:root{--seed-bg: #ffffff;--seed-fg: #0f172a;--seed-primary: #0891b2;--seed-accent: #e85d04;--seed-surface: #f8fafc;--seed-radius: 8px;--seed-spacing: 1;--seed-font-scale: 1;--bg: var(--seed-bg);--fg: var(--seed-fg);--fg-secondary: #475569;--fg-tertiary: #94a3b8;--primary: var(--seed-primary);--primary-light: color-mix(in srgb, var(--seed-primary) 10%, transparent);--primary-hover: color-mix(in srgb, var(--seed-primary) 85%, black);--accent: var(--seed-accent);--surface: var(--seed-surface);--surface-elevated: #ffffff;--border: #e2e8f0;--border-light: #f1f5f9;--radius-sm: calc(var(--seed-radius) * .5);--radius: var(--seed-radius);--radius-lg: calc(var(--seed-radius) * 1.5);--radius-xl: calc(var(--seed-radius) * 2);--shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--shadow: 0 4px 12px rgba(0, 0, 0, .06);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .08);--shadow-xl: 0 16px 48px rgba(0, 0, 0, .1);--font-sans: "Inter", "Noto Sans TC", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", monospace;--max-width: 1200px;--navbar-height: 64px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:calc(16px * var(--seed-font-scale));-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(--primary);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-hover)}.app{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;padding-top:var(--navbar-height)}.navbar{position:fixed;top:0;left:0;right:0;height:var(--navbar-height);background:#ffffffd9;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border);z-index:100;display:flex;align-items:center}.navbar-inner{max-width:var(--max-width);width:100%;margin:0 auto;padding:0 calc(24px * var(--seed-spacing));display:flex;align-items:center;justify-content:space-between}.navbar-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.25rem;color:var(--fg);text-decoration:none}.navbar-brand svg{color:var(--primary)}.navbar-nav{display:flex;align-items:center;gap:calc(8px * var(--seed-spacing))}.nav-link{padding:8px 16px;border-radius:var(--radius);color:var(--fg-secondary);font-size:.875rem;font-weight:500;transition:all .2s}.nav-link:hover{background:var(--surface);color:var(--fg)}.nav-link.active{background:var(--primary-light);color:var(--primary)}.lang-toggle{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--fg-secondary);font-size:.8125rem;font-weight:600;cursor:pointer;transition:all .2s;margin-left:4px;font-family:var(--font-sans)}.lang-toggle:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.search-container{position:relative;width:100%;max-width:640px}.search-input{width:100%;padding:14px 20px 14px 52px;border:2px solid var(--border);border-radius:var(--radius-lg);font-family:var(--font-sans);font-size:1rem;color:var(--fg);background:var(--bg);transition:all .25s;outline:none}.search-input::placeholder{color:var(--fg-tertiary)}.search-input:focus{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light)}.search-icon{position:absolute;left:18px;top:50%;transform:translateY(-50%);color:var(--fg-tertiary);pointer-events:none}.search-hero{width:100%;max-width:720px}.search-hero .search-input{padding:20px 24px 20px 60px;font-size:1.125rem;border-radius:var(--radius-xl)}.search-hero .search-icon{left:22px}.hero{padding:calc(80px * var(--seed-spacing)) calc(24px * var(--seed-spacing));text-align:center;display:flex;flex-direction:column;align-items:center;gap:24px;background:linear-gradient(180deg,var(--surface) 0%,var(--bg) 100%)}.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:6px 16px;background:var(--primary-light);color:var(--primary);border-radius:999px;font-size:.8125rem;font-weight:600;letter-spacing:.02em}.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:700;line-height:1.1;letter-spacing:-.03em;color:var(--fg)}.hero h1 span{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-subtitle{font-size:1.125rem;color:var(--fg-secondary);max-width:560px;line-height:1.7}.stats-bar{display:flex;justify-content:center;gap:calc(48px * var(--seed-spacing));padding:24px;flex-wrap:wrap}.stat-item{text-align:center}.stat-value{font-size:2rem;font-weight:700;color:var(--fg);letter-spacing:-.02em}.stat-label{font-size:.8125rem;color:var(--fg-tertiary);margin-top:4px}.stats-section{background:var(--surface);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:calc(56px * var(--seed-spacing)) calc(24px * var(--seed-spacing))}.stats-section-inner{max-width:var(--max-width);margin:0 auto;text-align:center}.stats-section-title{font-size:1.5rem;font-weight:700;color:var(--fg);margin-bottom:8px}.stats-section-desc{font-size:.9375rem;color:var(--fg-secondary);margin-bottom:40px}.stats-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:720px;margin:0 auto}.stat-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg, 12px);padding:28px 20px;transition:transform .2s,box-shadow .2s}.stat-card:hover{transform:translateY(-2px);box-shadow:0 4px 16px #0000000f}.stat-card-icon{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:10px;margin-bottom:14px}.stat-card-number{font-size:1.75rem;font-weight:800;color:var(--fg);letter-spacing:-.03em;line-height:1.1;margin-bottom:6px}.stat-card-label{font-size:.8125rem;font-weight:500;color:var(--fg-secondary)}.section{max-width:var(--max-width);margin:0 auto;padding:calc(48px * var(--seed-spacing)) calc(24px * var(--seed-spacing))}.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:calc(24px * var(--seed-spacing))}.section-title{font-size:1.5rem;font-weight:700;letter-spacing:-.02em;color:var(--fg)}.section-link{display:inline-flex;align-items:center;gap:6px;font-size:.875rem;font-weight:500;color:var(--primary)}.word-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:calc(16px * var(--seed-spacing))}.word-card{background:var(--surface-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:calc(24px * var(--seed-spacing));transition:all .25s;cursor:pointer;text-decoration:none;color:inherit;display:block}.word-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-2px);color:inherit}.word-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}.word-card-word{font-size:1.375rem;font-weight:700;letter-spacing:-.01em;color:var(--fg)}.word-card-phonetic{font-family:var(--font-mono);font-size:.8125rem;color:var(--fg-tertiary)}.word-card-pos{display:inline-flex;padding:2px 10px;background:var(--primary-light);color:var(--primary);border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.word-card-meaning{font-size:1rem;color:var(--fg-secondary);line-height:1.6;margin-top:8px}.word-card-footer{display:flex;align-items:center;gap:8px;margin-top:16px;padding-top:16px;border-top:1px solid var(--border-light)}.word-card-tag{display:inline-flex;align-items:center;gap:4px;padding:2px 8px;background:var(--surface);border-radius:var(--radius-sm);font-size:.75rem;color:var(--fg-tertiary)}.difficulty-beginner{color:#16a34a;background:#f0fdf4}.difficulty-intermediate{color:#d97706;background:#fffbeb}.difficulty-advanced{color:#dc2626;background:#fef2f2}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:calc(16px * var(--seed-spacing))}.category-card{background:var(--surface-elevated);border:1px solid var(--border);border-radius:var(--radius-lg);padding:calc(24px * var(--seed-spacing));transition:all .25s;cursor:pointer;text-decoration:none;color:inherit;display:block}.category-card:hover{border-color:var(--primary);box-shadow:var(--shadow);transform:translateY(-1px);color:inherit}.category-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary);border-radius:var(--radius);margin-bottom:16px}.category-name{font-size:1.125rem;font-weight:600;color:var(--fg);margin-bottom:4px}.category-name-en{font-size:.8125rem;color:var(--fg-tertiary);margin-bottom:8px}.category-count{font-size:.8125rem;color:var(--fg-tertiary)}.word-detail{max-width:800px;margin:0 auto;padding:calc(48px * var(--seed-spacing)) calc(24px * var(--seed-spacing))}.word-detail-header{margin-bottom:calc(48px * var(--seed-spacing))}.word-detail-top{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:16px}.word-detail-word{font-size:clamp(2.5rem,6vw,3.5rem);font-weight:700;letter-spacing:-.03em;color:var(--fg);line-height:1}.word-detail-phonetic{font-family:var(--font-mono);font-size:1.125rem;color:var(--fg-tertiary);margin-top:8px}.word-detail-meta{display:flex;gap:12px;margin-top:16px;flex-wrap:wrap}.meta-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:var(--radius-sm);font-size:.8125rem;font-weight:500}.meaning-section{margin-bottom:calc(32px * var(--seed-spacing));padding-bottom:calc(32px * var(--seed-spacing));border-bottom:1px solid var(--border-light)}.pos-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}.pos-badge{padding:4px 14px;background:var(--primary);color:#fff;border-radius:var(--radius-sm);font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em}.meaning-block{margin-bottom:28px}.meaning-number{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;background:var(--primary-light);color:var(--primary);border-radius:50%;font-size:.8125rem;font-weight:700;margin-right:12px;flex-shrink:0}.meaning-chinese{font-size:1.25rem;font-weight:600;color:var(--fg);display:flex;align-items:center;margin-bottom:8px}.meaning-english{font-size:.875rem;color:var(--fg-tertiary);margin-left:40px;margin-bottom:8px;font-style:italic}.usage-note{background:var(--surface);border-left:3px solid var(--primary);padding:14px 18px;margin:12px 0 16px 40px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:.9375rem;color:var(--fg-secondary);line-height:1.7}.examples-list{margin-left:40px;display:flex;flex-direction:column;gap:12px}.example-item{background:var(--surface);border-radius:var(--radius);padding:16px 20px;position:relative}.example-context{display:inline-block;padding:1px 8px;background:var(--primary-light);color:var(--primary);border-radius:var(--radius-sm);font-size:.6875rem;font-weight:600;margin-bottom:8px}.example-en{font-size:1rem;color:var(--fg);line-height:1.6;margin-bottom:6px;font-weight:500}.example-zh{font-size:.9375rem;color:var(--fg-secondary);line-height:1.6}.collocations-section{margin-bottom:calc(32px * var(--seed-spacing))}.collocation-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}.collocation-item{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;background:var(--surface);border-radius:var(--radius);border:1px solid var(--border-light)}.collocation-phrase{font-weight:600;font-size:.9375rem;color:var(--fg);font-family:var(--font-mono)}.collocation-meaning{font-size:.8125rem;color:var(--fg-secondary)}.synonym-list{display:flex;flex-direction:column;gap:12px}.synonym-item{display:flex;align-items:flex-start;gap:16px;padding:12px 16px;background:var(--surface);border-radius:var(--radius)}.synonym-word{font-weight:600;color:var(--primary);min-width:100px;font-size:.9375rem}.synonym-nuance{font-size:.875rem;color:var(--fg-secondary);line-height:1.6}.mistake-list{display:flex;flex-direction:column;gap:16px}.mistake-item{border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.mistake-wrong{background:#fef2f2;padding:12px 16px;display:flex;align-items:center;gap:8px;font-size:.9375rem;color:#dc2626}.mistake-correct{background:#f0fdf4;padding:12px 16px;display:flex;align-items:center;gap:8px;font-size:.9375rem;color:#16a34a;border-top:1px solid var(--border-light)}.mistake-explanation{padding:12px 16px;font-size:.875rem;color:var(--fg-secondary);line-height:1.6;border-top:1px solid var(--border-light)}.related-words{display:flex;flex-wrap:wrap;gap:8px}.related-word{display:inline-flex;align-items:center;gap:8px;padding:8px 16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);font-size:.875rem;color:var(--fg);transition:all .2s;text-decoration:none}.related-word:hover{border-color:var(--primary);color:var(--primary)}.related-word-meaning{color:var(--fg-tertiary);font-size:.8125rem}.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.875rem;color:var(--fg-tertiary);margin-bottom:24px}.breadcrumb a{color:var(--fg-tertiary)}.breadcrumb a:hover{color:var(--primary)}.loading{display:flex;align-items:center;justify-content:center;padding:80px 24px;color:var(--fg-tertiary);font-size:1rem}.loading-spinner{width:24px;height:24px;border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin .7s linear infinite;margin-right:12px}@keyframes spin{to{transform:rotate(360deg)}}.empty-state{text-align:center;padding:80px 24px}.empty-state svg{color:var(--fg-tertiary);margin-bottom:16px}.empty-state h3{font-size:1.25rem;color:var(--fg);margin-bottom:8px}.empty-state p{color:var(--fg-tertiary);font-size:.9375rem}.category-header{padding:calc(48px * var(--seed-spacing)) calc(24px * var(--seed-spacing));background:var(--surface);text-align:center}.category-header-icon{width:64px;height:64px;display:inline-flex;align-items:center;justify-content:center;background:var(--primary-light);color:var(--primary);border-radius:var(--radius-lg);margin-bottom:16px}.category-header h1{font-size:2rem;font-weight:700;letter-spacing:-.02em;margin-bottom:8px}.category-header p{color:var(--fg-secondary);font-size:1rem}.word-list{max-width:var(--max-width);margin:0 auto;padding:calc(32px * var(--seed-spacing)) calc(24px * var(--seed-spacing))}.word-list-item{display:flex;align-items:center;padding:16px 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 -16px;padding:16px;border-radius:var(--radius)}.word-list-word{font-size:1.125rem;font-weight:600;color:var(--fg);min-width:180px}.word-list-meaning{flex:1;color:var(--fg-secondary);font-size:.9375rem}.word-list-pos{color:var(--fg-tertiary);font-size:.8125rem;min-width:80px;text-align:right}@media (max-width: 768px){.hero{padding:48px 20px}.hero h1{font-size:1.75rem}.stats-bar{gap:24px}.stat-value{font-size:1.5rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:14px}.stat-card{padding:22px 16px}.stat-card-number{font-size:1.375rem}.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:1.125rem}.examples-list,.usage-note{margin-left:0}.collocation-grid{grid-template-columns:1fr}.word-list-word{min-width:120px}}@media (max-width: 480px){.section{padding:32px 16px}.word-card{padding:16px}.search-hero .search-input{padding:16px 16px 16px 48px;font-size:1rem}.stats-grid{grid-template-columns:repeat(2,1fr);gap:10px}.stat-card{padding:18px 12px}.stat-card-icon{width:36px;height:36px;margin-bottom:10px}.stat-card-number{font-size:1.25rem}.stat-card-label{font-size:.75rem}}.page-enter{opacity:0;transform:translateY(8px)}.page-enter-active{opacity:1;transform:translateY(0);transition:all .3s ease}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--surface)}::-webkit-scrollbar-thumb{background:var(--border);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--fg-tertiary)}.word-detail-phonetic-row{display:flex;align-items:center;gap:10px;margin-top:8px}.audio-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--border);border-radius:50%;background:var(--surface);color:var(--fg-secondary);cursor:pointer;transition:all .2s;flex-shrink:0}.audio-btn:hover{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.audio-btn.speaking{background:var(--primary);color:#fff;border-color:var(--primary);animation:audio-pulse 1s ease-in-out infinite}@keyframes audio-pulse{0%,to{box-shadow:0 0 #0891b24d}50%{box-shadow:0 0 0 8px #0891b200}}.bookmark-btn{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface);color:var(--fg-tertiary);cursor:pointer;transition:all .2s;flex-shrink:0}.bookmark-btn:hover,.bookmark-btn.active{background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.pagination{display:flex;align-items:center;justify-content:center;gap:6px;padding:32px 0 16px;flex-wrap:wrap}.pagination-btn{display:inline-flex;align-items:center;justify-content:center;min-width:36px;height:36px;padding:0 10px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--fg-secondary);font-size:.875rem;font-weight:500;font-family:var(--font-sans);cursor:pointer;transition:all .2s}.pagination-btn:hover:not(:disabled){background:var(--primary-light);color:var(--primary);border-color:var(--primary)}.pagination-btn.active{background:var(--primary);color:#fff;border-color:var(--primary);font-weight:600}.pagination-btn:disabled{opacity:.4;cursor:not-allowed}.pagination-ellipsis{display:inline-flex;align-items:center;justify-content:center;min-width:24px;height:36px;color:var(--fg-tertiary);font-size:.875rem;-webkit-user-select:none;user-select:none}.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 -16px;padding:0 16px;border-radius:var(--radius)}.bookmark-item-link{flex:1;min-width:0}.bookmark-remove-btn{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border:none;border-radius:var(--radius-sm);background:transparent;color:var(--fg-tertiary);cursor:pointer;transition:all .2s;flex-shrink:0;margin-left:8px}.bookmark-remove-btn:hover{background:#fef2f2;color:#dc2626}.nav-link-bookmark{display:inline-flex;align-items:center;gap:6px}.nav-bookmark-label{font-size:inherit}@media (max-width: 768px){.nav-bookmark-label{display:none}.bookmark-btn{width:38px;height:38px}.pagination{padding:24px 0 12px}.pagination-btn{min-width:32px;height:32px;font-size:.8125rem}}