:root {
  --bg: #e6edf2;
  --bg-elev: #f7fafc;
  --ink: #142033;
  --muted: #5a6b7d;
  --line: #c5d0db;
  --accent: #0f766e;
  --accent-soft: #ccfbf1;
  --warn: #b45309;
  --radius: 12px;
  --font: "Noto Sans SC", "DM Sans", system-ui, sans-serif;
  --shadow: 0 12px 40px rgba(20, 32, 51, 0.08);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font);
  color: var(--ink);
  background:
    radial-gradient(1200px 600px at 10% -10%, #d8f3ef 0%, transparent 55%),
    radial-gradient(900px 500px at 100% 0%, #dbe7f5 0%, transparent 50%),
    var(--bg);
}

body {
  line-height: 1.55;
}

.app {
  max-width: 960px;
  margin: 0 auto;
  padding: 28px 20px 48px;
}

.top {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 24px;
}

.brand-mark {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
}

.brand h1 {
  margin: 0;
  font-size: clamp(1.6rem, 3vw, 2rem);
  letter-spacing: -0.02em;
}

.sub {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.views {
  display: flex;
  gap: 8px;
  padding: 4px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.view-btn {
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 8px 16px;
  border-radius: 999px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.view-btn.is-active {
  background: var(--ink);
  color: #fff;
}

.tag-bar {
  margin-bottom: 18px;
  padding: 14px 16px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.tag-bar-label {
  margin: 0 0 10px;
  font-size: 0.85rem;
  color: var(--muted);
}

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

.tag-chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}

.tag-chip.is-on {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.list-meta {
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}

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

.catalog {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.catalog th,
.catalog td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.catalog th {
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
  background: #eef3f7;
}

.catalog tbody tr {
  cursor: pointer;
  transition: background 0.15s ease;
}

.catalog tbody tr:hover {
  background: #eef8f6;
}

.title-link {
  color: var(--ink);
  font-weight: 600;
  text-decoration: none;
}

.title-link:hover {
  color: var(--accent);
}

.pill {
  display: inline-block;
  margin: 0 4px 4px 0;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e8eef4;
  color: var(--muted);
  font-size: 0.78rem;
}

.pill.is-placeholder {
  background: #ffedd5;
  color: var(--warn);
}

.empty {
  padding: 28px 16px;
  text-align: center;
  color: var(--muted);
}

.detail {
  padding: 16px 18px 28px;
}

.back {
  border: 0;
  background: transparent;
  color: var(--accent);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  padding: 0 0 12px;
}

.article h1 {
  margin: 0 0 8px;
  font-size: 1.55rem;
}

.article .meta-row {
  color: var(--muted);
  font-size: 0.9rem;
  margin-bottom: 18px;
}

.article .meta-row a {
  color: var(--accent);
}

.article .body {
  font-size: 1.02rem;
}

.article .body h1,
.article .body h2,
.article .body h3 {
  margin-top: 1.4em;
}

.article .body code {
  font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 0.9em;
  background: #e8eef4;
  color: #0f3d3a;
  padding: 0.12em 0.4em;
  border-radius: 5px;
  border: 1px solid #d5dde6;
}

/* 代码块：浅底深字，跟整页浅色风格一致，避免「深底 + 浅 code 底」导致看不见 */
.article .body pre {
  overflow-x: auto;
  margin: 1em 0;
  padding: 14px 16px;
  background: #f3f7fa;
  color: #142033;
  border: 1px solid var(--line);
  border-radius: 10px;
  line-height: 1.65;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.article .body pre code {
  display: block;
  background: transparent;
  color: inherit;
  border: 0;
  padding: 0;
  font-size: 0.88rem;
  white-space: pre;
  tab-size: 2;
}
.article .body blockquote {
  margin: 1em 0;
  padding: 0.2em 0 0.2em 1em;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.foot {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  justify-content: space-between;
  align-items: flex-end;
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.85rem;
}

.foot-left {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.foot-tokens {
  line-height: 1.45;
}

.foot code {
  font-size: 0.85em;
}

.usage-block {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line, #ddd);
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.pill-free {
  background: #e8f5e9;
  color: #2e7d32;
}

.pill-paid {
  background: #fff3e0;
  color: #ef6c00;
}

@media (max-width: 640px) {
  .catalog th:nth-child(3),
  .catalog td:nth-child(3) {
    display: none;
  }
}