:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --bg-card: rgba(30, 30, 55, 0.65);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-hover: rgba(255, 255, 255, 0.12);
  --text-primary: #eaeaf2;
  --text-secondary: #a8a8c0;
  --text-muted: #6b6b8a;
  --accent-1: #e94560;
  --accent-2: #7b2ff7;
  --accent-3: #00d2ff;
  --accent-4: #ff6b9d;
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 30%, #0f3460 60%, #533483 100%);
  --gradient-btn: linear-gradient(135deg, #e94560, #7b2ff7);
  --gradient-accent: linear-gradient(135deg, #00d2ff, #7b2ff7);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.18);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(123, 47, 247, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg-primary: #f5f5fa;
    --bg-secondary: #ffffff;
    --bg-tertiary: #eeeef6;
    --bg-card: rgba(255, 255, 255, 0.72);
    --bg-glass: rgba(255, 255, 255, 0.55);
    --bg-glass-hover: rgba(255, 255, 255, 0.8);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a8;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(123, 47, 247, 0.15);
    --gradient-hero: linear-gradient(135deg, #e8e8f5 0%, #dce4f5 30%, #c8d8f0 60%, #e0d0f0 100%);
  }
}

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

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

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

body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 15% 20%, rgba(123, 47, 247, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse at 85% 75%, rgba(233, 69, 96, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 50%, rgba(0, 210, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

::selection {
  background: rgba(123, 47, 247, 0.4);
  color: #fff;
}

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

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--accent-2), var(--accent-1));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--accent-1), var(--accent-2));
}

a {
  color: var(--accent-3);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}

a:hover {
  color: var(--accent-4);
}

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-primary);
}

h1 {
  font-size: clamp(1.75rem, 4.5vw, 3rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  letter-spacing: -0.01em;
  position: relative;
  padding-bottom: 0.6em;
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--gradient-accent);
  border-radius: 2px;
  transition: width var(--transition);
}

section:hover > h2::after {
  width: 100px;
}

h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.45rem);
  margin-bottom: 0.5em;
}

h4 {
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  margin-bottom: 0.4em;
  color: var(--accent-3);
}

p {
  margin-bottom: 1em;
  color: var(--text-secondary);
}

strong {
  color: var(--text-primary);
  font-weight: 600;
}

blockquote {
  position: relative;
  margin: 1.5em 0;
  padding: 1.2em 1.5em 1.2em 2em;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-left: 4px solid var(--accent-2);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

blockquote p {
  margin-bottom: 0;
  font-style: italic;
  color: var(--text-secondary);
}

address {
  font-style: normal;
  margin-bottom: 1em;
}

address p {
  margin-bottom: 0.35em;
}

details {
  margin-bottom: 1em;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

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

details[open] {
  border-color: rgba(123, 47, 247, 0.35);
  box-shadow: var(--shadow-glow);
}

details summary {
  padding: 1.1em 1.4em;
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.75em;
  transition: background var(--transition), color var(--transition);
  user-select: none;
}

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

details summary::before {
  content: "▸";
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  background: var(--gradient-btn);
  color: #fff;
  border-radius: 50%;
  font-size: 0.7rem;
  transition: transform var(--transition);
}

details[open] summary::before {
  transform: rotate(90deg);
}

details summary:hover {
  background: var(--bg-glass);
}

details > p {
  padding: 0 1.4em 1.2em;
  margin-bottom: 0;
  animation: fadeSlideIn 0.4s ease forwards;
}

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

header[role="banner"] {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition), box-shadow var(--transition);
}

@media (prefers-color-scheme: light) {
  header[role="banner"] {
    background: rgba(255, 255, 255, 0.72);
  }
}

header[role="banner"]:hover {
  box-shadow: var(--shadow-md);
}

nav[aria-label="主导航"] {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

nav[aria-label="主导航"] > a:first-child {
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--gradient-btn);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.04em;
  transition: opacity var(--transition), transform var(--transition);
  white-space: nowrap;
}

nav[aria-label="主导航"] > a:first-child:hover {
  opacity: 0.85;
  transform: scale(1.03);
}

nav[aria-label="主导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  align-items: center;
}

nav[aria-label="主导航"] ul li a {
  display: inline-block;
  padding: 0.45em 0.8em;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition), transform var(--transition);
  position: relative;
}

nav[aria-label="主导航"] ul li a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--gradient-btn);
  border-radius: 1px;
  transition: transform var(--transition);
}

nav[aria-label="主导航"] ul li a:hover {
  color: var(--text-primary);
  background: var(--bg-glass);
  transform: translateY(-1px);
}

nav[aria-label="主导航"] ul li a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

main {
  position: relative;
  z-index: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem 4rem;
}

main > section {
  margin-bottom: 4rem;
  animation: sectionReveal 0.7s ease both;
}

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; }

@keyframes sectionReveal {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#hero {
  position: relative;
  margin-top: 1.5rem;
  padding: clamp(2.5rem, 6vw, 5rem) clamp(1.5rem, 4vw, 3.5rem);
  background: var(--gradient-hero);
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

#hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 40%, rgba(123, 47, 247, 0.18) 0%, transparent 45%),
    radial-gradient(circle at 70% 60%, rgba(233, 69, 96, 0.14) 0%, transparent 45%),
    radial-gradient(circle at 50% 80%, rgba(0, 210, 255, 0.1) 0%, transparent 40%);
  animation: heroGlow 12s ease-in-out infinite alternate;
  pointer-events: none;
}

@keyframes heroGlow {
  0% {
    transform: translate(0, 0) scale(1);
    opacity: 0.8;
  }
  50% {
    transform: translate(3%, -3%) scale(1.05);
    opacity: 1;
  }
  100% {
    transform: translate(-2%, 2%) scale(1.02);
    opacity: 0.85;
  }
}

#hero > * {
  position: relative;
  z-index: 1;
}

#hero h1 {
  background: linear-gradient(135deg, #ffffff 0%, #e0d0ff 40%, #ffb8d0 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 0.6em;
  text-shadow: none;
  animation: titleShine 4s ease-in-out infinite alternate;
}

@media (prefers-color-scheme: light) {
  #hero h1 {
    background: linear-gradient(135deg, #1a1a2e 0%, #533483 40%, #e94560 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

@keyframes titleShine {
  from { filter: brightness(1); }
  to { filter: brightness(1.15); }
}

#hero > p {
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  color: var(--text-secondary);
  max-width: 900px;
  line-height: 1.85;
  margin-bottom: 1.5em;
}

#hero nav[aria-label="面包屑"] {
  margin-bottom: 1.2em;
}

#hero nav[aria-label="面包屑"] ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em;
  align-items: center;
  font-size: 0.88rem;
}

#hero nav[aria-label="面包屑"] ol li {
  color: var(--text-muted);
}

#hero nav[aria-label="面包屑"] ol li + li::before {
  content: "/";
  margin-right: 0.4em;
  color: var(--text-muted);
  opacity: 0.5;
}

#hero nav[aria-label="面包屑"] ol li a {
  color: var(--accent-3);
}

#hero nav[aria-label="面包屑"] ol li a:hover {
  color: var(--accent-4);
}

#hero nav[aria-label="站内锚点导航"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

#hero nav[aria-label="站内锚点导航"] ul li a {
  display: inline-block;
  padding: 0.5em 1.1em;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  transition: all var(--transition);
  white-space: nowrap;
}

#hero nav[aria-label="站内锚点导航"] ul li a:hover {
  background: var(--gradient-btn);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

#brand,
#products,
#solutions,
#cases,
#news,
#articles,
#faq,
#howto,
#contact,
#sitemap,
#links {
  padding: clamp(1.8rem, 3.5vw, 2.8rem);
  background: var(--bg-card);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

#brand:hover,
#products:hover,
#solutions:hover,
#cases:hover,
#news:hover,
#articles:hover,
#faq:hover,
#howto:hover,
#contact:hover,
#sitemap:hover,
#links:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

#brand h3 {
  margin-top: 1.5em;
  margin-bottom: 0.6em;
  padding-left: 0.7em;
  border-left: 3px solid var(--accent-2);
  transition: border-color var(--transition);
}

#brand h3:hover {
  border-left-color: var(--accent-1);
}

#brand address {
  padding: 1.2em 1.5em;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin: 1em 0;
}

#brand > p:last-child {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 1em;
  padding-top: 1em;
  border-top: 1px solid var(--border-color);
}

#products > p {
  max-width: 800px;
}

#products h3 {
  margin-top: 1.5em;
  margin-bottom: 0.8em;
}

#products h4 {
  margin-top: 1.2em;
  padding: 0.6em 1em;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-3);
  transition: all var(--transition);
}

#products h4:hover {
  background: var(--bg-glass-hover);
  transform: translateX(4px);
}

#products ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.8rem;
  margin-top: 1em;
}

#products ul li {
  padding: 0.9em 1.1em;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

#products ul li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 100%;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition);
}

#products ul li:hover::before {
  transform: scaleY(1);
}

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

#products ul li strong {
  color: var(--accent-3);
}

#solutions h3 {
  margin-top: 1.5em;
  margin-bottom: 0.6em;
  padding-left: 0.7em;
  border-left: 3px solid var(--accent-1);
}

#solutions ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.8rem;
  margin-top: 1em;
}

#solutions ul li {
  padding: 0.9em 1.1em;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}

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

#cases h3 {
  margin-top: 1.5em;
  margin-bottom: 0.6em;
  color: var(--accent-3);
}

#cases blockquote {
  margin: 1em 0;
}

#cases blockquote p {
  font-style: normal;
}

#news article {
  padding: 1.2em 1.5em;
  margin-bottom: 1em;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

#news article::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-btn);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

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

#news article:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm);
}

#news article h3 {
  margin-bottom: 0.3em;
  font-size: 1.08rem;
}

#news article p:first-of-type {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0.5em;
}

#articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.2rem;
}

#articles > h2 {
  grid-column: 1 / -1;
}

#articles article {
  padding: 1.4em 1.6em;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

#articles article::after {
  content: "";
  position: absolute;
  bottom: 0;
  right: 0;
  width: 80px;
  height: 80px;
  background: radial-gradient(circle, rgba(123, 47, 247, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, 30%);
  transition: transform var(--transition-slow), opacity var(--transition);
  opacity: 0;
}

#articles article:hover::after {
  transform: translate(15%, 15%);
  opacity: 1;
}

#articles article:hover {
  background: var(--bg-glass-hover);
  border-color: rgba(123, 47, 247, 0.3);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

#articles article h3 {
  font-size: 1.05rem;
  margin-bottom: 0.4em;
  transition: color var(--transition);
}

#articles article:hover h3 {
  color: var(--accent-3);
}

#articles article p:first-of-type {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.6em;
}

#articles article p:nth-of-type(2) {
  font-size: 0.92rem;
  flex-grow: 1;
  margin-bottom: 1em;
}

#articles article p:last-of-type {
  margin-bottom: 0;
}

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-4);
  transition: all var(--transition);
}

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

#articles article a:hover {
  color: var(--accent-3);
}

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

#article-1,
#article-2,
#article-3,
#article-4,
#article-5,
#article-6,
#article-7,
#article-8,
#article-9,
#article-10 {
  padding: clamp(1.8rem, 3.5vw, 2.8rem);
  background: var(--bg-card);
  backdrop-filter: blur(18px) saturate(150%);
  -webkit-backdrop-filter: blur(18px) saturate(150%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}

#article-1:hover,
#article-2:hover,
#article-3:hover,
#article-4:hover,
#article-5:hover,
#article-6:hover,
#article-7:hover,
#article-8:hover,
#article-9:hover,
#article-10:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

#article-1 > p:first-of-type,
#article-2 > p:first-of-type,
#article-3 > p:first-of-type,
#article-4 > p:first-of-type,
#article-5 > p:first-of-type,
#article-6 > p:first-of-type,
#article-7 > p:first-of-type,
#article-8 > p:first-of-type,
#article-9 > p:first-of-type,
#article-10 > p:first-of-type {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 1.2em;
}

#faq details {
  margin-bottom: 0.8rem;
}

#howto h3 {
  margin-top: 1.8em;
  margin-bottom: 0.8em;
  padding-left: 0.7em;
  border-left: 3px solid var(--accent-3);
}

#howto h4 {
  margin-top: 1.2em;
  padding: 0.6em 1em;
  background: var(--bg-glass);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-2);
  transition: all var(--transition);
}

#howto h4:hover {
  background: var(--bg-glass-hover);
  transform: translateX(4px);
}

#howto ul {
  margin: 1em 0;
  padding-left: 0;
}

#howto ul li {
  position: relative;
  padding: 0.5em 0 0.5em 1.8em;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition), transform var(--transition);
}

#howto ul li::before {
  content: "";
  position: absolute;
  left: 0.3em;
  top: 1em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gradient-btn);
  transition: transform var(--transition);
}

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

#howto ul li:hover::before {
  transform: scale(1.4);
}

#contact address {
  padding: 1.4em 1.6em;
  background: var(--bg-glass);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 1.5em;
}

#contact h3 {
  margin-top: 1.5em;
  margin-bottom: 0.6em;
  padding-left: 0.7em;
  border-left: 3px solid var(--accent-1);
}

#sitemap ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.6rem;
}

#sitemap ul li a {
  display: block;
  padding: 0.7em 1em;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-align: center;
}

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

#links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

#links ul li a {
  display: inline-block;
  padding: 0.55em 1.2em;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: 50px;
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}

#links ul li a:hover {
  background: var(--bg-glass-hover);
  color: var(--accent-3);
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

footer[role="contentinfo"] {
  position: relative;
  z-index: 1;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: clamp(2rem, 4vw, 3.5rem) 1.5rem;
  margin-top: 2rem;
  transition: background var(--transition);
}

footer[role="contentinfo"] > section {
  max-width: 1280px;
  margin: 0 auto 2rem;
  padding: 1.5em 1.8em;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), box-shadow var(--transition);
}

footer[role="contentinfo"] > section:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-sm);
}

footer[role="contentinfo"] > section h2 {
  font-size: 1.15rem;
  padding-bottom: 0.5em;
  margin-bottom: 0.8em;
}

footer[role="contentinfo"] > section h2::after {
  width: 40px;
  height: 3px;
}

footer[role="contentinfo"] > section:hover h2::after {
  width: 70px;
}

footer[role="contentinfo"] > section p {
  font-size: 0.9rem;
  line-height: 1.8;
}

footer[role="contentinfo"] > p {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 0.4em 0;
}

footer[role="contentinfo"] > p:last-child {
  margin-top: 0.3em;
  padding-top: 1em;
  border-top: 1px solid var(--border-color);
}

@media (max-width: 1024px) {
  nav[aria-label="主导航"] {
    padding: 0.65rem 1.2rem;
  }

  nav[aria-label="主导航"] ul li a {
    padding: 0.4em 0.65em;
    font-size: 0.84rem;
  }

  main {
    padding: 0 1.2rem 3rem;
  }

  #articles {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

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

  nav[aria-label="主导航"] {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 0.7rem 1rem;
  }

  nav[aria-label="主导航"] > a:first-child {
    font-size: 1.25rem;
  }

  nav[aria-label="主导航"] ul {
    width: 100%;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 0.3rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  nav[aria-label="主导航"] ul::-webkit-scrollbar {
    display: none;
  }

  nav[aria-label="主导航"] ul li a {
    white-space: nowrap;
    font-size: 0.82rem;
    padding: 0.4em 0.7em;
  }

  main {
    padding: 0 1rem 2.5rem;
  }

  main > section {
    margin-bottom: 2.5rem;
  }

  #hero {
    margin-top: 1rem;
    padding: 2rem 1.3rem;
    border-radius: var(--radius-lg);
  }

  #hero nav[aria-label="站内锚点导航"] ul {
    gap: 0.4rem;
  }

  #hero nav[aria-label="站内锚点导航"] ul li a {
    padding: 0.4em 0.85em;
    font-size: 0.82rem;
  }

  #brand,
  #products,
  #solutions,
  #cases,
  #news,
  #articles,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links {
    padding: 1.4rem 1.2rem;
    border-radius: var(--radius-md);
  }

  #articles {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

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

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

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

  #links ul {
    gap: 0.5rem;
  }

  #links ul li a {
    padding: 0.45em 1em;
    font-size: 0.84rem;
  }

  blockquote {
    padding: 1em 1.2em 1em 1.5em;
  }

  details summary {
    padding: 0.9em 1.1em;
    font-size: 0.95rem;
  }

  details > p {
    padding: 0 1.1em 1em;
    font-size: 0.9rem;
  }

  footer[role="contentinfo"] {
    padding: 1.8rem 1rem;
  }

  footer[role="contentinfo"] > section {
    padding: 1.2em 1.3em;
  }
}

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

  #hero {
    padding: 1.6rem 1rem;
    border-radius: var(--radius-md);
  }

  #hero nav[aria-label="站内锚点导航"] ul li a {
    padding: 0.35em 0.7em;
    font-size: 0.78rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.05rem;
  }

  #products ul li,
  #solutions ul li {
    padding: 0.75em 0.9em;
    font-size: 0.88rem;
  }

  #articles article {
    padding: 1.1em 1.2em;
  }

  #articles article h3 {
    font-size: 0.98rem;
  }

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

  #sitemap ul li a {
    padding: 0.6em 0.8em;
    font-size: 0.84rem;
  }

  #links ul li a {
    padding: 0.4em 0.85em;
    font-size: 0.8rem;
  }
}

@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[role="banner"],
  footer[role="contentinfo"],
  nav[aria-label="站内锚点导航"],
  #sitemap,
  #links {
    display: none;
  }

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

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