/* ========================================
   U校官网 - 主样式表
   风格：极简高端 (Minimalist High-End)
   ======================================== */

/* ---------- CSS 变量定义 ---------- */
:root {
  /* 主色调 - 指定蓝 */
  --color-primary: #646CF1;
  --color-primary-light: #818CF8;
  --color-primary-dark: #4F46E5;

  /* 中性色 - 柔和灰度 */
  --color-slate-50: #fafafa;
  --color-slate-100: #f4f4f5;
  --color-slate-200: #e4e4e7;
  --color-slate-300: #d4d4d8;
  --color-slate-400: #a1a1aa;
  --color-slate-500: #71717a;
  --color-slate-600: #52525b;
  --color-slate-700: #3f3f46;
  --color-slate-800: #27272a;
  --color-slate-900: #18181b;

  /* 强调色 */
  --color-accent: #f59e0b;
  --color-accent-light: #fbbf24;

  /* 功能色 */
  --color-blue: #3b82f6;
  --color-green: #22c55e;
  --color-pink: #ec4899;
  --color-orange: #f97316;
  --color-cyan: #06b6d4;
  --color-yellow: #eab308;
  --color-purple: #a855f7;
  --color-red: #ef4444;

  /* 间距系统 */
  --space-xs: 6px;
  --space-sm: 12px;
  --space-md: 20px;
  --space-lg: 32px;
  --space-xl: 56px;
  --space-2xl: 80px;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-2xl: 32px;
  --radius-3xl: 48px;

  /* 阴影 */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
  --shadow-primary: 0 4px 14px -3px rgba(100, 108, 241, 0.3);

  /* 过渡 */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);

  /* 字体 */
  --font-sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

/* ---------- 全局重置 ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-slate-50);
  color: var(--color-slate-900);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ---------- 排版层次 ---------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 800;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
  font-size: 1.25rem;
}

p {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-slate-600);
}

a {
  color: inherit;
  text-decoration: none;
}

/* ---------- 工具类 ---------- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--space-lg);
  }
}

/* 渐变文字 */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 玻璃态卡片 */
.glass-card {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.5);
}

/* ---------- 按钮样式 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #75B4FA 0%, #4A90D9 100%);
  color: white;
  box-shadow: 0 4px 14px -3px rgba(117, 180, 250, 0.3);
}

.btn-primary::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px -4px rgba(117, 180, 250, 0.5);
}

.btn-primary:hover::before {
  transform: translateX(100%);
}

.btn-secondary {
  background: white;
  color: var(--color-slate-700);
  border: 1px solid var(--color-slate-200);
}

.btn-secondary:hover {
  background: var(--color-slate-50);
  border-color: var(--color-slate-300);
}

/* ---------- 导航栏 ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: all var(--transition-smooth);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) 0;
}

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

.navbar-brand img {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
}

.navbar-brand .logo-text {
  font-size: 1.5rem;
  font-weight: 700;
}

.navbar-nav {
  display: none;
  align-items: center;
  gap: var(--space-lg);
}

@media (min-width: 768px) {
  .navbar-nav {
    display: flex;
  }
}

.navbar-nav a {
  font-weight: 500;
  color: var(--color-slate-600);
  transition: color var(--transition-fast);
}

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

/* 移动端菜单按钮 */
.navbar-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  background: none;
  border: none;
  cursor: pointer;
  gap: 5px;
  padding: 10px;
}

@media (min-width: 768px) {
  .navbar-toggle {
    display: none;
  }
}

.navbar-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-slate-700);
  transition: all var(--transition-smooth);
}

.navbar-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Hero 区域 ---------- */
.hero {
	position: relative;
	min-height: auto;
	padding-top: 90px;
	padding-bottom: 40px;
	overflow: hidden;
}

@media (min-width: 768px) {
	.hero {
		padding-top: 100px;
		padding-bottom: 48px;
		min-height: auto;
	}
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 20% -20%, rgba(99, 102, 241, 0.15), transparent),
    radial-gradient(ellipse 60% 40% at 80% 120%, rgba(167, 139, 250, 0.1), transparent),
    var(--color-slate-50);
  z-index: -1;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

@media (min-width: 1024px) {
  .hero-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.hero-text {
  flex: 1;
  text-align: center;
  max-width: 640px;
}

@media (min-width: 1024px) {
  .hero-text {
    text-align: left;
  }
}

.hero-title {
  margin-bottom: var(--space-sm);
}

.hero-title .line {
  display: block;
  opacity: 0;
  transform: translateY(20px);
  animation: fadeUp 0.6s ease forwards;
}

.hero-title .line:nth-child(2) {
  animation-delay: 0.15s;
}

.hero-description {
  margin-bottom: var(--space-md);
  opacity: 0;
  animation: fadeUp 0.6s ease 0.3s forwards;
}

.hero-cta {
  opacity: 0;
  animation: fadeUp 0.6s ease 0.45s forwards;
}

.hero-qr {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: white;
  padding: var(--space-sm);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

.hero-qr-code {
  width: 80px;
  height: 80px;
  background: var(--color-slate-100);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px dashed var(--color-slate-300);
}

.hero-qr-code img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.hero-qr-text p:first-child {
  font-weight: 700;
  color: var(--color-slate-900);
  font-size: 1rem;
  margin-bottom: 2px;
}

.hero-qr-text p:last-child {
  font-size: 0.875rem;
  color: var(--color-slate-500);
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--space-md);
  position: relative;
}

@media (min-width: 1024px) {
  .hero-visual {
    margin-top: 0;
  }
}

.hero-visual .glow {
  position: absolute;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
  border-radius: 50%;
  filter: blur(40px);
  animation: pulse 4s ease-in-out infinite;
}

.hero-visual img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  border: 4px solid white;
  transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
  transition: transform var(--transition-smooth);
  position: relative;
  z-index: 1;
}

@media (min-width: 768px) {
  .hero-visual img {
    width: 200px;
    height: 200px;
  }
}

.hero-visual img:hover {
  transform: perspective(1000px) rotateY(0) rotateX(0);
}

/* ---------- 功能卡片区域 ---------- */
.features {
	padding: 48px 0;
}

.features-header {
	text-align: center;
	margin-bottom: 32px;
}

.features-header h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.features-header p {
  color: var(--color-slate-500);
  font-size: 1rem;
}

/* ---------- 混合布局功能区 ---------- */
.features-mixed {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

@media (min-width: 768px) {
  .features-mixed {
    flex-direction: row;
    gap: 20px;
  }
}

/* 左侧小卡片区域 */
.features-left {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  flex: 1;
}

@media (min-width: 640px) {
  .features-left {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 768px) {
  .features-left {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .features-left {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* 右侧大卡片区域 */
.features-right {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

@media (min-width: 768px) {
  .features-right {
    flex: 0 0 45%;
  }
}

/* 小卡片样式 */
.feature-card-sm {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  background: white;
  border-radius: var(--radius-lg);
  padding: 14px;
  border: 1px solid var(--color-slate-100);
  transition: all var(--transition-smooth);
}

.feature-card-sm:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px -4px rgba(99, 102, 241, 0.1);
  border-color: rgba(99, 102, 241, 0.2);
}

.feature-icon-sm {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-info h3 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-slate-800);
  margin-bottom: 2px;
}

.feature-info p {
  font-size: 0.8125rem;
  color: var(--color-slate-500);
  line-height: 1.4;
}

/* 大卡片样式 */
.feature-card-lg {
  flex: 1;
  background: white;
  border-radius: var(--radius-xl);
  padding: 20px;
  border: 1px solid var(--color-slate-100);
  transition: all var(--transition-smooth);
}

.feature-card-lg:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px -4px rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.2);
}

.feature-lg-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
}

.feature-card-lg h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-slate-800);
  margin-bottom: 8px;
}

.feature-card-lg p {
  font-size: 0.875rem;
  color: var(--color-slate-500);
  line-height: 1.6;
  margin-bottom: 12px;
}

.feature-lg-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  display: inline-block;
  padding: 4px 10px;
  background: var(--color-slate-100);
  color: var(--color-slate-600);
  font-size: 0.75rem;
  border-radius: 9999px;
  transition: all 0.2s ease;
}

.feature-card-lg:hover .tag {
  background: var(--color-primary);
  color: white;
}

/* 图标颜色变体 */
.feature-icon-sm.icon-blue { background: rgba(59, 130, 246, 0.1); color: var(--color-blue); }
.feature-icon-sm.icon-green { background: rgba(34, 197, 94, 0.1); color: var(--color-green); }
.feature-icon-sm.icon-pink { background: rgba(236, 72, 153, 0.1); color: var(--color-pink); }
.feature-icon-sm.icon-orange { background: rgba(249, 115, 22, 0.1); color: var(--color-orange); }
.feature-icon-sm.icon-cyan { background: rgba(6, 182, 212, 0.1); color: var(--color-cyan); }
.feature-icon-sm.icon-yellow { background: rgba(234, 179, 8, 0.1); color: var(--color-yellow); }

.feature-lg-icon.icon-purple { background: rgba(168, 85, 247, 0.1); color: var(--color-purple); }
.feature-lg-icon.icon-red { background: rgba(239, 68, 68, 0.1); color: var(--color-red); }

/* ---------- 统计数据条 ---------- */
.stats-bar {
  background: linear-gradient(135deg, var(--color-primary) 0%, #87CEFA 100%);
  padding: 24px 0;
}

.stats-bar .stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stats-bar .stat-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: white;
}

@media (min-width: 768px) {
  .stats-bar .stat-num {
    font-size: 1.875rem;
  }
}

.stats-bar .stat-label {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.8);
}

.stats-bar .stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 640px) {
  .stats-bar .stat-divider {
    display: none;
  }
  .stats-bar .flex {
    flex-wrap: wrap;
  }
  .stats-bar .stat-item {
    flex: 1 1 40%;
    padding: 12px;
  }
}

/* ---------- 用户评价卡片 ---------- */
.testimonial-card {
  background: var(--color-slate-50);
  border: 1px solid var(--color-slate-100);
  border-radius: var(--radius-xl);
  padding: 20px;
  transition: all var(--transition-smooth);
}

.testimonial-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: 0 8px 24px -8px rgba(99, 102, 241, 0.1);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.testimonial-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.875rem;
}

.testimonial-meta {
  display: flex;
  flex-direction: column;
}

.testimonial-name {
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--color-slate-800);
}

.testimonial-school {
  font-size: 0.75rem;
  color: var(--color-slate-400);
}

.testimonial-text {
  font-size: 0.875rem;
  color: var(--color-slate-600);
  line-height: 1.6;
}

/* ---------- CTA 区域新样式 ---------- */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, #87CEFA 100%);
  padding: 48px 0;
}

.cta-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
}

@media (min-width: 768px) {
  .cta-layout {
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 48px;
  }
}

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

@media (min-width: 768px) {
  .cta-text {
    text-align: left;
  }
}

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

.cta-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
}

@media (min-width: 768px) {
  .cta-title {
    font-size: 2rem;
  }
}

.cta-desc {
  font-size: 1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 0;
}

.cta-qr {
  display: inline-flex !important;
  flex-direction: row !important;
  align-items: center !important;
  gap: 12px;
  background: white;
  padding: 12px 16px;
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.15);
  width: auto;
  max-width: none;
  flex-shrink: 0;
}

.cta-qr-text {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cta-qr img {
  width: 80px !important;
  height: 80px !important;
  object-fit: cover;
}

.cta-qr-text .font-bold {
  color: var(--color-slate-800);
}

.cta-qr-text .text-indigo-200 {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.875rem;
}

/* 保留旧样式兼容性 */
.feature-card {
	background: white;
	border-radius: var(--radius-lg);
	padding: 16px;
	border: 1px solid var(--color-slate-100);
	transition: all var(--transition-smooth);
	cursor: default;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px -8px rgba(99, 102, 241, 0.12);
  border-color: rgba(99, 102, 241, 0.2);
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-xs);
  transition: transform var(--transition-smooth);
}

.feature-card:hover .feature-icon {
  transform: scale(1.1);
}

.feature-card h3 {
  margin-bottom: var(--space-xs);
  color: var(--color-slate-800);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--color-slate-500);
  line-height: 1.6;
}

/* 图标颜色变体 */
.feature-card .icon-blue { background: rgba(59, 130, 246, 0.1); color: var(--color-blue); }
.feature-card .icon-green { background: rgba(34, 197, 94, 0.1); color: var(--color-green); }
.feature-card .icon-pink { background: rgba(236, 72, 153, 0.1); color: var(--color-pink); }
.feature-card .icon-orange { background: rgba(249, 115, 22, 0.1); color: var(--color-orange); }
.feature-card .icon-cyan { background: rgba(6, 182, 212, 0.1); color: var(--color-cyan); }
.feature-card .icon-yellow { background: rgba(234, 179, 8, 0.1); color: var(--color-yellow); }
.feature-card .icon-purple { background: rgba(168, 85, 247, 0.1); color: var(--color-purple); }
.feature-card .icon-red { background: rgba(239, 68, 68, 0.1); color: var(--color-red); }

/* ---------- Footer ---------- */
.footer {
	background: var(--color-slate-900);
	color: white;
	padding: 32px 0 16px;
}

.footer-content {
	display: flex;
	flex-direction: column;
	gap: 24px;
	border-bottom: 1px solid var(--color-slate-800);
	padding-bottom: 24px;
}

@media (min-width: 768px) {
  .footer-content {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

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

@media (min-width: 768px) {
  .footer-brand {
    text-align: left;
  }
}

.footer-brand .brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
}

@media (min-width: 768px) {
  .footer-brand .brand {
    justify-content: flex-start;
  }
}

.footer-brand .brand img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

.footer-brand .brand span {
  font-size: 1.5rem;
  font-weight: 700;
}

.footer-brand p {
  color: var(--color-slate-400);
  font-size: 0.9375rem;
}

.footer-links {
  display: flex;
  gap: var(--space-xl);
}

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

@media (min-width: 768px) {
  .footer-column {
    text-align: left;
  }
}

.footer-column h4 {
  color: var(--color-primary-light);
  font-size: 0.9375rem;
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

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

.footer-column li {
  margin-bottom: var(--space-xs);
}

.footer-column a {
  color: var(--color-slate-400);
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-column a:hover {
  color: white;
}

.footer-column p {
  color: var(--color-slate-400);
  font-size: 0.875rem;
  line-height: 1.8;
}

.footer-bottom {
	text-align: center;
	padding-top: 16px;
	color: var(--color-slate-500);
	font-size: 0.875rem;
}

.footer-record {
  text-align: center;
  padding-top: 8px;
}

.footer-record a {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--color-slate-500);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.2s;
}

.footer-record a:hover {
  color: var(--color-slate-700);
}

.record-icon {
  width: 14px;
  height: 14px;
}

/* ---------- 移动端菜单面板 ---------- */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 280px;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  z-index: 999;
  transform: translateX(100%);
  transition: transform var(--transition-smooth);
  padding: 100px var(--space-lg) var(--space-lg);
  box-shadow: -10px 0 40px rgba(0, 0, 0, 0.1);
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-smooth);
}

.mobile-menu-overlay.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.mobile-menu-nav a {
  display: block;
  padding: var(--space-sm) 0;
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--color-slate-700);
  border-bottom: 1px solid var(--color-slate-100);
  transition: color var(--transition-fast);
}

.mobile-menu-nav a:hover {
  color: var(--color-primary);
}

.mobile-menu-nav .btn {
  margin-top: var(--space-md);
  width: 100%;
  text-align: center;
}

/* ---------- 滚动动画触发元素 ---------- */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 交错动画延迟 */
.fade-up.delay-1 { transition-delay: 0.1s; }
.fade-up.delay-2 { transition-delay: 0.2s; }
.fade-up.delay-3 { transition-delay: 0.3s; }
.fade-up.delay-4 { transition-delay: 0.4s; }

/* ---------- 骨架屏加载 ---------- */
.skeleton {
  background: linear-gradient(90deg, var(--color-slate-100) 25%, var(--color-slate-50) 50%, var(--color-slate-100) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
}

/* ---------- 图片懒加载 ---------- */
img[data-src] {
  opacity: 0;
  transition: opacity var(--transition-base);
}

img.loaded {
  opacity: 1;
}

/* ---------- 响应式隐藏 ---------- */
@media (max-width: 767px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 768px) {
	.hide-desktop {
		display: none !important;
	}
}

/* ---------- 统计数据区域 ---------- */
.stats-section {
	position: relative;
	padding: 32px 0;
	overflow: hidden;
}

.stats-bg {
	position: absolute;
	inset: 0;
  background: linear-gradient(135deg, #6366f1 0%, #87CEFA 50%, #87CEFA 100%);
	z-index: 0;
}

.stats-content {
	position: relative;
	z-index: 1;
	display: flex;
	justify-content: center;
	align-items: center;
	gap: 0;
}

.stats-item {
	text-align: center;
	padding: 0 32px;
}

.stats-num {
	font-size: 2.5rem;
	font-weight: 800;
	color: white;
	line-height: 1.2;
	margin-bottom: 4px;
}

.stats-text {
	font-size: 0.9375rem;
	color: rgba(255, 255, 255, 0.8);
	font-weight: 500;
}

.stats-line {
	width: 1px;
	height: 48px;
	background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 767px) {
	.stats-section {
		padding: 24px 0;
	}

	.stats-content {
		flex-wrap: wrap;
		gap: 24px;
	}

	.stats-item {
		flex: 0 0 calc(50% - 12px);
		padding: 0;
	}

	.stats-line {
		display: none;
	}

	.stats-num {
		font-size: 1.75rem;
	}
}

/* ---------- 用户评价区域 ---------- */
.testimonials {
	padding: 40px 0;
	background: white;
}

.testimonials .text-center {
	text-align: center;
	margin-bottom: 24px;
}

.testimonials h2 {
	font-size: 1.5rem;
	font-weight: 700;
	margin-bottom: 8px;
}

.testimonials .text-slate-500 {
	color: var(--color-slate-500);
}

.testimonials .grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: 20px;
}

@media (min-width: 768px) {
	.testimonials .grid {
		grid-template-columns: repeat(3, 1fr);
	}
}

.testimonials .p-5 {
	padding: 20px;
	border-radius: var(--radius-xl);
	background: var(--color-slate-50);
	border: 1px solid var(--color-slate-100);
}

.testimonials .flex {
	display: flex;
	align-items: center;
	gap: 12px;
	margin-bottom: 12px;
}

.testimonials .w-10 {
	width: 40px;
	height: 40px;
}

.testimonials .rounded-full {
	border-radius: 50%;
}

.testimonials .font-semibold {
	font-weight: 600;
}

.testimonials .text-sm {
	font-size: 0.875rem;
}

.testimonials .text-xs {
	font-size: 0.75rem;
}

.testimonials .text-slate-400 {
	color: var(--color-slate-400);
}

.testimonials .text-slate-600 {
	color: var(--color-slate-600);
	line-height: 1.6;
}

/* ---------- CTA 行动召唤 ---------- */
.cta-section {
	padding: 40px 0;
	background: var(--color-slate-50);
}

.cta-section .max-w-2xl {
	max-width: 672px;
	margin: 0 auto;
}

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

.cta-section h2 {
	font-size: 1.5rem;
	font-weight: 700;
	margin-bottom: 12px;
}

@media (min-width: 768px) {
	.cta-section h2 {
		font-size: 1.875rem;
	}
}

.cta-section .text-slate-500 {
	color: var(--color-slate-500);
	margin-bottom: 24px;
}

.cta-section .inline-flex {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	background: white;
	padding: 12px;
	border-radius: var(--radius-xl);
	box-shadow: var(--shadow-md);
}

.cta-section .w-16 {
	width: 64px;
	height: 64px;
}

.cta-section .rounded-lg {
	border-radius: var(--radius-md);
}

.cta-section .text-left {
	text-align: left;
}

.cta-section .font-bold {
	font-weight: 700;
}

.cta-section .text-xs {
	font-size: 0.75rem;
}

/* ---------- 扫码弹窗 ---------- */
.qr-modal {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
}

.qr-modal.active {
  opacity: 1;
  visibility: visible;
}

.qr-modal-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

.qr-modal-content {
  position: relative;
  background: white;
  border-radius: var(--radius-2xl);
  padding: 32px;
  max-width: 320px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.qr-modal.active .qr-modal-content {
  transform: scale(1);
}

.qr-modal-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.qr-modal-img {
  width: 200px;
  height: 200px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  box-shadow: 0 8px 32px rgba(99, 102, 241, 0.2);
}

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

.qr-modal-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-slate-900);
  margin-bottom: 8px;
}

.qr-modal-desc {
  font-size: 1rem;
  color: var(--color-slate-500);
}