:root {
  --bg-primary: #0d0d1a;
  --bg-secondary: #14142b;
  --bg-card: rgba(26, 26, 46, 0.72);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-hover: rgba(255, 255, 255, 0.1);
  --text-primary: #f0f0f5;
  --text-secondary: #a8a8c0;
  --text-muted: #6e6e8a;
  --accent-1: #e94560;
  --accent-2: #f5a623;
  --accent-3: #7b68ee;
  --accent-4: #00d2ff;
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 30%, #0f3460 60%, #533483 100%);
  --gradient-accent: linear-gradient(135deg, #e94560 0%, #f5a623 100%);
  --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(233, 69, 96, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(233, 69, 96, 0.15);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  --max-width: 1200px;
  --header-height: 72px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f5f5fa;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.82);
    --bg-glass: rgba(0, 0, 0, 0.04);
    --bg-glass-hover: rgba(0, 0, 0, 0.07);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a8;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(233, 69, 96, 0.35);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 40px rgba(233, 69, 96, 0.1);
    --gradient-hero: linear-gradient(135deg, #e8e8f4 0%, #d4d4ec 30%, #c8d6f0 60%, #e0d4f4 100%);
    --gradient-card: linear-gradient(145deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.5) 100%);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color var(--transition-smooth), color var(--transition-smooth);
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse 80% 60% at 10% 20%, rgba(233, 69, 96, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 90% 80%, rgba(123, 104, 238, 0.08) 0%, transparent 60%),
    radial-gradient(ellipse 50% 40% at 50% 50%, rgba(0, 210, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

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

a {
  color: var(--accent-1);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

a:hover {
  color: var(--accent-2);
}

ul, ol {
  list-style: none;
}

::selection {
  background: rgba(233, 69, 96, 0.3);
  color: var(--text-primary);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

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

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

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-1);
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(13, 13, 26, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-smooth), box-shadow var(--transition-smooth);
}

@media (prefers-color-scheme: light) {
  header {
    background: rgba(245, 245, 250, 0.8);
  }
}

header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 16px;
}

header nav > a:first-child {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
  flex-shrink: 0;
  position: relative;
}

header nav > a:first-child::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 1px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-smooth);
}

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

header nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}

header nav ul li a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
}

header nav ul li a:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

header nav ul li a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 1px;
  transition: all var(--transition-smooth);
  transform: translateX(-50%);
}

header nav ul li a:hover::after {
  width: 60%;
}

main {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

main > nav[aria-label="面包屑导航"] {
  padding: 20px 0 8px;
}

main > nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

main > nav[aria-label="面包屑导航"] ol li {
  display: flex;
  align-items: center;
  gap: 8px;
}

main > nav[aria-label="面包屑导航"] ol li + li::before {
  content: '/';
  color: var(--text-muted);
  opacity: 0.5;
}

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

main > nav[aria-label="面包屑导航"] ol li a:hover {
  color: var(--accent-1);
}

main > nav[aria-label="面包屑导航"] ol li:last-child {
  color: var(--text-primary);
  font-weight: 500;
}

section {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

section h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.3;
  margin-bottom: 24px;
  position: relative;
  padding-left: 20px;
}

section h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 70%;
  background: var(--gradient-accent);
  border-radius: 2px;
}

section h3 {
  font-size: clamp(1.1rem, 2vw, 1.35rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 12px;
  margin-top: 28px;
  color: var(--text-primary);
}

section h3:first-of-type {
  margin-top: 0;
}

section p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin-bottom: 14px;
}

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

#hero {
  position: relative;
  margin-bottom: 64px;
  padding: 64px 40px;
  border-radius: var(--radius-xl);
  background: var(--gradient-hero);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  isolation: isolate;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(233, 69, 96, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(123, 104, 238, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 50% 100%, rgba(0, 210, 255, 0.1) 0%, transparent 50%);
  z-index: -1;
}

#hero::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.03), transparent);
  transform: rotate(25deg);
  animation: heroShine 8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes heroShine {
  0%, 100% { transform: rotate(25deg) translateX(-100%); opacity: 0; }
  50% { transform: rotate(25deg) translateX(100%); opacity: 1; }
}

#hero h1 {
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.2;
  margin-bottom: 20px;
  color: #ffffff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  position: relative;
  z-index: 1;
}

#hero p {
  font-size: clamp(0.9375rem, 1.8vw, 1.0625rem);
  color: rgba(255, 255, 255, 0.82);
  line-height: 1.9;
  max-width: 780px;
  position: relative;
  z-index: 1;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.2);
}

#about,
#products,
#advantages,
#solutions,
#cases,
#testimonials,
#news,
#articles,
#howto,
#faq,
#contact,
#sitemap,
#links,
#privacy,
#disclaimer,
#copyright {
  padding: 40px 36px;
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-smooth), border-color var(--transition-smooth), transform var(--transition-smooth);
}

#about:hover,
#products:hover,
#advantages:hover,
#solutions:hover,
#cases:hover,
#testimonials:hover,
#news:hover,
#articles:hover,
#howto:hover,
#faq:hover,
#contact:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

#products {
  position: relative;
  overflow: hidden;
}

#products::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

#advantages {
  position: relative;
  overflow: hidden;
}

#advantages::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, #7b68ee 0%, #00d2ff 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

#solutions {
  position: relative;
  overflow: hidden;
}

#solutions::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, #f5a623 0%, #e94560 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

#cases {
  position: relative;
  overflow: hidden;
}

#cases::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, #00d2ff 0%, #7b68ee 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

#testimonials {
  position: relative;
  overflow: hidden;
}

#testimonials::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, #e94560 0%, #7b68ee 100%);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

#testimonials blockquote {
  position: relative;
  padding: 24px 28px 24px 48px;
  margin-bottom: 16px;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-1);
  transition: all var(--transition-smooth);
}

#testimonials blockquote:hover {
  background: var(--bg-glass-hover);
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

#testimonials blockquote::before {
  content: '"';
  position: absolute;
  left: 16px;
  top: 8px;
  font-size: 3rem;
  font-weight: 900;
  color: var(--accent-1);
  opacity: 0.3;
  line-height: 1;
  font-family: Georgia, serif;
}

#testimonials blockquote p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.85;
  font-style: italic;
  margin: 0;
}

#news article {
  padding: 24px 28px;
  margin-bottom: 16px;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

#news article:last-child {
  margin-bottom: 0;
}

#news article::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-smooth);
}

#news article:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

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

#news article h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  margin-top: 0;
  transition: color var(--transition-fast);
}

#news article:hover h3 {
  color: var(--accent-1);
}

#news article time {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding: 2px 10px;
  background: var(--bg-glass);
  border-radius: 20px;
  font-weight: 500;
}

#news article p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

#articles article {
  padding: 24px 28px;
  margin-bottom: 16px;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-smooth);
  position: relative;
}

#articles article:last-child {
  margin-bottom: 0;
}

#articles article::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: var(--radius-md);
  background: var(--gradient-card);
  opacity: 0;
  transition: opacity var(--transition-smooth);
  pointer-events: none;
}

#articles article:hover {
  border-color: var(--border-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

#articles article:hover::after {
  opacity: 1;
}

#articles article h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  margin-top: 0;
  position: relative;
  z-index: 1;
  transition: color var(--transition-fast);
}

#articles article:hover h3 {
  color: var(--accent-1);
}

#articles article time {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding: 2px 10px;
  background: var(--bg-glass);
  border-radius: 20px;
  font-weight: 500;
  position: relative;
  z-index: 1;
}

#articles article p {
  font-size: 0.9rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--accent-1);
  position: relative;
  z-index: 1;
  transition: all var(--transition-fast);
}

#articles article a::after {
  content: '→';
  transition: transform var(--transition-fast);
}

#articles article a:hover {
  color: var(--accent-2);
  gap: 10px;
}

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

#howto ol {
  counter-reset: howto-counter;
  padding-left: 0;
}

#howto ol li {
  counter-increment: howto-counter;
  position: relative;
  padding: 16px 20px 16px 64px;
  margin-bottom: 12px;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.75;
  transition: all var(--transition-smooth);
}

#howto ol li::before {
  content: counter(howto-counter);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 50%;
  box-shadow: 0 2px 12px rgba(233, 69, 96, 0.3);
  transition: all var(--transition-smooth);
}

#howto ol li:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

#howto ol li:hover::before {
  transform: translateY(-50%) scale(1.1);
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.5);
}

#howto ol li:last-child {
  margin-bottom: 0;
}

#faq details {
  margin-bottom: 12px;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  overflow: hidden;
  transition: all var(--transition-smooth);
}

#faq details:last-child {
  margin-bottom: 0;
}

#faq details:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

#faq details[open] {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

#faq details summary {
  padding: 18px 24px;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color var(--transition-fast);
  user-select: none;
  position: relative;
}

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

#faq details summary::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--accent-1);
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--bg-glass);
  transition: all var(--transition-smooth);
  line-height: 1;
}

#faq details[open] summary::after {
  content: '−';
  background: var(--gradient-accent);
  color: #fff;
  transform: rotate(180deg);
}

#faq details summary:hover {
  color: var(--accent-1);
}

#faq details p {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.85;
  margin: 0;
  animation: fadeInDown 0.3s ease-out;
}

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

#contact p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
  padding-left: 0;
}

#contact h3 {
  margin-top: 28px;
}

#contact h3:first-of-type {
  margin-top: 0;
}

#sitemap ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 8px;
}

#sitemap ul li a {
  display: block;
  padding: 10px 16px;
  font-size: 0.875rem;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
}

#sitemap ul li a:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateX(4px);
}

#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

#links ul li a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border-radius: 50px;
  border: 1px solid var(--border-color);
  transition: all var(--transition-smooth);
}

#links ul li a::before {
  content: '🔗';
  font-size: 0.75rem;
  opacity: 0.6;
}

#links ul li a:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

#privacy,
#disclaimer {
  font-size: 0.9rem;
}

#privacy p,
#disclaimer p {
  font-size: 0.9rem;
  line-height: 1.9;
}

#copyright {
  text-align: center;
  background: var(--bg-glass);
}

#copyright p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

#copyright p:last-child {
  margin-bottom: 0;
}

footer {
  position: relative;
  z-index: 1;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 40px 24px;
  text-align: center;
  transition: background var(--transition-smooth);
}

footer p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 6px;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
}

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

footer p:first-child {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.js-scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

.js-scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.js-scroll-reveal:nth-child(2) { transition-delay: 0.08s; }
.js-scroll-reveal:nth-child(3) { transition-delay: 0.16s; }
.js-scroll-reveal:nth-child(4) { transition-delay: 0.24s; }
.js-scroll-reveal:nth-child(5) { transition-delay: 0.32s; }

@media (max-width: 1024px) {
  :root {
    --max-width: 100%;
  }

  main {
    padding: 0 20px 60px;
  }

  #hero {
    padding: 48px 32px;
  }

  #about,
  #products,
  #advantages,
  #solutions,
  #cases,
  #testimonials,
  #news,
  #articles,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links,
  #privacy,
  #disclaimer,
  #copyright {
    padding: 32px 28px;
  }
}

@media (max-width: 768px) {
  html {
    font-size: 15px;
  }

  :root {
    --header-height: 64px;
  }

  header nav {
    padding: 0 16px;
    flex-wrap: wrap;
    height: auto;
    padding-top: 12px;
    padding-bottom: 12px;
    gap: 8px;
  }

  header nav > a:first-child {
    font-size: 1.1rem;
  }

  header nav ul {
    width: 100%;
    justify-content: flex-start;
    gap: 2px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
  }

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

  header nav ul li a {
    padding: 6px 10px;
    font-size: 0.8rem;
  }

  main {
    padding: 0 16px 48px;
  }

  main > nav[aria-label="面包屑导航"] {
    padding: 16px 0 4px;
  }

  section {
    margin-bottom: 40px;
  }

  section h2 {
    font-size: 1.35rem;
    padding-left: 16px;
    margin-bottom: 18px;
  }

  section h3 {
    font-size: 1.05rem;
    margin-top: 22px;
  }

  #hero {
    padding: 36px 24px;
    border-radius: var(--radius-lg);
    margin-bottom: 40px;
  }

  #hero h1 {
    font-size: 1.5rem;
  }

  #hero p {
    font-size: 0.9rem;
    line-height: 1.8;
  }

  #about,
  #products,
  #advantages,
  #solutions,
  #cases,
  #testimonials,
  #news,
  #articles,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links,
  #privacy,
  #disclaimer,
  #copyright {
    padding: 24px 20px;
    border-radius: var(--radius-md);
  }

  #testimonials blockquote {
    padding: 20px 20px 20px 40px;
  }

  #testimonials blockquote::before {
    left: 12px;
    font-size: 2.5rem;
  }

  #news article,
  #articles article {
    padding: 20px 20px;
  }

  #howto ol li {
    padding: 14px 16px 14px 56px;
  }

  #howto ol li::before {
    left: 12px;
    width: 28px;
    height: 28px;
    font-size: 0.8rem;
  }

  #faq details summary {
    padding: 16px 18px;
    font-size: 0.9rem;
  }

  #faq details p {
    padding: 0 18px 18px;
    font-size: 0.875rem;
  }

  #sitemap ul {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 6px;
  }

  #sitemap ul li a {
    padding: 8px 12px;
    font-size: 0.8125rem;
  }

  #links ul {
    gap: 8px;
  }

  #links ul li a {
    padding: 8px 16px;
    font-size: 0.8125rem;
  }

  footer {
    padding: 32px 16px;
  }

  footer p {
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  html {
    font-size: 14px;
  }

  #hero {
    padding: 28px 20px;
  }

  #hero h1 {
    font-size: 1.3rem;
  }

  #hero p {
    font-size: 0.85rem;
  }

  #about,
  #products,
  #advantages,
  #solutions,
  #cases,
  #testimonials,
  #news,
  #articles,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links,
  #privacy,
  #disclaimer,
  #copyright {
    padding: 20px 16px;
  }

  section h2 {
    font-size: 1.2rem;
  }

  section h3 {
    font-size: 1rem;
  }

  #news article,
  #articles article {
    padding: 16px 16px;
  }

  #howto ol li {
    padding: 12px 14px 12px 48px;
    font-size: 0.875rem;
  }

  #howto ol li::before {
    left: 10px;
    width: 24px;
    height: 24px;
    font-size: 0.75rem;
  }

  #faq details summary {
    padding: 14px 16px;
    font-size: 0.875rem;
  }

  #faq details p {
    padding: 0 16px 16px;
    font-size: 0.85rem;
  }

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

  #links ul {
    flex-direction: column;
  }

  #links ul li a {
    width: 100%;
    justify-content: center;
  }
}

@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;
  }

  .js-scroll-reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  header,
  footer,
  #hero::after,
  body::before {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
  }

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

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