:root {
  --bg: #f7f6f2;
  --bg-elevated: #ffffff;
  --ink: #2a2d2a;
  --ink-soft: #5c625c;
  --line: #e2e0d8;
  --accent: #3d4a3f;
  --accent-soft: #a8b5a0;
  --accent-warm: #c4a484;
  --focus: #3d4a3f;
  --error: #9b3d3d;
  --success: #3d5c45;
  --radius: 4px;
  --shadow: 0 12px 40px rgba(42, 45, 42, 0.06);
  --font-display: "Noto Serif Thai", "Georgia", serif;
  --font-body: "IBM Plex Sans Thai", "Segoe UI", sans-serif;
  --space: clamp(1rem, 2vw, 1.5rem);
  --max: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(168, 181, 160, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(196, 164, 132, 0.12), transparent 50%),
    var(--bg);
  min-height: 100vh;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

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

h1 {
  font-size: clamp(2.1rem, 4.5vw, 3.4rem);
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.45rem);
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247, 246, 242, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--bg-elevated);
  color: var(--ink);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius);
  font-family: inherit;
  cursor: pointer;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

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

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

.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;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

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

.btn-primary {
  background: var(--accent);
  color: #f7f6f2;
}

.btn-primary:hover {
  background: #2f3931;
  color: #fff;
}

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

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

.site-footer {
  margin-top: 5rem;
  border-top: 1px solid var(--line);
  background: #efeee8;
  padding: 3rem 0 2rem;
}

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

.footer-grid h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
}

.footer-grid p,
.footer-grid a {
  color: var(--ink-soft);
  font-size: 0.95rem;
}

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

.footer-grid li {
  margin-bottom: 0.45rem;
}

.footer-grid a {
  text-decoration: none;
}

.footer-grid a:hover {
  text-decoration: underline;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.hero {
  padding: clamp(3rem, 8vw, 5.5rem) 0 clamp(2.5rem, 6vw, 4rem);
}

.hero-brand-mark {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.2rem);
  line-height: 1.05;
  margin: 0 0 1.25rem;
  color: var(--ink);
  max-width: 14ch;
}

.hero-lead {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  max-width: 36rem;
  margin-bottom: 1.75rem;
}

.hero-visual {
  margin-top: 2.5rem;
  width: 100%;
  min-height: clamp(220px, 38vw, 420px);
  object-fit: cover;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  animation: rise 0.9s ease both;
}

.section {
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
}

.section-label {
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-warm);
  margin-bottom: 0.5rem;
}

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

.section-head h2 {
  margin: 0 0 0.75rem;
}

.split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: center;
}

.quote-stack {
  display: grid;
  gap: 1.25rem;
}

.quote-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  padding: 1.4rem 1.5rem;
  border-radius: var(--radius);
  animation: fade-up 0.7s ease both;
}

.quote-card p {
  margin-bottom: 0.75rem;
  color: var(--ink);
}

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

.course-grid,
.blog-grid,
.tier-grid,
.benefit-grid {
  display: grid;
  gap: 1.5rem;
}

.course-grid,
.blog-grid {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.benefit-grid {
  grid-template-columns: repeat(3, 1fr);
}

.tier-grid {
  grid-template-columns: repeat(3, 1fr);
  align-items: stretch;
}

.media-card {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.media-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

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

.media-card .body {
  padding: 1.25rem 1.35rem 1.5rem;
}

.media-card h3 {
  margin: 0 0 0.5rem;
  font-size: 1.2rem;
}

.media-card h3 a {
  text-decoration: none;
  color: inherit;
}

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

.benefit-item {
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
}

.benefit-item h3 {
  margin: 0 0 0.5rem;
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 1.75rem 0;
  border-block: 1px solid var(--line);
}

.stat-row strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  color: var(--ink);
}

.stat-row span {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.tier {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}

.tier.featured {
  border-color: var(--accent);
  box-shadow: var(--shadow);
}

.tier .price {
  font-family: var(--font-display);
  font-size: 2rem;
  margin: 0.75rem 0;
  color: var(--ink);
}

.tier ul {
  margin: 0 0 1.5rem;
  padding-left: 1.1rem;
  color: var(--ink-soft);
  flex: 1;
}

.tier li {
  margin-bottom: 0.4rem;
}

.prose {
  max-width: 42rem;
}

.prose h2,
.prose h3 {
  margin-top: 2rem;
}

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

.page-hero {
  padding: 3rem 0 1.5rem;
}

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

.form {
  display: grid;
  gap: 1rem;
  max-width: 34rem;
}

.form label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.95rem;
  color: var(--ink);
}

.form input,
.form select,
.form textarea {
  font: inherit;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  color: var(--ink);
}

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

.form .error {
  color: var(--error);
  font-size: 0.88rem;
}

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

.form .form-status.show {
  display: block;
}

.form .form-status.success {
  background: rgba(61, 92, 69, 0.12);
  color: var(--success);
}

.form .form-status.fail {
  background: rgba(155, 61, 61, 0.1);
  color: var(--error);
}

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

.contact-aside dt {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent-warm);
  margin-top: 1rem;
}

.contact-aside dt:first-child {
  margin-top: 0;
}

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

.faq details {
  border-bottom: 1px solid var(--line);
  padding: 1rem 0;
}

.faq summary {
  cursor: pointer;
  font-weight: 500;
  color: var(--ink);
}

.faq details p {
  margin-top: 0.65rem;
}

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

.modules li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}

.modules .num {
  font-family: var(--font-display);
  color: var(--accent-soft);
  font-size: 1.2rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 1.5rem 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

th,
td {
  border: 1px solid var(--line);
  padding: 0.7rem 0.85rem;
  text-align: left;
  vertical-align: top;
}

th {
  background: #efeee8;
  color: var(--ink);
}

.cookie-banner {
  position: fixed;
  inset: auto 1rem 1rem 1rem;
  z-index: 60;
  max-width: 420px;
  margin-left: auto;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  padding: 1.25rem;
  border-radius: var(--radius);
  display: none;
}

.cookie-banner.show {
  display: block;
  animation: fade-up 0.35s ease both;
}

.cookie-banner p {
  font-size: 0.92rem;
  margin-bottom: 1rem;
}

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

.inline-error {
  background: rgba(155, 61, 61, 0.1);
  color: var(--error);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin: 1rem 0;
}

.case-study {
  background: var(--bg-elevated);
  border-left: 3px solid var(--accent-soft);
  padding: 1.5rem 1.75rem;
  margin: 1.5rem 0;
}

.rating {
  color: var(--accent-warm);
  letter-spacing: 0.08em;
}

.cta-band {
  background: var(--accent);
  color: #f4f2ed;
  padding: clamp(2.5rem, 5vw, 3.5rem);
  border-radius: var(--radius);
  text-align: center;
}

.cta-band h2 {
  color: #f4f2ed;
  margin: 0 0 0.75rem;
}

.cta-band p {
  color: rgba(244, 242, 237, 0.85);
  max-width: 34rem;
  margin: 0 auto 1.5rem;
}

.cta-band .btn-primary {
  background: #f4f2ed;
  color: var(--accent);
}

.cta-band .btn-ghost {
  border-color: rgba(244, 242, 237, 0.35);
  color: #f4f2ed;
}

.not-found {
  text-align: center;
  padding: 6rem 0;
}

.not-found .code {
  font-family: var(--font-display);
  font-size: clamp(4rem, 12vw, 7rem);
  line-height: 1;
  color: var(--accent-soft);
  margin: 0;
}

@keyframes fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: scale(1.02);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.reveal {
  animation: fade-up 0.8s ease both;
}

.reveal-delay {
  animation-delay: 0.15s;
}

@media (max-width: 900px) {
  .split,
  .benefit-grid,
  .tier-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    padding: 0.5rem 0 1rem;
  }

  .site-nav.open {
    display: flex;
  }

  .header-inner {
    flex-wrap: wrap;
  }
}