:root{--primary-dark:#0a1628;--primary:#1a365d;--primary-light:#2c5282;--primary-accent:#3182ce;--secondary-dark:#2d3748;--secondary:#4a5568;--secondary-light:#718096;--secondary-lighter:#a0aec0;--accent-blue:#4299e1;--accent-cyan:#00d4ff;--accent-silver:#c0c0c0;--bg-dark:#0a1628;--bg-darker:#050d18;--bg-card:rgba(26,54,93,0.3);--bg-white:rgba(26,54,93,0.4);--border-color:rgba(255,255,255,0.08);--text-primary:#fff;--text-secondary:#a0aec0;--text-muted:#718096;--gradient-hero:linear-gradient(135deg,#0a1628 0%,#1a365d 50%,#0a1628 100%);--gradient-card:linear-gradient(145deg,rgba(26,54,93,0.4) 0%,rgba(10,22,40,0.6) 100%);--gradient-accent:linear-gradient(90deg,#3182ce 0%,#00d4ff 100%);--shadow-glow:0 0 20px rgba(49,130,206,0.3);--spacing-xs:.5rem;--spacing-sm:1rem;--spacing-md:2rem;--spacing-lg:3rem;--spacing-xl:5rem;--font-primary:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Microsoft YaHei',sans-serif;--radius-sm:4px;--radius-md:8px;--radius-lg:12px}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-primary);background:var(--bg-dark);color:var(--text-primary);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}a{color:inherit;text-decoration:none;transition:.2s ease}ul,ol{list-style:none}
h1,h2,h3,h4{font-family:var(--font-primary);font-weight:700;line-height:1.2;margin-bottom:var(--spacing-sm)}
h1{font-size:clamp(2rem,5vw,3.5rem)}h2{font-size:clamp(1.75rem,4vw,2.5rem)}h3{font-size:clamp(1.25rem,3vw,1.75rem)}
p{margin-bottom:var(--spacing-sm);color:var(--text-secondary)}
.text-gradient{background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.text-accent{color:var(--accent-cyan)}
.container{width:100%;max-width:1280px;margin:0 auto;padding:0 var(--spacing-md)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-xs);padding:.875rem 2rem;font-size:1rem;font-weight:600;border-radius:var(--radius-md);cursor:pointer;transition:.3s ease;border:none;outline:none;text-transform:uppercase;letter-spacing:.5px;font-family:var(--font-primary)}
.btn-primary{background:var(--gradient-accent);color:#fff;box-shadow:var(--shadow-glow)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 4px 20px rgba(49,130,206,.5)}
.btn-secondary{background:0 0;color:var(--text-primary);border:2px solid var(--primary-light)}
.btn-secondary:hover{background:var(--primary-light)}
.btn-outline{background:0 0;color:var(--accent-cyan);border:1px solid var(--accent-cyan)}
.btn-outline:hover{background:var(--accent-cyan);color:var(--bg-dark)}
.btn-lg{padding:1rem 2.5rem;font-size:1.125rem}
.btn-sm{padding:.625rem 1.25rem;font-size:.875rem}
.header{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(10,22,40,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(255,255,255,.08);transition:.3s ease}
.header.scrolled{background:rgba(10,22,40,.98);box-shadow:0 4px 12px rgba(0,0,0,.4)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:.625rem}
.logo-text{font-size:1.5rem;font-weight:800;letter-spacing:-.5px;color:var(--text-primary)}
.logo-text span{color:var(--accent-cyan)}
.nav-links{display:flex;align-items:center;gap:1.75rem}
.nav-link{font-size:.9375rem;font-weight:500;color:var(--text-secondary);position:relative;padding:.5rem 0}
.nav-link:hover,.nav-link.active{color:var(--text-primary)}
.nav-link::after{content:"";position:absolute;bottom:0;left:0;width:0;height:2px;background:var(--gradient-accent);transition:.3s ease}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.header-right{display:flex;align-items:center;gap:1rem}
.lang-switcher{display:flex;align-items:center;gap:.25rem;padding-left:1rem;border-left:1px solid var(--secondary-dark)}
.lang-link{font-size:.8125rem;padding:.25rem .5rem;border-radius:var(--radius-sm);color:var(--text-muted)}
.lang-link:hover,.lang-link.active{color:var(--text-primary);background:var(--primary-light)}
.mobile-menu-btn{display:none;flex-direction:column;gap:5px;padding:.5rem;background:0 0;border:none;cursor:pointer}
.mobile-menu-btn span{display:block;width:22px;height:2px;background:var(--text-primary);transition:.2s ease;border-radius:2px}
.hero{position:relative;min-height:100vh;display:flex;align-items:center;background:linear-gradient(to right,rgba(10,22,40,0.98) 0%,rgba(10,22,40,0.85) 35%,rgba(10,22,40,0.4) 60%,transparent 75%),url('/images/hero-bg-future-city.jpg?v=3');background-size:cover;background-position:center right;background-repeat:no-repeat;overflow:hidden;padding-top:72px}
.hero::after{content:"";position:absolute;bottom:0;right:0;width:30%;height:20%;background:linear-gradient(to top left,rgba(10,22,40,0.85) 0%,transparent 100%);pointer-events:none;z-index:1}
.hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 15% 50%,rgba(49,130,206,.2) 0%,transparent 50%),radial-gradient(ellipse at 40% 30%,rgba(0,212,255,.08) 0%,transparent 40%);pointer-events:none}
.hero-grid-bg{position:absolute;inset:0;background-image:linear-gradient(rgba(49,130,206,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(49,130,206,.04) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
.hero .container{position:relative;z-index:2}
.hero-content{max-width:780px}
.hero-subtitle{font-size:.875rem;font-weight:600;text-transform:uppercase;letter-spacing:3px;color:var(--accent-cyan);margin-bottom:var(--spacing-md)}
.hero-title{font-size:clamp(2.5rem,6vw,4rem);font-weight:800;line-height:1.1;margin-bottom:var(--spacing-md)}
.hero-title span{display:block}
.hero-desc{font-size:clamp(1.0625rem,2vw,1.25rem);color:var(--text-secondary);max-width:600px;margin-bottom:var(--spacing-lg);line-height:1.7}
.hero-buttons{display:flex;gap:var(--spacing-sm);flex-wrap:wrap}
.hero-stats{display:flex;gap:var(--spacing-xl);margin-top:var(--spacing-xl);padding-top:var(--spacing-lg);border-top:1px solid rgba(255,255,255,.1)}
.stat-item{text-align:center}
.stat-number{font-size:2.5rem;font-weight:800;color:var(--accent-cyan);line-height:1}
.stat-label{font-size:.8125rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px;margin-top:.375rem}
.section{padding:var(--spacing-xl) 0;position:relative}
.section-header{text-align:center;max-width:700px;margin:0 auto var(--spacing-lg)}
.section-label{display:inline-block;font-size:.8125rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;color:var(--accent-cyan);margin-bottom:var(--spacing-sm)}
.section-title{margin-bottom:var(--spacing-sm)}
.section-desc{font-size:1.0625rem;color:var(--text-secondary)}
.card{background:var(--gradient-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:var(--spacing-md);transition:.3s ease;backdrop-filter:blur(10px)}
.card:hover{transform:translateY(-4px);border-color:rgba(49,130,206,.4);box-shadow:var(--shadow-glow)}
.card-icon{width:56px;height:56px;display:flex;align-items:center;justify-content:center;background:var(--gradient-accent);border-radius:var(--radius-md);margin-bottom:var(--spacing-sm);font-size:1.375rem}
.card-title{font-size:1.1875rem;margin-bottom:.5rem;color:var(--text-primary)}
.card-text{color:var(--text-secondary);font-size:.9375rem;line-height:1.6}
.features-grid,.products-grid,.solutions-grid,.cases-grid{display:grid;gap:var(--spacing-md)}
.features-grid{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.products-grid{grid-template-columns:repeat(auto-fit,minmax(320px,1fr))}
.solutions-grid{grid-template-columns:repeat(auto-fit,minmax(340px,1fr))}
.cases-grid{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-md)}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-md)}
.product-card{overflow:hidden}
.product-image{width:100%;height:200px;border-radius:var(--radius-md);margin-bottom:var(--spacing-sm);background:var(--secondary-dark);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:.875rem;overflow:hidden}
.product-image img{width:100%;height:100%;object-fit:cover;display:block;border-radius:var(--radius-md)}
.product-tag{display:inline-block;font-size:.6875rem;font-weight:600;text-transform:uppercase;padding:.2rem .625rem;background:var(--primary-light);color:var(--accent-cyan);border-radius:var(--radius-sm);margin-bottom:.5rem}
.product-title{font-size:1.1875rem;margin-bottom:.5rem}
.product-specs{display:flex;flex-wrap:wrap;gap:.375rem;margin:.75rem 0}
.spec-tag{font-size:.75rem;padding:.2rem .5rem;background:rgba(255,255,255,.05);border-radius:var(--radius-sm);color:var(--text-secondary)}
.solution-card{display:flex;flex-direction:column}
.solution-header{display:flex;align-items:center;gap:var(--spacing-sm);margin-bottom:var(--spacing-sm)}
.solution-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--gradient-accent);border-radius:var(--radius-md);font-size:1.25rem;flex-shrink:0}
.solution-list{margin-top:.75rem}
.solution-list li{display:flex;align-items:flex-start;gap:.5rem;padding:.375rem 0;color:var(--text-secondary);font-size:.9375rem}
.solution-list li::before{content:"\2713";color:var(--accent-cyan);font-weight:700;flex-shrink:0;margin-top:1px}
.case-card{position:relative;overflow:hidden}
.case-image{width:100%;height:200px;border-radius:var(--radius-md);margin-bottom:var(--spacing-sm);background:var(--secondary-dark);display:flex;align-items:center;justify-content:center;color:var(--text-muted);font-size:.875rem}
.case-tag{position:absolute;top:var(--spacing-md);left:var(--spacing-md);background:var(--gradient-accent);padding:.25rem .75rem;border-radius:var(--radius-sm);font-size:.6875rem;font-weight:600;color:#fff}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-lg);align-items:center}
.about-image{border-radius:var(--radius-lg);overflow:hidden;background:var(--secondary-dark);height:350px;display:flex;align-items:center;justify-content:center;color:var(--text-muted)}
.about-list{margin:var(--spacing-md) 0}
.about-list li{display:flex;align-items:flex-start;gap:.625rem;padding:.375rem 0;color:var(--text-secondary);font-size:.9375rem}
.about-list li::before{content:"\25B8";color:var(--accent-cyan);font-size:1.125rem;line-height:1;flex-shrink:0}
.timeline{position:relative;max-width:700px;margin:0 auto;padding-left:2rem}
.timeline::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--primary-light)}
.timeline-item{position:relative;padding-bottom:var(--spacing-md);padding-left:var(--spacing-md)}
.timeline-item::before{content:"";position:absolute;left:-2.375rem;top:.375rem;width:12px;height:12px;border-radius:50%;background:var(--accent-cyan);border:2px solid var(--bg-dark)}
.timeline-year{font-size:1rem;font-weight:700;color:var(--accent-cyan);margin-bottom:.25rem}
.timeline-text{color:var(--text-secondary);font-size:.9375rem}
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:var(--spacing-lg)}
.contact-info{display:flex;flex-direction:column;gap:var(--spacing-md)}
.contact-item{display:flex;align-items:flex-start;gap:var(--spacing-sm);padding:var(--spacing-md);background:var(--bg-card);border-radius:var(--radius-md);border:1px solid rgba(255,255,255,.08)}
.contact-icon{width:44px;height:44px;display:flex;align-items:center;justify-content:center;background:var(--gradient-accent);border-radius:var(--radius-md);font-size:1.125rem;flex-shrink:0}
.contact-details h4{font-size:.9375rem;margin-bottom:.25rem}
.contact-details p{color:var(--text-secondary);font-size:.875rem;margin:0}
.contact-form{background:var(--bg-card);padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.08)}
.form-group{margin-bottom:var(--spacing-md)}
.form-label{display:block;font-size:.8125rem;font-weight:500;margin-bottom:.375rem;color:var(--text-secondary)}
.form-input,.form-textarea,.form-select{width:100%;padding:.75rem 1rem;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9375rem;font-family:var(--font-primary);transition:.2s ease}
.form-input:focus,.form-textarea:focus,.form-select:focus{outline:none;border-color:var(--primary-accent);box-shadow:0 0 0 3px rgba(49,130,206,.2)}
.form-textarea{min-height:110px;resize:vertical}
.form-select option{background:var(--bg-dark);color:var(--text-primary)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--spacing-md)}
.qr-section{background:var(--bg-card);padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.08);margin-top:var(--spacing-lg)}
.qr-title{text-align:center;margin-bottom:var(--spacing-md)}
.qr-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--spacing-md)}
.qr-item{text-align:center}
.qr-placeholder{width:140px;height:140px;margin:0 auto var(--spacing-sm);border-radius:var(--radius-md);overflow:hidden;border:none;background:transparent}
.qr-placeholder img{width:100%;height:100%;object-fit:cover;display:block;border-radius:var(--radius-md)}
.qr-label{font-weight:600;font-size:.9375rem;margin-bottom:.25rem}
.qr-desc{font-size:.75rem;color:var(--text-muted)}
.cta-section{background:var(--gradient-hero);position:relative;overflow:hidden}
.cta-section::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at center,rgba(49,130,206,.2) 0%,transparent 70%);pointer-events:none}
.cta-content{position:relative;z-index:1;text-align:center;max-width:700px;margin:0 auto}
.cta-title{font-size:clamp(1.75rem,4vw,2.5rem);margin-bottom:var(--spacing-sm)}
.cta-text{font-size:1.0625rem;color:var(--text-secondary);margin-bottom:var(--spacing-md)}
.page-header{padding:130px 0 50px;background:var(--gradient-hero);text-align:center;position:relative}
.page-header::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% 80%,rgba(49,130,206,.12) 0%,transparent 60%);pointer-events:none}
.page-title{font-size:clamp(2rem,5vw,3rem);margin-bottom:var(--spacing-sm);position:relative}
.page-subtitle{font-size:1.0625rem;color:var(--text-secondary);max-width:600px;margin:0 auto;position:relative}
.breadcrumb{display:flex;justify-content:center;gap:.375rem;margin-top:var(--spacing-md);font-size:.8125rem;color:var(--text-muted);position:relative}
.breadcrumb a:hover{color:var(--accent-cyan)}
.breadcrumb-sep{color:var(--secondary-light)}
.scenarios-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--spacing-md)}
.scenario-card{text-align:center;padding:var(--spacing-md)}
.scenario-icon{width:72px;height:72px;margin:0 auto var(--spacing-sm);background:var(--bg-card);border:1px solid rgba(255,255,255,.08);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:1.75rem}
.scenario-title{font-size:1.0625rem;margin-bottom:.375rem}
.scenario-text{font-size:.875rem;color:var(--text-muted)}
.footer{background:var(--bg-darker);border-top:1px solid rgba(255,255,255,.08);padding:var(--spacing-lg) 0 var(--spacing-md)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--spacing-lg);margin-bottom:var(--spacing-lg)}
.footer-brand{max-width:300px}
.footer-logo{font-size:1.375rem;font-weight:800;margin-bottom:var(--spacing-sm)}
.footer-logo span{color:var(--accent-cyan)}
.footer-desc{color:var(--text-muted);font-size:.875rem;margin-bottom:var(--spacing-md);line-height:1.6}
.footer-title{font-size:.9375rem;font-weight:600;margin-bottom:var(--spacing-md);color:var(--text-primary)}
.footer-links li{margin-bottom:.5rem}
.footer-links a{color:var(--text-muted);font-size:.875rem}
.footer-links a:hover{color:var(--accent-cyan)}
.footer-contact p{color:var(--text-muted);font-size:.875rem;margin-bottom:.375rem}
.footer-bottom{padding-top:var(--spacing-md);border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:var(--spacing-sm)}
.footer-icp{font-size:.75rem;color:var(--text-muted)}
.footer-icp a{color:var(--text-muted)}
.footer-icp a:hover{color:var(--accent-cyan)}

/* ===== Additional Styles for Sub-pages ===== */

/* page-hero - used by zh about/cases/contact pages */
.page-hero{padding:130px 0 50px;background:var(--gradient-hero);text-align:center;position:relative}
.page-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse at 50% 80%,rgba(49,130,206,.12) 0%,transparent 60%);pointer-events:none}
.page-hero h1{font-size:clamp(2rem,5vw,3rem);margin-bottom:var(--spacing-sm);position:relative}
.page-hero .hero-subtitle{font-size:1.0625rem;color:var(--text-secondary);max-width:600px;margin:0 auto;position:relative}

/* about-intro */
.about-intro{padding:var(--spacing-xl) 0}
.about-intro h2{margin-bottom:var(--spacing-md)}
.about-intro p{line-height:1.8}
.about-text{color:var(--text-secondary);font-size:1rem;line-height:1.8;margin-bottom:var(--spacing-sm)}

/* advantages-section & advantage-card */
.advantages-section{padding:var(--spacing-xl) 0;background:var(--bg-darker)}
.advantages-section .section-title{text-align:center;margin-bottom:var(--spacing-lg)}
.advantages-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--spacing-md)}
.advantage-card{background:var(--gradient-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:var(--spacing-md);transition:.3s ease;backdrop-filter:blur(10px);text-align:center}
.advantage-card:hover{transform:translateY(-4px);border-color:rgba(49,130,206,.4);box-shadow:var(--shadow-glow)}
.advantage-icon{width:72px;height:72px;margin:0 auto var(--spacing-sm);display:flex;align-items:center;justify-content:center}
.advantage-card h3{font-size:1.125rem;margin-bottom:.5rem;color:var(--text-primary)}
.advantage-card p{color:var(--text-secondary);font-size:.9375rem;line-height:1.6}

/* timeline-section */
.timeline-section{padding:var(--spacing-xl) 0}
.timeline-section .section-title{text-align:center;margin-bottom:var(--spacing-lg)}
.timeline-content h3{font-size:1.0625rem;color:var(--text-primary);margin-bottom:.25rem}
.timeline-content p{color:var(--text-secondary);font-size:.9375rem;margin:0}
.timeline-dot{width:12px;height:12px;border-radius:50%;background:var(--accent-cyan);border:2px solid var(--bg-dark);position:absolute;left:-2.375rem;top:.375rem}

/* cases-section & case-card detail styles */
.cases-section{padding:var(--spacing-xl) 0}
.cases-section .case-card{background:var(--gradient-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);overflow:hidden;margin-bottom:var(--spacing-lg);display:grid;grid-template-columns:1fr 1.5fr;gap:0}
.cases-section .case-card:last-child{margin-bottom:0}
.case-card-img{min-height:260px;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-lg) 0 0 var(--radius-lg)}
.case-card-body{padding:var(--spacing-md)}
.case-card-body h2{font-size:clamp(1.25rem,3vw,1.75rem);margin-bottom:var(--spacing-sm);color:var(--text-primary)}
.case-card-body h3{font-size:1.0625rem;color:var(--accent-cyan);margin:var(--spacing-sm) 0 .5rem}
.case-tags{display:flex;flex-wrap:wrap;gap:.375rem;margin-bottom:var(--spacing-sm)}
.tag{display:inline-block;font-size:.75rem;font-weight:600;padding:.25rem .625rem;background:var(--primary-light);color:var(--accent-cyan);border-radius:var(--radius-sm)}
.case-meta{margin-bottom:var(--spacing-sm)}
.case-meta p{color:var(--text-secondary);font-size:.9375rem;margin-bottom:.375rem}
.case-meta strong{color:var(--text-primary)}
.case-results{list-style:none;padding:0}
.case-results li{display:flex;align-items:flex-start;gap:.5rem;padding:.375rem 0;color:var(--text-secondary);font-size:.9375rem}
.case-results li::before{content:"\2713";color:var(--accent-cyan);font-weight:700;flex-shrink:0;margin-top:1px}

/* contact-section */
.contact-section{padding:var(--spacing-xl) 0}
.contact-section h2{text-align:center;margin-bottom:var(--spacing-lg)}

/* qr-card */
.qr-card{background:var(--bg-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:var(--spacing-md);text-align:center;transition:.3s ease}
.qr-card:hover{border-color:rgba(49,130,206,.4);box-shadow:var(--shadow-glow)}
.qr-card h4{font-size:1.0625rem;color:var(--text-primary);margin-bottom:.25rem}
.qr-card p{font-size:.875rem;color:var(--text-muted);margin:0}

/* contact-info-grid & contact-info-card */
.contact-info-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-md);margin:var(--spacing-lg) 0}
.contact-info-card{background:var(--bg-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:var(--spacing-md)}
.contact-info-card h3{font-size:1.1875rem;color:var(--accent-cyan);margin-bottom:var(--spacing-sm)}
.contact-info-card p{color:var(--text-secondary);font-size:.9375rem;margin-bottom:.375rem}
.contact-info-card strong{color:var(--text-primary)}

/* inquiry-form-wrapper & inquiry-form */
.inquiry-form-wrapper{background:var(--bg-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);padding:var(--spacing-lg);margin-top:var(--spacing-lg)}
.inquiry-form-wrapper h2{text-align:center;margin-bottom:var(--spacing-lg);color:var(--text-primary)}
.inquiry-form .form-group label{display:block;font-size:.8125rem;font-weight:500;margin-bottom:.375rem;color:var(--text-secondary)}
.inquiry-form .form-group input,
.inquiry-form .form-group select,
.inquiry-form .form-group textarea{width:100%;padding:.75rem 1rem;background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9375rem;font-family:var(--font-primary);transition:.2s ease}
.inquiry-form .form-group input:focus,
.inquiry-form .form-group select:focus,
.inquiry-form .form-group textarea:focus{outline:none;border-color:var(--primary-accent);box-shadow:0 0 0 3px rgba(49,130,206,.2)}
.inquiry-form .form-group textarea{min-height:110px;resize:vertical}
.inquiry-form .form-group select option{background:var(--bg-dark);color:var(--text-primary)}
.inquiry-form .required{color:#e53e3e}

/* contact-form-wrapper (en contact page) */
.contact-form-wrapper{background:var(--bg-card);padding:var(--spacing-lg);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.08)}
.contact-label{font-size:.9375rem;color:var(--text-primary);margin-bottom:.25rem}
.contact-value{color:var(--text-secondary);font-size:.875rem;margin-bottom:.25rem}
.contact-value a{color:var(--accent-cyan)}
.contact-value a:hover{text-decoration:underline}

/* Responsive */
@media(max-width:1024px){.grid-4{grid-template-columns:repeat(2,1fr)}.footer-grid{grid-template-columns:repeat(2,1fr)}.about-grid,.contact-grid{grid-template-columns:1fr}.cases-section .case-card{grid-template-columns:1fr}.case-card-img{border-radius:var(--radius-lg) var(--radius-lg) 0 0;min-height:200px}.contact-info-grid{grid-template-columns:1fr}}
@media(max-width:768px){.nav-links{position:fixed;top:72px;left:0;right:0;background:var(--bg-dark);flex-direction:column;padding:var(--spacing-md);gap:var(--spacing-sm);border-bottom:1px solid rgba(255,255,255,.08);transform:translateY(-120%);opacity:0;visibility:hidden;transition:.3s ease}.nav-links.active{transform:translateY(0);opacity:1;visibility:visible}.mobile-menu-btn{display:flex}.lang-switcher{margin-left:0;padding-left:0;border-left:none;margin-top:var(--spacing-sm);padding-top:var(--spacing-sm);border-top:1px solid var(--secondary-dark)}.hero-stats{flex-direction:column;gap:var(--spacing-md)}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}.qr-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr;text-align:center}.footer-brand{max-width:100%}.footer-bottom{flex-direction:column;text-align:center}.form-row{grid-template-columns:1fr}.hero-buttons{flex-direction:column}.btn{width:100%}.btn-sm{width:auto}}
@media(max-width:480px){:root{--spacing-xl:3rem;--spacing-lg:2rem;--spacing-md:1.5rem}.container{padding:0 var(--spacing-sm)}.section{padding:var(--spacing-lg) 0}.hero{min-height:auto;padding:110px 0 50px}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
[data-animate]{opacity:0}[data-animate].visible{animation:fadeInUp .6s ease forwards}
.text-center{text-align:center}.mt-3{margin-top:var(--spacing-md)}.mt-4{margin-top:var(--spacing-lg)}.mb-3{margin-bottom:var(--spacing-md)}.mb-4{margin-bottom:var(--spacing-lg)}.hidden{display:none}

/* ===== Product List Styles ===== */
.product-list-section{padding:var(--spacing-lg) 0 0}
.product-list-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin-bottom:var(--spacing-md);display:flex;align-items:center;gap:.75rem}
.product-list-title::before{content:"";display:block;width:4px;height:1.5rem;background:var(--gradient-accent);border-radius:2px}
.product-list{display:flex;flex-direction:column;gap:var(--spacing-md)}
.product-list-item{display:flex;align-items:flex-start;gap:var(--spacing-md);padding:var(--spacing-md);background:var(--gradient-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);backdrop-filter:blur(10px);transition:.3s ease}
.product-list-item:hover{transform:translateY(-4px);border-color:rgba(49,130,206,.4);box-shadow:var(--shadow-glow)}
.product-list-img{width:140px;min-width:140px;height:140px;background:var(--secondary-dark);border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;overflow:hidden;flex-shrink:0}
.product-list-img svg{width:56px;height:56px;color:var(--secondary-lighter)}
.product-list-img img{width:100%;height:100%;object-fit:contain;padding:12px}
.product-list-body{flex:1;min-width:0}
.product-list-name{font-size:1.125rem;font-weight:700;color:var(--text-primary);margin-bottom:.25rem;line-height:1.3}
.product-list-model{display:inline-block;font-size:.8125rem;font-weight:600;color:var(--accent-cyan);background:rgba(0,212,255,.1);padding:.125rem .5rem;border-radius:var(--radius-sm);margin-bottom:.5rem}
.product-list-desc{font-size:.9375rem;color:var(--text-secondary);line-height:1.6;margin-bottom:.75rem}
.product-list-tags{display:flex;flex-wrap:wrap;gap:.375rem;margin-bottom:.75rem}
.product-list-tags .param-tag{font-size:.75rem;font-weight:500;padding:.2rem .625rem;border:1px solid var(--primary-accent);color:var(--accent-cyan);border-radius:50px;background:rgba(49,130,206,.08);white-space:nowrap}
.product-list-actions{display:flex;gap:.5rem;flex-wrap:wrap}
.product-list-actions .btn{padding:.5rem 1rem;font-size:.8125rem;border-radius:var(--radius-sm);white-space:nowrap}
.product-list-actions .btn-outline{border-color:var(--secondary-light);color:var(--text-secondary)}
.product-list-actions .btn-outline:hover{border-color:var(--accent-cyan);color:var(--accent-cyan);background:rgba(0,212,255,.08)}
.product-list-actions .btn-primary{background:var(--gradient-accent);color:#fff;box-shadow:none}
.product-list-actions .btn-primary:hover{box-shadow:var(--shadow-glow)}

/* Product List Responsive */
@media(max-width:768px){
.product-list-item{flex-direction:column;align-items:stretch}
.product-list-img{width:100%;min-width:0;height:160px}
.product-list-actions{justify-content:flex-start}
.product-list-actions .btn{flex:1;text-align:center;justify-content:center}
}

/* ===== FAQ Accordion Styles ===== */
.faq-section{padding:var(--spacing-xl) 0}
.faq-list{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:.75rem}
.faq-item{background:var(--gradient-card);border:1px solid rgba(255,255,255,.08);border-radius:var(--radius-lg);overflow:hidden;transition:.3s ease}
.faq-item:hover{border-color:rgba(49,130,206,.3)}
.faq-item.open{border-color:rgba(49,130,206,.5);box-shadow:var(--shadow-glow)}
.faq-question{display:flex;align-items:center;justify-content:space-between;padding:1.125rem 1.5rem;cursor:pointer;font-size:1rem;font-weight:600;color:var(--text-primary);transition:.2s ease;user-select:none;gap:1rem}
.faq-question:hover{color:var(--accent-cyan)}
.faq-arrow{font-size:.75rem;color:var(--secondary-lighter);transition:transform .3s ease;flex-shrink:0}
.faq-item.open .faq-arrow{transform:rotate(180deg);color:var(--accent-cyan)}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .4s ease,padding .3s ease}
.faq-item.open .faq-answer{max-height:500px}
.faq-answer p{padding:0 1.5rem 1.25rem;color:var(--text-secondary);font-size:.9375rem;line-height:1.7;margin:0}

@media(max-width:768px){
.faq-question{padding:1rem 1.125rem;font-size:.9375rem}
.faq-answer p{padding:0 1.125rem 1rem;font-size:.875rem}
}

/* ===== Floating AI Chat Button ===== */
.ai-float-btn{position:fixed;bottom:2rem;right:2rem;z-index:9999;display:flex;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background:var(--gradient-accent);color:#fff;border:none;border-radius:50px;font-size:.875rem;font-weight:600;cursor:pointer;box-shadow:0 4px 20px rgba(49,130,206,.5);transition:.3s ease;font-family:var(--font-primary);white-space:nowrap}
.ai-float-btn:hover{transform:translateY(-2px);box-shadow:0 6px 28px rgba(49,130,206,.6)}
.ai-float-btn:active{transform:translateY(0)}
.ai-float-btn .ai-icon{font-size:1.25rem;line-height:1}
@media(max-width:768px){.ai-float-btn{bottom:1.25rem;right:1.25rem;padding:.625rem 1rem;font-size:.8125rem}}

/* Blog / 公众号矩阵页面 */
.blog-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(340px,1fr));gap:2rem;max-width:900px;margin:0 auto}
.blog-card{background:var(--bg-white);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem;text-align:center;transition:transform 0.3s,box-shadow 0.3s}
.blog-card:hover{transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,0.08)}
.blog-card-header{display:flex;align-items:center;justify-content:center;gap:0.75rem;margin-bottom:1rem;flex-wrap:wrap}
.blog-card-title{font-size:1.25rem;font-weight:700;color:var(--text-primary);margin:0}
.blog-card-badge{display:inline-block;padding:0.2rem 0.75rem;border-radius:999px;font-size:0.75rem;font-weight:600;background:var(--accent);color:#fff}
.blog-card-desc{color:var(--text-secondary);font-size:0.95rem;margin-bottom:1.25rem;line-height:1.6}
.blog-card-info{color:var(--text-muted);font-size:0.8rem;margin-bottom:1.5rem;line-height:1.8}
.blog-card-info p{margin:0}
.blog-card-qr{display:flex;justify-content:center;margin-bottom:0.5rem}
.blog-card-qr img{width:160px;height:160px;border-radius:var(--radius-md);border:1px solid var(--border-color)}
.blog-qr-fallback{color:var(--text-muted);font-size:0.85rem;margin-top:0.5rem}
@media(max-width:768px){.blog-cards{grid-template-columns:1fr;max-width:400px}.blog-card-qr img{width:140px;height:140px}}