/* TechBizTrend — clean professional blog theme */
:root{
  --navy:#0b1b3f; --navy2:#12275c; --accent:#2e6bff; --accent-soft:#e8efff;
  --bg:#f6f8fc; --card:#ffffff; --text:#1a2332; --muted:#5b6b85;
  --border:#e3e9f4; --radius:14px; --maxw:1120px;
  --shadow:0 8px 30px rgba(11,27,63,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Inter,Helvetica,Arial,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.7;font-size:17px}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* Header */
.site-header{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50;
  box-shadow:0 2px 12px rgba(0,0,0,.18)}
.header-inner{display:flex;align-items:center;justify-content:space-between;
  height:68px}
.brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;
  font-size:22px;letter-spacing:.3px}
.brand:hover{text-decoration:none}
.brand img{width:34px;height:34px;border-radius:8px}
.brand span em{font-style:normal;color:#7ea2ff}
.main-nav{display:flex;gap:4px}
.main-nav a{color:#dbe4ff;padding:10px 14px;border-radius:8px;font-size:15.5px;
  font-weight:600}
.main-nav a:hover{background:rgba(255,255,255,.1);text-decoration:none;color:#fff}
.main-nav a.active{background:rgba(255,255,255,.14);color:#fff}
.menu-btn{display:none;background:none;border:0;color:#fff;font-size:26px;cursor:pointer}

/* Hero */
.hero{background:linear-gradient(135deg,var(--navy) 0%,var(--navy2) 60%,#1b3a8f 100%);
  color:#fff;padding:72px 0 64px;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;
  background:radial-gradient(circle,rgba(46,107,255,.35),transparent 70%)}
.hero h1{font-size:clamp(30px,4.6vw,50px);line-height:1.2;max-width:640px;margin-bottom:16px}
.hero p{color:#c4d2f5;font-size:19px;max-width:600px;margin-bottom:28px}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;
  padding:13px 28px;border-radius:10px;font-size:16px;border:0;cursor:pointer}
.btn:hover{background:#1f56d6;text-decoration:none;color:#fff}
.btn-outline{background:transparent;border:2px solid #7ea2ff;color:#fff;margin-left:12px}
.btn-outline:hover{background:rgba(255,255,255,.1)}

/* Sections */
.section{padding:56px 0}
.section-title{font-size:28px;margin-bottom:6px}
.section-sub{color:var(--muted);margin-bottom:30px;font-size:17px}

/* Post cards */
.cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:26px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow);transition:transform .18s ease}
.card:hover{transform:translateY(-5px)}
.card img{width:100%;height:180px;object-fit:cover}
.card-body{padding:22px}
.badge{display:inline-block;background:var(--accent-soft);color:var(--accent);
  font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:20px;
  text-transform:uppercase;letter-spacing:.6px;margin-bottom:10px}
.card h3{font-size:20px;line-height:1.4;margin-bottom:10px}
.card h3 a{color:var(--text)}
.card p{color:var(--muted);font-size:15.5px;margin-bottom:14px}
.card-meta{font-size:13.5px;color:var(--muted)}
.read-more{font-weight:700;font-size:15px}

/* Category strip */
.cats{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:22px}
.cat-card{background:var(--navy);color:#fff;border-radius:var(--radius);padding:30px;
  box-shadow:var(--shadow)}
.cat-card h3{font-size:22px;margin-bottom:8px}
.cat-card p{color:#c4d2f5;font-size:15.5px;margin-bottom:16px}
.cat-card a{color:#9db9ff;font-weight:700}

/* About teaser / newsletter */
.split{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:center}
.newsletter{background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius);padding:34px;box-shadow:var(--shadow)}
.newsletter h3{font-size:22px;margin-bottom:8px}
.newsletter p{color:var(--muted);font-size:15.5px;margin-bottom:18px}
.news-form{display:flex;gap:10px}
.news-form input{flex:1;padding:13px 16px;border:1.5px solid var(--border);
  border-radius:10px;font-size:15.5px}
.news-form input:focus{outline:none;border-color:var(--accent)}
.form-note{font-size:13px;color:var(--muted);margin-top:12px}

/* Article page */
.article-hero{width:100%;max-height:420px;object-fit:cover;border-radius:var(--radius);
  margin:26px 0;box-shadow:var(--shadow)}
.article{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:clamp(24px,4vw,54px);margin:34px 0;box-shadow:var(--shadow)}
.article h1{font-size:clamp(26px,3.6vw,38px);line-height:1.3;margin:12px 0 10px}
.article .byline{color:var(--muted);font-size:15px;margin-bottom:8px}
.article h2{font-size:24px;margin:34px 0 12px;color:var(--navy)}
.article h3{font-size:19px;margin:26px 0 10px;color:var(--navy)}
.article p{margin-bottom:16px}
.article ul,.article ol{margin:0 0 18px 24px}
.article li{margin-bottom:8px}
.article strong{color:var(--navy)}
.tldr{background:var(--accent-soft);border-left:4px solid var(--accent);
  padding:18px 22px;border-radius:0 10px 10px 0;margin:26px 0;font-size:16px}
.author-box{display:flex;gap:18px;background:var(--bg);border:1px solid var(--border);
  border-radius:var(--radius);padding:24px;margin-top:40px;align-items:center}
.author-box .avatar{width:64px;height:64px;border-radius:50%;background:var(--navy);
  color:#fff;display:flex;align-items:center;justify-content:center;font-size:26px;
  font-weight:800;flex-shrink:0}
.author-box p{color:var(--muted);font-size:15px;margin:4px 0 0}
.breadcrumb{font-size:14px;color:var(--muted);margin:26px 0 0}
.breadcrumb a{color:var(--muted)}

/* Static pages */
.page-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);
  padding:clamp(26px,4vw,52px);margin:34px 0;box-shadow:var(--shadow)}
.page-card h1{font-size:34px;margin-bottom:16px;color:var(--navy)}
.page-card h2{font-size:22px;margin:28px 0 10px;color:var(--navy)}
.page-card p{margin-bottom:14px;color:var(--text)}
.page-card ul{margin:0 0 16px 24px}
.page-card li{margin-bottom:8px}
.contact-form{max-width:560px;margin-top:20px}
.contact-form label{display:block;font-weight:600;margin:16px 0 6px;font-size:15px}
.contact-form input,.contact-form textarea,.contact-form select{width:100%;
  padding:13px 16px;border:1.5px solid var(--border);border-radius:10px;font-size:15.5px;
  font-family:inherit}
.contact-form input:focus,.contact-form textarea:focus{outline:none;border-color:var(--accent)}
.contact-form textarea{min-height:150px;resize:vertical}

/* Footer */
.site-footer{background:var(--navy);color:#c4d2f5;padding:48px 0 26px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:36px;margin-bottom:30px}
.site-footer h4{color:#fff;font-size:16px;margin-bottom:14px}
.site-footer a{color:#c4d2f5;font-size:15px;display:block;margin-bottom:8px}
.site-footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:20px;
  font-size:14px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* Responsive */
@media(max-width:860px){
  .split{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:680px){
  .main-nav{display:none;position:absolute;top:68px;left:0;right:0;background:var(--navy);
    flex-direction:column;padding:12px 22px 20px}
  .main-nav.open{display:flex}
  .menu-btn{display:block}
  .news-form{flex-direction:column}
  .footer-grid{grid-template-columns:1fr}
}