/* Tâm Thành proposed identity: warm, restrained editorial surfaces. */
:root {
  color-scheme: light;
  --green: #164E45;
  --ink: #183C35;
  --muted: #456259;
  --surface: #F5F8F6;
  --soft: #E4EEE8;
  --clay: #A84728;
  --line: #CBDAD1;
  --paper: #F5F8F6;
  --serif: Georgia, 'Times New Roman', serif;
  --sans: 'Trebuchet MS', Arial, sans-serif;
  --content: 1160px;
  --gutter: clamp(1.25rem, 5vw, 4.5rem);
  --section-space: clamp(4.5rem, 9vw, 8rem);
  --focus: 3px solid #A84728;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--surface);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}
a { color: var(--green); text-underline-offset: .2em; text-decoration-thickness: .08em; }
a:hover { color: var(--clay); }
a:focus-visible, button:focus-visible { outline: var(--focus); outline-offset: 4px; }
img, svg { max-width: 100%; }
.skip-link {
  position: absolute;
  z-index: 5;
  top: .5rem;
  left: .5rem;
  padding: .75rem 1rem;
  transform: translateY(-160%);
  color: var(--paper);
  background: var(--green);
}
.skip-link:focus { transform: translateY(0); }
.shell { width: min(100% - 2 * var(--gutter), var(--content)); margin-inline: auto; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner {
  min-height: 88px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.brand { display: inline-flex; align-items: center; min-height: 52px; }
.brand img { display: block; width: 200px; height: auto; }
.header-tools { display: flex; align-items: center; justify-content: flex-end; gap: clamp(.75rem, 2vw, 1.75rem); }
.main-nav { display: flex; flex-wrap: wrap; align-items: center; gap: .25rem; }
.main-nav a, .language a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .5rem .75rem;
  color: var(--ink);
  font-size: .94rem;
  text-decoration: none;
}
.main-nav a:hover, .language a:hover { text-decoration: underline; }
.language { display: flex; border-left: 1px solid var(--line); padding-left: .75rem; }
.language a[aria-current="page"] { color: var(--clay); font-weight: 700; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(250px, .85fr);
  align-items: center;
  gap: clamp(2.5rem, 8vw, 7rem);
  padding-block: clamp(4rem, 9vw, 8.5rem);
}
.hero-copy { max-width: 690px; }
.eyebrow { margin: 0 0 1rem; color: var(--clay); font-size: .82rem; font-weight: 700; letter-spacing: .095em; text-transform: uppercase; }
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: var(--serif); font-weight: 400; line-height: 1.12; }
h1 { max-width: 14ch; margin-bottom: 1.5rem; font-size: clamp(2.75rem, 6.5vw, 5.4rem); letter-spacing: -.025em; text-wrap: balance; }
h2 { margin-bottom: 1.25rem; font-size: clamp(2rem, 4vw, 3.35rem); letter-spacing: -.035em; }
h3 { margin-bottom: .75rem; font-size: clamp(1.35rem, 2vw, 1.75rem); }
.lede { max-width: 53ch; color: var(--muted); font-size: clamp(1.12rem, 1.8vw, 1.35rem); line-height: 1.65; }
.hero-meta { margin: 2rem 0 0; padding-top: 1.1rem; border-top: 1px solid var(--line); color: var(--muted); font-size: .95rem; }
.hero-note {
  min-height: 290px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-top: 1px solid var(--line);
}
.hero-note p { max-width: 28ch; margin-bottom: .75rem; font-family: var(--serif); font-size: clamp(1.7rem, 3vw, 2.35rem); line-height: 1.25; }
.hero-note small { color: var(--muted); }
.section { padding-block: var(--section-space); border-top: 1px solid var(--line); }
.section--soft { background: var(--soft); }
.section-heading { display: grid; grid-template-columns: minmax(0, .9fr) minmax(250px, 1.1fr); align-items: end; gap: 2rem; margin-bottom: clamp(2rem, 5vw, 4rem); }
.section-heading h2 { max-width: 16ch; margin-bottom: 0; }
.section-heading p { max-width: 50ch; margin-bottom: 0; color: var(--muted); }
.story-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(2rem, 6vw, 5.5rem); }
.story-grid p { max-width: 55ch; color: var(--muted); }
.fact { padding-top: 1.25rem; border-top: 1px solid var(--line); }
.fact dt { color: var(--muted); font-size: .9rem; }
.fact dd { margin: .4rem 0 0; font-family: var(--serif); font-size: 1.5rem; }
.product-panel { display: grid; grid-template-columns: minmax(0, .75fr) minmax(280px, 1.25fr); gap: clamp(2rem, 7vw, 6rem); align-items: start; }
.status-label { display: inline-flex; align-items: center; min-height: 44px; padding: .25rem .85rem; border: 1px solid var(--green); border-radius: 999px; color: var(--green); font-size: .9rem; font-weight: 700; }
.product-copy p { max-width: 62ch; color: var(--muted); }
.plans { margin: 1.5rem 0 0; padding: 0; list-style: none; }
.plans li { padding: 1rem 0; border-top: 1px solid var(--line); }
.plans strong { color: var(--ink); }
.notice { padding: clamp(1.5rem, 4vw, 2.5rem); border: 1px solid var(--line); background: var(--surface); }
.notice h3 { color: var(--clay); }
.notice p:last-child { margin-bottom: 0; }
.contact-band { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 2rem; padding-block: clamp(3rem, 7vw, 6rem); }
.contact-band h2 { max-width: 14ch; margin-bottom: .8rem; }
.contact-band p { max-width: 48ch; margin-bottom: 0; color: var(--muted); }
.button-link {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: .7rem 1.25rem;
  border: 1px solid var(--green);
  background: var(--green);
  color: var(--paper);
  font-weight: 700;
  text-decoration: none;
}
.button-link:hover { border-color: var(--clay); background: var(--clay); color: var(--paper); }
a:active { transform: translateY(2px); }
.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.5rem; padding-block: 1.5rem 2rem; color: var(--muted); font-size: .9rem; }
.footer-inner p { margin: 0; }
.footer-links { display: flex; flex-wrap: wrap; gap: .4rem 1.25rem; }
.footer-links a { display: inline-flex; min-height: 44px; align-items: center; }
.page-intro { padding-block: clamp(3.5rem, 8vw, 6rem) 2rem; }
.page-intro h1 { max-width: 18ch; font-size: clamp(2.5rem, 5.5vw, 4.5rem); }
.prose { max-width: 76ch; padding-bottom: var(--section-space); }
.prose h2 { margin-top: 2.5rem; font-size: clamp(1.6rem, 3vw, 2.25rem); }
.prose p, .prose li { color: var(--muted); }
.prose ul { padding-left: 1.25rem; }
.prose li + li { margin-top: .5rem; }
.prose .updated { font-size: .95rem; }
@media (max-width: 760px) {
  .header-inner { min-height: unset; align-items: flex-start; flex-direction: column; padding-block: 1rem; gap: .5rem; }
  .header-tools { width: 100%; justify-content: space-between; gap: .5rem; }
  .main-nav { gap: 0; }
  .main-nav a { padding-inline: .55rem; }
  .language { padding-left: .4rem; }
  .language a { padding-inline: .55rem; }
  .hero, .section-heading, .story-grid, .product-panel { grid-template-columns: 1fr; }
  .hero { gap: 2rem; }
  .hero-note { min-height: 220px; }
  .section-heading { align-items: start; gap: 1rem; }
  .contact-band { grid-template-columns: 1fr; align-items: start; }
  .button-link { justify-self: start; }
}
@media (max-width: 390px) {
  .main-nav a { padding-inline: .35rem; font-size: .88rem; }
  .header-tools { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}