:root {
  --sapphire-deep: #061833;
  --sapphire-royal: #0a2f6b;
  --sapphire-mid: #1b4f9c;
  --cyan-glass: #5ec8d8;
  --cyan-soft: #7dd3e0;
  --cyan-mist: #a8e6f0;
  --frost-white: #f0f7ff;
  --pure-white: #ffffff;
  --indigo-shadow: #151b3d;
  --ink: #0d1b3a;
  --ink-soft: #3a4a6b;
  --glass: rgba(240, 247, 255, 0.12);
  --glass-strong: rgba(240, 247, 255, 0.22);
  --border-glass: rgba(168, 230, 240, 0.28);
  --font-display: "Bai Jamjuree", "Sarabun", sans-serif;
  --font-body: "Sarabun", "Bai Jamjuree", sans-serif;
  --radius: 2px;
  --space: clamp(1.25rem, 3vw, 2.5rem);
  --max: 1120px;
  --header-h: 4.25rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.7;
  color: var(--frost-white);
  background:
    radial-gradient(ellipse 90% 60% at 10% -10%, rgba(94, 200, 216, 0.18), transparent 50%),
    radial-gradient(ellipse 70% 50% at 100% 0%, rgba(27, 79, 156, 0.45), transparent 55%),
    radial-gradient(ellipse 80% 40% at 50% 100%, rgba(21, 27, 61, 0.9), transparent 60%),
    linear-gradient(165deg, var(--sapphire-deep) 0%, var(--indigo-shadow) 42%, var(--sapphire-royal) 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--cyan-soft);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--cyan-mist);
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  color: var(--pure-white);
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.15rem); }
h3 { font-size: clamp(1.15rem, 2.2vw, 1.4rem); }

p { margin: 0 0 1rem; color: rgba(240, 247, 255, 0.88); }

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  background: linear-gradient(180deg, rgba(6, 24, 51, 0.92), rgba(6, 24, 51, 0.72));
  border-bottom: 1px solid var(--border-glass);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--header-h);
  gap: 1rem;
}

.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--pure-white);
  text-decoration: none;
  letter-spacing: 0.02em;
}

.brand span {
  color: var(--cyan-glass);
}

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-glass);
  color: var(--frost-white);
  padding: 0.45rem 0.7rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  cursor: pointer;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.35rem;
}

.site-nav a {
  color: rgba(240, 247, 255, 0.86);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--cyan-mist);
}

@media (max-width: 860px) {
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    padding: 1rem 1.25rem 1.25rem;
    background: rgba(6, 24, 51, 0.97);
    border-bottom: 1px solid var(--border-glass);
    gap: 0.85rem;
  }
  .site-nav.is-open { display: flex; }
}

/* Buttons — crystalline waveform */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.8rem 1.45rem;
  font-family: var(--font-display);
  font-size: 0.98rem;
  font-weight: 600;
  color: var(--sapphire-deep);
  background: linear-gradient(135deg, var(--cyan-mist), var(--cyan-glass));
  border: none;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  isolation: isolate;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn::before,
.btn::after {
  content: "";
  position: absolute;
  inset: 50% auto auto 50%;
  width: 8px;
  height: 8px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  pointer-events: none;
  z-index: -1;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 0 1px rgba(168, 230, 240, 0.4), 0 12px 28px rgba(5, 20, 50, 0.35);
  color: var(--sapphire-deep);
}

.btn:hover::before {
  animation: wave-expand 1.4s ease-out infinite;
}

.btn:hover::after {
  animation: wave-expand 1.4s ease-out 0.35s infinite;
}

.btn-ghost {
  background: transparent;
  color: var(--frost-white);
  border: 1px solid var(--border-glass);
  box-shadow: inset 0 0 20px rgba(94, 200, 216, 0.08);
}

.btn-ghost:hover {
  color: var(--cyan-mist);
  background: var(--glass);
}

@keyframes wave-expand {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 0.7; }
  100% { transform: translate(-50%, -50%) scale(14); opacity: 0; }
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1.5rem;
}

/* Hero — full-bleed visual plane */
.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) brightness(0.55);
}

.hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(6, 24, 51, 0.35) 0%, rgba(6, 24, 51, 0.55) 40%, rgba(6, 24, 51, 0.92) 100%),
    radial-gradient(ellipse 60% 40% at 70% 30%, rgba(94, 200, 216, 0.2), transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  padding: clamp(3rem, 10vh, 6rem) 0 clamp(2.5rem, 6vh, 4rem);
  max-width: 36rem;
  animation: rise-in 0.9s ease-out both;
}

.hero-brand {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: var(--pure-white);
}

.hero-brand em {
  font-style: normal;
  color: var(--cyan-glass);
}

.hero h1 {
  font-size: clamp(1.25rem, 2.8vw, 1.65rem);
  font-weight: 500;
  color: var(--cyan-mist);
  margin: 0 0 0.85rem;
}

.hero .lede {
  margin: 0;
  font-size: 1.05rem;
  color: rgba(240, 247, 255, 0.9);
}

@keyframes rise-in {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Sections */
.section {
  padding: clamp(3rem, 8vw, 5.5rem) 0;
  position: relative;
}

.section-head {
  max-width: 38rem;
  margin-bottom: 2rem;
}

.section-head p {
  margin-bottom: 0;
}

.glass-panel {
  background: linear-gradient(145deg, var(--glass-strong), var(--glass));
  border: 1px solid var(--border-glass);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.12),
    0 20px 40px rgba(3, 12, 30, 0.25);
  backdrop-filter: blur(10px);
  padding: clamp(1.25rem, 3vw, 1.75rem);
}

/* Service previews — not cards by default; interaction via link */
.offer-list {
  display: grid;
  gap: 0;
}

.offer-item {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1.4fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
  padding: 1.75rem 0;
  border-top: 1px solid var(--border-glass);
  text-decoration: none;
  color: inherit;
  transition: background 0.25s ease;
}

.offer-item:last-child {
  border-bottom: 1px solid var(--border-glass);
}

.offer-item:hover {
  background: rgba(94, 200, 216, 0.06);
}

.offer-item img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  filter: saturate(0.9);
}

.offer-item h3 {
  margin: 0 0 0.5rem;
  color: var(--pure-white);
}

.offer-meta {
  font-size: 0.9rem;
  color: var(--cyan-soft);
  margin-top: 0.65rem;
}

@media (max-width: 700px) {
  .offer-item {
    grid-template-columns: 1fr;
  }
}

/* Evidence / quotes */
.quote-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

@media (max-width: 860px) {
  .quote-grid { grid-template-columns: 1fr; }
}

.quote-block {
  padding: 0;
  border: none;
  background: transparent;
}

.quote-block p {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--frost-white);
  margin-bottom: 1rem;
  position: relative;
  padding-left: 1rem;
  border-left: 2px solid var(--cyan-glass);
}

.quote-block cite {
  font-style: normal;
  font-size: 0.9rem;
  color: var(--cyan-soft);
}

/* Split feature */
.split {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.split img {
  width: 100%;
  aspect-ratio: 5 / 4;
  object-fit: cover;
  box-shadow: 0 24px 48px rgba(3, 10, 28, 0.4);
}

@media (max-width: 800px) {
  .split { grid-template-columns: 1fr; }
}

/* Process page steps */
.steps {
  counter-reset: step;
  display: grid;
  gap: 0;
}

.step {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--border-glass);
  animation: rise-in 0.7s ease-out both;
}

.step:nth-child(2) { animation-delay: 0.08s; }
.step:nth-child(3) { animation-delay: 0.16s; }
.step:nth-child(4) { animation-delay: 0.24s; }
.step:nth-child(5) { animation-delay: 0.32s; }

.step:last-child { border-bottom: 1px solid var(--border-glass); }

.step-num {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--cyan-glass);
  line-height: 1;
}

.step h3 { margin: 0 0 0.4rem; }

/* Blog */
.blog-list {
  display: grid;
  gap: 2rem;
}

.blog-row {
  display: grid;
  grid-template-columns: minmax(0, 280px) 1fr;
  gap: 1.5rem;
  text-decoration: none;
  color: inherit;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-glass);
}

.blog-row img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.blog-row h2 {
  margin: 0 0 0.5rem;
  font-size: 1.35rem;
}

.blog-meta {
  font-size: 0.88rem;
  color: var(--cyan-soft);
  margin-bottom: 0.5rem;
}

@media (max-width: 700px) {
  .blog-row { grid-template-columns: 1fr; }
}

.prose {
  max-width: 42rem;
}

.prose p {
  margin-bottom: 1.15rem;
}

.cover-image {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  margin: 1.5rem 0 2rem;
}

/* Forms */
.form {
  display: grid;
  gap: 1.1rem;
  max-width: 36rem;
}

.form-field label {
  display: block;
  font-family: var(--font-display);
  font-size: 0.92rem;
  margin-bottom: 0.35rem;
  color: var(--frost-white);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--pure-white);
  background: rgba(6, 24, 51, 0.55);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
}

.form-field textarea { min-height: 140px; resize: vertical; }

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid rgba(94, 200, 216, 0.45);
  outline-offset: 1px;
}

.field-error {
  display: none;
  color: #ffb4b4;
  font-size: 0.88rem;
  margin-top: 0.3rem;
}

.form-field.has-error .field-error { display: block; }
.form-field.has-error input,
.form-field.has-error select,
.form-field.has-error textarea {
  border-color: #ff8a8a;
}

.form-status {
  display: none;
  padding: 0.85rem 1rem;
  border: 1px solid var(--border-glass);
  background: var(--glass);
}

.form-status.is-visible { display: block; }
.form-status.is-success { border-color: var(--cyan-glass); color: var(--cyan-mist); }
.form-status.is-error { border-color: #ff8a8a; color: #ffb4b4; }

/* Page hero compact */
.page-hero {
  padding: clamp(2.5rem, 6vw, 4rem) 0 1.5rem;
}

.page-hero h1 { margin: 0 0 0.75rem; }

.page-hero .lede {
  max-width: 38rem;
  margin: 0;
}

/* Legal */
.legal-content {
  max-width: 44rem;
}

.legal-content h2 {
  margin-top: 2rem;
  font-size: 1.25rem;
}

/* Footer */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--border-glass);
  padding: 2.5rem 0 2rem;
  background: rgba(3, 12, 28, 0.45);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

.footer-grid h3 {
  font-size: 0.95rem;
  margin: 0 0 0.75rem;
  color: var(--cyan-mist);
}

.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-grid li { margin-bottom: 0.4rem; }

.footer-grid a {
  color: rgba(240, 247, 255, 0.8);
  text-decoration: none;
}

.footer-grid a:hover { color: var(--cyan-mist); }

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(168, 230, 240, 0.15);
  font-size: 0.88rem;
  color: rgba(240, 247, 255, 0.6);
}

@media (max-width: 760px) {
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 200;
  padding: 1rem;
  display: none;
}

.cookie-banner.is-visible { display: block; }

.cookie-inner {
  width: min(100%, 720px);
  margin: 0 auto;
  padding: 1.1rem 1.25rem;
  background: linear-gradient(145deg, rgba(10, 47, 107, 0.96), rgba(21, 27, 61, 0.96));
  border: 1px solid var(--border-glass);
  box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.35);
  display: grid;
  gap: 0.85rem;
}

.cookie-inner p {
  margin: 0;
  font-size: 0.92rem;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.cookie-actions .btn { padding: 0.55rem 1rem; font-size: 0.9rem; }

/* 404 */
.error-page {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 700;
  color: var(--cyan-glass);
  line-height: 1;
  margin-bottom: 0.5rem;
  text-shadow: 0 0 40px rgba(94, 200, 216, 0.35);
}

/* Wave divider decoration */
.wave-line {
  height: 1px;
  border: none;
  margin: 0;
  background: linear-gradient(90deg, transparent, var(--cyan-glass), transparent);
  opacity: 0.55;
}

/* Pricing note */
.price-note {
  font-size: 0.9rem;
  color: rgba(240, 247, 255, 0.65);
  margin-top: 0.5rem;
}

/* Contact details */
.contact-details {
  display: grid;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.contact-details dt {
  font-family: var(--font-display);
  font-size: 0.85rem;
  color: var(--cyan-soft);
}

.contact-details dd {
  margin: 0.15rem 0 0;
}

/* Team portraits on about */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

.team-grid figure { margin: 0; }

.team-grid img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  margin-bottom: 0.75rem;
  filter: saturate(0.85);
}

.team-grid figcaption strong {
  display: block;
  font-family: var(--font-display);
  color: var(--pure-white);
}

.team-grid figcaption span {
  font-size: 0.9rem;
  color: var(--cyan-soft);
}

@media (max-width: 760px) {
  .team-grid { grid-template-columns: 1fr; max-width: 320px; }
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}