:root{--color-bg: #f5f5f5;--color-surface: #fff;--color-text: #1a1a1a;--color-text-secondary: #444;--color-muted: #666;--color-primary: #2563eb;--color-primary-hover: #1d4ed8;--color-success: #16a34a;--color-danger: #991b1b;--color-border: #ddd;--color-hover: #f0f0f0;--color-unread-bg: #f0f5ff;--radius-sm: 6px;--radius-md: 12px;--radius-lg: 16px;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06), 0 1px 2px rgba(0, 0, 0, .04);--shadow-md: 0 4px 6px rgba(0, 0, 0, .05), 0 2px 4px rgba(0, 0, 0, .03);--shadow-lg: 0 10px 25px rgba(0, 0, 0, .08), 0 4px 10px rgba(0, 0, 0, .05);--font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--transition: .15s ease;--focus-ring: 0 0 0 2px var(--color-surface), 0 0 0 4px var(--color-primary)}@media(prefers-color-scheme:dark){:root{--color-bg: #121212;--color-surface: #1e1e1e;--color-text: #e4e4e4;--color-text-secondary: #bbb;--color-muted: #888;--color-primary: #3b82f6;--color-primary-hover: #60a5fa;--color-success: #22c55e;--color-danger: #f87171;--color-border: #333;--color-hover: #2a2a2a;--color-unread-bg: #1a2332;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow-md: 0 1px 4px rgba(0, 0, 0, .4);--shadow-lg: 0 4px 16px rgba(0, 0, 0, .5)}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font);background:var(--color-bg);color:var(--color-text);line-height:1.6}:focus-visible{outline:none;box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}.progress-bar{position:fixed;top:0;left:0;height:3px;background:linear-gradient(90deg,var(--color-primary),#8b5cf6);z-index:9999;transition:width .1s linear;pointer-events:none}.app{max-width:1200px;margin:0 auto;padding:24px 20px}.skip-link{position:absolute;top:-100%;left:8px;padding:8px 16px;background:var(--color-primary);color:#fff;border-radius:var(--radius-sm);z-index:9999;font-size:14px;text-decoration:none}.skip-link:focus{top:8px}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:24px;gap:12px;flex-wrap:wrap}.header h1{font-size:22px;font-weight:700;line-height:1.3}.header-right{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.last-updated{font-size:12px;color:var(--color-muted);white-space:nowrap}.header-posts-label{display:flex;align-items:center;gap:4px;font-size:12px;color:var(--color-muted);white-space:nowrap}.header-posts-input{width:50px;padding:6px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:13px;text-align:center;background:var(--color-surface);color:var(--color-text)}.header-posts-input:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 1px var(--color-primary)}.feed-icon{width:16px;height:16px;border-radius:3px;flex-shrink:0}.feed-name-row{display:flex;align-items:center;gap:6px}.refresh-btn{padding:8px 18px;background:var(--color-text);color:var(--color-surface);border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500;transition:opacity var(--transition),transform var(--transition);min-height:36px}.refresh-btn:active{transform:scale(.97)}.refresh-btn:disabled{opacity:.5;cursor:not-allowed}.feed-list{background:var(--color-surface);border-radius:var(--radius-md);padding:16px;margin-bottom:24px;box-shadow:var(--shadow-sm)}.feed-list h2{font-size:16px;font-weight:600}.feed-list-header{display:flex;justify-content:space-between;align-items:center;cursor:pointer;-webkit-user-select:none;user-select:none;padding:4px 0}.feed-list-header:focus-visible{box-shadow:var(--focus-ring);border-radius:var(--radius-sm)}.feed-list-toggle{font-size:14px;color:var(--color-muted)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 16px;color:var(--color-muted);gap:8px}.empty-state-icon{font-size:36px;opacity:.4}.empty-state-text{font-size:14px;font-style:italic;margin-bottom:4px}.feed-items{display:flex;flex-direction:column;gap:8px;margin:12px 0}.feed-item{display:flex;justify-content:space-between;align-items:center;padding:10px 12px;background:var(--color-bg);border-radius:var(--radius-sm);position:relative;min-height:44px}.feed-item.dragging{background:var(--color-unread-bg)}.feed-item.drag-overlay{background:var(--color-surface);box-shadow:var(--shadow-lg);border-radius:var(--radius-sm);padding:10px 12px;opacity:.95;cursor:grabbing}.drag-handle{background:none;border:none;cursor:grab;color:var(--color-muted);font-size:18px;padding:6px 8px 6px 4px;line-height:1;flex-shrink:0;transition:color var(--transition);touch-action:none;min-height:36px;min-width:32px;display:flex;align-items:center;justify-content:center}.drag-handle:hover{color:var(--color-text)}.drag-handle:active{cursor:grabbing}.feed-info{display:flex;flex-direction:column;gap:2px;overflow:hidden;flex:1;min-width:0}.feed-name{font-weight:600;font-size:14px}.feed-name-btn{background:none;border:none;font-weight:600;font-size:12px;letter-spacing:.05em;text-transform:uppercase;color:var(--color-text-secondary);cursor:pointer;text-align:left;padding:0;transition:color var(--transition);font-family:inherit}.feed-name-btn:hover{color:var(--color-primary)}.feed-url{font-size:12px;color:var(--color-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.feed-actions{display:flex;gap:6px;flex-shrink:0}.edit-btn{background:none;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:4px 10px;cursor:pointer;font-size:12px;color:var(--color-text-secondary);transition:background var(--transition);font-family:inherit;min-height:30px}.edit-btn:hover{background:var(--color-hover)}.remove-btn{background:none;border:1px solid var(--color-border);border-radius:var(--radius-sm);padding:4px 10px;cursor:pointer;font-size:14px;color:var(--color-muted);flex-shrink:0;transition:color var(--transition),border-color var(--transition);min-height:30px}.remove-btn:hover{color:var(--color-danger);border-color:var(--color-danger)}.remove-btn:disabled{opacity:.5}.feed-edit{display:flex;gap:8px;align-items:center;width:100%;flex-wrap:wrap}.edit-input{flex:1;min-width:120px;padding:6px 8px;border:1px solid var(--color-primary);border-radius:var(--radius-sm);font-size:13px;outline:none;background:var(--color-surface);color:var(--color-text)}.edit-input:focus{box-shadow:0 0 0 1px var(--color-primary)}.edit-actions{display:flex;gap:6px}.save-btn{padding:6px 16px;background:var(--color-primary);color:var(--color-surface);border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500;transition:opacity var(--transition),transform var(--transition);font-family:inherit;min-height:32px}.save-btn:active{transform:scale(.97)}.save-btn:disabled{opacity:.6;cursor:not-allowed}.cancel-btn{padding:6px 12px;background:var(--color-surface);color:var(--color-text-secondary);border:1px solid var(--color-border);border-radius:var(--radius-sm);cursor:pointer;font-size:13px;transition:background var(--transition);font-family:inherit;min-height:32px}.cancel-btn:hover{background:var(--color-hover)}.add-feed{display:flex;gap:8px}.add-feed input{flex:1;padding:8px 10px;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:14px;transition:border-color var(--transition);background:var(--color-surface);color:var(--color-text);min-height:38px}.add-feed input:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 1px var(--color-primary)}.add-btn{padding:8px 18px;background:var(--color-primary);color:var(--color-surface);border:none;border-radius:var(--radius-sm);cursor:pointer;font-size:13px;font-weight:500;white-space:nowrap;transition:opacity var(--transition),transform var(--transition);font-family:inherit;min-height:38px}.add-btn:active{transform:scale(.97)}.add-btn:hover{background:var(--color-primary-hover)}.add-btn:disabled{opacity:.6;cursor:not-allowed}.feed-help{margin-top:8px;font-size:12px;color:var(--color-muted);text-align:center}.feed-help code{background:var(--color-hover);padding:1px 4px;border-radius:3px;font-size:11px}.results{margin-bottom:16px}.feed-card{background:var(--color-surface);border-radius:var(--radius-md);padding:20px;margin-bottom:12px;box-shadow:var(--shadow-sm);animation:fadeIn .3s ease-out;position:relative;overflow:hidden;transition:transform var(--transition),box-shadow var(--transition)}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}.feed-card-header{font-size:16px;margin-bottom:12px;color:var(--color-text);border-bottom:1px solid var(--color-border);padding-bottom:8px;display:flex;align-items:center;gap:8px}.feed-card-icon{width:16px;height:16px;border-radius:3px;flex-shrink:0}.feed-card-title{font-weight:600;font-size:15px;letter-spacing:.02em;color:var(--color-text)}.feed-card-count{font-size:12px;color:var(--color-muted);font-weight:400;margin-left:auto}.feed-error{color:var(--color-danger);font-size:14px}.feed-empty{color:var(--color-muted);font-size:14px;font-style:italic}.post-list{list-style:none;display:flex;flex-direction:column;gap:6px;padding:0;margin:0}.post-item{display:flex;flex-direction:row;gap:12px;padding:12px;border-radius:var(--radius-sm);overflow:hidden;transition:background var(--transition)}.post-item:hover{background:var(--color-hover)}.post-thumb{width:72px;height:72px;object-fit:cover;border-radius:var(--radius-sm)}.post-title{font-size:16px;font-weight:500;color:var(--color-text);text-decoration:none;line-height:1.4;display:block}.post-title:hover{text-decoration:underline;color:var(--color-primary)}.post-snippet{font-size:14px;color:var(--color-text-secondary);margin-top:4px;line-height:1.5}.post-meta{display:flex;gap:8px;font-size:12px;color:var(--color-muted);margin-top:2px;flex-wrap:wrap}.post-meta-sep{color:var(--color-border)}.footer{text-align:center;color:var(--color-muted);font-size:13px;padding:16px}.skeleton-card{background:var(--color-surface);border-radius:var(--radius-md);padding:16px;margin-bottom:12px;box-shadow:var(--shadow-sm)}.skeleton-line{height:14px;border-radius:var(--radius-sm);background:linear-gradient(90deg,var(--color-border) 25%,var(--color-hover) 50%,var(--color-border) 75%);background-size:200% 100%;animation:shimmer 1.5s ease-in-out infinite;margin-bottom:10px}.skeleton-line-title{height:18px;width:40%;margin-bottom:14px}.skeleton-line-text{width:100%}.skeleton-line-short{width:65%}.skeleton-line-meta{width:30%;height:12px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.toast-container{position:fixed;bottom:24px;right:24px;display:flex;flex-direction:column;gap:8px;z-index:1000;pointer-events:none;max-width:380px}.toast{padding:10px 16px;border-radius:var(--radius-sm);font-size:13px;color:var(--color-surface);box-shadow:var(--shadow-lg);animation:toastIn .25s ease-out;pointer-events:auto;cursor:pointer;display:flex;align-items:center;gap:8px;line-height:1.4}.toast:hover{opacity:.9}.toast-success{background:var(--color-success)}.toast-error{background:var(--color-danger)}.toast-dismiss{font-size:16px;opacity:.7;flex-shrink:0;margin-left:auto;padding:0 2px}@keyframes toastIn{0%{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.init-error{padding:40px 16px;text-align:center;color:var(--color-muted);font-size:14px}.retry-btn{margin-top:12px;padding:10px 24px;border:none;border-radius:var(--radius-md);background:var(--color-primary);color:#fff;font-size:14px;cursor:pointer;font-family:inherit;font-weight:500}.retry-btn:hover{background:var(--color-primary-hover)}.retry-btn:active{transform:scale(.97)}.back-to-top{position:fixed;bottom:80px;right:24px;width:44px;height:44px;border-radius:50%;border:none;background:var(--color-text);color:var(--color-surface);font-size:18px;cursor:pointer;box-shadow:var(--shadow-md);animation:toastIn .25s ease-out;transition:transform var(--transition),opacity var(--transition);z-index:999;display:flex;align-items:center;justify-content:center}.back-to-top:hover{transform:scale(1.1)}@media(max-width:600px){.app{padding:16px 12px}.header{gap:8px;margin-bottom:16px}.header h1{font-size:20px}.header-right{gap:6px}.add-feed{flex-direction:column}.add-feed input{flex:unset}.add-btn{width:100%}.feed-item{padding:8px 10px}.feed-edit{flex-direction:column;align-items:stretch}.edit-input{min-width:unset}.feed-card{padding:12px}.toast-container{bottom:16px;right:16px;left:16px;max-width:unset}}@media(max-width:400px){.header h1{font-size:18px;width:100%}.header-right{width:100%;justify-content:flex-end}.last-updated{display:none}.drag-handle{padding:6px 6px 6px 2px;min-width:28px}.back-to-top{bottom:64px;right:16px;width:40px;height:40px}}