*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Arial,"Noto Sans Thai",Tahoma,sans-serif;
  background:#030303;
  color:#fff;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}

:root{
  --gold:#f8c85a;
  --gold2:#ffe08a;
  --dark:#060606;
  --panel:#0b0a07;
  --line:rgba(248,200,90,.28);
}

.page{
  min-height:100vh;
  background:
    radial-gradient(circle at top right,rgba(248,200,90,.18),transparent 28%),
    linear-gradient(180deg,#050505 0%,#090805 42%,#020202 100%);
}

.topbar{
  position:sticky;
  top:0;
  z-index:50;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:16px 18px;
  background:rgba(0,0,0,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px);
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  min-width:0;
}
.brand-logo{
  width:58px;
  height:58px;
  border-radius:50%;
  filter:drop-shadow(0 0 14px rgba(248,200,90,.35));
}
.brand-text strong{
  display:block;
  font-size:25px;
  line-height:1;
  color:var(--gold);
  letter-spacing:.3px;
}
.brand-text span{
  display:block;
  margin-top:5px;
  font-size:11px;
  letter-spacing:7px;
  color:#d6a94d;
}

.top-actions{
  display:flex;
  gap:10px;
  align-items:center;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:54px;
  padding:10px 16px;
  border-radius:17px;
  font-weight:800;
  font-size:15px;
  line-height:1.25;
  text-align:center;
  transition:.2s ease;
}
.btn-outline{
  color:var(--gold2);
  border:1px solid rgba(248,200,90,.55);
  background:rgba(255,255,255,.02);
}
.btn-gold{
  color:#111;
  background:linear-gradient(180deg,#ffe991,#d8941c);
  box-shadow:0 8px 22px rgba(216,148,28,.35);
}
.btn:active{transform:scale(.97)}

.hero-clean{
  padding:16px 16px 34px;
}
.hero-image-wrap{
  border-radius:24px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 22px 55px rgba(0,0,0,.55),0 0 35px rgba(248,200,90,.15);
  background:#111;
}
.hero-img{
  width:100%;
  aspect-ratio:4/3;
  object-fit:cover;
  object-position:center;
}

.hero-copy{
  padding:24px 4px 14px;
  text-align:left;
}
.eyebrow{
  margin:0 0 8px;
  font-size:18px;
  font-weight:800;
  color:#fff;
}
.hero-copy h1{
  margin:0;
  font-size:42px;
  line-height:1.08;
  letter-spacing:-1px;
  color:var(--gold);
}
.hero-copy h1 span{color:#fff}
.hero-sub{
  margin:14px 0 0;
  font-size:17px;
  line-height:1.6;
  color:rgba(255,255,255,.86);
}

.quick-contact{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
  margin-top:14px;
}
.quick-contact a{
  border-radius:22px;
  overflow:hidden;
  border:1px solid rgba(248,200,90,.22);
  box-shadow:0 16px 38px rgba(0,0,0,.55);
  background:#080808;
}
.quick-contact img{
  width:100%;
  border-radius:20px;
}

.promo-section,.why-section{
  padding:34px 16px;
  border-top:1px solid rgba(248,200,90,.12);
}
.promo-section h2,.why-section h2{
  margin:0 0 10px;
  text-align:center;
  font-size:30px;
  color:var(--gold);
}
.promo-section p{
  margin:0 auto 18px;
  max-width:620px;
  text-align:center;
  font-size:17px;
  line-height:1.6;
  color:rgba(255,255,255,.82);
}
.promo-card{
  display:block;
  border-radius:22px;
  overflow:hidden;
  border:1px solid var(--line);
  box-shadow:0 18px 45px rgba(0,0,0,.55);
}
.promo-card img{
  width:100%;
  border-radius:20px;
}

.why-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px;
  margin-top:20px;
}
.why-card{
  min-height:150px;
  padding:18px 14px;
  border-radius:20px;
  border:1px solid var(--line);
  background:linear-gradient(180deg,rgba(255,255,255,.045),rgba(255,255,255,.012));
  box-shadow:0 14px 34px rgba(0,0,0,.32);
}
.why-icon{
  width:48px;
  height:48px;
  display:grid;
  place-items:center;
  margin-bottom:12px;
  border-radius:50%;
  border:1px solid rgba(248,200,90,.45);
  font-size:24px;
}
.why-card h3{
  margin:0 0 6px;
  font-size:19px;
  line-height:1.25;
  color:var(--gold);
}
.why-card p{
  margin:0;
  font-size:14px;
  line-height:1.45;
  color:rgba(255,255,255,.82);
}

.footer{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:26px 16px 40px;
  color:rgba(255,255,255,.65);
  font-size:13px;
}
.footer img{
  width:42px;
  height:42px;
  border-radius:50%;
}
.back-top{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:45;
  width:54px;
  height:54px;
  display:grid;
  place-items:center;
  border-radius:50%;
  color:#111;
  font-size:26px;
  font-weight:900;
  background:linear-gradient(180deg,#ffe991,#d8941c);
  box-shadow:0 12px 28px rgba(0,0,0,.45);
}

/* desktop */
@media (min-width:900px){
  .topbar{
    padding:18px 8vw;
  }
  .brand-logo{width:68px;height:68px}
  .brand-text strong{font-size:30px}
  .hero-clean{
    max-width:1180px;
    margin:0 auto;
    display:grid;
    grid-template-columns:1.05fr .95fr;
    grid-template-areas:
      "copy image"
      "contact image";
    gap:26px;
    align-items:center;
    padding:54px 22px;
  }
  .hero-image-wrap{grid-area:image}
  .hero-copy{grid-area:copy;padding:0}
  .quick-contact{
    grid-area:contact;
    grid-template-columns:repeat(3,1fr);
  }
  .hero-copy h1{font-size:58px}
  .promo-section,.why-section{
    max-width:1180px;
    margin:0 auto;
    padding-left:22px;
    padding-right:22px;
  }
  .why-grid{grid-template-columns:repeat(4,1fr)}
}

/* compact mobile */
@media (max-width:430px){
  .topbar{
    padding:14px 12px;
  }
  .brand-logo{
    width:52px;
    height:52px;
  }
  .brand-text strong{
    font-size:22px;
  }
  .brand-text span{
    letter-spacing:5px;
    font-size:10px;
  }
  .btn{
    min-height:50px;
    padding:8px 12px;
    font-size:14px;
    border-radius:15px;
  }
  .hero-clean{
    padding:12px 12px 28px;
  }
  .hero-image-wrap{
    border-radius:20px;
  }
  .hero-copy h1{
    font-size:37px;
  }
  .quick-contact{
    gap:12px;
  }
  .why-grid{
    gap:12px;
  }
}