:root{
  --ink:#0d1426;--muted:#5b6b85;--bg:#eef3fb;--card:#ffffff;--line:#e3ebf6;
  --brand:#2563eb;--brand2:#0ea66b;--accent:#ff5a1f;
  --grad:linear-gradient(135deg,#2563eb 0%,#1ea7a0 55%,#16a34a 100%);
  --shadow:0 10px 30px rgba(20,45,90,.08);--shadow2:0 20px 50px rgba(20,45,90,.14);
  --r:18px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:Manrope,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);line-height:1.6;-webkit-font-smoothing:antialiased}
.wrap{max-width:1080px;margin:0 auto;padding:0 20px}
a{color:inherit}
section{padding:54px 0}
h2{font-size:clamp(24px,3.4vw,34px);font-weight:800;letter-spacing:-.02em;margin-bottom:8px}
.lead{color:var(--muted);font-size:17px;margin-bottom:26px;max-width:620px}
.btn{display:inline-flex;align-items:center;gap:9px;background:var(--grad);color:#fff;text-decoration:none;font-weight:800;font-size:17px;padding:15px 30px;border-radius:14px;box-shadow:0 10px 24px rgba(37,99,235,.32);transition:transform .15s,box-shadow .15s;border:0;cursor:pointer}
.btn:hover{transform:translateY(-2px);box-shadow:0 16px 32px rgba(37,99,235,.4)}
.btn.ghost{background:#fff;color:var(--brand);box-shadow:var(--shadow);border:1px solid var(--line)}
.btn.lg{font-size:19px;padding:18px 40px}

header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
header.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;text-decoration:none;letter-spacing:-.02em}
.brand img{width:34px;height:34px;border-radius:8px}
.brand span b{color:var(--brand)}
.nav .btn{padding:11px 22px;font-size:15px}

.hero{position:relative;overflow:hidden;background:
  radial-gradient(900px 420px at 12% -10%,rgba(37,99,235,.16),transparent 60%),
  radial-gradient(800px 420px at 100% 0%,rgba(22,163,74,.14),transparent 55%)}
.hero .wrap{padding-top:56px;padding-bottom:60px}
.badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);color:#b3490f;font-weight:800;font-size:13.5px;padding:8px 15px;border-radius:30px;box-shadow:var(--shadow);text-transform:uppercase;letter-spacing:.04em}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(255,90,31,.18)}
h1{font-size:clamp(30px,5.2vw,52px);font-weight:800;line-height:1.08;letter-spacing:-.03em;margin:20px 0 16px}
h1 .g{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.hero p.sub{color:var(--muted);font-size:19px;max-width:600px;margin-bottom:28px}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;align-items:center}
.chips{display:flex;gap:10px;flex-wrap:wrap;margin-top:28px}
.chip{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--line);border-radius:30px;padding:9px 16px;font-weight:600;font-size:14.5px;box-shadow:var(--shadow)}
.chip b{color:var(--brand2)}

.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:22px;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow2)}
.card-ic{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:22px;background:linear-gradient(135deg,rgba(37,99,235,.12),rgba(22,163,74,.12));margin-bottom:12px}
.card-b{font-weight:800;font-size:16.5px;margin-bottom:4px}
.card-t{color:var(--muted);font-size:14.5px}

.price-box{background:var(--grad);color:#fff;border-radius:24px;padding:38px;box-shadow:var(--shadow2);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px}
.price-box .num{font-size:clamp(40px,7vw,64px);font-weight:800;line-height:1}
.price-box .cap{opacity:.92;font-size:16px;margin-bottom:6px}
.price-box small{opacity:.85;display:block;margin-top:6px;font-weight:500}

ul.list{list-style:none;display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:10px}
ul.list li{background:#fff;border:1px solid var(--line);border-radius:13px;padding:13px 16px 13px 44px;position:relative;box-shadow:var(--shadow);font-size:15px}
ul.list li::before{content:"";position:absolute;left:15px;top:50%;transform:translateY(-50%);width:18px;height:18px;border-radius:50%;background:var(--grad)}
ul.list li::after{content:"";position:absolute;left:21px;top:50%;width:5px;height:9px;border:2px solid #fff;border-top:0;border-left:0;transform:translateY(-65%) rotate(45deg)}
ul.related{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}
ul.related li{padding-left:16px}
ul.related li::before,ul.related li::after{display:none}
ul.related a{text-decoration:none;font-weight:600;color:var(--brand)}

.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:16px;counter-reset:s}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:24px 22px;box-shadow:var(--shadow);position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-14px;left:22px;width:38px;height:38px;border-radius:11px;background:var(--grad);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:18px;box-shadow:0 8px 18px rgba(37,99,235,.3)}
.step b{display:block;margin:10px 0 5px;font-weight:800;font-size:16.5px}
.step span{color:var(--muted);font-size:14.5px}

.prose{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:26px 28px;box-shadow:var(--shadow)}
.prose p{margin-bottom:13px;color:#33415c}
.prose p:last-child{margin-bottom:0}

.faq details{background:#fff;border:1px solid var(--line);border-radius:14px;padding:0;margin-bottom:12px;box-shadow:var(--shadow);overflow:hidden}
.faq summary{font-weight:700;cursor:pointer;font-size:16.5px;padding:18px 22px;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:"+";font-size:24px;color:var(--brand);font-weight:700;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 22px 18px;color:var(--muted)}

.cta-band{background:var(--grad);border-radius:26px;padding:46px 30px;text-align:center;color:#fff;box-shadow:var(--shadow2)}
.cta-band h2{color:#fff}
.cta-band p{opacity:.92;margin:8px 0 24px;font-size:17px}
.cta-band .btn{background:#fff;color:var(--brand);box-shadow:0 12px 28px rgba(0,0,0,.18)}

footer.ft{background:#0d1426;color:#9fb0cc;padding:40px 0;font-size:14px}
footer.ft a{color:#cfe0ff;text-decoration:none}
footer.ft .row{display:flex;flex-wrap:wrap;gap:18px;justify-content:space-between;align-items:center}

/* blog */
.article{max-width:760px;margin:0 auto}
.article h2{font-size:clamp(22px,3vw,28px);margin:32px 0 12px;letter-spacing:-.02em}
.article h3{font-size:20px;margin:22px 0 8px}
.article p{margin-bottom:14px;color:#26344d;font-size:17px;line-height:1.78}
.article ul,.article ol{margin:0 0 16px 22px;color:#26344d}
.article li{margin-bottom:7px}
.article .tip{background:#eef6ff;border-left:4px solid var(--brand);border-radius:10px;padding:14px 18px;margin:18px 0;color:#1b3a6b}
.article .cta-inline{background:var(--grad);color:#fff;border-radius:16px;padding:24px;margin:26px 0;text-align:center;box-shadow:var(--shadow2)}
.article .cta-inline a{display:inline-block;margin-top:10px;background:#fff;color:var(--brand);font-weight:800;text-decoration:none;padding:12px 26px;border-radius:12px}
.post-meta{color:var(--muted);font-size:14px;margin-bottom:14px}
.blog-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px}
.post-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow);text-decoration:none;display:block;transition:transform .15s,box-shadow .15s}
.post-card:hover{transform:translateY(-3px);box-shadow:var(--shadow2)}
.post-card h3{font-size:19px;margin-bottom:6px;letter-spacing:-.01em}
.post-card p{color:var(--muted);font-size:14.5px}

.mobile-cta{display:none}
@media(max-width:720px){
  section{padding:40px 0}
  .hero .wrap{padding-top:36px}
  .nav .btn{display:none}
  .mobile-cta{display:block;position:fixed;left:0;right:0;bottom:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(10px);border-top:1px solid var(--line);padding:10px 14px}
  .mobile-cta .btn{width:100%;justify-content:center}
  body{padding-bottom:74px}
}