```css
:root {
  --brand: #ff4d6d;
  --brand-light: #ff7b8f;
  --brand-dark: #d93a54;
  --brand-glow: rgba(255, 77, 109, 0.35);
  --accent: #6c5ce7;
  --accent-light: #a29bfe;
  --accent-glow: rgba(108, 92, 231, 0.3);
  --success: #00b894;
  --success-light: #55efc4;
  --warn: #fdcb6e;
  --dark: #1a1a2e;
  --dark-2: #16213e;
  --dark-3: #0f3460;
  --text: #2d3436;
  --text-secondary: #636e72;
  --text-muted: #b2bec3;
  --bg: #fafafa;
  --bg-alt: #f0f0f5;
  --card: #ffffff;
  --card-hover: #fefefe;
  --border: #e8e8ef;
  --border-light: #f0f0f5;
  --glass: rgba(255, 255, 255, 0.72);
  --glass-border: rgba(255, 255, 255, 0.35);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.1);
  --shadow-brand: 0 8px 30px rgba(255, 77, 109, 0.25);
  --shadow-accent: 0 8px 30px rgba(108, 92, 231, 0.25);
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --gradient-brand: linear-gradient(135deg, #ff4d6d 0%, #ff7b8f 50%, #ff9a8b 100%);
  --gradient-accent: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #81ecec 100%);
  --gradient-success: linear-gradient(135deg, #00b894 0%, #55efc4 100%);
  --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --gradient-hero: linear-gradient(160deg, #fff5f7 0%, #fafafa 40%, #f0f0f5 100%);
}

[data-theme="dark"] {
  --brand: #ff6b8a;
  --brand-light: #ff8fa3;
  --brand-dark: #e0455f;
  --brand-glow: rgba(255, 107, 138, 0.4);
  --accent: #8b7cf7;
  --accent-light: #b8adff;
  --accent-glow: rgba(139, 124, 247, 0.35);
  --success: #00d4a8;
  --success-light: #6effde;
  --text: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6c6c88;
  --bg: #0a0a16;
  --bg-alt: #12122a;
  --card: #1a1a32;
  --card-hover: #1f1f3a;
  --border: #2a2a48;
  --border-light: #222240;
  --glass: rgba(26, 26, 50, 0.78);
  --glass-border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
  --shadow-brand: 0 8px 30px rgba(255, 107, 138, 0.3);
  --shadow-accent: 0 8px 30px rgba(139, 124, 247, 0.3);
  --gradient-hero: linear-gradient(160deg, #12122a 0%, #0a0a16 40%, #0a0a16 100%);
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

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

ul, ol {
  list-style: none;
}

/* ========== 滚动条 ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ========== 视觉隐藏 ========== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ========== 顶部栏 ========== */
.top-bar {
  background: var(--gradient-dark);
  color: rgba(255, 255, 255, 0.85);
  font-size: 13px;
  padding: 8px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  letter-spacing: 0.3px;
  position: relative;
  z-index: 100;
}

.top-bar span {
  display: flex;
  align-items: center;
  gap: 6px;
}

.top-bar span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

/* ========== 导航 ========== */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  background: var(--glass);
  border-bottom: 1px solid var(--glass-border);
  transition: var(--transition);
}

#site-header nav {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  text-decoration: none;
  flex-shrink: 0;
  letter-spacing: -0.5px;
}

.logo:hover {
  color: var(--brand);
  transform: scale(1.02);
}

.logo svg {
  border-radius: 10px;
  box-shadow: var(--shadow-brand);
  transition: var(--transition);
}

.logo:hover svg {
  transform: rotate(-6deg) scale(1.08);
  box-shadow: 0 12px 36px var(--brand-glow);
}

#site-header nav > ul {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 8px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

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

#site-header nav > ul li a {
  display: block;
  padding: 6px 12px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: var(--transition);
}

#site-header nav > ul li a:hover {
  color: var(--brand);
  background: rgba(255, 77, 109, 0.08);
  transform: translateY(-1px);
}

#site-header nav form {
  display: flex;
  align-items: center;
  margin-left: auto;
  gap: 8px;
  flex-shrink: 0;
}

#site-header nav form input {
  width: 180px;
  padding: 8px 14px;
  border: 1.5px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-size: 13px;
  font-family: var(--font);
  outline: none;
  transition: var(--transition);
}

#site-header nav form input:focus {
  width: 220px;
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-glow);
}

#site-header nav form input::placeholder {
  color: var(--text-muted);
}

#site-header nav form button {
  padding: 8px 18px;
  border: none;
  border-radius: 999px;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 13px;
  font-weight: 600;
  font-family: var(--font);
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-brand);
  white-space: nowrap;
}

#site-header nav form button:hover {
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 12px 36px var(--brand-glow);
}

#site-header nav form button:active {
  transform: translateY(0) scale(0.98);
}

#theme-toggle,
#menu-toggle {
  width: 40px;
  height: 40px;
  border: 1.5px solid var(--border);
  border-radius: 50%;
  background: var(--card);
  color: var(--text);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}

#theme-toggle:hover,
#menu-toggle:hover {
  border-color: var(--brand);
  background: var(--brand);
  color: #fff;
  transform: rotate(15deg) scale(1.08);
  box-shadow: var(--shadow-brand);
}

#menu-toggle {
  display: none;
}

/* ========== 主容器 ========== */
main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ========== Hero ========== */
#hero {
  padding: 64px 0 48px;
  position: relative;
}

#hero::before {
  content: "";
  position: absolute;
  top: -80px;
  left: -10%;
  width: 120%;
  height: 500px;
  background: var(--gradient-hero);
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.6;
  z-index: -1;
  pointer-events: none;
}

#hero h1 {
  font-size: clamp(28px, 5vw, 48px);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -1px;
  margin-bottom: 24px;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: fade-in-up 0.8s ease both;
}

@keyframes fade-in-up {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#hero > p {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 860px;
  margin-bottom: 16px;
  animation: fade-in-up 0.8s ease 0.1s both;
}

#hero > p:last-of-type {
  margin-bottom: 40px;
  animation-delay: 0.2s;
}

/* ========== Banner 轮播 ========== */
.banner-carousel {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
  animation: fade-in-up 0.8s ease 0.3s both;
  background: var(--card);
}

.banner-slide {
  display: none;
  animation: slide-fade 0.6s ease;
}

.banner-slide.active {
  display: block;
}

@keyframes slide-fade {
  from {
    opacity: 0;
    transform: scale(1.03);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.banner-slide svg {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s ease;
}

.banner-carousel:hover .banner-slide.active svg {
  transform: scale(1.02);
}

/* ========== Hero 数据 ========== */
.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  animation: fade-in-up 0.8s ease 0.4s both;
}

.hero-stats li {
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 24px 20px;
  text-align: center;
  font-size: 14px;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.hero-stats li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--gradient-brand);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.hero-stats li:hover::before {
  transform: scaleX(1);
}

.hero-stats li:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-brand);
  border-color: var(--brand);
}

.hero-stats li strong {
  display: block;
  font-size: clamp(26px, 3.5vw, 36px);
  font-weight: 900;
  color: var(--brand);
  line-height: 1.2;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

/* ========== 面包屑 ========== */
nav[aria-label="面包屑导航"] {
  padding: 16px 0;
}

nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-muted);
}

nav[aria-label="面包屑导航"] ol li:not(:last-child)::after {
  content: "›";
  margin-left: 8px;
  color: var(--text-muted);
  font-weight: 700;
}

nav[aria-label="面包屑导航"] ol li a {
  color: var(--text-secondary);
  font-weight: 500;
}

nav[aria-label="面包屑导航"] ol li a:hover {
  color: var(--brand);
}

/* ========== 锚点导航 ========== */
.anchor-nav {
  padding: 16px 0;
  margin-bottom: 24px;
  position: sticky;
  top: 64px;
  z-index: 50;
  background: var(--glass);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
  transition: var(--transition);
}

.anchor-nav ul {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  overflow-x: auto;
  scrollbar-width: none;
  flex-wrap: nowrap;
}

.anchor-nav ul::-webkit-scrollbar {
  display: none;
}

.anchor-nav ul li a {
  display: block;
  padding: 6px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: 999px;
  white-space: nowrap;
  transition: var(--transition);
  border: 1px solid transparent;
}

.anchor-nav ul li a:hover {
  color: var(--brand);
  background: rgba(255, 77, 109, 0.08);
  border-color: rgba(255, 77, 109, 0.2);
  transform: translateY(-2px);
}

/* ========== Section 通用 ========== */
section {
  padding: 48px 0;
  animation: fade-in-up 0.7s ease both;
}

section h2 {
  font-size: clamp(22px, 3.5vw, 32px);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
  color: var(--text);
  position: relative;
  padding-left: 20px;
}

section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 70%;
  border-radius: 3px;
  background: var(--gradient-brand);
  box-shadow: 0 0 16px var(--brand-glow);
}

section h3 {
  font-size: clamp(18px, 2.5vw, 22px);
  font-weight: 700;
  letter-spacing: -0.3px;
  margin: 32px 0 16px;
  color: var(--text);
  position: relative;
  display: inline-block;
}

section h3::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--brand), transparent);
  opacity: 0.4;
}

section h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 24px 0 12px;
  color: var(--text);
}

section p {
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

section ul,
section ol {
  margin-bottom: 16px;
}

section ul li,
section ol li {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.85;
  padding-left: 24px;
  position: relative;
  margin-bottom: 6px;
}

section ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 12px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brand);
  opacity: 0.5;
  transition: var(--transition);
}

section ul li:hover::before {
  opacity: 1;
  transform: scale(1.4);
  box-shadow: 0 0 12px var(--brand-glow);
}

/* ========== 卡片效果 ========== */
#about,
#history,
#culture,
#products,
#advantages,
#solutions,
#applications,
#cases,
#reviews,
#news,
#articles,
#knowledge,
#faq,
#howto,
#contact,
#sitemap,
#links,
#legal,
#footer-info {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  margin-bottom: 32px;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
}

#about::before,
#products::before,
#cases::before,
#faq::before,
#howto::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: opacity 0.4s ease;
}

#about:hover::before,
#products:hover::before,
#cases:hover::before,
#faq:hover::before,
#howto:hover::before {
  opacity: 1;
}

#about:hover,
#history:hover,
#culture:hover,
#products:hover,
#advantages:hover,
#solutions:hover,
#applications:hover,
#cases:hover,
#reviews:hover,
#news:hover,
#articles:hover,
#knowledge:hover,
#faq:hover,
#howto:hover,
#contact:hover,
#sitemap:hover,
#links:hover,
#legal:hover,
#footer-info:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: var(--brand);
}

/* ========== 引用块 ========== */
blockquote {
  background: var(--bg-alt);
  border-left: 4px solid var(--brand);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 20px 24px;
  margin: 16px 0;
  transition: var(--transition);
  position: relative;
}

blockquote::before {
  content: "\201C";
  position: absolute;
  top: 8px;
  left: 16px;
  font-size: 48px;
  line-height: 1;
  color: var(--brand);
  opacity: 0.15;
  font-family: Georgia, serif;
  pointer-events: none;
}

blockquote:hover {
  background: var(--card-hover);
  border-left-color: var(--accent);
  transform: translateX(6px);
  box-shadow: var(--shadow);
}

blockquote p {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: 0;
  position: relative;
  z-index: 1;
}

/* ========== 文章卡片 ========== */
#articles article {
  background: var(--bg-alt);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 16px;
  border: 1px solid var(--border-light);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

#articles article::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-brand);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.4s ease;
}

#articles article:hover::after {
  transform: scaleY(1);
}

#articles article:hover {
  background: var(--card);
  border-color: var(--brand);
  transform: translateX(8px);
  box-shadow: var(--shadow);
}

#articles article h3 {
  margin-top: 0;
  font-size: 17px;
  color: var(--text);
}

#articles article h3::after {
  display: none;
}

#articles article p {
  font-size: 14px;
  margin-bottom: 8px;
}

#articles article p:first-of-type {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 500;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 14px;
  font-weight: 600;
  color: var(--brand);
  padding: 6px 0;
  transition: var(--transition);
}

#articles article a::after {
  content: "→";
  transition: transform 0.3s ease;
}

#articles article a:hover {
  color: var(--brand-dark);
  gap: 8px;
}

#articles article a:hover::after {
  transform: translateX(4px);
}

/* ========== FAQ ========== */
#faq details {
  background: var(--bg-alt);
  border-radius: var(--radius);
  margin-bottom: 12px;
  border: 1px solid var(--border-light);
  overflow: hidden;
  transition: var(--transition);
}

#faq details[open] {
  background: var(--card);
  border-color: var(--brand);
  box-shadow: var(--shadow);
}

#faq details:hover {
  border-color: var(--brand);
}

#faq summary {
  padding: 18px 24px;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: var(--transition);
  position: relative;
}

#faq summary::-webkit-details-marker {
  display: none;
}

#faq summary::before {
  content: "+";
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  flex-shrink: 0;
  transition: var(--transition);
  box-shadow: var(--shadow-brand);
}

#faq details[open] summary::before {
  content: "−";
  transform: rotate(180deg);
  background: var(--gradient-accent);
  box-shadow: var(--shadow-accent);
}

#faq summary:hover {
  color: var(--brand);
  padding-left: 28px;
}

#faq details p {
  padding: 0 24px 20px 60px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--text-secondary);
  animation: fade-in-up 0.4s ease;
}

/* ========== HowTo ========== */
#howto h3 {
  color: var(--accent);
}

#howto h4 {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

#howto h4::before {
  content: "";
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 12px var(--accent-glow);
  flex-shrink: 0;
}

#howto ul li::before {
  background: var(--accent);
}

#howto ul li:hover::before {
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ========== 新闻中心 ========== */
#news h3 {
  color: var(--text);
}

#news h3 + p {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 8px;
}

#news > p {
  font-size: 15px;
  padding-bottom: 20px;
  border-bottom: 1px dashed var(--border);
  margin-bottom: 20px;
}

#news > p:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

/* ========== 联系信息 ========== */
#contact ul li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

#contact ul li::before {
  background: var(--success);
  box-shadow: 0 0 10px var(--success);
}

#contact h3 {
  color: var(--success);
}

#contact h3::after {
  background: linear-gradient(90deg, var(--success), transparent);
}

/* ========== 网站地图 & 友情链接 ========== */
#sitemap ul,
#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
}

#sitemap ul li,
#links ul li {
  padding-left: 0;
  margin-bottom: 0;
}

#sitemap ul li::before,
#links ul li::before {
  display: none;
}

#sitemap ul li a,
#links ul li a {
  display: block;
  padding: 10px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

#sitemap ul li a:hover,
#links ul li a:hover {
  background: var(--brand);
  color: #fff;
  border-color: var(--brand);
  transform: translateY(-3px);
  box-shadow: var(--shadow-brand);
}

#links ul li a[rel~="nofollow"]:hover {
  background: var(--accent);
  border-color: var(--accent);
  box-shadow: var(--shadow-accent);
}

/* ========== 法律声明 ========== */
#legal h3 {
  color: var(--warn);
}

#legal h3::after {
  background: linear-gradient(90deg, var(--warn), transparent);
}

#legal p {
  font-size: 14.5px;
  padding: 16px 20px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--warn);
  margin-bottom: 12px;
}

/* ========== 页面信息 ========== */
#footer-info ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 10px;
}

#footer-info ul li {
  padding: 10px 16px;
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

#footer-info ul li::before {
  display: none;
}

/* ========== 页脚 ========== */
footer {
  background: var(--gradient-dark);
  color: rgba(255, 255, 255, 0.7);
  text-align: center;
  padding: 40px 24px;
  margin-top: 40px;
  font-size: 13.5px;
  line-height: 2;
  position: relative;
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-brand);
}

footer p {
  margin-bottom: 4px;
  position: relative;
  z-index: 1;
}

footer p:first-child {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
}

/* ========== 返回顶部 ========== */
#back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-brand);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: var(--transition);
  z-index: 999;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.1);
  box-shadow: 0 12px 40px var(--brand-glow);
}

#back-to-top:active {
  transform: translateY(-2px) scale(0.95);
}

/* ========== 滚动动画（Intersection Observer 配合） ========== */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  #site-header nav > ul {
    display: none;
  }

  #menu-toggle {
    display: flex;
  }

  #site-header nav form input {
    width: 140px;
  }

  #site-header nav form input:focus {
    width: 170px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  #about,
  #history,
  #culture,
  #products,
  #advantages,
  #solutions,
  #applications,
  #cases,
  #reviews,
  #news,
  #articles,
  #knowledge,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links,
  #legal,
  #footer-info {
    padding: 32px 24px;
  }
}

@media (max-width: 768px) {
  .top-bar {
    font-size: 11px;
    padding: 6px 16px;
    flex-direction: column;
    gap: 2px;
    text-align: center;
  }

  .top-bar span::before {
    width: 5px;
    height: 5px;
  }

  #site-header nav {
    padding: 0 16px;
    height: 56px;
    gap: 10px;
  }

  .logo {
    font-size: 18px;
    gap: 8px;
  }

  .logo svg {
    width: 30px;
    height: 30px;
  }

  #site-header nav form {
    display: none;
  }

  main {
    padding: 0 16px;
  }

  #hero {
    padding: 40px 0 32px;
  }

  #hero h1 {
    letter-spacing: -0.5px;
    margin-bottom: 16px;
  }

  #hero > p {
    font-size: 14.5px;
  }

  .banner-carousel {
    border-radius: var(--radius);
    margin-bottom: 28px;
  }

  .hero-stats {
    gap: 12px;
  }

  .hero-stats li {
    padding: 18px 12px;
    font-size: 12.5px;
  }

  .hero-stats li strong {
    font-size: 24px;
  }

  .anchor-nav {
    top: 56px;
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
  }

  .anchor-nav ul {
    padding: 10px 12px;
    gap: 4px;
  }

  .anchor-nav ul li a {
    padding: 5px 10px;
    font-size: 12px;
  }

  section {
    padding: 32px 0;
  }

  section h2 {
    padding-left: 16px;
    margin-bottom: 18px;
  }

  section h2::before {
    width: 4px;
  }

  #about,
  #history,
  #culture,
  #products,
  #advantages,
  #solutions,
  #applications,
  #cases,
  #reviews,
  #news,
  #articles,
  #knowledge,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links,
  #legal,
  #footer-info {
    padding: 24px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
  }

  #articles article {
    padding: 18px 20px;
  }

  #faq summary {
    padding: 14px 18px;
    font-size: 14.5px;
  }

  #faq summary::before {
    width: 20px;
    height: 20px;
    font-size: 14px;
  }

  #faq details p {
    padding: 0 18px 16px 50px;
    font-size: 13.5px;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
  }

  #sitemap ul li a,
  #links ul li a {
    padding: 8px 12px;
    font-size: 13px;
  }

  #footer-info ul {
    grid-template-columns: 1fr;
  }

  footer {
    padding: 28px 16px;
    font-size: 12px;
    line-height: 1.9;
  }

  #back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
  }

  .hero-stats li {
    padding: 14px 10px;
  }

  .hero-stats li strong {
    font-size: 22px;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: 1fr;
  }

  blockquote {
    padding: 16px 18px;
  }

  blockquote::before {
    font-size: 36px;
    top: 4px;
    left: 10px;
  }
}

/* ========== 打印样式 ========== */
@media print {
  #site-header,
  .anchor-nav,
  #back-to-top,
  .banner-carousel,
  footer {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  section {
    page-break-inside: avoid;
    box-shadow: none;
    border: 1px solid #ddd;
  }

  a {
    color: #000;
    text-decoration: underline;
  }
}

/* ========== 减少动画偏好 ========== */
@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* ========== 高对比度模式 ========== */
@media (prefers-contrast: high) {
  :root {
    --border: #000;
    --text-secondary: #000;
  }

  [data-theme="dark"] {
    --border: #fff;
    --text-secondary: #fff;
  }
}

/* ========== 深色模式系统偏好（无 JS 时） ========== */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --brand: #ff6b8a;
    --brand-light: #ff8fa3;
    --brand-dark: #e0455f;
    --brand-glow: rgba(255, 107, 138, 0.4);
    --accent: #8b7cf7;
    --accent-light: #b8adff;
    --accent-glow: rgba(139, 124, 247, 0.35);
    --success: #00d4a8;
    --success-light: #6effde;
    --text: #e8e8f0;
    --text-secondary: #a0a0b8;
    --text-muted: #6c6c88;
    --bg: #0a0a16;
    --bg-alt: #12122a;
    --card: #1a1a32;
    --card-hover: #1f1f3a;
    --border: #2a2a48;
    --border-light: #222240;
    --glass: rgba(26, 26, 50, 0.78);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-brand: 0 8px 30px rgba(255, 107, 138, 0.3);
    --shadow-accent: 0 8px 30px rgba(139, 124, 247, 0.3);
    --gradient-hero: linear-gradient(160deg, #12122a 0%, #0a0a16 40%, #0a0a16 100%);
  }
}

/* ========== 选择文字样式 ========== */
::selection {
  background: var(--brand);
  color: #fff;
}

::-moz-selection {
  background: var(--brand);
  color: #fff;
}

/* ========== 焦点可见性 ========== */
:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 4px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}

/* ========== 加载骨架屏 ========== */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.skeleton {
  background: linear-gradient(90deg, var(--bg-alt) 25%, var(--border-light) 50%, var(--bg-alt) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-sm);
}

/* ========== 浮动装饰动画 ========== */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 20px var(--brand-glow); }
  50% { box-shadow: 0 0 40px var(--brand-glow), 0 0 60px var(--brand-glow); }
}

/* ========== 平滑滚动偏移（锚点定位避免被 sticky 遮挡） ========== */
section[id],
#hero {
  scroll-margin-top: 80px;
}

@media (max-width: 768px) {
  section[id],
  #hero {
    scroll-margin-top: 72px;
  }
}
```