:root {
  --bg: #f3f6fb;
  --panel: #ffffff;
  --ink: #0f172a;
  --muted: #475569;
  --brand: #2d7da6;
  --brand-strong: #1f5f84;
  --line: #dbe4ef;
  --accent: #f59e0b;
  --radius: 16px;
  --shadow: 0 14px 34px rgba(18, 38, 63, 0.1);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(950px 380px at 12% -12%, rgba(45, 125, 166, 0.2), transparent 60%),
    radial-gradient(900px 340px at 94% -15%, rgba(31, 95, 132, 0.16), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: "Sora", "Noto Sans SC", ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  line-height: 1.65;
}

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

.wrap {
  max-width: 1120px;
  margin: 0 auto;
  padding: 28px 18px 46px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
}

.brand-word {
  letter-spacing: 0.2px;
}

.brand-word .cn {
  color: var(--brand);
}

.brand-word .en {
  color: #1e293b;
}

.top-links {
  display: flex;
  align-items: center;
  gap: 10px;
}

.top-link {
  border: 1px solid rgba(15, 23, 42, 0.15);
  border-radius: 999px;
  background: #fff;
  padding: 8px 12px;
  font-size: 12px;
  font-weight: 700;
}

.hero {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}

.meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(15, 23, 42, 0.16);
  font-size: 12px;
  font-weight: 800;
  color: #1e293b;
  background: rgba(245, 158, 11, 0.12);
}

.year {
  font-size: 12px;
  color: var(--muted);
  font-weight: 700;
}

h1 {
  margin: 10px 0 10px;
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.summary {
  margin: 0;
  color: var(--muted);
  max-width: 900px;
}

.metrics {
  margin-top: 18px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.metric {
  border: 1px solid var(--line);
  background: #f8fbff;
  border-radius: 12px;
  padding: 12px;
}

.metric .k {
  font-size: 12px;
  color: #5b6b7a;
  margin-bottom: 4px;
}

.metric .v {
  font-size: 18px;
  font-weight: 800;
  color: #153750;
}

.content {
  margin-top: 18px;
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 16px;
}

.source-block {
  margin-top: 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(18, 38, 63, 0.06);
  padding: 12px;
}

.source-block img {
  width: 100%;
  height: auto;
  border-radius: 10px;
  border: 1px solid #d4dfeb;
  display: block;
}

.source-block figcaption {
  margin-top: 8px;
  font-size: 12px;
  color: #607286;
}

.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(18, 38, 63, 0.06);
  padding: 18px;
}

.grid-two {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.kv {
  border: 1px solid #d7e3ef;
  background: #f8fbff;
  border-radius: 10px;
  padding: 10px;
}

.kv .k {
  font-size: 12px;
  color: #526579;
  margin-bottom: 4px;
}

.kv .v {
  font-size: 14px;
  color: #1a2f43;
  font-weight: 700;
}

.timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.timeline li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  color: #243446;
}

.timeline li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}

h2 {
  margin: 0 0 10px;
  font-size: 20px;
  letter-spacing: -0.01em;
}

ul {
  margin: 0;
  padding-left: 18px;
}

li + li {
  margin-top: 8px;
}

.note {
  margin-top: 16px;
  font-size: 12px;
  color: #5b6b7a;
  border-top: 1px dashed #c9d7e7;
  padding-top: 10px;
}

.footer-nav {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid rgba(15, 23, 42, 0.14);
  background: #fff;
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 700;
}

.footer-nav a.primary {
  border-color: transparent;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--brand-strong));
}

@media (max-width: 900px) {
  .hero {
    padding: 20px;
  }
  .metrics {
    grid-template-columns: 1fr;
  }
  .grid-two {
    grid-template-columns: 1fr;
  }
  .content {
    grid-template-columns: 1fr;
  }
}