/* ========== 全局变量与基础 ========== */
:root {
    --primary: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #E8F5E9;
    --accent: #D4A853;
    --bg: #FBFBF9;
    --white: #FFFFFF;
    --gray-100: #F5F5F5;
    --gray-200: #E9E9E9;
    --gray-600: #666666;
    --gray-900: #1A1A1A;
    --shadow-sm: 0 4px 6px rgba(0,0,0,0.02);
    --shadow: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-md: 0 20px 25px -5px rgba(0,0,0,0.05);
    --shadow-lg: 0 25px 50px -12px rgba(0,0,0,0.08);
    --radius: 24px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background: var(--bg);
    color: var(--gray-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, .serif { font-family: 'Noto Serif SC', 'STSong', 'SimSun', serif; font-weight: 700; }

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

.container { max-width: 1280px; margin: 0 auto; padding: 0 32px; }

/* ========== 导航栏 ========== */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,0,0,0.04);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    position: relative;
}

.logo {
    font-size: 26px;
    font-weight: 700;
    color: var(--primary-dark);
    letter-spacing: 2px;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ========== 中间电话按钮（深绿白字，显眼） ========== */
.header-phone {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
}

.header-phone a {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 24px;
    background: var(--primary);
    color: #fff;
    font-weight: 700;
    font-size: 17px;
    border-radius: 40px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(46,125,50,0.3);
    border: 2px solid var(--primary);
}

.header-phone a:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    box-shadow: 0 6px 16px rgba(46,125,50,0.4);
    transform: translateY(-1px);
}

.phone-icon { font-size: 20px; line-height: 1; }

.phone-placeholder {
    background: #ccc !important;
    color: #666 !important;
    pointer-events: none;
    box-shadow: none !important;
    border-color: #ccc !important;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 32px;
    font-weight: 500;
}

.nav-menu a { color: var(--gray-600); transition: color 0.3s; }
.nav-menu a:hover, .nav-menu .active { color: var(--primary); }

/* ========== Hero 横幅 ========== */
.hero {
    background: radial-gradient(circle at 80% 20%, #e8f3ef 0%, #f5f9f7 50%, #fbfbf9 100%);
    padding: 80px 0;
}

.hero-inner { display: flex; align-items: center; gap: 60px; }
.hero-text { flex: 1; }
.hero-text h1 { font-size: 48px; line-height: 1.2; color: #1B3B1B; margin-bottom: 16px; }
.hero-text p { font-size: 18px; color: var(--gray-600); margin-bottom: 30px; }

.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary { background: var(--primary); color: white; box-shadow: 0 10px 20px rgba(46,125,50,0.2); }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }
.btn-outline { border: 2px solid var(--primary); color: var(--primary); background: transparent; }
.btn-outline:hover { background: var(--primary-light); }

.hero-visual { flex: 1; display: flex; justify-content: center; }
.product-placeholder {
    width: 400px;
    height: 300px;
    background: rgba(255,255,255,0.6);
    backdrop-filter: blur(10px);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}

/* ========== 通用区块 ========== */
.section { padding: 80px 0; }
.section-title { text-align: center; font-size: 36px; margin-bottom: 50px; color: #1B3B1B; }

.product-grid, .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: 0.3s;
    border: 1px solid var(--gray-200);
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-lg); border-color: transparent; }
.card-icon { font-size: 48px; margin-bottom: 15px; }
.card h3 { margin-bottom: 10px; font-size: 20px; }

/* ========== 关于我们 ========== */
.about-grid { display: flex; gap: 80px; align-items: center; }
.about-image { flex: 1; position: relative; }
.about-image .img-box {
    width: 100%;
    aspect-ratio: 4/3;
    background: #d9e8e0;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 80px;
    color: var(--primary);
    box-shadow: var(--shadow-lg);
}
.about-image .experience-badge {
    position: absolute;
    bottom: -20px;
    right: -20px;
    background: var(--primary);
    color: white;
    padding: 20px 28px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 18px;
    box-shadow: var(--shadow-md);
}
.about-text { flex: 1; }
.about-text h2 { font-size: 36px; margin-bottom: 20px; }
.about-text p { color: var(--gray-600); margin-bottom: 16px; font-size: 16px; line-height: 1.8; }

/* ========== 文章列表与详情 ========== */
.list-wrapper, .single-wrapper {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 40px;
    margin-top: 40px;
}
.list-content, .single-content { min-width: 0; }

.post-multi {
    background: var(--white);
    border-radius: 16px;
    padding: 30px;
    margin-bottom: 24px;
    box-shadow: var(--shadow);
    transition: 0.3s;
}
.post-multi:hover { transform: translateY(-3px); }
.post-title { font-size: 22px; margin-bottom: 12px; }
.post-title a { color: var(--gray-900); }
.post-title a:hover { color: var(--primary); }
.post-meta { font-size: 13px; color: #999; margin-bottom: 16px; }
.post-meta span { margin-right: 16px; }
.post-intro { color: var(--gray-600); line-height: 1.8; margin-bottom: 12px; }
.read-more { color: var(--primary); font-weight: 600; }

.post-single {
    background: var(--white);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
}
.post-single .post-title { font-size: 32px; margin-bottom: 16px; }
.post-content { font-size: 16px; line-height: 1.9; }
.post-tags { margin-top: 30px; padding-top: 20px; border-top: 1px solid #eee; }
.post-tags a {
    display: inline-block;
    background: var(--primary-light);
    color: var(--primary);
    padding: 4px 14px;
    border-radius: 20px;
    margin-right: 8px;
    font-size: 13px;
}
.post-nav { display: flex; justify-content: space-between; margin-top: 30px; font-size: 14px; }

/* 分页 */
.pagebar { text-align: center; margin: 30px 0; }
.pagebar-btn {
    display: inline-block;
    padding: 8px 16px;
    margin: 0 4px;
    border-radius: 8px;
    background: var(--primary-light);
    color: var(--primary);
}
.pagebar-btn.current { background: var(--primary); color: white; }

/* 侧边栏 */
.sidebar-widget {
    background: var(--white);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
}
.sidebar-widget h3 {
    font-size: 18px;
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
}
.sidebar-widget ul { list-style: none; }
.sidebar-widget ul li { margin-bottom: 10px; }
.sidebar-widget ul li a { color: var(--gray-600); }
.sidebar-widget ul li a:hover { color: var(--primary); }

/* 首页新闻网格 */
.news-grid .card { text-align: left; }
.news-grid .card h3 { font-size: 18px; margin-bottom: 8px; }

/* ========== 页脚 ========== */
.footer {
    background: #1B3B1B;
    color: #B0C7BE;
    padding: 50px 0 30px;
    margin-top: 80px;
}
.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-bottom: 30px;
}
.footer h4 { color: white; margin-bottom: 12px; }
.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 20px;
    font-size: 14px;
    opacity: 0.8;
}

/* ========== 新闻三栏网格列表 ========== */
.news-list-wrapper {
    width: 100%;
    margin-top: 40px;
}
.news-list-full { width: 100%; }
.news-grid {
    display: grid !important;
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 24px !important;
    margin-top: 20px !important;
    width: 100% !important;
}
.news-card {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: all 0.3s ease;
    overflow: hidden;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary);
}
.news-card-link {
    display: block;
    padding: 24px 20px;
    text-decoration: none;
    color: inherit;
    height: 100%;
}
.news-card-date {
    display: block;
    font-size: 12px;
    color: #999;
    margin-bottom: 10px;
    letter-spacing: 0.5px;
}
.news-card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-900);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    transition: color 0.3s;
}
.news-card:hover .news-card-title { color: var(--primary); }
.no-article { text-align: center; padding: 80px; color: #999; font-size: 16px; }

/* ========== 响应式设计 ========== */
@media (max-width: 1024px) {
    .about-grid { flex-direction: column; }
    .about-image .experience-badge {
        right: 10px;
        bottom: -10px;
        font-size: 16px;
        padding: 12px 20px;
    }
    .news-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 16px !important;
    }
}

@media (max-width: 768px) {
    .container { padding: 0 20px; }
    .header-phone { display: none; }
    .nav-menu { display: none; }
    .hero-inner { flex-direction: column; text-align: center; }
    .hero-text h1 { font-size: 36px; }
    .hero-visual .product-placeholder { width: 100%; height: 200px; }
    .list-wrapper, .single-wrapper { grid-template-columns: 1fr; }
    .post-single .post-title { font-size: 24px; }
    .post-nav { flex-direction: column; gap: 10px; }
    .news-grid {
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 16px !important;
    }
    .news-card-link { padding: 16px; }
    .news-card-title { font-size: 14px; }
}

@media (max-width: 480px) {
    .news-grid {
        grid-template-columns: 1fr !important;
    }
}