@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-400.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-500.woff2) format("woff2");font-weight:500;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-600.woff2) format("woff2");font-weight:600;font-display:swap}@font-face{font-family:DM Sans;src:url(/fonts/dm-sans-700.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Manrope;src:url(/fonts/manrope-400.woff2) format("woff2");font-weight:400;font-display:swap}@font-face{font-family:Manrope;src:url(/fonts/manrope-600.woff2) format("woff2");font-weight:600;font-display:swap}@font-face{font-family:Manrope;src:url(/fonts/manrope-700.woff2) format("woff2");font-weight:700;font-display:swap}@font-face{font-family:Manrope;src:url(/fonts/manrope-800.woff2) format("woff2");font-weight:800;font-display:swap}:root{--c-base: oklch(12% .018 265);--c-surf: oklch(17% .022 265);--c-raised: oklch(21% .025 265);--c-overlay: oklch(26% .022 265);--c-bd: oklch(30% .02 265);--c-bd-s: oklch(22% .016 265);--c-text: oklch(93% .006 265);--c-body: oklch(80% .01 265);--c-muted: oklch(56% .014 265);--c-dim: oklch(40% .01 265);--c-accent: oklch(74% .14 58);--c-accent-d: oklch(68% .14 58);--c-accent-b: oklch(20% .055 58);--c-ok: oklch(65% .13 152);--c-ok-b: oklch(16% .05 152);--c-err: oklch(62% .14 22);--c-err-b: oklch(17% .05 22);--t-mint: oklch(18% .04 165);--i-mint: oklch(62% .1 165);--t-peach: oklch(19% .04 45);--i-peach: oklch(68% .1 45);--t-lav: oklch(18% .04 290);--i-lav: oklch(64% .1 290);--t-yel: oklch(19% .05 80);--i-yel: oklch(72% .11 80);--t-blue: oklch(17% .04 240);--i-blue: oklch(62% .1 240);--green: var(--c-ok);--muted: var(--c-muted);--border: var(--c-bd);font-family:DM Sans,sans-serif;font-size:14px;color:var(--c-body);background:var(--c-base);font-synthesis:none}*,*:before,*:after{box-sizing:border-box}body,h1,h2,h3,h4,p{margin:0}h1,h2,h3,h4,.brand{font-family:Manrope,sans-serif;color:var(--c-text)}a{color:inherit;text-decoration:none}button,select{font:inherit;cursor:pointer;color:inherit}button{border:none;background:transparent;transition:opacity .16s,transform .16s,background .18s,border-color .18s,color .18s}button:hover{opacity:.8}button:active{transform:scale(.98)}button:focus-visible,a:focus-visible,select:focus-visible{outline:2px solid var(--c-accent);outline-offset:3px}button svg{flex-shrink:0}.app{display:flex;min-height:100vh}.sidebar{width:244px;background:var(--c-surf);position:fixed;inset:0 auto 0 0;display:flex;flex-direction:column;padding:32px 20px 22px;border-right:1px solid var(--c-bd-s);z-index:20}.brand{display:flex;align-items:center;font-size:26px;letter-spacing:-1.4px;font-weight:800;color:var(--c-text)}.brand-icon{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:10px;background:var(--c-accent-b);color:var(--c-accent);margin-right:10px;flex-shrink:0}.brand-dot{color:var(--c-accent)}.workspace{margin-top:32px;display:flex;gap:10px;align-items:center;padding-bottom:26px;border-bottom:1px solid var(--c-bd-s);font-size:12px;font-weight:600;color:var(--c-text)}.workspace small,.profile small{display:block;color:var(--c-muted);font-size:10px;font-weight:400;margin-top:3px}.flag{width:30px;height:30px;border-radius:50%;background:#200909;color:#c46665;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}.nav-label{font-size:9px;letter-spacing:1.4px;color:var(--c-dim);margin:26px 12px 14px;font-weight:600;text-transform:uppercase}nav{display:grid;gap:3px}nav button{border:none;background:transparent;display:flex;align-items:center;gap:12px;height:44px;padding:0 12px;text-align:left;font-size:12px;color:var(--c-muted);border-radius:8px}nav button:hover{background:var(--c-raised);color:var(--c-body);opacity:1}nav button.selected{color:var(--c-accent);background:var(--c-accent-b);font-weight:600}nav .nav-dot{width:5px;height:5px;background:var(--c-accent);border-radius:50%;margin-left:auto}.sidebar-note{margin-top:auto;padding:17px 15px;background:var(--c-raised);border:1px solid var(--c-bd-s);border-radius:10px;margin-bottom:26px}.note-icon{color:var(--c-accent);margin-bottom:10px;display:inline-flex}.sidebar-note h4{font-size:12px;line-height:1.7;color:var(--c-text)}.sidebar-note p{font-size:11px;line-height:1.75;color:var(--c-muted);margin-top:7px}.sidebar-note>div:last-child{font-size:10px;font-weight:600;margin-top:16px;color:var(--c-body)}.sidebar-note>div:last-child span{font-size:9px;font-weight:400;color:var(--c-muted);margin-left:5px}.profile{display:flex;align-items:center;gap:9px;padding:16px 0 0;border-top:1px solid var(--c-bd-s);font-size:11px;font-weight:600;color:var(--c-text)}.profile>svg{margin-left:auto;color:var(--c-dim)}.avatar,.header-avatar{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:var(--c-accent-b);border:2px solid var(--c-surf);border-radius:50%;color:var(--c-accent);font-weight:700;font-size:13px;flex-shrink:0}.main-shell{margin-left:244px;width:calc(100% - 244px)}.topbar{height:66px;background:var(--c-surf);border-bottom:1px solid var(--c-bd-s);padding:0 40px;display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}.breadcrumb{display:flex;gap:12px;align-items:center;font-size:11px}.breadcrumb>span{color:var(--c-dim)}.breadcrumb svg{color:var(--c-dim)}.breadcrumb b{font-weight:500;color:var(--c-body)}.top-right{display:flex;align-items:center;gap:22px}.quiz-date{font-size:11px;background:var(--c-accent-b);border:1px solid oklch(27% .07 58);color:var(--c-accent);padding:7px 10px;border-radius:6px;display:flex;gap:7px;align-items:center}.quiz-date>span{width:5px;height:5px;border-radius:50%;background:var(--c-accent)}.header-avatar{width:30px;height:30px;font-size:11px}.mobile-toggle{display:none}main{max-width:1340px;margin:0 auto;padding:36px 40px 0}.eyebrow{font-size:9px;letter-spacing:1.5px;color:var(--c-muted);font-weight:600;text-transform:uppercase}.page-heading{margin-bottom:26px}.page-heading h1{font-size:28px;letter-spacing:-1.2px;font-weight:800;margin:10px 0 8px;color:var(--c-text)}.page-heading h1>span{color:var(--c-accent)}.page-heading p{font-size:12px;color:var(--c-muted);line-height:1.7}.hero{background:var(--c-surf);border:1px solid var(--c-bd-s);position:relative;min-height:280px;border-radius:12px;overflow:hidden;color:var(--c-body)}.hero-text{position:relative;z-index:2;padding:28px 30px;width:62%}.hero-tag{display:inline-flex;align-items:center;gap:7px;padding:5px 9px;border:1px solid var(--c-bd);border-radius:4px;font-size:8px;letter-spacing:1px;color:var(--c-muted);background:var(--c-raised)}.hero h2{font-size:28px;font-weight:700;letter-spacing:-.7px;line-height:1.3;margin:14px 0 11px;color:var(--c-text)}.hero p{font-size:11px;line-height:1.85;color:var(--c-muted)}.hero-meta{display:flex;align-items:center;gap:5px;font-size:9px;color:var(--c-dim);margin-top:12px}.istanbul{position:absolute;right:0;bottom:0;width:46%;height:100%;object-fit:cover;opacity:.18}.hero-caption{position:absolute;bottom:22px;right:30px;font-size:10px;letter-spacing:.3px;text-align:right;color:var(--c-muted);z-index:2}.hero-caption small{display:block;font-size:8px;color:var(--c-dim);margin-top:4px}.primary{background:var(--c-accent);border:1px solid var(--c-accent);color:#03060c;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;gap:10px;font-size:12px;font-weight:700;padding:11px 17px;min-height:40px}.primary:hover{background:var(--c-accent-d);border-color:var(--c-accent-d);opacity:1}.primary.light{background:var(--c-accent-b);border-color:#3d1d00;border-color:oklch(27% .07 58);color:var(--c-accent);margin-top:20px}.outline{border:1px solid var(--c-bd);border-radius:7px;background:var(--c-surf);font-size:11px;font-weight:600;display:inline-flex;align-items:center;justify-content:center;padding:10px 16px;gap:10px;min-height:40px;color:var(--c-body)}.outline:hover{border-color:var(--c-muted);opacity:1}.text-button{border:none;background:transparent;display:inline-flex;align-items:center;justify-content:center;gap:8px;color:var(--c-accent);font-size:11px;font-weight:600;padding:0}.stats{display:grid;grid-template-columns:1fr 1.2fr 1.2fr;margin:22px 0 32px;padding:18px 20px;background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:10px}.stats>div{display:flex;align-items:center;gap:13px;padding-left:22px;border-left:1px solid var(--c-bd-s)}.stats>div:first-child{padding-left:0;border:none}.stat-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:9px;flex-shrink:0}.mint{background:var(--t-mint);color:var(--i-mint)}.peach{background:var(--t-peach);color:var(--i-peach)}.lavender{background:var(--t-lav);color:var(--i-lav)}.yellow{background:var(--t-yel);color:var(--i-yel)}.blue{background:var(--t-blue);color:var(--i-blue)}.stats strong{font-size:18px;font-family:Manrope,sans-serif;font-weight:800;color:var(--c-text)}.stats strong small{font-family:DM Sans,sans-serif;font-size:11px;font-weight:500;margin-left:3px;color:var(--c-body)}.stats p{font-size:9px;color:var(--c-muted);margin-top:4px}.content-columns{display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:24px}.section-heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:17px}.section-heading h2{font-size:17px;letter-spacing:-.4px;color:var(--c-text)}.section-heading p{font-size:11px;color:var(--c-muted);margin-top:5px}.small-badge{font-size:8px;padding:5px 8px;border:1px solid var(--c-bd-s);background:var(--c-raised);color:var(--c-dim);letter-spacing:1px;border-radius:4px}.lesson-list{display:grid;gap:9px}.lesson-row{background:var(--c-surf);border:1px solid var(--c-bd-s);padding:16px 18px;display:flex;align-items:center;text-align:left;border-radius:9px;gap:14px;width:100%;transition:border-color .16s,transform .16s}.lesson-row:hover{border-color:var(--c-bd);transform:translate(2px);opacity:1}.lesson-icon{width:46px;height:46px;display:flex;align-items:center;justify-content:center;border-radius:9px;flex-shrink:0}.lesson-icon b{font-family:Manrope,sans-serif;font-size:19px;font-weight:700}.lesson-icon.mint b{font-size:14px}.lesson-number{font-size:8px;letter-spacing:1px;color:var(--c-dim);font-weight:500}.lesson-number>span{letter-spacing:0;color:var(--c-muted);font-size:9px;margin-left:3px}.lesson-info h3{font-size:13px;margin:5px 0;letter-spacing:-.1px;color:var(--c-text)}.lesson-info p{font-size:10px;color:var(--c-muted)}.lesson-end{display:flex;gap:14px;margin-left:auto;align-items:center;color:var(--c-dim)}.lesson-end>span{display:flex;align-items:center;gap:4px;font-size:9px;white-space:nowrap}.lesson-end>svg{width:15px;color:var(--c-dim)}.progress-card{background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:10px;padding:18px 19px}.card-heading{display:flex;justify-content:space-between;align-items:center}.card-heading h3{font-size:13px;color:var(--c-text)}.mini-icon{display:flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:7px}.ring{width:132px;height:132px;border-radius:50%;background:conic-gradient(var(--c-accent) var(--progress),var(--c-bd-s) 0);padding:9px;margin:20px auto 14px;transform:rotate(-90deg)}.ring>div{background:var(--c-surf);width:100%;height:100%;border-radius:50%;display:flex;flex-direction:column;align-items:center;justify-content:center;transform:rotate(90deg)}.ring strong{font-size:26px;letter-spacing:-1px;color:var(--c-text)}.ring span{font-size:8px;color:var(--c-muted);margin-top:3px}.progress-copy{font-size:9px;text-align:center;color:var(--c-muted);margin-bottom:20px;line-height:1.6}.progress-line{font-size:10px;display:flex;justify-content:space-between;margin-top:12px;color:var(--c-muted)}.progress-line b{font-size:10px;font-weight:600;color:var(--c-body)}.progress-card .text-button{margin-top:18px;border-top:1px solid var(--c-bd-s);padding-top:14px;width:100%}.quiz-callout{padding:18px 19px;border:1px solid var(--c-bd-s);background:var(--c-raised);border-radius:10px;margin-top:14px}.quiz-callout-icon{display:inline-flex;color:var(--c-muted);padding:8px;background:var(--c-overlay);border-radius:8px;margin-bottom:10px}.quiz-callout h3{font-size:12px;letter-spacing:-.2px;color:var(--c-text)}.quiz-callout p{font-size:10px;line-height:1.8;color:var(--c-muted);margin-top:6px}.quiz-callout .outline{margin-top:13px;width:100%;font-size:10px;background:transparent}.quiz-callout>span:last-child{display:block;font-size:8px;text-align:center;color:var(--c-dim);margin-top:9px}.source-note{display:flex;gap:9px;justify-content:center;margin-top:15px;color:var(--c-dim)}.source-note p{font-size:9px;line-height:1.7;color:var(--c-muted)}.source-note b{font-weight:600;color:var(--c-body)}.daily-phrase{margin-top:26px;background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:9px;display:flex;gap:17px;align-items:center;padding:18px 22px}.phrase-icon{color:var(--c-muted)}.daily-phrase .eyebrow{font-size:8px;letter-spacing:1.2px}.daily-phrase h3{font-size:15px;font-weight:500;margin-top:6px;color:var(--c-text)}.daily-phrase h3 span{font-family:DM Sans,sans-serif;font-size:11px;color:var(--c-muted);font-weight:400;margin-left:16px}.daily-phrase button{background:var(--c-raised);border:1px solid var(--c-bd-s);display:flex;padding:8px;border-radius:50%;margin-left:auto;color:var(--c-muted)}footer{display:flex;justify-content:space-between;margin:28px 0 22px;color:var(--c-dim);font-size:9px}footer>span:last-child{display:flex;align-items:center;gap:6px}.filters{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:22px}.filters button{padding:8px 13px;background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:6px;font-size:11px;color:var(--c-muted)}.filters button.active{background:var(--c-accent-b);border-color:#3d1d00;border-color:oklch(27% .07 58);color:var(--c-accent)}.filters button:hover{opacity:1;border-color:var(--c-bd);color:var(--c-body)}.study-layout{display:grid;grid-template-columns:minmax(0,1fr) 272px;gap:24px}.flashcard-top,.question-top{display:flex;justify-content:space-between;font-size:11px;color:var(--c-muted);margin-bottom:14px}.flashcard{position:relative;height:330px;border-radius:13px;border:1px solid var(--c-bd-s);background:var(--c-surf);display:flex;align-items:center;flex-direction:column;justify-content:center;padding:32px}.flashcard.flipped{background:var(--c-accent-b);border-color:#3d1d00;border-color:oklch(27% .07 58)}.flashcard>.eyebrow{position:absolute;top:32px}.card-flip{border:none;background:transparent;width:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%}.card-flip h2{font-size:32px;font-weight:700;letter-spacing:-.7px;color:var(--c-text)}.card-flip>span{margin-top:22px;display:flex;align-items:center;gap:8px;font-size:10px;color:var(--c-muted)}.audio-button{border:1px solid var(--c-bd-s);background:var(--c-raised);width:38px;height:38px;border-radius:50%;display:grid;place-items:center;color:var(--c-muted);position:absolute;bottom:28px}.known-badge{position:absolute;top:14px;right:14px;display:flex;gap:4px;align-items:center;font-size:9px;color:var(--c-ok)}.flashcard-actions{display:flex;gap:12px;margin-top:16px}.flashcard-actions>button{flex:1}.card-pagination{display:flex;align-items:center;gap:14px;max-width:250px;margin:22px auto}.card-pagination>button{display:flex;color:var(--c-muted)}.mini-track{background:var(--c-bd-s);height:4px;border-radius:9px;flex:1;overflow:hidden}.mini-track>span{display:block;height:100%;background:var(--c-accent);border-radius:9px;transition:width .2s}.study-notes{background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:12px;padding:24px;height:fit-content}.study-notes h3{font-size:15px;margin-bottom:14px;color:var(--c-text)}.study-notes p{font-size:12px;color:var(--c-muted);line-height:1.9}.study-notes>button{width:100%;margin-top:16px;font-size:11px}.study-notes>button+button{margin-top:9px}.lesson-toolbar{display:flex;justify-content:space-between;margin-bottom:22px}.quiz-setup,.results{background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:13px;padding:44px;text-align:center;max-width:740px;margin:0 auto}.big-icon{width:72px;height:72px;background:var(--c-raised);border-radius:19px;display:grid;place-items:center;margin:0 auto 22px;color:var(--c-muted)}.quiz-setup h2{font-size:22px;letter-spacing:-.5px;margin-bottom:13px;color:var(--c-text)}.quiz-setup p{font-size:12px;line-height:1.85;color:var(--c-muted)}.quiz-setup label{display:block;font-size:11px;margin:28px 0 10px;color:var(--c-body)}.quiz-setup select{display:block;width:100%;max-width:340px;margin:0 auto 14px;background:var(--c-raised);border:1px solid var(--c-bd);border-radius:7px;color:var(--c-body);padding:11px 12px;font-size:12px}.quiz-setup .primary{width:100%;max-width:340px}.quiz-setup small{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:17px;color:var(--c-dim);font-size:10px}.quiz-question{background:var(--c-surf);border:1px solid var(--c-bd-s);border-radius:13px;padding:28px;max-width:740px;margin:0 auto}.question-progress{height:4px;border-radius:9px;background:var(--c-bd-s);overflow:hidden}.question-progress span{display:block;height:100%;background:var(--c-accent)}.quiz-question h2{font-size:22px;letter-spacing:-.5px;margin:32px 0 26px;line-height:1.5;color:var(--c-text)}.options{display:grid;gap:10px}.options button{background:var(--c-raised);border:1px solid 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span{font-size:24px;color:var(--c-muted)}.results>p{color:var(--c-muted);font-size:12px;margin-top:11px}.results-actions{display:flex;gap:10px;justify-content:center;margin-top:24px}.answer-review{margin-top:28px;text-align:left}.answer-review>div{display:flex;gap:12px;padding:17px 0;border-top:1px solid var(--c-bd-s)}.answer-review h4{font-size:12px;line-height:1.7;color:var(--c-text)}.answer-review p{font-size:11px;line-height:1.8;color:var(--c-muted);margin-top:4px}.correct-icon{color:var(--c-ok)}.wrong-icon{color:var(--c-err)}.progress-stats{margin-top:34px}.progress-lessons{display:grid;gap:9px}.progress-lessons button{border:1px solid var(--c-bd-s);background:var(--c-surf);border-radius:9px;padding:21px;display:flex;align-items:center;gap:24px;text-align:left}.progress-lessons button>div:first-child{width:250px}.progress-lessons h3{font-size:14px;color:var(--c-text)}.progress-lessons p{font-size:11px;color:var(--c-muted);margin-top:5px}.progress-lessons 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