}button:disabled{cursor:not-allowed;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid #d8aa61;outline-offset:4px}a{color:inherit;text-decoration:none}svg{flex-shrink:0;vertical-align:middle}button svg{vertical-align:middle}h1,h2,h3,h4,p{margin:0}h1{font-size:32px;font-weight:650;letter-spacing:-1px;line-height:1.5}h2{font-size:23px;line-height:1.5;font-weight:600}h3{font-size:18px;font-weight:600}h4{font-size:16px;font-weight:600}p{line-height:1.9}small{font-size:12px}#sidebar{width:242px;position:fixed;inset:0 auto 0 0;border-right:1px solid var(--line);padding:35px 22px 24px;background:#fcfcf8;display:flex;flex-direction:column;z-index:10}.brand{display:flex;gap:11px;align-items:center;font-size:21px;font-weight:700;white-space:nowrap}.brand-icon{background:var(--green);color:#f4f5dd;display:grid;place-items:center;width:43px;height:46px;border-radius:14px 14px 14px 4px}.brand small{display:block;font-size:8px;letter-spacing:1.6px;font-weight:500;margin-top:3px;color:#859285}.edition{margin:37px 8px 23px;font-size:12px;color:#647669;letter-spacing:.4px}.edition span{display:block;font-size:10px;letter-spacing:2px;margin-top:6px;color:#9aa396}.nav-item{display:flex;align-items:center;gap:13px;padding:13px 14px;border-radius:8px;margin:5px 0;color:#6f7d73;font-size:13px;transition:background .15s}.nav-item:hover{background:#f0f3e9}.nav-item.active{background:#e7eedf;color:var(--green);font-weight:600}.badge{margin-left:auto;font-size:10px;background:#d8e5d0;padding:0 6px;border-radius:5px}.side-plan{border:1px solid #e3e9dc;border-radius:12px;padding:19px 17px;margin-top:43px;background:#f6f8f0}.tiny{font-size:11px;color:var(--muted);letter-spacing:.3px}.side-count{display:flex;gap:7px;align-items:baseline;margin:8px 0 12px}.side-count strong{font-size:30px;font-weight:550}.side-count span{font-size:11px;color:#879182}.progress{height:5px;border-radius:5px;background:#e2e8da;overflow:hidden}.progress i{display:block;height:100%;background:#678a58;transition:width .3s}.side-plan p{font-size:10px;color:#879182;line-height:1.9;margin-top:13px}.sidebar-bottom{margin-top:auto;padding-top:35px}.plain{border:0;background:none;color:#708172;display:flex;align-items:center;gap:9px;font-size:11px;padding:5px}.local-dot{font-size:9px;display:block;color:#99a392;margin:16px 6px 0}.local-dot:before{content:"";width:5px;height:5px;border-radius:50%;background:#8ca977;display:inline-block;margin-right:7px}#main{margin-left:242px;padding:34px 48px 0;max-width:1710px;min-height:100vh}.page-header{display:flex;justify-content:space-between;gap:15px;align-items:center;margin-bottom:28px}.eyebrow{font-size:10px;letter-spacing:1.6px;color:#87917f;font-weight:500}.eyebrow span{margin:0 10px;color:#c6ccbf}.page-header h1{margin-top:14px}.page-header p{color:var(--muted);font-size:12px;margin-top:9px;letter-spacing:.25px}.semester{border:1px solid var(--line);background:#fff;border-radius:20px;padding:7px 13px;display:flex;align-items:center;gap:8px;font-size:10px;color:#798574;white-space:nowrap}.hero{position:relative;background:#edf2e4;border:1px solid #e4eadb;border-radius:16px;min-height:311px;padding:28px 34px;display:flex;overflow:hidden}.hero-copy{z-index:1;width:65%}.pill{font-size:10px;color:#628057;display:inline-flex;align-items:center;gap:6px;background:#e1eacb99;padding:4px 10px;border-radius:20px;letter-spacing:1px}.hero h2{font-size:33px;line-height:1.55;font-weight:600;letter-spacing:1px;margin:15px 0 11px}.hero h2 span{color:#60864a}.hero-copy p{font-size:11px;color:#77816d;line-height:1.95}.primary,.secondary{border-radius:7px;display:inline-flex;gap:13px;align-items:center;justify-content:center;padding:12px 19px;font-size:12px;border:1px solid transparent;font-weight:500}.primary{background:var(--green);color:white}.primary:hover:not(:disabled){background:#153f34}.secondary{background:white;color:var(--green);border-color:#cfdbcb}.secondary:hover{background:#f1f5ec}.hero .primary{margin-top:21px}.hero-foot{display:inline-block;font-size:9px;color:#88947e;margin-left:13px}.hero-art{position:absolute;width:340px;right:30px;top:35px;height:260px}.hero-art svg{position:absolute;width:300px;height:230px;top:5px;left:15px;transform:rotate(-7deg)}.orbit{position:absolute;border:1px dashed #c6d4b5;border-radius:50%;width:258px;height:258px;left:35px;top:0}.orbit-two{width:210px;height:210px;top:25px;left:59px;border-style:solid;border-color:#dbe4c9}.art-label{position:absolute;font-size:9px;color:#7a9164;background:#f7f8ec;border:1px solid #dfe6d0;border-radius:6px;padding:5px 10px;transform:rotate(8deg);z-index:1}.a1{right:0;top:16px}.a2{left:0;bottom:8px;transform:rotate(-5deg)}.metrics{display:grid;grid-template-columns:repeat(3,1fr);margin:24px 0 33px;border:1px solid var(--line);background:white;border-radius:11px;padding:20px 0}.metrics>div{display:flex;gap:15px;padding:0 23px;align-items:center;border-right:1px solid var(--line)}.metrics>div:last-child{border:0}.metric-icon{height:43px;width:43px;border-radius:11px;display:grid;place-items:center}.mint{background:#edf2e8;color:#5c7952}.peach{background:#fbf0e6;color:#b88759}.lilac{background:#f0eef8;color:#8c84a5}.metrics strong{font-size:23px;font-weight:600}.metrics strong small{font-size:11px;font-weight:400;color:#7a8778;margin-left:3px}.metrics p{font-size:9px;color:#97a18f;margin-top:2px}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:20px}.section-heading h2{font-size:21px;margin-top:5px}.text-button{border:0;background:none;padding:4px 0;display:inline-flex;align-items:center;gap:8px;color:#69815b;font-size:11px;white-space:nowrap}.text-button:hover{color:#284e32}.unit-tabs{display:flex;gap:6px;overflow-x:auto;padding-bottom:11px;border-bottom:1px solid var(--line);scrollbar-width:thin}.unit-tab{border:1px solid transparent;background:transparent;border-radius:7px;padding:7px 11px;white-space:nowrap;font-size:10px;color:#8a9284}.unit-tab span{font-size:9px;margin-right:6px}.unit-tab:hover{background:#edf2e6}.unit-tab.active{background:#e8efdf;color:#587448;border-color:#dce6d0}.unit-heading{display:flex;align-items:center;gap:13px;margin:23px 0 18px}.unit-symbol{display:grid;place-items:center;width:44px;height:48px;color:#748765;background:#edf0e7;border-radius:10px}.unit-heading h3{font-size:11px;color:#879179;font-weight:400}.unit-heading h3 span{font-size:17px;font-weight:600;color:#344c38;margin-left:9px}.unit-heading p{font-size:10px;margin-top:4px;color:#8f9986}.unit-heading b{margin:0 6px;font-weight:400}.lesson-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.lesson-card{text-align:left;background:#fff;border:1px solid var(--line);border-radius:11px;padding:16px;box-shadow:var(--shadow);transition:transform .2s,border-color .2s;display:flex;flex-direction:column;min-width:0}.lesson-card:hover{transform:translateY(-4px);border-color:#adc098}.lesson-card.done{background:#f8fbf2;border-color:#c7d6b9}.lesson-meta{display:flex;align-items:center;justify-content:space-between;gap:4px;font-size:9px;color:#87917e}.status{font-size:9px;border-radius:4px;background:#f5f5f0;color:#9ca18f;padding:2px 6px;white-space:nowrap;font-weight:400}.status.complete{background:#e4edda;color:#64844e}.phase{margin:19px 0 10px;color:#80926d;font-size:10px;display:flex;align-items:center;gap:8px}.phase>span{color:#94a185;font-family:Georgia,serif;font-size:23px}.lesson-card:nth-child(2) .phase{color:#ac825b}.lesson-card:nth-child(3) .phase{color:#8d83a2}.lesson-card:nth-child(4) .phase{color:#74918a}.lesson-card h4{font-size:14px;margin-bottom:8px}.lesson-card p{font-size:10px;line-height:1.9;color:#929b8b;margin-bottom:20px;min-height:38px}.card-foot{display:flex;justify-content:space-between;align-items:center;margin-top:auto;border-top:1px solid #f0f1ea;padding-top:14px;color:#7a8e6b;font-size:9px}.card-foot>span{display:flex;align-items:center;gap:4px}.card-foot b{font-weight:400;margin:0 2px}.bottom-grid{display:grid;grid-template-columns:1.7fr 1fr;gap:17px;margin-top:26px}.method-box{background:#fff;border:1px solid var(--line);border-radius:11px;padding:21px 23px}.method-box h3{font-size:15px;margin:6px 0 18px}.routine{display:flex;align-items:center;justify-content:space-between}.routine>span{font-size:11px}.routine b{font-size:10px;color:#9aad8a;margin-right:8px}.routine small{display:block;color:#a1a795;font-size:9px;margin-left:23px;margin-top:5px}.routine i{font-style:normal;color:#c6cebd}.quote-box{background:#f0eee3;border-radius:11px;padding:20px 24px;position:relative}.quote-box svg{position:absolute;right:21px;top:20px;color:#acb096;transform:rotate(20deg)}.quote-box p{font-size:13px;color:#787c60;line-height:1.95;margin-top:12px}.quote-box>span{font-size:9px;color:#a9aa96;display:block;margin-top:11px}footer{margin-top:32px;padding:20px 0 24px;border-top:1px solid var(--line);font-size:9px;color:#a3aa9c;display:flex;justify-content:space-between;gap:12px}footer span{font-size:8px}.plan-banner{display:flex;justify-content:space-between;align-items:center;background:#edf2e4;border:1px solid #e2e9d9;padding:20px 23px;border-radius:10px;margin-bottom:30px;gap:15px}.plan-banner>div{display:flex;gap:14px;align-items:center;font-size:12px}.timeline-unit{display:flex;gap:25px;position:relative;padding-bottom:32px}.timeline-unit:not(:last-child):before{content:"";position:absolute;top:45px;bottom:0;left:23px;border-left:1px solid #d8e1d0}.timeline-marker{width:47px;height:47px;flex-shrink:0;border-radius:50%;display:grid;place-items:center;border:1px solid #d8e1d0;background:#eef2e7;font:20px Georgia;color:#7e936b}.timeline-content{flex:1;min-width:0;padding-top:2px}.timeline-content .section-heading p{font-size:11px;color:#8a9680;margin-top:6px}.unit-keywords{display:flex;gap:6px}.unit-keywords span{font-size:9px;border:1px solid var(--line);padding:3px 7px;border-radius:4px;color:#8a9780}.plan-lessons{display:grid;grid-template-columns:1fr 1fr;gap:10px}.plan-lesson{display:flex;align-items:center;text-align:left;gap:16px;background:white;border:1px solid var(--line);border-radius:9px;padding:15px}.plan-lesson:hover{border-color:#a7b991}.day-label{border-right:1px solid var(--line);padding-right:16px;font-size:12px}.day-label small{display:block;color:#9aa58e;font-size:9px;margin-top:2px}.plan-lesson>span:nth-child(2)>small{display:block;font-size:9px;color:#97a48c}.plan-lesson strong{display:block;font-size:12px;font-weight:500;margin-top:4px}.plan-check{margin-left:auto;color:#a6b297}.is-done{color:#548142}.back{border:0;background:none;padding:0;margin-bottom:12px;color:#748669;font-size:11px}.study-layout{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:28px}.goal-box{padding:20px;background:#eaf0df;border-radius:10px;display:flex;gap:13px}.goal-box strong{font-size:12px;color:#537440}.goal-box p{font-size:12px;color:#728163;margin-top:5px}.study-section{margin-top:31px}.step-title{display:flex;gap:13px;align-items:center;margin-bottom:18px}.step-title>span{width:34px;height:34px;border:1px solid #dbe4d1;border-radius:50%;display:grid;place-items:center;color:#8ca177;font:17px Georgia}.step-title h2{font-size:19px}.step-title p{font-size:10px;color:#909d83;margin-top:4px}.reading-note{font-size:12px;color:#78876c;padding-left:47px}.knowledge-card{background:white;border:1px solid var(--line);border-radius:10px;margin-bottom:14px;padding:24px;position:relative}.knowledge-number{position:absolute;right:22px;top:18px;font:32px Georgia;color:#e7ecdf}.knowledge-card h3{font-size:16px;padding-right:35px;margin-bottom:12px}.knowledge-card>p{font-size:13px;line-height:2;color:#6b7a62}.tip{background:#f7f7ef;border-left:3px solid #c6d3b5;padding:11px 13px;margin-top:15px;font-size:11px;line-height:1.9;color:#879077}.tip b{display:block;font-size:10px;color:#7d8d69;margin-bottom:3px}.recall{background:#f4eddf;padding:20px 23px;border-radius:9px;margin:20px 0}.recall>.tiny{color:#a58a62}.recall p{margin-top:6px;font-size:12px;color:#827151}.note-label{display:block;font-size:12px;margin:18px 0 10px}.note-label small{margin-left:10px;color:#96a087;font-size:9px}textarea{width:100%;height:115px;resize:vertical;border:1px solid #dce4d3;border-radius:8px;padding:14px;background:white;color:#506743;font-size:12px;line-height:1.8}textarea::placeholder{color:#aeb5a5}.study-aside{position:relative}.session-summary{position:sticky;top:20px;background:white;border:1px solid var(--line);padding:23px 20px;border-radius:12px}.session-summary h3{font-size:16px;margin-top:8px}.session-summary>p{font-size:10px;color:#9aa38e;margin:10px 0 19px}.check-row{display:flex;align-items:flex-start;gap:9px;font-size:11px;color:#7b896d;margin:17px 0;cursor:pointer}.check-row input{accent-color:var(--green);width:15px;height:15px;margin:2px 0 0;flex-shrink:0}.session-line{display:flex;justify-content:space-between;border-top:1px solid var(--line);margin-top:22px;padding-top:18px;font-size:11px}.session-line>span{color:#95a087}.full{width:100%;margin-top:17px}.session-summary>small{display:block;font-size:9px;color:#9ba78e;line-height:1.8;margin-top:10px}.aside-tip{margin:23px 8px;color:#a0ac93}.aside-tip h4{font-size:12px;margin:8px 0}.aside-tip p{font-size:10px}.question{border:1px solid var(--line);background:#fff;border-radius:10px;margin:22px 0;padding:20px;min-width:0}.question legend{font-size:13px;font-weight:500;line-height:1.8;padding:0 5px;max-width:100%}.q-number{font-size:11px;color:#8b9a7d;margin-right:10px;font-family:Georgia,serif}.options{display:grid;gap:9px}.option{display:flex;gap:10px;align-items:center;background:#fafbf7;border:1px solid #e8ecdf;border-radius:7px;padding:11px 12px;font-size:12px;cursor:pointer;line-height:1.7}.option input{position:absolute;opacity:0;width:1px;height:1px}.option:has(input:focus-visible){outline:3px solid #d8aa61;outline-offset:2px}.option-letter{font-size:10px;display:grid;place-items:center;border:1px solid #d9e0ce;border-radius:50%;width:24px;height:24px;flex-shrink:0;color:#879578}.option.chosen{background:#edf3e6;border-color:#9bb989}.option.chosen .option-letter{color:white;background:#628553;border-color:#628553}.option.right{background:#edf6e8;border-color:#98bc85}.option.right>svg{margin-left:auto;color:#55883a}.option.incorrect{background:#fcf0e9;border-color:#dba98e}.option.incorrect .option-letter{background:#bc8464;border-color:#bc8464}.option:has(input:disabled){cursor:default}.explanation{background:#f5f7ef;border-radius:6px;padding:14px;margin-top:16px;font-size:12px}.explanation strong{font-size:11px;color:#60834d}.explanation p{font-size:12px;color:#7c886e;margin-top:4px}.explanation small{display:block;font-size:10px;color:#a1ad93;margin-top:6px}.question-wrong .explanation{background:#fcf6ed}.question-wrong .explanation strong{color:#ac7b50}.result{background:#f5ebdc;border:1px solid #e7dbc2;padding:20px;border-radius:10px;display:flex;align-items:center;gap:21px}.result>strong{font-size:38px;color:#a68047;white-space:nowrap}.result strong small{font-size:11px;font-weight:400}.result h3{font-size:14px;color:#8b734a}.result p{font-size:10px;color:#ac9875;margin-top:6px}.result.perfect{background:#edf4e6;border-color:#d9e6cc}.result.perfect strong,.result.perfect h3{color:#67864f}.submit-hint{font-size:10px;color:#9aa88b;margin-left:12px}.form-message{color:#b56d48;font-size:12px;margin-bottom:12px}.wrong-toolbar{display:flex;justify-content:space-between;align-items:center;gap:15px;margin:10px 0 27px}.segmented{display:flex;border:1px solid #e0e6d6;background:#eef2e7;border-radius:8px;padding:4px;gap:4px}.segmented button{border:0;background:none;border-radius:5px;padding:7px 15px;font-size:11px;color:#879778}.segmented button.active{background:white;color:#466a33;box-shadow:0 1px 4px #273c2710}.segmented b{margin-left:5px;font-size:9px}.wrong-toolbar>span{font-size:10px;color:#99a589}.wrong-list{max-width:850px}.wrong-item{background:white;border:1px solid var(--line);padding:22px;border-radius:12px;margin-bottom:20px}.wrong-meta{display:flex;justify-content:space-between;align-items:center;font-size:10px;color:#9ca88d}.wrong-item .question{border:0;margin:20px 0 14px;padding:0}.wrong-item legend{padding:0 0 13px}.wrong-actions{display:flex;justify-content:space-between;align-items:center}.small-button{padding:9px 17px}.empty-state{min-height:430px;text-align:center;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#f0f4e9;border:1px dashed #d9e3ce;border-radius:13px;padding:30px}.empty-icon{color:#7a9569;display:grid;place-items:center;background:#e1ebd6;border-radius:50%;width:92px;height:92px;margin-bottom:25px}.empty-state h2{font-size:22px;color:#60794e}.empty-state p{font-size:12px;color:#94a383;margin:10px 0 25px}.record-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:17px;margin-bottom:26px}.record-stats>div{background:white;border:1px solid var(--line);border-radius:11px;padding:25px}.record-stats span{font-size:11px;color:#8d9b7c;display:block}.record-stats strong{font-size:38px;display:block;color:#527442;margin-top:12px;font-weight:500}.record-stats small{font-size:12px;color:#9eab8b}.records-panel{background:white;border:1px solid var(--line);border-radius:11px;padding:26px;margin-bottom:22px}.records-panel h2{font-size:18px}.heatmap{display:grid;gap:17px;max-width:670px;margin-top:20px}.heatmap>div{display:flex;justify-content:space-between;align-items:center;gap:15px}.heatmap>div>span{font-size:12px;color:#859474}.heatmap>div>div{display:flex;gap:10px}.heat-cell{width:38px;height:32px;border-radius:5px;background:#f2f4ec;border:1px solid #e7ebdf;color:#c1cbb4;font-size:11px}.heat-cell.filled{background:#86a670;color:white;border-color:#86a670}.heat-cell.started{background:#e9d4b0;border-color:#e9d4b0;color:#93774d}.record-row{padding:18px 0;border-bottom:1px solid var(--line)}.record-row:last-child{border:0}.record-title{border:0;padding:0;background:none;font-size:13px;display:flex;align-items:center;gap:10px;color:#637f50}.record-row p{font-size:10px;color:#9fa98f;margin-top:6px}.record-row blockquote{margin:13px 0 0;padding:12px 15px;border-left:3px solid #ccd9bf;background:#f7f9f2;font-size:12px;white-space:pre-wrap;overflow-wrap:anywhere;color:#7e8e6c}.empty-copy{font-size:12px;color:#98a587;margin-top:20px}dialog{border:1px solid #dce4d2;border-radius:15px;max-width:510px;width:calc(100% - 32px);padding:30px;box-shadow:0 25px 100px #173f3633;color:var(--ink)}dialog::backdrop{background:#17291f55;backdrop-filter:blur(3px)}.dialog-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.dialog-heading h2{font-size:21px}.icon-button{display:grid;place-items:center;background:none;border:0;padding:5px;color:#9aa48c}dialog>p{font-size:12px;color:#8a987b}dialog input[type=date]{border:1px solid #dbe3cf;border-radius:6px;padding:11px;margin-right:9px;font-size:12px;color:#5a754b;background:white}.settings-divider{height:1px;background:var(--line);margin:26px 0}dialog h3{font-size:16px;margin-bottom:9px}.backup-buttons{display:flex;gap:10px;margin:18px 0 12px}.import-label{cursor:pointer}dialog>small{font-size:10px;color:#9aa68b}#settings-message{color:#9a7949;margin-top:14px;font-size:11px}#toast{position:fixed;bottom:26px;left:50%;transform:translate(-50%,20px);background:#264d3e;color:white;border-radius:9px;padding:13px 22px;font-size:12px;box-shadow:0 6px 30px #0002;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:100;max-width:calc(100% - 30px)}#toast.show{opacity:1;transform:translate(-50%,0)}.skip{position:fixed;top:-100px;left:15px;background:var(--green);padding:10px 16px;color:white;z-index:200}.skip:focus{top:10px}@media(min-width:1500px){#main{padding-left:65px;padding-right:65px}.hero{min-height:330px}.hero-art{right:60px}.lesson-card{padding:20px}.hero-copy p{font-size:13px}.hero h2{font-size:36px}.lesson-card h4{font-size:15px}}
@media(max-width:1200px){#sidebar{width:212px;padding-left:17px;padding-right:17px}.brand{font-size:18px}#main{margin-left:212px;padding:28px 28px 0}.hero-art{right:-20px;opacity:.8}.hero-foot{display:block;margin:10px 0 0}.hero-copy{width:70%}.hero h2{font-size:29px}.metrics>div{padding:0 15px;gap:10px}.metrics strong{font-size:20px}.lesson-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.lesson-card p{min-height:0}.study-layout{grid-template-columns:minmax(0,1fr) 230px;gap:18px}.study-aside .session-summary{padding:20px 16px}.unit-keywords{display:none}.hero-art{transform:scale(.88);transform-origin:right center}.bottom-grid{grid-template-columns:1.5fr 1fr}footer{flex-direction:column;gap:4px}}
@media(max-width:900px){#sidebar{width:180px;padding-left:12px;padding-right:12px}.brand{font-size:16px;gap:8px}.brand-icon{width:34px;height:39px}.brand small{font-size:6px;letter-spacing:1px}.edition{font-size:10px}.nav-item{font-size:11px;gap:8px;padding:12px 10px}.nav-item svg{width:19px}.side-plan{padding:15px 12px}.side-plan p{font-size:9px}#main{margin-left:180px;padding:25px 23px 0}h1{font-size:25px}.semester{display:none}.hero{padding:25px}.hero-copy{width:100%}.hero-art{opacity:.2;right:-30px}.hero h2{font-size:29px}.metrics>div{padding:0 10px;gap:8px}.metric-icon{height:32px;width:32px}.metric-icon svg{width:17px}.metrics strong{font-size:17px}.metrics strong small{font-size:9px}.metrics p{font-size:8px}.bottom-grid{grid-template-columns:1fr}.quote-box{display:none}.study-layout{grid-template-columns:1fr}.study-aside{display:flex;gap:20px}.session-summary{position:static;flex:1}.aside-tip{flex:1}.plan-lessons{grid-template-columns:1fr}.plan-banner{align-items:flex-start}.plan-banner>div{font-size:10px}.plan-banner .text-button{font-size:9px}.timeline-unit{gap:16px}.record-stats{gap:9px}.record-stats>div{padding:17px}.record-stats span{font-size:9px}.record-stats strong{font-size:29px}.wrong-toolbar{align-items:flex-start;flex-direction:column}}
@media(max-width:650px){#sidebar{position:relative;width:100%;padding:18px 18px 9px;border-right:0;border-bottom:1px solid var(--line);display:block}.brand{font-size:19px}.brand small{font-size:7px;letter-spacing:1.3px}.brand-icon{width:39px;height:42px}.edition,.side-plan{display:none}#sidebar nav{display:flex;margin-top:17px;gap:4px}.nav-item{flex:1;justify-content:center;padding:10px 4px;gap:5px;font-size:10px;margin:0}.nav-item svg{width:16px}.nav-item .badge{margin-left:0;padding:0 3px;font-size:8px}.sidebar-bottom{position:absolute;right:16px;top:26px;padding:0}.sidebar-bottom .plain{font-size:0;padding:5px}.sidebar-bottom .plain svg{width:22px;height:22px}.local-dot{display:none}#main{margin:0;padding:23px 18px 0}.page-header{margin-bottom:21px}.page-header .eyebrow{font-size:9px}.page-header h1{font-size:26px;margin-top:9px}.page-header p{font-size:11px}.hero{min-height:315px;padding:22px}.hero h2{font-size:29px}.hero-copy p{font-size:11px}.hero-art{right:-75px;opacity:.2}.hero .primary{font-size:11px}.hero-foot{font-size:9px}.metrics{margin:17px 0 28px;padding:14px 0}.metrics>div{flex-direction:column;align-items:flex-start;padding:0 12px;gap:8px}.metrics strong{font-size:20px}.metrics strong small{font-size:9px;display:inline}.metrics p{font-size:8px;line-height:1.6}.metrics .metric-icon{width:30px;height:30px;border-radius:8px}.section-heading h2{font-size:19px}.text-button{font-size:10px}.section-heading{gap:8px}.eyebrow{font-size:8px}.unit-tab{font-size:10px}.unit-heading h3{font-size:10px}.unit-heading h3 span{font-size:16px;margin-left:4px}.lesson-grid{gap:10px}.lesson-card{padding:13px}.lesson-meta{font-size:8px;flex-wrap:wrap}.status{font-size:8px}.phase{margin-top:13px}.lesson-card h4{font-size:13px;line-height:1.8}.lesson-card p{font-size:10px;margin-bottom:15px}.card-foot{font-size:8px;gap:2px}.card-foot svg{width:13px}.card-foot>span{gap:2px}.routine>span{font-size:10px}.method-box{padding:18px}.routine b{margin-right:3px}.routine small{margin-left:17px}.routine i{font-size:10px}.plan-banner{padding:15px;flex-direction:column;gap:8px}.plan-banner>div{font-size:11px}.timeline-marker{width:35px;height:35px;font-size:16px}.timeline-unit:not(:last-child):before{left:17px;top:35px}.timeline-unit{gap:12px}.timeline-content .section-heading h2{font-size:17px}.timeline-content .section-heading p{font-size:10px}.plan-lesson{padding:13px 10px;gap:10px}.day-label{padding-right:10px}.plan-lesson strong{font-size:11px}.study-aside{display:block}.aside-tip{display:none}.knowledge-card{padding:20px}.knowledge-card h3{font-size:15px}.reading-note{padding-left:0}.question{padding:16px}.question legend{font-size:12px}.option{font-size:12px;padding:10px}.result{padding:17px;gap:14px}.result>strong{font-size:31px}.result h3{font-size:12px}.result p{font-size:10px}.study-section{margin-top:27px}.submit-hint{display:block;margin:12px 0 0}.wrong-item{padding:17px}.segmented button{font-size:10px;padding:7px 11px}.empty-state h2{font-size:18px}.empty-state p{font-size:11px}.record-stats{grid-template-columns:1fr 1fr 1fr;gap:7px}.record-stats>div{padding:14px 10px}.record-stats span{font-size:9px;line-height:1.7;min-height:30px}.record-stats strong{font-size:27px}.record-stats small{font-size:9px}.records-panel{padding:20px 15px}.heatmap>div{gap:10px}.heatmap>div>span{font-size:10px;max-width:45%}.heatmap>div>div{gap:6px}.heat-cell{width:28px;height:28px}.heatmap{gap:14px}.note-label small{display:block;margin:5px 0 0}dialog{padding:24px}dialog input[type=date]{margin-bottom:12px;max-width:100%}footer{font-size:8px;line-height:1.9}.empty-state{min-height:370px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}