.hdn-page {
  scroll-behavior: smooth;
}
.hdn-page {
  --hdn-primary: #1b40aa;
  --hdn-primary-dark: #0a3540;
  --hdn-accent: #e36414;
  --hdn-gold: #c9a227;
  --hdn-bg: #f7f5f0;
  --hdn-surface: #ffffff;
  --hdn-text: #1f2937;
  --hdn-muted: #6b7280;
  --hdn-border: #e5e7eb;
  --hdn-radius: 14px;
  --hdn-shadow: 0 10px 30px rgba(15, 76, 92, 0.08);
}
/* ===== NAVBAR ===== */
.hdn-page .hdn-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--hdn-border);
}
.hdn-page .hdn-nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.hdn-page .hdn-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 18px;
  color: var(--hdn-primary);
}
.hdn-page .hdn-brand .hdn-dot {
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--hdn-primary), var(--hdn-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 16px;
}
.hdn-page .hdn-nav-links {
  display: flex;
  gap: 26px;
  list-style: none;
}
.hdn-page .hdn-nav-links a {
  font-size: 14px;
  color: var(--hdn-muted);
  font-weight: 500;
  transition: 0.2s;
}
.hdn-page .hdn-nav-links a:hover {
  color: var(--hdn-primary);
}
@media (max-width: 860px) {
  .hdn-page .hdn-nav-links {
    display: none;
  }
}

/* ===== HERO ===== */
.hdn-page .hdn-hero {
  background:#1b40aa;
  color: #fff;
  padding: 90px 24px 80px;
  text-align: center;
}
.hdn-page .hdn-hero .hdn-tag {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 22px;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.hdn-page .hdn-hero h1 {
  font-size: clamp(30px, 5vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 18px;
}
.hdn-page .hdn-hero p {
  max-width: 720px;
  margin: 0 auto 30px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 17px;
}
.hdn-page .hdn-hero .hdn-cta {
  display: inline-flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}
.hdn-page .hdn-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: uppercase;
  padding: 13px 24px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 12px;
  cursor: pointer;
  transition: 0.2s;
  border: none;
}
.hdn-page .hdn-btn-primary {
  background: var(--hdn-accent);
  color: #fff;
}
.hdn-page .hdn-btn-primary:hover {
  background: #c9550f;
  transform: translateY(-2px);
}
.hdn-page .hdn-btn-ghost {
  background: #0e4eff;
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.3);
}
.hdn-page .hdn-btn-ghost:hover {
  background: rgba(255, 255, 255, 0.18);
}

/* ===== SECTIONS ===== */
.hdn-page .hdn-section {
  padding: 40px 24px;
}
.hdn-page .hdn-container {
  max-width: 1200px;
  margin: 0 auto;
}
.hdn-page .hdn-sec-head {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 35px;
}
.hdn-page .hdn-sec-head .hdn-kicker {
  color: var(--hdn-accent);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 13px;
  margin-bottom: 10px;
}
.hdn-page .hdn-sec-head h2 {
  font-size: clamp(26px, 3.5vw, 38px);
  font-weight: 800;
  color: var(--hdn-primary);
  margin-bottom: 14px;
}
.hdn-page .hdn-sec-head p {
  color: var(--hdn-muted);
  font-size: 16px;
}

/* ===== 1. ĐƠN VỊ CHỦ QUẢN ===== */
.hdn-page .hdn-owner {
  background: var(--hdn-surface);
  border: 1px solid var(--hdn-border);
  border-radius: var(--hdn-radius);
  box-shadow: var(--hdn-shadow);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
  align-items: center;
}
.hdn-page .hdn-owner .hdn-badge {
  aspect-ratio: 1;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--hdn-primary), var(--hdn-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 64px;
  font-weight: 800;
}
.hdn-page .hdn-owner .hdn-badge img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hdn-page .hdn-owner h3 {
  color: var(--hdn-primary);
  font-size: 24px;
  margin-bottom: 14px;
}
.hdn-page .hdn-owner ul {
  list-style: none;
  margin-top: 14px;
}
.hdn-page .hdn-owner ul li {
  padding: 8px 0 8px 26px;
  position: relative;
  border-bottom: 1px dashed var(--hdn-border);
}
.hdn-page .hdn-owner ul li:last-child {
  border-bottom: none;
}
.hdn-page .hdn-owner ul li::before {
  content: "▸";
  position: absolute;
  left: 6px;
  color: var(--hdn-accent);
  font-weight: 700;
}
@media (max-width: 820px) {
  .hdn-page .hdn-owner {
    grid-template-columns: 1fr;
    padding: 32px;
  }
  .hdn-page .hdn-owner .hdn-badge {
    max-width: 200px;
    margin: 0 auto;
  }
}

/* ===== 2. CƠ CẤU TỔ CHỨC ===== */
.hdn-page .hdn-org-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 22px;
}
.hdn-page .hdn-org-card {
  background: var(--hdn-surface);
  border: 1px solid var(--hdn-border);
  border-radius: var(--hdn-radius);
  padding: 28px 24px;
  transition: 0.25s;
  position: relative;
  overflow: hidden;
}
.hdn-page .hdn-org-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--hdn-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: 0.3s;
}
.hdn-page .hdn-org-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--hdn-shadow);
}
.hdn-page .hdn-org-card:hover::before {
  transform: scaleX(1);
}
.hdn-page .hdn-org-card .hdn-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 16px;
  background: linear-gradient(135deg, rgba(15, 76, 92, 0.1), rgba(227, 100, 20, 0.1));
  padding: 6px;
}
.hdn-page .hdn-org-card h4 {
  color: var(--hdn-primary);
  font-size: 17px;
  margin-bottom: 8px;
}
.hdn-page .hdn-org-card p {
  color: var(--hdn-muted);
  font-size: 14px;
}
.hdn-page .hdn-org-top {
  text-align: center;
  margin-bottom: 28px;
  display: inline-block;
  padding: 10px 28px;
  border-radius: 999px;
  background: var(--hdn-primary);
  color: #fff;
  font-weight: 700;
}
.hdn-page .hdn-org-tree {
  text-align: center;
  margin-bottom: 34px;
}

/* ===== 3. ĐỐI TÁC ===== */
.hdn-page .hdn-partners {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}
.hdn-page .hdn-partner {
  flex: 1;
  min-width: 260px;
  max-width: 380px;
  background: var(--hdn-surface);
  border: 1px solid var(--hdn-border);
  border-radius: var(--hdn-radius);
  padding: 36px;
  text-align: center;
  transition: 0.25s;
}
.hdn-page .hdn-partner:hover {
  transform: translateY(-6px);
  box-shadow: var(--hdn-shadow);
  border-color: var(--hdn-accent);
}
.hdn-page .hdn-partner .hdn-logo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 18px;
  background: linear-gradient(135deg, var(--hdn-primary), var(--hdn-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 26px;
  font-weight: 800;
}
.hdn-page .hdn-partner h4 {
  color: var(--hdn-primary);
  font-size: 20px;
  margin-bottom: 8px;
}
.hdn-page .hdn-partner p {
  color: var(--hdn-muted);
  font-size: 14px;
  margin-bottom: 14px;
}
.hdn-page .hdn-partner .hdn-field {
  display: inline-block;
  padding: 5px 12px;
  background: var(--hdn-bg);
  border-radius: 999px;
  font-size: 12px;
  color: var(--hdn-primary);
  font-weight: 600;
}

/* ===== 4. ĐIỀU LỆ & QUY CHẾ ===== */
.hdn-page .hdn-charter {
  background: var(--hdn-surface);
  border: 1px solid var(--hdn-border);
  border-radius: var(--hdn-radius);
  box-shadow: var(--hdn-shadow);
  overflow: hidden;
}
.hdn-page .hdn-charter-head {
  background: linear-gradient(135deg, var(--hdn-primary), var(--hdn-primary-dark));
  color: #fff;
  padding: 30px 36px;
}
.hdn-page .hdn-charter-head h3 {
  font-size: 22px;
}
.hdn-page .hdn-charter-body {
  padding: 0;
}
.hdn-page .hdn-charter-item {
  padding: 20px 36px 10px 36px;
  border-bottom: 1px solid var(--hdn-border);
  display: flex;
  gap: 18px;
  align-items: flex-start;
  cursor: pointer;
  transition: 0.2s;
}
.hdn-page .hdn-charter-item:last-child {
  border-bottom: none;
}
.hdn-page .hdn-charter-item:hover {
  background: var(--hdn-bg);
}
.hdn-page .hdn-charter-item .hdn-num {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #e36414;
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hdn-page .hdn-charter-item h5 {
  color: var(--hdn-primary);
  font-size: 16px;
  margin-bottom: 4px;
}
.hdn-page .hdn-charter-item p {
  color: var(--hdn-muted);
  font-size: 14px;
}

/* ===== 5. LỘ TRÌNH ĐÀO TẠO ===== */
.hdn-page .hdn-roadmap {
  position: relative;
  padding-left: 0;
}
.hdn-page .hdn-timeline {
  position: relative;
  padding-left: 30px;
}
.hdn-page .hdn-timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 6px;
  width: 2px;
  background: linear-gradient(var(--hdn-accent), var(--hdn-primary));
}
.hdn-page .hdn-tl-item {
  position: relative;
  margin-bottom: 26px;
  background: var(--hdn-surface);
  border: 1px solid var(--hdn-border);
  border-radius: var(--hdn-radius);
  padding: 15px 26px;
  transition: 0.25s;
}
.hdn-page .hdn-tl-item:hover {
  transform: translateX(6px);
  box-shadow: var(--hdn-shadow);
  border-color: var(--hdn-accent);
}
.hdn-page .hdn-tl-item::before {
  content: "";
  position: absolute;
  left: -36px;
  top: 24px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 4px solid var(--hdn-accent);
  box-shadow: 0 0 0 4px rgba(227, 100, 20, 0.15);
}
.hdn-page .hdn-tl-item .hdn-tl-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 8px;
}
.hdn-page .hdn-tl-item h4 {
  color: var(--hdn-primary);
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.hdn-page .hdn-tl-item h4 img {
  width: 32px;
}
.hdn-page .hdn-tl-item .hdn-stage {
  font-size: 12px;
  font-weight: 700;
  color: var(--hdn-accent);
  background: rgba(227, 100, 20, 0.1);
  padding: 4px 12px;
  border-radius: 999px;
}
.hdn-page .hdn-tl-item p {
  color: var(--hdn-muted);
  font-size: 14px;
}
@media (max-width: 640px) {
  .hdn-page .hdn-timeline {
    padding-left: 24px;
  }
  .hdn-page .hdn-tl-item::before {
    left: -30px;
  }
}

/* ===== FOOTER ===== */
.hdn-page .hdn-footer {
  background: var(--hdn-primary-dark);
  color: rgba(255, 255, 255, 0.85);
  padding: 50px 24px 30px;
}
.hdn-page .hdn-footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 40px;
}
.hdn-page .hdn-footer-inner h5 {
  color: #fff;
  font-size: 16px;
  margin-bottom: 14px;
}
.hdn-page .hdn-footer-inner p,
.hdn-page .hdn-footer-inner a {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  display: block;
  margin-bottom: 8px;
}
.hdn-page .hdn-footer-inner a:hover {
  color: #fff;
}
.hdn-page .hdn-footer-bottom {
  max-width: 1200px;
  margin: 30px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  text-align: center;
  font-size: 13px;
  color: rgba(255, 255, 255, 0.6);
}
@media (max-width: 760px) {
  .hdn-page .hdn-footer-inner {
    grid-template-columns: 1fr;
  }
}