:root {
  --bg: #10140f;
  --bg-2: #1a2218;
  --text: #f3f6ef;
  --muted: #b7c2ae;
  --line: #31402c;
  --accent: #e2b657;
  --accent-ink: #1c1404;
  --warn: #e8c56b;
  --max: 46rem;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Noto Sans Khmer", "Khmer OS", "Leelawadee UI", "Noto Sans", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 1.05rem;
}
a { color: var(--accent); }
.wrap { width: min(var(--max), calc(100% - 2rem)); margin: 0 auto; }
.skip { position: absolute; left: -999px; top: 0; }
.skip:focus { left: 1rem; top: 1rem; background: var(--bg-2); padding: 0.5rem 1rem; }
.age {
  background: #241c0a;
  color: var(--warn);
  font-size: 0.85rem;
  padding: 0.45rem 1rem;
  text-align: center;
}
header { background: var(--bg-2); border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 10; }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 0.8rem; padding: 0.75rem 0; flex-wrap: wrap; }
.brand { color: var(--text); text-decoration: none; font-weight: 700; letter-spacing: 0.04em; }
.brand span { display: block; color: var(--accent); font-weight: 500; font-size: 0.75rem; letter-spacing: 0; }
.langs { display: flex; gap: 0.35rem; }
.langs a {
  color: var(--muted);
  text-decoration: none;
  border: 1px solid var(--line);
  padding: 0.15rem 0.45rem;
  font-size: 0.85rem;
}
.langs a[aria-current="true"] { color: var(--text); border-color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: 0.65rem 0.9rem; }
nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; }
nav a[aria-current="page"] { color: var(--text); }
.btn {
  display: inline-block;
  background: var(--accent);
  color: var(--accent-ink);
  text-decoration: none;
  font-weight: 700;
  padding: 0.55rem 0.95rem;
  border-radius: 4px;
}
main { padding: 1.6rem 0 3rem; }
h1 { font-size: 1.7rem; line-height: 1.35; margin: 0 0 0.8rem; }
h2 { font-size: 1.2rem; margin: 1.8rem 0 0.6rem; }
p { margin: 0 0 0.9rem; }
.lead { color: var(--muted); }
.cards { display: grid; grid-template-columns: 1fr; gap: 0.75rem; margin: 1rem 0 1.4rem; }
@media (min-width: 640px) { .cards { grid-template-columns: 1fr 1fr; } }
.card {
  background: var(--bg-2);
  border: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
  display: block;
  padding: 0.9rem 1rem;
}
.card:hover { border-color: var(--accent); }
.card h3 { margin: 0 0 0.3rem; font-size: 1.05rem; }
.card p { margin: 0; color: var(--muted); font-size: 0.95rem; }
ul { padding-left: 1.2rem; margin: 0 0 1rem; }
li { margin: 0.3rem 0; }
.note { border-left: 3px solid var(--warn); padding: 0.6rem 0.9rem; background: #1c1a12; color: var(--muted); margin: 1rem 0; }
footer { border-top: 1px solid var(--line); padding: 1.4rem 0 2.2rem; color: var(--muted); font-size: 0.9rem; }
footer a { color: var(--muted); }
.foot-nav { display: flex; flex-wrap: wrap; gap: 0.6rem 1rem; margin-bottom: 0.7rem; }
.actions { display: flex; flex-wrap: wrap; gap: 0.6rem; margin: 0 0 1rem; }
.btn-ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
h3 { font-size: 1.05rem; margin: 1.15rem 0 0.4rem; }
.faq details { border-bottom: 1px solid var(--line); padding: 0.7rem 0; }
.faq summary { cursor: pointer; font-weight: 650; }
:root { --shell-r: 14px; }
.tabbar, .appbar { display: none; }
.quick-title { font-size: 1rem; margin: 1.25rem 0 0.6rem; color: var(--muted); font-weight: 600; }
.quick { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.5rem; margin: 0 0 1.5rem; }
.quick a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 0.3rem;
  min-height: 4.6rem; padding: 0.6rem 0.25rem; background: var(--bg-2); border: 1px solid var(--line);
  border-radius: var(--shell-r); text-decoration: none; color: var(--text); font-size: 0.8rem; text-align: center; line-height: 1.3;
}
.quick .qi { font-size: 1.4rem; line-height: 1; }
@media (max-width: 767px) {
  body { padding-bottom: calc(4.6rem + env(safe-area-inset-bottom)); font-size: 1rem; -webkit-tap-highlight-color: transparent; }
  .age { font-size: 0.72rem; padding: 0.3rem 0.75rem; }
  header { background: rgba(26, 34, 24, 0.94); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); }
  .header-row {
    display: grid; grid-template-columns: 1fr auto auto; grid-template-areas: "brand lang cta" "nav nav nav";
    gap: 0.5rem; padding: 0.55rem 0 0.5rem;
  }
  .header-row .brand { grid-area: brand; }
  .header-row > .langs { grid-area: lang; }
  .header-row > .btn { grid-area: cta; padding: 0.45rem 0.75rem; border-radius: 999px; font-size: 0.82rem; }
  .header-row nav {
    grid-area: nav; flex-wrap: nowrap; overflow-x: auto; gap: 0.4rem; scrollbar-width: none;
    margin: 0 -1rem; padding: 0 1rem;
  }
  .header-row nav::-webkit-scrollbar { display: none; }
  .header-row nav a {
    flex: none; padding: 0.3rem 0.75rem; border: 1px solid var(--line); border-radius: 999px;
    font-size: 0.85rem; background: var(--bg); white-space: nowrap;
  }
  .header-row nav a[aria-current="page"] { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
  main { padding: 1rem 0 2rem; }
  h1 { font-size: 1.45rem; }
  .actions .btn { flex: 1 1 0; text-align: center; border-radius: var(--shell-r); }
  .cards { grid-template-columns: 1fr 1fr; gap: 0.6rem; }
  .card { border-radius: var(--shell-r); }
  .appbar {
    display: flex; align-items: center; gap: 0.6rem; padding: 0.55rem 1rem;
    background: linear-gradient(90deg, rgba(226, 182, 87, 0.22), rgba(226, 182, 87, 0.05));
    border-bottom: 1px solid var(--line); color: var(--text); text-decoration: none;
  }
  .appbar-ico { font-size: 1.35rem; }
  .appbar-txt { flex: 1; min-width: 0; font-size: 0.78rem; line-height: 1.35; color: var(--muted); }
  .appbar-txt strong { display: block; color: var(--text); font-size: 0.9rem; }
  .appbar-cta {
    flex: none; background: var(--accent); color: var(--accent-ink); font-weight: 700; font-size: 0.82rem;
    padding: 0.4rem 0.8rem; border-radius: 999px;
  }
  .tabbar {
    display: grid; grid-template-columns: repeat(5, 1fr); position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
    background: rgba(16, 20, 15, 0.97); border-top: 1px solid var(--line);
    padding: 0.35rem 0.2rem calc(0.35rem + env(safe-area-inset-bottom));
  }
  .tabbar a {
    display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 0.12rem;
    min-height: 3rem; color: var(--muted); text-decoration: none; font-size: 0.68rem; line-height: 1.2; text-align: center;
  }
  .tabbar svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
  .tabbar a[aria-current="page"] { color: var(--accent); font-weight: 700; }
  .tabbar .tab-cta { color: var(--accent); font-weight: 700; }
  .tabbar--raised .tab-cta .ico {
    display: grid; place-items: center; width: 3rem; height: 3rem; margin-top: -1.45rem; border-radius: 50%;
    background: var(--accent); color: var(--accent-ink); border: 3px solid var(--bg);
    box-shadow: 0 4px 14px rgba(226, 182, 87, 0.35);
  }
  .tabbar--raised .tab-cta svg { width: 24px; height: 24px; stroke: var(--accent-ink); }
}