/* ============================================
   OPC孵化平台 - 学员端全局样式表
   版本: 2.0.0
   色彩: 科技蓝 #1E6FFF / 强调橙 #FF6B35
   ============================================ */

/* --- CSS Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

::selection {
  background: rgba(30,111,255,0.18);
  color: var(--color-primary-dark);
}

:root {
  /* 色彩系统 */
  --color-primary: #1E6FFF;
  --color-primary-dark: #1557D4;
  --color-primary-light: #4D91FF;
  --color-primary-50: rgba(30,111,255,0.06);
  --color-primary-100: rgba(30,111,255,0.10);
  --color-primary-200: rgba(30,111,255,0.16);
  --color-accent: #FF6B35;
  --color-accent-dark: #E55A28;
  --color-accent-light: #FF9A6C;
  --color-success: #10B981;
  --color-success-light: rgba(16,185,129,0.10);
  --color-warning: #F59E0B;
  --color-warning-light: rgba(245,158,11,0.10);
  --color-danger: #EF4444;
  --color-danger-light: rgba(239,68,68,0.10);
  --color-bg: #F4F6F9;
  --color-bg-white: #FFFFFF;
  --color-bg-card: #FFFFFF;
  --color-text: #1A1F36;
  --color-text-secondary: #4E5D78;
  --color-text-muted: #8B95AE;
  --color-border: #E2E8F0;
  --color-border-light: #F0F2F6;

  /* 间距 */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;
  --spacing-2xl: 48px;

  /* 圆角 */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;
  --radius-2xl: 28px;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(26,31,54,0.05);
  --shadow-sm: 0 1px 4px rgba(26,31,54,0.06), 0 2px 8px rgba(26,31,54,0.04);
  --shadow-md: 0 4px 12px rgba(26,31,54,0.08), 0 2px 4px rgba(26,31,54,0.04);
  --shadow-lg: 0 10px 30px rgba(26,31,54,0.10), 0 4px 10px rgba(26,31,54,0.06);
  --shadow-xl: 0 20px 50px rgba(26,31,54,0.14);
  --shadow-primary: 0 4px 14px rgba(30,111,255,0.28);
  --shadow-accent: 0 4px 14px rgba(255,107,53,0.28);
  --shadow-card-hover: 0 8px 24px rgba(26,31,54,0.12), 0 2px 8px rgba(30,111,255,0.08);

  /* 布局 */
  --sidebar-width: 232px;
  --header-height: 62px;
  --container-max: 1240px;

  /* 过渡 */
  --transition-fast: 140ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 220ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 340ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 300ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

img { max-width: 100%; display: block; }

/* --- 容器系统 --- */
.app-wrapper {
  display: flex;
  min-height: 100vh;
}

.content-container {
  max-width: var(--container-max);
  margin: 0 auto;
  width: 100%;
}

/* 侧边栏 */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(175deg, #1E6FFF 0%, #1048CC 60%, #0D3DBB 100%);
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  z-index: 100;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  box-shadow: 2px 0 20px rgba(30,111,255,0.15);
  overflow: hidden;
}

/* 侧边栏顶部装饰线 */
.sidebar::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #FF6B35, #FF9A6C, transparent);
  z-index: 1;
}

/* 侧边栏底部装饰 */
.sidebar::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: radial-gradient(ellipse at bottom left, rgba(255,107,53,0.12) 0%, transparent 70%);
  pointer-events: none;
}

.sidebar-logo {
  padding: 22px 20px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  gap: 12px;
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.sidebar-logo .logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, rgba(255,255,255,0.25), rgba(255,255,255,0.10));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.5px;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255,255,255,0.2);
  flex-shrink: 0;
}

.sidebar-logo .logo-text {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.3px;
  overflow: hidden;
  max-width: 200px;
}

.sidebar-logo .logo-text span {
  display: block;
  font-size: 11px;
  color: rgba(255,255,255,.7);
  font-weight: 500;
  letter-spacing: 0.3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 180px;
  margin-top: 2px;
  opacity: 1;
  font-smoothing: antialiased;
  -webkit-font-smoothing: antialiased;
}

.sidebar-nav {
  flex: 1;
  padding: 12px 0 8px;
  overflow-y: auto;
  position: relative;
  z-index: 2;
}

.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 2px; }

.nav-section-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.38);
  padding: 14px 20px 5px;
  margin-top: 4px;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 20px;
  color: rgba(255,255,255,0.68);
  font-size: 14px;
  cursor: pointer;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
  text-decoration: none;
  border-radius: 0;
  margin: 1px 0;
  position: relative;
  overflow: hidden;
}

.nav-item::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
}

.nav-item:hover {
  color: rgba(255,255,255,0.95);
  border-left-color: rgba(255,255,255,0.4);
}

.nav-item:hover::before {
  background: rgba(255,255,255,0.08);
}

.nav-item.active {
  color: #fff;
  border-left-color: #FF6B35;
  background: rgba(255,107,53,0.2);
  font-weight: 600;
  box-shadow: inset 0 0 0 1px rgba(255,107,53,0.25);
}

.nav-item.active::before {
  background: rgba(255,255,255,0.08);
}

.nav-item .nav-icon {
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  opacity: 0.85;
}

.nav-item:hover .nav-icon,
.nav-item.active .nav-icon {
  opacity: 1;
}

.nav-item .nav-badge {
  margin-left: auto;
  background: var(--color-accent);
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: var(--radius-full);
  min-width: 20px;
  text-align: center;
  letter-spacing: 0.3px;
  box-shadow: 0 2px 6px rgba(255,107,53,0.4);
}

.sidebar-footer {
  padding: 14px 20px;
  border-top: 1px solid rgba(255,255,255,0.10);
  font-size: 11.5px;
  color: rgba(255,255,255,0.4);
  position: relative;
  z-index: 2;
  flex-shrink: 0;
}

.sidebar-footer .version {
  display: flex;
  align-items: center;
  gap: 7px;
  letter-spacing: 0.2px;
}

.sidebar-footer .online-dot {
  width: 6px;
  height: 6px;
  background: var(--color-success);
  border-radius: 50%;
  box-shadow: 0 0 6px rgba(16,185,129,0.6);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* 主内容区 */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
}

/* 顶部栏 */
.top-header {
  height: var(--header-height);
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 28px;
  gap: 16px;
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: var(--shadow-xs);
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 18px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.mobile-menu-btn:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-100);
  color: var(--color-primary);
}

.header-breadcrumb {
  font-size: 14px;
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-breadcrumb::before {
  content: '';
  display: none;
}

.header-breadcrumb .current {
  color: var(--color-text);
  font-weight: 600;
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 8px 16px;
  width: 260px;
  transition: all var(--transition-fast);
}

.header-search:focus-within {
  border-color: var(--color-primary);
  background: var(--color-bg-white);
  box-shadow: 0 0 0 3px rgba(30,111,255,0.10), var(--shadow-xs);
  width: 300px;
}

.header-search svg { color: var(--color-text-muted); flex-shrink: 0; }

.header-search input {
  border: none;
  background: none;
  outline: none;
  font-size: 13.5px;
  color: var(--color-text);
  width: 100%;
}

.header-search input::placeholder { color: var(--color-text-muted); }

.header-icon-btn {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  font-size: 18px;
  color: var(--color-text-secondary);
  border: none;
  background: none;
}

.header-icon-btn:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.header-icon-btn:active {
  transform: scale(0.93);
}

.header-icon-btn .notif-dot {
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1.5px rgba(239,68,68,0.3);
}

.header-user {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  padding: 5px 10px 5px 5px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
  border: 1px solid transparent;
}

.header-user:hover {
  background: var(--color-bg);
  border-color: var(--color-border);
}

.header-user .avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: #1E6FFF;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.5px;
  flex-shrink: 0;
}

}

.header-user .user-info { line-height: 1.35; }

.header-user .user-name {
  font-size: 13.5px;
  font-weight: 600;
  color: var(--color-text);
}

.header-user .user-role {
  font-size: 11px;
  color: var(--color-primary);
  font-weight: 500;
}

/* 页面内容 */
.page-content {
  padding: 28px 28px 40px;
  flex: 1;
}

/* --- 通用组件 --- */

/* 卡片 */
.card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.7);
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

.card:hover { box-shadow: var(--shadow-md); }

.card-header {
  padding: 16px 22px;
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg-white);
}

.card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 8px;
  letter-spacing: -0.1px;
}

.card-title svg { opacity: 0.7; flex-shrink: 0; }
.card-body { padding: 22px; }

/* 统计卡片 */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 24px;
}

.stat-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226,232,240,0.6);
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all var(--transition-base);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-3px); border-color: transparent; }
.stat-card:hover::before { opacity: 1; }
.stat-card:nth-child(1)::before { background: linear-gradient(90deg, var(--color-primary), transparent); }
.stat-card:nth-child(2)::before { background: linear-gradient(90deg, var(--color-accent), transparent); }
.stat-card:nth-child(3)::before { background: linear-gradient(90deg, var(--color-success), transparent); }
.stat-card:nth-child(4)::before { background: linear-gradient(90deg, #8B5CF6, transparent); }

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
  transition: transform var(--transition-spring);
}

.stat-card:hover .stat-icon { transform: scale(1.08) rotate(-3deg); }
.stat-icon.blue { background: linear-gradient(135deg, rgba(30,111,255,0.12), rgba(30,111,255,0.06)); color: var(--color-primary); }
.stat-icon.orange { background: linear-gradient(135deg, rgba(255,107,53,0.12), rgba(255,107,53,0.06)); color: var(--color-accent); }
.stat-icon.green { background: linear-gradient(135deg, rgba(16,185,129,0.12), rgba(16,185,129,0.06)); color: var(--color-success); }
.stat-icon.purple { background: linear-gradient(135deg, rgba(139,92,246,0.12), rgba(139,92,246,0.06)); color: #8B5CF6; }

.stat-info .stat-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
  font-weight: 500;
  letter-spacing: 0.2px;
}

.stat-info .stat-value {
  font-size: 26px;
  font-weight: 800;
  color: var(--color-text);
  line-height: 1.2;
  letter-spacing: -0.5px;
  font-variant-numeric: tabular-nums;
}

.stat-info .stat-trend { font-size: 12px; margin-top: 4px; font-weight: 600; letter-spacing: 0.2px; }
.stat-info .stat-trend.up { color: var(--color-success); }
.stat-info .stat-trend.down { color: var(--color-danger); }

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 9px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-decoration: none;
  letter-spacing: 0.1px;
  position: relative;
  overflow: hidden;
}

.btn:active { transform: scale(0.97) !important; }

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(30,111,255,0.20);
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-primary);
  transform: translateY(-2px);
  color: #fff;
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(255,107,53,0.22);
}
.btn-accent:hover {
  background: var(--color-accent-dark);
  box-shadow: var(--shadow-accent);
  transform: translateY(-2px);
  color: #fff;
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}
.btn-outline:hover {
  background: var(--color-primary-50);
  box-shadow: 0 0 0 3px rgba(30,111,255,0.08);
  color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  padding: 8px 16px;
}
.btn-ghost:hover { background: var(--color-bg); color: var(--color-text); }

.btn-sm { padding: 6px 14px; font-size: 13px; }
.btn-lg { padding: 12px 28px; font-size: 15px; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; transform: none !important; box-shadow: none !important; }

/* 标签/徽章 */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: var(--radius-full);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.tag-blue { background: var(--color-primary-100); color: var(--color-primary); }
.tag-green { background: var(--color-success-light); color: var(--color-success); }
.tag-orange { background: rgba(255,107,53,0.10); color: var(--color-accent); }
.tag-red { background: var(--color-danger-light); color: var(--color-danger); }
.tag-purple { background: rgba(139,92,246,0.10); color: #7C3AED; }
.tag-gray { background: rgba(139,148,174,0.10); color: var(--color-text-muted); }
.tag-yellow { background: var(--color-warning-light); color: #B45309; }

/* 进度条 */
.progress-bar {
  height: 6px;
  background: var(--color-bg);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 20px;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4));
  border-radius: var(--radius-full);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.progress-fill.active::after { opacity: 1; }
.progress-fill.blue { background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light)); }
.progress-fill.orange { background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light)); }
.progress-fill.green { background: linear-gradient(90deg, var(--color-success), #34D399); }

/* 表格 */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-md);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th {
  background: var(--color-bg);
  padding: 11px 16px;
  text-align: left;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
  letter-spacing: 0.4px;
  text-transform: uppercase;
}

.data-table td {
  padding: 14px 16px;
  font-size: 14px;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
  vertical-align: middle;
  transition: background var(--transition-fast);
}

.data-table tbody tr {
  transition: all var(--transition-fast);
}

.data-table tbody tr:hover td {
  background: var(--color-primary-50);
}

.data-table tbody tr:last-child td { border-bottom: none; }
.data-table tbody tr:last-child:hover td { background: var(--color-primary-50); }

/* 表单 */
.form-group { margin-bottom: 20px; }
.form-label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
  letter-spacing: 0.2px;
}
.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg-white);
  transition: all var(--transition-fast);
  outline: none;
}
.form-control:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,111,255,0.10);
  background: var(--color-bg-white);
}
.form-control::placeholder { color: var(--color-text-muted); }
select.form-control { cursor: pointer; }

/* 空状态 */
.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--color-text-muted);
}
.empty-state .empty-icon { font-size: 48px; margin-bottom: 16px; opacity: 0.35; }
.empty-state .empty-title { font-size: 15px; font-weight: 600; color: var(--color-text-secondary); margin-bottom: 6px; }
.empty-state .empty-desc { font-size: 13px; margin-bottom: 20px; }

/* 分页 */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 28px;
}
.page-btn {
  min-width: 36px;
  height: 36px;
  padding: 0 10px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-white);
  font-size: 14px;
  color: var(--color-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  font-weight: 500;
}
.page-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-50);
}
.page-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(30,111,255,0.22);
  font-weight: 700;
}
.page-btn:disabled { opacity: 0.4; cursor: not-allowed; }

/* Toast 提示 */
.toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 9999;
  background: var(--color-text);
  color: #fff;
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  transform: translateY(12px);
  transition: all var(--transition-base);
  pointer-events: none;
  max-width: 320px;
}
.toast.show { opacity: 1; transform: translateY(0); }
.toast.success { border-left: 4px solid var(--color-success); }
.toast.error { border-left: 4px solid var(--color-danger); }
.toast.warning { border-left: 4px solid var(--color-warning); }

/* --- 页面特定样式 --- */

/* Hero Banner */
.hero-section {
  background: linear-gradient(135deg, #1E6FFF 0%, #1048CC 55%, #0D3DBB 100%);
  color: #fff;
  padding: 44px 40px;
  border-radius: var(--radius-xl);
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(30,111,255,0.25), 0 2px 8px rgba(30,111,255,0.12);
}

.hero-section::after {
  content: '';
  position: absolute;
  top: -40%;
  right: -8%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(255,107,53,0.18) 0%, rgba(255,255,255,0.06) 50%, transparent 70%);
  border-radius: 50%;
  animation: heroOrb 6s ease-in-out infinite alternate;
}

.hero-section::before {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(77,145,255,0.15) 0%, transparent 70%);
  border-radius: 50%;
}

@keyframes heroOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(10px, 15px) scale(1.05); }
}

.hero-greeting {
  font-size: 14px;
  color: rgba(255,255,255,0.75);
  margin-bottom: 8px;
  letter-spacing: 0.3px;
}

.hero-title {
  font-size: 30px;
  font-weight: 800;
  margin-bottom: 8px;
  line-height: 1.25;
  letter-spacing: -0.3px;
  position: relative;
  z-index: 1;
}

.hero-title .accent { color: var(--color-accent-light); }

.hero-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.65);
  margin-bottom: 28px;
  letter-spacing: 0.2px;
}

.hero-stats {
  display: flex;
  gap: 44px;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
}

.hero-stat-item { text-align: center; }

.hero-stat-value {
  font-size: 30px;
  font-weight: 800;
  letter-spacing: -0.5px;
  font-variant-numeric: tabular-nums;
}

.hero-stat-label {
  font-size: 12px;
  color: rgba(255,255,255,0.6);
  margin-top: 3px;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  position: relative;
  z-index: 1;
}

.hero-actions .btn-primary {
  background: #fff;
  color: var(--color-primary);
  font-weight: 700;
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.hero-actions .btn-primary:hover {
  background: rgba(255,255,255,0.92);
  box-shadow: 0 6px 20px rgba(0,0,0,0.2);
  transform: translateY(-2px);
}

.hero-actions .btn-outline-white {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.45);
  font-weight: 600;
}

.hero-actions .btn-outline-white:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.8);
}

/* 快捷入口 */
.quick-entry {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.quick-entry-item {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 22px 18px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1.5px solid rgba(226,232,240,0.6);
  text-decoration: none;
  display: block;
  position: relative;
  overflow: hidden;
}

.quick-entry-item::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
  opacity: 0.5;
}

.quick-entry-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: transparent;
}

.quick-entry-item:hover::before { transform: scaleX(1); }

.quick-entry-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 12px;
  font-size: 24px;
  transition: transform var(--transition-spring);
}

.quick-entry-item:hover .quick-entry-icon { transform: translateY(-3px) scale(1.06); }

.quick-entry-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
  letter-spacing: -0.1px;
}

.quick-entry-desc {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* 课程卡片 */
.course-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.course-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1.5px solid rgba(226,232,240,0.6);
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
  display: block;
  color: inherit;
}

.course-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.course-thumb {
  height: 162px;
  position: relative;
  overflow: hidden;
}

.course-thumb-bg {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 40px;
  transition: transform var(--transition-slow);
}

.course-card:hover .course-thumb-bg { transform: scale(1.04); }

/* 重点推荐卡片 — 柔和高亮 */
.course-card.featured {
  border-color: var(--color-primary-200, #b3d4ff);
  box-shadow: 0 0 0 1px var(--color-primary-100, #cce0ff), var(--shadow-md);
}
.course-card.featured:hover {
  box-shadow: 0 0 0 1px var(--color-primary-200, #a0c8ff), var(--shadow-lg);
}

.course-tag {
  position: absolute;
  top: 10px;
  left: 10px;
}

.course-duration {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.55);
  color: #fff;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  backdrop-filter: blur(4px);
  font-weight: 500;
}

.course-info {
  padding: 16px 18px;
}

.course-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.45;
  letter-spacing: -0.1px;
  min-height: 44px;
}

.course-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 12px;
  color: var(--color-text-muted);
  margin-bottom: 12px;
  font-weight: 500;
}

.course-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.course-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.course-price {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.5px;
}

.course-price.free { color: var(--color-success); font-size: 16px; }

.course-progress-wrap {
  flex: 1;
  margin-right: 12px;
}

.course-progress-label {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 5px;
  display: flex;
  justify-content: space-between;
  font-weight: 500;
}

/* 订单卡片 */
.order-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.order-card {
  background: var(--color-bg-white);
  border-radius: var(--radius-lg);
  padding: 20px;
  border: 1.5px solid rgba(226,232,240,0.6);
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
}

.order-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 0;
  background: var(--color-primary);
  transition: height var(--transition-base);
  border-radius: 0 0 2px 0;
}

.order-card:hover {
  border-color: transparent;
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-3px);
}

.order-card:hover::before { height: 100%; }

.order-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  padding-left: 2px;
}

.order-card-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.4;
  flex: 1;
  padding-right: 8px;
}

.order-card-body {
  margin-bottom: 14px;
}

.order-card-row {
  display: flex;
  justify-content: space-between;
  font-size: 13px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--color-border-light);
}

.order-card-row:last-child { border-bottom: none; }
.order-card-label { color: var(--color-text-muted); }
.order-card-value { color: var(--color-text); font-weight: 600; }

.order-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.order-reward {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.5px;
}

.order-reward small { font-size: 11px; font-weight: 500; color: var(--color-text-muted); }

/* Tab 导航 */
.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 2px solid var(--color-border);
  margin-bottom: 24px;
}

.tab-item {
  padding: 10px 22px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  position: relative;
}

.tab-item:hover { color: var(--color-primary); background: var(--color-primary-50); }

.tab-item.active {
  color: var(--color-primary);
  border-bottom-color: transparent;
  background: var(--color-primary-50);
}

.tab-item.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px 1px 0 0;
}

/* 用户中心 */
.user-header-card {
  background: linear-gradient(135deg, #1E6FFF, #0D3DBB);
  border-radius: var(--radius-xl);
  padding: 32px;
  color: #fff;
  margin-bottom: 24px;
  position: relative;
  overflow: hidden;
}

.user-header-card::before {
  content: '';
  position: absolute;
  top: -60px;
  right: -60px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent 70%);
  border-radius: 50%;
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 24px;
}

.user-avatar-lg {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  border: 3px solid rgba(255,255,255,0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.user-details h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 4px;
}

.user-details p {
  font-size: 13px;
  color: rgba(255,255,255,0.75);
}

.user-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.15);
  padding: 6px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  backdrop-filter: blur(4px);
}

.user-stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.2);
}

.user-stat-item { text-align: center; }

.user-stat-num {
  font-size: 22px;
  font-weight: 700;
  font-family: "SF Mono", monospace;
}

.user-stat-label {
  font-size: 11px;
  color: rgba(255,255,255,0.65);
  margin-top: 2px;
}

/* 进度环形图 */
.progress-ring-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.progress-ring {
  position: relative;
  width: 80px;
  height: 80px;
}

.progress-ring svg {
  transform: rotate(-90deg);
}

.progress-ring circle {
  fill: none;
  stroke-width: 6;
}

.progress-ring .bg { stroke: rgba(30,111,255,0.15); }
.progress-ring .fill {
  stroke: var(--color-primary);
  stroke-linecap: round;
  transition: stroke-dashoffset 1s ease;
}

.progress-ring .pct {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-text);
}

/* 菜单网格 */
.menu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.menu-item {
  background: var(--color-bg-white);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  padding: 20px 16px;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  display: block;
  color: inherit;
}

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

.menu-icon {
  font-size: 28px;
  margin-bottom: 8px;
}

.menu-name {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 4px;
}

.menu-count {
  font-size: 11px;
  color: var(--color-text-muted);
}

/* Banner轮播 */
.banner-carousel {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: 24px;
  height: 278px;
  box-shadow: var(--shadow-lg);
}

.banner-slides {
  display: flex;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1);
  height: 100%;
}

.banner-slide {
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  padding: 0 52px;
  color: #fff;
  position: relative;
}

.banner-slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(13,50,160,0.88) 0%, rgba(30,111,255,0.65) 100%);
}

.banner-content {
  position: relative;
  z-index: 2;
  max-width: 520px;
}

.banner-content h2 {
  font-size: 26px;
  font-weight: 800;
  margin-bottom: 12px;
  line-height: 1.3;
  letter-spacing: -0.3px;
}

.banner-content p {
  font-size: 14px;
  opacity: 0.88;
  margin-bottom: 22px;
  line-height: 1.6;
}

.banner-dots {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 8px;
  z-index: 10;
}

.banner-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255,255,255,0.45);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
}

.banner-dot.active {
  width: 26px;
  border-radius: 4px;
  background: #fff;
  box-shadow: 0 2px 8px rgba(255,255,255,0.4);
}

.banner-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.18);
  border: 1.5px solid rgba(255,255,255,0.25);
  border-radius: 50%;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  transition: all var(--transition-fast);
  backdrop-filter: blur(4px);
}

.banner-nav:hover {
  background: rgba(255,255,255,0.32);
  border-color: rgba(255,255,255,0.5);
  transform: translateY(-50%) scale(1.08);
}
.banner-nav:active { transform: translateY(-50%) scale(0.95); }
.banner-nav.prev { left: 16px; }
.banner-nav.next { right: 16px; }

/* 列表条目 */
.list-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid var(--color-border-light);
  cursor: pointer;
  transition: all var(--transition-fast);
  border-radius: var(--radius-sm);
}

.list-item:last-child { border-bottom: none; }
.list-item:hover {
  background: var(--color-primary-50);
  margin: 0 -22px;
  padding: 13px 22px;
}

.list-thumb {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg);
}

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

.list-title {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.list-sub {
  font-size: 12px;
  color: var(--color-text-muted);
}

/* 工具类 */
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--color-text-muted); }
.text-primary { color: var(--color-primary); }
.text-accent { color: var(--color-accent); }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.truncate { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* --- 响应式布局 --- */
@media (max-width: 1024px) {
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .course-grid { grid-template-columns: repeat(2, 1fr); }
  .quick-entry { grid-template-columns: repeat(2, 1fr); }
  .hero-stats { gap: 28px; }
  .menu-grid { grid-template-columns: repeat(3, 1fr); }
  .hero-section { padding: 38px 32px; }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: 268px;
  }

  .sidebar.open {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }

  .main-content {
    margin-left: 0;
  }

  .mobile-menu-btn {
    display: flex;
  }

  .page-content {
    padding: 16px;
  }

  .hero-section {
    padding: 26px 22px;
  }

  .hero-title { font-size: 22px; }
  .hero-stats { gap: 16px; flex-wrap: wrap; }
  .hero-stat-value { font-size: 22px; }

  .stat-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .stat-card { padding: 16px; }

  .course-grid { grid-template-columns: 1fr; }
  .order-grid { grid-template-columns: 1fr; }

  .quick-entry { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .quick-entry-item { padding: 16px; }

  .menu-grid { grid-template-columns: repeat(3, 1fr); }

  .user-stats-row { grid-template-columns: repeat(2, 1fr); gap: 12px; }

  .header-search { display: none; }

  .user-header-card { padding: 24px 20px; }

  .tab-nav { overflow-x: auto; }
  .tab-item { padding: 9px 16px; font-size: 13px; }

  .banner-carousel { height: 200px; }
  .banner-slide { padding: 0 24px; }
  .banner-content h2 { font-size: 19px; }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26,31,54,0.45);
    backdrop-filter: blur(2px);
    z-index: 99;
    display: none;
  }

  .sidebar-overlay.show { display: block; }
}

/* --- 动画 --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-16px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-in {
  animation: fadeInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-in-fast {
  animation: fadeInUp 0.25s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.animate-scale {
  animation: scaleIn 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
}

.animate-delay-1 { animation-delay: 0.08s; opacity: 0; }
.animate-delay-2 { animation-delay: 0.16s; opacity: 0; }
.animate-delay-3 { animation-delay: 0.24s; opacity: 0; }
.animate-delay-4 { animation-delay: 0.32s; opacity: 0; }
.animate-delay-5 { animation-delay: 0.40s; opacity: 0; }

/* 滚动触发动画 */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- 自定义滚动条 --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(139,148,174,0.35); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(139,148,174,0.55); }

/* Firefox */
* { scrollbar-width: thin; scrollbar-color: rgba(139,148,174,0.35) transparent; }

/* --- 打印样式 --- */
@media print {
  .sidebar, .top-header, .header-actions, .mobile-menu-btn { display: none !important; }
  .main-content { margin-left: 0 !important; }
  body { background: white; }
}

/* --- 加载骨架屏 --- */
.skeleton {
  background: linear-gradient(90deg, var(--color-bg) 25%, rgba(226,232,240,0.5) 50%, var(--color-bg) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.skeleton-text { height: 14px; margin-bottom: 8px; }
.skeleton-text:last-child { width: 70%; }
.skeleton-avatar { width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0; }
.skeleton-card { height: 160px; border-radius: var(--radius-lg); }

/* ============================================
   提现弹窗模块
   ============================================ */
.withdraw-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.55);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}
.withdraw-modal-overlay.active { display: flex; }

.withdraw-modal {
  background: #fff;
  border-radius: var(--radius-xl);
  width: 420px;
  max-width: 92vw;
  max-height: 85vh;
  overflow-y: auto;
  padding: 28px 28px 24px;
  box-shadow: var(--shadow-xl);
  animation: modalIn .25s ease;
  position: relative;
}

.withdraw-modal h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin: 0 0 4px;
  letter-spacing: -0.2px;
}

.withdraw-modal .modal-subtitle {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 20px;
}

.withdraw-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: none;
  background: var(--color-bg);
  color: var(--color-text-muted);
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}
.withdraw-close-btn:hover { background: var(--color-border); color: var(--color-text); }

.withdraw-balance-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: linear-gradient(135deg, var(--color-primary-50), rgba(30,111,255,0.03));
  border-radius: var(--radius-md);
  margin-bottom: 22px;
  border: 1px solid var(--color-primary-200);
}
.withdraw-balance-card .balance-label {
  font-size: 13px;
  color: var(--color-text-secondary);
  font-weight: 500;
}
.withdraw-balance-card .balance-value {
  font-size: 22px;
  font-weight: 700;
  color: var(--color-primary);
  font-family: "SF Mono", "Consolas", monospace;
}

.withdraw-form-group {
  margin-bottom: 18px;
}
.withdraw-form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}
.withdraw-form-group input[type="text"],
.withdraw-form-group input[type="number"],
.withdraw-form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg-white);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
  font-family: inherit;
}
.withdraw-form-group input:focus,
.withdraw-form-group select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}
.withdraw-form-group input::placeholder {
  color: var(--color-text-muted);
}
.withdraw-form-group .hint {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 6px;
  line-height: 1.5;
}
.withdraw-form-group .error-text {
  font-size: 12px;
  color: var(--color-danger);
  margin-top: 4px;
  display: none;
}

.withdraw-submit-btn {
  width: 100%;
  padding: 12px 0;
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-align: center;
  margin-top: 4px;
}
.withdraw-submit-btn:hover { background: var(--color-primary-dark); }
.withdraw-submit-btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* ============================================
   学习进度 — 课程卡片
   ============================================ */
.course-card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.course-card-grid .course-card {
  display: flex;
  gap: 14px;
  padding: 14px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  min-height: 84px;
  align-items: center;
  transition: all var(--transition-fast);
}
.course-card-grid .course-card:hover { background: var(--color-primary-50); }
.course-card-grid .course-card-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.course-card-grid .course-card-info {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.course-card-grid .course-card-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.course-progress-label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: 4px;
}
.course-progress-label .progress-pct { font-weight: 600; }

/* 进度条统一 */
.progress-bar {
  height: 6px;
  background: var(--color-border-light);
  border-radius: 3px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  border-radius: 3px;
  transition: width 0.6s ease;
}

/* ============================================
   业绩趋势 — 标题与切换按钮对齐
   ============================================ */
.chart-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.chart-period-btns {
  display: flex;
  gap: 4px;
}
.chart-period-btn {
  padding: 5px 12px;
  font-size: 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-bg-white);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-weight: 500;
  line-height: 1.4;
}
.chart-period-btn:hover {
  border-color: var(--color-primary-200);
  color: var(--color-primary);
  background: var(--color-primary-50);
}
.chart-period-btn.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
  font-weight: 600;
}

/* ============================================
   空状态引导
   ============================================ */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  text-align: center;
}
.empty-state-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  opacity: 0.6;
}
.empty-state-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}
.empty-state-desc {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 16px;
  line-height: 1.5;
}
.empty-state-action {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-50);
  border: 1px solid var(--color-primary-200);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}
.empty-state-action:hover {
  background: var(--color-primary);
  color: #fff;
}

/* ============================================
   表单输入框统一
   ============================================ */
.form-input {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg-white);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
  font-family: inherit;
}
.form-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}
.form-input::placeholder { color: var(--color-text-muted); }
.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-bg-white);
  outline: none;
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  box-sizing: border-box;
  font-family: inherit;
  appearance: auto;
}
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-50);
}

/* ============================================
   表格统一样式
   ============================================ */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
.data-table thead tr {
  background: var(--color-bg);
  border-bottom: 2px solid var(--color-border);
}
.data-table th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  color: var(--color-text-secondary);
  white-space: nowrap;
}
.data-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--color-border-light);
}
.data-table tbody tr:hover { background: var(--color-primary-50); }
.data-table .text-right { text-align: right; }
.data-table .text-center { text-align: center; }

/* ============================================
   模块间距统一
   ============================================ */
.card + .card { margin-top: 20px; }

/* ============================================
   快捷功能入口卡片
   ============================================ */
.quick-actions-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.quick-action-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 14px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: all var(--transition-fast);
  color: var(--color-text);
  font-size: 13px;
  font-weight: 500;
}
.quick-action-item:hover { background: var(--color-primary-50); color: var(--color-primary); }
.quick-action-item .qa-count {
  font-size: 12px;
  color: var(--color-text-muted);
  font-weight: 400;
}

/* ============================================
   字号层级增强
   ============================================ */
.text-lg { font-size: 16px; }
.text-md { font-size: 14px; }
.text-sm { font-size: 13px; }
.text-xs { font-size: 12px; }


/* ============================================
   分销推广 - 汇总卡片和方案卡片
   ============================================ */
.distrib-summary-card {
  border-radius: var(--radius-md);
  padding: 18px 16px;
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition-base);
}
.distrib-summary-num {
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
}
.distrib-summary-label {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-top: 4px;
}
.btn-withdraw-quick {
  margin-top: 10px;
  padding: 6px 18px;
  background: linear-gradient(135deg,#FF6B35,#FF8C5A);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 2px 8px rgba(255,107,53,0.2);
}
.btn-withdraw-quick:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255,107,53,0.3);
}

/* 方案卡片 */
.distrib-plan-card {
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
  cursor: pointer;
  transition: all 0.25s ease;
}
.plan-card-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 6px;
}
.plan-card-detail {
  font-size: 12px;
  color: var(--color-text-muted);
}
.plan-card-commission {
  font-size: 12px;
  color: var(--color-accent);
  margin-top: 2px;
  font-weight: 500;
}

/* ============================================
   最新收益列表
   ============================================ */
.earnings-list .list-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-fast);
}
.earnings-list .list-item:last-child { border-bottom: none; }
.earnings-list .list-item:hover { background: var(--color-bg); }


/* ============================================
   课程卡片 (学习进度区)
   ============================================ */
.course-card-grid .course-card {
  display: flex;
  gap: 14px;
  padding: 14px;
  background: var(--color-bg);
  border-radius: var(--radius-md);
  align-items: center;
}
.course-card-grid .course-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.course-card-grid .course-card-info {
  flex: 1;
  min-width: 0;
}
.course-card-grid .course-card-name {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.course-card-grid .course-card .progress-bar {
  height: 4px;
  margin-top: 6px;
}
.course-card-grid .course-card .course-progress-label {
  font-size: 11px;
  display: flex;
  justify-content: space-between;
}
.progress-pct {
  font-weight: 500;
}

/* ============================================
   图表区
   ============================================ */
.chart-period-btns {
  display: flex;
  gap: 6px;
  align-items: center;
}

/* ============================================
   快捷功能菜单项
   ============================================ */
.menu-item-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 6px;
}
.menu-item-name {
  font-size: 12px;
  font-weight: 500;
  color: var(--color-text);
}
.menu-item-badge {
  font-size: 10px;
  color: var(--color-text-muted);
}



/* === Mentor Tabs === */
.mentor-tabs {
  display: flex !important;
  justify-content: center;
  gap: 10px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  max-width: 100%;
  overflow: visible;
}

.mentor-tab {
  padding: 10px 22px;
  border: 1.5px solid var(--color-border);
  background: white;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
  display: inline-block !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.mentor-tab:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.mentor-tab.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}


/* 确保 mentor-tabs 不被父容器裁剪 */
.mentor-tabs,
.mentor-tabs + *,
main > section,
main > div {
  overflow: visible !important;
}


/* 确保 mentor-tabs 不被父容器裁剪 */
.mentor-tabs,
.mentor-tabs + *,
main > section,
main > div {
  overflow: visible !important;
}