:root {
  --mango-primary: #FF6B35;
  --mango-primary-dark: #E85A2A;
  --mango-primary-light: #FF8F66;
  --mango-secondary: #FFB347;
  --mango-accent: #FF3D71;
  --mango-gradient: linear-gradient(135deg, #FF6B35 0%, #FF3D71 50%, #FFB347 100%);
  --mango-gradient-soft: linear-gradient(135deg, rgba(255, 107, 53, 0.12) 0%, rgba(255, 61, 113, 0.08) 100%);
  --bg-body: #FFF9F5;
  --bg-card: #FFFFFF;
  --bg-glass: rgba(255, 255, 255, 0.72);
  --bg-glass-strong: rgba(255, 255, 255, 0.88);
  --bg-header: rgba(255, 249, 245, 0.82);
  --bg-code: #FFF3EC;
  --text-primary: #1F1410;
  --text-secondary: #5C4A42;
  --text-muted: #8A776E;
  --border-color: rgba(255, 107, 53, 0.14);
  --border-soft: rgba(31, 20, 16, 0.08);
  --shadow-sm: 0 2px 8px rgba(255, 107, 53, 0.08);
  --shadow-md: 0 8px 24px rgba(255, 107, 53, 0.12);
  --shadow-lg: 0 16px 48px rgba(255, 107, 53, 0.16);
  --shadow-glow: 0 0 40px rgba(255, 107, 53, 0.25);
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-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(0.4, 0, 0.2, 1);
  --max-width: 1200px;
  --header-height: 68px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #14100E;
    --bg-card: #1E1815;
    --bg-glass: rgba(30, 24, 21, 0.72);
    --bg-glass-strong: rgba(30, 24, 21, 0.88);
    --bg-header: rgba(20, 16, 14, 0.82);
    --bg-code: #2A211C;
    --text-primary: #F5EDE8;
    --text-secondary: #C9B8AE;
    --text-muted: #9A877C;
    --border-color: rgba(255, 107, 53, 0.22);
    --border-soft: rgba(245, 237, 232, 0.08);
    --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 40px rgba(255, 107, 53, 0.35);
    --mango-gradient-soft: linear-gradient(135deg, rgba(255, 107, 53, 0.18) 0%, rgba(255, 61, 113, 0.12) 100%);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
  -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-primary);
  background-color: var(--bg-body);
  background-image:
    radial-gradient(circle at 10% 0%, rgba(255, 107, 53, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 90% 20%, rgba(255, 61, 113, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 50% 100%, rgba(255, 179, 71, 0.05) 0%, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

ul,
ol {
  list-style: none;
}

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

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

::-webkit-scrollbar-track {
  background: transparent;
}

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

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

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

header[role="banner"] nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-height);
  display: flex;
  align-items: center;
  gap: 32px;
}

header[role="banner"] nav > a:first-child {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: var(--mango-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  white-space: nowrap;
  position: relative;
  padding-left: 34px;
  flex-shrink: 0;
}

header[role="banner"] nav > a:first-child::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: var(--mango-gradient);
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.4);
}

header[role="banner"] nav > a:first-child::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: inset 0 0 0 3px rgba(255, 107, 53, 0.3);
}

header[role="banner"] nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
  margin-left: auto;
}

header[role="banner"] nav ul li a {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-pill);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

header[role="banner"] nav ul li a::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--mango-gradient);
  transition: transform var(--transition-base);
}

header[role="banner"] nav ul li a:hover {
  color: var(--mango-primary);
  background: var(--mango-gradient-soft);
  transform: translateY(-1px);
}

header[role="banner"] nav ul li a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

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

section {
  margin-bottom: 72px;
  scroll-margin-top: calc(var(--header-height) + 24px);
}

section h2 {
  font-size: clamp(1.5rem, 3.5vw, 2.1rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  color: var(--text-primary);
  position: relative;
  padding-left: 20px;
}

section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 5px;
  border-radius: var(--radius-pill);
  background: var(--mango-gradient);
  box-shadow: 0 0 16px rgba(255, 107, 53, 0.5);
}

section h3 {
  font-size: clamp(1.15rem, 2.5vw, 1.4rem);
  font-weight: 700;
  line-height: 1.4;
  margin: 32px 0 14px;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

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

section h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 22px 0 10px;
  color: var(--mango-primary-dark);
  display: flex;
  align-items: center;
  gap: 8px;
}

section h4::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mango-gradient);
  flex-shrink: 0;
  box-shadow: 0 0 10px rgba(255, 107, 53, 0.6);
}

section p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.85;
}

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

#hero {
  position: relative;
  margin-top: 32px;
  padding: 0;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background: var(--mango-gradient);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  isolation: isolate;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.25) 0%, transparent 45%),
    radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.15) 0%, transparent 45%);
  z-index: 1;
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.08), transparent);
  transform: rotate(25deg);
  z-index: 1;
  pointer-events: none;
  animation: heroShine 6s ease-in-out infinite;
}

@keyframes heroShine {
  0%, 100% { transform: rotate(25deg) translateX(-30%); opacity: 0.6; }
  50% { transform: rotate(25deg) translateX(30%); opacity: 1; }
}

#hero figure {
  position: relative;
  z-index: 2;
  margin: 0;
  padding: 48px 40px 0;
  display: flex;
  flex-direction: column;
  align-items: center;
}

#hero figure svg {
  width: 100%;
  max-width: 560px;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
  background: rgba(255, 255, 255, 0.1);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

#hero figure svg:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
}

#hero figcaption {
  margin-top: 24px;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
  text-align: center;
  font-weight: 500;
  letter-spacing: 0.02em;
}

#hero h1 {
  position: relative;
  z-index: 2;
  font-size: clamp(1.6rem, 4.5vw, 2.6rem);
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -0.03em;
  color: #FFFFFF;
  text-align: center;
  padding: 32px 40px 0;
  text-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

#hero > p {
  position: relative;
  z-index: 2;
  max-width: 760px;
  margin: 16px auto 0;
  padding: 0 40px;
  text-align: center;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.02rem;
  line-height: 1.8;
}

#hero nav[aria-label="面包屑导航"] {
  position: relative;
  z-index: 2;
  padding: 28px 40px 36px;
}

#hero nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 0.88rem;
}

#hero nav[aria-label="面包屑导航"] ol li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255, 255, 255, 0.75);
}

#hero nav[aria-label="面包屑导航"] ol li + li::before {
  content: "›";
  color: rgba(255, 255, 255, 0.6);
  font-size: 1.1rem;
  line-height: 1;
}

#hero nav[aria-label="面包屑导航"] ol li a {
  color: rgba(255, 255, 255, 0.9);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast);
}

#hero nav[aria-label="面包屑导航"] ol li a:hover {
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.18);
}

#brand,
#products,
#solutions,
#applications,
#cases,
#news,
#articles,
#knowledge,
#faq,
#howto,
#contact,
#sitemap,
#links,
#legal,
#update {
  background: var(--bg-card);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}

#brand:hover,
#products:hover,
#solutions:hover,
#applications:hover,
#cases:hover,
#news:hover,
#articles:hover,
#knowledge:hover,
#faq:hover,
#howto:hover,
#contact:hover,
#sitemap:hover,
#links:hover,
#legal:hover,
#update:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-color);
}

#brand {
  background:
    linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
    var(--mango-gradient) border-box;
  border: 1px solid transparent;
}

#products h4 {
  padding: 14px 18px;
  background: var(--mango-gradient-soft);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--mango-primary);
  margin-top: 26px;
}

#products h4::before {
  display: none;
}

#products h4 + p {
  margin-top: 12px;
  padding-left: 4px;
}

#solutions h3,
#applications h3,
#knowledge h3 {
  padding-bottom: 10px;
  border-bottom: 2px dashed var(--border-color);
  margin-bottom: 16px;
}

#cases blockquote {
  position: relative;
  margin: 18px 0;
  padding: 22px 24px 22px 60px;
  background: var(--mango-gradient-soft);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--mango-primary);
  font-style: italic;
  color: var(--text-secondary);
  line-height: 1.8;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 8px;
  font-size: 3.2rem;
  line-height: 1;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--mango-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  opacity: 0.85;
}

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

#cases blockquote p {
  margin-bottom: 0;
  font-size: 0.98rem;
}

#news article,
#articles article {
  position: relative;
  padding: 24px 26px;
  margin-bottom: 18px;
  background: var(--bg-body);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

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

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  background: var(--mango-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

#news article:hover::before,
#articles article:hover::before {
  opacity: 1;
}

#news article h3,
#articles article h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.15rem;
  transition: color var(--transition-fast);
}

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

#news article time,
#articles article time {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--mango-primary);
  background: var(--mango-gradient-soft);
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

#articles article p:last-child {
  margin-bottom: 0;
  margin-top: 12px;
}

#articles article p:last-child a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 8px 18px;
  border-radius: var(--radius-pill);
  background: var(--mango-gradient);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(255, 107, 53, 0.3);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), filter var(--transition-fast);
}

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

#articles article p:last-child a:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 22px rgba(255, 107, 53, 0.45);
  filter: brightness(1.05);
}

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

#faq details {
  margin-bottom: 12px;
  background: var(--bg-body);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base), transform var(--transition-base);
}

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

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

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

#faq summary {
  cursor: pointer;
  padding: 18px 22px 18px 52px;
  font-weight: 700;
  font-size: 1rem;
  color: var(--text-primary);
  position: relative;
  list-style: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  -webkit-user-select: none;
  user-select: none;
}

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

#faq summary::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 50%;
  transform: translateY(-50%);
  width: 18px;
  height: 18px;
  border-radius: 6px;
  background: var(--mango-gradient);
  box-shadow: 0 2px 8px rgba(255, 107, 53, 0.35);
  transition: transform var(--transition-base), border-radius var(--transition-base);
}

#faq summary::after {
  content: "";
  position: absolute;
  left: 27px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 2px solid #FFFFFF;
  border-bottom: 2px solid #FFFFFF;
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--transition-base);
}

#faq details[open] summary::after {
  transform: translateY(-30%) rotate(225deg);
}

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

#faq details > p {
  padding: 0 22px 20px 52px;
  margin-bottom: 0;
  animation: faqReveal 0.35s ease;
}

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

#howto h3 {
  position: relative;
  padding-left: 18px;
}

#howto h3::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.35em;
  bottom: 0.35em;
  width: 4px;
  border-radius: var(--radius-pill);
  background: var(--mango-gradient);
}

#howto h4 {
  counter-increment: howto-step;
  padding: 16px 20px;
  background: var(--mango-gradient-soft);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-top: 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#howto h4::before {
  content: counter(howto-step);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--mango-gradient);
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 3px 10px rgba(255, 107, 53, 0.4);
}

#howto {
  counter-reset: howto-step;
}

#howto h4:hover {
  transform: translateX(6px);
  box-shadow: var(--shadow-sm);
}

#howto h4 + p {
  padding-left: 46px;
}

#contact h3 {
  padding-bottom: 10px;
  border-bottom: 2px dashed var(--border-color);
}

#contact p {
  display: flex;
  align-items: baseline;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-soft);
  margin-bottom: 0;
}

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

#contact p::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--mango-gradient);
  flex-shrink: 0;
  align-self: center;
}

#sitemap ul,
#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

#sitemap ul li a,
#links ul li a {
  display: block;
  padding: 12px 18px;
  background: var(--bg-body);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}

#sitemap ul li a::before {
  content: "▸";
  margin-right: 8px;
  color: var(--mango-primary);
  font-weight: 700;
  transition: transform var(--transition-fast);
  display: inline-block;
}

#sitemap ul li a:hover,
#links ul li a:hover {
  color: var(--mango-primary);
  background: var(--mango-gradient-soft);
  border-color: var(--border-color);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

#sitemap ul li a:hover::before {
  transform: translateX(4px);
}

#links ul li a {
  text-align: center;
  font-weight: 600;
}

#links ul li a::before {
  content: "🔗";
  margin-right: 6px;
  font-size: 0.85em;
}

#legal h2 {
  font-size: 1.3rem;
  margin-top: 28px;
  margin-bottom: 14px;
}

#legal h2:first-child {
  margin-top: 0;
}

#legal p {
  font-size: 0.94rem;
  line-height: 1.9;
}

#update {
  text-align: center;
  background: var(--mango-gradient-soft);
  border: 1px solid var(--border-color);
}

#update h2 {
  justify-content: center;
  padding-left: 0;
  text-align: center;
}

#update h2::before {
  display: none;
}

#update p {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 0 8px 10px;
  font-size: 0.88rem;
  color: var(--text-muted);
  padding: 6px 16px;
  background: var(--bg-glass-strong);
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-soft);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

#update p time {
  color: var(--mango-primary);
  font-weight: 600;
}

footer[role="contentinfo"] {
  position: relative;
  margin-top: 0;
  padding: 56px 24px 40px;
  background: linear-gradient(180deg, transparent 0%, rgba(255, 107, 53, 0.06) 100%);
  border-top: 1px solid var(--border-color);
  text-align: center;
}

footer[role="contentinfo"]::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  border-radius: var(--radius-pill);
  background: var(--mango-gradient);
  box-shadow: 0 0 20px rgba(255, 107, 53, 0.6);
}

footer[role="contentinfo"] > p {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-bottom: 8px;
}

footer[role="contentinfo"] > p:first-child {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

footer[role="contentinfo"] address {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 28px;
  font-style: normal;
}

footer[role="contentinfo"] address p {
  color: var(--text-muted);
  font-size: 0.86rem;
  margin-bottom: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: color var(--transition-fast);
}

footer[role="contentinfo"] address p:hover {
  color: var(--mango-primary);
}

footer[role="contentinfo"] address p::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--mango-primary);
  opacity: 0.6;
  flex-shrink: 0;
}

@media (max-width: 900px) {
  header[role="banner"] nav {
    gap: 16px;
    padding: 0 18px;
  }

  header[role="banner"] nav > a:first-child {
    font-size: 1.15rem;
    padding-left: 30px;
  }

  header[role="banner"] nav > a:first-child::before {
    width: 22px;
    height: 22px;
  }

  header[role="banner"] nav > a:first-child::after {
    left: 6px;
    width: 10px;
    height: 10px;
  }

  header[role="banner"] nav ul {
    gap: 2px;
  }

  header[role="banner"] nav ul li a {
    padding: 7px 10px;
    font-size: 0.84rem;
  }

  main {
    padding: 0 18px 60px;
  }

  section {
    margin-bottom: 52px;
  }

  #brand,
  #products,
  #solutions,
  #applications,
  #cases,
  #news,
  #articles,
  #knowledge,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links,
  #legal,
  #update {
    padding: 30px 22px;
    border-radius: var(--radius-md);
  }

  #hero figure {
    padding: 32px 24px 0;
  }

  #hero h1 {
    padding: 24px 24px 0;
  }

  #hero > p {
    padding: 0 24px;
  }

  #hero nav[aria-label="面包屑导航"] {
    padding: 22px 24px 28px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 60px;
  }

  body {
    font-size: 15px;
  }

  header[role="banner"] nav {
    height: auto;
    min-height: var(--header-height);
    padding: 12px 14px;
    flex-wrap: wrap;
    gap: 10px;
  }

  header[role="banner"] nav > a:first-child {
    font-size: 1.05rem;
  }

  header[role="banner"] nav ul {
    width: 100%;
    margin-left: 0;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  header[role="banner"] nav ul::-webkit-scrollbar {
    display: none;
  }

  header[role="banner"] nav ul li a {
    white-space: nowrap;
    padding: 6px 12px;
    font-size: 0.82rem;
  }

  main {
    padding: 0 14px 48px;
  }

  section {
    margin-bottom: 40px;
    scroll-margin-top: 90px;
  }

  section h2 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    padding-left: 16px;
  }

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

  section h3 {
    font-size: 1.08rem;
    margin: 24px 0 12px;
  }

  #hero {
    margin-top: 20px;
    border-radius: var(--radius-lg);
  }

  #hero figure {
    padding: 24px 16px 0;
  }

  #hero figure svg {
    border-radius: var(--radius-md);
  }

  #hero figcaption {
    font-size: 0.82rem;
    margin-top: 16px;
  }

  #hero h1 {
    font-size: 1.4rem;
    padding: 20px 16px 0;
  }

  #hero > p {
    font-size: 0.92rem;
    padding: 0 16px;
  }

  #hero nav[aria-label="面包屑导航"] {
    padding: 18px 16px 24px;
  }

  #brand,
  #products,
  #solutions,
  #applications,
  #cases,
  #news,
  #articles,
  #knowledge,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links,
  #legal,
  #update {
    padding: 24px 16px;
    border-radius: var(--radius-md);
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  #sitemap ul li a,
  #links ul li a {
    padding: 10px 12px;
    font-size: 0.84rem;
  }

  #news article,
  #articles article {
    padding: 18px 16px;
  }

  #news article h3,
  #articles article h3 {
    font-size: 1.02rem;
  }

  #cases blockquote {
    padding: 18px 16px 18px 48px;
  }

  #cases blockquote::before {
    left: 12px;
    font-size: 2.6rem;
  }

  #faq summary {
    padding: 14px 16px 14px 44px;
    font-size: 0.94rem;
  }

  #faq summary::before {
    left: 16px;
    width: 16px;
    height: 16px;
  }

  #faq summary::after {
    left: 20px;
  }

  #faq details > p {
    padding: 0 16px 16px 44px;
    font-size: 0.92rem;
  }

  #howto h4 {
    padding: 12px 14px;
    font-size: 0.98rem;
  }

  #howto h4 + p {
    padding-left: 0;
  }

  #contact p {
    font-size: 0.92rem;
  }

  #update p {
    margin: 0 4px 8px;
    padding: 5px 12px;
    font-size: 0.82rem;
  }

  footer[role="contentinfo"] {
    padding: 40px 16px 32px;
  }

  footer[role="contentinfo"] address {
    flex-direction: column;
    gap: 8px;
  }
}

@media (max-width: 380px) {
  #sitemap ul,
  #links ul {
    grid-template-columns: 1fr;
  }

  header[role="banner"] nav > a:first-child {
    font-size: 0.98rem;
  }

  #hero h1 {
    font-size: 1.25rem;
  }
}

@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"],
  #hero::after {
    display: none;
  }

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

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

@supports not ((-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))) {
  header[role="banner"] {
    background: var(--bg-body);
  }

  #update p {
    background: var(--bg-card);
  }
}

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

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

section {
  animation: fadeInUp 0.7s var(--transition-base) both;
}

#hero {
  animation: scaleIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) both;
}

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

@supports (animation-timeline: view()) {
  section {
    animation: fadeInUp 0.7s ease both;
    animation-timeline: view();
    animation-range: entry 0% entry 30%;
  }
}