/* 基础重置 */
*, *::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: #fff8f0; 
    color: #3d2c1e; 
}

/* 核心布局 — 必须居中 */
.container { 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 24px; 
}
.section { 
    padding: 80px 0; 
}
.section:nth-child(even) { 
    background: #fef6ed; 
}

/* 导航 — 固定顶部 */
.site-header { 
    position: fixed; 
    top: 0; 
    left: 0; 
    width: 100%; 
    z-index: 1000; 
    background: rgba(255, 248, 240, 0.92); 
    backdrop-filter: blur(12px); 
    border-bottom: 1px solid #e8d5c0; 
}
.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: 1.3rem; 
    text-decoration: none; 
    color: #2a6b7c; 
    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, #f7b731, #f5a623); 
    color: #fff; 
    box-shadow: 0 4px 12px rgba(247, 183, 49, 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: 0.2s; 
    position: relative; 
}
.main-nav a::after { 
    content: ''; 
    position: absolute; 
    bottom: -4px; 
    left: 0; 
    width: 0; 
    height: 2px; 
    background: #f7b731; 
    transition: 0.3s; 
}
.main-nav a:hover { 
    color: #2a6b7c; 
}
.main-nav a:hover::after { 
    width: 100%; 
}
.nav-cta { 
    padding: 10px 24px; 
    border-radius: 30px; 
    color: #fff !important; 
    font-weight: 700; 
    background: linear-gradient(135deg, #2a6b7c, #3b8a9e); 
    box-shadow: 0 4px 14px rgba(42, 107, 124, 0.25); 
    transition: 0.3s; 
}
.nav-cta:hover { 
    transform: translateY(-2px); 
    box-shadow: 0 6px 20px rgba(42, 107, 124, 0.35); 
}
.nav-cta::after { 
    display: none; 
}
.menu-toggle { 
    display: none; 
    background: none; 
    border: none; 
    font-size: 1.5rem; 
    color: #2a6b7c; 
    cursor: pointer; 
}

/* 首页Hero */
.hero { 
    min-height: 75vh; 
    display: flex; 
    align-items: center; 
    position: relative; 
    background: linear-gradient(170deg, #fff8f0 0%, #fef0e0 40%, #e8f4f0 100%); 
    overflow: hidden; 
}
.hero::before { 
    content: ''; 
    position: absolute; 
    top: -30%; 
    right: -10%; 
    width: 600px; 
    height: 600px; 
    background: radial-gradient(circle, rgba(247, 183, 49, 0.12) 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: 30px; 
    margin-bottom: 16px; 
    background: #e8f4f0; 
    color: #2a6b7c; 
    letter-spacing: 2px; 
    text-transform: uppercase; 
}
.hero h1 { 
    font-size: 3rem; 
    line-height: 1.15; 
    margin-bottom: 20px; 
    color: #1a3b44; 
    font-weight: 900; 
    letter-spacing: -0.5px; 
}
.hero h1 span { 
    background: linear-gradient(135deg, #f7b731, #e8922a); 
    -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: 32px; 
    line-height: 1.7; 
    color: #5a4a3a; 
}
.hero-buttons { 
    display: flex; 
    gap: 14px; 
}
.hero-image { 
    border-radius: 20px; 
    overflow: hidden; 
    box-shadow: 0 20px 60px rgba(42, 107, 124, 0.12); 
    border: 2px solid rgba(247, 183, 49, 0.2); 
}
.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: 30px; 
    font-weight: 700; 
    cursor: pointer; 
    border: none; 
    text-decoration: none; 
    transition: 0.3s; 
    font-size: 0.95rem; 
}
.btn-primary { 
    color: #fff; 
    background: linear-gradient(135deg, #f7b731, #e8922a); 
    box-shadow: 0 6px 20px rgba(247, 183, 49, 0.3); 
}
.btn-primary:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 10px 30px rgba(247, 183, 49, 0.4); 
}
.btn-outline { 
    background: transparent; 
    border: 2px solid #2a6b7c; 
    color: #2a6b7c; 
}
.btn-outline:hover { 
    background: #2a6b7c; 
    color: #fff; 
    transform: translateY(-3px); 
}

/* 标签/标题 */
.section-label { 
    display: inline-block; 
    font-size: 0.75rem; 
    font-weight: 700; 
    letter-spacing: 3px; 
    margin-bottom: 12px; 
    color: #f7b731; 
    text-transform: uppercase; 
    border-left: 3px solid #f7b731; 
    padding-left: 12px; 
}
.section-title { 
    font-size: 2.2rem; 
    margin-bottom: 14px; 
    color: #1a3b44; 
    font-weight: 800; 
    line-height: 1.2; 
}
.section-desc { 
    max-width: 600px; 
    opacity: 0.7; 
    margin-bottom: 40px; 
    color: #5a4a3a; 
    line-height: 1.7; 
}

/* 卡片网格 */
.cards-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); 
    gap: 28px; 
}
.category-card { 
    border-radius: 16px; 
    padding: 32px; 
    border: 1px solid #e8d5c0; 
    background: #fff; 
    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, #f7b731, #2a6b7c); 
    opacity: 0; 
    transition: 0.3s; 
}
.category-card:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 12px 40px rgba(42, 107, 124, 0.1); 
    border-color: #f7b731; 
}
.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, #e8f4f0, #fef0e0); 
    color: #2a6b7c; 
}
.card-link { 
    font-weight: 700; 
    font-size: 0.85rem; 
    text-decoration: none; 
    color: #f7b731; 
    display: inline-flex; 
    align-items: center; 
    gap: 4px; 
    transition: 0.2s; 
}
.card-link:hover { 
    gap: 8px; 
    color: #e8922a; 
}

/* 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 16px 48px rgba(42, 107, 124, 0.1); 
    border: 2px solid rgba(247, 183, 49, 0.15); 
}
.feature-image img { 
    width: 100%; 
    height: auto; 
    display: block; 
}
.feature-text { 
}
.feature-list { 
    list-style: none; 
}
.feature-list li { 
    padding: 8px 0; 
    display: flex; 
    align-items: center; 
    gap: 10px; 
    font-size: 1.05rem; 
    color: #3d2c1e; 
}
.feature-list li::before { 
    content: '✦'; 
    font-weight: 700; 
    color: #f7b731; 
    font-size: 1.1rem; 
}

/* 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: 16px; 
    border: 1px solid #e8d5c0; 
    background: #fff; 
    transition: 0.3s; 
}
.stat-item:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 8px 24px rgba(247, 183, 49, 0.1); 
    border-color: #f7b731; 
}
.stat-number { 
    font-size: 2.4rem; 
    font-weight: 900; 
    color: #2a6b7c; 
    line-height: 1; 
}
.stat-number span { 
    color: #f7b731; 
}
.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(280px, 1fr)); 
    gap: 28px; 
}
.content-wall-item { 
    border-radius: 16px; 
    overflow: hidden; 
    border: 1px solid #e8d5c0; 
    background: #fff; 
    transition: 0.3s; 
}
.content-wall-item:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 12px 40px rgba(42, 107, 124, 0.1); 
    border-color: #f7b731; 
}
.content-wall-item img { 
    width: 100%; 
    height: 200px; 
    object-fit: cover; 
    transition: 0.3s; 
}
.content-wall-item:hover img { 
    transform: scale(1.03); 
}
.content-wall-body { 
    padding: 20px 24px 24px; 
}

/* FAQ */
.faq-list { 
    max-width: 800px; 
    margin: 0 auto; 
}
.faq-item { 
    border: 1px solid #e8d5c0; 
    border-radius: 12px; 
    margin-bottom: 10px; 
    overflow: hidden; 
    cursor: pointer; 
    background: #fff; 
    transition: 0.2s; 
}
.faq-item:hover { 
    border-color: #f7b731; 
}
.faq-item .faq-question { 
    padding: 18px 22px; 
    font-weight: 700; 
    display: flex; 
    justify-content: space-between; 
    align-items: center; 
    color: #1a3b44; 
    font-size: 1rem; 
}
.faq-item .faq-question::after { 
    content: '+'; 
    font-size: 1.3rem; 
    color: #f7b731; 
    transition: 0.3s; 
}
.faq-item.open .faq-question::after { 
    content: '−'; 
    transform: rotate(180deg); 
}
.faq-item .faq-answer { 
    padding: 0 22px 18px; 
    display: none; 
    opacity: 0.75; 
    line-height: 1.7; 
    color: #5a4a3a; 
}
.faq-item.open .faq-answer { 
    display: block; 
}

/* CTA横幅 */
.cta-banner { 
    padding: 64px 24px; 
    text-align: center; 
    border-radius: 20px; 
    background: linear-gradient(135deg, #2a6b7c, #1a3b44); 
    color: #fff; 
    position: relative; 
    overflow: hidden; 
}
.cta-banner::before { 
    content: ''; 
    position: absolute; 
    top: -50%; 
    right: -20%; 
    width: 400px; 
    height: 400px; 
    background: radial-gradient(circle, rgba(247, 183, 49, 0.15) 0%, transparent 70%); 
    border-radius: 50%; 
}
.cta-banner h2 { 
    color: #fff; 
    font-size: 2rem; 
    position: relative; 
    z-index: 1; 
}
.cta-banner .btn-primary { 
    background: #fff; 
    color: #2a6b7c; 
    box-shadow: 0 6px 20px rgba(0,0,0,0.1); 
    position: relative; 
    z-index: 1; 
}
.cta-banner .btn-primary:hover { 
    transform: translateY(-3px); 
    box-shadow: 0 10px 30px rgba(0,0,0,0.15); 
}

/* 页脚 */
.site-footer { 
    padding: 56px 0 28px; 
    background: #1a3b44; 
    color: rgba(255,255,255,0.8); 
}
.site-footer .container { 
}
.footer-grid { 
    display: grid; 
    grid-template-columns: 2fr 1fr 1fr 1fr; 
    gap: 40px; 
}
.footer-brand { 
}
.footer-brand .logo { 
    color: #fff; 
}
.footer-col { 
}
.footer-col h4 { 
    color: #f7b731; 
    margin-bottom: 16px; 
    font-size: 0.95rem; 
    letter-spacing: 1px; 
}
.footer-col a { 
    display: block; 
    color: rgba(255,255,255,0.7); 
    text-decoration: none; 
    padding: 4px 0; 
    font-size: 0.9rem; 
    transition: 0.2s; 
}
.footer-col a:hover { 
    color: #f7b731; 
    padding-left: 4px; 
}
.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; 
    color: rgba(255,255,255,0.5); 
}

/* 工具类 */
.text-accent { 
    color: #f7b731; 
}
.text-center { 
    text-align: center; 
}
.seo-description { 
    max-width: 600px; 
    margin: 0 auto 48px; 
    opacity: 0.7; 
    line-height: 1.7; 
}
.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; 
    }
    .main-nav.open { 
        display: flex; 
        flex-direction: column; 
        position: absolute; 
        top: 68px; 
        left: 0; 
        width: 100%; 
        background: rgba(255, 248, 240, 0.98); 
        padding: 24px; 
        gap: 16px; 
        border-bottom: 2px solid #f7b731; 
    }
    .hero h1 { 
        font-size: 2.2rem; 
    }
}
@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; 
        gap: 12px; 
    }
    .hero h1 { 
        font-size: 1.8rem; 
    }
    .section-title { 
        font-size: 1.6rem; 
    }
    .stat-number { 
        font-size: 1.8rem; 
    }
}