/* ========== 全局重置 ========== */
* { margin:0; padding:0; box-sizing:border-box; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
    background: #f7f9fc;
    color: #1a1a1a;
    line-height: 1.5;
    padding-top: 90px;
}
a { text-decoration:none; }

/* ---------- 固定头部 ---------- */
.site-header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    color: #fff;
    /* 背景由 header.php 内联控制 */
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.logo-text {
    font-size: 1.6rem;
    font-weight: 700;
    color: #fff;
    display: flex;
    align-items: center;
}
.logo-text span {
    font-size: 0.7rem;
    opacity: 0.85;
    font-weight: 400;
    margin-left: 6px;
}
.header-phone {
    background: rgba(255,255,255,0.15);
    padding: 8px 18px;
    border-radius: 30px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}
.header-phone a { color: #fff; }

/* ---------- 导航栏 ---------- */
.main-nav {
    background: rgba(0,0,0,0.1);
    border-top: 1px solid rgba(255,255,255,0.1);
}
.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}
.nav-list {
    list-style: none;
    display: flex;
    gap: 5px;
    overflow-x: auto;
    flex-wrap: nowrap;
}
.nav-list li a {
    display: block;
    padding: 14px 22px;
    color: rgba(255,255,255,0.9);
    font-weight: 500;
    border-radius: 8px 8px 0 0;
    transition: 0.2s;
    white-space: nowrap;
}
.nav-list li a:hover { background: rgba(255,255,255,0.15); color: #fff; }
.nav-list li a.active { background: rgba(255,255,255,0.2); font-weight: 600; }

/* ---------- 内容区 ---------- */
.site-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 60px 20px 120px;
}

/* ---------- 卡片 ---------- */
.card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    padding: 30px;
    margin-bottom: 30px;
}

/* ---------- 产品/案例网格 ---------- */
.product-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}
.product-item {
    background: #fff;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    transition: 0.2s;
}
.product-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
}
/* 图片统一高度 + 裁剪，避免过大 */
.product-item img {
    width: 100%;
    height: 220px;          /* 电脑端固定高度 */
    object-fit: cover;
    display: block;
}
.product-item h3 {
    padding: 18px 18px 8px;
    font-size: 1.1rem;
}
.product-item p {
    padding: 0 18px 18px;
    color: #666;
    font-size: 0.9rem;
}

/* ---------- 新闻网格 ---------- */
.article-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin-bottom: 40px;
}
.article-item {
    background: #fff;
    padding: 25px;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.06);
    display: flex;
    flex-direction: column;
    transition: 0.2s;
}
.article-item:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.12);
    transform: translateY(-3px);
}
.article-item h3 a {
    color: #1a1a1a;
    font-size: 1.1rem;
}
.article-item .article-meta {
    margin-top: auto;
    padding-top: 15px;
    color: #888;
    font-size: 0.85rem;
}

/* ---------- 按钮 ---------- */
.btn-primary {
    display: inline-block;
    background: #fff;
    color: var(--theme-color);
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: 0.2s;
}
.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
}

/* ---------- 底部 ---------- */
.site-footer {
    color: #fff;
    text-align: center;
    padding: 40px 20px;
    margin-top: 60px;
}
.friend-links a { color: rgba(255,255,255,0.7); margin: 0 8px; }
.footer-contact a { color: #ffd700; }

/* ---------- 固定拨号按钮 ---------- */
.fixed-dial-btn {
    display: none;
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: linear-gradient(135deg, var(--theme-color), var(--theme-dark));
    color: #fff;
    padding: 14px 24px;
    border-radius: 50px;
    font-weight: 700;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    z-index: 1000;
    transition: 0.2s;
}
.fixed-dial-btn:hover { transform: scale(1.05); }

/* ---------- 分页 ---------- */
.pagination { text-align: center; margin: 30px 0; }
.pagination a {
    display: inline-block;
    padding: 10px 20px;
    background: var(--theme-color);
    color: #fff;
    border-radius: 30px;
    margin: 0 5px;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    body { padding-top: 75px; }
    .site-content { padding: 20px 15px 110px; }

    .header-inner { padding: 10px 15px; }
    .logo-text { font-size: 1.2rem; }
    .header-phone { font-size: 0.8rem; padding: 6px 14px; }
    .nav-list li a { padding: 10px 14px; font-size: 0.8rem; }

    .product-grid { gap: 15px; }
    .article-grid { grid-template-columns: 1fr; gap: 15px; }

    /* 手机端图片高度适当缩小 */
    .product-item img { height: 160px; }
    .product-item h3 { font-size: 0.95rem; padding: 12px 12px 4px; }
    .product-item p { font-size: 0.8rem; padding: 0 12px 12px; }

    .article-item { padding: 18px; }

    .fixed-dial-btn { display: flex; align-items: center; gap: 6px; }
}

@media (min-width: 769px) {
    .fixed-dial-btn { display: none; }
}