:root {
  --lemon-primary: #F5C518;
  --lemon-primary-dark: #D9A900;
  --lemon-primary-light: #FFE066;
  --lemon-accent: #FF6B35;
  --lemon-accent-soft: #FF8C5A;
  --lemon-bg: #FFFDF5;
  --lemon-bg-alt: #FFF9E6;
  --lemon-surface: #FFFFFF;
  --lemon-surface-glass: rgba(255, 255, 255, 0.72);
  --lemon-surface-glass-strong: rgba(255, 255, 255, 0.88);
  --lemon-text: #1A1A1A;
  --lemon-text-secondary: #4A4A4A;
  --lemon-text-muted: #7A7A7A;
  --lemon-border: rgba(26, 26, 26, 0.08);
  --lemon-border-strong: rgba(26, 26, 26, 0.16);
  --lemon-shadow-sm: 0 2px 8px rgba(26, 26, 26, 0.06);
  --lemon-shadow: 0 8px 24px rgba(26, 26, 26, 0.08);
  --lemon-shadow-lg: 0 16px 48px rgba(26, 26, 26, 0.12);
  --lemon-shadow-glow: 0 8px 32px rgba(245, 197, 24, 0.28);
  --lemon-radius-sm: 8px;
  --lemon-radius: 16px;
  --lemon-radius-lg: 24px;
  --lemon-radius-xl: 32px;
  --lemon-radius-pill: 999px;
  --lemon-gradient-hero: linear-gradient(135deg, #FFE066 0%, #F5C518 35%, #FF8C5A 75%, #FF6B35 100%);
  --lemon-gradient-soft: linear-gradient(135deg, rgba(245, 197, 24, 0.14) 0%, rgba(255, 107, 53, 0.08) 100%);
  --lemon-gradient-card: linear-gradient(145deg, #FFFFFF 0%, #FFFDF5 100%);
  --lemon-gradient-dark: linear-gradient(135deg, #1A1A1A 0%, #2A2A2A 100%);
  --lemon-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --lemon-font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", -apple-system, sans-serif;
  --lemon-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --lemon-transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --lemon-header-height: 72px;
  --lemon-max-width: 1200px;
}

[data-theme="dark"] {
  --lemon-bg: #0F0F12;
  --lemon-bg-alt: #16161B;
  --lemon-surface: #1C1C22;
  --lemon-surface-glass: rgba(28, 28, 34, 0.72);
  --lemon-surface-glass-strong: rgba(28, 28, 34, 0.9);
  --lemon-text: #F5F5F7;
  --lemon-text-secondary: #C8C8CE;
  --lemon-text-muted: #8A8A94;
  --lemon-border: rgba(255, 255, 255, 0.08);
  --lemon-border-strong: rgba(255, 255, 255, 0.16);
  --lemon-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --lemon-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  --lemon-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --lemon-shadow-glow: 0 8px 32px rgba(245, 197, 24, 0.18);
  --lemon-gradient-hero: linear-gradient(135deg, #2A2410 0%, #3D3210 35%, #4A2A14 75%, #3D1F10 100%);
  --lemon-gradient-soft: linear-gradient(135deg, rgba(245, 197, 24, 0.08) 0%, rgba(255, 107, 53, 0.05) 100%);
  --lemon-gradient-card: linear-gradient(145deg, #1C1C22 0%, #16161B 100%);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --lemon-bg: #0F0F12;
    --lemon-bg-alt: #16161B;
    --lemon-surface: #1C1C22;
    --lemon-surface-glass: rgba(28, 28, 34, 0.72);
    --lemon-surface-glass-strong: rgba(28, 28, 34, 0.9);
    --lemon-text: #F5F5F7;
    --lemon-text-secondary: #C8C8CE;
    --lemon-text-muted: #8A8A94;
    --lemon-border: rgba(255, 255, 255, 0.08);
    --lemon-border-strong: rgba(255, 255, 255, 0.16);
    --lemon-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --lemon-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
    --lemon-shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
    --lemon-shadow-glow: 0 8px 32px rgba(245, 197, 24, 0.18);
    --lemon-gradient-hero: linear-gradient(135deg, #2A2410 0%, #3D3210 35%, #4A2A14 75%, #3D1F10 100%);
    --lemon-gradient-soft: linear-gradient(135deg, rgba(245, 197, 24, 0.08) 0%, rgba(255, 107, 53, 0.05) 100%);
    --lemon-gradient-card: linear-gradient(145deg, #1C1C22 0%, #16161B 100%);
  }
}

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

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

body {
  font-family: var(--lemon-font);
  font-size: 16px;
  line-height: 1.75;
  color: var(--lemon-text);
  background-color: var(--lemon-bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(245, 197, 24, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 40% at 95% 5%, rgba(255, 107, 53, 0.06), transparent 60%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--lemon-transition), color var(--lemon-transition);
}

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

a {
  color: var(--lemon-accent);
  text-decoration: none;
  transition: color var(--lemon-transition);
}

a:hover {
  color: var(--lemon-primary-dark);
}

ul,
ol {
  list-style: none;
}

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

input {
  font-family: inherit;
}

::selection {
  background: var(--lemon-primary);
  color: #1A1A1A;
}

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

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 9999;
  padding: 12px 24px;
  background: var(--lemon-primary);
  color: #1A1A1A;
  border-radius: var(--lemon-radius);
  font-weight: 700;
  transition: top var(--lemon-transition);
}

.skip-link:focus {
  top: 16px;
}

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

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

.header-inner {
  max-width: var(--lemon-max-width);
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--lemon-text);
  transition: transform var(--lemon-transition);
}

.logo:hover {
  transform: scale(1.04);
  color: var(--lemon-text);
}

.logo svg {
  filter: drop-shadow(0 2px 6px rgba(245, 197, 24, 0.4));
  transition: transform var(--lemon-transition-slow);
}

.logo:hover svg {
  transform: rotate(-8deg) scale(1.06);
}

.logo-text {
  font-family: var(--lemon-font-display);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(135deg, var(--lemon-primary-dark) 0%, var(--lemon-accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

#main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

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

#main-nav a {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--lemon-text-secondary);
  border-radius: var(--lemon-radius-pill);
  white-space: nowrap;
  position: relative;
  transition: color var(--lemon-transition), background var(--lemon-transition), transform var(--lemon-transition);
}

#main-nav a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: var(--lemon-primary);
  border-radius: 2px;
  transition: transform var(--lemon-transition);
}

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

#main-nav a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.search-form {
  display: flex;
  align-items: center;
  background: var(--lemon-bg-alt);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius-pill);
  padding: 4px 4px 4px 16px;
  transition: border-color var(--lemon-transition), box-shadow var(--lemon-transition), background var(--lemon-transition);
}

.search-form:focus-within {
  border-color: var(--lemon-primary);
  box-shadow: 0 0 0 4px rgba(245, 197, 24, 0.18);
  background: var(--lemon-surface);
}

.search-form input {
  width: 140px;
  border: none;
  background: transparent;
  color: var(--lemon-text);
  font-size: 0.875rem;
  padding: 6px 0;
  outline: none;
  transition: width var(--lemon-transition);
}

.search-form input::placeholder {
  color: var(--lemon-text-muted);
}

.search-form input:focus {
  width: 180px;
}

.search-form button {
  padding: 7px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #1A1A1A;
  background: linear-gradient(135deg, var(--lemon-primary-light), var(--lemon-primary));
  border-radius: var(--lemon-radius-pill);
  transition: transform var(--lemon-transition), box-shadow var(--lemon-transition), filter var(--lemon-transition);
}

.search-form button:hover {
  transform: scale(1.05);
  box-shadow: var(--lemon-shadow-glow);
  filter: brightness(1.05);
}

.search-form button:active {
  transform: scale(0.97);
}

#theme-toggle,
#menu-toggle {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  border-radius: 50%;
  background: var(--lemon-bg-alt);
  border: 1px solid var(--lemon-border);
  transition: transform var(--lemon-transition), background var(--lemon-transition), box-shadow var(--lemon-transition), border-color var(--lemon-transition);
}

#theme-toggle:hover,
#menu-toggle:hover {
  transform: rotate(15deg) scale(1.08);
  background: var(--lemon-gradient-soft);
  border-color: var(--lemon-primary);
  box-shadow: var(--lemon-shadow-sm);
}

#menu-toggle {
  display: none;
}

#menu-toggle[aria-expanded="true"] {
  background: var(--lemon-primary);
  color: #1A1A1A;
}

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

#hero {
  position: relative;
  margin: 32px 0 48px;
  border-radius: var(--lemon-radius-xl);
  overflow: hidden;
  background: var(--lemon-gradient-hero);
  box-shadow: var(--lemon-shadow-lg);
  isolation: isolate;
  animation: heroFadeIn 0.9s cubic-bezier(0.4, 0, 0.2, 1) both;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 85% 15%, rgba(255, 255, 255, 0.25), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(255, 107, 53, 0.3), transparent 50%);
  pointer-events: none;
  z-index: 1;
}

#hero::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.12) 0%, transparent 60%);
  animation: heroShine 12s linear infinite;
  pointer-events: none;
  z-index: 1;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes heroShine {
  0% {
    transform: translate(-20%, -20%) rotate(0deg);
  }
  100% {
    transform: translate(20%, 20%) rotate(360deg);
  }
}

.hero-slider {
  position: relative;
  z-index: 2;
  margin: 24px 24px 0;
  border-radius: var(--lemon-radius-lg);
  overflow: hidden;
  box-shadow: var(--lemon-shadow);
  background: #1A1A1A;
}

.hero-slider .slide {
  display: none;
  animation: slideFade 0.7s ease both;
}

.hero-slider .slide.active {
  display: block;
}

@keyframes slideFade {
  from {
    opacity: 0;
    transform: scale(1.03);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.hero-slider svg {
  width: 100%;
  height: auto;
  display: block;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 32px 40px 40px;
  color: #1A1A1A;
}

[data-theme="dark"] .hero-content {
  color: #F5F5F7;
}

.hero-content h1 {
  font-family: var(--lemon-font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  text-shadow: 0 2px 12px rgba(255, 255, 255, 0.2);
}

[data-theme="dark"] .hero-content h1 {
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.hero-content p {
  font-size: 1rem;
  line-height: 1.85;
  max-width: 820px;
  margin-bottom: 24px;
  color: rgba(26, 26, 26, 0.85);
}

[data-theme="dark"] .hero-content p {
  color: rgba(245, 245, 247, 0.85);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 700;
  color: #1A1A1A;
  background: linear-gradient(135deg, #FFFFFF 0%, #FFF9E6 100%);
  border-radius: var(--lemon-radius-pill);
  box-shadow: 0 8px 24px rgba(26, 26, 26, 0.18);
  transition: transform var(--lemon-transition), box-shadow var(--lemon-transition), background var(--lemon-transition);
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(245, 197, 24, 0.35), transparent);
  transition: left 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 14px 36px rgba(26, 26, 26, 0.28);
  color: #1A1A1A;
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:active {
  transform: translateY(-1px) scale(0.99);
}

#breadcrumb {
  margin: 0 0 32px;
  padding: 12px 20px;
  background: var(--lemon-surface-glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius);
  box-shadow: var(--lemon-shadow-sm);
}

#breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--lemon-text-muted);
}

#breadcrumb li {
  display: flex;
  align-items: center;
  gap: 8px;
}

#breadcrumb li:not(:last-child)::after {
  content: "›";
  color: var(--lemon-text-muted);
  font-size: 1.1rem;
  line-height: 1;
}

#breadcrumb a {
  color: var(--lemon-text-secondary);
  font-weight: 500;
  transition: color var(--lemon-transition);
}

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

#breadcrumb li[aria-current="page"] {
  color: var(--lemon-accent);
  font-weight: 600;
}

#anchor-nav {
  position: relative;
  margin: 0 0 48px;
  padding: 24px 28px;
  background: var(--lemon-surface-glass);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius-lg);
  box-shadow: var(--lemon-shadow);
  overflow: hidden;
}

#anchor-nav::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--lemon-primary), var(--lemon-accent));
}

#anchor-nav h2 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--lemon-text);
  display: flex;
  align-items: center;
  gap: 8px;
}

#anchor-nav h2::before {
  content: "";
  width: 4px;
  height: 18px;
  background: linear-gradient(180deg, var(--lemon-primary), var(--lemon-accent));
  border-radius: 2px;
}

#anchor-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#anchor-nav a {
  display: inline-block;
  padding: 7px 16px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--lemon-text-secondary);
  background: var(--lemon-bg-alt);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius-pill);
  transition: all var(--lemon-transition);
}

#anchor-nav a:hover {
  color: #1A1A1A;
  background: linear-gradient(135deg, var(--lemon-primary-light), var(--lemon-primary));
  border-color: var(--lemon-primary);
  transform: translateY(-2px);
  box-shadow: var(--lemon-shadow-glow);
}

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

section[id] > h2 {
  position: relative;
  font-family: var(--lemon-font-display);
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  font-weight: 800;
  line-height: 1.35;
  color: var(--lemon-text);
  margin-bottom: 24px;
  padding-left: 20px;
  letter-spacing: -0.01em;
}

section[id] > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 1.2em;
  background: linear-gradient(180deg, var(--lemon-primary), var(--lemon-accent));
  border-radius: 3px;
}

section[id] > h2::after {
  content: "";
  position: absolute;
  left: 20px;
  bottom: -8px;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--lemon-primary), transparent);
  border-radius: 2px;
}

section[id] > h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--lemon-text);
  margin: 28px 0 12px;
  padding-left: 14px;
  border-left: 3px solid var(--lemon-primary);
  line-height: 1.4;
}

section[id] > p {
  font-size: 0.975rem;
  line-height: 1.9;
  color: var(--lemon-text-secondary);
  margin-bottom: 16px;
  text-align: justify;
}

#about,
#history,
#culture,
#products,
#advantages,
#solutions,
#applications,
#cases,
#testimonials,
#news,
#articles,
#knowledge,
#howto,
#faq,
#contact,
#sitemap,
#links {
  padding: 32px 36px;
  background: var(--lemon-surface-glass);
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius-lg);
  box-shadow: var(--lemon-shadow);
  transition: box-shadow var(--lemon-transition), transform var(--lemon-transition), border-color var(--lemon-transition);
  position: relative;
  overflow: hidden;
}

#about::before,
#history::before,
#culture::before,
#products::before,
#advantages::before,
#solutions::before,
#applications::before,
#cases::before,
#testimonials::before,
#news::before,
#articles::before,
#knowledge::before,
#howto::before,
#faq::before,
#contact::before,
#sitemap::before,
#links::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(245, 197, 24, 0.5), transparent);
  opacity: 0;
  transition: opacity var(--lemon-transition);
}

#about:hover::before,
#history:hover::before,
#culture:hover::before,
#products:hover::before,
#advantages:hover::before,
#solutions:hover::before,
#applications:hover::before,
#cases:hover::before,
#testimonials:hover::before,
#news:hover::before,
#articles:hover::before,
#knowledge:hover::before,
#howto:hover::before,
#faq:hover::before,
#contact:hover::before,
#sitemap:hover::before,
#links:hover::before {
  opacity: 1;
}

#about:hover,
#history:hover,
#culture:hover,
#products:hover,
#advantages:hover,
#solutions:hover,
#applications:hover,
#cases:hover,
#testimonials:hover,
#news:hover,
#articles:hover,
#knowledge:hover,
#howto:hover,
#faq:hover,
#contact:hover,
#sitemap:hover,
#links:hover {
  box-shadow: var(--lemon-shadow-lg);
  border-color: var(--lemon-border-strong);
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s cubic-bezier(0.4, 0, 0.2, 1), transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

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

.reveal-delay-1 { transition-delay: 0.08s; }
.reveal-delay-2 { transition-delay: 0.16s; }
.reveal-delay-3 { transition-delay: 0.24s; }
.reveal-delay-4 { transition-delay: 0.32s; }

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

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--lemon-primary), var(--lemon-accent));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--lemon-transition);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  box-shadow: var(--lemon-shadow);
  border-color: rgba(245, 197, 24, 0.4);
}

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

#news article h3,
#articles article h3 {
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--lemon-text);
  margin-bottom: 8px;
  border: none;
  padding: 0;
  transition: color var(--lemon-transition);
}

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

#news article time,
#articles article time {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--lemon-text-muted);
  background: var(--lemon-bg-alt);
  padding: 3px 12px;
  border-radius: var(--lemon-radius-pill);
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

#news article time::before,
#articles article time::before {
  content: "📅";
  font-size: 0.75rem;
}

#news article p,
#articles article p {
  font-size: 0.925rem;
  line-height: 1.85;
  color: var(--lemon-text-secondary);
  margin-bottom: 12px;
  text-align: justify;
}

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

#articles article p a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--lemon-accent);
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: border-color var(--lemon-transition), gap var(--lemon-transition);
}

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

#articles article p a:hover {
  border-bottom-color: var(--lemon-accent);
  gap: 8px;
}

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

#testimonials blockquote {
  position: relative;
  padding: 24px 28px 24px 56px;
  margin-bottom: 16px;
  background: var(--lemon-gradient-card);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius);
  box-shadow: var(--lemon-shadow-sm);
  transition: transform var(--lemon-transition), box-shadow var(--lemon-transition), border-color var(--lemon-transition);
}

#testimonials blockquote::before {
  content: "\201C";
  position: absolute;
  top: 8px;
  left: 18px;
  font-size: 3rem;
  line-height: 1;
  font-family: Georgia, serif;
  color: var(--lemon-primary);
  opacity: 0.7;
  transition: transform var(--lemon-transition), opacity var(--lemon-transition);
}

#testimonials blockquote:hover {
  transform: translateX(6px);
  box-shadow: var(--lemon-shadow);
  border-color: rgba(245, 197, 24, 0.4);
}

#testimonials blockquote:hover::before {
  transform: scale(1.15);
  opacity: 1;
}

#testimonials blockquote p {
  font-size: 0.95rem;
  line-height: 1.85;
  color: var(--lemon-text-secondary);
  font-style: italic;
  margin: 0;
}

#howto ol {
  counter-reset: howto-counter;
  margin: 16px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

#howto ol li {
  counter-increment: howto-counter;
  position: relative;
  padding: 16px 20px 16px 60px;
  background: var(--lemon-gradient-card);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius);
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--lemon-text-secondary);
  transition: transform var(--lemon-transition), box-shadow var(--lemon-transition), border-color var(--lemon-transition);
}

#howto ol li::before {
  content: counter(howto-counter);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 800;
  color: #1A1A1A;
  background: linear-gradient(135deg, var(--lemon-primary-light), var(--lemon-primary));
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(245, 197, 24, 0.35);
  transition: transform var(--lemon-transition);
}

#howto ol li:hover {
  transform: translateX(6px);
  box-shadow: var(--lemon-shadow-sm);
  border-color: rgba(245, 197, 24, 0.4);
}

#howto ol li:hover::before {
  transform: translateY(-50%) scale(1.12);
}

#faq details {
  margin-bottom: 12px;
  background: var(--lemon-gradient-card);
  border: 1px solid var(--lemon-border);
  border-radius: var(--lemon-radius);
  box-shadow: var(--lemon-shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--lemon-transition), border-color var(--lemon-transition), transform var(--lemon-transition);
}

#faq details:hover {
  border-color: rgba(245, 197, 24, 0.4);
  box-shadow: var(--lemon-shadow);
}

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

#faq summary {
  position: relative;
  padding: 18px 56px 18px 24px;
  font-size: 0.975rem;
  font-weight: 600;
  color: var(--lemon-text);
  cursor: pointer;
  list-style: none;
  transition: color var(--lemon-transition), background var(--lemon-transition);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 400;
  color: #1A1A1A;
  background: linear-gradient(135deg, var(--lemon-primary-light), var(--lemon-primary));
  border-radius: 50%;
  transition: transform var(--lemon-transition), background var(--lemon-transition);
}

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

#faq details[open] summary::after {
  content: "−";
  transform: translateY(-50%) rotate(180deg);
  background: linear-gradient(135deg, var(--lemon-accent-soft), var(--lemon-accent));
  color: #FFFFFF;
}

#faq details[open] summary {
  color: var(--lemon-accent);
  border-bottom: 1px solid var(--lemon-border);
}

#faq details p {
  padding: 18px 24px 22px;
  font-size: 0.925rem;
  line-height: 1.9;
  color: var(--lemon-text-secondary);
  margin: 0;
  animation: faqSlideDown 0.35s ease both;
  text-align: justify;
}

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

#contact p {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--lemon-text-secondary);
  margin-bottom: 10px;
  padding-left: 4px;
}

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

#sitemap ul,
#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
  margin-top: 8px;
}

#sitemap li,
#links li {
  margin: 0;
}

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

#sitemap a::before,
#links a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--lemon-primary);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--lemon-transition);
}

#sitemap a:hover,
#links a:hover {
  color: var(--lemon-text);
  background: var(--lemon-surface);
  border-color: var(--lemon-primary);
  transform: translateX(4px);
  box-shadow: var(--lemon-shadow-sm);
}

#sitemap a:hover::before,
#links a:hover::before {
  transform: scaleY(1);
}

#site-footer {
  position: relative;
  margin-top: 40px;
  background: var(--lemon-gradient-dark);
  color: #E8E8EC;
  overflow: hidden;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--lemon-primary), var(--lemon-accent), var(--lemon-primary));
  background-size: 200% 100%;
  animation: footerGradient 6s linear infinite;
}

@keyframes footerGradient {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.footer-inner {
  max-width: var(--lemon-max-width);
  margin: 0 auto;
  padding: 56px 24px 32px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: 40px;
}

.footer-inner h2 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--lemon-primary);
  margin-bottom: 16px;
  position: relative;
  padding-bottom: 10px;
}

.footer-inner h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  background: linear-gradient(90deg, var(--lemon-primary), transparent);
  border-radius: 1px;
}

.footer-about p {
  font-size: 0.875rem;
  line-height: 1.85;
  color: rgba(232, 232, 236, 0.72);
  margin-bottom: 0;
}

.footer-links ul,
.footer-legal ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a,
.footer-legal a {
  font-size: 0.875rem;
  color: rgba(232, 232, 236, 0.72);
  display: inline-block;
  position: relative;
  padding-left: 0;
  transition: color var(--lemon-transition), padding-left var(--lemon-transition);
}

.footer-links a::before,
.footer-legal a::before {
  content: "›";
  position: absolute;
  left: -12px;
  opacity: 0;
  color: var(--lemon-primary);
  transition: opacity var(--lemon-transition), left var(--lemon-transition);
}

.footer-links a:hover,
.footer-legal a:hover {
  color: var(--lemon-primary);
  padding-left: 10px;
}

.footer-links a:hover::before,
.footer-legal a:hover::before {
  opacity: 1;
  left: 0;
}

.footer-contact p {
  font-size: 0.875rem;
  line-height: 1.85;
  color: rgba(232, 232, 236, 0.72);
  margin-bottom: 8px;
  transition: color var(--lemon-transition);
}

.footer-contact p:hover {
  color: var(--lemon-primary);
}

.footer-bottom {
  max-width: var(--lemon-max-width);
  margin: 0 auto;
  padding: 24px 24px 40px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
  font-size: 0.8rem;
  line-height: 1.8;
  color: rgba(232, 232, 236, 0.55);
  margin-bottom: 10px;
  text-align: justify;
}

.footer-bottom p:last-child {
  margin-bottom: 0;
  text-align: center;
  color: rgba(232, 232, 236, 0.4);
  font-size: 0.78rem;
  padding-top: 8px;
}

#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  color: #1A1A1A;
  background: linear-gradient(135deg, var(--lemon-primary-light), var(--lemon-primary));
  border-radius: 50%;
  box-shadow: var(--lemon-shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: opacity var(--lemon-transition), visibility var(--lemon-transition), transform var(--lemon-transition), box-shadow var(--lemon-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(245, 197, 24, 0.5);
}

#back-to-top:active {
  transform: translateY(-2px) scale(0.98);
}

@media (max-width: 1080px) {
  .header-inner {
    gap: 16px;
  }

  #main-nav a {
    padding: 8px 10px;
    font-size: 0.85rem;
  }

  .search-form input {
    width: 110px;
  }

  .search-form input:focus {
    width: 140px;
  }

  .footer-inner {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 900px) {
  :root {
    --lemon-header-height: 64px;
  }

  #main-nav {
    position: fixed;
    top: var(--lemon-header-height);
    left: 0;
    right: 0;
    z-index: 999;
    background: var(--lemon-surface-glass-strong);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--lemon-border);
    box-shadow: var(--lemon-shadow);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity var(--lemon-transition), visibility var(--lemon-transition);
    justify-content: flex-start;
  }

  #main-nav.open {
    max-height: 480px;
    overflow-y: auto;
    opacity: 1;
    visibility: visible;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 12px 16px 20px;
    width: 100%;
  }

  #main-nav a {
    padding: 14px 18px;
    font-size: 0.95rem;
    border-radius: var(--lemon-radius-sm);
    border-bottom: 1px solid var(--lemon-border);
  }

  #main-nav a::after {
    display: none;
  }

  #main-nav li:last-child a {
    border-bottom: none;
  }

  #menu-toggle {
    display: flex;
  }

  .search-form {
    display: none;
  }

  #hero {
    margin: 20px 0 36px;
    border-radius: var(--lemon-radius-lg);
  }

  .hero-slider {
    margin: 16px 16px 0;
    border-radius: var(--lemon-radius);
  }

  .hero-content {
    padding: 24px 24px 32px;
  }

  #about,
  #history,
  #culture,
  #products,
  #advantages,
  #solutions,
  #applications,
  #cases,
  #testimonials,
  #news,
  #articles,
  #knowledge,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links {
    padding: 24px 20px;
    border-radius: var(--lemon-radius);
  }

  #anchor-nav {
    padding: 20px;
    border-radius: var(--lemon-radius);
  }

  section[id] {
    margin-bottom: 40px;
  }

  section[id] > h2 {
    font-size: 1.35rem;
    padding-left: 16px;
  }

  section[id] > h2::after {
    left: 16px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
    line-height: 1.7;
  }

  main {
    padding: 0 16px 56px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 10px;
  }

  .logo-text {
    font-size: 1.05rem;
  }

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

  #theme-toggle,
  #menu-toggle {
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  #hero {
    margin: 16px 0 28px;
  }

  .hero-content {
    padding: 20px 18px 26px;
  }

  .hero-content h1 {
    font-size: 1.35rem;
    margin-bottom: 12px;
  }

  .hero-content p {
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 18px;
  }

  .btn-primary {
    padding: 12px 24px;
    font-size: 0.9rem;
    width: 100%;
    justify-content: center;
  }

  #breadcrumb {
    padding: 10px 14px;
    margin-bottom: 24px;
  }

  #breadcrumb ol {
    font-size: 0.8rem;
  }

  #anchor-nav {
    padding: 16px;
    margin-bottom: 32px;
  }

  #anchor-nav ul {
    gap: 8px;
  }

  #anchor-nav a {
    padding: 6px 12px;
    font-size: 0.78rem;
  }

  section[id] {
    margin-bottom: 32px;
  }

  section[id] > h2 {
    font-size: 1.2rem;
    margin-bottom: 18px;
  }

  section[id] > h3 {
    font-size: 1.02rem;
    margin: 22px 0 10px;
  }

  section[id] > p {
    font-size: 0.9rem;
    line-height: 1.85;
  }

  #about,
  #history,
  #culture,
  #products,
  #advantages,
  #solutions,
  #applications,
  #cases,
  #testimonials,
  #news,
  #articles,
  #knowledge,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links {
    padding: 20px 16px;
  }

  #news article,
  #articles article {
    padding: 18px 18px;
    margin-bottom: 14px;
  }

  #news article h3,
  #articles article h3 {
    font-size: 1rem;
  }

  #news article p,
  #articles article p {
    font-size: 0.875rem;
  }

  #testimonials blockquote {
    padding: 20px 20px 20px 48px;
  }

  #testimonials blockquote::before {
    font-size: 2.4rem;
    left: 12px;
    top: 6px;
  }

  #testimonials blockquote p {
    font-size: 0.875rem;
  }

  #howto ol li {
    padding: 14px 16px 14px 52px;
    font-size: 0.875rem;
  }

  #howto ol li::before {
    left: 14px;
    width: 26px;
    height: 26px;
    font-size: 0.78rem;
  }

  #faq summary {
    padding: 15px 48px 15px 18px;
    font-size: 0.9rem;
  }

  #faq summary::after {
    right: 14px;
    width: 24px;
    height: 24px;
    font-size: 1.1rem;
  }

  #faq details p {
    padding: 14px 18px 18px;
    font-size: 0.875rem;
  }

  #contact p {
    font-size: 0.875rem;
  }

  #sitemap ul,
  #links ul {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 8px;
  }

  #sitemap a,
  #links a {
    padding: 9px 12px;
    font-size: 0.8rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding: 40px 16px 24px;
  }

  .footer-bottom {
    padding: 20px 16px 32px;
  }

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

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 46px;
    height: 46px;
    font-size: 1.2rem;
  }
}

@media (max-width: 380px) {
  .logo-text {
    display: none;
  }

  .hero-content h1 {
    font-size: 1.2rem;
  }

  #anchor-nav a {
    font-size: 0.74rem;
    padding: 5px 10px;
  }
}

@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;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

@media print {
  #site-header,
  #anchor-nav,
  #back-to-top,
  #site-footer,
  #breadcrumb,
  .hero-slider {
    display: none !important;
  }

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

  main {
    max-width: 100%;
    padding: 0;
  }

  section[id] {
    box-shadow: none;
    border: 1px solid #DDD;
    page-break-inside: avoid;
  }

  a {
    color: #000000;
    text-decoration: underline;
  }
}