:root{--beijing-primary:#d97706;--beijing-primary-dark:#b45309;--beijing-primary-light:#fde68a;--beijing-accent:#f59e0b;--beijing-gradient:linear-gradient(135deg,#d97706,#f59e0b);--beijing-gradient-hero:linear-gradient(135deg,#1a1208 0,#3d2b1a 50%,#d97706 100%);--beijing-bg:#0f0b08;--beijing-bg-card:rgba(255,255,255,0.04);--beijing-bg-card-hover:rgba(217,119,6,0.12);--beijing-border:rgba(217,119,6,0.25);--beijing-shadow:0 20px 60px rgba(217,119,6,0.15);--radius-sm:10px;--primary:#2563eb;--primary-dark:#1d4ed8;--primary-light:#dbeafe;--secondary:#4f46e5;--light:#f8fafc;--dark:#0f172a;--gray:#64748b;--success:#10b981;--border:#e2e8f0;--shadow:0 4px 6px rgba(0,0,0,0.1)}.beijing-header{background:var(--beijing-gradient-hero);color:#fff;padding:80px 0 60px;text-align:center;position:relative;overflow:hidden}.beijing-header::before{content:'';position:absolute;top:-100px;right:-100px;width:300px;height:300px;background:rgba(245,158,11,0.12);border-radius:50%}.beijing-header::after{content:'';position:absolute;bottom:-80px;left:-80px;width:250px;height:250px;background:rgba(245,158,11,0.08);border-radius:50%}.beijing-header h1{position:relative;z-index:2;font-weight:800;background:linear-gradient(135deg,#fff 40%,#fbbf24 80%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.beijing-header p{position:relative;z-index:2;color:rgba(255,255,255,0.9)}.beijing-header p strong{color:#fbbf24}.breadcrumb{padding:14px 0;background:rgba(255,255,255,0.02);border-bottom:1px solid rgba(255,255,255,0.04)}.breadcrumb .module-container{display:flex;align-items:center;flex-wrap:wrap;gap:6px 8px;max-width:1200px;margin:0 auto;padding:0 24px}.breadcrumb a{color:var(--text-muted,#6f8f9a);text-decoration:none;font-size:.9rem;transition:color .3s}.breadcrumb a:hover{color:var(--beijing-primary)}.breadcrumb .breadcrumb-separator{color:var(--text-muted,#6f8f9a);font-size:.8rem}.breadcrumb .current{color:var(--text-secondary,#b0c8db);font-size:.9rem}.section-title{text-align:center;margin-bottom:40px}.section-title h2{font-size:clamp(1.8rem,3vw,2.4rem);font-weight:700;letter-spacing:-0.01em;background:linear-gradient(135deg,#fff 50%,#fbbf24);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:10px}.section-title p{color:var(--text-secondary,#b0c8db);font-size:1.05rem;max-width:700px;margin:0 auto}.section-title p strong{color:var(--beijing-primary-light)}.why-choose-solution{padding:60px 0;background:var(--bg-secondary,#16273f)}.advantage-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.advantage-item{background:var(--bg-card,rgba(255,255,255,0.04));backdrop-filter:blur(4px);border:1px solid var(--border-card,rgba(255,255,255,0.06));border-radius:var(--radius-card,20px);padding:28px 22px;text-align:center;transition:background .3s,transform .3s;box-shadow:var(--shadow-card,0 20px 60px rgba(0,0,0,0.5))}.advantage-item:hover{background:var(--bg-card-hover,rgba(255,255,255,0.08));transform:translateY(-4px)}.advantage-item .advantage-icon{font-size:36px;color:var(--beijing-accent);margin-bottom:12px}.advantage-item h3{font-size:1.1rem;color:#fff;margin-bottom:8px}.advantage-item p{font-size:.9rem;color:var(--text-secondary,#b0c8db);margin:0}@media(max-width:768px){.advantage-grid{grid-template-columns:1fr 1fr}}@media(max-width:480px){.advantage-grid{grid-template-columns:1fr}}.service-details{padding:60px 0;background:var(--bg-primary,#0f1b2f)}.service-module{margin-bottom:50px}.service-module:last-child{margin-bottom:0}.module-banner{position:relative;padding:40px 30px;border-radius:var(--radius-card,20px);background:var(--bg-secondary,#16273f);border:1px solid rgba(255,255,255,0.06);margin-bottom:28px;background-size:cover;background-position:center;min-height:120px;display:flex;align-items:center}.module-banner .banner-overlay{position:relative;z-index:2;width:100%}.module-banner .banner-text{background:rgba(0,0,0,0.55);padding:20px 24px;border-radius:var(--radius-sm,10px);backdrop-filter:blur(2px);display:inline-block;max-width:80%}.module-banner .banner-text h3{font-size:1.6rem;color:#fff;margin-bottom:4px}.module-banner .banner-text h3 i{color:var(--beijing-accent);margin-right:10px}.module-banner .banner-text p{font-size:1rem;color:#fff;margin:0;opacity:.95}@media(max-width:768px){.module-banner .banner-text{max-width:100%;padding:16px 18px}.module-banner .banner-text h3{font-size:1.3rem}}@media(max-width:480px){.module-banner .banner-text h3{font-size:1.1rem}}.service-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:20px}.service-card{background:var(--bg-card,rgba(255,255,255,0.04));border:1px solid var(--border-card,rgba(255,255,255,0.06));border-radius:var(--radius-sm,10px);padding:22px 20px;transition:background .3s,transform .3s}.service-card:hover{background:var(--bg-card-hover,rgba(255,255,255,0.08));transform:translateY(-3px)}.service-card .card-icon{font-size:28px;color:var(--beijing-accent);margin-bottom:10px}.service-card h3{font-size:1.1rem;color:#fff;margin-bottom:8px}.service-card ul{list-style:none;padding:0;margin:0 0 12px 0}.service-card ul li{font-size:.9rem;color:var(--text-secondary,#b0c8db);padding:4px 0 4px 22px;position:relative}.service-card ul li::before{content:'✓';position:absolute;left:0;color:var(--beijing-accent);font-weight:700}.service-card .feature-link{display:inline-block;color:var(--beijing-accent);font-weight:500;font-size:.9rem;text-decoration:none;border-bottom:1px solid transparent;transition:border-color .3s}.service-card .feature-link:hover{border-bottom-color:var(--beijing-accent)}.application-scenes{padding:60px 0;background:var(--bg-secondary,#16273f)}.scenes-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.scene-card{background:var(--bg-card,rgba(255,255,255,0.04));border:1px solid var(--border-card,rgba(255,255,255,0.06));border-radius:var(--radius-sm,10px);padding:24px 18px;text-align:center;transition:background .3s,transform .3s}.scene-card:hover{background:var(--bg-card-hover,rgba(255,255,255,0.08));transform:translateY(-3px)}.scene-card i{font-size:32px;color:var(--beijing-accent);margin-bottom:10px}.scene-card h3{color:#fff;font-size:1.05rem;margin-bottom:4px}.scene-card p{font-size:.88rem;color:var(--text-secondary,#b0c8db);margin:0}@media(max-width:768px){.scenes-grid{grid-template-columns:1fr 1fr}}@media(max-width:480px){.scenes-grid{grid-template-columns:1fr}}.case-studies{padding:60px 0;background:var(--bg-primary,#0f1b2f)}.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.case-card{background:var(--bg-card,rgba(255,255,255,0.04));border:1px solid var(--border-card,rgba(255,255,255,0.06));border-radius:var(--radius-card,20px);overflow:hidden;transition:background .3s,transform .3s}.case-card:hover{background:var(--bg-card-hover,rgba(255,255,255,0.08));transform:translateY(-4px)}.case-img{height:200px;background-size:cover;background-position:center}.case-content{padding:20px 18px}.case-content h3{color:#fff;font-size:1.05rem;margin-bottom:4px}.case-content p{font-size:.9rem;color:var(--text-secondary,#b0c8db);margin-bottom:12px}.case-stats{display:flex;gap:20px;border-top:1px solid rgba(255,255,255,0.06);padding-top:12px}.case-stats .stat .number{font-weight:700;color:var(--beijing-accent)}.case-stats .stat .label{font-size:.8rem;color:var(--text-muted,#5f7e96)}@media(max-width:768px){.case-grid{grid-template-columns:1fr 1fr}}@media(max-width:480px){.case-grid{grid-template-columns:1fr}}.cta-section{padding:60px 0;background:var(--beijing-gradient);color:white;text-align:center;border-top:1px solid rgba(255,255,255,0.04);border-bottom:1px solid rgba(255,255,255,0.04)}.cta-content{max-width:800px;margin:0 auto}.cta-content h2{font-size:clamp(1.8rem,2.8vw,2.4rem);font-weight:700;color:#fff;margin-bottom:10px}.cta-content p{font-size:1.05rem;opacity:.9;margin-bottom:20px}.cta-btn{display:inline-block;background:#fff;color:var(--beijing-primary-dark);padding:14px 44px;border-radius:60px;font-weight:600;font-size:1rem;border:0;cursor:pointer;transition:transform .3s,box-shadow .3s;box-shadow:0 6px 20px rgba(0,0,0,0.2)}.cta-btn:hover{transform:scale(1.04);box-shadow:0 8px 28px rgba(0,0,0,0.3)}.keyword-nav-section{padding:40px 0;background:var(--bg-secondary,#16273f);border-top:1px solid rgba(255,255,255,0.04)}.keyword-nav-header{text-align:center;margin-bottom:20px}.keyword-nav-header h3{color:#fff;font-size:1.2rem}.keyword-nav-header p{color:var(--text-muted,#5f7e96);font-size:.95rem}.keyword-nav-list{display:flex;flex-wrap:wrap;justify-content:center;gap:12px 18px}.keyword-item{color:var(--text-secondary,#b0c8db);text-decoration:none;font-size:.9rem;border-bottom:1px solid transparent;transition:border-color .3s,color .3s}.keyword-item:hover{color:var(--beijing-accent);border-bottom-color:var(--beijing-accent)}.keyword-item.primary{color:#fff;font-weight:600;font-size:.95rem}.keyword-item.primary:hover{color:var(--beijing-accent)}@media(max-width:768px){.beijing-header{padding:60px 0 30px}.why-choose-solution,.service-details,.application-scenes,.case-studies,.cta-section{padding:40px 0}.module-banner{padding:28px 20px}.module-banner .banner-text h3{font-size:1.3rem}}@media(max-width:480px){.beijing-header h1{font-size:1.8rem}.module-banner .banner-text h3{font-size:1.1rem}}