:root {
  --primary: #ff6b35;
  --primary-dark: #e85520;
  --primary-light: #ff8f66;
  --secondary: #2d3561;
  --secondary-light: #4a5490;
  --accent: #00c9a7;
  --accent-light: #33dbbf;
  --warm: #ffb347;
  --warm-light: #ffc97a;
  --bg: #f5f7fb;
  --bg-alt: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.72);
  --bg-glass: rgba(255, 255, 255, 0.55);
  --bg-glass-border: rgba(255, 255, 255, 0.65);
  --text: #1a1d2e;
  --text-secondary: #4a4f6a;
  --text-muted: #7a7f9a;
  --border: rgba(45, 53, 97, 0.1);
  --shadow-sm: 0 2px 8px rgba(45, 53, 97, 0.06);
  --shadow-md: 0 8px 24px rgba(45, 53, 97, 0.1);
  --shadow-lg: 0 16px 48px rgba(45, 53, 97, 0.14);
  --shadow-glow: 0 8px 32px rgba(255, 107, 53, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 30px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s 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;
  --header-h: 68px;
}

[data-theme="dark"] {
  --primary: #ff7b4d;
  --primary-dark: #ff6b35;
  --primary-light: #ff9d78;
  --secondary: #8b93c9;
  --secondary-light: #a8b0dd;
  --accent: #2dd4bf;
  --accent-light: #5eead4;
  --warm: #ffc266;
  --warm-light: #ffd699;
  --bg: #0f1118;
  --bg-alt: #181b26;
  --bg-card: rgba(30, 34, 48, 0.78);
  --bg-glass: rgba(30, 34, 48, 0.6);
  --bg-glass-border: rgba(255, 255, 255, 0.08);
  --text: #e8eaf2;
  --text-secondary: #b0b5cc;
  --text-muted: #7a7f9a;
  --border: rgba(255, 255, 255, 0.08);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 8px 32px rgba(255, 107, 53, 0.18);
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  overflow-x: hidden;
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(255, 107, 53, 0.08), transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(0, 201, 167, 0.06), transparent 55%),
    radial-gradient(ellipse 50% 50% at 50% 100%, rgba(45, 53, 97, 0.06), transparent 60%);
}

[data-theme="dark"] body::before {
  background:
    radial-gradient(ellipse 80% 50% at 10% 0%, rgba(255, 107, 53, 0.06), transparent 60%),
    radial-gradient(ellipse 60% 40% at 90% 20%, rgba(45, 212, 191, 0.05), transparent 55%),
    radial-gradient(ellipse 50% 50% at 50% 100%, rgba(139, 147, 201, 0.04), transparent 60%);
}

img {
  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;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.3;
  font-weight: 700;
  color: var(--text);
}

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 0.75em; }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); margin: 1.4em 0 0.5em; }

p {
  margin-bottom: 1em;
  color: var(--text-secondary);
}

.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;
}

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

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

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

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

::-webkit-scrollbar-thumb {
  background: var(--text-muted);
  border-radius: 5px;
  border: 2px solid var(--bg);
}

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

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

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

.header-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 18px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  background: linear-gradient(135deg, var(--primary), var(--warm), var(--accent));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  flex-shrink: 0;
  transition: transform var(--transition), filter var(--transition);
}

.logo:hover {
  transform: scale(1.04);
  filter: brightness(1.1);
  -webkit-text-fill-color: transparent;
}

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

.main-nav::-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;
  position: relative;
  transition: color var(--transition), background var(--transition);
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 2px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--transition);
}

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

.main-nav a:hover::after {
  transform: scaleX(1);
}

.site-search {
  display: flex;
  align-items: center;
  margin-left: auto;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  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;
  padding: 9px 16px;
  font-size: 0.85rem;
  font-family: inherit;
  color: var(--text);
  width: 170px;
  outline: none;
  transition: width var(--transition);
}

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

.site-search input:focus {
  width: 220px;
}

.site-search button {
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  padding: 9px 18px;
  font-size: 0.85rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: filter var(--transition), transform var(--transition);
  white-space: nowrap;
}

.site-search button:hover {
  filter: brightness(1.1);
}

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

#theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition);
}

#theme-toggle:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  transform: translateY(-1px);
}

#menu-toggle {
  display: none;
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text-secondary);
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

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

main {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px 80px;
}

section {
  margin-bottom: 56px;
  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;
}

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

section > h2 {
  position: relative;
  padding-bottom: 14px;
  margin-bottom: 28px;
}

section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--primary), var(--warm), var(--accent));
}

#hero {
  position: relative;
  margin-top: 28px;
  padding: 56px 40px 48px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #ff6b35 0%, #ff8f66 30%, #ffb347 55%, #00c9a7 100%);
  background-size: 200% 200%;
  animation: gradientShift 12s ease infinite;
  color: #fff;
  overflow: hidden;
  box-shadow: var(--shadow-glow);
  opacity: 1;
  transform: none;
}

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

#hero::before {
  content: "";
  position: absolute;
  top: -60%;
  right: -10%;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.28), transparent 70%);
  pointer-events: none;
  animation: floatOrb 8s ease-in-out infinite;
}

#hero::after {
  content: "";
  position: absolute;
  bottom: -50%;
  left: -5%;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.16), transparent 70%);
  pointer-events: none;
  animation: floatOrb 10s ease-in-out infinite reverse;
}

@keyframes floatOrb {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-20px, 20px) scale(1.08); }
}

#hero h1 {
  position: relative;
  z-index: 1;
  color: #fff;
  text-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);
  max-width: 900px;
  letter-spacing: -0.02em;
}

.hero-lead {
  position: relative;
  z-index: 1;
  color: rgba(255, 255, 255, 0.94);
  font-size: clamp(0.95rem, 1.6vw, 1.1rem);
  max-width: 820px;
  margin-top: 16px;
  line-height: 1.85;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.1);
}

.hero-actions {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 28px;
}

.btn-primary,
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 13px 30px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: #fff;
  color: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.btn-primary:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 10px 32px rgba(0, 0, 0, 0.22);
  color: var(--primary-dark);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-3px) scale(1.03);
  color: #fff;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

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

.stat {
  background: rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: var(--radius-md);
  padding: 18px 12px;
  text-align: center;
  transition: transform var(--transition), background var(--transition);
}

.stat:hover {
  transform: translateY(-4px);
  background: rgba(255, 255, 255, 0.24);
}

.stat .num {
  display: block;
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: #fff;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
}

.stat .label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.88);
  margin-top: 4px;
}

.banner-carousel {
  position: relative;
  z-index: 1;
  margin-top: 28px;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.22);
  min-height: 54px;
}

.banner-carousel .slide {
  display: none;
  padding: 16px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: #fff;
  text-align: center;
  letter-spacing: 0.02em;
}

.banner-carousel .slide.active {
  display: block;
  animation: slideFade 0.6s ease;
}

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

.breadcrumb {
  margin: 32px 0 8px;
  opacity: 1;
  transform: none;
}

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

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

.breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--text-muted);
  opacity: 0.5;
}

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

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

.breadcrumb [aria-current="page"] {
  color: var(--primary);
  font-weight: 600;
}

#about,
#products,
#solutions,
#cases,
#news,
#articles,
#howto,
#faq,
#contact,
#sitemap,
#links,
#legal {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition), background var(--transition), border-color var(--transition);
}

#about:hover,
#products:hover,
#solutions:hover,
#cases:hover,
#news:hover,
#articles:hover,
#howto:hover,
#faq:hover,
#contact:hover,
#sitemap:hover,
#links:hover,
#legal:hover {
  box-shadow: var(--shadow-md);
}

#products ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

#products ul li {
  position: relative;
  padding: 14px 18px 14px 44px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

#products ul li::before {
  content: "";
  position: absolute;
  left: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--warm));
  box-shadow: 0 0 0 4px rgba(255, 107, 53, 0.12);
}

#products ul li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-light);
  background: var(--bg-card);
}

#cases blockquote {
  position: relative;
  margin: 14px 0;
  padding: 18px 22px 18px 52px;
  background: linear-gradient(135deg, rgba(255, 107, 53, 0.06), rgba(0, 201, 167, 0.06));
  border-left: 4px solid var(--primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-style: italic;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  left: 16px;
  top: 8px;
  font-size: 2.6rem;
  line-height: 1;
  color: var(--primary);
  opacity: 0.4;
  font-family: Georgia, serif;
}

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

#news article,
#articles article {
  position: relative;
  padding: 24px 26px;
  margin-bottom: 16px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
  background: linear-gradient(180deg, var(--primary), var(--warm));
  opacity: 0;
  transition: opacity var(--transition);
}

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

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

#news article h3,
#articles article h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 1.08rem;
  transition: color var(--transition);
}

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

#news article p,
#articles article p {
  font-size: 0.9rem;
  margin-bottom: 8px;
}

#news article p:first-of-type,
#articles article p:first-of-type {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

#news article a,
#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  transition: gap var(--transition), color var(--transition);
}

#news article a::after,
#articles article a::after {
  content: "\2192";
  transition: transform var(--transition);
}

#news article a:hover,
#articles article a:hover {
  gap: 10px;
  color: var(--primary-dark);
}

#news article a:hover::after,
#articles article a:hover::after {
  transform: translateX(4px);
}

#howto ol {
  counter-reset: howto;
  margin: 16px 0;
}

#howto ol li {
  counter-increment: howto;
  position: relative;
  padding: 16px 20px 16px 62px;
  margin-bottom: 10px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.92rem;
  color: var(--text-secondary);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

#howto ol li::before {
  content: counter(howto);
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--warm));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(255, 107, 53, 0.25);
}

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

#howto ul {
  margin: 12px 0;
}

#howto ul li {
  position: relative;
  padding: 8px 0 8px 26px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

#howto ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  border-radius: 2px;
  background: var(--accent);
  transition: transform var(--transition);
}

#howto ul li:hover::before {
  transform: translateY(-50%) rotate(45deg) scale(1.2);
}

#faq details {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 10px;
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition), background var(--transition);
}

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

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

#faq summary {
  position: relative;
  padding: 16px 52px 16px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition), background var(--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: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 107, 53, 0.1);
  color: var(--primary);
  font-size: 1.2rem;
  font-weight: 700;
  line-height: 1;
  transition: transform var(--transition), background var(--transition), color var(--transition);
}

#faq details[open] summary::after {
  content: "\2212";
  background: var(--primary);
  color: #fff;
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover {
  color: var(--primary);
  background: rgba(255, 107, 53, 0.04);
}

#faq details p {
  padding: 0 22px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  animation: faqReveal 0.35s ease;
  margin-bottom: 0;
}

@keyframes faqReveal {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

#contact p {
  font-size: 0.92rem;
  margin-bottom: 6px;
}

#contact p:first-of-type {
  font-weight: 600;
  color: var(--text);
}

#sitemap ul,
#links ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

#sitemap ul li a,
#links ul li a {
  display: block;
  padding: 12px 18px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition), color var(--transition);
}

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

#legal h3 {
  font-size: 1.05rem;
  color: var(--primary);
}

#legal p:last-of-type {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
  font-size: 0.82rem;
  color: var(--text-muted);
}

footer {
  position: relative;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
  padding: 36px 24px;
  text-align: center;
  transition: background var(--transition), border-color var(--transition);
}

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

footer p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

footer a {
  color: var(--text-secondary);
  font-weight: 500;
  padding: 0 4px;
}

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

#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: none;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  font-size: 0;
  cursor: pointer;
  box-shadow: var(--shadow-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.85);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition), filter var(--transition);
}

#back-to-top::before {
  content: "\2191";
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
}

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

#back-to-top:hover {
  filter: brightness(1.12);
  transform: translateY(-4px) scale(1.06);
}

#back-to-top:active {
  transform: translateY(-1px) scale(0.98);
}

@media (max-width: 1024px) {
  .main-nav a {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .site-search input {
    width: 130px;
  }

  .site-search input:focus {
    width: 160px;
  }

  #hero {
    padding: 44px 28px 40px;
  }
}

@media (max-width: 860px) {
  :root {
    --header-h: 60px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 10px;
    flex-wrap: wrap;
    height: auto;
    min-height: var(--header-h);
    padding-top: 10px;
    padding-bottom: 10px;
  }

  .main-nav {
    order: 10;
    width: 100%;
    flex-basis: 100%;
    padding-bottom: 4px;
    border-top: 1px solid var(--border);
    padding-top: 8px;
    display: none;
  }

  .main-nav.open {
    display: flex;
  }

  #menu-toggle {
    display: block;
    margin-left: auto;
  }

  .site-search {
    order: 11;
    width: 100%;
    flex-basis: 100%;
    margin-left: 0;
    display: none;
  }

  .site-search.open {
    display: flex;
  }

  .site-search input {
    width: 100%;
    flex: 1;
  }

  .site-search input:focus {
    width: 100%;
  }

  #theme-toggle {
    font-size: 0.75rem;
    padding: 7px 12px;
  }

  main {
    padding: 0 16px 60px;
  }

  section {
    margin-bottom: 40px;
  }

  #hero {
    padding: 36px 22px 32px;
    border-radius: var(--radius-lg);
  }

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

  #about,
  #products,
  #solutions,
  #cases,
  #news,
  #articles,
  #howto,
  #faq,
  #contact,
  #sitemap,
  #links,
  #legal {
    padding: 26px 20px;
    border-radius: var(--radius-md);
  }
}

@media (max-width: 560px) {
  body {
    font-size: 15px;
  }

  .logo {
    font-size: 1.15rem;
  }

  #hero {
    padding: 28px 18px 26px;
    margin-top: 16px;
  }

  .hero-actions {
    flex-direction: column;
    gap: 10px;
  }

  .btn-primary,
  .btn-secondary {
    width: 100%;
    padding: 12px 20px;
    font-size: 0.9rem;
  }

  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    margin-top: 24px;
  }

  .stat {
    padding: 14px 8px;
  }

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

  .banner-carousel .slide {
    padding: 13px 16px;
    font-size: 0.85rem;
  }

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

  #howto ol li {
    padding: 14px 16px 14px 54px;
    font-size: 0.88rem;
  }

  #howto ol li::before {
    left: 12px;
    width: 28px;
    height: 28px;
    font-size: 0.78rem;
  }

  #faq summary {
    padding: 14px 46px 14px 18px;
    font-size: 0.88rem;
  }

  #faq summary::after {
    right: 14px;
    width: 22px;
    height: 22px;
    font-size: 1rem;
  }

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

  #sitemap ul li a,
  #links ul li a {
    padding: 10px 12px;
    font-size: 0.82rem;
  }

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 42px;
    height: 42px;
  }
}

@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;
  }

  section {
    opacity: 1;
    transform: none;
  }
}

@media print {
  #site-header,
  #back-to-top,
  .banner-carousel,
  .hero-actions {
    display: none;
  }

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

  section {
    opacity: 1;
    transform: none;
    box-shadow: none;
    border: 1px solid #ddd;
  }
}