:root{--ink:#102028;--muted:#63737a;--teal:#0f6b68;--teal-2:#0a4748;--gold:#c9a15b;--mist:#f3f7f5;--white:#fff;--line:#dbe6e1;--shadow:0 20px 55px rgba(16,32,40,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;color:var(--ink);font-family:"Noto Sans Thai","Tahoma",sans-serif;line-height:1.75;background:#fff}a{color:inherit;text-decoration:none}.container{width:min(1160px,92%);margin:auto}.topbar{background:var(--teal-2);color:#d8ebe5;font-size:.83rem;padding:7px 0}.topbar .container{display:flex;justify-content:space-between;gap:20px}.nav{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.96);backdrop-filter:blur(14px);border-bottom:1px solid var(--line)}.nav-inner{height:78px;display:flex;align-items:center;justify-content:space-between;gap:28px}.brand{display:flex;align-items:center;gap:13px;font-weight:800;letter-spacing:.01em}.brand img{width:46px;height:46px;border-radius:12px;object-fit:cover}.brand small{display:block;color:var(--teal);font-size:.68rem;letter-spacing:.08em}.nav-links{display:flex;align-items:center;gap:25px;font-size:.92rem}.nav-links a{color:#42545a}.nav-links a:hover,.nav-links .active{color:var(--teal);font-weight:700}.menu{display:none;border:0;background:transparent;font-size:1.6rem;color:var(--teal)}.hero{min-height:540px;background:linear-gradient(90deg,rgba(8,42,44,.82),rgba(8,42,44,.32)),url('/img/banner.jpg') center/cover;display:flex;align-items:center;color:#fff}.hero-content{max-width:700px;padding:85px 0}.eyebrow{color:var(--gold);font-size:.78rem;letter-spacing:.18em;text-transform:uppercase;font-weight:700}.hero h1{font-size:clamp(2.4rem,6vw,5.1rem);line-height:1.13;margin:14px 0 22px;letter-spacing:-.04em}.hero p{font-size:1.15rem;color:#e5f0ed;max-width:650px}.actions{display:flex;flex-wrap:wrap;gap:13px;margin-top:30px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:13px 22px;border-radius:4px;background:var(--gold);color:#1f302e;font-weight:800;border:1px solid var(--gold);transition:.2s}.btn:hover{transform:translateY(-2px);box-shadow:0 10px 22px rgba(0,0,0,.14)}.btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}.section{padding:92px 0}.section.alt{background:var(--mist)}.section-head{display:flex;justify-content:space-between;align-items:end;gap:25px;margin-bottom:38px}.section-head h2{font-size:clamp(1.8rem,3vw,3rem);line-height:1.2;margin:8px 0}.section-head p{max-width:600px;color:var(--muted);margin:0}.kicker{color:var(--teal);font-weight:800;font-size:.82rem;letter-spacing:.12em}.split{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}.image-card{position:relative}.image-card img{width:100%;display:block;border-radius:6px;box-shadow:var(--shadow)}.image-card:after{content:"";position:absolute;right:-18px;bottom:-18px;width:42%;height:42%;border:1px solid var(--gold);z-index:-1}.lead{font-size:1.14rem;color:#3e5559}.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:28px}.stat{padding:19px;background:#fff;border:1px solid var(--line)}.stat strong{display:block;font-size:1.65rem;color:var(--teal)}.stat span{color:var(--muted);font-size:.85rem}.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.feature{padding:28px;background:#fff;border-top:3px solid var(--gold);box-shadow:0 9px 25px rgba(16,32,40,.06)}.feature h3{margin:8px 0 9px;font-size:1.15rem}.feature p{color:var(--muted);margin:0;font-size:.94rem}.number{color:var(--gold);font-size:.82rem;font-weight:800;letter-spacing:.12em}.products-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:17px}.product-card{background:#fff;border:1px solid var(--line);overflow:hidden;transition:.25s}.product-card:hover{transform:translateY(-5px);box-shadow:var(--shadow)}.product-card img{width:100%;aspect-ratio:1.25;object-fit:cover;display:block}.product-card .body{padding:17px}.product-card h3{font-size:1rem;line-height:1.45;margin:0 0 8px}.product-card p{color:var(--muted);font-size:.86rem;margin:0 0 13px}.text-link{color:var(--teal);font-weight:800;font-size:.88rem}.banner-cta{background:linear-gradient(110deg,var(--teal-2),var(--teal));color:#fff;padding:56px 0}.banner-cta .inner{display:flex;align-items:center;justify-content:space-between;gap:30px}.banner-cta h2{margin:0 0 8px;line-height:1.3}.banner-cta p{color:#d3e5e0;margin:0}.page-hero{background:linear-gradient(100deg,var(--teal-2),var(--teal));color:#fff;padding:76px 0}.page-hero h1{font-size:clamp(2.2rem,5vw,4rem);margin:8px 0 10px}.breadcrumb{color:#b4d4cc;font-size:.9rem}.prose{max-width:790px}.prose p{color:#475d61}.list-check{padding:0;list-style:none}.list-check li{padding:8px 0 8px 28px;position:relative;color:#475d61}.list-check li:before{content:"✓";position:absolute;left:0;top:8px;color:var(--gold);font-weight:900}.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:17px}.gallery img{width:100%;aspect-ratio:1.35;object-fit:cover}.faq{border-top:1px solid var(--line)}details{border-bottom:1px solid var(--line);padding:20px 0}summary{cursor:pointer;font-weight:800;font-size:1.05rem;list-style:none;display:flex;justify-content:space-between;gap:20px}summary:after{content:"+";color:var(--gold);font-size:1.4rem}details[open] summary:after{content:"–"}details p{color:var(--muted);max-width:800px;margin:12px 0 0}.form-wrap{display:grid;grid-template-columns:.8fr 1.2fr;gap:55px;align-items:start}.contact-panel{background:var(--teal-2);color:#fff;padding:35px}.contact-panel p{color:#c4ddd7}.form{background:#fff;border:1px solid var(--line);padding:30px;box-shadow:var(--shadow)}label{display:block;font-size:.87rem;font-weight:800;margin-bottom:16px;color:#31494d}input,textarea,select{width:100%;margin-top:7px;padding:13px 14px;border:1px solid #cfddda;border-radius:3px;font:inherit;color:var(--ink);background:#fbfdfc}textarea{min-height:150px;resize:vertical}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}.notice{padding:15px 18px;background:#edf8f2;color:#166345;border-left:3px solid #42a873;margin-bottom:20px}.hidden-field{position:absolute;left:-9999px}.detail-grid{display:grid;grid-template-columns:1fr 1fr;gap:60px;align-items:start}.detail-grid img{width:100%;border-radius:5px}.tag{display:inline-block;color:var(--teal);background:#e3f0ed;padding:4px 10px;font-size:.8rem;font-weight:800;margin-bottom:15px}.specs{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:24px 0}.spec{border-left:2px solid var(--gold);padding-left:13px}.spec b{display:block}.spec span{font-size:.87rem;color:var(--muted)}.footer{background:#0c2429;color:#bdd0cc;padding:54px 0 24px}.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:35px}.footer h3{color:#fff;margin-top:0}.footer p,.footer a{font-size:.9rem;color:#abc1bc}.footer a:hover{color:#fff}.copyright{border-top:1px solid rgba(255,255,255,.12);margin-top:35px;padding-top:18px;font-size:.78rem;color:#85a49e}.back-top{position:fixed;right:20px;bottom:20px;background:var(--gold);color:#1c3532;border:0;width:42px;height:42px;border-radius:50%;font-weight:900;cursor:pointer;box-shadow:var(--shadow)}
@media(max-width:900px){.nav-links{position:absolute;top:78px;left:0;right:0;background:#fff;display:none;flex-direction:column;align-items:stretch;padding:16px 5%;border-bottom:1px solid var(--line)}.nav-links.open{display:flex}.menu{display:block}.feature-grid{grid-template-columns:1fr 1fr}.products-grid{grid-template-columns:repeat(3,1fr)}.split,.detail-grid,.form-wrap{grid-template-columns:1fr;gap:35px}.footer-grid{grid-template-columns:1fr 1fr}.banner-cta .inner{display:block}.banner-cta .btn{margin-top:20px}}
@media(max-width:600px){.topbar .container{font-size:.72rem}.topbar span:last-child{display:none}.nav-inner{height:68px}.nav-links{top:68px}.brand img{width:40px;height:40px}.hero{min-height:590px}.hero-content{padding:60px 0}.section{padding:65px 0}.section-head{display:block}.feature-grid,.products-grid,.gallery,.stats,.form-row{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}.detail-grid{gap:25px}.specs{grid-template-columns:1fr 1fr}.page-hero{padding:55px 0}}