.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border, #d1d5db);
}

.site-header-inner {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 14px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
  color: var(--text, #1f2937);
  text-decoration: none;
}

.brand-title {
  color: var(--text, #1f2937);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0;
}

.brand-note,
.breadcrumb,
.side-note,
footer {
  color: var(--muted, #6b7280);
}

.brand-note,
.tool-status,
.side-note,
footer {
  font-size: 12px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.site-nav a {
  border: 1px solid var(--border, #d1d5db);
  border-radius: 8px;
  background: #ffffff;
  color: var(--text, #1f2937);
  padding: 6px 10px;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
}

.site-nav a[aria-current="page"] {
  border-color: #93c5fd;
  background: #eff6ff;
  color: #1d4ed8;
}

.site-main {
  width: min(1400px, calc(100% - 32px));
  margin: 28px auto 48px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 18px;
  align-items: start;
}

.content {
  min-width: 0;
}

.content > main {
  width: 100%;
  margin: 0 0 18px;
}

.breadcrumb {
  margin: 0 0 10px;
  font-size: 13px;
}

.side-panel {
  position: sticky;
  top: 16px;
  padding: 18px;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 8px;
  background: var(--panel, #ffffff);
  box-shadow: var(--shadow, 0 6px 18px rgba(15, 23, 42, 0.08));
}

.tool-list {
  display: grid;
  gap: 12px;
}

.tool-category {
  padding-top: 12px;
  border-top: 1px solid var(--border, #d1d5db);
}

.tool-category:first-child {
  padding-top: 0;
  border-top: 0;
}

.tool-category h3 {
  margin: 0 0 8px;
  font-size: 15px;
  letter-spacing: 0;
}

.tool-list ul {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tool-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: #f9fafb;
  color: var(--text, #1f2937);
  text-decoration: none;
}

.tool-list a:hover {
  border-color: var(--border, #d1d5db);
}

.tool-list a[aria-current="page"] {
  border-color: #93c5fd;
  background: #eff6ff;
  color: #1d4ed8;
  font-weight: 800;
}

.tool-status {
  color: var(--muted, #6b7280);
  white-space: nowrap;
}

.side-note {
  margin: 14px 0 0;
}

.commercial-content {
  margin-bottom: 18px;
}

.commercial-content h2 {
  margin-top: 0;
}

.commercial-content details,
.legal-panel details {
  margin-top: 10px;
  border: 1px solid var(--border, #d1d5db);
  border-radius: 8px;
  background: #ffffff;
}

.commercial-content summary,
.legal-panel summary {
  cursor: pointer;
  padding: 10px 12px;
  font-weight: 700;
}

.commercial-content details p,
.legal-panel details p,
.legal-panel .license-wrap {
  margin: 0;
  padding: 0 12px 12px;
}

.commercial-content h3 {
  margin: 18px 0 6px;
  font-size: 16px;
}

.commercial-content p,
.legal-panel p {
  color: #374151;
}

.license-wrap {
  overflow-x: auto;
}

.license-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.license-table th,
.license-table td {
  padding: 8px;
  border-bottom: 1px solid var(--border, #d1d5db);
  text-align: left;
  vertical-align: top;
}

footer {
  margin-top: 20px;
}

footer p {
  margin: 0;
}

footer p + p {
  margin-top: 4px;
}

@media (max-width: 900px) {
  .site-header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-nav {
    justify-content: flex-start;
  }

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

  .side-panel {
    position: static;
  }
}

@media (max-width: 560px) {
  .site-header-inner,
  .site-main {
    width: min(100% - 20px, 1400px);
  }
}