:root {
  --ink: #1c2430;
  --muted: #5b6573;
  --line: #d7e0ea;
  --paper: #f4f7fb;
  --card: #ffffff;
  --blue: #1a73e8;
  --blue-deep: #0f5cc0;
  --green: #3aa77a;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, #d9ecff 0%, transparent 55%),
    radial-gradient(900px 420px at 110% 0%, #dff3ea 0%, transparent 50%),
    var(--paper);
  font: 16px/1.65 "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap { width: min(920px, calc(100% - 40px)); margin: 0 auto; }

header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: inherit;
  text-decoration: none;
  font-weight: 650;
  letter-spacing: 0.02em;
}
.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: 0 6px 16px rgba(26, 115, 232, 0.18);
}
nav { display: flex; gap: 18px; font-size: 14px; }

.hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 48px 44px;
  box-shadow: 0 20px 50px rgba(28, 36, 48, 0.06);
}
.hero h1 {
  margin: 0 0 10px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.lede { color: var(--muted); font-size: 18px; max-width: 38em; }
.pills { display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; list-style: none; }
.pills li {
  background: #eef5ff;
  color: var(--blue-deep);
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 22px 0 64px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 22px 22px 18px;
}
.card h2 { margin: 0 0 8px; font-size: 18px; }
.card p { margin: 0; color: var(--muted); }

.legal {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 40px 44px 48px;
  margin-bottom: 72px;
}
.legal h1 { margin: 0 0 6px; font-size: 34px; letter-spacing: -0.03em; }
.meta { color: var(--muted); font-size: 14px; margin-bottom: 28px; }
.legal h2 {
  margin: 28px 0 8px;
  font-size: 20px;
  padding-top: 8px;
  border-top: 1px solid var(--line);
}
.legal h2:first-of-type { border-top: 0; padding-top: 0; }
.legal p, .legal li { color: #2c3542; }
.legal ul { padding-left: 1.2em; }
.note {
  background: #eef5ff;
  border-radius: 14px;
  padding: 14px 16px;
  color: var(--blue-deep);
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 13px;
  padding: 0 0 40px;
}

@media (max-width: 720px) {
  .hero, .legal { padding: 28px 22px; border-radius: 18px; }
  .grid { grid-template-columns: 1fr; }
}