.bc-page h1 { font-size: 30px; color: #16324f; border-bottom: 3px solid #2e7d6b; padding-bottom: 10px; margin-bottom: 6px; }
  .bc-page .bc-sub { color: #6b7680; margin-bottom: 24px; font-size: 14px; }
  .bc-page h2 { font-size: 21px; color: #fff; background: #16324f; margin-top: 40px; margin-bottom: 14px; padding: 8px 14px; border-radius: 6px; }
  .bc-page h3 { font-size: 16px; color: #16324f; margin-top: 18px; margin-bottom: 6px; }
  .bc-page h4 { font-size: 14px; color: #2e7d6b; margin: 10px 0 3px; }
  .bc-page p { margin: 6px 0; }
  .bc-page ul { margin: 6px 0; padding-left: 20px; }
  .bc-page li { margin: 3px 0; }
  .bc-qa { background: #eef2f0; border-left: 4px solid #2e7d6b; padding: 6px 12px; margin-top: 22px; border-radius: 0 6px 6px 0; }
  .bc-qa strong { color: #16324f; }
  .bc-card { background: #ffffff; border: 1px solid #e3e0d8; border-radius: 8px; padding: 14px 18px; margin: 10px 0; }
  .bc-two-col { display: flex; gap: 16px; flex-wrap: wrap; }
  .bc-two-col .bc-card { flex: 1; min-width: 240px; }
  .bc-three-col { display: flex; gap: 12px; flex-wrap: wrap; }
  .bc-three-col .bc-card { flex: 1; min-width: 200px; }

  /* Process loop diagram */
  .bc-loop-wrap { display: flex; flex-direction: column; align-items: center; margin: 22px 0 8px; }
  .bc-loop-row { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 6px; }
  .bc-step { background: linear-gradient(160deg, #2e7d6b, #1f5b4e); color: #fff; border-radius: 10px; padding: 14px 16px; width: 130px; text-align: center; font-size: 13px; font-weight: 600; box-shadow: 0 2px 5px rgba(0,0,0,0.15); }
  .bc-step span { display: block; font-size: 11px; font-weight: 400; opacity: 0.85; margin-top: 4px; }
  .bc-arrow { font-size: 22px; color: #2e7d6b; padding: 0 4px; }
  .bc-loop-back { margin-top: 14px; display: flex; align-items: center; gap: 8px; color: #b5502f; font-weight: 600; font-size: 13px; }
  .bc-loop-back .circle-arrow { font-size: 20px; }

  /* Table */
  .bc-table-wrap { overflow-x: auto; margin: 12px 0; }
  .bc-table { border-collapse: collapse; width: 100%; min-width: 520px; }
  .bc-table th, .bc-table td { border: 1px solid #e3e0d8; padding: 8px 10px; text-align: left; }
  .bc-table th { background: #16324f; color: #fff; font-weight: 600; }
  .bc-table tr:nth-child(even) td { background: #f5f3ee; }
  .bc-spectrum { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 12px; margin: 10px 0; }
  .bc-spectrum .end { font-weight: 700; color: #16324f; }
  .bc-spectrum .country { background: #eef0ea; border-radius: 5px; padding: 3px 7px; }

  /* 7 C's diagram */
  .bc-sevenc-wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin: 20px 0; }
  .bc-sevenc { width: 96px; height: 96px; border-radius: 50%; background: radial-gradient(circle at 30% 30%, #3f9683, #16324f); color: #fff; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 12.5px; font-weight: 700; padding: 6px; box-shadow: 0 2px 5px rgba(0,0,0,0.2); }

  /* Listening steps */
  .bc-steps-h { display: flex; flex-wrap: wrap; align-items: center; justify-content: center; gap: 4px; margin: 18px 0; }
  .bc-steps-h .bc-step-num { background: #fff; border: 2px solid #2e7d6b; color: #16324f; border-radius: 8px; padding: 10px 12px; width: 120px; text-align: center; font-size: 12.5px; font-weight: 600; }
  .bc-steps-h .bc-step-num .num { display: block; font-size: 20px; color: #2e7d6b; font-weight: 800; }

  /* Team evolution timeline */
  .bc-timeline { position: relative; margin: 26px 0 10px; padding-left: 20px; border-left: 3px solid #2e7d6b; }
  .bc-timeline-item { position: relative; margin-bottom: 18px; padding-left: 16px; }
  .bc-timeline-item::before { content: ""; position: absolute; left: -27px; top: 3px; width: 12px; height: 12px; border-radius: 50%; background: #2e7d6b; border: 2px solid #fff; box-shadow: 0 0 0 2px #2e7d6b; }
  .bc-timeline-item h4 { margin: 0 0 3px; color: #16324f; }
  .bc-timeline-item p { margin: 0; color: #45525c; }

  /* Barrier grid */
  .bc-barrier-grid { display: flex; flex-wrap: wrap; gap: 10px; }
  .bc-barrier-grid .bc-mini { flex: 1; min-width: 200px; background: #fff; border: 1px solid #e3e0d8; border-radius: 8px; padding: 10px 12px; }
  .bc-barrier-grid .bc-mini h4 { margin: 0 0 4px; }
  .bc-barrier-grid .bc-mini p { margin: 0; color: #45525c; }

  @media (max-width: 700px) {
    .bc-arrow { display: none; }
    .bc-loop-row { flex-direction: column; }
    .bc-steps-h .bc-step-num { width: 100px; }
  }

  /* Format / structure list (memo, notice, report) */
  .bc-format-list { list-style: none; padding-left: 0; margin: 10px 0; }
  .bc-format-list li { background: #eef2f0; border-left: 3px solid #2e7d6b; padding: 6px 10px; margin: 4px 0; border-radius: 0 5px 5px 0; }

  /* Glossary */
  .bc-glossary { columns: 1; }
  .bc-glossary dt { font-weight: 700; color: #16324f; margin-top: 8px; }
  .bc-glossary dd { margin: 0 0 2px 0; color: #45525c; }
  @media (min-width: 640px) {
    .bc-glossary { columns: 2; column-gap: 24px; }
    .bc-glossary dt, .bc-glossary dd { break-inside: avoid; }
  }

  /* Abbreviations */
  .bc-abbr-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 4px 14px; }
  .bc-abbr-grid .abbr-item { padding: 3px 0; border-bottom: 1px dashed #e3e0d8; }
  .bc-abbr-grid .abbr-item b { color: #16324f; }
  
  body.dark-mode .bc-page h1 { color: var(--ens-ink, #ffffff); border-bottom-color: #6c757d; }
  body.dark-mode .bc-page .bc-sub { color: var(--ens-muted, #aaaaaa); }
  body.dark-mode .bc-page h2 { color: var(--ens-ink, #ffffff); background: #1e293b; }
  body.dark-mode .bc-page h3 { color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-page h4 { color: #66b2ff; }
  body.dark-mode .bc-qa { background: var(--ens-bg-soft, #2c2c2c); border-left-color: #6c757d; }
  body.dark-mode .bc-qa strong { color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-card { background: var(--ens-bg-soft, #2c2c2c); border-color: var(--ens-line, #444444); }
  body.dark-mode .bc-step { background: linear-gradient(160deg, #495057, #343a40); color: #ffffff; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.6); }
  body.dark-mode .bc-arrow { color: #6c757d; }
  body.dark-mode .bc-loop-back { color: #ff6b6b; }
  body.dark-mode .bc-table th, body.dark-mode .bc-table td { border-color: var(--ens-line, #444444); }
  body.dark-mode .bc-table th { background: #1e293b; color: #ffffff; }
  body.dark-mode .bc-table tr:nth-child(even) td { background: var(--ens-bg, #1a1a1a); }
  body.dark-mode .bc-spectrum .end { color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-spectrum .country { background: var(--ens-bg-soft, #2c2c2c); color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-sevenc { background: radial-gradient(circle at 30% 30%, #495057, #1e293b); color: #ffffff; box-shadow: 0 2px 5px rgba(0, 0, 0, 0.6); }
  body.dark-mode .bc-steps-h .bc-step-num { background: var(--ens-bg-soft, #2c2c2c); border-color: #6c757d; color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-steps-h .bc-step-num .num { color: #66b2ff; }
  body.dark-mode .bc-timeline { border-left-color: #6c757d; }
  body.dark-mode .bc-timeline-item::before { background: #6c757d; border-color: var(--ens-bg-soft, #2c2c2c); box-shadow: 0 0 0 2px #6c757d; }
  body.dark-mode .bc-timeline-item h4 { color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-timeline-item p { color: var(--ens-muted, #aaaaaa); }
  body.dark-mode .bc-barrier-grid .bc-mini { background: var(--ens-bg-soft, #2c2c2c); border-color: var(--ens-line, #444444); }
  body.dark-mode .bc-barrier-grid .bc-mini p { color: var(--ens-muted, #aaaaaa); }
  body.dark-mode .bc-format-list li { background: var(--ens-bg-soft, #2c2c2c); border-left-color: #6c757d; color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-glossary dt { color: var(--ens-ink, #ffffff); }
  body.dark-mode .bc-glossary dd { color: var(--ens-muted, #aaaaaa); }
  body.dark-mode .bc-abbr-grid .abbr-item { border-bottom-color: var(--ens-line, #444444); color: var(--ens-muted, #aaaaaa); }
  body.dark-mode .bc-abbr-grid .abbr-item b { color: var(--ens-ink, #ffffff); }