*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --ink:#1d1d1f;--ink2:#3d3d3f;--ink3:#6e6e73;--ink4:#86868b;
  --bg:#ffffff;--bg2:#f5f5f7;--card:#ffffff;--line:#e5e5ea;
  --accent:#1A7F45;--accent-l:#e9f7ef;--accent-d:#135E33;
  --r:20px;--r-sm:12px;--shadow:0 1px 3px rgba(0,0,0,.05),0 8px 24px rgba(0,0,0,.08);
}
html{scroll-behavior:smooth}
body{
  font-family:'Inter','Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,'SF Pro Text','Helvetica Neue',Arial,sans-serif;
  color:var(--ink);background:var(--bg);line-height:1.7;font-size:18px;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
}
a{color:inherit}
.container{max-width:980px;margin:0 auto;padding:0 32px}
.nav{
  position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);
  backdrop-filter:blur(18px);border-bottom:1px solid rgba(0,0,0,.06);
}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{font-weight:800;letter-spacing:-.4px;text-decoration:none;font-size:20px}
.nav-logo i{color:var(--accent);font-style:italic}
.nav-links{display:flex;gap:18px;align-items:center}
.nav-links a{text-decoration:none;color:var(--ink3);font-weight:600;font-size:16px}
.nav-links a:hover{color:var(--ink)}

.hero{padding:56px 0 24px}
.hero h1{font-size:clamp(28px,3.8vw,40px);line-height:1.15;letter-spacing:-.6px;margin-bottom:12px}
.hero p{color:var(--ink3);max-width:720px}
.tag{display:inline-block;background:var(--accent-l);color:var(--accent);font-weight:700;font-size:14px;letter-spacing:.6px;text-transform:uppercase;padding:6px 12px;border-radius:999px}

.blog-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:24px 0 40px}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  padding:22px;box-shadow:var(--shadow);text-decoration:none;display:block;
}
.card h3{font-size:20px;margin-bottom:8px}
.card p{color:var(--ink3);font-size:16px}
.card .meta{font-size:14px;color:var(--ink4);margin-bottom:8px}

.article{padding:24px 0 56px}
.meta{color:var(--ink4);font-size:14px;margin:8px 0 16px}
.summary{
  background:var(--bg2);border:1px solid var(--line);border-radius:16px;padding:16px 18px;margin:18px 0 24px;
}
.summary h2{font-size:18px;margin-bottom:6px}
.summary ul{list-style:none;display:grid;gap:6px}
.summary li{font-size:16px;color:var(--ink2);display:flex;gap:8px;align-items:flex-start}
.summary li span{color:var(--accent);font-weight:700}

.def{
  border-left:4px solid var(--accent);padding:12px 16px;background:#fff;border-radius:12px;
  box-shadow:var(--shadow);margin:18px 0;
}
.def strong{color:var(--accent-d)}

h2{font-size:24px;margin:28px 0 10px}
h3{font-size:20px;margin:22px 0 8px}
p{margin-bottom:12px}
ul{margin:0 0 14px 18px}
li{margin-bottom:6px}

table{width:100%;border-collapse:collapse;margin:16px 0 24px}
th,td{border:1px solid var(--line);padding:10px 12px;text-align:left;font-size:16px}
th{background:var(--bg2)}

.faq{margin-top:28px}
.faq h2{margin-bottom:10px}
.faq-item{border-top:1px solid var(--line);padding:12px 0}
.faq-item:last-child{border-bottom:1px solid var(--line)}
.faq-item h3{font-size:18px;margin:0 0 6px}
.faq-item p{margin:0;color:var(--ink3)}

.cta{
  margin-top:28px;background:var(--accent);color:#fff;border-radius:16px;padding:18px;
  display:flex;flex-direction:column;gap:8px;
}
.cta a{color:#fff;text-decoration:none;font-weight:700}
.cta small{color:rgba(255,255,255,.8)}

.footer{border-top:1px solid var(--line);padding:28px 0;color:var(--ink4);font-size:14px;margin-top:40px}

@media(max-width:768px){
  .container{padding:0 20px}
  .blog-grid{grid-template-columns:1fr}
  .nav-links{display:none}
}