:root {
  --ink: #121418;
  --muted: #4a5560;
  --blue: #1d4ed8;
  --red: #d92d3a;
  --teal: #0f766e;
  --paper: #ffffff;
  --wash: #f5f7fb;
  --line: rgba(18, 20, 24, 0.12);
  --font: "Source Sans 3", system-ui, -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  padding: 0;
  background: var(--wash);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.45;
}
a { color: var(--blue); }
code {
  font-size: 0.92em;
  background: #e8eefc;
  padding: 0.1em 0.35em;
  border-radius: 4px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 22px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 5;
}
.brand {
  display: flex;
  gap: 10px;
  align-items: center;
}
.brand strong { display: block; font-size: 15px; }
.brand span { display: block; font-size: 12px; color: var(--muted); }
.pdf-btn {
  display: inline-block;
  background: var(--blue);
  color: #fff !important;
  text-decoration: none;
  font-weight: 700;
  font-size: 13px;
  padding: 10px 14px;
  border-radius: 10px;
}

main { max-width: 920px; margin: 0 auto; padding: 28px 18px 64px; }

.hero {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px 24px;
  margin-bottom: 28px;
}
.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--red);
  font-weight: 700;
}
.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(2.25rem, 5.5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.lede {
  margin: 0 0 16px;
  color: var(--muted);
  max-width: 62ch;
  font-size: 1.05rem;
}
.meta {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 6px;
  font-size: 14px;
}

.posts { display: grid; gap: 22px; }
.post {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}
.post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 8px;
}
.ch {
  font-weight: 800;
  font-size: 13px;
  color: var(--blue);
}
.when {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 999px;
}
.when.aquecer { background: #ecfdf5; color: var(--teal); }
.when.pre { background: #eff6ff; color: var(--blue); }
.when.pico { background: #fef2f2; color: var(--red); }
.ch-plat {
  font-size: 12px;
  color: var(--muted);
  margin-left: auto;
}
.post h2 {
  margin: 0 0 14px;
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
}
figure {
  margin: 0 0 14px;
}
figure img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
  border: 1px solid var(--line);
  display: block;
}
figure.story img { max-width: 280px; }
figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: var(--muted);
}
.caption {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  background: var(--wash);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 13px;
  line-height: 1.5;
}
.wa-label {
  margin: 14px 0 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--teal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.caption.wa { border-color: rgba(15, 118, 110, 0.25); }

.pdf-block {
  margin-top: 32px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 20px;
}
.pdf-block h2 {
  margin: 0 0 8px;
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  line-height: 1.2;
}
.pdf-block iframe {
  width: 100%;
  height: 720px;
  border: 1px solid var(--line);
  border-radius: 10px;
  margin: 12px 0;
  background: #ddd;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 12px;
  color: var(--muted);
}

@media (max-width: 640px) {
  .ch-plat { margin-left: 0; }
  .pdf-block iframe { height: 420px; }
}