/* ==========================================================================
   表达力私人教练 · 共享样式
   Expression Coach · Shared Stylesheet
   ========================================================================== */

:root {
  --ink: #1a1410;
  --ink-soft: #3a322c;
  --ink-mute: #6b5f55;
  --paper: #faf6ee;
  --paper-warm: #f3ecdf;
  --paper-deep: #e8dec9;
  --terracotta: #b8552c;
  --terracotta-soft: #e08a5f;
  --gold: #c89653;
  --indigo: #2e3a5f;
  --moss: #5a6b3e;
  --crimson: #8c2a2a;
  --plum: #6a3b8f;
  --line: #d6c9ad;
  --shadow: rgba(60, 40, 20, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', -apple-system, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--paper);
  color: var(--ink);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
.serif { font-family: 'Noto Serif SC', serif; }

/* Reading progress */
.progress-bar {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--terracotta), var(--gold));
  width: 0; z-index: 1000; transition: width 0.1s;
}

/* Layout */
.container { display: grid; grid-template-columns: 280px 1fr; max-width: 1400px; margin: 0 auto; }
.sidebar {
  position: sticky; top: 0; height: 100vh; padding: 40px 30px;
  border-right: 1px solid var(--line); overflow-y: auto;
  background: var(--paper-warm);
}
.sidebar h2 {
  font-family: 'Noto Serif SC', serif; font-size: 14px; font-weight: 700;
  letter-spacing: 4px; color: var(--terracotta); margin-bottom: 8px; text-transform: uppercase;
}
.sidebar .doc-no { font-size: 36px; font-weight: 900; color: var(--ink); font-family: 'Noto Serif SC', serif; margin-bottom: 4px; }
.sidebar .doc-title { font-size: 13px; color: var(--ink-mute); margin-bottom: 30px; line-height: 1.6; font-family: 'Noto Serif SC', serif; }
.toc-section { margin-bottom: 24px; }
.toc-section-title {
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px;
  color: var(--terracotta); margin-bottom: 10px; padding-left: 4px;
}
.toc a {
  display: block; padding: 6px 10px; color: var(--ink-soft); font-size: 13px;
  text-decoration: none; border-left: 2px solid transparent; transition: all 0.2s;
  font-family: 'Noto Serif SC', serif;
}
.toc a:hover { color: var(--terracotta); border-left-color: var(--gold); background: rgba(200,150,83,0.08); }
.toc a.active { color: var(--terracotta); border-left-color: var(--terracotta); background: rgba(184,85,44,0.06); font-weight: 500; }
.toc a.indent { padding-left: 24px; font-size: 12px; color: var(--ink-mute); }

/* Sidebar back link */
.sidebar-home {
  display: block; margin-bottom: 24px; padding: 8px 12px; font-size: 12px;
  color: var(--ink-mute); text-decoration: none; border: 1px solid var(--line);
  border-radius: 4px; transition: all 0.2s; font-family: 'Noto Serif SC', serif;
}
.sidebar-home:hover { background: var(--paper-deep); color: var(--terracotta); border-color: var(--terracotta); }

/* Main content */
.main { padding: 60px 70px 120px; max-width: 920px; }

/* Hero */
.hero { margin-bottom: 80px; padding-bottom: 60px; border-bottom: 1px solid var(--line); }
.hero-eyebrow {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 6px;
  color: var(--terracotta); margin-bottom: 24px; text-transform: uppercase;
}
.hero h1 {
  font-family: 'Noto Serif SC', serif; font-size: 64px; font-weight: 900;
  line-height: 1.1; color: var(--ink); margin-bottom: 16px; letter-spacing: -1px;
}
.hero h1 .accent { color: var(--terracotta); font-style: italic; }
.hero-subtitle {
  font-family: 'Noto Serif SC', serif; font-size: 22px; font-weight: 400;
  color: var(--ink-soft); margin-bottom: 40px; line-height: 1.5;
}
.hero-quote {
  border-left: 3px solid var(--gold); padding: 18px 28px; background: var(--paper-warm);
  font-family: 'Noto Serif SC', serif; font-size: 16px; color: var(--ink-soft); line-height: 1.9;
  margin-bottom: 36px; border-radius: 0 6px 6px 0;
}
.hero-quote .quote-mark { color: var(--terracotta); font-size: 24px; font-weight: 700; }

/* Layer cards */
.three-layers { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.layer-card {
  padding: 24px 22px; background: var(--paper-warm); border: 1px solid var(--line);
  border-radius: 8px; transition: all 0.3s;
}
.layer-card:hover { transform: translateY(-3px); box-shadow: 0 12px 30px var(--shadow); border-color: var(--gold); }
.layer-num { font-family: 'Noto Serif SC', serif; font-size: 14px; color: var(--terracotta); font-weight: 700; letter-spacing: 2px; }
.layer-title { font-family: 'Noto Serif SC', serif; font-size: 18px; font-weight: 700; color: var(--ink); margin: 6px 0 8px; }
.layer-desc { font-size: 13px; color: var(--ink-mute); line-height: 1.7; }

/* Section */
section { margin-bottom: 100px; scroll-margin-top: 20px; }
.section-marker {
  display: flex; align-items: baseline; gap: 16px; margin-bottom: 8px;
}
.section-no {
  font-family: 'Noto Serif SC', serif; font-size: 14px; font-weight: 700; color: var(--terracotta);
  letter-spacing: 4px;
}
.section-line { flex: 1; height: 1px; background: var(--line); }

h2 {
  font-family: 'Noto Serif SC', serif; font-size: 42px; font-weight: 900;
  color: var(--ink); margin-bottom: 14px; line-height: 1.2; letter-spacing: -0.5px;
}
h2 .accent { color: var(--terracotta); }
.section-lead {
  font-family: 'Noto Serif SC', serif; font-size: 19px; color: var(--ink-soft);
  margin-bottom: 50px; line-height: 1.7; font-weight: 400;
}
h3 {
  font-family: 'Noto Serif SC', serif; font-size: 26px; font-weight: 700;
  color: var(--ink); margin: 60px 0 20px; line-height: 1.4;
}
h3::before { content: "§ "; color: var(--terracotta); font-weight: 400; }
h4 {
  font-family: 'Noto Serif SC', serif; font-size: 19px; font-weight: 700;
  color: var(--ink); margin: 36px 0 14px; line-height: 1.5;
}
h4::before { content: "▸ "; color: var(--gold); }
p { margin-bottom: 18px; color: var(--ink-soft); }
strong { color: var(--ink); font-weight: 700; }
em { font-style: italic; color: var(--ink-soft); }

/* Pull quote */
.pull-quote {
  margin: 40px -20px; padding: 36px 44px;
  font-family: 'Noto Serif SC', serif; font-size: 24px; font-weight: 500;
  color: var(--ink); line-height: 1.6; position: relative;
  background: linear-gradient(135deg, var(--paper-warm), var(--paper-deep));
  border-radius: 12px; border-left: 6px solid var(--terracotta);
}
.pull-quote::before {
  content: """; position: absolute; top: -10px; left: 24px; font-size: 96px; color: var(--gold);
  font-family: 'Noto Serif SC', serif; line-height: 1; opacity: 0.5;
}
.pull-quote .attr { display: block; font-size: 15px; color: var(--ink-mute); margin-top: 12px; font-weight: 400; font-style: italic; }

/* Inline blockquote */
blockquote {
  border-left: 3px solid var(--gold); padding: 14px 24px; margin: 20px 0;
  font-family: 'Noto Serif SC', serif; color: var(--ink-soft); font-size: 17px;
  background: rgba(200, 150, 83, 0.06); border-radius: 0 6px 6px 0; line-height: 1.8;
}
blockquote strong { color: var(--ink); }

/* Table */
table { width: 100%; border-collapse: collapse; margin: 28px 0; font-size: 14px; }
th { background: var(--ink); color: var(--paper); padding: 14px 16px; text-align: left; font-weight: 600; font-family: 'Noto Serif SC', serif; }
td { padding: 14px 16px; border-bottom: 1px solid var(--line); color: var(--ink-soft); vertical-align: top; line-height: 1.7; }
tr:hover td { background: var(--paper-warm); }

/* Lists */
ul, ol { margin: 18px 0 18px 24px; color: var(--ink-soft); }
ul li, ol li { margin-bottom: 10px; line-height: 1.85; }
ul li::marker { color: var(--terracotta); }

/* Code-style box */
.flow-box {
  background: var(--ink); color: var(--paper); padding: 28px 32px;
  border-radius: 10px; font-family: 'Inter', monospace; font-size: 14px;
  line-height: 1.9; margin: 24px 0; box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  white-space: pre-wrap;
}
.flow-box .arrow { color: var(--gold); }
.flow-box .label { color: var(--terracotta-soft); font-weight: 600; }
.flow-box .note { color: var(--ink-mute); font-style: italic; }

/* Insight callout */
.insight {
  display: flex; gap: 20px; margin: 32px 0;
  background: linear-gradient(to right, var(--paper-warm), transparent);
  padding: 28px 32px; border-radius: 8px; border-left: 4px solid var(--crimson);
}
.insight-icon { font-size: 28px; color: var(--crimson); flex-shrink: 0; line-height: 1; }
.insight-body { flex: 1; }
.insight-label {
  font-family: 'Noto Serif SC', serif; font-size: 12px; font-weight: 700;
  letter-spacing: 4px; color: var(--crimson); text-transform: uppercase; margin-bottom: 6px;
}
.insight-text { font-family: 'Noto Serif SC', serif; font-size: 18px; color: var(--ink); line-height: 1.7; font-weight: 500; }

/* SVG diagrams container */
.diagram { margin: 40px 0; padding: 30px; background: var(--paper-warm); border-radius: 12px; }
.diagram-title {
  font-family: 'Noto Serif SC', serif; font-size: 14px; font-weight: 700;
  color: var(--terracotta); letter-spacing: 3px; margin-bottom: 20px; text-transform: uppercase;
}
.diagram svg { width: 100%; max-width: 720px; height: auto; display: block; margin: 0 auto; }

/* Two-column compare */
.compare {
  display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 30px 0;
}
.compare-card {
  padding: 24px 26px; border-radius: 10px; border: 1px solid var(--line);
}
.compare-card.bad { background: rgba(140, 42, 42, 0.05); border-color: rgba(140, 42, 42, 0.2); }
.compare-card.good { background: rgba(90, 107, 62, 0.06); border-color: rgba(90, 107, 62, 0.25); }
.compare-card.neutral { background: var(--paper-warm); }
.compare-card .label {
  font-family: 'Noto Serif SC', serif; font-size: 11px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 12px;
}
.compare-card.bad .label { color: var(--crimson); }
.compare-card.good .label { color: var(--moss); }
.compare-card.neutral .label { color: var(--terracotta); }
.compare-card p { margin-bottom: 8px; font-size: 14px; }

/* Dimension cards */
.dim-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 18px; margin: 30px 0; }
.dim-card {
  padding: 26px 24px; background: var(--paper-warm); border: 1px solid var(--line);
  border-radius: 10px; transition: all 0.3s; position: relative; overflow: hidden;
}
.dim-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
}
.dim-card.evo::before, .dim-card.color-1::before { background: linear-gradient(90deg, var(--terracotta), var(--gold)); }
.dim-card.neuro::before, .dim-card.color-2::before { background: linear-gradient(90deg, var(--crimson), #d4574c); }
.dim-card.philo::before, .dim-card.color-3::before { background: linear-gradient(90deg, var(--indigo), #5a6db8); }
.dim-card.compute::before, .dim-card.color-4::before { background: linear-gradient(90deg, var(--moss), #8fa869); }
.dim-card.power::before, .dim-card.color-5::before { background: linear-gradient(90deg, var(--plum), #b87bb0); }
.dim-card:hover { transform: translateY(-4px); box-shadow: 0 16px 36px var(--shadow); }
.dim-num { font-family: 'Noto Serif SC', serif; font-size: 12px; font-weight: 700; letter-spacing: 4px; color: var(--terracotta); }
.dim-name { font-family: 'Noto Serif SC', serif; font-size: 22px; font-weight: 700; margin: 6px 0 10px; color: var(--ink); }
.dim-tag { font-size: 13px; color: var(--ink-mute); line-height: 1.7; font-style: italic; }
.dim-body { font-size: 14px; color: var(--ink-soft); line-height: 1.8; margin-top: 10px; }

/* Mantra */
.mantras { margin: 40px 0; }
.mantra {
  display: flex; gap: 24px; padding: 22px 26px; margin-bottom: 14px;
  background: var(--paper-warm); border-radius: 10px; border-left: 4px solid var(--gold);
  align-items: flex-start; transition: all 0.2s;
}
.mantra:hover { transform: translateX(4px); border-left-color: var(--terracotta); }
.mantra-num {
  font-family: 'Noto Serif SC', serif; font-size: 36px; font-weight: 900;
  color: var(--terracotta); line-height: 1; flex-shrink: 0; min-width: 50px;
}
.mantra-text {
  font-family: 'Noto Serif SC', serif; font-size: 17px; color: var(--ink);
  line-height: 1.7; font-weight: 500; padding-top: 4px;
}
.mantra-tag {
  display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 2px;
  background: var(--ink); color: var(--paper); padding: 2px 8px; border-radius: 3px;
  margin-right: 8px; vertical-align: middle;
}

/* Self-check */
.checklist { margin: 30px 0; }
.checklist-group { margin-bottom: 28px; }
.checklist-group-title {
  font-family: 'Noto Serif SC', serif; font-size: 12px; font-weight: 700;
  letter-spacing: 3px; color: var(--terracotta); margin-bottom: 14px; text-transform: uppercase;
}
.check-item {
  display: flex; gap: 14px; padding: 14px 18px; margin-bottom: 8px;
  background: var(--paper-warm); border-radius: 6px; align-items: flex-start;
  transition: all 0.2s; cursor: pointer;
}
.check-item:hover { background: var(--paper-deep); }
.check-item.checked { background: rgba(90,107,62,0.1); }
.check-item.checked .check-text { text-decoration: line-through; color: var(--ink-mute); }
.check-box {
  width: 18px; height: 18px; border: 2px solid var(--ink-mute); border-radius: 3px;
  flex-shrink: 0; margin-top: 4px; transition: all 0.2s;
}
.check-item.checked .check-box { background: var(--moss); border-color: var(--moss); }
.check-item.checked .check-box::after { content: "✓"; color: white; font-size: 12px; line-height: 14px; display: block; text-align: center; }
.check-text { font-family: 'Noto Serif SC', serif; font-size: 15px; color: var(--ink-soft); line-height: 1.6; }

/* Step / Phase blocks */
.steps { margin: 30px 0; }
.step {
  display: flex; gap: 24px; padding: 24px 28px; margin-bottom: 14px;
  background: var(--paper-warm); border-radius: 10px; border-left: 4px solid var(--terracotta);
}
.step-num {
  font-family: 'Noto Serif SC', serif; font-size: 28px; font-weight: 900;
  color: var(--terracotta); line-height: 1; flex-shrink: 0; min-width: 60px;
}
.step-title { font-family: 'Noto Serif SC', serif; font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 8px; }
.step-body { color: var(--ink-soft); font-size: 14px; line-height: 1.8; }

/* Phase timeline */
.phase-block {
  margin: 24px 0; padding: 28px 32px; background: var(--paper-warm);
  border-radius: 12px; border-left: 5px solid var(--gold);
}
.phase-block.p0 { border-color: var(--moss); }
.phase-block.p1 { border-color: var(--gold); }
.phase-block.p2 { border-color: var(--terracotta); }
.phase-block.p3 { border-color: var(--crimson); }
.phase-block.p4 { border-color: var(--plum); }
.phase-header {
  display: flex; justify-content: space-between; align-items: baseline;
  border-bottom: 1px solid var(--line); padding-bottom: 12px; margin-bottom: 18px; flex-wrap: wrap; gap: 8px;
}
.phase-name { font-family: 'Noto Serif SC', serif; font-size: 22px; font-weight: 700; color: var(--ink); }
.phase-meta { font-size: 12px; color: var(--ink-mute); letter-spacing: 2px; text-transform: uppercase; }

/* Doc footer with prev/next */
.doc-footer {
  margin-top: 100px; padding-top: 40px; border-top: 1px solid var(--line);
}
.doc-footer-meta {
  text-align: center; color: var(--ink-mute); font-size: 13px; margin-bottom: 30px;
  font-family: 'Noto Serif SC', serif;
}
.nav-row {
  display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 20px;
}
.nav-link {
  display: block; padding: 22px 26px; background: var(--paper-warm);
  border: 1px solid var(--line); border-radius: 10px; text-decoration: none;
  transition: all 0.2s;
}
.nav-link:hover { background: var(--ink); transform: translateY(-2px); }
.nav-link:hover .nav-direction, .nav-link:hover .nav-title { color: var(--gold); }
.nav-link:hover .nav-subtitle { color: var(--paper); }
.nav-direction {
  font-family: 'Noto Serif SC', serif; font-size: 11px; font-weight: 700;
  letter-spacing: 4px; color: var(--terracotta); margin-bottom: 8px; text-transform: uppercase;
  transition: color 0.2s;
}
.nav-title { font-family: 'Noto Serif SC', serif; font-size: 18px; font-weight: 700; color: var(--ink); margin-bottom: 4px; transition: color 0.2s; }
.nav-subtitle { font-size: 13px; color: var(--ink-mute); transition: color 0.2s; }
.nav-link.next { text-align: right; }
.nav-link.disabled { opacity: 0.4; pointer-events: none; }

/* Mermaid */
.mermaid { background: var(--paper-warm); padding: 30px; border-radius: 10px; margin: 30px 0; text-align: center; }

/* Highlight chip */
.chip {
  display: inline-block; padding: 2px 10px; border-radius: 12px; font-size: 12px;
  font-weight: 600; letter-spacing: 1px; vertical-align: middle; margin: 0 4px;
}
.chip.terra { background: var(--terracotta); color: white; }
.chip.gold { background: var(--gold); color: var(--ink); }
.chip.moss { background: var(--moss); color: white; }
.chip.indigo { background: var(--indigo); color: white; }
.chip.crimson { background: var(--crimson); color: white; }
.chip.outline { background: transparent; border: 1px solid var(--ink); color: var(--ink); }

/* Module grid (for 7-module structure) */
.module-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; margin: 24px 0; }
.module-card {
  padding: 22px 22px; background: var(--paper-warm); border-radius: 10px;
  border-top: 3px solid var(--gold); transition: all 0.2s;
  text-decoration: none; color: inherit; display: block;
}
.module-card:hover { transform: translateY(-3px); box-shadow: 0 12px 26px var(--shadow); }
.module-icon { font-size: 24px; margin-bottom: 8px; }
.module-name { font-family: 'Noto Serif SC', serif; font-size: 16px; font-weight: 700; color: var(--ink); margin-bottom: 6px; }
.module-desc { font-size: 13px; color: var(--ink-mute); line-height: 1.7; }

/* Special box: "Rare Tool" */
.rare-tool {
  margin: 28px 0; padding: 28px 32px; background: linear-gradient(135deg, #2a1f15, #1a1410);
  color: var(--paper); border-radius: 12px; box-shadow: 0 12px 32px rgba(0,0,0,0.2);
  border-left: 4px solid var(--gold);
}
.rare-tool-label {
  font-family: 'Noto Serif SC', serif; font-size: 11px; font-weight: 700;
  letter-spacing: 4px; color: var(--gold); margin-bottom: 8px; text-transform: uppercase;
}
.rare-tool-name { font-family: 'Noto Serif SC', serif; font-size: 22px; font-weight: 700; margin-bottom: 14px; }
.rare-tool-body { font-size: 14px; line-height: 1.85; opacity: 0.9; }
.rare-tool-body strong { color: var(--gold); }

/* Persona / role card (for 04) */
.persona-card {
  padding: 22px 24px; background: var(--paper-warm); border-radius: 10px;
  border: 1px solid var(--line); margin-bottom: 12px; transition: all 0.2s;
}
.persona-card:hover { border-color: var(--terracotta); transform: translateX(4px); }
.persona-header { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.persona-icon { font-size: 28px; line-height: 1; }
.persona-name { font-family: 'Noto Serif SC', serif; font-size: 17px; font-weight: 700; color: var(--ink); }
.persona-id { font-size: 11px; color: var(--terracotta); letter-spacing: 2px; }
.persona-traits { font-size: 13px; color: var(--ink-soft); line-height: 1.85; }
.persona-traits dt { font-weight: 600; color: var(--ink); display: inline-block; min-width: 70px; }
.persona-traits dd { display: inline; margin-right: 12px; }

/* Responsive */
@media (max-width: 1024px) {
  .container { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; border-right: none; border-bottom: 1px solid var(--line); }
  .main { padding: 40px 30px 80px; }
  .hero h1 { font-size: 42px; }
  .three-layers, .compare, .nav-row { grid-template-columns: 1fr; }
  .pull-quote { margin: 32px 0; font-size: 19px; padding: 28px 24px; }
  h2 { font-size: 32px; }
}

@media print {
  .sidebar, .progress-bar, .nav-row { display: none; }
  .main { padding: 20px; max-width: none; }
  body { background: white; }
}

/* Accessibility & polish */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}

/* Visible focus state for keyboard users */
a:focus-visible,
.module-card:focus-visible,
.nav-link:focus-visible,
.sidebar-home:focus-visible {
  outline: 2px solid var(--terracotta);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Selection */
::selection { background: var(--terracotta); color: var(--paper); }

/* Custom scrollbar for sidebar */
.sidebar::-webkit-scrollbar { width: 6px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--line); border-radius: 3px; }
.sidebar::-webkit-scrollbar-thumb:hover { background: var(--terracotta); }
.sidebar { scrollbar-width: thin; scrollbar-color: var(--line) transparent; }

/* Anchor offset so h2/section don't hide under top edge when navigated */
section[id], [id^="doc-"], [id^="sec-"], [id^="p"] {
  scroll-margin-top: 24px;
}

/* When .module-card is an anchor (used in index.html), keep card hover lift */
a.module-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 26px var(--shadow);
}