/* =========================================================
   青玉智枢 QINGYU ZHISHU — 法律文本页（隐私政策 / 用户协议）
   与 site.css 解耦：法律文本自有排版系统
   ========================================================= */

:root {
  /* 主色 */
  --crimson: #a5121e;
  --crimson-deep: #7d0b15;
  --crimson-soft: #c8353f;
  --crimson-wash: #f7eceb;

  /* 纸感底与墨色 */
  --paper: #f7f4ee;
  --paper-2: #f1ece2;
  --white: #fffdfa;

  --ink: #17130f;
  --ink-80: #3b342d;
  --ink-60: #6b625a;
  --ink-45: #948b83;
  --ink-30: #b8b0a8;

  --line: rgba(23, 19, 15, .10);
  --line-2: rgba(23, 19, 15, .16);
  --line-crimson: rgba(165, 18, 30, .22);

  --serif: "Noto Serif SC", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --sans: "Noto Serif SC", "Noto Serif CJK SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --max-body: 860px;
  --max-page: 1200px;
  --head-h: 68px;

  --shadow-sm: 0 1px 2px rgba(23, 19, 15, .05), 0 8px 22px -14px rgba(23, 19, 15, .20);
  --shadow-md: 0 2px 6px rgba(23, 19, 15, .05), 0 26px 60px -28px rgba(23, 19, 15, .26);

  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--head-h) + 22px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  -webkit-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: .18;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='180' height='180' filter='url(%23n)' opacity='.35'/%3E%3C/svg%3E");
  mix-blend-mode: multiply;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

::selection { background: rgba(165, 18, 30, .16); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.32;
  margin: 0;
  color: var(--ink);
}

p { margin: 0; }

/* =========================================================
   顶部栏
   ========================================================= */

.lhead {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--head-h);
  background: rgba(247, 244, 238, .88);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.lhead-in {
  max-width: var(--max-page);
  height: 100%;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.lbrand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.lbrand img {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  flex: none;
}

.lbrand-txt {
  display: flex;
  flex-direction: column;
  line-height: 1.18;
  min-width: 0;
}

.lbrand-txt strong {
  font-family: var(--serif);
  font-size: 16px;
  letter-spacing: .02em;
}

.lbrand-txt span {
  font-size: 10.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ink-45);
  white-space: nowrap;
}

.lhead-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.lhead-tag {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--crimson);
  border: 1px solid var(--line-crimson);
  background: var(--crimson-wash);
  padding: 4px 11px;
  border-radius: 999px;
  white-space: nowrap;
}

.lback {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 13.5px;
  color: var(--ink-80);
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line-2);
  transition: color .18s, border-color .18s, background .18s;
  white-space: nowrap;
}

.lback:hover {
  color: var(--crimson);
  border-color: var(--line-crimson);
  background: var(--crimson-wash);
}

.lback svg { width: 13px; height: 13px; }

/* =========================================================
   页面骨架：左正文 + 右目录
   ========================================================= */

.lshell {
  max-width: var(--max-page);
  margin: 0 auto;
  padding: 46px 28px 80px;
  display: grid;
  grid-template-columns: minmax(0, var(--max-body)) 246px;
  gap: 64px;
  align-items: start;
}

/* ---------- 文档头部 ---------- */

.ldoc-head {
  border-bottom: 1px solid var(--line-2);
  padding-bottom: 26px;
  margin-bottom: 34px;
}

.ldoc-kicker {
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--crimson);
  margin-bottom: 12px;
}

.ldoc-head h1 {
  font-size: clamp(28px, 4vw, 38px);
  line-height: 1.24;
  margin-bottom: 16px;
}

.ldoc-lede {
  font-size: 15.5px;
  color: var(--ink-60);
  max-width: 74ch;
}

.ldoc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin-top: 20px;
}

.ldoc-meta span {
  font-size: 12.5px;
  color: var(--ink-60);
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 12px;
  white-space: nowrap;
}

.ldoc-meta span:first-child {
  color: var(--crimson);
  background: var(--crimson-wash);
  border-color: var(--line-crimson);
  font-weight: 600;
}

/* ---------- 正文排版 ---------- */

.legal-body {
  max-width: var(--max-body);
  min-width: 0;
}

.legal-body section {
  margin-bottom: 44px;
}

.legal-body h2 {
  position: relative;
  font-size: 21px;
  line-height: 1.45;
  padding-bottom: 12px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
}

.legal-body h2::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 8px;
  width: 3px;
  height: 22px;
  border-radius: 2px;
  background: var(--crimson);
  opacity: .9;
}

.legal-body h3 {
  font-size: 16.5px;
  margin: 26px 0 10px;
  color: var(--ink);
}

.legal-body h4 {
  font-size: 15px;
  margin: 20px 0 8px;
  color: var(--ink-80);
  font-family: var(--sans);
  font-weight: 700;
}

.legal-body p {
  margin: 0 0 13px;
  color: var(--ink-80);
  text-align: justify;
  overflow-wrap: break-word;
}

.legal-body p strong,
.legal-body li strong {
  color: var(--ink);
  font-weight: 700;
}

.legal-body a {
  color: var(--crimson);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--line-crimson);
  transition: text-decoration-color .18s;
}

.legal-body a:hover { text-decoration-color: var(--crimson); }

.legal-body ul,
.legal-body ol {
  margin: 0 0 14px;
  padding-left: 22px;
  color: var(--ink-80);
}

.legal-body li {
  margin-bottom: 7px;
}

.legal-body li::marker { color: var(--crimson-soft); }

.legal-body code {
  font-family: var(--mono);
  font-size: 13px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--crimson-deep);
  word-break: break-all;
}

.legal-body ol > li::marker {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-45);
}

/* 条款编号：正文内嵌的 "1.1" 段落样式 */
.legal-body p.clause,
.legal-body li.clause {
  margin-bottom: 10px;
}

.legal-body p.clause {
  padding-left: 4px;
}

.legal-body p.clause > b,
.legal-body b.num {
  color: var(--crimson);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13.5px;
  letter-spacing: .02em;
}

/* 引述 / 提示块 */
.legal-body blockquote {
  margin: 0 0 16px;
  padding: 14px 18px;
  background: var(--white);
  border: 1px solid var(--line);
  border-left: 3px solid var(--crimson);
  border-radius: var(--r-sm);
  color: var(--ink-80);
}

.legal-body blockquote p {
  margin: 0 0 6px;
  font-size: 14.5px;
}

.legal-body blockquote p:last-child { margin-bottom: 0; }

.legal-body blockquote.note {
  border-left-color: var(--crimson);
  background: var(--crimson-wash);
}

.legal-body blockquote.note p { color: var(--ink-80); }

.legal-body blockquote.plain {
  border-left-color: var(--line-2);
}

/* 表格（清单类信息） */
.legal-body .table-wrap {
  margin: 0 0 18px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--white);
}

.legal-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  min-width: 520px;
}

.legal-body th,
.legal-body td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--ink-80);
}

.legal-body th {
  background: var(--paper-2);
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  white-space: nowrap;
}

.legal-body tr:last-child td { border-bottom: 0; }

.legal-body td:first-child {
  font-weight: 600;
  color: var(--ink);
  white-space: nowrap;
}

/* 键值清单 */
.legal-body .kv {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--white);
}

.legal-body .kv li {
  display: grid;
  grid-template-columns: 172px minmax(0, 1fr);
  gap: 14px;
  padding: 11px 16px;
  margin: 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.legal-body .kv li:last-child { border-bottom: 0; }

.legal-body .kv .k {
  color: var(--ink);
  font-weight: 600;
}

/* 收尾签名 */
.legal-sign {
  margin-top: 44px;
  padding-top: 22px;
  border-top: 1px solid var(--line-2);
  font-size: 14px;
  color: var(--ink-60);
}

.legal-sign p:first-child {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 6px;
}

.legal-sign strong {
  color: var(--ink);
  font-weight: 700;
}

/* =========================================================
   右侧目录
   ========================================================= */

.ltoc {
  position: sticky;
  top: calc(var(--head-h) + 26px);
  max-height: calc(100vh - var(--head-h) - 52px);
  overflow-y: auto;
  padding: 20px 4px 20px 20px;
  border-left: 1px solid var(--line);
  scrollbar-width: thin;
}

.ltoc::-webkit-scrollbar { width: 5px; }
.ltoc::-webkit-scrollbar-thumb {
  background: var(--line-2);
  border-radius: 3px;
}

.ltoc-title {
  font-family: var(--serif);
  font-size: 12.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--ink-45);
  margin-bottom: 14px;
  padding-left: 2px;
}

.ltoc ol {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: toc;
}

.ltoc li {
  counter-increment: toc;
  margin: 0;
}

.ltoc a {
  display: block;
  position: relative;
  padding: 6px 10px 6px 30px;
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--ink-60);
  border-left: 2px solid transparent;
  transition: color .18s, background .18s, border-color .18s;
}

.ltoc a::before {
  content: counter(toc, decimal-leading-zero);
  position: absolute;
  left: 8px;
  top: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  color: var(--ink-30);
  letter-spacing: .02em;
}

.ltoc a:hover {
  color: var(--ink);
  background: rgba(165, 18, 30, .05);
}

.ltoc a.on {
  color: var(--crimson);
  font-weight: 600;
  border-left-color: var(--crimson);
  background: rgba(165, 18, 30, .07);
}

.ltoc a.on::before { color: var(--crimson); }

.ltoc-foot {
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--ink-45);
}

/* =========================================================
   页脚
   ========================================================= */

.lfoot {
  border-top: 1px solid var(--line-2);
  background: var(--paper-2);
}

.lfoot-in {
  max-width: var(--max-page);
  margin: 0 auto;
  padding: 34px 28px 40px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 26px;
  align-items: start;
}

.lfoot-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  margin-bottom: 10px;
}

.lfoot-brand img {
  width: 28px;
  height: 28px;
  border-radius: 7px;
}

.lfoot-brand strong {
  font-family: var(--serif);
  font-size: 15px;
}

.lfoot p {
  font-size: 13px;
  line-height: 1.85;
  color: var(--ink-60);
  margin: 0 0 4px;
  max-width: 62ch;
}

.lfoot-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.lfoot-links a {
  font-size: 13px;
  color: var(--ink-80);
  border: 1px solid var(--line-2);
  background: var(--white);
  border-radius: 999px;
  padding: 6px 14px;
  transition: color .18s, border-color .18s, background .18s;
  white-space: nowrap;
}

.lfoot-links a:hover {
  color: var(--crimson);
  border-color: var(--line-crimson);
  background: var(--crimson-wash);
}

.lfoot-dates {
  grid-column: 1 / -1;
  padding-top: 20px;
  margin-top: 4px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  font-size: 12.5px;
  color: var(--ink-45);
}

.lfoot-dates span b {
  color: var(--ink-60);
  font-weight: 600;
  margin-right: 6px;
}

/* =========================================================
   窄屏：目录转为顶部折叠
   ========================================================= */

.ltoc-toggle { display: none; }

@media (max-width: 1000px) {
  .lshell {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
    padding: 34px 22px 66px;
  }

  .ltoc {
    display: none;
  }

  .ltoc-toggle {
    display: block;
    margin: 0 22px 26px;
    border: 1px solid var(--line-2);
    border-radius: var(--r-md);
    background: var(--white);
    overflow: hidden;
  }

  .ltoc-toggle > summary {
    list-style: none;
    cursor: pointer;
    padding: 12px 16px;
    font-family: var(--serif);
    font-size: 14.5px;
    font-weight: 700;
    color: var(--ink);
    display: flex;
    align-items: center;
    justify-content: space-between;
  }

  .ltoc-toggle > summary::-webkit-details-marker { display: none; }

  .ltoc-toggle > summary::after {
    content: "▾";
    font-size: 12px;
    color: var(--crimson);
    transition: transform .2s;
  }

  .ltoc-toggle[open] > summary::after { transform: rotate(180deg); }

  .ltoc-toggle ol {
    list-style: none;
    margin: 0;
    padding: 4px 0 10px;
    counter-reset: toc;
  }

  .ltoc-toggle li { counter-increment: toc; }

  .ltoc-toggle a {
    display: block;
    padding: 8px 16px 8px 38px;
    font-size: 13.5px;
    color: var(--ink-80);
    border-left: 2px solid transparent;
    position: relative;
  }

  .ltoc-toggle a::before {
    content: counter(toc, decimal-leading-zero);
    position: absolute;
    left: 18px;
    font-family: var(--mono);
    font-size: 10.5px;
    color: var(--ink-30);
  }

  .ltoc-toggle a.on {
    color: var(--crimson);
    border-left-color: var(--crimson);
    background: rgba(165, 18, 30, .06);
    font-weight: 600;
  }
}

@media (max-width: 720px) {
  body { font-size: 14.5px; line-height: 1.85; }

  .lhead-in { padding: 0 18px; }
  .lhead-tag { display: none; }

  .lshell { padding: 28px 18px 56px; }
  .ltoc-toggle { margin: 0 18px 22px; }

  .legal-body h2 {
    font-size: 19px;
    padding-left: 14px;
  }

  .legal-body h2::before { left: 0; top: 7px; height: 19px; }

  .legal-body .kv li {
    grid-template-columns: minmax(0, 1fr);
    gap: 2px;
    padding: 10px 14px;
  }

  .lfoot-in {
    grid-template-columns: minmax(0, 1fr);
    padding: 28px 18px 34px;
  }

  .lfoot-links { justify-content: flex-start; }
}

/* 打印 */
@media print {
  body { background: #fff; font-size: 12pt; }
  body::before, .lhead, .ltoc, .ltoc-toggle, .lfoot-links { display: none; }
  .lshell { display: block; padding: 0; }
  .legal-body { max-width: 100%; }
  .legal-body h2 { break-after: avoid; }
}