:root {
  --bg: #f5f7ff;
  --bg-soft: #eef3ff;
  --ink: #1f2a45;
  --muted: #5f6b85;
  --line: #d7def2;
  --card: #ffffff;
  --primary: #2056e8;
  --primary-2: #20a4f3;
  --danger: #cc2f5a;
  --shadow: 0 14px 40px rgba(31, 42, 69, 0.12);
  --radius-lg: 22px;
  --radius-md: 14px;
  --radius-sm: 10px;
}

* {
  box-sizing: border-box;
}

body.kb-body {
  margin: 0;
  min-height: 100vh;
  font-family: "Manrope", "Noto Sans SC", "Segoe UI", sans-serif;
  background: radial-gradient(circle at 10% -10%, #d7e6ff 0%, transparent 40%),
    radial-gradient(circle at 100% 0%, #d5f0ff 0%, transparent 36%),
    var(--bg);
  color: var(--ink);
}

.kb-bg-shape {
  position: fixed;
  border-radius: 999px;
  filter: blur(80px);
  opacity: 0.35;
  pointer-events: none;
  z-index: -1;
}

.kb-bg-shape--one {
  width: 360px;
  height: 360px;
  background: #7ab4ff;
  top: -120px;
  right: -80px;
}

.kb-bg-shape--two {
  width: 300px;
  height: 300px;
  background: #8ce4da;
  bottom: -100px;
  left: -120px;
}

.kb-header {
  width: min(1200px, calc(100% - 28px));
  margin: 16px auto 0;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.kb-brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  text-decoration: none;
}

.kb-brand__dot {
  width: 13px;
  height: 44px;
  border-radius: 20px;
  background: linear-gradient(180deg, var(--primary), var(--primary-2));
}

.kb-brand h1 {
  margin: 0;
  font-size: clamp(1rem, 2.8vw, 1.35rem);
}

.kb-brand p {
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.kb-header__actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.kb-btn {
  border: none;
  border-radius: 999px;
  padding: 10px 16px;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.kb-btn:hover {
  transform: translateY(-1px);
}

.kb-btn--primary {
  color: #fff;
  background: linear-gradient(110deg, var(--primary), var(--primary-2));
  box-shadow: 0 10px 20px rgba(32, 86, 232, 0.28);
}

.kb-btn--ghost {
  color: var(--ink);
  background: var(--bg-soft);
  border: 1px solid var(--line);
}

.kb-btn--danger {
  color: #fff;
  background: linear-gradient(110deg, #b72f4f, var(--danger));
}

.kb-main {
  width: min(1200px, calc(100% - 28px));
  margin: 18px auto 24px;
}

.kb-main--admin {
  margin-bottom: 40px;
}

.kb-panel {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  padding: 18px;
}

.kb-search-panel {
  animation: kb-rise 0.35s ease;
}

.kb-list-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin: 12px 0;
}

.kb-list-head h2 {
  margin: 0;
  font-size: 1.25rem;
}

.kb-search-row {
  display: flex;
  gap: 10px;
}

.kb-search-row input,
.kb-form input,
.kb-form textarea {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  padding: 11px 12px;
  font-size: 0.95rem;
}

.kb-search-row input:focus,
.kb-form input:focus,
.kb-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(32, 86, 232, 0.15);
}

.kb-chip-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.kb-chip {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  padding: 5px 11px;
  font-size: 0.85rem;
}

.kb-chip--button {
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.kb-chip--button.is-active {
  color: #fff;
  border-color: transparent;
  background: linear-gradient(110deg, var(--primary), var(--primary-2));
}

.kb-card-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.kb-card {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: #fff;
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.kb-card h3 {
  margin: 0;
  font-size: 1rem;
}

.kb-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.kb-card footer {
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
}

.kb-link-btn {
  color: var(--primary);
  font-weight: 700;
  text-decoration: none;
}

.kb-muted {
  color: var(--muted);
  font-size: 0.85rem;
}

.kb-empty {
  margin-top: 14px;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px dashed var(--line);
  color: var(--muted);
  text-align: center;
}

.kb-pagination {
  margin-top: 14px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.kb-page-btn {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--muted);
  min-width: 36px;
  height: 34px;
  padding: 0 12px;
  font-weight: 700;
  cursor: pointer;
}

.kb-page-btn.is-active {
  border: none;
  color: #fff;
  background: linear-gradient(110deg, var(--primary), var(--primary-2));
}

.kb-detail-panel {
  animation: kb-rise 0.35s ease;
}

.kb-detail-head {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.kb-detail-meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.kb-detail-title {
  margin: 16px 0 8px;
  font-size: clamp(1.25rem, 3vw, 1.8rem);
}

.kb-detail-summary {
  margin: 0 0 12px;
  color: var(--muted);
}

.kb-markdown {
  border-top: 1px solid var(--line);
  padding-top: 14px;
  line-height: 1.7;
  word-break: break-word;
}

.kb-markdown img {
  max-width: 100%;
  border-radius: 12px;
  border: 1px solid var(--line);
}

.kb-markdown pre {
  overflow-x: auto;
  background: #161c2d;
  color: #e8ecff;
  padding: 12px;
  border-radius: 10px;
}

.kb-attachments {
  margin-top: 16px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
}

.kb-attachments h3 {
  margin: 0 0 10px;
}

.kb-attachment-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kb-attachment-item {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink);
  padding: 7px 12px;
  max-width: 100%;
}

.kb-admin-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: 1.15fr 1fr;
}

.kb-login-panel {
  max-width: 440px;
  margin: 36px auto 0;
}

.kb-login-panel h2 {
  margin: 0 0 8px;
}

.kb-form {
  display: grid;
  gap: 10px;
}

.kb-form label {
  display: grid;
  gap: 6px;
  font-size: 0.9rem;
  font-weight: 700;
}

.kb-form textarea {
  resize: vertical;
  min-height: 100px;
  font-family: "Noto Sans SC", sans-serif;
}

.kb-form-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.kb-upload-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.kb-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.kb-tag {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 6px 10px;
  font-size: 0.8rem;
  background: #fff;
}

.kb-tag button {
  border: none;
  background: transparent;
  color: var(--danger);
  cursor: pointer;
  font-weight: 700;
}

.kb-table-wrap {
  overflow-x: auto;
}

.kb-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 10px;
}

.kb-table th,
.kb-table td {
  border-bottom: 1px solid var(--line);
  text-align: left;
  padding: 9px 7px;
  font-size: 0.88rem;
}

.kb-table th {
  color: var(--muted);
}

.kb-table-actions {
  display: flex;
  gap: 6px;
}

.kb-mini-btn {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  font-size: 0.78rem;
  padding: 5px 9px;
  cursor: pointer;
}

.kb-mini-btn--danger {
  color: #b72f4f;
  border-color: #f0c4d1;
}

.kb-error {
  color: #b72f4f;
  font-size: 0.9rem;
  min-height: 1.2em;
}

.kb-success {
  color: #116d3a;
  font-size: 0.9rem;
  min-height: 1.2em;
}

@keyframes kb-rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 980px) {
  .kb-admin-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .kb-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .kb-header__actions {
    width: 100%;
    justify-content: flex-start;
  }

  .kb-search-row {
    flex-direction: column;
  }

  .kb-list-head {
    flex-direction: column;
    align-items: flex-start;
  }
}