/* ==========================================================================
   红薯影视 - 官方样式表 (style.css)
   网站: centray.net
   风格: 现代渐变 + 毛玻璃 + 圆角卡片
   作者: 红薯影视内容团队
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. 设计令牌 / CSS 变量
   -------------------------------------------------------------------------- */
:root {
  /* 品牌色 */
  --color-primary: #E63946;
  --color-primary-dark: #C42B38;
  --color-primary-light: #FF6B75;
  --color-secondary: #F77F00;
  --color-accent: #FCBF49;

  /* 渐变 */
  --gradient-brand: linear-gradient(135deg, #E63946 0%, #F77F00 55%, #FCBF49 100%);
  --gradient-hero: linear-gradient(135deg, #1A1A2E 0%, #3D1E2B 40%, #E63946 100%);
  --gradient-soft: linear-gradient(135deg, rgba(230, 57, 70, 0.08) 0%, rgba(247, 127, 0, 0.08) 100%);
  --gradient-card: linear-gradient(160deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.65) 100%);

  /* 中性色 - 亮色模式 */
  --bg-body: #FBF7F4;
  --bg-surface: #FFFFFF;
  --bg-elevated: #FFFFFF;
  --bg-muted: #F3EDE9;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.9);
  --text-primary: #1E1B1A;
  --text-secondary: #4A4442;
  --text-muted: #857B77;
  --text-inverse: #FFFFFF;
  --border-color: rgba(30, 27, 26, 0.10);
  --border-strong: rgba(30, 27, 26, 0.18);

  /* 阴影 */
  --shadow-xs: 0 1px 2px rgba(30, 27, 26, 0.06);
  --shadow-sm: 0 2px 8px rgba(30, 27, 26, 0.08);
  --shadow-md: 0 8px 24px rgba(30, 27, 26, 0.10);
  --shadow-lg: 0 16px 48px rgba(30, 27, 26, 0.14);
  --shadow-brand: 0 10px 30px rgba(230, 57, 70, 0.28);

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  /* 间距 */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;

  /* 布局 */
  --max-width: 1200px;
  --header-height: 68px;

  /* 过渡 */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.18s var(--ease-out);
  --transition-base: 0.32s var(--ease-out);
  --transition-slow: 0.6s var(--ease-out);

  /* 字体 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, "Noto Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

/* --------------------------------------------------------------------------
   2. 暗色模式
   -------------------------------------------------------------------------- */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #121013;
    --bg-surface: #1B181C;
    --bg-elevated: #242028;
    --bg-muted: #2A252C;
    --bg-glass: rgba(36, 32, 40, 0.72);
    --bg-glass-border: rgba(255, 255, 255, 0.10);
    --gradient-card: linear-gradient(160deg, rgba(36,32,40,0.92) 0%, rgba(27,24,28,0.72) 100%);
    --gradient-soft: linear-gradient(135deg, rgba(230, 57, 70, 0.14) 0%, rgba(247, 127, 0, 0.10) 100%);
    --text-primary: #F5F1EE;
    --text-secondary: #C9C1BD;
    --text-muted: #948C89;
    --border-color: rgba(255, 255, 255, 0.10);
    --border-strong: rgba(255, 255, 255, 0.18);
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.45);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-brand: 0 10px 30px rgba(230, 57, 70, 0.4);
  }
}

/* 手动暗色模式切换支持 */
html[data-theme="dark"] {
  --bg-body: #121013;
  --bg-surface: #1B181C;
  --bg-elevated: #242028;
  --bg-muted: #2A252C;
  --bg-glass: rgba(36, 32, 40, 0.72);
  --bg-glass-border: rgba(255, 255, 255, 0.10);
  --gradient-card: linear-gradient(160deg, rgba(36,32,40,0.92) 0%, rgba(27,24,28,0.72) 100%);
  --gradient-soft: linear-gradient(135deg, rgba(230, 57, 70, 0.14) 0%, rgba(247, 127, 0, 0.10) 100%);
  --text-primary: #F5F1EE;
  --text-secondary: #C9C1BD;
  --text-muted: #948C89;
  --border-color: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.18);
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-brand: 0 10px 30px rgba(230, 57, 70, 0.4);
}

html[data-theme="light"] {
  color-scheme: light;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 24px);
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background-color: var(--bg-body);
  background-image:
    radial-gradient(circle at 12% 8%, rgba(230, 57, 70, 0.10) 0%, transparent 42%),
    radial-gradient(circle at 88% 4%, rgba(247, 127, 0, 0.10) 0%, transparent 40%),
    radial-gradient(circle at 50% 100%, rgba(252, 191, 73, 0.08) 0%, transparent 55%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  min-height: 100vh;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

ul,
ol {
  list-style: none;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

::selection {
  background: rgba(230, 57, 70, 0.22);
  color: var(--text-primary);
}

/* 滚动条美化 */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
  border-radius: var(--radius-pill);
  border: 2px solid var(--bg-body);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--color-primary-dark), var(--color-primary));
}

/* --------------------------------------------------------------------------
   4. 头部导航 (毛玻璃 + 渐变)
   -------------------------------------------------------------------------- */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  width: 100%;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(180%);
  backdrop-filter: blur(18px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

header::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-brand);
  opacity: 0.06;
  pointer-events: none;
}

header nav {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-5);
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  flex-wrap: wrap;
}

/* Logo 链接 */
header nav > a:first-child {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: var(--text-primary);
  padding: var(--space-2) 0;
  white-space: nowrap;
  position: relative;
  transition: transform var(--transition-fast);
}

header nav > a:first-child::before {
  content: "";
  width: 34px;
  height: 34px;
  border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
  background: var(--gradient-brand);
  box-shadow: var(--shadow-brand);
  flex-shrink: 0;
  transition: transform var(--transition-base) var(--ease-spring);
}

header nav > a:first-child::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: var(--gradient-soft);
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-base);
}

header nav > a:first-child:hover {
  transform: translateY(-1px);
}

header nav > a:first-child:hover::before {
  transform: rotate(-12deg) scale(1.08);
}

header nav > a:first-child:hover::after {
  opacity: 1;
}

/* 导航列表 */
header nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  flex-wrap: wrap;
}

header nav ul li a {
  display: inline-block;
  position: relative;
  padding: 10px 14px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

header nav ul li a::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 4px;
  width: 0;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: var(--radius-pill);
  transform: translateX(-50%);
  transition: width var(--transition-base) var(--ease-out);
}

header nav ul li a:hover {
  color: var(--color-primary);
  background: rgba(230, 57, 70, 0.08);
  transform: translateY(-2px);
}

header nav ul li a:hover::after {
  width: 42%;
}

/* --------------------------------------------------------------------------
   5. 主内容区
   -------------------------------------------------------------------------- */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-6) var(--space-5) var(--space-9);
  display: block;
}

/* H1 渐变 Banner */
main > h1 {
  position: relative;
  margin: var(--space-5) 0 var(--space-5);
  padding: clamp(2.5rem, 6vw, 4.5rem) clamp(1.5rem, 5vw, 3.5rem);
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  line-height: 1.28;
  font-weight: 800;
  letter-spacing: 0.01em;
  color: #FFFFFF;
  text-align: center;
  border-radius: var(--radius-xl);
  background: var(--gradient-hero);
  box-shadow: var(--shadow-lg), var(--shadow-brand);
  overflow: hidden;
  isolation: isolate;
  animation: heroFadeIn 0.9s var(--ease-out) both;
}

main > h1::before {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at 25% 30%, rgba(252, 191, 73, 0.45) 0%, transparent 45%),
    radial-gradient(circle at 78% 70%, rgba(230, 57, 70, 0.55) 0%, transparent 50%);
  z-index: -1;
  animation: heroGlow 12s ease-in-out infinite alternate;
}

main > h1::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, #000 0%, transparent 78%);
  pointer-events: none;
  z-index: -1;
}

/* H1 后的引导段落 */
main > h1 + p {
  max-width: 880px;
  margin: 0 auto var(--space-7);
  padding: var(--space-5) var(--space-6);
  font-size: clamp(0.98rem, 1.6vw, 1.1rem);
  line-height: 1.9;
  color: var(--text-secondary);
  text-align: center;
  background: var(--gradient-card);
  -webkit-backdrop-filter: blur(14px) saturate(160%);
  backdrop-filter: blur(14px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  animation: heroFadeIn 1s var(--ease-out) 0.15s both;
}

/* --------------------------------------------------------------------------
   6. Section 通用样式 (圆角卡片 + 毛玻璃)
   -------------------------------------------------------------------------- */
main > section {
  position: relative;
  margin-bottom: var(--space-6);
  padding: clamp(1.5rem, 4vw, 2.75rem);
  background: var(--gradient-card);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  backdrop-filter: blur(16px) saturate(170%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
  /* 滚动动画初始状态 */
  opacity: 0;
  transform: translateY(28px);
  animation: sectionReveal 0.75s var(--ease-out) forwards;
}

/* 逐个延迟实现滚动浮现效果 */
main > section:nth-of-type(1) { animation-delay: 0.05s; }
main > section:nth-of-type(2) { animation-delay: 0.10s; }
main > section:nth-of-type(3) { animation-delay: 0.15s; }
main > section:nth-of-type(4) { animation-delay: 0.20s; }
main > section:nth-of-type(5) { animation-delay: 0.25s; }
main > section:nth-of-type(6) { animation-delay: 0.30s; }
main > section:nth-of-type(7) { animation-delay: 0.35s; }
main > section:nth-of-type(8) { animation-delay: 0.40s; }
main > section:nth-of-type(9) { animation-delay: 0.45s; }
main > section:nth-of-type(10) { animation-delay: 0.50s; }
main > section:nth-of-type(n+11) { animation-delay: 0.55s; }

main > section:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
  transform: translateY(-3px);
}

/* Section 顶部渐变装饰条 */
main > section::before {
  content: "";
  position: absolute;
  top: 0;
  left: clamp(1.5rem, 4vw, 2.75rem);
  right: clamp(1.5rem, 4vw, 2.75rem);
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  opacity: 0.85;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--transition-slow) var(--ease-out);
}

main > section:hover::before {
  transform: scaleX(1);
}

/* --------------------------------------------------------------------------
   7. 标题层级
   -------------------------------------------------------------------------- */
main h2 {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-5);
  padding-left: var(--space-4);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--text-primary);
}

main h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 68%;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  box-shadow: var(--shadow-brand);
}

main h2::after {
  content: "";
  display: block;
  width: 100%;
  min-width: 60px;
  height: 2px;
  margin-top: var(--space-2);
  border-radius: var(--radius-pill);
  background: linear-gradient(90deg, var(--color-primary), transparent);
  opacity: 0.5;
}

main h3 {
  position: relative;
  margin: var(--space-5) 0 var(--space-3);
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  font-weight: 700;
  line-height: 1.45;
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

main h3::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 10px;
  border-radius: 50%;
  background: var(--gradient-brand);
  box-shadow: 0 0 0 4px rgba(230, 57, 70, 0.14);
  vertical-align: middle;
  transition: transform var(--transition-base) var(--ease-spring), box-shadow var(--transition-base);
}

main h3:hover::before {
  transform: scale(1.35);
  box-shadow: 0 0 0 7px rgba(230, 57, 70, 0.18);
}

main h4 {
  position: relative;
  margin: var(--space-4) 0 var(--space-2);
  padding-left: var(--space-4);
  font-size: clamp(1rem, 1.9vw, 1.15rem);
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1.5;
}

main h4::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--gradient-brand);
}

/* --------------------------------------------------------------------------
   8. 正文段落与文本
   -------------------------------------------------------------------------- */
main p {
  margin-bottom: var(--space-4);
  font-size: clamp(0.95rem, 1.5vw, 1.02rem);
  line-height: 1.95;
  color: var(--text-secondary);
  letter-spacing: 0.005em;
}

main p:last-child {
  margin-bottom: 0;
}

main p strong,
main p b {
  color: var(--text-primary);
  font-weight: 700;
}

main p a {
  position: relative;
  font-weight: 600;
  color: var(--color-primary);
  background-image: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  background-repeat: no-repeat;
  background-position: 0 100%;
  background-size: 0% 2px;
  transition: background-size var(--transition-base) var(--ease-out), color var(--transition-fast);
}

main p a:hover {
  color: var(--color-primary-dark);
  background-size: 100% 2px;
}

/* --------------------------------------------------------------------------
   9. 列表样式 (网站地图 / 友情链接)
   -------------------------------------------------------------------------- */
main ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

main ul li {
  position: relative;
}

main ul li a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 12px 16px;
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-fast), box-shadow var(--transition-base),
              color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

main ul li a::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gradient-brand);
  flex-shrink: 0;
  transition: transform var(--transition-base) var(--ease-spring);
}

main ul li a:hover {
  color: var(--color-primary);
  border-color: rgba(230, 57, 70, 0.4);
  background: var(--gradient-soft);
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-md);
}

main ul li a:hover::before {
  transform: scale(1.5);
}

/* 面包屑导航 */
#breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-muted);
  border-radius: var(--radius-pill);
  font-size: 0.9rem;
}

#breadcrumb ol li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--text-muted);
}

#breadcrumb ol li:not(:last-child)::after {
  content: "›";
  color: var(--color-primary);
  font-weight: 700;
  opacity: 0.7;
}

#breadcrumb ol li a {
  display: inline;
  padding: 0;
  color: var(--text-secondary);
  background: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
  font-weight: 500;
}

#breadcrumb ol li a::before {
  display: none;
}

#breadcrumb ol li a:hover {
  color: var(--color-primary);
  background: none;
  transform: none;
  box-shadow: none;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --------------------------------------------------------------------------
   10. 文章卡片 (新闻中心 / 技术文章)
   -------------------------------------------------------------------------- */
main article {
  position: relative;
  margin-bottom: var(--space-4);
  padding: var(--space-5) var(--space-5) var(--space-5) calc(var(--space-5) + 6px);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  transition: transform var(--transition-base) var(--ease-out),
              box-shadow var(--transition-base) var(--ease-out),
              border-color var(--transition-base);
}

main article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--gradient-brand);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform var(--transition-slow) var(--ease-out);
}

main article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(230, 57, 70, 0.3);
}

main article:hover::before {
  transform: scaleY(1);
}

main article h3 {
  margin-top: 0;
  margin-bottom: var(--space-2);
  font-size: clamp(1.02rem, 2vw, 1.2rem);
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

main article:hover h3 {
  color: var(--color-primary);
}

/* 文章内时间 */
main article h3 + p {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  padding: 4px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--gradient-soft);
  border-radius: var(--radius-pill);
  letter-spacing: 0.02em;
}

main article h3 + p::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gradient-brand);
  animation: pulseDot 2s ease-in-out infinite;
}

main article p {
  font-size: 0.96rem;
  line-height: 1.85;
}

main article p a {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 600;
  color: #FFFFFF;
  background: var(--gradient-brand);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-brand);
  background-size: 100% 100%;
  transition: transform var(--transition-fast), box-shadow var(--transition-base), filter var(--transition-fast);
}

main article p a::after {
  content: "→";
  transition: transform var(--transition-base) var(--ease-spring);
}

main article p a:hover {
  color: #FFFFFF;
  transform: translateY(-2px);
  box-shadow: 0 14px 34px rgba(230, 57, 70, 0.4);
  filter: brightness(1.06);
}

main article p a:hover::after {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   11. 客户评价 (引用块)
   -------------------------------------------------------------------------- */
#testimonials blockquote {
  position: relative;
  margin-bottom: var(--space-4);
  padding: var(--space-5) var(--space-5) var(--space-5) calc(var(--space-6) + 8px);
  background: var(--gradient-card);
  -webkit-backdrop-filter: blur(12px) saturate(160%);
  backdrop-filter: blur(12px) saturate(160%);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xs);
  transition: transform var(--transition-base) var(--ease-out), box-shadow var(--transition-base);
}

#testimonials blockquote::before {
  content: "\201C";
  position: absolute;
  left: var(--space-4);
  top: 6px;
  font-size: 4rem;
  line-height: 1;
  font-family: Georgia, "Times New Roman", serif;
  color: var(--color-primary);
  opacity: 0.28;
  pointer-events: none;
}

#testimonials blockquote::after {
  content: "";
  position: absolute;
  left: 0;
  top: var(--space-4);
  bottom: var(--space-4);
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
  opacity: 0.6;
}

#testimonials blockquote:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-md);
}

#testimonials blockquote p {
  margin-bottom: var(--space-3);
  font-size: 0.98rem;
  line-height: 1.9;
  color: var(--text-secondary);
  font-style: italic;
}

#testimonials blockquote cite {
  display: inline-block;
  font-size: 0.86rem;
  font-weight: 600;
  font-style: normal;
  color: var(--color-primary);
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   12. FAQ 手风琴视觉优化
   -------------------------------------------------------------------------- */
#faq h3 {
  padding: var(--space-3) var(--space-4);
  margin: var(--space-4) 0 var(--space-2);
  background: var(--bg-muted);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: clamp(1rem, 1.9vw, 1.12rem);
  transition: background var(--transition-base), transform var(--transition-fast), border-color var(--transition-base);
}

#faq h3::before {
  width: 7px;
  height: 7px;
  margin-right: 8px;
}

#faq h3:hover {
  background: var(--gradient-soft);
  transform: translateX(4px);
  border-left-color: var(--color-secondary);
}

#faq h3 + p {
  padding: var(--space-3) var(--space-4) var(--space-4);
  margin-bottom: var(--space-4);
  font-size: 0.94rem;
  line-height: 1.9;
  color: var(--text-secondary);
  border-bottom: 1px dashed var(--border-color);
}

/* --------------------------------------------------------------------------
   13. HowTo 教程区块
   -------------------------------------------------------------------------- */
#howto h4 {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 16px;
  margin: var(--space-5) 0 var(--space-3);
  font-size: 0.95rem;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--gradient-brand);
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-brand);
  transition: transform var(--transition-fast), box-shadow var(--transition-base);
}

#howto h4::before {
  display: none;
}

#howto h4:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 12px 28px rgba(230, 57, 70, 0.38);
}

#howto p {
  padding-left: var(--space-3);
  border-left: 2px solid var(--border-color);
  transition: border-color var(--transition-base), padding-left var(--transition-base);
}

#howto p:hover {
  border-left-color: var(--color-primary);
  padding-left: var(--space-4);
}

/* --------------------------------------------------------------------------
   14. 联系信息 / 资质区块
   -------------------------------------------------------------------------- */
#contact p,
#qualification p,
#editor p,
#security p,
#team p,
#copyright p,
#privacy p,
#disclaimer p {
  font-size: 0.96rem;
  line-height: 1.95;
}

#contact h3 {
  margin-top: var(--space-5);
}

/* 底部版权提示 */
footer > p:last-child {
  max-width: var(--max-width);
  margin: var(--space-5) auto 0;
  padding: var(--space-4) var(--space-5);
  text-align: center;
  font-size: 0.88rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   15. 页脚
   -------------------------------------------------------------------------- */
footer {
  position: relative;
  margin-top: var(--space-8);
  padding: var(--space-8) var(--space-5) var(--space-6);
  background: var(--gradient-hero);
  color: rgba(255, 255, 255, 0.86);
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(252, 191, 73, 0.22) 0%, transparent 42%),
    radial-gradient(circle at 85% 80%, rgba(230, 57, 70, 0.30) 0%, transparent 48%);
  pointer-events: none;
}

footer > section {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto var(--space-6);
  padding: var(--space-5) var(--space-6);
  background: rgba(255, 255, 255, 0.06);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-lg);
  transition: background var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

footer > section:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.22);
  transform: translateY(-3px);
}

footer h2 {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-4);
  padding-left: var(--space-4);
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  font-weight: 700;
  color: #FFFFFF;
}

footer h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  border-radius: var(--radius-pill);
  background: var(--gradient-brand);
}

footer h2::after {
  display: none;
}

footer p {
  margin-bottom: var(--space-3);
  font-size: 0.92rem;
  line-height: 1.9;
  color: rgba(255, 255, 255, 0.78);
}

footer a {
  color: var(--color-accent);
  font-weight: 600;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

footer a:hover {
  color: #FFFFFF;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* --------------------------------------------------------------------------
   16. 动画关键帧
   -------------------------------------------------------------------------- */
@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes heroGlow {
  0% {
    transform: scale(1) rotate(0deg);
    opacity: 0.85;
  }
  50% {
    transform: scale(1.12) rotate(6deg);
    opacity: 1;
  }
  100% {
    transform: scale(1.05) rotate(-5deg);
    opacity: 0.9;
  }
}

@keyframes sectionReveal {
  from {
    opacity: 0;
    transform: translateY(28px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseDot {
  0%, 100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.5);
    opacity: 0.6;
  }
}

@keyframes floatSoft {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

/* --------------------------------------------------------------------------
   17. 响应式布局 - 平板
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  :root {
    --header-height: 62px;
  }

  header nav {
    padding: 0 var(--space-4);
    gap: var(--space-3);
  }

  header nav ul li a {
    padding: 8px 11px;
    font-size: 0.88rem;
  }

  main {
    padding: var(--space-5) var(--space-4) var(--space-8);
  }

  main > section {
    padding: var(--space-5);
  }

  main ul {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  }
}

/* --------------------------------------------------------------------------
   18. 响应式布局 - 手机
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --header-height: auto;
  }

  body {
    font-size: 15px;
  }

  header nav {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-3) var(--space-4);
    gap: var(--space-2);
  }

  header nav > a:first-child {
    font-size: 1.2rem;
  }

  header nav ul {
    width: 100%;
    gap: 4px;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  header nav ul::-webkit-scrollbar {
    display: none;
  }

  header nav ul li {
    flex-shrink: 0;
  }

  header nav ul li a {
    padding: 7px 13px;
    font-size: 0.84rem;
  }

  main {
    padding: var(--space-4) var(--space-3) var(--space-7);
  }

  main > h1 {
    margin-top: var(--space-3);
    padding: var(--space-6) var(--space-4);
    border-radius: var(--radius-lg);
    font-size: clamp(1.4rem, 7vw, 1.9rem);
  }

  main > h1 + p {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    text-align: left;
    font-size: 0.94rem;
  }

  main > section {
    padding: var(--space-4);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
  }

  main > section::before {
    left: var(--space-4);
    right: var(--space-4);
  }

  main h2 {
    font-size: 1.25rem;
    margin-bottom: var(--space-4);
  }

  main h3 {
    font-size: 1.05rem;
  }

  main h4 {
    font-size: 0.98rem;
  }

  main p {
    font-size: 0.94rem;
    line-height: 1.85;
  }

  main ul {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2);
  }

  main ul li a {
    padding: 10px 12px;
    font-size: 0.86rem;
  }

  main article {
    padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--space-4) + 6px);
  }

  #testimonials blockquote {
    padding: var(--space-4) var(--space-4) var(--space-4) calc(var(--space-5) + 6px);
  }

  #testimonials blockquote::before {
    font-size: 3rem;
    left: var(--space-3);
  }

  footer {
    padding: var(--space-6) var(--space-3) var(--space-5);
  }

  footer > section {
    padding: var(--space-4);
    border-radius: var(--radius-md);
  }

  #breadcrumb ol {
    font-size: 0.82rem;
    padding: var(--space-2) var(--space-3);
  }
}

/* --------------------------------------------------------------------------
   19. 响应式布局 - 小屏手机
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  main ul {
    grid-template-columns: 1fr;
  }

  main > h1 {
    padding: var(--space-5) var(--space-3);
    font-size: 1.35rem;
  }

  main > section {
    padding: var(--space-3) var(--space-3) var(--space-4);
  }

  main h2 {
    font-size: 1.15rem;
    padding-left: var(--space-3);
  }

  #howto h4 {
    font-size: 0.88rem;
    padding: 5px 13px;
  }

  #faq h3 {
    padding: var(--space-2) var(--space-3);
    font-size: 0.96rem;
  }

  main article p a {
    width: 100%;
    justify-content: center;
  }
}

/* --------------------------------------------------------------------------
   20. 无障碍与动效偏好
   -------------------------------------------------------------------------- */
@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;
  }

  main > section {
    opacity: 1;
    transform: none;
  }

  main > h1::before {
    animation: none;
  }
}

/* 高对比度模式适配 */
@media (prefers-contrast: high) {
  :root {
    --border-color: rgba(30, 27, 26, 0.4);
    --border-strong: rgba(30, 27, 26, 0.6);
  }

  main > section,
  main article,
  #testimonials blockquote {
    border-width: 2px;
  }
}

/* 打印样式 */
@media print {
  header,
  footer,
  main > h1::before,
  main > h1::after {
    display: none;
  }

  body {
    background: #FFFFFF;
    color: #000000;
  }

  main > section {
    box-shadow: none;
    border: 1px solid #CCCCCC;
    break-inside: avoid;
    opacity: 1;
    transform: none;
    animation: none;
  }

  a {
    color: #000000;
    text-decoration: underline;
  }
}