:root {
  --color-primary: #8B5A2B;
  --color-primary-light: #A0693A;
  --color-primary-dark: #6B4420;
  --color-accent: #D4A574;
  --color-accent-light: #E8C9A8;
  --color-bg: #FDF8F3;
  --color-bg-alt: #F5EDE3;
  --color-surface: #FFFFFF;
  --color-surface-glass: rgba(255, 255, 255, 0.72);
  --color-text: #2C2418;
  --color-text-secondary: #6B5E4E;
  --color-text-muted: #9B8E7E;
  --color-border: #E5D9CB;
  --color-border-light: #F0E8DD;
  --color-shadow: rgba(139, 90, 43, 0.08);
  --color-shadow-md: rgba(139, 90, 43, 0.12);
  --color-shadow-lg: rgba(139, 90, 43, 0.18);
  --gradient-hero: linear-gradient(135deg, #8B5A2B 0%, #A0693A 30%, #C4884E 60%, #D4A574 100%);
  --gradient-hero-overlay: linear-gradient(135deg, rgba(107, 68, 32, 0.92) 0%, rgba(139, 90, 43, 0.85) 40%, rgba(164, 105, 58, 0.78) 70%, rgba(212, 165, 116, 0.65) 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(253, 248, 243, 0.7));
  --gradient-accent: linear-gradient(135deg, #D4A574, #E8C9A8);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", Georgia, 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;
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-primary: #C4884E;
    --color-primary-light: #D4A574;
    --color-primary-dark: #A0693A;
    --color-accent: #D4A574;
    --color-accent-light: #E8C9A8;
    --color-bg: #1A1510;
    --color-bg-alt: #221C15;
    --color-surface: #2A231B;
    --color-surface-glass: rgba(42, 35, 27, 0.78);
    --color-text: #EDE5DA;
    --color-text-secondary: #BFB3A3;
    --color-text-muted: #8A7D6E;
    --color-border: #3D3428;
    --color-border-light: #332B21;
    --color-shadow: rgba(0, 0, 0, 0.25);
    --color-shadow-md: rgba(0, 0, 0, 0.35);
    --color-shadow-lg: rgba(0, 0, 0, 0.5);
    --gradient-hero: linear-gradient(135deg, #3D2A18 0%, #4A3520 30%, #5C4228 60%, #6B4E30 100%);
    --gradient-hero-overlay: linear-gradient(135deg, rgba(26, 21, 16, 0.95) 0%, rgba(42, 35, 27, 0.9) 40%, rgba(61, 42, 24, 0.82) 70%, rgba(92, 66, 40, 0.7) 100%);
    --gradient-card: linear-gradient(145deg, rgba(42, 35, 27, 0.92), rgba(34, 28, 21, 0.75));
  }
}

*,
*::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(--color-text);
  background-color: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.35;
  color: var(--color-text);
  letter-spacing: 0.01em;
}

h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: clamp(1.4rem, 3vw, 2rem);
  margin-bottom: var(--space-lg);
  position: relative;
  padding-bottom: var(--space-md);
}

h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 56px;
  height: 3px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-slow);
}

h3 {
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  margin-bottom: var(--space-md);
  margin-top: var(--space-xl);
}

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-secondary);
}

blockquote {
  margin: var(--space-lg) 0;
  padding: var(--space-lg) var(--space-xl);
  background: var(--gradient-card);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 2px 12px var(--color-shadow);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

blockquote:hover {
  transform: translateX(6px);
  box-shadow: 0 6px 24px var(--color-shadow-md);
}

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

blockquote p::before {
  content: "\201C";
  font-size: 2em;
  color: var(--color-accent);
  line-height: 0;
  vertical-align: -0.35em;
  margin-right: 4px;
}

blockquote p::after {
  content: "\201D";
  font-size: 2em;
  color: var(--color-accent);
  line-height: 0;
  vertical-align: -0.35em;
  margin-left: 4px;
}

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-surface-glass);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

header:hover {
  box-shadow: 0 4px 30px var(--color-shadow-md);
}

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

header nav > a:first-child {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.06em;
  white-space: nowrap;
  position: relative;
  transition: color var(--transition-fast);
}

header nav > a:first-child::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

header nav > a:first-child:hover::after {
  width: 100%;
}

header nav ul {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

header nav ul li a {
  display: inline-block;
  padding: 6px 12px;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  border-radius: var(--radius-full);
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
}

header nav ul li a:hover {
  color: var(--color-primary);
  background: rgba(139, 90, 43, 0.08);
  transform: translateY(-1px);
}

@media (prefers-color-scheme: dark) {
  header nav ul li a:hover {
    background: rgba(196, 136, 78, 0.12);
  }
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

main > nav[aria-label="面包屑导航"] {
  padding: var(--space-lg) 0 var(--space-sm);
}

main > nav[aria-label="面包屑导航"] ol {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

main > nav[aria-label="面包屑导航"] ol li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

main > nav[aria-label="面包屑导航"] ol li + li::before {
  content: "/";
  color: var(--color-border);
  font-weight: 300;
}

main > nav[aria-label="面包屑导航"] ol li a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

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

main > section {
  margin-bottom: var(--space-2xl);
  animation: fadeInUp 0.7s ease-out both;
}

main > section:nth-child(2) { animation-delay: 0.05s; }
main > section:nth-child(3) { animation-delay: 0.1s; }
main > section:nth-child(4) { animation-delay: 0.15s; }
main > section:nth-child(5) { animation-delay: 0.2s; }
main > section:nth-child(6) { animation-delay: 0.25s; }
main > section:nth-child(7) { animation-delay: 0.3s; }
main > section:nth-child(8) { animation-delay: 0.35s; }
main > section:nth-child(9) { animation-delay: 0.4s; }
main > section:nth-child(10) { animation-delay: 0.45s; }

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(139, 90, 43, 0.2); }
  50% { box-shadow: 0 0 0 12px rgba(139, 90, 43, 0); }
}

section[aria-labelledby="hero-title"] {
  position: relative;
  margin: 0 calc(-1 * var(--space-lg)) var(--space-2xl);
  padding: var(--space-3xl) var(--space-lg) var(--space-2xl);
  background: var(--gradient-hero);
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  overflow: hidden;
  color: #fff;
  isolation: isolate;
}

section[aria-labelledby="hero-title"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--gradient-hero-overlay);
  z-index: -1;
}

section[aria-labelledby="hero-title"]::after {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(212, 165, 116, 0.25) 0%, transparent 70%);
  border-radius: 50%;
  z-index: -1;
  animation: float 8s ease-in-out infinite;
}

section[aria-labelledby="hero-title"] h1 {
  color: #fff;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
  max-width: 800px;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease-out 0.1s both;
}

section[aria-labelledby="hero-title"] p {
  color: rgba(255, 255, 255, 0.88);
  max-width: 780px;
  font-size: 1.05rem;
  line-height: 1.85;
  position: relative;
  z-index: 1;
  animation: fadeInUp 0.8s ease-out 0.25s both;
}

section[aria-labelledby="hero-title"] p:last-child {
  display: inline-block;
  margin-top: var(--space-md);
  padding: 10px 24px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: rgba(255, 255, 255, 0.95);
  animation: fadeInUp 0.8s ease-out 0.4s both;
  transition: background var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

section[aria-labelledby="hero-title"] p:last-child:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

section:not([aria-labelledby="hero-title"]) {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-xl) var(--space-2xl);
  box-shadow: 0 1px 3px var(--color-shadow), 0 8px 32px var(--color-shadow);
  border: 1px solid var(--color-border-light);
  transition: box-shadow var(--transition-base), transform var(--transition-base), background var(--transition-base);
  position: relative;
  overflow: hidden;
}

section:not([aria-labelledby="hero-title"])::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

section:not([aria-labelledby="hero-title"]):hover {
  box-shadow: 0 4px 12px var(--color-shadow-md), 0 16px 48px var(--color-shadow-lg);
  transform: translateY(-3px);
}

section:not([aria-labelledby="hero-title"]):hover::before {
  opacity: 1;
}

section:not([aria-labelledby="hero-title"]):hover h2::after {
  width: 80px;
}

section[id="about"] {
  background: var(--gradient-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

section[id="products"] ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

section[id="products"] ul li {
  position: relative;
  padding: var(--space-lg) var(--space-lg) var(--space-lg) var(--space-xl);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
  overflow: hidden;
}

section[id="products"] ul li::before {
  content: "";
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--gradient-accent);
  border-radius: 50%;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

section[id="products"] ul li:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 8px 28px var(--color-shadow-md);
  background: var(--color-surface);
  border-color: var(--color-accent);
}

section[id="products"] ul li:hover::before {
  transform: translateY(-50%) scale(1.4);
  box-shadow: 0 0 0 6px rgba(139, 90, 43, 0.12);
}

section[id="cases"] blockquote {
  background: var(--gradient-card);
  border-left-color: var(--color-accent);
}

section[id="cases"] blockquote p {
  font-size: 0.95rem;
}

section[id="news"] ul {
  display: grid;
  gap: var(--space-lg);
}

section[id="news"] ul li {
  padding: var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

section[id="news"] ul li::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--gradient-accent);
  border-radius: 0 var(--radius-full) var(--radius-full) 0;
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform var(--transition-base);
}

section[id="news"] ul li:hover {
  transform: translateX(8px);
  box-shadow: 0 6px 24px var(--color-shadow-md);
  background: var(--color-surface);
  border-color: var(--color-accent);
}

section[id="news"] ul li:hover::after {
  transform: scaleY(1);
}

section[id="news"] ul li h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
  color: var(--color-text);
}

section[id="news"] ul li p {
  margin-bottom: var(--space-xs);
  font-size: 0.85rem;
}

section[id="news"] ul li p:first-of-type {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.02em;
}

section[id="articles"] {
  display: grid;
  gap: var(--space-lg);
}

section[id="articles"] > h2 {
  grid-column: 1 / -1;
}

section[id="articles"] article {
  padding: var(--space-lg) var(--space-xl);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
  position: relative;
  overflow: hidden;
}

section[id="articles"] article::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -30%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(212, 165, 116, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-slow);
}

section[id="articles"] article:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 36px var(--color-shadow-lg);
  background: var(--color-surface);
  border-color: var(--color-accent);
}

section[id="articles"] article:hover::before {
  opacity: 1;
}

section[id="articles"] article h3 {
  margin-top: 0;
  margin-bottom: var(--space-sm);
  font-size: 1.1rem;
  transition: color var(--transition-fast);
}

section[id="articles"] article:hover h3 {
  color: var(--color-primary);
}

section[id="articles"] article p {
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

section[id="articles"] article p:first-of-type {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 500;
}

section[id="articles"] article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-primary);
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast), gap var(--transition-fast);
}

section[id="articles"] article a::after {
  content: "→";
  transition: transform var(--transition-fast);
}

section[id="articles"] article a:hover {
  color: var(--color-primary-light);
  gap: 10px;
}

section[id="articles"] article a:hover::after {
  transform: translateX(4px);
}

section[id="faq"] h3 {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border-left: 3px solid var(--color-accent);
  margin-top: var(--space-lg);
  margin-bottom: 0;
  font-size: 1rem;
  cursor: default;
  transition: background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
}

section[id="faq"] h3 + p {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  border-left: 3px solid var(--color-accent);
  margin-bottom: var(--space-sm);
  font-size: 0.9rem;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

section[id="faq"] h3:hover {
  background: var(--color-surface);
  border-left-color: var(--color-primary);
  color: var(--color-primary);
}

section[id="faq"] h3:hover + p {
  background: var(--color-surface);
}

section[id="howto"] ol,
section[id="howto"] ul {
  counter-reset: step-counter;
  display: grid;
  gap: var(--space-sm);
  margin: var(--space-md) 0 var(--space-lg);
}

section[id="howto"] ol li {
  counter-increment: step-counter;
  position: relative;
  padding: var(--space-md) var(--space-lg) var(--space-md) calc(var(--space-2xl) + var(--space-md));
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

section[id="howto"] ol li::before {
  content: counter(step-counter);
  position: absolute;
  left: var(--space-md);
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(139, 90, 43, 0.25);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

section[id="howto"] ol li:hover {
  transform: translateX(6px);
  box-shadow: 0 6px 20px var(--color-shadow-md);
  background: var(--color-surface);
  border-color: var(--color-accent);
}

section[id="howto"] ol li:hover::before {
  transform: translateY(-50%) scale(1.12);
  box-shadow: 0 4px 16px rgba(139, 90, 43, 0.4);
}

section[id="howto"] ul li {
  position: relative;
  padding: var(--space-sm) var(--space-md) var(--space-sm) var(--space-xl);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

section[id="howto"] ul li::before {
  content: "✓";
  position: absolute;
  left: var(--space-md);
  color: var(--color-accent);
  font-weight: 700;
  transition: transform var(--transition-fast);
}

section[id="howto"] ul li:hover {
  color: var(--color-text);
  transform: translateX(4px);
}

section[id="howto"] ul li:hover::before {
  transform: scale(1.3);
}

section[id="contact"] ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

section[id="contact"] ul li {
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), border-color var(--transition-base);
}

section[id="contact"] ul li:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--color-shadow-md);
  background: var(--color-surface);
  border-color: var(--color-accent);
}

section[id="contact"] ul li a {
  font-weight: 600;
}

section[id="sitemap"] ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--space-sm);
  margin-top: var(--space-md);
}

section[id="sitemap"] ul li a {
  display: block;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  text-align: center;
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

section[id="sitemap"] ul li a:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 6px 20px var(--color-shadow-md);
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

section[id="links"] ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  margin-top: var(--space-md);
}

section[id="links"] ul li a {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  background: var(--color-bg-alt);
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-light);
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base), border-color var(--transition-base);
}

section[id="links"] ul li a:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px var(--color-shadow-md);
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
}

section[id="legal"] h3 {
  margin-top: var(--space-xl);
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-accent);
  font-size: 1.05rem;
}

section[id="legal"] p {
  font-size: 0.9rem;
  padding-left: var(--space-md);
}

footer {
  margin-top: var(--space-3xl);
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border-light);
  text-align: center;
  position: relative;
  overflow: hidden;
}

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

footer p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

footer p:first-child {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  font-weight: 600;
}

footer p:nth-child(2) {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
}

footer p:nth-child(3),
footer p:nth-child(4) {
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

footer address {
  margin-top: var(--space-md);
  font-style: normal;
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

footer address a {
  color: var(--color-primary);
  font-weight: 600;
  transition: color var(--transition-fast), text-decoration var(--transition-fast);
}

footer address a:hover {
  color: var(--color-primary-light);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 900px) {
  :root {
    --header-height: 60px;
  }

  header nav {
    padding: 0 var(--space-md);
    gap: var(--space-md);
  }

  header nav > a:first-child {
    font-size: 1.15rem;
  }

  header nav ul {
    gap: 2px;
  }

  header nav ul li a {
    padding: 5px 8px;
    font-size: 0.78rem;
  }

  main {
    padding: 0 var(--space-md);
  }

  section[aria-labelledby="hero-title"] {
    margin: 0 calc(-1 * var(--space-md)) var(--space-xl);
    padding: var(--space-2xl) var(--space-md) var(--space-xl);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  }

  section:not([aria-labelledby="hero-title"]) {
    padding: var(--space-lg) var(--space-lg) var(--space-xl);
    border-radius: var(--radius-md);
  }

  section[id="products"] ul {
    grid-template-columns: 1fr;
  }

  section[id="contact"] ul {
    grid-template-columns: 1fr;
  }

  section[id="sitemap"] ul {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  }

  section[id="howto"] ol li {
    padding-left: calc(var(--space-2xl) + var(--space-sm));
  }

  blockquote {
    padding: var(--space-md) var(--space-lg);
  }
}

@media (max-width: 600px) {
  body {
    font-size: 15px;
  }

  header nav {
    flex-direction: column;
    height: auto;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }

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

  header nav ul li a {
    padding: 4px 8px;
    font-size: 0.75rem;
  }

  :root {
    --header-height: 100px;
  }

  section[aria-labelledby="hero-title"] {
    padding: var(--space-xl) var(--space-md) var(--space-lg);
  }

  section[aria-labelledby="hero-title"] h1 {
    font-size: 1.5rem;
  }

  section[aria-labelledby="hero-title"] p {
    font-size: 0.92rem;
  }

  section:not([aria-labelledby="hero-title"]) {
    padding: var(--space-md) var(--space-md) var(--space-lg);
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1rem;
  }

  section[id="articles"] article {
    padding: var(--space-md) var(--space-lg);
  }

  section[id="faq"] h3 {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.92rem;
  }

  section[id="faq"] h3 + p {
    padding: var(--space-sm) var(--space-md) var(--space-md);
    font-size: 0.85rem;
  }

  section[id="howto"] ol li {
    padding: var(--space-sm) var(--space-md) var(--space-sm) calc(var(--space-2xl) + var(--space-xs));
    font-size: 0.88rem;
  }

  section[id="howto"] ol li::before {
    width: 26px;
    height: 26px;
    font-size: 0.75rem;
    left: var(--space-sm);
  }

  section[id="sitemap"] ul {
    grid-template-columns: repeat(2, 1fr);
  }

  section[id="links"] ul {
    flex-direction: column;
  }

  section[id="links"] ul li a {
    text-align: center;
  }

  blockquote {
    padding: var(--space-sm) var(--space-md);
  }

  blockquote p {
    font-size: 0.88rem;
  }

  footer {
    padding: var(--space-xl) var(--space-md);
  }
}

@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;
  }
}

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

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

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

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
  border: 2px solid var(--color-bg-alt);
  transition: background var(--transition-fast);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

@media (prefers-color-scheme: dark) {
  ::-webkit-scrollbar-track {
    background: var(--color-bg);
  }

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

  ::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent);
  }
}