*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}:root{--brand-primary:#1a3a5c;--brand-secondary:#e67e22;--brand-accent:#3498db;--brand-light:#f0f4f8;--brand-dark:#0f1f2e;--glass-bg:rgba(255,255,255,0.15);--glass-border:rgba(255,255,255,0.2);--shadow-sm:0 2px 8px rgba(0,0,0,0.06);--shadow-md:0 8px 24px rgba(0,0,0,0.1);--shadow-lg:0 16px 48px rgba(0,0,0,0.15);--radius-sm:8px;--radius-md:16px;--radius-lg:24px;--transition:0.3s cubic-bezier(0.4,0,0.2,1);--font-sans:'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;--bg-page:#ffffff;--text-primary:#1a1a2e;--text-secondary:#4a4a6a;--card-bg:#ffffff;--border-color:#e2e8f0;--hero-overlay:linear-gradient(135deg,rgba(26,58,92,0.85) 0%,rgba(15,31,46,0.7) 100%)}html{scroll-behavior:smooth}body{font-family:var(--font-sans);background:var(--bg-page);color:var(--text-primary);line-height:1.7;overflow-x:hidden}.dark-mode{--bg-page:#0f1f2e;--text-primary:#e2e8f0;--text-secondary:#a0aec0;--card-bg:#1a2a3e;--border-color:#2d3a4e;--glass-bg:rgba(15,31,46,0.6);--hero-overlay:linear-gradient(135deg,rgba(15,31,46,0.9) 0%,rgba(26,58,92,0.7) 100%)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.section{padding:80px 0}@media(max-width:768px){.section{padding:48px 0}}.glass{background:var(--glass-bg);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--glass-border)}.card{background:var(--card-bg);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:transform var(--transition),box-shadow var(--transition);padding:24px}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:50px;font-weight:600;font-size:1rem;border:none;cursor:pointer;transition:all var(--transition);text-decoration:none}.btn-primary{background:var(--brand-secondary);color:#fff}.btn-primary:hover{background:#d35400;transform:translateY(-2px);box-shadow:0 8px 20px rgba(230,126,34,0.35)}.btn-outline{background:transparent;border:2px solid var(--brand-secondary);color:var(--brand-secondary)}.btn-outline:hover{background:var(--brand-secondary);color:#fff}.section-title{font-size:2.2rem;font-weight:700;margin-bottom:16px;color:var(--text-primary);position:relative;display:inline-block}.section-title::after{content:'';display:block;width:60px;height:4px;background:var(--brand-secondary);border-radius:4px;margin-top:8px}.section-subtitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:48px;max-width:600px}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:32px}.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}@media(max-width:992px){.grid-4{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:1fr 1fr}}@media(max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}header{position:fixed;top:0;left:0;width:100%;z-index:1000;background:rgba(255,255,255,0.9);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid var(--border-color);transition:background var(--transition)}.dark-mode header{background:rgba(15,31,46,0.9)}.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px}.logo{font-size:1.6rem;font-weight:800;color:var(--brand-primary);text-decoration:none;display:flex;align-items:center;gap:10px}.logo svg{width:36px;height:36px}.dark-mode .logo{color:#e2e8f0}nav{display:flex;align-items:center;gap:32px}nav a{color:var(--text-secondary);text-decoration:none;font-weight:500;font-size:0.95rem;transition:color var(--transition);position:relative}nav a::after{content:'';position:absolute;bottom:-4px;left:0;width:0;height:2px;background:var(--brand-secondary);transition:width var(--transition)}nav a:hover{color:var(--brand-secondary)}nav a:hover::after{width:100%}nav a.active{color:var(--brand-secondary)}nav a.active::after{width:100%}.menu-toggle{display:none;background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-primary);padding:8px}.dark-toggle{background:none;border:none;font-size:1.2rem;cursor:pointer;color:var(--text-primary);padding:8px;margin-left:16px;transition:transform var(--transition)}.dark-toggle:hover{transform:rotate(20deg)}@media(max-width:768px){.menu-toggle{display:block}nav{position:fixed;top:72px;left:0;width:100%;background:var(--card-bg);flex-direction:column;padding:24px;gap:16px;box-shadow:var(--shadow-lg);transform:translateY(-120%);opacity:0;transition:all var(--transition);border-bottom:2px solid var(--border-color)}nav.open{transform:translateY(0);opacity:1}nav a{font-size:1.1rem}}hero{display:block;padding-top:72px}.hero-slider{position:relative;height:600px;overflow:hidden;background:var(--brand-primary)}.hero-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity 0.8s ease;background:var(--hero-overlay);padding:0 24px}.hero-slide.active{opacity:1}.hero-content{text-align:center;max-width:800px;color:#fff;z-index:2}.hero-content h1{font-size:3.2rem;font-weight:800;margin-bottom:20px;line-height:1.2;text-shadow:0 4px 12px rgba(0,0,0,0.3)}.hero-content p{font-size:1.2rem;margin-bottom:32px;opacity:0.9;line-height:1.8}.hero-content .btn{margin:0 8px}.slider-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:12px;z-index:5}.slider-dots button{width:12px;height:12px;border-radius:50%;border:none;background:rgba(255,255,255,0.4);cursor:pointer;transition:all var(--transition)}.slider-dots button.active{background:#fff;transform:scale(1.3)}@media(max-width:768px){.hero-slider{height:420px}.hero-content h1{font-size:2rem}.hero-content p{font-size:1rem}}breadcrumb{display:block;padding:16px 0;background:var(--brand-light)}.dark-mode breadcrumb{background:var(--brand-dark)}.breadcrumb-list{display:flex;gap:8px;flex-wrap:wrap;font-size:0.9rem;color:var(--text-secondary)}.breadcrumb-list a{color:var(--brand-secondary);text-decoration:none}.breadcrumb-list span{color:var(--text-secondary)}[data-scroll]{opacity:0;transform:translateY(40px);transition:opacity 0.7s ease,transform 0.7s ease}[data-scroll].visible{opacity:1;transform:translateY(0)}counter{display:flex;gap:32px;flex-wrap:wrap;justify-content:center}.counter-item{text-align:center;padding:24px 32px;background:var(--card-bg);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);min-width:160px}.counter-item .number{font-size:2.8rem;font-weight:800;color:var(--brand-secondary);display:block}.counter-item .label{font-size:0.95rem;color:var(--text-secondary);margin-top:8px}faq-item{display:block;margin-bottom:12px;border:1px solid var(--border-color);border-radius:var(--radius-sm);overflow:hidden;background:var(--card-bg)}faq-item button{width:100%;padding:16px 20px;background:none;border:none;text-align:left;font-size:1rem;font-weight:600;color:var(--text-primary);cursor:pointer;display:flex;justify-content:space-between;align-items:center;transition:background var(--transition)}faq-item button:hover{background:rgba(230,126,34,0.05)}faq-item .faq-icon{transition:transform var(--transition)}faq-item.open .faq-icon{transform:rotate(180deg)}faq-item .faq-answer{padding:0 20px 16px;color:var(--text-secondary);line-height:1.8;display:none}faq-item.open .faq-answer{display:block}#backToTop{position:fixed;bottom:32px;right:32px;width:48px;height:48px;border-radius:50%;background:var(--brand-secondary);color:#fff;border:none;font-size:1.2rem;cursor:pointer;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:all var(--transition);z-index:999}#backToTop.show{opacity:1;visibility:visible}#backToTop:hover{transform:translateY(-4px);background:#d35400}search-bar{display:block;max-width:500px;margin:0 auto 48px}.search-input{width:100%;padding:14px 20px;border:2px solid var(--border-color);border-radius:50px;font-size:1rem;background:var(--card-bg);color:var(--text-primary);transition:border var(--transition)}.search-input:focus{outline:none;border-color:var(--brand-secondary)}footer{background:var(--brand-dark);color:#a0aec0;padding:64px 0 32px}.dark-mode footer{background:#0a1520}.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:40px;margin-bottom:40px}@media(max-width:768px){.footer-grid{grid-template-columns:1fr 1fr}}.footer-col h4{color:#fff;font-size:1.1rem;margin-bottom:16px}.footer-col a{color:#a0aec0;text-decoration:none;display:block;margin-bottom:8px;transition:color var(--transition)}.footer-col a:hover{color:var(--brand-secondary)}.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:16px;font-size:0.9rem}.footer-bottom a{color:var(--brand-secondary);text-decoration:none}svg.icon{width:24px;height:24px;fill:currentColor}.text-center{text-align:center}.mb-16{margin-bottom:16px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}.mb-48{margin-bottom:48px}.mt-16{margin-top:16px}