/* d55181.me — design system (self-contained, no CDN) */
*,*::before,*::after{box-sizing:border-box}
:root{
  --bg:#08090d; --bg-2:#0c0e14; --surface:#13161e; --surface-2:#1a1e28;
  --border:#262b38; --border-2:#333a4b;
  --text:#d9dce6; --muted:#98a0b3; --heading:#ffffff;
  --gold:#f0b23f; --gold-2:#ffd88a; --gold-deep:#b8801d;
  --red:#e04a3f; --green:#28c78b;
  --radius:16px; --radius-sm:10px;
  --shadow:0 18px 45px rgba(0,0,0,.45);
  --max:1180px;
  --font:'Sukhumvit Set','Noto Sans Thai','IBM Plex Sans Thai',-apple-system,BlinkMacSystemFont,'Segoe UI',Tahoma,sans-serif;
}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;height:auto;border-radius:var(--radius)}
a{color:var(--gold-2);text-decoration:none}
a:hover{color:var(--gold)}
h1,h2,h3,h4{color:var(--heading);line-height:1.4;margin:0 0 .6em}
h1{font-size:2.25rem;letter-spacing:-.2px}
h2{font-size:1.6rem}
h3{font-size:1.2rem}
p{margin:0 0 1.1em}
ul,ol{margin:0 0 1.2em;padding-left:1.3em}
li{margin-bottom:.45em}
strong{color:#fff}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 18px}
.section{padding:64px 0}
.section-alt{background:linear-gradient(180deg,var(--bg-2),var(--bg));border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:760px;margin:0 auto 34px;text-align:center}
.section-title{font-size:1.65rem;margin-bottom:.4em}
.section-title::after{content:"";display:block;width:64px;height:3px;margin:14px auto 0;border-radius:2px;background:linear-gradient(90deg,var(--gold-deep),var(--gold-2))}
.section-sub{color:var(--muted);margin:0}
.eyebrow{display:inline-block;font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold);border:1px solid var(--gold-deep);border-radius:999px;padding:6px 14px;margin-bottom:14px;background:rgba(240,178,63,.07)}

/* ---------- top bar / nav ---------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(8,9,13,.92);backdrop-filter:blur(10px);border-bottom:1px solid var(--border)}
.nav{display:flex;align-items:center;gap:18px;min-height:70px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.brand svg{display:block}
.nav-links{display:flex;flex-wrap:wrap;gap:4px;margin-left:auto;list-style:none;padding:0}
.nav-links a{display:block;padding:8px 11px;border-radius:8px;color:var(--muted);font-size:.95rem}
.nav-links a:hover,.nav-links a[aria-current="page"]{color:var(--gold-2);background:var(--surface)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;padding:11px 18px;border-radius:999px;font-weight:600;font-size:.95rem;color:#1a1205 !important;background:linear-gradient(135deg,var(--gold-2),var(--gold));box-shadow:0 8px 22px rgba(240,178,63,.28)}
.nav-cta:hover{filter:brightness(1.06)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:15px 26px;border-radius:999px;font-size:1rem;font-weight:700;border:1px solid transparent;transition:.18s;cursor:pointer}
.btn-primary{color:#1a1205;background:linear-gradient(135deg,var(--gold-2),var(--gold));box-shadow:0 12px 30px rgba(240,178,63,.3)}
.btn-primary:hover{transform:translateY(-1px);filter:brightness(1.06)}
.btn-ghost{color:var(--gold-2);border-color:var(--border-2);background:var(--surface)}
.btn-ghost:hover{border-color:var(--gold);color:var(--gold-2)}
.btn-block{width:100%}

/* ---------- hero ---------- */
.hero{padding:52px 0 44px;background:radial-gradient(1100px 420px at 12% -10%,rgba(240,178,63,.14),transparent 60%),radial-gradient(900px 400px at 92% 0%,rgba(224,74,63,.12),transparent 62%)}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}
.hero h1{font-size:2.5rem;margin-bottom:.35em}
.hero-lead{font-size:1.06rem;color:#c3c9d8;max-width:56ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:26px 0 18px}
.hero-fig{position:relative;margin:0}
.hero-fig img{border:1px solid var(--border);box-shadow:var(--shadow);width:100%;aspect-ratio:16/10;object-fit:cover}
.hero-fig figcaption{font-size:.82rem;color:var(--muted);margin-top:10px;text-align:center}
.hero-list{list-style:none;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:8px 18px;margin:20px 0 0}
.hero-list li{display:flex;gap:9px;align-items:flex-start;font-size:.95rem;color:#c3c9d8;margin:0}
.tick{flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:rgba(40,199,139,.15);display:inline-flex;align-items:center;justify-content:center;margin-top:3px}

/* ---------- countdown ---------- */
.cd-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.cd-title{font-size:.88rem;color:var(--muted);margin:0 0 12px;text-align:center;letter-spacing:.04em}
.cd-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-bottom:16px}
.cd-box{background:linear-gradient(180deg,var(--surface-2),#10131a);border:1px solid var(--border-2);border-radius:12px;padding:12px 6px;text-align:center}
.cd-num{display:block;font-size:1.6rem;font-weight:800;color:var(--gold-2);line-height:1.2;font-variant-numeric:tabular-nums}
.cd-lbl{display:block;font-size:.72rem;color:var(--muted);margin-top:2px}

/* ---------- trust strip ---------- */
.trust{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:34px}
.trust-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:16px;display:flex;gap:12px;align-items:center}
.trust-item b{display:block;color:#fff;font-size:.98rem;line-height:1.35}
.trust-item span{font-size:.8rem;color:var(--muted)}

/* ---------- cards ---------- */
.card-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:22px;transition:.18s}
.card:hover{border-color:var(--border-2);transform:translateY(-2px)}
.card-icon{width:44px;height:44px;border-radius:12px;background:rgba(240,178,63,.1);border:1px solid rgba(240,178,63,.28);display:flex;align-items:center;justify-content:center;margin-bottom:14px}
.card-title{font-weight:700;color:#fff;font-size:1.05rem;margin-bottom:8px}
.card-desc{font-size:.92rem;color:var(--muted);line-height:1.7;margin:0}

/* ---------- split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:34px;align-items:center}
.split-fig{margin:0}
.split-fig img{width:100%;aspect-ratio:16/10;object-fit:cover;border:1px solid var(--border)}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--surface)}
table{width:100%;border-collapse:collapse;font-size:.94rem;min-width:560px}
th,td{padding:13px 15px;text-align:center;border-bottom:1px solid var(--border)}
th{background:#181c25;color:#fff;font-weight:700;font-size:.9rem}
td:first-child,th:first-child{text-align:left;color:var(--text)}
tbody tr:last-child td{border-bottom:0}
tbody tr:hover{background:#171b24}
td.yes{color:var(--green);font-weight:600}
td.no{color:var(--red)}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;counter-reset:step}
.step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px 18px 18px}
.step-num{width:34px;height:34px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-weight:800;color:#1a1205;background:linear-gradient(135deg,var(--gold-2),var(--gold));margin-bottom:12px}
.step-title{font-weight:700;color:#fff;font-size:1rem;margin-bottom:6px}
.step-desc{font-size:.88rem;color:var(--muted);margin:0}

/* ---------- toc ---------- */
.toc-box{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--gold);border-radius:var(--radius-sm);padding:22px 24px;margin:30px 0 34px}
.toc-title{font-weight:700;color:var(--gold-2);margin-bottom:10px;font-size:1rem}
.toc-list{margin:0;padding-left:20px}
.toc-list li{margin-bottom:.35em;color:var(--muted)}
.toc-list a{color:var(--text);border-bottom:1px dotted var(--border-2)}
.toc-list a:hover{color:var(--gold-2)}

/* ---------- article body ---------- */
.article{max-width:none}
.article h2{margin-top:2em;padding-top:.2em}
.article h3{margin-top:1.5em;color:var(--gold-2)}
.article figure{margin:26px 0}
.article figure figcaption{font-size:.82rem;color:var(--muted);margin-top:9px}
.article blockquote{margin:22px 0;padding:6px 0 6px 18px;border-left:3px solid var(--gold);color:#c3c9d8}
.callout{background:var(--surface);border:1px solid var(--border);border-left:3px solid var(--green);border-radius:var(--radius-sm);padding:18px 20px;margin:24px 0}
.callout b{display:block;color:#fff;margin-bottom:6px}
.callout div{font-size:.94rem;color:var(--muted)}

/* ---------- faq ---------- */
.faq-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);margin-bottom:10px;overflow:hidden}
.faq-item summary{cursor:pointer;list-style:none;padding:16px 46px 16px 18px;font-weight:600;color:#fff;position:relative;font-size:1rem}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";position:absolute;right:18px;top:50%;transform:translateY(-50%);color:var(--gold);font-size:1.35rem;line-height:1}
.faq-item[open] summary::after{content:"–"}
.faq-item[open] summary{color:var(--gold-2)}
.faq-a{padding:0 18px 18px;color:var(--muted);font-size:.95rem}
.faq-a p{margin:0}
.faq-grid{max-width:860px;margin:0 auto}

/* ---------- promo / aside ---------- */
.promo-card{background:linear-gradient(150deg,rgba(240,178,63,.16),rgba(224,74,63,.12));border:1px solid var(--border-2);border-radius:var(--radius);padding:24px;text-align:center}
.promo-card .promo-head{font-weight:800;color:#fff;font-size:1.15rem;margin-bottom:8px}
.promo-card .promo-desc{font-size:.9rem;color:#c3c9d8;margin-bottom:16px}

/* ---------- cta band ---------- */
.cta-band{background:linear-gradient(135deg,#1b1508,#171a22 55%,#1d1010);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:58px 0;text-align:center}
.cta-band h2{font-size:1.8rem}
.cta-band p{color:var(--muted);max-width:640px;margin:0 auto 24px}
.cta-facts{display:flex;flex-wrap:wrap;gap:18px;justify-content:center;margin-top:22px;list-style:none;padding:0}
.cta-facts li{font-size:.88rem;color:var(--muted);display:flex;gap:7px;align-items:center;margin:0}

/* ---------- breadcrumb ---------- */
.crumb{font-size:.84rem;color:var(--muted);padding:18px 0 0}
.crumb a{color:var(--muted)}.crumb a:hover{color:var(--gold-2)}
.crumb span{margin:0 7px;color:var(--border-2)}

/* ---------- page header ---------- */
.page-head{padding:26px 0 6px}
.page-head h1{font-size:2.1rem;margin-bottom:.35em}
.page-head .lead{color:#c3c9d8;font-size:1.02rem;max-width:70ch}

/* ---------- footer ---------- */
.footer{background:#06070a;border-top:1px solid var(--border);padding:48px 0 26px;font-size:.92rem}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:28px}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px}
.footer-desc{color:var(--muted);font-size:.88rem;line-height:1.7}
.footer h5{color:#fff;font-size:.95rem;margin:0 0 12px}
.footer-links{list-style:none;padding:0;margin:0}
.footer-links li{margin-bottom:8px}
.footer-links a{color:var(--muted);font-size:.89rem}
.footer-links a:hover{color:var(--gold-2)}
.pay-badges{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px}
.pay-badge{font-size:.76rem;color:var(--muted);border:1px solid var(--border);border-radius:999px;padding:5px 11px;background:var(--surface)}
.footer-note{border-top:1px solid var(--border);margin-top:32px;padding-top:20px;color:#6f7789;font-size:.8rem;line-height:1.7}
.article-note{font-size:.82rem;color:#6f7789;border-top:1px solid var(--border);margin-top:34px;padding-top:16px}

@media (max-width:960px){
  .hero-grid,.split{grid-template-columns:1fr}
  .card-grid,.trust,.steps{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr}
  h1,.hero h1{font-size:1.85rem}
  .nav{gap:10px;padding:8px 0}
  .nav-links{margin-left:0;width:100%;order:3}
}
@media (max-width:600px){
  body{font-size:16px}
  .section{padding:44px 0}
  .card-grid,.trust,.steps,.hero-list{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .btn{width:100%}
  .hero-actions .btn{width:100%}
}