/*
* 磁力链接下载工具 - bt工厂 - 磁链极速·精准直达
* 视觉风格：清新薄荷 + 磁力流体 + 科技圆润
* 配色：薄荷绿(#00C9A7) + 珊瑚粉(#FF6B6B) + 米白(#FEF9F0)
* 字体：系统原生 + 圆润字重对比
*/

*, *::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: #FEF9F0;
  color: #2D3436;
}

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; }
.section:nth-child(even) { 
  background: linear-gradient(135deg, #F0FDFA 0%, #FFF5F5 100%);
}

/* 导航 - 半透明磨砂 + 薄荷底 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(254,249,240,0.92); 
  backdrop-filter:blur(12px); 
  border-bottom: 1px solid rgba(0,201,167,0.15);
  box-shadow: 0 2px 20px rgba(0,201,167,0.06);
}
.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:800; font-size:1.25rem; text-decoration:none; 
  color: #00C9A7;
  letter-spacing: -0.3px;
}
.logo-icon { 
  width:38px; height:38px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.1rem; 
  background: linear-gradient(135deg, #00C9A7, #FF6B6B);
  color: #fff;
  box-shadow: 0 4px 12px rgba(0,201,167,0.3);
}
.main-nav { display:flex; align-items:center; gap:28px; list-style:none; }
.main-nav a { 
  text-decoration:none; font-size:0.92rem; font-weight:500; 
  transition:0.25s; color: #2D3436;
  position: relative;
}
.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: #00C9A7;
  transition: width 0.3s;
  border-radius: 4px;
}
.main-nav a:hover::after { width: 100%; }
.main-nav a:hover { color: #00C9A7; }
.nav-cta { 
  padding:10px 24px; border-radius:50px; 
  color:#fff!important; font-weight:600; 
  background: linear-gradient(135deg, #00C9A7, #FF6B6B);
  box-shadow: 0 4px 14px rgba(0,201,167,0.25);
  transition: all 0.3s;
}
.nav-cta:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(0,201,167,0.35); }
.nav-cta::after { display: none!important; }
.menu-toggle { display:none; }

/* Hero - 磁力流体波浪 */
.hero { 
  min-height:75vh; display:flex; align-items:center; 
  background: linear-gradient(135deg, #FEF9F0 0%, #E8F8F5 50%, #FFF0F0 100%);
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(0,201,167,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -20%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,107,107,0.06) 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:700; 
  padding:6px 18px; border-radius:50px; margin-bottom:18px; 
  background: rgba(0,201,167,0.12);
  color: #00C9A7;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.hero h1 { 
  font-size:3rem; line-height:1.15; margin-bottom:22px; 
  font-weight: 800;
  background: linear-gradient(135deg, #2D3436 40%, #00C9A7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { 
  font-size:1.1rem; opacity:0.75; max-width:560px; margin-bottom:36px; 
  color: #555;
  line-height: 1.7;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow: 0 20px 60px rgba(0,201,167,0.15);
  border: 2px solid rgba(0,201,167,0.1);
}
.hero-image img { width:100%; height:auto; }

/* 按钮 - 圆润磁力 */
.btn { 
  display:inline-flex; align-items:center; gap:10px; 
  padding:14px 32px; border-radius:50px; 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, #00C9A7, #00B894);
  box-shadow: 0 4px 16px rgba(0,201,167,0.3);
}
.btn-primary:hover { 
  transform: translateY(-3px); 
  box-shadow: 0 8px 24px rgba(0,201,167,0.4); 
}
.btn-outline { 
  background:transparent; border:2px solid #00C9A7; 
  color: #00C9A7;
}
.btn-outline:hover { 
  background: rgba(0,201,167,0.06); 
  transform: translateY(-2px);
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.8rem; font-weight:700; 
  letter-spacing:2px; margin-bottom:14px; 
  color: #00C9A7;
  text-transform: uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:16px; font-weight:800; 
  color: #2D3436;
  letter-spacing: -0.5px;
}
.section-desc { 
  max-width:600px; opacity:0.7; margin-bottom:44px; 
  line-height: 1.7;
}

/* 卡片网格 - 圆润卡片层叠 */
.cards-grid { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(270px,1fr)); 
  gap:28px; 
}
.category-card { 
  border-radius:20px; padding:32px; 
  background: #fff;
  border: 1px solid rgba(0,201,167,0.1);
  transition:0.35s; 
  box-shadow: 0 4px 20px rgba(0,0,0,0.03);
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(0,201,167,0.12);
  border-color: rgba(0,201,167,0.2);
}
.card-icon { 
  width:52px; height:52px; border-radius:16px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.5rem; 
  background: linear-gradient(135deg, #E8F8F5, #FFF0F0);
  color: #00C9A7;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color: #00C9A7;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: gap 0.3s;
}
.card-link:hover { gap: 8px; }

/* 特性块 - 左右错落 */
.feature-block { 
  display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:center; 
}
.feature-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow: 0 16px 48px rgba(0,201,167,0.1);
  border: 2px solid rgba(0,201,167,0.06);
}
.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; 
  font-size: 1rem;
}
.feature-list li::before { 
  content:'✓'; font-weight:700; 
  color: #00C9A7;
  font-size: 1.2rem;
}

/* 数据条 - 薄荷渐变 */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; 
}
.stat-item { 
  padding:28px 20px; border-radius:20px; 
  background: #fff;
  border: 1px solid rgba(0,201,167,0.08);
  box-shadow: 0 4px 20px rgba(0,0,0,0.02);
  transition: 0.3s;
}
.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0,201,167,0.1);
}
.stat-number { 
  font-size:2.4rem; font-weight:800; 
  background: linear-gradient(135deg, #00C9A7, #FF6B6B);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; }

/* 内容墙 - 磁力网格 */
.content-wall { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(290px,1fr)); 
  gap:28px; 
}
.content-wall-item { 
  border-radius:20px; overflow:hidden; 
  background: #fff;
  border: 1px solid rgba(0,201,167,0.08);
  transition:0.35s; 
  box-shadow: 0 4px 16px rgba(0,0,0,0.02);
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(0,201,167,0.12);
  border-color: rgba(0,201,167,0.15);
}
.content-wall-item img { 
  width:100%; height:210px; object-fit:cover; 
}
.content-wall-body { padding:24px; }

/* FAQ - 圆润折叠 */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border: 1px solid rgba(0,201,167,0.1); 
  border-radius:16px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  background: #fff;
  transition: 0.3s;
}
.faq-item:hover {
  border-color: rgba(0,201,167,0.2);
}
.faq-item .faq-question { 
  padding:18px 24px; font-weight:600; 
  display:flex; justify-content:space-between; 
  align-items: center;
  color: #2D3436;
  font-size: 1.02rem;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: #00C9A7;
  transition: transform 0.3s;
}
.faq-item.open .faq-question::after {
  content: '−';
  transform: rotate(180deg);
}
.faq-item .faq-answer { 
  padding:0 24px 20px; display:none; opacity:0.75; 
  line-height: 1.7;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 - 珊瑚薄荷渐变 */
.cta-banner { 
  padding:64px 32px; text-align:center; border-radius:24px; 
  background: linear-gradient(135deg, #00C9A7 0%, #FF6B6B 100%);
  color:#fff; 
  box-shadow: 0 20px 60px rgba(0,201,167,0.25);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  background: rgba(255,255,255,0.06);
  border-radius: 50%;
}
.cta-banner h2 { 
  color:#fff; font-size:2rem; margin-bottom:16px; 
  font-weight: 800;
}
.cta-banner .btn-primary { 
  background:#fff; color: #00C9A7; 
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}
.cta-banner .btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

/* 页脚 - 薄荷深色 */
.site-footer { 
  padding:60px 0 32px; 
  background: #2D3436;
  color: rgba(255,255,255,0.8);
}
.site-footer .container { }
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; 
}
.footer-brand { }
.footer-brand .logo { color: #00C9A7; }
.footer-col { }
.footer-col h4 { 
  color: #fff; margin-bottom:16px; font-size:0.95rem; 
  font-weight: 700;
}
.footer-col a { 
  color: rgba(255,255,255,0.6); text-decoration:none; 
  display: block; padding: 4px 0; transition: 0.2s;
  font-size: 0.9rem;
}
.footer-col a:hover { color: #00C9A7; }
.footer-bottom { 
  border-top: 1px solid rgba(255,255,255,0.08); 
  margin-top:44px; padding-top:24px; text-align:center; 
  font-size:0.85rem; color: rgba(255,255,255,0.4);
}

/* 工具类 */
.text-accent { color: #00C9A7; }
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; }
.mt-0 { margin-top:0; }
.mb-0 { margin-bottom:0; }

/* 响应式 */
@media (max-width: 768px) {
  .feature-block { grid-template-columns:1fr; }
  .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:68px; left:0; width:100%; 
    background: #FEF9F0; padding:20px; 
    border-bottom: 1px solid rgba(0,201,167,0.1);
  }
  .hero h1 { font-size:2.2rem; }
  .section-title { font-size:1.8rem; }
}
@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; }
}