:root {
  --primary: #1a6b3c;
  --primary-light: #4caf7d;
  --primary-dark: #114d2b;
  --dark: #2c3e50;
  --text: #333;
  --muted: #666;
  --light: #999;
  --bg: #fff;
  --bg-light: #f8fafb;
  --bg-gray: #f0f4f2;
  --border: #e0e8e4;
  --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "微软雅黑", Arial, sans-serif;
  --shadow: 0 4px 16px rgba(0,0,0,.10);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --radius: 8px;
  --radius-lg: 12px;
  --t: .25s ease;
  --max: 1200px;
  --nav-h: 70px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
a{color:var(--primary);text-decoration:none;transition:color var(--t)}
a:hover{color:var(--primary-light)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
.container{max-width:var(--max);margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-title{font-size:2rem;font-weight:700;color:var(--dark);margin-bottom:12px;letter-spacing:-.01em}
.section-subtitle{font-size:1.05rem;color:var(--muted);margin-bottom:48px;max-width:560px}
.section-header.center{text-align:center}
.section-header.center .section-subtitle{margin:0 auto 48px}
.text-center{text-align:center}

/* Nav */
.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;height:var(--nav-h);background:rgba(255,255,255,.97);border-bottom:1px solid transparent;transition:border-color var(--t),box-shadow var(--t)}
.navbar.scrolled{border-bottom-color:var(--border);box-shadow:0 1px 8px rgba(0,0,0,.08)}
.navbar .container{height:100%;display:flex;align-items:center;justify-content:space-between}
.navbar-brand{display:flex;align-items:center;gap:10px;font-size:1.05rem;font-weight:700;color:var(--dark)}
.navbar-brand .dot{width:8px;height:8px;background:var(--primary);border-radius:50%}
.navbar-nav{display:flex;align-items:center;gap:4px}
.navbar-nav a{padding:6px 14px;color:var(--text);font-size:.9rem;font-weight:500;border-radius:6px;transition:background var(--t),color var(--t)}
.navbar-nav a:hover,.navbar-nav a.active{color:var(--primary);background:var(--bg-gray)}
.navbar-nav .cta{background:var(--primary);color:#fff;margin-left:8px;padding:8px 18px}
.navbar-nav .cta:hover{background:var(--primary-dark);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;background:none;border:none;padding:4px}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--dark);border-radius:2px;transition:transform var(--t),opacity var(--t)}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.open span:nth-child(2){opacity:0}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* Hero */
.hero{min-height:100vh;background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 60%,#236b4a 100%);display:flex;align-items:center;padding-top:var(--nav-h);position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:60px 60px;pointer-events:none}
.hero .container{position:relative;z-index:1;padding-top:60px;padding-bottom:80px}
.hero-tag{display:inline-flex;align-items:center;gap:8px;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:rgba(255,255,255,.9);font-size:.82rem;padding:6px 14px;border-radius:100px;margin-bottom:24px}
.hero-tag .pulse{width:6px;height:6px;background:var(--primary-light);border-radius:50%;animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.3)}}
.hero-title{font-size:clamp(2rem,5vw,3.2rem);font-weight:800;color:#fff;line-height:1.2;letter-spacing:-.02em;margin-bottom:20px;max-width:720px}
.hero-title span{color:var(--primary-light)}
.hero-subtitle{font-size:1.1rem;color:rgba(255,255,255,.78);margin-bottom:40px;max-width:520px;line-height:1.8}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:8px;font-size:.95rem;font-weight:600;cursor:pointer;border:none;transition:all var(--t);line-height:1}
.btn-white{background:#fff;color:var(--primary)}
.btn-white:hover{background:var(--bg-gray);color:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-outline{background:transparent;color:#fff;border:1.5px solid rgba(255,255,255,.5)}
.btn-outline:hover{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.8);color:#fff;transform:translateY(-1px)}
.btn-green{background:var(--primary);color:#fff}
.btn-green:hover{background:var(--primary-dark);color:#fff;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-green-outline{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-green-outline:hover{background:var(--primary);color:#fff}

/* Stats */
.stats{background:var(--bg);border-bottom:1px solid var(--border)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stat-item{padding:48px 32px;text-align:center;border-right:1px solid var(--border);transition:background var(--t)}
.stat-item:last-child{border-right:none}
.stat-item:hover{background:var(--bg-light)}
.stat-number{font-size:2.6rem;font-weight:800;color:var(--primary);letter-spacing:-.03em;line-height:1;margin-bottom:8px}
.stat-label{font-size:.88rem;color:var(--muted)}

/* Services */
.services{background:var(--bg-light)}
.services-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.service-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px 32px;transition:all var(--t);position:relative;overflow:hidden}
.service-card::after{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--primary),var(--primary-light));transform:scaleX(0);transition:transform var(--t);transform-origin:left}
.service-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.service-card:hover::after{transform:scaleX(1)}
.service-icon{width:56px;height:56px;background:var(--bg-gray);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;margin-bottom:20px;font-size:1.6rem}
.service-card:hover .service-icon{background:#e8f5ee}
.service-title{font-size:1.15rem;font-weight:700;color:var(--dark);margin-bottom:12px}
.service-desc{font-size:.9rem;color:var(--muted);line-height:1.7;margin-bottom:16px}
.service-tags{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:20px}
.service-tag{font-size:.75rem;color:var(--primary);background:#e8f5ee;padding:3px 10px;border-radius:100px}
.service-link{font-size:.88rem;font-weight:600;color:var(--primary);display:inline-flex;align-items:center;gap:4px;transition:gap var(--t)}
.service-link:hover{gap:8px}

/* Certifications scroll */
.certs{background:var(--bg)}
.cert-wrap{overflow:hidden;position:relative}
.cert-wrap::before,.cert-wrap::after{content:"";position:absolute;top:0;bottom:0;width:80px;z-index:2;pointer-events:none}
.cert-wrap::before{left:0;background:linear-gradient(90deg,var(--bg),transparent)}
.cert-wrap::after{right:0;background:linear-gradient(-90deg,var(--bg),transparent)}
.cert-track{display:flex;gap:16px;animation:scroll 30s linear infinite;width:max-content}
.cert-track:hover{animation-play-state:paused}
@keyframes scroll{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}
.cert-badge{display:flex;align-items:center;gap:10px;background:var(--bg-light);border:1px solid var(--border);border-radius:100px;padding:12px 20px;white-space:nowrap;font-size:.88rem;font-weight:500;color:var(--dark);flex-shrink:0}
.cert-badge .dot{width:8px;height:8px;background:var(--primary);border-radius:50%;flex-shrink:0}

/* News */
.news{background:var(--bg-light)}
.news-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.news-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;transition:all var(--t)}
.news-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:var(--primary-light)}
.news-cover{width:100%;height:200px;object-fit:cover}
.news-cover-empty{width:100%;height:200px;background:linear-gradient(135deg,var(--bg-gray),var(--border));display:flex;align-items:center;justify-content:center;color:var(--light);font-size:2rem}
.news-body{padding:24px}
.news-meta{display:flex;align-items:center;gap:10px;margin-bottom:10px}
.news-date{font-size:.78rem;color:var(--light)}
.news-cat{font-size:.75rem;color:var(--primary);background:#e8f5ee;padding:2px 8px;border-radius:100px}
.news-title{font-size:1rem;font-weight:600;color:var(--dark);line-height:1.5;margin-bottom:10px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.news-excerpt{font-size:.86rem;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;margin-bottom:16px}
.news-read{font-size:.85rem;font-weight:600;color:var(--primary)}
.more-wrap{text-align:center;margin-top:40px}

/* Clients */
.clients{background:var(--bg);padding:60px 0}
.clients-label{text-align:center;font-size:.82rem;font-weight:600;color:var(--light);letter-spacing:.08em;text-transform:uppercase;margin-bottom:32px}
.clients-grid{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.client-chip{padding:12px 24px;background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius);font-size:.9rem;font-weight:600;color:var(--muted);transition:all var(--t)}
.client-chip:hover{border-color:var(--primary-light);color:var(--primary);background:#e8f5ee}

/* Footer */
.footer{background:var(--dark);color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand-row{display:flex;align-items:center;gap:8px;margin-bottom:16px}
.footer-brand-name{font-size:1rem;font-weight:700;color:#fff}
.footer-brand-dot{width:8px;height:8px;background:var(--primary-light);border-radius:50%}
.footer-about{font-size:.86rem;line-height:1.8;margin-bottom:20px}
.footer-contact{font-size:.84rem;color:rgba(255,255,255,.6);margin-bottom:6px}
.footer-col-title{font-size:.9rem;font-weight:700;color:#fff;margin-bottom:20px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{font-size:.84rem;color:rgba(255,255,255,.6);transition:color var(--t)}
.footer-links a:hover{color:var(--primary-light)}
.footer-cert{font-size:.82rem;color:rgba(255,255,255,.6);padding-left:12px;position:relative;margin-bottom:8px}
.footer-cert::before{content:"·";position:absolute;left:0;color:var(--primary-light)}
.footer-bottom{padding:20px 0;display:flex;align-items:center;justify-content:space-between;font-size:.8rem;color:rgba(255,255,255,.4);flex-wrap:wrap;gap:8px}
.footer-bottom a{color:rgba(255,255,255,.4)}
.footer-bottom a:hover{color:rgba(255,255,255,.7)}

/* Page Hero */
.page-hero{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:calc(var(--nav-h) + 48px) 0 64px;color:#fff;position:relative;overflow:hidden}
.page-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px);background-size:40px 40px}
.page-hero .container{position:relative;z-index:1}
.page-hero-eyebrow{font-size:.78rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--primary-light);margin-bottom:12px}
.page-hero-title{font-size:clamp(1.8rem,4vw,2.6rem);font-weight:800;letter-spacing:-.02em;margin-bottom:12px}
.page-hero-subtitle{font-size:1rem;color:rgba(255,255,255,.75);max-width:480px}

/* Breadcrumb */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:.84rem;color:var(--muted);margin-bottom:32px;flex-wrap:wrap}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:var(--border)}

/* Article */
.article-wrap{max-width:860px;margin:0 auto;padding:60px 0}
.article-header{margin-bottom:40px}
.article-cats{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:16px}
.article-cat{font-size:.78rem;color:var(--primary);background:#e8f5ee;padding:4px 12px;border-radius:100px}
.article-title{font-size:clamp(1.6rem,3vw,2.2rem);font-weight:800;color:var(--dark);line-height:1.3;margin-bottom:16px}
.article-meta{display:flex;align-items:center;gap:16px;font-size:.84rem;color:var(--light)}
.article-cover{width:100%;max-height:480px;object-fit:cover;border-radius:var(--radius-lg);margin-bottom:40px}
.article-content{font-size:1.02rem;line-height:1.9;color:var(--text)}
.article-content h1,.article-content h2,.article-content h3{font-weight:700;color:var(--dark);margin:2em 0 .8em;line-height:1.3}
.article-content h2{font-size:1.5rem;border-bottom:2px solid var(--bg-gray);padding-bottom:.4em}
.article-content h3{font-size:1.2rem}
.article-content p{margin-bottom:1.2em}
.article-content img{border-radius:var(--radius);margin:1.5em auto}
.article-content blockquote{border-left:4px solid var(--primary-light);padding:16px 20px;background:var(--bg-light);border-radius:0 var(--radius) var(--radius) 0;margin:1.5em 0;color:var(--muted)}
.article-content ul,.article-content ol{padding-left:1.5em;margin-bottom:1.2em}
.article-content li{margin-bottom:.4em}
.article-content ul li{list-style:disc}
.article-content ol li{list-style:decimal}
.article-content a{color:var(--primary);text-decoration:underline}
.article-content pre{background:var(--dark);color:#e2e8f0;padding:20px;border-radius:var(--radius);overflow-x:auto;margin:1.5em 0;font-size:.9rem}
.article-content code{background:var(--bg-gray);padding:2px 6px;border-radius:4px;font-size:.9em}
.article-content table{width:100%;border-collapse:collapse;margin:1.5em 0}
.article-content th,.article-content td{padding:12px 16px;border:1px solid var(--border);text-align:left}
.article-content th{background:var(--bg-light);font-weight:600}
.article-nav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:48px;padding-top:40px;border-top:1px solid var(--border)}
.article-nav-item{padding:20px;border:1px solid var(--border);border-radius:var(--radius-lg);transition:all var(--t)}
.article-nav-item:hover{border-color:var(--primary-light);background:var(--bg-light)}
.article-nav-label{font-size:.75rem;color:var(--light);margin-bottom:6px;text-transform:uppercase;letter-spacing:.05em}
.article-nav-title{font-size:.9rem;font-weight:600;color:var(--dark);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.article-nav-next{text-align:right}

/* Archives */
.archives-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.pagination{display:flex;align-items:center;justify-content:center;gap:8px;margin-top:48px}
.pagination a,.pagination span{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:6px;font-size:.88rem;font-weight:500;border:1px solid var(--border);color:var(--muted);transition:all var(--t)}
.pagination a:hover{border-color:var(--primary);color:var(--primary)}
.pagination .active{background:var(--primary);color:#fff;border-color:var(--primary)}

/* About page */
.about-intro{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center}
.about-intro-text h2{font-size:1.8rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.about-intro-text p{color:var(--muted);line-height:1.9;margin-bottom:12px}
.about-intro-img{border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-gray);min-height:360px;display:flex;align-items:center;justify-content:center;font-size:4rem}
.timeline{position:relative;padding-left:32px}
.timeline::before{content:"";position:absolute;left:8px;top:0;bottom:0;width:2px;background:var(--border)}
.timeline-item{position:relative;margin-bottom:36px}
.timeline-item::before{content:"";position:absolute;left:-28px;top:6px;width:12px;height:12px;background:var(--primary);border-radius:50%;border:2px solid var(--bg)}
.timeline-year{font-size:.82rem;font-weight:700;color:var(--primary);margin-bottom:4px;letter-spacing:.05em}
.timeline-content h4{font-size:1rem;font-weight:600;color:var(--dark);margin-bottom:4px}
.timeline-content p{font-size:.88rem;color:var(--muted);line-height:1.6}
.certs-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cert-card{background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center;transition:all var(--t)}
.cert-card:hover{border-color:var(--primary-light);background:#e8f5ee}
.cert-card-icon{font-size:2rem;margin-bottom:10px}
.cert-card-title{font-size:.88rem;font-weight:600;color:var(--dark);line-height:1.4}
.cert-card-org{font-size:.78rem;color:var(--muted);margin-top:4px}

/* Services page */
.service-section{padding:80px 0}
.service-section:nth-child(even){background:var(--bg-light)}
.service-detail{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.service-detail.reverse{direction:rtl}
.service-detail.reverse > *{direction:ltr}
.service-detail-visual{background:linear-gradient(135deg,var(--primary-dark),var(--primary));border-radius:var(--radius-lg);padding:40px;color:#fff;min-height:300px;display:flex;flex-direction:column;justify-content:space-between}
.service-detail-icon{font-size:3rem;margin-bottom:16px}
.service-detail-visual h3{font-size:1.4rem;font-weight:700;margin-bottom:8px}
.service-detail-visual p{font-size:.9rem;color:rgba(255,255,255,.8);line-height:1.7}
.service-detail-content h2{font-size:1.6rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.service-detail-content p{color:var(--muted);line-height:1.9;margin-bottom:16px}
.service-items{display:flex;flex-direction:column;gap:12px;margin-top:20px}
.service-item{display:flex;gap:12px;align-items:flex-start}
.service-item-dot{width:24px;height:24px;background:#e8f5ee;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px;color:var(--primary);font-size:.7rem;font-weight:700}
.service-item-text h4{font-size:.95rem;font-weight:600;color:var(--dark);margin-bottom:2px}
.service-item-text p{font-size:.86rem;color:var(--muted);line-height:1.6}

/* Cases page */
.cases-filter{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:40px;justify-content:center}
.filter-btn{padding:8px 20px;border-radius:100px;font-size:.88rem;font-weight:500;border:1px solid var(--border);background:var(--bg);color:var(--muted);cursor:pointer;transition:all var(--t)}
.filter-btn:hover,.filter-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.cases-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.case-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:28px;transition:all var(--t)}
.case-card:hover{border-color:var(--primary-light);box-shadow:var(--shadow);transform:translateY(-2px)}
.case-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}
.case-year{font-size:.75rem;font-weight:600;color:var(--light)}
.case-type{font-size:.72rem;color:var(--primary);background:#e8f5ee;padding:3px 10px;border-radius:100px}
.case-client{font-size:1.05rem;font-weight:700;color:var(--dark);margin-bottom:8px}
.case-project{font-size:.88rem;color:var(--muted);line-height:1.6}

/* Contact page */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:start}
.contact-info h2{font-size:1.6rem;font-weight:700;color:var(--dark);margin-bottom:16px}
.contact-info p{color:var(--muted);line-height:1.9;margin-bottom:32px}
.contact-items{display:flex;flex-direction:column;gap:20px}
.contact-item{display:flex;gap:16px;align-items:flex-start}
.contact-item-icon{width:44px;height:44px;background:#e8f5ee;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0;font-size:1.2rem}
.contact-item-label{font-size:.78rem;color:var(--light);margin-bottom:2px}
.contact-item-val{font-size:.95rem;font-weight:600;color:var(--dark)}
.contact-form{background:var(--bg-light);border:1px solid var(--border);border-radius:var(--radius-lg);padding:40px}
.contact-form h3{font-size:1.2rem;font-weight:700;color:var(--dark);margin-bottom:24px}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.88rem;font-weight:500;color:var(--dark);margin-bottom:6px}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:11px 14px;border:1px solid var(--border);border-radius:var(--radius);font-family:var(--font);font-size:.92rem;color:var(--text);background:var(--bg);transition:border-color var(--t)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--primary)}
.form-group textarea{min-height:120px;resize:vertical}

/* Animations */
.fade-in{opacity:0;transform:translateY(20px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:768px){
  .navbar-nav{display:none;position:absolute;top:var(--nav-h);left:0;right:0;background:var(--bg);border-top:1px solid var(--border);padding:16px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow)}
  .navbar-nav.open{display:flex}
  .navbar-nav a{padding:10px 16px}
  .navbar-nav .cta{margin:8px 0 0;text-align:center}
  .nav-toggle{display:flex}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
  .stat-item{border-right:none;border-bottom:1px solid var(--border)}
  .stat-item:nth-child(odd){border-right:1px solid var(--border)}
  .stat-item:nth-child(3),.stat-item:nth-child(4){border-bottom:none}
  .services-grid,.news-grid,.archives-grid,.cases-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .about-intro,.service-detail,.contact-grid{grid-template-columns:1fr}
  .service-detail.reverse{direction:ltr}
  .article-nav{grid-template-columns:1fr}
  .certs-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .section{padding:56px 0}
  .section-title{font-size:1.6rem}
  .footer-grid{grid-template-columns:1fr}
  .stats-grid{grid-template-columns:1fr}
  .stat-item{border-right:none}
}