/* CP China 官网共享样式
   设计令牌与 site/index.html 内联样式保持同源，改色时两处需同步。
   仅包含：变量 / 基础排版 / 顶栏 / 文档型页面（隐私政策·服务条款）所需样式。
*/

:root {
  --brand: #ff6b4a;
  --brand-strong: #c9451f;
  --brand-hover: #b03a19;
  --brand-tint: #fff1eb;
  --ink: #111827;
  --ink-2: #4b5563;
  --ink-3: #6b7280;
  --line: #e5e7eb;
  --surface: #ffffff;
  --bg: #fbfaf9;
  --bg-alt: #f4f2f0;
  --ok: #059669;
  --radius: 18px;
  --shadow-sm: 0 1px 2px rgb(0 0 0 / .05);
  --shadow-md: 0 6px 20px -4px rgb(0 0 0 / .12);
}

@media (prefers-color-scheme: dark) {
  :root {
    --brand: #ff8a6a;
    --brand-strong: #e8603c;
    --brand-hover: #f0704d;
    --brand-tint: #3d1a0e;
    --ink: #f3f4f6;
    --ink-2: #c7cbd1;
    --ink-3: #9ca3af;
    --line: #2f3339;
    --surface: #191c1f;
    --bg: #121416;
    --bg-alt: #171a1d;
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 84px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Noto Sans SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans Khmer", "Noto Sans Thai", Roboto, sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 860px; margin: 0 auto; padding: 0 22px; }
a { color: inherit; }

/* ---------- 顶栏 ---------- */
header.bar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.bar-in { display: flex; align-items: center; gap: 14px; height: 62px; }

.logo {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 800;
  font-size: 16px;
  letter-spacing: -.02em;
  text-decoration: none;
}

.logo-dot {
  width: 28px;
  height: 28px;
  border-radius: 9px;
  background: linear-gradient(135deg, var(--brand), #ff9d80);
  flex-shrink: 0;
}

.spacer { flex: 1; }

select.lang {
  appearance: none;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 999px;
  padding: 7px 30px 7px 13px;
  font-size: 13px;
  font-weight: 600;
  height: 38px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='3'><path d='M6 9l6 6 6-6'/></svg>");
  background-repeat: no-repeat;
  background-position: right 11px center;
  cursor: pointer;
}

/* ---------- 文档页头 ---------- */
.doc-head { padding: 46px 0 30px; border-bottom: 1px solid var(--line); }

.doc-head h1 {
  margin: 0 0 12px;
  font-size: clamp(28px, 5vw, 40px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.2;
}

.doc-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  font-size: 13px;
  color: var(--ink-3);
}

.doc-meta .chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 11px;
  border-radius: 999px;
  background: var(--brand-tint);
  color: var(--brand-strong);
  font-weight: 700;
  font-size: 12px;
}

.doc-lead {
  margin: 18px 0 0;
  font-size: 16px;
  color: var(--ink-2);
  max-width: 68ch;
}

/* ---------- 目录 ---------- */
.toc {
  margin: 26px 0 0;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.toc h2 {
  margin: 0 0 10px;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.toc ol {
  margin: 0;
  padding-left: 20px;
  columns: 2;
  column-gap: 28px;
}

@media (max-width: 640px) { .toc ol { columns: 1; } }

.toc li { margin: 5px 0; break-inside: avoid; }

.toc a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
  font-weight: 500;
}

.toc a:hover { color: var(--brand-strong); text-decoration: underline; }

/* ---------- 正文分节 ---------- */
.doc-body { padding: 8px 0 64px; }

.doc-body section { padding: 30px 0; border-bottom: 1px solid var(--line); }
.doc-body section:last-of-type { border-bottom: none; }

.doc-body h2 {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0 0 14px;
  font-size: 21px;
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.35;
  scroll-margin-top: 84px;
}

.doc-body h2 .num {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  background: var(--brand-tint);
  color: var(--brand-strong);
  font-size: 14px;
  font-weight: 800;
}

.doc-body h3 {
  margin: 20px 0 8px;
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.doc-body p { margin: 0 0 12px; font-size: 15px; color: var(--ink-2); }
.doc-body p:last-child { margin-bottom: 0; }

.doc-body ul,
.doc-body ol { margin: 0 0 12px; padding-left: 22px; font-size: 15px; color: var(--ink-2); }
.doc-body li { margin: 6px 0; }
.doc-body li::marker { color: var(--brand); }
.doc-body strong { color: var(--ink); font-weight: 700; }
.doc-body a { color: var(--brand-strong); text-decoration: underline; }

/* 强调框 */
.callout {
  margin: 16px 0 0;
  padding: 14px 18px;
  border-radius: 14px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  background: var(--bg-alt);
  font-size: 14.5px;
  color: var(--ink-2);
}

.callout strong { color: var(--ink); }

/* ---------- 页脚 ---------- */
footer.foot {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  padding: 34px 0 40px;
}

.foot-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 26px;
}

@media (max-width: 700px) { .foot-grid { grid-template-columns: 1fr; gap: 20px; } }

.foot h4 {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.foot ul { list-style: none; margin: 0; padding: 0; }
.foot li { margin: 7px 0; }

.foot a {
  font-size: 14px;
  color: var(--ink-2);
  text-decoration: none;
}

.foot a:hover { color: var(--brand-strong); }

.foot-copy {
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--ink-3);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  align-items: center;
}

/* ---------- 无障碍：尊重减弱动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation: none !important; transition: none !important; }
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 6px;
}