.cat-hero{background:linear-gradient(135deg,#1e3a8a 0%,#2563eb 50%,#3b82f6 100%);padding:48px 0 56px;color:#fff;position:relative;overflow:hidden}.cat-hero::before{content:'';position:absolute;inset:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.04'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E")}.cat-hero-inner{position:relative;max-width:720px}.cat-hero-icon{width:56px;height:56px;background:rgba(255,255,255,.15);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:26px;margin-bottom:16px;backdrop-filter:blur(4px)}.cat-hero h1{font-size:32px;font-weight:800;margin-bottom:12px;letter-spacing:.5px}.cat-hero h1 span{font-weight:400;font-size:20px;opacity:.8;margin-left:8px}.cat-hero-desc{font-size:15px;line-height:1.8;opacity:.88;margin-bottom:20px}.cat-hero-stats{display:flex;gap:24px}.cat-hero-stat{display:flex;align-items:center;gap:6px;font-size:13px;opacity:.8}.cat-hero-stat i{font-size:14px}.section{padding:56px 0}.tool-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}.tool-card{background:var(--c-white);border:1px solid var(--c-border);border-radius:var(--radius-md);padding:24px;transition:all .25s;display:flex;flex-direction:column}.tool-card:hover{border-color:var(--c-primary);box-shadow:var(--shadow-md);transform:translateY(-3px)}.tool-card-top{display:flex;align-items:flex-start;gap:14px;margin-bottom:12px}.tool-card-icon{width:46px;height:46px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-size:20px;flex-shrink:0}.tool-card-info{flex:1;min-width:0}.tool-card-info h3{font-size:16px;font-weight:600;margin-bottom:4px}.tool-card-info h3 a{transition:color .2s}.tool-card-info h3 a:hover{color:var(--c-primary)}.tool-card-meta{display:flex;align-items:center;gap:12px;font-size:12px;color:var(--c-text-light)}.tool-card-meta i{margin-right:3px}.tool-card p{font-size:13px;color:var(--c-text-secondary);line-height:1.6;margin-bottom:16px;flex:1}.tool-card-bottom{display:flex;align-items:center;justify-content:space-between}.tool-card-cost{font-size:12px;color:var(--c-text-light)}.tool-card-cost i{color:var(--c-accent);margin-right:3px}.btn-use{padding:7px 18px;font-size:13px;color:#fff;background:var(--c-primary);border-radius:var(--radius-sm);transition:all .2s;font-weight:500;display:inline-flex;align-items:center;gap:5px}.btn-use:hover{background:var(--c-primary-dark);transform:translateY(-1px)}.guide-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:32px}.guide-step{text-align:center;padding:24px 16px;background:var(--c-white);border-radius:var(--radius-md);border:1px solid var(--c-border)}.guide-step-num{width:36px;height:36px;background:var(--c-primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:700;margin:0 auto 12px}.guide-step h4{font-size:15px;font-weight:600;margin-bottom:6px}.guide-step p{font-size:13px;color:var(--c-text-secondary);line-height:1.5}.guide-tips{background:var(--c-primary-light);border-radius:var(--radius-md);padding:24px 28px}.guide-tips h3{font-size:16px;font-weight:600;color:var(--c-primary);margin-bottom:12px}.guide-tips h3 i{margin-right:6px}.guide-tips ul{display:grid;grid-template-columns:1fr 1fr;gap:8px 24px}.guide-tips li{font-size:14px;color:var(--c-text);padding-left:18px;position:relative;line-height:1.6}.guide-tips li::before{content:'✓';position:absolute;left:0;color:var(--c-primary);font-weight:700}@media(max-width:1024px){.tool-grid{grid-template-columns:repeat(2,1fr)}.guide-steps{grid-template-columns:repeat(2,1fr)}}@media(max-width:768px){.cat-hero{padding:36px 0 44px}.cat-hero h1{font-size:24px}.cat-hero h1 span{display:block;margin-left:0;margin-top:4px;font-size:16px}.tool-grid{grid-template-columns:1fr;gap:12px}.guide-steps{grid-template-columns:1fr 1fr;gap:12px}.guide-tips ul{grid-template-columns:1fr}}