:root{
  --bg:#080705;
  --bg-2:#11100d;
  --panel:#15120c;
  --panel-2:#1c170d;
  --gold:#d6a83a;
  --gold-2:#f5d57a;
  --gold-3:#8c641c;
  --text:#fff7e6;
  --muted:#c9b993;
  --line:rgba(245,213,122,.18);
  --glass:rgba(22,18,10,.78);
  --shadow:0 24px 80px rgba(0,0,0,.45);
  --radius:24px;
  --radius-sm:16px;
  --container:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Inter","Noto Sans Thai",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:
    radial-gradient(circle at 20% 0%,rgba(214,168,58,.16),transparent 34%),
    radial-gradient(circle at 90% 10%,rgba(245,213,122,.10),transparent 30%),
    linear-gradient(180deg,#050403 0%,#0b0905 48%,#070604 100%);
  color:var(--text);
  line-height:1.75;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
button,input{font:inherit}
.container{width:min(var(--container),calc(100% - 32px));margin-inline:auto}
.section-space{padding:88px 0}
.section-tight{padding:34px 0}

.page-progress{
  position:fixed;top:0;left:0;height:3px;width:0;
  background:linear-gradient(90deg,var(--gold),var(--gold-2));
  z-index:9999;box-shadow:0 0 18px rgba(245,213,122,.75);
}
.background-orbs{position:fixed;inset:0;pointer-events:none;z-index:-1;overflow:hidden}
.orb{position:absolute;border-radius:999px;filter:blur(4px);opacity:.45;background:radial-gradient(circle,var(--gold-2),transparent 68%);animation:float 9s ease-in-out infinite}
.orb-one{width:160px;height:160px;left:-50px;top:160px}
.orb-two{width:220px;height:220px;right:-90px;top:420px;animation-delay:1.5s}
.orb-three{width:120px;height:120px;left:12%;bottom:100px;animation-delay:3s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-28px)}}

.site-header{position:sticky;top:0;z-index:100;background:rgba(8,7,5,.72);backdrop-filter:blur(18px);border-bottom:1px solid var(--line);transition:.25s ease}
.site-header.is-scrolled{box-shadow:0 18px 50px rgba(0,0,0,.42)}
.topbar{border-bottom:1px solid rgba(245,213,122,.10);font-size:13px;color:var(--muted)}
.topbar-inner{display:flex;justify-content:space-between;gap:16px;padding:8px 0}
.navbar{height:74px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:inline-flex;align-items:center;gap:10px;font-weight:800;letter-spacing:.02em}
.brand-mark{display:inline-flex;align-items:center;justify-content:center;min-width:58px;height:38px;border-radius:999px;background:linear-gradient(135deg,#2a210e,var(--gold),var(--gold-2));color:#120d04;box-shadow:0 0 32px rgba(214,168,58,.28)}
.brand-text{color:var(--gold-2);font-size:14px;text-transform:uppercase}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-menu a{padding:10px 14px;border-radius:999px;color:var(--muted);font-size:14px;transition:.22s ease}
.nav-menu a:hover,.nav-menu a.active{background:rgba(214,168,58,.12);color:var(--gold-2)}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:14px;background:rgba(245,213,122,.08);cursor:pointer;padding:10px}
.nav-toggle span{display:block;height:2px;background:var(--gold-2);margin:5px 0;border-radius:999px}

.hero-section{position:relative;overflow:hidden;padding-top:72px}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.04fr) minmax(330px,.74fr);gap:34px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:10px;color:var(--gold-2);font-weight:700;font-size:14px;background:rgba(214,168,58,.10);border:1px solid var(--line);padding:9px 13px;border-radius:999px}
.eyebrow span{width:9px;height:9px;border-radius:999px;background:var(--gold-2);box-shadow:0 0 16px var(--gold-2)}
h1{font-size:clamp(36px,5.2vw,70px);line-height:1.12;margin:22px 0 18px;letter-spacing:-.055em;max-width:900px}
.hero-lead{font-size:18px;color:var(--muted);max-width:760px;margin:0 0 28px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:24px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 20px;border-radius:999px;font-weight:800;transition:.22s ease;border:1px solid transparent}
.btn-primary{background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#120d04;box-shadow:0 16px 42px rgba(214,168,58,.24)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 54px rgba(214,168,58,.34)}
.btn-outline{border-color:var(--line);color:var(--gold-2);background:rgba(245,213,122,.06)}
.btn-outline:hover{background:rgba(245,213,122,.12)}
.trust-row{display:flex;gap:10px;flex-wrap:wrap}
.trust-row span{font-size:13px;color:var(--muted);padding:7px 10px;border:1px solid rgba(245,213,122,.14);border-radius:999px;background:rgba(0,0,0,.18)}
.hero-panel{border:1px solid var(--line);border-radius:32px;background:linear-gradient(180deg,rgba(31,25,13,.92),rgba(12,10,6,.92));box-shadow:var(--shadow);padding:18px;position:relative;overflow:hidden}
.hero-panel:before{content:"";position:absolute;inset:-80px -90px auto auto;width:260px;height:260px;border-radius:999px;background:rgba(245,213,122,.18);filter:blur(20px)}
.panel-top{display:flex;justify-content:space-between;gap:12px;align-items:center;margin-bottom:16px;position:relative;z-index:1}
.panel-top small{display:block;color:var(--muted);font-size:12px}
.panel-top strong{display:block;color:var(--gold-2);font-size:18px}
.status-dot{font-size:12px;color:#121006;background:linear-gradient(135deg,var(--gold),var(--gold-2));padding:7px 10px;border-radius:999px;font-weight:800}
.promo-card{border-radius:26px;border:1px solid rgba(245,213,122,.18);background:radial-gradient(circle at 20% 0%,rgba(245,213,122,.26),transparent 40%),linear-gradient(135deg,#211804,#0e0b07);padding:24px;position:relative;z-index:1;min-height:230px;display:flex;flex-direction:column;justify-content:end;overflow:hidden}
.promo-card:after{content:"";position:absolute;right:-30px;bottom:-35px;width:160px;height:160px;border-radius:50%;background:conic-gradient(from 90deg,var(--gold-2),var(--gold-3),#221805,var(--gold-2));opacity:.38}
.card-label{width:max-content;color:#1a1203;background:var(--gold-2);padding:5px 9px;border-radius:999px;font-size:12px;font-weight:900;text-transform:uppercase}
.promo-card h2{font-size:30px;line-height:1.14;margin:14px 0 8px;letter-spacing:-.04em}
.promo-card p{margin:0;color:var(--muted)}
.mini-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:12px;position:relative;z-index:1}
.mini-card{border:1px solid rgba(245,213,122,.15);border-radius:18px;background:rgba(255,255,255,.045);padding:14px;min-height:96px}
.mini-card strong{display:block;color:var(--gold-2);font-size:22px;line-height:1}
.mini-card span{display:block;color:var(--muted);font-size:13px;margin-top:9px;line-height:1.45}

.quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.quick-card{border:1px solid var(--line);background:linear-gradient(180deg,rgba(25,20,12,.82),rgba(13,11,7,.82));border-radius:var(--radius);padding:24px;box-shadow:0 18px 48px rgba(0,0,0,.24)}
.icon-circle{display:inline-flex;align-items:center;justify-content:center;width:46px;height:46px;border-radius:14px;background:rgba(214,168,58,.14);color:var(--gold-2);font-weight:900;border:1px solid var(--line)}
.quick-card h2{font-size:22px;margin:14px 0 8px}
.quick-card p{margin:0;color:var(--muted)}

.article-layout{display:grid;grid-template-columns:280px minmax(0,1fr);gap:28px;align-items:start}
.toc-card{position:sticky;top:112px;border:1px solid var(--line);background:rgba(14,12,8,.74);backdrop-filter:blur(16px);border-radius:var(--radius);padding:18px;box-shadow:0 18px 54px rgba(0,0,0,.26)}
.toc-card strong{display:block;color:var(--gold-2);margin-bottom:12px}
.toc-card a{display:block;padding:10px 12px;border-radius:12px;color:var(--muted);font-size:14px;transition:.18s ease}
.toc-card a:hover{background:rgba(245,213,122,.10);color:var(--gold-2)}
.article-body{display:grid;gap:20px}
.content-card{border:1px solid var(--line);background:linear-gradient(180deg,rgba(22,18,10,.82),rgba(9,8,5,.86));border-radius:28px;padding:32px;box-shadow:0 20px 58px rgba(0,0,0,.24);overflow:hidden;position:relative}
.content-card:before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,var(--gold-2),transparent);opacity:.55}
.section-kicker{display:inline-block;color:var(--gold-2);font-weight:900;font-size:13px;text-transform:uppercase;letter-spacing:.08em;margin-bottom:7px}
.content-card h2{font-size:clamp(26px,3vw,38px);line-height:1.24;margin:0 0 14px;letter-spacing:-.035em}
.content-card p{color:var(--muted);margin:0 0 14px}
.content-card p:last-child{margin-bottom:0}
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:20px}
.feature-box{border:1px solid rgba(245,213,122,.14);border-radius:20px;padding:20px;background:rgba(255,255,255,.04)}
.feature-box h3,.security-list h3{font-size:18px;color:var(--gold-2);margin:0 0 8px;line-height:1.35}
.feature-box p,.security-list p{font-size:15px;margin:0;color:var(--muted)}
.ux-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:22px 0}
.ux-strip div{border:1px solid rgba(245,213,122,.14);border-radius:18px;padding:16px;text-align:center;background:linear-gradient(180deg,rgba(214,168,58,.12),rgba(255,255,255,.03))}
.ux-strip strong{display:block;color:var(--gold-2);font-size:22px}
.ux-strip span{display:block;color:var(--muted);font-size:13px}
.security-list{display:grid;gap:14px;margin-top:20px}
.security-list>div{padding:18px;border-radius:20px;border:1px solid rgba(245,213,122,.14);background:rgba(0,0,0,.15)}
.audience-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:18px}
.audience-grid div{padding:16px 18px;border-radius:18px;border:1px solid rgba(245,213,122,.16);background:rgba(214,168,58,.08);color:var(--text);font-weight:700}
.policy-table-wrap{overflow-x:auto;margin-top:18px;border:1px solid rgba(245,213,122,.14);border-radius:20px}
.policy-table{width:100%;border-collapse:collapse;min-width:620px;background:rgba(0,0,0,.16)}
.policy-table th,.policy-table td{padding:16px 18px;text-align:left;border-bottom:1px solid rgba(245,213,122,.12);vertical-align:top}
.policy-table th{color:var(--gold-2);background:rgba(214,168,58,.08)}
.policy-table td{color:var(--muted)}
.policy-table tr:last-child td{border-bottom:0}
.brand-panel{background:radial-gradient(circle at right top,rgba(214,168,58,.16),transparent 38%),linear-gradient(180deg,rgba(22,18,10,.9),rgba(9,8,5,.88))}
.faq-section{display:grid;gap:12px}
.faq-item{border:1px solid rgba(245,213,122,.15);border-radius:18px;overflow:hidden;background:rgba(0,0,0,.15)}
.faq-question{width:100%;border:0;background:transparent;color:var(--text);display:flex;justify-content:space-between;align-items:center;text-align:left;font-weight:800;padding:18px 20px;cursor:pointer}
.faq-question:after{content:"+";color:var(--gold-2);font-size:24px;line-height:1}
.faq-item.active .faq-question:after{content:"−"}
.faq-answer{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-answer p{padding:0 20px 18px;margin:0;color:var(--muted)}
.summary-card{border-color:rgba(245,213,122,.34);background:linear-gradient(135deg,rgba(214,168,58,.16),rgba(15,12,7,.9))}

.site-footer{border-top:1px solid var(--line);background:#060503;padding:46px 0 22px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.35fr .7fr .7fr 1fr;gap:28px;align-items:start}
.footer-brand p,.footer-note p{color:var(--muted);margin:14px 0 0;font-size:14px}
.footer-col strong{display:block;color:var(--gold-2);margin-bottom:12px}
.footer-col a{display:block;color:var(--muted);margin:8px 0;font-size:14px;transition:.18s ease}
.footer-col a:hover{color:var(--gold-2)}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;border-top:1px solid rgba(245,213,122,.12);margin-top:28px;padding-top:18px;color:var(--muted);font-size:13px}
.back-to-top{position:fixed;right:18px;bottom:18px;width:48px;height:48px;border-radius:16px;border:1px solid var(--line);background:linear-gradient(135deg,var(--gold),var(--gold-2));color:#120d04;font-weight:900;cursor:pointer;box-shadow:0 16px 40px rgba(0,0,0,.35);opacity:0;visibility:hidden;transform:translateY(8px);transition:.22s ease;z-index:80}
.back-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease}
.reveal.is-visible{opacity:1;transform:translateY(0)}

@media (max-width: 980px){
  .topbar-inner{flex-direction:column;gap:2px;text-align:center}
  .nav-toggle{display:block}
  .nav-menu{position:absolute;top:100%;left:16px;right:16px;display:grid;gap:4px;background:rgba(10,8,5,.96);border:1px solid var(--line);border-radius:20px;padding:10px;box-shadow:var(--shadow);opacity:0;visibility:hidden;transform:translateY(-8px);transition:.22s ease}
  .nav-menu.open{opacity:1;visibility:visible;transform:translateY(0)}
  .nav-menu a{padding:13px 14px}
  .hero-grid,.article-layout{grid-template-columns:1fr}
  .toc-card{position:relative;top:auto;display:grid;grid-template-columns:repeat(2,1fr);gap:4px}
  .toc-card strong{grid-column:1/-1}
  .quick-grid,.footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width: 720px){
  .section-space{padding:58px 0}
  .navbar{height:66px}
  .brand-text{display:none}
  h1{font-size:38px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .quick-grid,.feature-grid,.ux-strip,.audience-grid,.footer-grid,.mini-grid{grid-template-columns:1fr}
  .content-card{padding:24px 18px;border-radius:22px}
  .toc-card{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column}
}
@media (prefers-reduced-motion: reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}
/* ==============================
   U31 Showcase Section
============================== */

.u31-showcase {
  position: relative;
  padding: 84px 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(214, 170, 78, 0.16), transparent 32%),
    radial-gradient(circle at 85% 10%, rgba(255, 213, 113, 0.11), transparent 28%),
    linear-gradient(180deg, #080808 0%, #11100c 100%);
  overflow: hidden;
}

.u31-showcase::before {
  content: "";
  position: absolute;
  inset: 24px;
  border: 1px solid rgba(214, 170, 78, 0.16);
  border-radius: 28px;
  pointer-events: none;
}

.section-heading {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin-bottom: 28px;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
  padding: 7px 14px;
  border: 1px solid rgba(214, 170, 78, 0.35);
  border-radius: 999px;
  color: #f4ce7a;
  background: rgba(214, 170, 78, 0.08);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.section-heading h2 {
  margin: 0 0 12px;
  color: #fff7dc;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.18;
}

.section-heading p {
  margin: 0;
  color: rgba(255, 255, 255, 0.72);
  line-height: 1.8;
}

.showcase-category {
  position: relative;
  z-index: 2;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 0 18px;
  scrollbar-width: none;
}

.showcase-category::-webkit-scrollbar {
  display: none;
}

.category-pill {
  flex: 0 0 auto;
  border: 1px solid rgba(214, 170, 78, 0.28);
  background: rgba(255, 255, 255, 0.045);
  color: rgba(255, 255, 255, 0.76);
  border-radius: 999px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: 0.25s ease;
}

.category-pill:hover,
.category-pill.active {
  color: #13100a;
  background: linear-gradient(135deg, #fff1b8 0%, #d6aa4e 48%, #9d7326 100%);
  border-color: rgba(255, 226, 140, 0.8);
  box-shadow: 0 10px 24px rgba(214, 170, 78, 0.22);
}

.showcase-wrap {
  position: relative;
  z-index: 2;
}

.showcase-track {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(210px, 240px);
  gap: 18px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  padding: 8px 4px 16px;
  scrollbar-width: none;
}

.showcase-track::-webkit-scrollbar {
  display: none;
}

.showcase-card {
  scroll-snap-align: start;
  overflow: hidden;
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.035)),
    #15130e;
  border: 1px solid rgba(214, 170, 78, 0.2);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
  transition: transform 0.28s ease, border-color 0.28s ease, box-shadow 0.28s ease;
}

.showcase-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 217, 130, 0.58);
  box-shadow: 0 24px 54px rgba(0, 0, 0, 0.48), 0 0 0 1px rgba(214, 170, 78, 0.18);
}

.card-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background:
    radial-gradient(circle at 30% 20%, rgba(255, 213, 113, 0.38), transparent 34%),
    linear-gradient(135deg, #2b2415, #0c0c0c);
}

.card-image img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  transition: transform 0.35s ease;
}

.showcase-card:hover .card-image img {
  transform: scale(1.06);
}

.card-image::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 45%, rgba(0, 0, 0, 0.62) 100%);
}

.card-badge {
  position: absolute;
  left: 12px;
  bottom: 12px;
  z-index: 2;
  padding: 6px 10px;
  border-radius: 999px;
  color: #191105;
  background: linear-gradient(135deg, #fff1b8, #d6aa4e);
  font-size: 12px;
  font-weight: 800;
}

.card-body {
  padding: 14px 14px 16px;
}

.card-body h3 {
  margin: 0 0 6px;
  color: #fff7dc;
  font-size: 17px;
  line-height: 1.35;
}

.card-body p {
  margin: 0;
  color: rgba(255, 255, 255, 0.64);
  font-size: 13px;
  line-height: 1.6;
}

.showcase-arrow {
  position: absolute;
  top: 42%;
  z-index: 3;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(214, 170, 78, 0.34);
  border-radius: 50%;
  background: rgba(9, 9, 9, 0.78);
  color: #f4ce7a;
  font-size: 32px;
  line-height: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  backdrop-filter: blur(10px);
  transition: 0.25s ease;
}

.showcase-arrow:hover {
  color: #14100a;
  background: linear-gradient(135deg, #fff1b8, #d6aa4e);
}

.showcase-prev {
  left: -18px;
}

.showcase-next {
  right: -18px;
}

.showcase-card.is-hidden {
  display: none;
}
@media (max-width: 768px) {
  .u31-showcase {
    padding: 56px 0;
  }

  .u31-showcase::before {
    inset: 12px;
    border-radius: 22px;
  }

  .showcase-track {
    grid-auto-columns: minmax(168px, 78vw);
    gap: 14px;
  }

  .showcase-arrow {
    display: none;
  }

  .card-body h3 {
    font-size: 16px;
  }
}