:root{
  --primary:#1e56d6;--primary-dark:#123a9e;--accent:#0fb98a;
  --ink:#17233d;--muted:#5c6b85;--bg:#f5f7fb;--card:#fff;
  --radius:14px;--shadow:0 8px 30px rgba(23,50,120,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;font-size:16px}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
img{max-width:100%}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.center{text-align:center;margin-top:36px}

/* header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);box-shadow:0 1px 0 rgba(0,0,0,.06)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.logo{display:flex;align-items:center;gap:10px}
.logo-mark{width:42px;height:42px;border-radius:10px;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700}
.logo-text{font-weight:700;font-size:19px;display:flex;flex-direction:column;line-height:1.2}
.logo-text small{font-weight:400;font-size:11px;color:var(--muted)}
.nav{display:flex;align-items:center;gap:28px;font-size:15px}
.nav a{color:var(--ink);padding:6px 0;position:relative}
.nav a:hover,.nav a.active{color:var(--primary)}
.nav a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--primary)}
.btn-nav{background:linear-gradient(135deg,var(--primary),#3d7bff);color:#fff!important;padding:9px 20px;border-radius:999px}
.menu-toggle{display:none;background:none;border:none;font-size:24px;cursor:pointer;color:var(--ink)}

/* hero */
.hero{background:linear-gradient(120deg,#0b2a7a 0%,#1e56d6 55%,#0fb98a 130%);color:#fff;padding:80px 0;overflow:hidden}
.hero-inner{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.hero-tag{display:inline-block;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.3);padding:5px 14px;border-radius:999px;font-size:13px;margin-bottom:18px}
.hero h1{font-size:42px;line-height:1.25;margin-bottom:16px}
.hero h1 em{font-style:normal;color:#7ff3cd}
.hero-sub{color:rgba(255,255,255,.85);margin-bottom:28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.btn{display:inline-block;padding:12px 26px;border-radius:999px;font-size:15px;transition:.25s}
.btn-primary{background:#fff;color:var(--primary);font-weight:600}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.2)}
.btn-ghost{border:1px solid rgba(255,255,255,.6);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.hero-stats strong{font-size:26px;display:block}
.hero-stats strong span{font-size:15px}
.hero-stats span{font-size:13px;color:rgba(255,255,255,.75)}
.hero-card{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.25);border-radius:20px;padding:26px;backdrop-filter:blur(6px)}
.card-line{border-bottom:1px solid rgba(255,255,255,.25);padding-bottom:14px;margin-bottom:16px;font-weight:600}
.card-row{display:flex;gap:14px;align-items:center;padding:12px 0}
.card-row i{font-style:normal;width:34px;height:34px;border-radius:9px;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;font-size:13px;flex:none}
.card-row b{display:block;font-size:15px}
.card-row em{font-style:normal;font-size:12px;color:rgba(255,255,255,.7)}

/* sections */
.section{padding:76px 0}
.section-alt{background:#fff}
.section-head{text-align:center;margin-bottom:44px}
.section-head h2{font-size:30px;position:relative;display:inline-block;padding-bottom:12px}
.section-head h2::after{content:"";position:absolute;left:50%;transform:translateX(-50%);bottom:0;width:44px;height:3px;border-radius:3px;background:linear-gradient(90deg,var(--primary),var(--accent))}
.section-head p{color:var(--muted);margin-top:10px}
.grid{display:grid;gap:22px}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-5{grid-template-columns:repeat(5,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.svc-card{background:var(--card);border-radius:var(--radius);padding:30px 24px;box-shadow:var(--shadow);transition:.3s;border:1px solid transparent}
.svc-card:hover{transform:translateY(-6px);border-color:var(--primary)}
.svc-ico{font-size:30px;margin-bottom:14px}
.svc-card h3{font-size:18px;margin-bottom:8px}
.svc-card p{font-size:14px;color:var(--muted)}
.adv-item{text-align:center;padding:22px 12px;border-radius:var(--radius);background:#fff;box-shadow:var(--shadow)}
.adv-item strong{color:var(--primary);font-size:17px;display:block;margin-bottom:6px}
.adv-item p{font-size:13px;color:var(--muted)}
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:f}
.flow li{text-align:center;background:#fff;border-radius:var(--radius);padding:28px 18px;box-shadow:var(--shadow)}
.flow span{display:flex;width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:700;align-items:center;justify-content:center;margin:0 auto 12px;font-size:18px}
.flow b{display:block;font-size:16px}
.flow em{font-style:normal;font-size:13px;color:var(--muted)}
.faq details{background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:20px 24px;margin-bottom:14px}
.faq summary{font-weight:600;cursor:pointer}
.faq p{margin-top:10px;color:var(--muted);font-size:15px}

/* article & page */
.page-head{background:linear-gradient(120deg,#0b2a7a,#1e56d6);color:#fff;text-align:center;padding:56px 0}
.page-head h1{font-size:30px}
.page-head p{opacity:.8;margin-top:8px;font-size:14px}
.article{background:#fff;max-width:900px;margin:0 auto;padding:40px;border-radius:var(--radius);box-shadow:var(--shadow)}
.article h2{font-size:22px;margin:28px 0 12px;padding-left:12px;border-left:4px solid var(--primary)}
.article h2:first-child{margin-top:0}
.article p{color:#3a4a66;margin-bottom:12px}
.article ul{list-style:disc;padding-left:22px;color:#3a4a66}
.article ul li{margin-bottom:6px}
.price{width:100%;border-collapse:collapse;margin:18px 0}
.price th,.price td{border:1px solid #e3e9f4;padding:10px 14px;font-size:14px;text-align:left}
.price th{background:#f0f4fc;color:var(--primary-dark)}
.news-item{display:block;background:#fff;border-radius:var(--radius);box-shadow:var(--shadow);padding:22px 26px;margin-bottom:16px;transition:.25s}
.news-item:hover{transform:translateX(6px)}
.news-item time{font-size:13px;color:var(--muted)}
.news-item h3{font-size:17px;margin:4px 0}
.news-item p{font-size:14px;color:var(--muted)}
.contact-box{background:linear-gradient(135deg,#1e56d6,#0fb98a);color:#fff;border-radius:var(--radius);padding:36px;text-align:center;margin-top:36px}
.contact-box .btn{background:#fff;color:var(--primary);font-weight:600;margin-top:14px}

/* footer */
.site-footer{background:#101c38;color:#a9b6d0;padding:56px 0 0;font-size:14px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:36px;padding-bottom:40px}
.site-footer h3{color:#fff;font-size:18px;margin-bottom:12px}
.site-footer h4{color:#fff;font-size:15px;margin-bottom:12px}
.site-footer ul li{margin-bottom:8px}
.site-footer a:hover{color:#fff}
.contact-line{line-height:2}
.copyright{border-top:1px solid rgba(255,255,255,.1);padding:18px 20px;text-align:center;font-size:13px}

/* responsive */
@media(max-width:960px){
  .hero-inner{grid-template-columns:1fr}
  .hero-card{display:none}
  .hero h1{font-size:32px}
  .grid-4{grid-template-columns:repeat(2,1fr)}
  .grid-5{grid-template-columns:repeat(2,1fr)}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .flow{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:640px){
  .menu-toggle{display:block}
  .nav{position:fixed;top:68px;right:-100%;width:72%;height:calc(100vh - 68px);background:#fff;flex-direction:column;align-items:flex-start;padding:30px;gap:20px;box-shadow:-6px 0 24px rgba(0,0,0,.1);transition:right .3s}
  .nav.open{right:0}
  .hero{padding:56px 0}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .grid-4,.grid-5,.flow,.grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .article{padding:26px 20px}
  .section{padding:56px 0}
}