*, *::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: #fefaf5;
  color: #2d2a24;
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

.section { padding: 80px 0; }

.section:nth-child(even) { background: #f8f4ef; }

/* 导航 —— 柔光亚麻质感 */
.site-header {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  background: rgba(254, 250, 245, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid #e5ddd4;
}

.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; max-width: 1200px; margin: 0 auto; padding: 0 28px;
}

.logo {
  display: flex; align-items: center; gap: 12px;
  font-weight: 700; font-size: 1.25rem;
  text-decoration: none; color: #2d2a24;
  letter-spacing: 0.5px;
}

.logo-icon {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  background: #d9c5b2;
  color: #fefaf5;
  box-shadow: 0 2px 8px rgba(45, 42, 36, 0.08);
}

.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: #5a5247; transition: 0.25s;
  letter-spacing: 0.3px;
}

.main-nav a:hover { color: #b28b6c; }

.nav-cta {
  padding: 10px 24px; border-radius: 40px;
  background: #b28b6c; color: #fefaf5 !important;
  font-weight: 600; letter-spacing: 0.4px;
  border: none; transition: 0.3s;
}

.nav-cta:hover { background: #9d7a5e; transform: translateY(-1px); }

.menu-toggle { display: none; }

/* Hero —— 柔和陶土调 */
.hero {
  min-height: 72vh;
  display: flex; align-items: center;
  background: linear-gradient(135deg, #fefaf5 0%, #f5ede4 100%);
  position: relative;
}

.hero::after {
  content: '';
  position: absolute; right: 0; top: 0; width: 40%; height: 100%;
  background: radial-gradient(circle at 80% 30%, #e8d5c1 0%, transparent 70%);
  opacity: 0.5; z-index: 0;
}

.hero-content { max-width: 700px; position: relative; z-index: 1; }

.hero-eyebrow {
  display: inline-block;
  font-size: 0.8rem; font-weight: 600; letter-spacing: 3px;
  padding: 6px 18px; border-radius: 40px;
  background: #e8d5c1; color: #5a5247;
  margin-bottom: 20px; text-transform: uppercase;
}

.hero h1 {
  font-size: 3.2rem; line-height: 1.15; margin-bottom: 20px;
  font-weight: 750; color: #2d2a24;
  letter-spacing: -0.5px;
}

.hero p {
  font-size: 1.1rem; opacity: 0.65;
  max-width: 540px; margin-bottom: 36px;
  color: #5a5247; line-height: 1.6;
}

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

.hero-image {
  border-radius: 20px; overflow: hidden;
  box-shadow: 0 12px 40px rgba(45, 42, 36, 0.08);
}

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

/* 按钮 */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 14px 32px; border-radius: 40px;
  font-weight: 600; cursor: pointer; border: none;
  text-decoration: none; transition: 0.3s;
  font-size: 0.95rem; letter-spacing: 0.3px;
}

.btn-primary {
  background: #b28b6c; color: #fefaf5;
  box-shadow: 0 4px 12px rgba(178, 139, 108, 0.3);
}

.btn-primary:hover { background: #9d7a5e; transform: translateY(-2px); box-shadow: 0 6px 20px rgba(178, 139, 108, 0.35); }

.btn-outline {
  background: transparent; border: 1.5px solid #d9c5b2;
  color: #5a5247;
}

.btn-outline:hover { background: #f5ede4; border-color: #b28b6c; }

/* 标签/标题 */
.section-label {
  display: inline-block;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 3px;
  color: #b28b6c; text-transform: uppercase;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem; font-weight: 700; margin-bottom: 16px;
  color: #2d2a24; letter-spacing: -0.3px;
}

.section-desc {
  max-width: 600px; opacity: 0.65;
  margin-bottom: 44px; line-height: 1.7;
  color: #5a5247;
}

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

.category-card {
  border-radius: 16px; padding: 32px 28px;
  background: #fefaf5; border: 1px solid #ede5db;
  transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  position: relative;
}

.category-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(45, 42, 36, 0.08);
  border-color: #d9c5b2;
}

.card-icon {
  width: 52px; height: 52px; border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 20px; font-size: 1.4rem;
  background: #f5ede4; color: #b28b6c;
}

.card-link {
  font-weight: 600; font-size: 0.85rem; text-decoration: none;
  color: #b28b6c; display: inline-flex; align-items: center; gap: 6px;
  transition: 0.2s;
}

.card-link:hover { gap: 12px; color: #9d7a5e; }

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

.feature-image {
  border-radius: 18px; overflow: hidden;
  box-shadow: 0 8px 28px rgba(45, 42, 36, 0.06);
}

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

.feature-text { }

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

.feature-list li {
  padding: 8px 0; display: flex; align-items: center; gap: 10px;
  color: #5a5247; font-weight: 450;
}

.feature-list li::before {
  content: '✓';
  font-weight: 700; color: #b28b6c;
  background: #f5ede4; width: 24px; height: 24px;
  border-radius: 50%; display: flex; align-items: center; justify-content: center;
  font-size: 0.8rem;
}

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

.stat-item {
  padding: 28px 16px; border-radius: 16px;
  background: #fefaf5; border: 1px solid #ede5db;
  transition: 0.3s;
}

.stat-item:hover { border-color: #d9c5b2; box-shadow: 0 4px 16px rgba(45, 42, 36, 0.04); }

.stat-number {
  font-size: 2.6rem; font-weight: 800;
  color: #b28b6c; letter-spacing: -1px;
}

.stat-label {
  font-size: 0.9rem; opacity: 0.6; margin-top: 6px;
  color: #5a5247; font-weight: 450;
}

/* 内容墙 */
.content-wall {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 28px;
}

.content-wall-item {
  border-radius: 16px; overflow: hidden;
  background: #fefaf5; border: 1px solid #ede5db;
  transition: 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.content-wall-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 32px rgba(45, 42, 36, 0.08);
  border-color: #d9c5b2;
}

.content-wall-item img {
  width: 100%; height: 210px; object-fit: cover;
}

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

.content-wall-body h3 { font-size: 1.1rem; margin-bottom: 8px; color: #2d2a24; }

.content-wall-body p { font-size: 0.9rem; opacity: 0.65; color: #5a5247; }

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

.faq-item {
  border: 1px solid #ede5db; border-radius: 14px;
  margin-bottom: 10px; overflow: hidden;
  cursor: pointer; background: #fefaf5;
  transition: 0.25s;
}

.faq-item:hover { border-color: #d9c5b2; }

.faq-item .faq-question {
  padding: 18px 24px; font-weight: 600;
  display: flex; justify-content: space-between;
  color: #2d2a24; font-size: 1rem;
}

.faq-item .faq-question::after {
  content: '+'; font-size: 1.3rem; font-weight: 300;
  color: #b28b6c; transition: 0.3s;
}

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

.faq-item .faq-answer {
  padding: 0 24px 18px; display: none;
  opacity: 0.7; color: #5a5247; line-height: 1.7;
}

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

/* CTA横幅 */
.cta-banner {
  padding: 64px 28px; text-align: center;
  border-radius: 20px;
  background: linear-gradient(135deg, #b28b6c 0%, #9d7a5e 100%);
  color: #fefaf5;
}

.cta-banner h2 { color: #fefaf5; font-size: 2rem; margin-bottom: 16px; }

.cta-banner .btn-primary {
  background: #fefaf5; color: #b28b6c;
  box-shadow: 0 4px 16px rgba(254, 250, 245, 0.3);
}

.cta-banner .btn-primary:hover { background: #f5ede4; transform: translateY(-2px); }

/* 页脚 */
.site-footer {
  padding: 64px 0 32px;
  background: #2d2a24; color: #e5ddd4;
}

.site-footer .container { }

.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
}

.footer-brand { }

.footer-brand .logo { color: #fefaf5; }

.footer-brand p { margin-top: 16px; opacity: 0.6; font-size: 0.9rem; line-height: 1.6; }

.footer-col { }

.footer-col h4 { font-size: 0.9rem; font-weight: 600; margin-bottom: 18px; color: #fefaf5; letter-spacing: 0.5px; }

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

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

.footer-col a {
  color: #c4b8aa; text-decoration: none; font-size: 0.9rem;
  transition: 0.2s;
}

.footer-col a:hover { color: #d9c5b2; }

.footer-bottom {
  border-top: 1px solid rgba(229, 221, 212, 0.15);
  margin-top: 48px; padding-top: 24px;
  text-align: center; font-size: 0.85rem; opacity: 0.6;
}

/* 工具类 */
.text-accent { color: #b28b6c; }

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

.seo-description { max-width: 600px; margin: 0 auto 48px; opacity: 0.65; color: #5a5247; 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: 40px; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
  .main-nav { display: none; }
  .menu-toggle { display: flex; align-items: center; justify-content: center; width: 40px; height: 40px; border-radius: 50%; background: #f5ede4; border: none; cursor: pointer; font-size: 1.2rem; color: #5a5247; }
  .main-nav.open { display: flex; flex-direction: column; position: absolute; top: 72px; left: 0; width: 100%; background: #fefaf5; padding: 24px 28px; border-bottom: 1px solid #ede5db; 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; }
  .stat-number { font-size: 2rem; }
}