:root {
  --ink: #0b1620;
  --navy: #102536;
  --navy-2: #17344a;
  --gold: #c9a227;
  --gold-2: #e8c75a;
  --cream: #f6f0e4;
  --paper: #fffdf8;
  --muted: #5c6b76;
  --line: rgba(201, 162, 39, 0.28);
  --shadow: 0 18px 50px rgba(11, 22, 32, 0.18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "IBM Plex Sans Thai", "Noto Sans Thai", sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
}

a { color: inherit; }
img { max-width: 100%; display: block; }

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 22, 32, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.topbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 72px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: #fff;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.brand-mark {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(145deg, var(--gold-2), var(--gold));
  color: var(--ink);
  display: grid;
  place-items: center;
  font-size: 13px;
  font-weight: 800;
}
nav {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}
nav a {
  text-decoration: none;
  color: #d9e2ea;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 15px;
}
nav a:hover,
nav a.is-on {
  color: var(--ink);
  background: var(--gold-2);
}
.tel-btn {
  text-decoration: none;
  background: var(--gold);
  color: var(--ink);
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 999px;
  white-space: nowrap;
}
.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  color: #fff;
  border-radius: 8px;
  padding: 8px 10px;
}

.hero {
  background:
    radial-gradient(circle at 80% 10%, rgba(201, 162, 39, 0.22), transparent 28%),
    linear-gradient(160deg, #0b1620 0%, #143047 55%, #0b1620 100%);
  color: #fff;
  padding: 72px 0 64px;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}
.kicker {
  color: var(--gold-2);
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 13px;
  margin: 0 0 12px;
}
h1, h2, h3 { line-height: 1.25; margin: 0 0 12px; }
h1 { font-size: clamp(32px, 5vw, 56px); font-weight: 800; }
.lead { font-size: 18px; color: #d7e0e8; max-width: 36em; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border-radius: 999px;
  padding: 12px 20px;
  font-weight: 700;
}
.btn-gold { background: var(--gold-2); color: var(--ink); }
.btn-ghost { border: 1px solid rgba(255,255,255,.35); color: #fff; }
.shot {
  border-radius: 18px;
  box-shadow: var(--shadow);
  border: 1px solid rgba(255,255,255,.12);
}

section { padding: 72px 0; }
.section-head { max-width: 40em; margin-bottom: 32px; }
.muted { color: var(--muted); }

.cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.card {
  background: var(--paper);
  border: 1px solid rgba(16, 37, 54, 0.08);
  border-radius: 18px;
  padding: 22px;
  box-shadow: 0 10px 24px rgba(11, 22, 32, 0.05);
}
.card h3 { font-size: 20px; }
.num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--navy);
  color: var(--gold-2);
  display: grid;
  place-items: center;
  font-weight: 800;
  margin-bottom: 12px;
}

.features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 18px;
}
.feat {
  background: var(--paper);
  border-radius: 14px;
  padding: 16px 18px;
  border-left: 4px solid var(--gold);
}

.gallery {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.gallery figure {
  margin: 0;
  background: var(--navy);
  border-radius: 18px;
  overflow: hidden;
}
.gallery figcaption {
  color: #efe7d2;
  padding: 12px 16px 16px;
  font-size: 14px;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--paper);
  border-radius: 16px;
  overflow: hidden;
}
th, td {
  text-align: left;
  padding: 12px 14px;
  border-bottom: 1px solid #eee3cc;
  vertical-align: top;
}
th { background: var(--navy); color: var(--gold-2); font-weight: 700; }
kbd {
  font-family: ui-monospace, Consolas, monospace;
  background: #efe6cf;
  border: 1px solid #d9c48a;
  border-radius: 6px;
  padding: 1px 7px;
  font-size: 13px;
}

.cta {
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: #fff;
}
.phone {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--gold-2);
  text-decoration: none;
}

footer {
  background: #081018;
  color: #b9c5ce;
  padding: 28px 0;
  font-size: 14px;
}
footer a { color: var(--gold-2); text-decoration: none; }

.page-hero {
  padding: 48px 0 12px;
}
.page-hero h1 { font-size: clamp(28px, 4vw, 42px); }

.zoom {
  cursor: zoom-in;
}
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 80;
  background: rgba(8, 16, 24, 0.88);
  align-items: center;
  justify-content: center;
  padding: 24px;
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox img {
  /* ทับ img { max-width:100% } และขยายเกินขนาดไฟล์ต้นทางให้เต็มจอ */
  max-width: none;
  width: min(94vw, 1680px);
  height: min(90vh, 980px);
  object-fit: contain;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  cursor: default;
}
.lightbox-hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  color: #efe7d2;
  font-size: 14px;
}

@media (max-width: 900px) {
  .hero-grid, .cards, .gallery, .features { grid-template-columns: 1fr; }
  .menu-toggle { display: block; }
  nav {
    display: none;
    width: 100%;
    padding-bottom: 12px;
  }
  nav.open { display: flex; }
  .topbar-inner { flex-wrap: wrap; }
  .tel-btn { display: none; }
}