:root {
  --primary: #e94560;
  --primary-light: #ff6b81;
  --primary-dark: #c23152;
  --secondary: #533483;
  --secondary-light: #7b5ea7;
  --accent: #0f3460;
  --accent-light: #1a5276;
  --bg-body: #f5f5fa;
  --bg-card: #ffffff;
  --bg-card-hover: #fafaff;
  --bg-header: rgba(255, 255, 255, 0.82);
  --bg-footer: #1a1a2e;
  --bg-hero-start: #1a1a2e;
  --bg-hero-mid: #16213e;
  --bg-hero-end: #0f3460;
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8888a8;
  --text-on-dark: #eaeaf0;
  --text-on-dark-muted: #a0a0c0;
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-strong: rgba(0, 0, 0, 0.14);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow-md: 0 6px 24px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 12px 48px rgba(26, 26, 46, 0.16);
  --shadow-glow: 0 0 32px rgba(233, 69, 96, 0.3);
  --glass-bg: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.18);
  --glass-blur: 16px;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-full: 9999px;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", "Helvetica Neue", Arial, sans-serif;
  --max-width: 1200px;
}

[data-theme="dark"] {
  --bg-body: #0f0f1a;
  --bg-card: #1a1a2e;
  --bg-card-hover: #222240;
  --bg-header: rgba(15, 15, 26, 0.85);
  --bg-footer: #0a0a14;
  --text-primary: #eaeaf0;
  --text-secondary: #b0b0cc;
  --text-muted: #707090;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-strong: rgba(255, 255, 255, 0.14);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
  --glass-bg: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  -webkit-text-size-adjust: 100%;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.75;
  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(--primary);
  text-decoration: none;
  transition: color var(--transition-fast), opacity var(--transition-fast);
}

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

ul,
ol {
  list-style: none;
}

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

h1 { font-size: clamp(1.6rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.4rem); }

p {
  margin-bottom: 0.85em;
  color: var(--text-secondary);
}

strong {
  color: var(--text-primary);
  font-weight: 700;
}

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

#site-header.scrolled {
  box-shadow: var(--shadow-md);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.6rem 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--text-primary);
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.brand:hover {
  transform: scale(1.03);
  color: var(--text-primary);
}

.brand svg {
  width: 36px;
  height: 36px;
  transition: transform var(--transition-base);
}

.brand:hover svg {
  transform: rotate(12deg) scale(1.08);
}

#site-header nav {
  flex: 1 1 auto;
  min-width: 0;
}

#site-header nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  align-items: center;
  justify-content: flex-end;
}

#site-header nav a {
  display: inline-block;
  padding: 0.4rem 0.7rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  position: relative;
  transition: color var(--transition-fast), background var(--transition-fast);
}

#site-header nav a::after {
  content: "";
  position: absolute;
  bottom: 0.15rem;
  left: 50%;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

#site-header nav a:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.08);
}

#site-header nav a:hover::after {
  width: 60%;
}

#menu-toggle,
#theme-toggle {
  display: none;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-sans);
  color: var(--text-on-dark);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  white-space: nowrap;
}

#menu-toggle:hover,
#theme-toggle:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

#menu-toggle:active,
#theme-toggle:active {
  transform: translateY(0);
}

#theme-toggle {
  display: inline-block;
}

#hero {
  position: relative;
  padding: clamp(3rem, 8vw, 6rem) 1.25rem clamp(2rem, 5vw, 4rem);
  background: linear-gradient(135deg, var(--bg-hero-start) 0%, var(--bg-hero-mid) 50%, var(--bg-hero-end) 100%);
  overflow: hidden;
  text-align: center;
}

#hero::before {
  content: "";
  position: absolute;
  top: -30%;
  left: -10%;
  width: 60%;
  height: 120%;
  background: radial-gradient(circle, rgba(233, 69, 96, 0.25) 0%, transparent 70%);
  pointer-events: none;
  animation: heroFloat 8s ease-in-out infinite;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 50%;
  height: 100%;
  background: radial-gradient(circle, rgba(83, 52, 131, 0.3) 0%, transparent 70%);
  pointer-events: none;
  animation: heroFloat 10s ease-in-out infinite reverse;
}

@keyframes heroFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(3%, -3%) scale(1.08); }
}

#hero h1 {
  position: relative;
  z-index: 1;
  color: #fff;
  margin-bottom: 1.2rem;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  animation: fadeInUp 0.8s ease-out both;
}

#hero > p {
  position: relative;
  z-index: 1;
  max-width: 820px;
  margin: 0 auto 1rem;
  color: rgba(255, 255, 255, 0.78);
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  line-height: 1.85;
  animation: fadeInUp 0.8s ease-out 0.15s both;
}

#hero > p:nth-of-type(2) {
  animation-delay: 0.25s;
}

#hero > div:not(#banner) {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 1.8rem;
  animation: fadeInUp 0.8s ease-out 0.35s both;
}

#hero > div:not(#banner) a {
  display: inline-block;
  padding: 0.75rem 2rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), box-shadow var(--transition-base), background var(--transition-base);
}

#hero > div:not(#banner) a:first-child {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
}

#hero > div:not(#banner) a:first-child:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 8px 32px rgba(233, 69, 96, 0.55);
  color: #fff;
}

#hero > div:not(#banner) a:last-child {
  color: #fff;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
}

#hero > div:not(#banner) a:last-child:hover {
  transform: translateY(-3px) scale(1.03);
  background: rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 32px rgba(255, 255, 255, 0.1);
  color: #fff;
}

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

#banner {
  position: relative;
  z-index: 1;
  margin-top: 2.5rem;
  display: flex;
  gap: 1.25rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: 1rem;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: rgba(233, 69, 96, 0.5) transparent;
  animation: fadeInUp 0.8s ease-out 0.45s both;
}

#banner::-webkit-scrollbar {
  height: 6px;
}

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

#banner::-webkit-scrollbar-thumb {
  background: rgba(233, 69, 96, 0.5);
  border-radius: var(--radius-full);
}

#banner > div {
  flex: 0 0 88%;
  max-width: 760px;
  scroll-snap-align: center;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  position: relative;
}

#banner > div::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  pointer-events: none;
}

#banner > div:hover {
  transform: translateY(-6px) scale(1.015);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

#banner svg {
  width: 100%;
  height: auto;
  display: block;
}

nav[aria-label="面包屑导航"] {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.75rem 1.25rem;
}

nav[aria-label="面包屑导航"] ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

nav[aria-label="面包屑导航"] li + li::before {
  content: "/";
  margin-right: 0.3rem;
  color: var(--text-muted);
  opacity: 0.5;
}

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

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

main > section:not(#hero) {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 3.5rem) 1.25rem;
}

main > section:not(#hero) > h2 {
  position: relative;
  margin-bottom: 1.5rem;
  padding-left: 1rem;
}

main > section:not(#hero) > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.15em;
  bottom: 0.15em;
  width: 4px;
  border-radius: var(--radius-full);
  background: linear-gradient(180deg, var(--primary), var(--secondary));
}

main > section:not(#hero) h3 {
  margin: 1.8rem 0 0.7rem;
  color: var(--text-primary);
}

main > section:not(#hero) > p {
  max-width: 900px;
  margin-bottom: 1rem;
}

#stats {
  background: linear-gradient(135deg, var(--bg-hero-mid), var(--accent));
  max-width: 100% !important;
  padding: 2.5rem 1.25rem !important;
  margin: 0 !important;
}

#stats h2 {
  text-align: center;
  color: #fff;
  padding-left: 0 !important;
  margin-bottom: 2rem !important;
}

#stats h2::before {
  display: none !important;
}

#stats ul {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  text-align: center;
}

#stats li {
  padding: 1.5rem 0.75rem;
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), background var(--transition-base), box-shadow var(--transition-base);
}

#stats li:hover {
  transform: translateY(-6px);
  background: rgba(255, 255, 255, 0.18);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

#stats strong {
  display: block;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  background: linear-gradient(135deg, #fff, var(--primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  transition: transform var(--transition-base);
}

#stats li:hover strong {
  transform: scale(1.1);
}

#stats span {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  letter-spacing: 0.05em;
}

#about,
#products,
#solutions,
#applications,
#cases,
#news,
#articles,
#faq,
#howto,
#contact,
#sitemap,
#links,
#privacy,
#disclaimer,
#copyright {
  animation: fadeInUp 0.6s ease-out both;
  animation-timeline: view();
  animation-range: entry 0% entry 30%;
}

@supports not (animation-timeline: view()) {
  #about,
  #products,
  #solutions,
  #applications,
  #cases,
  #news,
  #articles,
  #faq,
  #howto,
  #contact,
  #sitemap,
  #links,
  #privacy,
  #disclaimer,
  #copyright {
    animation: none;
    opacity: 1;
  }
}

#products > ul,
#cases > ul,
#howto ul,
#contact ul,
#sitemap ul,
#links ul {
  display: grid;
  gap: 0.75rem;
}

#products > ul {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  margin-top: 1.5rem;
}

#products > ul li {
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  position: relative;
  overflow: hidden;
}

#products > ul li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

#products > ul li:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
  background: var(--bg-card-hover);
}

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

#cases > ul {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  margin-top: 1.5rem;
}

#cases > ul li {
  padding: 1.25rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  font-style: italic;
  color: var(--text-secondary);
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#cases > ul li::before {
  content: "\201C";
  position: absolute;
  top: 0.2rem;
  left: 0.6rem;
  font-size: 2.4rem;
  font-style: normal;
  color: var(--primary);
  opacity: 0.25;
  line-height: 1;
}

#cases > ul li:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

#news article,
#articles article {
  padding: 1.5rem 1.75rem;
  margin-bottom: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  position: relative;
  overflow: hidden;
}

#news article::after,
#articles article::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

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

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

#news article h3,
#articles article h3 {
  margin: 0 0 0.4rem;
  font-size: clamp(1rem, 1.8vw, 1.2rem);
  transition: color var(--transition-fast);
}

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

#news article p,
#articles article p {
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

#news article p:first-of-type,
#articles article p:first-of-type {
  font-size: 0.8rem;
  color: var(--text-muted);
}

#news article a,
#articles article a {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.35rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(233, 69, 96, 0.1);
  transition: background var(--transition-fast), transform var(--transition-fast), color var(--transition-fast);
}

#news article a:hover,
#articles article a:hover {
  background: var(--primary);
  color: #fff;
  transform: translateX(4px);
}

#faq details {
  margin-bottom: 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

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

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

#faq summary {
  padding: 1rem 1.5rem;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  color: var(--text-primary);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  transition: color var(--transition-fast), background var(--transition-fast);
  user-select: none;
}

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

#faq summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--primary);
  transition: transform var(--transition-base);
  flex-shrink: 0;
  line-height: 1;
}

#faq details[open] summary::after {
  transform: rotate(45deg);
}

#faq summary:hover {
  color: var(--primary);
  background: rgba(233, 69, 96, 0.04);
}

#faq details > p {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  animation: fadeInUp 0.3s ease-out both;
}

#howto ol {
  counter-reset: step;
  display: grid;
  gap: 0.75rem;
  margin: 1rem 0;
}

#howto ol li {
  counter-increment: step;
  padding: 1rem 1.25rem 1rem 3.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  position: relative;
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  width: 1.8rem;
  height: 1.8rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
  box-shadow: 0 2px 8px rgba(233, 69, 96, 0.3);
}

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

#howto ul li,
#contact ul li,
#sitemap ul li,
#links ul li {
  padding: 0.7rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: transform var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast), box-shadow var(--transition-fast);
}

#howto ul li:hover,
#contact ul li:hover,
#sitemap ul li:hover,
#links ul li:hover {
  transform: translateX(4px);
  border-color: var(--primary);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
}

#contact ul li {
  font-size: 0.95rem;
}

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

#sitemap ul li a {
  display: block;
  color: var(--text-secondary);
  font-weight: 500;
}

#sitemap ul li a:hover {
  color: var(--primary);
}

#links ul {
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
}

#links ul li a {
  display: block;
  color: var(--text-secondary);
  font-weight: 500;
}

#links ul li a:hover {
  color: var(--primary);
}

#privacy,
#disclaimer,
#copyright {
  padding-top: 1.5rem !important;
  padding-bottom: 1.5rem !important;
}

#privacy p,
#disclaimer p,
#copyright p {
  font-size: 0.88rem;
  color: var(--text-muted);
  max-width: 900px;
}

footer {
  background: var(--bg-footer);
  color: var(--text-on-dark-muted);
  padding: 2.5rem 1.25rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

footer p {
  font-size: 0.82rem;
  color: var(--text-on-dark-muted);
  margin-bottom: 0.4rem;
  line-height: 1.7;
}

footer p:first-child {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-on-dark);
  margin-bottom: 0.8rem;
}

footer p:last-child {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.78rem;
  opacity: 0.6;
}

#back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 900;
  width: 44px;
  height: 44px;
  padding: 0;
  font-size: 0;
  color: transparent;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), box-shadow var(--transition-base);
}

#back-to-top::before {
  content: "\2191";
  font-size: 1.2rem;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 8px 32px rgba(233, 69, 96, 0.6);
}

#back-to-top:active {
  transform: translateY(0) scale(0.96);
}

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

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

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

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary), var(--secondary));
  border-radius: var(--radius-full);
}

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

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

@media (max-width: 1024px) {
  #site-header nav ul {
    gap: 0.1rem;
  }

  #site-header nav a {
    padding: 0.35rem 0.55rem;
    font-size: 0.82rem;
  }
}

@media (max-width: 860px) {
  #menu-toggle {
    display: inline-block;
  }

  #site-header nav {
    flex: 1 1 100%;
    order: 10;
    display: none;
    padding-bottom: 0.75rem;
  }

  #site-header nav.open {
    display: block;
    animation: fadeInUp 0.3s ease-out both;
  }

  #site-header nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 0.15rem;
  }

  #site-header nav a {
    display: block;
    padding: 0.6rem 0.9rem;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
  }

  #site-header nav a::after {
    display: none;
  }

  .header-inner {
    justify-content: space-between;
  }

  .brand {
    margin-right: auto;
  }

  #stats ul {
    grid-template-columns: repeat(2, 1fr);
  }

  #banner > div {
    flex: 0 0 85%;
  }
}

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

  .header-inner {
    padding: 0.5rem 1rem;
    gap: 0.5rem;
  }

  .brand span {
    font-size: 1rem;
  }

  .brand svg {
    width: 30px;
    height: 30px;
  }

  #menu-toggle,
  #theme-toggle {
    padding: 0.4rem 0.7rem;
    font-size: 0.78rem;
  }

  #hero {
    padding: 2.5rem 1rem 2rem;
  }

  #hero > div:not(#banner) {
    gap: 0.75rem;
  }

  #hero > div:not(#banner) a {
    padding: 0.65rem 1.5rem;
    font-size: 0.88rem;
    flex: 1 1 auto;
    text-align: center;
  }

  #banner {
    gap: 0.85rem;
  }

  #banner > div {
    flex: 0 0 92%;
  }

  main > section:not(#hero) {
    padding: 1.75rem 1rem;
  }

  main > section:not(#hero) > h2 {
    padding-left: 0.85rem;
    margin-bottom: 1.1rem;
  }

  main > section:not(#hero) > h2::before {
    width: 3px;
  }

  #stats {
    padding: 2rem 1rem !important;
  }

  #stats ul {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
  }

  #stats li {
    padding: 1.1rem 0.5rem;
  }

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

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

  #news article,
  #articles article {
    padding: 1.15rem 1.25rem;
  }

  #faq summary {
    padding: 0.85rem 1.1rem;
    font-size: 0.88rem;
  }

  #faq details > p {
    padding: 0 1.1rem 1rem;
    font-size: 0.85rem;
  }

  #howto ol li {
    padding: 0.85rem 1rem 0.85rem 3rem;
    font-size: 0.85rem;
  }

  #howto ol li::before {
    left: 0.75rem;
    width: 1.5rem;
    height: 1.5rem;
    font-size: 0.72rem;
  }

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

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

  footer {
    padding: 2rem 1rem;
  }

  #back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 40px;
    height: 40px;
  }
}

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

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

@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 {
  #site-header,
  #back-to-top,
  #banner,
  footer {
    display: none;
  }

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

  main > section:not(#hero) {
    padding: 1rem 0;
    max-width: 100%;
  }

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