:root{
  --navy:#12294a; --navy-2:#1b3a66; --navy-3:#0c1e38;
  --orange:#f4801f; --orange-2:#e06e0d;
  --bg:#ffffff; --bg-alt:#f4f7fb; --line:#e3e9f2;
  --text:#22303f; --muted:#6b7a8c;
  --radius:14px; --shadow:0 6px 24px rgba(18,41,74,.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Sarabun',sans-serif;font-size:16.5px;line-height:1.75;color:var(--text);background:var(--bg)}
h1,h2,h3,h4,.brand-t{font-family:'Prompt',sans-serif;color:var(--navy);line-height:1.35}
h1{font-size:2rem}h2{font-size:1.6rem}h3{font-size:1.12rem}
img{max-width:100%;display:block}
a{color:var(--navy-2);text-decoration:none}
.container{max-width:1180px;margin:0 auto;padding:0 20px}
.center{text-align:center}.muted{color:var(--muted);font-size:.95em}
.mt12{margin-top:12px}.mt24{margin-top:24px}.mt40{margin-top:40px}
hr{border:none;border-top:1px solid var(--line);margin:18px 0}

/* buttons */
.btn{display:inline-block;padding:11px 22px;border-radius:10px;font-family:'Prompt',sans-serif;font-weight:600;font-size:.95rem;transition:.2s;border:2px solid transparent;cursor:pointer;text-align:center}
.btn-lg{padding:14px 28px;font-size:1.02rem}
.btn-orange{background:var(--orange);color:#fff}
.btn-orange:hover{background:var(--orange-2);transform:translateY(-2px)}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2);transform:translateY(-2px)}
.btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:#fff}
.btn-ghost:hover{background:#fff;color:var(--navy)}
.btn-line{background:#06c755;color:#fff}
.btn-line:hover{background:#05a648}

/* topbar + header */
.topbar{background:var(--navy-3);color:#c8d6ea;font-size:.85rem;padding:7px 0}
.topbar a{color:#fff}
.topbar-in{display:flex;gap:22px;align-items:center}
.tb-right{margin-left:auto}
.site-header{background:#fff;position:sticky;top:0;z-index:50;box-shadow:0 2px 14px rgba(18,41,74,.09)}
.header-in{display:flex;align-items:center;gap:26px;padding:12px 20px}
.brand{display:flex;align-items:center;gap:10px}
.brand img{width:52px;height:auto}
.brand-t{display:flex;flex-direction:column;line-height:1.15}
.brand-t b{font-size:1.25rem;color:var(--navy)}
.brand-t small{font-size:.68rem;color:var(--muted);font-weight:400}
.main-nav{display:flex;gap:4px;margin-left:auto}
.main-nav a{padding:9px 13px;border-radius:8px;font-family:'Prompt',sans-serif;font-weight:500;font-size:.93rem;color:var(--navy)}
.main-nav a:hover{background:var(--bg-alt);color:var(--orange)}
.main-nav a.active{color:var(--orange)}
.nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px}
.nav-toggle span{display:block;width:24px;height:3px;background:var(--navy);margin:5px 0;border-radius:2px}

/* hero slider */
.hero{position:relative;height:560px;overflow:hidden;background:var(--navy-3)}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .9s;display:flex;align-items:center}
.slide.on{opacity:1;z-index:1}
.slide-bg{position:absolute;inset:0;background-size:cover;background-position:center;transform:scale(1)}
.slide.on .slide-bg{animation:kenburns 9s ease-out forwards}
@keyframes kenburns{from{transform:scale(1)}to{transform:scale(1.09)}}
.slide.on .slide-in h2{animation:riseIn .7s .15s cubic-bezier(.2,.7,.3,1) both}
.slide.on .slide-in p{animation:riseIn .7s .35s cubic-bezier(.2,.7,.3,1) both}
.slide.on .slide-cta{animation:riseIn .7s .55s cubic-bezier(.2,.7,.3,1) both}
@keyframes riseIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}
.slide-ol{position:absolute;inset:0;background:linear-gradient(100deg,rgba(9,22,42,.88) 25%,rgba(9,22,42,.45) 60%,rgba(9,22,42,.25))}
.slide-in{position:relative;z-index:2;max-width:1180px;width:100%}
.slide-in h2{color:#fff;font-size:2.5rem;font-weight:700;max-width:640px;text-shadow:0 2px 14px rgba(0,0,0,.4)}
.slide-in p{color:#dfe8f5;font-size:1.1rem;max-width:560px;margin:16px 0 26px}
.slide-cta{display:flex;gap:14px;flex-wrap:wrap}
.slide-dots{position:absolute;bottom:22px;left:0;right:0;display:flex;justify-content:center;gap:10px;z-index:3}
.slide-dots button{width:34px;height:5px;border-radius:3px;border:none;background:rgba(255,255,255,.4);cursor:pointer;transition:.3s}
.slide-dots button.on{background:var(--orange);width:48px}

/* badges */
.badges{background:var(--navy);color:#fff;padding:22px 0}
.badges-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.badges-grid div{display:flex;flex-direction:column;padding-left:14px;border-left:3px solid var(--orange)}
.badges-grid b{font-family:'Prompt',sans-serif;font-size:1.02rem}
.badges-grid span{font-size:.83rem;color:#b9c8dd}

/* sections */
.section{padding:64px 0}
.section.alt{background:var(--bg-alt)}
.sec-head{text-align:center;margin-bottom:36px}
.sec-head small{color:var(--orange);font-family:'Prompt',sans-serif;font-weight:600;letter-spacing:.5px}
.sec-head h2{font-size:1.9rem;margin-top:4px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.h-sub{font-size:1.2rem;margin:22px 0 10px}
.lead-p{font-size:1.08rem;color:var(--navy-2);font-weight:500}

/* cards */
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s;display:block}
a.card:hover{transform:translateY(-5px);box-shadow:0 14px 34px rgba(18,41,74,.14)}
.card-img{aspect-ratio:4/3;overflow:hidden;background:var(--bg-alt)}
.card-img img,.card-img video{width:100%;height:100%;object-fit:cover;transition:.4s;display:block}
a.card:hover .card-img img{transform:scale(1.06)}
.card-body{padding:18px 20px 20px}
.card-body p{font-size:.92rem;color:var(--muted);margin-top:6px}
.link-more{color:var(--orange);font-family:'Prompt',sans-serif;font-weight:600;font-size:.9rem}
.p-foot{display:flex;justify-content:space-between;align-items:center;margin-top:12px}
.price{color:var(--navy);font-family:'Prompt',sans-serif;font-weight:700}

/* promotions */
.promo-strip{background:linear-gradient(120deg,var(--navy),var(--navy-2));padding:46px 0}
.promo-card{display:grid;grid-template-columns:280px 1fr;gap:26px;background:#fff;border-radius:var(--radius);padding:24px;align-items:center}
.promo-card img{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%}
.promo-card .tag{background:var(--orange);color:#fff;font-family:'Prompt',sans-serif;font-size:.78rem;font-weight:600;padding:3px 12px;border-radius:99px}
.promo-card h3{font-size:1.4rem;margin:10px 0 6px}
.promo-card p{margin-bottom:16px;color:var(--muted)}
.promo-in{display:flex;flex-direction:column;gap:18px}

/* packages */
.pk-card{padding:28px;text-align:center;position:relative;overflow:visible}
.pk-card h3{min-height:58px;display:flex;align-items:center;justify-content:center}
.pk-hot{border:2px solid var(--orange);transform:scale(1.02)}
.pk-badge{position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:var(--orange);color:#fff;font-family:'Prompt',sans-serif;font-size:.8rem;font-weight:600;padding:3px 18px;border-radius:99px}
.pk-price{font-family:'Prompt',sans-serif;font-size:1.35rem;font-weight:700;color:var(--orange);margin:10px 0 16px}
.pk-card ul{list-style:none;text-align:left;margin-bottom:22px}
.pk-card li{padding:7px 0 7px 26px;position:relative;border-bottom:1px dashed var(--line);font-size:.94rem}
.pk-card li::before{content:"✓";position:absolute;left:2px;color:var(--orange);font-weight:700}

/* faq */
.faq-wrap{max-width:820px}
.faq{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;overflow:hidden}
.faq summary{padding:15px 20px;font-family:'Prompt',sans-serif;font-weight:600;color:var(--navy);cursor:pointer;list-style:none;position:relative;padding-right:44px}
.faq summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);font-size:1.4rem;color:var(--orange)}
.faq[open] summary::after{content:"–"}
.faq-a{padding:0 20px 16px;color:var(--muted)}

/* cta band */
.cta-band{background:linear-gradient(110deg,var(--navy-3),var(--navy-2));color:#fff;padding:52px 0}
.cta-in{display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap}
.cta-in h2{color:#fff}
.cta-in p{color:#c3d2e6;margin-top:6px}
.cta-btns{display:flex;gap:14px;flex-wrap:wrap}

/* forms */
.lead-form label{display:block;font-family:'Prompt',sans-serif;font-weight:500;font-size:.9rem;color:var(--navy);margin-bottom:14px}
.lead-form input,.lead-form select,.lead-form textarea{width:100%;padding:11px 14px;margin-top:5px;border:1.5px solid var(--line);border-radius:9px;font-family:'Sarabun',sans-serif;font-size:1rem;background:#fff;color:var(--text)}
.lead-form input:focus,.lead-form select:focus,.lead-form textarea:focus{outline:none;border-color:var(--orange)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.hp{position:absolute;left:-9999px;opacity:0;height:0}
.form-msg{margin-top:12px;padding:12px 16px;border-radius:9px;font-weight:600}
.form-msg.ok{background:#e6f7ec;color:#137a3d}
.form-msg.err{background:#fdecec;color:#b3261e}

/* page head */
.page-head{background:linear-gradient(110deg,var(--navy-3),var(--navy));color:#fff;padding:52px 0}
.page-head h1{color:#fff;font-size:2.1rem}
.page-head p{color:#bccbdf;margin-top:6px;max-width:700px}

/* split + map */
.split{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:start}
.map-side iframe{width:100%;height:360px;border:none;border-radius:var(--radius);box-shadow:var(--shadow)}
.check-list{list-style:none;margin:12px 0}
.check-list li{padding:7px 0 7px 30px;position:relative}
.check-list li::before{content:"✓";position:absolute;left:4px;top:7px;width:19px;height:19px;background:var(--orange);color:#fff;border-radius:50%;font-size:.72rem;display:flex;align-items:center;justify-content:center;font-weight:700}
.about-imgs{display:grid;gap:16px}
.about-imgs img{border-radius:var(--radius);box-shadow:var(--shadow)}
.about-ceo{margin-top:22px}

/* products */
.cat-tabs{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-bottom:34px}
.cat-tabs a{padding:9px 20px;border-radius:99px;border:1.5px solid var(--line);font-family:'Prompt',sans-serif;font-weight:500;font-size:.9rem;background:#fff}
.cat-tabs a.on,.cat-tabs a:hover{background:var(--navy);color:#fff;border-color:var(--navy)}
.crumbs{font-size:.88rem;color:var(--muted);margin-bottom:22px}
.crumbs span{color:var(--navy);font-weight:600}
.pd-grid{display:grid;grid-template-columns:1fr 1.1fr;gap:44px}
.pd-main{border-radius:var(--radius);overflow:hidden;border:1px solid var(--line);background:#fff}
.pd-main img{width:100%;aspect-ratio:4/3.4;object-fit:contain;background:#fff;cursor:zoom-in}
.pd-thumbs{display:flex;gap:10px;margin-top:12px;flex-wrap:wrap}
.pd-thumbs img{width:82px;height:66px;object-fit:cover;border-radius:8px;border:2px solid var(--line);cursor:pointer}
.pd-thumbs img.on{border-color:var(--orange)}
.pd-price{font-family:'Prompt',sans-serif;font-size:1.7rem;font-weight:700;color:var(--orange);margin:8px 0 12px}
.pd-price small{font-size:.95rem;color:var(--muted);font-weight:400}
.pd-cta{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 8px}
.pd-info p{margin-bottom:10px}

/* projects */
.proj-block{padding:26px;margin-bottom:28px}
.proj-head{display:flex;justify-content:space-between;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.proj-gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:12px;margin-top:16px}
.proj-gallery img{aspect-ratio:4/3;object-fit:cover;border-radius:10px;cursor:zoom-in;transition:.25s}
.proj-gallery video{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:10px;display:block}
.proj-gallery img:hover{transform:scale(1.03)}

/* news / article */
.article-wrap{max-width:780px}
.article-wrap h1{margin-bottom:6px}
.article-img{border-radius:var(--radius);margin:18px 0;box-shadow:var(--shadow)}
video.article-img{width:100%;max-height:560px;background:#000}
.about-imgs video{width:100%;border-radius:var(--radius);box-shadow:var(--shadow)}
.promo-card video{border-radius:10px;aspect-ratio:4/3;object-fit:cover;width:100%}
.article-wrap p{margin-bottom:14px}

/* downloads */
.dl-list{max-width:860px}
.dl-item{display:flex;justify-content:space-between;align-items:center;gap:20px;padding:20px 24px;margin-bottom:14px;flex-wrap:wrap}

/* contact */
.contact-cards .cc{padding:22px}
.contact-cards h3{margin-bottom:8px}

/* footer */
.site-footer{background:var(--navy-3);color:#b9c8dd;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr 1.4fr;gap:34px;padding:52px 20px 40px}
.site-footer h3{color:#fff;font-size:1.05rem;margin:14px 0 8px}
.site-footer h4{color:#fff;font-size:1rem;margin-bottom:12px}
.site-footer a{color:#b9c8dd;display:block;padding:3px 0;font-size:.93rem}
.site-footer a:hover{color:var(--orange)}
.site-footer p{font-size:.93rem;margin-bottom:8px}
.social{display:flex;gap:14px;margin-top:6px}
.social a{display:inline-block}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 0;font-size:.85rem;text-align:center}
.footer-bottom a{color:#b9c8dd;display:inline}

/* float buttons */
.float-btns{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:12px;z-index:60}
.float-btns a{width:60px;height:60px;border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-family:'Prompt',sans-serif;font-weight:700;font-size:.82rem;box-shadow:0 6px 20px rgba(0,0,0,.25);transition:.2s}
.float-btns a:hover{transform:scale(1.1)}
.fb-line{background:#06c755}
.fb-call{background:var(--orange);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(244,128,31,.5)}70%{box-shadow:0 0 0 16px rgba(244,128,31,0)}100%{box-shadow:0 0 0 0 rgba(244,128,31,0)}}

/* scroll reveal (ทำงานเมื่อ JS พร้อมเท่านั้น — ไม่มี JS ก็เห็นเนื้อหาปกติ) */
body.js-anim .rv{opacity:0;transform:translateY(26px);transition:opacity .65s ease,transform .65s cubic-bezier(.2,.7,.3,1);transition-delay:var(--d,0s)}
body.js-anim .rv.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  body.js-anim .rv{opacity:1;transform:none;transition:none}
  .slide.on .slide-bg,.slide.on .slide-in h2,.slide.on .slide-in p,.slide.on .slide-cta{animation:none}
  .fb-call{animation:none}
}

/* micro-interactions */
.link-more{display:inline-block;transition:transform .25s}
a.card:hover .link-more{transform:translateX(5px)}
.main-nav a{position:relative}
.main-nav a::after{content:"";position:absolute;left:13px;right:13px;bottom:5px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.main-nav a:hover::after,.main-nav a.active::after{transform:scaleX(1)}
.pk-hot .pk-badge{animation:badgePop .5s .3s cubic-bezier(.3,1.6,.4,1) both}
@keyframes badgePop{from{opacity:0;transform:translateX(-50%) scale(.4)}to{opacity:1;transform:translateX(-50%) scale(1)}}
.badges-grid div{transition:transform .25s}
.badges-grid div:hover{transform:translateY(-4px)}

/* lightbox */
.lightbox{position:fixed;inset:0;background:rgba(9,17,30,.92);display:none;align-items:center;justify-content:center;z-index:100;padding:30px}
.lightbox.open{display:flex}
.lightbox img{max-width:92vw;max-height:88vh;border-radius:10px}
.lb-close{position:absolute;top:18px;right:22px;background:none;border:none;color:#fff;font-size:1.8rem;cursor:pointer}
.zoomable{cursor:zoom-in}

/* responsive */
@media(max-width:1024px){
  .grid-3{grid-template-columns:repeat(2,1fr)}
  .badges-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  .pd-grid,.split{grid-template-columns:1fr}
  .header-cta{display:none}
}
@media(max-width:760px){
  body{font-size:16px}
  .topbar-in{gap:12px}
  .tb-hide{display:none}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:10px 16px 16px;box-shadow:0 14px 24px rgba(18,41,74,.14)}
  .main-nav.open{display:flex}
  .nav-toggle{display:block;margin-left:auto}
  .hero{height:480px}
  .slide-in h2{font-size:1.7rem}
  .slide-in p{font-size:1rem}
  .grid-3{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .promo-card{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:24px;padding:40px 20px 30px}
  .cta-in{flex-direction:column;text-align:center}
  .pk-hot{transform:none}
  .dl-item{flex-direction:column;align-items:flex-start}
  .section{padding:44px 0}
}