:root {
  --ink: #17231d;
  --muted: #5d6a63;
  --green-950: #102b20;
  --green-900: #173d2d;
  --green-700: #27704e;
  --green-100: #e4efe8;
  --yellow: #f3bd32;
  --blue: #2b78a6;
  --coral: #c65743;
  --paper: #f7f8f4;
  --white: #fff;
  --line: #dce2dd;
  --shadow: 0 12px 30px rgba(15, 44, 31, .12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: "Noto Sans Thai", system-ui, sans-serif;
  line-height: 1.6;
  letter-spacing: 0;
}
img { display: block; max-width: 100%; }
a { color: inherit; }
button, input, select { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; top: 8px; left: 8px; z-index: 100; padding: 8px 12px; background: var(--yellow); transform: translateY(-160%); }
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  color: var(--white);
  background: rgba(11, 37, 26, .9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,.14);
}
.nav-wrap { max-width: 1180px; height: 68px; margin: auto; padding: 0 24px; display: flex; align-items: center; justify-content: space-between; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; font-size: 1.1rem; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; color: var(--green-950); background: var(--yellow); border-radius: 6px; }
.brand-mark svg { width: 22px; }
.desktop-nav { display: flex; align-items: center; gap: 30px; }
.desktop-nav a, .mobile-nav a { text-decoration: none; font-weight: 600; color: rgba(255,255,255,.86); }
.desktop-nav a:hover, .desktop-nav a:focus-visible { color: var(--yellow); }
.icon-button { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid rgba(255,255,255,.2); background: transparent; color: var(--white); border-radius: 6px; cursor: pointer; }
.menu-button { display: none; }
.mobile-nav { padding: 10px 24px 18px; background: var(--green-950); }
.mobile-nav a { display: block; padding: 10px 0; }

.hero { position: relative; min-height: min(720px, 90vh); display: flex; align-items: center; color: var(--white); overflow: hidden; }
.hero-image, .hero-shade { position: absolute; inset: 0; width: 100%; height: 100%; }
.hero-image { object-fit: cover; object-position: center; }
.hero-shade { background: linear-gradient(90deg, rgba(8,25,17,.86) 0%, rgba(8,25,17,.58) 40%, rgba(8,25,17,.08) 74%); }
.hero-content { position: relative; z-index: 2; width: min(1180px, calc(100% - 48px)); margin: auto; padding-top: 78px; }
.hero-content > * { max-width: 660px; }
.eyebrow, .kicker { margin: 0 0 8px; color: var(--green-700); font-size: .82rem; font-weight: 800; text-transform: uppercase; }
.eyebrow { color: var(--yellow); }
.kicker.light { color: #9edbb9; }
.hero h1 { margin: 0; font-size: clamp(3.3rem, 8vw, 6.6rem); line-height: .98; font-weight: 800; }
.hero-copy { margin: 24px 0 30px; font-size: clamp(1.05rem, 2vw, 1.35rem); color: rgba(255,255,255,.9); }
.hero-actions { display: flex; align-items: center; gap: 24px; flex-wrap: wrap; }
.primary-button { min-height: 48px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; padding: 11px 18px; color: var(--white); background: var(--green-700); border: 0; border-radius: 6px; text-decoration: none; font-weight: 700; }
.primary-button:hover { background: #318a61; }
.primary-button.yellow { color: var(--green-950); background: var(--yellow); }
.text-button { display: inline-flex; align-items: center; gap: 8px; color: var(--white); font-weight: 700; text-decoration: none; }
.primary-button svg, .text-button svg, .source-link svg, .article-content a svg, .link-row a svg { width: 18px; }
.price-strip { position: absolute; z-index: 3; inset: auto 0 0; display: flex; justify-content: center; gap: 0; background: rgba(255,255,255,.95); color: var(--ink); border-top: 1px solid rgba(255,255,255,.4); }
.price-strip span { padding: 14px 28px; border-right: 1px solid var(--line); white-space: nowrap; }
.price-strip .updated { display: flex; align-items: center; gap: 8px; color: var(--muted); }
.price-strip svg { width: 17px; }

.section { max-width: 1180px; margin: auto; padding: 92px 24px; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 24px; margin-bottom: 28px; }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.2rem); line-height: 1.15; }
.source-link { display: inline-flex; align-items: center; gap: 7px; color: var(--green-700); font-weight: 700; text-decoration: none; }
.price-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.search-field { min-width: 280px; display: flex; align-items: center; gap: 10px; padding: 0 13px; background: var(--white); border: 1px solid var(--line); border-radius: 6px; }
.search-field svg { width: 19px; color: var(--muted); }
.search-field input { width: 100%; min-height: 44px; border: 0; outline: 0; background: transparent; }
.segmented { display: flex; padding: 3px; background: #e9ede9; border-radius: 6px; }
.segment { min-height: 38px; padding: 6px 14px; border: 0; background: transparent; color: var(--muted); cursor: pointer; border-radius: 4px; }
.segment.active { background: var(--white); color: var(--green-900); box-shadow: 0 1px 5px rgba(20,40,30,.1); font-weight: 700; }
.table-wrap { overflow-x: auto; background: var(--white); border: 1px solid var(--line); border-radius: 8px; }
table { width: 100%; border-collapse: collapse; min-width: 620px; }
th, td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--line); }
th { font-size: .82rem; color: var(--muted); background: #f0f4f0; }
td:nth-child(2) { font-weight: 800; color: var(--green-900); }
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover { background: #fbfcfa; }
.trend { display: inline-flex; align-items: center; gap: 6px; font-size: .88rem; font-weight: 700; }
.trend.up { color: var(--coral); }
.trend.down { color: var(--blue); }
.trend.stable { color: var(--muted); }
.trend svg { width: 16px; }
.data-note { margin: 12px 0 0; color: var(--muted); font-size: .85rem; }

.water-band { color: var(--white); background: var(--green-900); }
.water-layout { max-width: 1180px; margin: auto; padding: 82px 24px; display: grid; grid-template-columns: 1.1fr .9fr; gap: 64px; align-items: center; }
.water-copy > p:not(.kicker) { color: rgba(255,255,255,.78); font-size: 1.05rem; }
.check-list { list-style: none; margin: 28px 0; padding: 0; display: grid; gap: 14px; }
.check-list li { display: flex; align-items: flex-start; gap: 11px; }
.check-list svg { flex: 0 0 auto; width: 21px; color: var(--yellow); margin-top: 2px; }
.link-row { display: flex; gap: 24px; flex-wrap: wrap; }
.link-row a { display: inline-flex; align-items: center; gap: 7px; color: var(--yellow); font-weight: 700; text-decoration: none; }
.water-photo { margin: 0; background: #0e291e; border-radius: 8px; overflow: hidden; box-shadow: var(--shadow); }
.water-photo img { width: 100%; aspect-ratio: 4/3; object-fit: cover; }
.water-photo figcaption { padding: 12px 15px; color: rgba(255,255,255,.72); font-size: .84rem; }

.article-grid { display: grid; grid-template-columns: 1.2fr 1fr .8fr; gap: 20px; }
.article-card { min-width: 0; background: var(--white); border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.article-card img { width: 100%; aspect-ratio: 16/10; object-fit: cover; }
.article-content { padding: 20px; }
.category { display: inline-block; margin-bottom: 8px; color: var(--blue); font-size: .78rem; font-weight: 800; }
.category.safety { color: var(--coral); }
.category.soil { color: var(--green-700); }
.article-content h3 { margin: 0 0 8px; font-size: 1.25rem; line-height: 1.35; }
.article-content p { margin: 0 0 18px; color: var(--muted); }
.article-content a { display: inline-flex; align-items: center; gap: 8px; color: var(--green-700); font-weight: 700; text-decoration: none; }
.quick-card { display: flex; flex-direction: column; justify-content: center; background: #f1e4b8; border-color: #e2d49e; }
.quick-icon { width: 58px; height: 58px; display: grid; place-items: center; margin: 24px 20px 0; color: var(--white); background: var(--coral); border-radius: 8px; }
.quick-icon svg { width: 30px; height: 30px; }

.calculator-band { max-width: 1180px; margin: 0 auto 92px; padding: 44px; display: grid; grid-template-columns: .8fr 1.2fr; gap: 50px; align-items: center; background: var(--white); border: 1px solid var(--line); border-left: 6px solid var(--yellow); }
.calculator-copy p:last-child { color: var(--muted); }
.calculator { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.calculator label { display: grid; gap: 7px; font-weight: 700; }
.calculator select, .number-field { min-height: 48px; border: 1px solid var(--line); background: var(--paper); border-radius: 6px; }
.calculator select { width: 100%; padding: 0 12px; }
.number-field { display: flex; align-items: center; }
.number-field input { width: 100%; min-width: 0; padding: 0 12px; border: 0; outline: 0; background: transparent; }
.number-field span { padding: 0 12px; color: var(--muted); }
.estimate { grid-column: 1 / -1; min-height: 104px; display: grid; grid-template-columns: 1fr auto; align-items: center; padding: 18px 20px; color: var(--white); background: var(--blue); border-radius: 6px; }
.estimate strong { font-size: 1.8rem; }
.estimate small { grid-column: 1 / -1; color: rgba(255,255,255,.75); }

.follow-band { padding: 68px max(24px, calc((100vw - 1132px) / 2)); display: flex; align-items: center; justify-content: space-between; gap: 40px; color: var(--white); background: var(--coral); }
.follow-band p:not(.kicker) { margin-bottom: 0; color: rgba(255,255,255,.82); }
footer { padding: 28px max(24px, calc((100vw - 1132px) / 2)); display: grid; grid-template-columns: auto 1fr auto; gap: 24px; align-items: center; color: rgba(255,255,255,.72); background: var(--green-950); }
.footer-brand { display: flex; align-items: center; gap: 9px; color: var(--white); }
footer p { margin: 0; text-align: center; font-size: .85rem; }
footer > a { width: 38px; height: 38px; display: grid; place-items: center; color: var(--white); border: 1px solid rgba(255,255,255,.24); border-radius: 6px; }

@media (max-width: 900px) {
  .desktop-nav { display: none; }
  .menu-button { display: grid; }
  .hero { min-height: 680px; }
  .hero-shade { background: linear-gradient(90deg, rgba(8,25,17,.84), rgba(8,25,17,.25)); }
  .price-strip { justify-content: flex-start; overflow-x: auto; }
  .water-layout { grid-template-columns: 1fr; }
  .article-grid { grid-template-columns: 1fr 1fr; }
  .quick-card { grid-column: 1 / -1; }
  .calculator-band { margin-inline: 24px; grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
  .nav-wrap { height: 62px; padding-inline: 16px; }
  .hero { min-height: 650px; align-items: flex-end; padding-bottom: 86px; }
  .hero-image { object-position: 64% center; }
  .hero-shade { background: linear-gradient(0deg, rgba(8,25,17,.94) 0%, rgba(8,25,17,.4) 72%); }
  .hero-content { width: calc(100% - 32px); padding: 100px 0 34px; }
  .hero h1 { font-size: 3.2rem; }
  .hero-copy { margin: 18px 0 24px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 14px; }
  .price-strip span { padding: 12px 18px; }
  .section { padding: 68px 16px; }
  .section-heading { align-items: flex-start; flex-direction: column; }
  .price-toolbar { align-items: stretch; flex-direction: column; }
  .search-field { min-width: 0; }
  .segmented { width: 100%; }
  .segment { flex: 1; }
  .water-layout { padding: 66px 16px; gap: 34px; }
  .article-grid { grid-template-columns: 1fr; }
  .quick-card { grid-column: auto; }
  .calculator-band { margin: 0 16px 68px; padding: 28px 20px; gap: 28px; }
  .calculator { grid-template-columns: 1fr; }
  .estimate { grid-column: auto; grid-template-columns: 1fr; }
  .estimate strong { font-size: 1.55rem; }
  .estimate small { grid-column: auto; }
  .follow-band { align-items: flex-start; flex-direction: column; padding: 54px 16px; }
  footer { grid-template-columns: 1fr auto; padding: 26px 16px; }
  footer p { grid-column: 1 / -1; grid-row: 2; text-align: left; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}
.product-picks { margin-top: 52px; padding-top: 36px; border-top: 1px solid var(--line); }
.product-picks-heading { display: grid; grid-template-columns: 1fr minmax(280px, 440px); gap: 40px; align-items: end; margin-bottom: 22px; }
.product-picks-heading h3 { margin: 0; font-size: 1.65rem; }
.product-picks-heading > p { margin: 0; color: var(--muted); font-size: .9rem; }
.product-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; }
.product-card { min-width: 0; display: grid; grid-template-rows: auto 1fr auto; gap: 16px; padding: 18px; background: var(--white); border: 1px solid var(--line); border-radius: 8px; }
.product-icon { width: 42px; height: 42px; display: grid; place-items: center; color: var(--white); background: var(--blue); border-radius: 6px; }
.product-icon.repair { background: var(--green-700); }
.product-icon.safety { background: var(--coral); }
.product-icon.grow { color: var(--green-950); background: var(--yellow); }
.product-icon svg { width: 22px; height: 22px; }
.product-use { color: var(--muted); font-size: .75rem; font-weight: 800; }
.product-card h4 { margin: 4px 0 8px; font-size: 1rem; line-height: 1.45; }
.product-card p { margin: 0; color: var(--muted); font-size: .88rem; }
.product-meta { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; margin-top: 14px; }
.product-meta strong { color: var(--green-700); }
.product-meta span { color: var(--muted); font-size: .75rem; white-space: nowrap; }
.product-card > a { display: inline-flex; align-items: center; justify-content: center; gap: 7px; min-height: 42px; color: var(--white); background: var(--green-700); border-radius: 6px; text-decoration: none; font-weight: 700; }
.product-card > a:hover { background: #318a61; }
.product-card > a svg { width: 17px; }

.
@media (max-width: 900px) { .product-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 620px) { .product-picks-heading { grid-template-columns: 1fr; gap: 12px; } .product-grid { grid-template-columns: 1fr; } }