/* 变量（浅色主题） */
:root {
  color-scheme: light;
  --sidebar-width: 260px;
  --header-height: 60px;
  --color-bg: #f8fafc;
  --color-sidebar: #ffffff;
  --color-border: #e2e8f0;
  --color-text: #0f172a;
  --color-text-muted: #64748b;
  --color-accent: #00a88a;
  --color-accent-hover: #008f74;
  --color-wechat: #07c160;
  --color-wechat-bg: #ecfdf3;
  --color-wechat-border: #86efac;
  --color-code-bg: #f1f5f9;
  --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

.layout {
  display: flex;
  min-height: 100vh;
}

.main-column {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.mobile-topbar,
.sidebar-backdrop,
.mobile-wechat-btn {
  display: none;
}

/* 侧边栏 */
.sidebar {
  width: var(--sidebar-width);
  background: var(--color-sidebar);
  border-right: 1px solid var(--color-border);
  flex-shrink: 0;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
}

.sidebar-header {
  padding: 24px 20px;
  border-bottom: 1px solid var(--color-border);
}

.logo {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
}

.logo-desc {
  margin: 4px 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.wechat-contact {
  margin-top: 16px;
  padding: 12px 14px;
  background: var(--color-wechat-bg);
  border: 1px solid var(--color-wechat-border);
  border-radius: 10px;
  border-left: 4px solid var(--color-wechat);
}

.wechat-contact--featured {
  margin-top: 24px;
  padding: 18px 20px;
}

.wechat-contact-label {
  margin: 0;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: #047857;
  text-transform: none;
}

.wechat-contact--featured .wechat-contact-label {
  font-size: 0.9rem;
}

.wechat-contact-hint {
  margin: 6px 0 0;
  font-size: 0.78rem;
  line-height: 1.45;
  color: var(--color-text-muted);
}

.wechat-contact--featured .wechat-contact-hint {
  font-size: 0.88rem;
}

.wechat-contact-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.wechat-contact-id {
  flex: 1;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--color-text);
}

.wechat-contact--featured .wechat-contact-id {
  font-size: 1.35rem;
}

.wechat-contact-copy {
  flex-shrink: 0;
  padding: 6px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-wechat);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: filter 0.15s ease;
}

.wechat-contact-copy:hover {
  filter: brightness(0.95);
}

.wechat-contact-copy.copied {
  background: #047857;
}

.sidebar-recommend {
  margin: 12px 0 0;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.sidebar-recommend a {
  color: var(--color-accent);
  text-decoration: none;
}

.sidebar-recommend a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.token-input-wrap {
  margin-top: 16px;
}

.token-input-row {
  display: flex;
  gap: 6px;
  align-items: stretch;
}

.token-input-row .token-input {
  flex: 1;
  min-width: 0;
}

.token-toggle-btn {
  flex-shrink: 0;
  padding: 0 10px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.token-toggle-btn:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
}

.token-label {
  display: block;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.token-input {
  width: 100%;
  padding: 10px 12px;
  font-size: 0.9rem;
  font-family: var(--font-mono);
  color: var(--color-text);
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  box-sizing: border-box;
}

.token-input::placeholder {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.token-input:focus {
  outline: none;
  border-color: var(--color-accent);
}

.nav {
  padding: 16px 0;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: block;
  padding: 12px 20px;
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  transition: all 0.15s ease;
  border-left: 3px solid transparent;
}

.nav-link:hover {
  color: var(--color-text);
  background: rgba(0, 168, 138, 0.08);
}

.nav-link.active {
  color: var(--color-accent);
  background: rgba(0, 168, 138, 0.12);
  border-left-color: var(--color-accent);
}

/* 分组（可展开收起） */
.nav-group {
  margin: 0;
}

.nav-group-toggle {
  display: flex;
  align-items: center;
  width: 100%;
  padding: 12px 20px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: left;
}

.nav-group-toggle:hover {
  color: var(--color-text);
  background: rgba(0, 168, 138, 0.08);
}

.nav-group-arrow {
  display: inline-block;
  width: 0;
  height: 0;
  margin-right: 10px;
  border-left: 5px solid currentColor;
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  transition: transform 0.2s ease;
}

.nav-group-toggle.expanded .nav-group-arrow {
  transform: rotate(90deg);
}

.nav-group-title {
  flex: 1;
}

.nav-sublist {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-sublink {
  padding-left: 47px; /* 20 + 10(arrow margin) + 17 indent */
}

/* 一级分组内的子组（标题 + 链接列表） */
.nav-subsection {
  margin: 0;
  list-style: none;
}

.nav-subsection-title {
  padding: 10px 20px 4px 47px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.nav-subsection-list {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
}

.nav-subsection-list .nav-sublink {
  padding-left: 52px;
}

/* 主内容区 */
.content {
  flex: 1;
  padding: 40px 48px 60px;
  max-width: 900px;
}

/* 文档页 */
.doc-section {
  margin-bottom: 2.5rem;
  scroll-margin-top: 24px;
}

.doc-heading {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.doc-heading::before {
  content: '';
  width: 4px;
  height: 1.2em;
  background: var(--color-accent);
  border-radius: 2px;
  flex-shrink: 0;
}

.doc-subheading {
  margin: 1.5rem 0 0.75rem;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

.doc-lead {
  margin: 0 0 1rem;
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

.doc-lead code {
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
  font-family: var(--font-mono);
}

.doc-footer {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  text-align: center;
}

.comment {
  color: #6b7280;
}

.keyword {
  color: #7c3aed;
}

.string {
  color: #0369a1;
}

.func {
  color: var(--color-accent);
}

/* 在线查询 */
.user-query-panel {
  margin-top: 1.25rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.user-query-desc {
  margin: 0 0 1rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.user-query-btn {
  width: 100%;
  max-width: 480px;
  padding: 10px 16px;
  font-size: 0.9rem;
  font-weight: 500;
  color: #fff;
  background: var(--color-accent);
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.user-query-btn:hover:not(:disabled) {
  background: var(--color-accent-hover);
}

.user-query-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}

.user-query-result {
  margin-top: 0.75rem;
  padding: 12px 14px;
  font-size: 0.85rem;
  line-height: 1.5;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background: #fff;
  max-width: 720px;
}

.user-query-result.is-loading {
  color: var(--color-text-muted);
}

.user-query-result.is-error {
  color: #b91c1c;
  border-color: #fecaca;
  background: #fef2f2;
}

.user-query-result.is-valid {
  border-color: #bbf7d0;
  background: #f0fdf4;
}

.user-query-result.is-warning {
  border-color: #fed7aa;
  background: #fff7ed;
}

.user-query-result.is-expired {
  border-color: #fecaca;
  background: #fef2f2;
}

.user-query-title {
  font-weight: 600;
  margin-bottom: 6px;
}

.user-query-row {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 4px;
}

.user-query-label {
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.user-query-value {
  font-family: var(--font-mono);
  text-align: right;
  word-break: break-all;
}

.user-query-remain {
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
  font-weight: 500;
}

.user-query-remain.is-expired { color: #b91c1c; }
.user-query-remain.is-warning { color: #c2410c; }
.user-query-remain.is-valid { color: #15803d; }

.return-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-top: 0.5rem;
}

.return-table th,
.return-table td {
  padding: 8px 12px;
  text-align: left;
  border: 1px solid var(--color-border);
}

.return-table th {
  background: var(--color-code-bg);
  font-weight: 600;
}

.return-table td:first-child {
  font-family: var(--font-mono);
}

.api-detail {
  min-height: 100%;
}

.welcome {
  padding-top: 20px;
}

.welcome h2 {
  margin: 0 0 16px;
  font-size: 1.75rem;
  font-weight: 600;
}

.welcome > p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 1rem;
}

.welcome-catalog {
  margin-top: 32px;
}

.welcome-catalog-heading {
  margin: 0 0 16px;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
}

.welcome-catalog-section {
  margin-bottom: 24px;
}

.welcome-catalog-section--quick {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.welcome-catalog-title {
  margin: 0 0 12px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--color-text-muted);
}

.welcome-catalog-subtitle {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.welcome-catalog-subtitle--break {
  grid-column: 1 / -1;
  margin-top: 4px;
}

.welcome-catalog-subtitle--break:first-child {
  margin-top: 0;
}

.welcome-catalog-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}

.welcome-catalog-link {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  color: var(--color-text);
  text-decoration: none;
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  text-align: center;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.welcome-catalog-link:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: rgba(0, 168, 138, 0.08);
}

.welcome-recommend {
  margin-top: 28px;
  padding: 16px 20px;
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.welcome-recommend-label {
  margin: 0 0 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
}

.welcome-recommend-desc {
  margin: 0;
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.welcome-recommend-desc a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.welcome-recommend-desc a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.hidden {
  display: none !important;
}

/* API 内容 */
.api-content h2 {
  margin: 0 0 8px;
  font-size: 1.5rem;
  font-weight: 600;
}

.api-desc {
  margin: 0 0 24px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.section {
  margin-bottom: 32px;
}

.section-title {
  margin: 0 0 12px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
}

/* 推介页 */
.promo-section-title {
  color: #15803d;
}

.promo-p {
  margin: 0 0 12px;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.promo-p a {
  color: var(--color-accent);
  text-decoration: none;
}

.promo-p a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.promo-list {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.promo-list li + li {
  margin-top: 8px;
}

.referral-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.referral-url {
  margin: 0;
  flex: 1;
  min-width: 200px;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--color-text);
  word-break: break-all;
}

.btn-copy {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--color-text);
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
}

.btn-copy:hover {
  background: rgba(0, 168, 138, 0.12);
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.btn-copy.copied {
  color: #15803d;
  border-color: #15803d;
}

/* 安装说明 */
.install-box {
  background: var(--color-code-bg);
  border-radius: 8px;
  padding: 16px 20px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: #0c4a6e;
}

.install-code-block pre {
  padding: 16px 80px 48px 20px;
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: #0c4a6e;
  white-space: pre-wrap;
  word-break: break-all;
}

.install-code-block .code-copy-btn {
  top: auto;
  bottom: 10px;
  right: 10px;
}

/* 代码块 */
.code-block {
  position: relative;
  background: var(--color-code-bg);
  border-radius: 8px;
  overflow: hidden;
  margin: 0;
}

.code-copy-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-family: inherit;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  z-index: 1;
}

.code-copy-btn:hover {
  color: var(--color-text);
  background: rgba(0, 168, 138, 0.2);
  border-color: var(--color-accent);
}

.code-copy-btn.copied {
  color: #34d399;
  border-color: #34d399;
}

.code-block pre {
  margin: 0;
  padding: 20px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--color-text);
}

/* 参数表 */
.params-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.params-table th,
.params-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

.params-table th {
  color: var(--color-text-muted);
  font-weight: 500;
}

.params-table td {
  color: var(--color-text);
}

.params-table tr:last-child td {
  border-bottom: none;
}

.params-table code {
  background: var(--color-code-bg);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.85em;
}

/* 文档图片 */
.api-image-wrap {
  margin: 0;
  padding: 0;
}

.api-image {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.api-image-caption {
  margin-top: 8px;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* 响应式 */
@media (max-width: 768px) {
  .sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 150;
    border: none;
    padding: 0;
    background: rgba(15, 23, 42, 0.45);
    cursor: pointer;
  }

  body.sidebar-open .sidebar-backdrop {
    display: block;
  }

  body.sidebar-open {
    overflow: hidden;
  }

  .mobile-topbar {
    display: flex;
    align-items: center;
    gap: 12px;
    position: sticky;
    top: 0;
    z-index: 120;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(8px);
  }

  .mobile-nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    background: #fff;
    color: var(--color-text);
    cursor: pointer;
    flex-shrink: 0;
  }

  .mobile-nav-toggle-icon,
  .mobile-nav-toggle-icon::before,
  .mobile-nav-toggle-icon::after {
    display: block;
    width: 16px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }

  .mobile-nav-toggle-icon {
    position: relative;
  }

  .mobile-nav-toggle-icon::before,
  .mobile-nav-toggle-icon::after {
    content: '';
    position: absolute;
    left: 0;
  }

  .mobile-nav-toggle-icon::before {
    top: -5px;
  }

  .mobile-nav-toggle-icon::after {
    top: 5px;
  }

  body.sidebar-open .mobile-nav-toggle-icon {
    background: transparent;
  }

  body.sidebar-open .mobile-nav-toggle-icon::before {
    top: 0;
    transform: rotate(45deg);
  }

  body.sidebar-open .mobile-nav-toggle-icon::after {
    top: 0;
    transform: rotate(-45deg);
  }

  .mobile-nav-toggle-label {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .mobile-topbar-text {
    min-width: 0;
    flex: 1;
  }

  .mobile-topbar-title {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .mobile-wechat-btn {
    display: inline-flex;
    flex-direction: column;
    align-items: flex-end;
    flex-shrink: 0;
    padding: 6px 10px;
    border: 1px solid var(--color-wechat-border);
    border-radius: 8px;
    background: var(--color-wechat-bg);
    cursor: pointer;
    line-height: 1.2;
  }

  .mobile-wechat-btn-label {
    font-size: 0.65rem;
    font-weight: 700;
    color: #047857;
    letter-spacing: 0.04em;
  }

  .mobile-wechat-btn-id {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-text);
  }

  .mobile-wechat-btn.copied {
    border-color: #047857;
    background: #d1fae5;
  }

  .layout {
    flex-direction: column;
  }

  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: min(320px, 88vw);
    height: 100vh;
    height: 100dvh;
    z-index: 200;
    transform: translateX(-105%);
    transition: transform 0.22s ease;
    border-right: 1px solid var(--color-border);
    border-bottom: none;
    box-shadow: 8px 0 24px rgba(15, 23, 42, 0.12);
  }

  body.sidebar-open .sidebar {
    transform: translateX(0);
  }

  .sidebar-header {
    position: sticky;
    top: 0;
    z-index: 1;
    background: var(--color-sidebar);
  }

  .nav-list {
    display: block;
    padding: 0 16px 16px;
  }

  .nav-group {
    margin-bottom: 4px;
  }

  .nav-group-toggle {
    padding: 8px 12px;
    border-radius: 6px;
  }

  .nav-sublink {
    padding: 8px 12px 8px 35px;
  }

  .nav-subsection-title {
    padding: 8px 12px 4px 35px;
    font-size: 0.7rem;
  }

  .nav-subsection-list .nav-sublink {
    padding-left: 40px;
  }

  .nav-link {
    padding: 8px 12px;
    border-radius: 6px;
    border-left: none;
  }

  .nav-link.active {
    border-left: none;
    border-radius: 6px;
  }

  .content {
    padding: 24px 20px 40px;
  }

  .doc-section {
    scroll-margin-top: 72px;
  }
}