/* ============================================
   CRS Compass — 全局设计系统
   风格：专业、可信、克制、高端
   适用场景：税务/财富管理/合规咨询
   ============================================ */

/* --- CSS Variables（设计令牌） --- */
:root {
  /* 主色：深海蓝（Primary）— 导航栏、主按钮、标题 */
  --color-primary: #1e3a5f;
  --color-primary-light: #2a4f80;
  --color-primary-dark: #0f2440;
  --color-primary-50: #eef3f8;
  --color-primary-100: #d4dfec;
  --color-primary-200: #a9bdd3;
  --color-primary-600: #1e3a5f;
  --color-primary-700: #162e4d;
  --color-primary-800: #0f2440;

  /* 辅助色：琥珀金（Secondary）— 强调、高亮、CTA hover */
  --color-accent: #c9983a;
  --color-accent-light: #d4a84d;
  --color-accent-dark: #a67d2e;
  --color-accent-50: #fdf9f0;
  --color-accent-100: #f7ecd4;

  /* 语义色 */
  --color-success: #38a169;
  --color-success-bg: #ecfdf5;
  --color-warning: #d69e2e;
  --color-warning-bg: #fffbeb;
  --color-danger: #e53e3e;
  --color-danger-bg: #fef2f2;
  --color-info: #1e3a5f;
  --color-info-bg: #eef3f8;

  /* 中性色 */
  --color-gray-50: #f7fafc;
  --color-gray-100: #edf2f7;
  --color-gray-200: #e2e8f0;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;
  --color-gray-900: #111827;

  /* 背景 */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-dark: #0f172a;

  /* 文字 */
  --text-primary: #1a202c;
  --text-secondary: #718096;
  --text-tertiary: #a0aec0;
  --text-inverse: #ffffff;
  --text-accent: #c9983a;

  /* 字体 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* 字号 */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;

  /* 间距 */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* 圆角 */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;

  /* 布局 */
  --max-width: 1200px;
  --nav-height: 64px;
  --sidebar-width: 260px;
}

/* --- 基础重置 --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--bg-secondary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

/* --- 排版 --- */
.heading-1 { font-size: var(--text-4xl); font-weight: 700; line-height: 1.2; letter-spacing: -0.02em; color: var(--text-primary); }
.heading-2 { font-size: var(--text-3xl); font-weight: 700; line-height: 1.25; letter-spacing: -0.01em; color: var(--text-primary); }
.heading-3 { font-size: var(--text-2xl); font-weight: 600; line-height: 1.3; color: var(--text-primary); }
.heading-4 { font-size: var(--text-xl); font-weight: 600; line-height: 1.35; color: var(--text-primary); }
.body-lg { font-size: var(--text-lg); line-height: 1.7; color: var(--text-secondary); }
.body-base { font-size: var(--text-base); line-height: 1.6; color: var(--text-secondary); }
.body-sm { font-size: var(--text-sm); line-height: 1.5; color: var(--text-secondary); }
.caption { font-size: var(--text-xs); line-height: 1.5; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.05em; font-weight: 500; }

/* --- 布局容器 --- */
.container { width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 var(--space-6); }
.section { padding: var(--space-16) 0; }
.section-sm { padding: var(--space-10) 0; }

/* --- 按钮系统 --- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-md);
  font-family: var(--font-sans); font-size: var(--text-sm); font-weight: 500;
  line-height: 1; cursor: pointer; border: 1px solid transparent;
  transition: all var(--transition-fast); white-space: nowrap;
  text-decoration: none;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-primary { background: var(--color-primary); color: var(--text-inverse); border-color: var(--color-primary); }
.btn-primary:hover:not(:disabled) { background: var(--color-primary-light); border-color: var(--color-primary-light); }

.btn-accent { background: var(--color-accent); color: var(--text-inverse); border-color: var(--color-accent); }
.btn-accent:hover:not(:disabled) { background: var(--color-accent-dark); border-color: var(--color-accent-dark); }

.btn-outline { background: transparent; color: var(--color-primary); border-color: var(--color-primary-200); }
.btn-outline:hover:not(:disabled) { background: var(--color-primary-50); border-color: var(--color-primary); }

.btn-ghost { background: transparent; color: var(--text-secondary); border-color: transparent; }
.btn-ghost:hover:not(:disabled) { background: var(--color-gray-100); color: var(--text-primary); }

.btn-danger { background: var(--color-danger); color: var(--text-inverse); }
.btn-danger:hover:not(:disabled) { background: #991b1b; }

.btn-lg { padding: var(--space-4) var(--space-8); font-size: var(--text-base); border-radius: var(--radius-lg); }
.btn-sm { padding: var(--space-2) var(--space-4); font-size: var(--text-xs); }
.btn-block { width: 100%; }

/* --- 卡片系统 --- */
.card {
  background: var(--bg-primary); border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200); padding: var(--space-6);
  transition: box-shadow var(--transition-base);
}
.card-hover:hover { box-shadow: var(--shadow-lg); border-color: var(--color-gray-300); }
.card-elevated { box-shadow: var(--shadow-md); border-color: transparent; }
.card-accent { border-left: 3px solid var(--color-accent); }

/* --- 表单系统 --- */
.form-group { margin-bottom: var(--space-5); }
.form-label {
  display: block; font-size: var(--text-sm); font-weight: 500;
  color: var(--text-primary); margin-bottom: var(--space-2);
}
.form-input {
  width: 100%; padding: var(--space-3) var(--space-4); border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md); font-size: var(--text-base); font-family: var(--font-sans);
  color: var(--text-primary); background: var(--bg-primary); transition: border-color var(--transition-fast);
  line-height: 1.5;
}
.form-input:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1); }
.form-input::placeholder { color: var(--text-tertiary); }
.form-input-error { border-color: var(--color-danger); }
.form-hint { font-size: var(--text-xs); color: var(--text-tertiary); margin-top: var(--space-1); }
.form-error { font-size: var(--text-xs); color: var(--color-danger); margin-top: var(--space-1); }

textarea.form-input { resize: vertical; min-height: 100px; }

/* --- 徽章 --- */
.badge {
  display: inline-flex; align-items: center; padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full); font-size: var(--text-xs); font-weight: 500;
}
.badge-primary { background: var(--color-primary-50); color: var(--color-primary); }
.badge-accent { background: var(--color-accent-50); color: var(--color-accent-dark); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); }
.badge-warning { background: var(--color-warning-bg); color: var(--color-warning); }
.badge-danger { background: var(--color-danger-bg); color: var(--color-danger); }

/* --- 导航栏 --- */
.navbar {
  height: var(--nav-height); background: var(--bg-primary);
  border-bottom: 1px solid var(--color-gray-200);
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center;
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.navbar-brand { display: flex; align-items: center; gap: var(--space-3); font-weight: 700; font-size: var(--text-lg); color: var(--color-primary); }
.navbar-brand svg, .navbar-brand img { height: 32px; width: auto; }
.navbar-links { display: flex; align-items: center; gap: var(--space-6); }
.navbar-link { font-size: var(--text-sm); font-weight: 500; color: var(--text-secondary); transition: color var(--transition-fast); }
.navbar-link:hover, .navbar-link.active { color: var(--color-primary); }
.navbar-actions { display: flex; align-items: center; gap: var(--space-3); }

/* 移动端菜单 */
.navbar-mobile-toggle {
  display: none; background: none; border: none; padding: var(--space-2);
  cursor: pointer; color: var(--text-primary);
}
.navbar-mobile-menu {
  display: none; position: fixed; top: var(--nav-height); left: 0; right: 0;
  bottom: 0; background: var(--bg-primary); z-index: 99;
  padding: var(--space-6); flex-direction: column; gap: var(--space-4);
  border-top: 1px solid var(--color-gray-200);
}
.navbar-mobile-menu.is-open { display: flex; }
.navbar-mobile-menu a {
  font-size: var(--text-lg); padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-gray-100); color: var(--text-primary);
}

/* --- 页脚 --- */
.footer {
  background: var(--bg-dark); color: var(--color-gray-400);
  padding: var(--space-16) 0 var(--space-8);
}
.footer a { color: var(--color-gray-300); }
.footer a:hover { color: var(--text-inverse); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: var(--space-10); }
.footer-brand { }
.footer-brand-name { font-size: var(--text-xl); font-weight: 700; color: var(--text-inverse); margin-bottom: var(--space-3); }
.footer-brand-desc { font-size: var(--text-sm); line-height: 1.7; color: var(--color-gray-400); }
.footer-column h4 { color: var(--text-inverse); font-size: var(--text-sm); font-weight: 600; margin-bottom: var(--space-4); text-transform: uppercase; letter-spacing: 0.05em; }
.footer-column ul { list-style: none; }
.footer-column li { margin-bottom: var(--space-2); }
.footer-column li a { font-size: var(--text-sm); }
.footer-bottom {
  margin-top: var(--space-10); padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; justify-content: space-between; align-items: center;
  font-size: var(--text-xs); color: var(--color-gray-500);
}

/* --- 页面布局 --- */
.page-wrapper { min-height: calc(100vh - var(--nav-height)); }
.page-header {
  background: var(--bg-primary); border-bottom: 1px solid var(--color-gray-200);
  padding: var(--space-8) 0;
}
.page-header-title { font-size: var(--text-2xl); font-weight: 700; color: var(--text-primary); }
.page-header-subtitle { font-size: var(--text-base); color: var(--text-secondary); margin-top: var(--space-2); }
.page-content { padding: var(--space-8) 0; }

/* 仪表盘布局 */
.dashboard-layout { display: flex; min-height: calc(100vh - var(--nav-height)); }
.dashboard-sidebar {
  width: var(--sidebar-width); background: var(--bg-primary);
  border-right: 1px solid var(--color-gray-200); padding: var(--space-6);
  position: sticky; top: var(--nav-height); height: calc(100vh - var(--nav-height));
  overflow-y: auto; flex-shrink: 0;
}
.dashboard-main { flex: 1; padding: var(--space-8); overflow-x: hidden; }

.sidebar-nav { display: flex; flex-direction: column; gap: var(--space-1); }
.sidebar-link {
  display: flex; align-items: center; gap: var(--space-3); padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md); font-size: var(--text-sm); font-weight: 500;
  color: var(--text-secondary); transition: all var(--transition-fast);
}
.sidebar-link:hover { background: var(--color-gray-100); color: var(--text-primary); }
.sidebar-link.active { background: var(--color-primary-50); color: var(--color-primary); font-weight: 600; }
.sidebar-section { margin-bottom: var(--space-6); }
.sidebar-section-title { font-size: var(--text-xs); font-weight: 600; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: var(--space-3); padding: 0 var(--space-4); }

/* --- 统计卡片 --- */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--space-6); }
.stat-card {
  background: var(--bg-primary); border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200); padding: var(--space-6);
}
.stat-card-label { font-size: var(--text-sm); color: var(--text-secondary); margin-bottom: var(--space-2); }
.stat-card-value { font-size: var(--text-3xl); font-weight: 700; color: var(--text-primary); }
.stat-card-change { font-size: var(--text-sm); margin-top: var(--space-2); }
.stat-card-change.positive { color: var(--color-success); }
.stat-card-change.negative { color: var(--color-danger); }

/* --- 表格 --- */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-lg); border: 1px solid var(--color-gray-200); }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-size: var(--text-xs); font-weight: 600; color: var(--text-tertiary); text-transform: uppercase; letter-spacing: 0.05em; padding: var(--space-3) var(--space-4); background: var(--color-gray-50); border-bottom: 1px solid var(--color-gray-200); }
td { padding: var(--space-3) var(--space-4); border-bottom: 1px solid var(--color-gray-100); font-size: var(--text-sm); color: var(--text-primary); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--color-gray-50); }

/* --- 状态组件 --- */
.state-empty, .state-loading, .state-error {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: var(--space-16) var(--space-8); text-align: center;
}
.state-icon { font-size: 3rem; margin-bottom: var(--space-4); color: var(--color-gray-300); }
.state-title { font-size: var(--text-lg); font-weight: 600; color: var(--text-primary); margin-bottom: var(--space-2); }
.state-desc { font-size: var(--text-sm); color: var(--text-secondary); max-width: 360px; }
.state-error .state-icon { color: var(--color-danger); }
.state-error .state-title { color: var(--color-danger); }

/* 骨架屏 */
.skeleton { background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-200) 50%, var(--color-gray-100) 75%); background-size: 200% 100%; animation: skeleton-pulse 1.5s ease-in-out infinite; border-radius: var(--radius-md); }
.skeleton-text { height: 1em; margin-bottom: var(--space-2); }
.skeleton-title { height: 1.5em; width: 60%; margin-bottom: var(--space-4); }
.skeleton-avatar { width: 48px; height: 48px; border-radius: var(--radius-full); }
.skeleton-card { height: 160px; }

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

/* 加载旋转 */
.spinner {
  width: 32px; height: 32px;
  border: 3px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
.spinner-sm { width: 16px; height: 16px; border-width: 2px; }
.spinner-lg { width: 48px; height: 48px; border-width: 4px; }

@keyframes spin { to { transform: rotate(360deg); } }

/* --- Toast 通知 --- */
.toast {
  position: fixed; top: var(--space-4); right: var(--space-4); z-index: 9999;
  padding: var(--space-4) var(--space-6); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl); font-size: var(--text-sm); font-weight: 500;
  transform: translateX(120%); transition: transform var(--transition-base);
  max-width: 400px;
}
.toast.is-visible { transform: translateX(0); }
.toast-success { background: var(--color-success); color: white; }
.toast-error { background: var(--color-danger); color: white; }
.toast-info { background: var(--color-primary); color: white; }

/* --- 诊断流程专用 --- */
.progress-bar { height: 4px; background: var(--color-gray-200); border-radius: var(--radius-full); overflow: hidden; }
.progress-bar-fill { height: 100%; background: var(--color-primary); border-radius: var(--radius-full); transition: width var(--transition-slow); }
.progress-steps { display: flex; justify-content: space-between; position: relative; }
.progress-step {
  display: flex; flex-direction: column; align-items: center; gap: var(--space-2);
  position: relative; z-index: 1;
}
.progress-step-dot {
  width: 32px; height: 32px; border-radius: 50%; border: 2px solid var(--color-gray-300);
  background: var(--bg-primary); display: flex; align-items: center; justify-content: center;
  font-size: var(--text-sm); font-weight: 600; color: var(--text-tertiary);
}
.progress-step.active .progress-step-dot { border-color: var(--color-primary); color: var(--color-primary); background: var(--color-primary-50); }
.progress-step.completed .progress-step-dot { border-color: var(--color-primary); background: var(--color-primary); color: white; }
.progress-step-label { font-size: var(--text-xs); color: var(--text-tertiary); }
.progress-step.active .progress-step-label { color: var(--color-primary); font-weight: 600; }

/* --- 客服微信模块预留 --- */
.wechat-cta {
  background: var(--bg-primary); border: 2px solid var(--color-accent-100);
  border-radius: var(--radius-xl); padding: var(--space-8); text-align: center;
}
.wechat-cta-title { font-size: var(--text-xl); font-weight: 600; color: var(--text-primary); margin-bottom: var(--space-2); }
.wechat-cta-desc { font-size: var(--text-sm); color: var(--text-secondary); margin-bottom: var(--space-6); }
.wechat-qr-placeholder {
  width: 180px; height: 180px; margin: 0 auto var(--space-4);
  background: var(--color-gray-100); border-radius: var(--radius-lg);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-tertiary); font-size: var(--text-sm);
  border: 2px dashed var(--color-gray-300);
}

/* --- 响应式 --- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .dashboard-sidebar { display: none; }
  .dashboard-main { padding: var(--space-4); }
  .dashboard-layout { display: block; }
}

@media (max-width: 768px) {
  :root { --nav-height: 56px; }
  .container { padding: 0 var(--space-4); }
  .heading-1 { font-size: var(--text-3xl); }
  .heading-2 { font-size: var(--text-2xl); }
  .heading-3 { font-size: var(--text-xl); }
  .section { padding: var(--space-10) 0; }
  .navbar-links { display: none; }
  .navbar-mobile-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }
  .footer-bottom { flex-direction: column; gap: var(--space-2); text-align: center; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { padding: var(--space-6) 0; }
  /* 移动端按钮增大触摸区域 */
  .btn { min-height: 44px; }
  .btn-sm { min-height: 36px; font-size: 0.8125rem; }
  /* 移动端输入框 */
  .form-input { min-height: 44px; font-size: 16px; /* 防止 iOS 缩放 */ }
  select.form-input { min-height: 44px; }
  textarea.form-input { min-height: 80px; font-size: 16px; }
  /* 移动端卡片 */
  .card { padding: var(--space-4); }
  .card-elevated { padding: var(--space-4); }
  /* 移动端表格滚动 */
  .admin-table, .inst-table { font-size: 0.75rem; }
  .admin-table th, .admin-table td,
  .inst-table th, .inst-table td { padding: 0.5rem; }
  /* 移动端 stat cards */
  .stat-card { padding: 0.875rem; }
  .stat-card-value { font-size: 1.25rem; }
  /* 移动端 tab 导航溢出 */
  .admin-tabs, .inst-tabs { overflow-x: auto; -webkit-overflow-scrolling: touch; scroll-snap-type: x mandatory; }
  .admin-tab, .inst-tab { scroll-snap-align: start; font-size: 0.75rem; padding: 0.5rem 0.625rem; }
}

@media (max-width: 480px) {
  .heading-1 { font-size: var(--text-2xl); }
  .heading-2 { font-size: var(--text-xl); }
  .btn-lg { padding: var(--space-3) var(--space-6); font-size: var(--text-sm); }
  .stat-grid { grid-template-columns: 1fr 1fr; gap: 0.5rem; }
  .stat-card { padding: 0.75rem; }
  .stat-card-label { font-size: 0.65rem; }
  .stat-card-value { font-size: 1.125rem; }
  .stat-card-change { font-size: 0.65rem; }
  /* 移动端弹层全屏 */
  .modal-content { max-width: 100vw; max-height: 100vh; border-radius: 0; padding: 1.25rem; }
  .modal-overlay { padding: 0; }
}

/* --- 移动端导航菜单增强 --- */
.navbar-mobile-menu {
  padding: var(--space-4) var(--space-4) var(--space-6);
}
.navbar-mobile-menu a {
  min-height: 44px;
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-2);
  font-size: 0.9375rem;
}

/* --- 移动端侧栏抽屉（未来可扩展） --- */
@media (max-width: 1024px) {
  .dashboard-main {
    max-width: 100%;
  }
}

/* --- 表单增强 --- */
.form-input-error {
  border-color: var(--color-danger) !important;
  box-shadow: 0 0 0 3px rgba(185, 28, 28, 0.1) !important;
}
.form-error {
  color: var(--color-danger);
  font-size: 0.75rem;
  margin-top: 0.25rem;
}
.form-hint {
  color: var(--text-tertiary);
  font-size: 0.7rem;
  margin-top: 0.25rem;
}
.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}
.form-input::placeholder {
  color: var(--color-gray-400);
}

/* --- Toast 通知增强 --- */
.toast-notification {
  position: fixed;
  top: 1.5rem;
  right: 1.5rem;
  z-index: 9999;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  transform: translateY(-20px);
  opacity: 0;
  transition: all 0.3s ease;
}
.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
}

/* --- 空状态增强 --- */
.state-empty, .state-loading, .state-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 200px;
  padding: 2rem;
}
.state-icon {
  color: var(--color-gray-300);
  margin-bottom: 1rem;
}
.state-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}
.state-desc {
  font-size: 0.8125rem;
  color: var(--text-tertiary);
  max-width: 320px;
}

/* --- 进度条动画增强 --- */
.progress-bar-fill {
  transition: width 0.5s ease-out;
}

/* --- 按钮危险样式 --- */
.btn-danger {
  background: var(--color-danger);
  color: white;
  border: none;
}
.btn-danger:hover {
  background: #991b1b;
}

/* ═══════════════════════════════════════════════
   加载动画 / 骨架屏 / AI 状态
   ═══════════════════════════════════════════════ */

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes ai-dot {
  0%, 80%, 100% { transform: scale(0); opacity: 0.5; }
  40% { transform: scale(1); opacity: 1; }
}

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

.skeleton-line {
  background: linear-gradient(90deg, var(--color-gray-100) 25%, var(--color-gray-50) 50%, var(--color-gray-100) 75%);
  background-size: 200% 100%;
  animation: skeleton-shimmer 1.5s infinite;
  border-radius: 4px;
}

.spinner {
  border: 2px solid var(--color-gray-200);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

.fade-in {
  animation: fade-in 0.3s ease-out;
}

/* AI 状态标签 */
.ai-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: 9999px;
  font-size: var(--text-xs);
  font-weight: 500;
}

.ai-status-badge.mock {
  background: var(--color-warning-bg, #fff7ed);
  color: var(--color-warning);
}

.ai-status-badge.live {
  background: var(--color-success-bg);
  color: var(--color-success);
}

.ai-status-badge .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: currentColor;
}

/* ============================================
   v3.0 UX 优化追加样式
   ============================================ */

/* === 法律页面样式 === */
.legal-page {
  background: var(--bg-secondary);
  min-height: calc(100vh - var(--nav-height));
  padding: 2rem 1rem 4rem;
}
.legal-container {
  max-width: 780px;
  margin: 0 auto;
  background: var(--bg-primary);
  border-radius: var(--radius-xl, 16px);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}
.legal-header {
  background: linear-gradient(135deg, #0f2440, #1e3a5f);
  color: white;
  padding: 2.5rem 2rem;
  text-align: center;
}
.legal-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
}
.legal-meta {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  flex-wrap: wrap;
}
.legal-meta-item {
  font-size: 0.8125rem;
  color: rgba(255,255,255,0.7);
  background: rgba(255,255,255,0.1);
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}
.legal-body {
  padding: 2rem;
}
.legal-section {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-gray-100);
}
.legal-section:last-child {
  border-bottom: none;
}
.legal-section h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 1rem;
}
.legal-section h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}
.legal-section p {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}
.legal-section ul {
  padding-left: 1.5rem;
  margin-bottom: 0.75rem;
}
.legal-section ul li {
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
}
.legal-highlight {
  background: var(--color-warning-bg);
  border: 1px solid var(--color-warning);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: #92400e;
}
.legal-footer {
  padding: 1.5rem 2rem;
  background: var(--color-gray-50);
  display: flex;
  gap: 0.75rem;
  justify-content: center;
}

/* === 首页响应式优化 === */
@media (max-width: 768px) {
  .hero-section {
    padding: 3rem 0 2.5rem !important;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
  }
  .hero-title {
    font-size: 1.75rem !important;
    line-height: 1.35 !important;
  }
  .hero-subtitle {
    font-size: 0.9375rem !important;
    margin-bottom: 2rem !important;
  }
  .hero-primary-btn {
    width: 100%;
    justify-content: center;
    font-size: 1.1rem !important;
    padding: 1rem 2rem !important;
  }
  .hero-secondary-btn {
    display: none !important;
  }
  /* 移动端 "先问几个问题" 改为文字链接 */
  .hero-actions::after {
    content: '或 先问几个问题 →';
    display: block;
    width: 100%;
    text-align: center;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: rgba(255,255,255,0.6);
    cursor: pointer;
  }
  .hero-actions {
    flex-direction: column;
    align-items: center;
    position: relative;
  }
}
@media (min-width: 769px) {
  .hero-primary-btn {
    font-size: 1.1rem !important;
    padding: 1rem 2.5rem !important;
  }
  .hero-subtitle {
    white-space: nowrap;
  }
}

/* === 底部 Sticky CTA === */
.sticky-bottom-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: var(--bg-primary);
  border-top: 1px solid var(--color-gray-200);
  box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
  padding: 0.75rem 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.75rem;
}
.sticky-bottom-bar .btn {
  min-width: 80%;
  max-width: 500px;
}
@media (min-width: 769px) {
  .sticky-bottom-bar .btn {
    min-width: auto;
    max-width: none;
  }
}

/* === 输入框固定底部（对话和问答） === */
.chat-input-sticky {
  position: sticky;
  bottom: 0;
  z-index: 50;
  background: var(--bg-primary);
  border-top: 1px solid var(--color-gray-200);
  padding: 0.75rem;
}

/* === Picker / Tag 选择器 === */
.picker-searchable {
  position: relative;
}
.picker-searchable input {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  outline: none;
  transition: border-color 150ms;
}
.picker-searchable input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,58,95,0.1);
}
.picker-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  max-height: 240px;
  overflow-y: auto;
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  display: none;
}
.picker-dropdown.is-open {
  display: block;
}
.picker-option {
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 100ms;
}
.picker-option:hover,
.picker-option.is-highlighted {
  background: var(--color-primary-50);
}
.picker-option.is-selected {
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-weight: 600;
}
.picker-option-group {
  padding: 0.375rem 0.875rem;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-top: 1px solid var(--color-gray-100);
  background: var(--color-gray-50);
}

/* === 多选 Tag === */
.tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.tag-option {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: 9999px;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 150ms;
  background: var(--bg-primary);
  color: var(--text-secondary);
  user-select: none;
}
.tag-option:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.tag-option.is-selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  font-weight: 500;
}

/* === 按钮组（单选/多选） === */
.btn-group-select {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.btn-group-select .btn-select-item {
  flex: 1;
  min-width: 100px;
  padding: 0.625rem 0.75rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  font-size: 0.8125rem;
  text-align: center;
  cursor: pointer;
  transition: all 150ms;
  color: var(--text-secondary);
}
.btn-group-select .btn-select-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-group-select .btn-select-item.is-selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

/* === 快捷回复按钮（对话中的选择器） === */
.quick-reply-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding: 0.5rem 0;
}
.quick-reply-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-gray-300);
  border-radius: 9999px;
  background: var(--bg-primary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 150ms;
  color: var(--text-secondary);
  white-space: nowrap;
}
.quick-reply-btn:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* === 智能加载反馈 === */
.smart-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
  text-align: center;
}
.smart-loading-icon {
  font-size: 1.25rem;
  transition: opacity 300ms ease;
}
.smart-loading-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  min-height: 1.5em;
  transition: opacity 300ms ease;
}
.smart-loading-progress {
  width: 200px;
  height: 3px;
  background: var(--color-gray-200);
  border-radius: 2px;
  overflow: hidden;
}
.smart-loading-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transition: width 500ms ease;
  width: 0%;
}

/* === 风险等级色块 === */
.risk-badge-high { background: #e53e3e; color: white; }
.risk-badge-medium { background: #d69e2e; color: white; }
.risk-badge-low { background: #38a169; color: white; }
.risk-badge-critical { background: #9b2c2c; color: white; }

.risk-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 700;
}

/* === 排版优化 === */
@media (max-width: 768px) {
  body {
    font-size: 16px !important;
  }
  .body-sm {
    font-size: 0.9375rem !important;
    line-height: 1.7 !important;
  }
  .heading-1 {
    font-size: 1.75rem !important;
  }
  .heading-2 {
    font-size: 1.375rem !important;
  }
  .legal-body {
    padding: 1.25rem;
  }
  .legal-header {
    padding: 1.75rem 1.25rem;
  }
  .legal-title {
    font-size: 1.375rem;
  }
}

/* 全局段落间距 */
p {
  margin-bottom: 0.75rem;
}
.body-sm {
  line-height: 1.7;
}

/* AI 气泡宽度限制 */
.qa-bubble-ai {
  max-width: 85%;
}
.qa-bubble-ai strong {
  color: var(--color-primary);
}

/* 移动端快捷问题横向滚动 */
@media (max-width: 768px) {
  #quickQuestions {
    flex-wrap: nowrap !important;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 0.5rem;
  }
  #quickQuestions::-webkit-scrollbar {
    display: none;
  }
  .qa-quick-btn {
    flex-shrink: 0 !important;
    white-space: nowrap !important;
  }
}

/* 打印友好 */
@media print {
  .navbar, .footer, .sticky-bottom-bar, .hero-actions {
    display: none !important;
  }
  .legal-page {
    padding: 0;
    background: white;
  }
  .legal-container {
    box-shadow: none;
    border-radius: 0;
  }
  .legal-header {
    background: white !important;
    color: black !important;
  }
  .legal-meta-item {
    background: none !important;
    color: #666 !important;
  }
}

/* 诊断模式选择引导 */
.mode-guide-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
.mode-guide-card {
  background: white;
  border-radius: var(--radius-xl, 16px);
  max-width: 480px;
  width: 100%;
  padding: 2rem;
  box-shadow: var(--shadow-xl, 0 25px 50px -12px rgba(0,0,0,0.25));
}

/* ============================================
   v4.0 — 全端用户体验优化追加样式
   ============================================ */

/* === 底部 Sticky 顾问 CTA（结果页） === */
.result-sticky-cta {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: linear-gradient(135deg, #0f2440, #1e3a5f);
  color: white;
  padding: 0.875rem 1.25rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.15);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  transform: translateY(100%);
  transition: transform 0.4s ease;
}
.result-sticky-cta.is-visible {
  transform: translateY(0);
}
.result-sticky-cta-text {
  font-size: 0.875rem;
  font-weight: 500;
  opacity: 0.9;
}
.result-sticky-cta .btn {
  background: var(--color-accent);
  color: white;
  border: none;
  font-weight: 600;
  white-space: nowrap;
  padding: 0.625rem 1.5rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
}
.result-sticky-cta .btn:hover {
  background: var(--color-accent-dark);
}

/* === 问卷底部固定按钮 === */
.questionnaire-sticky-nav {
  position: sticky;
  bottom: 0;
  z-index: 50;
  background: var(--bg-primary);
  border-top: 1px solid var(--color-gray-200);
  box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
  padding: 0.875rem 1.5rem;
  margin: 0 -1.5rem -1.75rem;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}
.questionnaire-sticky-nav .btn {
  min-width: 80%;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
}
@media (min-width: 769px) {
  .questionnaire-sticky-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  .questionnaire-sticky-nav .btn {
    min-width: auto;
  }
}

/* === 智能等待文案动画 === */
.smart-wait {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 3rem 1rem;
}
.smart-wait-icon {
  font-size: 1.5rem;
  animation: smart-wait-fade 0.5s ease;
}
.smart-wait-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-align: center;
  animation: smart-wait-fade 0.5s ease;
}
.smart-wait-progress {
  width: 240px;
  height: 4px;
  background: var(--color-gray-200);
  border-radius: 2px;
  overflow: hidden;
}
.smart-wait-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: 2px;
  transition: width 800ms ease;
  width: 0%;
}
.smart-wait-retry {
  display: none;
  margin-top: 0.5rem;
}
.smart-wait-retry.is-visible {
  display: block;
}
@keyframes smart-wait-fade {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === 可搜索国家 Picker 增强 === */
.country-picker {
  position: relative;
}
.country-picker-input {
  width: 100%;
  padding: 0.625rem 0.875rem 0.625rem 2.25rem;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 150ms;
  background: var(--bg-primary);
}
.country-picker-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(30,58,95,0.1);
}
.country-picker-icon {
  position: absolute;
  left: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}
.country-picker-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 280px;
  overflow-y: auto;
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  display: none;
}
.country-picker-dropdown.is-open {
  display: block;
}
.country-picker-group-label {
  padding: 0.5rem 0.875rem;
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-100);
  position: sticky;
  top: 0;
}
.country-picker-item {
  padding: 0.5rem 0.875rem;
  font-size: 0.875rem;
  cursor: pointer;
  transition: background 100ms;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.country-picker-item:hover {
  background: var(--color-primary-50);
}
.country-picker-item.is-selected {
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-weight: 600;
}
.country-picker-empty {
  padding: 1rem;
  text-align: center;
  font-size: 0.8125rem;
  color: var(--text-tertiary);
}

/* === 多选 Tag 增强 — 问卷内嵌 === */
.q-tag-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
}
.q-tag-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.5rem 1rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: 9999px;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 150ms;
  background: var(--bg-primary);
  color: var(--text-secondary);
  user-select: none;
}
.q-tag-item:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-50);
}
.q-tag-item.is-selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  font-weight: 500;
}

/* === 金额范围按钮组 === */
.amount-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.amount-btn {
  flex: 1;
  min-width: 80px;
  padding: 0.625rem 0.5rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  font-size: 0.8125rem;
  text-align: center;
  cursor: pointer;
  transition: all 150ms;
  color: var(--text-secondary);
}
.amount-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.amount-btn.is-selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
  font-weight: 600;
}

/* === 对话中快捷选择器 === */
.chat-quick-picker {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  padding: 0.5rem 0;
  animation: fadeInUp 0.3s ease-out;
}
.chat-quick-picker .quick-chip {
  padding: 0.4rem 0.875rem;
  border: 1px solid var(--color-gray-300);
  border-radius: 9999px;
  background: var(--bg-primary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 150ms;
  color: var(--text-secondary);
  white-space: nowrap;
}
.chat-quick-picker .quick-chip:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.chat-quick-picker .quick-chip.is-selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* === 风险卡片增强 === */
.risk-point-card {
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 0.75rem;
  transition: box-shadow 150ms;
}
.risk-point-card:hover {
  box-shadow: var(--shadow-md);
}
.risk-point-card .risk-point-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.5rem;
}
.risk-point-card .risk-point-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}
.risk-point-card .risk-point-desc {
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.risk-point-expand {
  font-size: 0.8125rem;
  color: var(--color-primary);
  background: none;
  border: none;
  cursor: pointer;
  font-weight: 500;
  padding: 0.25rem 0;
  margin-top: 0.5rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}
.risk-point-expand:hover {
  text-decoration: underline;
}
.risk-point-detail {
  display: none;
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-gray-100);
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--text-secondary);
}
.risk-point-consult-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--color-danger);
  background: var(--color-danger-bg);
  border: 1px solid var(--color-danger);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.75rem;
  cursor: pointer;
  font-weight: 500;
  transition: all 150ms;
  margin-top: 0.5rem;
}
.risk-point-consult-btn:hover {
  background: var(--color-danger);
  color: white;
}

/* === 建议卡片增强 === */
.advice-card {
  display: flex;
  gap: 0.875rem;
  padding: 1rem 1.25rem;
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  margin-bottom: 0.625rem;
}
.advice-card-number {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary-50);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}
.advice-card-text {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-secondary);
  flex: 1;
}

/* === 对话气泡增强 === */
.chat-msg-bubble strong {
  color: var(--color-primary);
}

/* === 问卷表单增强 === */
.radio-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.375rem;
}
.radio-card {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  border: 1.5px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 150ms;
  font-size: 0.875rem;
  color: var(--text-secondary);
  flex: 1;
  min-width: 80px;
  justify-content: center;
}
.radio-card:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.radio-card:has(input:checked) {
  background: var(--color-primary-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 500;
}
.radio-card input[type="radio"] {
  display: none;
}

/* 条件子问题 */
.conditional-block {
  margin-top: 0.75rem;
  padding: 0.875rem;
  background: var(--color-gray-50);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--color-primary);
}
.sub-label {
  font-size: 0.8125rem !important;
  color: var(--text-secondary) !important;
}
.field-required {
  color: var(--color-danger);
  margin-right: 0.25rem;
}
.tooltip-trigger {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-tertiary);
  vertical-align: middle;
  padding: 0.125rem;
}
.tooltip-trigger:hover {
  color: var(--color-primary);
}
.tooltip-content {
  margin-top: 0.375rem;
  padding: 0.625rem 0.875rem;
  background: var(--color-info-bg);
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  line-height: 1.6;
  color: var(--color-primary);
  border: 1px solid var(--color-primary-100);
}

/* === 诊断对话 phase dots === */
.phase-dot {
  font-size: 0.65rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  background: var(--color-gray-100);
  color: var(--text-tertiary);
  transition: all 150ms;
}
.phase-dot.active {
  background: var(--color-primary-50);
  color: var(--color-primary);
  font-weight: 600;
}
.phase-dot.completed {
  background: var(--color-success-bg);
  color: var(--color-success);
}

/* === QA 快捷问题按钮 === */
.qa-quick-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-gray-200);
  border-radius: 9999px;
  background: var(--bg-primary);
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 150ms;
  color: var(--text-secondary);
  white-space: nowrap;
}
.qa-quick-btn:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* === QA CTA 卡片 === */
.qa-cta-card {
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  border: 1px solid var(--color-gray-200);
  background: var(--bg-primary);
  animation: fadeInUp 0.3s ease-out;
}
.qa-cta-stage2 {
  border-color: var(--color-primary-100);
  background: var(--color-primary-50);
}
.qa-cta-stage3 {
  border-color: var(--color-accent-100);
  background: var(--color-accent-50);
}

/* === QA 微信卡片 === */
.qa-wechat-card {
  border-top: 3px solid var(--color-accent);
}
.qa-wechat-trust {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--color-gray-100);
  font-size: 0.65rem;
  color: var(--text-tertiary);
}

/* === 结果页响应式 === */
@media (max-width: 768px) {
  .result-score-card {
    flex-direction: column;
    text-align: center;
    gap: 1.25rem;
  }
  .result-sticky-cta {
    flex-direction: column;
    gap: 0.5rem;
    padding: 0.75rem;
  }
  .result-sticky-cta .btn {
    width: 100%;
  }
  .result-action-buttons {
    flex-direction: column;
    gap: 0.5rem;
  }
  .result-action-btn {
    width: 100%;
  }
  /* 底部 padding 防止被 sticky bar 遮挡 */
  #resultApp {
    padding-bottom: 6rem !important;
  }
}

/* 桌面端结果页浮动顾问卡片 */
@media (min-width: 769px) {
  .result-sticky-cta {
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    max-width: 600px;
    margin: 0 auto;
    left: 50%;
    transform: translateX(-50%) translateY(100%);
  }
  .result-sticky-cta.is-visible {
    transform: translateX(-50%) translateY(0);
  }
}

/* === 结果页打印增强 === */
@media print {
  .result-sticky-cta,
  .questionnaire-sticky-nav {
    display: none !important;
  }
}

/* === 聊天窗口固定底部输入 === */
@media (max-width: 768px) {
  .chat-input-fixed-bottom {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: var(--bg-primary);
    border-top: 1px solid var(--color-gray-200);
    box-shadow: 0 -2px 12px rgba(0,0,0,0.08);
    padding: 0.75rem 1rem;
  }
}

/* ============================================
   v5.0 — 0404 分支 UI/UX 全面优化追加样式
   ============================================ */

/* === 首页 Hero 移动端优化 === */
@media (max-width: 768px) {
  .hero-section {
    padding: 3rem 0 2.5rem !important;
    min-height: calc(100vh - 64px) !important;
  }
  .hero-title {
    font-size: 1.75rem !important;
    line-height: 1.35 !important;
  }
  .hero-subtitle {
    font-size: 0.95rem !important;
    margin-bottom: 2rem !important;
  }
  .hero-primary-btn {
    width: 100% !important;
    max-width: 320px !important;
    font-size: 1.1rem !important;
    padding: 1.125rem 2rem !important;
    justify-content: center !important;
  }
  .hero-secondary-btn {
    width: 100% !important;
    max-width: 320px !important;
    background: transparent !important;
    border-color: rgba(255,255,255,0.25) !important;
    font-size: 0.9rem !important;
  }
  .hero-actions {
    flex-direction: column !important;
    align-items: center !important;
  }
}

/* === 桌面端 Hero 按钮微调 === */
@media (min-width: 769px) {
  .hero-primary-btn {
    min-width: 200px;
    font-size: 1.1rem !important;
    padding: 1rem 2.75rem !important;
  }
  .hero-subtitle {
    white-space: nowrap;
  }
}

/* === QA Sticky 输入栏增强 === */
.qa-input-sticky {
  box-shadow: 0 -2px 12px rgba(0,0,0,0.06);
}
@media (max-width: 768px) {
  .qa-input-sticky {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 100 !important;
    border-radius: 0 !important;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.1) !important;
  }
  /* 移动端 QA 聊天区需要 padding-bottom 避免被遮挡 */
  #qaLayout {
    padding-bottom: 8rem !important;
  }
}

/* === Diagnosis Chat Sticky 输入栏 === */
@media (max-width: 768px) {
  .chat-input-sticky {
    position: fixed !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    z-index: 100 !important;
    box-shadow: 0 -4px 16px rgba(0,0,0,0.1) !important;
  }
}

/* === FAQ 轮播 / 滚动区重设计 === */
.faq-carousel {
  display: flex;
  gap: 0.75rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 0.25rem 0 1rem;
}
.faq-carousel::-webkit-scrollbar { display: none; }
.faq-carousel-item {
  flex: 0 0 auto;
  width: 280px;
  scroll-snap-align: start;
  background: var(--bg-primary);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  cursor: pointer;
  transition: all 200ms;
}
.faq-carousel-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.faq-carousel-cat {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 0.375rem;
}
.faq-carousel-q {
  font-size: 0.8125rem;
  color: var(--text-primary);
  line-height: 1.5;
  font-weight: 500;
}

/* === 诊断模式引导增强 === */
.mode-guide-hint {
  text-align: center;
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--color-primary-50), var(--color-accent-50));
  border: 1px solid var(--color-primary-100);
}
.mode-guide-hint-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: 0.375rem;
}
.mode-guide-hint-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

/* === 全局移动端字体 ≥ 16px === */
@media (max-width: 768px) {
  body {
    font-size: 16px !important;
  }
  .body-sm {
    font-size: 0.9375rem !important;
    line-height: 1.7 !important;
  }
  .body-base {
    font-size: 1rem !important;
    line-height: 1.8 !important;
  }
  p {
    margin-bottom: 0.875rem !important;
    line-height: 1.7 !important;
  }
  .heading-3 {
    font-size: 1.25rem !important;
  }
  .heading-4 {
    font-size: 1.1rem !important;
  }
}

/* === 桌面端字体 14-16px === */
@media (min-width: 769px) {
  body {
    font-size: 15px;
  }
  .body-sm {
    line-height: 1.7;
  }
  p {
    line-height: 1.7;
    margin-bottom: 0.75rem;
  }
}

/* === 全局段落间距 ≥ 12px === */
.legal-body p,
.qa-bubble-ai p,
.chat-msg-bubble p,
.result-advice-text,
.result-risk-why,
.result-risk-trigger,
.risk-point-detail p {
  margin-bottom: 0.75rem;
  line-height: 1.75;
}

/* === AI 气泡全局宽度限制 ≤ 85% === */
.qa-bubble-ai,
.chat-msg-bubble {
  max-width: 85%;
}

/* === 风险等级色卡 === */
.risk-badge-high {
  background: #fef2f2 !important;
  color: #e53e3e !important;
  border: 1px solid #fca5a5;
}
.risk-badge-medium {
  background: #fffbeb !important;
  color: #d69e2e !important;
  border: 1px solid #fde68a;
}
.risk-badge-low {
  background: #ecfdf5 !important;
  color: #38a169 !important;
  border: 1px solid #6ee7b7;
}
.risk-badge-critical {
  background: #fef2f2 !important;
  color: #991b1b !important;
  border: 1px solid #ef4444;
  font-weight: 700;
}

/* === 对话快捷选择 Chips 增强 — 聊天气泡下方 === */
.chat-quick-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: 0.5rem;
  padding: 0 0 0 2.75rem; /* align with bubble start */
}
.chat-quick-chips .chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  border: 1px solid var(--color-gray-300);
  background: var(--bg-primary);
  font-size: 0.78rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 150ms;
  white-space: nowrap;
}
.chat-quick-chips .chip:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--color-primary-50);
}
.chat-quick-chips .chip.selected {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* === 可搜索 Picker 下拉优化（移动端） === */
@media (max-width: 768px) {
  .country-picker-dropdown {
    position: fixed !important;
    top: auto !important;
    bottom: 0 !important;
    left: 0 !important;
    right: 0 !important;
    max-height: 60vh !important;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0 !important;
    box-shadow: 0 -8px 30px rgba(0,0,0,0.2) !important;
  }
}

/* === 打印增强 === */
@media print {
  .result-sticky-cta,
  .qa-input-sticky,
  .chat-input-sticky,
  .questionnaire-sticky-nav,
  #resultStickyBar {
    display: none !important;
  }
  .risk-point-detail {
    display: block !important;
  }
}