/* ===================================================================
   【风格 04 · 紫穹保险库】放心云 FANGXIN CLOUD - 原生全局样式表
   配色：深紫夜 #17112A | 唯一强调色鸢尾紫 #A78BFA | 辅以品红 #E879C8 | 冷白 #F8FAFC
   字体：Noto Sans SC 900 (回退苹方/雅黑) | 数字 Space Grotesk
=================================================================== */

/* 原生系统字体栈优先，免除外部字体加载阻塞与网络依赖 */

:root {
  --bg-vault: #17112A;
  --bg-card: rgba(28, 21, 51, 0.82);
  --bg-card-hover: rgba(38, 29, 69, 0.95);
  --bg-glass: rgba(23, 17, 42, 0.88);
  --border-vault: rgba(167, 139, 250, 0.16);
  --border-glow: rgba(167, 139, 250, 0.45);
  --primary: #A78BFA; /* 唯一强调色：鸢尾紫 */
  --primary-hover: #9065f8;
  --primary-glow: rgba(167, 139, 250, 0.5);
  --magenta: #E879C8; /* 辅以少量品红 */
  --magenta-glow: rgba(232, 121, 200, 0.4);
  --gradient-vault: linear-gradient(135deg, #A78BFA 0%, #C084FC 50%, #E879C8 100%);
  --gradient-card: linear-gradient(180deg, rgba(34, 25, 62, 0.85) 0%, rgba(23, 17, 42, 0.92) 100%);
  --text-main: #F8FAFC; /* 冷白正文 */
  --text-muted: #A5B4FC; /* 紫调浅灰 */
  --text-dim: #6B7280;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 9999px;
  --container-width: 1200px;
  --font-title: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-body: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-num: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* 全局重置与基础设定 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-vault);
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-vault);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-normal);
}

ul, ol {
  list-style: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.num-font {
  font-family: var(--font-num);
}

/* 按钮通用组件 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-weight: 700;
  border-radius: var(--radius-full);
  padding: 13px 30px;
  font-size: 1rem;
  transition: all var(--transition-normal);
  cursor: pointer;
  white-space: nowrap;
  border: 1px solid transparent;
  min-height: 48px;
  text-align: center;
  font-family: var(--font-title);
}

.btn-primary {
  background: var(--gradient-vault);
  color: #17112A;
  font-weight: 800;
  box-shadow: 0 4px 24px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 36px rgba(167, 139, 250, 0.7);
  filter: brightness(1.08);
}

.btn-outline {
  background: rgba(167, 139, 250, 0.06);
  color: var(--text-main);
  border-color: var(--border-vault);
  backdrop-filter: blur(12px);
}

.btn-outline:hover {
  background: rgba(167, 139, 250, 0.14);
  border-color: var(--primary);
  transform: translateY(-2px);
  color: #FFFFFF;
}

.btn-sm {
  padding: 10px 22px;
  font-size: 0.875rem;
  min-height: 44px;
  min-width: 44px;
}

.btn-block {
  width: 100%;
}

/* 头部导航栏 */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-vault);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: -0.5px;
  font-family: var(--font-title);
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background: var(--gradient-vault);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 18px var(--primary-glow);
}

.logo-text {
  background: linear-gradient(135deg, #FFFFFF 40%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: 900;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--magenta);
  font-weight: 700;
  margin-left: 2px;
  letter-spacing: 0.8px;
  font-family: var(--font-num);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
}

.nav-link:hover {
  color: #FFFFFF;
}

.nav-link.active-link {
  color: var(--primary);
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 独立子页面容器通用样式 */
.subpage-container {
  max-width: 900px;
  margin: 40px auto 80px;
  padding: 48px;
  background: var(--bg-card);
  border: 1px solid var(--border-vault);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  box-shadow: 0 12px 48px rgba(15, 10, 30, 0.5);
}

.subpage-header {
  margin-bottom: 40px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border-vault);
}

.subpage-title {
  font-size: 2.2rem;
  font-weight: 900;
  color: #FFFFFF;
  margin-bottom: 12px;
  font-family: var(--font-title);
}

.subpage-update {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.subpage-content h2 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #FFFFFF;
  margin: 36px 0 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-title);
}

.subpage-content h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 20px;
  background: var(--primary);
  border-radius: 2px;
  box-shadow: 0 0 8px var(--primary);
}

.subpage-content p {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.subpage-content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 20px;
  color: var(--text-muted);
}

.subpage-content li {
  margin-bottom: 10px;
  line-height: 1.7;
}

.subpage-highlight {
  background: rgba(167, 139, 250, 0.08);
  border-left: 4px solid var(--primary);
  padding: 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
  color: #EDE9FE;
}

.back-home {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.back-home:hover {
  text-decoration: underline;
  color: #FFFFFF;
}

/* 页脚 Footer */
.footer {
  border-top: 1px solid var(--border-vault);
  background: #110B20;
  padding: 50px 0 36px;
}

.footer-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 48px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.footer-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: #DDD6FE;
  position: relative;
  padding-bottom: 4px;
}

.footer-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.2s ease;
}

.footer-link:hover {
  color: #FFFFFF;
}

.footer-link:hover::after {
  width: 100%;
}

.footer-bottom {
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-dim);
  padding-top: 24px;
  border-top: 1px solid rgba(167, 139, 250, 0.08);
}

/* ===================================================================
   无障碍 (Accessibility) 与现代交互增强规范
=================================================================== */

/* 跳过导航快速到达主体内容的键盘入口 */
.skip-link {
  position: absolute;
  top: -120px;
  left: 20px;
  background: var(--primary);
  color: #17112A;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 0.95rem;
  z-index: 999999;
  text-decoration: none;
  box-shadow: 0 4px 18px rgba(167, 139, 250, 0.6);
  transition: top 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.skip-link:focus,
.skip-link:focus-visible {
  top: 20px;
  outline: 3px solid #FFFFFF;
  outline-offset: 2px;
}

/* 清晰可见的键盘焦点环 */
a:focus-visible,
button:focus-visible,
summary:focus-visible,
input:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 3px;
}

/* 锚点导航偏移防止粘性页眉遮挡标题 */
[id] {
  scroll-margin-top: 85px;
}

/* 长文本与表格防布局溢出保护 */
p, h1, h2, h3, h4, span, a, td, th {
  overflow-wrap: break-word;
  word-break: break-word;
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* 尊重减弱动态效果设置 (Prefers-Reduced-Motion) */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}