/* ═══════════════════════════════════════════════════════
   ARQON ARCHIT DESIGN STUDIO
   Editorial Architecture Design System — φ = 1.618
   ═══════════════════════════════════════════════════════ */

:root{
  /* ── Golden Ratio Scale ── */
  --phi:1.618;
  --t1:.764rem; --t2:.875rem; --t3:1rem;
  --t4:1.236rem; --t5:1.618rem; --t6:2.058rem;
  --t7:2.618rem; --t8:3.618rem; --t9:4.236rem; --t10:6.854rem;

  --sp1:.382rem; --sp2:.618rem; --sp3:1rem; --sp4:1.618rem;
  --sp5:2.618rem; --sp6:4.236rem; --sp7:6.854rem; --sp8:11.09rem;

  /* ── Brand Palette (from ARQON logo) ── */
  --navy:#1b2538;
  --navy-2:#243049;
  --navy-3:#111826;
  --cobalt:#1c3f7c;
  --gold:#c8a765;
  --gold-lt:#e6d3a8;
  --gold-dp:#9c7f45;

  /* ── Neutrals ── */
  --paper:#f7f4ef;
  --paper-2:#ece6dc;
  --stone:#d6cdbe;
  --ink:#161b24;
  --ink-2:#56606f;
  --ink-3:#8b93a0;

  --hair:rgba(200,167,101,.3);
  --hair-d:rgba(255,255,255,.12);

  --wrap:1320px;
  --nar:980px;
  --ease:cubic-bezier(.25,1,.3,1);
  --ease2:cubic-bezier(.65,0,.35,1);
}

*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  font-family:'IBM Plex Sans Thai',system-ui,sans-serif;
  background:var(--paper);
  color:var(--ink-2);
  font-size:var(--t3);
  font-weight:300;
  line-height:1.75;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{
  font-family:'IBM Plex Sans Thai',sans-serif;
  color:var(--ink);font-weight:500;line-height:1.24;letter-spacing:-.01em;
}
.en,.wordmark{font-family:'Cinzel',serif;letter-spacing:.2em}
.serif{font-family:'Playfair Display',serif;font-weight:400}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%;height:auto;backface-visibility:hidden}
button,input,select,textarea{font:inherit}
button{border:0;background:none;cursor:pointer;color:inherit}
ul{list-style:none}

.wrap{max-width:var(--wrap);margin:0 auto;padding:0 var(--sp4)}
.narrow{max-width:var(--nar);margin:0 auto;padding:0 var(--sp4)}
.tc{text-align:center}

/* ══ REVEAL ══ */
.rv{opacity:0;transform:translateY(34px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv.on{opacity:1;transform:none}
.rv-c{clip-path:inset(0 0 100% 0);transition:clip-path 1.3s var(--ease)}
.rv-c.on{clip-path:inset(0 0 0 0)}
.rv-l{opacity:0;transform:translateX(-34px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv-l.on{opacity:1;transform:none}
.rv-r{opacity:0;transform:translateX(34px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.rv-r.on{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .rv,.rv-c,.rv-l,.rv-r{opacity:1;transform:none;clip-path:none;transition:none}
}

/* ══ UTILITY BAR ══ */
.util{
  background:var(--navy-3);color:rgba(255,255,255,.6);
  font-size:var(--t1);letter-spacing:.06em;
  border-bottom:1px solid rgba(255,255,255,.07);
  position:relative;z-index:60;
}
.util-in{
  max-width:var(--wrap);margin:0 auto;padding:.55rem var(--sp4);
  display:flex;justify-content:space-between;align-items:center;gap:var(--sp3);
}
.util a{transition:color .3s}
.util a:hover{color:var(--gold-lt)}
.util-l{display:flex;gap:var(--sp4);align-items:center}
.util-r{display:flex;gap:var(--sp3);align-items:center}
.util .dot{width:4px;height:4px;background:var(--gold);border-radius:50%;flex:0 0 4px}

/* ══ HEADER ══ */
.hdr{
  position:sticky;top:0;z-index:100;
  background:rgba(27,37,56,.97);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--hair-d);
  transition:padding .45s var(--ease),background .45s;
}
.hdr.min{padding:0}
.hdr-in{
  max-width:var(--wrap);margin:0 auto;padding:var(--sp3) var(--sp4);
  display:flex;align-items:center;justify-content:space-between;gap:var(--sp4);
  transition:padding .45s var(--ease);
}
.hdr.min .hdr-in{padding:.5rem var(--sp4)}
.brand{display:flex;align-items:center;gap:.75rem;flex:0 0 auto}
.brand img{width:46px;height:46px;object-fit:contain;transition:width .45s var(--ease),height .45s var(--ease)}
.hdr.min .brand img{width:36px;height:36px}
.brand-tx b{
  display:block;font-family:'Cinzel',serif;font-size:1.32rem;
  letter-spacing:.34em;color:#fff;font-weight:600;line-height:1;
}
.brand-tx span{
  display:block;font-size:.5rem;letter-spacing:.26em;text-transform:uppercase;
  color:var(--gold);margin-top:.3rem;
}
.nav{display:flex;align-items:center;gap:var(--sp5)}
.nav>a{
  position:relative;font-size:.88rem;color:rgba(255,255,255,.78);
  letter-spacing:.03em;padding:.4rem 0;transition:color .35s;
}
.nav>a::after{
  content:'';position:absolute;left:0;bottom:0;width:0;height:1px;
  background:var(--gold);transition:width .4s var(--ease);
}
.nav>a:hover,.nav>a.cur{color:#fff}
.nav>a:hover::after,.nav>a.cur::after{width:100%}

/* Buttons */
.bt{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.92rem 1.9rem;font-size:.85rem;letter-spacing:.08em;
  border:1px solid var(--gold);background:var(--gold);color:var(--navy);
  position:relative;overflow:hidden;z-index:0;
  transition:color .45s var(--ease),transform .35s var(--ease),box-shadow .4s;
}
.bt::before{
  content:'';position:absolute;inset:0;background:var(--navy);z-index:-1;
  transform:translateY(101%);transition:transform .45s var(--ease);
}
.bt:hover{color:var(--gold-lt);transform:translateY(-2px);box-shadow:0 12px 30px rgba(27,37,56,.3)}
.bt:hover::before{transform:translateY(0)}
.bt.out{background:transparent;color:var(--gold-lt);border-color:rgba(200,167,101,.55)}
.bt.out::before{background:var(--gold)}
.bt.out:hover{color:var(--navy);border-color:var(--gold)}
.bt.dark{background:var(--navy);color:var(--gold-lt);border-color:var(--navy)}
.bt.dark::before{background:var(--gold)}
.bt.dark:hover{color:var(--navy);border-color:var(--gold)}
.bt.sm{padding:.7rem 1.4rem;font-size:.78rem}

.burg{display:none;flex-direction:column;gap:6px;padding:9px;z-index:120}
.burg i{display:block;width:26px;height:1.6px;background:#fff;transition:.4s var(--ease)}
.burg.x i:nth-child(1){transform:translateY(7.6px) rotate(45deg)}
.burg.x i:nth-child(2){opacity:0}
.burg.x i:nth-child(3){transform:translateY(-7.6px) rotate(-45deg)}

/* ══ HERO (index) ══ */
.hero{position:relative;background:var(--navy);overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr 1.618fr;min-height:calc(100svh - 96px)}
.hero-copy{
  padding:var(--sp7) var(--sp5) var(--sp7) 0;
  display:flex;flex-direction:column;justify-content:center;
  position:relative;z-index:3;
}
.hero-copy-in{max-width:30rem;margin-left:auto;padding-left:var(--sp4)}
.eyeb{
  display:flex;align-items:center;gap:.9rem;
  font-size:.64rem;letter-spacing:.4em;text-transform:uppercase;
  color:var(--gold);margin-bottom:var(--sp4);
}
.eyeb::before{content:'';width:2.6rem;height:1px;background:var(--gold);flex:0 0 2.6rem}
.hero h1{
  font-size:clamp(1.9rem,3.6vw,var(--t8));
  color:#fff;font-weight:400;line-height:1.26;letter-spacing:-.015em;
}
.hero h1 b{color:var(--gold-lt);font-weight:500;display:block}
.hero p{
  margin-top:var(--sp4);color:rgba(255,255,255,.72);
  font-size:.97rem;font-weight:200;max-width:30ch;
}
.hero-acts{display:flex;flex-wrap:wrap;gap:var(--sp3);margin-top:var(--sp5)}
.hero-tags{
  display:flex;flex-wrap:wrap;gap:.5rem;margin-top:var(--sp5);
  padding-top:var(--sp4);border-top:1px solid var(--hair-d);
}
.hero-tags span{
  font-size:.72rem;letter-spacing:.06em;color:rgba(255,255,255,.55);
  border:1px solid var(--hair-d);padding:.35rem .85rem;border-radius:999px;
}
.hero-media{position:relative;overflow:hidden;background:var(--navy-3)}
.hslide{position:absolute;inset:0;opacity:0;transition:opacity 1.5s var(--ease)}
.hslide.on{opacity:1}
.hslide img{width:100%;height:100%;object-fit:cover;transform:scale(1.05);transition:transform 9s linear}
.hslide.on img{transform:scale(1.13)}
.hero-media::after{
  content:'';position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,rgba(27,37,56,.85),rgba(27,37,56,.1) 32%,transparent 60%);
}
.hero-nav{position:absolute;right:var(--sp4);bottom:var(--sp4);z-index:4;display:flex;gap:.5rem}
.hero-nav button{
  width:38px;height:2px;background:rgba(255,255,255,.3);transition:.5s var(--ease);
}
.hero-nav button.on{background:var(--gold);width:58px}
.hero-cnt{
  position:absolute;left:var(--sp4);bottom:var(--sp4);z-index:4;
  font-family:'Playfair Display',serif;color:rgba(255,255,255,.5);
  font-size:.9rem;letter-spacing:.2em;
}
.hero-cnt b{color:var(--gold-lt);font-size:1.5rem}

/* ══ PAGE HEADER (inner pages) ══ */
.phead{position:relative;height:46vh;min-height:330px;overflow:hidden;background:var(--navy)}
.phead img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.5}
.phead::after{
  content:'';position:absolute;inset:0;
  background:linear-gradient(to top,rgba(17,24,38,.95),rgba(17,24,38,.35) 60%,rgba(17,24,38,.6));
}
.phead-in{
  position:relative;z-index:3;height:100%;max-width:var(--wrap);
  margin:0 auto;padding:0 var(--sp4) var(--sp6);
  display:flex;flex-direction:column;justify-content:flex-end;
}
.phead h1{font-size:clamp(1.9rem,4.4vw,var(--t8));color:#fff;font-weight:400}
.crumb{display:flex;gap:.6rem;align-items:center;font-size:.76rem;color:rgba(255,255,255,.5);margin-top:var(--sp3)}
.crumb a:hover{color:var(--gold-lt)}
.crumb i{color:var(--gold);font-style:normal}

/* ══ SECTION ══ */
.sec{padding:var(--sp7) 0}
.sec-sm{padding:var(--sp6) 0}
.sec-dark{background:var(--navy);color:rgba(255,255,255,.7)}
.sec-dark h2,.sec-dark h3{color:#fff}
.sec-paper{background:var(--paper-2)}

.shd{max-width:46rem;margin-bottom:var(--sp6)}
.shd.mid{margin-left:auto;margin-right:auto;text-align:center}
.shd .k{
  font-size:.64rem;letter-spacing:.38em;text-transform:uppercase;
  color:var(--gold-dp);margin-bottom:var(--sp3);
  display:flex;align-items:center;gap:.8rem;
}
.shd.mid .k{justify-content:center}
.shd .k::before{content:'';width:2rem;height:1px;background:var(--gold)}
.shd.mid .k::after{content:'';width:2rem;height:1px;background:var(--gold)}
.sec-dark .shd .k{color:var(--gold)}
.shd h2{font-size:clamp(1.65rem,3.2vw,var(--t7));font-weight:400;letter-spacing:-.015em}
.shd p{margin-top:var(--sp3);font-weight:200;font-size:1rem}
.sec-dark .shd p{color:rgba(255,255,255,.62)}

/* ══ MOSAIC INTRO (index about) ══ */
.mosaic-split{display:grid;grid-template-columns:1.618fr 1fr;gap:var(--sp5);align-items:center}
.mos{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:auto auto;gap:var(--sp3)}
.mos figure{position:relative;overflow:hidden;background:var(--navy-3)}
.mos figure img{width:100%;height:100%;object-fit:cover;transition:transform 1.3s var(--ease)}
.mos figure:hover img{transform:scale(1.07)}
.mos .m1{grid-row:span 2}
.mos .m1 img{position:absolute;inset:0}
.mos .m2{aspect-ratio:var(--phi)/1}
.mos .m3{aspect-ratio:var(--phi)/1}
.mos-badge{
  position:absolute;left:0;bottom:0;background:var(--navy);
  color:var(--gold-lt);font-size:.68rem;letter-spacing:.16em;
  padding:.6rem 1rem;border-right:2px solid var(--gold);
}

/* ══ SERVICE STRIPS ══ */
.strip{
  display:grid;grid-template-columns:1fr 1.618fr;
  background:#fff;border:1px solid var(--hair);
  overflow:hidden;margin-bottom:var(--sp4);
  transition:box-shadow .6s var(--ease),transform .6s var(--ease);
}
.strip:hover{box-shadow:0 30px 70px rgba(27,37,56,.12);transform:translateY(-5px)}
.strip:nth-child(even){grid-template-columns:1.618fr 1fr}
.strip:nth-child(even) .strip-tx{order:2}
.strip:nth-child(even) .strip-img{order:1}
.strip-tx{padding:var(--sp5);display:flex;flex-direction:column;justify-content:center;gap:var(--sp2)}
.strip-n{
  font-family:'Playfair Display',serif;font-size:2.4rem;
  color:var(--stone);line-height:1;transition:color .5s;
}
.strip:hover .strip-n{color:var(--gold)}
.strip-tx h3{font-size:var(--t6);color:var(--cobalt);font-weight:600;letter-spacing:-.02em}
.strip-tx p{font-size:.95rem;font-weight:300;color:var(--ink-2)}
.strip-tx .more{
  margin-top:var(--sp3);font-size:.8rem;letter-spacing:.14em;color:var(--gold-dp);
  display:inline-flex;align-items:center;gap:.5rem;transition:gap .4s var(--ease);
}
.strip:hover .strip-tx .more{gap:1rem}
.strip-img{position:relative;overflow:hidden;background:var(--paper-2);min-height:270px}
.strip-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease)}
.strip:hover .strip-img img{transform:scale(1.06)}

/* ══ STAT BAND ══ */
.band{position:relative;overflow:hidden;background:var(--navy-3)}
.band>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.26}
.band::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,rgba(17,24,38,.9),rgba(17,24,38,.55))}
.band-in{position:relative;z-index:3;padding:var(--sp6) 0}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp4)}
.st{padding-left:var(--sp4);border-left:1px solid rgba(200,167,101,.35)}
.st b{
  display:block;font-family:'Playfair Display',serif;font-size:var(--t7);
  color:var(--gold-lt);font-weight:400;line-height:1;
}
.st span{display:block;font-size:.8rem;color:rgba(255,255,255,.6);margin-top:.4rem;letter-spacing:.05em}

/* ══ PROJECT GRID ══ */
.filters{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:var(--sp5)}
.filters.mid{justify-content:center}
.filters button{
  padding:.6rem 1.45rem;border:1px solid var(--hair);
  font-size:.82rem;letter-spacing:.05em;color:var(--ink-2);
  background:#fff;transition:.4s var(--ease);
}
.filters button:hover{border-color:var(--gold);color:var(--gold-dp)}
.filters button.on{background:var(--navy);border-color:var(--navy);color:var(--gold-lt)}
.sec-dark .filters button{background:transparent;color:rgba(255,255,255,.65);border-color:var(--hair-d)}
.sec-dark .filters button.on{background:var(--gold);border-color:var(--gold);color:var(--navy)}

.grid-p{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp3)}
.grid-p.feat .pj:nth-child(1){grid-column:span 2;grid-row:span 2}
.pj{
  position:relative;overflow:hidden;background:var(--navy-3);
  cursor:pointer;aspect-ratio:1/1.1;
  animation:pin .6s var(--ease) both;
}
.grid-p.feat .pj:nth-child(1){aspect-ratio:auto}
@keyframes pin{from{opacity:0;transform:scale(.97) translateY(16px)}to{opacity:1;transform:none}}
.pj.hide{display:none}
.pj img{width:100%;height:100%;object-fit:cover;transition:transform 1.4s var(--ease),filter .8s}
.pj:hover img{transform:scale(1.08);filter:brightness(.55)}
.pj-ov{
  position:absolute;inset:0;z-index:2;padding:var(--sp4);
  display:flex;flex-direction:column;justify-content:flex-end;
  background:linear-gradient(transparent 40%,rgba(17,24,38,.9));
  opacity:0;transition:opacity .55s var(--ease);
}
.pj:hover .pj-ov{opacity:1}
.pj-ov h3{color:#fff;font-size:1.25rem;font-weight:500;transform:translateY(12px);transition:transform .55s var(--ease)}
.pj-ov span{color:var(--gold-lt);font-size:.76rem;letter-spacing:.1em;transform:translateY(12px);transition:transform .55s var(--ease) .06s}
.pj:hover .pj-ov h3,.pj:hover .pj-ov span{transform:none}
.pj-cat{
  position:absolute;top:var(--sp3);left:var(--sp3);z-index:3;
  background:rgba(17,24,38,.78);backdrop-filter:blur(6px);
  color:var(--gold-lt);font-size:.62rem;letter-spacing:.18em;
  padding:.34rem .8rem;text-transform:uppercase;
  opacity:0;transform:translateY(-8px);transition:.5s var(--ease);
}
.pj:hover .pj-cat{opacity:1;transform:none}
.pj-zoom{
  position:absolute;top:50%;left:50%;z-index:3;
  width:52px;height:52px;border:1px solid var(--gold);border-radius:50%;
  display:grid;place-items:center;color:var(--gold-lt);font-size:1.1rem;
  transform:translate(-50%,-50%) scale(.6);opacity:0;
  transition:.55s var(--ease);
}
.pj:hover .pj-zoom{opacity:1;transform:translate(-50%,-50%) scale(1)}

/* Empty slot */
.pj.empty{
  background:repeating-linear-gradient(45deg,var(--paper-2),var(--paper-2) 12px,#e3dccf 12px,#e3dccf 24px);
  display:grid;place-items:center;cursor:default;
}
.pj.empty span{
  font-size:.78rem;color:var(--ink-3);letter-spacing:.12em;
  border:1px dashed var(--ink-3);padding:.6rem 1.1rem;background:rgba(255,255,255,.6);
}

/* ══ PROCESS ══ */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--sp3)}
.stp{background:#fff;border:1px solid var(--hair);overflow:hidden;transition:transform .55s var(--ease),box-shadow .55s}
.stp:hover{transform:translateY(-8px);box-shadow:0 26px 56px rgba(27,37,56,.12)}
.stp-img{aspect-ratio:var(--phi)/1;overflow:hidden;background:var(--paper-2);position:relative}
.stp-img img{width:100%;height:100%;object-fit:cover;transition:transform 1.3s var(--ease)}
.stp:hover .stp-img img{transform:scale(1.07)}
.stp-num{
  position:absolute;left:0;bottom:0;background:var(--gold);color:var(--navy);
  font-family:'Playfair Display',serif;font-size:1.3rem;
  width:46px;height:46px;display:grid;place-items:center;
}
.stp-tx{padding:var(--sp4)}
.stp-tx h3{font-size:1.18rem;margin-bottom:.5rem}
.stp-tx p{font-size:.87rem;font-weight:300;color:var(--ink-3)}

/* ══ CTA BAND ══ */
.cta{position:relative;overflow:hidden;background:var(--navy)}
.cta>img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.3}
.cta::after{content:'';position:absolute;inset:0;background:linear-gradient(to right,rgba(17,24,38,.92),rgba(17,24,38,.45))}
.cta-in{position:relative;z-index:3;padding:var(--sp7) 0;max-width:40rem}
.cta-in h2{color:#fff;font-size:clamp(1.6rem,3.2vw,var(--t7));font-weight:400}
.cta-in p{color:rgba(255,255,255,.72);margin-top:var(--sp3);font-weight:200}
.cta-acts{display:flex;flex-wrap:wrap;gap:var(--sp3);margin-top:var(--sp5)}

/* ══ TESTIMONIAL ══ */
.tms{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--sp3)}
.tm{
  background:#fff;border:1px solid var(--hair);padding:var(--sp5) var(--sp4) var(--sp4);
  position:relative;display:flex;flex-direction:column;
  transition:transform .5s var(--ease),box-shadow .5s;
}
.tm:hover{transform:translateY(-7px);box-shadow:0 26px 54px rgba(27,37,56,.1)}
.tm::before{
  content:'"';position:absolute;top:.2rem;right:1.2rem;
  font-family:'Playfair Display',serif;font-size:5rem;color:var(--gold);opacity:.2;line-height:1;
}
.tm .star{color:var(--gold);letter-spacing:.2em;font-size:.82rem;margin-bottom:var(--sp3)}
.tm p{font-size:.93rem;font-weight:300;flex:1;position:relative;z-index:1}
.tm-who{display:flex;align-items:center;gap:.85rem;margin-top:var(--sp4);padding-top:var(--sp3);border-top:1px solid var(--hair)}
.tm-av{
  width:44px;height:44px;flex:0 0 44px;border-radius:50%;background:var(--navy);
  color:var(--gold-lt);display:grid;place-items:center;font-size:1.05rem;
}
.tm-who b{display:block;font-size:.9rem;color:var(--ink);font-weight:500}
.tm-who small{font-size:.74rem;color:var(--ink-3)}

/* ══ CONTACT ══ */
.cgrid{display:grid;grid-template-columns:1fr 1.618fr;gap:var(--sp5);align-items:start}
.cbox{background:#fff;border:1px solid var(--hair);padding:var(--sp5)}
.sec-dark .cbox{background:rgba(255,255,255,.04);border-color:var(--hair-d)}
.cline{display:flex;gap:var(--sp3);align-items:flex-start;padding:var(--sp3) 0;border-bottom:1px solid var(--hair)}
.cline:last-child{border-bottom:0}
.sec-dark .cline{border-color:var(--hair-d)}
.cic{
  width:44px;height:44px;flex:0 0 44px;border:1px solid var(--gold);
  border-radius:50%;display:grid;place-items:center;color:var(--gold-dp);
  transition:.4s var(--ease);
}
.cline:hover .cic{background:var(--gold);color:#fff}
.sec-dark .cic{color:var(--gold)}
.cline b{
  display:block;font-size:.64rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold-dp);margin-bottom:.15rem;font-weight:600;
}
.sec-dark .cline b{color:var(--gold)}
.cline a,.cline span{font-size:.95rem;font-weight:300;transition:color .3s}
.cline a:hover{color:var(--gold-dp)}

.frm{display:grid;grid-template-columns:1fr 1fr;gap:var(--sp3)}
.fl{display:flex;flex-direction:column}
.fl.full{grid-column:1/-1}
.fl label{font-size:.66rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold-dp);margin-bottom:.45rem;font-weight:600}
.fl input,.fl select,.fl textarea{
  font-size:.94rem;font-weight:300;padding:.85rem 1rem;
  border:1px solid var(--hair);background:var(--paper);color:var(--ink);
  transition:border-color .35s,background .35s;width:100%;
}
.fl textarea{resize:vertical;min-height:7rem}
.fl input:focus,.fl select:focus,.fl textarea:focus{outline:0;border-color:var(--gold);background:#fff}
.fnote{grid-column:1/-1;font-size:.76rem;color:var(--ink-3);text-align:center;margin-top:.4rem}

.mapbox{border:1px solid var(--hair);overflow:hidden;min-height:420px;margin-top:var(--sp5)}
.mapbox iframe{width:100%;height:100%;min-height:420px;border:0;display:block}

/* ══ FOOTER ══ */
.ftr{background:var(--navy-3);color:rgba(255,255,255,.5);padding:var(--sp6) 0 var(--sp4)}
.ftr-top{display:grid;grid-template-columns:1.618fr 1fr 1fr 1fr;gap:var(--sp5);padding-bottom:var(--sp5);border-bottom:1px solid var(--hair-d)}
.ftr-b img{width:76px;margin-bottom:var(--sp3)}
.ftr-b b{display:block;font-family:'Cinzel',serif;font-size:1.4rem;letter-spacing:.32em;color:#fff;font-weight:600}
.ftr-b small{display:block;font-size:.52rem;letter-spacing:.26em;text-transform:uppercase;color:var(--gold);margin-top:.3rem}
.ftr-b p{font-size:.86rem;font-weight:200;margin-top:var(--sp3);max-width:32ch}
.ftr-c h4{font-size:.66rem;letter-spacing:.24em;text-transform:uppercase;color:var(--gold);margin-bottom:var(--sp3);font-weight:600}
.ftr-c a,.ftr-c span{display:block;font-size:.88rem;font-weight:200;padding:.28rem 0;transition:color .35s}
.ftr-c a:hover{color:var(--gold-lt)}
.ftr-bot{padding-top:var(--sp4);display:flex;justify-content:space-between;align-items:center;gap:var(--sp3);flex-wrap:wrap;font-size:.76rem}
.soc{display:flex;gap:.6rem}
.soc a{
  width:40px;height:40px;border:1px solid rgba(200,167,101,.3);border-radius:50%;
  display:grid;place-items:center;color:var(--gold);transition:.4s var(--ease);
}
.soc a:hover{background:var(--gold);color:var(--navy);transform:translateY(-3px)}

/* ══ LIGHTBOX ══ */
.lb{position:fixed;inset:0;z-index:300;display:none;background:rgba(14,19,29,.96);backdrop-filter:blur(14px);place-items:center;padding:var(--sp4)}
.lb.open{display:grid;animation:fin .35s ease}
@keyframes fin{from{opacity:0}to{opacity:1}}
.lb figure{max-width:min(94vw,1300px);text-align:center}
.lb img{max-width:100%;max-height:80vh;width:auto;box-shadow:0 40px 90px rgba(0,0,0,.6)}
.lb figcaption{margin-top:var(--sp3);color:#fff;font-size:1.15rem}
.lb figcaption span{display:block;color:var(--gold-lt);font-size:.78rem;letter-spacing:.12em;margin-top:.25rem}
.lbx,.lbp,.lbn{
  position:absolute;width:52px;height:52px;border-radius:50%;
  border:1px solid rgba(200,167,101,.4);background:rgba(255,255,255,.05);
  color:#fff;display:grid;place-items:center;font-size:1.3rem;
  transition:.4s var(--ease);backdrop-filter:blur(6px);
}
.lbx:hover,.lbp:hover,.lbn:hover{background:var(--gold);color:var(--navy);border-color:var(--gold)}
.lbx{top:var(--sp4);right:var(--sp4)}
.lbp{left:var(--sp4);top:50%;transform:translateY(-50%)}
.lbn{right:var(--sp4);top:50%;transform:translateY(-50%)}
.lbc{position:absolute;bottom:var(--sp4);left:50%;transform:translateX(-50%);color:rgba(255,255,255,.5);font-size:.78rem;letter-spacing:.2em}

/* ══ FAB ══ */
.fab{position:fixed;right:1.2rem;bottom:1.2rem;z-index:150;display:flex;flex-direction:column;align-items:flex-end;gap:.55rem}
.fab-l{display:flex;flex-direction:column;gap:.45rem;opacity:0;transform:translateY(14px) scale(.93);pointer-events:none;transition:.45s var(--ease)}
.fab.open .fab-l{opacity:1;transform:none;pointer-events:auto}
.fab-i{
  display:flex;align-items:center;gap:.55rem;height:46px;padding:0 1.1rem;
  border-radius:999px;background:#fff;color:var(--navy);font-size:.82rem;
  white-space:nowrap;box-shadow:0 12px 28px rgba(0,0,0,.2);transition:.35s var(--ease);
}
.fab-i:hover{background:var(--gold);transform:translateX(-3px)}
.fab-m{
  width:56px;height:56px;border-radius:50%;display:grid;place-items:center;
  background:var(--gold);color:var(--navy);font-size:1.25rem;
  box-shadow:0 14px 32px rgba(156,127,69,.45);transition:.4s var(--ease);
}
.fab-m:hover{transform:scale(1.07)}
.fab.open .fab-m{transform:rotate(135deg);background:var(--navy);color:var(--gold)}

/* ══ RESPONSIVE ══ */
@media(max-width:1100px){
  :root{--sp7:5rem}
  .hero-grid{grid-template-columns:1fr;min-height:0}
  .hero-copy{order:2;padding:var(--sp6) 0}
  .hero-copy-in{margin:0 auto;max-width:var(--wrap);padding:0 var(--sp4)}
  .hero-media{order:1;height:58vh;min-height:360px}
  .hero-media::after{background:linear-gradient(to top,rgba(27,37,56,.75),transparent 55%)}
  .mosaic-split,.cgrid{grid-template-columns:1fr}
  .strip,.strip:nth-child(even){grid-template-columns:1fr}
  .strip .strip-tx,.strip .strip-img{order:unset!important}
  .strip-img{min-height:230px;order:-1!important}
  .stats{grid-template-columns:1fr 1fr;gap:var(--sp4)}
  .steps{grid-template-columns:1fr 1fr}
  .tms{grid-template-columns:1fr 1fr}
  .grid-p{grid-template-columns:1fr 1fr}
  .grid-p.feat .pj:nth-child(1){grid-column:span 2;grid-row:auto;aspect-ratio:1.4/1}
  .ftr-top{grid-template-columns:1fr 1fr}
  .ftr-b{grid-column:1/-1}
  .util-l .hide-sm{display:none}
  .hdr{backdrop-filter:none;-webkit-backdrop-filter:none;background:var(--navy)}
  .burg{display:flex}
  .nav{
    visibility:hidden;
    position:fixed;inset:0;padding:6.5rem var(--sp4) var(--sp4);
    background:rgba(17,24,38,.985);backdrop-filter:blur(20px);
    flex-direction:column;align-items:flex-start;justify-content:flex-start;gap:var(--sp4);
    clip-path:circle(0% at calc(100% - 2.4rem) 2.4rem);
    transition:clip-path .7s var(--ease),visibility 0s linear .7s;
  }
  .nav.open{clip-path:circle(150% at calc(100% - 2.4rem) 2.4rem);visibility:visible;transition:clip-path .7s var(--ease),visibility 0s}
  .nav>a{font-size:1.45rem;color:#fff}
  .nav .bt{width:100%;margin-top:var(--sp3);padding:1.05rem}
}
@media(max-width:680px){
  :root{--sp7:3.6rem;--sp6:2.8rem;--sp5:2rem}
  .util-in{font-size:.68rem;padding:.45rem var(--sp3)}
  .util-r{display:none}
  .mos{grid-template-columns:1fr 1fr}
  .mos .m1{grid-row:auto;aspect-ratio:1.2/1;grid-column:span 2}
  .stats,.steps,.tms,.frm,.grid-p{grid-template-columns:1fr}
  .grid-p.feat .pj:nth-child(1){grid-column:auto;aspect-ratio:1/1.1}
  .hero-acts .bt,.cta-acts .bt{flex:1 1 100%}
  .ftr-top{grid-template-columns:1fr}
  .ftr-bot{justify-content:center;text-align:center}
  .lbp,.lbn{width:42px;height:42px}
  .lbp{left:.5rem}.lbn{right:.5rem}
  .phead{height:38vh;min-height:260px}
}

/* ═══════════════════════════════════════════════════════
   FINAL POLISH — accessibility · fixes · production
   ═══════════════════════════════════════════════════════ */

/* Skip link + keyboard focus */
.skip{position:absolute;left:var(--sp3);top:-5rem;z-index:400;background:var(--gold);color:var(--navy);padding:.7rem 1.2rem;font-size:.85rem;transition:top .3s var(--ease)}
.skip:focus{top:var(--sp3)}
:focus-visible{outline:2px solid var(--gold-dp);outline-offset:3px}
.hdr :focus-visible,.hero :focus-visible,.sec-dark :focus-visible,.cta :focus-visible,.ftr :focus-visible,.lb :focus-visible,.fab :focus-visible{outline-color:var(--gold-lt)}
.pj:focus-visible{outline-offset:-4px}
.fl input:focus-visible,.fl select:focus-visible,.fl textarea:focus-visible{outline:0}

/* Anchor offset under sticky header */
section[id]{scroll-margin-top:5.5rem}

/* Hero headline: keep Thai words from splitting awkwardly */
.hero h1{font-size:clamp(1.65rem,2.9vw,2.85rem)}
.nw{white-space:nowrap}
@media(min-width:1101px){.hero-copy{padding-right:var(--sp4)}.hero-copy-in{max-width:34rem}}

/* Header CTA button: no nav underline */
.nav>a.bt::after{display:none}

/* Reveal + hover transitions on the same element (.strip/.stp/.tm) */
.strip.rv,.stp.rv,.tm.rv{transition:opacity 1s var(--ease),transform .7s var(--ease),box-shadow .6s var(--ease)}

/* Missing images degrade quietly */
.pj.dead{display:none}
.is-missing{visibility:hidden}
.brand img.is-missing{display:none}

/* Form helpers */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.fnote{min-height:1.4em}
button:disabled{cursor:default;opacity:.75}
.bt:disabled:hover{transform:none;box-shadow:none}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .hslide img,.hslide.on img{transform:none;transition:none}
  .pj{animation:none}
  .strip,.stp,.tm,.bt{transition:none}
}