:root{--primary-50:#eff8ff;--primary-100:#dbeafe;--primary-200:#bfdbfe;--primary-300:#93c5fd;--primary-400:#60a5fa;--primary-500:#3b82f6;--primary-600:#2563eb;--primary-700:#1d4ed8;--primary-800:#1e40af;--primary-900:#1e3a8a;--neutral-0:#fff;--neutral-25:#fcfcfd;--neutral-50:#f8fafc;--neutral-100:#f1f5f9;--neutral-200:#e2e8f0;--neutral-300:#cbd5e1;--neutral-400:#94a3b8;--neutral-500:#64748b;--neutral-600:#475569;--neutral-700:#334155;--neutral-800:#1e293b;--neutral-900:#0f172a;--success-50:#ecfdf5;--success-500:#10b981;--success-600:#059669;--warning-50:#fffbeb;--warning-500:#f59e0b;--warning-600:#d97706;--error-50:#fef2f2;--error-500:#ef4444;--error-600:#dc2626;--shadow-xs:0 1px 2px rgba(0,0,0,.04);--shadow-sm:0 1px 3px rgba(0,0,0,.06),0 1px 2px rgba(0,0,0,.04);--shadow-base:0 4px 6px -1px rgba(0,0,0,.08),0 2px 4px -1px rgba(0,0,0,.04);--shadow-md:0 10px 15px -3px rgba(0,0,0,.08),0 4px 6px -2px rgba(0,0,0,.04);--shadow-lg:0 20px 25px -5px rgba(0,0,0,.08),0 10px 10px -5px rgba(0,0,0,.04);--shadow-xl:0 25px 50px -12px rgba(0,0,0,.12);--shadow-primary:0 8px 25px -6px rgba(37,99,235,.25);--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI","Roboto",sans-serif;--text-xs:0.75rem;--text-sm:0.875rem;--text-base:1rem;--text-lg:1.125rem;--text-xl:1.25rem;--text-2xl:1.5rem;--text-3xl:1.875rem;--text-4xl:2.25rem;--text-5xl:3rem;--space-1:0.25rem;--space-2:0.5rem;--space-3:0.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--transition-base:200ms cubic-bezier(0.4,0,0.2,1)}.card-enterprise{background:var(--neutral-0);border:1px solid var(--neutral-200);border-radius:12px;box-shadow:var(--shadow-sm);transition:all var(--transition-base);overflow:hidden}.card-enterprise:hover{border-color:var(--neutral-300);box-shadow:var(--shadow-md);transform:translateY(-2px)}.card-enterprise-interactive{cursor:pointer}.card-enterprise-interactive:hover{border-color:var(--primary-200);box-shadow:0 8px 25px -6px rgba(37,99,235,.12),var(--shadow-md)}.enterprise-search-container{position:relative;max-width:640px;margin:0 auto}.enterprise-search-wrapper{position:relative;display:flex;align-items:center;background:var(--neutral-0);border:2px solid var(--neutral-200);border-radius:16px;box-shadow:var(--shadow-base);transition:all var(--transition-base)}.enterprise-search-wrapper:focus-within{border-color:var(--primary-500);box-shadow:0 0 0 3px rgba(37,99,235,.12),var(--shadow-lg)}.enterprise-search-input{flex:1;padding:16px 20px 16px 56px;font-size:var(--text-lg);line-height:1.5;background:transparent;border:none;outline:none;color:var(--neutral-800);font-family:var(--font-sans)}.enterprise-search-input::-moz-placeholder{color:var(--neutral-400);font-weight:400}.enterprise-search-input::placeholder{color:var(--neutral-400);font-weight:400}.search-icon-container{position:absolute;left:20px;display:flex;align-items:center;justify-content:center}.search-icon{width:24px;height:24px;color:var(--neutral-400)}.btn-enterprise{position:relative;display:inline-flex;align-items:center;justify-content:center;padding:var(--space-3) var(--space-6);font-size:var(--text-base);font-weight:500;line-height:1.5;border-radius:8px;transition:all var(--transition-base);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;overflow:hidden}.btn-enterprise-primary{background:var(--primary-600);color:var(--neutral-0);border:1px solid var(--primary-600)}.btn-enterprise-primary:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,transparent,hsla(0,0%,100%,.15));opacity:0;transition:opacity var(--transition-base)}.btn-enterprise-primary:hover:before{opacity:1}.btn-enterprise-primary:hover{background:var(--primary-700);border-color:var(--primary-700);transform:translateY(-1px);box-shadow:var(--shadow-primary)}.btn-enterprise-primary:active{transform:translateY(0);box-shadow:var(--shadow-sm)}.enterprise-header{position:sticky;top:0;z-index:50;background:hsla(0,0%,100%,.85);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--neutral-200);transition:all var(--transition-base)}.header-container{max-width:1280px;margin:0 auto;padding:0 var(--space-6);height:64px;display:flex;align-items:center;justify-content:space-between}.brand-logo,.header-brand{display:flex;align-items:center;gap:var(--space-3)}.logo-icon{display:flex;align-items:center;justify-content:center;width:40px;height:40px;background:linear-gradient(135deg,var(--primary-600) 0,var(--primary-700) 100%);border-radius:10px;box-shadow:var(--shadow-sm)}.logo-text{font-weight:700;font-size:var(--text-base);color:var(--neutral-0);letter-spacing:-.025em}.brand-name{font-size:var(--text-xl);font-weight:600;color:var(--neutral-800);letter-spacing:-.025em}.enterprise-badge{display:inline-flex;align-items:center;padding:2px 8px;background:var(--primary-50);border:1px solid var(--primary-200);border-radius:12px;font-size:11px;font-weight:500;color:var(--primary-700);text-transform:uppercase;letter-spacing:.025em}.skeleton{animation:skeleton-loading 1.5s ease-in-out infinite;background:linear-gradient(90deg,var(--neutral-200) 0,var(--neutral-100) 50%,var(--neutral-200) 100%);background-size:200% 100%;border-radius:4px}@keyframes skeleton-loading{0%{background-position:200% 0}to{background-position:-200% 0}}.focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:4px}.tab-enterprise{position:relative;padding:var(--space-2) var(--space-4);font-size:var(--text-sm);font-weight:500;color:var(--neutral-600);background:transparent;border:none;border-radius:8px;cursor:pointer;transition:all var(--transition-fast)}.tab-enterprise:hover{color:var(--neutral-800);background:var(--neutral-50)}.tab-enterprise-active{color:var(--primary-600);background:var(--primary-50)}.tab-enterprise-active:after{content:"";position:absolute;bottom:-1px;left:var(--space-4);right:var(--space-4);height:2px;background:var(--primary-600);border-radius:2px}@media (max-width:768px){.enterprise-search-input{font-size:var(--text-base);padding:14px 16px 14px 50px}.card-enterprise{border-radius:16px;margin:0 var(--space-4)}.card-enterprise:hover{transform:none}}@media (prefers-contrast:high){.card-enterprise{border-width:2px;border-color:var(--neutral-900)}.btn-enterprise{border-width:2px}.enterprise-search-wrapper{border-width:3px}}.trending-enterprise-container{background:var(--neutral-0);border:1px solid var(--neutral-200);border-radius:16px;box-shadow:var(--shadow-sm);transition:all var(--transition-base);overflow:hidden}.trending-enterprise-container:hover{box-shadow:var(--shadow-md)}.heat-progress-bar{height:6px;background:var(--neutral-200);border-radius:3px;overflow:hidden;position:relative}.heat-progress-fill:after{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,transparent,hsla(0,0%,100%,.3) 50%,transparent);animation:shimmer 2s infinite}@keyframes shimmer{0%{transform:translateX(-100%)}to{transform:translateX(100%)}}.rank-badge{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;font-weight:700;font-size:var(--text-sm);transition:all var(--transition-base)}.rank-badge:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,hsla(0,0%,100%,.2),transparent 50%,hsla(0,0%,100%,.1));opacity:0;transition:opacity var(--transition-base)}.rank-badge:hover:before{opacity:1}.rank-badge-hot{background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;box-shadow:0 4px 12px rgba(239,68,68,.3)}.rank-badge-warm{background:linear-gradient(135deg,#f97316,#eab308);color:#fff;box-shadow:0 4px 12px rgba(249,115,22,.3)}.rank-badge-cool{background:linear-gradient(135deg,var(--neutral-100) 0,var(--neutral-200) 100%);color:var(--neutral-600);box-shadow:var(--shadow-xs)}.tab-enterprise-enhanced{position:relative;padding:28px 40px;font-size:17px;font-weight:600;color:var(--neutral-700);background:transparent;border:none;border-bottom:3px solid transparent;cursor:pointer;transition:all var(--transition-fast);overflow:hidden;min-height:72px;letter-spacing:.03em;line-height:1.3;text-transform:none}.tab-enterprise-enhanced:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:var(--neutral-50);opacity:0;transition:opacity var(--transition-fast)}.tab-enterprise-enhanced:hover{color:var(--neutral-800)}.tab-enterprise-enhanced:hover:before{opacity:1}.tab-enterprise-enhanced-active{color:var(--primary-800);background:linear-gradient(to bottom,var(--primary-50),var(--primary-25));border-bottom:4px solid var(--primary-600);font-weight:700;box-shadow:inset 0 -4px 0 0 var(--primary-600)}.tab-enterprise-enhanced-active:after{content:"";position:absolute;bottom:-4px;left:40px;right:40px;height:4px;background:linear-gradient(90deg,var(--primary-500),var(--primary-700));border-radius:2px;box-shadow:0 2px 8px rgba(59,130,246,.4)}.trending-item-card{display:block;padding:var(--space-4) var(--space-6);transition:all var(--transition-base);position:relative;overflow:hidden}.trending-item-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(90deg,var(--neutral-25) 0,var(--neutral-50) 100%);opacity:0;transition:opacity var(--transition-base)}.trending-item-card:hover:before{opacity:1}.trending-item-card:hover{transform:translateX(4px)}.line-clamp-1{-webkit-line-clamp:1}.line-clamp-1,.line-clamp-2{display:-webkit-box;-webkit-box-orient:vertical;overflow:hidden}.line-clamp-2{-webkit-line-clamp:2}@media (prefers-color-scheme:dark){:root{--neutral-0:#0f172a;--neutral-25:#1e293b;--neutral-50:#334155;--neutral-100:#475569;--neutral-200:#64748b;--neutral-300:#94a3b8;--neutral-400:#cbd5e1;--neutral-500:#e2e8f0;--neutral-600:#f1f5f9;--neutral-700:#f8fafc;--neutral-800:#fcfcfd;--neutral-900:#fff}.trending-enterprise-container{border-color:var(--neutral-700)}.heat-progress-bar{background:var(--neutral-700)}.rank-badge-cool{background:linear-gradient(135deg,var(--neutral-700) 0,var(--neutral-600) 100%);color:var(--neutral-300)}}@media (max-width:768px){.tab-enterprise-enhanced{padding:20px 24px;font-size:15px;min-height:56px;min-width:56px;margin:3px;border-radius:10px;font-weight:600}.trending-item-card{padding:var(--space-3) var(--space-4)}.rank-badge{width:36px;height:36px;font-size:var(--text-xs)}.trending-item-card:hover{transform:none}.trending-item-card:hover:before{opacity:.5}}@media (min-width:769px) and (max-width:1024px){.tab-enterprise-enhanced{padding:24px 32px;min-height:64px;font-size:16px;font-weight:600}}.tab-container{display:flex;overflow-x:auto;overflow-y:hidden;scrollbar-width:none;-ms-overflow-style:none;scroll-behavior:smooth;padding:8px 12px;position:relative;background:linear-gradient(to right,var(--neutral-25),var(--neutral-50));border-top:1px solid var(--neutral-200);min-height:88px;align-items:center}.tab-container::-webkit-scrollbar{display:none}.tab-enterprise-enhanced+.tab-enterprise-enhanced{margin-left:8px}@media (max-width:768px){.tab-enterprise-enhanced+.tab-enterprise-enhanced{margin-left:4px}}@media (prefers-reduced-motion:reduce){.heat-progress-fill:after{animation:none}.rank-badge,.tab-enterprise-enhanced,.trending-item-card{transition:none}.trending-item-card:hover{transform:none}}.chinese-text{font-family:Noto Sans SC,PingFang SC,Microsoft YaHei,Noto Sans CJK SC,SimSun,sans-serif;letter-spacing:.02em;line-height:1.75;font-weight:400;text-rendering:optimizeLegibility}.chinese-text h1,.chinese-text h2,.chinese-text h3,.chinese-text h4,.chinese-text h5,.chinese-text h6{font-weight:500;letter-spacing:.01em}.scrollbar-hide{-ms-overflow-style:none;scrollbar-width:none}.scrollbar-hide::-webkit-scrollbar{display:none}.heat-indicator-hot{background:linear-gradient(90deg,var(--error-500),var(--error-600));animation:pulse-heat 2s ease-in-out infinite}.heat-indicator-warm{background:linear-gradient(90deg,var(--warning-500),var(--warning-600))}.heat-indicator-cool{background:linear-gradient(90deg,var(--neutral-300),var(--neutral-400))}@keyframes pulse-heat{0%,to{opacity:1}50%{opacity:.8}}.tab-dynamic-color{position:relative;overflow:hidden}.tab-dynamic-color:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;opacity:0;transition:opacity var(--transition-base)}.tab-dynamic-color.active:before{opacity:.1}.rank-badge{position:relative;overflow:hidden}.rank-badge-hot{animation:rank-glow 3s ease-in-out infinite}@keyframes rank-glow{0%,to{box-shadow:0 4px 12px rgba(239,68,68,.3)}50%{box-shadow:0 6px 20px rgba(239,68,68,.5)}}@media (max-width:768px){.trending-item-card{min-height:44px;padding:var(--space-4);cursor:pointer;-webkit-tap-highlight-color:rgba(59,130,246,.1)}.tab-enterprise-enhanced{min-height:44px;min-width:44px;padding:var(--space-3) var(--space-4)}.rank-badge{width:36px;height:36px;font-size:var(--text-xs);border-radius:10px}.trending-item-card:hover{transform:none}.rank-badge-hot{animation:none}}@media (prefers-contrast:high){.rank-badge{border:2px solid;font-weight:700}.heat-progress-bar{border:1px solid var(--neutral-600);background:var(--neutral-100)}.trending-enterprise-container{border-width:2px;border-color:var(--neutral-800)}.tab-enterprise-enhanced{border:1px solid var(--neutral-300)}.tab-enterprise-enhanced-active{border-color:var(--primary-600);background:var(--primary-100)}}.trending-item-card:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:8px;background:var(--primary-25)}.tab-enterprise-enhanced:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-radius:6px;background:var(--primary-50)}.heat-level-extreme{background:linear-gradient(90deg,#dc2626,#ef4444)}.heat-level-high{background:linear-gradient(90deg,#ea580c,#f97316)}.heat-level-medium{background:linear-gradient(90deg,#ca8a04,#eab308)}.heat-level-low{background:linear-gradient(90deg,var(--neutral-400),var(--neutral-500))}.trending-loading-container{padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-4)}.trending-loading-item{display:flex;align-items:center;gap:var(--space-4);padding:var(--space-4)}.trending-loading-item .skeleton-rank{width:40px;height:40px;border-radius:12px}.trending-loading-item .skeleton-content{flex:1;display:flex;flex-direction:column;gap:var(--space-2)}.trending-loading-item .skeleton-title{height:16px;width:75%;border-radius:4px}.trending-loading-item .skeleton-heat{height:12px;width:100%;border-radius:6px}.trending-loading-item .skeleton-value{width:64px;height:24px;border-radius:12px}.trending-empty-state{padding:var(--space-12);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--space-4)}.trending-empty-state .empty-icon{font-size:4rem;opacity:.5;margin-bottom:var(--space-2)}.trending-empty-state .empty-title{font-size:var(--text-lg);font-weight:600;color:var(--neutral-600);margin-bottom:var(--space-1)}.trending-empty-state .empty-description{font-size:var(--text-sm);color:var(--neutral-500);max-width:300px}:root{--lang-chinese:#ef4444;--lang-english:#3b82f6;--lang-japanese:#ec4899;--lang-korean:#8b5cf6;--lang-spanish:#f59e0b;--lang-french:#6366f1;--lang-german:#059669;--lang-arabic:#dc2626;--lang-russian:#7c3aed;--translation-success:#10b981;--translation-pending:#f59e0b;--translation-error:#ef4444;--translation-loading:#6b7280;--quality-high:#059669;--quality-medium:#d97706;--quality-low:#dc2626;--selector-bg:hsla(0,0%,100%,.95);--selector-border:rgba(0,0,0,.08);--selector-shadow:0 4px 20px rgba(0,0,0,.08);--selector-hover:rgba(59,130,246,.04);--selector-active:rgba(59,130,246,.1);--transition-instant:100ms cubic-bezier(0.4,0,0.2,1);--transition-fast:150ms cubic-bezier(0.4,0,0.2,1);--transition-normal:200ms cubic-bezier(0.4,0,0.2,1);--transition-slow:300ms cubic-bezier(0.4,0,0.2,1)}.language-selector{position:relative;font-family:var(--font-sans)}.language-selector-trigger{position:relative;display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);background:var(--selector-bg);border:1px solid var(--selector-border);border-radius:12px;box-shadow:var(--shadow-xs);transition:all var(--transition-fast);cursor:pointer;-webkit-user-select:none;-moz-user-select:none;user-select:none;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}.language-selector-trigger:hover{border-color:var(--primary-300);box-shadow:var(--shadow-sm);background:var(--selector-hover)}.language-selector-trigger:focus-visible{outline:2px solid var(--primary-500);outline-offset:2px;border-color:var(--primary-500)}.language-selector-trigger:disabled{opacity:.6;cursor:not-allowed;pointer-events:none}.language-selector-trigger[aria-expanded=true]{border-color:var(--primary-500);box-shadow:0 0 0 3px rgba(59,130,246,.1);background:var(--selector-active)}.language-flag{font-size:1.25rem;line-height:1;width:20px;height:15px;display:flex;align-items:center;justify-content:center;border-radius:2px;overflow:hidden}.language-name{font-weight:500;color:var(--neutral-900);letter-spacing:-.01em}.language-native-name{font-size:var(--text-xs);color:var(--neutral-500);font-weight:400}.language-selector-chevron{transition:transform var(--transition-fast);color:var(--neutral-400)}.language-selector-chevron.open{transform:rotate(180deg)}.language-selector-spinner{width:16px;height:16px;border:2px solid var(--primary-200);border-top-color:var(--primary-600);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(1turn)}}.language-selector-dropdown{position:absolute;top:calc(100% + 8px);left:0;right:0;min-width:320px;background:#fff;border:1px solid var(--selector-border);border-radius:16px;box-shadow:var(--selector-shadow);z-index:50;overflow:hidden;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.language-selector-dropdown.animate-in{animation:dropdown-enter var(--transition-normal)}@keyframes dropdown-enter{0%{opacity:0;transform:translateY(-8px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.language-search-input{width:100%;padding:var(--space-3);border:none;border-bottom:1px solid var(--neutral-200);background:transparent;font-size:var(--text-sm);outline:none;color:var(--neutral-900)}.language-search-input::-moz-placeholder{color:var(--neutral-400)}.language-search-input::placeholder{color:var(--neutral-400)}.language-search-input:focus{background:var(--neutral-25)}.language-options-container{max-height:240px;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--neutral-300) transparent}.language-options-container::-webkit-scrollbar{width:6px}.language-options-container::-webkit-scrollbar-track{background:transparent}.language-options-container::-webkit-scrollbar-thumb{background:var(--neutral-300);border-radius:3px}.language-option{display:flex;align-items:center;justify-content:space-between;padding:var(--space-3) var(--space-4);border:none;background:transparent;width:100%;text-align:left;cursor:pointer;transition:all var(--transition-fast);color:var(--neutral-700)}.language-option:hover{background:var(--neutral-50);color:var(--neutral-900)}.language-option:focus-visible{outline:none;background:var(--primary-50);color:var(--primary-700)}.language-option[aria-selected=true]{background:var(--primary-50);color:var(--primary-700);font-weight:500}.language-option-content{display:flex;align-items:center;gap:var(--space-3);min-width:0}.language-option-details{min-width:0}.language-option-region{font-size:var(--text-xs);color:var(--neutral-400);margin-top:2px}.language-status{display:flex;align-items:center;gap:var(--space-1);font-size:var(--text-xs);font-weight:500}.language-status.ready{color:var(--translation-success)}.language-status.partial{color:var(--translation-pending)}.language-status.unavailable{color:var(--translation-loading)}.language-status-indicator{width:6px;height:6px;border-radius:50%;background:currentColor}.multilingual-trends{background:#fff;border:1px solid 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var(--transition-fast)}.display-mode-button:hover{color:var(--neutral-900);background:hsla(0,0%,100%,.5)}.display-mode-button.active{background:#fff;color:var(--neutral-900);box-shadow:var(--shadow-xs)}.trend-item{display:flex;align-items:flex-start;gap:var(--space-4);padding:var(--space-4) var(--space-6);border-bottom:1px solid var(--neutral-100);transition:all var(--transition-fast);cursor:pointer;position:relative}.trend-item:last-child{border-bottom:none}.trend-item:hover{background:var(--neutral-25);transform:translateX(2px)}.trend-item:focus-visible{outline:2px solid var(--primary-500);outline-offset:-2px;background:var(--primary-25)}.trend-rank{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;font-weight:700;font-size:var(--text-sm);flex-shrink:0;position:relative;overflow:hidden}.trend-rank.top-3{background:linear-gradient(135deg,#ef4444,#f97316);color:#fff;box-shadow:0 4px 12px 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