/* PS SustainProducts — rebuilt responsive SEO-first UI */
:root{--ink:#14251f;--muted:#5f6c67;--green:#0c5b46;--green2:#084536;--sage:#eaf3ef;--cream:#f7f3ea;--gold:#9a6d19;--line:#dfe7e3;--white:#fff;--shadow:0 18px 60px rgba(13,57,45,.10);--radius:24px;--radius-sm:16px;--container:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Noto Sans Thai",Tahoma,sans-serif;color:var(--ink);background:#fff;line-height:1.65;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}button,input,textarea,select{font:inherit}.container{width:min(var(--container),calc(100% - 40px));margin:auto}.skip-link{position:fixed;left:16px;top:-60px;z-index:999;background:#fff;padding:10px 16px;border-radius:10px;box-shadow:var(--shadow)}.skip-link:focus{top:16px}.site-header{position:sticky;top:0;z-index:80;background:rgba(255,255,255,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(14px)}.header-row{min-height:78px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;min-width:0}.brand img{width:68px;height:54px;object-fit:contain;border:1px solid var(--line);border-radius:12px;background:#fff}.brand-name{font-size:18px;font-weight:900;color:var(--green2);line-height:1.2}.brand-sub{display:block;font-size:11px;color:var(--muted);font-weight:700;margin-top:3px}.nav{display:flex;align-items:center;gap:8px}.nav a{padding:10px 11px;border-radius:10px;font-size:14px;font-weight:800}.nav a:hover,.nav a[aria-current="page"]{background:var(--sage);color:var(--green2)}.nav-cta{background:var(--green)!important;color:#fff!important}.menu-toggle{display:none;border:1px solid var(--line);background:#fff;border-radius:10px;padding:10px 12px;font-weight:900}.contact-strip{background:var(--green2);color:#fff}.contact-strip .container{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:20px;font-size:12px}.contact-strip-links{display:flex;gap:16px;flex-wrap:wrap}.contact-strip a{text-decoration:underline;text-underline-offset:2px}.hero{position:relative;overflow:hidden;background:linear-gradient(125deg,#f7f3ea 0%,#fff 54%,#e7f2ed 100%);padding:76px 0}.hero:before{content:"";position:absolute;width:420px;height:420px;border-radius:50%;right:-150px;top:-180px;background:rgba(12,91,70,.08)}.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(360px,.95fr);gap:54px;align-items:center}.kicker{display:inline-flex;align-items:center;gap:8px;color:var(--green);font-size:12px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}.kicker:before{content:"";width:28px;height:2px;background:var(--gold)}h1,h2,h3{line-height:1.2;letter-spacing:-.02em}h1{font-size:clamp(40px,6vw,68px);margin:16px 0 18px;color:#0b3e31}h1 .accent{color:var(--gold)}.hero p{font-size:18px;color:#43534d;max-width:760px;margin:0 0 22px}.hero-points{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0}.chip{display:inline-flex;align-items:center;gap:7px;padding:9px 13px;border:1px solid #c8d9d2;border-radius:999px;background:rgba(255,255,255,.75);font-size:13px;font-weight:800}.chip:before{content:"✓";color:var(--green)}.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:11px 20px;border-radius:999px;font-weight:900;border:1px solid transparent;transition:.18s}.btn:hover{transform:translateY(-1px)}.btn-primary{background:var(--green);color:#fff}.btn-secondary{background:#fff;color:var(--green2);border-color:#b9cfc6}.hero-media{position:relative}.hero-media>img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:32px;box-shadow:var(--shadow);background:#fff}.hero-badge{position:absolute;left:-20px;bottom:26px;max-width:250px;background:#fff;border:1px solid var(--line);box-shadow:0 12px 36px rgba(0,0,0,.14);border-radius:18px;padding:16px}.hero-badge strong{display:block;color:var(--green2);font-size:17px}.hero-badge span{font-size:12px;color:var(--muted)}.trust{border-bottom:1px solid var(--line);background:#fff}.trust-grid{display:grid;grid-template-columns:repeat(4,1fr)}.trust-item{padding:24px 18px;border-right:1px solid var(--line)}.trust-item:last-child{border-right:0}.trust-item strong{display:block;color:var(--green2);font-size:18px}.trust-item span{display:block;color:var(--muted);font-size:13px;margin-top:4px}section{padding:72px 0}.section-soft{background:var(--cream)}.section-sage{background:var(--sage)}.section-head{display:flex;align-items:end;justify-content:space-between;gap:30px;margin-bottom:30px}.section-head>div{max-width:780px}.section-head h2{font-size:clamp(30px,4vw,44px);margin:7px 0;color:#113d32}.section-head p{margin:0;color:var(--muted)}.text-link{font-weight:900;color:var(--green);white-space:nowrap}.category-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.category-card{position:relative;overflow:hidden;min-height:340px;border-radius:var(--radius);background:#163f34;color:#fff;box-shadow:var(--shadow)}.category-card img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.62;transition:.25s}.category-card:hover img{transform:scale(1.035)}.category-card:after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 25%,rgba(4,33,26,.88) 100%)}.category-card-content{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:26px}.category-card h3{font-size:26px;margin:0 0 7px}.category-card p{margin:0;color:#e8f0ed;font-size:14px}.product-toolbar{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}.filter-btn{border:1px solid var(--line);background:#fff;color:var(--ink);border-radius:999px;padding:9px 14px;font-weight:800;cursor:pointer}.filter-btn.active{background:var(--green);border-color:var(--green);color:#fff}.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.product-card{border:1px solid var(--line);border-radius:20px;background:#fff;overflow:hidden;box-shadow:0 10px 28px rgba(11,62,49,.06)}.product-card-media{aspect-ratio:1/1;background:#f3f4f1;overflow:hidden}.product-card-media img{width:100%;height:100%;object-fit:cover;transition:.2s}.product-card:hover img{transform:scale(1.025)}.product-card-body{padding:15px}.product-card h3{font-size:17px;margin:0 0 5px;color:#113d32}.product-meta{font-size:12px;color:var(--gold);font-weight:900;text-transform:uppercase}.spec-list{display:grid;gap:5px;margin-top:10px}.spec-row{display:flex;justify-content:space-between;gap:12px;font-size:12px;color:var(--muted);border-top:1px dashed #e6ebe8;padding-top:6px}.spec-row b{color:var(--ink)}.feature-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.feature{background:#fff;border:1px solid var(--line);border-radius:18px;padding:22px}.feature-num{width:38px;height:38px;border-radius:50%;display:grid;place-items:center;background:var(--sage);color:var(--green2);font-weight:900}.feature h3{font-size:18px;margin:14px 0 6px}.feature p{font-size:14px;color:var(--muted);margin:0}.split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}.split-media{border-radius:28px;overflow:hidden;box-shadow:var(--shadow)}.split-media img{width:100%;aspect-ratio:4/3;object-fit:cover}.split-copy h2{font-size:clamp(30px,4vw,44px);margin:8px 0 14px;color:#113d32}.split-copy p{color:var(--muted)}.check-list{list-style:none;padding:0;margin:22px 0;display:grid;gap:10px}.check-list li{display:flex;gap:10px}.check-list li:before{content:"✓";flex:0 0 25px;height:25px;display:grid;place-items:center;border-radius:50%;background:var(--green);color:#fff;font-weight:900;font-size:12px}.faq{display:grid;gap:12px;max-width:900px;margin:auto}.faq details{border:1px solid var(--line);border-radius:16px;background:#fff;padding:0 18px}.faq summary{cursor:pointer;font-weight:900;padding:18px 0;color:#163f34}.faq p{margin:0;padding:0 0 18px;color:var(--muted)}.gallery-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.gallery-card{border:1px solid var(--line);border-radius:18px;overflow:hidden;background:#fff;box-shadow:0 8px 24px rgba(11,62,49,.06)}.gallery-card button{display:block;border:0;padding:0;background:none;width:100%;cursor:zoom-in}.gallery-card img{width:100%;aspect-ratio:4/3;object-fit:cover;background:#f7f7f4}.gallery-caption{padding:12px 14px;font-size:13px;font-weight:800;color:#31463e}.catalog-grid .gallery-card img{aspect-ratio:auto;object-fit:contain}.cta-panel{background:linear-gradient(130deg,var(--green2),#0b6a50);color:#fff;border-radius:30px;padding:38px;display:grid;grid-template-columns:1fr auto;gap:30px;align-items:center}.cta-panel h2{font-size:clamp(28px,4vw,42px);margin:0 0 8px}.cta-panel p{margin:0;color:#e3f0eb}.cta-panel .btn-secondary{border-color:#fff}.content-prose{max-width:900px;margin:auto}.content-prose h2{font-size:34px;color:#113d32}.content-prose h3{font-size:22px;color:#174a3d}.content-prose p,.content-prose li{color:#51605a}.breadcrumb{font-size:12px;color:var(--muted);margin-bottom:18px}.breadcrumb a{color:var(--green);font-weight:800}.site-footer{background:#082f26;color:#fff;padding:48px 0 20px}.footer-grid{display:grid;grid-template-columns:1.2fr .8fr .8fr;gap:36px}.footer-brand{display:flex;gap:13px;align-items:flex-start}.footer-brand img{width:72px;height:58px;object-fit:contain;background:#fff;border-radius:10px}.footer-title{font-weight:900;font-size:18px}.footer-text{color:#c8d7d2;font-size:13px;margin-top:8px}.footer-nav{display:grid;gap:8px;font-size:13px;color:#d9e4e0}.footer-nav a:hover{color:#fff;text-decoration:underline}.footer-bottom{border-top:1px solid rgba(255,255,255,.14);margin-top:32px;padding-top:18px;color:#9eb6ad;font-size:11px;display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap}.floating-contact{position:fixed;right:18px;bottom:18px;z-index:70;display:flex;flex-direction:column;gap:8px}.floating-contact a{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;color:#fff;background:var(--green);box-shadow:0 10px 25px rgba(0,0,0,.18);font-size:12px;font-weight:900}.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.9);display:none;align-items:center;justify-content:center;padding:30px;z-index:999}.lightbox.open{display:flex}.lightbox-inner{position:relative;max-width:1100px;max-height:90vh}.lightbox img{max-width:100%;max-height:82vh;border-radius:12px}.lightbox-close{position:absolute;right:0;top:-48px;width:40px;height:40px;border-radius:50%;border:0;background:#fff;font-size:22px;cursor:pointer}.lightbox-caption{text-align:center;color:#fff;margin-top:10px;font-size:13px}.empty{grid-column:1/-1;text-align:center;border:1px dashed #aebfb8;border-radius:18px;padding:30px;color:var(--muted);background:#fff}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid #ffbf47;outline-offset:3px}
@media(max-width:980px){.nav{position:absolute;left:20px;right:20px;top:76px;display:none;flex-direction:column;align-items:stretch;background:#fff;border:1px solid var(--line);padding:12px;border-radius:16px;box-shadow:var(--shadow)}.nav.open{display:flex}.menu-toggle{display:inline-flex}.hero-grid,.split{grid-template-columns:1fr}.hero-media{max-width:650px}.hero-badge{left:14px}.trust-grid,.feature-grid{grid-template-columns:repeat(2,1fr)}.category-grid{grid-template-columns:1fr 1fr}.product-grid{grid-template-columns:repeat(3,1fr)}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.gallery-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:680px){.container{width:min(100% - 28px,var(--container))}.contact-strip .container{justify-content:center}.contact-strip .address-mini{display:none}.contact-strip-links{justify-content:center}.brand-sub{display:none}.brand-name{font-size:15px}.brand img{width:54px;height:44px}.hero{padding:52px 0}.hero-grid{grid-template-columns:1fr}.hero p{font-size:16px}.hero-media{margin-top:8px}.hero-badge{position:static;margin-top:12px;max-width:none}.trust-grid,.feature-grid,.category-grid,.product-grid,.gallery-grid{grid-template-columns:1fr 1fr}.trust-item:nth-child(2){border-right:0}.trust-item:nth-child(-n+2){border-bottom:1px solid var(--line)}.category-card{min-height:280px}.section-head{align-items:flex-start;flex-direction:column}.cta-panel{grid-template-columns:1fr;padding:28px}.footer-grid{grid-template-columns:1fr}.footer-grid>div:first-child{grid-column:auto}.actions .btn{width:100%}}
@media(max-width:450px){.product-grid,.gallery-grid{grid-template-columns:1fr}.trust-grid{grid-template-columns:1fr}.trust-item{border-right:0;border-bottom:1px solid var(--line)}.trust-item:last-child{border-bottom:0}.feature-grid{grid-template-columns:1fr}.category-grid{grid-template-columns:1fr}h1{font-size:38px}.section-head h2{font-size:30px}.floating-contact{right:12px;bottom:12px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{animation:none!important;transition:none!important}}
.product-card-media{display:block;width:100%;border:0;padding:0;cursor:zoom-in}.product-card[hidden]{display:none}


/* ===== V39 header/contact/ceramic-knowledge updates ===== */
.header-row{min-height:94px}
.site-header .brand{gap:14px}
.site-header .brand img{width:82px;height:65px;animation:psLogoFloat 4.6s ease-in-out infinite;transform-origin:center;will-change:transform}
.site-header .brand-name{font-size:22px;letter-spacing:.01em}
.site-header .brand-sub{font-size:13px;line-height:1.35;margin-top:4px}
@keyframes psLogoFloat{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-4px) scale(1.025)}}
.hero-media>img.hero-product-image{aspect-ratio:827/650;object-fit:contain;background:#fff;padding:0}
.hero-contact-panel{margin-top:22px;padding:16px;border:1px solid #c9dbd4;background:rgba(255,255,255,.86);border-radius:20px;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:18px;align-items:center;box-shadow:0 10px 30px rgba(11,62,49,.06)}
.hero-contact-copy strong{display:block;color:var(--green2);font-size:16px;margin-bottom:9px}
.hero-contact-links{display:flex;flex-wrap:wrap;gap:8px 14px;font-size:13px;font-weight:800}
.hero-contact-links a{color:var(--green);text-decoration:underline;text-underline-offset:3px}
.qr-contact-grid{display:flex;gap:10px;align-items:flex-start}
.qr-contact-card{display:grid;gap:5px;justify-items:center;width:116px;padding:8px;border:1px solid var(--line);border-radius:14px;background:#fff;color:var(--green2);font-size:10px;font-weight:900;text-align:center;line-height:1.25}
.qr-contact-card:hover{border-color:#8fb7a8;box-shadow:0 8px 22px rgba(11,62,49,.10)}
.qr-contact-card img{width:98px;height:98px;object-fit:contain;background:#fff;border-radius:8px}
.ceramic-knowledge .section-head{margin-bottom:24px}
.knowledge-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.knowledge-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:24px;box-shadow:0 10px 28px rgba(11,62,49,.05)}
.knowledge-card:last-child:nth-child(odd){grid-column:1/-1}
.knowledge-label{display:inline-flex;padding:6px 9px;border-radius:999px;background:var(--sage);color:var(--green);font-size:11px;font-weight:900;letter-spacing:.08em}
.knowledge-card h3{margin:13px 0 8px;color:#113d32;font-size:21px}
.knowledge-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.8}
.knowledge-note{margin-top:22px;background:#fff;border:1px solid #b9cfc6;border-radius:22px;padding:26px}
.knowledge-note h3{margin:0 0 8px;color:var(--green2);font-size:24px}
.knowledge-note p{color:var(--muted);line-height:1.8}
.knowledge-tip{padding:14px 16px;background:#f7f3ea;border-left:4px solid var(--gold);border-radius:10px}
@media(max-width:1100px){.site-header .brand-sub{max-width:250px}.nav{gap:4px}.nav a{padding:9px 8px;font-size:13px}}
@media(max-width:980px){.hero-contact-panel{grid-template-columns:1fr}.qr-contact-grid{justify-content:flex-start}}
@media(max-width:680px){.header-row{min-height:82px}.site-header .brand img{width:65px;height:53px}.site-header .brand-name{font-size:18px}.site-header .brand-sub{display:none}.hero-contact-panel{padding:14px}.qr-contact-grid{width:100%}.qr-contact-card{width:calc(50% - 5px)}.qr-contact-card img{width:112px;height:112px}.knowledge-grid{grid-template-columns:1fr}.knowledge-card:last-child:nth-child(odd){grid-column:auto}}
@media(max-width:380px){.qr-contact-grid{display:grid;grid-template-columns:1fr}.qr-contact-card{width:100%}}
@media(prefers-reduced-motion:reduce){.site-header .brand img{animation:none}}