/* ================================================================
   Tool Card · Five-law detail card pattern
   Used on tiandao.html (and structurally on rendao/qiandao with vars)
   ================================================================ */

.tool-card-stack { display: flex; flex-direction: column; gap: var(--space-7); }

.tool-card {
  position: relative;
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: var(--space-5);
  padding: var(--space-6) var(--space-5);
  background: var(--bg-card);
  border: 1px solid var(--line);
  scroll-margin-top: var(--space-7);
  transition: border-color 500ms ease;
}

.tool-card:hover { border-color: var(--gold-faint); }
.tool-card.target-active { border-color: var(--gold-faint); }

@media (max-width: 768px) {
  .tool-card {
    grid-template-columns: 1fr;
    padding: var(--space-5) var(--space-4);
  }
}

.tool-card-num {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--gold);
  letter-spacing: 0.2em;
  font-weight: 300;
  border-right: 1px solid var(--line);
  padding-right: var(--space-3);
  text-align: center;
  align-self: start;
  padding-top: 4px;
}

@media (max-width: 768px) {
  .tool-card-num { border-right: none; border-bottom: 1px solid var(--line); padding: 0 0 var(--space-3); text-align: left; }
}

.tool-card-body { min-width: 0; }

.tool-card-head { margin-bottom: var(--space-5); }

.tool-card-cn {
  font-family: var(--serif-cn);
  font-size: clamp(28px, 3vw, 36px);
  letter-spacing: 0.28em;
  font-weight: 400;
  color: var(--ink);
  margin-bottom: 6px;
}

.tool-card-en {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
  font-weight: 300;
}

/* Pull quote — the "一句话" */
.tool-quote {
  margin: var(--space-5) 0;
  padding: var(--space-4) 0 var(--space-4) var(--space-4);
  border-left: 2px solid var(--gold);
}

.tool-quote-cn {
  font-family: var(--serif-cn);
  font-size: clamp(20px, 2vw, 26px);
  line-height: 1.6;
  letter-spacing: 0.15em;
  color: var(--ink);
  margin-bottom: 12px;
}

.tool-quote-cn::before { content: '「'; color: var(--gold); margin-right: 0.1em; }
.tool-quote-cn::after  { content: '」'; color: var(--gold); margin-left: 0.1em; }

.tool-quote-sub {
  font-family: var(--serif-en);
  font-style: italic;
  font-size: 15px;
  letter-spacing: 0.04em;
  color: var(--ink-dim);
}

/* Section blocks within a card */
.tool-section { margin-top: var(--space-5); }

.tool-section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: var(--space-3);
}

.tool-section-bar {
  width: 24px;
  height: 1px;
  background: var(--gold);
  flex-shrink: 0;
}

.tool-section-title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.32em;
  color: var(--gold);
  text-transform: uppercase;
  font-weight: 400;
}

.tool-section-body {
  font-family: var(--serif-cn);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-dim);
}

.tool-section-body p + p { margin-top: 12px; }
.tool-section-body strong { color: var(--ink); font-weight: 400; }
.tool-section-body em { font-style: italic; color: var(--gold); }

/* Two-column principle layout */
.principle-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
  margin-top: var(--space-3);
}

@media (max-width: 768px) { .principle-grid { grid-template-columns: 1fr; } }

.principle-col {
  padding: var(--space-3);
  background: var(--bg-mid);
  border-left: 1px solid var(--line);
}

.principle-col-label {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.32em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: 8px;
}

/* Formula — 5-step "怎么用" */
.formula-list {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

.formula-list li {
  counter-increment: step;
  position: relative;
  padding: 10px 0 10px 44px;
  font-family: var(--serif-cn);
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
  border-bottom: 1px dashed var(--line);
}

.formula-list li:last-child { border-bottom: none; }

.formula-list li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.15em;
}

.formula-list li .step-label {
  font-family: var(--serif-cn);
  font-weight: 500;
  color: var(--ink);
  margin-right: 12px;
}

.formula-list li .step-desc {
  color: var(--ink-dim);
  font-size: 14px;
}

/* Case story block */
.tool-case {
  padding: var(--space-4);
  background: var(--bg-mid);
  border: 1px solid var(--line);
  font-family: var(--serif-cn);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-dim);
  position: relative;
}

.tool-case::before {
  content: '"';
  position: absolute;
  top: 4px;
  left: 12px;
  font-family: var(--serif-en);
  font-size: 56px;
  color: var(--gold-faint);
  line-height: 1;
}

.tool-case-text {
  padding-left: var(--space-4);
  font-style: italic;
}

/* References list */
.reference-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  list-style: none;
}

.reference-list li {
  font-family: var(--serif-cn);
  font-size: 13px;
  color: var(--ink-dim);
  letter-spacing: 0.05em;
  position: relative;
  padding-right: 16px;
}

.reference-list li:not(:last-child)::after {
  content: '·';
  position: absolute;
  right: 0;
  color: var(--ink-faint);
}

/* ============ 详情页入口 · de（描边按钮 + 金色箭头块，与乾道/人道同款）============ */
.de {
  display: inline-flex; align-items: stretch; margin-top: var(--space-5); overflow: hidden;
  font-family: var(--serif-cn); border: 1px solid var(--gold); background: rgba(200, 150, 74, .05);
  transition: background 280ms ease, border-color 280ms ease;
}
.de-text { display: inline-flex; align-items: center; gap: 9px; padding: 12px 17px; }
.de .de-k { color: var(--gold-bright); font-size: 13px; letter-spacing: .26em; flex-shrink: 0; }
.de .de-sep { color: var(--gold-deep); flex-shrink: 0; }
.de .de-t { color: var(--ink); font-size: 14.5px; letter-spacing: .04em; }
.de .de-go {
  flex-shrink: 0; width: 42px; align-self: stretch; display: inline-flex; align-items: center; justify-content: center;
  background: var(--gold); color: var(--bg); font-family: var(--serif-en); font-size: 17px; line-height: 1;
  transition: background 280ms ease;
}
.de:hover { background: rgba(200, 150, 74, .12); border-color: var(--gold-bright); }
.de:hover .de-go { background: var(--gold-bright); }
.de:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) { .de, .de .de-go { transition: none; } }
@media (max-width: 640px) { .de-text { padding: 10px 13px; } .de .de-t { font-size: 13.5px; } .de .de-go { width: 38px; } }

/* "next law" jump link */
.tool-card-next {
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid var(--line);
  text-align: right;
}

.tool-card-next a {
  font-family: var(--serif-cn);
  font-size: 13px;
  color: var(--ink-dim);
  letter-spacing: 0.25em;
  transition: color 300ms ease;
}

.tool-card-next a::after { content: ' →'; font-family: var(--serif-en); transition: transform 300ms ease; display: inline-block; }
.tool-card-next a:hover { color: var(--gold-bright); }
.tool-card-next a:hover::after { transform: translateX(4px); }

/* WIP placeholder — for laws not yet fully written */
.tool-section.wip {
  padding: var(--space-3) var(--space-4);
  border: 1px dashed var(--line-bright);
  background: rgba(200, 150, 74, 0.03);
}

.tool-section.wip .tool-section-body {
  color: var(--ink-faint);
  font-style: italic;
  font-size: 14px;
}

/* ================================================================
   Constituents list — "What · 构成" section
   The sub-laws / pillars that make up a law.
   ================================================================ */
.constituents-list {
  list-style: none;
  padding: 0;
  margin-top: var(--space-3);
  display: flex;
  flex-direction: column;
}

.constituents-list li {
  display: grid;
  grid-template-columns: 40px 1fr;
  gap: var(--space-3);
  padding: 14px 0;
  border-bottom: 1px dashed var(--line);
  align-items: start;
}

.constituents-list li:last-child {
  border-bottom: none;
}

.constituent-mark {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding-top: 5px;
  text-align: center;
  border-right: 1px solid var(--line);
  padding-right: var(--space-2);
}

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

.constituent-name {
  font-family: var(--serif-cn);
  font-weight: 500;
  font-size: 17px;
  color: var(--ink);
  letter-spacing: 0.18em;
  margin-bottom: 6px;
}

.constituent-name .en {
  font-family: var(--serif-en);
  font-style: italic;
  font-weight: 400;
  font-size: 13px;
  color: var(--ink-dim);
  margin-left: 12px;
  letter-spacing: 0.04em;
}

.constituent-line {
  font-family: var(--serif-cn);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
}

.constituent-line::before {
  content: '「';
  color: var(--gold);
  margin-right: 0.1em;
}
.constituent-line::after {
  content: '」';
  color: var(--gold);
  margin-left: 0.1em;
}

.constituent-line strong { color: var(--ink); font-weight: 400; }