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var(--border);border-radius:var(--radius-lg);padding:28px 24px;transition:all .3s;cursor:pointer;position:relative;overflow:hidden;display:block;color:var(--text)}.cat-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-4px);color:var(--text)}.cat-card:after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--secondary));transform:scaleX(0);transition:transform .3s;transform-origin:left}.cat-card:hover:after{transform:scaleX(1)}.cat-icon{font-size:36px;margin-bottom:16px;display:block}.cat-card h3{font-size:17px;font-weight:700;margin-bottom:8px;color:var(--text)}.cat-card p{font-size:13px;color:var(--text-muted);line-height:1.6;margin-bottom:14px}.cat-count{display:inline-flex;align-items:center;gap:4px;font-size:12px;color:var(--primary);font-weight:600;background:var(--primary-50);padding:3px 10px;border-radius:20px}.tutorials{padding:80px 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12px;border-radius:6px;font-size:11px;font-weight:700;backdrop-filter:blur(8px)}.tut-tag-hot{background:#ef4444e6;color:#fff}.tut-tag-guide{background:#2563ebe6;color:#fff}.tut-tag-fix{background:#10b981e6;color:#fff}.tut-body{padding:24px}.tut-body h3{font-size:17px;font-weight:700;margin-bottom:10px;line-height:1.5;color:var(--text)}.tut-body p{font-size:14px;color:var(--text-secondary);line-height:1.7;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.tut-meta{display:flex;justify-content:space-between;align-items:center;font-size:12px;color:var(--text-muted);padding-top:14px;border-top:1px solid var(--border-light)}.tut-meta-tag{background:var(--primary-50);color:var(--primary);padding:2px 8px;border-radius:4px;font-weight:600}.testimonials{padding:80px 32px;background:linear-gradient(160deg,var(--bg-dark),#1E293B);color:#fff}.testimonials-inner{max-width:1280px;margin:0 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48px;position:relative;overflow:hidden}.cta-inner:before{content:"";position:absolute;top:-100px;right:-100px;width:300px;height:300px;border-radius:50%;background:#ffffff0f}.cta-inner:after{content:"";position:absolute;bottom:-80px;left:-80px;width:200px;height:200px;border-radius:50%;background:#ffffff0a}.cta-inner h2{font-size:32px;font-weight:800;color:#fff;margin-bottom:16px;position:relative;z-index:1}.cta-inner p{font-size:17px;color:#fffc;margin-bottom:32px;position:relative;z-index:1}@media(max-width:1024px){.hero-inner{flex-direction:column;text-align:center}.hero-desc{margin:0 auto 36px}.hero-actions,.hero-social-proof{justify-content:center}.hero-visual{flex:none;width:100%;max-width:480px}.cat-grid,.stats-grid{grid-template-columns:repeat(2,1fr)}.trust-bar-inner{flex-direction:column;gap:16px}}@media(max-width:640px){.hero{padding:48px 20px 60px}.hero h1{font-size:32px}.hero-actions{flex-direction:column}.tut-grid,.test-grid{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr;gap:12px}.cat-grid{grid-template-columns:1fr}.cta-inner{padding:40px 24px}.cta-inner h2{font-size:24px}}