```css
/* ===== CSS Reset & Base ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background-color: var(--bg-light);
  color: var(--text-primary-light);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

a {
  color: var(--link-light);
  text-decoration: none;
  transition: color 0.2s ease, opacity 0.2s ease;
}

a:hover {
  opacity: 0.85;
}

button {
  cursor: pointer;
  font-family: inherit;
}

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

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-heading-light);
  margin-bottom: 0.5em;
}

p {
  margin-bottom: 1rem;
}

/* ===== Design Tokens ===== */
:root {
  /* 色彩系统 */
  --primary: #1d4ed8;
  --primary-hover: #1e40af;
  --primary-light: #3b82f6;
  --primary-dark: #1e3a8a;
  --accent: #7c3aed;
  --accent-light: #a78bfa;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;

  /* 浅色模式 */
  --bg-light: #f7f9fc;
  --bg-gradient-light: linear-gradient(135deg, #f0f4ff 0%, #f7f9fc 50%, #eef2ff 100%);
  --card-bg-light: #ffffff;
  --card-bg-light-hover: #fafbff;
  --text-primary-light: #1F2937;
  --text-secondary-light: #3b4a5a;
  --text-muted-light: #64748b;
  --text-heading-light: #0f172a;
  --border-light: #e2e8f0;
  --link-light: #1d4ed8;
  --bg-footer-light: #1F2937;
  --text-footer-light: #E2E8F0;
  --text-footer-muted: #94a3b8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 30px rgba(0,0,0,0.08);
  --shadow-primary: 0 4px 20px rgba(29, 78, 216, 0.2);
  --glass-bg: rgba(255, 255, 255, 0.75);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
  --backdrop-blur: blur(16px) saturate(180%);
  --nav-bg: rgba(255, 255, 255, 0.8);

  /* 暗色模式 */
  --bg-dark: #0f172a;
  --bg-gradient-dark: linear-gradient(135deg, #0f172a 0%, #1e1b4b 50%, #0f172a 100%);
  --card-bg-dark: #1e293b;
  --card-bg-dark-hover: #273449;
  --text-primary-dark: #E2E8F0;
  --text-secondary-dark: #cbd5e1;
  --text-muted-dark: #94a3b8;
  --text-heading-dark: #ffffff;
  --border-dark: #334155;
  --link-dark: #93c5fd;
  --bg-footer-dark: #0b1120;
  --text-footer-dark: #E2E8F0;
  --shadow-dark-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-dark-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-dark-lg: 0 10px 30px rgba(0,0,0,0.5);
  --glass-dark-bg: rgba(30, 41, 59, 0.7);
  --glass-dark-border: rgba(148, 163, 184, 0.2);
  --nav-dark-bg: rgba(15, 23, 42, 0.8);

  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-8: 3rem;
  --space-10: 5rem;

  --container-max: 1400px;
  --header-height: 72px;
}

/* ===== Dark Mode Overrides ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-light: var(--bg-dark);
    --bg-gradient-light: var(--bg-gradient-dark);
    --card-bg-light: var(--card-bg-dark);
    --card-bg-light-hover: var(--card-bg-dark-hover);
    --text-primary-light: var(--text-primary-dark);
    --text-secondary-light: var(--text-secondary-dark);
    --text-muted-light: var(--text-muted-dark);
    --text-heading-light: var(--text-heading-dark);
    --border-light: var(--border-dark);
    --link-light: var(--link-dark);
    --bg-footer-light: var(--bg-footer-dark);
    --text-footer-light: var(--text-footer-dark);
    --text-footer-muted: var(--text-muted-dark);
    --shadow-sm: var(--shadow-dark-sm);
    --shadow-md: var(--shadow-dark-md);
    --shadow-lg: var(--shadow-dark-lg);
    --glass-bg: var(--glass-dark-bg);
    --glass-border: var(--glass-dark-border);
    --nav-bg: var(--nav-dark-bg);
  }
}

/* ===== Utility Classes ===== */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--space-5);
  padding-right: var(--space-5);
}

.text-muted {
  color: var(--text-muted-light) !important;
}

.text-secondary {
  color: var(--text-secondary-light) !important;
}

.text-center {
  text-align: center;
}

.card {
  background-color: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease, border-color 0.3s ease;
  will-change: transform;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  background-color: var(--card-bg-light-hover);
  border-color: var(--primary-light);
}

/* ===== Glassmorphism ===== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--backdrop-blur);
  -webkit-backdrop-filter: var(--backdrop-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
}

/* ===== Header & Navigation ===== */
.nav-container {
  background: var(--nav-bg);
  backdrop-filter: blur(12px) saturate(180%);
  -webkit-backdrop-filter: blur(12px) saturate(180%);
  border-bottom: 1px solid var(--border-light);
  position: sticky;
  top: 0;
  z-index: 1000;
  transition: box-shadow 0.3s ease;
}

.nav-container.scrolled {
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.8rem var(--space-5);
  max-width: var(--container-max);
  margin: 0 auto;
  min-height: var(--header-height);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.brand-link {
  font-size: 1.6rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: -0.5px;
  transition: transform 0.3s ease;
}

.brand-link:hover {
  transform: scale(1.02);
}

.nav-links {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.nav-links a {
  color: var(--text-primary-light);
  font-weight: 500;
  padding: 0.5rem 0.9rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  position: relative;
  transition: color 0.3s ease, background-color 0.3s ease;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0.2rem;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s ease;
}

.nav-links a:hover {
  color: var(--primary);
  background-color: rgba(29, 78, 216, 0.08);
}

.nav-links a:hover::after {
  width: 60%;
}

.search-box {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-full);
  padding: 0.3rem 0.3rem 0.3rem 1rem;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-box:focus-within {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.1);
}

.search-input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary-light);
  font-size: 0.9rem;
  width: 150px;
  padding: 0.25rem 0;
}

.search-input::placeholder {
  color: var(--text-muted-light);
  opacity: 0.7;
}

.search-btn {
  background: var(--primary);
  border: none;
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.3s ease, transform 0.2s ease;
}

.search-btn:hover {
  background-color: var(--primary-hover);
  transform: scale(1.05);
}

/* ===== Mobile Menu ===== */
.mobile-nav {
  display: none;
  background-color: var(--card-bg-light);
  border-bottom: 1px solid var(--border-light);
  padding: 0.5rem var(--space-4);
  gap: 0.25rem;
  justify-content: space-around;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.mobile-nav a {
  color: var(--text-primary-light);
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 0.3s ease;
}

.mobile-nav a:hover {
  background-color: rgba(29, 78, 216, 0.1);
  color: var(--primary);
}

/* ===== Hero Banner Section ===== */
.hero-banner {
  position: relative;
  padding: 4rem 2rem;
  text-align: center;
  background: linear-gradient(145deg, #0f172a 0%, #1e3a8a 50%, #312e81 100%);
  color: white;
  overflow: hidden;
  isolation: isolate;
}

.hero-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(circle at 20% 30%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(29, 78, 216, 0.3) 0%, transparent 40%);
  z-index: -1;
}

.hero-banner::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
  top: -100px;
  right: -100px;
  animation: float 8s ease-in-out infinite;
  z-index: -1;
}

.hero-banner h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  color: #ffffff;
  text-shadow: 0 4px 20px rgba(0,0,0,0.4);
  margin-bottom: 0.8rem;
  animation: fadeSlideIn 0.8s ease-out;
}

.hero-banner p {
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: #dbeafe;
  max-width: 700px;
  margin: 0 auto 1.5rem;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
  animation: fadeSlideIn 0.8s ease-out 0.1s backwards;
}

.hero-banner .btn-primary {
  animation: fadeSlideIn 0.8s ease-out 0.2s backwards;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 2.5rem;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
  padding: 0.5rem 1.5rem;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
  animation: fadeSlideIn 0.8s ease-out 0.3s backwards;
}

.hero-stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: white;
  display: block;
}

.hero-stat-label {
  font-size: 0.85rem;
  color: #dbeafe;
  opacity: 0.9;
}

/* ===== Section Styles ===== */
.section {
  padding: 3rem 1rem;
}

.section-title {
  font-size: 2rem;
  border-left: 6px solid var(--primary);
  padding-left: 1.2rem;
  margin-bottom: 2rem;
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.5rem;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  border-radius: 3px;
}

/* ===== Grid Layouts ===== */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* ===== Cards ===== */
.card-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  display: inline-block;
}

.card h2, .card h3, .card h4 {
  margin-bottom: 0.75rem;
}

/* ===== Feature Cards ===== */
.feature-card {
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

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

/* ===== Article Cards ===== */
.article-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.article-card h4 {
  font-size: 1.15rem;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.article-card .article-meta {
  font-size: 0.85rem;
  color: var(--text-muted-light);
  margin-bottom: 0.75rem;
}

.article-card p {
  flex-grow: 1;
  font-size: 0.95rem;
}

.article-card .read-more {
  margin-top: 1rem;
  font-weight: 600;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: gap 0.3s ease;
}

.article-card .read-more:hover {
  gap: 0.6rem;
}

/* ===== FAQ Styles ===== */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background-color: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

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

.faq-item[open] {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.08);
}

.faq-question {
  font-weight: 600;
  color: var(--text-heading-light);
  padding: 1.2rem 1.5rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background-color 0.3s ease;
}

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

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary);
  transition: transform 0.3s ease;
  margin-left: 1rem;
}

.faq-item[open] .faq-question::after {
  transform: rotate(45deg);
}

.faq-question:hover {
  background-color: rgba(29, 78, 216, 0.05);
}

.faq-answer {
  padding: 0 1.5rem 1.2rem;
  color: var(--text-primary-light);
  border-top: 1px solid var(--border-light);
  padding-top: 0.75rem;
  margin-top: 0;
  animation: fadeIn 0.3s ease;
}

/* ===== Buttons ===== */
.btn-primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  font-weight: 600;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  display: inline-block;
  box-shadow: var(--shadow-primary);
  transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(29, 78, 216, 0.35);
  background: linear-gradient(135deg, var(--primary-hover), var(--primary-dark));
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-outline {
  border: 1px solid var(--border-light);
  color: var(--text-primary-light);
  background: transparent;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  text-decoration: none;
  display: inline-block;
  font-weight: 500;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  border-color: var(--primary);
  background-color: rgba(29, 78, 216, 0.05);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ===== Tag ===== */
.tag {
  display: inline-block;
  background: linear-gradient(135deg, #e0e7ff, #dbeafe);
  color: var(--primary-dark);
  padding: 0.25rem 0.9rem;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 0.85rem;
  transition: transform 0.2s ease;
}

.tag:hover {
  transform: scale(1.05);
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  padding: 1rem 2rem;
  font-size: 0.9rem;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border-light);
}

.breadcrumb a {
  color: var(--link-light);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.breadcrumb .separator {
  margin: 0 0.5rem;
  color: var(--text-muted-light);
}

/* ===== Footer ===== */
.footer {
  background-color: var(--bg-footer-light);
  color: var(--text-footer-light);
  padding: 3rem 2rem 1.5rem;
  position: relative;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent), var(--primary));
  background-size: 200% 100%;
  animation: gradientShift 3s ease infinite;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}

.footer h4 {
  color: #ffffff;
  margin-bottom: 1rem;
  font-size: 1.1rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background: var(--primary-light);
  border-radius: 2px;
}

.footer a {
  color: #93c5fd;
  text-decoration: none;
  transition: color 0.2s ease, padding-left 0.2s ease;
  display: inline-block;
}

.footer a:hover {
  color: #ffffff;
  padding-left: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  text-align: center;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
}

.footer-bottom p {
  color: var(--text-footer-muted);
  font-size: 0.85rem;
  margin-bottom: 0.5rem;
}

/* ===== Scroll Animations ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeSlideIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-10px) scale(1.05);
  }
}

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

/* Scroll reveal animation */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ===== Back to Top Button ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 45px;
  height: 45px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
}

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

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(29, 78, 216, 0.4);
}

/* ===== Info Boxes ===== */
.info-box {
  background-color: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.info-box:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ===== Testimonial Cards ===== */
.testimonial-card {
  background-color: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  position: relative;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 4rem;
  color: var(--primary-light);
  opacity: 0.3;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 700;
}

/* ===== Team Section ===== */
.team-card {
  text-align: center;
  padding: 1.5rem;
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 1rem;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: white;
  transition: transform 0.3s ease;
}

.team-card:hover .team-avatar {
  transform: scale(1.1) rotate(5deg);
}

/* ===== Stat Box ===== */
.stat-box {
  text-align: center;
  padding: 2rem 1rem;
  background: linear-gradient(135deg, var(--card-bg-light), var(--card-bg-light-hover));
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-box:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  color: var(--text-muted-light);
  margin-top: 0.5rem;
  font-size: 0.95rem;
}

/* ===== HowTo Section ===== */
.howto-card {
  background-color: var(--card-bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.howto-card h3 {
  color: var(--primary);
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.howto-card h3:first-of-type {
  margin-top: 0;
}

.howto-card ol, .howto-card ul {
  padding-left: 1.5rem;
  margin-bottom: 1rem;
}

.howto-card li {
  margin-bottom: 0.5rem;
}

.howto-step {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 1rem;
}

.step-number {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: white;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .nav-links {
    display: none;
  }

  .mobile-nav {
    display: flex;
  }

  .search-box {
    display: none;
  }

  .hero-banner {
    padding: 3rem 1.5rem;
  }

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

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .hero-banner h1 {
    font-size: 1.8rem;
  }

  .hero-banner p {
    font-size: 1.1rem;
  }

  .hero-stats {
    gap: 1rem;
  }

  .hero-stat {
    padding: 0.5rem 1rem;
  }

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

  .section {
    padding: 2rem 1rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .footer-bottom {
    text-align: left;
    padding: 1.5rem 1rem;
  }

  .back-to-top {
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
  }

  .brand-link {
    font-size: 1.4rem;
  }

  .faq-question {
    font-size: 0.95rem;
    padding: 1rem;
  }

  .faq-answer {
    padding: 0 1rem 1rem;
  }

  .card {
    padding: 1.25rem;
  }

  .mobile-nav a {
    font-size: 0.9rem;
    padding: 0.3rem 0.6rem;
  }
}

@media (max-width: 480px) {
  .hero-banner {
    padding: 2rem 1rem;
  }

  .hero-banner h1 {
    font-size: 1.5rem;
  }

  .hero-banner p {
    font-size: 1rem;
  }

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

  .hero-stat-label {
    font-size: 0.75rem;
  }

  .btn-primary {
    padding: 0.7rem 1.5rem;
    font-size: 0.95rem;
  }

  .section-title {
    font-size: 1.3rem;
  }

  .brand-link {
    font-size: 1.2rem;
  }

  .tag {
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
  }
}

/* ===== Print Styles ===== */
@media print {
  .nav-container, .mobile-nav, .back-to-top, .footer, .search-box {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card, .faq-item {
    break-inside: avoid;
    border: 1px solid #ccc;
  }
}

/* ===== 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;
  }
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--primary);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0 0 8px 0;
  text-decoration: none;
  z-index: 9999;
}

.skip-link:focus {
  left: 0;
}

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

/* ===== Selection Color ===== */
::selection {
  background: var(--primary);
  color: white;
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--primary-light), var(--primary));
  border-radius: 5px;
}

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