:root{--hub-bg:#f8fafc;--hub-card-bg:#ffffff;--hub-card-border:#e2e8f0;--hub-text-primary:#0f172a;--hub-text-secondary:#475569;--hub-text-muted:#64748b;--hub-primary:#0f75bd;--hub-primary-glow:rgba(15, 117, 189, 0.15);--hub-accent:#48c7ec;--hub-accent-glow:rgba(72, 199, 236, 0.15);--hub-divider-color:#e2e8f0;--cat-ai-start:#8b5cf6;--cat-ai-end:#d946ef;--cat-doc-start:#0f75bd;--cat-doc-end:#48c7ec;--cat-seo-start:#10b981;--cat-seo-end:#059669;--cat-util-start:#f59e0b;--cat-util-end:#d97706;--hub-transition:all 0.3s cubic-bezier(0.4, 0, 0.2, 1)}body.dark-mode{--hub-bg:#0f172a;--hub-card-bg:#1e293b;--hub-card-border:#334155;--hub-text-primary:#f8fafc;--hub-text-secondary:#cbd5e1;--hub-text-muted:#94a3b8;--hub-primary:#38bdf8;--hub-primary-glow:rgba(56, 189, 248, 0.25);--hub-divider-color:#334155;--transparent:transparent}.hub-main{background-color:var(--hub-bg);color:var(--hub-text-primary);font-family:'Inter',system-ui,-apple-system,sans-serif;transition:var(--hub-transition);overflow:hidden;padding-bottom:80px}.hub-container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;box-sizing:border-box}.hub-hero{position:relative;padding:80px 0 60px;text-align:center;background:radial-gradient(circle at top right,rgb(72 199 236 / .08) 0%,transparent 60%),radial-gradient(circle at top left,rgb(15 117 189 / .08) 0%,transparent 60%);border-bottom:1px solid var(--hub-card-border)}body.dark-mode .hub-hero{background:radial-gradient(circle at top right,rgb(56 189 248 / .05) 0%,transparent 65%),radial-gradient(circle at top left,rgb(15 117 189 / .03) 0%,transparent 65%)}.hub-hero-inner{max-width:800px;margin:0 auto}.hub-hero-badge{display:inline-block;padding:6px 16px;font-size:13px;font-weight:600;color:var(--hub-primary);background:var(--hub-primary-glow);border-radius:50px;margin-bottom:20px;letter-spacing:.5px;text-transform:uppercase}.text-center{text-align:center}.hub-hero-title{font-size:42px;font-weight:800;line-height:1.3!important;margin:0 0 16px 0;letter-spacing:-1px;background:linear-gradient(135deg,var(--hub-text-primary) 30%,var(--hub-primary) 100%);-webkit-background-clip:text;-webkit-text-fill-color:#fff0}.hub-hero-subtitle{font-size:18px;line-height:1.6;color:var(--hub-text-secondary);margin:0 0 40px 0}.hub-search-wrapper{max-width:620px;margin:0 auto}.hub-search-box{position:relative;display:flex;align-items:center;background:var(--hub-card-bg);border:2px solid var(--hub-card-border);border-radius:99px;padding:4px 6px 4px 20px;box-shadow:0 10px 25px -5px rgb(0 0 0 / .03);transition:var(--hub-transition)}.hub-search-box:focus-within{border-color:var(--hub-primary);box-shadow:0 10px 30px -5px var(--hub-primary-glow)}.hub-search-icon{width:22px;height:22px;color:var(--hub-text-muted);margin-right:12px;flex-shrink:0}.hub-search-box input{width:100%;margin-right:10px;border:none;background:var(--transparent)!important;padding:12px 0;font-size:16px;font-weight:500;color:var(--hub-text-primary);outline:none}body.dark-mode .hub-search-box input{background:var(--transparent)!important}.hub-search-box input::placeholder{color:var(--hub-text-muted)}.hub-search-clear{border:none;background:#fff0;font-size:24px;color:var(--hub-text-muted);cursor:pointer;padding:0 12px;line-height:1;transition:var(--hub-transition)}.hub-search-clear:hover{color:var(--hub-text-primary)}.hub-search-stats{margin-top:14px;font-size:14px;color:var(--hub-text-muted);font-weight:500}.hub-search-stats span{color:var(--hub-text-primary);font-weight:700}.hub-tools-section{padding:50px 0}.hub-filters-bar{position:relative;display:flex;justify-content:center;margin-bottom:40px;width:100%}.hub-tabs{display:flex;flex-wrap:nowrap;gap:10px;background:rgb(226 232 240 / .4);padding:6px;border-radius:99px;border:1px solid var(--hub-card-border);overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch;max-width:100%}.hub-tabs::-webkit-scrollbar{display:none}body.dark-mode .hub-tabs{background:rgb(30 41 59 / .4)}.hub-tab-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:none;background:#fff0;padding:10px 20px;font-size:14px;font-weight:600;color:var(--hub-text-secondary);border-radius:99px;cursor:pointer;transition:var(--hub-transition);outline:none;flex-shrink:0}.hub-tab-btn:hover{color:var(--hub-text-primary)}.hub-tab-btn.active{background:var(--hub-card-bg);color:var(--hub-primary);box-shadow:0 4px 12px rgb(0 0 0 / .05)}.hub-tab-svg{width:18px;height:18px;display:block;stroke-width:2.25px;flex-shrink:0;transition:var(--hub-transition)}.hub-tab-btn:hover .hub-tab-svg{transform:translateY(-1px) scale(1.05)}.hub-tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;transition:var(--hub-transition)}.hub-tool-card{height:100%;opacity:1;transform:scale(1);transition:opacity 0.3s ease,transform 0.3s ease}.hub-tool-card.filtered-out{display:none}.hub-tool-link{text-decoration:none!important;color:inherit;display:block;height:100%}.hub-tool-card-inner{position:relative;background:var(--hub-card-bg);border:1px solid var(--hub-card-border);border-radius:20px;padding:28px;height:100%;display:flex;flex-direction:column;box-shadow:0 4px 6px -1px rgb(0 0 0 / .01),0 2px 4px -1px rgb(0 0 0 / .01);transition:var(--hub-transition);box-sizing:border-box}.hub-tool-card:hover .hub-tool-card-inner{transform:translateY(-6px);border-color:var(--hub-primary);box-shadow:0 20px 25px -5px rgb(15 117 189 / .08),0 10px 10px -5px rgb(15 117 189 / .04)}body.dark-mode .hub-tool-card:hover .hub-tool-card-inner{box-shadow:0 20px 25px -5px rgb(0 0 0 / .25),0 10px 10px -5px rgb(0 0 0 / .15)}.hub-tool-illustration-wrapper{display:flex;align-items:center;justify-content:center;width:100%;height:100px;margin:10px 0 24px;transition:var(--hub-transition)}.hub-tool-card:hover .hub-tool-illustration-wrapper{transform:scale(1.08) translateY(-3px)}.tool-svg{width:150px;height:150px;display:block}.hub-tool-badges{position:absolute;top:16px;right:16px;display:flex;flex-direction:column;gap:4px;z-index:10}.hub-badge{display:inline-block;padding:4px 10px;font-size:11px;font-weight:700;text-transform:uppercase;border-radius:6px;letter-spacing:.2px}.badge-ai-powered{background:rgb(139 92 246 / .1);color:#8b5cf6;border:1px solid rgb(139 92 246 / .2)}.badge-hot{background:rgb(239 68 68 / .1);color:#ef4444;border:1px solid rgb(239 68 68 / .2);animation:pulseGlow 2s infinite}@keyframes pulseGlow{0%,100%{opacity:1}50%{opacity:.7}}.badge-100-client{background:rgb(16 185 129 / .1);color:#10b981;border:1px solid rgb(16 185 129 / .2)}.badge-sang-tao{background:rgb(236 72 153 / .1);color:#ec4899;border:1px solid rgb(236 72 153 / .2)}.badge-pho-bien{background:rgb(14 165 233 / .1);color:#0ea5e9;border:1px solid rgb(14 165 233 / .2)}.badge-dev-tool{background:rgb(100 116 139 / .1);color:var(--hub-text-secondary);border:1px solid rgb(100 116 139 / .2)}.badge-rankmath-seo{background:rgb(79 70 229 / .1);color:#4f46e5;border:1px solid rgb(79 70 229 / .2)}.badge-webmaster{background:rgb(20 184 166 / .1);color:#14b8a6;border:1px solid rgb(20 184 166 / .2)}.badge-seo-tool{background:rgb(16 185 129 / .1);color:#10b981;border:1px solid rgb(16 185 129 / .2)}.badge-dinh-dang{background:rgb(99 102 241 / .1);color:#6366f1;border:1px solid rgb(99 102 241 / .2)}.badge-kich-thuoc{background:rgb(244 63 94 / .1);color:#f43f5e;border:1px solid rgb(244 63 94 / .2)}.badge-mang-may-tinh{background:rgb(6 182 212 / .1);color:#06b6d4;border:1px solid rgb(6 182 212 / .2)}.badge-van-ban{background:rgb(245 158 11 / .1);color:#d97706;border:1px solid rgb(245 158 11 / .2)}.badge-mat-ma{background:rgb(14 165 233 / .1);color:#0ea5e9;border:1px solid rgb(14 165 233 / .2)}.badge-bao-mat{background:rgb(220 38 38 / .1);color:#dc2626;border:1px solid rgb(220 38 38 / .2)}.hub-tool-body{flex-grow:1;margin-bottom:24px}.hub-tool-title{font-size:19px;font-weight:700;line-height:1.4;margin:0 0 10px 0;color:var(--hub-text-primary);transition:var(--hub-transition)}.hub-tool-card:hover .hub-tool-title{color:var(--hub-primary)}.hub-tool-desc{font-size:14px;line-height:1.6;color:var(--hub-text-muted);margin:0;display:none}.hub-tool-footer{display:flex;align-items:center;border-top:1px dashed var(--hub-card-border);padding-top:18px}.hub-tool-cta{display:inline-flex;align-items:center;font-size:14px;font-weight:700;color:var(--hub-primary);transition:var(--hub-transition)}.hub-arrow-icon{width:16px;height:16px;margin-left:6px;transition:transform 0.3s ease}.hub-tool-card:hover .hub-arrow-icon{transform:translateX(6px)}.hub-no-results{text-align:center;padding:60px 20px;background:var(--hub-card-bg);border:1px dashed var(--hub-card-border);border-radius:20px;max-width:480px;margin:40px auto 0}.hub-no-results-icon{font-size:48px;margin-bottom:16px}.hub-no-results h3{margin:0 0 8px 0;font-size:18px;color:var(--hub-text-primary)}.hub-no-results p{color:var(--hub-text-muted);margin:0 0 20px 0;font-size:14px}.hub-reset-btn{background:var(--hub-primary);color:#fff;border:none;border-radius:8px;padding:10px 20px;font-size:14px;font-weight:600;cursor:pointer;transition:var(--hub-transition)}.hub-reset-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px var(--hub-primary-glow)}.hub-divider{border:0;height:1px;background-color:var(--hub-divider-color);margin:50px 0 70px}.hub-services-summary{padding-bottom:80px}.hub-services-summary .section-title h2{font-size:28px;font-weight:800;margin:0 0 10px 0;color:var(--hub-text-primary)}.hub-services-summary .section-subtitle{font-size:16px;color:var(--hub-text-muted);margin-bottom:50px}.hub-services-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:24px}.hub-svc-card{background:var(--hub-card-bg);border:1px solid var(--hub-card-border);border-radius:16px;padding:30px 24px;transition:var(--hub-transition)}.hub-svc-card:hover{transform:translateY(-4px);box-shadow:0 10px 20px rgb(0 0 0 / .02);border-color:var(--hub-primary)}body.dark-mode .hub-svc-card:hover{box-shadow:0 10px 20px rgb(0 0 0 / .15)}.hub-svc-card .tool-svg{width:100px;height:100px;display:block;margin-bottom:20px;transition:var(--hub-transition)}.hub-svc-card:hover .tool-svg{transform:scale(1.1)}.hub-svc-card h3{font-size:17px;font-weight:700;margin:0 0 10px 0;color:var(--hub-text-primary)}.hub-svc-card p{font-size:13.5px;line-height:1.5;color:var(--hub-text-muted);margin:0 0 18px 0}.hub-svc-link{font-size:13.5px;font-weight:700;color:var(--hub-primary);text-decoration:none!important;transition:var(--hub-transition)}.hub-svc-link:hover{padding-left:4px}@media (max-width:991px){.hub-hero-title{font-size:34px}.hub-hero-subtitle{font-size:16px}.hub-tools-grid{grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:20px}.hub-tab-btn{padding:8px 18px;font-size:13.5px}}@media (max-width:767px){.hub-hero{padding:50px 0 40px}.hub-hero-title{font-size:28px}.hub-hero-subtitle{margin-bottom:25px}.hub-filters-bar::after{content:'';position:absolute;top:0;right:0;height:100%;width:40px;background:linear-gradient(to right,transparent,var(--hub-bg));pointer-events:none;z-index:2;border-radius:0 16px 16px 0}.hub-tabs{border-radius:16px;justify-content:flex-start;padding:8px}.hub-tab-btn{padding:8px 16px;font-size:13px;width:auto;text-align:center}.hub-tools-section{padding:30px 0}.hub-tools-grid{grid-template-columns:1fr}.hub-container{padding:0 16px}.hub-search-box{padding-left:16px}.hub-search-box input{font-size:14.5px}}