:root{--bg: #f5f5f5;--fg: #000000;--fg-secondary: #555555;--fg-tertiary: #999999;--fg-muted: #bbbbbb;--surface: #ffffff;--surface-hover: #fafafa;--border: #e5e5e5;--border-light: #f0f0f0;--radius-sm: 6px;--radius: 12px;--radius-lg: 16px;--radius-xl: 24px;--shadow-sm: 0 1px 2px rgba(0,0,0,.04);--shadow: 0 2px 8px rgba(0,0,0,.04);--font-sans: "Inter", "Noto Sans TC", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--max-width: 1120px;--navbar-height: 56px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-sans);color:var(--fg);background:var(--bg);line-height:1.6;min-height:100vh}a{color:var(--fg);text-decoration:none;transition:opacity 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var(--border);border-radius:var(--radius);padding:24px 20px;transition:border-color .2s}.stat-card:hover{border-color:var(--fg-tertiary);transform:none;box-shadow:none}.stat-card-icon{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:8px;margin-bottom:12px;background:var(--bg);color:var(--fg-secondary)}.stat-card-number{font-size:1.5rem;font-weight:800;color:var(--fg);letter-spacing:-.03em;line-height:1;margin-bottom:4px}.stat-card-label{font-size:.6875rem;font-weight:500;color:var(--fg-tertiary);text-transform:uppercase;letter-spacing:.04em}.section{max-width:var(--max-width);margin:0 auto;padding:40px 32px}.section-header{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px}.section-title{font-size:1.25rem;font-weight:700;letter-spacing:-.02em;color:var(--fg)}.section-link{display:inline-flex;align-items:center;gap:4px;font-size:.8125rem;font-weight:500;color:var(--fg-tertiary)}.section-link:hover{color:var(--fg);opacity:1}.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:12px}.word-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;transition:border-color 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0;font-size:.8125rem;color:var(--fg-secondary);line-height:1.7}.examples-list{margin-left:34px;display:flex;flex-direction:column;gap:8px}.example-item{background:var(--bg);border-radius:var(--radius-sm);padding:14px 18px}.example-context{display:inline-block;padding:1px 7px;background:var(--surface);border:1px solid var(--border);color:var(--fg-secondary);border-radius:var(--radius-sm);font-size:.625rem;font-weight:600;margin-bottom:6px;text-transform:uppercase;letter-spacing:.04em}.example-en{font-size:.9375rem;color:var(--fg);line-height:1.6;margin-bottom:4px;font-weight:500}.example-zh{font-size:.8125rem;color:var(--fg-secondary);line-height:1.6}.collocations-section{margin-bottom:28px}.collocation-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:8px}.collocation-item{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--bg);border-radius:var(--radius-sm);border:1px solid var(--border-light)}.collocation-phrase{font-weight:600;font-size:.8125rem;color:var(--fg);font-family:var(--font-mono)}.collocation-meaning{font-size:.75rem;color:var(--fg-tertiary)}.synonym-list{display:flex;flex-direction:column;gap:8px}.synonym-item{display:flex;align-items:flex-start;gap:14px;padding:10px 14px;background:var(--bg);border-radius:var(--radius-sm)}.synonym-word{font-weight:600;color:var(--fg);min-width:90px;font-size:.875rem}.synonym-nuance{font-size:.8125rem;color:var(--fg-secondary);line-height:1.6}.mistake-list{display:flex;flex-direction:column;gap:12px}.mistake-item{border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}.mistake-wrong{background:var(--bg);padding:10px 14px;display:flex;align-items:center;gap:6px;font-size:.875rem;color:var(--fg-secondary);text-decoration:line-through}.mistake-correct{background:var(--surface);padding:10px 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var(--border);border-top-color:var(--fg);border-radius:50%;animation:spin .6s linear infinite;margin-right:10px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:80px 24px}.empty-state svg{color:var(--fg-muted);margin-bottom:14px}.empty-state h3{font-size:1.125rem;color:var(--fg);margin-bottom:6px;font-weight:700}.empty-state p{color:var(--fg-tertiary);font-size:.875rem}.category-header{padding:40px 32px;background:var(--surface);border-bottom:1px solid var(--border);text-align:center}.category-header-icon{width:48px;height:48px;display:inline-flex;align-items:center;justify-content:center;background:var(--bg);color:var(--fg-secondary);border-radius:12px;margin-bottom:12px}.category-header h1{font-size:1.75rem;font-weight:800;letter-spacing:-.03em;margin-bottom:6px}.category-header p{color:var(--fg-tertiary);font-size:.875rem}.word-list{max-width:var(--max-width);margin:0 auto;padding:28px 32px}.word-list-item{display:flex;align-items:center;padding:14px 0;border-bottom:1px solid var(--border-light);text-decoration:none;color:inherit;transition:background .15s}.word-list-item:hover{background:var(--surface);color:inherit;margin:0 -14px;padding:14px;border-radius:var(--radius-sm);opacity:1}.word-list-word{font-size:1rem;font-weight:600;color:var(--fg);min-width:160px;letter-spacing:-.01em}.word-list-meaning{flex:1;color:var(--fg-secondary);font-size:.875rem}.word-list-pos{color:var(--fg-muted);font-size:.75rem;min-width:70px;text-align:right}.bookmarks-list{display:flex;flex-direction:column;gap:0}.bookmark-item-row{display:flex;align-items:center;border-bottom:1px solid var(--border-light);transition:background .15s}.bookmark-item-row:hover{background:var(--surface);margin:0 -14px;padding:0 14px;border-radius:var(--radius-sm)}.bookmark-item-link{flex:1;min-width:0}.bookmark-remove-btn{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--fg-muted);cursor:pointer;transition:all .2s;flex-shrink:0;margin-left:6px}.bookmark-remove-btn:hover{background:var(--bg);color:var(--fg)}.nav-link-bookmark{display:inline-flex;align-items:center;gap:4px}.nav-bookmark-label{font-size:inherit}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--fg-muted)}.page-enter{opacity:0;transform:translateY(4px)}.page-enter-active{opacity:1;transform:translateY(0);transition:all .2s ease}@media (max-width: 768px){.hero{padding:48px 20px 32px}.hero h1{font-size:2rem}.stats-bar{gap:24px}.stat-value{font-size:1.375rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:10px}.stat-card{padding:18px 14px}.stat-card-number{font-size:1.25rem}.word-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:repeat(auto-fill,minmax(160px,1fr))}.navbar-nav{display:none}.word-detail-word{font-size:2rem}.meaning-chinese{font-size:1rem}.examples-list,.usage-note{margin-left:0}.collocation-grid{grid-template-columns:1fr}.word-list-word{min-width:110px}.nav-bookmark-label{display:none}.bookmark-btn{width:32px;height:32px}.pagination{padding:20px 0 10px}.pagination-btn{min-width:28px;height:28px;font-size:.75rem}}@media (max-width: 480px){.section{padding:28px 16px}.word-card{padding:18px}.search-hero .search-input{padding:14px 18px 14px 44px;font-size:.9375rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:8px}.stat-card{padding:14px 10px}.stat-card-icon{width:28px;height:28px;margin-bottom:8px}.stat-card-number{font-size:1.125rem}.stat-card-label{font-size:.625rem}}