* {
  box-sizing: border-box;
}

:root {
  color-scheme: light;
  --bg: #f6f3fb;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-border: rgba(125, 89, 184, 0.12);
  --text: #231b2f;
  --muted: #6a5e7f;
  --accent: #7c4dff;
  --accent-soft: rgba(124, 77, 255, 0.08);
  --shadow: 0 20px 60px rgba(41, 27, 71, 0.12);
}

html {
  font-size: 16px;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(156, 72, 234, 0.14), transparent 30%),
    radial-gradient(circle at top right, rgba(198, 139, 255, 0.18), transparent 28%),
    linear-gradient(180deg, #faf8fe 0%, #f3effa 100%);
  line-height: 1.72;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.page {
  width: min(920px, calc(100vw - 32px));
  margin: 40px auto 72px;
}

.hero {
  padding: 28px 30px 20px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.88rem;
  font-weight: 600;
}

.hero h1 {
  margin: 18px 0 12px;
  font-size: clamp(2rem, 4vw, 3rem);
  line-height: 1.1;
}

.hero p {
  margin: 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 1.02rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.meta-item {
  padding: 10px 14px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.94rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-radius: 28px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.content {
  padding: 10px 30px 30px;
}

.toc {
  margin: 8px 0 24px;
  padding: 18px 20px;
  border-radius: 20px;
  background: rgba(124, 77, 255, 0.05);
}

.toc-title {
  margin: 0 0 12px;
  font-size: 0.92rem;
  color: var(--muted);
  font-weight: 700;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.toc ol {
  margin: 0;
  padding-left: 20px;
}

.toc li + li {
  margin-top: 6px;
}

section {
  padding-top: 8px;
}

section + section {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(125, 89, 184, 0.12);
}

h2 {
  margin: 0 0 12px;
  font-size: 1.34rem;
  line-height: 1.3;
}

h3 {
  margin: 18px 0 10px;
  font-size: 1.04rem;
  line-height: 1.35;
}

p {
  margin: 0 0 12px;
}

ul,
ol {
  margin: 0 0 14px;
  padding-left: 22px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 14px;
  overflow: hidden;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.78);
}

th,
td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid rgba(125, 89, 184, 0.12);
}

th {
  background: rgba(124, 77, 255, 0.08);
  font-weight: 700;
}

tr:last-child td {
  border-bottom: none;
}

.note {
  padding: 16px 18px;
  border-radius: 18px;
  background: rgba(124, 77, 255, 0.06);
  color: var(--text);
}

.footer {
  margin-top: 26px;
  color: var(--muted);
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  .page {
    width: min(100vw - 18px, 920px);
    margin: 12px auto 28px;
  }

  .hero,
  .content {
    padding-left: 18px;
    padding-right: 18px;
  }

  .card {
    border-radius: 22px;
  }

  table,
  thead,
  tbody,
  th,
  td,
  tr {
    display: block;
  }

  thead {
    display: none;
  }

  tr {
    padding: 10px 0;
    border-bottom: 1px solid rgba(125, 89, 184, 0.12);
  }

  td {
    padding: 8px 0;
    border-bottom: none;
  }
}