@import url('https://fonts.googleapis.com/css2?family=Urbanist:ital,wght@0,100..900;1,100..900&display=swap');:root{--background-color:#FAFAFA;--background-secondary:#FFFFFF;--background-tertiary:#F2F2F7;--accent-color:#007AFF;--accent-hover:#0056CC;--text-primary:#000000;--text-secondary:#6D6D70;--text-tertiary:#8E8E93;--text-white:#FFFFFF;--red:#FF3B30;--orange:#FF9500;--yellow:#FFCC02;--green:#34C759;--mint:#00C7BE;--teal:#30B0C7;--cyan:#32D2FF;--blue:#007AFF;--indigo:#5856D6;--purple:#AF52DE;--pink:#FF2D92;--brown:#A2845E;--gray:#8E8E93;--coral:#F25C54;--lime:#A4E83B;--sky:#24A6EB;--lavender:#8B7BD8;--rose:#E63E62;--shadow-light:0 1px 3px rgba(0,0,0,0.1);--shadow-medium:0 4px 12px rgba(0,0,0,0.1);--shadow-heavy:0 8px 25px rgba(0,0,0,0.15);--radius-small:6px;--radius-medium:12px;--radius-large:20px;--radius-xl:28px;--font-display:'Urbanist',sans-serif;--font-text:'Urbanist',sans-serif;--container-max-width:1200px;--sidebar-width:280px;--header-height:60px;--breadcrumb-height:48px;--transition-fast:0.15s ease;--transition-normal:0.25s ease;--transition-slow:0.4s ease} *{margin:0;padding:0;box-sizing:border-box} body{font-family:var(--font-text);background-color:var(--background-color);color:var(--text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale} .container{max-width:var(--container-max-width);margin:0 auto;padding:0 20px} h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:600;line-height:1.2;color:var(--text-primary)} h1{font-size:2.5rem;font-weight:700} h2{font-size:2rem;font-weight:600} h3{font-size:1.5rem;font-weight:600} h4{font-size:1.25rem;font-weight:500} h5{font-size:1.125rem;font-weight:500} h6{font-size:1rem;font-weight:500} p{color:var(--text-secondary);margin-bottom:1rem} .btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:8px 16px;border:none;border-radius:var(--radius-medium);font-family:var(--font-text);font-size:0.875rem;font-weight:500;text-decoration:none;cursor:pointer;transition:all var(--transition-fast);white-space:nowrap;min-height:36px} .btn-primary{background-color:var(--accent-color);color:var(--text-white);box-shadow:var(--shadow-light)} .btn-primary:hover{background-color:var(--accent-hover);transform:translateY(-1px);box-shadow:var(--shadow-medium)} .btn-ghost{background-color:transparent;color:var(--accent-color);border:1px solid var(--accent-color)} .btn-ghost:hover{background-color:var(--accent-color);color:var(--text-white)} .btn-full{width:100%} .top-header{background-color:rgba(255,255,255,0.95);backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,0.05);height:var(--header-height);position:sticky;top:0;z-index:100} .top-header .container{display:flex;align-items:center;justify-content:space-between;height:100%} .header-left,.header-center,.header-right{flex:1;display:flex;align-items:center} .header-center{justify-content:center} .header-right{justify-content:flex-end} .logo-section{display:flex;align-items:center;gap:0.75rem;color:inherit;text-decoration:none} .logo-icon{font-size:1.5rem} .logo-image{display:block;width:32px;height:32px;border-radius:8px;object-fit:contain} .site-name{font-size:1.25rem;font-weight:700;color:var(--text-primary)} .search-container{position:relative;width:100%;max-width:480px} .search-input{width:100%;padding:10px 16px 10px 44px;border:1px solid rgba(0,0,0,0.1);border-radius:var(--radius-medium);background-color:var(--background-tertiary);font-family:var(--font-text);font-size:0.875rem;transition:all var(--transition-fast)} .search-input:focus{outline:none;border-color:var(--accent-color);background-color:var(--background-secondary);box-shadow:0 0 0 3px rgba(0,122,255,0.1)} .search-hint{position:absolute;right:-120px;top:50%;transform:translateY(-50%);display:none;align-items:center;gap:6px;font-size:0.75rem;color:var(--text-tertiary);background:var(--background-secondary);padding:4px 8px;border-radius:var(--radius-small);border:1px solid var(--border-light);white-space:nowrap} .search-hint svg{width:14px;height:14px;flex-shrink:0} .search-hint.show{display:flex} .search-button{position:absolute;left:12px;top:50%;transform:translateY(-50%);background:none;border:none;color:var(--text-tertiary);cursor:pointer;padding:4px;display:flex;align-items:center;justify-content:center} .search-button:hover{color:var(--accent-color)} .auth-buttons{display:flex;gap:0.75rem;align-items:center} .user-menu{display:flex;gap:0.75rem;align-items:center;padding:8px 16px;background-color:var(--background-tertiary);border-radius:var(--radius-medium)} .user-name{font-weight:500;color:var(--text-primary)} .breadcrumb-nav{background-color:var(--background-secondary);border-bottom:1px solid rgba(0,0,0,0.05);height:var(--breadcrumb-height)} .breadcrumb-nav .container{display:flex;align-items:center;height:100%} .breadcrumb-items{display:flex;gap:1rem} .breadcrumb-item{display:inline-flex;align-items:center;padding:6px 12px;border:none;border-radius:var(--radius-small);background-color:transparent;font-family:var(--font-text);font-size:0.875rem;font-weight:500;color:var(--text-secondary);cursor:pointer;text-decoration:none;transition:all var(--transition-fast)} .breadcrumb-item.active,.breadcrumb-item:hover{background-color:var(--background-tertiary);color:var(--text-primary)} .hero-card-title a,.category-name a{color:inherit;text-decoration:none} .main-content{padding:32px 0;min-height:calc(100vh - var(--header-height) - var(--breadcrumb-height))} .hero-cards-section{margin-bottom:40px} .hero-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;width:100%} .content-grid{display:grid;grid-template-columns:1fr;gap:40px;align-items:start} .content-left{display:flex;flex-direction:column;gap:40px} .hero-card{position:relative;height:260px;border-radius:var(--radius-large);overflow:hidden;cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-light)} .hero-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-heavy)} .hero-card-background{position:absolute;top:0;left:0;right:0;bottom:0;z-index:0;pointer-events:none} .hero-card-blue{background-image:linear-gradient(135deg,rgba(0,122,255,0.75) 0%,rgba(90,200,250,0.75) 100%),url('https://images.unsplash.com/photo-1488590528505-98d2b5aba04b?w=1200&h=600&fit=crop&auto=format');background-size:cover,cover;background-position:center,center;background-repeat:no-repeat,no-repeat} .hero-card-coral{background-image:linear-gradient(135deg,rgba(255,149,0,0.75) 0%,rgba(255,59,48,0.75) 100%),url('https://images.unsplash.com/photo-1532094349884-543bc11b234d?w=1200&h=600&fit=crop&auto=format');background-size:cover,cover;background-position:center,center;background-repeat:no-repeat,no-repeat} .hero-card-magenta{background-image:linear-gradient(135deg,rgba(175,82,222,0.75) 0%,rgba(255,45,146,0.75) 100%),url('https://images.unsplash.com/photo-1554224155-6726b3ff858f?w=1200&h=600&fit=crop&auto=format');background-size:cover,cover;background-position:center,center;background-repeat:no-repeat,no-repeat} .hero-card-content{position:relative;z-index:2;padding:24px;height:100%;display:flex;flex-direction:column;justify-content:space-between;color:var(--text-white)} .hero-card-title{font-size:2rem;font-weight:700;margin-bottom:16px;color:var(--text-white);text-shadow:0 2px 4px rgba(0,0,0,0.3);vertical-align:top} .hero-card-articles{list-style:none;display:flex;flex-wrap:wrap;gap:6px;align-items:flex-start} .hero-card-articles li{font-size:0.75rem;font-weight:500;padding:4px 8px;background:rgba(255,255,255,0.2);border-radius:12px;color:white;text-shadow:0 1px 2px rgba(0,0,0,0.3);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,0.1);transition:all 0.2s ease;cursor:pointer;white-space:nowrap} .hero-card-articles li:hover{background:rgba(255,255,255,0.3);transform:translateY(-1px);box-shadow:0 2px 8px rgba(0,0,0,0.2)} .hero-card-articles li::before{display:none} .categories-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px} .category-item{display:flex;align-items:flex-start;gap:16px;padding:24px;background-color:var(--background-secondary);border-radius:var(--radius-large);cursor:pointer;transition:all var(--transition-normal);box-shadow:var(--shadow-light)} .category-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-medium)} .category-icon{width:64px;height:64px;border-radius:var(--radius-medium);display:flex;align-items:center;justify-content:center;font-size:1.5rem;box-shadow:var(--shadow-light);flex-shrink:0} .category-content{flex:1;display:flex;flex-direction:column;gap:8px} .category-name{font-weight:600;color:var(--text-primary);font-size:1.125rem;margin:0} .category-subcategories{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:4px} .category-subcategories li{font-size:0.875rem;color:var(--text-secondary);font-weight:400;cursor:pointer;transition:color var(--transition-fast)} .category-subcategories li:hover{color:var(--accent-color)} .sidebar{position:sticky;top:calc(var(--header-height)+var(--breadcrumb-height)+32px)} .sidebar-section{background-color:var(--background-secondary);border-radius:var(--radius-large);padding:24px;box-shadow:var(--shadow-light)} .sidebar-title{font-size:1.125rem;font-weight:700;margin-bottom:24px;color:var(--text-primary)} .curated-list{margin-bottom:32px} .curated-list:last-child{margin-bottom:0} .list-title{font-size:0.875rem;font-weight:600;color:var(--text-secondary);margin-bottom:12px;text-transform:uppercase;letter-spacing:0.5px} .curated-items{list-style:none;display:flex;flex-direction:column;gap:12px} .curated-item{display:flex;align-items:flex-start;gap:12px;padding:8px;border-radius:var(--radius-small);transition:all var(--transition-fast);cursor:pointer} .curated-item:hover{background-color:var(--background-tertiary)} .item-number{display:flex;align-items:center;justify-content:center;width:20px;height:20px;border-radius:50%;background-color:var(--accent-color);color:var(--text-white);font-size:0.75rem;font-weight:600;flex-shrink:0} .item-title{font-size:0.875rem;font-weight:500;color:var(--text-primary);line-height:1.4} .feed-section{display:flex;flex-direction:column;gap:24px} .feed-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px} .feed-filters{display:flex;gap:12px} .filter-select{padding:8px 12px;border:1px solid rgba(0,0,0,0.1);border-radius:var(--radius-small);background-color:var(--background-secondary);font-family:var(--font-text);font-size:0.875rem;color:var(--text-primary)} .filter-select:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 3px rgba(0,122,255,0.1)} .articles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px} .articles-list{display:flex;flex-direction:column;gap:20px} .hidden{display:none !important} @media (max-width:1024px){:root{--sidebar-width:240px} .content-grid{gap:32px} .hero-cards{grid-template-columns:1fr;gap:16px} .categories-grid{grid-template-columns:1fr;gap:16px}} @media (max-width:768px){.content-grid{grid-template-columns:1fr;gap:24px} .hero-cards-section{margin-bottom:32px} .top-header .container{flex-direction:column;gap:12px;padding:12px 20px} .header-left,.header-center,.header-right{width:100%;justify-content:center} .header-left{order:1} .header-center{order:3} .header-right{order:2} .search-container{max-width:none} .breadcrumb-nav{display:none} .main-content{padding:20px 0} .hero-card{height:200px} .categories-grid{grid-template-columns:1fr;gap:16px} .category-item{padding:20px;gap:12px} .category-icon{width:48px;height:48px;font-size:1.25rem} .category-name{font-size:1rem} .category-subcategories li{font-size:0.8125rem}} @media (max-width:480px){.container{padding:0 16px} .hero-cards{grid-template-columns:1fr;gap:12px} .hero-card-content{padding:20px} .hero-card-title{font-size:1.25rem} .category-item{flex-direction:column;align-items:center;text-align:center;padding:16px} .category-content{align-items:center} .category-subcategories{align-items:center} .hero-card-articles li{font-size:0.7rem;padding:3px 6px}}