*{margin:0;padding:0;box-sizing:border-box;}
:root{--primary:#2563eb;--primary-dark:#1d4ed8;--primary-light:#dbeafe;--primary-soft:#eff6ff;--secondary:#0f172a;--accent:#f59e0b;--success:#10b981;--gray-50:#f8fafc;--gray-100:#f1f5f9;--gray-200:#e2e8f0;--gray-300:#cbd5e1;--gray-400:#94a3b8;--gray-500:#64748b;--gray-600:#475569;--gray-700:#334155;--gray-800:#1e293b;--gray-900:#0f172a;--shadow-sm:0 1px 2px 0 rgba(0,0,0,0.05);--shadow:0 4px 6px -1px rgba(0,0,0,0.1),0 2px 4px -2px rgba(0,0,0,0.1);--shadow-md:0 10px 15px -3px rgba(0,0,0,0.1),0 4px 6px -4px rgba(0,0,0,0.1);--shadow-lg:0 20px 25px -5px rgba(0,0,0,0.1),0 8px 10px -6px rgba(0,0,0,0.1);--shadow-xl:0 25px 50px -12px rgba(0,0,0,0.25);--radius:10px;--radius-lg:16px;--radius-xl:24px;}
html{scroll-behavior:smooth;}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--gray-700);line-height:1.7;background:#fff;font-size:16px;}
a{text-decoration:none;color:inherit;transition:all 0.2s;}
ul{list-style:none;}
img{max-width:100%;height:auto;display:block;}
.container{max-width:1200px;margin:0 auto;padding:0 20px;}
.text-primary{color:var(--primary);}

/* Header */
.site-header{background:#fff;border-bottom:1px solid var(--gray-200);position:sticky;top:0;z-index:1000;}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:72px;}
.logo{font-size:22px;font-weight:800;color:var(--secondary);display:flex;align-items:center;gap:10px;}
.logo::before{content:"";width:36px;height:36px;background:linear-gradient(135deg,var(--primary),#3b82f6);border-radius:8px;box-shadow:0 4px 12px rgba(37,99,235,0.3);}
.main-nav ul{display:flex;gap:6px;}
.main-nav a{font-size:15px;color:var(--gray-600);padding:10px 18px;border-radius:8px;transition:all 0.2s;font-weight:500;}
.main-nav a:hover{color:var(--primary);background:var(--primary-soft);}
.main-nav a.active{color:var(--primary);background:var(--primary-soft);}
.header-contact{display:flex;align-items:center;gap:16px;}
.header-contact .phone{font-size:18px;font-weight:700;color:var(--primary);display:flex;align-items:center;gap:8px;}
.header-contact .phone::before{content:"📞";}
.header-cta{padding:12px 28px;background:var(--primary);color:#fff;border-radius:50px;font-weight:600;transition:all 0.3s;box-shadow:0 4px 14px rgba(37,99,235,0.3);}
.header-cta:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 6px 20px rgba(37,99,235,0.4);}
.mobile-nav-btn{display:none;padding:10px 18px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:14px;cursor:pointer;font-weight:500;}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 28px;border-radius:50px;font-size:15px;font-weight:600;cursor:pointer;transition:all 0.3s;border:2px solid transparent;text-align:center;gap:8px;}
.btn-lg{padding:16px 40px;font-size:17px;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(37,99,235,0.3);}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 25px rgba(37,99,235,0.4);}
.btn-outline{border:2px solid rgba(255,255,255,0.5);color:#fff;background:transparent;}
.btn-outline:hover{background:rgba(255,255,255,0.1);border-color:#fff;}
.btn-outline-dark{border:2px solid var(--gray-300);color:var(--gray-700);background:transparent;}
.btn-outline-dark:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft);}
.btn-success{background:var(--success);color:#fff;}
.btn-success:hover{background:#059669;transform:translateY(-2px);}
.btn-secondary{background:var(--gray-600);color:#fff;}
.btn-secondary:hover{background:var(--gray-700);}
.btn-block{display:flex;width:100%;}
.link-arrow{color:var(--primary);font-weight:600;display:inline-flex;align-items:center;gap:4px;}
.link-arrow:hover{gap:8px;}

/* Hero */
.hero{background:linear-gradient(135deg,#0f172a 0%,#1e293b 50%,#334155 100%);color:#fff;padding:100px 0 80px;position:relative;overflow:hidden;}
.hero::before{content:"";position:absolute;top:-50%;right:-20%;width:800px;height:800px;background:radial-gradient(circle,rgba(37,99,235,0.2) 0%,transparent 70%);border-radius:50%;}
.hero .container{position:relative;z-index:1;}
.hero-grid{display:grid;grid-template-columns:1.1fr 0.9fr;gap:60px;align-items:center;}
.hero-badge{display:inline-block;padding:8px 20px;background:rgba(37,99,235,0.2);border:1px solid rgba(37,99,235,0.4);border-radius:50px;font-size:14px;margin-bottom:24px;color:#60a5fa;}
.hero h1{font-size:52px;margin-bottom:24px;font-weight:800;line-height:1.15;}
.hero h1 span{color:#60a5fa;}
.hero p{font-size:18px;opacity:0.85;margin-bottom:32px;line-height:1.8;max-width:540px;}
.hero-actions{display:flex;gap:16px;margin-bottom:40px;}
.hero-trust{display:flex;gap:40px;padding-top:32px;border-top:1px solid rgba(255,255,255,0.12);}
.trust-item{display:flex;flex-direction:column;gap:4px;font-size:14px;color:rgba(255,255,255,0.7);}
.trust-num{font-size:32px;font-weight:800;color:#fff;}
.hero-image{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-xl);background:linear-gradient(135deg,var(--primary),#7c3aed);}
.hero-image img{width:100%;height:420px;object-fit:cover;}

/* Clients */
.clients-section{padding:40px 0;background:var(--gray-50);border-bottom:1px solid var(--gray-200);}
.section-subtitle{text-align:center;color:var(--gray-500);font-size:15px;margin-bottom:24px;}
.clients-grid{display:flex;justify-content:center;align-items:center;gap:48px;flex-wrap:wrap;}
.client-logo{width:100px;height:48px;opacity:0.6;transition:opacity 0.3s;}
.client-logo:hover{opacity:1;}
.client-logo img{width:100%;height:100%;object-fit:contain;}

/* Section */
.section{padding:90px 0;}
.section-light{background:var(--gray-50);}
.section-header{text-align:center;margin-bottom:56px;}
.section-tag{display:inline-block;padding:6px 18px;background:var(--primary-soft);color:var(--primary);border-radius:50px;font-size:13px;font-weight:600;margin-bottom:16px;}
.section-header h2{font-size:38px;color:var(--gray-900);margin-bottom:16px;font-weight:800;}
.section-header p{color:var(--gray-500);font-size:18px;}
.section-more{text-align:center;margin-top:40px;}

/* Features */
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-card{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:36px 28px;text-align:left;transition:all 0.3s;}
.feature-card:hover{border-color:var(--primary);box-shadow:var(--shadow-lg);transform:translateY(-6px);}
.feature-icon{width:72px;height:72px;border-radius:16px;overflow:hidden;margin-bottom:24px;background:var(--primary-soft);}
.feature-icon img{width:100%;height:100%;object-fit:cover;}
.feature-card h3{font-size:19px;margin-bottom:12px;color:var(--gray-900);font-weight:700;}
.feature-card p{color:var(--gray-500);font-size:15px;line-height:1.7;margin-bottom:18px;}

/* Why Section */
.why-section{background:#fff;}
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center;}
.why-image{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-xl);}
.why-image img{width:100%;height:480px;object-fit:cover;}
.why-content h2{font-size:36px;line-height:1.25;margin-bottom:36px;color:var(--gray-900);font-weight:800;}
.why-list{display:flex;flex-direction:column;gap:24px;}
.why-item{display:flex;gap:20px;align-items:flex-start;}
.why-num{width:48px;height:48px;background:var(--primary);color:#fff;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:800;flex-shrink:0;}
.why-item h4{font-size:18px;margin-bottom:6px;color:var(--gray-900);font-weight:700;}
.why-item p{color:var(--gray-500);font-size:15px;line-height:1.6;}

/* Cases */
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.case-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:all 0.3s;border:1px solid var(--gray-200);}
.case-card:hover{box-shadow:var(--shadow-xl);transform:translateY(-6px);}
.case-thumb{height:220px;overflow:hidden;background:linear-gradient(135deg,var(--gray-100),var(--gray-200));}
.case-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s;}
.case-card:hover .case-thumb img{transform:scale(1.08);}
.case-info{padding:24px;}
.case-info h3{font-size:18px;margin-bottom:10px;color:var(--gray-900);font-weight:700;}
.case-info p{color:var(--gray-500);font-size:14px;line-height:1.6;}

/* Packages */
.packages-section{background:linear-gradient(180deg,var(--gray-50) 0%,#fff 100%);}
.packages-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;align-items:start;}
.package-card{background:#fff;border:2px solid var(--gray-200);border-radius:var(--radius-xl);padding:40px 32px;position:relative;transition:all 0.3s;}
.package-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);}
.package-card.featured{border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft),var(--shadow-lg);transform:scale(1.03);}
.package-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--primary),#7c3aed);color:#fff;padding:8px 24px;border-radius:50px;font-size:13px;font-weight:700;box-shadow:var(--shadow);}
.package-card h3{font-size:22px;margin-bottom:16px;color:var(--gray-900);font-weight:700;text-align:center;}
.price{margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--gray-200);text-align:center;}
.price-symbol{font-size:24px;color:var(--gray-500);vertical-align:top;}
.price-num{font-size:48px;font-weight:800;color:var(--primary);line-height:1;}
.price-unit{font-size:15px;color:var(--gray-500);}
.package-features{list-style:none;margin-bottom:28px;}
.package-features li{padding:10px 0 10px 28px;position:relative;color:var(--gray-600);font-size:15px;border-bottom:1px dashed var(--gray-200);}
.package-features li::before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:bold;}
.package-features li:last-child{border-bottom:none;}

/* Process */
.process-section{background:#fff;}
.process-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.process-card{background:var(--gray-50);border-radius:var(--radius-lg);padding:36px 28px;text-align:center;position:relative;transition:all 0.3s;}
.process-card:hover{background:#fff;box-shadow:var(--shadow-lg);transform:translateY(-4px);}
.process-step{width:56px;height:56px;background:linear-gradient(135deg,var(--primary),#3b82f6);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:800;margin:0 auto 20px;box-shadow:0 8px 20px rgba(37,99,235,0.3);}
.process-card h3{font-size:18px;margin-bottom:10px;color:var(--gray-900);font-weight:700;}
.process-card p{color:var(--gray-500);font-size:14px;line-height:1.6;}

/* News List */
.news-list{display:flex;flex-direction:column;gap:16px;}
.news-item{display:flex;justify-content:space-between;align-items:center;padding:24px;background:#fff;border-radius:var(--radius-lg);border:1px solid var(--gray-200);transition:all 0.2s;}
.news-item:hover{box-shadow:var(--shadow-md);border-color:var(--primary);}
.news-content{flex:1;}
.news-content h3{font-size:18px;margin-bottom:8px;color:var(--gray-900);transition:color 0.2s;font-weight:600;}
.news-item:hover .news-content h3{color:var(--primary);}
.news-content p{color:var(--gray-500);font-size:14px;}
.news-date{color:var(--gray-400);font-size:14px;white-space:nowrap;margin-left:24px;background:var(--gray-100);padding:8px 18px;border-radius:50px;}

/* Tabs */
.news-tabs{display:flex;gap:12px;margin-bottom:36px;flex-wrap:wrap;}
.tab-link{padding:10px 24px;background:#fff;border:1px solid var(--gray-200);border-radius:50px;font-size:14px;color:var(--gray-600);transition:all 0.2s;font-weight:500;}
.tab-link.active,.tab-link:hover{background:var(--primary);color:#fff;border-color:var(--primary);}

/* CTA Section */
.cta-section{background:linear-gradient(135deg,var(--secondary) 0%,#1e293b 50%,var(--primary-dark) 100%);color:#fff;padding:100px 0;position:relative;overflow:hidden;}
.cta-section::before{content:"";position:absolute;bottom:-30%;left:-10%;width:600px;height:600px;background:radial-gradient(circle,rgba(37,99,235,0.25) 0%,transparent 70%);border-radius:50%;}
.cta-content{position:relative;z-index:1;text-align:center;max-width:760px;margin:0 auto;}
.cta-section h2{font-size:38px;margin-bottom:16px;font-weight:800;}
.cta-section p{font-size:18px;opacity:0.85;margin-bottom:36px;}
.cta-form-inline{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;}
.cta-form-inline .form-control{min-width:220px;padding:16px 20px;border-radius:50px;border:none;font-size:15px;}
.cta-form-inline .btn{padding:16px 36px;}

/* Page Banner */
.page-banner{background:linear-gradient(135deg,var(--secondary) 0%,var(--primary-dark) 100%);color:#fff;padding:70px 0;text-align:center;position:relative;overflow:hidden;}
.page-banner::before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;}
.page-banner .container{position:relative;z-index:1;}
.page-banner h1{font-size:38px;margin-bottom:12px;font-weight:800;}
.page-banner p{opacity:0.8;font-size:15px;}
.page-banner a{color:rgba(255,255,255,0.85);}
.page-banner a:hover{color:#fff;}

/* Contact */
.contact-section{background:var(--gray-50);}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
.contact-info-card{background:#fff;padding:40px;border-radius:var(--radius-xl);box-shadow:var(--shadow);border:1px solid var(--gray-200);}
.contact-info h2,.contact-form h2{font-size:26px;margin-bottom:24px;color:var(--gray-900);font-weight:700;}
.contact-info ul li{padding:16px 0;border-bottom:1px solid var(--gray-100);font-size:15px;display:flex;align-items:center;gap:12px;}
.contact-info strong{color:var(--primary);min-width:60px;}
.form-group{margin-bottom:20px;}
.form-group label{display:block;margin-bottom:8px;font-weight:600;color:var(--gray-700);font-size:14px;}
.form-control{width:100%;padding:14px 18px;border:1px solid var(--gray-300);border-radius:var(--radius);font-size:15px;transition:all 0.2s;background:#fff;}
.form-control:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 4px var(--primary-soft);}
textarea.form-control{resize:vertical;min-height:120px;}
.contact-form-card{background:#fff;padding:40px;border-radius:var(--radius-xl);box-shadow:var(--shadow);border:1px solid var(--gray-200);}

/* Article Detail */
.article-detail{max-width:820px;margin:0 auto;background:#fff;padding:48px;border-radius:var(--radius-xl);box-shadow:var(--shadow);border:1px solid var(--gray-200);}
.article-meta{color:var(--gray-500);font-size:14px;margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--gray-200);display:flex;gap:24px;}
.article-body{font-size:17px;line-height:1.9;color:var(--gray-700);}
.article-body h2{font-size:28px;margin:36px 0 18px;color:var(--gray-900);font-weight:700;}
.article-body h3{font-size:22px;margin:28px 0 14px;color:var(--gray-900);font-weight:700;}
.article-body p{margin-bottom:18px;}
.article-body ul,.article-body ol{margin:18px 0 18px 28px;}
.article-body li{margin-bottom:10px;}
.article-body img{border-radius:var(--radius);margin:20px 0;}
.article-nav{margin-top:40px;padding-top:24px;border-top:1px solid var(--gray-200);display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;}
.article-nav a{color:var(--primary);font-size:15px;font-weight:500;}
.article-nav a:hover{text-decoration:underline;}

/* Footer */
.site-footer{background:var(--gray-900);color:rgba(255,255,255,0.7);padding:70px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.8fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px;}
.footer-col h3{color:#fff;font-size:17px;margin-bottom:20px;font-weight:700;}
.footer-col p{font-size:15px;line-height:1.8;}
.footer-col ul li{padding:8px 0;font-size:15px;}
.footer-col a:hover{color:#fff;}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.1);padding-top:24px;text-align:center;font-size:14px;}

/* Float QQ */
.float-qq{position:fixed;right:24px;bottom:100px;z-index:99;}
.float-qq a{display:flex;align-items:center;gap:8px;background:var(--primary);color:#fff;padding:14px 22px;border-radius:50px;font-size:14px;font-weight:600;box-shadow:var(--shadow-lg);transition:all 0.3s;}
.float-qq a:hover{background:var(--primary-dark);transform:translateY(-2px);}

/* Template Grid */
.tpl-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;}
.tpl-card{background:#fff;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);transition:all 0.3s;border:1px solid var(--gray-200);}
.tpl-card:hover{box-shadow:var(--shadow-xl);transform:translateY(-6px);}
.tpl-thumb{height:240px;overflow:hidden;background:linear-gradient(135deg,var(--gray-100),var(--gray-200));}
.tpl-thumb img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s;}
.tpl-card:hover .tpl-thumb img{transform:scale(1.08);}
.tpl-info{padding:22px;}
.tpl-info h3{font-size:17px;color:var(--gray-900);font-weight:700;}
.tpl-detail{display:grid;grid-template-columns:2fr 1fr;gap:40px;align-items:start;}
.tpl-detail-img{border-radius:var(--radius-xl);overflow:hidden;box-shadow:var(--shadow-xl);}
.tpl-detail-img img{width:100%;}
.tpl-detail-info{padding:32px;background:#fff;border-radius:var(--radius-xl);box-shadow:var(--shadow);border:1px solid var(--gray-200);}
.tpl-detail-info h2{font-size:26px;margin-bottom:20px;color:var(--gray-900);font-weight:700;}
.tpl-detail-info .btn{margin-bottom:12px;}

/* Service List */
.service-list{display:flex;flex-direction:column;gap:24px;}
.service-item{background:#fff;border:1px solid var(--gray-200);border-radius:var(--radius-lg);padding:32px;display:flex;align-items:center;gap:28px;transition:all 0.3s;}
.service-item:hover{box-shadow:var(--shadow-lg);border-color:var(--primary);}
.service-item-image{width:140px;height:140px;border-radius:var(--radius);overflow:hidden;flex-shrink:0;}
.service-item-image img{width:100%;height:100%;object-fit:cover;}
.service-item-content{flex:1;}
.service-item h3{font-size:22px;margin-bottom:12px;color:var(--gray-900);font-weight:700;}
.service-item p{color:var(--gray-500);font-size:15px;margin-bottom:16px;}
.service-detail{margin-top:16px;padding-top:16px;border-top:1px solid var(--gray-200);}

/* Case Detail Cover */
.case-cover{margin-bottom:28px;border-radius:16px;overflow:hidden;}
.case-cover img{width:100%;max-height:460px;object-fit:cover;}

/* About */
.about-content{font-size:17px;line-height:1.9;color:var(--gray-700);}
.about-content h2{font-size:30px;margin:36px 0 18px;color:var(--gray-900);font-weight:700;}
.about-content p{margin-bottom:18px;}
.about-content img{border-radius:var(--radius-lg);margin:28px 0;}

/* Pagination */
.pagination{display:flex;justify-content:center;gap:8px;margin-top:32px;}
.pagination .btn-sm{padding:8px 16px;font-size:14px;}

/* Responsive */
@media(max-width:992px){
    .features-grid,.service-grid{grid-template-columns:repeat(2,1fr);}
    .why-grid{grid-template-columns:1fr;gap:40px;}
    .hero-grid{grid-template-columns:1fr;}
    .hero-image img{height:300px;}
    .footer-grid{grid-template-columns:repeat(2,1fr);}
}
@media(max-width:768px){
    .main-nav{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;padding:20px;box-shadow:var(--shadow-lg);border-top:1px solid var(--gray-200);}
    .main-nav.open{display:block;}
    .main-nav ul{flex-direction:column;gap:8px;}
    .mobile-nav-btn{display:block;}
    .header-contact{display:none;}
    .hero{padding:60px 0;}
    .hero h1{font-size:34px;}
    .hero-trust{flex-direction:column;gap:16px;}
    .section{padding:60px 0;}
    .section-header h2{font-size:28px;}
    .features-grid,.service-grid,.cases-grid,.packages-grid,.footer-grid,.tpl-grid,.process-grid{grid-template-columns:1fr;}
    .contact-grid{grid-template-columns:1fr;}
    .news-item{flex-direction:column;align-items:flex-start;}
    .news-date{margin-left:0;margin-top:12px;}
    .tpl-detail{grid-template-columns:1fr;}
    .service-item{flex-direction:column;text-align:center;}
    .service-item-image{width:100%;height:200px;}
    .cta-form-inline{flex-direction:column;}
    .cta-form-inline .form-control{width:100%;}
}