/* U31W — ธีมดำ-ทอง (อ้างพาเลตต์จาก u31.com: #ffbb5a / #895415 / #c61101) · มุมเหลี่ยม ไม่มีฟอนต์ภายนอก */
:root{
  --bg:#14120f; --bg2:#1b1813; --panel:#211d17; --panel2:#292420; --line:#3a3428; --line2:#4c442e;
  --gold:#ffbb5a; --gold-h:#ffbf00; --gold-l:#dfc057; --gold-d:#895415; --gold-dd:#945e1c;
  --red:#c61101; --red-l:#942416;
  --text:#f4efe6; --muted:#b9b0a1; --dim:#8d8577;
  --max:1160px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:16px/1.75 Arial,Tahoma,"Noto Sans Thai","Leelawadee UI",sans-serif;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--gold);text-decoration:none}
a:hover{color:var(--gold-h)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 16px}
h1,h2,h3,h4{line-height:1.4;font-weight:700}
h1{font-size:clamp(26px,4.4vw,42px);letter-spacing:-.2px}
h2{font-size:clamp(21px,3vw,29px);margin-bottom:14px}
h3{font-size:19px}
p{margin-bottom:14px}
strong{color:var(--gold-l)}

/* ---------- topbar ---------- */
.topbar{background:linear-gradient(90deg,var(--gold-d),#6d3f0e);color:#fff6e3;font-size:13px}
.topbar .wrap{display:flex;gap:14px;align-items:center;justify-content:space-between;min-height:34px;flex-wrap:wrap}
.topbar b{color:#ffe6ae}
header.site{position:sticky;top:0;z-index:60;background:rgba(20,18,15,.96);border-bottom:1px solid var(--line);backdrop-filter:blur(6px)}
header.site .wrap{display:flex;align-items:center;gap:18px;min-height:70px}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand img{height:44px;width:auto}
nav.main{margin-left:auto;display:flex;gap:2px;align-items:center;flex-wrap:wrap}
nav.main a{color:var(--text);font-size:15px;padding:10px 11px;border-bottom:2px solid transparent;white-space:nowrap}
nav.main a:hover{color:var(--gold);border-bottom-color:var(--gold-d)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:700;font-size:15px;
  padding:12px 20px;border:0;border-radius:0;cursor:pointer;line-height:1.2;text-align:center}
.btn-gold{background:linear-gradient(180deg,var(--gold),var(--gold-l));color:#241c0e;box-shadow:0 2px 0 var(--gold-d)}
.btn-gold:hover{background:linear-gradient(180deg,var(--gold-h),var(--gold));color:#241c0e}
.btn-out{background:transparent;color:var(--gold);border:1px solid var(--gold-d)}
.btn-out:hover{background:rgba(255,187,90,.1);color:var(--gold-h)}
.btn-red{background:linear-gradient(180deg,#e5224f,var(--red));color:#fff}
.btn-sm{padding:9px 14px;font-size:14px}
.btn-lg{padding:15px 30px;font-size:17px}
.btn-block{display:flex;width:100%}
header.site .btn{margin-left:8px}

/* ---------- hero ---------- */
.hero{position:relative;background:
  radial-gradient(1100px 420px at 12% -10%,rgba(255,187,90,.16),transparent 60%),
  radial-gradient(800px 380px at 88% 0%,rgba(198,17,1,.16),transparent 60%),
  linear-gradient(180deg,var(--bg2),var(--bg));
  border-bottom:1px solid var(--line);padding:44px 0 40px;overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.35fr .95fr;gap:34px;align-items:center}
.hero h1{margin:10px 0 12px}
.hero .lede{color:var(--muted);font-size:17px;max-width:60ch}
.hero .cta-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:22px}
.hero-art{border:1px solid var(--line);background:linear-gradient(160deg,var(--panel),#191510);padding:22px}
.hero-art .big{font-size:44px;font-weight:700;color:var(--gold);letter-spacing:2px;line-height:1}
.hero-art .sub{color:var(--muted);font-size:14px;margin-top:6px}
.hero-art ul{list-style:none;margin-top:16px;display:grid;gap:9px}
.hero-art li{display:flex;gap:10px;font-size:15px;color:#e7dfd2;border-top:1px dashed var(--line);padding-top:9px}
.hero-art li i{color:var(--gold);font-style:normal}
.pill{display:inline-block;font-size:12px;letter-spacing:1px;text-transform:uppercase;color:#241c0e;
  background:var(--gold);padding:4px 10px;font-weight:700}
.pill-red{background:var(--red);color:#fff}
.pill-line{background:transparent;border:1px solid var(--gold-d);color:var(--gold)}
.live{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:#ffd9d3}
.live s{width:8px;height:8px;background:var(--red);display:inline-block;animation:blink 1.4s infinite}
@keyframes blink{50%{opacity:.25}}

/* ---------- blocks ---------- */
section.blk{padding:44px 0;border-bottom:1px solid var(--line)}
section.blk.alt{background:var(--bg2)}
.crumbs{font-size:13px;color:var(--dim);padding:14px 0 0}
.crumbs a{color:var(--muted)}
.crumbs span{color:var(--gold)}
.sec-head{max-width:70ch;margin-bottom:22px}
.sec-head p{color:var(--muted)}
.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--panel);border:1px solid var(--line);padding:20px}
.card:hover{border-color:var(--gold-d);background:var(--panel2)}
.card h3{margin-bottom:8px;color:var(--gold)}
.card p{color:var(--muted);font-size:15px;margin:0}
.card .ico{width:38px;height:38px;border:1px solid var(--gold-d);display:flex;align-items:center;justify-content:center;
  color:var(--gold);font-weight:700;margin-bottom:12px}
.facts{display:grid;gap:1px;background:var(--line);border:1px solid var(--line);grid-template-columns:repeat(4,1fr)}
.facts div{background:var(--panel);padding:16px}
.facts b{display:block;color:var(--gold);font-size:17px;margin-bottom:4px}
.facts span{color:var(--muted);font-size:13px}
.prose{max-width:76ch}
.prose h2{margin:30px 0 12px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.prose h2:first-child{margin-top:0}
.prose ul,.prose ol{margin:0 0 16px 22px}
.prose li{margin-bottom:8px}
.prose li::marker{color:var(--gold)}
.listbox{background:var(--panel);border-left:3px solid var(--gold);padding:16px 20px;margin:0 0 18px}
.listbox h3{color:var(--gold);font-size:16px;margin-bottom:10px;text-transform:none}
.listbox ul{margin:0 0 0 20px}
.listbox li{color:var(--muted);margin-bottom:7px}
.tbl{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:15px}
.tbl th,.tbl td{border:1px solid var(--line);padding:11px 13px;text-align:left}
.tbl th{background:var(--panel2);color:var(--gold)}
.tbl td{color:var(--muted)}
.tbl tr:hover td{background:var(--panel)}
.steps{counter-reset:s;display:grid;gap:14px;margin-bottom:18px}
.steps li{counter-increment:s;list-style:none;position:relative;padding-left:52px;color:var(--muted)}
.steps li:before{content:counter(s);position:absolute;left:0;top:0;width:36px;height:36px;background:linear-gradient(180deg,var(--gold),var(--gold-d));
  color:#241c0e;font-weight:700;display:flex;align-items:center;justify-content:center}
.steps li b{color:var(--text)}

/* ---------- CTA band ---------- */
.cta-band{background:
  linear-gradient(90deg,rgba(198,17,1,.18),transparent 45%),
  linear-gradient(275deg,rgba(255,187,90,.16),transparent 50%),var(--panel2);
  border-top:1px solid var(--gold-d);border-bottom:1px solid var(--gold-d);padding:26px 0}
.cta-band .wrap{display:flex;gap:18px;align-items:center;flex-wrap:wrap}
.cta-band h3{font-size:24px;color:var(--gold-h);margin-bottom:6px;letter-spacing:-.2px}
.cta-band p{color:#e7dfd2;margin:0;font-size:15px}
.cta-band .row{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}

/* ---------- faq ---------- */
.faq details{background:var(--panel);border:1px solid var(--line);margin-bottom:10px}
.faq summary{cursor:pointer;padding:15px 18px;font-weight:700;color:var(--gold);list-style:none;position:relative;padding-right:44px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:after{content:"+";position:absolute;right:16px;top:13px;color:var(--gold);font-size:22px;line-height:1}
.faq details[open] summary:after{content:"–"}
.faq details[open] summary{border-bottom:1px solid var(--line)}
.faq .a{padding:14px 18px;color:var(--muted)}

/* ---------- links grid ---------- */
.linkgrid{display:grid;gap:10px;grid-template-columns:repeat(4,1fr)}
.linkgrid a{background:var(--panel);border:1px solid var(--line);padding:13px 15px;color:var(--text);font-size:15px;display:flex;justify-content:space-between;align-items:center}
.linkgrid a:hover{border-color:var(--gold-d);color:var(--gold)}
.linkgrid a i{color:var(--gold-d);font-style:normal}

/* ---------- footer ---------- */
footer.site{background:#100e0b;border-top:1px solid var(--line);padding:40px 0 96px;color:var(--muted);font-size:14px}
footer.site .fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
footer.site h4{color:var(--gold);font-size:15px;margin-bottom:12px}
footer.site ul{list-style:none}
footer.site li{margin-bottom:8px}
footer.site a{color:var(--muted)}
footer.site a:hover{color:var(--gold)}
footer .logo-row{display:flex;align-items:center;gap:12px;margin-bottom:12px}
footer .logo-row img{height:38px;width:auto}
.legal{border-top:1px solid var(--line);margin-top:28px;padding-top:18px;font-size:13px;color:var(--dim);display:grid;gap:8px}
.age{display:inline-flex;width:34px;height:34px;border:1px solid var(--red);color:#ff8f80;align-items:center;justify-content:center;font-weight:700}

/* ---------- sticky mobile bar ---------- */
.stickybar{position:fixed;left:0;right:0;bottom:0;z-index:70;display:none;gap:1px;background:var(--line)}
.stickybar a{flex:1;padding:13px 6px;text-align:center;font-size:14px;font-weight:700;background:var(--panel2);color:var(--gold)}
.stickybar a.reg{background:linear-gradient(180deg,var(--gold),var(--gold-d));color:#241c0e}

@media (max-width:960px){
  .hero .wrap{grid-template-columns:1fr}
  .g4,.g3,.facts,.linkgrid{grid-template-columns:repeat(2,1fr)}
  footer.site .fgrid{grid-template-columns:repeat(2,1fr)}
  nav.main{order:3;flex-basis:100%;flex-wrap:nowrap;overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:6px}
  nav.main::-webkit-scrollbar{height:4px}
  header.site .btn{margin-left:auto}
}
@media (max-width:620px){
  .g2,.g3,.g4,.facts,.linkgrid,footer.site .fgrid{grid-template-columns:1fr}
  .facts{grid-template-columns:repeat(2,1fr)}
  .stickybar{display:flex}
  .hero{padding:28px 0}
  section.blk{padding:32px 0}
  .topbar span.hide-s{display:none}
  nav.main a.hide-s{display:none}
  .cta-band .row{margin-left:0;width:100%}
  .cta-band .row .btn{flex:1;text-align:center}
}