:root{
  --emerald:#10B981; --emerald-d:#0B8A63; --dark:#12263A; --slate:#5A6B7A;
  --bg:#FFFFFF; --soft:#F4F8F6; --border:#E7EDEA; --gold:#E0A106;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,"Segoe UI",Roboto,Arial,sans-serif;color:var(--dark);
  background:var(--bg);line-height:1.75;-webkit-font-smoothing:antialiased}
a{color:var(--emerald-d);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

/* header */
.nav{border-bottom:1px solid var(--border);background:#fff;position:sticky;top:0;z-index:5}
.nav-in{max-width:900px;margin:0 auto;padding:14px 20px;display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--dark)}
.brand:hover{text-decoration:none}
.brand .dot{width:30px;height:30px;border-radius:8px;background:var(--emerald);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:15px}
.nav a.cta-mini{background:var(--emerald);color:#fff;padding:9px 16px;border-radius:9px;font-weight:700;font-size:14px}
.nav a.cta-mini:hover{background:var(--emerald-d);text-decoration:none}

.container{max-width:720px;margin:0 auto;padding:0 20px}
.wide{max-width:900px}

/* home hero */
.home-hero{background:var(--soft);border-bottom:1px solid var(--border);padding:48px 0 40px;text-align:center}
.home-hero h1{font-size:32px;font-weight:800;letter-spacing:-.5px;margin-bottom:12px}
.home-hero p{color:var(--slate);font-size:18px;max-width:560px;margin:0 auto}

/* article list */
.list{padding:40px 0 20px}
.card{display:block;border:1px solid var(--border);border-radius:14px;padding:22px 24px;margin-bottom:18px;
  background:#fff;transition:transform .14s,box-shadow .14s}
.card:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(0,0,0,.07);text-decoration:none}
.card .tag{display:inline-block;font-size:11px;font-weight:800;color:var(--emerald-d);
  background:#EAF7F1;padding:3px 10px;border-radius:20px;margin-bottom:10px;letter-spacing:.3px}
.card h2{font-size:21px;font-weight:800;color:var(--dark);line-height:1.3;margin-bottom:8px}
.card p{color:var(--slate);font-size:15px}
.card .more{color:var(--emerald-d);font-weight:700;font-size:14px;margin-top:10px;display:inline-block}
.soon{color:var(--slate);font-size:14px;text-align:center;padding:14px;border:1px dashed var(--border);border-radius:12px;margin-top:6px}

/* article */
article{padding:40px 0 10px}
article .kicker{color:var(--emerald-d);font-weight:800;font-size:13px;letter-spacing:.5px;text-transform:uppercase;margin-bottom:10px}
article h1{font-size:32px;font-weight:800;letter-spacing:-.5px;line-height:1.22;margin-bottom:14px}
article .meta{color:var(--slate);font-size:14px;margin-bottom:26px;padding-bottom:22px;border-bottom:1px solid var(--border)}
article h2{font-size:23px;font-weight:800;margin:34px 0 12px;letter-spacing:-.3px}
article p{font-size:18px;margin-bottom:18px}
article ul,article ol{margin:0 0 18px 22px}
article li{font-size:18px;margin-bottom:8px}
article strong{color:var(--dark)}
article blockquote{border-left:4px solid var(--emerald);background:var(--soft);border-radius:0 10px 10px 0;
  padding:14px 20px;margin:0 0 20px;color:#33465a;font-size:17px}
hr{border:0;border-top:1px solid var(--border);margin:30px 0}

/* CTA box */
.cta-box{background:#0E1F30;color:#fff;border-radius:16px;padding:30px 26px;text-align:center;margin:36px 0 10px}
.cta-box h3{font-size:22px;font-weight:800;margin-bottom:10px}
.cta-box p{color:#C6D2DC;font-size:16px;margin-bottom:20px}
.cta-box a.btn{display:inline-block;background:var(--emerald);color:#fff;font-weight:800;font-size:17px;
  padding:15px 30px;border-radius:11px;box-shadow:0 10px 22px rgba(16,185,129,.3)}
.cta-box a.btn:hover{background:var(--emerald-d);text-decoration:none}

/* author + back */
.author{display:flex;gap:16px;align-items:flex-start;border:1px solid var(--border);border-radius:14px;padding:20px 22px;margin:30px 0}
.author .av{width:52px;height:52px;border-radius:50%;background:var(--emerald);color:#fff;flex:0 0 52px;
  display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px}
.author .n{font-weight:800}
.author .t{color:var(--slate);font-size:14px;margin-top:3px}
.back{display:inline-block;color:var(--slate);font-size:14px;margin:10px 0 30px}

footer{border-top:1px solid var(--border);text-align:center;color:var(--slate);font-size:13px;padding:26px 20px 40px;margin-top:20px}

@media(max-width:640px){
  article h1,.home-hero h1{font-size:26px}
  article p,article li{font-size:17px}
}