/* 工具门户 — 轻量样式（依赖 style.css） */
.portal-hero {
  padding: 48px 0 28px;
  text-align: center;
}
.portal-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}
.portal-hero p {
  margin: 0 auto;
  max-width: 36rem;
  color: var(--muted, #64748b);
  line-height: 1.6;
}
.portal-tools {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  padding: 12px 0 48px;
}
.portal-card {
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(148, 163, 184, 0.35);
  border-radius: 14px;
  background: #fff;
  overflow: hidden;
  text-decoration: none;
  color: inherit;
  transition: box-shadow .2s ease, transform .2s ease;
}
.portal-card:hover {
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.08);
  transform: translateY(-2px);
}
.portal-card__cover {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #0f172a, #334155);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 1.25rem;
}
.portal-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.portal-card__body {
  padding: 16px 18px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex: 1;
}
.portal-card__body h2 {
  margin: 0;
  font-size: 1.15rem;
}
.portal-card__tagline {
  margin: 0;
  color: #64748b;
  font-size: 0.92rem;
  line-height: 1.45;
}
.portal-card__meta {
  margin-top: auto;
  padding-top: 10px;
  font-size: 0.85rem;
  color: #94a3b8;
}
.tool-detail-head {
  display: grid;
  gap: 24px;
  grid-template-columns: 1fr;
  padding: 28px 0 8px;
}
@media (min-width: 860px) {
  .tool-detail-head {
    grid-template-columns: 1.2fr 1fr;
    align-items: start;
  }
}
.tool-detail-cover {
  border-radius: 14px;
  overflow: hidden;
  background: linear-gradient(135deg, #0f172a, #334155);
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.5rem;
  font-weight: 700;
}
.tool-detail-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.tool-detail-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}
.tool-versions {
  margin: 28px 0 48px;
}
.tool-versions table {
  width: 100%;
  border-collapse: collapse;
}
.tool-versions th,
.tool-versions td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid #e2e8f0;
  font-size: 0.92rem;
}
.admin-tool-form .form-row {
  margin-bottom: 12px;
}
.admin-tool-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 4px;
}
.admin-tool-form input[type="text"],
.admin-tool-form input[type="number"],
.admin-tool-form textarea,
.admin-tool-form select {
  width: 100%;
  max-width: 520px;
  padding: 8px 10px;
  box-sizing: border-box;
}