/* ============================================================
   创世史诗 / 长文阅读页样式
   2026-10-31 新站 v8-genesis.html 使用
   来源：老站 genesis-epic.html 的 .md-* 排版规则（版式原样保留）
   换皮：金色系 → 新站青紫系（--cyan / --violet / --grad）
   独立成文件：不进 main-extra.css，出问题只需摘掉一行 <link> 即可回滚
   ============================================================ */

/* ---------- 摘要区 ---------- */
.epic-abstract {
  max-width: 920px; margin: 0 auto 56px; padding: 32px;
  background: linear-gradient(135deg, rgba(167, 139, 250, .06), rgba(34, 211, 238, .04));
  border: 1px solid var(--line-hi); border-radius: 18px; position: relative;
}
.epic-abstract__label {
  position: absolute; top: -12px; left: 24px; padding: 4px 14px;
  background: var(--bg-0); border: 1px solid var(--violet); border-radius: 99px;
  font-size: 10px; letter-spacing: 3px; color: var(--violet); font-weight: 700;
}
.epic-abstract__zh {
  font-size: 15px; line-height: 1.95; color: var(--text);
  margin: 0 0 20px; text-align: justify;
}
.epic-abstract__en {
  font-family: Georgia, serif; font-size: 14px; line-height: 1.85;
  color: var(--muted); font-style: italic;
  padding-top: 20px; border-top: 1px dashed var(--line); text-align: justify;
}
.epic-abstract__label-en {
  display: inline-block; padding: 2px 10px;
  background: rgba(34, 211, 238, .1); color: var(--cyan);
  font-size: 9px; letter-spacing: 2px; font-weight: 700;
  border-radius: 4px; margin-bottom: 10px; text-transform: uppercase;
}
.epic-abstract__keywords {
  margin-top: 24px; padding-top: 20px; border-top: 1px dashed var(--line);
}
.epic-abstract__keywords-label {
  font-size: 11px; color: var(--muted); letter-spacing: 2px; margin-bottom: 10px; font-weight: 700;
}
.epic-abstract__keywords-list { font-size: 13px; color: var(--cyan); line-height: 1.7; }
.epic-abstract__keywords-list strong { color: var(--violet); font-weight: 700; }

/* ---------- 布局：左目录 + 右正文 ---------- */
.epic-layout {
  max-width: 1280px; margin: 0 auto; padding: 0 24px 80px;
  display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 48px;
}
.epic-toc {
  position: sticky; top: 88px; align-self: start;
  max-height: calc(100vh - 100px); overflow-y: auto;
  padding: 20px; background: rgba(255, 255, 255, .02);
  border: 1px solid var(--line); border-radius: 14px;
}
.epic-toc::-webkit-scrollbar { width: 4px; }
.epic-toc::-webkit-scrollbar-thumb { background: var(--cyan); border-radius: 2px; }
.epic-toc__title {
  font-size: 11px; letter-spacing: 3px; color: var(--cyan);
  padding-bottom: 12px; border-bottom: 1px solid var(--line);
  margin-bottom: 12px; text-transform: uppercase; font-weight: 700;
}
.epic-toc ol { list-style: none; margin: 0; padding: 0; }
.epic-toc li { margin-bottom: 2px; }
.epic-toc a {
  display: flex; align-items: baseline; gap: 10px; padding: 6px 8px;
  color: var(--muted); text-decoration: none; border-radius: 6px;
  font-size: 13px; transition: all .2s; line-height: 1.5;
}
.epic-toc a:hover { color: var(--cyan); background: rgba(34, 211, 238, .06); }
.epic-toc .toc-num {
  font-size: 10px; color: var(--cyan); flex-shrink: 0;
  font-weight: 700; font-variant-numeric: tabular-nums;
}
.epic-toc .toc-text { flex: 1; }

/* ---------- 章节 ---------- */
.epic-chapter {
  margin-bottom: 80px; padding-bottom: 48px;
  border-bottom: 1px solid var(--line); scroll-margin-top: 96px;
}
.epic-chapter:last-child { border-bottom: 0; }
.epic-chapter__marker {
  display: inline-block; padding: 4px 12px;
  background: rgba(34, 211, 238, .08); color: var(--cyan);
  font-size: 10px; letter-spacing: 3px; border-radius: 4px;
  margin-bottom: 12px; text-transform: uppercase; font-weight: 700;
}
.epic-chapter__title {
  font-size: 30px; line-height: 1.35; color: var(--text);
  margin: 0 0 24px; padding-bottom: 16px;
  border-bottom: 1px solid var(--line); position: relative;
}
.epic-chapter__title::before {
  content: ''; position: absolute; bottom: -1px; left: 0;
  width: 80px; height: 2px; background: var(--grad);
}

/* ---------- MD 元素（版式沿用老站，配色换新站） ---------- */
.epic-chapter__body .md-p {
  margin: 0 0 16px; font-size: 15.5px; line-height: 1.95;
  color: var(--text-2); text-align: justify;
}
.epic-chapter__body .md-h3 {
  font-size: 21px; color: var(--cyan); margin: 32px 0 16px;
  padding-left: 14px; border-left: 3px solid var(--cyan);
}
.epic-chapter__body .md-h4 {
  font-size: 17.5px; color: var(--violet); margin: 24px 0 12px;
}
.epic-chapter__body .md-h5 {
  font-size: 16px; color: var(--cyan); margin: 20px 0 10px;
}
.epic-chapter__body .md-h6 {
  font-size: 14px; color: var(--muted); margin: 16px 0 8px; font-weight: 600;
}
.epic-chapter__body .md-quote {
  margin: 20px 0; padding: 16px 24px;
  background: linear-gradient(90deg, rgba(167, 139, 250, .08), rgba(167, 139, 250, .02));
  border-left: 3px solid var(--violet);
  border-radius: 0 8px 8px 0; font-style: italic; color: var(--text);
}
.epic-chapter__body .md-quote p { margin: 0 0 8px; }
.epic-chapter__body .md-quote p:last-child { margin-bottom: 0; }
.epic-chapter__body .md-list { margin: 12px 0 20px 24px; padding-left: 18px; }
.epic-chapter__body .md-list li { margin-bottom: 6px; line-height: 1.85; color: var(--text-2); }
.epic-chapter__body .md-list li::marker { color: var(--cyan); }
.epic-chapter__body .md-code {
  background: rgba(167, 139, 250, .12); color: var(--violet);
  padding: 2px 6px; border-radius: 4px;
  font-family: Consolas, Monaco, monospace; font-size: 13px;
}
.epic-chapter__body .md-pre {
  margin: 20px 0; padding: 16px 20px;
  background: rgba(0, 0, 0, .4); border: 1px solid var(--line);
  border-radius: 10px; overflow-x: auto;
  font-family: Consolas, Monaco, monospace; font-size: 13px;
  line-height: 1.6; color: var(--cyan);
}
.epic-chapter__body .md-pre code { background: none; color: inherit; padding: 0; }
.epic-chapter__body .md-table {
  width: 100%; margin: 20px 0; border-collapse: collapse;
  background: rgba(255, 255, 255, .02); border-radius: 8px; overflow: hidden;
}
.epic-chapter__body .md-table th,
.epic-chapter__body .md-table td {
  padding: 10px 14px; border: 1px solid var(--line);
  text-align: left; font-size: 13.5px; vertical-align: top;
}
.epic-chapter__body .md-table th {
  background: rgba(34, 211, 238, .08); color: var(--cyan);
  font-weight: 700; white-space: nowrap;
}
.epic-chapter__body .md-table td { color: var(--text-2); }
.epic-chapter__body .md-table tr:hover td { background: rgba(255, 255, 255, .02); }
.epic-chapter__body .md-hr {
  margin: 32px 0; border: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-hi), transparent);
}
.epic-chapter__body .md-p strong,
.epic-chapter__body .md-quote strong { color: var(--cyan); font-weight: 700; }
.epic-chapter__body .md-p em,
.epic-chapter__body .md-quote em { color: var(--violet); font-style: normal; }
.epic-chapter__body a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }
.epic-chapter__body .md-hr + .md-p,
.epic-chapter__body .md-h3,
.epic-chapter__body .md-h4 { scroll-margin-top: 96px; }

/* ---------- 论文附录等直属内容区（不在 chapter__body 内的 h2/h3） ---------- */
.epic-content > h2 {
  font-size: 24px; color: var(--text); margin: 56px 0 18px;
  padding-bottom: 12px; border-bottom: 1px solid var(--line);
  position: relative; scroll-margin-top: 96px;
}
.epic-content > h2::before {
  content: ''; position: absolute; bottom: -1px; left: 0;
  width: 70px; height: 2px; background: var(--grad);
}
.epic-content > h2:first-child { margin-top: 0; }
.epic-content > h3 {
  font-size: 19px; color: var(--cyan); margin: 32px 0 14px;
  padding-left: 13px; border-left: 3px solid var(--cyan); scroll-margin-top: 96px;
}
.epic-content > h4 { font-size: 16.5px; color: var(--violet); margin: 24px 0 10px; }
.epic-content > p {
  margin: 0 0 16px; font-size: 15.5px; line-height: 1.95;
  color: var(--text-2); text-align: justify;
}
.epic-content > p strong { color: var(--cyan); }
.epic-content > ul, .epic-content > ol { margin: 0 0 18px; padding-left: 24px; }
.epic-content > li { color: var(--text-2); line-height: 1.85; margin-bottom: 7px; }
.epic-content > blockquote {
  margin: 20px 0; padding: 16px 22px;
  background: linear-gradient(90deg, rgba(167, 139, 250, .08), rgba(167, 139, 250, .02));
  border-left: 3px solid var(--violet); border-radius: 0 8px 8px 0;
  font-style: italic; color: var(--text);
}
.epic-content > pre {
  margin: 20px 0; padding: 16px 20px; background: rgba(0, 0, 0, .4);
  border: 1px solid var(--line); border-radius: 10px; overflow-x: auto;
  font-family: Consolas, Monaco, monospace; font-size: 13px; line-height: 1.6; color: var(--cyan);
}
.epic-content > table {
  width: 100%; margin: 20px 0; border-collapse: collapse;
  background: rgba(255, 255, 255, .02);
}
.epic-content > th, .epic-content > td {
  padding: 10px 14px; border: 1px solid var(--line); text-align: left;
  font-size: 13.5px; vertical-align: top; color: var(--text-2);
}
.epic-content > th { background: rgba(34, 211, 238, .08); color: var(--cyan); font-weight: 700; }
.epic-content > hr {
  margin: 32px 0; border: 0; height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-hi), transparent);
}
.epic-content > a { color: var(--cyan); text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1000px) {
  .epic-layout { grid-template-columns: 1fr; gap: 24px; }
  .epic-toc { position: relative; top: auto; max-height: none; }
  .epic-chapter__title { font-size: 24px; }
  .epic-chapter__body .md-p { font-size: 15px; }
  .epic-abstract { padding: 26px 20px; }
}