/* Home page (Trang chủ) */
.pt-container{max-width:1100px;margin:0 auto;padding:0 16px}
.pt-section{padding:56px 0}
.pt-muted{opacity:.85;line-height:1.65;margin-top:8px}

.pt-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 16px;border-radius:12px;text-decoration:none;font-weight:700}
.pt-btn--primary{background:#111;color:#fff}
.pt-btn--ghost{border:1px solid rgba(255,255,255,.55);color:#fff;background:transparent}

.pt-hero{position:relative;min-height:540px;display:flex;align-items:center;overflow:hidden;
  background-image:var(--pt-hero-bg);background-size:cover;background-position:center}
.pt-hero:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg, rgba(0,0,0,.58), rgba(0,0,0,.18))}
\1
.pt-hero__bg-mobile{z-index:0}
.pt-hero:before{z-index:1}
.pt-hero__inner{z-index:2}
.pt-hero__inner{position:relative}
.pt-hero__content{color:#fff;padding:72px 0}
.pt-hero__content h1{font-size:34px;line-height:1.15;margin:0 0 12px;max-width:840px}
.pt-hero__desc{max-width:840px;margin:0 0 18px;opacity:.95}
.pt-hero__actions{display:flex;gap:12px;flex-wrap:wrap;margin:16px 0}
.pt-hero__meta{opacity:.9;font-size:14px;margin-top:14px}

.pt-split{display:grid;grid-template-columns:1.1fr .9fr;gap:22px;align-items:center}
.pt-bullets{margin:14px 0 0;padding-left:18px}
.pt-bullets li{margin:8px 0}

.pt-cardimg{width:100%;border-radius:16px;border:1px solid rgba(0,0,0,.08);box-shadow:0 10px 26px rgba(0,0,0,.05)}
.pt-placeholder{display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.04);
  border:1px dashed rgba(0,0,0,.18);border-radius:16px;color:rgba(0,0,0,.55)}

.pt-grid4{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:18px}
.pt-card{background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:14px;box-shadow:0 8px 22px rgba(0,0,0,.04)}
.pt-card__img{width:100%;height:140px;object-fit:cover;border-radius:12px;margin-bottom:10px;border:1px solid rgba(0,0,0,.06)}
.pt-card h3{margin:8px 0 6px;font-size:16px}

.pt-brands{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
.pt-brand{border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:16px;background:#fff;box-shadow:0 8px 22px rgba(0,0,0,.04)}
.pt-brand__img{width:100%;height:180px;object-fit:cover;border-radius:12px;margin-top:12px;border:1px solid rgba(0,0,0,.06)}
.pt-tag{font-size:12px;padding:4px 10px;border-radius:999px;display:inline-block;margin-left:8px}
.pt-tag--dark{background:#111;color:#fff}
.pt-tag--red{background:#b30000;color:#fff}
.pt-red{color:#b30000}

.pt-oem{border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:18px;background:#fff;box-shadow:0 8px 22px rgba(0,0,0,.04)}
.pt-contact__grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.pt-contact__info{border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:14px;background:#fff}
.pt-contact__row{margin:10px 0}
.pt-certgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.pt-cert{width:100%;height:110px;object-fit:contain;background:#fff;border:1px solid rgba(0,0,0,.08);border-radius:12px;padding:8px}

@media (max-width: 960px){
  .pt-grid4{grid-template-columns:repeat(2,1fr)}
  .pt-split{grid-template-columns:1fr}
  .pt-contact__grid{grid-template-columns:1fr}
}
@media (max-width: 640px){
  .pt-hero{background-image:none}
  .pt-hero__bg-mobile{display:block}
  .pt-hero__content{padding:56px 0}
  .pt-hero__content h1{font-size:28px}
  .pt-grid4{grid-template-columns:1fr}
  .pt-brands{grid-template-columns:1fr}
  .pt-certgrid{grid-template-columns:repeat(2,1fr)}
}