:root{--primary:#2563eb;--primary-light:#eff6ff;--text-dark:#1e293b;--text-muted:#64748b;--bg-page:#f8fafc;--border-color:#e2e8f0;--radius-sm:8px;--radius-md:12px;--radius-lg:16px;--shadow-sm:0 1px 3px 0 rgba(0,0,0,0.1);--shadow-md:0 4px 6px -1px rgba(0,0,0,0.05),0 2px 4px -1px rgba(0,0,0,0.03);--shadow-hover:0 10px 15px -3px rgba(37,99,235,0.1),0 4px 6px -4px rgba(37,99,235,0.05);--transition:all 0.2s ease-in-out}.bb-page{background-color:var(--bg-page);min-height:100vh;padding:4rem 1rem;color:var(--text-dark);font-family:system-ui,-apple-system,sans-serif}.bb-page .container{max-width:1100px;margin:0 auto}.bb-hero{text-align:center;margin-bottom:3rem}.bb-hero__tag{display:inline-flex;align-items:center;gap:.5rem;background-color:#ffffff;padding:.5rem 1rem;border-radius:9999px;font-size:.75rem;font-weight:600;color:var(--primary);box-shadow:var(--shadow-sm);border:1px solid var(--border-color);letter-spacing:.05em}.bb-hero__tag-dot{width:6px;height:6px;background-color:var(--primary);border-radius:50%;display:inline-block;animation:pulse 2s infinite}.bb-hero__title{font-size:2.5rem;font-weight:800;color:#0f172a;margin:1.25rem 0 .75rem;letter-spacing:-.02em}.bb-hero__sub{font-size:1.1rem;color:var(--text-muted);max-width:600px;margin:0 auto;line-height:1.6}.bb-search-wrap{position:relative;max-width:650px;margin:0 auto 2.5rem;box-shadow:var(--shadow-md);border-radius:var(--radius-md);background:#fff;transition:var(--transition);border:1px solid var(--border-color)}.bb-search-wrap:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-light);transform:translateY(-1px)}.bb-search-wrap i{position:absolute;left:1.25rem;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:1.1rem}.bb-search-input{width:100%;padding:1.1rem 1.25rem 1.1rem 3.2rem;border:none;border-radius:var(--radius-md);font-size:1rem;outline:none;color:var(--text-dark)}.bb-cats{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap;margin-bottom:2.5rem}.bb-cat-btn{display:flex;align-items:center;gap:.6rem;background-color:#ffffff;border:1px solid var(--border-color);padding:.65rem 1.25rem;border-radius:var(--radius-sm);font-size:.9rem;font-weight:500;color:var(--text-dark);cursor:pointer}.bb-cat-btn,.bb-cat-btn i{transition:var(--transition)}.bb-cat-btn i{color:var(--text-muted);font-size:.95rem}.bb-cat-btn:hover{background-color:#fafafa;border-color:#cbd5e1}.bb-cat-btn.active{background-color:var(--primary);color:#ffffff;border-color:var(--primary);box-shadow:0 4px 12px rgba(37,99,235,.2)}.bb-cat-btn.active i{color:#ffffff}.bb-cat-count{font-size:.75rem;background-color:#f1f5f9;color:var(--text-muted);padding:.15rem .5rem;border-radius:9999px;font-weight:600;transition:var(--transition)}.bb-cat-btn.active .bb-cat-count{background-color:rgba(255,255,255,.2);color:#ffffff}.bb-section-label{font-size:.85rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);font-weight:700;margin-bottom:1.25rem;padding-left:.25rem}.bb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem}.bb-card{background-color:#ffffff;border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;display:flex;flex-direction:column;justify-content:space-between;text-decoration:none;transition:var(--transition);box-shadow:var(--shadow-sm)}.bb-card:hover{transform:translateY(-4px);border-color:#bfdbfe;box-shadow:var(--shadow-hover)}.bb-card__main{display:flex;align-items:flex-start;gap:1rem}.bb-card__icon{background-color:var(--primary-light);color:var(--primary);width:44px;height:44px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-size:1.1rem;flex-shrink:0;transition:var(--transition)}.bb-card:hover .bb-card__icon{background-color:var(--primary);color:#ffffff}.bb-card__content{flex:1}.bb-card__title{font-size:1.05rem;font-weight:600;color:#0f172a;line-height:1.4;transition:var(--transition)}.bb-card:hover .bb-card__title{color:var(--primary)}.bb-card__description{font-size:.875rem;color:var(--text-muted);margin-top:.5rem;line-height:1.5}.bb-card__meta{margin-top:1.5rem;padding-top:1rem;border-top:1px solid #f1f5f9;display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-muted)}.bb-card__arrow{color:var(--text-muted);transition:var(--transition);margin-left:auto}.bb-card:hover .bb-card__arrow{color:var(--primary);transform:translateX(4px)}.bb-empty{grid-column:1/-1;text-align:center;padding:4rem 2rem;background:#ffffff;border-radius:var(--radius-lg);border:1px dashed #cbd5e1}.bb-empty i{font-size:2.5rem;color:#94a3b8;margin-bottom:1rem}.bb-empty__title{font-size:1.1rem;font-weight:600;color:#334155}.bb-empty__subtitle{font-size:.875rem;color:var(--text-muted);margin-top:.3rem}@keyframes pulse{0%,to{opacity:1}50%{opacity:.4}}@media (max-width:640px){.bb-page{padding:2rem 1rem}.bb-hero__title{font-size:2rem}.bb-cats{justify-content:flex-start;overflow-x:auto;padding-bottom:.5rem}.bb-cat-btn{flex-shrink:0}.bb-grid{grid-template-columns:1fr}}.bb-detail-page{background-color:var(--bg-page);min-height:100vh;padding:3rem 1rem 5rem;color:var(--text-dark);font-family:system-ui,-apple-system,sans-serif}.bb-detail-page .container{max-width:820px;margin:0 auto}.bb-detail-wrap{width:100%}.bb-breadcrumb{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-muted);margin-bottom:1.5rem;flex-wrap:wrap}.bb-breadcrumb a{color:var(--primary);text-decoration:none;font-weight:600;transition:var(--transition)}.bb-breadcrumb a:hover{color:#1d4ed8}.bb-breadcrumb i{font-size:.6rem;color:#cbd5e1}.bb-breadcrumb span{color:#475569;font-weight:600}.bb-detail-header{margin-bottom:2.5rem}.bb-detail-cat{display:inline-flex;align-items:center;gap:.4rem;font-size:.7rem;font-weight:800;text-transform:uppercase;letter-spacing:.05em;color:var(--primary);background-color:var(--primary-light);padding:.4rem .9rem;border-radius:9999px;margin-bottom:1rem}.bb-detail-title{font-size:2.25rem;font-weight:900;color:#0f172a;line-height:1.15;letter-spacing:-.02em;margin:0 0 1.1rem}.bb-detail-meta{display:flex;gap:1.25rem;flex-wrap:wrap}.bb-detail-meta span{display:inline-flex;align-items:center;gap:.45rem;font-size:.85rem;font-weight:600;color:var(--text-muted)}.bb-detail-meta i{color:#cbd5e1}.bb-steps{display:flex;flex-direction:column;gap:1rem;margin-bottom:2rem}.bb-step{display:flex;gap:1.1rem;background-color:#ffffff;border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);transition:var(--transition)}.bb-step:hover{box-shadow:var(--shadow-hover);transform:translateY(-2px);border-color:#bfdbfe}.bb-step__num{flex-shrink:0;width:36px;height:36px;border-radius:var(--radius-md);background:linear-gradient(135deg,#2563eb,#4f46e5);color:#fff;font-weight:800;font-size:.95rem;display:flex;align-items:center;justify-content:center}.bb-step__title{font-size:1.05rem;font-weight:700;color:#1e293b;margin-bottom:.4rem}.bb-step__desc{font-size:.9rem;line-height:1.65;color:var(--text-muted)}.bb-note{display:flex;align-items:flex-start;gap:.75rem;background-color:#fffbeb;border:1px solid #fde68a;border-radius:var(--radius-lg);padding:1.1rem 1.25rem;margin-bottom:2rem}.bb-note i{color:#d97706;font-size:1rem;margin-top:.15rem;flex-shrink:0}.bb-note span{font-size:.875rem;line-height:1.6;color:#78350f}.bb-note strong{font-weight:800;color:#92400e}.bb-back-btn{display:inline-flex;align-items:center;gap:.5rem;background-color:#ffffff;border:1px solid var(--border-color);color:var(--text-dark);font-size:.875rem;font-weight:600;text-decoration:none;padding:.75rem 1.4rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:var(--transition)}.bb-back-btn:hover{background-color:var(--primary);border-color:var(--primary);color:#fff;box-shadow:0 4px 12px rgba(37,99,235,.2)}.bb-back-btn i{transition:var(--transition)}.bb-back-btn:hover i{transform:translateX(-3px)}@media (max-width:640px){.bb-detail-page{padding:2rem 1rem 4rem}.bb-detail-title{font-size:1.65rem}.bb-step{padding:1.1rem;gap:.9rem}}