:root {
  --primary: #E8B84B;
  --primary-dark: #C99A2E;
  --primary-light: #F5D98A;
  --bg-dark: #0B0E1A;
  --bg-dark-secondary: #141829;
  --bg-card-dark: #1E2440;
  --bg-card-hover-dark: #2A3155;
  --text-primary-dark: #E8ECF4;
  --text-secondary-dark: #8892B0;
  --text-muted-dark: #5A6380;
  --border-dark: #2A3155;
  --bg-light: #F7F8FC;
  --bg-light-secondary: #FFFFFF;
  --bg-card-light: #FFFFFF;
  --bg-card-hover-light: #F0F2F8;
  --text-primary-light: #1A1D2E;
  --text-secondary-light: #5A6380;
  --text-muted-light: #8892B0;
  --border-light: #E2E6EF;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.18);
  --shadow-glow: 0 0 32px rgba(232, 184, 75, 0.25);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --header-height: 64px;
  --max-width: 1200px;
  --section-padding: 80px 24px;
}

[data-theme="light"] {
  --bg-dark: #F7F8FC;
  --bg-dark-secondary: #FFFFFF;
  --bg-card-dark: #FFFFFF;
  --bg-card-hover-dark: #F0F2F8;
  --text-primary-dark: #1A1D2E;
  --text-secondary-dark: #5A6380;
  --text-muted-dark: #8892B0;
  --border-dark: #E2E6EF;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 32px rgba(232, 184, 75, 0.2);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg-dark: #F7F8FC;
    --bg-dark-secondary: #FFFFFF;
    --bg-card-dark: #FFFFFF;
    --bg-card-hover-dark: #F0F2F8;
    --text-primary-dark: #1A1D2E;
    --text-secondary-dark: #5A6380;
    --text-muted-dark: #8892B0;
    --border-dark: #E2E6EF;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 32px rgba(232, 184, 75, 0.2);
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary-dark);
  background-color: var(--bg-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
}

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);
}

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

ul,
ol {
  list-style: none;
}

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

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

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
}

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

h1 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.75rem); }
h4 { font-size: clamp(1.1rem, 2vw, 1.35rem); }

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

p:last-child {
  margin-bottom: 0;
}

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

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  z-index: 10000;
  padding: 12px 24px;
  background: var(--primary);
  color: var(--bg-dark);
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
  color: var(--bg-dark);
}

#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 14, 26, 0.82);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(42, 49, 85, 0.5);
  transition: background var(--transition-base), border-color var(--transition-base);
}

[data-theme="light"] #site-header {
  background: rgba(247, 248, 252, 0.85);
  border-bottom-color: rgba(226, 230, 239, 0.8);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) #site-header {
    background: rgba(247, 248, 252, 0.85);
    border-bottom-color: rgba(226, 230, 239, 0.8);
  }
}

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

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

.logo-area a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary-dark);
}

.logo-area svg {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

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

.site-title {
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.site-slogan {
  font-size: 0.75rem;
  color: var(--text-muted-dark);
  padding-left: 10px;
  border-left: 1px solid var(--border-dark);
  white-space: nowrap;
  display: none;
}

@media (min-width: 900px) {
  .site-slogan {
    display: block;
  }
}

#main-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  display: block;
  padding: 8px 14px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary-dark);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background: rgba(232, 184, 75, 0.08);
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
}

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.mobile-menu-btn:hover {
  background: rgba(232, 184, 75, 0.1);
}

.menu-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-primary-dark);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-menu-btn[aria-expanded="true"] .menu-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn[aria-expanded="true"] .menu-bar:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn[aria-expanded="true"] .menu-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  color: var(--text-secondary-dark);
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
  flex-shrink: 0;
}

.theme-toggle-btn:hover {
  color: var(--primary);
  background: rgba(232, 184, 75, 0.1);
  transform: rotate(15deg);
}

.sun-icon,
.moon-icon {
  transition: opacity var(--transition-base), transform var(--transition-base);
}

.moon-icon {
  display: none;
}

[data-theme="light"] .sun-icon {
  display: none;
}

[data-theme="light"] .moon-icon {
  display: block;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .sun-icon {
    display: none;
  }
  :root:not([data-theme="dark"]) .moon-icon {
    display: block;
  }
}

.search-area {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 12px;
}

.search-area form {
  display: flex;
  align-items: center;
  max-width: 480px;
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-area form:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(232, 184, 75, 0.15);
}

.search-area input {
  flex: 1;
  padding: 10px 20px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary-dark);
  font-size: 0.9rem;
}

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

.search-area button {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 18px;
  color: var(--text-secondary-dark);
  transition: color var(--transition-fast), background var(--transition-fast);
}

.search-area button:hover {
  color: var(--primary);
  background: rgba(232, 184, 75, 0.08);
}

.breadcrumb-nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 16px 24px 0;
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
}

.breadcrumb-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-muted-dark);
}

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

.breadcrumb-list a {
  color: var(--text-secondary-dark);
}

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

.breadcrumb-list li[aria-current="page"] span {
  color: var(--text-primary-dark);
  font-weight: 500;
}

main {
  display: block;
}

.hero-section {
  position: relative;
  overflow: hidden;
  padding: 40px 24px 60px;
}

.banner-carousel {
  position: relative;
  max-width: var(--max-width);
  margin: 0 auto;
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 420px;
}

.banner-slide {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 48px;
  opacity: 0;
  visibility: hidden;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease, visibility 0.6s;
  background: linear-gradient(135deg, #141829 0%, #1E2440 40%, #2A1F3D 70%, #1A1D2E 100%);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(232, 184, 75, 0.12);
}

.banner-slide.active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.banner-slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 80% 20%, rgba(232, 184, 75, 0.12) 0%, transparent 60%),
              radial-gradient(ellipse at 20% 80%, rgba(120, 80, 200, 0.1) 0%, transparent 60%);
  pointer-events: none;
}

.banner-content {
  position: relative;
  z-index: 2;
  flex: 1;
  max-width: 560px;
}

.banner-content h1,
.banner-content h2 {
  margin-bottom: 16px;
  color: #FFFFFF;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.banner-content h1 {
  background: linear-gradient(135deg, #FFFFFF 0%, var(--primary-light) 60%, var(--primary) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1rem;
  line-height: 1.8;
  color: rgba(232, 236, 244, 0.85);
  margin-bottom: 28px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0B0E1A;
  box-shadow: 0 4px 16px rgba(232, 184, 75, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(232, 184, 75, 0.5);
  color: #0B0E1A;
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-outline:hover {
  background: rgba(232, 184, 75, 0.12);
  transform: translateY(-2px);
  color: var(--primary-light);
}

.banner-visual {
  position: relative;
  z-index: 2;
  flex-shrink: 0;
  display: none;
}

.banner-visual svg {
  width: 100%;
  max-width: 320px;
  height: auto;
  filter: drop-shadow(0 12px 32px rgba(0, 0, 0, 0.4));
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.banner-dots {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 24px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background: var(--border-dark);
  transition: background var(--transition-fast), width var(--transition-base), transform var(--transition-fast);
  position: relative;
}

.dot:hover {
  background: var(--text-muted-dark);
}

.dot.active {
  width: 32px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
}

.content-section {
  padding: var(--section-padding);
}

.content-section.alt-bg {
  background: var(--bg-dark-secondary);
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-title {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  padding-bottom: 20px;
}

.section-title::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  border-radius: 3px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
}

.about-text h3 {
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 1.25rem;
}

.about-text h3:first-child {
  margin-top: 0;
}

.about-text p {
  line-height: 1.9;
}

.about-text strong {
  color: var(--text-primary-dark);
  font-weight: 600;
}

.about-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.info-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.info-card h4 {
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-dark);
  color: var(--primary);
  font-size: 1.1rem;
}

.info-card dl {
  display: grid;
  grid-template-columns: auto;
  gap: 4px;
}

.info-card dt {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted-dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 12px;
}

.info-card dt:first-child {
  margin-top: 0;
}

.info-card dd {
  font-size: 0.9rem;
  color: var(--text-secondary-dark);
  line-height: 1.6;
}

.info-card dd a {
  color: var(--primary);
}

.info-card p {
  font-size: 0.9rem;
  margin-bottom: 10px;
  line-height: 1.7;
}

.info-card p strong {
  color: var(--text-primary-dark);
}

.products-intro,
.solutions-intro,
.articles-intro {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 48px;
}

.products-intro h3,
.solutions-intro h3,
.articles-intro h3 {
  margin-bottom: 12px;
}

.product-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 64px;
}

.product-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
  position: relative;
  overflow: hidden;
}

.product-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.product-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232, 184, 75, 0.3);
  background: var(--bg-card-hover-dark);
}

.product-card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(232, 184, 75, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  transition: transform var(--transition-base), background var(--transition-base);
}

.product-card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
  background: rgba(232, 184, 75, 0.18);
}

.card-icon svg {
  width: 40px;
  height: 40px;
}

.product-card h4 {
  margin-bottom: 12px;
  font-size: 1.2rem;
}

.product-card > p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 18px;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.feature-list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.85rem;
  color: var(--text-secondary-dark);
  line-height: 1.6;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.7;
}

.product-advantages {
  margin-top: 24px;
}

.product-advantages > h3 {
  text-align: center;
  margin-bottom: 40px;
}

.advantage-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.advantage-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.advantage-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.advantage-item h4 {
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 1.05rem;
}

.advantage-item p {
  font-size: 0.9rem;
  line-height: 1.8;
}

.solution-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 64px;
}

.solution-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
}

.solution-card::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 28px;
  right: 28px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.solution-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.solution-card:hover::after {
  opacity: 1;
}

.solution-card h4 {
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 1.15rem;
}

.solution-card p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 10px;
}

.solution-card p strong {
  color: var(--text-primary-dark);
  font-weight: 600;
}

.industry-applications > h3 {
  text-align: center;
  margin-bottom: 40px;
}

.application-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.application-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  text-align: center;
}

.application-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.application-item h4 {
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 1.05rem;
}

.application-item p {
  font-size: 0.88rem;
  line-height: 1.8;
}

.case-studies > h3 {
  text-align: center;
  margin-bottom: 40px;
}

.case-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  margin-bottom: 24px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.case-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.case-item h4 {
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 1.15rem;
}

.case-item p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 10px;
}

.case-item p strong {
  color: var(--text-primary-dark);
  font-weight: 600;
}

.testimonials {
  margin-top: 64px;
}

.testimonials > h3 {
  text-align: center;
  margin-bottom: 40px;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.testimonial-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  position: relative;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.testimonial-item::before {
  content: "\201C";
  position: absolute;
  top: 12px;
  left: 20px;
  font-size: 4rem;
  line-height: 1;
  color: var(--primary);
  opacity: 0.15;
  font-family: Georgia, serif;
}

.testimonial-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.testimonial-item p {
  font-size: 0.92rem;
  line-height: 1.8;
  font-style: italic;
  margin-bottom: 16px;
  position: relative;
  z-index: 1;
}

.testimonial-item footer {
  border-top: 1px solid var(--border-dark);
  padding-top: 12px;
}

.testimonial-item cite {
  font-size: 0.85rem;
  color: var(--primary);
  font-style: normal;
  font-weight: 500;
}

.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.article-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(232, 184, 75, 0.3);
}

.article-thumb {
  overflow: hidden;
  background: var(--bg-dark-secondary);
}

.article-thumb svg {
  width: 100%;
  height: auto;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-thumb svg {
  transform: scale(1.05);
}

.article-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.article-body h4 {
  margin-bottom: 10px;
  font-size: 1.05rem;
  line-height: 1.5;
}

.article-body h4 a {
  color: var(--text-primary-dark);
  transition: color var(--transition-fast);
}

.article-body h4 a:hover {
  color: var(--primary);
}

.article-body time {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted-dark);
  margin-bottom: 12px;
}

.article-body p {
  font-size: 0.88rem;
  line-height: 1.8;
  margin-bottom: 16px;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 4;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.read-more {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--primary);
  align-self: flex-start;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.read-more:hover {
  color: var(--primary-light);
  transform: translateX(4px);
}

.faq-intro {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 40px;
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.faq-item:hover {
  border-color: rgba(232, 184, 75, 0.3);
}

.faq-item[open] {
  border-color: rgba(232, 184, 75, 0.4);
  box-shadow: var(--shadow-sm);
}

.faq-item summary {
  padding: 20px 24px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary-dark);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  list-style: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  position: relative;
}

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

.faq-item summary::after {
  content: "";
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: rotate(45deg);
  transition: transform var(--transition-base);
  margin-top: -4px;
}

.faq-item[open] summary::after {
  transform: rotate(-135deg);
  margin-top: 4px;
}

.faq-item summary:hover {
  color: var(--primary);
  background: rgba(232, 184, 75, 0.04);
}

.faq-answer {
  padding: 0 24px 20px;
  border-top: 1px solid var(--border-dark);
  animation: faqSlide 0.3s ease;
}

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

.faq-answer p {
  font-size: 0.9rem;
  line-height: 1.9;
  padding-top: 16px;
}

.howto-container {
  max-width: 860px;
  margin: 0 auto;
}

.howto-container > h3 {
  text-align: center;
  margin-bottom: 32px;
}

.howto-meta {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-md);
  padding: 24px 28px;
  margin-bottom: 40px;
}

.howto-meta p {
  font-size: 0.9rem;
  line-height: 1.8;
  margin-bottom: 8px;
}

.howto-meta p:last-child {
  margin-bottom: 0;
}

.howto-meta strong {
  color: var(--primary);
  font-weight: 600;
}

.howto-steps {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 48px;
  counter-reset: step;
}

.howto-step {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: relative;
  padding-left: 76px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  counter-increment: step;
}

.howto-step::before {
  content: counter(step);
  position: absolute;
  left: 24px;
  top: 28px;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0B0E1A;
  font-weight: 800;
  font-size: 1rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(232, 184, 75, 0.3);
}

.howto-step:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.howto-step h4 {
  margin-bottom: 10px;
  color: var(--primary);
  font-size: 1.05rem;
}

.howto-step p {
  font-size: 0.9rem;
  line-height: 1.8;
}

.howto-notes {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}

.howto-notes h4 {
  margin-top: 24px;
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 1rem;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
}

.howto-notes h4:first-child {
  margin-top: 0;
}

.howto-notes ul {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 8px;
}

.howto-notes li {
  position: relative;
  padding-left: 22px;
  font-size: 0.88rem;
  color: var(--text-secondary-dark);
  line-height: 1.7;
}

.howto-notes li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--primary);
  opacity: 0.7;
}

.howto-notes > p {
  font-size: 0.9rem;
  line-height: 1.9;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  margin-bottom: 64px;
}

.contact-info h3 {
  margin-bottom: 24px;
  color: var(--primary);
}

.contact-info address {
  font-style: normal;
}

.contact-info address p {
  font-size: 0.92rem;
  line-height: 1.9;
  margin-bottom: 12px;
}

.contact-info address strong {
  color: var(--text-primary-dark);
  font-weight: 600;
}

.contact-info address a {
  color: var(--primary);
  transition: color var(--transition-fast);
}

.contact-info address a:hover {
  color: var(--primary-light);
}

.contact-map {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-dark);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.contact-map svg {
  width: 100%;
  height: auto;
}

.trust-section {
  margin-top: 24px;
}

.trust-section > h3 {
  text-align: center;
  margin-bottom: 40px;
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.trust-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.trust-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.trust-item h4 {
  margin-bottom: 12px;
  color: var(--primary);
  font-size: 1.05rem;
}

.trust-item p {
  font-size: 0.9rem;
  line-height: 1.8;
}

.sitemap-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.sitemap-col h3 {
  margin-bottom: 16px;
  color: var(--primary);
  font-size: 1.05rem;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-dark);
}

.sitemap-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sitemap-col li a {
  font-size: 0.9rem;
  color: var(--text-secondary-dark);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.sitemap-col li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.legal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.legal-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-dark);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.legal-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(232, 184, 75, 0.3);
}

.legal-item h3 {
  margin-bottom: 14px;
  color: var(--primary);
  font-size: 1.1rem;
}

.legal-item p {
  font-size: 0.88rem;
  line-height: 1.9;
}

#site-footer {
  background: var(--bg-dark-secondary);
  border-top: 1px solid var(--border-dark);
  padding: 64px 24px 0;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.footer-brand svg {
  width: 40px;
  height: 40px;
  flex-shrink: 0;
}

.footer-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary-dark);
  margin-bottom: 4px;
}

.footer-slogan {
  font-size: 0.85rem;
  color: var(--text-muted-dark);
  margin-bottom: 0;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.footer-col h4 {
  margin-bottom: 16px;
  font-size: 0.95rem;
  color: var(--text-primary-dark);
}

.footer-col ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col li a {
  font-size: 0.85rem;
  color: var(--text-secondary-dark);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.footer-col li a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 24px 0 32px;
  border-top: 1px solid var(--border-dark);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted-dark);
  line-height: 1.8;
  margin-bottom: 4px;
}

.footer-bottom p:last-child {
  margin-bottom: 0;
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 900;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #0B0E1A;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(232, 184, 75, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base), box-shadow var(--transition-base);
}

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

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 28px rgba(232, 184, 75, 0.55);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-dark);
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-dark);
}

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

::selection {
  background: rgba(232, 184, 75, 0.3);
  color: var(--text-primary-dark);
}

@media (min-width: 640px) {
  .product-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .solution-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .application-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .advantage-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .legal-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-links {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (min-width: 900px) {
  .banner-visual {
    display: block;
  }

  .about-grid {
    grid-template-columns: 1fr 360px;
  }

  .product-cards {
    grid-template-columns: repeat(4, 1fr);
  }

  .solution-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .application-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .advantage-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .testimonial-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .trust-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .sitemap-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .legal-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .contact-grid {
    grid-template-columns: 1fr 1fr;
    align-items: start;
  }

  .footer-inner {
    grid-template-columns: 280px 1fr;
  }
}

@media (min-width: 1024px) {
  .banner-slide {
    padding: 64px;
  }
}

@media (max-width: 899px) {
  #main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 999;
    background: rgba(11, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-dark);
    padding: 16px 24px 24px;
    transform: translateY(-110%);
    opacity: 0;
    visibility: hidden;
    transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
  }

  [data-theme="light"] #main-nav {
    background: rgba(247, 248, 252, 0.98);
  }

  @media (prefers-color-scheme: light) {
    :root:not([data-theme="dark"]) #main-nav {
      background: rgba(247, 248, 252, 0.98);
    }
  }

  #main-nav.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    padding: 14px 16px;
    font-size: 1rem;
    border-radius: var(--radius-sm);
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: rgba(232, 184, 75, 0.12);
    border-left: 3px solid var(--primary);
  }

  .mobile-menu-btn {
    display: flex;
    margin-left: auto;
  }

  .theme-toggle-btn {
    margin-left: 4px;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding: 56px 16px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 8px;
  }

  .site-title {
    font-size: 1.05rem;
  }

  .search-area {
    padding: 0 16px 12px;
  }

  .breadcrumb-nav {
    padding: 12px 16px 0;
  }

  .hero-section {
    padding: 24px 16px 40px;
  }

  .banner-slide {
    padding: 28px 20px;
    min-height: 360px;
  }

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

  .btn {
    width: 100%;
  }

  .howto-step {
    padding: 24px 20px 24px 64px;
  }

  .howto-step::before {
    left: 18px;
    top: 24px;
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
  }

  .footer-links {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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

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

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

  .content-section {
    padding: 20px 0;
  }
}