:root {
  --primary: #1a1a2e;
  --primary-light: #16213e;
  --accent: #e94560;
  --accent-hover: #ff6b81;
  --accent-glow: rgba(233, 69, 96, 0.35);
  --bg: #f0f2f8;
  --bg-alt: #e8ebf4;
  --surface: #ffffff;
  --surface-glass: rgba(255, 255, 255, 0.72);
  --surface-glass-border: rgba(255, 255, 255, 0.5);
  --text: #2d2d44;
  --text-light: #6c6c80;
  --text-lighter: #9a9ab0;
  --border: #e4e6ec;
  --border-glass: rgba(255, 255, 255, 0.35);
  --shadow-sm: 0 2px 8px rgba(26, 26, 46, 0.06);
  --shadow: 0 8px 32px rgba(26, 26, 46, 0.1);
  --shadow-lg: 0 16px 48px rgba(26, 26, 46, 0.14);
  --shadow-accent: 0 8px 32px rgba(233, 69, 96, 0.25);
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --radius-full: 9999px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Roboto Mono", monospace;
  --gradient-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  --gradient-2: linear-gradient(135deg, #2d1b3d 0%, #4a1e5c 50%, #6b2d6b 100%);
  --gradient-3: linear-gradient(135deg, #1a2e1a 0%, #1e4a2e 50%, #2d6b3d 100%);
  --gradient-accent: linear-gradient(135deg, #e94560 0%, #ff6b81 100%);
  --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.6) 100%);
  --header-height: 68px;
}

[data-theme="dark"] {
  --primary: #e8e8f0;
  --primary-light: #d0d0e0;
  --accent: #ff6b81;
  --accent-hover: #ff8fa3;
  --accent-glow: rgba(255, 107, 129, 0.3);
  --bg: #0a0a14;
  --bg-alt: #0f0f1a;
  --surface: #1a1a2e;
  --surface-glass: rgba(26, 26, 46, 0.75);
  --surface-glass-border: rgba(255, 255, 255, 0.08);
  --text: #e0e0ec;
  --text-light: #a0a0b8;
  --text-lighter: #6c6c80;
  --border: #2d2d44;
  --border-glass: rgba(255, 255, 255, 0.06);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.45);
  --shadow-accent: 0 8px 32px rgba(255, 107, 129, 0.2);
  --gradient-glass: linear-gradient(135deg, rgba(26,26,46,0.9) 0%, rgba(26,26,46,0.6) 100%);
}

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

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

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
  font-size: 16px;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

button {
  font-family: var(--font);
  cursor: pointer;
}

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

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

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

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: var(--radius-full);
}

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

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

.site-header.scrolled {
  box-shadow: var(--shadow);
  background: var(--surface-glass);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 16px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--primary);
  letter-spacing: -0.02em;
  flex-shrink: 0;
  transition: transform var(--transition-fast);
}

.logo:hover {
  transform: scale(1.03);
}

.logo svg {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  box-shadow: 0 2px 8px rgba(233, 69, 96, 0.3);
}

.logo span em {
  font-style: normal;
  color: var(--accent);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2px;
}

.main-nav a {
  color: var(--text);
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
  white-space: nowrap;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%) scaleX(0);
  width: 20px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
  transition: transform var(--transition);
}

.main-nav a:hover {
  background: var(--bg);
  color: var(--accent);
  transform: translateY(-1px);
}

.main-nav a:hover::after {
  transform: translateX(-50%) scaleX(1);
}

.search-box {
  display: flex;
  align-items: center;
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-full);
  padding: 4px 6px 4px 16px;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.search-box:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: var(--surface);
}

.search-box input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 0.875rem;
  color: var(--text);
  width: 140px;
  font-family: var(--font);
}

.search-box input::placeholder {
  color: var(--text-lighter);
}

.search-box button {
  background: var(--gradient-accent);
  border: none;
  color: #fff;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition), transform var(--transition-fast), box-shadow var(--transition-fast);
  flex-shrink: 0;
}

.search-box button:hover {
  transform: scale(1.08);
  box-shadow: 0 4px 12px var(--accent-glow);
}

.search-box button:active {
  transform: scale(0.95);
}

.search-box button svg {
  width: 16px;
  height: 16px;
}

.theme-toggle {
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  transition: background var(--transition), border-color var(--transition), color var(--transition), transform var(--transition-fast);
  flex-shrink: 0;
}

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

.theme-toggle svg {
  width: 20px;
  height: 20px;
}

.mobile-menu-btn {
  display: none;
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  color: var(--text);
  flex-shrink: 0;
  transition: border-color var(--transition), color var(--transition);
}

.mobile-menu-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.mobile-menu-btn svg {
  width: 22px;
  height: 22px;
}

.banner {
  position: relative;
  overflow: hidden;
  background: var(--primary);
  color: #fff;
}

.banner-slides {
  display: flex;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.banner-slide {
  min-width: 100%;
  padding: 100px 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.banner-slide::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.06) 0%, transparent 60%);
  pointer-events: none;
}

.banner-slide:nth-child(1) {
  background: var(--gradient-1);
}

.banner-slide:nth-child(2) {
  background: var(--gradient-2);
}

.banner-slide:nth-child(3) {
  background: var(--gradient-3);
}

.banner-content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.banner-content h2 {
  font-size: clamp(1.6rem, 4vw, 2.8rem);
  font-weight: 800;
  margin-bottom: 18px;
  letter-spacing: -0.02em;
  line-height: 1.3;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.2);
}

.banner-content p {
  font-size: clamp(0.95rem, 2vw, 1.15rem);
  opacity: 0.88;
  margin-bottom: 32px;
  line-height: 1.8;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.banner-content .btn {
  display: inline-block;
  background: var(--gradient-accent);
  color: #fff;
  padding: 14px 36px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  transition: background var(--transition), transform var(--transition-bounce), box-shadow var(--transition);
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.4);
  position: relative;
  overflow: hidden;
}

.banner-content .btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition);
}

.banner-content .btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 32px rgba(233, 69, 96, 0.5);
  color: #fff;
}

.banner-content .btn:hover::before {
  opacity: 1;
}

.banner-content .btn:active {
  transform: translateY(-1px) scale(0.99);
}

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

.banner-dots button {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  border: 2px solid rgba(255, 255, 255, 0.5);
  background: transparent;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), transform var(--transition-bounce), width var(--transition);
  padding: 0;
}

.banner-dots button.active {
  background: #fff;
  border-color: #fff;
  transform: scale(1.2);
  width: 28px;
}

.banner-dots button:hover {
  border-color: rgba(255, 255, 255, 0.9);
}

.stats-section {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 56px 0;
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  opacity: 0.15;
  pointer-events: none;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.stat-item {
  padding: 16px;
  border-radius: var(--radius);
  transition: transform var(--transition), background var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  background: var(--bg);
}

.stat-item .stat-number {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 800;
  color: var(--accent);
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-top: 6px;
  font-weight: 500;
}

.section {
  padding: 80px 0;
  position: relative;
}

.section-alt {
  background: var(--surface);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 56px;
  height: 4px;
  background: var(--gradient-accent);
  border-radius: var(--radius-full);
  margin: 14px auto 0;
}

.section-header p {
  color: var(--text-light);
  font-size: 1rem;
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.8;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.card {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 32px 26px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  position: relative;
  overflow: hidden;
}

.card::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);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
  background: var(--surface);
}

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

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 6px 20px var(--accent-glow);
  transition: transform var(--transition-bounce);
}

.card:hover .card-icon {
  transform: scale(1.08) rotate(-4deg);
}

.card-icon svg {
  width: 26px;
  height: 26px;
}

.card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
}

.card p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.8;
}

.article-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.article-card {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.article-thumb {
  height: 170px;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.article-thumb::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 50%, rgba(0,0,0,0.3) 100%);
  pointer-events: none;
}

.article-thumb svg {
  width: 64px;
  height: 64px;
  opacity: 0.4;
  color: #fff;
  transition: transform var(--transition), opacity var(--transition);
}

.article-card:hover .article-thumb svg {
  transform: scale(1.15);
  opacity: 0.6;
}

.article-body {
  padding: 22px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.article-meta {
  display: flex;
  gap: 12px;
  font-size: 0.78rem;
  color: var(--text-lighter);
  margin-bottom: 10px;
  font-weight: 500;
}

.article-meta span {
  padding: 2px 10px;
  background: var(--bg);
  border-radius: var(--radius-full);
  transition: background var(--transition), color var(--transition);
}

.article-card:hover .article-meta span {
  background: var(--accent);
  color: #fff;
}

.article-body h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
  line-height: 1.5;
  transition: color var(--transition-fast);
}

.article-card:hover .article-body h3 {
  color: var(--accent);
}

.article-body p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
  flex: 1;
}

.article-body .read-more {
  margin-top: 16px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap var(--transition-fast), color var(--transition-fast);
}

.article-body .read-more:hover {
  gap: 8px;
  color: var(--accent-hover);
}

.faq-list {
  max-width: 860px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
  overflow: hidden;
  background: var(--surface-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.faq-item.active {
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--accent-glow);
  background: var(--surface);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  text-align: left;
  font-family: var(--font);
  transition: background var(--transition), color var(--transition);
}

.faq-question:hover {
  background: var(--bg);
}

.faq-item.active .faq-question {
  color: var(--accent);
}

.faq-question .faq-arrow {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  transition: transform var(--transition);
  color: var(--accent);
}

.faq-item.active .faq-question .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.45s cubic-bezier(0.4, 0, 0.2, 1), padding 0.45s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 0 24px;
}

.faq-item.active .faq-answer {
  max-height: 800px;
  padding: 0 24px 24px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.85;
}

.howto-steps {
  max-width: 860px;
  margin: 0 auto;
  counter-reset: step;
}

.howto-step {
  display: flex;
  gap: 22px;
  margin-bottom: 32px;
  position: relative;
}

.howto-step::before {
  counter-increment: step;
  content: counter(step);
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1.1rem;
  z-index: 1;
  box-shadow: 0 4px 16px var(--accent-glow);
  transition: transform var(--transition-bounce);
}

.howto-step:hover::before {
  transform: scale(1.1);
}

.howto-step:not(:last-child)::after {
  content: '';
  position: absolute;
  left: 23px;
  top: 48px;
  bottom: -32px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent) 0%, var(--border) 100%);
  opacity: 0.4;
}

.howto-step-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.howto-step-content p {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.85;
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.team-card {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 32px 22px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.team-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  margin: 0 auto 18px;
  background: var(--gradient-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.6rem;
  font-weight: 800;
  box-shadow: 0 6px 24px var(--accent-glow);
  transition: transform var(--transition-bounce);
}

.team-card:hover .team-avatar {
  transform: scale(1.08) rotate(4deg);
}

.team-card h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.team-card .role {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}

.team-card p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.7;
}

.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 32px 26px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.testimonial-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 12px;
  right: 24px;
  font-size: 5rem;
  color: var(--accent);
  opacity: 0.1;
  font-family: Georgia, serif;
  line-height: 1;
  pointer-events: none;
}

.testimonial-card .quote {
  font-size: 0.9rem;
  color: var(--text-light);
  line-height: 1.85;
  margin-bottom: 20px;
  font-style: italic;
  position: relative;
  z-index: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial-author .avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
  box-shadow: 0 3px 12px rgba(26, 26, 46, 0.2);
}

.testimonial-author .info strong {
  display: block;
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 700;
}

.testimonial-author .info span {
  font-size: 0.78rem;
  color: var(--text-lighter);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 24px;
}

.contact-item {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius);
  padding: 26px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.contact-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: transparent;
}

.contact-item .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
  transition: background var(--transition), color var(--transition), transform var(--transition-bounce);
}

.contact-item:hover .icon {
  background: var(--gradient-accent);
  color: #fff;
  transform: scale(1.06);
}

.contact-item .icon svg {
  width: 22px;
  height: 22px;
}

.contact-item h3 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 0.85rem;
  color: var(--text-light);
  line-height: 1.6;
  word-break: break-all;
}

.site-footer {
  background: var(--primary);
  color: #fff;
  padding: 64px 0 0;
  position: relative;
  overflow: hidden;
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

[data-theme="dark"] .site-footer {
  background: #0a0a14;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 44px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand .logo {
  color: #fff;
  margin-bottom: 16px;
}

.footer-brand .logo:hover {
  transform: none;
}

.footer-brand p {
  font-size: 0.85rem;
  opacity: 0.65;
  line-height: 1.85;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 18px;
  opacity: 0.95;
  position: relative;
  padding-bottom: 10px;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 24px;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.footer-col ul {
  list-style: none;
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col ul li a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.85rem;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
  display: inline-block;
}

.footer-col ul li a:hover {
  color: #fff;
  padding-left: 4px;
}

.footer-bottom {
  padding: 24px 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 0.8rem;
  opacity: 0.55;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.7);
  transition: color var(--transition-fast);
}

.footer-bottom a:hover {
  color: #fff;
  opacity: 1;
}

.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 24px var(--accent-glow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px) scale(0.9);
  transition: opacity var(--transition), visibility var(--transition), transform var(--transition-bounce), box-shadow var(--transition);
  z-index: 999;
}

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

.back-to-top:hover {
  transform: translateY(-4px) scale(1.08);
  box-shadow: 0 10px 32px var(--accent-glow);
}

.back-to-top:active {
  transform: translateY(-2px) scale(0.98);
}

.back-to-top svg {
  width: 20px;
  height: 20px;
}

.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);
}

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

.reveal:nth-child(2) { transition-delay: 0.08s; }
.reveal:nth-child(3) { transition-delay: 0.16s; }
.reveal:nth-child(4) { transition-delay: 0.24s; }
.reveal:nth-child(5) { transition-delay: 0.32s; }
.reveal:nth-child(6) { transition-delay: 0.4s; }

.breadcrumb {
  padding: 16px 0;
  font-size: 0.82rem;
  color: var(--text-lighter);
}

.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.breadcrumb li + li::before {
  content: '/';
  margin-right: 8px;
  color: var(--border);
}

.breadcrumb a {
  color: var(--text-lighter);
  transition: color var(--transition-fast);
}

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

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

@media (max-width: 1024px) {
  .header-inner {
    gap: 10px;
  }

  .main-nav a {
    padding: 8px 10px;
    font-size: 0.82rem;
  }

  .search-box input {
    width: 110px;
  }
}

@media (max-width: 900px) {
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--surface);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 12px 20px 20px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

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

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
  }

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

  .mobile-menu-btn {
    display: flex;
  }

  .search-box input {
    width: 100px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .banner-slide {
    padding: 80px 20px;
  }
}

@media (max-width: 600px) {
  :root {
    --header-height: 60px;
  }

  .header-inner {
    height: var(--header-height);
    gap: 8px;
  }

  .logo {
    font-size: 1.1rem;
  }

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

  .search-box {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

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

  .stat-item .stat-number {
    font-size: 1.6rem;
  }

  .stat-item .stat-label {
    font-size: 0.8rem;
  }

  .section {
    padding: 56px 0;
  }

  .section-header {
    margin-bottom: 40px;
  }

  .banner-slide {
    padding: 60px 20px;
  }

  .banner-content h2 {
    font-size: 1.5rem;
  }

  .banner-content p {
    font-size: 0.9rem;
    margin-bottom: 24px;
  }

  .banner-content .btn {
    padding: 12px 28px;
    font-size: 0.9rem;
  }

  .banner-dots {
    bottom: 16px;
  }

  .article-list {
    grid-template-columns: 1fr;
  }

  .testimonial-grid {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .team-grid {
    grid-template-columns: 1fr 1fr;
    gap: 16px;
  }

  .team-card {
    padding: 24px 16px;
  }

  .team-avatar {
    width: 64px;
    height: 64px;
    font-size: 1.3rem;
  }

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

  .howto-step {
    gap: 16px;
  }

  .howto-step::before {
    width: 40px;
    height: 40px;
    font-size: 1rem;
  }

  .howto-step:not(:last-child)::after {
    left: 19px;
    top: 40px;
  }

  .faq-question {
    padding: 16px 18px;
    font-size: 0.9rem;
  }

  .faq-answer {
    padding: 0 18px;
  }

  .faq-item.active .faq-answer {
    padding: 0 18px 18px;
  }

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

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 8px;
  }
}

@media (max-width: 380px) {
  .team-grid {
    grid-template-columns: 1fr;
  }

  .banner-content h2 {
    font-size: 1.3rem;
  }
}

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

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

@media print {
  .site-header,
  .back-to-top,
  .banner,
  .theme-toggle,
  .mobile-menu-btn,
  .search-box {
    display: none !important;
  }

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

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