*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --bg:#eef4f9;
  --bg-card:#ffffff;
  --bg-card-hover:#f6fafd;
  --bg-section:#e4eef6;
  --gold:#b8882e;
  --gold-light:#d4a543;
  --gold-dim:rgba(184,136,46,.08);
  --mint:#1a8a6e;
  --mint-light:#22b88e;
  --mint-dim:rgba(26,138,110,.07);
  --txt:#1a2332;
  --txt2:#4a5568;
  --txt3:#7b8794;
  --line:#06c755;
  --line-h:#05b34c;
  --border:rgba(0,0,0,.06);
  --r:12px;
  --r-sm:8px;
  --max-w:1100px;
  --ease:0.3s cubic-bezier(.4,0,.2,1);
}

html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'DM Sans',system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--txt);line-height:1.6;overflow-x:hidden;-webkit-font-smoothing:antialiased}
[lang="th"] body{font-family:'Noto Sans Thai','Sarabun',system-ui,sans-serif}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap}
.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 20px}
.fade-in{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.fade-in.visible{opacity:1;transform:translateY(0)}

.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(238,244,249,.92);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--border)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:var(--max-w);margin:0 auto;padding:0 20px}
.nav-logo{display:flex;align-items:center;gap:8px}
.nav-logo img{height:36px;width:auto}
.nav-logo span{font-size:1.1rem;font-weight:700;letter-spacing:-.01em}
.nav-logo .en{color:var(--mint)}
.nav-logo .th{color:var(--gold);font-size:.7rem;display:block;line-height:1}
.nav-actions{display:flex;align-items:center;gap:12px}
.lang-switch{display:inline-flex;align-items:center;gap:5px;padding:5px 12px;border-radius:20px;border:1px solid rgba(184,136,46,.25);background:transparent;color:var(--gold);font-size:.75rem;font-weight:500;letter-spacing:.04em;cursor:pointer;transition:all var(--ease);text-transform:uppercase}
.lang-switch:hover{background:var(--gold-dim);border-color:var(--gold)}
.nav-cta{display:inline-flex;align-items:center;gap:6px;padding:8px 18px;border-radius:24px;border:none;background:var(--line);color:#fff;font-size:.82rem;font-weight:600;cursor:pointer;transition:all var(--ease)}
.nav-cta:hover{background:var(--line-h);transform:translateY(-1px)}
.nav-cta svg{width:16px;height:16px}

.hero{min-height:100vh;min-height:100dvh;display:flex;align-items:center;padding:80px 20px 60px;background:linear-gradient(180deg,#e4eef6 0%,var(--bg) 100%)}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;max-width:var(--max-w);margin:0 auto;align-items:center}
.hero-badge{display:inline-block;padding:5px 14px;border-radius:20px;background:var(--mint-dim);color:var(--mint);font-size:.7rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;margin-bottom:20px;border:1px solid rgba(26,138,110,.12)}
.hero h1{font-size:clamp(2rem,4.5vw,3.2rem);font-weight:700;line-height:1.1;letter-spacing:-.03em;margin-bottom:16px;color:var(--txt)}
.hero h1 em{font-style:normal;background:linear-gradient(135deg,var(--gold),var(--gold-light));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:clamp(.9rem,2vw,1.05rem);color:var(--txt2);max-width:460px;line-height:1.7;margin-bottom:28px}
.hero-buttons{display:flex;gap:12px;flex-wrap:wrap}
.hero-img{border-radius:var(--r);overflow:hidden;box-shadow:0 8px 32px rgba(0,0,0,.08);border:1px solid var(--border)}
.hero-img img{width:100%;height:auto;display:block}

.btn-line{display:inline-flex;align-items:center;gap:9px;padding:15px 32px;border-radius:28px;border:none;background:var(--line);color:#fff;font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--ease);box-shadow:0 4px 16px rgba(6,199,85,.2)}
.btn-line:hover{background:var(--line-h);transform:translateY(-2px);box-shadow:0 8px 24px rgba(6,199,85,.25)}
.btn-line svg{width:20px;height:20px;flex-shrink:0}
.btn-ghost{display:inline-flex;align-items:center;gap:7px;padding:13px 24px;border-radius:28px;border:1px solid rgba(26,35,50,.15);background:transparent;color:var(--txt2);font-size:.9rem;font-weight:500;cursor:pointer;transition:all var(--ease)}
.btn-ghost:hover{background:rgba(0,0,0,.03);border-color:rgba(26,35,50,.25)}

.divider{width:100px;height:1px;margin:0 auto;background:linear-gradient(90deg,transparent,var(--gold),transparent)}

.features{padding:100px 20px}
.section-label{text-align:center;font-size:.72rem;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--mint);margin-bottom:10px}
.section-title{text-align:center;font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:700;letter-spacing:-.02em;margin-bottom:56px;color:var(--txt)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;max-width:var(--max-w);margin:0 auto}
.feature-card{padding:28px 24px;border-radius:var(--r);background:var(--bg-card);border:1px solid var(--border);transition:all var(--ease);box-shadow:0 1px 3px rgba(0,0,0,.04)}
.feature-card:hover{background:var(--bg-card-hover);border-color:rgba(26,138,110,.12);transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.06)}
.feature-icon{width:44px;height:44px;border-radius:var(--r-sm);background:var(--mint-dim);display:flex;align-items:center;justify-content:center;margin-bottom:16px;font-size:1.2rem;border:1px solid rgba(26,138,110,.08)}
.feature-card h3{font-size:1rem;font-weight:600;margin-bottom:6px;color:var(--txt)}
.feature-card p{color:var(--txt2);font-size:.85rem;line-height:1.7}

.products{padding:100px 20px;background:var(--bg-section)}
.product-card{display:grid;grid-template-columns:1fr 1fr;gap:48px;max-width:var(--max-w);margin:0 auto;align-items:center}
.product-card+.product-card{margin-top:80px}
.product-card.reverse{direction:rtl}
.product-card.reverse>*{direction:ltr}
.product-images{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.product-images img{border-radius:var(--r-sm);width:100%;height:auto;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.product-images .main{grid-column:1/-1}
.product-info .section-label{text-align:left}
.product-info h2{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:700;letter-spacing:-.02em;margin-bottom:12px;color:var(--txt)}
.product-price{font-size:1.7rem;font-weight:700;color:var(--gold);margin-bottom:4px}
.product-note{color:var(--txt3);font-size:.82rem;margin-bottom:24px}
.product-specs{list-style:none;margin-bottom:28px}
.product-specs li{padding:10px 0;border-bottom:1px solid var(--border);color:var(--txt2);font-size:.88rem;display:flex;align-items:center;gap:9px}
.product-specs li::before{content:'✓';color:var(--mint);font-weight:700;flex-shrink:0}

.how-to{padding:100px 20px}
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;max-width:var(--max-w);margin:0 auto}
.step{text-align:center;padding:20px 16px;background:var(--bg-card);border-radius:var(--r);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.04)}
.step-img{width:100%;aspect-ratio:4/3;object-fit:cover;border-radius:var(--r-sm);margin-bottom:16px}
.step-num{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border-radius:50%;background:var(--gold-dim);color:var(--gold);font-size:.9rem;font-weight:700;margin:0 auto 12px;border:1px solid rgba(184,136,46,.15)}
.step h3{font-size:.95rem;font-weight:600;margin-bottom:6px;color:var(--txt)}
.step p{color:var(--txt2);font-size:.82rem;line-height:1.6}

.testimonials{padding:100px 20px;background:var(--bg-section)}
.testimonial-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;max-width:var(--max-w);margin:0 auto}
.testimonial-card{padding:24px;border-radius:var(--r);background:var(--bg-card);border:1px solid var(--border);box-shadow:0 1px 3px rgba(0,0,0,.04)}
.testimonial-stars{color:var(--gold);font-size:.85rem;margin-bottom:10px;letter-spacing:2px}
.testimonial-text{color:var(--txt2);font-size:.85rem;line-height:1.7;margin-bottom:16px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:12px;border-top:1px solid var(--border);padding-top:14px}
.testimonial-avatar{width:44px;height:44px;border-radius:50%;overflow:hidden;flex-shrink:0;border:2px solid var(--border)}
.testimonial-avatar img{width:100%;height:100%;object-fit:cover}
.testimonial-name{font-size:.82rem;font-weight:600;color:var(--txt)}
.testimonial-role{font-size:.72rem;color:var(--txt3);margin-top:1px}

.gallery{padding:80px 20px}
.gallery-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;max-width:var(--max-w);margin:0 auto}
.gallery-grid img{border-radius:var(--r-sm);width:100%;height:200px;object-fit:cover;box-shadow:0 2px 8px rgba(0,0,0,.06)}

.final-cta{padding:100px 20px;text-align:center;background:linear-gradient(180deg,var(--bg) 0%,#dde9f3 100%)}
.final-cta h2{font-size:clamp(1.5rem,3.5vw,2.2rem);font-weight:700;letter-spacing:-.02em;margin-bottom:14px;color:var(--txt)}
.final-cta p{color:var(--txt2);max-width:440px;margin:0 auto 32px;font-size:.95rem;line-height:1.7}

.footer{padding:36px 20px;text-align:center;border-top:1px solid var(--border);background:var(--bg-section)}
.footer p{color:var(--txt3);font-size:.75rem}
.footer-links{display:flex;justify-content:center;gap:20px;margin-bottom:10px}
.footer-links a{color:var(--txt2);font-size:.78rem;transition:color var(--ease)}
.footer-links a:hover{color:var(--mint)}

@media(max-width:768px){
  .nav-inner{height:56px}
  .nav-cta span{display:none}
  .hero-grid{grid-template-columns:1fr;gap:28px;text-align:center}
  .hero-buttons{justify-content:center}
  .hero-img{order:-1}
  .product-card,.product-card.reverse{grid-template-columns:1fr;gap:28px;direction:ltr}
  .product-info .section-label{text-align:center}
  .product-info{text-align:center}
  .product-specs{text-align:left}
  .features-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr 1fr;gap:16px}
  .gallery-grid{grid-template-columns:1fr 1fr}
  .features,.products,.how-to,.testimonials,.final-cta{padding:64px 16px}
  .btn-line,.btn-ghost{width:100%;max-width:320px;justify-content:center}
}
@media(max-width:480px){
  .steps-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:1fr}
  .container{padding:0 16px}
}
@media print{.nav,.btn-line,.nav-cta,.lang-switch{display:none}}