:root {
  --blue: #0f6da8;
  --deep: #083c64;
  --gold: #f4b63f;
  --ink: #132238;
  --muted: #64748b;
  --line: #d8e4ee;
  --soft: #f4f8fb;
  --surface: #ffffff;
  --shadow: 0 18px 40px rgba(8, 60, 100, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Microsoft YaHei", "PingFang SC", "Noto Sans SC", Arial, sans-serif;
  color: var(--ink);
  background: var(--soft);
  line-height: 1.7;
}

a { color: inherit; text-decoration: none; }

.detail-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px clamp(18px, 4vw, 54px);
  background: rgba(255, 255, 255, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: white;
  font-weight: 800;
  background: linear-gradient(135deg, var(--blue), #45bfd3);
  border-radius: 8px;
}

.brand strong,
.brand small { display: block; }
.brand small, .eyebrow, .muted { color: var(--muted); }

.back-link,
.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: white;
  color: var(--deep);
  font-weight: 800;
}

.button.primary {
  border-color: transparent;
  background: var(--gold);
  color: #08243c;
}

.hero {
  padding: clamp(54px, 8vw, 96px) clamp(18px, 4vw, 54px);
  color: white;
  background:
    linear-gradient(110deg, rgba(5, 36, 69, 0.94), rgba(15, 109, 168, 0.78)),
    var(--hero-image, linear-gradient(135deg, #083c64, #45bfd3));
  background-size: cover;
  background-position: center;
}

.hero-inner {
  max-width: 1040px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0;
}

.hero .eyebrow,
.hero .muted { color: rgba(255,255,255,.82); }

h1, h2, h3, p { margin-top: 0; }
h1 {
  max-width: 820px;
  margin-bottom: 14px;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.05;
}
h2 { font-size: clamp(26px, 4vw, 42px); line-height: 1.16; }
h3 { margin-bottom: 8px; font-size: 20px; }

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.meta span {
  padding: 7px 12px;
  border: 1px solid rgba(255,255,255,.28);
  border-radius: 999px;
  background: rgba(255,255,255,.12);
}

.content {
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(42px, 7vw, 72px) clamp(18px, 4vw, 54px);
}

.lead-card,
.section-card {
  padding: clamp(22px, 4vw, 34px);
  margin-bottom: 22px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.fact {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbfd;
}

.fact span {
  display: block;
  color: var(--muted);
  font-size: 13px;
}

.fact strong {
  display: block;
  margin-top: 4px;
}

.timeline {
  display: grid;
  gap: 14px;
}

.timeline article {
  padding: 18px;
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  background: #f8fbfd;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.footer {
  padding: 28px clamp(18px, 4vw, 54px);
  color: rgba(255,255,255,.68);
  background: #06243d;
  text-align: center;
}

@media (max-width: 760px) {
  .detail-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .grid {
    grid-template-columns: 1fr;
  }

  .actions .button,
  .actions .back-link {
    width: 100%;
  }
}