:root{--font-family-ja: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic", YuGothic, Meiryo, "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--primary-color: #002e46;--primary-light: #004d73;--secondary-color: #ff6b9d;--background-color: #f5f5f5;--card-background: #ffffff;--text-color: #333333;--text-light: #666666;--border-color: #e0e0e0;--success-color: #4caf50;--warning-color: #ff9800;--error-color: #f44336}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family-ja);background-color:var(--background-color);color:var(--text-color);line-height:1.6;min-height:100%;-webkit-text-size-adjust:100%}.app{min-height:100vh;min-height:100dvh;display:flex;flex-direction:column}.main-content{flex:1;padding:20px max(20px,env(safe-area-inset-right)) max(20px,env(safe-area-inset-bottom)) max(20px,env(safe-area-inset-left));width:100%}.header{background:linear-gradient(135deg,var(--primary-color),var(--primary-light));color:#fff;padding:max(20px,env(safe-area-inset-top)) max(20px,env(safe-area-inset-right)) 20px max(20px,env(safe-area-inset-left));box-shadow:0 2px 8px #00000026}.header-main h1{font-size:1.5rem;font-weight:600}.header-main p{opacity:.9;font-size:.9rem;margin-top:4px}.header-description{max-width:900px;margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.2)}.header-description summary{cursor:pointer;font-weight:600;min-height:44px;display:flex;align-items:center;touch-action:manipulation}.header-description-content{padding-top:8px}.header-description p{opacity:.95;font-size:.9rem;line-height:1.7;margin-bottom:10px}.header-tips{margin-top:16px;padding:12px 16px;background:#ffffff1a;border-radius:8px}.header-twitter{margin-top:12px;padding:10px 14px;background:#ffffff14;border-radius:8px;display:inline-block}.header-twitter p{margin:6px 0;color:#fffffff2;font-size:.95rem;line-height:1.4}.header-twitter .twitter-handle{display:inline-block;margin-top:4px;padding:4px 8px;background:#ffffff1f;border-radius:6px;color:#fff;font-weight:700;letter-spacing:.02em}.header-tips .tip-label{font-weight:600;font-size:.95rem;display:block;margin-bottom:8px}.header-tips ul{list-style:none;padding:0;margin:0}.header-tips li{font-size:.85rem;line-height:1.6;padding-left:16px;position:relative;margin-bottom:4px;opacity:.95}.header-tips li:before{content:"•";position:absolute;left:0;color:var(--secondary-color)}.header-tips li strong{color:#ffcc80}.card{background:var(--card-background);border-radius:12px;padding:24px;box-shadow:0 2px 8px #00000014;margin-bottom:20px}.card-title{font-size:1.25rem;font-weight:600;margin-bottom:16px;color:var(--primary-color)}.welcome{max-width:800px;margin:40px auto;text-align:center}.welcome-title{font-size:2rem;margin-bottom:16px;color:var(--primary-color)}.welcome-description{color:var(--text-light);margin-bottom:32px;line-height:1.8}.feature-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin:24px 0;text-align:left}.feature-item{padding:16px;background:var(--background-color);border-radius:8px}.feature-item h4{color:var(--primary-color);margin-bottom:8px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;border:none;border-radius:8px;font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease;min-height:44px;touch-action:manipulation;-webkit-tap-highlight-color:transparent}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:var(--primary-color);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-light)}.btn-secondary{background:transparent;color:var(--primary-color);border:2px solid var(--primary-color)}.btn-secondary:hover:not(:disabled){background:var(--primary-color);color:#fff}.btn-sm{padding:8px 16px;font-size:.875rem}.data-status{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:16px;margin-bottom:20px}.status-info{display:flex;align-items:center;gap:12px}.status-indicator{width:12px;height:12px;border-radius:50%;background:var(--success-color)}.status-indicator.updating{background:var(--warning-color);animation:pulse 1s infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.status-actions{display:flex;gap:8px}.progress-container{margin:20px 0}.progress-bar{height:8px;background:var(--border-color);border-radius:4px;overflow:hidden}.progress-fill{height:100%;background:linear-gradient(90deg,var(--primary-color),var(--secondary-color));transition:width .3s ease}.progress-text{display:flex;justify-content:space-between;margin-top:8px;font-size:.875rem;color:var(--text-light)}.dashboard{display:grid;gap:20px}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}.stat-card{background:var(--card-background);border-radius:12px;padding:20px;text-align:center;box-shadow:0 2px 8px #00000014}.stat-value{font-size:2rem;font-weight:700;color:var(--primary-color)}.stat-label{color:var(--text-light);font-size:.875rem;margin-top:4px}.chart-container{background:var(--card-background);border-radius:12px;padding:20px;box-shadow:0 2px 8px #00000014}.platform-tabs{display:inline-flex;gap:4px;margin-bottom:16px;padding:4px;border:1px solid var(--border-color);border-radius:12px;background:var(--card-background)}.platform-tab{min-height:44px;padding:8px 24px;border:0;border-radius:8px;background:transparent;color:var(--text-light);font:inherit;font-weight:700;cursor:pointer;touch-action:manipulation}.platform-tab.active{background:var(--primary-color);color:#fff}.platform-tab:focus-visible{outline:3px solid color-mix(in srgb,var(--primary-light),transparent 45%);outline-offset:2px}.instagram-chart-note{margin:4px 0 0}.chart-loading-overlay{position:absolute;inset:0;z-index:10;background:#ffffffd9}.chart-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px;flex-wrap:wrap;gap:12px}.chart-title{font-size:1.125rem;font-weight:600;color:var(--primary-color)}.chart-note{margin:-4px 0 12px;color:var(--text-light);font-size:.875rem}.chart-controls{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}.metric-tabs{display:inline-flex;gap:4px;padding:4px;border-radius:10px;background:var(--background-color)}.metric-tab{min-height:44px;padding:8px 16px;border:0;border-radius:7px;color:var(--text-light);background:transparent;font:inherit;font-weight:600;cursor:pointer;touch-action:manipulation}.metric-tab.active{color:#fff;background:var(--primary-color)}.metric-tab:focus-visible{outline:3px solid color-mix(in srgb,var(--primary-light),transparent 45%);outline-offset:2px}.alignment-toggle{min-height:44px;padding:8px 16px;border:2px solid var(--primary-color);border-radius:9px;color:var(--primary-color);background:#fff;font:inherit;font-weight:600;cursor:pointer;touch-action:manipulation}.alignment-toggle:before{content:"○";margin-right:8px}.alignment-toggle.active{color:#fff;background:var(--primary-color)}.alignment-toggle.active:before{content:"✓"}.alignment-toggle:focus-visible{outline:3px solid color-mix(in srgb,var(--primary-light),transparent 45%);outline-offset:2px}.smoothing-control{display:flex;align-items:center;gap:8px;min-height:44px;padding:4px 10px;border:1px solid var(--border-color);border-radius:9px;background:#fff;font-weight:600}.smoothing-slider{width:clamp(120px,20vw,220px);min-height:36px;accent-color:var(--primary-color)}.smoothing-number{width:64px;min-height:36px;padding:4px 6px;border:1px solid var(--border-color);border-radius:6px;font:inherit;text-align:right}.smoothing-slider:focus-visible,.smoothing-number:focus-visible{outline:3px solid color-mix(in srgb,var(--primary-light),transparent 45%);outline-offset:2px}.filters{display:flex;gap:12px;flex-wrap:wrap}.filter-select{padding:8px 12px;border:1px solid var(--border-color);border-radius:6px;font-size:.875rem;background:#fff;cursor:pointer;min-height:44px;max-width:100%}.filter-select:focus{outline:none;border-color:var(--primary-color)}.chart-body{position:relative}.view-count-chart{width:100%;height:calc(100vh - 250px);height:calc(100dvh - 250px);min-height:500px}.loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px;color:var(--text-light)}.spinner{width:40px;height:40px;border:3px solid var(--border-color);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite;margin-bottom:16px}@keyframes spin{to{transform:rotate(360deg)}}.error-message{background:#ffebee;color:var(--error-color);padding:16px;border-radius:8px;margin:16px 0}.data-table{width:100%;border-collapse:collapse;font-size:.875rem}.data-table th,.data-table td{padding:12px;text-align:left;border-bottom:1px solid var(--border-color)}.data-table th{background:var(--background-color);font-weight:600;color:var(--primary-color)}.data-table tr:hover{background:var(--background-color)}@media (max-width: 768px){.header-main h1{font-size:1.25rem}.header-description{margin-top:16px;padding-top:12px}.header-tips li{font-size:.8rem}.welcome-title{font-size:1.5rem}.main-content{padding:16px max(16px,env(safe-area-inset-right)) max(16px,env(safe-area-inset-bottom)) max(16px,env(safe-area-inset-left))}.data-status{flex-direction:column;align-items:flex-start}.status-actions{width:100%}.status-actions .btn{flex:1}.chart-container{padding:12px}.metric-tabs{display:flex;overflow-x:auto;width:100%}.metric-tab{flex:1;padding-inline:10px}.alignment-toggle,.smoothing-control{width:100%}.smoothing-slider{flex:1;width:auto}.view-count-chart{height:62vh;height:62dvh;min-height:360px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}