/* ================= LAK 文档页（白皮书）排版 · 赛博朋克阅读版 ================= */
/* 依赖 style.css 中的 :root 变量与 .nav / .notice / .btn / .footer-* 样式
 *
 * 设计取舍：与官网同为赛博朋克视觉，但这是**长文阅读场景**，因此做了三处克制——
 *   1. 关闭全局扫描线（body::after）并把网格调淡，避免干扰阅读
 *   2. 正文不用纯霓虹色，改用高对比的冷白 #c9d9ec，长时间阅读不刺眼
 *   3. 打印时整体还原为浅色（深色底打印既费墨又难读），PDF 导出依旧正式
 */

.doc-page { background: var(--bg); }

/* 长文页：关闭扫描线，调淡网格 */
body::after { display: none; }
body::before { opacity: 0.5; }

.doc {
  max-width: 920px;
  margin: 0 auto;
  padding: 40px 24px 72px;
}

.doc-body {
  background: linear-gradient(160deg, rgba(13, 16, 24, 0.94), rgba(6, 8, 14, 0.9));
  border: 1px solid var(--line);
  border-radius: 4px;
  box-shadow: inset 0 0 60px rgba(0, 229, 255, 0.025), var(--shadow-md);
  padding: 52px 60px 60px;
}

/* ---------------- 标题层级 ---------------- */

.doc-body h1 {
  font-size: 34px;
  line-height: 1.3;
  margin: 0 0 6px;
  font-weight: 900;
  letter-spacing: -0.01em;
  text-shadow: 0 0 34px rgba(0, 229, 255, 0.22);
}

.doc-body h1 + p { color: var(--muted); font-size: 15px; }

.doc-body h2 {
  font-size: 23px;
  margin: 46px 0 16px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-weight: 800;
  color: #ffffff;
}

.doc-body h2::before {
  content: '// ';
  color: var(--neon-2);
  font-family: var(--mono);
  font-size: 0.66em;
  vertical-align: 0.2em;
  letter-spacing: 0;
}

.doc-body h2:first-of-type { border-top: 0; padding-top: 0; }

.doc-body h3 {
  font-size: 18.5px;
  margin: 30px 0 10px;
  color: var(--neon);
  font-weight: 700;
}

.doc-body h4 {
  font-size: 16px;
  margin: 22px 0 8px;
  color: var(--text);
  font-weight: 700;
}

/* ---------------- 正文（高对比，长文可读优先） ---------------- */

.doc-body p,
.doc-body li {
  font-size: 15.5px;
  line-height: 1.85;
  color: #c9d9ec;
}

.doc-body strong { color: #ffffff; font-weight: 700; }

.doc-body a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(0, 229, 255, 0.4);
}

.doc-body a:hover { color: #ffd6ea; text-decoration-color: rgba(255, 45, 149, 0.6); }

.doc-body hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: 38px 0;
}

.doc-body ul,
.doc-body ol { padding-left: 24px; margin: 14px 0; }

.doc-body li { margin: 6px 0; }
.doc-body li::marker { color: var(--neon); }

/* ---------------- 引用 / 提示块 ---------------- */

.doc-body blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  background: rgba(0, 229, 255, 0.055);
  border-left: 3px solid var(--neon);
  border-radius: 0 3px 3px 0;
}

.doc-body blockquote p {
  margin: 0;
  color: #bcd4e8;
  font-size: 14.5px;
  line-height: 1.75;
}

.doc-body blockquote strong { color: #ffffff; }

/* ---------------- 代码 ---------------- */

.doc-body code {
  background: rgba(0, 229, 255, 0.08);
  border: 1px solid rgba(0, 229, 255, 0.2);
  border-radius: 2px;
  padding: 1px 6px;
  font-family: var(--mono);
  font-size: 13.5px;
  color: var(--neon);
}

.doc-body pre {
  background: rgba(2, 4, 8, 0.72);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 18px 20px;
  overflow-x: auto;
  margin: 18px 0;
}

.doc-body pre code {
  background: none;
  border: 0;
  padding: 0;
  color: #a9c7e0;
  font-size: 13px;
  line-height: 1.7;
}

/* ---------------- 表格 ---------------- */

.table-wrap {
  overflow-x: auto;
  margin: 18px 0;
  border: 1px solid var(--line);
  border-radius: 3px;
}

.doc-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
}

.doc-body thead th {
  text-align: left;
  background: rgba(0, 229, 255, 0.08);
  color: var(--neon);
  font-weight: 700;
  padding: 11px 15px;
  border-bottom: 1px solid var(--line-strong);
  white-space: nowrap;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
}

.doc-body tbody td {
  padding: 11px 15px;
  border-bottom: 1px solid rgba(0, 229, 255, 0.09);
  vertical-align: top;
  line-height: 1.65;
  color: #c9d9ec;
}

.doc-body tbody tr:last-child td { border-bottom: 0; }
.doc-body tbody tr:nth-child(even) { background: rgba(0, 229, 255, 0.025); }

/* ---------------- 页脚 ---------------- */

.doc-foot {
  margin: 22px 0 0;
  text-align: center;
  color: var(--dim);
  font-size: 13px;
  font-family: var(--mono);
}

.doc-footer {
  border-top: 1px solid var(--line);
  background: rgba(4, 5, 10, 0.9);
  padding: 34px 0 26px;
  margin-top: 40px;
}

/* ---------------- 响应式 ---------------- */

@media (max-width: 720px) {
  .doc { padding: 24px 14px 48px; }
  .doc-body { padding: 30px 20px 36px; border-radius: 3px; }
  .doc-body h1 { font-size: 25px; }
  .doc-body h2 { font-size: 19.5px; }
  .doc-body h3 { font-size: 17px; }
  .doc-body p, .doc-body li { font-size: 15px; }
}

/* ---------------- 打印 / 导出 PDF ---------------- */
/* 深色底打印既费墨又难读 —— 打印时整体还原为正式的黑白文档 */

@media print {
  .notice, .nav, .doc-footer, .doc-foot { display: none !important; }
  body::before, body::after { display: none !important; }

  .doc-page, body { background: #fff !important; }
  .doc { max-width: none; padding: 0; }
  .doc-body {
    background: #fff !important;
    border: 0;
    box-shadow: none;
    border-radius: 0;
    padding: 0;
  }

  .doc-body h1, .doc-body h2, .doc-body h3, .doc-body h4 {
    color: #000 !important;
    text-shadow: none !important;
  }
  .doc-body h2::before { content: ''; }
  .doc-body h2 { border-top-color: #ddd !important; }
  .doc-body p, .doc-body li, .doc-body tbody td, .doc-body blockquote p {
    color: #111 !important;
  }
  .doc-body strong, .doc-body blockquote strong { color: #000 !important; }
  .doc-body a { color: #000 !important; text-decoration-color: #999 !important; }
  .doc-body li::marker { color: #333 !important; }

  .doc-body blockquote {
    background: #f5f6f8 !important;
    border-left-color: #999 !important;
  }
  .doc-body code {
    background: #f1f2f5 !important;
    border-color: #ddd !important;
    color: #111 !important;
  }
  .doc-body pre {
    background: #f7f8fa !important;
    border-color: #ddd !important;
  }
  .doc-body pre code { color: #111 !important; }

  .doc-body table { font-size: 9.5pt; }
  .doc-body thead th {
    background: #f1f0fb !important;
    color: #000 !important;
    border-bottom-color: #ccc !important;
  }
  .doc-body tbody td { border-bottom-color: #e5e5e5 !important; }
  .doc-body tbody tr:nth-child(even) { background: #fafafa !important; }
  .table-wrap { border-color: #ddd !important; }

  .doc-body h1 { font-size: 26pt; }
  .doc-body h2 {
    font-size: 16pt;
    page-break-after: avoid;
    break-after: avoid;
  }
  .doc-body h3 { font-size: 13pt; page-break-after: avoid; break-after: avoid; }
  .doc-body table,
  .doc-body pre,
  .doc-body blockquote { page-break-inside: avoid; break-inside: avoid; }
  .table-wrap { overflow: visible; break-inside: avoid; }

  .doc-body thead th { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
  @page { margin: 16mm 14mm; }
}