*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--yellow: #F5C200;--yellow-hover: #e0b000;--bg: #f6f5f1;--bg-card: #ffffff;--text: #2a2824;--text2: #7a7670;--border: rgba(0,0,0,.08);--border2: rgba(0,0,0,.14);--radius: 10px;--radius-lg: 10px;--radius-xl: 10px;--correct-bg: #e8f5d8;--correct: #3a6e12;--correct-border: #5a9e22;--wrong-bg: #fce8e0;--wrong: #9e3a1a;--wrong-border: #d0602a}@media (prefers-color-scheme: dark){:root{--bg: #1e1d1a;--bg-card: #272521;--text: #f0ede4;--text2: #8a8780;--border: rgba(255,255,255,.08);--border2: rgba(255,255,255,.15);--correct-bg: #1a2e0a;--correct: #7dc43a;--correct-border: #4a8a18;--wrong-bg: #2e1208;--wrong: #e07858;--wrong-border: #a34028}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;background:var(--bg);color:var(--text);min-height:100vh;line-height:1.6}.app{max-width:680px;margin:0 auto;padding:0 1rem 4rem}.header-wrapper{display:flex;justify-content:center;padding:1.25rem 1rem 2rem}.header-card{background:#2a2824;border-radius:10px;padding:.85rem 1.25rem;display:flex;align-items:center;gap:.75rem;width:80vw;max-width:1100px}.logo{font-size:17px;font-weight:700;color:#fff;white-space:nowrap;flex-shrink:0}.logo-dot{color:var(--yellow)}.nav-links{display:flex;gap:2px;flex:1;padding:0 .75rem}.nav-link{flex:1;text-align:center;font-size:13px;font-weight:500;padding:8px 10px;border-radius:8px;border:none;background:transparent;color:#ffffffb8;cursor:pointer;transition:all .15s;white-space:nowrap}.nav-link:hover{color:#fff;background:#ffffff1a}.nav-link.active{background:var(--yellow);color:#2a2824;font-weight:700}.lang-dropdown{position:relative;flex-shrink:0}.lang-trigger{display:flex;align-items:center;gap:5px;font-size:12px;font-weight:600;padding:6px 10px;border-radius:8px;border:1px solid rgba(255,255,255,.15);background:#ffffff12;color:#fffc;cursor:pointer;transition:all .15s;white-space:nowrap}.lang-trigger:hover{background:#ffffff1f}.lang-code{letter-spacing:.04em}.lang-chevron{font-size:9px;opacity:.6}.lang-menu{position:absolute;right:0;top:calc(100% + 8px);background:#2a2824;border:1px solid rgba(255,255,255,.12);border-radius:var(--radius);padding:4px;min-width:150px;z-index:100;box-shadow:0 8px 24px #0000004d}.lang-option{display:flex;align-items:center;gap:8px;width:100%;padding:8px 10px;font-size:13px;font-weight:500;border:none;background:transparent;color:#fff9;cursor:pointer;border-radius:6px;transition:all .12s;text-align:left}.lang-option:hover{background:#ffffff14;color:#fff}.lang-option.selected{color:var(--yellow)}.lang-option-flag{font-size:16px}.lang-option-label{flex:1}.lang-check{font-size:12px;color:var(--yellow)}.search-hero{margin-bottom:1.5rem;transition:margin .2s}.search-hero--compact{margin-bottom:1rem}.hero-title{font-size:32px;font-weight:700;letter-spacing:-.8px;color:var(--text);line-height:1.2;margin-bottom:6px}.hero-sub{font-size:15px;color:var(--text2)}.search-wrap{position:relative;margin-bottom:1rem}.search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);font-size:17px;color:var(--text2);pointer-events:none}.search-input{width:100%;padding:13px 42px;font-size:16px;border:1.5px solid var(--border2);border-radius:var(--radius-lg);background:var(--bg-card);color:var(--text);outline:none;transition:border-color .15s,box-shadow .15s}.search-input:focus{border-color:var(--yellow);box-shadow:0 0 0 3px #f5c20024}.search-input::placeholder{color:var(--text2)}.clear-btn{position:absolute;right:14px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text2);cursor:pointer;font-size:15px;line-height:1}.no-result{text-align:center;color:var(--text2);font-size:14px;padding:2.5rem 1rem}.result-card{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem;margin-bottom:1rem}.article-badge{display:inline-block;font-size:12px;font-weight:700;letter-spacing:.05em;padding:3px 10px;border-radius:20px;margin-bottom:10px}.badge-der{background:#ddeaf8;color:#1a5a9e}.badge-die{background:#fce4dc;color:#9e3a1a}.badge-das{background:#e2f2d4;color:#3a6e12}.word-main{font-size:34px;font-weight:700;letter-spacing:-.8px;color:var(--text);margin-bottom:4px;line-height:1.1}.word-sub{font-size:14px;color:var(--text2);margin-bottom:1rem}.decl-divider{height:1px;background:var(--border);margin-bottom:1rem}.decl-label{font-size:10px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text2);margin-bottom:8px}.decl-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}.decl-cell{background:var(--bg);border-radius:8px;padding:8px 10px}.decl-case{font-size:10px;font-weight:600;letter-spacing:.05em;text-transform:uppercase;color:var(--text2);margin-bottom:2px}.decl-form{font-size:14px;font-weight:600;color:var(--text);margin-bottom:4px}.decl-example{font-size:12px;color:var(--text2);line-height:1.4;font-style:italic;border-top:1px solid var(--border);padding-top:4px;margin-top:2px}.quiz-meta{display:flex;align-items:center;gap:10px;margin-bottom:1.25rem}.progress-bar{flex:1;height:5px;background:var(--border2);border-radius:3px;overflow:hidden}.progress-fill{height:100%;background:var(--yellow);border-radius:3px;transition:width .35s ease}.quiz-count{font-size:13px;font-weight:600;color:var(--text2);min-width:42px;text-align:right}.quiz-card{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:2.5rem 1.5rem;text-align:center;margin-bottom:1.1rem}.quiz-word{font-size:44px;font-weight:700;letter-spacing:-1.5px;color:var(--text);margin-bottom:8px;line-height:1}.quiz-trans{font-size:14px;color:var(--text2)}.article-btns{display:flex;gap:10px;margin-bottom:1rem}.art-btn{flex:1;padding:15px;font-size:20px;font-weight:700;border:1.5px solid var(--border2);border-radius:var(--radius);background:var(--bg-card);color:var(--text);cursor:pointer;transition:all .15s}.art-btn:hover:not(:disabled){border-color:var(--yellow);background:#f5c2000f}.art-btn:disabled{opacity:.4;cursor:default}.art-btn.correct{background:var(--correct-bg);border-color:var(--correct-border);color:var(--correct);opacity:1!important}.art-btn.wrong{background:var(--wrong-bg);border-color:var(--wrong-border);color:var(--wrong);opacity:1!important}.art-btn.dimmed{opacity:.3}.feedback{font-size:14px;font-weight:600;text-align:center;padding:10px 14px;border-radius:var(--radius);margin-bottom:1rem}.feedback-ok{background:var(--correct-bg);color:var(--correct)}.feedback-err{background:var(--wrong-bg);color:var(--wrong)}.explanation-card{background:var(--bg-card);border:1.5px solid var(--border);border-left:3px solid var(--yellow);border-radius:var(--radius);padding:12px 14px;margin-bottom:1rem;font-size:13px;line-height:1.55}.explanation-rule{color:var(--text);margin-bottom:4px}.explanation-exceptions{color:var(--text2)}.explanation-label{font-weight:700;color:var(--text)}.next-btn{width:100%;padding:14px;font-size:15px;font-weight:700;border:none;border-radius:var(--radius);background:var(--yellow);color:#2a2824;cursor:pointer;transition:background .15s}.next-btn:hover{background:var(--yellow-hover)}.quiz-done{text-align:center;padding:3rem 1rem 2rem}.quiz-done-icon{font-size:52px;margin-bottom:1rem}.quiz-done-title{font-size:26px;font-weight:700;letter-spacing:-.5px;margin-bottom:8px}.quiz-done-sub{font-size:16px;color:var(--text2);margin-bottom:2rem}.category-section{margin-top:2rem}.category-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--text2);margin-bottom:12px}.category-scroll{display:flex;gap:10px;overflow-x:auto;overflow-y:hidden;padding-bottom:8px;-webkit-overflow-scrolling:touch;scrollbar-width:thin;scrollbar-color:var(--border2) transparent}.category-scroll::-webkit-scrollbar{height:6px}.category-scroll::-webkit-scrollbar-track{background:transparent}.category-scroll::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.category-card{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius);padding:20px 10px;aspect-ratio:1;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:all .15s;text-align:center}.category-card:hover{border-color:var(--border2);background:var(--bg)}.category-card.active{border-color:var(--yellow);background:#f5c2000f}.category-emoji{font-size:28px;margin-bottom:6px}.category-name{font-size:13px;font-weight:600;color:var(--text);margin-bottom:2px}.category-count{font-size:11px;color:var(--text2)}.register-cta{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem;text-align:center;margin-bottom:1rem}.cta-icon{font-size:40px;margin-bottom:12px}.cta-title{font-size:20px;font-weight:700;letter-spacing:-.3px;margin-bottom:8px}.cta-sub{font-size:14px;color:var(--text2);line-height:1.65;margin-bottom:1.25rem;max-width:340px;margin-left:auto;margin-right:auto}.cta-btn{display:inline-block;padding:12px 32px;background:var(--yellow);color:#2a2824;font-size:15px;font-weight:700;border-radius:var(--radius);border:none;cursor:pointer;transition:background .15s;margin-bottom:12px}.cta-btn:hover{background:var(--yellow-hover)}.cta-login{display:block;font-size:13px;color:var(--text2);cursor:pointer}.cta-login span{color:#b89000;font-weight:600}.stats-preview{display:grid;grid-template-columns:1fr 1fr;gap:10px;opacity:.3;filter:blur(4px);pointer-events:none;-webkit-user-select:none;user-select:none}.stat-card{background:var(--bg-card);border:1.5px solid var(--border);border-radius:var(--radius);padding:1rem}.stat-label{font-size:12px;color:var(--text2);margin-bottom:4px}.stat-value{font-size:28px;font-weight:700;letter-spacing:-.5px;color:var(--text)}@media (max-width: 520px){.header-wrapper{padding:.75rem .75rem 1.5rem}.header-card{width:100%;max-width:100%;flex-wrap:wrap;gap:8px;padding:.75rem 1rem}.logo{font-size:16px;flex:1}.nav-links{order:3;width:100%;padding:0;gap:4px}.nav-link{font-size:12px;padding:8px 4px}.lang-dropdown{order:2}.hero-title{font-size:22px}.hero-sub{font-size:13px}.quiz-word{font-size:32px}.word-main{font-size:24px}.decl-grid{grid-template-columns:1fr}.article-btns{gap:8px}.art-btn{font-size:18px;padding:13px}.category-grid{gap:8px}.category-card{padding:14px 8px}}.quiz-category-header{display:flex;align-items:center;gap:10px;margin-bottom:10px}.quiz-exit-btn{background:var(--bg-card);border:1.5px solid var(--border2);border-radius:var(--radius);color:var(--text2);font-size:16px;width:36px;height:36px;cursor:pointer;transition:all .15s}.quiz-exit-btn:hover{color:var(--text);border-color:var(--text2)}.quiz-category-info{display:flex;flex-direction:column}.quiz-category-name{font-size:14px;font-weight:700;color:var(--text)}.quiz-category-total{font-size:11px;color:var(--text2)}.progress-segments{display:flex;flex:1;gap:3px;align-items:center}.progress-seg{flex:1;height:6px;border-radius:3px;background:var(--border2);transition:background .2s;min-width:0}.seg-correct{background:var(--yellow)}.seg-wrong{background:var(--wrong-border)}.seg-current{background:var(--border2);outline:2px solid var(--yellow);outline-offset:1px}.quiz-done-segments{display:flex;gap:3px;justify-content:center;margin:1rem auto 1.5rem;max-width:360px;flex-wrap:wrap}.quiz-done-segments .progress-seg{flex:none;width:18px;height:8px;border-radius:4px}.quiz-done-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-bottom:12px}.quiz-done-actions .next-btn{flex:1;min-width:140px;max-width:220px}.repeat-btn{flex:1;min-width:140px;max-width:220px;padding:14px;font-size:14px;font-weight:700;border:1.5px solid var(--wrong-border);border-radius:var(--radius);background:var(--wrong-bg);color:var(--wrong);cursor:pointer;transition:opacity .15s}.repeat-btn:hover{opacity:.85}.quiz-back-link{background:none;border:none;color:var(--text2);font-size:13px;cursor:pointer;padding:4px}.quiz-back-link:hover{color:var(--text)}@media (max-width: 520px){.progress-seg{height:5px}.quiz-done-segments .progress-seg{width:14px;height:6px}}.quiz-category-header--all{display:flex;align-items:center;gap:8px;margin-bottom:10px}.quiz-mode-selector{display:flex;gap:6px;margin-bottom:1.25rem}.quiz-mode-btn{flex:1;padding:8px 10px;font-size:13px;font-weight:600;border:1.5px solid var(--border2);border-radius:var(--radius);background:var(--bg-card);color:var(--text2);cursor:pointer;transition:all .15s}.quiz-mode-btn:hover{color:var(--text);border-color:var(--text2)}.quiz-mode-btn.active{background:var(--yellow);border-color:var(--yellow);color:#2a2824}.quiz-case-badge{display:inline-block;margin-top:10px;padding:3px 12px;font-size:11px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;background:var(--bg);border:1.5px solid var(--border2);border-radius:20px;color:var(--text2)}.decl-btns{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:1rem}.decl-btn{padding:14px 10px;font-size:15px;font-weight:600;border:1.5px solid var(--border2);border-radius:var(--radius);background:var(--bg-card);color:var(--text);cursor:pointer;transition:all .15s;text-align:center}.decl-btn:hover:not(:disabled){border-color:var(--yellow);background:#f5c2000f}.decl-btn:disabled{cursor:default}.decl-btn.correct{background:var(--correct-bg);border-color:var(--correct-border);color:var(--correct);opacity:1!important}.decl-btn.wrong{background:var(--wrong-bg);border-color:var(--wrong-border);color:var(--wrong);opacity:1!important}.decl-btn.dimmed{opacity:.3}@media (max-width: 520px){.decl-btn{font-size:13px;padding:12px 8px}.quiz-mode-btn{font-size:12px;padding:7px 6px}}.quiz-card--decl{padding:1.75rem 1.5rem}.quiz-word--sm{font-size:22px;font-weight:700;color:var(--text2);margin-bottom:14px;letter-spacing:-.3px}.quiz-sentence{font-size:22px;font-weight:600;color:var(--text);line-height:1.5;letter-spacing:-.3px}@media (max-width: 520px){.quiz-word--sm,.quiz-sentence{font-size:18px}}