:root{--bg:#f5f4ee;--paper:#fffefb;--ink:#263c35;--muted:#79827b;--green:#285c50;--line:#e5e7df;--soft:#e7eee7;--orange:#b96948;--blue:#637d9b;font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none}*{box-sizing:border-box}body{margin:0}button,input,textarea,select{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.45;cursor:not-allowed}button:focus-visible,a:focus-visible{outline:3px solid #ca9866;outline-offset:3px}a{color:inherit;text-decoration:none}.shell{max-width:1500px;margin:auto;display:flex;min-height:100vh}.sidebar{width:228px;padding:38px 24px;border-right:1px solid var(--line);display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0}.brand{display:flex;gap:12px;align-items:center;font-size:25px;font-weight:700;letter-spacing:2px}.brandmark{background:var(--green);color:#fff;border-radius:15px;width:48px;height:48px;display:grid;place-items:center;font-family:serif}.brand small{font-size:10px;letter-spacing:2px;display:block;font-weight:400;color:var(--muted);margin-top:5px}nav{display:flex;flex-direction:column;gap:9px;margin-top:48px}nav a{padding:14px 16px;border-radius:10px;font-size:14px;display:flex;gap:13px;align-items:center}nav a.active{background:var(--soft);color:var(--green);font-weight:600}nav a:hover{background:var(--soft)}nav .navicon{font-size:19px;width:23px;text-align:center}.side-note{margin-top:auto;font-size:12px;line-height:2.3;color:var(--muted)}.side-note small{font-size:10px}.status-dot{display:inline-block;width:6px;height:6px;border-radius:50%;background:#638d6f}main{padding:28px 46px 18px;width:calc(100% - 228px);max-width:1230px}header{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--muted);margin-bottom:30px}.quiet{background:none;border:none;color:var(--muted);padding:10px;font-size:12px}.eyebrow{font-size:11px;letter-spacing:2px;color:var(--muted);margin-bottom:13px}h1{font-size:32px;margin:0 0 12px;letter-spacing:1px;font-weight:650}h2{font-size:19px;margin:0}h3{font-size:16px;margin:0 0 8px}p{line-height:1.85}.sub{font-size:13px;color:var(--muted);line-height:1.8;margin:0}.hero{background:var(--green);color:#fff;border-radius:19px;padding:30px 32px;display:flex;justify-content:space-between;align-items:center;gap:20px;position:relative;overflow:hidden;margin-top:25px}.hero .sub,.hero .eyebrow{color:#bfd1c6}.hero h2{font-size:24px;margin-bottom:12px}.hero .btn{background:#edf0d9;color:#285c50;border-color:transparent}.hero-count{border-left:1px solid #ffffff35;padding:0 10px 0 35px;text-align:center;min-width:135px}.hero-count strong{font-size:48px;font-weight:400;display:block;font-variant-numeric:tabular-nums}.hero-count small{color:#bfd1c6;font-size:11px}.btn{padding:11px 18px;background:var(--green);color:white;border:1px solid var(--green);border-radius:9px;font-size:13px;display:inline-flex;justify-content:center;align-items:center;gap:8px;min-height:42px}.btn.secondary{background:var(--paper);color:var(--ink);border-color:var(--line)}.btn.danger{background:#a2493c;border-color:#a2493c}.btn.small{padding:7px 12px;min-height:34px;font-size:12px}.actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:20px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0 30px}.stat{background:var(--paper);border:1px solid var(--line);border-radius:12px;padding:17px 20px}.stat span{display:block;font-size:11px;color:var(--muted);margin-bottom:10px}.stat strong{font-size:25px;font-weight:500}.stat em{font-size:11px;font-style:normal;color:var(--muted);margin-left:5px}.section-title{display:flex;justify-content:space-between;align-items:center;margin:29px 0 16px;gap:10px}.subject-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.card{border:1px solid var(--line);background:var(--paper);border-radius:14px;padding:22px}.subject{position:relative;overflow:hidden}.subject .badge{display:inline-flex;background:var(--soft);color:var(--green);width:38px;height:38px;align-items:center;justify-content:center;border-radius:11px;font-family:serif;font-size:20px;margin-bottom:19px}.subject.english .badge{background:#e9edf4;color:var(--blue)}.subject.politics .badge{background:#f7ede4;color:var(--orange)}.subject h3{font-size:20px}.subject .sub{font-size:11px;min-height:38px}.subject-bottom{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--line);margin-top:20px;padding-top:14px;font-size:11px;color:var(--muted)}.subject-bottom a{color:var(--green);font-size:17px}.columns{display:grid;grid-template-columns:1.35fr 1fr;gap:20px}.task{display:flex;gap:12px;align-items:center;padding:16px 0;border-bottom:1px solid var(--line)}.task:last-child{border:0}.task input{accent-color:var(--green);width:19px;height:19px;flex-shrink:0}.task label{flex:1;cursor:pointer;line-height:1.5;font-size:13px;word-break:break-word}.task.done label{text-decoration:line-through;color:var(--muted)}.task small{display:block;font-size:10px;color:var(--muted);margin-top:5px}.tag{font-size:10px;padding:5px 8px;border-radius:6px;background:var(--soft);color:var(--green);display:inline-block}.tag.english{background:#e9edf4;color:var(--blue)}.tag.politics{background:#f7ede4;color:var(--orange)}.notice{padding:14px 17px;background:#f4edda;border-radius:10px;font-size:12px;color:#7f7048;line-height:1.8;margin:16px 0}.empty{text-align:center;color:var(--muted);padding:30px 14px;font-size:13px;line-height:2}.empty .symbol{font-size:28px;display:block;color:#a0b1a3;margin-bottom:10px}.filters{display:flex;gap:9px;flex-wrap:wrap;margin:22px 0}.filters select,.filters input{width:auto;flex:1;min-width:120px}.list{display:grid;gap:12px}.question{display:flex;gap:15px;align-items:start}.question .q-main{flex:1;min-width:0}.question h3{font-size:15px;line-height:1.7;margin:10px 0}.question p{font-size:12px;color:var(--muted);margin:0;white-space:pre-wrap}.question .actions{margin-top:12px}.pill-row{display:flex;gap:7px;flex-wrap:wrap}.label{font-size:10px;color:var(--muted);border:1px solid var(--line);border-radius:5px;padding:4px 7px}.review-box{margin-top:20px;border:1px dashed #9eafa3;border-radius:10px;padding:20px;background:#f5f8f1;line-height:1.9;font-size:14px;white-space:pre-wrap}.quiz-card{max-width:760px;margin:25px auto}.quiz-card h2{line-height:1.8;margin:20px 0}.quiz-card textarea{min-height:180px}label.field{display:block;font-size:12px;color:var(--muted);margin:16px 0}label.field input,label.field select,label.field textarea{margin-top:8px}input,select,textarea{width:100%;padding:12px;border:1px solid #dce1d7;border-radius:8px;background:var(--paper);color:var(--ink);outline-color:var(--green);min-height:44px}textarea{resize:vertical;line-height:1.8;min-height:100px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:0 15px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.settings-grid h2{margin-bottom:15px}.progress{height:6px;background:#e7eae2;border-radius:20px;margin-top:15px;overflow:hidden}.progress span{display:block;height:100%;background:#7d9b75}.note-body{font-size:13px;line-height:1.9;white-space:pre-wrap;overflow-wrap:anywhere;max-height:160px;overflow:auto;margin-top:15px}.note-source{font-size:11px;color:var(--green);display:block;margin-top:12px;overflow-wrap:anywhere}.focus-time{font-size:57px;font-variant-numeric:tabular-nums;font-weight:300;letter-spacing:2px;margin:18px 0}.focus-card{text-align:center;background:#efefe2}.focus-card p{font-size:12px;color:var(--muted)}.tabs{display:flex;gap:7px;margin:15px 0;flex-wrap:wrap}.tabs button{border:1px solid var(--line);border-radius:30px;background:transparent;padding:9px 15px;font-size:12px;color:var(--muted)}.tabs button.active{background:var(--green);color:white}.mobile-nav{display:none}footer{display:flex;justify-content:space-between;color:#92998f;font-size:10px;margin:35px 0 5px;gap:12px}dialog{border:0;border-radius:18px;width:min(550px,92vw);padding:28px;color:var(--ink);background:var(--paper);max-height:90vh}dialog::backdrop{background:#20392d66;backdrop-filter:blur(3px)}dialog h2{font-size:22px}dialog .close{float:right;border:0;background:none;font-size:24px;color:var(--muted)}#toast{position:fixed;left:50%;bottom:100px;transform:translateX(-50%);padding:12px 22px;border-radius:9px;background:#203f34;color:white;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s;z-index:100;max-width:90vw}#toast.show{opacity:1}details{font-size:13px;line-height:1.9}summary{cursor:pointer;color:var(--green)}.file{display:none}.muted{color:var(--muted)}.heading-row{display:flex;align-items:start;justify-content:space-between;gap:20px}.line-list{font-size:13px;line-height:2;color:var(--muted);padding-left:20px}.offline-chip{font-size:10px}.delete{border:0;background:none;color:#a1a79f;min-width:32px;min-height:32px}.count{font-variant-numeric:tabular-nums}
@media(min-width:1450px){main{padding:35px 60px}}
@media(max-width:1000px){.sidebar{width:190px;padding:30px 18px}main{width:calc(100% - 190px);padding:25px}.subject-grid{gap:10px}.card{padding:18px}.columns{grid-template-columns:1fr}.settings-grid{grid-template-columns:1fr}}
@media(max-width:700px){.sidebar{display:none}main{width:100%;padding:20px 18px 96px}header{margin-bottom:22px}h1{font-size:28px}.eyebrow{font-size:10px}.hero{padding:25px 20px;margin-top:22px;border-radius:15px;gap:12px}.hero h2{font-size:19px}.hero .sub{font-size:11px}.hero-count{padding:0 0 0 17px;min-width:85px}.hero-count strong{font-size:36px}.hero-count small{font-size:9px}.stats{grid-template-columns:repeat(2,1fr);gap:10px;margin:15px 0 23px}.stat{padding:14px 17px}.stat span{font-size:11px;margin-bottom:7px}.stat strong{font-size:23px}.subject-grid{grid-template-columns:1fr;gap:10px}.subject{display:grid;grid-template-columns:42px 1fr 65px;align-items:center;gap:13px;padding:17px}.subject .badge{margin:0;width:40px;height:40px}.subject h3{font-size:17px;margin-bottom:5px}.subject .sub{min-height:0;font-size:10px}.subject-bottom{border:0;padding:0;margin:0;display:flex;flex-direction:column;gap:6px;font-size:9px}.section-title{margin-top:25px}.section-title h2{font-size:18px}.mobile-nav{display:flex;flex-direction:row;position:fixed;bottom:0;left:0;right:0;margin:0;border-top:1px solid var(--line);background:#fffefbf5;backdrop-filter:blur(16px);padding:8px 5px calc(8px + env(safe-area-inset-bottom));gap:0;z-index:20;justify-content:space-around}.mobile-nav a{flex-direction:column;gap:4px;padding:5px 7px;font-size:10px;border-radius:9px;min-width:52px}.mobile-nav .navicon{font-size:20px}.columns{gap:0}.settings-grid{gap:12px}.form-grid{grid-template-columns:1fr}.question{display:block}.filters{gap:7px}.filters input{flex-basis:100%}.filters select{min-width:90px;font-size:12px}footer{flex-direction:column;line-height:1.5}.heading-row{gap:8px}.heading-row .btn{font-size:11px;padding:10px}.quiz-card{margin-top:17px}.quiz-card h2{font-size:18px}.review-box{padding:15px;font-size:13px}dialog{padding:22px}.hero .actions{margin-top:16px}}