/* 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:#fefcf8; 
  color:#3a2f2a; 
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

/* 滚动条 */
::-webkit-scrollbar { width:6px; }
::-webkit-scrollbar-track { background:#f7f3ed; }
::-webkit-scrollbar-thumb { background:#d4b8a8; border-radius:3px; }
::-webkit-scrollbar-thumb:hover { background:#c49e8a; }

/* 核心布局 — 必须居中 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#f7f3ed; }

/* 装饰性背景纹理 - 偶数section */
.section:nth-child(even)::before {
  content:'';
  position:absolute;
  top:0;left:0;right:0;bottom:0;
  background: radial-gradient(ellipse at 20% 80%, rgba(224,123,90,0.03) 0%, transparent 50%),
              radial-gradient(ellipse at 80% 20%, rgba(107,143,113,0.03) 0%, transparent 50%);
  pointer-events:none;
}

/* 导航 — 固定顶部 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background:rgba(254,252,248,0.92); 
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid #e8e0d8; 
  transition:box-shadow 0.3s ease;
}
.site-header.scrolled { box-shadow:0 2px 24px rgba(58,47,42,0.06); }
.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:1.25rem; text-decoration:none; color:#3a2f2a; 
  letter-spacing:-0.3px;
  transition:opacity 0.2s;
}
.logo:hover { opacity:0.8; }
.logo-icon { 
  width:38px; height:38px; border-radius:10px; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.1rem; font-weight:800;
  background:linear-gradient(135deg, #e07b5a 0%, #d4a574 100%);
  color:#fff;
  box-shadow:0 2px 10px rgba(224,123,90,0.25);
}
.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:#5c4f48; transition:0.25s ease; 
  position:relative;
}
.main-nav a::after {
  content:'';
  position:absolute;
  bottom:-4px; left:0; width:0; height:2px;
  background:#e07b5a; border-radius:1px;
  transition:width 0.3s ease;
}
.main-nav a:hover { color:#3a2f2a; }
.main-nav a:hover::after { width:100%; }
.nav-cta { 
  padding:10px 22px; border-radius:24px; 
  color:#fff!important; font-weight:600; 
  background:linear-gradient(135deg, #e07b5a 0%, #d4815e 100%);
  box-shadow:0 3px 14px rgba(224,123,90,0.28);
  transition:all 0.3s ease!important;
  letter-spacing:0.2px;
}
.nav-cta:hover { 
  transform:translateY(-2px); 
  box-shadow:0 6px 22px rgba(224,123,90,0.35);
}
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; cursor:pointer; width:36px; height:36px; align-items:center; justify-content:center; border-radius:8px; background:transparent; border:1.5px solid #e8e0d8; flex-direction:column; gap:5px; padding:8px; }
.menu-toggle span { display:block; width:20px; height:2px; background:#3a2f2a; border-radius:1px; transition:0.3s ease; }
.menu-toggle.active span:nth-child(1) { transform:rotate(45deg) translate(5px,5px); }
.menu-toggle.active span:nth-child(2) { opacity:0; }
.menu-toggle.active span:nth-child(3) { transform:rotate(-45deg) translate(5px,-5px); }

/* 首页Hero */
.hero { 
  min-height:70vh; display:flex; align-items:center; 
  padding-top:68px;
  position:relative;
  background:linear-gradient(180deg, #fefcf8 0%, #faf6f0 40%, #f7f1e8 100%);
}
.hero::before {
  content:'';
  position:absolute;
  top:15%; right:5%;
  width:420px; height:420px;
  background:radial-gradient(circle, rgba(224,123,90,0.07) 0%, transparent 70%);
  border-radius:50%;
  pointer-events:none;
}
.hero::after {
  content:'';
  position:absolute;
  bottom:10%; left:3%;
  width:280px; height:280px;
  background:radial-gradient(circle, rgba(107,143,113,0.06) 0%, transparent 70%);
  border-radius:50%;
  pointer-events:none;
}
.hero .container { 
  display:grid; grid-template-columns:1fr 1fr; gap:48px; 
  align-items:center; position:relative; z-index:1;
  width:100%;
}
.hero-content { max-width:720px; }
.hero-eyebrow { 
  display:inline-block; font-size:0.8rem; font-weight:600; 
  padding:6px 16px; border-radius:20px; margin-bottom:18px; 
  background:#fdf0e9; color:#e07b5a; 
  letter-spacing:0.5px;
  border:1px solid rgba(224,123,90,0.15);
}
.hero h1 { 
  font-size:3.2rem; line-height:1.15; margin-bottom:22px; 
  font-weight:800; color:#3a2f2a; letter-spacing:-0.8px;
}
.hero h1 .highlight { 
  background:linear-gradient(135deg, #e07b5a 0%, #d4a574 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p { 
  font-size:1.1rem; opacity:0.7; max-width:520px; margin-bottom:34px; 
  color:#5c4f48; line-height:1.7;
}
.hero-buttons { display:flex; gap:14px; flex-wrap:wrap; }
.hero-image { 
  border-radius:16px; overflow:hidden; 
  box-shadow:0 20px 50px rgba(58,47,42,0.12), 0 4px 16px rgba(58,47,42,0.06);
  position:relative;
}
.hero-image::after {
  content:'';
  position:absolute;
  inset:0;
  border-radius:16px;
  border:1px solid rgba(255,255,255,0.5);
  pointer-events:none;
}
.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 0.3s ease; font-size:0.95rem;
  letter-spacing:0.2px;
}
.btn-primary { 
  color:#fff; 
  background:linear-gradient(135deg, #e07b5a 0%, #d4815e 100%);
  box-shadow:0 4px 16px rgba(224,123,90,0.3);
}
.btn-primary:hover { 
  transform:translateY(-2px); 
  box-shadow:0 8px 24px rgba(224,123,90,0.38);
}
.btn-outline { 
  background:transparent; border:1.5px solid #d4b8a8; 
  color:#5c4f48;
}
.btn-outline:hover { 
  border-color:#e07b5a; color:#e07b5a; 
  background:rgba(224,123,90,0.04);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.78rem; font-weight:600; 
  letter-spacing:2.5px; margin-bottom:14px; 
  color:#6b8f71; text-transform:uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:16px; 
  font-weight:800; color:#3a2f2a; letter-spacing:-0.5px; 
  line-height:1.25;
}
.section-desc { 
  max-width:600px; opacity:0.7; margin-bottom:44px; 
  color:#5c4f48; font-size:1.05rem; line-height:1.7;
}

/* 卡片网格 */
.cards-grid { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); 
  gap:24px; 
}
.category-card { 
  border-radius:14px; padding:30px 26px; 
  border:1px solid #e8e0d8; 
  transition:all 0.35s ease; 
  background:#fffdf9;
  position:relative;
  overflow:hidden;
}
.category-card::before {
  content:'';
  position:absolute;
  top:0; left:0; width:100%; height:3px;
  background:linear-gradient(90deg, #e07b5a 0%, #d4a574 100%);
  transform:scaleX(0); transform-origin:left;
  transition:transform 0.4s ease;
}
.category-card:hover::before { transform:scaleX(1); }
.category-card:hover { 
  transform:translateY(-4px); 
  box-shadow:0 12px 32px rgba(58,47,42,0.08), 0 2px 8px rgba(58,47,42,0.04); 
  border-color:transparent;
}
.card-icon { 
  width:50px; height:50px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.4rem; 
  background:#fdf0e9; color:#e07b5a;
}
.category-card:nth-child(2n) .card-icon { background:#edf5ee; color:#6b8f71; }
.category-card:nth-child(3n) .card-icon { background:#fef8f2; color:#d4a574; }
.category-card:nth-child(4n) .card-icon { background:#fdf4f0; color:#c98b6e; }
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color:#e07b5a; display:inline-flex; align-items:center; gap:6px;
  transition:gap 0.25s ease;
}
.card-link:hover { gap:10px; }
.card-link::after { content:'→'; font-weight:700; }

/* 特性块 */
.feature-block { 
  display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; 
}
.feature-image { 
  border-radius:14px; overflow:hidden; 
  box-shadow:0 16px 40px rgba(58,47,42,0.1);
  position:relative;
}
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { 
  padding:7px 0; display:flex; align-items:center; gap:10px; 
  color:#5c4f48; font-size:0.98rem;
}
.feature-list li::before { 
  content:'✓'; font-weight:700; 
  color:#6b8f71; font-size:1rem;
  width:24px; height:24px; 
  background:#edf5ee; border-radius:50%;
  display:flex; align-items:center; justify-content:center;
  flex-shrink:0;
}

/* 数据条 */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:20px; text-align:center; 
}
.stat-item { 
  padding:28px 20px; border-radius:14px; 
  border:1px solid #e8e0d8; 
  background:#fffdf9;
  transition:all 0.3s ease;
}
.stat-item:hover { 
  transform:translateY(-3px); 
  box-shadow:0 8px 24px rgba(58,47,42,0.06);
}
.stat-number { 
  font-size:2.4rem; font-weight:800; 
  background:linear-gradient(135deg, #e07b5a 0%, #d4a574 100%);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
  letter-spacing:-0.5px;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color:#5c4f48; 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:14px; overflow:hidden; 
  border:1px solid #e8e0d8; 
  transition:all 0.35s ease; 
  background:#fffdf9;
}
.content-wall-item:hover { 
  transform:translateY(-4px); 
  box-shadow:0 12px 32px rgba(58,47,42,0.08); 
  border-color:transparent;
}
.content-wall-item img { width:100%; height:200px; object-fit:cover; display:block; }
.content-wall-body { padding:20px 18px; }
.content-wall-body h3 { font-size:1.05rem; font-weight:700; color:#3a2f2a; margin-bottom:6px; }
.content-wall-body p { font-size:0.9rem; color:#5c4f48; opacity:0.7; line-height:1.6; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid #e8e0d8; border-radius:12px; 
  margin-bottom:8px; overflow:hidden; cursor:pointer; 
  background:#fffdf9;
  transition:all 0.25s ease;
}
.faq-item:hover { border-color:#d4b8a8; }
.faq-item .faq-question { 
  padding:18px 22px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color:#3a2f2a; font-size:1rem;
  align-items:center;
}
.faq-item .faq-question::after {
  content:'+'; font-size:1.2rem; font-weight:300;
  color:#d4b8a8; transition:transform 0.3s ease;
}
.faq-item.open .faq-question::after { 
  content:'−'; color:#e07b5a; 
  transform:rotate(180deg);
}
.faq-item .faq-answer { 
  padding:0 22px 18px; display:none; opacity:0.7; 
  color:#5c4f48; line-height:1.7; font-size:0.95rem;
}
.faq-item.open .faq-answer { display:block; animation:fadeIn 0.35s ease; }
.faq-item.open { border-color:#e07b5a; box-shadow:0 4px 16px rgba(224,123,90,0.08); }

@keyframes fadeIn {
  from { opacity:0; transform:translateY(-6px); }
  to { opacity:1; transform:translateY(0); }
}

/* CTA横幅 */
.cta-banner { 
  padding:60px 28px; text-align:center; border-radius:16px; 
  color:#fff; 
  background:linear-gradient(135deg, #e07b5a 0%, #d4815e 40%, #d4a574 100%);
  position:relative;
  overflow:hidden;
}
.cta-banner::before {
  content:'';
  position:absolute;
  top:-40%; right:-10%;
  width:300px; height:300px;
  background:rgba(255,255,255,0.06);
  border-radius:50%;
  pointer-events:none;
}
.cta-banner::after {
  content:'';
  position:absolute;
  bottom:-30%; left:-5%;
  width:240px; height:240px;
  background:rgba(255,255,255,0.04);
  border-radius:50%;
  pointer-events:none;
}
.cta-banner h2 { 
  color:#fff; font-size:2rem; font-weight:800; 
  margin-bottom:14px; letter-spacing:-0.5px;
  position:relative; z-index:1;
}
.cta-banner p { 
  opacity:0.9; margin-bottom:24px; font-size:1.05rem;
  position:relative; z-index:1;
}
.cta-banner .btn-primary { 
  background:#fff; color:#e07b5a; 
  box-shadow:0 4px 18px rgba(0,0,0,0.12);
  position:relative; z-index:1;
}
.cta-banner .btn-primary:hover { 
  background:#fefcf8; 
  box-shadow:0 6px 24px rgba(0,0,0,0.16);
  transform:translateY(-2px);
}

/* 页脚 */
.site-footer { 
  padding:56px 0 28px; 
  background:#f5efe8; 
  color:#5c4f48;
  border-top:1px solid #e8e0d8;
}
.site-footer .container { }
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; 
}
.footer-brand { }
.footer-brand .logo { margin-bottom:12px; }
.footer-brand p { opacity:0.7; font-size:0.9rem; line-height:1.7; max-width:280px; }
.footer-col { }
.footer-col h4 { 
  font-size:0.85rem; font-weight:700; 
  margin-bottom:16px; color:#3a2f2a; 
  letter-spacing:1px; text-transform:uppercase;
}
.footer-col a { 
  display:block; text-decoration:none; color:#5c4f48; 
  font-size:0.9rem; padding:4px 0; opacity:0.7;
  transition:all 0.2s ease;
}
.footer-col a:hover { opacity:1; color:#e07b5a; padding-left:4px; }
.footer-bottom { 
  border-top:1px solid #e0d6cc; margin-top:40px; padding-top:20px; 
  text-align:center; font-size:0.85rem; opacity:0.6; 
  color:#5c4f48;
}

/* 工具类 */
.text-accent { color:#e07b5a; }
.text-center { text-align:center; }
.seo-description { 
  max-width:600px; margin:0 auto 48px; opacity:0.7; 
  color:#5c4f48; text-align:center; font-size:0.95rem; line-height:1.7;
}
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 卡片标题 */
.category-card h3, .content-wall-body h3 { 
  font-size:1.08rem; font-weight:700; color:#3a2f2a; margin-bottom:8px; 
}
.category-card p, .content-wall-body p { 
  font-size:0.9rem; color:#5c4f48; opacity:0.7; line-height:1.6; 
}

/* 特性块标题 */
.feature-text h3 { 
  font-size:1.6rem; font-weight:700; color:#3a2f2a; margin-bottom:12px; 
}
.feature-text p { 
  color:#5c4f48; opacity:0.7; margin-bottom:20px; line-height:1.7;
}

/* 链接通用样式 */
a { color:inherit; }
a:focus-visible { outline:2px solid #e07b5a; outline-offset:3px; border-radius:4px; }

/* 图片通用 */
img { max-width:100%; }

/* 选择文本 */
::selection { background:rgba(224,123,90,0.2); color:#3a2f2a; }
::-moz-selection { background:rgba(224,123,90,0.2); color:#3a2f2a; }

/* ⚠️ 响应式 */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns:1fr; gap:36px; }
  .hero-image { max-width:500px; margin:0 auto; }
  .hero h1 { font-size:2.6rem; }
  .feature-block { gap:36px; }
}

@media (max-width: 768px) {
  .section { padding:56px 0; }
  .hero { min-height:60vh; padding-top:68px; }
  .hero h1 { font-size:2.2rem; }
  .hero p { font-size:1rem; }
  .feature-block { grid-template-columns:1fr; gap:32px; }
  .feature-image { order:-1; }
  .stats-bar { grid-template-columns:repeat(2,1fr); gap:14px; }
  .footer-grid { grid-template-columns:1fr 1fr; gap:28px; }
  .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:#fffdf9; padding:24px; 
    box-shadow:0 8px 24px rgba(58,47,42,0.08);
    border-bottom:1px solid #e8e0d8;
    gap:16px;
    z-index:999;
  }
  .main-nav.open a { font-size:1rem; padding:6px 0; }
  .main-nav.open .nav-cta { text-align:center; margin-top:8px; display:inline-block; }
  .section-title { font-size:1.7rem; }
  .cards-grid { gap:16px; }
  .content-wall { gap:16px; }
  .cta-banner { padding:40px 20px; }
  .cta-banner h2 { font-size:1.5rem; }
}

@media (max-width: 480px) {
  .container { padding:0 16px; }
  .header-inner { padding:0 16px; }
  .hero { min-height:55vh; }
  .hero h1 { font-size:1.8rem; }
  .hero .container { gap:24px; }
  .hero-buttons { flex-direction:column; gap:10px; }
  .hero-buttons .btn { justify-content:center; text-align:center; }
  .cards-grid,.content-wall,.stats-bar { grid-template-columns:1fr; }
  .footer-grid { grid-template-columns:1fr; gap:24px; }
  .stats-bar { gap:10px; }
  .stat-item { padding:20px 16px; }
  .stat-number { font-size:1.8rem; }
  .section-title { font-size:1.5rem; }
  .category-card { padding:22px 18px; }
  .faq-item .faq-question { padding:14px 16px; font-size:0.95rem; }
  .faq-item .faq-answer { padding:0 16px 14px; }
  .btn { padding:11px 22px; font-size:0.9rem; }
  .feature-block { gap:24px; }
}