/*
Theme Name: 华菱制冷
Theme URI: https://www.0358zl.com/
Description: 山西华菱制冷科技有限公司官方展示主题 —— 以产品/工程案例为主，后台(外观→自定义、产品案例、项目分类、菜单)全可改，无需改代码。展示型，无留言功能。
Version: 1.0.0
Author: WorkBuddy
Requires at least: 5.8
Tested up to: 6.6
License: MIT
Text Domain: hualing
*/

:root{
    --c-primary:#0c4a8e;
    --c-accent:#17b3c4;
    --c-primary-d:#0a3a70;
    --c-dark:#1f2937;
    --c-muted:#6b7280;
    --c-line:#e5e7eb;
    --c-bg:#f6f8fb;
    --c-tint:#eef4fb;
    --maxw:1200px;
    --radius:14px;
    --shadow:0 8px 30px rgba(12,74,142,.08);
    --shadow-h:0 12px 36px rgba(12,74,142,.18);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
    color:var(--c-dark);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased;
}
a{color:var(--c-primary);text-decoration:none;transition:.2s}
a:hover{color:var(--c-accent)}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4{line-height:1.25;color:var(--c-dark);margin:0 0 .5em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 20px}
.narrow{max-width:820px}
.section{padding:64px 0}
.section-soft{background:var(--c-bg)}
.center-more{text-align:center;margin-top:32px}

/* ---------- 头部 ---------- */
.site-header{
    position:sticky;top:0;z-index:100;background:rgba(255,255,255,.94);
    backdrop-filter:saturate(160%) blur(10px);border-bottom:1px solid var(--c-line);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px;gap:16px}
.brand{display:flex;align-items:center;gap:10px;flex:none}
.brand .custom-logo{height:46px;width:auto}
.brand-text{font-size:20px;font-weight:800;letter-spacing:1px;color:var(--c-primary)}
.main-menu .menu-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.main-menu .menu-list li{position:relative}
.main-menu .menu-list a{
    display:block;padding:10px 16px;font-size:15px;color:#374151;font-weight:500;border-radius:8px;
}
.main-menu .menu-list a:hover,
.main-menu .menu-list .current-menu-item>a{color:var(--c-primary);background:var(--c-tint)}
.nav-phone{
    display:flex;align-items:center;gap:6px;flex:none;background:var(--c-primary);color:#fff;
    padding:9px 16px;border-radius:30px;font-weight:600;font-size:15px;
}
.nav-phone:hover{background:var(--c-primary-d);color:#fff}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2px;background:var(--c-dark);border-radius:2px;transition:.3s}
.menu-backdrop{display:none;position:fixed;inset:0;background:rgba(0,0,0,.4);z-index:90}

/* ---------- 按钮 ---------- */
.btn{display:inline-block;padding:12px 26px;border-radius:30px;font-weight:600;font-size:15px;cursor:pointer;border:2px solid transparent}
.btn-primary{background:var(--c-primary);color:#fff}
.btn-primary:hover{background:var(--c-primary-d);color:#fff}
.btn-ghost{background:transparent;border-color:var(--c-primary);color:var(--c-primary)}
.btn-ghost:hover{background:var(--c-primary);color:#fff}

/* ---------- 横幅 ---------- */
.hero{
    position:relative;background:linear-gradient(120deg,var(--c-primary-d),var(--c-primary));
    color:#fff;padding:110px 0;text-align:center;background-size:cover;background-position:center;
}
.hero-inner{max-width:880px}
.hero-title{font-size:clamp(28px,5vw,48px);font-weight:800;margin-bottom:16px;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.hero-sub{font-size:clamp(15px,2.4vw,19px);opacity:.95;margin-bottom:28px}

/* ---------- 区块标题 ---------- */
.section-head{text-align:center;max-width:760px;margin:0 auto 40px}
.eyebrow{display:inline-block;font-size:13px;letter-spacing:3px;color:var(--c-accent);font-weight:700;margin-bottom:10px}
.section-head h2{font-size:clamp(24px,3.6vw,34px)}
.section-head p{color:var(--c-muted);margin:8px 0 0}

/* ---------- 项目分类网格 ---------- */
.cat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cat-card{
    background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;
    box-shadow:var(--shadow);transition:.25s;display:block;color:inherit;
}
.cat-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-h);border-color:var(--c-accent)}
.cat-thumb{height:160px;background-size:cover;background-position:center;background-color:var(--c-tint)}
.cat-thumb--empty{display:flex;align-items:center;justify-content:center;font-size:46px;background:linear-gradient(135deg,var(--c-primary),var(--c-accent));color:rgba(255,255,255,.9)}
.cat-body{padding:18px 20px;display:flex;align-items:center;justify-content:space-between}
.cat-body h3{margin:0;font-size:19px}
.cat-count{font-size:13px;color:var(--c-muted);background:var(--c-tint);padding:3px 10px;border-radius:20px}

/* ---------- 案例网格 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.case-card{background:#fff;border:1px solid var(--c-line);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:.25s}
.case-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-h)}
.case-card a{color:inherit;display:block}
.case-card img,.case-card .case-thumb-empty{width:100%;height:200px;object-fit:cover}
.case-thumb-empty{display:flex;align-items:center;justify-content:center;font-size:22px;font-weight:700;color:#fff;background:linear-gradient(135deg,var(--c-primary),var(--c-accent))}
.case-body{padding:16px 18px}
.case-body .tag{display:inline-block;font-size:12px;color:var(--c-accent);background:var(--c-tint);padding:2px 10px;border-radius:20px;margin-bottom:8px}
.case-body h3{font-size:17px;margin:0 0 6px}
.case-body p{font-size:14px;color:var(--c-muted);margin:0}
.empty-tip{color:var(--c-muted);grid-column:1/-1;text-align:center;padding:30px}

/* ---------- 关于 + 联系两栏 ---------- */
.two-col{display:grid;grid-template-columns:1.3fr 1fr;gap:36px;align-items:start}
.about-snippet h2{font-size:clamp(22px,3vw,30px)}
.about-snippet p{color:var(--c-muted);margin:14px 0 22px}
.contact-card{background:var(--c-tint);border-radius:var(--radius);padding:26px}
.contact-card h3{margin-top:0}
.contact-card ul{list-style:none;padding:0;margin:0 0 18px}
.contact-card li{margin-bottom:8px;font-size:15px}

/* ---------- 页面头 ---------- */
.page-hero{background:linear-gradient(120deg,var(--c-primary-d),var(--c-primary));color:#fff;padding:54px 0}
.page-hero h1{font-size:clamp(26px,4vw,38px);margin:0}
.crumbs{margin-top:10px;font-size:14px;opacity:.9}
.crumbs a{color:#fff;text-decoration:underline}

/* ---------- 分类筛选 ---------- */
.cat-filter{display:flex;flex-wrap:wrap;gap:10px;margin:28px auto -10px}
.chip{display:inline-block;padding:8px 18px;border:1px solid var(--c-line);border-radius:30px;font-size:14px;color:var(--c-muted);background:#fff}
.chip:hover{border-color:var(--c-accent);color:var(--c-primary)}
.chip.active{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* ---------- 案例详情 ---------- */
.product-detail{display:grid;grid-template-columns:1fr 1fr;gap:36px;align-items:start}
.pd-media img,.pd-empty{border-radius:var(--radius);box-shadow:var(--shadow);width:100%}
.pd-empty{height:360px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:22px;font-weight:700;background:linear-gradient(135deg,var(--c-primary),var(--c-accent))}
.pd-info .tag{display:inline-block;font-size:12px;color:var(--c-accent);background:var(--c-tint);padding:3px 12px;border-radius:20px}
.pd-info h2{font-size:26px;margin:10px 0 16px}
.pd-content{color:#374151;font-size:15.5px}
.pd-contact{margin-top:24px;padding:20px;background:var(--c-tint);border-radius:var(--radius)}
.pd-contact h4{margin:0 0 10px}
.pd-contact p{margin:4px 0;font-size:15px}
.pd-contact .btn{margin-top:12px}
.back-row{margin-top:30px}

/* ---------- 联系页 ---------- */
.contact-layout{display:grid;grid-template-columns:1.3fr 1fr;gap:36px}
.contact-list{list-style:none;padding:0;margin:0}
.contact-list li{display:flex;gap:14px;padding:14px 0;border-bottom:1px dashed var(--c-line)}
.contact-list .ic{font-size:22px;flex:none}
.contact-list b{display:block;color:var(--c-primary);margin-bottom:2px}
.contact-list p{margin:0}
.qr-box{background:var(--c-tint);border-radius:var(--radius);padding:22px;text-align:center}
.qr-box img{max-width:220px;margin:0 auto 10px;border-radius:10px;background:#fff}
.qr-ph{padding:30px;color:var(--c-muted);font-size:14px}

/* ---------- 页脚 ---------- */
.site-footer{background:#0a2540;color:rgba(255,255,255,.78);padding:54px 0 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:34px}
.f-logo{font-size:22px;font-weight:800;color:#fff;margin-bottom:14px}
.f-intro{font-size:13.5px;color:rgba(255,255,255,.65);margin:0 0 10px}
.f-slogan{font-size:13px;color:var(--c-accent);margin:0}
.f-col h4{color:#fff;font-size:15px;margin:0 0 16px;position:relative;padding-left:12px}
.f-col h4::before{content:"";position:absolute;left:0;top:3px;bottom:3px;width:3px;border-radius:3px;background:var(--c-accent)}
.f-contact{list-style:none;padding:0;margin:0;font-size:14px}
.f-contact li{margin-bottom:9px}
.f-contact .lbl{color:var(--c-accent)}
.f-menu{list-style:none;padding:0;margin:0;font-size:14px}
.f-menu li{margin-bottom:9px}
.f-menu a{color:rgba(255,255,255,.78)}
.f-menu a:hover{color:#fff}
.f-qr .qr-img{width:130px;background:#fff;padding:6px;border-radius:8px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);margin-top:40px;padding:18px 0;font-size:13px;color:rgba(255,255,255,.55)}
.footer-bottom .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* ---------- 分页 ---------- */
.pagination,.nav-links{text-align:center;margin-top:30px}
.pagination a,.nav-links a,.pagination span,.nav-links span{display:inline-block;padding:8px 14px;margin:0 3px;border:1px solid var(--c-line);border-radius:8px;color:var(--c-primary)}
.pagination .current,.nav-links .current{background:var(--c-primary);color:#fff;border-color:var(--c-primary)}

/* ---------- 响应式 ---------- */
@media (max-width:980px){
    .cat-grid,.case-grid{grid-template-columns:repeat(2,1fr)}
    .two-col,.product-detail,.contact-layout{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
    .nav-toggle{display:flex}
    .nav-phone{display:none}
    .main-menu{
        position:fixed;top:72px;left:0;right:0;bottom:0;background:#fff;z-index:95;
        transform:translateX(100%);transition:.3s;overflow-y:auto;padding:16px;
    }
    .main-menu.open{transform:translateX(0)}
    .main-menu .menu-list{flex-direction:column;align-items:stretch;gap:2px}
    .main-menu .menu-list a{padding:14px 16px;font-size:16px;border-bottom:1px solid var(--c-line)}
    .menu-backdrop.show{display:block}
    .cat-grid,.case-grid{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .section{padding:44px 0}
    .hero{padding:80px 0}
}