:root{
  --brand:#0d5ca8;
  --brand-dark:#0a3d70;
  --accent:#e67e22;
  --bg:#f7f9fb;
  --text:#1c2b3a;
  --muted:#5a6b7a;
  --card:#ffffff;
  --line:#e3e8ee;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Roboto,Helvetica,Arial,sans-serif;
  color:var(--text);background:var(--bg);line-height:1.65;
}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}

/* header */
.site-header{
  background:linear-gradient(135deg,var(--brand-dark),var(--brand));
  color:#fff;padding:1.2rem 0;
}
.site-header .wrap{
  max-width:1020px;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;
}
.brand{font-size:1.35rem;font-weight:700;letter-spacing:.3px}
.brand span{color:#ffd9a0}
nav a{color:#dfe9f5;margin-left:20px;font-weight:500}
nav a:hover{color:#fff;text-decoration:none}

.wrap{max-width:1020px;margin:0 auto;padding:0 20px}

/* hero */
.hero{
  background:linear-gradient(180deg,#eaf2fb,#f7f9fb);
  padding:3.2rem 0 2.6rem;text-align:center;
}
.hero h1{font-size:2.1rem;color:var(--brand-dark);margin-bottom:.8rem;line-height:1.3}
.hero p{font-size:1.1rem;color:var(--muted);max-width:760px;margin:0 auto}

/* sections */
.section{padding:2.6rem 0}
.section h2{color:var(--brand-dark);margin-bottom:1.2rem;font-size:1.5rem}
.grid{display:grid;gap:18px}
.g3{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:10px;
  padding:20px;box-shadow:0 1px 3px rgba(0,0,0,.04);
}
.card h3{font-size:1.05rem;color:var(--brand-dark);margin-bottom:.4rem}
.card p{color:var(--muted);font-size:.95rem}

/* categories list */
.cat-row{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--card);border:1px solid var(--line);border-radius:8px;
  padding:14px 18px;margin-bottom:10px;flex-wrap:wrap;
}
.cat-row .name{font-weight:600}
.cat-row .meta{color:var(--muted);font-size:.88rem}
.cat-row a.btn{margin-left:auto}

.btn{
  display:inline-block;background:var(--accent);color:#fff;padding:8px 16px;
  border-radius:6px;font-weight:500;white-space:nowrap;
}
.btn:hover{background:#cf6a11;text-decoration:none}

/* article / blog */
article{max-width:780px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;margin-bottom:18px}
article h2{font-size:1.35rem;color:var(--brand-dark);margin-bottom:.3rem}
article .date{color:var(--muted);font-size:.85rem;margin-bottom:.8rem}
article p,article li{color:#2b3a4a;margin-bottom:.7rem}
article ul,article ol{padding-left:1.3rem;margin-bottom:.8rem}
article h3{color:var(--brand-dark);margin:1.2rem 0 .5rem}

/* footer */
.site-footer{background:#101820;color:#9fb0bd;padding:2rem 0;margin-top:2.5rem;text-align:center;font-size:.9rem}
.site-footer a{color:#cfe0ef}
.site-footer nav{margin-bottom:.6rem}
.site-footer nav a{margin:0 12px}
.policy-note{font-size:.82rem;color:#6f7f8c;margin-top:.8rem;max-width:760px;margin-left:auto;margin-right:auto;line-height:1.5}

/* two-column layout for article pages */
.layout{display:grid;grid-template-columns:1fr 300px;gap:28px;align-items:start}
.main-col{min-width:0}
.sidebar{position:sticky;top:20px}
.sidebar .card{margin-bottom:18px}
.sidebar h4{color:var(--brand-dark);margin-bottom:.5rem;font-size:1rem;border-bottom:2px solid var(--line);padding-bottom:.4rem}
.sidebar ul{list-style:none}
.sidebar li{margin-bottom:.55rem;font-size:.92rem}
.sidebar li a{color:var(--text)}
.sidebar li a:hover{color:var(--brand)}
.sidebar .cat-badge{display:inline-block;background:#eef5fb;color:var(--brand-dark);border-radius:20px;padding:4px 12px;font-size:.8rem;margin:0 6px 8px 0}

/* prev/next page nav */
.prevnext{display:flex;justify-content:space-between;gap:16px;margin-top:24px;padding-top:18px;border-top:2px solid var(--line)}
.prevnext a{flex:1;display:block;background:#f0f5fb;border:1px solid var(--line);border-radius:8px;padding:12px 14px;font-size:.9rem;color:var(--text)}
.prevnext a:hover{background:#e4eef8;text-decoration:none}
.prevnext .dir{display:block;font-size:.75rem;color:var(--brand);font-weight:600;text-transform:uppercase;margin-bottom:3px}
.prevnext .next-text{text-align:right}

@media(max-width:760px){
  .layout{grid-template-columns:1fr}
  .sidebar{position:static}
}

@media(max-width:600px){
  .hero h1{font-size:1.6rem}
  nav a{margin-left:10px}
}

/* ---- Image/icon enhancements (added 2026-08-28) ---- */
.hero{background:linear-gradient(135deg,#0a3d70 0%,#0d5ca8 60%,#1367b5 100%);color:#fff;padding:3.4rem 0;position:relative;overflow:hidden}
.hero::after{content:"";position:absolute;right:-40px;top:50%;transform:translateY(-50%);width:340px;height:340px;background:radial-gradient(circle,rgba(255,255,255,.08) 0,transparent 70%);border-radius:50%}
.hero h1{color:#fff}
.hero p{color:#d7e6f5}
.hero-grid{display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center}
.hero-illus{text-align:center}
.hero-illus img{max-width:100%;height:auto;border-radius:14px;box-shadow:0 12px 30px rgba(0,0,0,.35)}
.hero-illus figcaption{font-size:.8rem;color:#9fc4e5;margin-top:10px}

.card .ico{display:flex;align-items:center;justify-content:center;width:52px;height:52px;border-radius:10px;background:#eef5fb;margin-bottom:12px}
.card .ico img{width:34px;height:34px}

.cat-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:16px}
.cat-card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:18px;display:flex;gap:14px;align-items:center;transition:transform .15s,box-shadow .15s}
.cat-card:hover{transform:translateY(-3px);box-shadow:0 8px 22px rgba(13,92,168,.12)}
.cat-card img{width:46px;height:46px;flex-shrink:0}
.cat-card .name{font-weight:600;color:var(--brand-dark)}
.cat-card .meta{color:var(--muted);font-size:.85rem}

.art-figure{margin:1.4rem 0}
.art-figure img{width:100%;border-radius:10px;border:1px solid var(--line)}
.art-figure figcaption{font-size:.8rem;color:var(--muted);margin-top:8px;text-align:center}

.blog-card .ico{width:56px;height:56px;border-radius:10px;overflow:hidden;margin-bottom:10px}
.blog-card .ico img{width:100%;height:100%;object-fit:cover}

.badge-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:1rem}
.badge{display:inline-flex;align-items:center;gap:6px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.25);color:#fff;font-size:.8rem;padding:6px 12px;border-radius:20px;font-weight:600}
.badge img{width:16px;height:16px}

@media(max-width:700px){
  .hero-grid{grid-template-columns:1fr}
  .hero-illus{display:none}
}