:root{
  --navy-900:#0b1220;--navy-800:#102033;--navy-600:#173049;
  --teal:#00c2a8;--teal-700:#0F6E56;--teal-50:#f3fbfa;
  --bg:#ffffff;--bg-soft:#f6f9fb;--text:#1f2d2d;--muted:#5f6f6f;
  --border:#e3eeec;--radius:12px;--shadow:0 6px 24px rgba(16,32,51,.08);
}
*{box-sizing:border-box}
body{margin:0;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--text);background:var(--bg);line-height:1.7}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.narrow{max-width:860px}

/* 导航 */
.site-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px}
.logo{width:34px;height:34px;border-radius:9px;background:var(--teal);color:#fff;display:grid;place-items:center;font-weight:700}
.nav-links{display:flex;align-items:center;gap:22px}
.nav-links a{color:var(--muted);font-size:15px;transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--teal-700)}
.nav-cta{margin-left:8px}
.btn{display:inline-block;padding:10px 22px;border-radius:9px;font-size:15px;cursor:pointer;border:1px solid transparent;transition:.2s}
.btn-primary{background:var(--teal-700);color:#fff}.btn-primary:hover{background:var(--teal)}
.btn-ghost{background:transparent;color:var(--teal-700);border-color:var(--teal)}
.btn-outline{background:#fff;color:var(--teal-700);border-color:var(--teal)}
.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:0;cursor:pointer}
.nav-toggle span{width:22px;height:2px;background:var(--text)}

/* Hero */
.hero{position:relative;padding:90px 0 70px;background:linear-gradient(135deg,var(--navy-800),var(--navy-600));color:#fff;overflow:hidden}
.hero-bg{position:absolute;inset:0;background:radial-gradient(circle at 80% 20%,rgba(0,194,168,.25),transparent 60%);opacity:.7}
.hero .container{position:relative}
.hero-eyebrow{display:inline-block;font-size:13px;color:var(--teal);letter-spacing:.5px;margin-bottom:14px}
.hero h1{font-size:42px;line-height:1.2;margin:0 0 18px}
.hero h1 .hl{color:var(--teal)}
.lead{font-size:17px;max-width:640px;color:#d6e2e6;margin:0 0 26px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{display:flex;gap:40px;margin-top:46px;flex-wrap:wrap}
.stat .num{font-size:30px;font-weight:700;color:#fff}
.stat .num span{font-size:18px;color:var(--teal)}
.stat .label{font-size:13px;color:#a9bcc2}

/* Section */
.section{padding:70px 0}
.section.soft{background:var(--bg-soft)}
.section-head{text-align:center;max-width:680px;margin:0 auto 44px}
.section-head .eyebrow{display:inline-block;color:var(--teal-700);font-size:13px;letter-spacing:1px;margin-bottom:8px}
.section-head h2{font-size:30px;margin:0 0 10px}
.section-head p{color:var(--muted);margin:0}

/* Grid */
.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);transition:.2s}
.card:hover{transform:translateY(-3px)}
.card h3{margin:0 0 10px;font-size:18px}
.card p{color:var(--muted);margin:0 0 12px;font-size:14.5px}
.more{color:var(--teal-700);font-size:14px;font-weight:600}
.service-detail{background:#fff}
.service-detail .checks{margin-top:12px}
.chip{display:inline-block;background:var(--teal-50);color:var(--teal-700);font-size:12px;padding:3px 10px;border-radius:20px;margin:0 6px 6px 0}
.price-range{font-size:26px;font-weight:700;color:var(--teal-700);margin:6px 0 12px}
.price-range .cur{font-size:16px}.price-range .unit{font-size:13px;color:var(--muted);font-weight:400}
.price-note{margin-top:26px;color:var(--muted);text-align:center;font-size:14px}

/* Split */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.checks{list-style:none;padding:0;margin:16px 0 0}
.checks li{position:relative;padding-left:28px;margin-bottom:10px;color:var(--muted)}
.checks li svg{position:absolute;left:0;top:4px;width:18px;height:18px;color:var(--teal)}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.stat-box{background:var(--bg-soft);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center}
.stat-box .num{font-size:24px;font-weight:700;color:var(--teal-700)}
.stat-box .lbl{font-size:13px;color:var(--muted)}

/* CTA */
.cta-band{background:linear-gradient(135deg,var(--navy-800),var(--navy-600));color:#fff;text-align:center;padding:48px 24px;border-radius:18px}
.cta-band h2{margin:0 0 10px;font-size:26px}
.cta-band p{color:#cdd9de;margin:0 0 22px}

/* FAQ */
.faq{max-width:760px;margin:0 auto}
.faq-item{background:#fff;border:1px solid var(--border);border-radius:10px;margin-bottom:12px;padding:4px 18px}
.faq-item summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq-item .plus{width:16px;height:16px;position:relative}
.faq-item .plus::before,.faq-item .plus::after{content:"";position:absolute;background:var(--teal-700);transition:.2s}
.faq-item .plus::before{top:7px;left:0;width:16px;height:2px}
.faq-item .plus::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .plus::after{opacity:0}
.faq-a{padding:0 0 14px;color:var(--muted);font-size:14.5px}

/* Breadcrumb */
.breadcrumb{background:var(--bg-soft);border-bottom:1px solid var(--border);padding:12px 0;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--teal-700)}
.breadcrumb .sep{margin:0 8px;color:#c2cfcd}

/* Article */
.article-wrap{max-width:820px;padding:36px 20px}
.article-header h1{font-size:30px;margin:10px 0 12px}
.news-cat{display:inline-block;background:var(--teal-50);color:var(--teal-700);font-size:12px;padding:3px 12px;border-radius:20px}
.article-meta{color:var(--muted);font-size:14px;display:flex;gap:16px;margin-bottom:20px}
.article-body{font-size:16px;line-height:1.9}
.author-lead{background:var(--teal-50);border-left:4px solid var(--teal);border-radius:0 8px 8px 0;padding:14px 18px;color:#3a4a4a;font-size:15px;margin:22px 0}
.author-signoff{border-top:1px dashed var(--border);padding-top:14px;color:var(--muted);font-size:13.5px;margin:20px 0 8px}
.author-signoff strong{color:var(--teal-700)}
.article-author-card{display:flex;align-items:center;gap:14px;margin:18px 0;padding:16px 18px;background:var(--bg-soft);border:1px solid var(--border);border-radius:10px}
.author-avatar{width:48px;height:48px;border-radius:50%;background:var(--teal);color:#fff;display:grid;place-items:center;font-size:20px;font-weight:700;flex:0 0 auto}
.author-info strong{display:block;color:var(--text);font-size:15px}
.author-info span{color:var(--muted);font-size:13px}
.article-cta{background:var(--teal-50);border-radius:10px;padding:18px;text-align:center;margin-top:8px}
.article-cta p{margin:0 0 12px}
.article-cta strong{color:var(--teal-700)}
.btn-contact{display:inline-block;background:var(--teal-700);color:#fff;padding:10px 24px;border-radius:9px}

/* Contact */
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{padding:10px 0;border-bottom:1px solid var(--border);color:var(--muted)}
.contact-list strong{color:var(--text)}
.contact-form{display:flex;flex-direction:column;gap:14px;background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.contact-form label{display:flex;flex-direction:column;gap:6px;font-size:14px;color:var(--muted)}
.contact-form input,.contact-form textarea{padding:10px 12px;border:1px solid var(--border);border-radius:8px;font:inherit}
.form-ok{background:#e8f5e9;color:#0F6E56;padding:12px 16px;border-radius:8px;margin-bottom:16px}
.form-warn{background:#fce4ec;color:#993c1d;padding:12px 16px;border-radius:8px;margin-bottom:16px}

/* Footer */
.site-footer{background:var(--navy-900);color:#cdd9de;padding:54px 0 26px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:30px}
.footer-brand p{color:#8ea1a8;font-size:14px;margin-top:12px}
.footer h4{color:#fff;font-size:15px;margin:0 0 14px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:8px}
.footer-links a,.footer-contact li{color:#a9bcc2;font-size:14px}
.footer-contact{list-style:none;padding:0;margin:0}
.footer-contact li{margin-bottom:8px}
.footer-flinks{border-top:1px solid rgba(255,255,255,.1);margin-top:30px;padding-top:18px;font-size:13px;color:#8ea1a8}
.footer-flinks a{color:#a9bcc2;margin-right:14px}
.footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;border-top:1px solid rgba(255,255,255,.1);margin-top:20px;padding-top:18px;font-size:13px;color:#8ea1a8}
.footer-bottom a{color:#a9bcc2}
.to-top{position:fixed;right:20px;bottom:20px;width:42px;height:42px;border-radius:50%;border:0;background:var(--teal-700);color:#fff;cursor:pointer;display:none}

/* Reveal */
.reveal{opacity:0;transform:translateY(16px);transition:.6s ease}
.reveal{opacity:1;transform:none}

/* Responsive */
@media(max-width:900px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .nav-links{display:none}.nav-toggle{display:flex}
  .hero h1{font-size:32px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}