@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;600;700&family=Noto+Serif+SC:wght@500;600;700&display=swap');
:root{--green:#1e584b;--navy:#172e2a;--mint:#e7efe7;--paper:#f6f7f3;--ink:#25382f;--muted:#7c877f;--line:#e3e8e1;--red:#b9514a;--gold:#aa7a35}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font-family:'Noto Sans SC',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;font-size:14px;line-height:1.6}button,input,select,textarea{font:inherit}button,a{touch-action:manipulation}button{cursor:pointer}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible{outline:3px solid #85b4a2;outline-offset:3px}a{color:inherit;text-decoration:none}button{border:0;background:none;color:inherit}svg{width:21px;height:21px;vertical-align:middle;fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.sidebar{width:226px;height:100dvh;position:fixed;left:0;top:0;background:#173b34;color:#d4e0d9;padding:36px 23px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;align-items:center;gap:12px;color:white;margin-bottom:42px}.brand-icon{height:38px;width:38px;background:#dbe7bf;border-radius:10px;color:#244b3d;display:grid;place-items:center}.brand strong{font-family:'Noto Serif SC',serif;font-size:23px;letter-spacing:3px}.brand small{display:block;font-size:10px;letter-spacing:2px;color:#94b2a5;margin-top:1px}.nav-label{font-size:10px;color:#8da89b;letter-spacing:2px;margin:0 15px 12px}.nav{display:flex;flex-direction:column;gap:7px}.nav button{padding:13px 15px;text-align:left;display:flex;gap:12px;align-items:center;border-radius:8px;color:#adc5b8;position:relative}.nav button.active{background:#30574b;color:#f3f6e7}.nav button:hover{background:#264c41;color:white}.nav button.active:before{content:'';height:18px;width:3px;background:#d9e8ad;position:absolute;left:-23px;border-radius:0 3px 3px 0}.nav .badge{margin-left:auto;border-radius:6px;background:#45675a;color:#e8eedc;font-size:11px;padding:0px 7px}.side-bottom{margin-top:auto}.side-card{background:#21463c;border:1px solid #385a4d;border-radius:10px;padding:16px;margin-bottom:25px}.side-card strong{font-size:13px;color:#e5edd4}.side-card p{font-size:11px;line-height:1.8;color:#9bb5a6;margin:7px 0 0}.local-status{font-size:10px;letter-spacing:1px;color:#92ac9f;padding:0 5px}.dot{display:inline-block;width:6px;height:6px;background:#b8ca88;border-radius:100%;margin-right:6px}.workspace{margin-left:226px}.topbar{height:83px;display:flex;justify-content:space-between;align-items:center;padding:0 46px;border-bottom:1px solid var(--line);background:#fbfcf9}.breadcrumb{display:flex;align-items:center;gap:14px;font-size:12px;color:#8a928b}.breadcrumb strong{font-weight:500;color:#4d5c50}.topright{display:flex;align-items:center;gap:20px}.edition{font-size:11px;color:#718174;border:1px solid #dce3d7;padding:4px 10px;border-radius:5px}.avatar{background:#e5ead9;color:#526744;width:33px;height:33px;display:grid;place-items:center;border-radius:50%;font-size:12px}.mobile-brand{display:none}main{max-width:1430px;padding:34px 46px 50px;margin:auto}.eyebrow{font-size:11px;letter-spacing:2px;font-weight:600;color:#7c8b71}.page-head{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:25px;gap:15px}h1{font-size:27px;letter-spacing:1px;font-weight:600;margin:4px 0 6px;font-family:'Noto Serif SC',serif}h2{font-size:18px;font-weight:600;margin:0}h3{font-size:16px;margin:0}.sub{font-size:12px;color:var(--muted);margin:0}.date{font-size:11px;color:#8c958a}.hero{background:#e8eddf;border:1px solid #dce3ce;border-radius:14px;min-height:232px;padding:33px 34px;position:relative;overflow:hidden;display:flex;justify-content:space-between;gap:20px}.hero:after{content:'';position:absolute;width:350px;height:350px;border-radius:50%;right:-80px;top:-210px;border:1px solid #cfdabc}.hero-copy{z-index:1;max-width:65%}.hero .eyebrow{color:#6a7f54}.hero h2{font-family:'Noto Serif SC',serif;font-size:29px;line-height:1.5;letter-spacing:2px;margin:10px 0 10px}.hero p{font-size:12px;color:#7a8870;margin:0 0 24px}.hero-actions{display:flex;align-items:center;gap:17px}.btn{border-radius:7px;padding:11px 19px;display:inline-flex;align-items:center;justify-content:center;gap:10px;background:var(--green);color:white;font-size:12px;font-weight:500;white-space:nowrap}.btn:hover{background:#174639}.btn.secondary{background:white;border:1px solid #dce3d8;color:#47604b}.btn.ghost{background:transparent;color:#526b48;padding:8px 0}.btn.danger{background:#b9514a}.btn svg{width:16px;height:16px}.hero-art{position:relative;flex:0 0 220px;display:grid;place-items:center}.book-stack{width:166px;height:130px;position:relative;transform:rotate(-12deg)}.book-stack:before{content:'';position:absolute;inset:20px 0 -7px;background:#a6b88b;border-radius:5px 15px 15px 5px;transform:rotate(12deg);box-shadow:0 15px 25px #51633b12}.book-cover{position:absolute;inset:0;background:#315a48;border-radius:5px 12px 12px 5px;padding:20px 20px 15px 27px;box-shadow:inset 8px 0 #254a3b,0 12px 0 -4px #e6e7cb,0 16px 0 -4px #75956b;color:#edf0d6}.book-cover span{font-size:9px;letter-spacing:2px;color:#b9cbb0}.book-cover b{font-family:'Noto Serif SC',serif;display:block;font-size:20px;letter-spacing:4px;margin-top:9px;line-height:1.4}.book-mark{position:absolute;right:18px;top:0;width:15px;height:36px;background:#d6c78c;clip-path:polygon(0 0,100% 0,100% 100%,50% 80%,0 100%)}.spark{position:absolute;color:#7c9564;font-size:28px;right:5px;top:4px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:15px;margin:22px 0 31px}.stat{border:1px solid var(--line);border-radius:10px;background:#fff;padding:18px 20px}.stat-top{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:#808b7d}.stat-top svg{width:17px;height:17px;color:#8c9b82}.stat-value{font-family:Georgia,serif;font-size:29px;line-height:1.5;color:#334c38;margin-top:4px}.stat-value small{font-family:inherit;font-size:12px;color:#9aa38f;margin-left:7px}.stat-foot{font-size:10px;color:#96a18e;margin-top:2px}.section-head{display:flex;align-items:center;justify-content:space-between;margin:28px 0 15px}.section-head h2{font-size:16px}.section-head p{color:#8c9686;margin:3px 0 0;font-size:11px}.text-link{font-size:11px;color:#6f8263;display:flex;align-items:center;gap:6px}.text-link svg{width:13px}.home-grid{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:26px}.type-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:15px}.type-card{padding:21px 22px;background:white;border:1px solid var(--line);border-radius:10px;text-align:left;transition:transform .2s,border-color .2s}.type-card:hover{transform:translateY(-3px);border-color:#9fae8f}.type-card-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:15px}.type-icon{width:36px;height:36px;border-radius:9px;display:grid;place-items:center;background:#edf1e4;color:#738755}.type-card:nth-child(2) .type-icon{background:#eaf0ec;color:#638576}.type-card:nth-child(3) .type-icon{background:#f5eee0;color:#b29765}.type-card:nth-child(4) .type-icon{background:#eeecf3;color:#8e7da0}.type-num{font-size:10px;color:#939d8a}.type-card h3{font-size:14px;margin-bottom:4px}.type-card p{font-size:10px;color:#929b8c;margin:0}.bar{height:4px;background:#eff2e9;border-radius:5px;overflow:hidden;margin-top:18px}.bar>i{height:100%;display:block;background:#95a67a;border-radius:5px}.type-foot{font-size:10px;color:#929d86;display:flex;justify-content:space-between;margin-top:6px}.panel{border:1px solid var(--line);border-radius:11px;background:white;padding:23px}.daily-panel{height:100%}.daily-panel h3{font-size:14px}.ring{width:132px;height:132px;position:relative;display:grid;place-content:center;text-align:center;margin:24px auto 17px;border-radius:50%;background:conic-gradient(#8da36c calc(var(--p)*1%),#edf1e5 0)}.ring:before{content:'';position:absolute;inset:9px;border-radius:50%;background:white}.ring>*{position:relative}.ring b{font-family:Georgia,serif;font-size:30px;font-weight:400;line-height:1.3}.ring small{font-size:10px;color:#8b9583}.daily-panel .sub{text-align:center;font-size:10px}.goal-row{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:23px;padding-top:16px;font-size:10px;color:#8a957e}.goal-row strong{font-size:11px;color:#6e7d60}.mini-banner{display:flex;justify-content:space-between;align-items:center;background:#f0f2e9;border:1px solid #e0e5d7;padding:18px 22px;border-radius:10px;margin-top:18px;gap:10px}.mini-banner h3{font-size:13px;margin-bottom:3px}.mini-banner p{font-size:10px;margin:0;color:#8b9582}.exam-symbol{width:37px;height:37px;background:#e1e8d3;border-radius:50%;display:grid;place-items:center;color:#7f9263;flex-shrink:0}.mini-banner .text{flex:1}.recent-row{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #edf0e8;padding:14px 0;font-size:12px;gap:12px}.recent-row:last-child{border:0}.recent-row .sub{font-size:10px}.pill{font-size:10px;border-radius:4px;padding:3px 7px;background:#eef2e7;color:#7a8b62;white-space:nowrap}.pill.red{background:#f8eeeb;color:#b76b5f}.empty{text-align:center;padding:37px 15px;color:#98a18e;font-size:12px}.empty svg{width:35px;height:35px;color:#b0bca3;margin-bottom:10px}.empty h3{color:#61705c;font-size:15px;margin-bottom:5px}.footer-note{font-size:10px;color:#a0a798;margin-top:30px;display:flex;justify-content:space-between;gap:15px}.toolbar{display:flex;gap:10px;align-items:center;margin:20px 0;flex-wrap:wrap}.input,select,textarea{border:1px solid #dce3d6;background:white;border-radius:7px;padding:10px 12px;color:#506147;max-width:100%;outline:none}.input:focus,select:focus,textarea:focus{border-color:#8aab91}.input{min-width:200px;flex:1}.tabs{display:flex;gap:7px;flex-wrap:wrap;margin:18px 0}.tab{border:1px solid var(--line);border-radius:6px;padding:7px 14px;font-size:12px;background:white;color:#7d8c74}.tab.active{background:#e3ebdb;border-color:#cedbc0;color:#42643e}.bank-list{display:grid;gap:12px}.question-row{text-align:left;background:white;border:1px solid var(--line);border-radius:9px;padding:17px 20px;display:block;width:100%}.question-row:hover{border-color:#a4b293}.question-row p{margin:8px 0 3px;line-height:1.9;font-size:13px}.question-row small{font-size:10px;color:#929e87}.question-row .row-meta{display:flex;justify-content:space-between;gap:12px}.pager{display:flex;justify-content:center;align-items:center;gap:18px;margin:22px 0;color:#8a9680;font-size:12px}.quiz-grid{display:grid;grid-template-columns:minmax(0,1fr) 255px;gap:24px;align-items:start}.quiz-main{padding:29px 32px}.quiz-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:22px}.q-progress{font-family:Georgia,serif;font-size:19px;color:#75866a}.q-progress small{font-size:12px;color:#adb5a3}.quiz-stem{font-size:18px;font-weight:500;line-height:1.95;margin:0 0 24px}.options{display:grid;gap:12px}.option{text-align:left;display:flex;align-items:flex-start;gap:15px;padding:14px 16px;border:1px solid #e3e7de;border-radius:8px;background:#fcfdfa;font-size:13px;line-height:1.9;width:100%;opacity:1!important}.option .letter{height:27px;width:27px;min-width:27px;display:grid;place-items:center;border:1px solid #dbe1d2;border-radius:50%;line-height:1;font-size:12px;color:#8d9a80;background:white}.option.multi .letter{border-radius:5px}.option.selected{border-color:#799a72;background:#edf3e7}.option.selected .letter{background:#4f7850;color:white;border-color:#4f7850}.option.correct{border-color:#8cab80;background:#eef5e8}.option.correct .letter{background:#6c9062;color:white;border-color:#6c9062}.option.wrong{border-color:#cf9c94;background:#fcf1ef}.option.wrong .letter{background:#b36b61;color:white;border-color:#b36b61}.quiz-actions{display:flex;justify-content:space-between;align-items:center;margin-top:27px;gap:12px;flex-wrap:wrap}.answer-box{margin-top:22px;border-radius:8px;padding:17px 20px;background:#edf3e7;border:1px solid #d6e3cc;font-size:12px}.answer-box.bad{background:#fcf1ed;border-color:#efd9cf}.answer-box h3{font-size:14px;margin-bottom:6px}.answer-box p{margin:5px 0;color:#6e7d60}.answer-box.bad p{color:#9c786b}.answer-box .source-note{font-size:10px;opacity:.8}.answer-map{display:grid;grid-template-columns:repeat(5,1fr);gap:8px;margin-top:18px;max-height:330px;overflow:auto;padding:2px}.map-btn{border:1px solid #e1e7d9;border-radius:5px;font-size:11px;height:30px;color:#89957d}.map-btn.done{background:#e5eddd;border-color:#c9d8bd;color:#617853}.map-btn.bad{background:#f5e7e2;border-color:#e2bfb4;color:#ac7464}.map-btn.current{outline:2px solid #527347;outline-offset:1px}.legend{font-size:10px;color:#98a18e;margin-top:16px;line-height:1.9}.quiz-side .panel{padding:20px;margin-bottom:15px}.quiz-side h3{font-size:13px}.timer{font:30px Georgia,serif;color:#5e744f;margin:10px 0}.timer.urgent{color:var(--red)}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:25px}.form-row{margin:22px 0}.form-row label{font-size:12px;color:#79866c;display:block;margin-bottom:8px}.form-row select{width:100%}.exam-intro{background:#e9eedf;border:1px solid #dce4ce;border-radius:12px;padding:32px}.exam-intro h2{font:25px 'Noto Serif SC',serif;margin:16px 0}.exam-intro li{margin:17px 0;color:#7a886e;font-size:12px}.exam-intro ol{padding-left:17px}.result-head{text-align:center;padding:30px 20px}.score{font:70px Georgia,serif;color:#537847;line-height:1.3}.score small{font-size:18px;color:#9ba78b}.result-stats{display:flex;justify-content:center;gap:45px;margin:20px 0;color:#95a087;font-size:11px}.result-stats b{display:block;font-size:19px;color:#687e58;margin-bottom:4px}.result-head .hero-actions{justify-content:center}.review-item{margin-top:12px}.review-item summary{cursor:pointer;font-size:13px;line-height:1.9}.review-item p{font-size:12px;color:#7e8c72}.review-item .ans{color:#5b7f4e}.note-input{width:100%;resize:vertical;min-height:75px;margin-top:15px;font-size:12px}.data-row{display:flex;align-items:center;justify-content:space-between;padding:19px 0;border-bottom:1px solid var(--line);gap:20px}.data-row:last-child{border:0}.data-row p{font-size:11px;color:#8c987f;margin:5px 0 0}.data-row h3{font-size:14px}#toast{position:fixed;bottom:30px;left:50%;transform:translate(-50%,20px);background:#244c3f;color:#fff;padding:12px 20px;border-radius:8px;z-index:100;font-size:12px;opacity:0;pointer-events:none;transition:.2s;max-width:90vw}#toast.show{opacity:1;transform:translate(-50%,0)}dialog{border:1px solid #dfe5d8;border-radius:13px;padding:27px;width:430px;max-width:90vw;color:var(--ink);box-shadow:0 20px 80px #10261e22}dialog::backdrop{background:#173b3460;backdrop-filter:blur(3px)}dialog h3{margin-bottom:12px}dialog p{font-size:13px;color:#7d8b72;margin-bottom:24px}dialog .hero-actions{justify-content:flex-end}.loading{text-align:center;margin:25vh 20px;color:#718266}.mobile-nav{display:none}.kbd-hint{font-size:10px;color:#a0aa94;margin-top:20px}.error-note{color:#a06e5c;font-size:11px}
@media(min-width:1500px){main{padding-top:44px}.hero{min-height:258px}.hero h2{font-size:33px}.type-card{padding:25px}}
@media(max-width:1150px){.sidebar{width:194px;padding:30px 18px}.workspace{margin-left:194px}.topbar{padding:0 28px}main{padding:27px 28px}.home-grid{grid-template-columns:minmax(0,1fr) 240px;gap:18px}.hero-art{flex-basis:180px}.hero h2{font-size:25px}.quiz-grid{grid-template-columns:minmax(0,1fr) 215px;gap:17px}.quiz-main{padding:24px}.stat{padding:15px}.stats{gap:10px}.type-card{padding:18px}}
@media(max-width:900px){.home-grid{grid-template-columns:1fr}.daily-panel{display:none}.quiz-grid{grid-template-columns:1fr}.quiz-side{display:flex;gap:15px}.quiz-side .panel{flex:1}.quiz-side .map-panel{flex:2}.answer-map{grid-template-columns:repeat(10,1fr);max-height:180px}.hero-art{flex-basis:150px}.book-stack{width:135px;height:120px}.hero-copy{max-width:72%}.stats{grid-template-columns:repeat(2,1fr)}.settings-grid{gap:18px}}
@media(max-width:680px){body{font-size:13px}.sidebar{display:none}.workspace{margin-left:0}.topbar{height:66px;padding:0 20px;position:sticky;top:0;z-index:15;background:#fafbf7f2;backdrop-filter:blur(12px)}.breadcrumb{display:none}.mobile-brand{display:flex;align-items:center;gap:9px;font-family:'Noto Serif SC',serif;font-weight:700;font-size:18px;color:#31513f}.mobile-brand svg{width:23px;height:23px}.edition{font-size:9px;padding:3px 7px}.topright{gap:12px}.avatar{width:29px;height:29px;font-size:10px}main{padding:24px 19px 105px}h1{font-size:24px}.page-head{margin-bottom:20px}.date{display:none}.eyebrow{font-size:9px;letter-spacing:1.6px}.sub{font-size:11px}.hero{padding:24px 22px;min-height:230px}.hero h2{font-size:23px;letter-spacing:1px}.hero-copy{max-width:100%}.hero p{font-size:11px;max-width:220px}.hero-art{position:absolute;right:1px;bottom:23px;opacity:.24;transform:scale(.8);pointer-events:none}.hero-actions{gap:15px}.hero-actions .btn{z-index:2}.btn{padding:11px 15px;font-size:12px}.hero .btn.ghost{font-size:11px}.stats{gap:10px;margin:17px 0 24px}.stat{padding:14px 16px}.stat-value{font-size:28px}.stat-foot{font-size:9px}.type-grid{gap:11px}.type-card{padding:16px}.type-card-top{margin-bottom:13px}.type-num{font-size:9px}.type-card h3{font-size:13px}.type-card p{font-size:9px}.type-foot{font-size:9px}.bar{margin-top:15px}.section-head{margin-top:22px}.section-head h2{font-size:15px}.mini-banner{padding:16px}.mini-banner .text-link{font-size:10px}.footer-note{font-size:9px;flex-direction:column;gap:3px;margin-top:25px}.mobile-nav{display:flex;position:fixed;bottom:0;left:0;right:0;height:calc(65px + env(safe-area-inset-bottom));padding:7px 10px calc(7px + env(safe-area-inset-bottom));border-top:1px solid #e1e6d9;background:#fcfdf9f5;backdrop-filter:blur(16px);z-index:30;justify-content:space-around}.mobile-nav button{display:flex;flex-direction:column;gap:3px;align-items:center;color:#97a28a;font-size:9px;min-width:53px;padding:4px;border-radius:7px}.mobile-nav button.active{color:#365c3d;background:#eef3e6}.mobile-nav svg{width:21px;height:21px}.settings-grid{grid-template-columns:1fr}.exam-intro{padding:25px}.exam-intro li{margin:12px 0}.quiz-main{padding:21px 18px}.quiz-stem{font-size:16px;line-height:1.95}.quiz-top{margin-bottom:18px}.option{padding:13px 12px;gap:11px;font-size:12px}.option .letter{width:25px;height:25px;min-width:25px}.quiz-actions{gap:8px}.quiz-actions .btn{padding:10px 12px}.quiz-side{flex-direction:column;gap:0}.answer-map{grid-template-columns:repeat(8,1fr)}.panel{padding:19px}.toolbar{gap:8px}.toolbar .input{min-width:100%;font-size:12px}.toolbar select{flex:1;font-size:12px}.tabs{gap:6px}.tab{padding:6px 10px;font-size:11px}.question-row{padding:15px}.question-row p{font-size:12px}.data-row{align-items:flex-start;flex-direction:column;gap:12px}.result-stats{gap:29px}.kbd-hint{display:none}.page-head .btn.secondary{font-size:11px;padding:8px 10px}#toast{bottom:85px}.quiz-side .timer-panel{display:flex;align-items:center;justify-content:space-between;gap:10px}.timer-panel .timer{font-size:24px}.timer-panel .sub{display:none}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}

/* Keep book lettering within its cover at both breakpoints. */
.book-cover span{font-size:8px;letter-spacing:1px;white-space:nowrap}.book-cover b{font-size:18px;letter-spacing:2px}

/* Topic selection and text answers. */
.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-bottom:22px}.category-card{display:flex;flex-direction:column;gap:9px;text-align:left;padding:18px;background:#fff;border:1px solid var(--line);border-radius:10px;min-width:0}.category-card:hover{border-color:#9fae8f}.category-card.active{background:#edf3e7;border-color:#799a72;box-shadow:inset 0 0 0 1px #799a72}.category-heading{display:flex;gap:8px;align-items:flex-start;line-height:1.7}.category-heading svg{flex:0 0 19px;margin-top:3px}.category-heading strong{font-size:13px;overflow-wrap:anywhere}.category-detail{font-size:10px;color:var(--muted);line-height:1.8}.fill-fields{display:grid;gap:14px}.fill-field{display:flex;align-items:center;gap:12px}.fill-field>span{min-width:60px;font-size:12px;color:var(--muted)}.fill-field input{min-width:0;width:100%;font-size:14px}.fill-help{margin-top:15px;line-height:1.9}.explanation{margin-top:14px;line-height:1.9}.explanation strong{font-size:12px}.explanation p{font-size:12px;margin:5px 0 0}.question-row p{overflow-wrap:anywhere}
@media(max-width:900px){.category-grid{grid-template-columns:1fr}.category-card{gap:5px;padding:15px 18px}}

@media(max-width:680px){.category-type-head{align-items:flex-start;flex-direction:column;gap:9px}.category-type-head .text-link{white-space:nowrap}}