/* 海角入口 - 无界创意视觉系统 */
/* 风格：柔和渐变海洋风 + 磨砂玻璃质感 + 流动波浪 */

*, *::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: linear-gradient(135deg, #f0f7ff 0%, #e8f4f8 50%, #f5f0ff 100%);
  color: #1a2a3a;
  min-height: 100vh;
}

/* 核心布局 */
.container { max-width:1200px; margin:0 auto; padding:0 24px; }
.section { padding:80px 0; position: relative; }
.section:nth-child(even) { 
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255,255,255,0.8);
  border-bottom: 1px solid rgba(255,255,255,0.8);
}

/* 导航 — 磨砂玻璃海面效果 */
.site-header { 
  position:fixed; top:0; left:0; width:100%; z-index:1000; 
  background: rgba(240, 247, 255, 0.85); 
  backdrop-filter: blur(16px) saturate(1.2); 
  border-bottom: 1px solid rgba(255,255,255,0.6);
  box-shadow: 0 2px 30px rgba(100, 180, 255, 0.1);
}
.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:1.2rem; text-decoration:none; 
  color: #1a3a4a; 
  letter-spacing: 1px;
}
.logo-icon { 
  width:36px; height:36px; border-radius:50%; 
  background: linear-gradient(135deg, #6ec6ff, #a78bfa);
  display:flex; align-items:center; justify-content:center; 
  font-size:1rem; color: #fff;
  box-shadow: 0 4px 12px rgba(110, 198, 255, 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: #2a4a5a; transition:0.3s; 
  padding: 4px 0;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover { 
  color: #4a8fbf; 
  border-bottom-color: #6ec6ff;
}
.nav-cta { 
  padding:8px 24px; border-radius:50px; 
  background: linear-gradient(135deg, #6ec6ff, #a78bfa);
  color:#fff!important; font-weight:600; 
  box-shadow: 0 4px 16px rgba(110, 198, 255, 0.3);
  border-bottom: none !important;
}
.nav-cta:hover { 
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(110, 198, 255, 0.4);
  color: #fff !important;
}
.menu-toggle { display:none; }

/* 首页Hero — 波浪流动背景 */
.hero { 
  min-height:75vh; display:flex; align-items:center; 
  position: relative;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(110, 198, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(167, 139, 250, 0.12) 0%, transparent 50%);
}
.hero::before {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 120px;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,60 C200,120 400,0 600,60 C800,120 1000,0 1200,60 L1200,120 L0,120 Z' fill='rgba(255,255,255,0.4)'/%3E%3C/svg%3E") no-repeat bottom;
  background-size: cover;
  opacity: 0.6;
}
.hero-content { max-width:720px; position: relative; z-index: 1; }
.hero-eyebrow { 
  display:inline-block; font-size:0.85rem; font-weight:600; 
  padding:6px 18px; border-radius:50px; margin-bottom:16px; 
  background: rgba(110, 198, 255, 0.15);
  color: #3a7a9a;
  backdrop-filter: blur(4px);
  border: 1px solid rgba(110, 198, 255, 0.2);
}
.hero h1 { 
  font-size:3.2rem; line-height:1.15; margin-bottom:20px; 
  color: #0a2a3a;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.hero h1::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, #6ec6ff, #a78bfa);
  border-radius: 4px;
  margin-top: 16px;
}
.hero p { 
  font-size:1.15rem; opacity:0.75; max-width:560px; margin-bottom:36px; 
  color: #3a5a6a;
  line-height: 1.7;
}
.hero-buttons { display:flex; gap:14px; }
.hero-image { 
  border-radius:20px; overflow:hidden; 
  box-shadow: 0 20px 60px rgba(100, 180, 255, 0.15);
  border: 1px solid rgba(255,255,255,0.5);
}
.hero-image img { width:100%; height:auto; }

/* 按钮 — 海洋渐变 */
.btn { 
  display:inline-flex; align-items:center; gap:8px; 
  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, #6ec6ff, #a78bfa);
  box-shadow: 0 4px 16px rgba(110, 198, 255, 0.3);
}
.btn-primary:hover { 
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(110, 198, 255, 0.4);
}
.btn-outline { 
  background:rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border:1.5px solid rgba(110, 198, 255, 0.3);
  color: #2a5a7a;
}
.btn-outline:hover { 
  background: rgba(110, 198, 255, 0.1);
  border-color: #6ec6ff;
}

/* 标签/标题 */
.section-label { 
  display:inline-block; font-size:0.8rem; font-weight:600; 
  letter-spacing:3px; margin-bottom:12px; 
  color: #5a8aaa;
  text-transform: uppercase;
}
.section-title { 
  font-size:2.2rem; margin-bottom:14px; 
  color: #0a2a3a;
  font-weight: 700;
  letter-spacing: -0.3px;
}
.section-desc { max-width:600px; opacity:0.7; margin-bottom:40px; color: #3a5a6a; }

/* 卡片网格 — 磨砂玻璃卡片 */
.cards-grid { 
  display:grid; grid-template-columns:repeat(auto-fill,minmax(280px,1fr)); gap:28px; 
}
.category-card { 
  border-radius:20px; padding:32px; 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(255,255,255,0.8);
  transition:0.4s; 
  box-shadow: 0 4px 20px rgba(100, 180, 255, 0.08);
}
.category-card:hover { 
  transform:translateY(-6px); 
  box-shadow: 0 12px 40px rgba(100, 180, 255, 0.15);
  background: rgba(255,255,255,0.9);
  border-color: rgba(110, 198, 255, 0.3);
}
.card-icon { 
  width:52px; height:52px; border-radius:14px; 
  background: linear-gradient(135deg, #e0f2ff, #f0e6ff);
  display:flex; align-items:center; justify-content:center; 
  margin-bottom:18px; font-size:1.4rem;
  color: #4a8fbf;
}
.card-link { 
  font-weight:600; font-size:0.85rem; text-decoration:none; 
  color: #4a8fbf;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.card-link::after {
  content: '→';
  transition: 0.3s;
}
.card-link:hover::after {
  transform: translateX(4px);
}

/* 特性块 */
.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(100, 180, 255, 0.12);
  border: 1px solid rgba(255,255,255,0.5);
}
.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: #2a4a5a;
}
.feature-list li::before { 
  content:'✓'; font-weight:700; 
  width: 24px; height: 24px;
  background: linear-gradient(135deg, #6ec6ff, #a78bfa);
  color: #fff;
  border-radius: 50%;
  display: inline-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 20px; border-radius:20px; 
  background: rgba(255,255,255,0.6);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.7);
  transition: 0.3s;
}
.stat-item:hover {
  background: rgba(255,255,255,0.85);
  transform: translateY(-2px);
}
.stat-number { 
  font-size:2.4rem; font-weight:800; 
  background: linear-gradient(135deg, #6ec6ff, #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; color: #3a5a6a; }

/* 内容墙 */
.content-wall { display:grid; grid-template-columns:repeat(auto-fill,minmax(300px,1fr)); gap:24px; }
.content-wall-item { 
  border-radius:20px; overflow:hidden; 
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.6);
  transition:0.4s; 
  box-shadow: 0 4px 16px rgba(100, 180, 255, 0.06);
}
.content-wall-item:hover { 
  transform:translateY(-4px); 
  box-shadow:0 12px 36px rgba(100, 180, 255, 0.12);
  background: rgba(255,255,255,0.9);
}
.content-wall-item img { 
  width:100%; height:220px; object-fit:cover; 
  border-bottom: 1px solid rgba(255,255,255,0.3);
}
.content-wall-body { padding:24px; }

/* FAQ */
.faq-list { max-width:800px; margin:0 auto; }
.faq-item { 
  border: 1px solid rgba(255,255,255,0.6);
  background: rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  border-radius:16px; margin-bottom:10px; 
  overflow:hidden; cursor:pointer; 
  transition: 0.3s;
}
.faq-item:hover {
  background: rgba(255,255,255,0.8);
}
.faq-item .faq-question { 
  padding:18px 24px; font-weight:600; 
  display:flex; justify-content:space-between; 
  color: #1a3a4a;
}
.faq-item .faq-question::after {
  content: '+';
  font-size: 1.2rem;
  color: #6ec6ff;
  transition: 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; 
  color: #3a5a6a;
  line-height: 1.6;
}
.faq-item.open .faq-answer { display:block; }

/* CTA横幅 */
.cta-banner { 
  padding:60px 24px; text-align:center; border-radius:24px; 
  background: linear-gradient(135deg, #6ec6ff, #a78bfa);
  color:#fff; 
  box-shadow: 0 16px 48px rgba(110, 198, 255, 0.2);
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%; left: -50%; width: 200%; height: 200%;
  background: radial-gradient(circle at 30% 50%, rgba(255,255,255,0.1) 0%, transparent 60%);
  animation: shimmer 8s infinite linear;
}
@keyframes shimmer {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}
.cta-banner h2 { color:#fff; font-size: 1.8rem; position: relative; z-index: 1; }
.cta-banner .btn-primary { 
  background:#fff; 
  color: #2a5a7a !important;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  position: relative; z-index: 1;
}

/* 页脚 */
.site-footer { 
  padding:60px 0 28px; 
  background: rgba(10, 42, 58, 0.95);
  backdrop-filter: blur(20px);
  color: rgba(255,255,255,0.8);
  border-top: 1px solid rgba(255,255,255,0.05);
}
.site-footer .container { }
.footer-grid { display:grid; grid-template-columns:2fr 1fr 1fr 1fr; gap:40px; }
.footer-brand { }
.footer-col { }
.footer-col h4 { color: #fff; margin-bottom: 16px; font-size: 1rem; }
.footer-col a { color: rgba(255,255,255,0.6); text-decoration: none; display: block; padding: 4px 0; transition: 0.3s; }
.footer-col a:hover { color: #6ec6ff; }
.footer-bottom { 
  border-top:1px solid rgba(255,255,255,0.08); 
  margin-top:40px; padding-top:24px; text-align:center; 
  font-size:0.85rem; opacity: 0.6;
}

/* 工具类 */
.text-accent { 
  background: linear-gradient(135deg, #6ec6ff, #a78bfa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-center { text-align:center; }
.seo-description { max-width:600px; margin:0 auto 48px; opacity:0.7; color: #3a5a6a; }
.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; }
  .main-nav.open { 
    display:flex; flex-direction:column; 
    position:absolute; top:68px; left:0; width:100%; 
    background: rgba(240, 247, 255, 0.98);
    backdrop-filter: blur(20px);
    padding:24px; gap: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.5);
  }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.6rem; }
}
@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; }
  .hero { min-height: 60vh; }
}