/* Compliance Hub — 旧页导航/页脚对齐样式（shell）
   用途：把仍在服务器上的旧页面（规则广场、Skill 工坊、账户类等）的头部与页脚
        换成新站的导航与页脚，同时不动旧页原有的内容样式。
   做法：所有规则限定在 .site-header / .site-footer 之内，避免与旧站 CSS 里
        同名的 .nav-dd / .btn / .tag 等规则互相污染。
   引入：只在这些旧页里 link 本文件，且放在旧样式之后。 */

:root {
  --paper: #fbfaf7;
  --surface: #ffffff;
  --tint: #f3f1ea;
  --ink: #101a24;
  --ink-2: #3a4753;
  --ink-3: #616c79;
  --line: #e4e1d8;
  --line-2: #d2cec2;
  --accent: #0f6c82;
  --accent-2: #0a4c5c;
  --ok: #0f7539;
  --warn: #a9540c;
  --bad: #a3271f;
  --r-sm: 4px;
  --r: 6px;
  --r-lg: 8px;
  --shadow: 0 1px 2px rgba(18, 22, 27, 0.04), 0 8px 24px -16px rgba(18, 22, 27, 0.18);
  --maxw: 1180px;
}

/* ---------- 页头 ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--ink);
}

.site-header *,
.site-footer * {
  box-sizing: border-box;
}

.site-header .wrap,
.site-footer .wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 28px;
}

.site-header .i {
  flex: none;
}

.site-header .header-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  height: 68px;
}

.site-header .brand {
  display: inline-flex;
  align-items: center;
  color: var(--ink);
  flex: none;
  text-decoration: none;
}

.site-header .brand-logo,
.site-footer .brand-logo {
  display: block;
  height: 40px;
  width: auto;
}

.site-footer .brand-logo {
  height: 38px;
}

.site-header .site-nav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 12px;
}

.site-header .nav-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 11px;
  border-radius: var(--r-sm);
  font-size: 0.9375rem;
  color: var(--ink-2);
  text-decoration: none;
}

.site-header .nav-link:hover {
  background: #efece4;
  color: var(--ink);
}

.site-header .nav-link.is-active {
  color: var(--accent);
  font-weight: 600;
}

.site-header .nav-link--mobile-cta {
  display: none;
}

.site-header .header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
}

.site-header .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border-radius: var(--r);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  transition: background 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.site-header .btn--sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

.site-header .btn--primary {
  background: var(--accent);
  color: #fff;
}

.site-header .btn--primary:hover {
  background: var(--accent-2);
  color: #fff;
}

.site-header .nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line-2);
  background: var(--surface);
  border-radius: var(--r);
  color: var(--ink);
  cursor: pointer;
}

.site-header .nav-toggle-close {
  display: none;
}

.site-header.is-open .nav-toggle-open {
  display: none;
}

.site-header.is-open .nav-toggle-close {
  display: block;
}

.site-header .nav-dd {
  position: relative;
  display: inline-flex;
}

.site-header .nav-dd-btn {
  border: 0;
  background: transparent;
  font: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.site-header .nav-dd-btn .i {
  color: var(--ink-3);
  transition: transform 0.18s ease;
}

.site-header .nav-dd:hover .nav-dd-btn .i,
.site-header .nav-dd.is-open .nav-dd-btn .i {
  transform: rotate(180deg);
}

.site-header .nav-dd-panel {
  position: absolute;
  top: calc(100% + 10px);
  left: -8px;
  min-width: 264px;
  display: grid;
  gap: 2px;
  padding: 8px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
  z-index: 120;
}

.site-header .nav-dd:hover .nav-dd-panel,
.site-header .nav-dd:focus-within .nav-dd-panel,
.site-header .nav-dd.is-open .nav-dd-panel {
  opacity: 1;
  visibility: visible;
  transform: none;
}

.site-header .nav-dd-item {
  display: grid;
  gap: 2px;
  padding: 10px 12px;
  border-radius: var(--r);
  color: var(--ink);
  text-decoration: none;
}

.site-header .nav-dd-item:hover {
  background: var(--tint);
  color: var(--ink);
}

.site-header .nav-dd-item span {
  font-size: 0.9375rem;
  font-weight: 500;
}

.site-header .nav-dd-item small {
  font-size: 0.8125rem;
  color: var(--ink-3);
  line-height: 1.5;
}

/* ---------- 页脚 ---------- */

.site-footer {
  background: var(--tint);
  border-top: 1px solid var(--line);
  padding: 64px 0 28px;
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  line-height: 1.6;
  color: var(--ink);
}

.site-footer .footer-inner {
  display: grid;
  grid-template-columns: minmax(240px, 1.2fr) 2.6fr;
  gap: 48px;
  padding-bottom: 40px;
}

.site-footer .footer-brand p {
  margin: 16px 0 0;
  color: var(--ink-3);
  font-size: 0.9375rem;
  max-width: 30ch;
}

.site-footer .footer-mail a {
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
}

.site-footer .footer-cols {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.site-footer .footer-col h3 {
  font-size: 0.875rem;
  color: var(--ink);
  margin: 0 0 14px;
}

.site-footer .footer-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-footer .footer-col li + li {
  margin-top: 9px;
}

.site-footer .footer-col a {
  font-size: 0.9375rem;
  color: var(--ink-2);
  text-decoration: none;
}

.site-footer .footer-col a:hover {
  color: var(--accent);
}

.site-footer .footer-legal {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  color: var(--ink-3);
  font-size: 0.8125rem;
}

.site-footer .footer-legal p {
  margin: 0;
}

.site-footer .footer-legal a {
  color: inherit;
  text-decoration: none;
}

.site-footer .footer-legal a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.site-footer .footer-beian {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.site-footer .beian-icon {
  display: inline-block;
  vertical-align: -3px;
  margin-right: 5px;
}

.site-footer .footer-beian .sep {
  opacity: 0.55;
}

/* ---------- 小屏 ---------- */

/* 旧页正文与站内导航落在同一条垂直网格上（新站栅格：1180 / 28） */
.ch-legacy {
  /* 把旧页自己的配色变量映射到新站色板，避免蓝紫配色与新站青蓝并存 */
  --c-bg: var(--paper);
  --c-surface: #ffffff;
  --c-text: var(--ink);
  --c-text-muted: var(--ink-3);
  --c-border: var(--line);
  --c-primary: var(--accent);
  --c-primary-light: #2f8ba1;
  --c-accent: var(--accent);
  --c-green: var(--ok);
  --c-red: var(--bad);
  --c-amber: var(--warn);
  --radius: var(--r);
}

.ch-legacy .container {
  max-width: var(--maxw);
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

@media (max-width: 900px) {
  .site-header .site-nav {
    position: fixed;
    inset: 68px 0 0 0;
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    margin: 0;
    padding: 20px 28px 40px;
    background: var(--paper);
    overflow-y: auto;
    display: none;
  }

  .site-header.is-open .site-nav {
    display: flex;
  }

  .site-header .nav-link {
    padding: 14px 4px;
    font-size: 1.0625rem;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .site-header .nav-link--mobile-cta {
    display: inline-flex;
    justify-content: center;
    margin-top: 20px;
    border: 0;
    background: var(--accent);
    color: #fff;
    font-weight: 650;
    padding: 14px;
  }

  .site-header .header-actions .btn {
    display: none;
  }

  .site-header .nav-toggle {
    display: inline-flex;
  }

  .site-header .nav-dd {
    display: block;
  }

  .site-header .nav-dd-btn {
    width: 100%;
    justify-content: space-between;
    padding: 14px 4px;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
    font-size: 1.0625rem;
  }

  .site-header .nav-dd-panel {
    position: static;
    min-width: 0;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border: 0;
    border-radius: 0;
    padding: 4px 0 8px 12px;
    display: none;
  }

  .site-header .nav-dd.is-open .nav-dd-panel {
    display: grid;
  }

  .site-footer .footer-inner {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .site-footer .footer-cols {
    grid-template-columns: 1fr 1fr;
    gap: 28px 20px;
  }
}