/* ==========================================================================
   BT678 — bt678vip.pro · design system "Aurora Ink" (v2)
   โครงใหม่: dark canvas + violet→magenta→mint, glass panels, numbered sections
   เขียนใหม่ทั้งไฟล์ (v1 เก็บสำรองไว้ที่ ../css_v1_backup.css)
   ========================================================================== */

:root{
  --bg:#EAF3FF;
  --bg-soft:#F3F8FF;
  --panel:rgba(12,80,180,.04);
  --panel-2:rgba(12,80,180,.02);
  --line:rgba(12,80,180,.09);
  --line-soft:rgba(12,80,180,.06);
  --ink:#12203A;
  --ink-2:#33415C;
  --muted:#4E5F7A;
  --muted-2:#6B7C96;
  --vio:#1A6DD1;
  --mag:#0C80F1;
  --mint:#12A150;
  --gold:#E0A000;
  --danger:#D93A4E;
  --grad:linear-gradient(100deg,#1A6DD1 0%,#0C80F1 55%,#0C80F1 100%);
  --r-xs:10px; --r-sm:14px; --r-md:18px; --r-lg:24px; --r-xl:28px;
  --shadow:0 30px 70px -40px rgba(26,109,209,.85);
  --wrap:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:"Noto Sans Thai","Sarabun",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  font-size:16px;line-height:1.75;
  counter-reset:sec;
  overflow-x:hidden;
}
/* แสงพื้นหลังแบบ Aurora */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(1100px 640px at 84% -12%,rgba(26,109,209,.30),transparent 62%),
    radial-gradient(820px 540px at 6% 10%,rgba(12,128,241,.18),transparent 64%),
    radial-gradient(900px 700px at 52% 104%,rgba(18,161,80,.11),transparent 62%);
}
img{max-width:100%;height:auto}
a{color:var(--mint);text-decoration:none}
a:hover{color:#0E7C3A}
p{margin:0 0 14px}
ul,ol{margin:0 0 14px}
::selection{background:rgba(26,109,209,.45);color:#fff}
:focus-visible{outline:2px solid var(--mint);outline-offset:2px;border-radius:6px}

h1,h2,h3,h4{line-height:1.34;letter-spacing:-.01em;margin:0}
h1{font-weight:800}
h2{font-weight:800}
h3{font-weight:700}
h1 em,h1 strong,h1 b{font-style:normal;font-weight:800}
.grad-text,.hero h1 em,.facts .fact b,.promo-value,.statband-cell b{
  background:var(--grad);-webkit-background-clip:text;background-clip:text;
  color:transparent;-webkit-text-fill-color:transparent;
}

.wrap{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 22px}
.mb-0{margin-bottom:0}
.lead{font-size:16.5px;line-height:1.85;color:var(--muted);max-width:70ch}
.skip{position:absolute;left:-9999px;top:0;z-index:200;background:var(--mint);color:#062B18;
  padding:10px 16px;border-radius:0 0 var(--r-sm) 0;font-weight:700}
.skip:focus{left:0}

/* ---------------------------------------------------------------- buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 22px;border-radius:var(--r-sm);border:1px solid transparent;
  font-size:15.5px;font-weight:700;font-family:inherit;line-height:1.2;
  cursor:pointer;white-space:nowrap;text-decoration:none;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
}
.btn-primary{
  background:var(--grad);color:var(--ink);
  box-shadow:0 14px 34px -16px rgba(12,128,241,.95),0 6px 18px -10px rgba(26,109,209,.9);
}
.btn-primary:hover{transform:translateY(-2px);color:#fff;
  box-shadow:0 20px 44px -18px rgba(12,128,241,1),0 8px 24px -12px rgba(26,109,209,1)}
.btn-light{background:rgba(12,80,180,.07);color:var(--ink);border-color:var(--line);backdrop-filter:blur(8px)}
.btn-light:hover{background:rgba(12,80,180,.13);color:var(--ink);transform:translateY(-2px)}
.btn-brand{background:linear-gradient(100deg,#1A6DD1,#0F4C93);color:#fff}
.btn-brand:hover{transform:translateY(-2px);color:#fff}
.btn-outline{background:transparent;color:#1A6DD1;border-color:rgba(26,109,209,.55)}
.btn-outline:hover{background:rgba(26,109,209,.14);color:var(--ink);border-color:rgba(26,109,209,.9)}
.btn-ghost{background:rgba(12,80,180,.06);color:#0F4C93;border-color:rgba(12,80,180,.30)}
.btn-ghost:hover{background:rgba(12,128,241,.14);color:#0B2A5B;border-color:rgba(12,128,241,.55)}
.btn-sm{padding:9px 16px;font-size:13.5px;border-radius:11px}
.btn-block{width:100%}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}

/* ------------------------------------------------------------ top ticker */
.topbar{
  position:relative;z-index:60;
  background:linear-gradient(90deg,rgba(26,109,209,.22),rgba(12,128,241,.14) 55%,rgba(18,161,80,.14));
  border-bottom:1px solid var(--line-soft);
  font-size:12.5px;color:#33415C;
}
.topbar .wrap{display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:40px;padding-top:7px;padding-bottom:7px}
.topbar p{display:flex;align-items:center;gap:9px;line-height:1.5;margin:0}
.topbar p:first-child::before{
  content:"";width:7px;height:7px;border-radius:50%;background:var(--mint);
  box-shadow:0 0 0 4px rgba(18,161,80,.18);flex:0 0 auto;
}

/* ----------------------------------------------------------------- header */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(8,7,13,.74);backdrop-filter:blur(16px) saturate(160%);
  border-bottom:1px solid var(--line-soft);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;
  background:linear-gradient(90deg,transparent,rgba(26,109,209,.9),rgba(18,161,80,.85),transparent);
  opacity:.75;
}
.site-header .wrap{display:flex;align-items:center;gap:22px;min-height:70px;position:relative}
.brand{display:flex;align-items:center;flex:0 0 auto}
.brand img{display:block;height:34px;width:auto}
.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav a{
  padding:9px 14px;border-radius:999px;font-size:14.5px;font-weight:600;
  color:#33415C;transition:background .2s,color .2s,box-shadow .2s;white-space:nowrap;
}
.nav a:hover{background:rgba(12,80,180,.07);color:var(--ink)}
.nav a[aria-current="page"]{background:rgba(26,109,209,.18);color:var(--ink);box-shadow:inset 0 0 0 1px rgba(26,109,209,.45)}
.nav-cta{display:flex;gap:8px;margin-left:14px;padding-left:16px;border-left:1px solid var(--line-soft)}
.nav-cta-m{display:none}
.nav-toggle{
  display:none;width:44px;height:40px;margin-left:auto;padding:9px 10px;
  background:rgba(12,80,180,.06);border:1px solid var(--line);border-radius:12px;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;background:#12203A;border-radius:2px;margin:4px 0}

/* ------------------------------------------------------------------- hero */
.hero{padding:58px 0 0;position:relative}
.hero .wrap:first-of-type{display:grid;grid-template-columns:1.06fr .94fr;gap:46px;align-items:center}
.hero-copy{max-width:640px}
.hero-kicker{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  background:rgba(26,109,209,.10);border:1px solid rgba(26,109,209,.28);
  color:#0F4C93;font-size:12.5px;font-weight:700;letter-spacing:.02em;
}
.hero-kicker::before{content:"";width:6px;height:6px;border-radius:50%;background:#1A6DD1;
  box-shadow:0 0 0 4px rgba(26,109,209,.16)}
.hero h1{font-size:clamp(2rem,4.5vw,3.3rem);margin:20px 0 16px;line-height:1.3}
.hero-copy p{font-size:17px;line-height:1.85;color:var(--muted);max-width:62ch}
.hero-art{
  position:relative;padding:14px;border-radius:var(--r-xl);overflow:hidden;
  background:linear-gradient(155deg,rgba(26,109,209,.24),rgba(12,128,241,.10) 58%,rgba(18,161,80,.14));
  border:1px solid rgba(12,80,180,.12);
  box-shadow:0 50px 90px -50px rgba(26,109,209,.95),inset 0 1px 0 rgba(12,80,180,.10);
}
.hero-art::before,.hero-art::after{
  content:"";position:absolute;border-radius:50%;filter:blur(56px);pointer-events:none;z-index:0;
}
.hero-art::before{width:220px;height:220px;top:-70px;right:-40px;background:rgba(12,128,241,.45)}
.hero-art::after{width:200px;height:200px;bottom:-80px;left:-50px;background:rgba(18,161,80,.32)}
.hero-art picture{display:block;position:relative;z-index:1}
.hero-art img{display:block;width:100%;height:auto;aspect-ratio:1600/893;object-fit:cover;border-radius:var(--r-md)}

.facts{
  margin-top:44px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.fact{
  padding:24px 20px;background:linear-gradient(180deg,rgba(12,80,180,.055),rgba(12,80,180,.012));
  text-align:center;
}
.fact b{display:block;font-size:clamp(1.45rem,2.6vw,2.05rem);font-weight:800;font-variant-numeric:tabular-nums}
.fact span{display:block;margin-top:6px;font-size:12.5px;color:var(--muted-2)}

/* ---------------------------------------------------------------- section */
.section{padding:76px 0;position:relative;counter-increment:sec}
.section + .section{border-top:1px solid var(--line-soft)}
.section--paper{background:linear-gradient(180deg,rgba(12,80,180,.035),rgba(12,80,180,0))}
.section-head{max-width:900px;margin-bottom:38px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;padding:6px 13px;border-radius:999px;
  background:rgba(12,80,180,.035);border:1px solid var(--line);
  font-size:11.5px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:#5C6E8A;
}
.eyebrow::before{
  content:counter(sec,decimal-leading-zero);color:var(--vio);font-weight:800;
  letter-spacing:.06em;font-variant-numeric:tabular-nums;
}
.section-head h2{font-size:clamp(1.45rem,2.9vw,2.08rem);margin:16px 0 12px}
.section-head .lead{margin-bottom:0}
.subsect{margin-top:36px}
.subsect h3{font-size:1.16rem;color:var(--ink);display:flex;gap:11px;align-items:baseline}
.subsect h3::before{
  content:"";flex:0 0 auto;width:5px;height:19px;border-radius:4px;
  background:var(--grad);transform:translateY(1px);
}
.subsect p{color:var(--muted);font-size:15.5px;margin-top:10px}

/* ------------------------------------------------------------------ grid */
.grid{display:grid;gap:20px;margin-top:26px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.grid-note{font-size:13px;color:var(--muted-2);margin-top:12px}

.card{
  position:relative;padding:24px;border-radius:20px;
  background:linear-gradient(180deg,rgba(12,80,180,.055),rgba(12,80,180,.018));
  border:1px solid var(--line);
  transition:transform .26s ease,border-color .26s ease,box-shadow .26s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(26,109,209,.45);box-shadow:var(--shadow)}
.card-t{font-size:17px;font-weight:700;color:var(--ink);margin:14px 0 8px}
.card p{color:var(--muted);font-size:15.5px;line-height:1.78;margin-bottom:10px}
.card p:last-child{margin-bottom:0}
.card-ico,.card-icon{
  width:46px;height:46px;display:grid;place-items:center;border-radius:14px;
  background:linear-gradient(150deg,#EAF3FF,#D6E8FF);
  box-shadow:0 10px 24px -14px rgba(12,80,180,.55);
}
.card-ico img,.card-icon img{width:24px;height:24px;display:block}
.card-link{display:block;color:inherit;text-decoration:none}
.card-link:hover{color:inherit}
.card-go{display:inline-block;margin-top:14px;font-size:14px;font-weight:700;color:var(--mint);
  transition:transform .22s ease}
.card-link:hover .card-go{transform:translateX(5px);color:#0E7C3A}

/* ------------------------------------------------------------------ promo */
.promo{padding:26px 24px;border-color:rgba(224,160,0,.24)}
.tag{display:inline-block;padding:5px 11px;border-radius:999px;font-size:11.5px;font-weight:700;
  letter-spacing:.08em;text-transform:uppercase}
.tag--gold{background:rgba(224,160,0,.14);color:#B27B00;border:1px solid rgba(224,160,0,.32)}
.promo-value{display:block;margin:14px 0 2px;font-size:clamp(2rem,3.6vw,2.55rem);font-weight:800;
  font-variant-numeric:tabular-nums;line-height:1.15}
.promo-t{font-size:16.5px;font-weight:700;color:var(--ink);margin:8px 0 8px}
.promo-cta{margin-top:16px}

/* ------------------------------------------------------------------ steps */
.steps{list-style:none;padding:0;margin-top:26px;display:grid;gap:14px;counter-reset:st}
.steps li{
  counter-increment:st;position:relative;padding:20px 24px 20px 76px;
  background:rgba(12,80,180,.035);border:1px solid var(--line);border-radius:var(--r-md);
  color:var(--muted);font-size:15.5px;transition:border-color .24s,background .24s;
}
.steps li:hover{border-color:rgba(18,161,80,.4);background:rgba(18,161,80,.05)}
.steps li::before{
  content:counter(st);position:absolute;left:20px;top:20px;width:40px;height:40px;
  display:grid;place-items:center;border-radius:12px;font-weight:800;font-size:16px;color:var(--ink);
  background:linear-gradient(140deg,#1A6DD1,#0C80F1);
  box-shadow:0 12px 26px -14px rgba(26,109,209,.95);
}
.steps li strong{display:block;margin-bottom:6px;font-size:16.5px;color:var(--ink)}
.steps li p{margin:0}

/* ------------------------------------------------------------------ table */
.table-wrap{
  margin-top:26px;border:1px solid var(--line);border-radius:20px;overflow-x:auto;
  background:rgba(12,80,180,.025);-webkit-overflow-scrolling:touch;
  box-shadow:inset 0 1px 0 rgba(12,80,180,.05);
}
table.data{width:100%;min-width:600px;border-collapse:collapse;font-size:15px}
table.data th{
  background:rgba(26,109,209,.17);color:#0F4C93;font-weight:700;text-align:left;
  padding:15px 18px;white-space:nowrap;border-bottom:1px solid rgba(26,109,209,.3);
}
table.data td{padding:15px 18px;border-bottom:1px solid var(--line-soft);color:var(--muted);vertical-align:top}
table.data td:first-child{color:var(--ink-2);font-weight:600}
table.data tbody tr:nth-child(odd){background:rgba(12,80,180,.018)}
table.data tbody tr:hover{background:rgba(26,109,209,.08)}
table.data tbody tr:last-child td{border-bottom:0}
.table-note{margin-top:12px;font-size:13px;color:var(--muted-2)}

/* -------------------------------------------------------------------- faq */
.faq{margin-top:24px;display:grid;gap:12px}
.faq details{
  background:rgba(12,80,180,.035);border:1px solid var(--line);border-radius:var(--r-md);
  overflow:hidden;transition:border-color .24s,background .24s;
}
.faq details[open]{border-color:rgba(26,109,209,.5);background:rgba(26,109,209,.075)}
.faq summary{
  position:relative;cursor:pointer;list-style:none;padding:18px 56px 18px 20px;
  font-size:16px;font-weight:700;color:var(--ink);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);
  color:var(--mint);font-size:22px;font-weight:800;line-height:1;
}
.faq details[open] summary::after{content:"–"}
.faq-body{padding:0 20px 20px;color:var(--muted);font-size:15.5px;line-height:1.82}
.faq-body p:last-child{margin-bottom:0}

/* --------------------------------------------------------- callout / chips */
.callout{
  margin-top:24px;padding:18px 22px;border-radius:var(--r-md);
  border-left:3px solid var(--mint);background:rgba(18,161,80,.09);color:#0E5B33;
  font-size:15.5px;
}
.callout p{margin:0;color:inherit}
.callout--warn{border-left-color:var(--gold);background:rgba(224,160,0,.10);color:#7A5200}

.pills{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.pills li{padding:9px 15px;border-radius:999px;background:rgba(12,80,180,.05);
  border:1px solid var(--line);font-size:14px;color:var(--ink-2)}

.checklist,.warnlist{list-style:none;padding:0;margin-top:22px;display:grid;gap:12px}
.checklist li,.warnlist li{position:relative;padding-left:40px;color:var(--muted);font-size:15.5px;line-height:1.78}
.checklist li::before,.warnlist li::before{
  position:absolute;left:0;top:1px;width:25px;height:25px;border-radius:9px;
  display:grid;place-items:center;font-size:13px;font-weight:800;
}
.checklist li::before{content:"✓";background:rgba(18,161,80,.15);color:var(--mint)}
.warnlist li::before{content:"!";background:rgba(224,160,0,.16);color:var(--gold)}

/* --------------------------------------------------- testimonials / stats */
.testi-wrap{margin-top:26px}
.testi-head{margin-top:30px;font-size:16.5px;font-weight:700;color:var(--ink)}
.testi{
  margin:0;padding:24px;border-radius:20px;background:rgba(12,80,180,.04);
  border:1px solid var(--line);
}
.testi blockquote{margin:0}
.testi blockquote::before{
  content:"”";display:block;font-family:Georgia,"Times New Roman",serif;font-size:46px;
  line-height:.9;color:rgba(26,109,209,.65);margin-bottom:8px;
}
.testi blockquote p{margin:0;color:var(--ink-2);font-size:15.5px;line-height:1.82}
.testi figcaption{margin-top:14px;font-size:13.5px;font-weight:600;color:var(--mint)}

.statband{
  margin-top:28px;display:grid;grid-template-columns:repeat(4,1fr);gap:1px;
  background:var(--line);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
}
.statband-cell{padding:26px 18px;background:var(--bg-soft);text-align:center}
.statband-cell b{display:block;font-size:clamp(1.55rem,3vw,2.25rem);font-weight:800;font-variant-numeric:tabular-nums}
.statband-cell span{display:block;margin-top:6px;font-size:13px;color:var(--muted-2)}

/* ------------------------------------------------------------- breadcrumb */
.crumb{display:flex;flex-wrap:wrap;gap:10px;padding:20px 0 0;font-size:13.5px;color:var(--muted-2)}
.crumb a{color:#5C6E8A}
.crumb a:hover{color:var(--mint)}
.crumb span[aria-hidden]{color:#8794AC}

/* --------------------------------------------------------------- cta band */
.cta-band{
  position:relative;overflow:hidden;text-align:center;padding:54px 40px;border-radius:var(--r-xl);
  background:linear-gradient(120deg,#1A6DD1 0%,#0C80F1 58%,#0C80F1 100%);
  border:1px solid rgba(12,80,180,.20);
  box-shadow:0 50px 100px -55px rgba(12,128,241,1);
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10% auto;height:120%;pointer-events:none;
  background:radial-gradient(520px 260px at 20% 20%,rgba(12,80,180,.30),transparent 60%);
}
.cta-band h2{position:relative;font-size:clamp(1.5rem,3vw,2.15rem);color:#fff;margin-bottom:12px}
.cta-band p{position:relative;max-width:62ch;margin:0 auto;font-size:16.5px;color:rgba(12,80,180,.94)}
.cta-band .btn-row{position:relative;justify-content:center}
.cta-band .btn-light{background:rgba(12,80,180,.96);color:#0F4C93;border-color:transparent}
.cta-band .btn-light:hover{background:#fff}

/* ----------------------------------------------------------------- footer */
.site-footer{
  margin-top:84px;padding:60px 0 30px;border-top:1px solid var(--line-soft);
  background:linear-gradient(180deg,rgba(12,80,180,.035),rgba(12,80,180,0));
}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:40px}
.site-footer h4{margin-bottom:16px;font-size:12.5px;font-weight:700;letter-spacing:.12em;
  text-transform:uppercase;color:#6B7C96}
.foot-logo{width:150px;height:auto;display:block}
.foot-about{margin:16px 0 0;font-size:14px;line-height:1.8;color:var(--muted-2)}
.foot-about a{color:#5C6E8A}
.footer-list{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer-list a{font-size:14.5px;color:var(--muted);transition:color .2s}
.footer-list a:hover{color:#fff}
.footer-bottom{
  margin-top:44px;padding-top:24px;border-top:1px solid var(--line-soft);
  display:flex;justify-content:space-between;gap:24px;font-size:13px;color:var(--muted-2);
}
.footer-bottom a{color:#5C6E8A}
.badge-18{
  display:inline-block;padding:2px 9px;border-radius:999px;font-size:11.5px;font-weight:700;
  background:rgba(217,58,78,.16);color:#D93A4E;border:1px solid rgba(217,58,78,.32);
}

/* --------------------------------------------------- sticky bar / to top */
body.has-stick{padding-bottom:96px}
#site-stick{
  position:fixed;left:0;right:0;bottom:0;z-index:75;display:flex;justify-content:center;
  padding:14px 16px calc(14px + env(safe-area-inset-bottom));
  background:linear-gradient(0deg,rgba(8,7,13,.97),rgba(8,7,13,.72) 62%,transparent);
  transform:translateY(130%);transition:transform .4s cubic-bezier(.2,.8,.25,1);
}
#site-stick.show{transform:none}
.stick-card{
  display:flex;align-items:center;gap:14px;width:100%;max-width:920px;
  padding:14px 18px;border-radius:var(--r-md);
  background:rgba(20,17,30,.94);border:1px solid rgba(26,109,209,.38);
  backdrop-filter:blur(14px);box-shadow:0 30px 70px -34px #000;
}
.stick-label{margin:0;flex:1;font-size:14px;color:var(--ink-2)}
.stick-close{
  width:32px;height:32px;flex:0 0 auto;border-radius:10px;cursor:pointer;
  background:rgba(12,80,180,.07);border:1px solid var(--line);color:#5C6E8A;
  font-size:16px;line-height:1;
}
.stick-close:hover{background:rgba(12,80,180,.14);color:#fff}
#to-top{
  position:fixed;right:18px;bottom:24px;z-index:72;width:46px;height:46px;border-radius:15px;
  display:grid;place-items:center;cursor:pointer;color:var(--ink);font-size:18px;
  background:rgba(20,17,30,.92);border:1px solid var(--line);backdrop-filter:blur(10px);
  opacity:0;pointer-events:none;transition:opacity .3s,transform .3s;
}
#to-top.show{opacity:1;pointer-events:auto}
#to-top:hover{transform:translateY(-3px)}

/* ------------------------------------------------------------------- 404 */
.search404{
  margin-top:26px;padding:28px;border-radius:20px;
  border:1px dashed rgba(12,80,180,.18);background:rgba(12,80,180,.03);
}

/* ---------------------------------------------------------------- reveal */
.reveal{opacity:0;transform:translateY(18px);
  transition:opacity .6s ease,transform .6s cubic-bezier(.2,.75,.3,1)}
.reveal.in{opacity:1;transform:none}
html:not(.js) .reveal{opacity:1;transform:none;transition:none}
@media (prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none;transition:none}
  html{scroll-behavior:auto}
}

/* ------------------------------------------------------------ responsive */
@media (max-width:1080px){
  .nav-toggle{display:block}
  .nav{
    position:absolute;top:calc(100% + 10px);left:16px;right:16px;margin:0;
    display:none;flex-direction:column;align-items:stretch;gap:4px;padding:14px;
    background:rgba(14,12,22,.98);border:1px solid var(--line);border-radius:20px;
    box-shadow:0 40px 80px -40px #000;backdrop-filter:blur(16px);
  }
  .nav.open{display:flex}
  .nav a{padding:12px 14px;font-size:15.5px}
  .nav-cta{display:none}
  .nav-cta-m{display:grid;gap:9px;margin-top:10px;padding-top:14px;border-top:1px solid var(--line-soft)}
  .nav-cta-m .btn{width:100%}
  .hero .wrap:first-of-type{grid-template-columns:1fr;gap:32px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
}
@media (max-width:760px){
  .section{padding:58px 0}
  .hero{padding-top:38px}
  .facts,.statband{grid-template-columns:repeat(2,1fr)}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .grid{gap:14px}
  .cta-band{padding:38px 22px}
  .footer-grid{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;gap:14px}
  .topbar .wrap p:last-child{display:none}
  table.data{font-size:14px;min-width:520px}
  table.data th,table.data td{padding:12px 13px}
  .stick-card{flex-wrap:wrap;gap:10px;padding:13px 14px}
  .stick-label{flex:1 1 100%;font-size:13.5px}
  .stick-card .btn{flex:1}
  .card{padding:20px}
  .steps li{padding:18px 18px 18px 70px}
}

/* ==================== v2.1 refinements (rhythm & readability) ==================== */
.section + .section{border-top:1px solid rgba(12,80,180,.055)}
.section > .wrap > p{max-width:80ch;color:#4E5F7A;font-size:16.6px;line-height:1.92;margin:0 0 20px}
.section > .wrap > p:last-child{margin-bottom:0}
.section > .wrap > p + p{margin-top:-4px}
.section-head{margin-bottom:34px}
.section-head .lead{color:#4E5F7A}
.section .wrap a:not(.btn):not(.card-link){color:#0C63CE;text-decoration:underline;text-decoration-color:rgba(26,109,209,.55);text-underline-offset:3px}
.section .wrap a:not(.btn):not(.card-link):hover{color:var(--ink);text-decoration-color:var(--mint)}
.subsect h3{margin-bottom:12px}
.subsect + .subsect{margin-top:30px}
.card p{color:#4E5F7A}
.card-t + p{margin-top:0}
.section .wrap strong{color:#12203A}
.hero + .section{margin-top:8px}
@media (max-width:760px){
  .section > .wrap > p{font-size:16px;line-height:1.86}
  .hero + .section{margin-top:0}
}

/* ======================================================================
   v3 — "Light Blue" theme (จับคู่โทนกับ bt678.ru.com: ขาว #FFFFFF + น้ำเงิน #1A6DD1)
   บล็อกนี้ต่อท้ายเพื่อทับสีของธีมเดิม (Aurora Ink) เฉพาะจุด
   ====================================================================== */
html{background:#FFFFFF}
body{background:#FFFFFF;color:#333333}
/* ลำดับชั้นหัวข้อ: h1/h2 น้ำเงินแบบเว็บต้นแบบ, h3/h4 เข้มกว่าเล็กน้อย */
h1,h2{color:#1A6DD1}
h3,h4{color:#123A68}
a{color:#0C63CE}
a:hover{color:#0F4C93}
::selection{background:rgba(12,128,241,.35);color:#fff}
/* ปุ่ม */
.btn-primary{background:linear-gradient(100deg,#0C80F1 0%,#1A6DD1 58%,#0F4C93 100%);
  color:#fff;border-color:transparent;border-radius:10px}
.btn-primary:hover{color:#fff}
.btn-brand{background:#0C80F1;color:#fff;border-color:transparent;border-radius:10px}
.btn-brand:hover{color:#fff;background:#0F4C93}
.btn-outline{color:#BEDAFF;border-color:rgba(12,128,241,.55)}
.btn-outline:hover{background:rgba(12,128,241,.16);color:#fff;border-color:#0C80F1}
.btn-light{background:rgba(12,80,180,.07);border-color:rgba(12,80,180,.18);color:#0F4C93}
.btn-light:hover{background:rgba(12,128,241,.14);color:#0F4C93}
/* แถบประกาศบนสุด: ขาว-ฟ้าอ่อน */
.topbar{background:linear-gradient(90deg,#EAF3FF,#F6FAFF 55%,#E7F1FF);
  border-bottom:1px solid rgba(12,80,180,.14);color:#2C5C9E}
/* เฮดเดอร์: ยังเป็นแถบดำ + โลโก้ขาว เหมือน bt678.ru.com */
.site-header{background:rgba(11,11,13,.96);border-bottom:1px solid rgba(255,255,255,.08)}
.site-header::after{background:linear-gradient(90deg,transparent,rgba(12,128,241,.95),rgba(26,109,209,.9),transparent);opacity:.9}
.nav a{color:#D7E1F0}
.nav a:hover{background:rgba(255,255,255,.10);color:#fff}
.nav a[aria-current="page"]{background:rgba(12,128,241,.24);color:#fff;
  box-shadow:inset 0 0 0 1px rgba(12,128,241,.55)}
.nav-toggle{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.16)}
.nav-toggle span{background:#EAF1FB}
/* เฮโร่: พื้นฟ้าอ่อน การ์ดขาว */
.hero-art{background:linear-gradient(155deg,#E9F2FF,#F5FAFF 58%,#E6F0FF);
  border-color:rgba(12,80,180,.16);
  box-shadow:0 40px 80px -50px rgba(12,80,180,.55),inset 0 1px 0 #fff}
.hero-art::before{background:rgba(12,128,241,.35)}
.hero-art::after{background:rgba(26,109,209,.28)}
body::before{
  background:
    radial-gradient(1100px 640px at 84% -12%,rgba(12,128,241,.11),transparent 62%),
    radial-gradient(820px 540px at 6% 10%,rgba(26,109,209,.06),transparent 64%),
    radial-gradient(900px 700px at 52% 104%,rgba(12,128,241,.07),transparent 62%);
}
/* การ์ด / ชิป / ไอคอน */
.card{background:#fff;border-color:rgba(12,80,180,.14);box-shadow:0 18px 40px -32px rgba(12,60,140,.45)}
.card:hover{border-color:rgba(12,128,241,.5);box-shadow:0 30px 60px -34px rgba(12,80,180,.45)}
.card-t{color:#12203A}
.card-ico,.card-icon{background:linear-gradient(150deg,#EAF3FF,#D6E8FF);
  box-shadow:0 10px 22px -16px rgba(12,80,180,.45)}
.card-go{color:#0F4C93}
.card-link:hover .card-go{color:#0C63CE}
.promo{border-color:rgba(224,160,0,.32)}
.promo-t{color:#12203A}
/* ขั้นตอน / ตาราง / FAQ */
.steps li:hover{border-color:rgba(12,128,241,.45);background:rgba(12,128,241,.05)}
.steps li::before{background:linear-gradient(140deg,#1A6DD1,#0C80F1);color:#fff;
  box-shadow:0 12px 26px -14px rgba(12,80,180,.9)}
.steps li strong{color:#12203A}
.table-wrap{background:#fff}
table.data th{background:rgba(12,128,241,.12);color:#0F4C93;border-bottom:1px solid rgba(12,128,241,.28)}
table.data tbody tr:nth-child(odd){background:rgba(12,80,180,.03)}
table.data tbody tr:hover{background:rgba(12,128,241,.07)}
.faq summary{color:#12203A}
.faq summary::after{color:#1A6DD1}
.testi{background:#F8FBFF}
.testi-head{color:#12203A}
.testi figcaption{color:#0F4C93}
.testi blockquote::before{color:rgba(12,128,241,.38)}
.section--paper{background:#F3F8FF}
.statband-cell{background:#F8FBFF}
.checklist li::before{background:rgba(18,161,80,.14);color:#0E7C3A}
.warnlist li::before{background:rgba(224,160,0,.18);color:#B27B00}
.callout{background:#EAFBF3;color:#0E5B33;border-left-color:#12A150}
.callout--warn{background:#FFF8E8;color:#7A5200}
.eyebrow{background:rgba(12,128,241,.08);border-color:rgba(12,128,241,.24);color:#0F4C93}
.section .wrap strong{color:#12203A}
.section .wrap a:not(.btn):not(.card-link){color:#0C63CE;text-decoration-color:rgba(12,99,206,.45)}
.section .wrap a:not(.btn):not(.card-link):hover{color:#0F4C93;text-decoration-color:#0C80F1}
.crumb a{color:#5C6E8A}
.crumb a:hover{color:#1A6DD1}
.pills li{background:rgba(12,128,241,.06);color:#24334D}
/* แบนด์ CTA: ไล่เฉดน้ำเงิน ตัวอักษรขาว */
.cta-band{background:linear-gradient(120deg,#0C80F1 0%,#1A6DD1 58%,#0F4C93 100%);
  border-color:rgba(255,255,255,.22);box-shadow:0 40px 90px -50px rgba(12,80,180,.9)}
.cta-band h2{color:#fff}
.cta-band p{color:rgba(255,255,255,.94)}
.cta-band .btn-light{background:rgba(255,255,255,.96);color:#0B2A5B}
.cta-band .btn-light:hover{background:#fff;color:#0F4C93}
/* ฟุตเตอร์: แถบดำแบบ bt678.ru.com */
.site-footer{margin-top:84px;padding:60px 0 30px;background:#0B0B0B;border-top:0;color:#C7D2E4}
.site-footer h4{color:#8FA6C4}
.foot-about{color:#94A3BB}
.foot-about a{color:#7EB3F5}
.footer-list a{color:#BAC7DB}
.footer-list a:hover{color:#fff}
.footer-bottom{color:#8698B2;border-top:1px solid rgba(255,255,255,.10)}
.footer-bottom a{color:#7EB3F5}
.badge-18{background:rgba(217,58,78,.18);color:#FFA9B4;border-color:rgba(217,58,78,.36)}
/* แถบติดล่าง + ปุ่มเลื่อนขึ้น */
#site-stick{background:linear-gradient(0deg,rgba(255,255,255,.99),rgba(255,255,255,.75) 62%,transparent)}
.stick-card{background:#fff;border-color:rgba(12,80,180,.20);box-shadow:0 24px 50px -28px rgba(12,60,140,.45)}
.stick-label{color:#33415C}
.stick-close{background:rgba(12,80,180,.05);border-color:rgba(12,80,180,.18);color:#5C6E8A}
.stick-close:hover{background:rgba(12,80,180,.12);color:#0F4C93}
#to-top{background:#fff;border-color:rgba(12,80,180,.20);color:#1A6DD1;
  box-shadow:0 18px 40px -24px rgba(12,60,140,.5)}
.search404{background:#F8FBFF;border-color:rgba(12,80,180,.24)}

/* ปุ่ม ghost บนแบนด์ CTA สีน้ำเงิน: ต้องเป็นขอบขาว */
.cta-band .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.38)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.22);color:#fff}