/* BHP มั่นคง — หน้าเว็บสาธารณะ */
:root{
  --navy:#26265C; --navy-2:#34346B; --pink:#B0285A; --pink-d:#8F1F48; --blue:#5B9BC8; --orange:#C4702A;
  --ink:#1F1F3A; --text:#34344F; --muted:#5C5C75; --line:#E1E2EC; --line-2:#CACBDB;
  --bg:#ffffff; --tint:#F7F7FA; --ph:#E6E7F0;
  --pink-t:#F3DCE5; --blue-t:#DCE7F1; --orange-t:#F5E3D3;
  --r:12px; --wrap:1280px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:90px}
body{margin:0;font-family:'IBM Plex Sans Thai',system-ui,sans-serif;color:var(--ink);background:var(--bg);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--navy);text-decoration:none}
a:hover{color:var(--pink)}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--navy)}
p{margin:0}
button{font-family:inherit}
:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:8px 12px;z-index:100}
.skip:focus{left:8px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 40px}
.wrap.narrow{max-width:880px}
.center{text-align:center}
.section{padding:96px 0}
.section.tint{background:var(--tint)}
.h1{font-size:44px;font-weight:700}
.h2{font-size:40px;font-weight:700}
.h3{font-size:26px;font-weight:700}
.h4{font-size:20px;font-weight:700}
.mb{margin-bottom:32px}
.lead{font-size:17px;color:#4A4A63;line-height:1.7}
.empty{padding:48px 0;color:var(--muted);font-size:17px}

/* ปุ่ม */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:48px;padding:0 20px;border-radius:8px;font-size:15px;font-weight:600;border:1.5px solid transparent;cursor:pointer;white-space:nowrap;transition:background .15s,color .15s,border-color .15s}
.btn-lg{min-height:54px;padding:0 26px;font-size:16px}
.btn-sm{min-height:44px;padding:0 16px;font-size:14px}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:#1b1b47;color:#fff}
.btn-pink{background:var(--pink);color:#fff}
.btn-pink:hover{background:var(--pink-d);color:#fff}
.btn-outline{border-color:var(--navy);color:var(--navy);background:transparent}
.btn-outline:hover{background:var(--navy);color:#fff}
.btn-ghost-light{border-color:#fff;color:#fff}
.btn-ghost-light:hover{background:#fff;color:var(--navy)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px}
.icon-btn{display:none;width:44px;height:44px;border-radius:22px;border:0;background:transparent;align-items:center;justify-content:center;color:var(--navy);cursor:pointer}

/* หัวเว็บ */
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.97);border-bottom:1px solid var(--line);backdrop-filter:saturate(1.4) blur(6px)}
.topbar-in{height:84px;display:flex;align-items:center;gap:28px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand-text{display:flex;flex-direction:column}
.brand-th{font-size:16px;font-weight:700;color:var(--navy);line-height:1.3}
.brand-en{font-size:11px;font-weight:700;letter-spacing:.04em;color:var(--navy)}
.mainnav{flex-grow:1;display:flex;justify-content:center;align-items:center;gap:32px;font-size:16px;font-weight:500}
.mainnav a{color:var(--text);padding:10px 0}
.mainnav a:hover{color:var(--pink)}
.nav-staff{display:inline-flex;align-items:center;gap:6px;font-size:14px !important;color:var(--muted) !important;margin-left:auto}

/* ส่วนเปิดหน้า */
.hero{background:var(--tint);padding:72px 0 80px}
.hero-grid{display:grid;grid-template-columns:1fr 1.05fr;gap:64px;align-items:center}
.eyebrow,.eyebrow-pink,.eyebrow-light{display:flex;align-items:center;gap:10px;font-size:15px;font-weight:700;letter-spacing:.06em;color:var(--pink);margin-bottom:14px}
.eyebrow-light{color:#F0A6C4}
.sec-head.center .eyebrow-pink{justify-content:center}
.stripes{display:inline-flex;flex-direction:column;gap:2px}
.stripes i{display:block;width:28px;height:3px;background:var(--blue)}
.stripes i:nth-child(2){background:var(--pink)}
.stripes i:nth-child(3){background:var(--orange)}
.hero h1{font-size:56px;font-weight:700;line-height:1.2;margin-bottom:22px}
.hero .lead{font-size:19px;max-width:540px;margin-bottom:28px}
.stats{display:flex;gap:40px;margin:36px 0 0}
.stats div{display:flex;flex-direction:column-reverse;padding-right:40px;border-right:1px solid #DADBE6}
.stats div:last-child{border-right:0;padding-right:0}
.stats dd{margin:0;font-size:30px;font-weight:700;color:var(--navy);line-height:1.2}
.stats dt{font-size:14px;color:var(--muted)}
.hero-media{position:relative;padding-bottom:40px}
.hero-media img{width:100%;height:480px;object-fit:cover;border-radius:20px}
.hero-badge{position:absolute;left:-32px;bottom:0;display:flex;gap:14px;align-items:center;background:#fff;border-radius:14px;padding:18px 20px;box-shadow:0 16px 40px rgba(38,38,92,.14);max-width:320px}
.hb-icon{width:48px;height:48px;flex-shrink:0;border-radius:24px;background:var(--pink-t);color:var(--pink);display:flex;align-items:center;justify-content:center}
.hero-badge strong{display:block;font-size:15px;color:var(--navy)}
.hero-badge small{display:block;font-size:13px;color:var(--muted)}

/* หัวข้อ section */
.sec-head{margin-bottom:40px;display:flex;flex-direction:column;gap:4px}
.sec-head .lead{margin-top:10px;max-width:640px}
.sec-head.center{align-items:center}
.sec-head.split{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px}

/* บริการ */
.services{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:24px}
.svc{padding:28px;border:1px solid var(--line);border-top:4px solid var(--blue);border-radius:14px;display:flex;flex-direction:column;gap:14px;background:#fff}
.svc h3{font-size:20px}
.svc p{font-size:15px;line-height:1.7;color:#4A4A63}
.svc-icon{width:52px;height:52px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:var(--blue-t);color:#1F4E73}
.svc-pink{border-top-color:var(--pink)} .svc-pink .svc-icon{background:var(--pink-t);color:var(--pink-d)}
.svc-orange{border-top-color:var(--orange)} .svc-orange .svc-icon{background:var(--orange-t);color:#8A4513}
.svc-navy{border-top-color:var(--navy)} .svc-navy .svc-icon{background:var(--ph);color:var(--navy)}

/* ขั้นตอน */
.process{background:var(--navy);color:#fff}
.process .h2{color:#fff}
.steps{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:24px}
.steps li{padding-top:20px;border-top:2px solid rgba(255,255,255,.25);display:flex;flex-direction:column;gap:10px}
.step-no{font-size:32px;font-weight:700;color:#F0A6C4;line-height:1}
.steps h3{font-size:19px;color:#fff}
.steps p{font-size:15px;color:#D5D6EC;line-height:1.6}

/* ตัวกรอง */
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.chip{min-height:44px;padding:0 20px;border-radius:22px;border:1.5px solid var(--line-2);background:#fff;color:var(--text);font-size:15px;font-weight:500;cursor:pointer}
.chip[aria-pressed="true"]{background:var(--navy);border-color:var(--navy);color:#fff;font-weight:600}

/* การ์ดผลงาน */
.pgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:40px 32px}
.pcard{display:flex;flex-direction:column;gap:10px;color:var(--ink)}
.pcard[hidden],.kcard[hidden]{display:none}
.pcard-img{position:relative;aspect-ratio:4/3;border-radius:12px;overflow:hidden;background:var(--ph);display:flex;align-items:center;justify-content:center;color:var(--muted);margin-bottom:6px}
.pcard-img img{width:100%;height:100%;object-fit:cover;transition:transform .4s}
.pcard:hover .pcard-img img{transform:scale(1.04)}
.badge-white{position:absolute;top:14px;left:14px;padding:4px 12px;border-radius:14px;background:#fff;color:var(--navy);font-size:13px;font-weight:600}
.pcard-title{font-size:20px;font-weight:700;color:var(--navy)}
.pcard-meta{font-size:15px;color:var(--muted)}
.more{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--pink)}

/* การ์ดความรู้ */
.kgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:32px}
.kcard{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;color:var(--ink);transition:box-shadow .2s}
.kcard:hover{box-shadow:0 12px 32px rgba(38,38,92,.1)}
.kcard-img{position:relative;aspect-ratio:16/9;display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:center;overflow:hidden}
.kcard-img img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.kimg-video{background:var(--navy-2)}
.kimg-article{background:var(--ph);color:var(--muted)}
.kimg-link{background:#F7EADF;color:#8A4513;font-size:14px;font-weight:600}
.play{position:relative;width:64px;height:64px;border-radius:32px;background:var(--pink);color:#fff;display:flex;align-items:center;justify-content:center;box-shadow:0 6px 18px rgba(0,0,0,.25)}
.dur{position:absolute;bottom:10px;right:12px;padding:2px 8px;border-radius:4px;background:rgba(0,0,0,.72);color:#fff;font-size:12px}
.kcard-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex-grow:1}
.kbadge{align-self:flex-start;display:inline-block;padding:3px 10px;border-radius:12px;font-size:12px;font-weight:700}
.kb-video{background:var(--pink-t);color:var(--pink-d)}
.kb-article{background:var(--blue-t);color:#1F4E73}
.kb-link{background:var(--orange-t);color:#8A4513}
.kcard-title{font-size:18px;font-weight:700;line-height:1.45;color:var(--navy)}
.kcard-meta{margin-top:auto;display:flex;align-items:center;gap:6px;font-size:14px;color:var(--muted)}

/* หน้ารายละเอียด */
.preview-bar{background:#FFF4D6;color:#6B4E00;text-align:center;padding:10px 16px;font-size:14px}
.preview-bar a{color:#6B4E00;text-decoration:underline}
.back{display:inline-flex;align-items:center;gap:8px;min-height:44px;font-size:15px;font-weight:600;margin-bottom:20px}
.detail-head{display:flex;flex-direction:column;gap:12px;margin-bottom:32px}
.loc,.byline{display:flex;align-items:center;gap:8px;font-size:17px;color:#4A4A63}
.byline{font-size:15px;color:var(--muted)}
.detail-cover{margin:0 0 40px}
.detail-cover img{width:100%;max-height:620px;object-fit:cover;border-radius:16px}
.facts{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));margin:0 0 48px;border:1px solid #DADBE6;border-radius:12px;background:var(--tint);overflow:hidden}
.facts div{padding:20px 24px;border-right:1px solid #DADBE6;display:flex;flex-direction:column;gap:4px}
.facts div:last-child{border-right:0}
.facts dt{font-size:13px;color:var(--muted)}
.facts dd{margin:0;font-size:17px;font-weight:600;color:var(--navy)}
.desc-grid{display:grid;grid-template-columns:1fr 1.6fr;gap:64px;margin-bottom:56px}
.prose{font-size:17px;line-height:1.85;color:var(--text)}
.prose p{margin:0 0 1em}
.prose h2{font-size:26px;margin:1.4em 0 .5em}
.prose h3{font-size:21px;margin:1.2em 0 .4em}
.prose ul,.prose ol{padding-left:24px;margin:0 0 1em}
.prose li{margin-bottom:4px}
.prose a{text-decoration:underline}
.prose img{border-radius:12px;margin:8px 0;height:auto}
.prose figure{margin:1.2em 0}
.prose figcaption{font-size:14px;color:var(--muted);margin-top:6px}
.prose blockquote,.prose .tip{margin:1.2em 0;border-radius:12px;background:#EEF4FA;padding:18px 22px;color:#1F4E73;font-size:16px;border:0}
.article-body{font-size:18px}
.gallery-sec .h3{margin-bottom:20px}
.gallery-sec small{font-size:15px;font-weight:400;color:var(--muted);margin-left:8px}
.gallery{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.g-item{position:relative;padding:0;border:0;background:var(--ph);border-radius:12px;overflow:hidden;aspect-ratio:4/3;cursor:zoom-in}
.g-item img{width:100%;height:100%;object-fit:cover;transition:transform .3s}
.g-item:hover img{transform:scale(1.04)}
.g-cap{position:absolute;left:0;right:0;bottom:0;padding:24px 12px 10px;background:linear-gradient(transparent,rgba(0,0,0,.6));color:#fff;font-size:13px;text-align:left}
.video{position:relative;aspect-ratio:16/9;border-radius:14px;overflow:hidden;background:#000;margin-bottom:36px}
.video iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.refs{border-top:1px solid var(--line);padding-top:24px;margin-top:32px;display:flex;flex-direction:column;gap:6px}
.refs h2{margin-bottom:6px}
.refs a{display:flex;align-items:center;gap:10px;min-height:40px;text-decoration:underline}
.share{display:flex;align-items:center;gap:10px;margin-top:28px;font-size:14px;color:var(--muted)}
.share a,.share button,.socials a{width:44px;height:44px;border:1.5px solid var(--line-2);border-radius:22px;display:inline-flex;align-items:center;justify-content:center;font-size:12px;font-weight:600;background:#fff;color:var(--navy);cursor:pointer}

/* Lightbox */
.lightbox{border:0;padding:0;background:transparent;max-width:100vw;max-height:100vh;width:100vw;height:100vh}
.lightbox::backdrop{background:rgba(10,10,30,.92)}
.lightbox[open]{display:flex;align-items:center;justify-content:center}
.lightbox figure{margin:0;max-width:88vw;max-height:88vh;display:flex;flex-direction:column;align-items:center;gap:10px}
.lightbox img{max-width:88vw;max-height:80vh;object-fit:contain;border-radius:8px}
.lightbox figcaption{color:#fff;font-size:15px}
.lightbox button{position:absolute;width:52px;height:52px;border-radius:26px;border:0;background:rgba(255,255,255,.14);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}
.lb-close{top:18px;right:18px}.lb-prev{left:18px;top:50%;transform:translateY(-50%)}.lb-next{right:18px;top:50%;transform:translateY(-50%)}

/* Footer */
.site-footer{background:var(--tint);color:var(--ink)}
.cta-band{color:#fff;padding:80px 0;background-color:var(--navy);background-image:linear-gradient(90deg,rgba(38,38,92,.97) 0%,rgba(38,38,92,.9) 38%,rgba(38,38,92,.55) 68%,rgba(38,38,92,.15) 100%),url(img/hero.jpg);background-size:cover;background-position:center 45%}
.cta-in{display:flex;align-items:center;gap:24px}
.cta-text{flex-grow:1}
.cta-text h2{color:#fff;font-size:30px;margin-bottom:6px}
.cta-text p{color:#D5D6EC}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.stripe-bar{display:flex;flex-direction:column;gap:3px;padding-top:3px}
.stripe-bar i{display:block;height:5px;background:var(--blue)}
.stripe-bar i:nth-child(2){background:var(--pink)}
.stripe-bar i:nth-child(3){background:var(--orange)}
.foot-grid{display:grid;grid-template-columns:1.3fr .7fr 1.3fr 1.4fr;gap:48px;padding-top:48px;padding-bottom:32px}
.foot-logo{display:flex;align-items:center;gap:14px;margin-bottom:16px}
.foot-name{font-size:18px;font-weight:700;color:var(--navy);line-height:1.3}
.foot-en{font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--navy)}
.foot-brand p{color:#4A4A63;margin-bottom:16px}
.socials{display:flex;gap:10px}
.foot-col{display:flex;flex-direction:column;gap:12px}
.foot-col>a{color:var(--text)}
.foot-col>a:hover{color:var(--pink)}
.foot-h{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:700;letter-spacing:.06em;color:var(--muted);margin-bottom:4px}
.bar{display:block;width:24px;height:3px}
.bar-blue{background:var(--blue)}.bar-pink{background:var(--pink)}.bar-orange{background:var(--orange)}
.foot-row{display:flex;gap:10px;font-size:15px;color:var(--text);line-height:1.6}
.foot-row svg{flex-shrink:0;margin-top:3px}
.foot-row a{color:var(--text)}
.foot-map iframe{width:100%;height:190px;border:0;border-radius:10px;background:var(--ph)}
.map-link{font-size:14px;font-weight:600;text-decoration:underline}
.foot-bottom{border-top:1px solid #DADBE6;padding-top:16px;padding-bottom:16px;display:flex;align-items:center;gap:24px;font-size:13px;color:var(--muted)}
.foot-bottom span{flex-grow:1}

/* ===== แท็บเล็ต ===== */
@media (max-width:1100px){
  .topbar-cta{display:none}
  .mainnav{gap:22px}
  .services{grid-template-columns:repeat(2,minmax(0,1fr))}
  .steps{grid-template-columns:repeat(3,minmax(0,1fr));row-gap:32px}
  .foot-grid{grid-template-columns:1fr 1fr}
  .hero h1{font-size:46px}
}

/* ===== มือถือ ===== */
@media (max-width:820px){
  html{scroll-padding-top:72px}
  .wrap{padding:0 20px}
  .section{padding:56px 0}
  .h1{font-size:30px}.h2{font-size:28px}.h3{font-size:22px}
  .topbar-in{height:64px;gap:8px}
  .brand .logo-mark{width:44px;height:37px}
  .brand-en{display:none}
  .brand{flex-grow:1}
  .icon-btn{display:inline-flex}
  .call-mini{background:var(--pink);color:#fff}
  .mainnav{position:absolute;top:64px;left:0;right:0;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(38,38,92,.12);padding:6px 20px 14px;display:none}
  .mainnav.open{display:flex}
  .mainnav a{min-height:48px;display:flex;align-items:center;border-bottom:1px solid #EDEEF4}
  .nav-staff{margin-left:0;border-bottom:0 !important}
  .hero{padding:36px 0 48px}
  .hero-grid{grid-template-columns:1fr;gap:28px}
  .hero h1{font-size:36px;margin-bottom:16px}
  .hero .lead{font-size:16px;margin-bottom:22px}
  .btn-row{flex-direction:column}
  .btn-row .btn{width:100%}
  .stats{justify-content:space-between;gap:8px;margin-top:28px}
  .stats div{padding-right:0;border-right:0;align-items:center;text-align:center;flex:1}
  .stats dd{font-size:24px}.stats dt{font-size:12px}
  .hero-media{padding-bottom:0}
  .hero-media img{height:260px;border-radius:16px}
  .hero-badge{position:relative;left:auto;bottom:auto;z-index:1;margin-top:-28px;margin-left:12px;margin-right:12px;max-width:none}
  .sec-head{margin-bottom:24px}
  .sec-head.split{flex-direction:column;align-items:flex-start;gap:16px}
  .eyebrow,.eyebrow-pink,.eyebrow-light{font-size:13px}
  .stripes i{width:24px}
  .services{grid-template-columns:1fr;gap:12px}
  .svc{border-top-width:1px;border-left:4px solid var(--blue);padding:18px;gap:6px;flex-direction:row;flex-wrap:wrap;align-items:center}
  .svc-pink{border-left-color:var(--pink)}.svc-orange{border-left-color:var(--orange)}.svc-navy{border-left-color:var(--navy)}
  .svc-icon{width:40px;height:40px}
  .svc h3{font-size:18px;flex:1}
  .svc p{flex-basis:100%;font-size:14px}
  .steps{grid-template-columns:1fr;gap:20px}
  .steps li{flex-direction:row;flex-wrap:wrap;border-top:0;padding-top:0;gap:4px 16px}
  .step-no{width:44px;height:44px;border-radius:22px;border:2px solid #F0A6C4;display:flex;align-items:center;justify-content:center;font-size:15px}
  .steps h3{flex:1;align-self:center;font-size:17px}
  .steps p{flex-basis:100%;padding-left:60px;font-size:14px}
  .chips{flex-wrap:nowrap;overflow-x:auto;margin:0 -20px 24px;padding:0 20px}
  .chip{flex-shrink:0;padding:0 16px;font-size:14px}
  .pgrid{grid-template-columns:1fr;gap:32px}
  .kgrid{grid-template-columns:1fr;gap:12px}
  .kcard{flex-direction:row;padding:12px;gap:12px}
  .kcard-img{width:120px;height:84px;aspect-ratio:auto;flex-shrink:0;border-radius:8px}
  .kcard-img>svg{width:24px;height:24px}
  .kimg-link span{display:none}
  .play{width:36px;height:36px}.play svg{width:14px;height:14px}
  .dur{bottom:4px;right:4px;font-size:11px;padding:0 5px}
  .kcard-body{padding:0;gap:4px}
  .kbadge{padding:0;background:none !important;color:var(--pink) !important}
  .kcard-title{font-size:15px}
  .kcard-meta{font-size:12px}
  .facts{grid-template-columns:1fr 1fr}
  .facts div{border-right:0;border-bottom:1px solid #DADBE6;padding:14px 16px}
  .desc-grid{grid-template-columns:1fr;gap:10px;margin-bottom:36px}
  .prose,.article-body{font-size:16px}
  .gallery{grid-template-columns:1fr 1fr;gap:12px}
  .detail-cover{margin-left:-20px;margin-right:-20px}
  .detail-cover img{border-radius:0}
  .video{margin-left:-20px;margin-right:-20px;border-radius:0}
  .cta-band{padding:190px 0 32px;background-image:linear-gradient(180deg,rgba(38,38,92,.1) 0%,rgba(38,38,92,.55) 28%,rgba(38,38,92,.92) 55%,rgba(38,38,92,.98) 100%),url(img/hero.jpg);background-position:62% top}
  .cta-in{flex-direction:column;align-items:stretch;gap:18px}
  .cta-text h2{font-size:24px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%}
  .foot-grid{grid-template-columns:1fr;gap:28px;padding-top:32px}
  .foot-bottom{flex-direction:column;align-items:stretch;gap:12px}
}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none !important}}