*, *::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: #FAF7F2;
  color: #3D3229;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

.section {
  padding: 80px 0;
}

.section:nth-child(even) {
  background: #F5F0E8;
}

/* ===== 导航 ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 247, 242, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid #E8E2D8;
  transition: box-shadow 0.3s ease;
}

.site-header.scrolled {
  box-shadow: 0 2px 20px rgba(61, 50, 41, 0.06);
}

.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: 10px;
  font-weight: 700;
  font-size: 1.2rem;
  text-decoration: none;
  color: #3D3229;
  letter-spacing: -0.02em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  background: #C67B5C;
  color: #fff;
  font-weight: 800;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: #5C5348;
  transition: color 0.2s ease;
  position: relative;
}

.main-nav a:hover {
  color: #C67B5C;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #C67B5C;
  border-radius: 1px;
  transition: width 0.25s ease;
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-cta {
  padding: 9px 22px;
  border-radius: 24px;
  color: #fff !important;
  font-weight: 600;
  background: #C67B5C;
  transition: background 0.25s ease, transform 0.2s ease !important;
}

.nav-cta:hover {
  background: #B56A4D;
  transform: translateY(-1px);
}

.nav-cta::after {
  display: none !important;
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 6px;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: #3D3229;
  border-radius: 2px;
  transition: 0.3s ease;
}

/* ===== Hero ===== */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  padding-top: 68px;
  background: linear-gradient(135deg, #FAF7F2 0%, #F5F0E8 30%, #FAF7F2 60%, #F8F3EC 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 700px;
  height: 700px;
  background: radial-gradient(circle, rgba(198, 123, 92, 0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(92, 107, 75, 0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 720px;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 5px 16px;
  border-radius: 20px;
  margin-bottom: 18px;
  background: rgba(198, 123, 92, 0.1);
  color: #C67B5C;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 20px;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: #3D3229;
}

.hero h1 .highlight {
  color: #C67B5C;
  position: relative;
}

.hero h1 .highlight::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0;
  width: 100%;
  height: 8px;
  background: rgba(198, 123, 92, 0.18);
  border-radius: 4px;
  z-index: -1;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.7;
  max-width: 560px;
  margin-bottom: 36px;
  line-height: 1.7;
  color: #5C5348;
}

.hero-buttons {
  display: flex;
  gap: 16px;
}

.hero-image {
  border-radius: 16px;
  overflow: hidden;
  position: relative;
  z-index: 1;
  box-shadow: 0 20px 60px rgba(61, 50, 41, 0.08);
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 30px;
  border-radius: 26px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.25s ease;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
}

.btn-primary {
  background: #C67B5C;
  color: #fff;
  box-shadow: 0 4px 16px rgba(198, 123, 92, 0.3);
}

.btn-primary:hover {
  background: #B56A4D;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(198, 123, 92, 0.4);
}

.btn-outline {
  background: transparent;
  border: 1.5px solid #C67B5C;
  color: #C67B5C;
}

.btn-outline:hover {
  background: rgba(198, 123, 92, 0.06);
  transform: translateY(-2px);
}

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: #C67B5C;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #3D3229;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  opacity: 0.7;
  margin-bottom: 44px;
  color: #5C5348;
  line-height: 1.7;
  font-size: 1.05rem;
}

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

.category-card {
  border-radius: 16px;
  padding: 32px 28px;
  border: 1px solid #E8E2D8;
  transition: all 0.3s ease;
  background: #fff;
  position: relative;
  overflow: hidden;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, #C67B5C, #E8A87C);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}

.category-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(61, 50, 41, 0.08);
  border-color: #D8CFC4;
}

.category-card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 50px;
  height: 50px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  font-size: 1.3rem;
  background: rgba(198, 123, 92, 0.08);
  color: #C67B5C;
}

.category-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: #3D3229;
  letter-spacing: -0.01em;
}

.category-card p {
  font-size: 0.9rem;
  color: #7A6E63;
  line-height: 1.6;
  margin-bottom: 14px;
}

.card-link {
  font-weight: 600;
  font-size: 0.85rem;
  text-decoration: none;
  color: #C67B5C;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.25s ease;
}

.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: 16px;
  overflow: hidden;
  position: relative;
}

.feature-image img {
  width: 100%;
  height: auto;
  display: block;
}

.feature-image::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 16px;
  box-shadow: inset 0 0 0 1px rgba(61, 50, 41, 0.04);
  pointer-events: none;
}

.feature-text h3 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: #3D3229;
  letter-spacing: -0.02em;
}

.feature-text p {
  color: #5C5348;
  line-height: 1.7;
  margin-bottom: 20px;
  opacity: 0.8;
}

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

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: #3D3229;
  font-size: 0.95rem;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700;
  color: #C67B5C;
  font-size: 1rem;
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(198, 123, 92, 0.1);
  border-radius: 50%;
  font-size: 0.7rem;
}

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

.stat-item {
  padding: 28px 20px;
  border-radius: 16px;
  border: 1px solid #E8E2D8;
  background: #fff;
  transition: all 0.3s ease;
}

.stat-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 24px rgba(61, 50, 41, 0.06);
  border-color: #D8CFC4;
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: #C67B5C;
  letter-spacing: -0.03em;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.6;
  margin-top: 8px;
  color: #5C5348;
  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: 16px;
  overflow: hidden;
  border: 1px solid #E8E2D8;
  transition: all 0.3s ease;
  background: #fff;
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(61, 50, 41, 0.08);
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.content-wall-body {
  padding: 22px 20px;
}

.content-wall-body h4 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 6px;
  color: #3D3229;
  letter-spacing: -0.01em;
}

.content-wall-body p {
  font-size: 0.88rem;
  color: #7A6E63;
  line-height: 1.6;
}

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

.faq-item {
  border: 1px solid #E8E2D8;
  border-radius: 12px;
  margin-bottom: 10px;
  overflow: hidden;
  cursor: pointer;
  background: #fff;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: #D8CFC4;
}

.faq-item .faq-question {
  padding: 18px 22px;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: #3D3229;
  font-size: 0.95rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.3rem;
  font-weight: 400;
  color: #C67B5C;
  transition: transform 0.3s ease;
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
}

.faq-item .faq-answer {
  padding: 0 22px 18px;
  display: none;
  opacity: 0.7;
  color: #5C5348;
  line-height: 1.7;
  font-size: 0.9rem;
}

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

.faq-item.open {
  border-color: #C67B5C;
  box-shadow: 0 4px 16px rgba(198, 123, 92, 0.08);
}

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 60px 24px;
  text-align: center;
  border-radius: 18px;
  color: #fff;
  background: linear-gradient(135deg, #C67B5C 0%, #D4846A 30%, #B56A4D 70%, #A05D42 100%);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -15%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.04) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.cta-banner h2 {
  color: #fff;
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.cta-banner p {
  color: rgba(255,255,255,0.85);
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  font-size: 1.05rem;
}

.cta-banner .btn-primary {
  background: #fff;
  color: #C67B5C;
  box-shadow: 0 4px 20px rgba(0,0,0,0.12);
  position: relative;
  z-index: 1;
}

.cta-banner .btn-primary:hover {
  background: #FDFCFA;
  box-shadow: 0 6px 28px rgba(0,0,0,0.16);
  transform: translateY(-2px);
}

/* ===== 页脚 ===== */
.site-footer {
  padding: 56px 0 28px;
  background: #F5F0E8;
  color: #3D3229;
  border-top: 1px solid #E8E2D8;
}

.site-footer .container {
}

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

.footer-brand .logo {
  margin-bottom: 12px;
}

.footer-brand p {
  color: #7A6E63;
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-col h4 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #3D3229;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: #7A6E63;
  text-decoration: none;
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: #C67B5C;
}

.footer-bottom {
  border-top: 1px solid #E8E2D8;
  margin-top: 40px;
  padding-top: 20px;
  text-align: center;
  font-size: 0.85rem;
  color: #7A6E63;
}

/* ===== 工具类 ===== */
.text-accent {
  color: #C67B5C;
}

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

.seo-description {
  max-width: 600px;
  margin: 0 auto 48px;
  opacity: 0.7;
  color: #5C5348;
  line-height: 1.7;
}

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

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

/* ===== 响应式 ===== */
@media (max-width: 768px) {
  .feature-block {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .stats-bar {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

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

  .section-title {
    font-size: 1.7rem;
  }

  .main-nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 68px;
    left: 0;
    width: 100%;
    background: #FAF7F2;
    padding: 24px;
    border-bottom: 1px solid #E8E2D8;
    box-shadow: 0 8px 24px rgba(61, 50, 41, 0.06);
    gap: 16px;
  }

  .main-nav.open a {
    font-size: 1rem;
    padding: 6px 0;
  }

  .nav-cta {
    display: inline-block;
    text-align: center;
    margin-top: 4px;
  }

  .cta-banner h2 {
    font-size: 1.5rem;
  }

  .hero {
    min-height: auto;
    padding-top: 100px;
    padding-bottom: 60px;
  }
}

@media (max-width: 480px) {
  .cards-grid,
  .content-wall,
  .stats-bar {
    grid-template-columns: 1fr;
    gap: 16px;
  }

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

  .hero-buttons {
    flex-direction: column;
    gap: 12px;
  }

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

  .section {
    padding: 50px 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

  .feature-block {
    gap: 24px;
  }

  .stat-number {
    font-size: 1.8rem;
  }

  .header-inner {
    padding: 0 16px;
  }

  .container {
    padding: 0 16px;
  }

  .cta-banner {
    padding: 40px 18px;
    border-radius: 14px;
  }
}