:root {
  --ink: #17211d;
  --muted: #58665f;
  --paper: #f7f5ef;
  --surface: #fffdf8;
  --green: #176b55;
  --green-dark: #0f4c3e;
  --mint: #dcebe4;
  --line: #ccd7d1;
  --warm: #e9bd73;
  --notice: #fff9ec;
  --focus-dark: #7a3e00;
  --focus-light: #ffe29a;
  --shadow: 0 18px 45px rgba(23, 33, 29, .09);
  font-family: "Noto Sans Thai", "Leelawadee UI", Tahoma, system-ui, sans-serif;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); line-height: 1.7; }
a { color: var(--green-dark); text-underline-offset: .2em; }
a:hover { color: var(--green); }
.shell { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.skip-link { position: fixed; z-index: 10; top: .5rem; left: .5rem; padding: .7rem 1rem; background: var(--ink); color: white; transform: translateY(-150%); }
.skip-link:focus { transform: translateY(0); }

.site-header { border-bottom: 1px solid var(--line); background: rgba(247, 245, 239, .96); }
.header-inner { min-height: 76px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; }
.brand { display: inline-flex; align-items: center; gap: .7rem; color: var(--ink); font-weight: 800; text-decoration: none; letter-spacing: -.01em; }
.brand-mark { display: grid; place-items: center; width: 2.25rem; height: 2.25rem; border-radius: 50%; background: var(--green); color: white; font-family: Georgia, serif; }
nav { display: flex; flex-wrap: wrap; gap: .35rem 1.2rem; }
nav a { color: var(--muted); font-size: .94rem; font-weight: 650; text-decoration: none; }
nav a[aria-current="page"] { color: var(--green-dark); text-decoration: underline; text-decoration-thickness: 2px; }

.hero { padding-block: clamp(4rem, 10vw, 8rem); position: relative; overflow: hidden; }
.hero::after { content: ""; position: absolute; right: 1%; top: 12%; width: min(34vw, 390px); aspect-ratio: 1; border: 1px solid var(--green); border-radius: 50%; box-shadow: inset 0 0 0 2.5rem var(--paper), inset 0 0 0 2.6rem var(--warm); opacity: .35; pointer-events: none; }
.hero > * { position: relative; z-index: 1; max-width: 790px; }
.eyebrow { margin: 0 0 .7rem; color: var(--green); font-size: .78rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.25; letter-spacing: -.025em; }
h1 { margin: 0; font-size: clamp(2.4rem, 7vw, 5.2rem); max-width: 950px; }
h2 { margin: 0 0 1rem; font-size: clamp(1.7rem, 4vw, 2.75rem); }
h3 { font-size: 1.3rem; }
.lede { max-width: 760px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .65rem 1.1rem; border: 1px solid var(--green-dark); border-radius: .35rem; font-weight: 750; text-decoration: none; }
.button.primary { color: white; background: var(--green-dark); }
.button.primary:hover { color: white; background: var(--green); }
.button.secondary { background: transparent; }

.section { padding-block: clamp(3rem, 7vw, 6rem); border-top: 1px solid var(--line); }
.grid { display: grid; gap: 1rem; }
.grid.three { grid-template-columns: repeat(3, 1fr); }
.card, .panel { padding: clamp(1.25rem, 3vw, 2rem); border: 1px solid var(--line); border-radius: .5rem; background: var(--surface); box-shadow: var(--shadow); }
.card h3 { margin: 1.2rem 0 .45rem; }
.card p, .panel p { margin-bottom: 0; color: var(--muted); }
.step { color: var(--green); font: 700 .85rem/1 Georgia, serif; letter-spacing: .1em; }
.split { display: grid; grid-template-columns: .8fr 1.2fr; gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.contact { display: flex; align-items: center; justify-content: space-between; gap: 2rem; }
.contact p { color: var(--muted); }

.policy { max-width: 860px; }
.policy-hero { padding-block: clamp(3.5rem, 8vw, 6.5rem); }
.policy-hero h1 { font-size: clamp(2.4rem, 7vw, 4.8rem); }
.policy section { padding-block: 2.4rem; border-top: 1px solid var(--line); }
.policy section h2 { display: flex; gap: .75rem; font-size: clamp(1.35rem, 3vw, 1.85rem); }
.policy section h2 span { color: var(--green); font: 700 .8rem/2 Georgia, serif; }
.policy p, .policy li { color: #3e4b45; }
.policy li + li { margin-top: .55rem; }
.notice { margin-top: 1.25rem; padding: 1.1rem 1.25rem; border-left: 4px solid var(--warm); background: var(--notice); }
.notice p { margin: 0; }

footer { margin-top: 3rem; padding-block: 2.5rem; color: #d8e4de; background: var(--ink); }
footer a, footer a:hover { color: white; }
.footer-inner { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; }
.footer-inner > :last-child { text-align: right; }

:focus-visible { outline: 3px solid var(--focus-dark); outline-offset: 3px; }
footer a:focus-visible { outline-color: var(--focus-light); }
@media (max-width: 760px) {
  .header-inner { padding-block: .8rem; align-items: flex-start; flex-direction: column; }
  .hero::after { right: -18%; top: 8%; width: 68vw; }
  .grid.three, .split { grid-template-columns: 1fr; }
  .contact { align-items: flex-start; flex-direction: column; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-inner > :last-child { text-align: left; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
@media (forced-colors: active) { :focus-visible { outline-color: Highlight; } }