:root {
  --primary: #4fc3f7;
  --primary-dark: #0288d1;
  --primary-light: #b3e5fc;
  --accent: #7c4dff;
  --accent-light: #b388ff;
  --bg: #f5f7fb;
  --bg-alt: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-strong: rgba(255, 255, 255, 0.9);
  --text: #1a1a2e;
  --text-secondary: #4a4a68;
  --text-muted: #7a7a9a;
  --border: rgba(26, 26, 46, 0.08);
  --border-strong: rgba(26, 26, 46, 0.14);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow: 0 8px 24px rgba(26, 26, 46, 0.08);
  --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.12);
  --shadow-glow: 0 8px 32px rgba(79, 195, 247, 0.28);
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --gradient-banner: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 75%, #1a1a2e 100%);
  --gradient-primary: linear-gradient(135deg, #4fc3f7 0%, #7c4dff 100%);
  --gradient-accent: linear-gradient(135deg, #7c4dff 0%, #4fc3f7 100%);
  --gradient-soft: linear-gradient(135deg, rgba(79, 195, 247, 0.12) 0%, rgba(124, 77, 255, 0.12) 100%);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: -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;
  --header-height: 72px;
  --max-width: 1200px;
}

[data-theme="dark"] {
  --bg: #0d0d1a;
  --bg-alt: #14142a;
  --bg-glass: rgba(20, 20, 42, 0.78);
  --bg-glass-strong: rgba(20, 20, 42, 0.92);
  --text: #e8e8f0;
  --text-secondary: #b0b0c8;
  --text-muted: #7a7a9a;
  --border: rgba(255, 255, 255, 0.08);
  --border-strong: rgba(255, 255, 255, 0.14);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 8px 32px rgba(79, 195, 247, 0.18);
  --gradient-banner: linear-gradient(135deg, #0a0a18 0%, #10102a 40%, #0a1a30 75%, #0a0a18 100%);
  --gradient-soft: linear-gradient(135deg, rgba(79, 195, 247, 0.08) 0%, rgba(124, 77, 255, 0.08) 100%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d0d1a;
    --bg-alt: #14142a;
    --bg-glass: rgba(20, 20, 42, 0.78);
    --bg-glass-strong: rgba(20, 20, 42, 0.92);
    --text: #e8e8f0;
    --text-secondary: #b0b0c8;
    --text-muted: #7a7a9a;
    --border: rgba(255, 255, 255, 0.08);
    --border-strong: rgba(255, 255, 255, 0.14);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 8px 32px rgba(79, 195, 247, 0.18);
    --gradient-banner: linear-gradient(135deg, #0a0a18 0%, #10102a 40%, #0a1a30 75%, #0a0a18 100%);
    --gradient-soft: linear-gradient(135deg, rgba(79, 195, 247, 0.08) 0%, rgba(124, 77, 255, 0.08) 100%);
  }
}

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

html {
  scroll-behavior: smooth;
  -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);
  background-color: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition), color var(--transition);
}

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

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

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

body::-webkit-scrollbar-thumb:hover {
  background: var(--primary);
}

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

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

[data-theme="dark"] a {
  color: var(--primary);
}

[data-theme="dark"] a:hover {
  color: var(--accent-light);
}

img,
svg {
  max-width: 100%;
  height: auto;
  vertical-align: middle;
}

ul,
ol {
  list-style: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

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

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

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

#site-header.scrolled {
  box-shadow: var(--shadow);
  background: var(--bg-glass-strong);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 16px;
}

.logo-area {
  flex-shrink: 0;
}

.logo-area a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-weight: 700;
}

.logo-area a:hover {
  color: var(--text);
  opacity: 0.85;
}

.logo-area svg {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.logo-area a:hover svg {
  transform: rotate(-6deg) scale(1.06);
  box-shadow: var(--shadow-glow);
}

.site-name {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

#main-nav {
  flex: 1;
  min-width: 0;
}

#main-nav ul {
  display: flex;
  align-items: center;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}

#main-nav ul::-webkit-scrollbar {
  display: none;
}

#main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition), transform var(--transition);
}

#main-nav a:hover {
  color: var(--primary-dark);
  background: var(--gradient-soft);
  transform: translateY(-1px);
}

[data-theme="dark"] #main-nav a:hover {
  color: var(--primary);
}

#mobile-menu-btn {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  color: var(--text);
  background: var(--border);
  transition: background var(--transition), transform var(--transition);
  flex-shrink: 0;
}

#mobile-menu-btn:hover {
  background: var(--gradient-soft);
  transform: scale(1.05);
}

#theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--border);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

#theme-toggle:hover {
  background: var(--gradient-soft);
  transform: rotate(20deg) scale(1.05);
  box-shadow: var(--shadow-glow);
}

#search-box {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

#search-box input {
  width: 160px;
  padding: 8px 14px;
  font-size: 0.875rem;
  color: var(--text);
  background: var(--bg-alt);
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  transition: width var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

#search-box input::placeholder {
  color: var(--text-muted);
}

#search-box input:focus {
  width: 220px;
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 195, 247, 0.18);
}

#search-box button {
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 999px;
  transition: transform var(--transition), box-shadow var(--transition), filter var(--transition);
  white-space: nowrap;
}

#search-box button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  filter: brightness(1.08);
}

#search-box button:active {
  transform: translateY(0);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

main > section {
  margin-top: 48px;
  opacity: 0;
  transform: translateY(28px);
  animation: fadeInUp 0.7s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

main > section:nth-child(1) { animation-delay: 0.05s; }
main > section:nth-child(2) { animation-delay: 0.1s; }
main > section:nth-child(3) { animation-delay: 0.15s; }
main > section:nth-child(4) { animation-delay: 0.2s; }
main > section:nth-child(5) { animation-delay: 0.25s; }
main > section:nth-child(6) { animation-delay: 0.3s; }
main > section:nth-child(7) { animation-delay: 0.35s; }
main > section:nth-child(8) { animation-delay: 0.4s; }

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

main > section > h2 {
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  margin-bottom: 20px;
  padding-left: 18px;
  position: relative;
  color: var(--text);
}

main > section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 5px;
  border-radius: 3px;
  background: var(--gradient-primary);
}

main > section > h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text);
  margin-top: 28px;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

main > section > p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  max-width: 72ch;
}

main > section > ul {
  display: grid;
  gap: 12px;
  margin: 16px 0;
}

main > section > ul > li {
  position: relative;
  padding: 14px 18px 14px 44px;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

main > section > ul > li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-primary);
  box-shadow: 0 0 0 4px rgba(79, 195, 247, 0.15);
}

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

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

#hero-banner {
  position: relative;
  margin-top: 32px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--gradient-banner);
  box-shadow: var(--shadow-lg);
  min-height: 380px;
  display: flex;
  align-items: center;
  animation-delay: 0s !important;
  opacity: 1 !important;
  transform: none !important;
}

#hero-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 20%, rgba(79, 195, 247, 0.28) 0%, transparent 45%),
    radial-gradient(circle at 85% 80%, rgba(124, 77, 255, 0.28) 0%, transparent 45%);
  pointer-events: none;
}

#hero-banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 2px,
    rgba(255, 255, 255, 0.015) 2px,
    rgba(255, 255, 255, 0.015) 4px
  );
  pointer-events: none;
}

.banner-slide {
  display: none;
  position: relative;
  z-index: 2;
  padding: 64px 56px;
  max-width: 780px;
  animation: bannerFade 0.6s ease forwards;
}

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

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

.banner-slide h1,
.banner-slide h2 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: #ffffff;
  margin-bottom: 18px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.banner-slide h1 {
  background: linear-gradient(135deg, #ffffff 0%, #b3e5fc 60%, #b388ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.banner-slide p {
  font-size: 1.05rem;
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
  max-width: 60ch;
}

.banner-nav {
  position: absolute;
  bottom: 28px;
  right: 32px;
  display: flex;
  gap: 10px;
  z-index: 3;
}

.banner-nav button {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  font-size: 1.5rem;
  line-height: 1;
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.banner-nav button:hover {
  background: rgba(79, 195, 247, 0.35);
  transform: scale(1.12);
  box-shadow: 0 0 24px rgba(79, 195, 247, 0.45);
}

nav[aria-label="面包屑导航"] {
  margin-top: 24px;
  animation-delay: 0.05s !important;
  opacity: 1 !important;
  transform: none !important;
}

nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--text-muted);
}

nav[aria-label="面包屑导航"] li + li::before {
  content: "›";
  margin-right: 8px;
  color: var(--text-muted);
}

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

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

nav[aria-label="面包屑导航"] [aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

nav[aria-label="页面锚点导航"] {
  margin-top: 20px;
  padding: 18px 22px;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  animation-delay: 0.1s !important;
  opacity: 1 !important;
  transform: none !important;
}

nav[aria-label="页面锚点导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

nav[aria-label="页面锚点导航"] a {
  display: inline-block;
  padding: 6px 14px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  transition: all var(--transition);
}

nav[aria-label="页面锚点导航"] a:hover {
  color: #fff;
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

#brand-intro,
#company,
#history,
#culture,
#products,
#advantages,
#solutions,
#applications,
#cases,
#reviews,
#news,
#articles,
#knowledge,
#faq,
#howto,
#contact,
#sitemap,
#links,
#author-info,
#team,
#qualification {
  padding: 36px 32px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}

#brand-intro:hover,
#company: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,
#author-info:hover,
#team:hover,
#qualification:hover {
  box-shadow: var(--shadow);
  border-color: var(--border-strong);
}

#company table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  font-size: 0.9375rem;
}

#company caption {
  caption-side: top;
  text-align: left;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  padding-bottom: 12px;
}

#company th,
#company td {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

#company th {
  width: 32%;
  font-weight: 600;
  color: var(--text);
  background: var(--gradient-soft);
}

#company td {
  color: var(--text-secondary);
}

#company tr:last-child th,
#company tr:last-child td {
  border-bottom: none;
}

#company tr {
  transition: background var(--transition);
}

#company tr:hover {
  background: var(--gradient-soft);
}

#culture ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

#culture ul li {
  padding: 18px 20px 18px 44px;
}

#products h3 {
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

#advantages ul {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

#solutions h3 {
  padding-left: 14px;
  border-left: 3px solid var(--accent);
}

#applications h3 {
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

#cases h3 {
  padding: 16px 20px;
  background: var(--gradient-soft);
  border-radius: var(--radius);
  border-left: 4px solid var(--primary);
  margin-top: 24px;
}

#reviews blockquote {
  position: relative;
  margin: 16px 0;
  padding: 24px 28px 24px 56px;
  background: var(--gradient-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-style: normal;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#reviews blockquote::before {
  content: "“";
  position: absolute;
  left: 18px;
  top: 10px;
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--primary);
  opacity: 0.5;
}

#reviews blockquote:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

#news article,
#articles article {
  position: relative;
  padding: 24px 26px;
  margin-top: 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
  background: var(--bg-alt);
}

#news article h3,
#articles article h3 {
  margin-top: 0;
  font-size: 1.1rem;
  line-height: 1.45;
  color: var(--text);
  transition: color var(--transition);
}

#news article:hover h3,
#articles article:hover h3 {
  color: var(--primary-dark);
}

[data-theme="dark"] #news article:hover h3,
[data-theme="dark"] #articles article:hover h3 {
  color: var(--primary);
}

#news time,
#articles time {
  display: inline-block;
  margin: 6px 0 10px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--primary-dark);
  letter-spacing: 0.02em;
}

[data-theme="dark"] #news time,
[data-theme="dark"] #articles time {
  color: var(--primary);
}

#news article p,
#articles article p {
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 14px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-dark);
  transition: gap var(--transition), color var(--transition);
}

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

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

#articles article a:hover::after {
  transform: translateX(3px);
}

#knowledge h3 {
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

#faq details {
  margin-top: 12px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

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

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

#faq summary {
  position: relative;
  padding: 18px 52px 18px 22px;
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition), background var(--transition);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 22px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--primary-dark);
  background: var(--gradient-soft);
  border-radius: 50%;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

[data-theme="dark"] #faq summary::after {
  color: var(--primary);
}

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  color: #fff;
  background: var(--gradient-primary);
}

#faq summary:hover {
  color: var(--primary-dark);
  background: var(--gradient-soft);
}

[data-theme="dark"] #faq summary:hover {
  color: var(--primary);
}

#faq details p {
  padding: 0 22px 20px;
  color: var(--text-secondary);
  font-size: 0.9375rem;
  animation: fadeInUp 0.35s ease;
}

#howto ol {
  counter-reset: howto-counter;
  display: grid;
  gap: 12px;
  margin: 16px 0;
}

#howto ol > li {
  position: relative;
  counter-increment: howto-counter;
  padding: 16px 20px 16px 64px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#howto ol > li::before {
  content: counter(howto-counter);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: 0 4px 12px rgba(79, 195, 247, 0.3);
}

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

#contact address {
  font-style: normal;
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

#contact address p {
  padding: 12px 16px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: border-color var(--transition), transform var(--transition);
}

#contact address p:hover {
  border-color: var(--primary);
  transform: translateX(4px);
}

#contact address strong {
  color: var(--text);
}

#sitemap ul,
#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}

#sitemap ul li,
#links ul li {
  padding: 0;
  background: none;
  border: none;
  box-shadow: none;
}

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

#sitemap a,
#links a {
  display: block;
  padding: 10px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

#sitemap a:hover,
#links a:hover {
  color: #fff;
  background: var(--gradient-primary);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

#author-info p,
#team p,
#qualification p {
  color: var(--text-secondary);
}

#author-info strong {
  color: var(--text);
}

footer {
  position: relative;
  margin-top: 80px;
  padding: 56px 24px 40px;
  background: var(--gradient-banner);
  color: rgba(255, 255, 255, 0.75);
  overflow: hidden;
}

footer::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 10% 20%, rgba(79, 195, 247, 0.16) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(124, 77, 255, 0.16) 0%, transparent 40%);
  pointer-events: none;
}

footer > div,
footer > nav {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
}

footer > div:first-child {
  margin-bottom: 32px;
}

footer h2 {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 10px;
  background: linear-gradient(135deg, #ffffff 0%, #b3e5fc 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

footer h3 {
  font-size: 1rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 8px;
}

footer p {
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.7);
  max-width: 60ch;
}

footer nav[aria-label="底部导航"] {
  margin-bottom: 32px;
}

footer nav[aria-label="底部导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
}

footer nav[aria-label="底部导航"] a {
  font-size: 0.875rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--transition), transform var(--transition);
}

footer nav[aria-label="底部导航"] a:hover {
  color: var(--primary-light);
  transform: translateY(-2px);
}

footer > div:not(:first-child):not(:last-child) {
  margin-bottom: 24px;
}

footer > div:last-child {
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 999;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: #fff;
  background: var(--gradient-primary);
  border-radius: 50%;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), box-shadow var(--transition);
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 12px 36px rgba(79, 195, 247, 0.5);
}

#back-to-top:active {
  transform: translateY(-2px) scale(1.02);
}

@media (max-width: 1024px) {
  .header-inner {
    padding: 0 16px;
    gap: 10px;
  }

  #main-nav a {
    padding: 8px 10px;
    font-size: 0.8125rem;
  }

  #search-box input {
    width: 120px;
  }

  #search-box input:focus {
    width: 160px;
  }

  .banner-slide {
    padding: 48px 40px;
  }

  .banner-slide h1,
  .banner-slide h2 {
    font-size: 2rem;
  }

  main {
    padding: 0 16px 64px;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
  }

  #mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  #main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 999;
    background: var(--bg-glass-strong);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  #main-nav.open {
    max-height: 80vh;
    overflow-y: auto;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px;
  }

  #main-nav a {
    padding: 14px 16px;
    font-size: 0.9375rem;
    border-radius: var(--radius-sm);
  }

  #search-box input {
    display: none;
  }

  #search-box button {
    padding: 8px 12px;
    font-size: 0.8125rem;
  }

  #hero-banner {
    min-height: 320px;
    border-radius: var(--radius-lg);
  }

  .banner-slide {
    padding: 40px 24px 72px;
  }

  .banner-slide h1,
  .banner-slide h2 {
    font-size: 1.5rem;
  }

  .banner-slide p {
    font-size: 0.9375rem;
  }

  .banner-nav {
    bottom: 20px;
    right: 20px;
  }

  .banner-nav button {
    width: 38px;
    height: 38px;
    font-size: 1.25rem;
  }

  main > section {
    margin-top: 32px;
  }

  main > section > h2 {
    font-size: 1.375rem;
  }

  main > section > h3 {
    font-size: 1.05rem;
  }

  #brand-intro,
  #company,
  #history,
  #culture,
  #products,
  #advantages,
  #solutions,
  #applications,
  #cases,
  #reviews,
  #news,
  #articles,
  #knowledge,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links,
  #author-info,
  #team,
  #qualification {
    padding: 24px 20px;
    border-radius: var(--radius);
  }

  #company th,
  #company td {
    padding: 12px 14px;
    font-size: 0.875rem;
  }

  #company th {
    width: 38%;
  }

  #advantages ul,
  #culture ul {
    grid-template-columns: 1fr;
  }

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

  footer {
    padding: 40px 20px 32px;
  }

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .site-name {
    font-size: 1.05rem;
  }

  .logo-area svg {
    width: 34px;
    height: 34px;
  }

  .banner-slide h1,
  .banner-slide h2 {
    font-size: 1.3rem;
  }

  .banner-slide {
    padding: 32px 18px 64px;
  }

  main > section > h2 {
    font-size: 1.25rem;
    padding-left: 14px;
  }

  main > section > ul > li {
    padding: 12px 14px 12px 38px;
  }

  main > section > ul > li::before {
    left: 14px;
    width: 8px;
    height: 8px;
  }

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

  #howto ol > li::before {
    left: 14px;
    width: 28px;
    height: 28px;
    font-size: 0.8125rem;
  }

  #faq summary {
    padding: 16px 46px 16px 18px;
    font-size: 0.875rem;
  }

  #faq summary::after {
    right: 16px;
    width: 24px;
    height: 24px;
  }

  #reviews blockquote {
    padding: 20px 20px 20px 46px;
  }

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

  footer nav[aria-label="底部导航"] ul {
    gap: 8px 16px;
  }
}

@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;
  }
}

@media print {
  #site-header,
  #back-to-top,
  #mobile-menu-btn,
  #theme-toggle,
  #search-box,
  .banner-nav,
  footer nav,
  nav[aria-label="页面锚点导航"] {
    display: none !important;
  }

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

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

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