/* ==========================================================================
   PX9.ME — shared design system
   Structure mirrors the reference layout: light surface, dark hero panels,
   pill CTAs, Bootstrap 5.3 + Bootstrap Icons + Sarabun.
   PX9 palette: indigo-violet primary + cyan accent (original to PX9).
   ========================================================================== */
:root{
  --bg:#eef2ff;
  --bg-soft:#e0e7ff;
  --surface:#ffffff;
  --text:#1f2937;
  --heading:#0b1030;
  --muted:#4b5563;
  --primary:#6d5efc;
  --primary-dark:#4f46e5;
  --accent:#22d3ee;
  --on-primary:#ffffff;
  --gold:#fbbf24;
  --border:rgba(11,16,48,0.12);
  --shadow-sm:0 6px 20px rgba(11,16,48,.07);
  --shadow-md:0 14px 40px rgba(11,16,48,.12);
  --shadow-lg:0 22px 60px rgba(11,16,48,.18);
}
*{box-sizing:border-box;margin:0;padding:0;}
body{
  background:var(--bg);color:var(--text);
  font-family:'Sarabun',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:1rem;line-height:1.78;overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--primary-dark);text-decoration:none;transition:color .2s;}
a:hover{color:var(--primary);}
img{max-width:100%;}
h1,h2,h3,h4,h5,h6{color:var(--heading);font-weight:800;line-height:1.3;}

/* ---------- NAVBAR ---------- */
.navbar{background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);padding:.55rem 0;}
.navbar-brand{display:flex;align-items:center;gap:.55rem;font-weight:800;color:var(--heading);font-size:1.35rem;letter-spacing:.5px;}
.navbar-brand:hover{color:var(--primary);}
.brand-mark{
  width:40px;height:40px;border-radius:11px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 55%,#312e81 100%);
  color:#fff;font-weight:800;font-size:1.02rem;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(109,94,252,.4);
}
.nav-link{color:var(--heading);font-weight:500;padding:.5rem .8rem;border-radius:9px;transition:background .2s,color .2s;}
.nav-link:hover,.nav-link.active{background:var(--bg);color:var(--primary);}
.navbar-toggler{border-color:var(--border);}
.navbar-toggler:focus{box-shadow:0 0 0 3px rgba(109,94,252,.2);}

/* ---------- BUTTONS ---------- */
.btn-glow{
  display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 100%);
  color:#fff;font-weight:800;padding:.68rem 1.9rem;border-radius:999px;border:none;
  box-shadow:0 0 22px rgba(109,94,252,.55);
  transition:transform .2s,box-shadow .2s,filter .2s;font-size:1rem;line-height:1.4;
}
.btn-glow:hover{transform:translateY(-3px);box-shadow:0 0 38px rgba(109,94,252,.85);color:#fff;filter:brightness(1.05);}
.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:.4rem;
  background:transparent;color:var(--primary-dark);border:2px solid var(--primary-dark);
  font-weight:800;padding:.6rem 1.7rem;border-radius:999px;transition:all .2s;font-size:1rem;line-height:1.4;
}
.btn-ghost:hover{background:var(--primary-dark);color:#fff;}
.btn-block{width:100%;}

/* ---------- HERO (home) ---------- */
.hero{
  background:linear-gradient(135deg,var(--heading) 0%,#141c53 50%,#1e2a6e 100%);
  position:relative;overflow:hidden;padding:5rem 0 4.2rem;
}
.hero .orb{position:absolute;border-radius:50%;filter:blur(95px);pointer-events:none;}
.hero .orb1{width:520px;height:520px;background:var(--primary);opacity:.34;top:-170px;right:-90px;}
.hero .orb2{width:340px;height:340px;background:var(--accent);opacity:.2;bottom:-100px;left:2%;}
.hero .orb3{width:220px;height:220px;background:var(--gold);opacity:.14;top:38%;left:44%;}
.hero h1{color:#fff;font-size:clamp(1.75rem,4.1vw,2.95rem);font-weight:800;line-height:1.24;}
.hero h1 span{color:var(--accent);}
.hero p{color:rgba(255,255,255,.82);font-size:1.02rem;line-height:1.85;}
.hero-badge{
  display:inline-block;background:rgba(109,94,252,.22);border:1px solid rgba(109,94,252,.5);
  color:#c7c0ff;font-size:.8rem;font-weight:700;padding:.3rem 1rem;border-radius:999px;
  margin-bottom:.9rem;letter-spacing:.05em;
}
.hero-stat{background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.18);border-radius:15px;padding:1rem .9rem;text-align:center;height:100%;}
.hero-stat .n{color:var(--accent);font-size:1.65rem;font-weight:800;line-height:1.15;}
.hero-stat .l{color:rgba(255,255,255,.72);font-size:.84rem;margin-top:.3rem;line-height:1.4;}

/* ---------- HERO (inner pages) ---------- */
.hero-inner{
  background:linear-gradient(135deg,var(--heading) 0%,#0f1745 55%,#1b2568 100%);
  position:relative;overflow:hidden;padding:3.6rem 0 3.2rem;
}
.hero-inner .orb{position:absolute;border-radius:50%;filter:blur(90px);pointer-events:none;}
.hero-inner .orb1{width:420px;height:420px;background:var(--primary);opacity:.3;top:-150px;right:-70px;}
.hero-inner .orb2{width:260px;height:260px;background:var(--accent);opacity:.17;bottom:-90px;left:4%;}
.hero-inner h1{color:#fff;font-size:clamp(1.55rem,3.6vw,2.5rem);font-weight:800;line-height:1.28;}
.hero-inner h1 span{color:var(--accent);}
.hero-inner p.lead{color:rgba(255,255,255,.82);font-size:1rem;max-width:760px;line-height:1.85;}

/* ---------- BREADCRUMB ---------- */
.crumb{
  display:inline-flex;flex-wrap:wrap;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.14);
  padding:.55rem 1.2rem;border-radius:999px;list-style:none;gap:.45rem;font-size:.86rem;margin-bottom:1.3rem;
}
.crumb li{color:rgba(255,255,255,.7);}
.crumb li+li::before{content:'/';margin-right:.45rem;color:rgba(255,255,255,.4);}
.crumb a{color:var(--accent);}

/* ---------- SECTION PRIMITIVES ---------- */
.sec{padding:4.6rem 0;}
.sec-alt{background:var(--bg-soft);}
.sec-white{background:var(--surface);}
.section-label{font-size:.78rem;font-weight:700;letter-spacing:.14em;color:var(--primary-dark);text-transform:uppercase;margin-bottom:.45rem;}
.section-title{font-size:clamp(1.4rem,3vw,2.05rem);font-weight:800;color:var(--heading);margin-bottom:.8rem;}
.divider{width:54px;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));border-radius:4px;margin:1rem 0 1.6rem;}
.divider.mx-auto{margin-left:auto;margin-right:auto;}
.sec-sub{color:var(--muted);max-width:720px;line-height:1.85;}

/* ---------- CARDS ---------- */
.feat-card{
  background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:1.8rem 1.6rem;
  height:100%;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s;
}
.feat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md);}
.feat-icon{
  width:58px;height:58px;border-radius:16px;background:var(--bg);
  display:flex;align-items:center;justify-content:center;font-size:1.65rem;color:var(--primary-dark);margin-bottom:1rem;
}
.feat-card h3,.feat-card h5{font-size:1.06rem;font-weight:800;margin-bottom:.55rem;}
.feat-card p{color:var(--muted);font-size:.94rem;line-height:1.75;flex:1;margin:0;}

.promo-card{background:var(--heading);border-radius:18px;padding:1.8rem;position:relative;overflow:hidden;height:100%;}
.promo-card .pc-glow{position:absolute;width:210px;height:210px;border-radius:50%;background:var(--primary);filter:blur(72px);opacity:.34;top:-60px;right:-60px;}
.promo-card h3,.promo-card h5{color:#fff;font-weight:800;font-size:1.1rem;margin-bottom:.5rem;position:relative;}
.promo-card p{color:rgba(255,255,255,.72);font-size:.93rem;line-height:1.72;margin-bottom:1rem;position:relative;}
.promo-tag{display:inline-block;background:var(--accent);color:#062a33;font-size:.78rem;font-weight:800;padding:.24rem .85rem;border-radius:999px;margin-bottom:.8rem;position:relative;}

/* ---------- STEPS ---------- */
.step-wrap{position:relative;}
.step-wrap::before{content:'';position:absolute;left:29px;top:56px;bottom:56px;width:2px;background:var(--border);}
.step-item{display:flex;gap:1.35rem;margin-bottom:2.1rem;position:relative;}
.step-item:last-child{margin-bottom:0;}
.step-num{
  width:58px;height:58px;border-radius:50%;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;
  font-size:1.2rem;font-weight:800;display:flex;align-items:center;justify-content:center;
  box-shadow:0 0 20px rgba(109,94,252,.42);position:relative;z-index:1;
}
.step-content{padding-top:.5rem;}
.step-content h3,.step-content h5{font-size:1.05rem;font-weight:800;margin-bottom:.3rem;}
.step-content p{font-size:.95rem;line-height:1.75;margin:0;color:var(--muted);}

/* ---------- COMPARE TABLE ---------- */
.compare-table{width:100%;border-collapse:separate;border-spacing:0;background:var(--surface);border:1px solid var(--border);border-radius:16px;overflow:hidden;font-size:.95rem;}
.compare-table th,.compare-table td{padding:.95rem 1.1rem;text-align:left;border-bottom:1px solid var(--border);vertical-align:middle;}
.compare-table thead th{background:var(--heading);color:#fff;font-weight:700;font-size:.92rem;}
.compare-table tbody tr:last-child td{border-bottom:none;}
.compare-table tbody tr:nth-child(even){background:rgba(224,231,255,.34);}
.compare-table .yes{color:#059669;font-weight:700;}
.compare-table .no{color:#dc2626;font-weight:700;}

/* ---------- PAYMENT ---------- */
.pay-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:1.35rem 1.45rem;display:flex;align-items:center;gap:1rem;height:100%;transition:box-shadow .2s;}
.pay-card:hover{box-shadow:var(--shadow-sm);}
.pay-icon{width:50px;height:50px;border-radius:12px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:1.35rem;color:var(--primary-dark);flex-shrink:0;}
.pay-content h3,.pay-content h6{font-size:.98rem;font-weight:700;margin-bottom:.12rem;}
.pay-content p{color:var(--muted);font-size:.87rem;margin:0;line-height:1.55;}

/* ---------- REVIEW ---------- */
.review-card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:1.6rem;height:100%;display:flex;flex-direction:column;}
.review-stars{color:var(--gold);font-size:.95rem;margin-bottom:.7rem;}
.review-card p{color:var(--text);font-size:.94rem;line-height:1.78;flex:1;}
.review-who{display:flex;align-items:center;gap:.7rem;margin-top:1rem;padding-top:.9rem;border-top:1px solid var(--border);}
.review-av{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;}
.review-who .nm{font-weight:700;font-size:.92rem;color:var(--heading);}
.review-who .mt{font-size:.8rem;color:var(--muted);}

/* ---------- CONTENT ARTICLE ---------- */
.article{background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:2.4rem 2.2rem;box-shadow:var(--shadow-sm);}
.article h2{font-size:clamp(1.22rem,2.4vw,1.58rem);margin:2.3rem 0 .85rem;padding-top:1.5rem;border-top:1px solid var(--border);}
.article h2:first-of-type{margin-top:1.2rem;border-top:none;padding-top:0;}
.article h3{font-size:1.1rem;margin:1.7rem 0 .6rem;color:var(--primary-dark);}
.article p{margin-bottom:1.05rem;line-height:1.88;}
.article ul,.article ol{margin:0 0 1.15rem 1.35rem;}
.article li{margin-bottom:.5rem;line-height:1.8;}
.article .toc{background:var(--bg);border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:14px;padding:1.3rem 1.5rem;margin-bottom:1.8rem;}
.article .toc h2{font-size:1.02rem;margin:0 0 .6rem;border:none;padding:0;color:var(--heading);}
.article .toc ul{margin:0 0 0 1.15rem;}
.article .toc li{margin-bottom:.35rem;font-size:.94rem;}
.article .note{background:rgba(34,211,238,.09);border:1px solid rgba(34,211,238,.34);border-radius:13px;padding:1rem 1.2rem;margin:1.3rem 0;font-size:.94rem;}
.article .warn{background:rgba(251,191,36,.12);border:1px solid rgba(251,191,36,.42);border-radius:13px;padding:1rem 1.2rem;margin:1.3rem 0;font-size:.94rem;}
.article table{width:100%;border-collapse:collapse;margin:1.3rem 0;font-size:.93rem;border:1px solid var(--border);border-radius:12px;overflow:hidden;}
.article table th,.article table td{padding:.8rem .95rem;border-bottom:1px solid var(--border);text-align:left;}
.article table thead th{background:var(--heading);color:#fff;font-weight:700;}
.article table tbody tr:nth-child(even){background:var(--bg);}
.article .byline{display:flex;flex-wrap:wrap;gap:1rem;align-items:center;font-size:.85rem;color:var(--muted);margin-bottom:1.4rem;padding-bottom:1.2rem;border-bottom:1px solid var(--border);}
.article .page-foot{margin-top:2rem;padding-top:1.2rem;border-top:1px solid var(--border);font-size:.86rem;color:var(--muted);line-height:1.8;}

/* ---------- FAQ ---------- */
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:14px;margin-bottom:.9rem;overflow:hidden;}
.faq-item .accordion-button{background:var(--surface);color:var(--heading);font-weight:700;font-size:.98rem;padding:1.1rem 1.4rem;box-shadow:none;}
.faq-item .accordion-button:not(.collapsed){color:var(--primary-dark);background:var(--bg);border-bottom:1px solid var(--border);}
.faq-item .accordion-body{padding:1.1rem 1.4rem;color:var(--text);font-size:.95rem;line-height:1.85;background:var(--surface);}
.faq-item h3.accordion-header{margin:0;font-size:1rem;}
/* FAQ แบบ custom collapse ใช้ <div class="accordion-header"> (บาคาร่า/ไฮโล/เล่นอย่างรับผิดชอบ) */
.faq-item > div.accordion-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.1rem 1.4rem;cursor:pointer;}
.faq-item > div.accordion-header h3{margin:0;font-size:.98rem;font-weight:700;color:var(--heading);line-height:1.6;}
.faq-item > div.accordion-header i{flex:0 0 auto;color:var(--primary-dark);transition:transform .25s ease;}
.faq-item > div.accordion-header[aria-expanded="false"] i{transform:rotate(-90deg);}
.faq-item > div.accordion-header[aria-expanded="true"] h3{color:var(--primary-dark);}
.faq-item > div.accordion-header[aria-expanded="true"]{border-bottom:1px solid var(--border);background:var(--bg);}
.faq-item > .collapse > p{margin:0;padding:1.1rem 1.4rem;color:var(--text);font-size:.95rem;line-height:1.85;}

/* ---------- REGISTER FORM ---------- */
.register-card{background:var(--surface);border-radius:22px;box-shadow:var(--shadow-lg);padding:2.4rem 2.1rem;border:1px solid var(--border);}
.register-card h2{font-size:1.35rem;font-weight:800;margin-bottom:.35rem;}
.register-card .sub{color:var(--muted);font-size:.92rem;margin-bottom:1.7rem;}
.form-label-th{color:var(--heading);font-weight:600;font-size:.93rem;margin-bottom:.35rem;display:block;}
.form-control-th{
  width:100%;padding:.74rem 1rem;border:1.5px solid var(--border);border-radius:12px;
  font-family:'Sarabun',sans-serif;font-size:.97rem;color:var(--text);background:var(--surface);
  transition:border-color .2s,box-shadow .2s;outline:none;
}
.form-control-th:focus{border-color:var(--primary);box-shadow:0 0 0 3px rgba(109,94,252,.18);}
.input-group-th{position:relative;}
.input-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:1rem;pointer-events:none;}
.form-control-th.has-icon{padding-left:2.6rem;}
.submit-btn{
  width:100%;padding:.86rem;background:linear-gradient(135deg,var(--primary),var(--primary-dark));color:#fff;
  font-weight:800;font-size:1.04rem;border:none;border-radius:12px;cursor:pointer;
  box-shadow:0 0 24px rgba(109,94,252,.5);transition:transform .2s,box-shadow .2s;font-family:'Sarabun',sans-serif;
}
.submit-btn:hover{transform:translateY(-2px);box-shadow:0 0 36px rgba(109,94,252,.8);}
.divider-or{display:flex;align-items:center;gap:.8rem;margin:1.2rem 0;}
.divider-or::before,.divider-or::after{content:'';flex:1;height:1px;background:var(--border);}
.divider-or span{color:var(--muted);font-size:.85rem;white-space:nowrap;}
.terms-check{display:flex;align-items:flex-start;gap:.6rem;font-size:.88rem;color:var(--muted);}
.terms-check input{margin-top:.25rem;accent-color:var(--primary);}
.bonus-strip{background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:14px;padding:1.05rem 1.4rem;display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;}
.bonus-strip .bs-icon{font-size:1.75rem;color:#fff;}
.bonus-strip strong{display:block;color:#fff;font-weight:800;font-size:1rem;}
.bonus-strip span{color:rgba(255,255,255,.85);font-size:.87rem;}

/* ---------- CTA BAND ---------- */
.cta-band{background:linear-gradient(135deg,var(--primary-dark) 0%,#312e81 60%,var(--heading) 100%);border-radius:22px;padding:2.6rem 2.2rem;position:relative;overflow:hidden;text-align:center;}
.cta-band::after{content:'';position:absolute;width:300px;height:300px;border-radius:50%;background:var(--accent);filter:blur(90px);opacity:.2;top:-120px;right:-60px;}
.cta-band h2{color:#fff;font-size:clamp(1.3rem,2.8vw,1.9rem);margin-bottom:.7rem;position:relative;}
.cta-band p{color:rgba(255,255,255,.82);max-width:660px;margin:0 auto 1.5rem;position:relative;}

/* ---------- FOOTER ---------- */
footer{background:var(--heading);color:rgba(255,255,255,.72);padding:3.4rem 0 1.5rem;margin-top:0;}
footer .footer-brand{display:flex;align-items:center;gap:.55rem;font-weight:800;color:#fff;font-size:1.3rem;margin-bottom:.9rem;}
footer p{font-size:.91rem;line-height:1.78;}
footer .footer-title{color:#fff;font-weight:700;font-size:1rem;margin-bottom:.9rem;}
footer ul{list-style:none;padding:0;}
footer ul li{margin-bottom:.45rem;}
footer ul li a{color:rgba(255,255,255,.66);font-size:.91rem;}
footer ul li a:hover{color:var(--accent);}
footer .footer-bottom{border-top:1px solid rgba(255,255,255,.11);margin-top:2.4rem;padding-top:1.2rem;font-size:.85rem;color:rgba(255,255,255,.48);line-height:1.8;}
footer .footer-bottom a{color:rgba(255,255,255,.6);}
footer .age-badge{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;border:2px solid rgba(255,255,255,.3);font-weight:800;font-size:.82rem;color:#fff;margin-right:.5rem;}

/* ---------- STICKY MOBILE CTA ---------- */
.sticky-cta{
  position:fixed;bottom:0;left:0;width:100%;z-index:1040;background:transparent;padding:14px;pointer-events:none;
}
.sticky-cta .wrap{display:flex;gap:10px;pointer-events:auto;max-width:520px;margin:0 auto;filter:drop-shadow(0 10px 24px rgba(0,0,0,.38));}
.sticky-cta .btn{
  flex:1;display:inline-flex;align-items:center;justify-content:center;height:56px;border-radius:999px;
  font-weight:800;font-size:15px;border:2px solid rgba(255,255,255,.35);
}
.sticky-cta .btn-reg{flex:1.7;background:linear-gradient(135deg,var(--primary) 0%,var(--primary-dark) 55%,#4338ca 100%);color:#fff;box-shadow:0 10px 26px rgba(109,94,252,.45);}
.sticky-cta .btn-log{background:linear-gradient(135deg,#0ea5e9,#22d3ee);color:#062a33;border-color:rgba(255,255,255,.45);}
.sticky-cta .btn-reg:hover,.sticky-cta .btn-log:hover{color:inherit;transform:translateY(-2px);}
@media(min-width:992px){.sticky-cta{display:none;}}
body{padding-bottom:0;}
@media(max-width:991.98px){body{padding-bottom:86px;}.step-wrap::before{display:none;}}

/* ---------- MISC ---------- */
.chip{display:inline-block;background:var(--surface);border:1px solid var(--border);border-radius:999px;padding:.35rem .95rem;font-size:.86rem;font-weight:600;color:var(--heading);margin:.22rem;}
.badge-soft{display:inline-block;background:rgba(109,94,252,.12);color:var(--primary-dark);font-size:.78rem;font-weight:700;padding:.25rem .8rem;border-radius:999px;}
.kpi-row{display:flex;flex-wrap:wrap;gap:.6rem;margin-top:1rem;}
.kpi{background:var(--surface);border:1px solid var(--border);border-radius:13px;padding:.75rem 1.1rem;text-align:center;flex:1;min-width:110px;}
.kpi .n{font-size:1.35rem;font-weight:800;color:var(--primary-dark);line-height:1.2;}
.kpi .l{font-size:.8rem;color:var(--muted);}
.visual{
  border-radius:18px;padding:2.2rem 1.6rem;text-align:center;color:#fff;position:relative;overflow:hidden;
  background:linear-gradient(135deg,var(--heading) 0%,#1c2563 55%,var(--primary-dark) 100%);
  box-shadow:var(--shadow-md);
}
.visual i{font-size:3.1rem;color:var(--accent);}
.visual h3{color:#fff;font-size:1.15rem;margin-top:.8rem;}
.visual p{color:rgba(255,255,255,.75);font-size:.9rem;margin:0;line-height:1.7;}
.skip-link{position:absolute;left:-9999px;}
.skip-link:focus{left:1rem;top:1rem;background:#fff;padding:.5rem 1rem;border-radius:8px;z-index:2000;}