:root{--font-sans: "Pretendard", "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--bg-base: #0b0f17;--bg-surface: #111726;--bg-surface-elevated: #192238;--bg-card: rgba(22, 30, 49, .75);--bg-card-hover: rgba(30, 41, 67, .9);--border-subtle: rgba(255, 255, 255, .08);--border-hover: rgba(99, 102, 241, .35);--accent: #6366f1;--accent-light: #818cf8;--accent-glow: rgba(99, 102, 241, .25);--accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);--amber: #f59e0b;--amber-glow: rgba(245, 158, 11, .2);--emerald: #10b981;--rose: #f43f5e;--text-main: #f8fafc;--text-muted: #94a3b8;--text-dimmed: #64748b;--text-inverse: #0b0f17;--glass-blur: blur(16px);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .25);--shadow-md: 0 8px 24px -4px rgba(0, 0, 0, .4);--shadow-lg: 0 16px 36px -6px rgba(0, 0, 0, .5);--radius-sm: 8px;--radius-md: 14px;--radius-lg: 20px;--radius-full: 9999px;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .25s 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2.2rem .6rem 2.4rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-full);color:var(--text-main);font-size:.9rem;transition:var(--transition-fast)}.search-box input:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow);background:var(--bg-surface-elevated)}.search-icon{position:absolute;left:.85rem;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--text-dimmed);pointer-events:none}.icon-btn-inline{position:absolute;right:.75rem;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-dimmed);cursor:pointer;font-size:.85rem}.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.58rem 1.1rem;border-radius:var(--radius-full);font-size:.88rem;font-weight:600;cursor:pointer;border:none;transition:var(--transition-fast);white-space:nowrap}.btn svg{width:16px;height:16px}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 14px 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4rem}.bento-container{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;grid-auto-flow:dense}.feed-card{position:relative;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);overflow:hidden;display:flex;flex-direction:column;transition:transform var(--transition-normal),box-shadow var(--transition-normal),border-color var(--transition-normal);cursor:pointer}.feed-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--border-hover);background:var(--bg-card-hover)}.feed-card.is-read{opacity:.65}.feed-card.is-read:hover{opacity:.9}.feed-card.card-featured{grid-column:span 2;grid-row:span 2;background:linear-gradient(180deg,rgba(30,41,67,.8) 0%,rgba(17,23,38,.9) 100%);border-color:#6366f140}.feed-card.card-wide{grid-column:span 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rgba(255,255,255,.15);display:flex;align-items:center;gap:.35rem;z-index:2}.channel-badge-dot{width:6px;height:6px;border-radius:50%}.bookmark-btn{position:absolute;top:.85rem;right:.85rem;width:34px;height:34px;border-radius:50%;background:rgba(11,15,23,.75);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);border:1px solid rgba(255,255,255,.15);color:var(--text-muted);display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:2;transition:var(--transition-fast)}.bookmark-btn:hover{color:#fff;background:rgba(11,15,23,.95);transform:scale(1.08)}.bookmark-btn.active{color:var(--amber);background:rgba(245,158,11,.2);border-color:var(--amber)}.bookmark-btn svg{width:16px;height:16px}.card-body{padding:1.25rem;display:flex;flex-direction:column;flex:1}.feed-card.card-featured .card-body{padding:1.6rem}.card-meta{display:flex;align-items:center;gap:.6rem;font-size:.76rem;color:var(--text-dimmed);margin-bottom:.6rem}.card-title{font-size:1.05rem;font-weight:700;line-height:1.4;color:var(--text-main);margin-bottom:.65rem;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.feed-card.card-featured .card-title{font-size:1.38rem;line-height:1.35;-webkit-line-clamp:3}.card-summary{font-size:.86rem;color:var(--text-muted);line-height:1.55;margin-bottom:1rem;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.feed-card.card-featured .card-summary{font-size:.95rem;-webkit-line-clamp:4}.card-footer{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding-top:.85rem;border-top:1px solid var(--border-subtle);font-size:.78rem}.read-more-link{display:inline-flex;align-items:center;gap:.3rem;color:var(--accent-light);font-weight:600;transition:var(--transition-fast)}.feed-card:hover .read-more-link{color:#fff;transform:translate(2px)}.read-more-link svg{width:14px;height:14px}.skeleton-card{background:var(--bg-surface);border-radius:var(--radius-lg);border:1px solid var(--border-subtle);overflow:hidden;height:320px;position:relative}.skeleton-card.card-featured{grid-column:span 2;grid-row:span 2;height:520px}.skeleton-card:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;transform:translate(-100%);background-image:linear-gradient(90deg,rgba(255,255,255,0) 0,rgba(255,255,255,.04) 20%,rgba(255,255,255,.08) 60%,rgba(255,255,255,0));animation:shimmer 1.8s infinite}@keyframes shimmer{to{transform:translate(100%)}}.empty-state{text-align:center;padding:5rem 1.5rem;color:var(--text-muted)}.empty-icon{font-size:3rem;margin-bottom:1rem}.empty-state h3{font-size:1.25rem;color:var(--text-main);margin-bottom:.5rem}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(7,10,16,.75);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:100;display:flex;align-items:center;justify-content:center;padding:1.5rem;opacity:1;transition:opacity var(--transition-fast)}.modal-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);width:100%;max-width:580px;max-height:85vh;display:flex;flex-direction:column;box-shadow:var(--shadow-lg);overflow:hidden}.modal-header{padding:1.25rem 1.5rem;border-bottom:1px solid var(--border-subtle);display:flex;align-items:flex-start;justify-content:space-between}.modal-title{font-size:1.2rem;font-weight:700;color:var(--text-main)}.modal-desc{font-size:.8rem;color:var(--text-muted);margin-top:.2rem}.modal-close-btn{background:none;border:none;color:var(--text-muted);font-size:1.2rem;cursor:pointer;padding:.2rem .5rem;border-radius:var(--radius-sm)}.modal-close-btn:hover{color:var(--text-main);background:var(--bg-surface-elevated)}.modal-body{padding:1.5rem;overflow-y:auto;display:flex;flex-direction:column;gap:1.5rem}.add-feed-form{display:flex;flex-direction:column;gap:.75rem;background:var(--bg-base);padding:1rem;border-radius:var(--radius-md);border:1px solid var(--border-subtle)}.form-row{display:flex;gap:.6rem}.add-feed-form input,.add-feed-form select{padding:.6rem .9rem;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-sm);color:var(--text-main);font-size:.88rem}.add-feed-form input{flex:1}.add-feed-form input:focus,.add-feed-form select:focus{outline:none;border-color:var(--accent)}.section-title{font-size:.92rem;font-weight:700;color:var(--text-muted);margin-bottom:.75rem;text-transform:uppercase;letter-spacing:.05em}.channel-list{display:flex;flex-direction:column;gap:.5rem}.channel-item{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1rem;background:var(--bg-surface-elevated);border-radius:var(--radius-md);border:1px solid var(--border-subtle)}.channel-info{display:flex;align-items:center;gap:.75rem}.channel-item-dot{width:10px;height:10px;border-radius:50%}.channel-name{font-size:.9rem;font-weight:600;color:var(--text-main)}.channel-category-tag{font-size:.72rem;color:var(--text-dimmed);padding:.15rem .45rem;background:rgba(255,255,255,.05);border-radius:var(--radius-sm)}.channel-actions{display:flex;align-items:center;gap:.5rem}.toggle-switch{position:relative;display:inline-block;width:38px;height:22px}.toggle-switch input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;top:0;right:0;bottom:0;left:0;background-color:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-full);transition:var(--transition-fast)}.toggle-slider:before{position:absolute;content:"";height:16px;width:16px;left:2px;bottom:2px;background-color:#fff;border-radius:50%;transition:var(--transition-fast)}.toggle-switch input:checked+.toggle-slider{background-color:var(--accent)}.toggle-switch input:checked+.toggle-slider:before{transform:translate(16px)}.btn-remove-channel{background:none;border:none;color:var(--text-dimmed);cursor:pointer;padding:.3rem .5rem;border-radius:var(--radius-sm)}.btn-remove-channel:hover{color:var(--rose)}.toast-container{position:fixed;bottom:2rem;right:2rem;z-index:200;display:flex;flex-direction:column;gap:.5rem;pointer-events:none}.toast{padding:.75rem 1.25rem;background:var(--bg-surface-elevated);border:1px solid var(--border-hover);border-radius:var(--radius-md);color:var(--text-main);font-size:.88rem;font-weight:500;box-shadow:var(--shadow-lg);pointer-events:auto;animation:slideUp .3s cubic-bezier(.16,1,.3,1);display:flex;align-items:center;gap:.6rem}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.hidden{display:none!important}@media (max-width: 1200px){.bento-container{grid-template-columns:repeat(3,1fr)}}@media (max-width: 900px){.bento-container{grid-template-columns:repeat(2,1fr)}.feed-card.card-featured{grid-column:span 2;grid-row:span 1}.feed-card.card-featured .card-banner{height:200px}}@media (max-width: 640px){.header-container{flex-direction:column;align-items:stretch;gap:.85rem}.header-actions,.search-box{max-width:100%}.btn-text{display:none}.bento-container{grid-template-columns:1fr;gap:1rem}.feed-card.card-featured,.feed-card.card-wide{grid-column:span 1;grid-row:span 1}.feed-card.card-featured .card-banner{height:180px}.toast-container{left:1rem;right:1rem;bottom:1rem}}