:root {
  --bg: #f6f5f2;
  --bg-elevated: #ffffff;
  --ink: #1f2a28;
  --ink-soft: #5a6763;
  --line: #ddd9d1;
  --accent: #2a4a46;
  --accent-soft: #a8c5b8;
  --accent-warm: #c4a574;
  --focus: #3d6b63;
  --danger: #8f3d3d;
  --success: #2f6b4f;
  --shadow: 0 18px 40px rgba(31, 42, 40, 0.06);
  --radius: 14px;
  --font-display: "Prompt", sans-serif;
  --font-body: "Sarabun", 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: 1.0625rem;
  line-height: 1.7;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(168, 197, 184, 0.28), transparent 60%),
    radial-gradient(900px 420px at 100% 0%, rgba(196, 165, 116, 0.14), transparent 55%),
    var(--bg);
  min-height: 100vh;
}

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

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

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin: 0 0 0.75rem;
}

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

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

.inline-error {
  background: #f6e8e8;
  color: var(--danger);
  padding: 0.75rem 1rem;
  text-align: center;
  font-size: 0.95rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(246, 245, 242, 0.86);
  border-bottom: 1px solid rgba(221, 217, 209, 0.8);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.03em;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: center;
}

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

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

.nav-toggle {
  display: none;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg-elevated);
  padding: 0.55rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  height: 2px;
  margin: 4px 0;
  background: var(--ink);
  border-radius: 2px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  min-height: 2.85rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

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

.btn--primary {
  background: var(--accent);
  color: #f7faf8;
}

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

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

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

.hero {
  position: relative;
  min-height: min(88vh, 760px);
  display: grid;
  align-items: end;
  overflow: hidden;
  color: #f4f7f5;
}

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

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85) contrast(1.05);
}

.hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(20, 32, 30, 0.25) 0%, rgba(20, 32, 30, 0.72) 68%, rgba(20, 32, 30, 0.88) 100%);
}

.hero__content {
  position: relative;
  z-index: 1;
  padding: clamp(4rem, 10vw, 7rem) 0 clamp(2.5rem, 5vw, 4rem);
  max-width: 38rem;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.6rem, 7vw, 4.4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin: 0 0 1rem;
  color: #fff;
}

.hero__lead {
  color: rgba(244, 247, 245, 0.9);
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

.section {
  padding: clamp(3.5rem, 7vw, 5.5rem) 0;
}

.section--tight {
  padding: clamp(2rem, 4vw, 3rem) 0;
}

.section-kicker {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.7rem, 3.4vw, 2.35rem);
  max-width: 18ch;
}

.section-intro {
  max-width: 42rem;
  margin-bottom: 2rem;
}

.proof-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  border-block: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.55);
}

.proof-item {
  padding: 1.4rem 0.5rem;
  text-align: center;
}

.proof-item strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--ink);
}

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

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

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

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

.benefit-list {
  grid-template-columns: repeat(2, 1fr);
}

.media-tile {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.25s ease;
}

.media-tile:hover {
  transform: translateY(-4px);
}

.media-tile__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: 0.9rem;
  background: #d9d5cc;
}

.media-tile__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.media-tile:hover .media-tile__image img {
  transform: scale(1.04);
}

.media-tile h3 {
  color: var(--ink);
  font-size: 1.15rem;
}

.media-tile p {
  margin: 0;
  font-size: 0.98rem;
}

.benefit {
  padding: 1.4rem 0;
  border-top: 1px solid var(--line);
}

.benefit h3 {
  font-size: 1.15rem;
}

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

.split img {
  border-radius: var(--radius);
  width: 100%;
  box-shadow: var(--shadow);
}

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

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

.quote p {
  color: var(--ink);
  font-size: 1.08rem;
}

.quote footer {
  margin-top: 0.75rem;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.tier {
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: calc(var(--radius) + 2px);
  padding: 1.6rem;
  box-shadow: var(--shadow);
}

.tier--featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, #ffffff 0%, #eef4f1 100%);
}

.tier h3 {
  font-size: 1.3rem;
}

.tier .price {
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--ink);
  margin: 0.4rem 0 1rem;
}

.tier ul {
  margin: 0 0 1.25rem;
  padding-left: 1.1rem;
  color: var(--ink-soft);
}

.tier li + li {
  margin-top: 0.35rem;
}

.page-hero {
  padding: clamp(3rem, 7vw, 5rem) 0 1.5rem;
}

.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  max-width: 16ch;
}

.prose {
  max-width: 46rem;
}

.prose h2 {
  margin-top: 2rem;
  font-size: 1.4rem;
}

.prose ul,
.prose ol {
  color: var(--ink-soft);
  padding-left: 1.2rem;
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.25rem 0;
  font-size: 0.95rem;
}

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

.prose th {
  background: rgba(255, 255, 255, 0.7);
  color: var(--ink);
  font-family: var(--font-display);
  font-weight: 600;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

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

.field {
  margin-bottom: 1rem;
}

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

.field input,
.field textarea,
.field select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0.75rem 0.85rem;
  font: inherit;
  background: #fff;
  color: var(--ink);
}

.field input:focus,
.field textarea:focus,
.field select:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--focus);
}

.field-error {
  min-height: 1.2em;
  margin: 0.3rem 0 0;
  color: var(--danger);
  font-size: 0.88rem;
}

.form-status {
  margin-top: 0.75rem;
  font-size: 0.95rem;
}

.form-status.is-success {
  color: var(--success);
}

.form-status.is-error {
  color: var(--danger);
}

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

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

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

.modules {
  display: grid;
  gap: 0.85rem;
}

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

.module h3 {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.instructor {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 1.25rem;
  align-items: center;
  margin-top: 1.5rem;
}

.instructor img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 50%;
}

.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  background: #ebe8e1;
  padding: 3rem 0 1.5rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.3fr;
  gap: 1.5rem;
}

.footer-heading {
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

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

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

.footer-links li + li {
  margin-top: 0.4rem;
}

.footer-contact {
  font-size: 0.92rem;
  margin-bottom: 0.55rem;
}

.footer-bottom {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(31, 42, 40, 0.1);
  color: var(--ink-soft);
  font-size: 0.9rem;
}

.cookie-banner {
  position: fixed;
  inset: auto 1rem 1rem 1rem;
  z-index: 60;
}

.cookie-banner__inner {
  max-width: 920px;
  margin: 0 auto;
  background: var(--bg-elevated);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem 1.15rem;
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
}

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

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

[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.55s ease var(--reveal-delay, 0ms), transform 0.55s ease var(--reveal-delay, 0ms);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

.cta-band {
  background: var(--accent);
  color: #f4f7f5;
  border-radius: calc(var(--radius) + 4px);
  padding: clamp(1.8rem, 4vw, 2.6rem);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.cta-band h2 {
  color: #fff;
  margin: 0 0 0.35rem;
  max-width: 16ch;
}

.cta-band p {
  color: rgba(244, 247, 245, 0.85);
  margin: 0;
}

.cta-band .btn--primary {
  background: #f4f7f5;
  color: var(--accent);
}

.muted {
  color: var(--ink-soft);
}

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

.case-study h3 {
  font-size: 1.25rem;
}

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

.error-page {
  min-height: 70vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 3rem 1rem;
}

.error-page h1 {
  font-size: clamp(3rem, 10vw, 5rem);
  margin-bottom: 0.4rem;
}

@media (max-width: 900px) {
  .course-grid,
  .blog-grid,
  .tier-grid,
  .benefit-list,
  .split,
  .contact-layout,
  .footer-grid,
  .proof-strip {
    grid-template-columns: 1fr;
  }

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

  .site-nav {
    display: none;
    position: absolute;
    top: 4.25rem;
    left: 0;
    right: 0;
    background: rgba(246, 245, 242, 0.98);
    border-bottom: 1px solid var(--line);
    padding: 1rem;
    flex-direction: column;
    align-items: flex-start;
  }

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

  .instructor {
    grid-template-columns: 1fr;
  }
}

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

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}