:root{
  --bg:#f6f7fb;
  --ink:#0f172a;
  --muted:#475569;
  --brand:#0d9488;
  --brand-2:#14b8a6;
  --card:#ffffff;
  --line:#e2e8f0;
  --soft:#ecfeff;
  --shadow:0 10px 30px rgba(15,23,42,0.08);
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:"Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{color:var(--brand-2)}
.container{
  width:min(1120px, 92vw);
  margin:0 auto;
}
header{
  background:#fff;
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:50;
}
.nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:14px 0;
  gap:16px;
}
.nav-links{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
  align-items:center;
  font-weight:600;
}
.nav-links a{color:var(--ink)}
.hero{
  padding:56px 0 36px;
  background:
    radial-gradient(1200px 500px at 10% -10%, #e6fffb 0%, transparent 60%),
    radial-gradient(900px 400px at 90% 0%, #ccfbf1 0%, transparent 55%);
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:28px;
  align-items:center;
}
.badge{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--soft);
  color:var(--brand);
  border-radius:999px;
  padding:6px 14px;
  font-weight:600;
  font-size:14px;
}
.hero h1{
  font-size:clamp(32px, 4vw, 48px);
  line-height:1.1;
  margin:14px 0 12px;
}
.hero p{color:var(--muted);font-size:18px}
.cta{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
  margin-top:18px;
}
.btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 18px;
  border-radius:10px;
  border:1px solid transparent;
  font-weight:700;
  cursor:pointer;
}
.btn-primary{background:var(--brand);color:#fff}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--ink)}
.section{
  padding:40px 0;
}
.section h2{
  font-size:clamp(24px, 3vw, 32px);
  margin:0 0 14px;
}
.subtext{color:var(--muted);margin:0 0 20px}
.grid-3{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
.grid-2{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:20px;
}
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  padding:20px;
  box-shadow:var(--shadow);
}
.card h3{margin:6px 0 10px}
.card p{color:var(--muted)}
.pill{
  display:inline-block;
  padding:6px 12px;
  border-radius:999px;
  background:#f1f5f9;
  font-size:13px;
  font-weight:600;
  color:#0f172a;
}
.breadcrumbs{
  font-size:14px;
  color:var(--muted);
  padding:12px 0;
}
.breadcrumbs a{color:var(--muted)}
.breadcrumbs span{color:var(--ink)}
.article{
  background:#fff;
  border:1px solid var(--line);
  border-radius:16px;
  padding:28px;
  box-shadow:var(--shadow);
}
.article h1{margin-top:0}
.meta{
  color:var(--muted);
  font-size:14px;
}
.meta a{color:var(--brand)}
.toc{
  background:#f8fafc;
  border:1px solid var(--line);
  border-radius:12px;
  padding:16px;
  margin:18px 0;
}
.toc h2{font-size:18px;margin:0 0 8px}
.toc ul{margin:0;padding-left:18px}
.featured-img{
  border-radius:14px;
  overflow:hidden;
  border:1px solid var(--line);
  margin:16px 0;
  aspect-ratio:16/9;
  background:#e2e8f0;
}
.featured-img img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.tool-form{
  display:grid;
  gap:12px;
}
label{font-weight:600}
input, select, textarea{
  width:100%;
  padding:10px 12px;
  border-radius:10px;
  border:1px solid var(--line);
  font-size:15px;
}
.output{
  background:#f8fafc;
  border:1px solid var(--line);
  border-radius:12px;
  padding:14px;
}
.faq-item{
  border-bottom:1px solid var(--line);
  padding:14px 0;
}
.faq-item:last-child{border-bottom:none}
.footer{
  background:#0f172a;
  color:#cbd5f5;
  padding:36px 0;
  margin-top:40px;
}
.footer a{color:#e2e8f0}
.footer-grid{
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:24px;
}
.footer-links{
  list-style:none;
  padding:0;
  margin:10px 0 0;
  display:grid;
  gap:8px;
}
.footer-links a{
  color:#e2e8f0;
  font-weight:500;
}
.footer small{color:#94a3b8}
.blog-card{
  display:grid;
  grid-template-rows:auto 1fr;
  gap:12px;
}
.blog-card img{
  width:100%;
  height:auto;
  aspect-ratio:16/9;
  object-fit:cover;
  border-radius:12px;
  border:1px solid var(--line);
}
.tag-row{
  display:flex;
  gap:8px;
  flex-wrap:wrap;
  margin-top:8px;
}
@media (max-width: 900px){
  .hero-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
}