/* PU31 — pu31.pro  |  Design system (ธีมฟ้า-ขาว โทนเดียวกับเว็บตัวอย่าง) */
:root{
  --bg:#e5f3ff; --surface:#ffffff; --text:#111827; --heading:#0b1220; --muted:#475569;
  --primary:#38bdf8; --primary-dk:#0ea5e9; --on-primary:#04141f; --accent:#38bdf8;
  --border:rgba(2,6,23,.12); --line:rgba(2,6,23,.08);
  --green:#22c55e; --red:#ef4444; --gold:#f59e0b;
  --r-sm:10px; --r:16px; --r-lg:20px; --r-pill:999px;
  --sh-sm:0 2px 12px rgba(2,6,23,.07); --sh:0 12px 36px rgba(56,189,248,.18); --sh-lg:0 18px 50px rgba(2,6,23,.16);
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:'Sarabun','Noto Sans Thai',system-ui,-apple-system,'Segoe UI',sans-serif;font-size:1rem;line-height:1.75;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:var(--primary);text-decoration:none;transition:color .2s}
a:hover{color:var(--primary-dk)}
strong,b{font-weight:700}
h1,h2,h3,h4,h5,h6{color:var(--heading);line-height:1.28;font-weight:800}
ul,ol{padding-left:1.35rem}

/* ---------- layout ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:1.15rem}
.grid{display:grid;gap:1.25rem}
.g-2{gap:.75rem}.g-3{gap:1.25rem}.g-4{gap:1.75rem}
.cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.center{text-align:center}
.mt-1{margin-top:.6rem}.mt-2{margin-top:1.2rem}.mt-3{margin-top:2rem}.mt-4{margin-top:3rem}
.mb-1{margin-bottom:.6rem}.mb-2{margin-bottom:1.2rem}.mb-3{margin-bottom:2rem}
.sec{padding:4.25rem 0}
.sec-alt{background:var(--surface)}
.sec-dark{background:var(--heading);color:rgba(255,255,255,.78)}
.sec-dark h2,.sec-dark h3,.sec-dark h4,.sec-dark .title{color:#fff}
.sec-dark .label{color:#7dd3fc}
.sec-soft{background:linear-gradient(160deg,#ffffff 0%,#eef8ff 100%)}
.label{font-size:.78rem;font-weight:700;letter-spacing:.12em;color:var(--primary);text-transform:uppercase;margin-bottom:.45rem}
.title{font-size:clamp(1.55rem,3.4vw,2.35rem);margin-bottom:.85rem}
.title-sm{font-size:clamp(1.25rem,2.4vw,1.6rem)}
.sub{color:var(--muted);font-size:1.05rem;max-width:660px}
.sec-dark .sub{color:rgba(255,255,255,.65)}
.divider{width:56px;height:4px;background:var(--primary);border-radius:4px;margin:1rem 0 1.6rem}
.center .divider{margin-inline:auto}
.lead{font-size:1.12rem;color:var(--muted)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:700;font-size:1rem;padding:.72rem 1.75rem;border-radius:var(--r-pill);border:2px solid transparent;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s;text-align:center}
.btn-primary{background:var(--primary);color:var(--on-primary);box-shadow:0 0 26px rgba(56,189,248,.55)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 0 40px rgba(56,189,248,.85);color:var(--on-primary)}
.btn-outline{background:transparent;color:#fff;border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:var(--on-primary)}
.btn-dark{background:var(--heading);color:#fff}
.btn-dark:hover{background:#16233d;color:#fff}
.btn-lg{padding:.9rem 2.3rem;font-size:1.08rem}
.btn-block{display:flex;width:100%}
.btn-ghost{background:var(--surface);color:var(--heading);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-row{display:flex;flex-wrap:wrap;gap:.85rem}

/* ---------- marquee ---------- */
.marquee{background:var(--heading);overflow:hidden;padding:.45rem 0}
.marquee-inner{display:flex;white-space:nowrap;animation:marquee 42s linear infinite}
.marquee-inner span{padding:0 2.5rem;color:#fff;font-size:.88rem;font-weight:500}
.marquee-inner span em{color:var(--primary);font-style:normal;font-weight:700}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* ---------- navbar ---------- */
.navbar{position:sticky;top:0;z-index:1000;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--sh-sm)}
.nav-inner{display:flex;align-items:center;gap:1rem;min-height:66px}
.brand{display:flex;align-items:center;gap:.6rem;font-weight:800;font-size:1.35rem;color:var(--heading);letter-spacing:.02em}
.brand:hover{color:var(--heading)}
.brand-mark{width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,var(--primary),#7dd3fc);color:var(--on-primary);display:flex;align-items:center;justify-content:center;font-weight:900;font-size:1rem;box-shadow:0 0 18px rgba(56,189,248,.5)}
.brand small{display:block;font-size:.66rem;font-weight:600;color:var(--muted);letter-spacing:.14em;text-transform:uppercase;line-height:1}
.nav-links{display:flex;align-items:center;gap:.15rem;margin-left:auto;flex-wrap:wrap}
.nav-links a{color:var(--heading);font-weight:600;font-size:.95rem;padding:.45rem .8rem;border-radius:var(--r-sm);white-space:nowrap}
.nav-links a:hover{background:var(--bg);color:var(--primary)}
.nav-links a.is-active{background:var(--bg);color:var(--primary)}
.nav-cta{display:flex;gap:.6rem;margin-left:.6rem}
.nav-cta .btn{padding:.55rem 1.25rem;font-size:.93rem}
.nav-toggle{display:none;margin-left:auto;background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);width:44px;height:42px;font-size:1.3rem;color:var(--heading);cursor:pointer}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;background:var(--heading);color:#fff;padding:5rem 0 4.5rem}
.hero-bg{position:absolute;inset:0;background:linear-gradient(135deg,#0b1220 0%,#0c2340 52%,#0b3a5c 100%)}
.orb{position:absolute;border-radius:50%;filter:blur(80px);opacity:.5;animation:orb 8s ease-in-out infinite}
.orb.o1{width:460px;height:460px;background:var(--primary);top:-120px;right:-80px}
.orb.o2{width:320px;height:320px;background:#0ea5e9;bottom:-70px;left:4%;animation-delay:-3s}
@keyframes orb{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-28px) scale(1.06)}}
.hero .container{position:relative;z-index:2}
.hero h1{color:#fff;font-size:clamp(1.85rem,4.6vw,3.15rem);margin-bottom:1.1rem;text-shadow:0 2px 24px rgba(0,0,0,.4)}
.hero h1 span{color:var(--primary)}
.hero .lead{color:rgba(255,255,255,.83);max-width:600px;margin-bottom:1.9rem;font-size:1.14rem}
.hero-badge{display:inline-block;background:rgba(56,189,248,.18);border:1px solid rgba(56,189,248,.45);color:#7dd3fc;font-size:.8rem;font-weight:700;padding:.3rem 1rem;border-radius:var(--r-pill);margin-bottom:1rem;letter-spacing:.04em}
.hero-split{display:grid;grid-template-columns:1.15fr .85fr;gap:2.5rem;align-items:center}
.hero-stats{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem}
.hero-stat{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:1.1rem;backdrop-filter:blur(4px)}
.hero-stat b{display:block;font-size:1.7rem;color:var(--primary);line-height:1.1}
.hero-stat span{font-size:.85rem;color:rgba(255,255,255,.72)}

/* ---------- promo strip ---------- */
.promo-strip{padding:2.5rem 0;background:var(--surface);border-bottom:1px solid var(--line)}
.promo-card{border-radius:var(--r-lg);padding:1.9rem 1.7rem;background:linear-gradient(120deg,var(--primary),#7dd3fc);color:var(--on-primary);position:relative;overflow:hidden;min-height:150px;display:flex;flex-direction:column;justify-content:center}
.promo-card.alt{background:linear-gradient(120deg,#0ea5e9,#38bdf8)}
.promo-card.alt2{background:linear-gradient(120deg,#0369a1,#0ea5e9);color:#fff}
.promo-card h3{color:inherit;font-size:1.35rem;margin-bottom:.4rem}
.promo-card p{font-size:.95rem;color:inherit;opacity:.9}
.promo-card .tag{display:inline-block;background:rgba(0,0,0,.14);border-radius:var(--r-pill);padding:.25rem .85rem;font-size:.78rem;font-weight:800;margin-bottom:.7rem;letter-spacing:.04em}
.promo-card i.big{position:absolute;right:1.2rem;bottom:-12px;font-size:4.4rem;opacity:.16}

/* ---------- cards ---------- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);padding:1.7rem 1.5rem;height:100%;transition:transform .25s,box-shadow .25s}
.card:hover{transform:translateY(-6px);box-shadow:var(--sh)}
.card h3,.card h4{font-size:1.1rem;margin-bottom:.5rem}
.card p,.card li{color:var(--muted);font-size:.95rem}
.ico{width:54px;height:54px;border-radius:14px;background:var(--bg);display:flex;align-items:center;justify-content:center;font-size:1.55rem;color:var(--primary);margin-bottom:.95rem;font-weight:800}
.ico.g{background:rgba(34,197,94,.12);color:var(--green)}
.ico.o{background:rgba(245,158,11,.14);color:var(--gold)}
.ico.r{background:rgba(239,68,68,.12);color:var(--red)}
.pill{display:inline-block;background:var(--bg);border:1px solid var(--border);color:var(--primary);font-size:.8rem;font-weight:700;padding:.26rem .85rem;border-radius:var(--r-pill);margin:.2rem .25rem .2rem 0}

/* ---------- game cards ---------- */
.game-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,box-shadow .25s}
.game-card:hover{transform:translateY(-6px);box-shadow:var(--sh-lg)}
.game-top{background:linear-gradient(120deg,#0b1220,#0c3a5c);color:#fff;padding:1.5rem;position:relative;min-height:120px;display:flex;align-items:center;gap:1rem}
.game-top i{font-size:2.6rem;color:var(--primary)}
.game-top h3{color:#fff;font-size:1.2rem;margin:0}
.game-top small{color:rgba(255,255,255,.7);font-size:.85rem}
.game-body{padding:1.4rem 1.5rem;flex:1;display:flex;flex-direction:column}
.game-body p{color:var(--muted);font-size:.95rem;flex:1}
.game-meta{display:flex;flex-wrap:wrap;gap:.4rem;margin-top:.9rem}
.live-badge{background:var(--red);color:#fff;font-size:.74rem;font-weight:800;padding:.24rem .7rem;border-radius:var(--r-pill);display:inline-flex;align-items:center;gap:.35rem;letter-spacing:.05em}
.dot{width:8px;height:8px;background:#fff;border-radius:50%;animation:blink 1s ease-in-out infinite}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.2}}

/* ---------- steps ---------- */
.step{text-align:center;padding:1.2rem .8rem;position:relative}
.step .n{width:62px;height:62px;border-radius:50%;background:var(--primary);color:var(--on-primary);font-size:1.5rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 1.1rem;box-shadow:0 0 22px rgba(56,189,248,.5)}
.step h4{font-size:1.05rem;margin-bottom:.4rem}
.step p{color:var(--muted);font-size:.93rem}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:var(--r);border:1px solid var(--border);background:var(--surface)}
table.tbl{width:100%;border-collapse:collapse;min-width:560px}
table.tbl thead{background:var(--primary)}
table.tbl thead th{color:var(--on-primary);font-weight:700;padding:.95rem 1.05rem;text-align:left;font-size:.95rem}
table.tbl td{padding:.8rem 1.05rem;border-top:1px solid var(--line);font-size:.95rem;vertical-align:top}
table.tbl tbody tr:nth-child(even){background:var(--bg)}
table.tbl td strong{color:var(--heading)}
.yes{color:var(--green);font-weight:800}
.no{color:var(--red);font-weight:800}
.tbl-note{font-size:.86rem;color:var(--muted);margin-top:.7rem}

/* ---------- FAQ ---------- */
.faq{display:grid;gap:.75rem}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);overflow:hidden;transition:box-shadow .2s}
.faq details[open]{box-shadow:var(--sh);border-color:rgba(56,189,248,.55)}
.faq summary{cursor:pointer;padding:1.05rem 1.25rem;font-weight:700;color:var(--heading);list-style:none;display:flex;gap:.8rem;align-items:flex-start;font-size:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::before{content:"?";flex:0 0 26px;height:26px;border-radius:50%;background:var(--primary);color:var(--on-primary);font-size:.85rem;font-weight:800;display:flex;align-items:center;justify-content:center;margin-top:.15rem}
.faq summary::after{content:"+";margin-left:auto;color:var(--primary);font-weight:800;font-size:1.25rem;line-height:1}
.faq details[open] summary::after{content:"–"}
.faq .ans{padding:0 1.25rem 1.2rem 3.35rem;color:var(--muted);font-size:.97rem}
.faq .ans p{margin-bottom:.6rem}

/* ---------- article / prose ---------- */
.prose{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:2.2rem 2rem}
.prose h2{font-size:clamp(1.3rem,2.5vw,1.7rem);margin:2.4rem 0 .9rem;scroll-margin-top:90px}
.prose h2:first-of-type{margin-top:0}
.prose h3{font-size:1.12rem;margin:1.6rem 0 .6rem;color:var(--heading)}
.prose p{margin-bottom:1.05rem;color:#1f2937}
.prose ul,.prose ol{margin:0 0 1.1rem 1.1rem;color:#1f2937}
.prose li{margin-bottom:.45rem}
.prose .table-wrap{margin:1.4rem 0}
.toc{background:var(--bg);border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:var(--r);padding:1.3rem 1.5rem;margin-bottom:1.8rem}
.toc strong{display:block;color:var(--heading);margin-bottom:.6rem;font-size:1rem}
.toc ol{margin:0 0 0 1.1rem}
.toc a{font-weight:600;font-size:.95rem}
.note{background:var(--bg);border:1px solid var(--border);border-left:4px solid var(--primary);border-radius:var(--r);padding:1.2rem 1.4rem;margin:1.6rem 0}
.note i{color:var(--primary);margin-right:.45rem}
.note p{margin:0;color:var(--muted);font-size:.94rem}
cite,.src{font-size:.85rem;color:var(--muted);font-style:normal}

/* ---------- breadcrumb ---------- */
.crumb{background:var(--surface);border-bottom:1px solid var(--line);padding:.75rem 0;font-size:.88rem;color:var(--muted)}
.crumb ol{display:flex;flex-wrap:wrap;gap:.45rem;list-style:none;padding:0;margin:0}
.crumb li+li::before{content:"›";margin-right:.45rem;color:var(--muted)}
.crumb a{color:var(--muted)}
.crumb a:hover{color:var(--primary)}
.crumb [aria-current]{color:var(--heading);font-weight:600}

/* ---------- testimonials ---------- */
.testi{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);padding:1.7rem 1.55rem;height:100%}
.stars{color:var(--gold);margin-bottom:.7rem;letter-spacing:.1em}
.testi p{color:#1f2937;font-size:.96rem;margin-bottom:1.1rem}
.who{display:flex;align-items:center;gap:.85rem}
.avatar{width:46px;height:46px;border-radius:50%;background:var(--bg);border:2px solid var(--primary);display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--primary)}
.who b{display:block;font-size:.95rem;color:var(--heading)}
.who span{font-size:.82rem;color:var(--muted)}

/* ---------- payment ---------- */
.pay{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:var(--r);padding:1.35rem .9rem;text-align:center;transition:all .25s}
.pay:hover{background:rgba(56,189,248,.16);border-color:var(--primary);transform:translateY(-4px)}
.pay i{font-size:2rem;color:rgba(255,255,255,.5)}
.pay:hover i{color:var(--primary)}
.pay b{display:block;color:#fff;font-size:.93rem;margin:.5rem 0 .25rem}
.pay span{background:rgba(56,189,248,.25);color:#7dd3fc;font-size:.74rem;font-weight:700;padding:.18rem .65rem;border-radius:var(--r-pill)}

/* ---------- CTA band ---------- */
.cta-band{background:linear-gradient(120deg,#0b1220,#0c3a5c);color:#fff;border-radius:var(--r-lg);padding:2.6rem 2rem;text-align:center;position:relative;overflow:hidden}
.cta-band h2{color:#fff;margin-bottom:.7rem}
.cta-band p{color:rgba(255,255,255,.78);max-width:640px;margin:0 auto 1.6rem}

/* ---------- footer ---------- */
footer{background:var(--heading);color:rgba(255,255,255,.72);padding:3.4rem 0 6.5rem;font-size:.93rem}
footer h4{color:#fff;font-size:1rem;margin-bottom:.95rem}
footer ul{list-style:none;padding:0;margin:0}
footer li{margin-bottom:.45rem}
footer a{color:rgba(255,255,255,.66)}
footer a:hover{color:var(--primary)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:2rem}
.foot-note{border-top:1px solid rgba(255,255,255,.12);margin-top:2.3rem;padding-top:1.2rem;font-size:.84rem;color:rgba(255,255,255,.5);line-height:1.7}
.badge18{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;border-radius:50%;border:2px solid rgba(255,255,255,.4);font-size:.78rem;font-weight:800;color:#fff}

/* ---------- sticky CTA ---------- */
.sticky-cta{position:fixed;left:0;right:0;bottom:0;z-index:1200;padding:.7rem 1rem calc(.7rem + env(safe-area-inset-bottom));background:linear-gradient(180deg,rgba(11,18,32,0),rgba(11,18,32,.92) 55%);pointer-events:none}
.sticky-cta .inner{display:flex;gap:.6rem;max-width:460px;margin-inline:auto;pointer-events:auto}
.sticky-cta .btn{flex:1;height:54px;padding:0;font-size:1rem}
.sticky-cta .btn:first-child{flex:1.8;background:linear-gradient(135deg,#7cffcb,#00f5a0 35%,#38bdf8);color:#04141f;border-color:rgba(255,255,255,.4);font-weight:900;box-shadow:0 8px 24px rgba(0,245,160,.35)}

/* ---------- misc ---------- */
.txt{color:#1f2937}
.muted{color:var(--muted)}
.small{font-size:.95rem}
.tiny{font-size:.86rem}
.skip{position:absolute;left:-9999px}
.skip:focus{left:1rem;top:1rem;background:#fff;padding:.6rem 1rem;border-radius:8px;z-index:2000}

/* ---------- responsive ---------- */
@media (max-width:992px){
  .hero-split{grid-template-columns:1fr;gap:2rem}
  .cols-3,.cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-toggle{display:block}
  .nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--surface);border-bottom:1px solid var(--border);box-shadow:var(--sh-sm);padding:.8rem 1.15rem 1.1rem;flex-direction:column;align-items:stretch;margin:0}
  .nav-links.open{display:flex}
  .nav-links a{padding:.6rem .8rem}
  .nav-cta{display:none}
}
@media (max-width:640px){
  .sec{padding:3rem 0}
  .cols-2,.cols-3,.cols-4{grid-template-columns:1fr}
  .hero{padding:3.4rem 0 3.2rem}
  .hero-stats{grid-template-columns:1fr 1fr}
  .prose{padding:1.5rem 1.15rem}
  .foot-grid{grid-template-columns:1fr}
  .btn-row .btn{width:100%}
}
@media print{.navbar,.sticky-cta,.marquee,footer{display:none}}