:root {
  --blue:#073b78;
  --blue2:#0b66c3;
  --green:#22a447;
  --text:#16324f;
  --bg:#f7fbff;
  --shadow:0 14px 36px rgba(4,42,84,.14);
  --radius:20px
}
* {
  box-sizing:border-box
}
body {
  margin:0;
  font-family:Arial,Helvetica,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.2;
}
a {
  text-decoration:none;
  color:inherit
}
.container {
  max-width:1180px;
  margin:auto;
  padding:0 20px
}
.btn {
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 5px;
  border-radius:999px;
  border:0;
  font-weight: bolder;
  cursor:pointer
}
.btn-primary {
  background:linear-gradient(135deg,var(--green),var(--blue2));
  color:#fff
}
.btn-light {
  background:#fff;
  color: #028a0c;
  box-shadow:0 8px 20px rgba(0,0,0,.08)
}
header {
  position:sticky;
  top:0;
  z-index:10;
  background:rgba(255,255,255,.94);
  box-shadow:0 4px 20px rgba(0,0,0,.06)
}
.nav {
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding: 5px 0;
}
.brand {
  display:flex;
  gap:5px;
  align-items:center;
  font-weight:900;
  color:var(--blue)
}
.brand img {
  width: 100px;
  height: auto;
  object-fit:contain
}
.hero {
  background:linear-gradient(120deg,#073b78,#0b66c3,#22a447);
  color:white
}
.hero-inner {
  display:grid;
  grid-template-columns:1fr .9fr;
  gap:28px;
  align-items:center;
  padding:20px 0;
}
.hero h1 {
  font-size:50px;
  line-height:1.1;
  margin:0 0 16px
}
.hero p {
  font-size:19px
}
.card {
  background:white;
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:26px;
  color:var(--text)
}
input,
select,
textarea {
  width:100%;
  padding:13px;
  border:1px solid #d8e6f2;
  border-radius:13px;
  margin-bottom:12px;
  font-size:15px
}
.section {
  padding: 22px;
}
.title {
  text-align:center;
  max-width:780px;
  margin:0 auto 32px
}
.title h2 {
  font-size:36px;
  color: #028a0c;
  margin:0 0 8px
}
.grid-3 {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:5px;
}
.item {
  background:white;
  border-radius:10px;
  padding:8px;
  box-shadow:0 8px 24px rgba(0,0,0,.07)
}
.item img {
  width:100%;
  height:65%;
  object-fit:cover;
  border-radius:16px
}
.article-content {
  background:white;
  border-radius:22px;
  padding:34px;
  box-shadow:var(--shadow)
}
footer {
  background: #028a0c;
  color:#d7e8f7;
  padding:30px 0
}
.floating {
  position:fixed;
  right:18px;
  bottom:18px;
  display:flex;
  flex-direction:column;
  gap:10px
}
.floating a {
  color:white;
  border-radius:999px;
  padding:12px 17px;
  font-weight:900;
  box-shadow:0 8px 20px rgba(0,0,0,.25)
}
.call {
  background:#0b66c3
}
.zalo {
  background:#22a447
}
@media(max-width:900px) {
  .hero-inner,
  .grid-3 {
    grid-template-columns:1fr
  }
  .hero h1 {
    font-size:38px
  }
  .nav .btn-light {
    display:none
  }
}