/* 店铺规则中心：统一承载交易、卖家、交付、售后、禁售与平台服务边界 */
.shop-rules-page {
  --rule-accent: #5b5ef5;
  --rule-teal: #0f8b8d;
  --rule-amber: #b76a13;
  --rule-red: #c2413b;
}

.shop-rules-page main {
  padding-bottom: 72px;
}

.rules-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, .55fr);
  gap: 38px;
  align-items: end;
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--border);
}

.rules-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  color: var(--rule-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0;
}

.rules-eyebrow::before {
  content: "";
  width: 24px;
  height: 3px;
  border-radius: 2px;
  background: var(--rule-accent);
}

.rules-hero h1 {
  margin: 0;
  color: var(--text);
  font-size: 46px;
  line-height: 1.15;
  letter-spacing: 0;
}

.rules-hero-lead {
  max-width: 720px;
  margin: 16px 0 0;
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.9;
}

.rules-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.rules-btn {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color .15s, color .15s, background .15s;
}

.rules-btn:hover {
  border-color: var(--rule-accent);
  color: var(--rule-accent);
}

.rules-btn-primary {
  border-color: var(--rule-accent);
  background: var(--rule-accent);
  color: #fff;
}

.rules-btn-primary:hover {
  background: color-mix(in srgb, var(--rule-accent) 88%, #000);
  color: #fff;
}

.rules-status {
  padding: 0 0 0 26px;
  border-left: 1px solid var(--border);
}

.rules-status-title {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 13px;
  font-weight: 700;
}

.rules-status-list {
  display: grid;
  gap: 13px;
  margin: 0;
}

.rules-status-row {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.rules-status-row dt {
  color: var(--text-muted);
  font-size: 12px;
}

.rules-status-row dd {
  margin: 0;
  color: var(--text);
  font-size: 12.5px;
  font-weight: 600;
  line-height: 1.6;
}

.rules-quickfacts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 28px 0 38px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  overflow: hidden;
}

.rules-fact {
  min-width: 0;
  padding: 16px 18px;
  border-right: 1px solid var(--border);
}

.rules-fact:last-child {
  border-right: 0;
}

.rules-fact strong {
  display: block;
  margin-bottom: 4px;
  color: var(--text);
  font-size: 13px;
}

.rules-fact span {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.65;
}

.rules-layout {
  display: grid;
  grid-template-columns: 238px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}

.rules-sidebar {
  position: sticky;
  top: 84px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  overflow: hidden;
}

.rules-sidebar-head {
  padding: 15px 16px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
  font-size: 12px;
  font-weight: 700;
}

.rules-nav {
  display: grid;
  padding: 6px;
}

.rules-nav a {
  display: flex;
  gap: 9px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text-muted);
  font-size: 12.5px;
  line-height: 1.45;
  text-decoration: none;
}

.rules-nav a::before {
  content: "";
  width: 5px;
  height: 5px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--border);
}

.rules-nav a:hover,
.rules-nav a[aria-current="true"] {
  background: var(--surface-2);
  color: var(--text);
}

.rules-nav a[aria-current="true"]::before {
  background: var(--rule-accent);
}

.rules-side-help {
  padding: 14px 16px 16px;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.rules-side-help p {
  margin: 0 0 10px;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.65;
}

.rules-side-help a {
  color: var(--rule-accent);
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
}

.rules-content {
  min-width: 0;
}

.rules-intro {
  margin: 0 0 30px;
  padding: 18px 20px;
  border-left: 4px solid var(--rule-accent);
  background: var(--surface-2);
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.85;
}

.rules-intro strong {
  color: var(--text);
}

.rule-section {
  scroll-margin-top: 82px;
  padding: 2px 0 34px;
  border-bottom: 1px solid var(--border);
}

.rule-section + .rule-section {
  padding-top: 34px;
}

.rule-section:last-of-type {
  border-bottom: 0;
}

.rule-section-head {
  display: grid;
  grid-template-columns: 38px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  margin-bottom: 16px;
}

.rule-section-no {
  display: inline-flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  border: 1px solid color-mix(in srgb, var(--rule-accent) 28%, var(--border));
  border-radius: 50%;
  color: var(--rule-accent);
  font-size: 12px;
  font-weight: 700;
}

.rule-section h2 {
  margin: 3px 0 0;
  color: var(--text);
  font-size: 21px;
  line-height: 1.35;
  letter-spacing: 0;
}

.rule-section h3 {
  margin: 24px 0 10px;
  color: var(--text);
  font-size: 15px;
  line-height: 1.5;
}

.rule-section p,
.rule-section li {
  color: var(--text-muted);
  font-size: 13.5px;
  line-height: 1.88;
}

.rule-section p {
  margin: 0 0 12px;
}

.rule-section ul,
.rule-section ol {
  margin: 8px 0 14px;
  padding-left: 21px;
}

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

.rule-section strong {
  color: var(--text);
  font-weight: 650;
}

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

.rule-section a:hover {
  text-decoration: underline;
}

.rule-callout {
  margin: 18px 0;
  padding: 15px 17px;
  border: 1px solid var(--border);
  border-left: 4px solid var(--rule-teal);
  border-radius: 0 8px 8px 0;
  background: var(--surface);
}

.rule-callout.warn {
  border-left-color: var(--rule-amber);
}

.rule-callout.danger {
  border-left-color: var(--rule-red);
}

.rule-callout strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
}

.rule-callout p:last-child {
  margin-bottom: 0;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0 20px;
}

.service-item {
  padding: 13px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}

.service-item strong {
  display: block;
  margin-bottom: 4px;
  font-size: 13px;
}

.service-item span {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.65;
}

.rule-matrix {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 18px 0 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  overflow: hidden;
}

.rule-matrix > div {
  min-width: 0;
  padding: 15px 16px;
  border-right: 1px solid var(--border);
}

.rule-matrix > div:last-child {
  border-right: 0;
}

.rule-matrix strong {
  display: block;
  margin-bottom: 5px;
  font-size: 13px;
}

.rule-matrix span {
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.7;
}

.rule-steps {
  display: grid;
  gap: 0;
  margin: 18px 0 20px;
  padding: 0;
  list-style: none;
  counter-reset: rule-step;
}

.rule-steps li {
  position: relative;
  min-height: 54px;
  padding: 0 0 18px 46px;
  counter-increment: rule-step;
}

.rule-steps li::before {
  content: counter(rule-step);
  position: absolute;
  top: 0;
  left: 0;
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--surface-2);
  color: var(--rule-accent);
  font-size: 12px;
  font-weight: 700;
}

.rule-steps li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 34px;
  bottom: 4px;
  left: 14px;
  width: 1px;
  background: var(--border);
}

.rule-steps strong {
  display: block;
  margin-bottom: 2px;
}

.rule-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.rule-links a {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 6px 11px;
  border: 1px solid var(--border);
  border-radius: 7px;
  background: var(--surface);
  color: var(--text);
  font-size: 12.5px;
  font-weight: 600;
}

.rule-links a:hover {
  border-color: var(--rule-accent);
  color: var(--rule-accent);
  text-decoration: none;
}

.rule-footnote {
  margin-top: 20px;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface-2);
}

.rule-footnote p:last-child {
  margin-bottom: 0;
}

.rules-backtop {
  display: inline-flex;
  margin-top: 16px;
  color: var(--text-muted);
  font-size: 12px;
  text-decoration: none;
}

.rules-backtop:hover {
  color: var(--rule-accent);
}

@media (max-width: 920px) {
  .rules-hero {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .rules-status {
    padding: 20px 0 0;
    border-top: 1px solid var(--border);
    border-left: 0;
  }

  .rules-status-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rules-quickfacts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .rules-fact:nth-child(2) {
    border-right: 0;
  }

  .rules-fact:nth-child(-n+2) {
    border-bottom: 1px solid var(--border);
  }

  .rules-layout {
    grid-template-columns: 1fr;
  }

  .rules-sidebar {
    position: static;
  }

  .rules-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 640px) {
  .shop-rules-page main {
    padding-bottom: 48px;
  }

  .rules-hero {
    padding-top: 36px;
  }

  .rules-hero h1 {
    font-size: 34px;
  }

  .rules-hero-lead {
    font-size: 14px;
  }

  .rules-status-list,
  .rules-quickfacts,
  .service-grid,
  .rule-matrix,
  .rules-nav {
    grid-template-columns: 1fr;
  }

  .rules-status-row {
    grid-template-columns: 82px minmax(0, 1fr);
  }

  .rules-fact,
  .rules-fact:nth-child(2),
  .rules-fact:nth-child(-n+2),
  .rule-matrix > div {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .rules-fact:last-child,
  .rule-matrix > div:last-child {
    border-bottom: 0;
  }

  .rule-section-head {
    grid-template-columns: 32px minmax(0, 1fr);
    gap: 10px;
  }

  .rule-section-no {
    width: 29px;
    height: 29px;
    font-size: 11px;
  }

  .rule-section h2 {
    font-size: 19px;
  }

  .rules-nav a {
    padding: 7px 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .rules-btn,
  .rules-nav a,
  .rule-links a {
    transition: none;
  }
}