/* ============================================
   哇塞科技 - 公众号矩阵管理系统 官网样式
   ============================================ */

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

:root {
  --primary: #07C160;
  --primary-dark: #06AD56;
  --primary-light: #e8f8ef;
  --text: #1a1a2e;
  --text-secondary: #555;
  --text-light: #888;
  --bg: #ffffff;
  --bg-gray: #f5f7fa;
  --bg-dark: #1a1a2e;
  --border: #e8e8e8;
  --shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --max-width: 1200px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  color: var(--primary-dark);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   Header / Navigation
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}

.header.scrolled {
  box-shadow: var(--shadow);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.logo .icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo .icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav a {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}

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

.nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s;
  border-radius: 1px;
}

.nav a:hover::after,
.nav a.active::after {
  width: 100%;
}

.nav .btn-login {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 20px;
  background: var(--primary);
  color: #fff !important;
  border-radius: 20px;
  font-weight: 600;
  transition: background 0.2s, transform 0.2s;
}

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

.nav .btn-login::after {
  display: none;
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  padding: 140px 0 80px;
  background: linear-gradient(135deg, #f0faf4 0%, #e8f8ef 30%, #f5f7fa 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(7, 193, 96, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(7, 193, 96, 0.06) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(7, 193, 96, 0.1);
  color: var(--primary-dark);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 20px;
  color: var(--text);
  letter-spacing: -0.02em;
}

.hero h1 .highlight {
  color: var(--primary);
  position: relative;
}

.hero p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 28px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 16px rgba(7, 193, 96, 0.3);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 24px rgba(7, 193, 96, 0.4);
  transform: translateY(-2px);
  color: #fff;
}

.btn-outline {
  background: #fff;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline:hover {
  background: var(--primary-light);
  color: var(--primary-dark);
}

/* Hero Stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 60px;
  margin-top: 56px;
  padding-top: 40px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
}

.hero-stats .stat h3 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 4px;
}

.hero-stats .stat p {
  font-size: 0.875rem;
  color: var(--text-light);
  margin: 0;
}

/* ============================================
   Section Common Styles
   ============================================ */
.section {
  padding: 80px 0;
}

.section-gray {
  background: var(--bg-gray);
}

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

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ============================================
   Features Grid
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 36px 28px;
  box-shadow: var(--shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--border);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text);
}

.feature-card p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ============================================
   Service Detail Cards
   ============================================ */
.services-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.service-item {
  display: flex;
  gap: 28px;
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.3s;
}

.service-item:hover {
  transform: translateX(4px);
}

.service-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  font-weight: 700;
}

.service-content h3 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.service-content p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.service-tags {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.service-tags span {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 20px;
  font-size: 0.8125rem;
  font-weight: 500;
}

/* ============================================
   How It Works / Flow
   ============================================ */
.flow-steps {
  display: flex;
  justify-content: center;
  gap: 40px;
  flex-wrap: wrap;
}

.flow-step {
  text-align: center;
  flex: 1;
  min-width: 200px;
  max-width: 260px;
  position: relative;
}

.flow-step::after {
  content: '→';
  position: absolute;
  right: -28px;
  top: 36px;
  font-size: 1.5rem;
  color: var(--primary);
  font-weight: 700;
}

.flow-step:last-child::after {
  display: none;
}

.flow-step-icon {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 16px;
}

.flow-step h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--text);
}

.flow-step p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   About Section
   ============================================ */
.about-content {
  display: flex;
  gap: 60px;
  align-items: flex-start;
}

.about-text {
  flex: 1;
}

.about-text h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--text);
}

.about-text p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-info {
  flex-shrink: 0;
  width: 340px;
  background: #fff;
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
}

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

.info-item .info-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
  width: 28px;
  text-align: center;
}

.info-item .info-label {
  font-size: 0.8125rem;
  color: var(--text-light);
  margin-bottom: 2px;
}

.info-item .info-value {
  font-size: 0.9375rem;
  color: var(--text);
  font-weight: 500;
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: #fff;
  text-align: center;
  padding: 72px 0;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.0625rem;
  opacity: 0.9;
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.cta-section .btn {
  background: #fff;
  color: var(--primary);
  font-weight: 700;
}

.cta-section .btn:hover {
  background: #f0faf4;
  transform: translateY(-2px);
  color: var(--primary-dark);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 48px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.footer-col p {
  font-size: 0.875rem;
  line-height: 1.8;
  margin-bottom: 8px;
}

.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
  transition: color 0.2s;
}

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

.footer-links {
  list-style: none;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  text-align: center;
  font-size: 0.8125rem;
}

.footer-bottom a {
  color: rgba(255, 255, 255, 0.5);
}

/* ============================================
   Content Page Styles (Agreement, Privacy)
   ============================================ */
.content-page {
  padding: 120px 0 80px;
}

.content-page h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 32px;
  text-align: center;
}

.content-page .content-body {
  max-width: 800px;
  margin: 0 auto;
  background: #fff;
  border-radius: var(--radius);
  padding: 48px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.content-body h2 {
  font-size: 1.25rem;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--text);
}

.content-body h2:first-child {
  margin-top: 0;
}

.content-body p {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: 12px;
}

.content-body .update-date {
  text-align: right;
  color: var(--text-light);
  font-size: 0.875rem;
  margin-bottom: 32px;
}

/* ============================================
   Page Banner (for sub-pages)
   ============================================ */
.page-banner {
  background: linear-gradient(135deg, #f0faf4 0%, #e8f8ef 30%, #f5f7fa 100%);
  padding: 100px 0 60px;
  text-align: center;
}

.page-banner h1 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.page-banner p {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-content {
    flex-direction: column;
  }

  .about-info {
    width: 100%;
  }
}

@media (max-width: 768px) {
  .header .container {
    height: 56px;
  }

  .nav {
    position: fixed;
    top: 56px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
    display: none;
    border-bottom: 1px solid var(--border);
  }

  .nav.open {
    display: flex;
  }

  .menu-toggle {
    display: flex;
  }

  .hero {
    padding: 100px 0 56px;
  }

  .hero h1 {
    font-size: 2rem;
  }

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

  .hero-stats {
    gap: 32px;
    flex-wrap: wrap;
  }

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

  .flow-steps {
    flex-direction: column;
    align-items: center;
    gap: 32px;
  }

  .flow-step::after {
    content: '↓';
    right: auto;
    top: auto;
    bottom: -28px;
    left: 50%;
    transform: translateX(-50%);
  }

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

  .section {
    padding: 56px 0;
  }

  .section-header h2 {
    font-size: 1.625rem;
  }

  .content-page .content-body {
    padding: 28px 20px;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.625rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats .stat h3 {
    font-size: 1.5rem;
  }

  .service-item {
    flex-direction: column;
    gap: 16px;
  }
}