*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --primary:#4a90a4;
  --primary-dark:#2c6e85;
  --primary-light:#e8f4f8;
  --accent:#7bb8c9;
  --text:#2d3748;
  --text-light:#64748b;
  --bg:#ffffff;
  --bg-alt:#f7fbfc;
  --border:#e2e8f0;
}
body{font-family:'Georgia',serif;line-height:1.7;color:var(--text);background:var(--bg)}
.container{max-width:1100px;margin:0 auto;padding:0 1.5rem}
a{color:var(--primary-dark);text-decoration:none;transition:color 0.2s}
a:hover{color:var(--primary)}
img{max-width:100%;height:auto;display:block;border-radius:8px}

/* Header */
header{background:var(--bg);border-bottom:1px solid var(--border);padding:1rem 0;position:sticky;top:0;z-index:100}
header nav{display:flex;justify-content:space-between;align-items:center}
.brand {display: inline-flex;align-items:center;gap:0.5rem;font-weight:700;font-size:1.15rem;color:var(--primary-dark)}
.brand svg{width:36px;height:36px}
.nav-links{display:flex;gap:1.5rem;list-style:none}
.nav-links a{color:var(--text-light);font-size:0.95rem;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
.nav-links a:hover,.nav-links a.active{color:var(--primary-dark);font-weight:500}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:0.5rem}
.nav-toggle span{display:block;width:24px;height:2px;background:var(--text);margin:5px 0;transition:0.3s}

/* Hero */
.hero{background:var(--primary-light);padding:5rem 1.5rem;text-align:center}
.hero h1{font-size:2.5rem;color:var(--primary-dark);margin-bottom:1rem;line-height:1.2}
.hero p{font-size:1.15rem;color:var(--text-light);max-width:640px;margin:0 auto 1.5rem}
.hero-img{max-width:800px;margin:2rem auto 0;border-radius:12px;box-shadow:0 8px 30px rgba(0,0,0,0.08)}
.btn{display:inline-block;background:var(--primary);color:#fff;padding:0.75rem 2rem;border-radius:6px;font-size:1rem;font-family:-apple-system,sans-serif;transition:background 0.2s}
.btn:hover{background:var(--primary-dark);color:#fff}

/* Sections */
section{padding:4rem 0}
section.alt{background:var(--bg-alt)}
h2{font-size:1.8rem;color:var(--primary-dark);margin-bottom:1.5rem}
h3{font-size:1.3rem;color:var(--text);margin-bottom:0.75rem}
p{margin-bottom:1rem}

/* Grid */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:center}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}

/* Cards */
.card{background:var(--bg);border:1px solid var(--border);border-radius:10px;padding:2rem;transition:box-shadow 0.2s}
.card:hover{box-shadow:0 4px 20px rgba(74,144,164,0.1)}
.card h3{color:var(--primary-dark)}
.card p{color:var(--text-light);font-size:0.95rem}

/* Article */
.article-content{max-width:750px;margin:0 auto}
.article-content h2{font-size:1.5rem;margin-top:2.5rem}
.article-content h3{font-size:1.2rem;margin-top:2rem}
.article-content p{font-size:1.05rem}
.article-content ul,.article-content ol{margin:1rem 0 1.5rem 1.5rem}
.article-content li{margin-bottom:0.5rem;font-size:1.05rem}
.article-hero{width:100%;max-height:400px;object-fit:cover;margin-bottom:2rem}

/* Footer */
footer{background:var(--primary-dark);color:#c8dce3;padding:3rem 0;font-family:-apple-system,sans-serif}
footer a{color:#e8f4f8}
footer a:hover{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem}
.footer-grid h4{color:#fff;margin-bottom:0.75rem;font-size:1rem}
.footer-grid p,.footer-grid li{font-size:0.9rem}
.footer-grid ul{list-style:none}
.footer-grid li{margin-bottom:0.4rem}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.15);margin-top:2rem;padding-top:1.5rem;text-align:center;font-size:0.85rem}

/* Responsive */
@media(max-width:768px){
  .grid-2{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .hero h1{font-size:1.8rem}
  .hero{padding:3rem 1rem}
  .nav-links{display:none;flex-direction:column;position:absolute;top:100%;left:0;right:0;background:var(--bg);padding:1rem 1.5rem;border-bottom:1px solid var(--border);gap:1rem}
  .nav-links.active{display:flex}
  .nav-toggle{display:block}
  header nav{position:relative}
}

.brand-icon { width: 24px; height: 24px; flex-shrink: 0; vertical-align: middle; margin-right: 6px; }