:root{
  --navy:#062a55;
  --navy2:#021d39;
  --cyan:#09a9b8;
  --cyan2:#16bfc0;
  --muted:#556d84;
  --line:#e3edf2;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Arial,"Noto Sans Thai",Tahoma,sans-serif;color:var(--navy);background:#fff}
a{text-decoration:none;color:inherit}
img{display:block;width:100%}
.container{width:min(900px,88%);margin:auto}

/* header */
.header{height:69px;background:#fff;border-bottom:1px solid #edf2f5;position:sticky;top:0;z-index:50}
.nav{height:100%;display:flex;align-items:center}
.brand,.footer-brand{display:flex;align-items:center;gap:10px;font-weight:900}
.brand{min-width:240px;font-size:17px}
.mark{width:38px;height:33px;position:relative;display:inline-block}
.mark span{position:absolute;width:27px;height:9px;border:5px solid var(--cyan);border-right:0;border-radius:8px;transform:skewX(-24deg)}
.mark span:nth-child(1){top:1px;left:7px}
.mark span:nth-child(2){top:11px;left:2px;border-color:#0873a6}
.mark span:nth-child(3){top:21px;left:8px}
.links{height:100%;display:flex;gap:40px;align-items:center;margin:auto;font-weight:800;font-size:13px}
.links a{height:100%;display:flex;align-items:center;border-bottom:3px solid transparent}
.links a.active,.links a:hover{color:var(--cyan);border-color:var(--cyan)}
.phone{border:1.5px solid var(--cyan);color:#087b9d;border-radius:22px;padding:9px 17px;font-size:13px;font-weight:800}
.menu-button{display:none;border:0;background:transparent;font-size:24px}

/* hero */
.hero{background:linear-gradient(90deg,#fff 0%,#f7fafc 47%,#edf5f8 100%)}
.hero-grid{height:342px;display:grid;grid-template-columns:48% 52%}
.hero-copy{display:flex;flex-direction:column;justify-content:center}
.hero-copy h1{font-size:35px;line-height:1.17;margin:0 0 18px;letter-spacing:-.8px}
.hero-copy h1 em{font-style:normal;color:var(--cyan)}
.hero-copy p{font-size:13px;margin:0;color:#14395d}
.hero-actions{display:flex;gap:17px;margin-top:27px}
.button{height:43px;padding:0 25px;border-radius:7px;display:inline-flex;align-items:center;justify-content:center;font-size:13px;font-weight:800;gap:8px}
.primary{background:linear-gradient(90deg,#0571aa,#0bb8b6);color:#fff}
.outline{border:1.4px solid var(--cyan);color:#087a9d;background:#fff}
.hero-image{height:100%;background:url("assets/hero.jpg") center/cover no-repeat;position:relative}
.hero-image:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#f7fafc 0%,rgba(247,250,252,.28) 12%,transparent 25%)}

/* section */
.services,.products,.portfolio{padding:39px 0}
.section-title{text-align:center;margin-bottom:27px}
.section-title h2{font-size:22px;margin:0;font-weight:900}
.section-title span{display:block;width:43px;height:3px;background:var(--cyan2);border-radius:3px;margin:8px auto 0}

/* services */
.service-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:11px}
.service-card{height:145px;border:1px solid var(--line);border-radius:8px;background:#fff;box-shadow:0 6px 20px rgba(3,42,79,.06);display:flex;align-items:center;justify-content:center;flex-direction:column}
.service-card svg{width:40px;height:40px;fill:none;stroke:#078dad;stroke-width:3;stroke-linecap:round;stroke-linejoin:round;margin-bottom:8px}
.service-card h3{font-size:14px;margin:0 0 3px}
.service-card p{font-size:13px;color:#536a80;margin:0}

/* products */
.products{padding-top:4px}
.product-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.product-card{background:#f4f8fb;border-radius:7px;overflow:hidden;box-shadow:0 7px 20px rgba(3,42,79,.05)}
.product-image{height:175px;overflow:hidden;background:#f2f7fa}
.product-image img{height:100%;object-fit:cover}
.product-copy{padding:14px 16px 17px}
.product-copy h3{font-size:13px;margin:0 0 12px;font-weight:900}
.product-copy p{font-size:12px;margin:0;color:var(--cyan);font-weight:800}

/* portfolio */
.portfolio{padding-top:3px;padding-bottom:36px}
.portfolio-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:13px}
.portfolio-card{height:118px;overflow:hidden;border-radius:7px;position:relative;background:#052541}
.portfolio-card img{height:100%;object-fit:cover;filter:brightness(.72)}
.portfolio-card:after{content:"";position:absolute;inset:0;background:linear-gradient(0deg,rgba(0,20,40,.42),transparent 55%)}
.portfolio-card b{position:absolute;z-index:2;left:11px;bottom:10px;background:rgba(0,0,0,.75);color:#fff;border-radius:14px;padding:5px 9px;font-size:10px}
.center{text-align:center;margin-top:24px}
.portfolio-button{height:36px;min-width:160px}

/* cta */
.cta{background:linear-gradient(100deg,#062d69,#008ca7);color:#fff;padding:25px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:25px}
.cta h2{font-size:21px;margin:0 0 5px}
.cta p{font-size:12px;margin:0;color:#e1f3f7}
.cta-actions{display:flex;gap:15px}
.white{background:#fff;color:#087a9d}
.transparent{color:#fff;border:1px solid #fff}

/* footer */
.footer{background:linear-gradient(105deg,#06284d,#03192f);color:#d4e0ea;padding:31px 0 14px}
.footer-grid{display:grid;grid-template-columns:1.15fr 1.2fr .65fr 1fr;gap:27px}
.footer-brand{color:#fff;font-size:18px;margin-bottom:11px}
.footer-mark{transform:scale(.88);transform-origin:left center}
.footer h4{color:#fff;font-size:12px;margin:4px 0 10px}
.footer p,.footer a{font-size:10.5px;line-height:1.65}
.footer-grid>div>a:not(.footer-brand){display:block;margin:3px 0}
.socials{display:flex;gap:6px;margin-top:10px}
.socials a{display:flex!important;align-items:center;justify-content:center;width:23px;height:23px;border-radius:50%;background:#087697;color:#fff;font-weight:800}
.copyright{text-align:center;border-top:1px solid rgba(255,255,255,.1);margin-top:20px;padding-top:12px;font-size:10px}

@media(max-width:900px){
  .container{width:92%}
  .brand{min-width:auto;margin-right:auto}
  .phone,.links{display:none}
  .menu-button{display:block}
  .links.open{display:flex;position:absolute;top:69px;left:0;right:0;background:#fff;flex-direction:column;gap:0;height:auto;padding:7px 5% 13px;box-shadow:0 12px 24px #0001}
  .links.open a{width:100%;height:auto;padding:12px 0;border-bottom:1px solid #edf2f5}
  .hero-grid{height:auto;grid-template-columns:1fr}
  .hero-copy{padding:45px 0 30px}
  .hero-image{height:300px}
  .service-grid{grid-template-columns:repeat(3,1fr)}
  .product-grid{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:580px){
  .hero-copy h1{font-size:32px}
  .hero-image{height:230px}
  .service-grid{grid-template-columns:repeat(2,1fr)}
  .product-grid,.portfolio-grid{grid-template-columns:1fr}
  .product-image{height:220px}
  .portfolio-card{height:180px}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{flex-wrap:wrap}
  .footer-grid{grid-template-columns:1fr}
}
<a href="/" class="navbar-logo">
  <img
    src="images/ctk-logo.jpg"
    alt="CTK Success"
    style="width: 56px; height: 56px; object-fit: cover; border-radius: 8px;"
  >
  .navbar-logo {
  width: 70px !important;
  height: 70px !important;
  display: flex;
  align-items: center;
  overflow: hidden;
  flex-shrink: 0;
}

.navbar-logo img {
  width: 70px !important;
  height: 70px !important;
  max-width: 70px !important;
  object-fit: contain;
  display: block;
}
</a>