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

body {
  font-family: system-ui, 'PingFang SC', 'Microsoft YaHei', sans-serif;
  overflow-x: hidden;
  background: #FFFBF5; /* 暖白背景 */
  color: #2C3E4E; /* 深灰蓝文字 */
  line-height: 1.6;
}

/* 链接基础色 */
a {
  color: #FF6B6B;
  transition: color 0.2s ease;
}
a:hover {
  color: #E05555;
}

/* 核心布局 */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: #F4F7F6; /* 极浅灰绿 */
}

/* 导航 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 251, 245, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid #E8E4D9;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: #2C3E4E;
  letter-spacing: -0.3px;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: linear-gradient(135deg, #FFD93D, #FF6B6B);
  color: white;
  font-weight: 800;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #5A6B78;
  transition: 0.2s;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover {
  color: #FF6B6B;
  border-bottom-color: #FF6B6B;
}

.nav-cta {
  padding: 8px 20px;
  border-radius: 8px;
  color: #fff !important;
  font-weight: 600;
  background: linear-gradient(135deg, #FF6B6B, #FF8E53);
  border: none;
  box-shadow: 0 2px 12px rgba(255, 107, 107, 0.25);
}
.nav-cta:hover {
  background: linear-gradient(135deg, #E05555, #E87A40);
  color: #fff !important;
  border-bottom-color: transparent !important;
}

.menu-toggle {
  display: none;
}

/* Hero */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  background: linear-gradient(160deg, #FFFBF5 0%, #FFEFE0 100%);
}

.hero-content {
  max-width: 720px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  background: rgba(255, 107, 107, 0.1);
  color: #FF6B6B;
  letter-spacing: 1px;
}

.hero h1 {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 800;
  color: #1E2A36;
  letter-spacing: -0.5px;
  position: relative;
}

.hero h1::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 60px;
  height: 3px;
  background: #FFD93D;
  border-radius: 3px;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 560px;
  margin-bottom: 32px;
  color: #5A6B78;
}

.hero-buttons {
  display: flex;
  gap: 14px;
}

.hero-image {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(44, 62, 78, 0.08);
  transition: transform 0.3s;
}
.hero-image:hover {
  transform: translateY(-4px);
}
.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* 按钮 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s ease;
  letter-spacing: 0.3px;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(135deg, #008080, #20B2AA);
  box-shadow: 0 4px 14px rgba(0, 128, 128, 0.25);
}
.btn-primary:hover {
  background: linear-gradient(135deg, #006666, #1A9A8A);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #2C3E4E;
  color: #2C3E4E;
}
.btn-outline:hover {
  background: rgba(44, 62, 78, 0.04);
}

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  margin-bottom: 12px;
  color: #FF6B6B;
  text-transform: uppercase;
}

.section-title {
  font-size: 2rem;
  margin-bottom: 14px;
  font-weight: 700;
  color: #1E2A36;
}

.section-desc {
  max-width: 600px;
  opacity: 0.8;
  margin-bottom: 40px;
  color: #5A6B78;
}

/* 卡片网格 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

.category-card {
  border-radius: 12px;
  padding: 28px;
  background: #FFFFFF;
  border: 1px solid #E8E4D9;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(44, 62, 78, 0.03);
}

.category-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(44, 62, 78, 0.1);
  border-color: #FFD93D;
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  font-size: 1.3rem;
  background: linear-gradient(135deg, #FFD93D, #FFB347);
  color: white;
  box-shadow: 0 4px 10px rgba(255, 179, 71, 0.2);
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #FF6B6B;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.2s;
}
.card-link:hover {
  gap: 8px;
}

/* 特性块 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.feature-image {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 12px 28px rgba(44, 62, 78, 0.08);
}
.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-text {
  /* 样式在内部元素中体现 */
}

.feature-list {
  list-style: none;
}

.feature-list li {
  padding: 6px 0;
  display: flex;
  align-items: center;
  gap: 8px;
  color: #2C3E4E;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #008080;
  background: rgba(0, 128, 128, 0.1);
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  flex-shrink: 0;
}

/* 数据条 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item {
  padding: 24px;
  border-radius: 12px;
  border: 1px solid #E8E4D9;
  background: white;
  transition: all 0.2s;
}
.stat-item:hover {
  background: #FFFBF5;
  box-shadow: 0 8px 20px rgba(44, 62, 78, 0.06);
}

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: #FF6B6B;
  background: linear-gradient(135deg, #FF6B6B, #FF8E53);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-top: 6px;
  color: #5A6B78;
  font-weight: 500;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.content-wall-item {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid #E8E4D9;
  background: white;
  transition: all 0.2s ease;
  box-shadow: 0 2px 8px rgba(44, 62, 78, 0.03);
}

.content-wall-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 24px rgba(44, 62, 78, 0.1);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid #E8E4D9;
}

.content-wall-body {
  padding: 20px;
}

.content-wall-body h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: #1E2A36;
}

.content-wall-body p {
  font-size: 0.9rem;
  color: #5A6B78;
  opacity: 0.9;
}

/* FAQ */
.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid #E8E4D9;
  background: white;
  border-radius: 10px;
  margin-bottom: 8px;
  overflow: hidden;
  cursor: pointer;
  transition: box-shadow 0.2s;
}
.faq-item:hover {
  box-shadow: 0 4px 12px rgba(44, 62, 78, 0.06);
}

.faq-item .faq-question {
  padding: 16px 20px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #1E2A36;
}

.faq-item .faq-answer {
  padding: 0 20px 16px;
  display: none;
  opacity: 0.8;
  color: #5A6B78;
  font-size: 0.95rem;
}

.faq-item.open .faq-answer {
  display: block;
}

/* CTA横幅 */
.cta-banner {
  padding: 56px 24px;
  text-align: center;
  border-radius: 12px;
  color: #fff;
  background: linear-gradient(135deg, #FF6B6B, #FF8E53);
  box-shadow: 0 12px 28px rgba(255, 107, 107, 0.3);
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  margin-bottom: 16px;
}

.cta-banner p {
  opacity: 0.9;
  margin-bottom: 24px;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #FF6B6B;
  font-weight: 700;
  box-shadow: none;
}
.cta-banner .btn-primary:hover {
  background: #F0F0F0;
  color: #E05555;
}

/* 页脚 */
.site-footer {
  padding: 56px 0 28px;
  background: #FFFBF5;
  color: #5A6B78;
  border-top: 1px solid #E8E4D9;
}

.site-footer .container {
  /* 继承上级 */
}

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

.footer-brand p {
  font-size: 0.9rem;
  margin-top: 8px;
  opacity: 0.8;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #1E2A36;
}

.footer-col a {
  display: block;
  font-size: 0.85rem;
  color: #5A6B78;
  text-decoration: none;
  margin-bottom: 8px;
  transition: color 0.2s;
}
.footer-col a:hover {
  color: #FF6B6B;
}

.footer-bottom {
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #5A6B78;
}

/* 工具类 */
.text-accent {
  color: #FF6B6B;
  font-weight: 600;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.8;
  text-align: center;
}

.mt-0 {
  margin-top: 0 !important;
}

.mb-0 {
  margin-bottom: 0 !important;
}

/* 响应式 */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
  }
  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .main-nav {
    display: none;
  }
  .menu-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid #E8E4D9;
    border-radius: 8px;
    cursor: pointer;
    color: #2C3E4E;
  }
  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: #FFFBF5;
    padding: 20px;
    border-bottom: 1px solid #E8E4D9;
    box-shadow: 0 8px 16px rgba(44, 62, 78, 0.06);
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-buttons {
    flex-direction: column;
  }
  .hero h1 {
    font-size: 2.2rem;
  }
}