:root{--bg:#ffffff;--bg-soft:#fef7ed;--bg-elevated:#fffbf5;--text:#1c1917;--text-secondary:#57534e;--muted:#78716c;--muted-light:#a8a29e;--edge:#e7e5e4;--edge-strong:#d6d3d1;--accent-primary:#d97706;--accent-primary-hover:#b45309;--accent-primary-light:#fed7aa;--accent-secondary:#dc2626;--accent-secondary-hover:#b91c1c;--accent-secondary-light:#fecaca;--accent-success:#059669;--btn-text:#ffffff;--chip-text:#78350f;--ring:rgba(217, 119, 6, 0.3);--focus-ring-strong:rgba(217, 119, 6, 0.5);--shadow-sm:0 1px 3px rgba(28, 25, 23, 0.08);--shadow-md:0 4px 12px rgba(28, 25, 23, 0.1);--shadow-lg:0 10px 30px rgba(28, 25, 23, 0.12);--shadow-xl:0 20px 50px rgba(28, 25, 23, 0.15);--radius-lg:16px;--radius-md:12px;--radius-sm:8px;--radius-full:999px;--interactive-bg:#fff7ed;--interactive-hover:#ffedd5;--interactive-border:#fb923c;--interactive-text:#78350f}@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}@media (prefers-color-scheme:dark){:root{--bg:#0c0a09;--bg-soft:#1c1917;--bg-elevated:#292524;--text:#fafaf9;--text-secondary:#d6d3d1;--muted:#a8a29e;--muted-light:#78716c;--edge:#292524;--edge-strong:#44403c;--accent-primary:#fb923c;--accent-primary-hover:#fdba74;--accent-primary-light:#431407;--accent-secondary:#f87171;--accent-secondary-hover:#fca5a5;--accent-secondary-light:#450a0a;--accent-success:#34d399;--btn-text:#1c1917;--chip-text:#fed7aa;--ring:rgba(251, 146, 60, 0.4);--focus-ring-strong:rgba(251, 146, 60, 0.6);--shadow-sm:0 1px 3px rgba(0, 0, 0, 0.3);--shadow-md:0 4px 12px rgba(0, 0, 0, 0.4);--shadow-lg:0 10px 30px rgba(0, 0, 0, 0.5);--shadow-xl:0 20px 50px rgba(0, 0, 0, 0.6);--interactive-bg:#292524;--interactive-hover:#44403c;--interactive-border:#fb923c;--interactive-text:#fed7aa}}.aitd-dictionary-container{font-family:'Poppins',-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;max-width:760px;margin:2.5rem auto;border-radius:var(--radius-lg);overflow:hidden;background:var(--bg);border:1px solid var(--edge);box-shadow:var(--shadow-xl);position:relative}.aitd-dictionary-container::before{content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:linear-gradient(135deg,var(--accent-primary),var(--accent-secondary));-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;opacity:.6}@media (prefers-color-scheme:dark){.aitd-dictionary-container{box-shadow:var(--shadow-xl),0 0 0 1px rgb(251 146 60 / .1)}}.aitd-title-bar{display:flex;align-items:center;gap:12px;padding:18px 24px;color:#fff;background:linear-gradient(135deg,var(--accent-primary) 0%,var(--accent-secondary) 100%);border-bottom:1px solid rgb(255 255 255 / .15)}.aitd-title-bar h2{margin:0;font-size:1.4rem;font-weight:700;letter-spacing:.3px;text-shadow:0 2px 8px rgb(0 0 0 / .2)}.aitd-title-icon{width:32px;height:32px;flex-shrink:0;filter:drop-shadow(0 2px 4px rgb(0 0 0 / .2))}.aitd-title-icon svg{width:100%;height:100%;fill:#fff}.aitd-search-form{display:flex;gap:12px;padding:20px;background:var(--bg-soft)}.aitd-search-input-wrapper{position:relative;flex-grow:1}.aitd-search-icon{position:absolute;top:50%;left:18px;transform:translateY(-50%);color:var(--muted);pointer-events:none;z-index:1}#aitd-search-input{width:100%;padding:14px 50px;font-size:1.05rem;box-sizing:border-box;border:2px solid var(--edge-strong);border-radius:var(--radius-full);background:var(--bg);color:var(--text);transition:border-color 0.2s,box-shadow 0.2s,transform 0.15s;font-family:'Poppins',sans-serif}#aitd-search-input::placeholder{color:var(--muted-light)}#aitd-search-input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 4px var(--ring);outline:none;transform:scale(1.005)}.aitd-clear-icon{position:absolute;top:50%;right:16px;transform:translateY(-50%);color:var(--muted);cursor:pointer;font-size:1.3rem;line-height:1;display:none;z-index:2;transition:color 0.2s,transform 0.15s}.aitd-clear-icon:hover{color:var(--text-secondary);transform:translateY(-50%) scale(1.1)}.aitd-search-form button{padding:14px 28px;border:none;border-radius:var(--radius-full);cursor:pointer;color:var(--btn-text);background:var(--accent-primary);font-size:1.05rem;font-weight:600;transition:transform 0.15s ease,box-shadow 0.2s ease,background-color 0.2s;box-shadow:0 4px 12px rgb(217 119 6 / .3)}.aitd-search-form button:hover{background:var(--accent-primary-hover);transform:translateY(-1px);box-shadow:0 6px 20px rgb(217 119 6 / .4)}.aitd-search-form button:active{transform:translateY(0)}.aitd-search-form button:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus-ring-strong),0 6px 20px rgb(217 119 6 / .4)}.aitd-controls-bar{padding:0 20px 20px 20px;background:var(--bg-soft);border-bottom:1px solid var(--edge);display:flex;justify-content:center}.aitd-mode-toggle{display:inline-flex;background-color:var(--bg);border-radius:var(--radius-sm);padding:4px;border:1px solid var(--edge-strong);box-shadow:var(--shadow-sm)}.aitd-mode-toggle input[type="radio"]{display:none}.aitd-mode-toggle .aitd-mode-label{padding:10px 20px;border-radius:6px;cursor:pointer;font-weight:600;font-size:.9rem;color:var(--muted);transition:all 0.2s ease;white-space:nowrap}.aitd-mode-toggle .aitd-mode-label:hover{background-color:var(--bg-elevated);color:var(--text-secondary)}.aitd-mode-toggle input[type="radio"]:checked+.aitd-mode-label{background-color:var(--accent-primary);color:var(--btn-text);box-shadow:var(--shadow-sm)}.aitd-mode-toggle input[type="radio"]:focus-visible+.aitd-mode-label{outline:2px solid var(--accent-primary);outline-offset:2px}@media (prefers-color-scheme:dark){.aitd-mode-toggle input[type="radio"]:checked+.aitd-mode-label{background-color:var(--accent-primary);color:var(--btn-text)}}.aitd-suggestions-list{position:absolute;top:calc(100% + 8px);left:0;right:0;z-index:1000;background:var(--bg);border:1px solid var(--edge);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);list-style:none;margin:0;padding:6px;overflow:hidden;animation:aitd-fadeIn 0.2s ease-out}@keyframes aitd-fadeIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}.aitd-suggestion-item{padding:12px 16px;cursor:pointer;border-radius:var(--radius-sm);display:flex;align-items:baseline;gap:8px;transition:background-color 0.15s,transform 0.1s;color:var(--text)}.aitd-suggestion-item:hover{background:var(--interactive-bg);transform:translateX(4px)}.aitd-suggestion-item:active{background:var(--interactive-hover);transform:translateX(2px)}.aitd-suggestion-en{color:var(--muted);font-size:.95rem}.aitd-results-area{padding:16px;min-height:240px;background:var(--bg)}.aitd-loading{text-align:center;padding:60px 20px;color:var(--muted);font-size:1.1rem}.aitd-loading::after{content:'';display:block;width:24px;height:24px;margin:20px auto 0;border:3px solid var(--edge);border-top-color:var(--accent-primary);border-radius:50%;animation:aitd-spin 0.8s linear infinite}@keyframes aitd-spin{to{transform:rotate(360deg)}}.aitd-error{color:var(--accent-secondary);text-align:center;padding:40px 24px;font-size:1.05rem;background:var(--accent-secondary-light);border-radius:var(--radius-sm);border:1px dashed var(--accent-secondary);margin:20px 0}.aitd-empty-state{text-align:center;padding:50px 20px;color:var(--muted)}.aitd-empty-state-icon{font-size:3rem;margin-bottom:16px;opacity:.5}.aitd-empty-state-text{font-size:1.15rem;margin-bottom:8px;color:var(--text-secondary)}.aitd-empty-state-hint{font-size:.95rem;color:var(--muted)}.aitd-card{background:var(--bg);border:1px solid var(--edge);border-radius:var(--radius-md);padding:24px;margin:12px 0;box-shadow:var(--shadow-sm);transition:transform 0.2s ease,box-shadow 0.2s ease;animation:aitd-fadeInUp 0.4s ease-out}@keyframes aitd-fadeInUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.aitd-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.aitd-card-header{margin:-24px -24px 20px -24px;padding:12px 24px;border-bottom:1px solid var(--edge);background:linear-gradient(90deg,var(--accent-primary-light),transparent);font-size:.85rem;text-transform:uppercase;color:var(--text-secondary);letter-spacing:1.2px;font-weight:600;border-radius:var(--radius-md) var(--radius-md) 0 0}@media (prefers-color-scheme:dark){.aitd-card{background:var(--bg-soft);border-color:var(--edge)}.aitd-card-header{background:linear-gradient(90deg,var(--accent-primary-light),transparent);color:var(--text-secondary);border-bottom-color:var(--edge)}}.aitd-vocab-image{width:100%;height:auto;border-radius:var(--radius-sm);margin-bottom:0;border:1px solid var(--edge)}.aitd-main-word h2{font-size:2.4rem;margin:0 0 12px 0;font-weight:800;letter-spacing:.3px;color:var(--accent-primary)}.aitd-vocab-audio{width:100%;height:40px;margin-top:12px;border-radius:var(--radius-sm);outline:none}.aitd-vocab-audio:focus-visible{box-shadow:0 0 0 3px var(--ring)}.aitd-meaning-list{list-style:decimal;padding-left:28px;margin:0}.aitd-meaning-list li{margin-bottom:20px;padding-bottom:20px;border-bottom:1px dashed var(--edge)}.aitd-meaning-list li:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.aitd-meaning{font-size:1.2rem;color:var(--text);margin:0 0 6px 0;font-weight:600;line-height:1.5}.aitd-pos{font-size:.95rem;color:var(--muted)}.aitd-example{margin-top:12px;padding:12px;background:var(--bg-elevated);border-radius:var(--radius-sm);border-left:3px solid var(--accent-primary)}.aitd-example-header{display:flex;justify-content:space-between;align-items:center;gap:12px}.aitd-example-ta{display:block;font-size:1.1rem;color:var(--text);line-height:1.6}.aitd-example-en{display:block;font-style:italic;color:var(--muted);margin-top:6px;font-size:.95rem}.aitd-extra-field{margin-top:16px;padding-top:16px;border-top:1px dashed var(--edge);font-size:.98rem;color:var(--text-secondary);line-height:1.6}.aitd-extra-field:first-child{border-top:none;margin-top:0;padding-top:0}.aitd-extra-field strong{color:var(--text)}.aitd-tts-button{background:var(--interactive-bg);color:var(--interactive-text);border:1px solid var(--interactive-border);cursor:pointer;padding:6px;border-radius:50%;width:36px;height:36px;line-height:1;font-size:1.1rem;display:inline-flex;align-items:center;justify-content:center;transition:transform 0.15s ease,box-shadow 0.2s ease,background 0.2s ease;box-shadow:var(--shadow-sm);flex-shrink:0}.aitd-tts-button:hover{background:var(--interactive-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.aitd-tts-button:active{transform:translateY(0)}.aitd-tts-button:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus-ring-strong),var(--shadow-md)}.aitd-clickable-word{color:var(--interactive-text);background:var(--interactive-bg);padding:6px 12px;border-radius:var(--radius-full);margin:0 6px 8px 0;display:inline-block;cursor:pointer;border:1px solid var(--interactive-border);font-size:.9rem;font-weight:600;transition:transform 0.15s ease,box-shadow 0.2s ease,background 0.15s;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}.aitd-clickable-word::before{content:'';position:absolute;inset:0;background:radial-gradient(circle,var(--accent-primary) 0%,transparent 70%);opacity:0;transition:opacity 0.3s}.aitd-clickable-word:hover{background:var(--interactive-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.aitd-clickable-word:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.aitd-clickable-word:active::before{opacity:.2}.aitd-clickable-word:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus-ring-strong),var(--shadow-md)}.aitd-wotd-container{padding:32px 28px;text-align:center;border-radius:var(--radius-md);background:linear-gradient(135deg,rgb(217 119 6 / .08) 0%,rgb(220 38 38 / .06) 50%,rgb(217 119 6 / .08) 100%);border:2px dashed var(--accent-primary);margin:12px 0;animation:aitd-fadeInUp 0.5s ease-out}.aitd-wotd-header{margin:0 0 16px 0;font-size:.9rem;color:var(--muted);text-transform:uppercase;letter-spacing:1.5px;font-weight:600}.aitd-wotd-word{font-size:2.8rem;font-weight:800;margin-bottom:12px;color:var(--accent-primary);line-height:1.2}.aitd-wotd-meaning{font-size:1.25rem;color:var(--text-secondary);margin-bottom:20px;line-height:1.5}.aitd-wotd-link{color:var(--accent-primary);font-weight:700;text-decoration:none;display:inline-block;padding:8px 16px;border-radius:var(--radius-sm);transition:background-color 0.2s,transform 0.15s}.aitd-wotd-link:hover{background-color:var(--interactive-bg);text-decoration:none;transform:translateY(-1px)}.aitd-wotd-link:focus-visible{outline:none;box-shadow:0 0 0 3px var(--focus-ring-strong)}@media (max-width:640px){.aitd-dictionary-container{margin:1rem;border-radius:var(--radius-md)}.aitd-title-bar{padding:14px 18px;gap:10px}.aitd-title-bar h2{font-size:1.15rem}.aitd-title-icon{width:28px;height:28px}.aitd-search-form{padding:16px;gap:10px;flex-direction:column}#aitd-search-input{padding:12px 44px;font-size:1rem}.aitd-search-form button{width:100%;padding:12px 24px}.aitd-controls-bar{padding:0 16px 16px 16px}.aitd-mode-toggle .aitd-mode-label{padding:8px 14px;font-size:.85rem}.aitd-results-area{padding:12px}.aitd-card{margin:10px 0;padding:18px}.aitd-card-header{margin:-18px -18px 16px -18px;padding:10px 18px}.aitd-main-word h2{font-size:2rem}.aitd-meaning{font-size:1.1rem}.aitd-example-ta{font-size:1.05rem}.aitd-wotd-container{padding:24px 20px}.aitd-wotd-word{font-size:2.2rem}.aitd-wotd-meaning{font-size:1.1rem}.aitd-card:hover{transform:none;box-shadow:var(--shadow-sm)}}