:root{--primary:#6366f1;--primary-light:#818cf8;--primary-dark:#4f46e5;--primary-glow:#6366f114;--accent:#06b6d4;--accent-light:#22d3ee;--success:#10b981;--warning:#f59e0b;--danger:#ef4444;--bg-base:#f5f7fa;--bg-surface:#fff;--bg-card:#fff;--bg-elevated:#eef0f5;--bg-hover:#e8ebf0;--text-primary:#1e293b;--text-secondary:#64748b;--text-muted:#94a3b8;--text-inverse:#fff;--border:#e2e8f0;--border-light:#cbd5e1;--border-focus:var(--primary);--gradient-primary:linear-gradient(135deg, #6366f1, #06b6d4);--gradient-hero:linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);--gradient-card:linear-gradient(180deg, #6366f10a 0%, transparent 100%);--radius-sm:6px;--radius-md:10px;--radius-lg:16px;--radius-xl:24px;--shadow-sm:0 1px 3px #00000014;--shadow-md:0 4px 12px #0000001a;--shadow-lg:0 8px 24px #0000001f;--shadow-glow:0 0 20px #6366f11f;--transition-fast:.15s ease;--transition-normal:.3s ease;--transition-slow:.5s ease}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px}body{background:var(--bg-base);color:var(--text-primary);-webkit-font-smoothing:antialiased;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Helvetica Neue,Helvetica,Arial,sans-serif;line-height:1.6}a{color:var(--primary);transition:color var(--transition-fast);text-decoration:none}a:hover{color:var(--primary-dark)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.container-wide{max-width:1400px;margin:0 auto;padding:0 24px}.navbar{z-index:100;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border);background:#ffffffeb;justify-content:space-between;align-items:center;height:64px;padding:0 24px;display:flex;position:sticky;top:0}.navbar-brand{color:var(--text-primary);align-items:center;gap:10px;font-size:1.25rem;font-weight:700;display:flex}.navbar-brand 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var(--border-light)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--primary)}.btn-outline{color:var(--primary);border:1px solid var(--primary);background:0 0}.btn-outline:hover{background:var(--primary-glow)}.btn-danger{background:var(--danger);color:var(--text-inverse)}.btn-danger:hover{background:#dc2626}.btn-sm{border-radius:var(--radius-sm);padding:6px 12px;font-size:.8rem}.btn-lg{border-radius:var(--radius-lg);padding:14px 28px;font-size:1rem}.card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--transition-normal);box-shadow:var(--shadow-sm);padding:24px}.card:hover{border-color:var(--border-light);box-shadow:var(--shadow-md)}.card-gradient{background:var(--gradient-card);border:1px solid #6366f11a}.card-header{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.card-title{color:var(--text-primary);font-size:1.1rem;font-weight:600}.card-subtitle{color:var(--text-muted);margin-top:4px;font-size:.85rem}.hero{text-align:center;background:linear-gradient(#6366f10f 0%,#0000 100%);padding:80px 24px 100px;position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background:radial-gradient(#6366f114 0%,#0000 70%);width:200%;height:200%;animation:8s ease-in-out infinite alternate hero-glow;position:absolute;top:-50%;left:-50%}@keyframes hero-glow{0%{opacity:.5;transform:scale(1)}to{opacity:.8;transform:scale(1.1)}}.hero-title{color:var(--text-primary);margin-bottom:16px;font-size:3rem;font-weight:800;line-height:1.2}.hero-title .gradient-text{background:var(--gradient-hero);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.hero-desc{color:var(--text-secondary);max-width:600px;margin:0 auto 32px;font-size:1.1rem}.hero-actions{justify-content:center;gap:12px;margin-top:32px;display:flex}.features-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;padding:40px 0;display:grid}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);text-align:center;transition:all var(--transition-normal);box-shadow:var(--shadow-sm);padding:28px}.feature-card:hover{border-color:var(--primary);box-shadow:var(--shadow-md), var(--shadow-glow);transform:translateY(-4px)}.feature-icon{background:var(--primary-glow);width:48px;height:48px;color:var(--primary);border-radius:12px;justify-content:center;align-items:center;margin:0 auto 16px;font-size:1.5rem;display:flex}.feature-title{color:var(--text-primary);margin-bottom:8px;font-size:1rem;font-weight:600}.feature-desc{color:var(--text-muted);font-size:.85rem;line-height:1.5}.pricing-section{padding:40px 0}.pricing-filters{flex-wrap:wrap;gap:8px;margin-bottom:24px;display:flex}.filter-btn{border-radius:var(--radius-sm);background:var(--bg-card);color:var(--text-secondary);border:1px solid var(--border);cursor:pointer;transition:all var(--transition-fast);padding:8px 16px;font-size:.85rem;font-weight:500}.filter-btn:hover,.filter-btn.active{background:var(--primary-glow);color:var(--primary);border-color:var(--primary)}.model-table{border-collapse:separate;border-spacing:0;width:100%}.model-table th{text-align:left;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;border-bottom:1px solid var(--border);background:var(--bg-surface);padding:12px 16px;font-size:.8rem;font-weight:600}.model-table td{border-bottom:1px solid var(--border);color:var(--text-primary);padding:14px 16px;font-size:.9rem}.model-table tr{transition:background var(--transition-fast)}.model-table 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slide-in;position:fixed;top:80px;right:24px}.toast-success{color:var(--success);background:#10b9811a;border:1px solid #10b9814d}.toast-error{color:var(--danger);background:#ef44441a;border:1px solid #ef44444d}.toast-warning{color:var(--warning);background:#f59e0b1a;border:1px solid #f59e0b4d}.toast-info{color:var(--primary);background:#6366f11a;border:1px solid #6366f14d}@keyframes slide-in{0%{opacity:0;transform:translate(100%)}to{opacity:1;transform:translate(0)}}.pagination{justify-content:center;align-items:center;gap:8px;padding:20px 0;display:flex}.pagination button{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);padding:8px 14px;font-size:.85rem}.pagination button:hover{border-color:var(--primary);color:var(--primary)}.pagination button.active{background:var(--primary);color:var(--text-inverse);border-color:var(--primary)}.pagination button:disabled{opacity:.5;cursor:not-allowed}.search-box{max-width:400px;position:relative}.search-box input{background:var(--bg-base);border:1px solid var(--border);border-radius:var(--radius-md);width:100%;color:var(--text-primary);transition:all var(--transition-fast);outline:none;padding:10px 16px 10px 40px;font-size:.9rem}.search-box input:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-glow)}.search-icon{color:var(--text-muted);font-size:.9rem;position:absolute;top:50%;left:12px;transform:translateY(-50%)}.empty-state{text-align:center;color:var(--text-muted);padding:48px 24px}.empty-state .empty-icon{opacity:.5;margin-bottom:16px;font-size:3rem}.empty-state .empty-title{color:var(--text-secondary);margin-bottom:8px;font-size:1rem;font-weight:600}.empty-state .empty-desc{font-size:.85rem}.loading-spinner{border:3px solid var(--border);border-top-color:var(--primary);border-radius:50%;width:24px;height:24px;animation:.8s linear infinite 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scale-in{0%{opacity:0;transform:scale(.9)}to{opacity:1;transform:scale(1)}}.not-found-page{background:var(--bg-base);text-align:center;justify-content:center;align-items:center;min-height:100vh;display:flex}.not-found-page .error-code{background:var(--gradient-primary);-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text;font-size:8rem;font-weight:800;line-height:1}.not-found-page .error-msg{color:var(--text-secondary);margin:16px 0 32px;font-size:1.2rem}.usage-section{margin-bottom:24px}.usage-bar-chart{border-bottom:1px solid var(--border);align-items:flex-end;gap:6px;height:200px;padding:16px 0;display:flex}.usage-bar{background:var(--gradient-primary);min-width:20px;transition:all var(--transition-normal);border-radius:4px 4px 0 0;flex:1;position:relative}.usage-bar:hover{opacity:.8}.usage-bar .bar-label{color:var(--text-muted);white-space:nowrap;font-size:.7rem;position:absolute;bottom:-28px;left:50%;transform:translate(-50%)}.usage-bar .bar-value{color:var(--text-secondary);white-space:nowrap;font-size:.7rem;font-weight:600;position:absolute;top:-22px;left:50%;transform:translate(-50%)}.usage-legend{color:var(--text-muted);gap:16px;padding:28px 0 0;font-size:.85rem;display:flex}.usage-legend span:before{content:"";vertical-align:middle;border-radius:3px;width:12px;height:12px;margin-right:6px;display:inline-block}.usage-legend .legend-cost:before{background:var(--gradient-primary)}.usage-legend .legend-tokens:before{background:var(--accent)}.ranking-item{border-bottom:1px solid var(--border);align-items:center;padding:12px 0;display:flex}.ranking-item:last-child{border-bottom:none}.ranking-rank{border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;margin-right:12px;font-size:.75rem;font-weight:700;display:flex}.ranking-rank.top1{color:var(--warning);background:#f59e0b26}.ranking-rank.top2{color:var(--primary);background:#6366f11f}.ranking-rank.top3{color:var(--accent);background:#06b6d41f}.ranking-rank.normal{background:var(--bg-elevated);color:var(--text-muted)}.ranking-info{flex:1}.ranking-name{font-size:.9rem;font-weight:600}.ranking-detail{color:var(--text-muted);font-size:.8rem}.ranking-cost{color:var(--primary);font-size:.9rem;font-weight:600}@media (width<=768px){.hero-title{font-size:2rem}.hero-desc{font-size:.95rem}.sidebar{width:60px;padding:12px 0}.sidebar-brand,.sidebar-nav a span:not(.nav-icon),.sidebar-section{display:none}.sidebar-nav a{justify-content:center;padding:12px}.dashboard-main{padding:16px}.stats-grid{grid-template-columns:repeat(2,1fr)}.recharge-grid{grid-template-columns:repeat(3,1fr)}.navbar-links a{padding:8px 10px;font-size:.8rem}.model-table th:nth-child(4),.model-table td:nth-child(4),.model-table th:nth-child(5),.model-table td:nth-child(5){display:none}}@media (width<=480px){.hero-title{font-size:1.5rem}.hero-actions{flex-direction:column;align-items:center}.stats-grid{grid-template-columns:1fr}.recharge-grid{grid-template-columns:repeat(2,1fr)}}.footer{border-top:1px solid var(--border);background:var(--bg-surface);margin-top:60px;padding:40px 24px}.footer-grid{grid-template-columns:2fr 1fr 1fr;gap:40px;max-width:1200px;margin:0 auto;display:grid}.footer-brand{color:var(--text-primary);margin-bottom:12px;font-size:1.1rem;font-weight:700}.footer-desc{color:var(--text-muted);font-size:.85rem;line-height:1.5}.footer-links-title{color:var(--text-secondary);margin-bottom:12px;font-size:.9rem;font-weight:600}.footer-links a{color:var(--text-muted);transition:color var(--transition-fast);padding:4px 0;font-size:.85rem;display:block}.footer-links a:hover{color:var(--primary)}.footer-bottom{text-align:center;color:var(--text-muted);border-top:1px solid var(--border);max-width:1200px;margin-top:24px;margin-left:auto;margin-right:auto;padding-top:24px;font-size:.8rem}@media (width<=768px){.footer-grid{grid-template-columns:1fr;gap:24px}}