/* ==========================================================================
   site.css —— 少量补充样式
   --------------------------------------------------------------------------
   绝大部分样式由 Tailwind CDN 提供；这里只写三类 Tailwind 表达不便的东西：
     1) 待填占位块（.todo-*）—— 全站复用、需要醒目且样式一致
     2) 法律文档排版（.legal-*）—— 隐私政策 / 服务条款的章节骨架
     3) 无法用工具类表达的原生元素行为（skip link、<details> 菜单、打印样式）
   编码：UTF-8 无 BOM
   ========================================================================== */

:root {
  --c-ink: #0f172a;          /* 主文字 */
  --c-muted: #64748b;        /* 次要文字 */
  --c-line: #e2e8f0;         /* 分隔线 */
  --c-brand: #2563eb;        /* 品牌色 */
  --c-todo-bg: #fef9c3;      /* 待填块底色（黄） */
  --c-todo-border: #eab308;  /* 待填块描边 */
  --c-todo-ink: #713f12;     /* 待填块文字 */
}

/* 锚点跳转时标题不被 sticky 页头遮挡 */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}

/* --------------------------------------------------------------------------
   可访问性：跳到主内容
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1.25rem;
  background: var(--c-ink);
  color: #fff;
  font-size: 0.875rem;
  border-radius: 0 0 0.5rem 0;
}
.skip-link:focus {
  left: 0;
}

/* 统一键盘焦点样式（鼠标点击不显示） */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--c-brand);
  outline-offset: 2px;
  border-radius: 0.25rem;
}

/* --------------------------------------------------------------------------
   移动端 <details> 导航菜单
   -------------------------------------------------------------------------- */
.nav-mobile > summary {
  list-style: none;
}
.nav-mobile > summary::-webkit-details-marker {
  display: none;  /* 去掉 Safari 默认三角 */
}

/* --------------------------------------------------------------------------
   待填占位块
   --------------------------------------------------------------------------
   刻意做得醒目：这些位置的内容必须由业务方填写真实信息，
   绝不能带着占位符提交 Amazon 审核。上线前全站不应残留任何 .todo-block / .todo-inline。
   -------------------------------------------------------------------------- */
.todo-block {
  margin: 1rem 0;
  padding: 1rem 1.125rem;
  background: var(--c-todo-bg);
  border: 1px solid var(--c-todo-border);
  border-left-width: 4px;
  border-radius: 0.5rem;
  color: var(--c-todo-ink);
}

.todo-badge {
  display: inline-block;
  margin-bottom: 0.5rem;
  padding: 0.125rem 0.5rem;
  background: var(--c-todo-border);
  color: #422006;
  border-radius: 9999px;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.todo-what {
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.55;
}

.todo-meta {
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  line-height: 1.5;
}

.todo-meta-key {
  display: inline-block;
  margin-right: 0.375rem;
  font-weight: 700;
}
.todo-meta-key::after {
  content: ':';
}

.todo-ref {
  margin-top: 0.625rem;
  padding-top: 0.5rem;
  border-top: 1px dashed rgba(113, 63, 18, 0.3);
  font-size: 0.75rem;
  opacity: 0.85;
}

.todo-ref code {
  padding: 0.0625rem 0.3125rem;
  background: rgba(255, 255, 255, 0.6);
  border-radius: 0.1875rem;
  font-size: 0.6875rem;
}

/* 行内版：用于单个字段级别的待填项（邮箱、电话、地址等） */
.todo-inline {
  display: inline-block;
  padding: 0.0625rem 0.4375rem;
  background: var(--c-todo-bg);
  border: 1px solid var(--c-todo-border);
  border-radius: 0.25rem;
  color: var(--c-todo-ink);
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.5;
  white-space: normal;
  /* 重置继承来的字距：标题上的 tracking-tight（负字距）会把小号占位文字挤成一坨 */
  letter-spacing: normal;
  word-spacing: normal;
  text-transform: none;
}

/* 放在标题里的行内占位符适度放大，避免大标题位置塌成一个小色块 */
h1 .todo-inline { font-size: 1.375rem; vertical-align: middle; }
h2 .todo-inline { font-size: 1rem; vertical-align: middle; }
h3 .todo-inline { font-size: 0.875rem; vertical-align: middle; }

/* --------------------------------------------------------------------------
   法律文档排版（/privacy、/terms）
   -------------------------------------------------------------------------- */
.legal-section {
  padding-top: 2.25rem;
}
.legal-section + .legal-section {
  margin-top: 0.5rem;
  border-top: 1px solid var(--c-line);
}

.legal-h2 {
  margin-bottom: 0.75rem;
  color: var(--c-ink);
  font-size: 1.1875rem;
  font-weight: 600;
  letter-spacing: -0.011em;
  line-height: 1.4;
}

.legal-num {
  margin-right: 0.5rem;
  color: var(--c-muted);
  font-variant-numeric: tabular-nums;
  font-weight: 500;
}

.legal-lead {
  margin-bottom: 0.5rem;
  color: var(--c-muted);
  font-size: 0.875rem;
}

.legal-points {
  margin: 0 0 0.25rem;
  padding-left: 1.125rem;
  list-style: disc;
  color: #475569;
  font-size: 0.9375rem;
  line-height: 1.75;
}
.legal-points li {
  margin-bottom: 0.1875rem;
  padding-left: 0.25rem;
}

/* 侧边目录 */
.legal-toc a {
  display: block;
  padding: 0.3125rem 0.75rem;
  border-left: 2px solid var(--c-line);
  color: var(--c-muted);
  font-size: 0.8125rem;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.15s, border-color 0.15s;
}
.legal-toc a:hover {
  border-left-color: var(--c-brand);
  color: var(--c-ink);
}

/* --------------------------------------------------------------------------
   页脚
   -------------------------------------------------------------------------- */
.footer-h {
  margin-bottom: 0.875rem;
  color: var(--c-ink);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.footer-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  font-size: 0.875rem;
}

.footer-link {
  color: var(--c-muted);
  text-decoration: none;
  transition: color 0.15s;
}
.footer-link:hover {
  color: var(--c-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --------------------------------------------------------------------------
   打印：去掉导航等交互元素，便于把隐私政策 / 服务条款存档或提交审核
   -------------------------------------------------------------------------- */
@media print {
  header,
  footer,
  .skip-link,
  .legal-toc {
    display: none !important;
  }
  body {
    color: #000;
  }
  .todo-block,
  .todo-inline {
    border: 1px solid #000;
    background: transparent;
    color: #000;
  }
  a[href^='http']::after {
    content: ' (' attr(href) ')';
    font-size: 0.75em;
  }
}