:root{
  --brand:#1e63c9;--brand-d:#0f478f;--brand-l:#eaf1fb;
  --ink:#1f2937;--muted:#64748b;--line:#e7edf5;--card:#fff;
  --radius:14px;--shadow:0 12px 30px -16px rgba(15,71,143,.28);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
a{text-decoration:none;color:inherit}
main{display:block}
/* HERO */
.hero{background:linear-gradient(135deg,#eef4fb 0%,#dce9fb 55%,#eaf1fb 100%);border-bottom:1px solid var(--line);padding:54px 0 50px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);color:var(--brand);font-weight:700;font-size:13px;padding:6px 14px;border-radius:999px;margin-bottom:16px}
.eyebrow::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--brand)}
.hero h1{font-size:clamp(28px,4vw,44px);line-height:1.18;font-weight:800;letter-spacing:.3px}
.hero h1 em{font-style:normal;color:var(--brand)}
.hero p{margin:16px 0 24px;font-size:clamp(15px,2vw,17px);color:var(--muted);max-width:62ch}
.hero .actions{display:flex;gap:14px;flex-wrap:wrap}
/* STEPS */
.sec{padding:64px 0}
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin:8px 0}
.step{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.step .n{width:38px;height:38px;border-radius:10px;background:var(--brand-l);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:18px;margin-bottom:12px}
.step b{display:block;font-size:16px;margin-bottom:4px}
.step span{font-size:13.5px;color:var(--muted)}
/* SECTION HEAD */
.sec-head{margin-bottom:26px}
.sec-head .tag{display:inline-block;font-size:12px;font-weight:800;letter-spacing:1.5px;color:var(--brand);background:var(--brand-l);padding:5px 12px;border-radius:7px;margin-bottom:12px}
.sec-head h2{font-size:clamp(24px,3vw,32px);font-weight:800;color:var(--brand-d)}
.sec-head p{margin-top:8px;color:var(--muted);font-size:15px;max-width:70ch}
/* PRICE */
.group{margin-bottom:34px}
.group h3{font-size:19px;font-weight:800;color:var(--brand-d);margin-bottom:14px;display:flex;align-items:center;gap:10px}
.group h3::before{content:"";width:5px;height:20px;border-radius:3px;background:var(--brand)}
table.price{width:100%;border-collapse:collapse;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;font-size:14px}
table.price th,table.price td{padding:13px 16px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
table.price thead th{background:var(--brand-d);color:#fff;font-weight:700;font-size:13.5px}
table.price tbody tr:last-child td{border-bottom:0}
table.price tbody tr:hover{background:#f6f9fe}
table.price td.name{font-weight:700;color:var(--ink)}
.pv{font-weight:800;color:var(--brand-d);font-size:15px}
.pv small{display:block;font-weight:500;color:var(--muted);font-size:12px;margin-top:2px}
.pv.na{color:#cbd5e1;font-weight:600}
/* HARDWARE */
.hw-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.hw{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:.2s}
.hw:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.hw .ic{width:46px;height:46px;border-radius:12px;background:var(--brand-l);color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:14px;margin-bottom:10px}
.hw b{display:block;font-size:16px;color:var(--brand-d)}
.hw .p{font-weight:800;color:var(--brand);font-size:18px;margin:8px 0 4px}
.hw span{font-size:13px;color:var(--muted)}
/* SERVICE */
.svc{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:10px}
.svc .c{background:var(--brand-l);border-radius:var(--radius);padding:22px}
.svc .c .ic{width:46px;height:46px;border-radius:12px;background:#fff;color:var(--brand);display:grid;place-items:center;font-weight:800;font-size:14px;margin-bottom:10px}
.svc .c b{display:block;font-size:15.5px;color:var(--brand-d);margin-bottom:5px}
.svc .c span{font-size:13.5px;color:var(--muted)}
/* CTA */
.cta{background:linear-gradient(135deg,var(--brand),var(--brand-d));color:#fff;border-radius:18px;padding:38px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta h3{font-size:22px;font-weight:800;margin-bottom:6px}
.cta p{font-size:14.5px;opacity:.92}
.cta .pay{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.cta .pay span{background:rgba(255,255,255,.16);padding:7px 14px;border-radius:8px;font-size:13.5px;font-weight:600}
.cta .contact-line{display:flex;gap:18px;flex-wrap:wrap;margin-top:14px;font-size:13.5px;opacity:.95}
.cta .btn-white{background:#fff;color:var(--brand-d)}
.cta .btn-white:hover{background:#eef4fb}
/* FAQ */
.faq .item{border:1px solid var(--line);border-radius:var(--radius);margin-bottom:12px;background:#fff;overflow:hidden}
.faq details{padding:0}
.faq summary{cursor:pointer;padding:16px 18px;font-weight:700;color:var(--brand-d);list-style:none;display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";color:var(--brand);font-size:22px;font-weight:700;line-height:1}
.faq details[open] summary::after{content:"\2212"}
.faq .faq-a{padding:0 18px 18px;color:var(--muted);font-size:14.5px;line-height:1.75}
/* RESPONSIVE */
@media(max-width:980px){.steps{grid-template-columns:1fr 1fr}.hw-grid{grid-template-columns:1fr 1fr}.svc{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.steps{grid-template-columns:1fr}.hw-grid{grid-template-columns:1fr}.svc{grid-template-columns:1fr}.cta{flex-direction:column;align-items:flex-start}.cta>div:last-child{align-items:flex-start!important}}