/* =========================================================
   DECISION ANALYSIS
   ========================================================= */

/* =========================================================
   PAGE LAYOUT
   ========================================================= */

.page-shell {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 24px 20px 70px;
}


/* =========================================================
   TOP NAVIGATION
   ========================================================= */

.page-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;

  max-width: 940px;
  margin: 0 auto;
  padding: 12px 0 24px;
}

.page-nav a {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
  text-decoration: none;
}

.page-nav a:hover {
  color: var(--fg);
}


/* =========================================================
   HERO
   ========================================================= */

.document-hero {
  max-width: 900px;
  margin: 0 auto;
  padding: 42px 0 34px;

  text-align: center;
}

.document-hero .section-kicker {
  margin-bottom: 18px;
}

.document-hero h1 {
  max-width: 860px;
  margin: 0 auto;

  color: var(--fg);
  font-size: clamp(2.4rem, 7vw, 4.8rem);
  line-height: 1.04;
  letter-spacing: -0.05em;
}

.hero-lead {
  max-width: 760px;
  margin: 22px auto 0;

  color: #d3d3d3;
  font-size: clamp(1.05rem, 2.3vw, 1.24rem);
  line-height: 1.65;
}

.hero-context {
  max-width: 720px;
  margin: 16px auto 0;

  color: var(--muted);
  font-size: 0.93rem;
  line-height: 1.65;
}


/* =========================================================
   MOBILE HEADER
   ========================================================= */

@media (max-width: 720px) {

  .page-shell {
    padding: 14px 14px 48px;
  }

  .page-nav {
    padding-bottom: 18px;
  }

  .document-hero {
    padding: 32px 0 26px;
  }

  .document-hero h1 {
    font-size: clamp(2.1rem, 10vw, 3.3rem);
  }

}

.analysis-section,
.decision-conclusion,
.source-significance {
  max-width: 820px;
  margin: 64px auto 0;
  padding-top: 34px;

  border-top: 1px solid var(--line);
}

.analysis-section > h2,
.decision-conclusion > h2,
.source-significance > h2 {
  margin: 0 0 22px;

  color: var(--fg);
  font-size: clamp(1.65rem, 3.6vw, 2.45rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
}

.analysis-section > p:not(.section-kicker),
.decision-conclusion > p:not(.section-kicker) {
  color: #d0d0d0;
  line-height: 1.72;
}


/* Principle */

.analysis-principle {
  margin: 30px 0;
  padding: 24px;

  background: #f5f5f5;
  border-radius: 12px;

  text-align: center;
}

.analysis-principle strong {
  display: block;

  color: #050505;
  font-size: 1.15rem;
}

.analysis-principle span {
  display: block;
  margin-top: 10px;

  color: #444;
  font-size: 0.82rem;
}


/* Logic chain */

.logic-chain {
  max-width: 650px;
  margin: 32px auto;
}

.logic-step {
  padding: 18px 20px;

  background: #0b0b0b;
  border: 1px solid #3b3b3b;
  border-radius: 10px;

  text-align: center;
}

.logic-step span {
  display: block;

  color: #777;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.logic-step strong {
  display: block;
  margin-top: 6px;

  color: var(--fg);
}

.logic-arrow {
  margin: 7px 0;

  color: #666;
  text-align: center;
}


/* Questions */

.analysis-question {
  margin: 30px 0;
  padding: 22px 24px;

  background: #101010;
  border: 1px solid #444;
  border-radius: 12px;
}

.analysis-question > span {
  display: block;
  margin-bottom: 10px;

  color: #777;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.analysis-question p {
  margin: 0;

  color: var(--fg);
  line-height: 1.65;
}


/* Alternatives */

.alternatives-grid,
.impact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;

  margin-top: 30px;
}

.alternative-card,
.impact-grid > div {
  padding: 20px;

  background: #0b0b0b;
  border: 1px solid #343434;
  border-radius: 10px;
}

.alternative-card strong,
.impact-grid strong {
  display: block;

  color: var(--fg);
}

.alternative-card span,
.impact-grid span {
  display: block;
  margin-top: 8px;

  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.5;
}


/* Proportionality */

.key-question {
  margin: 30px 0;
  padding: 27px 28px;

  background: #f5f5f5;
  border-radius: 12px;
}

.key-question p {
  margin: 0;

  color: #050505;
  font-size: clamp(1.08rem, 2.5vw, 1.28rem);
  font-weight: 700;
  line-height: 1.55;
  text-align: center;
}


/* Participation */

.source-quote {
  margin: 28px 0;
  padding: 22px 24px;

  background: #101010;
  border-left: 3px solid #f5f5f5;
}

.source-quote p {
  margin: 0;

  color: var(--fg);
  line-height: 1.6;
}

.source-quote cite {
  display: block;
  margin-top: 12px;

  color: var(--muted);
  font-size: 0.78rem;
  font-style: normal;
}

.participation-stat {
  max-width: 380px;
  margin: 30px auto;
  padding: 28px 22px;

  background: #0b0b0b;
  border: 1px solid #444;
  border-radius: 12px;

  text-align: center;
}

.participation-stat strong {
  display: block;

  color: var(--fg);
  font-size: clamp(3rem, 8vw, 5rem);
  line-height: 1;
}

.participation-stat span,
.participation-stat small {
  display: block;
  margin-top: 8px;
}

.participation-stat span {
  color: var(--fg);
  font-weight: 750;
}

.participation-stat small {
  color: var(--muted);
}


/* Traceability */

.traceability-chain {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 10px;

  margin: 32px 0;
}

.traceability-chain div {
  flex: 1;
  padding: 16px 12px;

  background: #0b0b0b;
  border: 1px solid #343434;
  border-radius: 9px;

  text-align: center;
}

.traceability-chain span {
  display: block;

  color: #777;
  font-size: 0.67rem;
  text-transform: uppercase;
}

.traceability-chain strong {
  display: block;
  margin-top: 6px;

  color: var(--fg);
  font-size: 0.83rem;
}

.traceability-chain b {
  align-self: center;

  color: #666;
  font-weight: 400;
}


/* Conclusion */

.decision-conclusion blockquote {
  margin: 30px 0;
  padding: 26px;

  background: #f5f5f5;
  border-radius: 12px;

  text-align: center;
}

.decision-conclusion blockquote p {
  margin: 0;

  color: #333;
  line-height: 1.6;
}

.decision-conclusion blockquote strong {
  display: block;
  margin-top: 8px;

  color: #050505;
  font-size: 1.1rem;
  line-height: 1.55;
}

.decision-final-principle {
  margin-top: 28px;
  padding: 22px;

  background: #101010;
  border: 1px solid #444;
  border-radius: 10px;

  text-align: center;
}

.decision-final-principle strong,
.decision-final-principle span {
  display: block;
}

.decision-final-principle strong {
  color: var(--fg);
}

.decision-final-principle span {
  margin-top: 8px;

  color: var(--muted);
  font-size: 0.88rem;
}


/* Mobile */

@media (max-width: 720px) {

  .alternatives-grid,
  .impact-grid {
    grid-template-columns: 1fr;
  }

  .traceability-chain {
    flex-direction: column;
  }

  .traceability-chain b {
    transform: rotate(90deg);
  }

}