/* 优软文档 — 视觉系统
   浅色为默认，深色由 [data-theme="dark"] 覆盖；配色只用一组变量，避免两套样式漂移。 */

:root {
  --bg: #f8f9fb;
  --bg-soft: #f1f3f7;
  --panel: #ffffff;
  --panel-2: #fbfcfe;
  --text: #16181d;
  --text-2: #4a5060;
  --muted: #8a91a3;
  --border: #e4e7ee;
  --border-strong: #d2d7e2;
  --accent: #2563eb;
  --accent-soft: rgba(37, 99, 235, 0.08);
  --accent-text: #1d4ed8;
  --code-bg: #f4f6fa;
  --code-border: #e2e6ef;
  --tok-kw: #9333ea;
  --tok-ty: #0e7490;
  --tok-str: #15803d;
  --tok-num: #c2410c;
  --tok-cm: #95a1b3;
  --tok-lit: #b91c1c;
  --tok-key: #1d4ed8;
  --tok-tag: #be123c;
  --tok-attr: #a16207;
  --tok-var: #0f766e;
  --tok-punc: #64748b;
  --tok-ins: #15803d;
  --tok-del: #b91c1c;
  --tok-meta: #7c3aed;
  --mark: #fff2a8;
  --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.04);
  --shadow: 0 10px 30px -12px rgba(16, 24, 40, 0.18);
  --radius: 14px;
  --radius-sm: 9px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "SFMono-Regular", Consolas,
    "Liberation Mono", Menlo, monospace;
  --maxw: 1240px;
}

[data-theme="dark"] {
  --bg: #0d1017;
  --bg-soft: #12161f;
  --panel: #151a23;
  --panel-2: #11151d;
  --text: #e8ecf4;
  --text-2: #b3bccd;
  --muted: #7f8899;
  --border: #232a36;
  --border-strong: #2e3644;
  --accent: #6d9bff;
  --accent-soft: rgba(109, 155, 255, 0.12);
  --accent-text: #9dbaff;
  --code-bg: #10141c;
  --code-border: #232b38;
  --tok-kw: #c4a7ff;
  --tok-ty: #7fd1c4;
  --tok-str: #9ae6a8;
  --tok-num: #ffb37a;
  --tok-cm: #6b7688;
  --tok-lit: #ff9e9e;
  --tok-key: #93b4ff;
  --tok-tag: #ff9ec4;
  --tok-attr: #e6c07b;
  --tok-var: #7fd1c4;
  --tok-punc: #97a2b5;
  --tok-ins: #86efac;
  --tok-del: #fca5a5;
  --tok-meta: #c4a7ff;
  --mark: #6a5a12;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow: 0 18px 40px -18px rgba(0, 0, 0, 0.7);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 3px; }

img { max-width: 100%; height: auto; }

code, pre, kbd { font-family: var(--font-mono); font-size: 0.9em; }

::selection { background: var(--accent-soft); }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--panel); padding: 8px 14px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- 头部 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex; align-items: center; gap: 22px; height: 66px;
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--text); }
.brand:hover { text-decoration: none; }
.brand-mark {
  width: 32px; height: 32px; border-radius: 9px;
  display: grid; place-items: center;
  background: linear-gradient(140deg, var(--accent), #7c3aed);
  color: #fff; font-weight: 700; font-size: 17px;
  box-shadow: var(--shadow-sm);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 15.5px; letter-spacing: 0.2px; }
.brand-text small { color: var(--muted); font-size: 11.5px; }
.site-nav { display: flex; gap: 4px; margin-left: 6px; }
.site-nav a {
  color: var(--text-2); padding: 6px 11px; border-radius: 8px; font-size: 14px;
}
.site-nav a:hover { background: var(--bg-soft); text-decoration: none; color: var(--text); }
.site-nav a.active { color: var(--accent-text); background: var(--accent-soft); font-weight: 600; }

.search { margin-left: auto; display: flex; align-items: center; }
.search input {
  width: 210px; min-width: 0; padding: 8px 12px; font-size: 13.5px;
  border: 1px solid var(--border); border-radius: 9px 0 0 9px;
  background: var(--panel); color: var(--text); outline: none;
  transition: border-color 0.15s, width 0.2s;
}
.search input:focus { border-color: var(--accent); }
.search button {
  padding: 8px 13px; font-size: 13.5px; cursor: pointer;
  white-space: nowrap; flex: 0 0 auto;
  border: 1px solid var(--border); border-left: none;
  border-radius: 0 9px 9px 0;
  background: var(--panel-2); color: var(--text-2);
}
.search button:hover { color: var(--accent-text); }

.theme-toggle {
  width: 36px; height: 36px; border-radius: 9px; cursor: pointer;
  border: 1px solid var(--border); background: var(--panel);
  color: var(--text-2); font-size: 15px; display: grid; place-items: center;
}
.theme-toggle:hover { border-color: var(--border-strong); }
[data-theme="light"] .t-moon { display: none; }
[data-theme="dark"] .t-sun { display: none; }

/* ---------- 首页 ---------- */
.page { padding-top: 40px; padding-bottom: 72px; }

.hero { padding: 26px 0 40px; border-bottom: 1px solid var(--border); margin-bottom: 40px; }
.hero h1 {
  font-size: 40px; line-height: 1.2; margin: 0 0 14px; letter-spacing: -0.6px;
}
.hero p { color: var(--text-2); font-size: 16.5px; max-width: 620px; margin: 0 0 22px; }
.hero-stats { display: flex; gap: 30px; flex-wrap: wrap; }
.hero-stats div { display: flex; flex-direction: column; }
.hero-stats strong { font-size: 22px; letter-spacing: -0.3px; }
.hero-stats span { color: var(--muted); font-size: 12.5px; }

.section-title {
  display: flex; align-items: baseline; justify-content: space-between;
  margin: 0 0 18px;
}
.section-title h2 { font-size: 19px; margin: 0; letter-spacing: -0.2px; }
.section-title a { font-size: 13px; color: var(--muted); }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); gap: 18px; }
.card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  display: flex; flex-direction: column; gap: 12px;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.card:hover { border-color: var(--border-strong); box-shadow: var(--shadow); transform: translateY(-1px); }
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.card-head h3 { margin: 0; font-size: 17px; letter-spacing: -0.2px; }
.card-head h3 a { color: var(--text); }
.card-head .count {
  font-size: 12px; color: var(--muted);
  background: var(--bg-soft); border-radius: 999px; padding: 2px 9px; white-space: nowrap;
}
.card-desc { color: var(--text-2); font-size: 13.5px; margin: 0; }
.card-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 2px; }
.card-list li { display: flex; align-items: baseline; justify-content: space-between; gap: 10px; }
.card-list a { color: var(--text-2); font-size: 14px; }
.card-list a:hover { color: var(--accent-text); }
.card-list time { color: var(--muted); font-size: 12px; white-space: nowrap; }
.card-foot { margin-top: auto; padding-top: 6px; border-top: 1px dashed var(--border); }

/* ---------- 列表页 ---------- */
.breadcrumb { display: flex; gap: 8px; align-items: center; color: var(--muted); font-size: 13px; margin-bottom: 18px; flex-wrap: wrap; }
.breadcrumb a { color: var(--text-2); }
.breadcrumb span.sep { opacity: 0.6; }

.page-head { margin-bottom: 30px; }
.page-head h1 { font-size: 30px; margin: 0 0 10px; letter-spacing: -0.5px; }
.page-head p { color: var(--text-2); margin: 0; max-width: 680px; }
.page-head .meta { margin-top: 12px; display: flex; gap: 16px; flex-wrap: wrap; color: var(--muted); font-size: 13px; }

.entry-list { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.entry {
  padding: 18px 0 18px 0; border-bottom: 1px solid var(--border);
  display: flex; gap: 16px; align-items: flex-start;
}
.entry-main { flex: 1; min-width: 0; }
.entry-title { display: flex; align-items: center; gap: 9px; flex-wrap: wrap; }
.entry-title a { font-size: 16.5px; font-weight: 600; color: var(--text); letter-spacing: -0.2px; }
.entry-title a:hover { color: var(--accent-text); }
.entry-title .badge { font-size: 11.5px; color: var(--muted); border: 1px solid var(--border); border-radius: 999px; padding: 0 7px; }
.entry-summary { color: var(--text-2); font-size: 13.8px; margin: 6px 0 0; }
.entry time { color: var(--muted); font-size: 12.5px; white-space: nowrap; padding-top: 4px; }
.entry-children { list-style: none; margin: 10px 0 0; padding: 0 0 0 14px; border-left: 2px solid var(--border); display: flex; flex-direction: column; gap: 4px; }
.entry-children a { color: var(--text-2); font-size: 13.8px; }

.pagination { display: flex; gap: 6px; align-items: center; margin-top: 30px; flex-wrap: wrap; }
.pagination a, .pagination span {
  min-width: 34px; height: 34px; padding: 0 10px;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-radius: 8px;
  font-size: 13.5px; color: var(--text-2); background: var(--panel);
}
.pagination a:hover { border-color: var(--border-strong); color: var(--accent-text); text-decoration: none; }
.pagination .current { background: var(--accent); border-color: var(--accent); color: #fff; }
.pagination .disabled { opacity: 0.45; }

/* ---------- 文档详情 ---------- */
.doc-layout {
  display: grid;
  grid-template-columns: 244px minmax(0, 1fr) 196px;
  gap: 40px;
  align-items: start;
  padding-top: 32px;
}
.doc-sidebar, .doc-toc { position: sticky; top: 90px; max-height: calc(100vh - 110px); overflow: auto; }
.sidebar-head { padding-bottom: 12px; border-bottom: 1px solid var(--border); margin-bottom: 10px; }
.sidebar-head a { color: var(--text); font-weight: 600; font-size: 14.5px; }
.sidebar-head .count { display: block; color: var(--muted); font-size: 12px; margin-top: 3px; }

.tree { display: flex; flex-direction: column; }
.tree-item {
  display: block; padding: 5px 8px; border-radius: 7px;
  color: var(--text-2); font-size: 13.6px; line-height: 1.5;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.tree-item:hover { background: var(--bg-soft); color: var(--text); text-decoration: none; }
.tree-item.is-active { background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.tree-item.depth-1 { padding-left: 20px; font-size: 13.2px; }
.tree-item.depth-2 { padding-left: 34px; font-size: 13px; }
.tree-item.depth-3 { padding-left: 48px; font-size: 13px; }
.tree-item.depth-4 { padding-left: 60px; font-size: 13px; }

.doc-main { min-width: 0; }
.doc-main h1 { font-size: 34px; line-height: 1.25; letter-spacing: -0.7px; margin: 6px 0 14px; }
.doc-meta {
  display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 12.8px;
  padding-bottom: 20px; border-bottom: 1px solid var(--border); margin-bottom: 26px;
}
.doc-meta a { color: var(--text-2); }
.doc-actions { margin-left: auto; display: flex; gap: 8px; }
.doc-actions a { color: var(--accent-text); }

.prose { font-size: 16px; line-height: 1.8; color: var(--text); }
.prose > :first-child { margin-top: 0; }
.prose h1, .prose h2, .prose h3, .prose h4 { letter-spacing: -0.3px; line-height: 1.35; margin: 2em 0 0.7em; scroll-margin-top: 88px; }
.prose h1 { font-size: 27px; }
.prose h2 { font-size: 22px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.prose h3 { font-size: 18px; }
.prose h4 { font-size: 16px; }
.prose p { margin: 0 0 1.1em; overflow-wrap: anywhere; }
.prose a, .prose code { overflow-wrap: anywhere; }
.prose ul, .prose ol { padding-left: 1.5em; margin: 0 0 1.1em; }
.prose li { margin: 0.28em 0; }
.prose li > ul, .prose li > ol { margin: 0.3em 0 0.4em; }
.prose blockquote {
  margin: 1.4em 0; padding: 12px 18px; color: var(--text-2);
  border-left: 3px solid var(--accent); background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
}
.prose blockquote p:last-child { margin-bottom: 0; }
.prose code {
  background: var(--code-bg); border: 1px solid var(--code-border);
  padding: 0.12em 0.4em; border-radius: 5px; font-size: 0.875em;
}
.prose pre {
  position: relative;
  background: var(--code-bg); border: 1px solid var(--code-border);
  border-radius: 10px; padding: 16px 18px; overflow: auto; margin: 1.3em 0;
  line-height: 1.65;
}
.prose pre code { background: none; border: none; padding: 0; font-size: 13.4px; }
.prose table { width: 100%; border-collapse: collapse; margin: 1.3em 0; font-size: 14.4px; }
.prose th, .prose td { border: 1px solid var(--border); padding: 9px 13px; text-align: left; }
.prose th { background: var(--bg-soft); font-weight: 600; }
.prose hr { border: none; border-top: 1px solid var(--border); margin: 2.2em 0; }
.prose img { border-radius: 10px; border: 1px solid var(--border); }
.prose a { text-decoration: underline; text-underline-offset: 3px; text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent); }

.toc-title { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 10px; }
.toc { display: flex; flex-direction: column; border-left: 1px solid var(--border); }
.toc a {
  color: var(--muted); font-size: 13px; padding: 4px 0 4px 12px; margin-left: -1px;
  border-left: 2px solid transparent; line-height: 1.5;
}
.toc a:hover { color: var(--text); text-decoration: none; }
.toc a.active { color: var(--accent-text); border-left-color: var(--accent); }
.toc a.level-3 { padding-left: 24px; font-size: 12.6px; }
.toc a.level-4 { padding-left: 34px; font-size: 12.4px; }

.child-list { margin-top: 40px; padding-top: 22px; border-top: 1px solid var(--border); }
.child-list h2 { font-size: 16px; margin: 0 0 12px; }
.child-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.child-grid a {
  display: block; padding: 10px 13px; border: 1px solid var(--border);
  border-radius: 9px; color: var(--text-2); font-size: 13.8px; background: var(--panel);
}
.child-grid a:hover { border-color: var(--border-strong); color: var(--accent-text); text-decoration: none; }

.pager { display: flex; gap: 12px; margin-top: 40px; }
.pager a {
  flex: 1; padding: 14px 16px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); color: var(--text-2); font-size: 13.6px;
}
.pager a:hover { border-color: var(--border-strong); text-decoration: none; }
.pager a.next { text-align: right; }
.pager .label { display: block; color: var(--muted); font-size: 11.5px; margin-bottom: 3px; }
.pager .title { color: var(--text); font-weight: 600; }

/* ---------- 搜索结果 ---------- */
.search-summary { color: var(--muted); font-size: 13.5px; margin-bottom: 22px; }
.result { padding: 18px 0; border-bottom: 1px solid var(--border); }
.result h3 { margin: 0 0 6px; font-size: 17px; }
.result h3 a { color: var(--text); }
.result h3 a:hover { color: var(--accent-text); }
.result .path { color: var(--muted); font-size: 12.5px; margin-bottom: 6px; }
.result p { margin: 0; color: var(--text-2); font-size: 14px; }
mark { background: var(--mark); color: inherit; padding: 0 2px; border-radius: 3px; }
.empty { padding: 56px 0; text-align: center; color: var(--muted); }
.empty strong { display: block; color: var(--text); font-size: 17px; margin-bottom: 8px; }

/* ---------- 表单与提示 ---------- */
.notice {
  padding: 11px 15px; border-radius: 9px; font-size: 13.8px; margin-bottom: 20px;
  border: 1px solid var(--border); background: var(--panel-2); color: var(--text-2);
}
.notice.ok { border-color: color-mix(in srgb, #16a34a 40%, var(--border)); background: color-mix(in srgb, #16a34a 8%, var(--panel)); color: #15803d; }
.notice.err { border-color: color-mix(in srgb, #dc2626 40%, var(--border)); background: color-mix(in srgb, #dc2626 8%, var(--panel)); color: #b91c1c; }
[data-theme="dark"] .notice.ok { color: #6ee7a0; }
[data-theme="dark"] .notice.err { color: #fca5a5; }

/* ---------- 页脚 ---------- */
.site-footer { border-top: 1px solid var(--border); background: var(--panel-2); padding: 34px 0; margin-top: 40px; }
.footer-inner { display: flex; gap: 30px; flex-wrap: wrap; align-items: flex-start; justify-content: space-between; }
.footer-brand strong { font-size: 15px; }
.footer-brand p { color: var(--muted); font-size: 13px; margin: 5px 0 0; }
.footer-links { display: flex; gap: 18px; flex-wrap: wrap; font-size: 13px; }
.footer-links a { color: var(--text-2); }
.footer-legal { color: var(--muted); font-size: 12.5px; display: flex; flex-direction: column; gap: 4px; text-align: right; }
.footer-legal a { color: var(--muted); }

/* ---------- 后台 ---------- */
.admin-layout { display: grid; grid-template-columns: 206px minmax(0, 1fr); gap: 32px; padding-top: 28px; }
/* 单列断点下，grid item 默认 min-width:auto 会被内容（长代码块、工具条）撑破页面 */
.admin-layout > section { min-width: 0; }
.admin-nav { position: sticky; top: 90px; align-self: start; display: flex; flex-direction: column; gap: 3px; }
.admin-nav a { padding: 8px 12px; border-radius: 8px; color: var(--text-2); font-size: 13.8px; }
.admin-nav a:hover { background: var(--bg-soft); text-decoration: none; color: var(--text); }
.admin-nav a.active { background: var(--accent-soft); color: var(--accent-text); font-weight: 600; }
.admin-nav .group { color: var(--muted); font-size: 11px; letter-spacing: 0.06em; text-transform: uppercase; padding: 14px 12px 5px; }

.admin-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 22px; flex-wrap: wrap; }
.admin-head h1 { font-size: 23px; margin: 0; letter-spacing: -0.4px; }

.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 14px; margin-bottom: 30px; }
.stat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 15px 17px; }
.stat strong { display: block; font-size: 25px; letter-spacing: -0.5px; }
.stat span { color: var(--muted); font-size: 12.5px; }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 22px; margin-bottom: 20px; }
.panel h2 { font-size: 15.5px; margin: 0 0 16px; }

.table { width: 100%; border-collapse: collapse; font-size: 13.8px; }
.table th, .table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.table th { color: var(--muted); font-weight: 500; font-size: 12.5px; }
.table tr:last-child td { border-bottom: none; }
.table .actions { display: flex; gap: 8px; white-space: nowrap; }
.table .actions form { display: inline; }
.table a { color: var(--accent-text); }
.badge { display: inline-block; font-size: 11.5px; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--border); color: var(--muted); }
.badge.pub { color: #15803d; border-color: color-mix(in srgb, #16a34a 35%, var(--border)); background: color-mix(in srgb, #16a34a 8%, transparent); }
[data-theme="dark"] .badge.pub { color: #6ee7a0; }

.form-row { margin-bottom: 16px; }
.form-row label { display: block; font-size: 13px; color: var(--text-2); margin-bottom: 6px; font-weight: 500; }
.form-row .hint { color: var(--muted); font-size: 12px; margin-top: 5px; }
input[type="text"], input[type="search"], input[type="password"], input[type="number"], select, textarea {
  width: 100%; padding: 9px 12px; font-size: 14px; font-family: inherit;
  color: var(--text); background: var(--panel-2);
  border: 1px solid var(--border); border-radius: 8px; outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
textarea { resize: vertical; line-height: 1.65; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 18px; }
.checkbox { display: flex; align-items: center; gap: 8px; font-size: 13.5px; color: var(--text-2); }
.checkbox input { width: 15px; height: 15px; accent-color: var(--accent); }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 16px; font-size: 13.8px; font-family: inherit; font-weight: 500;
  border-radius: 8px; border: 1px solid var(--border); background: var(--panel);
  color: var(--text-2); cursor: pointer; text-decoration: none;
}
.btn:hover { border-color: var(--border-strong); color: var(--text); text-decoration: none; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.06); color: #fff; }
.btn.danger { color: #b91c1c; border-color: color-mix(in srgb, #dc2626 35%, var(--border)); }
.btn.danger:hover { background: color-mix(in srgb, #dc2626 8%, transparent); color: #b91c1c; }
.btn.sm { padding: 5px 10px; font-size: 12.5px; border-radius: 7px; }
.btn-row { display: flex; gap: 10px; align-items: center; margin-top: 8px; flex-wrap: wrap; }


.login-wrap { max-width: 400px; margin: 8vh auto 0; }
.login-card { background: var(--panel); border: 1px solid var(--border); border-radius: 16px; padding: 30px; box-shadow: var(--shadow); }
.login-card h1 { font-size: 21px; margin: 0 0 6px; }
.login-card p.sub { color: var(--muted); font-size: 13px; margin: 0 0 22px; }

/* ---------- 响应式 ---------- */
@media (max-width: 1180px) {
  .doc-layout { grid-template-columns: 220px minmax(0, 1fr); }
  .doc-toc { display: none; }
}
@media (max-width: 1024px) {
  .admin-layout { grid-template-columns: 1fr; }
  .admin-nav { position: static; flex-direction: row; flex-wrap: wrap; gap: 6px; padding-bottom: 14px; border-bottom: 1px solid var(--border); }
  .admin-nav .group { display: none; }
}
@media (max-width: 900px) {
  .doc-layout { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .doc-sidebar { position: static; max-height: none; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; background: var(--panel); }
  .doc-main h1 { font-size: 27px; }

  /* 头部改成两行网格：品牌 + 主题按钮 / 导航 / 搜索，避免挤成一条后被裁掉 */
  .header-inner {
    display: grid; grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "brand toggle" "nav nav" "search search";
    height: auto; padding: 12px 0; gap: 10px;
  }
  .brand { grid-area: brand; }
  .theme-toggle { grid-area: toggle; justify-self: end; }
  .site-nav { grid-area: nav; margin-left: 0; flex-wrap: wrap; }
  .search { grid-area: search; width: 100%; margin-left: 0; }
  .search input { width: 100%; flex: 1 1 auto; }
  .search button { flex: 0 0 auto; }

  .hero h1 { font-size: 30px; }
  .form-grid { grid-template-columns: 1fr; }
  .footer-inner { flex-direction: column; }
  .footer-legal { text-align: left; }
  .prose { font-size: 15.6px; }
}
@media (max-width: 700px) {
  /* 表格列多时别把版面撑破，改成在表格内部横向滚动 */
  .prose table { display: block; width: 100%; overflow-x: auto; }
  .prose thead, .prose tbody { display: table; width: 100%; border-collapse: collapse; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 16px; }
  .entry { gap: 10px; }
  .entry time { display: none; }
  .card { padding: 17px 18px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}

html { scroll-behavior: smooth; }

/* 代码块复制按钮 */
.prose pre .copy-btn {
  position: absolute; top: 8px; right: 8px;
  padding: 3px 9px; font-size: 11.5px; font-family: var(--font-sans);
  color: var(--muted); background: var(--panel);
  border: 1px solid var(--border); border-radius: 6px;
  cursor: pointer; opacity: 0; transition: opacity 0.15s, color 0.15s;
}
.prose pre:hover .copy-btn { opacity: 1; }
.prose pre .copy-btn:hover { color: var(--accent-text); border-color: var(--border-strong); }


/* 登录页：i3ai 账号 / 令牌 / 本地账号三种入口 */
.login-alt { margin-top: 16px; border-top: 1px dashed var(--border); padding-top: 12px; }
.login-alt summary {
  cursor: pointer; font-size: 13px; color: var(--text-2); list-style: none;
  display: flex; align-items: center; gap: 6px;
}
.login-alt summary::-webkit-details-marker { display: none; }
.login-alt summary::before { content: "＋"; color: var(--muted); font-size: 12px; }
.login-alt[open] summary::before { content: "－"; }
.login-alt summary:hover { color: var(--text); }
.login-alt > form, .login-alt > p { margin-top: 12px; }
.login-foot { text-align: center; color: var(--muted); font-size: 12.5px; margin-top: 18px; line-height: 1.7; }

.account-card { display: flex; align-items: center; gap: 14px; }
.account-avatar {
  width: 48px; height: 48px; border-radius: 50%; object-fit: cover;
  border: 1px solid var(--border); background: var(--bg-soft);
}
.account-avatar--empty {
  display: grid; place-items: center; font-size: 19px; font-weight: 600;
  color: var(--accent-text); background: var(--accent-soft);
}
.account-name { font-size: 16px; font-weight: 600; }
.account-sub { color: var(--muted); font-size: 12.5px; margin-top: 2px; }


/* 编辑器工具条（图片上传） */


/* ---------- 评论区 ---------- */
.comments { margin-top: 44px; padding-top: 26px; border-top: 1px solid var(--border); }
.comments-title { font-size: 17px; margin: 0 0 16px; letter-spacing: -0.2px; }
.comment-form { margin-bottom: 22px; }
.comment-form textarea {
  width: 100%; padding: 12px 14px; font-size: 14.5px; line-height: 1.7;
  color: var(--text); background: var(--panel-2);
  border: 1px solid var(--border); border-radius: 10px; resize: vertical; outline: none;
}
.comment-form textarea:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.comment-form-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 10px; }
.comment-form-foot .hint { color: var(--muted); font-size: 12.5px; }
.comment-login { color: var(--muted); font-size: 13.8px; margin: 0 0 18px; }
.comment-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 18px; }
.comment { display: flex; gap: 12px; }
.comment-avatar {
  width: 34px; height: 34px; border-radius: 50%; flex: 0 0 auto;
  object-fit: cover; border: 1px solid var(--border); background: var(--bg-soft);
}
.comment-avatar--empty {
  display: grid; place-items: center; font-size: 14px; font-weight: 600;
  color: var(--accent-text); background: var(--accent-soft);
}
.comment-main { min-width: 0; flex: 1; }
.comment-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 3px; }
.comment-head strong { font-size: 13.6px; }
.comment-head time { color: var(--muted); font-size: 12px; }
.comment-body { margin: 0; font-size: 14.4px; line-height: 1.75; white-space: pre-wrap; overflow-wrap: anywhere; }
.comment-empty { color: var(--muted); font-size: 13.5px; margin: 0; }


/* ---------- 代码块：语言标签 + 语法着色 ---------- */
.prose pre[data-lang] { padding-top: 32px; }
.prose pre[data-lang]::before {
  content: attr(data-lang);
  position: absolute; top: 8px; left: 13px;
  font-family: var(--font-sans); font-size: 11px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
  pointer-events: none; user-select: none;
}
.tok-kw { color: var(--tok-kw); }
.tok-ty { color: var(--tok-ty); }
.tok-str { color: var(--tok-str); }
.tok-num { color: var(--tok-num); }
.tok-cm { color: var(--tok-cm); font-style: italic; }
.tok-lit { color: var(--tok-lit); }
.tok-key { color: var(--tok-key); }
.tok-tag { color: var(--tok-tag); }
.tok-attr { color: var(--tok-attr); }
.tok-var { color: var(--tok-var); }
.tok-punc { color: var(--tok-punc); }
.tok-ins { color: var(--tok-ins); }
.tok-del { color: var(--tok-del); }
.tok-meta { color: var(--tok-meta); }

/* ---------- 正文图片：点击放大 ---------- */
.prose img { cursor: zoom-in; }
.lightbox {
  position: fixed; inset: 0; z-index: 90;
  display: flex; align-items: center; justify-content: center;
  padding: 24px; background: rgba(9, 12, 18, 0.82);
  backdrop-filter: blur(4px); cursor: zoom-out;
  opacity: 0; transition: opacity 0.18s ease;
}
.lightbox.is-open { opacity: 1; }
.lightbox img {
  max-width: 100%; max-height: 100%;
  border-radius: 10px; box-shadow: 0 30px 80px -20px rgba(0, 0, 0, 0.6);
  cursor: default;
}
body.lightbox-open { overflow: hidden; }