/*!
 * @file legal-document.css
 * @description 法律文档静态页面的统一样式表。
 * @architecture 供 public 根目录下的用户协议、隐私政策、会员协议、充值协议共同复用，
 * 在保证应用商店可抓取的前提下，统一文档层级、排版、表格与移动端阅读体验。
 */

:root {
  color-scheme: light;
  --doc-bg: #f4f7fb;
  --doc-surface: rgba(255, 255, 255, 0.92);
  --doc-surface-strong: #ffffff;
  --doc-text: #111827;
  --doc-muted: #4b5563;
  --doc-line: #d8e0f0;
  --doc-brand: #4f46e5;
  --doc-brand-soft: rgba(79, 70, 229, 0.1);
  --doc-shadow: 0 24px 64px rgba(15, 23, 42, 0.08);
  --doc-radius-xl: 28px;
  --doc-radius-lg: 22px;
  --doc-radius-md: 16px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  line-height: 1.85;
  color: var(--doc-text);
  background:
    radial-gradient(circle at top left, rgba(79, 70, 229, 0.08), transparent 30%),
    radial-gradient(circle at top right, rgba(99, 102, 241, 0.06), transparent 28%),
    var(--doc-bg);
}

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

a:hover {
  text-decoration: underline;
}

.page {
  width: min(100%, 980px);
  margin: 0 auto;
  padding: 32px 18px 64px;
}

.hero {
  padding: 32px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: var(--doc-radius-xl);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.98) 0%, rgba(247, 249, 255, 0.96) 100%);
  box-shadow: var(--doc-shadow);
  backdrop-filter: blur(18px);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--doc-brand-soft);
  color: var(--doc-brand);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
}

.hero h1 {
  margin: 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.18;
}

.hero p {
  margin: 14px 0 0;
  color: var(--doc-muted);
}

.meta-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.meta-item {
  padding: 9px 14px;
  border: 1px solid var(--doc-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.9);
  color: var(--doc-muted);
  font-size: 14px;
}

.notice {
  margin-top: 18px;
  padding: 16px 18px;
  border: 1px solid rgba(79, 70, 229, 0.16);
  border-radius: var(--doc-radius-md);
  background: linear-gradient(180deg, rgba(79, 70, 229, 0.08) 0%, rgba(79, 70, 229, 0.03) 100%);
  color: #312e81;
}

.section {
  margin-top: 18px;
  padding: 26px 28px;
  border: 1px solid rgba(216, 224, 240, 0.9);
  border-radius: var(--doc-radius-lg);
  background: var(--doc-surface);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
}

.section h2 {
  margin: 0 0 16px;
  font-size: 22px;
  line-height: 1.35;
  color: var(--doc-brand);
}

.section h3 {
  margin: 22px 0 10px;
  font-size: 17px;
  line-height: 1.5;
}

.section p {
  margin: 10px 0;
}

.section ul,
.section ol {
  margin: 12px 0;
  padding-left: 22px;
}

.section li {
  margin: 8px 0;
}

.lead {
  color: var(--doc-muted);
}

.callout {
  margin: 16px 0;
  padding: 14px 16px;
  border-left: 4px solid var(--doc-brand);
  border-radius: 0 var(--doc-radius-md) var(--doc-radius-md) 0;
  background: rgba(79, 70, 229, 0.06);
}

.table-wrap {
  margin-top: 16px;
  overflow-x: auto;
  border: 1px solid var(--doc-line);
  border-radius: 18px;
  background: var(--doc-surface-strong);
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 720px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--doc-line);
  text-align: left;
  vertical-align: top;
  word-break: break-word;
}

th {
  background: rgba(79, 70, 229, 0.06);
  color: var(--doc-text);
  font-size: 14px;
  font-weight: 700;
}

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

.compact-table td:first-child,
.compact-table th:first-child {
  width: 72px;
}

.compact-table td:nth-child(2),
.compact-table th:nth-child(2) {
  width: 220px;
}

.sdk-wrap {
  margin-top: 18px;
}

/* SDK 附录改为正式文档流，避免重卡片干扰法律文本阅读。 */
.sdk-summary {
  margin-top: 12px;
  color: var(--doc-muted);
}

.sdk-records {
  margin: 18px 0 0;
  padding-left: 24px;
}

.sdk-record {
  padding-left: 8px;
}

.sdk-record + .sdk-record {
  margin-top: 22px;
  padding-top: 24px;
  border-top: 1px solid rgba(216, 224, 240, 0.9);
}

.sdk-record::marker {
  color: var(--doc-brand);
  font-weight: 700;
}

.sdk-record__title {
  margin: 0 0 12px;
  color: var(--doc-text);
  font-size: 20px;
  line-height: 1.45;
}

.sdk-record__meta {
  margin: 0;
}

.sdk-record__row {
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 10px 20px;
  padding: 10px 0;
  border-top: 1px solid rgba(216, 224, 240, 0.7);
}

.sdk-record__row:first-child {
  padding-top: 0;
  border-top: none;
}

.sdk-record__row dt {
  color: var(--doc-brand);
  font-size: 14px;
  font-weight: 700;
}

.sdk-record__row dd {
  min-width: 0;
  margin: 0;
  color: var(--doc-text);
  line-height: 1.85;
  word-break: break-word;
}

.sdk-record__link {
  color: var(--doc-brand);
  word-break: break-all;
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.sdk-record__link:hover {
  color: #3730a3;
}

.footer-note {
  margin-top: 18px;
  padding: 20px 22px;
  border: 1px dashed var(--doc-line);
  border-radius: var(--doc-radius-md);
  color: var(--doc-muted);
  background: rgba(255, 255, 255, 0.66);
}

.signature {
  margin-top: 28px;
  color: var(--doc-muted);
  text-align: right;
}

.toc {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px 14px;
  margin-top: 18px;
}

.toc a {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--doc-line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.85);
  color: var(--doc-text);
  font-size: 14px;
}

.toc a:hover {
  text-decoration: none;
  border-color: rgba(79, 70, 229, 0.4);
  background: rgba(79, 70, 229, 0.06);
}

.muted {
  color: var(--doc-muted);
}

strong {
  color: #111827;
}

@media (max-width: 768px) {
  .page {
    padding: 18px 12px 40px;
  }

  .hero,
  .section {
    padding: 20px 18px;
    border-radius: 20px;
  }

  .meta-list {
    flex-direction: column;
  }

  .meta-item {
    width: 100%;
  }

  th,
  td {
    padding: 12px 12px;
    font-size: 14px;
  }

  .sdk-records {
    padding-left: 20px;
  }

  .sdk-record {
    padding-left: 4px;
  }

  .sdk-record__title {
    font-size: 18px;
  }

  .sdk-record__row {
    grid-template-columns: 1fr;
    gap: 6px;
    padding: 12px 0;
  }

  .sdk-record__row dt {
    font-size: 13px;
  }

  .sdk-record__link {
    word-break: break-word;
  }
}