:root {--primary:#4F46E5;--primary-light:#6366F1;--primary-dark:#3730A3;--accent:#10B981;--accent-light:#34D399;--bg:#F8FAFC;--bg-card:#FFFFFF;--text:#1E293B;--text-secondary:#64748B;--text-muted:#94A3B8;--border:#E2E8F0;--shadow-sm:0 1px 2px rgba(0,0,0,0.05);--shadow:0 1px 3px rgba(0,0,0,0.1),0 1px 2px rgba(0,0,0,0.06);--shadow-md:0 4px 6px rgba(0,0,0,0.07),0 2px 4px rgba(0,0,0,0.06);--shadow-lg:0 10px 15px rgba(0,0,0,0.1),0 4px 6px rgba(0,0,0,0.05);--shadow-xl:0 20px 25px rgba(0,0,0,0.1),0 10px 10px rgba(0,0,0,0.04);--radius:12px;--radius-sm:8px;--radius-lg:16px;--transition:0.3s cubic-bezier(0.4,0,0.2,1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei","Helvetica Neue",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}.navbar{background:rgba(255,255,255,0.95);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:1000;padding:0 2rem}.nav-inner{max-width:1280px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;height:64px}.nav-logo{font-size:1.5rem;font-weight:800;color:var(--primary);text-decoration:none;display:flex;align-items:center;gap:0.5rem}.nav-logo .logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:10px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:1.2rem}.nav-links{display:flex;list-style:none;gap:0.25rem;align-items:center}.nav-links a{text-decoration:none;color:var(--text-secondary);font-weight:500;padding:0.5rem 1rem;border-radius:var(--radius-sm);transition:var(--transition);font-size:0.95rem}.nav-links a:hover{color:var(--primary);background:#EEF2FF}.nav-cta{background:var(--primary);color:#fff!important;padding:0.5rem 1.5rem!important;border-radius:var(--radius-sm);font-weight:600;transition:var(--transition)}.nav-cta:hover{background:var(--primary-dark)!important;transform:translateY(-1px);box-shadow:var(--shadow-md)}.hero{background:linear-gradient(135deg,#EEF2FF 0%,#E0E7FF 30%,#F0FDF4 70%,#ECFEFF 100%);padding:5rem 2rem;text-align:center;position:relative;overflow:hidden}.hero::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 30% 50%,rgba(79,70,229,0.06) 0%,transparent 50%),radial-gradient(circle at 70% 50%,rgba(16,185,129,0.06) 0%,transparent 50%);animation:heroGlow 8s ease-in-out infinite}@keyframes heroGlow{0%,100%{transform:translate(0,0)}50%{transform:translate(-2%,1%)}}.hero-inner{max-width:900px;margin:0 auto;position:relative;z-index:1}.hero-badge{display:inline-block;background:rgba(79,70,229,0.1);color:var(--primary);padding:0.35rem 1rem;border-radius:50px;font-size:0.875rem;font-weight:600;margin-bottom:1.5rem;border:1px solid rgba(79,70,229,0.2)}.hero h1{font-size:clamp(2rem,5vw,3.5rem);font-weight:900;line-height:1.2;margin-bottom:1.25rem;letter-spacing:-0.02em}.hero h1 .gradient-text{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.hero p{font-size:1.2rem;color:var(--text-secondary);max-width:650px;margin:0 auto 2.5rem;line-height:1.7}.hero-actions{display:flex;gap:1rem;justify-content:center;flex-wrap:wrap}.btn-primary{display:inline-flex;align-items:center;gap:0.5rem;background:var(--primary);color:#fff;padding:0.875rem 2rem;border-radius:var(--radius);font-weight:700;font-size:1.05rem;text-decoration:none;transition:var(--transition);box-shadow:0 4px 14px rgba(79,70,229,0.35)}.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(79,70,229,0.45)}.btn-secondary{display:inline-flex;align-items:center;gap:0.5rem;background:#fff;color:var(--text);padding:0.875rem 2rem;border-radius:var(--radius);font-weight:700;font-size:1.05rem;text-decoration:none;transition:var(--transition);border:2px solid var(--border)}.btn-secondary:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}.hero-stats{display:flex;justify-content:center;gap:3rem;margin-top:3rem;flex-wrap:wrap}.hero-stat{text-align:center}.hero-stat-num{font-size:2rem;font-weight:900;color:var(--primary);line-height:1}.hero-stat-label{font-size:0.85rem;color:var(--text-muted);margin-top:0.25rem}.section{padding:5rem 2rem;max-width:1280px;margin:0 auto}.section-header{text-align:center;margin-bottom:3rem}.section-header h2{font-size:2rem;font-weight:800;color:var(--text);margin-bottom:0.75rem;letter-spacing:-0.02em}.section-header p{color:var(--text-secondary);font-size:1.05rem;max-width:600px;margin:0 auto}.features-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.5rem}.feature-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:2rem;transition:var(--transition);position:relative;overflow:hidden}.feature-card::before{content:'';position:absolute;top:0;left:0;width:100%;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));opacity:0;transition:var(--transition)}.feature-card:hover{box-shadow:var(--shadow-xl);transform:translateY(-4px)}.feature-card:hover::before{opacity:1}.feature-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;font-size:1.5rem;margin-bottom:1.25rem}.fi-blue{background:#EEF2FF}.fi-green{background:#ECFDF5}.fi-purple{background:#F5F3FF}.fi-orange{background:#FFF7ED}.fi-cyan{background:#ECFEFF}.fi-rose{background:#FFF1F2}.feature-card h3{font-size:1.15rem;font-weight:700;margin-bottom:0.5rem}.feature-card p{font-size:0.9rem;color:var(--text-secondary);line-height:1.65}.comparison-section{background:linear-gradient(135deg,#F8FAFC 0%,#EEF2FF 100%)}.comparison-scroll{overflow-x:auto;margin:0 auto;max-width:1000px}.comparison-table{width:100%;border-collapse:separate;border-spacing:0;background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg)}.comparison-table thead th{background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;padding:1rem 1.25rem;text-align:center;font-weight:600;font-size:0.95rem}.comparison-table thead th:first-child{text-align:left;padding-left:1.75rem}.comparison-table tbody td{padding:0.9rem 1.25rem;text-align:center;border-bottom:1px solid var(--border);font-size:0.9rem;color:var(--text)}.comparison-table tbody td:first-child{text-align:left;padding-left:1.75rem;font-weight:600;color:var(--text)}.comparison-table tbody tr:last-child td{border-bottom:none}.comparison-table tbody tr:hover{background:#F8FAFF}.comparison-table .highlight-col{background:linear-gradient(180deg,rgba(79,70,229,0.04) 0%,rgba(79,70,229,0.01) 100%)}.check{color:var(--accent);font-weight:700;font-size:1.1rem}.cross{color:#EF4444}.dash{color:var(--text-muted)}.reviews-section{background:#fff}.reviews-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:1.5rem}.review-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.75rem;transition:var(--transition)}.review-card:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.review-stars{color:#F59E0B;font-size:1.1rem;margin-bottom:0.75rem;letter-spacing:2px}.review-text{font-size:0.95rem;color:var(--text);line-height:1.7;margin-bottom:1.25rem;font-style:italic}.review-author{display:flex;align-items:center;gap:0.75rem}.review-avatar{width:42px;height:42px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:1rem}.ra-1{background:linear-gradient(135deg,#6366F1,#8B5CF6)}.ra-2{background:linear-gradient(135deg,#10B981,#34D399)}.ra-3{background:linear-gradient(135deg,#F59E0B,#F97316)}.ra-4{background:linear-gradient(135deg,#EC4899,#F472B6)}.ra-5{background:linear-gradient(135deg,#06B6D4,#22D3EE)}.ra-6{background:linear-gradient(135deg,#8B5CF6,#A78BFA)}.review-author-name{font-weight:700;font-size:0.9rem}.review-author-role{font-size:0.8rem;color:var(--text-muted)}.trust-section{border-top:1px solid var(--border);border-bottom:1px solid var(--border);background:linear-gradient(135deg,var(--primary-dark),var(--primary));color:#fff;text-align:center;padding:3rem 2rem}.trust-section h3{font-size:1.5rem;font-weight:700;margin-bottom:0.5rem}.trust-section p{opacity:0.85;margin-bottom:1.5rem;font-size:0.95rem}.trust-badges{display:flex;justify-content:center;gap:2.5rem;flex-wrap:wrap}.trust-badge{display:flex;flex-direction:column;align-items:center;gap:0.35rem}.trust-badge-icon{font-size:2rem}.trust-badge-name{font-weight:600;font-size:0.9rem}.trust-badge-desc{font-size:0.75rem;opacity:0.7}.faq-list{max-width:800px;margin:0 auto}.faq-item{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);margin-bottom:0.75rem;overflow:hidden;transition:var(--transition)}.faq-item:hover{border-color:var(--primary-light)}.faq-q{padding:1.25rem;font-weight:700;cursor:pointer;display:flex;justify-content:space-between;align-items:center;font-size:1rem;color:var(--text)}.faq-arrow{width:24px;height:24px;display:flex;align-items:center;justify-content:center;transition:var(--transition);color:var(--text-muted);font-size:1.2rem}.faq-a{padding:0 1.25rem 1.25rem;font-size:0.93rem;color:var(--text-secondary);line-height:1.7;display:none}.faq-item.open .faq-a{display:block}.faq-item.open .faq-arrow{transform:rotate(180deg)}.articles-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(350px,1fr));gap:1.5rem}.article-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:var(--transition);display:flex;flex-direction:row}.article-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}.article-img{width:140px;min-height:140px;flex-shrink:0;display:flex;align-items:center;justify-content:center;font-size:2.5rem;position:relative;overflow:hidden}.ai-1{background:linear-gradient(135deg,#DBEAFE,#BFDBFE)}.ai-2{background:linear-gradient(135deg,#D1FAE5,#A7F3D0)}.ai-3{background:linear-gradient(135deg,#EDE9FE,#DDD6FE)}.ai-4{background:linear-gradient(135deg,#FEE2E2,#FECACA)}.ai-5{background:linear-gradient(135deg,#FFEDD5,#FED7AA)}.ai-6{background:linear-gradient(135deg,#CFFAFE,#A5F3FC)}.ai-7{background:linear-gradient(135deg,#FCE7F3,#FBCFE8)}.ai-8{background:linear-gradient(135deg,#E0E7FF,#C7D2FE)}.ai-9{background:linear-gradient(135deg,#D1FAE5,#6EE7B7)}.ai-10{background:linear-gradient(135deg,#FEF3C7,#FDE68A)}.ai-11{background:linear-gradient(135deg,#F3E8FF,#E9D5FF)}.ai-12{background:linear-gradient(135deg,#CCFBF1,#99F6E4)}.article-body{padding:1.25rem;display:flex;flex-direction:column;justify-content:center}.article-tag{display:inline-block;font-size:0.75rem;font-weight:600;padding:0.2rem 0.65rem;border-radius:50px;margin-bottom:0.5rem;width:fit-content}.tag-news{background:#EEF2FF;color:var(--primary)}.tag-guide{background:#ECFDF5;color:#059669}.tag-tips{background:#FFF7ED;color:#EA580C}.tag-review{background:#FDF2F8;color:#DB2777}.article-card h4{font-size:0.95rem;font-weight:700;margin-bottom:0.35rem;line-height:1.4;color:var(--text)}.article-card p{font-size:0.8rem;color:var(--text-secondary);line-height:1.5}.fade-up{opacity:0;transform:translateY(30px);transition:opacity 0.6s ease,transform 0.6s ease}.fade-up.visible{opacity:1;transform:translateY(0)}.footer{background:var(--text);color:#CBD5E1;padding:4rem 2rem 2rem}.footer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:2rem}.footer-col h4{color:#fff;font-weight:700;margin-bottom:1rem;font-size:1rem}.footer-col a{display:block;color:#94A3B8;text-decoration:none;margin-bottom:0.5rem;font-size:0.875rem;transition:var(--transition)}.footer-col a:hover{color:#fff}.footer-bottom{max-width:1280px;margin:2rem auto 0;padding-top:1.5rem;border-top:1px solid #334155;text-align:center;font-size:0.8rem;color:#64748B}@media (max-width:768px){.nav-links{display:none}.hero{padding:3rem 1.25rem}.hero-stats{gap:1.5rem}.section{padding:3rem 1.25rem}.article-card{flex-direction:column}.article-img{width:100%;height:120px}.comparison-table thead th,.comparison-table tbody td{padding:0.65rem 0.75rem;font-size:0.8rem}}