:root {
  --bg: #0b1024;
  --bg2: #111836;
  --card: #151d40;
  --line: #26305c;
  --text: #eef0fa;
  --muted: #a7aecb;
  --gold: #f5c451;
  --gold2: #d99a1f;
  --red: #e0533a;
  --radius: 16px;
  --max: 1160px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: radial-gradient(1200px 600px at 50% -200px, #1d2a66 0%, transparent 70%), var(--bg);
  color: var(--text);
  font-family: "Prompt", "Noto Sans Thai", system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }

/* ---------- header ---------- */
.top {
  position: sticky; top: 0; z-index: 20;
  background: rgba(11, 16, 36, .88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.top .wrap { display: flex; align-items: center; gap: 16px; height: 64px; }
.logo { font-weight: 700; font-size: 20px; letter-spacing: .3px; white-space: nowrap; }
.logo b { color: var(--gold); }
.logo small { color: var(--muted); font-weight: 400; font-size: 12px; margin-left: 6px; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { padding: 8px 12px; border-radius: 10px; color: var(--muted); font-size: 15px; }
.nav a:hover, .nav a.on { color: var(--text); background: var(--bg2); }
.menu-btn { display: none; margin-left: auto; background: none; border: 1px solid var(--line); color: var(--text); border-radius: 10px; padding: 6px 12px; font: inherit; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 11px 20px; border-radius: 999px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; cursor: pointer; font-family: inherit;
}
.btn-gold { background: linear-gradient(180deg, var(--gold), var(--gold2)); color: #1a1205; }
.btn-gold:hover { filter: brightness(1.08); }
.btn-ghost { border-color: var(--line); color: var(--text); background: var(--bg2); }
.btn-ghost:hover { border-color: var(--gold2); }
.btn-line { background: #06c755; color: #fff; }
.btn-block { width: 100%; }

/* ---------- hero ---------- */
.hero { padding: 24px 0 8px; }
.hero-img {
  border-radius: var(--radius); overflow: hidden; border: 1px solid var(--line);
  box-shadow: 0 20px 60px rgba(0, 0, 0, .45);
  aspect-ratio: 1672 / 941; background: var(--bg2);
}
.hero-img img { width: 100%; height: 100%; object-fit: cover; }
.hero-text { text-align: center; padding: 28px 0 8px; }
.hero-text h1 { font-size: clamp(26px, 4.4vw, 44px); line-height: 1.25; margin: 0 0 10px; }
.hero-text h1 span { color: var(--gold); }
.hero-text p { color: var(--muted); margin: 0 auto 20px; max-width: 640px; }
.hero-cta { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ---------- promo ---------- */
.promo {
  margin: 32px 0 8px; padding: 20px 24px; border-radius: var(--radius);
  background: linear-gradient(110deg, #3a1410, #5b2112 45%, #2a1a4a);
  border: 1px solid #7a3a22;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
}
.promo .tag { background: var(--red); color: #fff; font-size: 13px; padding: 3px 10px; border-radius: 999px; font-weight: 600; }
.promo h3 { margin: 6px 0 2px; font-size: 20px; }
.promo p { margin: 0; color: #f0d8cc; font-size: 14px; }
.promo .price-box { margin-left: auto; text-align: right; }

/* ---------- sections ---------- */
section { padding: 36px 0 8px; }
.sec-head { display: flex; align-items: end; justify-content: space-between; gap: 12px; margin-bottom: 18px; }
.sec-head h2 { margin: 0; font-size: 24px; }
.sec-head h2::before { content: ""; display: inline-block; width: 6px; height: 22px; background: var(--gold); border-radius: 3px; margin-right: 10px; vertical-align: -3px; }
.sec-head a { color: var(--gold); font-size: 15px; white-space: nowrap; }

.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  overflow: hidden; display: flex; flex-direction: column;
  transition: transform .15s, border-color .15s;
}
.card:hover { transform: translateY(-3px); border-color: var(--gold2); }
.cover {
  aspect-ratio: 16 / 9; position: relative; display: flex; align-items: center; justify-content: center;
  padding: 16px; text-align: center; overflow: hidden;
}
.cover img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.cover .cover-title { position: relative; font-size: 22px; font-weight: 700; text-shadow: 0 2px 12px rgba(0, 0, 0, .5); line-height: 1.3; }
.cover .badge { position: absolute; top: 10px; left: 10px; background: rgba(0, 0, 0, .55); font-size: 12px; padding: 2px 10px; border-radius: 999px; }
.cover .off { position: absolute; top: 10px; right: 10px; background: var(--red); font-size: 12px; font-weight: 700; padding: 2px 10px; border-radius: 999px; }
.card-body { padding: 16px; display: flex; flex-direction: column; gap: 8px; flex: 1; }
.card-body h3 { margin: 0; font-size: 18px; line-height: 1.35; }
.card-body h3 small { color: var(--muted); font-weight: 400; font-size: 13px; }
.card-body p { margin: 0; color: var(--muted); font-size: 14px; flex: 1; }
.price { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.price .now { color: var(--gold); font-size: 22px; font-weight: 700; }
.price .was { color: var(--muted); text-decoration: line-through; font-size: 14px; }
.price .note { color: var(--muted); font-size: 12px; width: 100%; margin-top: -4px; }
.card-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin-top: 6px; }
.card-actions .btn { padding: 9px 10px; font-size: 14px; }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; counter-reset: s; }
.step { background: var(--bg2); border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; }
.step::before { counter-increment: s; content: counter(s); display: inline-flex; width: 30px; height: 30px; align-items: center; justify-content: center; border-radius: 50%; background: var(--gold); color: #1a1205; font-weight: 700; margin-bottom: 8px; }
.step h4 { margin: 0 0 4px; }
.step p { margin: 0; color: var(--muted); font-size: 14px; }

/* ---------- filters ---------- */
.filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 18px; }
.chip { padding: 7px 16px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg2); color: var(--muted); cursor: pointer; font: inherit; font-size: 14px; }
.chip.on { background: var(--gold); color: #1a1205; border-color: var(--gold); font-weight: 600; }

/* ---------- detail ---------- */
.detail { display: grid; grid-template-columns: 1.2fr 1fr; gap: 28px; padding: 28px 0; align-items: start; }
.detail .cover { border-radius: var(--radius); border: 1px solid var(--line); }
.detail .cover .cover-title { font-size: 32px; }
.buy-box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; position: sticky; top: 84px; }
.buy-box h1 { margin: 0 0 6px; font-size: 26px; line-height: 1.3; }
.buy-box .lead { color: var(--muted); margin: 0 0 14px; }
.buy-box .price .now { font-size: 30px; }
.buy-box ul { padding-left: 20px; margin: 14px 0; }
.buy-box li { margin: 4px 0; }
.buy-box .actions { display: grid; gap: 10px; margin-top: 16px; }
.crumb { color: var(--muted); font-size: 14px; padding-top: 20px; }
.crumb a { color: var(--gold); }
.empty { color: var(--muted); padding: 40px 0; text-align: center; }

/* ---------- footer ---------- */
footer { margin-top: 56px; border-top: 1px solid var(--line); background: #080c1c; padding: 32px 0 96px; color: var(--muted); font-size: 14px; }
footer .cols { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 24px; }
footer h4 { color: var(--text); margin: 0 0 8px; }
footer a { display: block; padding: 2px 0; }
footer a:hover { color: var(--gold); }
footer .copy { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); font-size: 13px; }

/* ---------- mobile order bar ---------- */
.order-bar { display: none; }

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .detail { grid-template-columns: 1fr; }
  .buy-box { position: static; }
}
@media (max-width: 640px) {
  .menu-btn { display: block; }
  .nav { display: none; position: absolute; top: 64px; left: 0; right: 0; flex-direction: column; background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 14px; }
  .nav.open { display: flex; }
  .nav a { padding: 12px; }
  .grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  footer .cols { grid-template-columns: 1fr; }
  .promo .price-box { margin-left: 0; text-align: left; }
  .hero { padding-top: 12px; }
  .order-bar {
    display: grid; grid-template-columns: 1fr 1fr; gap: 8px;
    position: fixed; left: 0; right: 0; bottom: 0; z-index: 30;
    padding: 10px 16px calc(10px + env(safe-area-inset-bottom));
    background: rgba(8, 12, 28, .95); border-top: 1px solid var(--line);
  }
  .order-bar .btn { padding: 10px; }
}

/* ---------- pay ---------- */
.pay { max-width: 520px; margin: 28px auto 0; }
.pay-card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 22px; text-align: center; }
.pay-card h1 { font-size: 22px; margin: 0 0 4px; }
.pay-card .muted { color: var(--muted); font-size: 14px; margin: 0; }
.qr { background: #fff; border-radius: 12px; padding: 12px; width: min(280px, 100%); margin: 16px auto; }
.qr svg { width: 100%; height: auto; display: block; }
.amount { font-size: 40px; font-weight: 700; color: var(--gold); line-height: 1.2; margin: 6px 0 2px; letter-spacing: .5px; }
.amount small { font-size: 18px; color: var(--text); font-weight: 400; }
.warn { background: #3a2a10; border: 1px solid #7a5a17; color: #ffe2a3; border-radius: 12px; padding: 10px 14px; font-size: 14px; margin: 12px 0; text-align: left; }
.timer { color: var(--muted); font-size: 14px; }
.upload { margin-top: 18px; display: grid; gap: 10px; }
.upload input[type=file] { display: none; }
.result { margin-top: 14px; padding: 14px; border-radius: 12px; font-size: 15px; text-align: left; }
.result.ok { background: #10301f; border: 1px solid #2f7a4b; }
.result.err { background: #3a1410; border: 1px solid #7a3a22; }
.code-box { font-size: 28px; font-weight: 700; letter-spacing: 3px; color: var(--gold); text-align: center; margin: 8px 0; user-select: all; }