:root {
  --sky: #071018;
  --sky-2: #0d1a28;
  --quartz: rgba(244, 247, 251, 0.08);
  --quartz-strong: rgba(248, 251, 255, 0.16);
  --silver: #e8eef6;
  --muted: #a9b8c9;
  --emerald: #1ec98a;
  --violet: #8b6cff;
  --cyan: #3ee0e8;
  --text: #f4f7fb;
  --ink: #071018;
  --radius: 1.25rem;
  --shadow: 0 24px 60px rgba(3, 8, 16, 0.45);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "IBM Plex Sans Thai", "Outfit", sans-serif;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(62, 224, 232, 0.18), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(139, 108, 255, 0.22), transparent 50%),
    radial-gradient(800px 500px at 70% 100%, rgba(30, 201, 138, 0.12), transparent 45%),
    linear-gradient(180deg, var(--sky) 0%, var(--sky-2) 100%);
  min-height: 100vh;
  line-height: 1.7;
}
img { max-width: 100%; display: block; height: auto; }
a { color: var(--cyan); text-underline-offset: 0.18em; }
a:hover { color: var(--emerald); }
.shell {
  width: min(1120px, calc(100% - 2rem));
  margin-inline: auto;
}
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  isolation: isolate;
  backdrop-filter: blur(18px);
  background: rgba(7, 16, 24, 0.72);
  border-bottom: 1px solid var(--quartz-strong);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--silver);
  text-decoration: none;
  font-family: Outfit, sans-serif;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.brand-mark {
  width: 1.15rem;
  height: 1.15rem;
  background: linear-gradient(135deg, var(--cyan), var(--violet) 55%, var(--emerald));
  clip-path: polygon(50% 0%, 100% 38%, 82% 100%, 18% 100%, 0% 38%);
  box-shadow: 0 0 16px rgba(62, 224, 232, 0.55);
}
.nav-toggle {
  display: none;
  background: var(--quartz);
  color: var(--silver);
  border: 1px solid var(--quartz-strong);
  border-radius: 999px;
  padding: 0.4rem 0.9rem;
  font: inherit;
}
.site-nav ul {
  display: flex;
  gap: 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.site-nav a {
  color: var(--silver);
  text-decoration: none;
  font-size: 0.95rem;
}
.site-nav a[aria-current="page"] {
  color: var(--cyan);
}

.crystal {
  background: linear-gradient(160deg, rgba(255,255,255,0.12), rgba(255,255,255,0.03));
  border: 1px solid rgba(255,255,255,0.16);
  border-radius: var(--radius);
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,0.22);
  backdrop-filter: blur(16px);
}

.split-hero {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  min-height: 78vh;
  margin-bottom: 3rem;
}
.split-hero .hero-visual {
  position: relative;
  min-height: 420px;
}
.split-hero .hero-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}
.split-hero .caption-rail {
  position: absolute;
  left: 0;
  bottom: 0;
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  padding: 1.2rem 0.7rem;
  background: rgba(7, 16, 24, 0.7);
  letter-spacing: 0.18em;
  font-size: 0.78rem;
  color: var(--cyan);
}
.hero-copy {
  padding: 3.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
}
.kicker {
  margin: 0;
  color: var(--emerald);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-size: 0.78rem;
  font-family: Outfit, sans-serif;
}
h1, h2, h3 {
  font-family: Outfit, "IBM Plex Sans Thai", sans-serif;
  line-height: 1.25;
  font-weight: 600;
}
h1 { font-size: clamp(2rem, 4vw, 3.35rem); margin: 0; }
h2 { font-size: clamp(1.5rem, 3vw, 2.1rem); }
.lede { font-size: 1.08rem; color: var(--muted); margin: 0; }
.place-chip {
  align-self: flex-start;
  padding: 0.7rem 1rem;
  font-size: 0.92rem;
}
.inline-action {
  color: var(--silver);
  font-weight: 600;
}

.section { padding: 3rem 0; }
.section-head { max-width: 40rem; margin-bottom: 1.75rem; }
.offer-primary {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.5rem;
  align-items: center;
}
.offer-primary img {
  border-radius: var(--radius);
  height: 360px;
  width: 100%;
  object-fit: cover;
}
.related-offers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}
.card {
  padding: 1.2rem;
  height: 100%;
}
.card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 0.8rem;
  margin-bottom: 0.8rem;
}
.card h3 { margin: 0.2rem 0 0.5rem; font-size: 1.15rem; }
.card p { margin: 0; color: var(--muted); }

.quotes {
  display: grid;
  gap: 1rem;
}
.quote {
  padding: 1.25rem 1.4rem;
  border-left: 3px solid var(--violet);
}
.quote p { margin: 0 0 0.6rem; }
.quote cite { color: var(--muted); font-style: normal; font-size: 0.92rem; }

.btn {
  font: inherit;
  cursor: pointer;
  border-radius: 999px;
  padding: 0.55rem 1.15rem;
  border: 1px solid transparent;
}
.btn-pulse {
  position: relative;
  overflow: hidden;
  background: linear-gradient(90deg, var(--cyan), var(--violet) 55%, var(--emerald));
  color: var(--ink);
  font-weight: 600;
  isolation: isolate;
}
.btn-pulse::after {
  content: "";
  position: absolute;
  inset: -40%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.65), transparent);
  transform: translateX(-120%);
  animation: crystalPulse 2.4s ease-in-out infinite;
  pointer-events: none;
}
@keyframes crystalPulse {
  0%, 55% { transform: translateX(-120%); opacity: 0; }
  70% { opacity: 1; }
  100% { transform: translateX(120%); opacity: 0; }
}
.btn-ghost {
  background: transparent;
  color: var(--silver);
  border-color: var(--quartz-strong);
}

.prose { max-width: 42rem; }
.prose p { color: var(--silver); }
.page-hero {
  padding: 3.2rem 0 1rem;
}
.page-hero img {
  width: 100%;
  max-height: 380px;
  object-fit: cover;
  border-radius: var(--radius);
  margin-top: 1.2rem;
}
.meta { color: var(--muted); font-size: 0.92rem; }

.price-grid, .team-grid, .post-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(3, 1fr);
}
.price-card ul { padding-left: 1.1rem; color: var(--muted); }
.team-card img {
  width: 100%;
  height: 220px;
  object-fit: cover;
  border-radius: 0.9rem;
}

.steps {
  display: grid;
  gap: 1rem;
}
.step {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  padding: 1rem 1.2rem;
}
.step-num {
  font-family: Outfit, sans-serif;
  font-size: 1.6rem;
  color: var(--cyan);
}

form.stack {
  display: grid;
  gap: 0.85rem;
  max-width: 34rem;
}
label { display: grid; gap: 0.3rem; font-weight: 500; }
input, textarea, select {
  font: inherit;
  padding: 0.65rem 0.75rem;
  border-radius: 0.7rem;
  border: 1px solid var(--quartz-strong);
  background: rgba(255,255,255,0.06);
  color: var(--text);
}
.field-error, .form-error {
  color: #ffb4c4;
  margin: 0;
  font-size: 0.9rem;
}
.form-success {
  color: var(--emerald);
  padding: 1rem;
}

.cookie-banner {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  width: min(720px, calc(100% - 1.5rem));
  z-index: 40;
}
.cookie-inner {
  width: 100%;
  padding: 1rem 1.1rem;
  background: linear-gradient(160deg, rgba(13,26,40,0.94), rgba(7,16,24,0.94));
  border: 1px solid rgba(62, 224, 232, 0.28);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.cookie-actions { display: flex; gap: 0.6rem; margin-top: 0.6rem; }

.site-footer {
  margin-top: 4rem;
  padding: 2.5rem 0 2rem;
  border-top: 1px solid var(--quartz-strong);
  background: rgba(0,0,0,0.18);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 0.8fr;
  gap: 1.5rem;
}
.footer-brand { font-family: Outfit, sans-serif; font-size: 1.2rem; margin: 0 0 0.4rem; }
.footer-label { margin: 0 0 0.4rem; color: var(--emerald); letter-spacing: 0.08em; }
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.35rem; }
.footer-copy { color: var(--muted); margin-top: 1.5rem; }

.not-found {
  min-height: 60vh;
  display: grid;
  place-content: center;
  text-align: center;
  gap: 0.8rem;
  padding: 4rem 1rem;
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    z-index: 30;
    background: rgba(7, 16, 24, 0.96);
    padding: 1rem;
  }
  .site-nav.is-open { display: block; }
  .site-nav ul { flex-direction: column; }
  .split-hero, .offer-primary, .related-offers, .price-grid, .team-grid, .post-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-copy { padding: 2rem 0 2.5rem; }
  .split-hero .hero-visual { min-height: 280px; }
}