:root{--ink:#183b3b;--muted:#73817f;--bg:#f6f7f3;--line:#e1e7df;--green:#1b4b45;--lime:#d9ee9e;--orange:#cb693e}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:15px 'DM Sans',sans-serif}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:focus-visible,a:focus-visible{outline:3px solid #c47742;outline-offset:3px}button:disabled{opacity:.45;cursor:default}a{color:inherit}#sidebar{position:fixed;inset:0 auto 0 0;width:236px;background:#fff;border-right:1px solid var(--line);padding:36px 25px;display:flex;flex-direction:column;z-index:10}.brand{text-decoration:none;font:800 38px Manrope,sans-serif;letter-spacing:-2px;display:flex;align-items:center;gap:10px}.brandmark{font-size:30px;background:var(--green);color:var(--lime);border-radius:10px;padding:0 8px;letter-spacing:0}.branddot{color:var(--orange);margin-left:-10px}.side-label{font-size:10px;letter-spacing:1.5px;color:var(--muted);margin:52px 12px 16px}nav a{display:flex;align-items:center;gap:13px;text-decoration:none;padding:15px;border-radius:10px;margin:5px 0;font-weight:500;color:#6e7d79}nav a.active{background:#edf2e8;color:var(--green)}nav svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.7}.side-foot{margin-top:auto;font-size:12px;line-height:1.9}.side-foot small{color:var(--muted)}.online-dot{display:inline-block;width:7px;height:7px;background:#72905b;border-radius:50%;margin-right:5px}.shell{margin-left:236px}header{height:90px;padding:0 5%;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between}.breadcrumb{font-size:10px;letter-spacing:1.5px;color:var(--muted)}.breadcrumb span{margin:0 12px;color:#b4bdb5}.breadcrumb b{font-weight:500;color:var(--ink)}.avatar{background:#efe5d8;border:0;width:38px;height:38px;border-radius:50%;color:#765738}main{max-width:1220px;margin:auto;padding:40px 5% 10px}h1,h2,h3{font-family:Manrope,sans-serif}h1{font-size:34px;letter-spacing:-1.2px;margin:8px 0 10px}h2{font-size:21px;letter-spacing:-.5px;margin:0}h3{font-size:17px;margin:10px 0}.eyebrow{font-size:10px;letter-spacing:1.7px;font-weight:700;text-transform:uppercase}.muted{color:var(--muted)}p{line-height:1.65}.intro{margin-bottom:28px}.intro p{margin:0}.hero{background:var(--green);color:#fff;border-radius:18px;padding:32px;display:grid;grid-template-columns:1.5fr 1fr;gap:25px;position:relative;overflow:hidden}.hero .eyebrow{color:var(--lime)}.hero h2{font-size:31px;line-height:1.3;max-width:430px;margin:15px 0}.hero p{color:#c9d9d1;max-width:390px;font-size:13px}.hero-art{display:flex;align-items:center;justify-content:center;position:relative;min-height:180px}.book-art{width:110px;height:155px;background:#e5ead3;transform:rotate(-12deg);border-radius:4px 12px 12px 4px;box-shadow:12px 15px 0 #103b37,17px 18px 0 #759275;position:relative;padding:20px 14px;color:#244a41}.book-art:before{content:'';position:absolute;left:8px;top:0;bottom:0;border-left:1px solid #b8c4a4}.book-art span{display:block;font-size:9px;letter-spacing:1px;margin:0 0 10px 5px}.book-art strong{font-family:Manrope;font-size:16px;line-height:1.4;display:block;margin-left:5px}.art-circle{position:absolute;width:210px;height:210px;border:1px solid #50726a;border-radius:50%}.art-circle:after{content:'';position:absolute;inset:15px;border:1px dashed #50726a;border-radius:50%}.btn{border:1px solid var(--line);background:white;color:var(--ink);padding:13px 19px;border-radius:9px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;gap:9px;text-decoration:none;min-height:46px}.btn.primary{background:var(--green);color:white;border-color:var(--green)}.btn.lime{background:var(--lime);color:#183c32;border-color:var(--lime)}.btn.ghost{background:transparent}.hero .btn.ghost{color:white;border-color:#6f8c81}.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}.between{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:30px 0 17px}.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin:20px 0 30px}.stat{background:white;border:1px solid var(--line);border-radius:12px;padding:20px}.stat .value{font:700 27px Manrope;margin:9px 0 4px}.stat small{color:var(--muted);font-size:11px}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.card{background:white;border:1px solid var(--line);border-radius:14px;padding:24px;min-width:0}.card p{font-size:13px}.book-cover{height:130px;border-radius:8px;background:#ede9de;display:flex;align-items:center;justify-content:space-between;padding:24px;margin-bottom:20px;overflow:hidden}.book-cover.blue{background:#e5ebed}.book-cover .booknum{font:500 85px Manrope;color:#b8bda8;opacity:.8}.book-cover.blue .booknum{color:#b0c0c5}.tag{font-size:10px;padding:5px 9px;border-radius:5px;background:#eef3e6;color:#466644;display:inline-block;letter-spacing:.3px}.tag.orange{background:#faf0e6;color:#a76b39}.section-link{font-size:12px;text-decoration:none;font-weight:600}.split{display:grid;grid-template-columns:1.6fr 1fr;gap:20px}.listen-card{background:#ebeede;border:none}.listen-card .headphone{font-size:28px;color:#617a50}.listitem{padding:15px 0;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:15px}.listitem:last-child{border:0}.listitem .num{color:#8b978c;font:500 12px Manrope;min-width:25px}.listitem strong{font-size:13px}.listitem p{margin:4px 0;font-size:11px;color:var(--muted)}.listitem button{margin-left:auto}.notice{background:#f4eedf;border-radius:10px;padding:14px 18px;font-size:12px;line-height:1.6;color:#796746;margin:18px 0}.fields{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0}label{display:flex;flex-direction:column;gap:8px;font-size:12px;flex:1;min-width:140px}input,select{border:1px solid #d9e0d7;background:white;border-radius:8px;padding:13px;color:var(--ink);min-height:46px;width:100%;font-size:16px}.page-toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.page-toolbar input{width:85px}.page-image{max-width:100%;height:auto;display:block;margin:20px auto;border-radius:8px}.ocr{white-space:pre-wrap;font:14px/1.8 'DM Sans',sans-serif;overflow-wrap:anywhere;max-height:600px;overflow:auto}.tabs{display:flex;gap:8px;margin:20px 0}.tabs button{flex:1}.option{display:flex;text-align:left;align-items:center;gap:14px;background:#fff;border:1px solid var(--line);padding:17px;border-radius:10px;width:100%;margin:12px 0;line-height:1.5;min-height:55px}.option span{border:1px solid var(--line);border-radius:6px;min-width:30px;padding:4px;text-align:center}.option.selected{border-color:var(--green);background:#f0f5e9}.option.correct{border-color:#5c8c53;background:#edf5e8}.option.wrong{border-color:#c7775c;background:#fff1eb}.question{font:600 23px/1.5 Manrope;margin:25px 0}.explain{background:#edf3e6;padding:22px;border-radius:10px;line-height:1.7;margin:20px 0}.progress-track{height:5px;background:#e6ebdf;border-radius:5px;margin:18px 0;overflow:hidden}.progress-fill{height:100%;background:#73985b}.score{font:700 60px Manrope;margin:18px 0}.audio-center{text-align:center;padding:30px 15px}.audio-disc{width:110px;height:110px;background:#eaf0df;border-radius:50%;display:grid;place-items:center;margin:0 auto 20px;font-size:42px}.session-item{display:flex;gap:12px;padding:15px 0;align-items:flex-start;border-bottom:1px solid var(--line)}.session-item strong{font-size:13px}.session-item p{font-size:12px;margin:5px 0}footer{padding:30px 5% 40px;color:var(--muted);font-size:10px}#mobilenav{display:none}#player{position:fixed;bottom:20px;left:260px;right:24px;z-index:30;background:#153e39;color:white;box-shadow:0 10px 40px #183b3b30;padding:14px 20px;border-radius:12px;align-items:center;gap:14px}#player:not([hidden]){display:flex}#player .btn{padding:8px;min-height:40px;background:transparent;border-color:#567970;color:white}#player .player-info{flex:1;min-width:0}#player small{color:#c2d6c5}.player-info strong{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px}#toast{position:fixed;left:50%;bottom:110px;transform:translateX(-50%);background:#173c38;color:white;padding:12px 20px;border-radius:9px;display:none;z-index:80;font-size:13px;max-width:90%}.empty{text-align:center;padding:35px 10px;color:var(--muted)}.searchhit{display:block;text-align:left;width:100%;border:0;background:transparent;border-bottom:1px solid var(--line);padding:18px 0;color:var(--ink)}.searchhit p{font-size:13px;margin:8px 0}.check{display:flex;flex-direction:row;align-items:center;min-width:0}.check input{width:20px;min-height:20px}.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}
@media(min-width:1450px){main{padding-top:50px}.hero{padding:40px}}@media(max-width:1050px){#sidebar{width:190px;padding:30px 16px}.shell{margin-left:190px}.stats{gap:9px}.stat{padding:15px}.split{grid-template-columns:1fr}#player{left:210px}.hero h2{font-size:27px}}@media(max-width:700px){#sidebar{display:none}.shell{margin-left:0}header{height:65px;padding:0 20px}.breadcrumb{font-size:9px;letter-spacing:1px}main{padding:26px 20px 15px}h1{font-size:28px}.intro{margin-bottom:23px}.intro p{font-size:13px}.hero{padding:25px;grid-template-columns:1fr;gap:0}.hero-art{display:none}.hero h2{font-size:27px;margin:12px 0}.hero p{font-size:12px}.hero .row{margin-top:18px}.hero .btn{font-size:12px}.stats{grid-template-columns:repeat(2,1fr);margin:15px 0 25px;gap:10px}.stat{padding:16px}.stat .value{font-size:25px}.grid{grid-template-columns:1fr}.card{padding:20px}.between{margin-top:26px}h2{font-size:19px}#mobilenav{display:flex;position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);z-index:40;padding:4px 6px max(5px,env(safe-area-inset-bottom))}#mobilenav a{flex:1;min-width:0;display:flex;flex-direction:column;gap:5px;padding:9px 0;margin:0;font-size:10px;border-radius:9px}#mobilenav svg{width:20px;height:20px}footer{padding-bottom:105px}.question{font-size:20px}.page-toolbar .btn{padding:11px}.page-toolbar{gap:7px}.page-toolbar input{width:65px}#player{left:12px;right:12px;bottom:85px;padding:12px;gap:8px}#player .btn{font-size:12px}.player-info strong{max-width:150px}.audio-center{padding:20px 0}.notice{font-size:12px}.fields{gap:10px}.book-cover{height:110px}body:has(#player:not([hidden])) footer{padding-bottom:190px}}@media(prefers-reduced-motion:no-preference){main{animation:appear .25s ease}@keyframes appear{from{opacity:.5;transform:translateY(5px)}to{opacity:1;transform:none}}}