/* ============================================
   国风企业级 API 市场网站
   配色：墨绿 + 朱红 + 金色 + 米白
   ============================================ */

:root {
  /* 国风配色 - 企业级 */
  --color-primary: #2D5A3D;       /* 墨绿 - 主色 */
  --color-primary-light: #4A7C59;
  --color-primary-dark: #1E3D28;
  --color-accent: #C44536;        /* 朱红 - 强调 */
  --color-accent-light: #E06B5E;
  --color-gold: #D4A574;          /* 金色 - 点缀 */
  --color-gold-light: #E8C9A0;
  --color-ink: #1A1A1A;           /* 墨黑 - 文字 */
  --color-ink-light: #5A5A5A;
  --color-ink-lighter: #8A8A8A;
  --color-paper: #FAF8F5;         /* 宣纸 - 页面背景 */
  --color-border: #E8E0D4;        /* 边框 */
  --color-secondary: #F5F0E8;     /* 米白 - 背景 */
  
  /* 字体 */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-serif: "Noto Serif SC", "Source Han Serif SC", "SimSun", serif;
  
  /* 间距 */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  
  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  
  /* 阴影 */
  --shadow-sm: 0 1px 3px rgba(45, 90, 61, 0.08);
  --shadow-md: 0 4px 12px rgba(45, 90, 61, 0.1);
  --shadow-lg: 0 8px 24px rgba(45, 90, 61, 0.12);
  
  /* 过渡 */
  --transition: 0.2s ease;
}

/* ============================================
   基础重置
   ============================================ */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-ink);
  background-color: var(--color-paper);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--color-accent);
}

/* ============================================
   布局容器
   ============================================ */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   头部导航
   ============================================ */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-paper);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
  padding: 0 var(--space-lg);
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-primary-dark);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1rem;
  font-weight: 600;
}

.nav {
  display: flex;
  gap: var(--space-xl);
}

.nav a {
  position: relative;
  padding: var(--space-sm) 0;
  color: var(--color-ink-light);
  font-size: 14px;
  transition: color var(--transition);
}

.nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.nav a:hover {
  color: var(--color-primary);
}

.header-actions {
  display: flex;
  gap: var(--space-md);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}

.btn-primary {
  background: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-ink);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-sm {
  padding: 0.375rem 1rem;
  font-size: 12px;
}

/* ============================================
   首页 Hero
   ============================================ */

.hero {
  padding: var(--space-3xl) 0;
  background: linear-gradient(180deg, var(--color-paper) 0%, var(--color-secondary) 100%);
  text-align: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold), var(--color-primary));
}

.hero-inner {
  position: relative;
}

.hero h1 {
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.05em;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--color-ink-light);
  margin-bottom: var(--space-xl);
}

.hero-search {
  max-width: 520px;
  margin: 0 auto;
  display: flex;
  gap: var(--space-sm);
}

.hero-search .input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: white;
  font-size: 14px;
  transition: border-color var(--transition);
}

.hero-search .input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ============================================
   国风装饰元素
   ============================================ */

.divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin: var(--space-xl) 0;
}

.divider-line {
  width: 60px;
  height: 1px;
  background: var(--color-border);
}

.divider-dot {
  width: 6px;
  height: 6px;
  background: var(--color-gold);
  border-radius: 50%;
}

/* 印章效果 */
.seal {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-accent);
  color: white;
  font-family: var(--font-serif);
  font-size: 0.75rem;
  border-radius: 4px;
  transform: rotate(-5deg);
}

/* 国风边框 */
.chinese-border {
  border: 1px solid var(--color-border);
  position: relative;
}

.chinese-border::before {
  content: '';
  position: absolute;
  top: 4px;
  left: 4px;
  right: 4px;
  bottom: 4px;
  border: 1px solid var(--color-border);
  pointer-events: none;
}

/* ============================================
   分类区域
   ============================================ */

.section {
  padding: var(--space-2xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.section-title::before,
.section-title::after {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-gold);
}

.section-desc {
  font-size: 13px;
  color: var(--color-ink-lighter);
}

.categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.category-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-lg) var(--space-md);
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition);
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.category-icon {
  width: 44px;
  height: 44px;
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-secondary);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  transition: all var(--transition);
}

.category-card:hover .category-icon {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-gold-light) 100%);
  transform: scale(1.05);
}

.category-icon svg {
  width: 22px;
  height: 22px;
}

.category-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}

.category-count {
  font-size: 12px;
  color: var(--color-ink-lighter);
}

/* ============================================
   API 卡片
   ============================================ */

.api-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: var(--space-lg);
}

.api-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition);
}

.api-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.api-card-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.api-card-icon {
  width: 40px;
  height: 40px;
  background: var(--color-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  flex-shrink: 0;
  transition: all var(--transition);
}

.api-card:hover .api-card-icon {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-gold-light) 100%);
}

.api-card-icon svg {
  width: 20px;
  height: 20px;
}

.api-card-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-ink);
}

.api-card-desc {
  font-size: 13px;
  color: var(--color-ink-light);
  line-height: 1.5;
  margin-bottom: var(--space-md);
}

.api-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.api-card-price {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-accent);
}

.api-card-price-unit {
  font-size: 12px;
  color: var(--color-ink-lighter);
  font-weight: 400;
}

.api-card-tags {
  display: flex;
  gap: var(--space-xs);
}

.tag {
  padding: 0.125rem 0.5rem;
  background: var(--color-secondary);
  border-radius: var(--radius-sm);
  font-size: 11px;
  color: var(--color-ink-light);
}

.tag-free {
  background: #f6ffed;
  color: #52c41a;
}

.tag-hot {
  background: #fffbe6;
  color: #faad14;
}

/* ============================================
   列表页筛选
   ============================================ */

.filter-bar {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.filter-label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink);
}

.filter-btn {
  padding: 0.375rem 0.875rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  font-size: 12px;
  color: var(--color-ink-light);
  cursor: pointer;
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #f0f9ff;
}

.search-box {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-left: auto;
}

.search-box .input {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  width: 180px;
  transition: border-color var(--transition);
}

.search-box .input:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* ============================================
   API 详情页
   ============================================ */

.api-detail {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-xl);
}

.api-detail-main {
  min-width: 0;
}

.api-detail-sidebar {
  position: sticky;
  top: 76px;
  height: fit-content;
}

.api-detail-header {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.api-detail-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-sm);
}

.api-detail-desc {
  font-size: 13px;
  color: var(--color-ink-light);
  line-height: 1.6;
}

.api-detail-meta {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-md);
}

.api-detail-meta-item {
  font-size: 13px;
  color: var(--color-ink-light);
}

.api-detail-meta-item strong {
  color: var(--color-ink);
  font-weight: 500;
}

/* 详情页内容块 */

.content-block {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.content-block-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.content-block-title::before {
  content: '';
  width: 3px;
  height: 14px;
  background: var(--color-primary);
  border-radius: 1px;
}

/* 参数表格 */

.param-table {
  width: 100%;
  border-collapse: collapse;
}

.param-table th,
.param-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
  font-size: 13px;
}

.param-table th {
  background: var(--color-secondary);
  font-weight: 500;
  color: var(--color-ink);
}

.param-table td {
  color: var(--color-ink-light);
}

.param-table .required {
  color: var(--color-accent);
}

/* 代码块 */

.code-block {
  background: #1e1e1e;
  color: #d4d4d4;
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 12px;
  line-height: 1.5;
  overflow-x: auto;
  margin: var(--space-md) 0;
  border-left: 3px solid var(--color-primary);
}

.code-block .keyword { color: #569cd6; }
.code-block .string { color: #ce9178; }
.code-block .comment { color: #6a9955; }

/* 响应示例 */

.response-example {
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  margin-top: var(--space-md);
}

.response-example pre {
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 12px;
  color: var(--color-ink);
  white-space: pre-wrap;
  line-height: 1.5;
}

/* 侧边栏购买卡片 */

.purchase-card {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
}

.purchase-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-gold), var(--color-accent));
}

.purchase-price {
  text-align: center;
  margin-bottom: var(--space-lg);
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-gold-light) 100%);
  border-radius: var(--radius-sm);
}

.purchase-price-main {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-accent);
}

.purchase-price-unit {
  font-size: 12px;
  color: var(--color-ink-lighter);
}

.purchase-price-note {
  font-size: 12px;
  color: var(--color-ink-lighter);
  margin-top: var(--space-xs);
}

.purchase-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.purchase-actions .btn {
  width: 100%;
}

/* 调用测试表单 */

.test-form {
  margin-top: var(--space-lg);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}

.form-label .required {
  color: var(--color-accent);
}

.form-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 13px;
  transition: border-color var(--transition);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-hint {
  font-size: 12px;
  color: var(--color-ink-lighter);
  margin-top: var(--space-xs);
}

.test-result {
  margin-top: var(--space-lg);
  padding: var(--space-md);
  background: var(--color-secondary);
  border-radius: var(--radius-sm);
  display: none;
  border-left: 3px solid var(--color-primary);
}

.test-result.show {
  display: block;
}

.test-result-title {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}

.test-result-content {
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 12px;
  color: var(--color-ink-light);
  white-space: pre-wrap;
}

/* ============================================
   开发者中心
   ============================================ */

.dev-dashboard {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-xl);
}

.dev-sidebar {
  position: sticky;
  top: 76px;
  height: fit-content;
}

.dev-nav {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
}

.dev-nav-item {
  display: block;
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: none;
  background: transparent;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: var(--color-ink-light);
  text-align: left;
  cursor: pointer;
  transition: all var(--transition);
}

.dev-nav-item:hover {
  background: var(--color-secondary);
  color: var(--color-ink);
}

.dev-nav-item.active {
  background: #f0f9ff;
  color: var(--color-primary);
}

.dev-content {
  min-width: 0;
}

.dev-section {
  background: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.dev-section-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

/* 密钥卡片 */

.key-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  background: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-sm);
}

.key-info {
  flex: 1;
  min-width: 0;
}

.key-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
}

.key-value {
  font-family: "SF Mono", "Consolas", monospace;
  font-size: 12px;
  color: var(--color-ink-light);
  word-break: break-all;
}

.key-actions {
  display: flex;
  gap: var(--space-sm);
  flex-shrink: 0;
}

/* 余额卡片 */

.balance-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: var(--radius-md);
  color: white;
  margin-bottom: var(--space-lg);
}

.balance-amount {
  font-size: 1.75rem;
  font-weight: 600;
}

.balance-label {
  font-size: 13px;
  opacity: 0.9;
}

/* 充值表单 */

.topup-form {
  margin-top: var(--space-lg);
}

.topup-amounts {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-md);
}

.topup-amount {
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: white;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition);
}

.topup-amount:hover,
.topup-amount.selected {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #f0f9ff;
}

/* ============================================
   底部
   ============================================ */

.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-2xl) 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
}

.footer-col-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: white;
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: rgba(255, 255, 255, 0.5);
  font-size: 13px;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 12px;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
  text-decoration: none;
  transition: color var(--transition);
}
.footer-bottom a:hover {
  color: white;
}

/* ============================================
   响应式
   ============================================ */

@media (max-width: 768px) {
  .header-inner {
    padding: 0 var(--space-md);
  }
  
  .nav {
    display: none;
  }
  
  .hero {
    padding: var(--space-2xl) 0;
  }
  
  .hero h1 {
    font-size: 1.5rem;
  }
  
  .categories {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .api-grid {
    grid-template-columns: 1fr;
  }
  
  .api-detail {
    grid-template-columns: 1fr;
  }
  
  .api-detail-sidebar {
    position: static;
  }
  
  .dev-dashboard {
    grid-template-columns: 1fr;
  }
  
  .dev-sidebar {
    position: static;
  }
  
  .footer-inner {
    grid-template-columns: 1fr;
  }
  
  .filter-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .search-box {
    margin-left: 0;
    width: 100%;
  }
  
  .search-box .input {
    width: 100%;
  }
}

/* ============================================
   工具类
   ============================================ */

.text-center { text-align: center; }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.d-none { display: none !important; }

/* ============================================
   代码语言切换 / 代码块 / 表单提示
   ============================================ */
.code-tabs {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  flex-wrap: wrap;
}
.code-tabs .tab-btn {
  padding: 6px 14px;
  font-size: 13px;
  border: 1px solid var(--color-border);
  background: #fff;
  border-radius: var(--radius-sm, 6px);
  cursor: pointer;
  color: var(--color-ink-light);
  transition: all var(--transition);
}
.code-tabs .tab-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}
.code-block {
  background: #1e2430;
  color: #e6edf3;
  padding: var(--space-lg);
  border-radius: var(--radius-md, 8px);
  overflow-x: auto;
  font-size: 12.5px;
  line-height: 1.75;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.form-msg {
  display: none;
  padding: 10px 14px;
  border-radius: var(--radius-sm, 6px);
  font-size: 13px;
  margin-bottom: var(--space-md);
  border: 1px solid transparent;
}
.form-msg.show { display: block; }
.form-msg.error { background: #fef2f2; color: #b91c1c; border-color: #fecaca; }
.form-msg.success { background: #f0fdf4; color: #15803d; border-color: #bbf7d0; }


/* ============================================
   悬浮客服条
   ============================================ */
.side-service {
  position: fixed;
  right: 16px;
  bottom: 80px;
  z-index: 90;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.side-item {
  width: 52px;
  height: 52px;
  border-radius: 10px;
  background: #fff;
  border: 1px solid var(--color-border);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  text-decoration: none;
  color: var(--color-ink);
  font-size: 11px;
  transition: all var(--transition);
}
.side-item:hover {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  transform: translateY(-2px);
}
.side-ico { font-size: 17px; line-height: 1; }
.side-txt { margin-top: 3px; font-size: 10px; letter-spacing: .2px; }

@media (max-width: 768px) {
  .side-service { right: 8px; bottom: 60px; }
  .side-item { width: 44px; height: 44px; }
  .side-txt { display: none; }
}