:root{
  --green-900:#0c3a2c;
  --green-700:#147a4f;
  --green-600:#1c8f5e;
  --green-500:#27a96f;
  --green-100:#e7f5ee;
  --green-50:#f3faf6;
  --gold:#c9a24b;
  --ink:#1d2a26;
  --muted:#5d6b66;
  --line:#e3ece8;
  --bg:#ffffff;
  --bg-soft:#f4faf7;
  --shadow:0 8px 30px rgba(12,58,44,.08);
  --radius:16px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--green-700);text-decoration:none}
a:hover{color:var(--green-600)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.section{padding:72px 0}
.section.soft{background:var(--bg-soft)}
.section-title{font-size:30px;font-weight:800;color:var(--green-900);text-align:center;margin-bottom:10px;letter-spacing:.5px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:42px;font-size:16px}
.eyebrow{display:inline-block;color:var(--green-600);font-weight:700;font-size:13px;letter-spacing:2px;text-transform:uppercase;margin-bottom:8px}

/* 内页主标题 H1（SEO：每页唯一 H1） */
h1.section-title{font-size:30px;font-weight:800;color:var(--green-900);text-align:center;margin-bottom:10px;letter-spacing:.5px;line-height:1.3}

/* 面包屑导航 */
.breadcrumb{max-width:var(--maxw);margin:0 auto;padding:16px 20px 0;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--green-700);text-decoration:none}
.breadcrumb a:hover{color:var(--green-600)}
.breadcrumb .sep{margin:0 9px;color:#c2cfc9}
.breadcrumb .current{color:var(--ink);font-weight:600}

/* Header */
header.site{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;color:var(--green-900);font-size:18px}
.brand img{height:38px;width:auto}
.nav-links{display:flex;gap:26px;align-items:center;list-style:none}
.nav-links a{color:var(--ink);font-weight:600;font-size:15px}
.nav-links a:hover{color:var(--green-600)}
.nav-cta{background:var(--green-600);color:#fff!important;padding:9px 18px;border-radius:999px;font-weight:700;font-size:14px}
.nav-cta:hover{background:var(--green-700)}
.menu-btn{display:none;background:none;border:0;font-size:26px;color:var(--green-900);cursor:pointer}

/* Hero */
.hero{position:relative;background:linear-gradient(135deg,var(--green-900),var(--green-700) 60%,var(--green-600));color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;right:-80px;top:-80px;width:420px;height:420px;background:radial-gradient(circle,rgba(255,255,255,.12),transparent 70%)}
.hero .wrap{position:relative;z-index:2;padding:88px 20px 76px}
.hero h1{font-size:42px;line-height:1.25;font-weight:800;margin-bottom:18px}
.hero h1 .hl{color:#ffd98a}
.hero p.lead{font-size:19px;max-width:640px;color:rgba(255,255,255,.92);margin-bottom:30px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 26px;border-radius:999px;font-weight:700;font-size:16px;transition:.2s}
.btn-primary{background:#fff;color:var(--green-800,#0c3a2c)}
.btn-primary:hover{background:#eafaf1;color:var(--green-700)}
.btn-gold{background:var(--gold);color:#3a2c08}
.btn-gold:hover{background:#d8b25c}
.btn-outline{border:1.5px solid rgba(255,255,255,.6);color:#fff}
.btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.1)}
.badges{display:flex;gap:14px;flex-wrap:wrap;margin-top:36px}
.badge{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);padding:12px 18px;border-radius:12px;min-width:130px}
.badge .num{font-size:24px;font-weight:800;color:#ffd98a}
.badge .lbl{font-size:13px;color:rgba(255,255,255,.85)}

/* Cards / grid */
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-4px);box-shadow:0 14px 40px rgba(12,58,44,.12)}
.card h3{color:var(--green-900);font-size:19px;margin-bottom:10px}
.card p{color:var(--muted);font-size:15px}
.card .ico{width:48px;height:48px;border-radius:12px;background:var(--green-100);color:var(--green-700);display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:14px}
.kpi{text-align:center;padding:10px}
.kpi .num{font-size:34px;font-weight:800;color:var(--green-700)}
.kpi .lbl{color:var(--muted);font-size:14px}

/* Service price */
.price-box{background:var(--green-50);border:1px dashed var(--green-500);border-radius:var(--radius);padding:28px;text-align:center}
.price-box .price{font-size:40px;font-weight:800;color:var(--green-700)}
.price-box .unit{font-size:18px;color:var(--muted)}
.note{font-size:14px;color:var(--muted);margin-top:8px}

/* Process */
.steps{counter-reset:step}
.step{display:flex;gap:18px;align-items:flex-start;padding:18px 0;border-bottom:1px dashed var(--line)}
.step .n{counter-increment:step;flex:0 0 46px;width:46px;height:46px;border-radius:50%;background:var(--green-700);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:18px}
.step .n::before{content:counter(step)}
.step h4{color:var(--green-900);font-size:17px;margin-bottom:4px}
.step p{color:var(--muted);font-size:15px}

/* Cases */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.case{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);box-shadow:var(--shadow);background:#fff}
.case img{height:210px;width:100%;object-fit:cover}
.case .meta{padding:16px 18px}
.case .tag{display:inline-block;background:var(--green-100);color:var(--green-700);font-size:12px;font-weight:700;padding:3px 10px;border-radius:999px;margin-bottom:8px}
.case h4{font-size:16px;color:var(--green-900);margin-bottom:4px}
.case p{font-size:13px;color:var(--muted)}

/* Credentials */
.cred{display:flex;gap:14px;align-items:center;padding:16px;background:var(--green-50);border-radius:12px;border:1px solid var(--line)}
.cred .dot{width:12px;height:12px;border-radius:50%;background:var(--gold);flex:0 0 auto}
.cred span{font-weight:600;color:var(--ink)}

/* FAQ */
.faq-item{border:1px solid var(--line);border-radius:12px;margin-bottom:12px;background:#fff;overflow:hidden}
.faq-q{width:100%;text-align:left;background:none;border:0;padding:18px 22px;font-size:16px;font-weight:700;color:var(--green-900);cursor:pointer;display:flex;justify-content:space-between;gap:12px;align-items:center}
.faq-q .arr{transition:.2s;color:var(--green-600);font-size:20px}
.faq-item.open .faq-q .arr{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 22px;color:var(--muted);font-size:15px}
.faq-item.open .faq-a{max-height:400px;padding:0 22px 18px}

/* Contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:36px}
.info-row{display:flex;gap:12px;padding:14px 0;border-bottom:1px dashed var(--line)}
.info-row .k{font-weight:700;color:var(--green-900);min-width:84px}
.info-row .v{color:var(--ink)}
.map{width:100%;height:320px;border-radius:var(--radius);border:1px solid var(--line);background:var(--green-50);display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:14px;text-align:center;padding:20px}

/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--green-800,#0c3a2c),var(--green-600));color:#fff;text-align:center;padding:54px 20px;border-radius:24px}
.cta-band h2{font-size:30px;margin-bottom:12px}
.cta-band p{color:rgba(255,255,255,.9);margin-bottom:24px}

/* Footer */
footer.site{background:var(--green-900);color:rgba(255,255,255,.8);padding:48px 0 26px;margin-top:0}
.foot-grid{display:grid;grid-template-columns:1.3fr .9fr .9fr 1.1fr .9fr;gap:24px}
footer h4{color:#fff;font-size:16px;margin-bottom:14px}
footer a{color:rgba(255,255,255,.78);font-size:14px;display:block;padding:4px 0}
footer a:hover{color:#ffd98a}
.foot-contact p{font-size:14px;padding:3px 0}
.foot-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:32px;padding-top:18px;font-size:13px;color:rgba(255,255,255,.6);text-align:center}

/* Floating call */
.float-call{position:fixed;right:18px;bottom:84px;z-index:60;background:var(--green-600);color:#fff;width:56px;height:56px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:24px;box-shadow:0 8px 24px rgba(20,122,79,.5)}
.float-call:hover{background:var(--green-700);color:#fff}

/* Responsive */
@media(max-width:900px){
  .grid-3,.grid-4,.case-grid{grid-template-columns:repeat(2,1fr)}
  .contact-wrap{grid-template-columns:1fr}
  .foot-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:640px){
  .nav-links{position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;gap:0;padding:8px 20px 16px;border-bottom:1px solid var(--line);display:none}
  .nav-links.show{display:flex}
  .nav-links a{padding:12px 0;border-bottom:1px solid var(--line);width:100%}
  .menu-btn{display:block}
  .hero h1{font-size:30px}
  .hero p.lead{font-size:17px}
  .grid-3,.grid-4,.grid-2,.case-grid{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section-title{font-size:25px}
  h1.section-title{font-size:25px}
  .breadcrumb{font-size:12px;padding-top:12px}
  .foot-grid{grid-template-columns:1fr}
  .float-call{bottom:18px}
}

/* WeChat / QR */
.wechat-box{text-align:center;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow)}
.wechat-box img.qr{max-width:186px;margin:0 auto 14px;border-radius:12px;border:1px solid var(--line)}
.wechat-box p{font-size:15px;color:var(--muted);margin-top:6px}
.wechat-box .wxid{font-size:20px;font-weight:800;color:var(--green-900);letter-spacing:1px}
.qr-thumb{max-width:96px;border-radius:8px;background:#fff;padding:4px}
footer .qr-thumb{margin-top:6px}

/* Articles */
.article-index{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:28px}
.article-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;box-shadow:var(--shadow);transition:.2s}
.article-card:hover{transform:translateY(-3px);box-shadow:0 12px 34px rgba(12,58,44,.11)}
.article-card a{display:block;color:var(--green-900);font-weight:700;font-size:15px;margin-bottom:8px}
.article-card p{font-size:13px;color:var(--muted);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.article-section{max-width:820px;margin:0 auto 42px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px 32px;box-shadow:var(--shadow)}
.article-section h3{font-size:20px;color:var(--green-900);margin-bottom:14px;padding-bottom:10px;border-bottom:2px solid var(--green-100)}
.article-section p{margin-bottom:12px;color:var(--ink);font-size:15.5px}
.article-section ul{margin:10px 0 10px 20px;color:var(--muted)}
@media(max-width:900px){
  .article-index{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .article-index{grid-template-columns:1fr}
  .article-section{padding:20px}
}
/* ===== 30篇独立文章页 ===== */
.art-group{margin-bottom:30px}
.art-group>h3{font-size:19px;color:var(--green-900);margin-bottom:14px;padding-left:12px;border-left:4px solid var(--green-600)}
.art-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
.article-card .num{display:inline-block;min-width:34px;font-size:12px;font-weight:800;color:#fff;background:var(--green-600);border-radius:8px;text-align:center;padding:2px 6px;margin-right:8px;vertical-align:1px}
.article-page{max-width:820px;margin:0 auto 30px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:34px 38px;box-shadow:var(--shadow)}
.article-title{font-size:26px;line-height:1.45;color:var(--green-950);margin-bottom:14px}
.article-meta{font-size:13px;color:var(--muted);padding-bottom:16px;margin-bottom:20px;border-bottom:1px solid var(--line)}
.article-page p{font-size:16px;line-height:1.95;color:var(--ink);margin-bottom:18px}
.article-brand{margin-top:24px;padding:16px 18px;background:var(--green-50,#f0f7f4);border-left:4px solid var(--green-600);border-radius:10px;font-size:14.5px!important;color:var(--green-900)!important;line-height:1.8!important}
.pager{display:flex;justify-content:space-between;gap:16px;max-width:820px;margin:0 auto 8px}
.pager a{color:var(--green-700);font-weight:600;font-size:14.5px;text-decoration:underline}
.pager .dim{color:var(--muted);font-size:14px}
.rel-list{list-style:none;padding:0;margin:6px 0 0;display:grid;grid-template-columns:repeat(2,1fr);gap:6px 18px}
.rel-list li{padding:7px 0;border-bottom:1px dashed var(--line)}
.rel-list a{color:var(--green-800);font-size:14.5px}
.rel-list a:hover{color:var(--green-600)}
@media(max-width:640px){
  .art-grid{grid-template-columns:1fr}
  .article-page{padding:22px 18px}
  .article-title{font-size:21px}
  .rel-list{grid-template-columns:1fr}
  .pager{flex-direction:column}
}