:root {
  --sea: #1b3a4b;
  --mist: #e7eef3;
  --ink: #1b2830;
  --muted: #52616b;
  --line: #c5d3dc;
  --paper: #ffffff;
  --link: #0f6e62;
  --amber: #b86112;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: "Noto Sans Khmer", "Leelawadee UI", "Khmer UI", sans-serif;
  font-size: 18px;
  line-height: 1.75;
}

a { color: var(--link); }
img { max-width: 100%; height: auto; }

.skip {
  position: absolute;
  left: 0.6rem;
  top: -3rem;
  background: var(--sea);
  color: var(--mist);
  padding: 0.4rem 0.7rem;
  z-index: 2;
}
.skip:focus { top: 0.6rem; }

.shell {
  display: grid;
  grid-template-columns: 16rem minmax(0, 1fr);
  min-height: 100vh;
}

.side {
  background: var(--sea);
  color: var(--mist);
  padding: 1.3rem 1.1rem 2rem;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
}
.brand {
  display: grid;
  color: var(--mist);
  text-decoration: none;
  margin-bottom: 1.1rem;
}
.brand strong { font-size: 1.7rem; line-height: 1.2; }
.brand span { font-size: 0.92rem; opacity: 0.85; }
.side nav { display: grid; gap: 0.15rem; }
.side nav a {
  color: var(--mist);
  text-decoration: none;
  padding: 0.38rem 0;
  border-top: 1px solid rgba(231, 238, 243, 0.22);
}
.side nav a:hover { color: #f3d2b0; }

.main {
  padding: 1.4rem 1.5rem 2.4rem;
  max-width: 54rem;
}

.crumbs { font-size: 0.92rem; margin: 0 0 1rem; }
.crumbs ol { display: flex; gap: 0.4rem; list-style: none; padding: 0; margin: 0; }
.crumbs li:not(:last-child)::after { content: "/"; margin-left: 0.4rem; color: var(--muted); }
.crumbs a { color: var(--sea); }

.eyebrow { margin: 0; color: var(--amber); font-weight: 700; }
h1 {
  font-size: clamp(1.9rem, 3.6vw, 2.7rem);
  line-height: 1.3;
  margin: 0.2rem 0 0.45rem;
}
.meta { margin: 0 0 0.8rem; color: var(--muted); font-size: 0.92rem; }
.lead { font-size: 1.06rem; }

h2 {
  font-size: 1.4rem;
  line-height: 1.4;
  margin: 2.1rem 0 0.55rem;
}
h2 .num {
  display: block;
  color: var(--amber);
  font-size: 0.92rem;
  font-weight: 700;
}
h3 { font-size: 1.08rem; line-height: 1.45; margin: 1rem 0 0.25rem; }

.shot {
  margin: 1rem 0 1.2rem;
  background: var(--paper);
  padding: 0.55rem 0.55rem 0.7rem;
}
.shot img { display: block; width: 100%; }
.shot figcaption { margin: 0.45rem 0.15rem 0; color: var(--muted); font-size: 0.92rem; }

.meter {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
  padding: 0;
  margin: 0.8rem 0 0;
  background: var(--paper);
  border: 1px solid var(--sea);
}
.meter li { padding: 0.75rem 0.8rem 0.9rem; }
.meter li + li { border-left: 1px solid var(--line); }
.meter h3 { margin-top: 0; }
.meter p { margin: 0.2rem 0 0; }

.steps { margin: 0.4rem 0 0; padding: 0; list-style: none; }
.steps li {
  padding: 0.7rem 0 0.7rem 0.9rem;
  border-left: 3px solid var(--sea);
  margin: 0.55rem 0;
}
.steps h3 { margin-top: 0; }
.steps p { margin: 0.2rem 0 0; }

.words { margin: 0.4rem 0 0; }
.words div {
  display: grid;
  grid-template-columns: 11rem minmax(0, 1fr);
  gap: 0.6rem 1rem;
  padding: 0.55rem 0.7rem;
}
.words div:nth-child(odd) { background: var(--paper); }
.words dt { font-weight: 700; }
.words dd { margin: 0; color: var(--muted); }

.faq details {
  background: var(--paper);
  padding: 0.7rem 0.85rem;
  margin: 0.45rem 0;
}
.faq summary { cursor: pointer; font-weight: 700; }
.faq p { margin: 0.4rem 0 0; }

.site-footer {
  margin-top: 2rem;
  padding-top: 0.9rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.95rem;
}
.site-footer p { margin: 0.25rem 0; }

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: static; height: auto; }
  .side nav { grid-template-columns: 1fr 1fr; }
  .meter { grid-template-columns: 1fr 1fr; }
  .meter li:nth-child(odd) { border-left: 0; }
  .meter li:nth-child(n + 3) { border-top: 1px solid var(--line); }
  .words div { grid-template-columns: 1fr; gap: 0.15rem; }
}

@media (max-width: 520px) {
  body { font-size: 16.5px; }
  .main { padding: 1rem 0.9rem 2rem; }
  .meter, .side nav { grid-template-columns: 1fr; }
  .meter li + li { border-left: 0; border-top: 1px solid var(--line); }
}
.poster img { width: min(100%, 24rem); height: auto; }