/* ============== Tokens ============== */
:root {
  --bg: #FBF9F4;
  --bg-soft: #F6F2EA;
  --card: #FFFFFF;
  --line: #ECE7DC;
  --line-strong: #DDD5C5;
  --ink: #1A1916;
  --ink-2: #4A4640;
  --ink-3: #6B6760;
  --ink-4: #9C968C;
  --accent: #2F5D45;          /* deep moss */
  --accent-soft: #E8EFE9;
  --accent-ink: #1F3D2D;
  --warn: #B85C20;            /* burnt amber */
  --warn-soft: #F7EADE;
  --danger: #A8332B;
  --danger-soft: #F5E2DF;
  --good: #3F7A4C;
  --good-soft: #E6EFE5;
  --info: #3B5A82;
  --info-soft: #E4EAF2;

  --font-sans: "Inter", "Söhne", "PingFang SC", "Hiragino Sans GB", "HarmonyOS Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-serif: "Source Serif 4", "Source Serif Pro", "Songti SC", "Noto Serif SC", Georgia, serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  --r-sm: 6px;
  --r-md: 8px;
  --r-lg: 12px;

  --shadow-card: 0 1px 0 rgba(26,25,22,0.04), 0 0 0 1px var(--line);
  --shadow-pop: 0 8px 24px -8px rgba(26,25,22,0.12), 0 0 0 1px var(--line);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
}

/* ============== App shell ============== */
.app {
  display: grid;
  grid-template-columns: 264px 1fr;
  min-height: 100vh;
}

.doc-rail {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--bg);
  border-right: 1px solid var(--line);
  padding: 28px 24px 60px;
}
.doc-rail::-webkit-scrollbar { width: 6px; }
.doc-rail::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 3px; }

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}
.brand-mark {
  width: 28px; height: 28px;
  border-radius: 7px;
  background: var(--accent);
  display: grid; place-items: center;
  color: #F4EFE3;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
}
.brand-name {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.brand-sub {
  font-size: 11px;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.rail-section {
  margin-bottom: 18px;
}
.rail-section-title {
  font-size: 10.5px;
  font-weight: 600;
  color: var(--ink-4);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 8px;
  padding: 0 8px;
}
.rail-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  font-size: 13px;
  color: var(--ink-2);
  border-radius: 6px;
  cursor: pointer;
  text-decoration: none;
  user-select: none;
  line-height: 1.4;
}
.rail-link .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-4);
  width: 22px;
  flex-shrink: 0;
}
.rail-link:hover { background: var(--bg-soft); color: var(--ink); }
.rail-link.active {
  background: var(--accent-soft);
  color: var(--accent-ink);
}
.rail-link.active .num { color: var(--accent); }

/* ============== Main column ============== */
.main {
  padding: 0;
  max-width: 100%;
}

.section {
  padding: 80px 56px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 0;
}
.section.compact { padding: 48px 56px; }

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-title {
  font-size: 34px;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin: 0 0 16px;
  max-width: 820px;
  text-wrap: balance;
}
.section-title .accent {
  color: var(--accent);
  font-style: italic;
  font-family: var(--font-serif);
  font-weight: 500;
}
.section-lede {
  font-size: 17px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 720px;
  margin: 0 0 36px;
  text-wrap: pretty;
}

h3.h3 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 32px 0 12px;
}
h4.h4 {
  font-size: 14px;
  font-weight: 600;
  margin: 18px 0 8px;
  color: var(--ink);
}

p.body {
  margin: 0 0 12px;
  color: var(--ink-2);
  max-width: 760px;
  text-wrap: pretty;
}
ul.body, ol.body {
  padding-left: 18px;
  color: var(--ink-2);
  margin: 0 0 14px;
  max-width: 760px;
}
ul.body li, ol.body li { margin-bottom: 6px; }
ul.body li::marker { color: var(--ink-4); }

code.inline {
  font-family: var(--font-mono);
  font-size: 12.5px;
  background: var(--bg-soft);
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--accent-ink);
}

.callout {
  margin: 18px 0 24px;
  padding: 14px 18px;
  border-left: 2px solid var(--accent);
  background: var(--accent-soft);
  color: var(--accent-ink);
  font-size: 13.5px;
  max-width: 760px;
  border-radius: 0 6px 6px 0;
}
.callout .label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 4px;
  color: var(--accent);
}

.judgment {
  margin: 28px 0 0;
  padding: 14px 16px 14px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--ink);
  background: var(--card);
  font-size: 13.5px;
  color: var(--ink);
  max-width: 760px;
  border-radius: 0 6px 6px 0;
}
.judgment .label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 4px;
  color: var(--ink-4);
}

/* Tables in docs */
table.doc {
  width: 100%;
  max-width: 920px;
  border-collapse: collapse;
  margin: 14px 0 24px;
  font-size: 13px;
}
table.doc th, table.doc td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--ink-2);
}
table.doc th {
  font-weight: 600;
  color: var(--ink);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  background: var(--bg-soft);
}
table.doc tr:last-child td { border-bottom: none; }
table.doc td.mono { font-family: var(--font-mono); font-size: 12px; }
table.doc td .pill { font-size: 11px; }

/* Two-col card grid */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 920px; }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 14px; max-width: 920px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; max-width: 920px; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 16px 18px;
}
.card .cap {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
  margin-bottom: 8px;
}
.card .num-big {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  font-size: 12px;
  border-radius: 999px;
  background: var(--bg-soft);
  color: var(--ink-2);
  border: 1px solid var(--line);
  font-weight: 500;
  white-space: nowrap;
}
.pill.accent { background: var(--accent-soft); color: var(--accent-ink); border-color: transparent; }
.pill.warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.pill.danger { background: var(--danger-soft); color: var(--danger); border-color: transparent; }
.pill.good { background: var(--good-soft); color: var(--good); border-color: transparent; }
.pill.info { background: var(--info-soft); color: var(--info); border-color: transparent; }
.pill.solid { background: var(--ink); color: #F4EFE3; border-color: transparent; }
.pill .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
}

/* Page demo frames inside doc */
.demo-shell {
  margin: 22px 0 4px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  box-shadow: 0 12px 30px -18px rgba(26,25,22,0.18);
  /* Break out of the section's right padding to gain horizontal room */
  margin-right: -28px;
}
.demo-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-3);
}
.demo-bar .dots { display: flex; gap: 5px; margin-right: 6px; }
.demo-bar .dots span {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--line-strong);
}
.demo-cap {
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--ink-4);
  letter-spacing: 0.04em;
}

/* ============== Product UI tokens (used inside demo frames) ============== */
.product {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
}
.product .topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 18px;
  border-bottom: 1px solid var(--line);
  background: var(--card);
  height: 48px;
}
.product .crumbs {
  display: flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--ink-3);
}
.product .crumbs .sep { color: var(--ink-4); }
.product .crumbs b { color: var(--ink); font-weight: 500; }
.product .topbar-spacer { flex: 1; }
.product .search {
  display: flex; align-items: center; gap: 8px;
  height: 30px; padding: 0 10px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 12.5px; color: var(--ink-3);
  width: 280px;
}
.product .iconbtn {
  width: 30px; height: 30px;
  display: grid; place-items: center;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink-3);
  cursor: pointer;
}
.product .iconbtn:hover { background: var(--bg-soft); color: var(--ink); }
.product .avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #F4EFE3;
  display: grid; place-items: center;
  font-size: 11px; font-weight: 600;
  letter-spacing: 0.02em;
}

.product .layout {
  display: grid;
  grid-template-columns: 200px 1fr;
}
.product .sidebar {
  border-right: 1px solid var(--line);
  background: var(--bg);
  padding: 18px 14px;
  min-height: 100%;
  display: flex;
  flex-direction: column;
}
.product .sidebar-top { flex: 1 1 auto; min-height: 0; overflow-y: auto; }
.product .sidebar-bottom {
  flex-shrink: 0;
  padding-top: 14px;
  margin-top: 12px;
  border-top: 1px solid var(--line);
}
/* 上传素材：独立的"数据录入入口"，与一级菜单刻意区分 */
.product .upload-entry {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 1px dashed var(--line-strong);
  border-radius: 8px;
  background: var(--card);
  cursor: pointer;
  user-select: none;
  transition: all 0.15s ease;
}
.product .upload-entry:hover {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-soft);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.product .upload-entry.active {
  border-color: var(--accent);
  border-style: solid;
  background: var(--accent-soft);
}
.product .upload-entry-ico { font-size: 18px; flex-shrink: 0; }
.product .upload-entry-title {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--ink);
  letter-spacing: 0.02em;
}
.product .upload-entry-sub {
  font-size: 10px;
  color: var(--ink-4);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.product .upload-entry-plus {
  font-size: 18px;
  color: var(--accent);
  font-weight: 300;
  flex-shrink: 0;
  line-height: 1;
}
.product .upload-entry:hover .upload-entry-plus { transform: rotate(90deg); transition: transform 0.2s; }
.product .nav-group { margin-bottom: 18px; }
.product .nav-title {
  font-size: 10.5px; letter-spacing: 0.1em;
  color: var(--ink-4); text-transform: uppercase;
  font-weight: 600;
  padding: 0 8px 6px;
}
.product .nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 8px;
  border-radius: 5px;
  font-size: 13px;
  color: var(--ink-2);
  cursor: pointer;
  user-select: none;
  margin-bottom: 1px;
}
.product .nav-item:hover { background: var(--bg-soft); color: var(--ink); }
.product .nav-item.active { background: var(--accent-soft); color: var(--accent-ink); font-weight: 500; }
.product .nav-item .ico { width: 14px; height: 14px; flex-shrink: 0; }
.product .nav-item .badge {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  color: var(--ink-3);
  padding: 0 5px;
  border-radius: 4px;
  height: 16px; line-height: 14px;
}
.product .nav-item.active .badge { background: var(--accent); color: #F4EFE3; border-color: transparent; }

.product .content {
  padding: 22px 24px 36px;
  background: var(--bg);
  min-width: 0;
}

.product .page-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 22px;
  gap: 24px;
}
.product .page-title {
  font-size: 22px; font-weight: 600; letter-spacing: -0.015em;
  margin: 0 0 4px;
}
.product .page-sub { font-size: 12.5px; color: var(--ink-3); }

.product .btn {
  display: inline-flex; align-items: center; gap: 6px;
  height: 30px; padding: 0 12px;
  white-space: nowrap;
  flex-shrink: 0;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  font-size: 12.5px;
  cursor: pointer;
  font-family: inherit;
}
.product .btn:hover { background: var(--bg-soft); }
.product .btn.primary {
  background: var(--accent); color: #F4EFE3; border-color: transparent;
}
.product .btn.primary:hover { background: var(--accent-ink); }

.product .stat {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 14px 16px;
}
.product .stat .lbl {
  font-size: 11.5px; letter-spacing: 0.04em;
  color: var(--ink-3);
  display: flex; align-items: center; gap: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.product .stat .val {
  font-family: var(--font-serif);
  font-size: 30px; font-weight: 500;
  letter-spacing: -0.02em;
  margin-top: 6px;
  color: var(--ink);
  line-height: 1;
}
.product .stat .delta {
  margin-top: 6px;
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--good);
}
.product .stat .delta.dn { color: var(--danger); }
.product .stat .delta.flat { color: var(--ink-4); }

.product .panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.product .panel-head {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  display: flex; align-items: center; justify-content: space-between;
}
.product .panel-title {
  font-size: 13px; font-weight: 600;
  display: flex; align-items: center; gap: 8px;
}
.product .panel-title .meta { color: var(--ink-4); font-weight: 400; font-size: 11.5px; }
.product .panel-actions { display: flex; align-items: center; gap: 6px; color: var(--ink-3); font-size: 11.5px; }
.product .panel-body { padding: 12px 16px; }
.product .panel-body.flush { padding: 0; }

/* Tables in product */
table.t {
  width: 100%; border-collapse: collapse;
  font-size: 12.5px;
}
table.t thead th {
  text-align: left;
  font-weight: 500;
  font-size: 10.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-4);
  padding: 8px 12px;
  border-bottom: 1px solid var(--line);
  background: var(--bg);
}
table.t tbody td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  color: var(--ink-2);
  vertical-align: top;
}
table.t tbody tr:last-child td { border-bottom: none; }
table.t tbody tr:hover { background: var(--bg-soft); }
table.t .strong { color: var(--ink); font-weight: 500; }
table.t .mono { font-family: var(--font-mono); font-size: 11.5px; }

/* score bars */
.score {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--font-mono); font-size: 12px;
  max-width: 100%; overflow: hidden;
}
.score .bar {
  flex: 1 1 auto; min-width: 24px; max-width: 70px;
  height: 5px; background: var(--line);
  border-radius: 3px; overflow: hidden;
}
.score .bar i {
  display: block; height: 100%; background: var(--accent);
}
/* table cell containing score: clip overflow + reserve right padding */
table.t td .score { max-width: 100%; }

/* sparklines + tiny charts */
.spark { display: block; }

/* timeline */
.tl { position: relative; padding-left: 18px; }
.tl::before {
  content: ""; position: absolute;
  left: 5px; top: 6px; bottom: 6px;
  width: 1px; background: var(--line);
}
.tl-item { position: relative; padding: 6px 0 14px; }
.tl-item::before {
  content: ""; position: absolute;
  left: -16px; top: 12px;
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--card);
  border: 2px solid var(--ink-4);
}
.tl-item.accent::before { border-color: var(--accent); }
.tl-item.warn::before { border-color: var(--warn); }
.tl-item.danger::before { border-color: var(--danger); }
.tl-item.good::before { border-color: var(--good); }
.tl-item .when {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-4);
  letter-spacing: 0.04em;
}
.tl-item .what {
  font-size: 13px;
  color: var(--ink);
  margin-top: 1px;
}
.tl-item .src {
  font-family: var(--font-mono);
  font-size: 10.5px;
  color: var(--ink-4);
  margin-top: 2px;
}

/* mermaid-ish ascii */
.ascii {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--ink-2);
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px 18px;
  white-space: pre;
  overflow-x: auto;
  max-width: 920px;
}

/* ============== Doc-page divider ============== */
.divider-eyebrow {
  display: flex; align-items: center; gap: 12px;
  margin: 0 0 6px;
}
.divider-eyebrow .num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
}
.divider-eyebrow .lbl {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-4);
}

/* responsive minor */
@media (max-width: 1280px) {
  .section { padding: 64px 48px; }
}