/* 使用站点的六套主题变量；所有布局限定在更新日志页。 */
body.changelog-page {
  margin: 0;
  padding: 0;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  --log-update: #286448;
  --log-improve: #146273;
  --log-fix: #92521c;
}
.changelog-page.dark, .changelog-page.avant-dark {
  --log-update: #8fc5a5;
  --log-improve: #85c4d4;
  --log-fix: #e6b482;
}
.changelog-page.nerv {
  --log-update: #85d69e;
  --log-improve: #ff9900;
  --log-fix: #ffb470;
}
.changelog-page *, .changelog-page *::before, .changelog-page *::after { box-sizing: border-box; }
.changelog-page a { color: inherit; text-underline-offset: 5px; }
.changelog-page a:focus-visible, .changelog-page select:focus-visible {
  outline: 2px solid var(--text); outline-offset: 5px;
}
.changelog-nav {
  max-width: 1280px; margin: auto; padding: 25px 48px;
  display: flex; justify-content: space-between; align-items: center; gap: 24px;
  border-bottom: 1px solid var(--border);
}
.changelog-brand { font-size: 20px; font-weight: 750; text-decoration: none; letter-spacing: .06em; }
.changelog-brand span { margin-left: 16px; font-size: 12px; font-weight: 400; letter-spacing: .1em; color: var(--text-muted); }
.changelog-controls { display: flex; align-items: center; gap: 14px; font-size: 13px; }
.changelog-theme-label { color: var(--text-muted); }
.changelog-controls select {
  min-height: 44px; padding: 8px 30px 8px 12px;
  background: var(--bg); color: var(--text); border: 1px solid var(--border);
  border-radius: var(--radius-sm); font: inherit; cursor: pointer;
}
.changelog-back { display: inline-flex; gap: 8px; align-items: center; min-height: 44px; text-decoration: none; }
.changelog-back:hover, .changelog-footer a:hover { text-decoration: underline; }
.changelog-main { max-width: 1184px; margin: auto; padding: 72px 48px 40px; }
.changelog-intro { margin-bottom: 94px; }
.changelog-kicker { margin: 0 0 20px; font: 12px var(--font-mono); letter-spacing: .24em; color: var(--text-secondary); }
.changelog-intro h1 { margin: 0; font-size: clamp(38px, 5.4vw, 64px); line-height: 1.2; letter-spacing: -.045em; font-weight: 800; }
.changelog-page.avant-light .changelog-intro h1, .changelog-page.avant-dark .changelog-intro h1 { font-family: var(--font-zh-serif); }
.changelog-title-dot { color: var(--primary); margin-left: 4px; }
.changelog-lead { max-width: 42em; margin: 24px 0 0; color: var(--text-secondary); font-size: 17px; line-height: 1.9; }
.changelog-date-note { margin: 12px 0 0; color: var(--text-muted); font-size: 12px; line-height: 1.8; }
.changelog-group { margin-bottom: 70px; }
.changelog-group h2 { display: flex; align-items: baseline; flex-wrap: wrap; gap: 20px; margin: 0; padding: 0 0 23px; border-bottom: 1px solid var(--border); font-size: 28px; letter-spacing: -.025em; line-height: 1.5; }
.changelog-group h2 span { font-size: 13px; font-weight: 400; color: var(--text-muted); letter-spacing: .06em; }
.changelog-entry { display: grid; grid-template-columns: 148px minmax(0, 1fr); gap: 32px; padding: 32px 0; border-bottom: 1px solid var(--border); }
.changelog-entry:last-child { border-bottom: 0; }
.changelog-meta { align-self: start; display: flex; flex-direction: column; gap: 14px; padding-right: 22px; border-right: 1px solid var(--border); min-height: 66px; }
.changelog-area { color: var(--text-secondary); font-size: 13px; line-height: 1.8; letter-spacing: .07em; }
.changelog-category { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; }
.changelog-category::before { content: ''; width: 7px; height: 7px; background: currentColor; border-radius: 50%; }
.changelog-category--update { color: var(--log-update); }
.changelog-category--improve { color: var(--log-improve); }
.changelog-category--fix { color: var(--log-fix); }
.changelog-copy h3 { margin: 0; font-size: 21px; line-height: 1.65; font-weight: 700; }
.changelog-copy p { margin: 15px 0 0; font-size: 16px; line-height: 1.95; color: var(--text-secondary); overflow-wrap: anywhere; }
.changelog-footer { border-top: 1px solid var(--border); padding-top: 26px; display: flex; justify-content: space-between; gap: 24px; color: var(--text-muted); font-size: 13px; line-height: 2; }
.changelog-skip { position: fixed; top: -100px; left: 20px; z-index: 10000; padding: 14px; background: var(--bg); }
.changelog-skip:focus { top: 12px; }
.changelog-page.lego .changelog-main { background: var(--bg); }
.changelog-page.lego .changelog-nav { border-bottom: 3px solid var(--text); background: var(--header-bg); }
.changelog-page.lego .changelog-group h2 { border-bottom-width: 2px; }
.changelog-page.lego .changelog-category::before { border-radius: 2px; }
@media (max-width: 640px) {
  .changelog-nav { padding: 16px 20px; flex-wrap: wrap; gap: 10px; }
  .changelog-brand { font-size: 18px; }
  .changelog-brand span { font-size: 11px; }
  .changelog-controls { width: 100%; gap: 10px; justify-content: flex-end; }
  .changelog-theme-label { margin-right: auto; }
  .changelog-main { padding: 44px 24px 28px; }
  .changelog-intro { margin-bottom: 58px; }
  .changelog-lead { font-size: 15px; margin-top: 20px; }
  .changelog-group { margin-bottom: 48px; }
  .changelog-group h2 { font-size: 23px; gap: 14px; padding-bottom: 18px; }
  .changelog-entry { grid-template-columns: 1fr; gap: 16px; padding: 26px 0; }
  .changelog-meta { flex-direction: row; align-items: center; min-height: 0; border: 0; padding: 0; gap: 18px; }
  .changelog-copy h3 { font-size: 19px; }
  .changelog-copy p { font-size: 15px; margin-top: 12px; }
  .changelog-footer { flex-direction: column; gap: 8px; }
}

/* ── 各主题风格（2026-10-17）：页头、标题字体与分类色跟随首页主题 ── */
.changelog-category::before { border-radius: 0; }
.changelog-controls select { border-radius: 0; }

/* 绫色：白色刊头、衬线常规字重、深蓝；分类用深蓝／蓝灰／赭石 */
.changelog-page.lingse {
  --log-update: #244968; --log-improve: #566f7d; --log-fix: #854f39;
  --cl-serif: "Songti SC", "Lingse Source Serif", "Noto Serif CJK SC", "STSong", SimSun, serif;
  --cl-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
  background-color: #fafaf7; color: #494746; font-family: var(--cl-serif);
}
.changelog-page.lingse .changelog-nav { max-width: none; padding: 18px 40px; background: #fff; border-bottom: 0; box-shadow: 1px 2px 4px #0000001f; }
.changelog-page.lingse .changelog-brand { color: #244968; font: 400 22px/1.2 var(--cl-serif); letter-spacing: 3px; }
.changelog-page.lingse .changelog-brand span { font-family: var(--cl-sans); color: #76776d; }
.changelog-page.lingse .changelog-controls { font-family: var(--cl-sans); color: #76776d; }
.changelog-page.lingse .changelog-controls select { background: #fff; border-color: #d9d9cc; min-height: 38px; }
.changelog-page.lingse .changelog-kicker { font: 500 12px var(--cl-sans); letter-spacing: 2px; color: #566f7d; }
.changelog-page.lingse .changelog-intro h1 { color: #244968; font: 400 clamp(36px, 5vw, 52px)/1.25 var(--cl-serif); letter-spacing: 0; }
.changelog-page.lingse .changelog-title-dot { color: #244968; }
.changelog-page.lingse .changelog-lead { font-size: 18px; }
.changelog-page.lingse .changelog-date-note,
.changelog-page.lingse .changelog-area,
.changelog-page.lingse .changelog-category,
.changelog-page.lingse .changelog-group h2 span,
.changelog-page.lingse .changelog-footer { font-family: var(--cl-sans); }
.changelog-page.lingse .changelog-group h2 { color: #244968; font: 400 26px/1.4 var(--cl-serif); letter-spacing: 1px; border-bottom-color: #b9bcb7; }
.changelog-page.lingse .changelog-entry, .changelog-page.lingse .changelog-meta { border-color: #e1e0d8; }
.changelog-page.lingse .changelog-copy h3 { color: #273f50; font: 400 22px/1.5 var(--cl-serif); }
.changelog-page.lingse .changelog-copy p { color: #514f48; font-size: 17px; line-height: 1.9; }

/* 经典浅／深：黑色报头条加红顶线，衬线粗体标题；分类用报头红／墨／灰 */
.changelog-page.light, .changelog-page.dark { --log-update: var(--primary); --log-improve: var(--text); --log-fix: var(--text-muted); }
.changelog-page.light .changelog-nav, .changelog-page.dark .changelog-nav {
  max-width: none; padding: 14px 24px; background: var(--header-bg); color: #fff;
  border-top: 3px solid var(--header-accent); border-bottom: 1px solid rgba(255, 255, 255, .1);
}
.changelog-page.light .changelog-brand, .changelog-page.dark .changelog-brand { font-family: var(--font-display); font-weight: 600; }
.changelog-page.light .changelog-brand span, .changelog-page.dark .changelog-brand span,
.changelog-page.light .changelog-theme-label, .changelog-page.dark .changelog-theme-label { color: rgba(255, 255, 255, .65); }
.changelog-page.light .changelog-controls select, .changelog-page.dark .changelog-controls select { min-height: 36px; background: transparent; color: #fff; border-color: rgba(255, 255, 255, .4); }
.changelog-page.light .changelog-controls select option, .changelog-page.dark .changelog-controls select option { color: #1a1a1a; }
.changelog-page.light .changelog-kicker, .changelog-page.dark .changelog-kicker { color: var(--primary); font-weight: 700; }
.changelog-page.light .changelog-intro h1, .changelog-page.dark .changelog-intro h1,
.changelog-page.light .changelog-group h2, .changelog-page.dark .changelog-group h2,
.changelog-page.light .changelog-copy h3, .changelog-page.dark .changelog-copy h3 { font-family: var(--font-display); letter-spacing: 0; }
.changelog-page.light .changelog-intro h1, .changelog-page.dark .changelog-intro h1 { font-weight: 900; }
.changelog-page.light .changelog-group h2, .changelog-page.dark .changelog-group h2 { border-bottom: 2px solid var(--text); }

/* 新版浅／深：红顶线加墨线页头；分类用强调红／墨／灰 */
.changelog-page.avant-light, .changelog-page.avant-dark { --log-update: var(--av-accent); --log-improve: var(--av-ink); --log-fix: var(--text-muted); }
.changelog-page.avant-light .changelog-nav, .changelog-page.avant-dark .changelog-nav {
  max-width: none; border-top: 3px solid var(--av-accent); border-bottom: 1.5px solid var(--av-ink);
}
.changelog-page.avant-light .changelog-brand, .changelog-page.avant-dark .changelog-brand { font-family: var(--font-zh-serif); font-weight: 900; }
.changelog-page.avant-light .changelog-controls select, .changelog-page.avant-dark .changelog-controls select { border: 1.5px solid var(--av-ink); }
.changelog-page.avant-light .changelog-kicker, .changelog-page.avant-dark .changelog-kicker { color: var(--av-accent); font-weight: 700; }
.changelog-page.avant-light .changelog-group h2, .changelog-page.avant-dark .changelog-group h2 { font-family: var(--font-zh-serif); font-weight: 900; border-bottom: 1.5px solid var(--av-ink); }
.changelog-page.avant-light .changelog-copy h3, .changelog-page.avant-dark .changelog-copy h3 { font-family: var(--font-zh-serif); font-weight: 900; }

/* 手机页头：品牌、主题选择与返回排成一行；“主题”二字只给读屏软件 */
@media (max-width: 640px) {
  .changelog-page .changelog-nav { flex-wrap: nowrap; padding: 12px 16px; gap: 10px; }
  .changelog-page.lingse .changelog-nav { padding: 12px 16px; }
  .changelog-page .changelog-brand span { display: none; }
  .changelog-page .changelog-controls { width: auto; gap: 8px; }
  .changelog-page .changelog-theme-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
  .changelog-page .changelog-controls select { min-height: 36px; padding: 6px 26px 6px 10px; font-size: 13px; }
  .changelog-page .changelog-back span { display: none; }
}