/* carton.omio.top — Tat Seng Packaging (Suzhou) — Thai site styles */
:root{
  --green:#1e6b34; --green-dark:#14532a; --green-light:#e8f3ec;
  --kraft:#c8a06a; --ink:#1c2430; --muted:#5b6673; --bg:#ffffff;
  --alt:#f5f8f6; --line:#e2e8e4; --radius:12px;
  --shadow:0 6px 24px rgba(20,60,35,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans Thai","Sarabun","Leelawadee UI","Segoe UI",Tahoma,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px}
img{max-width:100%;height:auto;display:block}
a{color:var(--green);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.35;font-weight:700;color:var(--ink)}
h1{font-size:clamp(1.5rem,3.4vw,2.3rem)}
h2{font-size:clamp(1.3rem,2.6vw,1.75rem);margin-bottom:.9rem}
h3{font-size:1.08rem;margin-bottom:.4rem}
.container{max-width:1120px;margin:0 auto;padding:0 20px}
section{padding:56px 0}
.center{text-align:center;margin-top:1.4rem}
.alt-bg{background:var(--alt)}
.lead{font-size:1.06rem;color:var(--muted);max-width:60em}
.round{border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:1rem}
.req{color:#c0392b}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:#fff;box-shadow:0 1px 10px rgba(0,0,0,.07)}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:10px 20px;max-width:1120px;margin:0 auto}
.brand img{width:auto;height:52px}
.main-nav ul{display:flex;gap:6px;list-style:none;align-items:center}
.main-nav a{display:block;padding:10px 16px;border-radius:8px;font-weight:600;color:var(--ink)}
.main-nav a:hover{background:var(--green-light);text-decoration:none}
.main-nav a.active{background:var(--green);color:#fff}
.nav-toggle{display:none;font-size:1.5rem;background:none;border:none;cursor:pointer;color:var(--green);padding:6px 10px}

/* hero */
.hero{position:relative;padding:0;background:var(--green-dark);overflow:hidden}
.hero-slides{position:relative;aspect-ratio:990/200;min-height:220px}
.slide{position:absolute;inset:0;opacity:0;transition:opacity .8s ease;pointer-events:none}
.slide.active{opacity:1;pointer-events:auto}
.slide img{width:100%;height:100%;object-fit:cover}
.slide-caption{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;align-items:flex-end;text-align:right;padding:0 6%;background:linear-gradient(to right,rgba(10,30,18,.55),rgba(10,30,18,.15) 55%,rgba(10,30,18,.55))}
.slide-caption h1,.slide-caption h2{color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.5);font-size:clamp(1.05rem,2.6vw,1.9rem)}
.hero-dots{position:absolute;bottom:12px;left:50%;transform:translateX(-50%);display:flex;gap:8px;z-index:5}
.hero-dots button{width:12px;height:12px;border-radius:50%;border:none;background:rgba(255,255,255,.5);cursor:pointer}
.hero-dots button.active{background:#fff}

/* buttons */
.btn{display:inline-block;background:var(--green);color:#fff;font-weight:700;padding:12px 28px;border-radius:999px;transition:.25s;border:none;cursor:pointer;font-size:1rem}
.btn:hover{background:var(--green-dark);text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow)}
.btn-lg{padding:15px 38px;font-size:1.08rem}
.btn-ghost{background:transparent;color:var(--green);border:2px solid var(--green)}
.btn-ghost:hover{background:var(--green-light);color:var(--green-dark)}

/* intro + stats */
.intro{text-align:center}
.stats{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;margin:1.8rem 0}
.stat{background:var(--green-light);border-radius:var(--radius);padding:18px 28px;min-width:170px}
.stat .num{display:block;font-size:1.9rem;font-weight:800;color:var(--green)}
.stat .lbl{color:var(--muted);font-size:.92rem}

/* grids & cards */
.grid-3{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(auto-fill,minmax(245px,1fr));gap:22px}
.feature{background:var(--alt);border-radius:var(--radius);padding:26px;transition:.25s;border:1px solid var(--line)}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);background:#fff}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:.25s;display:flex;flex-direction:column}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.card img{aspect-ratio:4/3;object-fit:cover;width:100%}
.card-body{padding:16px 18px}
.card-body h3 a{color:var(--ink);font-size:1rem}
.card-body p{color:var(--muted);font-size:.9rem;margin-top:6px}
figure img{border-radius:var(--radius)}
figcaption{color:var(--muted);font-size:.9rem;margin-top:8px;text-align:center}

/* products groups */
.group-title{margin-top:34px;padding-top:20px;border-top:1px dashed var(--line)}
.group-title:first-child{border-top:none;margin-top:0;padding-top:0}

/* page hero */
.page-hero{background:linear-gradient(135deg,var(--green-dark),var(--green));color:#fff;padding:64px 0;text-align:center}
.page-hero h1{color:#fff;margin-bottom:8px}
.page-hero p{color:#d8ecdf;max-width:46em;margin:0 auto}

/* two col */
.two-col{display:grid;grid-template-columns:1.6fr 1fr;gap:44px}
.two-col h3{color:var(--green);margin-top:1rem}

/* machines */
.machines{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:26px}
.machine{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.machine img{aspect-ratio:4/3;object-fit:cover;width:100%}
.machine h3{padding:14px 18px 0}
.machine p{padding:0 18px 18px;color:var(--muted);font-size:.93rem}

/* certs & timeline */
.certs{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:10px}
.certs li{background:var(--green-light);padding:10px 16px;border-radius:8px;font-size:.95rem}
.timeline{list-style:none;max-width:720px;margin:0 auto}
.timeline li{display:flex;gap:18px;padding:14px 0;border-bottom:1px dashed var(--line)}
.timeline .year{font-weight:800;color:var(--green);min-width:110px}

/* breadcrumb */
.breadcrumb{padding:18px 20px 0;font-size:.9rem;color:var(--muted)}

/* product page */
.product-hero{display:grid;grid-template-columns:minmax(280px,520px) 1fr;gap:40px;align-items:start;margin-bottom:34px}
.product-hero img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.short{color:var(--muted);font-size:1.05rem;margin:10px 0 14px}
.feats{margin:0 0 20px 20px}
.feats li{margin:6px 0}
.product-actions{display:flex;gap:14px;flex-wrap:wrap}
.product-page p{margin-bottom:14px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:18px;margin:10px 0 26px}
.rel-card{display:flex;align-items:center;gap:14px;border:1px solid var(--line);border-radius:var(--radius);padding:10px;transition:.25s;color:var(--ink)}
.rel-card:hover{box-shadow:var(--shadow);text-decoration:none;transform:translateY(-2px)}
.rel-card img{width:86px;height:66px;object-fit:cover;border-radius:8px;flex-shrink:0}
.rel-card span{font-size:.92rem;font-weight:600}
.pager{display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;border-top:1px solid var(--line);padding-top:20px}
.pager a{font-weight:600;font-size:.93rem;max-width:46%}

/* faq */
.faq-wrap{max-width:860px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--radius);margin-bottom:14px;overflow:hidden}
.faq-item summary{cursor:pointer;font-weight:700;padding:18px 22px;list-style:none;position:relative}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:22px;color:var(--green);font-size:1.4rem;transition:.25s}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-a{padding:0 22px 20px;color:var(--muted)}
.faq-cta{text-align:center;background:var(--green-light);border-radius:var(--radius);padding:36px 24px;margin-top:34px}

/* contact */
.contact-wrap{display:grid;grid-template-columns:1fr 1.4fr;gap:44px;align-items:start}
.contact-info p{margin-bottom:12px}
.contact-form{display:grid;grid-template-columns:1fr 1fr;gap:16px;background:var(--alt);padding:28px;border-radius:var(--radius)}
.contact-form label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.94rem}
.contact-form label[for="cf-message"]{grid-column:1/-1}
.contact-form input,.contact-form select,.contact-form textarea{padding:11px 14px;border:1px solid var(--line);border-radius:8px;font:inherit;background:#fff}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:2px solid var(--green);border-color:var(--green)}
.contact-form .btn{grid-column:1/-1;justify-self:start}
.form-note{grid-column:1/-1;color:var(--muted);font-size:.85rem}
.form-success{margin-top:20px;background:#e7f6ec;border:2px solid var(--green);border-radius:var(--radius);padding:26px;text-align:center}
.form-success h3{color:var(--green);font-size:1.3rem}
.form-error{margin-top:20px;background:#fdeeee;border:2px solid #c0392b;border-radius:var(--radius);padding:18px;color:#90271b}

/* CTA band */
.cta-band{background:linear-gradient(135deg,var(--green-dark),var(--green));color:#fff;text-align:center;padding:64px 0}
.cta-band h2{color:#fff}
.cta-band p{color:#d8ecdf;margin:10px auto 24px;max-width:44em}
.cta-band .btn{background:#fff;color:var(--green-dark)}
.cta-band .btn:hover{background:#eaf6ee}
.cta-inline{background:var(--alt);text-align:center;border-top:1px solid var(--line)}
.cta-inline p{color:var(--muted);margin:8px 0 18px}

/* footer */
.site-footer{background:#12261a;color:#c9d8cf;padding:56px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1.4fr;gap:36px;padding-bottom:36px}
.site-footer h3{color:#fff;margin-bottom:12px;font-size:1.05rem}
.site-footer a{color:#a9d0b8}
.site-footer a:hover{color:#fff}
.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.12);padding:18px 20px;font-size:.88rem;color:#8aa394}

/* responsive */
@media(max-width:900px){
  .two-col,.contact-wrap{grid-template-columns:1fr}
  .product-hero{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .nav-toggle{display:block}
  .main-nav ul{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;flex-direction:column;padding:10px 14px 16px;box-shadow:0 12px 24px rgba(0,0,0,.12)}
  .main-nav ul.open{display:flex}
  .main-nav{position:relative;width:auto}
  .main-nav a{padding:12px 16px}
  section{padding:42px 0}
  .contact-form{grid-template-columns:1fr;padding:20px}
  .footer-grid{grid-template-columns:1fr}
  .hero-slides{min-height:180px}
}