@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Playfair+Display:wght@700&display=swap");:root{--bg:#f7f7fb;--surface:#fff;--primary:#6c5ce7;--primary-light:#a29bfe;--primary-dark:#5a4bd1;--accent:#ff6b6b;--accent-warm:#feca57;--success:#00b894;--error:#ff6b6b;--text:#2d3436;--text-secondary:#636e72;--text-muted:#b2bec3;--border:#e8e8f0;--shadow:0 2px 16px rgba(108,92,231,.08);--shadow-lg:0 8px 32px rgba(108,92,231,.12);--radius:16px;--radius-sm:10px;--nav-height:56px}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:Inter,-apple-system,sans-serif;background:var(--bg);color:var(--text);min-height:100dvh;overflow-x:hidden;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}.page{min-height:100dvh;padding:calc(var(--nav-height) + 16px) 20px 32px;max-width:480px;margin:0 auto;display:flex;flex-direction:column;animation:fadeUp .3s ease}@keyframes fadeUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.topnav{position:fixed;top:0;left:0;right:0;z-index:100;height:var(--nav-height);background:hsla(0,0%,100%,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);display:flex;align-items:center;justify-content:space-between;padding:0 20px}.topnav-brand{font-weight:800;font-size:18px;color:var(--primary);letter-spacing:-.3px;cursor:pointer}.topnav-brand span{color:var(--accent)}.topnav-links{display:flex;gap:4px}.topnav-link{background:none;border:none;font-family:inherit;font-size:13px;font-weight:600;color:var(--text-secondary);padding:8px 12px;border-radius:8px;cursor:pointer;transition:all .2s}.topnav-link.active{background:rgba(108,92,231,.08)}.topnav-link.active,.topnav-link:hover{color:var(--primary)}.home-hero{text-align:center;padding:32px 0 24px}.home-hero h1{font-family:Playfair 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p{font-size:13px;color:var(--text-secondary);line-height:1.4}.mode-arrow{position:absolute;right:20px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:18px}.stats-bar{display:flex;gap:12px;margin-top:28px;padding:16px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--border)}.stat-item{flex:1 1;text-align:center}.stat-num{font-size:22px;font-weight:800;color:var(--primary)}.stat-label{font-size:11px;color:var(--text-muted);font-weight:600;text-transform:uppercase;letter-spacing:.5px;margin-top:2px}.config-header{gap:12px;margin-bottom:28px}.back-btn,.config-header{display:flex;align-items:center}.back-btn{width:40px;height:40px;border-radius:12px;background:var(--surface);border:1px solid var(--border);justify-content:center;cursor:pointer;font-size:18px;color:var(--text);transition:all .2s}.back-btn:active{transform:scale(.92)}.config-header h2{font-size:22px;font-weight:700}.config-group{margin-bottom:24px}.config-label{font-size:13px;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:10px}.config-options{display:flex;gap:8px;flex-wrap:wrap}.config-opt{flex:1 1;min-width:70px;padding:12px 8px;text-align:center;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-sm);cursor:pointer;font-family:inherit;font-size:14px;font-weight:600;color:var(--text);transition:all .2s}.config-opt.selected{border-color:var(--primary);background:rgba(108,92,231,.06);color:var(--primary)}.config-opt:active{transform:scale(.95)}.config-opt small{display:block;font-size:11px;font-weight:500;color:var(--text-muted);margin-top:2px}.start-btn{width:100%;padding:16px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;border:none;border-radius:var(--radius-sm);font-family:inherit;font-size:16px;font-weight:700;cursor:pointer;margin-top:12px;transition:all .2s;box-shadow:0 4px 16px rgba(108,92,231,.3)}.start-btn:active{transform:scale(.97)}.start-btn.secondary{background:var(--surface);color:var(--primary);border:2px solid var(--primary);box-shadow:none}.start-btn.green{background:linear-gradient(135deg,#00b894,#00a381);box-shadow:0 4px 16px rgba(0,184,148,.3)}.mt-auto{margin-top:auto}.quiz-topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.quiz-progress-text{font-size:14px;font-weight:600;color:var(--text-secondary)}.quiz-timer{font-size:14px;font-weight:700;color:var(--primary);background:rgba(108,92,231,.08);padding:6px 14px;border-radius:20px}.quiz-timer.warning{color:var(--accent);background:hsla(0,100%,71%,.1)}.quiz-progress-bar{width:100%;height:6px;background:var(--border);border-radius:3px;margin-bottom:28px;overflow:hidden}.quiz-progress-fill{height:100%;background:linear-gradient(90deg,var(--primary),var(--primary-light));border-radius:3px;transition:width .4s ease}.quiz-question{font-size:18px;font-weight:600;line-height:1.5;margin-bottom:24px}.quiz-options{display:flex;flex-direction:column;gap:10px}.quiz-option{width:100%;text-align:left;padding:16px 20px;background:var(--surface);border:2px solid var(--border);border-radius:var(--radius-sm);font-family:inherit;font-size:15px;font-weight:500;color:var(--text);cursor:pointer;transition:all .2s;display:flex;align-items:center;gap:14px}.quiz-option:active{transform:scale(.98)}.quiz-option .opt-letter{width:32px;height:32px;border-radius:8px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:13px;color:var(--text-secondary);flex-shrink:0}.quiz-option.correct{border-color:var(--success);background:rgba(0,184,148,.06)}.quiz-option.correct .opt-letter{background:var(--success);color:#fff}.quiz-option.wrong{border-color:var(--error);background:hsla(0,100%,71%,.06)}.quiz-option.wrong .opt-letter{background:var(--error);color:#fff}.quiz-option.disabled{pointer-events:none;opacity:.5}.quiz-explanation{padding:16px 20px;background:rgba(108,92,231,.05);border-left:3px solid var(--primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:14px;line-height:1.6;color:var(--text-secondary)}.quiz-explanation,.quiz-next-btn{margin-top:16px;animation:fadeUp .3s ease}.quiz-next-btn{width:100%;padding:14px;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-sm);font-family:inherit;font-size:15px;font-weight:600;cursor:pointer;transition:all .2s}.quiz-next-btn:active{transform:scale(.97)}.results-center{text-align:center;padding:20px 0}.score-ring{width:160px;height:160px;margin:0 auto 24px;position:relative}.score-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.score-ring circle{fill:none;stroke-width:8;stroke-linecap:round}.score-ring .bg{stroke:var(--border)}.score-ring .fill{stroke:var(--primary);stroke-dasharray:440;stroke-dashoffset:440;transition:stroke-dashoffset 1.2s ease}.score-ring .score-text{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.score-ring .score-pct{font-size:38px;font-weight:800;color:var(--text)}.score-ring .score-label{font-size:12px;color:var(--text-muted);font-weight:600}.results-msg{font-size:22px;font-weight:700;margin-bottom:4px}.results-sub{font-size:14px;color:var(--text-secondary);margin-bottom:28px}.results-stats{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:12px;gap:12px;margin-bottom:28px}.results-stat{background:var(--surface);border-radius:var(--radius-sm);padding:16px 8px;border:1px solid var(--border);text-align:center}.results-stat .rs-num{font-size:20px;font-weight:800}.results-stat .rs-label{font-size:11px;color:var(--text-muted);margin-top:2px}.rs-correct .rs-num{color:var(--success)}.rs-wrong .rs-num{color:var(--error)}.rs-time .rs-num{color:var(--primary)}.results-actions{display:flex;flex-direction:column;gap:10px}.reading-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.reading-badge{font-size:12px;font-weight:600;padding:4px 12px;border-radius:20px;background:rgba(0,184,148,.1);color:var(--success)}.reading-card{background:var(--surface);border-radius:var(--radius);padding:24px;border:1px solid var(--border);box-shadow:var(--shadow)}.reading-title{font-family:Playfair Display,serif;font-size:22px;margin-bottom:16px;line-height:1.3}.reading-body{font-size:16px;line-height:1.8;color:var(--text);letter-spacing:.01em;white-space:pre-line}.highlight-word{background:rgba(108,92,231,.12);padding:1px 4px;border-radius:4px;font-weight:600;color:var(--primary-dark);cursor:pointer}.audio-controls{display:flex;align-items:center;gap:12px;margin-top:20px;padding:14px 20px;background:var(--bg);border-radius:var(--radius-sm)}.audio-play-btn{width:44px;height:44px;border-radius:50%;background:var(--primary);border:none;color:#fff;font-size:18px;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:all .2s}.audio-play-btn:active{transform:scale(.9)}.audio-info{flex:1 1}.audio-info .ai-title{font-size:13px;font-weight:600}.audio-info .ai-sub{font-size:11px;color:var(--text-muted)}.speed-btn{padding:6px 12px;background:var(--surface);border:1px solid var(--border);border-radius:6px;font-family:inherit;font-size:12px;font-weight:700;color:var(--primary);cursor:pointer}.reading-questions{margin-top:24px}.reading-questions h4{font-size:14px;font-weight:700;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:14px}.rq-item{margin-bottom:16px}.rq-item .rq-text{font-size:15px;font-weight:600;margin-bottom:8px}.blog-header{margin-bottom:24px}.blog-header h2{font-family:Playfair Display,serif;font-size:28px;margin-bottom:4px}.blog-header p{font-size:14px;color:var(--text-secondary)}.blog-cards{display:flex;flex-direction:column;gap:16px}.blog-card{background:var(--surface);border-radius:var(--radius);overflow:hidden;border:1px solid var(--border);cursor:pointer;transition:all .2s}.blog-card:active{transform:scale(.98)}.blog-card:hover{box-shadow:var(--shadow)}.blog-thumb{width:100%;height:140px;background:linear-gradient(135deg,var(--primary-light),var(--primary));display:flex;align-items:center;justify-content:center;font-size:36px}.blog-card-body{padding:16px 20px}.blog-tag{font-size:11px;text-transform:uppercase;color:var(--primary);letter-spacing:.5px}.blog-card-body h3,.blog-tag{font-weight:700;margin-bottom:6px}.blog-card-body h3{font-size:16px;line-height:1.3}.blog-card-body p{font-size:13px;color:var(--text-secondary);line-height:1.4}.blog-meta{display:flex;justify-content:space-between;margin-top:10px;font-size:12px;color:var(--text-muted)}.article-content{background:var(--surface);border-radius:var(--radius);padding:24px;border:1px solid var(--border)}.article-content h1{font-family:Playfair Display,serif;font-size:26px;line-height:1.3;margin-bottom:12px}.article-content .article-meta{font-size:13px;color:var(--text-muted);margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid var(--border)}.article-content p{font-size:16px;line-height:1.8;margin-bottom:16px;color:var(--text)}.article-content h2{font-size:20px;font-weight:700;margin:24px 0 12px}@media (min-width:600px){.mode-cards{flex-direction:row}.mode-card{flex:1 1;flex-direction:column;text-align:center;padding:32px 20px}.mode-arrow{display:none}}