:root {
  --color-bg: #f4f6fb;
  --color-bg-alt: #ffffff;
  --color-surface: rgba(255, 255, 255, 0.72);
  --color-surface-solid: #ffffff;
  --color-border: rgba(26, 35, 50, 0.1);
  --color-text: #1a2332;
  --color-text-soft: #4a5568;
  --color-text-muted: #718096;
  --color-primary: #3b5bdb;
  --color-primary-light: #5c7cfa;
  --color-primary-dark: #2b4acb;
  --color-accent: #7048e8;
  --color-accent-light: #9775fa;
  --color-highlight: #ff6b6b;
  --color-gold: #f59f00;
  --gradient-hero: linear-gradient(135deg, #1a2332 0%, #2b4acb 45%, #7048e8 100%);
  --gradient-card: linear-gradient(135deg, rgba(59, 91, 219, 0.08), rgba(112, 72, 232, 0.08));
  --gradient-accent: linear-gradient(90deg, #3b5bdb, #7048e8);
  --gradient-btn: linear-gradient(135deg, #3b5bdb, #7048e8);
  --shadow-sm: 0 2px 8px rgba(26, 35, 50, 0.06);
  --shadow-md: 0 8px 24px rgba(26, 35, 50, 0.1);
  --shadow-lg: 0 16px 48px rgba(26, 35, 50, 0.14);
  --shadow-glow: 0 8px 32px rgba(59, 91, 219, 0.24);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-full: 999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", "Songti SC", "SimSun", serif;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  --max-width: 1200px;
  --header-height: 68px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0d1117;
    --color-bg-alt: #161b22;
    --color-surface: rgba(22, 27, 34, 0.78);
    --color-surface-solid: #161b22;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-text: #e6edf3;
    --color-text-soft: #b1bac4;
    --color-text-muted: #8b949e;
    --color-primary: #5c7cfa;
    --color-primary-light: #7c93ff;
    --color-primary-dark: #4263eb;
    --color-accent: #9775fa;
    --color-accent-light: #b197fc;
    --gradient-hero: linear-gradient(135deg, #0d1117 0%, #1c2a5e 45%, #3b2a7a 100%);
    --gradient-card: linear-gradient(135deg, rgba(92, 124, 250, 0.1), rgba(151, 117, 250, 0.1));
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.6);
    --shadow-glow: 0 8px 32px rgba(92, 124, 250, 0.3);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 15% 10%, rgba(59, 91, 219, 0.08), transparent 45%),
    radial-gradient(circle at 85% 30%, rgba(112, 72, 232, 0.08), transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(92, 124, 250, 0.06), transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(59, 91, 219, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(59, 91, 219, 0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: 4px;
}

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

ul,
ol {
  list-style: none;
}

::selection {
  background: rgba(59, 91, 219, 0.25);
  color: var(--color-text);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

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

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

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

header::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

header:hover::after {
  transform: scaleX(1);
}

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

header nav > a {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  position: relative;
  transition: transform var(--transition-fast);
}

header nav > a:hover {
  transform: scale(1.04);
}

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

header nav ul li a {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-soft);
  border-radius: var(--radius-full);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

header nav ul li a::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-full);
  background: var(--gradient-card);
  opacity: 0;
  transform: scale(0.85);
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  z-index: -1;
}

header nav ul li a:hover {
  color: var(--color-primary);
  transform: translateY(-1px);
}

header nav ul li a:hover::before {
  opacity: 1;
  transform: scale(1);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px 64px;
  position: relative;
  z-index: 1;
}

section {
  margin-bottom: 32px;
  padding: 36px 32px;
  background: var(--color-surface);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

section:hover {
  box-shadow: var(--shadow-md);
}

section:hover::before {
  opacity: 1;
}

#hero {
  background: var(--gradient-hero);
  border: none;
  color: #ffffff;
  padding: 64px 40px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(151, 117, 250, 0.35), transparent 70%);
  border-radius: 50%;
  animation: floatOrb 12s ease-in-out infinite;
  opacity: 0.8;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -40%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(92, 124, 250, 0.3), transparent 70%);
  border-radius: 50%;
  animation: floatOrb 15s ease-in-out infinite reverse;
  opacity: 0.7;
}

@keyframes floatOrb {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  33% {
    transform: translate(30px, -30px) scale(1.08);
  }
  66% {
    transform: translate(-20px, 20px) scale(0.95);
  }
}

#hero h1 {
  position: relative;
  z-index: 2;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
  animation: fadeInUp 0.8s var(--transition-slow) both;
}

#hero p {
  position: relative;
  z-index: 2;
  max-width: 800px;
  font-size: 1.05rem;
  line-height: 1.85;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 18px;
  animation: fadeInUp 0.8s var(--transition-slow) 0.1s both;
}

#hero p strong {
  color: #ffffff;
  font-weight: 700;
  background: linear-gradient(90deg, #ffd43b, #ff922b);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#hero nav {
  position: relative;
  z-index: 2;
  margin-top: 28px;
  animation: fadeInUp 0.8s var(--transition-slow) 0.2s both;
}

#hero nav ol {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.88rem;
}

#hero nav ol li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.75);
}

#hero nav ol li:not(:last-child)::after {
  content: "›";
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.5);
}

#hero nav ol li a {
  color: rgba(255, 255, 255, 0.85);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

#hero nav ol li a:hover {
  background: rgba(255, 255, 255, 0.22);
  color: #ffffff;
  transform: translateY(-1px);
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

h2 {
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  padding-bottom: 16px;
  position: relative;
  color: var(--color-text);
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 64px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  transition: width var(--transition-slow);
}

section:hover h2::after {
  width: 96px;
}

h3 {
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1.45;
  margin: 28px 0 12px;
  color: var(--color-text);
  position: relative;
  padding-left: 16px;
  transition: color var(--transition-fast);
}

h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.35em;
  width: 4px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  transition: transform var(--transition-base);
}

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

h3:hover::before {
  transform: scaleY(1.2);
}

h4 {
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.5;
  margin: 22px 0 10px;
  color: var(--color-primary);
}

p {
  margin-bottom: 14px;
  color: var(--color-text-soft);
  line-height: 1.85;
}

section > p:last-child,
section > ul:last-child,
section > ol:last-child,
section > blockquote:last-child {
  margin-bottom: 0;
}

ul,
ol {
  margin: 0 0 16px;
  padding-left: 4px;
}

section ul li,
section ol li {
  position: relative;
  padding: 6px 0 6px 28px;
  color: var(--color-text-soft);
  line-height: 1.75;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

section ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 1em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 0 3px rgba(59, 91, 219, 0.12);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

section ul li:hover {
  color: var(--color-text);
  transform: translateX(4px);
}

section ul li:hover::before {
  transform: scale(1.3);
  box-shadow: 0 0 0 5px rgba(59, 91, 219, 0.18);
}

section ul li strong,
section ol li strong {
  color: var(--color-text);
  font-weight: 700;
}

section ol {
  counter-reset: item;
}

section ol li {
  counter-increment: item;
  padding-left: 40px;
}

section ol li::before {
  content: counter(item);
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(59, 91, 219, 0.3);
  transition: transform var(--transition-fast);
}

section ol li:hover::before {
  transform: scale(1.15) rotate(-8deg);
}

#about,
#products,
#advantages,
#solutions,
#applications,
#cases,
#testimonials,
#news,
#articles,
#faq,
#howto,
#contact,
#sitemap,
#links {
  animation: sectionReveal 0.7s var(--transition-slow) both;
}

@keyframes sectionReveal {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#about { animation-delay: 0.05s; }
#products { animation-delay: 0.1s; }
#advantages { animation-delay: 0.15s; }
#solutions { animation-delay: 0.2s; }
#applications { animation-delay: 0.25s; }
#cases { animation-delay: 0.3s; }
#testimonials { animation-delay: 0.35s; }
#news { animation-delay: 0.4s; }
#articles { animation-delay: 0.45s; }
#faq { animation-delay: 0.5s; }
#howto { animation-delay: 0.55s; }
#contact { animation-delay: 0.6s; }

#products h3,
#solutions h3,
#applications h3 {
  padding: 18px 20px;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding-left: 32px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#products h3::before,
#solutions h3::before,
#applications h3::before {
  left: 16px;
}

#products h3:hover,
#solutions h3:hover,
#applications h3:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 91, 219, 0.3);
}

#products p,
#solutions p,
#applications p {
  margin-top: 10px;
}

#advantages h3 {
  display: inline-block;
  padding: 8px 18px 8px 28px;
  background: var(--gradient-card);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  margin-top: 24px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#advantages h3::before {
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  bottom: auto;
  height: 60%;
}

#advantages h3:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: var(--shadow-sm);
}

#cases h3 {
  padding: 14px 18px 14px 30px;
  background: linear-gradient(135deg, rgba(59, 91, 219, 0.06), rgba(112, 72, 232, 0.06));
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius-sm);
  margin-top: 26px;
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

#cases h3::before {
  display: none;
}

#cases h3:hover {
  background: linear-gradient(135deg, rgba(59, 91, 219, 0.12), rgba(112, 72, 232, 0.12));
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

#testimonials blockquote {
  position: relative;
  margin: 20px 0;
  padding: 28px 28px 24px 56px;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#testimonials blockquote::before {
  content: "\201C";
  position: absolute;
  top: 8px;
  left: 18px;
  font-size: 4rem;
  font-family: var(--font-serif);
  line-height: 1;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  opacity: 0.5;
  transition: opacity var(--transition-base), transform var(--transition-base);
}

#testimonials blockquote:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 91, 219, 0.3);
}

#testimonials blockquote:hover::before {
  opacity: 0.9;
  transform: scale(1.1);
}

#testimonials blockquote p {
  font-size: 1.02rem;
  font-style: italic;
  color: var(--color-text);
  margin-bottom: 12px;
}

#testimonials blockquote footer {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-primary);
  text-align: right;
  padding-top: 10px;
  border-top: 1px dashed var(--color-border);
}

#testimonials blockquote footer::before {
  content: "";
  display: inline-block;
  width: 16px;
  height: 2px;
  background: var(--gradient-accent);
  vertical-align: middle;
  margin-right: 8px;
  border-radius: var(--radius-full);
}

#news h3 {
  padding: 16px 20px 16px 32px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#news h3::before {
  left: 14px;
}

#news h3:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 91, 219, 0.3);
}

#news time {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: #ffffff;
  background: var(--gradient-accent);
  padding: 2px 12px;
  border-radius: var(--radius-full);
  margin-right: 8px;
  vertical-align: middle;
  box-shadow: 0 2px 8px rgba(59, 91, 219, 0.25);
}

#news p {
  margin-top: 10px;
}

#articles article {
  padding: 24px 26px;
  margin-bottom: 20px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#articles article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 91, 219, 0.3);
}

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

#articles article h3 {
  margin-top: 0;
  padding-left: 0;
  font-size: 1.15rem;
}

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

#articles article time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  padding: 2px 10px;
  background: var(--gradient-card);
  border-radius: var(--radius-full);
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 6px 16px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

#articles article a:hover {
  background: var(--gradient-btn);
  color: #ffffff;
  border-color: transparent;
  transform: translateX(4px);
  box-shadow: var(--shadow-glow);
}

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

#faq h3 {
  padding: 14px 18px 14px 30px;
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  margin-bottom: 0;
  margin-top: 20px;
  font-size: 1.05rem;
  transition: background var(--transition-base), color var(--transition-fast);
}

#faq h3::before {
  left: 12px;
}

#faq h3:hover {
  background: linear-gradient(135deg, rgba(59, 91, 219, 0.14), rgba(112, 72, 232, 0.14));
}

#faq h3 + p {
  padding: 16px 20px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  margin-bottom: 4px;
  font-size: 0.95rem;
  transition: background var(--transition-base);
}

#howto h3 {
  padding: 12px 18px 12px 30px;
  background: var(--gradient-card);
  border-radius: var(--radius-full);
  border: 1px solid var(--color-border);
  display: inline-block;
  margin-top: 26px;
}

#howto h3::before {
  left: 12px;
}

#howto h4 {
  position: relative;
  padding: 10px 16px 10px 44px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-top: 20px;
  font-size: 1rem;
  color: var(--color-text);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#howto h4::before {
  content: "✓";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: #ffffff;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(59, 91, 219, 0.3);
}

#howto h4:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
  border-color: rgba(59, 91, 219, 0.3);
}

#contact ul li strong {
  display: inline-block;
  min-width: 96px;
  color: var(--color-primary);
  font-weight: 700;
}

#contact ul li {
  padding: 8px 0 8px 28px;
  border-bottom: 1px dashed var(--color-border);
}

#contact ul li:last-child {
  border-bottom: none;
}

#sitemap > ul > li {
  padding: 10px 0 10px 28px;
  font-weight: 600;
}

#sitemap > ul > li > a {
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--color-text);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

#sitemap > ul > li > a:hover {
  color: var(--color-primary);
  padding-left: 6px;
}

#sitemap ul ul {
  margin: 8px 0 4px 16px;
  padding-left: 16px;
  border-left: 2px solid var(--color-border);
}

#sitemap ul ul li {
  padding: 4px 0 4px 20px;
  font-weight: 400;
}

#sitemap ul ul li::before {
  width: 6px;
  height: 6px;
  top: 1.05em;
}

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

#links ul li {
  padding: 0;
}

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

#links ul li a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text-soft);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

#links ul li a::before {
  content: "🔗";
  font-size: 0.8rem;
  opacity: 0.7;
  transition: transform var(--transition-fast);
}

#links ul li a:hover {
  transform: translateY(-3px);
  color: var(--color-primary);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
  background: var(--gradient-card);
}

#links ul li a:hover::before {
  transform: rotate(-15deg) scale(1.1);
}

footer {
  position: relative;
  margin-top: 48px;
  padding: 56px 24px 32px;
  background: var(--color-surface);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-soft);
  overflow: hidden;
}

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

footer > section {
  max-width: var(--max-width);
  margin: 0 auto 28px;
  padding: 0;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: none;
  box-shadow: none;
  border-radius: 0;
  overflow: visible;
}

footer > section::before {
  display: none;
}

footer > section:hover {
  box-shadow: none;
}

footer h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 14px;
  padding-bottom: 10px;
  color: var(--color-text);
}

footer h2::after {
  width: 36px;
  height: 3px;
}

footer p {
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 10px;
}

footer ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
}

footer ul li {
  padding: 4px 0 4px 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
}

footer ul li::before {
  display: none;
}

footer ul li:hover {
  transform: none;
}

footer nav[aria-label="底部导航"] {
  max-width: var(--max-width);
  margin: 32px auto 0;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

footer nav[aria-label="底部导航"] ul {
  justify-content: center;
  gap: 8px 20px;
}

footer nav[aria-label="底部导航"] ul li a {
  font-size: 0.86rem;
  color: var(--color-text-muted);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background var(--transition-fast);
}

footer nav[aria-label="底部导航"] ul li a:hover {
  color: var(--color-primary);
  background: var(--gradient-card);
}

#footer-info ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 8px 24px;
}

#footer-info ul li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 6px 0;
  border-bottom: 1px dashed var(--color-border);
}

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

#copyright,
#privacy,
#disclaimer {
  padding: 20px 24px !important;
  background: var(--color-bg-alt) !important;
  border: 1px solid var(--color-border) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-sm) !important;
  transition: transform var(--transition-base), box-shadow var(--transition-base) !important;
}

#copyright:hover,
#privacy:hover,
#disclaimer:hover {
  transform: translateY(-3px) !important;
  box-shadow: var(--shadow-md) !important;
}

#copyright p:last-child {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-text);
  text-align: center;
}

@media (max-width: 960px) {
  :root {
    --header-height: 60px;
  }

  header nav {
    padding: 0 16px;
    gap: 12px;
  }

  header nav ul {
    gap: 2px;
  }

  header nav ul li a {
    padding: 6px 10px;
    font-size: 0.82rem;
  }

  main {
    padding: 24px 16px 48px;
  }

  section {
    padding: 28px 22px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
  }

  #hero {
    padding: 48px 26px;
    border-radius: var(--radius-lg);
  }

  footer {
    padding: 40px 16px 24px;
  }
}

@media (max-width: 720px) {
  body {
    font-size: 15px;
  }

  header nav {
    flex-direction: column;
    height: auto;
    padding: 12px 16px;
    gap: 10px;
  }

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

  header nav ul {
    width: 100%;
    justify-content: center;
    gap: 4px;
  }

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

  #hero {
    padding: 40px 20px;
  }

  #hero h1 {
    font-size: 1.6rem;
  }

  #hero p {
    font-size: 0.95rem;
  }

  section {
    padding: 24px 18px;
    border-radius: var(--radius-md);
  }

  h2 {
    font-size: 1.35rem;
    margin-bottom: 20px;
  }

  h3 {
    font-size: 1.08rem;
  }

  h4 {
    font-size: 0.98rem;
  }

  #products h3,
  #solutions h3,
  #applications h3,
  #news h3,
  #faq h3,
  #cases h3,
  #howto h3,
  #howto h4 {
    padding-left: 28px;
  }

  #testimonials blockquote {
    padding: 22px 20px 18px 44px;
  }

  #testimonials blockquote::before {
    font-size: 3rem;
    left: 12px;
  }

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

  #links ul {
    gap: 8px;
  }

  #links ul li a {
    padding: 8px 14px;
    font-size: 0.82rem;
  }

  #contact ul li strong {
    display: block;
    min-width: auto;
    margin-bottom: 2px;
  }

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

  footer nav[aria-label="底部导航"] ul {
    gap: 4px 12px;
  }
}

@media (max-width: 420px) {
  header nav ul li a {
    padding: 5px 8px;
    font-size: 0.75rem;
  }

  #hero h1 {
    font-size: 1.4rem;
  }

  section {
    padding: 20px 14px;
  }

  h2 {
    font-size: 1.2rem;
  }

  #testimonials blockquote {
    padding: 20px 16px 16px 40px;
  }
}

@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;
  }
}

@media print {
  header,
  footer,
  #links,
  #sitemap {
    display: none;
  }

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

  section {
    box-shadow: none;
    border: 1px solid #cccccc;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  #hero {
    background: #ffffff;
    color: #000000;
  }

  #hero h1,
  #hero p,
  #hero nav ol li,
  #hero nav ol li a {
    color: #000000;
  }
}