/* =========================================================
   Cooperation landing + child pages
   (page-hop-tac.php, page-hop-tac-quoc-te.php,
    page-hop-tac-trong-nuoc.php, page-hop-tac-mang-luoi.php)
========================================================= */

.cooperation-page {
  background: #f6f8fc;
  color: var(--text-main);
}

/* ---- Intro / shared metrics ---- */
.cooperation-intro {
  padding: 56px 0 64px;
}

.cooperation-intro-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  margin-inline: auto;
  text-align: center;
}

.cooperation-intro-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  color: var(--iu-blue-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cooperation-intro h2 {
  margin: 0;
  color: var(--iu-blue-950);
  font-size: clamp(1.85rem, 3.1vw, 2.6rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1.15;
}

.cooperation-intro-inner > p {
  max-width: 720px;
  margin: 8px auto 0;
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.7;
}

.cooperation-stat-row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  width: 100%;
  max-width: 1040px;
  margin: 28px auto 0;
  padding: 0;
  list-style: none;
}

.cooperation-stat-row li {
  padding: 22px 18px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: left;
}

.cooperation-stat-row strong {
  display: block;
  color: var(--iu-blue-800);
  font-size: clamp(1.55rem, 2.3vw, 2rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

.cooperation-stat-row span {
  display: block;
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.45;
}

/* ---- Overview cards (parent landing only) ---- */
.cooperation-section-header {
  max-width: 760px;
  margin: 0 auto 32px;
  text-align: center;
}

.cooperation-section-kicker {
  margin: 0 0 10px;
  color: var(--iu-blue-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cooperation-section-header h2 {
  margin: 0;
  color: var(--iu-blue-950);
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.cooperation-overview-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.cooperation-overview-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  height: 100%;
  padding: 28px 26px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.cooperation-overview-card:hover {
  transform: translateY(-3px);
  border-color: rgba(11, 94, 215, 0.4);
  box-shadow: 0 22px 48px rgba(6, 72, 168, 0.12);
}

.cooperation-overview-card-index {
  margin: 0;
  color: var(--iu-blue-700);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cooperation-overview-card h3 {
  margin: 0;
  color: var(--iu-blue-950);
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.cooperation-overview-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.cooperation-overview-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--iu-blue-700);
  font-weight: 800;
  font-size: 0.9rem;
  letter-spacing: 0.01em;
}

.cooperation-overview-link:hover {
  color: var(--iu-blue-900);
}

.cooperation-overview-link:hover span {
  transform: translateX(3px);
}

.cooperation-overview-link span {
  transition: transform 0.22s ease;
}

/* ---- Shell ---- */
.cooperation-shell {
  width: min(calc(100% - var(--iu-container-offset)), var(--iu-container-max));
  margin-inline: auto;
  padding: 0 0 72px;
}

.cooperation-lead-paragraph {
  /* max-width: 880px; */
  margin: 22px 0 0;
  color: var(--text-main);
  font-size: 1.02rem;
  font-weight: 600;
  line-height: 1.7;
}

/* ---- Side tabs (switch between child pages) ---- */
.cooperation-side-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding: 8px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 999px;
  box-shadow: var(--shadow-sm);
}

.cooperation-side-tab {
  flex: 1 1 auto;
  text-align: center;
  padding: 11px 22px;
  border-radius: 999px;
  color: var(--iu-blue-900);
  font-size: 0.93rem;
  font-weight: 800;
  letter-spacing: -0.005em;
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}

.cooperation-side-tab:hover {
  background: var(--iu-blue-50);
}

.cooperation-side-tab.is-active {
  background: linear-gradient(135deg, var(--iu-blue-700), var(--iu-blue-900));
  color: #fff;
  box-shadow: 0 12px 28px rgba(20, 121, 255, 0.28);
}

/* ---- Layout: side nav + detail ---- */
.cooperation-layout {
  display: block;
  margin-top: 26px;
}

.cooperation-side-nav {
  position: sticky;
  top: 24px;
  align-self: start;
  padding: 22px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.cooperation-side-nav-label {
  margin: 0 0 12px;
  color: var(--iu-blue-700);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.cooperation-side-nav ul {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cooperation-side-nav a {
  display: block;
  padding: 9px 12px;
  border-radius: 10px;
  color: var(--text-main);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
  transition: background 0.18s ease, color 0.18s ease;
}

.cooperation-side-nav a:hover {
  background: var(--iu-blue-50);
  color: var(--iu-blue-900);
}

.cooperation-side-nav a.is-active {
  background: var(--iu-blue-700);
  color: #fff;
  box-shadow: 0 6px 18px -10px rgba(0, 76, 151, 0.6);
}

.cooperation-detail {
  display: flex;
  flex-direction: column;
  gap: 22px;
  min-width: 0;
  padding: 30px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ---- Subsection blocks ---- */
.cooperation-block {
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 22px 24px;
  background: var(--bg-body);
  border: 1px solid var(--border-soft);
  border-radius: 18px;
}

.cooperation-block-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-soft);
}

.cooperation-block-index {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--iu-blue-700);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.02em;
}

.cooperation-block-header h4 {
  margin: 0;
  color: var(--iu-blue-950);
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.cooperation-block p {
  margin: 0;
  color: var(--text-main);
  font-size: 0.98rem;
  line-height: 1.7;
}

.cooperation-block h5 {
  margin: 4px 0 4px;
  color: var(--iu-blue-900);
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.005em;
}

/* ---- Cards ---- */
.cooperation-card {
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
}

.cooperation-card h5 {
  margin: 0 0 10px;
  color: var(--iu-blue-900);
  font-size: 0.95rem;
  font-weight: 800;
}

.cooperation-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.6;
}

.cooperation-card--accent {
  background: linear-gradient(135deg, rgba(11, 94, 215, 0.06), rgba(6, 72, 168, 0.02));
  border-color: rgba(11, 94, 215, 0.2);
}

.cooperation-panels {
  display: grid;
  gap: 14px;
}

.cooperation-panels--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

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

/* ---- Lists ---- */
.cooperation-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 0;
  padding: 0;
  list-style: none;
}

.cooperation-chip-list li {
  padding: 8px 14px;
  background: var(--iu-blue-50);
  border: 1px solid rgba(11, 94, 215, 0.14);
  border-radius: 999px;
  color: var(--iu-blue-900);
  font-size: 0.88rem;
  font-weight: 700;
  line-height: 1.3;
}

.cooperation-chip-list--small li {
  padding: 6px 12px;
  font-size: 0.82rem;
}

.cooperation-accreditation-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px 24px;
  margin: 14px 0 0;
  padding: 0;
}

.cooperation-accreditation-list dt {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  margin: 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(15, 23, 42, 0.08);
  color: var(--iu-blue-900);
  font-weight: 800;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
}

.cooperation-accreditation-list dt:first-of-type {
  padding-top: 0;
  border-top: 0;
}

.cooperation-accreditation-name {
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.86rem;
  letter-spacing: 0;
}

.cooperation-accreditation-list dd {
  margin: 4px 0 0;
  color: var(--text-main);
  font-size: 0.92rem;
  line-height: 1.55;
}

@media (min-width: 720px) {
  .cooperation-accreditation-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }

  .cooperation-accreditation-list dt {
    border-top: 0;
    padding-top: 0;
  }

  .cooperation-accreditation-list dt:nth-of-type(odd) {
    border-top: 1px dashed rgba(15, 23, 42, 0.08);
    padding-top: 10px;
  }

  .cooperation-accreditation-list dt:nth-of-type(1),
  .cooperation-accreditation-list dt:nth-of-type(2) {
    border-top: 0;
    padding-top: 0;
  }
}

.cooperation-pill-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.cooperation-pill-list li {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  color: var(--text-main);
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.4;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.cooperation-pill-list li::before {
  content: "";
  display: none;
}

.cooperation-pill-list li:hover {
  transform: translateY(-2px);
  border-color: var(--iu-blue-300);
  box-shadow: 0 10px 24px -16px rgba(20, 50, 110, 0.35);
}

/* Compact chip variant (no avatar, for topics/cities) */
.cooperation-pill-list--chips {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.cooperation-pill-list--chips li {
  padding: 8px 14px;
  font-size: 0.86rem;
  font-weight: 600;
  background: var(--iu-blue-50, rgba(11, 94, 215, 0.06));
  border: 1px solid rgba(11, 94, 215, 0.15);
  border-radius: 999px;
  color: var(--iu-blue-900);
  text-align: center;
  justify-content: center;
}

.cooperation-pill-list--chips li:hover {
  transform: none;
  box-shadow: none;
  background: rgba(11, 94, 215, 0.1);
}

/* ---- Organization card grid (no bullets) ---- */
.cooperation-org-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
}

.cooperation-org-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.cooperation-org-card:hover {
  transform: translateY(-2px);
  border-color: var(--iu-blue-300);
  box-shadow: 0 10px 24px -16px rgba(20, 50, 110, 0.35);
}

.cooperation-org-mark {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--iu-blue-900), var(--iu-blue-700));
  color: #fff;
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.cooperation-org-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
  gap: 2px;
}

.cooperation-org-name {
  color: var(--text-main);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.35;
  word-break: break-word;
}

.cooperation-org-country {
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.cooperation-bullet-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.cooperation-bullet-list li {
  position: relative;
  padding: 0 0 0 22px;
  color: var(--text-main);
  font-size: 0.93rem;
  line-height: 1.55;
}

.cooperation-bullet-list li::before {
  content: "";
  position: absolute;
  top: 0.45em;
  left: 4px;
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--iu-blue-700);
  transform: rotate(45deg);
}

.cooperation-bullet-meta {
  display: block;
  margin-top: 2px;
  color: var(--text-muted);
  font-size: 0.82rem;
  font-weight: 500;
}

.cooperation-note {
  margin: 6px 0 0;
  padding: 14px 18px;
  background: rgba(244, 180, 0, 0.1);
  border-left: 4px solid var(--iu-gold);
  border-radius: 10px;
  color: #5a4200;
  font-size: 0.93rem;
  font-style: italic;
  line-height: 1.6;
}

/* ---- Table ---- */
.cooperation-table-wrap {
  overflow-x: auto;
  margin: 8px 0 0;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
}

.cooperation-table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
  font-size: 0.93rem;
}

.cooperation-table thead th {
  background: var(--iu-blue-50);
  color: var(--iu-blue-900);
  text-align: left;
  padding: 12px 16px;
  font-weight: 800;
  font-size: 0.84rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border-soft);
}

.cooperation-table tbody th {
  padding: 12px 16px;
  width: 38%;
  color: var(--iu-blue-800);
  font-weight: 800;
  border-bottom: 1px solid var(--border-soft);
}

.cooperation-table tbody td {
  padding: 12px 16px;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-soft);
  vertical-align: top;
}

.cooperation-table--programs {
  min-width: 880px;
  table-layout: fixed;
}

.cooperation-table--programs tbody th,
.cooperation-table--programs tbody td {
  width: auto;
}

.cooperation-row-continent {
  background: var(--iu-blue-50);
  color: var(--iu-blue-900);
  font-weight: 800;
  text-align: center;
  vertical-align: middle;
  letter-spacing: 0.02em;
  border-right: 1px solid var(--border-soft);
}

.cooperation-row-school {
  color: var(--text-main);
  font-weight: 700;
  vertical-align: middle;
  background: rgba(15, 23, 42, 0.02);
  border-right: 1px solid var(--border-soft);
}

.cooperation-program-type {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(11, 94, 215, 0.08);
  color: var(--iu-blue-700);
  font-weight: 700;
  font-size: 0.82rem;
  white-space: nowrap;
}

.cooperation-program-type:empty {
  display: none;
}

.cooperation-table tbody tr:last-child th,
.cooperation-table tbody tr:last-child td {
  border-bottom: 0;
}

.cooperation-table tbody tr:nth-child(even) {
  background: rgba(15, 23, 42, 0.02);
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .cooperation-stat-row,
  .cooperation-overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cooperation-panels--two,
  .cooperation-card-grid,
  .cooperation-region-grid {
    grid-template-columns: 1fr;
  }

  .cooperation-layout {
    grid-template-columns: 1fr;
  }

  .cooperation-side-nav {
    position: static;
  }
}

@media (max-width: 760px) {
  .cooperation-intro {
    padding: 40px 0 48px;
  }

  .cooperation-detail {
    padding: 22px 20px;
  }

  .cooperation-block {
    padding: 18px 18px;
  }

  .cooperation-side-tab {
    padding: 10px 16px;
    font-size: 0.86rem;
  }

  .cooperation-block-header {
    flex-wrap: wrap;
  }
}

@media (max-width: 520px) {
  .cooperation-stat-row,
  .cooperation-overview-grid,
  .cooperation-org-grid {
    grid-template-columns: 1fr;
  }

  .cooperation-table thead {
    display: none;
  }

  .cooperation-table,
  .cooperation-table tbody,
  .cooperation-table tr,
  .cooperation-table th,
  .cooperation-table td {
    display: block;
    width: 100%;
  }

  .cooperation-table tr {
    border-bottom: 1px solid var(--border-soft);
  }

  .cooperation-table tbody th {
    width: auto;
    background: var(--iu-blue-50);
    border-bottom: none;
  }

  .cooperation-table tbody td {
    border-bottom: none;
    padding-top: 0;
  }
}

/* ============================================================
   Domestic cooperation page (trong-nuoc) — extra components
   ============================================================ */

/* ---- Stat row (4 quick stats) ---- */
.cooperation-stat {
  padding: 22px 20px;
  background: linear-gradient(135deg, #fff, rgba(11, 94, 215, 0.04));
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.cooperation-stat::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 3px;
  background: linear-gradient(90deg, var(--iu-blue-700), var(--iu-blue-900));
  opacity: 0;
  transition: opacity 0.18s ease;
}

.cooperation-stat:hover {
  transform: translateY(-14px);
  box-shadow: 0 14px 28px -16px rgba(20, 50, 110, 0.4);
}

.cooperation-stat:hover::after {
  opacity: 1;
}

.cooperation-stat-value {
  display: block;
  color: var(--iu-blue-800);
  font-size: clamp(1.7rem, 2.5vw, 2.2rem);
  font-weight: 900;
  font-feature-settings: "tnum";
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.cooperation-stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.88rem;
  font-weight: 600;
  line-height: 1.4;
}

/* ---- Partner type overview cards (4 types) ---- */
.cooperation-partner-types {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}

.cooperation-partner-type {
  padding: 18px 18px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-left: 4px solid var(--iu-blue-700);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.cooperation-partner-type:hover {
  transform: translateY(-14px);
  box-shadow: 0 14px 28px -16px rgba(20, 50, 110, 0.4);
}

.cooperation-partner-type-num {
  color: var(--iu-blue-700);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.cooperation-partner-type-label {
  color: var(--iu-blue-950);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.3;
}

.cooperation-partner-type-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.5;
}

/* ---- Timeline (for activities) ---- */
.cooperation-timeline {
  list-style: none;
  margin: 18px 0 0;
  padding: 0 0 0 0;
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.cooperation-timeline::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--iu-blue-700), var(--iu-blue-300, rgba(11, 94, 215, 0.35)));
  border-radius: 2px;
}

.cooperation-timeline-item {
  position: relative;
  padding-left: 36px;
}

.cooperation-timeline-dot {
  position: absolute;
  left: 4px;
  top: 18px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: #fff;
  border: 3px solid var(--iu-blue-700);
  box-shadow: 0 0 0 4px rgba(11, 94, 215, 0.12);
}

.cooperation-timeline-card {
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  box-shadow: 0 4px 14px rgba(15, 23, 42, 0.04);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.cooperation-timeline-card:hover {
  transform: translateX(4px);
  box-shadow: 0 10px 24px -12px rgba(20, 50, 110, 0.3);
}

.cooperation-timeline-card h5 {
  margin: 0 0 6px;
  color: var(--iu-blue-950);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1.35;
}

.cooperation-timeline-card p {
  margin: 0;
  color: var(--text-main);
  font-size: 0.92rem;
  line-height: 1.6;
}

/* ---- Pillar grid (4 connection pillars with icons) ---- */
.cooperation-pillar-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 0;
}

.cooperation-pillar {
  display: flex;
  gap: 14px;
  padding: 20px;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.cooperation-pillar:hover {
  transform: translateY(-14px);
  border-color: var(--iu-blue-300);
  box-shadow: 0 14px 28px -16px rgba(20, 50, 110, 0.4);
}

.cooperation-pillar-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--iu-blue-900), var(--iu-blue-700));
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.cooperation-pillar-icon svg {
  width: 22px;
  height: 22px;
}

.cooperation-pillar-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
}

.cooperation-pillar-body h5 {
  margin: 0;
  color: var(--iu-blue-950);
  font-size: 0.98rem;
  font-weight: 800;
  line-height: 1.3;
}

.cooperation-pillar-body p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.55;
}

/* ---- CTA grid (call to action) ---- */
.cooperation-cta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0 0;
}

.cooperation-cta-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 22px 22px;
  background: linear-gradient(135deg, var(--iu-blue-900), var(--iu-blue-700));
  border-radius: 14px;
  color: #fff;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.cooperation-cta-card::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: 22px;
  transform: translateY(-50%);
  font-size: 1.4rem;
  font-weight: 800;
  opacity: 0.7;
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.cooperation-cta-card:hover {
  transform: translateY(-14px);
  box-shadow: 0 16px 32px -16px rgba(20, 50, 110, 0.5);
  color: #fff;
}

.cooperation-cta-card:hover::after {
  transform: translateY(-50%) translateX(4px);
  opacity: 1;
}

.cooperation-cta-card--secondary {
  background: #fff;
  border: 1px solid var(--border-soft);
  color: var(--iu-blue-950);
}

.cooperation-cta-card--secondary::after {
  color: var(--iu-blue-700);
}

.cooperation-cta-card--secondary:hover {
  border-color: var(--iu-blue-300);
  color: var(--iu-blue-950);
}

.cooperation-cta-card-eyebrow {
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  opacity: 0.85;
}

.cooperation-cta-card--secondary .cooperation-cta-card-eyebrow {
  color: var(--iu-blue-700);
  opacity: 1;
}

.cooperation-cta-card-title {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.35;
  padding-right: 32px;
}

.cooperation-cta-card-meta {
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0.85;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
}

.cooperation-cta-card--secondary .cooperation-cta-card-meta {
  color: var(--text-muted);
  opacity: 1;
  font-family: inherit;
}

/* ---- Responsive for new components ---- */
@media (max-width: 880px) {
  .cooperation-pillar-grid,
  .cooperation-cta-grid,
  .cooperation-partner-types {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .cooperation-pillar-grid,
  .cooperation-cta-grid,
  .cooperation-partner-types {
    grid-template-columns: 1fr;
  }

  .cooperation-timeline-item {
    padding-left: 28px;
  }

  .cooperation-timeline-dot {
    width: 12px;
    height: 12px;
    left: 4px;
  }

  .cooperation-timeline::before {
    left: 9px;
  }
}

/* ============================================================
   Section 3.1 — Continent cards (international network)
   ============================================================ */

.cooperation-continent-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 18px 0 0;
}

@media (min-width: 880px) {
  .cooperation-continent-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.cooperation-continent {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--border-soft);
  border-radius: 16px;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.cooperation-continent:hover {
  transform: translateY(-14px);
  border-color: var(--iu-blue-300);
  box-shadow: 0 16px 32px -18px rgba(20, 50, 110, 0.4);
}

.cooperation-continent-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  background: linear-gradient(135deg, var(--iu-blue-900), var(--iu-blue-700));
  color: #fff;
  position: relative;
}

.cooperation-continent-head::after {
  content: "";
  position: absolute;
  inset: auto 0 -1px 0;
  height: 3px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.35), transparent);
}

.cooperation-continent-icon {
  flex-shrink: 0;
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.14);
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.18);
}

.cooperation-continent-icon svg {
  width: 22px;
  height: 22px;
}

.cooperation-continent-titles {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.cooperation-continent-titles h5 {
  margin: 0;
  color: #fff;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.005em;
  line-height: 1.25;
}

.cooperation-continent-tag {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.01em;
}

.cooperation-continent-count {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 6px 12px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.12);
  line-height: 1.1;
}

.cooperation-continent-count strong {
  color: #fff;
  font-size: 1.25rem;
  font-weight: 900;
  font-feature-settings: "tnum";
}

.cooperation-continent-count span {
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-top: 2px;
}

.cooperation-continent-list {
  display: flex;
  flex-direction: column;
  padding: 8px 0;
}

.cooperation-continent-country {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-soft);
}

.cooperation-continent-country:last-child {
  border-bottom: none;
}

.cooperation-continent-country-label {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  color: var(--iu-blue-950);
  font-size: 0.86rem;
  font-weight: 800;
  letter-spacing: 0.01em;
}

.cooperation-continent-country-count {
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.cooperation-continent-partners {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.cooperation-continent-partners li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-main);
  transition: background 0.18s ease, transform 0.18s ease;
}

.cooperation-continent-partners li:hover {
  background: var(--iu-blue-50, rgba(11, 94, 215, 0.06));
  transform: translateX(3px);
}

.cooperation-continent-mark {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--iu-blue-900), var(--iu-blue-700));
  color: #fff;
  font-size: 0.66rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.15);
}

.cooperation-continent-name {
  line-height: 1.35;
  word-break: break-word;
}