:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media (prefers-color-scheme: light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}.cityFilterContainer{background:var(--surface);border-radius:var(--radius-lg);padding:5px 0 0;border:1px solid var(--border);box-shadow:var(--shadow);flex:1;display:flex;flex-direction:column;height:100%;min-height:0}.selectedCities{margin-bottom:32px;padding-bottom:24px;border-bottom:1px solid var(--border-light)}.sectionHeader{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.sectionHeader h3{margin:0;font-size:18px;font-weight:600;color:var(--text-primary)}.clearButton{padding:8px 16px;background:var(--error);color:#fff;border:none;border-radius:var(--radius);font-size:14px;font-weight:500;cursor:pointer;transition:background-color .2s}.clearButton:hover{background:#dc2626}.selectedCityList{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px}.selectedCityItem{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;transition:all .2s ease;color:var(--text-primary);cursor:pointer;width:auto;max-width:520px}.selectedCityItem:hover{border-color:var(--border);box-shadow:none}.selectedCityItem.highlighted{border-color:var(--border);background:var(--surface);box-shadow:none}.cityHeader{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}.cityInfo{display:flex;align-items:center;gap:8px}.cityNameEn{color:var(--text-secondary);font-size:13px}.cityTimeInfo{margin-bottom:12px}.mainTimeDisplay{display:flex;align-items:center;gap:8px;margin-bottom:6px}.timeText{font-size:18px;font-weight:600;font-family:JetBrains Mono,Fira Code,Courier New,monospace;color:var(--text-primary)}.dateDisplay{margin-left:24px}.timeMeta{display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border-light);padding-top:8px;font-size:14px;color:#000}.countryInfo{color:#000}.timeDiffInfo{display:flex;align-items:center;gap:6px}.removeButton{background:var(--error);border:none;color:#fff;font-size:1.25rem;line-height:1;cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:background-color .2s;flex-shrink:0}.removeButton:hover{background:#dc2626}.filterSection{margin-bottom:.2rem;position:sticky;top:0;z-index:1;background:var(--surface);padding-top:8px}.searchContainer{position:relative;margin-bottom:16px;display:flex;align-items:center}.searchInputWrapper{position:relative;flex:1 1 auto}.searchIcon{position:absolute;left:16px;top:50%;transform:translateY(-50%);color:var(--text-secondary)}.searchInput{width:100%;padding:12px 44px 12px 48px;border:1px solid var(--border);border-radius:var(--radius);font-size:16px;background:var(--surface);color:var(--text-primary);transition:border-color .2s,box-shadow .2s}.clearBtn{position:absolute;right:12px;top:50%;transform:translateY(-50%);width:28px;height:28px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);border-radius:6px;cursor:pointer}.clearBtn:hover{color:var(--text-primary)}.closeBtn{margin-left:8px;height:42px;min-width:42px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--border);background:var(--surface);color:var(--text-secondary);border-radius:var(--radius);cursor:pointer}.closeBtn:hover{color:var(--text-primary)}.searchInput:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #3b82f61a}.searchInput::placeholder{color:var(--text-secondary)}.regionFilter{display:flex;flex-wrap:wrap;gap:8px}.regionButton{display:flex;align-items:center;gap:8px;padding:4px 6px;border:1px solid color-mix(in oklab,var(--accent, var(--primary)) 25%,var(--border));border-radius:var(--radius);background:var(--surface);color:color-mix(in oklab,var(--accent-dark, var(--primary-dark)) 35%,var(--text-secondary));font-size:14px;cursor:pointer;transition:all .2s;position:relative}.regionButton:before{content:"";display:inline-block;width:10px;height:10px;border-radius:999px;background:var(--accent, var(--primary))}.regionButton:hover{border-color:var(--accent, var(--primary));color:var(--accent-dark, var(--primary))}.regionButton.active{background:var(--accent, var(--primary));border-color:var(--accent, var(--primary));color:#fff}.regionButton.softActive:not(.active){background:color-mix(in oklab,var(--accent, var(--primary)) 10%,var(--surface));border-color:color-mix(in oklab,var(--accent, var(--primary)) 40%,var(--border-light));color:color-mix(in oklab,var(--accent-dark, var(--primary-dark)) 40%,var(--text-secondary));box-shadow:0 0 0 1px #94a3b84d}.cityList{flex:1;min-height:0;overflow-y:auto;border:1px solid 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768px){.container{padding:16px}.cityGrid{grid-template-columns:1fr}.selectedCityItem{min-width:auto;flex:1}.regionFilter{justify-content:center}.sectionHeader{flex-direction:column;align-items:flex-start;gap:.5rem}.clearButton{align-self:flex-end}}.timeDisplayContainer{background:var(--surface);border-radius:var(--radius-lg);padding:16px;border:1px solid var(--border);box-shadow:var(--shadow);flex:2}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;padding-bottom:16px;border-bottom:1px solid var(--border-light)}.headerInfo{display:flex;align-items:center;gap:8px;font-size:18px;font-weight:600;color:var(--text-primary)}.referenceTime{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-secondary);background:var(--border-light);padding:8px 16px;border-radius:var(--radius)}.emptyState{text-align:center;padding:48px 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