:root {
  --bg-primary: #0f0f1a;
  --bg-secondary: #1a1a2e;
  --bg-tertiary: #16213e;
  --bg-card: rgba(26, 26, 46, 0.72);
  --bg-card-hover: rgba(30, 30, 56, 0.9);
  --bg-glass: rgba(255, 255, 255, 0.06);
  --bg-glass-border: rgba(255, 255, 255, 0.12);
  --accent: #e94560;
  --accent-hover: #ff5c77;
  --accent-soft: rgba(233, 69, 96, 0.15);
  --accent-glow: rgba(233, 69, 96, 0.45);
  --gradient-hero: linear-gradient(135deg, #1a1a2e 0%, #16213e 40%, #0f3460 70%, #533483 100%);
  --gradient-accent: linear-gradient(135deg, #e94560 0%, #ff6b9d 50%, #c94b8c 100%);
  --gradient-card: linear-gradient(145deg, rgba(233, 69, 96, 0.08), rgba(83, 52, 131, 0.08));
  --text-primary: #f0f0f5;
  --text-secondary: #b8b8cc;
  --text-muted: #7a7a94;
  --border-color: rgba(255, 255, 255, 0.08);
  --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(233, 69, 96, 0.3);
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 999px;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --header-height: 72px;
  --content-max: 1240px;
}

body.light-mode {
  --bg-primary: #f4f5fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef0f8;
  --bg-card: rgba(255, 255, 255, 0.8);
  --bg-card-hover: rgba(255, 255, 255, 0.95);
  --bg-glass: rgba(255, 255, 255, 0.55);
  --bg-glass-border: rgba(26, 26, 46, 0.1);
  --gradient-hero: linear-gradient(135deg, #e8eaf6 0%, #d4d8f0 40%, #c5cae9 70%, #e1d5f0 100%);
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a66;
  --text-muted: #8a8aa0;
  --border-color: rgba(26, 26, 46, 0.1);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.08);
  --shadow-md: 0 8px 24px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.14);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--bg-primary);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(233, 69, 96, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(83, 52, 131, 0.1) 0%, transparent 50%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-base), color var(--transition-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

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

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, 3.4vw, 2.6rem); }
h2 { font-size: clamp(1.4rem, 2.6vw, 2rem); }
h3 { font-size: clamp(1.15rem, 1.8vw, 1.4rem); }
h4 { font-size: clamp(1rem, 1.4vw, 1.15rem); }

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

main {
  display: block;
}

section {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 56px 24px;
}

section > h2 {
  position: relative;
  margin-bottom: 28px;
  padding-left: 18px;
}

section > h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 5px;
  height: 1.2em;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

section > h3 {
  margin-top: 32px;
  margin-bottom: 14px;
  color: var(--text-primary);
}

section ul:not(.breadcrumb) {
  padding-left: 0;
}

section ul:not(.breadcrumb) li {
  position: relative;
  padding-left: 22px;
  margin-bottom: 10px;
  color: var(--text-secondary);
}

section ul:not(.breadcrumb) li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}

section ol:not(.breadcrumb) {
  counter-reset: step;
  padding-left: 0;
}

section ol:not(.breadcrumb) li {
  position: relative;
  counter-increment: step;
  padding-left: 44px;
  margin-bottom: 16px;
  color: var(--text-secondary);
  min-height: 32px;
}

section ol:not(.breadcrumb) li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-accent);
  border-radius: 50%;
  box-shadow: 0 4px 12px var(--accent-glow);
}

blockquote {
  position: relative;
  margin: 20px 0;
  padding: 22px 26px 22px 56px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-glass-border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

blockquote::before {
  content: "\201C";
  position: absolute;
  left: 18px;
  top: 6px;
  font-size: 3rem;
  line-height: 1;
  color: var(--accent);
  opacity: 0.5;
  font-family: Georgia, serif;
}

blockquote:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

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

#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 15, 26, 0.72);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition-base), box-shadow var(--transition-base);
}

body.light-mode #site-header {
  background: rgba(255, 255, 255, 0.72);
}

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

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

.logo-area a {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
  font-weight: 800;
}

.logo-area svg {
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 14px rgba(233, 69, 96, 0.35);
  transition: transform var(--transition-base);
}

.logo-area a:hover svg {
  transform: rotate(-6deg) scale(1.06);
}

.site-name {
  font-size: 1.2rem;
  letter-spacing: 0.02em;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

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

#main-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  justify-content: center;
}

#main-nav a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

#main-nav a:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
  transform: translateY(-1px);
}

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

#search-form {
  display: flex;
  align-items: center;
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

#search-form input[type="search"] {
  width: 160px;
  padding: 8px 14px;
  font-size: 0.85rem;
  color: var(--text-primary);
  background: transparent;
  border: none;
  outline: none;
  font-family: inherit;
}

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

#search-form button {
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: #fff;
  background: var(--gradient-accent);
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: filter var(--transition-fast);
}

#search-form button:hover {
  filter: brightness(1.1);
}

#theme-toggle,
#mobile-menu-btn {
  padding: 8px 14px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  background: var(--bg-glass);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  font-family: inherit;
  white-space: nowrap;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
}

#theme-toggle:hover,
#mobile-menu-btn:hover {
  color: var(--text-primary);
  background: var(--accent-soft);
  border-color: var(--accent);
}

#mobile-menu-btn {
  display: none;
}

#hero {
  position: relative;
  max-width: 100%;
  padding: 64px 24px 56px;
  background: var(--gradient-hero);
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 15% 30%, rgba(233, 69, 96, 0.18), transparent 45%),
    radial-gradient(circle at 85% 70%, rgba(83, 52, 131, 0.22), transparent 45%);
  pointer-events: none;
}

#hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  pointer-events: none;
}

.hero-content,
.hero-banner {
  position: relative;
  z-index: 1;
  max-width: var(--content-max);
  margin: 0 auto;
}

#hero-title {
  margin-bottom: 20px;
  background: linear-gradient(135deg, #fff 0%, #ffd6e0 60%, #e94560 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 4px 30px rgba(233, 69, 96, 0.25);
}

body.light-mode #hero-title {
  background: linear-gradient(135deg, #1a1a2e 0%, #533483 60%, #e94560 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  max-width: 820px;
  font-size: clamp(0.95rem, 1.5vw, 1.08rem);
  color: var(--text-secondary);
  margin-bottom: 36px;
}

body.light-mode .hero-lead {
  color: var(--text-secondary);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 44px;
}

.stat-item {
  padding: 20px 16px;
  text-align: center;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.stat-item:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-glow), var(--shadow-md);
  border-color: var(--accent);
}

.stat-number {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.02em;
}

.stat-number::after {
  content: "+";
  font-size: 0.7em;
  margin-left: 2px;
}

.stat-item:last-child .stat-number::after {
  content: "";
}

.stat-label {
  display: block;
  margin-top: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.hero-banner {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--bg-glass-border);
  aspect-ratio: 600 / 200;
}

.banner-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.8s ease, transform 0.8s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

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

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

.breadcrumb {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 20px 24px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

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

.breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--text-muted);
  opacity: 0.6;
}

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

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

.breadcrumb li[aria-current="page"] {
  color: var(--accent);
}

#about,
#bagua,
#chigua,
#products,
#cases,
#news,
#articles,
#howto,
#faq,
#contact,
#sitemap,
#author-info,
#security {
  position: relative;
}

#about p,
#bagua p,
#chigua p,
#products p,
#cases p,
#news p,
#articles p,
#howto p,
#contact p,
#author-info p,
#security p {
  font-size: 0.96rem;
}

#news article,
#articles article {
  position: relative;
  margin-bottom: 20px;
  padding: 24px 26px;
  background: var(--bg-card);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

#news article::before,
#articles article::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 24px;
  width: 3px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-4px);
  background: var(--bg-card-hover);
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--accent-soft);
}

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

#news article h4,
#articles article h4 {
  margin-bottom: 8px;
  transition: color var(--transition-fast);
}

#news article:hover h4,
#articles article:hover h4 {
  color: var(--accent);
}

#news article p:first-of-type,
#articles article p:first-of-type {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

#news article a,
#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  transition: gap var(--transition-fast), color var(--transition-fast);
}

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

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

#cases blockquote {
  margin-bottom: 16px;
}

#faq details {
  margin-bottom: 12px;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), background var(--transition-base);
}

#faq details[open] {
  border-color: var(--accent);
  box-shadow: var(--shadow-md), 0 0 0 1px var(--accent-soft);
  background: var(--bg-card-hover);
}

#faq summary {
  position: relative;
  padding: 18px 52px 18px 22px;
  font-weight: 600;
  font-size: 0.98rem;
  color: var(--text-primary);
  cursor: pointer;
  list-style: none;
  user-select: none;
  transition: color var(--transition-fast);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.15rem;
  font-weight: 400;
  color: var(--accent);
  background: var(--accent-soft);
  border-radius: 50%;
  transition: transform var(--transition-base), background var(--transition-base);
}

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

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

#faq details p {
  padding: 0 22px 20px;
  font-size: 0.92rem;
  color: var(--text-secondary);
  animation: fadeSlideIn 0.35s ease both;
}

#contact p {
  margin-bottom: 8px;
  font-size: 0.94rem;
}

#contact h3 {
  margin-top: 28px;
}

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

#sitemap ul {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 12px;
}

#sitemap ul li {
  padding-left: 0;
  margin-bottom: 0;
}

#sitemap ul li::before {
  display: none;
}

#sitemap ul li a {
  display: block;
  padding: 14px 18px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  text-align: center;
  transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

#author-info p {
  font-size: 0.92rem;
}

#security {
  padding-bottom: 72px;
}

#site-footer {
  position: relative;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 56px 24px 0;
  margin-top: 24px;
}

#site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.footer-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  padding-bottom: 40px;
}

.footer-section h3 {
  position: relative;
  margin-bottom: 18px;
  padding-bottom: 12px;
  font-size: 1rem;
  color: var(--text-primary);
}

.footer-section h3::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 32px;
  height: 2px;
  border-radius: var(--radius-full);
  background: var(--gradient-accent);
}

.footer-section p,
.footer-section li {
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.7;
}

.footer-section ul li {
  padding-left: 0;
}

.footer-section ul li::before {
  display: none;
}

.footer-section ul a {
  color: var(--text-muted);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-section ul a:hover {
  color: var(--accent);
  padding-left: 4px;
}

#privacy,
#disclaimer,
#copyright {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 22px 24px;
  border-top: 1px solid var(--border-color);
}

#privacy h3,
#disclaimer h3,
#copyright h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

#privacy p,
#disclaimer p,
#copyright p {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

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

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

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

#back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 900;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  color: #fff;
  background: var(--gradient-accent);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  box-shadow: var(--shadow-md), 0 0 20px var(--accent-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base), filter var(--transition-fast);
  font-family: inherit;
}

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

#back-to-top:hover {
  filter: brightness(1.12);
  transform: translateY(-3px) scale(1.05);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  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.visible {
  opacity: 1;
  transform: translateY(0);
}

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

@keyframes pulseGlow {
  0%, 100% {
    box-shadow: 0 0 0 0 var(--accent-glow);
  }
  50% {
    box-shadow: 0 0 0 10px transparent;
  }
}

@keyframes floatY {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

@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 (max-width: 1100px) {
  #main-nav ul {
    gap: 2px;
  }
  #main-nav a {
    padding: 7px 9px;
    font-size: 0.84rem;
  }
  #search-form input[type="search"] {
    width: 120px;
  }
}

@media (max-width: 960px) {
  :root {
    --header-height: 64px;
  }

  .header-inner {
    padding: 0 16px;
    gap: 12px;
  }

  #main-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-height));
    overflow-y: auto;
    background: rgba(15, 15, 26, 0.96);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-lg);
    padding: 12px 16px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    transition: opacity var(--transition-base), visibility var(--transition-base), transform var(--transition-base);
  }

  body.light-mode #main-nav {
    background: rgba(255, 255, 255, 0.97);
  }

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

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

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

  #mobile-menu-btn {
    display: inline-block;
  }

  #search-form input[type="search"] {
    width: 110px;
  }

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

  .footer-inner {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 15px;
  }

  section {
    padding: 40px 16px;
  }

  #hero {
    padding: 44px 16px 40px;
  }

  .hero-stats {
    gap: 10px;
    margin-bottom: 32px;
  }

  .stat-item {
    padding: 16px 10px;
  }

  .stat-label {
    font-size: 0.74rem;
  }

  .breadcrumb {
    padding: 16px 16px 0;
    font-size: 0.78rem;
  }

  .header-actions {
    gap: 6px;
  }

  #search-form {
    display: none;
  }

  #theme-toggle,
  #mobile-menu-btn {
    padding: 7px 11px;
    font-size: 0.76rem;
  }

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

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

  #news article,
  #articles article {
    padding: 20px 18px;
  }

  #faq summary {
    padding: 16px 48px 16px 18px;
    font-size: 0.92rem;
  }

  #faq details p {
    padding: 0 18px 18px;
    font-size: 0.88rem;
  }

  blockquote {
    padding: 20px 18px 20px 46px;
  }

  #sitemap ul {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

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

  #back-to-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
    font-size: 0.66rem;
  }
}

@media (max-width: 400px) {
  .hero-stats {
    grid-template-columns: 1fr;
  }

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

@media print {
  #site-header,
  #back-to-top,
  #mobile-menu-btn,
  #theme-toggle,
  #search-form,
  .hero-banner {
    display: none !important;
  }
  body {
    background: #fff;
    color: #000;
  }
  section {
    padding: 16px 0;
  }
  a {
    color: #000;
    text-decoration: underline;
  }
}