/* 蘑菇视频 - 菌丝森林风格 */
/* 独特视觉：以菌丝网络为灵感的有机线条 + 自然渐变色 + 蘑菇元素 */

*, *::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:#f5f0eb; color:#3d2c1e; }

/* 菌丝纹理背景 */
body::before {
  content:'';
  position:fixed;
  top:0;left:0;right:0;bottom:0;
  background:
    radial-gradient(circle at 15% 30%, rgba(180,210,160,0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(220,190,160,0.12) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(200,180,150,0.08) 0%, transparent 60%);
  pointer-events:none;
  z-index:-1;
}

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:rgba(240,235,225,0.6); }

/* ===== 导航 ===== */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background:rgba(245,240,235,0.92); 
  backdrop-filter:blur(12px); 
  border-bottom:2px solid #d4c8b8;
}
.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:700; font-size:1.25rem; text-decoration:none; color:#3d2c1e;
  letter-spacing:1px;
}
.logo-icon { 
  width:40px; height:40px; border-radius:50%; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.2rem; 
  background:linear-gradient(135deg, #b8a080, #8a7a60);
  color:#fff;
  box-shadow:0 2px 8px rgba(138,122,96,0.3);
}
.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:#5a4a3a; transition:0.3s; position:relative;
  padding-bottom:4px;
}
.main-nav a::after {
  content:'';
  position:absolute;
  bottom:0;left:0;
  width:0;height:2px;
  background:#8a7a60;
  transition:0.3s;
}
.main-nav a:hover::after { width:100%; }
.main-nav a:hover { color:#3d2c1e; }
.nav-cta { 
  padding:10px 22px; border-radius:30px; 
  background:linear-gradient(135deg, #b8a080, #8a7a60);
  color:#fff!important; font-weight:600; 
  box-shadow:0 2px 10px rgba(138,122,96,0.2);
}
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; }

/* ===== Hero ===== */
.hero { 
  min-height:75vh; display:flex; align-items:center; 
  position:relative; overflow:hidden;
}
.hero::before {
  content:'';
  position:absolute;
  top:-80px;right:-80px;
  width:400px;height:400px;
  background:radial-gradient(circle, rgba(180,210,160,0.2) 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:0.8rem; font-weight:700; 
  padding:5px 16px; border-radius:30px; margin-bottom:18px; 
  background:rgba(180,210,160,0.3);
  color:#5a7a4a;
  letter-spacing:1px;
  text-transform:uppercase;
}
.hero h1 { 
  font-size:2.8rem; line-height:1.15; margin-bottom:18px; 
  color:#3d2c1e;
}
.hero h1 span {
  display:inline-block;
  background:linear-gradient(135deg, #8a7a60, #b8a080);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p { 
  font-size:1.1rem; opacity:0.7; max-width:560px; margin-bottom:36px; 
  color:#5a4a3a; line-height:1.6;
}
.hero-buttons { display:flex; gap:14px; }
.hero-image { 
  border-radius:16px; overflow:hidden; 
  box-shadow:0 8px 30px rgba(138,122,96,0.15);
  border:2px solid #e0d5c8;
}

/* ===== 按钮 ===== */
.btn { 
  display:inline-flex; align-items:center; gap:8px; 
  padding:14px 30px; border-radius:30px; 
  font-weight:600; cursor:pointer; border:none; 
  text-decoration:none; transition:0.3s; 
  font-size:0.95rem;
}
.btn-primary { 
  color:#fff; 
  background:linear-gradient(135deg, #b8a080, #8a7a60);
  box-shadow:0 2px 12px rgba(138,122,96,0.25);
}
.btn-primary:hover { 
  transform:translateY(-2px);
  box-shadow:0 4px 20px rgba(138,122,96,0.35);
}
.btn-outline { 
  background:transparent; border:2px solid #8a7a60; 
  color:#5a4a3a;
}
.btn-outline:hover { 
  background:rgba(138,122,96,0.08);
  border-color:#6a5a4a;
}

/* ===== 标签/标题 ===== */
.section-label { 
  display:inline-block; font-size:0.75rem; font-weight:700; 
  letter-spacing:3px; margin-bottom:14px; 
  color:#8a7a60;
  text-transform:uppercase;
}
.section-title { 
  font-size:2rem; margin-bottom:16px; 
  color:#3d2c1e; font-weight:700;
  line-height:1.2;
}
.section-desc { 
  max-width:600px; opacity:0.7; margin-bottom:40px; 
  color:#5a4a3a; line-height:1.6;
}

/* ===== 卡片网格 ===== */
.cards-grid { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; 
}
.category-card { 
  border-radius:16px; padding:32px; 
  background:#fff;
  border:2px solid #e0d5c8;
  transition:0.3s; position:relative;
  overflow:hidden;
}
.category-card::before {
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg, #b8a080, #8a7a60, #b8a080);
  opacity:0;
  transition:0.3s;
}
.category-card:hover::before { opacity:1; }
.category-card:hover { 
  transform:translateY(-4px); 
  box-shadow:0 8px 30px rgba(138,122,96,0.12);
  border-color:#c8b8a8;
}
.card-icon { 
  width:52px; height:52px; border-radius:14px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.4rem;
  background:rgba(180,210,160,0.2);
  color:#5a7a4a;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color:#8a7a60; display:inline-flex; align-items:center; gap:6px;
}
.card-link:hover { color:#5a4a3a; }

/* ===== 特性块 ===== */
.feature-block { display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
.feature-image { 
  border-radius:16px; overflow:hidden; 
  box-shadow:0 6px 24px rgba(138,122,96,0.12);
  border:2px solid #e0d5c8;
}
.feature-image img { width:100%; height:auto; }
.feature-text { }
.feature-list { list-style:none; }
.feature-list li { 
  padding:8px 0; display:flex; align-items:center; gap:10px; 
  color:#5a4a3a;
}
.feature-list li::before { 
  content:'🍄'; 
  font-weight:700; 
}

/* ===== 数据条 ===== */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:28px; text-align:center; 
}
.stat-item { 
  padding:28px 20px; border-radius:16px; 
  background:#fff;
  border:2px solid #e0d5c8;
  transition:0.3s;
}
.stat-item:hover {
  transform:translateY(-3px);
  box-shadow:0 6px 20px rgba(138,122,96,0.1);
}
.stat-number { 
  font-size:2.4rem; font-weight:800; 
  background:linear-gradient(135deg, #8a7a60, #b8a080);
  -webkit-background-clip:text;
  -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; color:#5a4a3a; }

/* ===== 内容墙 ===== */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:28px; }
.content-wall-item { 
  border-radius:16px; overflow:hidden; 
  background:#fff;
  border:2px solid #e0d5c8;
  transition:0.3s;
}
.content-wall-item:hover { 
  transform:translateY(-4px); 
  box-shadow:0 8px 30px rgba(138,122,96,0.12);
  border-color:#c8b8a8;
}
.content-wall-item img { 
  width:100%; height:200px; object-fit:cover; 
  border-bottom:2px solid #e0d5c8;
}
.content-wall-body { padding:22px; }
.content-wall-body h3 { color:#3d2c1e; margin-bottom:8px; }
.content-wall-body p { color:#5a4a3a; opacity:0.7; line-height:1.5; }

/* ===== FAQ ===== */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:2px solid #e0d5c8; border-radius:14px; 
  margin-bottom:10px; overflow:hidden; cursor:pointer; 
  background:#fff;
  transition:0.3s;
}
.faq-item:hover { border-color:#c8b8a8; }
.faq-item .faq-question { 
  padding:18px 22px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color:#3d2c1e;
  transition:0.3s;
}
.faq-item.open .faq-question { color:#8a7a60; }
.faq-item .faq-question::after {
  content:'+';
  font-size:1.2rem;
  transition:0.3s;
}
.faq-item.open .faq-question::after {
  content:'−';
  color:#8a7a60;
}
.faq-item .faq-answer { 
  padding:0 22px 18px; display:none; 
  opacity:0.7; line-height:1.6; color:#5a4a3a;
}
.faq-item.open .faq-answer { display:block; }

/* ===== CTA ===== */
.cta-banner { 
  padding:60px 24px; text-align:center; border-radius:20px; 
  background:linear-gradient(135deg, #8a7a60, #b8a080);
  color:#fff; 
  box-shadow:0 8px 30px rgba(138,122,96,0.2);
}
.cta-banner h2 { color:#fff; font-size:1.8rem; margin-bottom:12px; }
.cta-banner p { color:rgba(255,255,255,0.8); margin-bottom:24px; }
.cta-banner .btn-primary { 
  background:#fff; color:#5a4a3a; 
  box-shadow:0 2px 12px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover {
  transform:translateY(-2px);
  box-shadow:0 4px 20px rgba(0,0,0,0.15);
}

/* ===== 页脚 ===== */
.site-footer { 
  padding:60px 0 28px; 
  background:#3d2c1e; 
  color:rgba(255,255,255,0.8);
  position:relative;
}
.site-footer::before {
  content:'';
  position:absolute;
  top:0;left:0;right:0;height:4px;
  background:linear-gradient(90deg, #8a7a60, #b8a080, #8a7a60);
}
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; 
}
.footer-brand { }
.footer-brand h3 { color:#fff; font-size:1.1rem; margin-bottom:12px; }
.footer-brand p { opacity:0.6; line-height:1.6; }
.footer-col h4 { color:#fff; font-size:0.95rem; margin-bottom:14px; }
.footer-col ul { list-style:none; }
.footer-col li { margin-bottom:8px; }
.footer-col a { 
  color:rgba(255,255,255,0.6); text-decoration:none; 
  transition:0.3s;
}
.footer-col a:hover { color:#b8a080; }
.footer-bottom { 
  border-top:1px solid rgba(255,255,255,0.1); 
  margin-top:40px; padding-top:20px; 
  text-align:center; font-size:0.85rem; 
  opacity:0.5;
}

/* ===== 工具类 ===== */
.text-accent { color:#8a7a60; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; line-height:1.6; }
.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; align-items:center; justify-content:center; width:40px; height:40px; }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:72px; left:0; width:100%; 
    background:rgba(245,240,235,0.98);
    padding:24px; gap:16px;
    border-bottom:2px solid #d4c8b8;
  }
  .hero h1 { font-size: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:1.6rem; }
  .section-title { font-size:1.5rem; }
}