:root {
  --color-bg: #e6efe9;
  --color-bg-alt: #d7e5dc;
  --color-surface: #f5faf7;
  --color-ink: #14221e;
  --color-ink-soft: #3d534b;
  --color-primary: #1a4d45;
  --color-primary-deep: #0f342f;
  --color-accent: #b8973f;
  --color-accent-soft: #e8d7a4;
  --color-border: #b7c9bf;
  --color-error: #8f2d2d;
  --color-success: #1a4d45;
  --font-display: "Bai Jamjuree", sans-serif;
  --font-body: "Sarabun", sans-serif;
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2.5rem;
  --space-6: 4rem;
  --space-7: 6rem;
  --radius: 2px;
  --shadow: 0 18px 40px rgba(20, 34, 30, 0.08);
  --max: 72rem;
  --header-h: 4.25rem;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::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(--color-ink);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(184, 151, 63, 0.18), transparent 55%),
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(26, 77, 69, 0.12), transparent 50%),
    linear-gradient(180deg, var(--color-bg) 0%, #f0f5f2 40%, var(--color-bg-alt) 100%);
  min-height: 100vh;
}

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

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

a:hover {
  color: var(--color-primary-deep);
}

h1,
h2,
h3,
h4 {
  font-family: var(--font-display);
  line-height: 1.25;
  font-weight: 600;
  margin: 0 0 var(--space-3);
  color: var(--color-primary-deep);
}

h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.15rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  margin: 0 0 var(--space-3);
}

ul,
ol {
  margin: 0 0 var(--space-3);
  padding-left: 1.25rem;
}

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

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

.section {
  padding: var(--space-6) 0;
}

.section--tight {
  padding: var(--space-5) 0;
}

.section__eyebrow {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-2);
}

.section__lead {
  max-width: 40rem;
  color: var(--color-ink-soft);
  font-size: 1.125rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 2.75rem;
  padding: 0.65rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

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

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

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

.btn--ghost:hover {
  background: rgba(26, 77, 69, 0.08);
  color: var(--color-primary-deep);
}

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

.btn--accent:hover {
  background: #a68634;
  color: var(--color-primary-deep);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(245, 250, 247, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.site-header__brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary-deep);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.site-header__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
}

.site-header__toggle-bar {
  display: block;
  width: 1.15rem;
  height: 2px;
  margin-inline: auto;
  background: var(--color-primary);
}

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  gap: 0.35rem 1rem;
  flex-wrap: wrap;
}

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

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

.site-nav__cta {
  background: var(--color-primary);
  color: #f7faf8 !important;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius);
}

.site-nav__cta:hover {
  background: var(--color-primary-deep);
}

.site-footer {
  background: var(--color-primary-deep);
  color: #d7e5dc;
  margin-top: var(--space-7);
  padding: var(--space-6) 0 var(--space-4);
}

.site-footer a {
  color: #e8d7a4;
}

.site-footer__inner {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
  display: grid;
  gap: var(--space-5);
  grid-template-columns: 1.3fr 1fr 1fr;
}

.site-footer__name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: #f5faf7;
  margin-bottom: var(--space-2);
}

.site-footer__tagline {
  color: #b7c9bf;
  max-width: 22rem;
}

.site-footer__label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent-soft);
  margin: var(--space-3) 0 var(--space-1);
}

.site-footer__links ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.site-footer__links li {
  margin-bottom: 0.4rem;
}

.site-footer__bottom {
  width: min(100% - 2rem, var(--max));
  margin: var(--space-5) auto 0;
  padding-top: var(--space-3);
  border-top: 1px solid rgba(183, 201, 191, 0.25);
  font-size: 0.9rem;
  color: #9eb3a8;
}

.cookie-banner {
  position: fixed;
  inset-inline: 0;
  bottom: 0;
  z-index: 50;
  padding: var(--space-3);
}

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

.cookie-banner__inner {
  width: min(100%, 48rem);
  margin-inline: auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-3);
}

.cookie-banner__text {
  margin: 0;
  color: var(--color-ink-soft);
}

.cookie-banner__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: flex-end;
}

.hero {
  position: relative;
  min-height: calc(100vh - var(--header-h));
  display: grid;
  align-items: end;
  color: #f5faf7;
  overflow: hidden;
}

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

.hero__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  animation: hero-zoom 18s var(--ease) infinite alternate;
}

.hero__shade {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(15, 52, 47, 0.88) 0%, rgba(15, 52, 47, 0.55) 48%, rgba(15, 52, 47, 0.25) 100%),
    linear-gradient(0deg, rgba(15, 52, 47, 0.75) 0%, transparent 45%);
}

.hero__content {
  position: relative;
  z-index: 1;
  width: min(100% - 2rem, var(--max));
  margin: 0 auto;
  padding: var(--space-7) 0 var(--space-6);
  max-width: 40rem;
  animation: rise-in 0.9s var(--ease) both;
}

.hero__brand {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: var(--space-3);
  color: #f5faf7;
}

.hero__title {
  font-size: clamp(1.35rem, 2.8vw, 1.85rem);
  font-weight: 500;
  color: var(--color-accent-soft);
  margin-bottom: var(--space-3);
}

.hero__text {
  font-size: 1.125rem;
  color: #d7e5dc;
  max-width: 34rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.page-hero {
  padding: var(--space-6) 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
  background:
    linear-gradient(135deg, rgba(26, 77, 69, 0.08), transparent 55%),
    var(--color-surface);
  animation: rise-in 0.7s var(--ease) both;
}

.page-hero__title {
  max-width: 28rem;
}

.page-hero__text {
  max-width: 40rem;
  color: var(--color-ink-soft);
  font-size: 1.125rem;
}

.split {
  display: grid;
  gap: var(--space-5);
  align-items: center;
}

@media (min-width: 860px) {
  .split {
    grid-template-columns: 1.05fr 0.95fr;
  }

  .split--reverse {
    grid-template-columns: 0.95fr 1.05fr;
  }

  .split--reverse .split__media {
    order: -1;
  }
}

.split__media {
  overflow: hidden;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.split__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform 0.8s var(--ease);
}

.split:hover .split__media img {
  transform: scale(1.03);
}

.offer-list {
  display: grid;
  gap: var(--space-4);
}

.offer-item {
  display: grid;
  gap: var(--space-3);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  animation: rise-in 0.7s var(--ease) both;
}

@media (min-width: 720px) {
  .offer-item {
    grid-template-columns: 220px 1fr;
    align-items: start;
  }
}

.offer-item__image {
  overflow: hidden;
  border-radius: var(--radius);
}

.offer-item__image img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

.offer-item__meta {
  font-family: var(--font-display);
  font-size: 0.875rem;
  color: var(--color-accent);
  margin-bottom: var(--space-1);
}

.evidence {
  background: var(--color-primary);
  color: #e6efe9;
  padding: var(--space-6) 0;
}

.evidence h2,
.evidence h3 {
  color: #f5faf7;
}

.evidence__grid {
  display: grid;
  gap: var(--space-4);
}

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

.evidence__quote {
  margin: 0;
  padding: var(--space-4);
  border-left: 3px solid var(--color-accent);
  background: rgba(245, 250, 247, 0.06);
}

.evidence__quote p {
  font-size: 1.05rem;
  color: #d7e5dc;
}

.evidence__cite {
  font-style: normal;
  font-family: var(--font-display);
  color: var(--color-accent-soft);
}

.steps {
  counter-reset: step;
  list-style: none;
  padding: 0;
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 860px) {
  .steps {
    grid-template-columns: repeat(4, 1fr);
  }
}

.steps__item {
  position: relative;
  padding-top: var(--space-5);
  border-top: 2px solid var(--color-accent);
}

.steps__item::before {
  counter-increment: step;
  content: counter(step);
  position: absolute;
  top: 0.65rem;
  left: 0;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.price-block {
  display: grid;
  gap: var(--space-4);
}

.price-row {
  display: grid;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 4px solid var(--color-primary);
}

@media (min-width: 720px) {
  .price-row {
    grid-template-columns: 1.4fr 0.8fr;
    align-items: center;
  }
}

.price-row__amount {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
}

.factor-list {
  display: grid;
  gap: var(--space-3);
}

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

.factor {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border);
}

.media-card {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.35s var(--ease);
}

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

.media-card__image {
  overflow: hidden;
  border-radius: var(--radius);
  margin-bottom: var(--space-3);
}

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

.grid-3 {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 800px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.grid-2 {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 800px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.prose {
  max-width: 42rem;
}

.prose h2 {
  margin-top: var(--space-5);
}

.prose table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  margin: var(--space-4) 0;
}

.prose th,
.prose td {
  border: 1px solid var(--color-border);
  padding: 0.65rem 0.75rem;
  text-align: left;
  vertical-align: top;
}

.prose th {
  background: var(--color-bg-alt);
  font-family: var(--font-display);
}

.form {
  display: grid;
  gap: var(--space-3);
  max-width: 36rem;
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.form__field {
  display: grid;
  gap: 0.35rem;
}

.form label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
}

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

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

.form__error {
  color: var(--color-error);
  font-size: 0.9rem;
  min-height: 1.2em;
}

.form__status {
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
}

.form__status--success {
  border-color: var(--color-success);
  color: var(--color-success);
}

.form__status--error {
  border-color: var(--color-error);
  color: var(--color-error);
}

.contact-aside {
  padding: var(--space-4);
  background: var(--color-primary-deep);
  color: #d7e5dc;
}

.contact-aside h2 {
  color: #f5faf7;
}

.contact-aside a {
  color: var(--color-accent-soft);
}

.story {
  display: grid;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

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

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

.badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-accent-soft);
  padding: 0.2rem 0.55rem;
}

.cta-band {
  padding: var(--space-6) 0;
  background:
    linear-gradient(120deg, var(--color-primary-deep), var(--color-primary) 55%, #2a6359);
  color: #e6efe9;
  text-align: center;
}

.cta-band h2 {
  color: #f5faf7;
}

.cta-band p {
  max-width: 34rem;
  margin-inline: auto;
  color: #d7e5dc;
}

.detail-hero {
  display: grid;
  gap: var(--space-4);
}

@media (min-width: 900px) {
  .detail-hero {
    grid-template-columns: 1.1fr 0.9fr;
    align-items: stretch;
  }
}

.detail-hero__image img {
  width: 100%;
  height: 100%;
  min-height: 280px;
  object-fit: cover;
  border-radius: var(--radius);
}

.meta-list {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0 0;
  display: grid;
  gap: var(--space-2);
}

.meta-list li {
  display: grid;
  grid-template-columns: 8rem 1fr;
  gap: var(--space-2);
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--color-border);
}

.meta-list strong {
  font-family: var(--font-display);
  color: var(--color-primary);
}

.timeline {
  list-style: none;
  padding: 0;
  margin: 0;
  border-left: 2px solid var(--color-accent);
}

.timeline li {
  position: relative;
  padding: 0 0 var(--space-4) var(--space-4);
}

.timeline li::before {
  content: "";
  position: absolute;
  left: -0.4rem;
  top: 0.35rem;
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-accent-soft);
}

.error-page {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--space-6) var(--space-3);
}

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

@keyframes hero-zoom {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(1.06);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.7s var(--ease), transform 0.7s var(--ease);
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .site-header__toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-3);
    display: none;
  }

  .site-nav[data-open="true"] {
    display: block;
    animation: rise-in 0.35s var(--ease);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
  }

  .site-nav__cta {
    text-align: center;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
  }

  .meta-list li {
    grid-template-columns: 1fr;
  }
}