/* ============================================================
   姜三点笔 · 个人总站 — 编辑级视觉系统
   暖纸 / 墨色 / 黄铜 · 宋体标题 · 发丝线 · 出版物式排版
   ============================================================ */

:root {
  --paper: #f5f2ec;
  --paper-2: #edeae1;
  --card: #fbfaf6;
  --ink: #22252a;
  --ink-2: #4c5158;
  --muted: #8b8f97;
  --line: rgba(34, 37, 42, 0.16);
  --line-soft: rgba(34, 37, 42, 0.08);
  --brass: #a87f2d;
  --brass-deep: #86651f;
  --brass-soft: rgba(168, 127, 45, 0.09);
  --serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--brass); color: #fff; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: rgba(34, 37, 42, 0.18); border-radius: 5px; border: 2px solid var(--paper); }
::-webkit-scrollbar-thumb:hover { background: rgba(34, 37, 42, 0.3); }

.wrap { max-width: 1024px; margin: 0 auto; padding: 0 28px; }

a { color: inherit; }

/* ---------- 顶栏：粘性毛玻璃 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(245, 242, 236, 0.82);
  backdrop-filter: blur(12px) saturate(1.1);
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
  border-bottom: 1px solid var(--line-soft);
  transition: box-shadow 0.25s var(--ease);
}
body.scrolled .site-header { box-shadow: 0 6px 24px rgba(34, 37, 42, 0.08); }

.nav-wrap { display: flex; align-items: center; gap: 30px; padding: 15px 28px; }

.brand {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 2px;
  text-decoration: none;
  white-space: nowrap;
}
.brand:hover { color: var(--brass-deep); }

.nav { display: flex; gap: 4px; flex-wrap: wrap; margin-left: auto; }
.nav-link {
  position: relative;
  color: var(--ink-2);
  text-decoration: none;
  font-size: 14px;
  letter-spacing: 1px;
  padding: 7px 12px;
  transition: color 0.15s var(--ease);
  white-space: nowrap;
}
.nav-link::after {
  content: "";
  position: absolute;
  left: 12px; right: 12px; bottom: 2px;
  height: 2px;
  background: var(--brass);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.22s var(--ease);
}
.nav-link:hover { color: var(--ink); }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: var(--brass-deep); font-weight: 600; }
.nav-link.active::after { transform: scaleX(1); }

main { padding-bottom: 90px; min-height: 62vh; }

/* ---------- 首屏：宣言 ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero {
  position: relative;
  padding: 96px 0 64px;
  border-bottom: 1px solid var(--line);
}
.hero > * { animation: fadeUp 0.8s var(--ease) both; }
.hero .manifesto { animation-delay: 0.06s; }
.hero .hero-tag { animation-delay: 0.18s; }
.hero .hero-cta { animation-delay: 0.28s; }
.hero .hero-meta { animation-delay: 0.38s; }

.hero-deco {
  position: absolute;
  top: 96px; right: 0;
  writing-mode: vertical-rl;
  font-family: var(--serif);
  font-size: 15px;
  letter-spacing: 12px;
  color: rgba(34, 37, 42, 0.18);
  user-select: none;
  pointer-events: none;
}

.manifesto {
  margin: 0 0 26px;
  max-width: 13em;
  font-family: var(--serif);
  font-size: clamp(36px, 6.4vw, 64px);
  font-weight: 900;
  line-height: 1.32;
  letter-spacing: 1px;
  color: var(--ink);
}
.manifesto .hl {
  font-style: normal;
  color: var(--brass);
  position: relative;
}

.hero-tag {
  margin: 0 0 40px;
  font-size: 16px;
  letter-spacing: 3px;
  color: var(--muted);
}

.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }
.cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 2px;
  text-decoration: none;
  transition: all 0.2s var(--ease);
}
.cta .row-arrow { transition: transform 0.2s var(--ease); }
.cta:hover .row-arrow { transform: translateX(4px); }
.cta-primary { background: var(--ink); color: var(--paper); }
.cta-primary:hover { background: var(--brass-deep); }
.cta-ghost { color: var(--ink); border: 1px solid var(--line); }
.cta-ghost:hover { border-color: var(--ink); background: var(--card); }

.hero-meta {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  font-size: 12.5px;
  letter-spacing: 2px;
  color: var(--muted);
}
.hero-meta span { display: inline-flex; align-items: center; }
.hero-meta span + span::before {
  content: "";
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--brass);
  margin: 0 16px;
}

/* ---------- 首页编号区块 ---------- */
.home-sec { padding: 54px 0; border-bottom: 1px solid var(--line-soft); }
.home-sec:last-of-type { border-bottom: none; }

.sec-grid { display: grid; grid-template-columns: 180px 1fr; gap: 40px; }

.sec-side { display: flex; flex-direction: column; gap: 6px; }
.sec-num {
  font-family: var(--serif);
  font-size: 34px;
  font-weight: 400;
  color: rgba(34, 37, 42, 0.22);
  line-height: 1;
}
.sec-label {
  font-size: 13px;
  letter-spacing: 4px;
  font-weight: 600;
  color: var(--brass);
}

.sec-body { min-width: 0; }

.intro p { margin: 0 0 15px; font-size: 15.5px; color: var(--ink-2); text-align: justify; }
.intro p:last-child { margin-bottom: 0; }

/* 如何运作 */
.pipe { border-top: 1px solid var(--line-soft); }
.pipe-row {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 20px 4px;
  border-bottom: 1px solid var(--line-soft);
  align-items: baseline;
}
.pipe-idx {
  font-family: var(--serif);
  font-size: 22px;
  color: var(--brass);
}
.pipe-row h3 { margin: 0 0 4px; font-family: var(--serif); font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.pipe-row p { margin: 0; font-size: 14px; color: var(--muted); }

/* 首页外链行 */
.home-ext-row { display: flex; gap: 12px; flex-wrap: wrap; }
.home-ext {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  letter-spacing: 1px;
  text-decoration: none;
  color: var(--ink-2);
  border: 1px solid var(--line);
  padding: 9px 18px;
  transition: all 0.18s var(--ease);
}
.home-ext:hover { border-color: var(--brass); color: var(--brass-deep); background: var(--brass-soft); }
.home-ext-muted { color: var(--muted); border-style: dashed; cursor: default; }
.home-ext-muted:hover { border-color: var(--line); color: var(--muted); background: transparent; }

/* ---------- reveal 动效 ---------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.65s var(--ease), transform 0.65s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* ---------- 频道页头 ---------- */
.back {
  background: none;
  border: none;
  padding: 0;
  margin: 34px 0 18px;
  font-size: 13px;
  letter-spacing: 1px;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.15s var(--ease);
}
.back:hover { color: var(--brass-deep); }

.channel-head { padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.ch-num {
  display: block;
  font-size: 12.5px;
  letter-spacing: 4px;
  color: var(--brass);
  font-weight: 600;
  margin-bottom: 10px;
}
.channel-head h2 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 38px;
  font-weight: 900;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.channel-head p { margin: 0; color: var(--muted); font-size: 14.5px; max-width: 56em; }

.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-family: var(--sans);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 2px;
  color: var(--muted);
}
.status-dot i { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }
.status-dot.live i { background: #3d8b5f; box-shadow: 0 0 0 3px rgba(61, 139, 95, 0.15); }
.status-dot.build i { background: var(--brass); box-shadow: 0 0 0 3px var(--brass-soft); }

/* ---------- 编辑式仪表盘 ---------- */
.stat-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 34px 0 10px;
  padding: 26px 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}
.stat { padding: 0 26px; border-left: 1px solid var(--line-soft); }
.stat:first-child { padding-left: 0; border-left: none; }
.stat-num {
  font-family: var(--serif);
  font-size: 46px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--ink);
}
.stat-label { margin-top: 4px; font-size: 12px; letter-spacing: 3px; color: var(--muted); }

/* ---------- 子区块 ---------- */
.sub-section { margin-top: 46px; }
.sub-title {
  margin: 0 0 18px;
  font-family: var(--serif);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 14px;
}
.sub-title::after { content: ""; flex: 1; height: 1px; background: var(--line-soft); }

/* ---------- 下划线式搜索 ---------- */
.search {
  width: 100%;
  padding: 12px 2px;
  margin-bottom: 8px;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  font-size: 15px;
  font-family: var(--sans);
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s var(--ease);
}
.search::placeholder { color: var(--muted); letter-spacing: 1px; }
.search:focus { border-bottom-color: var(--brass); }

/* ---------- 行式列表 ---------- */
.rows { border-top: 1px solid var(--line-soft); }
.row {
  display: grid;
  grid-template-columns: 52px 1fr auto;
  gap: 22px;
  align-items: start;
  padding: 22px 6px;
  border-bottom: 1px solid var(--line-soft);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s var(--ease), padding 0.18s var(--ease);
}
.row:hover { background: linear-gradient(90deg, var(--brass-soft), transparent 70%); }
.row-idx {
  font-family: var(--serif);
  font-size: 15px;
  color: rgba(34, 37, 42, 0.3);
  padding-top: 5px;
}
.row-main { min-width: 0; }
.row-main h3 {
  margin: 0 0 5px;
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.5px;
  line-height: 1.45;
  transition: color 0.15s var(--ease);
}
.row:hover .row-main h3 { color: var(--brass-deep); }
.row-summary {
  margin: 0;
  font-size: 13.5px;
  color: var(--muted);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.row-kicker {
  display: inline-block;
  font-size: 11.5px;
  letter-spacing: 2px;
  color: var(--brass);
  font-weight: 600;
  margin-bottom: 6px;
}
.row-side {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 5px;
}
.row-date { font-size: 12.5px; color: var(--muted); letter-spacing: 1px; text-align: right; line-height: 1.6; white-space: nowrap; }
.row-arrow { color: var(--brass); font-size: 16px; transition: transform 0.18s var(--ease); }
.row:hover .row-arrow { transform: translateX(5px); }
.row-muted { cursor: default; opacity: 0.65; }
.row-muted:hover { background: none; }

.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 9px; }
.tag {
  font-size: 11.5px;
  letter-spacing: 1px;
  color: var(--brass-deep);
  border: 1px solid rgba(168, 127, 45, 0.35);
  padding: 2px 10px;
  border-radius: 999px;
}

/* ---------- 建设中区块 ---------- */
.building-block { padding: 34px 6px; }
.bb-kicker {
  display: inline-block;
  font-size: 12.5px;
  letter-spacing: 4px;
  font-weight: 600;
  color: var(--brass);
  margin-bottom: 14px;
}
.building-block p { margin: 0 0 12px; color: var(--ink-2); font-size: 14.5px; max-width: 60em; }
.bb-hint { color: var(--muted) !important; font-size: 13px !important; }
.building-block code { background: var(--paper-2); padding: 1px 7px; border-radius: 4px; font-size: 13px; }

/* ---------- 文章详情 ---------- */
.article { max-width: 740px; margin: 0 auto; }
.article-head { padding-bottom: 26px; border-bottom: 1px solid var(--line); margin-bottom: 34px; }
.article-head h1 {
  margin: 0 0 14px;
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 1px;
}
.detail-meta { font-size: 13px; letter-spacing: 1px; color: var(--muted); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.dm-sep { color: var(--line); }

.prose {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 2.0;
  color: var(--ink-2);
  text-align: justify;
}
.prose h1, .prose h2, .prose h3, .prose h4 { color: var(--ink); letter-spacing: 1px; line-height: 1.5; }
.prose h1 { font-size: 26px; margin: 34px 0 14px; }
.prose h2 { font-size: 22px; margin: 30px 0 12px; padding-left: 14px; border-left: 3px solid var(--brass); }
.prose h3 { font-size: 18px; margin: 26px 0 10px; }
.prose p { margin: 0 0 16px; }
.prose ul, .prose ol { padding-left: 1.5em; margin: 0 0 16px; }
.prose li { margin-bottom: 6px; }
.prose strong { color: var(--ink); }
.prose blockquote {
  margin: 20px 0;
  padding: 14px 20px;
  border-left: 3px solid var(--brass);
  background: var(--brass-soft);
  color: var(--ink-2);
}
.prose pre { background: var(--paper-2); padding: 16px; overflow: auto; font-size: 13.5px; border-radius: 6px; }
.prose code { background: var(--paper-2); padding: 2px 6px; border-radius: 4px; font-size: 0.88em; font-family: "SFMono-Regular", Consolas, monospace; }
.prose pre code { background: none; padding: 0; }
.prose a { color: var(--brass-deep); text-decoration: underline; text-underline-offset: 3px; }
.prose hr { border: none; border-top: 1px solid var(--line-soft); margin: 30px 0; }
.prose table { border-collapse: collapse; width: 100%; margin: 18px 0; font-size: 14.5px; }
.prose th, .prose td { border: 1px solid var(--line-soft); padding: 8px 12px; text-align: left; }
.prose th { background: var(--paper-2); font-weight: 600; }

.article-foot { margin-top: 40px; padding-top: 26px; border-top: 1px solid var(--line-soft); }
.download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 10px 22px;
  font-size: 13.5px;
  letter-spacing: 2px;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.18s var(--ease);
}
.download:hover { border-color: var(--ink); background: var(--ink); color: var(--paper); }

.section-title { font-family: var(--serif); font-size: 18px; font-weight: 700; letter-spacing: 1px; margin: 0 0 14px; }
.artifacts { display: flex; flex-wrap: wrap; gap: 10px; }
.artifact {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  background: transparent;
  font-family: var(--sans);
}
.artifact-link { color: var(--brass-deep); border-color: rgba(168, 127, 45, 0.4); cursor: pointer; transition: all 0.18s var(--ease); }
.artifact-link:hover { background: var(--brass-soft); border-color: var(--brass); }
.artifact-missing { color: var(--muted); border-style: dashed; }

.status { color: var(--muted); font-size: 14px; letter-spacing: 1px; text-align: center; margin-top: 26px; }

/* ---------- 深色页脚 ---------- */
.site-footer {
  background: #1e2126;
  color: rgba(245, 242, 236, 0.62);
  padding: 58px 0 30px;
}
.f-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr;
  gap: 44px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(245, 242, 236, 0.1);
}
.f-name {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 900;
  letter-spacing: 3px;
  color: var(--paper);
  margin-bottom: 10px;
}
.f-brand p { margin: 0; font-size: 13.5px; letter-spacing: 1px; }
.f-col h4 {
  margin: 4px 0 16px;
  font-size: 12px;
  letter-spacing: 4px;
  font-weight: 600;
  color: var(--brass);
}
.f-col a, .f-col .f-dim {
  display: block;
  font-size: 14px;
  padding: 5px 0;
  text-decoration: none;
  color: rgba(245, 242, 236, 0.62);
  transition: color 0.15s var(--ease), transform 0.15s var(--ease);
}
.f-col a:hover { color: var(--paper); transform: translateX(4px); }
.f-col .f-dim { opacity: 0.45; }
.f-base {
  padding-top: 24px;
  font-size: 12px;
  letter-spacing: 1.5px;
  color: rgba(245, 242, 236, 0.38);
}

/* ---------- 响应式 ---------- */
@media (max-width: 760px) {
  .wrap { padding: 0 20px; }
  .nav-wrap { gap: 14px; padding: 13px 20px; }
  .nav { margin-left: 0; }
  .hero { padding: 64px 0 48px; }
  .hero-deco { display: none; }
  .manifesto { font-size: clamp(30px, 9vw, 42px); }
  .sec-grid { grid-template-columns: 1fr; gap: 18px; }
  .sec-side { flex-direction: row; align-items: baseline; gap: 12px; }
  .sec-num { font-size: 24px; }
  .stat-row { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .stat { padding: 0 18px; }
  .stat:nth-child(odd) { padding-left: 0; border-left: none; }
  .stat-num { font-size: 36px; }
  .channel-head h2 { font-size: 30px; }
  .row { grid-template-columns: 1fr; gap: 8px; }
  .row-idx { display: none; }
  .row-side { justify-content: space-between; padding-top: 0; }
  .article-head h1 { font-size: 27px; }
  .f-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ---------- 知识库底座 kbmap ---------- */
.kb-headsec { padding: 26px 0 8px; }
.kb-lede { margin: 0 0 18px; font-size: 15px; color: var(--ink-2); max-width: 60em; }
.kb-toggles { display: flex; justify-content: space-between; align-items: center; gap: 14px; flex-wrap: wrap; }
.kb-toggle { display: inline-flex; border: 1px solid var(--line); }
.kb-viewtoggle { margin-bottom: 18px; }
.kb-tab { background: none; border: none; padding: 8px 16px; font-size: 13px; letter-spacing: 1px; color: var(--ink-2); cursor: pointer; font-family: var(--sans); transition: all 0.18s var(--ease); }
.kb-tab.active { background: var(--ink); color: var(--paper); }
.kb-mode { display: inline-flex; align-items: center; gap: 8px; background: none; border: 1px solid var(--line); padding: 8px 16px; font-size: 13px; letter-spacing: 1px; color: var(--ink-2); cursor: pointer; transition: all 0.18s var(--ease); }
.kb-mode:hover { border-color: var(--brass); color: var(--brass-deep); }
.kb-mode-dot { width: 8px; height: 8px; border-radius: 50%; background: #3d8b5f; }
body.kb-eng .kb-mode-dot { background: var(--brass); }

.kb-eng-only { display: none; }
body.kb-eng .kb-eng-only { display: block; }
body.kb-eng .kb-kv.kb-eng-only { display: grid; }
.kb-hide { display: none !important; }

/* 导览 */
.kb-tour { border-top: 1px solid var(--line-soft); }
.kb-step { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 22px 4px; border-bottom: 1px solid var(--line-soft); align-items: start; }
.kb-step-num { font-family: var(--serif); font-size: 24px; color: var(--brass); line-height: 1.2; }
.kb-step-body h3 { margin: 0 0 6px; font-family: var(--serif); font-size: 19px; font-weight: 700; letter-spacing: 1px; }
.kb-why { margin: 0 0 10px; font-size: 15px; color: var(--ink-2); }
.kb-verify, .kb-engline { margin: 6px 0 0; font-size: 13.5px; color: var(--muted); }
.kb-tag { display: inline-block; font-size: 11px; letter-spacing: 2px; color: var(--brass-deep); border: 1px solid var(--brass); padding: 1px 8px; margin-right: 8px; }
.kb-tag-eng { color: var(--ink-2); border-color: var(--line); }
body.kb-eng .kb-engline { color: var(--ink-2); }

/* 流转视图 */
.kb-flow { padding-top: 8px; }
.kb-layer { display: grid; grid-template-columns: 56px 1fr; gap: 20px; align-items: start; padding: 18px; border: 1px solid var(--line); background: var(--card); }
.kb-layer-num { font-family: var(--serif); font-size: 24px; color: var(--brass); line-height: 1.2; }
.kb-layer-body h4 { margin: 0 0 4px; font-family: var(--serif); font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.kb-layer-body p { margin: 8px 0 0; font-size: 13.5px; color: var(--muted); }
.kb-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.kb-chip { font-size: 12.5px; letter-spacing: 1px; color: var(--ink-2); border: 1px solid var(--line); padding: 3px 12px; background: var(--paper); }
.kb-edge { display: flex; align-items: center; gap: 10px; padding: 8px 0 8px 74px; }
.kb-edge-label { font-size: 12.5px; letter-spacing: 1px; color: var(--muted); }
.kb-edge-arrow { color: var(--brass); font-size: 15px; }

.kb-vault { border: 1px solid var(--brass); background: var(--brass-soft); padding: 18px; }
.kb-vault-head { display: flex; align-items: baseline; gap: 16px; margin-bottom: 14px; }
.kb-vault-head h4 { margin: 0; font-family: var(--serif); font-size: 18px; font-weight: 700; letter-spacing: 1px; }
.kb-vault-grid { display: grid; grid-template-columns: 1fr 180px; gap: 16px; }
.kb-vault-subs { display: flex; flex-direction: column; gap: 10px; }
.kb-sub { background: var(--card); border: 1px solid var(--line-soft); padding: 12px 14px; }
.kb-sub-head { display: flex; align-items: baseline; gap: 10px; }
.kb-sub-head b { font-family: var(--serif); font-size: 15px; color: var(--ink); }
.kb-sub-head span { font-size: 12px; letter-spacing: 1px; color: var(--brass-deep); }
.kb-sub-desc { margin-top: 4px; font-size: 13px; color: var(--ink-2); }
.kb-sub-rel { margin-top: 4px; font-size: 12px; color: var(--muted); }
.kb-vault-side { display: flex; flex-direction: column; gap: 8px; }
.kb-side-item { font-size: 12.5px; color: var(--ink-2); border: 1px dashed var(--line); padding: 8px 12px; background: var(--card); }

/* 结构视图 */
.kb-group { margin-bottom: 26px; }
.kb-group-title { margin: 0 0 14px; font-family: var(--serif); font-size: 17px; font-weight: 700; letter-spacing: 1px; color: var(--ink); display: flex; align-items: center; gap: 14px; }
.kb-group-title::after { content: ""; flex: 1; height: 1px; background: var(--line-soft); }
.kb-cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.kb-card { width: 100%; text-align: left; background: var(--card); border: 1px solid var(--line); padding: 16px 18px; cursor: pointer; font-family: var(--sans); transition: border-color 0.18s var(--ease), background 0.18s var(--ease); position: relative; }
.kb-card:hover { border-color: var(--brass); background: var(--brass-soft); }
.kb-card-top { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 8px; }
.kb-path { font-size: 12px; letter-spacing: 1px; color: var(--muted); }
.kb-badge { font-size: 11px; letter-spacing: 2px; padding: 1px 8px; white-space: nowrap; }
.kb-badge.live { color: #3d8b5f; border: 1px solid rgba(61, 139, 95, 0.4); }
.kb-badge.seed { color: var(--brass-deep); border: 1px dashed var(--brass); }
.kb-card h4 { margin: 0 0 6px; font-family: var(--serif); font-size: 17px; font-weight: 700; letter-spacing: 1px; }
.kb-func { margin: 0; font-size: 14px; color: var(--ink-2); }
.kb-card-meta { margin-top: 8px; font-size: 12.5px; color: var(--brass-deep); }
.kb-card-hint { position: absolute; right: 14px; bottom: 12px; font-size: 11px; letter-spacing: 1px; color: var(--muted); }
.kb-card.open .kb-card-hint { display: none; }
.kb-card-detail { display: none; margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--line-soft); }
.kb-card.open .kb-card-detail { display: block; }
.kb-kv { display: grid; grid-template-columns: 84px 1fr; gap: 10px; padding: 3px 0; font-size: 13px; }
.kb-kv span { color: var(--muted); letter-spacing: 1px; }
.kb-kv b { font-weight: 500; color: var(--ink); }
.kb-card-more { display: inline-block; margin-top: 8px; font-size: 11px; letter-spacing: 1px; color: var(--brass-deep); }

.kb-honesty { margin: 30px 0 50px; padding: 16px 18px; border-left: 2px solid var(--brass); background: var(--brass-soft); font-size: 13.5px; color: var(--ink-2); max-width: 64em; }

@media (max-width: 720px) {
  .kb-cards { grid-template-columns: 1fr; }
  .kb-vault-grid { grid-template-columns: 1fr; }
  .kb-vault-side { flex-direction: row; flex-wrap: wrap; }
  .kb-edge { padding-left: 20px; }
}

/* ---------- 知识库底座：可点详情 + 抽屉 ---------- */
.kb-click { cursor: pointer; }
.kb-count { font-style: normal; margin-left: 8px; font-size: 12px; letter-spacing: 1px; color: var(--brass-deep); border: 1px solid var(--brass); padding: 0 7px; border-radius: 8px; }
.kb-card-hint { position: static; display: inline-block; margin-top: 10px; }
.kb-steplink { display: inline-block; margin-top: 10px; background: none; border: none; padding: 0 0 1px; font-size: 13px; letter-spacing: 1px; color: var(--brass-deep); cursor: pointer; font-family: var(--sans); border-bottom: 1px solid var(--brass); }
.kb-steplink:hover { color: var(--ink); border-bottom-color: var(--ink); }
.kb-filter { margin-bottom: 18px; }

body.kb-lock { overflow: hidden; }
.kb-overlay { position: fixed; inset: 0; background: rgba(34, 37, 42, 0.42); opacity: 0; pointer-events: none; transition: opacity 0.25s var(--ease); z-index: 60; }
.kb-overlay.open { opacity: 1; pointer-events: auto; }
.kb-drawer { position: fixed; top: 0; right: 0; height: 100vh; width: min(440px, 94vw); background: var(--paper); border-left: 1px solid var(--line); transform: translateX(102%); transition: transform 0.28s var(--ease); z-index: 61; display: flex; flex-direction: column; }
.kb-drawer.open { transform: translateX(0); }
.kb-drawer-bar { display: flex; justify-content: space-between; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--line-soft); }
.kb-dback { background: none; border: none; padding: 0; font-size: 13px; letter-spacing: 1px; color: var(--brass-deep); cursor: pointer; font-family: var(--sans); visibility: hidden; }
.kb-dback:hover { color: var(--ink); }
.kb-dclose { background: none; border: none; padding: 0; font-size: 26px; line-height: 1; color: var(--ink-2); cursor: pointer; }
.kb-dclose:hover { color: var(--brass-deep); }
.kb-drawer-body { overflow-y: auto; padding: 22px 22px 40px; }
.kb-dhead { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.kb-dlayer { font-size: 12px; letter-spacing: 2px; color: var(--brass); }
.kb-dname { margin: 10px 0 4px; font-family: var(--serif); font-size: 24px; font-weight: 700; letter-spacing: 1px; }
.kb-dpath { font-size: 12.5px; letter-spacing: 1px; color: var(--muted); }
.kb-dmeta { margin-top: 6px; font-size: 12.5px; color: var(--brass-deep); }
.kb-dsec { margin-top: 20px; }
.kb-dsec h5 { margin: 0 0 6px; font-family: var(--serif); font-size: 14px; font-weight: 700; letter-spacing: 2px; color: var(--brass-deep); }
.kb-dsec p { margin: 0; font-size: 14px; color: var(--ink-2); }
.kb-rel-row { display: flex; flex-direction: column; gap: 8px; }
.kb-rel { display: flex; justify-content: space-between; align-items: center; gap: 10px; width: 100%; text-align: left; background: var(--card); border: 1px solid var(--line); padding: 10px 14px; font-size: 14px; color: var(--ink); cursor: pointer; font-family: var(--sans); transition: all 0.18s var(--ease); }
.kb-rel:hover { border-color: var(--brass); background: var(--brass-soft); color: var(--brass-deep); }

/* ---------- 首页头像（渐变圆环 + 点击上传） ---------- */
.hero-grid { display: grid; grid-template-columns: 1fr auto; gap: 56px; align-items: center; }
.hero-main { min-width: 0; }
.hero-side { display: flex; align-items: center; justify-content: center; }
.avatar { position: relative; display: inline-block; flex: none; width: 248px; height: 248px; margin: 0; padding: 0; border: none; background: none; cursor: pointer; border-radius: 50%; transition: transform 0.25s var(--ease); }
.avatar:hover { transform: scale(1.03); }
.avatar-ring { position: absolute; inset: 0; border-radius: 50%; background: conic-gradient(from 180deg, #f6c453, #ef9f27, #d9727e, #9b6dd6, #5b8dd9, #4fb0a5, #f6c453); }
.avatar-inner { position: absolute; inset: 8px; border-radius: 50%; overflow: hidden; background: linear-gradient(135deg, #efe6d2, #e0cd9f); display: flex; align-items: center; justify-content: center; border: 4px solid var(--paper); }
.avatar-inner img { width: 100%; height: 100%; object-fit: cover; display: block; }
.avatar-mono { font-family: var(--serif); font-size: 96px; color: var(--brass-deep); line-height: 1; }
.avatar::after { content: "更换头像"; position: absolute; left: 50%; bottom: -10px; transform: translateX(-50%); font-size: 11px; letter-spacing: 2px; color: var(--paper); background: var(--ink); padding: 3px 12px; border-radius: 11px; opacity: 0; white-space: nowrap; transition: opacity 0.2s var(--ease); pointer-events: none; }
.avatar:hover::after { opacity: 1; }
@media (prefers-reduced-motion: no-preference) {
  .avatar-ring { animation: avatarSpin 16s linear infinite; }
}
@keyframes avatarSpin { to { transform: rotate(360deg); } }
@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 30px; }
  .hero-side { order: -1; justify-content: flex-start; }
  .avatar { width: 152px; height: 152px; }
  .avatar-inner { inset: 6px; border-width: 3px; }
  .avatar-mono { font-size: 60px; }
}

/* ---------- 伴读频道（companion） ---------- */
.cp-src { margin: 0; font-size: 12.5px; letter-spacing: 1px; color: var(--muted); }
.cp-list { border-top: 1px solid var(--line-soft); }
.cp-book { border-bottom: 1px solid var(--line-soft); }
.cp-head { display: grid; grid-template-columns: 48px 1fr auto; gap: 18px; align-items: baseline; width: 100%; text-align: left; background: none; border: none; padding: 20px 6px; cursor: pointer; font-family: var(--sans); transition: background 0.18s var(--ease); }
.cp-head:hover { background: var(--brass-soft); }
.cp-idx { font-family: var(--serif); font-size: 20px; color: var(--brass); }
.cp-main { min-width: 0; }
.cp-title { display: block; font-family: var(--serif); font-size: 18px; font-weight: 700; letter-spacing: 1px; color: var(--ink); }
.cp-meta { display: block; margin-top: 5px; font-size: 13px; color: var(--muted); letter-spacing: 1px; }
.cp-open { font-size: 12.5px; letter-spacing: 1px; color: var(--brass-deep); white-space: nowrap; }
.cp-body { display: none; padding: 4px 6px 26px 66px; }
.cp-book.open .cp-body { display: block; }
.cp-book.open .cp-open .row-arrow { display: inline-block; transform: rotate(90deg); }
.cp-sec { margin-top: 14px; }
.cp-sec-t { margin: 0 0 10px; font-family: var(--serif); font-size: 14px; font-weight: 700; letter-spacing: 2px; color: var(--brass-deep); }
.cp-hl { margin: 0 0 12px; padding: 12px 16px; border-left: 2px solid var(--brass); background: var(--card); font-size: 14.5px; line-height: 1.7; color: var(--ink-2); }
.cp-ch { display: block; margin-top: 6px; font-style: normal; font-size: 12px; letter-spacing: 1px; color: var(--muted); }
.cp-th { margin: 0 0 10px; padding: 10px 14px; border: 1px solid var(--line-soft); background: var(--paper); font-size: 14px; line-height: 1.7; color: var(--ink-2); }
.cp-th-mark { display: inline-block; margin-right: 8px; font-size: 11px; letter-spacing: 2px; color: var(--brass-deep); border: 1px solid var(--brass); padding: 0 7px; }
@media (max-width: 720px) {
  .cp-head { grid-template-columns: 36px 1fr; gap: 12px; }
  .cp-open { display: none; }
  .cp-body { padding-left: 48px; }
}

/* ---------- 调研文章 / AI 伴考 频道 ---------- */
.flow { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 14px 0 6px; }
.flow-step { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--ink-2); letter-spacing: 1px; }
.flow-step i { font-style: normal; font-family: var(--serif); font-size: 12px; color: var(--brass); border: 1px solid rgba(168,127,45,.4); border-radius: 50%; width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; }
.flow-arrow { color: var(--muted); font-size: 13px; }

.art-badge { display: inline-block; font-size: 11px; letter-spacing: 1.5px; padding: 2px 9px; border-radius: 999px; white-space: nowrap; }
.art-badge.pub { color: #fff; background: var(--brass); }
.art-badge.draft { color: var(--brass-deep); border: 1px solid rgba(168,127,45,.5); }
.art-badge.plan { color: var(--muted); border: 1px solid var(--line-soft); }

.rv-marks { display: inline-flex; gap: 5px; white-space: nowrap; }
.rv-dot { font-size: 10.5px; letter-spacing: 1px; padding: 1px 6px; border-radius: 3px; }
.rv-dot.ok { color: var(--brass-deep); background: rgba(168,127,45,.12); }
.rv-dot.pending { color: var(--muted); background: var(--paper-2); }

.art-ext { font-size: 12px; letter-spacing: 1px; color: var(--brass-deep); white-space: nowrap; text-decoration: none; border-bottom: 1px solid rgba(168,127,45,.4); }

.fn-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: 6px; }
.fn-card { background: var(--card); border: 1px solid var(--line-soft); padding: 22px 20px; }
.fn-card h3 { margin: 0 0 10px; font-family: var(--serif); font-size: 15.5px; color: var(--ink-1); letter-spacing: 1px; }
.fn-card p { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--ink-2); }
.fn-idx { display: block; font-family: var(--serif); font-size: 12px; color: var(--brass); letter-spacing: 2px; margin-bottom: 10px; }
@media (max-width: 720px) {
  .fn-grid { grid-template-columns: 1fr; }
  .flow-step { font-size: 12px; }
}

/* ---------- 选题库（research_topics） ---------- */
.rt-note { margin: 0 0 16px; font-size: 12.5px; color: var(--muted); letter-spacing: 1px; line-height: 1.7; }
.rt-list { border-top: 1px solid var(--line-soft); }
.rt-card { border-bottom: 1px solid var(--line-soft); }
.rt-head { display: flex; align-items: center; gap: 16px; width: 100%; padding: 16px 4px; background: none; border: 0; cursor: pointer; text-align: left; font: inherit; }
.rt-idx { font-family: var(--serif); font-size: 12px; color: var(--brass); letter-spacing: 2px; }
.rt-main { flex: 1; min-width: 0; }
.rt-title { display: block; font-family: var(--serif); font-size: 15.5px; font-weight: 700; color: var(--ink-1); letter-spacing: 1px; line-height: 1.5; }
.rt-meta { display: block; margin-top: 4px; font-size: 12.5px; color: var(--muted); line-height: 1.6; }
.rt-side { display: flex; align-items: center; gap: 10px; white-space: nowrap; }
.rt-prio { font-family: var(--serif); font-size: 12px; color: var(--brass-deep); border: 1px solid rgba(168,127,45,.4); padding: 1px 7px; border-radius: 999px; }
.lit-badge { font-size: 10.5px; letter-spacing: 1px; padding: 2px 8px; border-radius: 3px; white-space: nowrap; }
.lit-badge.gap { color: #fff; background: var(--brass); }
.lit-badge.thin { color: var(--brass-deep); background: rgba(168,127,45,.14); }
.lit-badge.rich { color: var(--muted); background: var(--paper-2); border: 1px solid var(--line-soft); }
.lit-badge.unk { color: var(--muted); background: var(--paper-2); }
.rt-body { display: none; padding: 2px 4px 24px 34px; }
.rt-card.open .rt-body { display: block; }
.rt-card.open .rt-head .row-arrow { transform: rotate(90deg); }
.rt-sec { margin-top: 14px; }
.rt-sec h4 { margin: 0 0 8px; font-family: var(--serif); font-size: 13px; font-weight: 700; letter-spacing: 2px; color: var(--brass-deep); }
.rt-sec p { margin: 0; font-size: 13.5px; line-height: 1.75; color: var(--ink-2); }
.rt-idea { display: flex; gap: 12px; margin: 0 0 8px; font-size: 13.5px; line-height: 1.7; color: var(--ink-2); }
.rt-idea-k { flex: 0 0 64px; font-size: 12px; letter-spacing: 1px; color: var(--brass); padding-top: 2px; }
.rt-litnote { color: var(--muted) !important; font-size: 12.5px !important; margin-bottom: 8px !important; }
@media (max-width: 720px) {
  .rt-head { flex-wrap: wrap; gap: 8px; }
  .rt-side { width: 100%; justify-content: flex-end; }
  .rt-body { padding-left: 16px; }
}