:root{--bg:#f5f7fb;--card:#fff;--soft:#eef2f7;--text:#121722;--muted:#697386;--line:#e2e7ef;--red:#b5121b;--red2:#8e0d14;--green:#16845a;--gold:#b87b12;--shadow:0 16px 45px rgba(16,24,40,.07);--r:18px}
[data-theme=dark]{--bg:#0b0f15;--card:#131922;--soft:#1a222e;--text:#f5f7fa;--muted:#98a4b4;--line:#283241;--shadow:0 18px 50px rgba(0,0,0,.3)}
*{box-sizing:border-box}html,body{margin:0;background:var(--bg);color:var(--text);font-family:"DM Sans",system-ui,sans-serif}button,input,select{font:inherit}button{cursor:pointer}
.sidebar{position:fixed;left:0;top:0;bottom:0;width:252px;background:var(--card);border-right:1px solid var(--line);padding:25px 16px;display:flex;flex-direction:column;z-index:20}.brand{display:flex;gap:12px;align-items:center;padding:0 10px 28px}.brandMark{width:41px;height:41px;border-radius:13px;background:var(--red);color:white;display:grid;place-items:center;font:700 22px "Space Grotesk"}.brand b{display:block;font:700 19px "Space Grotesk"}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:2px}
nav{display:grid;gap:5px}.nav,.theme{border:0;background:transparent;color:var(--muted);border-radius:12px;padding:12px 13px;text-align:left;display:flex;align-items:center;gap:12px;font-weight:700}.nav:hover,.theme:hover{background:var(--soft);color:var(--text)}.nav.active{background:rgba(181,18,27,.1);color:var(--red)}
.sidebarBottom{margin-top:auto;display:grid;gap:12px}.local{display:flex;gap:9px;background:var(--soft);border:1px solid var(--line);border-radius:14px;padding:12px}.local i{width:8px;height:8px;border-radius:50%;background:#22a66b;margin-top:5px}.local b,.local small{display:block}.local b{font-size:11px}.local small{font-size:10px;color:var(--muted);margin-top:3px}
.main{margin-left:252px;min-height:100vh}.topbar{height:76px;background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10;display:flex;align-items:center;justify-content:space-between;padding:0 34px}.crumb{font:600 15px "Space Grotesk"}.topRight{display:flex;align-items:center;gap:13px}.search{width:350px;height:40px;border:1px solid var(--line);background:var(--soft);border-radius:11px;display:flex;align-items:center;gap:8px;padding:0 12px;color:var(--muted)}.search input{width:100%;border:0;outline:0;background:transparent;color:var(--text);font-size:12px}.avatar{width:36px;height:36px;border-radius:50%;background:var(--red);color:white;display:grid;place-items:center;font-weight:800}.mobile{display:none;border:0;background:transparent;color:var(--text);font-size:20px}
.view{display:none;max-width:1500px;margin:auto;padding:34px}.view.active{display:block}.hero{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:25px}.eyebrow{color:var(--red);font-weight:800;font-size:11px;letter-spacing:1.3px;text-transform:uppercase}h1,h2,h3{font-family:"Space Grotesk";margin:0;letter-spacing:-.5px}h1{font-size:36px;margin-top:5px}.sub{color:var(--muted);font-size:13px;margin-top:8px}.heroBadge{border:1px solid var(--line);background:var(--card);border-radius:12px;padding:10px 13px;color:var(--muted);font-size:11px}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:20px}.stat,.panel,.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}.stat{padding:19px}.stat .label{font-size:10px;color:var(--muted);font-weight:800;letter-spacing:.6px}.stat .num{font:700 29px "Space Grotesk";margin-top:7px}.stat .hint{font-size:10px;color:var(--muted);margin-top:3px}
.two{display:grid;grid-template-columns:1.45fr 1fr;gap:18px}.panel{padding:20px}.panelHead{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.panelHead h2{font-size:18px}.muted{color:var(--muted)}.btn{border:0;border-radius:10px;padding:9px 13px;font-size:11px;font-weight:800}.primary{background:var(--red);color:#fff}.primary:hover{background:var(--red2)}.ghost{background:var(--soft);color:var(--text)}.danger{background:rgba(181,18,27,.1);color:var(--red)}
.list{display:grid;gap:9px}.row{border:1px solid var(--line);border-radius:13px;padding:12px 13px;display:flex;justify-content:space-between;align-items:center;gap:10px}.row:hover{border-color:#bbc3cf}.rowTitle{font-weight:800;font-size:12px}.rowSub{font-size:10px;color:var(--muted);margin-top:4px}.rowLeft{display:flex;align-items:center;gap:10px;min-width:0}.icon{width:38px;height:38px;border-radius:11px;background:rgba(181,18,27,.09);color:var(--red);display:grid;place-items:center;font-weight:900;flex:none}.tag{font-size:9px;font-weight:800;color:var(--muted);background:var(--soft);border-radius:999px;padding:5px 8px;white-space:nowrap}
.subjects{display:grid;grid-template-columns:1fr 1fr;gap:10px}.subject{border:1px solid var(--line);border-radius:14px;padding:16px}.subject b{font-size:12px}.subject .big{font:700 28px "Space Grotesk";margin-top:5px}.subject small{display:block;color:var(--muted);font-size:10px;margin:3px 0 12px}.bar{height:6px;background:var(--soft);border-radius:99px;overflow:hidden}.bar i{display:block;height:100%;background:var(--red)}
.toolbar{display:flex;gap:9px;flex-wrap:wrap;margin:17px 0}.select,.input{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:10px;padding:9px 11px;font-size:11px;outline:0}.input{min-width:230px}
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.testCard{padding:18px;min-height:190px;display:flex;flex-direction:column}.testCard .number{font:700 25px "Space Grotesk";color:var(--red)}.testCard h3{font-size:15px;margin-top:6px;line-height:1.3}.testCard p{font-size:10px;color:var(--muted);line-height:1.55}.testFoot{margin-top:auto;display:flex;justify-content:space-between;align-items:center;gap:8px}
.chapterLayout{display:grid;grid-template-columns:285px 1fr;gap:17px}.chapterSide{padding:15px;position:sticky;top:95px;max-height:calc(100vh - 120px);overflow:auto}.chapterBtn{display:block;width:100%;border:0;background:transparent;color:var(--muted);padding:9px 10px;text-align:left;border-radius:9px;font-size:10px;font-weight:700}.chapterBtn:hover,.chapterBtn.active{background:rgba(181,18,27,.08);color:var(--red)}
.countLine{font-size:10px;color:var(--muted);margin:8px 0 14px}.empty{border:1px dashed var(--line);border-radius:15px;padding:42px;text-align:center;color:var(--muted)}
.quizWrap{max-width:1020px;margin:auto}.quizTop{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.timer{font:700 18px "Space Grotesk";border:1px solid var(--line);background:var(--card);padding:10px 13px;border-radius:12px}.timer.warn{color:var(--red)}.quizBar{height:6px;background:var(--soft);border-radius:99px;overflow:hidden;margin-bottom:17px}.quizBar i{display:block;height:100%;background:var(--red)}.questionCard{padding:28px;background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow)}.qMeta{font-size:10px;color:var(--muted);font-weight:800}.question{font-size:19px;line-height:1.62;margin:13px 0 18px}.question img,.passage img,.answer img{max-width:100%;border-radius:10px}.passage{background:var(--soft);border-radius:13px;padding:15px;line-height:1.65;font-size:12px;margin-bottom:16px}.answers{display:grid;gap:9px}.answer{border:1px solid var(--line);background:var(--card);color:var(--text);border-radius:12px;padding:13px;display:flex;gap:11px;text-align:left;align-items:flex-start}.answer:hover{background:var(--soft)}.answer.selected{border:2px solid var(--red);padding:12px;background:rgba(181,18,27,.05)}.letter{width:27px;height:27px;border-radius:8px;background:var(--soft);display:grid;place-items:center;font-weight:800;flex:none}.quizActions{display:flex;justify-content:space-between;gap:10px;margin-top:18px}.palette{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}.pill{width:30px;height:30px;border:1px solid var(--line);border-radius:8px;background:var(--card);color:var(--text);font-size:10px}.pill.done{background:var(--red);color:#fff;border-color:var(--red)}.pill.current{outline:2px solid rgba(181,18,27,.2)}
.result{text-align:center;padding:32px}.score{font:700 54px "Space Grotesk";color:var(--red);margin:9px}.review{margin-top:16px}.reviewItem{border:1px solid var(--line);border-radius:12px;padding:13px;margin-top:8px;font-size:12px;line-height:1.5}.correct{color:var(--green);font-weight:800}.wrong{color:var(--red);font-weight:800}.toast{position:fixed;right:22px;bottom:22px;background:#111827;color:#fff;padding:11px 14px;border-radius:10px;font-size:11px;opacity:0;transform:translateY(8px);transition:.2s;z-index:50}.toast.show{opacity:1;transform:none}
@media(max-width:1100px){.cards{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}.two{grid-template-columns:1fr}}
@media(max-width:760px){.sidebar{transform:translateX(-100%);transition:.2s}.sidebar.open{transform:none}.main{margin-left:0}.topbar{padding:0 15px}.mobile{display:block}.search{width:54vw}.view{padding:22px 15px}h1{font-size:29px}.hero{flex-direction:column;align-items:flex-start}.cards{grid-template-columns:1fr}.stats{grid-template-columns:1fr 1fr}.chapterLayout{grid-template-columns:1fr}.chapterSide{position:static;max-height:none}.testFoot{flex-wrap:wrap}}