@import url('https://fonts.googleapis.com/css2?family=Mitr:wght@300;400;500;600;700&family=Poppins:wght@300;400;500;600;700&display=swap');

:root{
  --navy:#30365e;
  --blue:#269bc9;
  --yellow:#ffc33e;
  --orange:#f7933c;
  --teal:#168fa2;
  --purple:#5c478c;
  --text:#252525;
  --header:78px;
  --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--text);font-family:Poppins,Arial,sans-serif;background:#fff}
body,button,input,textarea{font-family:Poppins,Arial,sans-serif}
a{text-decoration:none;color:inherit}
img{display:block;max-width:100%}
.thai{font-family:Mitr,sans-serif}
.container{width:min(var(--max),calc(100% - 48px));margin:auto}

/* ---------- Header ---------- */
.site-header{
  position:fixed;z-index:9999;top:0;left:0;right:0;height:var(--header);
  background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.07);
}
.header-inner{
  height:100%;width:min(1240px,calc(100% - 48px));margin:auto;
  display:flex;align-items:center;justify-content:space-between;
}
.header-logo{width:66px;height:66px;object-fit:contain}
.main-nav ul{display:flex;align-items:center;gap:12px;list-style:none;margin:0;padding:0}
.main-nav a{
  display:flex;align-items:center;justify-content:center;
  min-height:39px;padding:7px 17px;border:1px solid transparent;border-radius:5px;
  font-size:13px;font-weight:500;transition:.22s ease;
}
.main-nav a:hover{color:#159bc7}
.main-nav a.active{border-color:#4bb5d8;color:#159bc7;background:#f7fcfe}
.menu-toggle{display:none}

/* ---------- shared ---------- */
main{padding-top:var(--header)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;
  border:0;border-radius:22px;padding:10px 28px;min-width:112px;
  font-size:12px;font-weight:600;letter-spacing:.3px;
  transition:transform .2s ease,box-shadow .2s ease,filter .2s ease;
}
.btn:hover{transform:translateY(-2px);box-shadow:0 8px 18px rgba(0,0,0,.18);filter:brightness(1.04)}
.btn-blue{background:#4169e1;color:#fff}
.btn-orange{background:var(--orange);color:#fff}
.page-banner{
  min-height:245px;background-position:center;background-size:cover;
  display:flex;align-items:center;justify-content:center;
}
.page-banner h1{margin:0;font-size:42px;letter-spacing:2px;font-weight:400}
.product-banner{background-image:url('images/product_banner.png')}
.review-banner{background-image:url('images/review_banner.png');min-height:300px}
.review-banner h1,.contact-banner h1{color:#fff}
.contact-banner{background-image:url('images/contact_banner.png');min-height:300px}

/* ---------- Home / About ---------- */
.home-about{
  position:relative;overflow:hidden;min-height:690px;
  background:#ffc33e url('images/Home_Section1_BG1.png') center/cover no-repeat;
}
.about-inner{
  position:relative;min-height:690px;width:min(1200px,calc(100% - 48px));margin:auto;
}
.about-copy{
  position:absolute;z-index:2;left:5%;top:50%;transform:translateY(-50%);
  width:43%;color:#fff;
}
.about-copy .label{font-size:18px;line-height:1;margin-bottom:5px}
.about-copy h1{font-size:42px;line-height:1;margin:0 0 22px;font-weight:500}
.about-copy p{
  margin:0 0 25px;font-family:Mitr,sans-serif;font-size:15px;line-height:1.75;
  max-width:500px;
}
.about-kids{
  position:absolute;z-index:1;width:min(64%,770px);right:-35px;bottom:-65px;
}

/* ---------- Home / Product ---------- */
.home-product{
  position:relative;min-height:575px;overflow:hidden;
  background:url('images/Home_Section2_BG.png') center/cover no-repeat;
}
.product-copy{
  width:min(1180px,calc(100% - 48px));height:100%;min-height:575px;margin:auto;
  display:flex;align-items:center;justify-content:flex-end;
}
.product-copy-inner{width:46%;color:#fff;text-align:center;padding:40px 0 35px}
.product-copy h2{
  font-size:36px;line-height:1.17;font-weight:400;margin:0 0 12px;
}
.product-copy p{font-family:Mitr,sans-serif;font-size:15px;line-height:1.7;margin:0 auto 22px;max-width:460px}

/* ---------- Video cards ---------- */
.home-video{background:#fff;padding:65px 0 78px}
.video-heading{text-align:center;margin-bottom:24px}
.video-heading h2{margin:0 0 6px;font-size:31px;font-weight:500;color:var(--navy)}
.video-heading p{margin:0;font-family:Mitr,sans-serif;color:#666;font-size:15px}
.video-card{
  position:relative;width:min(880px,100%);margin:auto;aspect-ratio:16/9;
  overflow:hidden;border-radius:7px;box-shadow:0 12px 35px rgba(0,0,0,.18);
  background:#1e1e1e;
}
.video-card::before{
  content:"";position:absolute;inset:0;
  background-size:cover;background-position:center;
  transition:transform .35s ease,filter .35s ease;
}
.video-card.home-thumb::before{background-image:url('https://img.youtube.com/vi/zZFApl2fS3k/maxresdefault.jpg')}
.video-card.test-thumb::before{background-image:url('https://img.youtube.com/vi/mceW4tanjdM/maxresdefault.jpg')}
.video-card:hover::before{transform:scale(1.025);filter:brightness(.82)}
.video-link{position:absolute;inset:0;display:flex;align-items:center;justify-content:center}
.play-button{
  width:78px;height:55px;border-radius:16px;background:#ff0000;
  position:relative;box-shadow:0 6px 18px rgba(0,0,0,.35);
  transition:transform .2s ease;
}
.play-button::after{
  content:"";position:absolute;left:31px;top:16px;
  border-left:20px solid #fff;border-top:12px solid transparent;border-bottom:12px solid transparent;
}
.video-card:hover .play-button{transform:scale(1.08)}

/* ---------- Product ---------- */
.content-section{padding:72px 0 90px}
.product-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:55px 42px}
.product-card{text-align:center;min-width:0}
.product-image{
  width:100%;aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;
}
.product-image img{width:100%;height:100%;object-fit:contain;transition:transform .25s ease}
.product-card:hover .product-image img{transform:translateY(-5px)}
.product-name{
  margin:17px auto 0;max-width:280px;
  font-family:Mitr,sans-serif;font-size:16px;line-height:1.55;font-weight:400;
}

/* ---------- Review ---------- */
.review-section{padding:72px 0 95px}
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:26px}
.review-item{
  aspect-ratio:1/1;overflow:hidden;background:#f4f4f4;
}
.review-item img{width:100%;height:100%;object-fit:cover}

/* ---------- Test ---------- */
.test-video-section{padding:65px 0 45px;background:#fafafa}
.test-video-title{text-align:center;margin:0 0 24px;font-size:30px;font-weight:500;color:var(--navy)}
.test-report-section{padding:40px 0 90px}
.test-title{
  text-align:center;max-width:920px;margin:0 auto 38px;
  font-family:Mitr,sans-serif;font-size:28px;line-height:1.55;font-weight:500;
}
.report-stack{width:min(800px,100%);margin:auto}
.report-stack img{width:100%;height:auto;margin:0 0 24px}

/* ---------- Contact ---------- */
.contact-section{padding:68px 0 95px}
.contact-layout{
  display:grid;grid-template-columns:1fr 1fr 1fr;gap:30px;
}
.contact-box{
  min-height:190px;padding:32px 22px;text-align:center;
  border:1px solid #ececec;background:#fff;box-shadow:0 7px 25px rgba(0,0,0,.06);
}
.contact-box h2{margin:0 0 12px;color:var(--navy);font-size:19px;font-weight:500}
.contact-box p{margin:0;font-family:Mitr,sans-serif;font-size:14px;line-height:1.9;color:#555}
.contact-box a{color:#218eaf}

/* ---------- Footer ---------- */
.site-footer{background:#fff;border-top:1px solid #eaeaea;padding:42px 0 20px}
.footer-main{display:grid;grid-template-columns:1.2fr 1fr 1.3fr;gap:45px;align-items:start}
.footer-logo{width:78px;height:78px;object-fit:contain}
.footer-title{font-size:14px;font-weight:600;color:var(--navy);margin:0 0 12px}
.footer-links{display:flex;flex-direction:column;gap:8px}
.footer-links a{font-size:13px;color:#555;transition:.2s}
.footer-links a:hover{color:#139ac6}
.social-links{display:grid;grid-template-columns:1fr 1fr;gap:9px 18px}
.social-links a{font-size:13px;color:#555;transition:.2s}
.social-links a:hover{color:#139ac6}
.footer-bottom{
  border-top:1px solid #eee;margin-top:30px;padding-top:15px;
  text-align:center;font-size:11px;color:#999;
}

/* ---------- Mobile ---------- */
@media (max-width:900px){
  :root{--header:96px}
  .site-header{height:var(--header)}
  .header-inner{
    width:100%;height:100%;position:relative;justify-content:center;
  }
  .header-logo{width:72px;height:72px}
  .menu-toggle{
    display:block;position:absolute;left:22px;top:50%;transform:translateY(-50%);
    width:39px;height:39px;opacity:0;cursor:pointer;z-index:3;
  }
  .menu-icon{
    position:absolute;left:22px;top:50%;transform:translateY(-50%);
    width:39px;height:39px;display:flex;align-items:center;justify-content:center;
    font-size:27px;color:#333;z-index:2;pointer-events:none;
  }
  .menu-icon::before{content:'☰'}
  .menu-toggle:checked ~ .menu-icon::before{content:'✕'}
  .main-nav{
    position:absolute;top:var(--header);left:0;right:0;
    background:#fff;box-shadow:0 10px 18px rgba(0,0,0,.08);
    max-height:0;overflow:hidden;transition:max-height .3s ease;
  }
  .menu-toggle:checked ~ .main-nav{max-height:430px}
  .main-nav ul{display:block;padding:10px 20px 16px}
  .main-nav a{margin:3px 0;width:100%;justify-content:flex-start;padding-left:18px}

  .container{width:min(100% - 30px,650px)}
  .home-about{min-height:720px}
  .about-inner{min-height:720px;width:100%;padding:0 28px}
  .about-copy{
    left:28px;top:55px;transform:none;width:56%;
  }
  .about-copy .label{font-size:16px}
  .about-copy h1{font-size:34px;margin-bottom:14px}
  .about-copy p{font-size:12px;line-height:1.55;margin-bottom:20px}
  .about-kids{width:65%;right:-45px;bottom:-30px}

  .home-product{min-height:500px}
  .product-copy{min-height:500px;width:100%;padding:0 20px}
  .product-copy-inner{width:48%;padding-top:20px}
  .product-copy h2{font-size:26px}
  .product-copy p{font-size:12px;line-height:1.55}
  .home-video{padding:48px 15px 58px}

  .product-grid{grid-template-columns:repeat(2,1fr);gap:40px 18px}
  .review-grid{grid-template-columns:repeat(2,1fr);gap:14px}
  .contact-layout{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
  .footer-main > :first-child{grid-column:1/-1}
}

@media (max-width:600px){
  :root{--header:88px}
  .header-logo{width:68px;height:68px}
  .menu-icon{left:18px}
  .menu-toggle{left:18px}
  .page-banner{min-height:165px}
  .page-banner h1{font-size:30px}
  .review-banner,.contact-banner{min-height:205px}

  /* Mobile arrangement follows the supplied PDF example:
     logo centered, menu icon left, About text upper-left,
     children reduced and pushed toward the right/bottom. */
  .home-about{min-height:620px}
  .about-inner{min-height:620px;padding:0 20px}
  .about-copy{left:20px;top:38px;width:59%}
  .about-copy .label{font-size:13px}
  .about-copy h1{font-size:28px}
  .about-copy p{font-size:10.5px;line-height:1.5}
  .about-copy .btn{font-size:10px;padding:8px 20px;min-width:92px}
  .about-kids{width:61%;right:-34px;bottom:-20px}

  .home-product{min-height:390px}
  .product-copy{min-height:390px;padding:0 15px}
  .product-copy-inner{width:49%;padding:15px 0}
  .product-copy h2{font-size:21px}
  .product-copy p{font-size:10.5px;line-height:1.45;margin-bottom:15px}
  .product-copy .btn{font-size:10px;padding:8px 19px;min-width:88px}

  .video-heading h2{font-size:25px}
  .video-heading p{font-size:12px}
  .play-button{width:61px;height:43px;border-radius:12px}
  .play-button::after{left:24px;top:12px;border-left-width:16px;border-top-width:9px;border-bottom-width:9px}

  .content-section{padding:50px 0 65px}
  .product-grid{grid-template-columns:1fr 1fr;gap:28px 12px}
  .product-name{font-size:13px;line-height:1.45;margin-top:10px}
  .review-section{padding:48px 0 65px}
  .review-grid{grid-template-columns:1fr 1fr;gap:10px}

  .test-video-section{padding:48px 15px 30px}
  .test-video-title{font-size:24px}
  .test-report-section{padding:25px 15px 60px}
  .test-title{font-size:21px;line-height:1.5;margin-bottom:24px}

  .contact-section{padding:50px 0 65px}
  .contact-box{min-height:0;padding:26px 18px}

  .footer-main{grid-template-columns:1fr;gap:25px}
  .footer-main > :first-child{grid-column:auto}
  .social-links{grid-template-columns:1fr 1fr}
}

@media (max-width:390px){
  .home-about{min-height:600px}
  .about-inner{min-height:600px}
  .about-copy{width:61%}
  .about-copy p{font-size:9.5px}
  .about-kids{width:66%;right:-43px}
  .home-product{min-height:360px}
  .product-copy{min-height:360px}
  .product-copy-inner{width:52%}
  .product-copy h2{font-size:19px}
}