:root{
  --primary:#b42025;
  --primary-dark:#7e1317;
  --accent:#0f6f4b;
  --accent-2:#155a8a;
  --text:#16202a;
  --muted:#627182;
  --bg:#f4f6f8;
  --card:#ffffff;
  --line:#dbe2e8;
  --shadow:0 16px 40px rgba(17,24,39,.08);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:"Be Vietnam Pro",system-ui,sans-serif;
  color:var(--text);
  background:linear-gradient(180deg,#eef2f5 0%,#f8fafb 100%);
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:min(1180px,calc(100% - 32px));margin:0 auto}
.site-header{
  position:sticky;top:0;z-index:20;
  backdrop-filter:blur(10px);
  background:rgba(255,255,255,.92);
  border-bottom:1px solid rgba(219,226,232,.8);
}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:14px 0}
.brand{display:flex;align-items:center;gap:14px}
.brand img{width:68px;height:68px;object-fit:contain}
.brand-sub{font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--primary);text-transform:uppercase}
.brand-title{font-size:23px;font-weight:800;line-height:1.1}
.main-nav{display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.main-nav a{padding:10px 14px;border-radius:999px;color:#24303d;font-weight:600}
.main-nav a:hover{background:#eef2f5;color:var(--primary)}
.hero-banner{
  position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0c1620 0%,#172c3d 38%,#8b181d 100%);
  color:#fff;
}
.hero-overlay{position:absolute;inset:0;background:
  radial-gradient(circle at top right,rgba(255,255,255,.16),transparent 30%),
  linear-gradient(180deg,rgba(255,255,255,.03),rgba(255,255,255,0));}
.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:center;padding:68px 0 56px}
.eyebrow{display:inline-block;padding:8px 12px;border:1px solid rgba(255,255,255,.22);border-radius:999px;background:rgba(255,255,255,.08);font-size:12px;font-weight:700;letter-spacing:.12em}
.hero-copy h1{font-size:clamp(34px,5vw,58px);line-height:1.05;margin:18px 0 16px;max-width:760px}
.hero-copy p{font-size:18px;line-height:1.75;max-width:760px;color:rgba(255,255,255,.88)}
.hero-art img{filter:drop-shadow(0 18px 36px rgba(0,0,0,.32))}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border-radius:12px;font-weight:700;transition:.2s}
.btn-primary{background:#fff;color:var(--primary)}
.btn-primary:hover{transform:translateY(-2px)}
.btn-outline{border:1px solid rgba(255,255,255,.4);color:#fff;background:rgba(255,255,255,.06)}
.page-shell{padding:34px 0 12px}
.content-card,.dashboard-card,.feature-card{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow)}
.content-card{border-radius:22px;padding:28px}
.page-hero-image img{width:100%;border-radius:18px;margin-bottom:20px}
.prose h1,.prose h2,.prose h3{line-height:1.2;color:#102033}
.prose h2{margin-top:28px;padding-left:14px;border-left:5px solid var(--primary)}
.prose p,.prose li{line-height:1.8;color:#314152}
.prose table{width:100%;border-collapse:collapse;margin:20px 0;background:#fff}
.prose table th,.prose table td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.dashboard-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.dashboard-card{border-radius:22px;padding:22px;display:flex;gap:18px;align-items:center;min-height:180px;transition:.22s}
.dashboard-card:hover{transform:translateY(-4px);border-color:#cfd8e1}
.dashboard-card img{width:120px;flex:0 0 120px}
.dashboard-card h3{margin:0 0 10px;font-size:22px}
.dashboard-card p{margin:0;color:var(--muted);line-height:1.7}
.stat-card{background:linear-gradient(135deg,#f8fbfd,#eff4f7)}
.feature-strip{padding:10px 0 42px}
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{border-radius:22px;padding:24px}
.feature-card img{height:180px;object-fit:contain;margin:0 auto 12px}
.feature-card h3{margin:10px 0 8px;font-size:21px}
.feature-card p{margin:0;color:var(--muted);line-height:1.7}
.site-footer{margin-top:10px;padding:28px 0 40px;background:#0d1520;color:#cbd4dc}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:24px}
.site-footer h4{color:#fff;margin-top:0}
.site-footer ul{margin:0;padding-left:18px}
@media (max-width:980px){
  .hero-grid,.dashboard-grid,.feature-grid,.footer-grid{grid-template-columns:1fr}
  .topbar{flex-direction:column;align-items:flex-start}
  .main-nav{justify-content:flex-start}
}
@media (max-width:680px){
  .brand-title{font-size:19px}
  .hero-copy p{font-size:16px}
  .dashboard-card{flex-direction:column;align-items:flex-start}
}
/* Khung Banner chính */
.hero-banner {
    width: 100%;
    min-height: 450px;
    background-size: cover;
    background-position: center right; /* Ưu tiên hiện phần đường đèo bên phải */
    background-repeat: no-repeat;
    display: flex;
    align-items: center;
    padding: 0 10%;
}


.hero-content {
    position: relative;
    z-index: 2;
    max-width: 700px;
    padding: 20px;
    border-left: 5px solid #e31b23; /* Vạch đỏ nhận diện thương hiệu */
}

.hero-content h1 {
    font-size: 2.5rem;
    font-weight: bold;
    text-transform: uppercase;
    margin-bottom: 15px;
}

.hero-content p {
    font-size: 1.2rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* Nút bấm chuyển động */
.btn-cta {
    background-color: #e31b23; /* Đỏ */
    color: white;
    padding: 12px 30px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    transition: 0.3s;
}

.btn-cta:hover {
    background-color: #b3151a;
    box-shadow: 0 4px 15px rgba(227, 27, 35, 0.4);
}