/* ═══════════════════════════════════════════════════════════════════════════
   Da Nang Briefing — Modernist design system (flat, Archivo, red on bone,
   0px radius, 2px rules). Shared across every page.
   ═══════════════════════════════════════════════════════════════════════════ */
:root {
  --color-bg: #f3f2f2;
  --color-surface: #eae9e9;
  --color-text: #201e1d;
  --color-accent: #ec3013;
  --color-divider: color-mix(in srgb, #201e1d 40%, transparent);

  --color-neutral-100: #f8f4f4;
  --color-neutral-200: #eae7e7;
  --color-neutral-300: #d7d3d3;
  --color-neutral-400: #bab6b6;
  --color-neutral-500: #9b9797;
  --color-neutral-600: #7d7979;
  --color-neutral-700: #605d5d;
  --color-neutral-800: #444141;
  --color-neutral-900: #2d2b2b;

  --color-accent-400: #ff9783;
  --color-accent-600: #dd2b0f;
  --color-accent-700: #ae1800;

  --font-heading: "Archivo", system-ui, sans-serif;
  --font-body: "Archivo", system-ui, sans-serif;

  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;

  --edge: clamp(18px, 3.2vw, 44px);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
:target { scroll-margin-top: 92px; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0;
}
p { margin: 0; }
a { color: var(--color-accent); text-decoration: none; text-underline-offset: 3px; }
a:hover { color: var(--color-accent-700); text-decoration: underline; }
img { display: block; max-width: 100%; }
:focus { outline: none; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
::selection { background: color-mix(in srgb, var(--color-accent) 30%, transparent); }

@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

/* ── photographs ────────────────────────────────────────────────────────── */
.photo {
  position: relative;
  margin: 0;
  overflow: hidden;
  background: var(--color-surface);
}
.photo > img { display: block; width: 100%; height: 100%; object-fit: cover; }
.hero__photo.photo { aspect-ratio: 4 / 3; }
.hero__photo.photo > img { position: absolute; inset: 0; }
.photo--tall { width: 100%; height: clamp(160px, 26vw, 320px); margin-top: 10px; }
.photo__credit {
  position: absolute;
  left: 0;
  bottom: 0;
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 7px;
  color: var(--color-bg);
  background: color-mix(in srgb, var(--color-text) 62%, transparent);
}

/* ── buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 12.5px;
  line-height: 1.2;
  color: var(--color-text);
  background: transparent;
  border: 1px solid transparent;
  padding: 9px 15px;
  white-space: nowrap;
}
.btn-primary { background: var(--color-accent); color: var(--color-bg); }
.btn-primary:hover { background: var(--color-accent-600); color: var(--color-bg); text-decoration: none; }
.btn-primary:active { background: var(--color-accent-700); }

/* ── masthead + nav + emergency strip ──────────────────────────────────── */
.masthead {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  padding: 14px var(--edge);
  border-bottom: 2px solid var(--color-divider);
}
.masthead__name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--color-text);
}
.masthead__name:hover { color: var(--color-accent); text-decoration: none; }
.masthead__dot { width: 10px; height: 10px; background: var(--color-accent); display: block; align-self: center; }
.masthead__tag {
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
}
.masthead__contact {
  margin-left: auto;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.topnav {
  display: flex;
  gap: clamp(14px, 2.4vw, 30px);
  padding: 10px var(--edge);
  border-bottom: 1px solid var(--color-divider);
  overflow-x: auto;
  scrollbar-width: thin;
}
.topnav a {
  flex: none;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
}
.topnav a:hover { color: var(--color-accent); text-decoration: none; }
.topnav a[aria-current="page"] { color: var(--color-text); border-bottom: 2px solid var(--color-accent); padding-bottom: 2px; }

.emergency {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 8px var(--edge);
  border-bottom: 2px solid var(--color-divider);
  background: var(--color-neutral-100);
}
.emergency__lbl {
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-neutral-700);
}
.emergency b { font-family: var(--font-heading); font-weight: 800; font-size: 12px; white-space: nowrap; }
.emergency b span { font-weight: 400; color: var(--color-neutral-700); }
.emergency b.clinic { color: var(--color-accent-700); }

/* ── hero ──────────────────────────────────────────────────────────────── */
.hero { padding: clamp(22px, 3.4vw, 48px) var(--edge) 0; }
.hero__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(20px, 2.6vw, 40px);
  align-items: end;
}
.hero__grid > .photo { align-self: stretch; }
.hero__grid > .photo:not(.hero__photo) { aspect-ratio: 4 / 3; }
.hero__kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  font-weight: 600;
}
.hero__kicker::before { content: ""; height: 2px; width: 44px; background: var(--color-accent); display: block; flex: none; }
.hero h1 {
  font-size: clamp(30px, 3.9vw, 54px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 16px;
  overflow-wrap: break-word;
}
.hero__lede {
  font-size: clamp(14px, 1.35vw, 18px);
  line-height: 1.5;
  max-width: 48ch;
  color: var(--color-neutral-800);
  margin-bottom: 12px;
}
.hero__note {
  font-size: 12.5px;
  line-height: 1.5;
  max-width: 52ch;
  color: var(--color-neutral-700);
  border-left: 2px solid var(--color-divider);
  padding-left: 12px;
}

/* ── numbers to save ───────────────────────────────────────────────────── */
.numbers {
  margin: clamp(22px, 2.8vw, 40px) var(--edge) 0;
  background: var(--color-text);
  color: var(--color-bg);
}
.numbers__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px clamp(14px, 1.8vw, 22px);
  border-bottom: 1px solid rgba(243, 242, 242, 0.28);
}
.numbers__head h2 { font-size: 14px; letter-spacing: 0.02em; text-transform: uppercase; }
.numbers__head span { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; opacity: 0.65; }
.numbers__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(158px, 1fr)); }
.numbers__cell {
  padding: 14px clamp(14px, 1.8vw, 22px);
  border-right: 1px solid rgba(243, 242, 242, 0.28);
  border-bottom: 1px solid rgba(243, 242, 242, 0.28);
}
.numbers__cell dt { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; opacity: 0.6; margin-bottom: 4px; }
.numbers__cell--clinic dt { opacity: 1; color: var(--color-accent-400); }
.numbers__cell dd { margin: 0; font-family: var(--font-heading); font-weight: 800; font-size: clamp(22px, 2.3vw, 30px); line-height: 1; }
.numbers__cell--sm dd { font-size: clamp(16px, 1.65vw, 21px); line-height: 1.15; }
.numbers__cell--wide { grid-column: span 2; }

/* ── section headings ──────────────────────────────────────────────────── */
main { padding: 0 var(--edge) clamp(30px, 3vw, 56px); }
.section-h {
  font-size: clamp(20px, 2.3vw, 28px);
  letter-spacing: -0.02em;
  padding-top: clamp(30px, 3.4vw, 52px);
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-divider);
}
.section-h-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 2px solid var(--color-divider);
}
.section-h-row .section-h { border: 0; padding-bottom: 0; }

/* ── homepage: category cards ──────────────────────────────────────────── */
.cat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: clamp(16px, 2vw, 28px);
  padding-top: clamp(18px, 2vw, 28px);
}
.cat-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  background: var(--color-surface);
  color: var(--color-text);
  border-top: 2px solid var(--color-text);
}
.cat-card:hover { background: var(--color-neutral-200); text-decoration: none; outline: 2px solid var(--color-accent); }
.cat-card__n { font-family: var(--font-heading); font-weight: 800; font-size: 22px; color: var(--color-accent); line-height: 1; }
.cat-card h3 { font-size: 18px; letter-spacing: -0.01em; }
.cat-card p { font-size: 13px; color: var(--color-neutral-800); flex: 1; }
.cat-card__more { font-size: 10.5px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-neutral-700); font-weight: 600; }

/* ── homepage: checklist ───────────────────────────────────────────────── */
.ck-filter { display: inline-flex; border: 1px solid var(--color-divider); }
.ck-filter button {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 7px 12px;
  background: transparent;
  border: 0;
  cursor: pointer;
  color: var(--color-neutral-700);
}
.ck-filter button + button { border-left: 1px solid var(--color-divider); }
.ck-filter button[aria-pressed="true"] { background: var(--color-accent); color: var(--color-bg); }

.ck {
  columns: 2 320px;
  column-gap: clamp(24px, 4vw, 56px);
  padding-top: clamp(18px, 2vw, 28px);
}
.ck__group { break-inside: avoid; margin-bottom: 22px; }
.ck__group h3 { font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-neutral-700); padding-bottom: 6px; border-bottom: 1px solid var(--color-divider); margin-bottom: 6px; }
.ck__group h3 a { color: inherit; }
.ck__group ul { list-style: none; margin: 0; padding: 0; }
.ck__item a {
  display: flex;
  gap: 9px;
  padding: 6px 0;
  color: var(--color-text);
  font-size: 13.5px;
  line-height: 1.35;
  border-bottom: 1px solid color-mix(in srgb, var(--color-text) 8%, transparent);
}
.ck__item a:hover { color: var(--color-accent); text-decoration: none; }
.ck__item.is-hidden { display: none; }
.ck__group.is-empty { display: none; }

.mk {
  flex: none;
  width: 16px; height: 16px;
  display: grid;
  place-items: center;
  font-size: 9px;
  font-weight: 800;
  line-height: 1;
  border: 1.5px solid currentColor;
  margin-top: 1px;
}
.mk--do { color: var(--color-text); }
.mk--never { color: var(--color-accent); }

/* ── category page ─────────────────────────────────────────────────────── */
.cat-page { padding-top: clamp(20px, 2.4vw, 34px); }
.crumbs { font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--color-neutral-600); margin-bottom: 18px; }
.crumbs a { color: var(--color-neutral-700); }

.cat-hd {
  display: flex;
  align-items: flex-start;
  gap: clamp(14px, 2.4vw, 30px);
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--color-divider);
}
.cat-hd__n { font-family: var(--font-heading); font-weight: 800; font-size: clamp(34px, 4.6vw, 60px); line-height: 0.85; color: var(--color-accent); }
.cat-hd > div { flex: 1 1 260px; min-width: 0; }
.cat-hd h1 { font-size: clamp(26px, 3.4vw, 44px); letter-spacing: -0.025em; margin-bottom: 10px; }
.cat-hd__blurb { font-size: clamp(14px, 1.4vw, 17px); line-height: 1.5; color: var(--color-neutral-800); max-width: 62ch; margin-bottom: 8px; }
.cat-hd__tally { font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-neutral-700); }

.entries {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: clamp(20px, 2.6vw, 40px);
  padding-top: clamp(22px, 2.6vw, 38px);
}
.entry {
  position: relative;
  padding-top: 18px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.entry__rule { position: absolute; top: 0; left: 0; right: 0; height: 2px; background: var(--color-text); }
.entry--never .entry__rule { background: var(--color-accent); }
.entry__meta { display: flex; align-items: center; gap: 9px; }
.kind { font-family: var(--font-heading); font-weight: 800; font-size: 10.5px; letter-spacing: 0.12em; text-transform: uppercase; }
.kind--do { color: var(--color-text); }
.kind--never { color: var(--color-accent); }
.entry__link { margin-left: auto; color: var(--color-neutral-400); font-weight: 800; }
.entry__link:hover { color: var(--color-accent); text-decoration: none; }
.entry__h { font-size: clamp(17px, 1.7vw, 21px); line-height: 1.15; letter-spacing: -0.015em; }
.entry__s { font-size: 14px; line-height: 1.5; color: var(--color-neutral-900); font-weight: 600; }
.entry__d { font-size: 13.5px; line-height: 1.6; color: var(--color-neutral-800); }
.entry__src {
  align-self: flex-start;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 9px;
  background: var(--color-surface);
  color: var(--color-neutral-800);
}
.entry__src span { color: var(--color-neutral-600); }

/* ── FAQ (category pages) ──────────────────────────────────────────────── */
.faq { margin-top: clamp(28px, 3.4vw, 52px); }
.faq .section-h { padding-top: 0; }
.faq__list { border-top: 2px solid var(--color-divider); }
.faq__item { border-bottom: 1px solid var(--color-divider); }
.faq__item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.faq__item summary::-webkit-details-marker { display: none; }
.faq__item summary::before {
  content: "+";
  flex: none;
  width: 18px;
  font-size: 18px;
  line-height: 1.15;
  color: var(--color-accent);
  text-align: center;
}
.faq__item[open] summary::before { content: "\2013"; }
.faq__item[open] summary { color: var(--color-accent-700); }
.faq__a { padding: 0 0 16px 30px; }
.faq__a p { font-size: 13.5px; line-height: 1.6; color: var(--color-neutral-800); max-width: 68ch; }
.faq__item summary:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.sib {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2px;
  margin-top: clamp(28px, 3.4vw, 52px);
  border-top: 2px solid var(--color-divider);
  padding-top: 18px;
}
.sib__a {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  background: var(--color-surface);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 600;
}
.sib__a:hover { background: var(--color-neutral-200); text-decoration: none; outline: 2px solid var(--color-accent); }
.sib__a span { font-family: var(--font-heading); font-weight: 800; font-size: 10px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-accent); }
.sib__a--next { text-align: right; align-items: flex-end; }
.sib__a--home { text-align: center; align-items: center; justify-content: center; }

/* ── footer ────────────────────────────────────────────────────────────── */
footer {
  border-top: 2px solid var(--color-divider);
  padding: clamp(20px, 2.6vw, 36px) var(--edge) clamp(28px, 3vw, 48px);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: clamp(16px, 2vw, 32px);
}
footer h2 { font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-neutral-700); margin-bottom: 8px; }
footer p { font-size: 12.5px; line-height: 1.55; max-width: 60ch; }
footer .verify h2, .foot-contact h2 { color: var(--color-accent-700); }
.foot-contact .btn { margin-top: 4px; }
.foot-contact__addr { margin-top: 10px; font-size: 11px; color: var(--color-neutral-600); word-break: break-all; }
.foot-updated {
  grid-column: 1 / -1;
  border-top: 1px solid var(--color-divider);
  padding-top: 14px;
  font-size: 11px;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--color-neutral-600);
}