:root {
  --primary: #e94560;
  --primary-light: #ff6b81;
  --primary-dark: #c23152;
  --secondary: #533483;
  --secondary-light: #7b5ea7;
  --accent: #0f3460;
  --bg-dark: #1a1a2e;
  --bg-darker: #16213e;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-glass: rgba(255, 255, 255, 0.08);
  --text-primary: #f5f5f5;
  --text-secondary: #b8b8d0;
  --text-muted: #8888a0;
  --border-glass: rgba(255, 255, 255, 0.12);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 24px rgba(233, 69, 96, 0.3);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --transition-fast: 0.2s ease;
  --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: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.75;
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(233, 69, 96, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(83, 52, 131, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(15, 52, 96, 0.15) 0%, transparent 70%);
  background-attachment: fixed;
}

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

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

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

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

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

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

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

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

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

ul,
ol {
  list-style: none;
}

/* ============================================
   HEADER
   ============================================ */

header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(26, 26, 46, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-glass);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

header > div {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 24px;
  height: 72px;
}

header > div > a {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  color: var(--text-primary);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  transition: transform var(--transition-base), opacity var(--transition-fast);
}

header > div > a:hover {
  transform: scale(1.03);
  color: var(--text-primary);
}

header > div > a svg {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  box-shadow: var(--shadow-sm), 0 0 16px rgba(233, 69, 96, 0.2);
  transition: box-shadow var(--transition-base);
}

header > div > a:hover svg {
  box-shadow: var(--shadow-md), 0 0 24px rgba(233, 69, 96, 0.4);
}

header > div > a strong {
  background: linear-gradient(135deg, var(--text-primary), var(--primary-light));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

/* Navigation */
header nav {
  flex: 1;
  min-width: 0;
}

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

header nav ul::-webkit-scrollbar {
  display: none;
}

header nav ul li {
  flex-shrink: 0;
}

header nav ul li a {
  display: block;
  padding: 8px 14px;
  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-fast), background var(--transition-fast);
}

header nav ul li a::after {
  content: "";
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary-light));
  border-radius: 2px;
  transition: transform var(--transition-base);
}

header nav ul li a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

header nav ul li a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

/* Search Form */
header form[role="search"] {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
  position: relative;
}

header form[role="search"] label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

header form[role="search"] input[type="search"] {
  width: 200px;
  padding: 9px 16px;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  outline: none;
  transition: all var(--transition-base);
  -webkit-appearance: none;
  appearance: none;
}

header form[role="search"] input[type="search"]::placeholder {
  color: var(--text-muted);
}

header form[role="search"] input[type="search"]:focus {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(233, 69, 96, 0.15);
  width: 240px;
}

header form[role="search"] button {
  padding: 9px 18px;
  font-size: 0.85rem;
  font-family: var(--font-sans);
  font-weight: 600;
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border: 1px solid var(--primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-base);
}

header form[role="search"] button:hover {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  box-shadow: var(--shadow-glow);
  transform: translateY(-1px);
}

header form[role="search"] button:active {
  transform: translateY(0);
}

/* ============================================
   MAIN LAYOUT
   ============================================ */

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

section {
  padding: 64px 0;
  animation: fadeInUp 0.6s ease both;
}

section:nth-child(odd) {
  animation-delay: 0.05s;
}

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

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

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

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 16px rgba(233, 69, 96, 0.2);
  }
  50% {
    box-shadow: 0 0 32px rgba(233, 69, 96, 0.45);
  }
}

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

/* ============================================
   HERO SECTION
   ============================================ */

#hero {
  position: relative;
  padding: 80px 0 64px;
  text-align: center;
  background: linear-gradient(160deg, rgba(233, 69, 96, 0.12) 0%, rgba(83, 52, 131, 0.15) 40%, rgba(15, 52, 96, 0.1) 100%);
  border-radius: var(--radius-xl);
  margin-top: 32px;
  overflow: hidden;
  border: 1px solid var(--border-glass);
  box-shadow: var(--shadow-lg);
}

#hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background:
    radial-gradient(circle at 30% 40%, rgba(233, 69, 96, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 70% 60%, rgba(83, 52, 131, 0.15) 0%, transparent 40%);
  animation: floatBg 12s ease-in-out infinite;
  pointer-events: none;
}

@keyframes floatBg {
  0%, 100% { transform: translate(0, 0) rotate(0deg); }
  33% { transform: translate(2%, -2%) rotate(1deg); }
  66% { transform: translate(-2%, 2%) rotate(-1deg); }
}

#hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(26, 26, 46, 0.4) 100%);
  pointer-events: none;
}

#hero > * {
  position: relative;
  z-index: 1;
}

#hero h1 {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
  padding: 0 24px;
  background: linear-gradient(135deg, #ffffff 0%, var(--primary-light) 50%, var(--secondary-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.01em;
}

#hero p {
  max-width: 800px;
  margin: 0 auto 20px;
  padding: 0 24px;
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.85;
}

#hero > div {
  margin-top: 40px;
  padding: 0 24px;
}

#hero > div svg {
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg), 0 0 40px rgba(233, 69, 96, 0.15);
  transition: transform var(--transition-slow), box-shadow var(--transition-slow);
}

#hero > div svg:hover {
  transform: scale(1.02) translateY(-4px);
  box-shadow: var(--shadow-lg), 0 0 60px rgba(233, 69, 96, 0.25);
}

/* ============================================
   SECTION HEADINGS
   ============================================ */

section > h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 700;
  margin-bottom: 28px;
  padding-bottom: 16px;
  position: relative;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

section > h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 64px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--secondary-light));
  border-radius: 3px;
  transition: width var(--transition-slow);
}

section:hover > h2::after {
  width: 120px;
}

section > h3 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-light);
  margin: 32px 0 14px;
  padding-left: 14px;
  border-left: 3px solid var(--primary);
  line-height: 1.4;
}

section > p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  font-size: 1rem;
  line-height: 1.85;
}

/* ============================================
   BRAND SECTION
   ============================================ */

#brand {
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  margin-top: 32px;
  box-shadow: var(--shadow-md);
  transition: box-shadow var(--transition-base), border-color var(--transition-base);
}

#brand:hover {
  box-shadow: var(--shadow-lg), 0 0 40px rgba(83, 52, 131, 0.12);
  border-color: rgba(233, 69, 96, 0.2);
}

#brand h3 {
  color: var(--primary-light);
}

#brand p {
  color: var(--text-secondary);
}

/* ============================================
   PRODUCTS SECTION
   ============================================ */

#products {
  padding: 64px 0;
}

#products ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
  margin: 24px 0 32px;
}

#products ul li {
  position: relative;
  padding: 20px 24px 20px 48px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.7;
  transition: all var(--transition-base);
  overflow: hidden;
}

#products ul li::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 10px;
  height: 10px;
  background: linear-gradient(135deg, var(--primary), var(--secondary-light));
  border-radius: 50%;
  box-shadow: 0 0 12px rgba(233, 69, 96, 0.5);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#products ul li::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(233, 69, 96, 0.06), rgba(83, 52, 131, 0.06));
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

#products ul li:hover {
  transform: translateY(-4px);
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md), 0 0 24px rgba(233, 69, 96, 0.12);
  color: var(--text-primary);
}

#products ul li:hover::before {
  transform: translateY(-50%) scale(1.3);
  box-shadow: 0 0 20px rgba(233, 69, 96, 0.8);
}

#products ul li:hover::after {
  opacity: 1;
}

/* ============================================
   SOLUTIONS SECTION
   ============================================ */

#solutions {
  background: linear-gradient(160deg, rgba(83, 52, 131, 0.08) 0%, rgba(15, 52, 96, 0.08) 100%);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  margin-top: 32px;
  border: 1px solid var(--border-glass);
}

#solutions h3 {
  color: var(--secondary-light);
  border-left-color: var(--secondary);
}

#solutions p {
  color: var(--text-secondary);
}

/* ============================================
   CASES SECTION
   ============================================ */

#cases {
  padding: 64px 0;
}

#cases h3 {
  color: var(--primary-light);
}

#cases > p {
  color: var(--text-secondary);
}

#cases blockquote {
  position: relative;
  margin: 20px 0;
  padding: 24px 28px 24px 56px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary);
  transition: all var(--transition-base);
}

#cases blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 16px;
  font-size: 2.4rem;
  line-height: 1;
  color: var(--primary);
  opacity: 0.5;
  font-family: Georgia, serif;
}

#cases blockquote p {
  color: var(--text-secondary);
  font-style: italic;
  font-size: 0.95rem;
  line-height: 1.8;
}

#cases blockquote:hover {
  transform: translateX(6px);
  border-left-color: var(--primary-light);
  box-shadow: var(--shadow-md), 0 0 24px rgba(233, 69, 96, 0.1);
  background: rgba(255, 255, 255, 0.08);
}

/* ============================================
   NEWS SECTION
   ============================================ */

#news {
  padding: 64px 0;
}

#news > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

#news article {
  position: relative;
  padding: 24px 28px;
  margin-bottom: 16px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  overflow: hidden;
}

#news article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--primary), var(--secondary-light));
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#news article:hover {
  transform: translateY(-3px) translateX(4px);
  border-color: rgba(233, 69, 96, 0.25);
  box-shadow: var(--shadow-md), 0 0 24px rgba(233, 69, 96, 0.08);
  background: rgba(255, 255, 255, 0.08);
}

#news article:hover::before {
  transform: scaleY(1);
}

#news article h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 8px;
  padding: 0;
  border: none;
  line-height: 1.5;
}

#news article h3 a {
  color: var(--text-primary);
  transition: color var(--transition-fast);
}

#news article h3 a:hover {
  color: var(--primary-light);
}

#news article p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  line-height: 1.7;
}

#news article p:nth-of-type(2) {
  color: var(--text-secondary);
  margin-bottom: 12px;
}

#news article > a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary-light);
  padding: 6px 0;
  position: relative;
  transition: color var(--transition-fast), gap var(--transition-base);
}

#news article > a::after {
  content: "→";
  font-size: 1rem;
  transition: transform var(--transition-base);
}

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

#news article > a:hover::after {
  transform: translateX(3px);
}

/* ============================================
   HOWTO SECTION
   ============================================ */

#howto {
  background: linear-gradient(160deg, rgba(15, 52, 96, 0.12) 0%, rgba(233, 69, 96, 0.06) 100%);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  margin-top: 32px;
  border: 1px solid var(--border-glass);
}

#howto h3 {
  color: var(--primary-light);
}

#howto ul,
#howto ol {
  margin: 16px 0 24px;
  padding-left: 0;
}

#howto ul li {
  position: relative;
  padding: 8px 0 8px 28px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

#howto ul li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 16px;
  width: 8px;
  height: 8px;
  background: var(--primary);
  border-radius: 2px;
  transform: rotate(45deg);
  transition: transform var(--transition-base), background var(--transition-base);
}

#howto ul li:hover {
  color: var(--text-primary);
  transform: translateX(4px);
}

#howto ul li:hover::before {
  transform: rotate(45deg) scale(1.3);
  background: var(--primary-light);
}

#howto ol {
  counter-reset: step-counter;
}

#howto ol li {
  position: relative;
  padding: 12px 0 12px 48px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.75;
  counter-increment: step-counter;
  transition: color var(--transition-fast), transform var(--transition-fast);
}

#howto ol li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 10px;
  width: 30px;
  height: 30px;
  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: 50%;
  box-shadow: 0 2px 8px rgba(233, 69, 96, 0.3);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

#howto ol li:hover {
  color: var(--text-primary);
  transform: translateX(4px);
}

#howto ol li:hover::before {
  transform: scale(1.15);
  box-shadow: 0 4px 16px rgba(233, 69, 96, 0.5);
}

#howto > p {
  color: var(--text-secondary);
}

/* ============================================
   FAQ SECTION
   ============================================ */

#faq {
  padding: 64px 0;
}

#faq details {
  margin-bottom: 12px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

#faq details:hover {
  border-color: rgba(233, 69, 96, 0.25);
  box-shadow: var(--shadow-sm), 0 0 20px rgba(233, 69, 96, 0.06);
}

#faq details[open] {
  border-color: rgba(233, 69, 96, 0.3);
  box-shadow: var(--shadow-md), 0 0 28px rgba(233, 69, 96, 0.1);
  background: rgba(255, 255, 255, 0.08);
}

#faq summary {
  position: relative;
  padding: 18px 48px 18px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  transition: color var(--transition-fast), background var(--transition-fast);
  user-select: none;
}

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

#faq summary::after {
  content: "";
  position: absolute;
  right: 24px;
  top: 50%;
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--primary);
  border-bottom: 2px solid var(--primary);
  transform: translateY(-70%) rotate(45deg);
  transition: transform var(--transition-base), border-color var(--transition-fast);
}

#faq details[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
  border-color: var(--primary-light);
}

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

#faq details p {
  padding: 0 24px 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.85;
  animation: fadeIn 0.3s ease;
}

/* ============================================
   KNOWLEDGE SECTION
   ============================================ */

#knowledge {
  background: linear-gradient(160deg, rgba(83, 52, 131, 0.1) 0%, rgba(15, 52, 96, 0.08) 100%);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  margin-top: 32px;
  border: 1px solid var(--border-glass);
}

#knowledge h3 {
  color: var(--secondary-light);
  border-left-color: var(--secondary);
}

#knowledge p {
  color: var(--text-secondary);
}

/* ============================================
   CONTACT SECTION
   ============================================ */

#contact {
  padding: 64px 0;
}

#contact > p {
  color: var(--text-secondary);
  margin-bottom: 20px;
}

#contact ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
  margin: 24px 0 32px;
}

#contact ul li {
  padding: 16px 20px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

#contact ul li::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

#contact ul li:hover {
  transform: translateY(-3px);
  border-color: rgba(233, 69, 96, 0.25);
  box-shadow: var(--shadow-md), 0 0 20px rgba(233, 69, 96, 0.08);
  color: var(--text-primary);
}

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

#contact h3 {
  color: var(--primary-light);
}

#contact p {
  color: var(--text-secondary);
}

/* ============================================
   SITEMAP SECTION
   ============================================ */

#sitemap {
  padding: 64px 0;
}

#sitemap ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap ul li a {
  display: inline-block;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: 50px;
  transition: all var(--transition-base);
}

#sitemap ul li a:hover {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: var(--primary);
  box-shadow: var(--shadow-glow);
  transform: translateY(-2px);
}

/* ============================================
   LINKS SECTION
   ============================================ */

#links {
  padding: 64px 0;
}

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

#links ul li a {
  display: inline-block;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

#links ul li a:hover {
  color: var(--primary-light);
  border-color: rgba(233, 69, 96, 0.3);
  background: rgba(233, 69, 96, 0.06);
  transform: translateY(-2px);
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  background: linear-gradient(180deg, transparent 0%, rgba(15, 52, 96, 0.15) 100%);
  border-top: 1px solid var(--border-glass);
  padding: 48px 24px;
  margin-top: 32px;
}

footer > section {
  max-width: 1280px;
  margin: 0 auto;
  text-align: center;
  padding: 0;
  animation: none;
}

footer > section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 20px;
  padding-bottom: 12px;
  position: relative;
  display: inline-block;
}

footer > section h2::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--primary), var(--secondary-light));
  border-radius: 2px;
}

footer > section p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 10px;
  line-height: 1.7;
}

footer > section ul {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin: 20px 0;
}

footer > section ul li a {
  color: var(--text-muted);
  font-size: 0.875rem;
  position: relative;
  transition: color var(--transition-fast);
}

footer > section ul li a::after {
  content: "";
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 100%;
  height: 1px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition-base);
}

footer > section ul li a:hover {
  color: var(--primary-light);
}

footer > section ul li a:hover::after {
  transform: scaleX(1);
}

/* ============================================
   RESPONSIVE — TABLET (max-width: 1024px)
   ============================================ */

@media (max-width: 1024px) {
  header > div {
    gap: 16px;
    padding: 0 20px;
    height: 68px;
  }

  header form[role="search"] input[type="search"] {
    width: 160px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 190px;
  }

  main {
    padding: 0 20px 60px;
  }

  section {
    padding: 48px 0;
  }

  #hero {
    padding: 64px 0 48px;
  }

  #brand,
  #solutions,
  #howto,
  #knowledge {
    padding: 40px 32px;
  }

  #products ul {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  }

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

/* ============================================
   RESPONSIVE — MOBILE (max-width: 768px)
   ============================================ */

@media (max-width: 768px) {
  header > div {
    flex-wrap: wrap;
    height: auto;
    padding: 12px 16px;
    gap: 10px;
  }

  header > div > a {
    font-size: 1rem;
  }

  header > div > a svg {
    width: 34px;
    height: 34px;
  }

  header nav {
    order: 3;
    width: 100%;
    flex: none;
  }

  header nav ul {
    gap: 2px;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
  }

  header nav ul li a {
    padding: 7px 12px;
    font-size: 0.8rem;
  }

  header form[role="search"] {
    order: 2;
    margin-left: auto;
  }

  header form[role="search"] input[type="search"] {
    width: 130px;
    font-size: 0.8rem;
    padding: 7px 12px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 160px;
  }

  header form[role="search"] button {
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  main {
    padding: 0 16px 48px;
  }

  section {
    padding: 40px 0;
  }

  section > h2 {
    font-size: 1.3rem;
    margin-bottom: 20px;
  }

  section > h3 {
    font-size: 1.05rem;
    margin: 24px 0 12px;
  }

  #hero {
    padding: 48px 0 36px;
    border-radius: var(--radius-lg);
    margin-top: 20px;
  }

  #hero h1 {
    font-size: 1.4rem;
    padding: 0 16px;
    margin-bottom: 18px;
  }

  #hero p {
    font-size: 0.9rem;
    padding: 0 16px;
    margin-bottom: 16px;
  }

  #hero > div {
    margin-top: 28px;
    padding: 0 16px;
  }

  #brand,
  #solutions,
  #howto,
  #knowledge {
    padding: 32px 20px;
    border-radius: var(--radius-lg);
    margin-top: 20px;
  }

  #products ul {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  #products ul li {
    padding: 16px 20px 16px 42px;
    font-size: 0.9rem;
  }

  #products ul li::before {
    left: 18px;
    width: 8px;
    height: 8px;
  }

  #cases blockquote {
    padding: 20px 20px 20px 44px;
  }

  #cases blockquote::before {
    left: 14px;
    font-size: 2rem;
  }

  #news article {
    padding: 20px 20px;
  }

  #news article h3 {
    font-size: 0.95rem;
  }

  #howto ol li {
    padding: 10px 0 10px 42px;
    font-size: 0.9rem;
  }

  #howto ol li::before {
    width: 26px;
    height: 26px;
    font-size: 0.75rem;
    top: 9px;
  }

  #faq summary {
    padding: 15px 44px 15px 20px;
    font-size: 0.9rem;
  }

  #faq summary::after {
    right: 20px;
    width: 8px;
    height: 8px;
  }

  #faq details p {
    padding: 0 20px 16px;
    font-size: 0.85rem;
  }

  #contact ul {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  #contact ul li {
    padding: 14px 16px;
    font-size: 0.85rem;
  }

  #sitemap ul {
    gap: 8px;
  }

  #sitemap ul li a {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  #links ul {
    gap: 8px;
  }

  #links ul li a {
    padding: 8px 16px;
    font-size: 0.85rem;
  }

  footer {
    padding: 32px 16px;
  }

  footer > section ul {
    gap: 14px;
  }
}

/* ============================================
   RESPONSIVE — SMALL MOBILE (max-width: 480px)
   ============================================ */

@media (max-width: 480px) {
  html {
    font-size: 15px;
  }

  header > div {
    padding: 10px 12px;
  }

  header > div > a strong {
    font-size: 0.95rem;
  }

  header nav ul li a {
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  header form[role="search"] input[type="search"] {
    width: 100px;
    font-size: 0.75rem;
    padding: 6px 10px;
  }

  header form[role="search"] input[type="search"]:focus {
    width: 120px;
  }

  header form[role="search"] button {
    padding: 6px 10px;
    font-size: 0.75rem;
  }

  main {
    padding: 0 12px 40px;
  }

  #hero {
    padding: 36px 0 28px;
    border-radius: var(--radius-md);
  }

  #hero h1 {
    font-size: 1.2rem;
  }

  #hero p {
    font-size: 0.85rem;
  }

  #brand,
  #solutions,
  #howto,
  #knowledge {
    padding: 24px 16px;
  }

  section > h2 {
    font-size: 1.15rem;
  }

  section > h3 {
    font-size: 0.95rem;
  }

  #products ul li {
    padding: 14px 16px 14px 38px;
    font-size: 0.85rem;
  }

  #cases blockquote {
    padding: 16px 16px 16px 40px;
  }

  #news article {
    padding: 16px 16px;
  }

  #news article h3 {
    font-size: 0.9rem;
  }

  #news article p {
    font-size: 0.8rem;
  }

  #faq summary {
    padding: 13px 40px 13px 16px;
    font-size: 0.85rem;
  }

  #faq details p {
    padding: 0 16px 14px;
    font-size: 0.8rem;
  }

  #sitemap ul li a,
  #links ul li a {
    padding: 7px 14px;
    font-size: 0.8rem;
  }

  footer > section ul {
    flex-direction: column;
    gap: 10px;
  }
}

/* ============================================
   ACCESSIBILITY — REDUCED MOTION
   ============================================ */

@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;
  }
}

/* ============================================
   LIGHT MODE SUPPORT
   ============================================ */

@media (prefers-color-scheme: light) {
  :root {
    --bg-dark: #f0f2f5;
    --bg-darker: #e4e7ec;
    --bg-card: rgba(0, 0, 0, 0.03);
    --bg-glass: rgba(255, 255, 255, 0.7);
    --text-primary: #1a1a2e;
    --text-secondary: #4a4a6a;
    --text-muted: #8888a0;
    --border-glass: rgba(0, 0, 0, 0.08);
    --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, 0.1);
    --shadow-glow: 0 0 24px rgba(233, 69, 96, 0.2);
  }

  body {
    background-image:
      radial-gradient(ellipse at 20% 0%, rgba(233, 69, 96, 0.05) 0%, transparent 50%),
      radial-gradient(ellipse at 80% 100%, rgba(83, 52, 131, 0.06) 0%, transparent 50%),
      radial-gradient(ellipse at 50% 50%, rgba(15, 52, 96, 0.04) 0%, transparent 70%);
  }

  header {
    background: rgba(240, 242, 245, 0.8);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
  }

  header > div > a strong {
    background: linear-gradient(135deg, var(--text-primary), var(--primary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  header form[role="search"] input[type="search"] {
    background: rgba(0, 0, 0, 0.04);
  }

  header form[role="search"] input[type="search"]:focus {
    background: rgba(0, 0, 0, 0.06);
  }

  #hero h1 {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 50%, var(--secondary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
  }

  #hero::after {
    background: linear-gradient(180deg, transparent 60%, rgba(240, 242, 245, 0.4) 100%);
  }

  #products ul li:hover {
    color: var(--text-primary);
  }

  #faq details[open] {
    background: rgba(255, 255, 255, 0.9);
  }

  #faq summary:hover {
    background: rgba(0, 0, 0, 0.02);
  }

  #news article:hover {
    background: rgba(255, 255, 255, 0.9);
  }

  #cases blockquote:hover {
    background: rgba(255, 255, 255, 0.9);
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  header,
  footer,
  #links,
  #sitemap {
    display: none;
  }

  body {
    background: #fff;
    color: #000;
    font-size: 12pt;
  }

  main {
    max-width: 100%;
    padding: 0;
  }

  section {
    padding: 16px 0;
    page-break-inside: avoid;
    animation: none;
  }

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

  #faq details {
    border: 1px solid #ccc;
  }

  #faq details p {
    display: block;
  }
}

/* ============================================
   FOCUS VISIBLE ENHANCEMENTS
   ============================================ */

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

/* ============================================
   UTILITY — SMOOTH SCROLL OFFSET
   ============================================ */

[id] {
  scroll-margin-top: 88px;
}

@media (max-width: 768px) {
  [id] {
    scroll-margin-top: 120px;
  }
}