/* Layout: dark charcoal "site office" bands frame a light marble-ivory body; gold used only for actions and the brand line. */
:root{
  --bg:#F4F2EE; --surface:#FFFFFF; --ink:#17191E; --muted:#5D5A54; --line:#DCD6CB;
  --gold:#9A7128; --gold-hi:#D6B062; --band:#16181C; --band-2:#202329; --onband:#EFEBE3; --onband-muted:#ADA79C;
  --f-display:"Bai Jamjuree","Sarabun",system-ui,sans-serif;
  --f-body:"Sarabun",system-ui,-apple-system,"Segoe UI",sans-serif;
  --r:6px; --wrap:1180px;
}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){
  --bg:#121317; --surface:#1A1C21; --ink:#ECE8E0; --muted:#A49F95; --line:#2D3036;
  --gold:#D6B062; --gold-hi:#E6C681; --band:#0C0D10; --band-2:#17191E; --onband:#EFEBE3; --onband-muted:#A49F95; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#121317; --surface:#1A1C21; --ink:#ECE8E0; --muted:#A49F95; --line:#2D3036;
  --gold:#D6B062; --gold-hi:#E6C681; --band:#0C0D10; --band-2:#17191E; --onband:#EFEBE3; --onband-muted:#A49F95; color-scheme:dark}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.7 var(--f-body);-webkit-font-smoothing:antialiased;padding-bottom:64px}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);line-height:1.25;text-wrap:balance;margin:0}
h1{font-size:clamp(34px,5.2vw,58px);font-weight:700}
h2{font-size:clamp(26px,3.4vw,38px);font-weight:700}
h3{font-size:19px;font-weight:600}
p{margin:0}
.num{font-variant-numeric:tabular-nums;letter-spacing:.02em}
.gold{color:var(--gold-hi)}
.wrap{max-width:var(--wrap);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px}

/* header */
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:30;background:var(--band)}
.top{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--band);color:var(--onband);border-bottom:1px solid #ffffff14}
.top-in{display:flex;align-items:center;gap:24px;padding-block:10px}
.brand .logo{height:52px;width:auto}
.nav{display:flex;gap:22px;margin-left:auto;font-family:var(--f-display);font-weight:500;font-size:16px}
.nav a{text-decoration:none;color:var(--onband-muted)}
.nav a:hover{color:var(--onband)}
.btn{display:inline-flex;align-items:center;gap:8px;justify-content:center;font:600 16px/1 var(--f-display);text-decoration:none;padding:15px 22px;border-radius:var(--r);border:1px solid transparent;cursor:pointer;transition:background .2s,color .2s,border-color .2s}
.btn small{font:400 13px var(--f-body);opacity:.75}
.btn-gold{background:var(--gold-hi);color:#17191E}
.btn-gold:hover{background:#E8CB8A}
.btn-ghost{background:transparent;color:var(--onband);border-color:#ffffff40}
.btn-ghost:hover{border-color:var(--gold-hi);color:var(--gold-hi)}
.top-call{padding:11px 16px;font-size:15px}
@media (max-width:860px){.nav{display:none}.top-call{margin-left:auto}.brand .logo{height:44px}}
@media (max-width:420px){.top-call{display:none}}

/* bands */
.band{background:var(--band);color:var(--onband)}
.band .lead{color:var(--onband-muted)}
.hero-in{display:grid;grid-template-columns:1fr 1.05fr;gap:48px;align-items:center;padding-block:56px 64px}
.hero-copy{display:flex;flex-direction:column;gap:20px;min-width:0}
.eyebrow{font:500 14px var(--f-display);letter-spacing:.06em;color:var(--gold-hi)}
.lead{font-size:18px;color:var(--muted);max-width:56ch}
.cta-row,.contact-row{display:flex;flex-wrap:wrap;gap:12px}
.hero-ba{margin:0;min-width:0}
.hero-ba figcaption{margin-top:10px;font-size:14px;color:var(--onband-muted)}
.hero-ba figcaption a{color:var(--onband)}
@media (max-width:900px){.hero-in{grid-template-columns:1fr;gap:32px;padding-block:36px 44px}}

/* before / after */
.ba{position:relative;aspect-ratio:4/3;max-width:100%;overflow:hidden;border-radius:var(--r);background:var(--band-2);user-select:none;touch-action:pan-y}
.ba img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.ba-before{position:absolute;inset:0;clip-path:inset(0 calc(100% - var(--pos)) 0 0)}
.ba-handle{position:absolute;top:0;bottom:0;left:var(--pos);width:2px;margin-left:-1px;background:var(--gold-hi);pointer-events:none}
.ba-handle span{position:absolute;top:50%;left:50%;width:44px;height:44px;margin:-22px 0 0 -22px;border-radius:50%;background:var(--gold-hi);box-shadow:0 2px 10px #0006}
.ba-handle span::before,.ba-handle span::after{content:"";position:absolute;top:16px;border:6px solid transparent}
.ba-handle span::before{left:6px;border-right-color:#17191E}
.ba-handle span::after{right:6px;border-left-color:#17191E}
.ba-range{position:absolute;inset:0;width:100%;height:100%;opacity:0;cursor:ew-resize;margin:0}
.ba-tag{position:absolute;top:12px;font:600 13px var(--f-display);letter-spacing:.05em;padding:5px 10px;border-radius:4px;background:#000000a6;color:#fff;pointer-events:none}
.ba-tag-b{left:12px}.ba-tag-a{right:12px}

/* facts strip */
.facts{background:var(--surface);border-bottom:1px solid var(--line)}
.facts-in{display:grid;grid-template-columns:repeat(4,1fr);padding-block:22px}
.fact{display:flex;flex-direction:column;gap:2px;padding:6px 18px;border-left:1px solid var(--line);min-width:0}
.fact:first-child{border-left:0;padding-left:0}
.fact b{font:600 17px var(--f-display)}
.fact span{font-size:15px;color:var(--muted)}
@media (max-width:860px){.facts-in{grid-template-columns:1fr 1fr;row-gap:14px}.fact:nth-child(3){border-left:0;padding-left:0}}
@media (max-width:440px){.facts-in{grid-template-columns:1fr}.fact{border-left:0;padding-left:0}}

/* sections */
.sec{padding-block:72px}
.sec-alt{background:var(--surface);border-block:1px solid var(--line)}
.sec-head{display:flex;flex-direction:column;gap:10px;margin-bottom:28px;max-width:62ch}
.sec-head p{color:var(--muted)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px}
.chip{font:500 15px var(--f-display);padding:9px 16px;border-radius:999px;border:1px solid var(--line);background:var(--surface);color:var(--ink);cursor:pointer}
.chip[aria-pressed="true"]{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:28px 22px}
.card{display:flex;flex-direction:column;gap:6px;text-decoration:none;min-width:0}
.card-img{display:block;aspect-ratio:4/3;overflow:hidden;border-radius:var(--r);background:var(--line);margin-bottom:6px}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.card:hover .card-img img{transform:scale(1.04)}
.card-cat{font:600 12.5px var(--f-display);letter-spacing:.08em;color:var(--gold)}
.card-t{font:600 19px/1.35 var(--f-display)}
.card-s{font-size:15px;color:var(--muted)}
.card[hidden]{display:none}

.svcs{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;background:var(--line);border:1px solid var(--line)}
.svc{background:var(--surface);padding:24px 22px;display:flex;flex-direction:column;gap:8px;min-width:0}
.svc p{font-size:15.5px;color:var(--muted)}
@media (max-width:980px){.svcs{grid-template-columns:1fr 1fr}}
@media (max-width:520px){.svcs{grid-template-columns:1fr}}

.why{display:grid;grid-template-columns:1.1fr 1fr;gap:48px;align-items:start}
.why-copy{display:flex;flex-direction:column;gap:18px;min-width:0}
.why-copy>p{color:var(--muted);max-width:60ch}
.steps{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:16px}
.step{display:grid;grid-template-columns:40px 1fr;gap:14px;align-items:start}
.step-n{width:40px;height:40px;border-radius:50%;border:1.5px solid var(--gold);color:var(--gold);display:grid;place-items:center;font:700 17px var(--f-display);font-variant-numeric:tabular-nums}
.step p{font-size:15.5px;color:var(--muted)}
.team{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.team img{width:100%;aspect-ratio:1;object-fit:cover;border-radius:var(--r)}
.team img:first-child{grid-column:span 2;aspect-ratio:16/10;object-position:50% 25%}
@media (max-width:900px){.why{grid-template-columns:1fr}}

.contact{display:flex;flex-direction:column;gap:18px;align-items:flex-start}

/* project page */
.back{display:inline-block;margin-bottom:18px;color:var(--muted);text-decoration:none;font:500 15px var(--f-display)}
.back:hover{color:var(--gold)}
.pj{padding-top:36px}
.pj-head{display:flex;flex-direction:column;gap:12px;max-width:68ch;margin-bottom:26px}
.pj-head h1{font-size:clamp(28px,4vw,44px)}
.pj-top{max-width:980px}
.pj-hero{width:100%;max-height:72vh;object-fit:cover;border-radius:var(--r)}
.pj-h2{font-size:24px;margin:48px 0 18px}
.gal{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:10px}
.g{padding:0;border:0;background:var(--line);border-radius:var(--r);overflow:hidden;cursor:zoom-in;aspect-ratio:1}
.g img{width:100%;height:100%;object-fit:cover}
.pj-cta{margin-top:48px;border-radius:var(--r);padding:28px max(22px,3vw);display:flex;flex-wrap:wrap;gap:20px;align-items:center;justify-content:space-between}
.pj-cta h2{font-size:26px}
.pj-cta p{color:var(--onband-muted)}
.lb{border:0;padding:0;background:transparent;max-width:min(96vw,1280px);max-height:92vh}
.lb::backdrop{background:#000000d9}
.lb img{max-height:88vh;width:auto;margin:auto;border-radius:4px}
.lb-x{position:fixed;top:calc(12px + env(safe-area-inset-top,0px));right:calc(14px + env(safe-area-inset-right,0px));width:44px;height:44px;border-radius:50%;border:0;background:#fff;color:#111;font-size:26px;cursor:pointer}

/* footer + mobile dock */
.foot{background:var(--band);color:var(--onband-muted);font-size:14.5px}
.foot-in{display:grid;grid-template-columns:1fr 1.4fr;gap:32px;padding-block:40px}
.foot .logo{height:56px;width:auto;margin-bottom:12px}
.foot-co{color:var(--onband)}
.foot-meta{display:flex;flex-direction:column;gap:8px}
@media (max-width:760px){.foot-in{grid-template-columns:1fr}}
.dock{position:fixed;left:0;right:0;bottom:0;z-index:25;display:none;gap:1px;background:#ffffff1f;padding-bottom:env(safe-area-inset-bottom,0px)}
.dock-btn{flex:1;font:600 16px var(--f-display);padding:16px 10px;text-align:center;text-decoration:none;border:0;background:var(--band);color:var(--onband);cursor:pointer}
.dock-btn:first-child{background:var(--gold-hi);color:#17191E}
@media (max-width:760px){.dock{display:flex}}
@media (min-width:761px){body{padding-bottom:0}}
.toast{position:fixed;left:50%;bottom:calc(84px + env(safe-area-inset-bottom,0px));transform:translateX(-50%);background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:6px;font:500 15px var(--f-display);z-index:40}
@media (prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}