.certificates-section {
  padding-top: 104px;
  padding-bottom: 104px;
  border-top: 1px solid var(--line);
}
.certificates-heading {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 390px);
  align-items: end;
  gap: 36px;
  margin-bottom: 30px;
}
.certificates-heading .section-intro {
  max-width: 390px;
}
.certificate-grid,
.certificate-upcoming {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.certificate-grid[hidden],
.certificate-upcoming[hidden] { display: none; }
.certificate-card[hidden],
.certificate-more[hidden] { display: none; }
.certificate-source,
.certificate-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 236px;
  padding: 30px 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: linear-gradient(145deg, var(--surface), var(--surface-alt));
  box-shadow: 0 18px 40px -38px #071b6380;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.certificate-source::before,
.certificate-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--accent);
}
.certificate-source-top,
.certificate-card-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: .17em;
  text-transform: uppercase;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}
.certificate-emblem,
.certificate-mark {
  display: grid;
  flex: none;
  place-items: center;
  width: 34px;
  height: 34px;
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--accent);
  background: var(--surface-alt);
}
.certificate-emblem svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}
.certificate-source h3,
.certificate-card h3 {
  max-width: 28ch;
  margin-top: 24px;
  font-size: clamp(22px, 2.2vw, 27px);
  line-height: 1.2;
  letter-spacing: -.04em;
}
.certificate-source p,
.certificate-card p {
  max-width: 52ch;
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}
.certificate-source-status {
  margin-top: auto;
  padding-top: 22px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.certificate-source-status::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 1px;
  margin: 0 10px 4px 0;
  background: currentColor;
}
.certificate-card .certificate-issuer {
  margin-top: 21px;
  color: var(--accent);
  font-size: 11px;
  font-weight: 750;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.certificate-card h3 { margin-top: 8px; }
.certificate-card .certificate-issued { margin-top: 14px; }
.certificate-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: auto;
  padding-top: 30px;
}
.certificate-action {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  min-height: 42px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 11px;
  color: var(--navy);
  background: var(--surface-alt);
  font-size: 12px;
  font-weight: 700;
  line-height: 1.35;
  transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.certificate-action-preview {
  border-color: transparent;
  color: #fff;
  background: #1d347c;
}
.certificate-action:hover {
  transform: translateY(-2px);
  border-color: var(--accent);
}
.certificate-action-preview:hover { background: #3152a5; }
.certificate-more {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  margin: 28px auto 0;
  padding: 10px 24px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--navy);
  background: var(--surface);
  font-size: 13px;
  font-weight: 700;
  box-shadow: 0 12px 30px -24px #071b6380;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}
.certificate-more::after {
  content: '↓';
  margin-left: 16px;
  padding-left: 14px;
  border-left: 1px solid var(--line);
  color: var(--accent);
}
.certificate-more[aria-expanded="true"]::after { content: '↑'; }
.certificate-more:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 16px 30px -22px #071b6380;
}
.certificate-more:focus-visible,
.certificate-action:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.certificate-dialog {
  width: min(960px, calc(100vw - 30px));
  max-width: none;
  max-height: min(94vh, 1000px);
  margin: auto;
  padding: 0;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 22px;
  color: var(--text);
  background: var(--surface);
  box-shadow: 0 35px 100px #0209177a;
}
.certificate-dialog::backdrop {
  background: #071027c7;
  backdrop-filter: blur(7px);
}
.certificate-dialog-inner { padding: 20px; }
.certificate-dialog-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
  margin-bottom: 16px;
}
.certificate-dialog-head strong {
  font-size: 18px;
  line-height: 1.3;
}
.certificate-dialog-close {
  display: grid;
  flex: none;
  place-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--navy);
  background: var(--surface-alt);
  font-size: 26px;
  line-height: 1;
}
.certificate-dialog-viewer {
  display: grid;
  place-items: center;
  min-height: 240px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-alt);
}
.certificate-dialog-viewer img {
  width: auto;
  max-width: 100%;
  max-height: 76vh;
  object-fit: contain;
}
.certificate-dialog-viewer iframe {
  width: 100%;
  height: min(72vh, 750px);
  border: 0;
}
.certificate-dialog-full {
  display: inline-block;
  margin-top: 14px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
}
@media (hover: hover) and (pointer: fine) {
  .certificate-source:hover,
  .certificate-card:hover {
    transform: translateY(-3px);
    border-color: color-mix(in srgb, var(--accent), var(--line) 52%);
    box-shadow: 0 28px 60px -38px #071b6380;
  }
}
@media (max-width: 700px) {
  .certificates-section { padding-top: 78px; padding-bottom: 78px; }
  .certificates-heading,
  .certificate-grid,
  .certificate-upcoming { grid-template-columns: 1fr; }
  .certificates-heading { gap: 18px; }
  .certificate-source,
  .certificate-card { min-height: 210px; padding: 24px; }
  .certificate-dialog-inner { padding: 14px; }
}
@media (prefers-reduced-motion: reduce) {
  .certificate-source,
  .certificate-card,
  .certificate-action,
  .certificate-more,
  .certificate-more::after { transition: none; }
  .certificate-source:hover,
  .certificate-card:hover,
  .certificate-action:hover,
  .certificate-more:hover { transform: none; }
}