/* ====================== RESET & BASE ====================== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --blue:#0a66c2;
  --blue-dark:#084a8c;
  --teal:#0fb5ba;
  --navy:#0c2740;
  --orange:#ff6a00;
  --orange-dark:#e85d00;
  --line:#06c755;
  --fb:#1877f2;
  --bg:#f4f8fc;
  --text:#1f2d3d;
  --muted:#5b6b7b;
  --white:#fff;
  --radius:16px;
  --shadow:0 10px 30px rgba(12,39,64,.10);
  --shadow-sm:0 4px 14px rgba(12,39,64,.08);
}
html{scroll-behavior:smooth;scroll-padding-top:80px}
body{
  font-family:'Prompt',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  color:var(--text);background:var(--bg);line-height:1.7;font-size:16px;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container{width:100%;max-width:1160px;margin:0 auto;padding:0 20px}
.container--narrow{max-width:820px}

/* ====================== BUTTONS ====================== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 24px;border-radius:50px;font-weight:600;font-size:15px;
  border:none;cursor:pointer;transition:.25s;font-family:inherit;white-space:nowrap;
}
.btn--lg{padding:16px 30px;font-size:17px}
.btn--block{display:flex;width:100%;margin-top:10px}
.btn--primary{background:linear-gradient(135deg,var(--orange),var(--orange-dark));color:#fff;box-shadow:0 8px 20px rgba(255,106,0,.35)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,106,0,.45)}
.btn--line{background:var(--line);color:#fff;box-shadow:0 8px 20px rgba(6,199,85,.3)}
.btn--line:hover{transform:translateY(-2px);filter:brightness(1.05)}
.btn--outline{background:transparent;color:var(--blue);border:2px solid var(--blue)}
.btn--outline:hover{background:var(--blue);color:#fff}

/* ====================== TOP BAR ====================== */
.topbar{background:var(--navy);color:#cfe3f5;font-size:13.5px}
.topbar__inner{display:flex;justify-content:center;gap:26px;align-items:center;height:38px}
.topbar__item{display:inline-flex;align-items:center;gap:5px}
.topbar a.topbar__item:hover{color:#fff}

/* ====================== HEADER ====================== */
.header{position:sticky;top:0;z-index:900;background:rgba(255,255,255,.96);backdrop-filter:blur(8px);box-shadow:var(--shadow-sm)}
.header__inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:10px}
.brand__icon{font-size:30px;animation:spin 7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__text strong{font-size:20px;color:var(--blue);font-weight:800}
.brand__text small{font-size:11px;color:var(--muted);letter-spacing:.5px}
.brand--light .brand__text strong{color:#fff}
.brand--light .brand__text small{color:#9fb6cc}

.nav{display:flex;align-items:center;gap:6px}
.nav a{padding:9px 14px;border-radius:8px;font-weight:500;font-size:15px;color:var(--text);transition:.2s}
.nav a:hover{background:var(--bg);color:var(--blue)}
.nav .nav__cta{background:var(--blue);color:#fff;font-weight:600}
.nav .nav__cta:hover{background:var(--blue-dark);color:#fff}
.nav__toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--blue)}

/* ====================== HERO ====================== */
.hero{position:relative;overflow:hidden;color:#fff;padding:60px 0 70px;
  background:linear-gradient(100deg,rgba(8,74,140,.94) 0%,rgba(10,102,194,.86) 38%,rgba(15,181,186,.50) 72%,rgba(15,181,186,.30) 100%),url("../images/chang-som-khrueang-sak-pha-hero.jpg") center right/cover no-repeat;
  background-color:#0a66c2}
.hero__bubbles{position:absolute;inset:0;pointer-events:none}
.hero__bubbles span{position:absolute;bottom:-60px;border-radius:50%;background:rgba(255,255,255,.12);animation:rise linear infinite}
.hero__bubbles span:nth-child(1){left:8%;width:60px;height:60px;animation-duration:14s}
.hero__bubbles span:nth-child(2){left:25%;width:30px;height:30px;animation-duration:11s;animation-delay:2s}
.hero__bubbles span:nth-child(3){left:48%;width:80px;height:80px;animation-duration:18s;animation-delay:1s}
.hero__bubbles span:nth-child(4){left:67%;width:24px;height:24px;animation-duration:9s}
.hero__bubbles span:nth-child(5){left:80%;width:50px;height:50px;animation-duration:15s;animation-delay:3s}
.hero__bubbles span:nth-child(6){left:92%;width:36px;height:36px;animation-duration:12s;animation-delay:1.5s}
@keyframes rise{to{transform:translateY(-110vh);opacity:0}}

.hero__inner{position:relative;z-index:2;display:grid;grid-template-columns:1.4fr .9fr;gap:48px;align-items:center}
.hero__badge{display:inline-block;background:rgba(255,255,255,.18);border:1px solid rgba(255,255,255,.35);padding:7px 16px;border-radius:50px;font-size:14px;font-weight:500;margin-bottom:18px}
.hero__title{font-size:48px;font-weight:800;line-height:1.18;margin-bottom:16px}
.hero__title .hl{color:#ffd84d}
.hero__sub{font-size:18px;opacity:.95;margin-bottom:22px;max-width:560px}
.hero__points{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:28px;max-width:560px}
.hero__points li{font-size:15.5px;font-weight:500}
.hero__cta{display:flex;gap:14px;flex-wrap:wrap}
.hero__phone2{margin-top:14px;font-size:15px;opacity:.95}
.hero__phone2 a{font-weight:700;border-bottom:1px dashed rgba(255,255,255,.6)}

.hero__card{background:#fff;color:var(--text);border-radius:22px;padding:30px 26px;box-shadow:0 24px 50px rgba(8,30,55,.3);text-align:center}
.hero__card-icon{font-size:46px;animation:spin 6s linear infinite;display:inline-block}
.hero__card h3{font-size:24px;color:var(--blue);margin:6px 0 8px;font-weight:800}
.hero__card p{color:var(--muted);font-size:15px;margin-bottom:18px}
.hero__trust{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:18px;font-size:12.5px;color:var(--muted)}
.hero__trust span{background:var(--bg);padding:6px 10px;border-radius:50px}

/* ====================== STATS ====================== */
.stats{background:var(--navy);color:#fff}
.stats__grid{display:grid;grid-template-columns:repeat(4,1fr);text-align:center}
.stats__item{padding:22px 10px;border-right:1px solid rgba(255,255,255,.1)}
.stats__item:last-child{border-right:none}
.stats__item strong{display:block;font-size:22px;font-weight:800;color:#ffd84d}
.stats__item span{font-size:13.5px;color:#bcd2e6}

/* ====================== SECTIONS ====================== */
.section{padding:72px 0}
.section--alt{background:#fff}
.section__head{text-align:center;max-width:680px;margin:0 auto 44px}
.section__tag{display:inline-block;background:rgba(15,181,186,.12);color:var(--teal);font-weight:600;padding:6px 16px;border-radius:50px;font-size:14px;margin-bottom:12px}
.section__head h2{font-size:33px;font-weight:800;color:var(--navy);line-height:1.3;margin-bottom:12px}
.section__head p{color:var(--muted);font-size:16.5px}

/* ====================== CARDS (services) ====================== */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{background:#fff;border-radius:var(--radius);padding:30px 26px;box-shadow:var(--shadow-sm);border:1px solid #eef3f8;transition:.28s}
.section--alt .card{background:var(--bg)}
.card:hover{transform:translateY(-6px);box-shadow:var(--shadow);border-color:var(--teal)}
.card__icon{font-size:42px;width:74px;height:74px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(10,102,194,.1),rgba(15,181,186,.12));border-radius:18px;margin-bottom:16px}
.card h3{font-size:20px;color:var(--navy);margin-bottom:8px;font-weight:700}
.card p{color:var(--muted);font-size:15px}

/* ====================== WHY ====================== */
.why{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.why__item{display:flex;gap:14px;background:var(--bg);padding:22px;border-radius:var(--radius);border:1px solid #eef3f8}
.section--alt .why__item{background:#f4f8fc}
.why__item>span{font-size:34px;flex-shrink:0}
.why__item strong{display:block;font-size:17.5px;color:var(--navy);margin-bottom:4px}
.why__item p{color:var(--muted);font-size:14.5px;line-height:1.6}

/* ====================== BRANDS ====================== */
.brands{display:flex;flex-wrap:wrap;justify-content:center;gap:14px}
.brands span{background:#fff;border:1px solid #e3edf6;color:var(--navy);font-weight:600;padding:13px 26px;border-radius:50px;box-shadow:var(--shadow-sm);font-size:16px;transition:.2s}
.brands span:hover{background:var(--blue);color:#fff;transform:translateY(-3px)}

/* ====================== STEPS ====================== */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;counter-reset:step}
.step{background:#fff;border-radius:var(--radius);padding:28px 22px;text-align:center;box-shadow:var(--shadow-sm);position:relative}
.step__no{width:52px;height:52px;border-radius:50%;background:linear-gradient(135deg,var(--orange),var(--orange-dark));color:#fff;font-weight:800;font-size:22px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;box-shadow:0 8px 18px rgba(255,106,0,.35)}
.step h3{font-size:18px;color:var(--navy);margin-bottom:6px}
.step p{color:var(--muted);font-size:14.5px}

/* ====================== ARTICLES ====================== */
.articles{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm);border:1px solid #eef3f8;transition:.28s;display:flex;flex-direction:column}
.post:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.post__cover{height:130px;display:flex;align-items:center;justify-content:center;font-size:56px;background:linear-gradient(135deg,#0a66c2,#0fb5ba)}
.post__body{padding:22px 22px 24px;display:flex;flex-direction:column;flex:1}
.post__body h3{font-size:18.5px;color:var(--navy);margin-bottom:8px;line-height:1.4}
.post__body p{color:var(--muted);font-size:14.5px;flex:1;margin-bottom:14px}
.post__link{color:var(--blue);font-weight:600;font-size:15px}
.post__link:hover{color:var(--orange)}

/* ====================== FAQ ====================== */
.faq{display:flex;flex-direction:column;gap:14px}
.faq__item{background:#fff;border:1px solid #e3edf6;border-radius:14px;padding:4px 20px;box-shadow:var(--shadow-sm)}
.faq__item summary{cursor:pointer;font-weight:600;font-size:17px;color:var(--navy);padding:16px 0;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:10px}
.faq__item summary::-webkit-details-marker{display:none}
.faq__item summary::after{content:"+";font-size:24px;color:var(--teal);font-weight:400;transition:.2s}
.faq__item[open] summary::after{transform:rotate(45deg)}
.faq__item p{color:var(--muted);padding:0 0 18px;font-size:15.5px}

/* ====================== CTA BANNER ====================== */
.cta-banner{background:linear-gradient(135deg,var(--navy),var(--blue-dark));color:#fff;padding:54px 0}
.cta-banner__inner{display:flex;justify-content:space-between;align-items:center;gap:30px;flex-wrap:wrap}
.cta-banner h2{font-size:28px;font-weight:800;margin-bottom:6px}
.cta-banner p{opacity:.9;font-size:16px}
.cta-banner__btns{display:flex;gap:14px;flex-wrap:wrap}

/* ====================== CONTACT ====================== */
.contact{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.contact__card{background:#fff;border:1px solid #e3edf6;border-radius:var(--radius);padding:26px;text-align:center;box-shadow:var(--shadow-sm);transition:.25s;display:flex;flex-direction:column;align-items:center}
.contact__card:hover:not(.contact__card--static){transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--teal)}
.contact__icon{font-size:38px;margin-bottom:10px}
.contact__card strong{font-size:18px;color:var(--navy);margin-bottom:3px}
.contact__card small{color:var(--muted);font-size:14px;word-break:break-word}

/* ====================== FOOTER ====================== */
.footer{background:var(--navy);color:#bcd2e6;padding-top:50px}
.footer__inner{display:grid;grid-template-columns:1.6fr 1fr 1.4fr;gap:36px;padding-bottom:36px}
.footer__col p{font-size:14.5px;margin-top:14px;line-height:1.7}
.footer__col h4{color:#fff;font-size:17px;margin-bottom:14px}
.footer__col a{display:block;padding:5px 0;font-size:14.5px;color:#bcd2e6;transition:.2s}
.footer__col a:hover{color:#fff;padding-left:4px}
.footer__bottom{border-top:1px solid rgba(255,255,255,.1);padding:18px 0;font-size:13.5px;color:#90a8bf;text-align:center}

/* ====================== FLOATING BUTTONS ====================== */
.floating{position:fixed;right:18px;bottom:18px;z-index:950;display:flex;flex-direction:column;gap:12px}
.floating__btn{display:flex;align-items:center;gap:0;width:56px;height:56px;border-radius:50px;color:#fff;box-shadow:0 8px 22px rgba(0,0,0,.25);overflow:hidden;transition:.3s;justify-content:center;font-weight:600}
.floating__ic{font-size:24px;flex-shrink:0;width:56px;text-align:center}
.floating__label{white-space:nowrap;opacity:0;width:0;font-size:15px;transition:.3s}
.floating__btn:hover{width:140px;justify-content:flex-start}
.floating__btn:hover .floating__label{opacity:1;width:auto;padding-right:18px}
.floating__btn--call{background:linear-gradient(135deg,var(--orange),var(--orange-dark));animation:pulse 2s infinite}
.floating__btn--line{background:var(--line)}
.floating__btn--fb{background:var(--fb)}
@keyframes pulse{0%{box-shadow:0 8px 22px rgba(0,0,0,.25),0 0 0 0 rgba(255,106,0,.5)}70%{box-shadow:0 8px 22px rgba(0,0,0,.25),0 0 0 14px rgba(255,106,0,0)}100%{box-shadow:0 8px 22px rgba(0,0,0,.25),0 0 0 0 rgba(255,106,0,0)}}

/* ====================== BACK TO TOP ====================== */
.totop{position:fixed;left:18px;bottom:18px;z-index:940;width:46px;height:46px;border-radius:50%;background:var(--blue);color:#fff;border:none;font-size:22px;cursor:pointer;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(10px);transition:.3s}
.totop.show{opacity:1;visibility:visible;transform:translateY(0)}
.totop:hover{background:var(--blue-dark)}

/* ====================== PRICING ====================== */
.pricing{display:grid; gap:34px;align-items:start}
.price-table{background:#fff;border:1px solid #e3edf6;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow-sm)}
.price-row{display:grid;grid-template-columns:40px 78px 1fr auto;align-items:center;gap:14px;padding:18px 20px;border-bottom:1px solid #eef3f8}
.price-row:last-of-type{border-bottom:none}
.price-row__no{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--teal));color:#fff;font-weight:800;font-size:17px;display:flex;align-items:center;justify-content:center}
.price-row__img{width:78px;height:78px;object-fit:contain;background:#fff;border:1px solid #eef3f8;border-radius:12px;padding:4px}
.price-row__title{font-weight:700;color:var(--navy);font-size:17px;line-height:1.35}
.price-row__title small{display:block;font-weight:400;color:var(--muted);font-size:13px;margin-top:2px}
.price-row__price{text-align:right;color:#e30613;font-weight:800;font-size:22px;line-height:1.1;white-space:nowrap}
.price-row__price span{display:block;font-size:13px;color:var(--muted);font-weight:500}
.price-note{padding:14px 20px;background:#fff7f0;color:#b45309;font-size:13.5px;text-align:center;border-top:1px dashed #f0c8a0}
.price-img{position:relative}
.price-img img{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.price-img figcaption{text-align:center;color:var(--muted);font-size:13.5px;margin-top:10px}
.pricing__cta{text-align:center;margin-top:30px}

/* ====================== GALLERY / PORTFOLIO ====================== */
.gallery{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.gallery__item{position:relative;border-radius:14px;overflow:hidden;aspect-ratio:1/1;box-shadow:var(--shadow-sm);background:#e9f1f8}
.gallery__item img{width:100%;height:100%;object-fit:cover;transition:.4s}
.gallery__item:hover img{transform:scale(1.08)}
.gallery__item figcaption{position:absolute;left:0;right:0;bottom:0;background:linear-gradient(transparent,rgba(12,39,64,.82));color:#fff;font-size:12.5px;padding:24px 12px 10px;opacity:0;transform:translateY(8px);transition:.3s;line-height:1.35}
.gallery__item:hover figcaption{opacity:1;transform:translateY(0)}
@media(max-width:900px){.pricing{grid-template-columns:1fr}.gallery{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.gallery{grid-template-columns:repeat(2,1fr)}.price-row{grid-template-columns:34px 58px 1fr;gap:10px}.price-row__img{width:58px;height:58px}.price-row__price{grid-column:2/4;text-align:left;font-size:20px}}

/* ====================== ARTICLE PAGE ====================== */
.article-hero{background:linear-gradient(135deg,#0a66c2,#0fb5ba);color:#fff;padding:54px 0 48px}
.article-hero .crumb{font-size:14px;opacity:.9;margin-bottom:12px}
.article-hero .crumb a{border-bottom:1px dashed rgba(255,255,255,.6)}
.article-hero h1{font-size:34px;font-weight:800;line-height:1.3;max-width:760px}
.article-body{padding:50px 0 64px}
.article-body .prose{max-width:760px;margin:0 auto}
.prose h2{font-size:24px;color:var(--navy);margin:30px 0 12px;font-weight:700}
.prose h3{font-size:19px;color:var(--navy);margin:22px 0 8px;font-weight:600}
.prose p{color:var(--text);margin-bottom:14px;font-size:16.5px}
.prose ul,.prose ol{margin:0 0 16px 22px;color:var(--text)}
.prose li{margin-bottom:8px;font-size:16px}
.prose .lead{font-size:18px;color:var(--muted)}
.prose .note{background:rgba(15,181,186,.1);border-left:4px solid var(--teal);padding:16px 18px;border-radius:0 12px 12px 0;margin:20px 0;color:var(--navy)}
.article-cta{background:#fff;border:1px solid #e3edf6;border-radius:var(--radius);padding:28px;text-align:center;box-shadow:var(--shadow-sm);margin-top:36px}
.article-cta h3{font-size:21px;color:var(--navy);margin-bottom:8px}
.article-cta p{color:var(--muted);margin-bottom:16px}
.article-cta .btns{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.back-link{display:inline-block;margin-top:30px;color:var(--blue);font-weight:600}
.back-link:hover{color:var(--orange)}
@media(max-width:680px){.article-hero h1{font-size:26px}.article-cta .btns{flex-direction:column}.article-cta .btns .btn{width:100%}}

/* ====================== RESPONSIVE ====================== */
@media(max-width:900px){
  .hero__inner{grid-template-columns:1fr;gap:34px}
  .hero__title{font-size:38px}
  .cards,.why,.articles,.contact{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .footer__inner{grid-template-columns:1fr 1fr}
  .topbar__item--hide{display:none}
}
@media(max-width:680px){
  .nav{position:fixed;top:68px;right:0;left:0;background:#fff;flex-direction:column;align-items:stretch;padding:10px 16px 18px;box-shadow:var(--shadow);transform:translateY(-130%);transition:.3s;gap:2px}
  .nav.open{transform:translateY(0)}
  .nav a{padding:13px 12px;border-radius:8px}
  .nav__toggle{display:block}
  .hero{padding:44px 0 54px}
  .hero__title{font-size:30px}
  .hero__sub{font-size:16px}
  .hero__points{grid-template-columns:1fr}
  .hero__cta{flex-direction:column}
  .hero__cta .btn{width:100%}
  .stats__grid{grid-template-columns:1fr 1fr}
  .stats__item:nth-child(2){border-right:none}
  .cards,.why,.articles,.contact,.steps,.footer__inner{grid-template-columns:1fr}
  .section{padding:52px 0}
  .section__head h2{font-size:26px}
  .cta-banner__inner{flex-direction:column;text-align:center}
  .cta-banner__btns{width:100%;flex-direction:column}
  .cta-banner__btns .btn{width:100%}
}