:root {
  --primary: #FF6B35;
  --primary-dark: #E55A2B;
  --primary-light: #FF8C5F;
  --secondary: #2E86AB;
  --accent: #7B2D8E;
  --bg: #F7F8FC;
  --bg-card: #FFFFFF;
  --bg-header: rgba(255, 255, 255, 0.85);
  --bg-footer: #1A1D2E;
  --text: #1A1D2E;
  --text-secondary: #5A5F73;
  --text-muted: #8E93A8;
  --border: #E8EAF0;
  --shadow-sm: 0 2px 8px rgba(26, 29, 46, 0.06);
  --shadow-md: 0 8px 24px rgba(26, 29, 46, 0.1);
  --shadow-lg: 0 16px 48px rgba(26, 29, 46, 0.14);
  --shadow-glow: 0 8px 32px rgba(255, 107, 53, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-blur: blur(20px);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
}

[data-theme="dark"] {
  --primary: #FF7B4A;
  --primary-dark: #FF6B35;
  --primary-light: #FF9B73;
  --secondary: #4AA8CC;
  --accent: #A855C4;
  --bg: #0F1119;
  --bg-card: #1A1D2E;
  --bg-header: rgba(15, 17, 25, 0.85);
  --bg-footer: #0A0C14;
  --text: #F0F2F8;
  --text-secondary: #A8AEC2;
  --text-muted: #6E738A;
  --border: #2A2E42;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 8px 32px rgba(255, 123, 74, 0.25);
  --glass-bg: rgba(26, 29, 46, 0.6);
  --glass-border: rgba(255, 255, 255, 0.08);
}

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

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

body {
  font-family: var(--font);
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  font-size: 16px;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
  -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), opacity var(--transition);
}

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

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

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

#site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--bg-header);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  transition: background var(--transition), box-shadow var(--transition), transform var(--transition);
}

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

.header-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.logo:hover {
  color: var(--text);
  opacity: 0.85;
}

.logo svg {
  border-radius: 10px;
  box-shadow: var(--shadow-glow);
  transition: transform var(--transition);
}

.logo:hover svg {
  transform: rotate(-8deg) scale(1.05);
}

.logo-text {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#main-nav {
  flex: 1;
  min-width: 0;
}

#main-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}

#main-nav ul::-webkit-scrollbar {
  display: none;
}

#main-nav a {
  display: block;
  padding: 8px 12px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}

#main-nav a:hover {
  color: var(--primary);
  background: rgba(255, 107, 53, 0.08);
}

#menu-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  font-size: 1.4rem;
  color: var(--text);
  align-items: center;
  justify-content: center;
  transition: background var(--transition);
}

#menu-toggle:hover {
  background: var(--border);
}

#site-search {
  display: flex;
  align-items: center;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 4px 4px 16px;
  transition: border-color var(--transition), box-shadow var(--transition);
  flex-shrink: 0;
}

#site-search:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.15);
}

#site-search input {
  border: none;
  background: transparent;
  outline: none;
  color: var(--text);
  font-size: 0.875rem;
  width: 180px;
  padding: 6px 0;
}

#site-search input::placeholder {
  color: var(--text-muted);
}

#site-search button {
  padding: 8px 18px;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition);
}

#site-search button:hover {
  transform: scale(1.04);
  box-shadow: var(--shadow-glow);
}

#theme-toggle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  font-size: 1.15rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
  border: 1px solid var(--border);
  flex-shrink: 0;
  transition: transform var(--transition), background var(--transition), border-color var(--transition);
}

#theme-toggle:hover {
  transform: rotate(20deg) scale(1.1);
  background: var(--border);
}

main {
  padding-top: 68px;
}

#hero {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  max-width: 1400px;
  margin: 0 auto;
  padding: 64px 24px 72px;
}

#hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 107, 53, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -10%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(123, 45, 142, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: -1;
}

.hero-content h1 {
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
  background: linear-gradient(135deg, var(--text) 0%, var(--primary) 60%, var(--accent) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 600px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 36px;
}

.stat-item {
  text-align: center;
  padding: 18px 8px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-num {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 700;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 40px rgba(255, 107, 53, 0.45);
}

.btn-secondary {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1.5px solid var(--border);
  color: var(--text);
}

.btn-secondary:hover {
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.hero-banner {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  aspect-ratio: 2 / 1;
}

.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 0.6s ease, transform 0.6s ease;
  pointer-events: none;
}

.banner-slide.active {
  opacity: 1;
  transform: scale(1);
  pointer-events: auto;
}

.banner-slide svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-dots {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 2;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transition: all var(--transition);
}

.dot.active {
  width: 28px;
  border-radius: 999px;
  background: #fff;
}

.dot:hover {
  background: rgba(255, 255, 255, 0.85);
}

#breadcrumb {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 24px 8px;
}

#breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

#breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--text-muted);
}

#breadcrumb a {
  color: var(--text-secondary);
}

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

section:not(#hero):not(#breadcrumb) {
  max-width: 1400px;
  margin: 0 auto;
  padding: 56px 24px;
}

section h2 {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  position: relative;
  padding-left: 20px;
}

section h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 70%;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
}

section h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 28px 0 12px;
  color: var(--text);
}

section p {
  color: var(--text-secondary);
  margin-bottom: 14px;
  max-width: 900px;
}

#brand-intro,
#products,
#solutions,
#cases,
#news,
#articles,
#faq,
#howto,
#contact,
#sitemap,
#friend-links {
  animation: fadeUp 0.7s ease both;
}

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

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

#products h3,
#solutions h3,
#brand-intro h3 {
  display: inline-block;
  padding: 6px 16px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(123, 45, 142, 0.1));
  border-radius: 999px;
  font-size: 1.05rem;
  margin-top: 32px;
}

.news-item,
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.news-item:hover,
.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

.news-item h3,
.article-card h3 {
  margin-top: 0;
  font-size: 1.15rem;
  color: var(--text);
  transition: color var(--transition);
}

.news-item:hover h3,
.article-card:hover h3 {
  color: var(--primary);
}

.news-item time,
.article-card time {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  padding: 2px 10px;
  background: var(--bg);
  border-radius: 999px;
}

.article-card a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: 8px;
  transition: gap var(--transition);
}

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

.article-card a:hover {
  gap: 10px;
}

.article-card a:hover::after {
  transform: translateX(4px);
}

#articles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
  align-items: start;
}

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

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

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

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

#faq summary {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  transition: background var(--transition), color var(--transition);
  position: relative;
}

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

#faq summary::after {
  content: "+";
  font-size: 1.4rem;
  font-weight: 400;
  color: var(--primary);
  flex-shrink: 0;
  transition: transform var(--transition);
  line-height: 1;
}

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

#faq summary:hover {
  background: rgba(255, 107, 53, 0.05);
  color: var(--primary);
}

#faq details p {
  padding: 0 24px 20px;
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-secondary);
  animation: fadeUp 0.4s ease;
}

#cases blockquote {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
}

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

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

#howto ol {
  counter-reset: step;
  display: grid;
  gap: 14px;
  margin: 20px 0;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 18px 20px 18px 64px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
}

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

#howto ol li strong {
  color: var(--text);
}

#contact p {
  padding: 10px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 8px;
  max-width: 600px;
  font-size: 0.95rem;
  transition: transform var(--transition), border-color var(--transition);
}

#contact p:hover {
  transform: translateX(6px);
  border-color: var(--primary);
}

#sitemap ul,
#friend-links ul {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

#sitemap a,
#friend-links a {
  display: inline-block;
  padding: 10px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
}

#sitemap a:hover,
#friend-links a:hover {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
}

#site-footer {
  background: var(--bg-footer);
  color: #C8CCE0;
  padding: 56px 24px 24px;
  margin-top: 40px;
}

[data-theme="dark"] #site-footer {
  background: #0A0C14;
}

.footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-col h3 {
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-col p {
  font-size: 0.875rem;
  color: #8E93A8;
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-col ul {
  display: grid;
  gap: 10px;
}

.footer-col ul a {
  color: #8E93A8;
  font-size: 0.875rem;
  transition: color var(--transition), padding-left var(--transition);
}

.footer-col ul a:hover {
  color: var(--primary);
  padding-left: 6px;
}

#copyright,
#privacy,
#disclaimer,
#security {
  max-width: 1400px;
  margin: 24px auto 0;
  padding: 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

#copyright h3,
#privacy h3,
#disclaimer h3,
#security h3 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 8px;
}

#copyright p,
#privacy p,
#disclaimer p,
#security p {
  font-size: 0.8rem;
  color: #6E738A;
  line-height: 1.8;
  max-width: 900px;
}

.footer-meta {
  max-width: 1400px;
  margin: 24px auto 0;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
  font-size: 0.8rem;
  color: #6E738A;
}

.footer-meta span {
  margin: 0 6px;
}

#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 1.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
  z-index: 999;
}

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

#back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 12px 40px rgba(255, 107, 53, 0.5);
}

@media (max-width: 1024px) {
  #hero {
    grid-template-columns: 1fr;
    gap: 40px;
    padding: 48px 24px 56px;
  }

  .hero-banner {
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
  }

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

  #site-search input {
    width: 140px;
  }

  #main-nav a {
    padding: 8px 9px;
    font-size: 0.82rem;
  }
}

@media (max-width: 768px) {
  html {
    scroll-padding-top: 64px;
  }

  .header-inner {
    height: 60px;
    padding: 0 16px;
    gap: 12px;
    flex-wrap: wrap;
  }

  main {
    padding-top: 60px;
  }

  #menu-toggle {
    display: flex;
    order: 3;
  }

  .logo {
    font-size: 1.1rem;
  }

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

  #main-nav {
    order: 5;
    flex-basis: 100%;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
  }

  #main-nav.open {
    max-height: 420px;
    padding-bottom: 12px;
  }

  #main-nav ul {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    overflow: visible;
  }

  #main-nav a {
    padding: 11px 14px;
    font-size: 0.9rem;
    border-radius: var(--radius-sm);
  }

  #site-search {
    order: 4;
    margin-left: auto;
    padding: 3px 3px 3px 12px;
  }

  #site-search input {
    width: 110px;
    font-size: 0.82rem;
  }

  #site-search button {
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  #theme-toggle {
    order: 2;
    width: 38px;
    height: 38px;
    font-size: 1rem;
  }

  #hero {
    padding: 36px 16px 48px;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-num {
    font-size: 1.3rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    padding: 14px 24px;
  }

  section:not(#hero):not(#breadcrumb) {
    padding: 40px 16px;
  }

  section h2 {
    padding-left: 16px;
    margin-bottom: 18px;
  }

  section h2::before {
    width: 5px;
  }

  #breadcrumb {
    padding: 0 16px 8px;
  }

  #articles {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .news-item,
  .article-card {
    padding: 22px 20px;
  }

  #faq summary {
    padding: 16px 18px;
    font-size: 0.95rem;
  }

  #faq details p {
    padding: 0 18px 18px;
    font-size: 0.9rem;
  }

  #howto ol li {
    padding: 16px 16px 16px 56px;
    font-size: 0.92rem;
  }

  #howto ol li::before {
    left: 14px;
    width: 28px;
    height: 28px;
    font-size: 0.82rem;
  }

  .footer-inner {
    grid-template-columns: 1fr;
    gap: 28px;
    padding-bottom: 32px;
  }

  #site-footer {
    padding: 40px 16px 20px;
  }

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
    font-size: 1.15rem;
  }
}

@media (max-width: 480px) {
  .hero-content h1 {
    font-size: 1.5rem;
  }

  .hero-lead {
    font-size: 0.95rem;
  }

  .stat-item {
    padding: 14px 6px;
  }

  .stat-num {
    font-size: 1.15rem;
  }

  .stat-label {
    font-size: 0.72rem;
  }

  #site-search input {
    width: 80px;
  }

  .logo-text {
    display: none;
  }

  .banner-dots {
    bottom: 12px;
    gap: 8px;
  }

  .dot {
    width: 8px;
    height: 8px;
  }

  .dot.active {
    width: 22px;
  }
}

@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,
  #site-search,
  #theme-toggle,
  #menu-toggle,
  .hero-actions,
  #friend-links {
    display: none !important;
  }

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

  main {
    padding-top: 0;
  }

  section {
    page-break-inside: avoid;
  }
}