:root {
  --haze: #E4E9EC;
  --haze-deep: #D3DBE0;
  --paper: #F6F8F9;
  --basalt: #2A2D31;
  --basalt-soft: #545A61;
  --pacific: #123A5E;
  --sulfur: #C99A06;
  --sulfur-ink: #7A5C00;
  --ember: #B83A26;
  --lichen: #4F7358;
  --slate: #66707B;
  --replay: #8E2FB8;
  --radius-lg: 14px;
  --radius-sm: 6px;
  --font: "Newsreader", "Source Serif 4", "Noto Serif", Georgia, serif; /* Literata & Gelasio mis-render the ʻokina (U+02BB) */
  --step: clamp(1rem, 0.95rem + 0.3vw, 1.125rem);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--haze);
  color: var(--basalt);
  font-family: var(--font);
  font-size: var(--step);
  line-height: 1.55;
  font-variant-numeric: tabular-nums;
}
img { max-width: 100%; display: block; }
a { color: var(--pacific); text-underline-offset: 0.15em; }
a:hover { text-decoration-thickness: 2px; }
:focus-visible { outline: 3px solid var(--sulfur); outline-offset: 2px; border-radius: 3px; }

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 16px; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 8px; background: var(--paper); padding: 8px 12px; z-index: 10; }

h1, h2, h3 { font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; margin: 0 0 0.4em; }
h1 { font-size: clamp(1.65rem, 1.2rem + 2.2vw, 2.6rem); max-width: 22ch; }
h2 { font-size: clamp(1.35rem, 1.1rem + 1.2vw, 1.9rem); }
h3 { font-size: 1.1rem; }
.lede { color: var(--basalt-soft); max-width: 62ch; margin: 0 0 1rem; }

/* Header */
.top { background: var(--pacific); color: #fff; }
.top__row { display: flex; align-items: center; justify-content: space-between; gap: 12px; min-height: 56px; }
.brand { margin: 0; font-weight: 700; font-size: 1.15rem; }
.lang { display: flex; border: 1px solid rgba(255,255,255,.45); border-radius: 999px; overflow: hidden; }
.lang button {
  font: inherit; font-size: 0.85rem; color: #fff; background: transparent;
  border: 0; padding: 6px 12px; cursor: pointer; min-height: 36px;
}
.lang button[aria-pressed="true"] { background: #fff; color: var(--pacific); font-weight: 600; }

section { padding-top: 2.2rem; }

/* Live */
.live__body { display: grid; gap: 16px; }
.live__card { background: var(--paper); border-radius: var(--radius-lg); overflow: hidden; }
.live__img { position: relative; }
.live__img img { width: 100%; height: auto; aspect-ratio: 1.4; object-fit: cover; }
.live__text { padding: 16px; }
.verdict-line { font-size: clamp(1.35rem, 1.1rem + 1.4vw, 2rem); font-weight: 700; line-height: 1.2; margin: 0 0 6px; }
.verdict-line[data-v="wildfire_smoke"] { color: var(--ember); }
.verdict-line[data-v^="vog"] { color: var(--sulfur-ink); }
.verdict-line[data-v="no_plume"] { color: var(--lichen); }
.verdict-line[data-v="uncertain"], .verdict-line[data-v="cloud"] { color: var(--slate); }
.status-note { margin: 8px 0 0; padding: 10px 12px; border-left: 4px solid var(--slate); background: var(--haze); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.small { font-size: 0.875rem; color: var(--basalt-soft); }

/* Replays */
.replays__list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; }
.replay {
  display: grid; grid-template-columns: 112px 1fr; gap: 12px; align-items: center;
  width: 100%; text-align: left; font: inherit; color: inherit; cursor: pointer;
  background: var(--paper); border: 2px solid transparent; border-radius: var(--radius-lg);
  padding: 8px;
}
.replay[aria-current="true"] { border-color: var(--pacific); }
.replay img { width: 112px; height: 80px; object-fit: cover; border-radius: var(--radius-sm); }
.replay__title { font-weight: 600; display: block; line-height: 1.3; }
.pill { display: inline-block; margin-top: 4px; font-size: 0.8rem; padding: 2px 8px; border-radius: 999px; background: var(--haze-deep); }
.pill[data-v="wildfire_smoke"] { background: #F3D9D3; color: #7D2414; }
.pill[data-v^="vog"] { background: #F4E7B8; color: var(--sulfur-ink); }
.pill[data-v="uncertain"] { background: var(--haze-deep); color: #3E464E; }
.pill[data-v="no_plume"] { background: #D7E6DA; color: #2F4D36; }

/* Viewer: the one bold element — one image seen through six lenses */
.viewer { scroll-margin-top: 12px; }
.replay-banner {
  background: var(--replay); color: #fff; border-radius: var(--radius-sm);
  padding: 8px 12px; font-weight: 700; margin-bottom: 12px;
}
.steps {
  display: flex; gap: 6px; overflow-x: auto; padding: 4px 2px 10px; margin: 0 -2px;
  scroll-snap-type: x proximity;
}
.step {
  flex: 0 0 auto; scroll-snap-align: start; font: inherit; font-size: 0.9rem;
  display: flex; align-items: baseline; gap: 6px; cursor: pointer;
  background: var(--paper); color: var(--basalt); border: 1px solid var(--haze-deep);
  border-radius: 999px; padding: 7px 14px; min-height: 40px;
}
.step b { font-size: 1.05rem; color: var(--pacific); }
.step[aria-selected="true"] { background: var(--pacific); color: #fff; border-color: var(--pacific); }
.step[aria-selected="true"] b { color: var(--sulfur); }
.viewer__grid { display: grid; gap: 16px; }
.frame { margin: 0; background: var(--basalt); border-radius: var(--radius-lg); overflow: hidden; }
.frame img { width: 100%; height: auto; }
.replay img, .card-img { height: auto; }
.frame figcaption { color: #E9EDF0; font-size: 0.85rem; padding: 8px 12px; }
.dim { position: relative; aspect-ratio: 1.4; background: var(--basalt); }
.dim img { width: 100%; height: 100%; object-fit: cover; filter: brightness(0.38) saturate(0.6); }
.dim__msg {
  position: absolute; inset: 0; display: grid; place-content: center; justify-items: center;
  gap: 12px; padding: 20px; text-align: center; color: #fff;
}
.dim__msg p { margin: 0; max-width: 34ch; font-size: 1.05rem; line-height: 1.4; }
.btn {
  font: inherit; font-size: 0.95rem; font-weight: 600; cursor: pointer; min-height: 44px;
  padding: 8px 16px; border-radius: 999px; border: 2px solid var(--pacific);
  background: var(--pacific); color: #fff;
}
.btn--light { background: #fff; color: var(--pacific); border-color: #fff; }
.live__status {
  display: grid; grid-template-columns: auto 1fr; gap: 6px 10px; align-items: center;
  background: var(--paper); border-radius: var(--radius-lg); padding: 14px 16px;
}
.live__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--lichen); box-shadow: 0 0 0 4px #D7E6DA; }
.live__line { margin: 0; font-weight: 600; }
.live__status .btn { grid-column: 1 / -1; justify-self: start; }
.live__note { grid-column: 1 / -1; margin: 0; }
.explain h3 { margin-top: 0; }
.explain p { max-width: 62ch; }
.explain dl { display: grid; grid-template-columns: max-content 1fr; gap: 4px 12px; margin: 0 0 1rem; }
.explain dt { color: var(--basalt-soft); }
.explain dd { margin: 0; }
.explain ul { padding-left: 1.1rem; margin: 0 0 1rem; }
.explain li { margin-bottom: 4px; }
.plume { border-top: 1px solid var(--haze-deep); padding-top: 10px; margin-top: 10px; }
.conf { font-weight: 700; }
.table { width: 100%; border-collapse: collapse; font-size: 0.9rem; margin-bottom: 1rem; }
.table th, .table td { text-align: left; padding: 6px 8px 6px 0; border-bottom: 1px solid var(--haze-deep); vertical-align: top; }
.table th { color: var(--basalt-soft); font-weight: 600; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 12px; }
.tabs button {
  font: inherit; font-size: 0.85rem; cursor: pointer; border-radius: var(--radius-sm);
  border: 1px solid var(--haze-deep); background: var(--paper); padding: 6px 10px; min-height: 36px;
}
.tabs button[aria-selected="true"] { background: var(--basalt); color: #fff; border-color: var(--basalt); }
.flag { display: inline-block; font-size: 0.78rem; background: #F7E3A1; color: #4A3A00; border-radius: 4px; padding: 1px 6px; margin: 0 4px 4px 0; }
.card-img { border-radius: var(--radius-sm); margin-bottom: 10px; }
.src { font-size: 0.8rem; }

/* How it works */
.how__models { display: grid; gap: 10px; margin-bottom: 1.2rem; }
.model { background: var(--paper); border-radius: var(--radius-lg); padding: 12px 14px; }
.model strong { display: block; }

/* Footer */
.foot { margin-top: 3rem; background: var(--basalt); color: #E3E7EA; padding: 24px 0 36px; font-size: 0.9rem; }
.foot a { color: #fff; }
.foot__warn { font-weight: 700; color: #fff; font-size: 1rem; }

@media (min-width: 900px) {
  .live__card { display: grid; grid-template-columns: 3fr 2fr; }
  .live__status { grid-template-columns: auto 1fr auto; }
  .live__status .btn { grid-column: auto; }
  .live__img img { height: 100%; min-height: 100%; }
  .live__text { padding: 24px; align-self: center; }
  .replays__list { grid-template-columns: repeat(3, 1fr); }
  .replay { grid-template-columns: 1fr; }
  .replay img { width: 100%; height: 150px; }
  .viewer__grid { grid-template-columns: 3fr 2fr; align-items: start; }
  .frame { position: sticky; top: 12px; }
  .how__models { grid-template-columns: repeat(3, 1fr); }
}

@media (prefers-reduced-motion: no-preference) {
  .frame img { animation: lens 280ms ease-out; }
  @keyframes lens { from { opacity: 0.35; filter: saturate(0.4); } to { opacity: 1; filter: none; } }
}

.trace { padding-left: 0; list-style: none; margin: 0 0 1rem; }
.trace li { border-left: 3px solid var(--pacific); padding: 6px 0 6px 10px; margin-bottom: 6px; background: var(--paper); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.cite { display: inline-block; min-width: 2.2em; font-weight: 700; color: #fff; background: var(--pacific); border-radius: 4px; padding: 0 5px; text-align: center; }
.ok-note { padding: 8px 12px; border-left: 4px solid var(--lichen); background: #E3EEE5; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.guidance-h { margin: 12px 0 2px; font-size: 1rem; }
.guidance li { margin-bottom: 8px; }
.guidance .src { font-size: 0.82rem; color: var(--basalt-soft); }