:root {
  --bg: #f7f6f3;
  --bg-elevated: #ffffff;
  --ink: #1e2420;
  --ink-soft: #5a635c;
  --line: #e2e0da;
  --accent: #3d5347;
  --accent-hover: #2f4037;
  --accent-soft: #e8eee9;
  --warm: #c4b5a0;
  --focus: #2a6b52;
  --danger: #8b3a3a;
  --success: #2f5d45;
  --radius: 4px;
  --shadow: 0 12px 40px rgba(30, 36, 32, 0.06);
  --font-sans: "Noto Sans Thai", sans-serif;
  --font-serif: "Noto Serif Thai", serif;
  --space: clamp(1rem, 2vw, 1.5rem);
  --shell: min(1120px, calc(100% - 2.5rem));
  --header-h: 4.25rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(61, 83, 71, 0.07), transparent 60%),
    radial-gradient(900px 400px at 100% 0%, rgba(196, 181, 160, 0.18), transparent 55%),
    var(--bg);
  min-height: 100vh;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-hover);
}

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

h1 { font-size: clamp(2rem, 4.2vw, 3.1rem); margin: 0 0 0.75rem; }
h2 { font-size: clamp(1.55rem, 2.8vw, 2.15rem); margin: 0 0 0.75rem; }
h3 { font-size: 1.25rem; margin: 0 0 0.5rem; }

p { margin: 0 0 1rem; color: var(--ink-soft); }

ul, ol { color: var(--ink-soft); }

.shell {
  width: var(--shell);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 1rem;
  z-index: 1000;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(247, 246, 243, 0.88);
  border-bottom: 1px solid var(--line);
}

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

.brand {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.brand:hover { color: var(--accent); }

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1.1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  color: var(--ink);
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius);
  font-family: inherit;
  cursor: pointer;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font-family: inherit;
  font-size: 0.98rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.btn:hover { transform: translateY(-1px); }

.btn-primary {
  background: var(--accent);
  color: #f8faf8;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--line);
  color: var(--ink);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

/* Sections */
.section {
  padding: clamp(3rem, 7vw, 5.5rem) 0;
}

.section-tight {
  padding: clamp(2rem, 5vw, 3.5rem) 0;
}

.eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.lede {
  font-size: 1.12rem;
  max-width: 42rem;
}

.page-hero {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 2rem;
  border-bottom: 1px solid var(--line);
}

.page-hero p {
  max-width: 40rem;
}

/* Home hero — full-bleed atmosphere */
.home-hero {
  position: relative;
  min-height: min(88vh, 720px);
  display: grid;
  align-items: end;
  color: #f4f2ee;
  overflow: hidden;
}

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

.home-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: slowZoom 18s ease-in-out infinite alternate;
}

.home-hero-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(20, 28, 24, 0.25) 0%, rgba(20, 28, 24, 0.72) 70%, rgba(20, 28, 24, 0.88) 100%);
}

.home-hero-content {
  position: relative;
  z-index: 1;
  padding: clamp(3rem, 8vw, 5rem) 0 clamp(3.5rem, 8vw, 5.5rem);
  animation: riseIn 0.9s ease both;
}

.home-hero h1 {
  color: #f7f6f3;
  max-width: 14ch;
}

.home-hero .lede {
  color: rgba(247, 246, 243, 0.88);
  max-width: 34rem;
}

.home-hero .brand-mark {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 1.85rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  color: #f7f6f3;
  letter-spacing: 0.02em;
}

/* Offer strip */
.offer-preview {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 800px) {
  .offer-preview {
    grid-template-columns: 1.2fr 1fr;
    align-items: center;
    gap: 3rem;
  }
}

.offer-preview img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: grid;
  gap: 0.85rem;
}

.feature-list li {
  padding-left: 1.1rem;
  border-left: 2px solid var(--accent);
  color: var(--ink-soft);
}

/* Service grid — interaction containers */
.service-grid {
  display: grid;
  gap: 1.25rem;
  margin-top: 2rem;
}

@media (min-width: 720px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.service-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.25s ease, border-color 0.25s ease;
  text-decoration: none;
  color: inherit;
  animation: riseIn 0.7s ease both;
}

.service-card:hover {
  box-shadow: var(--shadow);
  border-color: #c9d0cb;
}

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

.service-card-body {
  padding: 1.25rem 1.35rem 1.5rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.service-card h3 {
  color: var(--ink);
  text-decoration: none;
}

.service-card p {
  flex: 1;
  font-size: 0.98rem;
}

.service-meta {
  font-size: 0.9rem;
  color: var(--accent);
  font-weight: 600;
  margin-top: 0.75rem;
}

/* Evidence / quotes */
.quote-stack {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

@media (min-width: 800px) {
  .quote-stack {
    grid-template-columns: 1.4fr 1fr;
  }
}

.quote {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent);
  padding: 1.35rem 1.5rem;
}

.quote p {
  color: var(--ink);
  font-size: 1.05rem;
}

.quote footer {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: var(--ink-soft);
}

/* Detail layout */
.detail-layout {
  display: grid;
  gap: 2rem;
}

@media (min-width: 900px) {
  .detail-layout {
    grid-template-columns: 1.5fr 1fr;
    gap: 3rem;
  }
}

.detail-panel {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 1.5rem;
  border-radius: var(--radius);
}

.detail-panel dl {
  margin: 0;
}

.detail-panel dt {
  font-weight: 600;
  color: var(--ink);
  margin-top: 0.9rem;
}

.detail-panel dd {
  margin: 0.25rem 0 0;
  color: var(--ink-soft);
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin-top: 2rem;
}

.checklist {
  padding-left: 1.2rem;
}

.checklist li {
  margin-bottom: 0.45rem;
}

/* Pricing */
.rate-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--bg-elevated);
}

.rate-table th,
.rate-table td {
  text-align: left;
  padding: 1rem 1.1rem;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.rate-table th {
  font-family: var(--font-serif);
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--ink);
}

.note-box {
  background: var(--accent-soft);
  padding: 1.25rem 1.4rem;
  border-radius: var(--radius);
  margin-top: 1.5rem;
}

/* Blog */
.blog-list {
  display: grid;
  gap: 1.75rem;
}

.blog-item {
  display: grid;
  gap: 1rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s ease;
}

.blog-item:hover { opacity: 0.88; }

@media (min-width: 700px) {
  .blog-item {
    grid-template-columns: 220px 1fr;
    align-items: start;
  }
}

.blog-item img {
  width: 100%;
  aspect-ratio: 16/11;
  object-fit: cover;
  border-radius: var(--radius);
}

.blog-item h2 {
  font-size: 1.35rem;
  margin-bottom: 0.4rem;
  color: var(--ink);
}

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

.article-cover {
  width: 100%;
  max-height: 420px;
  object-fit: cover;
  border-radius: var(--radius);
  margin: 1.5rem 0 2rem;
}

/* Forms */
.contact-grid {
  display: grid;
  gap: 2.5rem;
}

@media (min-width: 860px) {
  .contact-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.form {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 1.5rem;
  border-radius: var(--radius);
}

.form-field {
  margin-bottom: 1.1rem;
}

.form-field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.35rem;
  color: var(--ink);
}

.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
  background: #fff;
  color: var(--ink);
}

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

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: 2px solid var(--focus);
  outline-offset: 1px;
}

.field-error {
  display: none;
  color: var(--danger);
  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: var(--danger);
}

.form-status {
  display: none;
  margin-top: 1rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius);
}

.form-status.is-success {
  display: block;
  background: #e7f2eb;
  color: var(--success);
}

.form-status.is-error {
  display: block;
  background: #f8eaea;
  color: var(--danger);
}

.address-block p {
  margin-bottom: 0.4rem;
}

/* Curriculum timeline */
.timeline {
  display: grid;
  gap: 0;
  margin-top: 2rem;
  border-left: 2px solid var(--line);
  padding-left: 1.5rem;
}

.timeline-item {
  position: relative;
  padding: 0 0 2rem;
  animation: riseIn 0.6s ease both;
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -1.85rem;
  top: 0.35rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--accent);
  border: 2px solid var(--bg);
}

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

.day-label {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.35rem;
}

/* Reviews stories */
.story-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

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

.story {
  padding: 1.5rem;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.story h3 {
  margin-bottom: 0.75rem;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 3rem 0 1.5rem;
  margin-top: 2rem;
  background: #f0efeb;
}

.footer-grid {
  display: grid;
  gap: 2rem;
}

@media (min-width: 800px) {
  .footer-grid {
    grid-template-columns: 1.4fr 1.2fr 1fr;
  }
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.footer-tag {
  max-width: 28rem;
}

.footer-label {
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

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

.footer-links li {
  margin-bottom: 0.35rem;
}

.footer-links a {
  text-decoration: none;
  color: var(--ink-soft);
}

.footer-links a:hover {
  color: var(--accent);
}

.footer-bottom {
  margin-top: 2.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.9rem;
}

/* Cookie banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 80;
  background: var(--bg-elevated);
  border-top: 1px solid var(--line);
  box-shadow: 0 -8px 30px rgba(30, 36, 32, 0.08);
  padding: 1rem 0;
  animation: slideUp 0.35s ease both;
}

.cookie-banner[hidden] {
  display: none !important;
}

.cookie-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.cookie-inner p {
  margin: 0;
  flex: 1 1 280px;
  font-size: 0.95rem;
}

.cookie-actions {
  display: flex;
  gap: 0.6rem;
  flex-shrink: 0;
}

/* 404 */
.error-page {
  text-align: center;
  padding: 6rem 0;
}

/* Legal */
.legal h2 {
  margin-top: 2rem;
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.95rem;
}

.legal th,
.legal td {
  border: 1px solid var(--line);
  padding: 0.7rem 0.8rem;
  text-align: left;
  vertical-align: top;
}

.legal th {
  background: var(--accent-soft);
}

.team-grid {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

@media (min-width: 700px) {
  .team-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.team-person img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  border-radius: var(--radius);
  margin-bottom: 0.85rem;
}

.muted {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

.split-cta {
  background: var(--accent);
  color: #f7f6f3;
  padding: clamp(2.5rem, 6vw, 3.5rem) 0;
  margin-top: 1rem;
}

.split-cta h2,
.split-cta p {
  color: #f7f6f3;
}

.split-cta .btn-primary {
  background: #f7f6f3;
  color: var(--accent);
}

.split-cta .btn-primary:hover {
  background: #fff;
}

.split-cta .btn-ghost {
  border-color: rgba(247, 246, 243, 0.45);
  color: #f7f6f3;
}

.split-cta .btn-ghost:hover {
  border-color: #fff;
  color: #fff;
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slowZoom {
  from { transform: scale(1); }
  to { transform: scale(1.06); }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 1rem 1.25rem 1.25rem;
  }

  .site-nav.is-open {
    display: block;
    animation: riseIn 0.25s ease both;
  }

  .site-nav ul {
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-header {
    position: sticky;
  }

  .header-inner {
    position: relative;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  html { scroll-behavior: auto; }
}