/*
  FishCast Pro - 专业渔情预报平台
  现代化、科技感、数据驱动的设计系统
*/

/* === 设计令牌 === */
:root {
  /* 色彩系统 - 专业科技风 */
  --primary: #0066FF;
  --primary-dark: #0052CC;
  --primary-light: #3385FF;
  
  --secondary: #6B73FF;
  --accent: #00D9FF;
  
  /* 中性色彩 */
  --gray-50: #F8FAFC;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1E293B;
  --gray-900: #0F172A;
  
  /* 功能色彩 */
  --success: #10B981;
  --warning: #F59E0B;
  --error: #EF4444;
  --info: var(--primary);
  
  /* 语义色彩 */
  --text-primary: var(--gray-900);
  --text-secondary: var(--gray-600);
  --text-muted: var(--gray-500);
  --text-inverse: #FFFFFF;
  
  --bg-primary: #FFFFFF;
  --bg-secondary: var(--gray-50);
  --bg-muted: var(--gray-100);
  --bg-dark: var(--gray-900);
  
  --border: var(--gray-200);
  --border-muted: var(--gray-100);
  
  /* 字体系统 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Monaco, Consolas, monospace;
  
  /* 字号比例 */
  --text-xs: 0.75rem;      /* 12px */
  --text-sm: 0.875rem;     /* 14px */
  --text-base: 1rem;       /* 16px */
  --text-lg: 1.125rem;     /* 18px */
  --text-xl: 1.25rem;      /* 20px */
  --text-2xl: 1.5rem;      /* 24px */
  --text-3xl: 1.875rem;    /* 30px */
  --text-4xl: 2.25rem;     /* 36px */
  --text-5xl: 3rem;        /* 48px */
  --text-6xl: 3.75rem;     /* 60px */
  
  /* 间距系统 */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  --space-32: 8rem;     /* 128px */
  
  /* 圆角系统 */
  --radius-sm: 6px;
  --radius: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* 阴影系统 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  
  /* 动画 */
  --transition-fast: 150ms ease-in-out;
  --transition: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* 布局 */
  --container-max-width: 1200px;
  --section-padding: var(--space-20);
  --navbar-height: 64px;
}

/* === 基础重置 === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  opacity: 1; /* 默认显示内容 */
  animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* 动画元素 */
.animate-element {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-element.animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* 交错动画延迟 */
.feature-item:nth-child(1) { transition-delay: 0.1s; }
.feature-item:nth-child(2) { transition-delay: 0.2s; }
.feature-item:nth-child(3) { transition-delay: 0.3s; }

/* === 容器 === */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-4);
  }
}

/* === 导航栏 === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-muted);
  transition: all var(--transition);
}

.nav-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: var(--text-sm);
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav-cta {
  padding: var(--space-2) var(--space-4);
  background: var(--primary);
  color: white;
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
}

.nav-cta:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

/* 导航栏包装器 */
.nav-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  width: 100%;
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

/* 导航动作按钮 */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 24px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.mobile-menu-btn span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-fast);
}

/* 按钮样式补充 */
.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: none;
}

.btn-ghost:hover {
  background: var(--bg-secondary);
}

.btn-sm {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  min-height: 32px;
}

.btn-block {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === Hero 区域 === */
.hero {
  padding: calc(64px + var(--section-padding)) 0 var(--section-padding);
  min-height: 90vh;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: 
    url("data:image/svg+xml,%3Csvg width='100' height='100' viewBox='0 0 100 100' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='%230ea5e9' fill-opacity='0.03'%3E%3Cpath d='M50 30c0-11.046-8.954-20-20-20s-20 8.954-20 20 8.954 20 20 20c6.627 0 12-5.373 12-12s-5.373-12-12-12c-3.313 0-6 2.687-6 6s2.687 6 6 6'/%3E%3C/g%3E%3C/svg%3E") repeat,
    linear-gradient(135deg, rgba(14,165,233,0.05) 0%, rgba(0,102,255,0.05) 100%),
    radial-gradient(ellipse at 20% 30%, rgba(59,130,246,0.1) 0%, transparent 40%),
    radial-gradient(ellipse at 80% 80%, rgba(14,165,233,0.1) 0%, transparent 40%),
    linear-gradient(180deg, #f0f9ff 0%, #ffffff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 波浪动画 */
@keyframes wave {
  0% { transform: translateX(0); }
  100% { transform: translateX(-100%); }
}

.hero::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 150px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%230ea5e9' fill-opacity='0.1' d='M0,96L60,112C120,128,240,160,360,165.3C480,171,600,149,720,144C840,139,960,149,1080,176C1200,203,1320,245,1380,266.7L1440,288L1440,320L1380,320C1320,320,1200,320,1080,320C960,320,840,320,720,320C600,320,480,320,360,320C240,320,120,320,60,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") repeat-x;
  animation: wave 20s linear infinite;
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 200%;
  height: 150px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%230066ff' fill-opacity='0.05' d='M0,192L60,186.7C120,181,240,171,360,181.3C480,192,600,224,720,218.7C840,213,960,171,1080,160C1200,149,1320,171,1380,181.3L1440,192L1440,320L1380,320C1320,320,1200,320,1080,320C960,320,840,320,720,320C600,320,480,320,360,320C240,320,120,320,60,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") repeat-x;
  animation: wave 25s linear infinite reverse;
  z-index: 0;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(0, 102, 255, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(107, 115, 255, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* 装饰元素 */
.hero-decoration {
  position: absolute;
  pointer-events: none;
  opacity: 0.12;
  z-index: 1;
  filter: blur(1px);
}

.hero-decoration.fish {
  font-size: 100px;
  top: 20%;
  right: 8%;
  animation: swim 15s ease-in-out infinite;
}

.hero-decoration.hook {
  font-size: 80px;
  top: 15%;
  left: 10%;
  animation: float 10s ease-in-out infinite;
}

.hero-decoration.wave-icon {
  font-size: 60px;
  bottom: 30%;
  right: 12%;
  animation: float 12s ease-in-out infinite reverse;
}

.hero-decoration.bubble1 {
  font-size: 25px;
  top: 45%;
  left: 6%;
  animation: bubble 8s ease-in-out infinite;
  filter: none;
  opacity: 0.08;
}

.hero-decoration.bubble2 {
  font-size: 18px;
  top: 65%;
  right: 7%;
  animation: bubble 10s ease-in-out infinite;
  animation-delay: 3s;
  filter: none;
  opacity: 0.08;
}

@keyframes swim {
  0%, 100% {
    transform: translateX(0) translateY(0) scaleX(1);
  }
  25% {
    transform: translateX(-40px) translateY(-20px) scaleX(1);
  }
  50% {
    transform: translateX(30px) translateY(15px) scaleX(-1);
  }
  75% {
    transform: translateX(-20px) translateY(-10px) scaleX(-1);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(-5deg);
  }
  50% {
    transform: translateY(-40px) rotate(5deg);
  }
}

@keyframes bubble {
  0%, 100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(-50px) scale(1.3);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  box-shadow: var(--shadow-sm);
}

.hero h1 {
  font-size: var(--text-5xl);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-6);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-12);
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

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

.stat-number {
  font-size: var(--text-3xl);
  font-weight: 800;
  color: var(--primary);
  margin-bottom: var(--space-1);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  font-weight: 500;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* === 按钮系统 === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  min-height: 48px;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-outline:hover {
  background: var(--gray-50);
  border-color: var(--primary);
  color: var(--primary);
}

.btn-small {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  min-height: 36px;
}

/* === 区域标题 === */
.section-title {
  font-size: var(--text-3xl);
  font-weight: 800;
  text-align: center;
  margin-bottom: var(--space-4);
  letter-spacing: -0.025em;
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  text-align: center;
  margin-bottom: var(--space-16);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
}

/* === Features 区域 === */
.features {
  padding: var(--section-padding) 0;
  background: var(--bg-primary);
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-8);
}

.feature-item {
  padding: var(--space-8);
  background: var(--bg-primary);
  border: 1px solid var(--border-muted);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition);
  position: relative;
}

.feature-item:hover {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  background: var(--primary);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.feature-item h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.feature-item p {
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.feature-metrics {
  display: flex;
  justify-content: space-around;
  gap: var(--space-4);
}

.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--primary);
}

.metric-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

/* === Solutions 区域 === */
.solutions {
  padding: var(--section-padding) 0;
  background: var(--bg-secondary);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  max-width: 1000px;
  margin: 0 auto;
}

.solution-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  position: relative;
  transition: all var(--transition);
}

.solution-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.05);
}

.solution-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: white;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
}

.solution-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.solution-header h3 {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
}

.solution-price {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: var(--space-1);
}

.price-currency {
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.price-amount {
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--primary);
}

.price-period {
  color: var(--text-muted);
}

.price-text {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--primary);
}

.solution-features {
  margin-bottom: var(--space-8);
}

.solution-features .feature {
  padding: var(--space-2) 0;
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

.solution-cta {
  display: block;
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--gray-100);
  color: var(--text-primary);
  text-align: center;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all var(--transition);
  border: 1px solid var(--border);
}

.solution-cta.primary {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.solution-cta:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.solution-cta.primary:hover {
  background: var(--primary-dark);
}

/* === Product Features Detail Section === */
.product-features {
  padding: var(--section-padding) 0;
  background: linear-gradient(180deg, #fafafa 0%, #ffffff 100%);
  overflow: hidden;
  position: relative;
}

.product-features::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
}

.feature-showcase {
  margin-top: var(--space-16);
}

.feature-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  margin-bottom: var(--space-20);
  padding: 0 var(--space-4);
}

.feature-detail.reverse {
  direction: rtl;
}

.feature-detail.reverse .feature-content,
.feature-detail.reverse .feature-visual {
  direction: ltr;
}

.feature-content h3 {
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.feature-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-6) 0;
}

.feature-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  color: var(--text-secondary);
}

.feature-list .check {
  color: var(--success);
  font-weight: 600;
  font-size: var(--text-lg);
}

.feature-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-6);
}

.feature-stats .stat {
  text-align: center;
}

.feature-stats .stat-value {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--space-1);
}

.feature-stats .stat-label {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

/* Feature Visuals */
.feature-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  min-height: 400px;
}

/* Weather Demo */
.weather-demo {
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
}

.weather-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 20px 40px rgba(0,0,0,0.15);
  color: white;
  position: relative;
  overflow: hidden;
}

.weather-card::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  animation: pulse 4s ease-in-out infinite;
}

.weather-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  color: white;
}

.weather-date {
  background: rgba(255,255,255,0.2);
  padding: 6px 14px;
  border-radius: 20px;
  backdrop-filter: blur(10px);
  font-size: 14px;
  font-weight: 500;
}

.weather-score {
  background: linear-gradient(90deg, #10b981, #34d399);
  color: white;
  padding: 6px 14px;
  border-radius: 20px;
  font-weight: 600;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(16,185,129,0.25);
}

.weather-main {
  text-align: center;
  margin-bottom: var(--space-4);
}

.weather-temp {
  font-size: 3.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: var(--space-2);
  text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.weather-condition {
  font-size: var(--text-xl);
  color: rgba(255,255,255,0.95);
  font-weight: 500;
}

.weather-details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255,255,255,0.2);
  margin-top: var(--space-6);
}

.weather-details .detail {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.1);
  padding: 12px 8px;
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.detail-label {
  font-size: 12px;
  color: rgba(255,255,255,0.7);
  font-weight: 500;
}

.detail-value {
  font-size: 15px;
  color: white;
  font-weight: 600;
}

/* 现代天气卡片样式 */
.weather-card-modern {
  background: linear-gradient(135deg, #7c3aed 0%, #a855f7 50%, #c084fc 100%);
  border-radius: 24px;
  padding: 28px;
  color: white;
  box-shadow: 0 20px 40px rgba(124, 58, 237, 0.25);
  position: relative;
  overflow: hidden;
  min-height: 280px;
}

.weather-card-modern .weather-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.weather-badge {
  background: rgba(255, 255, 255, 0.2);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 500;
  backdrop-filter: blur(10px);
}

.fishing-index-badge {
  background: linear-gradient(90deg, #10b981, #34d399);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.weather-display {
  text-align: center;
  margin: 32px 0;
}

.temp-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}

.temp-value {
  font-size: 48px;
  font-weight: 700;
  line-height: 1;
  text-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.weather-desc {
  font-size: 20px;
  font-weight: 500;
  opacity: 0.95;
}

.weather-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.metric-item {
  text-align: center;
  padding: 8px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.metric-label {
  display: block;
  font-size: 12px;
  opacity: 0.8;
  margin-bottom: 4px;
  font-weight: 500;
}

.metric-value {
  display: block;
  font-size: 16px;
  font-weight: 600;
}

/* Tide Demo */
.tide-demo {
  width: 100%;
  max-width: 420px;
  margin: 0 auto;
}

.tide-chart {
  background: linear-gradient(180deg, #e0f2fe 0%, #bae6fd 50%, #7dd3fc 100%);
  border: none;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
  position: relative;
  overflow: hidden;
}

.tide-chart::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 30%;
  background: linear-gradient(180deg, transparent, rgba(59,130,246,0.1));
}

.tide-wave {
  width: 100%;
  height: auto;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.tide-wave path {
  stroke: #0ea5e9;
  stroke-width: 3;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.tide-wave circle {
  fill: #0284c7;
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
  transform-origin: center;
}

/* 潮汐点动画 */
.tide-wave circle {
  animation: tidePulse 4s ease-in-out infinite;
  transform-origin: center;
}

/* 第一个高潮点 */
.tide-wave circle:nth-of-type(1) {
  animation-delay: 0s;
}

/* 低潮点 */
.tide-wave circle:nth-of-type(2) {
  animation-delay: 1s;
}

/* 第二个高潮点 */
.tide-wave circle:nth-of-type(3) {
  animation-delay: 2s;
}

@keyframes tidePulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(1.3);
  }
}

.tide-label {
  fill: #075985;
  font-size: 11px;
  font-weight: 600;
}

.tide-times {
  display: flex;
  justify-content: space-around;
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(14,165,233,0.2);
}

.tide-time {
  font-size: var(--text-base);
  color: #0c4a6e;
  font-weight: 600;
  background: rgba(255,255,255,0.5);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
}

/* Community Demo */
.community-demo {
  width: 100%;
  max-width: 380px;
  margin: 0 auto;
}

.community-posts {
  background: white;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  position: relative;
}

.community-posts::before {
  content: '🎣 社区动态';
  position: absolute;
  top: -12px;
  left: var(--space-4);
  background: white;
  padding: 0 var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
  font-weight: 600;
}

.post-item {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.post-item:hover {
  background: var(--gray-50);
  transform: translateX(4px);
  border-color: var(--primary-light);
}

.post-item + .post-item {
  margin-top: var(--space-3);
}

.post-avatar {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  border-radius: var(--radius-full);
  font-size: var(--text-xl);
  flex-shrink: 0;
  box-shadow: 0 2px 8px rgba(0,102,255,0.2);
}

.post-content {
  flex: 1;
}

.post-user {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.post-text {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}

/* === About 区域 === */
.about {
  padding: var(--section-padding) 0;
  background: var(--bg-primary);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: start;
}

.about-text {
  max-width: 520px;
}

.about-text .section-title {
  text-align: left;
}

.about-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--space-8);
}

.company-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
  margin-bottom: var(--space-8);
  text-align: center;
}

.about-features .feature-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6) 0;
  border: none;
  text-align: left;
  background: transparent;
}

.about-features .feature-item:hover {
  transform: none;
  box-shadow: none;
}

.about-features .feature-icon {
  width: 48px;
  height: 48px;
  margin: 0;
  background: var(--gray-100);
  color: var(--primary);
  flex-shrink: 0;
}

.feature-content h4 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.feature-content p {
  color: var(--text-secondary);
  margin: 0;
  font-size: var(--text-base);
}

/* === Footer === */
.footer {
  background: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--space-20) 0 var(--space-8);
}

.footer-content {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.footer-main {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-16);
  margin-bottom: var(--space-12);
}

.footer-logo {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-4);
  color: var(--accent);
}

.footer-description {
  color: var(--gray-400);
  margin-bottom: var(--space-6);
  line-height: 1.7;
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
}

.footer-col h6 {
  color: var(--text-inverse);
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

.footer-col li {
  margin-bottom: var(--space-2);
}

.footer-col a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: color var(--transition);
}

.footer-col a:hover {
  color: var(--text-inverse);
}

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: var(--space-6);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--gray-500);
}

/* === 移动端优化 === */
@media (max-width: 768px) {
  :root {
    --section-padding: var(--space-16);
  }
  
  .nav-links {
    display: none;
  }
  
  .hero h1 {
    font-size: var(--text-4xl);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-6);
  }
  
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    /* width: 100%; */
    max-width: 300px;
  }
  
  .feature-grid,
  .solutions-grid {
    grid-template-columns: 1fr;
  }
  
  .about-content {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .company-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .footer-main {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .footer-links {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8) var(--space-6);
  }
  
  .solution-card.featured {
    transform: none;
  }
}

@media (max-width: 640px) {
  .hero-stats {
    gap: var(--space-4);
  }
  
  .stat-item {
    padding: var(--space-4);
    background: var(--bg-primary);
    border-radius: var(--radius);
    border: 1px solid var(--border-muted);
  }
  
  .company-stats {
    grid-template-columns: 1fr;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

/* === 工具类 === */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.mb-0 { margin-bottom: 0; }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.mt-0 { margin-top: 0; }
.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }

/* === 下载页面样式 === */
.download-hero {
  background: var(--bg-secondary);
  padding: calc(64px + var(--space-12)) 0 var(--space-12);
  border-bottom: 1px solid var(--border);
  text-align: center;
  margin-top: 64px;
}

.download-header {
  max-width: 600px;
  margin: 0 auto;
}

.download-header h1 {
  font-size: 2.5rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
}

.download-header .subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.download-section {
  padding: var(--space-16) 0;
}

.download-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-16);
}

.download-card {
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  text-align: center;
  transition: all 0.3s ease;
}

.download-card:hover {
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  transform: translateY(-4px);
}

.platform-icon {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-6);
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  color: var(--primary);
}

.download-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.platform-desc {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

.version-info {
  display: flex;
  justify-content: center;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
  font-size: 0.875rem;
}

.version {
  background: var(--primary);
  color: white;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.size {
  color: var(--text-muted);
}

.download-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  width: 100%;
  padding: var(--space-3) var(--space-4);
  min-height: 44px;
}

.download-note {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: var(--space-3);
}

.desktop-downloads {
  display: flex;
  gap: var(--space-2);
  justify-content: center;
  margin-bottom: var(--space-4);
}

/* 配套应用 */
.companion-apps {
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  border-top: 1px solid var(--border);
}

.companion-apps h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--space-8);
}

.apps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

.app-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: background 0.2s ease;
  justify-content: space-between;
}

.app-item:hover {
  background: var(--bg-muted);
}

.app-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  border-radius: var(--radius-md);
  color: var(--primary);
}

.app-info {
  flex: 1;
}

.app-info h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.app-info p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.app-item .btn {
  flex-shrink: 0;
}

/* 系统要求 */
.requirements {
  margin-top: var(--space-16);
  padding-top: var(--space-16);
  border-top: 1px solid var(--border);
}

.requirements h2 {
  font-size: 1.75rem;
  font-weight: 600;
  margin-bottom: var(--space-8);
}

.requirements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
}

.requirement-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--primary);
}

.requirement-item ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.requirement-item li {
  padding: var(--space-2) 0;
  padding-left: 1.5rem;
  position: relative;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.requirement-item li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: bold;
}

/* === Footer === */
.footer {
  background: var(--bg-dark);
  color: var(--text-inverse);
  padding: var(--space-16) 0 var(--space-8);
  margin-top: auto;
}

.footer-content,
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-8);
  margin-bottom: var(--space-12);
  max-width: var(--container-max-width);
  margin: 0 auto var(--space-12);
  padding: 0 var(--space-6);
}

.footer-section,
.footer-col {
  padding: 0;
}

.footer-section h5,
.footer-col h5 {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.footer-section ul,
.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-section li,
.footer-col li {
  margin-bottom: var(--space-2);
}

.footer-section a,
.footer-col a {
  color: var(--gray-300);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 0.2s ease;
}

.footer-section a:hover,
.footer-col a:hover {
  color: var(--text-inverse);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center !important;
  color: var(--gray-400);
  font-size: 0.875rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.footer-bottom p {
  margin: var(--space-2) 0;
  text-align: center !important;
  width: 100%;
}

.footer-bottom a {
  color: var(--gray-300);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--text-inverse);
}

/* === Modal === */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 9999;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6);
  border-bottom: 1px solid var(--border);
}

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease;
}

.modal-close:hover {
  background: var(--bg-secondary);
}

.modal-body {
  padding: var(--space-6);
}

.contact-info {
  margin-top: var(--space-4);
}

.contact-item {
  padding: var(--space-4) 0;
  border-bottom: 1px solid var(--border);
}

.contact-item:last-child {
  border-bottom: none;
}

.contact-item strong {
  display: inline-block;
  min-width: 80px;
  color: var(--text-secondary);
  margin-right: var(--space-3);
}

.contact-item a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

.contact-item span {
  color: var(--text-primary);
}

/* === 二维码弹窗样式 === */
.qrcode-modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
}

.qrcode-modal.active {
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.qrcode-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.qrcode-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  max-width: 400px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  text-align: center;
  animation: slideUp 0.4s ease;
}

.qrcode-close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.qrcode-close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.qrcode-app-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto var(--space-4);
}

.qrcode-app-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.qrcode-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--space-3);
}

.qrcode-image-container {
  margin: var(--space-4) 0;
  padding: var(--space-4);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  display: inline-block;
}

#qrcode-image {
  width: 200px;
  height: 200px;
  display: block;
}

.qrcode-desc {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  margin-bottom: var(--space-3);
}

.qrcode-app-info {
  padding: var(--space-3);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-3);
}

#app-name {
  font-weight: 600;
  color: var(--primary);
}

.qrcode-tip {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.qrcode-tip strong {
  color: var(--text-secondary);
  font-weight: 500;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translate(-50%, -40%);
    opacity: 0;
  }
  to {
    transform: translate(-50%, -50%);
    opacity: 1;
  }
}

/* === 响应式设计 === */
@media (max-width: 768px) {
  /* 导航栏移动端 */
  .nav-links {
    display: none;
  }
  
  .nav-actions {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  /* Footer移动端优化 */
  .footer {
    padding: 40px 0 24px;
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
    padding: 0 20px;
  }

  .footer-col {
    padding: 16px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .footer-col:last-child {
    border-bottom: none;
  }

  .footer-col h5 {
    font-size: 16px;
    margin-bottom: 12px;
    color: white;
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
  }

  .footer-col ul {
    margin-top: 8px;
  }

  .footer-col ul li {
    padding: 6px 0;
  }

  .footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    display: block;
    padding: 4px 0;
  }

  .footer-col ul.social {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
  }

  .footer-col ul.social li {
    flex: none;
  }

  .footer-bottom {
    margin-top: 24px;
    padding: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center !important;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }

  .footer-bottom p {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.8;
    margin: 4px 0;
    text-align: center !important;
    width: 100%;
  }

  .footer-bottom a {
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
    font-size: 12px;
    word-break: break-all;
  }
  
  /* 英雄区移动端 */
  .hero h1 {
    font-size: 2rem;
  }
  
  .hero .subtitle {
    font-size: 1rem;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
  
  /* 统计数据移动端 */
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  /* 功能区移动端 */
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  /* 定价卡片移动端 */
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  
  /* 页脚移动端 */
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
  }
  
  .footer-content {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-8);
  }
  
  /* 关于区块移动端 */
  .company-stats {
    grid-template-columns: repeat(2, 1fr);
    text-align: center;
    justify-items: center;
  }
  
  .company-stats .stat-item {
    text-align: center;
    width: 100%;
  }
  
  /* 下载页面移动端 */
  .download-grid {
    grid-template-columns: 1fr;
  }
  
  .apps-grid {
    grid-template-columns: 1fr;
  }
  
  .requirements-grid {
    grid-template-columns: 1fr;
  }
  
  .desktop-downloads {
    flex-direction: column;
  }
  
  .desktop-downloads .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  /* 超小屏幕优化 */
  .container {
    padding: 0 var(--space-4);
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }
  
  .footer-grid,
  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
  }
  
  .company-stats {
    grid-template-columns: 1fr;
    text-align: center;
    justify-items: center;
  }
  
  .company-stats .stat-item {
    text-align: center;
    width: 100%;
  }
}