/* EsoDant — brand palette from the product data sheets */
:root{
  --bg:#F4F9F9;        /* page */
  --bg-tint:#E2EFEF;   /* datasheet page tint */
  --petrol:#123F45;    /* cover band */
  --petrol-2:#0C2D32;
  --teal:#42B6A0;      /* EsoDant wordmark */
  --teal-dark:#2E8F7D;
  --cyan:#0AB1D6;      /* Ester India logo */
  --ink:#2F3538;
  --ink-2:#58595B;     /* datasheet body text */
  --muted:#7A8487;
  --rule:#CADCDC;
  --white:#fff;
  --head:"Bai Jamjuree",system-ui,sans-serif;
  --body:"Mulish","Avenir Next","Segoe UI",system-ui,sans-serif;
  --radius:14px;
  --shadow:0 8px 30px rgba(18,63,69,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--teal-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{font-family:var(--head);color:var(--petrol);line-height:1.15;margin:0 0 .5em;font-weight:600}
h1{font-size:clamp(2rem,4.2vw,3.2rem)}
h2{font-size:clamp(1.5rem,2.6vw,2.1rem)}
h3{font-size:1.2rem}
h4{font-size:.85rem;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin:1.4em 0 .4em}
p{margin:0 0 1em}
.wrap{max-width:1160px;margin:0 auto;padding:0 1.25rem}
.section{padding:4rem 1.25rem}
.muted{color:var(--muted)}
.small{font-size:.875rem}
.eyebrow{font-family:var(--head);font-weight:600;letter-spacing:.14em;text-transform:uppercase;font-size:.78rem;color:var(--teal);margin-bottom:.6em}
.eyebrow a{color:inherit}
.lead{font-size:1.15rem;color:var(--ink-2);max-width:62ch}
.link{font-weight:700}

/* buttons */
.btn{display:inline-block;background:var(--teal);color:#fff;font-weight:700;padding:.8rem 1.4rem;border-radius:999px;border:2px solid var(--teal);cursor:pointer;font-family:var(--body);font-size:1rem;transition:background .15s,border-color .15s}
.btn:hover{background:var(--teal-dark);border-color:var(--teal-dark);text-decoration:none;color:#fff}
.btn-ghost{background:transparent;color:var(--petrol);border-color:var(--petrol)}
.btn-ghost:hover{background:var(--petrol);color:#fff}
.hero .btn-ghost{color:#fff;border-color:#fff}
.hero .btn-ghost:hover{background:#fff;color:var(--petrol)}
.btn-small{padding:.5rem 1rem;font-size:.9rem}

/* header */
.site-header{position:sticky;top:0;z-index:50;background:rgba(244,249,249,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--rule)}
.site-header .wrap{display:flex;align-items:center;justify-content:space-between;height:72px;gap:1rem}
.brand{display:flex;flex-direction:column;gap:2px;line-height:1}
.brand:hover{text-decoration:none}
.wordmark{height:30px;width:auto}
.brand-sub{font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.site-nav{display:flex;align-items:center;gap:1.6rem}
.site-nav a{color:var(--petrol);font-weight:600}
.site-nav a.active{color:var(--teal)}
.site-nav a:hover{text-decoration:none;color:var(--teal)}
.site-nav .btn{color:#fff}
.site-nav .btn:hover{color:#fff}
.nav-toggle{display:none;background:none;border:0;width:44px;height:44px;padding:10px;cursor:pointer}
.nav-toggle span{display:block;height:2px;background:var(--petrol);margin:6px 0;border-radius:2px}
@media (max-width:820px){
  .nav-toggle{display:block}
  .site-nav{display:none;position:absolute;left:0;right:0;top:72px;background:var(--bg);flex-direction:column;align-items:flex-start;padding:1rem 1.25rem 1.5rem;border-bottom:1px solid var(--rule);box-shadow:var(--shadow)}
  body.nav-open .site-nav{display:flex}
}

/* hero */
.hero{position:relative;background-size:cover;background-position:center 60%;color:#fff;min-height:560px;display:flex;align-items:center}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(100deg,rgba(18,63,69,.94) 0%,rgba(18,63,69,.78) 45%,rgba(18,63,69,.25) 100%)}
.hero-inner{position:relative;padding:5rem 1.25rem;max-width:1160px}
.hero h1{color:#fff;margin-bottom:.4em}
.hero .lead{color:rgba(255,255,255,.88)}
.hero .eyebrow{color:#8FE3D1}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap;margin-top:1.4rem}

/* grids & cards */
.grid{display:grid;gap:1.5rem}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
@media (max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.grid-3,.grid-4{grid-template-columns:1fr}}
.section-head{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;margin-bottom:1.6rem}
.card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--rule);border-radius:var(--radius);padding:1.5rem;color:var(--ink);box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}
.card:hover{text-decoration:none;transform:translateY(-3px);box-shadow:0 14px 36px rgba(18,63,69,.14)}
.card h3{margin:.6rem 0 .3rem}
.card p{color:var(--ink-2);font-size:.95rem}
.card-cta{margin-top:auto;padding-top:.8rem;font-weight:700;color:var(--teal-dark)}
.card-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.2rem .9rem}
.code{font-size:.7rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.inci{font-size:.85rem;color:var(--muted);margin-bottom:.8rem}
.badges{display:flex;flex-wrap:wrap;gap:.4rem;margin:.6rem 0 .8rem}
.badge{font-size:.72rem;font-weight:700;letter-spacing:.04em;background:var(--bg-tint);color:var(--petrol);padding:.25rem .6rem;border-radius:999px}
.prod-title{display:inline-flex;align-items:baseline;gap:.35em;line-height:1}
.wordmark-inline{height:1.35em;width:auto;display:inline-block;transform:translateY(.18em)}
.prod-num{font-family:var(--head);font-weight:600;color:var(--petrol);font-size:1.7em;letter-spacing:.02em}
h1.prod-title .wordmark-inline{height:1.05em}
h1.prod-title .prod-num{font-size:1.25em}
.post-card{padding:0;overflow:hidden}
.post-thumb{height:170px;background-size:cover;background-position:center}
.post-thumb-default{display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--petrol),var(--teal-dark))}
.post-thumb-default img{height:34px;width:auto;filter:brightness(0) invert(1);opacity:.85}
.post-body{padding:1.4rem 1.5rem 1.5rem;display:flex;flex-direction:column;flex:1}
.post-body time{font-size:.8rem;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}

/* bands */
.band{background:var(--bg-tint);padding:4rem 0}
.band-dark{background:var(--petrol);color:rgba(255,255,255,.85)}
.band-dark h3{color:#fff;font-size:1.05rem}
.band-dark p{font-size:.95rem}
.features h3::before{content:"";display:block;width:34px;height:3px;background:var(--teal);margin-bottom:.8rem;border-radius:2px}

.split{display:grid;grid-template-columns:1.7fr 1fr;gap:3rem;align-items:center}
@media (max-width:900px){.split{grid-template-columns:1fr}}
.photo-card{min-height:360px;border-radius:var(--radius);background-size:cover;background-position:center;box-shadow:var(--shadow)}
.cta{text-align:center}
.cta p{max-width:52ch;margin:0 auto 1.4rem;color:var(--ink-2)}

/* tables */
.table-wrap{overflow-x:auto;margin:0 0 1.2rem}
table{width:100%;border-collapse:collapse;font-size:.95rem;background:#fff}
th,td{padding:.6rem .8rem;text-align:left;border-bottom:1px solid var(--rule);vertical-align:top}
thead th{background:var(--bg-tint);color:var(--petrol);font-family:var(--head);font-weight:600;font-size:.85rem;letter-spacing:.04em}
table.spec th{width:45%;font-weight:600;color:var(--ink-2)}
table.compare td:first-child{font-weight:700;white-space:nowrap}
table.compare td:nth-child(4),table.compare td:nth-child(5),table.compare th:nth-child(4),table.compare th:nth-child(5){white-space:nowrap}

/* page heads */
.page-head{background:var(--bg-tint);padding:3.5rem 0 2.5rem;border-bottom:1px solid var(--rule)}
.page-head h1{margin-bottom:.3em}
.product-head{background:linear-gradient(135deg,var(--bg-tint),#fff)}
.prod-name{font-family:var(--head);font-size:1.4rem;color:var(--ink-2);margin:.2em 0 .1em}

/* datasheet layout */
.datasheet{display:grid;grid-template-columns:260px 1fr;gap:3rem;padding-top:3rem;padding-bottom:4rem;align-items:start}
@media (max-width:900px){.datasheet{grid-template-columns:1fr}}
.ds-facts{position:sticky;top:90px;background:#fff;border:1px solid var(--rule);border-radius:var(--radius);padding:1.4rem;box-shadow:var(--shadow)}
.ds-facts h4{margin-top:0}
.ds-facts h4+h4,.ds-facts dl+h4{margin-top:1.4rem}
.ds-facts dl{margin:0}
.ds-facts dt{font-size:.75rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-top:.7rem}
.ds-facts dd{margin:0;font-weight:700;color:var(--petrol)}
.chips{display:flex;flex-wrap:wrap;gap:.4rem}
.chip{border:1px solid var(--rule);border-radius:999px;padding:.3rem .8rem;font-size:.85rem;font-weight:600;color:var(--petrol)}
.chip:hover{background:var(--bg-tint);text-decoration:none}
.ds-row{display:grid;grid-template-columns:190px 1fr;gap:1.5rem;padding:1.8rem 0;border-top:1px solid var(--rule)}
.ds-row:first-child{border-top:0;padding-top:0}
@media (max-width:700px){.ds-row{grid-template-columns:1fr;gap:.4rem}}
.ds-label{font-size:1rem;color:var(--petrol);margin:0;letter-spacing:.02em}
.ds-body{color:var(--ink-2)}
.ds-body h3{font-size:1rem;color:var(--petrol);margin:1.1em 0 .3em}
.ds-body h3:first-child{margin-top:0}
.ds-body ul{padding-left:1.2rem;margin:0 0 1em}
.ds-body li{margin:.25em 0}
ul.ticks{list-style:none;padding:0}
ul.ticks li{padding-left:1.5rem;position:relative}
ul.ticks li::before{content:"✓";position:absolute;left:0;color:var(--teal);font-weight:700}
ul.two-col{columns:2;column-gap:2rem}
@media (max-width:600px){ul.two-col{columns:1}}
.cta-inline{display:flex;gap:.8rem;flex-wrap:wrap;padding-top:2rem;border-top:1px solid var(--rule)}

/* blog post */
.post{max-width:760px;padding-top:3rem;padding-bottom:3rem}
.post-meta{color:var(--muted);font-size:.9rem}
.post-hero{border-radius:var(--radius);margin:1.5rem 0}
.post-content{font-size:1.06rem;color:var(--ink-2)}
.post-content h2{margin-top:1.8em;font-size:1.5rem}
.post-content h3{margin-top:1.4em}
.post-content ul,.post-content ol{padding-left:1.3rem}
.post-content blockquote{border-left:4px solid var(--teal);margin:1.5em 0;padding:.4em 1.2em;background:#fff;border-radius:0 var(--radius) var(--radius) 0;color:var(--ink)}
.post-content code{background:var(--bg-tint);padding:.1em .4em;border-radius:4px;font-size:.9em}
.post-content img{border-radius:var(--radius)}
.pager{display:flex;justify-content:space-between;gap:1rem;margin-top:3rem;padding-top:1.5rem;border-top:1px solid var(--rule);font-weight:700}

/* contact */
.contact-grid{align-items:start}
.form-card{background:#fff;border:1px solid var(--rule);border-radius:var(--radius);padding:2rem;box-shadow:var(--shadow)}
.form-card label{display:block;font-weight:600;font-size:.9rem;color:var(--petrol);margin-bottom:1rem}
.form-card input,.form-card select,.form-card textarea{display:block;width:100%;margin-top:.35rem;padding:.7rem .8rem;border:1px solid var(--rule);border-radius:8px;font:inherit;color:var(--ink);background:var(--bg)}
.form-card input:focus,.form-card select:focus,.form-card textarea:focus{outline:2px solid var(--teal);border-color:var(--teal)}

/* footer */
.site-footer{background:var(--petrol-2);color:rgba(255,255,255,.8);padding:3.5rem 0 0;margin-top:2rem}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:2.5rem;padding-bottom:2.5rem}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr}}
.footer-logo{height:44px;width:auto;background:#fff;padding:6px 10px;border-radius:8px;margin-bottom:1rem}
.site-footer h4{color:#8FE3D1;margin-top:0}
.site-footer a{color:#fff;display:block;margin:.3rem 0}
.site-footer .inline-links a{display:inline}
.site-footer .footer-grid p{margin:.3rem 0;font-size:.95rem}
.site-footer .muted{color:rgba(255,255,255,.55)}
.footer-bottom{display:flex;justify-content:space-between;gap:1rem;flex-wrap:wrap;border-top:1px solid rgba(255,255,255,.12);padding-top:1.2rem;padding-bottom:1.2rem;font-size:.82rem;color:rgba(255,255,255,.55)}

/* full range */
.product-grid{grid-template-columns:repeat(4,1fr)}
@media (max-width:1000px){.product-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.product-grid{grid-template-columns:1fr}}
.range-note{margin-top:1.5rem;color:var(--ink-2);max-width:70ch}
.range-cat{margin:2rem 0 .6rem;font-size:1.05rem}
table.range td:first-child{font-weight:700;white-space:nowrap}
table.range td.cas{font-size:.85rem;color:var(--muted);white-space:nowrap}
table.range td:last-child{white-space:nowrap;font-weight:600}

/* about */
.stats h3{font-size:2rem;color:#8FE3D1}
.stats h3::before{display:none}
.values .value h3{font-size:1.05rem}
.values .value h3::before{content:"";display:block;width:34px;height:3px;background:var(--teal);margin-bottom:.8rem;border-radius:2px}
.values .value p{color:var(--ink-2);font-size:.95rem}
.person .role{color:var(--teal-dark);font-weight:700;font-size:.85rem;margin-bottom:.6rem}
.goals h3::before{content:"";display:block;width:34px;height:3px;background:var(--teal);margin-bottom:.8rem;border-radius:2px}
.goals h3{font-size:1.05rem}
.goals p{color:var(--ink-2);font-size:.95rem}
.cert h3{color:var(--teal-dark)}
.cta .btn+.btn{margin-left:.6rem}