/* ===== 设计系统变量 ===== */
:root {
  /* 主色调 */
  --primary-color: #1bbf7a;
  --primary-dark: #159e62;
  --primary-light: #b2dfd3;
  --primary-bg: #e6f2ea;
  --primary-border: #e6f2ea;
  
  /* 辅助色 */
  --text-primary: #222;
  --text-secondary: #333;
  --text-muted: #888;
  --bg-primary: #f7faf9;
  --bg-secondary: #fff;
  --bg-light: #f8fafd;
  
  /* 圆角 */
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 32px;
  
  /* 间距 */
  --spacing-xs: 8px;
  --spacing-sm: 16px;
  --spacing-md: 24px;
  --spacing-lg: 32px;
  --spacing-xl: 48px;
  
  /* 阴影 */
  --shadow-none: none;
  --shadow-sm: 0 2px 8px rgba(27,191,122,0.08);
  --shadow-md: 0 6px 24px rgba(27,191,122,0.08);
  
  /* 过渡 */
  --transition-fast: 0.16s;
  --transition-normal: 0.18s;
  --transition-slow: 0.22s;
}

/* ===== 基础样式 ===== */
* {
  box-sizing: border-box;
}

body, html {
  margin: 0 !important;
  padding: 0 !important;
}

header, .navbar {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  line-height: 1.7;
  letter-spacing: 0.02em;
  margin: 0;
  padding: 0;
  padding-top: 72px; /* 如导航栏高度有变化请同步调整 */
}

header, .navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 48px;
  box-sizing: border-box;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  z-index: 1000;
  background: #f9fcfa;
  box-shadow: none;
}

h1, h2, h3 {
  font-weight: 700;
  color: var(--primary-color);
  margin-bottom: 0.6em;
  letter-spacing: 0.04em;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

/* ===== 导航栏 ===== */
.navbar {
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--primary-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  font-size: 1.7rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: #222;
  margin: 0;
  padding: 0;
  line-height: 1;
  display: flex;
  align-items: center;
  height: 100%;
}

nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

nav a {
  color: var(--text-primary);
  font-weight: 500;
  font-size: 1.13rem;
  text-decoration: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  position: relative;
  line-height: 1;
}

nav a:hover,
nav a.active {
  color: var(--primary-color);
  font-weight: 700;
  font-size: 1.18rem;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 4px;
  background: var(--primary-color);
  border-radius: 2px;
  transition: width var(--transition-slow) cubic-bezier(.4,0,.2,1);
  opacity: 0;
}

nav a:hover::after,
nav a.active::after {
  width: 70%;
  opacity: 1;
}

/* ===== 按钮样式 ===== */
.btn,
.download-btn,
button[type="submit"] {
  border-radius: var(--radius-lg);
  font-size: 1.12rem;
  padding: 13px 38px;
  background: var(--primary-color);
  color: var(--bg-secondary);
  border: none;
  box-shadow: var(--shadow-none);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  text-align: center;
  transition: all var(--transition-normal);
  font-weight: 500;
}

.btn:hover,
.download-btn:hover,
button[type="submit"]:hover {
  background: var(--primary-dark);
  color: var(--bg-secondary);
  transform: translateY(-2px) scale(1.02);
}

/* ===== 输入框样式 ===== */
input[type="text"],
input[type="email"],
textarea {
  border-radius: var(--radius-md);
  font-size: 1.05rem;
  padding: 14px var(--spacing-sm);
  background: var(--bg-light);
  border: 1.5px solid var(--primary-border);
  transition: all var(--transition-normal);
  width: 100%;
  font-family: inherit;
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  border: 1.5px solid var(--primary-color);
  background: var(--bg-secondary);
  outline: none;
}

button[type="submit"] {
  width: 100%;
  margin-top: var(--spacing-xs);
}

/* ===== 卡片样式 ===== */
.feature-card {
  border-radius: var(--radius-lg);
  padding: 38px 18px 28px 18px;
  background: var(--bg-secondary);
  border: 1.5px solid var(--primary-border);
  transition: all var(--transition-normal);
  text-align: center;
  margin-bottom: 0;
  box-shadow: var(--shadow-none);
}

.feature-card:hover {
  border: 1.5px solid var(--primary-color);
  background: var(--bg-light);
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-md);
}

.feature-card h3 {
  font-size: 1.13rem;
  margin-bottom: 10px;
  color: var(--primary-color);
  letter-spacing: 0.03em;
}

.feature-card p {
  color: var(--text-secondary);
  font-size: 1.01rem;
  margin-bottom: 0;
}

.feature-card img,
.feature-card svg {
  width: 44px;
  height: 44px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: var(--primary-bg);
  padding: 8px;
  box-sizing: content-box;
  transition: all var(--transition-normal);
}

.feature-card:hover img,
.feature-card:hover svg {
  background: var(--primary-light);
  transform: scale(1.10);
}

/* ===== 网格布局 ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

/* ===== 分区样式 ===== */
.hero {
  background: var(--primary-bg);
  padding: 72px 0 var(--spacing-xl) 0;
  border-radius: 0 0 var(--radius-xl) var(--radius-xl);
  box-shadow: var(--shadow-none);
}

.hero-flex {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.hero-text {
  flex: 1 1 350px;
  min-width: 260px;
}

.hero-text h1 {
  font-size: 2.6rem;
  color: var(--primary-color);
  margin-bottom: 18px;
  letter-spacing: 0.06em;
}

.hero-text p {
  font-size: 1.18rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.hero-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.hero-features li {
  margin-bottom: 10px;
  font-size: 1.05rem;
  position: relative;
  padding-left: 18px;
  color: var(--primary-color);
  letter-spacing: 0.02em;
}

.hero-features li::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background: var(--primary-light);
  border-radius: 50%;
  position: absolute;
  left: 0;
  top: 7px;
}

.hero-img {
  flex: 1 1 300px;
  text-align: right;
  min-width: 180px;
}

.hero-img svg,
.hero-img img {
  max-width: 320px;
  width: 80%;
  min-width: 180px;
  border-radius: var(--radius-xl);
  background: var(--bg-secondary);
  box-shadow: var(--shadow-none);
}

/* ===== 分区标题 ===== */
.features h2,
.data-section h2,
.ai-section h2,
.vip-section h2,
.about-section h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 6px;
  font-size: 1.7rem;
  margin-bottom: var(--spacing-lg);
  letter-spacing: 0.06em;
}

.features h2::after,
.data-section h2::after,
.ai-section h2::after,
.vip-section h2::after,
.about-section h2::after {
  content: '';
  display: block;
  width: 36px;
  height: 3px;
  background: var(--primary-color);
  border-radius: 2px;
  margin: 8px auto 0 auto;
  opacity: 0.18;
}

/* ===== 页脚 ===== */
.footer {
  background: var(--primary-color);
  color: var(--bg-secondary);
  padding: 32px 0 12px 0;
  font-size: 1.03rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-none);
  margin-top: var(--spacing-xl);
}

.footer-flex {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.footer-section h4 {
  color: var(--bg-secondary);
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
}

.footer-section p {
  margin: 6px 0;
  font-size: 0.95rem;
  color: var(--primary-light);
}

.footer a {
  color: var(--bg-secondary);
  text-decoration: underline;
  transition: color var(--transition-normal);
}

.footer a:hover {
  color: var(--primary-light);
}

.footer-beian {
  width: 100%;
  text-align: center;
  margin-top: var(--spacing-sm);
  font-size: 0.93rem;
  color: var(--primary-light);
  letter-spacing: 1px;
  border-top: 1px solid var(--primary-light);
  padding-top: var(--spacing-xs);
}

.footer-beian a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-normal);
}

.footer-beian a:hover {
  color: var(--bg-secondary);
  text-decoration: underline;
}

/* ===== 下载按钮组 ===== */
.download-btn-group {
  margin: var(--spacing-md) 0;
  display: flex;
  gap: var(--spacing-sm);
}

.download-btn.android {
  background: var(--primary-color);
  color: var(--bg-secondary);
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.download-btn.ios {
  background: var(--bg-secondary);
  color: var(--primary-color);
  padding: 12px 32px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--primary-color);
  text-decoration: none;
}

/* ===== 二维码 ===== */
.qrcode-box {
  margin: var(--spacing-sm) 0;
  text-align: center;
}

.qrcode-img {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
}

.qrcode-tip {
  margin-top: var(--spacing-xs);
  color: var(--text-muted);
}

.install-guide {
  margin-top: var(--spacing-md);
  text-align: left;
  max-width: 340px;
}

.install-list {
  padding-left: 18px;
}

/* 表单分组 */
.form-group {
  margin-bottom: 18px;
}
.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--primary-color);
}
.form-input, .form-textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1.5px solid var(--primary-border);
  border-radius: var(--radius-md);
  background: var(--bg-light);
  font-size: 1.05rem;
  transition: border var(--transition-normal), background var(--transition-normal);
  font-family: inherit;
}
.form-input:focus, .form-textarea:focus {
  border: 1.5px solid var(--primary-color);
  background: var(--bg-secondary);
  outline: none;
}
.form-error {
  color: #e74c3c;
  font-size: 0.97rem;
  margin-top: 4px;
  min-height: 18px;
  display: block;
}
.form-success {
  color: #1bbf7a;
  font-size: 0.97rem;
  margin-top: 4px;
  min-height: 18px;
  display: block;
}
.form-submit {
  background: var(--primary-color);
  color: #fff;
  padding: 12px 36px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 1.08rem;
  cursor: pointer;
  transition: background var(--transition-normal), transform 0.18s;
  font-weight: 600;
  margin-top: 8px;
}
.form-submit:hover {
  background: var(--primary-dark);
  transform: translateY(-2px) scale(1.04);
}

/* 分区视觉层次 */
.section-bg {
  background: var(--primary-bg);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-lg) 0;
  margin-bottom: var(--spacing-lg);
}
.section-divider {
  border-top: 1.5px solid var(--primary-border);
  margin: var(--spacing-lg) 0;
}

/* 地图占位样式 */
.map-placeholder {
  width: 100%;
  height: 220px;
  background: var(--primary-bg);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.08rem;
  margin-top: var(--spacing-md);
}

/* ===== 响应式设计 ===== */

/* 大屏幕优化 */
@media (min-width: 1200px) {
  .container {
    max-width: 1200px;
  }
  
  .hero-text h1 {
    font-size: 3rem;
  }
  
  .features-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
  }
}

/* 中等屏幕 */
@media (max-width: 1100px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }
  
  .hero-text h1 {
    font-size: 2.2rem;
  }
}

/* 平板设备 */
@media (max-width: 900px) {
  .container {
    padding: 0 12px;
  }
  
  .nav-flex {
    height: 56px;
  }
  
  .logo {
    font-size: 1.8rem;
    height: 56px;
  }
  
  nav {
    gap: var(--spacing-sm);
  }
  
  nav a {
    font-size: 1rem;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
  }
  
  nav a:hover,
  nav a.active {
    font-size: 1.05rem;
    background: var(--primary-bg);
  }
  
  .hero {
    padding: 60px 0 var(--spacing-lg) 0;
  }
  
  .hero-text h1 {
    font-size: 2rem;
    margin-bottom: 16px;
  }
  
  .hero-text p {
    font-size: 1.1rem;
  }
  
  .hero-flex {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .hero-img {
    text-align: center;
  }
  
  .hero-img svg,
  .hero-img img {
    max-width: 240px;
    min-width: 120px;
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .feature-card {
    padding: 24px 16px 20px 16px;
  }
  
  .feature-card h3 {
    font-size: 1.1rem;
  }
  
  .ai-flex,
  .vip-flex {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-lg);
  }
  
  .ai-text,
  .vip-text {
    min-width: auto;
  }
  
  .footer-flex {
    flex-direction: column;
    text-align: center;
    gap: 16px;
  }
  
  .btn,
  .download-btn,
  button[type="submit"] {
    width: 100%;
    font-size: 1.05rem;
    padding: 12px 0;
  }
}

/* 手机设备 */
@media (max-width: 700px) {
  .container {
    padding: 0 8px;
  }
  
  .nav-flex {
    height: 48px;
  }
  
  .logo {
    font-size: 1.5rem;
    height: 48px;
  }
  
  nav {
    gap: 4px;
  }
  
  nav a {
    font-size: 0.9rem;
    padding: 6px 8px;
  }
  
  nav a:hover,
  nav a.active {
    font-size: 0.95rem;
  }
  
  .hero {
    padding: 48px 0 var(--spacing-md) 0;
  }
  
  .hero-text h1 {
    font-size: 1.8rem;
    margin-bottom: 12px;
  }
  
  .hero-text p {
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-features li {
    font-size: 0.95rem;
    margin-bottom: 8px;
  }
  
  .hero-img svg,
  .hero-img img {
    max-width: 180px;
    min-width: 100px;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  
  .feature-card {
    padding: 20px 12px 16px 12px;
    margin-bottom: 8px;
  }
  
  .feature-card h3 {
    font-size: 1rem;
  }
  
  .feature-card p {
    font-size: 0.9rem;
  }
  
  .feature-card img,
  .feature-card svg {
    width: 36px;
    height: 36px;
    padding: 6px;
  }
  
  .features h2,
  .data-section h2,
  .ai-section h2,
  .vip-section h2,
  .about-section h2 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
  }
  
  .download-btn-group {
    flex-direction: column;
    gap: 8px;
  }
  
  .download-btn.android,
  .download-btn.ios {
    padding: 10px 24px;
    font-size: 1rem;
  }
  
  .install-guide {
    max-width: 100%;
  }
  
  .qrcode-img {
    width: 100px;
    height: 100px;
  }
  
  .footer {
    padding: 20px 0 6px 0;
    font-size: 0.95rem;
  }
  
  .footer-beian {
    font-size: 0.85rem;
  }
}

/* 小屏手机 */
@media (max-width: 480px) {
  .container {
    padding: 0 6px;
  }
  
  .hero-text h1 {
    font-size: 1.6rem;
  }
  
  .hero-text p {
    font-size: 0.9rem;
  }
  
  .hero-features li {
    font-size: 0.9rem;
  }
  
  .feature-card {
    padding: 16px 8px 12px 8px;
  }
  
  .feature-card h3 {
    font-size: 0.95rem;
  }
  
  .feature-card p {
    font-size: 0.85rem;
  }
  
  .btn,
  .download-btn,
  button[type="submit"] {
    font-size: 1rem;
    padding: 10px 0;
  }
  
  .qrcode-img {
    width: 80px;
    height: 80px;
  }
}

/* 横屏模式优化 */
@media (max-height: 600px) and (orientation: landscape) {
  .hero {
    padding: 32px 0 var(--spacing-md) 0;
  }
  
  .hero-text h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
  }
  
  .hero-text p {
    margin-bottom: var(--spacing-sm);
  }
  
  .hero-features li {
    margin-bottom: 4px;
  }
}

/* 高分辨率屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
  .feature-card img,
  .feature-card svg {
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
  }
}

/* ===== 其他分区样式 ===== */
.features {
  background: transparent;
  padding: var(--spacing-xl) 0 var(--spacing-lg) 0;
}

.data-section,
.ai-section,
.vip-section,
.about-section {
  padding: var(--spacing-xl) 0;
}

.about-section,
.section,
.page-section,
.data-section,
.ai-section,
.vip-section {
  margin-top: 0 !important;
  padding-top: 0 !important;
}

.ai-section, .vip-section, .about-section {
  display: block !important;
  opacity: 1 !important;
  height: auto !important;
  min-height: 200px !important;
  visibility: visible !important;
}

.ai-flex,
.vip-flex {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.ai-text,
.vip-text {
  flex: 1 1 400px;
  min-width: 300px;
}

.ai-img,
.vip-img {
  flex: 1 1 300px;
  text-align: center;
  min-width: 200px;
}

.ai-img img,
.vip-img img {
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
}

@media (max-width: 900px) {
  .ai-flex,
  .vip-flex {
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-md);
  }
  
  .ai-text,
  .vip-text {
    min-width: auto;
  }
} 

/* 统一内容淡入动画 */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  animation: fadeInUp 0.6s cubic-bezier(.4,0,.2,1) forwards;
}
@keyframes fadeInUp {
  to {
    opacity: 1;
    transform: none;
  }
}

/* 页面切换遮罩动画 */
.page-transition-mask {
  position: fixed;
  z-index: 9999;
  inset: 0;
  background: #f9fcfa;
  opacity: 1;
  transition: opacity 0.4s cubic-bezier(.4,0,.2,1);
  pointer-events: none;
}
.page-transition-mask.hide {
  opacity: 0;
} 

.main-content, main, .fade-in {
  margin-top: 0 !important;
  padding-top: 0 !important;
} 

.hero-content {
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 48px 32px 64px 32px;
  gap: 64px;
}
.hero-text, .hero-image {
  flex: 1 1 0;
}
.hero-text {
  min-width: 320px;
}
.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}
@media (max-width: 900px) {
  .hero-content {
    flex-direction: column;
    gap: 32px;
    padding: 32px 12px 48px 12px;
  }
  .hero-text, .hero-image {
    width: 100%;
    min-width: 0;
  }
}