/* 平台规则页：长文阅读版式（协议、政策、业务说明） */

.rules-layout {
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 26px;
  align-items: start;
  padding: 6px 0 40px;
}

/* ---------------- 左侧导航 ---------------- */
.rules-nav {
  position: sticky;
  top: 16px;
  padding: 14px 12px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
}
.rules-nav__title {
  padding: 10px 8px 6px;
  font-size: 12px;
  color: var(--ink-400);
  letter-spacing: .5px;
}
.rules-nav__title:first-child { padding-top: 2px; }
.rules-nav a {
  display: block;
  padding: 7px 10px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--ink-700);
}
.rules-nav a:hover { background: #F4FAFE; color: var(--brand-700); text-decoration: none; }
.rules-nav a.active {
  background: var(--brand-50, #EEF7FF);
  color: var(--brand-700);
  font-weight: 600;
}

/* ---------------- 正文 ---------------- */
.rules-body {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 30px 38px 34px;
  min-height: 420px;
}
.rules-body h1 {
  margin: 0 0 8px;
  font-size: 26px;
  line-height: 1.35;
  color: var(--ink-900);
}
.rules-meta {
  margin: 0 0 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--ink-400);
}
.rules-body h2 {
  margin: 28px 0 10px;
  font-size: 17px;
  color: var(--ink-900);
}
.rules-body h3 {
  margin: 20px 0 8px;
  font-size: 14.5px;
  color: var(--ink-900);
}
.rules-body p,
.rules-body li {
  font-size: 14px;
  line-height: 1.95;
  color: var(--ink-700);
}
.rules-body p { margin: 0 0 10px; }
.rules-body ul,
.rules-body ol { margin: 0 0 12px; padding-left: 22px; }
.rules-body li { margin-bottom: 4px; }
.rules-body strong { color: var(--ink-900); }
.rules-body a { color: var(--brand-700); }

.rules-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 10px 0 18px;
  font-size: 13.5px;
}
.rules-body th,
.rules-body td {
  padding: 9px 12px;
  border: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  line-height: 1.7;
}
.rules-body th { background: #F7FAFC; color: var(--ink-700); font-weight: 600; }

.rules-note {
  margin: 16px 0;
  padding: 12px 14px;
  background: #F7FBFF;
  border-left: 3px solid var(--brand);
  border-radius: 4px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-600, #475569);
}

.rules-foot {
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  color: var(--ink-400);
  line-height: 1.8;
}

/* ---------------- 规则总览卡片 ---------------- */
.rules-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.rules-card {
  display: block;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #FCFEFF;
  color: inherit;
  transition: border-color .15s, box-shadow .15s;
}
.rules-card:hover {
  border-color: var(--brand-200);
  box-shadow: 0 6px 18px rgba(16, 90, 130, .08);
  text-decoration: none;
}
.rules-card b { display: block; font-size: 14.5px; color: var(--ink-900); margin-bottom: 4px; }
.rules-card span { font-size: 12.5px; color: var(--ink-500); line-height: 1.7; }

@media (max-width: 900px) {
  .rules-layout { grid-template-columns: 1fr; }
  .rules-nav { position: static; }
  .rules-body { padding: 22px 18px; }
  .rules-cards { grid-template-columns: 1fr; }
}