@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap";:root{--elevation-1: 4px 4px 0 rgba(31, 42, 58, .1);--elevation-2: 6px 6px 0 rgba(31, 42, 58, .12);--elevation-4: 0 22px 55px rgba(31, 42, 58, .15);--bg-dark: #f7fbff;--bg-card: #ffffff;--primary: #5aa9ff;--primary-variant: #4088d9;--secondary: #ff78a5;--error: #ff6b6b;--on-bg: #1f2a3a;--on-surface: #1f2a3a;--on-surface-medium: #6e7a8f;--card-gradient-front: #ffffff;--card-gradient-back: #ffffff;--card-border: rgba(31, 42, 58, .18);--input-bg: rgba(31, 42, 58, .04);--input-border: rgba(31, 42, 58, .15);--item-hover: rgba(90, 169, 255, .12)}html,body{height:100%}body{margin:0;font-family:Outfit,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--on-bg);background:repeating-linear-gradient(0deg,rgba(31,42,58,.03) 0 1px,transparent 1px 26px),repeating-linear-gradient(90deg,rgba(31,42,58,.02) 0 1px,transparent 1px 26px),radial-gradient(circle at 15% 20%,rgba(90,169,255,.22),transparent 40%),radial-gradient(circle at 85% 30%,rgba(255,120,165,.18),transparent 45%),var(--bg-dark);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{height:100vh;height:100dvh;display:flex;flex-direction:column;overflow:hidden}.app-container{display:flex;flex-direction:column;height:100%;padding:16px;padding-top:max(16px,env(safe-area-inset-top));padding-bottom:max(16px,env(safe-area-inset-bottom));max-width:480px;margin:0 auto;box-sizing:border-box;width:100%;position:relative}.app-container:before{content:"✿  ☆  ☁  ✎  ♡";position:absolute;top:10px;left:12px;right:12px;font-family:Yomogi,cursive;color:#1f2a3a40;letter-spacing:10px;font-size:.9rem;pointer-events:none}.stats-bar{display:flex;justify-content:space-around;padding:12px 0;background:transparent;border-radius:12px;margin-bottom:16px}.flash-header{display:flex;justify-content:space-between;align-items:center;padding:16px;background:#ffffffd9;border-radius:12px;border:2px solid rgba(255,120,165,.45);color:var(--secondary);font-weight:700;font-family:Yomogi,cursive;margin-bottom:16px;box-shadow:var(--elevation-1)}.exit-flash-btn{background:transparent;border:2px solid rgba(255,107,107,.65);color:var(--error);padding:6px 12px;border-radius:16px;cursor:pointer;display:flex;align-items:center;gap:4px;font-size:.8rem;font-family:Yomogi,cursive}.stat-item{display:flex;flex-direction:column;align-items:center;font-size:.75rem;color:var(--on-surface-medium);cursor:pointer;transition:all .2s ease;padding:8px 16px;border-radius:16px;font-family:Outfit,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:#ffffffbf;border:2px solid rgba(31,42,58,.18);box-shadow:4px 4px #1f2a3a1a;-webkit-user-select:none;user-select:none}.stat-item.active{color:var(--on-bg);border-color:#5aa9ff8c;box-shadow:4px 4px #5aa9ff2e}.stat-item svg{margin-bottom:4px}main{flex:1;min-height:0;display:flex;flex-direction:column;align-items:center;justify-content:flex-start;position:relative;width:100%;overflow:hidden}.card-area{display:flex;flex-direction:column;align-items:center;width:100%;height:100%;min-height:0;justify-content:center}.card-container{width:100%;max-width:340px;perspective:1000px;margin-bottom:16px}.swipe-wash{position:absolute;inset:-8px;border-radius:28px;pointer-events:none;z-index:2}.swipe-wash-right{background:radial-gradient(circle at 30% 30%,rgba(74,222,128,.55),transparent 55%)}.swipe-wash-left{background:radial-gradient(circle at 70% 30%,rgba(248,113,113,.55),transparent 55%)}.swipe-wash-up{background:radial-gradient(circle at 50% 20%,rgba(250,204,21,.55),transparent 55%)}.swipe-label{position:absolute;top:18px;z-index:3;pointer-events:none;display:inline-flex;align-items:center;gap:8px;padding:10px 12px;border-radius:12px;background:#ffffffd9;border:2px solid rgba(31,42,58,.18);color:var(--on-bg);font-weight:700;box-shadow:var(--elevation-1)}.swipe-label-right{left:18px;color:#16a34a;border-color:#16a34a59}.swipe-label-left{right:18px;color:#dc2626;border-color:#dc262659}.swipe-label-up{left:50%;transform:translate(-50%);top:auto;bottom:18px;color:#ca8a04;border-color:#ca8a0459}.card{position:relative;z-index:4}.card{width:100%;height:clamp(280px,55vh,520px);position:relative;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1);cursor:pointer;border-radius:26px;box-shadow:var(--elevation-4)}.card.flipped{transform:rotateY(180deg)}.card-face{position:absolute;width:100%;height:100%;backface-visibility:hidden;display:flex;flex-direction:column;align-items:center;justify-content:space-evenly;padding:32px;box-sizing:border-box;background:var(--bg-card);border-radius:26px;border:2px solid rgba(31,42,58,.18);box-shadow:6px 6px #1f2a3a1a;overflow:hidden}.card-face:before{content:"";position:absolute;inset:18px;border-radius:18px;border:2px dashed rgba(31,42,58,.14);pointer-events:none}.card-face.back{transform:rotateY(180deg);background:var(--bg-card);justify-content:space-evenly;padding-top:28px;overflow-y:auto}.card h2{font-size:2rem;font-weight:800;text-align:center;margin:0;line-height:1.2;font-family:Yomogi,cursive;letter-spacing:-.5px}.back-content{width:100%;text-align:left}.back-trans{font-size:1rem;line-height:1.6;white-space:pre-wrap;color:var(--on-surface);margin:0 0 12px}.back-label{font-size:.7rem;font-weight:800;color:var(--primary);text-transform:uppercase;letter-spacing:.5px;display:block;margin-bottom:4px;font-family:Yomogi,cursive}.back-synonyms{padding:8px 0;border-top:2px dashed rgba(31,42,58,.12);font-size:.85rem;color:var(--secondary)}.back-example{padding:8px 0;border-top:2px dashed rgba(31,42,58,.12)}.example-en{font-size:.85rem;color:var(--on-surface);margin:2px 0;font-style:italic}.example-cn{font-size:.8rem;color:var(--on-surface-medium);margin:2px 0;font-family:Yomogi,cursive}.card p{font-size:1.1rem;line-height:1.6;text-align:center;white-space:pre-wrap;color:var(--on-surface)}.phonetic{font-size:1rem;margin-top:8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;color:#1f2a3ab3;background:#5aa9ff24;border:2px solid rgba(31,42,58,.12);padding:4px 10px;border-radius:999px}.front-example{margin-top:20px;padding:12px;background:#5aa9ff14;border-radius:18px;border:2px solid rgba(31,42,58,.12);width:100%;box-sizing:border-box}.front-example .example-en{font-size:.85rem;margin:0 0 4px;text-align:left}.highlight-word{color:var(--secondary);font-weight:800;text-decoration:underline;text-decoration-style:wavy;text-decoration-color:var(--secondary);text-underline-offset:3px}.front-example .example-cn{font-size:.8rem;margin:0;text-align:left}.tap-hint{font-size:.8rem;color:#1f2a3a8c;margin-top:auto;opacity:.6;padding-top:16px;font-family:Yomogi,cursive}.action-buttons{display:flex;gap:24px;margin-top:16px}.btn-review,.btn-master,.btn-favorite{display:flex;flex-direction:column;align-items:center;justify-content:center;width:64px;height:64px;border-radius:50%;border:2px solid rgba(31,42,58,.18);background:#ffffffd9;color:var(--on-surface);box-shadow:var(--elevation-2);cursor:pointer;transition:transform .1s ease,background .2s ease}.btn-master{color:var(--primary);border:2px solid rgba(90,169,255,.3)}.btn-review{color:var(--error);border:2px solid rgba(255,107,107,.3)}.btn-favorite{color:gold;border:2px solid rgba(255,215,0,.3)}.btn-master:active,.btn-review:active,.btn-favorite:active{transform:scale(.95)}.action-buttons span{font-size:10px;margin-top:4px;opacity:.8}.empty-state{text-align:center;padding:40px}.empty-icon{font-size:48px;margin-bottom:16px}.btn-reset{background:transparent;border:2px solid rgba(90,169,255,.7);color:var(--primary);padding:8px 16px;border-radius:20px;cursor:pointer;display:flex;align-items:center;gap:8px;margin:24px auto 0;font-family:Yomogi,cursive;box-shadow:var(--elevation-1)}.btn-flash{background:var(--secondary);border:2px solid rgba(31,42,58,.12);color:#fff;font-weight:800;padding:10px 20px;border-radius:20px;margin-top:16px;cursor:pointer;display:flex;align-items:center;gap:8px;font-family:Yomogi,cursive;box-shadow:var(--elevation-1)}.list-view{width:100%;flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden}.list-view h3{margin-top:0;border-bottom:2px dashed rgba(31,42,58,.12);padding-bottom:8px;font-family:Yomogi,cursive}.search-header{padding-bottom:12px;position:sticky;top:0;background:transparent;z-index:5}.search-bar{position:relative;display:flex;align-items:center}.search-icon{position:absolute;left:12px;color:var(--on-surface-medium);pointer-events:none}.search-bar input{width:100%;background:#ffffffbf;border:2px solid rgba(31,42,58,.18);border-radius:20px;padding:10px 36px;color:var(--on-bg);font-family:inherit;font-size:.9rem;outline:none;transition:all .2s;box-shadow:4px 4px #1f2a3a14}.search-bar input:focus{border-color:var(--primary);background:#ffffffe6}.alphabet-filter{display:flex;overflow-x:auto;gap:8px;padding:8px 4px 12px;margin-top:8px;-webkit-overflow-scrolling:touch;scrollbar-width:none}.alpha-btn{background:#fff9;border:1px solid rgba(31,42,58,.1);border-radius:12px;padding:10px 14px;font-size:.9rem;color:var(--on-surface-medium);cursor:pointer;white-space:nowrap;font-family:Outfit,sans-serif;transition:all .2s;min-width:40px;text-align:center;display:flex;align-items:center;justify-content:center}.alpha-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600;box-shadow:var(--elevation-1)}.alpha-btn:hover:not(.active){background:#ffffffe6;color:var(--primary)}.clear-search{position:absolute;right:8px;background:transparent;border:none;color:var(--on-surface-medium);cursor:pointer;display:flex;padding:4px;border-radius:50%}.clear-search:hover{background:#1f2a3a14;color:var(--on-bg)}.word-list{display:flex;flex-direction:column;gap:10px;flex:1;min-height:0;overflow-y:auto;padding-right:4px;padding-bottom:24px;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.word-list::-webkit-scrollbar{width:6px}.word-list::-webkit-scrollbar-track{background:#1f2a3a0d;border-radius:3px}.word-list::-webkit-scrollbar-thumb{background:var(--primary);border-radius:3px}.word-item{background:#ffffffbf;padding:12px 16px;border-radius:12px;display:flex;justify-content:space-between;align-items:center;cursor:pointer;transition:background .2s;border:2px solid rgba(31,42,58,.1);box-shadow:3px 3px #1f2a3a0f}.word-item:hover{background:var(--item-hover)}.word-front-group{display:flex;flex-direction:column;min-width:0}.word-front{font-weight:800;color:var(--primary);font-family:Outfit,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}.word-phonetic{font-size:.75rem;color:var(--secondary);font-style:italic;opacity:.7}.word-back{color:var(--on-surface-medium);font-size:.9rem;max-width:60%;text-align:right;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.floating-controls{position:absolute;bottom:max(24px,env(safe-area-inset-bottom));right:24px;z-index:10;display:flex;flex-direction:column;align-items:center;gap:16px}.fab{width:56px;height:56px;border-radius:18px;background:#ffffffe0;color:var(--on-bg);border:2px solid rgba(31,42,58,.18);box-shadow:6px 6px #1f2a3a1f;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s;transform:rotate(2deg)}.fab-secondary{width:48px;height:48px;border-radius:16px;background:#ffffffe0;color:var(--secondary);border:2px solid rgba(255,120,165,.3);box-shadow:4px 4px #1f2a3a1a;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s;transform:rotate(-2deg)}.fab-secondary:hover{background:#ff78a524}.fab:hover{background:#5aa9ff24}.modal-overlay{position:fixed;inset:0;background:#1f2a3a80;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:100;display:flex;align-items:flex-end;justify-content:center;padding:16px;padding-bottom:max(16px,env(safe-area-inset-bottom))}.modal-overlay.center{align-items:center;padding:16px}.modal-content{background:var(--bg-card);width:100%;max-width:480px;border-radius:24px 24px 0 0;padding:24px;padding-bottom:max(24px,env(safe-area-inset-bottom));box-sizing:border-box;border:2px solid rgba(31,42,58,.12);box-shadow:0 -4px 20px #1f2a3a26;max-height:85dvh;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain}.modal-content h3{margin-top:0;font-family:Yomogi,cursive}.modal-content form{display:flex;flex-direction:column;gap:16px}.modal-content input,.modal-content textarea{background:var(--input-bg);border:2px solid var(--input-border);padding:12px;border-radius:12px;color:var(--on-bg);font-family:inherit;font-size:1rem;outline:none}.modal-content button.btn-submit{background:var(--primary);color:#fff;font-weight:800;padding:14px;border-radius:12px;border:2px solid rgba(31,42,58,.12);cursor:pointer;font-family:Yomogi,cursive;font-size:1rem;box-shadow:var(--elevation-1)}.review-options{display:flex;gap:12px;margin-bottom:24px}.option-btn{flex:1;padding:16px;border-radius:16px;background:#ffffffbf;border:2px solid rgba(31,42,58,.15);color:var(--on-surface-medium);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:8px;transition:all .2s;box-shadow:4px 4px #1f2a3a0f;font-family:Yomogi,cursive}.option-btn.selected{background:#5aa9ff1f;border-color:var(--primary);color:var(--primary);box-shadow:4px 4px #5aa9ff26}.option-btn:disabled{opacity:.5;cursor:not-allowed}button:disabled{opacity:.5;cursor:not-allowed}.detail-card-content{background:var(--bg-card);width:100%;max-width:360px;border-radius:24px;padding:32px 24px;box-sizing:border-box;position:relative;box-shadow:var(--elevation-4);max-height:80vh;overflow-y:auto;border:2px solid rgba(31,42,58,.15)}.close-btn{position:absolute;top:16px;right:16px;background:transparent;border:none;color:var(--on-surface-medium);cursor:pointer;display:flex;padding:8px;border-radius:50%}.close-btn:hover{background:#1f2a3a14;color:var(--on-bg)}.detail-header{text-align:center;margin-bottom:24px}.detail-header h2{font-size:2.5rem;margin:0 0 8px;color:var(--primary);font-family:Yomogi,cursive}.detail-header .phonetic{color:var(--secondary);font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:1.2rem}.detail-body{display:flex;flex-direction:column;gap:20px}.detail-section{display:flex;flex-direction:column;gap:8px}.detail-section .label{font-size:.75rem;text-transform:uppercase;letter-spacing:1px;color:var(--on-surface-medium);font-weight:800;font-family:Yomogi,cursive}.detail-section .meaning{font-size:1.1rem;line-height:1.5;margin:0}.example-box{background:#5aa9ff14;padding:12px;border-radius:12px;border:2px solid rgba(31,42,58,.1);border-left:3px solid var(--primary)}.example-en{margin:0 0 4px;font-style:italic;font-size:.95rem;line-height:1.4}.example-cn{margin:0;font-size:.85rem;color:var(--on-surface-medium);font-family:Yomogi,cursive}.tags{display:flex;flex-wrap:wrap;gap:8px}.tag{background:#5aa9ff24;color:var(--primary);padding:4px 10px;border-radius:999px;font-size:.85rem;border:2px solid rgba(31,42,58,.08);font-family:Yomogi,cursive}.detail-audio{width:100%;height:32px}.empty-list-text{text-align:center;color:var(--on-surface-medium);font-family:Outfit,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;padding:20px}.app-container:before,.flash-header,.exit-flash-btn,.stat-item,.card h2,.back-label,.example-cn,.tap-hint,.action-buttons span,.btn-reset,.btn-flash,.list-view h3,.option-btn,.modal-content h3,.detail-header h2,.detail-section .label,.tag{font-family:Outfit,system-ui,-apple-system,Segoe UI,Roboto,sans-serif}