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.highlight{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;position:relative}.hero-subtitle{font-size:1.2rem;color:var(--text-secondary);margin-bottom:40px;position:relative;animation:slideUp .8s ease-out .15s both;letter-spacing:1px}.search-container{max-width:640px;margin:0 auto 20px;position:relative}.search-box{display:flex;align-items:center;background:var(--bg-secondary);border:2px solid var(--border);border-radius:18px;padding:6px 6px 6px 20px;transition:all var(--transition);box-shadow:var(--card-shadow);animation:slideUp .8s ease-out .3s both}.search-box:focus-within{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-glow),0 8px 32px #b222221a}.search-box input{flex:1;border:none;background:none;outline:none;font-size:16px;color:var(--text-primary);padding:12px 0;font-family:inherit}.search-box input::placeholder{color:var(--text-muted)}.search-box button{background:var(--accent-gradient);color:#fff;border:none;border-radius:12px;padding:12px 28px;font-size:.95rem;font-weight:600;cursor:pointer;transition:all var(--transition);white-space:nowrap;letter-spacing:.3px}.search-box button:hover{opacity:.9;transform:translateY(-1px);box-shadow:0 4px 16px #b222224d}.search-box button:active{transform:translateY(0)}.autocomplete-list{position:absolute;top:calc(100% + 8px);left:0;right:0;background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;box-shadow:var(--card-shadow-hover);max-height:360px;overflow-y:auto;z-index:100;display:none;animation:slideDown .25s ease-out;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.autocomplete-list.active{display:block}.autocomplete-item{padding:14px 20px;cursor:pointer;display:flex;align-items:center;gap:14px;transition:all .15s;border-bottom:1px solid var(--border)}.autocomplete-item:last-child{border-bottom:none}.autocomplete-item:hover,.autocomplete-item.highlighted{background:var(--accent-light)}.autocomplete-item .char{font-family:"Noto Serif SC",serif;font-size:1.4rem;color:var(--text-primary);flex-shrink:0;width:36px;text-align:center}.autocomplete-item .info{flex:1;min-width:0}.autocomplete-item .info .pinyin{font-size:.85rem;color:var(--accent);font-weight:500}.autocomplete-item .info .meaning{font-size:.82rem;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.autocomplete-item .type-badge{font-size:.7rem;padding:3px 10px;border-radius:8px;background:var(--accent-light);color:var(--accent);font-weight:600;flex-shrink:0}.hot-searches{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:28px;position:relative;animation:slideUp .8s ease-out .45s both}.hot-searches .label{font-size:.85rem;color:var(--text-muted);padding:4px 0;margin-right:4px}.hot-tag{display:inline-block;padding:6px 16px;background:var(--tag-bg);color:var(--text-secondary);border-radius:24px;font-size:.85rem;text-decoration:none;transition:all var(--transition);border:1px solid transparent}.hot-tag:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #b2222233;border-color:var(--accent)}.hsk-quick-links{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:24px;position:relative;animation:slideUp .8s ease-out .5s both}.hsk-label{font-size:.85rem;color:var(--text-muted);padding:6px 0;margin-right:4px}.hsk-link{display:inline-block;padding:6px 14px;background:var(--accent-light);color:var(--accent);border-radius:20px;font-size:.85rem;font-weight:600;text-decoration:none;transition:all var(--transition)}.hsk-link:hover{background:var(--accent);color:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #b2222233;border-color:var(--accent)}.stats-bar{display:flex;justify-content:center;gap:60px;margin-top:40px;padding:32px;background:var(--bg-secondary);border-radius:20px;border:1px solid var(--border)}.stat-item{text-align:center;transition:transform var(--transition)}.stat-item:hover{transform:translateY(-4px)}.stat-number{font-size:2rem;font-weight:800;color:var(--accent);font-family:Inter,sans-serif}.stat-label{font-size:.85rem;color:var(--text-muted);margin-top:4px}.section-title{font-size:1.5rem;font-weight:700;color:var(--text-primary);margin-bottom:24px;display:flex;align-items:center;gap:10px}.section-title:before{content:"";width:4px;height:24px;background:var(--accent-gradient);border-radius:2px}.features{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:20px}.feature-card{padding:32px;background:var(--bg-secondary);border-radius:18px;border:1px solid var(--border);transition:all var(--transition);color:var(--text-primary)}.feature-card:hover{border-color:var(--accent);transform:translateY(-6px);box-shadow:var(--card-shadow-hover)}.feature-icon{font-size:2rem;margin-bottom:16px;display:block}.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:10px}.feature-card p{font-size:.92rem;color:var(--text-secondary);line-height:1.7;margin-bottom:16px}.feature-link{display:inline-flex;align-items:center;gap:6px;font-size:.9rem;font-weight:600;color:var(--accent);text-decoration:none;transition:all var(--transition)}.feature-link:hover{gap:12px}.popular-section{max-width:1200px;margin:40px auto;padding:0 20px}.popular-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(100px,1fr));gap:12px}.popular-char{display:flex;flex-direction:column;align-items:center;padding:16px 8px;background:var(--bg-secondary);border-radius:12px;border:1px solid var(--border);transition:all var(--transition);text-decoration:none;color:var(--text-primary)}.popular-char:hover{border-color:var(--accent);background:var(--accent-light);transform:translateY(-3px)}.popular-char .char{font-family:"Noto Serif SC",serif;font-size:2rem;font-weight:700;margin-bottom:4px}.popular-char .meaning{font-size:.78rem;color:var(--text-muted)}.hero-description{font-size:1.05rem;color:var(--text-secondary);margin-top:8px;position:relative;animation:slideUp .8s ease-out .2s both}.features-section,.quick-tips{max-width:1200px;margin:40px auto;padding:0 20px}.tips-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.tip-card{padding:24px;background:var(--bg-secondary);border-radius:16px;border:1px solid var(--border);text-align:center;transition:all var(--transition)}.tip-card:hover{border-color:var(--accent);transform:translateY(-4px);box-shadow:var(--card-shadow-hover)}.tip-icon{font-size:2rem;margin-bottom:12px;display:block}.tip-card h4{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:8px}.tip-card p{font-size:.87rem;color:var(--text-secondary);line-height:1.6}.idiom-char{font-family:"Noto Serif SC",serif;font-size:2.5rem;line-height:1.3;color:var(--text-primary);margin-bottom:6px}.idiom-pinyin{font-size:1.15rem;color:var(--accent);font-weight:500;margin-bottom:20px}.meaning-box{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:20px 0}.meaning-box .box{padding:20px;border-radius:14px;background:var(--bg-tertiary);transition:all var(--transition);border:1px solid var(--border)}.meaning-box .box:hover{border-color:var(--accent);transform:translateY(-2px)}.meaning-box .box-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.8px;color:var(--text-muted);margin-bottom:8px}.meaning-box .box-content{font-size:.97rem;color:var(--text-primary)}.origin-box{padding:20px;background:var(--accent-light);border-radius:14px;margin:20px 0;font-size:.93rem;color:var(--text-secondary);line-height:1.7;border-left:3px solid var(--accent)}.synonym-list{display:flex;flex-wrap:wrap;gap:8px}.synonym-tag{display:inline-block;padding:5px 14px;border-radius:10px;font-size:.9rem;font-family:"Noto Serif SC",serif;transition:all var(--transition)}.synonym-tag.synonym{background:#22c55e1a;color:#16a34a}.dark .synonym-tag.synonym{background:#22c55e26;color:#4ade80}.synonym-tag.antonym{background:#ef44441a;color:#dc2626}.dark .synonym-tag.antonym{background:#ef444426;color:#f87171}.stroke-container{display:flex;flex-direction:column;align-items:center;gap:20px}.stroke-canvas{width:220px;height:220px;border:2px solid var(--border);border-radius:16px;background:var(--bg-primary);transition:border-color var(--transition)}.stroke-canvas:hover{border-color:var(--accent)}.stroke-controls{display:flex;align-items:center;gap:12px}.stroke-btn{padding:8px 18px;border:1px solid var(--border);background:var(--bg-secondary);color:var(--text-primary);border-radius:10px;cursor:pointer;font-size:.87rem;font-weight:500;transition:all var(--transition)}.stroke-btn:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}.stroke-btn.primary{background:var(--accent-gradient);color:#fff;border-color:transparent}.stroke-btn.primary:hover{opacity:.9;box-shadow:0 4px 12px #c41e3a4d}.stroke-counter{font-size:.92rem;color:var(--text-muted);font-weight:500;min-width:50px;text-align:center}.empty-state{text-align:center;padding:80px 20px}.empty-state .icon{font-size:4rem;margin-bottom:20px;display:block;animation:float 3s ease-in-out infinite}.empty-state h2{font-size:1.4rem;margin-bottom:10px}.empty-state p{color:var(--text-secondary);font-size:1rem}.about-content{max-width:800px;margin:0 auto}.about-section{margin-bottom:40px}.about-section h2{font-size:1.35rem;font-weight:700;margin-bottom:16px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.about-section h2:before{content:"";display:inline-block;width:4px;height:22px;background:var(--accent-gradient);border-radius:2px}.about-section p,.about-section li{font-size:.97rem;color:var(--text-secondary);line-height:1.8;margin-bottom:12px}.privacy-content{max-width:800px;margin:0 auto}.privacy-content h2{font-size:1.35rem;font-weight:700;margin:28px 0 14px;color:var(--text-primary);display:flex;align-items:center;gap:8px}.privacy-content h2:before{content:"";display:inline-block;width:4px;height:22px;background:var(--accent-gradient);border-radius:2px}.privacy-content h3{font-size:1.08rem;font-weight:600;margin:20px 0 10px;color:var(--text-primary)}.privacy-content p,.privacy-content li{font-size:.97rem;color:var(--text-secondary);line-height:1.8;margin-bottom:10px}.loading-spinner{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:80px 20px}.spinner{width:44px;height:44px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}.loading-spinner p{margin-top:16px;color:var(--text-muted);font-size:.92rem}.not-found{text-align:center;padding:80px 20px}.not-found .icon{font-size:4rem;margin-bottom:16px;display:block}.not-found h2{font-size:1.4rem;margin-bottom:8px}.not-found p{color:var(--text-secondary)}.breadcrumb{display:flex;align-items:center;gap:6px;font-size:.87rem;color:var(--text-muted);margin-bottom:20px;flex-wrap:wrap}.breadcrumb a{color:var(--text-muted);text-decoration:none;transition:color var(--transition)}.breadcrumb a:hover{color:var(--accent)}.breadcrumb .sep{color:var(--text-muted)}.nav-external{color:var(--accent)!important;font-weight:600}.hsk-tag{background:#22c55e1f;color:#16a34a}.dark .hsk-tag{background:#22c55e2e;color:#4ade80}.footer-disclaimer{max-width:1200px;margin:16px auto 0;padding-top:16px;border-top:1px solid var(--border);font-size:.78rem;color:var(--text-muted);line-height:1.6;text-align:center;opacity:.8}.scroll-top{position:fixed;bottom:24px;right:24px;width:44px;height:44px;border-radius:12px;background:var(--accent-gradient);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.2rem;box-shadow:0 4px 20px #b222224d;transition:all var(--transition);opacity:0;pointer-events:none;z-index:40}.scroll-top.visible{opacity:1;pointer-events:auto}.scroll-top:hover{transform:translateY(-3px);box-shadow:0 8px 28px #b2222266}.site-footer{background:var(--bg-secondary);border-top:1px solid var(--border);padding:48px 20px calc(24px + env(safe-area-inset-bottom));margin-top:60px}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;max-width:1200px;margin:0 auto 32px}.footer-brand h4{font-size:1.3rem;font-weight:800;color:var(--accent);margin-bottom:12px}.footer-brand p{font-size:.9rem;color:var(--text-secondary);line-height:1.7}.footer-col h5{font-size:.85rem;font-weight:700;color:var(--text-primary);margin-bottom:14px;text-transform:uppercase;letter-spacing:.5px}.footer-col ul{list-style:none;padding:0}.footer-col li{margin-bottom:10px}.footer-col a{font-size:.88rem;color:var(--text-secondary);text-decoration:none;transition:color var(--transition)}.footer-col a:hover{color:var(--accent)}.footer-bottom{display:flex;justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding-top:20px;border-top:1px solid var(--border);font-size:.82rem;color:var(--text-muted)}.content-layout{display:grid;grid-template-columns:1fr 320px;gap:32px;max-width:1200px;margin:0 auto;padding:0 20px}.content-main,.content-sidebar{min-width:0}.page-header{text-align:center;padding:60px 20px 36px;background:radial-gradient(ellipse at 30% 50%,var(--ink-light) 0%,transparent 50%),radial-gradient(ellipse at 70% 50%,var(--ink-light) 0%,transparent 50%)}.page-header h1{font-family:"Noto Serif SC",serif;font-size:2rem;font-weight:700;color:var(--text-primary);margin-bottom:8px}.page-header .chinese-subtitle{font-family:"Noto Serif SC",serif;font-size:1.2rem;color:var(--accent);font-weight:400;margin-left:8px;opacity:.7}.page-header p{font-size:1.05rem;color:var(--text-secondary)}.result-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:20px;padding:36px;margin-bottom:24px;box-shadow:var(--card-shadow)}.result-header{display:flex;align-items:flex-start;gap:24px;margin-bottom:28px;padding-bottom:24px;border-bottom:1px solid var(--border)}.result-char{font-family:"Noto Serif SC",serif;font-size:5rem;font-weight:700;line-height:1;color:var(--text-primary);flex-shrink:0}.result-char-details{flex:1;min-width:0}.result-pinyin{font-size:1.5rem;color:var(--accent);font-weight:600;margin-bottom:12px}.result-meta{display:flex;flex-wrap:wrap;gap:8px}.meta-tag{display:inline-block;padding:4px 12px;background:var(--tag-bg);color:var(--text-secondary);border-radius:8px;font-size:.82rem;font-weight:500}.result-section{margin-bottom:28px}.result-section:last-child{margin-bottom:0}.result-section h3{font-size:1.1rem;font-weight:700;color:var(--text-primary);margin-bottom:14px;display:flex;align-items:center;gap:8px}.result-section h3:before{content:"";width:3px;height:18px;background:var(--accent-gradient);border-radius:2px}.definition-list{list-style:none;padding:0}.definition-list li{display:flex;gap:12px;padding:10px 0;border-bottom:1px solid var(--border);align-items:baseline}.definition-list li:last-child{border-bottom:none}.pos{font-size:.78rem;font-weight:600;color:var(--accent);background:var(--accent-light);padding:2px 10px;border-radius:6px;flex-shrink:0;text-transform:uppercase;letter-spacing:.3px}.meaning{font-size:.95rem;color:var(--text-secondary);line-height:1.6}.example-item{padding:16px;background:var(--bg-tertiary);border-radius:12px;margin-bottom:12px;border:1px solid var(--border)}.example-item:last-child{margin-bottom:0}.example-item .chinese{font-family:"Noto Serif SC",serif;font-size:1.15rem;color:var(--text-primary);margin-bottom:6px;line-height:1.6}.example-item .pinyin{font-size:.88rem;color:var(--accent);margin-bottom:4px}.example-item .english{font-size:.88rem;color:var(--text-muted);font-style:italic}.related-words{display:flex;flex-wrap:wrap;gap:8px}.related-word{display:inline-flex;align-items:center;padding:8px 16px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:10px;font-family:"Noto Serif SC",serif;font-size:1.1rem;font-weight:600;color:var(--text-primary);text-decoration:none;transition:all var(--transition)}.related-word:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-light);transform:translateY(-2px)}.ad-container{display:flex;justify-content:center;padding:16px 0}.mobile-ad{display:none}@media(max-width:1024px){.content-layout{grid-template-columns:1fr}.content-sidebar{display:none}.mobile-ad{display:flex;margin:24px 0}.ad-banner{width:100%;max-width:728px;height:90px}.stats-bar{gap:32px}}@media(max-width:768px){.nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:20px 24px;flex-direction:column;align-items:flex-start;gap:14px;box-shadow:var(--card-shadow-hover);animation:slideDown .3s ease-out}.nav-links.open,.mobile-menu-btn{display:flex}.hero{padding:60px 16px}.hero h1{font-size:2.2rem}.hero-subtitle{font-size:1rem}.features{grid-template-columns:1fr;gap:20px}.footer-grid{grid-template-columns:1fr 1fr;gap:28px}.footer-bottom{flex-direction:column;gap:10px;text-align:center}.meaning-box{grid-template-columns:1fr}.result-card{padding:28px}.result-header{flex-direction:column;align-items:center;text-align:center}.result-char{font-size:3.5rem}.page-header h1{font-size:1.6rem}.page-header{padding:40px 20px 28px}.ad-banner{width:100%;max-width:320px;height:100px}.ad-sidebar{width:100%;max-width:300px}.stats-bar{gap:20px;flex-wrap:wrap}.stat-number{font-size:1.5rem}.popular-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr))}.popular-char{padding:14px 6px}.popular-char .char{font-size:1.6rem}}@media(max-width:480px){.hero{padding:48px 16px 40px}.hero h1{font-size:1.8rem}.search-box{flex-direction:column;gap:8px;padding:14px;border-radius:14px}.search-box button{width:100%;border-radius:10px}.result-char{font-size:2.8rem}.feature-card{padding:28px 20px}.result-card{padding:20px;border-radius:18px}.stat-number{font-size:1.3rem}}