:root{--primary-cyan:#06b6d4;--primary-blue:#3b82f6;--primary-deep:#1e3a8a;--bg-base:#f8fafc;--bg-surface:#ffffff;--bg-elevated:#f1f5f9;--text-primary:#0f172a;--text-secondary:#334155;--text-muted:#64748b;--success:#10b981;--danger:#ef4444;--warning:#f59e0b;--glass-bg:rgba(255,255,255,0.72);--glass-border:rgba(148,163,184,0.25);--space-xs:0.5rem;--space-sm:1rem;--space-md:1.5rem;--space-lg:2.5rem;--space-xl:4rem;--space-2xl:6rem;--font-body:-apple-system,BlinkMacSystemFont,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;--transition-fast:150ms ease;--transition-base:300ms ease;--transition-slow:500ms ease;--radius-sm:0.5rem;--radius-md:0.75rem;--radius-lg:1rem;--radius-xl:1.5rem}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}body{font-family:var(--font-body);font-size:16px;font-weight:400;line-height:1.75;color:var(--text-secondary);background-color:var(--bg-base);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;background:none}ul,ol{list-style:none}.container{width:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-md)}@media (min-width:768px){.container{padding:0 var(--space-lg)}}.section-tag{display:inline-block;font-size:0.875rem;font-weight:600;letter-spacing:0.1em;text-transform:uppercase;color:var(--primary-cyan);margin-bottom:var(--space-sm);padding:0.25rem 0.75rem;border-radius:var(--radius-sm);background:linear-gradient(135deg,rgba(6,182,212,0.15),rgba(59,130,246,0.1));border:1px solid rgba(6,182,212,0.2)}.section-title{font-size:clamp(1.75rem,4vw,3rem);font-weight:700;line-height:1.2;color:var(--text-primary);margin-bottom:var(--space-md)}.section-desc{font-size:1.0625rem;color:var(--text-muted);max-width:640px;line-height:1.8}.reveal{opacity:0;transform:translateY(40px);transition:opacity 0.8s cubic-bezier(0.16,1,0.3,1),transform 0.8s cubic-bezier(0.16,1,0.3,1)}.reveal.active{opacity:1;transform:translateY(0)}#navbar{position:fixed;top:0;left:0;width:100%;z-index:50;transition:all 0.3s ease;height:72px;border-bottom:1px solid transparent}#navbar.scrolled{background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom-color:var(--glass-border);box-shadow:0 4px 24px rgba(0,0,0,0.2)}.nav-container{display:flex;align-items:center;justify-content:space-between;height:100%;max-width:1200px;margin:0 auto;padding:0 var(--space-md)}@media (min-width:768px){.nav-container{padding:0 var(--space-lg)}}.nav-logo{display:flex;align-items:center;gap:0.625rem;z-index:60}.logo-icon{width:36px;height:36px;color:var(--primary-cyan);flex-shrink:0}.logo-text{font-size:1.25rem;font-weight:700;color:var(--text-primary);white-space:nowrap;letter-spacing:-0.02em}.nav-menu{display:none;align-items:center;gap:var(--space-lg)}@media (min-width:768px){.nav-menu{display:flex}}.nav-link{position:relative;font-size:0.9375rem;font-weight:500;color:var(--text-secondary);padding:0.5rem 0;transition:color var(--transition-base)}.nav-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:2px;background:linear-gradient(90deg,var(--primary-cyan),var(--primary-blue));border-radius:2px;transition:width var(--transition-base)}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.nav-link:hover::after,.nav-link.active::after{width:100%}.menu-toggle{display:flex;flex-direction:column;justify-content:center;align-items:center;width:44px;height:44px;gap:5px;z-index:60;position:relative}@media (min-width:768px){.menu-toggle{display:none}}.hamburger-line{display:block;width:24px;height:2px;background:var(--text-primary);border-radius:2px;transition:transform var(--transition-base),opacity var(--transition-base)}.menu-toggle.active .hamburger-line:nth-child(1){transform:translateY(7px) rotate(45deg)}.menu-toggle.active .hamburger-line:nth-child(2){opacity:0}.menu-toggle.active .hamburger-line:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.mobile-menu{position:fixed;inset:0;background:rgba(248,250,252,0.96);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);display:flex;align-items:center;justify-content:center;opacity:0;pointer-events:none;transition:opacity var(--transition-base);z-index:50}.mobile-menu.open{opacity:1;pointer-events:auto}.mobile-menu-list{display:flex;flex-direction:column;align-items:center;gap:var(--space-lg)}.mobile-nav-link{font-size:1.5rem;font-weight:600;color:var(--text-secondary);transition:color var(--transition-base),transform var(--transition-base)}.mobile-nav-link:hover{color:var(--primary-cyan);transform:scale(1.05)}.hero-section{position:relative;width:100%;min-height:100vh;display:flex;align-items:center;justify-content:center;overflow:hidden;background:linear-gradient(180deg,#eef2ff 0%,#f8fafc 50%,#ffffff 100%)}.hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:1}.hero-overlay{position:absolute;inset:0;background:radial-gradient(ellipse at center,transparent 0%,var(--bg-base) 85%);z-index:2;pointer-events:none}.hero-content{position:relative;z-index:3;text-align:center;padding:var(--space-xl) var(--space-md);max-width:900px}.hero-title{margin-bottom:var(--space-md)}.hero-title-main{display:block;font-size:clamp(2.5rem,7vw,5rem);font-weight:700;line-height:1.1;letter-spacing:-0.03em;background:linear-gradient(135deg,var(--text-primary) 0%,var(--primary-cyan) 50%,var(--primary-blue) 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;animation:shimmer 3s ease-in-out infinite;background-size:200% auto}@keyframes shimmer{0%,100%{background-position:0% center}50%{background-position:100% center}}.hero-subtitle{font-size:clamp(1.0625rem,2.5vw,1.375rem);font-weight:400;color:var(--text-muted);margin-bottom:var(--space-xl);max-width:560px;margin-left:auto;margin-right:auto;line-height:1.7}.hero-cta{display:flex;flex-wrap:wrap;gap:var(--space-md);justify-content:center;align-items:center}.btn{display:inline-flex;align-items:center;justify-content:center;padding:0.875rem 2rem;font-size:1rem;font-weight:600;border-radius:var(--radius-md);transition:transform var(--transition-fast),box-shadow var(--transition-base),background var(--transition-base);min-height:48px;min-width:140px}.btn:hover{transform:translateY(-2px)}.btn:active{transform:translateY(0)}.btn-primary{background:linear-gradient(135deg,var(--primary-cyan),var(--primary-blue));color:#ffffff;box-shadow:0 4px 20px rgba(6,182,212,0.3)}.btn-primary:hover{box-shadow:0 6px 28px rgba(6,182,212,0.45)}.btn-secondary{background:transparent;color:var(--text-secondary);border:1.5px solid rgba(100,116,139,0.45);backdrop-filter:blur(8px)}.btn-secondary:hover{border-color:var(--primary-cyan);color:var(--text-primary);background:rgba(6,182,212,0.08)}.scroll-indicator{position:absolute;bottom:var(--space-xl);left:50%;transform:translateX(-50%);z-index:3;display:flex;flex-direction:column;align-items:center;gap:0.5rem;color:var(--text-muted);transition:color var(--transition-base);animation:bounce 2s ease-in-out infinite}.scroll-indicator:hover{color:var(--primary-cyan)}.scroll-arrow{display:block;width:24px;height:24px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);border-radius:2px}@keyframes bounce{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(10px)}}.about-section{padding:var(--space-2xl) 0;position:relative;background:var(--bg-surface)}.about-section::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--glass-border),transparent)}.about-grid{display:grid;grid-template-columns:1fr;gap:var(--space-xl);align-items:center}@media (min-width:1024px){.about-grid{grid-template-columns:1fr 1fr;gap:var(--space-2xl)}}.about-text .section-desc{margin-bottom:var(--space-md)}.stats-row{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-md);margin-top:var(--space-xl);padding-top:var(--space-xl);border-top:1px solid var(--glass-border)}.stat-item{text-align:center}.stat-number,.stat-label{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:700;color:var(--primary-cyan);line-height:1}.stat-suffix{display:block;font-size:0.8125rem;color:var(--text-muted);margin-top:0.5rem;font-weight:400}.about-visual{position:relative}.about-image-wrapper{position:relative;border-radius:var(--radius-lg);overflow:hidden}.about-image{width:100%;aspect-ratio:6 / 5;object-fit:cover;border-radius:var(--radius-lg)}.about-image-wrapper::after{content:'';position:absolute;inset:0;border-radius:var(--radius-lg);border:1px solid var(--glass-border);pointer-events:none}.glow-orb{position:absolute;border-radius:50%;filter:blur(60px);pointer-events:none;z-index:-1}.glow-orb-1{width:200px;height:200px;background:rgba(6,182,212,0.2);top:-40px;right:-40px}.glow-orb-2{width:160px;height:160px;background:rgba(59,130,246,0.15);bottom:-30px;left:-30px}.glow-orb-3{width:220px;height:220px;background:rgba(6,182,212,0.18);top:-50px;left:-50px}.services-section{padding:var(--space-2xl) 0;position:relative;background:var(--bg-base)}.services-section::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--glass-border),transparent)}.section-header{text-align:center;margin-bottom:var(--space-2xl)}.section-header .section-desc{margin:0 auto}.services-grid{display:grid;grid-template-columns:1fr;gap:var(--space-lg)}@media (min-width:640px){.services-grid{grid-template-columns:repeat(2,1fr)}}@media (min-width:1024px){.services-grid{grid-template-columns:repeat(3,1fr)}}.service-card{position:relative;border-radius:var(--radius-lg);background:var(--bg-elevated);border:1px solid var(--glass-border);overflow:hidden;transition:transform var(--transition-base),box-shadow var(--transition-base),border-color var(--transition-base)}.service-card:hover{transform:translateY(-8px);border-color:rgba(6,182,212,0.3);box-shadow:0 20px 48px rgba(0,0,0,0.25),0 0 24px rgba(6,182,212,0.1)}.service-card-accent{position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary-cyan),var(--primary-blue));opacity:0;transform:scaleX(0);transform-origin:left;transition:opacity var(--transition-base),transform var(--transition-base)}.service-card:hover .service-card-accent{opacity:1;transform:scaleX(1)}.service-card-inner{padding:var(--space-lg)}.service-icon{width:56px;height:56px;color:var(--primary-cyan);margin-bottom:var(--space-md);background:rgba(6,182,212,0.12);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;padding:0.75rem;transition:background var(--transition-base),color var(--transition-base)}.service-card:hover .service-icon{background:rgba(6,182,212,0.15);color:var(--primary-blue)}.service-title{font-size:1.25rem;font-weight:600;color:var(--text-primary);margin-bottom:0.75rem}.service-desc{font-size:0.9375rem;color:var(--text-muted);line-height:1.7}.contact-section{padding:var(--space-2xl) 0;position:relative;background:var(--bg-surface)}.contact-section::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--glass-border),transparent)}.contact-grid{display:grid;grid-template-columns:1fr;gap:var(--space-xl);align-items:center}@media (min-width:1024px){.contact-grid{grid-template-columns:1fr 1fr;gap:var(--space-2xl)}}.contact-info .section-desc{margin-bottom:var(--space-xl)}.contact-details{display:flex;flex-direction:column;gap:var(--space-lg)}.contact-item{display:flex;align-items:flex-start;gap:var(--space-md)}.contact-icon{width:48px;height:48px;flex-shrink:0;color:var(--primary-cyan);background:rgba(6,182,212,0.12);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;padding:0.625rem;border:1px solid rgba(6,182,212,0.15)}.contact-label{display:block;font-size:0.8125rem;color:var(--text-muted);margin-bottom:0.25rem;font-weight:500}.contact-value{display:block;font-size:1rem;color:var(--text-primary);font-weight:500}.contact-visual{position:relative}.contact-image-wrapper{position:relative;border-radius:var(--radius-lg);overflow:hidden}.contact-image{width:100%;aspect-ratio:6 / 5;object-fit:cover;border-radius:var(--radius-lg)}.contact-image-wrapper::after{content:'';position:absolute;inset:0;border-radius:var(--radius-lg);border:1px solid var(--glass-border);pointer-events:none}.footer{background:var(--bg-base);padding:var(--space-2xl) 0 var(--space-xl);position:relative}.footer::before{content:'';position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--glass-border),transparent)}.footer-top{display:grid;grid-template-columns:1fr;gap:var(--space-xl)}@media (min-width:640px){.footer-top{grid-template-columns:2fr 1fr 1fr}}.footer-logo{display:flex;align-items:center;gap:0.625rem;margin-bottom:var(--space-md);color:var(--text-primary);font-size:1.125rem;font-weight:700}.footer-logo .logo-icon{width:32px;height:32px;color:var(--primary-cyan)}.footer-desc{font-size:0.9375rem;color:var(--text-muted);line-height:1.7;max-width:320px}.footer-links h4{font-size:1rem;font-weight:600;color:var(--text-primary);margin-bottom:var(--space-md)}.footer-links ul{display:flex;flex-direction:column;gap:0.625rem}.footer-links a{font-size:0.9375rem;color:var(--text-muted);transition:color var(--transition-fast),transform var(--transition-fast);display:inline-block}.footer-links a:hover{color:var(--primary-cyan);transform:translateX(4px)}.footer-divider{height:1px;background:var(--glass-border);margin:var(--space-xl) 0}.footer-bottom{display:flex;flex-direction:column;align-items:center;gap:var(--space-sm);text-align:center}@media (min-width:640px){.footer-bottom{flex-direction:row;justify-content:space-between}}.footer-copyright{font-size:0.875rem;color:var(--text-muted)}.footer-beian{font-size:0.875rem}.footer-beian a{color:#64748b;transition:color var(--transition-fast)}.footer-beian a:hover{color:var(--primary-cyan)}@media (max-width:639px){.footer-beian{font-size:0.9375rem;font-weight:600;width:100%}.footer-beian a{color:var(--text-secondary)}}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:48px;height:48px;border-radius:50%;background:var(--glass-bg);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid var(--glass-border);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;opacity:0;transform:translateY(20px);pointer-events:none;transition:opacity var(--transition-base),transform var(--transition-base),color var(--transition-fast),border-color var(--transition-fast);z-index:40;box-shadow:0 4px 16px rgba(0,0,0,0.2)}.back-to-top.visible{opacity:1;transform:translateY(0);pointer-events:auto}.back-to-top:hover{color:var(--primary-cyan);border-color:rgba(6,182,212,0.3)}.back-to-top svg{width:20px;height:20px}@media (max-width:767px){.hero-content{padding:var(--space-lg) var(--space-md)}.stats-row{gap:var(--space-sm)}.stat-number,.stat-label{font-size:1.5rem}.contact-item{gap:var(--space-sm)}}@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important}html{scroll-behavior:auto}.reveal{opacity:1;transform:none}}#preloader{position:fixed;inset:0;z-index:9999;background:var(--bg-base);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1.5rem;transition:opacity 0.6s ease,visibility 0.6s ease}#preloader.preloader-hidden{opacity:0;visibility:hidden;pointer-events:none}.preloader-ring{width:56px;height:56px;border:3px solid rgba(6,182,212,0.15);border-top-color:var(--primary-cyan);border-radius:50%;animation:spin 0.8s linear infinite}.preloader-text{font-size:0.875rem;font-weight:600;color:var(--primary-cyan);letter-spacing:0.2em;text-transform:uppercase;animation:pulse-opacity 1.5s ease-in-out infinite}@keyframes spin{to{transform:rotate(360deg)}}@keyframes pulse-opacity{0%,100%{opacity:0.4}50%{opacity:1}}.typewriter::after{content:'|';display:inline-block;margin-left:2px;color:var(--primary-cyan);animation:blink-cursor 0.8s step-end infinite;font-weight:300}.typewriter-done::after{animation:none;opacity:0}@keyframes blink-cursor{0%,100%{opacity:1}50%{opacity:0}}.tilt-sheen{position:absolute;inset:0;border-radius:inherit;pointer-events:none;z-index:2;transition:background 0.15s ease}