.hero{position:relative;overflow:hidden;background:linear-gradient(160deg,#eff6ff,#dbeafe,#e0e7ff 60%,#ede9fe);padding:80px 32px 100px}.hero:before{content:"";position:absolute;top:-200px;right:-200px;width:600px;height:600px;border-radius:50%;background:radial-gradient(circle,rgba(37,99,235,.08),transparent 70%);pointer-events:none}.hero:after{content:"";position:absolute;bottom:-150px;left:-150px;width:500px;height:500px;border-radius:50%;background:radial-gradient(circle,rgba(16,185,129,.06),transparent 70%);pointer-events:none}.hero-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;gap:64px;position:relative;z-index:1}.hero-text{flex:1}.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#fffc;backdrop-filter:blur(8px);border:1px solid rgba(37,99,235,.15);border-radius:50px;padding:6px 18px 6px 8px;font-size:13px;font-weight:600;color:var(--primary-dark);margin-bottom:28px;box-shadow:var(--shadow-sm)}.hero-badge-dot{width:24px;height:24px;border-radius:50%;background:var(--secondary);display:flex;align-items:center;justify-content:center;font-size:12px}.hero h1{font-size:48px;font-weight:900;line-height:1.2;margin-bottom:20px;color:var(--text);letter-spacing:-.5px}.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--primary),var(--primary-deeper));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero-desc{font-size:18px;color:var(--text-secondary);line-height:1.8;margin-bottom:36px;max-width:520px}.hero-actions{display:flex;gap:12px;margin-bottom:40px}.hero-social-proof{display:flex;align-items:center;gap:16px}.hero-visual{flex:0 0 480px;position:relative}.hero-card-main{background:#fff;border-radius:var(--radius-xl);padding:32px;box-shadow:var(--shadow-xl);border:1px solid var(--border-light);position:relative;z-index:2}.hero-card-header{display:flex;align-items:center;gap:12px;margin-bottom:24px}.hero-card-icon{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,var(--primary-light),#E0E7FF);display:flex;align-items:center;justify-content:center;font-size:24px}.hero-card-header h3{font-size:18px;font-weight:700}.hero-card-header p{font-size:13px;color:var(--text-muted)}.hero-card-steps{display:flex;flex-direction:column;gap:12px}.hero-step{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--bg-gray);border-radius:var(--radius)}.hero-step-num{width:28px;height:28px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;flex-shrink:0}.hero-step p{font-size:14px;color:var(--text);font-weight:500}.hero-card-float{position:absolute;top:-20px;right:-20px;background:#fff;border-radius:var(--radius-lg);padding:16px 20px;box-shadow:var(--shadow-lg);border:1px solid var(--border-light);display:flex;align-items:center;gap:10px;z-index:3;animation:float 3s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-8px)}}.float-check{width:32px;height:32px;border-radius:50%;background:var(--secondary-light);display:flex;align-items:center;justify-content:center;font-size:16px}.float-text{font-size:13px;font-weight:600}.float-text span{color:var(--secondary);display:block;font-size:11px;font-weight:500}.categories{padding:80px 32px;background:var(--bg-gray)}.categories-inner{max-width:1280px;margin:0 auto}.cat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.cat-card{background:#fff;border:1px solid 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 32px;background:var(--bg)}.tutorials-inner{max-width:1280px;margin:0 auto}.tut-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.tut-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all .3s;cursor:pointer;display:block;color:var(--text)}.tut-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-4px);color:var(--text)}.tut-thumb{height:200px;position:relative;overflow:hidden;background:linear-gradient(135deg,#dbeafe,#93c5fd)}.tut-thumb-img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .4s ease}.tut-card:hover .tut-thumb-img{transform:scale(1.05)}.tut-thumb-bg-fallback{position:absolute;inset:0;align-items:center;justify-content:center}.tut-thumb-icon-placeholder{font-size:48px;font-weight:900;color:#ffffff80;letter-spacing:2px}.tut-tag{position:absolute;top:14px;left:14px;padding:4px 12px;border-radius:6px;font-size:11px;font-weight:700;backdrop-filter:blur(8px);z-index:2}.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}.tut-more{text-align:center;margin-top:40px}.cta-section{padding:80px 32px;background:var(--bg)}.cta-inner{max-width:800px;margin:0 auto;text-align:center;background:linear-gradient(135deg,var(--primary),var(--primary-deeper));border-radius:var(--radius-xl);padding:64px 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}}