.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 20rem), 1fr));
  gap: var(--space-5);
  align-items: stretch;
}

.cert-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-5);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: rgb(var(--surface-rgb) / max(0.7, var(--glass-min)));
  min-width: 0;
  transition: border-color .2s ease, transform .2s ease, box-shadow .2s ease;
}

.cert-card:hover {
  border-color: rgb(var(--accent-rgb) / 0.45);
  transform: translateY(-2px);
  box-shadow: 0 14px 36px rgb(var(--ink-rgb) / 0.08);
}

.cert-card--featured {
  grid-column: span 1;
  padding: var(--space-6);
  border-color: rgb(var(--accent-rgb) / 0.35);
  background:
    radial-gradient(ellipse at 100% 0%, rgb(var(--accent-rgb) / 0.12), transparent 55%),
    rgb(var(--surface-rgb) / max(0.85, var(--glass-min)));
}

@media (min-width: 900px) {
  .cert-grid { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .cert-card { grid-column: span 2; }
  .cert-card--featured { grid-column: span 3; }
}

.cert-card__head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.cert-mark { width: 44px; height: 44px; flex: none; }
.cert-mark__bg { fill: rgb(var(--accent-rgb) / 0.1); stroke: rgb(var(--accent-rgb) / 0.45); stroke-width: 1.5; }
.cert-mark__tick { stroke: rgb(var(--accent-rgb) / 0.6); stroke-width: 1.5; fill: none; }
.cert-mark__txt { fill: var(--color-primary); font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; }
.cert-card--featured .cert-mark__bg { fill: var(--color-primary); stroke: var(--color-primary); }
.cert-card--featured .cert-mark__txt { fill: #fff; }
.cert-card--featured .cert-mark__tick { stroke: rgb(255 255 255 / 0.5); }

.cert-card__who { display: grid; gap: 2px; min-width: 0; }

.cert-card__issuer {
  margin: 0;
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-text);
  overflow-wrap: anywhere;
}

.cert-card__type {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.cert-card__flag {
  margin-left: auto;
  padding: 4px 10px;
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgb(var(--accent-rgb) / 0.1);
  border: 1px solid rgb(var(--accent-rgb) / 0.3);
}

.cert-card__title {
  margin: var(--space-1) 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  letter-spacing: -0.01em;
  overflow-wrap: anywhere;
}

.cert-card--featured .cert-card__title { font-size: clamp(1.2rem, 2vw, 1.55rem); }

.cert-card__text {
  margin: 0;
  color: var(--color-text-muted);
  line-height: var(--lh-relaxed);
  font-size: var(--fs-sm);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.cert-card--featured .cert-card__text { -webkit-line-clamp: 4; }

.cert-card__note {
  margin: 0;
  padding: var(--space-3) var(--space-4);
  border-left: 2px solid var(--color-primary);
  background: rgb(var(--accent-rgb) / 0.06);
  color: var(--color-text-muted);
  font-size: var(--fs-sm);
}

.cert-card__tags { display: flex; flex-wrap: wrap; gap: var(--space-2); }

.cert-card__foot {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2) var(--space-4);
}

.cert-card__status {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
}

.cert-card__link {
  font-weight: 600;
  font-size: var(--fs-sm);
  color: var(--color-primary);
  text-decoration: none;
  white-space: nowrap;
}

.cert-card__link:hover { text-decoration: underline; text-underline-offset: 3px; }

@media (max-width: 720px) {
  .cert-card, .cert-card--featured { padding: var(--space-4); }
}