:root {
  color-scheme: light;
  --blue: #2675e8;
  --indigo: #6259dc;
  --ink: #17213a;
  --muted: #64708a;
  --line: rgba(52, 86, 165, 0.14);
  --surface: rgba(255, 255, 255, 0.9);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  background:
    radial-gradient(circle at 10% 4%, rgba(65, 178, 255, 0.23), transparent 34rem),
    radial-gradient(circle at 90% 20%, rgba(130, 96, 255, 0.2), transparent 32rem),
    #f1f6ff;
  line-height: 1.75;
}

a { color: var(--blue); }

.shell {
  width: min(920px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.brand img {
  width: 58px;
  height: 58px;
  border-radius: 14px;
  box-shadow: 0 10px 26px rgba(26, 95, 220, 0.22);
}

.brand strong { display: block; font-size: 1.4rem; }
.brand span { color: var(--muted); font-size: 0.92rem; }

.hero, .card {
  border: 1px solid var(--line);
  border-radius: 26px;
  background: var(--surface);
  box-shadow: 0 18px 50px rgba(44, 73, 135, 0.09);
}

.hero {
  padding: clamp(28px, 6vw, 54px);
  background: linear-gradient(135deg, rgba(31, 137, 239, 0.98), rgba(91, 74, 218, 0.96));
  color: white;
}

.hero h1 { margin: 0 0 12px; font-size: clamp(2rem, 7vw, 3.6rem); line-height: 1.18; }
.hero p { margin: 0; max-width: 680px; color: rgba(255,255,255,0.86); font-size: 1.06rem; }

.cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin: 22px 0;
}

.card { padding: clamp(22px, 4vw, 34px); }
.card h2, .card h3 { margin-top: 0; line-height: 1.35; }
.card p:last-child, .card ul:last-child { margin-bottom: 0; }
.card .eyebrow { color: var(--blue); font-weight: 700; letter-spacing: 0.04em; }

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  margin-top: 10px;
  padding: 0 20px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--blue), var(--indigo));
  color: white;
  font-weight: 700;
  text-decoration: none;
}

.document { margin-top: 22px; padding: clamp(24px, 6vw, 54px); }
.document h1 { margin-top: 0; line-height: 1.25; }
.document h2 { margin-top: 2.2rem; font-size: 1.25rem; }
.document .date { color: var(--muted); }
.document li + li { margin-top: 0.5rem; }

footer {
  padding: 24px 4px 0;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

footer a { color: inherit; margin: 0 8px; }

@media (max-width: 660px) {
  .shell { width: min(100% - 22px, 920px); padding-top: 18px; }
  .cards { grid-template-columns: 1fr; }
  .hero, .card { border-radius: 22px; }
}