*, *::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: #faf3e8;
  color: #3d2c1e;
}

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

.section { padding: 80px 0; }

.section:nth-child(even) { background: #f5ede2; }

/* 导航 — 奶油白+浅褐 */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(250, 243, 232, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 2px solid #e8d5c4;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  text-decoration: none;
  color: #6b4c3b;
  letter-spacing: 1px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: #d9b382;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  box-shadow: 0 2px 8px rgba(217, 179, 130, 0.4);
}

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

.main-nav a {
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  color: #6b4c3b;
  letter-spacing: 0.5px;
  padding: 4px 0;
  border-bottom: 2px solid transparent;
  transition: 0.2s;
}

.main-nav a:hover { border-bottom-color: #d9b382; }

.nav-cta {
  padding: 10px 24px;
  border-radius: 30px;
  color: #fff !important;
  background: #c8956c;
  font-weight: 700;
  border-bottom: none !important;
  box-shadow: 0 4px 12px rgba(200, 149, 108, 0.3);
}

.nav-cta:hover { background: #b07d54; transform: translateY(-1px); }

.menu-toggle { display: none; }

/* 首页Hero — 暖调艺术感 */
.hero {
  min-height: 75vh;
  display: flex;
  align-items: center;
  background: linear-gradient(135deg, #faf3e8 0%, #f0e1d0 100%);
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40px;
  right: -80px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(217, 179, 130, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content { max-width: 680px; position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  padding: 6px 18px;
  border-radius: 30px;
  background: #d9b382;
  color: #fff;
  margin-bottom: 20px;
  text-transform: uppercase;
}

.hero h1 {
  font-size: 3.2rem;
  line-height: 1.15;
  margin-bottom: 18px;
  color: #3d2c1e;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 1.1rem;
  opacity: 0.75;
  max-width: 520px;
  margin-bottom: 36px;
  color: #5a4232;
  line-height: 1.6;
}

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

.hero-image {
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(61, 44, 30, 0.08);
  border: 2px solid #e8d5c4;
}

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

/* 按钮 — 陶土色系 */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 40px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: 0.25s;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
}

.btn-primary {
  color: #fff;
  background: #c8956c;
  box-shadow: 0 4px 16px rgba(200, 149, 108, 0.35);
}

.btn-primary:hover { background: #b07d54; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(200, 149, 108, 0.45); }

.btn-outline {
  background: transparent;
  border: 2px solid #c8956c;
  color: #6b4c3b;
}

.btn-outline:hover { background: #c8956c; color: #fff; }

/* 标签/标题 — 优雅衬线感 */
.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 3px;
  margin-bottom: 14px;
  color: #b07d54;
  text-transform: uppercase;
}

.section-title {
  font-size: 2.2rem;
  margin-bottom: 16px;
  color: #3d2c1e;
  font-weight: 800;
  line-height: 1.2;
}

.section-desc {
  max-width: 600px;
  opacity: 0.75;
  margin-bottom: 44px;
  color: #5a4232;
  font-size: 1.05rem;
}

/* 卡片网格 — 柔和阴影 */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 28px;
}

.category-card {
  border-radius: 20px;
  padding: 32px 28px;
  background: #fffbf5;
  border: 1px solid #e8d5c4;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(61, 44, 30, 0.04);
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(61, 44, 30, 0.08);
  border-color: #d9b382;
}

.card-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: #f0e1d0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 1.5rem;
  color: #6b4c3b;
}

.card-link {
  font-weight: 700;
  font-size: 0.85rem;
  text-decoration: none;
  color: #c8956c;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.card-link:hover { color: #b07d54; }

/* 特性块 — 左右分栏 */
.feature-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.feature-image {
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(61, 44, 30, 0.06);
  border: 2px solid #e8d5c4;
}

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

.feature-text h3 { font-size: 1.6rem; margin-bottom: 16px; color: #3d2c1e; }

.feature-list { list-style: none; margin-top: 20px; }

.feature-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #5a4232;
  font-weight: 500;
}

.feature-list li::before {
  content: '✦';
  font-weight: 700;
  color: #d9b382;
  font-size: 1.1rem;
}

/* 数据条 — 暖陶质感 */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
  text-align: center;
}

.stat-item {
  padding: 32px 20px;
  border-radius: 20px;
  background: #fffbf5;
  border: 1px solid #e8d5c4;
  box-shadow: 0 2px 8px rgba(61, 44, 30, 0.03);
}

.stat-number {
  font-size: 2.6rem;
  font-weight: 800;
  color: #6b4c3b;
  line-height: 1;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-top: 8px;
  color: #5a4232;
  font-weight: 500;
}

/* 内容墙 — 卡片式 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 20px;
  overflow: hidden;
  background: #fffbf5;
  border: 1px solid #e8d5c4;
  transition: 0.3s;
  box-shadow: 0 2px 8px rgba(61, 44, 30, 0.03);
}

.content-wall-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(61, 44, 30, 0.08);
  border-color: #d9b382;
}

.content-wall-item img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 2px solid #f0e1d0;
}

.content-wall-body { padding: 22px 24px; }

.content-wall-body h4 { font-size: 1.1rem; margin-bottom: 8px; color: #3d2c1e; }

.content-wall-body p { font-size: 0.9rem; opacity: 0.7; color: #5a4232; }

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

.faq-item {
  border: 1px solid #e8d5c4;
  border-radius: 16px;
  margin-bottom: 12px;
  overflow: hidden;
  cursor: pointer;
  background: #fffbf5;
  transition: 0.2s;
}

.faq-item:hover { border-color: #d9b382; }

.faq-item .faq-question {
  padding: 18px 24px;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  color: #3d2c1e;
  font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #c8956c;
  transition: 0.2s;
}

.faq-item.open .faq-question::after { content: '−'; }

.faq-item .faq-answer {
  padding: 0 24px 20px;
  display: none;
  opacity: 0.8;
  color: #5a4232;
  line-height: 1.6;
}

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

/* CTA横幅 — 渐变陶土 */
.cta-banner {
  padding: 64px 32px;
  text-align: center;
  border-radius: 24px;
  background: linear-gradient(135deg, #c8956c 0%, #b07d54 100%);
  color: #fff;
  box-shadow: 0 12px 40px rgba(200, 149, 108, 0.3);
}

.cta-banner h2 { color: #fff; font-size: 2rem; margin-bottom: 12px; }

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

.cta-banner .btn-primary {
  background: #fff;
  color: #6b4c3b;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.cta-banner .btn-primary:hover { background: #f0e1d0; }

/* 页脚 — 浅褐延续 */
.site-footer {
  padding: 60px 0 32px;
  background: #ede3d6;
  color: #5a4232;
}

.site-footer .container { }

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 44px;
}

.footer-brand h3 { font-size: 1.3rem; color: #3d2c1e; margin-bottom: 12px; }

.footer-brand p { opacity: 0.7; font-size: 0.9rem; line-height: 1.6; }

.footer-col h4 { font-size: 0.95rem; color: #3d2c1e; margin-bottom: 16px; font-weight: 700; }

.footer-col ul { list-style: none; }

.footer-col li { margin-bottom: 8px; }

.footer-col a { text-decoration: none; color: #5a4232; opacity: 0.7; font-size: 0.9rem; transition: 0.2s; }

.footer-col a:hover { opacity: 1; color: #c8956c; }

.footer-bottom {
  border-top: 2px solid #d9b382;
  margin-top: 48px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.6;
}

/* 工具类 */
.text-accent { color: #c8956c; }

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

.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.7; color: #5a4232; }

.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); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; width: 100%; background: #faf3e8; padding: 24px; border-bottom: 2px solid #e8d5c4; gap: 16px; }
  .hero h1 { font-size: 2.2rem; }
  .hero { min-height: 60vh; }
}

@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: 1.8rem; }
  .section-title { font-size: 1.6rem; }
}