:root{font-family:SF Pro Display,PingFang SC,Hiragino Sans GB,sans-serif;line-height:1.5;font-weight:400;color:#172033;background:radial-gradient(circle at top,rgba(230,73,45,.12),transparent 28%),radial-gradient(circle at right top,rgba(11,125,122,.12),transparent 24%),linear-gradient(180deg,#fff9f5,#f6f8fb 45%,#eef3f7);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--panel: rgba(255, 255, 255, .78);--panel-strong: rgba(255, 255, 255, .96);--border: rgba(148, 163, 184, .2);--text: #172033;--muted: #5b677d;--accent: #e6492d;--accent-strong: #b73a24;--danger: #b42318}*{box-sizing:border-box}html{min-width:320px}body{margin:0;min-width:320px;min-height:100vh;color:var(--text)}a{color:inherit;text-decoration:none}button,input,textarea,select{font:inherit}button{border:0;border-radius:999px;padding:10px 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auto;width:100%}.app-footer{background:#f5f5f5;padding:1rem;text-align:center;color:#666;font-size:.85rem}.news-feed-wrap{display:flex;flex-direction:column;gap:1rem;position:relative}.new-items-badge-container{position:sticky;top:1rem;z-index:100;display:flex;justify-content:center;pointer-events:none}.new-items-badge{background:#667eea;color:#fff;border:none;padding:.5rem 1.25rem;border-radius:9999px;font-size:.9rem;font-weight:600;box-shadow:0 4px 12px #667eea66;cursor:pointer;pointer-events:auto;animation:slide-down .3s ease-out;transition:transform .2s,background .2s}.new-items-badge:hover{background:#5568d3;transform:translateY(-1px)}.new-items-badge:active{transform:translateY(0)}@keyframes slide-down{0%{transform:translateY(-20px);opacity:0}to{transform:translateY(0);opacity:1}}.news-feed{display:flex;flex-direction:column;gap:1rem}.news-card{background:#fff;border-radius:12px;overflow:hidden;border:1px solid #e8e8e8;transition:background-color 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.2s;cursor:default}.tag-chip-clickable{cursor:pointer;-webkit-user-select:none;user-select:none}.tag-chip-clickable:hover{transform:scale(1.05)}.tag-chip-enabled{background:#667eea;color:#fff}.tag-chip-disabled{background:#f0f0f0;color:#666}.media-cover{width:100%;height:200px;overflow:hidden;background:#f0f0f0;position:relative}.media-cover img,.media-cover video{width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .5s ease-in-out}.media-cover img.loaded,.media-cover video.loaded{opacity:1}.media-cover-placeholder{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#f5f7fa,#c3cfe2);color:#a0aec0}.placeholder-icon{font-size:3rem;filter:grayscale(1);opacity:.5}.skeleton{background:#edf2f7;background:linear-gradient(90deg,#edf2f7 25%,#f7fafc 37%,#edf2f7 63%);background-size:400% 100%;animation:skeleton-loading 1.4s ease infinite;border-radius:4px}@keyframes skeleton-loading{0%{background-position:100% 50%}to{background-position:0% 50%}}.skeleton-card{height:400px;margin-bottom:1rem}.skeleton-cover{height:200px;border-radius:12px 12px 0 0}.skeleton-body{padding:1rem}.skeleton-title{height:1.5rem;width:80%;margin-bottom:1rem}.skeleton-text{height:1rem;width:100%;margin-bottom:.5rem}.skeleton-text-short{width:60%}.skeleton-meta{display:flex;justify-content:space-between;margin-top:1rem}.skeleton-source{height:1rem;width:4rem}.skeleton-time{height:1rem;width:6rem}.feed-sentinel{height:1px}.feed-status{padding:2rem;text-align:center;color:#667eea;font-weight:500}.error-text{padding:1rem;text-align:center;color:#c00}.empty-state{padding:3rem;text-align:center}.empty-state p{margin:0 0 1rem;color:#666}.empty-state button{background:#667eea;color:#fff;border:none;padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.9rem}.empty-state button:hover{background:#5568d3}@media(max-width:640px){.app-header{padding:1.5rem 1rem}.app-header h1{font-size:1.5rem}.app-main{padding:.5rem}.news-card-title{font-size:1.1rem}}.pwa-toast{position:fixed;right:16px;bottom:16px;margin:16px;padding:16px;border:1px solid #8885;border-radius:8px;z-index:1000;text-align:left;box-shadow:3px 4px 5px #8885;background-color:#fff;max-width:300px}.pwa-toast-message{margin-bottom:8px;font-size:.9rem;color:#333}.pwa-toast button{border:1px solid #8885;outline:none;margin-right:5px;border-radius:4px;padding:5px 12px;background-color:#667eea;color:#fff;cursor:pointer;font-size:.85rem;font-weight:500}.pwa-toast button:hover{background-color:#5568d3}.pwa-toast button:last-child{background-color:#f0f0f0;color:#666;border:1px solid #ccc}.pwa-toast button:last-child:hover{background-color:#e5e5e5}