/*
  2048我为人人人人为我 - 设计系统
  风格：杂志风 + 渐变流体 + 大胆排版
  主色：珊瑚粉 #FF6B6B + 天蓝 #4ECDC4 + 薰衣草 #A78BFA
  背景：米白 #FDF8F5
  字体：系统无衬线，大字号对比
*/

*, *::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:#FDF8F5; 
  color:#2D2B3A; 
  line-height:1.6;
}

::selection { background:#FF6B6B; color:#fff; }

.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position:relative; }
.section:nth-child(even) { background:#F8F4F1; }

/* 导航 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background:rgba(253,248,245,0.92); 
  backdrop-filter:blur(12px); 
  border-bottom:1px solid rgba(167,139,250,0.15); 
}
.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:#2D2B3A; 
  letter-spacing:-0.5px;
}
.logo-icon { 
  width:40px; height:40px; border-radius:12px; 
  display:flex; align-items:center; justify-content:center; 
  font-size:1.2rem; 
  background:linear-gradient(135deg, #FF6B6B, #A78BFA); 
  color:#fff;
}
.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:#2D2B3A; transition:0.2s; position:relative; 
}
.main-nav a::after {
  content:''; position:absolute; bottom:-4px; left:0; 
  width:0; height:2px; background:linear-gradient(90deg, #FF6B6B, #4ECDC4); 
  transition:0.3s;
}
.main-nav a:hover::after { width:100%; }
.main-nav a:hover { color:#FF6B6B; }
.nav-cta { 
  padding:10px 24px; border-radius:50px; 
  background:linear-gradient(135deg, #FF6B6B, #A78BFA); 
  color:#fff!important; font-weight:600; 
  box-shadow:0 4px 15px rgba(255,107,107,0.3);
  transition:0.3s;
}
.nav-cta:hover { transform:translateY(-2px); box-shadow:0 6px 20px rgba(255,107,107,0.4); }
.nav-cta::after { display:none!important; }
.menu-toggle { display:none; background:none; border:none; font-size:1.5rem; cursor:pointer; color:#2D2B3A; }

/* Hero区 - 杂志风大胆排版 */
.hero { 
  min-height:80vh; display:flex; align-items:center; 
  position:relative; overflow:hidden; 
  background:linear-gradient(170deg, #FDF8F5 0%, #F0EDFF 40%, #FFF0F0 100%);
}
.hero::before {
  content:'2048'; 
  position:absolute; top:-120px; right:-60px; 
  font-size:28rem; font-weight:900; 
  color:rgba(167,139,250,0.06); 
  letter-spacing:-20px; line-height:1;
  pointer-events:none;
}
.hero-content { max-width:720px; position:relative; z-index:2; }
.hero-eyebrow { 
  display:inline-block; font-size:0.75rem; font-weight:700; 
  padding:6px 18px; border-radius:50px; margin-bottom:20px; 
  background:linear-gradient(135deg, rgba(255,107,107,0.15), rgba(78,205,196,0.15)); 
  color:#FF6B6B; letter-spacing:3px; text-transform:uppercase;
}
.hero h1 { 
  font-size:3.6rem; line-height:1.1; margin-bottom:24px; 
  font-weight:800; letter-spacing:-2px;
  background:linear-gradient(135deg, #2D2B3A 0%, #FF6B6B 50%, #4ECDC4 100%);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.hero p { 
  font-size:1.15rem; opacity:0.75; max-width:540px; margin-bottom:36px; 
  color:#4A485A; line-height:1.8;
}
.hero-buttons { display:flex; gap:16px; }
.hero-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow:0 20px 60px rgba(167,139,250,0.15); 
  transform:rotate(2deg); transition:0.4s;
}
.hero-image:hover { transform:rotate(0deg) scale(1.02); }
.hero-image img { width:100%; height:auto; display:block; }

/* 按钮 - 流体渐变 */
.btn { 
  display:inline-flex; align-items:center; gap:10px; 
  padding:14px 32px; border-radius:50px; font-weight:700; 
  cursor:pointer; border:none; text-decoration:none; 
  transition:0.3s; font-size:0.95rem;
}
.btn-primary { 
  background:linear-gradient(135deg, #FF6B6B, #A78BFA); 
  color:#fff; box-shadow:0 4px 15px rgba(255,107,107,0.3);
}
.btn-primary:hover { transform:translateY(-3px); box-shadow:0 8px 25px rgba(255,107,107,0.4); }
.btn-outline { 
  background:transparent; border:2px solid #A78BFA; 
  color:#A78BFA; 
}
.btn-outline:hover { background:rgba(167,139,250,0.1); transform:translateY(-2px); }

/* 标签/标题 - 杂志感 */
.section-label { 
  display:inline-block; font-size:0.75rem; font-weight:700; 
  letter-spacing:4px; margin-bottom:16px; 
  color:#A78BFA; text-transform:uppercase;
}
.section-title { 
  font-size:2.4rem; margin-bottom:16px; font-weight:800; 
  letter-spacing:-1px; line-height:1.2;
}
.section-desc { max-width:600px; opacity:0.7; margin-bottom:48px; font-size:1.05rem; }

/* 卡片网格 - 层叠卡片 */
.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:1px solid rgba(167,139,250,0.1); 
  transition:0.3s; position:relative; overflow:hidden;
}
.category-card::before {
  content:''; position:absolute; top:0; left:0; 
  width:100%; height:4px; 
  background:linear-gradient(90deg, #FF6B6B, #4ECDC4, #A78BFA);
  opacity:0; transition:0.3s;
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow:0 12px 40px rgba(167,139,250,0.12); 
}
.category-card:hover::before { opacity:1; }
.card-icon { 
  width:52px; height:52px; border-radius:14px; 
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:20px; font-size:1.5rem; 
  background:linear-gradient(135deg, rgba(255,107,107,0.1), rgba(78,205,196,0.1));
}
.card-link { 
  font-weight:700; font-size:0.85rem; text-decoration:none; 
  color:#FF6B6B; display:inline-flex; align-items:center; gap:6px;
  transition:0.2s;
}
.card-link:hover { gap:12px; color:#A78BFA; }

/* 特性块 - 不对称布局 */
.feature-block { 
  display:grid; grid-template-columns:1.2fr 0.8fr; gap:64px; align-items:center; 
}
.feature-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow:0 12px 40px rgba(167,139,250,0.1); 
  transform:rotate(-1deg); transition:0.4s;
}
.feature-image:hover { transform:rotate(0deg) scale(1.01); }
.feature-image img { width:100%; height:auto; display:block; }
.feature-text { }
.feature-list { list-style:none; margin-top:16px; }
.feature-list li { 
  padding:10px 0; display:flex; align-items:center; gap:12px; 
  font-size:1rem; border-bottom:1px solid rgba(167,139,250,0.08);
}
.feature-list li::before { 
  content:'✦'; font-weight:700; color:#4ECDC4; font-size:1.2rem; 
}

/* 数据条 - 彩色块 */
.stats-bar { 
  display:grid; grid-template-columns:repeat(4,1fr); gap:24px; text-align:center; 
}
.stat-item { 
  padding:32px 20px; border-radius:16px; 
  background:#fff; border:1px solid rgba(167,139,250,0.1); 
  transition:0.3s;
}
.stat-item:hover { transform:translateY(-4px); box-shadow:0 8px 30px rgba(167,139,250,0.1); }
.stat-number { 
  font-size:2.6rem; font-weight:900; 
  background:linear-gradient(135deg, #FF6B6B, #A78BFA);
  -webkit-background-clip:text; -webkit-text-fill-color:transparent;
  background-clip:text;
}
.stat-label { font-size:0.9rem; opacity:0.6; margin-top:8px; text-transform:uppercase; letter-spacing:1px; }

/* 内容墙 - 杂志网格 */
.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:1px solid rgba(167,139,250,0.08); 
  transition:0.3s;
}
.content-wall-item:hover { 
  transform:translateY(-6px); 
  box-shadow:0 12px 40px rgba(167,139,250,0.12); 
}
.content-wall-item img { 
  width:100%; height:220px; object-fit:cover; 
  transition:0.4s;
}
.content-wall-item:hover img { transform:scale(1.05); }
.content-wall-body { padding:24px; }
.content-wall-body h3 { font-size:1.1rem; margin-bottom:8px; }

/* FAQ - 现代手风琴 */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border:1px solid rgba(167,139,250,0.12); 
  border-radius:14px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  background:#fff; transition:0.3s;
}
.faq-item:hover { border-color:#A78BFA; }
.faq-item .faq-question { 
  padding:18px 24px; font-weight:700; 
  display:flex; justify-content:space-between; 
  font-size:1.05rem; color:#2D2B3A;
}
.faq-item .faq-question::after {
  content:'+'; font-size:1.3rem; color:#A78BFA; transition:0.3s;
}
.faq-item.open .faq-question::after { content:'−'; }
.faq-item .faq-answer { 
  padding:0 24px 20px; display:none; opacity:0.8; 
  line-height:1.7;
}
.faq-item.open .faq-answer { display:block; }
.faq-item.open { border-color:#FF6B6B; }

/* CTA横幅 - 渐变冲击 */
.cta-banner { 
  padding:64px 32px; text-align:center; border-radius:20px; 
  background:linear-gradient(135deg, #FF6B6B, #A78BFA, #4ECDC4); 
  color:#fff; position:relative; overflow:hidden; 
  box-shadow:0 16px 50px rgba(255,107,107,0.25);
}
.cta-banner::before {
  content:'✦'; position:absolute; top:-30px; right:-30px; 
  font-size:12rem; opacity:0.1; color:#fff;
}
.cta-banner h2 { color:#fff; font-size:2.2rem; margin-bottom:16px; }
.cta-banner p { color:rgba(255,255,255,0.85); margin-bottom:28px; }
.cta-banner .btn-primary { background:#fff; color:#FF6B6B; box-shadow:0 4px 15px rgba(0,0,0,0.1); }
.cta-banner .btn-primary:hover { transform:translateY(-3px); box-shadow:0 8px 25px rgba(0,0,0,0.15); }

/* 页脚 - 浅色优雅 */
.site-footer { 
  padding:64px 0 32px; 
  background:#F0EDFF; 
  border-top:1px solid rgba(167,139,250,0.1);
}
.footer-grid { 
  display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:48px; 
}
.footer-brand p { opacity:0.7; max-width:300px; margin-top:12px; }
.footer-col h4 { font-size:0.9rem; font-weight:700; margin-bottom:16px; color:#2D2B3A; text-transform:uppercase; letter-spacing:1px; }
.footer-col a { 
  display:block; padding:6px 0; text-decoration:none; 
  color:#4A485A; opacity:0.7; transition:0.2s; font-size:0.9rem;
}
.footer-col a:hover { opacity:1; color:#FF6B6B; }
.footer-bottom { 
  border-top:1px solid rgba(167,139,250,0.15); 
  margin-top:48px; padding-top:24px; text-align:center; 
  font-size:0.85rem; opacity:0.6; 
}

/* 工具类 */
.text-accent { color:#FF6B6B; }
.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) {
  .hero h1 { font-size:2.4rem; }
  .hero::before { font-size:12rem; top:-60px; right:-30px; }
  .feature-block { grid-template-columns:1fr; gap:40px; }
  .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:#FDF8F5; padding:24px; gap:16px;
    border-bottom:1px solid rgba(167,139,250,0.1);
  }
  .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:2rem; }
  .hero-eyebrow { font-size:0.65rem; }
}