:root{
  --ink:#1e2226;--ink-2:#3a4047;--muted:#6b7279;--line:#e3e1dc;
  --paper:#f6f4f0;--white:#fff;--concrete:#2b2f33;--concrete-2:#3d4247;
  --accent:#f28c28;--accent-d:#d9711a;--radius:14px;
  --shadow:0 10px 30px rgba(20,24,28,.08);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Sarabun",system-ui,sans-serif;color:var(--ink);background:var(--paper);line-height:1.8;font-size:17px}
h1,h2,h3,h4,.brand{font-family:"Prompt","Sarabun",sans-serif;line-height:1.3;font-weight:600}
img{max-width:100%;display:block}
a{color:inherit}
.container{width:min(1180px,100% - 32px);margin-inline:auto}

/* Top bar + nav */
.topbar{background:var(--concrete);color:#cfd3d7;font-size:14px}
.topbar .container{display:flex;gap:20px;justify-content:space-between;flex-wrap:wrap;padding:8px 0}
.topbar a{text-decoration:none}
.topbar span{white-space:nowrap}
header.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
header.nav .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand .logo{width:44px;height:44px;border-radius:10px;background:var(--concrete);color:var(--accent);display:grid;place-items:center;font-weight:800;font-size:20px}
.brand small{display:block;font-family:"Sarabun";font-weight:400;font-size:12px;color:var(--muted);letter-spacing:.04em}
.brand b{font-size:18px}
nav.menu ul{display:flex;gap:4px;list-style:none}
nav.menu a{display:block;padding:10px 14px;border-radius:8px;text-decoration:none;font-family:"Prompt";font-size:15px;color:var(--ink-2)}
nav.menu a:hover{background:#f1efea}
nav.menu a.active{color:var(--accent-d);background:#fdf1e5}
.burger{display:none;background:none;border:0;width:44px;height:44px;cursor:pointer}
.burger span{display:block;width:24px;height:2px;background:var(--ink);margin:5px auto;transition:.2s}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 24px;border-radius:999px;font-family:"Prompt";font-weight:500;text-decoration:none;border:2px solid transparent;cursor:pointer;font-size:16px;transition:.2s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent-d)}
.btn-ghost{border-color:rgba(255,255,255,.7);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.12)}
.btn-dark{background:var(--concrete);color:#fff}
.btn-line{background:#06c755;color:#fff}

/* Hero banner */
.hero{position:relative;min-height:640px;display:flex;align-items:center;color:#fff;
  background:linear-gradient(90deg,rgba(20,23,26,.88) 0%,rgba(20,23,26,.55) 55%,rgba(20,23,26,.25) 100%),
  url("https://images.unsplash.com/photo-1504307651254-35680f356dfd?auto=format&fit=crop&w=2000&q=80") center/cover,
  url("../images/hero.svg") center/cover}
.hero .eyebrow{display:inline-block;background:var(--accent);padding:4px 14px;border-radius:999px;font-size:14px;font-family:"Prompt";margin-bottom:18px}
.hero h1{font-size:clamp(34px,5.4vw,60px);max-width:760px;margin-bottom:18px}
.hero h1 em{font-style:normal;color:var(--accent)}
.hero p{max-width:620px;font-size:19px;color:#e7e9eb;margin-bottom:30px}
.hero .actions{display:flex;gap:12px;flex-wrap:wrap}
.hero-stats{position:absolute;bottom:0;left:0;right:0;transform:translateY(50%)}
.hero-stats .grid{background:#fff;color:var(--ink);border-radius:var(--radius);box-shadow:var(--shadow);display:grid;grid-template-columns:repeat(4,1fr)}
.hero-stats .item{padding:22px 24px;border-right:1px solid var(--line)}
.hero-stats .item:last-child{border:0}
.hero-stats b{display:block;font-family:"Prompt";font-size:18px;color:var(--concrete)}
.hero-stats span{font-size:14px;color:var(--muted)}

/* Page header (inner pages) */
.page-head{color:#fff;padding:110px 0 80px;position:relative;background-size:cover;background-position:center}
.page-head h1{font-size:clamp(30px,4.5vw,48px)}
.page-head p{color:#dfe2e5;max-width:640px;margin-top:8px}
.crumbs{font-size:14px;color:#c9cdd1;margin-bottom:10px}
.crumbs a{text-decoration:none;color:var(--accent)}

/* Sections */
section{padding:90px 0}
.section-alt{background:#fff}
.section-dark{background:var(--concrete);color:#e9ebed}
.kicker{font-family:"Prompt";color:var(--accent-d);font-size:14px;letter-spacing:.12em;text-transform:uppercase;margin-bottom:8px;display:block}
.section-dark .kicker{color:var(--accent)}
.title{font-size:clamp(26px,3.4vw,38px);margin-bottom:16px}
.lead{color:var(--muted);max-width:760px;font-size:18px}
.section-dark .lead{color:#b9bec3}
.center{text-align:center}.center .lead{margin-inline:auto}
.prose p{margin-bottom:16px}
.prose h3{margin:26px 0 10px;font-size:22px}
.prose ul{margin:0 0 16px 22px}
.prose li{margin-bottom:6px}

.split{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
.split.rev>:first-child{order:2}
.photo{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);position:relative;background:#c9c6c0}
.photo img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3}
.photo .tag{position:absolute;left:16px;bottom:16px;background:rgba(20,23,26,.82);color:#fff;padding:6px 14px;border-radius:999px;font-size:14px}

/* Cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:40px}
.card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);display:flex;flex-direction:column;border:1px solid var(--line)}
.card img{aspect-ratio:16/10;object-fit:cover;width:100%}
.card .body{padding:24px;flex:1;display:flex;flex-direction:column}
.card h3{font-size:21px;margin-bottom:8px}
.card p{color:var(--muted);font-size:16px;flex:1}
.card .more{margin-top:16px;font-family:"Prompt";color:var(--accent-d);text-decoration:none;font-weight:500}

.features{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-top:40px}
.feature{background:var(--concrete-2);border-radius:var(--radius);padding:28px 24px;border:1px solid rgba(255,255,255,.06)}
.feature .ic{width:48px;height:48px;border-radius:12px;background:rgba(242,140,40,.15);color:var(--accent);display:grid;place-items:center;margin-bottom:16px}
.feature h3{font-size:19px;margin-bottom:8px;color:#fff}
.feature p{font-size:15.5px;color:#b9bec3}

.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:16px;margin-top:40px;counter-reset:s}
.step{background:#fff;border-radius:var(--radius);padding:24px 20px;border:1px solid var(--line);position:relative}
.step::before{counter-increment:s;content:"0" counter(s);font-family:"Prompt";font-weight:700;font-size:30px;color:var(--accent);display:block;margin-bottom:6px}
.step h4{font-size:17px;margin-bottom:6px}
.step p{font-size:15px;color:var(--muted)}

.gallery{display:grid;grid-template-columns:2fr 1fr 1fr;grid-template-rows:240px 240px;gap:16px;margin-top:40px}
.gallery .photo:first-child{grid-row:span 2}
.gallery .photo img{aspect-ratio:auto;height:100%}

.cta{background:linear-gradient(120deg,var(--accent),#e0631a);color:#fff;border-radius:22px;padding:48px;display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap}
.cta h2{font-size:clamp(24px,3vw,34px)}
.cta p{opacity:.92}
.cta .btn-dark:hover{background:#111}

.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px 22px;margin-bottom:12px}
.faq summary{cursor:pointer;font-family:"Prompt";font-weight:500;font-size:17px;list-style:none;display:flex;justify-content:space-between;gap:12px}
.faq summary::after{content:"+";color:var(--accent);font-size:22px;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq details p{margin-top:10px;color:var(--ink-2)}

/* Product detail */
.product{display:grid;grid-template-columns:1fr 1.2fr;gap:44px;align-items:start;padding:44px 0;border-bottom:1px solid var(--line)}
.product:last-child{border:0}
.product h2{font-size:28px;margin-bottom:10px}
.spec{width:100%;border-collapse:collapse;margin:16px 0;font-size:15.5px;background:#fff;border-radius:10px;overflow:hidden}
.spec th,.spec td{padding:10px 14px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.spec th{background:#f1efea;font-family:"Prompt";font-weight:500;width:38%}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:12px 0}
.chip{background:#fdf1e5;color:var(--accent-d);padding:4px 12px;border-radius:999px;font-size:14px}
.subnav{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}
.subnav a{background:rgba(255,255,255,.12);color:#fff;text-decoration:none;padding:8px 16px;border-radius:999px;font-size:15px}
.subnav a:hover{background:var(--accent)}

/* Values / timeline */
.values{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:36px}
.value{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:28px}
.value h3{font-size:20px;margin-bottom:8px}
.value p{color:var(--muted);font-size:16px}
.mv{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:30px}
.mv .box{background:var(--concrete);color:#e9ebed;border-radius:var(--radius);padding:32px}
.mv .box h3{color:var(--accent);margin-bottom:10px;font-size:22px}
.info-table{width:100%;border-collapse:collapse;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.info-table th,.info-table td{padding:14px 20px;border-bottom:1px solid var(--line);text-align:left}
.info-table th{width:34%;background:#f7f5f1;font-family:"Prompt";font-weight:500}

/* Privacy */
.policy{display:grid;grid-template-columns:260px 1fr;gap:48px;align-items:start}
.toc{position:sticky;top:96px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.toc h4{margin-bottom:10px}
.toc ol{margin-left:18px;font-size:15px}
.toc a{text-decoration:none;color:var(--ink-2)}
.toc a:hover{color:var(--accent-d)}
.policy .prose h2{font-size:24px;margin:34px 0 12px;scroll-margin-top:96px}
.policy .prose h2:first-child{margin-top:0}
.note{background:#fdf1e5;border-left:4px solid var(--accent);padding:16px 20px;border-radius:8px;margin:18px 0}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.15fr;gap:32px}
.contact-cards{display:grid;gap:14px}
.ccard{display:flex;gap:16px;align-items:flex-start;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px;text-decoration:none}
.ccard .ic{flex:none;width:46px;height:46px;border-radius:12px;background:var(--concrete);color:var(--accent);display:grid;place-items:center}
.ccard b{font-family:"Prompt";display:block}
.ccard span{color:var(--muted);font-size:15.5px}
form.quote{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow)}
form.quote h3{font-size:24px;margin-bottom:6px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}
label{display:block;font-size:15px;font-family:"Prompt";margin:14px 0 6px}
input,select,textarea{width:100%;padding:12px 14px;border:1px solid #d6d3cc;border-radius:10px;font:inherit;font-size:16px;background:#fbfaf8}
input:focus,select:focus,textarea:focus{outline:2px solid var(--accent);border-color:transparent}
textarea{min-height:130px;resize:vertical}
.consent{display:flex;gap:10px;align-items:flex-start;font-size:14.5px;color:var(--muted);margin:16px 0}
.consent input{width:auto;margin-top:5px}
.map{border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);margin-top:40px;border:1px solid var(--line)}
.map iframe{width:100%;height:420px;border:0;display:block}

/* Footer */
footer{background:#1a1d20;color:#aeb3b8;padding:64px 0 0;font-size:15.5px}
footer .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
footer h4{color:#fff;margin-bottom:14px;font-size:17px}
footer ul{list-style:none}
footer li{margin-bottom:8px}
footer a{text-decoration:none}
footer a:hover{color:var(--accent)}
footer .brand b{color:#fff}
footer .bottom{border-top:1px solid #2c3034;margin-top:44px;padding:20px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:14px}

.float-line{position:fixed;right:18px;bottom:18px;z-index:60;background:#06c755;color:#fff;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;box-shadow:0 8px 20px rgba(0,0,0,.25);text-decoration:none;font-family:"Prompt";font-weight:700;font-size:14px}

.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* Responsive */
@media (max-width:1024px){
  .features{grid-template-columns:repeat(2,1fr)}
  .steps{grid-template-columns:repeat(3,1fr)}
  footer .cols{grid-template-columns:1fr 1fr}
}
@media (max-width:860px){
  nav.menu{position:fixed;inset:72px 0 auto 0;background:#fff;border-bottom:1px solid var(--line);display:none;padding:10px 16px 18px}
  nav.menu.open{display:block}
  nav.menu ul{flex-direction:column}
  .burger{display:block}
  .split,.product,.contact-grid,.policy,.mv{grid-template-columns:1fr}
  .split.rev>:first-child{order:0}
  .cards,.values{grid-template-columns:1fr 1fr}
  .hero{min-height:0;padding-top:70px}
  .hero{flex-direction:column;align-items:stretch;padding-bottom:0!important}
  .hero-stats{position:static;transform:none;margin-top:40px}
  .hero-stats .grid{grid-template-columns:1fr 1fr;border-radius:var(--radius) var(--radius) 0 0}
  .hero + section{padding-top:64px!important}
  .hero-stats .item:nth-child(2){border-right:0}
  .hero-stats .item:nth-child(-n+2){border-bottom:1px solid var(--line)}
  .gallery{grid-template-columns:1fr 1fr;grid-template-rows:auto}
  .gallery .photo:first-child{grid-column:span 2;grid-row:auto}
  .gallery .photo img{aspect-ratio:4/3}
  .toc{position:static}
}
@media (max-width:560px){
  body{font-size:16px}
  section{padding:64px 0}
  .cards,.values,.features,.steps,.row{grid-template-columns:1fr}
  .topbar .container{justify-content:center}
  .topbar .hide-sm{display:none}
  .cta{padding:32px 24px}
  footer .cols{grid-template-columns:1fr}
  .hero-stats .item{padding:16px}
}