/* ============================================================
   RoadTech · รับทำถนนลาดยาง ยางมะตอย ลูกระนาด
   Premium Yellow + Dark-Charcoal Theme
   ============================================================ */
:root{
  --page-bg:#F6F9FF; --ink:#0F172A; --muted:#5B6472; --line:#DCE5F2;
  --grey:#2563EB; --grey-deep:#1D4ED8; --grey-dark:#1E3A8A;
  --amber:#F97316; --amber-deep:#EA580C; --amber-dark:#C2410C; --amber-light:#FB923C; --yellow:#F97316;
}
*{ -webkit-tap-highlight-color:transparent; }
html{ scroll-behavior:smooth; }
body{
  background:#F6F9FF;
  font-family:'Sarabun','IBM Plex Sans Thai',sans-serif;
  color:#0F172A; position:relative; overflow-x:hidden;
}
h1,h2,h3,.font-display{ font-family:'Kanit','Sarabun',sans-serif; }
body::before{
  content:""; position:fixed; inset:0; z-index:-1; pointer-events:none;
  background:
    radial-gradient(60rem 42rem at 85% -8%, rgba(37,99,235,.14), transparent 60%),
    radial-gradient(52rem 40rem at -10% 10%, rgba(249,115,22,.12), transparent 55%),
    radial-gradient(40rem 30rem at 50% 120%, rgba(59,130,246,.10), transparent 60%);
}
.gx{ background:linear-gradient(135deg,#3B82F6 0%,#2563EB 45%,#1D4ED8 100%); }
.gx-text{
  background:linear-gradient(135deg,#EA580C,#F97316);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
}
.sky-text{
  background:linear-gradient(135deg,#F97316,#FB923C);
  -webkit-background-clip:text; background-clip:text; -webkit-text-fill-color:transparent;
}
.glass{
  background:rgba(255,255,255,.82);
  backdrop-filter:blur(20px); -webkit-backdrop-filter:blur(20px);
  border:1px solid rgba(255,255,255,.6);
}
.text-balance{ text-wrap:balance; }
.sq{ aspect-ratio:1/1; object-fit:cover; }
.shadow-glow{ box-shadow:0 10px 40px -10px rgba(37,99,235,.40); }
.shadow-soft{ box-shadow:0 4px 30px rgba(15,23,42,.08); }
.shadow-card{ box-shadow:0 8px 40px rgba(15,23,42,.14); }
details>summary{ list-style:none; cursor:pointer; }
details>summary::-webkit-details-marker{ display:none; }
.ms{ font-family:'Material Symbols Outlined'; font-weight:normal; font-style:normal; line-height:1; -webkit-font-feature-settings:'liga'; vertical-align:middle; }
.eyebrow{ letter-spacing:.12em; }
.chip{ transition:transform .2s ease, box-shadow .2s ease, background .2s ease, color .2s ease; }
.chip:hover{ transform:translateY(-2px); background-image:linear-gradient(135deg,#F97316,#EA580C); color:#1D4ED8 !important; }
@keyframes rise{ from{ opacity:0; transform:translateY(18px);} to{ opacity:1; transform:none;} }
.reveal{ animation:rise .7s cubic-bezier(.22,.61,.36,1) both; }
.reveal.d1{ animation-delay:.08s; } .reveal.d2{ animation-delay:.16s; }
.reveal.d3{ animation-delay:.24s; } .reveal.d4{ animation-delay:.32s; }
img{ background:#DCE5F2; }
a{ text-decoration:none; }
iframe{ border:0; }