/* ==============================
   RESET & BASE
   ============================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --blue:       #1D3D66;
  --blue-light: #e8eef6;
  --gold:       #c9a84c;
  --white:      #ffffff;
  --off-white:  #f7f8fa;
  --paper:      #f5f0e8;
  --text:       #1a1a2e;
  --text-soft:  #4a5568;
  --text-muted: #8a96a8;
  --border:     #d0d9e8;
}

html, body {
  font-family: 'Montserrat', sans-serif;
  background: var(--white);
  color: var(--text);
}

a { text-decoration: none; color: inherit; }

/* ==============================
   PAGE
   ============================== */
.section-page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ==============================
   STICKY HEADER
   ============================== */
.section-header {
  background: var(--blue);
  padding: 18px 40px;
  position: sticky;
  top: 0;
  z-index: 10;
}

.section-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.section-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.68rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  transition: color 0.2s;
  white-space: nowrap;
}

.section-back:hover { color: var(--white); }

.section-chapter-tag {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  text-align: right;
}

/* ==============================
   CONTENT AREA
   ============================== */
.section-content {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 48px 40px 80px;
}

.section-eyebrow {
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 10px;
}

.section-title {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 16px;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.section-divider {
  width: 48px;
  height: 3px;
  background: var(--gold);
  margin-bottom: 36px;
}

/* ==============================
   BODY TYPOGRAPHY
   ============================== */
.section-body {
  font-size: 0.93rem;
  line-height: 1.9;
  color: var(--text-soft);
  max-width: 860px;
}

.section-body h2 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--blue);
  margin: 36px 0 12px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--blue-light);
}

.section-body h3 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  margin: 24px 0 8px;
}

.section-body p {
  margin-bottom: 14px;
}

.section-body ul,
.section-body ol {
  padding-left: 22px;
  margin-bottom: 14px;
}

.section-body li {
  margin-bottom: 6px;
}

.section-body blockquote {
  border-left: 4px solid var(--blue);
  padding: 14px 20px;
  margin: 22px 0;
  background: var(--blue-light);
  font-style: italic;
  color: var(--blue);
  font-size: 0.9rem;
}

.section-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 22px 0;
  font-size: 0.85rem;
}

.section-body th {
  background: var(--blue);
  color: var(--white);
  padding: 12px 14px;
  text-align: left;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.section-body td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.6;
}

.section-body tr:nth-child(even) td {
  background: var(--off-white);
}

/* ==============================
   BOTTOM NAVIGATION
   ============================== */
.section-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 52px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  gap: 12px;
  max-width: 860px;
}

.section-nav-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  background: var(--blue);
  color: var(--white);
  font-family: 'Montserrat', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: background 0.22s;
}

.section-nav-btn:hover { background: #152d4d; }

/* ==============================
   RESPONSIVE
   ============================== */
@media (max-width: 600px) {
  .section-header { padding: 14px 16px; }
  .section-content { padding: 28px 16px 56px; }
  .section-nav { flex-direction: column; align-items: stretch; }
  .section-nav-btn { justify-content: center; }
}