*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--primary-color:#ff6b6b;--primary-dark:#ee5a5a;--secondary-color:#4ecdc4;--bg-color:#f5f7fa;--card-bg:#fff;--text-primary:#2c3e50;--text-secondary:#7f8c8d;--border-color:#e1e8ed;--shadow:0 2px 8px #00000014;--shadow-hover:0 4px 16px #0000001f;--radius:12px;--radius-sm:8px;--transition:all .3s ease}body{background-color:var(--bg-color);color:var(--text-primary);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6}.app-container{max-width:1200px;margin:0 auto;padding:20px}.app-header{background:linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);color:#fff;border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:24px;padding:30px 20px}.app-title{align-items:center;gap:12px;margin-bottom:8px;font-size:28px;font-weight:700;display:flex}.app-title:before{content:"📰";font-size:32px}.app-subtitle{opacity:.9;font-size:14px}.controls-section{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);flex-wrap:wrap;justify-content:space-between;align-items:center;gap:16px;margin-bottom:24px;padding:20px;display:flex}.tab-group{background:var(--bg-color);border-radius:var(--radius-sm);gap:8px;padding:4px;display:flex}.tab-btn{color:var(--text-secondary);cursor:pointer;border-radius:var(--radius-sm);transition:var(--transition);background:0 0;border:none;align-items:center;gap:6px;padding:10px 24px;font-size:15px;font-weight:500;display:flex}.tab-btn:hover{color:var(--text-primary)}.tab-btn.active{background:var(--card-bg);color:var(--primary-color);box-shadow:0 2px 4px #00000014}.tab-btn[data-tab=domestic]:before{content:"🇨🇳"}.tab-btn[data-tab=international]:before{content:"🌍"}.date-selector-wrapper{align-items:center;gap:8px;display:flex}.date-selector-wrapper label{color:var(--text-secondary);font-size:14px;font-weight:500}#date-selector{border:1px solid var(--border-color);border-radius:var(--radius-sm);background:var(--card-bg);color:var(--text-primary);cursor:pointer;transition:var(--transition);min-width:180px;padding:10px 16px;font-size:14px}#date-selector:hover{border-color:var(--primary-color)}#date-selector:focus{border-color:var(--primary-color);outline:none;box-shadow:0 0 0 3px #ff6b6b1a}#news-container{grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:20px;display:grid}.platform-section{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);transition:var(--transition);overflow:hidden}.platform-section:hover{box-shadow:var(--shadow-hover)}.platform-header{color:#fff;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.platform-name{font-size:16px;font-weight:600}.platform-count{opacity:.9;background:#fff3;border-radius:20px;padding:4px 10px;font-size:12px}.news-list{padding:12px}.news-item{border-radius:var(--radius-sm);cursor:pointer;transition:var(--transition);align-items:flex-start;gap:12px;margin-bottom:4px;padding:12px;display:flex}.news-item:last-child{margin-bottom:0}.news-item:hover{background:var(--bg-color)}.news-rank{border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:24px;height:24px;font-size:13px;font-weight:700;display:flex}.rank-1{color:#fff;background:linear-gradient(135deg,#ff6b6b,#ee5a5a)}.rank-2{color:#fff;background:linear-gradient(135deg,#ffa726,#ff9800)}.rank-3{color:#fff;background:linear-gradient(135deg,#66bb6a,#4caf50)}.rank-other{background:var(--bg-color);color:var(--text-secondary)}.news-content{flex:1;min-width:0}.news-title{color:var(--text-primary);text-overflow:ellipsis;-webkit-line-clamp:2;-webkit-box-orient:vertical;margin-bottom:6px;font-size:14px;font-weight:500;line-height:1.5;display:-webkit-box;overflow:hidden}.news-item:hover .news-title{color:var(--primary-color)}.news-meta{align-items:center;gap:12px;display:flex}.news-hot{color:var(--text-secondary);align-items:center;gap:4px;font-size:12px;display:flex}.fire-icon{width:14px;height:14px;color:var(--primary-color)}.modal-overlay{-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:1000;opacity:0;visibility:hidden;transition:var(--transition);background:#0009;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.modal-overlay.active{opacity:1;visibility:visible}.modal-container{background:var(--card-bg);border-radius:var(--radius);width:100%;max-width:600px;max-height:80vh;transition:var(--transition);overflow:hidden;transform:scale(.9)translateY(20px);box-shadow:0 20px 60px #0000004d}.modal-overlay.active .modal-container{transform:scale(1)translateY(0)}.modal-header-section{border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:flex-start;padding:20px 24px;display:flex}#modal-content{max-height:calc(80vh - 80px);padding:24px;overflow-y:auto}.modal-close-btn{background:var(--bg-color);cursor:pointer;width:32px;height:32px;transition:var(--transition);border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;display:flex}.modal-close-btn:hover{background:var(--border-color)}.modal-close-btn svg{width:18px;height:18px;color:var(--text-secondary)}.modal-header{gap:12px;margin-bottom:16px;display:flex}.modal-platform{background:linear-gradient(135deg, var(--primary-color), var(--primary-dark));color:#fff;border-radius:20px;padding:6px 14px;font-size:13px;font-weight:500}.modal-rank{background:var(--bg-color);color:var(--text-secondary);border-radius:20px;padding:6px 14px;font-size:13px;font-weight:500}.modal-title{color:var(--text-primary);margin-bottom:16px;font-size:22px;font-weight:700;line-height:1.4}.modal-meta{border-bottom:1px solid var(--border-color);gap:16px;margin-bottom:20px;padding-bottom:20px;display:flex}.modal-date{color:var(--text-secondary);font-size:14px}.modal-hot{color:var(--primary-color);align-items:center;gap:6px;font-size:14px;font-weight:500;display:flex}.modal-hot .fire-icon{width:16px;height:16px}.modal-summary{border-radius:var(--radius-sm);border-left:4px solid var(--primary-color);color:var(--text-primary);background:linear-gradient(135deg,#fff5f5,#fff);margin-bottom:20px;padding:16px;font-size:15px;line-height:1.7}.modal-full-content{color:var(--text-primary);font-size:15px;line-height:1.8}@media (width<=768px){.app-container{padding:12px}.app-header{margin-bottom:16px;padding:20px 16px}.app-title{font-size:22px}.app-title:before{font-size:26px}.controls-section{flex-direction:column;align-items:stretch;gap:12px;padding:16px}.tab-group{width:100%}.tab-btn{flex:1;justify-content:center;padding:12px 16px;font-size:14px}.date-selector-wrapper{width:100%}#date-selector{flex:1;min-width:auto}#news-container{grid-template-columns:1fr;gap:16px}.platform-header{padding:14px 16px}.news-list{padding:8px}.news-item{padding:10px}.modal-container{max-height:90vh;margin:12px}#modal-content{max-height:calc(90vh - 70px);padding:16px}.modal-title{font-size:18px}.modal-header-section{padding:16px}}@media (width<=480px){.app-title{font-size:20px}.platform-name{font-size:15px}.news-title{font-size:13px}.modal-title{font-size:17px}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-color);border-radius:4px}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.platform-section{animation:.4s forwards fadeIn}.platform-section:first-child{animation-delay:50ms}.platform-section:nth-child(2){animation-delay:.1s}.platform-section:nth-child(3){animation-delay:.15s}.platform-section:nth-child(4){animation-delay:.2s}.platform-section:nth-child(5){animation-delay:.25s}.platform-section:nth-child(6){animation-delay:.3s}.platform-section:nth-child(7){animation-delay:.35s}.platform-section:nth-child(8){animation-delay:.4s}.empty-state{background:var(--card-bg);border-radius:var(--radius);box-shadow:var(--shadow);text-align:center;grid-column:1/-1;padding:60px 20px}.empty-icon{margin-bottom:20px;font-size:64px}.empty-title{color:var(--text-primary);margin-bottom:12px;font-size:22px;font-weight:600}.empty-desc{color:var(--text-secondary);font-size:14px;line-height:1.6}