:root{
  --ink:#0f172a;
  --muted:#64748b;
  --line:#e2e8f0;
  --paper:#fff;
  --brand:#2563eb;
  --brand-ink:#1e40af;
  --soft:#eff6ff;
  --r:18px;
  --sh:0 16px 30px rgba(15,23,42,.03);
}
*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:#f8fafc;
  color:var(--ink);
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  line-height:1.7;
}
img{max-width:100%;height:auto;display:block;border-radius:14px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

/* NAV */
header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:15}
.topbar{
  width:min(1140px,94%);
  margin:0 auto;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  padding:.6rem 0;
}
.topbar nav a{
  padding:.5rem .9rem;
  border-radius:999px;
  color:var(--ink);
  font-weight:500;
}
.topbar nav a.active,
.topbar nav a:hover{
  background:rgba(37,99,235,.08);
  text-decoration:none;
}

/* HERO */
.c926d1a5225{
  width:min(1140px,94%);
  margin:.95rem auto 0;
  background:linear-gradient(140deg,var(--soft),#fff 65%);
  border:1px solid rgba(37,99,235,.05);
  border-radius:22px;
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:1.2rem;
  padding:1.3rem 1.2rem 1.1rem;
  box-shadow:var(--sh);
}
.c926d1a5225 h1{font-size:clamp(1.8rem,3vw,2.55rem);margin-bottom:.4rem}
.c926d1a5225 .c4f1a90efee{color:var(--muted);max-width:550px}
.cf06ba7ee52{
  display:inline-block;
  background:rgba(37,99,235,.12);
  color:var(--brand-ink);
  padding:.2rem .65rem;
  border-radius:999px;
  font-weight:600;
  font-size:.68rem;
}

/* SECTION */
.section{
  width:min(1140px,94%);
  margin:1.05rem auto 0;
}
.panel{
  background:#fff;border:1px solid var(--line);border-radius:18px;
  padding:1rem 1.1rem;box-shadow:var(--sh);
}
h2{font-size:1.25rem;margin:.2rem 0 .6rem}

/* grids */
.cards{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(230px,1fr));
  gap:1rem;
}
.c7fb5b30276{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:.8rem .95rem 1rem;box-shadow:var(--sh);
}
.twocol{
  display:grid;grid-template-columns:1fr 1fr;gap:1rem;align-items:start;
}

/* timeline */
.timeline{list-style:none;margin:.5rem 0 0;padding:0}
.timeline li{position:relative;padding-left:1.25rem;margin:.35rem 0}
.timeline li::before{
  content:"";position:absolute;left:.25rem;top:.58rem;width:.4rem;height:.4rem;border-radius:999px;background:var(--brand)
}

/* contact form */
button,input,textarea{font:inherit}
.contact-form{display:grid;gap:12px;max-width:760px}
.contact-form .row-2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.contact-form input,
.contact-form textarea{
  width:100%;padding:.85rem 1rem;border:1px solid var(--line);
  border-radius:14px;background:#fff;
}
.contact-form textarea{resize:vertical}
.contact-form button{
  width:auto;justify-self:start;padding:.8rem 1.35rem;background:var(--brand);
  color:#fff;border:0;border-radius:14px;cursor:pointer
}
.contact-form button:hover{background:var(--brand-ink)}

/* footer */
footer{
  width:min(1140px,94%);
  margin:1.2rem auto 1.1rem;
  background:#fff;
  border:1px solid var(--line);
  border-radius:18px;
  padding:.9rem 1.1rem;
}
.footer-grid{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:1rem
}
/* chữ footer đậm hơn cho dễ nhìn */
.small{
  color:#0f172a;   /* đậm hơn */
  font-size:.78rem;
}
.small a{color:#0f172a;text-decoration:none}
.small a:hover{text-decoration:underline}

/* responsive */
@media(max-width:940px){
  .c926d1a5225{grid-template-columns:1fr}
  .twocol{grid-template-columns:1fr}
}
@media(max-width:640px){
  .topbar{flex-wrap:wrap;justify-content:center}
  .contact-form .row-2{grid-template-columns:1fr}
}