:root {
  --bg: #160608;
  --panel: #23090c;
  --panel-strong: #310d12;
  --text: #fff7f1;
  --muted: #e5b8ad;
  --line: #73323b;
  --line-soft: rgba(255, 245, 240, 0.16);
  --accent: #f4b46f;
  --accent-2: #ffd18d;
  --good: #6ee39f;
  font-family: "Segoe UI", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(135deg, rgba(91, 18, 26, 0.48), transparent 34%),
    var(--bg);
}

.app {
  width: min(100% - 32px, 1120px);
  margin: 0 auto;
  padding: 28px 0;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  gap: 20px;
  align-items: stretch;
}

.title-block,
.start-panel,
.part-block,
.source-note {
  border: 1px solid var(--line-soft);
  border-radius: 8px;
  background: rgba(35, 9, 12, 0.88);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
}

.title-block {
  padding: 30px;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent-2);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  max-width: 780px;
  margin-bottom: 16px;
  font-size: clamp(2.35rem, 5vw, 4.9rem);
  line-height: 0.98;
  letter-spacing: 0;
}

.lede {
  max-width: 760px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.55;
}

.start-panel {
  display: grid;
  align-content: center;
  gap: 16px;
  padding: 24px;
}

.start-panel p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.5;
}

.tag {
  display: inline-flex;
  width: fit-content;
  min-height: 28px;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0 12px;
  color: var(--accent-2);
  background: rgba(255, 245, 240, 0.06);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.primary-btn {
  display: inline-flex;
  min-height: 44px;
  width: fit-content;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 6px;
  padding: 0 20px;
  color: #21070a;
  background: linear-gradient(180deg, var(--accent-2), var(--accent));
  font-weight: 900;
  text-decoration: none;
}

.primary-btn:hover {
  filter: brightness(1.05);
}

.overview {
  display: grid;
  gap: 14px;
  margin-top: 20px;
}

.part-block {
  display: grid;
  grid-template-columns: 112px 1fr;
  gap: 20px;
  align-items: start;
  padding: 22px;
}

.part-number {
  display: grid;
  min-height: 68px;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--good);
  background: rgba(255, 245, 240, 0.06);
  font-weight: 900;
}

.part-block h2 {
  margin-bottom: 8px;
  font-size: 1.25rem;
}

.part-block p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.source-note {
  margin-top: 20px;
  padding: 14px 16px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.source-note a {
  color: var(--accent-2);
  font-weight: 800;
  text-decoration: none;
}

.source-note a:hover {
  text-decoration: underline;
}

@media (max-width: 760px) {
  .app {
    width: min(100% - 20px, 1120px);
    padding-top: 10px;
  }

  .hero,
  .part-block {
    grid-template-columns: 1fr;
  }

  .title-block,
  .start-panel,
  .part-block {
    padding: 18px;
  }

  .primary-btn {
    width: 100%;
  }
}