/* Shared styles for every FR Tech page. Page-specific styles stay in each page's <style>.
   Design: dark premium + clean energy. Orange is for emphasis only (CTAs, active links, icons, key numbers). */
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
:root{
  --bg:#080808;--bg-2:#111214;--bg-3:#17191c;--bg-4:#1e2024;
  --text:#fff;--text-2:#b9bdc4;--text-3:#8b9099;
  --line:rgba(255,255,255,.09);--line-2:rgba(255,255,255,.16);
  --accent:#f57f20;--accent-hi:#ff9440;--accent-soft:rgba(245,127,32,.12);
  --blue:#284f98;--blue-hi:#6f97e0;--blue-text:#4a7bd4;--blue-soft:rgba(40,79,152,.28);
  --radius:18px;--radius-sm:12px;
  /* English text uses Inter; Thai glyphs fall through to Kanit. */
  --font:'Inter','Kanit',system-ui,-apple-system,'Segoe UI',sans-serif;
  --num:'Inter','Kanit',system-ui,sans-serif;
  /* legacy names still used by inline styles in older pages */
  --ink:var(--text);--ink-2:var(--text-2);--ink-3:var(--text-3);--paper:var(--bg);--paper-2:var(--bg-3);--white:var(--bg-2);--black:var(--bg);
}
body{font-family:var(--font);background:var(--bg);color:var(--text);font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;overflow-x:hidden}
/* ambient background: two soft blue glows drift slowly behind the content (transform only, so it stays cheap) */
body::before,body::after{content:"";position:fixed;z-index:-1;border-radius:50%;pointer-events:none;will-change:transform}
body::before{width:80vmax;height:80vmax;left:-30vmax;top:-30vmax;background:radial-gradient(closest-side,rgba(40,79,152,.24),rgba(40,79,152,.08) 55%,transparent);animation:bgDriftA 40s ease-in-out infinite alternate}
body::after{width:70vmax;height:70vmax;right:-28vmax;bottom:-30vmax;background:radial-gradient(closest-side,rgba(61,111,208,.16),rgba(245,127,32,.035) 62%,transparent);animation:bgDriftB 52s ease-in-out infinite alternate}
@keyframes bgDriftA{50%{transform:translate(28vw,30vh) scale(1.1)}100%{transform:translate(52vw,58vh) scale(.95)}}
@keyframes bgDriftB{50%{transform:translate(-26vw,-22vh) scale(.92)}100%{transform:translate(-50vw,-46vh) scale(1.08)}}
.stats b,.facts-row b{font-variant-numeric:tabular-nums}
:lang(th),[lang="th"]{font-family:'Kanit',var(--font)}
img{display:block;max-width:100%}
a{color:inherit}
::selection{background:var(--accent);color:#000}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.wrap{max-width:1240px;margin:0 auto;padding:0 32px}

/* ---------- header ---------- */
header{position:sticky;top:0;z-index:50;background:#080808;border-bottom:1px solid var(--line);transition:background .35s,border-color .35s,box-shadow .35s}
/* Homepage: header floats over the hero, then turns solid black once you scroll. */
header.overlay{position:fixed;left:0;right:0;background:linear-gradient(180deg,rgba(8,8,8,.7),rgba(8,8,8,0));border-bottom-color:transparent}
header.scrolled,header.menu-open{background:#080808;border-bottom-color:var(--line);box-shadow:0 10px 30px -12px rgba(0,0,0,.8)}
.hd{display:flex;align-items:center;justify-content:space-between;height:84px;gap:32px}
/* Header brand: larger logo (native ratio 296:223) + company name on one line, divided by a thin rule. */
.hd .brand{gap:16px}
.hd .brand img{height:54px;width:auto;aspect-ratio:296/223;object-fit:contain}
.brand-name{font-family:'Inter','Helvetica Neue',Arial,sans-serif;font-size:15px;font-weight:600;letter-spacing:.01em;color:#fff;white-space:nowrap;padding-left:16px;border-left:1px solid var(--line-2);line-height:1.3}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;flex-shrink:0}
.brand img{height:36px;width:auto}
/* Brand text is always Latin sans-serif, never the Thai fallback. */
.brand span{font-family:'Inter','Helvetica Neue',Arial,sans-serif;line-height:1.2}
.brand b{display:block;font-weight:700;letter-spacing:.08em;font-size:15px}
.brand small{display:block;font-size:11px;color:var(--text-3);font-weight:500;letter-spacing:.03em;margin-top:2px}
.nav{display:flex;align-items:center;gap:2px;font-size:15px;font-weight:500}
.nav a{position:relative;text-decoration:none;color:#fff;padding:10px 11px;transition:color .25s;white-space:nowrap}
.nav a::after{content:"";position:absolute;left:11px;right:11px;bottom:4px;height:2px;border-radius:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s cubic-bezier(.2,.7,.2,1)}
.nav a:hover,.nav a[aria-current]{color:var(--accent)}
.nav a:hover::after,.nav a[aria-current]::after{transform:scaleX(1)}
.nav .cta{margin-left:8px;padding:9px 18px;border:1px solid rgba(245,127,32,.6);border-radius:999px}
.nav .cta::after{display:none}
.nav .cta:hover,.nav .cta[aria-current]{background:var(--accent);color:#0b0b0b;border-color:var(--accent)}
.menu-btn{display:none;position:relative;width:46px;height:46px;background:rgba(255,255,255,.04);border:1px solid var(--line-2);border-radius:12px;cursor:pointer;flex-shrink:0}
.menu-btn span{position:absolute;left:13px;right:13px;height:2px;border-radius:2px;background:#fff;transition:transform .3s,opacity .2s,top .3s}
.menu-btn span:nth-child(1){top:15px}.menu-btn span:nth-child(2){top:22px}.menu-btn span:nth-child(3){top:29px}
.menu-btn[aria-expanded="true"] span:nth-child(1){top:22px;transform:rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){top:22px;transform:rotate(-45deg)}
.menu-btn:hover{border-color:rgba(245,127,32,.6)}
.mnav{display:none;background:#080808;border-top:1px solid var(--line);padding:8px 32px 24px;max-height:calc(100vh - 84px);overflow-y:auto}
.mnav a{display:flex;align-items:center;justify-content:space-between;padding:15px 4px;color:#fff;text-decoration:none;border-bottom:1px solid var(--line);font-size:17px;font-weight:500;transition:color .2s,padding .2s}
.mnav a::after{content:"→";color:var(--text-3);transition:color .2s,transform .2s}
.mnav a:hover,.mnav a[aria-current]{color:var(--accent)}
.mnav a:hover::after,.mnav a[aria-current]::after{color:var(--accent);transform:translateX(3px)}
.mnav .cta{margin-top:18px;justify-content:center;border:0;border-radius:999px;background:var(--accent);color:#0b0b0b;font-weight:600}
.mnav .cta::after{display:none}
.mnav .cta:hover{color:#0b0b0b;background:var(--accent-hi)}
.mnav.open{display:block}

/* ---------- buttons ---------- */
.btn{position:relative;display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:15px;font-weight:600;padding:15px 26px;border-radius:999px;border:1px solid transparent;transition:background .25s,border-color .25s,transform .25s,box-shadow .35s,color .25s;cursor:pointer;font-family:inherit}
.btn svg{width:18px;height:18px;transition:transform .25s}
.btn:hover svg{transform:translateX(4px)}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--accent);color:#0b0b0b;box-shadow:0 0 0 0 rgba(245,127,32,0)}
.btn-primary:hover{background:var(--accent-hi);transform:translateY(-2px);box-shadow:0 12px 32px -8px rgba(245,127,32,.55)}
.btn-primary:active{background:#e06f14;box-shadow:0 4px 14px -6px rgba(245,127,32,.6)}
.btn-ghost{border-color:var(--line-2);color:#fff;background:rgba(255,255,255,.03)}
.btn-ghost:hover{border-color:rgba(255,255,255,.4);background:rgba(255,255,255,.07)}
/* text link with arrow, for secondary actions */
.link-arrow{display:inline-flex;align-items:center;gap:10px;padding:15px 6px;color:#fff;font-size:15px;font-weight:600;text-decoration:none;position:relative;transition:color .25s}
.link-arrow::after{content:"";position:absolute;left:6px;right:34px;bottom:10px;height:1px;background:rgba(255,255,255,.35);transform-origin:left;transition:background .25s,transform .35s}
.link-arrow svg{width:18px;height:18px;transition:transform .25s}
.link-arrow:hover{color:var(--accent)}
.link-arrow:hover::after{background:var(--accent)}
.link-arrow:hover svg{transform:translateX(4px)}
.link-arrow:active{opacity:.8}

/* ---------- shared bits ---------- */
.eyebrow{display:inline-flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin-bottom:20px}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.meta{font-size:12px;color:var(--text-3);margin-bottom:6px;letter-spacing:.02em}
.crumb{font-size:14px;margin-bottom:28px}
.crumb a{text-decoration:none;color:var(--text-3);transition:color .2s}
.crumb a:hover{color:var(--accent)}
.hl{color:var(--accent)}
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .8s cubic-bezier(.2,.7,.2,1),transform .8s cubic-bezier(.2,.7,.2,1)}
.js .reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .reveal{opacity:1;transform:none;transition:none}
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important}
}

/* ---------- footer ---------- */
footer{position:relative;background:var(--bg);color:var(--text-3);font-size:14px;border-top:1px solid var(--line);overflow:hidden}
.ft{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding:28px 32px;max-width:1240px;margin:0 auto}
.ft nav{display:flex;gap:22px;flex-wrap:wrap}
.ft a{text-decoration:none;transition:color .2s}
.ft a:hover{color:var(--accent)}

/* ---------- listing pages (news/index, projects/index) ---------- */
.page-head{position:relative;padding:88px 0 48px;border-bottom:1px solid var(--line);overflow:hidden;background:radial-gradient(60% 120% at 85% 0%,var(--blue-soft),transparent 60%),radial-gradient(40% 80% at 10% 0%,rgba(245,127,32,.10),transparent 60%)}
.page-head::after{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 85%);-webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.6),transparent 85%);pointer-events:none}
.page-head .wrap{position:relative;z-index:1}
.page-head h1{font-size:clamp(2.4rem,5vw,4rem);line-height:1.05;font-weight:600;letter-spacing:-.035em;margin-bottom:14px}
.page-head p{color:var(--text-2);max-width:580px;font-size:17px}
.filters{display:flex;gap:8px;flex-wrap:wrap;margin-top:32px}
.filters button{font:inherit;font-size:14px;background:rgba(255,255,255,.03);border:1px solid var(--line-2);color:var(--text-2);padding:8px 18px;border-radius:999px;cursor:pointer;transition:all .2s}
.filters button:hover{border-color:rgba(255,255,255,.4);color:#fff}
.filters button.on{background:var(--accent);border-color:var(--accent);color:#0b0b0b;font-weight:600}
.listing{padding:56px 0 104px}
.work{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.item{text-decoration:none;display:flex;flex-direction:column;background:var(--bg-2);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color .3s,transform .3s}
.item:hover{border-color:rgba(245,127,32,.45);transform:translateY(-4px)}
.item .ph{position:relative;aspect-ratio:16/10;overflow:hidden;display:flex;align-items:flex-end;padding:18px;background:radial-gradient(80% 100% at 100% 0%,var(--blue-soft),transparent 70%),linear-gradient(135deg,#15171b,#0c0d0f)}
.item .ph::before{content:"";position:absolute;inset:0;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:32px 32px;opacity:.7}
.item .ph img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.2,1)}
.item:hover .ph img{transform:scale(1.05)}
.item .ph span{position:relative;font-size:12px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:.12em}
.item .meta{padding:20px 22px 0}
.item h3{font-size:18px;font-weight:600;line-height:1.35;margin:0 22px 8px;letter-spacing:-.01em;transition:color .2s}
.item:hover h3{color:var(--accent)}
.item p{font-size:14px;color:var(--text-2);margin:0 22px}
.item>:last-child{margin-bottom:24px}

/* ---------- article pages (news + project detail) ---------- */
.art-head{position:relative;padding:80px 0 48px;background:radial-gradient(50% 100% at 90% 0%,var(--blue-soft),transparent 60%)}
.art-head .eyebrow{margin-bottom:18px}
.art-head h1{font-size:clamp(2rem,4.2vw,3.4rem);line-height:1.1;font-weight:600;letter-spacing:-.03em;margin-bottom:18px;max-width:900px}
.art-head h1 small{display:block;font-size:.55em;font-weight:500;color:var(--text-2);letter-spacing:-.01em;margin-top:10px}
.art-head .lede{font-size:19px;color:var(--text-2);max-width:740px}
.facts-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px;font-size:14px;color:var(--text-3)}
.facts-row span{padding:8px 14px;border:1px solid var(--line-2);border-radius:999px;background:rgba(255,255,255,.02)}
.facts-row b{color:#fff;font-weight:500;margin-left:4px}
.cover{margin-bottom:8px}
.cover img{width:100%;max-height:640px;object-fit:cover;border-radius:var(--radius)}
.cover figcaption{font-size:13px;color:var(--text-3);margin-top:10px}
.art{padding:48px 0 96px}
.art-grid{display:grid;grid-template-columns:230px 1fr;gap:64px}
.side{font-size:14px;color:var(--text-2)}
.side h4{font-size:12px;font-weight:600;color:var(--accent);letter-spacing:.14em;text-transform:uppercase;margin-bottom:12px}
.side ul{list-style:none}
.side li{padding:9px 0;border-bottom:1px solid var(--line)}
.prose{max-width:740px}
.prose h2{font-size:24px;font-weight:600;letter-spacing:-.015em;margin:48px 0 14px}
.prose h2:first-child{margin-top:0}
.prose p{font-size:17px;color:#d4d7dc;margin-bottom:16px;line-height:1.8}
.prose p.en{font-size:15px;color:var(--text-3);margin-top:-6px;margin-bottom:24px}
.prose strong{font-weight:600;color:#fff}
.prose a{color:var(--accent)}
.prose ul.plain{list-style:none;margin-bottom:16px;font-size:17px;color:#d4d7dc}
.prose ul.plain li{padding:6px 0 6px 20px;position:relative}
.prose ul.plain li::before{content:"";position:absolute;left:0;top:17px;width:8px;height:2px;background:var(--accent)}
.prose .thanks{margin-top:48px;padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-2);font-size:15px;color:var(--text-2)}

.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:48px}
.stats div{padding:20px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-2)}
.stats b{display:block;font-weight:600;font-size:26px;color:var(--accent);letter-spacing:-.02em}
.stats span{font-size:13px;color:var(--text-3)}

.parts{list-style:none;display:grid;gap:12px;margin-bottom:8px}
.parts li{padding:22px 24px;border:1px solid var(--line);border-radius:var(--radius-sm);background:var(--bg-2)}
.parts h3{font-size:17px;font-weight:600;margin-bottom:6px}
.parts p{font-size:16px;color:#d4d7dc;margin:0}
.parts p.en{font-size:14px;color:var(--text-3);margin-top:4px}

/* ---------- gallery + lightbox ---------- */
.gallery{padding:72px 0 104px;border-top:1px solid var(--line);background:var(--bg-2)}
.gallery h2{font-size:26px;font-weight:600;margin-bottom:28px;letter-spacing:-.02em}
.gallery h2 span{font-size:14px;font-weight:500;color:var(--accent);margin-left:12px}
.grid-photos{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.grid-photos a{display:block;aspect-ratio:4/3;overflow:hidden;background:var(--bg-3);border-radius:var(--radius-sm)}
.grid-photos img{width:100%;height:100%;object-fit:cover;transition:transform .5s,opacity .2s}
.grid-photos a:hover img{transform:scale(1.05)}
.lb{position:fixed;inset:0;background:rgba(5,5,6,.96);z-index:100;display:none;align-items:center;justify-content:center}
.lb.open{display:flex}
.lb img{max-width:92vw;max-height:86vh;object-fit:contain;border-radius:8px}
.lb button{position:absolute;background:none;border:0;color:#fff;font:inherit;font-size:15px;cursor:pointer;padding:12px 16px;opacity:.75}
.lb button:hover{opacity:1;color:var(--accent)}
.lb .x{top:12px;right:12px}
.lb .prev{left:8px;top:50%;transform:translateY(-50%);font-size:36px}
.lb .next{right:8px;top:50%;transform:translateY(-50%);font-size:36px}
.lb .count{position:absolute;bottom:16px;left:0;right:0;text-align:center;color:var(--text-3);font-size:13px}

.next-up{padding:40px 0;border-top:1px solid var(--line);font-size:15px}
.next-up a{text-decoration:none;color:var(--text-2);transition:color .2s}
.next-up a:hover{color:var(--accent)}

/* Brand + all ten menu items need ~1100px; below that switch to the hamburger rather than shrinking text. */
@media(max-width:1200px){
  .nav{display:none}.menu-btn{display:block}
}
@media(min-width:1201px){.mnav,.mnav.open{display:none}}
@media(max-width:960px){
  .work{grid-template-columns:1fr 1fr}
  .art-grid{grid-template-columns:1fr;gap:32px}
  .side ul{display:flex;flex-wrap:wrap;gap:8px}
  .side li{border:1px solid var(--line-2);border-radius:999px;padding:4px 12px}
  .grid-photos{grid-template-columns:repeat(3,1fr)}
}
@media(max-width:640px){
  .wrap{padding:0 16px}
  .hd{height:72px;gap:16px}
  .hd .brand{gap:12px}
  .hd .brand img{height:44px}
  .brand-name{font-size:14px;padding-left:12px}
  .mnav{max-height:calc(100vh - 72px)}
  .mnav{padding:8px 16px 16px}
  .ft{padding:24px 16px}
  .work{grid-template-columns:1fr}
  .stats{grid-template-columns:1fr 1fr}
  .grid-photos{grid-template-columns:1fr 1fr}
  .page-head{padding:56px 0 36px}
  .art-head{padding:52px 0 32px}
  .art-head .lede{font-size:17px}
}
@media(max-width:360px){
  .hd .brand img{height:38px}
  .brand-name{font-size:13px;padding-left:10px}
}