/* 基本样式 */
:root {
  --primary-color: #FF007F;
  --secondary-color: #8A2BE2;
  --accent-color: #00FFFF;
  --dark-color: #111111;
  --light-color: #F8F8F8;
  --grey-color: #777777;
  --gradient: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  --shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
  --radius: 12px;
  --transition: all 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'ヒラギノ角ゴ Pro W3', 'Hiragino Kaku Gothic Pro', 'メイリオ', 'Meiryo', 'Osaka', sans-serif;
  color: var(--dark-color);
  line-height: 1.6;
  overflow-x: hidden;
  background-color: var(--light-color);
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'ヒラギノ明朝 Pro W3', 'Hiragino Mincho Pro', 'ＭＳ Ｐ明朝', 'MS PMincho', serif;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

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

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

.container {
  width: 100%;
  max-width: 1200px;
  padding: 0 1.5rem;
  margin: 0 auto;
}

section {
  padding: 80px 0;
}

/* 按钮样式 */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 700;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  outline: none;
  font-size: 1rem;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
  color: white;
}

.btn-lg {
  font-size: 1.1rem;
  padding: 14px 32px;
}

/* 导航栏 */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(17, 17, 17, 0.9);
  padding: 15px 0;
  box-shadow: var(--shadow);
}

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

.logo {
  display: flex;
  align-items: center;
  color: white;
  font-size: 1.5rem;
  font-weight: 700;
}

.logo img, .logo svg {
  height: 40px;
  width: auto;
  margin-right: 10px;
}

.nav-menu {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  list-style: none;
}

.nav-item {
  margin-left: 2rem;
}

.nav-link {
  color: white;
  font-weight: 500;
}

.nav-link:hover {
  color: var(--accent-color);
}

.mobile-toggle {
  display: none;
  cursor: pointer;
  background: transparent;
  border: none;
  color: white;
  font-size: 1.5rem;
}

/* 英雄区域 */
.hero {
  position: relative;
  min-height: 100vh;
  color: white;
  display: flex;
  align-items: center;
  background: var(--dark-color);
  padding-top: 80px;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient);
  opacity: 0.7;
  z-index: 0;
}

.hero-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-text {
  max-width: 600px;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

/* 特性部分 */
.section-title {
  text-align: center;
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  font-size: 1.2rem;
  color: var(--grey-color);
  max-width: 800px;
  margin: 0 auto 3rem;
}

.feature-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: white;
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
  text-align: center;
}

.feature-icon {
  width: 70px;
  height: 70px;
  margin-bottom: 1.5rem;
  stroke: var(--primary-color);
}

.feature-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

/* 工作流程 */
.steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-around;
  gap: 2rem;
}

.step {
  flex: 1;
  min-width: 250px;
  max-width: 350px;
  text-align: center;
  padding: 2rem;
}

.step-number {
  width: 60px;
  height: 60px;
  background: var(--gradient);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.8rem;
  font-weight: bold;
  margin: 0 auto 1.5rem;
}

/* FAQ部分 */
.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  margin-bottom: 1.5rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.faq-question {
  padding: 1.5rem;
  background-color: white;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 700;
  font-size: 1.1rem;
  border-left: 5px solid var(--primary-color);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
}

.faq-answer {
  padding: 1.5rem;
  background-color: var(--light-color);
  display: none;
}

.faq-answer.active {
  display: block;
}

/* CTA部分 */
.cta {
  position: relative;
  color: white;
  background: var(--dark-color);
}

.cta::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient);
  opacity: 0.9;
  z-index: 0;
}

.cta-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-title {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.cta-text {
  font-size: 1.2rem;
  margin-bottom: 2rem;
}

/* 页脚 */
.footer {
  background-color: var(--dark-color);
  color: white;
  padding: 60px 0 20px;
}

.footer-container {
  display: flex;
  flex-wrap: wrap;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-section {
  flex: 1;
  min-width: 250px;
}

.footer-title {
  font-size: 1.3rem;
  margin-bottom: 1.5rem;
  color: white;
}

.footer-brand {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.footer-logo {
  height: 40px;
  margin-right: 10px;
}

.footer-links li {
  margin-bottom: 0.7rem;
  list-style: none;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
}

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

.footer-copyright {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: rgba(255, 255, 255, 0.7);
}

/* 响应式设计 */
@media (max-width: 992px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
  }
  
  .hero-text {
    margin-bottom: 3rem;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .feature-cards, .steps {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-title {
    font-size: 2.5rem;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--dark-color);
    transition: var(--transition);
    padding: 2rem;
    z-index: 100;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-list {
    flex-direction: column;
    align-items: center;
  }
  
  .nav-item {
    margin: 1.5rem 0;
  }
  
  .footer-container {
    flex-direction: column;
  }
}