*, *::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: #FFFCF7; /* 暖白基调 */
  color: #2D3436;
  line-height: 1.6;
}

/* 色彩系统 – 珊瑚橙 + 深海蓝绿 + 柔和金 */
:root {
  --primary: #FF6B6B;
  --primary-dark: #E55A5A;
  --secondary: #4ECDC4;
  --accent-gold: #FDCB6E;
  --text-dark: #2D3436;
  --text-light: #636E72;
  --bg-light: #FFF6F0;
  --white: #FFFFFF;
  --card-shadow: 0 8px 30px rgba(255,107,107,0.12);
  --border-light: #F0E6DE;
}

::selection { background: var(--primary); color: white; }

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

/* ===== 导航 ===== */
.site-header {
  position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
  background: rgba(255,252,247,0.92); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  transition: background 0.3s;
}
.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: 1.1rem; letter-spacing: -0.5px;
  text-decoration: none; color: var(--text-dark);
}
.logo-icon {
  width: 38px; height: 38px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; font-weight: 700; color: white;
  background: linear-gradient(135deg, var(--primary), var(--accent-gold));
}
.main-nav { display: flex; align-items: center; gap: 28px; list-style: none; }
.main-nav a {
  text-decoration: none; font-size: 0.85rem; font-weight: 600; color: var(--text-dark);
  padding: 4px 0; transition: 0.2s; position: relative;
}
.main-nav a::after {
  content: ''; position: absolute; bottom: -2px; left: 0; width: 0; height: 2px;
  background: var(--primary); transition: 0.3s;
}
.main-nav a:hover { color: var(--primary); }
.main-nav a:hover::after { width: 100%; }
.nav-cta {
  padding: 8px 24px; border-radius: 50px; color: white !important;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  font-weight: 700; box-shadow: 0 4px 14px rgba(255,107,107,0.3);
}
.nav-cta::after { display: none !important; }
.menu-toggle { display: none; flex-direction: column; gap: 4px; background: none; border: none; cursor: pointer; }
.menu-toggle span { width: 24px; height: 2px; background: var(--text-dark); border-radius: 2px; }

/* ===== Hero ===== */
.hero {
  min-height: 70vh; display: flex; align-items: center; position: relative;
  overflow: hidden; background: linear-gradient(120deg, #FFF6F0 0%, #FDE8D0 100%);
}
.hero::before {
  content: ''; position: absolute; right: -10%; top: -10%; width: 50%; height: 80%;
  background: radial-gradient(circle, rgba(255,107,107,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.hero-content { max-width: 680px; position: relative; z-index: 1; }
.hero-eyebrow {
  display: inline-block; font-size: 0.75rem; font-weight: 700; letter-spacing: 3px;
  padding: 6px 18px; border-radius: 30px; margin-bottom: 20px;
  background: rgba(255,107,107,0.12); color: var(--primary); text-transform: uppercase;
}
.hero h1 {
  font-size: 3.2rem; line-height: 1.15; margin-bottom: 20px; font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero p { font-size: 1.1rem; color: var(--text-light); max-width: 520px; margin-bottom: 36px; }
.hero-buttons { display: flex; gap: 14px; }
.hero-image {
  border-radius: 20px; overflow: hidden; margin-top: 24px;
  box-shadow: 0 20px 60px rgba(255,107,107,0.18);
}
.hero-image img { width: 100%; height: auto; display: block; }

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 14px 32px; border-radius: 50px; font-weight: 700;
  cursor: pointer; border: none; text-decoration: none;
  transition: all 0.3s cubic-bezier(0.25,0.46,0.45,0.94);
  font-size: 0.9rem;
}
.btn-primary {
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  box-shadow: 0 6px 20px rgba(255,107,107,0.35);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px rgba(255,107,107,0.45); }
.btn-outline {
  background: transparent; border: 2px solid var(--primary); color: var(--primary);
}
.btn-outline:hover { background: var(--primary); color: white; }

/* ===== 标签/标题 ===== */
.section-label {
  display: inline-block; font-size: 0.7rem; font-weight: 700; letter-spacing: 3px;
  margin-bottom: 12px; color: var(--primary); text-transform: uppercase;
}
.section-title {
  font-size: 2.2rem; margin-bottom: 14px; font-weight: 800;
  position: relative; display: inline-block;
}
.section-title::after {
  content: ''; position: absolute; bottom: -6px; left: 0; width: 48px; height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent-gold));
  border-radius: 4px;
}
.section-desc {
  max-width: 600px; color: var(--text-light); margin-bottom: 48px;
  font-size: 1.05rem; line-height: 1.7;
}

/* ===== 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: var(--white); border: 1px solid var(--border-light);
  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, var(--primary), var(--accent-gold));
  opacity: 0; transition: 0.3s;
}
.category-card:hover { transform: translateY(-6px); box-shadow: var(--card-shadow); }
.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: 18px; font-size: 1.4rem;
  background: linear-gradient(135deg, var(--bg-light), #FFE4D6);
  color: var(--primary);
}
.category-card h3 { font-size: 1.1rem; margin-bottom: 10px; }
.category-card p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 16px; }
.card-link {
  font-weight: 700; font-size: 0.85rem; text-decoration: none;
  color: var(--primary); display: inline-flex; align-items: center; gap: 4px;
}

/* ===== 特性块 ===== */
.feature-block {
  display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center;
}
.feature-image {
  border-radius: 20px; overflow: hidden; box-shadow: 0 12px 40px rgba(0,0,0,0.06);
}
.feature-image img { width: 100%; height: auto; display: block; }
.feature-text h2 { font-size: 2rem; margin-bottom: 16px; }
.feature-list { list-style: none; margin-top: 16px; }
.feature-list li {
  padding: 8px 0; display: flex; align-items: center; gap: 10px;
  font-size: 1rem; color: var(--text-dark);
}
.feature-list li::before {
  content: '✓'; font-weight: 800; color: var(--secondary);
  font-size: 1.2rem;
}

/* ===== 数据条 ===== */
.stats-bar {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; text-align: center;
}
.stat-item {
  padding: 32px 16px; border-radius: 16px; background: var(--white);
  border: 1px solid var(--border-light); transition: 0.3s;
}
.stat-item:hover { box-shadow: var(--card-shadow); transform: translateY(-3px); }
.stat-number {
  font-size: 2.6rem; font-weight: 900;
  background: linear-gradient(135deg, var(--primary), var(--accent-gold));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent;
  background-clip: text;
}
.stat-label { font-size: 0.9rem; color: var(--text-light); margin-top: 8px; font-weight: 500; }

/* ===== 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: var(--white);
  border: 1px solid var(--border-light); transition: 0.3s;
}
.content-wall-item:hover { transform: translateY(-5px); box-shadow: var(--card-shadow); }
.content-wall-item img { width: 100%; height: 200px; object-fit: cover; display: block; }
.content-wall-body { padding: 20px; }
.content-wall-body h3 { font-size: 1.1rem; margin-bottom: 6px; }
.content-wall-body p { color: var(--text-light); font-size: 0.9rem; margin-bottom: 12px; }
.content-wall-body .card-link { font-size: 0.8rem; }

/* ===== FAQ ===== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border: 1px solid var(--border-light); border-radius: 12px;
  margin-bottom: 10px; overflow: hidden; cursor: pointer;
  background: var(--white); transition: 0.2s;
}
.faq-item:hover { border-color: var(--primary); }
.faq-item .faq-question {
  padding: 18px 22px; font-weight: 700; font-size: 1rem;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-item .faq-question::after {
  content: '+'; font-size: 1.2rem; color: var(--primary); font-weight: 300;
  transition: 0.3s;
}
.faq-item.open .faq-question::after { content: '−'; }
.faq-item .faq-answer {
  padding: 0 22px 20px; display: none; color: var(--text-light);
  line-height: 1.7;
}
.faq-item.open .faq-answer { display: block; }
.faq-item.open { border-color: var(--primary); }

/* ===== CTA横幅 ===== */
.cta-banner {
  padding: 56px 24px; text-align: center; border-radius: 20px;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white; position: relative; overflow: hidden;
}
.cta-banner::before {
  content: ''; position: absolute; top: -50%; right: -30%;
  width: 60%; height: 200%; background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
}
.cta-banner h2 { color: white; font-size: 2rem; position: relative; z-index: 1; }
.cta-banner p { color: rgba(255,255,255,0.8); margin: 12px 0 28px; position: relative; z-index: 1; }
.cta-banner .btn-primary {
  background: white; color: var(--primary); box-shadow: 0 6px 20px rgba(0,0,0,0.1);
  position: relative; z-index: 1;
}
.cta-banner .btn-primary:hover { transform: translateY(-2px); }

/* ===== 页脚 ===== */
.site-footer {
  padding: 60px 0 28px; background: #FFF3ED;
  border-top: 1px solid var(--border-light);
}
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; }
.footer-brand { }
.footer-brand .logo { margin-bottom: 14px; }
.footer-brand p { color: var(--text-light); font-size: 0.9rem; max-width: 260px; }
.footer-col h4 { font-size: 0.9rem; font-weight: 700; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px; }
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 8px; }
.footer-col a { text-decoration: none; color: var(--text-light); font-size: 0.9rem; transition: 0.2s; }
.footer-col a:hover { color: var(--primary); }
.footer-bottom {
  border-top: 1px solid var(--border-light); margin-top: 40px;
  padding-top: 20px; text-align: center; font-size: 0.85rem; color: var(--text-light);
}

/* ===== 工具类 ===== */
.text-accent { color: var(--primary); }
.text-center { text-align: center; }
.seo-description { max-width: 600px; margin: 0 auto 48px; color: var(--text-light); line-height: 1.7; }
.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }

/* ===== 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(255,252,247,0.98); padding: 24px; gap: 16px; border-bottom: 1px solid var(--border-light); }
  .hero h1 { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
  .cta-banner h2 { font-size: 1.5rem; }
}
@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; }
  .section-title { font-size: 1.4rem; }
  .btn { width: 100%; justify-content: center; }
}