:root {
  --bg-primary: #0b0e14;
  --bg-secondary: #111621;
  --bg-card: rgba(22, 28, 42, 0.72);
  --bg-card-hover: rgba(30, 38, 56, 0.85);
  --bg-glass: rgba(18, 24, 38, 0.55);
  --text-primary: #e8edf5;
  --text-secondary: #9aa7bd;
  --text-muted: #6b7890;
  --accent: #e63946;
  --accent-hover: #ff4d5a;
  --accent-glow: rgba(230, 57, 70, 0.35);
  --accent-soft: rgba(230, 57, 70, 0.12);
  --border: rgba(255, 255, 255, 0.07);
  --border-hover: rgba(255, 255, 255, 0.14);
  --gradient-hero: linear-gradient(135deg, #1a0a2e 0%, #16213e 30%, #0f3460 60%, #e63946 100%);
  --gradient-accent: linear-gradient(135deg, #e63946 0%, #ff6b6b 100%);
  --gradient-card: linear-gradient(145deg, rgba(30, 38, 56, 0.7), rgba(15, 20, 32, 0.9));
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --shadow-glow: 0 0 24px rgba(230, 57, 70, 0.25);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --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", "Cascadia Code", Consolas, monospace;
  --max-width: 1200px;
  --header-height: 68px;
}

[data-theme="light"] {
  --bg-primary: #f5f7fb;
  --bg-secondary: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.82);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.6);
  --text-primary: #1a1f2e;
  --text-secondary: #4a5568;
  --text-muted: #8892a4;
  --border: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(0, 0, 0, 0.16);
  --gradient-hero: linear-gradient(135deg, #667eea 0%, #764ba2 40%, #e63946 100%);
  --gradient-card: linear-gradient(145deg, rgba(255, 255, 255, 0.9), rgba(240, 244, 252, 0.95));
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.14);
  --shadow-glow: 0 0 24px rgba(230, 57, 70, 0.15);
}

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

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

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 16px;
  overflow-x: hidden;
  transition: background var(--transition-base), color var(--transition-base);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(230, 57, 70, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(15, 52, 96, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
}

[data-theme="light"] body {
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(102, 126, 234, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(230, 57, 70, 0.05) 0%, transparent 50%);
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.35;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

h1 { font-size: clamp(1.6rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.9rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.4rem); }
h4 { font-size: clamp(1rem, 1.8vw, 1.15rem); }

p {
  color: var(--text-secondary);
  margin-bottom: 0.9em;
}

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

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

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

::-webkit-scrollbar-thumb {
  background: var(--border-hover);
  border-radius: 5px;
}

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

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

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

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

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
  color: var(--text-primary);
  font-weight: 800;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.04);
  color: var(--text-primary);
}

.logo svg {
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-glow);
  transition: box-shadow var(--transition-base);
}

.logo:hover svg {
  box-shadow: 0 0 32px var(--accent-glow);
}

.logo-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

#main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

#main-nav ul {
  display: flex;
  gap: 4px;
}

#main-nav a {
  display: block;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  transition: all var(--transition-fast);
  position: relative;
}

#main-nav a::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--gradient-accent);
  border-radius: 1px;
  transform: translateX(-50%);
  transition: width var(--transition-base);
}

#main-nav a:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
}

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

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

.header-actions form {
  display: flex;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.header-actions form:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

#search-input {
  background: transparent;
  border: none;
  outline: none;
  padding: 8px 14px;
  color: var(--text-primary);
  font-size: 0.85rem;
  width: 160px;
  font-family: inherit;
  transition: width var(--transition-base);
}

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

#search-input:focus {
  width: 200px;
}

.header-actions button[type="submit"] {
  background: var(--gradient-accent);
  border: none;
  color: #fff;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: all var(--transition-fast);
}

.header-actions button[type="submit"]:hover {
  filter: brightness(1.15);
}

#theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1.1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

#theme-toggle:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: rotate(20deg) scale(1.05);
}

#menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: var(--bg-card);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

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

/* ===== Main ===== */
#main-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px 60px;
}

/* ===== Hero ===== */
#hero {
  position: relative;
  margin: 24px 0 32px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.hero-slider {
  position: relative;
  min-height: 420px;
  background: var(--gradient-hero);
  background-size: 200% 200%;
  animation: gradientShift 12s ease infinite;
}

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

.hero-slider::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 30%, rgba(230, 57, 70, 0.35) 0%, transparent 45%),
    radial-gradient(circle at 80% 70%, rgba(15, 52, 96, 0.5) 0%, transparent 45%);
  pointer-events: none;
}

.hero-slide {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 48px clamp(24px, 6vw, 72px);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease, visibility 0.7s;
  z-index: 1;
}

.hero-slide.active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  z-index: 2;
}

.hero-slide h1,
.hero-slide h2 {
  color: #fff;
  margin-bottom: 16px;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
  max-width: 720px;
}

.hero-slide p {
  color: rgba(255, 255, 255, 0.82);
  font-size: clamp(0.9rem, 1.6vw, 1.05rem);
  max-width: 640px;
  margin-bottom: 28px;
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.3);
}

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  align-self: flex-start;
  padding: 13px 30px;
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 50px;
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.hero-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: -1;
}

.hero-cta:hover {
  color: #fff;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(230, 57, 70, 0.4);
}

.hero-cta:hover::before {
  opacity: 1;
}

.hero-dots {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 10px;
  z-index: 10;
}

.hero-dots button {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  transition: all var(--transition-base);
  padding: 0;
}

.hero-dots button[aria-selected="true"] {
  width: 32px;
  border-radius: 5px;
  background: #fff;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.5);
}

.hero-dots button:hover {
  background: rgba(255, 255, 255, 0.7);
}

/* ===== Breadcrumb ===== */
#breadcrumb {
  margin: 0 0 28px;
}

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

#breadcrumb li {
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

#breadcrumb li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--text-muted);
  opacity: 0.5;
}

#breadcrumb a {
  color: var(--text-secondary);
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

#breadcrumb a:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

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

/* ===== Stats ===== */
#stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 48px;
}

.stat-item {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 20px;
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.stat-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.stat-item:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  background: var(--bg-card-hover);
}

.stat-item:hover::before {
  transform: scaleX(1);
}

.stat-number {
  display: block;
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1.2;
  margin-bottom: 6px;
  font-variant-numeric: tabular-nums;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ===== Section Common ===== */
section {
  margin-bottom: 56px;
  scroll-margin-top: calc(var(--header-height) + 20px);
}

section > h2 {
  position: relative;
  padding-left: 18px;
  margin-bottom: 24px;
}

section > h2::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 70%;
  background: var(--gradient-accent);
  border-radius: 3px;
  box-shadow: 0 0 16px var(--accent-glow);
}

section > h3 {
  margin: 28px 0 12px;
  color: var(--text-primary);
}

section > p {
  max-width: 860px;
}

/* ===== About ===== */
#about {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 4vw, 44px);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

#about:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

#about h3 {
  color: var(--accent);
  font-size: 1.15rem;
  margin-top: 28px;
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

#about h3::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent-glow);
  flex-shrink: 0;
}

/* ===== Products ===== */
#products > p {
  margin-bottom: 24px;
}

#products h3 {
  color: var(--text-primary);
  padding: 14px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: 16px 0 10px;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

#products h3:hover {
  transform: translateX(6px);
  border-left-color: var(--accent-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
}

#products > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

#products > ul li {
  position: relative;
  padding: 14px 18px 14px 44px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.92rem;
  transition: all var(--transition-base);
  backdrop-filter: blur(10px);
}

#products > ul li::before {
  content: '✓';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 50%;
  font-size: 0.7rem;
  font-weight: 700;
}

#products > ul li:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md), var(--shadow-glow);
  color: var(--text-primary);
}

/* ===== Solutions ===== */
#solutions h3 {
  color: var(--accent);
  font-size: 1.1rem;
  margin-top: 24px;
  margin-bottom: 8px;
}

#solutions > ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 20px;
}

#solutions > ul li {
  padding: 16px 20px;
  background: var(--gradient-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: center;
  font-weight: 500;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

#solutions > ul li::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

#solutions > ul li:hover {
  transform: translateY(-4px) scale(1.02);
  border-color: var(--accent);
  color: #fff;
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

#solutions > ul li:hover::after {
  opacity: 0.9;
}

#solutions > ul li span,
#solutions > ul li {
  position: relative;
  z-index: 1;
}

/* ===== Cases ===== */
#cases h3 {
  color: var(--text-primary);
  margin-top: 28px;
  margin-bottom: 8px;
  font-size: 1.08rem;
}

#cases h3::before {
  content: '📌 ';
  font-size: 0.9em;
}

#cases blockquote {
  position: relative;
  margin: 16px 0;
  padding: 20px 24px 20px 52px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--accent);
  transition: all var(--transition-base);
}

#cases blockquote::before {
  content: '"';
  position: absolute;
  left: 16px;
  top: 8px;
  font-size: 3rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.4;
  font-family: Georgia, serif;
}

#cases blockquote:hover {
  transform: translateX(6px);
  border-left-color: var(--accent-hover);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-sm);
}

#cases blockquote p {
  margin: 0;
  color: var(--text-secondary);
  font-style: italic;
  font-size: 0.92rem;
}

/* ===== News ===== */
#news > ul {
  display: grid;
  gap: 14px;
}

#news > ul > li {
  position: relative;
  padding: 20px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

#news > ul > li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--gradient-accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform var(--transition-base);
}

#news > ul > li:hover {
  transform: translateY(-4px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
  background: var(--bg-card-hover);
}

#news > ul > li:hover::before {
  transform: scaleY(1);
}

#news time {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  padding: 3px 10px;
  background: var(--accent-soft);
  border-radius: 50px;
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

#news h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
}

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

#news h3 a:hover {
  color: var(--accent);
}

#news p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* ===== Articles ===== */
#articles > p {
  margin-bottom: 24px;
}

#articles > article {
  position: relative;
  padding: 24px 26px;
  margin-bottom: 16px;
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  overflow: hidden;
}

#articles > article::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

#articles > article:hover {
  transform: translateY(-6px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-lg);
  background: var(--bg-card-hover);
}

#articles > article:hover::before {
  transform: scaleX(1);
}

#articles h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

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

#articles h3 a:hover {
  color: var(--accent);
}

#articles time {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  font-variant-numeric: tabular-nums;
}

#articles article > p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 14px;
}

#articles article > a:last-child {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  padding: 6px 16px;
  border: 1px solid var(--accent);
  border-radius: 50px;
  transition: all var(--transition-fast);
}

#articles article > a:last-child::after {
  content: '→';
  transition: transform var(--transition-fast);
}

#articles article > a:last-child:hover {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 6px 20px var(--accent-glow);
}

#articles article > a:last-child:hover::after {
  transform: translateX(4px);
}

/* ===== FAQ ===== */
#faq details {
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 12px;
  overflow: hidden;
  transition: all var(--transition-base);
}

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

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

#faq summary {
  padding: 18px 24px;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  transition: color var(--transition-fast);
  position: relative;
}

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

#faq summary::after {
  content: '+';
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 50%;
  font-size: 1.1rem;
  font-weight: 400;
  transition: all var(--transition-base);
  line-height: 1;
}

#faq details[open] summary::after {
  transform: rotate(45deg);
  background: var(--accent);
  color: #fff;
}

#faq summary:hover {
  color: var(--accent);
}

#faq details > p {
  padding: 0 24px 20px;
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  animation: fadeSlideDown 0.35s ease;
}

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

/* ===== HowTo ===== */
#howto {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 4vw, 44px);
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

#howto:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

#howto h3 {
  color: var(--accent);
  font-size: 1.08rem;
  margin-top: 28px;
  margin-bottom: 12px;
  padding-left: 16px;
  position: relative;
}

#howto h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: var(--gradient-accent);
  border-radius: 2px;
}

#howto > ul {
  display: grid;
  gap: 10px;
  margin-bottom: 16px;
}

#howto > ul > li {
  position: relative;
  padding: 12px 18px 12px 42px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

#howto > ul > li::before {
  content: '▸';
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--accent);
  font-size: 0.85rem;
}

#howto > ul > li:hover {
  border-color: var(--border-hover);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

#howto ol {
  counter-reset: step-counter;
  display: grid;
  gap: 16px;
  margin: 16px 0;
}

#howto ol > li {
  counter-increment: step-counter;
  position: relative;
  padding: 20px 24px 20px 68px;
  background: var(--bg-glass);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  list-style: none;
}

#howto ol > li::before {
  content: counter(step-counter);
  position: absolute;
  left: 20px;
  top: 20px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-accent);
  color: #fff;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.9rem;
  box-shadow: 0 4px 14px var(--accent-glow);
}

#howto ol > li:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-md);
}

#howto h4 {
  color: var(--text-primary);
  font-size: 1rem;
  margin-bottom: 6px;
}

#howto ol > li p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* ===== Contact ===== */
#contact address {
  font-style: normal;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 14px;
  margin: 20px 0 28px;
}

#contact address p {
  padding: 16px 20px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: all var(--transition-base);
}

#contact address p:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

#contact address strong {
  color: var(--text-primary);
  margin-right: 6px;
}

#contact address a {
  color: var(--accent);
  font-weight: 500;
}

#contact address a:hover {
  text-decoration: underline;
}

#contact h3 {
  color: var(--accent);
  font-size: 1.08rem;
  margin-top: 24px;
  margin-bottom: 8px;
}

/* ===== Sitemap ===== */
#sitemap > ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 10px;
}

#sitemap > ul li a {
  display: block;
  padding: 12px 18px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.88rem;
  text-align: center;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

#sitemap > ul li a:hover {
  color: #fff;
  background: var(--gradient-accent);
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px var(--accent-glow);
}

/* ===== Links ===== */
#links > ul {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#links > ul li a {
  display: inline-block;
  padding: 10px 22px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: all var(--transition-fast);
  backdrop-filter: blur(10px);
}

#links > ul li a:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-soft);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* ===== Legal ===== */
#legal {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: clamp(24px, 4vw, 44px);
}

#legal h3 {
  color: var(--text-primary);
  font-size: 1.05rem;
  margin-top: 24px;
  margin-bottom: 8px;
  padding-left: 14px;
  position: relative;
}

#legal h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: var(--accent);
  border-radius: 2px;
}

#legal h3:first-of-type {
  margin-top: 0;
}

/* ===== Meta Info ===== */
#meta-info {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
  padding: 20px 24px;
  background: var(--bg-glass);
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

#meta-info p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

#meta-info strong {
  color: var(--text-secondary);
}

/* ===== Footer ===== */
#site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 40px 20px;
  margin-top: 20px;
  position: relative;
  overflow: hidden;
}

#site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-accent);
  opacity: 0.6;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.footer-inner p {
  margin-bottom: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-inner a {
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-inner a:hover {
  color: var(--accent);
}

/* ===== Back to Top ===== */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  color: var(--text-primary);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.8);
  transition: all var(--transition-base);
  z-index: 999;
  box-shadow: var(--shadow-md);
}

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

#back-to-top:hover {
  background: var(--gradient-accent);
  color: #fff;
  border-color: transparent;
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 12px 32px var(--accent-glow);
}

/* ===== Scroll Reveal ===== */
.reveal {
  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;
}

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

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  #main-nav a {
    padding: 8px 10px;
    font-size: 0.85rem;
  }

  #search-input {
    width: 120px;
  }

  #search-input:focus {
    width: 150px;
  }
}

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

  #main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--bg-glass);
    backdrop-filter: blur(24px) saturate(180%);
    -webkit-backdrop-filter: blur(24px) saturate(180%);
    border-bottom: 1px solid var(--border);
    padding: 12px 20px;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 999;
    box-shadow: var(--shadow-lg);
  }

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

  #main-nav ul {
    flex-direction: column;
    gap: 4px;
  }

  #main-nav a {
    padding: 12px 16px;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
  }

  #main-nav a::after {
    display: none;
  }

  #menu-toggle {
    display: flex;
  }

  .header-actions form {
    display: none;
  }

  .hero-slider {
    min-height: 360px;
  }

  .hero-slide {
    padding: 36px 24px;
  }

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

  .stat-item {
    padding: 22px 16px;
  }
}

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

  #main-content {
    padding: 0 14px 40px;
  }

  .header-inner {
    padding: 0 14px;
    gap: 12px;
  }

  .logo-text {
    font-size: 1.05rem;
  }

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

  #hero {
    margin: 16px 0 24px;
    border-radius: var(--radius-lg);
  }

  .hero-slider {
    min-height: 320px;
  }

  .hero-slide {
    padding: 28px 20px;
  }

  .hero-slide h1 {
    font-size: 1.35rem;
  }

  .hero-slide h2 {
    font-size: 1.2rem;
  }

  .hero-cta {
    padding: 11px 22px;
    font-size: 0.88rem;
  }

  .hero-dots {
    bottom: 16px;
  }

  #stats {
    gap: 10px;
  }

  .stat-item {
    padding: 18px 12px;
    border-radius: var(--radius-md);
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }

  section {
    margin-bottom: 40px;
  }

  section > h2 {
    padding-left: 14px;
    margin-bottom: 18px;
  }

  #about,
  #howto,
  #legal {
    padding: 22px 18px;
    border-radius: var(--radius-lg);
  }

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

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

  #articles > article {
    padding: 20px 18px;
  }

  #news > ul > li {
    padding: 16px 18px;
  }

  #faq summary {
    padding: 15px 18px;
    font-size: 0.9rem;
  }

  #faq details > p {
    padding: 0 18px 16px;
  }

  #contact address {
    grid-template-columns: 1fr;
  }

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

  #links > ul li a {
    padding: 8px 16px;
    font-size: 0.82rem;
  }

  #meta-info {
    grid-template-columns: 1fr;
    padding: 16px 18px;
  }

  #howto ol > li {
    padding: 18px 18px 18px 60px;
  }

  #howto ol > li::before {
    left: 16px;
    top: 18px;
    width: 28px;
    height: 28px;
    font-size: 0.82rem;
  }

  #back-to-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 380px) {
  .hero-slide h1 {
    font-size: 1.2rem;
  }

  .hero-slide p {
    font-size: 0.85rem;
  }

  #stats {
    grid-template-columns: 1fr 1fr;
  }

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

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

/* ===== Accessibility ===== */
@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 (prefers-contrast: high) {
  :root {
    --border: rgba(255, 255, 255, 0.25);
    --text-secondary: #c5cede;
  }

  [data-theme="light"] {
    --border: rgba(0, 0, 0, 0.25);
    --text-secondary: #2d3748;
  }
}

/* ===== Focus Visible ===== */
a:focus-visible,
button:focus-visible,
input:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ===== Print ===== */
@media print {
  #site-header,
  #back-to-top,
  .hero-dots,
  #main-nav,
  .header-actions {
    display: none !important;
  }

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

  .hero-slider {
    background: #eee;
    min-height: auto;
  }

  .hero-slide {
    position: relative;
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .hero-slide:not(.active) {
    display: none;
  }
}