/* ============ Luxfilm — ฟิล์มกันความร้อนบ้านและอาคาร ============ */

:root{
  --ink:#05222C;
  --teal-900:#04222C;
  --teal-800:#063040;
  --teal-700:#084459;
  --teal-600:#005574;
  --teal-400:#2E8AAB;
  --gold:#FFC01E;
  --gold-600:#E5A800;
  --cream:#F7F5F1;
  --paper:#FFFFFF;
  --muted:#5D7078;
  --line:rgba(6,48,64,.10);
  --shadow-s:0 1px 3px rgba(4,34,44,.05);
  --shadow-m:0 12px 34px -16px rgba(4,34,44,.16);
  --shadow-l:0 28px 64px -30px rgba(4,34,44,.26);
  --r-s:6px; --r-m:12px; --r-l:16px; --r-xl:22px;
  --pad:clamp(20px,5vw,64px);
  --maxw:1240px;
  --ease:cubic-bezier(.22,.75,.28,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--cream);color:var(--ink);
  font-family:"Noto Sans Thai","Outfit",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  font-size:clamp(15px,.55vw + 13.6px,17px);line-height:1.75;
  font-weight:400;letter-spacing:.005em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img,video{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:600;letter-spacing:-.014em}
p{margin:0}
::selection{background:var(--gold);color:var(--teal-900)}

.wrap{width:min(var(--maxw),100% - var(--pad)*2);margin-inline:auto}
.num{font-family:"Outfit",sans-serif;font-variant-numeric:tabular-nums;letter-spacing:-.02em}

/* ---------- reveal ---------- */
.rv{opacity:0;transform:translateY(26px);transition:opacity .85s var(--ease),transform .85s var(--ease);transition-delay:var(--d,0ms)}
.rv.in{opacity:1;transform:none}
.rv-s{opacity:0;transform:scale(.955);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--d,0ms)}
.rv-s.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .rv,.rv-s{opacity:1!important;transform:none!important;transition:none!important}
  *{animation-duration:.001ms!important;transition-duration:.05ms!important}
}

/* ---------- scroll progress ---------- */
#prog{position:fixed;inset:0 auto auto 0;height:3px;width:0;z-index:120;
  background:linear-gradient(90deg,var(--gold),#FFDD7A);box-shadow:0 0 14px rgba(255,192,30,.6)}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;padding:14px 0;transition:.45s var(--ease)}
.nav::before{content:"";position:absolute;inset:0;background:rgba(4,34,44,.78);
  backdrop-filter:blur(16px) saturate(1.4);-webkit-backdrop-filter:blur(16px) saturate(1.4);
  border-bottom:1px solid rgba(255,255,255,.09);opacity:0;transition:.45s var(--ease)}
.nav.stuck{padding:9px 0}
.nav.stuck::before{opacity:1}
.nav .wrap{display:flex;align-items:center;gap:18px;position:relative}
.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto}
.nav-links{display:flex;gap:4px;margin-left:auto;align-items:center}
.nav-links a{color:rgba(255,255,255,.82);font-size:.88rem;font-weight:400;padding:9px 13px;border-radius:4px;
  position:relative;transition:.28s var(--ease);white-space:nowrap}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.11)}
.nav-cta{background:var(--gold)!important;color:var(--teal-900)!important;font-weight:600!important;
  padding:11px 22px!important;border-radius:4px!important}
.nav-cta:hover{background:#FFD25A!important;transform:translateY(-1px)}
.burger{display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  background:rgba(255,255,255,.12);align-items:center;justify-content:center}
.burger span{display:block;width:19px;height:2px;background:#fff;border-radius:2px;position:relative;transition:.3s var(--ease)}
.burger span::before,.burger span::after{content:"";position:absolute;left:0;width:19px;height:2px;background:#fff;border-radius:2px;transition:.3s var(--ease)}
.burger span::before{top:-6px}.burger span::after{top:6px}
body.menu-open .burger span{background:transparent}
body.menu-open .burger span::before{top:0;transform:rotate(45deg)}
body.menu-open .burger span::after{top:0;transform:rotate(-45deg)}

@media (max-width:900px){
  .burger{display:flex}
  .nav-links{position:fixed;inset:0 0 auto 0;top:0;padding:88px 22px 26px;flex-direction:column;align-items:stretch;gap:2px;
    background:rgba(4,34,44,.97);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
    transform:translateY(-100%);transition:.5s var(--ease);margin:0;
    border-bottom:1px solid rgba(255,255,255,.1);box-shadow:0 24px 60px -20px rgba(0,0,0,.6)}
  body.menu-open .nav-links{transform:none}
  .nav-links a{padding:14px 16px;font-size:1.02rem;border-radius:12px}
  .nav-cta{text-align:center;margin-top:10px}
}

/* ---------- hero ---------- */
.hero{position:relative;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;
  overflow:hidden;background:#031015;isolation:isolate}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 56%;
  animation:kb 34s ease-in-out infinite alternate;will-change:transform}
@keyframes kb{from{transform:scale(1.05)}to{transform:scale(1.14) translate3d(-1.2%,-.8%,0)}}
.hero-media::after{content:"";position:absolute;inset:0;
  background:
    linear-gradient(101deg,rgba(3,16,21,.94) 0%,rgba(3,16,21,.80) 30%,rgba(3,16,21,.34) 58%,rgba(3,16,21,.06) 80%),
    linear-gradient(180deg,rgba(3,16,21,.60) 0%,rgba(3,16,21,.10) 26%,rgba(3,16,21,.58) 74%,rgba(3,16,21,.96) 100%)}
.grain{position:absolute;inset:0;z-index:-1;pointer-events:none;opacity:.055;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E")}

.hero-inner{flex:1;display:flex;align-items:flex-end;padding:clamp(108px,14vh,146px) 0 clamp(26px,5vh,54px);width:100%}
.hero-lead{max-width:44rem}

.eyebrow{display:inline-flex;align-items:center;gap:15px;color:rgba(255,255,255,.74);
  font-size:.79rem;font-weight:500;letter-spacing:.1em}
.eyebrow::before{content:"";width:38px;height:1px;background:var(--gold);flex:0 0 auto}

.hero h1{color:#fff;font-size:clamp(2.05rem,5.4vw,4.05rem);font-weight:600;line-height:1.19;
  letter-spacing:-.03em;margin-top:24px;text-shadow:0 2px 34px rgba(0,0,0,.42)}
.hero h1 em{font-style:normal;font-weight:600;color:var(--gold)}

.rule{display:block;width:72px;height:1px;margin:clamp(24px,3vw,34px) 0 0;
  background:linear-gradient(90deg,var(--gold),rgba(255,192,30,0));
  transform:scaleX(0);transform-origin:left;
  transition:transform 1s var(--ease) .25s,opacity .6s var(--ease)}
.rule.in{transform:scaleX(1)}

.hero-sub{color:rgba(255,255,255,.76);font-size:clamp(.99rem,1.2vw,1.08rem);font-weight:300;
  max-width:50ch;margin-top:clamp(20px,2.4vw,27px);line-height:1.82}
.hero-cta{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;margin-top:clamp(26px,3.2vw,38px)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:15px 28px;border-radius:4px;
  font-weight:600;font-size:.95rem;letter-spacing:.005em;transition:.4s var(--ease);position:relative;
  will-change:transform}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn-gold{background:var(--gold);color:#0A1F28}
.btn-gold:hover{background:#FFD25A;transform:translateY(-2px);box-shadow:0 16px 34px -16px rgba(255,192,30,.9)}
.btn-hair{border:1px solid rgba(255,255,255,.34);color:#fff;background:rgba(255,255,255,.05);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-hair:hover{border-color:rgba(255,255,255,.85);background:rgba(255,255,255,.13);transform:translateY(-2px)}
.btn-line{background:#06C755;color:#fff}
.btn-line:hover{background:#05B14C;transform:translateY(-2px)}
.btn-dark{background:var(--teal-800);color:#fff}
.btn-dark:hover{background:var(--teal-600);transform:translateY(-2px)}
.btn-out{border:1px solid var(--line);background:var(--paper);color:var(--ink)}
.btn-out:hover{border-color:var(--teal-600);color:var(--teal-600);transform:translateY(-2px);box-shadow:var(--shadow-m)}
.btn-ghost{background:rgba(255,255,255,.09);color:#fff;border:1px solid rgba(255,255,255,.3)}
.btn-ghost:hover{background:rgba(255,255,255,.18);transform:translateY(-2px)}

.quiet-link{display:inline-flex;align-items:center;gap:9px;color:rgba(255,255,255,.72);font-size:.93rem;
  font-weight:500;padding:6px 2px;position:relative;transition:.35s var(--ease)}
.quiet-link svg{width:17px;height:17px;transition:.35s var(--ease)}
.quiet-link::after{content:"";position:absolute;left:2px;right:2px;bottom:0;height:1px;
  background:rgba(255,255,255,.34);transform:scaleX(0);transform-origin:right;transition:transform .45s var(--ease)}
.quiet-link:hover{color:#fff}
.quiet-link:hover::after{transform:scaleX(1);transform-origin:left}
.quiet-link:hover svg{transform:translateX(4px)}

/* hero facts bar */
.hero-facts{position:relative;width:100%;border-top:1px solid rgba(255,255,255,.16);
  background:linear-gradient(rgba(3,16,21,.18),rgba(3,16,21,.55));
  backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}
.hero-facts ul{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,1fr)}
.hero-facts li{position:relative;padding:clamp(19px,2.2vw,26px) clamp(14px,2vw,28px) clamp(21px,2.4vw,29px)}
.hero-facts li+li::before{content:"";position:absolute;left:0;top:22%;bottom:22%;width:1px;
  background:rgba(255,255,255,.15)}
.hero-facts b{display:block;font-family:"Outfit","Noto Sans Thai",sans-serif;font-weight:300;
  font-size:clamp(1.75rem,3.2vw,2.75rem);color:#fff;letter-spacing:-.025em;line-height:1}
.hero-facts b i{font-style:normal;font-size:.46em;color:var(--gold);margin-left:3px;font-weight:400}
.hero-facts li>span{display:block;margin-top:9px;font-size:.79rem;font-weight:400;
  color:rgba(255,255,255,.62);letter-spacing:.02em;line-height:1.5}

@media (max-width:720px){
  .hero-facts ul{grid-template-columns:repeat(2,1fr)}
  .hero-facts li:nth-child(n+3){border-top:1px solid rgba(255,255,255,.14)}
  .hero-facts li:nth-child(3)::before{display:none}
}

/* ---------- trust ribbon ---------- */
.ribbon{background:var(--teal-900);color:rgba(255,255,255,.56);padding:16px 0;overflow:hidden;
  border-bottom:1px solid rgba(255,255,255,.07)}
.mq-track{display:flex;width:max-content;animation:mq 64s linear infinite}
.ribbon:hover .mq-track{animation-play-state:paused}
@keyframes mq{to{transform:translateX(-50%)}}
.mq-track span{display:flex;align-items:center;gap:38px;padding-right:38px;white-space:nowrap;
  font-size:.83rem;font-weight:400;letter-spacing:.05em}
.mq-track span i{display:block;width:4px;height:4px;background:var(--gold);opacity:.85;
  transform:rotate(45deg);flex:0 0 auto}

/* ---------- section shell ---------- */
section{position:relative}
.sec{padding:clamp(70px,9vw,124px) 0}
.sec-head{max-width:66ch;margin-bottom:clamp(38px,5vw,60px)}
.sec-head.center{margin-inline:auto;text-align:center}
.kicker{display:inline-flex;align-items:center;gap:12px;font-size:.75rem;font-weight:600;letter-spacing:.13em;
  color:var(--teal-600);margin-bottom:16px}
.kicker::before{content:"";width:34px;height:1px;background:var(--gold)}
.sec-head.center .kicker::after{content:"";width:34px;height:1px;background:var(--gold)}
h2{font-size:clamp(1.7rem,3.4vw,2.7rem);font-weight:600;letter-spacing:-.028em;line-height:1.24}
.sec-head p{color:var(--muted);margin-top:16px;font-size:clamp(.98rem,1.1vw,1.06rem);font-weight:300;line-height:1.88}

/* ---------- services ---------- */
.svc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:clamp(14px,1.7vw,22px)}
.svc{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-l);padding:clamp(26px,3vw,34px);
  position:relative;overflow:hidden;transition:.45s var(--ease);box-shadow:var(--shadow-s)}
.svc::after{content:"";position:absolute;inset:auto -30% -60% auto;width:190px;height:190px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,85,116,.10),transparent 68%);transition:.6s var(--ease);pointer-events:none}
.svc:hover{transform:translateY(-5px);box-shadow:var(--shadow-m);border-color:rgba(0,85,116,.3)}
.svc:hover::after{transform:scale(1.7)}
.svc-ico{width:54px;height:54px;border-radius:8px;display:grid;place-items:center;margin-bottom:22px;
  border:1px solid rgba(0,85,116,.24);color:var(--teal-600);background:transparent;transition:.45s var(--ease)}
.svc:hover .svc-ico{background:var(--teal-700);border-color:var(--teal-700);color:var(--gold)}
.svc-ico svg{width:27px;height:27px}
.svc h3{font-size:1.14rem;margin-bottom:10px;font-weight:600}
.svc p{color:var(--muted);font-size:.93rem;font-weight:300;line-height:1.82}
.svc-tag{display:inline-block;margin-top:18px;font-size:.76rem;font-weight:500;color:var(--muted);
  letter-spacing:.02em;padding-top:14px;border-top:1px solid var(--line);width:100%}

/* ---------- benefits ---------- */
.benefits{background:var(--paper)}
.ben-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(272px,1fr));gap:clamp(12px,1.5vw,18px)}
.ben{display:flex;gap:16px;padding:22px;border-radius:var(--r-m);background:var(--cream);
  border:1px solid transparent;transition:.4s var(--ease)}
.ben:hover{background:#fff;border-color:var(--line);box-shadow:var(--shadow-m);transform:translateY(-4px)}
.ben-ico{flex:0 0 auto;width:44px;height:44px;border-radius:6px;display:grid;place-items:center;
  background:#fff;color:var(--teal-600);border:1px solid var(--line);transition:.4s var(--ease)}
.ben:hover .ben-ico{background:var(--gold);border-color:var(--gold);color:var(--teal-900)}
.ben-ico svg{width:22px;height:22px}
.ben h4{font-size:1rem;margin-bottom:6px;font-weight:600}
.ben p{font-size:.88rem;color:var(--muted);font-weight:300;line-height:1.78}

/* ---------- product / film ---------- */
.film{background:linear-gradient(170deg,var(--teal-900),var(--teal-700) 62%,#0A5570);color:#fff;position:relative;overflow:hidden}
.film::before{content:"";position:absolute;inset:-30% -10% auto auto;width:640px;height:640px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,192,30,.13),transparent 66%);pointer-events:none}
.film .kicker{color:var(--gold)}
.film .kicker::before,.film .kicker::after{background:var(--gold)}
.film .sec-head p{color:rgba(255,255,255,.78)}
.film-top{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,4vw,58px);align-items:center;
  margin-bottom:clamp(38px,5vw,58px)}
.film-logo{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);border-radius:var(--r-l);
  padding:clamp(28px,4vw,44px);text-align:center;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}
.film-logo img{width:min(330px,100%);height:auto;margin:0 auto 20px}
.film-logo p{color:rgba(255,255,255,.74);font-size:.92rem;line-height:1.8}
.grade-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(224px,1fr));gap:14px}
.grade{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:var(--r-m);
  padding:26px 24px;transition:.45s var(--ease);position:relative;overflow:hidden}
.grade:hover{background:rgba(255,255,255,.12);transform:translateY(-6px);border-color:rgba(255,192,30,.5)}
.grade.feat{border-color:rgba(255,192,30,.55);background:rgba(255,192,30,.09)}
.grade-badge{position:absolute;top:14px;right:14px;font-size:.66rem;font-weight:700;letter-spacing:.1em;
  text-transform:uppercase;background:var(--gold);color:var(--teal-900);padding:4px 10px;border-radius:99px}
.grade h4{font-size:.86rem;color:var(--gold);margin-bottom:12px;font-weight:500;letter-spacing:.09em}
.grade .big{font-family:"Outfit","Noto Sans Thai",sans-serif;font-size:2.5rem;font-weight:300;letter-spacing:-.03em;line-height:1.05}
.grade .big i{font-style:normal;font-size:.42em;opacity:.7;margin-left:2px}
.grade ul{list-style:none;margin:15px 0 0;padding:0;display:grid;gap:8px}
.grade li{font-size:.86rem;color:rgba(255,255,255,.8);display:flex;gap:9px;align-items:flex-start;line-height:1.6}
.grade li svg{width:15px;height:15px;flex:0 0 auto;margin-top:5px;color:var(--gold)}
.price-note{margin-top:26px;display:flex;flex-wrap:wrap;gap:10px 22px;align-items:center;
  padding:20px 24px;border-radius:var(--r-m);background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14)}
.price-note .p{font-family:"Outfit","Noto Sans Thai",sans-serif;font-size:1.7rem;font-weight:400;color:var(--gold);letter-spacing:-.02em}
.price-note .t{font-size:.9rem;color:rgba(255,255,255,.78)}
.price-note .sep{width:1px;height:26px;background:rgba(255,255,255,.2)}
@media (max-width:880px){.film-top{grid-template-columns:1fr}}

/* ---------- gallery ---------- */
.gal{display:flex;align-items:flex-start;gap:clamp(10px,1.3vw,16px)}
.gal-col{flex:1 1 0;min-width:0;display:flex;flex-direction:column;gap:clamp(10px,1.3vw,16px)}
.gal figure{margin:0;position:relative;
  border-radius:var(--r-m);overflow:hidden;cursor:zoom-in;background:#E9E6E0;
  box-shadow:var(--shadow-s);transition:.5s var(--ease)}
.gal figure:hover{box-shadow:var(--shadow-l);transform:translateY(-5px)}
.gal img{width:100%;height:auto;transition:transform .8s var(--ease)}
.gal figure:hover img{transform:scale(1.045)}
.gal figcaption{position:absolute;inset:auto 0 0 0;padding:34px 18px 15px;color:#fff;font-size:.83rem;font-weight:600;
  background:linear-gradient(transparent,rgba(4,34,44,.86));opacity:0;transform:translateY(10px);
  transition:.45s var(--ease);line-height:1.5}
.gal figure:hover figcaption{opacity:1;transform:none}
.gal-zoom{position:absolute;top:12px;right:12px;width:36px;height:36px;border-radius:50%;
  background:rgba(255,255,255,.92);color:var(--teal-800);display:grid;place-items:center;
  opacity:0;transform:scale(.8);transition:.4s var(--ease);box-shadow:var(--shadow-s)}
.gal figure:hover .gal-zoom{opacity:1;transform:none}
.gal-zoom svg{width:17px;height:17px}
.gal-more{display:flex;justify-content:center;margin-top:34px}
.gal figure.hidden{display:none}

/* lightbox */
.lb{position:fixed;inset:0;z-index:200;background:rgba(4,20,26,.96);backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);display:none;align-items:center;justify-content:center;padding:clamp(14px,3vw,40px)}
.lb.open{display:flex;animation:fade .3s var(--ease)}
@keyframes fade{from{opacity:0}to{opacity:1}}
.lb img{max-width:100%;max-height:86vh;width:auto;height:auto;border-radius:var(--r-s);
  box-shadow:0 40px 100px -20px rgba(0,0,0,.8);animation:pop .42s var(--ease)}
@keyframes pop{from{opacity:0;transform:scale(.94)}to{opacity:1;transform:none}}
.lb-cap{position:absolute;left:0;right:0;bottom:max(14px,env(safe-area-inset-bottom));text-align:center;
  color:rgba(255,255,255,.72);font-size:.85rem;padding:0 20px}
.lb-btn{position:absolute;width:50px;height:50px;border-radius:50%;background:rgba(255,255,255,.12);
  color:#fff;display:grid;place-items:center;transition:.3s var(--ease);border:1px solid rgba(255,255,255,.18)}
.lb-btn:hover{background:rgba(255,255,255,.25);transform:scale(1.08)}
.lb-btn svg{width:22px;height:22px}
.lb-x{top:clamp(14px,3vw,26px);right:clamp(14px,3vw,26px)}
.lb-prev{left:clamp(10px,2vw,26px);top:50%;margin-top:-25px}
.lb-next{right:clamp(10px,2vw,26px);top:50%;margin-top:-25px}
@media (max-width:600px){.lb-prev{left:10px}.lb-next{right:10px}.lb-btn{width:42px;height:42px}}

/* ---------- video rail ---------- */
.vid{background:var(--teal-900);color:#fff;overflow:hidden}
.vid .kicker{color:var(--gold)}
.vid .kicker::before,.vid .kicker::after{background:var(--gold)}
.vid .sec-head p{color:rgba(255,255,255,.75)}
.vid-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}
.rail-nav{display:flex;gap:9px;flex:0 0 auto;margin-bottom:clamp(38px,5vw,60px)}
.rail-nav button{width:46px;height:46px;border-radius:50%;border:1px solid rgba(255,255,255,.22);
  color:#fff;display:grid;place-items:center;transition:.3s var(--ease)}
.rail-nav button:hover{background:var(--gold);color:var(--teal-900);border-color:var(--gold);transform:scale(1.07)}
.rail-nav button:disabled{opacity:.28;pointer-events:none}
.rail-nav svg{width:19px;height:19px}
.rail{display:flex;gap:clamp(12px,1.5vw,18px);overflow-x:auto;scroll-snap-type:x mandatory;
  scrollbar-width:none;padding:6px 0 20px;
  margin-inline:calc(var(--pad)*-1);padding-inline:var(--pad)}
.rail::-webkit-scrollbar{display:none}
.vcard{flex:0 0 clamp(232px,25vw,296px);scroll-snap-align:center;position:relative;
  border-radius:var(--r-l);overflow:hidden;background:#062430;box-shadow:var(--shadow-l);
  border:1px solid rgba(255,255,255,.1);transition:.45s var(--ease)}
.vcard:hover{transform:translateY(-7px);border-color:rgba(255,192,30,.4)}
.vcard video{width:100%;height:auto;display:block;background:#062430}
.vcard .pbtn{position:absolute;inset:0;display:grid;place-items:center;
  background:linear-gradient(180deg,rgba(4,34,44,.12),rgba(4,34,44,.62));transition:.4s var(--ease)}
.vcard.playing .pbtn{opacity:0;pointer-events:none}
.pbtn i{width:62px;height:62px;border-radius:50%;background:rgba(255,255,255,.94);color:var(--teal-800);
  display:grid;place-items:center;box-shadow:0 14px 34px -10px rgba(0,0,0,.6);transition:.4s var(--ease)}
.vcard:hover .pbtn i{transform:scale(1.11);background:var(--gold)}
.pbtn svg{width:24px;height:24px;margin-left:3px}
.vcap{padding:13px 16px 15px;font-size:.82rem;font-weight:600;color:rgba(255,255,255,.9);
  background:rgba(255,255,255,.05);border-top:1px solid rgba(255,255,255,.09);line-height:1.55;margin:0}
.vcard:hover .vcap{color:#fff;background:rgba(255,255,255,.09)}
.vcard .media{position:relative;display:block}
.rail-hint{text-align:center;color:rgba(255,255,255,.42);font-size:.78rem;margin-top:6px;letter-spacing:.04em}
@media (min-width:901px){.rail-hint{display:none}}

/* ---------- process ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,1.8vw,24px);position:relative}
.steps::before{content:"";position:absolute;top:31px;left:8%;right:8%;height:2px;
  background:repeating-linear-gradient(90deg,var(--line) 0 7px,transparent 7px 14px);z-index:0}
.step{position:relative;z-index:1;text-align:center}
.step-n{width:60px;height:60px;margin:0 auto 20px;border-radius:50%;display:grid;place-items:center;
  background:var(--paper);border:1px solid var(--line);color:var(--teal-600);transition:.45s var(--ease)}
.step:hover .step-n{background:var(--teal-700);border-color:var(--teal-700);color:var(--gold);transform:translateY(-4px)}
.step h4{font-size:1.02rem;margin-bottom:8px;font-weight:600}
.step p{font-size:.87rem;color:var(--muted);font-weight:300;line-height:1.78}
@media (max-width:840px){
  .steps{grid-template-columns:repeat(2,1fr)}
  .steps::before{display:none}
}
@media (max-width:460px){.steps{grid-template-columns:1fr;gap:22px}}

/* ---------- area ---------- */
.area{background:var(--paper)}
.area-grid{display:grid;grid-template-columns:1fr 1fr;gap:clamp(26px,4vw,56px);align-items:center}
.area-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.pill{padding:10px 18px;border-radius:4px;background:transparent;border:1px solid var(--line);
  font-size:.89rem;font-weight:500;transition:.35s var(--ease);display:flex;align-items:center;gap:9px}
.pill:hover{background:var(--teal-600);color:#fff;border-color:var(--teal-600);transform:translateY(-3px)}
.pill svg{width:15px;height:15px;color:var(--gold)}
.area-img{border-radius:var(--r-l);overflow:hidden;box-shadow:var(--shadow-l)}
.area-img img{width:100%;height:auto}
@media (max-width:880px){.area-grid{grid-template-columns:1fr}}

/* ---------- faq ---------- */
.faq-list{max-width:860px;margin-inline:auto;display:grid;gap:10px}
.faq-item{background:var(--paper);border:1px solid var(--line);border-radius:var(--r-m);overflow:hidden;
  transition:.4s var(--ease)}
.faq-item[open]{box-shadow:var(--shadow-m);border-color:rgba(0,85,116,.24)}
.faq-item summary{list-style:none;cursor:pointer;padding:21px 24px;display:flex;align-items:center;gap:16px;
  font-weight:600;font-size:1rem;transition:.3s var(--ease)}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:var(--teal-600)}
.faq-item summary::after{content:"";flex:0 0 auto;margin-left:auto;width:11px;height:11px;
  border-right:2px solid var(--teal-600);border-bottom:2px solid var(--teal-600);
  transform:rotate(45deg) translateY(-3px);transition:.35s var(--ease)}
.faq-item[open] summary::after{transform:rotate(-135deg) translateY(-3px)}
.faq-body{padding:0 24px 24px;color:var(--muted);font-size:.93rem;font-weight:300;line-height:1.88}

/* ---------- contact ---------- */
.contact{background:linear-gradient(165deg,var(--teal-900),var(--teal-700));color:#fff;position:relative;overflow:hidden}
.contact::before{content:"";position:absolute;inset:auto auto -35% -12%;width:600px;height:600px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,85,116,.55),transparent 68%);pointer-events:none}
.contact .kicker{color:var(--gold)}
.contact .kicker::before,.contact .kicker::after{background:var(--gold)}
.contact .sec-head p{color:rgba(255,255,255,.78)}
.ct-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:clamp(24px,3.4vw,48px);align-items:start}
.ct-actions{display:grid;gap:12px}
.ct-row{display:flex;align-items:center;gap:17px;padding:19px 22px;border-radius:var(--r-m);
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);transition:.4s var(--ease)}
.ct-row:hover{background:rgba(255,255,255,.14);transform:translateX(5px);border-color:rgba(255,192,30,.42)}
.ct-ico{flex:0 0 auto;width:48px;height:48px;border-radius:6px;display:grid;place-items:center;
  border:1px solid rgba(255,192,30,.32);color:var(--gold);transition:.4s var(--ease)}
.ct-row:hover .ct-ico{background:var(--gold);border-color:var(--gold);color:var(--teal-900)}
.ct-ico svg{width:23px;height:23px}
.ct-row .t{display:block;font-size:.76rem;color:rgba(255,255,255,.6);letter-spacing:.06em;text-transform:uppercase;font-weight:600}
.ct-row .v{display:block;font-size:1.06rem;font-weight:700;margin-top:2px;font-family:"Outfit","Noto Sans Thai",sans-serif}
.ct-row .arr{margin-left:auto;opacity:.4;transition:.4s var(--ease)}
.ct-row:hover .arr{opacity:1;transform:translateX(4px)}
.ct-row .arr svg{width:19px;height:19px}
.qr-card{background:#fff;border-radius:var(--r-l);padding:24px;text-align:center;color:var(--ink);
  box-shadow:var(--shadow-l)}
.qr-card img{width:min(226px,100%);height:auto;margin:0 auto;border-radius:var(--r-s)}
.qr-card .lid{margin-top:14px;font-weight:700;font-size:1.02rem}
.qr-card .sm{font-size:.82rem;color:var(--muted);margin-top:3px}
.socials{display:flex;gap:10px;margin-top:16px;justify-content:center;flex-wrap:wrap}
.soc{width:46px;height:46px;border-radius:6px;display:grid;place-items:center;background:var(--cream);
  color:var(--teal-800);transition:.35s var(--ease);border:1px solid var(--line)}
.soc:hover{transform:translateY(-4px) scale(1.06);color:#fff;box-shadow:var(--shadow-m)}
.soc.fb:hover{background:#1877F2;border-color:#1877F2}
.soc.tt:hover{background:#010101;border-color:#010101}
.soc.ig:hover{background:linear-gradient(45deg,#F58529,#DD2A7B,#8134AF);border-color:#DD2A7B}
.soc.mp:hover{background:#34A853;border-color:#34A853}
.soc svg{width:21px;height:21px}
@media (max-width:880px){.ct-grid{grid-template-columns:1fr}}

/* ---------- footer ---------- */
footer{background:#031A22;color:rgba(255,255,255,.6);padding:52px 0 calc(30px + var(--safe-cta,0px));font-size:.88rem}
.f-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:34px;padding-bottom:32px;
  border-bottom:1px solid rgba(255,255,255,.09)}
.f-grid p{line-height:1.85;max-width:44ch}
.f-grid h5{color:#fff;font-size:.94rem;margin:0 0 13px;font-weight:700}
.f-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:9px}
.f-grid a:hover{color:var(--gold)}
.f-bot{padding-top:22px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:.8rem;
  color:rgba(255,255,255,.42)}
@media (max-width:760px){.f-grid{grid-template-columns:1fr;gap:26px}}

/* ---------- sticky mobile CTA ---------- */
.cta-bar{position:fixed;inset:auto 0 0 0;z-index:95;display:none;gap:1px;
  background:rgba(255,255,255,.14);
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -12px 34px -14px rgba(0,0,0,.5);
  transform:translateY(110%);transition:.5s var(--ease)}
.cta-bar.show{transform:none}
.cta-bar a{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:11px 6px 12px;
  background:var(--teal-800);color:#fff;font-size:.74rem;font-weight:700;transition:.3s}
.cta-bar a:active{background:var(--teal-600)}
.cta-bar a svg{width:20px;height:20px}
.cta-bar a.l{background:#06C755}
.cta-bar a.c{background:var(--gold);color:var(--teal-900)}
@media (max-width:900px){.cta-bar{display:flex}body{padding-bottom:0}}

/* back to top */
.totop{position:fixed;right:18px;bottom:calc(78px + env(safe-area-inset-bottom));z-index:94;
  width:46px;height:46px;border-radius:50%;background:var(--paper);color:var(--teal-700);
  display:grid;place-items:center;box-shadow:var(--shadow-m);border:1px solid var(--line);
  opacity:0;pointer-events:none;transform:translateY(12px) scale(.9);transition:.45s var(--ease)}
.totop.show{opacity:1;pointer-events:auto;transform:none}
.totop:hover{background:var(--teal-600);color:var(--gold);transform:translateY(-3px)}
.totop svg{width:19px;height:19px}
@media (min-width:901px){.totop{bottom:24px}}

/* ---------- brand logo ---------- */
.brand-logo{height:58px;width:auto;flex:0 0 auto;transition:.4s var(--ease);
  filter:drop-shadow(0 2px 10px rgba(0,0,0,.45))}
.nav.stuck .brand-logo{height:46px}
.brand:hover .brand-logo{transform:translateY(-2px)}
.f-brand{display:inline-flex;margin-bottom:18px}
.f-brand .brand-logo{height:92px;filter:none}
@media (max-width:900px){
  .brand-logo{height:50px}
  .nav.stuck .brand-logo{height:42px}
}
@media (max-width:420px){.brand-logo{height:44px}}

/* ---------- mobile balance pass ---------- */
@media (max-width:560px){
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{justify-content:center;width:100%}
  .price-note{flex-direction:column;align-items:stretch;gap:14px}
  .price-note .sep{display:none}
  .price-note .btn{margin-left:0!important;justify-content:center}
  .qr-card img{width:min(200px,72%);height:auto}
  .sec-head p{font-size:.96rem}
  .rail{scroll-padding-inline:var(--pad)}
}
@media (max-width:900px){
  body{padding-bottom:66px}
  .hero-inner{padding-top:126px}
}

/* ---------- spec table inside grade cards ---------- */
.grade .spec{margin:18px 0 0;display:grid;gap:0}
.grade .spec>div{display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  padding:9px 0;border-top:1px solid rgba(255,255,255,.11)}
.grade .spec dt{margin:0;font-size:.82rem;color:rgba(255,255,255,.62);font-weight:400}
.grade .spec dd{margin:0;font-family:"Outfit","Noto Sans Thai",sans-serif;font-size:.94rem;
  font-weight:500;color:#fff;white-space:nowrap}
.grade-use{margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.11);
  font-size:.84rem;font-weight:300;color:rgba(255,255,255,.72);line-height:1.7}
.grade h4{font-family:"Outfit","Noto Sans Thai",sans-serif}

.legend{list-style:none;margin:24px 0 0;padding:20px 24px;display:grid;gap:9px;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  border:1px solid rgba(255,255,255,.13);border-radius:var(--r-m);background:rgba(255,255,255,.04)}
.legend li{font-size:.83rem;font-weight:300;color:rgba(255,255,255,.68);line-height:1.65}
.legend b{font-family:"Outfit",sans-serif;font-weight:600;color:var(--gold);margin-right:7px;letter-spacing:.04em}

.proof{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(12px,1.5vw,18px);margin-top:26px}
.proof figure{margin:0;border-radius:var(--r-m);overflow:hidden;border:1px solid rgba(255,255,255,.13);
  background:rgba(255,255,255,.04);transition:.45s var(--ease)}
.proof figure:hover{transform:translateY(-5px);border-color:rgba(255,192,30,.42)}
.proof img{width:100%;height:auto}
.proof figcaption{padding:11px 14px 13px;font-size:.8rem;font-weight:500;color:rgba(255,255,255,.74);
  border-top:1px solid rgba(255,255,255,.1)}
@media (max-width:720px){.proof{grid-template-columns:1fr}}

/* ---------- brands ---------- */
.brands{background:var(--paper)}
.brand-grid{list-style:none;margin:0;padding:0;display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:clamp(12px,1.5vw,18px)}
.brand-grid li{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:150px;padding:26px 22px;border:1px solid var(--line);border-radius:var(--r-m);
  background:var(--cream);transition:.45s var(--ease)}
.brand-grid li:hover{background:#fff;border-color:rgba(0,85,116,.3);transform:translateY(-5px);box-shadow:var(--shadow-m)}
.brand-grid img{width:auto;height:auto;max-width:100%;max-height:60px;object-fit:contain}
.brand-grid span{font-size:.79rem;font-weight:500;color:var(--muted);letter-spacing:.04em}
.brand-note{margin-top:24px;text-align:center;font-size:.9rem;font-weight:300;color:var(--muted);line-height:1.8}

/* ---------- warranty & care ---------- */
.warranty{background:linear-gradient(168deg,var(--teal-900),var(--teal-700));color:#fff;
  position:relative;overflow:hidden}
.warranty::before{content:"";position:absolute;inset:-25% -12% auto auto;width:560px;height:560px;
  border-radius:50%;background:radial-gradient(circle,rgba(255,192,30,.12),transparent 66%);pointer-events:none}
.warranty .kicker{color:var(--gold)}
.warranty .kicker::before{background:var(--gold)}
.war-grid{display:grid;grid-template-columns:minmax(200px,300px) 1fr;gap:clamp(28px,4vw,62px);
  align-items:center;margin-bottom:clamp(38px,5vw,60px)}
.war-badge img{width:100%;height:auto;filter:drop-shadow(0 20px 46px rgba(0,0,0,.42))}
.war-copy h2{margin-top:2px}
.war-copy p{color:rgba(255,255,255,.78);font-weight:300;line-height:1.88;margin-top:16px;max-width:58ch}
.war-points{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.war-points span{display:inline-flex;align-items:center;gap:10px;padding:11px 18px;border-radius:4px;
  border:1px solid rgba(255,255,255,.2);background:rgba(255,255,255,.05);
  font-size:.87rem;font-weight:500;color:rgba(255,255,255,.9)}
.war-points svg{width:18px;height:18px;color:var(--gold);flex:0 0 auto}
@media (max-width:800px){
  .war-grid{grid-template-columns:1fr;justify-items:center;text-align:center}
  .war-badge{max-width:220px}
  .war-copy{text-align:left}
  .war-points{justify-content:flex-start}
}

.care{border:1px solid rgba(255,255,255,.14);border-radius:var(--r-l);padding:clamp(26px,3.4vw,44px);
  background:rgba(255,255,255,.05);backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px)}
.care-head{max-width:60ch;margin-bottom:clamp(22px,2.6vw,32px)}
.care-head h3{font-size:clamp(1.3rem,2.2vw,1.75rem);font-weight:600;letter-spacing:-.02em}
.care-head p{color:rgba(255,255,255,.72);font-weight:300;margin-top:12px;line-height:1.82;font-size:.96rem}
.care-list{list-style:none;margin:0;padding:0;display:grid;gap:2px;
  grid-template-columns:repeat(auto-fit,minmax(330px,1fr))}
.care-list li{display:flex;gap:16px;padding:18px 20px;border-radius:var(--r-s);transition:.4s var(--ease)}
.care-list li:hover{background:rgba(255,255,255,.06)}
.care-list .n{flex:0 0 auto;width:30px;height:30px;border-radius:50%;display:grid;place-items:center;
  border:1px solid rgba(255,192,30,.5);color:var(--gold);font-family:"Outfit",sans-serif;
  font-size:.86rem;font-weight:500;margin-top:1px}
.care-list p{font-size:.9rem;font-weight:300;color:rgba(255,255,255,.82);line-height:1.8}