*{margin:0;padding:0;box-sizing:border-box}
body{font-family:system-ui,-apple-system,sans-serif;color:#1a1a2e;background:#f8f9fa;min-height:100vh;display:flex;flex-direction:column}
header{background:#1a1a2e;color:#fff;padding:1.2rem 2rem;display:flex;justify-content:space-between;align-items:center}
header a{color:#fff;text-decoration:none;font-size:1.3rem;font-weight:700}
header nav a{font-size:0.95rem;font-weight:400;margin-left:1.5rem;opacity:0.85}
header nav a:hover{opacity:1}
.hero{background:linear-gradient(135deg,#1a1a2e 0%,#16213e 50%,#0f3460 100%);color:#fff;padding:4rem 2rem;text-align:center}
.hero h1{font-size:2.5rem;margin-bottom:0.5rem;letter-spacing:-0.02em}
.hero .tagline{font-size:1.2rem;opacity:0.85;margin-bottom:2rem}
.content{max-width:720px;margin:0 auto;padding:3rem 2rem}
.card{background:#fff;border-radius:12px;padding:2.5rem;box-shadow:0 2px 12px rgba(0,0,0,0.08);margin-bottom:2rem}
.card h2{color:#0f3460;margin-bottom:1rem;font-size:1.5rem}
.card p{line-height:1.7;color:#444;margin-bottom:1rem}
.card ul{line-height:1.7;color:#444;margin-bottom:1rem;padding-left:1.5rem}
.highlight{background:#e8f4f8;border-left:4px solid #0f3460;padding:1rem 1.5rem;border-radius:0 8px 8px 0;margin:1.5rem 0}
.highlight strong{color:#0f3460}
.form-section{background:#0f3460;color:#fff;border-radius:12px;padding:2.5rem;text-align:center;margin:2rem 0}
.form-section h2{margin-bottom:0.5rem}
.form-section p{opacity:0.85;margin-bottom:1.5rem}
.form-section form{display:flex;flex-direction:column;gap:0.75rem;max-width:400px;margin:0 auto}
.form-section input[type="email"]{padding:0.75rem 1rem;border:none;border-radius:8px;font-size:1rem;width:100%}
.form-section label{font-size:0.85rem;text-align:left;display:flex;align-items:flex-start;gap:0.5rem}
.form-section label input[type="checkbox"]{margin-top:3px}
.form-section button{background:#e94560;color:#fff;border:none;padding:0.75rem;border-radius:8px;font-size:1rem;cursor:pointer;font-weight:600;transition:background 0.2s}
.form-section button:hover{background:#c73650}
.benefits{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1.5rem;margin:1.5rem 0}
.benefit{text-align:center;padding:1rem}
.benefit .icon{font-size:2rem;margin-bottom:0.5rem}
.benefit h3{font-size:1rem;margin-bottom:0.25rem}
.benefit p{font-size:0.85rem;color:#666}
/* Hub page */
.topics{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:2rem;margin:2rem 0}
.topic-card{background:#fff;border-radius:12px;padding:2rem;box-shadow:0 2px 12px rgba(0,0,0,0.08);transition:transform 0.2s,box-shadow 0.2s;text-decoration:none;color:inherit;display:block}
.topic-card:hover{transform:translateY(-4px);box-shadow:0 8px 24px rgba(0,0,0,0.12)}
.topic-card .icon{font-size:2.5rem;margin-bottom:1rem}
.topic-card h2{color:#0f3460;margin-bottom:0.5rem;font-size:1.3rem}
.topic-card p{color:#666;line-height:1.6;font-size:0.95rem}
.topic-card .tag{display:inline-block;background:#e8f4f8;color:#0f3460;padding:0.25rem 0.75rem;border-radius:20px;font-size:0.8rem;margin-top:1rem;font-weight:600}
footer{text-align:center;padding:2rem;font-size:0.85rem;color:#888;margin-top:auto}
footer a{color:#0f3460;text-decoration:none}
footer a:hover{text-decoration:underline}
@media(max-width:600px){.hero h1{font-size:1.8rem}.hero .tagline{font-size:1rem}.content{padding:1.5rem 1rem}.card{padding:1.5rem}header{flex-direction:column;gap:0.5rem}header nav a{margin-left:0.75rem}}