:root{
  --bg:#f8fafc; --surface:#ffffff; --text:#0f172a; --muted:#475569; --line:#e2e8f0;
  --brand:#2563eb; --brand-dark:#1d4ed8; --accent:#eff6ff; --max:1140px; --shadow:0 10px 30px rgba(15,23,42,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text);line-height:1.65}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
.container{width:min(var(--max),calc(100% - 2rem));margin:0 auto}
.site-header{position:sticky;top:0;background:rgba(248,250,252,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);z-index:50}
.nav{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:76px}
.brand{display:flex;align-items:center;gap:.8rem;font-weight:800;color:var(--text)}
.brand img{width:190px;height:auto}
.nav-links{display:flex;gap:1rem;flex-wrap:wrap}
.nav-links a{color:var(--text);font-weight:600}
.hero{padding:4.5rem 0 3rem}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center}
.eyebrow{display:inline-flex;align-items:center;padding:.35rem .7rem;border-radius:999px;background:var(--accent);color:var(--brand-dark);font-size:.92rem;font-weight:700}
h1,h2,h3{line-height:1.15;letter-spacing:-0.02em;color:var(--text)}
h1{font-size:clamp(2.1rem,5vw,3.7rem);margin:.9rem 0 1rem}
h2{font-size:clamp(1.5rem,3.2vw,2.3rem);margin:2.5rem 0 1rem}
h3{font-size:1.2rem;margin:1.5rem 0 .6rem}
.lead{font-size:1.1rem;color:var(--muted);max-width:62ch}
.button-row{display:flex;gap:.9rem;flex-wrap:wrap;margin-top:1.6rem}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:.9rem 1.15rem;border-radius:14px;font-weight:700;border:1px solid transparent}
.btn-primary{background:var(--brand);color:#fff}
.btn-secondary{background:#fff;border-color:var(--line);color:var(--text)}
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.card{background:var(--surface);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow)}
.card-body{padding:1.05rem 1.1rem 1.15rem}
.card p{color:var(--muted)}
.kicker{font-size:.82rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--brand-dark)}
.section{padding:2rem 0}
.section-lg{padding:3.5rem 0}
.muted{color:var(--muted)}
.feature-list{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem;margin-top:1.5rem}
.feature{background:#fff;border:1px solid var(--line);border-radius:18px;padding:1rem}
footer{border-top:1px solid var(--line);padding:2.2rem 0;margin-top:3rem;background:#fff}
.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:1rem}
.article-layout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:2rem;padding-top:2rem}
.article{background:#fff;border:1px solid var(--line);border-radius:24px;padding:1.4rem 1.6rem;box-shadow:var(--shadow)}
.article img.featured{border-radius:20px;margin:1rem 0 1.2rem}
.meta{display:flex;flex-wrap:wrap;gap:1rem;color:var(--muted);font-size:.95rem;border-bottom:1px solid var(--line);padding-bottom:1rem;margin-bottom:1rem}
.article p, .article li{font-size:1.03rem}
.article ul,.article ol{padding-left:1.2rem}
.aside{position:sticky;top:96px;align-self:start}
.aside-box{background:#fff;border:1px solid var(--line);border-radius:20px;padding:1rem 1.1rem;box-shadow:var(--shadow);margin-bottom:1rem}
.breadcrumbs{font-size:.92rem;color:var(--muted);margin-top:1.2rem}
.post-list{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.author-box, .legal, .page-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:1.4rem 1.5rem;box-shadow:var(--shadow)}
.form-group{display:grid;gap:.45rem;margin-bottom:1rem}
input, textarea{width:100%;padding:.95rem 1rem;border:1px solid #cbd5e1;border-radius:14px;font:inherit;background:#fff}
textarea{min-height:180px;resize:vertical}
.notice{padding:1rem 1.1rem;border-radius:16px;background:var(--accent);border:1px solid #bfdbfe;color:#1e3a8a}
.tag-list{display:flex;gap:.6rem;flex-wrap:wrap}
.tag{padding:.38rem .7rem;border-radius:999px;background:var(--accent);color:var(--brand-dark);font-size:.9rem;font-weight:700}
table{width:100%;border-collapse:collapse}
th,td{border:1px solid var(--line);padding:.75rem;text-align:left}
th{background:#f8fafc}
@media (max-width: 980px){
  .hero-grid,.article-layout,.footer-grid,.card-grid,.feature-list,.post-list{grid-template-columns:1fr}
  .aside{position:static}
}
@media (max-width: 640px){
  .nav{align-items:flex-start;padding:.7rem 0}
  .nav-links{gap:.75rem}
  .article{padding:1.1rem}
}